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authorSam Ravnborg <sam@ravnborg.org>2008-12-03 06:11:52 -0500
committerDavid S. Miller <davem@davemloft.net>2008-12-04 12:17:21 -0500
commita88b5ba8bd8ac18aad65ee6c6a254e2e74876db3 (patch)
treeeb3d0ffaf53c3f7ec6083752c2097cecd1cb892a /arch/sparc
parentd670bd4f803c8b646acd20f3ba21e65458293faf (diff)
sparc,sparc64: unify kernel/
o Move all files from sparc64/kernel/ to sparc/kernel - rename as appropriate o Update sparc/Makefile to the changes o Update sparc/kernel/Makefile to include the sparc64 files NOTE: This commit changes link order on sparc64! Link order had to change for either of sparc32 and sparc64. And assuming sparc64 see more testing than sparc32 change link order on sparc64 where issues will be caught faster. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/Makefile9
-rw-r--r--arch/sparc/kernel/Makefile39
-rw-r--r--arch/sparc/kernel/audit.c83
-rw-r--r--arch/sparc/kernel/auxio_64.c149
-rw-r--r--arch/sparc/kernel/central.c268
-rw-r--r--arch/sparc/kernel/cherrs.S579
-rw-r--r--arch/sparc/kernel/chmc.c863
-rw-r--r--arch/sparc/kernel/compat_audit.c43
-rw-r--r--arch/sparc/kernel/cpu_64.c166
-rw-r--r--arch/sparc/kernel/ds.c1244
-rw-r--r--arch/sparc/kernel/dtlb_miss.S39
-rw-r--r--arch/sparc/kernel/dtlb_prot.S54
-rw-r--r--arch/sparc/kernel/ebus.c257
-rw-r--r--arch/sparc/kernel/entry.h195
-rw-r--r--arch/sparc/kernel/etrap_64.S236
-rw-r--r--arch/sparc/kernel/fpu_traps.S384
-rw-r--r--arch/sparc/kernel/ftrace.c76
-rw-r--r--arch/sparc/kernel/getsetcc.S24
-rw-r--r--arch/sparc/kernel/head_64.S900
-rw-r--r--arch/sparc/kernel/helpers.S63
-rw-r--r--arch/sparc/kernel/hvapi.c193
-rw-r--r--arch/sparc/kernel/hvcalls.S800
-rw-r--r--arch/sparc/kernel/hvtramp.S140
-rw-r--r--arch/sparc/kernel/idprom_64.c49
-rw-r--r--arch/sparc/kernel/init_task_64.c35
-rw-r--r--arch/sparc/kernel/iommu.c866
-rw-r--r--arch/sparc/kernel/iommu_common.h59
-rw-r--r--arch/sparc/kernel/irq_64.c1101
-rw-r--r--arch/sparc/kernel/itlb_miss.S39
-rw-r--r--arch/sparc/kernel/ivec.S51
-rw-r--r--arch/sparc/kernel/kgdb_64.c186
-rw-r--r--arch/sparc/kernel/kprobes.c593
-rw-r--r--arch/sparc/kernel/kstack.h60
-rw-r--r--arch/sparc/kernel/ktlb.S304
-rw-r--r--arch/sparc/kernel/ldc.c2378
-rw-r--r--arch/sparc/kernel/mdesc.c916
-rw-r--r--arch/sparc/kernel/misctrap.S97
-rw-r--r--arch/sparc/kernel/module_64.c213
-rw-r--r--arch/sparc/kernel/of_device_64.c898
-rw-r--r--arch/sparc/kernel/pci.c1095
-rw-r--r--arch/sparc/kernel/pci_common.c545
-rw-r--r--arch/sparc/kernel/pci_fire.c521
-rw-r--r--arch/sparc/kernel/pci_impl.h185
-rw-r--r--arch/sparc/kernel/pci_msi.c447
-rw-r--r--arch/sparc/kernel/pci_psycho.c618
-rw-r--r--arch/sparc/kernel/pci_sabre.c609
-rw-r--r--arch/sparc/kernel/pci_schizo.c1504
-rw-r--r--arch/sparc/kernel/pci_sun4v.c1033
-rw-r--r--arch/sparc/kernel/pci_sun4v.h92
-rw-r--r--arch/sparc/kernel/pci_sun4v_asm.S362
-rw-r--r--arch/sparc/kernel/power.c75
-rw-r--r--arch/sparc/kernel/process_64.c812
-rw-r--r--arch/sparc/kernel/prom_64.c1684
-rw-r--r--arch/sparc/kernel/psycho_common.c470
-rw-r--r--arch/sparc/kernel/psycho_common.h48
-rw-r--r--arch/sparc/kernel/ptrace_64.c1090
-rw-r--r--arch/sparc/kernel/reboot.c53
-rw-r--r--arch/sparc/kernel/rtrap_64.S450
-rw-r--r--arch/sparc/kernel/sbus.c674
-rw-r--r--arch/sparc/kernel/setup_64.c428
-rw-r--r--arch/sparc/kernel/signal32.c899
-rw-r--r--arch/sparc/kernel/signal_64.c617
-rw-r--r--arch/sparc/kernel/smp_64.c1412
-rw-r--r--arch/sparc/kernel/sparc_ksyms_64.c289
-rw-r--r--arch/sparc/kernel/spiterrs.S245
-rw-r--r--arch/sparc/kernel/sstate.c127
-rw-r--r--arch/sparc/kernel/stacktrace.c64
-rw-r--r--arch/sparc/kernel/starfire.c116
-rw-r--r--arch/sparc/kernel/sun4v_ivec.S341
-rw-r--r--arch/sparc/kernel/sun4v_tlb_miss.S428
-rw-r--r--arch/sparc/kernel/sys32.S367
-rw-r--r--arch/sparc/kernel/sys_sparc32.c682
-rw-r--r--arch/sparc/kernel/sys_sparc_64.c914
-rw-r--r--arch/sparc/kernel/syscalls.S279
-rw-r--r--arch/sparc/kernel/sysfs.c313
-rw-r--r--arch/sparc/kernel/systbls.h51
-rw-r--r--arch/sparc/kernel/systbls_64.S159
-rw-r--r--arch/sparc/kernel/time_64.c862
-rw-r--r--arch/sparc/kernel/trampoline_64.S417
-rw-r--r--arch/sparc/kernel/traps_64.c2600
-rw-r--r--arch/sparc/kernel/tsb.S552
-rw-r--r--arch/sparc/kernel/ttable.S266
-rw-r--r--arch/sparc/kernel/una_asm_64.S146
-rw-r--r--arch/sparc/kernel/unaligned_64.c690
-rw-r--r--arch/sparc/kernel/us2e_cpufreq.c413
-rw-r--r--arch/sparc/kernel/us3_cpufreq.c274
-rw-r--r--arch/sparc/kernel/utrap.S29
-rw-r--r--arch/sparc/kernel/vio.c451
-rw-r--r--arch/sparc/kernel/viohs.c822
-rw-r--r--arch/sparc/kernel/visemul.c890
-rw-r--r--arch/sparc/kernel/winfixup.S156
91 files changed, 43309 insertions, 6 deletions
diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
index f061d0ada158..4b39ac68c3b1 100644
--- a/arch/sparc/Makefile
+++ b/arch/sparc/Makefile
@@ -67,13 +67,10 @@ endif
67 67
68endif 68endif
69 69
70head-$(CONFIG_SPARC32) := arch/sparc/kernel/head_$(BITS).o 70head-y := arch/sparc/kernel/head_$(BITS).o
71head-$(CONFIG_SPARC32) += arch/sparc/kernel/init_task_$(BITS).o 71head-y += arch/sparc/kernel/init_task_$(BITS).o
72head-$(CONFIG_SPARC64) := arch/sparc64/kernel/head.o
73head-$(CONFIG_SPARC64) += arch/sparc64/kernel/init_task.o
74 72
75core-$(CONFIG_SPARC32) += arch/sparc/kernel/ 73core-y += arch/sparc/kernel/
76core-$(CONFIG_SPARC64) += arch/sparc64/kernel/
77core-y += arch/sparc/mm/ arch/sparc/math-emu/ 74core-y += arch/sparc/mm/ arch/sparc/math-emu/
78 75
79libs-y += arch/sparc/prom/ 76libs-y += arch/sparc/prom/
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index 6558eea5f0bc..46439465c3b2 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -38,6 +38,19 @@ obj-$(CONFIG_SPARC32) += muldiv.o
38obj-y += prom_$(BITS).o 38obj-y += prom_$(BITS).o
39obj-y += of_device_$(BITS).o 39obj-y += of_device_$(BITS).o
40 40
41obj-$(CONFIG_SPARC64) += reboot.o
42obj-$(CONFIG_SPARC64) += sysfs.o
43obj-$(CONFIG_SPARC64) += iommu.o
44obj-$(CONFIG_SPARC64) += central.o
45obj-$(CONFIG_SPARC64) += starfire.o
46obj-$(CONFIG_SPARC64) += power.o
47obj-$(CONFIG_SPARC64) += sbus.o
48obj-$(CONFIG_SPARC64) += ebus.o
49obj-$(CONFIG_SPARC64) += visemul.o
50obj-$(CONFIG_SPARC64) += hvapi.o
51obj-$(CONFIG_SPARC64) += sstate.o
52obj-$(CONFIG_SPARC64) += mdesc.o
53
41# sparc32 do not use GENERIC_HARDIRQS but uses the generic devres implementation 54# sparc32 do not use GENERIC_HARDIRQS but uses the generic devres implementation
42obj-$(CONFIG_SPARC32) += devres.o 55obj-$(CONFIG_SPARC32) += devres.o
43devres-y := ../../../kernel/irq/devres.o 56devres-y := ../../../kernel/irq/devres.o
@@ -48,6 +61,7 @@ obj-$(CONFIG_SPARC32_PCI) += pcic.o
48 61
49obj-$(CONFIG_SMP) += trampoline_$(BITS).o smp_$(BITS).o 62obj-$(CONFIG_SMP) += trampoline_$(BITS).o smp_$(BITS).o
50obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o 63obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o
64obj-$(CONFIG_SPARC64_SMP) += hvtramp.o
51 65
52obj-y += auxio_$(BITS).o 66obj-y += auxio_$(BITS).o
53obj-$(CONFIG_SUN_PM) += apc.o pmc.o 67obj-$(CONFIG_SUN_PM) += apc.o pmc.o
@@ -56,3 +70,28 @@ obj-$(CONFIG_MODULES) += module_$(BITS).o
56obj-$(CONFIG_MODULES) += sparc_ksyms_$(BITS).o 70obj-$(CONFIG_MODULES) += sparc_ksyms_$(BITS).o
57obj-$(CONFIG_SPARC_LED) += led.o 71obj-$(CONFIG_SPARC_LED) += led.o
58obj-$(CONFIG_KGDB) += kgdb_$(BITS).o 72obj-$(CONFIG_KGDB) += kgdb_$(BITS).o
73
74
75obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
76CFLAGS_REMOVE_ftrace.o := -pg
77
78obj-$(CONFIG_STACKTRACE) += stacktrace.o
79# sparc64 PCI
80obj-$(CONFIG_SPARC64_PCI) += pci.o pci_common.o psycho_common.o
81obj-$(CONFIG_SPARC64_PCI) += pci_psycho.o pci_sabre.o pci_schizo.o
82obj-$(CONFIG_SPARC64_PCI) += pci_sun4v.o pci_sun4v_asm.o pci_fire.o
83obj-$(CONFIG_PCI_MSI) += pci_msi.o
84
85obj-$(CONFIG_COMPAT) += sys32.o sys_sparc32.o signal32.o
86
87# sparc64 cpufreq
88obj-$(CONFIG_US3_FREQ) += us3_cpufreq.o
89obj-$(CONFIG_US2E_FREQ) += us2e_cpufreq.o
90obj-$(CONFIG_US3_MC) += chmc.o
91
92obj-$(CONFIG_KPROBES) += kprobes.o
93obj-$(CONFIG_SUN_LDOMS) += ldc.o vio.o viohs.o ds.o
94
95obj-$(CONFIG_AUDIT) += audit.o
96audit--$(CONFIG_AUDIT) := compat_audit.o
97obj-$(CONFIG_COMPAT) += $(audit--y)
diff --git a/arch/sparc/kernel/audit.c b/arch/sparc/kernel/audit.c
new file mode 100644
index 000000000000..8fff0ac63d56
--- /dev/null
+++ b/arch/sparc/kernel/audit.c
@@ -0,0 +1,83 @@
1#include <linux/init.h>
2#include <linux/types.h>
3#include <linux/audit.h>
4#include <asm/unistd.h>
5
6static unsigned dir_class[] = {
7#include <asm-generic/audit_dir_write.h>
8~0U
9};
10
11static unsigned read_class[] = {
12#include <asm-generic/audit_read.h>
13~0U
14};
15
16static unsigned write_class[] = {
17#include <asm-generic/audit_write.h>
18~0U
19};
20
21static unsigned chattr_class[] = {
22#include <asm-generic/audit_change_attr.h>
23~0U
24};
25
26static unsigned signal_class[] = {
27#include <asm-generic/audit_signal.h>
28~0U
29};
30
31int audit_classify_arch(int arch)
32{
33#ifdef CONFIG_COMPAT
34 if (arch == AUDIT_ARCH_SPARC)
35 return 1;
36#endif
37 return 0;
38}
39
40int audit_classify_syscall(int abi, unsigned syscall)
41{
42#ifdef CONFIG_COMPAT
43 extern int sparc32_classify_syscall(unsigned);
44 if (abi == AUDIT_ARCH_SPARC)
45 return sparc32_classify_syscall(syscall);
46#endif
47 switch(syscall) {
48 case __NR_open:
49 return 2;
50 case __NR_openat:
51 return 3;
52 case __NR_socketcall:
53 return 4;
54 case __NR_execve:
55 return 5;
56 default:
57 return 0;
58 }
59}
60
61static int __init audit_classes_init(void)
62{
63#ifdef CONFIG_COMPAT
64 extern __u32 sparc32_dir_class[];
65 extern __u32 sparc32_write_class[];
66 extern __u32 sparc32_read_class[];
67 extern __u32 sparc32_chattr_class[];
68 extern __u32 sparc32_signal_class[];
69 audit_register_class(AUDIT_CLASS_WRITE_32, sparc32_write_class);
70 audit_register_class(AUDIT_CLASS_READ_32, sparc32_read_class);
71 audit_register_class(AUDIT_CLASS_DIR_WRITE_32, sparc32_dir_class);
72 audit_register_class(AUDIT_CLASS_CHATTR_32, sparc32_chattr_class);
73 audit_register_class(AUDIT_CLASS_SIGNAL_32, sparc32_signal_class);
74#endif
75 audit_register_class(AUDIT_CLASS_WRITE, write_class);
76 audit_register_class(AUDIT_CLASS_READ, read_class);
77 audit_register_class(AUDIT_CLASS_DIR_WRITE, dir_class);
78 audit_register_class(AUDIT_CLASS_CHATTR, chattr_class);
79 audit_register_class(AUDIT_CLASS_SIGNAL, signal_class);
80 return 0;
81}
82
83__initcall(audit_classes_init);
diff --git a/arch/sparc/kernel/auxio_64.c b/arch/sparc/kernel/auxio_64.c
new file mode 100644
index 000000000000..8b67347d4221
--- /dev/null
+++ b/arch/sparc/kernel/auxio_64.c
@@ -0,0 +1,149 @@
1/* auxio.c: Probing for the Sparc AUXIO register at boot time.
2 *
3 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
4 *
5 * Refactoring for unified NCR/PCIO support 2002 Eric Brower (ebrower@usa.net)
6 */
7
8#include <linux/module.h>
9#include <linux/kernel.h>
10#include <linux/init.h>
11#include <linux/ioport.h>
12#include <linux/of_device.h>
13
14#include <asm/prom.h>
15#include <asm/io.h>
16#include <asm/auxio.h>
17
18void __iomem *auxio_register = NULL;
19EXPORT_SYMBOL(auxio_register);
20
21enum auxio_type {
22 AUXIO_TYPE_NODEV,
23 AUXIO_TYPE_SBUS,
24 AUXIO_TYPE_EBUS
25};
26
27static enum auxio_type auxio_devtype = AUXIO_TYPE_NODEV;
28static DEFINE_SPINLOCK(auxio_lock);
29
30static void __auxio_rmw(u8 bits_on, u8 bits_off, int ebus)
31{
32 if (auxio_register) {
33 unsigned long flags;
34 u8 regval, newval;
35
36 spin_lock_irqsave(&auxio_lock, flags);
37
38 regval = (ebus ?
39 (u8) readl(auxio_register) :
40 sbus_readb(auxio_register));
41 newval = regval | bits_on;
42 newval &= ~bits_off;
43 if (!ebus)
44 newval &= ~AUXIO_AUX1_MASK;
45 if (ebus)
46 writel((u32) newval, auxio_register);
47 else
48 sbus_writeb(newval, auxio_register);
49
50 spin_unlock_irqrestore(&auxio_lock, flags);
51 }
52}
53
54static void __auxio_set_bit(u8 bit, int on, int ebus)
55{
56 u8 bits_on = (ebus ? AUXIO_PCIO_LED : AUXIO_AUX1_LED);
57 u8 bits_off = 0;
58
59 if (!on) {
60 u8 tmp = bits_off;
61 bits_off = bits_on;
62 bits_on = tmp;
63 }
64 __auxio_rmw(bits_on, bits_off, ebus);
65}
66
67void auxio_set_led(int on)
68{
69 int ebus = auxio_devtype == AUXIO_TYPE_EBUS;
70 u8 bit;
71
72 bit = (ebus ? AUXIO_PCIO_LED : AUXIO_AUX1_LED);
73 __auxio_set_bit(bit, on, ebus);
74}
75
76static void __auxio_sbus_set_lte(int on)
77{
78 __auxio_set_bit(AUXIO_AUX1_LTE, on, 0);
79}
80
81void auxio_set_lte(int on)
82{
83 switch(auxio_devtype) {
84 case AUXIO_TYPE_SBUS:
85 __auxio_sbus_set_lte(on);
86 break;
87 case AUXIO_TYPE_EBUS:
88 /* FALL-THROUGH */
89 default:
90 break;
91 }
92}
93
94static struct of_device_id __initdata auxio_match[] = {
95 {
96 .name = "auxio",
97 },
98 {},
99};
100
101MODULE_DEVICE_TABLE(of, auxio_match);
102
103static int __devinit auxio_probe(struct of_device *dev, const struct of_device_id *match)
104{
105 struct device_node *dp = dev->node;
106 unsigned long size;
107
108 if (!strcmp(dp->parent->name, "ebus")) {
109 auxio_devtype = AUXIO_TYPE_EBUS;
110 size = sizeof(u32);
111 } else if (!strcmp(dp->parent->name, "sbus")) {
112 auxio_devtype = AUXIO_TYPE_SBUS;
113 size = 1;
114 } else {
115 printk("auxio: Unknown parent bus type [%s]\n",
116 dp->parent->name);
117 return -ENODEV;
118 }
119 auxio_register = of_ioremap(&dev->resource[0], 0, size, "auxio");
120 if (!auxio_register)
121 return -ENODEV;
122
123 printk(KERN_INFO "AUXIO: Found device at %s\n",
124 dp->full_name);
125
126 if (auxio_devtype == AUXIO_TYPE_EBUS)
127 auxio_set_led(AUXIO_LED_ON);
128
129 return 0;
130}
131
132static struct of_platform_driver auxio_driver = {
133 .match_table = auxio_match,
134 .probe = auxio_probe,
135 .driver = {
136 .name = "auxio",
137 },
138};
139
140static int __init auxio_init(void)
141{
142 return of_register_driver(&auxio_driver, &of_platform_bus_type);
143}
144
145/* Must be after subsys_initcall() so that busses are probed. Must
146 * be before device_initcall() because things like the floppy driver
147 * need to use the AUXIO register.
148 */
149fs_initcall(auxio_init);
diff --git a/arch/sparc/kernel/central.c b/arch/sparc/kernel/central.c
new file mode 100644
index 000000000000..05f1c916db06
--- /dev/null
+++ b/arch/sparc/kernel/central.c
@@ -0,0 +1,268 @@
1/* central.c: Central FHC driver for Sunfire/Starfire/Wildfire.
2 *
3 * Copyright (C) 1997, 1999, 2008 David S. Miller (davem@davemloft.net)
4 */
5
6#include <linux/kernel.h>
7#include <linux/types.h>
8#include <linux/string.h>
9#include <linux/init.h>
10#include <linux/of_device.h>
11#include <linux/platform_device.h>
12
13#include <asm/fhc.h>
14#include <asm/upa.h>
15
16struct clock_board {
17 void __iomem *clock_freq_regs;
18 void __iomem *clock_regs;
19 void __iomem *clock_ver_reg;
20 int num_slots;
21 struct resource leds_resource;
22 struct platform_device leds_pdev;
23};
24
25struct fhc {
26 void __iomem *pregs;
27 bool central;
28 bool jtag_master;
29 int board_num;
30 struct resource leds_resource;
31 struct platform_device leds_pdev;
32};
33
34static int __devinit clock_board_calc_nslots(struct clock_board *p)
35{
36 u8 reg = upa_readb(p->clock_regs + CLOCK_STAT1) & 0xc0;
37
38 switch (reg) {
39 case 0x40:
40 return 16;
41
42 case 0xc0:
43 return 8;
44
45 case 0x80:
46 reg = 0;
47 if (p->clock_ver_reg)
48 reg = upa_readb(p->clock_ver_reg);
49 if (reg) {
50 if (reg & 0x80)
51 return 4;
52 else
53 return 5;
54 }
55 /* Fallthrough */
56 default:
57 return 4;
58 }
59}
60
61static int __devinit clock_board_probe(struct of_device *op,
62 const struct of_device_id *match)
63{
64 struct clock_board *p = kzalloc(sizeof(*p), GFP_KERNEL);
65 int err = -ENOMEM;
66
67 if (!p) {
68 printk(KERN_ERR "clock_board: Cannot allocate struct clock_board\n");
69 goto out;
70 }
71
72 p->clock_freq_regs = of_ioremap(&op->resource[0], 0,
73 resource_size(&op->resource[0]),
74 "clock_board_freq");
75 if (!p->clock_freq_regs) {
76 printk(KERN_ERR "clock_board: Cannot map clock_freq_regs\n");
77 goto out_free;
78 }
79
80 p->clock_regs = of_ioremap(&op->resource[1], 0,
81 resource_size(&op->resource[1]),
82 "clock_board_regs");
83 if (!p->clock_regs) {
84 printk(KERN_ERR "clock_board: Cannot map clock_regs\n");
85 goto out_unmap_clock_freq_regs;
86 }
87
88 if (op->resource[2].flags) {
89 p->clock_ver_reg = of_ioremap(&op->resource[2], 0,
90 resource_size(&op->resource[2]),
91 "clock_ver_reg");
92 if (!p->clock_ver_reg) {
93 printk(KERN_ERR "clock_board: Cannot map clock_ver_reg\n");
94 goto out_unmap_clock_regs;
95 }
96 }
97
98 p->num_slots = clock_board_calc_nslots(p);
99
100 p->leds_resource.start = (unsigned long)
101 (p->clock_regs + CLOCK_CTRL);
102 p->leds_resource.end = p->leds_resource.end;
103 p->leds_resource.name = "leds";
104
105 p->leds_pdev.name = "sunfire-clockboard-leds";
106 p->leds_pdev.resource = &p->leds_resource;
107 p->leds_pdev.num_resources = 1;
108 p->leds_pdev.dev.parent = &op->dev;
109
110 err = platform_device_register(&p->leds_pdev);
111 if (err) {
112 printk(KERN_ERR "clock_board: Could not register LEDS "
113 "platform device\n");
114 goto out_unmap_clock_ver_reg;
115 }
116
117 printk(KERN_INFO "clock_board: Detected %d slot Enterprise system.\n",
118 p->num_slots);
119
120 err = 0;
121out:
122 return err;
123
124out_unmap_clock_ver_reg:
125 if (p->clock_ver_reg)
126 of_iounmap(&op->resource[2], p->clock_ver_reg,
127 resource_size(&op->resource[2]));
128
129out_unmap_clock_regs:
130 of_iounmap(&op->resource[1], p->clock_regs,
131 resource_size(&op->resource[1]));
132
133out_unmap_clock_freq_regs:
134 of_iounmap(&op->resource[0], p->clock_freq_regs,
135 resource_size(&op->resource[0]));
136
137out_free:
138 kfree(p);
139 goto out;
140}
141
142static struct of_device_id __initdata clock_board_match[] = {
143 {
144 .name = "clock-board",
145 },
146 {},
147};
148
149static struct of_platform_driver clock_board_driver = {
150 .match_table = clock_board_match,
151 .probe = clock_board_probe,
152 .driver = {
153 .name = "clock_board",
154 },
155};
156
157static int __devinit fhc_probe(struct of_device *op,
158 const struct of_device_id *match)
159{
160 struct fhc *p = kzalloc(sizeof(*p), GFP_KERNEL);
161 int err = -ENOMEM;
162 u32 reg;
163
164 if (!p) {
165 printk(KERN_ERR "fhc: Cannot allocate struct fhc\n");
166 goto out;
167 }
168
169 if (!strcmp(op->node->parent->name, "central"))
170 p->central = true;
171
172 p->pregs = of_ioremap(&op->resource[0], 0,
173 resource_size(&op->resource[0]),
174 "fhc_pregs");
175 if (!p->pregs) {
176 printk(KERN_ERR "fhc: Cannot map pregs\n");
177 goto out_free;
178 }
179
180 if (p->central) {
181 reg = upa_readl(p->pregs + FHC_PREGS_BSR);
182 p->board_num = ((reg >> 16) & 1) | ((reg >> 12) & 0x0e);
183 } else {
184 p->board_num = of_getintprop_default(op->node, "board#", -1);
185 if (p->board_num == -1) {
186 printk(KERN_ERR "fhc: No board# property\n");
187 goto out_unmap_pregs;
188 }
189 if (upa_readl(p->pregs + FHC_PREGS_JCTRL) & FHC_JTAG_CTRL_MENAB)
190 p->jtag_master = true;
191 }
192
193 if (!p->central) {
194 p->leds_resource.start = (unsigned long)
195 (p->pregs + FHC_PREGS_CTRL);
196 p->leds_resource.end = p->leds_resource.end;
197 p->leds_resource.name = "leds";
198
199 p->leds_pdev.name = "sunfire-fhc-leds";
200 p->leds_pdev.resource = &p->leds_resource;
201 p->leds_pdev.num_resources = 1;
202 p->leds_pdev.dev.parent = &op->dev;
203
204 err = platform_device_register(&p->leds_pdev);
205 if (err) {
206 printk(KERN_ERR "fhc: Could not register LEDS "
207 "platform device\n");
208 goto out_unmap_pregs;
209 }
210 }
211 reg = upa_readl(p->pregs + FHC_PREGS_CTRL);
212
213 if (!p->central)
214 reg |= FHC_CONTROL_IXIST;
215
216 reg &= ~(FHC_CONTROL_AOFF |
217 FHC_CONTROL_BOFF |
218 FHC_CONTROL_SLINE);
219
220 upa_writel(reg, p->pregs + FHC_PREGS_CTRL);
221 upa_readl(p->pregs + FHC_PREGS_CTRL);
222
223 reg = upa_readl(p->pregs + FHC_PREGS_ID);
224 printk(KERN_INFO "fhc: Board #%d, Version[%x] PartID[%x] Manuf[%x] %s\n",
225 p->board_num,
226 (reg & FHC_ID_VERS) >> 28,
227 (reg & FHC_ID_PARTID) >> 12,
228 (reg & FHC_ID_MANUF) >> 1,
229 (p->jtag_master ?
230 "(JTAG Master)" :
231 (p->central ? "(Central)" : "")));
232
233 err = 0;
234
235out:
236 return err;
237
238out_unmap_pregs:
239 of_iounmap(&op->resource[0], p->pregs, resource_size(&op->resource[0]));
240
241out_free:
242 kfree(p);
243 goto out;
244}
245
246static struct of_device_id __initdata fhc_match[] = {
247 {
248 .name = "fhc",
249 },
250 {},
251};
252
253static struct of_platform_driver fhc_driver = {
254 .match_table = fhc_match,
255 .probe = fhc_probe,
256 .driver = {
257 .name = "fhc",
258 },
259};
260
261static int __init sunfire_init(void)
262{
263 (void) of_register_driver(&fhc_driver, &of_platform_bus_type);
264 (void) of_register_driver(&clock_board_driver, &of_platform_bus_type);
265 return 0;
266}
267
268subsys_initcall(sunfire_init);
diff --git a/arch/sparc/kernel/cherrs.S b/arch/sparc/kernel/cherrs.S
new file mode 100644
index 000000000000..4ee1ad420862
--- /dev/null
+++ b/arch/sparc/kernel/cherrs.S
@@ -0,0 +1,579 @@
1 /* These get patched into the trap table at boot time
2 * once we know we have a cheetah processor.
3 */
4 .globl cheetah_fecc_trap_vector
5 .type cheetah_fecc_trap_vector,#function
6cheetah_fecc_trap_vector:
7 membar #Sync
8 ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
9 andn %g1, DCU_DC | DCU_IC, %g1
10 stxa %g1, [%g0] ASI_DCU_CONTROL_REG
11 membar #Sync
12 sethi %hi(cheetah_fast_ecc), %g2
13 jmpl %g2 + %lo(cheetah_fast_ecc), %g0
14 mov 0, %g1
15 .size cheetah_fecc_trap_vector,.-cheetah_fecc_trap_vector
16
17 .globl cheetah_fecc_trap_vector_tl1
18 .type cheetah_fecc_trap_vector_tl1,#function
19cheetah_fecc_trap_vector_tl1:
20 membar #Sync
21 ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
22 andn %g1, DCU_DC | DCU_IC, %g1
23 stxa %g1, [%g0] ASI_DCU_CONTROL_REG
24 membar #Sync
25 sethi %hi(cheetah_fast_ecc), %g2
26 jmpl %g2 + %lo(cheetah_fast_ecc), %g0
27 mov 1, %g1
28 .size cheetah_fecc_trap_vector_tl1,.-cheetah_fecc_trap_vector_tl1
29
30 .globl cheetah_cee_trap_vector
31 .type cheetah_cee_trap_vector,#function
32cheetah_cee_trap_vector:
33 membar #Sync
34 ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
35 andn %g1, DCU_IC, %g1
36 stxa %g1, [%g0] ASI_DCU_CONTROL_REG
37 membar #Sync
38 sethi %hi(cheetah_cee), %g2
39 jmpl %g2 + %lo(cheetah_cee), %g0
40 mov 0, %g1
41 .size cheetah_cee_trap_vector,.-cheetah_cee_trap_vector
42
43 .globl cheetah_cee_trap_vector_tl1
44 .type cheetah_cee_trap_vector_tl1,#function
45cheetah_cee_trap_vector_tl1:
46 membar #Sync
47 ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
48 andn %g1, DCU_IC, %g1
49 stxa %g1, [%g0] ASI_DCU_CONTROL_REG
50 membar #Sync
51 sethi %hi(cheetah_cee), %g2
52 jmpl %g2 + %lo(cheetah_cee), %g0
53 mov 1, %g1
54 .size cheetah_cee_trap_vector_tl1,.-cheetah_cee_trap_vector_tl1
55
56 .globl cheetah_deferred_trap_vector
57 .type cheetah_deferred_trap_vector,#function
58cheetah_deferred_trap_vector:
59 membar #Sync
60 ldxa [%g0] ASI_DCU_CONTROL_REG, %g1;
61 andn %g1, DCU_DC | DCU_IC, %g1;
62 stxa %g1, [%g0] ASI_DCU_CONTROL_REG;
63 membar #Sync;
64 sethi %hi(cheetah_deferred_trap), %g2
65 jmpl %g2 + %lo(cheetah_deferred_trap), %g0
66 mov 0, %g1
67 .size cheetah_deferred_trap_vector,.-cheetah_deferred_trap_vector
68
69 .globl cheetah_deferred_trap_vector_tl1
70 .type cheetah_deferred_trap_vector_tl1,#function
71cheetah_deferred_trap_vector_tl1:
72 membar #Sync;
73 ldxa [%g0] ASI_DCU_CONTROL_REG, %g1;
74 andn %g1, DCU_DC | DCU_IC, %g1;
75 stxa %g1, [%g0] ASI_DCU_CONTROL_REG;
76 membar #Sync;
77 sethi %hi(cheetah_deferred_trap), %g2
78 jmpl %g2 + %lo(cheetah_deferred_trap), %g0
79 mov 1, %g1
80 .size cheetah_deferred_trap_vector_tl1,.-cheetah_deferred_trap_vector_tl1
81
82 /* Cheetah+ specific traps. These are for the new I/D cache parity
83 * error traps. The first argument to cheetah_plus_parity_handler
84 * is encoded as follows:
85 *
86 * Bit0: 0=dcache,1=icache
87 * Bit1: 0=recoverable,1=unrecoverable
88 */
89 .globl cheetah_plus_dcpe_trap_vector
90 .type cheetah_plus_dcpe_trap_vector,#function
91cheetah_plus_dcpe_trap_vector:
92 membar #Sync
93 sethi %hi(do_cheetah_plus_data_parity), %g7
94 jmpl %g7 + %lo(do_cheetah_plus_data_parity), %g0
95 nop
96 nop
97 nop
98 nop
99 nop
100 .size cheetah_plus_dcpe_trap_vector,.-cheetah_plus_dcpe_trap_vector
101
102 .type do_cheetah_plus_data_parity,#function
103do_cheetah_plus_data_parity:
104 rdpr %pil, %g2
105 wrpr %g0, PIL_NORMAL_MAX, %pil
106 ba,pt %xcc, etrap_irq
107 rd %pc, %g7
108#ifdef CONFIG_TRACE_IRQFLAGS
109 call trace_hardirqs_off
110 nop
111#endif
112 mov 0x0, %o0
113 call cheetah_plus_parity_error
114 add %sp, PTREGS_OFF, %o1
115 ba,a,pt %xcc, rtrap_irq
116 .size do_cheetah_plus_data_parity,.-do_cheetah_plus_data_parity
117
118 .globl cheetah_plus_dcpe_trap_vector_tl1
119 .type cheetah_plus_dcpe_trap_vector_tl1,#function
120cheetah_plus_dcpe_trap_vector_tl1:
121 membar #Sync
122 wrpr PSTATE_IG | PSTATE_PEF | PSTATE_PRIV, %pstate
123 sethi %hi(do_dcpe_tl1), %g3
124 jmpl %g3 + %lo(do_dcpe_tl1), %g0
125 nop
126 nop
127 nop
128 nop
129 .size cheetah_plus_dcpe_trap_vector_tl1,.-cheetah_plus_dcpe_trap_vector_tl1
130
131 .globl cheetah_plus_icpe_trap_vector
132 .type cheetah_plus_icpe_trap_vector,#function
133cheetah_plus_icpe_trap_vector:
134 membar #Sync
135 sethi %hi(do_cheetah_plus_insn_parity), %g7
136 jmpl %g7 + %lo(do_cheetah_plus_insn_parity), %g0
137 nop
138 nop
139 nop
140 nop
141 nop
142 .size cheetah_plus_icpe_trap_vector,.-cheetah_plus_icpe_trap_vector
143
144 .type do_cheetah_plus_insn_parity,#function
145do_cheetah_plus_insn_parity:
146 rdpr %pil, %g2
147 wrpr %g0, PIL_NORMAL_MAX, %pil
148 ba,pt %xcc, etrap_irq
149 rd %pc, %g7
150#ifdef CONFIG_TRACE_IRQFLAGS
151 call trace_hardirqs_off
152 nop
153#endif
154 mov 0x1, %o0
155 call cheetah_plus_parity_error
156 add %sp, PTREGS_OFF, %o1
157 ba,a,pt %xcc, rtrap_irq
158 .size do_cheetah_plus_insn_parity,.-do_cheetah_plus_insn_parity
159
160 .globl cheetah_plus_icpe_trap_vector_tl1
161 .type cheetah_plus_icpe_trap_vector_tl1,#function
162cheetah_plus_icpe_trap_vector_tl1:
163 membar #Sync
164 wrpr PSTATE_IG | PSTATE_PEF | PSTATE_PRIV, %pstate
165 sethi %hi(do_icpe_tl1), %g3
166 jmpl %g3 + %lo(do_icpe_tl1), %g0
167 nop
168 nop
169 nop
170 nop
171 .size cheetah_plus_icpe_trap_vector_tl1,.-cheetah_plus_icpe_trap_vector_tl1
172
173 /* If we take one of these traps when tl >= 1, then we
174 * jump to interrupt globals. If some trap level above us
175 * was also using interrupt globals, we cannot recover.
176 * We may use all interrupt global registers except %g6.
177 */
178 .globl do_dcpe_tl1
179 .type do_dcpe_tl1,#function
180do_dcpe_tl1:
181 rdpr %tl, %g1 ! Save original trap level
182 mov 1, %g2 ! Setup TSTATE checking loop
183 sethi %hi(TSTATE_IG), %g3 ! TSTATE mask bit
1841: wrpr %g2, %tl ! Set trap level to check
185 rdpr %tstate, %g4 ! Read TSTATE for this level
186 andcc %g4, %g3, %g0 ! Interrupt globals in use?
187 bne,a,pn %xcc, do_dcpe_tl1_fatal ! Yep, irrecoverable
188 wrpr %g1, %tl ! Restore original trap level
189 add %g2, 1, %g2 ! Next trap level
190 cmp %g2, %g1 ! Hit them all yet?
191 ble,pt %icc, 1b ! Not yet
192 nop
193 wrpr %g1, %tl ! Restore original trap level
194do_dcpe_tl1_nonfatal: /* Ok we may use interrupt globals safely. */
195 sethi %hi(dcache_parity_tl1_occurred), %g2
196 lduw [%g2 + %lo(dcache_parity_tl1_occurred)], %g1
197 add %g1, 1, %g1
198 stw %g1, [%g2 + %lo(dcache_parity_tl1_occurred)]
199 /* Reset D-cache parity */
200 sethi %hi(1 << 16), %g1 ! D-cache size
201 mov (1 << 5), %g2 ! D-cache line size
202 sub %g1, %g2, %g1 ! Move down 1 cacheline
2031: srl %g1, 14, %g3 ! Compute UTAG
204 membar #Sync
205 stxa %g3, [%g1] ASI_DCACHE_UTAG
206 membar #Sync
207 sub %g2, 8, %g3 ! 64-bit data word within line
2082: membar #Sync
209 stxa %g0, [%g1 + %g3] ASI_DCACHE_DATA
210 membar #Sync
211 subcc %g3, 8, %g3 ! Next 64-bit data word
212 bge,pt %icc, 2b
213 nop
214 subcc %g1, %g2, %g1 ! Next cacheline
215 bge,pt %icc, 1b
216 nop
217 ba,pt %xcc, dcpe_icpe_tl1_common
218 nop
219
220do_dcpe_tl1_fatal:
221 sethi %hi(1f), %g7
222 ba,pt %xcc, etraptl1
2231: or %g7, %lo(1b), %g7
224 mov 0x2, %o0
225 call cheetah_plus_parity_error
226 add %sp, PTREGS_OFF, %o1
227 ba,pt %xcc, rtrap
228 nop
229 .size do_dcpe_tl1,.-do_dcpe_tl1
230
231 .globl do_icpe_tl1
232 .type do_icpe_tl1,#function
233do_icpe_tl1:
234 rdpr %tl, %g1 ! Save original trap level
235 mov 1, %g2 ! Setup TSTATE checking loop
236 sethi %hi(TSTATE_IG), %g3 ! TSTATE mask bit
2371: wrpr %g2, %tl ! Set trap level to check
238 rdpr %tstate, %g4 ! Read TSTATE for this level
239 andcc %g4, %g3, %g0 ! Interrupt globals in use?
240 bne,a,pn %xcc, do_icpe_tl1_fatal ! Yep, irrecoverable
241 wrpr %g1, %tl ! Restore original trap level
242 add %g2, 1, %g2 ! Next trap level
243 cmp %g2, %g1 ! Hit them all yet?
244 ble,pt %icc, 1b ! Not yet
245 nop
246 wrpr %g1, %tl ! Restore original trap level
247do_icpe_tl1_nonfatal: /* Ok we may use interrupt globals safely. */
248 sethi %hi(icache_parity_tl1_occurred), %g2
249 lduw [%g2 + %lo(icache_parity_tl1_occurred)], %g1
250 add %g1, 1, %g1
251 stw %g1, [%g2 + %lo(icache_parity_tl1_occurred)]
252 /* Flush I-cache */
253 sethi %hi(1 << 15), %g1 ! I-cache size
254 mov (1 << 5), %g2 ! I-cache line size
255 sub %g1, %g2, %g1
2561: or %g1, (2 << 3), %g3
257 stxa %g0, [%g3] ASI_IC_TAG
258 membar #Sync
259 subcc %g1, %g2, %g1
260 bge,pt %icc, 1b
261 nop
262 ba,pt %xcc, dcpe_icpe_tl1_common
263 nop
264
265do_icpe_tl1_fatal:
266 sethi %hi(1f), %g7
267 ba,pt %xcc, etraptl1
2681: or %g7, %lo(1b), %g7
269 mov 0x3, %o0
270 call cheetah_plus_parity_error
271 add %sp, PTREGS_OFF, %o1
272 ba,pt %xcc, rtrap
273 nop
274 .size do_icpe_tl1,.-do_icpe_tl1
275
276 .type dcpe_icpe_tl1_common,#function
277dcpe_icpe_tl1_common:
278 /* Flush D-cache, re-enable D/I caches in DCU and finally
279 * retry the trapping instruction.
280 */
281 sethi %hi(1 << 16), %g1 ! D-cache size
282 mov (1 << 5), %g2 ! D-cache line size
283 sub %g1, %g2, %g1
2841: stxa %g0, [%g1] ASI_DCACHE_TAG
285 membar #Sync
286 subcc %g1, %g2, %g1
287 bge,pt %icc, 1b
288 nop
289 ldxa [%g0] ASI_DCU_CONTROL_REG, %g1
290 or %g1, (DCU_DC | DCU_IC), %g1
291 stxa %g1, [%g0] ASI_DCU_CONTROL_REG
292 membar #Sync
293 retry
294 .size dcpe_icpe_tl1_common,.-dcpe_icpe_tl1_common
295
296 /* Capture I/D/E-cache state into per-cpu error scoreboard.
297 *
298 * %g1: (TL>=0) ? 1 : 0
299 * %g2: scratch
300 * %g3: scratch
301 * %g4: AFSR
302 * %g5: AFAR
303 * %g6: unused, will have current thread ptr after etrap
304 * %g7: scratch
305 */
306 .type __cheetah_log_error,#function
307__cheetah_log_error:
308 /* Put "TL1" software bit into AFSR. */
309 and %g1, 0x1, %g1
310 sllx %g1, 63, %g2
311 or %g4, %g2, %g4
312
313 /* Get log entry pointer for this cpu at this trap level. */
314 BRANCH_IF_JALAPENO(g2,g3,50f)
315 ldxa [%g0] ASI_SAFARI_CONFIG, %g2
316 srlx %g2, 17, %g2
317 ba,pt %xcc, 60f
318 and %g2, 0x3ff, %g2
319
32050: ldxa [%g0] ASI_JBUS_CONFIG, %g2
321 srlx %g2, 17, %g2
322 and %g2, 0x1f, %g2
323
32460: sllx %g2, 9, %g2
325 sethi %hi(cheetah_error_log), %g3
326 ldx [%g3 + %lo(cheetah_error_log)], %g3
327 brz,pn %g3, 80f
328 nop
329
330 add %g3, %g2, %g3
331 sllx %g1, 8, %g1
332 add %g3, %g1, %g1
333
334 /* %g1 holds pointer to the top of the logging scoreboard */
335 ldx [%g1 + 0x0], %g7
336 cmp %g7, -1
337 bne,pn %xcc, 80f
338 nop
339
340 stx %g4, [%g1 + 0x0]
341 stx %g5, [%g1 + 0x8]
342 add %g1, 0x10, %g1
343
344 /* %g1 now points to D-cache logging area */
345 set 0x3ff8, %g2 /* DC_addr mask */
346 and %g5, %g2, %g2 /* DC_addr bits of AFAR */
347 srlx %g5, 12, %g3
348 or %g3, 1, %g3 /* PHYS tag + valid */
349
35010: ldxa [%g2] ASI_DCACHE_TAG, %g7
351 cmp %g3, %g7 /* TAG match? */
352 bne,pt %xcc, 13f
353 nop
354
355 /* Yep, what we want, capture state. */
356 stx %g2, [%g1 + 0x20]
357 stx %g7, [%g1 + 0x28]
358
359 /* A membar Sync is required before and after utag access. */
360 membar #Sync
361 ldxa [%g2] ASI_DCACHE_UTAG, %g7
362 membar #Sync
363 stx %g7, [%g1 + 0x30]
364 ldxa [%g2] ASI_DCACHE_SNOOP_TAG, %g7
365 stx %g7, [%g1 + 0x38]
366 clr %g3
367
36812: ldxa [%g2 + %g3] ASI_DCACHE_DATA, %g7
369 stx %g7, [%g1]
370 add %g3, (1 << 5), %g3
371 cmp %g3, (4 << 5)
372 bl,pt %xcc, 12b
373 add %g1, 0x8, %g1
374
375 ba,pt %xcc, 20f
376 add %g1, 0x20, %g1
377
37813: sethi %hi(1 << 14), %g7
379 add %g2, %g7, %g2
380 srlx %g2, 14, %g7
381 cmp %g7, 4
382 bl,pt %xcc, 10b
383 nop
384
385 add %g1, 0x40, %g1
386
387 /* %g1 now points to I-cache logging area */
38820: set 0x1fe0, %g2 /* IC_addr mask */
389 and %g5, %g2, %g2 /* IC_addr bits of AFAR */
390 sllx %g2, 1, %g2 /* IC_addr[13:6]==VA[12:5] */
391 srlx %g5, (13 - 8), %g3 /* Make PTAG */
392 andn %g3, 0xff, %g3 /* Mask off undefined bits */
393
39421: ldxa [%g2] ASI_IC_TAG, %g7
395 andn %g7, 0xff, %g7
396 cmp %g3, %g7
397 bne,pt %xcc, 23f
398 nop
399
400 /* Yep, what we want, capture state. */
401 stx %g2, [%g1 + 0x40]
402 stx %g7, [%g1 + 0x48]
403 add %g2, (1 << 3), %g2
404 ldxa [%g2] ASI_IC_TAG, %g7
405 add %g2, (1 << 3), %g2
406 stx %g7, [%g1 + 0x50]
407 ldxa [%g2] ASI_IC_TAG, %g7
408 add %g2, (1 << 3), %g2
409 stx %g7, [%g1 + 0x60]
410 ldxa [%g2] ASI_IC_TAG, %g7
411 stx %g7, [%g1 + 0x68]
412 sub %g2, (3 << 3), %g2
413 ldxa [%g2] ASI_IC_STAG, %g7
414 stx %g7, [%g1 + 0x58]
415 clr %g3
416 srlx %g2, 2, %g2
417
41822: ldxa [%g2 + %g3] ASI_IC_INSTR, %g7
419 stx %g7, [%g1]
420 add %g3, (1 << 3), %g3
421 cmp %g3, (8 << 3)
422 bl,pt %xcc, 22b
423 add %g1, 0x8, %g1
424
425 ba,pt %xcc, 30f
426 add %g1, 0x30, %g1
427
42823: sethi %hi(1 << 14), %g7
429 add %g2, %g7, %g2
430 srlx %g2, 14, %g7
431 cmp %g7, 4
432 bl,pt %xcc, 21b
433 nop
434
435 add %g1, 0x70, %g1
436
437 /* %g1 now points to E-cache logging area */
43830: andn %g5, (32 - 1), %g2
439 stx %g2, [%g1 + 0x20]
440 ldxa [%g2] ASI_EC_TAG_DATA, %g7
441 stx %g7, [%g1 + 0x28]
442 ldxa [%g2] ASI_EC_R, %g0
443 clr %g3
444
44531: ldxa [%g3] ASI_EC_DATA, %g7
446 stx %g7, [%g1 + %g3]
447 add %g3, 0x8, %g3
448 cmp %g3, 0x20
449
450 bl,pt %xcc, 31b
451 nop
45280:
453 rdpr %tt, %g2
454 cmp %g2, 0x70
455 be c_fast_ecc
456 cmp %g2, 0x63
457 be c_cee
458 nop
459 ba,pt %xcc, c_deferred
460 .size __cheetah_log_error,.-__cheetah_log_error
461
462 /* Cheetah FECC trap handling, we get here from tl{0,1}_fecc
463 * in the trap table. That code has done a memory barrier
464 * and has disabled both the I-cache and D-cache in the DCU
465 * control register. The I-cache is disabled so that we may
466 * capture the corrupted cache line, and the D-cache is disabled
467 * because corrupt data may have been placed there and we don't
468 * want to reference it.
469 *
470 * %g1 is one if this trap occurred at %tl >= 1.
471 *
472 * Next, we turn off error reporting so that we don't recurse.
473 */
474 .globl cheetah_fast_ecc
475 .type cheetah_fast_ecc,#function
476cheetah_fast_ecc:
477 ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2
478 andn %g2, ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN, %g2
479 stxa %g2, [%g0] ASI_ESTATE_ERROR_EN
480 membar #Sync
481
482 /* Fetch and clear AFSR/AFAR */
483 ldxa [%g0] ASI_AFSR, %g4
484 ldxa [%g0] ASI_AFAR, %g5
485 stxa %g4, [%g0] ASI_AFSR
486 membar #Sync
487
488 ba,pt %xcc, __cheetah_log_error
489 nop
490 .size cheetah_fast_ecc,.-cheetah_fast_ecc
491
492 .type c_fast_ecc,#function
493c_fast_ecc:
494 rdpr %pil, %g2
495 wrpr %g0, PIL_NORMAL_MAX, %pil
496 ba,pt %xcc, etrap_irq
497 rd %pc, %g7
498#ifdef CONFIG_TRACE_IRQFLAGS
499 call trace_hardirqs_off
500 nop
501#endif
502 mov %l4, %o1
503 mov %l5, %o2
504 call cheetah_fecc_handler
505 add %sp, PTREGS_OFF, %o0
506 ba,a,pt %xcc, rtrap_irq
507 .size c_fast_ecc,.-c_fast_ecc
508
509 /* Our caller has disabled I-cache and performed membar Sync. */
510 .globl cheetah_cee
511 .type cheetah_cee,#function
512cheetah_cee:
513 ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2
514 andn %g2, ESTATE_ERROR_CEEN, %g2
515 stxa %g2, [%g0] ASI_ESTATE_ERROR_EN
516 membar #Sync
517
518 /* Fetch and clear AFSR/AFAR */
519 ldxa [%g0] ASI_AFSR, %g4
520 ldxa [%g0] ASI_AFAR, %g5
521 stxa %g4, [%g0] ASI_AFSR
522 membar #Sync
523
524 ba,pt %xcc, __cheetah_log_error
525 nop
526 .size cheetah_cee,.-cheetah_cee
527
528 .type c_cee,#function
529c_cee:
530 rdpr %pil, %g2
531 wrpr %g0, PIL_NORMAL_MAX, %pil
532 ba,pt %xcc, etrap_irq
533 rd %pc, %g7
534#ifdef CONFIG_TRACE_IRQFLAGS
535 call trace_hardirqs_off
536 nop
537#endif
538 mov %l4, %o1
539 mov %l5, %o2
540 call cheetah_cee_handler
541 add %sp, PTREGS_OFF, %o0
542 ba,a,pt %xcc, rtrap_irq
543 .size c_cee,.-c_cee
544
545 /* Our caller has disabled I-cache+D-cache and performed membar Sync. */
546 .globl cheetah_deferred_trap
547 .type cheetah_deferred_trap,#function
548cheetah_deferred_trap:
549 ldxa [%g0] ASI_ESTATE_ERROR_EN, %g2
550 andn %g2, ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN, %g2
551 stxa %g2, [%g0] ASI_ESTATE_ERROR_EN
552 membar #Sync
553
554 /* Fetch and clear AFSR/AFAR */
555 ldxa [%g0] ASI_AFSR, %g4
556 ldxa [%g0] ASI_AFAR, %g5
557 stxa %g4, [%g0] ASI_AFSR
558 membar #Sync
559
560 ba,pt %xcc, __cheetah_log_error
561 nop
562 .size cheetah_deferred_trap,.-cheetah_deferred_trap
563
564 .type c_deferred,#function
565c_deferred:
566 rdpr %pil, %g2
567 wrpr %g0, PIL_NORMAL_MAX, %pil
568 ba,pt %xcc, etrap_irq
569 rd %pc, %g7
570#ifdef CONFIG_TRACE_IRQFLAGS
571 call trace_hardirqs_off
572 nop
573#endif
574 mov %l4, %o1
575 mov %l5, %o2
576 call cheetah_deferred_handler
577 add %sp, PTREGS_OFF, %o0
578 ba,a,pt %xcc, rtrap_irq
579 .size c_deferred,.-c_deferred
diff --git a/arch/sparc/kernel/chmc.c b/arch/sparc/kernel/chmc.c
new file mode 100644
index 000000000000..3b9f4d6e14a9
--- /dev/null
+++ b/arch/sparc/kernel/chmc.c
@@ -0,0 +1,863 @@
1/* chmc.c: Driver for UltraSPARC-III memory controller.
2 *
3 * Copyright (C) 2001, 2007, 2008 David S. Miller (davem@davemloft.net)
4 */
5
6#include <linux/module.h>
7#include <linux/kernel.h>
8#include <linux/types.h>
9#include <linux/slab.h>
10#include <linux/list.h>
11#include <linux/string.h>
12#include <linux/sched.h>
13#include <linux/smp.h>
14#include <linux/errno.h>
15#include <linux/init.h>
16#include <linux/of.h>
17#include <linux/of_device.h>
18#include <asm/spitfire.h>
19#include <asm/chmctrl.h>
20#include <asm/cpudata.h>
21#include <asm/oplib.h>
22#include <asm/prom.h>
23#include <asm/head.h>
24#include <asm/io.h>
25#include <asm/memctrl.h>
26
27#define DRV_MODULE_NAME "chmc"
28#define PFX DRV_MODULE_NAME ": "
29#define DRV_MODULE_VERSION "0.2"
30
31MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
32MODULE_DESCRIPTION("UltraSPARC-III memory controller driver");
33MODULE_LICENSE("GPL");
34MODULE_VERSION(DRV_MODULE_VERSION);
35
36static int mc_type;
37#define MC_TYPE_SAFARI 1
38#define MC_TYPE_JBUS 2
39
40static dimm_printer_t us3mc_dimm_printer;
41
42#define CHMCTRL_NDGRPS 2
43#define CHMCTRL_NDIMMS 4
44
45#define CHMC_DIMMS_PER_MC (CHMCTRL_NDGRPS * CHMCTRL_NDIMMS)
46
47/* OBP memory-layout property format. */
48struct chmc_obp_map {
49 unsigned char dimm_map[144];
50 unsigned char pin_map[576];
51};
52
53#define DIMM_LABEL_SZ 8
54
55struct chmc_obp_mem_layout {
56 /* One max 8-byte string label per DIMM. Usually
57 * this matches the label on the motherboard where
58 * that DIMM resides.
59 */
60 char dimm_labels[CHMC_DIMMS_PER_MC][DIMM_LABEL_SZ];
61
62 /* If symmetric use map[0], else it is
63 * asymmetric and map[1] should be used.
64 */
65 char symmetric;
66
67 struct chmc_obp_map map[2];
68};
69
70#define CHMCTRL_NBANKS 4
71
72struct chmc_bank_info {
73 struct chmc *p;
74 int bank_id;
75
76 u64 raw_reg;
77 int valid;
78 int uk;
79 int um;
80 int lk;
81 int lm;
82 int interleave;
83 unsigned long base;
84 unsigned long size;
85};
86
87struct chmc {
88 struct list_head list;
89 int portid;
90
91 struct chmc_obp_mem_layout layout_prop;
92 int layout_size;
93
94 void __iomem *regs;
95
96 u64 timing_control1;
97 u64 timing_control2;
98 u64 timing_control3;
99 u64 timing_control4;
100 u64 memaddr_control;
101
102 struct chmc_bank_info logical_banks[CHMCTRL_NBANKS];
103};
104
105#define JBUSMC_REGS_SIZE 8
106
107#define JB_MC_REG1_DIMM2_BANK3 0x8000000000000000UL
108#define JB_MC_REG1_DIMM1_BANK1 0x4000000000000000UL
109#define JB_MC_REG1_DIMM2_BANK2 0x2000000000000000UL
110#define JB_MC_REG1_DIMM1_BANK0 0x1000000000000000UL
111#define JB_MC_REG1_XOR 0x0000010000000000UL
112#define JB_MC_REG1_ADDR_GEN_2 0x000000e000000000UL
113#define JB_MC_REG1_ADDR_GEN_2_SHIFT 37
114#define JB_MC_REG1_ADDR_GEN_1 0x0000001c00000000UL
115#define JB_MC_REG1_ADDR_GEN_1_SHIFT 34
116#define JB_MC_REG1_INTERLEAVE 0x0000000001800000UL
117#define JB_MC_REG1_INTERLEAVE_SHIFT 23
118#define JB_MC_REG1_DIMM2_PTYPE 0x0000000000200000UL
119#define JB_MC_REG1_DIMM2_PTYPE_SHIFT 21
120#define JB_MC_REG1_DIMM1_PTYPE 0x0000000000100000UL
121#define JB_MC_REG1_DIMM1_PTYPE_SHIFT 20
122
123#define PART_TYPE_X8 0
124#define PART_TYPE_X4 1
125
126#define INTERLEAVE_NONE 0
127#define INTERLEAVE_SAME 1
128#define INTERLEAVE_INTERNAL 2
129#define INTERLEAVE_BOTH 3
130
131#define ADDR_GEN_128MB 0
132#define ADDR_GEN_256MB 1
133#define ADDR_GEN_512MB 2
134#define ADDR_GEN_1GB 3
135
136#define JB_NUM_DIMM_GROUPS 2
137#define JB_NUM_DIMMS_PER_GROUP 2
138#define JB_NUM_DIMMS (JB_NUM_DIMM_GROUPS * JB_NUM_DIMMS_PER_GROUP)
139
140struct jbusmc_obp_map {
141 unsigned char dimm_map[18];
142 unsigned char pin_map[144];
143};
144
145struct jbusmc_obp_mem_layout {
146 /* One max 8-byte string label per DIMM. Usually
147 * this matches the label on the motherboard where
148 * that DIMM resides.
149 */
150 char dimm_labels[JB_NUM_DIMMS][DIMM_LABEL_SZ];
151
152 /* If symmetric use map[0], else it is
153 * asymmetric and map[1] should be used.
154 */
155 char symmetric;
156
157 struct jbusmc_obp_map map;
158
159 char _pad;
160};
161
162struct jbusmc_dimm_group {
163 struct jbusmc *controller;
164 int index;
165 u64 base_addr;
166 u64 size;
167};
168
169struct jbusmc {
170 void __iomem *regs;
171 u64 mc_reg_1;
172 u32 portid;
173 struct jbusmc_obp_mem_layout layout;
174 int layout_len;
175 int num_dimm_groups;
176 struct jbusmc_dimm_group dimm_groups[JB_NUM_DIMM_GROUPS];
177 struct list_head list;
178};
179
180static DEFINE_SPINLOCK(mctrl_list_lock);
181static LIST_HEAD(mctrl_list);
182
183static void mc_list_add(struct list_head *list)
184{
185 spin_lock(&mctrl_list_lock);
186 list_add(list, &mctrl_list);
187 spin_unlock(&mctrl_list_lock);
188}
189
190static void mc_list_del(struct list_head *list)
191{
192 spin_lock(&mctrl_list_lock);
193 list_del_init(list);
194 spin_unlock(&mctrl_list_lock);
195}
196
197#define SYNDROME_MIN -1
198#define SYNDROME_MAX 144
199
200/* Covert syndrome code into the way the bits are positioned
201 * on the bus.
202 */
203static int syndrome_to_qword_code(int syndrome_code)
204{
205 if (syndrome_code < 128)
206 syndrome_code += 16;
207 else if (syndrome_code < 128 + 9)
208 syndrome_code -= (128 - 7);
209 else if (syndrome_code < (128 + 9 + 3))
210 syndrome_code -= (128 + 9 - 4);
211 else
212 syndrome_code -= (128 + 9 + 3);
213 return syndrome_code;
214}
215
216/* All this magic has to do with how a cache line comes over the wire
217 * on Safari and JBUS. A 64-bit line comes over in 1 or more quadword
218 * cycles, each of which transmit ECC/MTAG info as well as the actual
219 * data.
220 */
221#define L2_LINE_SIZE 64
222#define L2_LINE_ADDR_MSK (L2_LINE_SIZE - 1)
223#define QW_PER_LINE 4
224#define QW_BYTES (L2_LINE_SIZE / QW_PER_LINE)
225#define QW_BITS 144
226#define SAFARI_LAST_BIT (576 - 1)
227#define JBUS_LAST_BIT (144 - 1)
228
229static void get_pin_and_dimm_str(int syndrome_code, unsigned long paddr,
230 int *pin_p, char **dimm_str_p, void *_prop,
231 int base_dimm_offset)
232{
233 int qword_code = syndrome_to_qword_code(syndrome_code);
234 int cache_line_offset;
235 int offset_inverse;
236 int dimm_map_index;
237 int map_val;
238
239 if (mc_type == MC_TYPE_JBUS) {
240 struct jbusmc_obp_mem_layout *p = _prop;
241
242 /* JBUS */
243 cache_line_offset = qword_code;
244 offset_inverse = (JBUS_LAST_BIT - cache_line_offset);
245 dimm_map_index = offset_inverse / 8;
246 map_val = p->map.dimm_map[dimm_map_index];
247 map_val = ((map_val >> ((7 - (offset_inverse & 7)))) & 1);
248 *dimm_str_p = p->dimm_labels[base_dimm_offset + map_val];
249 *pin_p = p->map.pin_map[cache_line_offset];
250 } else {
251 struct chmc_obp_mem_layout *p = _prop;
252 struct chmc_obp_map *mp;
253 int qword;
254
255 /* Safari */
256 if (p->symmetric)
257 mp = &p->map[0];
258 else
259 mp = &p->map[1];
260
261 qword = (paddr & L2_LINE_ADDR_MSK) / QW_BYTES;
262 cache_line_offset = ((3 - qword) * QW_BITS) + qword_code;
263 offset_inverse = (SAFARI_LAST_BIT - cache_line_offset);
264 dimm_map_index = offset_inverse >> 2;
265 map_val = mp->dimm_map[dimm_map_index];
266 map_val = ((map_val >> ((3 - (offset_inverse & 3)) << 1)) & 0x3);
267 *dimm_str_p = p->dimm_labels[base_dimm_offset + map_val];
268 *pin_p = mp->pin_map[cache_line_offset];
269 }
270}
271
272static struct jbusmc_dimm_group *jbusmc_find_dimm_group(unsigned long phys_addr)
273{
274 struct jbusmc *p;
275
276 list_for_each_entry(p, &mctrl_list, list) {
277 int i;
278
279 for (i = 0; i < p->num_dimm_groups; i++) {
280 struct jbusmc_dimm_group *dp = &p->dimm_groups[i];
281
282 if (phys_addr < dp->base_addr ||
283 (dp->base_addr + dp->size) <= phys_addr)
284 continue;
285
286 return dp;
287 }
288 }
289 return NULL;
290}
291
292static int jbusmc_print_dimm(int syndrome_code,
293 unsigned long phys_addr,
294 char *buf, int buflen)
295{
296 struct jbusmc_obp_mem_layout *prop;
297 struct jbusmc_dimm_group *dp;
298 struct jbusmc *p;
299 int first_dimm;
300
301 dp = jbusmc_find_dimm_group(phys_addr);
302 if (dp == NULL ||
303 syndrome_code < SYNDROME_MIN ||
304 syndrome_code > SYNDROME_MAX) {
305 buf[0] = '?';
306 buf[1] = '?';
307 buf[2] = '?';
308 buf[3] = '\0';
309 }
310 p = dp->controller;
311 prop = &p->layout;
312
313 first_dimm = dp->index * JB_NUM_DIMMS_PER_GROUP;
314
315 if (syndrome_code != SYNDROME_MIN) {
316 char *dimm_str;
317 int pin;
318
319 get_pin_and_dimm_str(syndrome_code, phys_addr, &pin,
320 &dimm_str, prop, first_dimm);
321 sprintf(buf, "%s, pin %3d", dimm_str, pin);
322 } else {
323 int dimm;
324
325 /* Multi-bit error, we just dump out all the
326 * dimm labels associated with this dimm group.
327 */
328 for (dimm = 0; dimm < JB_NUM_DIMMS_PER_GROUP; dimm++) {
329 sprintf(buf, "%s ",
330 prop->dimm_labels[first_dimm + dimm]);
331 buf += strlen(buf);
332 }
333 }
334
335 return 0;
336}
337
338static u64 __devinit jbusmc_dimm_group_size(u64 base,
339 const struct linux_prom64_registers *mem_regs,
340 int num_mem_regs)
341{
342 u64 max = base + (8UL * 1024 * 1024 * 1024);
343 u64 max_seen = base;
344 int i;
345
346 for (i = 0; i < num_mem_regs; i++) {
347 const struct linux_prom64_registers *ent;
348 u64 this_base;
349 u64 this_end;
350
351 ent = &mem_regs[i];
352 this_base = ent->phys_addr;
353 this_end = this_base + ent->reg_size;
354 if (base < this_base || base >= this_end)
355 continue;
356 if (this_end > max)
357 this_end = max;
358 if (this_end > max_seen)
359 max_seen = this_end;
360 }
361
362 return max_seen - base;
363}
364
365static void __devinit jbusmc_construct_one_dimm_group(struct jbusmc *p,
366 unsigned long index,
367 const struct linux_prom64_registers *mem_regs,
368 int num_mem_regs)
369{
370 struct jbusmc_dimm_group *dp = &p->dimm_groups[index];
371
372 dp->controller = p;
373 dp->index = index;
374
375 dp->base_addr = (p->portid * (64UL * 1024 * 1024 * 1024));
376 dp->base_addr += (index * (8UL * 1024 * 1024 * 1024));
377 dp->size = jbusmc_dimm_group_size(dp->base_addr, mem_regs, num_mem_regs);
378}
379
380static void __devinit jbusmc_construct_dimm_groups(struct jbusmc *p,
381 const struct linux_prom64_registers *mem_regs,
382 int num_mem_regs)
383{
384 if (p->mc_reg_1 & JB_MC_REG1_DIMM1_BANK0) {
385 jbusmc_construct_one_dimm_group(p, 0, mem_regs, num_mem_regs);
386 p->num_dimm_groups++;
387 }
388 if (p->mc_reg_1 & JB_MC_REG1_DIMM2_BANK2) {
389 jbusmc_construct_one_dimm_group(p, 1, mem_regs, num_mem_regs);
390 p->num_dimm_groups++;
391 }
392}
393
394static int __devinit jbusmc_probe(struct of_device *op,
395 const struct of_device_id *match)
396{
397 const struct linux_prom64_registers *mem_regs;
398 struct device_node *mem_node;
399 int err, len, num_mem_regs;
400 struct jbusmc *p;
401 const u32 *prop;
402 const void *ml;
403
404 err = -ENODEV;
405 mem_node = of_find_node_by_path("/memory");
406 if (!mem_node) {
407 printk(KERN_ERR PFX "Cannot find /memory node.\n");
408 goto out;
409 }
410 mem_regs = of_get_property(mem_node, "reg", &len);
411 if (!mem_regs) {
412 printk(KERN_ERR PFX "Cannot get reg property of /memory node.\n");
413 goto out;
414 }
415 num_mem_regs = len / sizeof(*mem_regs);
416
417 err = -ENOMEM;
418 p = kzalloc(sizeof(*p), GFP_KERNEL);
419 if (!p) {
420 printk(KERN_ERR PFX "Cannot allocate struct jbusmc.\n");
421 goto out;
422 }
423
424 INIT_LIST_HEAD(&p->list);
425
426 err = -ENODEV;
427 prop = of_get_property(op->node, "portid", &len);
428 if (!prop || len != 4) {
429 printk(KERN_ERR PFX "Cannot find portid.\n");
430 goto out_free;
431 }
432
433 p->portid = *prop;
434
435 prop = of_get_property(op->node, "memory-control-register-1", &len);
436 if (!prop || len != 8) {
437 printk(KERN_ERR PFX "Cannot get memory control register 1.\n");
438 goto out_free;
439 }
440
441 p->mc_reg_1 = ((u64)prop[0] << 32) | (u64) prop[1];
442
443 err = -ENOMEM;
444 p->regs = of_ioremap(&op->resource[0], 0, JBUSMC_REGS_SIZE, "jbusmc");
445 if (!p->regs) {
446 printk(KERN_ERR PFX "Cannot map jbusmc regs.\n");
447 goto out_free;
448 }
449
450 err = -ENODEV;
451 ml = of_get_property(op->node, "memory-layout", &p->layout_len);
452 if (!ml) {
453 printk(KERN_ERR PFX "Cannot get memory layout property.\n");
454 goto out_iounmap;
455 }
456 if (p->layout_len > sizeof(p->layout)) {
457 printk(KERN_ERR PFX "Unexpected memory-layout size %d\n",
458 p->layout_len);
459 goto out_iounmap;
460 }
461 memcpy(&p->layout, ml, p->layout_len);
462
463 jbusmc_construct_dimm_groups(p, mem_regs, num_mem_regs);
464
465 mc_list_add(&p->list);
466
467 printk(KERN_INFO PFX "UltraSPARC-IIIi memory controller at %s\n",
468 op->node->full_name);
469
470 dev_set_drvdata(&op->dev, p);
471
472 err = 0;
473
474out:
475 return err;
476
477out_iounmap:
478 of_iounmap(&op->resource[0], p->regs, JBUSMC_REGS_SIZE);
479
480out_free:
481 kfree(p);
482 goto out;
483}
484
485/* Does BANK decode PHYS_ADDR? */
486static int chmc_bank_match(struct chmc_bank_info *bp, unsigned long phys_addr)
487{
488 unsigned long upper_bits = (phys_addr & PA_UPPER_BITS) >> PA_UPPER_BITS_SHIFT;
489 unsigned long lower_bits = (phys_addr & PA_LOWER_BITS) >> PA_LOWER_BITS_SHIFT;
490
491 /* Bank must be enabled to match. */
492 if (bp->valid == 0)
493 return 0;
494
495 /* Would BANK match upper bits? */
496 upper_bits ^= bp->um; /* What bits are different? */
497 upper_bits = ~upper_bits; /* Invert. */
498 upper_bits |= bp->uk; /* What bits don't matter for matching? */
499 upper_bits = ~upper_bits; /* Invert. */
500
501 if (upper_bits)
502 return 0;
503
504 /* Would BANK match lower bits? */
505 lower_bits ^= bp->lm; /* What bits are different? */
506 lower_bits = ~lower_bits; /* Invert. */
507 lower_bits |= bp->lk; /* What bits don't matter for matching? */
508 lower_bits = ~lower_bits; /* Invert. */
509
510 if (lower_bits)
511 return 0;
512
513 /* I always knew you'd be the one. */
514 return 1;
515}
516
517/* Given PHYS_ADDR, search memory controller banks for a match. */
518static struct chmc_bank_info *chmc_find_bank(unsigned long phys_addr)
519{
520 struct chmc *p;
521
522 list_for_each_entry(p, &mctrl_list, list) {
523 int bank_no;
524
525 for (bank_no = 0; bank_no < CHMCTRL_NBANKS; bank_no++) {
526 struct chmc_bank_info *bp;
527
528 bp = &p->logical_banks[bank_no];
529 if (chmc_bank_match(bp, phys_addr))
530 return bp;
531 }
532 }
533
534 return NULL;
535}
536
537/* This is the main purpose of this driver. */
538static int chmc_print_dimm(int syndrome_code,
539 unsigned long phys_addr,
540 char *buf, int buflen)
541{
542 struct chmc_bank_info *bp;
543 struct chmc_obp_mem_layout *prop;
544 int bank_in_controller, first_dimm;
545
546 bp = chmc_find_bank(phys_addr);
547 if (bp == NULL ||
548 syndrome_code < SYNDROME_MIN ||
549 syndrome_code > SYNDROME_MAX) {
550 buf[0] = '?';
551 buf[1] = '?';
552 buf[2] = '?';
553 buf[3] = '\0';
554 return 0;
555 }
556
557 prop = &bp->p->layout_prop;
558 bank_in_controller = bp->bank_id & (CHMCTRL_NBANKS - 1);
559 first_dimm = (bank_in_controller & (CHMCTRL_NDGRPS - 1));
560 first_dimm *= CHMCTRL_NDIMMS;
561
562 if (syndrome_code != SYNDROME_MIN) {
563 char *dimm_str;
564 int pin;
565
566 get_pin_and_dimm_str(syndrome_code, phys_addr, &pin,
567 &dimm_str, prop, first_dimm);
568 sprintf(buf, "%s, pin %3d", dimm_str, pin);
569 } else {
570 int dimm;
571
572 /* Multi-bit error, we just dump out all the
573 * dimm labels associated with this bank.
574 */
575 for (dimm = 0; dimm < CHMCTRL_NDIMMS; dimm++) {
576 sprintf(buf, "%s ",
577 prop->dimm_labels[first_dimm + dimm]);
578 buf += strlen(buf);
579 }
580 }
581 return 0;
582}
583
584/* Accessing the registers is slightly complicated. If you want
585 * to get at the memory controller which is on the same processor
586 * the code is executing, you must use special ASI load/store else
587 * you go through the global mapping.
588 */
589static u64 chmc_read_mcreg(struct chmc *p, unsigned long offset)
590{
591 unsigned long ret, this_cpu;
592
593 preempt_disable();
594
595 this_cpu = real_hard_smp_processor_id();
596
597 if (p->portid == this_cpu) {
598 __asm__ __volatile__("ldxa [%1] %2, %0"
599 : "=r" (ret)
600 : "r" (offset), "i" (ASI_MCU_CTRL_REG));
601 } else {
602 __asm__ __volatile__("ldxa [%1] %2, %0"
603 : "=r" (ret)
604 : "r" (p->regs + offset),
605 "i" (ASI_PHYS_BYPASS_EC_E));
606 }
607
608 preempt_enable();
609
610 return ret;
611}
612
613#if 0 /* currently unused */
614static void chmc_write_mcreg(struct chmc *p, unsigned long offset, u64 val)
615{
616 if (p->portid == smp_processor_id()) {
617 __asm__ __volatile__("stxa %0, [%1] %2"
618 : : "r" (val),
619 "r" (offset), "i" (ASI_MCU_CTRL_REG));
620 } else {
621 __asm__ __volatile__("ldxa %0, [%1] %2"
622 : : "r" (val),
623 "r" (p->regs + offset),
624 "i" (ASI_PHYS_BYPASS_EC_E));
625 }
626}
627#endif
628
629static void chmc_interpret_one_decode_reg(struct chmc *p, int which_bank, u64 val)
630{
631 struct chmc_bank_info *bp = &p->logical_banks[which_bank];
632
633 bp->p = p;
634 bp->bank_id = (CHMCTRL_NBANKS * p->portid) + which_bank;
635 bp->raw_reg = val;
636 bp->valid = (val & MEM_DECODE_VALID) >> MEM_DECODE_VALID_SHIFT;
637 bp->uk = (val & MEM_DECODE_UK) >> MEM_DECODE_UK_SHIFT;
638 bp->um = (val & MEM_DECODE_UM) >> MEM_DECODE_UM_SHIFT;
639 bp->lk = (val & MEM_DECODE_LK) >> MEM_DECODE_LK_SHIFT;
640 bp->lm = (val & MEM_DECODE_LM) >> MEM_DECODE_LM_SHIFT;
641
642 bp->base = (bp->um);
643 bp->base &= ~(bp->uk);
644 bp->base <<= PA_UPPER_BITS_SHIFT;
645
646 switch(bp->lk) {
647 case 0xf:
648 default:
649 bp->interleave = 1;
650 break;
651
652 case 0xe:
653 bp->interleave = 2;
654 break;
655
656 case 0xc:
657 bp->interleave = 4;
658 break;
659
660 case 0x8:
661 bp->interleave = 8;
662 break;
663
664 case 0x0:
665 bp->interleave = 16;
666 break;
667 };
668
669 /* UK[10] is reserved, and UK[11] is not set for the SDRAM
670 * bank size definition.
671 */
672 bp->size = (((unsigned long)bp->uk &
673 ((1UL << 10UL) - 1UL)) + 1UL) << PA_UPPER_BITS_SHIFT;
674 bp->size /= bp->interleave;
675}
676
677static void chmc_fetch_decode_regs(struct chmc *p)
678{
679 if (p->layout_size == 0)
680 return;
681
682 chmc_interpret_one_decode_reg(p, 0,
683 chmc_read_mcreg(p, CHMCTRL_DECODE1));
684 chmc_interpret_one_decode_reg(p, 1,
685 chmc_read_mcreg(p, CHMCTRL_DECODE2));
686 chmc_interpret_one_decode_reg(p, 2,
687 chmc_read_mcreg(p, CHMCTRL_DECODE3));
688 chmc_interpret_one_decode_reg(p, 3,
689 chmc_read_mcreg(p, CHMCTRL_DECODE4));
690}
691
692static int __devinit chmc_probe(struct of_device *op,
693 const struct of_device_id *match)
694{
695 struct device_node *dp = op->node;
696 unsigned long ver;
697 const void *pval;
698 int len, portid;
699 struct chmc *p;
700 int err;
701
702 err = -ENODEV;
703 __asm__ ("rdpr %%ver, %0" : "=r" (ver));
704 if ((ver >> 32UL) == __JALAPENO_ID ||
705 (ver >> 32UL) == __SERRANO_ID)
706 goto out;
707
708 portid = of_getintprop_default(dp, "portid", -1);
709 if (portid == -1)
710 goto out;
711
712 pval = of_get_property(dp, "memory-layout", &len);
713 if (pval && len > sizeof(p->layout_prop)) {
714 printk(KERN_ERR PFX "Unexpected memory-layout property "
715 "size %d.\n", len);
716 goto out;
717 }
718
719 err = -ENOMEM;
720 p = kzalloc(sizeof(*p), GFP_KERNEL);
721 if (!p) {
722 printk(KERN_ERR PFX "Could not allocate struct chmc.\n");
723 goto out;
724 }
725
726 p->portid = portid;
727 p->layout_size = len;
728 if (!pval)
729 p->layout_size = 0;
730 else
731 memcpy(&p->layout_prop, pval, len);
732
733 p->regs = of_ioremap(&op->resource[0], 0, 0x48, "chmc");
734 if (!p->regs) {
735 printk(KERN_ERR PFX "Could not map registers.\n");
736 goto out_free;
737 }
738
739 if (p->layout_size != 0UL) {
740 p->timing_control1 = chmc_read_mcreg(p, CHMCTRL_TCTRL1);
741 p->timing_control2 = chmc_read_mcreg(p, CHMCTRL_TCTRL2);
742 p->timing_control3 = chmc_read_mcreg(p, CHMCTRL_TCTRL3);
743 p->timing_control4 = chmc_read_mcreg(p, CHMCTRL_TCTRL4);
744 p->memaddr_control = chmc_read_mcreg(p, CHMCTRL_MACTRL);
745 }
746
747 chmc_fetch_decode_regs(p);
748
749 mc_list_add(&p->list);
750
751 printk(KERN_INFO PFX "UltraSPARC-III memory controller at %s [%s]\n",
752 dp->full_name,
753 (p->layout_size ? "ACTIVE" : "INACTIVE"));
754
755 dev_set_drvdata(&op->dev, p);
756
757 err = 0;
758
759out:
760 return err;
761
762out_free:
763 kfree(p);
764 goto out;
765}
766
767static int __devinit us3mc_probe(struct of_device *op,
768 const struct of_device_id *match)
769{
770 if (mc_type == MC_TYPE_SAFARI)
771 return chmc_probe(op, match);
772 else if (mc_type == MC_TYPE_JBUS)
773 return jbusmc_probe(op, match);
774 return -ENODEV;
775}
776
777static void __devexit chmc_destroy(struct of_device *op, struct chmc *p)
778{
779 list_del(&p->list);
780 of_iounmap(&op->resource[0], p->regs, 0x48);
781 kfree(p);
782}
783
784static void __devexit jbusmc_destroy(struct of_device *op, struct jbusmc *p)
785{
786 mc_list_del(&p->list);
787 of_iounmap(&op->resource[0], p->regs, JBUSMC_REGS_SIZE);
788 kfree(p);
789}
790
791static int __devexit us3mc_remove(struct of_device *op)
792{
793 void *p = dev_get_drvdata(&op->dev);
794
795 if (p) {
796 if (mc_type == MC_TYPE_SAFARI)
797 chmc_destroy(op, p);
798 else if (mc_type == MC_TYPE_JBUS)
799 jbusmc_destroy(op, p);
800 }
801 return 0;
802}
803
804static const struct of_device_id us3mc_match[] = {
805 {
806 .name = "memory-controller",
807 },
808 {},
809};
810MODULE_DEVICE_TABLE(of, us3mc_match);
811
812static struct of_platform_driver us3mc_driver = {
813 .name = "us3mc",
814 .match_table = us3mc_match,
815 .probe = us3mc_probe,
816 .remove = __devexit_p(us3mc_remove),
817};
818
819static inline bool us3mc_platform(void)
820{
821 if (tlb_type == cheetah || tlb_type == cheetah_plus)
822 return true;
823 return false;
824}
825
826static int __init us3mc_init(void)
827{
828 unsigned long ver;
829 int ret;
830
831 if (!us3mc_platform())
832 return -ENODEV;
833
834 __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
835 if ((ver >> 32UL) == __JALAPENO_ID ||
836 (ver >> 32UL) == __SERRANO_ID) {
837 mc_type = MC_TYPE_JBUS;
838 us3mc_dimm_printer = jbusmc_print_dimm;
839 } else {
840 mc_type = MC_TYPE_SAFARI;
841 us3mc_dimm_printer = chmc_print_dimm;
842 }
843
844 ret = register_dimm_printer(us3mc_dimm_printer);
845
846 if (!ret) {
847 ret = of_register_driver(&us3mc_driver, &of_bus_type);
848 if (ret)
849 unregister_dimm_printer(us3mc_dimm_printer);
850 }
851 return ret;
852}
853
854static void __exit us3mc_cleanup(void)
855{
856 if (us3mc_platform()) {
857 unregister_dimm_printer(us3mc_dimm_printer);
858 of_unregister_driver(&us3mc_driver);
859 }
860}
861
862module_init(us3mc_init);
863module_exit(us3mc_cleanup);
diff --git a/arch/sparc/kernel/compat_audit.c b/arch/sparc/kernel/compat_audit.c
new file mode 100644
index 000000000000..d865575b25bf
--- /dev/null
+++ b/arch/sparc/kernel/compat_audit.c
@@ -0,0 +1,43 @@
1#define __32bit_syscall_numbers__
2#include <asm/unistd.h>
3
4unsigned sparc32_dir_class[] = {
5#include <asm-generic/audit_dir_write.h>
6~0U
7};
8
9unsigned sparc32_chattr_class[] = {
10#include <asm-generic/audit_change_attr.h>
11~0U
12};
13
14unsigned sparc32_write_class[] = {
15#include <asm-generic/audit_write.h>
16~0U
17};
18
19unsigned sparc32_read_class[] = {
20#include <asm-generic/audit_read.h>
21~0U
22};
23
24unsigned sparc32_signal_class[] = {
25#include <asm-generic/audit_signal.h>
26~0U
27};
28
29int sparc32_classify_syscall(unsigned syscall)
30{
31 switch(syscall) {
32 case __NR_open:
33 return 2;
34 case __NR_openat:
35 return 3;
36 case __NR_socketcall:
37 return 4;
38 case __NR_execve:
39 return 5;
40 default:
41 return 1;
42 }
43}
diff --git a/arch/sparc/kernel/cpu_64.c b/arch/sparc/kernel/cpu_64.c
new file mode 100644
index 000000000000..0c9ac83ed0a8
--- /dev/null
+++ b/arch/sparc/kernel/cpu_64.c
@@ -0,0 +1,166 @@
1/* cpu.c: Dinky routines to look for the kind of Sparc cpu
2 * we are on.
3 *
4 * Copyright (C) 1996, 2007, 2008 David S. Miller (davem@davemloft.net)
5 */
6
7#include <linux/kernel.h>
8#include <linux/init.h>
9#include <linux/sched.h>
10#include <linux/smp.h>
11#include <asm/asi.h>
12#include <asm/system.h>
13#include <asm/fpumacro.h>
14#include <asm/cpudata.h>
15#include <asm/spitfire.h>
16#include <asm/oplib.h>
17
18#include "entry.h"
19
20DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 };
21
22struct cpu_chip_info {
23 unsigned short manuf;
24 unsigned short impl;
25 const char *cpu_name;
26 const char *fp_name;
27};
28
29static const struct cpu_chip_info cpu_chips[] = {
30 {
31 .manuf = 0x17,
32 .impl = 0x10,
33 .cpu_name = "TI UltraSparc I (SpitFire)",
34 .fp_name = "UltraSparc I integrated FPU",
35 },
36 {
37 .manuf = 0x22,
38 .impl = 0x10,
39 .cpu_name = "TI UltraSparc I (SpitFire)",
40 .fp_name = "UltraSparc I integrated FPU",
41 },
42 {
43 .manuf = 0x17,
44 .impl = 0x11,
45 .cpu_name = "TI UltraSparc II (BlackBird)",
46 .fp_name = "UltraSparc II integrated FPU",
47 },
48 {
49 .manuf = 0x17,
50 .impl = 0x12,
51 .cpu_name = "TI UltraSparc IIi (Sabre)",
52 .fp_name = "UltraSparc IIi integrated FPU",
53 },
54 {
55 .manuf = 0x17,
56 .impl = 0x13,
57 .cpu_name = "TI UltraSparc IIe (Hummingbird)",
58 .fp_name = "UltraSparc IIe integrated FPU",
59 },
60 {
61 .manuf = 0x3e,
62 .impl = 0x14,
63 .cpu_name = "TI UltraSparc III (Cheetah)",
64 .fp_name = "UltraSparc III integrated FPU",
65 },
66 {
67 .manuf = 0x3e,
68 .impl = 0x15,
69 .cpu_name = "TI UltraSparc III+ (Cheetah+)",
70 .fp_name = "UltraSparc III+ integrated FPU",
71 },
72 {
73 .manuf = 0x3e,
74 .impl = 0x16,
75 .cpu_name = "TI UltraSparc IIIi (Jalapeno)",
76 .fp_name = "UltraSparc IIIi integrated FPU",
77 },
78 {
79 .manuf = 0x3e,
80 .impl = 0x18,
81 .cpu_name = "TI UltraSparc IV (Jaguar)",
82 .fp_name = "UltraSparc IV integrated FPU",
83 },
84 {
85 .manuf = 0x3e,
86 .impl = 0x19,
87 .cpu_name = "TI UltraSparc IV+ (Panther)",
88 .fp_name = "UltraSparc IV+ integrated FPU",
89 },
90 {
91 .manuf = 0x3e,
92 .impl = 0x22,
93 .cpu_name = "TI UltraSparc IIIi+ (Serrano)",
94 .fp_name = "UltraSparc IIIi+ integrated FPU",
95 },
96};
97
98#define NSPARCCHIPS ARRAY_SIZE(linux_sparc_chips)
99
100const char *sparc_cpu_type;
101const char *sparc_fpu_type;
102
103static void __init sun4v_cpu_probe(void)
104{
105 switch (sun4v_chip_type) {
106 case SUN4V_CHIP_NIAGARA1:
107 sparc_cpu_type = "UltraSparc T1 (Niagara)";
108 sparc_fpu_type = "UltraSparc T1 integrated FPU";
109 break;
110
111 case SUN4V_CHIP_NIAGARA2:
112 sparc_cpu_type = "UltraSparc T2 (Niagara2)";
113 sparc_fpu_type = "UltraSparc T2 integrated FPU";
114 break;
115
116 default:
117 printk(KERN_WARNING "CPU: Unknown sun4v cpu type [%s]\n",
118 prom_cpu_compatible);
119 sparc_cpu_type = "Unknown SUN4V CPU";
120 sparc_fpu_type = "Unknown SUN4V FPU";
121 break;
122 }
123}
124
125static const struct cpu_chip_info * __init find_cpu_chip(unsigned short manuf,
126 unsigned short impl)
127{
128 int i;
129
130 for (i = 0; i < ARRAY_SIZE(cpu_chips); i++) {
131 const struct cpu_chip_info *p = &cpu_chips[i];
132
133 if (p->manuf == manuf && p->impl == impl)
134 return p;
135 }
136 return NULL;
137}
138
139static int __init cpu_type_probe(void)
140{
141 if (tlb_type == hypervisor) {
142 sun4v_cpu_probe();
143 } else {
144 unsigned long ver, manuf, impl;
145 const struct cpu_chip_info *p;
146
147 __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
148
149 manuf = ((ver >> 48) & 0xffff);
150 impl = ((ver >> 32) & 0xffff);
151
152 p = find_cpu_chip(manuf, impl);
153 if (p) {
154 sparc_cpu_type = p->cpu_name;
155 sparc_fpu_type = p->fp_name;
156 } else {
157 printk(KERN_ERR "CPU: Unknown chip, manuf[%lx] impl[%lx]\n",
158 manuf, impl);
159 sparc_cpu_type = "Unknown CPU";
160 sparc_fpu_type = "Unknown FPU";
161 }
162 }
163 return 0;
164}
165
166arch_initcall(cpu_type_probe);
diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c
new file mode 100644
index 000000000000..f52e0534d91d
--- /dev/null
+++ b/arch/sparc/kernel/ds.c
@@ -0,0 +1,1244 @@
1/* ds.c: Domain Services driver for Logical Domains
2 *
3 * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
4 */
5
6#include <linux/kernel.h>
7#include <linux/module.h>
8#include <linux/types.h>
9#include <linux/string.h>
10#include <linux/slab.h>
11#include <linux/sched.h>
12#include <linux/delay.h>
13#include <linux/mutex.h>
14#include <linux/kthread.h>
15#include <linux/reboot.h>
16#include <linux/cpu.h>
17
18#include <asm/ldc.h>
19#include <asm/vio.h>
20#include <asm/mdesc.h>
21#include <asm/head.h>
22#include <asm/irq.h>
23
24#define DRV_MODULE_NAME "ds"
25#define PFX DRV_MODULE_NAME ": "
26#define DRV_MODULE_VERSION "1.0"
27#define DRV_MODULE_RELDATE "Jul 11, 2007"
28
29static char version[] __devinitdata =
30 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
31MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
32MODULE_DESCRIPTION("Sun LDOM domain services driver");
33MODULE_LICENSE("GPL");
34MODULE_VERSION(DRV_MODULE_VERSION);
35
36struct ds_msg_tag {
37 __u32 type;
38#define DS_INIT_REQ 0x00
39#define DS_INIT_ACK 0x01
40#define DS_INIT_NACK 0x02
41#define DS_REG_REQ 0x03
42#define DS_REG_ACK 0x04
43#define DS_REG_NACK 0x05
44#define DS_UNREG_REQ 0x06
45#define DS_UNREG_ACK 0x07
46#define DS_UNREG_NACK 0x08
47#define DS_DATA 0x09
48#define DS_NACK 0x0a
49
50 __u32 len;
51};
52
53/* Result codes */
54#define DS_OK 0x00
55#define DS_REG_VER_NACK 0x01
56#define DS_REG_DUP 0x02
57#define DS_INV_HDL 0x03
58#define DS_TYPE_UNKNOWN 0x04
59
60struct ds_version {
61 __u16 major;
62 __u16 minor;
63};
64
65struct ds_ver_req {
66 struct ds_msg_tag tag;
67 struct ds_version ver;
68};
69
70struct ds_ver_ack {
71 struct ds_msg_tag tag;
72 __u16 minor;
73};
74
75struct ds_ver_nack {
76 struct ds_msg_tag tag;
77 __u16 major;
78};
79
80struct ds_reg_req {
81 struct ds_msg_tag tag;
82 __u64 handle;
83 __u16 major;
84 __u16 minor;
85 char svc_id[0];
86};
87
88struct ds_reg_ack {
89 struct ds_msg_tag tag;
90 __u64 handle;
91 __u16 minor;
92};
93
94struct ds_reg_nack {
95 struct ds_msg_tag tag;
96 __u64 handle;
97 __u16 major;
98};
99
100struct ds_unreg_req {
101 struct ds_msg_tag tag;
102 __u64 handle;
103};
104
105struct ds_unreg_ack {
106 struct ds_msg_tag tag;
107 __u64 handle;
108};
109
110struct ds_unreg_nack {
111 struct ds_msg_tag tag;
112 __u64 handle;
113};
114
115struct ds_data {
116 struct ds_msg_tag tag;
117 __u64 handle;
118};
119
120struct ds_data_nack {
121 struct ds_msg_tag tag;
122 __u64 handle;
123 __u64 result;
124};
125
126struct ds_info;
127struct ds_cap_state {
128 __u64 handle;
129
130 void (*data)(struct ds_info *dp,
131 struct ds_cap_state *cp,
132 void *buf, int len);
133
134 const char *service_id;
135
136 u8 state;
137#define CAP_STATE_UNKNOWN 0x00
138#define CAP_STATE_REG_SENT 0x01
139#define CAP_STATE_REGISTERED 0x02
140};
141
142static void md_update_data(struct ds_info *dp, struct ds_cap_state *cp,
143 void *buf, int len);
144static void domain_shutdown_data(struct ds_info *dp,
145 struct ds_cap_state *cp,
146 void *buf, int len);
147static void domain_panic_data(struct ds_info *dp,
148 struct ds_cap_state *cp,
149 void *buf, int len);
150#ifdef CONFIG_HOTPLUG_CPU
151static void dr_cpu_data(struct ds_info *dp,
152 struct ds_cap_state *cp,
153 void *buf, int len);
154#endif
155static void ds_pri_data(struct ds_info *dp,
156 struct ds_cap_state *cp,
157 void *buf, int len);
158static void ds_var_data(struct ds_info *dp,
159 struct ds_cap_state *cp,
160 void *buf, int len);
161
162static struct ds_cap_state ds_states_template[] = {
163 {
164 .service_id = "md-update",
165 .data = md_update_data,
166 },
167 {
168 .service_id = "domain-shutdown",
169 .data = domain_shutdown_data,
170 },
171 {
172 .service_id = "domain-panic",
173 .data = domain_panic_data,
174 },
175#ifdef CONFIG_HOTPLUG_CPU
176 {
177 .service_id = "dr-cpu",
178 .data = dr_cpu_data,
179 },
180#endif
181 {
182 .service_id = "pri",
183 .data = ds_pri_data,
184 },
185 {
186 .service_id = "var-config",
187 .data = ds_var_data,
188 },
189 {
190 .service_id = "var-config-backup",
191 .data = ds_var_data,
192 },
193};
194
195static DEFINE_SPINLOCK(ds_lock);
196
197struct ds_info {
198 struct ldc_channel *lp;
199 u8 hs_state;
200#define DS_HS_START 0x01
201#define DS_HS_DONE 0x02
202
203 u64 id;
204
205 void *rcv_buf;
206 int rcv_buf_len;
207
208 struct ds_cap_state *ds_states;
209 int num_ds_states;
210
211 struct ds_info *next;
212};
213
214static struct ds_info *ds_info_list;
215
216static struct ds_cap_state *find_cap(struct ds_info *dp, u64 handle)
217{
218 unsigned int index = handle >> 32;
219
220 if (index >= dp->num_ds_states)
221 return NULL;
222 return &dp->ds_states[index];
223}
224
225static struct ds_cap_state *find_cap_by_string(struct ds_info *dp,
226 const char *name)
227{
228 int i;
229
230 for (i = 0; i < dp->num_ds_states; i++) {
231 if (strcmp(dp->ds_states[i].service_id, name))
232 continue;
233
234 return &dp->ds_states[i];
235 }
236 return NULL;
237}
238
239static int __ds_send(struct ldc_channel *lp, void *data, int len)
240{
241 int err, limit = 1000;
242
243 err = -EINVAL;
244 while (limit-- > 0) {
245 err = ldc_write(lp, data, len);
246 if (!err || (err != -EAGAIN))
247 break;
248 udelay(1);
249 }
250
251 return err;
252}
253
254static int ds_send(struct ldc_channel *lp, void *data, int len)
255{
256 unsigned long flags;
257 int err;
258
259 spin_lock_irqsave(&ds_lock, flags);
260 err = __ds_send(lp, data, len);
261 spin_unlock_irqrestore(&ds_lock, flags);
262
263 return err;
264}
265
266struct ds_md_update_req {
267 __u64 req_num;
268};
269
270struct ds_md_update_res {
271 __u64 req_num;
272 __u32 result;
273};
274
275static void md_update_data(struct ds_info *dp,
276 struct ds_cap_state *cp,
277 void *buf, int len)
278{
279 struct ldc_channel *lp = dp->lp;
280 struct ds_data *dpkt = buf;
281 struct ds_md_update_req *rp;
282 struct {
283 struct ds_data data;
284 struct ds_md_update_res res;
285 } pkt;
286
287 rp = (struct ds_md_update_req *) (dpkt + 1);
288
289 printk(KERN_INFO "ds-%lu: Machine description update.\n", dp->id);
290
291 mdesc_update();
292
293 memset(&pkt, 0, sizeof(pkt));
294 pkt.data.tag.type = DS_DATA;
295 pkt.data.tag.len = sizeof(pkt) - sizeof(struct ds_msg_tag);
296 pkt.data.handle = cp->handle;
297 pkt.res.req_num = rp->req_num;
298 pkt.res.result = DS_OK;
299
300 ds_send(lp, &pkt, sizeof(pkt));
301}
302
303struct ds_shutdown_req {
304 __u64 req_num;
305 __u32 ms_delay;
306};
307
308struct ds_shutdown_res {
309 __u64 req_num;
310 __u32 result;
311 char reason[1];
312};
313
314static void domain_shutdown_data(struct ds_info *dp,
315 struct ds_cap_state *cp,
316 void *buf, int len)
317{
318 struct ldc_channel *lp = dp->lp;
319 struct ds_data *dpkt = buf;
320 struct ds_shutdown_req *rp;
321 struct {
322 struct ds_data data;
323 struct ds_shutdown_res res;
324 } pkt;
325
326 rp = (struct ds_shutdown_req *) (dpkt + 1);
327
328 printk(KERN_ALERT "ds-%lu: Shutdown request from "
329 "LDOM manager received.\n", dp->id);
330
331 memset(&pkt, 0, sizeof(pkt));
332 pkt.data.tag.type = DS_DATA;
333 pkt.data.tag.len = sizeof(pkt) - sizeof(struct ds_msg_tag);
334 pkt.data.handle = cp->handle;
335 pkt.res.req_num = rp->req_num;
336 pkt.res.result = DS_OK;
337 pkt.res.reason[0] = 0;
338
339 ds_send(lp, &pkt, sizeof(pkt));
340
341 orderly_poweroff(true);
342}
343
344struct ds_panic_req {
345 __u64 req_num;
346};
347
348struct ds_panic_res {
349 __u64 req_num;
350 __u32 result;
351 char reason[1];
352};
353
354static void domain_panic_data(struct ds_info *dp,
355 struct ds_cap_state *cp,
356 void *buf, int len)
357{
358 struct ldc_channel *lp = dp->lp;
359 struct ds_data *dpkt = buf;
360 struct ds_panic_req *rp;
361 struct {
362 struct ds_data data;
363 struct ds_panic_res res;
364 } pkt;
365
366 rp = (struct ds_panic_req *) (dpkt + 1);
367
368 printk(KERN_ALERT "ds-%lu: Panic request from "
369 "LDOM manager received.\n", dp->id);
370
371 memset(&pkt, 0, sizeof(pkt));
372 pkt.data.tag.type = DS_DATA;
373 pkt.data.tag.len = sizeof(pkt) - sizeof(struct ds_msg_tag);
374 pkt.data.handle = cp->handle;
375 pkt.res.req_num = rp->req_num;
376 pkt.res.result = DS_OK;
377 pkt.res.reason[0] = 0;
378
379 ds_send(lp, &pkt, sizeof(pkt));
380
381 panic("PANIC requested by LDOM manager.");
382}
383
384#ifdef CONFIG_HOTPLUG_CPU
385struct dr_cpu_tag {
386 __u64 req_num;
387 __u32 type;
388#define DR_CPU_CONFIGURE 0x43
389#define DR_CPU_UNCONFIGURE 0x55
390#define DR_CPU_FORCE_UNCONFIGURE 0x46
391#define DR_CPU_STATUS 0x53
392
393/* Responses */
394#define DR_CPU_OK 0x6f
395#define DR_CPU_ERROR 0x65
396
397 __u32 num_records;
398};
399
400struct dr_cpu_resp_entry {
401 __u32 cpu;
402 __u32 result;
403#define DR_CPU_RES_OK 0x00
404#define DR_CPU_RES_FAILURE 0x01
405#define DR_CPU_RES_BLOCKED 0x02
406#define DR_CPU_RES_CPU_NOT_RESPONDING 0x03
407#define DR_CPU_RES_NOT_IN_MD 0x04
408
409 __u32 stat;
410#define DR_CPU_STAT_NOT_PRESENT 0x00
411#define DR_CPU_STAT_UNCONFIGURED 0x01
412#define DR_CPU_STAT_CONFIGURED 0x02
413
414 __u32 str_off;
415};
416
417static void __dr_cpu_send_error(struct ds_info *dp,
418 struct ds_cap_state *cp,
419 struct ds_data *data)
420{
421 struct dr_cpu_tag *tag = (struct dr_cpu_tag *) (data + 1);
422 struct {
423 struct ds_data data;
424 struct dr_cpu_tag tag;
425 } pkt;
426 int msg_len;
427
428 memset(&pkt, 0, sizeof(pkt));
429 pkt.data.tag.type = DS_DATA;
430 pkt.data.handle = cp->handle;
431 pkt.tag.req_num = tag->req_num;
432 pkt.tag.type = DR_CPU_ERROR;
433 pkt.tag.num_records = 0;
434
435 msg_len = (sizeof(struct ds_data) +
436 sizeof(struct dr_cpu_tag));
437
438 pkt.data.tag.len = msg_len - sizeof(struct ds_msg_tag);
439
440 __ds_send(dp->lp, &pkt, msg_len);
441}
442
443static void dr_cpu_send_error(struct ds_info *dp,
444 struct ds_cap_state *cp,
445 struct ds_data *data)
446{
447 unsigned long flags;
448
449 spin_lock_irqsave(&ds_lock, flags);
450 __dr_cpu_send_error(dp, cp, data);
451 spin_unlock_irqrestore(&ds_lock, flags);
452}
453
454#define CPU_SENTINEL 0xffffffff
455
456static void purge_dups(u32 *list, u32 num_ents)
457{
458 unsigned int i;
459
460 for (i = 0; i < num_ents; i++) {
461 u32 cpu = list[i];
462 unsigned int j;
463
464 if (cpu == CPU_SENTINEL)
465 continue;
466
467 for (j = i + 1; j < num_ents; j++) {
468 if (list[j] == cpu)
469 list[j] = CPU_SENTINEL;
470 }
471 }
472}
473
474static int dr_cpu_size_response(int ncpus)
475{
476 return (sizeof(struct ds_data) +
477 sizeof(struct dr_cpu_tag) +
478 (sizeof(struct dr_cpu_resp_entry) * ncpus));
479}
480
481static void dr_cpu_init_response(struct ds_data *resp, u64 req_num,
482 u64 handle, int resp_len, int ncpus,
483 cpumask_t *mask, u32 default_stat)
484{
485 struct dr_cpu_resp_entry *ent;
486 struct dr_cpu_tag *tag;
487 int i, cpu;
488
489 tag = (struct dr_cpu_tag *) (resp + 1);
490 ent = (struct dr_cpu_resp_entry *) (tag + 1);
491
492 resp->tag.type = DS_DATA;
493 resp->tag.len = resp_len - sizeof(struct ds_msg_tag);
494 resp->handle = handle;
495 tag->req_num = req_num;
496 tag->type = DR_CPU_OK;
497 tag->num_records = ncpus;
498
499 i = 0;
500 for_each_cpu_mask(cpu, *mask) {
501 ent[i].cpu = cpu;
502 ent[i].result = DR_CPU_RES_OK;
503 ent[i].stat = default_stat;
504 i++;
505 }
506 BUG_ON(i != ncpus);
507}
508
509static void dr_cpu_mark(struct ds_data *resp, int cpu, int ncpus,
510 u32 res, u32 stat)
511{
512 struct dr_cpu_resp_entry *ent;
513 struct dr_cpu_tag *tag;
514 int i;
515
516 tag = (struct dr_cpu_tag *) (resp + 1);
517 ent = (struct dr_cpu_resp_entry *) (tag + 1);
518
519 for (i = 0; i < ncpus; i++) {
520 if (ent[i].cpu != cpu)
521 continue;
522 ent[i].result = res;
523 ent[i].stat = stat;
524 break;
525 }
526}
527
528static int __cpuinit dr_cpu_configure(struct ds_info *dp,
529 struct ds_cap_state *cp,
530 u64 req_num,
531 cpumask_t *mask)
532{
533 struct ds_data *resp;
534 int resp_len, ncpus, cpu;
535 unsigned long flags;
536
537 ncpus = cpus_weight(*mask);
538 resp_len = dr_cpu_size_response(ncpus);
539 resp = kzalloc(resp_len, GFP_KERNEL);
540 if (!resp)
541 return -ENOMEM;
542
543 dr_cpu_init_response(resp, req_num, cp->handle,
544 resp_len, ncpus, mask,
545 DR_CPU_STAT_CONFIGURED);
546
547 mdesc_fill_in_cpu_data(*mask);
548
549 for_each_cpu_mask(cpu, *mask) {
550 int err;
551
552 printk(KERN_INFO "ds-%lu: Starting cpu %d...\n",
553 dp->id, cpu);
554 err = cpu_up(cpu);
555 if (err) {
556 __u32 res = DR_CPU_RES_FAILURE;
557 __u32 stat = DR_CPU_STAT_UNCONFIGURED;
558
559 if (!cpu_present(cpu)) {
560 /* CPU not present in MD */
561 res = DR_CPU_RES_NOT_IN_MD;
562 stat = DR_CPU_STAT_NOT_PRESENT;
563 } else if (err == -ENODEV) {
564 /* CPU did not call in successfully */
565 res = DR_CPU_RES_CPU_NOT_RESPONDING;
566 }
567
568 printk(KERN_INFO "ds-%lu: CPU startup failed err=%d\n",
569 dp->id, err);
570 dr_cpu_mark(resp, cpu, ncpus, res, stat);
571 }
572 }
573
574 spin_lock_irqsave(&ds_lock, flags);
575 __ds_send(dp->lp, resp, resp_len);
576 spin_unlock_irqrestore(&ds_lock, flags);
577
578 kfree(resp);
579
580 /* Redistribute IRQs, taking into account the new cpus. */
581 fixup_irqs();
582
583 return 0;
584}
585
586static int dr_cpu_unconfigure(struct ds_info *dp,
587 struct ds_cap_state *cp,
588 u64 req_num,
589 cpumask_t *mask)
590{
591 struct ds_data *resp;
592 int resp_len, ncpus, cpu;
593 unsigned long flags;
594
595 ncpus = cpus_weight(*mask);
596 resp_len = dr_cpu_size_response(ncpus);
597 resp = kzalloc(resp_len, GFP_KERNEL);
598 if (!resp)
599 return -ENOMEM;
600
601 dr_cpu_init_response(resp, req_num, cp->handle,
602 resp_len, ncpus, mask,
603 DR_CPU_STAT_UNCONFIGURED);
604
605 for_each_cpu_mask(cpu, *mask) {
606 int err;
607
608 printk(KERN_INFO "ds-%lu: Shutting down cpu %d...\n",
609 dp->id, cpu);
610 err = cpu_down(cpu);
611 if (err)
612 dr_cpu_mark(resp, cpu, ncpus,
613 DR_CPU_RES_FAILURE,
614 DR_CPU_STAT_CONFIGURED);
615 }
616
617 spin_lock_irqsave(&ds_lock, flags);
618 __ds_send(dp->lp, resp, resp_len);
619 spin_unlock_irqrestore(&ds_lock, flags);
620
621 kfree(resp);
622
623 return 0;
624}
625
626static void __cpuinit dr_cpu_data(struct ds_info *dp,
627 struct ds_cap_state *cp,
628 void *buf, int len)
629{
630 struct ds_data *data = buf;
631 struct dr_cpu_tag *tag = (struct dr_cpu_tag *) (data + 1);
632 u32 *cpu_list = (u32 *) (tag + 1);
633 u64 req_num = tag->req_num;
634 cpumask_t mask;
635 unsigned int i;
636 int err;
637
638 switch (tag->type) {
639 case DR_CPU_CONFIGURE:
640 case DR_CPU_UNCONFIGURE:
641 case DR_CPU_FORCE_UNCONFIGURE:
642 break;
643
644 default:
645 dr_cpu_send_error(dp, cp, data);
646 return;
647 }
648
649 purge_dups(cpu_list, tag->num_records);
650
651 cpus_clear(mask);
652 for (i = 0; i < tag->num_records; i++) {
653 if (cpu_list[i] == CPU_SENTINEL)
654 continue;
655
656 if (cpu_list[i] < NR_CPUS)
657 cpu_set(cpu_list[i], mask);
658 }
659
660 if (tag->type == DR_CPU_CONFIGURE)
661 err = dr_cpu_configure(dp, cp, req_num, &mask);
662 else
663 err = dr_cpu_unconfigure(dp, cp, req_num, &mask);
664
665 if (err)
666 dr_cpu_send_error(dp, cp, data);
667}
668#endif /* CONFIG_HOTPLUG_CPU */
669
670struct ds_pri_msg {
671 __u64 req_num;
672 __u64 type;
673#define DS_PRI_REQUEST 0x00
674#define DS_PRI_DATA 0x01
675#define DS_PRI_UPDATE 0x02
676};
677
678static void ds_pri_data(struct ds_info *dp,
679 struct ds_cap_state *cp,
680 void *buf, int len)
681{
682 struct ds_data *dpkt = buf;
683 struct ds_pri_msg *rp;
684
685 rp = (struct ds_pri_msg *) (dpkt + 1);
686
687 printk(KERN_INFO "ds-%lu: PRI REQ [%lx:%lx], len=%d\n",
688 dp->id, rp->req_num, rp->type, len);
689}
690
691struct ds_var_hdr {
692 __u32 type;
693#define DS_VAR_SET_REQ 0x00
694#define DS_VAR_DELETE_REQ 0x01
695#define DS_VAR_SET_RESP 0x02
696#define DS_VAR_DELETE_RESP 0x03
697};
698
699struct ds_var_set_msg {
700 struct ds_var_hdr hdr;
701 char name_and_value[0];
702};
703
704struct ds_var_delete_msg {
705 struct ds_var_hdr hdr;
706 char name[0];
707};
708
709struct ds_var_resp {
710 struct ds_var_hdr hdr;
711 __u32 result;
712#define DS_VAR_SUCCESS 0x00
713#define DS_VAR_NO_SPACE 0x01
714#define DS_VAR_INVALID_VAR 0x02
715#define DS_VAR_INVALID_VAL 0x03
716#define DS_VAR_NOT_PRESENT 0x04
717};
718
719static DEFINE_MUTEX(ds_var_mutex);
720static int ds_var_doorbell;
721static int ds_var_response;
722
723static void ds_var_data(struct ds_info *dp,
724 struct ds_cap_state *cp,
725 void *buf, int len)
726{
727 struct ds_data *dpkt = buf;
728 struct ds_var_resp *rp;
729
730 rp = (struct ds_var_resp *) (dpkt + 1);
731
732 if (rp->hdr.type != DS_VAR_SET_RESP &&
733 rp->hdr.type != DS_VAR_DELETE_RESP)
734 return;
735
736 ds_var_response = rp->result;
737 wmb();
738 ds_var_doorbell = 1;
739}
740
741void ldom_set_var(const char *var, const char *value)
742{
743 struct ds_cap_state *cp;
744 struct ds_info *dp;
745 unsigned long flags;
746
747 spin_lock_irqsave(&ds_lock, flags);
748 cp = NULL;
749 for (dp = ds_info_list; dp; dp = dp->next) {
750 struct ds_cap_state *tmp;
751
752 tmp = find_cap_by_string(dp, "var-config");
753 if (tmp && tmp->state == CAP_STATE_REGISTERED) {
754 cp = tmp;
755 break;
756 }
757 }
758 if (!cp) {
759 for (dp = ds_info_list; dp; dp = dp->next) {
760 struct ds_cap_state *tmp;
761
762 tmp = find_cap_by_string(dp, "var-config-backup");
763 if (tmp && tmp->state == CAP_STATE_REGISTERED) {
764 cp = tmp;
765 break;
766 }
767 }
768 }
769 spin_unlock_irqrestore(&ds_lock, flags);
770
771 if (cp) {
772 union {
773 struct {
774 struct ds_data data;
775 struct ds_var_set_msg msg;
776 } header;
777 char all[512];
778 } pkt;
779 char *base, *p;
780 int msg_len, loops;
781
782 memset(&pkt, 0, sizeof(pkt));
783 pkt.header.data.tag.type = DS_DATA;
784 pkt.header.data.handle = cp->handle;
785 pkt.header.msg.hdr.type = DS_VAR_SET_REQ;
786 base = p = &pkt.header.msg.name_and_value[0];
787 strcpy(p, var);
788 p += strlen(var) + 1;
789 strcpy(p, value);
790 p += strlen(value) + 1;
791
792 msg_len = (sizeof(struct ds_data) +
793 sizeof(struct ds_var_set_msg) +
794 (p - base));
795 msg_len = (msg_len + 3) & ~3;
796 pkt.header.data.tag.len = msg_len - sizeof(struct ds_msg_tag);
797
798 mutex_lock(&ds_var_mutex);
799
800 spin_lock_irqsave(&ds_lock, flags);
801 ds_var_doorbell = 0;
802 ds_var_response = -1;
803
804 __ds_send(dp->lp, &pkt, msg_len);
805 spin_unlock_irqrestore(&ds_lock, flags);
806
807 loops = 1000;
808 while (ds_var_doorbell == 0) {
809 if (loops-- < 0)
810 break;
811 barrier();
812 udelay(100);
813 }
814
815 mutex_unlock(&ds_var_mutex);
816
817 if (ds_var_doorbell == 0 ||
818 ds_var_response != DS_VAR_SUCCESS)
819 printk(KERN_ERR "ds-%lu: var-config [%s:%s] "
820 "failed, response(%d).\n",
821 dp->id, var, value,
822 ds_var_response);
823 } else {
824 printk(KERN_ERR PFX "var-config not registered so "
825 "could not set (%s) variable to (%s).\n",
826 var, value);
827 }
828}
829
830void ldom_reboot(const char *boot_command)
831{
832 /* Don't bother with any of this if the boot_command
833 * is empty.
834 */
835 if (boot_command && strlen(boot_command)) {
836 char full_boot_str[256];
837
838 strcpy(full_boot_str, "boot ");
839 strcpy(full_boot_str + strlen("boot "), boot_command);
840
841 ldom_set_var("reboot-command", full_boot_str);
842 }
843 sun4v_mach_sir();
844}
845
846void ldom_power_off(void)
847{
848 sun4v_mach_exit(0);
849}
850
851static void ds_conn_reset(struct ds_info *dp)
852{
853 printk(KERN_ERR "ds-%lu: ds_conn_reset() from %p\n",
854 dp->id, __builtin_return_address(0));
855}
856
857static int register_services(struct ds_info *dp)
858{
859 struct ldc_channel *lp = dp->lp;
860 int i;
861
862 for (i = 0; i < dp->num_ds_states; i++) {
863 struct {
864 struct ds_reg_req req;
865 u8 id_buf[256];
866 } pbuf;
867 struct ds_cap_state *cp = &dp->ds_states[i];
868 int err, msg_len;
869 u64 new_count;
870
871 if (cp->state == CAP_STATE_REGISTERED)
872 continue;
873
874 new_count = sched_clock() & 0xffffffff;
875 cp->handle = ((u64) i << 32) | new_count;
876
877 msg_len = (sizeof(struct ds_reg_req) +
878 strlen(cp->service_id));
879
880 memset(&pbuf, 0, sizeof(pbuf));
881 pbuf.req.tag.type = DS_REG_REQ;
882 pbuf.req.tag.len = (msg_len - sizeof(struct ds_msg_tag));
883 pbuf.req.handle = cp->handle;
884 pbuf.req.major = 1;
885 pbuf.req.minor = 0;
886 strcpy(pbuf.req.svc_id, cp->service_id);
887
888 err = __ds_send(lp, &pbuf, msg_len);
889 if (err > 0)
890 cp->state = CAP_STATE_REG_SENT;
891 }
892 return 0;
893}
894
895static int ds_handshake(struct ds_info *dp, struct ds_msg_tag *pkt)
896{
897
898 if (dp->hs_state == DS_HS_START) {
899 if (pkt->type != DS_INIT_ACK)
900 goto conn_reset;
901
902 dp->hs_state = DS_HS_DONE;
903
904 return register_services(dp);
905 }
906
907 if (dp->hs_state != DS_HS_DONE)
908 goto conn_reset;
909
910 if (pkt->type == DS_REG_ACK) {
911 struct ds_reg_ack *ap = (struct ds_reg_ack *) pkt;
912 struct ds_cap_state *cp = find_cap(dp, ap->handle);
913
914 if (!cp) {
915 printk(KERN_ERR "ds-%lu: REG ACK for unknown "
916 "handle %lx\n", dp->id, ap->handle);
917 return 0;
918 }
919 printk(KERN_INFO "ds-%lu: Registered %s service.\n",
920 dp->id, cp->service_id);
921 cp->state = CAP_STATE_REGISTERED;
922 } else if (pkt->type == DS_REG_NACK) {
923 struct ds_reg_nack *np = (struct ds_reg_nack *) pkt;
924 struct ds_cap_state *cp = find_cap(dp, np->handle);
925
926 if (!cp) {
927 printk(KERN_ERR "ds-%lu: REG NACK for "
928 "unknown handle %lx\n",
929 dp->id, np->handle);
930 return 0;
931 }
932 cp->state = CAP_STATE_UNKNOWN;
933 }
934
935 return 0;
936
937conn_reset:
938 ds_conn_reset(dp);
939 return -ECONNRESET;
940}
941
942static void __send_ds_nack(struct ds_info *dp, u64 handle)
943{
944 struct ds_data_nack nack = {
945 .tag = {
946 .type = DS_NACK,
947 .len = (sizeof(struct ds_data_nack) -
948 sizeof(struct ds_msg_tag)),
949 },
950 .handle = handle,
951 .result = DS_INV_HDL,
952 };
953
954 __ds_send(dp->lp, &nack, sizeof(nack));
955}
956
957static LIST_HEAD(ds_work_list);
958static DECLARE_WAIT_QUEUE_HEAD(ds_wait);
959
960struct ds_queue_entry {
961 struct list_head list;
962 struct ds_info *dp;
963 int req_len;
964 int __pad;
965 u64 req[0];
966};
967
968static void process_ds_work(void)
969{
970 struct ds_queue_entry *qp, *tmp;
971 unsigned long flags;
972 LIST_HEAD(todo);
973
974 spin_lock_irqsave(&ds_lock, flags);
975 list_splice_init(&ds_work_list, &todo);
976 spin_unlock_irqrestore(&ds_lock, flags);
977
978 list_for_each_entry_safe(qp, tmp, &todo, list) {
979 struct ds_data *dpkt = (struct ds_data *) qp->req;
980 struct ds_info *dp = qp->dp;
981 struct ds_cap_state *cp = find_cap(dp, dpkt->handle);
982 int req_len = qp->req_len;
983
984 if (!cp) {
985 printk(KERN_ERR "ds-%lu: Data for unknown "
986 "handle %lu\n",
987 dp->id, dpkt->handle);
988
989 spin_lock_irqsave(&ds_lock, flags);
990 __send_ds_nack(dp, dpkt->handle);
991 spin_unlock_irqrestore(&ds_lock, flags);
992 } else {
993 cp->data(dp, cp, dpkt, req_len);
994 }
995
996 list_del(&qp->list);
997 kfree(qp);
998 }
999}
1000
1001static int ds_thread(void *__unused)
1002{
1003 DEFINE_WAIT(wait);
1004
1005 while (1) {
1006 prepare_to_wait(&ds_wait, &wait, TASK_INTERRUPTIBLE);
1007 if (list_empty(&ds_work_list))
1008 schedule();
1009 finish_wait(&ds_wait, &wait);
1010
1011 if (kthread_should_stop())
1012 break;
1013
1014 process_ds_work();
1015 }
1016
1017 return 0;
1018}
1019
1020static int ds_data(struct ds_info *dp, struct ds_msg_tag *pkt, int len)
1021{
1022 struct ds_data *dpkt = (struct ds_data *) pkt;
1023 struct ds_queue_entry *qp;
1024
1025 qp = kmalloc(sizeof(struct ds_queue_entry) + len, GFP_ATOMIC);
1026 if (!qp) {
1027 __send_ds_nack(dp, dpkt->handle);
1028 } else {
1029 qp->dp = dp;
1030 memcpy(&qp->req, pkt, len);
1031 list_add_tail(&qp->list, &ds_work_list);
1032 wake_up(&ds_wait);
1033 }
1034 return 0;
1035}
1036
1037static void ds_up(struct ds_info *dp)
1038{
1039 struct ldc_channel *lp = dp->lp;
1040 struct ds_ver_req req;
1041 int err;
1042
1043 req.tag.type = DS_INIT_REQ;
1044 req.tag.len = sizeof(req) - sizeof(struct ds_msg_tag);
1045 req.ver.major = 1;
1046 req.ver.minor = 0;
1047
1048 err = __ds_send(lp, &req, sizeof(req));
1049 if (err > 0)
1050 dp->hs_state = DS_HS_START;
1051}
1052
1053static void ds_reset(struct ds_info *dp)
1054{
1055 int i;
1056
1057 dp->hs_state = 0;
1058
1059 for (i = 0; i < dp->num_ds_states; i++) {
1060 struct ds_cap_state *cp = &dp->ds_states[i];
1061
1062 cp->state = CAP_STATE_UNKNOWN;
1063 }
1064}
1065
1066static void ds_event(void *arg, int event)
1067{
1068 struct ds_info *dp = arg;
1069 struct ldc_channel *lp = dp->lp;
1070 unsigned long flags;
1071 int err;
1072
1073 spin_lock_irqsave(&ds_lock, flags);
1074
1075 if (event == LDC_EVENT_UP) {
1076 ds_up(dp);
1077 spin_unlock_irqrestore(&ds_lock, flags);
1078 return;
1079 }
1080
1081 if (event == LDC_EVENT_RESET) {
1082 ds_reset(dp);
1083 spin_unlock_irqrestore(&ds_lock, flags);
1084 return;
1085 }
1086
1087 if (event != LDC_EVENT_DATA_READY) {
1088 printk(KERN_WARNING "ds-%lu: Unexpected LDC event %d\n",
1089 dp->id, event);
1090 spin_unlock_irqrestore(&ds_lock, flags);
1091 return;
1092 }
1093
1094 err = 0;
1095 while (1) {
1096 struct ds_msg_tag *tag;
1097
1098 err = ldc_read(lp, dp->rcv_buf, sizeof(*tag));
1099
1100 if (unlikely(err < 0)) {
1101 if (err == -ECONNRESET)
1102 ds_conn_reset(dp);
1103 break;
1104 }
1105 if (err == 0)
1106 break;
1107
1108 tag = dp->rcv_buf;
1109 err = ldc_read(lp, tag + 1, tag->len);
1110
1111 if (unlikely(err < 0)) {
1112 if (err == -ECONNRESET)
1113 ds_conn_reset(dp);
1114 break;
1115 }
1116 if (err < tag->len)
1117 break;
1118
1119 if (tag->type < DS_DATA)
1120 err = ds_handshake(dp, dp->rcv_buf);
1121 else
1122 err = ds_data(dp, dp->rcv_buf,
1123 sizeof(*tag) + err);
1124 if (err == -ECONNRESET)
1125 break;
1126 }
1127
1128 spin_unlock_irqrestore(&ds_lock, flags);
1129}
1130
1131static int __devinit ds_probe(struct vio_dev *vdev,
1132 const struct vio_device_id *id)
1133{
1134 static int ds_version_printed;
1135 struct ldc_channel_config ds_cfg = {
1136 .event = ds_event,
1137 .mtu = 4096,
1138 .mode = LDC_MODE_STREAM,
1139 };
1140 struct mdesc_handle *hp;
1141 struct ldc_channel *lp;
1142 struct ds_info *dp;
1143 const u64 *val;
1144 int err, i;
1145
1146 if (ds_version_printed++ == 0)
1147 printk(KERN_INFO "%s", version);
1148
1149 dp = kzalloc(sizeof(*dp), GFP_KERNEL);
1150 err = -ENOMEM;
1151 if (!dp)
1152 goto out_err;
1153
1154 hp = mdesc_grab();
1155 val = mdesc_get_property(hp, vdev->mp, "id", NULL);
1156 if (val)
1157 dp->id = *val;
1158 mdesc_release(hp);
1159
1160 dp->rcv_buf = kzalloc(4096, GFP_KERNEL);
1161 if (!dp->rcv_buf)
1162 goto out_free_dp;
1163
1164 dp->rcv_buf_len = 4096;
1165
1166 dp->ds_states = kzalloc(sizeof(ds_states_template),
1167 GFP_KERNEL);
1168 if (!dp->ds_states)
1169 goto out_free_rcv_buf;
1170
1171 memcpy(dp->ds_states, ds_states_template,
1172 sizeof(ds_states_template));
1173 dp->num_ds_states = ARRAY_SIZE(ds_states_template);
1174
1175 for (i = 0; i < dp->num_ds_states; i++)
1176 dp->ds_states[i].handle = ((u64)i << 32);
1177
1178 ds_cfg.tx_irq = vdev->tx_irq;
1179 ds_cfg.rx_irq = vdev->rx_irq;
1180
1181 lp = ldc_alloc(vdev->channel_id, &ds_cfg, dp);
1182 if (IS_ERR(lp)) {
1183 err = PTR_ERR(lp);
1184 goto out_free_ds_states;
1185 }
1186 dp->lp = lp;
1187
1188 err = ldc_bind(lp, "DS");
1189 if (err)
1190 goto out_free_ldc;
1191
1192 spin_lock_irq(&ds_lock);
1193 dp->next = ds_info_list;
1194 ds_info_list = dp;
1195 spin_unlock_irq(&ds_lock);
1196
1197 return err;
1198
1199out_free_ldc:
1200 ldc_free(dp->lp);
1201
1202out_free_ds_states:
1203 kfree(dp->ds_states);
1204
1205out_free_rcv_buf:
1206 kfree(dp->rcv_buf);
1207
1208out_free_dp:
1209 kfree(dp);
1210
1211out_err:
1212 return err;
1213}
1214
1215static int ds_remove(struct vio_dev *vdev)
1216{
1217 return 0;
1218}
1219
1220static struct vio_device_id __initdata ds_match[] = {
1221 {
1222 .type = "domain-services-port",
1223 },
1224 {},
1225};
1226
1227static struct vio_driver ds_driver = {
1228 .id_table = ds_match,
1229 .probe = ds_probe,
1230 .remove = ds_remove,
1231 .driver = {
1232 .name = "ds",
1233 .owner = THIS_MODULE,
1234 }
1235};
1236
1237static int __init ds_init(void)
1238{
1239 kthread_run(ds_thread, NULL, "kldomd");
1240
1241 return vio_register_driver(&ds_driver);
1242}
1243
1244subsys_initcall(ds_init);
diff --git a/arch/sparc/kernel/dtlb_miss.S b/arch/sparc/kernel/dtlb_miss.S
new file mode 100644
index 000000000000..09a6a15a7105
--- /dev/null
+++ b/arch/sparc/kernel/dtlb_miss.S
@@ -0,0 +1,39 @@
1/* DTLB ** ICACHE line 1: Context 0 check and TSB load */
2 ldxa [%g0] ASI_DMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer
3 ldxa [%g0] ASI_DMMU, %g6 ! Get TAG TARGET
4 srlx %g6, 48, %g5 ! Get context
5 sllx %g6, 22, %g6 ! Zero out context
6 brz,pn %g5, kvmap_dtlb ! Context 0 processing
7 srlx %g6, 22, %g6 ! Delay slot
8 TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry
9 cmp %g4, %g6 ! Compare TAG
10
11/* DTLB ** ICACHE line 2: TSB compare and TLB load */
12 bne,pn %xcc, tsb_miss_dtlb ! Miss
13 mov FAULT_CODE_DTLB, %g3
14 stxa %g5, [%g0] ASI_DTLB_DATA_IN ! Load TLB
15 retry ! Trap done
16 nop
17 nop
18 nop
19 nop
20
21/* DTLB ** ICACHE line 3: */
22 nop
23 nop
24 nop
25 nop
26 nop
27 nop
28 nop
29 nop
30
31/* DTLB ** ICACHE line 4: */
32 nop
33 nop
34 nop
35 nop
36 nop
37 nop
38 nop
39 nop
diff --git a/arch/sparc/kernel/dtlb_prot.S b/arch/sparc/kernel/dtlb_prot.S
new file mode 100644
index 000000000000..b2c2c5be281c
--- /dev/null
+++ b/arch/sparc/kernel/dtlb_prot.S
@@ -0,0 +1,54 @@
1/*
2 * dtlb_prot.S: DTLB protection trap strategy.
3 * This is included directly into the trap table.
4 *
5 * Copyright (C) 1996,1998 David S. Miller (davem@redhat.com)
6 * Copyright (C) 1997,1998 Jakub Jelinek (jj@ultra.linux.cz)
7 */
8
9/* Ways we can get here:
10 *
11 * [TL == 0] 1) User stores to readonly pages.
12 * [TL == 0] 2) Nucleus stores to user readonly pages.
13 * [TL > 0] 3) Nucleus stores to user readonly stack frame.
14 */
15
16/* PROT ** ICACHE line 1: User DTLB protection trap */
17 mov TLB_SFSR, %g1
18 stxa %g0, [%g1] ASI_DMMU ! Clear FaultValid bit
19 membar #Sync ! Synchronize stores
20 rdpr %pstate, %g5 ! Move into alt-globals
21 wrpr %g5, PSTATE_AG|PSTATE_MG, %pstate
22 rdpr %tl, %g1 ! Need a winfixup?
23 cmp %g1, 1 ! Trap level >1?
24 mov TLB_TAG_ACCESS, %g4 ! For reload of vaddr
25
26/* PROT ** ICACHE line 2: More real fault processing */
27 bgu,pn %xcc, winfix_trampoline ! Yes, perform winfixup
28 ldxa [%g4] ASI_DMMU, %g5 ! Put tagaccess in %g5
29 ba,pt %xcc, sparc64_realfault_common ! Nope, normal fault
30 mov FAULT_CODE_DTLB | FAULT_CODE_WRITE, %g4
31 nop
32 nop
33 nop
34 nop
35
36/* PROT ** ICACHE line 3: Unused... */
37 nop
38 nop
39 nop
40 nop
41 nop
42 nop
43 nop
44 nop
45
46/* PROT ** ICACHE line 4: Unused... */
47 nop
48 nop
49 nop
50 nop
51 nop
52 nop
53 nop
54 nop
diff --git a/arch/sparc/kernel/ebus.c b/arch/sparc/kernel/ebus.c
new file mode 100644
index 000000000000..77dbf6d45faf
--- /dev/null
+++ b/arch/sparc/kernel/ebus.c
@@ -0,0 +1,257 @@
1/* ebus.c: EBUS DMA library code.
2 *
3 * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
4 * Copyright (C) 1999 David S. Miller (davem@redhat.com)
5 */
6
7#include <linux/module.h>
8#include <linux/kernel.h>
9#include <linux/types.h>
10#include <linux/init.h>
11#include <linux/interrupt.h>
12#include <linux/delay.h>
13
14#include <asm/ebus_dma.h>
15#include <asm/io.h>
16
17#define EBDMA_CSR 0x00UL /* Control/Status */
18#define EBDMA_ADDR 0x04UL /* DMA Address */
19#define EBDMA_COUNT 0x08UL /* DMA Count */
20
21#define EBDMA_CSR_INT_PEND 0x00000001
22#define EBDMA_CSR_ERR_PEND 0x00000002
23#define EBDMA_CSR_DRAIN 0x00000004
24#define EBDMA_CSR_INT_EN 0x00000010
25#define EBDMA_CSR_RESET 0x00000080
26#define EBDMA_CSR_WRITE 0x00000100
27#define EBDMA_CSR_EN_DMA 0x00000200
28#define EBDMA_CSR_CYC_PEND 0x00000400
29#define EBDMA_CSR_DIAG_RD_DONE 0x00000800
30#define EBDMA_CSR_DIAG_WR_DONE 0x00001000
31#define EBDMA_CSR_EN_CNT 0x00002000
32#define EBDMA_CSR_TC 0x00004000
33#define EBDMA_CSR_DIS_CSR_DRN 0x00010000
34#define EBDMA_CSR_BURST_SZ_MASK 0x000c0000
35#define EBDMA_CSR_BURST_SZ_1 0x00080000
36#define EBDMA_CSR_BURST_SZ_4 0x00000000
37#define EBDMA_CSR_BURST_SZ_8 0x00040000
38#define EBDMA_CSR_BURST_SZ_16 0x000c0000
39#define EBDMA_CSR_DIAG_EN 0x00100000
40#define EBDMA_CSR_DIS_ERR_PEND 0x00400000
41#define EBDMA_CSR_TCI_DIS 0x00800000
42#define EBDMA_CSR_EN_NEXT 0x01000000
43#define EBDMA_CSR_DMA_ON 0x02000000
44#define EBDMA_CSR_A_LOADED 0x04000000
45#define EBDMA_CSR_NA_LOADED 0x08000000
46#define EBDMA_CSR_DEV_ID_MASK 0xf0000000
47
48#define EBUS_DMA_RESET_TIMEOUT 10000
49
50static void __ebus_dma_reset(struct ebus_dma_info *p, int no_drain)
51{
52 int i;
53 u32 val = 0;
54
55 writel(EBDMA_CSR_RESET, p->regs + EBDMA_CSR);
56 udelay(1);
57
58 if (no_drain)
59 return;
60
61 for (i = EBUS_DMA_RESET_TIMEOUT; i > 0; i--) {
62 val = readl(p->regs + EBDMA_CSR);
63
64 if (!(val & (EBDMA_CSR_DRAIN | EBDMA_CSR_CYC_PEND)))
65 break;
66 udelay(10);
67 }
68}
69
70static irqreturn_t ebus_dma_irq(int irq, void *dev_id)
71{
72 struct ebus_dma_info *p = dev_id;
73 unsigned long flags;
74 u32 csr = 0;
75
76 spin_lock_irqsave(&p->lock, flags);
77 csr = readl(p->regs + EBDMA_CSR);
78 writel(csr, p->regs + EBDMA_CSR);
79 spin_unlock_irqrestore(&p->lock, flags);
80
81 if (csr & EBDMA_CSR_ERR_PEND) {
82 printk(KERN_CRIT "ebus_dma(%s): DMA error!\n", p->name);
83 p->callback(p, EBUS_DMA_EVENT_ERROR, p->client_cookie);
84 return IRQ_HANDLED;
85 } else if (csr & EBDMA_CSR_INT_PEND) {
86 p->callback(p,
87 (csr & EBDMA_CSR_TC) ?
88 EBUS_DMA_EVENT_DMA : EBUS_DMA_EVENT_DEVICE,
89 p->client_cookie);
90 return IRQ_HANDLED;
91 }
92
93 return IRQ_NONE;
94
95}
96
97int ebus_dma_register(struct ebus_dma_info *p)
98{
99 u32 csr;
100
101 if (!p->regs)
102 return -EINVAL;
103 if (p->flags & ~(EBUS_DMA_FLAG_USE_EBDMA_HANDLER |
104 EBUS_DMA_FLAG_TCI_DISABLE))
105 return -EINVAL;
106 if ((p->flags & EBUS_DMA_FLAG_USE_EBDMA_HANDLER) && !p->callback)
107 return -EINVAL;
108 if (!strlen(p->name))
109 return -EINVAL;
110
111 __ebus_dma_reset(p, 1);
112
113 csr = EBDMA_CSR_BURST_SZ_16 | EBDMA_CSR_EN_CNT;
114
115 if (p->flags & EBUS_DMA_FLAG_TCI_DISABLE)
116 csr |= EBDMA_CSR_TCI_DIS;
117
118 writel(csr, p->regs + EBDMA_CSR);
119
120 return 0;
121}
122EXPORT_SYMBOL(ebus_dma_register);
123
124int ebus_dma_irq_enable(struct ebus_dma_info *p, int on)
125{
126 unsigned long flags;
127 u32 csr;
128
129 if (on) {
130 if (p->flags & EBUS_DMA_FLAG_USE_EBDMA_HANDLER) {
131 if (request_irq(p->irq, ebus_dma_irq, IRQF_SHARED, p->name, p))
132 return -EBUSY;
133 }
134
135 spin_lock_irqsave(&p->lock, flags);
136 csr = readl(p->regs + EBDMA_CSR);
137 csr |= EBDMA_CSR_INT_EN;
138 writel(csr, p->regs + EBDMA_CSR);
139 spin_unlock_irqrestore(&p->lock, flags);
140 } else {
141 spin_lock_irqsave(&p->lock, flags);
142 csr = readl(p->regs + EBDMA_CSR);
143 csr &= ~EBDMA_CSR_INT_EN;
144 writel(csr, p->regs + EBDMA_CSR);
145 spin_unlock_irqrestore(&p->lock, flags);
146
147 if (p->flags & EBUS_DMA_FLAG_USE_EBDMA_HANDLER) {
148 free_irq(p->irq, p);
149 }
150 }
151
152 return 0;
153}
154EXPORT_SYMBOL(ebus_dma_irq_enable);
155
156void ebus_dma_unregister(struct ebus_dma_info *p)
157{
158 unsigned long flags;
159 u32 csr;
160 int irq_on = 0;
161
162 spin_lock_irqsave(&p->lock, flags);
163 csr = readl(p->regs + EBDMA_CSR);
164 if (csr & EBDMA_CSR_INT_EN) {
165 csr &= ~EBDMA_CSR_INT_EN;
166 writel(csr, p->regs + EBDMA_CSR);
167 irq_on = 1;
168 }
169 spin_unlock_irqrestore(&p->lock, flags);
170
171 if (irq_on)
172 free_irq(p->irq, p);
173}
174EXPORT_SYMBOL(ebus_dma_unregister);
175
176int ebus_dma_request(struct ebus_dma_info *p, dma_addr_t bus_addr, size_t len)
177{
178 unsigned long flags;
179 u32 csr;
180 int err;
181
182 if (len >= (1 << 24))
183 return -EINVAL;
184
185 spin_lock_irqsave(&p->lock, flags);
186 csr = readl(p->regs + EBDMA_CSR);
187 err = -EINVAL;
188 if (!(csr & EBDMA_CSR_EN_DMA))
189 goto out;
190 err = -EBUSY;
191 if (csr & EBDMA_CSR_NA_LOADED)
192 goto out;
193
194 writel(len, p->regs + EBDMA_COUNT);
195 writel(bus_addr, p->regs + EBDMA_ADDR);
196 err = 0;
197
198out:
199 spin_unlock_irqrestore(&p->lock, flags);
200
201 return err;
202}
203EXPORT_SYMBOL(ebus_dma_request);
204
205void ebus_dma_prepare(struct ebus_dma_info *p, int write)
206{
207 unsigned long flags;
208 u32 csr;
209
210 spin_lock_irqsave(&p->lock, flags);
211 __ebus_dma_reset(p, 0);
212
213 csr = (EBDMA_CSR_INT_EN |
214 EBDMA_CSR_EN_CNT |
215 EBDMA_CSR_BURST_SZ_16 |
216 EBDMA_CSR_EN_NEXT);
217
218 if (write)
219 csr |= EBDMA_CSR_WRITE;
220 if (p->flags & EBUS_DMA_FLAG_TCI_DISABLE)
221 csr |= EBDMA_CSR_TCI_DIS;
222
223 writel(csr, p->regs + EBDMA_CSR);
224
225 spin_unlock_irqrestore(&p->lock, flags);
226}
227EXPORT_SYMBOL(ebus_dma_prepare);
228
229unsigned int ebus_dma_residue(struct ebus_dma_info *p)
230{
231 return readl(p->regs + EBDMA_COUNT);
232}
233EXPORT_SYMBOL(ebus_dma_residue);
234
235unsigned int ebus_dma_addr(struct ebus_dma_info *p)
236{
237 return readl(p->regs + EBDMA_ADDR);
238}
239EXPORT_SYMBOL(ebus_dma_addr);
240
241void ebus_dma_enable(struct ebus_dma_info *p, int on)
242{
243 unsigned long flags;
244 u32 orig_csr, csr;
245
246 spin_lock_irqsave(&p->lock, flags);
247 orig_csr = csr = readl(p->regs + EBDMA_CSR);
248 if (on)
249 csr |= EBDMA_CSR_EN_DMA;
250 else
251 csr &= ~EBDMA_CSR_EN_DMA;
252 if ((orig_csr & EBDMA_CSR_EN_DMA) !=
253 (csr & EBDMA_CSR_EN_DMA))
254 writel(csr, p->regs + EBDMA_CSR);
255 spin_unlock_irqrestore(&p->lock, flags);
256}
257EXPORT_SYMBOL(ebus_dma_enable);
diff --git a/arch/sparc/kernel/entry.h b/arch/sparc/kernel/entry.h
new file mode 100644
index 000000000000..34d7ab5e10d2
--- /dev/null
+++ b/arch/sparc/kernel/entry.h
@@ -0,0 +1,195 @@
1#ifndef _ENTRY_H
2#define _ENTRY_H
3
4#include <linux/kernel.h>
5#include <linux/types.h>
6#include <linux/init.h>
7
8extern const char *sparc_cpu_type;
9extern const char *sparc_fpu_type;
10
11extern void __init per_cpu_patch(void);
12extern void __init sun4v_patch(void);
13extern void __init boot_cpu_id_too_large(int cpu);
14extern unsigned int dcache_parity_tl1_occurred;
15extern unsigned int icache_parity_tl1_occurred;
16
17extern asmlinkage void update_perfctrs(void);
18extern asmlinkage void sparc_breakpoint(struct pt_regs *regs);
19extern void timer_interrupt(int irq, struct pt_regs *regs);
20
21extern void do_notify_resume(struct pt_regs *regs,
22 unsigned long orig_i0,
23 unsigned long thread_info_flags);
24
25extern asmlinkage int syscall_trace_enter(struct pt_regs *regs);
26extern asmlinkage void syscall_trace_leave(struct pt_regs *regs);
27
28extern void bad_trap_tl1(struct pt_regs *regs, long lvl);
29
30extern void do_fpe_common(struct pt_regs *regs);
31extern void do_fpieee(struct pt_regs *regs);
32extern void do_fpother(struct pt_regs *regs);
33extern void do_tof(struct pt_regs *regs);
34extern void do_div0(struct pt_regs *regs);
35extern void do_illegal_instruction(struct pt_regs *regs);
36extern void mem_address_unaligned(struct pt_regs *regs,
37 unsigned long sfar,
38 unsigned long sfsr);
39extern void sun4v_do_mna(struct pt_regs *regs,
40 unsigned long addr,
41 unsigned long type_ctx);
42extern void do_privop(struct pt_regs *regs);
43extern void do_privact(struct pt_regs *regs);
44extern void do_cee(struct pt_regs *regs);
45extern void do_cee_tl1(struct pt_regs *regs);
46extern void do_dae_tl1(struct pt_regs *regs);
47extern void do_iae_tl1(struct pt_regs *regs);
48extern void do_div0_tl1(struct pt_regs *regs);
49extern void do_fpdis_tl1(struct pt_regs *regs);
50extern void do_fpieee_tl1(struct pt_regs *regs);
51extern void do_fpother_tl1(struct pt_regs *regs);
52extern void do_ill_tl1(struct pt_regs *regs);
53extern void do_irq_tl1(struct pt_regs *regs);
54extern void do_lddfmna_tl1(struct pt_regs *regs);
55extern void do_stdfmna_tl1(struct pt_regs *regs);
56extern void do_paw(struct pt_regs *regs);
57extern void do_paw_tl1(struct pt_regs *regs);
58extern void do_vaw(struct pt_regs *regs);
59extern void do_vaw_tl1(struct pt_regs *regs);
60extern void do_tof_tl1(struct pt_regs *regs);
61extern void do_getpsr(struct pt_regs *regs);
62
63extern void spitfire_insn_access_exception(struct pt_regs *regs,
64 unsigned long sfsr,
65 unsigned long sfar);
66extern void spitfire_insn_access_exception_tl1(struct pt_regs *regs,
67 unsigned long sfsr,
68 unsigned long sfar);
69extern void spitfire_data_access_exception(struct pt_regs *regs,
70 unsigned long sfsr,
71 unsigned long sfar);
72extern void spitfire_data_access_exception_tl1(struct pt_regs *regs,
73 unsigned long sfsr,
74 unsigned long sfar);
75extern void spitfire_access_error(struct pt_regs *regs,
76 unsigned long status_encoded,
77 unsigned long afar);
78
79extern void cheetah_fecc_handler(struct pt_regs *regs,
80 unsigned long afsr,
81 unsigned long afar);
82extern void cheetah_cee_handler(struct pt_regs *regs,
83 unsigned long afsr,
84 unsigned long afar);
85extern void cheetah_deferred_handler(struct pt_regs *regs,
86 unsigned long afsr,
87 unsigned long afar);
88extern void cheetah_plus_parity_error(int type, struct pt_regs *regs);
89
90extern void sun4v_insn_access_exception(struct pt_regs *regs,
91 unsigned long addr,
92 unsigned long type_ctx);
93extern void sun4v_insn_access_exception_tl1(struct pt_regs *regs,
94 unsigned long addr,
95 unsigned long type_ctx);
96extern void sun4v_data_access_exception(struct pt_regs *regs,
97 unsigned long addr,
98 unsigned long type_ctx);
99extern void sun4v_data_access_exception_tl1(struct pt_regs *regs,
100 unsigned long addr,
101 unsigned long type_ctx);
102extern void sun4v_resum_error(struct pt_regs *regs,
103 unsigned long offset);
104extern void sun4v_resum_overflow(struct pt_regs *regs);
105extern void sun4v_nonresum_error(struct pt_regs *regs,
106 unsigned long offset);
107extern void sun4v_nonresum_overflow(struct pt_regs *regs);
108
109extern unsigned long sun4v_err_itlb_vaddr;
110extern unsigned long sun4v_err_itlb_ctx;
111extern unsigned long sun4v_err_itlb_pte;
112extern unsigned long sun4v_err_itlb_error;
113
114extern void sun4v_itlb_error_report(struct pt_regs *regs, int tl);
115
116extern unsigned long sun4v_err_dtlb_vaddr;
117extern unsigned long sun4v_err_dtlb_ctx;
118extern unsigned long sun4v_err_dtlb_pte;
119extern unsigned long sun4v_err_dtlb_error;
120
121extern void sun4v_dtlb_error_report(struct pt_regs *regs, int tl);
122extern void hypervisor_tlbop_error(unsigned long err,
123 unsigned long op);
124extern void hypervisor_tlbop_error_xcall(unsigned long err,
125 unsigned long op);
126
127/* WARNING: The error trap handlers in assembly know the precise
128 * layout of the following structure.
129 *
130 * C-level handlers in traps.c use this information to log the
131 * error and then determine how to recover (if possible).
132 */
133struct cheetah_err_info {
134/*0x00*/u64 afsr;
135/*0x08*/u64 afar;
136
137 /* D-cache state */
138/*0x10*/u64 dcache_data[4]; /* The actual data */
139/*0x30*/u64 dcache_index; /* D-cache index */
140/*0x38*/u64 dcache_tag; /* D-cache tag/valid */
141/*0x40*/u64 dcache_utag; /* D-cache microtag */
142/*0x48*/u64 dcache_stag; /* D-cache snooptag */
143
144 /* I-cache state */
145/*0x50*/u64 icache_data[8]; /* The actual insns + predecode */
146/*0x90*/u64 icache_index; /* I-cache index */
147/*0x98*/u64 icache_tag; /* I-cache phys tag */
148/*0xa0*/u64 icache_utag; /* I-cache microtag */
149/*0xa8*/u64 icache_stag; /* I-cache snooptag */
150/*0xb0*/u64 icache_upper; /* I-cache upper-tag */
151/*0xb8*/u64 icache_lower; /* I-cache lower-tag */
152
153 /* E-cache state */
154/*0xc0*/u64 ecache_data[4]; /* 32 bytes from staging registers */
155/*0xe0*/u64 ecache_index; /* E-cache index */
156/*0xe8*/u64 ecache_tag; /* E-cache tag/state */
157
158/*0xf0*/u64 __pad[32 - 30];
159};
160#define CHAFSR_INVALID ((u64)-1L)
161
162/* This is allocated at boot time based upon the largest hardware
163 * cpu ID in the system. We allocate two entries per cpu, one for
164 * TL==0 logging and one for TL >= 1 logging.
165 */
166extern struct cheetah_err_info *cheetah_error_log;
167
168/* UPA nodes send interrupt packet to UltraSparc with first data reg
169 * value low 5 (7 on Starfire) bits holding the IRQ identifier being
170 * delivered. We must translate this into a non-vector IRQ so we can
171 * set the softint on this cpu.
172 *
173 * To make processing these packets efficient and race free we use
174 * an array of irq buckets below. The interrupt vector handler in
175 * entry.S feeds incoming packets into per-cpu pil-indexed lists.
176 *
177 * If you make changes to ino_bucket, please update hand coded assembler
178 * of the vectored interrupt trap handler(s) in entry.S and sun4v_ivec.S
179 */
180struct ino_bucket {
181/*0x00*/unsigned long __irq_chain_pa;
182
183 /* Virtual interrupt number assigned to this INO. */
184/*0x08*/unsigned int __virt_irq;
185/*0x0c*/unsigned int __pad;
186};
187
188extern struct ino_bucket *ivector_table;
189extern unsigned long ivector_table_pa;
190
191extern void handler_irq(int irq, struct pt_regs *regs);
192extern void init_irqwork_curcpu(void);
193extern void __cpuinit sun4v_register_mondo_queues(int this_cpu);
194
195#endif /* _ENTRY_H */
diff --git a/arch/sparc/kernel/etrap_64.S b/arch/sparc/kernel/etrap_64.S
new file mode 100644
index 000000000000..786b185e6e3f
--- /dev/null
+++ b/arch/sparc/kernel/etrap_64.S
@@ -0,0 +1,236 @@
1/*
2 * etrap.S: Preparing for entry into the kernel on Sparc V9.
3 *
4 * Copyright (C) 1996, 1997 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1997, 1998, 1999 Jakub Jelinek (jj@ultra.linux.cz)
6 */
7
8
9#include <asm/asi.h>
10#include <asm/pstate.h>
11#include <asm/ptrace.h>
12#include <asm/page.h>
13#include <asm/spitfire.h>
14#include <asm/head.h>
15#include <asm/processor.h>
16#include <asm/mmu.h>
17
18#define TASK_REGOFF (THREAD_SIZE-TRACEREG_SZ-STACKFRAME_SZ)
19#define ETRAP_PSTATE1 (PSTATE_TSO | PSTATE_PRIV)
20#define ETRAP_PSTATE2 \
21 (PSTATE_TSO | PSTATE_PEF | PSTATE_PRIV | PSTATE_IE)
22
23/*
24 * On entry, %g7 is return address - 0x4.
25 * %g4 and %g5 will be preserved %l4 and %l5 respectively.
26 */
27
28 .text
29 .align 64
30 .globl etrap_syscall, etrap, etrap_irq, etraptl1
31etrap: rdpr %pil, %g2
32etrap_irq: clr %g3
33etrap_syscall: TRAP_LOAD_THREAD_REG(%g6, %g1)
34 rdpr %tstate, %g1
35 or %g1, %g3, %g1
36 sllx %g2, 20, %g3
37 andcc %g1, TSTATE_PRIV, %g0
38 or %g1, %g3, %g1
39 bne,pn %xcc, 1f
40 sub %sp, STACKFRAME_SZ+TRACEREG_SZ-STACK_BIAS, %g2
41 wrpr %g0, 7, %cleanwin
42
43 sethi %hi(TASK_REGOFF), %g2
44 sethi %hi(TSTATE_PEF), %g3
45 or %g2, %lo(TASK_REGOFF), %g2
46 and %g1, %g3, %g3
47 brnz,pn %g3, 1f
48 add %g6, %g2, %g2
49 wr %g0, 0, %fprs
501: rdpr %tpc, %g3
51
52 stx %g1, [%g2 + STACKFRAME_SZ + PT_V9_TSTATE]
53 rdpr %tnpc, %g1
54 stx %g3, [%g2 + STACKFRAME_SZ + PT_V9_TPC]
55 rd %y, %g3
56 stx %g1, [%g2 + STACKFRAME_SZ + PT_V9_TNPC]
57 rdpr %tt, %g1
58 st %g3, [%g2 + STACKFRAME_SZ + PT_V9_Y]
59 sethi %hi(PT_REGS_MAGIC), %g3
60 or %g3, %g1, %g1
61 st %g1, [%g2 + STACKFRAME_SZ + PT_V9_MAGIC]
62
63 rdpr %cansave, %g1
64 brnz,pt %g1, etrap_save
65 nop
66
67 rdpr %cwp, %g1
68 add %g1, 2, %g1
69 wrpr %g1, %cwp
70 be,pt %xcc, etrap_user_spill
71 mov ASI_AIUP, %g3
72
73 rdpr %otherwin, %g3
74 brz %g3, etrap_kernel_spill
75 mov ASI_AIUS, %g3
76
77etrap_user_spill:
78
79 wr %g3, 0x0, %asi
80 ldx [%g6 + TI_FLAGS], %g3
81 and %g3, _TIF_32BIT, %g3
82 brnz,pt %g3, etrap_user_spill_32bit
83 nop
84 ba,a,pt %xcc, etrap_user_spill_64bit
85
86etrap_save: save %g2, -STACK_BIAS, %sp
87 mov %g6, %l6
88
89 bne,pn %xcc, 3f
90 mov PRIMARY_CONTEXT, %l4
91 rdpr %canrestore, %g3
92 rdpr %wstate, %g2
93 wrpr %g0, 0, %canrestore
94 sll %g2, 3, %g2
95 mov 1, %l5
96 stb %l5, [%l6 + TI_FPDEPTH]
97
98 wrpr %g3, 0, %otherwin
99 wrpr %g2, 0, %wstate
100 sethi %hi(sparc64_kern_pri_context), %g2
101 ldx [%g2 + %lo(sparc64_kern_pri_context)], %g3
102
103661: stxa %g3, [%l4] ASI_DMMU
104 .section .sun4v_1insn_patch, "ax"
105 .word 661b
106 stxa %g3, [%l4] ASI_MMU
107 .previous
108
109 sethi %hi(KERNBASE), %l4
110 flush %l4
111 mov ASI_AIUS, %l7
1122: mov %g4, %l4
113 mov %g5, %l5
114 add %g7, 4, %l2
115
116 /* Go to trap time globals so we can save them. */
117661: wrpr %g0, ETRAP_PSTATE1, %pstate
118 .section .sun4v_1insn_patch, "ax"
119 .word 661b
120 SET_GL(0)
121 .previous
122
123 stx %g1, [%sp + PTREGS_OFF + PT_V9_G1]
124 stx %g2, [%sp + PTREGS_OFF + PT_V9_G2]
125 sllx %l7, 24, %l7
126 stx %g3, [%sp + PTREGS_OFF + PT_V9_G3]
127 rdpr %cwp, %l0
128 stx %g4, [%sp + PTREGS_OFF + PT_V9_G4]
129 stx %g5, [%sp + PTREGS_OFF + PT_V9_G5]
130 stx %g6, [%sp + PTREGS_OFF + PT_V9_G6]
131 stx %g7, [%sp + PTREGS_OFF + PT_V9_G7]
132 or %l7, %l0, %l7
133 sethi %hi(TSTATE_TSO | TSTATE_PEF), %l0
134 or %l7, %l0, %l7
135 wrpr %l2, %tnpc
136 wrpr %l7, (TSTATE_PRIV | TSTATE_IE), %tstate
137 stx %i0, [%sp + PTREGS_OFF + PT_V9_I0]
138 stx %i1, [%sp + PTREGS_OFF + PT_V9_I1]
139 stx %i2, [%sp + PTREGS_OFF + PT_V9_I2]
140 stx %i3, [%sp + PTREGS_OFF + PT_V9_I3]
141 stx %i4, [%sp + PTREGS_OFF + PT_V9_I4]
142 stx %i5, [%sp + PTREGS_OFF + PT_V9_I5]
143 stx %i6, [%sp + PTREGS_OFF + PT_V9_I6]
144 mov %l6, %g6
145 stx %i7, [%sp + PTREGS_OFF + PT_V9_I7]
146 LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %l1)
147 ldx [%g6 + TI_TASK], %g4
148 done
149
1503: mov ASI_P, %l7
151 ldub [%l6 + TI_FPDEPTH], %l5
152 add %l6, TI_FPSAVED + 1, %l4
153 srl %l5, 1, %l3
154 add %l5, 2, %l5
155 stb %l5, [%l6 + TI_FPDEPTH]
156 ba,pt %xcc, 2b
157 stb %g0, [%l4 + %l3]
158 nop
159
160etraptl1: /* Save tstate/tpc/tnpc of TL 1-->4 and the tl register itself.
161 * We place this right after pt_regs on the trap stack.
162 * The layout is:
163 * 0x00 TL1's TSTATE
164 * 0x08 TL1's TPC
165 * 0x10 TL1's TNPC
166 * 0x18 TL1's TT
167 * ...
168 * 0x58 TL4's TT
169 * 0x60 TL
170 */
171 TRAP_LOAD_THREAD_REG(%g6, %g1)
172 sub %sp, ((4 * 8) * 4) + 8, %g2
173 rdpr %tl, %g1
174
175 wrpr %g0, 1, %tl
176 rdpr %tstate, %g3
177 stx %g3, [%g2 + STACK_BIAS + 0x00]
178 rdpr %tpc, %g3
179 stx %g3, [%g2 + STACK_BIAS + 0x08]
180 rdpr %tnpc, %g3
181 stx %g3, [%g2 + STACK_BIAS + 0x10]
182 rdpr %tt, %g3
183 stx %g3, [%g2 + STACK_BIAS + 0x18]
184
185 wrpr %g0, 2, %tl
186 rdpr %tstate, %g3
187 stx %g3, [%g2 + STACK_BIAS + 0x20]
188 rdpr %tpc, %g3
189 stx %g3, [%g2 + STACK_BIAS + 0x28]
190 rdpr %tnpc, %g3
191 stx %g3, [%g2 + STACK_BIAS + 0x30]
192 rdpr %tt, %g3
193 stx %g3, [%g2 + STACK_BIAS + 0x38]
194
195 sethi %hi(is_sun4v), %g3
196 lduw [%g3 + %lo(is_sun4v)], %g3
197 brnz,pn %g3, finish_tl1_capture
198 nop
199
200 wrpr %g0, 3, %tl
201 rdpr %tstate, %g3
202 stx %g3, [%g2 + STACK_BIAS + 0x40]
203 rdpr %tpc, %g3
204 stx %g3, [%g2 + STACK_BIAS + 0x48]
205 rdpr %tnpc, %g3
206 stx %g3, [%g2 + STACK_BIAS + 0x50]
207 rdpr %tt, %g3
208 stx %g3, [%g2 + STACK_BIAS + 0x58]
209
210 wrpr %g0, 4, %tl
211 rdpr %tstate, %g3
212 stx %g3, [%g2 + STACK_BIAS + 0x60]
213 rdpr %tpc, %g3
214 stx %g3, [%g2 + STACK_BIAS + 0x68]
215 rdpr %tnpc, %g3
216 stx %g3, [%g2 + STACK_BIAS + 0x70]
217 rdpr %tt, %g3
218 stx %g3, [%g2 + STACK_BIAS + 0x78]
219
220 stx %g1, [%g2 + STACK_BIAS + 0x80]
221
222finish_tl1_capture:
223 wrpr %g0, 1, %tl
224661: nop
225 .section .sun4v_1insn_patch, "ax"
226 .word 661b
227 SET_GL(1)
228 .previous
229
230 rdpr %tstate, %g1
231 sub %g2, STACKFRAME_SZ + TRACEREG_SZ - STACK_BIAS, %g2
232 ba,pt %xcc, 1b
233 andcc %g1, TSTATE_PRIV, %g0
234
235#undef TASK_REGOFF
236#undef ETRAP_PSTATE1
diff --git a/arch/sparc/kernel/fpu_traps.S b/arch/sparc/kernel/fpu_traps.S
new file mode 100644
index 000000000000..a6864826a4bd
--- /dev/null
+++ b/arch/sparc/kernel/fpu_traps.S
@@ -0,0 +1,384 @@
1 /* This is trivial with the new code... */
2 .globl do_fpdis
3 .type do_fpdis,#function
4do_fpdis:
5 sethi %hi(TSTATE_PEF), %g4
6 rdpr %tstate, %g5
7 andcc %g5, %g4, %g0
8 be,pt %xcc, 1f
9 nop
10 rd %fprs, %g5
11 andcc %g5, FPRS_FEF, %g0
12 be,pt %xcc, 1f
13 nop
14
15 /* Legal state when DCR_IFPOE is set in Cheetah %dcr. */
16 sethi %hi(109f), %g7
17 ba,pt %xcc, etrap
18109: or %g7, %lo(109b), %g7
19 add %g0, %g0, %g0
20 ba,a,pt %xcc, rtrap
21
221: TRAP_LOAD_THREAD_REG(%g6, %g1)
23 ldub [%g6 + TI_FPSAVED], %g5
24 wr %g0, FPRS_FEF, %fprs
25 andcc %g5, FPRS_FEF, %g0
26 be,a,pt %icc, 1f
27 clr %g7
28 ldx [%g6 + TI_GSR], %g7
291: andcc %g5, FPRS_DL, %g0
30 bne,pn %icc, 2f
31 fzero %f0
32 andcc %g5, FPRS_DU, %g0
33 bne,pn %icc, 1f
34 fzero %f2
35 faddd %f0, %f2, %f4
36 fmuld %f0, %f2, %f6
37 faddd %f0, %f2, %f8
38 fmuld %f0, %f2, %f10
39 faddd %f0, %f2, %f12
40 fmuld %f0, %f2, %f14
41 faddd %f0, %f2, %f16
42 fmuld %f0, %f2, %f18
43 faddd %f0, %f2, %f20
44 fmuld %f0, %f2, %f22
45 faddd %f0, %f2, %f24
46 fmuld %f0, %f2, %f26
47 faddd %f0, %f2, %f28
48 fmuld %f0, %f2, %f30
49 faddd %f0, %f2, %f32
50 fmuld %f0, %f2, %f34
51 faddd %f0, %f2, %f36
52 fmuld %f0, %f2, %f38
53 faddd %f0, %f2, %f40
54 fmuld %f0, %f2, %f42
55 faddd %f0, %f2, %f44
56 fmuld %f0, %f2, %f46
57 faddd %f0, %f2, %f48
58 fmuld %f0, %f2, %f50
59 faddd %f0, %f2, %f52
60 fmuld %f0, %f2, %f54
61 faddd %f0, %f2, %f56
62 fmuld %f0, %f2, %f58
63 b,pt %xcc, fpdis_exit2
64 faddd %f0, %f2, %f60
651: mov SECONDARY_CONTEXT, %g3
66 add %g6, TI_FPREGS + 0x80, %g1
67 faddd %f0, %f2, %f4
68 fmuld %f0, %f2, %f6
69
70661: ldxa [%g3] ASI_DMMU, %g5
71 .section .sun4v_1insn_patch, "ax"
72 .word 661b
73 ldxa [%g3] ASI_MMU, %g5
74 .previous
75
76 sethi %hi(sparc64_kern_sec_context), %g2
77 ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
78
79661: stxa %g2, [%g3] ASI_DMMU
80 .section .sun4v_1insn_patch, "ax"
81 .word 661b
82 stxa %g2, [%g3] ASI_MMU
83 .previous
84
85 membar #Sync
86 add %g6, TI_FPREGS + 0xc0, %g2
87 faddd %f0, %f2, %f8
88 fmuld %f0, %f2, %f10
89 membar #Sync
90 ldda [%g1] ASI_BLK_S, %f32
91 ldda [%g2] ASI_BLK_S, %f48
92 membar #Sync
93 faddd %f0, %f2, %f12
94 fmuld %f0, %f2, %f14
95 faddd %f0, %f2, %f16
96 fmuld %f0, %f2, %f18
97 faddd %f0, %f2, %f20
98 fmuld %f0, %f2, %f22
99 faddd %f0, %f2, %f24
100 fmuld %f0, %f2, %f26
101 faddd %f0, %f2, %f28
102 fmuld %f0, %f2, %f30
103 b,pt %xcc, fpdis_exit
104 nop
1052: andcc %g5, FPRS_DU, %g0
106 bne,pt %icc, 3f
107 fzero %f32
108 mov SECONDARY_CONTEXT, %g3
109 fzero %f34
110
111661: ldxa [%g3] ASI_DMMU, %g5
112 .section .sun4v_1insn_patch, "ax"
113 .word 661b
114 ldxa [%g3] ASI_MMU, %g5
115 .previous
116
117 add %g6, TI_FPREGS, %g1
118 sethi %hi(sparc64_kern_sec_context), %g2
119 ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
120
121661: stxa %g2, [%g3] ASI_DMMU
122 .section .sun4v_1insn_patch, "ax"
123 .word 661b
124 stxa %g2, [%g3] ASI_MMU
125 .previous
126
127 membar #Sync
128 add %g6, TI_FPREGS + 0x40, %g2
129 faddd %f32, %f34, %f36
130 fmuld %f32, %f34, %f38
131 membar #Sync
132 ldda [%g1] ASI_BLK_S, %f0
133 ldda [%g2] ASI_BLK_S, %f16
134 membar #Sync
135 faddd %f32, %f34, %f40
136 fmuld %f32, %f34, %f42
137 faddd %f32, %f34, %f44
138 fmuld %f32, %f34, %f46
139 faddd %f32, %f34, %f48
140 fmuld %f32, %f34, %f50
141 faddd %f32, %f34, %f52
142 fmuld %f32, %f34, %f54
143 faddd %f32, %f34, %f56
144 fmuld %f32, %f34, %f58
145 faddd %f32, %f34, %f60
146 fmuld %f32, %f34, %f62
147 ba,pt %xcc, fpdis_exit
148 nop
1493: mov SECONDARY_CONTEXT, %g3
150 add %g6, TI_FPREGS, %g1
151
152661: ldxa [%g3] ASI_DMMU, %g5
153 .section .sun4v_1insn_patch, "ax"
154 .word 661b
155 ldxa [%g3] ASI_MMU, %g5
156 .previous
157
158 sethi %hi(sparc64_kern_sec_context), %g2
159 ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
160
161661: stxa %g2, [%g3] ASI_DMMU
162 .section .sun4v_1insn_patch, "ax"
163 .word 661b
164 stxa %g2, [%g3] ASI_MMU
165 .previous
166
167 membar #Sync
168 mov 0x40, %g2
169 membar #Sync
170 ldda [%g1] ASI_BLK_S, %f0
171 ldda [%g1 + %g2] ASI_BLK_S, %f16
172 add %g1, 0x80, %g1
173 ldda [%g1] ASI_BLK_S, %f32
174 ldda [%g1 + %g2] ASI_BLK_S, %f48
175 membar #Sync
176fpdis_exit:
177
178661: stxa %g5, [%g3] ASI_DMMU
179 .section .sun4v_1insn_patch, "ax"
180 .word 661b
181 stxa %g5, [%g3] ASI_MMU
182 .previous
183
184 membar #Sync
185fpdis_exit2:
186 wr %g7, 0, %gsr
187 ldx [%g6 + TI_XFSR], %fsr
188 rdpr %tstate, %g3
189 or %g3, %g4, %g3 ! anal...
190 wrpr %g3, %tstate
191 wr %g0, FPRS_FEF, %fprs ! clean DU/DL bits
192 retry
193 .size do_fpdis,.-do_fpdis
194
195 .align 32
196 .type fp_other_bounce,#function
197fp_other_bounce:
198 call do_fpother
199 add %sp, PTREGS_OFF, %o0
200 ba,pt %xcc, rtrap
201 nop
202 .size fp_other_bounce,.-fp_other_bounce
203
204 .align 32
205 .globl do_fpother_check_fitos
206 .type do_fpother_check_fitos,#function
207do_fpother_check_fitos:
208 TRAP_LOAD_THREAD_REG(%g6, %g1)
209 sethi %hi(fp_other_bounce - 4), %g7
210 or %g7, %lo(fp_other_bounce - 4), %g7
211
212 /* NOTE: Need to preserve %g7 until we fully commit
213 * to the fitos fixup.
214 */
215 stx %fsr, [%g6 + TI_XFSR]
216 rdpr %tstate, %g3
217 andcc %g3, TSTATE_PRIV, %g0
218 bne,pn %xcc, do_fptrap_after_fsr
219 nop
220 ldx [%g6 + TI_XFSR], %g3
221 srlx %g3, 14, %g1
222 and %g1, 7, %g1
223 cmp %g1, 2 ! Unfinished FP-OP
224 bne,pn %xcc, do_fptrap_after_fsr
225 sethi %hi(1 << 23), %g1 ! Inexact
226 andcc %g3, %g1, %g0
227 bne,pn %xcc, do_fptrap_after_fsr
228 rdpr %tpc, %g1
229 lduwa [%g1] ASI_AIUP, %g3 ! This cannot ever fail
230#define FITOS_MASK 0xc1f83fe0
231#define FITOS_COMPARE 0x81a01880
232 sethi %hi(FITOS_MASK), %g1
233 or %g1, %lo(FITOS_MASK), %g1
234 and %g3, %g1, %g1
235 sethi %hi(FITOS_COMPARE), %g2
236 or %g2, %lo(FITOS_COMPARE), %g2
237 cmp %g1, %g2
238 bne,pn %xcc, do_fptrap_after_fsr
239 nop
240 std %f62, [%g6 + TI_FPREGS + (62 * 4)]
241 sethi %hi(fitos_table_1), %g1
242 and %g3, 0x1f, %g2
243 or %g1, %lo(fitos_table_1), %g1
244 sllx %g2, 2, %g2
245 jmpl %g1 + %g2, %g0
246 ba,pt %xcc, fitos_emul_continue
247
248fitos_table_1:
249 fitod %f0, %f62
250 fitod %f1, %f62
251 fitod %f2, %f62
252 fitod %f3, %f62
253 fitod %f4, %f62
254 fitod %f5, %f62
255 fitod %f6, %f62
256 fitod %f7, %f62
257 fitod %f8, %f62
258 fitod %f9, %f62
259 fitod %f10, %f62
260 fitod %f11, %f62
261 fitod %f12, %f62
262 fitod %f13, %f62
263 fitod %f14, %f62
264 fitod %f15, %f62
265 fitod %f16, %f62
266 fitod %f17, %f62
267 fitod %f18, %f62
268 fitod %f19, %f62
269 fitod %f20, %f62
270 fitod %f21, %f62
271 fitod %f22, %f62
272 fitod %f23, %f62
273 fitod %f24, %f62
274 fitod %f25, %f62
275 fitod %f26, %f62
276 fitod %f27, %f62
277 fitod %f28, %f62
278 fitod %f29, %f62
279 fitod %f30, %f62
280 fitod %f31, %f62
281
282fitos_emul_continue:
283 sethi %hi(fitos_table_2), %g1
284 srl %g3, 25, %g2
285 or %g1, %lo(fitos_table_2), %g1
286 and %g2, 0x1f, %g2
287 sllx %g2, 2, %g2
288 jmpl %g1 + %g2, %g0
289 ba,pt %xcc, fitos_emul_fini
290
291fitos_table_2:
292 fdtos %f62, %f0
293 fdtos %f62, %f1
294 fdtos %f62, %f2
295 fdtos %f62, %f3
296 fdtos %f62, %f4
297 fdtos %f62, %f5
298 fdtos %f62, %f6
299 fdtos %f62, %f7
300 fdtos %f62, %f8
301 fdtos %f62, %f9
302 fdtos %f62, %f10
303 fdtos %f62, %f11
304 fdtos %f62, %f12
305 fdtos %f62, %f13
306 fdtos %f62, %f14
307 fdtos %f62, %f15
308 fdtos %f62, %f16
309 fdtos %f62, %f17
310 fdtos %f62, %f18
311 fdtos %f62, %f19
312 fdtos %f62, %f20
313 fdtos %f62, %f21
314 fdtos %f62, %f22
315 fdtos %f62, %f23
316 fdtos %f62, %f24
317 fdtos %f62, %f25
318 fdtos %f62, %f26
319 fdtos %f62, %f27
320 fdtos %f62, %f28
321 fdtos %f62, %f29
322 fdtos %f62, %f30
323 fdtos %f62, %f31
324
325fitos_emul_fini:
326 ldd [%g6 + TI_FPREGS + (62 * 4)], %f62
327 done
328 .size do_fpother_check_fitos,.-do_fpother_check_fitos
329
330 .align 32
331 .globl do_fptrap
332 .type do_fptrap,#function
333do_fptrap:
334 TRAP_LOAD_THREAD_REG(%g6, %g1)
335 stx %fsr, [%g6 + TI_XFSR]
336do_fptrap_after_fsr:
337 ldub [%g6 + TI_FPSAVED], %g3
338 rd %fprs, %g1
339 or %g3, %g1, %g3
340 stb %g3, [%g6 + TI_FPSAVED]
341 rd %gsr, %g3
342 stx %g3, [%g6 + TI_GSR]
343 mov SECONDARY_CONTEXT, %g3
344
345661: ldxa [%g3] ASI_DMMU, %g5
346 .section .sun4v_1insn_patch, "ax"
347 .word 661b
348 ldxa [%g3] ASI_MMU, %g5
349 .previous
350
351 sethi %hi(sparc64_kern_sec_context), %g2
352 ldx [%g2 + %lo(sparc64_kern_sec_context)], %g2
353
354661: stxa %g2, [%g3] ASI_DMMU
355 .section .sun4v_1insn_patch, "ax"
356 .word 661b
357 stxa %g2, [%g3] ASI_MMU
358 .previous
359
360 membar #Sync
361 add %g6, TI_FPREGS, %g2
362 andcc %g1, FPRS_DL, %g0
363 be,pn %icc, 4f
364 mov 0x40, %g3
365 stda %f0, [%g2] ASI_BLK_S
366 stda %f16, [%g2 + %g3] ASI_BLK_S
367 andcc %g1, FPRS_DU, %g0
368 be,pn %icc, 5f
3694: add %g2, 128, %g2
370 stda %f32, [%g2] ASI_BLK_S
371 stda %f48, [%g2 + %g3] ASI_BLK_S
3725: mov SECONDARY_CONTEXT, %g1
373 membar #Sync
374
375661: stxa %g5, [%g1] ASI_DMMU
376 .section .sun4v_1insn_patch, "ax"
377 .word 661b
378 stxa %g5, [%g1] ASI_MMU
379 .previous
380
381 membar #Sync
382 ba,pt %xcc, etrap
383 wr %g0, 0, %fprs
384 .size do_fptrap,.-do_fptrap
diff --git a/arch/sparc/kernel/ftrace.c b/arch/sparc/kernel/ftrace.c
new file mode 100644
index 000000000000..d0218e73f982
--- /dev/null
+++ b/arch/sparc/kernel/ftrace.c
@@ -0,0 +1,76 @@
1#include <linux/spinlock.h>
2#include <linux/hardirq.h>
3#include <linux/ftrace.h>
4#include <linux/percpu.h>
5#include <linux/init.h>
6#include <linux/list.h>
7
8#include <asm/ftrace.h>
9
10static const u32 ftrace_nop = 0x01000000;
11
12unsigned char *ftrace_nop_replace(void)
13{
14 return (char *)&ftrace_nop;
15}
16
17unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr)
18{
19 static u32 call;
20 s32 off;
21
22 off = ((s32)addr - (s32)ip);
23 call = 0x40000000 | ((u32)off >> 2);
24
25 return (unsigned char *) &call;
26}
27
28int
29ftrace_modify_code(unsigned long ip, unsigned char *old_code,
30 unsigned char *new_code)
31{
32 u32 old = *(u32 *)old_code;
33 u32 new = *(u32 *)new_code;
34 u32 replaced;
35 int faulted;
36
37 __asm__ __volatile__(
38 "1: cas [%[ip]], %[old], %[new]\n"
39 " flush %[ip]\n"
40 " mov 0, %[faulted]\n"
41 "2:\n"
42 " .section .fixup,#alloc,#execinstr\n"
43 " .align 4\n"
44 "3: sethi %%hi(2b), %[faulted]\n"
45 " jmpl %[faulted] + %%lo(2b), %%g0\n"
46 " mov 1, %[faulted]\n"
47 " .previous\n"
48 " .section __ex_table,\"a\"\n"
49 " .align 4\n"
50 " .word 1b, 3b\n"
51 " .previous\n"
52 : "=r" (replaced), [faulted] "=r" (faulted)
53 : [new] "0" (new), [old] "r" (old), [ip] "r" (ip)
54 : "memory");
55
56 if (replaced != old && replaced != new)
57 faulted = 2;
58
59 return faulted;
60}
61
62int ftrace_update_ftrace_func(ftrace_func_t func)
63{
64 unsigned long ip = (unsigned long)(&ftrace_call);
65 unsigned char old[MCOUNT_INSN_SIZE], *new;
66
67 memcpy(old, &ftrace_call, MCOUNT_INSN_SIZE);
68 new = ftrace_call_replace(ip, (unsigned long)func);
69 return ftrace_modify_code(ip, old, new);
70}
71
72int __init ftrace_dyn_arch_init(void *data)
73{
74 ftrace_mcount_set(data);
75 return 0;
76}
diff --git a/arch/sparc/kernel/getsetcc.S b/arch/sparc/kernel/getsetcc.S
new file mode 100644
index 000000000000..a14d272d2061
--- /dev/null
+++ b/arch/sparc/kernel/getsetcc.S
@@ -0,0 +1,24 @@
1 .globl getcc
2 .type getcc,#function
3getcc:
4 ldx [%o0 + PT_V9_TSTATE], %o1
5 srlx %o1, 32, %o1
6 and %o1, 0xf, %o1
7 retl
8 stx %o1, [%o0 + PT_V9_G1]
9 .size getcc,.-getcc
10
11 .globl setcc
12 .type setcc,#function
13setcc:
14 ldx [%o0 + PT_V9_TSTATE], %o1
15 ldx [%o0 + PT_V9_G1], %o2
16 or %g0, %ulo(TSTATE_ICC), %o3
17 sllx %o3, 32, %o3
18 andn %o1, %o3, %o1
19 sllx %o2, 32, %o2
20 and %o2, %o3, %o2
21 or %o1, %o2, %o1
22 retl
23 stx %o1, [%o0 + PT_V9_TSTATE]
24 .size setcc,.-setcc
diff --git a/arch/sparc/kernel/head_64.S b/arch/sparc/kernel/head_64.S
new file mode 100644
index 000000000000..8ffee714f932
--- /dev/null
+++ b/arch/sparc/kernel/head_64.S
@@ -0,0 +1,900 @@
1/* head.S: Initial boot code for the Sparc64 port of Linux.
2 *
3 * Copyright (C) 1996, 1997, 2007 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1996 David Sitsky (David.Sitsky@anu.edu.au)
5 * Copyright (C) 1997, 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 * Copyright (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx)
7 */
8
9#include <linux/version.h>
10#include <linux/errno.h>
11#include <linux/threads.h>
12#include <linux/init.h>
13#include <linux/linkage.h>
14#include <asm/thread_info.h>
15#include <asm/asi.h>
16#include <asm/pstate.h>
17#include <asm/ptrace.h>
18#include <asm/spitfire.h>
19#include <asm/page.h>
20#include <asm/pgtable.h>
21#include <asm/errno.h>
22#include <asm/signal.h>
23#include <asm/processor.h>
24#include <asm/lsu.h>
25#include <asm/dcr.h>
26#include <asm/dcu.h>
27#include <asm/head.h>
28#include <asm/ttable.h>
29#include <asm/mmu.h>
30#include <asm/cpudata.h>
31#include <asm/pil.h>
32#include <asm/estate.h>
33#include <asm/sfafsr.h>
34#include <asm/unistd.h>
35
36/* This section from from _start to sparc64_boot_end should fit into
37 * 0x0000000000404000 to 0x0000000000408000.
38 */
39 .text
40 .globl start, _start, stext, _stext
41_start:
42start:
43_stext:
44stext:
45! 0x0000000000404000
46 b sparc64_boot
47 flushw /* Flush register file. */
48
49/* This stuff has to be in sync with SILO and other potential boot loaders
50 * Fields should be kept upward compatible and whenever any change is made,
51 * HdrS version should be incremented.
52 */
53 .global root_flags, ram_flags, root_dev
54 .global sparc_ramdisk_image, sparc_ramdisk_size
55 .global sparc_ramdisk_image64
56
57 .ascii "HdrS"
58 .word LINUX_VERSION_CODE
59
60 /* History:
61 *
62 * 0x0300 : Supports being located at other than 0x4000
63 * 0x0202 : Supports kernel params string
64 * 0x0201 : Supports reboot_command
65 */
66 .half 0x0301 /* HdrS version */
67
68root_flags:
69 .half 1
70root_dev:
71 .half 0
72ram_flags:
73 .half 0
74sparc_ramdisk_image:
75 .word 0
76sparc_ramdisk_size:
77 .word 0
78 .xword reboot_command
79 .xword bootstr_info
80sparc_ramdisk_image64:
81 .xword 0
82 .word _end
83
84 /* PROM cif handler code address is in %o4. */
85sparc64_boot:
86 mov %o4, %l7
87
88 /* We need to remap the kernel. Use position independant
89 * code to remap us to KERNBASE.
90 *
91 * SILO can invoke us with 32-bit address masking enabled,
92 * so make sure that's clear.
93 */
94 rdpr %pstate, %g1
95 andn %g1, PSTATE_AM, %g1
96 wrpr %g1, 0x0, %pstate
97 ba,a,pt %xcc, 1f
98
99 .globl prom_finddev_name, prom_chosen_path, prom_root_node
100 .globl prom_getprop_name, prom_mmu_name, prom_peer_name
101 .globl prom_callmethod_name, prom_translate_name, prom_root_compatible
102 .globl prom_map_name, prom_unmap_name, prom_mmu_ihandle_cache
103 .globl prom_boot_mapped_pc, prom_boot_mapping_mode
104 .globl prom_boot_mapping_phys_high, prom_boot_mapping_phys_low
105 .globl prom_compatible_name, prom_cpu_path, prom_cpu_compatible
106 .globl is_sun4v, sun4v_chip_type, prom_set_trap_table_name
107prom_peer_name:
108 .asciz "peer"
109prom_compatible_name:
110 .asciz "compatible"
111prom_finddev_name:
112 .asciz "finddevice"
113prom_chosen_path:
114 .asciz "/chosen"
115prom_cpu_path:
116 .asciz "/cpu"
117prom_getprop_name:
118 .asciz "getprop"
119prom_mmu_name:
120 .asciz "mmu"
121prom_callmethod_name:
122 .asciz "call-method"
123prom_translate_name:
124 .asciz "translate"
125prom_map_name:
126 .asciz "map"
127prom_unmap_name:
128 .asciz "unmap"
129prom_set_trap_table_name:
130 .asciz "SUNW,set-trap-table"
131prom_sun4v_name:
132 .asciz "sun4v"
133prom_niagara_prefix:
134 .asciz "SUNW,UltraSPARC-T"
135 .align 4
136prom_root_compatible:
137 .skip 64
138prom_cpu_compatible:
139 .skip 64
140prom_root_node:
141 .word 0
142prom_mmu_ihandle_cache:
143 .word 0
144prom_boot_mapped_pc:
145 .word 0
146prom_boot_mapping_mode:
147 .word 0
148 .align 8
149prom_boot_mapping_phys_high:
150 .xword 0
151prom_boot_mapping_phys_low:
152 .xword 0
153is_sun4v:
154 .word 0
155sun4v_chip_type:
156 .word SUN4V_CHIP_INVALID
1571:
158 rd %pc, %l0
159
160 mov (1b - prom_peer_name), %l1
161 sub %l0, %l1, %l1
162 mov 0, %l2
163
164 /* prom_root_node = prom_peer(0) */
165 stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "peer"
166 mov 1, %l3
167 stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 1
168 stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
169 stx %l2, [%sp + 2047 + 128 + 0x18] ! arg1, 0
170 stx %g0, [%sp + 2047 + 128 + 0x20] ! ret1
171 call %l7
172 add %sp, (2047 + 128), %o0 ! argument array
173
174 ldx [%sp + 2047 + 128 + 0x20], %l4 ! prom root node
175 mov (1b - prom_root_node), %l1
176 sub %l0, %l1, %l1
177 stw %l4, [%l1]
178
179 mov (1b - prom_getprop_name), %l1
180 mov (1b - prom_compatible_name), %l2
181 mov (1b - prom_root_compatible), %l5
182 sub %l0, %l1, %l1
183 sub %l0, %l2, %l2
184 sub %l0, %l5, %l5
185
186 /* prom_getproperty(prom_root_node, "compatible",
187 * &prom_root_compatible, 64)
188 */
189 stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "getprop"
190 mov 4, %l3
191 stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 4
192 mov 1, %l3
193 stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
194 stx %l4, [%sp + 2047 + 128 + 0x18] ! arg1, prom_root_node
195 stx %l2, [%sp + 2047 + 128 + 0x20] ! arg2, "compatible"
196 stx %l5, [%sp + 2047 + 128 + 0x28] ! arg3, &prom_root_compatible
197 mov 64, %l3
198 stx %l3, [%sp + 2047 + 128 + 0x30] ! arg4, size
199 stx %g0, [%sp + 2047 + 128 + 0x38] ! ret1
200 call %l7
201 add %sp, (2047 + 128), %o0 ! argument array
202
203 mov (1b - prom_finddev_name), %l1
204 mov (1b - prom_chosen_path), %l2
205 mov (1b - prom_boot_mapped_pc), %l3
206 sub %l0, %l1, %l1
207 sub %l0, %l2, %l2
208 sub %l0, %l3, %l3
209 stw %l0, [%l3]
210 sub %sp, (192 + 128), %sp
211
212 /* chosen_node = prom_finddevice("/chosen") */
213 stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "finddevice"
214 mov 1, %l3
215 stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 1
216 stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
217 stx %l2, [%sp + 2047 + 128 + 0x18] ! arg1, "/chosen"
218 stx %g0, [%sp + 2047 + 128 + 0x20] ! ret1
219 call %l7
220 add %sp, (2047 + 128), %o0 ! argument array
221
222 ldx [%sp + 2047 + 128 + 0x20], %l4 ! chosen device node
223
224 mov (1b - prom_getprop_name), %l1
225 mov (1b - prom_mmu_name), %l2
226 mov (1b - prom_mmu_ihandle_cache), %l5
227 sub %l0, %l1, %l1
228 sub %l0, %l2, %l2
229 sub %l0, %l5, %l5
230
231 /* prom_mmu_ihandle_cache = prom_getint(chosen_node, "mmu") */
232 stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "getprop"
233 mov 4, %l3
234 stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 4
235 mov 1, %l3
236 stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
237 stx %l4, [%sp + 2047 + 128 + 0x18] ! arg1, chosen_node
238 stx %l2, [%sp + 2047 + 128 + 0x20] ! arg2, "mmu"
239 stx %l5, [%sp + 2047 + 128 + 0x28] ! arg3, &prom_mmu_ihandle_cache
240 mov 4, %l3
241 stx %l3, [%sp + 2047 + 128 + 0x30] ! arg4, sizeof(arg3)
242 stx %g0, [%sp + 2047 + 128 + 0x38] ! ret1
243 call %l7
244 add %sp, (2047 + 128), %o0 ! argument array
245
246 mov (1b - prom_callmethod_name), %l1
247 mov (1b - prom_translate_name), %l2
248 sub %l0, %l1, %l1
249 sub %l0, %l2, %l2
250 lduw [%l5], %l5 ! prom_mmu_ihandle_cache
251
252 stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "call-method"
253 mov 3, %l3
254 stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 3
255 mov 5, %l3
256 stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 5
257 stx %l2, [%sp + 2047 + 128 + 0x18] ! arg1: "translate"
258 stx %l5, [%sp + 2047 + 128 + 0x20] ! arg2: prom_mmu_ihandle_cache
259 /* PAGE align */
260 srlx %l0, 13, %l3
261 sllx %l3, 13, %l3
262 stx %l3, [%sp + 2047 + 128 + 0x28] ! arg3: vaddr, our PC
263 stx %g0, [%sp + 2047 + 128 + 0x30] ! res1
264 stx %g0, [%sp + 2047 + 128 + 0x38] ! res2
265 stx %g0, [%sp + 2047 + 128 + 0x40] ! res3
266 stx %g0, [%sp + 2047 + 128 + 0x48] ! res4
267 stx %g0, [%sp + 2047 + 128 + 0x50] ! res5
268 call %l7
269 add %sp, (2047 + 128), %o0 ! argument array
270
271 ldx [%sp + 2047 + 128 + 0x40], %l1 ! translation mode
272 mov (1b - prom_boot_mapping_mode), %l4
273 sub %l0, %l4, %l4
274 stw %l1, [%l4]
275 mov (1b - prom_boot_mapping_phys_high), %l4
276 sub %l0, %l4, %l4
277 ldx [%sp + 2047 + 128 + 0x48], %l2 ! physaddr high
278 stx %l2, [%l4 + 0x0]
279 ldx [%sp + 2047 + 128 + 0x50], %l3 ! physaddr low
280 /* 4MB align */
281 srlx %l3, 22, %l3
282 sllx %l3, 22, %l3
283 stx %l3, [%l4 + 0x8]
284
285 /* Leave service as-is, "call-method" */
286 mov 7, %l3
287 stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 7
288 mov 1, %l3
289 stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
290 mov (1b - prom_map_name), %l3
291 sub %l0, %l3, %l3
292 stx %l3, [%sp + 2047 + 128 + 0x18] ! arg1: "map"
293 /* Leave arg2 as-is, prom_mmu_ihandle_cache */
294 mov -1, %l3
295 stx %l3, [%sp + 2047 + 128 + 0x28] ! arg3: mode (-1 default)
296 /* 4MB align the kernel image size. */
297 set (_end - KERNBASE), %l3
298 set ((4 * 1024 * 1024) - 1), %l4
299 add %l3, %l4, %l3
300 andn %l3, %l4, %l3
301 stx %l3, [%sp + 2047 + 128 + 0x30] ! arg4: roundup(ksize, 4MB)
302 sethi %hi(KERNBASE), %l3
303 stx %l3, [%sp + 2047 + 128 + 0x38] ! arg5: vaddr (KERNBASE)
304 stx %g0, [%sp + 2047 + 128 + 0x40] ! arg6: empty
305 mov (1b - prom_boot_mapping_phys_low), %l3
306 sub %l0, %l3, %l3
307 ldx [%l3], %l3
308 stx %l3, [%sp + 2047 + 128 + 0x48] ! arg7: phys addr
309 call %l7
310 add %sp, (2047 + 128), %o0 ! argument array
311
312 add %sp, (192 + 128), %sp
313
314 sethi %hi(prom_root_compatible), %g1
315 or %g1, %lo(prom_root_compatible), %g1
316 sethi %hi(prom_sun4v_name), %g7
317 or %g7, %lo(prom_sun4v_name), %g7
318 mov 5, %g3
31990: ldub [%g7], %g2
320 ldub [%g1], %g4
321 cmp %g2, %g4
322 bne,pn %icc, 80f
323 add %g7, 1, %g7
324 subcc %g3, 1, %g3
325 bne,pt %xcc, 90b
326 add %g1, 1, %g1
327
328 sethi %hi(is_sun4v), %g1
329 or %g1, %lo(is_sun4v), %g1
330 mov 1, %g7
331 stw %g7, [%g1]
332
333 /* cpu_node = prom_finddevice("/cpu") */
334 mov (1b - prom_finddev_name), %l1
335 mov (1b - prom_cpu_path), %l2
336 sub %l0, %l1, %l1
337 sub %l0, %l2, %l2
338 sub %sp, (192 + 128), %sp
339
340 stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "finddevice"
341 mov 1, %l3
342 stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 1
343 stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
344 stx %l2, [%sp + 2047 + 128 + 0x18] ! arg1, "/cpu"
345 stx %g0, [%sp + 2047 + 128 + 0x20] ! ret1
346 call %l7
347 add %sp, (2047 + 128), %o0 ! argument array
348
349 ldx [%sp + 2047 + 128 + 0x20], %l4 ! cpu device node
350
351 mov (1b - prom_getprop_name), %l1
352 mov (1b - prom_compatible_name), %l2
353 mov (1b - prom_cpu_compatible), %l5
354 sub %l0, %l1, %l1
355 sub %l0, %l2, %l2
356 sub %l0, %l5, %l5
357
358 /* prom_getproperty(cpu_node, "compatible",
359 * &prom_cpu_compatible, 64)
360 */
361 stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "getprop"
362 mov 4, %l3
363 stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 4
364 mov 1, %l3
365 stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
366 stx %l4, [%sp + 2047 + 128 + 0x18] ! arg1, cpu_node
367 stx %l2, [%sp + 2047 + 128 + 0x20] ! arg2, "compatible"
368 stx %l5, [%sp + 2047 + 128 + 0x28] ! arg3, &prom_cpu_compatible
369 mov 64, %l3
370 stx %l3, [%sp + 2047 + 128 + 0x30] ! arg4, size
371 stx %g0, [%sp + 2047 + 128 + 0x38] ! ret1
372 call %l7
373 add %sp, (2047 + 128), %o0 ! argument array
374
375 add %sp, (192 + 128), %sp
376
377 sethi %hi(prom_cpu_compatible), %g1
378 or %g1, %lo(prom_cpu_compatible), %g1
379 sethi %hi(prom_niagara_prefix), %g7
380 or %g7, %lo(prom_niagara_prefix), %g7
381 mov 17, %g3
38290: ldub [%g7], %g2
383 ldub [%g1], %g4
384 cmp %g2, %g4
385 bne,pn %icc, 4f
386 add %g7, 1, %g7
387 subcc %g3, 1, %g3
388 bne,pt %xcc, 90b
389 add %g1, 1, %g1
390
391 sethi %hi(prom_cpu_compatible), %g1
392 or %g1, %lo(prom_cpu_compatible), %g1
393 ldub [%g1 + 17], %g2
394 cmp %g2, '1'
395 be,pt %xcc, 5f
396 mov SUN4V_CHIP_NIAGARA1, %g4
397 cmp %g2, '2'
398 be,pt %xcc, 5f
399 mov SUN4V_CHIP_NIAGARA2, %g4
4004:
401 mov SUN4V_CHIP_UNKNOWN, %g4
4025: sethi %hi(sun4v_chip_type), %g2
403 or %g2, %lo(sun4v_chip_type), %g2
404 stw %g4, [%g2]
405
40680:
407 BRANCH_IF_SUN4V(g1, jump_to_sun4u_init)
408 BRANCH_IF_CHEETAH_BASE(g1,g7,cheetah_boot)
409 BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1,g7,cheetah_plus_boot)
410 ba,pt %xcc, spitfire_boot
411 nop
412
413cheetah_plus_boot:
414 /* Preserve OBP chosen DCU and DCR register settings. */
415 ba,pt %xcc, cheetah_generic_boot
416 nop
417
418cheetah_boot:
419 mov DCR_BPE | DCR_RPE | DCR_SI | DCR_IFPOE | DCR_MS, %g1
420 wr %g1, %asr18
421
422 sethi %uhi(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g7
423 or %g7, %ulo(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g7
424 sllx %g7, 32, %g7
425 or %g7, DCU_DM | DCU_IM | DCU_DC | DCU_IC, %g7
426 stxa %g7, [%g0] ASI_DCU_CONTROL_REG
427 membar #Sync
428
429cheetah_generic_boot:
430 mov TSB_EXTENSION_P, %g3
431 stxa %g0, [%g3] ASI_DMMU
432 stxa %g0, [%g3] ASI_IMMU
433 membar #Sync
434
435 mov TSB_EXTENSION_S, %g3
436 stxa %g0, [%g3] ASI_DMMU
437 membar #Sync
438
439 mov TSB_EXTENSION_N, %g3
440 stxa %g0, [%g3] ASI_DMMU
441 stxa %g0, [%g3] ASI_IMMU
442 membar #Sync
443
444 ba,a,pt %xcc, jump_to_sun4u_init
445
446spitfire_boot:
447 /* Typically PROM has already enabled both MMU's and both on-chip
448 * caches, but we do it here anyway just to be paranoid.
449 */
450 mov (LSU_CONTROL_IC|LSU_CONTROL_DC|LSU_CONTROL_IM|LSU_CONTROL_DM), %g1
451 stxa %g1, [%g0] ASI_LSU_CONTROL
452 membar #Sync
453
454jump_to_sun4u_init:
455 /*
456 * Make sure we are in privileged mode, have address masking,
457 * using the ordinary globals and have enabled floating
458 * point.
459 *
460 * Again, typically PROM has left %pil at 13 or similar, and
461 * (PSTATE_PRIV | PSTATE_PEF | PSTATE_IE) in %pstate.
462 */
463 wrpr %g0, (PSTATE_PRIV|PSTATE_PEF|PSTATE_IE), %pstate
464 wr %g0, 0, %fprs
465
466 set sun4u_init, %g2
467 jmpl %g2 + %g0, %g0
468 nop
469
470 .section .text.init.refok
471sun4u_init:
472 BRANCH_IF_SUN4V(g1, sun4v_init)
473
474 /* Set ctx 0 */
475 mov PRIMARY_CONTEXT, %g7
476 stxa %g0, [%g7] ASI_DMMU
477 membar #Sync
478
479 mov SECONDARY_CONTEXT, %g7
480 stxa %g0, [%g7] ASI_DMMU
481 membar #Sync
482
483 ba,pt %xcc, sun4u_continue
484 nop
485
486sun4v_init:
487 /* Set ctx 0 */
488 mov PRIMARY_CONTEXT, %g7
489 stxa %g0, [%g7] ASI_MMU
490 membar #Sync
491
492 mov SECONDARY_CONTEXT, %g7
493 stxa %g0, [%g7] ASI_MMU
494 membar #Sync
495 ba,pt %xcc, niagara_tlb_fixup
496 nop
497
498sun4u_continue:
499 BRANCH_IF_ANY_CHEETAH(g1, g7, cheetah_tlb_fixup)
500
501 ba,pt %xcc, spitfire_tlb_fixup
502 nop
503
504niagara_tlb_fixup:
505 mov 3, %g2 /* Set TLB type to hypervisor. */
506 sethi %hi(tlb_type), %g1
507 stw %g2, [%g1 + %lo(tlb_type)]
508
509 /* Patch copy/clear ops. */
510 sethi %hi(sun4v_chip_type), %g1
511 lduw [%g1 + %lo(sun4v_chip_type)], %g1
512 cmp %g1, SUN4V_CHIP_NIAGARA1
513 be,pt %xcc, niagara_patch
514 cmp %g1, SUN4V_CHIP_NIAGARA2
515 be,pt %xcc, niagara2_patch
516 nop
517
518 call generic_patch_copyops
519 nop
520 call generic_patch_bzero
521 nop
522 call generic_patch_pageops
523 nop
524
525 ba,a,pt %xcc, 80f
526niagara2_patch:
527 call niagara2_patch_copyops
528 nop
529 call niagara_patch_bzero
530 nop
531 call niagara2_patch_pageops
532 nop
533
534 ba,a,pt %xcc, 80f
535
536niagara_patch:
537 call niagara_patch_copyops
538 nop
539 call niagara_patch_bzero
540 nop
541 call niagara_patch_pageops
542 nop
543
54480:
545 /* Patch TLB/cache ops. */
546 call hypervisor_patch_cachetlbops
547 nop
548
549 ba,pt %xcc, tlb_fixup_done
550 nop
551
552cheetah_tlb_fixup:
553 mov 2, %g2 /* Set TLB type to cheetah+. */
554 BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1,g7,1f)
555
556 mov 1, %g2 /* Set TLB type to cheetah. */
557
5581: sethi %hi(tlb_type), %g1
559 stw %g2, [%g1 + %lo(tlb_type)]
560
561 /* Patch copy/page operations to cheetah optimized versions. */
562 call cheetah_patch_copyops
563 nop
564 call cheetah_patch_copy_page
565 nop
566 call cheetah_patch_cachetlbops
567 nop
568
569 ba,pt %xcc, tlb_fixup_done
570 nop
571
572spitfire_tlb_fixup:
573 /* Set TLB type to spitfire. */
574 mov 0, %g2
575 sethi %hi(tlb_type), %g1
576 stw %g2, [%g1 + %lo(tlb_type)]
577
578tlb_fixup_done:
579 sethi %hi(init_thread_union), %g6
580 or %g6, %lo(init_thread_union), %g6
581 ldx [%g6 + TI_TASK], %g4
582 mov %sp, %l6
583
584 wr %g0, ASI_P, %asi
585 mov 1, %g1
586 sllx %g1, THREAD_SHIFT, %g1
587 sub %g1, (STACKFRAME_SZ + STACK_BIAS), %g1
588 add %g6, %g1, %sp
589 mov 0, %fp
590
591 /* Set per-cpu pointer initially to zero, this makes
592 * the boot-cpu use the in-kernel-image per-cpu areas
593 * before setup_per_cpu_area() is invoked.
594 */
595 clr %g5
596
597 wrpr %g0, 0, %wstate
598 wrpr %g0, 0x0, %tl
599
600 /* Clear the bss */
601 sethi %hi(__bss_start), %o0
602 or %o0, %lo(__bss_start), %o0
603 sethi %hi(_end), %o1
604 or %o1, %lo(_end), %o1
605 call __bzero
606 sub %o1, %o0, %o1
607
608#ifdef CONFIG_LOCKDEP
609 /* We have this call this super early, as even prom_init can grab
610 * spinlocks and thus call into the lockdep code.
611 */
612 call lockdep_init
613 nop
614#endif
615
616 mov %l6, %o1 ! OpenPROM stack
617 call prom_init
618 mov %l7, %o0 ! OpenPROM cif handler
619
620 /* Initialize current_thread_info()->cpu as early as possible.
621 * In order to do that accurately we have to patch up the get_cpuid()
622 * assembler sequences. And that, in turn, requires that we know
623 * if we are on a Starfire box or not. While we're here, patch up
624 * the sun4v sequences as well.
625 */
626 call check_if_starfire
627 nop
628 call per_cpu_patch
629 nop
630 call sun4v_patch
631 nop
632
633#ifdef CONFIG_SMP
634 call hard_smp_processor_id
635 nop
636 cmp %o0, NR_CPUS
637 blu,pt %xcc, 1f
638 nop
639 call boot_cpu_id_too_large
640 nop
641 /* Not reached... */
642
6431:
644 /* If we boot on a non-zero cpu, all of the per-cpu
645 * variable references we make before setting up the
646 * per-cpu areas will use a bogus offset. Put a
647 * compensating factor into __per_cpu_base to handle
648 * this cleanly.
649 *
650 * What the per-cpu code calculates is:
651 *
652 * __per_cpu_base + (cpu << __per_cpu_shift)
653 *
654 * These two variables are zero initially, so to
655 * make it all cancel out to zero we need to put
656 * "0 - (cpu << 0)" into __per_cpu_base so that the
657 * above formula evaluates to zero.
658 *
659 * We cannot even perform a printk() until this stuff
660 * is setup as that calls cpu_clock() which uses
661 * per-cpu variables.
662 */
663 sub %g0, %o0, %o1
664 sethi %hi(__per_cpu_base), %o2
665 stx %o1, [%o2 + %lo(__per_cpu_base)]
666#else
667 mov 0, %o0
668#endif
669 sth %o0, [%g6 + TI_CPU]
670
671 call prom_init_report
672 nop
673
674 /* Off we go.... */
675 call start_kernel
676 nop
677 /* Not reached... */
678
679 .previous
680
681 /* This is meant to allow the sharing of this code between
682 * boot processor invocation (via setup_tba() below) and
683 * secondary processor startup (via trampoline.S). The
684 * former does use this code, the latter does not yet due
685 * to some complexities. That should be fixed up at some
686 * point.
687 *
688 * There used to be enormous complexity wrt. transferring
689 * over from the firwmare's trap table to the Linux kernel's.
690 * For example, there was a chicken & egg problem wrt. building
691 * the OBP page tables, yet needing to be on the Linux kernel
692 * trap table (to translate PAGE_OFFSET addresses) in order to
693 * do that.
694 *
695 * We now handle OBP tlb misses differently, via linear lookups
696 * into the prom_trans[] array. So that specific problem no
697 * longer exists. Yet, unfortunately there are still some issues
698 * preventing trampoline.S from using this code... ho hum.
699 */
700 .globl setup_trap_table
701setup_trap_table:
702 save %sp, -192, %sp
703
704 /* Force interrupts to be disabled. */
705 rdpr %pstate, %l0
706 andn %l0, PSTATE_IE, %o1
707 wrpr %o1, 0x0, %pstate
708 rdpr %pil, %l1
709 wrpr %g0, PIL_NORMAL_MAX, %pil
710
711 /* Make the firmware call to jump over to the Linux trap table. */
712 sethi %hi(is_sun4v), %o0
713 lduw [%o0 + %lo(is_sun4v)], %o0
714 brz,pt %o0, 1f
715 nop
716
717 TRAP_LOAD_TRAP_BLOCK(%g2, %g3)
718 add %g2, TRAP_PER_CPU_FAULT_INFO, %g2
719 stxa %g2, [%g0] ASI_SCRATCHPAD
720
721 /* Compute physical address:
722 *
723 * paddr = kern_base + (mmfsa_vaddr - KERNBASE)
724 */
725 sethi %hi(KERNBASE), %g3
726 sub %g2, %g3, %g2
727 sethi %hi(kern_base), %g3
728 ldx [%g3 + %lo(kern_base)], %g3
729 add %g2, %g3, %o1
730 sethi %hi(sparc64_ttable_tl0), %o0
731
732 set prom_set_trap_table_name, %g2
733 stx %g2, [%sp + 2047 + 128 + 0x00]
734 mov 2, %g2
735 stx %g2, [%sp + 2047 + 128 + 0x08]
736 mov 0, %g2
737 stx %g2, [%sp + 2047 + 128 + 0x10]
738 stx %o0, [%sp + 2047 + 128 + 0x18]
739 stx %o1, [%sp + 2047 + 128 + 0x20]
740 sethi %hi(p1275buf), %g2
741 or %g2, %lo(p1275buf), %g2
742 ldx [%g2 + 0x08], %o1
743 call %o1
744 add %sp, (2047 + 128), %o0
745
746 ba,pt %xcc, 2f
747 nop
748
7491: sethi %hi(sparc64_ttable_tl0), %o0
750 set prom_set_trap_table_name, %g2
751 stx %g2, [%sp + 2047 + 128 + 0x00]
752 mov 1, %g2
753 stx %g2, [%sp + 2047 + 128 + 0x08]
754 mov 0, %g2
755 stx %g2, [%sp + 2047 + 128 + 0x10]
756 stx %o0, [%sp + 2047 + 128 + 0x18]
757 sethi %hi(p1275buf), %g2
758 or %g2, %lo(p1275buf), %g2
759 ldx [%g2 + 0x08], %o1
760 call %o1
761 add %sp, (2047 + 128), %o0
762
763 /* Start using proper page size encodings in ctx register. */
7642: sethi %hi(sparc64_kern_pri_context), %g3
765 ldx [%g3 + %lo(sparc64_kern_pri_context)], %g2
766
767 mov PRIMARY_CONTEXT, %g1
768
769661: stxa %g2, [%g1] ASI_DMMU
770 .section .sun4v_1insn_patch, "ax"
771 .word 661b
772 stxa %g2, [%g1] ASI_MMU
773 .previous
774
775 membar #Sync
776
777 BRANCH_IF_SUN4V(o2, 1f)
778
779 /* Kill PROM timer */
780 sethi %hi(0x80000000), %o2
781 sllx %o2, 32, %o2
782 wr %o2, 0, %tick_cmpr
783
784 BRANCH_IF_ANY_CHEETAH(o2, o3, 1f)
785
786 ba,pt %xcc, 2f
787 nop
788
789 /* Disable STICK_INT interrupts. */
7901:
791 sethi %hi(0x80000000), %o2
792 sllx %o2, 32, %o2
793 wr %o2, %asr25
794
7952:
796 wrpr %g0, %g0, %wstate
797
798 call init_irqwork_curcpu
799 nop
800
801 /* Now we can restore interrupt state. */
802 wrpr %l0, 0, %pstate
803 wrpr %l1, 0x0, %pil
804
805 ret
806 restore
807
808 .globl setup_tba
809setup_tba:
810 save %sp, -192, %sp
811
812 /* The boot processor is the only cpu which invokes this
813 * routine, the other cpus set things up via trampoline.S.
814 * So save the OBP trap table address here.
815 */
816 rdpr %tba, %g7
817 sethi %hi(prom_tba), %o1
818 or %o1, %lo(prom_tba), %o1
819 stx %g7, [%o1]
820
821 call setup_trap_table
822 nop
823
824 ret
825 restore
826sparc64_boot_end:
827
828#include "etrap_64.S"
829#include "rtrap_64.S"
830#include "winfixup.S"
831#include "fpu_traps.S"
832#include "ivec.S"
833#include "getsetcc.S"
834#include "utrap.S"
835#include "spiterrs.S"
836#include "cherrs.S"
837#include "misctrap.S"
838#include "syscalls.S"
839#include "helpers.S"
840#include "hvcalls.S"
841#include "sun4v_tlb_miss.S"
842#include "sun4v_ivec.S"
843#include "ktlb.S"
844#include "tsb.S"
845
846/*
847 * The following skip makes sure the trap table in ttable.S is aligned
848 * on a 32K boundary as required by the v9 specs for TBA register.
849 *
850 * We align to a 32K boundary, then we have the 32K kernel TSB,
851 * the 64K kernel 4MB TSB, and then the 32K aligned trap table.
852 */
8531:
854 .skip 0x4000 + _start - 1b
855
856! 0x0000000000408000
857
858 .globl swapper_tsb
859swapper_tsb:
860 .skip (32 * 1024)
861
862 .globl swapper_4m_tsb
863swapper_4m_tsb:
864 .skip (64 * 1024)
865
866! 0x0000000000420000
867
868 /* Some care needs to be exercised if you try to move the
869 * location of the trap table relative to other things. For
870 * one thing there are br* instructions in some of the
871 * trap table entires which branch back to code in ktlb.S
872 * Those instructions can only handle a signed 16-bit
873 * displacement.
874 *
875 * There is a binutils bug (bugzilla #4558) which causes
876 * the relocation overflow checks for such instructions to
877 * not be done correctly. So bintuils will not notice the
878 * error and will instead write junk into the relocation and
879 * you'll have an unbootable kernel.
880 */
881#include "ttable.S"
882
883! 0x0000000000428000
884
885#include "systbls_64.S"
886
887 .data
888 .align 8
889 .globl prom_tba, tlb_type
890prom_tba: .xword 0
891tlb_type: .word 0 /* Must NOT end up in BSS */
892 .section ".fixup",#alloc,#execinstr
893
894 .globl __ret_efault, __retl_efault
895__ret_efault:
896 ret
897 restore %g0, -EFAULT, %o0
898__retl_efault:
899 retl
900 mov -EFAULT, %o0
diff --git a/arch/sparc/kernel/helpers.S b/arch/sparc/kernel/helpers.S
new file mode 100644
index 000000000000..314dd0c9fc5b
--- /dev/null
+++ b/arch/sparc/kernel/helpers.S
@@ -0,0 +1,63 @@
1 .align 32
2 .globl __flushw_user
3 .type __flushw_user,#function
4__flushw_user:
5 rdpr %otherwin, %g1
6 brz,pn %g1, 2f
7 clr %g2
81: save %sp, -128, %sp
9 rdpr %otherwin, %g1
10 brnz,pt %g1, 1b
11 add %g2, 1, %g2
121: sub %g2, 1, %g2
13 brnz,pt %g2, 1b
14 restore %g0, %g0, %g0
152: retl
16 nop
17 .size __flushw_user,.-__flushw_user
18
19 /* Flush %fp and %i7 to the stack for all register
20 * windows active inside of the cpu. This allows
21 * show_stack_trace() to avoid using an expensive
22 * 'flushw'.
23 */
24 .globl stack_trace_flush
25 .type stack_trace_flush,#function
26stack_trace_flush:
27 rdpr %pstate, %o0
28 wrpr %o0, PSTATE_IE, %pstate
29
30 rdpr %cwp, %g1
31 rdpr %canrestore, %g2
32 sub %g1, 1, %g3
33
341: brz,pn %g2, 2f
35 sub %g2, 1, %g2
36 wrpr %g3, %cwp
37 stx %fp, [%sp + STACK_BIAS + RW_V9_I6]
38 stx %i7, [%sp + STACK_BIAS + RW_V9_I7]
39 ba,pt %xcc, 1b
40 sub %g3, 1, %g3
41
422: wrpr %g1, %cwp
43 wrpr %o0, %pstate
44
45 retl
46 nop
47 .size stack_trace_flush,.-stack_trace_flush
48
49#ifdef CONFIG_SMP
50 .globl hard_smp_processor_id
51 .type hard_smp_processor_id,#function
52hard_smp_processor_id:
53#endif
54 .globl real_hard_smp_processor_id
55 .type real_hard_smp_processor_id,#function
56real_hard_smp_processor_id:
57 __GET_CPUID(%o0)
58 retl
59 nop
60#ifdef CONFIG_SMP
61 .size hard_smp_processor_id,.-hard_smp_processor_id
62#endif
63 .size real_hard_smp_processor_id,.-real_hard_smp_processor_id
diff --git a/arch/sparc/kernel/hvapi.c b/arch/sparc/kernel/hvapi.c
new file mode 100644
index 000000000000..1d272c3b5740
--- /dev/null
+++ b/arch/sparc/kernel/hvapi.c
@@ -0,0 +1,193 @@
1/* hvapi.c: Hypervisor API management.
2 *
3 * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
4 */
5#include <linux/kernel.h>
6#include <linux/module.h>
7#include <linux/init.h>
8#include <linux/slab.h>
9
10#include <asm/hypervisor.h>
11#include <asm/oplib.h>
12
13/* If the hypervisor indicates that the API setting
14 * calls are unsupported, by returning HV_EBADTRAP or
15 * HV_ENOTSUPPORTED, we assume that API groups with the
16 * PRE_API flag set are major 1 minor 0.
17 */
18struct api_info {
19 unsigned long group;
20 unsigned long major;
21 unsigned long minor;
22 unsigned int refcnt;
23 unsigned int flags;
24#define FLAG_PRE_API 0x00000001
25};
26
27static struct api_info api_table[] = {
28 { .group = HV_GRP_SUN4V, .flags = FLAG_PRE_API },
29 { .group = HV_GRP_CORE, .flags = FLAG_PRE_API },
30 { .group = HV_GRP_INTR, },
31 { .group = HV_GRP_SOFT_STATE, },
32 { .group = HV_GRP_PCI, .flags = FLAG_PRE_API },
33 { .group = HV_GRP_LDOM, },
34 { .group = HV_GRP_SVC_CHAN, .flags = FLAG_PRE_API },
35 { .group = HV_GRP_NCS, .flags = FLAG_PRE_API },
36 { .group = HV_GRP_RNG, },
37 { .group = HV_GRP_NIAG_PERF, .flags = FLAG_PRE_API },
38 { .group = HV_GRP_FIRE_PERF, },
39 { .group = HV_GRP_N2_CPU, },
40 { .group = HV_GRP_NIU, },
41 { .group = HV_GRP_VF_CPU, },
42 { .group = HV_GRP_DIAG, .flags = FLAG_PRE_API },
43};
44
45static DEFINE_SPINLOCK(hvapi_lock);
46
47static struct api_info *__get_info(unsigned long group)
48{
49 int i;
50
51 for (i = 0; i < ARRAY_SIZE(api_table); i++) {
52 if (api_table[i].group == group)
53 return &api_table[i];
54 }
55 return NULL;
56}
57
58static void __get_ref(struct api_info *p)
59{
60 p->refcnt++;
61}
62
63static void __put_ref(struct api_info *p)
64{
65 if (--p->refcnt == 0) {
66 unsigned long ignore;
67
68 sun4v_set_version(p->group, 0, 0, &ignore);
69 p->major = p->minor = 0;
70 }
71}
72
73/* Register a hypervisor API specification. It indicates the
74 * API group and desired major+minor.
75 *
76 * If an existing API registration exists '0' (success) will
77 * be returned if it is compatible with the one being registered.
78 * Otherwise a negative error code will be returned.
79 *
80 * Otherwise an attempt will be made to negotiate the requested
81 * API group/major/minor with the hypervisor, and errors returned
82 * if that does not succeed.
83 */
84int sun4v_hvapi_register(unsigned long group, unsigned long major,
85 unsigned long *minor)
86{
87 struct api_info *p;
88 unsigned long flags;
89 int ret;
90
91 spin_lock_irqsave(&hvapi_lock, flags);
92 p = __get_info(group);
93 ret = -EINVAL;
94 if (p) {
95 if (p->refcnt) {
96 ret = -EINVAL;
97 if (p->major == major) {
98 *minor = p->minor;
99 ret = 0;
100 }
101 } else {
102 unsigned long actual_minor;
103 unsigned long hv_ret;
104
105 hv_ret = sun4v_set_version(group, major, *minor,
106 &actual_minor);
107 ret = -EINVAL;
108 if (hv_ret == HV_EOK) {
109 *minor = actual_minor;
110 p->major = major;
111 p->minor = actual_minor;
112 ret = 0;
113 } else if (hv_ret == HV_EBADTRAP ||
114 hv_ret == HV_ENOTSUPPORTED) {
115 if (p->flags & FLAG_PRE_API) {
116 if (major == 1) {
117 p->major = 1;
118 p->minor = 0;
119 *minor = 0;
120 ret = 0;
121 }
122 }
123 }
124 }
125
126 if (ret == 0)
127 __get_ref(p);
128 }
129 spin_unlock_irqrestore(&hvapi_lock, flags);
130
131 return ret;
132}
133EXPORT_SYMBOL(sun4v_hvapi_register);
134
135void sun4v_hvapi_unregister(unsigned long group)
136{
137 struct api_info *p;
138 unsigned long flags;
139
140 spin_lock_irqsave(&hvapi_lock, flags);
141 p = __get_info(group);
142 if (p)
143 __put_ref(p);
144 spin_unlock_irqrestore(&hvapi_lock, flags);
145}
146EXPORT_SYMBOL(sun4v_hvapi_unregister);
147
148int sun4v_hvapi_get(unsigned long group,
149 unsigned long *major,
150 unsigned long *minor)
151{
152 struct api_info *p;
153 unsigned long flags;
154 int ret;
155
156 spin_lock_irqsave(&hvapi_lock, flags);
157 ret = -EINVAL;
158 p = __get_info(group);
159 if (p && p->refcnt) {
160 *major = p->major;
161 *minor = p->minor;
162 ret = 0;
163 }
164 spin_unlock_irqrestore(&hvapi_lock, flags);
165
166 return ret;
167}
168EXPORT_SYMBOL(sun4v_hvapi_get);
169
170void __init sun4v_hvapi_init(void)
171{
172 unsigned long group, major, minor;
173
174 group = HV_GRP_SUN4V;
175 major = 1;
176 minor = 0;
177 if (sun4v_hvapi_register(group, major, &minor))
178 goto bad;
179
180 group = HV_GRP_CORE;
181 major = 1;
182 minor = 1;
183 if (sun4v_hvapi_register(group, major, &minor))
184 goto bad;
185
186 return;
187
188bad:
189 prom_printf("HVAPI: Cannot register API group "
190 "%lx with major(%u) minor(%u)\n",
191 group, major, minor);
192 prom_halt();
193}
diff --git a/arch/sparc/kernel/hvcalls.S b/arch/sparc/kernel/hvcalls.S
new file mode 100644
index 000000000000..8a5f35ffb15e
--- /dev/null
+++ b/arch/sparc/kernel/hvcalls.S
@@ -0,0 +1,800 @@
1 /* %o0: devhandle
2 * %o1: devino
3 *
4 * returns %o0: sysino
5 */
6ENTRY(sun4v_devino_to_sysino)
7 mov HV_FAST_INTR_DEVINO2SYSINO, %o5
8 ta HV_FAST_TRAP
9 retl
10 mov %o1, %o0
11ENDPROC(sun4v_devino_to_sysino)
12
13 /* %o0: sysino
14 *
15 * returns %o0: intr_enabled (HV_INTR_{DISABLED,ENABLED})
16 */
17ENTRY(sun4v_intr_getenabled)
18 mov HV_FAST_INTR_GETENABLED, %o5
19 ta HV_FAST_TRAP
20 retl
21 mov %o1, %o0
22ENDPROC(sun4v_intr_getenabled)
23
24 /* %o0: sysino
25 * %o1: intr_enabled (HV_INTR_{DISABLED,ENABLED})
26 */
27ENTRY(sun4v_intr_setenabled)
28 mov HV_FAST_INTR_SETENABLED, %o5
29 ta HV_FAST_TRAP
30 retl
31 nop
32ENDPROC(sun4v_intr_setenabled)
33
34 /* %o0: sysino
35 *
36 * returns %o0: intr_state (HV_INTR_STATE_*)
37 */
38ENTRY(sun4v_intr_getstate)
39 mov HV_FAST_INTR_GETSTATE, %o5
40 ta HV_FAST_TRAP
41 retl
42 mov %o1, %o0
43ENDPROC(sun4v_intr_getstate)
44
45 /* %o0: sysino
46 * %o1: intr_state (HV_INTR_STATE_*)
47 */
48ENTRY(sun4v_intr_setstate)
49 mov HV_FAST_INTR_SETSTATE, %o5
50 ta HV_FAST_TRAP
51 retl
52 nop
53ENDPROC(sun4v_intr_setstate)
54
55 /* %o0: sysino
56 *
57 * returns %o0: cpuid
58 */
59ENTRY(sun4v_intr_gettarget)
60 mov HV_FAST_INTR_GETTARGET, %o5
61 ta HV_FAST_TRAP
62 retl
63 mov %o1, %o0
64ENDPROC(sun4v_intr_gettarget)
65
66 /* %o0: sysino
67 * %o1: cpuid
68 */
69ENTRY(sun4v_intr_settarget)
70 mov HV_FAST_INTR_SETTARGET, %o5
71 ta HV_FAST_TRAP
72 retl
73 nop
74ENDPROC(sun4v_intr_settarget)
75
76 /* %o0: cpuid
77 * %o1: pc
78 * %o2: rtba
79 * %o3: arg0
80 *
81 * returns %o0: status
82 */
83ENTRY(sun4v_cpu_start)
84 mov HV_FAST_CPU_START, %o5
85 ta HV_FAST_TRAP
86 retl
87 nop
88ENDPROC(sun4v_cpu_start)
89
90 /* %o0: cpuid
91 *
92 * returns %o0: status
93 */
94ENTRY(sun4v_cpu_stop)
95 mov HV_FAST_CPU_STOP, %o5
96 ta HV_FAST_TRAP
97 retl
98 nop
99ENDPROC(sun4v_cpu_stop)
100
101 /* returns %o0: status */
102ENTRY(sun4v_cpu_yield)
103 mov HV_FAST_CPU_YIELD, %o5
104 ta HV_FAST_TRAP
105 retl
106 nop
107ENDPROC(sun4v_cpu_yield)
108
109 /* %o0: type
110 * %o1: queue paddr
111 * %o2: num queue entries
112 *
113 * returns %o0: status
114 */
115ENTRY(sun4v_cpu_qconf)
116 mov HV_FAST_CPU_QCONF, %o5
117 ta HV_FAST_TRAP
118 retl
119 nop
120ENDPROC(sun4v_cpu_qconf)
121
122 /* %o0: num cpus in cpu list
123 * %o1: cpu list paddr
124 * %o2: mondo block paddr
125 *
126 * returns %o0: status
127 */
128ENTRY(sun4v_cpu_mondo_send)
129 mov HV_FAST_CPU_MONDO_SEND, %o5
130 ta HV_FAST_TRAP
131 retl
132 nop
133ENDPROC(sun4v_cpu_mondo_send)
134
135 /* %o0: CPU ID
136 *
137 * returns %o0: -status if status non-zero, else
138 * %o0: cpu state as HV_CPU_STATE_*
139 */
140ENTRY(sun4v_cpu_state)
141 mov HV_FAST_CPU_STATE, %o5
142 ta HV_FAST_TRAP
143 brnz,pn %o0, 1f
144 sub %g0, %o0, %o0
145 mov %o1, %o0
1461: retl
147 nop
148ENDPROC(sun4v_cpu_state)
149
150 /* %o0: virtual address
151 * %o1: must be zero
152 * %o2: TTE
153 * %o3: HV_MMU_* flags
154 *
155 * returns %o0: status
156 */
157ENTRY(sun4v_mmu_map_perm_addr)
158 mov HV_FAST_MMU_MAP_PERM_ADDR, %o5
159 ta HV_FAST_TRAP
160 retl
161 nop
162ENDPROC(sun4v_mmu_map_perm_addr)
163
164 /* %o0: number of TSB descriptions
165 * %o1: TSB descriptions real address
166 *
167 * returns %o0: status
168 */
169ENTRY(sun4v_mmu_tsb_ctx0)
170 mov HV_FAST_MMU_TSB_CTX0, %o5
171 ta HV_FAST_TRAP
172 retl
173 nop
174ENDPROC(sun4v_mmu_tsb_ctx0)
175
176 /* %o0: API group number
177 * %o1: pointer to unsigned long major number storage
178 * %o2: pointer to unsigned long minor number storage
179 *
180 * returns %o0: status
181 */
182ENTRY(sun4v_get_version)
183 mov HV_CORE_GET_VER, %o5
184 mov %o1, %o3
185 mov %o2, %o4
186 ta HV_CORE_TRAP
187 stx %o1, [%o3]
188 retl
189 stx %o2, [%o4]
190ENDPROC(sun4v_get_version)
191
192 /* %o0: API group number
193 * %o1: desired major number
194 * %o2: desired minor number
195 * %o3: pointer to unsigned long actual minor number storage
196 *
197 * returns %o0: status
198 */
199ENTRY(sun4v_set_version)
200 mov HV_CORE_SET_VER, %o5
201 mov %o3, %o4
202 ta HV_CORE_TRAP
203 retl
204 stx %o1, [%o4]
205ENDPROC(sun4v_set_version)
206
207 /* %o0: pointer to unsigned long time
208 *
209 * returns %o0: status
210 */
211ENTRY(sun4v_tod_get)
212 mov %o0, %o4
213 mov HV_FAST_TOD_GET, %o5
214 ta HV_FAST_TRAP
215 stx %o1, [%o4]
216 retl
217 nop
218ENDPROC(sun4v_tod_get)
219
220 /* %o0: time
221 *
222 * returns %o0: status
223 */
224ENTRY(sun4v_tod_set)
225 mov HV_FAST_TOD_SET, %o5
226 ta HV_FAST_TRAP
227 retl
228 nop
229ENDPROC(sun4v_tod_set)
230
231 /* %o0: pointer to unsigned long status
232 *
233 * returns %o0: signed character
234 */
235ENTRY(sun4v_con_getchar)
236 mov %o0, %o4
237 mov HV_FAST_CONS_GETCHAR, %o5
238 clr %o0
239 clr %o1
240 ta HV_FAST_TRAP
241 stx %o0, [%o4]
242 retl
243 sra %o1, 0, %o0
244ENDPROC(sun4v_con_getchar)
245
246 /* %o0: signed long character
247 *
248 * returns %o0: status
249 */
250ENTRY(sun4v_con_putchar)
251 mov HV_FAST_CONS_PUTCHAR, %o5
252 ta HV_FAST_TRAP
253 retl
254 sra %o0, 0, %o0
255ENDPROC(sun4v_con_putchar)
256
257 /* %o0: buffer real address
258 * %o1: buffer size
259 * %o2: pointer to unsigned long bytes_read
260 *
261 * returns %o0: status
262 */
263ENTRY(sun4v_con_read)
264 mov %o2, %o4
265 mov HV_FAST_CONS_READ, %o5
266 ta HV_FAST_TRAP
267 brnz %o0, 1f
268 cmp %o1, -1 /* break */
269 be,a,pn %icc, 1f
270 mov %o1, %o0
271 cmp %o1, -2 /* hup */
272 be,a,pn %icc, 1f
273 mov %o1, %o0
274 stx %o1, [%o4]
2751: retl
276 nop
277ENDPROC(sun4v_con_read)
278
279 /* %o0: buffer real address
280 * %o1: buffer size
281 * %o2: pointer to unsigned long bytes_written
282 *
283 * returns %o0: status
284 */
285ENTRY(sun4v_con_write)
286 mov %o2, %o4
287 mov HV_FAST_CONS_WRITE, %o5
288 ta HV_FAST_TRAP
289 stx %o1, [%o4]
290 retl
291 nop
292ENDPROC(sun4v_con_write)
293
294 /* %o0: soft state
295 * %o1: address of description string
296 *
297 * returns %o0: status
298 */
299ENTRY(sun4v_mach_set_soft_state)
300 mov HV_FAST_MACH_SET_SOFT_STATE, %o5
301 ta HV_FAST_TRAP
302 retl
303 nop
304ENDPROC(sun4v_mach_set_soft_state)
305
306 /* %o0: exit code
307 *
308 * Does not return.
309 */
310ENTRY(sun4v_mach_exit)
311 mov HV_FAST_MACH_EXIT, %o5
312 ta HV_FAST_TRAP
313 retl
314 nop
315ENDPROC(sun4v_mach_exit)
316
317 /* %o0: buffer real address
318 * %o1: buffer length
319 * %o2: pointer to unsigned long real_buf_len
320 *
321 * returns %o0: status
322 */
323ENTRY(sun4v_mach_desc)
324 mov %o2, %o4
325 mov HV_FAST_MACH_DESC, %o5
326 ta HV_FAST_TRAP
327 stx %o1, [%o4]
328 retl
329 nop
330ENDPROC(sun4v_mach_desc)
331
332 /* %o0: new timeout in milliseconds
333 * %o1: pointer to unsigned long orig_timeout
334 *
335 * returns %o0: status
336 */
337ENTRY(sun4v_mach_set_watchdog)
338 mov %o1, %o4
339 mov HV_FAST_MACH_SET_WATCHDOG, %o5
340 ta HV_FAST_TRAP
341 stx %o1, [%o4]
342 retl
343 nop
344ENDPROC(sun4v_mach_set_watchdog)
345
346 /* No inputs and does not return. */
347ENTRY(sun4v_mach_sir)
348 mov %o1, %o4
349 mov HV_FAST_MACH_SIR, %o5
350 ta HV_FAST_TRAP
351 stx %o1, [%o4]
352 retl
353 nop
354ENDPROC(sun4v_mach_sir)
355
356 /* %o0: channel
357 * %o1: ra
358 * %o2: num_entries
359 *
360 * returns %o0: status
361 */
362ENTRY(sun4v_ldc_tx_qconf)
363 mov HV_FAST_LDC_TX_QCONF, %o5
364 ta HV_FAST_TRAP
365 retl
366 nop
367ENDPROC(sun4v_ldc_tx_qconf)
368
369 /* %o0: channel
370 * %o1: pointer to unsigned long ra
371 * %o2: pointer to unsigned long num_entries
372 *
373 * returns %o0: status
374 */
375ENTRY(sun4v_ldc_tx_qinfo)
376 mov %o1, %g1
377 mov %o2, %g2
378 mov HV_FAST_LDC_TX_QINFO, %o5
379 ta HV_FAST_TRAP
380 stx %o1, [%g1]
381 stx %o2, [%g2]
382 retl
383 nop
384ENDPROC(sun4v_ldc_tx_qinfo)
385
386 /* %o0: channel
387 * %o1: pointer to unsigned long head_off
388 * %o2: pointer to unsigned long tail_off
389 * %o2: pointer to unsigned long chan_state
390 *
391 * returns %o0: status
392 */
393ENTRY(sun4v_ldc_tx_get_state)
394 mov %o1, %g1
395 mov %o2, %g2
396 mov %o3, %g3
397 mov HV_FAST_LDC_TX_GET_STATE, %o5
398 ta HV_FAST_TRAP
399 stx %o1, [%g1]
400 stx %o2, [%g2]
401 stx %o3, [%g3]
402 retl
403 nop
404ENDPROC(sun4v_ldc_tx_get_state)
405
406 /* %o0: channel
407 * %o1: tail_off
408 *
409 * returns %o0: status
410 */
411ENTRY(sun4v_ldc_tx_set_qtail)
412 mov HV_FAST_LDC_TX_SET_QTAIL, %o5
413 ta HV_FAST_TRAP
414 retl
415 nop
416ENDPROC(sun4v_ldc_tx_set_qtail)
417
418 /* %o0: channel
419 * %o1: ra
420 * %o2: num_entries
421 *
422 * returns %o0: status
423 */
424ENTRY(sun4v_ldc_rx_qconf)
425 mov HV_FAST_LDC_RX_QCONF, %o5
426 ta HV_FAST_TRAP
427 retl
428 nop
429ENDPROC(sun4v_ldc_rx_qconf)
430
431 /* %o0: channel
432 * %o1: pointer to unsigned long ra
433 * %o2: pointer to unsigned long num_entries
434 *
435 * returns %o0: status
436 */
437ENTRY(sun4v_ldc_rx_qinfo)
438 mov %o1, %g1
439 mov %o2, %g2
440 mov HV_FAST_LDC_RX_QINFO, %o5
441 ta HV_FAST_TRAP
442 stx %o1, [%g1]
443 stx %o2, [%g2]
444 retl
445 nop
446ENDPROC(sun4v_ldc_rx_qinfo)
447
448 /* %o0: channel
449 * %o1: pointer to unsigned long head_off
450 * %o2: pointer to unsigned long tail_off
451 * %o2: pointer to unsigned long chan_state
452 *
453 * returns %o0: status
454 */
455ENTRY(sun4v_ldc_rx_get_state)
456 mov %o1, %g1
457 mov %o2, %g2
458 mov %o3, %g3
459 mov HV_FAST_LDC_RX_GET_STATE, %o5
460 ta HV_FAST_TRAP
461 stx %o1, [%g1]
462 stx %o2, [%g2]
463 stx %o3, [%g3]
464 retl
465 nop
466ENDPROC(sun4v_ldc_rx_get_state)
467
468 /* %o0: channel
469 * %o1: head_off
470 *
471 * returns %o0: status
472 */
473ENTRY(sun4v_ldc_rx_set_qhead)
474 mov HV_FAST_LDC_RX_SET_QHEAD, %o5
475 ta HV_FAST_TRAP
476 retl
477 nop
478ENDPROC(sun4v_ldc_rx_set_qhead)
479
480 /* %o0: channel
481 * %o1: ra
482 * %o2: num_entries
483 *
484 * returns %o0: status
485 */
486ENTRY(sun4v_ldc_set_map_table)
487 mov HV_FAST_LDC_SET_MAP_TABLE, %o5
488 ta HV_FAST_TRAP
489 retl
490 nop
491ENDPROC(sun4v_ldc_set_map_table)
492
493 /* %o0: channel
494 * %o1: pointer to unsigned long ra
495 * %o2: pointer to unsigned long num_entries
496 *
497 * returns %o0: status
498 */
499ENTRY(sun4v_ldc_get_map_table)
500 mov %o1, %g1
501 mov %o2, %g2
502 mov HV_FAST_LDC_GET_MAP_TABLE, %o5
503 ta HV_FAST_TRAP
504 stx %o1, [%g1]
505 stx %o2, [%g2]
506 retl
507 nop
508ENDPROC(sun4v_ldc_get_map_table)
509
510 /* %o0: channel
511 * %o1: dir_code
512 * %o2: tgt_raddr
513 * %o3: lcl_raddr
514 * %o4: len
515 * %o5: pointer to unsigned long actual_len
516 *
517 * returns %o0: status
518 */
519ENTRY(sun4v_ldc_copy)
520 mov %o5, %g1
521 mov HV_FAST_LDC_COPY, %o5
522 ta HV_FAST_TRAP
523 stx %o1, [%g1]
524 retl
525 nop
526ENDPROC(sun4v_ldc_copy)
527
528 /* %o0: channel
529 * %o1: cookie
530 * %o2: pointer to unsigned long ra
531 * %o3: pointer to unsigned long perm
532 *
533 * returns %o0: status
534 */
535ENTRY(sun4v_ldc_mapin)
536 mov %o2, %g1
537 mov %o3, %g2
538 mov HV_FAST_LDC_MAPIN, %o5
539 ta HV_FAST_TRAP
540 stx %o1, [%g1]
541 stx %o2, [%g2]
542 retl
543 nop
544ENDPROC(sun4v_ldc_mapin)
545
546 /* %o0: ra
547 *
548 * returns %o0: status
549 */
550ENTRY(sun4v_ldc_unmap)
551 mov HV_FAST_LDC_UNMAP, %o5
552 ta HV_FAST_TRAP
553 retl
554 nop
555ENDPROC(sun4v_ldc_unmap)
556
557 /* %o0: channel
558 * %o1: cookie
559 * %o2: mte_cookie
560 *
561 * returns %o0: status
562 */
563ENTRY(sun4v_ldc_revoke)
564 mov HV_FAST_LDC_REVOKE, %o5
565 ta HV_FAST_TRAP
566 retl
567 nop
568ENDPROC(sun4v_ldc_revoke)
569
570 /* %o0: device handle
571 * %o1: device INO
572 * %o2: pointer to unsigned long cookie
573 *
574 * returns %o0: status
575 */
576ENTRY(sun4v_vintr_get_cookie)
577 mov %o2, %g1
578 mov HV_FAST_VINTR_GET_COOKIE, %o5
579 ta HV_FAST_TRAP
580 stx %o1, [%g1]
581 retl
582 nop
583ENDPROC(sun4v_vintr_get_cookie)
584
585 /* %o0: device handle
586 * %o1: device INO
587 * %o2: cookie
588 *
589 * returns %o0: status
590 */
591ENTRY(sun4v_vintr_set_cookie)
592 mov HV_FAST_VINTR_SET_COOKIE, %o5
593 ta HV_FAST_TRAP
594 retl
595 nop
596ENDPROC(sun4v_vintr_set_cookie)
597
598 /* %o0: device handle
599 * %o1: device INO
600 * %o2: pointer to unsigned long valid_state
601 *
602 * returns %o0: status
603 */
604ENTRY(sun4v_vintr_get_valid)
605 mov %o2, %g1
606 mov HV_FAST_VINTR_GET_VALID, %o5
607 ta HV_FAST_TRAP
608 stx %o1, [%g1]
609 retl
610 nop
611ENDPROC(sun4v_vintr_get_valid)
612
613 /* %o0: device handle
614 * %o1: device INO
615 * %o2: valid_state
616 *
617 * returns %o0: status
618 */
619ENTRY(sun4v_vintr_set_valid)
620 mov HV_FAST_VINTR_SET_VALID, %o5
621 ta HV_FAST_TRAP
622 retl
623 nop
624ENDPROC(sun4v_vintr_set_valid)
625
626 /* %o0: device handle
627 * %o1: device INO
628 * %o2: pointer to unsigned long state
629 *
630 * returns %o0: status
631 */
632ENTRY(sun4v_vintr_get_state)
633 mov %o2, %g1
634 mov HV_FAST_VINTR_GET_STATE, %o5
635 ta HV_FAST_TRAP
636 stx %o1, [%g1]
637 retl
638 nop
639ENDPROC(sun4v_vintr_get_state)
640
641 /* %o0: device handle
642 * %o1: device INO
643 * %o2: state
644 *
645 * returns %o0: status
646 */
647ENTRY(sun4v_vintr_set_state)
648 mov HV_FAST_VINTR_SET_STATE, %o5
649 ta HV_FAST_TRAP
650 retl
651 nop
652ENDPROC(sun4v_vintr_set_state)
653
654 /* %o0: device handle
655 * %o1: device INO
656 * %o2: pointer to unsigned long cpuid
657 *
658 * returns %o0: status
659 */
660ENTRY(sun4v_vintr_get_target)
661 mov %o2, %g1
662 mov HV_FAST_VINTR_GET_TARGET, %o5
663 ta HV_FAST_TRAP
664 stx %o1, [%g1]
665 retl
666 nop
667ENDPROC(sun4v_vintr_get_target)
668
669 /* %o0: device handle
670 * %o1: device INO
671 * %o2: cpuid
672 *
673 * returns %o0: status
674 */
675ENTRY(sun4v_vintr_set_target)
676 mov HV_FAST_VINTR_SET_TARGET, %o5
677 ta HV_FAST_TRAP
678 retl
679 nop
680ENDPROC(sun4v_vintr_set_target)
681
682 /* %o0: NCS sub-function
683 * %o1: sub-function arg real-address
684 * %o2: sub-function arg size
685 *
686 * returns %o0: status
687 */
688ENTRY(sun4v_ncs_request)
689 mov HV_FAST_NCS_REQUEST, %o5
690 ta HV_FAST_TRAP
691 retl
692 nop
693ENDPROC(sun4v_ncs_request)
694
695ENTRY(sun4v_svc_send)
696 save %sp, -192, %sp
697 mov %i0, %o0
698 mov %i1, %o1
699 mov %i2, %o2
700 mov HV_FAST_SVC_SEND, %o5
701 ta HV_FAST_TRAP
702 stx %o1, [%i3]
703 ret
704 restore
705ENDPROC(sun4v_svc_send)
706
707ENTRY(sun4v_svc_recv)
708 save %sp, -192, %sp
709 mov %i0, %o0
710 mov %i1, %o1
711 mov %i2, %o2
712 mov HV_FAST_SVC_RECV, %o5
713 ta HV_FAST_TRAP
714 stx %o1, [%i3]
715 ret
716 restore
717ENDPROC(sun4v_svc_recv)
718
719ENTRY(sun4v_svc_getstatus)
720 mov HV_FAST_SVC_GETSTATUS, %o5
721 mov %o1, %o4
722 ta HV_FAST_TRAP
723 stx %o1, [%o4]
724 retl
725 nop
726ENDPROC(sun4v_svc_getstatus)
727
728ENTRY(sun4v_svc_setstatus)
729 mov HV_FAST_SVC_SETSTATUS, %o5
730 ta HV_FAST_TRAP
731 retl
732 nop
733ENDPROC(sun4v_svc_setstatus)
734
735ENTRY(sun4v_svc_clrstatus)
736 mov HV_FAST_SVC_CLRSTATUS, %o5
737 ta HV_FAST_TRAP
738 retl
739 nop
740ENDPROC(sun4v_svc_clrstatus)
741
742ENTRY(sun4v_mmustat_conf)
743 mov %o1, %o4
744 mov HV_FAST_MMUSTAT_CONF, %o5
745 ta HV_FAST_TRAP
746 stx %o1, [%o4]
747 retl
748 nop
749ENDPROC(sun4v_mmustat_conf)
750
751ENTRY(sun4v_mmustat_info)
752 mov %o0, %o4
753 mov HV_FAST_MMUSTAT_INFO, %o5
754 ta HV_FAST_TRAP
755 stx %o1, [%o4]
756 retl
757 nop
758ENDPROC(sun4v_mmustat_info)
759
760ENTRY(sun4v_mmu_demap_all)
761 clr %o0
762 clr %o1
763 mov HV_MMU_ALL, %o2
764 mov HV_FAST_MMU_DEMAP_ALL, %o5
765 ta HV_FAST_TRAP
766 retl
767 nop
768ENDPROC(sun4v_mmu_demap_all)
769
770ENTRY(sun4v_niagara_getperf)
771 mov %o0, %o4
772 mov HV_FAST_GET_PERFREG, %o5
773 ta HV_FAST_TRAP
774 stx %o1, [%o4]
775 retl
776 nop
777ENDPROC(sun4v_niagara_getperf)
778
779ENTRY(sun4v_niagara_setperf)
780 mov HV_FAST_SET_PERFREG, %o5
781 ta HV_FAST_TRAP
782 retl
783 nop
784ENDPROC(sun4v_niagara_setperf)
785
786ENTRY(sun4v_niagara2_getperf)
787 mov %o0, %o4
788 mov HV_FAST_N2_GET_PERFREG, %o5
789 ta HV_FAST_TRAP
790 stx %o1, [%o4]
791 retl
792 nop
793ENDPROC(sun4v_niagara2_getperf)
794
795ENTRY(sun4v_niagara2_setperf)
796 mov HV_FAST_N2_SET_PERFREG, %o5
797 ta HV_FAST_TRAP
798 retl
799 nop
800ENDPROC(sun4v_niagara2_setperf)
diff --git a/arch/sparc/kernel/hvtramp.S b/arch/sparc/kernel/hvtramp.S
new file mode 100644
index 000000000000..9365432904d6
--- /dev/null
+++ b/arch/sparc/kernel/hvtramp.S
@@ -0,0 +1,140 @@
1/* hvtramp.S: Hypervisor start-cpu trampoline code.
2 *
3 * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
4 */
5
6#include <linux/init.h>
7
8#include <asm/thread_info.h>
9#include <asm/hypervisor.h>
10#include <asm/scratchpad.h>
11#include <asm/spitfire.h>
12#include <asm/hvtramp.h>
13#include <asm/pstate.h>
14#include <asm/ptrace.h>
15#include <asm/head.h>
16#include <asm/asi.h>
17#include <asm/pil.h>
18
19 __CPUINIT
20 .align 8
21 .globl hv_cpu_startup, hv_cpu_startup_end
22
23 /* This code executes directly out of the hypervisor
24 * with physical addressing (va==pa). %o0 contains
25 * our client argument which for Linux points to
26 * a descriptor data structure which defines the
27 * MMU entries we need to load up.
28 *
29 * After we set things up we enable the MMU and call
30 * into the kernel.
31 *
32 * First setup basic privileged cpu state.
33 */
34hv_cpu_startup:
35 SET_GL(0)
36 wrpr %g0, PIL_NORMAL_MAX, %pil
37 wrpr %g0, 0, %canrestore
38 wrpr %g0, 0, %otherwin
39 wrpr %g0, 6, %cansave
40 wrpr %g0, 6, %cleanwin
41 wrpr %g0, 0, %cwp
42 wrpr %g0, 0, %wstate
43 wrpr %g0, 0, %tl
44
45 sethi %hi(sparc64_ttable_tl0), %g1
46 wrpr %g1, %tba
47
48 mov %o0, %l0
49
50 lduw [%l0 + HVTRAMP_DESCR_CPU], %g1
51 mov SCRATCHPAD_CPUID, %g2
52 stxa %g1, [%g2] ASI_SCRATCHPAD
53
54 ldx [%l0 + HVTRAMP_DESCR_FAULT_INFO_VA], %g2
55 stxa %g2, [%g0] ASI_SCRATCHPAD
56
57 mov 0, %l1
58 lduw [%l0 + HVTRAMP_DESCR_NUM_MAPPINGS], %l2
59 add %l0, HVTRAMP_DESCR_MAPS, %l3
60
611: ldx [%l3 + HVTRAMP_MAPPING_VADDR], %o0
62 clr %o1
63 ldx [%l3 + HVTRAMP_MAPPING_TTE], %o2
64 mov HV_MMU_IMMU | HV_MMU_DMMU, %o3
65 mov HV_FAST_MMU_MAP_PERM_ADDR, %o5
66 ta HV_FAST_TRAP
67
68 brnz,pn %o0, 80f
69 nop
70
71 add %l1, 1, %l1
72 cmp %l1, %l2
73 blt,a,pt %xcc, 1b
74 add %l3, HVTRAMP_MAPPING_SIZE, %l3
75
76 ldx [%l0 + HVTRAMP_DESCR_FAULT_INFO_PA], %o0
77 mov HV_FAST_MMU_FAULT_AREA_CONF, %o5
78 ta HV_FAST_TRAP
79
80 brnz,pn %o0, 80f
81 nop
82
83 wrpr %g0, (PSTATE_PRIV | PSTATE_PEF), %pstate
84
85 ldx [%l0 + HVTRAMP_DESCR_THREAD_REG], %l6
86
87 mov 1, %o0
88 set 1f, %o1
89 mov HV_FAST_MMU_ENABLE, %o5
90 ta HV_FAST_TRAP
91
92 ba,pt %xcc, 80f
93 nop
94
951:
96 wr %g0, 0, %fprs
97 wr %g0, ASI_P, %asi
98
99 mov PRIMARY_CONTEXT, %g7
100 stxa %g0, [%g7] ASI_MMU
101 membar #Sync
102
103 mov SECONDARY_CONTEXT, %g7
104 stxa %g0, [%g7] ASI_MMU
105 membar #Sync
106
107 mov %l6, %g6
108 ldx [%g6 + TI_TASK], %g4
109
110 mov 1, %g5
111 sllx %g5, THREAD_SHIFT, %g5
112 sub %g5, (STACKFRAME_SZ + STACK_BIAS), %g5
113 add %g6, %g5, %sp
114 mov 0, %fp
115
116 call init_irqwork_curcpu
117 nop
118 call hard_smp_processor_id
119 nop
120
121 call sun4v_register_mondo_queues
122 nop
123
124 call init_cur_cpu_trap
125 mov %g6, %o0
126
127 wrpr %g0, (PSTATE_PRIV | PSTATE_PEF | PSTATE_IE), %pstate
128
129 call smp_callin
130 nop
131 call cpu_idle
132 mov 0, %o0
133 call cpu_panic
134 nop
135
13680: ba,pt %xcc, 80b
137 nop
138
139 .align 8
140hv_cpu_startup_end:
diff --git a/arch/sparc/kernel/idprom_64.c b/arch/sparc/kernel/idprom_64.c
new file mode 100644
index 000000000000..5b45a808c621
--- /dev/null
+++ b/arch/sparc/kernel/idprom_64.c
@@ -0,0 +1,49 @@
1/*
2 * idprom.c: Routines to load the idprom into kernel addresses and
3 * interpret the data contained within.
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 */
7
8#include <linux/kernel.h>
9#include <linux/types.h>
10#include <linux/init.h>
11
12#include <asm/oplib.h>
13#include <asm/idprom.h>
14
15struct idprom *idprom;
16static struct idprom idprom_buffer;
17
18/* Calculate the IDPROM checksum (xor of the data bytes). */
19static unsigned char __init calc_idprom_cksum(struct idprom *idprom)
20{
21 unsigned char cksum, i, *ptr = (unsigned char *)idprom;
22
23 for (i = cksum = 0; i <= 0x0E; i++)
24 cksum ^= *ptr++;
25
26 return cksum;
27}
28
29/* Create a local IDPROM copy and verify integrity. */
30void __init idprom_init(void)
31{
32 prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer));
33
34 idprom = &idprom_buffer;
35
36 if (idprom->id_format != 0x01) {
37 prom_printf("IDPROM: Warning, unknown format type!\n");
38 }
39
40 if (idprom->id_cksum != calc_idprom_cksum(idprom)) {
41 prom_printf("IDPROM: Warning, checksum failure (nvram=%x, calc=%x)!\n",
42 idprom->id_cksum, calc_idprom_cksum(idprom));
43 }
44
45 printk("Ethernet address: %02x:%02x:%02x:%02x:%02x:%02x\n",
46 idprom->id_ethaddr[0], idprom->id_ethaddr[1],
47 idprom->id_ethaddr[2], idprom->id_ethaddr[3],
48 idprom->id_ethaddr[4], idprom->id_ethaddr[5]);
49}
diff --git a/arch/sparc/kernel/init_task_64.c b/arch/sparc/kernel/init_task_64.c
new file mode 100644
index 000000000000..d2b312381c19
--- /dev/null
+++ b/arch/sparc/kernel/init_task_64.c
@@ -0,0 +1,35 @@
1#include <linux/mm.h>
2#include <linux/fs.h>
3#include <linux/module.h>
4#include <linux/sched.h>
5#include <linux/init_task.h>
6#include <linux/mqueue.h>
7
8#include <asm/pgtable.h>
9#include <asm/uaccess.h>
10#include <asm/processor.h>
11
12static struct fs_struct init_fs = INIT_FS;
13static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
14static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
15struct mm_struct init_mm = INIT_MM(init_mm);
16
17EXPORT_SYMBOL(init_mm);
18
19/* .text section in head.S is aligned at 2 page boundary and this gets linked
20 * right after that so that the init_thread_union is aligned properly as well.
21 * We really don't need this special alignment like the Intel does, but
22 * I do it anyways for completeness.
23 */
24__asm__ (".text");
25union thread_union init_thread_union = { INIT_THREAD_INFO(init_task) };
26
27/*
28 * Initial task structure.
29 *
30 * All other task structs will be allocated on slabs in fork.c
31 */
32EXPORT_SYMBOL(init_task);
33
34__asm__(".data");
35struct task_struct init_task = INIT_TASK(init_task);
diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c
new file mode 100644
index 000000000000..1cc1995531e2
--- /dev/null
+++ b/arch/sparc/kernel/iommu.c
@@ -0,0 +1,866 @@
1/* iommu.c: Generic sparc64 IOMMU support.
2 *
3 * Copyright (C) 1999, 2007, 2008 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1999, 2000 Jakub Jelinek (jakub@redhat.com)
5 */
6
7#include <linux/kernel.h>
8#include <linux/module.h>
9#include <linux/delay.h>
10#include <linux/device.h>
11#include <linux/dma-mapping.h>
12#include <linux/errno.h>
13#include <linux/iommu-helper.h>
14
15#ifdef CONFIG_PCI
16#include <linux/pci.h>
17#endif
18
19#include <asm/iommu.h>
20
21#include "iommu_common.h"
22
23#define STC_CTXMATCH_ADDR(STC, CTX) \
24 ((STC)->strbuf_ctxmatch_base + ((CTX) << 3))
25#define STC_FLUSHFLAG_INIT(STC) \
26 (*((STC)->strbuf_flushflag) = 0UL)
27#define STC_FLUSHFLAG_SET(STC) \
28 (*((STC)->strbuf_flushflag) != 0UL)
29
30#define iommu_read(__reg) \
31({ u64 __ret; \
32 __asm__ __volatile__("ldxa [%1] %2, %0" \
33 : "=r" (__ret) \
34 : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
35 : "memory"); \
36 __ret; \
37})
38#define iommu_write(__reg, __val) \
39 __asm__ __volatile__("stxa %0, [%1] %2" \
40 : /* no outputs */ \
41 : "r" (__val), "r" (__reg), \
42 "i" (ASI_PHYS_BYPASS_EC_E))
43
44/* Must be invoked under the IOMMU lock. */
45static void iommu_flushall(struct iommu *iommu)
46{
47 if (iommu->iommu_flushinv) {
48 iommu_write(iommu->iommu_flushinv, ~(u64)0);
49 } else {
50 unsigned long tag;
51 int entry;
52
53 tag = iommu->iommu_tags;
54 for (entry = 0; entry < 16; entry++) {
55 iommu_write(tag, 0);
56 tag += 8;
57 }
58
59 /* Ensure completion of previous PIO writes. */
60 (void) iommu_read(iommu->write_complete_reg);
61 }
62}
63
64#define IOPTE_CONSISTENT(CTX) \
65 (IOPTE_VALID | IOPTE_CACHE | \
66 (((CTX) << 47) & IOPTE_CONTEXT))
67
68#define IOPTE_STREAMING(CTX) \
69 (IOPTE_CONSISTENT(CTX) | IOPTE_STBUF)
70
71/* Existing mappings are never marked invalid, instead they
72 * are pointed to a dummy page.
73 */
74#define IOPTE_IS_DUMMY(iommu, iopte) \
75 ((iopte_val(*iopte) & IOPTE_PAGE) == (iommu)->dummy_page_pa)
76
77static inline void iopte_make_dummy(struct iommu *iommu, iopte_t *iopte)
78{
79 unsigned long val = iopte_val(*iopte);
80
81 val &= ~IOPTE_PAGE;
82 val |= iommu->dummy_page_pa;
83
84 iopte_val(*iopte) = val;
85}
86
87/* Based almost entirely upon the ppc64 iommu allocator. If you use the 'handle'
88 * facility it must all be done in one pass while under the iommu lock.
89 *
90 * On sun4u platforms, we only flush the IOMMU once every time we've passed
91 * over the entire page table doing allocations. Therefore we only ever advance
92 * the hint and cannot backtrack it.
93 */
94unsigned long iommu_range_alloc(struct device *dev,
95 struct iommu *iommu,
96 unsigned long npages,
97 unsigned long *handle)
98{
99 unsigned long n, end, start, limit, boundary_size;
100 struct iommu_arena *arena = &iommu->arena;
101 int pass = 0;
102
103 /* This allocator was derived from x86_64's bit string search */
104
105 /* Sanity check */
106 if (unlikely(npages == 0)) {
107 if (printk_ratelimit())
108 WARN_ON(1);
109 return DMA_ERROR_CODE;
110 }
111
112 if (handle && *handle)
113 start = *handle;
114 else
115 start = arena->hint;
116
117 limit = arena->limit;
118
119 /* The case below can happen if we have a small segment appended
120 * to a large, or when the previous alloc was at the very end of
121 * the available space. If so, go back to the beginning and flush.
122 */
123 if (start >= limit) {
124 start = 0;
125 if (iommu->flush_all)
126 iommu->flush_all(iommu);
127 }
128
129 again:
130
131 if (dev)
132 boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1,
133 1 << IO_PAGE_SHIFT);
134 else
135 boundary_size = ALIGN(1UL << 32, 1 << IO_PAGE_SHIFT);
136
137 n = iommu_area_alloc(arena->map, limit, start, npages,
138 iommu->page_table_map_base >> IO_PAGE_SHIFT,
139 boundary_size >> IO_PAGE_SHIFT, 0);
140 if (n == -1) {
141 if (likely(pass < 1)) {
142 /* First failure, rescan from the beginning. */
143 start = 0;
144 if (iommu->flush_all)
145 iommu->flush_all(iommu);
146 pass++;
147 goto again;
148 } else {
149 /* Second failure, give up */
150 return DMA_ERROR_CODE;
151 }
152 }
153
154 end = n + npages;
155
156 arena->hint = end;
157
158 /* Update handle for SG allocations */
159 if (handle)
160 *handle = end;
161
162 return n;
163}
164
165void iommu_range_free(struct iommu *iommu, dma_addr_t dma_addr, unsigned long npages)
166{
167 struct iommu_arena *arena = &iommu->arena;
168 unsigned long entry;
169
170 entry = (dma_addr - iommu->page_table_map_base) >> IO_PAGE_SHIFT;
171
172 iommu_area_free(arena->map, entry, npages);
173}
174
175int iommu_table_init(struct iommu *iommu, int tsbsize,
176 u32 dma_offset, u32 dma_addr_mask,
177 int numa_node)
178{
179 unsigned long i, order, sz, num_tsb_entries;
180 struct page *page;
181
182 num_tsb_entries = tsbsize / sizeof(iopte_t);
183
184 /* Setup initial software IOMMU state. */
185 spin_lock_init(&iommu->lock);
186 iommu->ctx_lowest_free = 1;
187 iommu->page_table_map_base = dma_offset;
188 iommu->dma_addr_mask = dma_addr_mask;
189
190 /* Allocate and initialize the free area map. */
191 sz = num_tsb_entries / 8;
192 sz = (sz + 7UL) & ~7UL;
193 iommu->arena.map = kmalloc_node(sz, GFP_KERNEL, numa_node);
194 if (!iommu->arena.map) {
195 printk(KERN_ERR "IOMMU: Error, kmalloc(arena.map) failed.\n");
196 return -ENOMEM;
197 }
198 memset(iommu->arena.map, 0, sz);
199 iommu->arena.limit = num_tsb_entries;
200
201 if (tlb_type != hypervisor)
202 iommu->flush_all = iommu_flushall;
203
204 /* Allocate and initialize the dummy page which we
205 * set inactive IO PTEs to point to.
206 */
207 page = alloc_pages_node(numa_node, GFP_KERNEL, 0);
208 if (!page) {
209 printk(KERN_ERR "IOMMU: Error, gfp(dummy_page) failed.\n");
210 goto out_free_map;
211 }
212 iommu->dummy_page = (unsigned long) page_address(page);
213 memset((void *)iommu->dummy_page, 0, PAGE_SIZE);
214 iommu->dummy_page_pa = (unsigned long) __pa(iommu->dummy_page);
215
216 /* Now allocate and setup the IOMMU page table itself. */
217 order = get_order(tsbsize);
218 page = alloc_pages_node(numa_node, GFP_KERNEL, order);
219 if (!page) {
220 printk(KERN_ERR "IOMMU: Error, gfp(tsb) failed.\n");
221 goto out_free_dummy_page;
222 }
223 iommu->page_table = (iopte_t *)page_address(page);
224
225 for (i = 0; i < num_tsb_entries; i++)
226 iopte_make_dummy(iommu, &iommu->page_table[i]);
227
228 return 0;
229
230out_free_dummy_page:
231 free_page(iommu->dummy_page);
232 iommu->dummy_page = 0UL;
233
234out_free_map:
235 kfree(iommu->arena.map);
236 iommu->arena.map = NULL;
237
238 return -ENOMEM;
239}
240
241static inline iopte_t *alloc_npages(struct device *dev, struct iommu *iommu,
242 unsigned long npages)
243{
244 unsigned long entry;
245
246 entry = iommu_range_alloc(dev, iommu, npages, NULL);
247 if (unlikely(entry == DMA_ERROR_CODE))
248 return NULL;
249
250 return iommu->page_table + entry;
251}
252
253static int iommu_alloc_ctx(struct iommu *iommu)
254{
255 int lowest = iommu->ctx_lowest_free;
256 int sz = IOMMU_NUM_CTXS - lowest;
257 int n = find_next_zero_bit(iommu->ctx_bitmap, sz, lowest);
258
259 if (unlikely(n == sz)) {
260 n = find_next_zero_bit(iommu->ctx_bitmap, lowest, 1);
261 if (unlikely(n == lowest)) {
262 printk(KERN_WARNING "IOMMU: Ran out of contexts.\n");
263 n = 0;
264 }
265 }
266 if (n)
267 __set_bit(n, iommu->ctx_bitmap);
268
269 return n;
270}
271
272static inline void iommu_free_ctx(struct iommu *iommu, int ctx)
273{
274 if (likely(ctx)) {
275 __clear_bit(ctx, iommu->ctx_bitmap);
276 if (ctx < iommu->ctx_lowest_free)
277 iommu->ctx_lowest_free = ctx;
278 }
279}
280
281static void *dma_4u_alloc_coherent(struct device *dev, size_t size,
282 dma_addr_t *dma_addrp, gfp_t gfp)
283{
284 unsigned long flags, order, first_page;
285 struct iommu *iommu;
286 struct page *page;
287 int npages, nid;
288 iopte_t *iopte;
289 void *ret;
290
291 size = IO_PAGE_ALIGN(size);
292 order = get_order(size);
293 if (order >= 10)
294 return NULL;
295
296 nid = dev->archdata.numa_node;
297 page = alloc_pages_node(nid, gfp, order);
298 if (unlikely(!page))
299 return NULL;
300
301 first_page = (unsigned long) page_address(page);
302 memset((char *)first_page, 0, PAGE_SIZE << order);
303
304 iommu = dev->archdata.iommu;
305
306 spin_lock_irqsave(&iommu->lock, flags);
307 iopte = alloc_npages(dev, iommu, size >> IO_PAGE_SHIFT);
308 spin_unlock_irqrestore(&iommu->lock, flags);
309
310 if (unlikely(iopte == NULL)) {
311 free_pages(first_page, order);
312 return NULL;
313 }
314
315 *dma_addrp = (iommu->page_table_map_base +
316 ((iopte - iommu->page_table) << IO_PAGE_SHIFT));
317 ret = (void *) first_page;
318 npages = size >> IO_PAGE_SHIFT;
319 first_page = __pa(first_page);
320 while (npages--) {
321 iopte_val(*iopte) = (IOPTE_CONSISTENT(0UL) |
322 IOPTE_WRITE |
323 (first_page & IOPTE_PAGE));
324 iopte++;
325 first_page += IO_PAGE_SIZE;
326 }
327
328 return ret;
329}
330
331static void dma_4u_free_coherent(struct device *dev, size_t size,
332 void *cpu, dma_addr_t dvma)
333{
334 struct iommu *iommu;
335 iopte_t *iopte;
336 unsigned long flags, order, npages;
337
338 npages = IO_PAGE_ALIGN(size) >> IO_PAGE_SHIFT;
339 iommu = dev->archdata.iommu;
340 iopte = iommu->page_table +
341 ((dvma - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
342
343 spin_lock_irqsave(&iommu->lock, flags);
344
345 iommu_range_free(iommu, dvma, npages);
346
347 spin_unlock_irqrestore(&iommu->lock, flags);
348
349 order = get_order(size);
350 if (order < 10)
351 free_pages((unsigned long)cpu, order);
352}
353
354static dma_addr_t dma_4u_map_single(struct device *dev, void *ptr, size_t sz,
355 enum dma_data_direction direction)
356{
357 struct iommu *iommu;
358 struct strbuf *strbuf;
359 iopte_t *base;
360 unsigned long flags, npages, oaddr;
361 unsigned long i, base_paddr, ctx;
362 u32 bus_addr, ret;
363 unsigned long iopte_protection;
364
365 iommu = dev->archdata.iommu;
366 strbuf = dev->archdata.stc;
367
368 if (unlikely(direction == DMA_NONE))
369 goto bad_no_ctx;
370
371 oaddr = (unsigned long)ptr;
372 npages = IO_PAGE_ALIGN(oaddr + sz) - (oaddr & IO_PAGE_MASK);
373 npages >>= IO_PAGE_SHIFT;
374
375 spin_lock_irqsave(&iommu->lock, flags);
376 base = alloc_npages(dev, iommu, npages);
377 ctx = 0;
378 if (iommu->iommu_ctxflush)
379 ctx = iommu_alloc_ctx(iommu);
380 spin_unlock_irqrestore(&iommu->lock, flags);
381
382 if (unlikely(!base))
383 goto bad;
384
385 bus_addr = (iommu->page_table_map_base +
386 ((base - iommu->page_table) << IO_PAGE_SHIFT));
387 ret = bus_addr | (oaddr & ~IO_PAGE_MASK);
388 base_paddr = __pa(oaddr & IO_PAGE_MASK);
389 if (strbuf->strbuf_enabled)
390 iopte_protection = IOPTE_STREAMING(ctx);
391 else
392 iopte_protection = IOPTE_CONSISTENT(ctx);
393 if (direction != DMA_TO_DEVICE)
394 iopte_protection |= IOPTE_WRITE;
395
396 for (i = 0; i < npages; i++, base++, base_paddr += IO_PAGE_SIZE)
397 iopte_val(*base) = iopte_protection | base_paddr;
398
399 return ret;
400
401bad:
402 iommu_free_ctx(iommu, ctx);
403bad_no_ctx:
404 if (printk_ratelimit())
405 WARN_ON(1);
406 return DMA_ERROR_CODE;
407}
408
409static void strbuf_flush(struct strbuf *strbuf, struct iommu *iommu,
410 u32 vaddr, unsigned long ctx, unsigned long npages,
411 enum dma_data_direction direction)
412{
413 int limit;
414
415 if (strbuf->strbuf_ctxflush &&
416 iommu->iommu_ctxflush) {
417 unsigned long matchreg, flushreg;
418 u64 val;
419
420 flushreg = strbuf->strbuf_ctxflush;
421 matchreg = STC_CTXMATCH_ADDR(strbuf, ctx);
422
423 iommu_write(flushreg, ctx);
424 val = iommu_read(matchreg);
425 val &= 0xffff;
426 if (!val)
427 goto do_flush_sync;
428
429 while (val) {
430 if (val & 0x1)
431 iommu_write(flushreg, ctx);
432 val >>= 1;
433 }
434 val = iommu_read(matchreg);
435 if (unlikely(val)) {
436 printk(KERN_WARNING "strbuf_flush: ctx flush "
437 "timeout matchreg[%lx] ctx[%lx]\n",
438 val, ctx);
439 goto do_page_flush;
440 }
441 } else {
442 unsigned long i;
443
444 do_page_flush:
445 for (i = 0; i < npages; i++, vaddr += IO_PAGE_SIZE)
446 iommu_write(strbuf->strbuf_pflush, vaddr);
447 }
448
449do_flush_sync:
450 /* If the device could not have possibly put dirty data into
451 * the streaming cache, no flush-flag synchronization needs
452 * to be performed.
453 */
454 if (direction == DMA_TO_DEVICE)
455 return;
456
457 STC_FLUSHFLAG_INIT(strbuf);
458 iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
459 (void) iommu_read(iommu->write_complete_reg);
460
461 limit = 100000;
462 while (!STC_FLUSHFLAG_SET(strbuf)) {
463 limit--;
464 if (!limit)
465 break;
466 udelay(1);
467 rmb();
468 }
469 if (!limit)
470 printk(KERN_WARNING "strbuf_flush: flushflag timeout "
471 "vaddr[%08x] ctx[%lx] npages[%ld]\n",
472 vaddr, ctx, npages);
473}
474
475static void dma_4u_unmap_single(struct device *dev, dma_addr_t bus_addr,
476 size_t sz, enum dma_data_direction direction)
477{
478 struct iommu *iommu;
479 struct strbuf *strbuf;
480 iopte_t *base;
481 unsigned long flags, npages, ctx, i;
482
483 if (unlikely(direction == DMA_NONE)) {
484 if (printk_ratelimit())
485 WARN_ON(1);
486 return;
487 }
488
489 iommu = dev->archdata.iommu;
490 strbuf = dev->archdata.stc;
491
492 npages = IO_PAGE_ALIGN(bus_addr + sz) - (bus_addr & IO_PAGE_MASK);
493 npages >>= IO_PAGE_SHIFT;
494 base = iommu->page_table +
495 ((bus_addr - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
496 bus_addr &= IO_PAGE_MASK;
497
498 spin_lock_irqsave(&iommu->lock, flags);
499
500 /* Record the context, if any. */
501 ctx = 0;
502 if (iommu->iommu_ctxflush)
503 ctx = (iopte_val(*base) & IOPTE_CONTEXT) >> 47UL;
504
505 /* Step 1: Kick data out of streaming buffers if necessary. */
506 if (strbuf->strbuf_enabled)
507 strbuf_flush(strbuf, iommu, bus_addr, ctx,
508 npages, direction);
509
510 /* Step 2: Clear out TSB entries. */
511 for (i = 0; i < npages; i++)
512 iopte_make_dummy(iommu, base + i);
513
514 iommu_range_free(iommu, bus_addr, npages);
515
516 iommu_free_ctx(iommu, ctx);
517
518 spin_unlock_irqrestore(&iommu->lock, flags);
519}
520
521static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist,
522 int nelems, enum dma_data_direction direction)
523{
524 struct scatterlist *s, *outs, *segstart;
525 unsigned long flags, handle, prot, ctx;
526 dma_addr_t dma_next = 0, dma_addr;
527 unsigned int max_seg_size;
528 unsigned long seg_boundary_size;
529 int outcount, incount, i;
530 struct strbuf *strbuf;
531 struct iommu *iommu;
532 unsigned long base_shift;
533
534 BUG_ON(direction == DMA_NONE);
535
536 iommu = dev->archdata.iommu;
537 strbuf = dev->archdata.stc;
538 if (nelems == 0 || !iommu)
539 return 0;
540
541 spin_lock_irqsave(&iommu->lock, flags);
542
543 ctx = 0;
544 if (iommu->iommu_ctxflush)
545 ctx = iommu_alloc_ctx(iommu);
546
547 if (strbuf->strbuf_enabled)
548 prot = IOPTE_STREAMING(ctx);
549 else
550 prot = IOPTE_CONSISTENT(ctx);
551 if (direction != DMA_TO_DEVICE)
552 prot |= IOPTE_WRITE;
553
554 outs = s = segstart = &sglist[0];
555 outcount = 1;
556 incount = nelems;
557 handle = 0;
558
559 /* Init first segment length for backout at failure */
560 outs->dma_length = 0;
561
562 max_seg_size = dma_get_max_seg_size(dev);
563 seg_boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1,
564 IO_PAGE_SIZE) >> IO_PAGE_SHIFT;
565 base_shift = iommu->page_table_map_base >> IO_PAGE_SHIFT;
566 for_each_sg(sglist, s, nelems, i) {
567 unsigned long paddr, npages, entry, out_entry = 0, slen;
568 iopte_t *base;
569
570 slen = s->length;
571 /* Sanity check */
572 if (slen == 0) {
573 dma_next = 0;
574 continue;
575 }
576 /* Allocate iommu entries for that segment */
577 paddr = (unsigned long) SG_ENT_PHYS_ADDRESS(s);
578 npages = iommu_num_pages(paddr, slen, IO_PAGE_SIZE);
579 entry = iommu_range_alloc(dev, iommu, npages, &handle);
580
581 /* Handle failure */
582 if (unlikely(entry == DMA_ERROR_CODE)) {
583 if (printk_ratelimit())
584 printk(KERN_INFO "iommu_alloc failed, iommu %p paddr %lx"
585 " npages %lx\n", iommu, paddr, npages);
586 goto iommu_map_failed;
587 }
588
589 base = iommu->page_table + entry;
590
591 /* Convert entry to a dma_addr_t */
592 dma_addr = iommu->page_table_map_base +
593 (entry << IO_PAGE_SHIFT);
594 dma_addr |= (s->offset & ~IO_PAGE_MASK);
595
596 /* Insert into HW table */
597 paddr &= IO_PAGE_MASK;
598 while (npages--) {
599 iopte_val(*base) = prot | paddr;
600 base++;
601 paddr += IO_PAGE_SIZE;
602 }
603
604 /* If we are in an open segment, try merging */
605 if (segstart != s) {
606 /* We cannot merge if:
607 * - allocated dma_addr isn't contiguous to previous allocation
608 */
609 if ((dma_addr != dma_next) ||
610 (outs->dma_length + s->length > max_seg_size) ||
611 (is_span_boundary(out_entry, base_shift,
612 seg_boundary_size, outs, s))) {
613 /* Can't merge: create a new segment */
614 segstart = s;
615 outcount++;
616 outs = sg_next(outs);
617 } else {
618 outs->dma_length += s->length;
619 }
620 }
621
622 if (segstart == s) {
623 /* This is a new segment, fill entries */
624 outs->dma_address = dma_addr;
625 outs->dma_length = slen;
626 out_entry = entry;
627 }
628
629 /* Calculate next page pointer for contiguous check */
630 dma_next = dma_addr + slen;
631 }
632
633 spin_unlock_irqrestore(&iommu->lock, flags);
634
635 if (outcount < incount) {
636 outs = sg_next(outs);
637 outs->dma_address = DMA_ERROR_CODE;
638 outs->dma_length = 0;
639 }
640
641 return outcount;
642
643iommu_map_failed:
644 for_each_sg(sglist, s, nelems, i) {
645 if (s->dma_length != 0) {
646 unsigned long vaddr, npages, entry, j;
647 iopte_t *base;
648
649 vaddr = s->dma_address & IO_PAGE_MASK;
650 npages = iommu_num_pages(s->dma_address, s->dma_length,
651 IO_PAGE_SIZE);
652 iommu_range_free(iommu, vaddr, npages);
653
654 entry = (vaddr - iommu->page_table_map_base)
655 >> IO_PAGE_SHIFT;
656 base = iommu->page_table + entry;
657
658 for (j = 0; j < npages; j++)
659 iopte_make_dummy(iommu, base + j);
660
661 s->dma_address = DMA_ERROR_CODE;
662 s->dma_length = 0;
663 }
664 if (s == outs)
665 break;
666 }
667 spin_unlock_irqrestore(&iommu->lock, flags);
668
669 return 0;
670}
671
672/* If contexts are being used, they are the same in all of the mappings
673 * we make for a particular SG.
674 */
675static unsigned long fetch_sg_ctx(struct iommu *iommu, struct scatterlist *sg)
676{
677 unsigned long ctx = 0;
678
679 if (iommu->iommu_ctxflush) {
680 iopte_t *base;
681 u32 bus_addr;
682
683 bus_addr = sg->dma_address & IO_PAGE_MASK;
684 base = iommu->page_table +
685 ((bus_addr - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
686
687 ctx = (iopte_val(*base) & IOPTE_CONTEXT) >> 47UL;
688 }
689 return ctx;
690}
691
692static void dma_4u_unmap_sg(struct device *dev, struct scatterlist *sglist,
693 int nelems, enum dma_data_direction direction)
694{
695 unsigned long flags, ctx;
696 struct scatterlist *sg;
697 struct strbuf *strbuf;
698 struct iommu *iommu;
699
700 BUG_ON(direction == DMA_NONE);
701
702 iommu = dev->archdata.iommu;
703 strbuf = dev->archdata.stc;
704
705 ctx = fetch_sg_ctx(iommu, sglist);
706
707 spin_lock_irqsave(&iommu->lock, flags);
708
709 sg = sglist;
710 while (nelems--) {
711 dma_addr_t dma_handle = sg->dma_address;
712 unsigned int len = sg->dma_length;
713 unsigned long npages, entry;
714 iopte_t *base;
715 int i;
716
717 if (!len)
718 break;
719 npages = iommu_num_pages(dma_handle, len, IO_PAGE_SIZE);
720 iommu_range_free(iommu, dma_handle, npages);
721
722 entry = ((dma_handle - iommu->page_table_map_base)
723 >> IO_PAGE_SHIFT);
724 base = iommu->page_table + entry;
725
726 dma_handle &= IO_PAGE_MASK;
727 if (strbuf->strbuf_enabled)
728 strbuf_flush(strbuf, iommu, dma_handle, ctx,
729 npages, direction);
730
731 for (i = 0; i < npages; i++)
732 iopte_make_dummy(iommu, base + i);
733
734 sg = sg_next(sg);
735 }
736
737 iommu_free_ctx(iommu, ctx);
738
739 spin_unlock_irqrestore(&iommu->lock, flags);
740}
741
742static void dma_4u_sync_single_for_cpu(struct device *dev,
743 dma_addr_t bus_addr, size_t sz,
744 enum dma_data_direction direction)
745{
746 struct iommu *iommu;
747 struct strbuf *strbuf;
748 unsigned long flags, ctx, npages;
749
750 iommu = dev->archdata.iommu;
751 strbuf = dev->archdata.stc;
752
753 if (!strbuf->strbuf_enabled)
754 return;
755
756 spin_lock_irqsave(&iommu->lock, flags);
757
758 npages = IO_PAGE_ALIGN(bus_addr + sz) - (bus_addr & IO_PAGE_MASK);
759 npages >>= IO_PAGE_SHIFT;
760 bus_addr &= IO_PAGE_MASK;
761
762 /* Step 1: Record the context, if any. */
763 ctx = 0;
764 if (iommu->iommu_ctxflush &&
765 strbuf->strbuf_ctxflush) {
766 iopte_t *iopte;
767
768 iopte = iommu->page_table +
769 ((bus_addr - iommu->page_table_map_base)>>IO_PAGE_SHIFT);
770 ctx = (iopte_val(*iopte) & IOPTE_CONTEXT) >> 47UL;
771 }
772
773 /* Step 2: Kick data out of streaming buffers. */
774 strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
775
776 spin_unlock_irqrestore(&iommu->lock, flags);
777}
778
779static void dma_4u_sync_sg_for_cpu(struct device *dev,
780 struct scatterlist *sglist, int nelems,
781 enum dma_data_direction direction)
782{
783 struct iommu *iommu;
784 struct strbuf *strbuf;
785 unsigned long flags, ctx, npages, i;
786 struct scatterlist *sg, *sgprv;
787 u32 bus_addr;
788
789 iommu = dev->archdata.iommu;
790 strbuf = dev->archdata.stc;
791
792 if (!strbuf->strbuf_enabled)
793 return;
794
795 spin_lock_irqsave(&iommu->lock, flags);
796
797 /* Step 1: Record the context, if any. */
798 ctx = 0;
799 if (iommu->iommu_ctxflush &&
800 strbuf->strbuf_ctxflush) {
801 iopte_t *iopte;
802
803 iopte = iommu->page_table +
804 ((sglist[0].dma_address - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
805 ctx = (iopte_val(*iopte) & IOPTE_CONTEXT) >> 47UL;
806 }
807
808 /* Step 2: Kick data out of streaming buffers. */
809 bus_addr = sglist[0].dma_address & IO_PAGE_MASK;
810 sgprv = NULL;
811 for_each_sg(sglist, sg, nelems, i) {
812 if (sg->dma_length == 0)
813 break;
814 sgprv = sg;
815 }
816
817 npages = (IO_PAGE_ALIGN(sgprv->dma_address + sgprv->dma_length)
818 - bus_addr) >> IO_PAGE_SHIFT;
819 strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
820
821 spin_unlock_irqrestore(&iommu->lock, flags);
822}
823
824static const struct dma_ops sun4u_dma_ops = {
825 .alloc_coherent = dma_4u_alloc_coherent,
826 .free_coherent = dma_4u_free_coherent,
827 .map_single = dma_4u_map_single,
828 .unmap_single = dma_4u_unmap_single,
829 .map_sg = dma_4u_map_sg,
830 .unmap_sg = dma_4u_unmap_sg,
831 .sync_single_for_cpu = dma_4u_sync_single_for_cpu,
832 .sync_sg_for_cpu = dma_4u_sync_sg_for_cpu,
833};
834
835const struct dma_ops *dma_ops = &sun4u_dma_ops;
836EXPORT_SYMBOL(dma_ops);
837
838int dma_supported(struct device *dev, u64 device_mask)
839{
840 struct iommu *iommu = dev->archdata.iommu;
841 u64 dma_addr_mask = iommu->dma_addr_mask;
842
843 if (device_mask >= (1UL << 32UL))
844 return 0;
845
846 if ((device_mask & dma_addr_mask) == dma_addr_mask)
847 return 1;
848
849#ifdef CONFIG_PCI
850 if (dev->bus == &pci_bus_type)
851 return pci_dma_supported(to_pci_dev(dev), device_mask);
852#endif
853
854 return 0;
855}
856EXPORT_SYMBOL(dma_supported);
857
858int dma_set_mask(struct device *dev, u64 dma_mask)
859{
860#ifdef CONFIG_PCI
861 if (dev->bus == &pci_bus_type)
862 return pci_set_dma_mask(to_pci_dev(dev), dma_mask);
863#endif
864 return -EINVAL;
865}
866EXPORT_SYMBOL(dma_set_mask);
diff --git a/arch/sparc/kernel/iommu_common.h b/arch/sparc/kernel/iommu_common.h
new file mode 100644
index 000000000000..591f5879039c
--- /dev/null
+++ b/arch/sparc/kernel/iommu_common.h
@@ -0,0 +1,59 @@
1/* iommu_common.h: UltraSparc SBUS/PCI common iommu declarations.
2 *
3 * Copyright (C) 1999, 2008 David S. Miller (davem@davemloft.net)
4 */
5
6#ifndef _IOMMU_COMMON_H
7#define _IOMMU_COMMON_H
8
9#include <linux/kernel.h>
10#include <linux/types.h>
11#include <linux/sched.h>
12#include <linux/mm.h>
13#include <linux/scatterlist.h>
14#include <linux/device.h>
15#include <linux/iommu-helper.h>
16
17#include <asm/iommu.h>
18#include <asm/scatterlist.h>
19
20/*
21 * These give mapping size of each iommu pte/tlb.
22 */
23#define IO_PAGE_SHIFT 13
24#define IO_PAGE_SIZE (1UL << IO_PAGE_SHIFT)
25#define IO_PAGE_MASK (~(IO_PAGE_SIZE-1))
26#define IO_PAGE_ALIGN(addr) ALIGN(addr, IO_PAGE_SIZE)
27
28#define IO_TSB_ENTRIES (128*1024)
29#define IO_TSB_SIZE (IO_TSB_ENTRIES * 8)
30
31/*
32 * This is the hardwired shift in the iotlb tag/data parts.
33 */
34#define IOMMU_PAGE_SHIFT 13
35
36#define SG_ENT_PHYS_ADDRESS(SG) (__pa(sg_virt((SG))))
37
38static inline int is_span_boundary(unsigned long entry,
39 unsigned long shift,
40 unsigned long boundary_size,
41 struct scatterlist *outs,
42 struct scatterlist *sg)
43{
44 unsigned long paddr = SG_ENT_PHYS_ADDRESS(outs);
45 int nr = iommu_num_pages(paddr, outs->dma_length + sg->length,
46 IO_PAGE_SIZE);
47
48 return iommu_is_span_boundary(entry, nr, shift, boundary_size);
49}
50
51extern unsigned long iommu_range_alloc(struct device *dev,
52 struct iommu *iommu,
53 unsigned long npages,
54 unsigned long *handle);
55extern void iommu_range_free(struct iommu *iommu,
56 dma_addr_t dma_addr,
57 unsigned long npages);
58
59#endif /* _IOMMU_COMMON_H */
diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c
new file mode 100644
index 000000000000..a3ea2bcb95de
--- /dev/null
+++ b/arch/sparc/kernel/irq_64.c
@@ -0,0 +1,1101 @@
1/* irq.c: UltraSparc IRQ handling/init/registry.
2 *
3 * Copyright (C) 1997, 2007, 2008 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
5 * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
6 */
7
8#include <linux/module.h>
9#include <linux/sched.h>
10#include <linux/linkage.h>
11#include <linux/ptrace.h>
12#include <linux/errno.h>
13#include <linux/kernel_stat.h>
14#include <linux/signal.h>
15#include <linux/mm.h>
16#include <linux/interrupt.h>
17#include <linux/slab.h>
18#include <linux/random.h>
19#include <linux/init.h>
20#include <linux/delay.h>
21#include <linux/proc_fs.h>
22#include <linux/seq_file.h>
23#include <linux/bootmem.h>
24#include <linux/irq.h>
25
26#include <asm/ptrace.h>
27#include <asm/processor.h>
28#include <asm/atomic.h>
29#include <asm/system.h>
30#include <asm/irq.h>
31#include <asm/io.h>
32#include <asm/iommu.h>
33#include <asm/upa.h>
34#include <asm/oplib.h>
35#include <asm/prom.h>
36#include <asm/timer.h>
37#include <asm/smp.h>
38#include <asm/starfire.h>
39#include <asm/uaccess.h>
40#include <asm/cache.h>
41#include <asm/cpudata.h>
42#include <asm/auxio.h>
43#include <asm/head.h>
44#include <asm/hypervisor.h>
45#include <asm/cacheflush.h>
46
47#include "entry.h"
48
49#define NUM_IVECS (IMAP_INR + 1)
50
51struct ino_bucket *ivector_table;
52unsigned long ivector_table_pa;
53
54/* On several sun4u processors, it is illegal to mix bypass and
55 * non-bypass accesses. Therefore we access all INO buckets
56 * using bypass accesses only.
57 */
58static unsigned long bucket_get_chain_pa(unsigned long bucket_pa)
59{
60 unsigned long ret;
61
62 __asm__ __volatile__("ldxa [%1] %2, %0"
63 : "=&r" (ret)
64 : "r" (bucket_pa +
65 offsetof(struct ino_bucket,
66 __irq_chain_pa)),
67 "i" (ASI_PHYS_USE_EC));
68
69 return ret;
70}
71
72static void bucket_clear_chain_pa(unsigned long bucket_pa)
73{
74 __asm__ __volatile__("stxa %%g0, [%0] %1"
75 : /* no outputs */
76 : "r" (bucket_pa +
77 offsetof(struct ino_bucket,
78 __irq_chain_pa)),
79 "i" (ASI_PHYS_USE_EC));
80}
81
82static unsigned int bucket_get_virt_irq(unsigned long bucket_pa)
83{
84 unsigned int ret;
85
86 __asm__ __volatile__("lduwa [%1] %2, %0"
87 : "=&r" (ret)
88 : "r" (bucket_pa +
89 offsetof(struct ino_bucket,
90 __virt_irq)),
91 "i" (ASI_PHYS_USE_EC));
92
93 return ret;
94}
95
96static void bucket_set_virt_irq(unsigned long bucket_pa,
97 unsigned int virt_irq)
98{
99 __asm__ __volatile__("stwa %0, [%1] %2"
100 : /* no outputs */
101 : "r" (virt_irq),
102 "r" (bucket_pa +
103 offsetof(struct ino_bucket,
104 __virt_irq)),
105 "i" (ASI_PHYS_USE_EC));
106}
107
108#define irq_work_pa(__cpu) &(trap_block[(__cpu)].irq_worklist_pa)
109
110static struct {
111 unsigned int dev_handle;
112 unsigned int dev_ino;
113 unsigned int in_use;
114} virt_irq_table[NR_IRQS];
115static DEFINE_SPINLOCK(virt_irq_alloc_lock);
116
117unsigned char virt_irq_alloc(unsigned int dev_handle,
118 unsigned int dev_ino)
119{
120 unsigned long flags;
121 unsigned char ent;
122
123 BUILD_BUG_ON(NR_IRQS >= 256);
124
125 spin_lock_irqsave(&virt_irq_alloc_lock, flags);
126
127 for (ent = 1; ent < NR_IRQS; ent++) {
128 if (!virt_irq_table[ent].in_use)
129 break;
130 }
131 if (ent >= NR_IRQS) {
132 printk(KERN_ERR "IRQ: Out of virtual IRQs.\n");
133 ent = 0;
134 } else {
135 virt_irq_table[ent].dev_handle = dev_handle;
136 virt_irq_table[ent].dev_ino = dev_ino;
137 virt_irq_table[ent].in_use = 1;
138 }
139
140 spin_unlock_irqrestore(&virt_irq_alloc_lock, flags);
141
142 return ent;
143}
144
145#ifdef CONFIG_PCI_MSI
146void virt_irq_free(unsigned int virt_irq)
147{
148 unsigned long flags;
149
150 if (virt_irq >= NR_IRQS)
151 return;
152
153 spin_lock_irqsave(&virt_irq_alloc_lock, flags);
154
155 virt_irq_table[virt_irq].in_use = 0;
156
157 spin_unlock_irqrestore(&virt_irq_alloc_lock, flags);
158}
159#endif
160
161/*
162 * /proc/interrupts printing:
163 */
164
165int show_interrupts(struct seq_file *p, void *v)
166{
167 int i = *(loff_t *) v, j;
168 struct irqaction * action;
169 unsigned long flags;
170
171 if (i == 0) {
172 seq_printf(p, " ");
173 for_each_online_cpu(j)
174 seq_printf(p, "CPU%d ",j);
175 seq_putc(p, '\n');
176 }
177
178 if (i < NR_IRQS) {
179 spin_lock_irqsave(&irq_desc[i].lock, flags);
180 action = irq_desc[i].action;
181 if (!action)
182 goto skip;
183 seq_printf(p, "%3d: ",i);
184#ifndef CONFIG_SMP
185 seq_printf(p, "%10u ", kstat_irqs(i));
186#else
187 for_each_online_cpu(j)
188 seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
189#endif
190 seq_printf(p, " %9s", irq_desc[i].chip->typename);
191 seq_printf(p, " %s", action->name);
192
193 for (action=action->next; action; action = action->next)
194 seq_printf(p, ", %s", action->name);
195
196 seq_putc(p, '\n');
197skip:
198 spin_unlock_irqrestore(&irq_desc[i].lock, flags);
199 }
200 return 0;
201}
202
203static unsigned int sun4u_compute_tid(unsigned long imap, unsigned long cpuid)
204{
205 unsigned int tid;
206
207 if (this_is_starfire) {
208 tid = starfire_translate(imap, cpuid);
209 tid <<= IMAP_TID_SHIFT;
210 tid &= IMAP_TID_UPA;
211 } else {
212 if (tlb_type == cheetah || tlb_type == cheetah_plus) {
213 unsigned long ver;
214
215 __asm__ ("rdpr %%ver, %0" : "=r" (ver));
216 if ((ver >> 32UL) == __JALAPENO_ID ||
217 (ver >> 32UL) == __SERRANO_ID) {
218 tid = cpuid << IMAP_TID_SHIFT;
219 tid &= IMAP_TID_JBUS;
220 } else {
221 unsigned int a = cpuid & 0x1f;
222 unsigned int n = (cpuid >> 5) & 0x1f;
223
224 tid = ((a << IMAP_AID_SHIFT) |
225 (n << IMAP_NID_SHIFT));
226 tid &= (IMAP_AID_SAFARI |
227 IMAP_NID_SAFARI);;
228 }
229 } else {
230 tid = cpuid << IMAP_TID_SHIFT;
231 tid &= IMAP_TID_UPA;
232 }
233 }
234
235 return tid;
236}
237
238struct irq_handler_data {
239 unsigned long iclr;
240 unsigned long imap;
241
242 void (*pre_handler)(unsigned int, void *, void *);
243 void *arg1;
244 void *arg2;
245};
246
247#ifdef CONFIG_SMP
248static int irq_choose_cpu(unsigned int virt_irq)
249{
250 cpumask_t mask = irq_desc[virt_irq].affinity;
251 int cpuid;
252
253 if (cpus_equal(mask, CPU_MASK_ALL)) {
254 static int irq_rover;
255 static DEFINE_SPINLOCK(irq_rover_lock);
256 unsigned long flags;
257
258 /* Round-robin distribution... */
259 do_round_robin:
260 spin_lock_irqsave(&irq_rover_lock, flags);
261
262 while (!cpu_online(irq_rover)) {
263 if (++irq_rover >= NR_CPUS)
264 irq_rover = 0;
265 }
266 cpuid = irq_rover;
267 do {
268 if (++irq_rover >= NR_CPUS)
269 irq_rover = 0;
270 } while (!cpu_online(irq_rover));
271
272 spin_unlock_irqrestore(&irq_rover_lock, flags);
273 } else {
274 cpumask_t tmp;
275
276 cpus_and(tmp, cpu_online_map, mask);
277
278 if (cpus_empty(tmp))
279 goto do_round_robin;
280
281 cpuid = first_cpu(tmp);
282 }
283
284 return cpuid;
285}
286#else
287static int irq_choose_cpu(unsigned int virt_irq)
288{
289 return real_hard_smp_processor_id();
290}
291#endif
292
293static void sun4u_irq_enable(unsigned int virt_irq)
294{
295 struct irq_handler_data *data = get_irq_chip_data(virt_irq);
296
297 if (likely(data)) {
298 unsigned long cpuid, imap, val;
299 unsigned int tid;
300
301 cpuid = irq_choose_cpu(virt_irq);
302 imap = data->imap;
303
304 tid = sun4u_compute_tid(imap, cpuid);
305
306 val = upa_readq(imap);
307 val &= ~(IMAP_TID_UPA | IMAP_TID_JBUS |
308 IMAP_AID_SAFARI | IMAP_NID_SAFARI);
309 val |= tid | IMAP_VALID;
310 upa_writeq(val, imap);
311 upa_writeq(ICLR_IDLE, data->iclr);
312 }
313}
314
315static void sun4u_set_affinity(unsigned int virt_irq, cpumask_t mask)
316{
317 sun4u_irq_enable(virt_irq);
318}
319
320static void sun4u_irq_disable(unsigned int virt_irq)
321{
322 struct irq_handler_data *data = get_irq_chip_data(virt_irq);
323
324 if (likely(data)) {
325 unsigned long imap = data->imap;
326 unsigned long tmp = upa_readq(imap);
327
328 tmp &= ~IMAP_VALID;
329 upa_writeq(tmp, imap);
330 }
331}
332
333static void sun4u_irq_eoi(unsigned int virt_irq)
334{
335 struct irq_handler_data *data = get_irq_chip_data(virt_irq);
336 struct irq_desc *desc = irq_desc + virt_irq;
337
338 if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
339 return;
340
341 if (likely(data))
342 upa_writeq(ICLR_IDLE, data->iclr);
343}
344
345static void sun4v_irq_enable(unsigned int virt_irq)
346{
347 unsigned int ino = virt_irq_table[virt_irq].dev_ino;
348 unsigned long cpuid = irq_choose_cpu(virt_irq);
349 int err;
350
351 err = sun4v_intr_settarget(ino, cpuid);
352 if (err != HV_EOK)
353 printk(KERN_ERR "sun4v_intr_settarget(%x,%lu): "
354 "err(%d)\n", ino, cpuid, err);
355 err = sun4v_intr_setstate(ino, HV_INTR_STATE_IDLE);
356 if (err != HV_EOK)
357 printk(KERN_ERR "sun4v_intr_setstate(%x): "
358 "err(%d)\n", ino, err);
359 err = sun4v_intr_setenabled(ino, HV_INTR_ENABLED);
360 if (err != HV_EOK)
361 printk(KERN_ERR "sun4v_intr_setenabled(%x): err(%d)\n",
362 ino, err);
363}
364
365static void sun4v_set_affinity(unsigned int virt_irq, cpumask_t mask)
366{
367 unsigned int ino = virt_irq_table[virt_irq].dev_ino;
368 unsigned long cpuid = irq_choose_cpu(virt_irq);
369 int err;
370
371 err = sun4v_intr_settarget(ino, cpuid);
372 if (err != HV_EOK)
373 printk(KERN_ERR "sun4v_intr_settarget(%x,%lu): "
374 "err(%d)\n", ino, cpuid, err);
375}
376
377static void sun4v_irq_disable(unsigned int virt_irq)
378{
379 unsigned int ino = virt_irq_table[virt_irq].dev_ino;
380 int err;
381
382 err = sun4v_intr_setenabled(ino, HV_INTR_DISABLED);
383 if (err != HV_EOK)
384 printk(KERN_ERR "sun4v_intr_setenabled(%x): "
385 "err(%d)\n", ino, err);
386}
387
388static void sun4v_irq_eoi(unsigned int virt_irq)
389{
390 unsigned int ino = virt_irq_table[virt_irq].dev_ino;
391 struct irq_desc *desc = irq_desc + virt_irq;
392 int err;
393
394 if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
395 return;
396
397 err = sun4v_intr_setstate(ino, HV_INTR_STATE_IDLE);
398 if (err != HV_EOK)
399 printk(KERN_ERR "sun4v_intr_setstate(%x): "
400 "err(%d)\n", ino, err);
401}
402
403static void sun4v_virq_enable(unsigned int virt_irq)
404{
405 unsigned long cpuid, dev_handle, dev_ino;
406 int err;
407
408 cpuid = irq_choose_cpu(virt_irq);
409
410 dev_handle = virt_irq_table[virt_irq].dev_handle;
411 dev_ino = virt_irq_table[virt_irq].dev_ino;
412
413 err = sun4v_vintr_set_target(dev_handle, dev_ino, cpuid);
414 if (err != HV_EOK)
415 printk(KERN_ERR "sun4v_vintr_set_target(%lx,%lx,%lu): "
416 "err(%d)\n",
417 dev_handle, dev_ino, cpuid, err);
418 err = sun4v_vintr_set_state(dev_handle, dev_ino,
419 HV_INTR_STATE_IDLE);
420 if (err != HV_EOK)
421 printk(KERN_ERR "sun4v_vintr_set_state(%lx,%lx,"
422 "HV_INTR_STATE_IDLE): err(%d)\n",
423 dev_handle, dev_ino, err);
424 err = sun4v_vintr_set_valid(dev_handle, dev_ino,
425 HV_INTR_ENABLED);
426 if (err != HV_EOK)
427 printk(KERN_ERR "sun4v_vintr_set_state(%lx,%lx,"
428 "HV_INTR_ENABLED): err(%d)\n",
429 dev_handle, dev_ino, err);
430}
431
432static void sun4v_virt_set_affinity(unsigned int virt_irq, cpumask_t mask)
433{
434 unsigned long cpuid, dev_handle, dev_ino;
435 int err;
436
437 cpuid = irq_choose_cpu(virt_irq);
438
439 dev_handle = virt_irq_table[virt_irq].dev_handle;
440 dev_ino = virt_irq_table[virt_irq].dev_ino;
441
442 err = sun4v_vintr_set_target(dev_handle, dev_ino, cpuid);
443 if (err != HV_EOK)
444 printk(KERN_ERR "sun4v_vintr_set_target(%lx,%lx,%lu): "
445 "err(%d)\n",
446 dev_handle, dev_ino, cpuid, err);
447}
448
449static void sun4v_virq_disable(unsigned int virt_irq)
450{
451 unsigned long dev_handle, dev_ino;
452 int err;
453
454 dev_handle = virt_irq_table[virt_irq].dev_handle;
455 dev_ino = virt_irq_table[virt_irq].dev_ino;
456
457 err = sun4v_vintr_set_valid(dev_handle, dev_ino,
458 HV_INTR_DISABLED);
459 if (err != HV_EOK)
460 printk(KERN_ERR "sun4v_vintr_set_state(%lx,%lx,"
461 "HV_INTR_DISABLED): err(%d)\n",
462 dev_handle, dev_ino, err);
463}
464
465static void sun4v_virq_eoi(unsigned int virt_irq)
466{
467 struct irq_desc *desc = irq_desc + virt_irq;
468 unsigned long dev_handle, dev_ino;
469 int err;
470
471 if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS)))
472 return;
473
474 dev_handle = virt_irq_table[virt_irq].dev_handle;
475 dev_ino = virt_irq_table[virt_irq].dev_ino;
476
477 err = sun4v_vintr_set_state(dev_handle, dev_ino,
478 HV_INTR_STATE_IDLE);
479 if (err != HV_EOK)
480 printk(KERN_ERR "sun4v_vintr_set_state(%lx,%lx,"
481 "HV_INTR_STATE_IDLE): err(%d)\n",
482 dev_handle, dev_ino, err);
483}
484
485static struct irq_chip sun4u_irq = {
486 .typename = "sun4u",
487 .enable = sun4u_irq_enable,
488 .disable = sun4u_irq_disable,
489 .eoi = sun4u_irq_eoi,
490 .set_affinity = sun4u_set_affinity,
491};
492
493static struct irq_chip sun4v_irq = {
494 .typename = "sun4v",
495 .enable = sun4v_irq_enable,
496 .disable = sun4v_irq_disable,
497 .eoi = sun4v_irq_eoi,
498 .set_affinity = sun4v_set_affinity,
499};
500
501static struct irq_chip sun4v_virq = {
502 .typename = "vsun4v",
503 .enable = sun4v_virq_enable,
504 .disable = sun4v_virq_disable,
505 .eoi = sun4v_virq_eoi,
506 .set_affinity = sun4v_virt_set_affinity,
507};
508
509static void pre_flow_handler(unsigned int virt_irq,
510 struct irq_desc *desc)
511{
512 struct irq_handler_data *data = get_irq_chip_data(virt_irq);
513 unsigned int ino = virt_irq_table[virt_irq].dev_ino;
514
515 data->pre_handler(ino, data->arg1, data->arg2);
516
517 handle_fasteoi_irq(virt_irq, desc);
518}
519
520void irq_install_pre_handler(int virt_irq,
521 void (*func)(unsigned int, void *, void *),
522 void *arg1, void *arg2)
523{
524 struct irq_handler_data *data = get_irq_chip_data(virt_irq);
525 struct irq_desc *desc = irq_desc + virt_irq;
526
527 data->pre_handler = func;
528 data->arg1 = arg1;
529 data->arg2 = arg2;
530
531 desc->handle_irq = pre_flow_handler;
532}
533
534unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
535{
536 struct ino_bucket *bucket;
537 struct irq_handler_data *data;
538 unsigned int virt_irq;
539 int ino;
540
541 BUG_ON(tlb_type == hypervisor);
542
543 ino = (upa_readq(imap) & (IMAP_IGN | IMAP_INO)) + inofixup;
544 bucket = &ivector_table[ino];
545 virt_irq = bucket_get_virt_irq(__pa(bucket));
546 if (!virt_irq) {
547 virt_irq = virt_irq_alloc(0, ino);
548 bucket_set_virt_irq(__pa(bucket), virt_irq);
549 set_irq_chip_and_handler_name(virt_irq,
550 &sun4u_irq,
551 handle_fasteoi_irq,
552 "IVEC");
553 }
554
555 data = get_irq_chip_data(virt_irq);
556 if (unlikely(data))
557 goto out;
558
559 data = kzalloc(sizeof(struct irq_handler_data), GFP_ATOMIC);
560 if (unlikely(!data)) {
561 prom_printf("IRQ: kzalloc(irq_handler_data) failed.\n");
562 prom_halt();
563 }
564 set_irq_chip_data(virt_irq, data);
565
566 data->imap = imap;
567 data->iclr = iclr;
568
569out:
570 return virt_irq;
571}
572
573static unsigned int sun4v_build_common(unsigned long sysino,
574 struct irq_chip *chip)
575{
576 struct ino_bucket *bucket;
577 struct irq_handler_data *data;
578 unsigned int virt_irq;
579
580 BUG_ON(tlb_type != hypervisor);
581
582 bucket = &ivector_table[sysino];
583 virt_irq = bucket_get_virt_irq(__pa(bucket));
584 if (!virt_irq) {
585 virt_irq = virt_irq_alloc(0, sysino);
586 bucket_set_virt_irq(__pa(bucket), virt_irq);
587 set_irq_chip_and_handler_name(virt_irq, chip,
588 handle_fasteoi_irq,
589 "IVEC");
590 }
591
592 data = get_irq_chip_data(virt_irq);
593 if (unlikely(data))
594 goto out;
595
596 data = kzalloc(sizeof(struct irq_handler_data), GFP_ATOMIC);
597 if (unlikely(!data)) {
598 prom_printf("IRQ: kzalloc(irq_handler_data) failed.\n");
599 prom_halt();
600 }
601 set_irq_chip_data(virt_irq, data);
602
603 /* Catch accidental accesses to these things. IMAP/ICLR handling
604 * is done by hypervisor calls on sun4v platforms, not by direct
605 * register accesses.
606 */
607 data->imap = ~0UL;
608 data->iclr = ~0UL;
609
610out:
611 return virt_irq;
612}
613
614unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
615{
616 unsigned long sysino = sun4v_devino_to_sysino(devhandle, devino);
617
618 return sun4v_build_common(sysino, &sun4v_irq);
619}
620
621unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
622{
623 struct irq_handler_data *data;
624 unsigned long hv_err, cookie;
625 struct ino_bucket *bucket;
626 struct irq_desc *desc;
627 unsigned int virt_irq;
628
629 bucket = kzalloc(sizeof(struct ino_bucket), GFP_ATOMIC);
630 if (unlikely(!bucket))
631 return 0;
632 __flush_dcache_range((unsigned long) bucket,
633 ((unsigned long) bucket +
634 sizeof(struct ino_bucket)));
635
636 virt_irq = virt_irq_alloc(devhandle, devino);
637 bucket_set_virt_irq(__pa(bucket), virt_irq);
638
639 set_irq_chip_and_handler_name(virt_irq, &sun4v_virq,
640 handle_fasteoi_irq,
641 "IVEC");
642
643 data = kzalloc(sizeof(struct irq_handler_data), GFP_ATOMIC);
644 if (unlikely(!data))
645 return 0;
646
647 /* In order to make the LDC channel startup sequence easier,
648 * especially wrt. locking, we do not let request_irq() enable
649 * the interrupt.
650 */
651 desc = irq_desc + virt_irq;
652 desc->status |= IRQ_NOAUTOEN;
653
654 set_irq_chip_data(virt_irq, data);
655
656 /* Catch accidental accesses to these things. IMAP/ICLR handling
657 * is done by hypervisor calls on sun4v platforms, not by direct
658 * register accesses.
659 */
660 data->imap = ~0UL;
661 data->iclr = ~0UL;
662
663 cookie = ~__pa(bucket);
664 hv_err = sun4v_vintr_set_cookie(devhandle, devino, cookie);
665 if (hv_err) {
666 prom_printf("IRQ: Fatal, cannot set cookie for [%x:%x] "
667 "err=%lu\n", devhandle, devino, hv_err);
668 prom_halt();
669 }
670
671 return virt_irq;
672}
673
674void ack_bad_irq(unsigned int virt_irq)
675{
676 unsigned int ino = virt_irq_table[virt_irq].dev_ino;
677
678 if (!ino)
679 ino = 0xdeadbeef;
680
681 printk(KERN_CRIT "Unexpected IRQ from ino[%x] virt_irq[%u]\n",
682 ino, virt_irq);
683}
684
685void *hardirq_stack[NR_CPUS];
686void *softirq_stack[NR_CPUS];
687
688static __attribute__((always_inline)) void *set_hardirq_stack(void)
689{
690 void *orig_sp, *sp = hardirq_stack[smp_processor_id()];
691
692 __asm__ __volatile__("mov %%sp, %0" : "=r" (orig_sp));
693 if (orig_sp < sp ||
694 orig_sp > (sp + THREAD_SIZE)) {
695 sp += THREAD_SIZE - 192 - STACK_BIAS;
696 __asm__ __volatile__("mov %0, %%sp" : : "r" (sp));
697 }
698
699 return orig_sp;
700}
701static __attribute__((always_inline)) void restore_hardirq_stack(void *orig_sp)
702{
703 __asm__ __volatile__("mov %0, %%sp" : : "r" (orig_sp));
704}
705
706void handler_irq(int irq, struct pt_regs *regs)
707{
708 unsigned long pstate, bucket_pa;
709 struct pt_regs *old_regs;
710 void *orig_sp;
711
712 clear_softint(1 << irq);
713
714 old_regs = set_irq_regs(regs);
715 irq_enter();
716
717 /* Grab an atomic snapshot of the pending IVECs. */
718 __asm__ __volatile__("rdpr %%pstate, %0\n\t"
719 "wrpr %0, %3, %%pstate\n\t"
720 "ldx [%2], %1\n\t"
721 "stx %%g0, [%2]\n\t"
722 "wrpr %0, 0x0, %%pstate\n\t"
723 : "=&r" (pstate), "=&r" (bucket_pa)
724 : "r" (irq_work_pa(smp_processor_id())),
725 "i" (PSTATE_IE)
726 : "memory");
727
728 orig_sp = set_hardirq_stack();
729
730 while (bucket_pa) {
731 struct irq_desc *desc;
732 unsigned long next_pa;
733 unsigned int virt_irq;
734
735 next_pa = bucket_get_chain_pa(bucket_pa);
736 virt_irq = bucket_get_virt_irq(bucket_pa);
737 bucket_clear_chain_pa(bucket_pa);
738
739 desc = irq_desc + virt_irq;
740
741 desc->handle_irq(virt_irq, desc);
742
743 bucket_pa = next_pa;
744 }
745
746 restore_hardirq_stack(orig_sp);
747
748 irq_exit();
749 set_irq_regs(old_regs);
750}
751
752void do_softirq(void)
753{
754 unsigned long flags;
755
756 if (in_interrupt())
757 return;
758
759 local_irq_save(flags);
760
761 if (local_softirq_pending()) {
762 void *orig_sp, *sp = softirq_stack[smp_processor_id()];
763
764 sp += THREAD_SIZE - 192 - STACK_BIAS;
765
766 __asm__ __volatile__("mov %%sp, %0\n\t"
767 "mov %1, %%sp"
768 : "=&r" (orig_sp)
769 : "r" (sp));
770 __do_softirq();
771 __asm__ __volatile__("mov %0, %%sp"
772 : : "r" (orig_sp));
773 }
774
775 local_irq_restore(flags);
776}
777
778static void unhandled_perf_irq(struct pt_regs *regs)
779{
780 unsigned long pcr, pic;
781
782 read_pcr(pcr);
783 read_pic(pic);
784
785 write_pcr(0);
786
787 printk(KERN_EMERG "CPU %d: Got unexpected perf counter IRQ.\n",
788 smp_processor_id());
789 printk(KERN_EMERG "CPU %d: PCR[%016lx] PIC[%016lx]\n",
790 smp_processor_id(), pcr, pic);
791}
792
793/* Almost a direct copy of the powerpc PMC code. */
794static DEFINE_SPINLOCK(perf_irq_lock);
795static void *perf_irq_owner_caller; /* mostly for debugging */
796static void (*perf_irq)(struct pt_regs *regs) = unhandled_perf_irq;
797
798/* Invoked from level 15 PIL handler in trap table. */
799void perfctr_irq(int irq, struct pt_regs *regs)
800{
801 clear_softint(1 << irq);
802 perf_irq(regs);
803}
804
805int register_perfctr_intr(void (*handler)(struct pt_regs *))
806{
807 int ret;
808
809 if (!handler)
810 return -EINVAL;
811
812 spin_lock(&perf_irq_lock);
813 if (perf_irq != unhandled_perf_irq) {
814 printk(KERN_WARNING "register_perfctr_intr: "
815 "perf IRQ busy (reserved by caller %p)\n",
816 perf_irq_owner_caller);
817 ret = -EBUSY;
818 goto out;
819 }
820
821 perf_irq_owner_caller = __builtin_return_address(0);
822 perf_irq = handler;
823
824 ret = 0;
825out:
826 spin_unlock(&perf_irq_lock);
827
828 return ret;
829}
830EXPORT_SYMBOL_GPL(register_perfctr_intr);
831
832void release_perfctr_intr(void (*handler)(struct pt_regs *))
833{
834 spin_lock(&perf_irq_lock);
835 perf_irq_owner_caller = NULL;
836 perf_irq = unhandled_perf_irq;
837 spin_unlock(&perf_irq_lock);
838}
839EXPORT_SYMBOL_GPL(release_perfctr_intr);
840
841#ifdef CONFIG_HOTPLUG_CPU
842void fixup_irqs(void)
843{
844 unsigned int irq;
845
846 for (irq = 0; irq < NR_IRQS; irq++) {
847 unsigned long flags;
848
849 spin_lock_irqsave(&irq_desc[irq].lock, flags);
850 if (irq_desc[irq].action &&
851 !(irq_desc[irq].status & IRQ_PER_CPU)) {
852 if (irq_desc[irq].chip->set_affinity)
853 irq_desc[irq].chip->set_affinity(irq,
854 irq_desc[irq].affinity);
855 }
856 spin_unlock_irqrestore(&irq_desc[irq].lock, flags);
857 }
858
859 tick_ops->disable_irq();
860}
861#endif
862
863struct sun5_timer {
864 u64 count0;
865 u64 limit0;
866 u64 count1;
867 u64 limit1;
868};
869
870static struct sun5_timer *prom_timers;
871static u64 prom_limit0, prom_limit1;
872
873static void map_prom_timers(void)
874{
875 struct device_node *dp;
876 const unsigned int *addr;
877
878 /* PROM timer node hangs out in the top level of device siblings... */
879 dp = of_find_node_by_path("/");
880 dp = dp->child;
881 while (dp) {
882 if (!strcmp(dp->name, "counter-timer"))
883 break;
884 dp = dp->sibling;
885 }
886
887 /* Assume if node is not present, PROM uses different tick mechanism
888 * which we should not care about.
889 */
890 if (!dp) {
891 prom_timers = (struct sun5_timer *) 0;
892 return;
893 }
894
895 /* If PROM is really using this, it must be mapped by him. */
896 addr = of_get_property(dp, "address", NULL);
897 if (!addr) {
898 prom_printf("PROM does not have timer mapped, trying to continue.\n");
899 prom_timers = (struct sun5_timer *) 0;
900 return;
901 }
902 prom_timers = (struct sun5_timer *) ((unsigned long)addr[0]);
903}
904
905static void kill_prom_timer(void)
906{
907 if (!prom_timers)
908 return;
909
910 /* Save them away for later. */
911 prom_limit0 = prom_timers->limit0;
912 prom_limit1 = prom_timers->limit1;
913
914 /* Just as in sun4c/sun4m PROM uses timer which ticks at IRQ 14.
915 * We turn both off here just to be paranoid.
916 */
917 prom_timers->limit0 = 0;
918 prom_timers->limit1 = 0;
919
920 /* Wheee, eat the interrupt packet too... */
921 __asm__ __volatile__(
922" mov 0x40, %%g2\n"
923" ldxa [%%g0] %0, %%g1\n"
924" ldxa [%%g2] %1, %%g1\n"
925" stxa %%g0, [%%g0] %0\n"
926" membar #Sync\n"
927 : /* no outputs */
928 : "i" (ASI_INTR_RECEIVE), "i" (ASI_INTR_R)
929 : "g1", "g2");
930}
931
932void notrace init_irqwork_curcpu(void)
933{
934 int cpu = hard_smp_processor_id();
935
936 trap_block[cpu].irq_worklist_pa = 0UL;
937}
938
939/* Please be very careful with register_one_mondo() and
940 * sun4v_register_mondo_queues().
941 *
942 * On SMP this gets invoked from the CPU trampoline before
943 * the cpu has fully taken over the trap table from OBP,
944 * and it's kernel stack + %g6 thread register state is
945 * not fully cooked yet.
946 *
947 * Therefore you cannot make any OBP calls, not even prom_printf,
948 * from these two routines.
949 */
950static void __cpuinit register_one_mondo(unsigned long paddr, unsigned long type, unsigned long qmask)
951{
952 unsigned long num_entries = (qmask + 1) / 64;
953 unsigned long status;
954
955 status = sun4v_cpu_qconf(type, paddr, num_entries);
956 if (status != HV_EOK) {
957 prom_printf("SUN4V: sun4v_cpu_qconf(%lu:%lx:%lu) failed, "
958 "err %lu\n", type, paddr, num_entries, status);
959 prom_halt();
960 }
961}
962
963void __cpuinit notrace sun4v_register_mondo_queues(int this_cpu)
964{
965 struct trap_per_cpu *tb = &trap_block[this_cpu];
966
967 register_one_mondo(tb->cpu_mondo_pa, HV_CPU_QUEUE_CPU_MONDO,
968 tb->cpu_mondo_qmask);
969 register_one_mondo(tb->dev_mondo_pa, HV_CPU_QUEUE_DEVICE_MONDO,
970 tb->dev_mondo_qmask);
971 register_one_mondo(tb->resum_mondo_pa, HV_CPU_QUEUE_RES_ERROR,
972 tb->resum_qmask);
973 register_one_mondo(tb->nonresum_mondo_pa, HV_CPU_QUEUE_NONRES_ERROR,
974 tb->nonresum_qmask);
975}
976
977static void __init alloc_one_mondo(unsigned long *pa_ptr, unsigned long qmask)
978{
979 unsigned long size = PAGE_ALIGN(qmask + 1);
980 void *p = __alloc_bootmem(size, size, 0);
981 if (!p) {
982 prom_printf("SUN4V: Error, cannot allocate mondo queue.\n");
983 prom_halt();
984 }
985
986 *pa_ptr = __pa(p);
987}
988
989static void __init alloc_one_kbuf(unsigned long *pa_ptr, unsigned long qmask)
990{
991 unsigned long size = PAGE_ALIGN(qmask + 1);
992 void *p = __alloc_bootmem(size, size, 0);
993
994 if (!p) {
995 prom_printf("SUN4V: Error, cannot allocate kbuf page.\n");
996 prom_halt();
997 }
998
999 *pa_ptr = __pa(p);
1000}
1001
1002static void __init init_cpu_send_mondo_info(struct trap_per_cpu *tb)
1003{
1004#ifdef CONFIG_SMP
1005 void *page;
1006
1007 BUILD_BUG_ON((NR_CPUS * sizeof(u16)) > (PAGE_SIZE - 64));
1008
1009 page = alloc_bootmem_pages(PAGE_SIZE);
1010 if (!page) {
1011 prom_printf("SUN4V: Error, cannot allocate cpu mondo page.\n");
1012 prom_halt();
1013 }
1014
1015 tb->cpu_mondo_block_pa = __pa(page);
1016 tb->cpu_list_pa = __pa(page + 64);
1017#endif
1018}
1019
1020/* Allocate mondo and error queues for all possible cpus. */
1021static void __init sun4v_init_mondo_queues(void)
1022{
1023 int cpu;
1024
1025 for_each_possible_cpu(cpu) {
1026 struct trap_per_cpu *tb = &trap_block[cpu];
1027
1028 alloc_one_mondo(&tb->cpu_mondo_pa, tb->cpu_mondo_qmask);
1029 alloc_one_mondo(&tb->dev_mondo_pa, tb->dev_mondo_qmask);
1030 alloc_one_mondo(&tb->resum_mondo_pa, tb->resum_qmask);
1031 alloc_one_kbuf(&tb->resum_kernel_buf_pa, tb->resum_qmask);
1032 alloc_one_mondo(&tb->nonresum_mondo_pa, tb->nonresum_qmask);
1033 alloc_one_kbuf(&tb->nonresum_kernel_buf_pa,
1034 tb->nonresum_qmask);
1035 }
1036}
1037
1038static void __init init_send_mondo_info(void)
1039{
1040 int cpu;
1041
1042 for_each_possible_cpu(cpu) {
1043 struct trap_per_cpu *tb = &trap_block[cpu];
1044
1045 init_cpu_send_mondo_info(tb);
1046 }
1047}
1048
1049static struct irqaction timer_irq_action = {
1050 .name = "timer",
1051};
1052
1053/* Only invoked on boot processor. */
1054void __init init_IRQ(void)
1055{
1056 unsigned long size;
1057
1058 map_prom_timers();
1059 kill_prom_timer();
1060
1061 size = sizeof(struct ino_bucket) * NUM_IVECS;
1062 ivector_table = alloc_bootmem(size);
1063 if (!ivector_table) {
1064 prom_printf("Fatal error, cannot allocate ivector_table\n");
1065 prom_halt();
1066 }
1067 __flush_dcache_range((unsigned long) ivector_table,
1068 ((unsigned long) ivector_table) + size);
1069
1070 ivector_table_pa = __pa(ivector_table);
1071
1072 if (tlb_type == hypervisor)
1073 sun4v_init_mondo_queues();
1074
1075 init_send_mondo_info();
1076
1077 if (tlb_type == hypervisor) {
1078 /* Load up the boot cpu's entries. */
1079 sun4v_register_mondo_queues(hard_smp_processor_id());
1080 }
1081
1082 /* We need to clear any IRQ's pending in the soft interrupt
1083 * registers, a spurious one could be left around from the
1084 * PROM timer which we just disabled.
1085 */
1086 clear_softint(get_softint());
1087
1088 /* Now that ivector table is initialized, it is safe
1089 * to receive IRQ vector traps. We will normally take
1090 * one or two right now, in case some device PROM used
1091 * to boot us wants to speak to us. We just ignore them.
1092 */
1093 __asm__ __volatile__("rdpr %%pstate, %%g1\n\t"
1094 "or %%g1, %0, %%g1\n\t"
1095 "wrpr %%g1, 0x0, %%pstate"
1096 : /* No outputs */
1097 : "i" (PSTATE_IE)
1098 : "g1");
1099
1100 irq_desc[0].action = &timer_irq_action;
1101}
diff --git a/arch/sparc/kernel/itlb_miss.S b/arch/sparc/kernel/itlb_miss.S
new file mode 100644
index 000000000000..5a8377b54955
--- /dev/null
+++ b/arch/sparc/kernel/itlb_miss.S
@@ -0,0 +1,39 @@
1/* ITLB ** ICACHE line 1: Context 0 check and TSB load */
2 ldxa [%g0] ASI_IMMU_TSB_8KB_PTR, %g1 ! Get TSB 8K pointer
3 ldxa [%g0] ASI_IMMU, %g6 ! Get TAG TARGET
4 srlx %g6, 48, %g5 ! Get context
5 sllx %g6, 22, %g6 ! Zero out context
6 brz,pn %g5, kvmap_itlb ! Context 0 processing
7 srlx %g6, 22, %g6 ! Delay slot
8 TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry
9 cmp %g4, %g6 ! Compare TAG
10
11/* ITLB ** ICACHE line 2: TSB compare and TLB load */
12 bne,pn %xcc, tsb_miss_itlb ! Miss
13 mov FAULT_CODE_ITLB, %g3
14 sethi %hi(_PAGE_EXEC_4U), %g4
15 andcc %g5, %g4, %g0 ! Executable?
16 be,pn %xcc, tsb_do_fault
17 nop ! Delay slot, fill me
18 stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB
19 retry ! Trap done
20
21/* ITLB ** ICACHE line 3: */
22 nop
23 nop
24 nop
25 nop
26 nop
27 nop
28 nop
29 nop
30
31/* ITLB ** ICACHE line 4: */
32 nop
33 nop
34 nop
35 nop
36 nop
37 nop
38 nop
39 nop
diff --git a/arch/sparc/kernel/ivec.S b/arch/sparc/kernel/ivec.S
new file mode 100644
index 000000000000..d29f92ebca5e
--- /dev/null
+++ b/arch/sparc/kernel/ivec.S
@@ -0,0 +1,51 @@
1 /* The registers for cross calls will be:
2 *
3 * DATA 0: [low 32-bits] Address of function to call, jmp to this
4 * [high 32-bits] MMU Context Argument 0, place in %g5
5 * DATA 1: Address Argument 1, place in %g1
6 * DATA 2: Address Argument 2, place in %g7
7 *
8 * With this method we can do most of the cross-call tlb/cache
9 * flushing very quickly.
10 */
11 .align 32
12 .globl do_ivec
13 .type do_ivec,#function
14do_ivec:
15 mov 0x40, %g3
16 ldxa [%g3 + %g0] ASI_INTR_R, %g3
17 sethi %hi(KERNBASE), %g4
18 cmp %g3, %g4
19 bgeu,pn %xcc, do_ivec_xcall
20 srlx %g3, 32, %g5
21 stxa %g0, [%g0] ASI_INTR_RECEIVE
22 membar #Sync
23
24 sethi %hi(ivector_table_pa), %g2
25 ldx [%g2 + %lo(ivector_table_pa)], %g2
26 sllx %g3, 4, %g3
27 add %g2, %g3, %g3
28
29 TRAP_LOAD_IRQ_WORK_PA(%g6, %g1)
30
31 ldx [%g6], %g5
32 stxa %g5, [%g3] ASI_PHYS_USE_EC
33 stx %g3, [%g6]
34 wr %g0, 1 << PIL_DEVICE_IRQ, %set_softint
35 retry
36do_ivec_xcall:
37 mov 0x50, %g1
38 ldxa [%g1 + %g0] ASI_INTR_R, %g1
39 srl %g3, 0, %g3
40
41 mov 0x60, %g7
42 ldxa [%g7 + %g0] ASI_INTR_R, %g7
43 stxa %g0, [%g0] ASI_INTR_RECEIVE
44 membar #Sync
45 ba,pt %xcc, 1f
46 nop
47
48 .align 32
491: jmpl %g3, %g0
50 nop
51 .size do_ivec,.-do_ivec
diff --git a/arch/sparc/kernel/kgdb_64.c b/arch/sparc/kernel/kgdb_64.c
new file mode 100644
index 000000000000..fefbe6dc51be
--- /dev/null
+++ b/arch/sparc/kernel/kgdb_64.c
@@ -0,0 +1,186 @@
1/* kgdb.c: KGDB support for 64-bit sparc.
2 *
3 * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
4 */
5
6#include <linux/kgdb.h>
7#include <linux/kdebug.h>
8
9#include <asm/kdebug.h>
10#include <asm/ptrace.h>
11#include <asm/irq.h>
12
13void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
14{
15 struct reg_window *win;
16 int i;
17
18 gdb_regs[GDB_G0] = 0;
19 for (i = 0; i < 15; i++)
20 gdb_regs[GDB_G1 + i] = regs->u_regs[UREG_G1 + i];
21
22 win = (struct reg_window *) (regs->u_regs[UREG_FP] + STACK_BIAS);
23 for (i = 0; i < 8; i++)
24 gdb_regs[GDB_L0 + i] = win->locals[i];
25 for (i = 0; i < 8; i++)
26 gdb_regs[GDB_I0 + i] = win->ins[i];
27
28 for (i = GDB_F0; i <= GDB_F62; i++)
29 gdb_regs[i] = 0;
30
31 gdb_regs[GDB_PC] = regs->tpc;
32 gdb_regs[GDB_NPC] = regs->tnpc;
33 gdb_regs[GDB_STATE] = regs->tstate;
34 gdb_regs[GDB_FSR] = 0;
35 gdb_regs[GDB_FPRS] = 0;
36 gdb_regs[GDB_Y] = regs->y;
37}
38
39void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
40{
41 struct thread_info *t = task_thread_info(p);
42 extern unsigned int switch_to_pc;
43 extern unsigned int ret_from_syscall;
44 struct reg_window *win;
45 unsigned long pc, cwp;
46 int i;
47
48 for (i = GDB_G0; i < GDB_G6; i++)
49 gdb_regs[i] = 0;
50 gdb_regs[GDB_G6] = (unsigned long) t;
51 gdb_regs[GDB_G7] = (unsigned long) p;
52 for (i = GDB_O0; i < GDB_SP; i++)
53 gdb_regs[i] = 0;
54 gdb_regs[GDB_SP] = t->ksp;
55 gdb_regs[GDB_O7] = 0;
56
57 win = (struct reg_window *) (t->ksp + STACK_BIAS);
58 for (i = 0; i < 8; i++)
59 gdb_regs[GDB_L0 + i] = win->locals[i];
60 for (i = 0; i < 8; i++)
61 gdb_regs[GDB_I0 + i] = win->ins[i];
62
63 for (i = GDB_F0; i <= GDB_F62; i++)
64 gdb_regs[i] = 0;
65
66 if (t->new_child)
67 pc = (unsigned long) &ret_from_syscall;
68 else
69 pc = (unsigned long) &switch_to_pc;
70
71 gdb_regs[GDB_PC] = pc;
72 gdb_regs[GDB_NPC] = pc + 4;
73
74 cwp = __thread_flag_byte_ptr(t)[TI_FLAG_BYTE_CWP];
75
76 gdb_regs[GDB_STATE] = (TSTATE_PRIV | TSTATE_IE | cwp);
77 gdb_regs[GDB_FSR] = 0;
78 gdb_regs[GDB_FPRS] = 0;
79 gdb_regs[GDB_Y] = 0;
80}
81
82void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
83{
84 struct reg_window *win;
85 int i;
86
87 for (i = 0; i < 15; i++)
88 regs->u_regs[UREG_G1 + i] = gdb_regs[GDB_G1 + i];
89
90 /* If the TSTATE register is changing, we have to preserve
91 * the CWP field, otherwise window save/restore explodes.
92 */
93 if (regs->tstate != gdb_regs[GDB_STATE]) {
94 unsigned long cwp = regs->tstate & TSTATE_CWP;
95
96 regs->tstate = (gdb_regs[GDB_STATE] & ~TSTATE_CWP) | cwp;
97 }
98
99 regs->tpc = gdb_regs[GDB_PC];
100 regs->tnpc = gdb_regs[GDB_NPC];
101 regs->y = gdb_regs[GDB_Y];
102
103 win = (struct reg_window *) (regs->u_regs[UREG_FP] + STACK_BIAS);
104 for (i = 0; i < 8; i++)
105 win->locals[i] = gdb_regs[GDB_L0 + i];
106 for (i = 0; i < 8; i++)
107 win->ins[i] = gdb_regs[GDB_I0 + i];
108}
109
110#ifdef CONFIG_SMP
111void smp_kgdb_capture_client(struct pt_regs *regs)
112{
113 unsigned long flags;
114
115 __asm__ __volatile__("rdpr %%pstate, %0\n\t"
116 "wrpr %0, %1, %%pstate"
117 : "=r" (flags)
118 : "i" (PSTATE_IE));
119
120 flushw_all();
121
122 if (atomic_read(&kgdb_active) != -1)
123 kgdb_nmicallback(raw_smp_processor_id(), regs);
124
125 __asm__ __volatile__("wrpr %0, 0, %%pstate"
126 : : "r" (flags));
127}
128#endif
129
130int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
131 char *remcomInBuffer, char *remcomOutBuffer,
132 struct pt_regs *linux_regs)
133{
134 unsigned long addr;
135 char *ptr;
136
137 switch (remcomInBuffer[0]) {
138 case 'c':
139 /* try to read optional parameter, pc unchanged if no parm */
140 ptr = &remcomInBuffer[1];
141 if (kgdb_hex2long(&ptr, &addr)) {
142 linux_regs->tpc = addr;
143 linux_regs->tnpc = addr + 4;
144 }
145 /* fallthru */
146
147 case 'D':
148 case 'k':
149 if (linux_regs->tpc == (unsigned long) arch_kgdb_breakpoint) {
150 linux_regs->tpc = linux_regs->tnpc;
151 linux_regs->tnpc += 4;
152 }
153 return 0;
154 }
155 return -1;
156}
157
158asmlinkage void kgdb_trap(unsigned long trap_level, struct pt_regs *regs)
159{
160 unsigned long flags;
161
162 if (user_mode(regs)) {
163 bad_trap(regs, trap_level);
164 return;
165 }
166
167 flushw_all();
168
169 local_irq_save(flags);
170 kgdb_handle_exception(0x172, SIGTRAP, 0, regs);
171 local_irq_restore(flags);
172}
173
174int kgdb_arch_init(void)
175{
176 return 0;
177}
178
179void kgdb_arch_exit(void)
180{
181}
182
183struct kgdb_arch arch_kgdb_ops = {
184 /* Breakpoint instruction: ta 0x72 */
185 .gdb_bpt_instr = { 0x91, 0xd0, 0x20, 0x72 },
186};
diff --git a/arch/sparc/kernel/kprobes.c b/arch/sparc/kernel/kprobes.c
new file mode 100644
index 000000000000..201a6e547e4a
--- /dev/null
+++ b/arch/sparc/kernel/kprobes.c
@@ -0,0 +1,593 @@
1/* arch/sparc64/kernel/kprobes.c
2 *
3 * Copyright (C) 2004 David S. Miller <davem@davemloft.net>
4 */
5
6#include <linux/kernel.h>
7#include <linux/kprobes.h>
8#include <linux/module.h>
9#include <linux/kdebug.h>
10#include <asm/signal.h>
11#include <asm/cacheflush.h>
12#include <asm/uaccess.h>
13
14/* We do not have hardware single-stepping on sparc64.
15 * So we implement software single-stepping with breakpoint
16 * traps. The top-level scheme is similar to that used
17 * in the x86 kprobes implementation.
18 *
19 * In the kprobe->ainsn.insn[] array we store the original
20 * instruction at index zero and a break instruction at
21 * index one.
22 *
23 * When we hit a kprobe we:
24 * - Run the pre-handler
25 * - Remember "regs->tnpc" and interrupt level stored in
26 * "regs->tstate" so we can restore them later
27 * - Disable PIL interrupts
28 * - Set regs->tpc to point to kprobe->ainsn.insn[0]
29 * - Set regs->tnpc to point to kprobe->ainsn.insn[1]
30 * - Mark that we are actively in a kprobe
31 *
32 * At this point we wait for the second breakpoint at
33 * kprobe->ainsn.insn[1] to hit. When it does we:
34 * - Run the post-handler
35 * - Set regs->tpc to "remembered" regs->tnpc stored above,
36 * restore the PIL interrupt level in "regs->tstate" as well
37 * - Make any adjustments necessary to regs->tnpc in order
38 * to handle relative branches correctly. See below.
39 * - Mark that we are no longer actively in a kprobe.
40 */
41
42DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL;
43DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
44
45struct kretprobe_blackpoint kretprobe_blacklist[] = {{NULL, NULL}};
46
47int __kprobes arch_prepare_kprobe(struct kprobe *p)
48{
49 p->ainsn.insn[0] = *p->addr;
50 flushi(&p->ainsn.insn[0]);
51
52 p->ainsn.insn[1] = BREAKPOINT_INSTRUCTION_2;
53 flushi(&p->ainsn.insn[1]);
54
55 p->opcode = *p->addr;
56 return 0;
57}
58
59void __kprobes arch_arm_kprobe(struct kprobe *p)
60{
61 *p->addr = BREAKPOINT_INSTRUCTION;
62 flushi(p->addr);
63}
64
65void __kprobes arch_disarm_kprobe(struct kprobe *p)
66{
67 *p->addr = p->opcode;
68 flushi(p->addr);
69}
70
71static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb)
72{
73 kcb->prev_kprobe.kp = kprobe_running();
74 kcb->prev_kprobe.status = kcb->kprobe_status;
75 kcb->prev_kprobe.orig_tnpc = kcb->kprobe_orig_tnpc;
76 kcb->prev_kprobe.orig_tstate_pil = kcb->kprobe_orig_tstate_pil;
77}
78
79static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb)
80{
81 __get_cpu_var(current_kprobe) = kcb->prev_kprobe.kp;
82 kcb->kprobe_status = kcb->prev_kprobe.status;
83 kcb->kprobe_orig_tnpc = kcb->prev_kprobe.orig_tnpc;
84 kcb->kprobe_orig_tstate_pil = kcb->prev_kprobe.orig_tstate_pil;
85}
86
87static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
88 struct kprobe_ctlblk *kcb)
89{
90 __get_cpu_var(current_kprobe) = p;
91 kcb->kprobe_orig_tnpc = regs->tnpc;
92 kcb->kprobe_orig_tstate_pil = (regs->tstate & TSTATE_PIL);
93}
94
95static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs,
96 struct kprobe_ctlblk *kcb)
97{
98 regs->tstate |= TSTATE_PIL;
99
100 /*single step inline, if it a breakpoint instruction*/
101 if (p->opcode == BREAKPOINT_INSTRUCTION) {
102 regs->tpc = (unsigned long) p->addr;
103 regs->tnpc = kcb->kprobe_orig_tnpc;
104 } else {
105 regs->tpc = (unsigned long) &p->ainsn.insn[0];
106 regs->tnpc = (unsigned long) &p->ainsn.insn[1];
107 }
108}
109
110static int __kprobes kprobe_handler(struct pt_regs *regs)
111{
112 struct kprobe *p;
113 void *addr = (void *) regs->tpc;
114 int ret = 0;
115 struct kprobe_ctlblk *kcb;
116
117 /*
118 * We don't want to be preempted for the entire
119 * duration of kprobe processing
120 */
121 preempt_disable();
122 kcb = get_kprobe_ctlblk();
123
124 if (kprobe_running()) {
125 p = get_kprobe(addr);
126 if (p) {
127 if (kcb->kprobe_status == KPROBE_HIT_SS) {
128 regs->tstate = ((regs->tstate & ~TSTATE_PIL) |
129 kcb->kprobe_orig_tstate_pil);
130 goto no_kprobe;
131 }
132 /* We have reentered the kprobe_handler(), since
133 * another probe was hit while within the handler.
134 * We here save the original kprobes variables and
135 * just single step on the instruction of the new probe
136 * without calling any user handlers.
137 */
138 save_previous_kprobe(kcb);
139 set_current_kprobe(p, regs, kcb);
140 kprobes_inc_nmissed_count(p);
141 kcb->kprobe_status = KPROBE_REENTER;
142 prepare_singlestep(p, regs, kcb);
143 return 1;
144 } else {
145 if (*(u32 *)addr != BREAKPOINT_INSTRUCTION) {
146 /* The breakpoint instruction was removed by
147 * another cpu right after we hit, no further
148 * handling of this interrupt is appropriate
149 */
150 ret = 1;
151 goto no_kprobe;
152 }
153 p = __get_cpu_var(current_kprobe);
154 if (p->break_handler && p->break_handler(p, regs))
155 goto ss_probe;
156 }
157 goto no_kprobe;
158 }
159
160 p = get_kprobe(addr);
161 if (!p) {
162 if (*(u32 *)addr != BREAKPOINT_INSTRUCTION) {
163 /*
164 * The breakpoint instruction was removed right
165 * after we hit it. Another cpu has removed
166 * either a probepoint or a debugger breakpoint
167 * at this address. In either case, no further
168 * handling of this interrupt is appropriate.
169 */
170 ret = 1;
171 }
172 /* Not one of ours: let kernel handle it */
173 goto no_kprobe;
174 }
175
176 set_current_kprobe(p, regs, kcb);
177 kcb->kprobe_status = KPROBE_HIT_ACTIVE;
178 if (p->pre_handler && p->pre_handler(p, regs))
179 return 1;
180
181ss_probe:
182 prepare_singlestep(p, regs, kcb);
183 kcb->kprobe_status = KPROBE_HIT_SS;
184 return 1;
185
186no_kprobe:
187 preempt_enable_no_resched();
188 return ret;
189}
190
191/* If INSN is a relative control transfer instruction,
192 * return the corrected branch destination value.
193 *
194 * regs->tpc and regs->tnpc still hold the values of the
195 * program counters at the time of trap due to the execution
196 * of the BREAKPOINT_INSTRUCTION_2 at p->ainsn.insn[1]
197 *
198 */
199static unsigned long __kprobes relbranch_fixup(u32 insn, struct kprobe *p,
200 struct pt_regs *regs)
201{
202 unsigned long real_pc = (unsigned long) p->addr;
203
204 /* Branch not taken, no mods necessary. */
205 if (regs->tnpc == regs->tpc + 0x4UL)
206 return real_pc + 0x8UL;
207
208 /* The three cases are call, branch w/prediction,
209 * and traditional branch.
210 */
211 if ((insn & 0xc0000000) == 0x40000000 ||
212 (insn & 0xc1c00000) == 0x00400000 ||
213 (insn & 0xc1c00000) == 0x00800000) {
214 unsigned long ainsn_addr;
215
216 ainsn_addr = (unsigned long) &p->ainsn.insn[0];
217
218 /* The instruction did all the work for us
219 * already, just apply the offset to the correct
220 * instruction location.
221 */
222 return (real_pc + (regs->tnpc - ainsn_addr));
223 }
224
225 /* It is jmpl or some other absolute PC modification instruction,
226 * leave NPC as-is.
227 */
228 return regs->tnpc;
229}
230
231/* If INSN is an instruction which writes it's PC location
232 * into a destination register, fix that up.
233 */
234static void __kprobes retpc_fixup(struct pt_regs *regs, u32 insn,
235 unsigned long real_pc)
236{
237 unsigned long *slot = NULL;
238
239 /* Simplest case is 'call', which always uses %o7 */
240 if ((insn & 0xc0000000) == 0x40000000) {
241 slot = &regs->u_regs[UREG_I7];
242 }
243
244 /* 'jmpl' encodes the register inside of the opcode */
245 if ((insn & 0xc1f80000) == 0x81c00000) {
246 unsigned long rd = ((insn >> 25) & 0x1f);
247
248 if (rd <= 15) {
249 slot = &regs->u_regs[rd];
250 } else {
251 /* Hard case, it goes onto the stack. */
252 flushw_all();
253
254 rd -= 16;
255 slot = (unsigned long *)
256 (regs->u_regs[UREG_FP] + STACK_BIAS);
257 slot += rd;
258 }
259 }
260 if (slot != NULL)
261 *slot = real_pc;
262}
263
264/*
265 * Called after single-stepping. p->addr is the address of the
266 * instruction which has been replaced by the breakpoint
267 * instruction. To avoid the SMP problems that can occur when we
268 * temporarily put back the original opcode to single-step, we
269 * single-stepped a copy of the instruction. The address of this
270 * copy is &p->ainsn.insn[0].
271 *
272 * This function prepares to return from the post-single-step
273 * breakpoint trap.
274 */
275static void __kprobes resume_execution(struct kprobe *p,
276 struct pt_regs *regs, struct kprobe_ctlblk *kcb)
277{
278 u32 insn = p->ainsn.insn[0];
279
280 regs->tnpc = relbranch_fixup(insn, p, regs);
281
282 /* This assignment must occur after relbranch_fixup() */
283 regs->tpc = kcb->kprobe_orig_tnpc;
284
285 retpc_fixup(regs, insn, (unsigned long) p->addr);
286
287 regs->tstate = ((regs->tstate & ~TSTATE_PIL) |
288 kcb->kprobe_orig_tstate_pil);
289}
290
291static int __kprobes post_kprobe_handler(struct pt_regs *regs)
292{
293 struct kprobe *cur = kprobe_running();
294 struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
295
296 if (!cur)
297 return 0;
298
299 if ((kcb->kprobe_status != KPROBE_REENTER) && cur->post_handler) {
300 kcb->kprobe_status = KPROBE_HIT_SSDONE;
301 cur->post_handler(cur, regs, 0);
302 }
303
304 resume_execution(cur, regs, kcb);
305
306 /*Restore back the original saved kprobes variables and continue. */
307 if (kcb->kprobe_status == KPROBE_REENTER) {
308 restore_previous_kprobe(kcb);
309 goto out;
310 }
311 reset_current_kprobe();
312out:
313 preempt_enable_no_resched();
314
315 return 1;
316}
317
318int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
319{
320 struct kprobe *cur = kprobe_running();
321 struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
322 const struct exception_table_entry *entry;
323
324 switch(kcb->kprobe_status) {
325 case KPROBE_HIT_SS:
326 case KPROBE_REENTER:
327 /*
328 * We are here because the instruction being single
329 * stepped caused a page fault. We reset the current
330 * kprobe and the tpc points back to the probe address
331 * and allow the page fault handler to continue as a
332 * normal page fault.
333 */
334 regs->tpc = (unsigned long)cur->addr;
335 regs->tnpc = kcb->kprobe_orig_tnpc;
336 regs->tstate = ((regs->tstate & ~TSTATE_PIL) |
337 kcb->kprobe_orig_tstate_pil);
338 if (kcb->kprobe_status == KPROBE_REENTER)
339 restore_previous_kprobe(kcb);
340 else
341 reset_current_kprobe();
342 preempt_enable_no_resched();
343 break;
344 case KPROBE_HIT_ACTIVE:
345 case KPROBE_HIT_SSDONE:
346 /*
347 * We increment the nmissed count for accounting,
348 * we can also use npre/npostfault count for accouting
349 * these specific fault cases.
350 */
351 kprobes_inc_nmissed_count(cur);
352
353 /*
354 * We come here because instructions in the pre/post
355 * handler caused the page_fault, this could happen
356 * if handler tries to access user space by
357 * copy_from_user(), get_user() etc. Let the
358 * user-specified handler try to fix it first.
359 */
360 if (cur->fault_handler && cur->fault_handler(cur, regs, trapnr))
361 return 1;
362
363 /*
364 * In case the user-specified fault handler returned
365 * zero, try to fix up.
366 */
367
368 entry = search_exception_tables(regs->tpc);
369 if (entry) {
370 regs->tpc = entry->fixup;
371 regs->tnpc = regs->tpc + 4;
372 return 1;
373 }
374
375 /*
376 * fixup_exception() could not handle it,
377 * Let do_page_fault() fix it.
378 */
379 break;
380 default:
381 break;
382 }
383
384 return 0;
385}
386
387/*
388 * Wrapper routine to for handling exceptions.
389 */
390int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
391 unsigned long val, void *data)
392{
393 struct die_args *args = (struct die_args *)data;
394 int ret = NOTIFY_DONE;
395
396 if (args->regs && user_mode(args->regs))
397 return ret;
398
399 switch (val) {
400 case DIE_DEBUG:
401 if (kprobe_handler(args->regs))
402 ret = NOTIFY_STOP;
403 break;
404 case DIE_DEBUG_2:
405 if (post_kprobe_handler(args->regs))
406 ret = NOTIFY_STOP;
407 break;
408 default:
409 break;
410 }
411 return ret;
412}
413
414asmlinkage void __kprobes kprobe_trap(unsigned long trap_level,
415 struct pt_regs *regs)
416{
417 BUG_ON(trap_level != 0x170 && trap_level != 0x171);
418
419 if (user_mode(regs)) {
420 local_irq_enable();
421 bad_trap(regs, trap_level);
422 return;
423 }
424
425 /* trap_level == 0x170 --> ta 0x70
426 * trap_level == 0x171 --> ta 0x71
427 */
428 if (notify_die((trap_level == 0x170) ? DIE_DEBUG : DIE_DEBUG_2,
429 (trap_level == 0x170) ? "debug" : "debug_2",
430 regs, 0, trap_level, SIGTRAP) != NOTIFY_STOP)
431 bad_trap(regs, trap_level);
432}
433
434/* Jprobes support. */
435int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
436{
437 struct jprobe *jp = container_of(p, struct jprobe, kp);
438 struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
439
440 memcpy(&(kcb->jprobe_saved_regs), regs, sizeof(*regs));
441
442 regs->tpc = (unsigned long) jp->entry;
443 regs->tnpc = ((unsigned long) jp->entry) + 0x4UL;
444 regs->tstate |= TSTATE_PIL;
445
446 return 1;
447}
448
449void __kprobes jprobe_return(void)
450{
451 struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
452 register unsigned long orig_fp asm("g1");
453
454 orig_fp = kcb->jprobe_saved_regs.u_regs[UREG_FP];
455 __asm__ __volatile__("\n"
456"1: cmp %%sp, %0\n\t"
457 "blu,a,pt %%xcc, 1b\n\t"
458 " restore\n\t"
459 ".globl jprobe_return_trap_instruction\n"
460"jprobe_return_trap_instruction:\n\t"
461 "ta 0x70"
462 : /* no outputs */
463 : "r" (orig_fp));
464}
465
466extern void jprobe_return_trap_instruction(void);
467
468int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
469{
470 u32 *addr = (u32 *) regs->tpc;
471 struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
472
473 if (addr == (u32 *) jprobe_return_trap_instruction) {
474 memcpy(regs, &(kcb->jprobe_saved_regs), sizeof(*regs));
475 preempt_enable_no_resched();
476 return 1;
477 }
478 return 0;
479}
480
481/* The value stored in the return address register is actually 2
482 * instructions before where the callee will return to.
483 * Sequences usually look something like this
484 *
485 * call some_function <--- return register points here
486 * nop <--- call delay slot
487 * whatever <--- where callee returns to
488 *
489 * To keep trampoline_probe_handler logic simpler, we normalize the
490 * value kept in ri->ret_addr so we don't need to keep adjusting it
491 * back and forth.
492 */
493void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
494 struct pt_regs *regs)
495{
496 ri->ret_addr = (kprobe_opcode_t *)(regs->u_regs[UREG_RETPC] + 8);
497
498 /* Replace the return addr with trampoline addr */
499 regs->u_regs[UREG_RETPC] =
500 ((unsigned long)kretprobe_trampoline) - 8;
501}
502
503/*
504 * Called when the probe at kretprobe trampoline is hit
505 */
506int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
507{
508 struct kretprobe_instance *ri = NULL;
509 struct hlist_head *head, empty_rp;
510 struct hlist_node *node, *tmp;
511 unsigned long flags, orig_ret_address = 0;
512 unsigned long trampoline_address =(unsigned long)&kretprobe_trampoline;
513
514 INIT_HLIST_HEAD(&empty_rp);
515 kretprobe_hash_lock(current, &head, &flags);
516
517 /*
518 * It is possible to have multiple instances associated with a given
519 * task either because an multiple functions in the call path
520 * have a return probe installed on them, and/or more then one return
521 * return probe was registered for a target function.
522 *
523 * We can handle this because:
524 * - instances are always inserted at the head of the list
525 * - when multiple return probes are registered for the same
526 * function, the first instance's ret_addr will point to the
527 * real return address, and all the rest will point to
528 * kretprobe_trampoline
529 */
530 hlist_for_each_entry_safe(ri, node, tmp, head, hlist) {
531 if (ri->task != current)
532 /* another task is sharing our hash bucket */
533 continue;
534
535 if (ri->rp && ri->rp->handler)
536 ri->rp->handler(ri, regs);
537
538 orig_ret_address = (unsigned long)ri->ret_addr;
539 recycle_rp_inst(ri, &empty_rp);
540
541 if (orig_ret_address != trampoline_address)
542 /*
543 * This is the real return address. Any other
544 * instances associated with this task are for
545 * other calls deeper on the call stack
546 */
547 break;
548 }
549
550 kretprobe_assert(ri, orig_ret_address, trampoline_address);
551 regs->tpc = orig_ret_address;
552 regs->tnpc = orig_ret_address + 4;
553
554 reset_current_kprobe();
555 kretprobe_hash_unlock(current, &flags);
556 preempt_enable_no_resched();
557
558 hlist_for_each_entry_safe(ri, node, tmp, &empty_rp, hlist) {
559 hlist_del(&ri->hlist);
560 kfree(ri);
561 }
562 /*
563 * By returning a non-zero value, we are telling
564 * kprobe_handler() that we don't want the post_handler
565 * to run (and have re-enabled preemption)
566 */
567 return 1;
568}
569
570void kretprobe_trampoline_holder(void)
571{
572 asm volatile(".global kretprobe_trampoline\n"
573 "kretprobe_trampoline:\n"
574 "\tnop\n"
575 "\tnop\n");
576}
577static struct kprobe trampoline_p = {
578 .addr = (kprobe_opcode_t *) &kretprobe_trampoline,
579 .pre_handler = trampoline_probe_handler
580};
581
582int __init arch_init_kprobes(void)
583{
584 return register_kprobe(&trampoline_p);
585}
586
587int __kprobes arch_trampoline_kprobe(struct kprobe *p)
588{
589 if (p->addr == (kprobe_opcode_t *)&kretprobe_trampoline)
590 return 1;
591
592 return 0;
593}
diff --git a/arch/sparc/kernel/kstack.h b/arch/sparc/kernel/kstack.h
new file mode 100644
index 000000000000..4248d969272f
--- /dev/null
+++ b/arch/sparc/kernel/kstack.h
@@ -0,0 +1,60 @@
1#ifndef _KSTACK_H
2#define _KSTACK_H
3
4#include <linux/thread_info.h>
5#include <linux/sched.h>
6#include <asm/ptrace.h>
7#include <asm/irq.h>
8
9/* SP must be STACK_BIAS adjusted already. */
10static inline bool kstack_valid(struct thread_info *tp, unsigned long sp)
11{
12 unsigned long base = (unsigned long) tp;
13
14 if (sp >= (base + sizeof(struct thread_info)) &&
15 sp <= (base + THREAD_SIZE - sizeof(struct sparc_stackf)))
16 return true;
17
18 if (hardirq_stack[tp->cpu]) {
19 base = (unsigned long) hardirq_stack[tp->cpu];
20 if (sp >= base &&
21 sp <= (base + THREAD_SIZE - sizeof(struct sparc_stackf)))
22 return true;
23 base = (unsigned long) softirq_stack[tp->cpu];
24 if (sp >= base &&
25 sp <= (base + THREAD_SIZE - sizeof(struct sparc_stackf)))
26 return true;
27 }
28 return false;
29}
30
31/* Does "regs" point to a valid pt_regs trap frame? */
32static inline bool kstack_is_trap_frame(struct thread_info *tp, struct pt_regs *regs)
33{
34 unsigned long base = (unsigned long) tp;
35 unsigned long addr = (unsigned long) regs;
36
37 if (addr >= base &&
38 addr <= (base + THREAD_SIZE - sizeof(*regs)))
39 goto check_magic;
40
41 if (hardirq_stack[tp->cpu]) {
42 base = (unsigned long) hardirq_stack[tp->cpu];
43 if (addr >= base &&
44 addr <= (base + THREAD_SIZE - sizeof(*regs)))
45 goto check_magic;
46 base = (unsigned long) softirq_stack[tp->cpu];
47 if (addr >= base &&
48 addr <= (base + THREAD_SIZE - sizeof(*regs)))
49 goto check_magic;
50 }
51 return false;
52
53check_magic:
54 if ((regs->magic & ~0x1ff) == PT_REGS_MAGIC)
55 return true;
56 return false;
57
58}
59
60#endif /* _KSTACK_H */
diff --git a/arch/sparc/kernel/ktlb.S b/arch/sparc/kernel/ktlb.S
new file mode 100644
index 000000000000..cef8defcd7a9
--- /dev/null
+++ b/arch/sparc/kernel/ktlb.S
@@ -0,0 +1,304 @@
1/* arch/sparc64/kernel/ktlb.S: Kernel mapping TLB miss handling.
2 *
3 * Copyright (C) 1995, 1997, 2005, 2008 David S. Miller <davem@davemloft.net>
4 * Copyright (C) 1996 Eddie C. Dost (ecd@brainaid.de)
5 * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
6 * Copyright (C) 1996,98,99 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
7 */
8
9#include <asm/head.h>
10#include <asm/asi.h>
11#include <asm/page.h>
12#include <asm/pgtable.h>
13#include <asm/tsb.h>
14
15 .text
16 .align 32
17
18kvmap_itlb:
19 /* g6: TAG TARGET */
20 mov TLB_TAG_ACCESS, %g4
21 ldxa [%g4] ASI_IMMU, %g4
22
23 /* sun4v_itlb_miss branches here with the missing virtual
24 * address already loaded into %g4
25 */
26kvmap_itlb_4v:
27
28kvmap_itlb_nonlinear:
29 /* Catch kernel NULL pointer calls. */
30 sethi %hi(PAGE_SIZE), %g5
31 cmp %g4, %g5
32 bleu,pn %xcc, kvmap_dtlb_longpath
33 nop
34
35 KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_itlb_load)
36
37kvmap_itlb_tsb_miss:
38 sethi %hi(LOW_OBP_ADDRESS), %g5
39 cmp %g4, %g5
40 blu,pn %xcc, kvmap_itlb_vmalloc_addr
41 mov 0x1, %g5
42 sllx %g5, 32, %g5
43 cmp %g4, %g5
44 blu,pn %xcc, kvmap_itlb_obp
45 nop
46
47kvmap_itlb_vmalloc_addr:
48 KERN_PGTABLE_WALK(%g4, %g5, %g2, kvmap_itlb_longpath)
49
50 KTSB_LOCK_TAG(%g1, %g2, %g7)
51
52 /* Load and check PTE. */
53 ldxa [%g5] ASI_PHYS_USE_EC, %g5
54 mov 1, %g7
55 sllx %g7, TSB_TAG_INVALID_BIT, %g7
56 brgez,a,pn %g5, kvmap_itlb_longpath
57 KTSB_STORE(%g1, %g7)
58
59 KTSB_WRITE(%g1, %g5, %g6)
60
61 /* fallthrough to TLB load */
62
63kvmap_itlb_load:
64
65661: stxa %g5, [%g0] ASI_ITLB_DATA_IN
66 retry
67 .section .sun4v_2insn_patch, "ax"
68 .word 661b
69 nop
70 nop
71 .previous
72
73 /* For sun4v the ASI_ITLB_DATA_IN store and the retry
74 * instruction get nop'd out and we get here to branch
75 * to the sun4v tlb load code. The registers are setup
76 * as follows:
77 *
78 * %g4: vaddr
79 * %g5: PTE
80 * %g6: TAG
81 *
82 * The sun4v TLB load wants the PTE in %g3 so we fix that
83 * up here.
84 */
85 ba,pt %xcc, sun4v_itlb_load
86 mov %g5, %g3
87
88kvmap_itlb_longpath:
89
90661: rdpr %pstate, %g5
91 wrpr %g5, PSTATE_AG | PSTATE_MG, %pstate
92 .section .sun4v_2insn_patch, "ax"
93 .word 661b
94 SET_GL(1)
95 nop
96 .previous
97
98 rdpr %tpc, %g5
99 ba,pt %xcc, sparc64_realfault_common
100 mov FAULT_CODE_ITLB, %g4
101
102kvmap_itlb_obp:
103 OBP_TRANS_LOOKUP(%g4, %g5, %g2, %g3, kvmap_itlb_longpath)
104
105 KTSB_LOCK_TAG(%g1, %g2, %g7)
106
107 KTSB_WRITE(%g1, %g5, %g6)
108
109 ba,pt %xcc, kvmap_itlb_load
110 nop
111
112kvmap_dtlb_obp:
113 OBP_TRANS_LOOKUP(%g4, %g5, %g2, %g3, kvmap_dtlb_longpath)
114
115 KTSB_LOCK_TAG(%g1, %g2, %g7)
116
117 KTSB_WRITE(%g1, %g5, %g6)
118
119 ba,pt %xcc, kvmap_dtlb_load
120 nop
121
122 .align 32
123kvmap_dtlb_tsb4m_load:
124 KTSB_LOCK_TAG(%g1, %g2, %g7)
125 KTSB_WRITE(%g1, %g5, %g6)
126 ba,pt %xcc, kvmap_dtlb_load
127 nop
128
129kvmap_dtlb:
130 /* %g6: TAG TARGET */
131 mov TLB_TAG_ACCESS, %g4
132 ldxa [%g4] ASI_DMMU, %g4
133
134 /* sun4v_dtlb_miss branches here with the missing virtual
135 * address already loaded into %g4
136 */
137kvmap_dtlb_4v:
138 brgez,pn %g4, kvmap_dtlb_nonlinear
139 nop
140
141#ifdef CONFIG_DEBUG_PAGEALLOC
142 /* Index through the base page size TSB even for linear
143 * mappings when using page allocation debugging.
144 */
145 KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load)
146#else
147 /* Correct TAG_TARGET is already in %g6, check 4mb TSB. */
148 KERN_TSB4M_LOOKUP_TL1(%g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load)
149#endif
150 /* TSB entry address left in %g1, lookup linear PTE.
151 * Must preserve %g1 and %g6 (TAG).
152 */
153kvmap_dtlb_tsb4m_miss:
154 sethi %hi(kpte_linear_bitmap), %g2
155 or %g2, %lo(kpte_linear_bitmap), %g2
156
157 /* Clear the PAGE_OFFSET top virtual bits, then shift
158 * down to get a 256MB physical address index.
159 */
160 sllx %g4, 21, %g5
161 mov 1, %g7
162 srlx %g5, 21 + 28, %g5
163
164 /* Don't try this at home kids... this depends upon srlx
165 * only taking the low 6 bits of the shift count in %g5.
166 */
167 sllx %g7, %g5, %g7
168
169 /* Divide by 64 to get the offset into the bitmask. */
170 srlx %g5, 6, %g5
171 sllx %g5, 3, %g5
172
173 /* kern_linear_pte_xor[((mask & bit) ? 1 : 0)] */
174 ldx [%g2 + %g5], %g2
175 andcc %g2, %g7, %g0
176 sethi %hi(kern_linear_pte_xor), %g5
177 or %g5, %lo(kern_linear_pte_xor), %g5
178 bne,a,pt %xcc, 1f
179 add %g5, 8, %g5
180
1811: ldx [%g5], %g2
182
183 .globl kvmap_linear_patch
184kvmap_linear_patch:
185 ba,pt %xcc, kvmap_dtlb_tsb4m_load
186 xor %g2, %g4, %g5
187
188kvmap_dtlb_vmalloc_addr:
189 KERN_PGTABLE_WALK(%g4, %g5, %g2, kvmap_dtlb_longpath)
190
191 KTSB_LOCK_TAG(%g1, %g2, %g7)
192
193 /* Load and check PTE. */
194 ldxa [%g5] ASI_PHYS_USE_EC, %g5
195 mov 1, %g7
196 sllx %g7, TSB_TAG_INVALID_BIT, %g7
197 brgez,a,pn %g5, kvmap_dtlb_longpath
198 KTSB_STORE(%g1, %g7)
199
200 KTSB_WRITE(%g1, %g5, %g6)
201
202 /* fallthrough to TLB load */
203
204kvmap_dtlb_load:
205
206661: stxa %g5, [%g0] ASI_DTLB_DATA_IN ! Reload TLB
207 retry
208 .section .sun4v_2insn_patch, "ax"
209 .word 661b
210 nop
211 nop
212 .previous
213
214 /* For sun4v the ASI_DTLB_DATA_IN store and the retry
215 * instruction get nop'd out and we get here to branch
216 * to the sun4v tlb load code. The registers are setup
217 * as follows:
218 *
219 * %g4: vaddr
220 * %g5: PTE
221 * %g6: TAG
222 *
223 * The sun4v TLB load wants the PTE in %g3 so we fix that
224 * up here.
225 */
226 ba,pt %xcc, sun4v_dtlb_load
227 mov %g5, %g3
228
229#ifdef CONFIG_SPARSEMEM_VMEMMAP
230kvmap_vmemmap:
231 sub %g4, %g5, %g5
232 srlx %g5, 22, %g5
233 sethi %hi(vmemmap_table), %g1
234 sllx %g5, 3, %g5
235 or %g1, %lo(vmemmap_table), %g1
236 ba,pt %xcc, kvmap_dtlb_load
237 ldx [%g1 + %g5], %g5
238#endif
239
240kvmap_dtlb_nonlinear:
241 /* Catch kernel NULL pointer derefs. */
242 sethi %hi(PAGE_SIZE), %g5
243 cmp %g4, %g5
244 bleu,pn %xcc, kvmap_dtlb_longpath
245 nop
246
247#ifdef CONFIG_SPARSEMEM_VMEMMAP
248 /* Do not use the TSB for vmemmap. */
249 mov (VMEMMAP_BASE >> 24), %g5
250 sllx %g5, 24, %g5
251 cmp %g4,%g5
252 bgeu,pn %xcc, kvmap_vmemmap
253 nop
254#endif
255
256 KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load)
257
258kvmap_dtlb_tsbmiss:
259 sethi %hi(MODULES_VADDR), %g5
260 cmp %g4, %g5
261 blu,pn %xcc, kvmap_dtlb_longpath
262 mov (VMALLOC_END >> 24), %g5
263 sllx %g5, 24, %g5
264 cmp %g4, %g5
265 bgeu,pn %xcc, kvmap_dtlb_longpath
266 nop
267
268kvmap_check_obp:
269 sethi %hi(LOW_OBP_ADDRESS), %g5
270 cmp %g4, %g5
271 blu,pn %xcc, kvmap_dtlb_vmalloc_addr
272 mov 0x1, %g5
273 sllx %g5, 32, %g5
274 cmp %g4, %g5
275 blu,pn %xcc, kvmap_dtlb_obp
276 nop
277 ba,pt %xcc, kvmap_dtlb_vmalloc_addr
278 nop
279
280kvmap_dtlb_longpath:
281
282661: rdpr %pstate, %g5
283 wrpr %g5, PSTATE_AG | PSTATE_MG, %pstate
284 .section .sun4v_2insn_patch, "ax"
285 .word 661b
286 SET_GL(1)
287 ldxa [%g0] ASI_SCRATCHPAD, %g5
288 .previous
289
290 rdpr %tl, %g3
291 cmp %g3, 1
292
293661: mov TLB_TAG_ACCESS, %g4
294 ldxa [%g4] ASI_DMMU, %g5
295 .section .sun4v_2insn_patch, "ax"
296 .word 661b
297 ldx [%g5 + HV_FAULT_D_ADDR_OFFSET], %g5
298 nop
299 .previous
300
301 be,pt %xcc, sparc64_realfault_common
302 mov FAULT_CODE_DTLB, %g4
303 ba,pt %xcc, winfix_trampoline
304 nop
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
new file mode 100644
index 000000000000..d68982330f66
--- /dev/null
+++ b/arch/sparc/kernel/ldc.c
@@ -0,0 +1,2378 @@
1/* ldc.c: Logical Domain Channel link-layer protocol driver.
2 *
3 * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
4 */
5
6#include <linux/kernel.h>
7#include <linux/module.h>
8#include <linux/slab.h>
9#include <linux/spinlock.h>
10#include <linux/delay.h>
11#include <linux/errno.h>
12#include <linux/string.h>
13#include <linux/scatterlist.h>
14#include <linux/interrupt.h>
15#include <linux/list.h>
16#include <linux/init.h>
17
18#include <asm/hypervisor.h>
19#include <asm/iommu.h>
20#include <asm/page.h>
21#include <asm/ldc.h>
22#include <asm/mdesc.h>
23
24#define DRV_MODULE_NAME "ldc"
25#define PFX DRV_MODULE_NAME ": "
26#define DRV_MODULE_VERSION "1.1"
27#define DRV_MODULE_RELDATE "July 22, 2008"
28
29static char version[] __devinitdata =
30 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
31#define LDC_PACKET_SIZE 64
32
33/* Packet header layout for unreliable and reliable mode frames.
34 * When in RAW mode, packets are simply straight 64-byte payloads
35 * with no headers.
36 */
37struct ldc_packet {
38 u8 type;
39#define LDC_CTRL 0x01
40#define LDC_DATA 0x02
41#define LDC_ERR 0x10
42
43 u8 stype;
44#define LDC_INFO 0x01
45#define LDC_ACK 0x02
46#define LDC_NACK 0x04
47
48 u8 ctrl;
49#define LDC_VERS 0x01 /* Link Version */
50#define LDC_RTS 0x02 /* Request To Send */
51#define LDC_RTR 0x03 /* Ready To Receive */
52#define LDC_RDX 0x04 /* Ready for Data eXchange */
53#define LDC_CTRL_MSK 0x0f
54
55 u8 env;
56#define LDC_LEN 0x3f
57#define LDC_FRAG_MASK 0xc0
58#define LDC_START 0x40
59#define LDC_STOP 0x80
60
61 u32 seqid;
62
63 union {
64 u8 u_data[LDC_PACKET_SIZE - 8];
65 struct {
66 u32 pad;
67 u32 ackid;
68 u8 r_data[LDC_PACKET_SIZE - 8 - 8];
69 } r;
70 } u;
71};
72
73struct ldc_version {
74 u16 major;
75 u16 minor;
76};
77
78/* Ordered from largest major to lowest. */
79static struct ldc_version ver_arr[] = {
80 { .major = 1, .minor = 0 },
81};
82
83#define LDC_DEFAULT_MTU (4 * LDC_PACKET_SIZE)
84#define LDC_DEFAULT_NUM_ENTRIES (PAGE_SIZE / LDC_PACKET_SIZE)
85
86struct ldc_channel;
87
88struct ldc_mode_ops {
89 int (*write)(struct ldc_channel *, const void *, unsigned int);
90 int (*read)(struct ldc_channel *, void *, unsigned int);
91};
92
93static const struct ldc_mode_ops raw_ops;
94static const struct ldc_mode_ops nonraw_ops;
95static const struct ldc_mode_ops stream_ops;
96
97int ldom_domaining_enabled;
98
99struct ldc_iommu {
100 /* Protects arena alloc/free. */
101 spinlock_t lock;
102 struct iommu_arena arena;
103 struct ldc_mtable_entry *page_table;
104};
105
106struct ldc_channel {
107 /* Protects all operations that depend upon channel state. */
108 spinlock_t lock;
109
110 unsigned long id;
111
112 u8 *mssbuf;
113 u32 mssbuf_len;
114 u32 mssbuf_off;
115
116 struct ldc_packet *tx_base;
117 unsigned long tx_head;
118 unsigned long tx_tail;
119 unsigned long tx_num_entries;
120 unsigned long tx_ra;
121
122 unsigned long tx_acked;
123
124 struct ldc_packet *rx_base;
125 unsigned long rx_head;
126 unsigned long rx_tail;
127 unsigned long rx_num_entries;
128 unsigned long rx_ra;
129
130 u32 rcv_nxt;
131 u32 snd_nxt;
132
133 unsigned long chan_state;
134
135 struct ldc_channel_config cfg;
136 void *event_arg;
137
138 const struct ldc_mode_ops *mops;
139
140 struct ldc_iommu iommu;
141
142 struct ldc_version ver;
143
144 u8 hs_state;
145#define LDC_HS_CLOSED 0x00
146#define LDC_HS_OPEN 0x01
147#define LDC_HS_GOTVERS 0x02
148#define LDC_HS_SENTRTR 0x03
149#define LDC_HS_GOTRTR 0x04
150#define LDC_HS_COMPLETE 0x10
151
152 u8 flags;
153#define LDC_FLAG_ALLOCED_QUEUES 0x01
154#define LDC_FLAG_REGISTERED_QUEUES 0x02
155#define LDC_FLAG_REGISTERED_IRQS 0x04
156#define LDC_FLAG_RESET 0x10
157
158 u8 mss;
159 u8 state;
160
161#define LDC_IRQ_NAME_MAX 32
162 char rx_irq_name[LDC_IRQ_NAME_MAX];
163 char tx_irq_name[LDC_IRQ_NAME_MAX];
164
165 struct hlist_head mh_list;
166
167 struct hlist_node list;
168};
169
170#define ldcdbg(TYPE, f, a...) \
171do { if (lp->cfg.debug & LDC_DEBUG_##TYPE) \
172 printk(KERN_INFO PFX "ID[%lu] " f, lp->id, ## a); \
173} while (0)
174
175static const char *state_to_str(u8 state)
176{
177 switch (state) {
178 case LDC_STATE_INVALID:
179 return "INVALID";
180 case LDC_STATE_INIT:
181 return "INIT";
182 case LDC_STATE_BOUND:
183 return "BOUND";
184 case LDC_STATE_READY:
185 return "READY";
186 case LDC_STATE_CONNECTED:
187 return "CONNECTED";
188 default:
189 return "<UNKNOWN>";
190 }
191}
192
193static void ldc_set_state(struct ldc_channel *lp, u8 state)
194{
195 ldcdbg(STATE, "STATE (%s) --> (%s)\n",
196 state_to_str(lp->state),
197 state_to_str(state));
198
199 lp->state = state;
200}
201
202static unsigned long __advance(unsigned long off, unsigned long num_entries)
203{
204 off += LDC_PACKET_SIZE;
205 if (off == (num_entries * LDC_PACKET_SIZE))
206 off = 0;
207
208 return off;
209}
210
211static unsigned long rx_advance(struct ldc_channel *lp, unsigned long off)
212{
213 return __advance(off, lp->rx_num_entries);
214}
215
216static unsigned long tx_advance(struct ldc_channel *lp, unsigned long off)
217{
218 return __advance(off, lp->tx_num_entries);
219}
220
221static struct ldc_packet *handshake_get_tx_packet(struct ldc_channel *lp,
222 unsigned long *new_tail)
223{
224 struct ldc_packet *p;
225 unsigned long t;
226
227 t = tx_advance(lp, lp->tx_tail);
228 if (t == lp->tx_head)
229 return NULL;
230
231 *new_tail = t;
232
233 p = lp->tx_base;
234 return p + (lp->tx_tail / LDC_PACKET_SIZE);
235}
236
237/* When we are in reliable or stream mode, have to track the next packet
238 * we haven't gotten an ACK for in the TX queue using tx_acked. We have
239 * to be careful not to stomp over the queue past that point. During
240 * the handshake, we don't have TX data packets pending in the queue
241 * and that's why handshake_get_tx_packet() need not be mindful of
242 * lp->tx_acked.
243 */
244static unsigned long head_for_data(struct ldc_channel *lp)
245{
246 if (lp->cfg.mode == LDC_MODE_STREAM)
247 return lp->tx_acked;
248 return lp->tx_head;
249}
250
251static int tx_has_space_for(struct ldc_channel *lp, unsigned int size)
252{
253 unsigned long limit, tail, new_tail, diff;
254 unsigned int mss;
255
256 limit = head_for_data(lp);
257 tail = lp->tx_tail;
258 new_tail = tx_advance(lp, tail);
259 if (new_tail == limit)
260 return 0;
261
262 if (limit > new_tail)
263 diff = limit - new_tail;
264 else
265 diff = (limit +
266 ((lp->tx_num_entries * LDC_PACKET_SIZE) - new_tail));
267 diff /= LDC_PACKET_SIZE;
268 mss = lp->mss;
269
270 if (diff * mss < size)
271 return 0;
272
273 return 1;
274}
275
276static struct ldc_packet *data_get_tx_packet(struct ldc_channel *lp,
277 unsigned long *new_tail)
278{
279 struct ldc_packet *p;
280 unsigned long h, t;
281
282 h = head_for_data(lp);
283 t = tx_advance(lp, lp->tx_tail);
284 if (t == h)
285 return NULL;
286
287 *new_tail = t;
288
289 p = lp->tx_base;
290 return p + (lp->tx_tail / LDC_PACKET_SIZE);
291}
292
293static int set_tx_tail(struct ldc_channel *lp, unsigned long tail)
294{
295 unsigned long orig_tail = lp->tx_tail;
296 int limit = 1000;
297
298 lp->tx_tail = tail;
299 while (limit-- > 0) {
300 unsigned long err;
301
302 err = sun4v_ldc_tx_set_qtail(lp->id, tail);
303 if (!err)
304 return 0;
305
306 if (err != HV_EWOULDBLOCK) {
307 lp->tx_tail = orig_tail;
308 return -EINVAL;
309 }
310 udelay(1);
311 }
312
313 lp->tx_tail = orig_tail;
314 return -EBUSY;
315}
316
317/* This just updates the head value in the hypervisor using
318 * a polling loop with a timeout. The caller takes care of
319 * upating software state representing the head change, if any.
320 */
321static int __set_rx_head(struct ldc_channel *lp, unsigned long head)
322{
323 int limit = 1000;
324
325 while (limit-- > 0) {
326 unsigned long err;
327
328 err = sun4v_ldc_rx_set_qhead(lp->id, head);
329 if (!err)
330 return 0;
331
332 if (err != HV_EWOULDBLOCK)
333 return -EINVAL;
334
335 udelay(1);
336 }
337
338 return -EBUSY;
339}
340
341static int send_tx_packet(struct ldc_channel *lp,
342 struct ldc_packet *p,
343 unsigned long new_tail)
344{
345 BUG_ON(p != (lp->tx_base + (lp->tx_tail / LDC_PACKET_SIZE)));
346
347 return set_tx_tail(lp, new_tail);
348}
349
350static struct ldc_packet *handshake_compose_ctrl(struct ldc_channel *lp,
351 u8 stype, u8 ctrl,
352 void *data, int dlen,
353 unsigned long *new_tail)
354{
355 struct ldc_packet *p = handshake_get_tx_packet(lp, new_tail);
356
357 if (p) {
358 memset(p, 0, sizeof(*p));
359 p->type = LDC_CTRL;
360 p->stype = stype;
361 p->ctrl = ctrl;
362 if (data)
363 memcpy(p->u.u_data, data, dlen);
364 }
365 return p;
366}
367
368static int start_handshake(struct ldc_channel *lp)
369{
370 struct ldc_packet *p;
371 struct ldc_version *ver;
372 unsigned long new_tail;
373
374 ver = &ver_arr[0];
375
376 ldcdbg(HS, "SEND VER INFO maj[%u] min[%u]\n",
377 ver->major, ver->minor);
378
379 p = handshake_compose_ctrl(lp, LDC_INFO, LDC_VERS,
380 ver, sizeof(*ver), &new_tail);
381 if (p) {
382 int err = send_tx_packet(lp, p, new_tail);
383 if (!err)
384 lp->flags &= ~LDC_FLAG_RESET;
385 return err;
386 }
387 return -EBUSY;
388}
389
390static int send_version_nack(struct ldc_channel *lp,
391 u16 major, u16 minor)
392{
393 struct ldc_packet *p;
394 struct ldc_version ver;
395 unsigned long new_tail;
396
397 ver.major = major;
398 ver.minor = minor;
399
400 p = handshake_compose_ctrl(lp, LDC_NACK, LDC_VERS,
401 &ver, sizeof(ver), &new_tail);
402 if (p) {
403 ldcdbg(HS, "SEND VER NACK maj[%u] min[%u]\n",
404 ver.major, ver.minor);
405
406 return send_tx_packet(lp, p, new_tail);
407 }
408 return -EBUSY;
409}
410
411static int send_version_ack(struct ldc_channel *lp,
412 struct ldc_version *vp)
413{
414 struct ldc_packet *p;
415 unsigned long new_tail;
416
417 p = handshake_compose_ctrl(lp, LDC_ACK, LDC_VERS,
418 vp, sizeof(*vp), &new_tail);
419 if (p) {
420 ldcdbg(HS, "SEND VER ACK maj[%u] min[%u]\n",
421 vp->major, vp->minor);
422
423 return send_tx_packet(lp, p, new_tail);
424 }
425 return -EBUSY;
426}
427
428static int send_rts(struct ldc_channel *lp)
429{
430 struct ldc_packet *p;
431 unsigned long new_tail;
432
433 p = handshake_compose_ctrl(lp, LDC_INFO, LDC_RTS, NULL, 0,
434 &new_tail);
435 if (p) {
436 p->env = lp->cfg.mode;
437 p->seqid = 0;
438 lp->rcv_nxt = 0;
439
440 ldcdbg(HS, "SEND RTS env[0x%x] seqid[0x%x]\n",
441 p->env, p->seqid);
442
443 return send_tx_packet(lp, p, new_tail);
444 }
445 return -EBUSY;
446}
447
448static int send_rtr(struct ldc_channel *lp)
449{
450 struct ldc_packet *p;
451 unsigned long new_tail;
452
453 p = handshake_compose_ctrl(lp, LDC_INFO, LDC_RTR, NULL, 0,
454 &new_tail);
455 if (p) {
456 p->env = lp->cfg.mode;
457 p->seqid = 0;
458
459 ldcdbg(HS, "SEND RTR env[0x%x] seqid[0x%x]\n",
460 p->env, p->seqid);
461
462 return send_tx_packet(lp, p, new_tail);
463 }
464 return -EBUSY;
465}
466
467static int send_rdx(struct ldc_channel *lp)
468{
469 struct ldc_packet *p;
470 unsigned long new_tail;
471
472 p = handshake_compose_ctrl(lp, LDC_INFO, LDC_RDX, NULL, 0,
473 &new_tail);
474 if (p) {
475 p->env = 0;
476 p->seqid = ++lp->snd_nxt;
477 p->u.r.ackid = lp->rcv_nxt;
478
479 ldcdbg(HS, "SEND RDX env[0x%x] seqid[0x%x] ackid[0x%x]\n",
480 p->env, p->seqid, p->u.r.ackid);
481
482 return send_tx_packet(lp, p, new_tail);
483 }
484 return -EBUSY;
485}
486
487static int send_data_nack(struct ldc_channel *lp, struct ldc_packet *data_pkt)
488{
489 struct ldc_packet *p;
490 unsigned long new_tail;
491 int err;
492
493 p = data_get_tx_packet(lp, &new_tail);
494 if (!p)
495 return -EBUSY;
496 memset(p, 0, sizeof(*p));
497 p->type = data_pkt->type;
498 p->stype = LDC_NACK;
499 p->ctrl = data_pkt->ctrl & LDC_CTRL_MSK;
500 p->seqid = lp->snd_nxt + 1;
501 p->u.r.ackid = lp->rcv_nxt;
502
503 ldcdbg(HS, "SEND DATA NACK type[0x%x] ctl[0x%x] seq[0x%x] ack[0x%x]\n",
504 p->type, p->ctrl, p->seqid, p->u.r.ackid);
505
506 err = send_tx_packet(lp, p, new_tail);
507 if (!err)
508 lp->snd_nxt++;
509
510 return err;
511}
512
513static int ldc_abort(struct ldc_channel *lp)
514{
515 unsigned long hv_err;
516
517 ldcdbg(STATE, "ABORT\n");
518
519 /* We report but do not act upon the hypervisor errors because
520 * there really isn't much we can do if they fail at this point.
521 */
522 hv_err = sun4v_ldc_tx_qconf(lp->id, lp->tx_ra, lp->tx_num_entries);
523 if (hv_err)
524 printk(KERN_ERR PFX "ldc_abort: "
525 "sun4v_ldc_tx_qconf(%lx,%lx,%lx) failed, err=%lu\n",
526 lp->id, lp->tx_ra, lp->tx_num_entries, hv_err);
527
528 hv_err = sun4v_ldc_tx_get_state(lp->id,
529 &lp->tx_head,
530 &lp->tx_tail,
531 &lp->chan_state);
532 if (hv_err)
533 printk(KERN_ERR PFX "ldc_abort: "
534 "sun4v_ldc_tx_get_state(%lx,...) failed, err=%lu\n",
535 lp->id, hv_err);
536
537 hv_err = sun4v_ldc_rx_qconf(lp->id, lp->rx_ra, lp->rx_num_entries);
538 if (hv_err)
539 printk(KERN_ERR PFX "ldc_abort: "
540 "sun4v_ldc_rx_qconf(%lx,%lx,%lx) failed, err=%lu\n",
541 lp->id, lp->rx_ra, lp->rx_num_entries, hv_err);
542
543 /* Refetch the RX queue state as well, because we could be invoked
544 * here in the queue processing context.
545 */
546 hv_err = sun4v_ldc_rx_get_state(lp->id,
547 &lp->rx_head,
548 &lp->rx_tail,
549 &lp->chan_state);
550 if (hv_err)
551 printk(KERN_ERR PFX "ldc_abort: "
552 "sun4v_ldc_rx_get_state(%lx,...) failed, err=%lu\n",
553 lp->id, hv_err);
554
555 return -ECONNRESET;
556}
557
558static struct ldc_version *find_by_major(u16 major)
559{
560 struct ldc_version *ret = NULL;
561 int i;
562
563 for (i = 0; i < ARRAY_SIZE(ver_arr); i++) {
564 struct ldc_version *v = &ver_arr[i];
565 if (v->major <= major) {
566 ret = v;
567 break;
568 }
569 }
570 return ret;
571}
572
573static int process_ver_info(struct ldc_channel *lp, struct ldc_version *vp)
574{
575 struct ldc_version *vap;
576 int err;
577
578 ldcdbg(HS, "GOT VERSION INFO major[%x] minor[%x]\n",
579 vp->major, vp->minor);
580
581 if (lp->hs_state == LDC_HS_GOTVERS) {
582 lp->hs_state = LDC_HS_OPEN;
583 memset(&lp->ver, 0, sizeof(lp->ver));
584 }
585
586 vap = find_by_major(vp->major);
587 if (!vap) {
588 err = send_version_nack(lp, 0, 0);
589 } else if (vap->major != vp->major) {
590 err = send_version_nack(lp, vap->major, vap->minor);
591 } else {
592 struct ldc_version ver = *vp;
593 if (ver.minor > vap->minor)
594 ver.minor = vap->minor;
595 err = send_version_ack(lp, &ver);
596 if (!err) {
597 lp->ver = ver;
598 lp->hs_state = LDC_HS_GOTVERS;
599 }
600 }
601 if (err)
602 return ldc_abort(lp);
603
604 return 0;
605}
606
607static int process_ver_ack(struct ldc_channel *lp, struct ldc_version *vp)
608{
609 ldcdbg(HS, "GOT VERSION ACK major[%x] minor[%x]\n",
610 vp->major, vp->minor);
611
612 if (lp->hs_state == LDC_HS_GOTVERS) {
613 if (lp->ver.major != vp->major ||
614 lp->ver.minor != vp->minor)
615 return ldc_abort(lp);
616 } else {
617 lp->ver = *vp;
618 lp->hs_state = LDC_HS_GOTVERS;
619 }
620 if (send_rts(lp))
621 return ldc_abort(lp);
622 return 0;
623}
624
625static int process_ver_nack(struct ldc_channel *lp, struct ldc_version *vp)
626{
627 struct ldc_version *vap;
628
629 if ((vp->major == 0 && vp->minor == 0) ||
630 !(vap = find_by_major(vp->major))) {
631 return ldc_abort(lp);
632 } else {
633 struct ldc_packet *p;
634 unsigned long new_tail;
635
636 p = handshake_compose_ctrl(lp, LDC_INFO, LDC_VERS,
637 vap, sizeof(*vap),
638 &new_tail);
639 if (p)
640 return send_tx_packet(lp, p, new_tail);
641 else
642 return ldc_abort(lp);
643 }
644}
645
646static int process_version(struct ldc_channel *lp,
647 struct ldc_packet *p)
648{
649 struct ldc_version *vp;
650
651 vp = (struct ldc_version *) p->u.u_data;
652
653 switch (p->stype) {
654 case LDC_INFO:
655 return process_ver_info(lp, vp);
656
657 case LDC_ACK:
658 return process_ver_ack(lp, vp);
659
660 case LDC_NACK:
661 return process_ver_nack(lp, vp);
662
663 default:
664 return ldc_abort(lp);
665 }
666}
667
668static int process_rts(struct ldc_channel *lp,
669 struct ldc_packet *p)
670{
671 ldcdbg(HS, "GOT RTS stype[%x] seqid[%x] env[%x]\n",
672 p->stype, p->seqid, p->env);
673
674 if (p->stype != LDC_INFO ||
675 lp->hs_state != LDC_HS_GOTVERS ||
676 p->env != lp->cfg.mode)
677 return ldc_abort(lp);
678
679 lp->snd_nxt = p->seqid;
680 lp->rcv_nxt = p->seqid;
681 lp->hs_state = LDC_HS_SENTRTR;
682 if (send_rtr(lp))
683 return ldc_abort(lp);
684
685 return 0;
686}
687
688static int process_rtr(struct ldc_channel *lp,
689 struct ldc_packet *p)
690{
691 ldcdbg(HS, "GOT RTR stype[%x] seqid[%x] env[%x]\n",
692 p->stype, p->seqid, p->env);
693
694 if (p->stype != LDC_INFO ||
695 p->env != lp->cfg.mode)
696 return ldc_abort(lp);
697
698 lp->snd_nxt = p->seqid;
699 lp->hs_state = LDC_HS_COMPLETE;
700 ldc_set_state(lp, LDC_STATE_CONNECTED);
701 send_rdx(lp);
702
703 return LDC_EVENT_UP;
704}
705
706static int rx_seq_ok(struct ldc_channel *lp, u32 seqid)
707{
708 return lp->rcv_nxt + 1 == seqid;
709}
710
711static int process_rdx(struct ldc_channel *lp,
712 struct ldc_packet *p)
713{
714 ldcdbg(HS, "GOT RDX stype[%x] seqid[%x] env[%x] ackid[%x]\n",
715 p->stype, p->seqid, p->env, p->u.r.ackid);
716
717 if (p->stype != LDC_INFO ||
718 !(rx_seq_ok(lp, p->seqid)))
719 return ldc_abort(lp);
720
721 lp->rcv_nxt = p->seqid;
722
723 lp->hs_state = LDC_HS_COMPLETE;
724 ldc_set_state(lp, LDC_STATE_CONNECTED);
725
726 return LDC_EVENT_UP;
727}
728
729static int process_control_frame(struct ldc_channel *lp,
730 struct ldc_packet *p)
731{
732 switch (p->ctrl) {
733 case LDC_VERS:
734 return process_version(lp, p);
735
736 case LDC_RTS:
737 return process_rts(lp, p);
738
739 case LDC_RTR:
740 return process_rtr(lp, p);
741
742 case LDC_RDX:
743 return process_rdx(lp, p);
744
745 default:
746 return ldc_abort(lp);
747 }
748}
749
750static int process_error_frame(struct ldc_channel *lp,
751 struct ldc_packet *p)
752{
753 return ldc_abort(lp);
754}
755
756static int process_data_ack(struct ldc_channel *lp,
757 struct ldc_packet *ack)
758{
759 unsigned long head = lp->tx_acked;
760 u32 ackid = ack->u.r.ackid;
761
762 while (1) {
763 struct ldc_packet *p = lp->tx_base + (head / LDC_PACKET_SIZE);
764
765 head = tx_advance(lp, head);
766
767 if (p->seqid == ackid) {
768 lp->tx_acked = head;
769 return 0;
770 }
771 if (head == lp->tx_tail)
772 return ldc_abort(lp);
773 }
774
775 return 0;
776}
777
778static void send_events(struct ldc_channel *lp, unsigned int event_mask)
779{
780 if (event_mask & LDC_EVENT_RESET)
781 lp->cfg.event(lp->event_arg, LDC_EVENT_RESET);
782 if (event_mask & LDC_EVENT_UP)
783 lp->cfg.event(lp->event_arg, LDC_EVENT_UP);
784 if (event_mask & LDC_EVENT_DATA_READY)
785 lp->cfg.event(lp->event_arg, LDC_EVENT_DATA_READY);
786}
787
788static irqreturn_t ldc_rx(int irq, void *dev_id)
789{
790 struct ldc_channel *lp = dev_id;
791 unsigned long orig_state, hv_err, flags;
792 unsigned int event_mask;
793
794 spin_lock_irqsave(&lp->lock, flags);
795
796 orig_state = lp->chan_state;
797 hv_err = sun4v_ldc_rx_get_state(lp->id,
798 &lp->rx_head,
799 &lp->rx_tail,
800 &lp->chan_state);
801
802 ldcdbg(RX, "RX state[0x%02lx:0x%02lx] head[0x%04lx] tail[0x%04lx]\n",
803 orig_state, lp->chan_state, lp->rx_head, lp->rx_tail);
804
805 event_mask = 0;
806
807 if (lp->cfg.mode == LDC_MODE_RAW &&
808 lp->chan_state == LDC_CHANNEL_UP) {
809 lp->hs_state = LDC_HS_COMPLETE;
810 ldc_set_state(lp, LDC_STATE_CONNECTED);
811
812 event_mask |= LDC_EVENT_UP;
813
814 orig_state = lp->chan_state;
815 }
816
817 /* If we are in reset state, flush the RX queue and ignore
818 * everything.
819 */
820 if (lp->flags & LDC_FLAG_RESET) {
821 (void) __set_rx_head(lp, lp->rx_tail);
822 goto out;
823 }
824
825 /* Once we finish the handshake, we let the ldc_read()
826 * paths do all of the control frame and state management.
827 * Just trigger the callback.
828 */
829 if (lp->hs_state == LDC_HS_COMPLETE) {
830handshake_complete:
831 if (lp->chan_state != orig_state) {
832 unsigned int event = LDC_EVENT_RESET;
833
834 if (lp->chan_state == LDC_CHANNEL_UP)
835 event = LDC_EVENT_UP;
836
837 event_mask |= event;
838 }
839 if (lp->rx_head != lp->rx_tail)
840 event_mask |= LDC_EVENT_DATA_READY;
841
842 goto out;
843 }
844
845 if (lp->chan_state != orig_state)
846 goto out;
847
848 while (lp->rx_head != lp->rx_tail) {
849 struct ldc_packet *p;
850 unsigned long new;
851 int err;
852
853 p = lp->rx_base + (lp->rx_head / LDC_PACKET_SIZE);
854
855 switch (p->type) {
856 case LDC_CTRL:
857 err = process_control_frame(lp, p);
858 if (err > 0)
859 event_mask |= err;
860 break;
861
862 case LDC_DATA:
863 event_mask |= LDC_EVENT_DATA_READY;
864 err = 0;
865 break;
866
867 case LDC_ERR:
868 err = process_error_frame(lp, p);
869 break;
870
871 default:
872 err = ldc_abort(lp);
873 break;
874 }
875
876 if (err < 0)
877 break;
878
879 new = lp->rx_head;
880 new += LDC_PACKET_SIZE;
881 if (new == (lp->rx_num_entries * LDC_PACKET_SIZE))
882 new = 0;
883 lp->rx_head = new;
884
885 err = __set_rx_head(lp, new);
886 if (err < 0) {
887 (void) ldc_abort(lp);
888 break;
889 }
890 if (lp->hs_state == LDC_HS_COMPLETE)
891 goto handshake_complete;
892 }
893
894out:
895 spin_unlock_irqrestore(&lp->lock, flags);
896
897 send_events(lp, event_mask);
898
899 return IRQ_HANDLED;
900}
901
902static irqreturn_t ldc_tx(int irq, void *dev_id)
903{
904 struct ldc_channel *lp = dev_id;
905 unsigned long flags, hv_err, orig_state;
906 unsigned int event_mask = 0;
907
908 spin_lock_irqsave(&lp->lock, flags);
909
910 orig_state = lp->chan_state;
911 hv_err = sun4v_ldc_tx_get_state(lp->id,
912 &lp->tx_head,
913 &lp->tx_tail,
914 &lp->chan_state);
915
916 ldcdbg(TX, " TX state[0x%02lx:0x%02lx] head[0x%04lx] tail[0x%04lx]\n",
917 orig_state, lp->chan_state, lp->tx_head, lp->tx_tail);
918
919 if (lp->cfg.mode == LDC_MODE_RAW &&
920 lp->chan_state == LDC_CHANNEL_UP) {
921 lp->hs_state = LDC_HS_COMPLETE;
922 ldc_set_state(lp, LDC_STATE_CONNECTED);
923
924 event_mask |= LDC_EVENT_UP;
925 }
926
927 spin_unlock_irqrestore(&lp->lock, flags);
928
929 send_events(lp, event_mask);
930
931 return IRQ_HANDLED;
932}
933
934/* XXX ldc_alloc() and ldc_free() needs to run under a mutex so
935 * XXX that addition and removal from the ldc_channel_list has
936 * XXX atomicity, otherwise the __ldc_channel_exists() check is
937 * XXX totally pointless as another thread can slip into ldc_alloc()
938 * XXX and add a channel with the same ID. There also needs to be
939 * XXX a spinlock for ldc_channel_list.
940 */
941static HLIST_HEAD(ldc_channel_list);
942
943static int __ldc_channel_exists(unsigned long id)
944{
945 struct ldc_channel *lp;
946 struct hlist_node *n;
947
948 hlist_for_each_entry(lp, n, &ldc_channel_list, list) {
949 if (lp->id == id)
950 return 1;
951 }
952 return 0;
953}
954
955static int alloc_queue(const char *name, unsigned long num_entries,
956 struct ldc_packet **base, unsigned long *ra)
957{
958 unsigned long size, order;
959 void *q;
960
961 size = num_entries * LDC_PACKET_SIZE;
962 order = get_order(size);
963
964 q = (void *) __get_free_pages(GFP_KERNEL, order);
965 if (!q) {
966 printk(KERN_ERR PFX "Alloc of %s queue failed with "
967 "size=%lu order=%lu\n", name, size, order);
968 return -ENOMEM;
969 }
970
971 memset(q, 0, PAGE_SIZE << order);
972
973 *base = q;
974 *ra = __pa(q);
975
976 return 0;
977}
978
979static void free_queue(unsigned long num_entries, struct ldc_packet *q)
980{
981 unsigned long size, order;
982
983 if (!q)
984 return;
985
986 size = num_entries * LDC_PACKET_SIZE;
987 order = get_order(size);
988
989 free_pages((unsigned long)q, order);
990}
991
992/* XXX Make this configurable... XXX */
993#define LDC_IOTABLE_SIZE (8 * 1024)
994
995static int ldc_iommu_init(struct ldc_channel *lp)
996{
997 unsigned long sz, num_tsb_entries, tsbsize, order;
998 struct ldc_iommu *iommu = &lp->iommu;
999 struct ldc_mtable_entry *table;
1000 unsigned long hv_err;
1001 int err;
1002
1003 num_tsb_entries = LDC_IOTABLE_SIZE;
1004 tsbsize = num_tsb_entries * sizeof(struct ldc_mtable_entry);
1005
1006 spin_lock_init(&iommu->lock);
1007
1008 sz = num_tsb_entries / 8;
1009 sz = (sz + 7UL) & ~7UL;
1010 iommu->arena.map = kzalloc(sz, GFP_KERNEL);
1011 if (!iommu->arena.map) {
1012 printk(KERN_ERR PFX "Alloc of arena map failed, sz=%lu\n", sz);
1013 return -ENOMEM;
1014 }
1015
1016 iommu->arena.limit = num_tsb_entries;
1017
1018 order = get_order(tsbsize);
1019
1020 table = (struct ldc_mtable_entry *)
1021 __get_free_pages(GFP_KERNEL, order);
1022 err = -ENOMEM;
1023 if (!table) {
1024 printk(KERN_ERR PFX "Alloc of MTE table failed, "
1025 "size=%lu order=%lu\n", tsbsize, order);
1026 goto out_free_map;
1027 }
1028
1029 memset(table, 0, PAGE_SIZE << order);
1030
1031 iommu->page_table = table;
1032
1033 hv_err = sun4v_ldc_set_map_table(lp->id, __pa(table),
1034 num_tsb_entries);
1035 err = -EINVAL;
1036 if (hv_err)
1037 goto out_free_table;
1038
1039 return 0;
1040
1041out_free_table:
1042 free_pages((unsigned long) table, order);
1043 iommu->page_table = NULL;
1044
1045out_free_map:
1046 kfree(iommu->arena.map);
1047 iommu->arena.map = NULL;
1048
1049 return err;
1050}
1051
1052static void ldc_iommu_release(struct ldc_channel *lp)
1053{
1054 struct ldc_iommu *iommu = &lp->iommu;
1055 unsigned long num_tsb_entries, tsbsize, order;
1056
1057 (void) sun4v_ldc_set_map_table(lp->id, 0, 0);
1058
1059 num_tsb_entries = iommu->arena.limit;
1060 tsbsize = num_tsb_entries * sizeof(struct ldc_mtable_entry);
1061 order = get_order(tsbsize);
1062
1063 free_pages((unsigned long) iommu->page_table, order);
1064 iommu->page_table = NULL;
1065
1066 kfree(iommu->arena.map);
1067 iommu->arena.map = NULL;
1068}
1069
1070struct ldc_channel *ldc_alloc(unsigned long id,
1071 const struct ldc_channel_config *cfgp,
1072 void *event_arg)
1073{
1074 struct ldc_channel *lp;
1075 const struct ldc_mode_ops *mops;
1076 unsigned long dummy1, dummy2, hv_err;
1077 u8 mss, *mssbuf;
1078 int err;
1079
1080 err = -ENODEV;
1081 if (!ldom_domaining_enabled)
1082 goto out_err;
1083
1084 err = -EINVAL;
1085 if (!cfgp)
1086 goto out_err;
1087
1088 switch (cfgp->mode) {
1089 case LDC_MODE_RAW:
1090 mops = &raw_ops;
1091 mss = LDC_PACKET_SIZE;
1092 break;
1093
1094 case LDC_MODE_UNRELIABLE:
1095 mops = &nonraw_ops;
1096 mss = LDC_PACKET_SIZE - 8;
1097 break;
1098
1099 case LDC_MODE_STREAM:
1100 mops = &stream_ops;
1101 mss = LDC_PACKET_SIZE - 8 - 8;
1102 break;
1103
1104 default:
1105 goto out_err;
1106 }
1107
1108 if (!cfgp->event || !event_arg || !cfgp->rx_irq || !cfgp->tx_irq)
1109 goto out_err;
1110
1111 hv_err = sun4v_ldc_tx_qinfo(id, &dummy1, &dummy2);
1112 err = -ENODEV;
1113 if (hv_err == HV_ECHANNEL)
1114 goto out_err;
1115
1116 err = -EEXIST;
1117 if (__ldc_channel_exists(id))
1118 goto out_err;
1119
1120 mssbuf = NULL;
1121
1122 lp = kzalloc(sizeof(*lp), GFP_KERNEL);
1123 err = -ENOMEM;
1124 if (!lp)
1125 goto out_err;
1126
1127 spin_lock_init(&lp->lock);
1128
1129 lp->id = id;
1130
1131 err = ldc_iommu_init(lp);
1132 if (err)
1133 goto out_free_ldc;
1134
1135 lp->mops = mops;
1136 lp->mss = mss;
1137
1138 lp->cfg = *cfgp;
1139 if (!lp->cfg.mtu)
1140 lp->cfg.mtu = LDC_DEFAULT_MTU;
1141
1142 if (lp->cfg.mode == LDC_MODE_STREAM) {
1143 mssbuf = kzalloc(lp->cfg.mtu, GFP_KERNEL);
1144 if (!mssbuf) {
1145 err = -ENOMEM;
1146 goto out_free_iommu;
1147 }
1148 lp->mssbuf = mssbuf;
1149 }
1150
1151 lp->event_arg = event_arg;
1152
1153 /* XXX allow setting via ldc_channel_config to override defaults
1154 * XXX or use some formula based upon mtu
1155 */
1156 lp->tx_num_entries = LDC_DEFAULT_NUM_ENTRIES;
1157 lp->rx_num_entries = LDC_DEFAULT_NUM_ENTRIES;
1158
1159 err = alloc_queue("TX", lp->tx_num_entries,
1160 &lp->tx_base, &lp->tx_ra);
1161 if (err)
1162 goto out_free_mssbuf;
1163
1164 err = alloc_queue("RX", lp->rx_num_entries,
1165 &lp->rx_base, &lp->rx_ra);
1166 if (err)
1167 goto out_free_txq;
1168
1169 lp->flags |= LDC_FLAG_ALLOCED_QUEUES;
1170
1171 lp->hs_state = LDC_HS_CLOSED;
1172 ldc_set_state(lp, LDC_STATE_INIT);
1173
1174 INIT_HLIST_NODE(&lp->list);
1175 hlist_add_head(&lp->list, &ldc_channel_list);
1176
1177 INIT_HLIST_HEAD(&lp->mh_list);
1178
1179 return lp;
1180
1181out_free_txq:
1182 free_queue(lp->tx_num_entries, lp->tx_base);
1183
1184out_free_mssbuf:
1185 if (mssbuf)
1186 kfree(mssbuf);
1187
1188out_free_iommu:
1189 ldc_iommu_release(lp);
1190
1191out_free_ldc:
1192 kfree(lp);
1193
1194out_err:
1195 return ERR_PTR(err);
1196}
1197EXPORT_SYMBOL(ldc_alloc);
1198
1199void ldc_free(struct ldc_channel *lp)
1200{
1201 if (lp->flags & LDC_FLAG_REGISTERED_IRQS) {
1202 free_irq(lp->cfg.rx_irq, lp);
1203 free_irq(lp->cfg.tx_irq, lp);
1204 }
1205
1206 if (lp->flags & LDC_FLAG_REGISTERED_QUEUES) {
1207 sun4v_ldc_tx_qconf(lp->id, 0, 0);
1208 sun4v_ldc_rx_qconf(lp->id, 0, 0);
1209 lp->flags &= ~LDC_FLAG_REGISTERED_QUEUES;
1210 }
1211 if (lp->flags & LDC_FLAG_ALLOCED_QUEUES) {
1212 free_queue(lp->tx_num_entries, lp->tx_base);
1213 free_queue(lp->rx_num_entries, lp->rx_base);
1214 lp->flags &= ~LDC_FLAG_ALLOCED_QUEUES;
1215 }
1216
1217 hlist_del(&lp->list);
1218
1219 if (lp->mssbuf)
1220 kfree(lp->mssbuf);
1221
1222 ldc_iommu_release(lp);
1223
1224 kfree(lp);
1225}
1226EXPORT_SYMBOL(ldc_free);
1227
1228/* Bind the channel. This registers the LDC queues with
1229 * the hypervisor and puts the channel into a pseudo-listening
1230 * state. This does not initiate a handshake, ldc_connect() does
1231 * that.
1232 */
1233int ldc_bind(struct ldc_channel *lp, const char *name)
1234{
1235 unsigned long hv_err, flags;
1236 int err = -EINVAL;
1237
1238 if (!name ||
1239 (lp->state != LDC_STATE_INIT))
1240 return -EINVAL;
1241
1242 snprintf(lp->rx_irq_name, LDC_IRQ_NAME_MAX, "%s RX", name);
1243 snprintf(lp->tx_irq_name, LDC_IRQ_NAME_MAX, "%s TX", name);
1244
1245 err = request_irq(lp->cfg.rx_irq, ldc_rx,
1246 IRQF_SAMPLE_RANDOM | IRQF_SHARED,
1247 lp->rx_irq_name, lp);
1248 if (err)
1249 return err;
1250
1251 err = request_irq(lp->cfg.tx_irq, ldc_tx,
1252 IRQF_SAMPLE_RANDOM | IRQF_SHARED,
1253 lp->tx_irq_name, lp);
1254 if (err) {
1255 free_irq(lp->cfg.rx_irq, lp);
1256 return err;
1257 }
1258
1259
1260 spin_lock_irqsave(&lp->lock, flags);
1261
1262 enable_irq(lp->cfg.rx_irq);
1263 enable_irq(lp->cfg.tx_irq);
1264
1265 lp->flags |= LDC_FLAG_REGISTERED_IRQS;
1266
1267 err = -ENODEV;
1268 hv_err = sun4v_ldc_tx_qconf(lp->id, 0, 0);
1269 if (hv_err)
1270 goto out_free_irqs;
1271
1272 hv_err = sun4v_ldc_tx_qconf(lp->id, lp->tx_ra, lp->tx_num_entries);
1273 if (hv_err)
1274 goto out_free_irqs;
1275
1276 hv_err = sun4v_ldc_rx_qconf(lp->id, 0, 0);
1277 if (hv_err)
1278 goto out_unmap_tx;
1279
1280 hv_err = sun4v_ldc_rx_qconf(lp->id, lp->rx_ra, lp->rx_num_entries);
1281 if (hv_err)
1282 goto out_unmap_tx;
1283
1284 lp->flags |= LDC_FLAG_REGISTERED_QUEUES;
1285
1286 hv_err = sun4v_ldc_tx_get_state(lp->id,
1287 &lp->tx_head,
1288 &lp->tx_tail,
1289 &lp->chan_state);
1290 err = -EBUSY;
1291 if (hv_err)
1292 goto out_unmap_rx;
1293
1294 lp->tx_acked = lp->tx_head;
1295
1296 lp->hs_state = LDC_HS_OPEN;
1297 ldc_set_state(lp, LDC_STATE_BOUND);
1298
1299 spin_unlock_irqrestore(&lp->lock, flags);
1300
1301 return 0;
1302
1303out_unmap_rx:
1304 lp->flags &= ~LDC_FLAG_REGISTERED_QUEUES;
1305 sun4v_ldc_rx_qconf(lp->id, 0, 0);
1306
1307out_unmap_tx:
1308 sun4v_ldc_tx_qconf(lp->id, 0, 0);
1309
1310out_free_irqs:
1311 lp->flags &= ~LDC_FLAG_REGISTERED_IRQS;
1312 free_irq(lp->cfg.tx_irq, lp);
1313 free_irq(lp->cfg.rx_irq, lp);
1314
1315 spin_unlock_irqrestore(&lp->lock, flags);
1316
1317 return err;
1318}
1319EXPORT_SYMBOL(ldc_bind);
1320
1321int ldc_connect(struct ldc_channel *lp)
1322{
1323 unsigned long flags;
1324 int err;
1325
1326 if (lp->cfg.mode == LDC_MODE_RAW)
1327 return -EINVAL;
1328
1329 spin_lock_irqsave(&lp->lock, flags);
1330
1331 if (!(lp->flags & LDC_FLAG_ALLOCED_QUEUES) ||
1332 !(lp->flags & LDC_FLAG_REGISTERED_QUEUES) ||
1333 lp->hs_state != LDC_HS_OPEN)
1334 err = -EINVAL;
1335 else
1336 err = start_handshake(lp);
1337
1338 spin_unlock_irqrestore(&lp->lock, flags);
1339
1340 return err;
1341}
1342EXPORT_SYMBOL(ldc_connect);
1343
1344int ldc_disconnect(struct ldc_channel *lp)
1345{
1346 unsigned long hv_err, flags;
1347 int err;
1348
1349 if (lp->cfg.mode == LDC_MODE_RAW)
1350 return -EINVAL;
1351
1352 if (!(lp->flags & LDC_FLAG_ALLOCED_QUEUES) ||
1353 !(lp->flags & LDC_FLAG_REGISTERED_QUEUES))
1354 return -EINVAL;
1355
1356 spin_lock_irqsave(&lp->lock, flags);
1357
1358 err = -ENODEV;
1359 hv_err = sun4v_ldc_tx_qconf(lp->id, 0, 0);
1360 if (hv_err)
1361 goto out_err;
1362
1363 hv_err = sun4v_ldc_tx_qconf(lp->id, lp->tx_ra, lp->tx_num_entries);
1364 if (hv_err)
1365 goto out_err;
1366
1367 hv_err = sun4v_ldc_rx_qconf(lp->id, 0, 0);
1368 if (hv_err)
1369 goto out_err;
1370
1371 hv_err = sun4v_ldc_rx_qconf(lp->id, lp->rx_ra, lp->rx_num_entries);
1372 if (hv_err)
1373 goto out_err;
1374
1375 ldc_set_state(lp, LDC_STATE_BOUND);
1376 lp->hs_state = LDC_HS_OPEN;
1377 lp->flags |= LDC_FLAG_RESET;
1378
1379 spin_unlock_irqrestore(&lp->lock, flags);
1380
1381 return 0;
1382
1383out_err:
1384 sun4v_ldc_tx_qconf(lp->id, 0, 0);
1385 sun4v_ldc_rx_qconf(lp->id, 0, 0);
1386 free_irq(lp->cfg.tx_irq, lp);
1387 free_irq(lp->cfg.rx_irq, lp);
1388 lp->flags &= ~(LDC_FLAG_REGISTERED_IRQS |
1389 LDC_FLAG_REGISTERED_QUEUES);
1390 ldc_set_state(lp, LDC_STATE_INIT);
1391
1392 spin_unlock_irqrestore(&lp->lock, flags);
1393
1394 return err;
1395}
1396EXPORT_SYMBOL(ldc_disconnect);
1397
1398int ldc_state(struct ldc_channel *lp)
1399{
1400 return lp->state;
1401}
1402EXPORT_SYMBOL(ldc_state);
1403
1404static int write_raw(struct ldc_channel *lp, const void *buf, unsigned int size)
1405{
1406 struct ldc_packet *p;
1407 unsigned long new_tail;
1408 int err;
1409
1410 if (size > LDC_PACKET_SIZE)
1411 return -EMSGSIZE;
1412
1413 p = data_get_tx_packet(lp, &new_tail);
1414 if (!p)
1415 return -EAGAIN;
1416
1417 memcpy(p, buf, size);
1418
1419 err = send_tx_packet(lp, p, new_tail);
1420 if (!err)
1421 err = size;
1422
1423 return err;
1424}
1425
1426static int read_raw(struct ldc_channel *lp, void *buf, unsigned int size)
1427{
1428 struct ldc_packet *p;
1429 unsigned long hv_err, new;
1430 int err;
1431
1432 if (size < LDC_PACKET_SIZE)
1433 return -EINVAL;
1434
1435 hv_err = sun4v_ldc_rx_get_state(lp->id,
1436 &lp->rx_head,
1437 &lp->rx_tail,
1438 &lp->chan_state);
1439 if (hv_err)
1440 return ldc_abort(lp);
1441
1442 if (lp->chan_state == LDC_CHANNEL_DOWN ||
1443 lp->chan_state == LDC_CHANNEL_RESETTING)
1444 return -ECONNRESET;
1445
1446 if (lp->rx_head == lp->rx_tail)
1447 return 0;
1448
1449 p = lp->rx_base + (lp->rx_head / LDC_PACKET_SIZE);
1450 memcpy(buf, p, LDC_PACKET_SIZE);
1451
1452 new = rx_advance(lp, lp->rx_head);
1453 lp->rx_head = new;
1454
1455 err = __set_rx_head(lp, new);
1456 if (err < 0)
1457 err = -ECONNRESET;
1458 else
1459 err = LDC_PACKET_SIZE;
1460
1461 return err;
1462}
1463
1464static const struct ldc_mode_ops raw_ops = {
1465 .write = write_raw,
1466 .read = read_raw,
1467};
1468
1469static int write_nonraw(struct ldc_channel *lp, const void *buf,
1470 unsigned int size)
1471{
1472 unsigned long hv_err, tail;
1473 unsigned int copied;
1474 u32 seq;
1475 int err;
1476
1477 hv_err = sun4v_ldc_tx_get_state(lp->id, &lp->tx_head, &lp->tx_tail,
1478 &lp->chan_state);
1479 if (unlikely(hv_err))
1480 return -EBUSY;
1481
1482 if (unlikely(lp->chan_state != LDC_CHANNEL_UP))
1483 return ldc_abort(lp);
1484
1485 if (!tx_has_space_for(lp, size))
1486 return -EAGAIN;
1487
1488 seq = lp->snd_nxt;
1489 copied = 0;
1490 tail = lp->tx_tail;
1491 while (copied < size) {
1492 struct ldc_packet *p = lp->tx_base + (tail / LDC_PACKET_SIZE);
1493 u8 *data = ((lp->cfg.mode == LDC_MODE_UNRELIABLE) ?
1494 p->u.u_data :
1495 p->u.r.r_data);
1496 int data_len;
1497
1498 p->type = LDC_DATA;
1499 p->stype = LDC_INFO;
1500 p->ctrl = 0;
1501
1502 data_len = size - copied;
1503 if (data_len > lp->mss)
1504 data_len = lp->mss;
1505
1506 BUG_ON(data_len > LDC_LEN);
1507
1508 p->env = (data_len |
1509 (copied == 0 ? LDC_START : 0) |
1510 (data_len == size - copied ? LDC_STOP : 0));
1511
1512 p->seqid = ++seq;
1513
1514 ldcdbg(DATA, "SENT DATA [%02x:%02x:%02x:%02x:%08x]\n",
1515 p->type,
1516 p->stype,
1517 p->ctrl,
1518 p->env,
1519 p->seqid);
1520
1521 memcpy(data, buf, data_len);
1522 buf += data_len;
1523 copied += data_len;
1524
1525 tail = tx_advance(lp, tail);
1526 }
1527
1528 err = set_tx_tail(lp, tail);
1529 if (!err) {
1530 lp->snd_nxt = seq;
1531 err = size;
1532 }
1533
1534 return err;
1535}
1536
1537static int rx_bad_seq(struct ldc_channel *lp, struct ldc_packet *p,
1538 struct ldc_packet *first_frag)
1539{
1540 int err;
1541
1542 if (first_frag)
1543 lp->rcv_nxt = first_frag->seqid - 1;
1544
1545 err = send_data_nack(lp, p);
1546 if (err)
1547 return err;
1548
1549 err = __set_rx_head(lp, lp->rx_tail);
1550 if (err < 0)
1551 return ldc_abort(lp);
1552
1553 return 0;
1554}
1555
1556static int data_ack_nack(struct ldc_channel *lp, struct ldc_packet *p)
1557{
1558 if (p->stype & LDC_ACK) {
1559 int err = process_data_ack(lp, p);
1560 if (err)
1561 return err;
1562 }
1563 if (p->stype & LDC_NACK)
1564 return ldc_abort(lp);
1565
1566 return 0;
1567}
1568
1569static int rx_data_wait(struct ldc_channel *lp, unsigned long cur_head)
1570{
1571 unsigned long dummy;
1572 int limit = 1000;
1573
1574 ldcdbg(DATA, "DATA WAIT cur_head[%lx] rx_head[%lx] rx_tail[%lx]\n",
1575 cur_head, lp->rx_head, lp->rx_tail);
1576 while (limit-- > 0) {
1577 unsigned long hv_err;
1578
1579 hv_err = sun4v_ldc_rx_get_state(lp->id,
1580 &dummy,
1581 &lp->rx_tail,
1582 &lp->chan_state);
1583 if (hv_err)
1584 return ldc_abort(lp);
1585
1586 if (lp->chan_state == LDC_CHANNEL_DOWN ||
1587 lp->chan_state == LDC_CHANNEL_RESETTING)
1588 return -ECONNRESET;
1589
1590 if (cur_head != lp->rx_tail) {
1591 ldcdbg(DATA, "DATA WAIT DONE "
1592 "head[%lx] tail[%lx] chan_state[%lx]\n",
1593 dummy, lp->rx_tail, lp->chan_state);
1594 return 0;
1595 }
1596
1597 udelay(1);
1598 }
1599 return -EAGAIN;
1600}
1601
1602static int rx_set_head(struct ldc_channel *lp, unsigned long head)
1603{
1604 int err = __set_rx_head(lp, head);
1605
1606 if (err < 0)
1607 return ldc_abort(lp);
1608
1609 lp->rx_head = head;
1610 return 0;
1611}
1612
1613static void send_data_ack(struct ldc_channel *lp)
1614{
1615 unsigned long new_tail;
1616 struct ldc_packet *p;
1617
1618 p = data_get_tx_packet(lp, &new_tail);
1619 if (likely(p)) {
1620 int err;
1621
1622 memset(p, 0, sizeof(*p));
1623 p->type = LDC_DATA;
1624 p->stype = LDC_ACK;
1625 p->ctrl = 0;
1626 p->seqid = lp->snd_nxt + 1;
1627 p->u.r.ackid = lp->rcv_nxt;
1628
1629 err = send_tx_packet(lp, p, new_tail);
1630 if (!err)
1631 lp->snd_nxt++;
1632 }
1633}
1634
1635static int read_nonraw(struct ldc_channel *lp, void *buf, unsigned int size)
1636{
1637 struct ldc_packet *first_frag;
1638 unsigned long hv_err, new;
1639 int err, copied;
1640
1641 hv_err = sun4v_ldc_rx_get_state(lp->id,
1642 &lp->rx_head,
1643 &lp->rx_tail,
1644 &lp->chan_state);
1645 if (hv_err)
1646 return ldc_abort(lp);
1647
1648 if (lp->chan_state == LDC_CHANNEL_DOWN ||
1649 lp->chan_state == LDC_CHANNEL_RESETTING)
1650 return -ECONNRESET;
1651
1652 if (lp->rx_head == lp->rx_tail)
1653 return 0;
1654
1655 first_frag = NULL;
1656 copied = err = 0;
1657 new = lp->rx_head;
1658 while (1) {
1659 struct ldc_packet *p;
1660 int pkt_len;
1661
1662 BUG_ON(new == lp->rx_tail);
1663 p = lp->rx_base + (new / LDC_PACKET_SIZE);
1664
1665 ldcdbg(RX, "RX read pkt[%02x:%02x:%02x:%02x:%08x:%08x] "
1666 "rcv_nxt[%08x]\n",
1667 p->type,
1668 p->stype,
1669 p->ctrl,
1670 p->env,
1671 p->seqid,
1672 p->u.r.ackid,
1673 lp->rcv_nxt);
1674
1675 if (unlikely(!rx_seq_ok(lp, p->seqid))) {
1676 err = rx_bad_seq(lp, p, first_frag);
1677 copied = 0;
1678 break;
1679 }
1680
1681 if (p->type & LDC_CTRL) {
1682 err = process_control_frame(lp, p);
1683 if (err < 0)
1684 break;
1685 err = 0;
1686 }
1687
1688 lp->rcv_nxt = p->seqid;
1689
1690 if (!(p->type & LDC_DATA)) {
1691 new = rx_advance(lp, new);
1692 goto no_data;
1693 }
1694 if (p->stype & (LDC_ACK | LDC_NACK)) {
1695 err = data_ack_nack(lp, p);
1696 if (err)
1697 break;
1698 }
1699 if (!(p->stype & LDC_INFO)) {
1700 new = rx_advance(lp, new);
1701 err = rx_set_head(lp, new);
1702 if (err)
1703 break;
1704 goto no_data;
1705 }
1706
1707 pkt_len = p->env & LDC_LEN;
1708
1709 /* Every initial packet starts with the START bit set.
1710 *
1711 * Singleton packets will have both START+STOP set.
1712 *
1713 * Fragments will have START set in the first frame, STOP
1714 * set in the last frame, and neither bit set in middle
1715 * frames of the packet.
1716 *
1717 * Therefore if we are at the beginning of a packet and
1718 * we don't see START, or we are in the middle of a fragmented
1719 * packet and do see START, we are unsynchronized and should
1720 * flush the RX queue.
1721 */
1722 if ((first_frag == NULL && !(p->env & LDC_START)) ||
1723 (first_frag != NULL && (p->env & LDC_START))) {
1724 if (!first_frag)
1725 new = rx_advance(lp, new);
1726
1727 err = rx_set_head(lp, new);
1728 if (err)
1729 break;
1730
1731 if (!first_frag)
1732 goto no_data;
1733 }
1734 if (!first_frag)
1735 first_frag = p;
1736
1737 if (pkt_len > size - copied) {
1738 /* User didn't give us a big enough buffer,
1739 * what to do? This is a pretty serious error.
1740 *
1741 * Since we haven't updated the RX ring head to
1742 * consume any of the packets, signal the error
1743 * to the user and just leave the RX ring alone.
1744 *
1745 * This seems the best behavior because this allows
1746 * a user of the LDC layer to start with a small
1747 * RX buffer for ldc_read() calls and use -EMSGSIZE
1748 * as a cue to enlarge it's read buffer.
1749 */
1750 err = -EMSGSIZE;
1751 break;
1752 }
1753
1754 /* Ok, we are gonna eat this one. */
1755 new = rx_advance(lp, new);
1756
1757 memcpy(buf,
1758 (lp->cfg.mode == LDC_MODE_UNRELIABLE ?
1759 p->u.u_data : p->u.r.r_data), pkt_len);
1760 buf += pkt_len;
1761 copied += pkt_len;
1762
1763 if (p->env & LDC_STOP)
1764 break;
1765
1766no_data:
1767 if (new == lp->rx_tail) {
1768 err = rx_data_wait(lp, new);
1769 if (err)
1770 break;
1771 }
1772 }
1773
1774 if (!err)
1775 err = rx_set_head(lp, new);
1776
1777 if (err && first_frag)
1778 lp->rcv_nxt = first_frag->seqid - 1;
1779
1780 if (!err) {
1781 err = copied;
1782 if (err > 0 && lp->cfg.mode != LDC_MODE_UNRELIABLE)
1783 send_data_ack(lp);
1784 }
1785
1786 return err;
1787}
1788
1789static const struct ldc_mode_ops nonraw_ops = {
1790 .write = write_nonraw,
1791 .read = read_nonraw,
1792};
1793
1794static int write_stream(struct ldc_channel *lp, const void *buf,
1795 unsigned int size)
1796{
1797 if (size > lp->cfg.mtu)
1798 size = lp->cfg.mtu;
1799 return write_nonraw(lp, buf, size);
1800}
1801
1802static int read_stream(struct ldc_channel *lp, void *buf, unsigned int size)
1803{
1804 if (!lp->mssbuf_len) {
1805 int err = read_nonraw(lp, lp->mssbuf, lp->cfg.mtu);
1806 if (err < 0)
1807 return err;
1808
1809 lp->mssbuf_len = err;
1810 lp->mssbuf_off = 0;
1811 }
1812
1813 if (size > lp->mssbuf_len)
1814 size = lp->mssbuf_len;
1815 memcpy(buf, lp->mssbuf + lp->mssbuf_off, size);
1816
1817 lp->mssbuf_off += size;
1818 lp->mssbuf_len -= size;
1819
1820 return size;
1821}
1822
1823static const struct ldc_mode_ops stream_ops = {
1824 .write = write_stream,
1825 .read = read_stream,
1826};
1827
1828int ldc_write(struct ldc_channel *lp, const void *buf, unsigned int size)
1829{
1830 unsigned long flags;
1831 int err;
1832
1833 if (!buf)
1834 return -EINVAL;
1835
1836 if (!size)
1837 return 0;
1838
1839 spin_lock_irqsave(&lp->lock, flags);
1840
1841 if (lp->hs_state != LDC_HS_COMPLETE)
1842 err = -ENOTCONN;
1843 else
1844 err = lp->mops->write(lp, buf, size);
1845
1846 spin_unlock_irqrestore(&lp->lock, flags);
1847
1848 return err;
1849}
1850EXPORT_SYMBOL(ldc_write);
1851
1852int ldc_read(struct ldc_channel *lp, void *buf, unsigned int size)
1853{
1854 unsigned long flags;
1855 int err;
1856
1857 if (!buf)
1858 return -EINVAL;
1859
1860 if (!size)
1861 return 0;
1862
1863 spin_lock_irqsave(&lp->lock, flags);
1864
1865 if (lp->hs_state != LDC_HS_COMPLETE)
1866 err = -ENOTCONN;
1867 else
1868 err = lp->mops->read(lp, buf, size);
1869
1870 spin_unlock_irqrestore(&lp->lock, flags);
1871
1872 return err;
1873}
1874EXPORT_SYMBOL(ldc_read);
1875
1876static long arena_alloc(struct ldc_iommu *iommu, unsigned long npages)
1877{
1878 struct iommu_arena *arena = &iommu->arena;
1879 unsigned long n, i, start, end, limit;
1880 int pass;
1881
1882 limit = arena->limit;
1883 start = arena->hint;
1884 pass = 0;
1885
1886again:
1887 n = find_next_zero_bit(arena->map, limit, start);
1888 end = n + npages;
1889 if (unlikely(end >= limit)) {
1890 if (likely(pass < 1)) {
1891 limit = start;
1892 start = 0;
1893 pass++;
1894 goto again;
1895 } else {
1896 /* Scanned the whole thing, give up. */
1897 return -1;
1898 }
1899 }
1900
1901 for (i = n; i < end; i++) {
1902 if (test_bit(i, arena->map)) {
1903 start = i + 1;
1904 goto again;
1905 }
1906 }
1907
1908 for (i = n; i < end; i++)
1909 __set_bit(i, arena->map);
1910
1911 arena->hint = end;
1912
1913 return n;
1914}
1915
1916#define COOKIE_PGSZ_CODE 0xf000000000000000ULL
1917#define COOKIE_PGSZ_CODE_SHIFT 60ULL
1918
1919static u64 pagesize_code(void)
1920{
1921 switch (PAGE_SIZE) {
1922 default:
1923 case (8ULL * 1024ULL):
1924 return 0;
1925 case (64ULL * 1024ULL):
1926 return 1;
1927 case (512ULL * 1024ULL):
1928 return 2;
1929 case (4ULL * 1024ULL * 1024ULL):
1930 return 3;
1931 case (32ULL * 1024ULL * 1024ULL):
1932 return 4;
1933 case (256ULL * 1024ULL * 1024ULL):
1934 return 5;
1935 }
1936}
1937
1938static u64 make_cookie(u64 index, u64 pgsz_code, u64 page_offset)
1939{
1940 return ((pgsz_code << COOKIE_PGSZ_CODE_SHIFT) |
1941 (index << PAGE_SHIFT) |
1942 page_offset);
1943}
1944
1945static u64 cookie_to_index(u64 cookie, unsigned long *shift)
1946{
1947 u64 szcode = cookie >> COOKIE_PGSZ_CODE_SHIFT;
1948
1949 cookie &= ~COOKIE_PGSZ_CODE;
1950
1951 *shift = szcode * 3;
1952
1953 return (cookie >> (13ULL + (szcode * 3ULL)));
1954}
1955
1956static struct ldc_mtable_entry *alloc_npages(struct ldc_iommu *iommu,
1957 unsigned long npages)
1958{
1959 long entry;
1960
1961 entry = arena_alloc(iommu, npages);
1962 if (unlikely(entry < 0))
1963 return NULL;
1964
1965 return iommu->page_table + entry;
1966}
1967
1968static u64 perm_to_mte(unsigned int map_perm)
1969{
1970 u64 mte_base;
1971
1972 mte_base = pagesize_code();
1973
1974 if (map_perm & LDC_MAP_SHADOW) {
1975 if (map_perm & LDC_MAP_R)
1976 mte_base |= LDC_MTE_COPY_R;
1977 if (map_perm & LDC_MAP_W)
1978 mte_base |= LDC_MTE_COPY_W;
1979 }
1980 if (map_perm & LDC_MAP_DIRECT) {
1981 if (map_perm & LDC_MAP_R)
1982 mte_base |= LDC_MTE_READ;
1983 if (map_perm & LDC_MAP_W)
1984 mte_base |= LDC_MTE_WRITE;
1985 if (map_perm & LDC_MAP_X)
1986 mte_base |= LDC_MTE_EXEC;
1987 }
1988 if (map_perm & LDC_MAP_IO) {
1989 if (map_perm & LDC_MAP_R)
1990 mte_base |= LDC_MTE_IOMMU_R;
1991 if (map_perm & LDC_MAP_W)
1992 mte_base |= LDC_MTE_IOMMU_W;
1993 }
1994
1995 return mte_base;
1996}
1997
1998static int pages_in_region(unsigned long base, long len)
1999{
2000 int count = 0;
2001
2002 do {
2003 unsigned long new = (base + PAGE_SIZE) & PAGE_MASK;
2004
2005 len -= (new - base);
2006 base = new;
2007 count++;
2008 } while (len > 0);
2009
2010 return count;
2011}
2012
2013struct cookie_state {
2014 struct ldc_mtable_entry *page_table;
2015 struct ldc_trans_cookie *cookies;
2016 u64 mte_base;
2017 u64 prev_cookie;
2018 u32 pte_idx;
2019 u32 nc;
2020};
2021
2022static void fill_cookies(struct cookie_state *sp, unsigned long pa,
2023 unsigned long off, unsigned long len)
2024{
2025 do {
2026 unsigned long tlen, new = pa + PAGE_SIZE;
2027 u64 this_cookie;
2028
2029 sp->page_table[sp->pte_idx].mte = sp->mte_base | pa;
2030
2031 tlen = PAGE_SIZE;
2032 if (off)
2033 tlen = PAGE_SIZE - off;
2034 if (tlen > len)
2035 tlen = len;
2036
2037 this_cookie = make_cookie(sp->pte_idx,
2038 pagesize_code(), off);
2039
2040 off = 0;
2041
2042 if (this_cookie == sp->prev_cookie) {
2043 sp->cookies[sp->nc - 1].cookie_size += tlen;
2044 } else {
2045 sp->cookies[sp->nc].cookie_addr = this_cookie;
2046 sp->cookies[sp->nc].cookie_size = tlen;
2047 sp->nc++;
2048 }
2049 sp->prev_cookie = this_cookie + tlen;
2050
2051 sp->pte_idx++;
2052
2053 len -= tlen;
2054 pa = new;
2055 } while (len > 0);
2056}
2057
2058static int sg_count_one(struct scatterlist *sg)
2059{
2060 unsigned long base = page_to_pfn(sg_page(sg)) << PAGE_SHIFT;
2061 long len = sg->length;
2062
2063 if ((sg->offset | len) & (8UL - 1))
2064 return -EFAULT;
2065
2066 return pages_in_region(base + sg->offset, len);
2067}
2068
2069static int sg_count_pages(struct scatterlist *sg, int num_sg)
2070{
2071 int count;
2072 int i;
2073
2074 count = 0;
2075 for (i = 0; i < num_sg; i++) {
2076 int err = sg_count_one(sg + i);
2077 if (err < 0)
2078 return err;
2079 count += err;
2080 }
2081
2082 return count;
2083}
2084
2085int ldc_map_sg(struct ldc_channel *lp,
2086 struct scatterlist *sg, int num_sg,
2087 struct ldc_trans_cookie *cookies, int ncookies,
2088 unsigned int map_perm)
2089{
2090 unsigned long i, npages, flags;
2091 struct ldc_mtable_entry *base;
2092 struct cookie_state state;
2093 struct ldc_iommu *iommu;
2094 int err;
2095
2096 if (map_perm & ~LDC_MAP_ALL)
2097 return -EINVAL;
2098
2099 err = sg_count_pages(sg, num_sg);
2100 if (err < 0)
2101 return err;
2102
2103 npages = err;
2104 if (err > ncookies)
2105 return -EMSGSIZE;
2106
2107 iommu = &lp->iommu;
2108
2109 spin_lock_irqsave(&iommu->lock, flags);
2110 base = alloc_npages(iommu, npages);
2111 spin_unlock_irqrestore(&iommu->lock, flags);
2112
2113 if (!base)
2114 return -ENOMEM;
2115
2116 state.page_table = iommu->page_table;
2117 state.cookies = cookies;
2118 state.mte_base = perm_to_mte(map_perm);
2119 state.prev_cookie = ~(u64)0;
2120 state.pte_idx = (base - iommu->page_table);
2121 state.nc = 0;
2122
2123 for (i = 0; i < num_sg; i++)
2124 fill_cookies(&state, page_to_pfn(sg_page(&sg[i])) << PAGE_SHIFT,
2125 sg[i].offset, sg[i].length);
2126
2127 return state.nc;
2128}
2129EXPORT_SYMBOL(ldc_map_sg);
2130
2131int ldc_map_single(struct ldc_channel *lp,
2132 void *buf, unsigned int len,
2133 struct ldc_trans_cookie *cookies, int ncookies,
2134 unsigned int map_perm)
2135{
2136 unsigned long npages, pa, flags;
2137 struct ldc_mtable_entry *base;
2138 struct cookie_state state;
2139 struct ldc_iommu *iommu;
2140
2141 if ((map_perm & ~LDC_MAP_ALL) || (ncookies < 1))
2142 return -EINVAL;
2143
2144 pa = __pa(buf);
2145 if ((pa | len) & (8UL - 1))
2146 return -EFAULT;
2147
2148 npages = pages_in_region(pa, len);
2149
2150 iommu = &lp->iommu;
2151
2152 spin_lock_irqsave(&iommu->lock, flags);
2153 base = alloc_npages(iommu, npages);
2154 spin_unlock_irqrestore(&iommu->lock, flags);
2155
2156 if (!base)
2157 return -ENOMEM;
2158
2159 state.page_table = iommu->page_table;
2160 state.cookies = cookies;
2161 state.mte_base = perm_to_mte(map_perm);
2162 state.prev_cookie = ~(u64)0;
2163 state.pte_idx = (base - iommu->page_table);
2164 state.nc = 0;
2165 fill_cookies(&state, (pa & PAGE_MASK), (pa & ~PAGE_MASK), len);
2166 BUG_ON(state.nc != 1);
2167
2168 return state.nc;
2169}
2170EXPORT_SYMBOL(ldc_map_single);
2171
2172static void free_npages(unsigned long id, struct ldc_iommu *iommu,
2173 u64 cookie, u64 size)
2174{
2175 struct iommu_arena *arena = &iommu->arena;
2176 unsigned long i, shift, index, npages;
2177 struct ldc_mtable_entry *base;
2178
2179 npages = PAGE_ALIGN(((cookie & ~PAGE_MASK) + size)) >> PAGE_SHIFT;
2180 index = cookie_to_index(cookie, &shift);
2181 base = iommu->page_table + index;
2182
2183 BUG_ON(index > arena->limit ||
2184 (index + npages) > arena->limit);
2185
2186 for (i = 0; i < npages; i++) {
2187 if (base->cookie)
2188 sun4v_ldc_revoke(id, cookie + (i << shift),
2189 base->cookie);
2190 base->mte = 0;
2191 __clear_bit(index + i, arena->map);
2192 }
2193}
2194
2195void ldc_unmap(struct ldc_channel *lp, struct ldc_trans_cookie *cookies,
2196 int ncookies)
2197{
2198 struct ldc_iommu *iommu = &lp->iommu;
2199 unsigned long flags;
2200 int i;
2201
2202 spin_lock_irqsave(&iommu->lock, flags);
2203 for (i = 0; i < ncookies; i++) {
2204 u64 addr = cookies[i].cookie_addr;
2205 u64 size = cookies[i].cookie_size;
2206
2207 free_npages(lp->id, iommu, addr, size);
2208 }
2209 spin_unlock_irqrestore(&iommu->lock, flags);
2210}
2211EXPORT_SYMBOL(ldc_unmap);
2212
2213int ldc_copy(struct ldc_channel *lp, int copy_dir,
2214 void *buf, unsigned int len, unsigned long offset,
2215 struct ldc_trans_cookie *cookies, int ncookies)
2216{
2217 unsigned int orig_len;
2218 unsigned long ra;
2219 int i;
2220
2221 if (copy_dir != LDC_COPY_IN && copy_dir != LDC_COPY_OUT) {
2222 printk(KERN_ERR PFX "ldc_copy: ID[%lu] Bad copy_dir[%d]\n",
2223 lp->id, copy_dir);
2224 return -EINVAL;
2225 }
2226
2227 ra = __pa(buf);
2228 if ((ra | len | offset) & (8UL - 1)) {
2229 printk(KERN_ERR PFX "ldc_copy: ID[%lu] Unaligned buffer "
2230 "ra[%lx] len[%x] offset[%lx]\n",
2231 lp->id, ra, len, offset);
2232 return -EFAULT;
2233 }
2234
2235 if (lp->hs_state != LDC_HS_COMPLETE ||
2236 (lp->flags & LDC_FLAG_RESET)) {
2237 printk(KERN_ERR PFX "ldc_copy: ID[%lu] Link down hs_state[%x] "
2238 "flags[%x]\n", lp->id, lp->hs_state, lp->flags);
2239 return -ECONNRESET;
2240 }
2241
2242 orig_len = len;
2243 for (i = 0; i < ncookies; i++) {
2244 unsigned long cookie_raddr = cookies[i].cookie_addr;
2245 unsigned long this_len = cookies[i].cookie_size;
2246 unsigned long actual_len;
2247
2248 if (unlikely(offset)) {
2249 unsigned long this_off = offset;
2250
2251 if (this_off > this_len)
2252 this_off = this_len;
2253
2254 offset -= this_off;
2255 this_len -= this_off;
2256 if (!this_len)
2257 continue;
2258 cookie_raddr += this_off;
2259 }
2260
2261 if (this_len > len)
2262 this_len = len;
2263
2264 while (1) {
2265 unsigned long hv_err;
2266
2267 hv_err = sun4v_ldc_copy(lp->id, copy_dir,
2268 cookie_raddr, ra,
2269 this_len, &actual_len);
2270 if (unlikely(hv_err)) {
2271 printk(KERN_ERR PFX "ldc_copy: ID[%lu] "
2272 "HV error %lu\n",
2273 lp->id, hv_err);
2274 if (lp->hs_state != LDC_HS_COMPLETE ||
2275 (lp->flags & LDC_FLAG_RESET))
2276 return -ECONNRESET;
2277 else
2278 return -EFAULT;
2279 }
2280
2281 cookie_raddr += actual_len;
2282 ra += actual_len;
2283 len -= actual_len;
2284 if (actual_len == this_len)
2285 break;
2286
2287 this_len -= actual_len;
2288 }
2289
2290 if (!len)
2291 break;
2292 }
2293
2294 /* It is caller policy what to do about short copies.
2295 * For example, a networking driver can declare the
2296 * packet a runt and drop it.
2297 */
2298
2299 return orig_len - len;
2300}
2301EXPORT_SYMBOL(ldc_copy);
2302
2303void *ldc_alloc_exp_dring(struct ldc_channel *lp, unsigned int len,
2304 struct ldc_trans_cookie *cookies, int *ncookies,
2305 unsigned int map_perm)
2306{
2307 void *buf;
2308 int err;
2309
2310 if (len & (8UL - 1))
2311 return ERR_PTR(-EINVAL);
2312
2313 buf = kzalloc(len, GFP_KERNEL);
2314 if (!buf)
2315 return ERR_PTR(-ENOMEM);
2316
2317 err = ldc_map_single(lp, buf, len, cookies, *ncookies, map_perm);
2318 if (err < 0) {
2319 kfree(buf);
2320 return ERR_PTR(err);
2321 }
2322 *ncookies = err;
2323
2324 return buf;
2325}
2326EXPORT_SYMBOL(ldc_alloc_exp_dring);
2327
2328void ldc_free_exp_dring(struct ldc_channel *lp, void *buf, unsigned int len,
2329 struct ldc_trans_cookie *cookies, int ncookies)
2330{
2331 ldc_unmap(lp, cookies, ncookies);
2332 kfree(buf);
2333}
2334EXPORT_SYMBOL(ldc_free_exp_dring);
2335
2336static int __init ldc_init(void)
2337{
2338 unsigned long major, minor;
2339 struct mdesc_handle *hp;
2340 const u64 *v;
2341 int err;
2342 u64 mp;
2343
2344 hp = mdesc_grab();
2345 if (!hp)
2346 return -ENODEV;
2347
2348 mp = mdesc_node_by_name(hp, MDESC_NODE_NULL, "platform");
2349 err = -ENODEV;
2350 if (mp == MDESC_NODE_NULL)
2351 goto out;
2352
2353 v = mdesc_get_property(hp, mp, "domaining-enabled", NULL);
2354 if (!v)
2355 goto out;
2356
2357 major = 1;
2358 minor = 0;
2359 if (sun4v_hvapi_register(HV_GRP_LDOM, major, &minor)) {
2360 printk(KERN_INFO PFX "Could not register LDOM hvapi.\n");
2361 goto out;
2362 }
2363
2364 printk(KERN_INFO "%s", version);
2365
2366 if (!*v) {
2367 printk(KERN_INFO PFX "Domaining disabled.\n");
2368 goto out;
2369 }
2370 ldom_domaining_enabled = 1;
2371 err = 0;
2372
2373out:
2374 mdesc_release(hp);
2375 return err;
2376}
2377
2378core_initcall(ldc_init);
diff --git a/arch/sparc/kernel/mdesc.c b/arch/sparc/kernel/mdesc.c
new file mode 100644
index 000000000000..dde52bcf5c64
--- /dev/null
+++ b/arch/sparc/kernel/mdesc.c
@@ -0,0 +1,916 @@
1/* mdesc.c: Sun4V machine description handling.
2 *
3 * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
4 */
5#include <linux/kernel.h>
6#include <linux/types.h>
7#include <linux/lmb.h>
8#include <linux/log2.h>
9#include <linux/list.h>
10#include <linux/slab.h>
11#include <linux/mm.h>
12#include <linux/miscdevice.h>
13
14#include <asm/hypervisor.h>
15#include <asm/mdesc.h>
16#include <asm/prom.h>
17#include <asm/oplib.h>
18#include <asm/smp.h>
19
20/* Unlike the OBP device tree, the machine description is a full-on
21 * DAG. An arbitrary number of ARCs are possible from one
22 * node to other nodes and thus we can't use the OBP device_node
23 * data structure to represent these nodes inside of the kernel.
24 *
25 * Actually, it isn't even a DAG, because there are back pointers
26 * which create cycles in the graph.
27 *
28 * mdesc_hdr and mdesc_elem describe the layout of the data structure
29 * we get from the Hypervisor.
30 */
31struct mdesc_hdr {
32 u32 version; /* Transport version */
33 u32 node_sz; /* node block size */
34 u32 name_sz; /* name block size */
35 u32 data_sz; /* data block size */
36} __attribute__((aligned(16)));
37
38struct mdesc_elem {
39 u8 tag;
40#define MD_LIST_END 0x00
41#define MD_NODE 0x4e
42#define MD_NODE_END 0x45
43#define MD_NOOP 0x20
44#define MD_PROP_ARC 0x61
45#define MD_PROP_VAL 0x76
46#define MD_PROP_STR 0x73
47#define MD_PROP_DATA 0x64
48 u8 name_len;
49 u16 resv;
50 u32 name_offset;
51 union {
52 struct {
53 u32 data_len;
54 u32 data_offset;
55 } data;
56 u64 val;
57 } d;
58};
59
60struct mdesc_mem_ops {
61 struct mdesc_handle *(*alloc)(unsigned int mdesc_size);
62 void (*free)(struct mdesc_handle *handle);
63};
64
65struct mdesc_handle {
66 struct list_head list;
67 struct mdesc_mem_ops *mops;
68 void *self_base;
69 atomic_t refcnt;
70 unsigned int handle_size;
71 struct mdesc_hdr mdesc;
72};
73
74static void mdesc_handle_init(struct mdesc_handle *hp,
75 unsigned int handle_size,
76 void *base)
77{
78 BUG_ON(((unsigned long)&hp->mdesc) & (16UL - 1));
79
80 memset(hp, 0, handle_size);
81 INIT_LIST_HEAD(&hp->list);
82 hp->self_base = base;
83 atomic_set(&hp->refcnt, 1);
84 hp->handle_size = handle_size;
85}
86
87static struct mdesc_handle * __init mdesc_lmb_alloc(unsigned int mdesc_size)
88{
89 unsigned int handle_size, alloc_size;
90 struct mdesc_handle *hp;
91 unsigned long paddr;
92
93 handle_size = (sizeof(struct mdesc_handle) -
94 sizeof(struct mdesc_hdr) +
95 mdesc_size);
96 alloc_size = PAGE_ALIGN(handle_size);
97
98 paddr = lmb_alloc(alloc_size, PAGE_SIZE);
99
100 hp = NULL;
101 if (paddr) {
102 hp = __va(paddr);
103 mdesc_handle_init(hp, handle_size, hp);
104 }
105 return hp;
106}
107
108static void mdesc_lmb_free(struct mdesc_handle *hp)
109{
110 unsigned int alloc_size, handle_size = hp->handle_size;
111 unsigned long start, end;
112
113 BUG_ON(atomic_read(&hp->refcnt) != 0);
114 BUG_ON(!list_empty(&hp->list));
115
116 alloc_size = PAGE_ALIGN(handle_size);
117
118 start = (unsigned long) hp;
119 end = start + alloc_size;
120
121 while (start < end) {
122 struct page *p;
123
124 p = virt_to_page(start);
125 ClearPageReserved(p);
126 __free_page(p);
127 start += PAGE_SIZE;
128 }
129}
130
131static struct mdesc_mem_ops lmb_mdesc_ops = {
132 .alloc = mdesc_lmb_alloc,
133 .free = mdesc_lmb_free,
134};
135
136static struct mdesc_handle *mdesc_kmalloc(unsigned int mdesc_size)
137{
138 unsigned int handle_size;
139 void *base;
140
141 handle_size = (sizeof(struct mdesc_handle) -
142 sizeof(struct mdesc_hdr) +
143 mdesc_size);
144
145 base = kmalloc(handle_size + 15, GFP_KERNEL | __GFP_NOFAIL);
146 if (base) {
147 struct mdesc_handle *hp;
148 unsigned long addr;
149
150 addr = (unsigned long)base;
151 addr = (addr + 15UL) & ~15UL;
152 hp = (struct mdesc_handle *) addr;
153
154 mdesc_handle_init(hp, handle_size, base);
155 return hp;
156 }
157
158 return NULL;
159}
160
161static void mdesc_kfree(struct mdesc_handle *hp)
162{
163 BUG_ON(atomic_read(&hp->refcnt) != 0);
164 BUG_ON(!list_empty(&hp->list));
165
166 kfree(hp->self_base);
167}
168
169static struct mdesc_mem_ops kmalloc_mdesc_memops = {
170 .alloc = mdesc_kmalloc,
171 .free = mdesc_kfree,
172};
173
174static struct mdesc_handle *mdesc_alloc(unsigned int mdesc_size,
175 struct mdesc_mem_ops *mops)
176{
177 struct mdesc_handle *hp = mops->alloc(mdesc_size);
178
179 if (hp)
180 hp->mops = mops;
181
182 return hp;
183}
184
185static void mdesc_free(struct mdesc_handle *hp)
186{
187 hp->mops->free(hp);
188}
189
190static struct mdesc_handle *cur_mdesc;
191static LIST_HEAD(mdesc_zombie_list);
192static DEFINE_SPINLOCK(mdesc_lock);
193
194struct mdesc_handle *mdesc_grab(void)
195{
196 struct mdesc_handle *hp;
197 unsigned long flags;
198
199 spin_lock_irqsave(&mdesc_lock, flags);
200 hp = cur_mdesc;
201 if (hp)
202 atomic_inc(&hp->refcnt);
203 spin_unlock_irqrestore(&mdesc_lock, flags);
204
205 return hp;
206}
207EXPORT_SYMBOL(mdesc_grab);
208
209void mdesc_release(struct mdesc_handle *hp)
210{
211 unsigned long flags;
212
213 spin_lock_irqsave(&mdesc_lock, flags);
214 if (atomic_dec_and_test(&hp->refcnt)) {
215 list_del_init(&hp->list);
216 hp->mops->free(hp);
217 }
218 spin_unlock_irqrestore(&mdesc_lock, flags);
219}
220EXPORT_SYMBOL(mdesc_release);
221
222static DEFINE_MUTEX(mdesc_mutex);
223static struct mdesc_notifier_client *client_list;
224
225void mdesc_register_notifier(struct mdesc_notifier_client *client)
226{
227 u64 node;
228
229 mutex_lock(&mdesc_mutex);
230 client->next = client_list;
231 client_list = client;
232
233 mdesc_for_each_node_by_name(cur_mdesc, node, client->node_name)
234 client->add(cur_mdesc, node);
235
236 mutex_unlock(&mdesc_mutex);
237}
238
239static const u64 *parent_cfg_handle(struct mdesc_handle *hp, u64 node)
240{
241 const u64 *id;
242 u64 a;
243
244 id = NULL;
245 mdesc_for_each_arc(a, hp, node, MDESC_ARC_TYPE_BACK) {
246 u64 target;
247
248 target = mdesc_arc_target(hp, a);
249 id = mdesc_get_property(hp, target,
250 "cfg-handle", NULL);
251 if (id)
252 break;
253 }
254
255 return id;
256}
257
258/* Run 'func' on nodes which are in A but not in B. */
259static void invoke_on_missing(const char *name,
260 struct mdesc_handle *a,
261 struct mdesc_handle *b,
262 void (*func)(struct mdesc_handle *, u64))
263{
264 u64 node;
265
266 mdesc_for_each_node_by_name(a, node, name) {
267 int found = 0, is_vdc_port = 0;
268 const char *name_prop;
269 const u64 *id;
270 u64 fnode;
271
272 name_prop = mdesc_get_property(a, node, "name", NULL);
273 if (name_prop && !strcmp(name_prop, "vdc-port")) {
274 is_vdc_port = 1;
275 id = parent_cfg_handle(a, node);
276 } else
277 id = mdesc_get_property(a, node, "id", NULL);
278
279 if (!id) {
280 printk(KERN_ERR "MD: Cannot find ID for %s node.\n",
281 (name_prop ? name_prop : name));
282 continue;
283 }
284
285 mdesc_for_each_node_by_name(b, fnode, name) {
286 const u64 *fid;
287
288 if (is_vdc_port) {
289 name_prop = mdesc_get_property(b, fnode,
290 "name", NULL);
291 if (!name_prop ||
292 strcmp(name_prop, "vdc-port"))
293 continue;
294 fid = parent_cfg_handle(b, fnode);
295 if (!fid) {
296 printk(KERN_ERR "MD: Cannot find ID "
297 "for vdc-port node.\n");
298 continue;
299 }
300 } else
301 fid = mdesc_get_property(b, fnode,
302 "id", NULL);
303
304 if (*id == *fid) {
305 found = 1;
306 break;
307 }
308 }
309 if (!found)
310 func(a, node);
311 }
312}
313
314static void notify_one(struct mdesc_notifier_client *p,
315 struct mdesc_handle *old_hp,
316 struct mdesc_handle *new_hp)
317{
318 invoke_on_missing(p->node_name, old_hp, new_hp, p->remove);
319 invoke_on_missing(p->node_name, new_hp, old_hp, p->add);
320}
321
322static void mdesc_notify_clients(struct mdesc_handle *old_hp,
323 struct mdesc_handle *new_hp)
324{
325 struct mdesc_notifier_client *p = client_list;
326
327 while (p) {
328 notify_one(p, old_hp, new_hp);
329 p = p->next;
330 }
331}
332
333void mdesc_update(void)
334{
335 unsigned long len, real_len, status;
336 struct mdesc_handle *hp, *orig_hp;
337 unsigned long flags;
338
339 mutex_lock(&mdesc_mutex);
340
341 (void) sun4v_mach_desc(0UL, 0UL, &len);
342
343 hp = mdesc_alloc(len, &kmalloc_mdesc_memops);
344 if (!hp) {
345 printk(KERN_ERR "MD: mdesc alloc fails\n");
346 goto out;
347 }
348
349 status = sun4v_mach_desc(__pa(&hp->mdesc), len, &real_len);
350 if (status != HV_EOK || real_len > len) {
351 printk(KERN_ERR "MD: mdesc reread fails with %lu\n",
352 status);
353 atomic_dec(&hp->refcnt);
354 mdesc_free(hp);
355 goto out;
356 }
357
358 spin_lock_irqsave(&mdesc_lock, flags);
359 orig_hp = cur_mdesc;
360 cur_mdesc = hp;
361 spin_unlock_irqrestore(&mdesc_lock, flags);
362
363 mdesc_notify_clients(orig_hp, hp);
364
365 spin_lock_irqsave(&mdesc_lock, flags);
366 if (atomic_dec_and_test(&orig_hp->refcnt))
367 mdesc_free(orig_hp);
368 else
369 list_add(&orig_hp->list, &mdesc_zombie_list);
370 spin_unlock_irqrestore(&mdesc_lock, flags);
371
372out:
373 mutex_unlock(&mdesc_mutex);
374}
375
376static struct mdesc_elem *node_block(struct mdesc_hdr *mdesc)
377{
378 return (struct mdesc_elem *) (mdesc + 1);
379}
380
381static void *name_block(struct mdesc_hdr *mdesc)
382{
383 return ((void *) node_block(mdesc)) + mdesc->node_sz;
384}
385
386static void *data_block(struct mdesc_hdr *mdesc)
387{
388 return ((void *) name_block(mdesc)) + mdesc->name_sz;
389}
390
391u64 mdesc_node_by_name(struct mdesc_handle *hp,
392 u64 from_node, const char *name)
393{
394 struct mdesc_elem *ep = node_block(&hp->mdesc);
395 const char *names = name_block(&hp->mdesc);
396 u64 last_node = hp->mdesc.node_sz / 16;
397 u64 ret;
398
399 if (from_node == MDESC_NODE_NULL) {
400 ret = from_node = 0;
401 } else if (from_node >= last_node) {
402 return MDESC_NODE_NULL;
403 } else {
404 ret = ep[from_node].d.val;
405 }
406
407 while (ret < last_node) {
408 if (ep[ret].tag != MD_NODE)
409 return MDESC_NODE_NULL;
410 if (!strcmp(names + ep[ret].name_offset, name))
411 break;
412 ret = ep[ret].d.val;
413 }
414 if (ret >= last_node)
415 ret = MDESC_NODE_NULL;
416 return ret;
417}
418EXPORT_SYMBOL(mdesc_node_by_name);
419
420const void *mdesc_get_property(struct mdesc_handle *hp, u64 node,
421 const char *name, int *lenp)
422{
423 const char *names = name_block(&hp->mdesc);
424 u64 last_node = hp->mdesc.node_sz / 16;
425 void *data = data_block(&hp->mdesc);
426 struct mdesc_elem *ep;
427
428 if (node == MDESC_NODE_NULL || node >= last_node)
429 return NULL;
430
431 ep = node_block(&hp->mdesc) + node;
432 ep++;
433 for (; ep->tag != MD_NODE_END; ep++) {
434 void *val = NULL;
435 int len = 0;
436
437 switch (ep->tag) {
438 case MD_PROP_VAL:
439 val = &ep->d.val;
440 len = 8;
441 break;
442
443 case MD_PROP_STR:
444 case MD_PROP_DATA:
445 val = data + ep->d.data.data_offset;
446 len = ep->d.data.data_len;
447 break;
448
449 default:
450 break;
451 }
452 if (!val)
453 continue;
454
455 if (!strcmp(names + ep->name_offset, name)) {
456 if (lenp)
457 *lenp = len;
458 return val;
459 }
460 }
461
462 return NULL;
463}
464EXPORT_SYMBOL(mdesc_get_property);
465
466u64 mdesc_next_arc(struct mdesc_handle *hp, u64 from, const char *arc_type)
467{
468 struct mdesc_elem *ep, *base = node_block(&hp->mdesc);
469 const char *names = name_block(&hp->mdesc);
470 u64 last_node = hp->mdesc.node_sz / 16;
471
472 if (from == MDESC_NODE_NULL || from >= last_node)
473 return MDESC_NODE_NULL;
474
475 ep = base + from;
476
477 ep++;
478 for (; ep->tag != MD_NODE_END; ep++) {
479 if (ep->tag != MD_PROP_ARC)
480 continue;
481
482 if (strcmp(names + ep->name_offset, arc_type))
483 continue;
484
485 return ep - base;
486 }
487
488 return MDESC_NODE_NULL;
489}
490EXPORT_SYMBOL(mdesc_next_arc);
491
492u64 mdesc_arc_target(struct mdesc_handle *hp, u64 arc)
493{
494 struct mdesc_elem *ep, *base = node_block(&hp->mdesc);
495
496 ep = base + arc;
497
498 return ep->d.val;
499}
500EXPORT_SYMBOL(mdesc_arc_target);
501
502const char *mdesc_node_name(struct mdesc_handle *hp, u64 node)
503{
504 struct mdesc_elem *ep, *base = node_block(&hp->mdesc);
505 const char *names = name_block(&hp->mdesc);
506 u64 last_node = hp->mdesc.node_sz / 16;
507
508 if (node == MDESC_NODE_NULL || node >= last_node)
509 return NULL;
510
511 ep = base + node;
512 if (ep->tag != MD_NODE)
513 return NULL;
514
515 return names + ep->name_offset;
516}
517EXPORT_SYMBOL(mdesc_node_name);
518
519static void __init report_platform_properties(void)
520{
521 struct mdesc_handle *hp = mdesc_grab();
522 u64 pn = mdesc_node_by_name(hp, MDESC_NODE_NULL, "platform");
523 const char *s;
524 const u64 *v;
525
526 if (pn == MDESC_NODE_NULL) {
527 prom_printf("No platform node in machine-description.\n");
528 prom_halt();
529 }
530
531 s = mdesc_get_property(hp, pn, "banner-name", NULL);
532 printk("PLATFORM: banner-name [%s]\n", s);
533 s = mdesc_get_property(hp, pn, "name", NULL);
534 printk("PLATFORM: name [%s]\n", s);
535
536 v = mdesc_get_property(hp, pn, "hostid", NULL);
537 if (v)
538 printk("PLATFORM: hostid [%08lx]\n", *v);
539 v = mdesc_get_property(hp, pn, "serial#", NULL);
540 if (v)
541 printk("PLATFORM: serial# [%08lx]\n", *v);
542 v = mdesc_get_property(hp, pn, "stick-frequency", NULL);
543 printk("PLATFORM: stick-frequency [%08lx]\n", *v);
544 v = mdesc_get_property(hp, pn, "mac-address", NULL);
545 if (v)
546 printk("PLATFORM: mac-address [%lx]\n", *v);
547 v = mdesc_get_property(hp, pn, "watchdog-resolution", NULL);
548 if (v)
549 printk("PLATFORM: watchdog-resolution [%lu ms]\n", *v);
550 v = mdesc_get_property(hp, pn, "watchdog-max-timeout", NULL);
551 if (v)
552 printk("PLATFORM: watchdog-max-timeout [%lu ms]\n", *v);
553 v = mdesc_get_property(hp, pn, "max-cpus", NULL);
554 if (v)
555 printk("PLATFORM: max-cpus [%lu]\n", *v);
556
557#ifdef CONFIG_SMP
558 {
559 int max_cpu, i;
560
561 if (v) {
562 max_cpu = *v;
563 if (max_cpu > NR_CPUS)
564 max_cpu = NR_CPUS;
565 } else {
566 max_cpu = NR_CPUS;
567 }
568 for (i = 0; i < max_cpu; i++)
569 cpu_set(i, cpu_possible_map);
570 }
571#endif
572
573 mdesc_release(hp);
574}
575
576static void __devinit fill_in_one_cache(cpuinfo_sparc *c,
577 struct mdesc_handle *hp,
578 u64 mp)
579{
580 const u64 *level = mdesc_get_property(hp, mp, "level", NULL);
581 const u64 *size = mdesc_get_property(hp, mp, "size", NULL);
582 const u64 *line_size = mdesc_get_property(hp, mp, "line-size", NULL);
583 const char *type;
584 int type_len;
585
586 type = mdesc_get_property(hp, mp, "type", &type_len);
587
588 switch (*level) {
589 case 1:
590 if (of_find_in_proplist(type, "instn", type_len)) {
591 c->icache_size = *size;
592 c->icache_line_size = *line_size;
593 } else if (of_find_in_proplist(type, "data", type_len)) {
594 c->dcache_size = *size;
595 c->dcache_line_size = *line_size;
596 }
597 break;
598
599 case 2:
600 c->ecache_size = *size;
601 c->ecache_line_size = *line_size;
602 break;
603
604 default:
605 break;
606 }
607
608 if (*level == 1) {
609 u64 a;
610
611 mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) {
612 u64 target = mdesc_arc_target(hp, a);
613 const char *name = mdesc_node_name(hp, target);
614
615 if (!strcmp(name, "cache"))
616 fill_in_one_cache(c, hp, target);
617 }
618 }
619}
620
621static void __devinit mark_core_ids(struct mdesc_handle *hp, u64 mp,
622 int core_id)
623{
624 u64 a;
625
626 mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) {
627 u64 t = mdesc_arc_target(hp, a);
628 const char *name;
629 const u64 *id;
630
631 name = mdesc_node_name(hp, t);
632 if (!strcmp(name, "cpu")) {
633 id = mdesc_get_property(hp, t, "id", NULL);
634 if (*id < NR_CPUS)
635 cpu_data(*id).core_id = core_id;
636 } else {
637 u64 j;
638
639 mdesc_for_each_arc(j, hp, t, MDESC_ARC_TYPE_BACK) {
640 u64 n = mdesc_arc_target(hp, j);
641 const char *n_name;
642
643 n_name = mdesc_node_name(hp, n);
644 if (strcmp(n_name, "cpu"))
645 continue;
646
647 id = mdesc_get_property(hp, n, "id", NULL);
648 if (*id < NR_CPUS)
649 cpu_data(*id).core_id = core_id;
650 }
651 }
652 }
653}
654
655static void __devinit set_core_ids(struct mdesc_handle *hp)
656{
657 int idx;
658 u64 mp;
659
660 idx = 1;
661 mdesc_for_each_node_by_name(hp, mp, "cache") {
662 const u64 *level;
663 const char *type;
664 int len;
665
666 level = mdesc_get_property(hp, mp, "level", NULL);
667 if (*level != 1)
668 continue;
669
670 type = mdesc_get_property(hp, mp, "type", &len);
671 if (!of_find_in_proplist(type, "instn", len))
672 continue;
673
674 mark_core_ids(hp, mp, idx);
675
676 idx++;
677 }
678}
679
680static void __devinit mark_proc_ids(struct mdesc_handle *hp, u64 mp,
681 int proc_id)
682{
683 u64 a;
684
685 mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) {
686 u64 t = mdesc_arc_target(hp, a);
687 const char *name;
688 const u64 *id;
689
690 name = mdesc_node_name(hp, t);
691 if (strcmp(name, "cpu"))
692 continue;
693
694 id = mdesc_get_property(hp, t, "id", NULL);
695 if (*id < NR_CPUS)
696 cpu_data(*id).proc_id = proc_id;
697 }
698}
699
700static void __devinit __set_proc_ids(struct mdesc_handle *hp,
701 const char *exec_unit_name)
702{
703 int idx;
704 u64 mp;
705
706 idx = 0;
707 mdesc_for_each_node_by_name(hp, mp, exec_unit_name) {
708 const char *type;
709 int len;
710
711 type = mdesc_get_property(hp, mp, "type", &len);
712 if (!of_find_in_proplist(type, "int", len) &&
713 !of_find_in_proplist(type, "integer", len))
714 continue;
715
716 mark_proc_ids(hp, mp, idx);
717
718 idx++;
719 }
720}
721
722static void __devinit set_proc_ids(struct mdesc_handle *hp)
723{
724 __set_proc_ids(hp, "exec_unit");
725 __set_proc_ids(hp, "exec-unit");
726}
727
728static void __devinit get_one_mondo_bits(const u64 *p, unsigned int *mask,
729 unsigned char def)
730{
731 u64 val;
732
733 if (!p)
734 goto use_default;
735 val = *p;
736
737 if (!val || val >= 64)
738 goto use_default;
739
740 *mask = ((1U << val) * 64U) - 1U;
741 return;
742
743use_default:
744 *mask = ((1U << def) * 64U) - 1U;
745}
746
747static void __devinit get_mondo_data(struct mdesc_handle *hp, u64 mp,
748 struct trap_per_cpu *tb)
749{
750 const u64 *val;
751
752 val = mdesc_get_property(hp, mp, "q-cpu-mondo-#bits", NULL);
753 get_one_mondo_bits(val, &tb->cpu_mondo_qmask, 7);
754
755 val = mdesc_get_property(hp, mp, "q-dev-mondo-#bits", NULL);
756 get_one_mondo_bits(val, &tb->dev_mondo_qmask, 7);
757
758 val = mdesc_get_property(hp, mp, "q-resumable-#bits", NULL);
759 get_one_mondo_bits(val, &tb->resum_qmask, 6);
760
761 val = mdesc_get_property(hp, mp, "q-nonresumable-#bits", NULL);
762 get_one_mondo_bits(val, &tb->nonresum_qmask, 2);
763}
764
765void __cpuinit mdesc_fill_in_cpu_data(cpumask_t mask)
766{
767 struct mdesc_handle *hp = mdesc_grab();
768 u64 mp;
769
770 ncpus_probed = 0;
771 mdesc_for_each_node_by_name(hp, mp, "cpu") {
772 const u64 *id = mdesc_get_property(hp, mp, "id", NULL);
773 const u64 *cfreq = mdesc_get_property(hp, mp, "clock-frequency", NULL);
774 struct trap_per_cpu *tb;
775 cpuinfo_sparc *c;
776 int cpuid;
777 u64 a;
778
779 ncpus_probed++;
780
781 cpuid = *id;
782
783#ifdef CONFIG_SMP
784 if (cpuid >= NR_CPUS) {
785 printk(KERN_WARNING "Ignoring CPU %d which is "
786 ">= NR_CPUS (%d)\n",
787 cpuid, NR_CPUS);
788 continue;
789 }
790 if (!cpu_isset(cpuid, mask))
791 continue;
792#else
793 /* On uniprocessor we only want the values for the
794 * real physical cpu the kernel booted onto, however
795 * cpu_data() only has one entry at index 0.
796 */
797 if (cpuid != real_hard_smp_processor_id())
798 continue;
799 cpuid = 0;
800#endif
801
802 c = &cpu_data(cpuid);
803 c->clock_tick = *cfreq;
804
805 tb = &trap_block[cpuid];
806 get_mondo_data(hp, mp, tb);
807
808 mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) {
809 u64 j, t = mdesc_arc_target(hp, a);
810 const char *t_name;
811
812 t_name = mdesc_node_name(hp, t);
813 if (!strcmp(t_name, "cache")) {
814 fill_in_one_cache(c, hp, t);
815 continue;
816 }
817
818 mdesc_for_each_arc(j, hp, t, MDESC_ARC_TYPE_FWD) {
819 u64 n = mdesc_arc_target(hp, j);
820 const char *n_name;
821
822 n_name = mdesc_node_name(hp, n);
823 if (!strcmp(n_name, "cache"))
824 fill_in_one_cache(c, hp, n);
825 }
826 }
827
828#ifdef CONFIG_SMP
829 cpu_set(cpuid, cpu_present_map);
830#endif
831
832 c->core_id = 0;
833 c->proc_id = -1;
834 }
835
836#ifdef CONFIG_SMP
837 sparc64_multi_core = 1;
838#endif
839
840 set_core_ids(hp);
841 set_proc_ids(hp);
842
843 smp_fill_in_sib_core_maps();
844
845 mdesc_release(hp);
846}
847
848static ssize_t mdesc_read(struct file *file, char __user *buf,
849 size_t len, loff_t *offp)
850{
851 struct mdesc_handle *hp = mdesc_grab();
852 int err;
853
854 if (!hp)
855 return -ENODEV;
856
857 err = hp->handle_size;
858 if (len < hp->handle_size)
859 err = -EMSGSIZE;
860 else if (copy_to_user(buf, &hp->mdesc, hp->handle_size))
861 err = -EFAULT;
862 mdesc_release(hp);
863
864 return err;
865}
866
867static const struct file_operations mdesc_fops = {
868 .read = mdesc_read,
869 .owner = THIS_MODULE,
870};
871
872static struct miscdevice mdesc_misc = {
873 .minor = MISC_DYNAMIC_MINOR,
874 .name = "mdesc",
875 .fops = &mdesc_fops,
876};
877
878static int __init mdesc_misc_init(void)
879{
880 return misc_register(&mdesc_misc);
881}
882
883__initcall(mdesc_misc_init);
884
885void __init sun4v_mdesc_init(void)
886{
887 struct mdesc_handle *hp;
888 unsigned long len, real_len, status;
889 cpumask_t mask;
890
891 (void) sun4v_mach_desc(0UL, 0UL, &len);
892
893 printk("MDESC: Size is %lu bytes.\n", len);
894
895 hp = mdesc_alloc(len, &lmb_mdesc_ops);
896 if (hp == NULL) {
897 prom_printf("MDESC: alloc of %lu bytes failed.\n", len);
898 prom_halt();
899 }
900
901 status = sun4v_mach_desc(__pa(&hp->mdesc), len, &real_len);
902 if (status != HV_EOK || real_len > len) {
903 prom_printf("sun4v_mach_desc fails, err(%lu), "
904 "len(%lu), real_len(%lu)\n",
905 status, len, real_len);
906 mdesc_free(hp);
907 prom_halt();
908 }
909
910 cur_mdesc = hp;
911
912 report_platform_properties();
913
914 cpus_setall(mask);
915 mdesc_fill_in_cpu_data(mask);
916}
diff --git a/arch/sparc/kernel/misctrap.S b/arch/sparc/kernel/misctrap.S
new file mode 100644
index 000000000000..753b4f031bfb
--- /dev/null
+++ b/arch/sparc/kernel/misctrap.S
@@ -0,0 +1,97 @@
1#ifdef CONFIG_KGDB
2 .globl arch_kgdb_breakpoint
3 .type arch_kgdb_breakpoint,#function
4arch_kgdb_breakpoint:
5 ta 0x72
6 retl
7 nop
8 .size arch_kgdb_breakpoint,.-arch_kgdb_breakpoint
9#endif
10
11 .type __do_privact,#function
12__do_privact:
13 mov TLB_SFSR, %g3
14 stxa %g0, [%g3] ASI_DMMU ! Clear FaultValid bit
15 membar #Sync
16 sethi %hi(109f), %g7
17 ba,pt %xcc, etrap
18109: or %g7, %lo(109b), %g7
19 call do_privact
20 add %sp, PTREGS_OFF, %o0
21 ba,pt %xcc, rtrap
22 nop
23 .size __do_privact,.-__do_privact
24
25 .type do_mna,#function
26do_mna:
27 rdpr %tl, %g3
28 cmp %g3, 1
29
30 /* Setup %g4/%g5 now as they are used in the
31 * winfixup code.
32 */
33 mov TLB_SFSR, %g3
34 mov DMMU_SFAR, %g4
35 ldxa [%g4] ASI_DMMU, %g4
36 ldxa [%g3] ASI_DMMU, %g5
37 stxa %g0, [%g3] ASI_DMMU ! Clear FaultValid bit
38 membar #Sync
39 bgu,pn %icc, winfix_mna
40 rdpr %tpc, %g3
41
421: sethi %hi(109f), %g7
43 ba,pt %xcc, etrap
44109: or %g7, %lo(109b), %g7
45 mov %l4, %o1
46 mov %l5, %o2
47 call mem_address_unaligned
48 add %sp, PTREGS_OFF, %o0
49 ba,pt %xcc, rtrap
50 nop
51 .size do_mna,.-do_mna
52
53 .type do_lddfmna,#function
54do_lddfmna:
55 sethi %hi(109f), %g7
56 mov TLB_SFSR, %g4
57 ldxa [%g4] ASI_DMMU, %g5
58 stxa %g0, [%g4] ASI_DMMU ! Clear FaultValid bit
59 membar #Sync
60 mov DMMU_SFAR, %g4
61 ldxa [%g4] ASI_DMMU, %g4
62 ba,pt %xcc, etrap
63109: or %g7, %lo(109b), %g7
64 mov %l4, %o1
65 mov %l5, %o2
66 call handle_lddfmna
67 add %sp, PTREGS_OFF, %o0
68 ba,pt %xcc, rtrap
69 nop
70 .size do_lddfmna,.-do_lddfmna
71
72 .type do_stdfmna,#function
73do_stdfmna:
74 sethi %hi(109f), %g7
75 mov TLB_SFSR, %g4
76 ldxa [%g4] ASI_DMMU, %g5
77 stxa %g0, [%g4] ASI_DMMU ! Clear FaultValid bit
78 membar #Sync
79 mov DMMU_SFAR, %g4
80 ldxa [%g4] ASI_DMMU, %g4
81 ba,pt %xcc, etrap
82109: or %g7, %lo(109b), %g7
83 mov %l4, %o1
84 mov %l5, %o2
85 call handle_stdfmna
86 add %sp, PTREGS_OFF, %o0
87 ba,pt %xcc, rtrap
88 nop
89 .size do_stdfmna,.-do_stdfmna
90
91 .type breakpoint_trap,#function
92breakpoint_trap:
93 call sparc_breakpoint
94 add %sp, PTREGS_OFF, %o0
95 ba,pt %xcc, rtrap
96 nop
97 .size breakpoint_trap,.-breakpoint_trap
diff --git a/arch/sparc/kernel/module_64.c b/arch/sparc/kernel/module_64.c
new file mode 100644
index 000000000000..158484bf5999
--- /dev/null
+++ b/arch/sparc/kernel/module_64.c
@@ -0,0 +1,213 @@
1/* Kernel module help for sparc64.
2 *
3 * Copyright (C) 2001 Rusty Russell.
4 * Copyright (C) 2002 David S. Miller.
5 */
6
7#include <linux/moduleloader.h>
8#include <linux/kernel.h>
9#include <linux/elf.h>
10#include <linux/vmalloc.h>
11#include <linux/fs.h>
12#include <linux/string.h>
13#include <linux/slab.h>
14#include <linux/mm.h>
15
16#include <asm/processor.h>
17#include <asm/spitfire.h>
18
19static void *module_map(unsigned long size)
20{
21 struct vm_struct *area;
22
23 size = PAGE_ALIGN(size);
24 if (!size || size > MODULES_LEN)
25 return NULL;
26
27 area = __get_vm_area(size, VM_ALLOC, MODULES_VADDR, MODULES_END);
28 if (!area)
29 return NULL;
30
31 return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL);
32}
33
34void *module_alloc(unsigned long size)
35{
36 void *ret;
37
38 /* We handle the zero case fine, unlike vmalloc */
39 if (size == 0)
40 return NULL;
41
42 ret = module_map(size);
43 if (!ret)
44 ret = ERR_PTR(-ENOMEM);
45 else
46 memset(ret, 0, size);
47
48 return ret;
49}
50
51/* Free memory returned from module_core_alloc/module_init_alloc */
52void module_free(struct module *mod, void *module_region)
53{
54 vfree(module_region);
55 /* FIXME: If module_region == mod->init_region, trim exception
56 table entries. */
57}
58
59/* Make generic code ignore STT_REGISTER dummy undefined symbols. */
60int module_frob_arch_sections(Elf_Ehdr *hdr,
61 Elf_Shdr *sechdrs,
62 char *secstrings,
63 struct module *mod)
64{
65 unsigned int symidx;
66 Elf64_Sym *sym;
67 const char *strtab;
68 int i;
69
70 for (symidx = 0; sechdrs[symidx].sh_type != SHT_SYMTAB; symidx++) {
71 if (symidx == hdr->e_shnum-1) {
72 printk("%s: no symtab found.\n", mod->name);
73 return -ENOEXEC;
74 }
75 }
76 sym = (Elf64_Sym *)sechdrs[symidx].sh_addr;
77 strtab = (char *)sechdrs[sechdrs[symidx].sh_link].sh_addr;
78
79 for (i = 1; i < sechdrs[symidx].sh_size / sizeof(Elf_Sym); i++) {
80 if (sym[i].st_shndx == SHN_UNDEF &&
81 ELF64_ST_TYPE(sym[i].st_info) == STT_REGISTER)
82 sym[i].st_shndx = SHN_ABS;
83 }
84 return 0;
85}
86
87int apply_relocate(Elf64_Shdr *sechdrs,
88 const char *strtab,
89 unsigned int symindex,
90 unsigned int relsec,
91 struct module *me)
92{
93 printk(KERN_ERR "module %s: non-ADD RELOCATION unsupported\n",
94 me->name);
95 return -ENOEXEC;
96}
97
98int apply_relocate_add(Elf64_Shdr *sechdrs,
99 const char *strtab,
100 unsigned int symindex,
101 unsigned int relsec,
102 struct module *me)
103{
104 unsigned int i;
105 Elf64_Rela *rel = (void *)sechdrs[relsec].sh_addr;
106 Elf64_Sym *sym;
107 u8 *location;
108 u32 *loc32;
109
110 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
111 Elf64_Addr v;
112
113 /* This is where to make the change */
114 location = (u8 *)sechdrs[sechdrs[relsec].sh_info].sh_addr
115 + rel[i].r_offset;
116 loc32 = (u32 *) location;
117
118 BUG_ON(((u64)location >> (u64)32) != (u64)0);
119
120 /* This is the symbol it is referring to. Note that all
121 undefined symbols have been resolved. */
122 sym = (Elf64_Sym *)sechdrs[symindex].sh_addr
123 + ELF64_R_SYM(rel[i].r_info);
124 v = sym->st_value + rel[i].r_addend;
125
126 switch (ELF64_R_TYPE(rel[i].r_info) & 0xff) {
127 case R_SPARC_64:
128 location[0] = v >> 56;
129 location[1] = v >> 48;
130 location[2] = v >> 40;
131 location[3] = v >> 32;
132 location[4] = v >> 24;
133 location[5] = v >> 16;
134 location[6] = v >> 8;
135 location[7] = v >> 0;
136 break;
137
138 case R_SPARC_32:
139 location[0] = v >> 24;
140 location[1] = v >> 16;
141 location[2] = v >> 8;
142 location[3] = v >> 0;
143 break;
144
145 case R_SPARC_DISP32:
146 v -= (Elf64_Addr) location;
147 *loc32 = v;
148 break;
149
150 case R_SPARC_WDISP30:
151 v -= (Elf64_Addr) location;
152 *loc32 = (*loc32 & ~0x3fffffff) |
153 ((v >> 2) & 0x3fffffff);
154 break;
155
156 case R_SPARC_WDISP22:
157 v -= (Elf64_Addr) location;
158 *loc32 = (*loc32 & ~0x3fffff) |
159 ((v >> 2) & 0x3fffff);
160 break;
161
162 case R_SPARC_WDISP19:
163 v -= (Elf64_Addr) location;
164 *loc32 = (*loc32 & ~0x7ffff) |
165 ((v >> 2) & 0x7ffff);
166 break;
167
168 case R_SPARC_LO10:
169 *loc32 = (*loc32 & ~0x3ff) | (v & 0x3ff);
170 break;
171
172 case R_SPARC_HI22:
173 *loc32 = (*loc32 & ~0x3fffff) |
174 ((v >> 10) & 0x3fffff);
175 break;
176
177 case R_SPARC_OLO10:
178 *loc32 = (*loc32 & ~0x1fff) |
179 (((v & 0x3ff) +
180 (ELF64_R_TYPE(rel[i].r_info) >> 8))
181 & 0x1fff);
182 break;
183
184 default:
185 printk(KERN_ERR "module %s: Unknown relocation: %x\n",
186 me->name,
187 (int) (ELF64_R_TYPE(rel[i].r_info) & 0xff));
188 return -ENOEXEC;
189 };
190 }
191 return 0;
192}
193
194int module_finalize(const Elf_Ehdr *hdr,
195 const Elf_Shdr *sechdrs,
196 struct module *me)
197{
198 /* Cheetah's I-cache is fully coherent. */
199 if (tlb_type == spitfire) {
200 unsigned long va;
201
202 flushw_all();
203 for (va = 0; va < (PAGE_SIZE << 1); va += 32)
204 spitfire_put_icache_tag(va, 0x0);
205 __asm__ __volatile__("flush %g6");
206 }
207
208 return 0;
209}
210
211void module_arch_cleanup(struct module *mod)
212{
213}
diff --git a/arch/sparc/kernel/of_device_64.c b/arch/sparc/kernel/of_device_64.c
new file mode 100644
index 000000000000..0f616ae3246c
--- /dev/null
+++ b/arch/sparc/kernel/of_device_64.c
@@ -0,0 +1,898 @@
1#include <linux/string.h>
2#include <linux/kernel.h>
3#include <linux/of.h>
4#include <linux/init.h>
5#include <linux/module.h>
6#include <linux/mod_devicetable.h>
7#include <linux/slab.h>
8#include <linux/errno.h>
9#include <linux/irq.h>
10#include <linux/of_device.h>
11#include <linux/of_platform.h>
12
13void __iomem *of_ioremap(struct resource *res, unsigned long offset, unsigned long size, char *name)
14{
15 unsigned long ret = res->start + offset;
16 struct resource *r;
17
18 if (res->flags & IORESOURCE_MEM)
19 r = request_mem_region(ret, size, name);
20 else
21 r = request_region(ret, size, name);
22 if (!r)
23 ret = 0;
24
25 return (void __iomem *) ret;
26}
27EXPORT_SYMBOL(of_ioremap);
28
29void of_iounmap(struct resource *res, void __iomem *base, unsigned long size)
30{
31 if (res->flags & IORESOURCE_MEM)
32 release_mem_region((unsigned long) base, size);
33 else
34 release_region((unsigned long) base, size);
35}
36EXPORT_SYMBOL(of_iounmap);
37
38static int node_match(struct device *dev, void *data)
39{
40 struct of_device *op = to_of_device(dev);
41 struct device_node *dp = data;
42
43 return (op->node == dp);
44}
45
46struct of_device *of_find_device_by_node(struct device_node *dp)
47{
48 struct device *dev = bus_find_device(&of_platform_bus_type, NULL,
49 dp, node_match);
50
51 if (dev)
52 return to_of_device(dev);
53
54 return NULL;
55}
56EXPORT_SYMBOL(of_find_device_by_node);
57
58unsigned int irq_of_parse_and_map(struct device_node *node, int index)
59{
60 struct of_device *op = of_find_device_by_node(node);
61
62 if (!op || index >= op->num_irqs)
63 return 0;
64
65 return op->irqs[index];
66}
67EXPORT_SYMBOL(irq_of_parse_and_map);
68
69/* Take the archdata values for IOMMU, STC, and HOSTDATA found in
70 * BUS and propagate to all child of_device objects.
71 */
72void of_propagate_archdata(struct of_device *bus)
73{
74 struct dev_archdata *bus_sd = &bus->dev.archdata;
75 struct device_node *bus_dp = bus->node;
76 struct device_node *dp;
77
78 for (dp = bus_dp->child; dp; dp = dp->sibling) {
79 struct of_device *op = of_find_device_by_node(dp);
80
81 op->dev.archdata.iommu = bus_sd->iommu;
82 op->dev.archdata.stc = bus_sd->stc;
83 op->dev.archdata.host_controller = bus_sd->host_controller;
84 op->dev.archdata.numa_node = bus_sd->numa_node;
85
86 if (dp->child)
87 of_propagate_archdata(op);
88 }
89}
90
91struct bus_type of_platform_bus_type;
92EXPORT_SYMBOL(of_platform_bus_type);
93
94static inline u64 of_read_addr(const u32 *cell, int size)
95{
96 u64 r = 0;
97 while (size--)
98 r = (r << 32) | *(cell++);
99 return r;
100}
101
102static void __init get_cells(struct device_node *dp,
103 int *addrc, int *sizec)
104{
105 if (addrc)
106 *addrc = of_n_addr_cells(dp);
107 if (sizec)
108 *sizec = of_n_size_cells(dp);
109}
110
111/* Max address size we deal with */
112#define OF_MAX_ADDR_CELLS 4
113
114struct of_bus {
115 const char *name;
116 const char *addr_prop_name;
117 int (*match)(struct device_node *parent);
118 void (*count_cells)(struct device_node *child,
119 int *addrc, int *sizec);
120 int (*map)(u32 *addr, const u32 *range,
121 int na, int ns, int pna);
122 unsigned long (*get_flags)(const u32 *addr, unsigned long);
123};
124
125/*
126 * Default translator (generic bus)
127 */
128
129static void of_bus_default_count_cells(struct device_node *dev,
130 int *addrc, int *sizec)
131{
132 get_cells(dev, addrc, sizec);
133}
134
135/* Make sure the least significant 64-bits are in-range. Even
136 * for 3 or 4 cell values it is a good enough approximation.
137 */
138static int of_out_of_range(const u32 *addr, const u32 *base,
139 const u32 *size, int na, int ns)
140{
141 u64 a = of_read_addr(addr, na);
142 u64 b = of_read_addr(base, na);
143
144 if (a < b)
145 return 1;
146
147 b += of_read_addr(size, ns);
148 if (a >= b)
149 return 1;
150
151 return 0;
152}
153
154static int of_bus_default_map(u32 *addr, const u32 *range,
155 int na, int ns, int pna)
156{
157 u32 result[OF_MAX_ADDR_CELLS];
158 int i;
159
160 if (ns > 2) {
161 printk("of_device: Cannot handle size cells (%d) > 2.", ns);
162 return -EINVAL;
163 }
164
165 if (of_out_of_range(addr, range, range + na + pna, na, ns))
166 return -EINVAL;
167
168 /* Start with the parent range base. */
169 memcpy(result, range + na, pna * 4);
170
171 /* Add in the child address offset. */
172 for (i = 0; i < na; i++)
173 result[pna - 1 - i] +=
174 (addr[na - 1 - i] -
175 range[na - 1 - i]);
176
177 memcpy(addr, result, pna * 4);
178
179 return 0;
180}
181
182static unsigned long of_bus_default_get_flags(const u32 *addr, unsigned long flags)
183{
184 if (flags)
185 return flags;
186 return IORESOURCE_MEM;
187}
188
189/*
190 * PCI bus specific translator
191 */
192
193static int of_bus_pci_match(struct device_node *np)
194{
195 if (!strcmp(np->name, "pci")) {
196 const char *model = of_get_property(np, "model", NULL);
197
198 if (model && !strcmp(model, "SUNW,simba"))
199 return 0;
200
201 /* Do not do PCI specific frobbing if the
202 * PCI bridge lacks a ranges property. We
203 * want to pass it through up to the next
204 * parent as-is, not with the PCI translate
205 * method which chops off the top address cell.
206 */
207 if (!of_find_property(np, "ranges", NULL))
208 return 0;
209
210 return 1;
211 }
212
213 return 0;
214}
215
216static int of_bus_simba_match(struct device_node *np)
217{
218 const char *model = of_get_property(np, "model", NULL);
219
220 if (model && !strcmp(model, "SUNW,simba"))
221 return 1;
222
223 /* Treat PCI busses lacking ranges property just like
224 * simba.
225 */
226 if (!strcmp(np->name, "pci")) {
227 if (!of_find_property(np, "ranges", NULL))
228 return 1;
229 }
230
231 return 0;
232}
233
234static int of_bus_simba_map(u32 *addr, const u32 *range,
235 int na, int ns, int pna)
236{
237 return 0;
238}
239
240static void of_bus_pci_count_cells(struct device_node *np,
241 int *addrc, int *sizec)
242{
243 if (addrc)
244 *addrc = 3;
245 if (sizec)
246 *sizec = 2;
247}
248
249static int of_bus_pci_map(u32 *addr, const u32 *range,
250 int na, int ns, int pna)
251{
252 u32 result[OF_MAX_ADDR_CELLS];
253 int i;
254
255 /* Check address type match */
256 if ((addr[0] ^ range[0]) & 0x03000000)
257 return -EINVAL;
258
259 if (of_out_of_range(addr + 1, range + 1, range + na + pna,
260 na - 1, ns))
261 return -EINVAL;
262
263 /* Start with the parent range base. */
264 memcpy(result, range + na, pna * 4);
265
266 /* Add in the child address offset, skipping high cell. */
267 for (i = 0; i < na - 1; i++)
268 result[pna - 1 - i] +=
269 (addr[na - 1 - i] -
270 range[na - 1 - i]);
271
272 memcpy(addr, result, pna * 4);
273
274 return 0;
275}
276
277static unsigned long of_bus_pci_get_flags(const u32 *addr, unsigned long flags)
278{
279 u32 w = addr[0];
280
281 /* For PCI, we override whatever child busses may have used. */
282 flags = 0;
283 switch((w >> 24) & 0x03) {
284 case 0x01:
285 flags |= IORESOURCE_IO;
286 break;
287
288 case 0x02: /* 32 bits */
289 case 0x03: /* 64 bits */
290 flags |= IORESOURCE_MEM;
291 break;
292 }
293 if (w & 0x40000000)
294 flags |= IORESOURCE_PREFETCH;
295 return flags;
296}
297
298/*
299 * SBUS bus specific translator
300 */
301
302static int of_bus_sbus_match(struct device_node *np)
303{
304 return !strcmp(np->name, "sbus") ||
305 !strcmp(np->name, "sbi");
306}
307
308static void of_bus_sbus_count_cells(struct device_node *child,
309 int *addrc, int *sizec)
310{
311 if (addrc)
312 *addrc = 2;
313 if (sizec)
314 *sizec = 1;
315}
316
317/*
318 * FHC/Central bus specific translator.
319 *
320 * This is just needed to hard-code the address and size cell
321 * counts. 'fhc' and 'central' nodes lack the #address-cells and
322 * #size-cells properties, and if you walk to the root on such
323 * Enterprise boxes all you'll get is a #size-cells of 2 which is
324 * not what we want to use.
325 */
326static int of_bus_fhc_match(struct device_node *np)
327{
328 return !strcmp(np->name, "fhc") ||
329 !strcmp(np->name, "central");
330}
331
332#define of_bus_fhc_count_cells of_bus_sbus_count_cells
333
334/*
335 * Array of bus specific translators
336 */
337
338static struct of_bus of_busses[] = {
339 /* PCI */
340 {
341 .name = "pci",
342 .addr_prop_name = "assigned-addresses",
343 .match = of_bus_pci_match,
344 .count_cells = of_bus_pci_count_cells,
345 .map = of_bus_pci_map,
346 .get_flags = of_bus_pci_get_flags,
347 },
348 /* SIMBA */
349 {
350 .name = "simba",
351 .addr_prop_name = "assigned-addresses",
352 .match = of_bus_simba_match,
353 .count_cells = of_bus_pci_count_cells,
354 .map = of_bus_simba_map,
355 .get_flags = of_bus_pci_get_flags,
356 },
357 /* SBUS */
358 {
359 .name = "sbus",
360 .addr_prop_name = "reg",
361 .match = of_bus_sbus_match,
362 .count_cells = of_bus_sbus_count_cells,
363 .map = of_bus_default_map,
364 .get_flags = of_bus_default_get_flags,
365 },
366 /* FHC */
367 {
368 .name = "fhc",
369 .addr_prop_name = "reg",
370 .match = of_bus_fhc_match,
371 .count_cells = of_bus_fhc_count_cells,
372 .map = of_bus_default_map,
373 .get_flags = of_bus_default_get_flags,
374 },
375 /* Default */
376 {
377 .name = "default",
378 .addr_prop_name = "reg",
379 .match = NULL,
380 .count_cells = of_bus_default_count_cells,
381 .map = of_bus_default_map,
382 .get_flags = of_bus_default_get_flags,
383 },
384};
385
386static struct of_bus *of_match_bus(struct device_node *np)
387{
388 int i;
389
390 for (i = 0; i < ARRAY_SIZE(of_busses); i ++)
391 if (!of_busses[i].match || of_busses[i].match(np))
392 return &of_busses[i];
393 BUG();
394 return NULL;
395}
396
397static int __init build_one_resource(struct device_node *parent,
398 struct of_bus *bus,
399 struct of_bus *pbus,
400 u32 *addr,
401 int na, int ns, int pna)
402{
403 const u32 *ranges;
404 int rone, rlen;
405
406 ranges = of_get_property(parent, "ranges", &rlen);
407 if (ranges == NULL || rlen == 0) {
408 u32 result[OF_MAX_ADDR_CELLS];
409 int i;
410
411 memset(result, 0, pna * 4);
412 for (i = 0; i < na; i++)
413 result[pna - 1 - i] =
414 addr[na - 1 - i];
415
416 memcpy(addr, result, pna * 4);
417 return 0;
418 }
419
420 /* Now walk through the ranges */
421 rlen /= 4;
422 rone = na + pna + ns;
423 for (; rlen >= rone; rlen -= rone, ranges += rone) {
424 if (!bus->map(addr, ranges, na, ns, pna))
425 return 0;
426 }
427
428 /* When we miss an I/O space match on PCI, just pass it up
429 * to the next PCI bridge and/or controller.
430 */
431 if (!strcmp(bus->name, "pci") &&
432 (addr[0] & 0x03000000) == 0x01000000)
433 return 0;
434
435 return 1;
436}
437
438static int __init use_1to1_mapping(struct device_node *pp)
439{
440 /* If we have a ranges property in the parent, use it. */
441 if (of_find_property(pp, "ranges", NULL) != NULL)
442 return 0;
443
444 /* If the parent is the dma node of an ISA bus, pass
445 * the translation up to the root.
446 *
447 * Some SBUS devices use intermediate nodes to express
448 * hierarchy within the device itself. These aren't
449 * real bus nodes, and don't have a 'ranges' property.
450 * But, we should still pass the translation work up
451 * to the SBUS itself.
452 */
453 if (!strcmp(pp->name, "dma") ||
454 !strcmp(pp->name, "espdma") ||
455 !strcmp(pp->name, "ledma") ||
456 !strcmp(pp->name, "lebuffer"))
457 return 0;
458
459 /* Similarly for all PCI bridges, if we get this far
460 * it lacks a ranges property, and this will include
461 * cases like Simba.
462 */
463 if (!strcmp(pp->name, "pci"))
464 return 0;
465
466 return 1;
467}
468
469static int of_resource_verbose;
470
471static void __init build_device_resources(struct of_device *op,
472 struct device *parent)
473{
474 struct of_device *p_op;
475 struct of_bus *bus;
476 int na, ns;
477 int index, num_reg;
478 const void *preg;
479
480 if (!parent)
481 return;
482
483 p_op = to_of_device(parent);
484 bus = of_match_bus(p_op->node);
485 bus->count_cells(op->node, &na, &ns);
486
487 preg = of_get_property(op->node, bus->addr_prop_name, &num_reg);
488 if (!preg || num_reg == 0)
489 return;
490
491 /* Convert to num-cells. */
492 num_reg /= 4;
493
494 /* Convert to num-entries. */
495 num_reg /= na + ns;
496
497 /* Prevent overrunning the op->resources[] array. */
498 if (num_reg > PROMREG_MAX) {
499 printk(KERN_WARNING "%s: Too many regs (%d), "
500 "limiting to %d.\n",
501 op->node->full_name, num_reg, PROMREG_MAX);
502 num_reg = PROMREG_MAX;
503 }
504
505 for (index = 0; index < num_reg; index++) {
506 struct resource *r = &op->resource[index];
507 u32 addr[OF_MAX_ADDR_CELLS];
508 const u32 *reg = (preg + (index * ((na + ns) * 4)));
509 struct device_node *dp = op->node;
510 struct device_node *pp = p_op->node;
511 struct of_bus *pbus, *dbus;
512 u64 size, result = OF_BAD_ADDR;
513 unsigned long flags;
514 int dna, dns;
515 int pna, pns;
516
517 size = of_read_addr(reg + na, ns);
518 memcpy(addr, reg, na * 4);
519
520 flags = bus->get_flags(addr, 0);
521
522 if (use_1to1_mapping(pp)) {
523 result = of_read_addr(addr, na);
524 goto build_res;
525 }
526
527 dna = na;
528 dns = ns;
529 dbus = bus;
530
531 while (1) {
532 dp = pp;
533 pp = dp->parent;
534 if (!pp) {
535 result = of_read_addr(addr, dna);
536 break;
537 }
538
539 pbus = of_match_bus(pp);
540 pbus->count_cells(dp, &pna, &pns);
541
542 if (build_one_resource(dp, dbus, pbus, addr,
543 dna, dns, pna))
544 break;
545
546 flags = pbus->get_flags(addr, flags);
547
548 dna = pna;
549 dns = pns;
550 dbus = pbus;
551 }
552
553 build_res:
554 memset(r, 0, sizeof(*r));
555
556 if (of_resource_verbose)
557 printk("%s reg[%d] -> %lx\n",
558 op->node->full_name, index,
559 result);
560
561 if (result != OF_BAD_ADDR) {
562 if (tlb_type == hypervisor)
563 result &= 0x0fffffffffffffffUL;
564
565 r->start = result;
566 r->end = result + size - 1;
567 r->flags = flags;
568 }
569 r->name = op->node->name;
570 }
571}
572
573static struct device_node * __init
574apply_interrupt_map(struct device_node *dp, struct device_node *pp,
575 const u32 *imap, int imlen, const u32 *imask,
576 unsigned int *irq_p)
577{
578 struct device_node *cp;
579 unsigned int irq = *irq_p;
580 struct of_bus *bus;
581 phandle handle;
582 const u32 *reg;
583 int na, num_reg, i;
584
585 bus = of_match_bus(pp);
586 bus->count_cells(dp, &na, NULL);
587
588 reg = of_get_property(dp, "reg", &num_reg);
589 if (!reg || !num_reg)
590 return NULL;
591
592 imlen /= ((na + 3) * 4);
593 handle = 0;
594 for (i = 0; i < imlen; i++) {
595 int j;
596
597 for (j = 0; j < na; j++) {
598 if ((reg[j] & imask[j]) != imap[j])
599 goto next;
600 }
601 if (imap[na] == irq) {
602 handle = imap[na + 1];
603 irq = imap[na + 2];
604 break;
605 }
606
607 next:
608 imap += (na + 3);
609 }
610 if (i == imlen) {
611 /* Psycho and Sabre PCI controllers can have 'interrupt-map'
612 * properties that do not include the on-board device
613 * interrupts. Instead, the device's 'interrupts' property
614 * is already a fully specified INO value.
615 *
616 * Handle this by deciding that, if we didn't get a
617 * match in the parent's 'interrupt-map', and the
618 * parent is an IRQ translater, then use the parent as
619 * our IRQ controller.
620 */
621 if (pp->irq_trans)
622 return pp;
623
624 return NULL;
625 }
626
627 *irq_p = irq;
628 cp = of_find_node_by_phandle(handle);
629
630 return cp;
631}
632
633static unsigned int __init pci_irq_swizzle(struct device_node *dp,
634 struct device_node *pp,
635 unsigned int irq)
636{
637 const struct linux_prom_pci_registers *regs;
638 unsigned int bus, devfn, slot, ret;
639
640 if (irq < 1 || irq > 4)
641 return irq;
642
643 regs = of_get_property(dp, "reg", NULL);
644 if (!regs)
645 return irq;
646
647 bus = (regs->phys_hi >> 16) & 0xff;
648 devfn = (regs->phys_hi >> 8) & 0xff;
649 slot = (devfn >> 3) & 0x1f;
650
651 if (pp->irq_trans) {
652 /* Derived from Table 8-3, U2P User's Manual. This branch
653 * is handling a PCI controller that lacks a proper set of
654 * interrupt-map and interrupt-map-mask properties. The
655 * Ultra-E450 is one example.
656 *
657 * The bit layout is BSSLL, where:
658 * B: 0 on bus A, 1 on bus B
659 * D: 2-bit slot number, derived from PCI device number as
660 * (dev - 1) for bus A, or (dev - 2) for bus B
661 * L: 2-bit line number
662 */
663 if (bus & 0x80) {
664 /* PBM-A */
665 bus = 0x00;
666 slot = (slot - 1) << 2;
667 } else {
668 /* PBM-B */
669 bus = 0x10;
670 slot = (slot - 2) << 2;
671 }
672 irq -= 1;
673
674 ret = (bus | slot | irq);
675 } else {
676 /* Going through a PCI-PCI bridge that lacks a set of
677 * interrupt-map and interrupt-map-mask properties.
678 */
679 ret = ((irq - 1 + (slot & 3)) & 3) + 1;
680 }
681
682 return ret;
683}
684
685static int of_irq_verbose;
686
687static unsigned int __init build_one_device_irq(struct of_device *op,
688 struct device *parent,
689 unsigned int irq)
690{
691 struct device_node *dp = op->node;
692 struct device_node *pp, *ip;
693 unsigned int orig_irq = irq;
694 int nid;
695
696 if (irq == 0xffffffff)
697 return irq;
698
699 if (dp->irq_trans) {
700 irq = dp->irq_trans->irq_build(dp, irq,
701 dp->irq_trans->data);
702
703 if (of_irq_verbose)
704 printk("%s: direct translate %x --> %x\n",
705 dp->full_name, orig_irq, irq);
706
707 goto out;
708 }
709
710 /* Something more complicated. Walk up to the root, applying
711 * interrupt-map or bus specific translations, until we hit
712 * an IRQ translator.
713 *
714 * If we hit a bus type or situation we cannot handle, we
715 * stop and assume that the original IRQ number was in a
716 * format which has special meaning to it's immediate parent.
717 */
718 pp = dp->parent;
719 ip = NULL;
720 while (pp) {
721 const void *imap, *imsk;
722 int imlen;
723
724 imap = of_get_property(pp, "interrupt-map", &imlen);
725 imsk = of_get_property(pp, "interrupt-map-mask", NULL);
726 if (imap && imsk) {
727 struct device_node *iret;
728 int this_orig_irq = irq;
729
730 iret = apply_interrupt_map(dp, pp,
731 imap, imlen, imsk,
732 &irq);
733
734 if (of_irq_verbose)
735 printk("%s: Apply [%s:%x] imap --> [%s:%x]\n",
736 op->node->full_name,
737 pp->full_name, this_orig_irq,
738 (iret ? iret->full_name : "NULL"), irq);
739
740 if (!iret)
741 break;
742
743 if (iret->irq_trans) {
744 ip = iret;
745 break;
746 }
747 } else {
748 if (!strcmp(pp->name, "pci")) {
749 unsigned int this_orig_irq = irq;
750
751 irq = pci_irq_swizzle(dp, pp, irq);
752 if (of_irq_verbose)
753 printk("%s: PCI swizzle [%s] "
754 "%x --> %x\n",
755 op->node->full_name,
756 pp->full_name, this_orig_irq,
757 irq);
758
759 }
760
761 if (pp->irq_trans) {
762 ip = pp;
763 break;
764 }
765 }
766 dp = pp;
767 pp = pp->parent;
768 }
769 if (!ip)
770 return orig_irq;
771
772 irq = ip->irq_trans->irq_build(op->node, irq,
773 ip->irq_trans->data);
774 if (of_irq_verbose)
775 printk("%s: Apply IRQ trans [%s] %x --> %x\n",
776 op->node->full_name, ip->full_name, orig_irq, irq);
777
778out:
779 nid = of_node_to_nid(dp);
780 if (nid != -1) {
781 cpumask_t numa_mask = node_to_cpumask(nid);
782
783 irq_set_affinity(irq, numa_mask);
784 }
785
786 return irq;
787}
788
789static struct of_device * __init scan_one_device(struct device_node *dp,
790 struct device *parent)
791{
792 struct of_device *op = kzalloc(sizeof(*op), GFP_KERNEL);
793 const unsigned int *irq;
794 struct dev_archdata *sd;
795 int len, i;
796
797 if (!op)
798 return NULL;
799
800 sd = &op->dev.archdata;
801 sd->prom_node = dp;
802 sd->op = op;
803
804 op->node = dp;
805
806 op->clock_freq = of_getintprop_default(dp, "clock-frequency",
807 (25*1000*1000));
808 op->portid = of_getintprop_default(dp, "upa-portid", -1);
809 if (op->portid == -1)
810 op->portid = of_getintprop_default(dp, "portid", -1);
811
812 irq = of_get_property(dp, "interrupts", &len);
813 if (irq) {
814 memcpy(op->irqs, irq, len);
815 op->num_irqs = len / 4;
816 } else {
817 op->num_irqs = 0;
818 }
819
820 /* Prevent overrunning the op->irqs[] array. */
821 if (op->num_irqs > PROMINTR_MAX) {
822 printk(KERN_WARNING "%s: Too many irqs (%d), "
823 "limiting to %d.\n",
824 dp->full_name, op->num_irqs, PROMINTR_MAX);
825 op->num_irqs = PROMINTR_MAX;
826 }
827
828 build_device_resources(op, parent);
829 for (i = 0; i < op->num_irqs; i++)
830 op->irqs[i] = build_one_device_irq(op, parent, op->irqs[i]);
831
832 op->dev.parent = parent;
833 op->dev.bus = &of_platform_bus_type;
834 if (!parent)
835 dev_set_name(&op->dev, "root");
836 else
837 dev_set_name(&op->dev, "%08x", dp->node);
838
839 if (of_device_register(op)) {
840 printk("%s: Could not register of device.\n",
841 dp->full_name);
842 kfree(op);
843 op = NULL;
844 }
845
846 return op;
847}
848
849static void __init scan_tree(struct device_node *dp, struct device *parent)
850{
851 while (dp) {
852 struct of_device *op = scan_one_device(dp, parent);
853
854 if (op)
855 scan_tree(dp->child, &op->dev);
856
857 dp = dp->sibling;
858 }
859}
860
861static void __init scan_of_devices(void)
862{
863 struct device_node *root = of_find_node_by_path("/");
864 struct of_device *parent;
865
866 parent = scan_one_device(root, NULL);
867 if (!parent)
868 return;
869
870 scan_tree(root->child, &parent->dev);
871}
872
873static int __init of_bus_driver_init(void)
874{
875 int err;
876
877 err = of_bus_type_init(&of_platform_bus_type, "of");
878 if (!err)
879 scan_of_devices();
880
881 return err;
882}
883
884postcore_initcall(of_bus_driver_init);
885
886static int __init of_debug(char *str)
887{
888 int val = 0;
889
890 get_option(&str, &val);
891 if (val & 1)
892 of_resource_verbose = 1;
893 if (val & 2)
894 of_irq_verbose = 1;
895 return 1;
896}
897
898__setup("of_debug=", of_debug);
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
new file mode 100644
index 000000000000..bdb7c0a6d83d
--- /dev/null
+++ b/arch/sparc/kernel/pci.c
@@ -0,0 +1,1095 @@
1/* pci.c: UltraSparc PCI controller support.
2 *
3 * Copyright (C) 1997, 1998, 1999 David S. Miller (davem@redhat.com)
4 * Copyright (C) 1998, 1999 Eddie C. Dost (ecd@skynet.be)
5 * Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz)
6 *
7 * OF tree based PCI bus probing taken from the PowerPC port
8 * with minor modifications, see there for credits.
9 */
10
11#include <linux/module.h>
12#include <linux/kernel.h>
13#include <linux/string.h>
14#include <linux/sched.h>
15#include <linux/capability.h>
16#include <linux/errno.h>
17#include <linux/pci.h>
18#include <linux/msi.h>
19#include <linux/irq.h>
20#include <linux/init.h>
21#include <linux/of.h>
22#include <linux/of_device.h>
23
24#include <asm/uaccess.h>
25#include <asm/pgtable.h>
26#include <asm/irq.h>
27#include <asm/prom.h>
28#include <asm/apb.h>
29
30#include "pci_impl.h"
31
32/* List of all PCI controllers found in the system. */
33struct pci_pbm_info *pci_pbm_root = NULL;
34
35/* Each PBM found gets a unique index. */
36int pci_num_pbms = 0;
37
38volatile int pci_poke_in_progress;
39volatile int pci_poke_cpu = -1;
40volatile int pci_poke_faulted;
41
42static DEFINE_SPINLOCK(pci_poke_lock);
43
44void pci_config_read8(u8 *addr, u8 *ret)
45{
46 unsigned long flags;
47 u8 byte;
48
49 spin_lock_irqsave(&pci_poke_lock, flags);
50 pci_poke_cpu = smp_processor_id();
51 pci_poke_in_progress = 1;
52 pci_poke_faulted = 0;
53 __asm__ __volatile__("membar #Sync\n\t"
54 "lduba [%1] %2, %0\n\t"
55 "membar #Sync"
56 : "=r" (byte)
57 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
58 : "memory");
59 pci_poke_in_progress = 0;
60 pci_poke_cpu = -1;
61 if (!pci_poke_faulted)
62 *ret = byte;
63 spin_unlock_irqrestore(&pci_poke_lock, flags);
64}
65
66void pci_config_read16(u16 *addr, u16 *ret)
67{
68 unsigned long flags;
69 u16 word;
70
71 spin_lock_irqsave(&pci_poke_lock, flags);
72 pci_poke_cpu = smp_processor_id();
73 pci_poke_in_progress = 1;
74 pci_poke_faulted = 0;
75 __asm__ __volatile__("membar #Sync\n\t"
76 "lduha [%1] %2, %0\n\t"
77 "membar #Sync"
78 : "=r" (word)
79 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
80 : "memory");
81 pci_poke_in_progress = 0;
82 pci_poke_cpu = -1;
83 if (!pci_poke_faulted)
84 *ret = word;
85 spin_unlock_irqrestore(&pci_poke_lock, flags);
86}
87
88void pci_config_read32(u32 *addr, u32 *ret)
89{
90 unsigned long flags;
91 u32 dword;
92
93 spin_lock_irqsave(&pci_poke_lock, flags);
94 pci_poke_cpu = smp_processor_id();
95 pci_poke_in_progress = 1;
96 pci_poke_faulted = 0;
97 __asm__ __volatile__("membar #Sync\n\t"
98 "lduwa [%1] %2, %0\n\t"
99 "membar #Sync"
100 : "=r" (dword)
101 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
102 : "memory");
103 pci_poke_in_progress = 0;
104 pci_poke_cpu = -1;
105 if (!pci_poke_faulted)
106 *ret = dword;
107 spin_unlock_irqrestore(&pci_poke_lock, flags);
108}
109
110void pci_config_write8(u8 *addr, u8 val)
111{
112 unsigned long flags;
113
114 spin_lock_irqsave(&pci_poke_lock, flags);
115 pci_poke_cpu = smp_processor_id();
116 pci_poke_in_progress = 1;
117 pci_poke_faulted = 0;
118 __asm__ __volatile__("membar #Sync\n\t"
119 "stba %0, [%1] %2\n\t"
120 "membar #Sync"
121 : /* no outputs */
122 : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
123 : "memory");
124 pci_poke_in_progress = 0;
125 pci_poke_cpu = -1;
126 spin_unlock_irqrestore(&pci_poke_lock, flags);
127}
128
129void pci_config_write16(u16 *addr, u16 val)
130{
131 unsigned long flags;
132
133 spin_lock_irqsave(&pci_poke_lock, flags);
134 pci_poke_cpu = smp_processor_id();
135 pci_poke_in_progress = 1;
136 pci_poke_faulted = 0;
137 __asm__ __volatile__("membar #Sync\n\t"
138 "stha %0, [%1] %2\n\t"
139 "membar #Sync"
140 : /* no outputs */
141 : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
142 : "memory");
143 pci_poke_in_progress = 0;
144 pci_poke_cpu = -1;
145 spin_unlock_irqrestore(&pci_poke_lock, flags);
146}
147
148void pci_config_write32(u32 *addr, u32 val)
149{
150 unsigned long flags;
151
152 spin_lock_irqsave(&pci_poke_lock, flags);
153 pci_poke_cpu = smp_processor_id();
154 pci_poke_in_progress = 1;
155 pci_poke_faulted = 0;
156 __asm__ __volatile__("membar #Sync\n\t"
157 "stwa %0, [%1] %2\n\t"
158 "membar #Sync"
159 : /* no outputs */
160 : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
161 : "memory");
162 pci_poke_in_progress = 0;
163 pci_poke_cpu = -1;
164 spin_unlock_irqrestore(&pci_poke_lock, flags);
165}
166
167static int ofpci_verbose;
168
169static int __init ofpci_debug(char *str)
170{
171 int val = 0;
172
173 get_option(&str, &val);
174 if (val)
175 ofpci_verbose = 1;
176 return 1;
177}
178
179__setup("ofpci_debug=", ofpci_debug);
180
181static unsigned long pci_parse_of_flags(u32 addr0)
182{
183 unsigned long flags = 0;
184
185 if (addr0 & 0x02000000) {
186 flags = IORESOURCE_MEM | PCI_BASE_ADDRESS_SPACE_MEMORY;
187 flags |= (addr0 >> 22) & PCI_BASE_ADDRESS_MEM_TYPE_64;
188 flags |= (addr0 >> 28) & PCI_BASE_ADDRESS_MEM_TYPE_1M;
189 if (addr0 & 0x40000000)
190 flags |= IORESOURCE_PREFETCH
191 | PCI_BASE_ADDRESS_MEM_PREFETCH;
192 } else if (addr0 & 0x01000000)
193 flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
194 return flags;
195}
196
197/* The of_device layer has translated all of the assigned-address properties
198 * into physical address resources, we only have to figure out the register
199 * mapping.
200 */
201static void pci_parse_of_addrs(struct of_device *op,
202 struct device_node *node,
203 struct pci_dev *dev)
204{
205 struct resource *op_res;
206 const u32 *addrs;
207 int proplen;
208
209 addrs = of_get_property(node, "assigned-addresses", &proplen);
210 if (!addrs)
211 return;
212 if (ofpci_verbose)
213 printk(" parse addresses (%d bytes) @ %p\n",
214 proplen, addrs);
215 op_res = &op->resource[0];
216 for (; proplen >= 20; proplen -= 20, addrs += 5, op_res++) {
217 struct resource *res;
218 unsigned long flags;
219 int i;
220
221 flags = pci_parse_of_flags(addrs[0]);
222 if (!flags)
223 continue;
224 i = addrs[0] & 0xff;
225 if (ofpci_verbose)
226 printk(" start: %lx, end: %lx, i: %x\n",
227 op_res->start, op_res->end, i);
228
229 if (PCI_BASE_ADDRESS_0 <= i && i <= PCI_BASE_ADDRESS_5) {
230 res = &dev->resource[(i - PCI_BASE_ADDRESS_0) >> 2];
231 } else if (i == dev->rom_base_reg) {
232 res = &dev->resource[PCI_ROM_RESOURCE];
233 flags |= IORESOURCE_READONLY | IORESOURCE_CACHEABLE;
234 } else {
235 printk(KERN_ERR "PCI: bad cfg reg num 0x%x\n", i);
236 continue;
237 }
238 res->start = op_res->start;
239 res->end = op_res->end;
240 res->flags = flags;
241 res->name = pci_name(dev);
242 }
243}
244
245static struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm,
246 struct device_node *node,
247 struct pci_bus *bus, int devfn)
248{
249 struct dev_archdata *sd;
250 struct of_device *op;
251 struct pci_dev *dev;
252 const char *type;
253 u32 class;
254
255 dev = alloc_pci_dev();
256 if (!dev)
257 return NULL;
258
259 sd = &dev->dev.archdata;
260 sd->iommu = pbm->iommu;
261 sd->stc = &pbm->stc;
262 sd->host_controller = pbm;
263 sd->prom_node = node;
264 sd->op = op = of_find_device_by_node(node);
265 sd->numa_node = pbm->numa_node;
266
267 sd = &op->dev.archdata;
268 sd->iommu = pbm->iommu;
269 sd->stc = &pbm->stc;
270 sd->numa_node = pbm->numa_node;
271
272 if (!strcmp(node->name, "ebus"))
273 of_propagate_archdata(op);
274
275 type = of_get_property(node, "device_type", NULL);
276 if (type == NULL)
277 type = "";
278
279 if (ofpci_verbose)
280 printk(" create device, devfn: %x, type: %s\n",
281 devfn, type);
282
283 dev->bus = bus;
284 dev->sysdata = node;
285 dev->dev.parent = bus->bridge;
286 dev->dev.bus = &pci_bus_type;
287 dev->devfn = devfn;
288 dev->multifunction = 0; /* maybe a lie? */
289
290 dev->vendor = of_getintprop_default(node, "vendor-id", 0xffff);
291 dev->device = of_getintprop_default(node, "device-id", 0xffff);
292 dev->subsystem_vendor =
293 of_getintprop_default(node, "subsystem-vendor-id", 0);
294 dev->subsystem_device =
295 of_getintprop_default(node, "subsystem-id", 0);
296
297 dev->cfg_size = pci_cfg_space_size(dev);
298
299 /* We can't actually use the firmware value, we have
300 * to read what is in the register right now. One
301 * reason is that in the case of IDE interfaces the
302 * firmware can sample the value before the the IDE
303 * interface is programmed into native mode.
304 */
305 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class);
306 dev->class = class >> 8;
307 dev->revision = class & 0xff;
308
309 dev_set_name(&dev->dev, "%04x:%02x:%02x.%d", pci_domain_nr(bus),
310 dev->bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
311
312 if (ofpci_verbose)
313 printk(" class: 0x%x device name: %s\n",
314 dev->class, pci_name(dev));
315
316 /* I have seen IDE devices which will not respond to
317 * the bmdma simplex check reads if bus mastering is
318 * disabled.
319 */
320 if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE)
321 pci_set_master(dev);
322
323 dev->current_state = 4; /* unknown power state */
324 dev->error_state = pci_channel_io_normal;
325
326 if (!strcmp(node->name, "pci")) {
327 /* a PCI-PCI bridge */
328 dev->hdr_type = PCI_HEADER_TYPE_BRIDGE;
329 dev->rom_base_reg = PCI_ROM_ADDRESS1;
330 } else if (!strcmp(type, "cardbus")) {
331 dev->hdr_type = PCI_HEADER_TYPE_CARDBUS;
332 } else {
333 dev->hdr_type = PCI_HEADER_TYPE_NORMAL;
334 dev->rom_base_reg = PCI_ROM_ADDRESS;
335
336 dev->irq = sd->op->irqs[0];
337 if (dev->irq == 0xffffffff)
338 dev->irq = PCI_IRQ_NONE;
339 }
340
341 pci_parse_of_addrs(sd->op, node, dev);
342
343 if (ofpci_verbose)
344 printk(" adding to system ...\n");
345
346 pci_device_add(dev, bus);
347
348 return dev;
349}
350
351static void __devinit apb_calc_first_last(u8 map, u32 *first_p, u32 *last_p)
352{
353 u32 idx, first, last;
354
355 first = 8;
356 last = 0;
357 for (idx = 0; idx < 8; idx++) {
358 if ((map & (1 << idx)) != 0) {
359 if (first > idx)
360 first = idx;
361 if (last < idx)
362 last = idx;
363 }
364 }
365
366 *first_p = first;
367 *last_p = last;
368}
369
370static void pci_resource_adjust(struct resource *res,
371 struct resource *root)
372{
373 res->start += root->start;
374 res->end += root->start;
375}
376
377/* For PCI bus devices which lack a 'ranges' property we interrogate
378 * the config space values to set the resources, just like the generic
379 * Linux PCI probing code does.
380 */
381static void __devinit pci_cfg_fake_ranges(struct pci_dev *dev,
382 struct pci_bus *bus,
383 struct pci_pbm_info *pbm)
384{
385 struct resource *res;
386 u8 io_base_lo, io_limit_lo;
387 u16 mem_base_lo, mem_limit_lo;
388 unsigned long base, limit;
389
390 pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
391 pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
392 base = (io_base_lo & PCI_IO_RANGE_MASK) << 8;
393 limit = (io_limit_lo & PCI_IO_RANGE_MASK) << 8;
394
395 if ((io_base_lo & PCI_IO_RANGE_TYPE_MASK) == PCI_IO_RANGE_TYPE_32) {
396 u16 io_base_hi, io_limit_hi;
397
398 pci_read_config_word(dev, PCI_IO_BASE_UPPER16, &io_base_hi);
399 pci_read_config_word(dev, PCI_IO_LIMIT_UPPER16, &io_limit_hi);
400 base |= (io_base_hi << 16);
401 limit |= (io_limit_hi << 16);
402 }
403
404 res = bus->resource[0];
405 if (base <= limit) {
406 res->flags = (io_base_lo & PCI_IO_RANGE_TYPE_MASK) | IORESOURCE_IO;
407 if (!res->start)
408 res->start = base;
409 if (!res->end)
410 res->end = limit + 0xfff;
411 pci_resource_adjust(res, &pbm->io_space);
412 }
413
414 pci_read_config_word(dev, PCI_MEMORY_BASE, &mem_base_lo);
415 pci_read_config_word(dev, PCI_MEMORY_LIMIT, &mem_limit_lo);
416 base = (mem_base_lo & PCI_MEMORY_RANGE_MASK) << 16;
417 limit = (mem_limit_lo & PCI_MEMORY_RANGE_MASK) << 16;
418
419 res = bus->resource[1];
420 if (base <= limit) {
421 res->flags = ((mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) |
422 IORESOURCE_MEM);
423 res->start = base;
424 res->end = limit + 0xfffff;
425 pci_resource_adjust(res, &pbm->mem_space);
426 }
427
428 pci_read_config_word(dev, PCI_PREF_MEMORY_BASE, &mem_base_lo);
429 pci_read_config_word(dev, PCI_PREF_MEMORY_LIMIT, &mem_limit_lo);
430 base = (mem_base_lo & PCI_PREF_RANGE_MASK) << 16;
431 limit = (mem_limit_lo & PCI_PREF_RANGE_MASK) << 16;
432
433 if ((mem_base_lo & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64) {
434 u32 mem_base_hi, mem_limit_hi;
435
436 pci_read_config_dword(dev, PCI_PREF_BASE_UPPER32, &mem_base_hi);
437 pci_read_config_dword(dev, PCI_PREF_LIMIT_UPPER32, &mem_limit_hi);
438
439 /*
440 * Some bridges set the base > limit by default, and some
441 * (broken) BIOSes do not initialize them. If we find
442 * this, just assume they are not being used.
443 */
444 if (mem_base_hi <= mem_limit_hi) {
445 base |= ((long) mem_base_hi) << 32;
446 limit |= ((long) mem_limit_hi) << 32;
447 }
448 }
449
450 res = bus->resource[2];
451 if (base <= limit) {
452 res->flags = ((mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) |
453 IORESOURCE_MEM | IORESOURCE_PREFETCH);
454 res->start = base;
455 res->end = limit + 0xfffff;
456 pci_resource_adjust(res, &pbm->mem_space);
457 }
458}
459
460/* Cook up fake bus resources for SUNW,simba PCI bridges which lack
461 * a proper 'ranges' property.
462 */
463static void __devinit apb_fake_ranges(struct pci_dev *dev,
464 struct pci_bus *bus,
465 struct pci_pbm_info *pbm)
466{
467 struct resource *res;
468 u32 first, last;
469 u8 map;
470
471 pci_read_config_byte(dev, APB_IO_ADDRESS_MAP, &map);
472 apb_calc_first_last(map, &first, &last);
473 res = bus->resource[0];
474 res->start = (first << 21);
475 res->end = (last << 21) + ((1 << 21) - 1);
476 res->flags = IORESOURCE_IO;
477 pci_resource_adjust(res, &pbm->io_space);
478
479 pci_read_config_byte(dev, APB_MEM_ADDRESS_MAP, &map);
480 apb_calc_first_last(map, &first, &last);
481 res = bus->resource[1];
482 res->start = (first << 21);
483 res->end = (last << 21) + ((1 << 21) - 1);
484 res->flags = IORESOURCE_MEM;
485 pci_resource_adjust(res, &pbm->mem_space);
486}
487
488static void __devinit pci_of_scan_bus(struct pci_pbm_info *pbm,
489 struct device_node *node,
490 struct pci_bus *bus);
491
492#define GET_64BIT(prop, i) ((((u64) (prop)[(i)]) << 32) | (prop)[(i)+1])
493
494static void __devinit of_scan_pci_bridge(struct pci_pbm_info *pbm,
495 struct device_node *node,
496 struct pci_dev *dev)
497{
498 struct pci_bus *bus;
499 const u32 *busrange, *ranges;
500 int len, i, simba;
501 struct resource *res;
502 unsigned int flags;
503 u64 size;
504
505 if (ofpci_verbose)
506 printk("of_scan_pci_bridge(%s)\n", node->full_name);
507
508 /* parse bus-range property */
509 busrange = of_get_property(node, "bus-range", &len);
510 if (busrange == NULL || len != 8) {
511 printk(KERN_DEBUG "Can't get bus-range for PCI-PCI bridge %s\n",
512 node->full_name);
513 return;
514 }
515 ranges = of_get_property(node, "ranges", &len);
516 simba = 0;
517 if (ranges == NULL) {
518 const char *model = of_get_property(node, "model", NULL);
519 if (model && !strcmp(model, "SUNW,simba"))
520 simba = 1;
521 }
522
523 bus = pci_add_new_bus(dev->bus, dev, busrange[0]);
524 if (!bus) {
525 printk(KERN_ERR "Failed to create pci bus for %s\n",
526 node->full_name);
527 return;
528 }
529
530 bus->primary = dev->bus->number;
531 bus->subordinate = busrange[1];
532 bus->bridge_ctl = 0;
533
534 /* parse ranges property, or cook one up by hand for Simba */
535 /* PCI #address-cells == 3 and #size-cells == 2 always */
536 res = &dev->resource[PCI_BRIDGE_RESOURCES];
537 for (i = 0; i < PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES; ++i) {
538 res->flags = 0;
539 bus->resource[i] = res;
540 ++res;
541 }
542 if (simba) {
543 apb_fake_ranges(dev, bus, pbm);
544 goto after_ranges;
545 } else if (ranges == NULL) {
546 pci_cfg_fake_ranges(dev, bus, pbm);
547 goto after_ranges;
548 }
549 i = 1;
550 for (; len >= 32; len -= 32, ranges += 8) {
551 struct resource *root;
552
553 flags = pci_parse_of_flags(ranges[0]);
554 size = GET_64BIT(ranges, 6);
555 if (flags == 0 || size == 0)
556 continue;
557 if (flags & IORESOURCE_IO) {
558 res = bus->resource[0];
559 if (res->flags) {
560 printk(KERN_ERR "PCI: ignoring extra I/O range"
561 " for bridge %s\n", node->full_name);
562 continue;
563 }
564 root = &pbm->io_space;
565 } else {
566 if (i >= PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES) {
567 printk(KERN_ERR "PCI: too many memory ranges"
568 " for bridge %s\n", node->full_name);
569 continue;
570 }
571 res = bus->resource[i];
572 ++i;
573 root = &pbm->mem_space;
574 }
575
576 res->start = GET_64BIT(ranges, 1);
577 res->end = res->start + size - 1;
578 res->flags = flags;
579
580 /* Another way to implement this would be to add an of_device
581 * layer routine that can calculate a resource for a given
582 * range property value in a PCI device.
583 */
584 pci_resource_adjust(res, root);
585 }
586after_ranges:
587 sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus),
588 bus->number);
589 if (ofpci_verbose)
590 printk(" bus name: %s\n", bus->name);
591
592 pci_of_scan_bus(pbm, node, bus);
593}
594
595static void __devinit pci_of_scan_bus(struct pci_pbm_info *pbm,
596 struct device_node *node,
597 struct pci_bus *bus)
598{
599 struct device_node *child;
600 const u32 *reg;
601 int reglen, devfn, prev_devfn;
602 struct pci_dev *dev;
603
604 if (ofpci_verbose)
605 printk("PCI: scan_bus[%s] bus no %d\n",
606 node->full_name, bus->number);
607
608 child = NULL;
609 prev_devfn = -1;
610 while ((child = of_get_next_child(node, child)) != NULL) {
611 if (ofpci_verbose)
612 printk(" * %s\n", child->full_name);
613 reg = of_get_property(child, "reg", &reglen);
614 if (reg == NULL || reglen < 20)
615 continue;
616
617 devfn = (reg[0] >> 8) & 0xff;
618
619 /* This is a workaround for some device trees
620 * which list PCI devices twice. On the V100
621 * for example, device number 3 is listed twice.
622 * Once as "pm" and once again as "lomp".
623 */
624 if (devfn == prev_devfn)
625 continue;
626 prev_devfn = devfn;
627
628 /* create a new pci_dev for this device */
629 dev = of_create_pci_dev(pbm, child, bus, devfn);
630 if (!dev)
631 continue;
632 if (ofpci_verbose)
633 printk("PCI: dev header type: %x\n",
634 dev->hdr_type);
635
636 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
637 dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
638 of_scan_pci_bridge(pbm, child, dev);
639 }
640}
641
642static ssize_t
643show_pciobppath_attr(struct device * dev, struct device_attribute * attr, char * buf)
644{
645 struct pci_dev *pdev;
646 struct device_node *dp;
647
648 pdev = to_pci_dev(dev);
649 dp = pdev->dev.archdata.prom_node;
650
651 return snprintf (buf, PAGE_SIZE, "%s\n", dp->full_name);
652}
653
654static DEVICE_ATTR(obppath, S_IRUSR | S_IRGRP | S_IROTH, show_pciobppath_attr, NULL);
655
656static void __devinit pci_bus_register_of_sysfs(struct pci_bus *bus)
657{
658 struct pci_dev *dev;
659 struct pci_bus *child_bus;
660 int err;
661
662 list_for_each_entry(dev, &bus->devices, bus_list) {
663 /* we don't really care if we can create this file or
664 * not, but we need to assign the result of the call
665 * or the world will fall under alien invasion and
666 * everybody will be frozen on a spaceship ready to be
667 * eaten on alpha centauri by some green and jelly
668 * humanoid.
669 */
670 err = sysfs_create_file(&dev->dev.kobj, &dev_attr_obppath.attr);
671 }
672 list_for_each_entry(child_bus, &bus->children, node)
673 pci_bus_register_of_sysfs(child_bus);
674}
675
676struct pci_bus * __devinit pci_scan_one_pbm(struct pci_pbm_info *pbm,
677 struct device *parent)
678{
679 struct device_node *node = pbm->op->node;
680 struct pci_bus *bus;
681
682 printk("PCI: Scanning PBM %s\n", node->full_name);
683
684 bus = pci_create_bus(parent, pbm->pci_first_busno, pbm->pci_ops, pbm);
685 if (!bus) {
686 printk(KERN_ERR "Failed to create bus for %s\n",
687 node->full_name);
688 return NULL;
689 }
690 bus->secondary = pbm->pci_first_busno;
691 bus->subordinate = pbm->pci_last_busno;
692
693 bus->resource[0] = &pbm->io_space;
694 bus->resource[1] = &pbm->mem_space;
695
696 pci_of_scan_bus(pbm, node, bus);
697 pci_bus_add_devices(bus);
698 pci_bus_register_of_sysfs(bus);
699
700 return bus;
701}
702
703void __devinit pcibios_fixup_bus(struct pci_bus *pbus)
704{
705 struct pci_pbm_info *pbm = pbus->sysdata;
706
707 /* Generic PCI bus probing sets these to point at
708 * &io{port,mem}_resouce which is wrong for us.
709 */
710 pbus->resource[0] = &pbm->io_space;
711 pbus->resource[1] = &pbm->mem_space;
712}
713
714struct resource *pcibios_select_root(struct pci_dev *pdev, struct resource *r)
715{
716 struct pci_pbm_info *pbm = pdev->bus->sysdata;
717 struct resource *root = NULL;
718
719 if (r->flags & IORESOURCE_IO)
720 root = &pbm->io_space;
721 if (r->flags & IORESOURCE_MEM)
722 root = &pbm->mem_space;
723
724 return root;
725}
726
727void pcibios_update_irq(struct pci_dev *pdev, int irq)
728{
729}
730
731void pcibios_align_resource(void *data, struct resource *res,
732 resource_size_t size, resource_size_t align)
733{
734}
735
736int pcibios_enable_device(struct pci_dev *dev, int mask)
737{
738 u16 cmd, oldcmd;
739 int i;
740
741 pci_read_config_word(dev, PCI_COMMAND, &cmd);
742 oldcmd = cmd;
743
744 for (i = 0; i < PCI_NUM_RESOURCES; i++) {
745 struct resource *res = &dev->resource[i];
746
747 /* Only set up the requested stuff */
748 if (!(mask & (1<<i)))
749 continue;
750
751 if (res->flags & IORESOURCE_IO)
752 cmd |= PCI_COMMAND_IO;
753 if (res->flags & IORESOURCE_MEM)
754 cmd |= PCI_COMMAND_MEMORY;
755 }
756
757 if (cmd != oldcmd) {
758 printk(KERN_DEBUG "PCI: Enabling device: (%s), cmd %x\n",
759 pci_name(dev), cmd);
760 /* Enable the appropriate bits in the PCI command register. */
761 pci_write_config_word(dev, PCI_COMMAND, cmd);
762 }
763 return 0;
764}
765
766void pcibios_resource_to_bus(struct pci_dev *pdev, struct pci_bus_region *region,
767 struct resource *res)
768{
769 struct pci_pbm_info *pbm = pdev->bus->sysdata;
770 struct resource zero_res, *root;
771
772 zero_res.start = 0;
773 zero_res.end = 0;
774 zero_res.flags = res->flags;
775
776 if (res->flags & IORESOURCE_IO)
777 root = &pbm->io_space;
778 else
779 root = &pbm->mem_space;
780
781 pci_resource_adjust(&zero_res, root);
782
783 region->start = res->start - zero_res.start;
784 region->end = res->end - zero_res.start;
785}
786EXPORT_SYMBOL(pcibios_resource_to_bus);
787
788void pcibios_bus_to_resource(struct pci_dev *pdev, struct resource *res,
789 struct pci_bus_region *region)
790{
791 struct pci_pbm_info *pbm = pdev->bus->sysdata;
792 struct resource *root;
793
794 res->start = region->start;
795 res->end = region->end;
796
797 if (res->flags & IORESOURCE_IO)
798 root = &pbm->io_space;
799 else
800 root = &pbm->mem_space;
801
802 pci_resource_adjust(res, root);
803}
804EXPORT_SYMBOL(pcibios_bus_to_resource);
805
806char * __devinit pcibios_setup(char *str)
807{
808 return str;
809}
810
811/* Platform support for /proc/bus/pci/X/Y mmap()s. */
812
813/* If the user uses a host-bridge as the PCI device, he may use
814 * this to perform a raw mmap() of the I/O or MEM space behind
815 * that controller.
816 *
817 * This can be useful for execution of x86 PCI bios initialization code
818 * on a PCI card, like the xfree86 int10 stuff does.
819 */
820static int __pci_mmap_make_offset_bus(struct pci_dev *pdev, struct vm_area_struct *vma,
821 enum pci_mmap_state mmap_state)
822{
823 struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
824 unsigned long space_size, user_offset, user_size;
825
826 if (mmap_state == pci_mmap_io) {
827 space_size = (pbm->io_space.end -
828 pbm->io_space.start) + 1;
829 } else {
830 space_size = (pbm->mem_space.end -
831 pbm->mem_space.start) + 1;
832 }
833
834 /* Make sure the request is in range. */
835 user_offset = vma->vm_pgoff << PAGE_SHIFT;
836 user_size = vma->vm_end - vma->vm_start;
837
838 if (user_offset >= space_size ||
839 (user_offset + user_size) > space_size)
840 return -EINVAL;
841
842 if (mmap_state == pci_mmap_io) {
843 vma->vm_pgoff = (pbm->io_space.start +
844 user_offset) >> PAGE_SHIFT;
845 } else {
846 vma->vm_pgoff = (pbm->mem_space.start +
847 user_offset) >> PAGE_SHIFT;
848 }
849
850 return 0;
851}
852
853/* Adjust vm_pgoff of VMA such that it is the physical page offset
854 * corresponding to the 32-bit pci bus offset for DEV requested by the user.
855 *
856 * Basically, the user finds the base address for his device which he wishes
857 * to mmap. They read the 32-bit value from the config space base register,
858 * add whatever PAGE_SIZE multiple offset they wish, and feed this into the
859 * offset parameter of mmap on /proc/bus/pci/XXX for that device.
860 *
861 * Returns negative error code on failure, zero on success.
862 */
863static int __pci_mmap_make_offset(struct pci_dev *pdev,
864 struct vm_area_struct *vma,
865 enum pci_mmap_state mmap_state)
866{
867 unsigned long user_paddr, user_size;
868 int i, err;
869
870 /* First compute the physical address in vma->vm_pgoff,
871 * making sure the user offset is within range in the
872 * appropriate PCI space.
873 */
874 err = __pci_mmap_make_offset_bus(pdev, vma, mmap_state);
875 if (err)
876 return err;
877
878 /* If this is a mapping on a host bridge, any address
879 * is OK.
880 */
881 if ((pdev->class >> 8) == PCI_CLASS_BRIDGE_HOST)
882 return err;
883
884 /* Otherwise make sure it's in the range for one of the
885 * device's resources.
886 */
887 user_paddr = vma->vm_pgoff << PAGE_SHIFT;
888 user_size = vma->vm_end - vma->vm_start;
889
890 for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
891 struct resource *rp = &pdev->resource[i];
892 resource_size_t aligned_end;
893
894 /* Active? */
895 if (!rp->flags)
896 continue;
897
898 /* Same type? */
899 if (i == PCI_ROM_RESOURCE) {
900 if (mmap_state != pci_mmap_mem)
901 continue;
902 } else {
903 if ((mmap_state == pci_mmap_io &&
904 (rp->flags & IORESOURCE_IO) == 0) ||
905 (mmap_state == pci_mmap_mem &&
906 (rp->flags & IORESOURCE_MEM) == 0))
907 continue;
908 }
909
910 /* Align the resource end to the next page address.
911 * PAGE_SIZE intentionally added instead of (PAGE_SIZE - 1),
912 * because actually we need the address of the next byte
913 * after rp->end.
914 */
915 aligned_end = (rp->end + PAGE_SIZE) & PAGE_MASK;
916
917 if ((rp->start <= user_paddr) &&
918 (user_paddr + user_size) <= aligned_end)
919 break;
920 }
921
922 if (i > PCI_ROM_RESOURCE)
923 return -EINVAL;
924
925 return 0;
926}
927
928/* Set vm_flags of VMA, as appropriate for this architecture, for a pci device
929 * mapping.
930 */
931static void __pci_mmap_set_flags(struct pci_dev *dev, struct vm_area_struct *vma,
932 enum pci_mmap_state mmap_state)
933{
934 vma->vm_flags |= (VM_IO | VM_RESERVED);
935}
936
937/* Set vm_page_prot of VMA, as appropriate for this architecture, for a pci
938 * device mapping.
939 */
940static void __pci_mmap_set_pgprot(struct pci_dev *dev, struct vm_area_struct *vma,
941 enum pci_mmap_state mmap_state)
942{
943 /* Our io_remap_pfn_range takes care of this, do nothing. */
944}
945
946/* Perform the actual remap of the pages for a PCI device mapping, as appropriate
947 * for this architecture. The region in the process to map is described by vm_start
948 * and vm_end members of VMA, the base physical address is found in vm_pgoff.
949 * The pci device structure is provided so that architectures may make mapping
950 * decisions on a per-device or per-bus basis.
951 *
952 * Returns a negative error code on failure, zero on success.
953 */
954int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
955 enum pci_mmap_state mmap_state,
956 int write_combine)
957{
958 int ret;
959
960 ret = __pci_mmap_make_offset(dev, vma, mmap_state);
961 if (ret < 0)
962 return ret;
963
964 __pci_mmap_set_flags(dev, vma, mmap_state);
965 __pci_mmap_set_pgprot(dev, vma, mmap_state);
966
967 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
968 ret = io_remap_pfn_range(vma, vma->vm_start,
969 vma->vm_pgoff,
970 vma->vm_end - vma->vm_start,
971 vma->vm_page_prot);
972 if (ret)
973 return ret;
974
975 return 0;
976}
977
978#ifdef CONFIG_NUMA
979int pcibus_to_node(struct pci_bus *pbus)
980{
981 struct pci_pbm_info *pbm = pbus->sysdata;
982
983 return pbm->numa_node;
984}
985EXPORT_SYMBOL(pcibus_to_node);
986#endif
987
988/* Return the domain number for this pci bus */
989
990int pci_domain_nr(struct pci_bus *pbus)
991{
992 struct pci_pbm_info *pbm = pbus->sysdata;
993 int ret;
994
995 if (!pbm) {
996 ret = -ENXIO;
997 } else {
998 ret = pbm->index;
999 }
1000
1001 return ret;
1002}
1003EXPORT_SYMBOL(pci_domain_nr);
1004
1005#ifdef CONFIG_PCI_MSI
1006int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
1007{
1008 struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
1009 unsigned int virt_irq;
1010
1011 if (!pbm->setup_msi_irq)
1012 return -EINVAL;
1013
1014 return pbm->setup_msi_irq(&virt_irq, pdev, desc);
1015}
1016
1017void arch_teardown_msi_irq(unsigned int virt_irq)
1018{
1019 struct msi_desc *entry = get_irq_msi(virt_irq);
1020 struct pci_dev *pdev = entry->dev;
1021 struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
1022
1023 if (pbm->teardown_msi_irq)
1024 pbm->teardown_msi_irq(virt_irq, pdev);
1025}
1026#endif /* !(CONFIG_PCI_MSI) */
1027
1028struct device_node *pci_device_to_OF_node(struct pci_dev *pdev)
1029{
1030 return pdev->dev.archdata.prom_node;
1031}
1032EXPORT_SYMBOL(pci_device_to_OF_node);
1033
1034static void ali_sound_dma_hack(struct pci_dev *pdev, int set_bit)
1035{
1036 struct pci_dev *ali_isa_bridge;
1037 u8 val;
1038
1039 /* ALI sound chips generate 31-bits of DMA, a special register
1040 * determines what bit 31 is emitted as.
1041 */
1042 ali_isa_bridge = pci_get_device(PCI_VENDOR_ID_AL,
1043 PCI_DEVICE_ID_AL_M1533,
1044 NULL);
1045
1046 pci_read_config_byte(ali_isa_bridge, 0x7e, &val);
1047 if (set_bit)
1048 val |= 0x01;
1049 else
1050 val &= ~0x01;
1051 pci_write_config_byte(ali_isa_bridge, 0x7e, val);
1052 pci_dev_put(ali_isa_bridge);
1053}
1054
1055int pci_dma_supported(struct pci_dev *pdev, u64 device_mask)
1056{
1057 u64 dma_addr_mask;
1058
1059 if (pdev == NULL) {
1060 dma_addr_mask = 0xffffffff;
1061 } else {
1062 struct iommu *iommu = pdev->dev.archdata.iommu;
1063
1064 dma_addr_mask = iommu->dma_addr_mask;
1065
1066 if (pdev->vendor == PCI_VENDOR_ID_AL &&
1067 pdev->device == PCI_DEVICE_ID_AL_M5451 &&
1068 device_mask == 0x7fffffff) {
1069 ali_sound_dma_hack(pdev,
1070 (dma_addr_mask & 0x80000000) != 0);
1071 return 1;
1072 }
1073 }
1074
1075 if (device_mask >= (1UL << 32UL))
1076 return 0;
1077
1078 return (device_mask & dma_addr_mask) == dma_addr_mask;
1079}
1080
1081void pci_resource_to_user(const struct pci_dev *pdev, int bar,
1082 const struct resource *rp, resource_size_t *start,
1083 resource_size_t *end)
1084{
1085 struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
1086 unsigned long offset;
1087
1088 if (rp->flags & IORESOURCE_IO)
1089 offset = pbm->io_space.start;
1090 else
1091 offset = pbm->mem_space.start;
1092
1093 *start = rp->start - offset;
1094 *end = rp->end - offset;
1095}
diff --git a/arch/sparc/kernel/pci_common.c b/arch/sparc/kernel/pci_common.c
new file mode 100644
index 000000000000..23b88082d0b2
--- /dev/null
+++ b/arch/sparc/kernel/pci_common.c
@@ -0,0 +1,545 @@
1/* pci_common.c: PCI controller common support.
2 *
3 * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
4 */
5
6#include <linux/string.h>
7#include <linux/slab.h>
8#include <linux/init.h>
9#include <linux/pci.h>
10#include <linux/device.h>
11#include <linux/of_device.h>
12
13#include <asm/prom.h>
14#include <asm/oplib.h>
15
16#include "pci_impl.h"
17#include "pci_sun4v.h"
18
19static int config_out_of_range(struct pci_pbm_info *pbm,
20 unsigned long bus,
21 unsigned long devfn,
22 unsigned long reg)
23{
24 if (bus < pbm->pci_first_busno ||
25 bus > pbm->pci_last_busno)
26 return 1;
27 return 0;
28}
29
30static void *sun4u_config_mkaddr(struct pci_pbm_info *pbm,
31 unsigned long bus,
32 unsigned long devfn,
33 unsigned long reg)
34{
35 unsigned long rbits = pbm->config_space_reg_bits;
36
37 if (config_out_of_range(pbm, bus, devfn, reg))
38 return NULL;
39
40 reg = (reg & ((1 << rbits) - 1));
41 devfn <<= rbits;
42 bus <<= rbits + 8;
43
44 return (void *) (pbm->config_space | bus | devfn | reg);
45}
46
47/* At least on Sabre, it is necessary to access all PCI host controller
48 * registers at their natural size, otherwise zeros are returned.
49 * Strange but true, and I see no language in the UltraSPARC-IIi
50 * programmer's manual that mentions this even indirectly.
51 */
52static int sun4u_read_pci_cfg_host(struct pci_pbm_info *pbm,
53 unsigned char bus, unsigned int devfn,
54 int where, int size, u32 *value)
55{
56 u32 tmp32, *addr;
57 u16 tmp16;
58 u8 tmp8;
59
60 addr = sun4u_config_mkaddr(pbm, bus, devfn, where);
61 if (!addr)
62 return PCIBIOS_SUCCESSFUL;
63
64 switch (size) {
65 case 1:
66 if (where < 8) {
67 unsigned long align = (unsigned long) addr;
68
69 align &= ~1;
70 pci_config_read16((u16 *)align, &tmp16);
71 if (where & 1)
72 *value = tmp16 >> 8;
73 else
74 *value = tmp16 & 0xff;
75 } else {
76 pci_config_read8((u8 *)addr, &tmp8);
77 *value = (u32) tmp8;
78 }
79 break;
80
81 case 2:
82 if (where < 8) {
83 pci_config_read16((u16 *)addr, &tmp16);
84 *value = (u32) tmp16;
85 } else {
86 pci_config_read8((u8 *)addr, &tmp8);
87 *value = (u32) tmp8;
88 pci_config_read8(((u8 *)addr) + 1, &tmp8);
89 *value |= ((u32) tmp8) << 8;
90 }
91 break;
92
93 case 4:
94 tmp32 = 0xffffffff;
95 sun4u_read_pci_cfg_host(pbm, bus, devfn,
96 where, 2, &tmp32);
97 *value = tmp32;
98
99 tmp32 = 0xffffffff;
100 sun4u_read_pci_cfg_host(pbm, bus, devfn,
101 where + 2, 2, &tmp32);
102 *value |= tmp32 << 16;
103 break;
104 }
105 return PCIBIOS_SUCCESSFUL;
106}
107
108static int sun4u_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
109 int where, int size, u32 *value)
110{
111 struct pci_pbm_info *pbm = bus_dev->sysdata;
112 unsigned char bus = bus_dev->number;
113 u32 *addr;
114 u16 tmp16;
115 u8 tmp8;
116
117 switch (size) {
118 case 1:
119 *value = 0xff;
120 break;
121 case 2:
122 *value = 0xffff;
123 break;
124 case 4:
125 *value = 0xffffffff;
126 break;
127 }
128
129 if (!bus_dev->number && !PCI_SLOT(devfn))
130 return sun4u_read_pci_cfg_host(pbm, bus, devfn, where,
131 size, value);
132
133 addr = sun4u_config_mkaddr(pbm, bus, devfn, where);
134 if (!addr)
135 return PCIBIOS_SUCCESSFUL;
136
137 switch (size) {
138 case 1:
139 pci_config_read8((u8 *)addr, &tmp8);
140 *value = (u32) tmp8;
141 break;
142
143 case 2:
144 if (where & 0x01) {
145 printk("pci_read_config_word: misaligned reg [%x]\n",
146 where);
147 return PCIBIOS_SUCCESSFUL;
148 }
149 pci_config_read16((u16 *)addr, &tmp16);
150 *value = (u32) tmp16;
151 break;
152
153 case 4:
154 if (where & 0x03) {
155 printk("pci_read_config_dword: misaligned reg [%x]\n",
156 where);
157 return PCIBIOS_SUCCESSFUL;
158 }
159 pci_config_read32(addr, value);
160 break;
161 }
162 return PCIBIOS_SUCCESSFUL;
163}
164
165static int sun4u_write_pci_cfg_host(struct pci_pbm_info *pbm,
166 unsigned char bus, unsigned int devfn,
167 int where, int size, u32 value)
168{
169 u32 *addr;
170
171 addr = sun4u_config_mkaddr(pbm, bus, devfn, where);
172 if (!addr)
173 return PCIBIOS_SUCCESSFUL;
174
175 switch (size) {
176 case 1:
177 if (where < 8) {
178 unsigned long align = (unsigned long) addr;
179 u16 tmp16;
180
181 align &= ~1;
182 pci_config_read16((u16 *)align, &tmp16);
183 if (where & 1) {
184 tmp16 &= 0x00ff;
185 tmp16 |= value << 8;
186 } else {
187 tmp16 &= 0xff00;
188 tmp16 |= value;
189 }
190 pci_config_write16((u16 *)align, tmp16);
191 } else
192 pci_config_write8((u8 *)addr, value);
193 break;
194 case 2:
195 if (where < 8) {
196 pci_config_write16((u16 *)addr, value);
197 } else {
198 pci_config_write8((u8 *)addr, value & 0xff);
199 pci_config_write8(((u8 *)addr) + 1, value >> 8);
200 }
201 break;
202 case 4:
203 sun4u_write_pci_cfg_host(pbm, bus, devfn,
204 where, 2, value & 0xffff);
205 sun4u_write_pci_cfg_host(pbm, bus, devfn,
206 where + 2, 2, value >> 16);
207 break;
208 }
209 return PCIBIOS_SUCCESSFUL;
210}
211
212static int sun4u_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
213 int where, int size, u32 value)
214{
215 struct pci_pbm_info *pbm = bus_dev->sysdata;
216 unsigned char bus = bus_dev->number;
217 u32 *addr;
218
219 if (!bus_dev->number && !PCI_SLOT(devfn))
220 return sun4u_write_pci_cfg_host(pbm, bus, devfn, where,
221 size, value);
222
223 addr = sun4u_config_mkaddr(pbm, bus, devfn, where);
224 if (!addr)
225 return PCIBIOS_SUCCESSFUL;
226
227 switch (size) {
228 case 1:
229 pci_config_write8((u8 *)addr, value);
230 break;
231
232 case 2:
233 if (where & 0x01) {
234 printk("pci_write_config_word: misaligned reg [%x]\n",
235 where);
236 return PCIBIOS_SUCCESSFUL;
237 }
238 pci_config_write16((u16 *)addr, value);
239 break;
240
241 case 4:
242 if (where & 0x03) {
243 printk("pci_write_config_dword: misaligned reg [%x]\n",
244 where);
245 return PCIBIOS_SUCCESSFUL;
246 }
247 pci_config_write32(addr, value);
248 }
249 return PCIBIOS_SUCCESSFUL;
250}
251
252struct pci_ops sun4u_pci_ops = {
253 .read = sun4u_read_pci_cfg,
254 .write = sun4u_write_pci_cfg,
255};
256
257static int sun4v_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
258 int where, int size, u32 *value)
259{
260 struct pci_pbm_info *pbm = bus_dev->sysdata;
261 u32 devhandle = pbm->devhandle;
262 unsigned int bus = bus_dev->number;
263 unsigned int device = PCI_SLOT(devfn);
264 unsigned int func = PCI_FUNC(devfn);
265 unsigned long ret;
266
267 if (config_out_of_range(pbm, bus, devfn, where)) {
268 ret = ~0UL;
269 } else {
270 ret = pci_sun4v_config_get(devhandle,
271 HV_PCI_DEVICE_BUILD(bus, device, func),
272 where, size);
273 }
274 switch (size) {
275 case 1:
276 *value = ret & 0xff;
277 break;
278 case 2:
279 *value = ret & 0xffff;
280 break;
281 case 4:
282 *value = ret & 0xffffffff;
283 break;
284 };
285
286
287 return PCIBIOS_SUCCESSFUL;
288}
289
290static int sun4v_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
291 int where, int size, u32 value)
292{
293 struct pci_pbm_info *pbm = bus_dev->sysdata;
294 u32 devhandle = pbm->devhandle;
295 unsigned int bus = bus_dev->number;
296 unsigned int device = PCI_SLOT(devfn);
297 unsigned int func = PCI_FUNC(devfn);
298 unsigned long ret;
299
300 if (config_out_of_range(pbm, bus, devfn, where)) {
301 /* Do nothing. */
302 } else {
303 ret = pci_sun4v_config_put(devhandle,
304 HV_PCI_DEVICE_BUILD(bus, device, func),
305 where, size, value);
306 }
307 return PCIBIOS_SUCCESSFUL;
308}
309
310struct pci_ops sun4v_pci_ops = {
311 .read = sun4v_read_pci_cfg,
312 .write = sun4v_write_pci_cfg,
313};
314
315void pci_get_pbm_props(struct pci_pbm_info *pbm)
316{
317 const u32 *val = of_get_property(pbm->op->node, "bus-range", NULL);
318
319 pbm->pci_first_busno = val[0];
320 pbm->pci_last_busno = val[1];
321
322 val = of_get_property(pbm->op->node, "ino-bitmap", NULL);
323 if (val) {
324 pbm->ino_bitmap = (((u64)val[1] << 32UL) |
325 ((u64)val[0] << 0UL));
326 }
327}
328
329static void pci_register_legacy_regions(struct resource *io_res,
330 struct resource *mem_res)
331{
332 struct resource *p;
333
334 /* VGA Video RAM. */
335 p = kzalloc(sizeof(*p), GFP_KERNEL);
336 if (!p)
337 return;
338
339 p->name = "Video RAM area";
340 p->start = mem_res->start + 0xa0000UL;
341 p->end = p->start + 0x1ffffUL;
342 p->flags = IORESOURCE_BUSY;
343 request_resource(mem_res, p);
344
345 p = kzalloc(sizeof(*p), GFP_KERNEL);
346 if (!p)
347 return;
348
349 p->name = "System ROM";
350 p->start = mem_res->start + 0xf0000UL;
351 p->end = p->start + 0xffffUL;
352 p->flags = IORESOURCE_BUSY;
353 request_resource(mem_res, p);
354
355 p = kzalloc(sizeof(*p), GFP_KERNEL);
356 if (!p)
357 return;
358
359 p->name = "Video ROM";
360 p->start = mem_res->start + 0xc0000UL;
361 p->end = p->start + 0x7fffUL;
362 p->flags = IORESOURCE_BUSY;
363 request_resource(mem_res, p);
364}
365
366static void pci_register_iommu_region(struct pci_pbm_info *pbm)
367{
368 const u32 *vdma = of_get_property(pbm->op->node, "virtual-dma", NULL);
369
370 if (vdma) {
371 struct resource *rp = kmalloc(sizeof(*rp), GFP_KERNEL);
372
373 if (!rp) {
374 prom_printf("Cannot allocate IOMMU resource.\n");
375 prom_halt();
376 }
377 rp->name = "IOMMU";
378 rp->start = pbm->mem_space.start + (unsigned long) vdma[0];
379 rp->end = rp->start + (unsigned long) vdma[1] - 1UL;
380 rp->flags = IORESOURCE_BUSY;
381 request_resource(&pbm->mem_space, rp);
382 }
383}
384
385void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
386{
387 const struct linux_prom_pci_ranges *pbm_ranges;
388 int i, saw_mem, saw_io;
389 int num_pbm_ranges;
390
391 saw_mem = saw_io = 0;
392 pbm_ranges = of_get_property(pbm->op->node, "ranges", &i);
393 if (!pbm_ranges) {
394 prom_printf("PCI: Fatal error, missing PBM ranges property "
395 " for %s\n",
396 pbm->name);
397 prom_halt();
398 }
399
400 num_pbm_ranges = i / sizeof(*pbm_ranges);
401
402 for (i = 0; i < num_pbm_ranges; i++) {
403 const struct linux_prom_pci_ranges *pr = &pbm_ranges[i];
404 unsigned long a, size;
405 u32 parent_phys_hi, parent_phys_lo;
406 u32 size_hi, size_lo;
407 int type;
408
409 parent_phys_hi = pr->parent_phys_hi;
410 parent_phys_lo = pr->parent_phys_lo;
411 if (tlb_type == hypervisor)
412 parent_phys_hi &= 0x0fffffff;
413
414 size_hi = pr->size_hi;
415 size_lo = pr->size_lo;
416
417 type = (pr->child_phys_hi >> 24) & 0x3;
418 a = (((unsigned long)parent_phys_hi << 32UL) |
419 ((unsigned long)parent_phys_lo << 0UL));
420 size = (((unsigned long)size_hi << 32UL) |
421 ((unsigned long)size_lo << 0UL));
422
423 switch (type) {
424 case 0:
425 /* PCI config space, 16MB */
426 pbm->config_space = a;
427 break;
428
429 case 1:
430 /* 16-bit IO space, 16MB */
431 pbm->io_space.start = a;
432 pbm->io_space.end = a + size - 1UL;
433 pbm->io_space.flags = IORESOURCE_IO;
434 saw_io = 1;
435 break;
436
437 case 2:
438 /* 32-bit MEM space, 2GB */
439 pbm->mem_space.start = a;
440 pbm->mem_space.end = a + size - 1UL;
441 pbm->mem_space.flags = IORESOURCE_MEM;
442 saw_mem = 1;
443 break;
444
445 case 3:
446 /* XXX 64-bit MEM handling XXX */
447
448 default:
449 break;
450 };
451 }
452
453 if (!saw_io || !saw_mem) {
454 prom_printf("%s: Fatal error, missing %s PBM range.\n",
455 pbm->name,
456 (!saw_io ? "IO" : "MEM"));
457 prom_halt();
458 }
459
460 printk("%s: PCI IO[%lx] MEM[%lx]\n",
461 pbm->name,
462 pbm->io_space.start,
463 pbm->mem_space.start);
464
465 pbm->io_space.name = pbm->mem_space.name = pbm->name;
466
467 request_resource(&ioport_resource, &pbm->io_space);
468 request_resource(&iomem_resource, &pbm->mem_space);
469
470 pci_register_legacy_regions(&pbm->io_space,
471 &pbm->mem_space);
472 pci_register_iommu_region(pbm);
473}
474
475/* Generic helper routines for PCI error reporting. */
476void pci_scan_for_target_abort(struct pci_pbm_info *pbm,
477 struct pci_bus *pbus)
478{
479 struct pci_dev *pdev;
480 struct pci_bus *bus;
481
482 list_for_each_entry(pdev, &pbus->devices, bus_list) {
483 u16 status, error_bits;
484
485 pci_read_config_word(pdev, PCI_STATUS, &status);
486 error_bits =
487 (status & (PCI_STATUS_SIG_TARGET_ABORT |
488 PCI_STATUS_REC_TARGET_ABORT));
489 if (error_bits) {
490 pci_write_config_word(pdev, PCI_STATUS, error_bits);
491 printk("%s: Device %s saw Target Abort [%016x]\n",
492 pbm->name, pci_name(pdev), status);
493 }
494 }
495
496 list_for_each_entry(bus, &pbus->children, node)
497 pci_scan_for_target_abort(pbm, bus);
498}
499
500void pci_scan_for_master_abort(struct pci_pbm_info *pbm,
501 struct pci_bus *pbus)
502{
503 struct pci_dev *pdev;
504 struct pci_bus *bus;
505
506 list_for_each_entry(pdev, &pbus->devices, bus_list) {
507 u16 status, error_bits;
508
509 pci_read_config_word(pdev, PCI_STATUS, &status);
510 error_bits =
511 (status & (PCI_STATUS_REC_MASTER_ABORT));
512 if (error_bits) {
513 pci_write_config_word(pdev, PCI_STATUS, error_bits);
514 printk("%s: Device %s received Master Abort [%016x]\n",
515 pbm->name, pci_name(pdev), status);
516 }
517 }
518
519 list_for_each_entry(bus, &pbus->children, node)
520 pci_scan_for_master_abort(pbm, bus);
521}
522
523void pci_scan_for_parity_error(struct pci_pbm_info *pbm,
524 struct pci_bus *pbus)
525{
526 struct pci_dev *pdev;
527 struct pci_bus *bus;
528
529 list_for_each_entry(pdev, &pbus->devices, bus_list) {
530 u16 status, error_bits;
531
532 pci_read_config_word(pdev, PCI_STATUS, &status);
533 error_bits =
534 (status & (PCI_STATUS_PARITY |
535 PCI_STATUS_DETECTED_PARITY));
536 if (error_bits) {
537 pci_write_config_word(pdev, PCI_STATUS, error_bits);
538 printk("%s: Device %s saw Parity Error [%016x]\n",
539 pbm->name, pci_name(pdev), status);
540 }
541 }
542
543 list_for_each_entry(bus, &pbus->children, node)
544 pci_scan_for_parity_error(pbm, bus);
545}
diff --git a/arch/sparc/kernel/pci_fire.c b/arch/sparc/kernel/pci_fire.c
new file mode 100644
index 000000000000..9462b68f4894
--- /dev/null
+++ b/arch/sparc/kernel/pci_fire.c
@@ -0,0 +1,521 @@
1/* pci_fire.c: Sun4u platform PCI-E controller support.
2 *
3 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
4 */
5#include <linux/kernel.h>
6#include <linux/pci.h>
7#include <linux/slab.h>
8#include <linux/init.h>
9#include <linux/msi.h>
10#include <linux/irq.h>
11#include <linux/of_device.h>
12
13#include <asm/prom.h>
14#include <asm/irq.h>
15#include <asm/upa.h>
16
17#include "pci_impl.h"
18
19#define DRIVER_NAME "fire"
20#define PFX DRIVER_NAME ": "
21
22#define FIRE_IOMMU_CONTROL 0x40000UL
23#define FIRE_IOMMU_TSBBASE 0x40008UL
24#define FIRE_IOMMU_FLUSH 0x40100UL
25#define FIRE_IOMMU_FLUSHINV 0x40108UL
26
27static int pci_fire_pbm_iommu_init(struct pci_pbm_info *pbm)
28{
29 struct iommu *iommu = pbm->iommu;
30 u32 vdma[2], dma_mask;
31 u64 control;
32 int tsbsize, err;
33
34 /* No virtual-dma property on these guys, use largest size. */
35 vdma[0] = 0xc0000000; /* base */
36 vdma[1] = 0x40000000; /* size */
37 dma_mask = 0xffffffff;
38 tsbsize = 128;
39
40 /* Register addresses. */
41 iommu->iommu_control = pbm->pbm_regs + FIRE_IOMMU_CONTROL;
42 iommu->iommu_tsbbase = pbm->pbm_regs + FIRE_IOMMU_TSBBASE;
43 iommu->iommu_flush = pbm->pbm_regs + FIRE_IOMMU_FLUSH;
44 iommu->iommu_flushinv = pbm->pbm_regs + FIRE_IOMMU_FLUSHINV;
45
46 /* We use the main control/status register of FIRE as the write
47 * completion register.
48 */
49 iommu->write_complete_reg = pbm->controller_regs + 0x410000UL;
50
51 /*
52 * Invalidate TLB Entries.
53 */
54 upa_writeq(~(u64)0, iommu->iommu_flushinv);
55
56 err = iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask,
57 pbm->numa_node);
58 if (err)
59 return err;
60
61 upa_writeq(__pa(iommu->page_table) | 0x7UL, iommu->iommu_tsbbase);
62
63 control = upa_readq(iommu->iommu_control);
64 control |= (0x00000400 /* TSB cache snoop enable */ |
65 0x00000300 /* Cache mode */ |
66 0x00000002 /* Bypass enable */ |
67 0x00000001 /* Translation enable */);
68 upa_writeq(control, iommu->iommu_control);
69
70 return 0;
71}
72
73#ifdef CONFIG_PCI_MSI
74struct pci_msiq_entry {
75 u64 word0;
76#define MSIQ_WORD0_RESV 0x8000000000000000UL
77#define MSIQ_WORD0_FMT_TYPE 0x7f00000000000000UL
78#define MSIQ_WORD0_FMT_TYPE_SHIFT 56
79#define MSIQ_WORD0_LEN 0x00ffc00000000000UL
80#define MSIQ_WORD0_LEN_SHIFT 46
81#define MSIQ_WORD0_ADDR0 0x00003fff00000000UL
82#define MSIQ_WORD0_ADDR0_SHIFT 32
83#define MSIQ_WORD0_RID 0x00000000ffff0000UL
84#define MSIQ_WORD0_RID_SHIFT 16
85#define MSIQ_WORD0_DATA0 0x000000000000ffffUL
86#define MSIQ_WORD0_DATA0_SHIFT 0
87
88#define MSIQ_TYPE_MSG 0x6
89#define MSIQ_TYPE_MSI32 0xb
90#define MSIQ_TYPE_MSI64 0xf
91
92 u64 word1;
93#define MSIQ_WORD1_ADDR1 0xffffffffffff0000UL
94#define MSIQ_WORD1_ADDR1_SHIFT 16
95#define MSIQ_WORD1_DATA1 0x000000000000ffffUL
96#define MSIQ_WORD1_DATA1_SHIFT 0
97
98 u64 resv[6];
99};
100
101/* All MSI registers are offset from pbm->pbm_regs */
102#define EVENT_QUEUE_BASE_ADDR_REG 0x010000UL
103#define EVENT_QUEUE_BASE_ADDR_ALL_ONES 0xfffc000000000000UL
104
105#define EVENT_QUEUE_CONTROL_SET(EQ) (0x011000UL + (EQ) * 0x8UL)
106#define EVENT_QUEUE_CONTROL_SET_OFLOW 0x0200000000000000UL
107#define EVENT_QUEUE_CONTROL_SET_EN 0x0000100000000000UL
108
109#define EVENT_QUEUE_CONTROL_CLEAR(EQ) (0x011200UL + (EQ) * 0x8UL)
110#define EVENT_QUEUE_CONTROL_CLEAR_OF 0x0200000000000000UL
111#define EVENT_QUEUE_CONTROL_CLEAR_E2I 0x0000800000000000UL
112#define EVENT_QUEUE_CONTROL_CLEAR_DIS 0x0000100000000000UL
113
114#define EVENT_QUEUE_STATE(EQ) (0x011400UL + (EQ) * 0x8UL)
115#define EVENT_QUEUE_STATE_MASK 0x0000000000000007UL
116#define EVENT_QUEUE_STATE_IDLE 0x0000000000000001UL
117#define EVENT_QUEUE_STATE_ACTIVE 0x0000000000000002UL
118#define EVENT_QUEUE_STATE_ERROR 0x0000000000000004UL
119
120#define EVENT_QUEUE_TAIL(EQ) (0x011600UL + (EQ) * 0x8UL)
121#define EVENT_QUEUE_TAIL_OFLOW 0x0200000000000000UL
122#define EVENT_QUEUE_TAIL_VAL 0x000000000000007fUL
123
124#define EVENT_QUEUE_HEAD(EQ) (0x011800UL + (EQ) * 0x8UL)
125#define EVENT_QUEUE_HEAD_VAL 0x000000000000007fUL
126
127#define MSI_MAP(MSI) (0x020000UL + (MSI) * 0x8UL)
128#define MSI_MAP_VALID 0x8000000000000000UL
129#define MSI_MAP_EQWR_N 0x4000000000000000UL
130#define MSI_MAP_EQNUM 0x000000000000003fUL
131
132#define MSI_CLEAR(MSI) (0x028000UL + (MSI) * 0x8UL)
133#define MSI_CLEAR_EQWR_N 0x4000000000000000UL
134
135#define IMONDO_DATA0 0x02C000UL
136#define IMONDO_DATA0_DATA 0xffffffffffffffc0UL
137
138#define IMONDO_DATA1 0x02C008UL
139#define IMONDO_DATA1_DATA 0xffffffffffffffffUL
140
141#define MSI_32BIT_ADDR 0x034000UL
142#define MSI_32BIT_ADDR_VAL 0x00000000ffff0000UL
143
144#define MSI_64BIT_ADDR 0x034008UL
145#define MSI_64BIT_ADDR_VAL 0xffffffffffff0000UL
146
147static int pci_fire_get_head(struct pci_pbm_info *pbm, unsigned long msiqid,
148 unsigned long *head)
149{
150 *head = upa_readq(pbm->pbm_regs + EVENT_QUEUE_HEAD(msiqid));
151 return 0;
152}
153
154static int pci_fire_dequeue_msi(struct pci_pbm_info *pbm, unsigned long msiqid,
155 unsigned long *head, unsigned long *msi)
156{
157 unsigned long type_fmt, type, msi_num;
158 struct pci_msiq_entry *base, *ep;
159
160 base = (pbm->msi_queues + ((msiqid - pbm->msiq_first) * 8192));
161 ep = &base[*head];
162
163 if ((ep->word0 & MSIQ_WORD0_FMT_TYPE) == 0)
164 return 0;
165
166 type_fmt = ((ep->word0 & MSIQ_WORD0_FMT_TYPE) >>
167 MSIQ_WORD0_FMT_TYPE_SHIFT);
168 type = (type_fmt >> 3);
169 if (unlikely(type != MSIQ_TYPE_MSI32 &&
170 type != MSIQ_TYPE_MSI64))
171 return -EINVAL;
172
173 *msi = msi_num = ((ep->word0 & MSIQ_WORD0_DATA0) >>
174 MSIQ_WORD0_DATA0_SHIFT);
175
176 upa_writeq(MSI_CLEAR_EQWR_N, pbm->pbm_regs + MSI_CLEAR(msi_num));
177
178 /* Clear the entry. */
179 ep->word0 &= ~MSIQ_WORD0_FMT_TYPE;
180
181 /* Go to next entry in ring. */
182 (*head)++;
183 if (*head >= pbm->msiq_ent_count)
184 *head = 0;
185
186 return 1;
187}
188
189static int pci_fire_set_head(struct pci_pbm_info *pbm, unsigned long msiqid,
190 unsigned long head)
191{
192 upa_writeq(head, pbm->pbm_regs + EVENT_QUEUE_HEAD(msiqid));
193 return 0;
194}
195
196static int pci_fire_msi_setup(struct pci_pbm_info *pbm, unsigned long msiqid,
197 unsigned long msi, int is_msi64)
198{
199 u64 val;
200
201 val = upa_readq(pbm->pbm_regs + MSI_MAP(msi));
202 val &= ~(MSI_MAP_EQNUM);
203 val |= msiqid;
204 upa_writeq(val, pbm->pbm_regs + MSI_MAP(msi));
205
206 upa_writeq(MSI_CLEAR_EQWR_N, pbm->pbm_regs + MSI_CLEAR(msi));
207
208 val = upa_readq(pbm->pbm_regs + MSI_MAP(msi));
209 val |= MSI_MAP_VALID;
210 upa_writeq(val, pbm->pbm_regs + MSI_MAP(msi));
211
212 return 0;
213}
214
215static int pci_fire_msi_teardown(struct pci_pbm_info *pbm, unsigned long msi)
216{
217 unsigned long msiqid;
218 u64 val;
219
220 val = upa_readq(pbm->pbm_regs + MSI_MAP(msi));
221 msiqid = (val & MSI_MAP_EQNUM);
222
223 val &= ~MSI_MAP_VALID;
224
225 upa_writeq(val, pbm->pbm_regs + MSI_MAP(msi));
226
227 return 0;
228}
229
230static int pci_fire_msiq_alloc(struct pci_pbm_info *pbm)
231{
232 unsigned long pages, order, i;
233
234 order = get_order(512 * 1024);
235 pages = __get_free_pages(GFP_KERNEL | __GFP_COMP, order);
236 if (pages == 0UL) {
237 printk(KERN_ERR "MSI: Cannot allocate MSI queues (o=%lu).\n",
238 order);
239 return -ENOMEM;
240 }
241 memset((char *)pages, 0, PAGE_SIZE << order);
242 pbm->msi_queues = (void *) pages;
243
244 upa_writeq((EVENT_QUEUE_BASE_ADDR_ALL_ONES |
245 __pa(pbm->msi_queues)),
246 pbm->pbm_regs + EVENT_QUEUE_BASE_ADDR_REG);
247
248 upa_writeq(pbm->portid << 6, pbm->pbm_regs + IMONDO_DATA0);
249 upa_writeq(0, pbm->pbm_regs + IMONDO_DATA1);
250
251 upa_writeq(pbm->msi32_start, pbm->pbm_regs + MSI_32BIT_ADDR);
252 upa_writeq(pbm->msi64_start, pbm->pbm_regs + MSI_64BIT_ADDR);
253
254 for (i = 0; i < pbm->msiq_num; i++) {
255 upa_writeq(0, pbm->pbm_regs + EVENT_QUEUE_HEAD(i));
256 upa_writeq(0, pbm->pbm_regs + EVENT_QUEUE_TAIL(i));
257 }
258
259 return 0;
260}
261
262static void pci_fire_msiq_free(struct pci_pbm_info *pbm)
263{
264 unsigned long pages, order;
265
266 order = get_order(512 * 1024);
267 pages = (unsigned long) pbm->msi_queues;
268
269 free_pages(pages, order);
270
271 pbm->msi_queues = NULL;
272}
273
274static int pci_fire_msiq_build_irq(struct pci_pbm_info *pbm,
275 unsigned long msiqid,
276 unsigned long devino)
277{
278 unsigned long cregs = (unsigned long) pbm->pbm_regs;
279 unsigned long imap_reg, iclr_reg, int_ctrlr;
280 unsigned int virt_irq;
281 int fixup;
282 u64 val;
283
284 imap_reg = cregs + (0x001000UL + (devino * 0x08UL));
285 iclr_reg = cregs + (0x001400UL + (devino * 0x08UL));
286
287 /* XXX iterate amongst the 4 IRQ controllers XXX */
288 int_ctrlr = (1UL << 6);
289
290 val = upa_readq(imap_reg);
291 val |= (1UL << 63) | int_ctrlr;
292 upa_writeq(val, imap_reg);
293
294 fixup = ((pbm->portid << 6) | devino) - int_ctrlr;
295
296 virt_irq = build_irq(fixup, iclr_reg, imap_reg);
297 if (!virt_irq)
298 return -ENOMEM;
299
300 upa_writeq(EVENT_QUEUE_CONTROL_SET_EN,
301 pbm->pbm_regs + EVENT_QUEUE_CONTROL_SET(msiqid));
302
303 return virt_irq;
304}
305
306static const struct sparc64_msiq_ops pci_fire_msiq_ops = {
307 .get_head = pci_fire_get_head,
308 .dequeue_msi = pci_fire_dequeue_msi,
309 .set_head = pci_fire_set_head,
310 .msi_setup = pci_fire_msi_setup,
311 .msi_teardown = pci_fire_msi_teardown,
312 .msiq_alloc = pci_fire_msiq_alloc,
313 .msiq_free = pci_fire_msiq_free,
314 .msiq_build_irq = pci_fire_msiq_build_irq,
315};
316
317static void pci_fire_msi_init(struct pci_pbm_info *pbm)
318{
319 sparc64_pbm_msi_init(pbm, &pci_fire_msiq_ops);
320}
321#else /* CONFIG_PCI_MSI */
322static void pci_fire_msi_init(struct pci_pbm_info *pbm)
323{
324}
325#endif /* !(CONFIG_PCI_MSI) */
326
327/* Based at pbm->controller_regs */
328#define FIRE_PARITY_CONTROL 0x470010UL
329#define FIRE_PARITY_ENAB 0x8000000000000000UL
330#define FIRE_FATAL_RESET_CTL 0x471028UL
331#define FIRE_FATAL_RESET_SPARE 0x0000000004000000UL
332#define FIRE_FATAL_RESET_MB 0x0000000002000000UL
333#define FIRE_FATAL_RESET_CPE 0x0000000000008000UL
334#define FIRE_FATAL_RESET_APE 0x0000000000004000UL
335#define FIRE_FATAL_RESET_PIO 0x0000000000000040UL
336#define FIRE_FATAL_RESET_JW 0x0000000000000004UL
337#define FIRE_FATAL_RESET_JI 0x0000000000000002UL
338#define FIRE_FATAL_RESET_JR 0x0000000000000001UL
339#define FIRE_CORE_INTR_ENABLE 0x471800UL
340
341/* Based at pbm->pbm_regs */
342#define FIRE_TLU_CTRL 0x80000UL
343#define FIRE_TLU_CTRL_TIM 0x00000000da000000UL
344#define FIRE_TLU_CTRL_QDET 0x0000000000000100UL
345#define FIRE_TLU_CTRL_CFG 0x0000000000000001UL
346#define FIRE_TLU_DEV_CTRL 0x90008UL
347#define FIRE_TLU_LINK_CTRL 0x90020UL
348#define FIRE_TLU_LINK_CTRL_CLK 0x0000000000000040UL
349#define FIRE_LPU_RESET 0xe2008UL
350#define FIRE_LPU_LLCFG 0xe2200UL
351#define FIRE_LPU_LLCFG_VC0 0x0000000000000100UL
352#define FIRE_LPU_FCTRL_UCTRL 0xe2240UL
353#define FIRE_LPU_FCTRL_UCTRL_N 0x0000000000000002UL
354#define FIRE_LPU_FCTRL_UCTRL_P 0x0000000000000001UL
355#define FIRE_LPU_TXL_FIFOP 0xe2430UL
356#define FIRE_LPU_LTSSM_CFG2 0xe2788UL
357#define FIRE_LPU_LTSSM_CFG3 0xe2790UL
358#define FIRE_LPU_LTSSM_CFG4 0xe2798UL
359#define FIRE_LPU_LTSSM_CFG5 0xe27a0UL
360#define FIRE_DMC_IENAB 0x31800UL
361#define FIRE_DMC_DBG_SEL_A 0x53000UL
362#define FIRE_DMC_DBG_SEL_B 0x53008UL
363#define FIRE_PEC_IENAB 0x51800UL
364
365static void pci_fire_hw_init(struct pci_pbm_info *pbm)
366{
367 u64 val;
368
369 upa_writeq(FIRE_PARITY_ENAB,
370 pbm->controller_regs + FIRE_PARITY_CONTROL);
371
372 upa_writeq((FIRE_FATAL_RESET_SPARE |
373 FIRE_FATAL_RESET_MB |
374 FIRE_FATAL_RESET_CPE |
375 FIRE_FATAL_RESET_APE |
376 FIRE_FATAL_RESET_PIO |
377 FIRE_FATAL_RESET_JW |
378 FIRE_FATAL_RESET_JI |
379 FIRE_FATAL_RESET_JR),
380 pbm->controller_regs + FIRE_FATAL_RESET_CTL);
381
382 upa_writeq(~(u64)0, pbm->controller_regs + FIRE_CORE_INTR_ENABLE);
383
384 val = upa_readq(pbm->pbm_regs + FIRE_TLU_CTRL);
385 val |= (FIRE_TLU_CTRL_TIM |
386 FIRE_TLU_CTRL_QDET |
387 FIRE_TLU_CTRL_CFG);
388 upa_writeq(val, pbm->pbm_regs + FIRE_TLU_CTRL);
389 upa_writeq(0, pbm->pbm_regs + FIRE_TLU_DEV_CTRL);
390 upa_writeq(FIRE_TLU_LINK_CTRL_CLK,
391 pbm->pbm_regs + FIRE_TLU_LINK_CTRL);
392
393 upa_writeq(0, pbm->pbm_regs + FIRE_LPU_RESET);
394 upa_writeq(FIRE_LPU_LLCFG_VC0, pbm->pbm_regs + FIRE_LPU_LLCFG);
395 upa_writeq((FIRE_LPU_FCTRL_UCTRL_N | FIRE_LPU_FCTRL_UCTRL_P),
396 pbm->pbm_regs + FIRE_LPU_FCTRL_UCTRL);
397 upa_writeq(((0xffff << 16) | (0x0000 << 0)),
398 pbm->pbm_regs + FIRE_LPU_TXL_FIFOP);
399 upa_writeq(3000000, pbm->pbm_regs + FIRE_LPU_LTSSM_CFG2);
400 upa_writeq(500000, pbm->pbm_regs + FIRE_LPU_LTSSM_CFG3);
401 upa_writeq((2 << 16) | (140 << 8),
402 pbm->pbm_regs + FIRE_LPU_LTSSM_CFG4);
403 upa_writeq(0, pbm->pbm_regs + FIRE_LPU_LTSSM_CFG5);
404
405 upa_writeq(~(u64)0, pbm->pbm_regs + FIRE_DMC_IENAB);
406 upa_writeq(0, pbm->pbm_regs + FIRE_DMC_DBG_SEL_A);
407 upa_writeq(0, pbm->pbm_regs + FIRE_DMC_DBG_SEL_B);
408
409 upa_writeq(~(u64)0, pbm->pbm_regs + FIRE_PEC_IENAB);
410}
411
412static int __init pci_fire_pbm_init(struct pci_pbm_info *pbm,
413 struct of_device *op, u32 portid)
414{
415 const struct linux_prom64_registers *regs;
416 struct device_node *dp = op->node;
417 int err;
418
419 pbm->numa_node = -1;
420
421 pbm->pci_ops = &sun4u_pci_ops;
422 pbm->config_space_reg_bits = 12;
423
424 pbm->index = pci_num_pbms++;
425
426 pbm->portid = portid;
427 pbm->op = op;
428 pbm->name = dp->full_name;
429
430 regs = of_get_property(dp, "reg", NULL);
431 pbm->pbm_regs = regs[0].phys_addr;
432 pbm->controller_regs = regs[1].phys_addr - 0x410000UL;
433
434 printk("%s: SUN4U PCIE Bus Module\n", pbm->name);
435
436 pci_determine_mem_io_space(pbm);
437
438 pci_get_pbm_props(pbm);
439
440 pci_fire_hw_init(pbm);
441
442 err = pci_fire_pbm_iommu_init(pbm);
443 if (err)
444 return err;
445
446 pci_fire_msi_init(pbm);
447
448 pbm->pci_bus = pci_scan_one_pbm(pbm, &op->dev);
449
450 /* XXX register error interrupt handlers XXX */
451
452 pbm->next = pci_pbm_root;
453 pci_pbm_root = pbm;
454
455 return 0;
456}
457
458static int __devinit fire_probe(struct of_device *op,
459 const struct of_device_id *match)
460{
461 struct device_node *dp = op->node;
462 struct pci_pbm_info *pbm;
463 struct iommu *iommu;
464 u32 portid;
465 int err;
466
467 portid = of_getintprop_default(dp, "portid", 0xff);
468
469 err = -ENOMEM;
470 pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
471 if (!pbm) {
472 printk(KERN_ERR PFX "Cannot allocate pci_pbminfo.\n");
473 goto out_err;
474 }
475
476 iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL);
477 if (!iommu) {
478 printk(KERN_ERR PFX "Cannot allocate PBM iommu.\n");
479 goto out_free_controller;
480 }
481
482 pbm->iommu = iommu;
483
484 err = pci_fire_pbm_init(pbm, op, portid);
485 if (err)
486 goto out_free_iommu;
487
488 dev_set_drvdata(&op->dev, pbm);
489
490 return 0;
491
492out_free_iommu:
493 kfree(pbm->iommu);
494
495out_free_controller:
496 kfree(pbm);
497
498out_err:
499 return err;
500}
501
502static struct of_device_id __initdata fire_match[] = {
503 {
504 .name = "pci",
505 .compatible = "pciex108e,80f0",
506 },
507 {},
508};
509
510static struct of_platform_driver fire_driver = {
511 .name = DRIVER_NAME,
512 .match_table = fire_match,
513 .probe = fire_probe,
514};
515
516static int __init fire_init(void)
517{
518 return of_register_driver(&fire_driver, &of_bus_type);
519}
520
521subsys_initcall(fire_init);
diff --git a/arch/sparc/kernel/pci_impl.h b/arch/sparc/kernel/pci_impl.h
new file mode 100644
index 000000000000..03186824327e
--- /dev/null
+++ b/arch/sparc/kernel/pci_impl.h
@@ -0,0 +1,185 @@
1/* pci_impl.h: Helper definitions for PCI controller support.
2 *
3 * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
4 */
5
6#ifndef PCI_IMPL_H
7#define PCI_IMPL_H
8
9#include <linux/types.h>
10#include <linux/spinlock.h>
11#include <linux/pci.h>
12#include <linux/msi.h>
13#include <linux/of_device.h>
14#include <asm/io.h>
15#include <asm/prom.h>
16#include <asm/iommu.h>
17
18/* The abstraction used here is that there are PCI controllers,
19 * each with one (Sabre) or two (PSYCHO/SCHIZO) PCI bus modules
20 * underneath. Each PCI bus module uses an IOMMU (shared by both
21 * PBMs of a controller, or per-PBM), and if a streaming buffer
22 * is present, each PCI bus module has it's own. (ie. the IOMMU
23 * might be shared between PBMs, the STC is never shared)
24 * Furthermore, each PCI bus module controls it's own autonomous
25 * PCI bus.
26 */
27
28#define PCI_STC_FLUSHFLAG_INIT(STC) \
29 (*((STC)->strbuf_flushflag) = 0UL)
30#define PCI_STC_FLUSHFLAG_SET(STC) \
31 (*((STC)->strbuf_flushflag) != 0UL)
32
33#ifdef CONFIG_PCI_MSI
34struct pci_pbm_info;
35struct sparc64_msiq_ops {
36 int (*get_head)(struct pci_pbm_info *pbm, unsigned long msiqid,
37 unsigned long *head);
38 int (*dequeue_msi)(struct pci_pbm_info *pbm, unsigned long msiqid,
39 unsigned long *head, unsigned long *msi);
40 int (*set_head)(struct pci_pbm_info *pbm, unsigned long msiqid,
41 unsigned long head);
42 int (*msi_setup)(struct pci_pbm_info *pbm, unsigned long msiqid,
43 unsigned long msi, int is_msi64);
44 int (*msi_teardown)(struct pci_pbm_info *pbm, unsigned long msi);
45 int (*msiq_alloc)(struct pci_pbm_info *pbm);
46 void (*msiq_free)(struct pci_pbm_info *pbm);
47 int (*msiq_build_irq)(struct pci_pbm_info *pbm, unsigned long msiqid,
48 unsigned long devino);
49};
50
51extern void sparc64_pbm_msi_init(struct pci_pbm_info *pbm,
52 const struct sparc64_msiq_ops *ops);
53
54struct sparc64_msiq_cookie {
55 struct pci_pbm_info *pbm;
56 unsigned long msiqid;
57};
58#endif
59
60struct pci_pbm_info {
61 struct pci_pbm_info *next;
62 struct pci_pbm_info *sibling;
63 int index;
64
65 /* Physical address base of controller registers. */
66 unsigned long controller_regs;
67
68 /* Physical address base of PBM registers. */
69 unsigned long pbm_regs;
70
71 /* Physical address of DMA sync register, if any. */
72 unsigned long sync_reg;
73
74 /* Opaque 32-bit system bus Port ID. */
75 u32 portid;
76
77 /* Opaque 32-bit handle used for hypervisor calls. */
78 u32 devhandle;
79
80 /* Chipset version information. */
81 int chip_type;
82#define PBM_CHIP_TYPE_SABRE 1
83#define PBM_CHIP_TYPE_PSYCHO 2
84#define PBM_CHIP_TYPE_SCHIZO 3
85#define PBM_CHIP_TYPE_SCHIZO_PLUS 4
86#define PBM_CHIP_TYPE_TOMATILLO 5
87 int chip_version;
88 int chip_revision;
89
90 /* Name used for top-level resources. */
91 char *name;
92
93 /* OBP specific information. */
94 struct of_device *op;
95 u64 ino_bitmap;
96
97 /* PBM I/O and Memory space resources. */
98 struct resource io_space;
99 struct resource mem_space;
100
101 /* Base of PCI Config space, can be per-PBM or shared. */
102 unsigned long config_space;
103
104 /* This will be 12 on PCI-E controllers, 8 elsewhere. */
105 unsigned long config_space_reg_bits;
106
107 unsigned long pci_afsr;
108 unsigned long pci_afar;
109 unsigned long pci_csr;
110
111 /* State of 66MHz capabilities on this PBM. */
112 int is_66mhz_capable;
113 int all_devs_66mhz;
114
115#ifdef CONFIG_PCI_MSI
116 /* MSI info. */
117 u32 msiq_num;
118 u32 msiq_ent_count;
119 u32 msiq_first;
120 u32 msiq_first_devino;
121 u32 msiq_rotor;
122 struct sparc64_msiq_cookie *msiq_irq_cookies;
123 u32 msi_num;
124 u32 msi_first;
125 u32 msi_data_mask;
126 u32 msix_data_width;
127 u64 msi32_start;
128 u64 msi64_start;
129 u32 msi32_len;
130 u32 msi64_len;
131 void *msi_queues;
132 unsigned long *msi_bitmap;
133 unsigned int *msi_irq_table;
134 int (*setup_msi_irq)(unsigned int *virt_irq_p, struct pci_dev *pdev,
135 struct msi_desc *entry);
136 void (*teardown_msi_irq)(unsigned int virt_irq, struct pci_dev *pdev);
137 const struct sparc64_msiq_ops *msi_ops;
138#endif /* !(CONFIG_PCI_MSI) */
139
140 /* This PBM's streaming buffer. */
141 struct strbuf stc;
142
143 /* IOMMU state, potentially shared by both PBM segments. */
144 struct iommu *iommu;
145
146 /* Now things for the actual PCI bus probes. */
147 unsigned int pci_first_busno;
148 unsigned int pci_last_busno;
149 struct pci_bus *pci_bus;
150 struct pci_ops *pci_ops;
151
152 int numa_node;
153};
154
155extern struct pci_pbm_info *pci_pbm_root;
156
157extern int pci_num_pbms;
158
159/* PCI bus scanning and fixup support. */
160extern void pci_get_pbm_props(struct pci_pbm_info *pbm);
161extern struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm,
162 struct device *parent);
163extern void pci_determine_mem_io_space(struct pci_pbm_info *pbm);
164
165/* Error reporting support. */
166extern void pci_scan_for_target_abort(struct pci_pbm_info *, struct pci_bus *);
167extern void pci_scan_for_master_abort(struct pci_pbm_info *, struct pci_bus *);
168extern void pci_scan_for_parity_error(struct pci_pbm_info *, struct pci_bus *);
169
170/* Configuration space access. */
171extern void pci_config_read8(u8 *addr, u8 *ret);
172extern void pci_config_read16(u16 *addr, u16 *ret);
173extern void pci_config_read32(u32 *addr, u32 *ret);
174extern void pci_config_write8(u8 *addr, u8 val);
175extern void pci_config_write16(u16 *addr, u16 val);
176extern void pci_config_write32(u32 *addr, u32 val);
177
178extern struct pci_ops sun4u_pci_ops;
179extern struct pci_ops sun4v_pci_ops;
180
181extern volatile int pci_poke_in_progress;
182extern volatile int pci_poke_cpu;
183extern volatile int pci_poke_faulted;
184
185#endif /* !(PCI_IMPL_H) */
diff --git a/arch/sparc/kernel/pci_msi.c b/arch/sparc/kernel/pci_msi.c
new file mode 100644
index 000000000000..2e680f34f727
--- /dev/null
+++ b/arch/sparc/kernel/pci_msi.c
@@ -0,0 +1,447 @@
1/* pci_msi.c: Sparc64 MSI support common layer.
2 *
3 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
4 */
5#include <linux/kernel.h>
6#include <linux/interrupt.h>
7#include <linux/irq.h>
8
9#include "pci_impl.h"
10
11static irqreturn_t sparc64_msiq_interrupt(int irq, void *cookie)
12{
13 struct sparc64_msiq_cookie *msiq_cookie = cookie;
14 struct pci_pbm_info *pbm = msiq_cookie->pbm;
15 unsigned long msiqid = msiq_cookie->msiqid;
16 const struct sparc64_msiq_ops *ops;
17 unsigned long orig_head, head;
18 int err;
19
20 ops = pbm->msi_ops;
21
22 err = ops->get_head(pbm, msiqid, &head);
23 if (unlikely(err < 0))
24 goto err_get_head;
25
26 orig_head = head;
27 for (;;) {
28 unsigned long msi;
29
30 err = ops->dequeue_msi(pbm, msiqid, &head, &msi);
31 if (likely(err > 0)) {
32 struct irq_desc *desc;
33 unsigned int virt_irq;
34
35 virt_irq = pbm->msi_irq_table[msi - pbm->msi_first];
36 desc = irq_desc + virt_irq;
37
38 desc->handle_irq(virt_irq, desc);
39 }
40
41 if (unlikely(err < 0))
42 goto err_dequeue;
43
44 if (err == 0)
45 break;
46 }
47 if (likely(head != orig_head)) {
48 err = ops->set_head(pbm, msiqid, head);
49 if (unlikely(err < 0))
50 goto err_set_head;
51 }
52 return IRQ_HANDLED;
53
54err_get_head:
55 printk(KERN_EMERG "MSI: Get head on msiqid[%lu] gives error %d\n",
56 msiqid, err);
57 goto err_out;
58
59err_dequeue:
60 printk(KERN_EMERG "MSI: Dequeue head[%lu] from msiqid[%lu] "
61 "gives error %d\n",
62 head, msiqid, err);
63 goto err_out;
64
65err_set_head:
66 printk(KERN_EMERG "MSI: Set head[%lu] on msiqid[%lu] "
67 "gives error %d\n",
68 head, msiqid, err);
69 goto err_out;
70
71err_out:
72 return IRQ_NONE;
73}
74
75static u32 pick_msiq(struct pci_pbm_info *pbm)
76{
77 static DEFINE_SPINLOCK(rotor_lock);
78 unsigned long flags;
79 u32 ret, rotor;
80
81 spin_lock_irqsave(&rotor_lock, flags);
82
83 rotor = pbm->msiq_rotor;
84 ret = pbm->msiq_first + rotor;
85
86 if (++rotor >= pbm->msiq_num)
87 rotor = 0;
88 pbm->msiq_rotor = rotor;
89
90 spin_unlock_irqrestore(&rotor_lock, flags);
91
92 return ret;
93}
94
95
96static int alloc_msi(struct pci_pbm_info *pbm)
97{
98 int i;
99
100 for (i = 0; i < pbm->msi_num; i++) {
101 if (!test_and_set_bit(i, pbm->msi_bitmap))
102 return i + pbm->msi_first;
103 }
104
105 return -ENOENT;
106}
107
108static void free_msi(struct pci_pbm_info *pbm, int msi_num)
109{
110 msi_num -= pbm->msi_first;
111 clear_bit(msi_num, pbm->msi_bitmap);
112}
113
114static struct irq_chip msi_irq = {
115 .typename = "PCI-MSI",
116 .mask = mask_msi_irq,
117 .unmask = unmask_msi_irq,
118 .enable = unmask_msi_irq,
119 .disable = mask_msi_irq,
120 /* XXX affinity XXX */
121};
122
123static int sparc64_setup_msi_irq(unsigned int *virt_irq_p,
124 struct pci_dev *pdev,
125 struct msi_desc *entry)
126{
127 struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
128 const struct sparc64_msiq_ops *ops = pbm->msi_ops;
129 struct msi_msg msg;
130 int msi, err;
131 u32 msiqid;
132
133 *virt_irq_p = virt_irq_alloc(0, 0);
134 err = -ENOMEM;
135 if (!*virt_irq_p)
136 goto out_err;
137
138 set_irq_chip_and_handler_name(*virt_irq_p, &msi_irq,
139 handle_simple_irq, "MSI");
140
141 err = alloc_msi(pbm);
142 if (unlikely(err < 0))
143 goto out_virt_irq_free;
144
145 msi = err;
146
147 msiqid = pick_msiq(pbm);
148
149 err = ops->msi_setup(pbm, msiqid, msi,
150 (entry->msi_attrib.is_64 ? 1 : 0));
151 if (err)
152 goto out_msi_free;
153
154 pbm->msi_irq_table[msi - pbm->msi_first] = *virt_irq_p;
155
156 if (entry->msi_attrib.is_64) {
157 msg.address_hi = pbm->msi64_start >> 32;
158 msg.address_lo = pbm->msi64_start & 0xffffffff;
159 } else {
160 msg.address_hi = 0;
161 msg.address_lo = pbm->msi32_start;
162 }
163 msg.data = msi;
164
165 set_irq_msi(*virt_irq_p, entry);
166 write_msi_msg(*virt_irq_p, &msg);
167
168 return 0;
169
170out_msi_free:
171 free_msi(pbm, msi);
172
173out_virt_irq_free:
174 set_irq_chip(*virt_irq_p, NULL);
175 virt_irq_free(*virt_irq_p);
176 *virt_irq_p = 0;
177
178out_err:
179 return err;
180}
181
182static void sparc64_teardown_msi_irq(unsigned int virt_irq,
183 struct pci_dev *pdev)
184{
185 struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
186 const struct sparc64_msiq_ops *ops = pbm->msi_ops;
187 unsigned int msi_num;
188 int i, err;
189
190 for (i = 0; i < pbm->msi_num; i++) {
191 if (pbm->msi_irq_table[i] == virt_irq)
192 break;
193 }
194 if (i >= pbm->msi_num) {
195 printk(KERN_ERR "%s: teardown: No MSI for irq %u\n",
196 pbm->name, virt_irq);
197 return;
198 }
199
200 msi_num = pbm->msi_first + i;
201 pbm->msi_irq_table[i] = ~0U;
202
203 err = ops->msi_teardown(pbm, msi_num);
204 if (err) {
205 printk(KERN_ERR "%s: teardown: ops->teardown() on MSI %u, "
206 "irq %u, gives error %d\n",
207 pbm->name, msi_num, virt_irq, err);
208 return;
209 }
210
211 free_msi(pbm, msi_num);
212
213 set_irq_chip(virt_irq, NULL);
214 virt_irq_free(virt_irq);
215}
216
217static int msi_bitmap_alloc(struct pci_pbm_info *pbm)
218{
219 unsigned long size, bits_per_ulong;
220
221 bits_per_ulong = sizeof(unsigned long) * 8;
222 size = (pbm->msi_num + (bits_per_ulong - 1)) & ~(bits_per_ulong - 1);
223 size /= 8;
224 BUG_ON(size % sizeof(unsigned long));
225
226 pbm->msi_bitmap = kzalloc(size, GFP_KERNEL);
227 if (!pbm->msi_bitmap)
228 return -ENOMEM;
229
230 return 0;
231}
232
233static void msi_bitmap_free(struct pci_pbm_info *pbm)
234{
235 kfree(pbm->msi_bitmap);
236 pbm->msi_bitmap = NULL;
237}
238
239static int msi_table_alloc(struct pci_pbm_info *pbm)
240{
241 int size, i;
242
243 size = pbm->msiq_num * sizeof(struct sparc64_msiq_cookie);
244 pbm->msiq_irq_cookies = kzalloc(size, GFP_KERNEL);
245 if (!pbm->msiq_irq_cookies)
246 return -ENOMEM;
247
248 for (i = 0; i < pbm->msiq_num; i++) {
249 struct sparc64_msiq_cookie *p;
250
251 p = &pbm->msiq_irq_cookies[i];
252 p->pbm = pbm;
253 p->msiqid = pbm->msiq_first + i;
254 }
255
256 size = pbm->msi_num * sizeof(unsigned int);
257 pbm->msi_irq_table = kzalloc(size, GFP_KERNEL);
258 if (!pbm->msi_irq_table) {
259 kfree(pbm->msiq_irq_cookies);
260 pbm->msiq_irq_cookies = NULL;
261 return -ENOMEM;
262 }
263
264 return 0;
265}
266
267static void msi_table_free(struct pci_pbm_info *pbm)
268{
269 kfree(pbm->msiq_irq_cookies);
270 pbm->msiq_irq_cookies = NULL;
271
272 kfree(pbm->msi_irq_table);
273 pbm->msi_irq_table = NULL;
274}
275
276static int bringup_one_msi_queue(struct pci_pbm_info *pbm,
277 const struct sparc64_msiq_ops *ops,
278 unsigned long msiqid,
279 unsigned long devino)
280{
281 int irq = ops->msiq_build_irq(pbm, msiqid, devino);
282 int err, nid;
283
284 if (irq < 0)
285 return irq;
286
287 nid = pbm->numa_node;
288 if (nid != -1) {
289 cpumask_t numa_mask = node_to_cpumask(nid);
290
291 irq_set_affinity(irq, numa_mask);
292 }
293 err = request_irq(irq, sparc64_msiq_interrupt, 0,
294 "MSIQ",
295 &pbm->msiq_irq_cookies[msiqid - pbm->msiq_first]);
296 if (err)
297 return err;
298
299 return 0;
300}
301
302static int sparc64_bringup_msi_queues(struct pci_pbm_info *pbm,
303 const struct sparc64_msiq_ops *ops)
304{
305 int i;
306
307 for (i = 0; i < pbm->msiq_num; i++) {
308 unsigned long msiqid = i + pbm->msiq_first;
309 unsigned long devino = i + pbm->msiq_first_devino;
310 int err;
311
312 err = bringup_one_msi_queue(pbm, ops, msiqid, devino);
313 if (err)
314 return err;
315 }
316
317 return 0;
318}
319
320void sparc64_pbm_msi_init(struct pci_pbm_info *pbm,
321 const struct sparc64_msiq_ops *ops)
322{
323 const u32 *val;
324 int len;
325
326 val = of_get_property(pbm->op->node, "#msi-eqs", &len);
327 if (!val || len != 4)
328 goto no_msi;
329 pbm->msiq_num = *val;
330 if (pbm->msiq_num) {
331 const struct msiq_prop {
332 u32 first_msiq;
333 u32 num_msiq;
334 u32 first_devino;
335 } *mqp;
336 const struct msi_range_prop {
337 u32 first_msi;
338 u32 num_msi;
339 } *mrng;
340 const struct addr_range_prop {
341 u32 msi32_high;
342 u32 msi32_low;
343 u32 msi32_len;
344 u32 msi64_high;
345 u32 msi64_low;
346 u32 msi64_len;
347 } *arng;
348
349 val = of_get_property(pbm->op->node, "msi-eq-size", &len);
350 if (!val || len != 4)
351 goto no_msi;
352
353 pbm->msiq_ent_count = *val;
354
355 mqp = of_get_property(pbm->op->node,
356 "msi-eq-to-devino", &len);
357 if (!mqp)
358 mqp = of_get_property(pbm->op->node,
359 "msi-eq-devino", &len);
360 if (!mqp || len != sizeof(struct msiq_prop))
361 goto no_msi;
362
363 pbm->msiq_first = mqp->first_msiq;
364 pbm->msiq_first_devino = mqp->first_devino;
365
366 val = of_get_property(pbm->op->node, "#msi", &len);
367 if (!val || len != 4)
368 goto no_msi;
369 pbm->msi_num = *val;
370
371 mrng = of_get_property(pbm->op->node, "msi-ranges", &len);
372 if (!mrng || len != sizeof(struct msi_range_prop))
373 goto no_msi;
374 pbm->msi_first = mrng->first_msi;
375
376 val = of_get_property(pbm->op->node, "msi-data-mask", &len);
377 if (!val || len != 4)
378 goto no_msi;
379 pbm->msi_data_mask = *val;
380
381 val = of_get_property(pbm->op->node, "msix-data-width", &len);
382 if (!val || len != 4)
383 goto no_msi;
384 pbm->msix_data_width = *val;
385
386 arng = of_get_property(pbm->op->node, "msi-address-ranges",
387 &len);
388 if (!arng || len != sizeof(struct addr_range_prop))
389 goto no_msi;
390 pbm->msi32_start = ((u64)arng->msi32_high << 32) |
391 (u64) arng->msi32_low;
392 pbm->msi64_start = ((u64)arng->msi64_high << 32) |
393 (u64) arng->msi64_low;
394 pbm->msi32_len = arng->msi32_len;
395 pbm->msi64_len = arng->msi64_len;
396
397 if (msi_bitmap_alloc(pbm))
398 goto no_msi;
399
400 if (msi_table_alloc(pbm)) {
401 msi_bitmap_free(pbm);
402 goto no_msi;
403 }
404
405 if (ops->msiq_alloc(pbm)) {
406 msi_table_free(pbm);
407 msi_bitmap_free(pbm);
408 goto no_msi;
409 }
410
411 if (sparc64_bringup_msi_queues(pbm, ops)) {
412 ops->msiq_free(pbm);
413 msi_table_free(pbm);
414 msi_bitmap_free(pbm);
415 goto no_msi;
416 }
417
418 printk(KERN_INFO "%s: MSI Queue first[%u] num[%u] count[%u] "
419 "devino[0x%x]\n",
420 pbm->name,
421 pbm->msiq_first, pbm->msiq_num,
422 pbm->msiq_ent_count,
423 pbm->msiq_first_devino);
424 printk(KERN_INFO "%s: MSI first[%u] num[%u] mask[0x%x] "
425 "width[%u]\n",
426 pbm->name,
427 pbm->msi_first, pbm->msi_num, pbm->msi_data_mask,
428 pbm->msix_data_width);
429 printk(KERN_INFO "%s: MSI addr32[0x%lx:0x%x] "
430 "addr64[0x%lx:0x%x]\n",
431 pbm->name,
432 pbm->msi32_start, pbm->msi32_len,
433 pbm->msi64_start, pbm->msi64_len);
434 printk(KERN_INFO "%s: MSI queues at RA [%016lx]\n",
435 pbm->name,
436 __pa(pbm->msi_queues));
437
438 pbm->msi_ops = ops;
439 pbm->setup_msi_irq = sparc64_setup_msi_irq;
440 pbm->teardown_msi_irq = sparc64_teardown_msi_irq;
441 }
442 return;
443
444no_msi:
445 pbm->msiq_num = 0;
446 printk(KERN_INFO "%s: No MSI support.\n", pbm->name);
447}
diff --git a/arch/sparc/kernel/pci_psycho.c b/arch/sparc/kernel/pci_psycho.c
new file mode 100644
index 000000000000..dfb3ec892987
--- /dev/null
+++ b/arch/sparc/kernel/pci_psycho.c
@@ -0,0 +1,618 @@
1/* pci_psycho.c: PSYCHO/U2P specific PCI controller support.
2 *
3 * Copyright (C) 1997, 1998, 1999, 2007 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1998, 1999 Eddie C. Dost (ecd@skynet.be)
5 * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
6 */
7
8#include <linux/kernel.h>
9#include <linux/types.h>
10#include <linux/pci.h>
11#include <linux/init.h>
12#include <linux/slab.h>
13#include <linux/interrupt.h>
14#include <linux/of_device.h>
15
16#include <asm/iommu.h>
17#include <asm/irq.h>
18#include <asm/starfire.h>
19#include <asm/prom.h>
20#include <asm/upa.h>
21
22#include "pci_impl.h"
23#include "iommu_common.h"
24#include "psycho_common.h"
25
26#define DRIVER_NAME "psycho"
27#define PFX DRIVER_NAME ": "
28
29/* Misc. PSYCHO PCI controller register offsets and definitions. */
30#define PSYCHO_CONTROL 0x0010UL
31#define PSYCHO_CONTROL_IMPL 0xf000000000000000UL /* Implementation of this PSYCHO*/
32#define PSYCHO_CONTROL_VER 0x0f00000000000000UL /* Version of this PSYCHO */
33#define PSYCHO_CONTROL_MID 0x00f8000000000000UL /* UPA Module ID of PSYCHO */
34#define PSYCHO_CONTROL_IGN 0x0007c00000000000UL /* Interrupt Group Number */
35#define PSYCHO_CONTROL_RESV 0x00003ffffffffff0UL /* Reserved */
36#define PSYCHO_CONTROL_APCKEN 0x0000000000000008UL /* Address Parity Check Enable */
37#define PSYCHO_CONTROL_APERR 0x0000000000000004UL /* Incoming System Addr Parerr */
38#define PSYCHO_CONTROL_IAP 0x0000000000000002UL /* Invert UPA Parity */
39#define PSYCHO_CONTROL_MODE 0x0000000000000001UL /* PSYCHO clock mode */
40#define PSYCHO_PCIA_CTRL 0x2000UL
41#define PSYCHO_PCIB_CTRL 0x4000UL
42#define PSYCHO_PCICTRL_RESV1 0xfffffff000000000UL /* Reserved */
43#define PSYCHO_PCICTRL_SBH_ERR 0x0000000800000000UL /* Streaming byte hole error */
44#define PSYCHO_PCICTRL_SERR 0x0000000400000000UL /* SERR signal asserted */
45#define PSYCHO_PCICTRL_SPEED 0x0000000200000000UL /* PCI speed (1 is U2P clock) */
46#define PSYCHO_PCICTRL_RESV2 0x00000001ffc00000UL /* Reserved */
47#define PSYCHO_PCICTRL_ARB_PARK 0x0000000000200000UL /* PCI arbitration parking */
48#define PSYCHO_PCICTRL_RESV3 0x00000000001ff800UL /* Reserved */
49#define PSYCHO_PCICTRL_SBH_INT 0x0000000000000400UL /* Streaming byte hole int enab */
50#define PSYCHO_PCICTRL_WEN 0x0000000000000200UL /* Power Mgmt Wake Enable */
51#define PSYCHO_PCICTRL_EEN 0x0000000000000100UL /* PCI Error Interrupt Enable */
52#define PSYCHO_PCICTRL_RESV4 0x00000000000000c0UL /* Reserved */
53#define PSYCHO_PCICTRL_AEN 0x000000000000003fUL /* PCI DVMA Arbitration Enable */
54
55/* PSYCHO error handling support. */
56
57/* Helper function of IOMMU error checking, which checks out
58 * the state of the streaming buffers. The IOMMU lock is
59 * held when this is called.
60 *
61 * For the PCI error case we know which PBM (and thus which
62 * streaming buffer) caused the error, but for the uncorrectable
63 * error case we do not. So we always check both streaming caches.
64 */
65#define PSYCHO_STRBUF_CONTROL_A 0x2800UL
66#define PSYCHO_STRBUF_CONTROL_B 0x4800UL
67#define PSYCHO_STRBUF_CTRL_LPTR 0x00000000000000f0UL /* LRU Lock Pointer */
68#define PSYCHO_STRBUF_CTRL_LENAB 0x0000000000000008UL /* LRU Lock Enable */
69#define PSYCHO_STRBUF_CTRL_RRDIS 0x0000000000000004UL /* Rerun Disable */
70#define PSYCHO_STRBUF_CTRL_DENAB 0x0000000000000002UL /* Diagnostic Mode Enable */
71#define PSYCHO_STRBUF_CTRL_ENAB 0x0000000000000001UL /* Streaming Buffer Enable */
72#define PSYCHO_STRBUF_FLUSH_A 0x2808UL
73#define PSYCHO_STRBUF_FLUSH_B 0x4808UL
74#define PSYCHO_STRBUF_FSYNC_A 0x2810UL
75#define PSYCHO_STRBUF_FSYNC_B 0x4810UL
76#define PSYCHO_STC_DATA_A 0xb000UL
77#define PSYCHO_STC_DATA_B 0xc000UL
78#define PSYCHO_STC_ERR_A 0xb400UL
79#define PSYCHO_STC_ERR_B 0xc400UL
80#define PSYCHO_STC_TAG_A 0xb800UL
81#define PSYCHO_STC_TAG_B 0xc800UL
82#define PSYCHO_STC_LINE_A 0xb900UL
83#define PSYCHO_STC_LINE_B 0xc900UL
84
85/* When an Uncorrectable Error or a PCI Error happens, we
86 * interrogate the IOMMU state to see if it is the cause.
87 */
88#define PSYCHO_IOMMU_CONTROL 0x0200UL
89#define PSYCHO_IOMMU_CTRL_RESV 0xfffffffff9000000UL /* Reserved */
90#define PSYCHO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status */
91#define PSYCHO_IOMMU_CTRL_XLTEERR 0x0000000001000000UL /* Translation Error encountered */
92#define PSYCHO_IOMMU_CTRL_LCKEN 0x0000000000800000UL /* Enable translation locking */
93#define PSYCHO_IOMMU_CTRL_LCKPTR 0x0000000000780000UL /* Translation lock pointer */
94#define PSYCHO_IOMMU_CTRL_TSBSZ 0x0000000000070000UL /* TSB Size */
95#define PSYCHO_IOMMU_TSBSZ_1K 0x0000000000000000UL /* TSB Table 1024 8-byte entries */
96#define PSYCHO_IOMMU_TSBSZ_2K 0x0000000000010000UL /* TSB Table 2048 8-byte entries */
97#define PSYCHO_IOMMU_TSBSZ_4K 0x0000000000020000UL /* TSB Table 4096 8-byte entries */
98#define PSYCHO_IOMMU_TSBSZ_8K 0x0000000000030000UL /* TSB Table 8192 8-byte entries */
99#define PSYCHO_IOMMU_TSBSZ_16K 0x0000000000040000UL /* TSB Table 16k 8-byte entries */
100#define PSYCHO_IOMMU_TSBSZ_32K 0x0000000000050000UL /* TSB Table 32k 8-byte entries */
101#define PSYCHO_IOMMU_TSBSZ_64K 0x0000000000060000UL /* TSB Table 64k 8-byte entries */
102#define PSYCHO_IOMMU_TSBSZ_128K 0x0000000000070000UL /* TSB Table 128k 8-byte entries */
103#define PSYCHO_IOMMU_CTRL_RESV2 0x000000000000fff8UL /* Reserved */
104#define PSYCHO_IOMMU_CTRL_TBWSZ 0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */
105#define PSYCHO_IOMMU_CTRL_DENAB 0x0000000000000002UL /* Diagnostic mode enable */
106#define PSYCHO_IOMMU_CTRL_ENAB 0x0000000000000001UL /* IOMMU Enable */
107#define PSYCHO_IOMMU_TSBBASE 0x0208UL
108#define PSYCHO_IOMMU_FLUSH 0x0210UL
109#define PSYCHO_IOMMU_TAG 0xa580UL
110#define PSYCHO_IOMMU_DATA 0xa600UL
111
112/* Uncorrectable Errors. Cause of the error and the address are
113 * recorded in the UE_AFSR and UE_AFAR of PSYCHO. They are errors
114 * relating to UPA interface transactions.
115 */
116#define PSYCHO_UE_AFSR 0x0030UL
117#define PSYCHO_UEAFSR_PPIO 0x8000000000000000UL /* Primary PIO is cause */
118#define PSYCHO_UEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read is cause */
119#define PSYCHO_UEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write is cause */
120#define PSYCHO_UEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO is cause */
121#define PSYCHO_UEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read is cause */
122#define PSYCHO_UEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write is cause*/
123#define PSYCHO_UEAFSR_RESV1 0x03ff000000000000UL /* Reserved */
124#define PSYCHO_UEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask of failed transfer */
125#define PSYCHO_UEAFSR_DOFF 0x00000000e0000000UL /* Doubleword Offset */
126#define PSYCHO_UEAFSR_MID 0x000000001f000000UL /* UPA MID causing the fault */
127#define PSYCHO_UEAFSR_BLK 0x0000000000800000UL /* Trans was block operation */
128#define PSYCHO_UEAFSR_RESV2 0x00000000007fffffUL /* Reserved */
129#define PSYCHO_UE_AFAR 0x0038UL
130
131static irqreturn_t psycho_ue_intr(int irq, void *dev_id)
132{
133 struct pci_pbm_info *pbm = dev_id;
134 unsigned long afsr_reg = pbm->controller_regs + PSYCHO_UE_AFSR;
135 unsigned long afar_reg = pbm->controller_regs + PSYCHO_UE_AFAR;
136 unsigned long afsr, afar, error_bits;
137 int reported;
138
139 /* Latch uncorrectable error status. */
140 afar = upa_readq(afar_reg);
141 afsr = upa_readq(afsr_reg);
142
143 /* Clear the primary/secondary error status bits. */
144 error_bits = afsr &
145 (PSYCHO_UEAFSR_PPIO | PSYCHO_UEAFSR_PDRD | PSYCHO_UEAFSR_PDWR |
146 PSYCHO_UEAFSR_SPIO | PSYCHO_UEAFSR_SDRD | PSYCHO_UEAFSR_SDWR);
147 if (!error_bits)
148 return IRQ_NONE;
149 upa_writeq(error_bits, afsr_reg);
150
151 /* Log the error. */
152 printk("%s: Uncorrectable Error, primary error type[%s]\n",
153 pbm->name,
154 (((error_bits & PSYCHO_UEAFSR_PPIO) ?
155 "PIO" :
156 ((error_bits & PSYCHO_UEAFSR_PDRD) ?
157 "DMA Read" :
158 ((error_bits & PSYCHO_UEAFSR_PDWR) ?
159 "DMA Write" : "???")))));
160 printk("%s: bytemask[%04lx] dword_offset[%lx] UPA_MID[%02lx] was_block(%d)\n",
161 pbm->name,
162 (afsr & PSYCHO_UEAFSR_BMSK) >> 32UL,
163 (afsr & PSYCHO_UEAFSR_DOFF) >> 29UL,
164 (afsr & PSYCHO_UEAFSR_MID) >> 24UL,
165 ((afsr & PSYCHO_UEAFSR_BLK) ? 1 : 0));
166 printk("%s: UE AFAR [%016lx]\n", pbm->name, afar);
167 printk("%s: UE Secondary errors [", pbm->name);
168 reported = 0;
169 if (afsr & PSYCHO_UEAFSR_SPIO) {
170 reported++;
171 printk("(PIO)");
172 }
173 if (afsr & PSYCHO_UEAFSR_SDRD) {
174 reported++;
175 printk("(DMA Read)");
176 }
177 if (afsr & PSYCHO_UEAFSR_SDWR) {
178 reported++;
179 printk("(DMA Write)");
180 }
181 if (!reported)
182 printk("(none)");
183 printk("]\n");
184
185 /* Interrogate both IOMMUs for error status. */
186 psycho_check_iommu_error(pbm, afsr, afar, UE_ERR);
187 if (pbm->sibling)
188 psycho_check_iommu_error(pbm->sibling, afsr, afar, UE_ERR);
189
190 return IRQ_HANDLED;
191}
192
193/* Correctable Errors. */
194#define PSYCHO_CE_AFSR 0x0040UL
195#define PSYCHO_CEAFSR_PPIO 0x8000000000000000UL /* Primary PIO is cause */
196#define PSYCHO_CEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read is cause */
197#define PSYCHO_CEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write is cause */
198#define PSYCHO_CEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO is cause */
199#define PSYCHO_CEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read is cause */
200#define PSYCHO_CEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write is cause*/
201#define PSYCHO_CEAFSR_RESV1 0x0300000000000000UL /* Reserved */
202#define PSYCHO_CEAFSR_ESYND 0x00ff000000000000UL /* Syndrome Bits */
203#define PSYCHO_CEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask of failed transfer */
204#define PSYCHO_CEAFSR_DOFF 0x00000000e0000000UL /* Double Offset */
205#define PSYCHO_CEAFSR_MID 0x000000001f000000UL /* UPA MID causing the fault */
206#define PSYCHO_CEAFSR_BLK 0x0000000000800000UL /* Trans was block operation */
207#define PSYCHO_CEAFSR_RESV2 0x00000000007fffffUL /* Reserved */
208#define PSYCHO_CE_AFAR 0x0040UL
209
210static irqreturn_t psycho_ce_intr(int irq, void *dev_id)
211{
212 struct pci_pbm_info *pbm = dev_id;
213 unsigned long afsr_reg = pbm->controller_regs + PSYCHO_CE_AFSR;
214 unsigned long afar_reg = pbm->controller_regs + PSYCHO_CE_AFAR;
215 unsigned long afsr, afar, error_bits;
216 int reported;
217
218 /* Latch error status. */
219 afar = upa_readq(afar_reg);
220 afsr = upa_readq(afsr_reg);
221
222 /* Clear primary/secondary error status bits. */
223 error_bits = afsr &
224 (PSYCHO_CEAFSR_PPIO | PSYCHO_CEAFSR_PDRD | PSYCHO_CEAFSR_PDWR |
225 PSYCHO_CEAFSR_SPIO | PSYCHO_CEAFSR_SDRD | PSYCHO_CEAFSR_SDWR);
226 if (!error_bits)
227 return IRQ_NONE;
228 upa_writeq(error_bits, afsr_reg);
229
230 /* Log the error. */
231 printk("%s: Correctable Error, primary error type[%s]\n",
232 pbm->name,
233 (((error_bits & PSYCHO_CEAFSR_PPIO) ?
234 "PIO" :
235 ((error_bits & PSYCHO_CEAFSR_PDRD) ?
236 "DMA Read" :
237 ((error_bits & PSYCHO_CEAFSR_PDWR) ?
238 "DMA Write" : "???")))));
239
240 /* XXX Use syndrome and afar to print out module string just like
241 * XXX UDB CE trap handler does... -DaveM
242 */
243 printk("%s: syndrome[%02lx] bytemask[%04lx] dword_offset[%lx] "
244 "UPA_MID[%02lx] was_block(%d)\n",
245 pbm->name,
246 (afsr & PSYCHO_CEAFSR_ESYND) >> 48UL,
247 (afsr & PSYCHO_CEAFSR_BMSK) >> 32UL,
248 (afsr & PSYCHO_CEAFSR_DOFF) >> 29UL,
249 (afsr & PSYCHO_CEAFSR_MID) >> 24UL,
250 ((afsr & PSYCHO_CEAFSR_BLK) ? 1 : 0));
251 printk("%s: CE AFAR [%016lx]\n", pbm->name, afar);
252 printk("%s: CE Secondary errors [", pbm->name);
253 reported = 0;
254 if (afsr & PSYCHO_CEAFSR_SPIO) {
255 reported++;
256 printk("(PIO)");
257 }
258 if (afsr & PSYCHO_CEAFSR_SDRD) {
259 reported++;
260 printk("(DMA Read)");
261 }
262 if (afsr & PSYCHO_CEAFSR_SDWR) {
263 reported++;
264 printk("(DMA Write)");
265 }
266 if (!reported)
267 printk("(none)");
268 printk("]\n");
269
270 return IRQ_HANDLED;
271}
272
273/* PCI Errors. They are signalled by the PCI bus module since they
274 * are associated with a specific bus segment.
275 */
276#define PSYCHO_PCI_AFSR_A 0x2010UL
277#define PSYCHO_PCI_AFSR_B 0x4010UL
278#define PSYCHO_PCI_AFAR_A 0x2018UL
279#define PSYCHO_PCI_AFAR_B 0x4018UL
280
281/* XXX What about PowerFail/PowerManagement??? -DaveM */
282#define PSYCHO_ECC_CTRL 0x0020
283#define PSYCHO_ECCCTRL_EE 0x8000000000000000UL /* Enable ECC Checking */
284#define PSYCHO_ECCCTRL_UE 0x4000000000000000UL /* Enable UE Interrupts */
285#define PSYCHO_ECCCTRL_CE 0x2000000000000000UL /* Enable CE INterrupts */
286static void psycho_register_error_handlers(struct pci_pbm_info *pbm)
287{
288 struct of_device *op = of_find_device_by_node(pbm->op->node);
289 unsigned long base = pbm->controller_regs;
290 u64 tmp;
291 int err;
292
293 if (!op)
294 return;
295
296 /* Psycho interrupt property order is:
297 * 0: PCIERR INO for this PBM
298 * 1: UE ERR
299 * 2: CE ERR
300 * 3: POWER FAIL
301 * 4: SPARE HARDWARE
302 * 5: POWER MANAGEMENT
303 */
304
305 if (op->num_irqs < 6)
306 return;
307
308 /* We really mean to ignore the return result here. Two
309 * PCI controller share the same interrupt numbers and
310 * drive the same front-end hardware. Whichever of the
311 * two get in here first will register the IRQ handler
312 * the second will just error out since we do not pass in
313 * IRQF_SHARED.
314 */
315 err = request_irq(op->irqs[1], psycho_ue_intr, IRQF_SHARED,
316 "PSYCHO_UE", pbm);
317 err = request_irq(op->irqs[2], psycho_ce_intr, IRQF_SHARED,
318 "PSYCHO_CE", pbm);
319
320 /* This one, however, ought not to fail. We can just warn
321 * about it since the system can still operate properly even
322 * if this fails.
323 */
324 err = request_irq(op->irqs[0], psycho_pcierr_intr, IRQF_SHARED,
325 "PSYCHO_PCIERR", pbm);
326 if (err)
327 printk(KERN_WARNING "%s: Could not register PCIERR, "
328 "err=%d\n", pbm->name, err);
329
330 /* Enable UE and CE interrupts for controller. */
331 upa_writeq((PSYCHO_ECCCTRL_EE |
332 PSYCHO_ECCCTRL_UE |
333 PSYCHO_ECCCTRL_CE), base + PSYCHO_ECC_CTRL);
334
335 /* Enable PCI Error interrupts and clear error
336 * bits for each PBM.
337 */
338 tmp = upa_readq(base + PSYCHO_PCIA_CTRL);
339 tmp |= (PSYCHO_PCICTRL_SERR |
340 PSYCHO_PCICTRL_SBH_ERR |
341 PSYCHO_PCICTRL_EEN);
342 tmp &= ~(PSYCHO_PCICTRL_SBH_INT);
343 upa_writeq(tmp, base + PSYCHO_PCIA_CTRL);
344
345 tmp = upa_readq(base + PSYCHO_PCIB_CTRL);
346 tmp |= (PSYCHO_PCICTRL_SERR |
347 PSYCHO_PCICTRL_SBH_ERR |
348 PSYCHO_PCICTRL_EEN);
349 tmp &= ~(PSYCHO_PCICTRL_SBH_INT);
350 upa_writeq(tmp, base + PSYCHO_PCIB_CTRL);
351}
352
353/* PSYCHO boot time probing and initialization. */
354static void pbm_config_busmastering(struct pci_pbm_info *pbm)
355{
356 u8 *addr;
357
358 /* Set cache-line size to 64 bytes, this is actually
359 * a nop but I do it for completeness.
360 */
361 addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
362 0, PCI_CACHE_LINE_SIZE);
363 pci_config_write8(addr, 64 / sizeof(u32));
364
365 /* Set PBM latency timer to 64 PCI clocks. */
366 addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
367 0, PCI_LATENCY_TIMER);
368 pci_config_write8(addr, 64);
369}
370
371static void __init psycho_scan_bus(struct pci_pbm_info *pbm,
372 struct device *parent)
373{
374 pbm_config_busmastering(pbm);
375 pbm->is_66mhz_capable = 0;
376 pbm->pci_bus = pci_scan_one_pbm(pbm, parent);
377
378 /* After the PCI bus scan is complete, we can register
379 * the error interrupt handlers.
380 */
381 psycho_register_error_handlers(pbm);
382}
383
384#define PSYCHO_IRQ_RETRY 0x1a00UL
385#define PSYCHO_PCIA_DIAG 0x2020UL
386#define PSYCHO_PCIB_DIAG 0x4020UL
387#define PSYCHO_PCIDIAG_RESV 0xffffffffffffff80UL /* Reserved */
388#define PSYCHO_PCIDIAG_DRETRY 0x0000000000000040UL /* Disable retry limit */
389#define PSYCHO_PCIDIAG_DISYNC 0x0000000000000020UL /* Disable DMA wr / irq sync */
390#define PSYCHO_PCIDIAG_DDWSYNC 0x0000000000000010UL /* Disable DMA wr / PIO rd sync */
391#define PSYCHO_PCIDIAG_IDDPAR 0x0000000000000008UL /* Invert DMA data parity */
392#define PSYCHO_PCIDIAG_IPDPAR 0x0000000000000004UL /* Invert PIO data parity */
393#define PSYCHO_PCIDIAG_IPAPAR 0x0000000000000002UL /* Invert PIO address parity */
394#define PSYCHO_PCIDIAG_LPBACK 0x0000000000000001UL /* Enable loopback mode */
395
396static void psycho_controller_hwinit(struct pci_pbm_info *pbm)
397{
398 u64 tmp;
399
400 upa_writeq(5, pbm->controller_regs + PSYCHO_IRQ_RETRY);
401
402 /* Enable arbiter for all PCI slots. */
403 tmp = upa_readq(pbm->controller_regs + PSYCHO_PCIA_CTRL);
404 tmp |= PSYCHO_PCICTRL_AEN;
405 upa_writeq(tmp, pbm->controller_regs + PSYCHO_PCIA_CTRL);
406
407 tmp = upa_readq(pbm->controller_regs + PSYCHO_PCIB_CTRL);
408 tmp |= PSYCHO_PCICTRL_AEN;
409 upa_writeq(tmp, pbm->controller_regs + PSYCHO_PCIB_CTRL);
410
411 /* Disable DMA write / PIO read synchronization on
412 * both PCI bus segments.
413 * [ U2P Erratum 1243770, STP2223BGA data sheet ]
414 */
415 tmp = upa_readq(pbm->controller_regs + PSYCHO_PCIA_DIAG);
416 tmp |= PSYCHO_PCIDIAG_DDWSYNC;
417 upa_writeq(tmp, pbm->controller_regs + PSYCHO_PCIA_DIAG);
418
419 tmp = upa_readq(pbm->controller_regs + PSYCHO_PCIB_DIAG);
420 tmp |= PSYCHO_PCIDIAG_DDWSYNC;
421 upa_writeq(tmp, pbm->controller_regs + PSYCHO_PCIB_DIAG);
422}
423
424static void psycho_pbm_strbuf_init(struct pci_pbm_info *pbm,
425 int is_pbm_a)
426{
427 unsigned long base = pbm->controller_regs;
428 u64 control;
429
430 if (is_pbm_a) {
431 pbm->stc.strbuf_control = base + PSYCHO_STRBUF_CONTROL_A;
432 pbm->stc.strbuf_pflush = base + PSYCHO_STRBUF_FLUSH_A;
433 pbm->stc.strbuf_fsync = base + PSYCHO_STRBUF_FSYNC_A;
434 pbm->stc.strbuf_err_stat = base + PSYCHO_STC_ERR_A;
435 pbm->stc.strbuf_tag_diag = base + PSYCHO_STC_TAG_A;
436 pbm->stc.strbuf_line_diag= base + PSYCHO_STC_LINE_A;
437 } else {
438 pbm->stc.strbuf_control = base + PSYCHO_STRBUF_CONTROL_B;
439 pbm->stc.strbuf_pflush = base + PSYCHO_STRBUF_FLUSH_B;
440 pbm->stc.strbuf_fsync = base + PSYCHO_STRBUF_FSYNC_B;
441 pbm->stc.strbuf_err_stat = base + PSYCHO_STC_ERR_B;
442 pbm->stc.strbuf_tag_diag = base + PSYCHO_STC_TAG_B;
443 pbm->stc.strbuf_line_diag= base + PSYCHO_STC_LINE_B;
444 }
445 /* PSYCHO's streaming buffer lacks ctx flushing. */
446 pbm->stc.strbuf_ctxflush = 0;
447 pbm->stc.strbuf_ctxmatch_base = 0;
448
449 pbm->stc.strbuf_flushflag = (volatile unsigned long *)
450 ((((unsigned long)&pbm->stc.__flushflag_buf[0])
451 + 63UL)
452 & ~63UL);
453 pbm->stc.strbuf_flushflag_pa = (unsigned long)
454 __pa(pbm->stc.strbuf_flushflag);
455
456 /* Enable the streaming buffer. We have to be careful
457 * just in case OBP left it with LRU locking enabled.
458 *
459 * It is possible to control if PBM will be rerun on
460 * line misses. Currently I just retain whatever setting
461 * OBP left us with. All checks so far show it having
462 * a value of zero.
463 */
464#undef PSYCHO_STRBUF_RERUN_ENABLE
465#undef PSYCHO_STRBUF_RERUN_DISABLE
466 control = upa_readq(pbm->stc.strbuf_control);
467 control |= PSYCHO_STRBUF_CTRL_ENAB;
468 control &= ~(PSYCHO_STRBUF_CTRL_LENAB | PSYCHO_STRBUF_CTRL_LPTR);
469#ifdef PSYCHO_STRBUF_RERUN_ENABLE
470 control &= ~(PSYCHO_STRBUF_CTRL_RRDIS);
471#else
472#ifdef PSYCHO_STRBUF_RERUN_DISABLE
473 control |= PSYCHO_STRBUF_CTRL_RRDIS;
474#endif
475#endif
476 upa_writeq(control, pbm->stc.strbuf_control);
477
478 pbm->stc.strbuf_enabled = 1;
479}
480
481#define PSYCHO_IOSPACE_A 0x002000000UL
482#define PSYCHO_IOSPACE_B 0x002010000UL
483#define PSYCHO_IOSPACE_SIZE 0x00000ffffUL
484#define PSYCHO_MEMSPACE_A 0x100000000UL
485#define PSYCHO_MEMSPACE_B 0x180000000UL
486#define PSYCHO_MEMSPACE_SIZE 0x07fffffffUL
487
488static void __init psycho_pbm_init(struct pci_pbm_info *pbm,
489 struct of_device *op, int is_pbm_a)
490{
491 psycho_pbm_init_common(pbm, op, "PSYCHO", PBM_CHIP_TYPE_PSYCHO);
492 psycho_pbm_strbuf_init(pbm, is_pbm_a);
493 psycho_scan_bus(pbm, &op->dev);
494}
495
496static struct pci_pbm_info * __devinit psycho_find_sibling(u32 upa_portid)
497{
498 struct pci_pbm_info *pbm;
499
500 for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
501 if (pbm->portid == upa_portid)
502 return pbm;
503 }
504 return NULL;
505}
506
507#define PSYCHO_CONFIGSPACE 0x001000000UL
508
509static int __devinit psycho_probe(struct of_device *op,
510 const struct of_device_id *match)
511{
512 const struct linux_prom64_registers *pr_regs;
513 struct device_node *dp = op->node;
514 struct pci_pbm_info *pbm;
515 struct iommu *iommu;
516 int is_pbm_a, err;
517 u32 upa_portid;
518
519 upa_portid = of_getintprop_default(dp, "upa-portid", 0xff);
520
521 err = -ENOMEM;
522 pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
523 if (!pbm) {
524 printk(KERN_ERR PFX "Cannot allocate pci_pbm_info.\n");
525 goto out_err;
526 }
527
528 pbm->sibling = psycho_find_sibling(upa_portid);
529 if (pbm->sibling) {
530 iommu = pbm->sibling->iommu;
531 } else {
532 iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL);
533 if (!iommu) {
534 printk(KERN_ERR PFX "Cannot allocate PBM iommu.\n");
535 goto out_free_controller;
536 }
537 }
538
539 pbm->iommu = iommu;
540 pbm->portid = upa_portid;
541
542 pr_regs = of_get_property(dp, "reg", NULL);
543 err = -ENODEV;
544 if (!pr_regs) {
545 printk(KERN_ERR PFX "No reg property.\n");
546 goto out_free_iommu;
547 }
548
549 is_pbm_a = ((pr_regs[0].phys_addr & 0x6000) == 0x2000);
550
551 pbm->controller_regs = pr_regs[2].phys_addr;
552 pbm->config_space = (pr_regs[2].phys_addr + PSYCHO_CONFIGSPACE);
553
554 if (is_pbm_a) {
555 pbm->pci_afsr = pbm->controller_regs + PSYCHO_PCI_AFSR_A;
556 pbm->pci_afar = pbm->controller_regs + PSYCHO_PCI_AFAR_A;
557 pbm->pci_csr = pbm->controller_regs + PSYCHO_PCIA_CTRL;
558 } else {
559 pbm->pci_afsr = pbm->controller_regs + PSYCHO_PCI_AFSR_B;
560 pbm->pci_afar = pbm->controller_regs + PSYCHO_PCI_AFAR_B;
561 pbm->pci_csr = pbm->controller_regs + PSYCHO_PCIB_CTRL;
562 }
563
564 psycho_controller_hwinit(pbm);
565 if (!pbm->sibling) {
566 err = psycho_iommu_init(pbm, 128, 0xc0000000,
567 0xffffffff, PSYCHO_CONTROL);
568 if (err)
569 goto out_free_iommu;
570
571 /* If necessary, hook us up for starfire IRQ translations. */
572 if (this_is_starfire)
573 starfire_hookup(pbm->portid);
574 }
575
576 psycho_pbm_init(pbm, op, is_pbm_a);
577
578 pbm->next = pci_pbm_root;
579 pci_pbm_root = pbm;
580
581 if (pbm->sibling)
582 pbm->sibling->sibling = pbm;
583
584 dev_set_drvdata(&op->dev, pbm);
585
586 return 0;
587
588out_free_iommu:
589 if (!pbm->sibling)
590 kfree(pbm->iommu);
591
592out_free_controller:
593 kfree(pbm);
594
595out_err:
596 return err;
597}
598
599static struct of_device_id __initdata psycho_match[] = {
600 {
601 .name = "pci",
602 .compatible = "pci108e,8000",
603 },
604 {},
605};
606
607static struct of_platform_driver psycho_driver = {
608 .name = DRIVER_NAME,
609 .match_table = psycho_match,
610 .probe = psycho_probe,
611};
612
613static int __init psycho_init(void)
614{
615 return of_register_driver(&psycho_driver, &of_bus_type);
616}
617
618subsys_initcall(psycho_init);
diff --git a/arch/sparc/kernel/pci_sabre.c b/arch/sparc/kernel/pci_sabre.c
new file mode 100644
index 000000000000..713257b6963c
--- /dev/null
+++ b/arch/sparc/kernel/pci_sabre.c
@@ -0,0 +1,609 @@
1/* pci_sabre.c: Sabre specific PCI controller support.
2 *
3 * Copyright (C) 1997, 1998, 1999, 2007 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1998, 1999 Eddie C. Dost (ecd@skynet.be)
5 * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
6 */
7
8#include <linux/kernel.h>
9#include <linux/types.h>
10#include <linux/pci.h>
11#include <linux/init.h>
12#include <linux/slab.h>
13#include <linux/interrupt.h>
14#include <linux/of_device.h>
15
16#include <asm/apb.h>
17#include <asm/iommu.h>
18#include <asm/irq.h>
19#include <asm/prom.h>
20#include <asm/upa.h>
21
22#include "pci_impl.h"
23#include "iommu_common.h"
24#include "psycho_common.h"
25
26#define DRIVER_NAME "sabre"
27#define PFX DRIVER_NAME ": "
28
29/* SABRE PCI controller register offsets and definitions. */
30#define SABRE_UE_AFSR 0x0030UL
31#define SABRE_UEAFSR_PDRD 0x4000000000000000UL /* Primary PCI DMA Read */
32#define SABRE_UEAFSR_PDWR 0x2000000000000000UL /* Primary PCI DMA Write */
33#define SABRE_UEAFSR_SDRD 0x0800000000000000UL /* Secondary PCI DMA Read */
34#define SABRE_UEAFSR_SDWR 0x0400000000000000UL /* Secondary PCI DMA Write */
35#define SABRE_UEAFSR_SDTE 0x0200000000000000UL /* Secondary DMA Translation Error */
36#define SABRE_UEAFSR_PDTE 0x0100000000000000UL /* Primary DMA Translation Error */
37#define SABRE_UEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask */
38#define SABRE_UEAFSR_OFF 0x00000000e0000000UL /* Offset (AFAR bits [5:3] */
39#define SABRE_UEAFSR_BLK 0x0000000000800000UL /* Was block operation */
40#define SABRE_UECE_AFAR 0x0038UL
41#define SABRE_CE_AFSR 0x0040UL
42#define SABRE_CEAFSR_PDRD 0x4000000000000000UL /* Primary PCI DMA Read */
43#define SABRE_CEAFSR_PDWR 0x2000000000000000UL /* Primary PCI DMA Write */
44#define SABRE_CEAFSR_SDRD 0x0800000000000000UL /* Secondary PCI DMA Read */
45#define SABRE_CEAFSR_SDWR 0x0400000000000000UL /* Secondary PCI DMA Write */
46#define SABRE_CEAFSR_ESYND 0x00ff000000000000UL /* ECC Syndrome */
47#define SABRE_CEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask */
48#define SABRE_CEAFSR_OFF 0x00000000e0000000UL /* Offset */
49#define SABRE_CEAFSR_BLK 0x0000000000800000UL /* Was block operation */
50#define SABRE_UECE_AFAR_ALIAS 0x0048UL /* Aliases to 0x0038 */
51#define SABRE_IOMMU_CONTROL 0x0200UL
52#define SABRE_IOMMUCTRL_ERRSTS 0x0000000006000000UL /* Error status bits */
53#define SABRE_IOMMUCTRL_ERR 0x0000000001000000UL /* Error present in IOTLB */
54#define SABRE_IOMMUCTRL_LCKEN 0x0000000000800000UL /* IOTLB lock enable */
55#define SABRE_IOMMUCTRL_LCKPTR 0x0000000000780000UL /* IOTLB lock pointer */
56#define SABRE_IOMMUCTRL_TSBSZ 0x0000000000070000UL /* TSB Size */
57#define SABRE_IOMMU_TSBSZ_1K 0x0000000000000000
58#define SABRE_IOMMU_TSBSZ_2K 0x0000000000010000
59#define SABRE_IOMMU_TSBSZ_4K 0x0000000000020000
60#define SABRE_IOMMU_TSBSZ_8K 0x0000000000030000
61#define SABRE_IOMMU_TSBSZ_16K 0x0000000000040000
62#define SABRE_IOMMU_TSBSZ_32K 0x0000000000050000
63#define SABRE_IOMMU_TSBSZ_64K 0x0000000000060000
64#define SABRE_IOMMU_TSBSZ_128K 0x0000000000070000
65#define SABRE_IOMMUCTRL_TBWSZ 0x0000000000000004UL /* TSB assumed page size */
66#define SABRE_IOMMUCTRL_DENAB 0x0000000000000002UL /* Diagnostic Mode Enable */
67#define SABRE_IOMMUCTRL_ENAB 0x0000000000000001UL /* IOMMU Enable */
68#define SABRE_IOMMU_TSBBASE 0x0208UL
69#define SABRE_IOMMU_FLUSH 0x0210UL
70#define SABRE_IMAP_A_SLOT0 0x0c00UL
71#define SABRE_IMAP_B_SLOT0 0x0c20UL
72#define SABRE_IMAP_SCSI 0x1000UL
73#define SABRE_IMAP_ETH 0x1008UL
74#define SABRE_IMAP_BPP 0x1010UL
75#define SABRE_IMAP_AU_REC 0x1018UL
76#define SABRE_IMAP_AU_PLAY 0x1020UL
77#define SABRE_IMAP_PFAIL 0x1028UL
78#define SABRE_IMAP_KMS 0x1030UL
79#define SABRE_IMAP_FLPY 0x1038UL
80#define SABRE_IMAP_SHW 0x1040UL
81#define SABRE_IMAP_KBD 0x1048UL
82#define SABRE_IMAP_MS 0x1050UL
83#define SABRE_IMAP_SER 0x1058UL
84#define SABRE_IMAP_UE 0x1070UL
85#define SABRE_IMAP_CE 0x1078UL
86#define SABRE_IMAP_PCIERR 0x1080UL
87#define SABRE_IMAP_GFX 0x1098UL
88#define SABRE_IMAP_EUPA 0x10a0UL
89#define SABRE_ICLR_A_SLOT0 0x1400UL
90#define SABRE_ICLR_B_SLOT0 0x1480UL
91#define SABRE_ICLR_SCSI 0x1800UL
92#define SABRE_ICLR_ETH 0x1808UL
93#define SABRE_ICLR_BPP 0x1810UL
94#define SABRE_ICLR_AU_REC 0x1818UL
95#define SABRE_ICLR_AU_PLAY 0x1820UL
96#define SABRE_ICLR_PFAIL 0x1828UL
97#define SABRE_ICLR_KMS 0x1830UL
98#define SABRE_ICLR_FLPY 0x1838UL
99#define SABRE_ICLR_SHW 0x1840UL
100#define SABRE_ICLR_KBD 0x1848UL
101#define SABRE_ICLR_MS 0x1850UL
102#define SABRE_ICLR_SER 0x1858UL
103#define SABRE_ICLR_UE 0x1870UL
104#define SABRE_ICLR_CE 0x1878UL
105#define SABRE_ICLR_PCIERR 0x1880UL
106#define SABRE_WRSYNC 0x1c20UL
107#define SABRE_PCICTRL 0x2000UL
108#define SABRE_PCICTRL_MRLEN 0x0000001000000000UL /* Use MemoryReadLine for block loads/stores */
109#define SABRE_PCICTRL_SERR 0x0000000400000000UL /* Set when SERR asserted on PCI bus */
110#define SABRE_PCICTRL_ARBPARK 0x0000000000200000UL /* Bus Parking 0=Ultra-IIi 1=prev-bus-owner */
111#define SABRE_PCICTRL_CPUPRIO 0x0000000000100000UL /* Ultra-IIi granted every other bus cycle */
112#define SABRE_PCICTRL_ARBPRIO 0x00000000000f0000UL /* Slot which is granted every other bus cycle */
113#define SABRE_PCICTRL_ERREN 0x0000000000000100UL /* PCI Error Interrupt Enable */
114#define SABRE_PCICTRL_RTRYWE 0x0000000000000080UL /* DMA Flow Control 0=wait-if-possible 1=retry */
115#define SABRE_PCICTRL_AEN 0x000000000000000fUL /* Slot PCI arbitration enables */
116#define SABRE_PIOAFSR 0x2010UL
117#define SABRE_PIOAFSR_PMA 0x8000000000000000UL /* Primary Master Abort */
118#define SABRE_PIOAFSR_PTA 0x4000000000000000UL /* Primary Target Abort */
119#define SABRE_PIOAFSR_PRTRY 0x2000000000000000UL /* Primary Excessive Retries */
120#define SABRE_PIOAFSR_PPERR 0x1000000000000000UL /* Primary Parity Error */
121#define SABRE_PIOAFSR_SMA 0x0800000000000000UL /* Secondary Master Abort */
122#define SABRE_PIOAFSR_STA 0x0400000000000000UL /* Secondary Target Abort */
123#define SABRE_PIOAFSR_SRTRY 0x0200000000000000UL /* Secondary Excessive Retries */
124#define SABRE_PIOAFSR_SPERR 0x0100000000000000UL /* Secondary Parity Error */
125#define SABRE_PIOAFSR_BMSK 0x0000ffff00000000UL /* Byte Mask */
126#define SABRE_PIOAFSR_BLK 0x0000000080000000UL /* Was Block Operation */
127#define SABRE_PIOAFAR 0x2018UL
128#define SABRE_PCIDIAG 0x2020UL
129#define SABRE_PCIDIAG_DRTRY 0x0000000000000040UL /* Disable PIO Retry Limit */
130#define SABRE_PCIDIAG_IPAPAR 0x0000000000000008UL /* Invert PIO Address Parity */
131#define SABRE_PCIDIAG_IPDPAR 0x0000000000000004UL /* Invert PIO Data Parity */
132#define SABRE_PCIDIAG_IDDPAR 0x0000000000000002UL /* Invert DMA Data Parity */
133#define SABRE_PCIDIAG_ELPBK 0x0000000000000001UL /* Loopback Enable - not supported */
134#define SABRE_PCITASR 0x2028UL
135#define SABRE_PCITASR_EF 0x0000000000000080UL /* Respond to 0xe0000000-0xffffffff */
136#define SABRE_PCITASR_CD 0x0000000000000040UL /* Respond to 0xc0000000-0xdfffffff */
137#define SABRE_PCITASR_AB 0x0000000000000020UL /* Respond to 0xa0000000-0xbfffffff */
138#define SABRE_PCITASR_89 0x0000000000000010UL /* Respond to 0x80000000-0x9fffffff */
139#define SABRE_PCITASR_67 0x0000000000000008UL /* Respond to 0x60000000-0x7fffffff */
140#define SABRE_PCITASR_45 0x0000000000000004UL /* Respond to 0x40000000-0x5fffffff */
141#define SABRE_PCITASR_23 0x0000000000000002UL /* Respond to 0x20000000-0x3fffffff */
142#define SABRE_PCITASR_01 0x0000000000000001UL /* Respond to 0x00000000-0x1fffffff */
143#define SABRE_PIOBUF_DIAG 0x5000UL
144#define SABRE_DMABUF_DIAGLO 0x5100UL
145#define SABRE_DMABUF_DIAGHI 0x51c0UL
146#define SABRE_IMAP_GFX_ALIAS 0x6000UL /* Aliases to 0x1098 */
147#define SABRE_IMAP_EUPA_ALIAS 0x8000UL /* Aliases to 0x10a0 */
148#define SABRE_IOMMU_VADIAG 0xa400UL
149#define SABRE_IOMMU_TCDIAG 0xa408UL
150#define SABRE_IOMMU_TAG 0xa580UL
151#define SABRE_IOMMUTAG_ERRSTS 0x0000000001800000UL /* Error status bits */
152#define SABRE_IOMMUTAG_ERR 0x0000000000400000UL /* Error present */
153#define SABRE_IOMMUTAG_WRITE 0x0000000000200000UL /* Page is writable */
154#define SABRE_IOMMUTAG_STREAM 0x0000000000100000UL /* Streamable bit - unused */
155#define SABRE_IOMMUTAG_SIZE 0x0000000000080000UL /* 0=8k 1=16k */
156#define SABRE_IOMMUTAG_VPN 0x000000000007ffffUL /* Virtual Page Number [31:13] */
157#define SABRE_IOMMU_DATA 0xa600UL
158#define SABRE_IOMMUDATA_VALID 0x0000000040000000UL /* Valid */
159#define SABRE_IOMMUDATA_USED 0x0000000020000000UL /* Used (for LRU algorithm) */
160#define SABRE_IOMMUDATA_CACHE 0x0000000010000000UL /* Cacheable */
161#define SABRE_IOMMUDATA_PPN 0x00000000001fffffUL /* Physical Page Number [33:13] */
162#define SABRE_PCI_IRQSTATE 0xa800UL
163#define SABRE_OBIO_IRQSTATE 0xa808UL
164#define SABRE_FFBCFG 0xf000UL
165#define SABRE_FFBCFG_SPRQS 0x000000000f000000 /* Slave P_RQST queue size */
166#define SABRE_FFBCFG_ONEREAD 0x0000000000004000 /* Slave supports one outstanding read */
167#define SABRE_MCCTRL0 0xf010UL
168#define SABRE_MCCTRL0_RENAB 0x0000000080000000 /* Refresh Enable */
169#define SABRE_MCCTRL0_EENAB 0x0000000010000000 /* Enable all ECC functions */
170#define SABRE_MCCTRL0_11BIT 0x0000000000001000 /* Enable 11-bit column addressing */
171#define SABRE_MCCTRL0_DPP 0x0000000000000f00 /* DIMM Pair Present Bits */
172#define SABRE_MCCTRL0_RINTVL 0x00000000000000ff /* Refresh Interval */
173#define SABRE_MCCTRL1 0xf018UL
174#define SABRE_MCCTRL1_AMDC 0x0000000038000000 /* Advance Memdata Clock */
175#define SABRE_MCCTRL1_ARDC 0x0000000007000000 /* Advance DRAM Read Data Clock */
176#define SABRE_MCCTRL1_CSR 0x0000000000e00000 /* CAS to RAS delay for CBR refresh */
177#define SABRE_MCCTRL1_CASRW 0x00000000001c0000 /* CAS length for read/write */
178#define SABRE_MCCTRL1_RCD 0x0000000000038000 /* RAS to CAS delay */
179#define SABRE_MCCTRL1_CP 0x0000000000007000 /* CAS Precharge */
180#define SABRE_MCCTRL1_RP 0x0000000000000e00 /* RAS Precharge */
181#define SABRE_MCCTRL1_RAS 0x00000000000001c0 /* Length of RAS for refresh */
182#define SABRE_MCCTRL1_CASRW2 0x0000000000000038 /* Must be same as CASRW */
183#define SABRE_MCCTRL1_RSC 0x0000000000000007 /* RAS after CAS hold time */
184#define SABRE_RESETCTRL 0xf020UL
185
186#define SABRE_CONFIGSPACE 0x001000000UL
187#define SABRE_IOSPACE 0x002000000UL
188#define SABRE_IOSPACE_SIZE 0x000ffffffUL
189#define SABRE_MEMSPACE 0x100000000UL
190#define SABRE_MEMSPACE_SIZE 0x07fffffffUL
191
192static int hummingbird_p;
193static struct pci_bus *sabre_root_bus;
194
195static irqreturn_t sabre_ue_intr(int irq, void *dev_id)
196{
197 struct pci_pbm_info *pbm = dev_id;
198 unsigned long afsr_reg = pbm->controller_regs + SABRE_UE_AFSR;
199 unsigned long afar_reg = pbm->controller_regs + SABRE_UECE_AFAR;
200 unsigned long afsr, afar, error_bits;
201 int reported;
202
203 /* Latch uncorrectable error status. */
204 afar = upa_readq(afar_reg);
205 afsr = upa_readq(afsr_reg);
206
207 /* Clear the primary/secondary error status bits. */
208 error_bits = afsr &
209 (SABRE_UEAFSR_PDRD | SABRE_UEAFSR_PDWR |
210 SABRE_UEAFSR_SDRD | SABRE_UEAFSR_SDWR |
211 SABRE_UEAFSR_SDTE | SABRE_UEAFSR_PDTE);
212 if (!error_bits)
213 return IRQ_NONE;
214 upa_writeq(error_bits, afsr_reg);
215
216 /* Log the error. */
217 printk("%s: Uncorrectable Error, primary error type[%s%s]\n",
218 pbm->name,
219 ((error_bits & SABRE_UEAFSR_PDRD) ?
220 "DMA Read" :
221 ((error_bits & SABRE_UEAFSR_PDWR) ?
222 "DMA Write" : "???")),
223 ((error_bits & SABRE_UEAFSR_PDTE) ?
224 ":Translation Error" : ""));
225 printk("%s: bytemask[%04lx] dword_offset[%lx] was_block(%d)\n",
226 pbm->name,
227 (afsr & SABRE_UEAFSR_BMSK) >> 32UL,
228 (afsr & SABRE_UEAFSR_OFF) >> 29UL,
229 ((afsr & SABRE_UEAFSR_BLK) ? 1 : 0));
230 printk("%s: UE AFAR [%016lx]\n", pbm->name, afar);
231 printk("%s: UE Secondary errors [", pbm->name);
232 reported = 0;
233 if (afsr & SABRE_UEAFSR_SDRD) {
234 reported++;
235 printk("(DMA Read)");
236 }
237 if (afsr & SABRE_UEAFSR_SDWR) {
238 reported++;
239 printk("(DMA Write)");
240 }
241 if (afsr & SABRE_UEAFSR_SDTE) {
242 reported++;
243 printk("(Translation Error)");
244 }
245 if (!reported)
246 printk("(none)");
247 printk("]\n");
248
249 /* Interrogate IOMMU for error status. */
250 psycho_check_iommu_error(pbm, afsr, afar, UE_ERR);
251
252 return IRQ_HANDLED;
253}
254
255static irqreturn_t sabre_ce_intr(int irq, void *dev_id)
256{
257 struct pci_pbm_info *pbm = dev_id;
258 unsigned long afsr_reg = pbm->controller_regs + SABRE_CE_AFSR;
259 unsigned long afar_reg = pbm->controller_regs + SABRE_UECE_AFAR;
260 unsigned long afsr, afar, error_bits;
261 int reported;
262
263 /* Latch error status. */
264 afar = upa_readq(afar_reg);
265 afsr = upa_readq(afsr_reg);
266
267 /* Clear primary/secondary error status bits. */
268 error_bits = afsr &
269 (SABRE_CEAFSR_PDRD | SABRE_CEAFSR_PDWR |
270 SABRE_CEAFSR_SDRD | SABRE_CEAFSR_SDWR);
271 if (!error_bits)
272 return IRQ_NONE;
273 upa_writeq(error_bits, afsr_reg);
274
275 /* Log the error. */
276 printk("%s: Correctable Error, primary error type[%s]\n",
277 pbm->name,
278 ((error_bits & SABRE_CEAFSR_PDRD) ?
279 "DMA Read" :
280 ((error_bits & SABRE_CEAFSR_PDWR) ?
281 "DMA Write" : "???")));
282
283 /* XXX Use syndrome and afar to print out module string just like
284 * XXX UDB CE trap handler does... -DaveM
285 */
286 printk("%s: syndrome[%02lx] bytemask[%04lx] dword_offset[%lx] "
287 "was_block(%d)\n",
288 pbm->name,
289 (afsr & SABRE_CEAFSR_ESYND) >> 48UL,
290 (afsr & SABRE_CEAFSR_BMSK) >> 32UL,
291 (afsr & SABRE_CEAFSR_OFF) >> 29UL,
292 ((afsr & SABRE_CEAFSR_BLK) ? 1 : 0));
293 printk("%s: CE AFAR [%016lx]\n", pbm->name, afar);
294 printk("%s: CE Secondary errors [", pbm->name);
295 reported = 0;
296 if (afsr & SABRE_CEAFSR_SDRD) {
297 reported++;
298 printk("(DMA Read)");
299 }
300 if (afsr & SABRE_CEAFSR_SDWR) {
301 reported++;
302 printk("(DMA Write)");
303 }
304 if (!reported)
305 printk("(none)");
306 printk("]\n");
307
308 return IRQ_HANDLED;
309}
310
311static void sabre_register_error_handlers(struct pci_pbm_info *pbm)
312{
313 struct device_node *dp = pbm->op->node;
314 struct of_device *op;
315 unsigned long base = pbm->controller_regs;
316 u64 tmp;
317 int err;
318
319 if (pbm->chip_type == PBM_CHIP_TYPE_SABRE)
320 dp = dp->parent;
321
322 op = of_find_device_by_node(dp);
323 if (!op)
324 return;
325
326 /* Sabre/Hummingbird IRQ property layout is:
327 * 0: PCI ERR
328 * 1: UE ERR
329 * 2: CE ERR
330 * 3: POWER FAIL
331 */
332 if (op->num_irqs < 4)
333 return;
334
335 /* We clear the error bits in the appropriate AFSR before
336 * registering the handler so that we don't get spurious
337 * interrupts.
338 */
339 upa_writeq((SABRE_UEAFSR_PDRD | SABRE_UEAFSR_PDWR |
340 SABRE_UEAFSR_SDRD | SABRE_UEAFSR_SDWR |
341 SABRE_UEAFSR_SDTE | SABRE_UEAFSR_PDTE),
342 base + SABRE_UE_AFSR);
343
344 err = request_irq(op->irqs[1], sabre_ue_intr, 0, "SABRE_UE", pbm);
345 if (err)
346 printk(KERN_WARNING "%s: Couldn't register UE, err=%d.\n",
347 pbm->name, err);
348
349 upa_writeq((SABRE_CEAFSR_PDRD | SABRE_CEAFSR_PDWR |
350 SABRE_CEAFSR_SDRD | SABRE_CEAFSR_SDWR),
351 base + SABRE_CE_AFSR);
352
353
354 err = request_irq(op->irqs[2], sabre_ce_intr, 0, "SABRE_CE", pbm);
355 if (err)
356 printk(KERN_WARNING "%s: Couldn't register CE, err=%d.\n",
357 pbm->name, err);
358 err = request_irq(op->irqs[0], psycho_pcierr_intr, 0,
359 "SABRE_PCIERR", pbm);
360 if (err)
361 printk(KERN_WARNING "%s: Couldn't register PCIERR, err=%d.\n",
362 pbm->name, err);
363
364 tmp = upa_readq(base + SABRE_PCICTRL);
365 tmp |= SABRE_PCICTRL_ERREN;
366 upa_writeq(tmp, base + SABRE_PCICTRL);
367}
368
369static void apb_init(struct pci_bus *sabre_bus)
370{
371 struct pci_dev *pdev;
372
373 list_for_each_entry(pdev, &sabre_bus->devices, bus_list) {
374 if (pdev->vendor == PCI_VENDOR_ID_SUN &&
375 pdev->device == PCI_DEVICE_ID_SUN_SIMBA) {
376 u16 word16;
377
378 pci_read_config_word(pdev, PCI_COMMAND, &word16);
379 word16 |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY |
380 PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY |
381 PCI_COMMAND_IO;
382 pci_write_config_word(pdev, PCI_COMMAND, word16);
383
384 /* Status register bits are "write 1 to clear". */
385 pci_write_config_word(pdev, PCI_STATUS, 0xffff);
386 pci_write_config_word(pdev, PCI_SEC_STATUS, 0xffff);
387
388 /* Use a primary/seconday latency timer value
389 * of 64.
390 */
391 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 64);
392 pci_write_config_byte(pdev, PCI_SEC_LATENCY_TIMER, 64);
393
394 /* Enable reporting/forwarding of master aborts,
395 * parity, and SERR.
396 */
397 pci_write_config_byte(pdev, PCI_BRIDGE_CONTROL,
398 (PCI_BRIDGE_CTL_PARITY |
399 PCI_BRIDGE_CTL_SERR |
400 PCI_BRIDGE_CTL_MASTER_ABORT));
401 }
402 }
403}
404
405static void __init sabre_scan_bus(struct pci_pbm_info *pbm,
406 struct device *parent)
407{
408 static int once;
409
410 /* The APB bridge speaks to the Sabre host PCI bridge
411 * at 66Mhz, but the front side of APB runs at 33Mhz
412 * for both segments.
413 *
414 * Hummingbird systems do not use APB, so they run
415 * at 66MHZ.
416 */
417 if (hummingbird_p)
418 pbm->is_66mhz_capable = 1;
419 else
420 pbm->is_66mhz_capable = 0;
421
422 /* This driver has not been verified to handle
423 * multiple SABREs yet, so trap this.
424 *
425 * Also note that the SABRE host bridge is hardwired
426 * to live at bus 0.
427 */
428 if (once != 0) {
429 printk(KERN_ERR PFX "Multiple controllers unsupported.\n");
430 return;
431 }
432 once++;
433
434 pbm->pci_bus = pci_scan_one_pbm(pbm, parent);
435 if (!pbm->pci_bus)
436 return;
437
438 sabre_root_bus = pbm->pci_bus;
439
440 apb_init(pbm->pci_bus);
441
442 sabre_register_error_handlers(pbm);
443}
444
445static void __init sabre_pbm_init(struct pci_pbm_info *pbm,
446 struct of_device *op)
447{
448 psycho_pbm_init_common(pbm, op, "SABRE", PBM_CHIP_TYPE_SABRE);
449 pbm->pci_afsr = pbm->controller_regs + SABRE_PIOAFSR;
450 pbm->pci_afar = pbm->controller_regs + SABRE_PIOAFAR;
451 pbm->pci_csr = pbm->controller_regs + SABRE_PCICTRL;
452 sabre_scan_bus(pbm, &op->dev);
453}
454
455static int __devinit sabre_probe(struct of_device *op,
456 const struct of_device_id *match)
457{
458 const struct linux_prom64_registers *pr_regs;
459 struct device_node *dp = op->node;
460 struct pci_pbm_info *pbm;
461 u32 upa_portid, dma_mask;
462 struct iommu *iommu;
463 int tsbsize, err;
464 const u32 *vdma;
465 u64 clear_irq;
466
467 hummingbird_p = (match->data != NULL);
468 if (!hummingbird_p) {
469 struct device_node *cpu_dp;
470
471 /* Of course, Sun has to encode things a thousand
472 * different ways, inconsistently.
473 */
474 for_each_node_by_type(cpu_dp, "cpu") {
475 if (!strcmp(cpu_dp->name, "SUNW,UltraSPARC-IIe"))
476 hummingbird_p = 1;
477 }
478 }
479
480 err = -ENOMEM;
481 pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
482 if (!pbm) {
483 printk(KERN_ERR PFX "Cannot allocate pci_pbm_info.\n");
484 goto out_err;
485 }
486
487 iommu = kzalloc(sizeof(*iommu), GFP_KERNEL);
488 if (!iommu) {
489 printk(KERN_ERR PFX "Cannot allocate PBM iommu.\n");
490 goto out_free_controller;
491 }
492
493 pbm->iommu = iommu;
494
495 upa_portid = of_getintprop_default(dp, "upa-portid", 0xff);
496
497 pbm->portid = upa_portid;
498
499 /*
500 * Map in SABRE register set and report the presence of this SABRE.
501 */
502
503 pr_regs = of_get_property(dp, "reg", NULL);
504 err = -ENODEV;
505 if (!pr_regs) {
506 printk(KERN_ERR PFX "No reg property\n");
507 goto out_free_iommu;
508 }
509
510 /*
511 * First REG in property is base of entire SABRE register space.
512 */
513 pbm->controller_regs = pr_regs[0].phys_addr;
514
515 /* Clear interrupts */
516
517 /* PCI first */
518 for (clear_irq = SABRE_ICLR_A_SLOT0; clear_irq < SABRE_ICLR_B_SLOT0 + 0x80; clear_irq += 8)
519 upa_writeq(0x0UL, pbm->controller_regs + clear_irq);
520
521 /* Then OBIO */
522 for (clear_irq = SABRE_ICLR_SCSI; clear_irq < SABRE_ICLR_SCSI + 0x80; clear_irq += 8)
523 upa_writeq(0x0UL, pbm->controller_regs + clear_irq);
524
525 /* Error interrupts are enabled later after the bus scan. */
526 upa_writeq((SABRE_PCICTRL_MRLEN | SABRE_PCICTRL_SERR |
527 SABRE_PCICTRL_ARBPARK | SABRE_PCICTRL_AEN),
528 pbm->controller_regs + SABRE_PCICTRL);
529
530 /* Now map in PCI config space for entire SABRE. */
531 pbm->config_space = pbm->controller_regs + SABRE_CONFIGSPACE;
532
533 vdma = of_get_property(dp, "virtual-dma", NULL);
534 if (!vdma) {
535 printk(KERN_ERR PFX "No virtual-dma property\n");
536 goto out_free_iommu;
537 }
538
539 dma_mask = vdma[0];
540 switch(vdma[1]) {
541 case 0x20000000:
542 dma_mask |= 0x1fffffff;
543 tsbsize = 64;
544 break;
545 case 0x40000000:
546 dma_mask |= 0x3fffffff;
547 tsbsize = 128;
548 break;
549
550 case 0x80000000:
551 dma_mask |= 0x7fffffff;
552 tsbsize = 128;
553 break;
554 default:
555 printk(KERN_ERR PFX "Strange virtual-dma size.\n");
556 goto out_free_iommu;
557 }
558
559 err = psycho_iommu_init(pbm, tsbsize, vdma[0], dma_mask, SABRE_WRSYNC);
560 if (err)
561 goto out_free_iommu;
562
563 /*
564 * Look for APB underneath.
565 */
566 sabre_pbm_init(pbm, op);
567
568 pbm->next = pci_pbm_root;
569 pci_pbm_root = pbm;
570
571 dev_set_drvdata(&op->dev, pbm);
572
573 return 0;
574
575out_free_iommu:
576 kfree(pbm->iommu);
577
578out_free_controller:
579 kfree(pbm);
580
581out_err:
582 return err;
583}
584
585static struct of_device_id __initdata sabre_match[] = {
586 {
587 .name = "pci",
588 .compatible = "pci108e,a001",
589 .data = (void *) 1,
590 },
591 {
592 .name = "pci",
593 .compatible = "pci108e,a000",
594 },
595 {},
596};
597
598static struct of_platform_driver sabre_driver = {
599 .name = DRIVER_NAME,
600 .match_table = sabre_match,
601 .probe = sabre_probe,
602};
603
604static int __init sabre_init(void)
605{
606 return of_register_driver(&sabre_driver, &of_bus_type);
607}
608
609subsys_initcall(sabre_init);
diff --git a/arch/sparc/kernel/pci_schizo.c b/arch/sparc/kernel/pci_schizo.c
new file mode 100644
index 000000000000..45d9dba1ba11
--- /dev/null
+++ b/arch/sparc/kernel/pci_schizo.c
@@ -0,0 +1,1504 @@
1/* pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support.
2 *
3 * Copyright (C) 2001, 2002, 2003, 2007, 2008 David S. Miller (davem@davemloft.net)
4 */
5
6#include <linux/kernel.h>
7#include <linux/types.h>
8#include <linux/pci.h>
9#include <linux/init.h>
10#include <linux/slab.h>
11#include <linux/interrupt.h>
12#include <linux/of_device.h>
13
14#include <asm/iommu.h>
15#include <asm/irq.h>
16#include <asm/pstate.h>
17#include <asm/prom.h>
18#include <asm/upa.h>
19
20#include "pci_impl.h"
21#include "iommu_common.h"
22
23#define DRIVER_NAME "schizo"
24#define PFX DRIVER_NAME ": "
25
26/* This is a convention that at least Excalibur and Merlin
27 * follow. I suppose the SCHIZO used in Starcat and friends
28 * will do similar.
29 *
30 * The only way I could see this changing is if the newlink
31 * block requires more space in Schizo's address space than
32 * they predicted, thus requiring an address space reorg when
33 * the newer Schizo is taped out.
34 */
35
36/* Streaming buffer control register. */
37#define SCHIZO_STRBUF_CTRL_LPTR 0x00000000000000f0UL /* LRU Lock Pointer */
38#define SCHIZO_STRBUF_CTRL_LENAB 0x0000000000000008UL /* LRU Lock Enable */
39#define SCHIZO_STRBUF_CTRL_RRDIS 0x0000000000000004UL /* Rerun Disable */
40#define SCHIZO_STRBUF_CTRL_DENAB 0x0000000000000002UL /* Diagnostic Mode Enable */
41#define SCHIZO_STRBUF_CTRL_ENAB 0x0000000000000001UL /* Streaming Buffer Enable */
42
43/* IOMMU control register. */
44#define SCHIZO_IOMMU_CTRL_RESV 0xfffffffff9000000UL /* Reserved */
45#define SCHIZO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status */
46#define SCHIZO_IOMMU_CTRL_XLTEERR 0x0000000001000000UL /* Translation Error encountered */
47#define SCHIZO_IOMMU_CTRL_LCKEN 0x0000000000800000UL /* Enable translation locking */
48#define SCHIZO_IOMMU_CTRL_LCKPTR 0x0000000000780000UL /* Translation lock pointer */
49#define SCHIZO_IOMMU_CTRL_TSBSZ 0x0000000000070000UL /* TSB Size */
50#define SCHIZO_IOMMU_TSBSZ_1K 0x0000000000000000UL /* TSB Table 1024 8-byte entries */
51#define SCHIZO_IOMMU_TSBSZ_2K 0x0000000000010000UL /* TSB Table 2048 8-byte entries */
52#define SCHIZO_IOMMU_TSBSZ_4K 0x0000000000020000UL /* TSB Table 4096 8-byte entries */
53#define SCHIZO_IOMMU_TSBSZ_8K 0x0000000000030000UL /* TSB Table 8192 8-byte entries */
54#define SCHIZO_IOMMU_TSBSZ_16K 0x0000000000040000UL /* TSB Table 16k 8-byte entries */
55#define SCHIZO_IOMMU_TSBSZ_32K 0x0000000000050000UL /* TSB Table 32k 8-byte entries */
56#define SCHIZO_IOMMU_TSBSZ_64K 0x0000000000060000UL /* TSB Table 64k 8-byte entries */
57#define SCHIZO_IOMMU_TSBSZ_128K 0x0000000000070000UL /* TSB Table 128k 8-byte entries */
58#define SCHIZO_IOMMU_CTRL_RESV2 0x000000000000fff8UL /* Reserved */
59#define SCHIZO_IOMMU_CTRL_TBWSZ 0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */
60#define SCHIZO_IOMMU_CTRL_DENAB 0x0000000000000002UL /* Diagnostic mode enable */
61#define SCHIZO_IOMMU_CTRL_ENAB 0x0000000000000001UL /* IOMMU Enable */
62
63/* Schizo config space address format is nearly identical to
64 * that of PSYCHO:
65 *
66 * 32 24 23 16 15 11 10 8 7 2 1 0
67 * ---------------------------------------------------------
68 * |0 0 0 0 0 0 0 0 0| bus | device | function | reg | 0 0 |
69 * ---------------------------------------------------------
70 */
71#define SCHIZO_CONFIG_BASE(PBM) ((PBM)->config_space)
72#define SCHIZO_CONFIG_ENCODE(BUS, DEVFN, REG) \
73 (((unsigned long)(BUS) << 16) | \
74 ((unsigned long)(DEVFN) << 8) | \
75 ((unsigned long)(REG)))
76
77static void *schizo_pci_config_mkaddr(struct pci_pbm_info *pbm,
78 unsigned char bus,
79 unsigned int devfn,
80 int where)
81{
82 if (!pbm)
83 return NULL;
84 bus -= pbm->pci_first_busno;
85 return (void *)
86 (SCHIZO_CONFIG_BASE(pbm) |
87 SCHIZO_CONFIG_ENCODE(bus, devfn, where));
88}
89
90/* SCHIZO error handling support. */
91enum schizo_error_type {
92 UE_ERR, CE_ERR, PCI_ERR, SAFARI_ERR
93};
94
95static DEFINE_SPINLOCK(stc_buf_lock);
96static unsigned long stc_error_buf[128];
97static unsigned long stc_tag_buf[16];
98static unsigned long stc_line_buf[16];
99
100#define SCHIZO_UE_INO 0x30 /* Uncorrectable ECC error */
101#define SCHIZO_CE_INO 0x31 /* Correctable ECC error */
102#define SCHIZO_PCIERR_A_INO 0x32 /* PBM A PCI bus error */
103#define SCHIZO_PCIERR_B_INO 0x33 /* PBM B PCI bus error */
104#define SCHIZO_SERR_INO 0x34 /* Safari interface error */
105
106#define SCHIZO_STC_ERR 0xb800UL /* --> 0xba00 */
107#define SCHIZO_STC_TAG 0xba00UL /* --> 0xba80 */
108#define SCHIZO_STC_LINE 0xbb00UL /* --> 0xbb80 */
109
110#define SCHIZO_STCERR_WRITE 0x2UL
111#define SCHIZO_STCERR_READ 0x1UL
112
113#define SCHIZO_STCTAG_PPN 0x3fffffff00000000UL
114#define SCHIZO_STCTAG_VPN 0x00000000ffffe000UL
115#define SCHIZO_STCTAG_VALID 0x8000000000000000UL
116#define SCHIZO_STCTAG_READ 0x4000000000000000UL
117
118#define SCHIZO_STCLINE_LINDX 0x0000000007800000UL
119#define SCHIZO_STCLINE_SPTR 0x000000000007e000UL
120#define SCHIZO_STCLINE_LADDR 0x0000000000001fc0UL
121#define SCHIZO_STCLINE_EPTR 0x000000000000003fUL
122#define SCHIZO_STCLINE_VALID 0x0000000000600000UL
123#define SCHIZO_STCLINE_FOFN 0x0000000000180000UL
124
125static void __schizo_check_stc_error_pbm(struct pci_pbm_info *pbm,
126 enum schizo_error_type type)
127{
128 struct strbuf *strbuf = &pbm->stc;
129 unsigned long regbase = pbm->pbm_regs;
130 unsigned long err_base, tag_base, line_base;
131 u64 control;
132 int i;
133
134 err_base = regbase + SCHIZO_STC_ERR;
135 tag_base = regbase + SCHIZO_STC_TAG;
136 line_base = regbase + SCHIZO_STC_LINE;
137
138 spin_lock(&stc_buf_lock);
139
140 /* This is __REALLY__ dangerous. When we put the
141 * streaming buffer into diagnostic mode to probe
142 * it's tags and error status, we _must_ clear all
143 * of the line tag valid bits before re-enabling
144 * the streaming buffer. If any dirty data lives
145 * in the STC when we do this, we will end up
146 * invalidating it before it has a chance to reach
147 * main memory.
148 */
149 control = upa_readq(strbuf->strbuf_control);
150 upa_writeq((control | SCHIZO_STRBUF_CTRL_DENAB),
151 strbuf->strbuf_control);
152 for (i = 0; i < 128; i++) {
153 unsigned long val;
154
155 val = upa_readq(err_base + (i * 8UL));
156 upa_writeq(0UL, err_base + (i * 8UL));
157 stc_error_buf[i] = val;
158 }
159 for (i = 0; i < 16; i++) {
160 stc_tag_buf[i] = upa_readq(tag_base + (i * 8UL));
161 stc_line_buf[i] = upa_readq(line_base + (i * 8UL));
162 upa_writeq(0UL, tag_base + (i * 8UL));
163 upa_writeq(0UL, line_base + (i * 8UL));
164 }
165
166 /* OK, state is logged, exit diagnostic mode. */
167 upa_writeq(control, strbuf->strbuf_control);
168
169 for (i = 0; i < 16; i++) {
170 int j, saw_error, first, last;
171
172 saw_error = 0;
173 first = i * 8;
174 last = first + 8;
175 for (j = first; j < last; j++) {
176 unsigned long errval = stc_error_buf[j];
177 if (errval != 0) {
178 saw_error++;
179 printk("%s: STC_ERR(%d)[wr(%d)rd(%d)]\n",
180 pbm->name,
181 j,
182 (errval & SCHIZO_STCERR_WRITE) ? 1 : 0,
183 (errval & SCHIZO_STCERR_READ) ? 1 : 0);
184 }
185 }
186 if (saw_error != 0) {
187 unsigned long tagval = stc_tag_buf[i];
188 unsigned long lineval = stc_line_buf[i];
189 printk("%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)R(%d)]\n",
190 pbm->name,
191 i,
192 ((tagval & SCHIZO_STCTAG_PPN) >> 19UL),
193 (tagval & SCHIZO_STCTAG_VPN),
194 ((tagval & SCHIZO_STCTAG_VALID) ? 1 : 0),
195 ((tagval & SCHIZO_STCTAG_READ) ? 1 : 0));
196
197 /* XXX Should spit out per-bank error information... -DaveM */
198 printk("%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)"
199 "V(%d)FOFN(%d)]\n",
200 pbm->name,
201 i,
202 ((lineval & SCHIZO_STCLINE_LINDX) >> 23UL),
203 ((lineval & SCHIZO_STCLINE_SPTR) >> 13UL),
204 ((lineval & SCHIZO_STCLINE_LADDR) >> 6UL),
205 ((lineval & SCHIZO_STCLINE_EPTR) >> 0UL),
206 ((lineval & SCHIZO_STCLINE_VALID) ? 1 : 0),
207 ((lineval & SCHIZO_STCLINE_FOFN) ? 1 : 0));
208 }
209 }
210
211 spin_unlock(&stc_buf_lock);
212}
213
214/* IOMMU is per-PBM in Schizo, so interrogate both for anonymous
215 * controller level errors.
216 */
217
218#define SCHIZO_IOMMU_TAG 0xa580UL
219#define SCHIZO_IOMMU_DATA 0xa600UL
220
221#define SCHIZO_IOMMU_TAG_CTXT 0x0000001ffe000000UL
222#define SCHIZO_IOMMU_TAG_ERRSTS 0x0000000001800000UL
223#define SCHIZO_IOMMU_TAG_ERR 0x0000000000400000UL
224#define SCHIZO_IOMMU_TAG_WRITE 0x0000000000200000UL
225#define SCHIZO_IOMMU_TAG_STREAM 0x0000000000100000UL
226#define SCHIZO_IOMMU_TAG_SIZE 0x0000000000080000UL
227#define SCHIZO_IOMMU_TAG_VPAGE 0x000000000007ffffUL
228
229#define SCHIZO_IOMMU_DATA_VALID 0x0000000100000000UL
230#define SCHIZO_IOMMU_DATA_CACHE 0x0000000040000000UL
231#define SCHIZO_IOMMU_DATA_PPAGE 0x000000003fffffffUL
232
233static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm,
234 enum schizo_error_type type)
235{
236 struct iommu *iommu = pbm->iommu;
237 unsigned long iommu_tag[16];
238 unsigned long iommu_data[16];
239 unsigned long flags;
240 u64 control;
241 int i;
242
243 spin_lock_irqsave(&iommu->lock, flags);
244 control = upa_readq(iommu->iommu_control);
245 if (control & SCHIZO_IOMMU_CTRL_XLTEERR) {
246 unsigned long base;
247 char *type_string;
248
249 /* Clear the error encountered bit. */
250 control &= ~SCHIZO_IOMMU_CTRL_XLTEERR;
251 upa_writeq(control, iommu->iommu_control);
252
253 switch((control & SCHIZO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
254 case 0:
255 type_string = "Protection Error";
256 break;
257 case 1:
258 type_string = "Invalid Error";
259 break;
260 case 2:
261 type_string = "TimeOut Error";
262 break;
263 case 3:
264 default:
265 type_string = "ECC Error";
266 break;
267 };
268 printk("%s: IOMMU Error, type[%s]\n",
269 pbm->name, type_string);
270
271 /* Put the IOMMU into diagnostic mode and probe
272 * it's TLB for entries with error status.
273 *
274 * It is very possible for another DVMA to occur
275 * while we do this probe, and corrupt the system
276 * further. But we are so screwed at this point
277 * that we are likely to crash hard anyways, so
278 * get as much diagnostic information to the
279 * console as we can.
280 */
281 upa_writeq(control | SCHIZO_IOMMU_CTRL_DENAB,
282 iommu->iommu_control);
283
284 base = pbm->pbm_regs;
285
286 for (i = 0; i < 16; i++) {
287 iommu_tag[i] =
288 upa_readq(base + SCHIZO_IOMMU_TAG + (i * 8UL));
289 iommu_data[i] =
290 upa_readq(base + SCHIZO_IOMMU_DATA + (i * 8UL));
291
292 /* Now clear out the entry. */
293 upa_writeq(0, base + SCHIZO_IOMMU_TAG + (i * 8UL));
294 upa_writeq(0, base + SCHIZO_IOMMU_DATA + (i * 8UL));
295 }
296
297 /* Leave diagnostic mode. */
298 upa_writeq(control, iommu->iommu_control);
299
300 for (i = 0; i < 16; i++) {
301 unsigned long tag, data;
302
303 tag = iommu_tag[i];
304 if (!(tag & SCHIZO_IOMMU_TAG_ERR))
305 continue;
306
307 data = iommu_data[i];
308 switch((tag & SCHIZO_IOMMU_TAG_ERRSTS) >> 23UL) {
309 case 0:
310 type_string = "Protection Error";
311 break;
312 case 1:
313 type_string = "Invalid Error";
314 break;
315 case 2:
316 type_string = "TimeOut Error";
317 break;
318 case 3:
319 default:
320 type_string = "ECC Error";
321 break;
322 };
323 printk("%s: IOMMU TAG(%d)[error(%s) ctx(%x) wr(%d) str(%d) "
324 "sz(%dK) vpg(%08lx)]\n",
325 pbm->name, i, type_string,
326 (int)((tag & SCHIZO_IOMMU_TAG_CTXT) >> 25UL),
327 ((tag & SCHIZO_IOMMU_TAG_WRITE) ? 1 : 0),
328 ((tag & SCHIZO_IOMMU_TAG_STREAM) ? 1 : 0),
329 ((tag & SCHIZO_IOMMU_TAG_SIZE) ? 64 : 8),
330 (tag & SCHIZO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
331 printk("%s: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]\n",
332 pbm->name, i,
333 ((data & SCHIZO_IOMMU_DATA_VALID) ? 1 : 0),
334 ((data & SCHIZO_IOMMU_DATA_CACHE) ? 1 : 0),
335 (data & SCHIZO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT);
336 }
337 }
338 if (pbm->stc.strbuf_enabled)
339 __schizo_check_stc_error_pbm(pbm, type);
340 spin_unlock_irqrestore(&iommu->lock, flags);
341}
342
343static void schizo_check_iommu_error(struct pci_pbm_info *pbm,
344 enum schizo_error_type type)
345{
346 schizo_check_iommu_error_pbm(pbm, type);
347 if (pbm->sibling)
348 schizo_check_iommu_error_pbm(pbm->sibling, type);
349}
350
351/* Uncorrectable ECC error status gathering. */
352#define SCHIZO_UE_AFSR 0x10030UL
353#define SCHIZO_UE_AFAR 0x10038UL
354
355#define SCHIZO_UEAFSR_PPIO 0x8000000000000000UL /* Safari */
356#define SCHIZO_UEAFSR_PDRD 0x4000000000000000UL /* Safari/Tomatillo */
357#define SCHIZO_UEAFSR_PDWR 0x2000000000000000UL /* Safari */
358#define SCHIZO_UEAFSR_SPIO 0x1000000000000000UL /* Safari */
359#define SCHIZO_UEAFSR_SDMA 0x0800000000000000UL /* Safari/Tomatillo */
360#define SCHIZO_UEAFSR_ERRPNDG 0x0300000000000000UL /* Safari */
361#define SCHIZO_UEAFSR_BMSK 0x000003ff00000000UL /* Safari */
362#define SCHIZO_UEAFSR_QOFF 0x00000000c0000000UL /* Safari/Tomatillo */
363#define SCHIZO_UEAFSR_AID 0x000000001f000000UL /* Safari/Tomatillo */
364#define SCHIZO_UEAFSR_PARTIAL 0x0000000000800000UL /* Safari */
365#define SCHIZO_UEAFSR_OWNEDIN 0x0000000000400000UL /* Safari */
366#define SCHIZO_UEAFSR_MTAGSYND 0x00000000000f0000UL /* Safari */
367#define SCHIZO_UEAFSR_MTAG 0x000000000000e000UL /* Safari */
368#define SCHIZO_UEAFSR_ECCSYND 0x00000000000001ffUL /* Safari */
369
370static irqreturn_t schizo_ue_intr(int irq, void *dev_id)
371{
372 struct pci_pbm_info *pbm = dev_id;
373 unsigned long afsr_reg = pbm->controller_regs + SCHIZO_UE_AFSR;
374 unsigned long afar_reg = pbm->controller_regs + SCHIZO_UE_AFAR;
375 unsigned long afsr, afar, error_bits;
376 int reported, limit;
377
378 /* Latch uncorrectable error status. */
379 afar = upa_readq(afar_reg);
380
381 /* If either of the error pending bits are set in the
382 * AFSR, the error status is being actively updated by
383 * the hardware and we must re-read to get a clean value.
384 */
385 limit = 1000;
386 do {
387 afsr = upa_readq(afsr_reg);
388 } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
389
390 /* Clear the primary/secondary error status bits. */
391 error_bits = afsr &
392 (SCHIZO_UEAFSR_PPIO | SCHIZO_UEAFSR_PDRD | SCHIZO_UEAFSR_PDWR |
393 SCHIZO_UEAFSR_SPIO | SCHIZO_UEAFSR_SDMA);
394 if (!error_bits)
395 return IRQ_NONE;
396 upa_writeq(error_bits, afsr_reg);
397
398 /* Log the error. */
399 printk("%s: Uncorrectable Error, primary error type[%s]\n",
400 pbm->name,
401 (((error_bits & SCHIZO_UEAFSR_PPIO) ?
402 "PIO" :
403 ((error_bits & SCHIZO_UEAFSR_PDRD) ?
404 "DMA Read" :
405 ((error_bits & SCHIZO_UEAFSR_PDWR) ?
406 "DMA Write" : "???")))));
407 printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
408 pbm->name,
409 (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
410 (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
411 (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
412 printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
413 pbm->name,
414 (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
415 (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
416 (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
417 (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
418 (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
419 printk("%s: UE AFAR [%016lx]\n", pbm->name, afar);
420 printk("%s: UE Secondary errors [", pbm->name);
421 reported = 0;
422 if (afsr & SCHIZO_UEAFSR_SPIO) {
423 reported++;
424 printk("(PIO)");
425 }
426 if (afsr & SCHIZO_UEAFSR_SDMA) {
427 reported++;
428 printk("(DMA)");
429 }
430 if (!reported)
431 printk("(none)");
432 printk("]\n");
433
434 /* Interrogate IOMMU for error status. */
435 schizo_check_iommu_error(pbm, UE_ERR);
436
437 return IRQ_HANDLED;
438}
439
440#define SCHIZO_CE_AFSR 0x10040UL
441#define SCHIZO_CE_AFAR 0x10048UL
442
443#define SCHIZO_CEAFSR_PPIO 0x8000000000000000UL
444#define SCHIZO_CEAFSR_PDRD 0x4000000000000000UL
445#define SCHIZO_CEAFSR_PDWR 0x2000000000000000UL
446#define SCHIZO_CEAFSR_SPIO 0x1000000000000000UL
447#define SCHIZO_CEAFSR_SDMA 0x0800000000000000UL
448#define SCHIZO_CEAFSR_ERRPNDG 0x0300000000000000UL
449#define SCHIZO_CEAFSR_BMSK 0x000003ff00000000UL
450#define SCHIZO_CEAFSR_QOFF 0x00000000c0000000UL
451#define SCHIZO_CEAFSR_AID 0x000000001f000000UL
452#define SCHIZO_CEAFSR_PARTIAL 0x0000000000800000UL
453#define SCHIZO_CEAFSR_OWNEDIN 0x0000000000400000UL
454#define SCHIZO_CEAFSR_MTAGSYND 0x00000000000f0000UL
455#define SCHIZO_CEAFSR_MTAG 0x000000000000e000UL
456#define SCHIZO_CEAFSR_ECCSYND 0x00000000000001ffUL
457
458static irqreturn_t schizo_ce_intr(int irq, void *dev_id)
459{
460 struct pci_pbm_info *pbm = dev_id;
461 unsigned long afsr_reg = pbm->controller_regs + SCHIZO_CE_AFSR;
462 unsigned long afar_reg = pbm->controller_regs + SCHIZO_CE_AFAR;
463 unsigned long afsr, afar, error_bits;
464 int reported, limit;
465
466 /* Latch error status. */
467 afar = upa_readq(afar_reg);
468
469 /* If either of the error pending bits are set in the
470 * AFSR, the error status is being actively updated by
471 * the hardware and we must re-read to get a clean value.
472 */
473 limit = 1000;
474 do {
475 afsr = upa_readq(afsr_reg);
476 } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
477
478 /* Clear primary/secondary error status bits. */
479 error_bits = afsr &
480 (SCHIZO_CEAFSR_PPIO | SCHIZO_CEAFSR_PDRD | SCHIZO_CEAFSR_PDWR |
481 SCHIZO_CEAFSR_SPIO | SCHIZO_CEAFSR_SDMA);
482 if (!error_bits)
483 return IRQ_NONE;
484 upa_writeq(error_bits, afsr_reg);
485
486 /* Log the error. */
487 printk("%s: Correctable Error, primary error type[%s]\n",
488 pbm->name,
489 (((error_bits & SCHIZO_CEAFSR_PPIO) ?
490 "PIO" :
491 ((error_bits & SCHIZO_CEAFSR_PDRD) ?
492 "DMA Read" :
493 ((error_bits & SCHIZO_CEAFSR_PDWR) ?
494 "DMA Write" : "???")))));
495
496 /* XXX Use syndrome and afar to print out module string just like
497 * XXX UDB CE trap handler does... -DaveM
498 */
499 printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
500 pbm->name,
501 (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
502 (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
503 (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
504 printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
505 pbm->name,
506 (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
507 (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
508 (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
509 (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
510 (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
511 printk("%s: CE AFAR [%016lx]\n", pbm->name, afar);
512 printk("%s: CE Secondary errors [", pbm->name);
513 reported = 0;
514 if (afsr & SCHIZO_CEAFSR_SPIO) {
515 reported++;
516 printk("(PIO)");
517 }
518 if (afsr & SCHIZO_CEAFSR_SDMA) {
519 reported++;
520 printk("(DMA)");
521 }
522 if (!reported)
523 printk("(none)");
524 printk("]\n");
525
526 return IRQ_HANDLED;
527}
528
529#define SCHIZO_PCI_AFSR 0x2010UL
530#define SCHIZO_PCI_AFAR 0x2018UL
531
532#define SCHIZO_PCIAFSR_PMA 0x8000000000000000UL /* Schizo/Tomatillo */
533#define SCHIZO_PCIAFSR_PTA 0x4000000000000000UL /* Schizo/Tomatillo */
534#define SCHIZO_PCIAFSR_PRTRY 0x2000000000000000UL /* Schizo/Tomatillo */
535#define SCHIZO_PCIAFSR_PPERR 0x1000000000000000UL /* Schizo/Tomatillo */
536#define SCHIZO_PCIAFSR_PTTO 0x0800000000000000UL /* Schizo/Tomatillo */
537#define SCHIZO_PCIAFSR_PUNUS 0x0400000000000000UL /* Schizo */
538#define SCHIZO_PCIAFSR_SMA 0x0200000000000000UL /* Schizo/Tomatillo */
539#define SCHIZO_PCIAFSR_STA 0x0100000000000000UL /* Schizo/Tomatillo */
540#define SCHIZO_PCIAFSR_SRTRY 0x0080000000000000UL /* Schizo/Tomatillo */
541#define SCHIZO_PCIAFSR_SPERR 0x0040000000000000UL /* Schizo/Tomatillo */
542#define SCHIZO_PCIAFSR_STTO 0x0020000000000000UL /* Schizo/Tomatillo */
543#define SCHIZO_PCIAFSR_SUNUS 0x0010000000000000UL /* Schizo */
544#define SCHIZO_PCIAFSR_BMSK 0x000003ff00000000UL /* Schizo/Tomatillo */
545#define SCHIZO_PCIAFSR_BLK 0x0000000080000000UL /* Schizo/Tomatillo */
546#define SCHIZO_PCIAFSR_CFG 0x0000000040000000UL /* Schizo/Tomatillo */
547#define SCHIZO_PCIAFSR_MEM 0x0000000020000000UL /* Schizo/Tomatillo */
548#define SCHIZO_PCIAFSR_IO 0x0000000010000000UL /* Schizo/Tomatillo */
549
550#define SCHIZO_PCI_CTRL (0x2000UL)
551#define SCHIZO_PCICTRL_BUS_UNUS (1UL << 63UL) /* Safari */
552#define SCHIZO_PCICTRL_DTO_INT (1UL << 61UL) /* Tomatillo */
553#define SCHIZO_PCICTRL_ARB_PRIO (0x1ff << 52UL) /* Tomatillo */
554#define SCHIZO_PCICTRL_ESLCK (1UL << 51UL) /* Safari */
555#define SCHIZO_PCICTRL_ERRSLOT (7UL << 48UL) /* Safari */
556#define SCHIZO_PCICTRL_TTO_ERR (1UL << 38UL) /* Safari/Tomatillo */
557#define SCHIZO_PCICTRL_RTRY_ERR (1UL << 37UL) /* Safari/Tomatillo */
558#define SCHIZO_PCICTRL_DTO_ERR (1UL << 36UL) /* Safari/Tomatillo */
559#define SCHIZO_PCICTRL_SBH_ERR (1UL << 35UL) /* Safari */
560#define SCHIZO_PCICTRL_SERR (1UL << 34UL) /* Safari/Tomatillo */
561#define SCHIZO_PCICTRL_PCISPD (1UL << 33UL) /* Safari */
562#define SCHIZO_PCICTRL_MRM_PREF (1UL << 30UL) /* Tomatillo */
563#define SCHIZO_PCICTRL_RDO_PREF (1UL << 29UL) /* Tomatillo */
564#define SCHIZO_PCICTRL_RDL_PREF (1UL << 28UL) /* Tomatillo */
565#define SCHIZO_PCICTRL_PTO (3UL << 24UL) /* Safari/Tomatillo */
566#define SCHIZO_PCICTRL_PTO_SHIFT 24UL
567#define SCHIZO_PCICTRL_TRWSW (7UL << 21UL) /* Tomatillo */
568#define SCHIZO_PCICTRL_F_TGT_A (1UL << 20UL) /* Tomatillo */
569#define SCHIZO_PCICTRL_S_DTO_INT (1UL << 19UL) /* Safari */
570#define SCHIZO_PCICTRL_F_TGT_RT (1UL << 19UL) /* Tomatillo */
571#define SCHIZO_PCICTRL_SBH_INT (1UL << 18UL) /* Safari */
572#define SCHIZO_PCICTRL_T_DTO_INT (1UL << 18UL) /* Tomatillo */
573#define SCHIZO_PCICTRL_EEN (1UL << 17UL) /* Safari/Tomatillo */
574#define SCHIZO_PCICTRL_PARK (1UL << 16UL) /* Safari/Tomatillo */
575#define SCHIZO_PCICTRL_PCIRST (1UL << 8UL) /* Safari */
576#define SCHIZO_PCICTRL_ARB_S (0x3fUL << 0UL) /* Safari */
577#define SCHIZO_PCICTRL_ARB_T (0xffUL << 0UL) /* Tomatillo */
578
579static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm)
580{
581 unsigned long csr_reg, csr, csr_error_bits;
582 irqreturn_t ret = IRQ_NONE;
583 u16 stat;
584
585 csr_reg = pbm->pbm_regs + SCHIZO_PCI_CTRL;
586 csr = upa_readq(csr_reg);
587 csr_error_bits =
588 csr & (SCHIZO_PCICTRL_BUS_UNUS |
589 SCHIZO_PCICTRL_TTO_ERR |
590 SCHIZO_PCICTRL_RTRY_ERR |
591 SCHIZO_PCICTRL_DTO_ERR |
592 SCHIZO_PCICTRL_SBH_ERR |
593 SCHIZO_PCICTRL_SERR);
594 if (csr_error_bits) {
595 /* Clear the errors. */
596 upa_writeq(csr, csr_reg);
597
598 /* Log 'em. */
599 if (csr_error_bits & SCHIZO_PCICTRL_BUS_UNUS)
600 printk("%s: Bus unusable error asserted.\n",
601 pbm->name);
602 if (csr_error_bits & SCHIZO_PCICTRL_TTO_ERR)
603 printk("%s: PCI TRDY# timeout error asserted.\n",
604 pbm->name);
605 if (csr_error_bits & SCHIZO_PCICTRL_RTRY_ERR)
606 printk("%s: PCI excessive retry error asserted.\n",
607 pbm->name);
608 if (csr_error_bits & SCHIZO_PCICTRL_DTO_ERR)
609 printk("%s: PCI discard timeout error asserted.\n",
610 pbm->name);
611 if (csr_error_bits & SCHIZO_PCICTRL_SBH_ERR)
612 printk("%s: PCI streaming byte hole error asserted.\n",
613 pbm->name);
614 if (csr_error_bits & SCHIZO_PCICTRL_SERR)
615 printk("%s: PCI SERR signal asserted.\n",
616 pbm->name);
617 ret = IRQ_HANDLED;
618 }
619 pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat);
620 if (stat & (PCI_STATUS_PARITY |
621 PCI_STATUS_SIG_TARGET_ABORT |
622 PCI_STATUS_REC_TARGET_ABORT |
623 PCI_STATUS_REC_MASTER_ABORT |
624 PCI_STATUS_SIG_SYSTEM_ERROR)) {
625 printk("%s: PCI bus error, PCI_STATUS[%04x]\n",
626 pbm->name, stat);
627 pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff);
628 ret = IRQ_HANDLED;
629 }
630 return ret;
631}
632
633static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id)
634{
635 struct pci_pbm_info *pbm = dev_id;
636 unsigned long afsr_reg, afar_reg, base;
637 unsigned long afsr, afar, error_bits;
638 int reported;
639
640 base = pbm->pbm_regs;
641
642 afsr_reg = base + SCHIZO_PCI_AFSR;
643 afar_reg = base + SCHIZO_PCI_AFAR;
644
645 /* Latch error status. */
646 afar = upa_readq(afar_reg);
647 afsr = upa_readq(afsr_reg);
648
649 /* Clear primary/secondary error status bits. */
650 error_bits = afsr &
651 (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
652 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
653 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
654 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
655 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
656 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS);
657 if (!error_bits)
658 return schizo_pcierr_intr_other(pbm);
659 upa_writeq(error_bits, afsr_reg);
660
661 /* Log the error. */
662 printk("%s: PCI Error, primary error type[%s]\n",
663 pbm->name,
664 (((error_bits & SCHIZO_PCIAFSR_PMA) ?
665 "Master Abort" :
666 ((error_bits & SCHIZO_PCIAFSR_PTA) ?
667 "Target Abort" :
668 ((error_bits & SCHIZO_PCIAFSR_PRTRY) ?
669 "Excessive Retries" :
670 ((error_bits & SCHIZO_PCIAFSR_PPERR) ?
671 "Parity Error" :
672 ((error_bits & SCHIZO_PCIAFSR_PTTO) ?
673 "Timeout" :
674 ((error_bits & SCHIZO_PCIAFSR_PUNUS) ?
675 "Bus Unusable" : "???"))))))));
676 printk("%s: bytemask[%04lx] was_block(%d) space(%s)\n",
677 pbm->name,
678 (afsr & SCHIZO_PCIAFSR_BMSK) >> 32UL,
679 (afsr & SCHIZO_PCIAFSR_BLK) ? 1 : 0,
680 ((afsr & SCHIZO_PCIAFSR_CFG) ?
681 "Config" :
682 ((afsr & SCHIZO_PCIAFSR_MEM) ?
683 "Memory" :
684 ((afsr & SCHIZO_PCIAFSR_IO) ?
685 "I/O" : "???"))));
686 printk("%s: PCI AFAR [%016lx]\n",
687 pbm->name, afar);
688 printk("%s: PCI Secondary errors [",
689 pbm->name);
690 reported = 0;
691 if (afsr & SCHIZO_PCIAFSR_SMA) {
692 reported++;
693 printk("(Master Abort)");
694 }
695 if (afsr & SCHIZO_PCIAFSR_STA) {
696 reported++;
697 printk("(Target Abort)");
698 }
699 if (afsr & SCHIZO_PCIAFSR_SRTRY) {
700 reported++;
701 printk("(Excessive Retries)");
702 }
703 if (afsr & SCHIZO_PCIAFSR_SPERR) {
704 reported++;
705 printk("(Parity Error)");
706 }
707 if (afsr & SCHIZO_PCIAFSR_STTO) {
708 reported++;
709 printk("(Timeout)");
710 }
711 if (afsr & SCHIZO_PCIAFSR_SUNUS) {
712 reported++;
713 printk("(Bus Unusable)");
714 }
715 if (!reported)
716 printk("(none)");
717 printk("]\n");
718
719 /* For the error types shown, scan PBM's PCI bus for devices
720 * which have logged that error type.
721 */
722
723 /* If we see a Target Abort, this could be the result of an
724 * IOMMU translation error of some sort. It is extremely
725 * useful to log this information as usually it indicates
726 * a bug in the IOMMU support code or a PCI device driver.
727 */
728 if (error_bits & (SCHIZO_PCIAFSR_PTA | SCHIZO_PCIAFSR_STA)) {
729 schizo_check_iommu_error(pbm, PCI_ERR);
730 pci_scan_for_target_abort(pbm, pbm->pci_bus);
731 }
732 if (error_bits & (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_SMA))
733 pci_scan_for_master_abort(pbm, pbm->pci_bus);
734
735 /* For excessive retries, PSYCHO/PBM will abort the device
736 * and there is no way to specifically check for excessive
737 * retries in the config space status registers. So what
738 * we hope is that we'll catch it via the master/target
739 * abort events.
740 */
741
742 if (error_bits & (SCHIZO_PCIAFSR_PPERR | SCHIZO_PCIAFSR_SPERR))
743 pci_scan_for_parity_error(pbm, pbm->pci_bus);
744
745 return IRQ_HANDLED;
746}
747
748#define SCHIZO_SAFARI_ERRLOG 0x10018UL
749
750#define SAFARI_ERRLOG_ERROUT 0x8000000000000000UL
751
752#define BUS_ERROR_BADCMD 0x4000000000000000UL /* Schizo/Tomatillo */
753#define BUS_ERROR_SSMDIS 0x2000000000000000UL /* Safari */
754#define BUS_ERROR_BADMA 0x1000000000000000UL /* Safari */
755#define BUS_ERROR_BADMB 0x0800000000000000UL /* Safari */
756#define BUS_ERROR_BADMC 0x0400000000000000UL /* Safari */
757#define BUS_ERROR_SNOOP_GR 0x0000000000200000UL /* Tomatillo */
758#define BUS_ERROR_SNOOP_PCI 0x0000000000100000UL /* Tomatillo */
759#define BUS_ERROR_SNOOP_RD 0x0000000000080000UL /* Tomatillo */
760#define BUS_ERROR_SNOOP_RDS 0x0000000000020000UL /* Tomatillo */
761#define BUS_ERROR_SNOOP_RDSA 0x0000000000010000UL /* Tomatillo */
762#define BUS_ERROR_SNOOP_OWN 0x0000000000008000UL /* Tomatillo */
763#define BUS_ERROR_SNOOP_RDO 0x0000000000004000UL /* Tomatillo */
764#define BUS_ERROR_CPU1PS 0x0000000000002000UL /* Safari */
765#define BUS_ERROR_WDATA_PERR 0x0000000000002000UL /* Tomatillo */
766#define BUS_ERROR_CPU1PB 0x0000000000001000UL /* Safari */
767#define BUS_ERROR_CTRL_PERR 0x0000000000001000UL /* Tomatillo */
768#define BUS_ERROR_CPU0PS 0x0000000000000800UL /* Safari */
769#define BUS_ERROR_SNOOP_ERR 0x0000000000000800UL /* Tomatillo */
770#define BUS_ERROR_CPU0PB 0x0000000000000400UL /* Safari */
771#define BUS_ERROR_JBUS_ILL_B 0x0000000000000400UL /* Tomatillo */
772#define BUS_ERROR_CIQTO 0x0000000000000200UL /* Safari */
773#define BUS_ERROR_LPQTO 0x0000000000000100UL /* Safari */
774#define BUS_ERROR_JBUS_ILL_C 0x0000000000000100UL /* Tomatillo */
775#define BUS_ERROR_SFPQTO 0x0000000000000080UL /* Safari */
776#define BUS_ERROR_UFPQTO 0x0000000000000040UL /* Safari */
777#define BUS_ERROR_RD_PERR 0x0000000000000040UL /* Tomatillo */
778#define BUS_ERROR_APERR 0x0000000000000020UL /* Safari/Tomatillo */
779#define BUS_ERROR_UNMAP 0x0000000000000010UL /* Safari/Tomatillo */
780#define BUS_ERROR_BUSERR 0x0000000000000004UL /* Safari/Tomatillo */
781#define BUS_ERROR_TIMEOUT 0x0000000000000002UL /* Safari/Tomatillo */
782#define BUS_ERROR_ILL 0x0000000000000001UL /* Safari */
783
784/* We only expect UNMAP errors here. The rest of the Safari errors
785 * are marked fatal and thus cause a system reset.
786 */
787static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id)
788{
789 struct pci_pbm_info *pbm = dev_id;
790 u64 errlog;
791
792 errlog = upa_readq(pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);
793 upa_writeq(errlog & ~(SAFARI_ERRLOG_ERROUT),
794 pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);
795
796 if (!(errlog & BUS_ERROR_UNMAP)) {
797 printk("%s: Unexpected Safari/JBUS error interrupt, errlog[%016lx]\n",
798 pbm->name, errlog);
799
800 return IRQ_HANDLED;
801 }
802
803 printk("%s: Safari/JBUS interrupt, UNMAPPED error, interrogating IOMMUs.\n",
804 pbm->name);
805 schizo_check_iommu_error(pbm, SAFARI_ERR);
806
807 return IRQ_HANDLED;
808}
809
810/* Nearly identical to PSYCHO equivalents... */
811#define SCHIZO_ECC_CTRL 0x10020UL
812#define SCHIZO_ECCCTRL_EE 0x8000000000000000UL /* Enable ECC Checking */
813#define SCHIZO_ECCCTRL_UE 0x4000000000000000UL /* Enable UE Interrupts */
814#define SCHIZO_ECCCTRL_CE 0x2000000000000000UL /* Enable CE INterrupts */
815
816#define SCHIZO_SAFARI_ERRCTRL 0x10008UL
817#define SCHIZO_SAFERRCTRL_EN 0x8000000000000000UL
818#define SCHIZO_SAFARI_IRQCTRL 0x10010UL
819#define SCHIZO_SAFIRQCTRL_EN 0x8000000000000000UL
820
821static int pbm_routes_this_ino(struct pci_pbm_info *pbm, u32 ino)
822{
823 ino &= IMAP_INO;
824
825 if (pbm->ino_bitmap & (1UL << ino))
826 return 1;
827
828 return 0;
829}
830
831/* How the Tomatillo IRQs are routed around is pure guesswork here.
832 *
833 * All the Tomatillo devices I see in prtconf dumps seem to have only
834 * a single PCI bus unit attached to it. It would seem they are separate
835 * devices because their PortID (ie. JBUS ID) values are all different
836 * and thus the registers are mapped to totally different locations.
837 *
838 * However, two Tomatillo's look "similar" in that the only difference
839 * in their PortID is the lowest bit.
840 *
841 * So if we were to ignore this lower bit, it certainly looks like two
842 * PCI bus units of the same Tomatillo. I still have not really
843 * figured this out...
844 */
845static void tomatillo_register_error_handlers(struct pci_pbm_info *pbm)
846{
847 struct of_device *op = of_find_device_by_node(pbm->op->node);
848 u64 tmp, err_mask, err_no_mask;
849 int err;
850
851 /* Tomatillo IRQ property layout is:
852 * 0: PCIERR
853 * 1: UE ERR
854 * 2: CE ERR
855 * 3: SERR
856 * 4: POWER FAIL?
857 */
858
859 if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {
860 err = request_irq(op->irqs[1], schizo_ue_intr, 0,
861 "TOMATILLO_UE", pbm);
862 if (err)
863 printk(KERN_WARNING "%s: Could not register UE, "
864 "err=%d\n", pbm->name, err);
865 }
866 if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {
867 err = request_irq(op->irqs[2], schizo_ce_intr, 0,
868 "TOMATILLO_CE", pbm);
869 if (err)
870 printk(KERN_WARNING "%s: Could not register CE, "
871 "err=%d\n", pbm->name, err);
872 }
873 err = 0;
874 if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {
875 err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
876 "TOMATILLO_PCIERR", pbm);
877 } else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {
878 err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
879 "TOMATILLO_PCIERR", pbm);
880 }
881 if (err)
882 printk(KERN_WARNING "%s: Could not register PCIERR, "
883 "err=%d\n", pbm->name, err);
884
885 if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {
886 err = request_irq(op->irqs[3], schizo_safarierr_intr, 0,
887 "TOMATILLO_SERR", pbm);
888 if (err)
889 printk(KERN_WARNING "%s: Could not register SERR, "
890 "err=%d\n", pbm->name, err);
891 }
892
893 /* Enable UE and CE interrupts for controller. */
894 upa_writeq((SCHIZO_ECCCTRL_EE |
895 SCHIZO_ECCCTRL_UE |
896 SCHIZO_ECCCTRL_CE), pbm->controller_regs + SCHIZO_ECC_CTRL);
897
898 /* Enable PCI Error interrupts and clear error
899 * bits.
900 */
901 err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
902 SCHIZO_PCICTRL_TTO_ERR |
903 SCHIZO_PCICTRL_RTRY_ERR |
904 SCHIZO_PCICTRL_SERR |
905 SCHIZO_PCICTRL_EEN);
906
907 err_no_mask = SCHIZO_PCICTRL_DTO_ERR;
908
909 tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);
910 tmp |= err_mask;
911 tmp &= ~err_no_mask;
912 upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);
913
914 err_mask = (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
915 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
916 SCHIZO_PCIAFSR_PTTO |
917 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
918 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
919 SCHIZO_PCIAFSR_STTO);
920
921 upa_writeq(err_mask, pbm->pbm_regs + SCHIZO_PCI_AFSR);
922
923 err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SNOOP_GR |
924 BUS_ERROR_SNOOP_PCI | BUS_ERROR_SNOOP_RD |
925 BUS_ERROR_SNOOP_RDS | BUS_ERROR_SNOOP_RDSA |
926 BUS_ERROR_SNOOP_OWN | BUS_ERROR_SNOOP_RDO |
927 BUS_ERROR_WDATA_PERR | BUS_ERROR_CTRL_PERR |
928 BUS_ERROR_SNOOP_ERR | BUS_ERROR_JBUS_ILL_B |
929 BUS_ERROR_JBUS_ILL_C | BUS_ERROR_RD_PERR |
930 BUS_ERROR_APERR | BUS_ERROR_UNMAP |
931 BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT);
932
933 upa_writeq((SCHIZO_SAFERRCTRL_EN | err_mask),
934 pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL);
935
936 upa_writeq((SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)),
937 pbm->controller_regs + SCHIZO_SAFARI_IRQCTRL);
938}
939
940static void schizo_register_error_handlers(struct pci_pbm_info *pbm)
941{
942 struct of_device *op = of_find_device_by_node(pbm->op->node);
943 u64 tmp, err_mask, err_no_mask;
944 int err;
945
946 /* Schizo IRQ property layout is:
947 * 0: PCIERR
948 * 1: UE ERR
949 * 2: CE ERR
950 * 3: SERR
951 * 4: POWER FAIL?
952 */
953
954 if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {
955 err = request_irq(op->irqs[1], schizo_ue_intr, 0,
956 "SCHIZO_UE", pbm);
957 if (err)
958 printk(KERN_WARNING "%s: Could not register UE, "
959 "err=%d\n", pbm->name, err);
960 }
961 if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {
962 err = request_irq(op->irqs[2], schizo_ce_intr, 0,
963 "SCHIZO_CE", pbm);
964 if (err)
965 printk(KERN_WARNING "%s: Could not register CE, "
966 "err=%d\n", pbm->name, err);
967 }
968 err = 0;
969 if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {
970 err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
971 "SCHIZO_PCIERR", pbm);
972 } else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {
973 err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
974 "SCHIZO_PCIERR", pbm);
975 }
976 if (err)
977 printk(KERN_WARNING "%s: Could not register PCIERR, "
978 "err=%d\n", pbm->name, err);
979
980 if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {
981 err = request_irq(op->irqs[3], schizo_safarierr_intr, 0,
982 "SCHIZO_SERR", pbm);
983 if (err)
984 printk(KERN_WARNING "%s: Could not register SERR, "
985 "err=%d\n", pbm->name, err);
986 }
987
988 /* Enable UE and CE interrupts for controller. */
989 upa_writeq((SCHIZO_ECCCTRL_EE |
990 SCHIZO_ECCCTRL_UE |
991 SCHIZO_ECCCTRL_CE), pbm->controller_regs + SCHIZO_ECC_CTRL);
992
993 err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
994 SCHIZO_PCICTRL_ESLCK |
995 SCHIZO_PCICTRL_TTO_ERR |
996 SCHIZO_PCICTRL_RTRY_ERR |
997 SCHIZO_PCICTRL_SBH_ERR |
998 SCHIZO_PCICTRL_SERR |
999 SCHIZO_PCICTRL_EEN);
1000
1001 err_no_mask = (SCHIZO_PCICTRL_DTO_ERR |
1002 SCHIZO_PCICTRL_SBH_INT);
1003
1004 /* Enable PCI Error interrupts and clear error
1005 * bits for each PBM.
1006 */
1007 tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);
1008 tmp |= err_mask;
1009 tmp &= ~err_no_mask;
1010 upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);
1011
1012 upa_writeq((SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
1013 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
1014 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
1015 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
1016 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
1017 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS),
1018 pbm->pbm_regs + SCHIZO_PCI_AFSR);
1019
1020 /* Make all Safari error conditions fatal except unmapped
1021 * errors which we make generate interrupts.
1022 */
1023 err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SSMDIS |
1024 BUS_ERROR_BADMA | BUS_ERROR_BADMB |
1025 BUS_ERROR_BADMC |
1026 BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
1027 BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB |
1028 BUS_ERROR_CIQTO |
1029 BUS_ERROR_LPQTO | BUS_ERROR_SFPQTO |
1030 BUS_ERROR_UFPQTO | BUS_ERROR_APERR |
1031 BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT |
1032 BUS_ERROR_ILL);
1033#if 1
1034 /* XXX Something wrong with some Excalibur systems
1035 * XXX Sun is shipping. The behavior on a 2-cpu
1036 * XXX machine is that both CPU1 parity error bits
1037 * XXX are set and are immediately set again when
1038 * XXX their error status bits are cleared. Just
1039 * XXX ignore them for now. -DaveM
1040 */
1041 err_mask &= ~(BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
1042 BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB);
1043#endif
1044
1045 upa_writeq((SCHIZO_SAFERRCTRL_EN | err_mask),
1046 pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL);
1047}
1048
1049static void pbm_config_busmastering(struct pci_pbm_info *pbm)
1050{
1051 u8 *addr;
1052
1053 /* Set cache-line size to 64 bytes, this is actually
1054 * a nop but I do it for completeness.
1055 */
1056 addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
1057 0, PCI_CACHE_LINE_SIZE);
1058 pci_config_write8(addr, 64 / sizeof(u32));
1059
1060 /* Set PBM latency timer to 64 PCI clocks. */
1061 addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
1062 0, PCI_LATENCY_TIMER);
1063 pci_config_write8(addr, 64);
1064}
1065
1066static void __devinit schizo_scan_bus(struct pci_pbm_info *pbm,
1067 struct device *parent)
1068{
1069 pbm_config_busmastering(pbm);
1070 pbm->is_66mhz_capable =
1071 (of_find_property(pbm->op->node, "66mhz-capable", NULL)
1072 != NULL);
1073
1074 pbm->pci_bus = pci_scan_one_pbm(pbm, parent);
1075
1076 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
1077 tomatillo_register_error_handlers(pbm);
1078 else
1079 schizo_register_error_handlers(pbm);
1080}
1081
1082#define SCHIZO_STRBUF_CONTROL (0x02800UL)
1083#define SCHIZO_STRBUF_FLUSH (0x02808UL)
1084#define SCHIZO_STRBUF_FSYNC (0x02810UL)
1085#define SCHIZO_STRBUF_CTXFLUSH (0x02818UL)
1086#define SCHIZO_STRBUF_CTXMATCH (0x10000UL)
1087
1088static void schizo_pbm_strbuf_init(struct pci_pbm_info *pbm)
1089{
1090 unsigned long base = pbm->pbm_regs;
1091 u64 control;
1092
1093 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1094 /* TOMATILLO lacks streaming cache. */
1095 return;
1096 }
1097
1098 /* SCHIZO has context flushing. */
1099 pbm->stc.strbuf_control = base + SCHIZO_STRBUF_CONTROL;
1100 pbm->stc.strbuf_pflush = base + SCHIZO_STRBUF_FLUSH;
1101 pbm->stc.strbuf_fsync = base + SCHIZO_STRBUF_FSYNC;
1102 pbm->stc.strbuf_ctxflush = base + SCHIZO_STRBUF_CTXFLUSH;
1103 pbm->stc.strbuf_ctxmatch_base = base + SCHIZO_STRBUF_CTXMATCH;
1104
1105 pbm->stc.strbuf_flushflag = (volatile unsigned long *)
1106 ((((unsigned long)&pbm->stc.__flushflag_buf[0])
1107 + 63UL)
1108 & ~63UL);
1109 pbm->stc.strbuf_flushflag_pa = (unsigned long)
1110 __pa(pbm->stc.strbuf_flushflag);
1111
1112 /* Turn off LRU locking and diag mode, enable the
1113 * streaming buffer and leave the rerun-disable
1114 * setting however OBP set it.
1115 */
1116 control = upa_readq(pbm->stc.strbuf_control);
1117 control &= ~(SCHIZO_STRBUF_CTRL_LPTR |
1118 SCHIZO_STRBUF_CTRL_LENAB |
1119 SCHIZO_STRBUF_CTRL_DENAB);
1120 control |= SCHIZO_STRBUF_CTRL_ENAB;
1121 upa_writeq(control, pbm->stc.strbuf_control);
1122
1123 pbm->stc.strbuf_enabled = 1;
1124}
1125
1126#define SCHIZO_IOMMU_CONTROL (0x00200UL)
1127#define SCHIZO_IOMMU_TSBBASE (0x00208UL)
1128#define SCHIZO_IOMMU_FLUSH (0x00210UL)
1129#define SCHIZO_IOMMU_CTXFLUSH (0x00218UL)
1130
1131static int schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
1132{
1133 static const u32 vdma_default[] = { 0xc0000000, 0x40000000 };
1134 unsigned long i, tagbase, database;
1135 struct iommu *iommu = pbm->iommu;
1136 int tsbsize, err;
1137 const u32 *vdma;
1138 u32 dma_mask;
1139 u64 control;
1140
1141 vdma = of_get_property(pbm->op->node, "virtual-dma", NULL);
1142 if (!vdma)
1143 vdma = vdma_default;
1144
1145 dma_mask = vdma[0];
1146 switch (vdma[1]) {
1147 case 0x20000000:
1148 dma_mask |= 0x1fffffff;
1149 tsbsize = 64;
1150 break;
1151
1152 case 0x40000000:
1153 dma_mask |= 0x3fffffff;
1154 tsbsize = 128;
1155 break;
1156
1157 case 0x80000000:
1158 dma_mask |= 0x7fffffff;
1159 tsbsize = 128;
1160 break;
1161
1162 default:
1163 printk(KERN_ERR PFX "Strange virtual-dma size.\n");
1164 return -EINVAL;
1165 }
1166
1167 /* Register addresses, SCHIZO has iommu ctx flushing. */
1168 iommu->iommu_control = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;
1169 iommu->iommu_tsbbase = pbm->pbm_regs + SCHIZO_IOMMU_TSBBASE;
1170 iommu->iommu_flush = pbm->pbm_regs + SCHIZO_IOMMU_FLUSH;
1171 iommu->iommu_tags = iommu->iommu_flush + (0xa580UL - 0x0210UL);
1172 iommu->iommu_ctxflush = pbm->pbm_regs + SCHIZO_IOMMU_CTXFLUSH;
1173
1174 /* We use the main control/status register of SCHIZO as the write
1175 * completion register.
1176 */
1177 iommu->write_complete_reg = pbm->controller_regs + 0x10000UL;
1178
1179 /*
1180 * Invalidate TLB Entries.
1181 */
1182 control = upa_readq(iommu->iommu_control);
1183 control |= SCHIZO_IOMMU_CTRL_DENAB;
1184 upa_writeq(control, iommu->iommu_control);
1185
1186 tagbase = SCHIZO_IOMMU_TAG, database = SCHIZO_IOMMU_DATA;
1187
1188 for (i = 0; i < 16; i++) {
1189 upa_writeq(0, pbm->pbm_regs + tagbase + (i * 8UL));
1190 upa_writeq(0, pbm->pbm_regs + database + (i * 8UL));
1191 }
1192
1193 /* Leave diag mode enabled for full-flushing done
1194 * in pci_iommu.c
1195 */
1196 err = iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask,
1197 pbm->numa_node);
1198 if (err) {
1199 printk(KERN_ERR PFX "iommu_table_init() fails with %d\n", err);
1200 return err;
1201 }
1202
1203 upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);
1204
1205 control = upa_readq(iommu->iommu_control);
1206 control &= ~(SCHIZO_IOMMU_CTRL_TSBSZ | SCHIZO_IOMMU_CTRL_TBWSZ);
1207 switch (tsbsize) {
1208 case 64:
1209 control |= SCHIZO_IOMMU_TSBSZ_64K;
1210 break;
1211 case 128:
1212 control |= SCHIZO_IOMMU_TSBSZ_128K;
1213 break;
1214 }
1215
1216 control |= SCHIZO_IOMMU_CTRL_ENAB;
1217 upa_writeq(control, iommu->iommu_control);
1218
1219 return 0;
1220}
1221
1222#define SCHIZO_PCI_IRQ_RETRY (0x1a00UL)
1223#define SCHIZO_IRQ_RETRY_INF 0xffUL
1224
1225#define SCHIZO_PCI_DIAG (0x2020UL)
1226#define SCHIZO_PCIDIAG_D_BADECC (1UL << 10UL) /* Disable BAD ECC errors (Schizo) */
1227#define SCHIZO_PCIDIAG_D_BYPASS (1UL << 9UL) /* Disable MMU bypass mode (Schizo/Tomatillo) */
1228#define SCHIZO_PCIDIAG_D_TTO (1UL << 8UL) /* Disable TTO errors (Schizo/Tomatillo) */
1229#define SCHIZO_PCIDIAG_D_RTRYARB (1UL << 7UL) /* Disable retry arbitration (Schizo) */
1230#define SCHIZO_PCIDIAG_D_RETRY (1UL << 6UL) /* Disable retry limit (Schizo/Tomatillo) */
1231#define SCHIZO_PCIDIAG_D_INTSYNC (1UL << 5UL) /* Disable interrupt/DMA synch (Schizo/Tomatillo) */
1232#define SCHIZO_PCIDIAG_I_DMA_PARITY (1UL << 3UL) /* Invert DMA parity (Schizo/Tomatillo) */
1233#define SCHIZO_PCIDIAG_I_PIOD_PARITY (1UL << 2UL) /* Invert PIO data parity (Schizo/Tomatillo) */
1234#define SCHIZO_PCIDIAG_I_PIOA_PARITY (1UL << 1UL) /* Invert PIO address parity (Schizo/Tomatillo) */
1235
1236#define TOMATILLO_PCI_IOC_CSR (0x2248UL)
1237#define TOMATILLO_IOC_PART_WPENAB 0x0000000000080000UL
1238#define TOMATILLO_IOC_RDMULT_PENAB 0x0000000000040000UL
1239#define TOMATILLO_IOC_RDONE_PENAB 0x0000000000020000UL
1240#define TOMATILLO_IOC_RDLINE_PENAB 0x0000000000010000UL
1241#define TOMATILLO_IOC_RDMULT_PLEN 0x000000000000c000UL
1242#define TOMATILLO_IOC_RDMULT_PLEN_SHIFT 14UL
1243#define TOMATILLO_IOC_RDONE_PLEN 0x0000000000003000UL
1244#define TOMATILLO_IOC_RDONE_PLEN_SHIFT 12UL
1245#define TOMATILLO_IOC_RDLINE_PLEN 0x0000000000000c00UL
1246#define TOMATILLO_IOC_RDLINE_PLEN_SHIFT 10UL
1247#define TOMATILLO_IOC_PREF_OFF 0x00000000000003f8UL
1248#define TOMATILLO_IOC_PREF_OFF_SHIFT 3UL
1249#define TOMATILLO_IOC_RDMULT_CPENAB 0x0000000000000004UL
1250#define TOMATILLO_IOC_RDONE_CPENAB 0x0000000000000002UL
1251#define TOMATILLO_IOC_RDLINE_CPENAB 0x0000000000000001UL
1252
1253#define TOMATILLO_PCI_IOC_TDIAG (0x2250UL)
1254#define TOMATILLO_PCI_IOC_DDIAG (0x2290UL)
1255
1256static void schizo_pbm_hw_init(struct pci_pbm_info *pbm)
1257{
1258 u64 tmp;
1259
1260 upa_writeq(5, pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY);
1261
1262 tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);
1263
1264 /* Enable arbiter for all PCI slots. */
1265 tmp |= 0xff;
1266
1267 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
1268 pbm->chip_version >= 0x2)
1269 tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT;
1270
1271 if (!of_find_property(pbm->op->node, "no-bus-parking", NULL))
1272 tmp |= SCHIZO_PCICTRL_PARK;
1273 else
1274 tmp &= ~SCHIZO_PCICTRL_PARK;
1275
1276 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
1277 pbm->chip_version <= 0x1)
1278 tmp |= SCHIZO_PCICTRL_DTO_INT;
1279 else
1280 tmp &= ~SCHIZO_PCICTRL_DTO_INT;
1281
1282 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
1283 tmp |= (SCHIZO_PCICTRL_MRM_PREF |
1284 SCHIZO_PCICTRL_RDO_PREF |
1285 SCHIZO_PCICTRL_RDL_PREF);
1286
1287 upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);
1288
1289 tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_DIAG);
1290 tmp &= ~(SCHIZO_PCIDIAG_D_RTRYARB |
1291 SCHIZO_PCIDIAG_D_RETRY |
1292 SCHIZO_PCIDIAG_D_INTSYNC);
1293 upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_DIAG);
1294
1295 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1296 /* Clear prefetch lengths to workaround a bug in
1297 * Jalapeno...
1298 */
1299 tmp = (TOMATILLO_IOC_PART_WPENAB |
1300 (1 << TOMATILLO_IOC_PREF_OFF_SHIFT) |
1301 TOMATILLO_IOC_RDMULT_CPENAB |
1302 TOMATILLO_IOC_RDONE_CPENAB |
1303 TOMATILLO_IOC_RDLINE_CPENAB);
1304
1305 upa_writeq(tmp, pbm->pbm_regs + TOMATILLO_PCI_IOC_CSR);
1306 }
1307}
1308
1309static int __devinit schizo_pbm_init(struct pci_pbm_info *pbm,
1310 struct of_device *op, u32 portid,
1311 int chip_type)
1312{
1313 const struct linux_prom64_registers *regs;
1314 struct device_node *dp = op->node;
1315 const char *chipset_name;
1316 int is_pbm_a, err;
1317
1318 switch (chip_type) {
1319 case PBM_CHIP_TYPE_TOMATILLO:
1320 chipset_name = "TOMATILLO";
1321 break;
1322
1323 case PBM_CHIP_TYPE_SCHIZO_PLUS:
1324 chipset_name = "SCHIZO+";
1325 break;
1326
1327 case PBM_CHIP_TYPE_SCHIZO:
1328 default:
1329 chipset_name = "SCHIZO";
1330 break;
1331 };
1332
1333 /* For SCHIZO, three OBP regs:
1334 * 1) PBM controller regs
1335 * 2) Schizo front-end controller regs (same for both PBMs)
1336 * 3) PBM PCI config space
1337 *
1338 * For TOMATILLO, four OBP regs:
1339 * 1) PBM controller regs
1340 * 2) Tomatillo front-end controller regs
1341 * 3) PBM PCI config space
1342 * 4) Ichip regs
1343 */
1344 regs = of_get_property(dp, "reg", NULL);
1345
1346 is_pbm_a = ((regs[0].phys_addr & 0x00700000) == 0x00600000);
1347
1348 pbm->next = pci_pbm_root;
1349 pci_pbm_root = pbm;
1350
1351 pbm->numa_node = -1;
1352
1353 pbm->pci_ops = &sun4u_pci_ops;
1354 pbm->config_space_reg_bits = 8;
1355
1356 pbm->index = pci_num_pbms++;
1357
1358 pbm->portid = portid;
1359 pbm->op = op;
1360
1361 pbm->chip_type = chip_type;
1362 pbm->chip_version = of_getintprop_default(dp, "version#", 0);
1363 pbm->chip_revision = of_getintprop_default(dp, "module-version#", 0);
1364
1365 pbm->pbm_regs = regs[0].phys_addr;
1366 pbm->controller_regs = regs[1].phys_addr - 0x10000UL;
1367
1368 if (chip_type == PBM_CHIP_TYPE_TOMATILLO)
1369 pbm->sync_reg = regs[3].phys_addr + 0x1a18UL;
1370
1371 pbm->name = dp->full_name;
1372
1373 printk("%s: %s PCI Bus Module ver[%x:%x]\n",
1374 pbm->name, chipset_name,
1375 pbm->chip_version, pbm->chip_revision);
1376
1377 schizo_pbm_hw_init(pbm);
1378
1379 pci_determine_mem_io_space(pbm);
1380
1381 pci_get_pbm_props(pbm);
1382
1383 err = schizo_pbm_iommu_init(pbm);
1384 if (err)
1385 return err;
1386
1387 schizo_pbm_strbuf_init(pbm);
1388
1389 schizo_scan_bus(pbm, &op->dev);
1390
1391 return 0;
1392}
1393
1394static inline int portid_compare(u32 x, u32 y, int chip_type)
1395{
1396 if (chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1397 if (x == (y ^ 1))
1398 return 1;
1399 return 0;
1400 }
1401 return (x == y);
1402}
1403
1404static struct pci_pbm_info * __devinit schizo_find_sibling(u32 portid,
1405 int chip_type)
1406{
1407 struct pci_pbm_info *pbm;
1408
1409 for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
1410 if (portid_compare(pbm->portid, portid, chip_type))
1411 return pbm;
1412 }
1413 return NULL;
1414}
1415
1416static int __devinit __schizo_init(struct of_device *op, unsigned long chip_type)
1417{
1418 struct device_node *dp = op->node;
1419 struct pci_pbm_info *pbm;
1420 struct iommu *iommu;
1421 u32 portid;
1422 int err;
1423
1424 portid = of_getintprop_default(dp, "portid", 0xff);
1425
1426 err = -ENOMEM;
1427 pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
1428 if (!pbm) {
1429 printk(KERN_ERR PFX "Cannot allocate pci_pbm_info.\n");
1430 goto out_err;
1431 }
1432
1433 pbm->sibling = schizo_find_sibling(portid, chip_type);
1434
1435 iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL);
1436 if (!iommu) {
1437 printk(KERN_ERR PFX "Cannot allocate PBM A iommu.\n");
1438 goto out_free_pbm;
1439 }
1440
1441 pbm->iommu = iommu;
1442
1443 if (schizo_pbm_init(pbm, op, portid, chip_type))
1444 goto out_free_iommu;
1445
1446 if (pbm->sibling)
1447 pbm->sibling->sibling = pbm;
1448
1449 dev_set_drvdata(&op->dev, pbm);
1450
1451 return 0;
1452
1453out_free_iommu:
1454 kfree(pbm->iommu);
1455
1456out_free_pbm:
1457 kfree(pbm);
1458
1459out_err:
1460 return err;
1461}
1462
1463static int __devinit schizo_probe(struct of_device *op,
1464 const struct of_device_id *match)
1465{
1466 return __schizo_init(op, (unsigned long) match->data);
1467}
1468
1469/* The ordering of this table is very important. Some Tomatillo
1470 * nodes announce that they are compatible with both pci108e,a801
1471 * and pci108e,8001. So list the chips in reverse chronological
1472 * order.
1473 */
1474static struct of_device_id __initdata schizo_match[] = {
1475 {
1476 .name = "pci",
1477 .compatible = "pci108e,a801",
1478 .data = (void *) PBM_CHIP_TYPE_TOMATILLO,
1479 },
1480 {
1481 .name = "pci",
1482 .compatible = "pci108e,8002",
1483 .data = (void *) PBM_CHIP_TYPE_SCHIZO_PLUS,
1484 },
1485 {
1486 .name = "pci",
1487 .compatible = "pci108e,8001",
1488 .data = (void *) PBM_CHIP_TYPE_SCHIZO,
1489 },
1490 {},
1491};
1492
1493static struct of_platform_driver schizo_driver = {
1494 .name = DRIVER_NAME,
1495 .match_table = schizo_match,
1496 .probe = schizo_probe,
1497};
1498
1499static int __init schizo_init(void)
1500{
1501 return of_register_driver(&schizo_driver, &of_bus_type);
1502}
1503
1504subsys_initcall(schizo_init);
diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c
new file mode 100644
index 000000000000..34a1fded3941
--- /dev/null
+++ b/arch/sparc/kernel/pci_sun4v.c
@@ -0,0 +1,1033 @@
1/* pci_sun4v.c: SUN4V specific PCI controller support.
2 *
3 * Copyright (C) 2006, 2007, 2008 David S. Miller (davem@davemloft.net)
4 */
5
6#include <linux/kernel.h>
7#include <linux/types.h>
8#include <linux/pci.h>
9#include <linux/init.h>
10#include <linux/slab.h>
11#include <linux/interrupt.h>
12#include <linux/percpu.h>
13#include <linux/irq.h>
14#include <linux/msi.h>
15#include <linux/log2.h>
16#include <linux/of_device.h>
17
18#include <asm/iommu.h>
19#include <asm/irq.h>
20#include <asm/hypervisor.h>
21#include <asm/prom.h>
22
23#include "pci_impl.h"
24#include "iommu_common.h"
25
26#include "pci_sun4v.h"
27
28#define DRIVER_NAME "pci_sun4v"
29#define PFX DRIVER_NAME ": "
30
31static unsigned long vpci_major = 1;
32static unsigned long vpci_minor = 1;
33
34#define PGLIST_NENTS (PAGE_SIZE / sizeof(u64))
35
36struct iommu_batch {
37 struct device *dev; /* Device mapping is for. */
38 unsigned long prot; /* IOMMU page protections */
39 unsigned long entry; /* Index into IOTSB. */
40 u64 *pglist; /* List of physical pages */
41 unsigned long npages; /* Number of pages in list. */
42};
43
44static DEFINE_PER_CPU(struct iommu_batch, iommu_batch);
45static int iommu_batch_initialized;
46
47/* Interrupts must be disabled. */
48static inline void iommu_batch_start(struct device *dev, unsigned long prot, unsigned long entry)
49{
50 struct iommu_batch *p = &__get_cpu_var(iommu_batch);
51
52 p->dev = dev;
53 p->prot = prot;
54 p->entry = entry;
55 p->npages = 0;
56}
57
58/* Interrupts must be disabled. */
59static long iommu_batch_flush(struct iommu_batch *p)
60{
61 struct pci_pbm_info *pbm = p->dev->archdata.host_controller;
62 unsigned long devhandle = pbm->devhandle;
63 unsigned long prot = p->prot;
64 unsigned long entry = p->entry;
65 u64 *pglist = p->pglist;
66 unsigned long npages = p->npages;
67
68 while (npages != 0) {
69 long num;
70
71 num = pci_sun4v_iommu_map(devhandle, HV_PCI_TSBID(0, entry),
72 npages, prot, __pa(pglist));
73 if (unlikely(num < 0)) {
74 if (printk_ratelimit())
75 printk("iommu_batch_flush: IOMMU map of "
76 "[%08lx:%08lx:%lx:%lx:%lx] failed with "
77 "status %ld\n",
78 devhandle, HV_PCI_TSBID(0, entry),
79 npages, prot, __pa(pglist), num);
80 return -1;
81 }
82
83 entry += num;
84 npages -= num;
85 pglist += num;
86 }
87
88 p->entry = entry;
89 p->npages = 0;
90
91 return 0;
92}
93
94static inline void iommu_batch_new_entry(unsigned long entry)
95{
96 struct iommu_batch *p = &__get_cpu_var(iommu_batch);
97
98 if (p->entry + p->npages == entry)
99 return;
100 if (p->entry != ~0UL)
101 iommu_batch_flush(p);
102 p->entry = entry;
103}
104
105/* Interrupts must be disabled. */
106static inline long iommu_batch_add(u64 phys_page)
107{
108 struct iommu_batch *p = &__get_cpu_var(iommu_batch);
109
110 BUG_ON(p->npages >= PGLIST_NENTS);
111
112 p->pglist[p->npages++] = phys_page;
113 if (p->npages == PGLIST_NENTS)
114 return iommu_batch_flush(p);
115
116 return 0;
117}
118
119/* Interrupts must be disabled. */
120static inline long iommu_batch_end(void)
121{
122 struct iommu_batch *p = &__get_cpu_var(iommu_batch);
123
124 BUG_ON(p->npages >= PGLIST_NENTS);
125
126 return iommu_batch_flush(p);
127}
128
129static void *dma_4v_alloc_coherent(struct device *dev, size_t size,
130 dma_addr_t *dma_addrp, gfp_t gfp)
131{
132 unsigned long flags, order, first_page, npages, n;
133 struct iommu *iommu;
134 struct page *page;
135 void *ret;
136 long entry;
137 int nid;
138
139 size = IO_PAGE_ALIGN(size);
140 order = get_order(size);
141 if (unlikely(order >= MAX_ORDER))
142 return NULL;
143
144 npages = size >> IO_PAGE_SHIFT;
145
146 nid = dev->archdata.numa_node;
147 page = alloc_pages_node(nid, gfp, order);
148 if (unlikely(!page))
149 return NULL;
150
151 first_page = (unsigned long) page_address(page);
152 memset((char *)first_page, 0, PAGE_SIZE << order);
153
154 iommu = dev->archdata.iommu;
155
156 spin_lock_irqsave(&iommu->lock, flags);
157 entry = iommu_range_alloc(dev, iommu, npages, NULL);
158 spin_unlock_irqrestore(&iommu->lock, flags);
159
160 if (unlikely(entry == DMA_ERROR_CODE))
161 goto range_alloc_fail;
162
163 *dma_addrp = (iommu->page_table_map_base +
164 (entry << IO_PAGE_SHIFT));
165 ret = (void *) first_page;
166 first_page = __pa(first_page);
167
168 local_irq_save(flags);
169
170 iommu_batch_start(dev,
171 (HV_PCI_MAP_ATTR_READ |
172 HV_PCI_MAP_ATTR_WRITE),
173 entry);
174
175 for (n = 0; n < npages; n++) {
176 long err = iommu_batch_add(first_page + (n * PAGE_SIZE));
177 if (unlikely(err < 0L))
178 goto iommu_map_fail;
179 }
180
181 if (unlikely(iommu_batch_end() < 0L))
182 goto iommu_map_fail;
183
184 local_irq_restore(flags);
185
186 return ret;
187
188iommu_map_fail:
189 /* Interrupts are disabled. */
190 spin_lock(&iommu->lock);
191 iommu_range_free(iommu, *dma_addrp, npages);
192 spin_unlock_irqrestore(&iommu->lock, flags);
193
194range_alloc_fail:
195 free_pages(first_page, order);
196 return NULL;
197}
198
199static void dma_4v_free_coherent(struct device *dev, size_t size, void *cpu,
200 dma_addr_t dvma)
201{
202 struct pci_pbm_info *pbm;
203 struct iommu *iommu;
204 unsigned long flags, order, npages, entry;
205 u32 devhandle;
206
207 npages = IO_PAGE_ALIGN(size) >> IO_PAGE_SHIFT;
208 iommu = dev->archdata.iommu;
209 pbm = dev->archdata.host_controller;
210 devhandle = pbm->devhandle;
211 entry = ((dvma - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
212
213 spin_lock_irqsave(&iommu->lock, flags);
214
215 iommu_range_free(iommu, dvma, npages);
216
217 do {
218 unsigned long num;
219
220 num = pci_sun4v_iommu_demap(devhandle, HV_PCI_TSBID(0, entry),
221 npages);
222 entry += num;
223 npages -= num;
224 } while (npages != 0);
225
226 spin_unlock_irqrestore(&iommu->lock, flags);
227
228 order = get_order(size);
229 if (order < 10)
230 free_pages((unsigned long)cpu, order);
231}
232
233static dma_addr_t dma_4v_map_single(struct device *dev, void *ptr, size_t sz,
234 enum dma_data_direction direction)
235{
236 struct iommu *iommu;
237 unsigned long flags, npages, oaddr;
238 unsigned long i, base_paddr;
239 u32 bus_addr, ret;
240 unsigned long prot;
241 long entry;
242
243 iommu = dev->archdata.iommu;
244
245 if (unlikely(direction == DMA_NONE))
246 goto bad;
247
248 oaddr = (unsigned long)ptr;
249 npages = IO_PAGE_ALIGN(oaddr + sz) - (oaddr & IO_PAGE_MASK);
250 npages >>= IO_PAGE_SHIFT;
251
252 spin_lock_irqsave(&iommu->lock, flags);
253 entry = iommu_range_alloc(dev, iommu, npages, NULL);
254 spin_unlock_irqrestore(&iommu->lock, flags);
255
256 if (unlikely(entry == DMA_ERROR_CODE))
257 goto bad;
258
259 bus_addr = (iommu->page_table_map_base +
260 (entry << IO_PAGE_SHIFT));
261 ret = bus_addr | (oaddr & ~IO_PAGE_MASK);
262 base_paddr = __pa(oaddr & IO_PAGE_MASK);
263 prot = HV_PCI_MAP_ATTR_READ;
264 if (direction != DMA_TO_DEVICE)
265 prot |= HV_PCI_MAP_ATTR_WRITE;
266
267 local_irq_save(flags);
268
269 iommu_batch_start(dev, prot, entry);
270
271 for (i = 0; i < npages; i++, base_paddr += IO_PAGE_SIZE) {
272 long err = iommu_batch_add(base_paddr);
273 if (unlikely(err < 0L))
274 goto iommu_map_fail;
275 }
276 if (unlikely(iommu_batch_end() < 0L))
277 goto iommu_map_fail;
278
279 local_irq_restore(flags);
280
281 return ret;
282
283bad:
284 if (printk_ratelimit())
285 WARN_ON(1);
286 return DMA_ERROR_CODE;
287
288iommu_map_fail:
289 /* Interrupts are disabled. */
290 spin_lock(&iommu->lock);
291 iommu_range_free(iommu, bus_addr, npages);
292 spin_unlock_irqrestore(&iommu->lock, flags);
293
294 return DMA_ERROR_CODE;
295}
296
297static void dma_4v_unmap_single(struct device *dev, dma_addr_t bus_addr,
298 size_t sz, enum dma_data_direction direction)
299{
300 struct pci_pbm_info *pbm;
301 struct iommu *iommu;
302 unsigned long flags, npages;
303 long entry;
304 u32 devhandle;
305
306 if (unlikely(direction == DMA_NONE)) {
307 if (printk_ratelimit())
308 WARN_ON(1);
309 return;
310 }
311
312 iommu = dev->archdata.iommu;
313 pbm = dev->archdata.host_controller;
314 devhandle = pbm->devhandle;
315
316 npages = IO_PAGE_ALIGN(bus_addr + sz) - (bus_addr & IO_PAGE_MASK);
317 npages >>= IO_PAGE_SHIFT;
318 bus_addr &= IO_PAGE_MASK;
319
320 spin_lock_irqsave(&iommu->lock, flags);
321
322 iommu_range_free(iommu, bus_addr, npages);
323
324 entry = (bus_addr - iommu->page_table_map_base) >> IO_PAGE_SHIFT;
325 do {
326 unsigned long num;
327
328 num = pci_sun4v_iommu_demap(devhandle, HV_PCI_TSBID(0, entry),
329 npages);
330 entry += num;
331 npages -= num;
332 } while (npages != 0);
333
334 spin_unlock_irqrestore(&iommu->lock, flags);
335}
336
337static int dma_4v_map_sg(struct device *dev, struct scatterlist *sglist,
338 int nelems, enum dma_data_direction direction)
339{
340 struct scatterlist *s, *outs, *segstart;
341 unsigned long flags, handle, prot;
342 dma_addr_t dma_next = 0, dma_addr;
343 unsigned int max_seg_size;
344 unsigned long seg_boundary_size;
345 int outcount, incount, i;
346 struct iommu *iommu;
347 unsigned long base_shift;
348 long err;
349
350 BUG_ON(direction == DMA_NONE);
351
352 iommu = dev->archdata.iommu;
353 if (nelems == 0 || !iommu)
354 return 0;
355
356 prot = HV_PCI_MAP_ATTR_READ;
357 if (direction != DMA_TO_DEVICE)
358 prot |= HV_PCI_MAP_ATTR_WRITE;
359
360 outs = s = segstart = &sglist[0];
361 outcount = 1;
362 incount = nelems;
363 handle = 0;
364
365 /* Init first segment length for backout at failure */
366 outs->dma_length = 0;
367
368 spin_lock_irqsave(&iommu->lock, flags);
369
370 iommu_batch_start(dev, prot, ~0UL);
371
372 max_seg_size = dma_get_max_seg_size(dev);
373 seg_boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1,
374 IO_PAGE_SIZE) >> IO_PAGE_SHIFT;
375 base_shift = iommu->page_table_map_base >> IO_PAGE_SHIFT;
376 for_each_sg(sglist, s, nelems, i) {
377 unsigned long paddr, npages, entry, out_entry = 0, slen;
378
379 slen = s->length;
380 /* Sanity check */
381 if (slen == 0) {
382 dma_next = 0;
383 continue;
384 }
385 /* Allocate iommu entries for that segment */
386 paddr = (unsigned long) SG_ENT_PHYS_ADDRESS(s);
387 npages = iommu_num_pages(paddr, slen, IO_PAGE_SIZE);
388 entry = iommu_range_alloc(dev, iommu, npages, &handle);
389
390 /* Handle failure */
391 if (unlikely(entry == DMA_ERROR_CODE)) {
392 if (printk_ratelimit())
393 printk(KERN_INFO "iommu_alloc failed, iommu %p paddr %lx"
394 " npages %lx\n", iommu, paddr, npages);
395 goto iommu_map_failed;
396 }
397
398 iommu_batch_new_entry(entry);
399
400 /* Convert entry to a dma_addr_t */
401 dma_addr = iommu->page_table_map_base +
402 (entry << IO_PAGE_SHIFT);
403 dma_addr |= (s->offset & ~IO_PAGE_MASK);
404
405 /* Insert into HW table */
406 paddr &= IO_PAGE_MASK;
407 while (npages--) {
408 err = iommu_batch_add(paddr);
409 if (unlikely(err < 0L))
410 goto iommu_map_failed;
411 paddr += IO_PAGE_SIZE;
412 }
413
414 /* If we are in an open segment, try merging */
415 if (segstart != s) {
416 /* We cannot merge if:
417 * - allocated dma_addr isn't contiguous to previous allocation
418 */
419 if ((dma_addr != dma_next) ||
420 (outs->dma_length + s->length > max_seg_size) ||
421 (is_span_boundary(out_entry, base_shift,
422 seg_boundary_size, outs, s))) {
423 /* Can't merge: create a new segment */
424 segstart = s;
425 outcount++;
426 outs = sg_next(outs);
427 } else {
428 outs->dma_length += s->length;
429 }
430 }
431
432 if (segstart == s) {
433 /* This is a new segment, fill entries */
434 outs->dma_address = dma_addr;
435 outs->dma_length = slen;
436 out_entry = entry;
437 }
438
439 /* Calculate next page pointer for contiguous check */
440 dma_next = dma_addr + slen;
441 }
442
443 err = iommu_batch_end();
444
445 if (unlikely(err < 0L))
446 goto iommu_map_failed;
447
448 spin_unlock_irqrestore(&iommu->lock, flags);
449
450 if (outcount < incount) {
451 outs = sg_next(outs);
452 outs->dma_address = DMA_ERROR_CODE;
453 outs->dma_length = 0;
454 }
455
456 return outcount;
457
458iommu_map_failed:
459 for_each_sg(sglist, s, nelems, i) {
460 if (s->dma_length != 0) {
461 unsigned long vaddr, npages;
462
463 vaddr = s->dma_address & IO_PAGE_MASK;
464 npages = iommu_num_pages(s->dma_address, s->dma_length,
465 IO_PAGE_SIZE);
466 iommu_range_free(iommu, vaddr, npages);
467 /* XXX demap? XXX */
468 s->dma_address = DMA_ERROR_CODE;
469 s->dma_length = 0;
470 }
471 if (s == outs)
472 break;
473 }
474 spin_unlock_irqrestore(&iommu->lock, flags);
475
476 return 0;
477}
478
479static void dma_4v_unmap_sg(struct device *dev, struct scatterlist *sglist,
480 int nelems, enum dma_data_direction direction)
481{
482 struct pci_pbm_info *pbm;
483 struct scatterlist *sg;
484 struct iommu *iommu;
485 unsigned long flags;
486 u32 devhandle;
487
488 BUG_ON(direction == DMA_NONE);
489
490 iommu = dev->archdata.iommu;
491 pbm = dev->archdata.host_controller;
492 devhandle = pbm->devhandle;
493
494 spin_lock_irqsave(&iommu->lock, flags);
495
496 sg = sglist;
497 while (nelems--) {
498 dma_addr_t dma_handle = sg->dma_address;
499 unsigned int len = sg->dma_length;
500 unsigned long npages, entry;
501
502 if (!len)
503 break;
504 npages = iommu_num_pages(dma_handle, len, IO_PAGE_SIZE);
505 iommu_range_free(iommu, dma_handle, npages);
506
507 entry = ((dma_handle - iommu->page_table_map_base) >> IO_PAGE_SHIFT);
508 while (npages) {
509 unsigned long num;
510
511 num = pci_sun4v_iommu_demap(devhandle, HV_PCI_TSBID(0, entry),
512 npages);
513 entry += num;
514 npages -= num;
515 }
516
517 sg = sg_next(sg);
518 }
519
520 spin_unlock_irqrestore(&iommu->lock, flags);
521}
522
523static void dma_4v_sync_single_for_cpu(struct device *dev,
524 dma_addr_t bus_addr, size_t sz,
525 enum dma_data_direction direction)
526{
527 /* Nothing to do... */
528}
529
530static void dma_4v_sync_sg_for_cpu(struct device *dev,
531 struct scatterlist *sglist, int nelems,
532 enum dma_data_direction direction)
533{
534 /* Nothing to do... */
535}
536
537static const struct dma_ops sun4v_dma_ops = {
538 .alloc_coherent = dma_4v_alloc_coherent,
539 .free_coherent = dma_4v_free_coherent,
540 .map_single = dma_4v_map_single,
541 .unmap_single = dma_4v_unmap_single,
542 .map_sg = dma_4v_map_sg,
543 .unmap_sg = dma_4v_unmap_sg,
544 .sync_single_for_cpu = dma_4v_sync_single_for_cpu,
545 .sync_sg_for_cpu = dma_4v_sync_sg_for_cpu,
546};
547
548static void __init pci_sun4v_scan_bus(struct pci_pbm_info *pbm,
549 struct device *parent)
550{
551 struct property *prop;
552 struct device_node *dp;
553
554 dp = pbm->op->node;
555 prop = of_find_property(dp, "66mhz-capable", NULL);
556 pbm->is_66mhz_capable = (prop != NULL);
557 pbm->pci_bus = pci_scan_one_pbm(pbm, parent);
558
559 /* XXX register error interrupt handlers XXX */
560}
561
562static unsigned long __init probe_existing_entries(struct pci_pbm_info *pbm,
563 struct iommu *iommu)
564{
565 struct iommu_arena *arena = &iommu->arena;
566 unsigned long i, cnt = 0;
567 u32 devhandle;
568
569 devhandle = pbm->devhandle;
570 for (i = 0; i < arena->limit; i++) {
571 unsigned long ret, io_attrs, ra;
572
573 ret = pci_sun4v_iommu_getmap(devhandle,
574 HV_PCI_TSBID(0, i),
575 &io_attrs, &ra);
576 if (ret == HV_EOK) {
577 if (page_in_phys_avail(ra)) {
578 pci_sun4v_iommu_demap(devhandle,
579 HV_PCI_TSBID(0, i), 1);
580 } else {
581 cnt++;
582 __set_bit(i, arena->map);
583 }
584 }
585 }
586
587 return cnt;
588}
589
590static int __init pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
591{
592 static const u32 vdma_default[] = { 0x80000000, 0x80000000 };
593 struct iommu *iommu = pbm->iommu;
594 unsigned long num_tsb_entries, sz, tsbsize;
595 u32 dma_mask, dma_offset;
596 const u32 *vdma;
597
598 vdma = of_get_property(pbm->op->node, "virtual-dma", NULL);
599 if (!vdma)
600 vdma = vdma_default;
601
602 if ((vdma[0] | vdma[1]) & ~IO_PAGE_MASK) {
603 printk(KERN_ERR PFX "Strange virtual-dma[%08x:%08x].\n",
604 vdma[0], vdma[1]);
605 return -EINVAL;
606 };
607
608 dma_mask = (roundup_pow_of_two(vdma[1]) - 1UL);
609 num_tsb_entries = vdma[1] / IO_PAGE_SIZE;
610 tsbsize = num_tsb_entries * sizeof(iopte_t);
611
612 dma_offset = vdma[0];
613
614 /* Setup initial software IOMMU state. */
615 spin_lock_init(&iommu->lock);
616 iommu->ctx_lowest_free = 1;
617 iommu->page_table_map_base = dma_offset;
618 iommu->dma_addr_mask = dma_mask;
619
620 /* Allocate and initialize the free area map. */
621 sz = (num_tsb_entries + 7) / 8;
622 sz = (sz + 7UL) & ~7UL;
623 iommu->arena.map = kzalloc(sz, GFP_KERNEL);
624 if (!iommu->arena.map) {
625 printk(KERN_ERR PFX "Error, kmalloc(arena.map) failed.\n");
626 return -ENOMEM;
627 }
628 iommu->arena.limit = num_tsb_entries;
629
630 sz = probe_existing_entries(pbm, iommu);
631 if (sz)
632 printk("%s: Imported %lu TSB entries from OBP\n",
633 pbm->name, sz);
634
635 return 0;
636}
637
638#ifdef CONFIG_PCI_MSI
639struct pci_sun4v_msiq_entry {
640 u64 version_type;
641#define MSIQ_VERSION_MASK 0xffffffff00000000UL
642#define MSIQ_VERSION_SHIFT 32
643#define MSIQ_TYPE_MASK 0x00000000000000ffUL
644#define MSIQ_TYPE_SHIFT 0
645#define MSIQ_TYPE_NONE 0x00
646#define MSIQ_TYPE_MSG 0x01
647#define MSIQ_TYPE_MSI32 0x02
648#define MSIQ_TYPE_MSI64 0x03
649#define MSIQ_TYPE_INTX 0x08
650#define MSIQ_TYPE_NONE2 0xff
651
652 u64 intx_sysino;
653 u64 reserved1;
654 u64 stick;
655 u64 req_id; /* bus/device/func */
656#define MSIQ_REQID_BUS_MASK 0xff00UL
657#define MSIQ_REQID_BUS_SHIFT 8
658#define MSIQ_REQID_DEVICE_MASK 0x00f8UL
659#define MSIQ_REQID_DEVICE_SHIFT 3
660#define MSIQ_REQID_FUNC_MASK 0x0007UL
661#define MSIQ_REQID_FUNC_SHIFT 0
662
663 u64 msi_address;
664
665 /* The format of this value is message type dependent.
666 * For MSI bits 15:0 are the data from the MSI packet.
667 * For MSI-X bits 31:0 are the data from the MSI packet.
668 * For MSG, the message code and message routing code where:
669 * bits 39:32 is the bus/device/fn of the msg target-id
670 * bits 18:16 is the message routing code
671 * bits 7:0 is the message code
672 * For INTx the low order 2-bits are:
673 * 00 - INTA
674 * 01 - INTB
675 * 10 - INTC
676 * 11 - INTD
677 */
678 u64 msi_data;
679
680 u64 reserved2;
681};
682
683static int pci_sun4v_get_head(struct pci_pbm_info *pbm, unsigned long msiqid,
684 unsigned long *head)
685{
686 unsigned long err, limit;
687
688 err = pci_sun4v_msiq_gethead(pbm->devhandle, msiqid, head);
689 if (unlikely(err))
690 return -ENXIO;
691
692 limit = pbm->msiq_ent_count * sizeof(struct pci_sun4v_msiq_entry);
693 if (unlikely(*head >= limit))
694 return -EFBIG;
695
696 return 0;
697}
698
699static int pci_sun4v_dequeue_msi(struct pci_pbm_info *pbm,
700 unsigned long msiqid, unsigned long *head,
701 unsigned long *msi)
702{
703 struct pci_sun4v_msiq_entry *ep;
704 unsigned long err, type;
705
706 /* Note: void pointer arithmetic, 'head' is a byte offset */
707 ep = (pbm->msi_queues + ((msiqid - pbm->msiq_first) *
708 (pbm->msiq_ent_count *
709 sizeof(struct pci_sun4v_msiq_entry))) +
710 *head);
711
712 if ((ep->version_type & MSIQ_TYPE_MASK) == 0)
713 return 0;
714
715 type = (ep->version_type & MSIQ_TYPE_MASK) >> MSIQ_TYPE_SHIFT;
716 if (unlikely(type != MSIQ_TYPE_MSI32 &&
717 type != MSIQ_TYPE_MSI64))
718 return -EINVAL;
719
720 *msi = ep->msi_data;
721
722 err = pci_sun4v_msi_setstate(pbm->devhandle,
723 ep->msi_data /* msi_num */,
724 HV_MSISTATE_IDLE);
725 if (unlikely(err))
726 return -ENXIO;
727
728 /* Clear the entry. */
729 ep->version_type &= ~MSIQ_TYPE_MASK;
730
731 (*head) += sizeof(struct pci_sun4v_msiq_entry);
732 if (*head >=
733 (pbm->msiq_ent_count * sizeof(struct pci_sun4v_msiq_entry)))
734 *head = 0;
735
736 return 1;
737}
738
739static int pci_sun4v_set_head(struct pci_pbm_info *pbm, unsigned long msiqid,
740 unsigned long head)
741{
742 unsigned long err;
743
744 err = pci_sun4v_msiq_sethead(pbm->devhandle, msiqid, head);
745 if (unlikely(err))
746 return -EINVAL;
747
748 return 0;
749}
750
751static int pci_sun4v_msi_setup(struct pci_pbm_info *pbm, unsigned long msiqid,
752 unsigned long msi, int is_msi64)
753{
754 if (pci_sun4v_msi_setmsiq(pbm->devhandle, msi, msiqid,
755 (is_msi64 ?
756 HV_MSITYPE_MSI64 : HV_MSITYPE_MSI32)))
757 return -ENXIO;
758 if (pci_sun4v_msi_setstate(pbm->devhandle, msi, HV_MSISTATE_IDLE))
759 return -ENXIO;
760 if (pci_sun4v_msi_setvalid(pbm->devhandle, msi, HV_MSIVALID_VALID))
761 return -ENXIO;
762 return 0;
763}
764
765static int pci_sun4v_msi_teardown(struct pci_pbm_info *pbm, unsigned long msi)
766{
767 unsigned long err, msiqid;
768
769 err = pci_sun4v_msi_getmsiq(pbm->devhandle, msi, &msiqid);
770 if (err)
771 return -ENXIO;
772
773 pci_sun4v_msi_setvalid(pbm->devhandle, msi, HV_MSIVALID_INVALID);
774
775 return 0;
776}
777
778static int pci_sun4v_msiq_alloc(struct pci_pbm_info *pbm)
779{
780 unsigned long q_size, alloc_size, pages, order;
781 int i;
782
783 q_size = pbm->msiq_ent_count * sizeof(struct pci_sun4v_msiq_entry);
784 alloc_size = (pbm->msiq_num * q_size);
785 order = get_order(alloc_size);
786 pages = __get_free_pages(GFP_KERNEL | __GFP_COMP, order);
787 if (pages == 0UL) {
788 printk(KERN_ERR "MSI: Cannot allocate MSI queues (o=%lu).\n",
789 order);
790 return -ENOMEM;
791 }
792 memset((char *)pages, 0, PAGE_SIZE << order);
793 pbm->msi_queues = (void *) pages;
794
795 for (i = 0; i < pbm->msiq_num; i++) {
796 unsigned long err, base = __pa(pages + (i * q_size));
797 unsigned long ret1, ret2;
798
799 err = pci_sun4v_msiq_conf(pbm->devhandle,
800 pbm->msiq_first + i,
801 base, pbm->msiq_ent_count);
802 if (err) {
803 printk(KERN_ERR "MSI: msiq register fails (err=%lu)\n",
804 err);
805 goto h_error;
806 }
807
808 err = pci_sun4v_msiq_info(pbm->devhandle,
809 pbm->msiq_first + i,
810 &ret1, &ret2);
811 if (err) {
812 printk(KERN_ERR "MSI: Cannot read msiq (err=%lu)\n",
813 err);
814 goto h_error;
815 }
816 if (ret1 != base || ret2 != pbm->msiq_ent_count) {
817 printk(KERN_ERR "MSI: Bogus qconf "
818 "expected[%lx:%x] got[%lx:%lx]\n",
819 base, pbm->msiq_ent_count,
820 ret1, ret2);
821 goto h_error;
822 }
823 }
824
825 return 0;
826
827h_error:
828 free_pages(pages, order);
829 return -EINVAL;
830}
831
832static void pci_sun4v_msiq_free(struct pci_pbm_info *pbm)
833{
834 unsigned long q_size, alloc_size, pages, order;
835 int i;
836
837 for (i = 0; i < pbm->msiq_num; i++) {
838 unsigned long msiqid = pbm->msiq_first + i;
839
840 (void) pci_sun4v_msiq_conf(pbm->devhandle, msiqid, 0UL, 0);
841 }
842
843 q_size = pbm->msiq_ent_count * sizeof(struct pci_sun4v_msiq_entry);
844 alloc_size = (pbm->msiq_num * q_size);
845 order = get_order(alloc_size);
846
847 pages = (unsigned long) pbm->msi_queues;
848
849 free_pages(pages, order);
850
851 pbm->msi_queues = NULL;
852}
853
854static int pci_sun4v_msiq_build_irq(struct pci_pbm_info *pbm,
855 unsigned long msiqid,
856 unsigned long devino)
857{
858 unsigned int virt_irq = sun4v_build_irq(pbm->devhandle, devino);
859
860 if (!virt_irq)
861 return -ENOMEM;
862
863 if (pci_sun4v_msiq_setstate(pbm->devhandle, msiqid, HV_MSIQSTATE_IDLE))
864 return -EINVAL;
865 if (pci_sun4v_msiq_setvalid(pbm->devhandle, msiqid, HV_MSIQ_VALID))
866 return -EINVAL;
867
868 return virt_irq;
869}
870
871static const struct sparc64_msiq_ops pci_sun4v_msiq_ops = {
872 .get_head = pci_sun4v_get_head,
873 .dequeue_msi = pci_sun4v_dequeue_msi,
874 .set_head = pci_sun4v_set_head,
875 .msi_setup = pci_sun4v_msi_setup,
876 .msi_teardown = pci_sun4v_msi_teardown,
877 .msiq_alloc = pci_sun4v_msiq_alloc,
878 .msiq_free = pci_sun4v_msiq_free,
879 .msiq_build_irq = pci_sun4v_msiq_build_irq,
880};
881
882static void pci_sun4v_msi_init(struct pci_pbm_info *pbm)
883{
884 sparc64_pbm_msi_init(pbm, &pci_sun4v_msiq_ops);
885}
886#else /* CONFIG_PCI_MSI */
887static void pci_sun4v_msi_init(struct pci_pbm_info *pbm)
888{
889}
890#endif /* !(CONFIG_PCI_MSI) */
891
892static int __init pci_sun4v_pbm_init(struct pci_pbm_info *pbm,
893 struct of_device *op, u32 devhandle)
894{
895 struct device_node *dp = op->node;
896 int err;
897
898 pbm->numa_node = of_node_to_nid(dp);
899
900 pbm->pci_ops = &sun4v_pci_ops;
901 pbm->config_space_reg_bits = 12;
902
903 pbm->index = pci_num_pbms++;
904
905 pbm->op = op;
906
907 pbm->devhandle = devhandle;
908
909 pbm->name = dp->full_name;
910
911 printk("%s: SUN4V PCI Bus Module\n", pbm->name);
912 printk("%s: On NUMA node %d\n", pbm->name, pbm->numa_node);
913
914 pci_determine_mem_io_space(pbm);
915
916 pci_get_pbm_props(pbm);
917
918 err = pci_sun4v_iommu_init(pbm);
919 if (err)
920 return err;
921
922 pci_sun4v_msi_init(pbm);
923
924 pci_sun4v_scan_bus(pbm, &op->dev);
925
926 pbm->next = pci_pbm_root;
927 pci_pbm_root = pbm;
928
929 return 0;
930}
931
932static int __devinit pci_sun4v_probe(struct of_device *op,
933 const struct of_device_id *match)
934{
935 const struct linux_prom64_registers *regs;
936 static int hvapi_negotiated = 0;
937 struct pci_pbm_info *pbm;
938 struct device_node *dp;
939 struct iommu *iommu;
940 u32 devhandle;
941 int i, err;
942
943 dp = op->node;
944
945 if (!hvapi_negotiated++) {
946 err = sun4v_hvapi_register(HV_GRP_PCI,
947 vpci_major,
948 &vpci_minor);
949
950 if (err) {
951 printk(KERN_ERR PFX "Could not register hvapi, "
952 "err=%d\n", err);
953 return err;
954 }
955 printk(KERN_INFO PFX "Registered hvapi major[%lu] minor[%lu]\n",
956 vpci_major, vpci_minor);
957
958 dma_ops = &sun4v_dma_ops;
959 }
960
961 regs = of_get_property(dp, "reg", NULL);
962 err = -ENODEV;
963 if (!regs) {
964 printk(KERN_ERR PFX "Could not find config registers\n");
965 goto out_err;
966 }
967 devhandle = (regs->phys_addr >> 32UL) & 0x0fffffff;
968
969 err = -ENOMEM;
970 if (!iommu_batch_initialized) {
971 for_each_possible_cpu(i) {
972 unsigned long page = get_zeroed_page(GFP_KERNEL);
973
974 if (!page)
975 goto out_err;
976
977 per_cpu(iommu_batch, i).pglist = (u64 *) page;
978 }
979 iommu_batch_initialized = 1;
980 }
981
982 pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
983 if (!pbm) {
984 printk(KERN_ERR PFX "Could not allocate pci_pbm_info\n");
985 goto out_err;
986 }
987
988 iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL);
989 if (!iommu) {
990 printk(KERN_ERR PFX "Could not allocate pbm iommu\n");
991 goto out_free_controller;
992 }
993
994 pbm->iommu = iommu;
995
996 err = pci_sun4v_pbm_init(pbm, op, devhandle);
997 if (err)
998 goto out_free_iommu;
999
1000 dev_set_drvdata(&op->dev, pbm);
1001
1002 return 0;
1003
1004out_free_iommu:
1005 kfree(pbm->iommu);
1006
1007out_free_controller:
1008 kfree(pbm);
1009
1010out_err:
1011 return err;
1012}
1013
1014static struct of_device_id __initdata pci_sun4v_match[] = {
1015 {
1016 .name = "pci",
1017 .compatible = "SUNW,sun4v-pci",
1018 },
1019 {},
1020};
1021
1022static struct of_platform_driver pci_sun4v_driver = {
1023 .name = DRIVER_NAME,
1024 .match_table = pci_sun4v_match,
1025 .probe = pci_sun4v_probe,
1026};
1027
1028static int __init pci_sun4v_init(void)
1029{
1030 return of_register_driver(&pci_sun4v_driver, &of_bus_type);
1031}
1032
1033subsys_initcall(pci_sun4v_init);
diff --git a/arch/sparc/kernel/pci_sun4v.h b/arch/sparc/kernel/pci_sun4v.h
new file mode 100644
index 000000000000..8e9fc3a5b4f5
--- /dev/null
+++ b/arch/sparc/kernel/pci_sun4v.h
@@ -0,0 +1,92 @@
1/* pci_sun4v.h: SUN4V specific PCI controller support.
2 *
3 * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
4 */
5
6#ifndef _PCI_SUN4V_H
7#define _PCI_SUN4V_H
8
9extern long pci_sun4v_iommu_map(unsigned long devhandle,
10 unsigned long tsbid,
11 unsigned long num_ttes,
12 unsigned long io_attributes,
13 unsigned long io_page_list_pa);
14extern unsigned long pci_sun4v_iommu_demap(unsigned long devhandle,
15 unsigned long tsbid,
16 unsigned long num_ttes);
17extern unsigned long pci_sun4v_iommu_getmap(unsigned long devhandle,
18 unsigned long tsbid,
19 unsigned long *io_attributes,
20 unsigned long *real_address);
21extern unsigned long pci_sun4v_config_get(unsigned long devhandle,
22 unsigned long pci_device,
23 unsigned long config_offset,
24 unsigned long size);
25extern int pci_sun4v_config_put(unsigned long devhandle,
26 unsigned long pci_device,
27 unsigned long config_offset,
28 unsigned long size,
29 unsigned long data);
30
31extern unsigned long pci_sun4v_msiq_conf(unsigned long devhandle,
32 unsigned long msiqid,
33 unsigned long msiq_paddr,
34 unsigned long num_entries);
35extern unsigned long pci_sun4v_msiq_info(unsigned long devhandle,
36 unsigned long msiqid,
37 unsigned long *msiq_paddr,
38 unsigned long *num_entries);
39extern unsigned long pci_sun4v_msiq_getvalid(unsigned long devhandle,
40 unsigned long msiqid,
41 unsigned long *valid);
42extern unsigned long pci_sun4v_msiq_setvalid(unsigned long devhandle,
43 unsigned long msiqid,
44 unsigned long valid);
45extern unsigned long pci_sun4v_msiq_getstate(unsigned long devhandle,
46 unsigned long msiqid,
47 unsigned long *state);
48extern unsigned long pci_sun4v_msiq_setstate(unsigned long devhandle,
49 unsigned long msiqid,
50 unsigned long state);
51extern unsigned long pci_sun4v_msiq_gethead(unsigned long devhandle,
52 unsigned long msiqid,
53 unsigned long *head);
54extern unsigned long pci_sun4v_msiq_sethead(unsigned long devhandle,
55 unsigned long msiqid,
56 unsigned long head);
57extern unsigned long pci_sun4v_msiq_gettail(unsigned long devhandle,
58 unsigned long msiqid,
59 unsigned long *head);
60extern unsigned long pci_sun4v_msi_getvalid(unsigned long devhandle,
61 unsigned long msinum,
62 unsigned long *valid);
63extern unsigned long pci_sun4v_msi_setvalid(unsigned long devhandle,
64 unsigned long msinum,
65 unsigned long valid);
66extern unsigned long pci_sun4v_msi_getmsiq(unsigned long devhandle,
67 unsigned long msinum,
68 unsigned long *msiq);
69extern unsigned long pci_sun4v_msi_setmsiq(unsigned long devhandle,
70 unsigned long msinum,
71 unsigned long msiq,
72 unsigned long msitype);
73extern unsigned long pci_sun4v_msi_getstate(unsigned long devhandle,
74 unsigned long msinum,
75 unsigned long *state);
76extern unsigned long pci_sun4v_msi_setstate(unsigned long devhandle,
77 unsigned long msinum,
78 unsigned long state);
79extern unsigned long pci_sun4v_msg_getmsiq(unsigned long devhandle,
80 unsigned long msinum,
81 unsigned long *msiq);
82extern unsigned long pci_sun4v_msg_setmsiq(unsigned long devhandle,
83 unsigned long msinum,
84 unsigned long msiq);
85extern unsigned long pci_sun4v_msg_getvalid(unsigned long devhandle,
86 unsigned long msinum,
87 unsigned long *valid);
88extern unsigned long pci_sun4v_msg_setvalid(unsigned long devhandle,
89 unsigned long msinum,
90 unsigned long valid);
91
92#endif /* !(_PCI_SUN4V_H) */
diff --git a/arch/sparc/kernel/pci_sun4v_asm.S b/arch/sparc/kernel/pci_sun4v_asm.S
new file mode 100644
index 000000000000..e606d46c6815
--- /dev/null
+++ b/arch/sparc/kernel/pci_sun4v_asm.S
@@ -0,0 +1,362 @@
1/* pci_sun4v_asm: Hypervisor calls for PCI support.
2 *
3 * Copyright (C) 2006, 2008 David S. Miller <davem@davemloft.net>
4 */
5
6#include <linux/linkage.h>
7#include <asm/hypervisor.h>
8
9 /* %o0: devhandle
10 * %o1: tsbid
11 * %o2: num ttes
12 * %o3: io_attributes
13 * %o4: io_page_list phys address
14 *
15 * returns %o0: -status if status was non-zero, else
16 * %o0: num pages mapped
17 */
18ENTRY(pci_sun4v_iommu_map)
19 mov %o5, %g1
20 mov HV_FAST_PCI_IOMMU_MAP, %o5
21 ta HV_FAST_TRAP
22 brnz,pn %o0, 1f
23 sub %g0, %o0, %o0
24 mov %o1, %o0
251: retl
26 nop
27ENDPROC(pci_sun4v_iommu_map)
28
29 /* %o0: devhandle
30 * %o1: tsbid
31 * %o2: num ttes
32 *
33 * returns %o0: num ttes demapped
34 */
35ENTRY(pci_sun4v_iommu_demap)
36 mov HV_FAST_PCI_IOMMU_DEMAP, %o5
37 ta HV_FAST_TRAP
38 retl
39 mov %o1, %o0
40ENDPROC(pci_sun4v_iommu_demap)
41
42 /* %o0: devhandle
43 * %o1: tsbid
44 * %o2: &io_attributes
45 * %o3: &real_address
46 *
47 * returns %o0: status
48 */
49ENTRY(pci_sun4v_iommu_getmap)
50 mov %o2, %o4
51 mov HV_FAST_PCI_IOMMU_GETMAP, %o5
52 ta HV_FAST_TRAP
53 stx %o1, [%o4]
54 stx %o2, [%o3]
55 retl
56 mov %o0, %o0
57ENDPROC(pci_sun4v_iommu_getmap)
58
59 /* %o0: devhandle
60 * %o1: pci_device
61 * %o2: pci_config_offset
62 * %o3: size
63 *
64 * returns %o0: data
65 *
66 * If there is an error, the data will be returned
67 * as all 1's.
68 */
69ENTRY(pci_sun4v_config_get)
70 mov HV_FAST_PCI_CONFIG_GET, %o5
71 ta HV_FAST_TRAP
72 brnz,a,pn %o1, 1f
73 mov -1, %o2
741: retl
75 mov %o2, %o0
76ENDPROC(pci_sun4v_config_get)
77
78 /* %o0: devhandle
79 * %o1: pci_device
80 * %o2: pci_config_offset
81 * %o3: size
82 * %o4: data
83 *
84 * returns %o0: status
85 *
86 * status will be zero if the operation completed
87 * successfully, else -1 if not
88 */
89ENTRY(pci_sun4v_config_put)
90 mov HV_FAST_PCI_CONFIG_PUT, %o5
91 ta HV_FAST_TRAP
92 brnz,a,pn %o1, 1f
93 mov -1, %o1
941: retl
95 mov %o1, %o0
96ENDPROC(pci_sun4v_config_put)
97
98 /* %o0: devhandle
99 * %o1: msiqid
100 * %o2: msiq phys address
101 * %o3: num entries
102 *
103 * returns %o0: status
104 *
105 * status will be zero if the operation completed
106 * successfully, else -1 if not
107 */
108ENTRY(pci_sun4v_msiq_conf)
109 mov HV_FAST_PCI_MSIQ_CONF, %o5
110 ta HV_FAST_TRAP
111 retl
112 mov %o0, %o0
113ENDPROC(pci_sun4v_msiq_conf)
114
115 /* %o0: devhandle
116 * %o1: msiqid
117 * %o2: &msiq_phys_addr
118 * %o3: &msiq_num_entries
119 *
120 * returns %o0: status
121 */
122ENTRY(pci_sun4v_msiq_info)
123 mov %o2, %o4
124 mov HV_FAST_PCI_MSIQ_INFO, %o5
125 ta HV_FAST_TRAP
126 stx %o1, [%o4]
127 stx %o2, [%o3]
128 retl
129 mov %o0, %o0
130ENDPROC(pci_sun4v_msiq_info)
131
132 /* %o0: devhandle
133 * %o1: msiqid
134 * %o2: &valid
135 *
136 * returns %o0: status
137 */
138ENTRY(pci_sun4v_msiq_getvalid)
139 mov HV_FAST_PCI_MSIQ_GETVALID, %o5
140 ta HV_FAST_TRAP
141 stx %o1, [%o2]
142 retl
143 mov %o0, %o0
144ENDPROC(pci_sun4v_msiq_getvalid)
145
146 /* %o0: devhandle
147 * %o1: msiqid
148 * %o2: valid
149 *
150 * returns %o0: status
151 */
152ENTRY(pci_sun4v_msiq_setvalid)
153 mov HV_FAST_PCI_MSIQ_SETVALID, %o5
154 ta HV_FAST_TRAP
155 retl
156 mov %o0, %o0
157ENDPROC(pci_sun4v_msiq_setvalid)
158
159 /* %o0: devhandle
160 * %o1: msiqid
161 * %o2: &state
162 *
163 * returns %o0: status
164 */
165ENTRY(pci_sun4v_msiq_getstate)
166 mov HV_FAST_PCI_MSIQ_GETSTATE, %o5
167 ta HV_FAST_TRAP
168 stx %o1, [%o2]
169 retl
170 mov %o0, %o0
171ENDPROC(pci_sun4v_msiq_getstate)
172
173 /* %o0: devhandle
174 * %o1: msiqid
175 * %o2: state
176 *
177 * returns %o0: status
178 */
179ENTRY(pci_sun4v_msiq_setstate)
180 mov HV_FAST_PCI_MSIQ_SETSTATE, %o5
181 ta HV_FAST_TRAP
182 retl
183 mov %o0, %o0
184ENDPROC(pci_sun4v_msiq_setstate)
185
186 /* %o0: devhandle
187 * %o1: msiqid
188 * %o2: &head
189 *
190 * returns %o0: status
191 */
192ENTRY(pci_sun4v_msiq_gethead)
193 mov HV_FAST_PCI_MSIQ_GETHEAD, %o5
194 ta HV_FAST_TRAP
195 stx %o1, [%o2]
196 retl
197 mov %o0, %o0
198ENDPROC(pci_sun4v_msiq_gethead)
199
200 /* %o0: devhandle
201 * %o1: msiqid
202 * %o2: head
203 *
204 * returns %o0: status
205 */
206ENTRY(pci_sun4v_msiq_sethead)
207 mov HV_FAST_PCI_MSIQ_SETHEAD, %o5
208 ta HV_FAST_TRAP
209 retl
210 mov %o0, %o0
211ENDPROC(pci_sun4v_msiq_sethead)
212
213 /* %o0: devhandle
214 * %o1: msiqid
215 * %o2: &tail
216 *
217 * returns %o0: status
218 */
219ENTRY(pci_sun4v_msiq_gettail)
220 mov HV_FAST_PCI_MSIQ_GETTAIL, %o5
221 ta HV_FAST_TRAP
222 stx %o1, [%o2]
223 retl
224 mov %o0, %o0
225ENDPROC(pci_sun4v_msiq_gettail)
226
227 /* %o0: devhandle
228 * %o1: msinum
229 * %o2: &valid
230 *
231 * returns %o0: status
232 */
233ENTRY(pci_sun4v_msi_getvalid)
234 mov HV_FAST_PCI_MSI_GETVALID, %o5
235 ta HV_FAST_TRAP
236 stx %o1, [%o2]
237 retl
238 mov %o0, %o0
239ENDPROC(pci_sun4v_msi_getvalid)
240
241 /* %o0: devhandle
242 * %o1: msinum
243 * %o2: valid
244 *
245 * returns %o0: status
246 */
247ENTRY(pci_sun4v_msi_setvalid)
248 mov HV_FAST_PCI_MSI_SETVALID, %o5
249 ta HV_FAST_TRAP
250 retl
251 mov %o0, %o0
252ENDPROC(pci_sun4v_msi_setvalid)
253
254 /* %o0: devhandle
255 * %o1: msinum
256 * %o2: &msiq
257 *
258 * returns %o0: status
259 */
260ENTRY(pci_sun4v_msi_getmsiq)
261 mov HV_FAST_PCI_MSI_GETMSIQ, %o5
262 ta HV_FAST_TRAP
263 stx %o1, [%o2]
264 retl
265 mov %o0, %o0
266ENDPROC(pci_sun4v_msi_getmsiq)
267
268 /* %o0: devhandle
269 * %o1: msinum
270 * %o2: msitype
271 * %o3: msiq
272 *
273 * returns %o0: status
274 */
275ENTRY(pci_sun4v_msi_setmsiq)
276 mov HV_FAST_PCI_MSI_SETMSIQ, %o5
277 ta HV_FAST_TRAP
278 retl
279 mov %o0, %o0
280ENDPROC(pci_sun4v_msi_setmsiq)
281
282 /* %o0: devhandle
283 * %o1: msinum
284 * %o2: &state
285 *
286 * returns %o0: status
287 */
288ENTRY(pci_sun4v_msi_getstate)
289 mov HV_FAST_PCI_MSI_GETSTATE, %o5
290 ta HV_FAST_TRAP
291 stx %o1, [%o2]
292 retl
293 mov %o0, %o0
294ENDPROC(pci_sun4v_msi_getstate)
295
296 /* %o0: devhandle
297 * %o1: msinum
298 * %o2: state
299 *
300 * returns %o0: status
301 */
302ENTRY(pci_sun4v_msi_setstate)
303 mov HV_FAST_PCI_MSI_SETSTATE, %o5
304 ta HV_FAST_TRAP
305 retl
306 mov %o0, %o0
307ENDPROC(pci_sun4v_msi_setstate)
308
309 /* %o0: devhandle
310 * %o1: msinum
311 * %o2: &msiq
312 *
313 * returns %o0: status
314 */
315ENTRY(pci_sun4v_msg_getmsiq)
316 mov HV_FAST_PCI_MSG_GETMSIQ, %o5
317 ta HV_FAST_TRAP
318 stx %o1, [%o2]
319 retl
320 mov %o0, %o0
321ENDPROC(pci_sun4v_msg_getmsiq)
322
323 /* %o0: devhandle
324 * %o1: msinum
325 * %o2: msiq
326 *
327 * returns %o0: status
328 */
329ENTRY(pci_sun4v_msg_setmsiq)
330 mov HV_FAST_PCI_MSG_SETMSIQ, %o5
331 ta HV_FAST_TRAP
332 retl
333 mov %o0, %o0
334ENDPROC(pci_sun4v_msg_setmsiq)
335
336 /* %o0: devhandle
337 * %o1: msinum
338 * %o2: &valid
339 *
340 * returns %o0: status
341 */
342ENTRY(pci_sun4v_msg_getvalid)
343 mov HV_FAST_PCI_MSG_GETVALID, %o5
344 ta HV_FAST_TRAP
345 stx %o1, [%o2]
346 retl
347 mov %o0, %o0
348ENDPROC(pci_sun4v_msg_getvalid)
349
350 /* %o0: devhandle
351 * %o1: msinum
352 * %o2: valid
353 *
354 * returns %o0: status
355 */
356ENTRY(pci_sun4v_msg_setvalid)
357 mov HV_FAST_PCI_MSG_SETVALID, %o5
358 ta HV_FAST_TRAP
359 retl
360 mov %o0, %o0
361ENDPROC(pci_sun4v_msg_setvalid)
362
diff --git a/arch/sparc/kernel/power.c b/arch/sparc/kernel/power.c
new file mode 100644
index 000000000000..076cad7f9757
--- /dev/null
+++ b/arch/sparc/kernel/power.c
@@ -0,0 +1,75 @@
1/* power.c: Power management driver.
2 *
3 * Copyright (C) 1999, 2007, 2008 David S. Miller (davem@davemloft.net)
4 */
5
6#include <linux/kernel.h>
7#include <linux/module.h>
8#include <linux/init.h>
9#include <linux/interrupt.h>
10#include <linux/reboot.h>
11#include <linux/of_device.h>
12
13#include <asm/prom.h>
14#include <asm/io.h>
15
16static void __iomem *power_reg;
17
18static irqreturn_t power_handler(int irq, void *dev_id)
19{
20 orderly_poweroff(true);
21
22 /* FIXME: Check registers for status... */
23 return IRQ_HANDLED;
24}
25
26static int __init has_button_interrupt(unsigned int irq, struct device_node *dp)
27{
28 if (irq == 0xffffffff)
29 return 0;
30 if (!of_find_property(dp, "button", NULL))
31 return 0;
32
33 return 1;
34}
35
36static int __devinit power_probe(struct of_device *op, const struct of_device_id *match)
37{
38 struct resource *res = &op->resource[0];
39 unsigned int irq= op->irqs[0];
40
41 power_reg = of_ioremap(res, 0, 0x4, "power");
42
43 printk(KERN_INFO "%s: Control reg at %lx\n",
44 op->node->name, res->start);
45
46 if (has_button_interrupt(irq, op->node)) {
47 if (request_irq(irq,
48 power_handler, 0, "power", NULL) < 0)
49 printk(KERN_ERR "power: Cannot setup IRQ handler.\n");
50 }
51
52 return 0;
53}
54
55static struct of_device_id __initdata power_match[] = {
56 {
57 .name = "power",
58 },
59 {},
60};
61
62static struct of_platform_driver power_driver = {
63 .match_table = power_match,
64 .probe = power_probe,
65 .driver = {
66 .name = "power",
67 },
68};
69
70static int __init power_init(void)
71{
72 return of_register_driver(&power_driver, &of_platform_bus_type);
73}
74
75device_initcall(power_init);
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
new file mode 100644
index 000000000000..d5e2acef9877
--- /dev/null
+++ b/arch/sparc/kernel/process_64.c
@@ -0,0 +1,812 @@
1/* arch/sparc64/kernel/process.c
2 *
3 * Copyright (C) 1995, 1996, 2008 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
5 * Copyright (C) 1997, 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 */
7
8/*
9 * This file handles the architecture-dependent parts of process handling..
10 */
11
12#include <stdarg.h>
13
14#include <linux/errno.h>
15#include <linux/module.h>
16#include <linux/sched.h>
17#include <linux/kernel.h>
18#include <linux/mm.h>
19#include <linux/fs.h>
20#include <linux/smp.h>
21#include <linux/stddef.h>
22#include <linux/ptrace.h>
23#include <linux/slab.h>
24#include <linux/user.h>
25#include <linux/delay.h>
26#include <linux/compat.h>
27#include <linux/tick.h>
28#include <linux/init.h>
29#include <linux/cpu.h>
30#include <linux/elfcore.h>
31#include <linux/sysrq.h>
32
33#include <asm/uaccess.h>
34#include <asm/system.h>
35#include <asm/page.h>
36#include <asm/pgalloc.h>
37#include <asm/pgtable.h>
38#include <asm/processor.h>
39#include <asm/pstate.h>
40#include <asm/elf.h>
41#include <asm/fpumacro.h>
42#include <asm/head.h>
43#include <asm/cpudata.h>
44#include <asm/mmu_context.h>
45#include <asm/unistd.h>
46#include <asm/hypervisor.h>
47#include <asm/syscalls.h>
48#include <asm/irq_regs.h>
49#include <asm/smp.h>
50
51#include "kstack.h"
52
53static void sparc64_yield(int cpu)
54{
55 if (tlb_type != hypervisor)
56 return;
57
58 clear_thread_flag(TIF_POLLING_NRFLAG);
59 smp_mb__after_clear_bit();
60
61 while (!need_resched() && !cpu_is_offline(cpu)) {
62 unsigned long pstate;
63
64 /* Disable interrupts. */
65 __asm__ __volatile__(
66 "rdpr %%pstate, %0\n\t"
67 "andn %0, %1, %0\n\t"
68 "wrpr %0, %%g0, %%pstate"
69 : "=&r" (pstate)
70 : "i" (PSTATE_IE));
71
72 if (!need_resched() && !cpu_is_offline(cpu))
73 sun4v_cpu_yield();
74
75 /* Re-enable interrupts. */
76 __asm__ __volatile__(
77 "rdpr %%pstate, %0\n\t"
78 "or %0, %1, %0\n\t"
79 "wrpr %0, %%g0, %%pstate"
80 : "=&r" (pstate)
81 : "i" (PSTATE_IE));
82 }
83
84 set_thread_flag(TIF_POLLING_NRFLAG);
85}
86
87/* The idle loop on sparc64. */
88void cpu_idle(void)
89{
90 int cpu = smp_processor_id();
91
92 set_thread_flag(TIF_POLLING_NRFLAG);
93
94 while(1) {
95 tick_nohz_stop_sched_tick(1);
96
97 while (!need_resched() && !cpu_is_offline(cpu))
98 sparc64_yield(cpu);
99
100 tick_nohz_restart_sched_tick();
101
102 preempt_enable_no_resched();
103
104#ifdef CONFIG_HOTPLUG_CPU
105 if (cpu_is_offline(cpu))
106 cpu_play_dead();
107#endif
108
109 schedule();
110 preempt_disable();
111 }
112}
113
114#ifdef CONFIG_COMPAT
115static void show_regwindow32(struct pt_regs *regs)
116{
117 struct reg_window32 __user *rw;
118 struct reg_window32 r_w;
119 mm_segment_t old_fs;
120
121 __asm__ __volatile__ ("flushw");
122 rw = compat_ptr((unsigned)regs->u_regs[14]);
123 old_fs = get_fs();
124 set_fs (USER_DS);
125 if (copy_from_user (&r_w, rw, sizeof(r_w))) {
126 set_fs (old_fs);
127 return;
128 }
129
130 set_fs (old_fs);
131 printk("l0: %08x l1: %08x l2: %08x l3: %08x "
132 "l4: %08x l5: %08x l6: %08x l7: %08x\n",
133 r_w.locals[0], r_w.locals[1], r_w.locals[2], r_w.locals[3],
134 r_w.locals[4], r_w.locals[5], r_w.locals[6], r_w.locals[7]);
135 printk("i0: %08x i1: %08x i2: %08x i3: %08x "
136 "i4: %08x i5: %08x i6: %08x i7: %08x\n",
137 r_w.ins[0], r_w.ins[1], r_w.ins[2], r_w.ins[3],
138 r_w.ins[4], r_w.ins[5], r_w.ins[6], r_w.ins[7]);
139}
140#else
141#define show_regwindow32(regs) do { } while (0)
142#endif
143
144static void show_regwindow(struct pt_regs *regs)
145{
146 struct reg_window __user *rw;
147 struct reg_window *rwk;
148 struct reg_window r_w;
149 mm_segment_t old_fs;
150
151 if ((regs->tstate & TSTATE_PRIV) || !(test_thread_flag(TIF_32BIT))) {
152 __asm__ __volatile__ ("flushw");
153 rw = (struct reg_window __user *)
154 (regs->u_regs[14] + STACK_BIAS);
155 rwk = (struct reg_window *)
156 (regs->u_regs[14] + STACK_BIAS);
157 if (!(regs->tstate & TSTATE_PRIV)) {
158 old_fs = get_fs();
159 set_fs (USER_DS);
160 if (copy_from_user (&r_w, rw, sizeof(r_w))) {
161 set_fs (old_fs);
162 return;
163 }
164 rwk = &r_w;
165 set_fs (old_fs);
166 }
167 } else {
168 show_regwindow32(regs);
169 return;
170 }
171 printk("l0: %016lx l1: %016lx l2: %016lx l3: %016lx\n",
172 rwk->locals[0], rwk->locals[1], rwk->locals[2], rwk->locals[3]);
173 printk("l4: %016lx l5: %016lx l6: %016lx l7: %016lx\n",
174 rwk->locals[4], rwk->locals[5], rwk->locals[6], rwk->locals[7]);
175 printk("i0: %016lx i1: %016lx i2: %016lx i3: %016lx\n",
176 rwk->ins[0], rwk->ins[1], rwk->ins[2], rwk->ins[3]);
177 printk("i4: %016lx i5: %016lx i6: %016lx i7: %016lx\n",
178 rwk->ins[4], rwk->ins[5], rwk->ins[6], rwk->ins[7]);
179 if (regs->tstate & TSTATE_PRIV)
180 printk("I7: <%pS>\n", (void *) rwk->ins[7]);
181}
182
183void show_regs(struct pt_regs *regs)
184{
185 printk("TSTATE: %016lx TPC: %016lx TNPC: %016lx Y: %08x %s\n", regs->tstate,
186 regs->tpc, regs->tnpc, regs->y, print_tainted());
187 printk("TPC: <%pS>\n", (void *) regs->tpc);
188 printk("g0: %016lx g1: %016lx g2: %016lx g3: %016lx\n",
189 regs->u_regs[0], regs->u_regs[1], regs->u_regs[2],
190 regs->u_regs[3]);
191 printk("g4: %016lx g5: %016lx g6: %016lx g7: %016lx\n",
192 regs->u_regs[4], regs->u_regs[5], regs->u_regs[6],
193 regs->u_regs[7]);
194 printk("o0: %016lx o1: %016lx o2: %016lx o3: %016lx\n",
195 regs->u_regs[8], regs->u_regs[9], regs->u_regs[10],
196 regs->u_regs[11]);
197 printk("o4: %016lx o5: %016lx sp: %016lx ret_pc: %016lx\n",
198 regs->u_regs[12], regs->u_regs[13], regs->u_regs[14],
199 regs->u_regs[15]);
200 printk("RPC: <%pS>\n", (void *) regs->u_regs[15]);
201 show_regwindow(regs);
202}
203
204struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
205static DEFINE_SPINLOCK(global_reg_snapshot_lock);
206
207static void __global_reg_self(struct thread_info *tp, struct pt_regs *regs,
208 int this_cpu)
209{
210 flushw_all();
211
212 global_reg_snapshot[this_cpu].tstate = regs->tstate;
213 global_reg_snapshot[this_cpu].tpc = regs->tpc;
214 global_reg_snapshot[this_cpu].tnpc = regs->tnpc;
215 global_reg_snapshot[this_cpu].o7 = regs->u_regs[UREG_I7];
216
217 if (regs->tstate & TSTATE_PRIV) {
218 struct reg_window *rw;
219
220 rw = (struct reg_window *)
221 (regs->u_regs[UREG_FP] + STACK_BIAS);
222 if (kstack_valid(tp, (unsigned long) rw)) {
223 global_reg_snapshot[this_cpu].i7 = rw->ins[7];
224 rw = (struct reg_window *)
225 (rw->ins[6] + STACK_BIAS);
226 if (kstack_valid(tp, (unsigned long) rw))
227 global_reg_snapshot[this_cpu].rpc = rw->ins[7];
228 }
229 } else {
230 global_reg_snapshot[this_cpu].i7 = 0;
231 global_reg_snapshot[this_cpu].rpc = 0;
232 }
233 global_reg_snapshot[this_cpu].thread = tp;
234}
235
236/* In order to avoid hangs we do not try to synchronize with the
237 * global register dump client cpus. The last store they make is to
238 * the thread pointer, so do a short poll waiting for that to become
239 * non-NULL.
240 */
241static void __global_reg_poll(struct global_reg_snapshot *gp)
242{
243 int limit = 0;
244
245 while (!gp->thread && ++limit < 100) {
246 barrier();
247 udelay(1);
248 }
249}
250
251void __trigger_all_cpu_backtrace(void)
252{
253 struct thread_info *tp = current_thread_info();
254 struct pt_regs *regs = get_irq_regs();
255 unsigned long flags;
256 int this_cpu, cpu;
257
258 if (!regs)
259 regs = tp->kregs;
260
261 spin_lock_irqsave(&global_reg_snapshot_lock, flags);
262
263 memset(global_reg_snapshot, 0, sizeof(global_reg_snapshot));
264
265 this_cpu = raw_smp_processor_id();
266
267 __global_reg_self(tp, regs, this_cpu);
268
269 smp_fetch_global_regs();
270
271 for_each_online_cpu(cpu) {
272 struct global_reg_snapshot *gp = &global_reg_snapshot[cpu];
273
274 __global_reg_poll(gp);
275
276 tp = gp->thread;
277 printk("%c CPU[%3d]: TSTATE[%016lx] TPC[%016lx] TNPC[%016lx] TASK[%s:%d]\n",
278 (cpu == this_cpu ? '*' : ' '), cpu,
279 gp->tstate, gp->tpc, gp->tnpc,
280 ((tp && tp->task) ? tp->task->comm : "NULL"),
281 ((tp && tp->task) ? tp->task->pid : -1));
282
283 if (gp->tstate & TSTATE_PRIV) {
284 printk(" TPC[%pS] O7[%pS] I7[%pS] RPC[%pS]\n",
285 (void *) gp->tpc,
286 (void *) gp->o7,
287 (void *) gp->i7,
288 (void *) gp->rpc);
289 } else {
290 printk(" TPC[%lx] O7[%lx] I7[%lx] RPC[%lx]\n",
291 gp->tpc, gp->o7, gp->i7, gp->rpc);
292 }
293 }
294
295 memset(global_reg_snapshot, 0, sizeof(global_reg_snapshot));
296
297 spin_unlock_irqrestore(&global_reg_snapshot_lock, flags);
298}
299
300#ifdef CONFIG_MAGIC_SYSRQ
301
302static void sysrq_handle_globreg(int key, struct tty_struct *tty)
303{
304 __trigger_all_cpu_backtrace();
305}
306
307static struct sysrq_key_op sparc_globalreg_op = {
308 .handler = sysrq_handle_globreg,
309 .help_msg = "Globalregs",
310 .action_msg = "Show Global CPU Regs",
311};
312
313static int __init sparc_globreg_init(void)
314{
315 return register_sysrq_key('y', &sparc_globalreg_op);
316}
317
318core_initcall(sparc_globreg_init);
319
320#endif
321
322unsigned long thread_saved_pc(struct task_struct *tsk)
323{
324 struct thread_info *ti = task_thread_info(tsk);
325 unsigned long ret = 0xdeadbeefUL;
326
327 if (ti && ti->ksp) {
328 unsigned long *sp;
329 sp = (unsigned long *)(ti->ksp + STACK_BIAS);
330 if (((unsigned long)sp & (sizeof(long) - 1)) == 0UL &&
331 sp[14]) {
332 unsigned long *fp;
333 fp = (unsigned long *)(sp[14] + STACK_BIAS);
334 if (((unsigned long)fp & (sizeof(long) - 1)) == 0UL)
335 ret = fp[15];
336 }
337 }
338 return ret;
339}
340
341/* Free current thread data structures etc.. */
342void exit_thread(void)
343{
344 struct thread_info *t = current_thread_info();
345
346 if (t->utraps) {
347 if (t->utraps[0] < 2)
348 kfree (t->utraps);
349 else
350 t->utraps[0]--;
351 }
352
353 if (test_and_clear_thread_flag(TIF_PERFCTR)) {
354 t->user_cntd0 = t->user_cntd1 = NULL;
355 t->pcr_reg = 0;
356 write_pcr(0);
357 }
358}
359
360void flush_thread(void)
361{
362 struct thread_info *t = current_thread_info();
363 struct mm_struct *mm;
364
365 if (test_ti_thread_flag(t, TIF_ABI_PENDING)) {
366 clear_ti_thread_flag(t, TIF_ABI_PENDING);
367 if (test_ti_thread_flag(t, TIF_32BIT))
368 clear_ti_thread_flag(t, TIF_32BIT);
369 else
370 set_ti_thread_flag(t, TIF_32BIT);
371 }
372
373 mm = t->task->mm;
374 if (mm)
375 tsb_context_switch(mm);
376
377 set_thread_wsaved(0);
378
379 /* Turn off performance counters if on. */
380 if (test_and_clear_thread_flag(TIF_PERFCTR)) {
381 t->user_cntd0 = t->user_cntd1 = NULL;
382 t->pcr_reg = 0;
383 write_pcr(0);
384 }
385
386 /* Clear FPU register state. */
387 t->fpsaved[0] = 0;
388
389 if (get_thread_current_ds() != ASI_AIUS)
390 set_fs(USER_DS);
391}
392
393/* It's a bit more tricky when 64-bit tasks are involved... */
394static unsigned long clone_stackframe(unsigned long csp, unsigned long psp)
395{
396 unsigned long fp, distance, rval;
397
398 if (!(test_thread_flag(TIF_32BIT))) {
399 csp += STACK_BIAS;
400 psp += STACK_BIAS;
401 __get_user(fp, &(((struct reg_window __user *)psp)->ins[6]));
402 fp += STACK_BIAS;
403 } else
404 __get_user(fp, &(((struct reg_window32 __user *)psp)->ins[6]));
405
406 /* Now 8-byte align the stack as this is mandatory in the
407 * Sparc ABI due to how register windows work. This hides
408 * the restriction from thread libraries etc. -DaveM
409 */
410 csp &= ~7UL;
411
412 distance = fp - psp;
413 rval = (csp - distance);
414 if (copy_in_user((void __user *) rval, (void __user *) psp, distance))
415 rval = 0;
416 else if (test_thread_flag(TIF_32BIT)) {
417 if (put_user(((u32)csp),
418 &(((struct reg_window32 __user *)rval)->ins[6])))
419 rval = 0;
420 } else {
421 if (put_user(((u64)csp - STACK_BIAS),
422 &(((struct reg_window __user *)rval)->ins[6])))
423 rval = 0;
424 else
425 rval = rval - STACK_BIAS;
426 }
427
428 return rval;
429}
430
431/* Standard stuff. */
432static inline void shift_window_buffer(int first_win, int last_win,
433 struct thread_info *t)
434{
435 int i;
436
437 for (i = first_win; i < last_win; i++) {
438 t->rwbuf_stkptrs[i] = t->rwbuf_stkptrs[i+1];
439 memcpy(&t->reg_window[i], &t->reg_window[i+1],
440 sizeof(struct reg_window));
441 }
442}
443
444void synchronize_user_stack(void)
445{
446 struct thread_info *t = current_thread_info();
447 unsigned long window;
448
449 flush_user_windows();
450 if ((window = get_thread_wsaved()) != 0) {
451 int winsize = sizeof(struct reg_window);
452 int bias = 0;
453
454 if (test_thread_flag(TIF_32BIT))
455 winsize = sizeof(struct reg_window32);
456 else
457 bias = STACK_BIAS;
458
459 window -= 1;
460 do {
461 unsigned long sp = (t->rwbuf_stkptrs[window] + bias);
462 struct reg_window *rwin = &t->reg_window[window];
463
464 if (!copy_to_user((char __user *)sp, rwin, winsize)) {
465 shift_window_buffer(window, get_thread_wsaved() - 1, t);
466 set_thread_wsaved(get_thread_wsaved() - 1);
467 }
468 } while (window--);
469 }
470}
471
472static void stack_unaligned(unsigned long sp)
473{
474 siginfo_t info;
475
476 info.si_signo = SIGBUS;
477 info.si_errno = 0;
478 info.si_code = BUS_ADRALN;
479 info.si_addr = (void __user *) sp;
480 info.si_trapno = 0;
481 force_sig_info(SIGBUS, &info, current);
482}
483
484void fault_in_user_windows(void)
485{
486 struct thread_info *t = current_thread_info();
487 unsigned long window;
488 int winsize = sizeof(struct reg_window);
489 int bias = 0;
490
491 if (test_thread_flag(TIF_32BIT))
492 winsize = sizeof(struct reg_window32);
493 else
494 bias = STACK_BIAS;
495
496 flush_user_windows();
497 window = get_thread_wsaved();
498
499 if (likely(window != 0)) {
500 window -= 1;
501 do {
502 unsigned long sp = (t->rwbuf_stkptrs[window] + bias);
503 struct reg_window *rwin = &t->reg_window[window];
504
505 if (unlikely(sp & 0x7UL))
506 stack_unaligned(sp);
507
508 if (unlikely(copy_to_user((char __user *)sp,
509 rwin, winsize)))
510 goto barf;
511 } while (window--);
512 }
513 set_thread_wsaved(0);
514 return;
515
516barf:
517 set_thread_wsaved(window + 1);
518 do_exit(SIGILL);
519}
520
521asmlinkage long sparc_do_fork(unsigned long clone_flags,
522 unsigned long stack_start,
523 struct pt_regs *regs,
524 unsigned long stack_size)
525{
526 int __user *parent_tid_ptr, *child_tid_ptr;
527 unsigned long orig_i1 = regs->u_regs[UREG_I1];
528 long ret;
529
530#ifdef CONFIG_COMPAT
531 if (test_thread_flag(TIF_32BIT)) {
532 parent_tid_ptr = compat_ptr(regs->u_regs[UREG_I2]);
533 child_tid_ptr = compat_ptr(regs->u_regs[UREG_I4]);
534 } else
535#endif
536 {
537 parent_tid_ptr = (int __user *) regs->u_regs[UREG_I2];
538 child_tid_ptr = (int __user *) regs->u_regs[UREG_I4];
539 }
540
541 ret = do_fork(clone_flags, stack_start,
542 regs, stack_size,
543 parent_tid_ptr, child_tid_ptr);
544
545 /* If we get an error and potentially restart the system
546 * call, we're screwed because copy_thread() clobbered
547 * the parent's %o1. So detect that case and restore it
548 * here.
549 */
550 if ((unsigned long)ret >= -ERESTART_RESTARTBLOCK)
551 regs->u_regs[UREG_I1] = orig_i1;
552
553 return ret;
554}
555
556/* Copy a Sparc thread. The fork() return value conventions
557 * under SunOS are nothing short of bletcherous:
558 * Parent --> %o0 == childs pid, %o1 == 0
559 * Child --> %o0 == parents pid, %o1 == 1
560 */
561int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
562 unsigned long unused,
563 struct task_struct *p, struct pt_regs *regs)
564{
565 struct thread_info *t = task_thread_info(p);
566 struct sparc_stackf *parent_sf;
567 unsigned long child_stack_sz;
568 char *child_trap_frame;
569 int kernel_thread;
570
571 kernel_thread = (regs->tstate & TSTATE_PRIV) ? 1 : 0;
572 parent_sf = ((struct sparc_stackf *) regs) - 1;
573
574 /* Calculate offset to stack_frame & pt_regs */
575 child_stack_sz = ((STACKFRAME_SZ + TRACEREG_SZ) +
576 (kernel_thread ? STACKFRAME_SZ : 0));
577 child_trap_frame = (task_stack_page(p) +
578 (THREAD_SIZE - child_stack_sz));
579 memcpy(child_trap_frame, parent_sf, child_stack_sz);
580
581 t->flags = (t->flags & ~((0xffUL << TI_FLAG_CWP_SHIFT) |
582 (0xffUL << TI_FLAG_CURRENT_DS_SHIFT))) |
583 (((regs->tstate + 1) & TSTATE_CWP) << TI_FLAG_CWP_SHIFT);
584 t->new_child = 1;
585 t->ksp = ((unsigned long) child_trap_frame) - STACK_BIAS;
586 t->kregs = (struct pt_regs *) (child_trap_frame +
587 sizeof(struct sparc_stackf));
588 t->fpsaved[0] = 0;
589
590 if (kernel_thread) {
591 struct sparc_stackf *child_sf = (struct sparc_stackf *)
592 (child_trap_frame + (STACKFRAME_SZ + TRACEREG_SZ));
593
594 /* Zero terminate the stack backtrace. */
595 child_sf->fp = NULL;
596 t->kregs->u_regs[UREG_FP] =
597 ((unsigned long) child_sf) - STACK_BIAS;
598
599 /* Special case, if we are spawning a kernel thread from
600 * a userspace task (usermode helper, NFS or similar), we
601 * must disable performance counters in the child because
602 * the address space and protection realm are changing.
603 */
604 if (t->flags & _TIF_PERFCTR) {
605 t->user_cntd0 = t->user_cntd1 = NULL;
606 t->pcr_reg = 0;
607 t->flags &= ~_TIF_PERFCTR;
608 }
609 t->flags |= ((long)ASI_P << TI_FLAG_CURRENT_DS_SHIFT);
610 t->kregs->u_regs[UREG_G6] = (unsigned long) t;
611 t->kregs->u_regs[UREG_G4] = (unsigned long) t->task;
612 } else {
613 if (t->flags & _TIF_32BIT) {
614 sp &= 0x00000000ffffffffUL;
615 regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
616 }
617 t->kregs->u_regs[UREG_FP] = sp;
618 t->flags |= ((long)ASI_AIUS << TI_FLAG_CURRENT_DS_SHIFT);
619 if (sp != regs->u_regs[UREG_FP]) {
620 unsigned long csp;
621
622 csp = clone_stackframe(sp, regs->u_regs[UREG_FP]);
623 if (!csp)
624 return -EFAULT;
625 t->kregs->u_regs[UREG_FP] = csp;
626 }
627 if (t->utraps)
628 t->utraps[0]++;
629 }
630
631 /* Set the return value for the child. */
632 t->kregs->u_regs[UREG_I0] = current->pid;
633 t->kregs->u_regs[UREG_I1] = 1;
634
635 /* Set the second return value for the parent. */
636 regs->u_regs[UREG_I1] = 0;
637
638 if (clone_flags & CLONE_SETTLS)
639 t->kregs->u_regs[UREG_G7] = regs->u_regs[UREG_I3];
640
641 return 0;
642}
643
644/*
645 * This is the mechanism for creating a new kernel thread.
646 *
647 * NOTE! Only a kernel-only process(ie the swapper or direct descendants
648 * who haven't done an "execve()") should use this: it will work within
649 * a system call from a "real" process, but the process memory space will
650 * not be freed until both the parent and the child have exited.
651 */
652pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
653{
654 long retval;
655
656 /* If the parent runs before fn(arg) is called by the child,
657 * the input registers of this function can be clobbered.
658 * So we stash 'fn' and 'arg' into global registers which
659 * will not be modified by the parent.
660 */
661 __asm__ __volatile__("mov %4, %%g2\n\t" /* Save FN into global */
662 "mov %5, %%g3\n\t" /* Save ARG into global */
663 "mov %1, %%g1\n\t" /* Clone syscall nr. */
664 "mov %2, %%o0\n\t" /* Clone flags. */
665 "mov 0, %%o1\n\t" /* usp arg == 0 */
666 "t 0x6d\n\t" /* Linux/Sparc clone(). */
667 "brz,a,pn %%o1, 1f\n\t" /* Parent, just return. */
668 " mov %%o0, %0\n\t"
669 "jmpl %%g2, %%o7\n\t" /* Call the function. */
670 " mov %%g3, %%o0\n\t" /* Set arg in delay. */
671 "mov %3, %%g1\n\t"
672 "t 0x6d\n\t" /* Linux/Sparc exit(). */
673 /* Notreached by child. */
674 "1:" :
675 "=r" (retval) :
676 "i" (__NR_clone), "r" (flags | CLONE_VM | CLONE_UNTRACED),
677 "i" (__NR_exit), "r" (fn), "r" (arg) :
678 "g1", "g2", "g3", "o0", "o1", "memory", "cc");
679 return retval;
680}
681
682typedef struct {
683 union {
684 unsigned int pr_regs[32];
685 unsigned long pr_dregs[16];
686 } pr_fr;
687 unsigned int __unused;
688 unsigned int pr_fsr;
689 unsigned char pr_qcnt;
690 unsigned char pr_q_entrysize;
691 unsigned char pr_en;
692 unsigned int pr_q[64];
693} elf_fpregset_t32;
694
695/*
696 * fill in the fpu structure for a core dump.
697 */
698int dump_fpu (struct pt_regs * regs, elf_fpregset_t * fpregs)
699{
700 unsigned long *kfpregs = current_thread_info()->fpregs;
701 unsigned long fprs = current_thread_info()->fpsaved[0];
702
703 if (test_thread_flag(TIF_32BIT)) {
704 elf_fpregset_t32 *fpregs32 = (elf_fpregset_t32 *)fpregs;
705
706 if (fprs & FPRS_DL)
707 memcpy(&fpregs32->pr_fr.pr_regs[0], kfpregs,
708 sizeof(unsigned int) * 32);
709 else
710 memset(&fpregs32->pr_fr.pr_regs[0], 0,
711 sizeof(unsigned int) * 32);
712 fpregs32->pr_qcnt = 0;
713 fpregs32->pr_q_entrysize = 8;
714 memset(&fpregs32->pr_q[0], 0,
715 (sizeof(unsigned int) * 64));
716 if (fprs & FPRS_FEF) {
717 fpregs32->pr_fsr = (unsigned int) current_thread_info()->xfsr[0];
718 fpregs32->pr_en = 1;
719 } else {
720 fpregs32->pr_fsr = 0;
721 fpregs32->pr_en = 0;
722 }
723 } else {
724 if(fprs & FPRS_DL)
725 memcpy(&fpregs->pr_regs[0], kfpregs,
726 sizeof(unsigned int) * 32);
727 else
728 memset(&fpregs->pr_regs[0], 0,
729 sizeof(unsigned int) * 32);
730 if(fprs & FPRS_DU)
731 memcpy(&fpregs->pr_regs[16], kfpregs+16,
732 sizeof(unsigned int) * 32);
733 else
734 memset(&fpregs->pr_regs[16], 0,
735 sizeof(unsigned int) * 32);
736 if(fprs & FPRS_FEF) {
737 fpregs->pr_fsr = current_thread_info()->xfsr[0];
738 fpregs->pr_gsr = current_thread_info()->gsr[0];
739 } else {
740 fpregs->pr_fsr = fpregs->pr_gsr = 0;
741 }
742 fpregs->pr_fprs = fprs;
743 }
744 return 1;
745}
746
747/*
748 * sparc_execve() executes a new program after the asm stub has set
749 * things up for us. This should basically do what I want it to.
750 */
751asmlinkage int sparc_execve(struct pt_regs *regs)
752{
753 int error, base = 0;
754 char *filename;
755
756 /* User register window flush is done by entry.S */
757
758 /* Check for indirect call. */
759 if (regs->u_regs[UREG_G1] == 0)
760 base = 1;
761
762 filename = getname((char __user *)regs->u_regs[base + UREG_I0]);
763 error = PTR_ERR(filename);
764 if (IS_ERR(filename))
765 goto out;
766 error = do_execve(filename,
767 (char __user * __user *)
768 regs->u_regs[base + UREG_I1],
769 (char __user * __user *)
770 regs->u_regs[base + UREG_I2], regs);
771 putname(filename);
772 if (!error) {
773 fprs_write(0);
774 current_thread_info()->xfsr[0] = 0;
775 current_thread_info()->fpsaved[0] = 0;
776 regs->tstate &= ~TSTATE_PEF;
777 }
778out:
779 return error;
780}
781
782unsigned long get_wchan(struct task_struct *task)
783{
784 unsigned long pc, fp, bias = 0;
785 struct thread_info *tp;
786 struct reg_window *rw;
787 unsigned long ret = 0;
788 int count = 0;
789
790 if (!task || task == current ||
791 task->state == TASK_RUNNING)
792 goto out;
793
794 tp = task_thread_info(task);
795 bias = STACK_BIAS;
796 fp = task_thread_info(task)->ksp + bias;
797
798 do {
799 if (!kstack_valid(tp, fp))
800 break;
801 rw = (struct reg_window *) fp;
802 pc = rw->ins[7];
803 if (!in_sched_functions(pc)) {
804 ret = pc;
805 goto out;
806 }
807 fp = rw->ins[6] + bias;
808 } while (++count < 16);
809
810out:
811 return ret;
812}
diff --git a/arch/sparc/kernel/prom_64.c b/arch/sparc/kernel/prom_64.c
new file mode 100644
index 000000000000..dbba82f9b142
--- /dev/null
+++ b/arch/sparc/kernel/prom_64.c
@@ -0,0 +1,1684 @@
1/*
2 * Procedures for creating, accessing and interpreting the device tree.
3 *
4 * Paul Mackerras August 1996.
5 * Copyright (C) 1996-2005 Paul Mackerras.
6 *
7 * Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
8 * {engebret|bergner}@us.ibm.com
9 *
10 * Adapted for sparc64 by David S. Miller davem@davemloft.net
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version
15 * 2 of the License, or (at your option) any later version.
16 */
17
18#include <linux/kernel.h>
19#include <linux/types.h>
20#include <linux/string.h>
21#include <linux/mm.h>
22#include <linux/module.h>
23#include <linux/lmb.h>
24#include <linux/of_device.h>
25
26#include <asm/prom.h>
27#include <asm/oplib.h>
28#include <asm/irq.h>
29#include <asm/asi.h>
30#include <asm/upa.h>
31#include <asm/smp.h>
32
33extern struct device_node *allnodes; /* temporary while merging */
34
35extern rwlock_t devtree_lock; /* temporary while merging */
36
37struct device_node *of_find_node_by_phandle(phandle handle)
38{
39 struct device_node *np;
40
41 for (np = allnodes; np; np = np->allnext)
42 if (np->node == handle)
43 break;
44
45 return np;
46}
47EXPORT_SYMBOL(of_find_node_by_phandle);
48
49int of_getintprop_default(struct device_node *np, const char *name, int def)
50{
51 struct property *prop;
52 int len;
53
54 prop = of_find_property(np, name, &len);
55 if (!prop || len != 4)
56 return def;
57
58 return *(int *) prop->value;
59}
60EXPORT_SYMBOL(of_getintprop_default);
61
62DEFINE_MUTEX(of_set_property_mutex);
63EXPORT_SYMBOL(of_set_property_mutex);
64
65int of_set_property(struct device_node *dp, const char *name, void *val, int len)
66{
67 struct property **prevp;
68 void *new_val;
69 int err;
70
71 new_val = kmalloc(len, GFP_KERNEL);
72 if (!new_val)
73 return -ENOMEM;
74
75 memcpy(new_val, val, len);
76
77 err = -ENODEV;
78
79 write_lock(&devtree_lock);
80 prevp = &dp->properties;
81 while (*prevp) {
82 struct property *prop = *prevp;
83
84 if (!strcasecmp(prop->name, name)) {
85 void *old_val = prop->value;
86 int ret;
87
88 mutex_lock(&of_set_property_mutex);
89 ret = prom_setprop(dp->node, name, val, len);
90 mutex_unlock(&of_set_property_mutex);
91
92 err = -EINVAL;
93 if (ret >= 0) {
94 prop->value = new_val;
95 prop->length = len;
96
97 if (OF_IS_DYNAMIC(prop))
98 kfree(old_val);
99
100 OF_MARK_DYNAMIC(prop);
101
102 err = 0;
103 }
104 break;
105 }
106 prevp = &(*prevp)->next;
107 }
108 write_unlock(&devtree_lock);
109
110 /* XXX Upate procfs if necessary... */
111
112 return err;
113}
114EXPORT_SYMBOL(of_set_property);
115
116int of_find_in_proplist(const char *list, const char *match, int len)
117{
118 while (len > 0) {
119 int l;
120
121 if (!strcmp(list, match))
122 return 1;
123 l = strlen(list) + 1;
124 list += l;
125 len -= l;
126 }
127 return 0;
128}
129EXPORT_SYMBOL(of_find_in_proplist);
130
131static unsigned int prom_early_allocated __initdata;
132
133static void * __init prom_early_alloc(unsigned long size)
134{
135 unsigned long paddr = lmb_alloc(size, SMP_CACHE_BYTES);
136 void *ret;
137
138 if (!paddr) {
139 prom_printf("prom_early_alloc(%lu) failed\n");
140 prom_halt();
141 }
142
143 ret = __va(paddr);
144 memset(ret, 0, size);
145 prom_early_allocated += size;
146
147 return ret;
148}
149
150#ifdef CONFIG_PCI
151/* PSYCHO interrupt mapping support. */
152#define PSYCHO_IMAP_A_SLOT0 0x0c00UL
153#define PSYCHO_IMAP_B_SLOT0 0x0c20UL
154static unsigned long psycho_pcislot_imap_offset(unsigned long ino)
155{
156 unsigned int bus = (ino & 0x10) >> 4;
157 unsigned int slot = (ino & 0x0c) >> 2;
158
159 if (bus == 0)
160 return PSYCHO_IMAP_A_SLOT0 + (slot * 8);
161 else
162 return PSYCHO_IMAP_B_SLOT0 + (slot * 8);
163}
164
165#define PSYCHO_OBIO_IMAP_BASE 0x1000UL
166
167#define PSYCHO_ONBOARD_IRQ_BASE 0x20
168#define psycho_onboard_imap_offset(__ino) \
169 (PSYCHO_OBIO_IMAP_BASE + (((__ino) & 0x1f) << 3))
170
171#define PSYCHO_ICLR_A_SLOT0 0x1400UL
172#define PSYCHO_ICLR_SCSI 0x1800UL
173
174#define psycho_iclr_offset(ino) \
175 ((ino & 0x20) ? (PSYCHO_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \
176 (PSYCHO_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
177
178static unsigned int psycho_irq_build(struct device_node *dp,
179 unsigned int ino,
180 void *_data)
181{
182 unsigned long controller_regs = (unsigned long) _data;
183 unsigned long imap, iclr;
184 unsigned long imap_off, iclr_off;
185 int inofixup = 0;
186
187 ino &= 0x3f;
188 if (ino < PSYCHO_ONBOARD_IRQ_BASE) {
189 /* PCI slot */
190 imap_off = psycho_pcislot_imap_offset(ino);
191 } else {
192 /* Onboard device */
193 imap_off = psycho_onboard_imap_offset(ino);
194 }
195
196 /* Now build the IRQ bucket. */
197 imap = controller_regs + imap_off;
198
199 iclr_off = psycho_iclr_offset(ino);
200 iclr = controller_regs + iclr_off;
201
202 if ((ino & 0x20) == 0)
203 inofixup = ino & 0x03;
204
205 return build_irq(inofixup, iclr, imap);
206}
207
208static void __init psycho_irq_trans_init(struct device_node *dp)
209{
210 const struct linux_prom64_registers *regs;
211
212 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
213 dp->irq_trans->irq_build = psycho_irq_build;
214
215 regs = of_get_property(dp, "reg", NULL);
216 dp->irq_trans->data = (void *) regs[2].phys_addr;
217}
218
219#define sabre_read(__reg) \
220({ u64 __ret; \
221 __asm__ __volatile__("ldxa [%1] %2, %0" \
222 : "=r" (__ret) \
223 : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
224 : "memory"); \
225 __ret; \
226})
227
228struct sabre_irq_data {
229 unsigned long controller_regs;
230 unsigned int pci_first_busno;
231};
232#define SABRE_CONFIGSPACE 0x001000000UL
233#define SABRE_WRSYNC 0x1c20UL
234
235#define SABRE_CONFIG_BASE(CONFIG_SPACE) \
236 (CONFIG_SPACE | (1UL << 24))
237#define SABRE_CONFIG_ENCODE(BUS, DEVFN, REG) \
238 (((unsigned long)(BUS) << 16) | \
239 ((unsigned long)(DEVFN) << 8) | \
240 ((unsigned long)(REG)))
241
242/* When a device lives behind a bridge deeper in the PCI bus topology
243 * than APB, a special sequence must run to make sure all pending DMA
244 * transfers at the time of IRQ delivery are visible in the coherency
245 * domain by the cpu. This sequence is to perform a read on the far
246 * side of the non-APB bridge, then perform a read of Sabre's DMA
247 * write-sync register.
248 */
249static void sabre_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
250{
251 unsigned int phys_hi = (unsigned int) (unsigned long) _arg1;
252 struct sabre_irq_data *irq_data = _arg2;
253 unsigned long controller_regs = irq_data->controller_regs;
254 unsigned long sync_reg = controller_regs + SABRE_WRSYNC;
255 unsigned long config_space = controller_regs + SABRE_CONFIGSPACE;
256 unsigned int bus, devfn;
257 u16 _unused;
258
259 config_space = SABRE_CONFIG_BASE(config_space);
260
261 bus = (phys_hi >> 16) & 0xff;
262 devfn = (phys_hi >> 8) & 0xff;
263
264 config_space |= SABRE_CONFIG_ENCODE(bus, devfn, 0x00);
265
266 __asm__ __volatile__("membar #Sync\n\t"
267 "lduha [%1] %2, %0\n\t"
268 "membar #Sync"
269 : "=r" (_unused)
270 : "r" ((u16 *) config_space),
271 "i" (ASI_PHYS_BYPASS_EC_E_L)
272 : "memory");
273
274 sabre_read(sync_reg);
275}
276
277#define SABRE_IMAP_A_SLOT0 0x0c00UL
278#define SABRE_IMAP_B_SLOT0 0x0c20UL
279#define SABRE_ICLR_A_SLOT0 0x1400UL
280#define SABRE_ICLR_B_SLOT0 0x1480UL
281#define SABRE_ICLR_SCSI 0x1800UL
282#define SABRE_ICLR_ETH 0x1808UL
283#define SABRE_ICLR_BPP 0x1810UL
284#define SABRE_ICLR_AU_REC 0x1818UL
285#define SABRE_ICLR_AU_PLAY 0x1820UL
286#define SABRE_ICLR_PFAIL 0x1828UL
287#define SABRE_ICLR_KMS 0x1830UL
288#define SABRE_ICLR_FLPY 0x1838UL
289#define SABRE_ICLR_SHW 0x1840UL
290#define SABRE_ICLR_KBD 0x1848UL
291#define SABRE_ICLR_MS 0x1850UL
292#define SABRE_ICLR_SER 0x1858UL
293#define SABRE_ICLR_UE 0x1870UL
294#define SABRE_ICLR_CE 0x1878UL
295#define SABRE_ICLR_PCIERR 0x1880UL
296
297static unsigned long sabre_pcislot_imap_offset(unsigned long ino)
298{
299 unsigned int bus = (ino & 0x10) >> 4;
300 unsigned int slot = (ino & 0x0c) >> 2;
301
302 if (bus == 0)
303 return SABRE_IMAP_A_SLOT0 + (slot * 8);
304 else
305 return SABRE_IMAP_B_SLOT0 + (slot * 8);
306}
307
308#define SABRE_OBIO_IMAP_BASE 0x1000UL
309#define SABRE_ONBOARD_IRQ_BASE 0x20
310#define sabre_onboard_imap_offset(__ino) \
311 (SABRE_OBIO_IMAP_BASE + (((__ino) & 0x1f) << 3))
312
313#define sabre_iclr_offset(ino) \
314 ((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \
315 (SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
316
317static int sabre_device_needs_wsync(struct device_node *dp)
318{
319 struct device_node *parent = dp->parent;
320 const char *parent_model, *parent_compat;
321
322 /* This traversal up towards the root is meant to
323 * handle two cases:
324 *
325 * 1) non-PCI bus sitting under PCI, such as 'ebus'
326 * 2) the PCI controller interrupts themselves, which
327 * will use the sabre_irq_build but do not need
328 * the DMA synchronization handling
329 */
330 while (parent) {
331 if (!strcmp(parent->type, "pci"))
332 break;
333 parent = parent->parent;
334 }
335
336 if (!parent)
337 return 0;
338
339 parent_model = of_get_property(parent,
340 "model", NULL);
341 if (parent_model &&
342 (!strcmp(parent_model, "SUNW,sabre") ||
343 !strcmp(parent_model, "SUNW,simba")))
344 return 0;
345
346 parent_compat = of_get_property(parent,
347 "compatible", NULL);
348 if (parent_compat &&
349 (!strcmp(parent_compat, "pci108e,a000") ||
350 !strcmp(parent_compat, "pci108e,a001")))
351 return 0;
352
353 return 1;
354}
355
356static unsigned int sabre_irq_build(struct device_node *dp,
357 unsigned int ino,
358 void *_data)
359{
360 struct sabre_irq_data *irq_data = _data;
361 unsigned long controller_regs = irq_data->controller_regs;
362 const struct linux_prom_pci_registers *regs;
363 unsigned long imap, iclr;
364 unsigned long imap_off, iclr_off;
365 int inofixup = 0;
366 int virt_irq;
367
368 ino &= 0x3f;
369 if (ino < SABRE_ONBOARD_IRQ_BASE) {
370 /* PCI slot */
371 imap_off = sabre_pcislot_imap_offset(ino);
372 } else {
373 /* onboard device */
374 imap_off = sabre_onboard_imap_offset(ino);
375 }
376
377 /* Now build the IRQ bucket. */
378 imap = controller_regs + imap_off;
379
380 iclr_off = sabre_iclr_offset(ino);
381 iclr = controller_regs + iclr_off;
382
383 if ((ino & 0x20) == 0)
384 inofixup = ino & 0x03;
385
386 virt_irq = build_irq(inofixup, iclr, imap);
387
388 /* If the parent device is a PCI<->PCI bridge other than
389 * APB, we have to install a pre-handler to ensure that
390 * all pending DMA is drained before the interrupt handler
391 * is run.
392 */
393 regs = of_get_property(dp, "reg", NULL);
394 if (regs && sabre_device_needs_wsync(dp)) {
395 irq_install_pre_handler(virt_irq,
396 sabre_wsync_handler,
397 (void *) (long) regs->phys_hi,
398 (void *) irq_data);
399 }
400
401 return virt_irq;
402}
403
404static void __init sabre_irq_trans_init(struct device_node *dp)
405{
406 const struct linux_prom64_registers *regs;
407 struct sabre_irq_data *irq_data;
408 const u32 *busrange;
409
410 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
411 dp->irq_trans->irq_build = sabre_irq_build;
412
413 irq_data = prom_early_alloc(sizeof(struct sabre_irq_data));
414
415 regs = of_get_property(dp, "reg", NULL);
416 irq_data->controller_regs = regs[0].phys_addr;
417
418 busrange = of_get_property(dp, "bus-range", NULL);
419 irq_data->pci_first_busno = busrange[0];
420
421 dp->irq_trans->data = irq_data;
422}
423
424/* SCHIZO interrupt mapping support. Unlike Psycho, for this controller the
425 * imap/iclr registers are per-PBM.
426 */
427#define SCHIZO_IMAP_BASE 0x1000UL
428#define SCHIZO_ICLR_BASE 0x1400UL
429
430static unsigned long schizo_imap_offset(unsigned long ino)
431{
432 return SCHIZO_IMAP_BASE + (ino * 8UL);
433}
434
435static unsigned long schizo_iclr_offset(unsigned long ino)
436{
437 return SCHIZO_ICLR_BASE + (ino * 8UL);
438}
439
440static unsigned long schizo_ino_to_iclr(unsigned long pbm_regs,
441 unsigned int ino)
442{
443
444 return pbm_regs + schizo_iclr_offset(ino);
445}
446
447static unsigned long schizo_ino_to_imap(unsigned long pbm_regs,
448 unsigned int ino)
449{
450 return pbm_regs + schizo_imap_offset(ino);
451}
452
453#define schizo_read(__reg) \
454({ u64 __ret; \
455 __asm__ __volatile__("ldxa [%1] %2, %0" \
456 : "=r" (__ret) \
457 : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
458 : "memory"); \
459 __ret; \
460})
461#define schizo_write(__reg, __val) \
462 __asm__ __volatile__("stxa %0, [%1] %2" \
463 : /* no outputs */ \
464 : "r" (__val), "r" (__reg), \
465 "i" (ASI_PHYS_BYPASS_EC_E) \
466 : "memory")
467
468static void tomatillo_wsync_handler(unsigned int ino, void *_arg1, void *_arg2)
469{
470 unsigned long sync_reg = (unsigned long) _arg2;
471 u64 mask = 1UL << (ino & IMAP_INO);
472 u64 val;
473 int limit;
474
475 schizo_write(sync_reg, mask);
476
477 limit = 100000;
478 val = 0;
479 while (--limit) {
480 val = schizo_read(sync_reg);
481 if (!(val & mask))
482 break;
483 }
484 if (limit <= 0) {
485 printk("tomatillo_wsync_handler: DMA won't sync [%lx:%lx]\n",
486 val, mask);
487 }
488
489 if (_arg1) {
490 static unsigned char cacheline[64]
491 __attribute__ ((aligned (64)));
492
493 __asm__ __volatile__("rd %%fprs, %0\n\t"
494 "or %0, %4, %1\n\t"
495 "wr %1, 0x0, %%fprs\n\t"
496 "stda %%f0, [%5] %6\n\t"
497 "wr %0, 0x0, %%fprs\n\t"
498 "membar #Sync"
499 : "=&r" (mask), "=&r" (val)
500 : "0" (mask), "1" (val),
501 "i" (FPRS_FEF), "r" (&cacheline[0]),
502 "i" (ASI_BLK_COMMIT_P));
503 }
504}
505
506struct schizo_irq_data {
507 unsigned long pbm_regs;
508 unsigned long sync_reg;
509 u32 portid;
510 int chip_version;
511};
512
513static unsigned int schizo_irq_build(struct device_node *dp,
514 unsigned int ino,
515 void *_data)
516{
517 struct schizo_irq_data *irq_data = _data;
518 unsigned long pbm_regs = irq_data->pbm_regs;
519 unsigned long imap, iclr;
520 int ign_fixup;
521 int virt_irq;
522 int is_tomatillo;
523
524 ino &= 0x3f;
525
526 /* Now build the IRQ bucket. */
527 imap = schizo_ino_to_imap(pbm_regs, ino);
528 iclr = schizo_ino_to_iclr(pbm_regs, ino);
529
530 /* On Schizo, no inofixup occurs. This is because each
531 * INO has it's own IMAP register. On Psycho and Sabre
532 * there is only one IMAP register for each PCI slot even
533 * though four different INOs can be generated by each
534 * PCI slot.
535 *
536 * But, for JBUS variants (essentially, Tomatillo), we have
537 * to fixup the lowest bit of the interrupt group number.
538 */
539 ign_fixup = 0;
540
541 is_tomatillo = (irq_data->sync_reg != 0UL);
542
543 if (is_tomatillo) {
544 if (irq_data->portid & 1)
545 ign_fixup = (1 << 6);
546 }
547
548 virt_irq = build_irq(ign_fixup, iclr, imap);
549
550 if (is_tomatillo) {
551 irq_install_pre_handler(virt_irq,
552 tomatillo_wsync_handler,
553 ((irq_data->chip_version <= 4) ?
554 (void *) 1 : (void *) 0),
555 (void *) irq_data->sync_reg);
556 }
557
558 return virt_irq;
559}
560
561static void __init __schizo_irq_trans_init(struct device_node *dp,
562 int is_tomatillo)
563{
564 const struct linux_prom64_registers *regs;
565 struct schizo_irq_data *irq_data;
566
567 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
568 dp->irq_trans->irq_build = schizo_irq_build;
569
570 irq_data = prom_early_alloc(sizeof(struct schizo_irq_data));
571
572 regs = of_get_property(dp, "reg", NULL);
573 dp->irq_trans->data = irq_data;
574
575 irq_data->pbm_regs = regs[0].phys_addr;
576 if (is_tomatillo)
577 irq_data->sync_reg = regs[3].phys_addr + 0x1a18UL;
578 else
579 irq_data->sync_reg = 0UL;
580 irq_data->portid = of_getintprop_default(dp, "portid", 0);
581 irq_data->chip_version = of_getintprop_default(dp, "version#", 0);
582}
583
584static void __init schizo_irq_trans_init(struct device_node *dp)
585{
586 __schizo_irq_trans_init(dp, 0);
587}
588
589static void __init tomatillo_irq_trans_init(struct device_node *dp)
590{
591 __schizo_irq_trans_init(dp, 1);
592}
593
594static unsigned int pci_sun4v_irq_build(struct device_node *dp,
595 unsigned int devino,
596 void *_data)
597{
598 u32 devhandle = (u32) (unsigned long) _data;
599
600 return sun4v_build_irq(devhandle, devino);
601}
602
603static void __init pci_sun4v_irq_trans_init(struct device_node *dp)
604{
605 const struct linux_prom64_registers *regs;
606
607 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
608 dp->irq_trans->irq_build = pci_sun4v_irq_build;
609
610 regs = of_get_property(dp, "reg", NULL);
611 dp->irq_trans->data = (void *) (unsigned long)
612 ((regs->phys_addr >> 32UL) & 0x0fffffff);
613}
614
615struct fire_irq_data {
616 unsigned long pbm_regs;
617 u32 portid;
618};
619
620#define FIRE_IMAP_BASE 0x001000
621#define FIRE_ICLR_BASE 0x001400
622
623static unsigned long fire_imap_offset(unsigned long ino)
624{
625 return FIRE_IMAP_BASE + (ino * 8UL);
626}
627
628static unsigned long fire_iclr_offset(unsigned long ino)
629{
630 return FIRE_ICLR_BASE + (ino * 8UL);
631}
632
633static unsigned long fire_ino_to_iclr(unsigned long pbm_regs,
634 unsigned int ino)
635{
636 return pbm_regs + fire_iclr_offset(ino);
637}
638
639static unsigned long fire_ino_to_imap(unsigned long pbm_regs,
640 unsigned int ino)
641{
642 return pbm_regs + fire_imap_offset(ino);
643}
644
645static unsigned int fire_irq_build(struct device_node *dp,
646 unsigned int ino,
647 void *_data)
648{
649 struct fire_irq_data *irq_data = _data;
650 unsigned long pbm_regs = irq_data->pbm_regs;
651 unsigned long imap, iclr;
652 unsigned long int_ctrlr;
653
654 ino &= 0x3f;
655
656 /* Now build the IRQ bucket. */
657 imap = fire_ino_to_imap(pbm_regs, ino);
658 iclr = fire_ino_to_iclr(pbm_regs, ino);
659
660 /* Set the interrupt controller number. */
661 int_ctrlr = 1 << 6;
662 upa_writeq(int_ctrlr, imap);
663
664 /* The interrupt map registers do not have an INO field
665 * like other chips do. They return zero in the INO
666 * field, and the interrupt controller number is controlled
667 * in bits 6 to 9. So in order for build_irq() to get
668 * the INO right we pass it in as part of the fixup
669 * which will get added to the map register zero value
670 * read by build_irq().
671 */
672 ino |= (irq_data->portid << 6);
673 ino -= int_ctrlr;
674 return build_irq(ino, iclr, imap);
675}
676
677static void __init fire_irq_trans_init(struct device_node *dp)
678{
679 const struct linux_prom64_registers *regs;
680 struct fire_irq_data *irq_data;
681
682 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
683 dp->irq_trans->irq_build = fire_irq_build;
684
685 irq_data = prom_early_alloc(sizeof(struct fire_irq_data));
686
687 regs = of_get_property(dp, "reg", NULL);
688 dp->irq_trans->data = irq_data;
689
690 irq_data->pbm_regs = regs[0].phys_addr;
691 irq_data->portid = of_getintprop_default(dp, "portid", 0);
692}
693#endif /* CONFIG_PCI */
694
695#ifdef CONFIG_SBUS
696/* INO number to IMAP register offset for SYSIO external IRQ's.
697 * This should conform to both Sunfire/Wildfire server and Fusion
698 * desktop designs.
699 */
700#define SYSIO_IMAP_SLOT0 0x2c00UL
701#define SYSIO_IMAP_SLOT1 0x2c08UL
702#define SYSIO_IMAP_SLOT2 0x2c10UL
703#define SYSIO_IMAP_SLOT3 0x2c18UL
704#define SYSIO_IMAP_SCSI 0x3000UL
705#define SYSIO_IMAP_ETH 0x3008UL
706#define SYSIO_IMAP_BPP 0x3010UL
707#define SYSIO_IMAP_AUDIO 0x3018UL
708#define SYSIO_IMAP_PFAIL 0x3020UL
709#define SYSIO_IMAP_KMS 0x3028UL
710#define SYSIO_IMAP_FLPY 0x3030UL
711#define SYSIO_IMAP_SHW 0x3038UL
712#define SYSIO_IMAP_KBD 0x3040UL
713#define SYSIO_IMAP_MS 0x3048UL
714#define SYSIO_IMAP_SER 0x3050UL
715#define SYSIO_IMAP_TIM0 0x3060UL
716#define SYSIO_IMAP_TIM1 0x3068UL
717#define SYSIO_IMAP_UE 0x3070UL
718#define SYSIO_IMAP_CE 0x3078UL
719#define SYSIO_IMAP_SBERR 0x3080UL
720#define SYSIO_IMAP_PMGMT 0x3088UL
721#define SYSIO_IMAP_GFX 0x3090UL
722#define SYSIO_IMAP_EUPA 0x3098UL
723
724#define bogon ((unsigned long) -1)
725static unsigned long sysio_irq_offsets[] = {
726 /* SBUS Slot 0 --> 3, level 1 --> 7 */
727 SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
728 SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
729 SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
730 SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
731 SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
732 SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
733 SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
734 SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
735
736 /* Onboard devices (not relevant/used on SunFire). */
737 SYSIO_IMAP_SCSI,
738 SYSIO_IMAP_ETH,
739 SYSIO_IMAP_BPP,
740 bogon,
741 SYSIO_IMAP_AUDIO,
742 SYSIO_IMAP_PFAIL,
743 bogon,
744 bogon,
745 SYSIO_IMAP_KMS,
746 SYSIO_IMAP_FLPY,
747 SYSIO_IMAP_SHW,
748 SYSIO_IMAP_KBD,
749 SYSIO_IMAP_MS,
750 SYSIO_IMAP_SER,
751 bogon,
752 bogon,
753 SYSIO_IMAP_TIM0,
754 SYSIO_IMAP_TIM1,
755 bogon,
756 bogon,
757 SYSIO_IMAP_UE,
758 SYSIO_IMAP_CE,
759 SYSIO_IMAP_SBERR,
760 SYSIO_IMAP_PMGMT,
761 SYSIO_IMAP_GFX,
762 SYSIO_IMAP_EUPA,
763};
764
765#undef bogon
766
767#define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets)
768
769/* Convert Interrupt Mapping register pointer to associated
770 * Interrupt Clear register pointer, SYSIO specific version.
771 */
772#define SYSIO_ICLR_UNUSED0 0x3400UL
773#define SYSIO_ICLR_SLOT0 0x3408UL
774#define SYSIO_ICLR_SLOT1 0x3448UL
775#define SYSIO_ICLR_SLOT2 0x3488UL
776#define SYSIO_ICLR_SLOT3 0x34c8UL
777static unsigned long sysio_imap_to_iclr(unsigned long imap)
778{
779 unsigned long diff = SYSIO_ICLR_UNUSED0 - SYSIO_IMAP_SLOT0;
780 return imap + diff;
781}
782
783static unsigned int sbus_of_build_irq(struct device_node *dp,
784 unsigned int ino,
785 void *_data)
786{
787 unsigned long reg_base = (unsigned long) _data;
788 const struct linux_prom_registers *regs;
789 unsigned long imap, iclr;
790 int sbus_slot = 0;
791 int sbus_level = 0;
792
793 ino &= 0x3f;
794
795 regs = of_get_property(dp, "reg", NULL);
796 if (regs)
797 sbus_slot = regs->which_io;
798
799 if (ino < 0x20)
800 ino += (sbus_slot * 8);
801
802 imap = sysio_irq_offsets[ino];
803 if (imap == ((unsigned long)-1)) {
804 prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n",
805 ino);
806 prom_halt();
807 }
808 imap += reg_base;
809
810 /* SYSIO inconsistency. For external SLOTS, we have to select
811 * the right ICLR register based upon the lower SBUS irq level
812 * bits.
813 */
814 if (ino >= 0x20) {
815 iclr = sysio_imap_to_iclr(imap);
816 } else {
817 sbus_level = ino & 0x7;
818
819 switch(sbus_slot) {
820 case 0:
821 iclr = reg_base + SYSIO_ICLR_SLOT0;
822 break;
823 case 1:
824 iclr = reg_base + SYSIO_ICLR_SLOT1;
825 break;
826 case 2:
827 iclr = reg_base + SYSIO_ICLR_SLOT2;
828 break;
829 default:
830 case 3:
831 iclr = reg_base + SYSIO_ICLR_SLOT3;
832 break;
833 };
834
835 iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
836 }
837 return build_irq(sbus_level, iclr, imap);
838}
839
840static void __init sbus_irq_trans_init(struct device_node *dp)
841{
842 const struct linux_prom64_registers *regs;
843
844 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
845 dp->irq_trans->irq_build = sbus_of_build_irq;
846
847 regs = of_get_property(dp, "reg", NULL);
848 dp->irq_trans->data = (void *) (unsigned long) regs->phys_addr;
849}
850#endif /* CONFIG_SBUS */
851
852
853static unsigned int central_build_irq(struct device_node *dp,
854 unsigned int ino,
855 void *_data)
856{
857 struct device_node *central_dp = _data;
858 struct of_device *central_op = of_find_device_by_node(central_dp);
859 struct resource *res;
860 unsigned long imap, iclr;
861 u32 tmp;
862
863 if (!strcmp(dp->name, "eeprom")) {
864 res = &central_op->resource[5];
865 } else if (!strcmp(dp->name, "zs")) {
866 res = &central_op->resource[4];
867 } else if (!strcmp(dp->name, "clock-board")) {
868 res = &central_op->resource[3];
869 } else {
870 return ino;
871 }
872
873 imap = res->start + 0x00UL;
874 iclr = res->start + 0x10UL;
875
876 /* Set the INO state to idle, and disable. */
877 upa_writel(0, iclr);
878 upa_readl(iclr);
879
880 tmp = upa_readl(imap);
881 tmp &= ~0x80000000;
882 upa_writel(tmp, imap);
883
884 return build_irq(0, iclr, imap);
885}
886
887static void __init central_irq_trans_init(struct device_node *dp)
888{
889 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
890 dp->irq_trans->irq_build = central_build_irq;
891
892 dp->irq_trans->data = dp;
893}
894
895struct irq_trans {
896 const char *name;
897 void (*init)(struct device_node *);
898};
899
900#ifdef CONFIG_PCI
901static struct irq_trans __initdata pci_irq_trans_table[] = {
902 { "SUNW,sabre", sabre_irq_trans_init },
903 { "pci108e,a000", sabre_irq_trans_init },
904 { "pci108e,a001", sabre_irq_trans_init },
905 { "SUNW,psycho", psycho_irq_trans_init },
906 { "pci108e,8000", psycho_irq_trans_init },
907 { "SUNW,schizo", schizo_irq_trans_init },
908 { "pci108e,8001", schizo_irq_trans_init },
909 { "SUNW,schizo+", schizo_irq_trans_init },
910 { "pci108e,8002", schizo_irq_trans_init },
911 { "SUNW,tomatillo", tomatillo_irq_trans_init },
912 { "pci108e,a801", tomatillo_irq_trans_init },
913 { "SUNW,sun4v-pci", pci_sun4v_irq_trans_init },
914 { "pciex108e,80f0", fire_irq_trans_init },
915};
916#endif
917
918static unsigned int sun4v_vdev_irq_build(struct device_node *dp,
919 unsigned int devino,
920 void *_data)
921{
922 u32 devhandle = (u32) (unsigned long) _data;
923
924 return sun4v_build_irq(devhandle, devino);
925}
926
927static void __init sun4v_vdev_irq_trans_init(struct device_node *dp)
928{
929 const struct linux_prom64_registers *regs;
930
931 dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));
932 dp->irq_trans->irq_build = sun4v_vdev_irq_build;
933
934 regs = of_get_property(dp, "reg", NULL);
935 dp->irq_trans->data = (void *) (unsigned long)
936 ((regs->phys_addr >> 32UL) & 0x0fffffff);
937}
938
939static void __init irq_trans_init(struct device_node *dp)
940{
941#ifdef CONFIG_PCI
942 const char *model;
943 int i;
944#endif
945
946#ifdef CONFIG_PCI
947 model = of_get_property(dp, "model", NULL);
948 if (!model)
949 model = of_get_property(dp, "compatible", NULL);
950 if (model) {
951 for (i = 0; i < ARRAY_SIZE(pci_irq_trans_table); i++) {
952 struct irq_trans *t = &pci_irq_trans_table[i];
953
954 if (!strcmp(model, t->name)) {
955 t->init(dp);
956 return;
957 }
958 }
959 }
960#endif
961#ifdef CONFIG_SBUS
962 if (!strcmp(dp->name, "sbus") ||
963 !strcmp(dp->name, "sbi")) {
964 sbus_irq_trans_init(dp);
965 return;
966 }
967#endif
968 if (!strcmp(dp->name, "fhc") &&
969 !strcmp(dp->parent->name, "central")) {
970 central_irq_trans_init(dp);
971 return;
972 }
973 if (!strcmp(dp->name, "virtual-devices") ||
974 !strcmp(dp->name, "niu")) {
975 sun4v_vdev_irq_trans_init(dp);
976 return;
977 }
978}
979
980static int is_root_node(const struct device_node *dp)
981{
982 if (!dp)
983 return 0;
984
985 return (dp->parent == NULL);
986}
987
988/* The following routines deal with the black magic of fully naming a
989 * node.
990 *
991 * Certain well known named nodes are just the simple name string.
992 *
993 * Actual devices have an address specifier appended to the base name
994 * string, like this "foo@addr". The "addr" can be in any number of
995 * formats, and the platform plus the type of the node determine the
996 * format and how it is constructed.
997 *
998 * For children of the ROOT node, the naming convention is fixed and
999 * determined by whether this is a sun4u or sun4v system.
1000 *
1001 * For children of other nodes, it is bus type specific. So
1002 * we walk up the tree until we discover a "device_type" property
1003 * we recognize and we go from there.
1004 *
1005 * As an example, the boot device on my workstation has a full path:
1006 *
1007 * /pci@1e,600000/ide@d/disk@0,0:c
1008 */
1009static void __init sun4v_path_component(struct device_node *dp, char *tmp_buf)
1010{
1011 struct linux_prom64_registers *regs;
1012 struct property *rprop;
1013 u32 high_bits, low_bits, type;
1014
1015 rprop = of_find_property(dp, "reg", NULL);
1016 if (!rprop)
1017 return;
1018
1019 regs = rprop->value;
1020 if (!is_root_node(dp->parent)) {
1021 sprintf(tmp_buf, "%s@%x,%x",
1022 dp->name,
1023 (unsigned int) (regs->phys_addr >> 32UL),
1024 (unsigned int) (regs->phys_addr & 0xffffffffUL));
1025 return;
1026 }
1027
1028 type = regs->phys_addr >> 60UL;
1029 high_bits = (regs->phys_addr >> 32UL) & 0x0fffffffUL;
1030 low_bits = (regs->phys_addr & 0xffffffffUL);
1031
1032 if (type == 0 || type == 8) {
1033 const char *prefix = (type == 0) ? "m" : "i";
1034
1035 if (low_bits)
1036 sprintf(tmp_buf, "%s@%s%x,%x",
1037 dp->name, prefix,
1038 high_bits, low_bits);
1039 else
1040 sprintf(tmp_buf, "%s@%s%x",
1041 dp->name,
1042 prefix,
1043 high_bits);
1044 } else if (type == 12) {
1045 sprintf(tmp_buf, "%s@%x",
1046 dp->name, high_bits);
1047 }
1048}
1049
1050static void __init sun4u_path_component(struct device_node *dp, char *tmp_buf)
1051{
1052 struct linux_prom64_registers *regs;
1053 struct property *prop;
1054
1055 prop = of_find_property(dp, "reg", NULL);
1056 if (!prop)
1057 return;
1058
1059 regs = prop->value;
1060 if (!is_root_node(dp->parent)) {
1061 sprintf(tmp_buf, "%s@%x,%x",
1062 dp->name,
1063 (unsigned int) (regs->phys_addr >> 32UL),
1064 (unsigned int) (regs->phys_addr & 0xffffffffUL));
1065 return;
1066 }
1067
1068 prop = of_find_property(dp, "upa-portid", NULL);
1069 if (!prop)
1070 prop = of_find_property(dp, "portid", NULL);
1071 if (prop) {
1072 unsigned long mask = 0xffffffffUL;
1073
1074 if (tlb_type >= cheetah)
1075 mask = 0x7fffff;
1076
1077 sprintf(tmp_buf, "%s@%x,%x",
1078 dp->name,
1079 *(u32 *)prop->value,
1080 (unsigned int) (regs->phys_addr & mask));
1081 }
1082}
1083
1084/* "name@slot,offset" */
1085static void __init sbus_path_component(struct device_node *dp, char *tmp_buf)
1086{
1087 struct linux_prom_registers *regs;
1088 struct property *prop;
1089
1090 prop = of_find_property(dp, "reg", NULL);
1091 if (!prop)
1092 return;
1093
1094 regs = prop->value;
1095 sprintf(tmp_buf, "%s@%x,%x",
1096 dp->name,
1097 regs->which_io,
1098 regs->phys_addr);
1099}
1100
1101/* "name@devnum[,func]" */
1102static void __init pci_path_component(struct device_node *dp, char *tmp_buf)
1103{
1104 struct linux_prom_pci_registers *regs;
1105 struct property *prop;
1106 unsigned int devfn;
1107
1108 prop = of_find_property(dp, "reg", NULL);
1109 if (!prop)
1110 return;
1111
1112 regs = prop->value;
1113 devfn = (regs->phys_hi >> 8) & 0xff;
1114 if (devfn & 0x07) {
1115 sprintf(tmp_buf, "%s@%x,%x",
1116 dp->name,
1117 devfn >> 3,
1118 devfn & 0x07);
1119 } else {
1120 sprintf(tmp_buf, "%s@%x",
1121 dp->name,
1122 devfn >> 3);
1123 }
1124}
1125
1126/* "name@UPA_PORTID,offset" */
1127static void __init upa_path_component(struct device_node *dp, char *tmp_buf)
1128{
1129 struct linux_prom64_registers *regs;
1130 struct property *prop;
1131
1132 prop = of_find_property(dp, "reg", NULL);
1133 if (!prop)
1134 return;
1135
1136 regs = prop->value;
1137
1138 prop = of_find_property(dp, "upa-portid", NULL);
1139 if (!prop)
1140 return;
1141
1142 sprintf(tmp_buf, "%s@%x,%x",
1143 dp->name,
1144 *(u32 *) prop->value,
1145 (unsigned int) (regs->phys_addr & 0xffffffffUL));
1146}
1147
1148/* "name@reg" */
1149static void __init vdev_path_component(struct device_node *dp, char *tmp_buf)
1150{
1151 struct property *prop;
1152 u32 *regs;
1153
1154 prop = of_find_property(dp, "reg", NULL);
1155 if (!prop)
1156 return;
1157
1158 regs = prop->value;
1159
1160 sprintf(tmp_buf, "%s@%x", dp->name, *regs);
1161}
1162
1163/* "name@addrhi,addrlo" */
1164static void __init ebus_path_component(struct device_node *dp, char *tmp_buf)
1165{
1166 struct linux_prom64_registers *regs;
1167 struct property *prop;
1168
1169 prop = of_find_property(dp, "reg", NULL);
1170 if (!prop)
1171 return;
1172
1173 regs = prop->value;
1174
1175 sprintf(tmp_buf, "%s@%x,%x",
1176 dp->name,
1177 (unsigned int) (regs->phys_addr >> 32UL),
1178 (unsigned int) (regs->phys_addr & 0xffffffffUL));
1179}
1180
1181/* "name@bus,addr" */
1182static void __init i2c_path_component(struct device_node *dp, char *tmp_buf)
1183{
1184 struct property *prop;
1185 u32 *regs;
1186
1187 prop = of_find_property(dp, "reg", NULL);
1188 if (!prop)
1189 return;
1190
1191 regs = prop->value;
1192
1193 /* This actually isn't right... should look at the #address-cells
1194 * property of the i2c bus node etc. etc.
1195 */
1196 sprintf(tmp_buf, "%s@%x,%x",
1197 dp->name, regs[0], regs[1]);
1198}
1199
1200/* "name@reg0[,reg1]" */
1201static void __init usb_path_component(struct device_node *dp, char *tmp_buf)
1202{
1203 struct property *prop;
1204 u32 *regs;
1205
1206 prop = of_find_property(dp, "reg", NULL);
1207 if (!prop)
1208 return;
1209
1210 regs = prop->value;
1211
1212 if (prop->length == sizeof(u32) || regs[1] == 1) {
1213 sprintf(tmp_buf, "%s@%x",
1214 dp->name, regs[0]);
1215 } else {
1216 sprintf(tmp_buf, "%s@%x,%x",
1217 dp->name, regs[0], regs[1]);
1218 }
1219}
1220
1221/* "name@reg0reg1[,reg2reg3]" */
1222static void __init ieee1394_path_component(struct device_node *dp, char *tmp_buf)
1223{
1224 struct property *prop;
1225 u32 *regs;
1226
1227 prop = of_find_property(dp, "reg", NULL);
1228 if (!prop)
1229 return;
1230
1231 regs = prop->value;
1232
1233 if (regs[2] || regs[3]) {
1234 sprintf(tmp_buf, "%s@%08x%08x,%04x%08x",
1235 dp->name, regs[0], regs[1], regs[2], regs[3]);
1236 } else {
1237 sprintf(tmp_buf, "%s@%08x%08x",
1238 dp->name, regs[0], regs[1]);
1239 }
1240}
1241
1242static void __init __build_path_component(struct device_node *dp, char *tmp_buf)
1243{
1244 struct device_node *parent = dp->parent;
1245
1246 if (parent != NULL) {
1247 if (!strcmp(parent->type, "pci") ||
1248 !strcmp(parent->type, "pciex")) {
1249 pci_path_component(dp, tmp_buf);
1250 return;
1251 }
1252 if (!strcmp(parent->type, "sbus")) {
1253 sbus_path_component(dp, tmp_buf);
1254 return;
1255 }
1256 if (!strcmp(parent->type, "upa")) {
1257 upa_path_component(dp, tmp_buf);
1258 return;
1259 }
1260 if (!strcmp(parent->type, "ebus")) {
1261 ebus_path_component(dp, tmp_buf);
1262 return;
1263 }
1264 if (!strcmp(parent->name, "usb") ||
1265 !strcmp(parent->name, "hub")) {
1266 usb_path_component(dp, tmp_buf);
1267 return;
1268 }
1269 if (!strcmp(parent->type, "i2c")) {
1270 i2c_path_component(dp, tmp_buf);
1271 return;
1272 }
1273 if (!strcmp(parent->type, "firewire")) {
1274 ieee1394_path_component(dp, tmp_buf);
1275 return;
1276 }
1277 if (!strcmp(parent->type, "virtual-devices")) {
1278 vdev_path_component(dp, tmp_buf);
1279 return;
1280 }
1281 /* "isa" is handled with platform naming */
1282 }
1283
1284 /* Use platform naming convention. */
1285 if (tlb_type == hypervisor) {
1286 sun4v_path_component(dp, tmp_buf);
1287 return;
1288 } else {
1289 sun4u_path_component(dp, tmp_buf);
1290 }
1291}
1292
1293static char * __init build_path_component(struct device_node *dp)
1294{
1295 char tmp_buf[64], *n;
1296
1297 tmp_buf[0] = '\0';
1298 __build_path_component(dp, tmp_buf);
1299 if (tmp_buf[0] == '\0')
1300 strcpy(tmp_buf, dp->name);
1301
1302 n = prom_early_alloc(strlen(tmp_buf) + 1);
1303 strcpy(n, tmp_buf);
1304
1305 return n;
1306}
1307
1308static char * __init build_full_name(struct device_node *dp)
1309{
1310 int len, ourlen, plen;
1311 char *n;
1312
1313 plen = strlen(dp->parent->full_name);
1314 ourlen = strlen(dp->path_component_name);
1315 len = ourlen + plen + 2;
1316
1317 n = prom_early_alloc(len);
1318 strcpy(n, dp->parent->full_name);
1319 if (!is_root_node(dp->parent)) {
1320 strcpy(n + plen, "/");
1321 plen++;
1322 }
1323 strcpy(n + plen, dp->path_component_name);
1324
1325 return n;
1326}
1327
1328static unsigned int unique_id;
1329
1330static struct property * __init build_one_prop(phandle node, char *prev, char *special_name, void *special_val, int special_len)
1331{
1332 static struct property *tmp = NULL;
1333 struct property *p;
1334
1335 if (tmp) {
1336 p = tmp;
1337 memset(p, 0, sizeof(*p) + 32);
1338 tmp = NULL;
1339 } else {
1340 p = prom_early_alloc(sizeof(struct property) + 32);
1341 p->unique_id = unique_id++;
1342 }
1343
1344 p->name = (char *) (p + 1);
1345 if (special_name) {
1346 strcpy(p->name, special_name);
1347 p->length = special_len;
1348 p->value = prom_early_alloc(special_len);
1349 memcpy(p->value, special_val, special_len);
1350 } else {
1351 if (prev == NULL) {
1352 prom_firstprop(node, p->name);
1353 } else {
1354 prom_nextprop(node, prev, p->name);
1355 }
1356 if (strlen(p->name) == 0) {
1357 tmp = p;
1358 return NULL;
1359 }
1360 p->length = prom_getproplen(node, p->name);
1361 if (p->length <= 0) {
1362 p->length = 0;
1363 } else {
1364 p->value = prom_early_alloc(p->length + 1);
1365 prom_getproperty(node, p->name, p->value, p->length);
1366 ((unsigned char *)p->value)[p->length] = '\0';
1367 }
1368 }
1369 return p;
1370}
1371
1372static struct property * __init build_prop_list(phandle node)
1373{
1374 struct property *head, *tail;
1375
1376 head = tail = build_one_prop(node, NULL,
1377 ".node", &node, sizeof(node));
1378
1379 tail->next = build_one_prop(node, NULL, NULL, NULL, 0);
1380 tail = tail->next;
1381 while(tail) {
1382 tail->next = build_one_prop(node, tail->name,
1383 NULL, NULL, 0);
1384 tail = tail->next;
1385 }
1386
1387 return head;
1388}
1389
1390static char * __init get_one_property(phandle node, const char *name)
1391{
1392 char *buf = "<NULL>";
1393 int len;
1394
1395 len = prom_getproplen(node, name);
1396 if (len > 0) {
1397 buf = prom_early_alloc(len);
1398 prom_getproperty(node, name, buf, len);
1399 }
1400
1401 return buf;
1402}
1403
1404static struct device_node * __init create_node(phandle node, struct device_node *parent)
1405{
1406 struct device_node *dp;
1407
1408 if (!node)
1409 return NULL;
1410
1411 dp = prom_early_alloc(sizeof(*dp));
1412 dp->unique_id = unique_id++;
1413 dp->parent = parent;
1414
1415 kref_init(&dp->kref);
1416
1417 dp->name = get_one_property(node, "name");
1418 dp->type = get_one_property(node, "device_type");
1419 dp->node = node;
1420
1421 dp->properties = build_prop_list(node);
1422
1423 irq_trans_init(dp);
1424
1425 return dp;
1426}
1427
1428static struct device_node * __init build_tree(struct device_node *parent, phandle node, struct device_node ***nextp)
1429{
1430 struct device_node *ret = NULL, *prev_sibling = NULL;
1431 struct device_node *dp;
1432
1433 while (1) {
1434 dp = create_node(node, parent);
1435 if (!dp)
1436 break;
1437
1438 if (prev_sibling)
1439 prev_sibling->sibling = dp;
1440
1441 if (!ret)
1442 ret = dp;
1443 prev_sibling = dp;
1444
1445 *(*nextp) = dp;
1446 *nextp = &dp->allnext;
1447
1448 dp->path_component_name = build_path_component(dp);
1449 dp->full_name = build_full_name(dp);
1450
1451 dp->child = build_tree(dp, prom_getchild(node), nextp);
1452
1453 node = prom_getsibling(node);
1454 }
1455
1456 return ret;
1457}
1458
1459static const char *get_mid_prop(void)
1460{
1461 return (tlb_type == spitfire ? "upa-portid" : "portid");
1462}
1463
1464struct device_node *of_find_node_by_cpuid(int cpuid)
1465{
1466 struct device_node *dp;
1467 const char *mid_prop = get_mid_prop();
1468
1469 for_each_node_by_type(dp, "cpu") {
1470 int id = of_getintprop_default(dp, mid_prop, -1);
1471 const char *this_mid_prop = mid_prop;
1472
1473 if (id < 0) {
1474 this_mid_prop = "cpuid";
1475 id = of_getintprop_default(dp, this_mid_prop, -1);
1476 }
1477
1478 if (id < 0) {
1479 prom_printf("OF: Serious problem, cpu lacks "
1480 "%s property", this_mid_prop);
1481 prom_halt();
1482 }
1483 if (cpuid == id)
1484 return dp;
1485 }
1486 return NULL;
1487}
1488
1489static void __init of_fill_in_cpu_data(void)
1490{
1491 struct device_node *dp;
1492 const char *mid_prop = get_mid_prop();
1493
1494 ncpus_probed = 0;
1495 for_each_node_by_type(dp, "cpu") {
1496 int cpuid = of_getintprop_default(dp, mid_prop, -1);
1497 const char *this_mid_prop = mid_prop;
1498 struct device_node *portid_parent;
1499 int portid = -1;
1500
1501 portid_parent = NULL;
1502 if (cpuid < 0) {
1503 this_mid_prop = "cpuid";
1504 cpuid = of_getintprop_default(dp, this_mid_prop, -1);
1505 if (cpuid >= 0) {
1506 int limit = 2;
1507
1508 portid_parent = dp;
1509 while (limit--) {
1510 portid_parent = portid_parent->parent;
1511 if (!portid_parent)
1512 break;
1513 portid = of_getintprop_default(portid_parent,
1514 "portid", -1);
1515 if (portid >= 0)
1516 break;
1517 }
1518 }
1519 }
1520
1521 if (cpuid < 0) {
1522 prom_printf("OF: Serious problem, cpu lacks "
1523 "%s property", this_mid_prop);
1524 prom_halt();
1525 }
1526
1527 ncpus_probed++;
1528
1529#ifdef CONFIG_SMP
1530 if (cpuid >= NR_CPUS) {
1531 printk(KERN_WARNING "Ignoring CPU %d which is "
1532 ">= NR_CPUS (%d)\n",
1533 cpuid, NR_CPUS);
1534 continue;
1535 }
1536#else
1537 /* On uniprocessor we only want the values for the
1538 * real physical cpu the kernel booted onto, however
1539 * cpu_data() only has one entry at index 0.
1540 */
1541 if (cpuid != real_hard_smp_processor_id())
1542 continue;
1543 cpuid = 0;
1544#endif
1545
1546 cpu_data(cpuid).clock_tick =
1547 of_getintprop_default(dp, "clock-frequency", 0);
1548
1549 if (portid_parent) {
1550 cpu_data(cpuid).dcache_size =
1551 of_getintprop_default(dp, "l1-dcache-size",
1552 16 * 1024);
1553 cpu_data(cpuid).dcache_line_size =
1554 of_getintprop_default(dp, "l1-dcache-line-size",
1555 32);
1556 cpu_data(cpuid).icache_size =
1557 of_getintprop_default(dp, "l1-icache-size",
1558 8 * 1024);
1559 cpu_data(cpuid).icache_line_size =
1560 of_getintprop_default(dp, "l1-icache-line-size",
1561 32);
1562 cpu_data(cpuid).ecache_size =
1563 of_getintprop_default(dp, "l2-cache-size", 0);
1564 cpu_data(cpuid).ecache_line_size =
1565 of_getintprop_default(dp, "l2-cache-line-size", 0);
1566 if (!cpu_data(cpuid).ecache_size ||
1567 !cpu_data(cpuid).ecache_line_size) {
1568 cpu_data(cpuid).ecache_size =
1569 of_getintprop_default(portid_parent,
1570 "l2-cache-size",
1571 (4 * 1024 * 1024));
1572 cpu_data(cpuid).ecache_line_size =
1573 of_getintprop_default(portid_parent,
1574 "l2-cache-line-size", 64);
1575 }
1576
1577 cpu_data(cpuid).core_id = portid + 1;
1578 cpu_data(cpuid).proc_id = portid;
1579#ifdef CONFIG_SMP
1580 sparc64_multi_core = 1;
1581#endif
1582 } else {
1583 cpu_data(cpuid).dcache_size =
1584 of_getintprop_default(dp, "dcache-size", 16 * 1024);
1585 cpu_data(cpuid).dcache_line_size =
1586 of_getintprop_default(dp, "dcache-line-size", 32);
1587
1588 cpu_data(cpuid).icache_size =
1589 of_getintprop_default(dp, "icache-size", 16 * 1024);
1590 cpu_data(cpuid).icache_line_size =
1591 of_getintprop_default(dp, "icache-line-size", 32);
1592
1593 cpu_data(cpuid).ecache_size =
1594 of_getintprop_default(dp, "ecache-size",
1595 (4 * 1024 * 1024));
1596 cpu_data(cpuid).ecache_line_size =
1597 of_getintprop_default(dp, "ecache-line-size", 64);
1598
1599 cpu_data(cpuid).core_id = 0;
1600 cpu_data(cpuid).proc_id = -1;
1601 }
1602
1603#ifdef CONFIG_SMP
1604 cpu_set(cpuid, cpu_present_map);
1605 cpu_set(cpuid, cpu_possible_map);
1606#endif
1607 }
1608
1609 smp_fill_in_sib_core_maps();
1610}
1611
1612struct device_node *of_console_device;
1613EXPORT_SYMBOL(of_console_device);
1614
1615char *of_console_path;
1616EXPORT_SYMBOL(of_console_path);
1617
1618char *of_console_options;
1619EXPORT_SYMBOL(of_console_options);
1620
1621static void __init of_console_init(void)
1622{
1623 char *msg = "OF stdout device is: %s\n";
1624 struct device_node *dp;
1625 const char *type;
1626 phandle node;
1627
1628 of_console_path = prom_early_alloc(256);
1629 if (prom_ihandle2path(prom_stdout, of_console_path, 256) < 0) {
1630 prom_printf("Cannot obtain path of stdout.\n");
1631 prom_halt();
1632 }
1633 of_console_options = strrchr(of_console_path, ':');
1634 if (of_console_options) {
1635 of_console_options++;
1636 if (*of_console_options == '\0')
1637 of_console_options = NULL;
1638 }
1639
1640 node = prom_inst2pkg(prom_stdout);
1641 if (!node) {
1642 prom_printf("Cannot resolve stdout node from "
1643 "instance %08x.\n", prom_stdout);
1644 prom_halt();
1645 }
1646
1647 dp = of_find_node_by_phandle(node);
1648 type = of_get_property(dp, "device_type", NULL);
1649 if (!type) {
1650 prom_printf("Console stdout lacks device_type property.\n");
1651 prom_halt();
1652 }
1653
1654 if (strcmp(type, "display") && strcmp(type, "serial")) {
1655 prom_printf("Console device_type is neither display "
1656 "nor serial.\n");
1657 prom_halt();
1658 }
1659
1660 of_console_device = dp;
1661
1662 printk(msg, of_console_path);
1663}
1664
1665void __init prom_build_devicetree(void)
1666{
1667 struct device_node **nextp;
1668
1669 allnodes = create_node(prom_root_node, NULL);
1670 allnodes->path_component_name = "";
1671 allnodes->full_name = "/";
1672
1673 nextp = &allnodes->allnext;
1674 allnodes->child = build_tree(allnodes,
1675 prom_getchild(allnodes->node),
1676 &nextp);
1677 of_console_init();
1678
1679 printk("PROM: Built device tree with %u bytes of memory.\n",
1680 prom_early_allocated);
1681
1682 if (tlb_type != hypervisor)
1683 of_fill_in_cpu_data();
1684}
diff --git a/arch/sparc/kernel/psycho_common.c b/arch/sparc/kernel/psycho_common.c
new file mode 100644
index 000000000000..790996428c14
--- /dev/null
+++ b/arch/sparc/kernel/psycho_common.c
@@ -0,0 +1,470 @@
1/* psycho_common.c: Code common to PSYCHO and derivative PCI controllers.
2 *
3 * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
4 */
5#include <linux/kernel.h>
6#include <linux/interrupt.h>
7
8#include <asm/upa.h>
9
10#include "pci_impl.h"
11#include "iommu_common.h"
12#include "psycho_common.h"
13
14#define PSYCHO_STRBUF_CTRL_DENAB 0x0000000000000002UL
15#define PSYCHO_STCERR_WRITE 0x0000000000000002UL
16#define PSYCHO_STCERR_READ 0x0000000000000001UL
17#define PSYCHO_STCTAG_PPN 0x0fffffff00000000UL
18#define PSYCHO_STCTAG_VPN 0x00000000ffffe000UL
19#define PSYCHO_STCTAG_VALID 0x0000000000000002UL
20#define PSYCHO_STCTAG_WRITE 0x0000000000000001UL
21#define PSYCHO_STCLINE_LINDX 0x0000000001e00000UL
22#define PSYCHO_STCLINE_SPTR 0x00000000001f8000UL
23#define PSYCHO_STCLINE_LADDR 0x0000000000007f00UL
24#define PSYCHO_STCLINE_EPTR 0x00000000000000fcUL
25#define PSYCHO_STCLINE_VALID 0x0000000000000002UL
26#define PSYCHO_STCLINE_FOFN 0x0000000000000001UL
27
28static DEFINE_SPINLOCK(stc_buf_lock);
29static unsigned long stc_error_buf[128];
30static unsigned long stc_tag_buf[16];
31static unsigned long stc_line_buf[16];
32
33static void psycho_check_stc_error(struct pci_pbm_info *pbm)
34{
35 unsigned long err_base, tag_base, line_base;
36 struct strbuf *strbuf = &pbm->stc;
37 u64 control;
38 int i;
39
40 if (!strbuf->strbuf_control)
41 return;
42
43 err_base = strbuf->strbuf_err_stat;
44 tag_base = strbuf->strbuf_tag_diag;
45 line_base = strbuf->strbuf_line_diag;
46
47 spin_lock(&stc_buf_lock);
48
49 /* This is __REALLY__ dangerous. When we put the streaming
50 * buffer into diagnostic mode to probe it's tags and error
51 * status, we _must_ clear all of the line tag valid bits
52 * before re-enabling the streaming buffer. If any dirty data
53 * lives in the STC when we do this, we will end up
54 * invalidating it before it has a chance to reach main
55 * memory.
56 */
57 control = upa_readq(strbuf->strbuf_control);
58 upa_writeq(control | PSYCHO_STRBUF_CTRL_DENAB, strbuf->strbuf_control);
59 for (i = 0; i < 128; i++) {
60 u64 val;
61
62 val = upa_readq(err_base + (i * 8UL));
63 upa_writeq(0UL, err_base + (i * 8UL));
64 stc_error_buf[i] = val;
65 }
66 for (i = 0; i < 16; i++) {
67 stc_tag_buf[i] = upa_readq(tag_base + (i * 8UL));
68 stc_line_buf[i] = upa_readq(line_base + (i * 8UL));
69 upa_writeq(0UL, tag_base + (i * 8UL));
70 upa_writeq(0UL, line_base + (i * 8UL));
71 }
72
73 /* OK, state is logged, exit diagnostic mode. */
74 upa_writeq(control, strbuf->strbuf_control);
75
76 for (i = 0; i < 16; i++) {
77 int j, saw_error, first, last;
78
79 saw_error = 0;
80 first = i * 8;
81 last = first + 8;
82 for (j = first; j < last; j++) {
83 u64 errval = stc_error_buf[j];
84 if (errval != 0) {
85 saw_error++;
86 printk(KERN_ERR "%s: STC_ERR(%d)[wr(%d)"
87 "rd(%d)]\n",
88 pbm->name,
89 j,
90 (errval & PSYCHO_STCERR_WRITE) ? 1 : 0,
91 (errval & PSYCHO_STCERR_READ) ? 1 : 0);
92 }
93 }
94 if (saw_error != 0) {
95 u64 tagval = stc_tag_buf[i];
96 u64 lineval = stc_line_buf[i];
97 printk(KERN_ERR "%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)"
98 "V(%d)W(%d)]\n",
99 pbm->name,
100 i,
101 ((tagval & PSYCHO_STCTAG_PPN) >> 19UL),
102 (tagval & PSYCHO_STCTAG_VPN),
103 ((tagval & PSYCHO_STCTAG_VALID) ? 1 : 0),
104 ((tagval & PSYCHO_STCTAG_WRITE) ? 1 : 0));
105 printk(KERN_ERR "%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)"
106 "LADDR(%lx)EP(%lx)V(%d)FOFN(%d)]\n",
107 pbm->name,
108 i,
109 ((lineval & PSYCHO_STCLINE_LINDX) >> 21UL),
110 ((lineval & PSYCHO_STCLINE_SPTR) >> 15UL),
111 ((lineval & PSYCHO_STCLINE_LADDR) >> 8UL),
112 ((lineval & PSYCHO_STCLINE_EPTR) >> 2UL),
113 ((lineval & PSYCHO_STCLINE_VALID) ? 1 : 0),
114 ((lineval & PSYCHO_STCLINE_FOFN) ? 1 : 0));
115 }
116 }
117
118 spin_unlock(&stc_buf_lock);
119}
120
121#define PSYCHO_IOMMU_TAG 0xa580UL
122#define PSYCHO_IOMMU_DATA 0xa600UL
123
124static void psycho_record_iommu_tags_and_data(struct pci_pbm_info *pbm,
125 u64 *tag, u64 *data)
126{
127 int i;
128
129 for (i = 0; i < 16; i++) {
130 unsigned long base = pbm->controller_regs;
131 unsigned long off = i * 8UL;
132
133 tag[i] = upa_readq(base + PSYCHO_IOMMU_TAG+off);
134 data[i] = upa_readq(base + PSYCHO_IOMMU_DATA+off);
135
136 /* Now clear out the entry. */
137 upa_writeq(0, base + PSYCHO_IOMMU_TAG + off);
138 upa_writeq(0, base + PSYCHO_IOMMU_DATA + off);
139 }
140}
141
142#define PSYCHO_IOMMU_TAG_ERRSTS (0x3UL << 23UL)
143#define PSYCHO_IOMMU_TAG_ERR (0x1UL << 22UL)
144#define PSYCHO_IOMMU_TAG_WRITE (0x1UL << 21UL)
145#define PSYCHO_IOMMU_TAG_STREAM (0x1UL << 20UL)
146#define PSYCHO_IOMMU_TAG_SIZE (0x1UL << 19UL)
147#define PSYCHO_IOMMU_TAG_VPAGE 0x7ffffUL
148#define PSYCHO_IOMMU_DATA_VALID (1UL << 30UL)
149#define PSYCHO_IOMMU_DATA_CACHE (1UL << 28UL)
150#define PSYCHO_IOMMU_DATA_PPAGE 0xfffffffUL
151
152static void psycho_dump_iommu_tags_and_data(struct pci_pbm_info *pbm,
153 u64 *tag, u64 *data)
154{
155 int i;
156
157 for (i = 0; i < 16; i++) {
158 u64 tag_val, data_val;
159 const char *type_str;
160 tag_val = tag[i];
161 if (!(tag_val & PSYCHO_IOMMU_TAG_ERR))
162 continue;
163
164 data_val = data[i];
165 switch((tag_val & PSYCHO_IOMMU_TAG_ERRSTS) >> 23UL) {
166 case 0:
167 type_str = "Protection Error";
168 break;
169 case 1:
170 type_str = "Invalid Error";
171 break;
172 case 2:
173 type_str = "TimeOut Error";
174 break;
175 case 3:
176 default:
177 type_str = "ECC Error";
178 break;
179 }
180
181 printk(KERN_ERR "%s: IOMMU TAG(%d)[error(%s) wr(%d) "
182 "str(%d) sz(%dK) vpg(%08lx)]\n",
183 pbm->name, i, type_str,
184 ((tag_val & PSYCHO_IOMMU_TAG_WRITE) ? 1 : 0),
185 ((tag_val & PSYCHO_IOMMU_TAG_STREAM) ? 1 : 0),
186 ((tag_val & PSYCHO_IOMMU_TAG_SIZE) ? 64 : 8),
187 (tag_val & PSYCHO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
188 printk(KERN_ERR "%s: IOMMU DATA(%d)[valid(%d) cache(%d) "
189 "ppg(%016lx)]\n",
190 pbm->name, i,
191 ((data_val & PSYCHO_IOMMU_DATA_VALID) ? 1 : 0),
192 ((data_val & PSYCHO_IOMMU_DATA_CACHE) ? 1 : 0),
193 (data_val & PSYCHO_IOMMU_DATA_PPAGE)<<IOMMU_PAGE_SHIFT);
194 }
195}
196
197#define PSYCHO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL
198#define PSYCHO_IOMMU_CTRL_XLTEERR 0x0000000001000000UL
199
200void psycho_check_iommu_error(struct pci_pbm_info *pbm,
201 unsigned long afsr,
202 unsigned long afar,
203 enum psycho_error_type type)
204{
205 u64 control, iommu_tag[16], iommu_data[16];
206 struct iommu *iommu = pbm->iommu;
207 unsigned long flags;
208
209 spin_lock_irqsave(&iommu->lock, flags);
210 control = upa_readq(iommu->iommu_control);
211 if (control & PSYCHO_IOMMU_CTRL_XLTEERR) {
212 const char *type_str;
213
214 control &= ~PSYCHO_IOMMU_CTRL_XLTEERR;
215 upa_writeq(control, iommu->iommu_control);
216
217 switch ((control & PSYCHO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
218 case 0:
219 type_str = "Protection Error";
220 break;
221 case 1:
222 type_str = "Invalid Error";
223 break;
224 case 2:
225 type_str = "TimeOut Error";
226 break;
227 case 3:
228 default:
229 type_str = "ECC Error";
230 break;
231 };
232 printk(KERN_ERR "%s: IOMMU Error, type[%s]\n",
233 pbm->name, type_str);
234
235 /* It is very possible for another DVMA to occur while
236 * we do this probe, and corrupt the system further.
237 * But we are so screwed at this point that we are
238 * likely to crash hard anyways, so get as much
239 * diagnostic information to the console as we can.
240 */
241 psycho_record_iommu_tags_and_data(pbm, iommu_tag, iommu_data);
242 psycho_dump_iommu_tags_and_data(pbm, iommu_tag, iommu_data);
243 }
244 psycho_check_stc_error(pbm);
245 spin_unlock_irqrestore(&iommu->lock, flags);
246}
247
248#define PSYCHO_PCICTRL_SBH_ERR 0x0000000800000000UL
249#define PSYCHO_PCICTRL_SERR 0x0000000400000000UL
250
251static irqreturn_t psycho_pcierr_intr_other(struct pci_pbm_info *pbm)
252{
253 irqreturn_t ret = IRQ_NONE;
254 u64 csr, csr_error_bits;
255 u16 stat, *addr;
256
257 csr = upa_readq(pbm->pci_csr);
258 csr_error_bits = csr & (PSYCHO_PCICTRL_SBH_ERR | PSYCHO_PCICTRL_SERR);
259 if (csr_error_bits) {
260 /* Clear the errors. */
261 upa_writeq(csr, pbm->pci_csr);
262
263 /* Log 'em. */
264 if (csr_error_bits & PSYCHO_PCICTRL_SBH_ERR)
265 printk(KERN_ERR "%s: PCI streaming byte hole "
266 "error asserted.\n", pbm->name);
267 if (csr_error_bits & PSYCHO_PCICTRL_SERR)
268 printk(KERN_ERR "%s: PCI SERR signal asserted.\n",
269 pbm->name);
270 ret = IRQ_HANDLED;
271 }
272 addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
273 0, PCI_STATUS);
274 pci_config_read16(addr, &stat);
275 if (stat & (PCI_STATUS_PARITY |
276 PCI_STATUS_SIG_TARGET_ABORT |
277 PCI_STATUS_REC_TARGET_ABORT |
278 PCI_STATUS_REC_MASTER_ABORT |
279 PCI_STATUS_SIG_SYSTEM_ERROR)) {
280 printk(KERN_ERR "%s: PCI bus error, PCI_STATUS[%04x]\n",
281 pbm->name, stat);
282 pci_config_write16(addr, 0xffff);
283 ret = IRQ_HANDLED;
284 }
285 return ret;
286}
287
288#define PSYCHO_PCIAFSR_PMA 0x8000000000000000UL
289#define PSYCHO_PCIAFSR_PTA 0x4000000000000000UL
290#define PSYCHO_PCIAFSR_PRTRY 0x2000000000000000UL
291#define PSYCHO_PCIAFSR_PPERR 0x1000000000000000UL
292#define PSYCHO_PCIAFSR_SMA 0x0800000000000000UL
293#define PSYCHO_PCIAFSR_STA 0x0400000000000000UL
294#define PSYCHO_PCIAFSR_SRTRY 0x0200000000000000UL
295#define PSYCHO_PCIAFSR_SPERR 0x0100000000000000UL
296#define PSYCHO_PCIAFSR_RESV1 0x00ff000000000000UL
297#define PSYCHO_PCIAFSR_BMSK 0x0000ffff00000000UL
298#define PSYCHO_PCIAFSR_BLK 0x0000000080000000UL
299#define PSYCHO_PCIAFSR_RESV2 0x0000000040000000UL
300#define PSYCHO_PCIAFSR_MID 0x000000003e000000UL
301#define PSYCHO_PCIAFSR_RESV3 0x0000000001ffffffUL
302
303irqreturn_t psycho_pcierr_intr(int irq, void *dev_id)
304{
305 struct pci_pbm_info *pbm = dev_id;
306 u64 afsr, afar, error_bits;
307 int reported;
308
309 afsr = upa_readq(pbm->pci_afsr);
310 afar = upa_readq(pbm->pci_afar);
311 error_bits = afsr &
312 (PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_PTA |
313 PSYCHO_PCIAFSR_PRTRY | PSYCHO_PCIAFSR_PPERR |
314 PSYCHO_PCIAFSR_SMA | PSYCHO_PCIAFSR_STA |
315 PSYCHO_PCIAFSR_SRTRY | PSYCHO_PCIAFSR_SPERR);
316 if (!error_bits)
317 return psycho_pcierr_intr_other(pbm);
318 upa_writeq(error_bits, pbm->pci_afsr);
319 printk(KERN_ERR "%s: PCI Error, primary error type[%s]\n",
320 pbm->name,
321 (((error_bits & PSYCHO_PCIAFSR_PMA) ?
322 "Master Abort" :
323 ((error_bits & PSYCHO_PCIAFSR_PTA) ?
324 "Target Abort" :
325 ((error_bits & PSYCHO_PCIAFSR_PRTRY) ?
326 "Excessive Retries" :
327 ((error_bits & PSYCHO_PCIAFSR_PPERR) ?
328 "Parity Error" : "???"))))));
329 printk(KERN_ERR "%s: bytemask[%04lx] UPA_MID[%02lx] was_block(%d)\n",
330 pbm->name,
331 (afsr & PSYCHO_PCIAFSR_BMSK) >> 32UL,
332 (afsr & PSYCHO_PCIAFSR_MID) >> 25UL,
333 (afsr & PSYCHO_PCIAFSR_BLK) ? 1 : 0);
334 printk(KERN_ERR "%s: PCI AFAR [%016lx]\n", pbm->name, afar);
335 printk(KERN_ERR "%s: PCI Secondary errors [", pbm->name);
336 reported = 0;
337 if (afsr & PSYCHO_PCIAFSR_SMA) {
338 reported++;
339 printk("(Master Abort)");
340 }
341 if (afsr & PSYCHO_PCIAFSR_STA) {
342 reported++;
343 printk("(Target Abort)");
344 }
345 if (afsr & PSYCHO_PCIAFSR_SRTRY) {
346 reported++;
347 printk("(Excessive Retries)");
348 }
349 if (afsr & PSYCHO_PCIAFSR_SPERR) {
350 reported++;
351 printk("(Parity Error)");
352 }
353 if (!reported)
354 printk("(none)");
355 printk("]\n");
356
357 if (error_bits & (PSYCHO_PCIAFSR_PTA | PSYCHO_PCIAFSR_STA)) {
358 psycho_check_iommu_error(pbm, afsr, afar, PCI_ERR);
359 pci_scan_for_target_abort(pbm, pbm->pci_bus);
360 }
361 if (error_bits & (PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_SMA))
362 pci_scan_for_master_abort(pbm, pbm->pci_bus);
363
364 if (error_bits & (PSYCHO_PCIAFSR_PPERR | PSYCHO_PCIAFSR_SPERR))
365 pci_scan_for_parity_error(pbm, pbm->pci_bus);
366
367 return IRQ_HANDLED;
368}
369
370static void psycho_iommu_flush(struct pci_pbm_info *pbm)
371{
372 int i;
373
374 for (i = 0; i < 16; i++) {
375 unsigned long off = i * 8;
376
377 upa_writeq(0, pbm->controller_regs + PSYCHO_IOMMU_TAG + off);
378 upa_writeq(0, pbm->controller_regs + PSYCHO_IOMMU_DATA + off);
379 }
380}
381
382#define PSYCHO_IOMMU_CONTROL 0x0200UL
383#define PSYCHO_IOMMU_CTRL_TSBSZ 0x0000000000070000UL
384#define PSYCHO_IOMMU_TSBSZ_1K 0x0000000000000000UL
385#define PSYCHO_IOMMU_TSBSZ_2K 0x0000000000010000UL
386#define PSYCHO_IOMMU_TSBSZ_4K 0x0000000000020000UL
387#define PSYCHO_IOMMU_TSBSZ_8K 0x0000000000030000UL
388#define PSYCHO_IOMMU_TSBSZ_16K 0x0000000000040000UL
389#define PSYCHO_IOMMU_TSBSZ_32K 0x0000000000050000UL
390#define PSYCHO_IOMMU_TSBSZ_64K 0x0000000000060000UL
391#define PSYCHO_IOMMU_TSBSZ_128K 0x0000000000070000UL
392#define PSYCHO_IOMMU_CTRL_TBWSZ 0x0000000000000004UL
393#define PSYCHO_IOMMU_CTRL_DENAB 0x0000000000000002UL
394#define PSYCHO_IOMMU_CTRL_ENAB 0x0000000000000001UL
395#define PSYCHO_IOMMU_FLUSH 0x0210UL
396#define PSYCHO_IOMMU_TSBBASE 0x0208UL
397
398int psycho_iommu_init(struct pci_pbm_info *pbm, int tsbsize,
399 u32 dvma_offset, u32 dma_mask,
400 unsigned long write_complete_offset)
401{
402 struct iommu *iommu = pbm->iommu;
403 u64 control;
404 int err;
405
406 iommu->iommu_control = pbm->controller_regs + PSYCHO_IOMMU_CONTROL;
407 iommu->iommu_tsbbase = pbm->controller_regs + PSYCHO_IOMMU_TSBBASE;
408 iommu->iommu_flush = pbm->controller_regs + PSYCHO_IOMMU_FLUSH;
409 iommu->iommu_tags = pbm->controller_regs + PSYCHO_IOMMU_TAG;
410 iommu->write_complete_reg = (pbm->controller_regs +
411 write_complete_offset);
412
413 iommu->iommu_ctxflush = 0;
414
415 control = upa_readq(iommu->iommu_control);
416 control |= PSYCHO_IOMMU_CTRL_DENAB;
417 upa_writeq(control, iommu->iommu_control);
418
419 psycho_iommu_flush(pbm);
420
421 /* Leave diag mode enabled for full-flushing done in pci_iommu.c */
422 err = iommu_table_init(iommu, tsbsize * 1024 * 8,
423 dvma_offset, dma_mask, pbm->numa_node);
424 if (err)
425 return err;
426
427 upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);
428
429 control = upa_readq(iommu->iommu_control);
430 control &= ~(PSYCHO_IOMMU_CTRL_TSBSZ | PSYCHO_IOMMU_CTRL_TBWSZ);
431 control |= PSYCHO_IOMMU_CTRL_ENAB;
432
433 switch (tsbsize) {
434 case 64:
435 control |= PSYCHO_IOMMU_TSBSZ_64K;
436 break;
437 case 128:
438 control |= PSYCHO_IOMMU_TSBSZ_128K;
439 break;
440 default:
441 return -EINVAL;
442 }
443
444 upa_writeq(control, iommu->iommu_control);
445
446 return 0;
447
448}
449
450void psycho_pbm_init_common(struct pci_pbm_info *pbm, struct of_device *op,
451 const char *chip_name, int chip_type)
452{
453 struct device_node *dp = op->node;
454
455 pbm->name = dp->full_name;
456 pbm->numa_node = -1;
457 pbm->chip_type = chip_type;
458 pbm->chip_version = of_getintprop_default(dp, "version#", 0);
459 pbm->chip_revision = of_getintprop_default(dp, "module-revision#", 0);
460 pbm->op = op;
461 pbm->pci_ops = &sun4u_pci_ops;
462 pbm->config_space_reg_bits = 8;
463 pbm->index = pci_num_pbms++;
464 pci_get_pbm_props(pbm);
465 pci_determine_mem_io_space(pbm);
466
467 printk(KERN_INFO "%s: %s PCI Bus Module ver[%x:%x]\n",
468 pbm->name, chip_name,
469 pbm->chip_version, pbm->chip_revision);
470}
diff --git a/arch/sparc/kernel/psycho_common.h b/arch/sparc/kernel/psycho_common.h
new file mode 100644
index 000000000000..092c278ef28d
--- /dev/null
+++ b/arch/sparc/kernel/psycho_common.h
@@ -0,0 +1,48 @@
1#ifndef _PSYCHO_COMMON_H
2#define _PSYCHO_COMMON_H
3
4/* U2P Programmer's Manual, page 13-55, configuration space
5 * address format:
6 *
7 * 32 24 23 16 15 11 10 8 7 2 1 0
8 * ---------------------------------------------------------
9 * |0 0 0 0 0 0 0 0 1| bus | device | function | reg | 0 0 |
10 * ---------------------------------------------------------
11 */
12#define PSYCHO_CONFIG_BASE(PBM) \
13 ((PBM)->config_space | (1UL << 24))
14#define PSYCHO_CONFIG_ENCODE(BUS, DEVFN, REG) \
15 (((unsigned long)(BUS) << 16) | \
16 ((unsigned long)(DEVFN) << 8) | \
17 ((unsigned long)(REG)))
18
19static inline void *psycho_pci_config_mkaddr(struct pci_pbm_info *pbm,
20 unsigned char bus,
21 unsigned int devfn,
22 int where)
23{
24 return (void *)
25 (PSYCHO_CONFIG_BASE(pbm) |
26 PSYCHO_CONFIG_ENCODE(bus, devfn, where));
27}
28
29enum psycho_error_type {
30 UE_ERR, CE_ERR, PCI_ERR
31};
32
33extern void psycho_check_iommu_error(struct pci_pbm_info *pbm,
34 unsigned long afsr,
35 unsigned long afar,
36 enum psycho_error_type type);
37
38extern irqreturn_t psycho_pcierr_intr(int irq, void *dev_id);
39
40extern int psycho_iommu_init(struct pci_pbm_info *pbm, int tsbsize,
41 u32 dvma_offset, u32 dma_mask,
42 unsigned long write_complete_offset);
43
44extern void psycho_pbm_init_common(struct pci_pbm_info *pbm,
45 struct of_device *op,
46 const char *chip_name, int chip_type);
47
48#endif /* _PSYCHO_COMMON_H */
diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
new file mode 100644
index 000000000000..a941c610e7ce
--- /dev/null
+++ b/arch/sparc/kernel/ptrace_64.c
@@ -0,0 +1,1090 @@
1/* ptrace.c: Sparc process tracing support.
2 *
3 * Copyright (C) 1996, 2008 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
5 *
6 * Based upon code written by Ross Biro, Linus Torvalds, Bob Manson,
7 * and David Mosberger.
8 *
9 * Added Linux support -miguel (weird, eh?, the original code was meant
10 * to emulate SunOS).
11 */
12
13#include <linux/kernel.h>
14#include <linux/sched.h>
15#include <linux/mm.h>
16#include <linux/errno.h>
17#include <linux/ptrace.h>
18#include <linux/user.h>
19#include <linux/smp.h>
20#include <linux/smp_lock.h>
21#include <linux/security.h>
22#include <linux/seccomp.h>
23#include <linux/audit.h>
24#include <linux/signal.h>
25#include <linux/regset.h>
26#include <linux/tracehook.h>
27#include <linux/compat.h>
28#include <linux/elf.h>
29
30#include <asm/asi.h>
31#include <asm/pgtable.h>
32#include <asm/system.h>
33#include <asm/uaccess.h>
34#include <asm/psrcompat.h>
35#include <asm/visasm.h>
36#include <asm/spitfire.h>
37#include <asm/page.h>
38#include <asm/cpudata.h>
39#include <asm/cacheflush.h>
40
41#include "entry.h"
42
43/* #define ALLOW_INIT_TRACING */
44
45/*
46 * Called by kernel/ptrace.c when detaching..
47 *
48 * Make sure single step bits etc are not set.
49 */
50void ptrace_disable(struct task_struct *child)
51{
52 /* nothing to do */
53}
54
55/* To get the necessary page struct, access_process_vm() first calls
56 * get_user_pages(). This has done a flush_dcache_page() on the
57 * accessed page. Then our caller (copy_{to,from}_user_page()) did
58 * to memcpy to read/write the data from that page.
59 *
60 * Now, the only thing we have to do is:
61 * 1) flush the D-cache if it's possible than an illegal alias
62 * has been created
63 * 2) flush the I-cache if this is pre-cheetah and we did a write
64 */
65void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
66 unsigned long uaddr, void *kaddr,
67 unsigned long len, int write)
68{
69 BUG_ON(len > PAGE_SIZE);
70
71 if (tlb_type == hypervisor)
72 return;
73
74 preempt_disable();
75
76#ifdef DCACHE_ALIASING_POSSIBLE
77 /* If bit 13 of the kernel address we used to access the
78 * user page is the same as the virtual address that page
79 * is mapped to in the user's address space, we can skip the
80 * D-cache flush.
81 */
82 if ((uaddr ^ (unsigned long) kaddr) & (1UL << 13)) {
83 unsigned long start = __pa(kaddr);
84 unsigned long end = start + len;
85 unsigned long dcache_line_size;
86
87 dcache_line_size = local_cpu_data().dcache_line_size;
88
89 if (tlb_type == spitfire) {
90 for (; start < end; start += dcache_line_size)
91 spitfire_put_dcache_tag(start & 0x3fe0, 0x0);
92 } else {
93 start &= ~(dcache_line_size - 1);
94 for (; start < end; start += dcache_line_size)
95 __asm__ __volatile__(
96 "stxa %%g0, [%0] %1\n\t"
97 "membar #Sync"
98 : /* no outputs */
99 : "r" (start),
100 "i" (ASI_DCACHE_INVALIDATE));
101 }
102 }
103#endif
104 if (write && tlb_type == spitfire) {
105 unsigned long start = (unsigned long) kaddr;
106 unsigned long end = start + len;
107 unsigned long icache_line_size;
108
109 icache_line_size = local_cpu_data().icache_line_size;
110
111 for (; start < end; start += icache_line_size)
112 flushi(start);
113 }
114
115 preempt_enable();
116}
117
118static int get_from_target(struct task_struct *target, unsigned long uaddr,
119 void *kbuf, int len)
120{
121 if (target == current) {
122 if (copy_from_user(kbuf, (void __user *) uaddr, len))
123 return -EFAULT;
124 } else {
125 int len2 = access_process_vm(target, uaddr, kbuf, len, 0);
126 if (len2 != len)
127 return -EFAULT;
128 }
129 return 0;
130}
131
132static int set_to_target(struct task_struct *target, unsigned long uaddr,
133 void *kbuf, int len)
134{
135 if (target == current) {
136 if (copy_to_user((void __user *) uaddr, kbuf, len))
137 return -EFAULT;
138 } else {
139 int len2 = access_process_vm(target, uaddr, kbuf, len, 1);
140 if (len2 != len)
141 return -EFAULT;
142 }
143 return 0;
144}
145
146static int regwindow64_get(struct task_struct *target,
147 const struct pt_regs *regs,
148 struct reg_window *wbuf)
149{
150 unsigned long rw_addr = regs->u_regs[UREG_I6];
151
152 if (test_tsk_thread_flag(current, TIF_32BIT)) {
153 struct reg_window32 win32;
154 int i;
155
156 if (get_from_target(target, rw_addr, &win32, sizeof(win32)))
157 return -EFAULT;
158 for (i = 0; i < 8; i++)
159 wbuf->locals[i] = win32.locals[i];
160 for (i = 0; i < 8; i++)
161 wbuf->ins[i] = win32.ins[i];
162 } else {
163 rw_addr += STACK_BIAS;
164 if (get_from_target(target, rw_addr, wbuf, sizeof(*wbuf)))
165 return -EFAULT;
166 }
167
168 return 0;
169}
170
171static int regwindow64_set(struct task_struct *target,
172 const struct pt_regs *regs,
173 struct reg_window *wbuf)
174{
175 unsigned long rw_addr = regs->u_regs[UREG_I6];
176
177 if (test_tsk_thread_flag(current, TIF_32BIT)) {
178 struct reg_window32 win32;
179 int i;
180
181 for (i = 0; i < 8; i++)
182 win32.locals[i] = wbuf->locals[i];
183 for (i = 0; i < 8; i++)
184 win32.ins[i] = wbuf->ins[i];
185
186 if (set_to_target(target, rw_addr, &win32, sizeof(win32)))
187 return -EFAULT;
188 } else {
189 rw_addr += STACK_BIAS;
190 if (set_to_target(target, rw_addr, wbuf, sizeof(*wbuf)))
191 return -EFAULT;
192 }
193
194 return 0;
195}
196
197enum sparc_regset {
198 REGSET_GENERAL,
199 REGSET_FP,
200};
201
202static int genregs64_get(struct task_struct *target,
203 const struct user_regset *regset,
204 unsigned int pos, unsigned int count,
205 void *kbuf, void __user *ubuf)
206{
207 const struct pt_regs *regs = task_pt_regs(target);
208 int ret;
209
210 if (target == current)
211 flushw_user();
212
213 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
214 regs->u_regs,
215 0, 16 * sizeof(u64));
216 if (!ret && count && pos < (32 * sizeof(u64))) {
217 struct reg_window window;
218
219 if (regwindow64_get(target, regs, &window))
220 return -EFAULT;
221 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
222 &window,
223 16 * sizeof(u64),
224 32 * sizeof(u64));
225 }
226
227 if (!ret) {
228 /* TSTATE, TPC, TNPC */
229 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
230 &regs->tstate,
231 32 * sizeof(u64),
232 35 * sizeof(u64));
233 }
234
235 if (!ret) {
236 unsigned long y = regs->y;
237
238 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
239 &y,
240 35 * sizeof(u64),
241 36 * sizeof(u64));
242 }
243
244 if (!ret) {
245 ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
246 36 * sizeof(u64), -1);
247
248 }
249 return ret;
250}
251
252static int genregs64_set(struct task_struct *target,
253 const struct user_regset *regset,
254 unsigned int pos, unsigned int count,
255 const void *kbuf, const void __user *ubuf)
256{
257 struct pt_regs *regs = task_pt_regs(target);
258 int ret;
259
260 if (target == current)
261 flushw_user();
262
263 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
264 regs->u_regs,
265 0, 16 * sizeof(u64));
266 if (!ret && count && pos < (32 * sizeof(u64))) {
267 struct reg_window window;
268
269 if (regwindow64_get(target, regs, &window))
270 return -EFAULT;
271
272 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
273 &window,
274 16 * sizeof(u64),
275 32 * sizeof(u64));
276
277 if (!ret &&
278 regwindow64_set(target, regs, &window))
279 return -EFAULT;
280 }
281
282 if (!ret && count > 0) {
283 unsigned long tstate;
284
285 /* TSTATE */
286 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
287 &tstate,
288 32 * sizeof(u64),
289 33 * sizeof(u64));
290 if (!ret) {
291 /* Only the condition codes and the "in syscall"
292 * state can be modified in the %tstate register.
293 */
294 tstate &= (TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
295 regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
296 regs->tstate |= tstate;
297 }
298 }
299
300 if (!ret) {
301 /* TPC, TNPC */
302 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
303 &regs->tpc,
304 33 * sizeof(u64),
305 35 * sizeof(u64));
306 }
307
308 if (!ret) {
309 unsigned long y;
310
311 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
312 &y,
313 35 * sizeof(u64),
314 36 * sizeof(u64));
315 if (!ret)
316 regs->y = y;
317 }
318
319 if (!ret)
320 ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
321 36 * sizeof(u64), -1);
322
323 return ret;
324}
325
326static int fpregs64_get(struct task_struct *target,
327 const struct user_regset *regset,
328 unsigned int pos, unsigned int count,
329 void *kbuf, void __user *ubuf)
330{
331 const unsigned long *fpregs = task_thread_info(target)->fpregs;
332 unsigned long fprs, fsr, gsr;
333 int ret;
334
335 if (target == current)
336 save_and_clear_fpu();
337
338 fprs = task_thread_info(target)->fpsaved[0];
339
340 if (fprs & FPRS_DL)
341 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
342 fpregs,
343 0, 16 * sizeof(u64));
344 else
345 ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
346 0,
347 16 * sizeof(u64));
348
349 if (!ret) {
350 if (fprs & FPRS_DU)
351 ret = user_regset_copyout(&pos, &count,
352 &kbuf, &ubuf,
353 fpregs + 16,
354 16 * sizeof(u64),
355 32 * sizeof(u64));
356 else
357 ret = user_regset_copyout_zero(&pos, &count,
358 &kbuf, &ubuf,
359 16 * sizeof(u64),
360 32 * sizeof(u64));
361 }
362
363 if (fprs & FPRS_FEF) {
364 fsr = task_thread_info(target)->xfsr[0];
365 gsr = task_thread_info(target)->gsr[0];
366 } else {
367 fsr = gsr = 0;
368 }
369
370 if (!ret)
371 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
372 &fsr,
373 32 * sizeof(u64),
374 33 * sizeof(u64));
375 if (!ret)
376 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
377 &gsr,
378 33 * sizeof(u64),
379 34 * sizeof(u64));
380 if (!ret)
381 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
382 &fprs,
383 34 * sizeof(u64),
384 35 * sizeof(u64));
385
386 if (!ret)
387 ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
388 35 * sizeof(u64), -1);
389
390 return ret;
391}
392
393static int fpregs64_set(struct task_struct *target,
394 const struct user_regset *regset,
395 unsigned int pos, unsigned int count,
396 const void *kbuf, const void __user *ubuf)
397{
398 unsigned long *fpregs = task_thread_info(target)->fpregs;
399 unsigned long fprs;
400 int ret;
401
402 if (target == current)
403 save_and_clear_fpu();
404
405 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
406 fpregs,
407 0, 32 * sizeof(u64));
408 if (!ret)
409 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
410 task_thread_info(target)->xfsr,
411 32 * sizeof(u64),
412 33 * sizeof(u64));
413 if (!ret)
414 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
415 task_thread_info(target)->gsr,
416 33 * sizeof(u64),
417 34 * sizeof(u64));
418
419 fprs = task_thread_info(target)->fpsaved[0];
420 if (!ret && count > 0) {
421 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
422 &fprs,
423 34 * sizeof(u64),
424 35 * sizeof(u64));
425 }
426
427 fprs |= (FPRS_FEF | FPRS_DL | FPRS_DU);
428 task_thread_info(target)->fpsaved[0] = fprs;
429
430 if (!ret)
431 ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
432 35 * sizeof(u64), -1);
433 return ret;
434}
435
436static const struct user_regset sparc64_regsets[] = {
437 /* Format is:
438 * G0 --> G7
439 * O0 --> O7
440 * L0 --> L7
441 * I0 --> I7
442 * TSTATE, TPC, TNPC, Y
443 */
444 [REGSET_GENERAL] = {
445 .core_note_type = NT_PRSTATUS,
446 .n = 36,
447 .size = sizeof(u64), .align = sizeof(u64),
448 .get = genregs64_get, .set = genregs64_set
449 },
450 /* Format is:
451 * F0 --> F63
452 * FSR
453 * GSR
454 * FPRS
455 */
456 [REGSET_FP] = {
457 .core_note_type = NT_PRFPREG,
458 .n = 35,
459 .size = sizeof(u64), .align = sizeof(u64),
460 .get = fpregs64_get, .set = fpregs64_set
461 },
462};
463
464static const struct user_regset_view user_sparc64_view = {
465 .name = "sparc64", .e_machine = EM_SPARCV9,
466 .regsets = sparc64_regsets, .n = ARRAY_SIZE(sparc64_regsets)
467};
468
469#ifdef CONFIG_COMPAT
470static int genregs32_get(struct task_struct *target,
471 const struct user_regset *regset,
472 unsigned int pos, unsigned int count,
473 void *kbuf, void __user *ubuf)
474{
475 const struct pt_regs *regs = task_pt_regs(target);
476 compat_ulong_t __user *reg_window;
477 compat_ulong_t *k = kbuf;
478 compat_ulong_t __user *u = ubuf;
479 compat_ulong_t reg;
480
481 if (target == current)
482 flushw_user();
483
484 pos /= sizeof(reg);
485 count /= sizeof(reg);
486
487 if (kbuf) {
488 for (; count > 0 && pos < 16; count--)
489 *k++ = regs->u_regs[pos++];
490
491 reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
492 if (target == current) {
493 for (; count > 0 && pos < 32; count--) {
494 if (get_user(*k++, &reg_window[pos++]))
495 return -EFAULT;
496 }
497 } else {
498 for (; count > 0 && pos < 32; count--) {
499 if (access_process_vm(target,
500 (unsigned long)
501 &reg_window[pos],
502 k, sizeof(*k), 0)
503 != sizeof(*k))
504 return -EFAULT;
505 k++;
506 pos++;
507 }
508 }
509 } else {
510 for (; count > 0 && pos < 16; count--) {
511 if (put_user((compat_ulong_t) regs->u_regs[pos++], u++))
512 return -EFAULT;
513 }
514
515 reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
516 if (target == current) {
517 for (; count > 0 && pos < 32; count--) {
518 if (get_user(reg, &reg_window[pos++]) ||
519 put_user(reg, u++))
520 return -EFAULT;
521 }
522 } else {
523 for (; count > 0 && pos < 32; count--) {
524 if (access_process_vm(target,
525 (unsigned long)
526 &reg_window[pos],
527 &reg, sizeof(reg), 0)
528 != sizeof(reg))
529 return -EFAULT;
530 if (access_process_vm(target,
531 (unsigned long) u,
532 &reg, sizeof(reg), 1)
533 != sizeof(reg))
534 return -EFAULT;
535 pos++;
536 u++;
537 }
538 }
539 }
540 while (count > 0) {
541 switch (pos) {
542 case 32: /* PSR */
543 reg = tstate_to_psr(regs->tstate);
544 break;
545 case 33: /* PC */
546 reg = regs->tpc;
547 break;
548 case 34: /* NPC */
549 reg = regs->tnpc;
550 break;
551 case 35: /* Y */
552 reg = regs->y;
553 break;
554 case 36: /* WIM */
555 case 37: /* TBR */
556 reg = 0;
557 break;
558 default:
559 goto finish;
560 }
561
562 if (kbuf)
563 *k++ = reg;
564 else if (put_user(reg, u++))
565 return -EFAULT;
566 pos++;
567 count--;
568 }
569finish:
570 pos *= sizeof(reg);
571 count *= sizeof(reg);
572
573 return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
574 38 * sizeof(reg), -1);
575}
576
577static int genregs32_set(struct task_struct *target,
578 const struct user_regset *regset,
579 unsigned int pos, unsigned int count,
580 const void *kbuf, const void __user *ubuf)
581{
582 struct pt_regs *regs = task_pt_regs(target);
583 compat_ulong_t __user *reg_window;
584 const compat_ulong_t *k = kbuf;
585 const compat_ulong_t __user *u = ubuf;
586 compat_ulong_t reg;
587
588 if (target == current)
589 flushw_user();
590
591 pos /= sizeof(reg);
592 count /= sizeof(reg);
593
594 if (kbuf) {
595 for (; count > 0 && pos < 16; count--)
596 regs->u_regs[pos++] = *k++;
597
598 reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
599 if (target == current) {
600 for (; count > 0 && pos < 32; count--) {
601 if (put_user(*k++, &reg_window[pos++]))
602 return -EFAULT;
603 }
604 } else {
605 for (; count > 0 && pos < 32; count--) {
606 if (access_process_vm(target,
607 (unsigned long)
608 &reg_window[pos],
609 (void *) k,
610 sizeof(*k), 1)
611 != sizeof(*k))
612 return -EFAULT;
613 k++;
614 pos++;
615 }
616 }
617 } else {
618 for (; count > 0 && pos < 16; count--) {
619 if (get_user(reg, u++))
620 return -EFAULT;
621 regs->u_regs[pos++] = reg;
622 }
623
624 reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
625 if (target == current) {
626 for (; count > 0 && pos < 32; count--) {
627 if (get_user(reg, u++) ||
628 put_user(reg, &reg_window[pos++]))
629 return -EFAULT;
630 }
631 } else {
632 for (; count > 0 && pos < 32; count--) {
633 if (access_process_vm(target,
634 (unsigned long)
635 u,
636 &reg, sizeof(reg), 0)
637 != sizeof(reg))
638 return -EFAULT;
639 if (access_process_vm(target,
640 (unsigned long)
641 &reg_window[pos],
642 &reg, sizeof(reg), 1)
643 != sizeof(reg))
644 return -EFAULT;
645 pos++;
646 u++;
647 }
648 }
649 }
650 while (count > 0) {
651 unsigned long tstate;
652
653 if (kbuf)
654 reg = *k++;
655 else if (get_user(reg, u++))
656 return -EFAULT;
657
658 switch (pos) {
659 case 32: /* PSR */
660 tstate = regs->tstate;
661 tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
662 tstate |= psr_to_tstate_icc(reg);
663 if (reg & PSR_SYSCALL)
664 tstate |= TSTATE_SYSCALL;
665 regs->tstate = tstate;
666 break;
667 case 33: /* PC */
668 regs->tpc = reg;
669 break;
670 case 34: /* NPC */
671 regs->tnpc = reg;
672 break;
673 case 35: /* Y */
674 regs->y = reg;
675 break;
676 case 36: /* WIM */
677 case 37: /* TBR */
678 break;
679 default:
680 goto finish;
681 }
682
683 pos++;
684 count--;
685 }
686finish:
687 pos *= sizeof(reg);
688 count *= sizeof(reg);
689
690 return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
691 38 * sizeof(reg), -1);
692}
693
694static int fpregs32_get(struct task_struct *target,
695 const struct user_regset *regset,
696 unsigned int pos, unsigned int count,
697 void *kbuf, void __user *ubuf)
698{
699 const unsigned long *fpregs = task_thread_info(target)->fpregs;
700 compat_ulong_t enabled;
701 unsigned long fprs;
702 compat_ulong_t fsr;
703 int ret = 0;
704
705 if (target == current)
706 save_and_clear_fpu();
707
708 fprs = task_thread_info(target)->fpsaved[0];
709 if (fprs & FPRS_FEF) {
710 fsr = task_thread_info(target)->xfsr[0];
711 enabled = 1;
712 } else {
713 fsr = 0;
714 enabled = 0;
715 }
716
717 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
718 fpregs,
719 0, 32 * sizeof(u32));
720
721 if (!ret)
722 ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
723 32 * sizeof(u32),
724 33 * sizeof(u32));
725 if (!ret)
726 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
727 &fsr,
728 33 * sizeof(u32),
729 34 * sizeof(u32));
730
731 if (!ret) {
732 compat_ulong_t val;
733
734 val = (enabled << 8) | (8 << 16);
735 ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
736 &val,
737 34 * sizeof(u32),
738 35 * sizeof(u32));
739 }
740
741 if (!ret)
742 ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
743 35 * sizeof(u32), -1);
744
745 return ret;
746}
747
748static int fpregs32_set(struct task_struct *target,
749 const struct user_regset *regset,
750 unsigned int pos, unsigned int count,
751 const void *kbuf, const void __user *ubuf)
752{
753 unsigned long *fpregs = task_thread_info(target)->fpregs;
754 unsigned long fprs;
755 int ret;
756
757 if (target == current)
758 save_and_clear_fpu();
759
760 fprs = task_thread_info(target)->fpsaved[0];
761
762 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
763 fpregs,
764 0, 32 * sizeof(u32));
765 if (!ret)
766 user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
767 32 * sizeof(u32),
768 33 * sizeof(u32));
769 if (!ret && count > 0) {
770 compat_ulong_t fsr;
771 unsigned long val;
772
773 ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
774 &fsr,
775 33 * sizeof(u32),
776 34 * sizeof(u32));
777 if (!ret) {
778 val = task_thread_info(target)->xfsr[0];
779 val &= 0xffffffff00000000UL;
780 val |= fsr;
781 task_thread_info(target)->xfsr[0] = val;
782 }
783 }
784
785 fprs |= (FPRS_FEF | FPRS_DL);
786 task_thread_info(target)->fpsaved[0] = fprs;
787
788 if (!ret)
789 ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
790 34 * sizeof(u32), -1);
791 return ret;
792}
793
794static const struct user_regset sparc32_regsets[] = {
795 /* Format is:
796 * G0 --> G7
797 * O0 --> O7
798 * L0 --> L7
799 * I0 --> I7
800 * PSR, PC, nPC, Y, WIM, TBR
801 */
802 [REGSET_GENERAL] = {
803 .core_note_type = NT_PRSTATUS,
804 .n = 38,
805 .size = sizeof(u32), .align = sizeof(u32),
806 .get = genregs32_get, .set = genregs32_set
807 },
808 /* Format is:
809 * F0 --> F31
810 * empty 32-bit word
811 * FSR (32--bit word)
812 * FPU QUEUE COUNT (8-bit char)
813 * FPU QUEUE ENTRYSIZE (8-bit char)
814 * FPU ENABLED (8-bit char)
815 * empty 8-bit char
816 * FPU QUEUE (64 32-bit ints)
817 */
818 [REGSET_FP] = {
819 .core_note_type = NT_PRFPREG,
820 .n = 99,
821 .size = sizeof(u32), .align = sizeof(u32),
822 .get = fpregs32_get, .set = fpregs32_set
823 },
824};
825
826static const struct user_regset_view user_sparc32_view = {
827 .name = "sparc", .e_machine = EM_SPARC,
828 .regsets = sparc32_regsets, .n = ARRAY_SIZE(sparc32_regsets)
829};
830#endif /* CONFIG_COMPAT */
831
832const struct user_regset_view *task_user_regset_view(struct task_struct *task)
833{
834#ifdef CONFIG_COMPAT
835 if (test_tsk_thread_flag(task, TIF_32BIT))
836 return &user_sparc32_view;
837#endif
838 return &user_sparc64_view;
839}
840
841#ifdef CONFIG_COMPAT
842struct compat_fps {
843 unsigned int regs[32];
844 unsigned int fsr;
845 unsigned int flags;
846 unsigned int extra;
847 unsigned int fpqd;
848 struct compat_fq {
849 unsigned int insnaddr;
850 unsigned int insn;
851 } fpq[16];
852};
853
854long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
855 compat_ulong_t caddr, compat_ulong_t cdata)
856{
857 const struct user_regset_view *view = task_user_regset_view(current);
858 compat_ulong_t caddr2 = task_pt_regs(current)->u_regs[UREG_I4];
859 struct pt_regs32 __user *pregs;
860 struct compat_fps __user *fps;
861 unsigned long addr2 = caddr2;
862 unsigned long addr = caddr;
863 unsigned long data = cdata;
864 int ret;
865
866 pregs = (struct pt_regs32 __user *) addr;
867 fps = (struct compat_fps __user *) addr;
868
869 switch (request) {
870 case PTRACE_PEEKUSR:
871 ret = (addr != 0) ? -EIO : 0;
872 break;
873
874 case PTRACE_GETREGS:
875 ret = copy_regset_to_user(child, view, REGSET_GENERAL,
876 32 * sizeof(u32),
877 4 * sizeof(u32),
878 &pregs->psr);
879 if (!ret)
880 ret = copy_regset_to_user(child, view, REGSET_GENERAL,
881 1 * sizeof(u32),
882 15 * sizeof(u32),
883 &pregs->u_regs[0]);
884 break;
885
886 case PTRACE_SETREGS:
887 ret = copy_regset_from_user(child, view, REGSET_GENERAL,
888 32 * sizeof(u32),
889 4 * sizeof(u32),
890 &pregs->psr);
891 if (!ret)
892 ret = copy_regset_from_user(child, view, REGSET_GENERAL,
893 1 * sizeof(u32),
894 15 * sizeof(u32),
895 &pregs->u_regs[0]);
896 break;
897
898 case PTRACE_GETFPREGS:
899 ret = copy_regset_to_user(child, view, REGSET_FP,
900 0 * sizeof(u32),
901 32 * sizeof(u32),
902 &fps->regs[0]);
903 if (!ret)
904 ret = copy_regset_to_user(child, view, REGSET_FP,
905 33 * sizeof(u32),
906 1 * sizeof(u32),
907 &fps->fsr);
908 if (!ret) {
909 if (__put_user(0, &fps->flags) ||
910 __put_user(0, &fps->extra) ||
911 __put_user(0, &fps->fpqd) ||
912 clear_user(&fps->fpq[0], 32 * sizeof(unsigned int)))
913 ret = -EFAULT;
914 }
915 break;
916
917 case PTRACE_SETFPREGS:
918 ret = copy_regset_from_user(child, view, REGSET_FP,
919 0 * sizeof(u32),
920 32 * sizeof(u32),
921 &fps->regs[0]);
922 if (!ret)
923 ret = copy_regset_from_user(child, view, REGSET_FP,
924 33 * sizeof(u32),
925 1 * sizeof(u32),
926 &fps->fsr);
927 break;
928
929 case PTRACE_READTEXT:
930 case PTRACE_READDATA:
931 ret = ptrace_readdata(child, addr,
932 (char __user *)addr2, data);
933 if (ret == data)
934 ret = 0;
935 else if (ret >= 0)
936 ret = -EIO;
937 break;
938
939 case PTRACE_WRITETEXT:
940 case PTRACE_WRITEDATA:
941 ret = ptrace_writedata(child, (char __user *) addr2,
942 addr, data);
943 if (ret == data)
944 ret = 0;
945 else if (ret >= 0)
946 ret = -EIO;
947 break;
948
949 default:
950 if (request == PTRACE_SPARC_DETACH)
951 request = PTRACE_DETACH;
952 ret = compat_ptrace_request(child, request, addr, data);
953 break;
954 }
955
956 return ret;
957}
958#endif /* CONFIG_COMPAT */
959
960struct fps {
961 unsigned int regs[64];
962 unsigned long fsr;
963};
964
965long arch_ptrace(struct task_struct *child, long request, long addr, long data)
966{
967 const struct user_regset_view *view = task_user_regset_view(current);
968 unsigned long addr2 = task_pt_regs(current)->u_regs[UREG_I4];
969 struct pt_regs __user *pregs;
970 struct fps __user *fps;
971 int ret;
972
973 pregs = (struct pt_regs __user *) (unsigned long) addr;
974 fps = (struct fps __user *) (unsigned long) addr;
975
976 switch (request) {
977 case PTRACE_PEEKUSR:
978 ret = (addr != 0) ? -EIO : 0;
979 break;
980
981 case PTRACE_GETREGS64:
982 ret = copy_regset_to_user(child, view, REGSET_GENERAL,
983 1 * sizeof(u64),
984 15 * sizeof(u64),
985 &pregs->u_regs[0]);
986 if (!ret) {
987 /* XXX doesn't handle 'y' register correctly XXX */
988 ret = copy_regset_to_user(child, view, REGSET_GENERAL,
989 32 * sizeof(u64),
990 4 * sizeof(u64),
991 &pregs->tstate);
992 }
993 break;
994
995 case PTRACE_SETREGS64:
996 ret = copy_regset_from_user(child, view, REGSET_GENERAL,
997 1 * sizeof(u64),
998 15 * sizeof(u64),
999 &pregs->u_regs[0]);
1000 if (!ret) {
1001 /* XXX doesn't handle 'y' register correctly XXX */
1002 ret = copy_regset_from_user(child, view, REGSET_GENERAL,
1003 32 * sizeof(u64),
1004 4 * sizeof(u64),
1005 &pregs->tstate);
1006 }
1007 break;
1008
1009 case PTRACE_GETFPREGS64:
1010 ret = copy_regset_to_user(child, view, REGSET_FP,
1011 0 * sizeof(u64),
1012 33 * sizeof(u64),
1013 fps);
1014 break;
1015
1016 case PTRACE_SETFPREGS64:
1017 ret = copy_regset_from_user(child, view, REGSET_FP,
1018 0 * sizeof(u64),
1019 33 * sizeof(u64),
1020 fps);
1021 break;
1022
1023 case PTRACE_READTEXT:
1024 case PTRACE_READDATA:
1025 ret = ptrace_readdata(child, addr,
1026 (char __user *)addr2, data);
1027 if (ret == data)
1028 ret = 0;
1029 else if (ret >= 0)
1030 ret = -EIO;
1031 break;
1032
1033 case PTRACE_WRITETEXT:
1034 case PTRACE_WRITEDATA:
1035 ret = ptrace_writedata(child, (char __user *) addr2,
1036 addr, data);
1037 if (ret == data)
1038 ret = 0;
1039 else if (ret >= 0)
1040 ret = -EIO;
1041 break;
1042
1043 default:
1044 if (request == PTRACE_SPARC_DETACH)
1045 request = PTRACE_DETACH;
1046 ret = ptrace_request(child, request, addr, data);
1047 break;
1048 }
1049
1050 return ret;
1051}
1052
1053asmlinkage int syscall_trace_enter(struct pt_regs *regs)
1054{
1055 int ret = 0;
1056
1057 /* do the secure computing check first */
1058 secure_computing(regs->u_regs[UREG_G1]);
1059
1060 if (test_thread_flag(TIF_SYSCALL_TRACE))
1061 ret = tracehook_report_syscall_entry(regs);
1062
1063 if (unlikely(current->audit_context) && !ret)
1064 audit_syscall_entry((test_thread_flag(TIF_32BIT) ?
1065 AUDIT_ARCH_SPARC :
1066 AUDIT_ARCH_SPARC64),
1067 regs->u_regs[UREG_G1],
1068 regs->u_regs[UREG_I0],
1069 regs->u_regs[UREG_I1],
1070 regs->u_regs[UREG_I2],
1071 regs->u_regs[UREG_I3]);
1072
1073 return ret;
1074}
1075
1076asmlinkage void syscall_trace_leave(struct pt_regs *regs)
1077{
1078 if (unlikely(current->audit_context)) {
1079 unsigned long tstate = regs->tstate;
1080 int result = AUDITSC_SUCCESS;
1081
1082 if (unlikely(tstate & (TSTATE_XCARRY | TSTATE_ICARRY)))
1083 result = AUDITSC_FAILURE;
1084
1085 audit_syscall_exit(result, regs->u_regs[UREG_I0]);
1086 }
1087
1088 if (test_thread_flag(TIF_SYSCALL_TRACE))
1089 tracehook_report_syscall_exit(regs, 0);
1090}
diff --git a/arch/sparc/kernel/reboot.c b/arch/sparc/kernel/reboot.c
new file mode 100644
index 000000000000..ef89d3d69748
--- /dev/null
+++ b/arch/sparc/kernel/reboot.c
@@ -0,0 +1,53 @@
1/* reboot.c: reboot/shutdown/halt/poweroff handling
2 *
3 * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
4 */
5#include <linux/kernel.h>
6#include <linux/reboot.h>
7#include <linux/module.h>
8#include <linux/pm.h>
9
10#include <asm/system.h>
11#include <asm/oplib.h>
12#include <asm/prom.h>
13
14/* sysctl - toggle power-off restriction for serial console
15 * systems in machine_power_off()
16 */
17int scons_pwroff = 1;
18
19/* This isn't actually used, it exists merely to satisfy the
20 * reference in kernel/sys.c
21 */
22void (*pm_power_off)(void) = machine_power_off;
23EXPORT_SYMBOL(pm_power_off);
24
25void machine_power_off(void)
26{
27 if (strcmp(of_console_device->type, "serial") || scons_pwroff)
28 prom_halt_power_off();
29
30 prom_halt();
31}
32
33void machine_halt(void)
34{
35 prom_halt();
36 panic("Halt failed!");
37}
38
39void machine_restart(char *cmd)
40{
41 char *p;
42
43 p = strchr(reboot_command, '\n');
44 if (p)
45 *p = 0;
46 if (cmd)
47 prom_reboot(cmd);
48 if (*reboot_command)
49 prom_reboot(reboot_command);
50 prom_reboot("");
51 panic("Reboot failed!");
52}
53
diff --git a/arch/sparc/kernel/rtrap_64.S b/arch/sparc/kernel/rtrap_64.S
new file mode 100644
index 000000000000..fd3cee4d117c
--- /dev/null
+++ b/arch/sparc/kernel/rtrap_64.S
@@ -0,0 +1,450 @@
1/*
2 * rtrap.S: Preparing for return from trap on Sparc V9.
3 *
4 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
5 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
6 */
7
8
9#include <asm/asi.h>
10#include <asm/pstate.h>
11#include <asm/ptrace.h>
12#include <asm/spitfire.h>
13#include <asm/head.h>
14#include <asm/visasm.h>
15#include <asm/processor.h>
16
17#define RTRAP_PSTATE (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_IE)
18#define RTRAP_PSTATE_IRQOFF (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV)
19#define RTRAP_PSTATE_AG_IRQOFF (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_AG)
20
21 .text
22 .align 32
23__handle_softirq:
24 call do_softirq
25 nop
26 ba,a,pt %xcc, __handle_softirq_continue
27 nop
28__handle_preemption:
29 call schedule
30 wrpr %g0, RTRAP_PSTATE, %pstate
31 ba,pt %xcc, __handle_preemption_continue
32 wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
33
34__handle_user_windows:
35 call fault_in_user_windows
36 wrpr %g0, RTRAP_PSTATE, %pstate
37 wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
38 /* Redo sched+sig checks */
39 ldx [%g6 + TI_FLAGS], %l0
40 andcc %l0, _TIF_NEED_RESCHED, %g0
41
42 be,pt %xcc, 1f
43 nop
44 call schedule
45 wrpr %g0, RTRAP_PSTATE, %pstate
46 wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
47 ldx [%g6 + TI_FLAGS], %l0
48
491: andcc %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
50 be,pt %xcc, __handle_user_windows_continue
51 nop
52 mov %l5, %o1
53 add %sp, PTREGS_OFF, %o0
54 mov %l0, %o2
55
56 call do_notify_resume
57 wrpr %g0, RTRAP_PSTATE, %pstate
58 wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
59 /* Signal delivery can modify pt_regs tstate, so we must
60 * reload it.
61 */
62 ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
63 sethi %hi(0xf << 20), %l4
64 and %l1, %l4, %l4
65 ba,pt %xcc, __handle_user_windows_continue
66
67 andn %l1, %l4, %l1
68__handle_perfctrs:
69 call update_perfctrs
70 wrpr %g0, RTRAP_PSTATE, %pstate
71 wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
72 ldub [%g6 + TI_WSAVED], %o2
73 brz,pt %o2, 1f
74 nop
75 /* Redo userwin+sched+sig checks */
76 call fault_in_user_windows
77
78 wrpr %g0, RTRAP_PSTATE, %pstate
79 wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
80 ldx [%g6 + TI_FLAGS], %l0
81 andcc %l0, _TIF_NEED_RESCHED, %g0
82 be,pt %xcc, 1f
83
84 nop
85 call schedule
86 wrpr %g0, RTRAP_PSTATE, %pstate
87 wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
88 ldx [%g6 + TI_FLAGS], %l0
891: andcc %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
90
91 be,pt %xcc, __handle_perfctrs_continue
92 sethi %hi(TSTATE_PEF), %o0
93 mov %l5, %o1
94 add %sp, PTREGS_OFF, %o0
95 mov %l0, %o2
96 call do_notify_resume
97
98 wrpr %g0, RTRAP_PSTATE, %pstate
99 wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
100 /* Signal delivery can modify pt_regs tstate, so we must
101 * reload it.
102 */
103 ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
104 sethi %hi(0xf << 20), %l4
105 and %l1, %l4, %l4
106 andn %l1, %l4, %l1
107 ba,pt %xcc, __handle_perfctrs_continue
108
109 sethi %hi(TSTATE_PEF), %o0
110__handle_userfpu:
111 rd %fprs, %l5
112 andcc %l5, FPRS_FEF, %g0
113 sethi %hi(TSTATE_PEF), %o0
114 be,a,pn %icc, __handle_userfpu_continue
115 andn %l1, %o0, %l1
116 ba,a,pt %xcc, __handle_userfpu_continue
117
118__handle_signal:
119 mov %l5, %o1
120 add %sp, PTREGS_OFF, %o0
121 mov %l0, %o2
122 call do_notify_resume
123 wrpr %g0, RTRAP_PSTATE, %pstate
124 wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
125
126 /* Signal delivery can modify pt_regs tstate, so we must
127 * reload it.
128 */
129 ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
130 sethi %hi(0xf << 20), %l4
131 and %l1, %l4, %l4
132 ba,pt %xcc, __handle_signal_continue
133 andn %l1, %l4, %l1
134
135 /* When returning from a NMI (%pil==15) interrupt we want to
136 * avoid running softirqs, doing IRQ tracing, preempting, etc.
137 */
138 .globl rtrap_nmi
139rtrap_nmi: ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
140 sethi %hi(0xf << 20), %l4
141 and %l1, %l4, %l4
142 andn %l1, %l4, %l1
143 srl %l4, 20, %l4
144 ba,pt %xcc, rtrap_no_irq_enable
145 wrpr %l4, %pil
146
147 .align 64
148 .globl rtrap_irq, rtrap, irqsz_patchme, rtrap_xcall
149rtrap_irq:
150rtrap:
151#ifndef CONFIG_SMP
152 sethi %hi(per_cpu____cpu_data), %l0
153 lduw [%l0 + %lo(per_cpu____cpu_data)], %l1
154#else
155 sethi %hi(per_cpu____cpu_data), %l0
156 or %l0, %lo(per_cpu____cpu_data), %l0
157 lduw [%l0 + %g5], %l1
158#endif
159 cmp %l1, 0
160
161 /* mm/ultra.S:xcall_report_regs KNOWS about this load. */
162 bne,pn %icc, __handle_softirq
163 ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
164__handle_softirq_continue:
165rtrap_xcall:
166 sethi %hi(0xf << 20), %l4
167 and %l1, %l4, %l4
168 andn %l1, %l4, %l1
169 srl %l4, 20, %l4
170#ifdef CONFIG_TRACE_IRQFLAGS
171 brnz,pn %l4, rtrap_no_irq_enable
172 nop
173 call trace_hardirqs_on
174 nop
175 wrpr %l4, %pil
176#endif
177rtrap_no_irq_enable:
178 andcc %l1, TSTATE_PRIV, %l3
179 bne,pn %icc, to_kernel
180 nop
181
182 /* We must hold IRQs off and atomically test schedule+signal
183 * state, then hold them off all the way back to userspace.
184 * If we are returning to kernel, none of this matters. Note
185 * that we are disabling interrupts via PSTATE_IE, not using
186 * %pil.
187 *
188 * If we do not do this, there is a window where we would do
189 * the tests, later the signal/resched event arrives but we do
190 * not process it since we are still in kernel mode. It would
191 * take until the next local IRQ before the signal/resched
192 * event would be handled.
193 *
194 * This also means that if we have to deal with performance
195 * counters or user windows, we have to redo all of these
196 * sched+signal checks with IRQs disabled.
197 */
198to_user: wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
199 wrpr 0, %pil
200__handle_preemption_continue:
201 ldx [%g6 + TI_FLAGS], %l0
202 sethi %hi(_TIF_USER_WORK_MASK), %o0
203 or %o0, %lo(_TIF_USER_WORK_MASK), %o0
204 andcc %l0, %o0, %g0
205 sethi %hi(TSTATE_PEF), %o0
206 be,pt %xcc, user_nowork
207 andcc %l1, %o0, %g0
208 andcc %l0, _TIF_NEED_RESCHED, %g0
209 bne,pn %xcc, __handle_preemption
210 andcc %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
211 bne,pn %xcc, __handle_signal
212__handle_signal_continue:
213 ldub [%g6 + TI_WSAVED], %o2
214 brnz,pn %o2, __handle_user_windows
215 nop
216__handle_user_windows_continue:
217 ldx [%g6 + TI_FLAGS], %l5
218 andcc %l5, _TIF_PERFCTR, %g0
219 sethi %hi(TSTATE_PEF), %o0
220 bne,pn %xcc, __handle_perfctrs
221__handle_perfctrs_continue:
222 andcc %l1, %o0, %g0
223
224 /* This fpdepth clear is necessary for non-syscall rtraps only */
225user_nowork:
226 bne,pn %xcc, __handle_userfpu
227 stb %g0, [%g6 + TI_FPDEPTH]
228__handle_userfpu_continue:
229
230rt_continue: ldx [%sp + PTREGS_OFF + PT_V9_G1], %g1
231 ldx [%sp + PTREGS_OFF + PT_V9_G2], %g2
232
233 ldx [%sp + PTREGS_OFF + PT_V9_G3], %g3
234 ldx [%sp + PTREGS_OFF + PT_V9_G4], %g4
235 ldx [%sp + PTREGS_OFF + PT_V9_G5], %g5
236 brz,pt %l3, 1f
237 mov %g6, %l2
238
239 /* Must do this before thread reg is clobbered below. */
240 LOAD_PER_CPU_BASE(%g5, %g6, %i0, %i1, %i2)
2411:
242 ldx [%sp + PTREGS_OFF + PT_V9_G6], %g6
243 ldx [%sp + PTREGS_OFF + PT_V9_G7], %g7
244
245 /* Normal globals are restored, go to trap globals. */
246661: wrpr %g0, RTRAP_PSTATE_AG_IRQOFF, %pstate
247 nop
248 .section .sun4v_2insn_patch, "ax"
249 .word 661b
250 wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
251 SET_GL(1)
252 .previous
253
254 mov %l2, %g6
255
256 ldx [%sp + PTREGS_OFF + PT_V9_I0], %i0
257 ldx [%sp + PTREGS_OFF + PT_V9_I1], %i1
258
259 ldx [%sp + PTREGS_OFF + PT_V9_I2], %i2
260 ldx [%sp + PTREGS_OFF + PT_V9_I3], %i3
261 ldx [%sp + PTREGS_OFF + PT_V9_I4], %i4
262 ldx [%sp + PTREGS_OFF + PT_V9_I5], %i5
263 ldx [%sp + PTREGS_OFF + PT_V9_I6], %i6
264 ldx [%sp + PTREGS_OFF + PT_V9_I7], %i7
265 ldx [%sp + PTREGS_OFF + PT_V9_TPC], %l2
266 ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %o2
267
268 ld [%sp + PTREGS_OFF + PT_V9_Y], %o3
269 wr %o3, %g0, %y
270 wrpr %l4, 0x0, %pil
271 wrpr %g0, 0x1, %tl
272 andn %l1, TSTATE_SYSCALL, %l1
273 wrpr %l1, %g0, %tstate
274 wrpr %l2, %g0, %tpc
275 wrpr %o2, %g0, %tnpc
276
277 brnz,pn %l3, kern_rtt
278 mov PRIMARY_CONTEXT, %l7
279
280661: ldxa [%l7 + %l7] ASI_DMMU, %l0
281 .section .sun4v_1insn_patch, "ax"
282 .word 661b
283 ldxa [%l7 + %l7] ASI_MMU, %l0
284 .previous
285
286 sethi %hi(sparc64_kern_pri_nuc_bits), %l1
287 ldx [%l1 + %lo(sparc64_kern_pri_nuc_bits)], %l1
288 or %l0, %l1, %l0
289
290661: stxa %l0, [%l7] ASI_DMMU
291 .section .sun4v_1insn_patch, "ax"
292 .word 661b
293 stxa %l0, [%l7] ASI_MMU
294 .previous
295
296 sethi %hi(KERNBASE), %l7
297 flush %l7
298 rdpr %wstate, %l1
299 rdpr %otherwin, %l2
300 srl %l1, 3, %l1
301
302 wrpr %l2, %g0, %canrestore
303 wrpr %l1, %g0, %wstate
304 brnz,pt %l2, user_rtt_restore
305 wrpr %g0, %g0, %otherwin
306
307 ldx [%g6 + TI_FLAGS], %g3
308 wr %g0, ASI_AIUP, %asi
309 rdpr %cwp, %g1
310 andcc %g3, _TIF_32BIT, %g0
311 sub %g1, 1, %g1
312 bne,pt %xcc, user_rtt_fill_32bit
313 wrpr %g1, %cwp
314 ba,a,pt %xcc, user_rtt_fill_64bit
315
316user_rtt_fill_fixup:
317 rdpr %cwp, %g1
318 add %g1, 1, %g1
319 wrpr %g1, 0x0, %cwp
320
321 rdpr %wstate, %g2
322 sll %g2, 3, %g2
323 wrpr %g2, 0x0, %wstate
324
325 /* We know %canrestore and %otherwin are both zero. */
326
327 sethi %hi(sparc64_kern_pri_context), %g2
328 ldx [%g2 + %lo(sparc64_kern_pri_context)], %g2
329 mov PRIMARY_CONTEXT, %g1
330
331661: stxa %g2, [%g1] ASI_DMMU
332 .section .sun4v_1insn_patch, "ax"
333 .word 661b
334 stxa %g2, [%g1] ASI_MMU
335 .previous
336
337 sethi %hi(KERNBASE), %g1
338 flush %g1
339
340 or %g4, FAULT_CODE_WINFIXUP, %g4
341 stb %g4, [%g6 + TI_FAULT_CODE]
342 stx %g5, [%g6 + TI_FAULT_ADDR]
343
344 mov %g6, %l1
345 wrpr %g0, 0x0, %tl
346
347661: nop
348 .section .sun4v_1insn_patch, "ax"
349 .word 661b
350 SET_GL(0)
351 .previous
352
353 wrpr %g0, RTRAP_PSTATE, %pstate
354
355 mov %l1, %g6
356 ldx [%g6 + TI_TASK], %g4
357 LOAD_PER_CPU_BASE(%g5, %g6, %g1, %g2, %g3)
358 call do_sparc64_fault
359 add %sp, PTREGS_OFF, %o0
360 ba,pt %xcc, rtrap
361 nop
362
363user_rtt_pre_restore:
364 add %g1, 1, %g1
365 wrpr %g1, 0x0, %cwp
366
367user_rtt_restore:
368 restore
369 rdpr %canrestore, %g1
370 wrpr %g1, 0x0, %cleanwin
371 retry
372 nop
373
374kern_rtt: rdpr %canrestore, %g1
375 brz,pn %g1, kern_rtt_fill
376 nop
377kern_rtt_restore:
378 stw %g0, [%sp + PTREGS_OFF + PT_V9_MAGIC]
379 restore
380 retry
381
382to_kernel:
383#ifdef CONFIG_PREEMPT
384 ldsw [%g6 + TI_PRE_COUNT], %l5
385 brnz %l5, kern_fpucheck
386 ldx [%g6 + TI_FLAGS], %l5
387 andcc %l5, _TIF_NEED_RESCHED, %g0
388 be,pt %xcc, kern_fpucheck
389 nop
390 cmp %l4, 0
391 bne,pn %xcc, kern_fpucheck
392 sethi %hi(PREEMPT_ACTIVE), %l6
393 stw %l6, [%g6 + TI_PRE_COUNT]
394 call schedule
395 nop
396 ba,pt %xcc, rtrap
397 stw %g0, [%g6 + TI_PRE_COUNT]
398#endif
399kern_fpucheck: ldub [%g6 + TI_FPDEPTH], %l5
400 brz,pt %l5, rt_continue
401 srl %l5, 1, %o0
402 add %g6, TI_FPSAVED, %l6
403 ldub [%l6 + %o0], %l2
404 sub %l5, 2, %l5
405
406 add %g6, TI_GSR, %o1
407 andcc %l2, (FPRS_FEF|FPRS_DU), %g0
408 be,pt %icc, 2f
409 and %l2, FPRS_DL, %l6
410 andcc %l2, FPRS_FEF, %g0
411 be,pn %icc, 5f
412 sll %o0, 3, %o5
413 rd %fprs, %g1
414
415 wr %g1, FPRS_FEF, %fprs
416 ldx [%o1 + %o5], %g1
417 add %g6, TI_XFSR, %o1
418 sll %o0, 8, %o2
419 add %g6, TI_FPREGS, %o3
420 brz,pn %l6, 1f
421 add %g6, TI_FPREGS+0x40, %o4
422
423 membar #Sync
424 ldda [%o3 + %o2] ASI_BLK_P, %f0
425 ldda [%o4 + %o2] ASI_BLK_P, %f16
426 membar #Sync
4271: andcc %l2, FPRS_DU, %g0
428 be,pn %icc, 1f
429 wr %g1, 0, %gsr
430 add %o2, 0x80, %o2
431 membar #Sync
432 ldda [%o3 + %o2] ASI_BLK_P, %f32
433 ldda [%o4 + %o2] ASI_BLK_P, %f48
4341: membar #Sync
435 ldx [%o1 + %o5], %fsr
4362: stb %l5, [%g6 + TI_FPDEPTH]
437 ba,pt %xcc, rt_continue
438 nop
4395: wr %g0, FPRS_FEF, %fprs
440 sll %o0, 8, %o2
441
442 add %g6, TI_FPREGS+0x80, %o3
443 add %g6, TI_FPREGS+0xc0, %o4
444 membar #Sync
445 ldda [%o3 + %o2] ASI_BLK_P, %f32
446 ldda [%o4 + %o2] ASI_BLK_P, %f48
447 membar #Sync
448 wr %g0, FPRS_DU, %fprs
449 ba,pt %xcc, rt_continue
450 stb %l5, [%g6 + TI_FPDEPTH]
diff --git a/arch/sparc/kernel/sbus.c b/arch/sparc/kernel/sbus.c
new file mode 100644
index 000000000000..2ead310066d1
--- /dev/null
+++ b/arch/sparc/kernel/sbus.c
@@ -0,0 +1,674 @@
1/*
2 * sbus.c: UltraSparc SBUS controller support.
3 *
4 * Copyright (C) 1999 David S. Miller (davem@redhat.com)
5 */
6
7#include <linux/kernel.h>
8#include <linux/types.h>
9#include <linux/mm.h>
10#include <linux/spinlock.h>
11#include <linux/slab.h>
12#include <linux/init.h>
13#include <linux/interrupt.h>
14#include <linux/of.h>
15#include <linux/of_device.h>
16
17#include <asm/page.h>
18#include <asm/io.h>
19#include <asm/upa.h>
20#include <asm/cache.h>
21#include <asm/dma.h>
22#include <asm/irq.h>
23#include <asm/prom.h>
24#include <asm/oplib.h>
25#include <asm/starfire.h>
26
27#include "iommu_common.h"
28
29#define MAP_BASE ((u32)0xc0000000)
30
31/* Offsets from iommu_regs */
32#define SYSIO_IOMMUREG_BASE 0x2400UL
33#define IOMMU_CONTROL (0x2400UL - 0x2400UL) /* IOMMU control register */
34#define IOMMU_TSBBASE (0x2408UL - 0x2400UL) /* TSB base address register */
35#define IOMMU_FLUSH (0x2410UL - 0x2400UL) /* IOMMU flush register */
36#define IOMMU_VADIAG (0x4400UL - 0x2400UL) /* SBUS virtual address diagnostic */
37#define IOMMU_TAGCMP (0x4408UL - 0x2400UL) /* TLB tag compare diagnostics */
38#define IOMMU_LRUDIAG (0x4500UL - 0x2400UL) /* IOMMU LRU queue diagnostics */
39#define IOMMU_TAGDIAG (0x4580UL - 0x2400UL) /* TLB tag diagnostics */
40#define IOMMU_DRAMDIAG (0x4600UL - 0x2400UL) /* TLB data RAM diagnostics */
41
42#define IOMMU_DRAM_VALID (1UL << 30UL)
43
44/* Offsets from strbuf_regs */
45#define SYSIO_STRBUFREG_BASE 0x2800UL
46#define STRBUF_CONTROL (0x2800UL - 0x2800UL) /* Control */
47#define STRBUF_PFLUSH (0x2808UL - 0x2800UL) /* Page flush/invalidate */
48#define STRBUF_FSYNC (0x2810UL - 0x2800UL) /* Flush synchronization */
49#define STRBUF_DRAMDIAG (0x5000UL - 0x2800UL) /* data RAM diagnostic */
50#define STRBUF_ERRDIAG (0x5400UL - 0x2800UL) /* error status diagnostics */
51#define STRBUF_PTAGDIAG (0x5800UL - 0x2800UL) /* Page tag diagnostics */
52#define STRBUF_LTAGDIAG (0x5900UL - 0x2800UL) /* Line tag diagnostics */
53
54#define STRBUF_TAG_VALID 0x02UL
55
56/* Enable 64-bit DVMA mode for the given device. */
57void sbus_set_sbus64(struct device *dev, int bursts)
58{
59 struct iommu *iommu = dev->archdata.iommu;
60 struct of_device *op = to_of_device(dev);
61 const struct linux_prom_registers *regs;
62 unsigned long cfg_reg;
63 int slot;
64 u64 val;
65
66 regs = of_get_property(op->node, "reg", NULL);
67 if (!regs) {
68 printk(KERN_ERR "sbus_set_sbus64: Cannot find regs for %s\n",
69 op->node->full_name);
70 return;
71 }
72 slot = regs->which_io;
73
74 cfg_reg = iommu->write_complete_reg;
75 switch (slot) {
76 case 0:
77 cfg_reg += 0x20UL;
78 break;
79 case 1:
80 cfg_reg += 0x28UL;
81 break;
82 case 2:
83 cfg_reg += 0x30UL;
84 break;
85 case 3:
86 cfg_reg += 0x38UL;
87 break;
88 case 13:
89 cfg_reg += 0x40UL;
90 break;
91 case 14:
92 cfg_reg += 0x48UL;
93 break;
94 case 15:
95 cfg_reg += 0x50UL;
96 break;
97
98 default:
99 return;
100 };
101
102 val = upa_readq(cfg_reg);
103 if (val & (1UL << 14UL)) {
104 /* Extended transfer mode already enabled. */
105 return;
106 }
107
108 val |= (1UL << 14UL);
109
110 if (bursts & DMA_BURST8)
111 val |= (1UL << 1UL);
112 if (bursts & DMA_BURST16)
113 val |= (1UL << 2UL);
114 if (bursts & DMA_BURST32)
115 val |= (1UL << 3UL);
116 if (bursts & DMA_BURST64)
117 val |= (1UL << 4UL);
118 upa_writeq(val, cfg_reg);
119}
120
121/* INO number to IMAP register offset for SYSIO external IRQ's.
122 * This should conform to both Sunfire/Wildfire server and Fusion
123 * desktop designs.
124 */
125#define SYSIO_IMAP_SLOT0 0x2c00UL
126#define SYSIO_IMAP_SLOT1 0x2c08UL
127#define SYSIO_IMAP_SLOT2 0x2c10UL
128#define SYSIO_IMAP_SLOT3 0x2c18UL
129#define SYSIO_IMAP_SCSI 0x3000UL
130#define SYSIO_IMAP_ETH 0x3008UL
131#define SYSIO_IMAP_BPP 0x3010UL
132#define SYSIO_IMAP_AUDIO 0x3018UL
133#define SYSIO_IMAP_PFAIL 0x3020UL
134#define SYSIO_IMAP_KMS 0x3028UL
135#define SYSIO_IMAP_FLPY 0x3030UL
136#define SYSIO_IMAP_SHW 0x3038UL
137#define SYSIO_IMAP_KBD 0x3040UL
138#define SYSIO_IMAP_MS 0x3048UL
139#define SYSIO_IMAP_SER 0x3050UL
140#define SYSIO_IMAP_TIM0 0x3060UL
141#define SYSIO_IMAP_TIM1 0x3068UL
142#define SYSIO_IMAP_UE 0x3070UL
143#define SYSIO_IMAP_CE 0x3078UL
144#define SYSIO_IMAP_SBERR 0x3080UL
145#define SYSIO_IMAP_PMGMT 0x3088UL
146#define SYSIO_IMAP_GFX 0x3090UL
147#define SYSIO_IMAP_EUPA 0x3098UL
148
149#define bogon ((unsigned long) -1)
150static unsigned long sysio_irq_offsets[] = {
151 /* SBUS Slot 0 --> 3, level 1 --> 7 */
152 SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
153 SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
154 SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
155 SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
156 SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
157 SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
158 SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
159 SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
160
161 /* Onboard devices (not relevant/used on SunFire). */
162 SYSIO_IMAP_SCSI,
163 SYSIO_IMAP_ETH,
164 SYSIO_IMAP_BPP,
165 bogon,
166 SYSIO_IMAP_AUDIO,
167 SYSIO_IMAP_PFAIL,
168 bogon,
169 bogon,
170 SYSIO_IMAP_KMS,
171 SYSIO_IMAP_FLPY,
172 SYSIO_IMAP_SHW,
173 SYSIO_IMAP_KBD,
174 SYSIO_IMAP_MS,
175 SYSIO_IMAP_SER,
176 bogon,
177 bogon,
178 SYSIO_IMAP_TIM0,
179 SYSIO_IMAP_TIM1,
180 bogon,
181 bogon,
182 SYSIO_IMAP_UE,
183 SYSIO_IMAP_CE,
184 SYSIO_IMAP_SBERR,
185 SYSIO_IMAP_PMGMT,
186};
187
188#undef bogon
189
190#define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets)
191
192/* Convert Interrupt Mapping register pointer to associated
193 * Interrupt Clear register pointer, SYSIO specific version.
194 */
195#define SYSIO_ICLR_UNUSED0 0x3400UL
196#define SYSIO_ICLR_SLOT0 0x3408UL
197#define SYSIO_ICLR_SLOT1 0x3448UL
198#define SYSIO_ICLR_SLOT2 0x3488UL
199#define SYSIO_ICLR_SLOT3 0x34c8UL
200static unsigned long sysio_imap_to_iclr(unsigned long imap)
201{
202 unsigned long diff = SYSIO_ICLR_UNUSED0 - SYSIO_IMAP_SLOT0;
203 return imap + diff;
204}
205
206static unsigned int sbus_build_irq(struct of_device *op, unsigned int ino)
207{
208 struct iommu *iommu = op->dev.archdata.iommu;
209 unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
210 unsigned long imap, iclr;
211 int sbus_level = 0;
212
213 imap = sysio_irq_offsets[ino];
214 if (imap == ((unsigned long)-1)) {
215 prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n",
216 ino);
217 prom_halt();
218 }
219 imap += reg_base;
220
221 /* SYSIO inconsistency. For external SLOTS, we have to select
222 * the right ICLR register based upon the lower SBUS irq level
223 * bits.
224 */
225 if (ino >= 0x20) {
226 iclr = sysio_imap_to_iclr(imap);
227 } else {
228 int sbus_slot = (ino & 0x18)>>3;
229
230 sbus_level = ino & 0x7;
231
232 switch(sbus_slot) {
233 case 0:
234 iclr = reg_base + SYSIO_ICLR_SLOT0;
235 break;
236 case 1:
237 iclr = reg_base + SYSIO_ICLR_SLOT1;
238 break;
239 case 2:
240 iclr = reg_base + SYSIO_ICLR_SLOT2;
241 break;
242 default:
243 case 3:
244 iclr = reg_base + SYSIO_ICLR_SLOT3;
245 break;
246 };
247
248 iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
249 }
250 return build_irq(sbus_level, iclr, imap);
251}
252
253/* Error interrupt handling. */
254#define SYSIO_UE_AFSR 0x0030UL
255#define SYSIO_UE_AFAR 0x0038UL
256#define SYSIO_UEAFSR_PPIO 0x8000000000000000UL /* Primary PIO cause */
257#define SYSIO_UEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read cause */
258#define SYSIO_UEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write cause */
259#define SYSIO_UEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO is cause */
260#define SYSIO_UEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read cause */
261#define SYSIO_UEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write cause*/
262#define SYSIO_UEAFSR_RESV1 0x03ff000000000000UL /* Reserved */
263#define SYSIO_UEAFSR_DOFF 0x0000e00000000000UL /* Doubleword Offset */
264#define SYSIO_UEAFSR_SIZE 0x00001c0000000000UL /* Bad transfer size 2^SIZE */
265#define SYSIO_UEAFSR_MID 0x000003e000000000UL /* UPA MID causing the fault */
266#define SYSIO_UEAFSR_RESV2 0x0000001fffffffffUL /* Reserved */
267static irqreturn_t sysio_ue_handler(int irq, void *dev_id)
268{
269 struct of_device *op = dev_id;
270 struct iommu *iommu = op->dev.archdata.iommu;
271 unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
272 unsigned long afsr_reg, afar_reg;
273 unsigned long afsr, afar, error_bits;
274 int reported, portid;
275
276 afsr_reg = reg_base + SYSIO_UE_AFSR;
277 afar_reg = reg_base + SYSIO_UE_AFAR;
278
279 /* Latch error status. */
280 afsr = upa_readq(afsr_reg);
281 afar = upa_readq(afar_reg);
282
283 /* Clear primary/secondary error status bits. */
284 error_bits = afsr &
285 (SYSIO_UEAFSR_PPIO | SYSIO_UEAFSR_PDRD | SYSIO_UEAFSR_PDWR |
286 SYSIO_UEAFSR_SPIO | SYSIO_UEAFSR_SDRD | SYSIO_UEAFSR_SDWR);
287 upa_writeq(error_bits, afsr_reg);
288
289 portid = of_getintprop_default(op->node, "portid", -1);
290
291 /* Log the error. */
292 printk("SYSIO[%x]: Uncorrectable ECC Error, primary error type[%s]\n",
293 portid,
294 (((error_bits & SYSIO_UEAFSR_PPIO) ?
295 "PIO" :
296 ((error_bits & SYSIO_UEAFSR_PDRD) ?
297 "DVMA Read" :
298 ((error_bits & SYSIO_UEAFSR_PDWR) ?
299 "DVMA Write" : "???")))));
300 printk("SYSIO[%x]: DOFF[%lx] SIZE[%lx] MID[%lx]\n",
301 portid,
302 (afsr & SYSIO_UEAFSR_DOFF) >> 45UL,
303 (afsr & SYSIO_UEAFSR_SIZE) >> 42UL,
304 (afsr & SYSIO_UEAFSR_MID) >> 37UL);
305 printk("SYSIO[%x]: AFAR[%016lx]\n", portid, afar);
306 printk("SYSIO[%x]: Secondary UE errors [", portid);
307 reported = 0;
308 if (afsr & SYSIO_UEAFSR_SPIO) {
309 reported++;
310 printk("(PIO)");
311 }
312 if (afsr & SYSIO_UEAFSR_SDRD) {
313 reported++;
314 printk("(DVMA Read)");
315 }
316 if (afsr & SYSIO_UEAFSR_SDWR) {
317 reported++;
318 printk("(DVMA Write)");
319 }
320 if (!reported)
321 printk("(none)");
322 printk("]\n");
323
324 return IRQ_HANDLED;
325}
326
327#define SYSIO_CE_AFSR 0x0040UL
328#define SYSIO_CE_AFAR 0x0048UL
329#define SYSIO_CEAFSR_PPIO 0x8000000000000000UL /* Primary PIO cause */
330#define SYSIO_CEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read cause */
331#define SYSIO_CEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write cause */
332#define SYSIO_CEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO cause */
333#define SYSIO_CEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read cause */
334#define SYSIO_CEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write cause*/
335#define SYSIO_CEAFSR_RESV1 0x0300000000000000UL /* Reserved */
336#define SYSIO_CEAFSR_ESYND 0x00ff000000000000UL /* Syndrome Bits */
337#define SYSIO_CEAFSR_DOFF 0x0000e00000000000UL /* Double Offset */
338#define SYSIO_CEAFSR_SIZE 0x00001c0000000000UL /* Bad transfer size 2^SIZE */
339#define SYSIO_CEAFSR_MID 0x000003e000000000UL /* UPA MID causing the fault */
340#define SYSIO_CEAFSR_RESV2 0x0000001fffffffffUL /* Reserved */
341static irqreturn_t sysio_ce_handler(int irq, void *dev_id)
342{
343 struct of_device *op = dev_id;
344 struct iommu *iommu = op->dev.archdata.iommu;
345 unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
346 unsigned long afsr_reg, afar_reg;
347 unsigned long afsr, afar, error_bits;
348 int reported, portid;
349
350 afsr_reg = reg_base + SYSIO_CE_AFSR;
351 afar_reg = reg_base + SYSIO_CE_AFAR;
352
353 /* Latch error status. */
354 afsr = upa_readq(afsr_reg);
355 afar = upa_readq(afar_reg);
356
357 /* Clear primary/secondary error status bits. */
358 error_bits = afsr &
359 (SYSIO_CEAFSR_PPIO | SYSIO_CEAFSR_PDRD | SYSIO_CEAFSR_PDWR |
360 SYSIO_CEAFSR_SPIO | SYSIO_CEAFSR_SDRD | SYSIO_CEAFSR_SDWR);
361 upa_writeq(error_bits, afsr_reg);
362
363 portid = of_getintprop_default(op->node, "portid", -1);
364
365 printk("SYSIO[%x]: Correctable ECC Error, primary error type[%s]\n",
366 portid,
367 (((error_bits & SYSIO_CEAFSR_PPIO) ?
368 "PIO" :
369 ((error_bits & SYSIO_CEAFSR_PDRD) ?
370 "DVMA Read" :
371 ((error_bits & SYSIO_CEAFSR_PDWR) ?
372 "DVMA Write" : "???")))));
373
374 /* XXX Use syndrome and afar to print out module string just like
375 * XXX UDB CE trap handler does... -DaveM
376 */
377 printk("SYSIO[%x]: DOFF[%lx] ECC Syndrome[%lx] Size[%lx] MID[%lx]\n",
378 portid,
379 (afsr & SYSIO_CEAFSR_DOFF) >> 45UL,
380 (afsr & SYSIO_CEAFSR_ESYND) >> 48UL,
381 (afsr & SYSIO_CEAFSR_SIZE) >> 42UL,
382 (afsr & SYSIO_CEAFSR_MID) >> 37UL);
383 printk("SYSIO[%x]: AFAR[%016lx]\n", portid, afar);
384
385 printk("SYSIO[%x]: Secondary CE errors [", portid);
386 reported = 0;
387 if (afsr & SYSIO_CEAFSR_SPIO) {
388 reported++;
389 printk("(PIO)");
390 }
391 if (afsr & SYSIO_CEAFSR_SDRD) {
392 reported++;
393 printk("(DVMA Read)");
394 }
395 if (afsr & SYSIO_CEAFSR_SDWR) {
396 reported++;
397 printk("(DVMA Write)");
398 }
399 if (!reported)
400 printk("(none)");
401 printk("]\n");
402
403 return IRQ_HANDLED;
404}
405
406#define SYSIO_SBUS_AFSR 0x2010UL
407#define SYSIO_SBUS_AFAR 0x2018UL
408#define SYSIO_SBAFSR_PLE 0x8000000000000000UL /* Primary Late PIO Error */
409#define SYSIO_SBAFSR_PTO 0x4000000000000000UL /* Primary SBUS Timeout */
410#define SYSIO_SBAFSR_PBERR 0x2000000000000000UL /* Primary SBUS Error ACK */
411#define SYSIO_SBAFSR_SLE 0x1000000000000000UL /* Secondary Late PIO Error */
412#define SYSIO_SBAFSR_STO 0x0800000000000000UL /* Secondary SBUS Timeout */
413#define SYSIO_SBAFSR_SBERR 0x0400000000000000UL /* Secondary SBUS Error ACK */
414#define SYSIO_SBAFSR_RESV1 0x03ff000000000000UL /* Reserved */
415#define SYSIO_SBAFSR_RD 0x0000800000000000UL /* Primary was late PIO read */
416#define SYSIO_SBAFSR_RESV2 0x0000600000000000UL /* Reserved */
417#define SYSIO_SBAFSR_SIZE 0x00001c0000000000UL /* Size of transfer */
418#define SYSIO_SBAFSR_MID 0x000003e000000000UL /* MID causing the error */
419#define SYSIO_SBAFSR_RESV3 0x0000001fffffffffUL /* Reserved */
420static irqreturn_t sysio_sbus_error_handler(int irq, void *dev_id)
421{
422 struct of_device *op = dev_id;
423 struct iommu *iommu = op->dev.archdata.iommu;
424 unsigned long afsr_reg, afar_reg, reg_base;
425 unsigned long afsr, afar, error_bits;
426 int reported, portid;
427
428 reg_base = iommu->write_complete_reg - 0x2000UL;
429 afsr_reg = reg_base + SYSIO_SBUS_AFSR;
430 afar_reg = reg_base + SYSIO_SBUS_AFAR;
431
432 afsr = upa_readq(afsr_reg);
433 afar = upa_readq(afar_reg);
434
435 /* Clear primary/secondary error status bits. */
436 error_bits = afsr &
437 (SYSIO_SBAFSR_PLE | SYSIO_SBAFSR_PTO | SYSIO_SBAFSR_PBERR |
438 SYSIO_SBAFSR_SLE | SYSIO_SBAFSR_STO | SYSIO_SBAFSR_SBERR);
439 upa_writeq(error_bits, afsr_reg);
440
441 portid = of_getintprop_default(op->node, "portid", -1);
442
443 /* Log the error. */
444 printk("SYSIO[%x]: SBUS Error, primary error type[%s] read(%d)\n",
445 portid,
446 (((error_bits & SYSIO_SBAFSR_PLE) ?
447 "Late PIO Error" :
448 ((error_bits & SYSIO_SBAFSR_PTO) ?
449 "Time Out" :
450 ((error_bits & SYSIO_SBAFSR_PBERR) ?
451 "Error Ack" : "???")))),
452 (afsr & SYSIO_SBAFSR_RD) ? 1 : 0);
453 printk("SYSIO[%x]: size[%lx] MID[%lx]\n",
454 portid,
455 (afsr & SYSIO_SBAFSR_SIZE) >> 42UL,
456 (afsr & SYSIO_SBAFSR_MID) >> 37UL);
457 printk("SYSIO[%x]: AFAR[%016lx]\n", portid, afar);
458 printk("SYSIO[%x]: Secondary SBUS errors [", portid);
459 reported = 0;
460 if (afsr & SYSIO_SBAFSR_SLE) {
461 reported++;
462 printk("(Late PIO Error)");
463 }
464 if (afsr & SYSIO_SBAFSR_STO) {
465 reported++;
466 printk("(Time Out)");
467 }
468 if (afsr & SYSIO_SBAFSR_SBERR) {
469 reported++;
470 printk("(Error Ack)");
471 }
472 if (!reported)
473 printk("(none)");
474 printk("]\n");
475
476 /* XXX check iommu/strbuf for further error status XXX */
477
478 return IRQ_HANDLED;
479}
480
481#define ECC_CONTROL 0x0020UL
482#define SYSIO_ECNTRL_ECCEN 0x8000000000000000UL /* Enable ECC Checking */
483#define SYSIO_ECNTRL_UEEN 0x4000000000000000UL /* Enable UE Interrupts */
484#define SYSIO_ECNTRL_CEEN 0x2000000000000000UL /* Enable CE Interrupts */
485
486#define SYSIO_UE_INO 0x34
487#define SYSIO_CE_INO 0x35
488#define SYSIO_SBUSERR_INO 0x36
489
490static void __init sysio_register_error_handlers(struct of_device *op)
491{
492 struct iommu *iommu = op->dev.archdata.iommu;
493 unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
494 unsigned int irq;
495 u64 control;
496 int portid;
497
498 portid = of_getintprop_default(op->node, "portid", -1);
499
500 irq = sbus_build_irq(op, SYSIO_UE_INO);
501 if (request_irq(irq, sysio_ue_handler, 0,
502 "SYSIO_UE", op) < 0) {
503 prom_printf("SYSIO[%x]: Cannot register UE interrupt.\n",
504 portid);
505 prom_halt();
506 }
507
508 irq = sbus_build_irq(op, SYSIO_CE_INO);
509 if (request_irq(irq, sysio_ce_handler, 0,
510 "SYSIO_CE", op) < 0) {
511 prom_printf("SYSIO[%x]: Cannot register CE interrupt.\n",
512 portid);
513 prom_halt();
514 }
515
516 irq = sbus_build_irq(op, SYSIO_SBUSERR_INO);
517 if (request_irq(irq, sysio_sbus_error_handler, 0,
518 "SYSIO_SBERR", op) < 0) {
519 prom_printf("SYSIO[%x]: Cannot register SBUS Error interrupt.\n",
520 portid);
521 prom_halt();
522 }
523
524 /* Now turn the error interrupts on and also enable ECC checking. */
525 upa_writeq((SYSIO_ECNTRL_ECCEN |
526 SYSIO_ECNTRL_UEEN |
527 SYSIO_ECNTRL_CEEN),
528 reg_base + ECC_CONTROL);
529
530 control = upa_readq(iommu->write_complete_reg);
531 control |= 0x100UL; /* SBUS Error Interrupt Enable */
532 upa_writeq(control, iommu->write_complete_reg);
533}
534
535/* Boot time initialization. */
536static void __init sbus_iommu_init(struct of_device *op)
537{
538 const struct linux_prom64_registers *pr;
539 struct device_node *dp = op->node;
540 struct iommu *iommu;
541 struct strbuf *strbuf;
542 unsigned long regs, reg_base;
543 int i, portid;
544 u64 control;
545
546 pr = of_get_property(dp, "reg", NULL);
547 if (!pr) {
548 prom_printf("sbus_iommu_init: Cannot map SYSIO "
549 "control registers.\n");
550 prom_halt();
551 }
552 regs = pr->phys_addr;
553
554 iommu = kzalloc(sizeof(*iommu), GFP_ATOMIC);
555 if (!iommu)
556 goto fatal_memory_error;
557 strbuf = kzalloc(sizeof(*strbuf), GFP_ATOMIC);
558 if (!strbuf)
559 goto fatal_memory_error;
560
561 op->dev.archdata.iommu = iommu;
562 op->dev.archdata.stc = strbuf;
563 op->dev.archdata.numa_node = -1;
564
565 reg_base = regs + SYSIO_IOMMUREG_BASE;
566 iommu->iommu_control = reg_base + IOMMU_CONTROL;
567 iommu->iommu_tsbbase = reg_base + IOMMU_TSBBASE;
568 iommu->iommu_flush = reg_base + IOMMU_FLUSH;
569 iommu->iommu_tags = iommu->iommu_control +
570 (IOMMU_TAGDIAG - IOMMU_CONTROL);
571
572 reg_base = regs + SYSIO_STRBUFREG_BASE;
573 strbuf->strbuf_control = reg_base + STRBUF_CONTROL;
574 strbuf->strbuf_pflush = reg_base + STRBUF_PFLUSH;
575 strbuf->strbuf_fsync = reg_base + STRBUF_FSYNC;
576
577 strbuf->strbuf_enabled = 1;
578
579 strbuf->strbuf_flushflag = (volatile unsigned long *)
580 ((((unsigned long)&strbuf->__flushflag_buf[0])
581 + 63UL)
582 & ~63UL);
583 strbuf->strbuf_flushflag_pa = (unsigned long)
584 __pa(strbuf->strbuf_flushflag);
585
586 /* The SYSIO SBUS control register is used for dummy reads
587 * in order to ensure write completion.
588 */
589 iommu->write_complete_reg = regs + 0x2000UL;
590
591 portid = of_getintprop_default(op->node, "portid", -1);
592 printk(KERN_INFO "SYSIO: UPA portID %x, at %016lx\n",
593 portid, regs);
594
595 /* Setup for TSB_SIZE=7, TBW_SIZE=0, MMU_DE=1, MMU_EN=1 */
596 if (iommu_table_init(iommu, IO_TSB_SIZE, MAP_BASE, 0xffffffff, -1))
597 goto fatal_memory_error;
598
599 control = upa_readq(iommu->iommu_control);
600 control = ((7UL << 16UL) |
601 (0UL << 2UL) |
602 (1UL << 1UL) |
603 (1UL << 0UL));
604 upa_writeq(control, iommu->iommu_control);
605
606 /* Clean out any cruft in the IOMMU using
607 * diagnostic accesses.
608 */
609 for (i = 0; i < 16; i++) {
610 unsigned long dram, tag;
611
612 dram = iommu->iommu_control + (IOMMU_DRAMDIAG - IOMMU_CONTROL);
613 tag = iommu->iommu_control + (IOMMU_TAGDIAG - IOMMU_CONTROL);
614
615 dram += (unsigned long)i * 8UL;
616 tag += (unsigned long)i * 8UL;
617 upa_writeq(0, dram);
618 upa_writeq(0, tag);
619 }
620 upa_readq(iommu->write_complete_reg);
621
622 /* Give the TSB to SYSIO. */
623 upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);
624
625 /* Setup streaming buffer, DE=1 SB_EN=1 */
626 control = (1UL << 1UL) | (1UL << 0UL);
627 upa_writeq(control, strbuf->strbuf_control);
628
629 /* Clear out the tags using diagnostics. */
630 for (i = 0; i < 16; i++) {
631 unsigned long ptag, ltag;
632
633 ptag = strbuf->strbuf_control +
634 (STRBUF_PTAGDIAG - STRBUF_CONTROL);
635 ltag = strbuf->strbuf_control +
636 (STRBUF_LTAGDIAG - STRBUF_CONTROL);
637 ptag += (unsigned long)i * 8UL;
638 ltag += (unsigned long)i * 8UL;
639
640 upa_writeq(0UL, ptag);
641 upa_writeq(0UL, ltag);
642 }
643
644 /* Enable DVMA arbitration for all devices/slots. */
645 control = upa_readq(iommu->write_complete_reg);
646 control |= 0x3fUL;
647 upa_writeq(control, iommu->write_complete_reg);
648
649 /* Now some Xfire specific grot... */
650 if (this_is_starfire)
651 starfire_hookup(portid);
652
653 sysio_register_error_handlers(op);
654 return;
655
656fatal_memory_error:
657 prom_printf("sbus_iommu_init: Fatal memory allocation error.\n");
658}
659
660static int __init sbus_init(void)
661{
662 struct device_node *dp;
663
664 for_each_node_by_name(dp, "sbus") {
665 struct of_device *op = of_find_device_by_node(dp);
666
667 sbus_iommu_init(op);
668 of_propagate_archdata(op);
669 }
670
671 return 0;
672}
673
674subsys_initcall(sbus_init);
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
new file mode 100644
index 000000000000..c8b03a4f68bf
--- /dev/null
+++ b/arch/sparc/kernel/setup_64.c
@@ -0,0 +1,428 @@
1/*
2 * linux/arch/sparc64/kernel/setup.c
3 *
4 * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 */
7
8#include <linux/errno.h>
9#include <linux/sched.h>
10#include <linux/kernel.h>
11#include <linux/mm.h>
12#include <linux/stddef.h>
13#include <linux/unistd.h>
14#include <linux/ptrace.h>
15#include <linux/slab.h>
16#include <asm/smp.h>
17#include <linux/user.h>
18#include <linux/screen_info.h>
19#include <linux/delay.h>
20#include <linux/fs.h>
21#include <linux/seq_file.h>
22#include <linux/syscalls.h>
23#include <linux/kdev_t.h>
24#include <linux/major.h>
25#include <linux/string.h>
26#include <linux/init.h>
27#include <linux/inet.h>
28#include <linux/console.h>
29#include <linux/root_dev.h>
30#include <linux/interrupt.h>
31#include <linux/cpu.h>
32#include <linux/initrd.h>
33
34#include <asm/system.h>
35#include <asm/io.h>
36#include <asm/processor.h>
37#include <asm/oplib.h>
38#include <asm/page.h>
39#include <asm/pgtable.h>
40#include <asm/idprom.h>
41#include <asm/head.h>
42#include <asm/starfire.h>
43#include <asm/mmu_context.h>
44#include <asm/timer.h>
45#include <asm/sections.h>
46#include <asm/setup.h>
47#include <asm/mmu.h>
48#include <asm/ns87303.h>
49
50#ifdef CONFIG_IP_PNP
51#include <net/ipconfig.h>
52#endif
53
54#include "entry.h"
55
56/* Used to synchronize accesses to NatSemi SUPER I/O chip configure
57 * operations in asm/ns87303.h
58 */
59DEFINE_SPINLOCK(ns87303_lock);
60
61struct screen_info screen_info = {
62 0, 0, /* orig-x, orig-y */
63 0, /* unused */
64 0, /* orig-video-page */
65 0, /* orig-video-mode */
66 128, /* orig-video-cols */
67 0, 0, 0, /* unused, ega_bx, unused */
68 54, /* orig-video-lines */
69 0, /* orig-video-isVGA */
70 16 /* orig-video-points */
71};
72
73static void
74prom_console_write(struct console *con, const char *s, unsigned n)
75{
76 prom_write(s, n);
77}
78
79/* Exported for mm/init.c:paging_init. */
80unsigned long cmdline_memory_size = 0;
81
82static struct console prom_early_console = {
83 .name = "earlyprom",
84 .write = prom_console_write,
85 .flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
86 .index = -1,
87};
88
89/*
90 * Process kernel command line switches that are specific to the
91 * SPARC or that require special low-level processing.
92 */
93static void __init process_switch(char c)
94{
95 switch (c) {
96 case 'd':
97 case 's':
98 break;
99 case 'h':
100 prom_printf("boot_flags_init: Halt!\n");
101 prom_halt();
102 break;
103 case 'p':
104 /* Just ignore, this behavior is now the default. */
105 break;
106 case 'P':
107 /* Force UltraSPARC-III P-Cache on. */
108 if (tlb_type != cheetah) {
109 printk("BOOT: Ignoring P-Cache force option.\n");
110 break;
111 }
112 cheetah_pcache_forced_on = 1;
113 add_taint(TAINT_MACHINE_CHECK);
114 cheetah_enable_pcache();
115 break;
116
117 default:
118 printk("Unknown boot switch (-%c)\n", c);
119 break;
120 }
121}
122
123static void __init boot_flags_init(char *commands)
124{
125 while (*commands) {
126 /* Move to the start of the next "argument". */
127 while (*commands && *commands == ' ')
128 commands++;
129
130 /* Process any command switches, otherwise skip it. */
131 if (*commands == '\0')
132 break;
133 if (*commands == '-') {
134 commands++;
135 while (*commands && *commands != ' ')
136 process_switch(*commands++);
137 continue;
138 }
139 if (!strncmp(commands, "mem=", 4)) {
140 /*
141 * "mem=XXX[kKmM]" overrides the PROM-reported
142 * memory size.
143 */
144 cmdline_memory_size = simple_strtoul(commands + 4,
145 &commands, 0);
146 if (*commands == 'K' || *commands == 'k') {
147 cmdline_memory_size <<= 10;
148 commands++;
149 } else if (*commands=='M' || *commands=='m') {
150 cmdline_memory_size <<= 20;
151 commands++;
152 }
153 }
154 while (*commands && *commands != ' ')
155 commands++;
156 }
157}
158
159extern unsigned short root_flags;
160extern unsigned short root_dev;
161extern unsigned short ram_flags;
162#define RAMDISK_IMAGE_START_MASK 0x07FF
163#define RAMDISK_PROMPT_FLAG 0x8000
164#define RAMDISK_LOAD_FLAG 0x4000
165
166extern int root_mountflags;
167
168char reboot_command[COMMAND_LINE_SIZE];
169
170static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
171
172void __init per_cpu_patch(void)
173{
174 struct cpuid_patch_entry *p;
175 unsigned long ver;
176 int is_jbus;
177
178 if (tlb_type == spitfire && !this_is_starfire)
179 return;
180
181 is_jbus = 0;
182 if (tlb_type != hypervisor) {
183 __asm__ ("rdpr %%ver, %0" : "=r" (ver));
184 is_jbus = ((ver >> 32UL) == __JALAPENO_ID ||
185 (ver >> 32UL) == __SERRANO_ID);
186 }
187
188 p = &__cpuid_patch;
189 while (p < &__cpuid_patch_end) {
190 unsigned long addr = p->addr;
191 unsigned int *insns;
192
193 switch (tlb_type) {
194 case spitfire:
195 insns = &p->starfire[0];
196 break;
197 case cheetah:
198 case cheetah_plus:
199 if (is_jbus)
200 insns = &p->cheetah_jbus[0];
201 else
202 insns = &p->cheetah_safari[0];
203 break;
204 case hypervisor:
205 insns = &p->sun4v[0];
206 break;
207 default:
208 prom_printf("Unknown cpu type, halting.\n");
209 prom_halt();
210 };
211
212 *(unsigned int *) (addr + 0) = insns[0];
213 wmb();
214 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
215
216 *(unsigned int *) (addr + 4) = insns[1];
217 wmb();
218 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
219
220 *(unsigned int *) (addr + 8) = insns[2];
221 wmb();
222 __asm__ __volatile__("flush %0" : : "r" (addr + 8));
223
224 *(unsigned int *) (addr + 12) = insns[3];
225 wmb();
226 __asm__ __volatile__("flush %0" : : "r" (addr + 12));
227
228 p++;
229 }
230}
231
232void __init sun4v_patch(void)
233{
234 extern void sun4v_hvapi_init(void);
235 struct sun4v_1insn_patch_entry *p1;
236 struct sun4v_2insn_patch_entry *p2;
237
238 if (tlb_type != hypervisor)
239 return;
240
241 p1 = &__sun4v_1insn_patch;
242 while (p1 < &__sun4v_1insn_patch_end) {
243 unsigned long addr = p1->addr;
244
245 *(unsigned int *) (addr + 0) = p1->insn;
246 wmb();
247 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
248
249 p1++;
250 }
251
252 p2 = &__sun4v_2insn_patch;
253 while (p2 < &__sun4v_2insn_patch_end) {
254 unsigned long addr = p2->addr;
255
256 *(unsigned int *) (addr + 0) = p2->insns[0];
257 wmb();
258 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
259
260 *(unsigned int *) (addr + 4) = p2->insns[1];
261 wmb();
262 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
263
264 p2++;
265 }
266
267 sun4v_hvapi_init();
268}
269
270#ifdef CONFIG_SMP
271void __init boot_cpu_id_too_large(int cpu)
272{
273 prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
274 cpu, NR_CPUS);
275 prom_halt();
276}
277#endif
278
279void __init setup_arch(char **cmdline_p)
280{
281 /* Initialize PROM console and command line. */
282 *cmdline_p = prom_getbootargs();
283 strcpy(boot_command_line, *cmdline_p);
284 parse_early_param();
285
286 boot_flags_init(*cmdline_p);
287 register_console(&prom_early_console);
288
289 if (tlb_type == hypervisor)
290 printk("ARCH: SUN4V\n");
291 else
292 printk("ARCH: SUN4U\n");
293
294#ifdef CONFIG_DUMMY_CONSOLE
295 conswitchp = &dummy_con;
296#elif defined(CONFIG_PROM_CONSOLE)
297 conswitchp = &prom_con;
298#endif
299
300 idprom_init();
301
302 if (!root_flags)
303 root_mountflags &= ~MS_RDONLY;
304 ROOT_DEV = old_decode_dev(root_dev);
305#ifdef CONFIG_BLK_DEV_RAM
306 rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
307 rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
308 rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);
309#endif
310
311 task_thread_info(&init_task)->kregs = &fake_swapper_regs;
312
313#ifdef CONFIG_IP_PNP
314 if (!ic_set_manually) {
315 int chosen = prom_finddevice ("/chosen");
316 u32 cl, sv, gw;
317
318 cl = prom_getintdefault (chosen, "client-ip", 0);
319 sv = prom_getintdefault (chosen, "server-ip", 0);
320 gw = prom_getintdefault (chosen, "gateway-ip", 0);
321 if (cl && sv) {
322 ic_myaddr = cl;
323 ic_servaddr = sv;
324 if (gw)
325 ic_gateway = gw;
326#if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP)
327 ic_proto_enabled = 0;
328#endif
329 }
330 }
331#endif
332
333 /* Get boot processor trap_block[] setup. */
334 init_cur_cpu_trap(current_thread_info());
335
336 paging_init();
337}
338
339/* BUFFER is PAGE_SIZE bytes long. */
340
341extern void smp_info(struct seq_file *);
342extern void smp_bogo(struct seq_file *);
343extern void mmu_info(struct seq_file *);
344
345unsigned int dcache_parity_tl1_occurred;
346unsigned int icache_parity_tl1_occurred;
347
348int ncpus_probed;
349
350static int show_cpuinfo(struct seq_file *m, void *__unused)
351{
352 seq_printf(m,
353 "cpu\t\t: %s\n"
354 "fpu\t\t: %s\n"
355 "prom\t\t: %s\n"
356 "type\t\t: %s\n"
357 "ncpus probed\t: %d\n"
358 "ncpus active\t: %d\n"
359 "D$ parity tl1\t: %u\n"
360 "I$ parity tl1\t: %u\n"
361#ifndef CONFIG_SMP
362 "Cpu0ClkTck\t: %016lx\n"
363#endif
364 ,
365 sparc_cpu_type,
366 sparc_fpu_type,
367 prom_version,
368 ((tlb_type == hypervisor) ?
369 "sun4v" :
370 "sun4u"),
371 ncpus_probed,
372 num_online_cpus(),
373 dcache_parity_tl1_occurred,
374 icache_parity_tl1_occurred
375#ifndef CONFIG_SMP
376 , cpu_data(0).clock_tick
377#endif
378 );
379#ifdef CONFIG_SMP
380 smp_bogo(m);
381#endif
382 mmu_info(m);
383#ifdef CONFIG_SMP
384 smp_info(m);
385#endif
386 return 0;
387}
388
389static void *c_start(struct seq_file *m, loff_t *pos)
390{
391 /* The pointer we are returning is arbitrary,
392 * it just has to be non-NULL and not IS_ERR
393 * in the success case.
394 */
395 return *pos == 0 ? &c_start : NULL;
396}
397
398static void *c_next(struct seq_file *m, void *v, loff_t *pos)
399{
400 ++*pos;
401 return c_start(m, pos);
402}
403
404static void c_stop(struct seq_file *m, void *v)
405{
406}
407
408const struct seq_operations cpuinfo_op = {
409 .start =c_start,
410 .next = c_next,
411 .stop = c_stop,
412 .show = show_cpuinfo,
413};
414
415extern int stop_a_enabled;
416
417void sun_do_break(void)
418{
419 if (!stop_a_enabled)
420 return;
421
422 prom_printf("\n");
423 flush_user_windows();
424
425 prom_cmdline();
426}
427
428int stop_a_enabled = 1;
diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c
new file mode 100644
index 000000000000..ba5b09ad6666
--- /dev/null
+++ b/arch/sparc/kernel/signal32.c
@@ -0,0 +1,899 @@
1/* arch/sparc64/kernel/signal32.c
2 *
3 * Copyright (C) 1991, 1992 Linus Torvalds
4 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
6 * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
7 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
8 */
9
10#include <linux/sched.h>
11#include <linux/kernel.h>
12#include <linux/signal.h>
13#include <linux/errno.h>
14#include <linux/wait.h>
15#include <linux/ptrace.h>
16#include <linux/unistd.h>
17#include <linux/mm.h>
18#include <linux/tty.h>
19#include <linux/binfmts.h>
20#include <linux/compat.h>
21#include <linux/bitops.h>
22#include <linux/tracehook.h>
23
24#include <asm/uaccess.h>
25#include <asm/ptrace.h>
26#include <asm/pgtable.h>
27#include <asm/psrcompat.h>
28#include <asm/fpumacro.h>
29#include <asm/visasm.h>
30#include <asm/compat_signal.h>
31
32#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
33
34/* This magic should be in g_upper[0] for all upper parts
35 * to be valid.
36 */
37#define SIGINFO_EXTRA_V8PLUS_MAGIC 0x130e269
38typedef struct {
39 unsigned int g_upper[8];
40 unsigned int o_upper[8];
41 unsigned int asi;
42} siginfo_extra_v8plus_t;
43
44struct signal_frame32 {
45 struct sparc_stackf32 ss;
46 __siginfo32_t info;
47 /* __siginfo_fpu32_t * */ u32 fpu_save;
48 unsigned int insns[2];
49 unsigned int extramask[_COMPAT_NSIG_WORDS - 1];
50 unsigned int extra_size; /* Should be sizeof(siginfo_extra_v8plus_t) */
51 /* Only valid if (info.si_regs.psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS */
52 siginfo_extra_v8plus_t v8plus;
53 __siginfo_fpu_t fpu_state;
54};
55
56typedef struct compat_siginfo{
57 int si_signo;
58 int si_errno;
59 int si_code;
60
61 union {
62 int _pad[SI_PAD_SIZE32];
63
64 /* kill() */
65 struct {
66 compat_pid_t _pid; /* sender's pid */
67 unsigned int _uid; /* sender's uid */
68 } _kill;
69
70 /* POSIX.1b timers */
71 struct {
72 compat_timer_t _tid; /* timer id */
73 int _overrun; /* overrun count */
74 compat_sigval_t _sigval; /* same as below */
75 int _sys_private; /* not to be passed to user */
76 } _timer;
77
78 /* POSIX.1b signals */
79 struct {
80 compat_pid_t _pid; /* sender's pid */
81 unsigned int _uid; /* sender's uid */
82 compat_sigval_t _sigval;
83 } _rt;
84
85 /* SIGCHLD */
86 struct {
87 compat_pid_t _pid; /* which child */
88 unsigned int _uid; /* sender's uid */
89 int _status; /* exit code */
90 compat_clock_t _utime;
91 compat_clock_t _stime;
92 } _sigchld;
93
94 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */
95 struct {
96 u32 _addr; /* faulting insn/memory ref. */
97 int _trapno;
98 } _sigfault;
99
100 /* SIGPOLL */
101 struct {
102 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
103 int _fd;
104 } _sigpoll;
105 } _sifields;
106}compat_siginfo_t;
107
108struct rt_signal_frame32 {
109 struct sparc_stackf32 ss;
110 compat_siginfo_t info;
111 struct pt_regs32 regs;
112 compat_sigset_t mask;
113 /* __siginfo_fpu32_t * */ u32 fpu_save;
114 unsigned int insns[2];
115 stack_t32 stack;
116 unsigned int extra_size; /* Should be sizeof(siginfo_extra_v8plus_t) */
117 /* Only valid if (regs.psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS */
118 siginfo_extra_v8plus_t v8plus;
119 __siginfo_fpu_t fpu_state;
120};
121
122/* Align macros */
123#define SF_ALIGNEDSZ (((sizeof(struct signal_frame32) + 7) & (~7)))
124#define RT_ALIGNEDSZ (((sizeof(struct rt_signal_frame32) + 7) & (~7)))
125
126int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
127{
128 int err;
129
130 if (!access_ok(VERIFY_WRITE, to, sizeof(compat_siginfo_t)))
131 return -EFAULT;
132
133 /* If you change siginfo_t structure, please be sure
134 this code is fixed accordingly.
135 It should never copy any pad contained in the structure
136 to avoid security leaks, but must copy the generic
137 3 ints plus the relevant union member.
138 This routine must convert siginfo from 64bit to 32bit as well
139 at the same time. */
140 err = __put_user(from->si_signo, &to->si_signo);
141 err |= __put_user(from->si_errno, &to->si_errno);
142 err |= __put_user((short)from->si_code, &to->si_code);
143 if (from->si_code < 0)
144 err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, SI_PAD_SIZE);
145 else {
146 switch (from->si_code >> 16) {
147 case __SI_TIMER >> 16:
148 err |= __put_user(from->si_tid, &to->si_tid);
149 err |= __put_user(from->si_overrun, &to->si_overrun);
150 err |= __put_user(from->si_int, &to->si_int);
151 break;
152 case __SI_CHLD >> 16:
153 err |= __put_user(from->si_utime, &to->si_utime);
154 err |= __put_user(from->si_stime, &to->si_stime);
155 err |= __put_user(from->si_status, &to->si_status);
156 default:
157 err |= __put_user(from->si_pid, &to->si_pid);
158 err |= __put_user(from->si_uid, &to->si_uid);
159 break;
160 case __SI_FAULT >> 16:
161 err |= __put_user(from->si_trapno, &to->si_trapno);
162 err |= __put_user((unsigned long)from->si_addr, &to->si_addr);
163 break;
164 case __SI_POLL >> 16:
165 err |= __put_user(from->si_band, &to->si_band);
166 err |= __put_user(from->si_fd, &to->si_fd);
167 break;
168 case __SI_RT >> 16: /* This is not generated by the kernel as of now. */
169 case __SI_MESGQ >> 16:
170 err |= __put_user(from->si_pid, &to->si_pid);
171 err |= __put_user(from->si_uid, &to->si_uid);
172 err |= __put_user(from->si_int, &to->si_int);
173 break;
174 }
175 }
176 return err;
177}
178
179/* CAUTION: This is just a very minimalist implementation for the
180 * sake of compat_sys_rt_sigqueueinfo()
181 */
182int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
183{
184 if (!access_ok(VERIFY_WRITE, from, sizeof(compat_siginfo_t)))
185 return -EFAULT;
186
187 if (copy_from_user(to, from, 3*sizeof(int)) ||
188 copy_from_user(to->_sifields._pad, from->_sifields._pad,
189 SI_PAD_SIZE))
190 return -EFAULT;
191
192 return 0;
193}
194
195static int restore_fpu_state32(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
196{
197 unsigned long *fpregs = current_thread_info()->fpregs;
198 unsigned long fprs;
199 int err;
200
201 err = __get_user(fprs, &fpu->si_fprs);
202 fprs_write(0);
203 regs->tstate &= ~TSTATE_PEF;
204 if (fprs & FPRS_DL)
205 err |= copy_from_user(fpregs, &fpu->si_float_regs[0], (sizeof(unsigned int) * 32));
206 if (fprs & FPRS_DU)
207 err |= copy_from_user(fpregs+16, &fpu->si_float_regs[32], (sizeof(unsigned int) * 32));
208 err |= __get_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
209 err |= __get_user(current_thread_info()->gsr[0], &fpu->si_gsr);
210 current_thread_info()->fpsaved[0] |= fprs;
211 return err;
212}
213
214void do_sigreturn32(struct pt_regs *regs)
215{
216 struct signal_frame32 __user *sf;
217 unsigned int psr;
218 unsigned pc, npc, fpu_save;
219 sigset_t set;
220 unsigned seta[_COMPAT_NSIG_WORDS];
221 int err, i;
222
223 /* Always make any pending restarted system calls return -EINTR */
224 current_thread_info()->restart_block.fn = do_no_restart_syscall;
225
226 synchronize_user_stack();
227
228 regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
229 sf = (struct signal_frame32 __user *) regs->u_regs[UREG_FP];
230
231 /* 1. Make sure we are not getting garbage from the user */
232 if (!access_ok(VERIFY_READ, sf, sizeof(*sf)) ||
233 (((unsigned long) sf) & 3))
234 goto segv;
235
236 get_user(pc, &sf->info.si_regs.pc);
237 __get_user(npc, &sf->info.si_regs.npc);
238
239 if ((pc | npc) & 3)
240 goto segv;
241
242 if (test_thread_flag(TIF_32BIT)) {
243 pc &= 0xffffffff;
244 npc &= 0xffffffff;
245 }
246 regs->tpc = pc;
247 regs->tnpc = npc;
248
249 /* 2. Restore the state */
250 err = __get_user(regs->y, &sf->info.si_regs.y);
251 err |= __get_user(psr, &sf->info.si_regs.psr);
252
253 for (i = UREG_G1; i <= UREG_I7; i++)
254 err |= __get_user(regs->u_regs[i], &sf->info.si_regs.u_regs[i]);
255 if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS) {
256 err |= __get_user(i, &sf->v8plus.g_upper[0]);
257 if (i == SIGINFO_EXTRA_V8PLUS_MAGIC) {
258 unsigned long asi;
259
260 for (i = UREG_G1; i <= UREG_I7; i++)
261 err |= __get_user(((u32 *)regs->u_regs)[2*i], &sf->v8plus.g_upper[i]);
262 err |= __get_user(asi, &sf->v8plus.asi);
263 regs->tstate &= ~TSTATE_ASI;
264 regs->tstate |= ((asi & 0xffUL) << 24UL);
265 }
266 }
267
268 /* User can only change condition codes in %tstate. */
269 regs->tstate &= ~(TSTATE_ICC|TSTATE_XCC);
270 regs->tstate |= psr_to_tstate_icc(psr);
271
272 /* Prevent syscall restart. */
273 pt_regs_clear_syscall(regs);
274
275 err |= __get_user(fpu_save, &sf->fpu_save);
276 if (fpu_save)
277 err |= restore_fpu_state32(regs, &sf->fpu_state);
278 err |= __get_user(seta[0], &sf->info.si_mask);
279 err |= copy_from_user(seta+1, &sf->extramask,
280 (_COMPAT_NSIG_WORDS - 1) * sizeof(unsigned int));
281 if (err)
282 goto segv;
283 switch (_NSIG_WORDS) {
284 case 4: set.sig[3] = seta[6] + (((long)seta[7]) << 32);
285 case 3: set.sig[2] = seta[4] + (((long)seta[5]) << 32);
286 case 2: set.sig[1] = seta[2] + (((long)seta[3]) << 32);
287 case 1: set.sig[0] = seta[0] + (((long)seta[1]) << 32);
288 }
289 sigdelsetmask(&set, ~_BLOCKABLE);
290 spin_lock_irq(&current->sighand->siglock);
291 current->blocked = set;
292 recalc_sigpending();
293 spin_unlock_irq(&current->sighand->siglock);
294 return;
295
296segv:
297 force_sig(SIGSEGV, current);
298}
299
300asmlinkage void do_rt_sigreturn32(struct pt_regs *regs)
301{
302 struct rt_signal_frame32 __user *sf;
303 unsigned int psr, pc, npc, fpu_save, u_ss_sp;
304 mm_segment_t old_fs;
305 sigset_t set;
306 compat_sigset_t seta;
307 stack_t st;
308 int err, i;
309
310 /* Always make any pending restarted system calls return -EINTR */
311 current_thread_info()->restart_block.fn = do_no_restart_syscall;
312
313 synchronize_user_stack();
314 regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
315 sf = (struct rt_signal_frame32 __user *) regs->u_regs[UREG_FP];
316
317 /* 1. Make sure we are not getting garbage from the user */
318 if (!access_ok(VERIFY_READ, sf, sizeof(*sf)) ||
319 (((unsigned long) sf) & 3))
320 goto segv;
321
322 get_user(pc, &sf->regs.pc);
323 __get_user(npc, &sf->regs.npc);
324
325 if ((pc | npc) & 3)
326 goto segv;
327
328 if (test_thread_flag(TIF_32BIT)) {
329 pc &= 0xffffffff;
330 npc &= 0xffffffff;
331 }
332 regs->tpc = pc;
333 regs->tnpc = npc;
334
335 /* 2. Restore the state */
336 err = __get_user(regs->y, &sf->regs.y);
337 err |= __get_user(psr, &sf->regs.psr);
338
339 for (i = UREG_G1; i <= UREG_I7; i++)
340 err |= __get_user(regs->u_regs[i], &sf->regs.u_regs[i]);
341 if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS) {
342 err |= __get_user(i, &sf->v8plus.g_upper[0]);
343 if (i == SIGINFO_EXTRA_V8PLUS_MAGIC) {
344 unsigned long asi;
345
346 for (i = UREG_G1; i <= UREG_I7; i++)
347 err |= __get_user(((u32 *)regs->u_regs)[2*i], &sf->v8plus.g_upper[i]);
348 err |= __get_user(asi, &sf->v8plus.asi);
349 regs->tstate &= ~TSTATE_ASI;
350 regs->tstate |= ((asi & 0xffUL) << 24UL);
351 }
352 }
353
354 /* User can only change condition codes in %tstate. */
355 regs->tstate &= ~(TSTATE_ICC|TSTATE_XCC);
356 regs->tstate |= psr_to_tstate_icc(psr);
357
358 /* Prevent syscall restart. */
359 pt_regs_clear_syscall(regs);
360
361 err |= __get_user(fpu_save, &sf->fpu_save);
362 if (fpu_save)
363 err |= restore_fpu_state32(regs, &sf->fpu_state);
364 err |= copy_from_user(&seta, &sf->mask, sizeof(compat_sigset_t));
365 err |= __get_user(u_ss_sp, &sf->stack.ss_sp);
366 st.ss_sp = compat_ptr(u_ss_sp);
367 err |= __get_user(st.ss_flags, &sf->stack.ss_flags);
368 err |= __get_user(st.ss_size, &sf->stack.ss_size);
369 if (err)
370 goto segv;
371
372 /* It is more difficult to avoid calling this function than to
373 call it and ignore errors. */
374 old_fs = get_fs();
375 set_fs(KERNEL_DS);
376 do_sigaltstack((stack_t __user *) &st, NULL, (unsigned long)sf);
377 set_fs(old_fs);
378
379 switch (_NSIG_WORDS) {
380 case 4: set.sig[3] = seta.sig[6] + (((long)seta.sig[7]) << 32);
381 case 3: set.sig[2] = seta.sig[4] + (((long)seta.sig[5]) << 32);
382 case 2: set.sig[1] = seta.sig[2] + (((long)seta.sig[3]) << 32);
383 case 1: set.sig[0] = seta.sig[0] + (((long)seta.sig[1]) << 32);
384 }
385 sigdelsetmask(&set, ~_BLOCKABLE);
386 spin_lock_irq(&current->sighand->siglock);
387 current->blocked = set;
388 recalc_sigpending();
389 spin_unlock_irq(&current->sighand->siglock);
390 return;
391segv:
392 force_sig(SIGSEGV, current);
393}
394
395/* Checks if the fp is valid */
396static int invalid_frame_pointer(void __user *fp, int fplen)
397{
398 if ((((unsigned long) fp) & 7) || ((unsigned long)fp) > 0x100000000ULL - fplen)
399 return 1;
400 return 0;
401}
402
403static void __user *get_sigframe(struct sigaction *sa, struct pt_regs *regs, unsigned long framesize)
404{
405 unsigned long sp;
406
407 regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
408 sp = regs->u_regs[UREG_FP];
409
410 /*
411 * If we are on the alternate signal stack and would overflow it, don't.
412 * Return an always-bogus address instead so we will die with SIGSEGV.
413 */
414 if (on_sig_stack(sp) && !likely(on_sig_stack(sp - framesize)))
415 return (void __user *) -1L;
416
417 /* This is the X/Open sanctioned signal stack switching. */
418 if (sa->sa_flags & SA_ONSTACK) {
419 if (sas_ss_flags(sp) == 0)
420 sp = current->sas_ss_sp + current->sas_ss_size;
421 }
422
423 /* Always align the stack frame. This handles two cases. First,
424 * sigaltstack need not be mindful of platform specific stack
425 * alignment. Second, if we took this signal because the stack
426 * is not aligned properly, we'd like to take the signal cleanly
427 * and report that.
428 */
429 sp &= ~7UL;
430
431 return (void __user *)(sp - framesize);
432}
433
434static int save_fpu_state32(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
435{
436 unsigned long *fpregs = current_thread_info()->fpregs;
437 unsigned long fprs;
438 int err = 0;
439
440 fprs = current_thread_info()->fpsaved[0];
441 if (fprs & FPRS_DL)
442 err |= copy_to_user(&fpu->si_float_regs[0], fpregs,
443 (sizeof(unsigned int) * 32));
444 if (fprs & FPRS_DU)
445 err |= copy_to_user(&fpu->si_float_regs[32], fpregs+16,
446 (sizeof(unsigned int) * 32));
447 err |= __put_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
448 err |= __put_user(current_thread_info()->gsr[0], &fpu->si_gsr);
449 err |= __put_user(fprs, &fpu->si_fprs);
450
451 return err;
452}
453
454static void setup_frame32(struct k_sigaction *ka, struct pt_regs *regs,
455 int signo, sigset_t *oldset)
456{
457 struct signal_frame32 __user *sf;
458 int sigframe_size;
459 u32 psr;
460 int i, err;
461 unsigned int seta[_COMPAT_NSIG_WORDS];
462
463 /* 1. Make sure everything is clean */
464 synchronize_user_stack();
465 save_and_clear_fpu();
466
467 sigframe_size = SF_ALIGNEDSZ;
468 if (!(current_thread_info()->fpsaved[0] & FPRS_FEF))
469 sigframe_size -= sizeof(__siginfo_fpu_t);
470
471 sf = (struct signal_frame32 __user *)
472 get_sigframe(&ka->sa, regs, sigframe_size);
473
474 if (invalid_frame_pointer(sf, sigframe_size))
475 goto sigill;
476
477 if (get_thread_wsaved() != 0)
478 goto sigill;
479
480 /* 2. Save the current process state */
481 if (test_thread_flag(TIF_32BIT)) {
482 regs->tpc &= 0xffffffff;
483 regs->tnpc &= 0xffffffff;
484 }
485 err = put_user(regs->tpc, &sf->info.si_regs.pc);
486 err |= __put_user(regs->tnpc, &sf->info.si_regs.npc);
487 err |= __put_user(regs->y, &sf->info.si_regs.y);
488 psr = tstate_to_psr(regs->tstate);
489 if (current_thread_info()->fpsaved[0] & FPRS_FEF)
490 psr |= PSR_EF;
491 err |= __put_user(psr, &sf->info.si_regs.psr);
492 for (i = 0; i < 16; i++)
493 err |= __put_user(regs->u_regs[i], &sf->info.si_regs.u_regs[i]);
494 err |= __put_user(sizeof(siginfo_extra_v8plus_t), &sf->extra_size);
495 err |= __put_user(SIGINFO_EXTRA_V8PLUS_MAGIC, &sf->v8plus.g_upper[0]);
496 for (i = 1; i < 16; i++)
497 err |= __put_user(((u32 *)regs->u_regs)[2*i],
498 &sf->v8plus.g_upper[i]);
499 err |= __put_user((regs->tstate & TSTATE_ASI) >> 24UL,
500 &sf->v8plus.asi);
501
502 if (psr & PSR_EF) {
503 err |= save_fpu_state32(regs, &sf->fpu_state);
504 err |= __put_user((u64)&sf->fpu_state, &sf->fpu_save);
505 } else {
506 err |= __put_user(0, &sf->fpu_save);
507 }
508
509 switch (_NSIG_WORDS) {
510 case 4: seta[7] = (oldset->sig[3] >> 32);
511 seta[6] = oldset->sig[3];
512 case 3: seta[5] = (oldset->sig[2] >> 32);
513 seta[4] = oldset->sig[2];
514 case 2: seta[3] = (oldset->sig[1] >> 32);
515 seta[2] = oldset->sig[1];
516 case 1: seta[1] = (oldset->sig[0] >> 32);
517 seta[0] = oldset->sig[0];
518 }
519 err |= __put_user(seta[0], &sf->info.si_mask);
520 err |= __copy_to_user(sf->extramask, seta + 1,
521 (_COMPAT_NSIG_WORDS - 1) * sizeof(unsigned int));
522
523 err |= copy_in_user((u32 __user *)sf,
524 (u32 __user *)(regs->u_regs[UREG_FP]),
525 sizeof(struct reg_window32));
526
527 if (err)
528 goto sigsegv;
529
530 /* 3. signal handler back-trampoline and parameters */
531 regs->u_regs[UREG_FP] = (unsigned long) sf;
532 regs->u_regs[UREG_I0] = signo;
533 regs->u_regs[UREG_I1] = (unsigned long) &sf->info;
534 regs->u_regs[UREG_I2] = (unsigned long) &sf->info;
535
536 /* 4. signal handler */
537 regs->tpc = (unsigned long) ka->sa.sa_handler;
538 regs->tnpc = (regs->tpc + 4);
539 if (test_thread_flag(TIF_32BIT)) {
540 regs->tpc &= 0xffffffff;
541 regs->tnpc &= 0xffffffff;
542 }
543
544 /* 5. return to kernel instructions */
545 if (ka->ka_restorer) {
546 regs->u_regs[UREG_I7] = (unsigned long)ka->ka_restorer;
547 } else {
548 /* Flush instruction space. */
549 unsigned long address = ((unsigned long)&(sf->insns[0]));
550 pgd_t *pgdp = pgd_offset(current->mm, address);
551 pud_t *pudp = pud_offset(pgdp, address);
552 pmd_t *pmdp = pmd_offset(pudp, address);
553 pte_t *ptep;
554 pte_t pte;
555
556 regs->u_regs[UREG_I7] = (unsigned long) (&(sf->insns[0]) - 2);
557
558 err = __put_user(0x821020d8, &sf->insns[0]); /*mov __NR_sigreturn, %g1*/
559 err |= __put_user(0x91d02010, &sf->insns[1]); /*t 0x10*/
560 if (err)
561 goto sigsegv;
562
563 preempt_disable();
564 ptep = pte_offset_map(pmdp, address);
565 pte = *ptep;
566 if (pte_present(pte)) {
567 unsigned long page = (unsigned long)
568 page_address(pte_page(pte));
569
570 wmb();
571 __asm__ __volatile__("flush %0 + %1"
572 : /* no outputs */
573 : "r" (page),
574 "r" (address & (PAGE_SIZE - 1))
575 : "memory");
576 }
577 pte_unmap(ptep);
578 preempt_enable();
579 }
580 return;
581
582sigill:
583 do_exit(SIGILL);
584sigsegv:
585 force_sigsegv(signo, current);
586}
587
588static void setup_rt_frame32(struct k_sigaction *ka, struct pt_regs *regs,
589 unsigned long signr, sigset_t *oldset,
590 siginfo_t *info)
591{
592 struct rt_signal_frame32 __user *sf;
593 int sigframe_size;
594 u32 psr;
595 int i, err;
596 compat_sigset_t seta;
597
598 /* 1. Make sure everything is clean */
599 synchronize_user_stack();
600 save_and_clear_fpu();
601
602 sigframe_size = RT_ALIGNEDSZ;
603 if (!(current_thread_info()->fpsaved[0] & FPRS_FEF))
604 sigframe_size -= sizeof(__siginfo_fpu_t);
605
606 sf = (struct rt_signal_frame32 __user *)
607 get_sigframe(&ka->sa, regs, sigframe_size);
608
609 if (invalid_frame_pointer(sf, sigframe_size))
610 goto sigill;
611
612 if (get_thread_wsaved() != 0)
613 goto sigill;
614
615 /* 2. Save the current process state */
616 if (test_thread_flag(TIF_32BIT)) {
617 regs->tpc &= 0xffffffff;
618 regs->tnpc &= 0xffffffff;
619 }
620 err = put_user(regs->tpc, &sf->regs.pc);
621 err |= __put_user(regs->tnpc, &sf->regs.npc);
622 err |= __put_user(regs->y, &sf->regs.y);
623 psr = tstate_to_psr(regs->tstate);
624 if (current_thread_info()->fpsaved[0] & FPRS_FEF)
625 psr |= PSR_EF;
626 err |= __put_user(psr, &sf->regs.psr);
627 for (i = 0; i < 16; i++)
628 err |= __put_user(regs->u_regs[i], &sf->regs.u_regs[i]);
629 err |= __put_user(sizeof(siginfo_extra_v8plus_t), &sf->extra_size);
630 err |= __put_user(SIGINFO_EXTRA_V8PLUS_MAGIC, &sf->v8plus.g_upper[0]);
631 for (i = 1; i < 16; i++)
632 err |= __put_user(((u32 *)regs->u_regs)[2*i],
633 &sf->v8plus.g_upper[i]);
634 err |= __put_user((regs->tstate & TSTATE_ASI) >> 24UL,
635 &sf->v8plus.asi);
636
637 if (psr & PSR_EF) {
638 err |= save_fpu_state32(regs, &sf->fpu_state);
639 err |= __put_user((u64)&sf->fpu_state, &sf->fpu_save);
640 } else {
641 err |= __put_user(0, &sf->fpu_save);
642 }
643
644 /* Update the siginfo structure. */
645 err |= copy_siginfo_to_user32(&sf->info, info);
646
647 /* Setup sigaltstack */
648 err |= __put_user(current->sas_ss_sp, &sf->stack.ss_sp);
649 err |= __put_user(sas_ss_flags(regs->u_regs[UREG_FP]), &sf->stack.ss_flags);
650 err |= __put_user(current->sas_ss_size, &sf->stack.ss_size);
651
652 switch (_NSIG_WORDS) {
653 case 4: seta.sig[7] = (oldset->sig[3] >> 32);
654 seta.sig[6] = oldset->sig[3];
655 case 3: seta.sig[5] = (oldset->sig[2] >> 32);
656 seta.sig[4] = oldset->sig[2];
657 case 2: seta.sig[3] = (oldset->sig[1] >> 32);
658 seta.sig[2] = oldset->sig[1];
659 case 1: seta.sig[1] = (oldset->sig[0] >> 32);
660 seta.sig[0] = oldset->sig[0];
661 }
662 err |= __copy_to_user(&sf->mask, &seta, sizeof(compat_sigset_t));
663
664 err |= copy_in_user((u32 __user *)sf,
665 (u32 __user *)(regs->u_regs[UREG_FP]),
666 sizeof(struct reg_window32));
667 if (err)
668 goto sigsegv;
669
670 /* 3. signal handler back-trampoline and parameters */
671 regs->u_regs[UREG_FP] = (unsigned long) sf;
672 regs->u_regs[UREG_I0] = signr;
673 regs->u_regs[UREG_I1] = (unsigned long) &sf->info;
674 regs->u_regs[UREG_I2] = (unsigned long) &sf->regs;
675
676 /* 4. signal handler */
677 regs->tpc = (unsigned long) ka->sa.sa_handler;
678 regs->tnpc = (regs->tpc + 4);
679 if (test_thread_flag(TIF_32BIT)) {
680 regs->tpc &= 0xffffffff;
681 regs->tnpc &= 0xffffffff;
682 }
683
684 /* 5. return to kernel instructions */
685 if (ka->ka_restorer)
686 regs->u_regs[UREG_I7] = (unsigned long)ka->ka_restorer;
687 else {
688 /* Flush instruction space. */
689 unsigned long address = ((unsigned long)&(sf->insns[0]));
690 pgd_t *pgdp = pgd_offset(current->mm, address);
691 pud_t *pudp = pud_offset(pgdp, address);
692 pmd_t *pmdp = pmd_offset(pudp, address);
693 pte_t *ptep;
694
695 regs->u_regs[UREG_I7] = (unsigned long) (&(sf->insns[0]) - 2);
696
697 /* mov __NR_rt_sigreturn, %g1 */
698 err |= __put_user(0x82102065, &sf->insns[0]);
699
700 /* t 0x10 */
701 err |= __put_user(0x91d02010, &sf->insns[1]);
702 if (err)
703 goto sigsegv;
704
705 preempt_disable();
706 ptep = pte_offset_map(pmdp, address);
707 if (pte_present(*ptep)) {
708 unsigned long page = (unsigned long)
709 page_address(pte_page(*ptep));
710
711 wmb();
712 __asm__ __volatile__("flush %0 + %1"
713 : /* no outputs */
714 : "r" (page),
715 "r" (address & (PAGE_SIZE - 1))
716 : "memory");
717 }
718 pte_unmap(ptep);
719 preempt_enable();
720 }
721 return;
722
723sigill:
724 do_exit(SIGILL);
725sigsegv:
726 force_sigsegv(signr, current);
727}
728
729static inline void handle_signal32(unsigned long signr, struct k_sigaction *ka,
730 siginfo_t *info,
731 sigset_t *oldset, struct pt_regs *regs)
732{
733 if (ka->sa.sa_flags & SA_SIGINFO)
734 setup_rt_frame32(ka, regs, signr, oldset, info);
735 else
736 setup_frame32(ka, regs, signr, oldset);
737
738 spin_lock_irq(&current->sighand->siglock);
739 sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
740 if (!(ka->sa.sa_flags & SA_NOMASK))
741 sigaddset(&current->blocked,signr);
742 recalc_sigpending();
743 spin_unlock_irq(&current->sighand->siglock);
744}
745
746static inline void syscall_restart32(unsigned long orig_i0, struct pt_regs *regs,
747 struct sigaction *sa)
748{
749 switch (regs->u_regs[UREG_I0]) {
750 case ERESTART_RESTARTBLOCK:
751 case ERESTARTNOHAND:
752 no_system_call_restart:
753 regs->u_regs[UREG_I0] = EINTR;
754 regs->tstate |= TSTATE_ICARRY;
755 break;
756 case ERESTARTSYS:
757 if (!(sa->sa_flags & SA_RESTART))
758 goto no_system_call_restart;
759 /* fallthrough */
760 case ERESTARTNOINTR:
761 regs->u_regs[UREG_I0] = orig_i0;
762 regs->tpc -= 4;
763 regs->tnpc -= 4;
764 }
765}
766
767/* Note that 'init' is a special process: it doesn't get signals it doesn't
768 * want to handle. Thus you cannot kill init even with a SIGKILL even by
769 * mistake.
770 */
771void do_signal32(sigset_t *oldset, struct pt_regs * regs,
772 int restart_syscall, unsigned long orig_i0)
773{
774 struct k_sigaction ka;
775 siginfo_t info;
776 int signr;
777
778 signr = get_signal_to_deliver(&info, &ka, regs, NULL);
779
780 /* If the debugger messes with the program counter, it clears
781 * the "in syscall" bit, directing us to not perform a syscall
782 * restart.
783 */
784 if (restart_syscall && !pt_regs_is_syscall(regs))
785 restart_syscall = 0;
786
787 if (signr > 0) {
788 if (restart_syscall)
789 syscall_restart32(orig_i0, regs, &ka.sa);
790 handle_signal32(signr, &ka, &info, oldset, regs);
791
792 /* A signal was successfully delivered; the saved
793 * sigmask will have been stored in the signal frame,
794 * and will be restored by sigreturn, so we can simply
795 * clear the TS_RESTORE_SIGMASK flag.
796 */
797 current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
798
799 tracehook_signal_handler(signr, &info, &ka, regs, 0);
800 return;
801 }
802 if (restart_syscall &&
803 (regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
804 regs->u_regs[UREG_I0] == ERESTARTSYS ||
805 regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
806 /* replay the system call when we are done */
807 regs->u_regs[UREG_I0] = orig_i0;
808 regs->tpc -= 4;
809 regs->tnpc -= 4;
810 }
811 if (restart_syscall &&
812 regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
813 regs->u_regs[UREG_G1] = __NR_restart_syscall;
814 regs->tpc -= 4;
815 regs->tnpc -= 4;
816 }
817
818 /* If there's no signal to deliver, we just put the saved sigmask
819 * back
820 */
821 if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
822 current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
823 sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
824 }
825}
826
827struct sigstack32 {
828 u32 the_stack;
829 int cur_status;
830};
831
832asmlinkage int do_sys32_sigstack(u32 u_ssptr, u32 u_ossptr, unsigned long sp)
833{
834 struct sigstack32 __user *ssptr =
835 (struct sigstack32 __user *)((unsigned long)(u_ssptr));
836 struct sigstack32 __user *ossptr =
837 (struct sigstack32 __user *)((unsigned long)(u_ossptr));
838 int ret = -EFAULT;
839
840 /* First see if old state is wanted. */
841 if (ossptr) {
842 if (put_user(current->sas_ss_sp + current->sas_ss_size,
843 &ossptr->the_stack) ||
844 __put_user(on_sig_stack(sp), &ossptr->cur_status))
845 goto out;
846 }
847
848 /* Now see if we want to update the new state. */
849 if (ssptr) {
850 u32 ss_sp;
851
852 if (get_user(ss_sp, &ssptr->the_stack))
853 goto out;
854
855 /* If the current stack was set with sigaltstack, don't
856 * swap stacks while we are on it.
857 */
858 ret = -EPERM;
859 if (current->sas_ss_sp && on_sig_stack(sp))
860 goto out;
861
862 /* Since we don't know the extent of the stack, and we don't
863 * track onstack-ness, but rather calculate it, we must
864 * presume a size. Ho hum this interface is lossy.
865 */
866 current->sas_ss_sp = (unsigned long)ss_sp - SIGSTKSZ;
867 current->sas_ss_size = SIGSTKSZ;
868 }
869
870 ret = 0;
871out:
872 return ret;
873}
874
875asmlinkage long do_sys32_sigaltstack(u32 ussa, u32 uossa, unsigned long sp)
876{
877 stack_t uss, uoss;
878 u32 u_ss_sp = 0;
879 int ret;
880 mm_segment_t old_fs;
881 stack_t32 __user *uss32 = compat_ptr(ussa);
882 stack_t32 __user *uoss32 = compat_ptr(uossa);
883
884 if (ussa && (get_user(u_ss_sp, &uss32->ss_sp) ||
885 __get_user(uss.ss_flags, &uss32->ss_flags) ||
886 __get_user(uss.ss_size, &uss32->ss_size)))
887 return -EFAULT;
888 uss.ss_sp = compat_ptr(u_ss_sp);
889 old_fs = get_fs();
890 set_fs(KERNEL_DS);
891 ret = do_sigaltstack(ussa ? (stack_t __user *) &uss : NULL,
892 uossa ? (stack_t __user *) &uoss : NULL, sp);
893 set_fs(old_fs);
894 if (!ret && uossa && (put_user(ptr_to_compat(uoss.ss_sp), &uoss32->ss_sp) ||
895 __put_user(uoss.ss_flags, &uoss32->ss_flags) ||
896 __put_user(uoss.ss_size, &uoss32->ss_size)))
897 return -EFAULT;
898 return ret;
899}
diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c
new file mode 100644
index 000000000000..ec82d76dc6f2
--- /dev/null
+++ b/arch/sparc/kernel/signal_64.c
@@ -0,0 +1,617 @@
1/*
2 * arch/sparc64/kernel/signal.c
3 *
4 * Copyright (C) 1991, 1992 Linus Torvalds
5 * Copyright (C) 1995, 2008 David S. Miller (davem@davemloft.net)
6 * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
7 * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
8 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
9 */
10
11#ifdef CONFIG_COMPAT
12#include <linux/compat.h> /* for compat_old_sigset_t */
13#endif
14#include <linux/sched.h>
15#include <linux/kernel.h>
16#include <linux/signal.h>
17#include <linux/errno.h>
18#include <linux/wait.h>
19#include <linux/ptrace.h>
20#include <linux/tracehook.h>
21#include <linux/unistd.h>
22#include <linux/mm.h>
23#include <linux/tty.h>
24#include <linux/binfmts.h>
25#include <linux/bitops.h>
26
27#include <asm/uaccess.h>
28#include <asm/ptrace.h>
29#include <asm/pgtable.h>
30#include <asm/fpumacro.h>
31#include <asm/uctx.h>
32#include <asm/siginfo.h>
33#include <asm/visasm.h>
34
35#include "entry.h"
36#include "systbls.h"
37
38#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
39
40/* {set, get}context() needed for 64-bit SparcLinux userland. */
41asmlinkage void sparc64_set_context(struct pt_regs *regs)
42{
43 struct ucontext __user *ucp = (struct ucontext __user *)
44 regs->u_regs[UREG_I0];
45 mc_gregset_t __user *grp;
46 unsigned long pc, npc, tstate;
47 unsigned long fp, i7;
48 unsigned char fenab;
49 int err;
50
51 flush_user_windows();
52 if (get_thread_wsaved() ||
53 (((unsigned long)ucp) & (sizeof(unsigned long)-1)) ||
54 (!__access_ok(ucp, sizeof(*ucp))))
55 goto do_sigsegv;
56 grp = &ucp->uc_mcontext.mc_gregs;
57 err = __get_user(pc, &((*grp)[MC_PC]));
58 err |= __get_user(npc, &((*grp)[MC_NPC]));
59 if (err || ((pc | npc) & 3))
60 goto do_sigsegv;
61 if (regs->u_regs[UREG_I1]) {
62 sigset_t set;
63
64 if (_NSIG_WORDS == 1) {
65 if (__get_user(set.sig[0], &ucp->uc_sigmask.sig[0]))
66 goto do_sigsegv;
67 } else {
68 if (__copy_from_user(&set, &ucp->uc_sigmask, sizeof(sigset_t)))
69 goto do_sigsegv;
70 }
71 sigdelsetmask(&set, ~_BLOCKABLE);
72 spin_lock_irq(&current->sighand->siglock);
73 current->blocked = set;
74 recalc_sigpending();
75 spin_unlock_irq(&current->sighand->siglock);
76 }
77 if (test_thread_flag(TIF_32BIT)) {
78 pc &= 0xffffffff;
79 npc &= 0xffffffff;
80 }
81 regs->tpc = pc;
82 regs->tnpc = npc;
83 err |= __get_user(regs->y, &((*grp)[MC_Y]));
84 err |= __get_user(tstate, &((*grp)[MC_TSTATE]));
85 regs->tstate &= ~(TSTATE_ASI | TSTATE_ICC | TSTATE_XCC);
86 regs->tstate |= (tstate & (TSTATE_ASI | TSTATE_ICC | TSTATE_XCC));
87 err |= __get_user(regs->u_regs[UREG_G1], (&(*grp)[MC_G1]));
88 err |= __get_user(regs->u_regs[UREG_G2], (&(*grp)[MC_G2]));
89 err |= __get_user(regs->u_regs[UREG_G3], (&(*grp)[MC_G3]));
90 err |= __get_user(regs->u_regs[UREG_G4], (&(*grp)[MC_G4]));
91 err |= __get_user(regs->u_regs[UREG_G5], (&(*grp)[MC_G5]));
92 err |= __get_user(regs->u_regs[UREG_G6], (&(*grp)[MC_G6]));
93
94 /* Skip %g7 as that's the thread register in userspace. */
95
96 err |= __get_user(regs->u_regs[UREG_I0], (&(*grp)[MC_O0]));
97 err |= __get_user(regs->u_regs[UREG_I1], (&(*grp)[MC_O1]));
98 err |= __get_user(regs->u_regs[UREG_I2], (&(*grp)[MC_O2]));
99 err |= __get_user(regs->u_regs[UREG_I3], (&(*grp)[MC_O3]));
100 err |= __get_user(regs->u_regs[UREG_I4], (&(*grp)[MC_O4]));
101 err |= __get_user(regs->u_regs[UREG_I5], (&(*grp)[MC_O5]));
102 err |= __get_user(regs->u_regs[UREG_I6], (&(*grp)[MC_O6]));
103 err |= __get_user(regs->u_regs[UREG_I7], (&(*grp)[MC_O7]));
104
105 err |= __get_user(fp, &(ucp->uc_mcontext.mc_fp));
106 err |= __get_user(i7, &(ucp->uc_mcontext.mc_i7));
107 err |= __put_user(fp,
108 (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[6])));
109 err |= __put_user(i7,
110 (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[7])));
111
112 err |= __get_user(fenab, &(ucp->uc_mcontext.mc_fpregs.mcfpu_enab));
113 if (fenab) {
114 unsigned long *fpregs = current_thread_info()->fpregs;
115 unsigned long fprs;
116
117 fprs_write(0);
118 err |= __get_user(fprs, &(ucp->uc_mcontext.mc_fpregs.mcfpu_fprs));
119 if (fprs & FPRS_DL)
120 err |= copy_from_user(fpregs,
121 &(ucp->uc_mcontext.mc_fpregs.mcfpu_fregs),
122 (sizeof(unsigned int) * 32));
123 if (fprs & FPRS_DU)
124 err |= copy_from_user(fpregs+16,
125 ((unsigned long __user *)&(ucp->uc_mcontext.mc_fpregs.mcfpu_fregs))+16,
126 (sizeof(unsigned int) * 32));
127 err |= __get_user(current_thread_info()->xfsr[0],
128 &(ucp->uc_mcontext.mc_fpregs.mcfpu_fsr));
129 err |= __get_user(current_thread_info()->gsr[0],
130 &(ucp->uc_mcontext.mc_fpregs.mcfpu_gsr));
131 regs->tstate &= ~TSTATE_PEF;
132 }
133 if (err)
134 goto do_sigsegv;
135
136 return;
137do_sigsegv:
138 force_sig(SIGSEGV, current);
139}
140
141asmlinkage void sparc64_get_context(struct pt_regs *regs)
142{
143 struct ucontext __user *ucp = (struct ucontext __user *)
144 regs->u_regs[UREG_I0];
145 mc_gregset_t __user *grp;
146 mcontext_t __user *mcp;
147 unsigned long fp, i7;
148 unsigned char fenab;
149 int err;
150
151 synchronize_user_stack();
152 if (get_thread_wsaved() || clear_user(ucp, sizeof(*ucp)))
153 goto do_sigsegv;
154
155#if 1
156 fenab = 0; /* IMO get_context is like any other system call, thus modifies FPU state -jj */
157#else
158 fenab = (current_thread_info()->fpsaved[0] & FPRS_FEF);
159#endif
160
161 mcp = &ucp->uc_mcontext;
162 grp = &mcp->mc_gregs;
163
164 /* Skip over the trap instruction, first. */
165 if (test_thread_flag(TIF_32BIT)) {
166 regs->tpc = (regs->tnpc & 0xffffffff);
167 regs->tnpc = (regs->tnpc + 4) & 0xffffffff;
168 } else {
169 regs->tpc = regs->tnpc;
170 regs->tnpc += 4;
171 }
172 err = 0;
173 if (_NSIG_WORDS == 1)
174 err |= __put_user(current->blocked.sig[0],
175 (unsigned long __user *)&ucp->uc_sigmask);
176 else
177 err |= __copy_to_user(&ucp->uc_sigmask, &current->blocked,
178 sizeof(sigset_t));
179
180 err |= __put_user(regs->tstate, &((*grp)[MC_TSTATE]));
181 err |= __put_user(regs->tpc, &((*grp)[MC_PC]));
182 err |= __put_user(regs->tnpc, &((*grp)[MC_NPC]));
183 err |= __put_user(regs->y, &((*grp)[MC_Y]));
184 err |= __put_user(regs->u_regs[UREG_G1], &((*grp)[MC_G1]));
185 err |= __put_user(regs->u_regs[UREG_G2], &((*grp)[MC_G2]));
186 err |= __put_user(regs->u_regs[UREG_G3], &((*grp)[MC_G3]));
187 err |= __put_user(regs->u_regs[UREG_G4], &((*grp)[MC_G4]));
188 err |= __put_user(regs->u_regs[UREG_G5], &((*grp)[MC_G5]));
189 err |= __put_user(regs->u_regs[UREG_G6], &((*grp)[MC_G6]));
190 err |= __put_user(regs->u_regs[UREG_G7], &((*grp)[MC_G7]));
191 err |= __put_user(regs->u_regs[UREG_I0], &((*grp)[MC_O0]));
192 err |= __put_user(regs->u_regs[UREG_I1], &((*grp)[MC_O1]));
193 err |= __put_user(regs->u_regs[UREG_I2], &((*grp)[MC_O2]));
194 err |= __put_user(regs->u_regs[UREG_I3], &((*grp)[MC_O3]));
195 err |= __put_user(regs->u_regs[UREG_I4], &((*grp)[MC_O4]));
196 err |= __put_user(regs->u_regs[UREG_I5], &((*grp)[MC_O5]));
197 err |= __put_user(regs->u_regs[UREG_I6], &((*grp)[MC_O6]));
198 err |= __put_user(regs->u_regs[UREG_I7], &((*grp)[MC_O7]));
199
200 err |= __get_user(fp,
201 (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[6])));
202 err |= __get_user(i7,
203 (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[7])));
204 err |= __put_user(fp, &(mcp->mc_fp));
205 err |= __put_user(i7, &(mcp->mc_i7));
206
207 err |= __put_user(fenab, &(mcp->mc_fpregs.mcfpu_enab));
208 if (fenab) {
209 unsigned long *fpregs = current_thread_info()->fpregs;
210 unsigned long fprs;
211
212 fprs = current_thread_info()->fpsaved[0];
213 if (fprs & FPRS_DL)
214 err |= copy_to_user(&(mcp->mc_fpregs.mcfpu_fregs), fpregs,
215 (sizeof(unsigned int) * 32));
216 if (fprs & FPRS_DU)
217 err |= copy_to_user(
218 ((unsigned long __user *)&(mcp->mc_fpregs.mcfpu_fregs))+16, fpregs+16,
219 (sizeof(unsigned int) * 32));
220 err |= __put_user(current_thread_info()->xfsr[0], &(mcp->mc_fpregs.mcfpu_fsr));
221 err |= __put_user(current_thread_info()->gsr[0], &(mcp->mc_fpregs.mcfpu_gsr));
222 err |= __put_user(fprs, &(mcp->mc_fpregs.mcfpu_fprs));
223 }
224 if (err)
225 goto do_sigsegv;
226
227 return;
228do_sigsegv:
229 force_sig(SIGSEGV, current);
230}
231
232struct rt_signal_frame {
233 struct sparc_stackf ss;
234 siginfo_t info;
235 struct pt_regs regs;
236 __siginfo_fpu_t __user *fpu_save;
237 stack_t stack;
238 sigset_t mask;
239 __siginfo_fpu_t fpu_state;
240};
241
242static long _sigpause_common(old_sigset_t set)
243{
244 set &= _BLOCKABLE;
245 spin_lock_irq(&current->sighand->siglock);
246 current->saved_sigmask = current->blocked;
247 siginitset(&current->blocked, set);
248 recalc_sigpending();
249 spin_unlock_irq(&current->sighand->siglock);
250
251 current->state = TASK_INTERRUPTIBLE;
252 schedule();
253
254 set_restore_sigmask();
255
256 return -ERESTARTNOHAND;
257}
258
259asmlinkage long sys_sigpause(unsigned int set)
260{
261 return _sigpause_common(set);
262}
263
264asmlinkage long sys_sigsuspend(old_sigset_t set)
265{
266 return _sigpause_common(set);
267}
268
269static inline int
270restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
271{
272 unsigned long *fpregs = current_thread_info()->fpregs;
273 unsigned long fprs;
274 int err;
275
276 err = __get_user(fprs, &fpu->si_fprs);
277 fprs_write(0);
278 regs->tstate &= ~TSTATE_PEF;
279 if (fprs & FPRS_DL)
280 err |= copy_from_user(fpregs, &fpu->si_float_regs[0],
281 (sizeof(unsigned int) * 32));
282 if (fprs & FPRS_DU)
283 err |= copy_from_user(fpregs+16, &fpu->si_float_regs[32],
284 (sizeof(unsigned int) * 32));
285 err |= __get_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
286 err |= __get_user(current_thread_info()->gsr[0], &fpu->si_gsr);
287 current_thread_info()->fpsaved[0] |= fprs;
288 return err;
289}
290
291void do_rt_sigreturn(struct pt_regs *regs)
292{
293 struct rt_signal_frame __user *sf;
294 unsigned long tpc, tnpc, tstate;
295 __siginfo_fpu_t __user *fpu_save;
296 sigset_t set;
297 int err;
298
299 /* Always make any pending restarted system calls return -EINTR */
300 current_thread_info()->restart_block.fn = do_no_restart_syscall;
301
302 synchronize_user_stack ();
303 sf = (struct rt_signal_frame __user *)
304 (regs->u_regs [UREG_FP] + STACK_BIAS);
305
306 /* 1. Make sure we are not getting garbage from the user */
307 if (((unsigned long) sf) & 3)
308 goto segv;
309
310 err = get_user(tpc, &sf->regs.tpc);
311 err |= __get_user(tnpc, &sf->regs.tnpc);
312 if (test_thread_flag(TIF_32BIT)) {
313 tpc &= 0xffffffff;
314 tnpc &= 0xffffffff;
315 }
316 err |= ((tpc | tnpc) & 3);
317
318 /* 2. Restore the state */
319 err |= __get_user(regs->y, &sf->regs.y);
320 err |= __get_user(tstate, &sf->regs.tstate);
321 err |= copy_from_user(regs->u_regs, sf->regs.u_regs, sizeof(regs->u_regs));
322
323 /* User can only change condition codes and %asi in %tstate. */
324 regs->tstate &= ~(TSTATE_ASI | TSTATE_ICC | TSTATE_XCC);
325 regs->tstate |= (tstate & (TSTATE_ASI | TSTATE_ICC | TSTATE_XCC));
326
327 err |= __get_user(fpu_save, &sf->fpu_save);
328 if (fpu_save)
329 err |= restore_fpu_state(regs, &sf->fpu_state);
330
331 err |= __copy_from_user(&set, &sf->mask, sizeof(sigset_t));
332 err |= do_sigaltstack(&sf->stack, NULL, (unsigned long)sf);
333
334 if (err)
335 goto segv;
336
337 regs->tpc = tpc;
338 regs->tnpc = tnpc;
339
340 /* Prevent syscall restart. */
341 pt_regs_clear_syscall(regs);
342
343 sigdelsetmask(&set, ~_BLOCKABLE);
344 spin_lock_irq(&current->sighand->siglock);
345 current->blocked = set;
346 recalc_sigpending();
347 spin_unlock_irq(&current->sighand->siglock);
348 return;
349segv:
350 force_sig(SIGSEGV, current);
351}
352
353/* Checks if the fp is valid */
354static int invalid_frame_pointer(void __user *fp, int fplen)
355{
356 if (((unsigned long) fp) & 7)
357 return 1;
358 return 0;
359}
360
361static inline int
362save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
363{
364 unsigned long *fpregs = current_thread_info()->fpregs;
365 unsigned long fprs;
366 int err = 0;
367
368 fprs = current_thread_info()->fpsaved[0];
369 if (fprs & FPRS_DL)
370 err |= copy_to_user(&fpu->si_float_regs[0], fpregs,
371 (sizeof(unsigned int) * 32));
372 if (fprs & FPRS_DU)
373 err |= copy_to_user(&fpu->si_float_regs[32], fpregs+16,
374 (sizeof(unsigned int) * 32));
375 err |= __put_user(current_thread_info()->xfsr[0], &fpu->si_fsr);
376 err |= __put_user(current_thread_info()->gsr[0], &fpu->si_gsr);
377 err |= __put_user(fprs, &fpu->si_fprs);
378
379 return err;
380}
381
382static inline void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, unsigned long framesize)
383{
384 unsigned long sp = regs->u_regs[UREG_FP] + STACK_BIAS;
385
386 /*
387 * If we are on the alternate signal stack and would overflow it, don't.
388 * Return an always-bogus address instead so we will die with SIGSEGV.
389 */
390 if (on_sig_stack(sp) && !likely(on_sig_stack(sp - framesize)))
391 return (void __user *) -1L;
392
393 /* This is the X/Open sanctioned signal stack switching. */
394 if (ka->sa.sa_flags & SA_ONSTACK) {
395 if (sas_ss_flags(sp) == 0)
396 sp = current->sas_ss_sp + current->sas_ss_size;
397 }
398
399 /* Always align the stack frame. This handles two cases. First,
400 * sigaltstack need not be mindful of platform specific stack
401 * alignment. Second, if we took this signal because the stack
402 * is not aligned properly, we'd like to take the signal cleanly
403 * and report that.
404 */
405 sp &= ~7UL;
406
407 return (void __user *)(sp - framesize);
408}
409
410static inline void
411setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
412 int signo, sigset_t *oldset, siginfo_t *info)
413{
414 struct rt_signal_frame __user *sf;
415 int sigframe_size, err;
416
417 /* 1. Make sure everything is clean */
418 synchronize_user_stack();
419 save_and_clear_fpu();
420
421 sigframe_size = sizeof(struct rt_signal_frame);
422 if (!(current_thread_info()->fpsaved[0] & FPRS_FEF))
423 sigframe_size -= sizeof(__siginfo_fpu_t);
424
425 sf = (struct rt_signal_frame __user *)
426 get_sigframe(ka, regs, sigframe_size);
427
428 if (invalid_frame_pointer (sf, sigframe_size))
429 goto sigill;
430
431 if (get_thread_wsaved() != 0)
432 goto sigill;
433
434 /* 2. Save the current process state */
435 err = copy_to_user(&sf->regs, regs, sizeof (*regs));
436
437 if (current_thread_info()->fpsaved[0] & FPRS_FEF) {
438 err |= save_fpu_state(regs, &sf->fpu_state);
439 err |= __put_user((u64)&sf->fpu_state, &sf->fpu_save);
440 } else {
441 err |= __put_user(0, &sf->fpu_save);
442 }
443
444 /* Setup sigaltstack */
445 err |= __put_user(current->sas_ss_sp, &sf->stack.ss_sp);
446 err |= __put_user(sas_ss_flags(regs->u_regs[UREG_FP]), &sf->stack.ss_flags);
447 err |= __put_user(current->sas_ss_size, &sf->stack.ss_size);
448
449 err |= copy_to_user(&sf->mask, oldset, sizeof(sigset_t));
450
451 err |= copy_in_user((u64 __user *)sf,
452 (u64 __user *)(regs->u_regs[UREG_FP]+STACK_BIAS),
453 sizeof(struct reg_window));
454
455 if (info)
456 err |= copy_siginfo_to_user(&sf->info, info);
457 else {
458 err |= __put_user(signo, &sf->info.si_signo);
459 err |= __put_user(SI_NOINFO, &sf->info.si_code);
460 }
461 if (err)
462 goto sigsegv;
463
464 /* 3. signal handler back-trampoline and parameters */
465 regs->u_regs[UREG_FP] = ((unsigned long) sf) - STACK_BIAS;
466 regs->u_regs[UREG_I0] = signo;
467 regs->u_regs[UREG_I1] = (unsigned long) &sf->info;
468
469 /* The sigcontext is passed in this way because of how it
470 * is defined in GLIBC's /usr/include/bits/sigcontext.h
471 * for sparc64. It includes the 128 bytes of siginfo_t.
472 */
473 regs->u_regs[UREG_I2] = (unsigned long) &sf->info;
474
475 /* 5. signal handler */
476 regs->tpc = (unsigned long) ka->sa.sa_handler;
477 regs->tnpc = (regs->tpc + 4);
478 if (test_thread_flag(TIF_32BIT)) {
479 regs->tpc &= 0xffffffff;
480 regs->tnpc &= 0xffffffff;
481 }
482 /* 4. return to kernel instructions */
483 regs->u_regs[UREG_I7] = (unsigned long)ka->ka_restorer;
484 return;
485
486sigill:
487 do_exit(SIGILL);
488sigsegv:
489 force_sigsegv(signo, current);
490}
491
492static inline void handle_signal(unsigned long signr, struct k_sigaction *ka,
493 siginfo_t *info,
494 sigset_t *oldset, struct pt_regs *regs)
495{
496 setup_rt_frame(ka, regs, signr, oldset,
497 (ka->sa.sa_flags & SA_SIGINFO) ? info : NULL);
498 spin_lock_irq(&current->sighand->siglock);
499 sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
500 if (!(ka->sa.sa_flags & SA_NOMASK))
501 sigaddset(&current->blocked,signr);
502 recalc_sigpending();
503 spin_unlock_irq(&current->sighand->siglock);
504}
505
506static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
507 struct sigaction *sa)
508{
509 switch (regs->u_regs[UREG_I0]) {
510 case ERESTART_RESTARTBLOCK:
511 case ERESTARTNOHAND:
512 no_system_call_restart:
513 regs->u_regs[UREG_I0] = EINTR;
514 regs->tstate |= (TSTATE_ICARRY|TSTATE_XCARRY);
515 break;
516 case ERESTARTSYS:
517 if (!(sa->sa_flags & SA_RESTART))
518 goto no_system_call_restart;
519 /* fallthrough */
520 case ERESTARTNOINTR:
521 regs->u_regs[UREG_I0] = orig_i0;
522 regs->tpc -= 4;
523 regs->tnpc -= 4;
524 }
525}
526
527/* Note that 'init' is a special process: it doesn't get signals it doesn't
528 * want to handle. Thus you cannot kill init even with a SIGKILL even by
529 * mistake.
530 */
531static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
532{
533 struct k_sigaction ka;
534 int restart_syscall;
535 sigset_t *oldset;
536 siginfo_t info;
537 int signr;
538
539 if (pt_regs_is_syscall(regs) &&
540 (regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY))) {
541 restart_syscall = 1;
542 } else
543 restart_syscall = 0;
544
545 if (current_thread_info()->status & TS_RESTORE_SIGMASK)
546 oldset = &current->saved_sigmask;
547 else
548 oldset = &current->blocked;
549
550#ifdef CONFIG_COMPAT
551 if (test_thread_flag(TIF_32BIT)) {
552 extern void do_signal32(sigset_t *, struct pt_regs *,
553 int restart_syscall,
554 unsigned long orig_i0);
555 do_signal32(oldset, regs, restart_syscall, orig_i0);
556 return;
557 }
558#endif
559
560 signr = get_signal_to_deliver(&info, &ka, regs, NULL);
561
562 /* If the debugger messes with the program counter, it clears
563 * the software "in syscall" bit, directing us to not perform
564 * a syscall restart.
565 */
566 if (restart_syscall && !pt_regs_is_syscall(regs))
567 restart_syscall = 0;
568
569 if (signr > 0) {
570 if (restart_syscall)
571 syscall_restart(orig_i0, regs, &ka.sa);
572 handle_signal(signr, &ka, &info, oldset, regs);
573
574 /* A signal was successfully delivered; the saved
575 * sigmask will have been stored in the signal frame,
576 * and will be restored by sigreturn, so we can simply
577 * clear the TS_RESTORE_SIGMASK flag.
578 */
579 current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
580
581 tracehook_signal_handler(signr, &info, &ka, regs, 0);
582 return;
583 }
584 if (restart_syscall &&
585 (regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
586 regs->u_regs[UREG_I0] == ERESTARTSYS ||
587 regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
588 /* replay the system call when we are done */
589 regs->u_regs[UREG_I0] = orig_i0;
590 regs->tpc -= 4;
591 regs->tnpc -= 4;
592 }
593 if (restart_syscall &&
594 regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
595 regs->u_regs[UREG_G1] = __NR_restart_syscall;
596 regs->tpc -= 4;
597 regs->tnpc -= 4;
598 }
599
600 /* If there's no signal to deliver, we just put the saved sigmask
601 * back
602 */
603 if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
604 current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
605 sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
606 }
607}
608
609void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long thread_info_flags)
610{
611 if (thread_info_flags & _TIF_SIGPENDING)
612 do_signal(regs, orig_i0);
613 if (thread_info_flags & _TIF_NOTIFY_RESUME) {
614 clear_thread_flag(TIF_NOTIFY_RESUME);
615 tracehook_notify_resume(regs);
616 }
617}
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
new file mode 100644
index 000000000000..b5225c81556c
--- /dev/null
+++ b/arch/sparc/kernel/smp_64.c
@@ -0,0 +1,1412 @@
1/* smp.c: Sparc64 SMP support.
2 *
3 * Copyright (C) 1997, 2007, 2008 David S. Miller (davem@davemloft.net)
4 */
5
6#include <linux/module.h>
7#include <linux/kernel.h>
8#include <linux/sched.h>
9#include <linux/mm.h>
10#include <linux/pagemap.h>
11#include <linux/threads.h>
12#include <linux/smp.h>
13#include <linux/interrupt.h>
14#include <linux/kernel_stat.h>
15#include <linux/delay.h>
16#include <linux/init.h>
17#include <linux/spinlock.h>
18#include <linux/fs.h>
19#include <linux/seq_file.h>
20#include <linux/cache.h>
21#include <linux/jiffies.h>
22#include <linux/profile.h>
23#include <linux/lmb.h>
24#include <linux/cpu.h>
25
26#include <asm/head.h>
27#include <asm/ptrace.h>
28#include <asm/atomic.h>
29#include <asm/tlbflush.h>
30#include <asm/mmu_context.h>
31#include <asm/cpudata.h>
32#include <asm/hvtramp.h>
33#include <asm/io.h>
34#include <asm/timer.h>
35
36#include <asm/irq.h>
37#include <asm/irq_regs.h>
38#include <asm/page.h>
39#include <asm/pgtable.h>
40#include <asm/oplib.h>
41#include <asm/uaccess.h>
42#include <asm/starfire.h>
43#include <asm/tlb.h>
44#include <asm/sections.h>
45#include <asm/prom.h>
46#include <asm/mdesc.h>
47#include <asm/ldc.h>
48#include <asm/hypervisor.h>
49
50int sparc64_multi_core __read_mostly;
51
52cpumask_t cpu_possible_map __read_mostly = CPU_MASK_NONE;
53cpumask_t cpu_online_map __read_mostly = CPU_MASK_NONE;
54DEFINE_PER_CPU(cpumask_t, cpu_sibling_map) = CPU_MASK_NONE;
55cpumask_t cpu_core_map[NR_CPUS] __read_mostly =
56 { [0 ... NR_CPUS-1] = CPU_MASK_NONE };
57
58EXPORT_SYMBOL(cpu_possible_map);
59EXPORT_SYMBOL(cpu_online_map);
60EXPORT_PER_CPU_SYMBOL(cpu_sibling_map);
61EXPORT_SYMBOL(cpu_core_map);
62
63static cpumask_t smp_commenced_mask;
64
65void smp_info(struct seq_file *m)
66{
67 int i;
68
69 seq_printf(m, "State:\n");
70 for_each_online_cpu(i)
71 seq_printf(m, "CPU%d:\t\tonline\n", i);
72}
73
74void smp_bogo(struct seq_file *m)
75{
76 int i;
77
78 for_each_online_cpu(i)
79 seq_printf(m,
80 "Cpu%dClkTck\t: %016lx\n",
81 i, cpu_data(i).clock_tick);
82}
83
84extern void setup_sparc64_timer(void);
85
86static volatile unsigned long callin_flag = 0;
87
88void __cpuinit smp_callin(void)
89{
90 int cpuid = hard_smp_processor_id();
91
92 __local_per_cpu_offset = __per_cpu_offset(cpuid);
93
94 if (tlb_type == hypervisor)
95 sun4v_ktsb_register();
96
97 __flush_tlb_all();
98
99 setup_sparc64_timer();
100
101 if (cheetah_pcache_forced_on)
102 cheetah_enable_pcache();
103
104 local_irq_enable();
105
106 callin_flag = 1;
107 __asm__ __volatile__("membar #Sync\n\t"
108 "flush %%g6" : : : "memory");
109
110 /* Clear this or we will die instantly when we
111 * schedule back to this idler...
112 */
113 current_thread_info()->new_child = 0;
114
115 /* Attach to the address space of init_task. */
116 atomic_inc(&init_mm.mm_count);
117 current->active_mm = &init_mm;
118
119 /* inform the notifiers about the new cpu */
120 notify_cpu_starting(cpuid);
121
122 while (!cpu_isset(cpuid, smp_commenced_mask))
123 rmb();
124
125 ipi_call_lock();
126 cpu_set(cpuid, cpu_online_map);
127 ipi_call_unlock();
128
129 /* idle thread is expected to have preempt disabled */
130 preempt_disable();
131}
132
133void cpu_panic(void)
134{
135 printk("CPU[%d]: Returns from cpu_idle!\n", smp_processor_id());
136 panic("SMP bolixed\n");
137}
138
139/* This tick register synchronization scheme is taken entirely from
140 * the ia64 port, see arch/ia64/kernel/smpboot.c for details and credit.
141 *
142 * The only change I've made is to rework it so that the master
143 * initiates the synchonization instead of the slave. -DaveM
144 */
145
146#define MASTER 0
147#define SLAVE (SMP_CACHE_BYTES/sizeof(unsigned long))
148
149#define NUM_ROUNDS 64 /* magic value */
150#define NUM_ITERS 5 /* likewise */
151
152static DEFINE_SPINLOCK(itc_sync_lock);
153static unsigned long go[SLAVE + 1];
154
155#define DEBUG_TICK_SYNC 0
156
157static inline long get_delta (long *rt, long *master)
158{
159 unsigned long best_t0 = 0, best_t1 = ~0UL, best_tm = 0;
160 unsigned long tcenter, t0, t1, tm;
161 unsigned long i;
162
163 for (i = 0; i < NUM_ITERS; i++) {
164 t0 = tick_ops->get_tick();
165 go[MASTER] = 1;
166 membar_safe("#StoreLoad");
167 while (!(tm = go[SLAVE]))
168 rmb();
169 go[SLAVE] = 0;
170 wmb();
171 t1 = tick_ops->get_tick();
172
173 if (t1 - t0 < best_t1 - best_t0)
174 best_t0 = t0, best_t1 = t1, best_tm = tm;
175 }
176
177 *rt = best_t1 - best_t0;
178 *master = best_tm - best_t0;
179
180 /* average best_t0 and best_t1 without overflow: */
181 tcenter = (best_t0/2 + best_t1/2);
182 if (best_t0 % 2 + best_t1 % 2 == 2)
183 tcenter++;
184 return tcenter - best_tm;
185}
186
187void smp_synchronize_tick_client(void)
188{
189 long i, delta, adj, adjust_latency = 0, done = 0;
190 unsigned long flags, rt, master_time_stamp, bound;
191#if DEBUG_TICK_SYNC
192 struct {
193 long rt; /* roundtrip time */
194 long master; /* master's timestamp */
195 long diff; /* difference between midpoint and master's timestamp */
196 long lat; /* estimate of itc adjustment latency */
197 } t[NUM_ROUNDS];
198#endif
199
200 go[MASTER] = 1;
201
202 while (go[MASTER])
203 rmb();
204
205 local_irq_save(flags);
206 {
207 for (i = 0; i < NUM_ROUNDS; i++) {
208 delta = get_delta(&rt, &master_time_stamp);
209 if (delta == 0) {
210 done = 1; /* let's lock on to this... */
211 bound = rt;
212 }
213
214 if (!done) {
215 if (i > 0) {
216 adjust_latency += -delta;
217 adj = -delta + adjust_latency/4;
218 } else
219 adj = -delta;
220
221 tick_ops->add_tick(adj);
222 }
223#if DEBUG_TICK_SYNC
224 t[i].rt = rt;
225 t[i].master = master_time_stamp;
226 t[i].diff = delta;
227 t[i].lat = adjust_latency/4;
228#endif
229 }
230 }
231 local_irq_restore(flags);
232
233#if DEBUG_TICK_SYNC
234 for (i = 0; i < NUM_ROUNDS; i++)
235 printk("rt=%5ld master=%5ld diff=%5ld adjlat=%5ld\n",
236 t[i].rt, t[i].master, t[i].diff, t[i].lat);
237#endif
238
239 printk(KERN_INFO "CPU %d: synchronized TICK with master CPU "
240 "(last diff %ld cycles, maxerr %lu cycles)\n",
241 smp_processor_id(), delta, rt);
242}
243
244static void smp_start_sync_tick_client(int cpu);
245
246static void smp_synchronize_one_tick(int cpu)
247{
248 unsigned long flags, i;
249
250 go[MASTER] = 0;
251
252 smp_start_sync_tick_client(cpu);
253
254 /* wait for client to be ready */
255 while (!go[MASTER])
256 rmb();
257
258 /* now let the client proceed into his loop */
259 go[MASTER] = 0;
260 membar_safe("#StoreLoad");
261
262 spin_lock_irqsave(&itc_sync_lock, flags);
263 {
264 for (i = 0; i < NUM_ROUNDS*NUM_ITERS; i++) {
265 while (!go[MASTER])
266 rmb();
267 go[MASTER] = 0;
268 wmb();
269 go[SLAVE] = tick_ops->get_tick();
270 membar_safe("#StoreLoad");
271 }
272 }
273 spin_unlock_irqrestore(&itc_sync_lock, flags);
274}
275
276#if defined(CONFIG_SUN_LDOMS) && defined(CONFIG_HOTPLUG_CPU)
277/* XXX Put this in some common place. XXX */
278static unsigned long kimage_addr_to_ra(void *p)
279{
280 unsigned long val = (unsigned long) p;
281
282 return kern_base + (val - KERNBASE);
283}
284
285static void __cpuinit ldom_startcpu_cpuid(unsigned int cpu, unsigned long thread_reg)
286{
287 extern unsigned long sparc64_ttable_tl0;
288 extern unsigned long kern_locked_tte_data;
289 struct hvtramp_descr *hdesc;
290 unsigned long trampoline_ra;
291 struct trap_per_cpu *tb;
292 u64 tte_vaddr, tte_data;
293 unsigned long hv_err;
294 int i;
295
296 hdesc = kzalloc(sizeof(*hdesc) +
297 (sizeof(struct hvtramp_mapping) *
298 num_kernel_image_mappings - 1),
299 GFP_KERNEL);
300 if (!hdesc) {
301 printk(KERN_ERR "ldom_startcpu_cpuid: Cannot allocate "
302 "hvtramp_descr.\n");
303 return;
304 }
305
306 hdesc->cpu = cpu;
307 hdesc->num_mappings = num_kernel_image_mappings;
308
309 tb = &trap_block[cpu];
310 tb->hdesc = hdesc;
311
312 hdesc->fault_info_va = (unsigned long) &tb->fault_info;
313 hdesc->fault_info_pa = kimage_addr_to_ra(&tb->fault_info);
314
315 hdesc->thread_reg = thread_reg;
316
317 tte_vaddr = (unsigned long) KERNBASE;
318 tte_data = kern_locked_tte_data;
319
320 for (i = 0; i < hdesc->num_mappings; i++) {
321 hdesc->maps[i].vaddr = tte_vaddr;
322 hdesc->maps[i].tte = tte_data;
323 tte_vaddr += 0x400000;
324 tte_data += 0x400000;
325 }
326
327 trampoline_ra = kimage_addr_to_ra(hv_cpu_startup);
328
329 hv_err = sun4v_cpu_start(cpu, trampoline_ra,
330 kimage_addr_to_ra(&sparc64_ttable_tl0),
331 __pa(hdesc));
332 if (hv_err)
333 printk(KERN_ERR "ldom_startcpu_cpuid: sun4v_cpu_start() "
334 "gives error %lu\n", hv_err);
335}
336#endif
337
338extern unsigned long sparc64_cpu_startup;
339
340/* The OBP cpu startup callback truncates the 3rd arg cookie to
341 * 32-bits (I think) so to be safe we have it read the pointer
342 * contained here so we work on >4GB machines. -DaveM
343 */
344static struct thread_info *cpu_new_thread = NULL;
345
346static int __cpuinit smp_boot_one_cpu(unsigned int cpu)
347{
348 struct trap_per_cpu *tb = &trap_block[cpu];
349 unsigned long entry =
350 (unsigned long)(&sparc64_cpu_startup);
351 unsigned long cookie =
352 (unsigned long)(&cpu_new_thread);
353 struct task_struct *p;
354 int timeout, ret;
355
356 p = fork_idle(cpu);
357 if (IS_ERR(p))
358 return PTR_ERR(p);
359 callin_flag = 0;
360 cpu_new_thread = task_thread_info(p);
361
362 if (tlb_type == hypervisor) {
363#if defined(CONFIG_SUN_LDOMS) && defined(CONFIG_HOTPLUG_CPU)
364 if (ldom_domaining_enabled)
365 ldom_startcpu_cpuid(cpu,
366 (unsigned long) cpu_new_thread);
367 else
368#endif
369 prom_startcpu_cpuid(cpu, entry, cookie);
370 } else {
371 struct device_node *dp = of_find_node_by_cpuid(cpu);
372
373 prom_startcpu(dp->node, entry, cookie);
374 }
375
376 for (timeout = 0; timeout < 50000; timeout++) {
377 if (callin_flag)
378 break;
379 udelay(100);
380 }
381
382 if (callin_flag) {
383 ret = 0;
384 } else {
385 printk("Processor %d is stuck.\n", cpu);
386 ret = -ENODEV;
387 }
388 cpu_new_thread = NULL;
389
390 if (tb->hdesc) {
391 kfree(tb->hdesc);
392 tb->hdesc = NULL;
393 }
394
395 return ret;
396}
397
398static void spitfire_xcall_helper(u64 data0, u64 data1, u64 data2, u64 pstate, unsigned long cpu)
399{
400 u64 result, target;
401 int stuck, tmp;
402
403 if (this_is_starfire) {
404 /* map to real upaid */
405 cpu = (((cpu & 0x3c) << 1) |
406 ((cpu & 0x40) >> 4) |
407 (cpu & 0x3));
408 }
409
410 target = (cpu << 14) | 0x70;
411again:
412 /* Ok, this is the real Spitfire Errata #54.
413 * One must read back from a UDB internal register
414 * after writes to the UDB interrupt dispatch, but
415 * before the membar Sync for that write.
416 * So we use the high UDB control register (ASI 0x7f,
417 * ADDR 0x20) for the dummy read. -DaveM
418 */
419 tmp = 0x40;
420 __asm__ __volatile__(
421 "wrpr %1, %2, %%pstate\n\t"
422 "stxa %4, [%0] %3\n\t"
423 "stxa %5, [%0+%8] %3\n\t"
424 "add %0, %8, %0\n\t"
425 "stxa %6, [%0+%8] %3\n\t"
426 "membar #Sync\n\t"
427 "stxa %%g0, [%7] %3\n\t"
428 "membar #Sync\n\t"
429 "mov 0x20, %%g1\n\t"
430 "ldxa [%%g1] 0x7f, %%g0\n\t"
431 "membar #Sync"
432 : "=r" (tmp)
433 : "r" (pstate), "i" (PSTATE_IE), "i" (ASI_INTR_W),
434 "r" (data0), "r" (data1), "r" (data2), "r" (target),
435 "r" (0x10), "0" (tmp)
436 : "g1");
437
438 /* NOTE: PSTATE_IE is still clear. */
439 stuck = 100000;
440 do {
441 __asm__ __volatile__("ldxa [%%g0] %1, %0"
442 : "=r" (result)
443 : "i" (ASI_INTR_DISPATCH_STAT));
444 if (result == 0) {
445 __asm__ __volatile__("wrpr %0, 0x0, %%pstate"
446 : : "r" (pstate));
447 return;
448 }
449 stuck -= 1;
450 if (stuck == 0)
451 break;
452 } while (result & 0x1);
453 __asm__ __volatile__("wrpr %0, 0x0, %%pstate"
454 : : "r" (pstate));
455 if (stuck == 0) {
456 printk("CPU[%d]: mondo stuckage result[%016lx]\n",
457 smp_processor_id(), result);
458 } else {
459 udelay(2);
460 goto again;
461 }
462}
463
464static void spitfire_xcall_deliver(struct trap_per_cpu *tb, int cnt)
465{
466 u64 *mondo, data0, data1, data2;
467 u16 *cpu_list;
468 u64 pstate;
469 int i;
470
471 __asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
472 cpu_list = __va(tb->cpu_list_pa);
473 mondo = __va(tb->cpu_mondo_block_pa);
474 data0 = mondo[0];
475 data1 = mondo[1];
476 data2 = mondo[2];
477 for (i = 0; i < cnt; i++)
478 spitfire_xcall_helper(data0, data1, data2, pstate, cpu_list[i]);
479}
480
481/* Cheetah now allows to send the whole 64-bytes of data in the interrupt
482 * packet, but we have no use for that. However we do take advantage of
483 * the new pipelining feature (ie. dispatch to multiple cpus simultaneously).
484 */
485static void cheetah_xcall_deliver(struct trap_per_cpu *tb, int cnt)
486{
487 int nack_busy_id, is_jbus, need_more;
488 u64 *mondo, pstate, ver, busy_mask;
489 u16 *cpu_list;
490
491 cpu_list = __va(tb->cpu_list_pa);
492 mondo = __va(tb->cpu_mondo_block_pa);
493
494 /* Unfortunately, someone at Sun had the brilliant idea to make the
495 * busy/nack fields hard-coded by ITID number for this Ultra-III
496 * derivative processor.
497 */
498 __asm__ ("rdpr %%ver, %0" : "=r" (ver));
499 is_jbus = ((ver >> 32) == __JALAPENO_ID ||
500 (ver >> 32) == __SERRANO_ID);
501
502 __asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
503
504retry:
505 need_more = 0;
506 __asm__ __volatile__("wrpr %0, %1, %%pstate\n\t"
507 : : "r" (pstate), "i" (PSTATE_IE));
508
509 /* Setup the dispatch data registers. */
510 __asm__ __volatile__("stxa %0, [%3] %6\n\t"
511 "stxa %1, [%4] %6\n\t"
512 "stxa %2, [%5] %6\n\t"
513 "membar #Sync\n\t"
514 : /* no outputs */
515 : "r" (mondo[0]), "r" (mondo[1]), "r" (mondo[2]),
516 "r" (0x40), "r" (0x50), "r" (0x60),
517 "i" (ASI_INTR_W));
518
519 nack_busy_id = 0;
520 busy_mask = 0;
521 {
522 int i;
523
524 for (i = 0; i < cnt; i++) {
525 u64 target, nr;
526
527 nr = cpu_list[i];
528 if (nr == 0xffff)
529 continue;
530
531 target = (nr << 14) | 0x70;
532 if (is_jbus) {
533 busy_mask |= (0x1UL << (nr * 2));
534 } else {
535 target |= (nack_busy_id << 24);
536 busy_mask |= (0x1UL <<
537 (nack_busy_id * 2));
538 }
539 __asm__ __volatile__(
540 "stxa %%g0, [%0] %1\n\t"
541 "membar #Sync\n\t"
542 : /* no outputs */
543 : "r" (target), "i" (ASI_INTR_W));
544 nack_busy_id++;
545 if (nack_busy_id == 32) {
546 need_more = 1;
547 break;
548 }
549 }
550 }
551
552 /* Now, poll for completion. */
553 {
554 u64 dispatch_stat, nack_mask;
555 long stuck;
556
557 stuck = 100000 * nack_busy_id;
558 nack_mask = busy_mask << 1;
559 do {
560 __asm__ __volatile__("ldxa [%%g0] %1, %0"
561 : "=r" (dispatch_stat)
562 : "i" (ASI_INTR_DISPATCH_STAT));
563 if (!(dispatch_stat & (busy_mask | nack_mask))) {
564 __asm__ __volatile__("wrpr %0, 0x0, %%pstate"
565 : : "r" (pstate));
566 if (unlikely(need_more)) {
567 int i, this_cnt = 0;
568 for (i = 0; i < cnt; i++) {
569 if (cpu_list[i] == 0xffff)
570 continue;
571 cpu_list[i] = 0xffff;
572 this_cnt++;
573 if (this_cnt == 32)
574 break;
575 }
576 goto retry;
577 }
578 return;
579 }
580 if (!--stuck)
581 break;
582 } while (dispatch_stat & busy_mask);
583
584 __asm__ __volatile__("wrpr %0, 0x0, %%pstate"
585 : : "r" (pstate));
586
587 if (dispatch_stat & busy_mask) {
588 /* Busy bits will not clear, continue instead
589 * of freezing up on this cpu.
590 */
591 printk("CPU[%d]: mondo stuckage result[%016lx]\n",
592 smp_processor_id(), dispatch_stat);
593 } else {
594 int i, this_busy_nack = 0;
595
596 /* Delay some random time with interrupts enabled
597 * to prevent deadlock.
598 */
599 udelay(2 * nack_busy_id);
600
601 /* Clear out the mask bits for cpus which did not
602 * NACK us.
603 */
604 for (i = 0; i < cnt; i++) {
605 u64 check_mask, nr;
606
607 nr = cpu_list[i];
608 if (nr == 0xffff)
609 continue;
610
611 if (is_jbus)
612 check_mask = (0x2UL << (2*nr));
613 else
614 check_mask = (0x2UL <<
615 this_busy_nack);
616 if ((dispatch_stat & check_mask) == 0)
617 cpu_list[i] = 0xffff;
618 this_busy_nack += 2;
619 if (this_busy_nack == 64)
620 break;
621 }
622
623 goto retry;
624 }
625 }
626}
627
628/* Multi-cpu list version. */
629static void hypervisor_xcall_deliver(struct trap_per_cpu *tb, int cnt)
630{
631 int retries, this_cpu, prev_sent, i, saw_cpu_error;
632 unsigned long status;
633 u16 *cpu_list;
634
635 this_cpu = smp_processor_id();
636
637 cpu_list = __va(tb->cpu_list_pa);
638
639 saw_cpu_error = 0;
640 retries = 0;
641 prev_sent = 0;
642 do {
643 int forward_progress, n_sent;
644
645 status = sun4v_cpu_mondo_send(cnt,
646 tb->cpu_list_pa,
647 tb->cpu_mondo_block_pa);
648
649 /* HV_EOK means all cpus received the xcall, we're done. */
650 if (likely(status == HV_EOK))
651 break;
652
653 /* First, see if we made any forward progress.
654 *
655 * The hypervisor indicates successful sends by setting
656 * cpu list entries to the value 0xffff.
657 */
658 n_sent = 0;
659 for (i = 0; i < cnt; i++) {
660 if (likely(cpu_list[i] == 0xffff))
661 n_sent++;
662 }
663
664 forward_progress = 0;
665 if (n_sent > prev_sent)
666 forward_progress = 1;
667
668 prev_sent = n_sent;
669
670 /* If we get a HV_ECPUERROR, then one or more of the cpus
671 * in the list are in error state. Use the cpu_state()
672 * hypervisor call to find out which cpus are in error state.
673 */
674 if (unlikely(status == HV_ECPUERROR)) {
675 for (i = 0; i < cnt; i++) {
676 long err;
677 u16 cpu;
678
679 cpu = cpu_list[i];
680 if (cpu == 0xffff)
681 continue;
682
683 err = sun4v_cpu_state(cpu);
684 if (err == HV_CPU_STATE_ERROR) {
685 saw_cpu_error = (cpu + 1);
686 cpu_list[i] = 0xffff;
687 }
688 }
689 } else if (unlikely(status != HV_EWOULDBLOCK))
690 goto fatal_mondo_error;
691
692 /* Don't bother rewriting the CPU list, just leave the
693 * 0xffff and non-0xffff entries in there and the
694 * hypervisor will do the right thing.
695 *
696 * Only advance timeout state if we didn't make any
697 * forward progress.
698 */
699 if (unlikely(!forward_progress)) {
700 if (unlikely(++retries > 10000))
701 goto fatal_mondo_timeout;
702
703 /* Delay a little bit to let other cpus catch up
704 * on their cpu mondo queue work.
705 */
706 udelay(2 * cnt);
707 }
708 } while (1);
709
710 if (unlikely(saw_cpu_error))
711 goto fatal_mondo_cpu_error;
712
713 return;
714
715fatal_mondo_cpu_error:
716 printk(KERN_CRIT "CPU[%d]: SUN4V mondo cpu error, some target cpus "
717 "(including %d) were in error state\n",
718 this_cpu, saw_cpu_error - 1);
719 return;
720
721fatal_mondo_timeout:
722 printk(KERN_CRIT "CPU[%d]: SUN4V mondo timeout, no forward "
723 " progress after %d retries.\n",
724 this_cpu, retries);
725 goto dump_cpu_list_and_out;
726
727fatal_mondo_error:
728 printk(KERN_CRIT "CPU[%d]: Unexpected SUN4V mondo error %lu\n",
729 this_cpu, status);
730 printk(KERN_CRIT "CPU[%d]: Args were cnt(%d) cpulist_pa(%lx) "
731 "mondo_block_pa(%lx)\n",
732 this_cpu, cnt, tb->cpu_list_pa, tb->cpu_mondo_block_pa);
733
734dump_cpu_list_and_out:
735 printk(KERN_CRIT "CPU[%d]: CPU list [ ", this_cpu);
736 for (i = 0; i < cnt; i++)
737 printk("%u ", cpu_list[i]);
738 printk("]\n");
739}
740
741static void (*xcall_deliver_impl)(struct trap_per_cpu *, int);
742
743static void xcall_deliver(u64 data0, u64 data1, u64 data2, const cpumask_t *mask)
744{
745 struct trap_per_cpu *tb;
746 int this_cpu, i, cnt;
747 unsigned long flags;
748 u16 *cpu_list;
749 u64 *mondo;
750
751 /* We have to do this whole thing with interrupts fully disabled.
752 * Otherwise if we send an xcall from interrupt context it will
753 * corrupt both our mondo block and cpu list state.
754 *
755 * One consequence of this is that we cannot use timeout mechanisms
756 * that depend upon interrupts being delivered locally. So, for
757 * example, we cannot sample jiffies and expect it to advance.
758 *
759 * Fortunately, udelay() uses %stick/%tick so we can use that.
760 */
761 local_irq_save(flags);
762
763 this_cpu = smp_processor_id();
764 tb = &trap_block[this_cpu];
765
766 mondo = __va(tb->cpu_mondo_block_pa);
767 mondo[0] = data0;
768 mondo[1] = data1;
769 mondo[2] = data2;
770 wmb();
771
772 cpu_list = __va(tb->cpu_list_pa);
773
774 /* Setup the initial cpu list. */
775 cnt = 0;
776 for_each_cpu_mask_nr(i, *mask) {
777 if (i == this_cpu || !cpu_online(i))
778 continue;
779 cpu_list[cnt++] = i;
780 }
781
782 if (cnt)
783 xcall_deliver_impl(tb, cnt);
784
785 local_irq_restore(flags);
786}
787
788/* Send cross call to all processors mentioned in MASK_P
789 * except self. Really, there are only two cases currently,
790 * "&cpu_online_map" and "&mm->cpu_vm_mask".
791 */
792static void smp_cross_call_masked(unsigned long *func, u32 ctx, u64 data1, u64 data2, const cpumask_t *mask)
793{
794 u64 data0 = (((u64)ctx)<<32 | (((u64)func) & 0xffffffff));
795
796 xcall_deliver(data0, data1, data2, mask);
797}
798
799/* Send cross call to all processors except self. */
800static void smp_cross_call(unsigned long *func, u32 ctx, u64 data1, u64 data2)
801{
802 smp_cross_call_masked(func, ctx, data1, data2, &cpu_online_map);
803}
804
805extern unsigned long xcall_sync_tick;
806
807static void smp_start_sync_tick_client(int cpu)
808{
809 xcall_deliver((u64) &xcall_sync_tick, 0, 0,
810 &cpumask_of_cpu(cpu));
811}
812
813extern unsigned long xcall_call_function;
814
815void arch_send_call_function_ipi(cpumask_t mask)
816{
817 xcall_deliver((u64) &xcall_call_function, 0, 0, &mask);
818}
819
820extern unsigned long xcall_call_function_single;
821
822void arch_send_call_function_single_ipi(int cpu)
823{
824 xcall_deliver((u64) &xcall_call_function_single, 0, 0,
825 &cpumask_of_cpu(cpu));
826}
827
828void smp_call_function_client(int irq, struct pt_regs *regs)
829{
830 clear_softint(1 << irq);
831 generic_smp_call_function_interrupt();
832}
833
834void smp_call_function_single_client(int irq, struct pt_regs *regs)
835{
836 clear_softint(1 << irq);
837 generic_smp_call_function_single_interrupt();
838}
839
840static void tsb_sync(void *info)
841{
842 struct trap_per_cpu *tp = &trap_block[raw_smp_processor_id()];
843 struct mm_struct *mm = info;
844
845 /* It is not valid to test "currrent->active_mm == mm" here.
846 *
847 * The value of "current" is not changed atomically with
848 * switch_mm(). But that's OK, we just need to check the
849 * current cpu's trap block PGD physical address.
850 */
851 if (tp->pgd_paddr == __pa(mm->pgd))
852 tsb_context_switch(mm);
853}
854
855void smp_tsb_sync(struct mm_struct *mm)
856{
857 smp_call_function_mask(mm->cpu_vm_mask, tsb_sync, mm, 1);
858}
859
860extern unsigned long xcall_flush_tlb_mm;
861extern unsigned long xcall_flush_tlb_pending;
862extern unsigned long xcall_flush_tlb_kernel_range;
863extern unsigned long xcall_fetch_glob_regs;
864extern unsigned long xcall_receive_signal;
865extern unsigned long xcall_new_mmu_context_version;
866#ifdef CONFIG_KGDB
867extern unsigned long xcall_kgdb_capture;
868#endif
869
870#ifdef DCACHE_ALIASING_POSSIBLE
871extern unsigned long xcall_flush_dcache_page_cheetah;
872#endif
873extern unsigned long xcall_flush_dcache_page_spitfire;
874
875#ifdef CONFIG_DEBUG_DCFLUSH
876extern atomic_t dcpage_flushes;
877extern atomic_t dcpage_flushes_xcall;
878#endif
879
880static inline void __local_flush_dcache_page(struct page *page)
881{
882#ifdef DCACHE_ALIASING_POSSIBLE
883 __flush_dcache_page(page_address(page),
884 ((tlb_type == spitfire) &&
885 page_mapping(page) != NULL));
886#else
887 if (page_mapping(page) != NULL &&
888 tlb_type == spitfire)
889 __flush_icache_page(__pa(page_address(page)));
890#endif
891}
892
893void smp_flush_dcache_page_impl(struct page *page, int cpu)
894{
895 int this_cpu;
896
897 if (tlb_type == hypervisor)
898 return;
899
900#ifdef CONFIG_DEBUG_DCFLUSH
901 atomic_inc(&dcpage_flushes);
902#endif
903
904 this_cpu = get_cpu();
905
906 if (cpu == this_cpu) {
907 __local_flush_dcache_page(page);
908 } else if (cpu_online(cpu)) {
909 void *pg_addr = page_address(page);
910 u64 data0 = 0;
911
912 if (tlb_type == spitfire) {
913 data0 = ((u64)&xcall_flush_dcache_page_spitfire);
914 if (page_mapping(page) != NULL)
915 data0 |= ((u64)1 << 32);
916 } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
917#ifdef DCACHE_ALIASING_POSSIBLE
918 data0 = ((u64)&xcall_flush_dcache_page_cheetah);
919#endif
920 }
921 if (data0) {
922 xcall_deliver(data0, __pa(pg_addr),
923 (u64) pg_addr, &cpumask_of_cpu(cpu));
924#ifdef CONFIG_DEBUG_DCFLUSH
925 atomic_inc(&dcpage_flushes_xcall);
926#endif
927 }
928 }
929
930 put_cpu();
931}
932
933void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
934{
935 void *pg_addr;
936 int this_cpu;
937 u64 data0;
938
939 if (tlb_type == hypervisor)
940 return;
941
942 this_cpu = get_cpu();
943
944#ifdef CONFIG_DEBUG_DCFLUSH
945 atomic_inc(&dcpage_flushes);
946#endif
947 data0 = 0;
948 pg_addr = page_address(page);
949 if (tlb_type == spitfire) {
950 data0 = ((u64)&xcall_flush_dcache_page_spitfire);
951 if (page_mapping(page) != NULL)
952 data0 |= ((u64)1 << 32);
953 } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
954#ifdef DCACHE_ALIASING_POSSIBLE
955 data0 = ((u64)&xcall_flush_dcache_page_cheetah);
956#endif
957 }
958 if (data0) {
959 xcall_deliver(data0, __pa(pg_addr),
960 (u64) pg_addr, &cpu_online_map);
961#ifdef CONFIG_DEBUG_DCFLUSH
962 atomic_inc(&dcpage_flushes_xcall);
963#endif
964 }
965 __local_flush_dcache_page(page);
966
967 put_cpu();
968}
969
970void smp_new_mmu_context_version_client(int irq, struct pt_regs *regs)
971{
972 struct mm_struct *mm;
973 unsigned long flags;
974
975 clear_softint(1 << irq);
976
977 /* See if we need to allocate a new TLB context because
978 * the version of the one we are using is now out of date.
979 */
980 mm = current->active_mm;
981 if (unlikely(!mm || (mm == &init_mm)))
982 return;
983
984 spin_lock_irqsave(&mm->context.lock, flags);
985
986 if (unlikely(!CTX_VALID(mm->context)))
987 get_new_mmu_context(mm);
988
989 spin_unlock_irqrestore(&mm->context.lock, flags);
990
991 load_secondary_context(mm);
992 __flush_tlb_mm(CTX_HWBITS(mm->context),
993 SECONDARY_CONTEXT);
994}
995
996void smp_new_mmu_context_version(void)
997{
998 smp_cross_call(&xcall_new_mmu_context_version, 0, 0, 0);
999}
1000
1001#ifdef CONFIG_KGDB
1002void kgdb_roundup_cpus(unsigned long flags)
1003{
1004 smp_cross_call(&xcall_kgdb_capture, 0, 0, 0);
1005}
1006#endif
1007
1008void smp_fetch_global_regs(void)
1009{
1010 smp_cross_call(&xcall_fetch_glob_regs, 0, 0, 0);
1011}
1012
1013/* We know that the window frames of the user have been flushed
1014 * to the stack before we get here because all callers of us
1015 * are flush_tlb_*() routines, and these run after flush_cache_*()
1016 * which performs the flushw.
1017 *
1018 * The SMP TLB coherency scheme we use works as follows:
1019 *
1020 * 1) mm->cpu_vm_mask is a bit mask of which cpus an address
1021 * space has (potentially) executed on, this is the heuristic
1022 * we use to avoid doing cross calls.
1023 *
1024 * Also, for flushing from kswapd and also for clones, we
1025 * use cpu_vm_mask as the list of cpus to make run the TLB.
1026 *
1027 * 2) TLB context numbers are shared globally across all processors
1028 * in the system, this allows us to play several games to avoid
1029 * cross calls.
1030 *
1031 * One invariant is that when a cpu switches to a process, and
1032 * that processes tsk->active_mm->cpu_vm_mask does not have the
1033 * current cpu's bit set, that tlb context is flushed locally.
1034 *
1035 * If the address space is non-shared (ie. mm->count == 1) we avoid
1036 * cross calls when we want to flush the currently running process's
1037 * tlb state. This is done by clearing all cpu bits except the current
1038 * processor's in current->active_mm->cpu_vm_mask and performing the
1039 * flush locally only. This will force any subsequent cpus which run
1040 * this task to flush the context from the local tlb if the process
1041 * migrates to another cpu (again).
1042 *
1043 * 3) For shared address spaces (threads) and swapping we bite the
1044 * bullet for most cases and perform the cross call (but only to
1045 * the cpus listed in cpu_vm_mask).
1046 *
1047 * The performance gain from "optimizing" away the cross call for threads is
1048 * questionable (in theory the big win for threads is the massive sharing of
1049 * address space state across processors).
1050 */
1051
1052/* This currently is only used by the hugetlb arch pre-fault
1053 * hook on UltraSPARC-III+ and later when changing the pagesize
1054 * bits of the context register for an address space.
1055 */
1056void smp_flush_tlb_mm(struct mm_struct *mm)
1057{
1058 u32 ctx = CTX_HWBITS(mm->context);
1059 int cpu = get_cpu();
1060
1061 if (atomic_read(&mm->mm_users) == 1) {
1062 mm->cpu_vm_mask = cpumask_of_cpu(cpu);
1063 goto local_flush_and_out;
1064 }
1065
1066 smp_cross_call_masked(&xcall_flush_tlb_mm,
1067 ctx, 0, 0,
1068 &mm->cpu_vm_mask);
1069
1070local_flush_and_out:
1071 __flush_tlb_mm(ctx, SECONDARY_CONTEXT);
1072
1073 put_cpu();
1074}
1075
1076void smp_flush_tlb_pending(struct mm_struct *mm, unsigned long nr, unsigned long *vaddrs)
1077{
1078 u32 ctx = CTX_HWBITS(mm->context);
1079 int cpu = get_cpu();
1080
1081 if (mm == current->active_mm && atomic_read(&mm->mm_users) == 1)
1082 mm->cpu_vm_mask = cpumask_of_cpu(cpu);
1083 else
1084 smp_cross_call_masked(&xcall_flush_tlb_pending,
1085 ctx, nr, (unsigned long) vaddrs,
1086 &mm->cpu_vm_mask);
1087
1088 __flush_tlb_pending(ctx, nr, vaddrs);
1089
1090 put_cpu();
1091}
1092
1093void smp_flush_tlb_kernel_range(unsigned long start, unsigned long end)
1094{
1095 start &= PAGE_MASK;
1096 end = PAGE_ALIGN(end);
1097 if (start != end) {
1098 smp_cross_call(&xcall_flush_tlb_kernel_range,
1099 0, start, end);
1100
1101 __flush_tlb_kernel_range(start, end);
1102 }
1103}
1104
1105/* CPU capture. */
1106/* #define CAPTURE_DEBUG */
1107extern unsigned long xcall_capture;
1108
1109static atomic_t smp_capture_depth = ATOMIC_INIT(0);
1110static atomic_t smp_capture_registry = ATOMIC_INIT(0);
1111static unsigned long penguins_are_doing_time;
1112
1113void smp_capture(void)
1114{
1115 int result = atomic_add_ret(1, &smp_capture_depth);
1116
1117 if (result == 1) {
1118 int ncpus = num_online_cpus();
1119
1120#ifdef CAPTURE_DEBUG
1121 printk("CPU[%d]: Sending penguins to jail...",
1122 smp_processor_id());
1123#endif
1124 penguins_are_doing_time = 1;
1125 atomic_inc(&smp_capture_registry);
1126 smp_cross_call(&xcall_capture, 0, 0, 0);
1127 while (atomic_read(&smp_capture_registry) != ncpus)
1128 rmb();
1129#ifdef CAPTURE_DEBUG
1130 printk("done\n");
1131#endif
1132 }
1133}
1134
1135void smp_release(void)
1136{
1137 if (atomic_dec_and_test(&smp_capture_depth)) {
1138#ifdef CAPTURE_DEBUG
1139 printk("CPU[%d]: Giving pardon to "
1140 "imprisoned penguins\n",
1141 smp_processor_id());
1142#endif
1143 penguins_are_doing_time = 0;
1144 membar_safe("#StoreLoad");
1145 atomic_dec(&smp_capture_registry);
1146 }
1147}
1148
1149/* Imprisoned penguins run with %pil == PIL_NORMAL_MAX, but PSTATE_IE
1150 * set, so they can service tlb flush xcalls...
1151 */
1152extern void prom_world(int);
1153
1154void smp_penguin_jailcell(int irq, struct pt_regs *regs)
1155{
1156 clear_softint(1 << irq);
1157
1158 preempt_disable();
1159
1160 __asm__ __volatile__("flushw");
1161 prom_world(1);
1162 atomic_inc(&smp_capture_registry);
1163 membar_safe("#StoreLoad");
1164 while (penguins_are_doing_time)
1165 rmb();
1166 atomic_dec(&smp_capture_registry);
1167 prom_world(0);
1168
1169 preempt_enable();
1170}
1171
1172/* /proc/profile writes can call this, don't __init it please. */
1173int setup_profiling_timer(unsigned int multiplier)
1174{
1175 return -EINVAL;
1176}
1177
1178void __init smp_prepare_cpus(unsigned int max_cpus)
1179{
1180}
1181
1182void __devinit smp_prepare_boot_cpu(void)
1183{
1184}
1185
1186void __init smp_setup_processor_id(void)
1187{
1188 if (tlb_type == spitfire)
1189 xcall_deliver_impl = spitfire_xcall_deliver;
1190 else if (tlb_type == cheetah || tlb_type == cheetah_plus)
1191 xcall_deliver_impl = cheetah_xcall_deliver;
1192 else
1193 xcall_deliver_impl = hypervisor_xcall_deliver;
1194}
1195
1196void __devinit smp_fill_in_sib_core_maps(void)
1197{
1198 unsigned int i;
1199
1200 for_each_present_cpu(i) {
1201 unsigned int j;
1202
1203 cpus_clear(cpu_core_map[i]);
1204 if (cpu_data(i).core_id == 0) {
1205 cpu_set(i, cpu_core_map[i]);
1206 continue;
1207 }
1208
1209 for_each_present_cpu(j) {
1210 if (cpu_data(i).core_id ==
1211 cpu_data(j).core_id)
1212 cpu_set(j, cpu_core_map[i]);
1213 }
1214 }
1215
1216 for_each_present_cpu(i) {
1217 unsigned int j;
1218
1219 cpus_clear(per_cpu(cpu_sibling_map, i));
1220 if (cpu_data(i).proc_id == -1) {
1221 cpu_set(i, per_cpu(cpu_sibling_map, i));
1222 continue;
1223 }
1224
1225 for_each_present_cpu(j) {
1226 if (cpu_data(i).proc_id ==
1227 cpu_data(j).proc_id)
1228 cpu_set(j, per_cpu(cpu_sibling_map, i));
1229 }
1230 }
1231}
1232
1233int __cpuinit __cpu_up(unsigned int cpu)
1234{
1235 int ret = smp_boot_one_cpu(cpu);
1236
1237 if (!ret) {
1238 cpu_set(cpu, smp_commenced_mask);
1239 while (!cpu_isset(cpu, cpu_online_map))
1240 mb();
1241 if (!cpu_isset(cpu, cpu_online_map)) {
1242 ret = -ENODEV;
1243 } else {
1244 /* On SUN4V, writes to %tick and %stick are
1245 * not allowed.
1246 */
1247 if (tlb_type != hypervisor)
1248 smp_synchronize_one_tick(cpu);
1249 }
1250 }
1251 return ret;
1252}
1253
1254#ifdef CONFIG_HOTPLUG_CPU
1255void cpu_play_dead(void)
1256{
1257 int cpu = smp_processor_id();
1258 unsigned long pstate;
1259
1260 idle_task_exit();
1261
1262 if (tlb_type == hypervisor) {
1263 struct trap_per_cpu *tb = &trap_block[cpu];
1264
1265 sun4v_cpu_qconf(HV_CPU_QUEUE_CPU_MONDO,
1266 tb->cpu_mondo_pa, 0);
1267 sun4v_cpu_qconf(HV_CPU_QUEUE_DEVICE_MONDO,
1268 tb->dev_mondo_pa, 0);
1269 sun4v_cpu_qconf(HV_CPU_QUEUE_RES_ERROR,
1270 tb->resum_mondo_pa, 0);
1271 sun4v_cpu_qconf(HV_CPU_QUEUE_NONRES_ERROR,
1272 tb->nonresum_mondo_pa, 0);
1273 }
1274
1275 cpu_clear(cpu, smp_commenced_mask);
1276 membar_safe("#Sync");
1277
1278 local_irq_disable();
1279
1280 __asm__ __volatile__(
1281 "rdpr %%pstate, %0\n\t"
1282 "wrpr %0, %1, %%pstate"
1283 : "=r" (pstate)
1284 : "i" (PSTATE_IE));
1285
1286 while (1)
1287 barrier();
1288}
1289
1290int __cpu_disable(void)
1291{
1292 int cpu = smp_processor_id();
1293 cpuinfo_sparc *c;
1294 int i;
1295
1296 for_each_cpu_mask(i, cpu_core_map[cpu])
1297 cpu_clear(cpu, cpu_core_map[i]);
1298 cpus_clear(cpu_core_map[cpu]);
1299
1300 for_each_cpu_mask(i, per_cpu(cpu_sibling_map, cpu))
1301 cpu_clear(cpu, per_cpu(cpu_sibling_map, i));
1302 cpus_clear(per_cpu(cpu_sibling_map, cpu));
1303
1304 c = &cpu_data(cpu);
1305
1306 c->core_id = 0;
1307 c->proc_id = -1;
1308
1309 smp_wmb();
1310
1311 /* Make sure no interrupts point to this cpu. */
1312 fixup_irqs();
1313
1314 local_irq_enable();
1315 mdelay(1);
1316 local_irq_disable();
1317
1318 ipi_call_lock();
1319 cpu_clear(cpu, cpu_online_map);
1320 ipi_call_unlock();
1321
1322 return 0;
1323}
1324
1325void __cpu_die(unsigned int cpu)
1326{
1327 int i;
1328
1329 for (i = 0; i < 100; i++) {
1330 smp_rmb();
1331 if (!cpu_isset(cpu, smp_commenced_mask))
1332 break;
1333 msleep(100);
1334 }
1335 if (cpu_isset(cpu, smp_commenced_mask)) {
1336 printk(KERN_ERR "CPU %u didn't die...\n", cpu);
1337 } else {
1338#if defined(CONFIG_SUN_LDOMS)
1339 unsigned long hv_err;
1340 int limit = 100;
1341
1342 do {
1343 hv_err = sun4v_cpu_stop(cpu);
1344 if (hv_err == HV_EOK) {
1345 cpu_clear(cpu, cpu_present_map);
1346 break;
1347 }
1348 } while (--limit > 0);
1349 if (limit <= 0) {
1350 printk(KERN_ERR "sun4v_cpu_stop() fails err=%lu\n",
1351 hv_err);
1352 }
1353#endif
1354 }
1355}
1356#endif
1357
1358void __init smp_cpus_done(unsigned int max_cpus)
1359{
1360}
1361
1362void smp_send_reschedule(int cpu)
1363{
1364 xcall_deliver((u64) &xcall_receive_signal, 0, 0,
1365 &cpumask_of_cpu(cpu));
1366}
1367
1368void smp_receive_signal_client(int irq, struct pt_regs *regs)
1369{
1370 clear_softint(1 << irq);
1371}
1372
1373/* This is a nop because we capture all other cpus
1374 * anyways when making the PROM active.
1375 */
1376void smp_send_stop(void)
1377{
1378}
1379
1380unsigned long __per_cpu_base __read_mostly;
1381unsigned long __per_cpu_shift __read_mostly;
1382
1383EXPORT_SYMBOL(__per_cpu_base);
1384EXPORT_SYMBOL(__per_cpu_shift);
1385
1386void __init real_setup_per_cpu_areas(void)
1387{
1388 unsigned long paddr, goal, size, i;
1389 char *ptr;
1390
1391 /* Copy section for each CPU (we discard the original) */
1392 goal = PERCPU_ENOUGH_ROOM;
1393
1394 __per_cpu_shift = PAGE_SHIFT;
1395 for (size = PAGE_SIZE; size < goal; size <<= 1UL)
1396 __per_cpu_shift++;
1397
1398 paddr = lmb_alloc(size * NR_CPUS, PAGE_SIZE);
1399 if (!paddr) {
1400 prom_printf("Cannot allocate per-cpu memory.\n");
1401 prom_halt();
1402 }
1403
1404 ptr = __va(paddr);
1405 __per_cpu_base = ptr - __per_cpu_start;
1406
1407 for (i = 0; i < NR_CPUS; i++, ptr += size)
1408 memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
1409
1410 /* Setup %g5 for the boot cpu. */
1411 __local_per_cpu_offset = __per_cpu_offset(smp_processor_id());
1412}
diff --git a/arch/sparc/kernel/sparc_ksyms_64.c b/arch/sparc/kernel/sparc_ksyms_64.c
new file mode 100644
index 000000000000..c450825b3fe5
--- /dev/null
+++ b/arch/sparc/kernel/sparc_ksyms_64.c
@@ -0,0 +1,289 @@
1/* arch/sparc64/kernel/sparc64_ksyms.c: Sparc64 specific ksyms support.
2 *
3 * Copyright (C) 1996, 2007 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
5 * Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz)
6 */
7
8/* Tell string.h we don't want memcpy etc. as cpp defines */
9#define EXPORT_SYMTAB_STROPS
10#define PROMLIB_INTERNAL
11
12#include <linux/module.h>
13#include <linux/types.h>
14#include <linux/string.h>
15#include <linux/sched.h>
16#include <linux/in6.h>
17#include <linux/pci.h>
18#include <linux/interrupt.h>
19#include <linux/fs_struct.h>
20#include <linux/fs.h>
21#include <linux/mm.h>
22#include <linux/socket.h>
23#include <linux/syscalls.h>
24#include <linux/percpu.h>
25#include <linux/init.h>
26#include <linux/rwsem.h>
27#include <net/compat.h>
28
29#include <asm/oplib.h>
30#include <asm/system.h>
31#include <asm/auxio.h>
32#include <asm/pgtable.h>
33#include <asm/io.h>
34#include <asm/irq.h>
35#include <asm/idprom.h>
36#include <asm/elf.h>
37#include <asm/head.h>
38#include <asm/smp.h>
39#include <asm/ptrace.h>
40#include <asm/uaccess.h>
41#include <asm/checksum.h>
42#include <asm/fpumacro.h>
43#include <asm/pgalloc.h>
44#include <asm/cacheflush.h>
45#ifdef CONFIG_SBUS
46#include <asm/dma.h>
47#endif
48#include <asm/ns87303.h>
49#include <asm/timer.h>
50#include <asm/cpudata.h>
51#include <asm/ftrace.h>
52#include <asm/hypervisor.h>
53
54struct poll {
55 int fd;
56 short events;
57 short revents;
58};
59
60extern void die_if_kernel(char *str, struct pt_regs *regs);
61extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
62extern void *__bzero(void *, size_t);
63extern void *__memscan_zero(void *, size_t);
64extern void *__memscan_generic(void *, int, size_t);
65extern int __memcmp(const void *, const void *, __kernel_size_t);
66extern __kernel_size_t strlen(const char *);
67extern void sys_sigsuspend(void);
68extern int compat_sys_ioctl(unsigned int fd, unsigned int cmd, u32 arg);
69extern int (*handle_mathemu)(struct pt_regs *, struct fpustate *);
70extern long sparc32_open(const char __user * filename, int flags, int mode);
71extern int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
72 unsigned long pfn, unsigned long size, pgprot_t prot);
73
74extern int __ashrdi3(int, int);
75
76extern int dump_fpu (struct pt_regs * regs, elf_fpregset_t * fpregs);
77
78extern void xor_vis_2(unsigned long, unsigned long *, unsigned long *);
79extern void xor_vis_3(unsigned long, unsigned long *, unsigned long *,
80 unsigned long *);
81extern void xor_vis_4(unsigned long, unsigned long *, unsigned long *,
82 unsigned long *, unsigned long *);
83extern void xor_vis_5(unsigned long, unsigned long *, unsigned long *,
84 unsigned long *, unsigned long *, unsigned long *);
85
86extern void xor_niagara_2(unsigned long, unsigned long *, unsigned long *);
87extern void xor_niagara_3(unsigned long, unsigned long *, unsigned long *,
88 unsigned long *);
89extern void xor_niagara_4(unsigned long, unsigned long *, unsigned long *,
90 unsigned long *, unsigned long *);
91extern void xor_niagara_5(unsigned long, unsigned long *, unsigned long *,
92 unsigned long *, unsigned long *, unsigned long *);
93
94/* Per-CPU information table */
95EXPORT_PER_CPU_SYMBOL(__cpu_data);
96
97/* used by various drivers */
98#ifdef CONFIG_SMP
99/* Out of line rw-locking implementation. */
100EXPORT_SYMBOL(__read_lock);
101EXPORT_SYMBOL(__read_unlock);
102EXPORT_SYMBOL(__write_lock);
103EXPORT_SYMBOL(__write_unlock);
104EXPORT_SYMBOL(__write_trylock);
105#endif /* CONFIG_SMP */
106
107#ifdef CONFIG_MCOUNT
108EXPORT_SYMBOL(_mcount);
109#endif
110
111EXPORT_SYMBOL(sparc64_get_clock_tick);
112
113/* RW semaphores */
114EXPORT_SYMBOL(__down_read);
115EXPORT_SYMBOL(__down_read_trylock);
116EXPORT_SYMBOL(__down_write);
117EXPORT_SYMBOL(__down_write_trylock);
118EXPORT_SYMBOL(__up_read);
119EXPORT_SYMBOL(__up_write);
120EXPORT_SYMBOL(__downgrade_write);
121
122/* Atomic counter implementation. */
123EXPORT_SYMBOL(atomic_add);
124EXPORT_SYMBOL(atomic_add_ret);
125EXPORT_SYMBOL(atomic_sub);
126EXPORT_SYMBOL(atomic_sub_ret);
127EXPORT_SYMBOL(atomic64_add);
128EXPORT_SYMBOL(atomic64_add_ret);
129EXPORT_SYMBOL(atomic64_sub);
130EXPORT_SYMBOL(atomic64_sub_ret);
131
132/* Atomic bit operations. */
133EXPORT_SYMBOL(test_and_set_bit);
134EXPORT_SYMBOL(test_and_clear_bit);
135EXPORT_SYMBOL(test_and_change_bit);
136EXPORT_SYMBOL(set_bit);
137EXPORT_SYMBOL(clear_bit);
138EXPORT_SYMBOL(change_bit);
139
140EXPORT_SYMBOL(__flushw_user);
141
142EXPORT_SYMBOL(tlb_type);
143EXPORT_SYMBOL(sun4v_chip_type);
144EXPORT_SYMBOL(get_fb_unmapped_area);
145EXPORT_SYMBOL(flush_icache_range);
146
147EXPORT_SYMBOL(flush_dcache_page);
148#ifdef DCACHE_ALIASING_POSSIBLE
149EXPORT_SYMBOL(__flush_dcache_range);
150#endif
151
152EXPORT_SYMBOL(sun4v_niagara_getperf);
153EXPORT_SYMBOL(sun4v_niagara_setperf);
154EXPORT_SYMBOL(sun4v_niagara2_getperf);
155EXPORT_SYMBOL(sun4v_niagara2_setperf);
156
157#ifdef CONFIG_SUN_AUXIO
158EXPORT_SYMBOL(auxio_set_led);
159EXPORT_SYMBOL(auxio_set_lte);
160#endif
161#ifdef CONFIG_SBUS
162EXPORT_SYMBOL(sbus_set_sbus64);
163#endif
164EXPORT_SYMBOL(outsb);
165EXPORT_SYMBOL(outsw);
166EXPORT_SYMBOL(outsl);
167EXPORT_SYMBOL(insb);
168EXPORT_SYMBOL(insw);
169EXPORT_SYMBOL(insl);
170#ifdef CONFIG_PCI
171EXPORT_SYMBOL(pci_alloc_consistent);
172EXPORT_SYMBOL(pci_free_consistent);
173EXPORT_SYMBOL(pci_map_single);
174EXPORT_SYMBOL(pci_unmap_single);
175EXPORT_SYMBOL(pci_map_sg);
176EXPORT_SYMBOL(pci_unmap_sg);
177EXPORT_SYMBOL(pci_dma_sync_single_for_cpu);
178EXPORT_SYMBOL(pci_dma_sync_sg_for_cpu);
179EXPORT_SYMBOL(pci_dma_supported);
180#endif
181
182/* I/O device mmaping on Sparc64. */
183EXPORT_SYMBOL(io_remap_pfn_range);
184
185EXPORT_SYMBOL(dump_fpu);
186EXPORT_SYMBOL(put_fs_struct);
187
188/* math-emu wants this */
189EXPORT_SYMBOL(die_if_kernel);
190
191/* Kernel thread creation. */
192EXPORT_SYMBOL(kernel_thread);
193
194/* prom symbols */
195EXPORT_SYMBOL(idprom);
196EXPORT_SYMBOL(prom_root_node);
197EXPORT_SYMBOL(prom_getchild);
198EXPORT_SYMBOL(prom_getsibling);
199EXPORT_SYMBOL(prom_searchsiblings);
200EXPORT_SYMBOL(prom_firstprop);
201EXPORT_SYMBOL(prom_nextprop);
202EXPORT_SYMBOL(prom_getproplen);
203EXPORT_SYMBOL(prom_getproperty);
204EXPORT_SYMBOL(prom_node_has_property);
205EXPORT_SYMBOL(prom_setprop);
206EXPORT_SYMBOL(saved_command_line);
207EXPORT_SYMBOL(prom_finddevice);
208EXPORT_SYMBOL(prom_feval);
209EXPORT_SYMBOL(prom_getbool);
210EXPORT_SYMBOL(prom_getstring);
211EXPORT_SYMBOL(prom_getint);
212EXPORT_SYMBOL(prom_getintdefault);
213EXPORT_SYMBOL(__prom_getchild);
214EXPORT_SYMBOL(__prom_getsibling);
215
216/* sparc library symbols */
217EXPORT_SYMBOL(strlen);
218EXPORT_SYMBOL(__strlen_user);
219EXPORT_SYMBOL(__strnlen_user);
220
221/* Special internal versions of library functions. */
222EXPORT_SYMBOL(_clear_page);
223EXPORT_SYMBOL(clear_user_page);
224EXPORT_SYMBOL(copy_user_page);
225EXPORT_SYMBOL(__bzero);
226EXPORT_SYMBOL(__memscan_zero);
227EXPORT_SYMBOL(__memscan_generic);
228EXPORT_SYMBOL(__memcmp);
229EXPORT_SYMBOL(__memset);
230
231EXPORT_SYMBOL(csum_partial);
232EXPORT_SYMBOL(csum_partial_copy_nocheck);
233EXPORT_SYMBOL(__csum_partial_copy_from_user);
234EXPORT_SYMBOL(__csum_partial_copy_to_user);
235EXPORT_SYMBOL(ip_fast_csum);
236
237/* Moving data to/from/in userspace. */
238EXPORT_SYMBOL(___copy_to_user);
239EXPORT_SYMBOL(___copy_from_user);
240EXPORT_SYMBOL(___copy_in_user);
241EXPORT_SYMBOL(copy_to_user_fixup);
242EXPORT_SYMBOL(copy_from_user_fixup);
243EXPORT_SYMBOL(copy_in_user_fixup);
244EXPORT_SYMBOL(__strncpy_from_user);
245EXPORT_SYMBOL(__clear_user);
246
247/* Various address conversion macros use this. */
248EXPORT_SYMBOL(sparc64_valid_addr_bitmap);
249
250/* No version information on this, heavily used in inline asm,
251 * and will always be 'void __ret_efault(void)'.
252 */
253EXPORT_SYMBOL(__ret_efault);
254
255/* No version information on these, as gcc produces such symbols. */
256EXPORT_SYMBOL(memcmp);
257EXPORT_SYMBOL(memcpy);
258EXPORT_SYMBOL(memset);
259EXPORT_SYMBOL(memmove);
260EXPORT_SYMBOL(strncmp);
261
262void VISenter(void);
263/* RAID code needs this */
264EXPORT_SYMBOL(VISenter);
265
266/* for input/keybdev */
267EXPORT_SYMBOL(sun_do_break);
268EXPORT_SYMBOL(stop_a_enabled);
269
270#ifdef CONFIG_DEBUG_BUGVERBOSE
271EXPORT_SYMBOL(do_BUG);
272#endif
273
274/* for ns8703 */
275EXPORT_SYMBOL(ns87303_lock);
276
277EXPORT_SYMBOL(tick_ops);
278
279EXPORT_SYMBOL(xor_vis_2);
280EXPORT_SYMBOL(xor_vis_3);
281EXPORT_SYMBOL(xor_vis_4);
282EXPORT_SYMBOL(xor_vis_5);
283
284EXPORT_SYMBOL(xor_niagara_2);
285EXPORT_SYMBOL(xor_niagara_3);
286EXPORT_SYMBOL(xor_niagara_4);
287EXPORT_SYMBOL(xor_niagara_5);
288
289EXPORT_SYMBOL_GPL(real_hard_smp_processor_id);
diff --git a/arch/sparc/kernel/spiterrs.S b/arch/sparc/kernel/spiterrs.S
new file mode 100644
index 000000000000..c357e40ffd01
--- /dev/null
+++ b/arch/sparc/kernel/spiterrs.S
@@ -0,0 +1,245 @@
1 /* We need to carefully read the error status, ACK the errors,
2 * prevent recursive traps, and pass the information on to C
3 * code for logging.
4 *
5 * We pass the AFAR in as-is, and we encode the status
6 * information as described in asm-sparc64/sfafsr.h
7 */
8 .type __spitfire_access_error,#function
9__spitfire_access_error:
10 /* Disable ESTATE error reporting so that we do not take
11 * recursive traps and RED state the processor.
12 */
13 stxa %g0, [%g0] ASI_ESTATE_ERROR_EN
14 membar #Sync
15
16 mov UDBE_UE, %g1
17 ldxa [%g0] ASI_AFSR, %g4 ! Get AFSR
18
19 /* __spitfire_cee_trap branches here with AFSR in %g4 and
20 * UDBE_CE in %g1. It only clears ESTATE_ERR_CE in the ESTATE
21 * Error Enable register.
22 */
23__spitfire_cee_trap_continue:
24 ldxa [%g0] ASI_AFAR, %g5 ! Get AFAR
25
26 rdpr %tt, %g3
27 and %g3, 0x1ff, %g3 ! Paranoia
28 sllx %g3, SFSTAT_TRAP_TYPE_SHIFT, %g3
29 or %g4, %g3, %g4
30 rdpr %tl, %g3
31 cmp %g3, 1
32 mov 1, %g3
33 bleu %xcc, 1f
34 sllx %g3, SFSTAT_TL_GT_ONE_SHIFT, %g3
35
36 or %g4, %g3, %g4
37
38 /* Read in the UDB error register state, clearing the sticky
39 * error bits as-needed. We only clear them if the UE bit is
40 * set. Likewise, __spitfire_cee_trap below will only do so
41 * if the CE bit is set.
42 *
43 * NOTE: UltraSparc-I/II have high and low UDB error
44 * registers, corresponding to the two UDB units
45 * present on those chips. UltraSparc-IIi only
46 * has a single UDB, called "SDB" in the manual.
47 * For IIi the upper UDB register always reads
48 * as zero so for our purposes things will just
49 * work with the checks below.
50 */
511: ldxa [%g0] ASI_UDBH_ERROR_R, %g3
52 and %g3, 0x3ff, %g7 ! Paranoia
53 sllx %g7, SFSTAT_UDBH_SHIFT, %g7
54 or %g4, %g7, %g4
55 andcc %g3, %g1, %g3 ! UDBE_UE or UDBE_CE
56 be,pn %xcc, 1f
57 nop
58 stxa %g3, [%g0] ASI_UDB_ERROR_W
59 membar #Sync
60
611: mov 0x18, %g3
62 ldxa [%g3] ASI_UDBL_ERROR_R, %g3
63 and %g3, 0x3ff, %g7 ! Paranoia
64 sllx %g7, SFSTAT_UDBL_SHIFT, %g7
65 or %g4, %g7, %g4
66 andcc %g3, %g1, %g3 ! UDBE_UE or UDBE_CE
67 be,pn %xcc, 1f
68 nop
69 mov 0x18, %g7
70 stxa %g3, [%g7] ASI_UDB_ERROR_W
71 membar #Sync
72
731: /* Ok, now that we've latched the error state, clear the
74 * sticky bits in the AFSR.
75 */
76 stxa %g4, [%g0] ASI_AFSR
77 membar #Sync
78
79 rdpr %tl, %g2
80 cmp %g2, 1
81 rdpr %pil, %g2
82 bleu,pt %xcc, 1f
83 wrpr %g0, PIL_NORMAL_MAX, %pil
84
85 ba,pt %xcc, etraptl1
86 rd %pc, %g7
87
88 ba,pt %xcc, 2f
89 nop
90
911: ba,pt %xcc, etrap_irq
92 rd %pc, %g7
93
942:
95#ifdef CONFIG_TRACE_IRQFLAGS
96 call trace_hardirqs_off
97 nop
98#endif
99 mov %l4, %o1
100 mov %l5, %o2
101 call spitfire_access_error
102 add %sp, PTREGS_OFF, %o0
103 ba,pt %xcc, rtrap
104 nop
105 .size __spitfire_access_error,.-__spitfire_access_error
106
107 /* This is the trap handler entry point for ECC correctable
108 * errors. They are corrected, but we listen for the trap so
109 * that the event can be logged.
110 *
111 * Disrupting errors are either:
112 * 1) single-bit ECC errors during UDB reads to system
113 * memory
114 * 2) data parity errors during write-back events
115 *
116 * As far as I can make out from the manual, the CEE trap is
117 * only for correctable errors during memory read accesses by
118 * the front-end of the processor.
119 *
120 * The code below is only for trap level 1 CEE events, as it
121 * is the only situation where we can safely record and log.
122 * For trap level >1 we just clear the CE bit in the AFSR and
123 * return.
124 *
125 * This is just like __spiftire_access_error above, but it
126 * specifically handles correctable errors. If an
127 * uncorrectable error is indicated in the AFSR we will branch
128 * directly above to __spitfire_access_error to handle it
129 * instead. Uncorrectable therefore takes priority over
130 * correctable, and the error logging C code will notice this
131 * case by inspecting the trap type.
132 */
133 .type __spitfire_cee_trap,#function
134__spitfire_cee_trap:
135 ldxa [%g0] ASI_AFSR, %g4 ! Get AFSR
136 mov 1, %g3
137 sllx %g3, SFAFSR_UE_SHIFT, %g3
138 andcc %g4, %g3, %g0 ! Check for UE
139 bne,pn %xcc, __spitfire_access_error
140 nop
141
142 /* Ok, in this case we only have a correctable error.
143 * Indicate we only wish to capture that state in register
144 * %g1, and we only disable CE error reporting unlike UE
145 * handling which disables all errors.
146 */
147 ldxa [%g0] ASI_ESTATE_ERROR_EN, %g3
148 andn %g3, ESTATE_ERR_CE, %g3
149 stxa %g3, [%g0] ASI_ESTATE_ERROR_EN
150 membar #Sync
151
152 /* Preserve AFSR in %g4, indicate UDB state to capture in %g1 */
153 ba,pt %xcc, __spitfire_cee_trap_continue
154 mov UDBE_CE, %g1
155 .size __spitfire_cee_trap,.-__spitfire_cee_trap
156
157 .type __spitfire_data_access_exception_tl1,#function
158__spitfire_data_access_exception_tl1:
159 rdpr %pstate, %g4
160 wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate
161 mov TLB_SFSR, %g3
162 mov DMMU_SFAR, %g5
163 ldxa [%g3] ASI_DMMU, %g4 ! Get SFSR
164 ldxa [%g5] ASI_DMMU, %g5 ! Get SFAR
165 stxa %g0, [%g3] ASI_DMMU ! Clear SFSR.FaultValid bit
166 membar #Sync
167 rdpr %tt, %g3
168 cmp %g3, 0x80 ! first win spill/fill trap
169 blu,pn %xcc, 1f
170 cmp %g3, 0xff ! last win spill/fill trap
171 bgu,pn %xcc, 1f
172 nop
173 ba,pt %xcc, winfix_dax
174 rdpr %tpc, %g3
1751: sethi %hi(109f), %g7
176 ba,pt %xcc, etraptl1
177109: or %g7, %lo(109b), %g7
178 mov %l4, %o1
179 mov %l5, %o2
180 call spitfire_data_access_exception_tl1
181 add %sp, PTREGS_OFF, %o0
182 ba,pt %xcc, rtrap
183 nop
184 .size __spitfire_data_access_exception_tl1,.-__spitfire_data_access_exception_tl1
185
186 .type __spitfire_data_access_exception,#function
187__spitfire_data_access_exception:
188 rdpr %pstate, %g4
189 wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate
190 mov TLB_SFSR, %g3
191 mov DMMU_SFAR, %g5
192 ldxa [%g3] ASI_DMMU, %g4 ! Get SFSR
193 ldxa [%g5] ASI_DMMU, %g5 ! Get SFAR
194 stxa %g0, [%g3] ASI_DMMU ! Clear SFSR.FaultValid bit
195 membar #Sync
196 sethi %hi(109f), %g7
197 ba,pt %xcc, etrap
198109: or %g7, %lo(109b), %g7
199 mov %l4, %o1
200 mov %l5, %o2
201 call spitfire_data_access_exception
202 add %sp, PTREGS_OFF, %o0
203 ba,pt %xcc, rtrap
204 nop
205 .size __spitfire_data_access_exception,.-__spitfire_data_access_exception
206
207 .type __spitfire_insn_access_exception_tl1,#function
208__spitfire_insn_access_exception_tl1:
209 rdpr %pstate, %g4
210 wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate
211 mov TLB_SFSR, %g3
212 ldxa [%g3] ASI_IMMU, %g4 ! Get SFSR
213 rdpr %tpc, %g5 ! IMMU has no SFAR, use TPC
214 stxa %g0, [%g3] ASI_IMMU ! Clear FaultValid bit
215 membar #Sync
216 sethi %hi(109f), %g7
217 ba,pt %xcc, etraptl1
218109: or %g7, %lo(109b), %g7
219 mov %l4, %o1
220 mov %l5, %o2
221 call spitfire_insn_access_exception_tl1
222 add %sp, PTREGS_OFF, %o0
223 ba,pt %xcc, rtrap
224 nop
225 .size __spitfire_insn_access_exception_tl1,.-__spitfire_insn_access_exception_tl1
226
227 .type __spitfire_insn_access_exception,#function
228__spitfire_insn_access_exception:
229 rdpr %pstate, %g4
230 wrpr %g4, PSTATE_MG|PSTATE_AG, %pstate
231 mov TLB_SFSR, %g3
232 ldxa [%g3] ASI_IMMU, %g4 ! Get SFSR
233 rdpr %tpc, %g5 ! IMMU has no SFAR, use TPC
234 stxa %g0, [%g3] ASI_IMMU ! Clear FaultValid bit
235 membar #Sync
236 sethi %hi(109f), %g7
237 ba,pt %xcc, etrap
238109: or %g7, %lo(109b), %g7
239 mov %l4, %o1
240 mov %l5, %o2
241 call spitfire_insn_access_exception
242 add %sp, PTREGS_OFF, %o0
243 ba,pt %xcc, rtrap
244 nop
245 .size __spitfire_insn_access_exception,.-__spitfire_insn_access_exception
diff --git a/arch/sparc/kernel/sstate.c b/arch/sparc/kernel/sstate.c
new file mode 100644
index 000000000000..8cdbe5946b43
--- /dev/null
+++ b/arch/sparc/kernel/sstate.c
@@ -0,0 +1,127 @@
1/* sstate.c: System soft state support.
2 *
3 * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
4 */
5
6#include <linux/kernel.h>
7#include <linux/notifier.h>
8#include <linux/reboot.h>
9#include <linux/init.h>
10
11#include <asm/hypervisor.h>
12#include <asm/spitfire.h>
13#include <asm/oplib.h>
14#include <asm/head.h>
15#include <asm/io.h>
16
17static int hv_supports_soft_state;
18
19static unsigned long kimage_addr_to_ra(const char *p)
20{
21 unsigned long val = (unsigned long) p;
22
23 return kern_base + (val - KERNBASE);
24}
25
26static void do_set_sstate(unsigned long state, const char *msg)
27{
28 unsigned long err;
29
30 if (!hv_supports_soft_state)
31 return;
32
33 err = sun4v_mach_set_soft_state(state, kimage_addr_to_ra(msg));
34 if (err) {
35 printk(KERN_WARNING "SSTATE: Failed to set soft-state to "
36 "state[%lx] msg[%s], err=%lu\n",
37 state, msg, err);
38 }
39}
40
41static const char booting_msg[32] __attribute__((aligned(32))) =
42 "Linux booting";
43static const char running_msg[32] __attribute__((aligned(32))) =
44 "Linux running";
45static const char halting_msg[32] __attribute__((aligned(32))) =
46 "Linux halting";
47static const char poweroff_msg[32] __attribute__((aligned(32))) =
48 "Linux powering off";
49static const char rebooting_msg[32] __attribute__((aligned(32))) =
50 "Linux rebooting";
51static const char panicing_msg[32] __attribute__((aligned(32))) =
52 "Linux panicing";
53
54static int sstate_reboot_call(struct notifier_block *np, unsigned long type, void *_unused)
55{
56 const char *msg;
57
58 switch (type) {
59 case SYS_DOWN:
60 default:
61 msg = rebooting_msg;
62 break;
63
64 case SYS_HALT:
65 msg = halting_msg;
66 break;
67
68 case SYS_POWER_OFF:
69 msg = poweroff_msg;
70 break;
71 }
72
73 do_set_sstate(HV_SOFT_STATE_TRANSITION, msg);
74
75 return NOTIFY_OK;
76}
77
78static struct notifier_block sstate_reboot_notifier = {
79 .notifier_call = sstate_reboot_call,
80};
81
82static int sstate_panic_event(struct notifier_block *n, unsigned long event, void *ptr)
83{
84 do_set_sstate(HV_SOFT_STATE_TRANSITION, panicing_msg);
85
86 return NOTIFY_DONE;
87}
88
89static struct notifier_block sstate_panic_block = {
90 .notifier_call = sstate_panic_event,
91 .priority = INT_MAX,
92};
93
94static int __init sstate_init(void)
95{
96 unsigned long major, minor;
97
98 if (tlb_type != hypervisor)
99 return 0;
100
101 major = 1;
102 minor = 0;
103 if (sun4v_hvapi_register(HV_GRP_SOFT_STATE, major, &minor))
104 return 0;
105
106 hv_supports_soft_state = 1;
107
108 prom_sun4v_guest_soft_state();
109
110 do_set_sstate(HV_SOFT_STATE_TRANSITION, booting_msg);
111
112 atomic_notifier_chain_register(&panic_notifier_list,
113 &sstate_panic_block);
114 register_reboot_notifier(&sstate_reboot_notifier);
115
116 return 0;
117}
118
119core_initcall(sstate_init);
120
121static int __init sstate_running(void)
122{
123 do_set_sstate(HV_SOFT_STATE_NORMAL, running_msg);
124 return 0;
125}
126
127late_initcall(sstate_running);
diff --git a/arch/sparc/kernel/stacktrace.c b/arch/sparc/kernel/stacktrace.c
new file mode 100644
index 000000000000..acb12f673757
--- /dev/null
+++ b/arch/sparc/kernel/stacktrace.c
@@ -0,0 +1,64 @@
1#include <linux/sched.h>
2#include <linux/stacktrace.h>
3#include <linux/thread_info.h>
4#include <linux/module.h>
5#include <asm/ptrace.h>
6#include <asm/stacktrace.h>
7
8#include "kstack.h"
9
10static void __save_stack_trace(struct thread_info *tp,
11 struct stack_trace *trace,
12 bool skip_sched)
13{
14 unsigned long ksp, fp;
15
16 if (tp == current_thread_info()) {
17 stack_trace_flush();
18 __asm__ __volatile__("mov %%fp, %0" : "=r" (ksp));
19 } else {
20 ksp = tp->ksp;
21 }
22
23 fp = ksp + STACK_BIAS;
24 do {
25 struct sparc_stackf *sf;
26 struct pt_regs *regs;
27 unsigned long pc;
28
29 if (!kstack_valid(tp, fp))
30 break;
31
32 sf = (struct sparc_stackf *) fp;
33 regs = (struct pt_regs *) (sf + 1);
34
35 if (kstack_is_trap_frame(tp, regs)) {
36 if (!(regs->tstate & TSTATE_PRIV))
37 break;
38 pc = regs->tpc;
39 fp = regs->u_regs[UREG_I6] + STACK_BIAS;
40 } else {
41 pc = sf->callers_pc;
42 fp = (unsigned long)sf->fp + STACK_BIAS;
43 }
44
45 if (trace->skip > 0)
46 trace->skip--;
47 else if (!skip_sched || !in_sched_functions(pc))
48 trace->entries[trace->nr_entries++] = pc;
49 } while (trace->nr_entries < trace->max_entries);
50}
51
52void save_stack_trace(struct stack_trace *trace)
53{
54 __save_stack_trace(current_thread_info(), trace, false);
55}
56EXPORT_SYMBOL_GPL(save_stack_trace);
57
58void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
59{
60 struct thread_info *tp = task_thread_info(tsk);
61
62 __save_stack_trace(tp, trace, true);
63}
64EXPORT_SYMBOL_GPL(save_stack_trace_tsk);
diff --git a/arch/sparc/kernel/starfire.c b/arch/sparc/kernel/starfire.c
new file mode 100644
index 000000000000..060d0f3a6151
--- /dev/null
+++ b/arch/sparc/kernel/starfire.c
@@ -0,0 +1,116 @@
1/*
2 * starfire.c: Starfire/E10000 support.
3 *
4 * Copyright (C) 1998 David S. Miller (davem@redhat.com)
5 * Copyright (C) 2000 Anton Blanchard (anton@samba.org)
6 */
7
8#include <linux/kernel.h>
9#include <linux/slab.h>
10
11#include <asm/page.h>
12#include <asm/oplib.h>
13#include <asm/smp.h>
14#include <asm/upa.h>
15#include <asm/starfire.h>
16
17/*
18 * A few places around the kernel check this to see if
19 * they need to call us to do things in a Starfire specific
20 * way.
21 */
22int this_is_starfire = 0;
23
24void check_if_starfire(void)
25{
26 int ssnode = prom_finddevice("/ssp-serial");
27 if (ssnode != 0 && ssnode != -1)
28 this_is_starfire = 1;
29}
30
31int starfire_hard_smp_processor_id(void)
32{
33 return upa_readl(0x1fff40000d0UL);
34}
35
36/*
37 * Each Starfire board has 32 registers which perform translation
38 * and delivery of traditional interrupt packets into the extended
39 * Starfire hardware format. Essentially UPAID's now have 2 more
40 * bits than in all previous Sun5 systems.
41 */
42struct starfire_irqinfo {
43 unsigned long imap_slots[32];
44 unsigned long tregs[32];
45 struct starfire_irqinfo *next;
46 int upaid, hwmid;
47};
48
49static struct starfire_irqinfo *sflist = NULL;
50
51/* Beam me up Scott(McNeil)y... */
52void starfire_hookup(int upaid)
53{
54 struct starfire_irqinfo *p;
55 unsigned long treg_base, hwmid, i;
56
57 p = kmalloc(sizeof(*p), GFP_KERNEL);
58 if (!p) {
59 prom_printf("starfire_hookup: No memory, this is insane.\n");
60 prom_halt();
61 }
62 treg_base = 0x100fc000000UL;
63 hwmid = ((upaid & 0x3c) << 1) |
64 ((upaid & 0x40) >> 4) |
65 (upaid & 0x3);
66 p->hwmid = hwmid;
67 treg_base += (hwmid << 33UL);
68 treg_base += 0x200UL;
69 for (i = 0; i < 32; i++) {
70 p->imap_slots[i] = 0UL;
71 p->tregs[i] = treg_base + (i * 0x10UL);
72 /* Lets play it safe and not overwrite existing mappings */
73 if (upa_readl(p->tregs[i]) != 0)
74 p->imap_slots[i] = 0xdeadbeaf;
75 }
76 p->upaid = upaid;
77 p->next = sflist;
78 sflist = p;
79}
80
81unsigned int starfire_translate(unsigned long imap,
82 unsigned int upaid)
83{
84 struct starfire_irqinfo *p;
85 unsigned int bus_hwmid;
86 unsigned int i;
87
88 bus_hwmid = (((unsigned long)imap) >> 33) & 0x7f;
89 for (p = sflist; p != NULL; p = p->next)
90 if (p->hwmid == bus_hwmid)
91 break;
92 if (p == NULL) {
93 prom_printf("XFIRE: Cannot find irqinfo for imap %016lx\n",
94 ((unsigned long)imap));
95 prom_halt();
96 }
97 for (i = 0; i < 32; i++) {
98 if (p->imap_slots[i] == imap ||
99 p->imap_slots[i] == 0UL)
100 break;
101 }
102 if (i == 32) {
103 printk("starfire_translate: Are you kidding me?\n");
104 panic("Lucy in the sky....");
105 }
106 p->imap_slots[i] = imap;
107
108 /* map to real upaid */
109 upaid = (((upaid & 0x3c) << 1) |
110 ((upaid & 0x40) >> 4) |
111 (upaid & 0x3));
112
113 upa_writel(upaid, p->tregs[i]);
114
115 return i;
116}
diff --git a/arch/sparc/kernel/sun4v_ivec.S b/arch/sparc/kernel/sun4v_ivec.S
new file mode 100644
index 000000000000..559bc5e9c199
--- /dev/null
+++ b/arch/sparc/kernel/sun4v_ivec.S
@@ -0,0 +1,341 @@
1/* sun4v_ivec.S: Sun4v interrupt vector handling.
2 *
3 * Copyright (C) 2006 <davem@davemloft.net>
4 */
5
6#include <asm/cpudata.h>
7#include <asm/intr_queue.h>
8#include <asm/pil.h>
9
10 .text
11 .align 32
12
13sun4v_cpu_mondo:
14 /* Head offset in %g2, tail offset in %g4.
15 * If they are the same, no work.
16 */
17 mov INTRQ_CPU_MONDO_HEAD, %g2
18 ldxa [%g2] ASI_QUEUE, %g2
19 mov INTRQ_CPU_MONDO_TAIL, %g4
20 ldxa [%g4] ASI_QUEUE, %g4
21 cmp %g2, %g4
22 be,pn %xcc, sun4v_cpu_mondo_queue_empty
23 nop
24
25 /* Get &trap_block[smp_processor_id()] into %g4. */
26 ldxa [%g0] ASI_SCRATCHPAD, %g4
27 sub %g4, TRAP_PER_CPU_FAULT_INFO, %g4
28
29 /* Get CPU mondo queue base phys address into %g7. */
30 ldx [%g4 + TRAP_PER_CPU_CPU_MONDO_PA], %g7
31
32 /* Now get the cross-call arguments and handler PC, same
33 * layout as sun4u:
34 *
35 * 1st 64-bit word: low half is 32-bit PC, put into %g3 and jmpl to it
36 * high half is context arg to MMU flushes, into %g5
37 * 2nd 64-bit word: 64-bit arg, load into %g1
38 * 3rd 64-bit word: 64-bit arg, load into %g7
39 */
40 ldxa [%g7 + %g2] ASI_PHYS_USE_EC, %g3
41 add %g2, 0x8, %g2
42 srlx %g3, 32, %g5
43 ldxa [%g7 + %g2] ASI_PHYS_USE_EC, %g1
44 add %g2, 0x8, %g2
45 srl %g3, 0, %g3
46 ldxa [%g7 + %g2] ASI_PHYS_USE_EC, %g7
47 add %g2, 0x40 - 0x8 - 0x8, %g2
48
49 /* Update queue head pointer. */
50 lduw [%g4 + TRAP_PER_CPU_CPU_MONDO_QMASK], %g4
51 and %g2, %g4, %g2
52
53 mov INTRQ_CPU_MONDO_HEAD, %g4
54 stxa %g2, [%g4] ASI_QUEUE
55 membar #Sync
56
57 jmpl %g3, %g0
58 nop
59
60sun4v_cpu_mondo_queue_empty:
61 retry
62
63sun4v_dev_mondo:
64 /* Head offset in %g2, tail offset in %g4. */
65 mov INTRQ_DEVICE_MONDO_HEAD, %g2
66 ldxa [%g2] ASI_QUEUE, %g2
67 mov INTRQ_DEVICE_MONDO_TAIL, %g4
68 ldxa [%g4] ASI_QUEUE, %g4
69 cmp %g2, %g4
70 be,pn %xcc, sun4v_dev_mondo_queue_empty
71 nop
72
73 /* Get &trap_block[smp_processor_id()] into %g4. */
74 ldxa [%g0] ASI_SCRATCHPAD, %g4
75 sub %g4, TRAP_PER_CPU_FAULT_INFO, %g4
76
77 /* Get DEV mondo queue base phys address into %g5. */
78 ldx [%g4 + TRAP_PER_CPU_DEV_MONDO_PA], %g5
79
80 /* Load IVEC into %g3. */
81 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
82 add %g2, 0x40, %g2
83
84 /* XXX There can be a full 64-byte block of data here.
85 * XXX This is how we can get at MSI vector data.
86 * XXX Current we do not capture this, but when we do we'll
87 * XXX need to add a 64-byte storage area in the struct ino_bucket
88 * XXX or the struct irq_desc.
89 */
90
91 /* Update queue head pointer, this frees up some registers. */
92 lduw [%g4 + TRAP_PER_CPU_DEV_MONDO_QMASK], %g4
93 and %g2, %g4, %g2
94
95 mov INTRQ_DEVICE_MONDO_HEAD, %g4
96 stxa %g2, [%g4] ASI_QUEUE
97 membar #Sync
98
99 TRAP_LOAD_IRQ_WORK_PA(%g1, %g4)
100
101 /* For VIRQs, cookie is encoded as ~bucket_phys_addr */
102 brlz,pt %g3, 1f
103 xnor %g3, %g0, %g4
104
105 /* Get __pa(&ivector_table[IVEC]) into %g4. */
106 sethi %hi(ivector_table_pa), %g4
107 ldx [%g4 + %lo(ivector_table_pa)], %g4
108 sllx %g3, 4, %g3
109 add %g4, %g3, %g4
110
1111: ldx [%g1], %g2
112 stxa %g2, [%g4] ASI_PHYS_USE_EC
113 stx %g4, [%g1]
114
115 /* Signal the interrupt by setting (1 << pil) in %softint. */
116 wr %g0, 1 << PIL_DEVICE_IRQ, %set_softint
117
118sun4v_dev_mondo_queue_empty:
119 retry
120
121sun4v_res_mondo:
122 /* Head offset in %g2, tail offset in %g4. */
123 mov INTRQ_RESUM_MONDO_HEAD, %g2
124 ldxa [%g2] ASI_QUEUE, %g2
125 mov INTRQ_RESUM_MONDO_TAIL, %g4
126 ldxa [%g4] ASI_QUEUE, %g4
127 cmp %g2, %g4
128 be,pn %xcc, sun4v_res_mondo_queue_empty
129 nop
130
131 /* Get &trap_block[smp_processor_id()] into %g3. */
132 ldxa [%g0] ASI_SCRATCHPAD, %g3
133 sub %g3, TRAP_PER_CPU_FAULT_INFO, %g3
134
135 /* Get RES mondo queue base phys address into %g5. */
136 ldx [%g3 + TRAP_PER_CPU_RESUM_MONDO_PA], %g5
137
138 /* Get RES kernel buffer base phys address into %g7. */
139 ldx [%g3 + TRAP_PER_CPU_RESUM_KBUF_PA], %g7
140
141 /* If the first word is non-zero, queue is full. */
142 ldxa [%g7 + %g2] ASI_PHYS_USE_EC, %g1
143 brnz,pn %g1, sun4v_res_mondo_queue_full
144 nop
145
146 lduw [%g3 + TRAP_PER_CPU_RESUM_QMASK], %g4
147
148 /* Remember this entry's offset in %g1. */
149 mov %g2, %g1
150
151 /* Copy 64-byte queue entry into kernel buffer. */
152 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
153 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
154 add %g2, 0x08, %g2
155 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
156 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
157 add %g2, 0x08, %g2
158 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
159 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
160 add %g2, 0x08, %g2
161 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
162 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
163 add %g2, 0x08, %g2
164 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
165 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
166 add %g2, 0x08, %g2
167 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
168 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
169 add %g2, 0x08, %g2
170 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
171 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
172 add %g2, 0x08, %g2
173 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
174 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
175 add %g2, 0x08, %g2
176
177 /* Update queue head pointer. */
178 and %g2, %g4, %g2
179
180 mov INTRQ_RESUM_MONDO_HEAD, %g4
181 stxa %g2, [%g4] ASI_QUEUE
182 membar #Sync
183
184 /* Disable interrupts and save register state so we can call
185 * C code. The etrap handling will leave %g4 in %l4 for us
186 * when it's done.
187 */
188 rdpr %pil, %g2
189 wrpr %g0, PIL_NORMAL_MAX, %pil
190 mov %g1, %g4
191 ba,pt %xcc, etrap_irq
192 rd %pc, %g7
193#ifdef CONFIG_TRACE_IRQFLAGS
194 call trace_hardirqs_off
195 nop
196#endif
197 /* Log the event. */
198 add %sp, PTREGS_OFF, %o0
199 call sun4v_resum_error
200 mov %l4, %o1
201
202 /* Return from trap. */
203 ba,pt %xcc, rtrap_irq
204 nop
205
206sun4v_res_mondo_queue_empty:
207 retry
208
209sun4v_res_mondo_queue_full:
210 /* The queue is full, consolidate our damage by setting
211 * the head equal to the tail. We'll just trap again otherwise.
212 * Call C code to log the event.
213 */
214 mov INTRQ_RESUM_MONDO_HEAD, %g2
215 stxa %g4, [%g2] ASI_QUEUE
216 membar #Sync
217
218 rdpr %pil, %g2
219 wrpr %g0, PIL_NORMAL_MAX, %pil
220 ba,pt %xcc, etrap_irq
221 rd %pc, %g7
222#ifdef CONFIG_TRACE_IRQFLAGS
223 call trace_hardirqs_off
224 nop
225#endif
226 call sun4v_resum_overflow
227 add %sp, PTREGS_OFF, %o0
228
229 ba,pt %xcc, rtrap_irq
230 nop
231
232sun4v_nonres_mondo:
233 /* Head offset in %g2, tail offset in %g4. */
234 mov INTRQ_NONRESUM_MONDO_HEAD, %g2
235 ldxa [%g2] ASI_QUEUE, %g2
236 mov INTRQ_NONRESUM_MONDO_TAIL, %g4
237 ldxa [%g4] ASI_QUEUE, %g4
238 cmp %g2, %g4
239 be,pn %xcc, sun4v_nonres_mondo_queue_empty
240 nop
241
242 /* Get &trap_block[smp_processor_id()] into %g3. */
243 ldxa [%g0] ASI_SCRATCHPAD, %g3
244 sub %g3, TRAP_PER_CPU_FAULT_INFO, %g3
245
246 /* Get RES mondo queue base phys address into %g5. */
247 ldx [%g3 + TRAP_PER_CPU_NONRESUM_MONDO_PA], %g5
248
249 /* Get RES kernel buffer base phys address into %g7. */
250 ldx [%g3 + TRAP_PER_CPU_NONRESUM_KBUF_PA], %g7
251
252 /* If the first word is non-zero, queue is full. */
253 ldxa [%g7 + %g2] ASI_PHYS_USE_EC, %g1
254 brnz,pn %g1, sun4v_nonres_mondo_queue_full
255 nop
256
257 lduw [%g3 + TRAP_PER_CPU_NONRESUM_QMASK], %g4
258
259 /* Remember this entry's offset in %g1. */
260 mov %g2, %g1
261
262 /* Copy 64-byte queue entry into kernel buffer. */
263 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
264 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
265 add %g2, 0x08, %g2
266 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
267 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
268 add %g2, 0x08, %g2
269 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
270 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
271 add %g2, 0x08, %g2
272 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
273 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
274 add %g2, 0x08, %g2
275 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
276 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
277 add %g2, 0x08, %g2
278 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
279 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
280 add %g2, 0x08, %g2
281 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
282 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
283 add %g2, 0x08, %g2
284 ldxa [%g5 + %g2] ASI_PHYS_USE_EC, %g3
285 stxa %g3, [%g7 + %g2] ASI_PHYS_USE_EC
286 add %g2, 0x08, %g2
287
288 /* Update queue head pointer. */
289 and %g2, %g4, %g2
290
291 mov INTRQ_NONRESUM_MONDO_HEAD, %g4
292 stxa %g2, [%g4] ASI_QUEUE
293 membar #Sync
294
295 /* Disable interrupts and save register state so we can call
296 * C code. The etrap handling will leave %g4 in %l4 for us
297 * when it's done.
298 */
299 rdpr %pil, %g2
300 wrpr %g0, PIL_NORMAL_MAX, %pil
301 mov %g1, %g4
302 ba,pt %xcc, etrap_irq
303 rd %pc, %g7
304#ifdef CONFIG_TRACE_IRQFLAGS
305 call trace_hardirqs_off
306 nop
307#endif
308 /* Log the event. */
309 add %sp, PTREGS_OFF, %o0
310 call sun4v_nonresum_error
311 mov %l4, %o1
312
313 /* Return from trap. */
314 ba,pt %xcc, rtrap_irq
315 nop
316
317sun4v_nonres_mondo_queue_empty:
318 retry
319
320sun4v_nonres_mondo_queue_full:
321 /* The queue is full, consolidate our damage by setting
322 * the head equal to the tail. We'll just trap again otherwise.
323 * Call C code to log the event.
324 */
325 mov INTRQ_NONRESUM_MONDO_HEAD, %g2
326 stxa %g4, [%g2] ASI_QUEUE
327 membar #Sync
328
329 rdpr %pil, %g2
330 wrpr %g0, PIL_NORMAL_MAX, %pil
331 ba,pt %xcc, etrap_irq
332 rd %pc, %g7
333#ifdef CONFIG_TRACE_IRQFLAGS
334 call trace_hardirqs_off
335 nop
336#endif
337 call sun4v_nonresum_overflow
338 add %sp, PTREGS_OFF, %o0
339
340 ba,pt %xcc, rtrap_irq
341 nop
diff --git a/arch/sparc/kernel/sun4v_tlb_miss.S b/arch/sparc/kernel/sun4v_tlb_miss.S
new file mode 100644
index 000000000000..e1fbf8c75787
--- /dev/null
+++ b/arch/sparc/kernel/sun4v_tlb_miss.S
@@ -0,0 +1,428 @@
1/* sun4v_tlb_miss.S: Sun4v TLB miss handlers.
2 *
3 * Copyright (C) 2006 <davem@davemloft.net>
4 */
5
6 .text
7 .align 32
8
9 /* Load ITLB fault information into VADDR and CTX, using BASE. */
10#define LOAD_ITLB_INFO(BASE, VADDR, CTX) \
11 ldx [BASE + HV_FAULT_I_ADDR_OFFSET], VADDR; \
12 ldx [BASE + HV_FAULT_I_CTX_OFFSET], CTX;
13
14 /* Load DTLB fault information into VADDR and CTX, using BASE. */
15#define LOAD_DTLB_INFO(BASE, VADDR, CTX) \
16 ldx [BASE + HV_FAULT_D_ADDR_OFFSET], VADDR; \
17 ldx [BASE + HV_FAULT_D_CTX_OFFSET], CTX;
18
19 /* DEST = (VADDR >> 22)
20 *
21 * Branch to ZERO_CTX_LABEL if context is zero.
22 */
23#define COMPUTE_TAG_TARGET(DEST, VADDR, CTX, ZERO_CTX_LABEL) \
24 srlx VADDR, 22, DEST; \
25 brz,pn CTX, ZERO_CTX_LABEL; \
26 nop;
27
28 /* Create TSB pointer. This is something like:
29 *
30 * index_mask = (512 << (tsb_reg & 0x7UL)) - 1UL;
31 * tsb_base = tsb_reg & ~0x7UL;
32 * tsb_index = ((vaddr >> HASH_SHIFT) & tsb_mask);
33 * tsb_ptr = tsb_base + (tsb_index * 16);
34 */
35#define COMPUTE_TSB_PTR(TSB_PTR, VADDR, HASH_SHIFT, TMP1, TMP2) \
36 and TSB_PTR, 0x7, TMP1; \
37 mov 512, TMP2; \
38 andn TSB_PTR, 0x7, TSB_PTR; \
39 sllx TMP2, TMP1, TMP2; \
40 srlx VADDR, HASH_SHIFT, TMP1; \
41 sub TMP2, 1, TMP2; \
42 and TMP1, TMP2, TMP1; \
43 sllx TMP1, 4, TMP1; \
44 add TSB_PTR, TMP1, TSB_PTR;
45
46sun4v_itlb_miss:
47 /* Load MMU Miss base into %g2. */
48 ldxa [%g0] ASI_SCRATCHPAD, %g2
49
50 /* Load UTSB reg into %g1. */
51 mov SCRATCHPAD_UTSBREG1, %g1
52 ldxa [%g1] ASI_SCRATCHPAD, %g1
53
54 LOAD_ITLB_INFO(%g2, %g4, %g5)
55 COMPUTE_TAG_TARGET(%g6, %g4, %g5, kvmap_itlb_4v)
56 COMPUTE_TSB_PTR(%g1, %g4, PAGE_SHIFT, %g3, %g7)
57
58 /* Load TSB tag/pte into %g2/%g3 and compare the tag. */
59 ldda [%g1] ASI_QUAD_LDD_PHYS_4V, %g2
60 cmp %g2, %g6
61 bne,a,pn %xcc, tsb_miss_page_table_walk
62 mov FAULT_CODE_ITLB, %g3
63 andcc %g3, _PAGE_EXEC_4V, %g0
64 be,a,pn %xcc, tsb_do_fault
65 mov FAULT_CODE_ITLB, %g3
66
67 /* We have a valid entry, make hypervisor call to load
68 * I-TLB and return from trap.
69 *
70 * %g3: PTE
71 * %g4: vaddr
72 */
73sun4v_itlb_load:
74 ldxa [%g0] ASI_SCRATCHPAD, %g6
75 mov %o0, %g1 ! save %o0
76 mov %o1, %g2 ! save %o1
77 mov %o2, %g5 ! save %o2
78 mov %o3, %g7 ! save %o3
79 mov %g4, %o0 ! vaddr
80 ldx [%g6 + HV_FAULT_I_CTX_OFFSET], %o1 ! ctx
81 mov %g3, %o2 ! PTE
82 mov HV_MMU_IMMU, %o3 ! flags
83 ta HV_MMU_MAP_ADDR_TRAP
84 brnz,pn %o0, sun4v_itlb_error
85 mov %g2, %o1 ! restore %o1
86 mov %g1, %o0 ! restore %o0
87 mov %g5, %o2 ! restore %o2
88 mov %g7, %o3 ! restore %o3
89
90 retry
91
92sun4v_dtlb_miss:
93 /* Load MMU Miss base into %g2. */
94 ldxa [%g0] ASI_SCRATCHPAD, %g2
95
96 /* Load UTSB reg into %g1. */
97 mov SCRATCHPAD_UTSBREG1, %g1
98 ldxa [%g1] ASI_SCRATCHPAD, %g1
99
100 LOAD_DTLB_INFO(%g2, %g4, %g5)
101 COMPUTE_TAG_TARGET(%g6, %g4, %g5, kvmap_dtlb_4v)
102 COMPUTE_TSB_PTR(%g1, %g4, PAGE_SHIFT, %g3, %g7)
103
104 /* Load TSB tag/pte into %g2/%g3 and compare the tag. */
105 ldda [%g1] ASI_QUAD_LDD_PHYS_4V, %g2
106 cmp %g2, %g6
107 bne,a,pn %xcc, tsb_miss_page_table_walk
108 mov FAULT_CODE_DTLB, %g3
109
110 /* We have a valid entry, make hypervisor call to load
111 * D-TLB and return from trap.
112 *
113 * %g3: PTE
114 * %g4: vaddr
115 */
116sun4v_dtlb_load:
117 ldxa [%g0] ASI_SCRATCHPAD, %g6
118 mov %o0, %g1 ! save %o0
119 mov %o1, %g2 ! save %o1
120 mov %o2, %g5 ! save %o2
121 mov %o3, %g7 ! save %o3
122 mov %g4, %o0 ! vaddr
123 ldx [%g6 + HV_FAULT_D_CTX_OFFSET], %o1 ! ctx
124 mov %g3, %o2 ! PTE
125 mov HV_MMU_DMMU, %o3 ! flags
126 ta HV_MMU_MAP_ADDR_TRAP
127 brnz,pn %o0, sun4v_dtlb_error
128 mov %g2, %o1 ! restore %o1
129 mov %g1, %o0 ! restore %o0
130 mov %g5, %o2 ! restore %o2
131 mov %g7, %o3 ! restore %o3
132
133 retry
134
135sun4v_dtlb_prot:
136 SET_GL(1)
137
138 /* Load MMU Miss base into %g5. */
139 ldxa [%g0] ASI_SCRATCHPAD, %g5
140
141 ldx [%g5 + HV_FAULT_D_ADDR_OFFSET], %g5
142 rdpr %tl, %g1
143 cmp %g1, 1
144 bgu,pn %xcc, winfix_trampoline
145 mov FAULT_CODE_DTLB | FAULT_CODE_WRITE, %g4
146 ba,pt %xcc, sparc64_realfault_common
147 nop
148
149 /* Called from trap table:
150 * %g4: vaddr
151 * %g5: context
152 * %g6: TAG TARGET
153 */
154sun4v_itsb_miss:
155 mov SCRATCHPAD_UTSBREG1, %g1
156 ldxa [%g1] ASI_SCRATCHPAD, %g1
157 brz,pn %g5, kvmap_itlb_4v
158 mov FAULT_CODE_ITLB, %g3
159 ba,a,pt %xcc, sun4v_tsb_miss_common
160
161 /* Called from trap table:
162 * %g4: vaddr
163 * %g5: context
164 * %g6: TAG TARGET
165 */
166sun4v_dtsb_miss:
167 mov SCRATCHPAD_UTSBREG1, %g1
168 ldxa [%g1] ASI_SCRATCHPAD, %g1
169 brz,pn %g5, kvmap_dtlb_4v
170 mov FAULT_CODE_DTLB, %g3
171
172 /* fallthrough */
173
174sun4v_tsb_miss_common:
175 COMPUTE_TSB_PTR(%g1, %g4, PAGE_SHIFT, %g5, %g7)
176
177 sub %g2, TRAP_PER_CPU_FAULT_INFO, %g2
178
179#ifdef CONFIG_HUGETLB_PAGE
180 mov SCRATCHPAD_UTSBREG2, %g5
181 ldxa [%g5] ASI_SCRATCHPAD, %g5
182 cmp %g5, -1
183 be,pt %xcc, 80f
184 nop
185 COMPUTE_TSB_PTR(%g5, %g4, HPAGE_SHIFT, %g2, %g7)
186
187 /* That clobbered %g2, reload it. */
188 ldxa [%g0] ASI_SCRATCHPAD, %g2
189 sub %g2, TRAP_PER_CPU_FAULT_INFO, %g2
190
19180: stx %g5, [%g2 + TRAP_PER_CPU_TSB_HUGE_TEMP]
192#endif
193
194 ba,pt %xcc, tsb_miss_page_table_walk_sun4v_fastpath
195 ldx [%g2 + TRAP_PER_CPU_PGD_PADDR], %g7
196
197sun4v_itlb_error:
198 sethi %hi(sun4v_err_itlb_vaddr), %g1
199 stx %g4, [%g1 + %lo(sun4v_err_itlb_vaddr)]
200 sethi %hi(sun4v_err_itlb_ctx), %g1
201 ldxa [%g0] ASI_SCRATCHPAD, %g6
202 ldx [%g6 + HV_FAULT_I_CTX_OFFSET], %o1
203 stx %o1, [%g1 + %lo(sun4v_err_itlb_ctx)]
204 sethi %hi(sun4v_err_itlb_pte), %g1
205 stx %g3, [%g1 + %lo(sun4v_err_itlb_pte)]
206 sethi %hi(sun4v_err_itlb_error), %g1
207 stx %o0, [%g1 + %lo(sun4v_err_itlb_error)]
208
209 rdpr %tl, %g4
210 cmp %g4, 1
211 ble,pt %icc, 1f
212 sethi %hi(2f), %g7
213 ba,pt %xcc, etraptl1
214 or %g7, %lo(2f), %g7
215
2161: ba,pt %xcc, etrap
2172: or %g7, %lo(2b), %g7
218 mov %l4, %o1
219 call sun4v_itlb_error_report
220 add %sp, PTREGS_OFF, %o0
221
222 /* NOTREACHED */
223
224sun4v_dtlb_error:
225 sethi %hi(sun4v_err_dtlb_vaddr), %g1
226 stx %g4, [%g1 + %lo(sun4v_err_dtlb_vaddr)]
227 sethi %hi(sun4v_err_dtlb_ctx), %g1
228 ldxa [%g0] ASI_SCRATCHPAD, %g6
229 ldx [%g6 + HV_FAULT_D_CTX_OFFSET], %o1
230 stx %o1, [%g1 + %lo(sun4v_err_dtlb_ctx)]
231 sethi %hi(sun4v_err_dtlb_pte), %g1
232 stx %g3, [%g1 + %lo(sun4v_err_dtlb_pte)]
233 sethi %hi(sun4v_err_dtlb_error), %g1
234 stx %o0, [%g1 + %lo(sun4v_err_dtlb_error)]
235
236 rdpr %tl, %g4
237 cmp %g4, 1
238 ble,pt %icc, 1f
239 sethi %hi(2f), %g7
240 ba,pt %xcc, etraptl1
241 or %g7, %lo(2f), %g7
242
2431: ba,pt %xcc, etrap
2442: or %g7, %lo(2b), %g7
245 mov %l4, %o1
246 call sun4v_dtlb_error_report
247 add %sp, PTREGS_OFF, %o0
248
249 /* NOTREACHED */
250
251 /* Instruction Access Exception, tl0. */
252sun4v_iacc:
253 ldxa [%g0] ASI_SCRATCHPAD, %g2
254 ldx [%g2 + HV_FAULT_I_TYPE_OFFSET], %g3
255 ldx [%g2 + HV_FAULT_I_ADDR_OFFSET], %g4
256 ldx [%g2 + HV_FAULT_I_CTX_OFFSET], %g5
257 sllx %g3, 16, %g3
258 or %g5, %g3, %g5
259 ba,pt %xcc, etrap
260 rd %pc, %g7
261 mov %l4, %o1
262 mov %l5, %o2
263 call sun4v_insn_access_exception
264 add %sp, PTREGS_OFF, %o0
265 ba,a,pt %xcc, rtrap
266
267 /* Instruction Access Exception, tl1. */
268sun4v_iacc_tl1:
269 ldxa [%g0] ASI_SCRATCHPAD, %g2
270 ldx [%g2 + HV_FAULT_I_TYPE_OFFSET], %g3
271 ldx [%g2 + HV_FAULT_I_ADDR_OFFSET], %g4
272 ldx [%g2 + HV_FAULT_I_CTX_OFFSET], %g5
273 sllx %g3, 16, %g3
274 or %g5, %g3, %g5
275 ba,pt %xcc, etraptl1
276 rd %pc, %g7
277 mov %l4, %o1
278 mov %l5, %o2
279 call sun4v_insn_access_exception_tl1
280 add %sp, PTREGS_OFF, %o0
281 ba,a,pt %xcc, rtrap
282
283 /* Data Access Exception, tl0. */
284sun4v_dacc:
285 ldxa [%g0] ASI_SCRATCHPAD, %g2
286 ldx [%g2 + HV_FAULT_D_TYPE_OFFSET], %g3
287 ldx [%g2 + HV_FAULT_D_ADDR_OFFSET], %g4
288 ldx [%g2 + HV_FAULT_D_CTX_OFFSET], %g5
289 sllx %g3, 16, %g3
290 or %g5, %g3, %g5
291 ba,pt %xcc, etrap
292 rd %pc, %g7
293 mov %l4, %o1
294 mov %l5, %o2
295 call sun4v_data_access_exception
296 add %sp, PTREGS_OFF, %o0
297 ba,a,pt %xcc, rtrap
298
299 /* Data Access Exception, tl1. */
300sun4v_dacc_tl1:
301 ldxa [%g0] ASI_SCRATCHPAD, %g2
302 ldx [%g2 + HV_FAULT_D_TYPE_OFFSET], %g3
303 ldx [%g2 + HV_FAULT_D_ADDR_OFFSET], %g4
304 ldx [%g2 + HV_FAULT_D_CTX_OFFSET], %g5
305 sllx %g3, 16, %g3
306 or %g5, %g3, %g5
307 ba,pt %xcc, etraptl1
308 rd %pc, %g7
309 mov %l4, %o1
310 mov %l5, %o2
311 call sun4v_data_access_exception_tl1
312 add %sp, PTREGS_OFF, %o0
313 ba,a,pt %xcc, rtrap
314
315 /* Memory Address Unaligned. */
316sun4v_mna:
317 /* Window fixup? */
318 rdpr %tl, %g2
319 cmp %g2, 1
320 ble,pt %icc, 1f
321 nop
322
323 SET_GL(1)
324 ldxa [%g0] ASI_SCRATCHPAD, %g2
325 ldx [%g2 + HV_FAULT_D_ADDR_OFFSET], %g5
326 mov HV_FAULT_TYPE_UNALIGNED, %g3
327 ldx [%g2 + HV_FAULT_D_CTX_OFFSET], %g4
328 sllx %g3, 16, %g3
329 or %g4, %g3, %g4
330 ba,pt %xcc, winfix_mna
331 rdpr %tpc, %g3
332 /* not reached */
333
3341: ldxa [%g0] ASI_SCRATCHPAD, %g2
335 mov HV_FAULT_TYPE_UNALIGNED, %g3
336 ldx [%g2 + HV_FAULT_D_ADDR_OFFSET], %g4
337 ldx [%g2 + HV_FAULT_D_CTX_OFFSET], %g5
338 sllx %g3, 16, %g3
339 or %g5, %g3, %g5
340
341 ba,pt %xcc, etrap
342 rd %pc, %g7
343 mov %l4, %o1
344 mov %l5, %o2
345 call sun4v_do_mna
346 add %sp, PTREGS_OFF, %o0
347 ba,a,pt %xcc, rtrap
348
349 /* Privileged Action. */
350sun4v_privact:
351 ba,pt %xcc, etrap
352 rd %pc, %g7
353 call do_privact
354 add %sp, PTREGS_OFF, %o0
355 ba,a,pt %xcc, rtrap
356
357 /* Unaligned ldd float, tl0. */
358sun4v_lddfmna:
359 ldxa [%g0] ASI_SCRATCHPAD, %g2
360 ldx [%g2 + HV_FAULT_D_TYPE_OFFSET], %g3
361 ldx [%g2 + HV_FAULT_D_ADDR_OFFSET], %g4
362 ldx [%g2 + HV_FAULT_D_CTX_OFFSET], %g5
363 sllx %g3, 16, %g3
364 or %g5, %g3, %g5
365 ba,pt %xcc, etrap
366 rd %pc, %g7
367 mov %l4, %o1
368 mov %l5, %o2
369 call handle_lddfmna
370 add %sp, PTREGS_OFF, %o0
371 ba,a,pt %xcc, rtrap
372
373 /* Unaligned std float, tl0. */
374sun4v_stdfmna:
375 ldxa [%g0] ASI_SCRATCHPAD, %g2
376 ldx [%g2 + HV_FAULT_D_TYPE_OFFSET], %g3
377 ldx [%g2 + HV_FAULT_D_ADDR_OFFSET], %g4
378 ldx [%g2 + HV_FAULT_D_CTX_OFFSET], %g5
379 sllx %g3, 16, %g3
380 or %g5, %g3, %g5
381 ba,pt %xcc, etrap
382 rd %pc, %g7
383 mov %l4, %o1
384 mov %l5, %o2
385 call handle_stdfmna
386 add %sp, PTREGS_OFF, %o0
387 ba,a,pt %xcc, rtrap
388
389#define BRANCH_ALWAYS 0x10680000
390#define NOP 0x01000000
391#define SUN4V_DO_PATCH(OLD, NEW) \
392 sethi %hi(NEW), %g1; \
393 or %g1, %lo(NEW), %g1; \
394 sethi %hi(OLD), %g2; \
395 or %g2, %lo(OLD), %g2; \
396 sub %g1, %g2, %g1; \
397 sethi %hi(BRANCH_ALWAYS), %g3; \
398 sll %g1, 11, %g1; \
399 srl %g1, 11 + 2, %g1; \
400 or %g3, %lo(BRANCH_ALWAYS), %g3; \
401 or %g3, %g1, %g3; \
402 stw %g3, [%g2]; \
403 sethi %hi(NOP), %g3; \
404 or %g3, %lo(NOP), %g3; \
405 stw %g3, [%g2 + 0x4]; \
406 flush %g2;
407
408 .globl sun4v_patch_tlb_handlers
409 .type sun4v_patch_tlb_handlers,#function
410sun4v_patch_tlb_handlers:
411 SUN4V_DO_PATCH(tl0_iamiss, sun4v_itlb_miss)
412 SUN4V_DO_PATCH(tl1_iamiss, sun4v_itlb_miss)
413 SUN4V_DO_PATCH(tl0_damiss, sun4v_dtlb_miss)
414 SUN4V_DO_PATCH(tl1_damiss, sun4v_dtlb_miss)
415 SUN4V_DO_PATCH(tl0_daprot, sun4v_dtlb_prot)
416 SUN4V_DO_PATCH(tl1_daprot, sun4v_dtlb_prot)
417 SUN4V_DO_PATCH(tl0_iax, sun4v_iacc)
418 SUN4V_DO_PATCH(tl1_iax, sun4v_iacc_tl1)
419 SUN4V_DO_PATCH(tl0_dax, sun4v_dacc)
420 SUN4V_DO_PATCH(tl1_dax, sun4v_dacc_tl1)
421 SUN4V_DO_PATCH(tl0_mna, sun4v_mna)
422 SUN4V_DO_PATCH(tl1_mna, sun4v_mna)
423 SUN4V_DO_PATCH(tl0_lddfmna, sun4v_lddfmna)
424 SUN4V_DO_PATCH(tl0_stdfmna, sun4v_stdfmna)
425 SUN4V_DO_PATCH(tl0_privact, sun4v_privact)
426 retl
427 nop
428 .size sun4v_patch_tlb_handlers,.-sun4v_patch_tlb_handlers
diff --git a/arch/sparc/kernel/sys32.S b/arch/sparc/kernel/sys32.S
new file mode 100644
index 000000000000..f061c4dda9ef
--- /dev/null
+++ b/arch/sparc/kernel/sys32.S
@@ -0,0 +1,367 @@
1/*
2 * sys32.S: I-cache tricks for 32-bit compatibility layer simple
3 * conversions.
4 *
5 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
6 * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
7 */
8
9#include <asm/errno.h>
10
11/* NOTE: call as jump breaks return stack, we have to avoid that */
12
13 .text
14
15#define SIGN1(STUB,SYSCALL,REG1) \
16 .align 32; \
17 .globl STUB; \
18STUB: sethi %hi(SYSCALL), %g1; \
19 jmpl %g1 + %lo(SYSCALL), %g0; \
20 sra REG1, 0, REG1
21
22#define SIGN2(STUB,SYSCALL,REG1,REG2) \
23 .align 32; \
24 .globl STUB; \
25STUB: sethi %hi(SYSCALL), %g1; \
26 sra REG1, 0, REG1; \
27 jmpl %g1 + %lo(SYSCALL), %g0; \
28 sra REG2, 0, REG2
29
30#define SIGN3(STUB,SYSCALL,REG1,REG2,REG3) \
31 .align 32; \
32 .globl STUB; \
33STUB: sra REG1, 0, REG1; \
34 sethi %hi(SYSCALL), %g1; \
35 sra REG2, 0, REG2; \
36 jmpl %g1 + %lo(SYSCALL), %g0; \
37 sra REG3, 0, REG3
38
39#define SIGN4(STUB,SYSCALL,REG1,REG2,REG3,REG4) \
40 .align 32; \
41 .globl STUB; \
42STUB: sra REG1, 0, REG1; \
43 sethi %hi(SYSCALL), %g1; \
44 sra REG2, 0, REG2; \
45 sra REG3, 0, REG3; \
46 jmpl %g1 + %lo(SYSCALL), %g0; \
47 sra REG4, 0, REG4
48
49SIGN1(sys32_exit, sparc_exit, %o0)
50SIGN1(sys32_exit_group, sys_exit_group, %o0)
51SIGN1(sys32_wait4, compat_sys_wait4, %o2)
52SIGN1(sys32_creat, sys_creat, %o1)
53SIGN1(sys32_mknod, sys_mknod, %o1)
54SIGN1(sys32_perfctr, sys_perfctr, %o0)
55SIGN1(sys32_umount, sys_umount, %o1)
56SIGN1(sys32_signal, sys_signal, %o0)
57SIGN1(sys32_access, sys_access, %o1)
58SIGN1(sys32_msync, sys_msync, %o2)
59SIGN2(sys32_reboot, sys_reboot, %o0, %o1)
60SIGN1(sys32_setitimer, compat_sys_setitimer, %o0)
61SIGN1(sys32_getitimer, compat_sys_getitimer, %o0)
62SIGN1(sys32_sethostname, sys_sethostname, %o1)
63SIGN1(sys32_swapon, sys_swapon, %o1)
64SIGN1(sys32_sigaction, compat_sys_sigaction, %o0)
65SIGN1(sys32_rt_sigaction, compat_sys_rt_sigaction, %o0)
66SIGN1(sys32_sigprocmask, compat_sys_sigprocmask, %o0)
67SIGN1(sys32_rt_sigprocmask, compat_sys_rt_sigprocmask, %o0)
68SIGN2(sys32_rt_sigqueueinfo, compat_sys_rt_sigqueueinfo, %o0, %o1)
69SIGN1(sys32_getrusage, compat_sys_getrusage, %o0)
70SIGN1(sys32_setxattr, sys_setxattr, %o4)
71SIGN1(sys32_lsetxattr, sys_lsetxattr, %o4)
72SIGN1(sys32_fsetxattr, sys_fsetxattr, %o4)
73SIGN1(sys32_fgetxattr, sys_fgetxattr, %o0)
74SIGN1(sys32_flistxattr, sys_flistxattr, %o0)
75SIGN1(sys32_fremovexattr, sys_fremovexattr, %o0)
76SIGN2(sys32_tkill, sys_tkill, %o0, %o1)
77SIGN1(sys32_epoll_create, sys_epoll_create, %o0)
78SIGN3(sys32_epoll_ctl, sys_epoll_ctl, %o0, %o1, %o2)
79SIGN3(sys32_epoll_wait, sys_epoll_wait, %o0, %o2, %o3)
80SIGN1(sys32_readahead, compat_sys_readahead, %o0)
81SIGN2(sys32_fadvise64, compat_sys_fadvise64, %o0, %o4)
82SIGN2(sys32_fadvise64_64, compat_sys_fadvise64_64, %o0, %o5)
83SIGN2(sys32_bdflush, sys_bdflush, %o0, %o1)
84SIGN1(sys32_mlockall, sys_mlockall, %o0)
85SIGN1(sys32_nfsservctl, compat_sys_nfsservctl, %o0)
86SIGN1(sys32_clock_nanosleep, compat_sys_clock_nanosleep, %o1)
87SIGN1(sys32_timer_settime, compat_sys_timer_settime, %o1)
88SIGN1(sys32_io_submit, compat_sys_io_submit, %o1)
89SIGN1(sys32_mq_open, compat_sys_mq_open, %o1)
90SIGN1(sys32_select, compat_sys_select, %o0)
91SIGN1(sys32_mkdir, sys_mkdir, %o1)
92SIGN3(sys32_futex, compat_sys_futex, %o1, %o2, %o5)
93SIGN1(sys32_sysfs, compat_sys_sysfs, %o0)
94SIGN2(sys32_sendfile, compat_sys_sendfile, %o0, %o1)
95SIGN2(sys32_sendfile64, compat_sys_sendfile64, %o0, %o1)
96SIGN1(sys32_prctl, sys_prctl, %o0)
97SIGN1(sys32_sched_rr_get_interval, compat_sys_sched_rr_get_interval, %o0)
98SIGN2(sys32_waitpid, sys_waitpid, %o0, %o2)
99SIGN1(sys32_getgroups, sys_getgroups, %o0)
100SIGN1(sys32_getpgid, sys_getpgid, %o0)
101SIGN2(sys32_getpriority, sys_getpriority, %o0, %o1)
102SIGN1(sys32_getsid, sys_getsid, %o0)
103SIGN2(sys32_kill, sys_kill, %o0, %o1)
104SIGN1(sys32_nice, sys_nice, %o0)
105SIGN1(sys32_lseek, sys_lseek, %o1)
106SIGN2(sys32_open, sparc32_open, %o1, %o2)
107SIGN1(sys32_readlink, sys_readlink, %o2)
108SIGN1(sys32_sched_get_priority_max, sys_sched_get_priority_max, %o0)
109SIGN1(sys32_sched_get_priority_min, sys_sched_get_priority_min, %o0)
110SIGN1(sys32_sched_getparam, sys_sched_getparam, %o0)
111SIGN1(sys32_sched_getscheduler, sys_sched_getscheduler, %o0)
112SIGN1(sys32_sched_setparam, sys_sched_setparam, %o0)
113SIGN2(sys32_sched_setscheduler, sys_sched_setscheduler, %o0, %o1)
114SIGN1(sys32_getdomainname, sys_getdomainname, %o1)
115SIGN1(sys32_setdomainname, sys_setdomainname, %o1)
116SIGN1(sys32_setgroups, sys_setgroups, %o0)
117SIGN2(sys32_setpgid, sys_setpgid, %o0, %o1)
118SIGN3(sys32_setpriority, sys_setpriority, %o0, %o1, %o2)
119SIGN1(sys32_ssetmask, sys_ssetmask, %o0)
120SIGN2(sys32_syslog, sys_syslog, %o0, %o2)
121SIGN1(sys32_umask, sys_umask, %o0)
122SIGN3(sys32_tgkill, sys_tgkill, %o0, %o1, %o2)
123SIGN1(sys32_sendto, sys_sendto, %o0)
124SIGN1(sys32_recvfrom, sys_recvfrom, %o0)
125SIGN3(sys32_socket, sys_socket, %o0, %o1, %o2)
126SIGN2(sys32_connect, sys_connect, %o0, %o2)
127SIGN2(sys32_bind, sys_bind, %o0, %o2)
128SIGN2(sys32_listen, sys_listen, %o0, %o1)
129SIGN1(sys32_recvmsg, compat_sys_recvmsg, %o0)
130SIGN1(sys32_sendmsg, compat_sys_sendmsg, %o0)
131SIGN2(sys32_shutdown, sys_shutdown, %o0, %o1)
132SIGN3(sys32_socketpair, sys_socketpair, %o0, %o1, %o2)
133SIGN1(sys32_getpeername, sys_getpeername, %o0)
134SIGN1(sys32_getsockname, sys_getsockname, %o0)
135SIGN2(sys32_ioprio_get, sys_ioprio_get, %o0, %o1)
136SIGN3(sys32_ioprio_set, sys_ioprio_set, %o0, %o1, %o2)
137SIGN2(sys32_splice, sys_splice, %o0, %o1)
138SIGN2(sys32_sync_file_range, compat_sync_file_range, %o0, %o5)
139SIGN2(sys32_tee, sys_tee, %o0, %o1)
140SIGN1(sys32_vmsplice, compat_sys_vmsplice, %o0)
141
142 .globl sys32_mmap2
143sys32_mmap2:
144 sethi %hi(sys_mmap), %g1
145 jmpl %g1 + %lo(sys_mmap), %g0
146 sllx %o5, 12, %o5
147
148 .align 32
149 .globl sys32_socketcall
150sys32_socketcall: /* %o0=call, %o1=args */
151 cmp %o0, 1
152 bl,pn %xcc, do_einval
153 cmp %o0, 18
154 bg,pn %xcc, do_einval
155 sub %o0, 1, %o0
156 sllx %o0, 5, %o0
157 sethi %hi(__socketcall_table_begin), %g2
158 or %g2, %lo(__socketcall_table_begin), %g2
159 jmpl %g2 + %o0, %g0
160 nop
161do_einval:
162 retl
163 mov -EINVAL, %o0
164
165 .align 32
166__socketcall_table_begin:
167
168 /* Each entry is exactly 32 bytes. */
169do_sys_socket: /* sys_socket(int, int, int) */
1701: ldswa [%o1 + 0x0] %asi, %o0
171 sethi %hi(sys_socket), %g1
1722: ldswa [%o1 + 0x8] %asi, %o2
173 jmpl %g1 + %lo(sys_socket), %g0
1743: ldswa [%o1 + 0x4] %asi, %o1
175 nop
176 nop
177 nop
178do_sys_bind: /* sys_bind(int fd, struct sockaddr *, int) */
1794: ldswa [%o1 + 0x0] %asi, %o0
180 sethi %hi(sys_bind), %g1
1815: ldswa [%o1 + 0x8] %asi, %o2
182 jmpl %g1 + %lo(sys_bind), %g0
1836: lduwa [%o1 + 0x4] %asi, %o1
184 nop
185 nop
186 nop
187do_sys_connect: /* sys_connect(int, struct sockaddr *, int) */
1887: ldswa [%o1 + 0x0] %asi, %o0
189 sethi %hi(sys_connect), %g1
1908: ldswa [%o1 + 0x8] %asi, %o2
191 jmpl %g1 + %lo(sys_connect), %g0
1929: lduwa [%o1 + 0x4] %asi, %o1
193 nop
194 nop
195 nop
196do_sys_listen: /* sys_listen(int, int) */
19710: ldswa [%o1 + 0x0] %asi, %o0
198 sethi %hi(sys_listen), %g1
199 jmpl %g1 + %lo(sys_listen), %g0
20011: ldswa [%o1 + 0x4] %asi, %o1
201 nop
202 nop
203 nop
204 nop
205do_sys_accept: /* sys_accept(int, struct sockaddr *, int *) */
20612: ldswa [%o1 + 0x0] %asi, %o0
207 sethi %hi(sys_accept), %g1
20813: lduwa [%o1 + 0x8] %asi, %o2
209 jmpl %g1 + %lo(sys_accept), %g0
21014: lduwa [%o1 + 0x4] %asi, %o1
211 nop
212 nop
213 nop
214do_sys_getsockname: /* sys_getsockname(int, struct sockaddr *, int *) */
21515: ldswa [%o1 + 0x0] %asi, %o0
216 sethi %hi(sys_getsockname), %g1
21716: lduwa [%o1 + 0x8] %asi, %o2
218 jmpl %g1 + %lo(sys_getsockname), %g0
21917: lduwa [%o1 + 0x4] %asi, %o1
220 nop
221 nop
222 nop
223do_sys_getpeername: /* sys_getpeername(int, struct sockaddr *, int *) */
22418: ldswa [%o1 + 0x0] %asi, %o0
225 sethi %hi(sys_getpeername), %g1
22619: lduwa [%o1 + 0x8] %asi, %o2
227 jmpl %g1 + %lo(sys_getpeername), %g0
22820: lduwa [%o1 + 0x4] %asi, %o1
229 nop
230 nop
231 nop
232do_sys_socketpair: /* sys_socketpair(int, int, int, int *) */
23321: ldswa [%o1 + 0x0] %asi, %o0
234 sethi %hi(sys_socketpair), %g1
23522: ldswa [%o1 + 0x8] %asi, %o2
23623: lduwa [%o1 + 0xc] %asi, %o3
237 jmpl %g1 + %lo(sys_socketpair), %g0
23824: ldswa [%o1 + 0x4] %asi, %o1
239 nop
240 nop
241do_sys_send: /* sys_send(int, void *, size_t, unsigned int) */
24225: ldswa [%o1 + 0x0] %asi, %o0
243 sethi %hi(sys_send), %g1
24426: lduwa [%o1 + 0x8] %asi, %o2
24527: lduwa [%o1 + 0xc] %asi, %o3
246 jmpl %g1 + %lo(sys_send), %g0
24728: lduwa [%o1 + 0x4] %asi, %o1
248 nop
249 nop
250do_sys_recv: /* sys_recv(int, void *, size_t, unsigned int) */
25129: ldswa [%o1 + 0x0] %asi, %o0
252 sethi %hi(sys_recv), %g1
25330: lduwa [%o1 + 0x8] %asi, %o2
25431: lduwa [%o1 + 0xc] %asi, %o3
255 jmpl %g1 + %lo(sys_recv), %g0
25632: lduwa [%o1 + 0x4] %asi, %o1
257 nop
258 nop
259do_sys_sendto: /* sys_sendto(int, u32, compat_size_t, unsigned int, u32, int) */
26033: ldswa [%o1 + 0x0] %asi, %o0
261 sethi %hi(sys_sendto), %g1
26234: lduwa [%o1 + 0x8] %asi, %o2
26335: lduwa [%o1 + 0xc] %asi, %o3
26436: lduwa [%o1 + 0x10] %asi, %o4
26537: ldswa [%o1 + 0x14] %asi, %o5
266 jmpl %g1 + %lo(sys_sendto), %g0
26738: lduwa [%o1 + 0x4] %asi, %o1
268do_sys_recvfrom: /* sys_recvfrom(int, u32, compat_size_t, unsigned int, u32, u32) */
26939: ldswa [%o1 + 0x0] %asi, %o0
270 sethi %hi(sys_recvfrom), %g1
27140: lduwa [%o1 + 0x8] %asi, %o2
27241: lduwa [%o1 + 0xc] %asi, %o3
27342: lduwa [%o1 + 0x10] %asi, %o4
27443: lduwa [%o1 + 0x14] %asi, %o5
275 jmpl %g1 + %lo(sys_recvfrom), %g0
27644: lduwa [%o1 + 0x4] %asi, %o1
277do_sys_shutdown: /* sys_shutdown(int, int) */
27845: ldswa [%o1 + 0x0] %asi, %o0
279 sethi %hi(sys_shutdown), %g1
280 jmpl %g1 + %lo(sys_shutdown), %g0
28146: ldswa [%o1 + 0x4] %asi, %o1
282 nop
283 nop
284 nop
285 nop
286do_sys_setsockopt: /* compat_sys_setsockopt(int, int, int, char *, int) */
28747: ldswa [%o1 + 0x0] %asi, %o0
288 sethi %hi(compat_sys_setsockopt), %g1
28948: ldswa [%o1 + 0x8] %asi, %o2
29049: lduwa [%o1 + 0xc] %asi, %o3
29150: ldswa [%o1 + 0x10] %asi, %o4
292 jmpl %g1 + %lo(compat_sys_setsockopt), %g0
29351: ldswa [%o1 + 0x4] %asi, %o1
294 nop
295do_sys_getsockopt: /* compat_sys_getsockopt(int, int, int, u32, u32) */
29652: ldswa [%o1 + 0x0] %asi, %o0
297 sethi %hi(compat_sys_getsockopt), %g1
29853: ldswa [%o1 + 0x8] %asi, %o2
29954: lduwa [%o1 + 0xc] %asi, %o3
30055: lduwa [%o1 + 0x10] %asi, %o4
301 jmpl %g1 + %lo(compat_sys_getsockopt), %g0
30256: ldswa [%o1 + 0x4] %asi, %o1
303 nop
304do_sys_sendmsg: /* compat_sys_sendmsg(int, struct compat_msghdr *, unsigned int) */
30557: ldswa [%o1 + 0x0] %asi, %o0
306 sethi %hi(compat_sys_sendmsg), %g1
30758: lduwa [%o1 + 0x8] %asi, %o2
308 jmpl %g1 + %lo(compat_sys_sendmsg), %g0
30959: lduwa [%o1 + 0x4] %asi, %o1
310 nop
311 nop
312 nop
313do_sys_recvmsg: /* compat_sys_recvmsg(int, struct compat_msghdr *, unsigned int) */
31460: ldswa [%o1 + 0x0] %asi, %o0
315 sethi %hi(compat_sys_recvmsg), %g1
31661: lduwa [%o1 + 0x8] %asi, %o2
317 jmpl %g1 + %lo(compat_sys_recvmsg), %g0
31862: lduwa [%o1 + 0x4] %asi, %o1
319 nop
320 nop
321 nop
322do_sys_accept4: /* sys_accept4(int, struct sockaddr *, int *, int) */
32363: ldswa [%o1 + 0x0] %asi, %o0
324 sethi %hi(sys_accept4), %g1
32564: lduwa [%o1 + 0x8] %asi, %o2
32665: ldswa [%o1 + 0xc] %asi, %o3
327 jmpl %g1 + %lo(sys_accept4), %g0
32866: lduwa [%o1 + 0x4] %asi, %o1
329 nop
330 nop
331
332 .section __ex_table,"a"
333 .align 4
334 .word 1b, __retl_efault, 2b, __retl_efault
335 .word 3b, __retl_efault, 4b, __retl_efault
336 .word 5b, __retl_efault, 6b, __retl_efault
337 .word 7b, __retl_efault, 8b, __retl_efault
338 .word 9b, __retl_efault, 10b, __retl_efault
339 .word 11b, __retl_efault, 12b, __retl_efault
340 .word 13b, __retl_efault, 14b, __retl_efault
341 .word 15b, __retl_efault, 16b, __retl_efault
342 .word 17b, __retl_efault, 18b, __retl_efault
343 .word 19b, __retl_efault, 20b, __retl_efault
344 .word 21b, __retl_efault, 22b, __retl_efault
345 .word 23b, __retl_efault, 24b, __retl_efault
346 .word 25b, __retl_efault, 26b, __retl_efault
347 .word 27b, __retl_efault, 28b, __retl_efault
348 .word 29b, __retl_efault, 30b, __retl_efault
349 .word 31b, __retl_efault, 32b, __retl_efault
350 .word 33b, __retl_efault, 34b, __retl_efault
351 .word 35b, __retl_efault, 36b, __retl_efault
352 .word 37b, __retl_efault, 38b, __retl_efault
353 .word 39b, __retl_efault, 40b, __retl_efault
354 .word 41b, __retl_efault, 42b, __retl_efault
355 .word 43b, __retl_efault, 44b, __retl_efault
356 .word 45b, __retl_efault, 46b, __retl_efault
357 .word 47b, __retl_efault, 48b, __retl_efault
358 .word 49b, __retl_efault, 50b, __retl_efault
359 .word 51b, __retl_efault, 52b, __retl_efault
360 .word 53b, __retl_efault, 54b, __retl_efault
361 .word 55b, __retl_efault, 56b, __retl_efault
362 .word 57b, __retl_efault, 58b, __retl_efault
363 .word 59b, __retl_efault, 60b, __retl_efault
364 .word 61b, __retl_efault, 62b, __retl_efault
365 .word 63b, __retl_efault, 64b, __retl_efault
366 .word 65b, __retl_efault, 66b, __retl_efault
367 .previous
diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c
new file mode 100644
index 000000000000..e800503879e4
--- /dev/null
+++ b/arch/sparc/kernel/sys_sparc32.c
@@ -0,0 +1,682 @@
1/* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
2 *
3 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
4 * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
5 *
6 * These routines maintain argument size conversion between 32bit and 64bit
7 * environment.
8 */
9
10#include <linux/kernel.h>
11#include <linux/sched.h>
12#include <linux/capability.h>
13#include <linux/fs.h>
14#include <linux/mm.h>
15#include <linux/file.h>
16#include <linux/signal.h>
17#include <linux/resource.h>
18#include <linux/times.h>
19#include <linux/utsname.h>
20#include <linux/smp.h>
21#include <linux/smp_lock.h>
22#include <linux/sem.h>
23#include <linux/msg.h>
24#include <linux/shm.h>
25#include <linux/slab.h>
26#include <linux/uio.h>
27#include <linux/nfs_fs.h>
28#include <linux/quota.h>
29#include <linux/module.h>
30#include <linux/sunrpc/svc.h>
31#include <linux/nfsd/nfsd.h>
32#include <linux/nfsd/cache.h>
33#include <linux/nfsd/xdr.h>
34#include <linux/nfsd/syscall.h>
35#include <linux/poll.h>
36#include <linux/personality.h>
37#include <linux/stat.h>
38#include <linux/filter.h>
39#include <linux/highmem.h>
40#include <linux/highuid.h>
41#include <linux/mman.h>
42#include <linux/ipv6.h>
43#include <linux/in.h>
44#include <linux/icmpv6.h>
45#include <linux/syscalls.h>
46#include <linux/sysctl.h>
47#include <linux/binfmts.h>
48#include <linux/dnotify.h>
49#include <linux/security.h>
50#include <linux/compat.h>
51#include <linux/vfs.h>
52#include <linux/netfilter_ipv4/ip_tables.h>
53#include <linux/ptrace.h>
54
55#include <asm/types.h>
56#include <asm/uaccess.h>
57#include <asm/fpumacro.h>
58#include <asm/mmu_context.h>
59#include <asm/compat_signal.h>
60
61#ifdef CONFIG_SYSVIPC
62asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
63{
64 int version;
65
66 version = call >> 16; /* hack for backward compatibility */
67 call &= 0xffff;
68
69 switch (call) {
70 case SEMTIMEDOP:
71 if (fifth)
72 /* sign extend semid */
73 return compat_sys_semtimedop((int)first,
74 compat_ptr(ptr), second,
75 compat_ptr(fifth));
76 /* else fall through for normal semop() */
77 case SEMOP:
78 /* struct sembuf is the same on 32 and 64bit :)) */
79 /* sign extend semid */
80 return sys_semtimedop((int)first, compat_ptr(ptr), second,
81 NULL);
82 case SEMGET:
83 /* sign extend key, nsems */
84 return sys_semget((int)first, (int)second, third);
85 case SEMCTL:
86 /* sign extend semid, semnum */
87 return compat_sys_semctl((int)first, (int)second, third,
88 compat_ptr(ptr));
89
90 case MSGSND:
91 /* sign extend msqid */
92 return compat_sys_msgsnd((int)first, (int)second, third,
93 compat_ptr(ptr));
94 case MSGRCV:
95 /* sign extend msqid, msgtyp */
96 return compat_sys_msgrcv((int)first, second, (int)fifth,
97 third, version, compat_ptr(ptr));
98 case MSGGET:
99 /* sign extend key */
100 return sys_msgget((int)first, second);
101 case MSGCTL:
102 /* sign extend msqid */
103 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
104
105 case SHMAT:
106 /* sign extend shmid */
107 return compat_sys_shmat((int)first, second, third, version,
108 compat_ptr(ptr));
109 case SHMDT:
110 return sys_shmdt(compat_ptr(ptr));
111 case SHMGET:
112 /* sign extend key_t */
113 return sys_shmget((int)first, second, third);
114 case SHMCTL:
115 /* sign extend shmid */
116 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
117
118 default:
119 return -ENOSYS;
120 };
121
122 return -ENOSYS;
123}
124#endif
125
126asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
127{
128 if ((int)high < 0)
129 return -EINVAL;
130 else
131 return sys_truncate(path, (high << 32) | low);
132}
133
134asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
135{
136 if ((int)high < 0)
137 return -EINVAL;
138 else
139 return sys_ftruncate(fd, (high << 32) | low);
140}
141
142static int cp_compat_stat64(struct kstat *stat,
143 struct compat_stat64 __user *statbuf)
144{
145 int err;
146
147 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
148 err |= put_user(stat->ino, &statbuf->st_ino);
149 err |= put_user(stat->mode, &statbuf->st_mode);
150 err |= put_user(stat->nlink, &statbuf->st_nlink);
151 err |= put_user(stat->uid, &statbuf->st_uid);
152 err |= put_user(stat->gid, &statbuf->st_gid);
153 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
154 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
155 err |= put_user(stat->size, &statbuf->st_size);
156 err |= put_user(stat->blksize, &statbuf->st_blksize);
157 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
158 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
159 err |= put_user(stat->blocks, &statbuf->st_blocks);
160 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
161 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
162 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
163 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
164 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
165 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
166 err |= put_user(0, &statbuf->__unused4);
167 err |= put_user(0, &statbuf->__unused5);
168
169 return err;
170}
171
172asmlinkage long compat_sys_stat64(char __user * filename,
173 struct compat_stat64 __user *statbuf)
174{
175 struct kstat stat;
176 int error = vfs_stat(filename, &stat);
177
178 if (!error)
179 error = cp_compat_stat64(&stat, statbuf);
180 return error;
181}
182
183asmlinkage long compat_sys_lstat64(char __user * filename,
184 struct compat_stat64 __user *statbuf)
185{
186 struct kstat stat;
187 int error = vfs_lstat(filename, &stat);
188
189 if (!error)
190 error = cp_compat_stat64(&stat, statbuf);
191 return error;
192}
193
194asmlinkage long compat_sys_fstat64(unsigned int fd,
195 struct compat_stat64 __user * statbuf)
196{
197 struct kstat stat;
198 int error = vfs_fstat(fd, &stat);
199
200 if (!error)
201 error = cp_compat_stat64(&stat, statbuf);
202 return error;
203}
204
205asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename,
206 struct compat_stat64 __user * statbuf, int flag)
207{
208 struct kstat stat;
209 int error = -EINVAL;
210
211 if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
212 goto out;
213
214 if (flag & AT_SYMLINK_NOFOLLOW)
215 error = vfs_lstat_fd(dfd, filename, &stat);
216 else
217 error = vfs_stat_fd(dfd, filename, &stat);
218
219 if (!error)
220 error = cp_compat_stat64(&stat, statbuf);
221
222out:
223 return error;
224}
225
226asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
227{
228 return sys_sysfs(option, arg1, arg2);
229}
230
231asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
232{
233 struct timespec t;
234 int ret;
235 mm_segment_t old_fs = get_fs ();
236
237 set_fs (KERNEL_DS);
238 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
239 set_fs (old_fs);
240 if (put_compat_timespec(&t, interval))
241 return -EFAULT;
242 return ret;
243}
244
245asmlinkage long compat_sys_rt_sigprocmask(int how,
246 compat_sigset_t __user *set,
247 compat_sigset_t __user *oset,
248 compat_size_t sigsetsize)
249{
250 sigset_t s;
251 compat_sigset_t s32;
252 int ret;
253 mm_segment_t old_fs = get_fs();
254
255 if (set) {
256 if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
257 return -EFAULT;
258 switch (_NSIG_WORDS) {
259 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
260 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
261 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
262 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
263 }
264 }
265 set_fs (KERNEL_DS);
266 ret = sys_rt_sigprocmask(how,
267 set ? (sigset_t __user *) &s : NULL,
268 oset ? (sigset_t __user *) &s : NULL,
269 sigsetsize);
270 set_fs (old_fs);
271 if (ret) return ret;
272 if (oset) {
273 switch (_NSIG_WORDS) {
274 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
275 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
276 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
277 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
278 }
279 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
280 return -EFAULT;
281 }
282 return 0;
283}
284
285asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
286 compat_size_t sigsetsize)
287{
288 sigset_t s;
289 compat_sigset_t s32;
290 int ret;
291 mm_segment_t old_fs = get_fs();
292
293 set_fs (KERNEL_DS);
294 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
295 set_fs (old_fs);
296 if (!ret) {
297 switch (_NSIG_WORDS) {
298 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
299 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
300 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
301 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
302 }
303 if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
304 return -EFAULT;
305 }
306 return ret;
307}
308
309asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
310 struct compat_siginfo __user *uinfo)
311{
312 siginfo_t info;
313 int ret;
314 mm_segment_t old_fs = get_fs();
315
316 if (copy_siginfo_from_user32(&info, uinfo))
317 return -EFAULT;
318
319 set_fs (KERNEL_DS);
320 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
321 set_fs (old_fs);
322 return ret;
323}
324
325asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
326 struct old_sigaction32 __user *oact)
327{
328 struct k_sigaction new_ka, old_ka;
329 int ret;
330
331 WARN_ON_ONCE(sig >= 0);
332 sig = -sig;
333
334 if (act) {
335 compat_old_sigset_t mask;
336 u32 u_handler, u_restorer;
337
338 ret = get_user(u_handler, &act->sa_handler);
339 new_ka.sa.sa_handler = compat_ptr(u_handler);
340 ret |= __get_user(u_restorer, &act->sa_restorer);
341 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
342 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
343 ret |= __get_user(mask, &act->sa_mask);
344 if (ret)
345 return ret;
346 new_ka.ka_restorer = NULL;
347 siginitset(&new_ka.sa.sa_mask, mask);
348 }
349
350 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
351
352 if (!ret && oact) {
353 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
354 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
355 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
356 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
357 }
358
359 return ret;
360}
361
362asmlinkage long compat_sys_rt_sigaction(int sig,
363 struct sigaction32 __user *act,
364 struct sigaction32 __user *oact,
365 void __user *restorer,
366 compat_size_t sigsetsize)
367{
368 struct k_sigaction new_ka, old_ka;
369 int ret;
370 compat_sigset_t set32;
371
372 /* XXX: Don't preclude handling different sized sigset_t's. */
373 if (sigsetsize != sizeof(compat_sigset_t))
374 return -EINVAL;
375
376 if (act) {
377 u32 u_handler, u_restorer;
378
379 new_ka.ka_restorer = restorer;
380 ret = get_user(u_handler, &act->sa_handler);
381 new_ka.sa.sa_handler = compat_ptr(u_handler);
382 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
383 switch (_NSIG_WORDS) {
384 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
385 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
386 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
387 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
388 }
389 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
390 ret |= __get_user(u_restorer, &act->sa_restorer);
391 new_ka.sa.sa_restorer = compat_ptr(u_restorer);
392 if (ret)
393 return -EFAULT;
394 }
395
396 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
397
398 if (!ret && oact) {
399 switch (_NSIG_WORDS) {
400 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
401 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
402 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
403 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
404 }
405 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
406 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
407 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
408 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
409 if (ret)
410 ret = -EFAULT;
411 }
412
413 return ret;
414}
415
416/*
417 * sparc32_execve() executes a new program after the asm stub has set
418 * things up for us. This should basically do what I want it to.
419 */
420asmlinkage long sparc32_execve(struct pt_regs *regs)
421{
422 int error, base = 0;
423 char *filename;
424
425 /* User register window flush is done by entry.S */
426
427 /* Check for indirect call. */
428 if ((u32)regs->u_regs[UREG_G1] == 0)
429 base = 1;
430
431 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
432 error = PTR_ERR(filename);
433 if (IS_ERR(filename))
434 goto out;
435
436 error = compat_do_execve(filename,
437 compat_ptr(regs->u_regs[base + UREG_I1]),
438 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
439
440 putname(filename);
441
442 if (!error) {
443 fprs_write(0);
444 current_thread_info()->xfsr[0] = 0;
445 current_thread_info()->fpsaved[0] = 0;
446 regs->tstate &= ~TSTATE_PEF;
447 }
448out:
449 return error;
450}
451
452#ifdef CONFIG_MODULES
453
454asmlinkage long sys32_init_module(void __user *umod, u32 len,
455 const char __user *uargs)
456{
457 return sys_init_module(umod, len, uargs);
458}
459
460asmlinkage long sys32_delete_module(const char __user *name_user,
461 unsigned int flags)
462{
463 return sys_delete_module(name_user, flags);
464}
465
466#else /* CONFIG_MODULES */
467
468asmlinkage long sys32_init_module(const char __user *name_user,
469 struct module __user *mod_user)
470{
471 return -ENOSYS;
472}
473
474asmlinkage long sys32_delete_module(const char __user *name_user)
475{
476 return -ENOSYS;
477}
478
479#endif /* CONFIG_MODULES */
480
481asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
482 char __user *ubuf,
483 compat_size_t count,
484 unsigned long poshi,
485 unsigned long poslo)
486{
487 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
488}
489
490asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
491 char __user *ubuf,
492 compat_size_t count,
493 unsigned long poshi,
494 unsigned long poslo)
495{
496 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
497}
498
499asmlinkage long compat_sys_readahead(int fd,
500 unsigned long offhi,
501 unsigned long offlo,
502 compat_size_t count)
503{
504 return sys_readahead(fd, (offhi << 32) | offlo, count);
505}
506
507long compat_sys_fadvise64(int fd,
508 unsigned long offhi,
509 unsigned long offlo,
510 compat_size_t len, int advice)
511{
512 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
513}
514
515long compat_sys_fadvise64_64(int fd,
516 unsigned long offhi, unsigned long offlo,
517 unsigned long lenhi, unsigned long lenlo,
518 int advice)
519{
520 return sys_fadvise64_64(fd,
521 (offhi << 32) | offlo,
522 (lenhi << 32) | lenlo,
523 advice);
524}
525
526asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
527 compat_off_t __user *offset,
528 compat_size_t count)
529{
530 mm_segment_t old_fs = get_fs();
531 int ret;
532 off_t of;
533
534 if (offset && get_user(of, offset))
535 return -EFAULT;
536
537 set_fs(KERNEL_DS);
538 ret = sys_sendfile(out_fd, in_fd,
539 offset ? (off_t __user *) &of : NULL,
540 count);
541 set_fs(old_fs);
542
543 if (offset && put_user(of, offset))
544 return -EFAULT;
545
546 return ret;
547}
548
549asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
550 compat_loff_t __user *offset,
551 compat_size_t count)
552{
553 mm_segment_t old_fs = get_fs();
554 int ret;
555 loff_t lof;
556
557 if (offset && get_user(lof, offset))
558 return -EFAULT;
559
560 set_fs(KERNEL_DS);
561 ret = sys_sendfile64(out_fd, in_fd,
562 offset ? (loff_t __user *) &lof : NULL,
563 count);
564 set_fs(old_fs);
565
566 if (offset && put_user(lof, offset))
567 return -EFAULT;
568
569 return ret;
570}
571
572/* This is just a version for 32-bit applications which does
573 * not force O_LARGEFILE on.
574 */
575
576asmlinkage long sparc32_open(const char __user *filename,
577 int flags, int mode)
578{
579 return do_sys_open(AT_FDCWD, filename, flags, mode);
580}
581
582extern unsigned long do_mremap(unsigned long addr,
583 unsigned long old_len, unsigned long new_len,
584 unsigned long flags, unsigned long new_addr);
585
586asmlinkage unsigned long sys32_mremap(unsigned long addr,
587 unsigned long old_len, unsigned long new_len,
588 unsigned long flags, u32 __new_addr)
589{
590 unsigned long ret = -EINVAL;
591 unsigned long new_addr = __new_addr;
592
593 if (unlikely(sparc_mmap_check(addr, old_len)))
594 goto out;
595 if (unlikely(sparc_mmap_check(new_addr, new_len)))
596 goto out;
597 down_write(&current->mm->mmap_sem);
598 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
599 up_write(&current->mm->mmap_sem);
600out:
601 return ret;
602}
603
604struct __sysctl_args32 {
605 u32 name;
606 int nlen;
607 u32 oldval;
608 u32 oldlenp;
609 u32 newval;
610 u32 newlen;
611 u32 __unused[4];
612};
613
614asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
615{
616#ifndef CONFIG_SYSCTL_SYSCALL
617 return -ENOSYS;
618#else
619 struct __sysctl_args32 tmp;
620 int error;
621 size_t oldlen, __user *oldlenp = NULL;
622 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
623
624 if (copy_from_user(&tmp, args, sizeof(tmp)))
625 return -EFAULT;
626
627 if (tmp.oldval && tmp.oldlenp) {
628 /* Duh, this is ugly and might not work if sysctl_args
629 is in read-only memory, but do_sysctl does indirectly
630 a lot of uaccess in both directions and we'd have to
631 basically copy the whole sysctl.c here, and
632 glibc's __sysctl uses rw memory for the structure
633 anyway. */
634 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
635 put_user(oldlen, (size_t __user *)addr))
636 return -EFAULT;
637 oldlenp = (size_t __user *)addr;
638 }
639
640 lock_kernel();
641 error = do_sysctl((int __user *)(unsigned long) tmp.name,
642 tmp.nlen,
643 (void __user *)(unsigned long) tmp.oldval,
644 oldlenp,
645 (void __user *)(unsigned long) tmp.newval,
646 tmp.newlen);
647 unlock_kernel();
648 if (oldlenp) {
649 if (!error) {
650 if (get_user(oldlen, (size_t __user *)addr) ||
651 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
652 error = -EFAULT;
653 }
654 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
655 error = -EFAULT;
656 }
657 return error;
658#endif
659}
660
661long sys32_lookup_dcookie(unsigned long cookie_high,
662 unsigned long cookie_low,
663 char __user *buf, size_t len)
664{
665 return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
666 buf, len);
667}
668
669long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags)
670{
671 return sys_sync_file_range(fd,
672 (off_high << 32) | off_low,
673 (nb_high << 32) | nb_low,
674 flags);
675}
676
677asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
678 u32 lenhi, u32 lenlo)
679{
680 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
681 ((loff_t)lenhi << 32) | lenlo);
682}
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
new file mode 100644
index 000000000000..39749e32dc7e
--- /dev/null
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -0,0 +1,914 @@
1/* linux/arch/sparc64/kernel/sys_sparc.c
2 *
3 * This file contains various random system calls that
4 * have a non-standard calling sequence on the Linux/sparc
5 * platform.
6 */
7
8#include <linux/errno.h>
9#include <linux/types.h>
10#include <linux/sched.h>
11#include <linux/fs.h>
12#include <linux/file.h>
13#include <linux/mm.h>
14#include <linux/sem.h>
15#include <linux/msg.h>
16#include <linux/shm.h>
17#include <linux/stat.h>
18#include <linux/mman.h>
19#include <linux/utsname.h>
20#include <linux/smp.h>
21#include <linux/slab.h>
22#include <linux/syscalls.h>
23#include <linux/ipc.h>
24#include <linux/personality.h>
25#include <linux/random.h>
26
27#include <asm/uaccess.h>
28#include <asm/utrap.h>
29#include <asm/perfctr.h>
30#include <asm/unistd.h>
31
32#include "entry.h"
33#include "systbls.h"
34
35/* #define DEBUG_UNIMP_SYSCALL */
36
37asmlinkage unsigned long sys_getpagesize(void)
38{
39 return PAGE_SIZE;
40}
41
42#define VA_EXCLUDE_START (0x0000080000000000UL - (1UL << 32UL))
43#define VA_EXCLUDE_END (0xfffff80000000000UL + (1UL << 32UL))
44
45/* Does addr --> addr+len fall within 4GB of the VA-space hole or
46 * overflow past the end of the 64-bit address space?
47 */
48static inline int invalid_64bit_range(unsigned long addr, unsigned long len)
49{
50 unsigned long va_exclude_start, va_exclude_end;
51
52 va_exclude_start = VA_EXCLUDE_START;
53 va_exclude_end = VA_EXCLUDE_END;
54
55 if (unlikely(len >= va_exclude_start))
56 return 1;
57
58 if (unlikely((addr + len) < addr))
59 return 1;
60
61 if (unlikely((addr >= va_exclude_start && addr < va_exclude_end) ||
62 ((addr + len) >= va_exclude_start &&
63 (addr + len) < va_exclude_end)))
64 return 1;
65
66 return 0;
67}
68
69/* Does start,end straddle the VA-space hole? */
70static inline int straddles_64bit_va_hole(unsigned long start, unsigned long end)
71{
72 unsigned long va_exclude_start, va_exclude_end;
73
74 va_exclude_start = VA_EXCLUDE_START;
75 va_exclude_end = VA_EXCLUDE_END;
76
77 if (likely(start < va_exclude_start && end < va_exclude_start))
78 return 0;
79
80 if (likely(start >= va_exclude_end && end >= va_exclude_end))
81 return 0;
82
83 return 1;
84}
85
86/* These functions differ from the default implementations in
87 * mm/mmap.c in two ways:
88 *
89 * 1) For file backed MAP_SHARED mmap()'s we D-cache color align,
90 * for fixed such mappings we just validate what the user gave us.
91 * 2) For 64-bit tasks we avoid mapping anything within 4GB of
92 * the spitfire/niagara VA-hole.
93 */
94
95static inline unsigned long COLOUR_ALIGN(unsigned long addr,
96 unsigned long pgoff)
97{
98 unsigned long base = (addr+SHMLBA-1)&~(SHMLBA-1);
99 unsigned long off = (pgoff<<PAGE_SHIFT) & (SHMLBA-1);
100
101 return base + off;
102}
103
104static inline unsigned long COLOUR_ALIGN_DOWN(unsigned long addr,
105 unsigned long pgoff)
106{
107 unsigned long base = addr & ~(SHMLBA-1);
108 unsigned long off = (pgoff<<PAGE_SHIFT) & (SHMLBA-1);
109
110 if (base + off <= addr)
111 return base + off;
112 return base - off;
113}
114
115unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags)
116{
117 struct mm_struct *mm = current->mm;
118 struct vm_area_struct * vma;
119 unsigned long task_size = TASK_SIZE;
120 unsigned long start_addr;
121 int do_color_align;
122
123 if (flags & MAP_FIXED) {
124 /* We do not accept a shared mapping if it would violate
125 * cache aliasing constraints.
126 */
127 if ((flags & MAP_SHARED) &&
128 ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
129 return -EINVAL;
130 return addr;
131 }
132
133 if (test_thread_flag(TIF_32BIT))
134 task_size = STACK_TOP32;
135 if (unlikely(len > task_size || len >= VA_EXCLUDE_START))
136 return -ENOMEM;
137
138 do_color_align = 0;
139 if (filp || (flags & MAP_SHARED))
140 do_color_align = 1;
141
142 if (addr) {
143 if (do_color_align)
144 addr = COLOUR_ALIGN(addr, pgoff);
145 else
146 addr = PAGE_ALIGN(addr);
147
148 vma = find_vma(mm, addr);
149 if (task_size - len >= addr &&
150 (!vma || addr + len <= vma->vm_start))
151 return addr;
152 }
153
154 if (len > mm->cached_hole_size) {
155 start_addr = addr = mm->free_area_cache;
156 } else {
157 start_addr = addr = TASK_UNMAPPED_BASE;
158 mm->cached_hole_size = 0;
159 }
160
161 task_size -= len;
162
163full_search:
164 if (do_color_align)
165 addr = COLOUR_ALIGN(addr, pgoff);
166 else
167 addr = PAGE_ALIGN(addr);
168
169 for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
170 /* At this point: (!vma || addr < vma->vm_end). */
171 if (addr < VA_EXCLUDE_START &&
172 (addr + len) >= VA_EXCLUDE_START) {
173 addr = VA_EXCLUDE_END;
174 vma = find_vma(mm, VA_EXCLUDE_END);
175 }
176 if (unlikely(task_size < addr)) {
177 if (start_addr != TASK_UNMAPPED_BASE) {
178 start_addr = addr = TASK_UNMAPPED_BASE;
179 mm->cached_hole_size = 0;
180 goto full_search;
181 }
182 return -ENOMEM;
183 }
184 if (likely(!vma || addr + len <= vma->vm_start)) {
185 /*
186 * Remember the place where we stopped the search:
187 */
188 mm->free_area_cache = addr + len;
189 return addr;
190 }
191 if (addr + mm->cached_hole_size < vma->vm_start)
192 mm->cached_hole_size = vma->vm_start - addr;
193
194 addr = vma->vm_end;
195 if (do_color_align)
196 addr = COLOUR_ALIGN(addr, pgoff);
197 }
198}
199
200unsigned long
201arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
202 const unsigned long len, const unsigned long pgoff,
203 const unsigned long flags)
204{
205 struct vm_area_struct *vma;
206 struct mm_struct *mm = current->mm;
207 unsigned long task_size = STACK_TOP32;
208 unsigned long addr = addr0;
209 int do_color_align;
210
211 /* This should only ever run for 32-bit processes. */
212 BUG_ON(!test_thread_flag(TIF_32BIT));
213
214 if (flags & MAP_FIXED) {
215 /* We do not accept a shared mapping if it would violate
216 * cache aliasing constraints.
217 */
218 if ((flags & MAP_SHARED) &&
219 ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
220 return -EINVAL;
221 return addr;
222 }
223
224 if (unlikely(len > task_size))
225 return -ENOMEM;
226
227 do_color_align = 0;
228 if (filp || (flags & MAP_SHARED))
229 do_color_align = 1;
230
231 /* requesting a specific address */
232 if (addr) {
233 if (do_color_align)
234 addr = COLOUR_ALIGN(addr, pgoff);
235 else
236 addr = PAGE_ALIGN(addr);
237
238 vma = find_vma(mm, addr);
239 if (task_size - len >= addr &&
240 (!vma || addr + len <= vma->vm_start))
241 return addr;
242 }
243
244 /* check if free_area_cache is useful for us */
245 if (len <= mm->cached_hole_size) {
246 mm->cached_hole_size = 0;
247 mm->free_area_cache = mm->mmap_base;
248 }
249
250 /* either no address requested or can't fit in requested address hole */
251 addr = mm->free_area_cache;
252 if (do_color_align) {
253 unsigned long base = COLOUR_ALIGN_DOWN(addr-len, pgoff);
254
255 addr = base + len;
256 }
257
258 /* make sure it can fit in the remaining address space */
259 if (likely(addr > len)) {
260 vma = find_vma(mm, addr-len);
261 if (!vma || addr <= vma->vm_start) {
262 /* remember the address as a hint for next time */
263 return (mm->free_area_cache = addr-len);
264 }
265 }
266
267 if (unlikely(mm->mmap_base < len))
268 goto bottomup;
269
270 addr = mm->mmap_base-len;
271 if (do_color_align)
272 addr = COLOUR_ALIGN_DOWN(addr, pgoff);
273
274 do {
275 /*
276 * Lookup failure means no vma is above this address,
277 * else if new region fits below vma->vm_start,
278 * return with success:
279 */
280 vma = find_vma(mm, addr);
281 if (likely(!vma || addr+len <= vma->vm_start)) {
282 /* remember the address as a hint for next time */
283 return (mm->free_area_cache = addr);
284 }
285
286 /* remember the largest hole we saw so far */
287 if (addr + mm->cached_hole_size < vma->vm_start)
288 mm->cached_hole_size = vma->vm_start - addr;
289
290 /* try just below the current vma->vm_start */
291 addr = vma->vm_start-len;
292 if (do_color_align)
293 addr = COLOUR_ALIGN_DOWN(addr, pgoff);
294 } while (likely(len < vma->vm_start));
295
296bottomup:
297 /*
298 * A failed mmap() very likely causes application failure,
299 * so fall back to the bottom-up function here. This scenario
300 * can happen with large stack limits and large mmap()
301 * allocations.
302 */
303 mm->cached_hole_size = ~0UL;
304 mm->free_area_cache = TASK_UNMAPPED_BASE;
305 addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
306 /*
307 * Restore the topdown base:
308 */
309 mm->free_area_cache = mm->mmap_base;
310 mm->cached_hole_size = ~0UL;
311
312 return addr;
313}
314
315/* Try to align mapping such that we align it as much as possible. */
316unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
317{
318 unsigned long align_goal, addr = -ENOMEM;
319
320 if (flags & MAP_FIXED) {
321 /* Ok, don't mess with it. */
322 return get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
323 }
324 flags &= ~MAP_SHARED;
325
326 align_goal = PAGE_SIZE;
327 if (len >= (4UL * 1024 * 1024))
328 align_goal = (4UL * 1024 * 1024);
329 else if (len >= (512UL * 1024))
330 align_goal = (512UL * 1024);
331 else if (len >= (64UL * 1024))
332 align_goal = (64UL * 1024);
333
334 do {
335 addr = get_unmapped_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags);
336 if (!(addr & ~PAGE_MASK)) {
337 addr = (addr + (align_goal - 1UL)) & ~(align_goal - 1UL);
338 break;
339 }
340
341 if (align_goal == (4UL * 1024 * 1024))
342 align_goal = (512UL * 1024);
343 else if (align_goal == (512UL * 1024))
344 align_goal = (64UL * 1024);
345 else
346 align_goal = PAGE_SIZE;
347 } while ((addr & ~PAGE_MASK) && align_goal > PAGE_SIZE);
348
349 /* Mapping is smaller than 64K or larger areas could not
350 * be obtained.
351 */
352 if (addr & ~PAGE_MASK)
353 addr = get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
354
355 return addr;
356}
357
358/* Essentially the same as PowerPC... */
359void arch_pick_mmap_layout(struct mm_struct *mm)
360{
361 unsigned long random_factor = 0UL;
362
363 if (current->flags & PF_RANDOMIZE) {
364 random_factor = get_random_int();
365 if (test_thread_flag(TIF_32BIT))
366 random_factor &= ((1 * 1024 * 1024) - 1);
367 else
368 random_factor = ((random_factor << PAGE_SHIFT) &
369 0xffffffffUL);
370 }
371
372 /*
373 * Fall back to the standard layout if the personality
374 * bit is set, or if the expected stack growth is unlimited:
375 */
376 if (!test_thread_flag(TIF_32BIT) ||
377 (current->personality & ADDR_COMPAT_LAYOUT) ||
378 current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY ||
379 sysctl_legacy_va_layout) {
380 mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
381 mm->get_unmapped_area = arch_get_unmapped_area;
382 mm->unmap_area = arch_unmap_area;
383 } else {
384 /* We know it's 32-bit */
385 unsigned long task_size = STACK_TOP32;
386 unsigned long gap;
387
388 gap = current->signal->rlim[RLIMIT_STACK].rlim_cur;
389 if (gap < 128 * 1024 * 1024)
390 gap = 128 * 1024 * 1024;
391 if (gap > (task_size / 6 * 5))
392 gap = (task_size / 6 * 5);
393
394 mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor);
395 mm->get_unmapped_area = arch_get_unmapped_area_topdown;
396 mm->unmap_area = arch_unmap_area_topdown;
397 }
398}
399
400asmlinkage unsigned long sparc_brk(unsigned long brk)
401{
402 /* People could try to be nasty and use ta 0x6d in 32bit programs */
403 if (test_thread_flag(TIF_32BIT) && brk >= STACK_TOP32)
404 return current->mm->brk;
405
406 if (unlikely(straddles_64bit_va_hole(current->mm->brk, brk)))
407 return current->mm->brk;
408
409 return sys_brk(brk);
410}
411
412/*
413 * sys_pipe() is the normal C calling standard for creating
414 * a pipe. It's not the way unix traditionally does this, though.
415 */
416asmlinkage long sparc_pipe(struct pt_regs *regs)
417{
418 int fd[2];
419 int error;
420
421 error = do_pipe_flags(fd, 0);
422 if (error)
423 goto out;
424 regs->u_regs[UREG_I1] = fd[1];
425 error = fd[0];
426out:
427 return error;
428}
429
430/*
431 * sys_ipc() is the de-multiplexer for the SysV IPC calls..
432 *
433 * This is really horribly ugly.
434 */
435
436asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
437 unsigned long third, void __user *ptr, long fifth)
438{
439 long err;
440
441 /* No need for backward compatibility. We can start fresh... */
442 if (call <= SEMCTL) {
443 switch (call) {
444 case SEMOP:
445 err = sys_semtimedop(first, ptr,
446 (unsigned)second, NULL);
447 goto out;
448 case SEMTIMEDOP:
449 err = sys_semtimedop(first, ptr, (unsigned)second,
450 (const struct timespec __user *)
451 (unsigned long) fifth);
452 goto out;
453 case SEMGET:
454 err = sys_semget(first, (int)second, (int)third);
455 goto out;
456 case SEMCTL: {
457 err = sys_semctl(first, second,
458 (int)third | IPC_64,
459 (union semun) ptr);
460 goto out;
461 }
462 default:
463 err = -ENOSYS;
464 goto out;
465 };
466 }
467 if (call <= MSGCTL) {
468 switch (call) {
469 case MSGSND:
470 err = sys_msgsnd(first, ptr, (size_t)second,
471 (int)third);
472 goto out;
473 case MSGRCV:
474 err = sys_msgrcv(first, ptr, (size_t)second, fifth,
475 (int)third);
476 goto out;
477 case MSGGET:
478 err = sys_msgget((key_t)first, (int)second);
479 goto out;
480 case MSGCTL:
481 err = sys_msgctl(first, (int)second | IPC_64, ptr);
482 goto out;
483 default:
484 err = -ENOSYS;
485 goto out;
486 };
487 }
488 if (call <= SHMCTL) {
489 switch (call) {
490 case SHMAT: {
491 ulong raddr;
492 err = do_shmat(first, ptr, (int)second, &raddr);
493 if (!err) {
494 if (put_user(raddr,
495 (ulong __user *) third))
496 err = -EFAULT;
497 }
498 goto out;
499 }
500 case SHMDT:
501 err = sys_shmdt(ptr);
502 goto out;
503 case SHMGET:
504 err = sys_shmget(first, (size_t)second, (int)third);
505 goto out;
506 case SHMCTL:
507 err = sys_shmctl(first, (int)second | IPC_64, ptr);
508 goto out;
509 default:
510 err = -ENOSYS;
511 goto out;
512 };
513 } else {
514 err = -ENOSYS;
515 }
516out:
517 return err;
518}
519
520asmlinkage long sparc64_newuname(struct new_utsname __user *name)
521{
522 int ret = sys_newuname(name);
523
524 if (current->personality == PER_LINUX32 && !ret) {
525 ret = (copy_to_user(name->machine, "sparc\0\0", 8)
526 ? -EFAULT : 0);
527 }
528 return ret;
529}
530
531asmlinkage long sparc64_personality(unsigned long personality)
532{
533 int ret;
534
535 if (current->personality == PER_LINUX32 &&
536 personality == PER_LINUX)
537 personality = PER_LINUX32;
538 ret = sys_personality(personality);
539 if (ret == PER_LINUX32)
540 ret = PER_LINUX;
541
542 return ret;
543}
544
545int sparc_mmap_check(unsigned long addr, unsigned long len)
546{
547 if (test_thread_flag(TIF_32BIT)) {
548 if (len >= STACK_TOP32)
549 return -EINVAL;
550
551 if (addr > STACK_TOP32 - len)
552 return -EINVAL;
553 } else {
554 if (len >= VA_EXCLUDE_START)
555 return -EINVAL;
556
557 if (invalid_64bit_range(addr, len))
558 return -EINVAL;
559 }
560
561 return 0;
562}
563
564/* Linux version of mmap */
565asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
566 unsigned long prot, unsigned long flags, unsigned long fd,
567 unsigned long off)
568{
569 struct file * file = NULL;
570 unsigned long retval = -EBADF;
571
572 if (!(flags & MAP_ANONYMOUS)) {
573 file = fget(fd);
574 if (!file)
575 goto out;
576 }
577 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
578 len = PAGE_ALIGN(len);
579
580 down_write(&current->mm->mmap_sem);
581 retval = do_mmap(file, addr, len, prot, flags, off);
582 up_write(&current->mm->mmap_sem);
583
584 if (file)
585 fput(file);
586out:
587 return retval;
588}
589
590asmlinkage long sys64_munmap(unsigned long addr, size_t len)
591{
592 long ret;
593
594 if (invalid_64bit_range(addr, len))
595 return -EINVAL;
596
597 down_write(&current->mm->mmap_sem);
598 ret = do_munmap(current->mm, addr, len);
599 up_write(&current->mm->mmap_sem);
600 return ret;
601}
602
603extern unsigned long do_mremap(unsigned long addr,
604 unsigned long old_len, unsigned long new_len,
605 unsigned long flags, unsigned long new_addr);
606
607asmlinkage unsigned long sys64_mremap(unsigned long addr,
608 unsigned long old_len, unsigned long new_len,
609 unsigned long flags, unsigned long new_addr)
610{
611 unsigned long ret = -EINVAL;
612
613 if (test_thread_flag(TIF_32BIT))
614 goto out;
615 if (unlikely(new_len >= VA_EXCLUDE_START))
616 goto out;
617 if (unlikely(sparc_mmap_check(addr, old_len)))
618 goto out;
619 if (unlikely(sparc_mmap_check(new_addr, new_len)))
620 goto out;
621
622 down_write(&current->mm->mmap_sem);
623 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
624 up_write(&current->mm->mmap_sem);
625out:
626 return ret;
627}
628
629/* we come to here via sys_nis_syscall so it can setup the regs argument */
630asmlinkage unsigned long c_sys_nis_syscall(struct pt_regs *regs)
631{
632 static int count;
633
634 /* Don't make the system unusable, if someone goes stuck */
635 if (count++ > 5)
636 return -ENOSYS;
637
638 printk ("Unimplemented SPARC system call %ld\n",regs->u_regs[1]);
639#ifdef DEBUG_UNIMP_SYSCALL
640 show_regs (regs);
641#endif
642
643 return -ENOSYS;
644}
645
646/* #define DEBUG_SPARC_BREAKPOINT */
647
648asmlinkage void sparc_breakpoint(struct pt_regs *regs)
649{
650 siginfo_t info;
651
652 if (test_thread_flag(TIF_32BIT)) {
653 regs->tpc &= 0xffffffff;
654 regs->tnpc &= 0xffffffff;
655 }
656#ifdef DEBUG_SPARC_BREAKPOINT
657 printk ("TRAP: Entering kernel PC=%lx, nPC=%lx\n", regs->tpc, regs->tnpc);
658#endif
659 info.si_signo = SIGTRAP;
660 info.si_errno = 0;
661 info.si_code = TRAP_BRKPT;
662 info.si_addr = (void __user *)regs->tpc;
663 info.si_trapno = 0;
664 force_sig_info(SIGTRAP, &info, current);
665#ifdef DEBUG_SPARC_BREAKPOINT
666 printk ("TRAP: Returning to space: PC=%lx nPC=%lx\n", regs->tpc, regs->tnpc);
667#endif
668}
669
670extern void check_pending(int signum);
671
672asmlinkage long sys_getdomainname(char __user *name, int len)
673{
674 int nlen, err;
675
676 if (len < 0)
677 return -EINVAL;
678
679 down_read(&uts_sem);
680
681 nlen = strlen(utsname()->domainname) + 1;
682 err = -EINVAL;
683 if (nlen > len)
684 goto out;
685
686 err = -EFAULT;
687 if (!copy_to_user(name, utsname()->domainname, nlen))
688 err = 0;
689
690out:
691 up_read(&uts_sem);
692 return err;
693}
694
695asmlinkage long sys_utrap_install(utrap_entry_t type,
696 utrap_handler_t new_p,
697 utrap_handler_t new_d,
698 utrap_handler_t __user *old_p,
699 utrap_handler_t __user *old_d)
700{
701 if (type < UT_INSTRUCTION_EXCEPTION || type > UT_TRAP_INSTRUCTION_31)
702 return -EINVAL;
703 if (new_p == (utrap_handler_t)(long)UTH_NOCHANGE) {
704 if (old_p) {
705 if (!current_thread_info()->utraps) {
706 if (put_user(NULL, old_p))
707 return -EFAULT;
708 } else {
709 if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p))
710 return -EFAULT;
711 }
712 }
713 if (old_d) {
714 if (put_user(NULL, old_d))
715 return -EFAULT;
716 }
717 return 0;
718 }
719 if (!current_thread_info()->utraps) {
720 current_thread_info()->utraps =
721 kzalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), GFP_KERNEL);
722 if (!current_thread_info()->utraps)
723 return -ENOMEM;
724 current_thread_info()->utraps[0] = 1;
725 } else {
726 if ((utrap_handler_t)current_thread_info()->utraps[type] != new_p &&
727 current_thread_info()->utraps[0] > 1) {
728 unsigned long *p = current_thread_info()->utraps;
729
730 current_thread_info()->utraps =
731 kmalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long),
732 GFP_KERNEL);
733 if (!current_thread_info()->utraps) {
734 current_thread_info()->utraps = p;
735 return -ENOMEM;
736 }
737 p[0]--;
738 current_thread_info()->utraps[0] = 1;
739 memcpy(current_thread_info()->utraps+1, p+1,
740 UT_TRAP_INSTRUCTION_31*sizeof(long));
741 }
742 }
743 if (old_p) {
744 if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p))
745 return -EFAULT;
746 }
747 if (old_d) {
748 if (put_user(NULL, old_d))
749 return -EFAULT;
750 }
751 current_thread_info()->utraps[type] = (long)new_p;
752
753 return 0;
754}
755
756asmlinkage long sparc_memory_ordering(unsigned long model,
757 struct pt_regs *regs)
758{
759 if (model >= 3)
760 return -EINVAL;
761 regs->tstate = (regs->tstate & ~TSTATE_MM) | (model << 14);
762 return 0;
763}
764
765asmlinkage long sys_rt_sigaction(int sig,
766 const struct sigaction __user *act,
767 struct sigaction __user *oact,
768 void __user *restorer,
769 size_t sigsetsize)
770{
771 struct k_sigaction new_ka, old_ka;
772 int ret;
773
774 /* XXX: Don't preclude handling different sized sigset_t's. */
775 if (sigsetsize != sizeof(sigset_t))
776 return -EINVAL;
777
778 if (act) {
779 new_ka.ka_restorer = restorer;
780 if (copy_from_user(&new_ka.sa, act, sizeof(*act)))
781 return -EFAULT;
782 }
783
784 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
785
786 if (!ret && oact) {
787 if (copy_to_user(oact, &old_ka.sa, sizeof(*oact)))
788 return -EFAULT;
789 }
790
791 return ret;
792}
793
794/* Invoked by rtrap code to update performance counters in
795 * user space.
796 */
797asmlinkage void update_perfctrs(void)
798{
799 unsigned long pic, tmp;
800
801 read_pic(pic);
802 tmp = (current_thread_info()->kernel_cntd0 += (unsigned int)pic);
803 __put_user(tmp, current_thread_info()->user_cntd0);
804 tmp = (current_thread_info()->kernel_cntd1 += (pic >> 32));
805 __put_user(tmp, current_thread_info()->user_cntd1);
806 reset_pic();
807}
808
809asmlinkage long sys_perfctr(int opcode, unsigned long arg0, unsigned long arg1, unsigned long arg2)
810{
811 int err = 0;
812
813 switch(opcode) {
814 case PERFCTR_ON:
815 current_thread_info()->pcr_reg = arg2;
816 current_thread_info()->user_cntd0 = (u64 __user *) arg0;
817 current_thread_info()->user_cntd1 = (u64 __user *) arg1;
818 current_thread_info()->kernel_cntd0 =
819 current_thread_info()->kernel_cntd1 = 0;
820 write_pcr(arg2);
821 reset_pic();
822 set_thread_flag(TIF_PERFCTR);
823 break;
824
825 case PERFCTR_OFF:
826 err = -EINVAL;
827 if (test_thread_flag(TIF_PERFCTR)) {
828 current_thread_info()->user_cntd0 =
829 current_thread_info()->user_cntd1 = NULL;
830 current_thread_info()->pcr_reg = 0;
831 write_pcr(0);
832 clear_thread_flag(TIF_PERFCTR);
833 err = 0;
834 }
835 break;
836
837 case PERFCTR_READ: {
838 unsigned long pic, tmp;
839
840 if (!test_thread_flag(TIF_PERFCTR)) {
841 err = -EINVAL;
842 break;
843 }
844 read_pic(pic);
845 tmp = (current_thread_info()->kernel_cntd0 += (unsigned int)pic);
846 err |= __put_user(tmp, current_thread_info()->user_cntd0);
847 tmp = (current_thread_info()->kernel_cntd1 += (pic >> 32));
848 err |= __put_user(tmp, current_thread_info()->user_cntd1);
849 reset_pic();
850 break;
851 }
852
853 case PERFCTR_CLRPIC:
854 if (!test_thread_flag(TIF_PERFCTR)) {
855 err = -EINVAL;
856 break;
857 }
858 current_thread_info()->kernel_cntd0 =
859 current_thread_info()->kernel_cntd1 = 0;
860 reset_pic();
861 break;
862
863 case PERFCTR_SETPCR: {
864 u64 __user *user_pcr = (u64 __user *)arg0;
865
866 if (!test_thread_flag(TIF_PERFCTR)) {
867 err = -EINVAL;
868 break;
869 }
870 err |= __get_user(current_thread_info()->pcr_reg, user_pcr);
871 write_pcr(current_thread_info()->pcr_reg);
872 current_thread_info()->kernel_cntd0 =
873 current_thread_info()->kernel_cntd1 = 0;
874 reset_pic();
875 break;
876 }
877
878 case PERFCTR_GETPCR: {
879 u64 __user *user_pcr = (u64 __user *)arg0;
880
881 if (!test_thread_flag(TIF_PERFCTR)) {
882 err = -EINVAL;
883 break;
884 }
885 err |= __put_user(current_thread_info()->pcr_reg, user_pcr);
886 break;
887 }
888
889 default:
890 err = -EINVAL;
891 break;
892 };
893 return err;
894}
895
896/*
897 * Do a system call from kernel instead of calling sys_execve so we
898 * end up with proper pt_regs.
899 */
900int kernel_execve(const char *filename, char *const argv[], char *const envp[])
901{
902 long __res;
903 register long __g1 __asm__ ("g1") = __NR_execve;
904 register long __o0 __asm__ ("o0") = (long)(filename);
905 register long __o1 __asm__ ("o1") = (long)(argv);
906 register long __o2 __asm__ ("o2") = (long)(envp);
907 asm volatile ("t 0x6d\n\t"
908 "sub %%g0, %%o0, %0\n\t"
909 "movcc %%xcc, %%o0, %0\n\t"
910 : "=r" (__res), "=&r" (__o0)
911 : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1)
912 : "cc");
913 return __res;
914}
diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S
new file mode 100644
index 000000000000..7a6786a71363
--- /dev/null
+++ b/arch/sparc/kernel/syscalls.S
@@ -0,0 +1,279 @@
1 /* SunOS's execv() call only specifies the argv argument, the
2 * environment settings are the same as the calling processes.
3 */
4sys_execve:
5 sethi %hi(sparc_execve), %g1
6 ba,pt %xcc, execve_merge
7 or %g1, %lo(sparc_execve), %g1
8
9#ifdef CONFIG_COMPAT
10sunos_execv:
11 stx %g0, [%sp + PTREGS_OFF + PT_V9_I2]
12sys32_execve:
13 sethi %hi(sparc32_execve), %g1
14 or %g1, %lo(sparc32_execve), %g1
15#endif
16
17execve_merge:
18 flushw
19 jmpl %g1, %g0
20 add %sp, PTREGS_OFF, %o0
21
22 .align 32
23sys_pipe:
24 ba,pt %xcc, sparc_pipe
25 add %sp, PTREGS_OFF, %o0
26sys_nis_syscall:
27 ba,pt %xcc, c_sys_nis_syscall
28 add %sp, PTREGS_OFF, %o0
29sys_memory_ordering:
30 ba,pt %xcc, sparc_memory_ordering
31 add %sp, PTREGS_OFF, %o1
32sys_sigaltstack:
33 ba,pt %xcc, do_sigaltstack
34 add %i6, STACK_BIAS, %o2
35#ifdef CONFIG_COMPAT
36sys32_sigstack:
37 ba,pt %xcc, do_sys32_sigstack
38 mov %i6, %o2
39sys32_sigaltstack:
40 ba,pt %xcc, do_sys32_sigaltstack
41 mov %i6, %o2
42#endif
43 .align 32
44#ifdef CONFIG_COMPAT
45sys32_sigreturn:
46 add %sp, PTREGS_OFF, %o0
47 call do_sigreturn32
48 add %o7, 1f-.-4, %o7
49 nop
50#endif
51sys_rt_sigreturn:
52 add %sp, PTREGS_OFF, %o0
53 call do_rt_sigreturn
54 add %o7, 1f-.-4, %o7
55 nop
56#ifdef CONFIG_COMPAT
57sys32_rt_sigreturn:
58 add %sp, PTREGS_OFF, %o0
59 call do_rt_sigreturn32
60 add %o7, 1f-.-4, %o7
61 nop
62#endif
63 .align 32
641: ldx [%g6 + TI_FLAGS], %l5
65 andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
66 be,pt %icc, rtrap
67 nop
68 call syscall_trace_leave
69 add %sp, PTREGS_OFF, %o0
70 ba,pt %xcc, rtrap
71 nop
72
73 /* This is how fork() was meant to be done, 8 instruction entry.
74 *
75 * I questioned the following code briefly, let me clear things
76 * up so you must not reason on it like I did.
77 *
78 * Know the fork_kpsr etc. we use in the sparc32 port? We don't
79 * need it here because the only piece of window state we copy to
80 * the child is the CWP register. Even if the parent sleeps,
81 * we are safe because we stuck it into pt_regs of the parent
82 * so it will not change.
83 *
84 * XXX This raises the question, whether we can do the same on
85 * XXX sparc32 to get rid of fork_kpsr _and_ fork_kwim. The
86 * XXX answer is yes. We stick fork_kpsr in UREG_G0 and
87 * XXX fork_kwim in UREG_G1 (global registers are considered
88 * XXX volatile across a system call in the sparc ABI I think
89 * XXX if it isn't we can use regs->y instead, anyone who depends
90 * XXX upon the Y register being preserved across a fork deserves
91 * XXX to lose).
92 *
93 * In fact we should take advantage of that fact for other things
94 * during system calls...
95 */
96 .align 32
97sys_vfork: /* Under Linux, vfork and fork are just special cases of clone. */
98 sethi %hi(0x4000 | 0x0100 | SIGCHLD), %o0
99 or %o0, %lo(0x4000 | 0x0100 | SIGCHLD), %o0
100 ba,pt %xcc, sys_clone
101sys_fork:
102 clr %o1
103 mov SIGCHLD, %o0
104sys_clone:
105 flushw
106 movrz %o1, %fp, %o1
107 mov 0, %o3
108 ba,pt %xcc, sparc_do_fork
109 add %sp, PTREGS_OFF, %o2
110
111 .globl ret_from_syscall
112ret_from_syscall:
113 /* Clear current_thread_info()->new_child, and
114 * check performance counter stuff too.
115 */
116 stb %g0, [%g6 + TI_NEW_CHILD]
117 ldx [%g6 + TI_FLAGS], %l0
118 call schedule_tail
119 mov %g7, %o0
120 andcc %l0, _TIF_PERFCTR, %g0
121 be,pt %icc, 1f
122 nop
123 ldx [%g6 + TI_PCR], %o7
124 wr %g0, %o7, %pcr
125
126 /* Blackbird errata workaround. See commentary in
127 * smp.c:smp_percpu_timer_interrupt() for more
128 * information.
129 */
130 ba,pt %xcc, 99f
131 nop
132
133 .align 64
13499: wr %g0, %g0, %pic
135 rd %pic, %g0
136
1371: ba,pt %xcc, ret_sys_call
138 ldx [%sp + PTREGS_OFF + PT_V9_I0], %o0
139
140 .globl sparc_exit
141 .type sparc_exit,#function
142sparc_exit:
143 rdpr %pstate, %g2
144 wrpr %g2, PSTATE_IE, %pstate
145 rdpr %otherwin, %g1
146 rdpr %cansave, %g3
147 add %g3, %g1, %g3
148 wrpr %g3, 0x0, %cansave
149 wrpr %g0, 0x0, %otherwin
150 wrpr %g2, 0x0, %pstate
151 ba,pt %xcc, sys_exit
152 stb %g0, [%g6 + TI_WSAVED]
153 .size sparc_exit,.-sparc_exit
154
155linux_sparc_ni_syscall:
156 sethi %hi(sys_ni_syscall), %l7
157 ba,pt %xcc, 4f
158 or %l7, %lo(sys_ni_syscall), %l7
159
160linux_syscall_trace32:
161 call syscall_trace_enter
162 add %sp, PTREGS_OFF, %o0
163 brnz,pn %o0, 3f
164 mov -ENOSYS, %o0
165 srl %i0, 0, %o0
166 srl %i4, 0, %o4
167 srl %i1, 0, %o1
168 srl %i2, 0, %o2
169 ba,pt %xcc, 2f
170 srl %i3, 0, %o3
171
172linux_syscall_trace:
173 call syscall_trace_enter
174 add %sp, PTREGS_OFF, %o0
175 brnz,pn %o0, 3f
176 mov -ENOSYS, %o0
177 mov %i0, %o0
178 mov %i1, %o1
179 mov %i2, %o2
180 mov %i3, %o3
181 b,pt %xcc, 2f
182 mov %i4, %o4
183
184
185 /* Linux 32-bit system calls enter here... */
186 .align 32
187 .globl linux_sparc_syscall32
188linux_sparc_syscall32:
189 /* Direct access to user regs, much faster. */
190 cmp %g1, NR_SYSCALLS ! IEU1 Group
191 bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI
192 srl %i0, 0, %o0 ! IEU0
193 sll %g1, 2, %l4 ! IEU0 Group
194 srl %i4, 0, %o4 ! IEU1
195 lduw [%l7 + %l4], %l7 ! Load
196 srl %i1, 0, %o1 ! IEU0 Group
197 ldx [%g6 + TI_FLAGS], %l0 ! Load
198
199 srl %i5, 0, %o5 ! IEU1
200 srl %i2, 0, %o2 ! IEU0 Group
201 andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
202 bne,pn %icc, linux_syscall_trace32 ! CTI
203 mov %i0, %l5 ! IEU1
204 call %l7 ! CTI Group brk forced
205 srl %i3, 0, %o3 ! IEU0
206 ba,a,pt %xcc, 3f
207
208 /* Linux native system calls enter here... */
209 .align 32
210 .globl linux_sparc_syscall
211linux_sparc_syscall:
212 /* Direct access to user regs, much faster. */
213 cmp %g1, NR_SYSCALLS ! IEU1 Group
214 bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI
215 mov %i0, %o0 ! IEU0
216 sll %g1, 2, %l4 ! IEU0 Group
217 mov %i1, %o1 ! IEU1
218 lduw [%l7 + %l4], %l7 ! Load
2194: mov %i2, %o2 ! IEU0 Group
220 ldx [%g6 + TI_FLAGS], %l0 ! Load
221
222 mov %i3, %o3 ! IEU1
223 mov %i4, %o4 ! IEU0 Group
224 andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
225 bne,pn %icc, linux_syscall_trace ! CTI Group
226 mov %i0, %l5 ! IEU0
2272: call %l7 ! CTI Group brk forced
228 mov %i5, %o5 ! IEU0
229 nop
230
2313: stx %o0, [%sp + PTREGS_OFF + PT_V9_I0]
232ret_sys_call:
233 ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %g3
234 ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc
235 sra %o0, 0, %o0
236 mov %ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2
237 sllx %g2, 32, %g2
238
239 /* Check if force_successful_syscall_return()
240 * was invoked.
241 */
242 ldub [%g6 + TI_SYS_NOERROR], %l2
243 brnz,a,pn %l2, 80f
244 stb %g0, [%g6 + TI_SYS_NOERROR]
245
246 cmp %o0, -ERESTART_RESTARTBLOCK
247 bgeu,pn %xcc, 1f
248 andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6
24980:
250 /* System call success, clear Carry condition code. */
251 andn %g3, %g2, %g3
252 stx %g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]
253 bne,pn %icc, linux_syscall_trace2
254 add %l1, 0x4, %l2 ! npc = npc+4
255 stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC]
256 ba,pt %xcc, rtrap
257 stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
258
2591:
260 /* System call failure, set Carry condition code.
261 * Also, get abs(errno) to return to the process.
262 */
263 andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6
264 sub %g0, %o0, %o0
265 or %g3, %g2, %g3
266 stx %o0, [%sp + PTREGS_OFF + PT_V9_I0]
267 stx %g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]
268 bne,pn %icc, linux_syscall_trace2
269 add %l1, 0x4, %l2 ! npc = npc+4
270 stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC]
271
272 b,pt %xcc, rtrap
273 stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
274linux_syscall_trace2:
275 call syscall_trace_leave
276 add %sp, PTREGS_OFF, %o0
277 stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC]
278 ba,pt %xcc, rtrap
279 stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC]
diff --git a/arch/sparc/kernel/sysfs.c b/arch/sparc/kernel/sysfs.c
new file mode 100644
index 000000000000..84e5ce146713
--- /dev/null
+++ b/arch/sparc/kernel/sysfs.c
@@ -0,0 +1,313 @@
1/* sysfs.c: Toplogy sysfs support code for sparc64.
2 *
3 * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
4 */
5#include <linux/sysdev.h>
6#include <linux/cpu.h>
7#include <linux/smp.h>
8#include <linux/percpu.h>
9#include <linux/init.h>
10
11#include <asm/hypervisor.h>
12#include <asm/spitfire.h>
13
14static DEFINE_PER_CPU(struct hv_mmu_statistics, mmu_stats) __attribute__((aligned(64)));
15
16#define SHOW_MMUSTAT_ULONG(NAME) \
17static ssize_t show_##NAME(struct sys_device *dev, \
18 struct sysdev_attribute *attr, char *buf) \
19{ \
20 struct hv_mmu_statistics *p = &per_cpu(mmu_stats, dev->id); \
21 return sprintf(buf, "%lu\n", p->NAME); \
22} \
23static SYSDEV_ATTR(NAME, 0444, show_##NAME, NULL)
24
25SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_8k_tte);
26SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_8k_tte);
27SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_64k_tte);
28SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_64k_tte);
29SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_4mb_tte);
30SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_4mb_tte);
31SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_256mb_tte);
32SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_256mb_tte);
33SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_8k_tte);
34SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_8k_tte);
35SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_64k_tte);
36SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_64k_tte);
37SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_4mb_tte);
38SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_4mb_tte);
39SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_256mb_tte);
40SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_256mb_tte);
41SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_8k_tte);
42SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_8k_tte);
43SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_64k_tte);
44SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_64k_tte);
45SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_4mb_tte);
46SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_4mb_tte);
47SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_256mb_tte);
48SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_256mb_tte);
49SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_8k_tte);
50SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_8k_tte);
51SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_64k_tte);
52SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_64k_tte);
53SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_4mb_tte);
54SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_4mb_tte);
55SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_256mb_tte);
56SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_256mb_tte);
57
58static struct attribute *mmu_stat_attrs[] = {
59 &attr_immu_tsb_hits_ctx0_8k_tte.attr,
60 &attr_immu_tsb_ticks_ctx0_8k_tte.attr,
61 &attr_immu_tsb_hits_ctx0_64k_tte.attr,
62 &attr_immu_tsb_ticks_ctx0_64k_tte.attr,
63 &attr_immu_tsb_hits_ctx0_4mb_tte.attr,
64 &attr_immu_tsb_ticks_ctx0_4mb_tte.attr,
65 &attr_immu_tsb_hits_ctx0_256mb_tte.attr,
66 &attr_immu_tsb_ticks_ctx0_256mb_tte.attr,
67 &attr_immu_tsb_hits_ctxnon0_8k_tte.attr,
68 &attr_immu_tsb_ticks_ctxnon0_8k_tte.attr,
69 &attr_immu_tsb_hits_ctxnon0_64k_tte.attr,
70 &attr_immu_tsb_ticks_ctxnon0_64k_tte.attr,
71 &attr_immu_tsb_hits_ctxnon0_4mb_tte.attr,
72 &attr_immu_tsb_ticks_ctxnon0_4mb_tte.attr,
73 &attr_immu_tsb_hits_ctxnon0_256mb_tte.attr,
74 &attr_immu_tsb_ticks_ctxnon0_256mb_tte.attr,
75 &attr_dmmu_tsb_hits_ctx0_8k_tte.attr,
76 &attr_dmmu_tsb_ticks_ctx0_8k_tte.attr,
77 &attr_dmmu_tsb_hits_ctx0_64k_tte.attr,
78 &attr_dmmu_tsb_ticks_ctx0_64k_tte.attr,
79 &attr_dmmu_tsb_hits_ctx0_4mb_tte.attr,
80 &attr_dmmu_tsb_ticks_ctx0_4mb_tte.attr,
81 &attr_dmmu_tsb_hits_ctx0_256mb_tte.attr,
82 &attr_dmmu_tsb_ticks_ctx0_256mb_tte.attr,
83 &attr_dmmu_tsb_hits_ctxnon0_8k_tte.attr,
84 &attr_dmmu_tsb_ticks_ctxnon0_8k_tte.attr,
85 &attr_dmmu_tsb_hits_ctxnon0_64k_tte.attr,
86 &attr_dmmu_tsb_ticks_ctxnon0_64k_tte.attr,
87 &attr_dmmu_tsb_hits_ctxnon0_4mb_tte.attr,
88 &attr_dmmu_tsb_ticks_ctxnon0_4mb_tte.attr,
89 &attr_dmmu_tsb_hits_ctxnon0_256mb_tte.attr,
90 &attr_dmmu_tsb_ticks_ctxnon0_256mb_tte.attr,
91 NULL,
92};
93
94static struct attribute_group mmu_stat_group = {
95 .attrs = mmu_stat_attrs,
96 .name = "mmu_stats",
97};
98
99/* XXX convert to rusty's on_one_cpu */
100static unsigned long run_on_cpu(unsigned long cpu,
101 unsigned long (*func)(unsigned long),
102 unsigned long arg)
103{
104 cpumask_t old_affinity = current->cpus_allowed;
105 unsigned long ret;
106
107 /* should return -EINVAL to userspace */
108 if (set_cpus_allowed(current, cpumask_of_cpu(cpu)))
109 return 0;
110
111 ret = func(arg);
112
113 set_cpus_allowed(current, old_affinity);
114
115 return ret;
116}
117
118static unsigned long read_mmustat_enable(unsigned long junk)
119{
120 unsigned long ra = 0;
121
122 sun4v_mmustat_info(&ra);
123
124 return ra != 0;
125}
126
127static unsigned long write_mmustat_enable(unsigned long val)
128{
129 unsigned long ra, orig_ra;
130
131 if (val)
132 ra = __pa(&per_cpu(mmu_stats, smp_processor_id()));
133 else
134 ra = 0UL;
135
136 return sun4v_mmustat_conf(ra, &orig_ra);
137}
138
139static ssize_t show_mmustat_enable(struct sys_device *s,
140 struct sysdev_attribute *attr, char *buf)
141{
142 unsigned long val = run_on_cpu(s->id, read_mmustat_enable, 0);
143 return sprintf(buf, "%lx\n", val);
144}
145
146static ssize_t store_mmustat_enable(struct sys_device *s,
147 struct sysdev_attribute *attr, const char *buf,
148 size_t count)
149{
150 unsigned long val, err;
151 int ret = sscanf(buf, "%ld", &val);
152
153 if (ret != 1)
154 return -EINVAL;
155
156 err = run_on_cpu(s->id, write_mmustat_enable, val);
157 if (err)
158 return -EIO;
159
160 return count;
161}
162
163static SYSDEV_ATTR(mmustat_enable, 0644, show_mmustat_enable, store_mmustat_enable);
164
165static int mmu_stats_supported;
166
167static int register_mmu_stats(struct sys_device *s)
168{
169 if (!mmu_stats_supported)
170 return 0;
171 sysdev_create_file(s, &attr_mmustat_enable);
172 return sysfs_create_group(&s->kobj, &mmu_stat_group);
173}
174
175#ifdef CONFIG_HOTPLUG_CPU
176static void unregister_mmu_stats(struct sys_device *s)
177{
178 if (!mmu_stats_supported)
179 return;
180 sysfs_remove_group(&s->kobj, &mmu_stat_group);
181 sysdev_remove_file(s, &attr_mmustat_enable);
182}
183#endif
184
185#define SHOW_CPUDATA_ULONG_NAME(NAME, MEMBER) \
186static ssize_t show_##NAME(struct sys_device *dev, \
187 struct sysdev_attribute *attr, char *buf) \
188{ \
189 cpuinfo_sparc *c = &cpu_data(dev->id); \
190 return sprintf(buf, "%lu\n", c->MEMBER); \
191}
192
193#define SHOW_CPUDATA_UINT_NAME(NAME, MEMBER) \
194static ssize_t show_##NAME(struct sys_device *dev, \
195 struct sysdev_attribute *attr, char *buf) \
196{ \
197 cpuinfo_sparc *c = &cpu_data(dev->id); \
198 return sprintf(buf, "%u\n", c->MEMBER); \
199}
200
201SHOW_CPUDATA_ULONG_NAME(clock_tick, clock_tick);
202SHOW_CPUDATA_UINT_NAME(l1_dcache_size, dcache_size);
203SHOW_CPUDATA_UINT_NAME(l1_dcache_line_size, dcache_line_size);
204SHOW_CPUDATA_UINT_NAME(l1_icache_size, icache_size);
205SHOW_CPUDATA_UINT_NAME(l1_icache_line_size, icache_line_size);
206SHOW_CPUDATA_UINT_NAME(l2_cache_size, ecache_size);
207SHOW_CPUDATA_UINT_NAME(l2_cache_line_size, ecache_line_size);
208
209static struct sysdev_attribute cpu_core_attrs[] = {
210 _SYSDEV_ATTR(clock_tick, 0444, show_clock_tick, NULL),
211 _SYSDEV_ATTR(l1_dcache_size, 0444, show_l1_dcache_size, NULL),
212 _SYSDEV_ATTR(l1_dcache_line_size, 0444, show_l1_dcache_line_size, NULL),
213 _SYSDEV_ATTR(l1_icache_size, 0444, show_l1_icache_size, NULL),
214 _SYSDEV_ATTR(l1_icache_line_size, 0444, show_l1_icache_line_size, NULL),
215 _SYSDEV_ATTR(l2_cache_size, 0444, show_l2_cache_size, NULL),
216 _SYSDEV_ATTR(l2_cache_line_size, 0444, show_l2_cache_line_size, NULL),
217};
218
219static DEFINE_PER_CPU(struct cpu, cpu_devices);
220
221static void register_cpu_online(unsigned int cpu)
222{
223 struct cpu *c = &per_cpu(cpu_devices, cpu);
224 struct sys_device *s = &c->sysdev;
225 int i;
226
227 for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
228 sysdev_create_file(s, &cpu_core_attrs[i]);
229
230 register_mmu_stats(s);
231}
232
233#ifdef CONFIG_HOTPLUG_CPU
234static void unregister_cpu_online(unsigned int cpu)
235{
236 struct cpu *c = &per_cpu(cpu_devices, cpu);
237 struct sys_device *s = &c->sysdev;
238 int i;
239
240 unregister_mmu_stats(s);
241 for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
242 sysdev_remove_file(s, &cpu_core_attrs[i]);
243}
244#endif
245
246static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,
247 unsigned long action, void *hcpu)
248{
249 unsigned int cpu = (unsigned int)(long)hcpu;
250
251 switch (action) {
252 case CPU_ONLINE:
253 case CPU_ONLINE_FROZEN:
254 register_cpu_online(cpu);
255 break;
256#ifdef CONFIG_HOTPLUG_CPU
257 case CPU_DEAD:
258 case CPU_DEAD_FROZEN:
259 unregister_cpu_online(cpu);
260 break;
261#endif
262 }
263 return NOTIFY_OK;
264}
265
266static struct notifier_block __cpuinitdata sysfs_cpu_nb = {
267 .notifier_call = sysfs_cpu_notify,
268};
269
270static void __init check_mmu_stats(void)
271{
272 unsigned long dummy1, err;
273
274 if (tlb_type != hypervisor)
275 return;
276
277 err = sun4v_mmustat_info(&dummy1);
278 if (!err)
279 mmu_stats_supported = 1;
280}
281
282static void register_nodes(void)
283{
284#ifdef CONFIG_NUMA
285 int i;
286
287 for (i = 0; i < MAX_NUMNODES; i++)
288 register_one_node(i);
289#endif
290}
291
292static int __init topology_init(void)
293{
294 int cpu;
295
296 register_nodes();
297
298 check_mmu_stats();
299
300 register_cpu_notifier(&sysfs_cpu_nb);
301
302 for_each_possible_cpu(cpu) {
303 struct cpu *c = &per_cpu(cpu_devices, cpu);
304
305 register_cpu(c, cpu);
306 if (cpu_online(cpu))
307 register_cpu_online(cpu);
308 }
309
310 return 0;
311}
312
313subsys_initcall(topology_init);
diff --git a/arch/sparc/kernel/systbls.h b/arch/sparc/kernel/systbls.h
new file mode 100644
index 000000000000..bc9f5dac4069
--- /dev/null
+++ b/arch/sparc/kernel/systbls.h
@@ -0,0 +1,51 @@
1#ifndef _SYSTBLS_H
2#define _SYSTBLS_H
3
4#include <linux/kernel.h>
5#include <linux/types.h>
6#include <linux/utsname.h>
7#include <asm/utrap.h>
8#include <asm/signal.h>
9
10extern asmlinkage unsigned long sys_getpagesize(void);
11extern asmlinkage unsigned long sparc_brk(unsigned long brk);
12extern asmlinkage long sparc_pipe(struct pt_regs *regs);
13extern asmlinkage long sys_ipc(unsigned int call, int first,
14 unsigned long second,
15 unsigned long third,
16 void __user *ptr, long fifth);
17extern asmlinkage long sparc64_newuname(struct new_utsname __user *name);
18extern asmlinkage long sparc64_personality(unsigned long personality);
19extern asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
20 unsigned long prot, unsigned long flags,
21 unsigned long fd, unsigned long off);
22extern asmlinkage long sys64_munmap(unsigned long addr, size_t len);
23extern asmlinkage unsigned long sys64_mremap(unsigned long addr,
24 unsigned long old_len,
25 unsigned long new_len,
26 unsigned long flags,
27 unsigned long new_addr);
28extern asmlinkage unsigned long c_sys_nis_syscall(struct pt_regs *regs);
29extern asmlinkage long sys_getdomainname(char __user *name, int len);
30extern asmlinkage long sys_utrap_install(utrap_entry_t type,
31 utrap_handler_t new_p,
32 utrap_handler_t new_d,
33 utrap_handler_t __user *old_p,
34 utrap_handler_t __user *old_d);
35extern asmlinkage long sparc_memory_ordering(unsigned long model,
36 struct pt_regs *regs);
37extern asmlinkage long sys_rt_sigaction(int sig,
38 const struct sigaction __user *act,
39 struct sigaction __user *oact,
40 void __user *restorer,
41 size_t sigsetsize);
42extern asmlinkage long sys_perfctr(int opcode, unsigned long arg0,
43 unsigned long arg1, unsigned long arg2);
44
45extern asmlinkage void sparc64_set_context(struct pt_regs *regs);
46extern asmlinkage void sparc64_get_context(struct pt_regs *regs);
47extern asmlinkage long sys_sigpause(unsigned int set);
48extern asmlinkage long sys_sigsuspend(old_sigset_t set);
49extern void do_rt_sigreturn(struct pt_regs *regs);
50
51#endif /* _SYSTBLS_H */
diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S
new file mode 100644
index 000000000000..9fc78cf354bd
--- /dev/null
+++ b/arch/sparc/kernel/systbls_64.S
@@ -0,0 +1,159 @@
1/* systbls.S: System call entry point tables for OS compatibility.
2 * The native Linux system call table lives here also.
3 *
4 * Copyright (C) 1995, 1996, 2007 David S. Miller (davem@davemloft.net)
5 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 *
7 * Based upon preliminary work which is:
8 *
9 * Copyright (C) 1995 Adrian M. Rodriguez (adrian@remus.rutgers.edu)
10 */
11
12
13 .text
14 .align 4
15
16#ifdef CONFIG_COMPAT
17 /* First, the 32-bit Linux native syscall table. */
18
19 .globl sys_call_table32
20sys_call_table32:
21/*0*/ .word sys_restart_syscall, sys32_exit, sys_fork, sys_read, sys_write
22/*5*/ .word sys32_open, sys_close, sys32_wait4, sys32_creat, sys_link
23/*10*/ .word sys_unlink, sunos_execv, sys_chdir, sys_chown16, sys32_mknod
24/*15*/ .word sys_chmod, sys_lchown16, sparc_brk, sys32_perfctr, sys32_lseek
25/*20*/ .word sys_getpid, sys_capget, sys_capset, sys_setuid16, sys_getuid16
26/*25*/ .word sys32_vmsplice, compat_sys_ptrace, sys_alarm, sys32_sigaltstack, sys_pause
27/*30*/ .word compat_sys_utime, sys_lchown, sys_fchown, sys32_access, sys32_nice
28 .word sys_chown, sys_sync, sys32_kill, compat_sys_newstat, sys32_sendfile
29/*40*/ .word compat_sys_newlstat, sys_dup, sys_pipe, compat_sys_times, sys_getuid
30 .word sys32_umount, sys_setgid16, sys_getgid16, sys32_signal, sys_geteuid16
31/*50*/ .word sys_getegid16, sys_acct, sys_nis_syscall, sys_getgid, compat_sys_ioctl
32 .word sys32_reboot, sys32_mmap2, sys_symlink, sys32_readlink, sys32_execve
33/*60*/ .word sys32_umask, sys_chroot, compat_sys_newfstat, compat_sys_fstat64, sys_getpagesize
34 .word sys32_msync, sys_vfork, sys32_pread64, sys32_pwrite64, sys_geteuid
35/*70*/ .word sys_getegid, sys_mmap, sys_setreuid, sys_munmap, sys_mprotect
36 .word sys_madvise, sys_vhangup, sys32_truncate64, sys_mincore, sys_getgroups16
37/*80*/ .word sys_setgroups16, sys_getpgrp, sys32_setgroups, sys32_setitimer, sys32_ftruncate64
38 .word sys32_swapon, sys32_getitimer, sys_setuid, sys32_sethostname, sys_setgid
39/*90*/ .word sys_dup2, sys_setfsuid, compat_sys_fcntl, sys32_select, sys_setfsgid
40 .word sys_fsync, sys32_setpriority, sys_nis_syscall, sys_nis_syscall, sys_nis_syscall
41/*100*/ .word sys32_getpriority, sys32_rt_sigreturn, sys32_rt_sigaction, sys32_rt_sigprocmask, sys32_rt_sigpending
42 .word compat_sys_rt_sigtimedwait, sys32_rt_sigqueueinfo, compat_sys_rt_sigsuspend, sys_setresuid, sys_getresuid
43/*110*/ .word sys_setresgid, sys_getresgid, sys_setregid, sys_nis_syscall, sys_nis_syscall
44 .word sys32_getgroups, compat_sys_gettimeofday, sys32_getrusage, sys_nis_syscall, sys_getcwd
45/*120*/ .word compat_sys_readv, compat_sys_writev, compat_sys_settimeofday, sys_fchown16, sys_fchmod
46 .word sys_nis_syscall, sys_setreuid16, sys_setregid16, sys_rename, sys_truncate
47/*130*/ .word sys_ftruncate, sys_flock, compat_sys_lstat64, sys_nis_syscall, sys_nis_syscall
48 .word sys_nis_syscall, sys32_mkdir, sys_rmdir, compat_sys_utimes, compat_sys_stat64
49/*140*/ .word sys32_sendfile64, sys_nis_syscall, sys32_futex, sys_gettid, compat_sys_getrlimit
50 .word compat_sys_setrlimit, sys_pivot_root, sys32_prctl, sys_pciconfig_read, sys_pciconfig_write
51/*150*/ .word sys_nis_syscall, sys_inotify_init, sys_inotify_add_watch, sys_poll, sys_getdents64
52 .word compat_sys_fcntl64, sys_inotify_rm_watch, compat_sys_statfs, compat_sys_fstatfs, sys_oldumount
53/*160*/ .word compat_sys_sched_setaffinity, compat_sys_sched_getaffinity, sys32_getdomainname, sys32_setdomainname, sys_nis_syscall
54 .word sys_quotactl, sys_set_tid_address, compat_sys_mount, sys_ustat, sys32_setxattr
55/*170*/ .word sys32_lsetxattr, sys32_fsetxattr, sys_getxattr, sys_lgetxattr, compat_sys_getdents
56 .word sys_setsid, sys_fchdir, sys32_fgetxattr, sys_listxattr, sys_llistxattr
57/*180*/ .word sys32_flistxattr, sys_removexattr, sys_lremovexattr, compat_sys_sigpending, sys_ni_syscall
58 .word sys32_setpgid, sys32_fremovexattr, sys32_tkill, sys32_exit_group, sparc64_newuname
59/*190*/ .word sys32_init_module, sparc64_personality, sys_remap_file_pages, sys32_epoll_create, sys32_epoll_ctl
60 .word sys32_epoll_wait, sys32_ioprio_set, sys_getppid, sys32_sigaction, sys_sgetmask
61/*200*/ .word sys32_ssetmask, sys_sigsuspend, compat_sys_newlstat, sys_uselib, compat_sys_old_readdir
62 .word sys32_readahead, sys32_socketcall, sys32_syslog, sys32_lookup_dcookie, sys32_fadvise64
63/*210*/ .word sys32_fadvise64_64, sys32_tgkill, sys32_waitpid, sys_swapoff, compat_sys_sysinfo
64 .word compat_sys_ipc, sys32_sigreturn, sys_clone, sys32_ioprio_get, compat_sys_adjtimex
65/*220*/ .word sys32_sigprocmask, sys_ni_syscall, sys32_delete_module, sys_ni_syscall, sys32_getpgid
66 .word sys32_bdflush, sys32_sysfs, sys_nis_syscall, sys_setfsuid16, sys_setfsgid16
67/*230*/ .word sys32_select, compat_sys_time, sys32_splice, compat_sys_stime, compat_sys_statfs64
68 .word compat_sys_fstatfs64, sys_llseek, sys_mlock, sys_munlock, sys32_mlockall
69/*240*/ .word sys_munlockall, sys32_sched_setparam, sys32_sched_getparam, sys32_sched_setscheduler, sys32_sched_getscheduler
70 .word sys_sched_yield, sys32_sched_get_priority_max, sys32_sched_get_priority_min, sys32_sched_rr_get_interval, compat_sys_nanosleep
71/*250*/ .word sys32_mremap, sys32_sysctl, sys32_getsid, sys_fdatasync, sys32_nfsservctl
72 .word sys32_sync_file_range, compat_sys_clock_settime, compat_sys_clock_gettime, compat_sys_clock_getres, sys32_clock_nanosleep
73/*260*/ .word compat_sys_sched_getaffinity, compat_sys_sched_setaffinity, sys32_timer_settime, compat_sys_timer_gettime, sys_timer_getoverrun
74 .word sys_timer_delete, compat_sys_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy
75/*270*/ .word sys32_io_submit, sys_io_cancel, compat_sys_io_getevents, sys32_mq_open, sys_mq_unlink
76 .word compat_sys_mq_timedsend, compat_sys_mq_timedreceive, compat_sys_mq_notify, compat_sys_mq_getsetattr, compat_sys_waitid
77/*280*/ .word sys32_tee, sys_add_key, sys_request_key, sys_keyctl, compat_sys_openat
78 .word sys_mkdirat, sys_mknodat, sys_fchownat, compat_sys_futimesat, compat_sys_fstatat64
79/*290*/ .word sys_unlinkat, sys_renameat, sys_linkat, sys_symlinkat, sys_readlinkat
80 .word sys_fchmodat, sys_faccessat, compat_sys_pselect6, compat_sys_ppoll, sys_unshare
81/*300*/ .word compat_sys_set_robust_list, compat_sys_get_robust_list, compat_sys_migrate_pages, compat_sys_mbind, compat_sys_get_mempolicy
82 .word compat_sys_set_mempolicy, compat_sys_kexec_load, compat_sys_move_pages, sys_getcpu, compat_sys_epoll_pwait
83/*310*/ .word compat_sys_utimensat, compat_sys_signalfd, sys_timerfd_create, sys_eventfd, compat_sys_fallocate
84 .word compat_sys_timerfd_settime, compat_sys_timerfd_gettime, compat_sys_signalfd4, sys_eventfd2, sys_epoll_create1
85/*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4
86
87#endif /* CONFIG_COMPAT */
88
89 /* Now the 64-bit native Linux syscall table. */
90
91 .align 4
92 .globl sys_call_table64, sys_call_table
93sys_call_table64:
94sys_call_table:
95/*0*/ .word sys_restart_syscall, sparc_exit, sys_fork, sys_read, sys_write
96/*5*/ .word sys_open, sys_close, sys_wait4, sys_creat, sys_link
97/*10*/ .word sys_unlink, sys_nis_syscall, sys_chdir, sys_chown, sys_mknod
98/*15*/ .word sys_chmod, sys_lchown, sparc_brk, sys_perfctr, sys_lseek
99/*20*/ .word sys_getpid, sys_capget, sys_capset, sys_setuid, sys_getuid
100/*25*/ .word sys_vmsplice, sys_ptrace, sys_alarm, sys_sigaltstack, sys_nis_syscall
101/*30*/ .word sys_utime, sys_nis_syscall, sys_nis_syscall, sys_access, sys_nice
102 .word sys_nis_syscall, sys_sync, sys_kill, sys_newstat, sys_sendfile64
103/*40*/ .word sys_newlstat, sys_dup, sys_pipe, sys_times, sys_nis_syscall
104 .word sys_umount, sys_setgid, sys_getgid, sys_signal, sys_geteuid
105/*50*/ .word sys_getegid, sys_acct, sys_memory_ordering, sys_nis_syscall, sys_ioctl
106 .word sys_reboot, sys_nis_syscall, sys_symlink, sys_readlink, sys_execve
107/*60*/ .word sys_umask, sys_chroot, sys_newfstat, sys_fstat64, sys_getpagesize
108 .word sys_msync, sys_vfork, sys_pread64, sys_pwrite64, sys_nis_syscall
109/*70*/ .word sys_nis_syscall, sys_mmap, sys_nis_syscall, sys64_munmap, sys_mprotect
110 .word sys_madvise, sys_vhangup, sys_nis_syscall, sys_mincore, sys_getgroups
111/*80*/ .word sys_setgroups, sys_getpgrp, sys_nis_syscall, sys_setitimer, sys_nis_syscall
112 .word sys_swapon, sys_getitimer, sys_nis_syscall, sys_sethostname, sys_nis_syscall
113/*90*/ .word sys_dup2, sys_nis_syscall, sys_fcntl, sys_select, sys_nis_syscall
114 .word sys_fsync, sys_setpriority, sys_socket, sys_connect, sys_accept
115/*100*/ .word sys_getpriority, sys_rt_sigreturn, sys_rt_sigaction, sys_rt_sigprocmask, sys_rt_sigpending
116 .word sys_rt_sigtimedwait, sys_rt_sigqueueinfo, sys_rt_sigsuspend, sys_setresuid, sys_getresuid
117/*110*/ .word sys_setresgid, sys_getresgid, sys_nis_syscall, sys_recvmsg, sys_sendmsg
118 .word sys_nis_syscall, sys_gettimeofday, sys_getrusage, sys_getsockopt, sys_getcwd
119/*120*/ .word sys_readv, sys_writev, sys_settimeofday, sys_fchown, sys_fchmod
120 .word sys_recvfrom, sys_setreuid, sys_setregid, sys_rename, sys_truncate
121/*130*/ .word sys_ftruncate, sys_flock, sys_lstat64, sys_sendto, sys_shutdown
122 .word sys_socketpair, sys_mkdir, sys_rmdir, sys_utimes, sys_stat64
123/*140*/ .word sys_sendfile64, sys_getpeername, sys_futex, sys_gettid, sys_getrlimit
124 .word sys_setrlimit, sys_pivot_root, sys_prctl, sys_pciconfig_read, sys_pciconfig_write
125/*150*/ .word sys_getsockname, sys_inotify_init, sys_inotify_add_watch, sys_poll, sys_getdents64
126 .word sys_nis_syscall, sys_inotify_rm_watch, sys_statfs, sys_fstatfs, sys_oldumount
127/*160*/ .word sys_sched_setaffinity, sys_sched_getaffinity, sys_getdomainname, sys_setdomainname, sys_utrap_install
128 .word sys_quotactl, sys_set_tid_address, sys_mount, sys_ustat, sys_setxattr
129/*170*/ .word sys_lsetxattr, sys_fsetxattr, sys_getxattr, sys_lgetxattr, sys_getdents
130 .word sys_setsid, sys_fchdir, sys_fgetxattr, sys_listxattr, sys_llistxattr
131/*180*/ .word sys_flistxattr, sys_removexattr, sys_lremovexattr, sys_nis_syscall, sys_ni_syscall
132 .word sys_setpgid, sys_fremovexattr, sys_tkill, sys_exit_group, sparc64_newuname
133/*190*/ .word sys_init_module, sparc64_personality, sys_remap_file_pages, sys_epoll_create, sys_epoll_ctl
134 .word sys_epoll_wait, sys_ioprio_set, sys_getppid, sys_nis_syscall, sys_sgetmask
135/*200*/ .word sys_ssetmask, sys_nis_syscall, sys_newlstat, sys_uselib, sys_nis_syscall
136 .word sys_readahead, sys_socketcall, sys_syslog, sys_lookup_dcookie, sys_fadvise64
137/*210*/ .word sys_fadvise64_64, sys_tgkill, sys_waitpid, sys_swapoff, sys_sysinfo
138 .word sys_ipc, sys_nis_syscall, sys_clone, sys_ioprio_get, sys_adjtimex
139/*220*/ .word sys_nis_syscall, sys_ni_syscall, sys_delete_module, sys_ni_syscall, sys_getpgid
140 .word sys_bdflush, sys_sysfs, sys_nis_syscall, sys_setfsuid, sys_setfsgid
141/*230*/ .word sys_select, sys_nis_syscall, sys_splice, sys_stime, sys_statfs64
142 .word sys_fstatfs64, sys_llseek, sys_mlock, sys_munlock, sys_mlockall
143/*240*/ .word sys_munlockall, sys_sched_setparam, sys_sched_getparam, sys_sched_setscheduler, sys_sched_getscheduler
144 .word sys_sched_yield, sys_sched_get_priority_max, sys_sched_get_priority_min, sys_sched_rr_get_interval, sys_nanosleep
145/*250*/ .word sys64_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nfsservctl
146 .word sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
147/*260*/ .word sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun
148 .word sys_timer_delete, sys_timer_create, sys_ni_syscall, sys_io_setup, sys_io_destroy
149/*270*/ .word sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
150 .word sys_mq_timedsend, sys_mq_timedreceive, sys_mq_notify, sys_mq_getsetattr, sys_waitid
151/*280*/ .word sys_tee, sys_add_key, sys_request_key, sys_keyctl, sys_openat
152 .word sys_mkdirat, sys_mknodat, sys_fchownat, sys_futimesat, sys_fstatat64
153/*290*/ .word sys_unlinkat, sys_renameat, sys_linkat, sys_symlinkat, sys_readlinkat
154 .word sys_fchmodat, sys_faccessat, sys_pselect6, sys_ppoll, sys_unshare
155/*300*/ .word sys_set_robust_list, sys_get_robust_list, sys_migrate_pages, sys_mbind, sys_get_mempolicy
156 .word sys_set_mempolicy, sys_kexec_load, sys_move_pages, sys_getcpu, sys_epoll_pwait
157/*310*/ .word sys_utimensat, sys_signalfd, sys_timerfd_create, sys_eventfd, sys_fallocate
158 .word sys_timerfd_settime, sys_timerfd_gettime, sys_signalfd4, sys_eventfd2, sys_epoll_create1
159/*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4
diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c
new file mode 100644
index 000000000000..141da3759091
--- /dev/null
+++ b/arch/sparc/kernel/time_64.c
@@ -0,0 +1,862 @@
1/* time.c: UltraSparc timer and TOD clock support.
2 *
3 * Copyright (C) 1997, 2008 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
5 *
6 * Based largely on code which is:
7 *
8 * Copyright (C) 1996 Thomas K. Dyas (tdyas@eden.rutgers.edu)
9 */
10
11#include <linux/errno.h>
12#include <linux/module.h>
13#include <linux/sched.h>
14#include <linux/smp_lock.h>
15#include <linux/kernel.h>
16#include <linux/param.h>
17#include <linux/string.h>
18#include <linux/mm.h>
19#include <linux/interrupt.h>
20#include <linux/time.h>
21#include <linux/timex.h>
22#include <linux/init.h>
23#include <linux/ioport.h>
24#include <linux/mc146818rtc.h>
25#include <linux/delay.h>
26#include <linux/profile.h>
27#include <linux/bcd.h>
28#include <linux/jiffies.h>
29#include <linux/cpufreq.h>
30#include <linux/percpu.h>
31#include <linux/miscdevice.h>
32#include <linux/rtc.h>
33#include <linux/rtc/m48t59.h>
34#include <linux/kernel_stat.h>
35#include <linux/clockchips.h>
36#include <linux/clocksource.h>
37#include <linux/of_device.h>
38#include <linux/platform_device.h>
39
40#include <asm/oplib.h>
41#include <asm/timer.h>
42#include <asm/irq.h>
43#include <asm/io.h>
44#include <asm/prom.h>
45#include <asm/starfire.h>
46#include <asm/smp.h>
47#include <asm/sections.h>
48#include <asm/cpudata.h>
49#include <asm/uaccess.h>
50#include <asm/irq_regs.h>
51
52#include "entry.h"
53
54DEFINE_SPINLOCK(rtc_lock);
55
56#define TICK_PRIV_BIT (1UL << 63)
57#define TICKCMP_IRQ_BIT (1UL << 63)
58
59#ifdef CONFIG_SMP
60unsigned long profile_pc(struct pt_regs *regs)
61{
62 unsigned long pc = instruction_pointer(regs);
63
64 if (in_lock_functions(pc))
65 return regs->u_regs[UREG_RETPC];
66 return pc;
67}
68EXPORT_SYMBOL(profile_pc);
69#endif
70
71static void tick_disable_protection(void)
72{
73 /* Set things up so user can access tick register for profiling
74 * purposes. Also workaround BB_ERRATA_1 by doing a dummy
75 * read back of %tick after writing it.
76 */
77 __asm__ __volatile__(
78 " ba,pt %%xcc, 1f\n"
79 " nop\n"
80 " .align 64\n"
81 "1: rd %%tick, %%g2\n"
82 " add %%g2, 6, %%g2\n"
83 " andn %%g2, %0, %%g2\n"
84 " wrpr %%g2, 0, %%tick\n"
85 " rdpr %%tick, %%g0"
86 : /* no outputs */
87 : "r" (TICK_PRIV_BIT)
88 : "g2");
89}
90
91static void tick_disable_irq(void)
92{
93 __asm__ __volatile__(
94 " ba,pt %%xcc, 1f\n"
95 " nop\n"
96 " .align 64\n"
97 "1: wr %0, 0x0, %%tick_cmpr\n"
98 " rd %%tick_cmpr, %%g0"
99 : /* no outputs */
100 : "r" (TICKCMP_IRQ_BIT));
101}
102
103static void tick_init_tick(void)
104{
105 tick_disable_protection();
106 tick_disable_irq();
107}
108
109static unsigned long tick_get_tick(void)
110{
111 unsigned long ret;
112
113 __asm__ __volatile__("rd %%tick, %0\n\t"
114 "mov %0, %0"
115 : "=r" (ret));
116
117 return ret & ~TICK_PRIV_BIT;
118}
119
120static int tick_add_compare(unsigned long adj)
121{
122 unsigned long orig_tick, new_tick, new_compare;
123
124 __asm__ __volatile__("rd %%tick, %0"
125 : "=r" (orig_tick));
126
127 orig_tick &= ~TICKCMP_IRQ_BIT;
128
129 /* Workaround for Spitfire Errata (#54 I think??), I discovered
130 * this via Sun BugID 4008234, mentioned in Solaris-2.5.1 patch
131 * number 103640.
132 *
133 * On Blackbird writes to %tick_cmpr can fail, the
134 * workaround seems to be to execute the wr instruction
135 * at the start of an I-cache line, and perform a dummy
136 * read back from %tick_cmpr right after writing to it. -DaveM
137 */
138 __asm__ __volatile__("ba,pt %%xcc, 1f\n\t"
139 " add %1, %2, %0\n\t"
140 ".align 64\n"
141 "1:\n\t"
142 "wr %0, 0, %%tick_cmpr\n\t"
143 "rd %%tick_cmpr, %%g0\n\t"
144 : "=r" (new_compare)
145 : "r" (orig_tick), "r" (adj));
146
147 __asm__ __volatile__("rd %%tick, %0"
148 : "=r" (new_tick));
149 new_tick &= ~TICKCMP_IRQ_BIT;
150
151 return ((long)(new_tick - (orig_tick+adj))) > 0L;
152}
153
154static unsigned long tick_add_tick(unsigned long adj)
155{
156 unsigned long new_tick;
157
158 /* Also need to handle Blackbird bug here too. */
159 __asm__ __volatile__("rd %%tick, %0\n\t"
160 "add %0, %1, %0\n\t"
161 "wrpr %0, 0, %%tick\n\t"
162 : "=&r" (new_tick)
163 : "r" (adj));
164
165 return new_tick;
166}
167
168static struct sparc64_tick_ops tick_operations __read_mostly = {
169 .name = "tick",
170 .init_tick = tick_init_tick,
171 .disable_irq = tick_disable_irq,
172 .get_tick = tick_get_tick,
173 .add_tick = tick_add_tick,
174 .add_compare = tick_add_compare,
175 .softint_mask = 1UL << 0,
176};
177
178struct sparc64_tick_ops *tick_ops __read_mostly = &tick_operations;
179
180static void stick_disable_irq(void)
181{
182 __asm__ __volatile__(
183 "wr %0, 0x0, %%asr25"
184 : /* no outputs */
185 : "r" (TICKCMP_IRQ_BIT));
186}
187
188static void stick_init_tick(void)
189{
190 /* Writes to the %tick and %stick register are not
191 * allowed on sun4v. The Hypervisor controls that
192 * bit, per-strand.
193 */
194 if (tlb_type != hypervisor) {
195 tick_disable_protection();
196 tick_disable_irq();
197
198 /* Let the user get at STICK too. */
199 __asm__ __volatile__(
200 " rd %%asr24, %%g2\n"
201 " andn %%g2, %0, %%g2\n"
202 " wr %%g2, 0, %%asr24"
203 : /* no outputs */
204 : "r" (TICK_PRIV_BIT)
205 : "g1", "g2");
206 }
207
208 stick_disable_irq();
209}
210
211static unsigned long stick_get_tick(void)
212{
213 unsigned long ret;
214
215 __asm__ __volatile__("rd %%asr24, %0"
216 : "=r" (ret));
217
218 return ret & ~TICK_PRIV_BIT;
219}
220
221static unsigned long stick_add_tick(unsigned long adj)
222{
223 unsigned long new_tick;
224
225 __asm__ __volatile__("rd %%asr24, %0\n\t"
226 "add %0, %1, %0\n\t"
227 "wr %0, 0, %%asr24\n\t"
228 : "=&r" (new_tick)
229 : "r" (adj));
230
231 return new_tick;
232}
233
234static int stick_add_compare(unsigned long adj)
235{
236 unsigned long orig_tick, new_tick;
237
238 __asm__ __volatile__("rd %%asr24, %0"
239 : "=r" (orig_tick));
240 orig_tick &= ~TICKCMP_IRQ_BIT;
241
242 __asm__ __volatile__("wr %0, 0, %%asr25"
243 : /* no outputs */
244 : "r" (orig_tick + adj));
245
246 __asm__ __volatile__("rd %%asr24, %0"
247 : "=r" (new_tick));
248 new_tick &= ~TICKCMP_IRQ_BIT;
249
250 return ((long)(new_tick - (orig_tick+adj))) > 0L;
251}
252
253static struct sparc64_tick_ops stick_operations __read_mostly = {
254 .name = "stick",
255 .init_tick = stick_init_tick,
256 .disable_irq = stick_disable_irq,
257 .get_tick = stick_get_tick,
258 .add_tick = stick_add_tick,
259 .add_compare = stick_add_compare,
260 .softint_mask = 1UL << 16,
261};
262
263/* On Hummingbird the STICK/STICK_CMPR register is implemented
264 * in I/O space. There are two 64-bit registers each, the
265 * first holds the low 32-bits of the value and the second holds
266 * the high 32-bits.
267 *
268 * Since STICK is constantly updating, we have to access it carefully.
269 *
270 * The sequence we use to read is:
271 * 1) read high
272 * 2) read low
273 * 3) read high again, if it rolled re-read both low and high again.
274 *
275 * Writing STICK safely is also tricky:
276 * 1) write low to zero
277 * 2) write high
278 * 3) write low
279 */
280#define HBIRD_STICKCMP_ADDR 0x1fe0000f060UL
281#define HBIRD_STICK_ADDR 0x1fe0000f070UL
282
283static unsigned long __hbird_read_stick(void)
284{
285 unsigned long ret, tmp1, tmp2, tmp3;
286 unsigned long addr = HBIRD_STICK_ADDR+8;
287
288 __asm__ __volatile__("ldxa [%1] %5, %2\n"
289 "1:\n\t"
290 "sub %1, 0x8, %1\n\t"
291 "ldxa [%1] %5, %3\n\t"
292 "add %1, 0x8, %1\n\t"
293 "ldxa [%1] %5, %4\n\t"
294 "cmp %4, %2\n\t"
295 "bne,a,pn %%xcc, 1b\n\t"
296 " mov %4, %2\n\t"
297 "sllx %4, 32, %4\n\t"
298 "or %3, %4, %0\n\t"
299 : "=&r" (ret), "=&r" (addr),
300 "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3)
301 : "i" (ASI_PHYS_BYPASS_EC_E), "1" (addr));
302
303 return ret;
304}
305
306static void __hbird_write_stick(unsigned long val)
307{
308 unsigned long low = (val & 0xffffffffUL);
309 unsigned long high = (val >> 32UL);
310 unsigned long addr = HBIRD_STICK_ADDR;
311
312 __asm__ __volatile__("stxa %%g0, [%0] %4\n\t"
313 "add %0, 0x8, %0\n\t"
314 "stxa %3, [%0] %4\n\t"
315 "sub %0, 0x8, %0\n\t"
316 "stxa %2, [%0] %4"
317 : "=&r" (addr)
318 : "0" (addr), "r" (low), "r" (high),
319 "i" (ASI_PHYS_BYPASS_EC_E));
320}
321
322static void __hbird_write_compare(unsigned long val)
323{
324 unsigned long low = (val & 0xffffffffUL);
325 unsigned long high = (val >> 32UL);
326 unsigned long addr = HBIRD_STICKCMP_ADDR + 0x8UL;
327
328 __asm__ __volatile__("stxa %3, [%0] %4\n\t"
329 "sub %0, 0x8, %0\n\t"
330 "stxa %2, [%0] %4"
331 : "=&r" (addr)
332 : "0" (addr), "r" (low), "r" (high),
333 "i" (ASI_PHYS_BYPASS_EC_E));
334}
335
336static void hbtick_disable_irq(void)
337{
338 __hbird_write_compare(TICKCMP_IRQ_BIT);
339}
340
341static void hbtick_init_tick(void)
342{
343 tick_disable_protection();
344
345 /* XXX This seems to be necessary to 'jumpstart' Hummingbird
346 * XXX into actually sending STICK interrupts. I think because
347 * XXX of how we store %tick_cmpr in head.S this somehow resets the
348 * XXX {TICK + STICK} interrupt mux. -DaveM
349 */
350 __hbird_write_stick(__hbird_read_stick());
351
352 hbtick_disable_irq();
353}
354
355static unsigned long hbtick_get_tick(void)
356{
357 return __hbird_read_stick() & ~TICK_PRIV_BIT;
358}
359
360static unsigned long hbtick_add_tick(unsigned long adj)
361{
362 unsigned long val;
363
364 val = __hbird_read_stick() + adj;
365 __hbird_write_stick(val);
366
367 return val;
368}
369
370static int hbtick_add_compare(unsigned long adj)
371{
372 unsigned long val = __hbird_read_stick();
373 unsigned long val2;
374
375 val &= ~TICKCMP_IRQ_BIT;
376 val += adj;
377 __hbird_write_compare(val);
378
379 val2 = __hbird_read_stick() & ~TICKCMP_IRQ_BIT;
380
381 return ((long)(val2 - val)) > 0L;
382}
383
384static struct sparc64_tick_ops hbtick_operations __read_mostly = {
385 .name = "hbtick",
386 .init_tick = hbtick_init_tick,
387 .disable_irq = hbtick_disable_irq,
388 .get_tick = hbtick_get_tick,
389 .add_tick = hbtick_add_tick,
390 .add_compare = hbtick_add_compare,
391 .softint_mask = 1UL << 0,
392};
393
394static unsigned long timer_ticks_per_nsec_quotient __read_mostly;
395
396int update_persistent_clock(struct timespec now)
397{
398 struct rtc_device *rtc = rtc_class_open("rtc0");
399 int err = -1;
400
401 if (rtc) {
402 err = rtc_set_mmss(rtc, now.tv_sec);
403 rtc_class_close(rtc);
404 }
405
406 return err;
407}
408
409unsigned long cmos_regs;
410EXPORT_SYMBOL(cmos_regs);
411
412static struct resource rtc_cmos_resource;
413
414static struct platform_device rtc_cmos_device = {
415 .name = "rtc_cmos",
416 .id = -1,
417 .resource = &rtc_cmos_resource,
418 .num_resources = 1,
419};
420
421static int __devinit rtc_probe(struct of_device *op, const struct of_device_id *match)
422{
423 struct resource *r;
424
425 printk(KERN_INFO "%s: RTC regs at 0x%lx\n",
426 op->node->full_name, op->resource[0].start);
427
428 /* The CMOS RTC driver only accepts IORESOURCE_IO, so cons
429 * up a fake resource so that the probe works for all cases.
430 * When the RTC is behind an ISA bus it will have IORESOURCE_IO
431 * already, whereas when it's behind EBUS is will be IORESOURCE_MEM.
432 */
433
434 r = &rtc_cmos_resource;
435 r->flags = IORESOURCE_IO;
436 r->name = op->resource[0].name;
437 r->start = op->resource[0].start;
438 r->end = op->resource[0].end;
439
440 cmos_regs = op->resource[0].start;
441 return platform_device_register(&rtc_cmos_device);
442}
443
444static struct of_device_id __initdata rtc_match[] = {
445 {
446 .name = "rtc",
447 .compatible = "m5819",
448 },
449 {
450 .name = "rtc",
451 .compatible = "isa-m5819p",
452 },
453 {
454 .name = "rtc",
455 .compatible = "isa-m5823p",
456 },
457 {
458 .name = "rtc",
459 .compatible = "ds1287",
460 },
461 {},
462};
463
464static struct of_platform_driver rtc_driver = {
465 .match_table = rtc_match,
466 .probe = rtc_probe,
467 .driver = {
468 .name = "rtc",
469 },
470};
471
472static struct platform_device rtc_bq4802_device = {
473 .name = "rtc-bq4802",
474 .id = -1,
475 .num_resources = 1,
476};
477
478static int __devinit bq4802_probe(struct of_device *op, const struct of_device_id *match)
479{
480
481 printk(KERN_INFO "%s: BQ4802 regs at 0x%lx\n",
482 op->node->full_name, op->resource[0].start);
483
484 rtc_bq4802_device.resource = &op->resource[0];
485 return platform_device_register(&rtc_bq4802_device);
486}
487
488static struct of_device_id __initdata bq4802_match[] = {
489 {
490 .name = "rtc",
491 .compatible = "bq4802",
492 },
493 {},
494};
495
496static struct of_platform_driver bq4802_driver = {
497 .match_table = bq4802_match,
498 .probe = bq4802_probe,
499 .driver = {
500 .name = "bq4802",
501 },
502};
503
504static unsigned char mostek_read_byte(struct device *dev, u32 ofs)
505{
506 struct platform_device *pdev = to_platform_device(dev);
507 void __iomem *regs = (void __iomem *) pdev->resource[0].start;
508
509 return readb(regs + ofs);
510}
511
512static void mostek_write_byte(struct device *dev, u32 ofs, u8 val)
513{
514 struct platform_device *pdev = to_platform_device(dev);
515 void __iomem *regs = (void __iomem *) pdev->resource[0].start;
516
517 writeb(val, regs + ofs);
518}
519
520static struct m48t59_plat_data m48t59_data = {
521 .read_byte = mostek_read_byte,
522 .write_byte = mostek_write_byte,
523};
524
525static struct platform_device m48t59_rtc = {
526 .name = "rtc-m48t59",
527 .id = 0,
528 .num_resources = 1,
529 .dev = {
530 .platform_data = &m48t59_data,
531 },
532};
533
534static int __devinit mostek_probe(struct of_device *op, const struct of_device_id *match)
535{
536 struct device_node *dp = op->node;
537
538 /* On an Enterprise system there can be multiple mostek clocks.
539 * We should only match the one that is on the central FHC bus.
540 */
541 if (!strcmp(dp->parent->name, "fhc") &&
542 strcmp(dp->parent->parent->name, "central") != 0)
543 return -ENODEV;
544
545 printk(KERN_INFO "%s: Mostek regs at 0x%lx\n",
546 dp->full_name, op->resource[0].start);
547
548 m48t59_rtc.resource = &op->resource[0];
549 return platform_device_register(&m48t59_rtc);
550}
551
552static struct of_device_id __initdata mostek_match[] = {
553 {
554 .name = "eeprom",
555 },
556 {},
557};
558
559static struct of_platform_driver mostek_driver = {
560 .match_table = mostek_match,
561 .probe = mostek_probe,
562 .driver = {
563 .name = "mostek",
564 },
565};
566
567static struct platform_device rtc_sun4v_device = {
568 .name = "rtc-sun4v",
569 .id = -1,
570};
571
572static struct platform_device rtc_starfire_device = {
573 .name = "rtc-starfire",
574 .id = -1,
575};
576
577static int __init clock_init(void)
578{
579 if (this_is_starfire)
580 return platform_device_register(&rtc_starfire_device);
581
582 if (tlb_type == hypervisor)
583 return platform_device_register(&rtc_sun4v_device);
584
585 (void) of_register_driver(&rtc_driver, &of_platform_bus_type);
586 (void) of_register_driver(&mostek_driver, &of_platform_bus_type);
587 (void) of_register_driver(&bq4802_driver, &of_platform_bus_type);
588
589 return 0;
590}
591
592/* Must be after subsys_initcall() so that busses are probed. Must
593 * be before device_initcall() because things like the RTC driver
594 * need to see the clock registers.
595 */
596fs_initcall(clock_init);
597
598/* This is gets the master TICK_INT timer going. */
599static unsigned long sparc64_init_timers(void)
600{
601 struct device_node *dp;
602 unsigned long freq;
603
604 dp = of_find_node_by_path("/");
605 if (tlb_type == spitfire) {
606 unsigned long ver, manuf, impl;
607
608 __asm__ __volatile__ ("rdpr %%ver, %0"
609 : "=&r" (ver));
610 manuf = ((ver >> 48) & 0xffff);
611 impl = ((ver >> 32) & 0xffff);
612 if (manuf == 0x17 && impl == 0x13) {
613 /* Hummingbird, aka Ultra-IIe */
614 tick_ops = &hbtick_operations;
615 freq = of_getintprop_default(dp, "stick-frequency", 0);
616 } else {
617 tick_ops = &tick_operations;
618 freq = local_cpu_data().clock_tick;
619 }
620 } else {
621 tick_ops = &stick_operations;
622 freq = of_getintprop_default(dp, "stick-frequency", 0);
623 }
624
625 return freq;
626}
627
628struct freq_table {
629 unsigned long clock_tick_ref;
630 unsigned int ref_freq;
631};
632static DEFINE_PER_CPU(struct freq_table, sparc64_freq_table) = { 0, 0 };
633
634unsigned long sparc64_get_clock_tick(unsigned int cpu)
635{
636 struct freq_table *ft = &per_cpu(sparc64_freq_table, cpu);
637
638 if (ft->clock_tick_ref)
639 return ft->clock_tick_ref;
640 return cpu_data(cpu).clock_tick;
641}
642
643#ifdef CONFIG_CPU_FREQ
644
645static int sparc64_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
646 void *data)
647{
648 struct cpufreq_freqs *freq = data;
649 unsigned int cpu = freq->cpu;
650 struct freq_table *ft = &per_cpu(sparc64_freq_table, cpu);
651
652 if (!ft->ref_freq) {
653 ft->ref_freq = freq->old;
654 ft->clock_tick_ref = cpu_data(cpu).clock_tick;
655 }
656 if ((val == CPUFREQ_PRECHANGE && freq->old < freq->new) ||
657 (val == CPUFREQ_POSTCHANGE && freq->old > freq->new) ||
658 (val == CPUFREQ_RESUMECHANGE)) {
659 cpu_data(cpu).clock_tick =
660 cpufreq_scale(ft->clock_tick_ref,
661 ft->ref_freq,
662 freq->new);
663 }
664
665 return 0;
666}
667
668static struct notifier_block sparc64_cpufreq_notifier_block = {
669 .notifier_call = sparc64_cpufreq_notifier
670};
671
672static int __init register_sparc64_cpufreq_notifier(void)
673{
674
675 cpufreq_register_notifier(&sparc64_cpufreq_notifier_block,
676 CPUFREQ_TRANSITION_NOTIFIER);
677 return 0;
678}
679
680core_initcall(register_sparc64_cpufreq_notifier);
681
682#endif /* CONFIG_CPU_FREQ */
683
684static int sparc64_next_event(unsigned long delta,
685 struct clock_event_device *evt)
686{
687 return tick_ops->add_compare(delta) ? -ETIME : 0;
688}
689
690static void sparc64_timer_setup(enum clock_event_mode mode,
691 struct clock_event_device *evt)
692{
693 switch (mode) {
694 case CLOCK_EVT_MODE_ONESHOT:
695 case CLOCK_EVT_MODE_RESUME:
696 break;
697
698 case CLOCK_EVT_MODE_SHUTDOWN:
699 tick_ops->disable_irq();
700 break;
701
702 case CLOCK_EVT_MODE_PERIODIC:
703 case CLOCK_EVT_MODE_UNUSED:
704 WARN_ON(1);
705 break;
706 };
707}
708
709static struct clock_event_device sparc64_clockevent = {
710 .features = CLOCK_EVT_FEAT_ONESHOT,
711 .set_mode = sparc64_timer_setup,
712 .set_next_event = sparc64_next_event,
713 .rating = 100,
714 .shift = 30,
715 .irq = -1,
716};
717static DEFINE_PER_CPU(struct clock_event_device, sparc64_events);
718
719void timer_interrupt(int irq, struct pt_regs *regs)
720{
721 struct pt_regs *old_regs = set_irq_regs(regs);
722 unsigned long tick_mask = tick_ops->softint_mask;
723 int cpu = smp_processor_id();
724 struct clock_event_device *evt = &per_cpu(sparc64_events, cpu);
725
726 clear_softint(tick_mask);
727
728 irq_enter();
729
730 kstat_this_cpu.irqs[0]++;
731
732 if (unlikely(!evt->event_handler)) {
733 printk(KERN_WARNING
734 "Spurious SPARC64 timer interrupt on cpu %d\n", cpu);
735 } else
736 evt->event_handler(evt);
737
738 irq_exit();
739
740 set_irq_regs(old_regs);
741}
742
743void __devinit setup_sparc64_timer(void)
744{
745 struct clock_event_device *sevt;
746 unsigned long pstate;
747
748 /* Guarantee that the following sequences execute
749 * uninterrupted.
750 */
751 __asm__ __volatile__("rdpr %%pstate, %0\n\t"
752 "wrpr %0, %1, %%pstate"
753 : "=r" (pstate)
754 : "i" (PSTATE_IE));
755
756 tick_ops->init_tick();
757
758 /* Restore PSTATE_IE. */
759 __asm__ __volatile__("wrpr %0, 0x0, %%pstate"
760 : /* no outputs */
761 : "r" (pstate));
762
763 sevt = &__get_cpu_var(sparc64_events);
764
765 memcpy(sevt, &sparc64_clockevent, sizeof(*sevt));
766 sevt->cpumask = cpumask_of_cpu(smp_processor_id());
767
768 clockevents_register_device(sevt);
769}
770
771#define SPARC64_NSEC_PER_CYC_SHIFT 10UL
772
773static struct clocksource clocksource_tick = {
774 .rating = 100,
775 .mask = CLOCKSOURCE_MASK(64),
776 .shift = 16,
777 .flags = CLOCK_SOURCE_IS_CONTINUOUS,
778};
779
780static void __init setup_clockevent_multiplier(unsigned long hz)
781{
782 unsigned long mult, shift = 32;
783
784 while (1) {
785 mult = div_sc(hz, NSEC_PER_SEC, shift);
786 if (mult && (mult >> 32UL) == 0UL)
787 break;
788
789 shift--;
790 }
791
792 sparc64_clockevent.shift = shift;
793 sparc64_clockevent.mult = mult;
794}
795
796static unsigned long tb_ticks_per_usec __read_mostly;
797
798void __delay(unsigned long loops)
799{
800 unsigned long bclock, now;
801
802 bclock = tick_ops->get_tick();
803 do {
804 now = tick_ops->get_tick();
805 } while ((now-bclock) < loops);
806}
807EXPORT_SYMBOL(__delay);
808
809void udelay(unsigned long usecs)
810{
811 __delay(tb_ticks_per_usec * usecs);
812}
813EXPORT_SYMBOL(udelay);
814
815void __init time_init(void)
816{
817 unsigned long freq = sparc64_init_timers();
818
819 tb_ticks_per_usec = freq / USEC_PER_SEC;
820
821 timer_ticks_per_nsec_quotient =
822 clocksource_hz2mult(freq, SPARC64_NSEC_PER_CYC_SHIFT);
823
824 clocksource_tick.name = tick_ops->name;
825 clocksource_tick.mult =
826 clocksource_hz2mult(freq,
827 clocksource_tick.shift);
828 clocksource_tick.read = tick_ops->get_tick;
829
830 printk("clocksource: mult[%x] shift[%d]\n",
831 clocksource_tick.mult, clocksource_tick.shift);
832
833 clocksource_register(&clocksource_tick);
834
835 sparc64_clockevent.name = tick_ops->name;
836
837 setup_clockevent_multiplier(freq);
838
839 sparc64_clockevent.max_delta_ns =
840 clockevent_delta2ns(0x7fffffffffffffffUL, &sparc64_clockevent);
841 sparc64_clockevent.min_delta_ns =
842 clockevent_delta2ns(0xF, &sparc64_clockevent);
843
844 printk("clockevent: mult[%lx] shift[%d]\n",
845 sparc64_clockevent.mult, sparc64_clockevent.shift);
846
847 setup_sparc64_timer();
848}
849
850unsigned long long sched_clock(void)
851{
852 unsigned long ticks = tick_ops->get_tick();
853
854 return (ticks * timer_ticks_per_nsec_quotient)
855 >> SPARC64_NSEC_PER_CYC_SHIFT;
856}
857
858int __devinit read_current_timer(unsigned long *timer_val)
859{
860 *timer_val = tick_ops->get_tick();
861 return 0;
862}
diff --git a/arch/sparc/kernel/trampoline_64.S b/arch/sparc/kernel/trampoline_64.S
new file mode 100644
index 000000000000..da1b781b5e65
--- /dev/null
+++ b/arch/sparc/kernel/trampoline_64.S
@@ -0,0 +1,417 @@
1/*
2 * trampoline.S: Jump start slave processors on sparc64.
3 *
4 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
5 */
6
7#include <linux/init.h>
8
9#include <asm/head.h>
10#include <asm/asi.h>
11#include <asm/lsu.h>
12#include <asm/dcr.h>
13#include <asm/dcu.h>
14#include <asm/pstate.h>
15#include <asm/page.h>
16#include <asm/pgtable.h>
17#include <asm/spitfire.h>
18#include <asm/processor.h>
19#include <asm/thread_info.h>
20#include <asm/mmu.h>
21#include <asm/hypervisor.h>
22#include <asm/cpudata.h>
23
24 .data
25 .align 8
26call_method:
27 .asciz "call-method"
28 .align 8
29itlb_load:
30 .asciz "SUNW,itlb-load"
31 .align 8
32dtlb_load:
33 .asciz "SUNW,dtlb-load"
34
35 /* XXX __cpuinit this thing XXX */
36#define TRAMP_STACK_SIZE 1024
37 .align 16
38tramp_stack:
39 .skip TRAMP_STACK_SIZE
40
41 __CPUINIT
42 .align 8
43 .globl sparc64_cpu_startup, sparc64_cpu_startup_end
44sparc64_cpu_startup:
45 BRANCH_IF_SUN4V(g1, niagara_startup)
46 BRANCH_IF_CHEETAH_BASE(g1, g5, cheetah_startup)
47 BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1, g5, cheetah_plus_startup)
48
49 ba,pt %xcc, spitfire_startup
50 nop
51
52cheetah_plus_startup:
53 /* Preserve OBP chosen DCU and DCR register settings. */
54 ba,pt %xcc, cheetah_generic_startup
55 nop
56
57cheetah_startup:
58 mov DCR_BPE | DCR_RPE | DCR_SI | DCR_IFPOE | DCR_MS, %g1
59 wr %g1, %asr18
60
61 sethi %uhi(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g5
62 or %g5, %ulo(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g5
63 sllx %g5, 32, %g5
64 or %g5, DCU_DM | DCU_IM | DCU_DC | DCU_IC, %g5
65 stxa %g5, [%g0] ASI_DCU_CONTROL_REG
66 membar #Sync
67 /* fallthru */
68
69cheetah_generic_startup:
70 mov TSB_EXTENSION_P, %g3
71 stxa %g0, [%g3] ASI_DMMU
72 stxa %g0, [%g3] ASI_IMMU
73 membar #Sync
74
75 mov TSB_EXTENSION_S, %g3
76 stxa %g0, [%g3] ASI_DMMU
77 membar #Sync
78
79 mov TSB_EXTENSION_N, %g3
80 stxa %g0, [%g3] ASI_DMMU
81 stxa %g0, [%g3] ASI_IMMU
82 membar #Sync
83 /* fallthru */
84
85niagara_startup:
86 /* Disable STICK_INT interrupts. */
87 sethi %hi(0x80000000), %g5
88 sllx %g5, 32, %g5
89 wr %g5, %asr25
90
91 ba,pt %xcc, startup_continue
92 nop
93
94spitfire_startup:
95 mov (LSU_CONTROL_IC | LSU_CONTROL_DC | LSU_CONTROL_IM | LSU_CONTROL_DM), %g1
96 stxa %g1, [%g0] ASI_LSU_CONTROL
97 membar #Sync
98
99startup_continue:
100 mov %o0, %l0
101 BRANCH_IF_SUN4V(g1, niagara_lock_tlb)
102
103 sethi %hi(0x80000000), %g2
104 sllx %g2, 32, %g2
105 wr %g2, 0, %tick_cmpr
106
107 /* Call OBP by hand to lock KERNBASE into i/d tlbs.
108 * We lock 'num_kernel_image_mappings' consequetive entries.
109 */
110 sethi %hi(prom_entry_lock), %g2
1111: ldstub [%g2 + %lo(prom_entry_lock)], %g1
112 brnz,pn %g1, 1b
113 nop
114
115 sethi %hi(p1275buf), %g2
116 or %g2, %lo(p1275buf), %g2
117 ldx [%g2 + 0x10], %l2
118 add %l2, -(192 + 128), %sp
119 flushw
120
121 /* Setup the loop variables:
122 * %l3: VADDR base
123 * %l4: TTE base
124 * %l5: Loop iterator, iterates from 0 to 'num_kernel_image_mappings'
125 * %l6: Number of TTE entries to map
126 * %l7: Highest TTE entry number, we count down
127 */
128 sethi %hi(KERNBASE), %l3
129 sethi %hi(kern_locked_tte_data), %l4
130 ldx [%l4 + %lo(kern_locked_tte_data)], %l4
131 clr %l5
132 sethi %hi(num_kernel_image_mappings), %l6
133 lduw [%l6 + %lo(num_kernel_image_mappings)], %l6
134 add %l6, 1, %l6
135
136 mov 15, %l7
137 BRANCH_IF_ANY_CHEETAH(g1,g5,2f)
138
139 mov 63, %l7
1402:
141
1423:
143 /* Lock into I-MMU */
144 sethi %hi(call_method), %g2
145 or %g2, %lo(call_method), %g2
146 stx %g2, [%sp + 2047 + 128 + 0x00]
147 mov 5, %g2
148 stx %g2, [%sp + 2047 + 128 + 0x08]
149 mov 1, %g2
150 stx %g2, [%sp + 2047 + 128 + 0x10]
151 sethi %hi(itlb_load), %g2
152 or %g2, %lo(itlb_load), %g2
153 stx %g2, [%sp + 2047 + 128 + 0x18]
154 sethi %hi(prom_mmu_ihandle_cache), %g2
155 lduw [%g2 + %lo(prom_mmu_ihandle_cache)], %g2
156 stx %g2, [%sp + 2047 + 128 + 0x20]
157
158 /* Each TTE maps 4MB, convert index to offset. */
159 sllx %l5, 22, %g1
160
161 add %l3, %g1, %g2
162 stx %g2, [%sp + 2047 + 128 + 0x28] ! VADDR
163 add %l4, %g1, %g2
164 stx %g2, [%sp + 2047 + 128 + 0x30] ! TTE
165
166 /* TTE index is highest minus loop index. */
167 sub %l7, %l5, %g2
168 stx %g2, [%sp + 2047 + 128 + 0x38]
169
170 sethi %hi(p1275buf), %g2
171 or %g2, %lo(p1275buf), %g2
172 ldx [%g2 + 0x08], %o1
173 call %o1
174 add %sp, (2047 + 128), %o0
175
176 /* Lock into D-MMU */
177 sethi %hi(call_method), %g2
178 or %g2, %lo(call_method), %g2
179 stx %g2, [%sp + 2047 + 128 + 0x00]
180 mov 5, %g2
181 stx %g2, [%sp + 2047 + 128 + 0x08]
182 mov 1, %g2
183 stx %g2, [%sp + 2047 + 128 + 0x10]
184 sethi %hi(dtlb_load), %g2
185 or %g2, %lo(dtlb_load), %g2
186 stx %g2, [%sp + 2047 + 128 + 0x18]
187 sethi %hi(prom_mmu_ihandle_cache), %g2
188 lduw [%g2 + %lo(prom_mmu_ihandle_cache)], %g2
189 stx %g2, [%sp + 2047 + 128 + 0x20]
190
191 /* Each TTE maps 4MB, convert index to offset. */
192 sllx %l5, 22, %g1
193
194 add %l3, %g1, %g2
195 stx %g2, [%sp + 2047 + 128 + 0x28] ! VADDR
196 add %l4, %g1, %g2
197 stx %g2, [%sp + 2047 + 128 + 0x30] ! TTE
198
199 /* TTE index is highest minus loop index. */
200 sub %l7, %l5, %g2
201 stx %g2, [%sp + 2047 + 128 + 0x38]
202
203 sethi %hi(p1275buf), %g2
204 or %g2, %lo(p1275buf), %g2
205 ldx [%g2 + 0x08], %o1
206 call %o1
207 add %sp, (2047 + 128), %o0
208
209 add %l5, 1, %l5
210 cmp %l5, %l6
211 bne,pt %xcc, 3b
212 nop
213
214 sethi %hi(prom_entry_lock), %g2
215 stb %g0, [%g2 + %lo(prom_entry_lock)]
216
217 ba,pt %xcc, after_lock_tlb
218 nop
219
220niagara_lock_tlb:
221 sethi %hi(KERNBASE), %l3
222 sethi %hi(kern_locked_tte_data), %l4
223 ldx [%l4 + %lo(kern_locked_tte_data)], %l4
224 clr %l5
225 sethi %hi(num_kernel_image_mappings), %l6
226 lduw [%l6 + %lo(num_kernel_image_mappings)], %l6
227 add %l6, 1, %l6
228
2291:
230 mov HV_FAST_MMU_MAP_PERM_ADDR, %o5
231 sllx %l5, 22, %g2
232 add %l3, %g2, %o0
233 clr %o1
234 add %l4, %g2, %o2
235 mov HV_MMU_IMMU, %o3
236 ta HV_FAST_TRAP
237
238 mov HV_FAST_MMU_MAP_PERM_ADDR, %o5
239 sllx %l5, 22, %g2
240 add %l3, %g2, %o0
241 clr %o1
242 add %l4, %g2, %o2
243 mov HV_MMU_DMMU, %o3
244 ta HV_FAST_TRAP
245
246 add %l5, 1, %l5
247 cmp %l5, %l6
248 bne,pt %xcc, 1b
249 nop
250
251after_lock_tlb:
252 wrpr %g0, (PSTATE_PRIV | PSTATE_PEF), %pstate
253 wr %g0, 0, %fprs
254
255 wr %g0, ASI_P, %asi
256
257 mov PRIMARY_CONTEXT, %g7
258
259661: stxa %g0, [%g7] ASI_DMMU
260 .section .sun4v_1insn_patch, "ax"
261 .word 661b
262 stxa %g0, [%g7] ASI_MMU
263 .previous
264
265 membar #Sync
266 mov SECONDARY_CONTEXT, %g7
267
268661: stxa %g0, [%g7] ASI_DMMU
269 .section .sun4v_1insn_patch, "ax"
270 .word 661b
271 stxa %g0, [%g7] ASI_MMU
272 .previous
273
274 membar #Sync
275
276 /* Everything we do here, until we properly take over the
277 * trap table, must be done with extreme care. We cannot
278 * make any references to %g6 (current thread pointer),
279 * %g4 (current task pointer), or %g5 (base of current cpu's
280 * per-cpu area) until we properly take over the trap table
281 * from the firmware and hypervisor.
282 *
283 * Get onto temporary stack which is in the locked kernel image.
284 */
285 sethi %hi(tramp_stack), %g1
286 or %g1, %lo(tramp_stack), %g1
287 add %g1, TRAMP_STACK_SIZE, %g1
288 sub %g1, STACKFRAME_SZ + STACK_BIAS + 256, %sp
289 mov 0, %fp
290
291 /* Put garbage in these registers to trap any access to them. */
292 set 0xdeadbeef, %g4
293 set 0xdeadbeef, %g5
294 set 0xdeadbeef, %g6
295
296 call init_irqwork_curcpu
297 nop
298
299 sethi %hi(tlb_type), %g3
300 lduw [%g3 + %lo(tlb_type)], %g2
301 cmp %g2, 3
302 bne,pt %icc, 1f
303 nop
304
305 call hard_smp_processor_id
306 nop
307
308 call sun4v_register_mondo_queues
309 nop
310
3111: call init_cur_cpu_trap
312 ldx [%l0], %o0
313
314 /* Start using proper page size encodings in ctx register. */
315 sethi %hi(sparc64_kern_pri_context), %g3
316 ldx [%g3 + %lo(sparc64_kern_pri_context)], %g2
317 mov PRIMARY_CONTEXT, %g1
318
319661: stxa %g2, [%g1] ASI_DMMU
320 .section .sun4v_1insn_patch, "ax"
321 .word 661b
322 stxa %g2, [%g1] ASI_MMU
323 .previous
324
325 membar #Sync
326
327 wrpr %g0, 0, %wstate
328
329 sethi %hi(prom_entry_lock), %g2
3301: ldstub [%g2 + %lo(prom_entry_lock)], %g1
331 brnz,pn %g1, 1b
332 nop
333
334 /* As a hack, put &init_thread_union into %g6.
335 * prom_world() loads from here to restore the %asi
336 * register.
337 */
338 sethi %hi(init_thread_union), %g6
339 or %g6, %lo(init_thread_union), %g6
340
341 sethi %hi(is_sun4v), %o0
342 lduw [%o0 + %lo(is_sun4v)], %o0
343 brz,pt %o0, 2f
344 nop
345
346 TRAP_LOAD_TRAP_BLOCK(%g2, %g3)
347 add %g2, TRAP_PER_CPU_FAULT_INFO, %g2
348 stxa %g2, [%g0] ASI_SCRATCHPAD
349
350 /* Compute physical address:
351 *
352 * paddr = kern_base + (mmfsa_vaddr - KERNBASE)
353 */
354 sethi %hi(KERNBASE), %g3
355 sub %g2, %g3, %g2
356 sethi %hi(kern_base), %g3
357 ldx [%g3 + %lo(kern_base)], %g3
358 add %g2, %g3, %o1
359 sethi %hi(sparc64_ttable_tl0), %o0
360
361 set prom_set_trap_table_name, %g2
362 stx %g2, [%sp + 2047 + 128 + 0x00]
363 mov 2, %g2
364 stx %g2, [%sp + 2047 + 128 + 0x08]
365 mov 0, %g2
366 stx %g2, [%sp + 2047 + 128 + 0x10]
367 stx %o0, [%sp + 2047 + 128 + 0x18]
368 stx %o1, [%sp + 2047 + 128 + 0x20]
369 sethi %hi(p1275buf), %g2
370 or %g2, %lo(p1275buf), %g2
371 ldx [%g2 + 0x08], %o1
372 call %o1
373 add %sp, (2047 + 128), %o0
374
375 ba,pt %xcc, 3f
376 nop
377
3782: sethi %hi(sparc64_ttable_tl0), %o0
379 set prom_set_trap_table_name, %g2
380 stx %g2, [%sp + 2047 + 128 + 0x00]
381 mov 1, %g2
382 stx %g2, [%sp + 2047 + 128 + 0x08]
383 mov 0, %g2
384 stx %g2, [%sp + 2047 + 128 + 0x10]
385 stx %o0, [%sp + 2047 + 128 + 0x18]
386 sethi %hi(p1275buf), %g2
387 or %g2, %lo(p1275buf), %g2
388 ldx [%g2 + 0x08], %o1
389 call %o1
390 add %sp, (2047 + 128), %o0
391
3923: sethi %hi(prom_entry_lock), %g2
393 stb %g0, [%g2 + %lo(prom_entry_lock)]
394
395 ldx [%l0], %g6
396 ldx [%g6 + TI_TASK], %g4
397
398 mov 1, %g5
399 sllx %g5, THREAD_SHIFT, %g5
400 sub %g5, (STACKFRAME_SZ + STACK_BIAS), %g5
401 add %g6, %g5, %sp
402 mov 0, %fp
403
404 rdpr %pstate, %o1
405 or %o1, PSTATE_IE, %o1
406 wrpr %o1, 0, %pstate
407
408 call smp_callin
409 nop
410 call cpu_idle
411 mov 0, %o0
412 call cpu_panic
413 nop
4141: b,a,pt %xcc, 1b
415
416 .align 8
417sparc64_cpu_startup_end:
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
new file mode 100644
index 000000000000..4638af2f55a0
--- /dev/null
+++ b/arch/sparc/kernel/traps_64.c
@@ -0,0 +1,2600 @@
1/* arch/sparc64/kernel/traps.c
2 *
3 * Copyright (C) 1995,1997,2008 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1997,1999,2000 Jakub Jelinek (jakub@redhat.com)
5 */
6
7/*
8 * I like traps on v9, :))))
9 */
10
11#include <linux/module.h>
12#include <linux/sched.h>
13#include <linux/linkage.h>
14#include <linux/kernel.h>
15#include <linux/signal.h>
16#include <linux/smp.h>
17#include <linux/mm.h>
18#include <linux/init.h>
19#include <linux/kdebug.h>
20
21#include <asm/smp.h>
22#include <asm/delay.h>
23#include <asm/system.h>
24#include <asm/ptrace.h>
25#include <asm/oplib.h>
26#include <asm/page.h>
27#include <asm/pgtable.h>
28#include <asm/unistd.h>
29#include <asm/uaccess.h>
30#include <asm/fpumacro.h>
31#include <asm/lsu.h>
32#include <asm/dcu.h>
33#include <asm/estate.h>
34#include <asm/chafsr.h>
35#include <asm/sfafsr.h>
36#include <asm/psrcompat.h>
37#include <asm/processor.h>
38#include <asm/timer.h>
39#include <asm/head.h>
40#include <asm/prom.h>
41#include <asm/memctrl.h>
42
43#include "entry.h"
44#include "kstack.h"
45
46/* When an irrecoverable trap occurs at tl > 0, the trap entry
47 * code logs the trap state registers at every level in the trap
48 * stack. It is found at (pt_regs + sizeof(pt_regs)) and the layout
49 * is as follows:
50 */
51struct tl1_traplog {
52 struct {
53 unsigned long tstate;
54 unsigned long tpc;
55 unsigned long tnpc;
56 unsigned long tt;
57 } trapstack[4];
58 unsigned long tl;
59};
60
61static void dump_tl1_traplog(struct tl1_traplog *p)
62{
63 int i, limit;
64
65 printk(KERN_EMERG "TRAPLOG: Error at trap level 0x%lx, "
66 "dumping track stack.\n", p->tl);
67
68 limit = (tlb_type == hypervisor) ? 2 : 4;
69 for (i = 0; i < limit; i++) {
70 printk(KERN_EMERG
71 "TRAPLOG: Trap level %d TSTATE[%016lx] TPC[%016lx] "
72 "TNPC[%016lx] TT[%lx]\n",
73 i + 1,
74 p->trapstack[i].tstate, p->trapstack[i].tpc,
75 p->trapstack[i].tnpc, p->trapstack[i].tt);
76 printk("TRAPLOG: TPC<%pS>\n", (void *) p->trapstack[i].tpc);
77 }
78}
79
80void bad_trap(struct pt_regs *regs, long lvl)
81{
82 char buffer[32];
83 siginfo_t info;
84
85 if (notify_die(DIE_TRAP, "bad trap", regs,
86 0, lvl, SIGTRAP) == NOTIFY_STOP)
87 return;
88
89 if (lvl < 0x100) {
90 sprintf(buffer, "Bad hw trap %lx at tl0\n", lvl);
91 die_if_kernel(buffer, regs);
92 }
93
94 lvl -= 0x100;
95 if (regs->tstate & TSTATE_PRIV) {
96 sprintf(buffer, "Kernel bad sw trap %lx", lvl);
97 die_if_kernel(buffer, regs);
98 }
99 if (test_thread_flag(TIF_32BIT)) {
100 regs->tpc &= 0xffffffff;
101 regs->tnpc &= 0xffffffff;
102 }
103 info.si_signo = SIGILL;
104 info.si_errno = 0;
105 info.si_code = ILL_ILLTRP;
106 info.si_addr = (void __user *)regs->tpc;
107 info.si_trapno = lvl;
108 force_sig_info(SIGILL, &info, current);
109}
110
111void bad_trap_tl1(struct pt_regs *regs, long lvl)
112{
113 char buffer[32];
114
115 if (notify_die(DIE_TRAP_TL1, "bad trap tl1", regs,
116 0, lvl, SIGTRAP) == NOTIFY_STOP)
117 return;
118
119 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
120
121 sprintf (buffer, "Bad trap %lx at tl>0", lvl);
122 die_if_kernel (buffer, regs);
123}
124
125#ifdef CONFIG_DEBUG_BUGVERBOSE
126void do_BUG(const char *file, int line)
127{
128 bust_spinlocks(1);
129 printk("kernel BUG at %s:%d!\n", file, line);
130}
131#endif
132
133static DEFINE_SPINLOCK(dimm_handler_lock);
134static dimm_printer_t dimm_handler;
135
136static int sprintf_dimm(int synd_code, unsigned long paddr, char *buf, int buflen)
137{
138 unsigned long flags;
139 int ret = -ENODEV;
140
141 spin_lock_irqsave(&dimm_handler_lock, flags);
142 if (dimm_handler) {
143 ret = dimm_handler(synd_code, paddr, buf, buflen);
144 } else if (tlb_type == spitfire) {
145 if (prom_getunumber(synd_code, paddr, buf, buflen) == -1)
146 ret = -EINVAL;
147 else
148 ret = 0;
149 } else
150 ret = -ENODEV;
151 spin_unlock_irqrestore(&dimm_handler_lock, flags);
152
153 return ret;
154}
155
156int register_dimm_printer(dimm_printer_t func)
157{
158 unsigned long flags;
159 int ret = 0;
160
161 spin_lock_irqsave(&dimm_handler_lock, flags);
162 if (!dimm_handler)
163 dimm_handler = func;
164 else
165 ret = -EEXIST;
166 spin_unlock_irqrestore(&dimm_handler_lock, flags);
167
168 return ret;
169}
170EXPORT_SYMBOL_GPL(register_dimm_printer);
171
172void unregister_dimm_printer(dimm_printer_t func)
173{
174 unsigned long flags;
175
176 spin_lock_irqsave(&dimm_handler_lock, flags);
177 if (dimm_handler == func)
178 dimm_handler = NULL;
179 spin_unlock_irqrestore(&dimm_handler_lock, flags);
180}
181EXPORT_SYMBOL_GPL(unregister_dimm_printer);
182
183void spitfire_insn_access_exception(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
184{
185 siginfo_t info;
186
187 if (notify_die(DIE_TRAP, "instruction access exception", regs,
188 0, 0x8, SIGTRAP) == NOTIFY_STOP)
189 return;
190
191 if (regs->tstate & TSTATE_PRIV) {
192 printk("spitfire_insn_access_exception: SFSR[%016lx] "
193 "SFAR[%016lx], going.\n", sfsr, sfar);
194 die_if_kernel("Iax", regs);
195 }
196 if (test_thread_flag(TIF_32BIT)) {
197 regs->tpc &= 0xffffffff;
198 regs->tnpc &= 0xffffffff;
199 }
200 info.si_signo = SIGSEGV;
201 info.si_errno = 0;
202 info.si_code = SEGV_MAPERR;
203 info.si_addr = (void __user *)regs->tpc;
204 info.si_trapno = 0;
205 force_sig_info(SIGSEGV, &info, current);
206}
207
208void spitfire_insn_access_exception_tl1(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
209{
210 if (notify_die(DIE_TRAP_TL1, "instruction access exception tl1", regs,
211 0, 0x8, SIGTRAP) == NOTIFY_STOP)
212 return;
213
214 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
215 spitfire_insn_access_exception(regs, sfsr, sfar);
216}
217
218void sun4v_insn_access_exception(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
219{
220 unsigned short type = (type_ctx >> 16);
221 unsigned short ctx = (type_ctx & 0xffff);
222 siginfo_t info;
223
224 if (notify_die(DIE_TRAP, "instruction access exception", regs,
225 0, 0x8, SIGTRAP) == NOTIFY_STOP)
226 return;
227
228 if (regs->tstate & TSTATE_PRIV) {
229 printk("sun4v_insn_access_exception: ADDR[%016lx] "
230 "CTX[%04x] TYPE[%04x], going.\n",
231 addr, ctx, type);
232 die_if_kernel("Iax", regs);
233 }
234
235 if (test_thread_flag(TIF_32BIT)) {
236 regs->tpc &= 0xffffffff;
237 regs->tnpc &= 0xffffffff;
238 }
239 info.si_signo = SIGSEGV;
240 info.si_errno = 0;
241 info.si_code = SEGV_MAPERR;
242 info.si_addr = (void __user *) addr;
243 info.si_trapno = 0;
244 force_sig_info(SIGSEGV, &info, current);
245}
246
247void sun4v_insn_access_exception_tl1(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
248{
249 if (notify_die(DIE_TRAP_TL1, "instruction access exception tl1", regs,
250 0, 0x8, SIGTRAP) == NOTIFY_STOP)
251 return;
252
253 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
254 sun4v_insn_access_exception(regs, addr, type_ctx);
255}
256
257void spitfire_data_access_exception(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
258{
259 siginfo_t info;
260
261 if (notify_die(DIE_TRAP, "data access exception", regs,
262 0, 0x30, SIGTRAP) == NOTIFY_STOP)
263 return;
264
265 if (regs->tstate & TSTATE_PRIV) {
266 /* Test if this comes from uaccess places. */
267 const struct exception_table_entry *entry;
268
269 entry = search_exception_tables(regs->tpc);
270 if (entry) {
271 /* Ouch, somebody is trying VM hole tricks on us... */
272#ifdef DEBUG_EXCEPTIONS
273 printk("Exception: PC<%016lx> faddr<UNKNOWN>\n", regs->tpc);
274 printk("EX_TABLE: insn<%016lx> fixup<%016lx>\n",
275 regs->tpc, entry->fixup);
276#endif
277 regs->tpc = entry->fixup;
278 regs->tnpc = regs->tpc + 4;
279 return;
280 }
281 /* Shit... */
282 printk("spitfire_data_access_exception: SFSR[%016lx] "
283 "SFAR[%016lx], going.\n", sfsr, sfar);
284 die_if_kernel("Dax", regs);
285 }
286
287 info.si_signo = SIGSEGV;
288 info.si_errno = 0;
289 info.si_code = SEGV_MAPERR;
290 info.si_addr = (void __user *)sfar;
291 info.si_trapno = 0;
292 force_sig_info(SIGSEGV, &info, current);
293}
294
295void spitfire_data_access_exception_tl1(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
296{
297 if (notify_die(DIE_TRAP_TL1, "data access exception tl1", regs,
298 0, 0x30, SIGTRAP) == NOTIFY_STOP)
299 return;
300
301 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
302 spitfire_data_access_exception(regs, sfsr, sfar);
303}
304
305void sun4v_data_access_exception(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
306{
307 unsigned short type = (type_ctx >> 16);
308 unsigned short ctx = (type_ctx & 0xffff);
309 siginfo_t info;
310
311 if (notify_die(DIE_TRAP, "data access exception", regs,
312 0, 0x8, SIGTRAP) == NOTIFY_STOP)
313 return;
314
315 if (regs->tstate & TSTATE_PRIV) {
316 printk("sun4v_data_access_exception: ADDR[%016lx] "
317 "CTX[%04x] TYPE[%04x], going.\n",
318 addr, ctx, type);
319 die_if_kernel("Dax", regs);
320 }
321
322 if (test_thread_flag(TIF_32BIT)) {
323 regs->tpc &= 0xffffffff;
324 regs->tnpc &= 0xffffffff;
325 }
326 info.si_signo = SIGSEGV;
327 info.si_errno = 0;
328 info.si_code = SEGV_MAPERR;
329 info.si_addr = (void __user *) addr;
330 info.si_trapno = 0;
331 force_sig_info(SIGSEGV, &info, current);
332}
333
334void sun4v_data_access_exception_tl1(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
335{
336 if (notify_die(DIE_TRAP_TL1, "data access exception tl1", regs,
337 0, 0x8, SIGTRAP) == NOTIFY_STOP)
338 return;
339
340 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
341 sun4v_data_access_exception(regs, addr, type_ctx);
342}
343
344#ifdef CONFIG_PCI
345#include "pci_impl.h"
346#endif
347
348/* When access exceptions happen, we must do this. */
349static void spitfire_clean_and_reenable_l1_caches(void)
350{
351 unsigned long va;
352
353 if (tlb_type != spitfire)
354 BUG();
355
356 /* Clean 'em. */
357 for (va = 0; va < (PAGE_SIZE << 1); va += 32) {
358 spitfire_put_icache_tag(va, 0x0);
359 spitfire_put_dcache_tag(va, 0x0);
360 }
361
362 /* Re-enable in LSU. */
363 __asm__ __volatile__("flush %%g6\n\t"
364 "membar #Sync\n\t"
365 "stxa %0, [%%g0] %1\n\t"
366 "membar #Sync"
367 : /* no outputs */
368 : "r" (LSU_CONTROL_IC | LSU_CONTROL_DC |
369 LSU_CONTROL_IM | LSU_CONTROL_DM),
370 "i" (ASI_LSU_CONTROL)
371 : "memory");
372}
373
374static void spitfire_enable_estate_errors(void)
375{
376 __asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
377 "membar #Sync"
378 : /* no outputs */
379 : "r" (ESTATE_ERR_ALL),
380 "i" (ASI_ESTATE_ERROR_EN));
381}
382
383static char ecc_syndrome_table[] = {
384 0x4c, 0x40, 0x41, 0x48, 0x42, 0x48, 0x48, 0x49,
385 0x43, 0x48, 0x48, 0x49, 0x48, 0x49, 0x49, 0x4a,
386 0x44, 0x48, 0x48, 0x20, 0x48, 0x39, 0x4b, 0x48,
387 0x48, 0x25, 0x31, 0x48, 0x28, 0x48, 0x48, 0x2c,
388 0x45, 0x48, 0x48, 0x21, 0x48, 0x3d, 0x04, 0x48,
389 0x48, 0x4b, 0x35, 0x48, 0x2d, 0x48, 0x48, 0x29,
390 0x48, 0x00, 0x01, 0x48, 0x0a, 0x48, 0x48, 0x4b,
391 0x0f, 0x48, 0x48, 0x4b, 0x48, 0x49, 0x49, 0x48,
392 0x46, 0x48, 0x48, 0x2a, 0x48, 0x3b, 0x27, 0x48,
393 0x48, 0x4b, 0x33, 0x48, 0x22, 0x48, 0x48, 0x2e,
394 0x48, 0x19, 0x1d, 0x48, 0x1b, 0x4a, 0x48, 0x4b,
395 0x1f, 0x48, 0x4a, 0x4b, 0x48, 0x4b, 0x4b, 0x48,
396 0x48, 0x4b, 0x24, 0x48, 0x07, 0x48, 0x48, 0x36,
397 0x4b, 0x48, 0x48, 0x3e, 0x48, 0x30, 0x38, 0x48,
398 0x49, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x16, 0x48,
399 0x48, 0x12, 0x4b, 0x48, 0x49, 0x48, 0x48, 0x4b,
400 0x47, 0x48, 0x48, 0x2f, 0x48, 0x3f, 0x4b, 0x48,
401 0x48, 0x06, 0x37, 0x48, 0x23, 0x48, 0x48, 0x2b,
402 0x48, 0x05, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x32,
403 0x26, 0x48, 0x48, 0x3a, 0x48, 0x34, 0x3c, 0x48,
404 0x48, 0x11, 0x15, 0x48, 0x13, 0x4a, 0x48, 0x4b,
405 0x17, 0x48, 0x4a, 0x4b, 0x48, 0x4b, 0x4b, 0x48,
406 0x49, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x1e, 0x48,
407 0x48, 0x1a, 0x4b, 0x48, 0x49, 0x48, 0x48, 0x4b,
408 0x48, 0x08, 0x0d, 0x48, 0x02, 0x48, 0x48, 0x49,
409 0x03, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x4b, 0x48,
410 0x49, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x10, 0x48,
411 0x48, 0x14, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x4b,
412 0x49, 0x48, 0x48, 0x49, 0x48, 0x4b, 0x18, 0x48,
413 0x48, 0x1c, 0x4b, 0x48, 0x4b, 0x48, 0x48, 0x4b,
414 0x4a, 0x0c, 0x09, 0x48, 0x0e, 0x48, 0x48, 0x4b,
415 0x0b, 0x48, 0x48, 0x4b, 0x48, 0x4b, 0x4b, 0x4a
416};
417
418static char *syndrome_unknown = "<Unknown>";
419
420static void spitfire_log_udb_syndrome(unsigned long afar, unsigned long udbh, unsigned long udbl, unsigned long bit)
421{
422 unsigned short scode;
423 char memmod_str[64], *p;
424
425 if (udbl & bit) {
426 scode = ecc_syndrome_table[udbl & 0xff];
427 if (sprintf_dimm(scode, afar, memmod_str, sizeof(memmod_str)) < 0)
428 p = syndrome_unknown;
429 else
430 p = memmod_str;
431 printk(KERN_WARNING "CPU[%d]: UDBL Syndrome[%x] "
432 "Memory Module \"%s\"\n",
433 smp_processor_id(), scode, p);
434 }
435
436 if (udbh & bit) {
437 scode = ecc_syndrome_table[udbh & 0xff];
438 if (sprintf_dimm(scode, afar, memmod_str, sizeof(memmod_str)) < 0)
439 p = syndrome_unknown;
440 else
441 p = memmod_str;
442 printk(KERN_WARNING "CPU[%d]: UDBH Syndrome[%x] "
443 "Memory Module \"%s\"\n",
444 smp_processor_id(), scode, p);
445 }
446
447}
448
449static void spitfire_cee_log(unsigned long afsr, unsigned long afar, unsigned long udbh, unsigned long udbl, int tl1, struct pt_regs *regs)
450{
451
452 printk(KERN_WARNING "CPU[%d]: Correctable ECC Error "
453 "AFSR[%lx] AFAR[%016lx] UDBL[%lx] UDBH[%lx] TL>1[%d]\n",
454 smp_processor_id(), afsr, afar, udbl, udbh, tl1);
455
456 spitfire_log_udb_syndrome(afar, udbh, udbl, UDBE_CE);
457
458 /* We always log it, even if someone is listening for this
459 * trap.
460 */
461 notify_die(DIE_TRAP, "Correctable ECC Error", regs,
462 0, TRAP_TYPE_CEE, SIGTRAP);
463
464 /* The Correctable ECC Error trap does not disable I/D caches. So
465 * we only have to restore the ESTATE Error Enable register.
466 */
467 spitfire_enable_estate_errors();
468}
469
470static void spitfire_ue_log(unsigned long afsr, unsigned long afar, unsigned long udbh, unsigned long udbl, unsigned long tt, int tl1, struct pt_regs *regs)
471{
472 siginfo_t info;
473
474 printk(KERN_WARNING "CPU[%d]: Uncorrectable Error AFSR[%lx] "
475 "AFAR[%lx] UDBL[%lx] UDBH[%ld] TT[%lx] TL>1[%d]\n",
476 smp_processor_id(), afsr, afar, udbl, udbh, tt, tl1);
477
478 /* XXX add more human friendly logging of the error status
479 * XXX as is implemented for cheetah
480 */
481
482 spitfire_log_udb_syndrome(afar, udbh, udbl, UDBE_UE);
483
484 /* We always log it, even if someone is listening for this
485 * trap.
486 */
487 notify_die(DIE_TRAP, "Uncorrectable Error", regs,
488 0, tt, SIGTRAP);
489
490 if (regs->tstate & TSTATE_PRIV) {
491 if (tl1)
492 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
493 die_if_kernel("UE", regs);
494 }
495
496 /* XXX need more intelligent processing here, such as is implemented
497 * XXX for cheetah errors, in fact if the E-cache still holds the
498 * XXX line with bad parity this will loop
499 */
500
501 spitfire_clean_and_reenable_l1_caches();
502 spitfire_enable_estate_errors();
503
504 if (test_thread_flag(TIF_32BIT)) {
505 regs->tpc &= 0xffffffff;
506 regs->tnpc &= 0xffffffff;
507 }
508 info.si_signo = SIGBUS;
509 info.si_errno = 0;
510 info.si_code = BUS_OBJERR;
511 info.si_addr = (void *)0;
512 info.si_trapno = 0;
513 force_sig_info(SIGBUS, &info, current);
514}
515
516void spitfire_access_error(struct pt_regs *regs, unsigned long status_encoded, unsigned long afar)
517{
518 unsigned long afsr, tt, udbh, udbl;
519 int tl1;
520
521 afsr = (status_encoded & SFSTAT_AFSR_MASK) >> SFSTAT_AFSR_SHIFT;
522 tt = (status_encoded & SFSTAT_TRAP_TYPE) >> SFSTAT_TRAP_TYPE_SHIFT;
523 tl1 = (status_encoded & SFSTAT_TL_GT_ONE) ? 1 : 0;
524 udbl = (status_encoded & SFSTAT_UDBL_MASK) >> SFSTAT_UDBL_SHIFT;
525 udbh = (status_encoded & SFSTAT_UDBH_MASK) >> SFSTAT_UDBH_SHIFT;
526
527#ifdef CONFIG_PCI
528 if (tt == TRAP_TYPE_DAE &&
529 pci_poke_in_progress && pci_poke_cpu == smp_processor_id()) {
530 spitfire_clean_and_reenable_l1_caches();
531 spitfire_enable_estate_errors();
532
533 pci_poke_faulted = 1;
534 regs->tnpc = regs->tpc + 4;
535 return;
536 }
537#endif
538
539 if (afsr & SFAFSR_UE)
540 spitfire_ue_log(afsr, afar, udbh, udbl, tt, tl1, regs);
541
542 if (tt == TRAP_TYPE_CEE) {
543 /* Handle the case where we took a CEE trap, but ACK'd
544 * only the UE state in the UDB error registers.
545 */
546 if (afsr & SFAFSR_UE) {
547 if (udbh & UDBE_CE) {
548 __asm__ __volatile__(
549 "stxa %0, [%1] %2\n\t"
550 "membar #Sync"
551 : /* no outputs */
552 : "r" (udbh & UDBE_CE),
553 "r" (0x0), "i" (ASI_UDB_ERROR_W));
554 }
555 if (udbl & UDBE_CE) {
556 __asm__ __volatile__(
557 "stxa %0, [%1] %2\n\t"
558 "membar #Sync"
559 : /* no outputs */
560 : "r" (udbl & UDBE_CE),
561 "r" (0x18), "i" (ASI_UDB_ERROR_W));
562 }
563 }
564
565 spitfire_cee_log(afsr, afar, udbh, udbl, tl1, regs);
566 }
567}
568
569int cheetah_pcache_forced_on;
570
571void cheetah_enable_pcache(void)
572{
573 unsigned long dcr;
574
575 printk("CHEETAH: Enabling P-Cache on cpu %d.\n",
576 smp_processor_id());
577
578 __asm__ __volatile__("ldxa [%%g0] %1, %0"
579 : "=r" (dcr)
580 : "i" (ASI_DCU_CONTROL_REG));
581 dcr |= (DCU_PE | DCU_HPE | DCU_SPE | DCU_SL);
582 __asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
583 "membar #Sync"
584 : /* no outputs */
585 : "r" (dcr), "i" (ASI_DCU_CONTROL_REG));
586}
587
588/* Cheetah error trap handling. */
589static unsigned long ecache_flush_physbase;
590static unsigned long ecache_flush_linesize;
591static unsigned long ecache_flush_size;
592
593/* This table is ordered in priority of errors and matches the
594 * AFAR overwrite policy as well.
595 */
596
597struct afsr_error_table {
598 unsigned long mask;
599 const char *name;
600};
601
602static const char CHAFSR_PERR_msg[] =
603 "System interface protocol error";
604static const char CHAFSR_IERR_msg[] =
605 "Internal processor error";
606static const char CHAFSR_ISAP_msg[] =
607 "System request parity error on incoming addresss";
608static const char CHAFSR_UCU_msg[] =
609 "Uncorrectable E-cache ECC error for ifetch/data";
610static const char CHAFSR_UCC_msg[] =
611 "SW Correctable E-cache ECC error for ifetch/data";
612static const char CHAFSR_UE_msg[] =
613 "Uncorrectable system bus data ECC error for read";
614static const char CHAFSR_EDU_msg[] =
615 "Uncorrectable E-cache ECC error for stmerge/blkld";
616static const char CHAFSR_EMU_msg[] =
617 "Uncorrectable system bus MTAG error";
618static const char CHAFSR_WDU_msg[] =
619 "Uncorrectable E-cache ECC error for writeback";
620static const char CHAFSR_CPU_msg[] =
621 "Uncorrectable ECC error for copyout";
622static const char CHAFSR_CE_msg[] =
623 "HW corrected system bus data ECC error for read";
624static const char CHAFSR_EDC_msg[] =
625 "HW corrected E-cache ECC error for stmerge/blkld";
626static const char CHAFSR_EMC_msg[] =
627 "HW corrected system bus MTAG ECC error";
628static const char CHAFSR_WDC_msg[] =
629 "HW corrected E-cache ECC error for writeback";
630static const char CHAFSR_CPC_msg[] =
631 "HW corrected ECC error for copyout";
632static const char CHAFSR_TO_msg[] =
633 "Unmapped error from system bus";
634static const char CHAFSR_BERR_msg[] =
635 "Bus error response from system bus";
636static const char CHAFSR_IVC_msg[] =
637 "HW corrected system bus data ECC error for ivec read";
638static const char CHAFSR_IVU_msg[] =
639 "Uncorrectable system bus data ECC error for ivec read";
640static struct afsr_error_table __cheetah_error_table[] = {
641 { CHAFSR_PERR, CHAFSR_PERR_msg },
642 { CHAFSR_IERR, CHAFSR_IERR_msg },
643 { CHAFSR_ISAP, CHAFSR_ISAP_msg },
644 { CHAFSR_UCU, CHAFSR_UCU_msg },
645 { CHAFSR_UCC, CHAFSR_UCC_msg },
646 { CHAFSR_UE, CHAFSR_UE_msg },
647 { CHAFSR_EDU, CHAFSR_EDU_msg },
648 { CHAFSR_EMU, CHAFSR_EMU_msg },
649 { CHAFSR_WDU, CHAFSR_WDU_msg },
650 { CHAFSR_CPU, CHAFSR_CPU_msg },
651 { CHAFSR_CE, CHAFSR_CE_msg },
652 { CHAFSR_EDC, CHAFSR_EDC_msg },
653 { CHAFSR_EMC, CHAFSR_EMC_msg },
654 { CHAFSR_WDC, CHAFSR_WDC_msg },
655 { CHAFSR_CPC, CHAFSR_CPC_msg },
656 { CHAFSR_TO, CHAFSR_TO_msg },
657 { CHAFSR_BERR, CHAFSR_BERR_msg },
658 /* These two do not update the AFAR. */
659 { CHAFSR_IVC, CHAFSR_IVC_msg },
660 { CHAFSR_IVU, CHAFSR_IVU_msg },
661 { 0, NULL },
662};
663static const char CHPAFSR_DTO_msg[] =
664 "System bus unmapped error for prefetch/storequeue-read";
665static const char CHPAFSR_DBERR_msg[] =
666 "System bus error for prefetch/storequeue-read";
667static const char CHPAFSR_THCE_msg[] =
668 "Hardware corrected E-cache Tag ECC error";
669static const char CHPAFSR_TSCE_msg[] =
670 "SW handled correctable E-cache Tag ECC error";
671static const char CHPAFSR_TUE_msg[] =
672 "Uncorrectable E-cache Tag ECC error";
673static const char CHPAFSR_DUE_msg[] =
674 "System bus uncorrectable data ECC error due to prefetch/store-fill";
675static struct afsr_error_table __cheetah_plus_error_table[] = {
676 { CHAFSR_PERR, CHAFSR_PERR_msg },
677 { CHAFSR_IERR, CHAFSR_IERR_msg },
678 { CHAFSR_ISAP, CHAFSR_ISAP_msg },
679 { CHAFSR_UCU, CHAFSR_UCU_msg },
680 { CHAFSR_UCC, CHAFSR_UCC_msg },
681 { CHAFSR_UE, CHAFSR_UE_msg },
682 { CHAFSR_EDU, CHAFSR_EDU_msg },
683 { CHAFSR_EMU, CHAFSR_EMU_msg },
684 { CHAFSR_WDU, CHAFSR_WDU_msg },
685 { CHAFSR_CPU, CHAFSR_CPU_msg },
686 { CHAFSR_CE, CHAFSR_CE_msg },
687 { CHAFSR_EDC, CHAFSR_EDC_msg },
688 { CHAFSR_EMC, CHAFSR_EMC_msg },
689 { CHAFSR_WDC, CHAFSR_WDC_msg },
690 { CHAFSR_CPC, CHAFSR_CPC_msg },
691 { CHAFSR_TO, CHAFSR_TO_msg },
692 { CHAFSR_BERR, CHAFSR_BERR_msg },
693 { CHPAFSR_DTO, CHPAFSR_DTO_msg },
694 { CHPAFSR_DBERR, CHPAFSR_DBERR_msg },
695 { CHPAFSR_THCE, CHPAFSR_THCE_msg },
696 { CHPAFSR_TSCE, CHPAFSR_TSCE_msg },
697 { CHPAFSR_TUE, CHPAFSR_TUE_msg },
698 { CHPAFSR_DUE, CHPAFSR_DUE_msg },
699 /* These two do not update the AFAR. */
700 { CHAFSR_IVC, CHAFSR_IVC_msg },
701 { CHAFSR_IVU, CHAFSR_IVU_msg },
702 { 0, NULL },
703};
704static const char JPAFSR_JETO_msg[] =
705 "System interface protocol error, hw timeout caused";
706static const char JPAFSR_SCE_msg[] =
707 "Parity error on system snoop results";
708static const char JPAFSR_JEIC_msg[] =
709 "System interface protocol error, illegal command detected";
710static const char JPAFSR_JEIT_msg[] =
711 "System interface protocol error, illegal ADTYPE detected";
712static const char JPAFSR_OM_msg[] =
713 "Out of range memory error has occurred";
714static const char JPAFSR_ETP_msg[] =
715 "Parity error on L2 cache tag SRAM";
716static const char JPAFSR_UMS_msg[] =
717 "Error due to unsupported store";
718static const char JPAFSR_RUE_msg[] =
719 "Uncorrectable ECC error from remote cache/memory";
720static const char JPAFSR_RCE_msg[] =
721 "Correctable ECC error from remote cache/memory";
722static const char JPAFSR_BP_msg[] =
723 "JBUS parity error on returned read data";
724static const char JPAFSR_WBP_msg[] =
725 "JBUS parity error on data for writeback or block store";
726static const char JPAFSR_FRC_msg[] =
727 "Foreign read to DRAM incurring correctable ECC error";
728static const char JPAFSR_FRU_msg[] =
729 "Foreign read to DRAM incurring uncorrectable ECC error";
730static struct afsr_error_table __jalapeno_error_table[] = {
731 { JPAFSR_JETO, JPAFSR_JETO_msg },
732 { JPAFSR_SCE, JPAFSR_SCE_msg },
733 { JPAFSR_JEIC, JPAFSR_JEIC_msg },
734 { JPAFSR_JEIT, JPAFSR_JEIT_msg },
735 { CHAFSR_PERR, CHAFSR_PERR_msg },
736 { CHAFSR_IERR, CHAFSR_IERR_msg },
737 { CHAFSR_ISAP, CHAFSR_ISAP_msg },
738 { CHAFSR_UCU, CHAFSR_UCU_msg },
739 { CHAFSR_UCC, CHAFSR_UCC_msg },
740 { CHAFSR_UE, CHAFSR_UE_msg },
741 { CHAFSR_EDU, CHAFSR_EDU_msg },
742 { JPAFSR_OM, JPAFSR_OM_msg },
743 { CHAFSR_WDU, CHAFSR_WDU_msg },
744 { CHAFSR_CPU, CHAFSR_CPU_msg },
745 { CHAFSR_CE, CHAFSR_CE_msg },
746 { CHAFSR_EDC, CHAFSR_EDC_msg },
747 { JPAFSR_ETP, JPAFSR_ETP_msg },
748 { CHAFSR_WDC, CHAFSR_WDC_msg },
749 { CHAFSR_CPC, CHAFSR_CPC_msg },
750 { CHAFSR_TO, CHAFSR_TO_msg },
751 { CHAFSR_BERR, CHAFSR_BERR_msg },
752 { JPAFSR_UMS, JPAFSR_UMS_msg },
753 { JPAFSR_RUE, JPAFSR_RUE_msg },
754 { JPAFSR_RCE, JPAFSR_RCE_msg },
755 { JPAFSR_BP, JPAFSR_BP_msg },
756 { JPAFSR_WBP, JPAFSR_WBP_msg },
757 { JPAFSR_FRC, JPAFSR_FRC_msg },
758 { JPAFSR_FRU, JPAFSR_FRU_msg },
759 /* These two do not update the AFAR. */
760 { CHAFSR_IVU, CHAFSR_IVU_msg },
761 { 0, NULL },
762};
763static struct afsr_error_table *cheetah_error_table;
764static unsigned long cheetah_afsr_errors;
765
766struct cheetah_err_info *cheetah_error_log;
767
768static inline struct cheetah_err_info *cheetah_get_error_log(unsigned long afsr)
769{
770 struct cheetah_err_info *p;
771 int cpu = smp_processor_id();
772
773 if (!cheetah_error_log)
774 return NULL;
775
776 p = cheetah_error_log + (cpu * 2);
777 if ((afsr & CHAFSR_TL1) != 0UL)
778 p++;
779
780 return p;
781}
782
783extern unsigned int tl0_icpe[], tl1_icpe[];
784extern unsigned int tl0_dcpe[], tl1_dcpe[];
785extern unsigned int tl0_fecc[], tl1_fecc[];
786extern unsigned int tl0_cee[], tl1_cee[];
787extern unsigned int tl0_iae[], tl1_iae[];
788extern unsigned int tl0_dae[], tl1_dae[];
789extern unsigned int cheetah_plus_icpe_trap_vector[], cheetah_plus_icpe_trap_vector_tl1[];
790extern unsigned int cheetah_plus_dcpe_trap_vector[], cheetah_plus_dcpe_trap_vector_tl1[];
791extern unsigned int cheetah_fecc_trap_vector[], cheetah_fecc_trap_vector_tl1[];
792extern unsigned int cheetah_cee_trap_vector[], cheetah_cee_trap_vector_tl1[];
793extern unsigned int cheetah_deferred_trap_vector[], cheetah_deferred_trap_vector_tl1[];
794
795void __init cheetah_ecache_flush_init(void)
796{
797 unsigned long largest_size, smallest_linesize, order, ver;
798 int i, sz;
799
800 /* Scan all cpu device tree nodes, note two values:
801 * 1) largest E-cache size
802 * 2) smallest E-cache line size
803 */
804 largest_size = 0UL;
805 smallest_linesize = ~0UL;
806
807 for (i = 0; i < NR_CPUS; i++) {
808 unsigned long val;
809
810 val = cpu_data(i).ecache_size;
811 if (!val)
812 continue;
813
814 if (val > largest_size)
815 largest_size = val;
816
817 val = cpu_data(i).ecache_line_size;
818 if (val < smallest_linesize)
819 smallest_linesize = val;
820
821 }
822
823 if (largest_size == 0UL || smallest_linesize == ~0UL) {
824 prom_printf("cheetah_ecache_flush_init: Cannot probe cpu E-cache "
825 "parameters.\n");
826 prom_halt();
827 }
828
829 ecache_flush_size = (2 * largest_size);
830 ecache_flush_linesize = smallest_linesize;
831
832 ecache_flush_physbase = find_ecache_flush_span(ecache_flush_size);
833
834 if (ecache_flush_physbase == ~0UL) {
835 prom_printf("cheetah_ecache_flush_init: Cannot find %d byte "
836 "contiguous physical memory.\n",
837 ecache_flush_size);
838 prom_halt();
839 }
840
841 /* Now allocate error trap reporting scoreboard. */
842 sz = NR_CPUS * (2 * sizeof(struct cheetah_err_info));
843 for (order = 0; order < MAX_ORDER; order++) {
844 if ((PAGE_SIZE << order) >= sz)
845 break;
846 }
847 cheetah_error_log = (struct cheetah_err_info *)
848 __get_free_pages(GFP_KERNEL, order);
849 if (!cheetah_error_log) {
850 prom_printf("cheetah_ecache_flush_init: Failed to allocate "
851 "error logging scoreboard (%d bytes).\n", sz);
852 prom_halt();
853 }
854 memset(cheetah_error_log, 0, PAGE_SIZE << order);
855
856 /* Mark all AFSRs as invalid so that the trap handler will
857 * log new new information there.
858 */
859 for (i = 0; i < 2 * NR_CPUS; i++)
860 cheetah_error_log[i].afsr = CHAFSR_INVALID;
861
862 __asm__ ("rdpr %%ver, %0" : "=r" (ver));
863 if ((ver >> 32) == __JALAPENO_ID ||
864 (ver >> 32) == __SERRANO_ID) {
865 cheetah_error_table = &__jalapeno_error_table[0];
866 cheetah_afsr_errors = JPAFSR_ERRORS;
867 } else if ((ver >> 32) == 0x003e0015) {
868 cheetah_error_table = &__cheetah_plus_error_table[0];
869 cheetah_afsr_errors = CHPAFSR_ERRORS;
870 } else {
871 cheetah_error_table = &__cheetah_error_table[0];
872 cheetah_afsr_errors = CHAFSR_ERRORS;
873 }
874
875 /* Now patch trap tables. */
876 memcpy(tl0_fecc, cheetah_fecc_trap_vector, (8 * 4));
877 memcpy(tl1_fecc, cheetah_fecc_trap_vector_tl1, (8 * 4));
878 memcpy(tl0_cee, cheetah_cee_trap_vector, (8 * 4));
879 memcpy(tl1_cee, cheetah_cee_trap_vector_tl1, (8 * 4));
880 memcpy(tl0_iae, cheetah_deferred_trap_vector, (8 * 4));
881 memcpy(tl1_iae, cheetah_deferred_trap_vector_tl1, (8 * 4));
882 memcpy(tl0_dae, cheetah_deferred_trap_vector, (8 * 4));
883 memcpy(tl1_dae, cheetah_deferred_trap_vector_tl1, (8 * 4));
884 if (tlb_type == cheetah_plus) {
885 memcpy(tl0_dcpe, cheetah_plus_dcpe_trap_vector, (8 * 4));
886 memcpy(tl1_dcpe, cheetah_plus_dcpe_trap_vector_tl1, (8 * 4));
887 memcpy(tl0_icpe, cheetah_plus_icpe_trap_vector, (8 * 4));
888 memcpy(tl1_icpe, cheetah_plus_icpe_trap_vector_tl1, (8 * 4));
889 }
890 flushi(PAGE_OFFSET);
891}
892
893static void cheetah_flush_ecache(void)
894{
895 unsigned long flush_base = ecache_flush_physbase;
896 unsigned long flush_linesize = ecache_flush_linesize;
897 unsigned long flush_size = ecache_flush_size;
898
899 __asm__ __volatile__("1: subcc %0, %4, %0\n\t"
900 " bne,pt %%xcc, 1b\n\t"
901 " ldxa [%2 + %0] %3, %%g0\n\t"
902 : "=&r" (flush_size)
903 : "0" (flush_size), "r" (flush_base),
904 "i" (ASI_PHYS_USE_EC), "r" (flush_linesize));
905}
906
907static void cheetah_flush_ecache_line(unsigned long physaddr)
908{
909 unsigned long alias;
910
911 physaddr &= ~(8UL - 1UL);
912 physaddr = (ecache_flush_physbase +
913 (physaddr & ((ecache_flush_size>>1UL) - 1UL)));
914 alias = physaddr + (ecache_flush_size >> 1UL);
915 __asm__ __volatile__("ldxa [%0] %2, %%g0\n\t"
916 "ldxa [%1] %2, %%g0\n\t"
917 "membar #Sync"
918 : /* no outputs */
919 : "r" (physaddr), "r" (alias),
920 "i" (ASI_PHYS_USE_EC));
921}
922
923/* Unfortunately, the diagnostic access to the I-cache tags we need to
924 * use to clear the thing interferes with I-cache coherency transactions.
925 *
926 * So we must only flush the I-cache when it is disabled.
927 */
928static void __cheetah_flush_icache(void)
929{
930 unsigned int icache_size, icache_line_size;
931 unsigned long addr;
932
933 icache_size = local_cpu_data().icache_size;
934 icache_line_size = local_cpu_data().icache_line_size;
935
936 /* Clear the valid bits in all the tags. */
937 for (addr = 0; addr < icache_size; addr += icache_line_size) {
938 __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
939 "membar #Sync"
940 : /* no outputs */
941 : "r" (addr | (2 << 3)),
942 "i" (ASI_IC_TAG));
943 }
944}
945
946static void cheetah_flush_icache(void)
947{
948 unsigned long dcu_save;
949
950 /* Save current DCU, disable I-cache. */
951 __asm__ __volatile__("ldxa [%%g0] %1, %0\n\t"
952 "or %0, %2, %%g1\n\t"
953 "stxa %%g1, [%%g0] %1\n\t"
954 "membar #Sync"
955 : "=r" (dcu_save)
956 : "i" (ASI_DCU_CONTROL_REG), "i" (DCU_IC)
957 : "g1");
958
959 __cheetah_flush_icache();
960
961 /* Restore DCU register */
962 __asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
963 "membar #Sync"
964 : /* no outputs */
965 : "r" (dcu_save), "i" (ASI_DCU_CONTROL_REG));
966}
967
968static void cheetah_flush_dcache(void)
969{
970 unsigned int dcache_size, dcache_line_size;
971 unsigned long addr;
972
973 dcache_size = local_cpu_data().dcache_size;
974 dcache_line_size = local_cpu_data().dcache_line_size;
975
976 for (addr = 0; addr < dcache_size; addr += dcache_line_size) {
977 __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
978 "membar #Sync"
979 : /* no outputs */
980 : "r" (addr), "i" (ASI_DCACHE_TAG));
981 }
982}
983
984/* In order to make the even parity correct we must do two things.
985 * First, we clear DC_data_parity and set DC_utag to an appropriate value.
986 * Next, we clear out all 32-bytes of data for that line. Data of
987 * all-zero + tag parity value of zero == correct parity.
988 */
989static void cheetah_plus_zap_dcache_parity(void)
990{
991 unsigned int dcache_size, dcache_line_size;
992 unsigned long addr;
993
994 dcache_size = local_cpu_data().dcache_size;
995 dcache_line_size = local_cpu_data().dcache_line_size;
996
997 for (addr = 0; addr < dcache_size; addr += dcache_line_size) {
998 unsigned long tag = (addr >> 14);
999 unsigned long line;
1000
1001 __asm__ __volatile__("membar #Sync\n\t"
1002 "stxa %0, [%1] %2\n\t"
1003 "membar #Sync"
1004 : /* no outputs */
1005 : "r" (tag), "r" (addr),
1006 "i" (ASI_DCACHE_UTAG));
1007 for (line = addr; line < addr + dcache_line_size; line += 8)
1008 __asm__ __volatile__("membar #Sync\n\t"
1009 "stxa %%g0, [%0] %1\n\t"
1010 "membar #Sync"
1011 : /* no outputs */
1012 : "r" (line),
1013 "i" (ASI_DCACHE_DATA));
1014 }
1015}
1016
1017/* Conversion tables used to frob Cheetah AFSR syndrome values into
1018 * something palatable to the memory controller driver get_unumber
1019 * routine.
1020 */
1021#define MT0 137
1022#define MT1 138
1023#define MT2 139
1024#define NONE 254
1025#define MTC0 140
1026#define MTC1 141
1027#define MTC2 142
1028#define MTC3 143
1029#define C0 128
1030#define C1 129
1031#define C2 130
1032#define C3 131
1033#define C4 132
1034#define C5 133
1035#define C6 134
1036#define C7 135
1037#define C8 136
1038#define M2 144
1039#define M3 145
1040#define M4 146
1041#define M 147
1042static unsigned char cheetah_ecc_syntab[] = {
1043/*00*/NONE, C0, C1, M2, C2, M2, M3, 47, C3, M2, M2, 53, M2, 41, 29, M,
1044/*01*/C4, M, M, 50, M2, 38, 25, M2, M2, 33, 24, M2, 11, M, M2, 16,
1045/*02*/C5, M, M, 46, M2, 37, 19, M2, M, 31, 32, M, 7, M2, M2, 10,
1046/*03*/M2, 40, 13, M2, 59, M, M2, 66, M, M2, M2, 0, M2, 67, 71, M,
1047/*04*/C6, M, M, 43, M, 36, 18, M, M2, 49, 15, M, 63, M2, M2, 6,
1048/*05*/M2, 44, 28, M2, M, M2, M2, 52, 68, M2, M2, 62, M2, M3, M3, M4,
1049/*06*/M2, 26, 106, M2, 64, M, M2, 2, 120, M, M2, M3, M, M3, M3, M4,
1050/*07*/116, M2, M2, M3, M2, M3, M, M4, M2, 58, 54, M2, M, M4, M4, M3,
1051/*08*/C7, M2, M, 42, M, 35, 17, M2, M, 45, 14, M2, 21, M2, M2, 5,
1052/*09*/M, 27, M, M, 99, M, M, 3, 114, M2, M2, 20, M2, M3, M3, M,
1053/*0a*/M2, 23, 113, M2, 112, M2, M, 51, 95, M, M2, M3, M2, M3, M3, M2,
1054/*0b*/103, M, M2, M3, M2, M3, M3, M4, M2, 48, M, M, 73, M2, M, M3,
1055/*0c*/M2, 22, 110, M2, 109, M2, M, 9, 108, M2, M, M3, M2, M3, M3, M,
1056/*0d*/102, M2, M, M, M2, M3, M3, M, M2, M3, M3, M2, M, M4, M, M3,
1057/*0e*/98, M, M2, M3, M2, M, M3, M4, M2, M3, M3, M4, M3, M, M, M,
1058/*0f*/M2, M3, M3, M, M3, M, M, M, 56, M4, M, M3, M4, M, M, M,
1059/*10*/C8, M, M2, 39, M, 34, 105, M2, M, 30, 104, M, 101, M, M, 4,
1060/*11*/M, M, 100, M, 83, M, M2, 12, 87, M, M, 57, M2, M, M3, M,
1061/*12*/M2, 97, 82, M2, 78, M2, M2, 1, 96, M, M, M, M, M, M3, M2,
1062/*13*/94, M, M2, M3, M2, M, M3, M, M2, M, 79, M, 69, M, M4, M,
1063/*14*/M2, 93, 92, M, 91, M, M2, 8, 90, M2, M2, M, M, M, M, M4,
1064/*15*/89, M, M, M3, M2, M3, M3, M, M, M, M3, M2, M3, M2, M, M3,
1065/*16*/86, M, M2, M3, M2, M, M3, M, M2, M, M3, M, M3, M, M, M3,
1066/*17*/M, M, M3, M2, M3, M2, M4, M, 60, M, M2, M3, M4, M, M, M2,
1067/*18*/M2, 88, 85, M2, 84, M, M2, 55, 81, M2, M2, M3, M2, M3, M3, M4,
1068/*19*/77, M, M, M, M2, M3, M, M, M2, M3, M3, M4, M3, M2, M, M,
1069/*1a*/74, M, M2, M3, M, M, M3, M, M, M, M3, M, M3, M, M4, M3,
1070/*1b*/M2, 70, 107, M4, 65, M2, M2, M, 127, M, M, M, M2, M3, M3, M,
1071/*1c*/80, M2, M2, 72, M, 119, 118, M, M2, 126, 76, M, 125, M, M4, M3,
1072/*1d*/M2, 115, 124, M, 75, M, M, M3, 61, M, M4, M, M4, M, M, M,
1073/*1e*/M, 123, 122, M4, 121, M4, M, M3, 117, M2, M2, M3, M4, M3, M, M,
1074/*1f*/111, M, M, M, M4, M3, M3, M, M, M, M3, M, M3, M2, M, M
1075};
1076static unsigned char cheetah_mtag_syntab[] = {
1077 NONE, MTC0,
1078 MTC1, NONE,
1079 MTC2, NONE,
1080 NONE, MT0,
1081 MTC3, NONE,
1082 NONE, MT1,
1083 NONE, MT2,
1084 NONE, NONE
1085};
1086
1087/* Return the highest priority error conditon mentioned. */
1088static inline unsigned long cheetah_get_hipri(unsigned long afsr)
1089{
1090 unsigned long tmp = 0;
1091 int i;
1092
1093 for (i = 0; cheetah_error_table[i].mask; i++) {
1094 if ((tmp = (afsr & cheetah_error_table[i].mask)) != 0UL)
1095 return tmp;
1096 }
1097 return tmp;
1098}
1099
1100static const char *cheetah_get_string(unsigned long bit)
1101{
1102 int i;
1103
1104 for (i = 0; cheetah_error_table[i].mask; i++) {
1105 if ((bit & cheetah_error_table[i].mask) != 0UL)
1106 return cheetah_error_table[i].name;
1107 }
1108 return "???";
1109}
1110
1111static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *info,
1112 unsigned long afsr, unsigned long afar, int recoverable)
1113{
1114 unsigned long hipri;
1115 char unum[256];
1116
1117 printk("%s" "ERROR(%d): Cheetah error trap taken afsr[%016lx] afar[%016lx] TL1(%d)\n",
1118 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
1119 afsr, afar,
1120 (afsr & CHAFSR_TL1) ? 1 : 0);
1121 printk("%s" "ERROR(%d): TPC[%lx] TNPC[%lx] O7[%lx] TSTATE[%lx]\n",
1122 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
1123 regs->tpc, regs->tnpc, regs->u_regs[UREG_I7], regs->tstate);
1124 printk("%s" "ERROR(%d): ",
1125 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id());
1126 printk("TPC<%pS>\n", (void *) regs->tpc);
1127 printk("%s" "ERROR(%d): M_SYND(%lx), E_SYND(%lx)%s%s\n",
1128 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
1129 (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT,
1130 (afsr & CHAFSR_E_SYNDROME) >> CHAFSR_E_SYNDROME_SHIFT,
1131 (afsr & CHAFSR_ME) ? ", Multiple Errors" : "",
1132 (afsr & CHAFSR_PRIV) ? ", Privileged" : "");
1133 hipri = cheetah_get_hipri(afsr);
1134 printk("%s" "ERROR(%d): Highest priority error (%016lx) \"%s\"\n",
1135 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
1136 hipri, cheetah_get_string(hipri));
1137
1138 /* Try to get unumber if relevant. */
1139#define ESYND_ERRORS (CHAFSR_IVC | CHAFSR_IVU | \
1140 CHAFSR_CPC | CHAFSR_CPU | \
1141 CHAFSR_UE | CHAFSR_CE | \
1142 CHAFSR_EDC | CHAFSR_EDU | \
1143 CHAFSR_UCC | CHAFSR_UCU | \
1144 CHAFSR_WDU | CHAFSR_WDC)
1145#define MSYND_ERRORS (CHAFSR_EMC | CHAFSR_EMU)
1146 if (afsr & ESYND_ERRORS) {
1147 int syndrome;
1148 int ret;
1149
1150 syndrome = (afsr & CHAFSR_E_SYNDROME) >> CHAFSR_E_SYNDROME_SHIFT;
1151 syndrome = cheetah_ecc_syntab[syndrome];
1152 ret = sprintf_dimm(syndrome, afar, unum, sizeof(unum));
1153 if (ret != -1)
1154 printk("%s" "ERROR(%d): AFAR E-syndrome [%s]\n",
1155 (recoverable ? KERN_WARNING : KERN_CRIT),
1156 smp_processor_id(), unum);
1157 } else if (afsr & MSYND_ERRORS) {
1158 int syndrome;
1159 int ret;
1160
1161 syndrome = (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT;
1162 syndrome = cheetah_mtag_syntab[syndrome];
1163 ret = sprintf_dimm(syndrome, afar, unum, sizeof(unum));
1164 if (ret != -1)
1165 printk("%s" "ERROR(%d): AFAR M-syndrome [%s]\n",
1166 (recoverable ? KERN_WARNING : KERN_CRIT),
1167 smp_processor_id(), unum);
1168 }
1169
1170 /* Now dump the cache snapshots. */
1171 printk("%s" "ERROR(%d): D-cache idx[%x] tag[%016lx] utag[%016lx] stag[%016lx]\n",
1172 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
1173 (int) info->dcache_index,
1174 info->dcache_tag,
1175 info->dcache_utag,
1176 info->dcache_stag);
1177 printk("%s" "ERROR(%d): D-cache data0[%016lx] data1[%016lx] data2[%016lx] data3[%016lx]\n",
1178 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
1179 info->dcache_data[0],
1180 info->dcache_data[1],
1181 info->dcache_data[2],
1182 info->dcache_data[3]);
1183 printk("%s" "ERROR(%d): I-cache idx[%x] tag[%016lx] utag[%016lx] stag[%016lx] "
1184 "u[%016lx] l[%016lx]\n",
1185 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
1186 (int) info->icache_index,
1187 info->icache_tag,
1188 info->icache_utag,
1189 info->icache_stag,
1190 info->icache_upper,
1191 info->icache_lower);
1192 printk("%s" "ERROR(%d): I-cache INSN0[%016lx] INSN1[%016lx] INSN2[%016lx] INSN3[%016lx]\n",
1193 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
1194 info->icache_data[0],
1195 info->icache_data[1],
1196 info->icache_data[2],
1197 info->icache_data[3]);
1198 printk("%s" "ERROR(%d): I-cache INSN4[%016lx] INSN5[%016lx] INSN6[%016lx] INSN7[%016lx]\n",
1199 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
1200 info->icache_data[4],
1201 info->icache_data[5],
1202 info->icache_data[6],
1203 info->icache_data[7]);
1204 printk("%s" "ERROR(%d): E-cache idx[%x] tag[%016lx]\n",
1205 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
1206 (int) info->ecache_index, info->ecache_tag);
1207 printk("%s" "ERROR(%d): E-cache data0[%016lx] data1[%016lx] data2[%016lx] data3[%016lx]\n",
1208 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
1209 info->ecache_data[0],
1210 info->ecache_data[1],
1211 info->ecache_data[2],
1212 info->ecache_data[3]);
1213
1214 afsr = (afsr & ~hipri) & cheetah_afsr_errors;
1215 while (afsr != 0UL) {
1216 unsigned long bit = cheetah_get_hipri(afsr);
1217
1218 printk("%s" "ERROR: Multiple-error (%016lx) \"%s\"\n",
1219 (recoverable ? KERN_WARNING : KERN_CRIT),
1220 bit, cheetah_get_string(bit));
1221
1222 afsr &= ~bit;
1223 }
1224
1225 if (!recoverable)
1226 printk(KERN_CRIT "ERROR: This condition is not recoverable.\n");
1227}
1228
1229static int cheetah_recheck_errors(struct cheetah_err_info *logp)
1230{
1231 unsigned long afsr, afar;
1232 int ret = 0;
1233
1234 __asm__ __volatile__("ldxa [%%g0] %1, %0\n\t"
1235 : "=r" (afsr)
1236 : "i" (ASI_AFSR));
1237 if ((afsr & cheetah_afsr_errors) != 0) {
1238 if (logp != NULL) {
1239 __asm__ __volatile__("ldxa [%%g0] %1, %0\n\t"
1240 : "=r" (afar)
1241 : "i" (ASI_AFAR));
1242 logp->afsr = afsr;
1243 logp->afar = afar;
1244 }
1245 ret = 1;
1246 }
1247 __asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
1248 "membar #Sync\n\t"
1249 : : "r" (afsr), "i" (ASI_AFSR));
1250
1251 return ret;
1252}
1253
1254void cheetah_fecc_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar)
1255{
1256 struct cheetah_err_info local_snapshot, *p;
1257 int recoverable;
1258
1259 /* Flush E-cache */
1260 cheetah_flush_ecache();
1261
1262 p = cheetah_get_error_log(afsr);
1263 if (!p) {
1264 prom_printf("ERROR: Early Fast-ECC error afsr[%016lx] afar[%016lx]\n",
1265 afsr, afar);
1266 prom_printf("ERROR: CPU(%d) TPC[%016lx] TNPC[%016lx] TSTATE[%016lx]\n",
1267 smp_processor_id(), regs->tpc, regs->tnpc, regs->tstate);
1268 prom_halt();
1269 }
1270
1271 /* Grab snapshot of logged error. */
1272 memcpy(&local_snapshot, p, sizeof(local_snapshot));
1273
1274 /* If the current trap snapshot does not match what the
1275 * trap handler passed along into our args, big trouble.
1276 * In such a case, mark the local copy as invalid.
1277 *
1278 * Else, it matches and we mark the afsr in the non-local
1279 * copy as invalid so we may log new error traps there.
1280 */
1281 if (p->afsr != afsr || p->afar != afar)
1282 local_snapshot.afsr = CHAFSR_INVALID;
1283 else
1284 p->afsr = CHAFSR_INVALID;
1285
1286 cheetah_flush_icache();
1287 cheetah_flush_dcache();
1288
1289 /* Re-enable I-cache/D-cache */
1290 __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
1291 "or %%g1, %1, %%g1\n\t"
1292 "stxa %%g1, [%%g0] %0\n\t"
1293 "membar #Sync"
1294 : /* no outputs */
1295 : "i" (ASI_DCU_CONTROL_REG),
1296 "i" (DCU_DC | DCU_IC)
1297 : "g1");
1298
1299 /* Re-enable error reporting */
1300 __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
1301 "or %%g1, %1, %%g1\n\t"
1302 "stxa %%g1, [%%g0] %0\n\t"
1303 "membar #Sync"
1304 : /* no outputs */
1305 : "i" (ASI_ESTATE_ERROR_EN),
1306 "i" (ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN)
1307 : "g1");
1308
1309 /* Decide if we can continue after handling this trap and
1310 * logging the error.
1311 */
1312 recoverable = 1;
1313 if (afsr & (CHAFSR_PERR | CHAFSR_IERR | CHAFSR_ISAP))
1314 recoverable = 0;
1315
1316 /* Re-check AFSR/AFAR. What we are looking for here is whether a new
1317 * error was logged while we had error reporting traps disabled.
1318 */
1319 if (cheetah_recheck_errors(&local_snapshot)) {
1320 unsigned long new_afsr = local_snapshot.afsr;
1321
1322 /* If we got a new asynchronous error, die... */
1323 if (new_afsr & (CHAFSR_EMU | CHAFSR_EDU |
1324 CHAFSR_WDU | CHAFSR_CPU |
1325 CHAFSR_IVU | CHAFSR_UE |
1326 CHAFSR_BERR | CHAFSR_TO))
1327 recoverable = 0;
1328 }
1329
1330 /* Log errors. */
1331 cheetah_log_errors(regs, &local_snapshot, afsr, afar, recoverable);
1332
1333 if (!recoverable)
1334 panic("Irrecoverable Fast-ECC error trap.\n");
1335
1336 /* Flush E-cache to kick the error trap handlers out. */
1337 cheetah_flush_ecache();
1338}
1339
1340/* Try to fix a correctable error by pushing the line out from
1341 * the E-cache. Recheck error reporting registers to see if the
1342 * problem is intermittent.
1343 */
1344static int cheetah_fix_ce(unsigned long physaddr)
1345{
1346 unsigned long orig_estate;
1347 unsigned long alias1, alias2;
1348 int ret;
1349
1350 /* Make sure correctable error traps are disabled. */
1351 __asm__ __volatile__("ldxa [%%g0] %2, %0\n\t"
1352 "andn %0, %1, %%g1\n\t"
1353 "stxa %%g1, [%%g0] %2\n\t"
1354 "membar #Sync"
1355 : "=&r" (orig_estate)
1356 : "i" (ESTATE_ERROR_CEEN),
1357 "i" (ASI_ESTATE_ERROR_EN)
1358 : "g1");
1359
1360 /* We calculate alias addresses that will force the
1361 * cache line in question out of the E-cache. Then
1362 * we bring it back in with an atomic instruction so
1363 * that we get it in some modified/exclusive state,
1364 * then we displace it again to try and get proper ECC
1365 * pushed back into the system.
1366 */
1367 physaddr &= ~(8UL - 1UL);
1368 alias1 = (ecache_flush_physbase +
1369 (physaddr & ((ecache_flush_size >> 1) - 1)));
1370 alias2 = alias1 + (ecache_flush_size >> 1);
1371 __asm__ __volatile__("ldxa [%0] %3, %%g0\n\t"
1372 "ldxa [%1] %3, %%g0\n\t"
1373 "casxa [%2] %3, %%g0, %%g0\n\t"
1374 "ldxa [%0] %3, %%g0\n\t"
1375 "ldxa [%1] %3, %%g0\n\t"
1376 "membar #Sync"
1377 : /* no outputs */
1378 : "r" (alias1), "r" (alias2),
1379 "r" (physaddr), "i" (ASI_PHYS_USE_EC));
1380
1381 /* Did that trigger another error? */
1382 if (cheetah_recheck_errors(NULL)) {
1383 /* Try one more time. */
1384 __asm__ __volatile__("ldxa [%0] %1, %%g0\n\t"
1385 "membar #Sync"
1386 : : "r" (physaddr), "i" (ASI_PHYS_USE_EC));
1387 if (cheetah_recheck_errors(NULL))
1388 ret = 2;
1389 else
1390 ret = 1;
1391 } else {
1392 /* No new error, intermittent problem. */
1393 ret = 0;
1394 }
1395
1396 /* Restore error enables. */
1397 __asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
1398 "membar #Sync"
1399 : : "r" (orig_estate), "i" (ASI_ESTATE_ERROR_EN));
1400
1401 return ret;
1402}
1403
1404/* Return non-zero if PADDR is a valid physical memory address. */
1405static int cheetah_check_main_memory(unsigned long paddr)
1406{
1407 unsigned long vaddr = PAGE_OFFSET + paddr;
1408
1409 if (vaddr > (unsigned long) high_memory)
1410 return 0;
1411
1412 return kern_addr_valid(vaddr);
1413}
1414
1415void cheetah_cee_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar)
1416{
1417 struct cheetah_err_info local_snapshot, *p;
1418 int recoverable, is_memory;
1419
1420 p = cheetah_get_error_log(afsr);
1421 if (!p) {
1422 prom_printf("ERROR: Early CEE error afsr[%016lx] afar[%016lx]\n",
1423 afsr, afar);
1424 prom_printf("ERROR: CPU(%d) TPC[%016lx] TNPC[%016lx] TSTATE[%016lx]\n",
1425 smp_processor_id(), regs->tpc, regs->tnpc, regs->tstate);
1426 prom_halt();
1427 }
1428
1429 /* Grab snapshot of logged error. */
1430 memcpy(&local_snapshot, p, sizeof(local_snapshot));
1431
1432 /* If the current trap snapshot does not match what the
1433 * trap handler passed along into our args, big trouble.
1434 * In such a case, mark the local copy as invalid.
1435 *
1436 * Else, it matches and we mark the afsr in the non-local
1437 * copy as invalid so we may log new error traps there.
1438 */
1439 if (p->afsr != afsr || p->afar != afar)
1440 local_snapshot.afsr = CHAFSR_INVALID;
1441 else
1442 p->afsr = CHAFSR_INVALID;
1443
1444 is_memory = cheetah_check_main_memory(afar);
1445
1446 if (is_memory && (afsr & CHAFSR_CE) != 0UL) {
1447 /* XXX Might want to log the results of this operation
1448 * XXX somewhere... -DaveM
1449 */
1450 cheetah_fix_ce(afar);
1451 }
1452
1453 {
1454 int flush_all, flush_line;
1455
1456 flush_all = flush_line = 0;
1457 if ((afsr & CHAFSR_EDC) != 0UL) {
1458 if ((afsr & cheetah_afsr_errors) == CHAFSR_EDC)
1459 flush_line = 1;
1460 else
1461 flush_all = 1;
1462 } else if ((afsr & CHAFSR_CPC) != 0UL) {
1463 if ((afsr & cheetah_afsr_errors) == CHAFSR_CPC)
1464 flush_line = 1;
1465 else
1466 flush_all = 1;
1467 }
1468
1469 /* Trap handler only disabled I-cache, flush it. */
1470 cheetah_flush_icache();
1471
1472 /* Re-enable I-cache */
1473 __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
1474 "or %%g1, %1, %%g1\n\t"
1475 "stxa %%g1, [%%g0] %0\n\t"
1476 "membar #Sync"
1477 : /* no outputs */
1478 : "i" (ASI_DCU_CONTROL_REG),
1479 "i" (DCU_IC)
1480 : "g1");
1481
1482 if (flush_all)
1483 cheetah_flush_ecache();
1484 else if (flush_line)
1485 cheetah_flush_ecache_line(afar);
1486 }
1487
1488 /* Re-enable error reporting */
1489 __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
1490 "or %%g1, %1, %%g1\n\t"
1491 "stxa %%g1, [%%g0] %0\n\t"
1492 "membar #Sync"
1493 : /* no outputs */
1494 : "i" (ASI_ESTATE_ERROR_EN),
1495 "i" (ESTATE_ERROR_CEEN)
1496 : "g1");
1497
1498 /* Decide if we can continue after handling this trap and
1499 * logging the error.
1500 */
1501 recoverable = 1;
1502 if (afsr & (CHAFSR_PERR | CHAFSR_IERR | CHAFSR_ISAP))
1503 recoverable = 0;
1504
1505 /* Re-check AFSR/AFAR */
1506 (void) cheetah_recheck_errors(&local_snapshot);
1507
1508 /* Log errors. */
1509 cheetah_log_errors(regs, &local_snapshot, afsr, afar, recoverable);
1510
1511 if (!recoverable)
1512 panic("Irrecoverable Correctable-ECC error trap.\n");
1513}
1514
1515void cheetah_deferred_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar)
1516{
1517 struct cheetah_err_info local_snapshot, *p;
1518 int recoverable, is_memory;
1519
1520#ifdef CONFIG_PCI
1521 /* Check for the special PCI poke sequence. */
1522 if (pci_poke_in_progress && pci_poke_cpu == smp_processor_id()) {
1523 cheetah_flush_icache();
1524 cheetah_flush_dcache();
1525
1526 /* Re-enable I-cache/D-cache */
1527 __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
1528 "or %%g1, %1, %%g1\n\t"
1529 "stxa %%g1, [%%g0] %0\n\t"
1530 "membar #Sync"
1531 : /* no outputs */
1532 : "i" (ASI_DCU_CONTROL_REG),
1533 "i" (DCU_DC | DCU_IC)
1534 : "g1");
1535
1536 /* Re-enable error reporting */
1537 __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
1538 "or %%g1, %1, %%g1\n\t"
1539 "stxa %%g1, [%%g0] %0\n\t"
1540 "membar #Sync"
1541 : /* no outputs */
1542 : "i" (ASI_ESTATE_ERROR_EN),
1543 "i" (ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN)
1544 : "g1");
1545
1546 (void) cheetah_recheck_errors(NULL);
1547
1548 pci_poke_faulted = 1;
1549 regs->tpc += 4;
1550 regs->tnpc = regs->tpc + 4;
1551 return;
1552 }
1553#endif
1554
1555 p = cheetah_get_error_log(afsr);
1556 if (!p) {
1557 prom_printf("ERROR: Early deferred error afsr[%016lx] afar[%016lx]\n",
1558 afsr, afar);
1559 prom_printf("ERROR: CPU(%d) TPC[%016lx] TNPC[%016lx] TSTATE[%016lx]\n",
1560 smp_processor_id(), regs->tpc, regs->tnpc, regs->tstate);
1561 prom_halt();
1562 }
1563
1564 /* Grab snapshot of logged error. */
1565 memcpy(&local_snapshot, p, sizeof(local_snapshot));
1566
1567 /* If the current trap snapshot does not match what the
1568 * trap handler passed along into our args, big trouble.
1569 * In such a case, mark the local copy as invalid.
1570 *
1571 * Else, it matches and we mark the afsr in the non-local
1572 * copy as invalid so we may log new error traps there.
1573 */
1574 if (p->afsr != afsr || p->afar != afar)
1575 local_snapshot.afsr = CHAFSR_INVALID;
1576 else
1577 p->afsr = CHAFSR_INVALID;
1578
1579 is_memory = cheetah_check_main_memory(afar);
1580
1581 {
1582 int flush_all, flush_line;
1583
1584 flush_all = flush_line = 0;
1585 if ((afsr & CHAFSR_EDU) != 0UL) {
1586 if ((afsr & cheetah_afsr_errors) == CHAFSR_EDU)
1587 flush_line = 1;
1588 else
1589 flush_all = 1;
1590 } else if ((afsr & CHAFSR_BERR) != 0UL) {
1591 if ((afsr & cheetah_afsr_errors) == CHAFSR_BERR)
1592 flush_line = 1;
1593 else
1594 flush_all = 1;
1595 }
1596
1597 cheetah_flush_icache();
1598 cheetah_flush_dcache();
1599
1600 /* Re-enable I/D caches */
1601 __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
1602 "or %%g1, %1, %%g1\n\t"
1603 "stxa %%g1, [%%g0] %0\n\t"
1604 "membar #Sync"
1605 : /* no outputs */
1606 : "i" (ASI_DCU_CONTROL_REG),
1607 "i" (DCU_IC | DCU_DC)
1608 : "g1");
1609
1610 if (flush_all)
1611 cheetah_flush_ecache();
1612 else if (flush_line)
1613 cheetah_flush_ecache_line(afar);
1614 }
1615
1616 /* Re-enable error reporting */
1617 __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
1618 "or %%g1, %1, %%g1\n\t"
1619 "stxa %%g1, [%%g0] %0\n\t"
1620 "membar #Sync"
1621 : /* no outputs */
1622 : "i" (ASI_ESTATE_ERROR_EN),
1623 "i" (ESTATE_ERROR_NCEEN | ESTATE_ERROR_CEEN)
1624 : "g1");
1625
1626 /* Decide if we can continue after handling this trap and
1627 * logging the error.
1628 */
1629 recoverable = 1;
1630 if (afsr & (CHAFSR_PERR | CHAFSR_IERR | CHAFSR_ISAP))
1631 recoverable = 0;
1632
1633 /* Re-check AFSR/AFAR. What we are looking for here is whether a new
1634 * error was logged while we had error reporting traps disabled.
1635 */
1636 if (cheetah_recheck_errors(&local_snapshot)) {
1637 unsigned long new_afsr = local_snapshot.afsr;
1638
1639 /* If we got a new asynchronous error, die... */
1640 if (new_afsr & (CHAFSR_EMU | CHAFSR_EDU |
1641 CHAFSR_WDU | CHAFSR_CPU |
1642 CHAFSR_IVU | CHAFSR_UE |
1643 CHAFSR_BERR | CHAFSR_TO))
1644 recoverable = 0;
1645 }
1646
1647 /* Log errors. */
1648 cheetah_log_errors(regs, &local_snapshot, afsr, afar, recoverable);
1649
1650 /* "Recoverable" here means we try to yank the page from ever
1651 * being newly used again. This depends upon a few things:
1652 * 1) Must be main memory, and AFAR must be valid.
1653 * 2) If we trapped from user, OK.
1654 * 3) Else, if we trapped from kernel we must find exception
1655 * table entry (ie. we have to have been accessing user
1656 * space).
1657 *
1658 * If AFAR is not in main memory, or we trapped from kernel
1659 * and cannot find an exception table entry, it is unacceptable
1660 * to try and continue.
1661 */
1662 if (recoverable && is_memory) {
1663 if ((regs->tstate & TSTATE_PRIV) == 0UL) {
1664 /* OK, usermode access. */
1665 recoverable = 1;
1666 } else {
1667 const struct exception_table_entry *entry;
1668
1669 entry = search_exception_tables(regs->tpc);
1670 if (entry) {
1671 /* OK, kernel access to userspace. */
1672 recoverable = 1;
1673
1674 } else {
1675 /* BAD, privileged state is corrupted. */
1676 recoverable = 0;
1677 }
1678
1679 if (recoverable) {
1680 if (pfn_valid(afar >> PAGE_SHIFT))
1681 get_page(pfn_to_page(afar >> PAGE_SHIFT));
1682 else
1683 recoverable = 0;
1684
1685 /* Only perform fixup if we still have a
1686 * recoverable condition.
1687 */
1688 if (recoverable) {
1689 regs->tpc = entry->fixup;
1690 regs->tnpc = regs->tpc + 4;
1691 }
1692 }
1693 }
1694 } else {
1695 recoverable = 0;
1696 }
1697
1698 if (!recoverable)
1699 panic("Irrecoverable deferred error trap.\n");
1700}
1701
1702/* Handle a D/I cache parity error trap. TYPE is encoded as:
1703 *
1704 * Bit0: 0=dcache,1=icache
1705 * Bit1: 0=recoverable,1=unrecoverable
1706 *
1707 * The hardware has disabled both the I-cache and D-cache in
1708 * the %dcr register.
1709 */
1710void cheetah_plus_parity_error(int type, struct pt_regs *regs)
1711{
1712 if (type & 0x1)
1713 __cheetah_flush_icache();
1714 else
1715 cheetah_plus_zap_dcache_parity();
1716 cheetah_flush_dcache();
1717
1718 /* Re-enable I-cache/D-cache */
1719 __asm__ __volatile__("ldxa [%%g0] %0, %%g1\n\t"
1720 "or %%g1, %1, %%g1\n\t"
1721 "stxa %%g1, [%%g0] %0\n\t"
1722 "membar #Sync"
1723 : /* no outputs */
1724 : "i" (ASI_DCU_CONTROL_REG),
1725 "i" (DCU_DC | DCU_IC)
1726 : "g1");
1727
1728 if (type & 0x2) {
1729 printk(KERN_EMERG "CPU[%d]: Cheetah+ %c-cache parity error at TPC[%016lx]\n",
1730 smp_processor_id(),
1731 (type & 0x1) ? 'I' : 'D',
1732 regs->tpc);
1733 printk(KERN_EMERG "TPC<%pS>\n", (void *) regs->tpc);
1734 panic("Irrecoverable Cheetah+ parity error.");
1735 }
1736
1737 printk(KERN_WARNING "CPU[%d]: Cheetah+ %c-cache parity error at TPC[%016lx]\n",
1738 smp_processor_id(),
1739 (type & 0x1) ? 'I' : 'D',
1740 regs->tpc);
1741 printk(KERN_WARNING "TPC<%pS>\n", (void *) regs->tpc);
1742}
1743
1744struct sun4v_error_entry {
1745 u64 err_handle;
1746 u64 err_stick;
1747
1748 u32 err_type;
1749#define SUN4V_ERR_TYPE_UNDEFINED 0
1750#define SUN4V_ERR_TYPE_UNCORRECTED_RES 1
1751#define SUN4V_ERR_TYPE_PRECISE_NONRES 2
1752#define SUN4V_ERR_TYPE_DEFERRED_NONRES 3
1753#define SUN4V_ERR_TYPE_WARNING_RES 4
1754
1755 u32 err_attrs;
1756#define SUN4V_ERR_ATTRS_PROCESSOR 0x00000001
1757#define SUN4V_ERR_ATTRS_MEMORY 0x00000002
1758#define SUN4V_ERR_ATTRS_PIO 0x00000004
1759#define SUN4V_ERR_ATTRS_INT_REGISTERS 0x00000008
1760#define SUN4V_ERR_ATTRS_FPU_REGISTERS 0x00000010
1761#define SUN4V_ERR_ATTRS_USER_MODE 0x01000000
1762#define SUN4V_ERR_ATTRS_PRIV_MODE 0x02000000
1763#define SUN4V_ERR_ATTRS_RES_QUEUE_FULL 0x80000000
1764
1765 u64 err_raddr;
1766 u32 err_size;
1767 u16 err_cpu;
1768 u16 err_pad;
1769};
1770
1771static atomic_t sun4v_resum_oflow_cnt = ATOMIC_INIT(0);
1772static atomic_t sun4v_nonresum_oflow_cnt = ATOMIC_INIT(0);
1773
1774static const char *sun4v_err_type_to_str(u32 type)
1775{
1776 switch (type) {
1777 case SUN4V_ERR_TYPE_UNDEFINED:
1778 return "undefined";
1779 case SUN4V_ERR_TYPE_UNCORRECTED_RES:
1780 return "uncorrected resumable";
1781 case SUN4V_ERR_TYPE_PRECISE_NONRES:
1782 return "precise nonresumable";
1783 case SUN4V_ERR_TYPE_DEFERRED_NONRES:
1784 return "deferred nonresumable";
1785 case SUN4V_ERR_TYPE_WARNING_RES:
1786 return "warning resumable";
1787 default:
1788 return "unknown";
1789 };
1790}
1791
1792static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent, int cpu, const char *pfx, atomic_t *ocnt)
1793{
1794 int cnt;
1795
1796 printk("%s: Reporting on cpu %d\n", pfx, cpu);
1797 printk("%s: err_handle[%lx] err_stick[%lx] err_type[%08x:%s]\n",
1798 pfx,
1799 ent->err_handle, ent->err_stick,
1800 ent->err_type,
1801 sun4v_err_type_to_str(ent->err_type));
1802 printk("%s: err_attrs[%08x:%s %s %s %s %s %s %s %s]\n",
1803 pfx,
1804 ent->err_attrs,
1805 ((ent->err_attrs & SUN4V_ERR_ATTRS_PROCESSOR) ?
1806 "processor" : ""),
1807 ((ent->err_attrs & SUN4V_ERR_ATTRS_MEMORY) ?
1808 "memory" : ""),
1809 ((ent->err_attrs & SUN4V_ERR_ATTRS_PIO) ?
1810 "pio" : ""),
1811 ((ent->err_attrs & SUN4V_ERR_ATTRS_INT_REGISTERS) ?
1812 "integer-regs" : ""),
1813 ((ent->err_attrs & SUN4V_ERR_ATTRS_FPU_REGISTERS) ?
1814 "fpu-regs" : ""),
1815 ((ent->err_attrs & SUN4V_ERR_ATTRS_USER_MODE) ?
1816 "user" : ""),
1817 ((ent->err_attrs & SUN4V_ERR_ATTRS_PRIV_MODE) ?
1818 "privileged" : ""),
1819 ((ent->err_attrs & SUN4V_ERR_ATTRS_RES_QUEUE_FULL) ?
1820 "queue-full" : ""));
1821 printk("%s: err_raddr[%016lx] err_size[%u] err_cpu[%u]\n",
1822 pfx,
1823 ent->err_raddr, ent->err_size, ent->err_cpu);
1824
1825 show_regs(regs);
1826
1827 if ((cnt = atomic_read(ocnt)) != 0) {
1828 atomic_set(ocnt, 0);
1829 wmb();
1830 printk("%s: Queue overflowed %d times.\n",
1831 pfx, cnt);
1832 }
1833}
1834
1835/* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate.
1836 * Log the event and clear the first word of the entry.
1837 */
1838void sun4v_resum_error(struct pt_regs *regs, unsigned long offset)
1839{
1840 struct sun4v_error_entry *ent, local_copy;
1841 struct trap_per_cpu *tb;
1842 unsigned long paddr;
1843 int cpu;
1844
1845 cpu = get_cpu();
1846
1847 tb = &trap_block[cpu];
1848 paddr = tb->resum_kernel_buf_pa + offset;
1849 ent = __va(paddr);
1850
1851 memcpy(&local_copy, ent, sizeof(struct sun4v_error_entry));
1852
1853 /* We have a local copy now, so release the entry. */
1854 ent->err_handle = 0;
1855 wmb();
1856
1857 put_cpu();
1858
1859 if (ent->err_type == SUN4V_ERR_TYPE_WARNING_RES) {
1860 /* If err_type is 0x4, it's a powerdown request. Do
1861 * not do the usual resumable error log because that
1862 * makes it look like some abnormal error.
1863 */
1864 printk(KERN_INFO "Power down request...\n");
1865 kill_cad_pid(SIGINT, 1);
1866 return;
1867 }
1868
1869 sun4v_log_error(regs, &local_copy, cpu,
1870 KERN_ERR "RESUMABLE ERROR",
1871 &sun4v_resum_oflow_cnt);
1872}
1873
1874/* If we try to printk() we'll probably make matters worse, by trying
1875 * to retake locks this cpu already holds or causing more errors. So
1876 * just bump a counter, and we'll report these counter bumps above.
1877 */
1878void sun4v_resum_overflow(struct pt_regs *regs)
1879{
1880 atomic_inc(&sun4v_resum_oflow_cnt);
1881}
1882
1883/* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate.
1884 * Log the event, clear the first word of the entry, and die.
1885 */
1886void sun4v_nonresum_error(struct pt_regs *regs, unsigned long offset)
1887{
1888 struct sun4v_error_entry *ent, local_copy;
1889 struct trap_per_cpu *tb;
1890 unsigned long paddr;
1891 int cpu;
1892
1893 cpu = get_cpu();
1894
1895 tb = &trap_block[cpu];
1896 paddr = tb->nonresum_kernel_buf_pa + offset;
1897 ent = __va(paddr);
1898
1899 memcpy(&local_copy, ent, sizeof(struct sun4v_error_entry));
1900
1901 /* We have a local copy now, so release the entry. */
1902 ent->err_handle = 0;
1903 wmb();
1904
1905 put_cpu();
1906
1907#ifdef CONFIG_PCI
1908 /* Check for the special PCI poke sequence. */
1909 if (pci_poke_in_progress && pci_poke_cpu == cpu) {
1910 pci_poke_faulted = 1;
1911 regs->tpc += 4;
1912 regs->tnpc = regs->tpc + 4;
1913 return;
1914 }
1915#endif
1916
1917 sun4v_log_error(regs, &local_copy, cpu,
1918 KERN_EMERG "NON-RESUMABLE ERROR",
1919 &sun4v_nonresum_oflow_cnt);
1920
1921 panic("Non-resumable error.");
1922}
1923
1924/* If we try to printk() we'll probably make matters worse, by trying
1925 * to retake locks this cpu already holds or causing more errors. So
1926 * just bump a counter, and we'll report these counter bumps above.
1927 */
1928void sun4v_nonresum_overflow(struct pt_regs *regs)
1929{
1930 /* XXX Actually even this can make not that much sense. Perhaps
1931 * XXX we should just pull the plug and panic directly from here?
1932 */
1933 atomic_inc(&sun4v_nonresum_oflow_cnt);
1934}
1935
1936unsigned long sun4v_err_itlb_vaddr;
1937unsigned long sun4v_err_itlb_ctx;
1938unsigned long sun4v_err_itlb_pte;
1939unsigned long sun4v_err_itlb_error;
1940
1941void sun4v_itlb_error_report(struct pt_regs *regs, int tl)
1942{
1943 if (tl > 1)
1944 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
1945
1946 printk(KERN_EMERG "SUN4V-ITLB: Error at TPC[%lx], tl %d\n",
1947 regs->tpc, tl);
1948 printk(KERN_EMERG "SUN4V-ITLB: TPC<%pS>\n", (void *) regs->tpc);
1949 printk(KERN_EMERG "SUN4V-ITLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
1950 printk(KERN_EMERG "SUN4V-ITLB: O7<%pS>\n",
1951 (void *) regs->u_regs[UREG_I7]);
1952 printk(KERN_EMERG "SUN4V-ITLB: vaddr[%lx] ctx[%lx] "
1953 "pte[%lx] error[%lx]\n",
1954 sun4v_err_itlb_vaddr, sun4v_err_itlb_ctx,
1955 sun4v_err_itlb_pte, sun4v_err_itlb_error);
1956
1957 prom_halt();
1958}
1959
1960unsigned long sun4v_err_dtlb_vaddr;
1961unsigned long sun4v_err_dtlb_ctx;
1962unsigned long sun4v_err_dtlb_pte;
1963unsigned long sun4v_err_dtlb_error;
1964
1965void sun4v_dtlb_error_report(struct pt_regs *regs, int tl)
1966{
1967 if (tl > 1)
1968 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
1969
1970 printk(KERN_EMERG "SUN4V-DTLB: Error at TPC[%lx], tl %d\n",
1971 regs->tpc, tl);
1972 printk(KERN_EMERG "SUN4V-DTLB: TPC<%pS>\n", (void *) regs->tpc);
1973 printk(KERN_EMERG "SUN4V-DTLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
1974 printk(KERN_EMERG "SUN4V-DTLB: O7<%pS>\n",
1975 (void *) regs->u_regs[UREG_I7]);
1976 printk(KERN_EMERG "SUN4V-DTLB: vaddr[%lx] ctx[%lx] "
1977 "pte[%lx] error[%lx]\n",
1978 sun4v_err_dtlb_vaddr, sun4v_err_dtlb_ctx,
1979 sun4v_err_dtlb_pte, sun4v_err_dtlb_error);
1980
1981 prom_halt();
1982}
1983
1984void hypervisor_tlbop_error(unsigned long err, unsigned long op)
1985{
1986 printk(KERN_CRIT "SUN4V: TLB hv call error %lu for op %lu\n",
1987 err, op);
1988}
1989
1990void hypervisor_tlbop_error_xcall(unsigned long err, unsigned long op)
1991{
1992 printk(KERN_CRIT "SUN4V: XCALL TLB hv call error %lu for op %lu\n",
1993 err, op);
1994}
1995
1996void do_fpe_common(struct pt_regs *regs)
1997{
1998 if (regs->tstate & TSTATE_PRIV) {
1999 regs->tpc = regs->tnpc;
2000 regs->tnpc += 4;
2001 } else {
2002 unsigned long fsr = current_thread_info()->xfsr[0];
2003 siginfo_t info;
2004
2005 if (test_thread_flag(TIF_32BIT)) {
2006 regs->tpc &= 0xffffffff;
2007 regs->tnpc &= 0xffffffff;
2008 }
2009 info.si_signo = SIGFPE;
2010 info.si_errno = 0;
2011 info.si_addr = (void __user *)regs->tpc;
2012 info.si_trapno = 0;
2013 info.si_code = __SI_FAULT;
2014 if ((fsr & 0x1c000) == (1 << 14)) {
2015 if (fsr & 0x10)
2016 info.si_code = FPE_FLTINV;
2017 else if (fsr & 0x08)
2018 info.si_code = FPE_FLTOVF;
2019 else if (fsr & 0x04)
2020 info.si_code = FPE_FLTUND;
2021 else if (fsr & 0x02)
2022 info.si_code = FPE_FLTDIV;
2023 else if (fsr & 0x01)
2024 info.si_code = FPE_FLTRES;
2025 }
2026 force_sig_info(SIGFPE, &info, current);
2027 }
2028}
2029
2030void do_fpieee(struct pt_regs *regs)
2031{
2032 if (notify_die(DIE_TRAP, "fpu exception ieee", regs,
2033 0, 0x24, SIGFPE) == NOTIFY_STOP)
2034 return;
2035
2036 do_fpe_common(regs);
2037}
2038
2039extern int do_mathemu(struct pt_regs *, struct fpustate *);
2040
2041void do_fpother(struct pt_regs *regs)
2042{
2043 struct fpustate *f = FPUSTATE;
2044 int ret = 0;
2045
2046 if (notify_die(DIE_TRAP, "fpu exception other", regs,
2047 0, 0x25, SIGFPE) == NOTIFY_STOP)
2048 return;
2049
2050 switch ((current_thread_info()->xfsr[0] & 0x1c000)) {
2051 case (2 << 14): /* unfinished_FPop */
2052 case (3 << 14): /* unimplemented_FPop */
2053 ret = do_mathemu(regs, f);
2054 break;
2055 }
2056 if (ret)
2057 return;
2058 do_fpe_common(regs);
2059}
2060
2061void do_tof(struct pt_regs *regs)
2062{
2063 siginfo_t info;
2064
2065 if (notify_die(DIE_TRAP, "tagged arithmetic overflow", regs,
2066 0, 0x26, SIGEMT) == NOTIFY_STOP)
2067 return;
2068
2069 if (regs->tstate & TSTATE_PRIV)
2070 die_if_kernel("Penguin overflow trap from kernel mode", regs);
2071 if (test_thread_flag(TIF_32BIT)) {
2072 regs->tpc &= 0xffffffff;
2073 regs->tnpc &= 0xffffffff;
2074 }
2075 info.si_signo = SIGEMT;
2076 info.si_errno = 0;
2077 info.si_code = EMT_TAGOVF;
2078 info.si_addr = (void __user *)regs->tpc;
2079 info.si_trapno = 0;
2080 force_sig_info(SIGEMT, &info, current);
2081}
2082
2083void do_div0(struct pt_regs *regs)
2084{
2085 siginfo_t info;
2086
2087 if (notify_die(DIE_TRAP, "integer division by zero", regs,
2088 0, 0x28, SIGFPE) == NOTIFY_STOP)
2089 return;
2090
2091 if (regs->tstate & TSTATE_PRIV)
2092 die_if_kernel("TL0: Kernel divide by zero.", regs);
2093 if (test_thread_flag(TIF_32BIT)) {
2094 regs->tpc &= 0xffffffff;
2095 regs->tnpc &= 0xffffffff;
2096 }
2097 info.si_signo = SIGFPE;
2098 info.si_errno = 0;
2099 info.si_code = FPE_INTDIV;
2100 info.si_addr = (void __user *)regs->tpc;
2101 info.si_trapno = 0;
2102 force_sig_info(SIGFPE, &info, current);
2103}
2104
2105static void instruction_dump(unsigned int *pc)
2106{
2107 int i;
2108
2109 if ((((unsigned long) pc) & 3))
2110 return;
2111
2112 printk("Instruction DUMP:");
2113 for (i = -3; i < 6; i++)
2114 printk("%c%08x%c",i?' ':'<',pc[i],i?' ':'>');
2115 printk("\n");
2116}
2117
2118static void user_instruction_dump(unsigned int __user *pc)
2119{
2120 int i;
2121 unsigned int buf[9];
2122
2123 if ((((unsigned long) pc) & 3))
2124 return;
2125
2126 if (copy_from_user(buf, pc - 3, sizeof(buf)))
2127 return;
2128
2129 printk("Instruction DUMP:");
2130 for (i = 0; i < 9; i++)
2131 printk("%c%08x%c",i==3?' ':'<',buf[i],i==3?' ':'>');
2132 printk("\n");
2133}
2134
2135void show_stack(struct task_struct *tsk, unsigned long *_ksp)
2136{
2137 unsigned long fp, thread_base, ksp;
2138 struct thread_info *tp;
2139 int count = 0;
2140
2141 ksp = (unsigned long) _ksp;
2142 if (!tsk)
2143 tsk = current;
2144 tp = task_thread_info(tsk);
2145 if (ksp == 0UL) {
2146 if (tsk == current)
2147 asm("mov %%fp, %0" : "=r" (ksp));
2148 else
2149 ksp = tp->ksp;
2150 }
2151 if (tp == current_thread_info())
2152 flushw_all();
2153
2154 fp = ksp + STACK_BIAS;
2155 thread_base = (unsigned long) tp;
2156
2157 printk("Call Trace:\n");
2158 do {
2159 struct sparc_stackf *sf;
2160 struct pt_regs *regs;
2161 unsigned long pc;
2162
2163 if (!kstack_valid(tp, fp))
2164 break;
2165 sf = (struct sparc_stackf *) fp;
2166 regs = (struct pt_regs *) (sf + 1);
2167
2168 if (kstack_is_trap_frame(tp, regs)) {
2169 if (!(regs->tstate & TSTATE_PRIV))
2170 break;
2171 pc = regs->tpc;
2172 fp = regs->u_regs[UREG_I6] + STACK_BIAS;
2173 } else {
2174 pc = sf->callers_pc;
2175 fp = (unsigned long)sf->fp + STACK_BIAS;
2176 }
2177
2178 printk(" [%016lx] %pS\n", pc, (void *) pc);
2179 } while (++count < 16);
2180}
2181
2182void dump_stack(void)
2183{
2184 show_stack(current, NULL);
2185}
2186
2187EXPORT_SYMBOL(dump_stack);
2188
2189static inline int is_kernel_stack(struct task_struct *task,
2190 struct reg_window *rw)
2191{
2192 unsigned long rw_addr = (unsigned long) rw;
2193 unsigned long thread_base, thread_end;
2194
2195 if (rw_addr < PAGE_OFFSET) {
2196 if (task != &init_task)
2197 return 0;
2198 }
2199
2200 thread_base = (unsigned long) task_stack_page(task);
2201 thread_end = thread_base + sizeof(union thread_union);
2202 if (rw_addr >= thread_base &&
2203 rw_addr < thread_end &&
2204 !(rw_addr & 0x7UL))
2205 return 1;
2206
2207 return 0;
2208}
2209
2210static inline struct reg_window *kernel_stack_up(struct reg_window *rw)
2211{
2212 unsigned long fp = rw->ins[6];
2213
2214 if (!fp)
2215 return NULL;
2216
2217 return (struct reg_window *) (fp + STACK_BIAS);
2218}
2219
2220void die_if_kernel(char *str, struct pt_regs *regs)
2221{
2222 static int die_counter;
2223 int count = 0;
2224
2225 /* Amuse the user. */
2226 printk(
2227" \\|/ ____ \\|/\n"
2228" \"@'/ .. \\`@\"\n"
2229" /_| \\__/ |_\\\n"
2230" \\__U_/\n");
2231
2232 printk("%s(%d): %s [#%d]\n", current->comm, task_pid_nr(current), str, ++die_counter);
2233 notify_die(DIE_OOPS, str, regs, 0, 255, SIGSEGV);
2234 __asm__ __volatile__("flushw");
2235 show_regs(regs);
2236 add_taint(TAINT_DIE);
2237 if (regs->tstate & TSTATE_PRIV) {
2238 struct reg_window *rw = (struct reg_window *)
2239 (regs->u_regs[UREG_FP] + STACK_BIAS);
2240
2241 /* Stop the back trace when we hit userland or we
2242 * find some badly aligned kernel stack.
2243 */
2244 while (rw &&
2245 count++ < 30&&
2246 is_kernel_stack(current, rw)) {
2247 printk("Caller[%016lx]: %pS\n", rw->ins[7],
2248 (void *) rw->ins[7]);
2249
2250 rw = kernel_stack_up(rw);
2251 }
2252 instruction_dump ((unsigned int *) regs->tpc);
2253 } else {
2254 if (test_thread_flag(TIF_32BIT)) {
2255 regs->tpc &= 0xffffffff;
2256 regs->tnpc &= 0xffffffff;
2257 }
2258 user_instruction_dump ((unsigned int __user *) regs->tpc);
2259 }
2260 if (regs->tstate & TSTATE_PRIV)
2261 do_exit(SIGKILL);
2262 do_exit(SIGSEGV);
2263}
2264
2265#define VIS_OPCODE_MASK ((0x3 << 30) | (0x3f << 19))
2266#define VIS_OPCODE_VAL ((0x2 << 30) | (0x36 << 19))
2267
2268extern int handle_popc(u32 insn, struct pt_regs *regs);
2269extern int handle_ldf_stq(u32 insn, struct pt_regs *regs);
2270
2271void do_illegal_instruction(struct pt_regs *regs)
2272{
2273 unsigned long pc = regs->tpc;
2274 unsigned long tstate = regs->tstate;
2275 u32 insn;
2276 siginfo_t info;
2277
2278 if (notify_die(DIE_TRAP, "illegal instruction", regs,
2279 0, 0x10, SIGILL) == NOTIFY_STOP)
2280 return;
2281
2282 if (tstate & TSTATE_PRIV)
2283 die_if_kernel("Kernel illegal instruction", regs);
2284 if (test_thread_flag(TIF_32BIT))
2285 pc = (u32)pc;
2286 if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
2287 if ((insn & 0xc1ffc000) == 0x81700000) /* POPC */ {
2288 if (handle_popc(insn, regs))
2289 return;
2290 } else if ((insn & 0xc1580000) == 0xc1100000) /* LDQ/STQ */ {
2291 if (handle_ldf_stq(insn, regs))
2292 return;
2293 } else if (tlb_type == hypervisor) {
2294 if ((insn & VIS_OPCODE_MASK) == VIS_OPCODE_VAL) {
2295 if (!vis_emul(regs, insn))
2296 return;
2297 } else {
2298 struct fpustate *f = FPUSTATE;
2299
2300 /* XXX maybe verify XFSR bits like
2301 * XXX do_fpother() does?
2302 */
2303 if (do_mathemu(regs, f))
2304 return;
2305 }
2306 }
2307 }
2308 info.si_signo = SIGILL;
2309 info.si_errno = 0;
2310 info.si_code = ILL_ILLOPC;
2311 info.si_addr = (void __user *)pc;
2312 info.si_trapno = 0;
2313 force_sig_info(SIGILL, &info, current);
2314}
2315
2316extern void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn);
2317
2318void mem_address_unaligned(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr)
2319{
2320 siginfo_t info;
2321
2322 if (notify_die(DIE_TRAP, "memory address unaligned", regs,
2323 0, 0x34, SIGSEGV) == NOTIFY_STOP)
2324 return;
2325
2326 if (regs->tstate & TSTATE_PRIV) {
2327 kernel_unaligned_trap(regs, *((unsigned int *)regs->tpc));
2328 return;
2329 }
2330 info.si_signo = SIGBUS;
2331 info.si_errno = 0;
2332 info.si_code = BUS_ADRALN;
2333 info.si_addr = (void __user *)sfar;
2334 info.si_trapno = 0;
2335 force_sig_info(SIGBUS, &info, current);
2336}
2337
2338void sun4v_do_mna(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
2339{
2340 siginfo_t info;
2341
2342 if (notify_die(DIE_TRAP, "memory address unaligned", regs,
2343 0, 0x34, SIGSEGV) == NOTIFY_STOP)
2344 return;
2345
2346 if (regs->tstate & TSTATE_PRIV) {
2347 kernel_unaligned_trap(regs, *((unsigned int *)regs->tpc));
2348 return;
2349 }
2350 info.si_signo = SIGBUS;
2351 info.si_errno = 0;
2352 info.si_code = BUS_ADRALN;
2353 info.si_addr = (void __user *) addr;
2354 info.si_trapno = 0;
2355 force_sig_info(SIGBUS, &info, current);
2356}
2357
2358void do_privop(struct pt_regs *regs)
2359{
2360 siginfo_t info;
2361
2362 if (notify_die(DIE_TRAP, "privileged operation", regs,
2363 0, 0x11, SIGILL) == NOTIFY_STOP)
2364 return;
2365
2366 if (test_thread_flag(TIF_32BIT)) {
2367 regs->tpc &= 0xffffffff;
2368 regs->tnpc &= 0xffffffff;
2369 }
2370 info.si_signo = SIGILL;
2371 info.si_errno = 0;
2372 info.si_code = ILL_PRVOPC;
2373 info.si_addr = (void __user *)regs->tpc;
2374 info.si_trapno = 0;
2375 force_sig_info(SIGILL, &info, current);
2376}
2377
2378void do_privact(struct pt_regs *regs)
2379{
2380 do_privop(regs);
2381}
2382
2383/* Trap level 1 stuff or other traps we should never see... */
2384void do_cee(struct pt_regs *regs)
2385{
2386 die_if_kernel("TL0: Cache Error Exception", regs);
2387}
2388
2389void do_cee_tl1(struct pt_regs *regs)
2390{
2391 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2392 die_if_kernel("TL1: Cache Error Exception", regs);
2393}
2394
2395void do_dae_tl1(struct pt_regs *regs)
2396{
2397 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2398 die_if_kernel("TL1: Data Access Exception", regs);
2399}
2400
2401void do_iae_tl1(struct pt_regs *regs)
2402{
2403 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2404 die_if_kernel("TL1: Instruction Access Exception", regs);
2405}
2406
2407void do_div0_tl1(struct pt_regs *regs)
2408{
2409 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2410 die_if_kernel("TL1: DIV0 Exception", regs);
2411}
2412
2413void do_fpdis_tl1(struct pt_regs *regs)
2414{
2415 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2416 die_if_kernel("TL1: FPU Disabled", regs);
2417}
2418
2419void do_fpieee_tl1(struct pt_regs *regs)
2420{
2421 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2422 die_if_kernel("TL1: FPU IEEE Exception", regs);
2423}
2424
2425void do_fpother_tl1(struct pt_regs *regs)
2426{
2427 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2428 die_if_kernel("TL1: FPU Other Exception", regs);
2429}
2430
2431void do_ill_tl1(struct pt_regs *regs)
2432{
2433 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2434 die_if_kernel("TL1: Illegal Instruction Exception", regs);
2435}
2436
2437void do_irq_tl1(struct pt_regs *regs)
2438{
2439 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2440 die_if_kernel("TL1: IRQ Exception", regs);
2441}
2442
2443void do_lddfmna_tl1(struct pt_regs *regs)
2444{
2445 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2446 die_if_kernel("TL1: LDDF Exception", regs);
2447}
2448
2449void do_stdfmna_tl1(struct pt_regs *regs)
2450{
2451 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2452 die_if_kernel("TL1: STDF Exception", regs);
2453}
2454
2455void do_paw(struct pt_regs *regs)
2456{
2457 die_if_kernel("TL0: Phys Watchpoint Exception", regs);
2458}
2459
2460void do_paw_tl1(struct pt_regs *regs)
2461{
2462 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2463 die_if_kernel("TL1: Phys Watchpoint Exception", regs);
2464}
2465
2466void do_vaw(struct pt_regs *regs)
2467{
2468 die_if_kernel("TL0: Virt Watchpoint Exception", regs);
2469}
2470
2471void do_vaw_tl1(struct pt_regs *regs)
2472{
2473 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2474 die_if_kernel("TL1: Virt Watchpoint Exception", regs);
2475}
2476
2477void do_tof_tl1(struct pt_regs *regs)
2478{
2479 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
2480 die_if_kernel("TL1: Tag Overflow Exception", regs);
2481}
2482
2483void do_getpsr(struct pt_regs *regs)
2484{
2485 regs->u_regs[UREG_I0] = tstate_to_psr(regs->tstate);
2486 regs->tpc = regs->tnpc;
2487 regs->tnpc += 4;
2488 if (test_thread_flag(TIF_32BIT)) {
2489 regs->tpc &= 0xffffffff;
2490 regs->tnpc &= 0xffffffff;
2491 }
2492}
2493
2494struct trap_per_cpu trap_block[NR_CPUS];
2495
2496/* This can get invoked before sched_init() so play it super safe
2497 * and use hard_smp_processor_id().
2498 */
2499void notrace init_cur_cpu_trap(struct thread_info *t)
2500{
2501 int cpu = hard_smp_processor_id();
2502 struct trap_per_cpu *p = &trap_block[cpu];
2503
2504 p->thread = t;
2505 p->pgd_paddr = 0;
2506}
2507
2508extern void thread_info_offsets_are_bolixed_dave(void);
2509extern void trap_per_cpu_offsets_are_bolixed_dave(void);
2510extern void tsb_config_offsets_are_bolixed_dave(void);
2511
2512/* Only invoked on boot processor. */
2513void __init trap_init(void)
2514{
2515 /* Compile time sanity check. */
2516 if (TI_TASK != offsetof(struct thread_info, task) ||
2517 TI_FLAGS != offsetof(struct thread_info, flags) ||
2518 TI_CPU != offsetof(struct thread_info, cpu) ||
2519 TI_FPSAVED != offsetof(struct thread_info, fpsaved) ||
2520 TI_KSP != offsetof(struct thread_info, ksp) ||
2521 TI_FAULT_ADDR != offsetof(struct thread_info, fault_address) ||
2522 TI_KREGS != offsetof(struct thread_info, kregs) ||
2523 TI_UTRAPS != offsetof(struct thread_info, utraps) ||
2524 TI_EXEC_DOMAIN != offsetof(struct thread_info, exec_domain) ||
2525 TI_REG_WINDOW != offsetof(struct thread_info, reg_window) ||
2526 TI_RWIN_SPTRS != offsetof(struct thread_info, rwbuf_stkptrs) ||
2527 TI_GSR != offsetof(struct thread_info, gsr) ||
2528 TI_XFSR != offsetof(struct thread_info, xfsr) ||
2529 TI_USER_CNTD0 != offsetof(struct thread_info, user_cntd0) ||
2530 TI_USER_CNTD1 != offsetof(struct thread_info, user_cntd1) ||
2531 TI_KERN_CNTD0 != offsetof(struct thread_info, kernel_cntd0) ||
2532 TI_KERN_CNTD1 != offsetof(struct thread_info, kernel_cntd1) ||
2533 TI_PCR != offsetof(struct thread_info, pcr_reg) ||
2534 TI_PRE_COUNT != offsetof(struct thread_info, preempt_count) ||
2535 TI_NEW_CHILD != offsetof(struct thread_info, new_child) ||
2536 TI_SYS_NOERROR != offsetof(struct thread_info, syscall_noerror) ||
2537 TI_RESTART_BLOCK != offsetof(struct thread_info, restart_block) ||
2538 TI_KUNA_REGS != offsetof(struct thread_info, kern_una_regs) ||
2539 TI_KUNA_INSN != offsetof(struct thread_info, kern_una_insn) ||
2540 TI_FPREGS != offsetof(struct thread_info, fpregs) ||
2541 (TI_FPREGS & (64 - 1)))
2542 thread_info_offsets_are_bolixed_dave();
2543
2544 if (TRAP_PER_CPU_THREAD != offsetof(struct trap_per_cpu, thread) ||
2545 (TRAP_PER_CPU_PGD_PADDR !=
2546 offsetof(struct trap_per_cpu, pgd_paddr)) ||
2547 (TRAP_PER_CPU_CPU_MONDO_PA !=
2548 offsetof(struct trap_per_cpu, cpu_mondo_pa)) ||
2549 (TRAP_PER_CPU_DEV_MONDO_PA !=
2550 offsetof(struct trap_per_cpu, dev_mondo_pa)) ||
2551 (TRAP_PER_CPU_RESUM_MONDO_PA !=
2552 offsetof(struct trap_per_cpu, resum_mondo_pa)) ||
2553 (TRAP_PER_CPU_RESUM_KBUF_PA !=
2554 offsetof(struct trap_per_cpu, resum_kernel_buf_pa)) ||
2555 (TRAP_PER_CPU_NONRESUM_MONDO_PA !=
2556 offsetof(struct trap_per_cpu, nonresum_mondo_pa)) ||
2557 (TRAP_PER_CPU_NONRESUM_KBUF_PA !=
2558 offsetof(struct trap_per_cpu, nonresum_kernel_buf_pa)) ||
2559 (TRAP_PER_CPU_FAULT_INFO !=
2560 offsetof(struct trap_per_cpu, fault_info)) ||
2561 (TRAP_PER_CPU_CPU_MONDO_BLOCK_PA !=
2562 offsetof(struct trap_per_cpu, cpu_mondo_block_pa)) ||
2563 (TRAP_PER_CPU_CPU_LIST_PA !=
2564 offsetof(struct trap_per_cpu, cpu_list_pa)) ||
2565 (TRAP_PER_CPU_TSB_HUGE !=
2566 offsetof(struct trap_per_cpu, tsb_huge)) ||
2567 (TRAP_PER_CPU_TSB_HUGE_TEMP !=
2568 offsetof(struct trap_per_cpu, tsb_huge_temp)) ||
2569 (TRAP_PER_CPU_IRQ_WORKLIST_PA !=
2570 offsetof(struct trap_per_cpu, irq_worklist_pa)) ||
2571 (TRAP_PER_CPU_CPU_MONDO_QMASK !=
2572 offsetof(struct trap_per_cpu, cpu_mondo_qmask)) ||
2573 (TRAP_PER_CPU_DEV_MONDO_QMASK !=
2574 offsetof(struct trap_per_cpu, dev_mondo_qmask)) ||
2575 (TRAP_PER_CPU_RESUM_QMASK !=
2576 offsetof(struct trap_per_cpu, resum_qmask)) ||
2577 (TRAP_PER_CPU_NONRESUM_QMASK !=
2578 offsetof(struct trap_per_cpu, nonresum_qmask)))
2579 trap_per_cpu_offsets_are_bolixed_dave();
2580
2581 if ((TSB_CONFIG_TSB !=
2582 offsetof(struct tsb_config, tsb)) ||
2583 (TSB_CONFIG_RSS_LIMIT !=
2584 offsetof(struct tsb_config, tsb_rss_limit)) ||
2585 (TSB_CONFIG_NENTRIES !=
2586 offsetof(struct tsb_config, tsb_nentries)) ||
2587 (TSB_CONFIG_REG_VAL !=
2588 offsetof(struct tsb_config, tsb_reg_val)) ||
2589 (TSB_CONFIG_MAP_VADDR !=
2590 offsetof(struct tsb_config, tsb_map_vaddr)) ||
2591 (TSB_CONFIG_MAP_PTE !=
2592 offsetof(struct tsb_config, tsb_map_pte)))
2593 tsb_config_offsets_are_bolixed_dave();
2594
2595 /* Attach to the address space of init_task. On SMP we
2596 * do this in smp.c:smp_callin for other cpus.
2597 */
2598 atomic_inc(&init_mm.mm_count);
2599 current->active_mm = &init_mm;
2600}
diff --git a/arch/sparc/kernel/tsb.S b/arch/sparc/kernel/tsb.S
new file mode 100644
index 000000000000..8c91d9b29a2f
--- /dev/null
+++ b/arch/sparc/kernel/tsb.S
@@ -0,0 +1,552 @@
1/* tsb.S: Sparc64 TSB table handling.
2 *
3 * Copyright (C) 2006 David S. Miller <davem@davemloft.net>
4 */
5
6
7#include <asm/tsb.h>
8#include <asm/hypervisor.h>
9#include <asm/page.h>
10#include <asm/cpudata.h>
11#include <asm/mmu.h>
12
13 .text
14 .align 32
15
16 /* Invoked from TLB miss handler, we are in the
17 * MMU global registers and they are setup like
18 * this:
19 *
20 * %g1: TSB entry pointer
21 * %g2: available temporary
22 * %g3: FAULT_CODE_{D,I}TLB
23 * %g4: available temporary
24 * %g5: available temporary
25 * %g6: TAG TARGET
26 * %g7: available temporary, will be loaded by us with
27 * the physical address base of the linux page
28 * tables for the current address space
29 */
30tsb_miss_dtlb:
31 mov TLB_TAG_ACCESS, %g4
32 ba,pt %xcc, tsb_miss_page_table_walk
33 ldxa [%g4] ASI_DMMU, %g4
34
35tsb_miss_itlb:
36 mov TLB_TAG_ACCESS, %g4
37 ba,pt %xcc, tsb_miss_page_table_walk
38 ldxa [%g4] ASI_IMMU, %g4
39
40 /* At this point we have:
41 * %g1 -- PAGE_SIZE TSB entry address
42 * %g3 -- FAULT_CODE_{D,I}TLB
43 * %g4 -- missing virtual address
44 * %g6 -- TAG TARGET (vaddr >> 22)
45 */
46tsb_miss_page_table_walk:
47 TRAP_LOAD_TRAP_BLOCK(%g7, %g5)
48
49 /* Before committing to a full page table walk,
50 * check the huge page TSB.
51 */
52#ifdef CONFIG_HUGETLB_PAGE
53
54661: ldx [%g7 + TRAP_PER_CPU_TSB_HUGE], %g5
55 nop
56 .section .sun4v_2insn_patch, "ax"
57 .word 661b
58 mov SCRATCHPAD_UTSBREG2, %g5
59 ldxa [%g5] ASI_SCRATCHPAD, %g5
60 .previous
61
62 cmp %g5, -1
63 be,pt %xcc, 80f
64 nop
65
66 /* We need an aligned pair of registers containing 2 values
67 * which can be easily rematerialized. %g6 and %g7 foot the
68 * bill just nicely. We'll save %g6 away into %g2 for the
69 * huge page TSB TAG comparison.
70 *
71 * Perform a huge page TSB lookup.
72 */
73 mov %g6, %g2
74 and %g5, 0x7, %g6
75 mov 512, %g7
76 andn %g5, 0x7, %g5
77 sllx %g7, %g6, %g7
78 srlx %g4, HPAGE_SHIFT, %g6
79 sub %g7, 1, %g7
80 and %g6, %g7, %g6
81 sllx %g6, 4, %g6
82 add %g5, %g6, %g5
83
84 TSB_LOAD_QUAD(%g5, %g6)
85 cmp %g6, %g2
86 be,a,pt %xcc, tsb_tlb_reload
87 mov %g7, %g5
88
89 /* No match, remember the huge page TSB entry address,
90 * and restore %g6 and %g7.
91 */
92 TRAP_LOAD_TRAP_BLOCK(%g7, %g6)
93 srlx %g4, 22, %g6
9480: stx %g5, [%g7 + TRAP_PER_CPU_TSB_HUGE_TEMP]
95
96#endif
97
98 ldx [%g7 + TRAP_PER_CPU_PGD_PADDR], %g7
99
100 /* At this point we have:
101 * %g1 -- TSB entry address
102 * %g3 -- FAULT_CODE_{D,I}TLB
103 * %g4 -- missing virtual address
104 * %g6 -- TAG TARGET (vaddr >> 22)
105 * %g7 -- page table physical address
106 *
107 * We know that both the base PAGE_SIZE TSB and the HPAGE_SIZE
108 * TSB both lack a matching entry.
109 */
110tsb_miss_page_table_walk_sun4v_fastpath:
111 USER_PGTABLE_WALK_TL1(%g4, %g7, %g5, %g2, tsb_do_fault)
112
113 /* Load and check PTE. */
114 ldxa [%g5] ASI_PHYS_USE_EC, %g5
115 brgez,pn %g5, tsb_do_fault
116 nop
117
118#ifdef CONFIG_HUGETLB_PAGE
119661: sethi %uhi(_PAGE_SZALL_4U), %g7
120 sllx %g7, 32, %g7
121 .section .sun4v_2insn_patch, "ax"
122 .word 661b
123 mov _PAGE_SZALL_4V, %g7
124 nop
125 .previous
126
127 and %g5, %g7, %g2
128
129661: sethi %uhi(_PAGE_SZHUGE_4U), %g7
130 sllx %g7, 32, %g7
131 .section .sun4v_2insn_patch, "ax"
132 .word 661b
133 mov _PAGE_SZHUGE_4V, %g7
134 nop
135 .previous
136
137 cmp %g2, %g7
138 bne,pt %xcc, 60f
139 nop
140
141 /* It is a huge page, use huge page TSB entry address we
142 * calculated above.
143 */
144 TRAP_LOAD_TRAP_BLOCK(%g7, %g2)
145 ldx [%g7 + TRAP_PER_CPU_TSB_HUGE_TEMP], %g2
146 cmp %g2, -1
147 movne %xcc, %g2, %g1
14860:
149#endif
150
151 /* At this point we have:
152 * %g1 -- TSB entry address
153 * %g3 -- FAULT_CODE_{D,I}TLB
154 * %g5 -- valid PTE
155 * %g6 -- TAG TARGET (vaddr >> 22)
156 */
157tsb_reload:
158 TSB_LOCK_TAG(%g1, %g2, %g7)
159 TSB_WRITE(%g1, %g5, %g6)
160
161 /* Finally, load TLB and return from trap. */
162tsb_tlb_reload:
163 cmp %g3, FAULT_CODE_DTLB
164 bne,pn %xcc, tsb_itlb_load
165 nop
166
167tsb_dtlb_load:
168
169661: stxa %g5, [%g0] ASI_DTLB_DATA_IN
170 retry
171 .section .sun4v_2insn_patch, "ax"
172 .word 661b
173 nop
174 nop
175 .previous
176
177 /* For sun4v the ASI_DTLB_DATA_IN store and the retry
178 * instruction get nop'd out and we get here to branch
179 * to the sun4v tlb load code. The registers are setup
180 * as follows:
181 *
182 * %g4: vaddr
183 * %g5: PTE
184 * %g6: TAG
185 *
186 * The sun4v TLB load wants the PTE in %g3 so we fix that
187 * up here.
188 */
189 ba,pt %xcc, sun4v_dtlb_load
190 mov %g5, %g3
191
192tsb_itlb_load:
193 /* Executable bit must be set. */
194661: andcc %g5, _PAGE_EXEC_4U, %g0
195 .section .sun4v_1insn_patch, "ax"
196 .word 661b
197 andcc %g5, _PAGE_EXEC_4V, %g0
198 .previous
199
200 be,pn %xcc, tsb_do_fault
201 nop
202
203661: stxa %g5, [%g0] ASI_ITLB_DATA_IN
204 retry
205 .section .sun4v_2insn_patch, "ax"
206 .word 661b
207 nop
208 nop
209 .previous
210
211 /* For sun4v the ASI_ITLB_DATA_IN store and the retry
212 * instruction get nop'd out and we get here to branch
213 * to the sun4v tlb load code. The registers are setup
214 * as follows:
215 *
216 * %g4: vaddr
217 * %g5: PTE
218 * %g6: TAG
219 *
220 * The sun4v TLB load wants the PTE in %g3 so we fix that
221 * up here.
222 */
223 ba,pt %xcc, sun4v_itlb_load
224 mov %g5, %g3
225
226 /* No valid entry in the page tables, do full fault
227 * processing.
228 */
229
230 .globl tsb_do_fault
231tsb_do_fault:
232 cmp %g3, FAULT_CODE_DTLB
233
234661: rdpr %pstate, %g5
235 wrpr %g5, PSTATE_AG | PSTATE_MG, %pstate
236 .section .sun4v_2insn_patch, "ax"
237 .word 661b
238 SET_GL(1)
239 ldxa [%g0] ASI_SCRATCHPAD, %g4
240 .previous
241
242 bne,pn %xcc, tsb_do_itlb_fault
243 nop
244
245tsb_do_dtlb_fault:
246 rdpr %tl, %g3
247 cmp %g3, 1
248
249661: mov TLB_TAG_ACCESS, %g4
250 ldxa [%g4] ASI_DMMU, %g5
251 .section .sun4v_2insn_patch, "ax"
252 .word 661b
253 ldx [%g4 + HV_FAULT_D_ADDR_OFFSET], %g5
254 nop
255 .previous
256
257 be,pt %xcc, sparc64_realfault_common
258 mov FAULT_CODE_DTLB, %g4
259 ba,pt %xcc, winfix_trampoline
260 nop
261
262tsb_do_itlb_fault:
263 rdpr %tpc, %g5
264 ba,pt %xcc, sparc64_realfault_common
265 mov FAULT_CODE_ITLB, %g4
266
267 .globl sparc64_realfault_common
268sparc64_realfault_common:
269 /* fault code in %g4, fault address in %g5, etrap will
270 * preserve these two values in %l4 and %l5 respectively
271 */
272 ba,pt %xcc, etrap ! Save trap state
2731: rd %pc, %g7 ! ...
274 stb %l4, [%g6 + TI_FAULT_CODE] ! Save fault code
275 stx %l5, [%g6 + TI_FAULT_ADDR] ! Save fault address
276 call do_sparc64_fault ! Call fault handler
277 add %sp, PTREGS_OFF, %o0 ! Compute pt_regs arg
278 ba,pt %xcc, rtrap ! Restore cpu state
279 nop ! Delay slot (fill me)
280
281winfix_trampoline:
282 rdpr %tpc, %g3 ! Prepare winfixup TNPC
283 or %g3, 0x7c, %g3 ! Compute branch offset
284 wrpr %g3, %tnpc ! Write it into TNPC
285 done ! Trap return
286
287 /* Insert an entry into the TSB.
288 *
289 * %o0: TSB entry pointer (virt or phys address)
290 * %o1: tag
291 * %o2: pte
292 */
293 .align 32
294 .globl __tsb_insert
295__tsb_insert:
296 rdpr %pstate, %o5
297 wrpr %o5, PSTATE_IE, %pstate
298 TSB_LOCK_TAG(%o0, %g2, %g3)
299 TSB_WRITE(%o0, %o2, %o1)
300 wrpr %o5, %pstate
301 retl
302 nop
303 .size __tsb_insert, .-__tsb_insert
304
305 /* Flush the given TSB entry if it has the matching
306 * tag.
307 *
308 * %o0: TSB entry pointer (virt or phys address)
309 * %o1: tag
310 */
311 .align 32
312 .globl tsb_flush
313 .type tsb_flush,#function
314tsb_flush:
315 sethi %hi(TSB_TAG_LOCK_HIGH), %g2
3161: TSB_LOAD_TAG(%o0, %g1)
317 srlx %g1, 32, %o3
318 andcc %o3, %g2, %g0
319 bne,pn %icc, 1b
320 nop
321 cmp %g1, %o1
322 mov 1, %o3
323 bne,pt %xcc, 2f
324 sllx %o3, TSB_TAG_INVALID_BIT, %o3
325 TSB_CAS_TAG(%o0, %g1, %o3)
326 cmp %g1, %o3
327 bne,pn %xcc, 1b
328 nop
3292: retl
330 nop
331 .size tsb_flush, .-tsb_flush
332
333 /* Reload MMU related context switch state at
334 * schedule() time.
335 *
336 * %o0: page table physical address
337 * %o1: TSB base config pointer
338 * %o2: TSB huge config pointer, or NULL if none
339 * %o3: Hypervisor TSB descriptor physical address
340 *
341 * We have to run this whole thing with interrupts
342 * disabled so that the current cpu doesn't change
343 * due to preemption.
344 */
345 .align 32
346 .globl __tsb_context_switch
347 .type __tsb_context_switch,#function
348__tsb_context_switch:
349 rdpr %pstate, %g1
350 wrpr %g1, PSTATE_IE, %pstate
351
352 TRAP_LOAD_TRAP_BLOCK(%g2, %g3)
353
354 stx %o0, [%g2 + TRAP_PER_CPU_PGD_PADDR]
355
356 ldx [%o1 + TSB_CONFIG_REG_VAL], %o0
357 brz,pt %o2, 1f
358 mov -1, %g3
359
360 ldx [%o2 + TSB_CONFIG_REG_VAL], %g3
361
3621: stx %g3, [%g2 + TRAP_PER_CPU_TSB_HUGE]
363
364 sethi %hi(tlb_type), %g2
365 lduw [%g2 + %lo(tlb_type)], %g2
366 cmp %g2, 3
367 bne,pt %icc, 50f
368 nop
369
370 /* Hypervisor TSB switch. */
371 mov SCRATCHPAD_UTSBREG1, %o5
372 stxa %o0, [%o5] ASI_SCRATCHPAD
373 mov SCRATCHPAD_UTSBREG2, %o5
374 stxa %g3, [%o5] ASI_SCRATCHPAD
375
376 mov 2, %o0
377 cmp %g3, -1
378 move %xcc, 1, %o0
379
380 mov HV_FAST_MMU_TSB_CTXNON0, %o5
381 mov %o3, %o1
382 ta HV_FAST_TRAP
383
384 /* Finish up. */
385 ba,pt %xcc, 9f
386 nop
387
388 /* SUN4U TSB switch. */
38950: mov TSB_REG, %o5
390 stxa %o0, [%o5] ASI_DMMU
391 membar #Sync
392 stxa %o0, [%o5] ASI_IMMU
393 membar #Sync
394
3952: ldx [%o1 + TSB_CONFIG_MAP_VADDR], %o4
396 brz %o4, 9f
397 ldx [%o1 + TSB_CONFIG_MAP_PTE], %o5
398
399 sethi %hi(sparc64_highest_unlocked_tlb_ent), %g2
400 mov TLB_TAG_ACCESS, %g3
401 lduw [%g2 + %lo(sparc64_highest_unlocked_tlb_ent)], %g2
402 stxa %o4, [%g3] ASI_DMMU
403 membar #Sync
404 sllx %g2, 3, %g2
405 stxa %o5, [%g2] ASI_DTLB_DATA_ACCESS
406 membar #Sync
407
408 brz,pt %o2, 9f
409 nop
410
411 ldx [%o2 + TSB_CONFIG_MAP_VADDR], %o4
412 ldx [%o2 + TSB_CONFIG_MAP_PTE], %o5
413 mov TLB_TAG_ACCESS, %g3
414 stxa %o4, [%g3] ASI_DMMU
415 membar #Sync
416 sub %g2, (1 << 3), %g2
417 stxa %o5, [%g2] ASI_DTLB_DATA_ACCESS
418 membar #Sync
419
4209:
421 wrpr %g1, %pstate
422
423 retl
424 nop
425 .size __tsb_context_switch, .-__tsb_context_switch
426
427#define TSB_PASS_BITS ((1 << TSB_TAG_LOCK_BIT) | \
428 (1 << TSB_TAG_INVALID_BIT))
429
430 .align 32
431 .globl copy_tsb
432 .type copy_tsb,#function
433copy_tsb: /* %o0=old_tsb_base, %o1=old_tsb_size
434 * %o2=new_tsb_base, %o3=new_tsb_size
435 */
436 sethi %uhi(TSB_PASS_BITS), %g7
437 srlx %o3, 4, %o3
438 add %o0, %o1, %g1 /* end of old tsb */
439 sllx %g7, 32, %g7
440 sub %o3, 1, %o3 /* %o3 == new tsb hash mask */
441
442661: prefetcha [%o0] ASI_N, #one_read
443 .section .tsb_phys_patch, "ax"
444 .word 661b
445 prefetcha [%o0] ASI_PHYS_USE_EC, #one_read
446 .previous
447
44890: andcc %o0, (64 - 1), %g0
449 bne 1f
450 add %o0, 64, %o5
451
452661: prefetcha [%o5] ASI_N, #one_read
453 .section .tsb_phys_patch, "ax"
454 .word 661b
455 prefetcha [%o5] ASI_PHYS_USE_EC, #one_read
456 .previous
457
4581: TSB_LOAD_QUAD(%o0, %g2) /* %g2/%g3 == TSB entry */
459 andcc %g2, %g7, %g0 /* LOCK or INVALID set? */
460 bne,pn %xcc, 80f /* Skip it */
461 sllx %g2, 22, %o4 /* TAG --> VADDR */
462
463 /* This can definitely be computed faster... */
464 srlx %o0, 4, %o5 /* Build index */
465 and %o5, 511, %o5 /* Mask index */
466 sllx %o5, PAGE_SHIFT, %o5 /* Put into vaddr position */
467 or %o4, %o5, %o4 /* Full VADDR. */
468 srlx %o4, PAGE_SHIFT, %o4 /* Shift down to create index */
469 and %o4, %o3, %o4 /* Mask with new_tsb_nents-1 */
470 sllx %o4, 4, %o4 /* Shift back up into tsb ent offset */
471 TSB_STORE(%o2 + %o4, %g2) /* Store TAG */
472 add %o4, 0x8, %o4 /* Advance to TTE */
473 TSB_STORE(%o2 + %o4, %g3) /* Store TTE */
474
47580: add %o0, 16, %o0
476 cmp %o0, %g1
477 bne,pt %xcc, 90b
478 nop
479
480 retl
481 nop
482 .size copy_tsb, .-copy_tsb
483
484 /* Set the invalid bit in all TSB entries. */
485 .align 32
486 .globl tsb_init
487 .type tsb_init,#function
488tsb_init: /* %o0 = TSB vaddr, %o1 = size in bytes */
489 prefetch [%o0 + 0x000], #n_writes
490 mov 1, %g1
491 prefetch [%o0 + 0x040], #n_writes
492 sllx %g1, TSB_TAG_INVALID_BIT, %g1
493 prefetch [%o0 + 0x080], #n_writes
4941: prefetch [%o0 + 0x0c0], #n_writes
495 stx %g1, [%o0 + 0x00]
496 stx %g1, [%o0 + 0x10]
497 stx %g1, [%o0 + 0x20]
498 stx %g1, [%o0 + 0x30]
499 prefetch [%o0 + 0x100], #n_writes
500 stx %g1, [%o0 + 0x40]
501 stx %g1, [%o0 + 0x50]
502 stx %g1, [%o0 + 0x60]
503 stx %g1, [%o0 + 0x70]
504 prefetch [%o0 + 0x140], #n_writes
505 stx %g1, [%o0 + 0x80]
506 stx %g1, [%o0 + 0x90]
507 stx %g1, [%o0 + 0xa0]
508 stx %g1, [%o0 + 0xb0]
509 prefetch [%o0 + 0x180], #n_writes
510 stx %g1, [%o0 + 0xc0]
511 stx %g1, [%o0 + 0xd0]
512 stx %g1, [%o0 + 0xe0]
513 stx %g1, [%o0 + 0xf0]
514 subcc %o1, 0x100, %o1
515 bne,pt %xcc, 1b
516 add %o0, 0x100, %o0
517 retl
518 nop
519 nop
520 nop
521 .size tsb_init, .-tsb_init
522
523 .globl NGtsb_init
524 .type NGtsb_init,#function
525NGtsb_init:
526 rd %asi, %g2
527 mov 1, %g1
528 wr %g0, ASI_BLK_INIT_QUAD_LDD_P, %asi
529 sllx %g1, TSB_TAG_INVALID_BIT, %g1
5301: stxa %g1, [%o0 + 0x00] %asi
531 stxa %g1, [%o0 + 0x10] %asi
532 stxa %g1, [%o0 + 0x20] %asi
533 stxa %g1, [%o0 + 0x30] %asi
534 stxa %g1, [%o0 + 0x40] %asi
535 stxa %g1, [%o0 + 0x50] %asi
536 stxa %g1, [%o0 + 0x60] %asi
537 stxa %g1, [%o0 + 0x70] %asi
538 stxa %g1, [%o0 + 0x80] %asi
539 stxa %g1, [%o0 + 0x90] %asi
540 stxa %g1, [%o0 + 0xa0] %asi
541 stxa %g1, [%o0 + 0xb0] %asi
542 stxa %g1, [%o0 + 0xc0] %asi
543 stxa %g1, [%o0 + 0xd0] %asi
544 stxa %g1, [%o0 + 0xe0] %asi
545 stxa %g1, [%o0 + 0xf0] %asi
546 subcc %o1, 0x100, %o1
547 bne,pt %xcc, 1b
548 add %o0, 0x100, %o0
549 membar #Sync
550 retl
551 wr %g2, 0x0, %asi
552 .size NGtsb_init, .-NGtsb_init
diff --git a/arch/sparc/kernel/ttable.S b/arch/sparc/kernel/ttable.S
new file mode 100644
index 000000000000..ea925503b42e
--- /dev/null
+++ b/arch/sparc/kernel/ttable.S
@@ -0,0 +1,266 @@
1/* ttable.S: Sparc V9 Trap Table(s) with SpitFire/Cheetah/SUN4V extensions.
2 *
3 * Copyright (C) 1996, 2001, 2006 David S. Miller (davem@davemloft.net)
4 */
5
6
7 .globl sparc64_ttable_tl0, sparc64_ttable_tl1
8 .globl tl0_icpe, tl1_icpe
9 .globl tl0_dcpe, tl1_dcpe
10 .globl tl0_fecc, tl1_fecc
11 .globl tl0_cee, tl1_cee
12 .globl tl0_iae, tl1_iae
13 .globl tl0_dae, tl1_dae
14
15sparc64_ttable_tl0:
16tl0_resv000: BOOT_KERNEL BTRAP(0x1) BTRAP(0x2) BTRAP(0x3)
17tl0_resv004: BTRAP(0x4) BTRAP(0x5) BTRAP(0x6) BTRAP(0x7)
18tl0_iax: membar #Sync
19 TRAP_NOSAVE_7INSNS(__spitfire_insn_access_exception)
20tl0_itsb_4v: SUN4V_ITSB_MISS
21tl0_iae: membar #Sync
22 TRAP_NOSAVE_7INSNS(__spitfire_access_error)
23tl0_resv00b: BTRAP(0xb) BTRAP(0xc) BTRAP(0xd) BTRAP(0xe) BTRAP(0xf)
24tl0_ill: membar #Sync
25 TRAP_7INSNS(do_illegal_instruction)
26tl0_privop: TRAP(do_privop)
27tl0_resv012: BTRAP(0x12) BTRAP(0x13) BTRAP(0x14) BTRAP(0x15) BTRAP(0x16) BTRAP(0x17)
28tl0_resv018: BTRAP(0x18) BTRAP(0x19) BTRAP(0x1a) BTRAP(0x1b) BTRAP(0x1c) BTRAP(0x1d)
29tl0_resv01e: BTRAP(0x1e) BTRAP(0x1f)
30tl0_fpdis: TRAP_NOSAVE(do_fpdis)
31tl0_fpieee: TRAP_SAVEFPU(do_fpieee)
32tl0_fpother: TRAP_NOSAVE(do_fpother_check_fitos)
33tl0_tof: TRAP(do_tof)
34tl0_cwin: CLEAN_WINDOW
35tl0_div0: TRAP(do_div0)
36tl0_resv029: BTRAP(0x29) BTRAP(0x2a) BTRAP(0x2b) BTRAP(0x2c) BTRAP(0x2d) BTRAP(0x2e)
37tl0_resv02f: BTRAP(0x2f)
38tl0_dax: TRAP_NOSAVE(__spitfire_data_access_exception)
39tl0_dtsb_4v: SUN4V_DTSB_MISS
40tl0_dae: membar #Sync
41 TRAP_NOSAVE_7INSNS(__spitfire_access_error)
42tl0_resv033: BTRAP(0x33)
43tl0_mna: TRAP_NOSAVE(do_mna)
44tl0_lddfmna: TRAP_NOSAVE(do_lddfmna)
45tl0_stdfmna: TRAP_NOSAVE(do_stdfmna)
46tl0_privact: TRAP_NOSAVE(__do_privact)
47tl0_resv038: BTRAP(0x38) BTRAP(0x39) BTRAP(0x3a) BTRAP(0x3b) BTRAP(0x3c) BTRAP(0x3d)
48tl0_resv03e: BTRAP(0x3e) BTRAP(0x3f) BTRAP(0x40)
49#ifdef CONFIG_SMP
50tl0_irq1: TRAP_IRQ(smp_call_function_client, 1)
51tl0_irq2: TRAP_IRQ(smp_receive_signal_client, 2)
52tl0_irq3: TRAP_IRQ(smp_penguin_jailcell, 3)
53tl0_irq4: TRAP_IRQ(smp_new_mmu_context_version_client, 4)
54#else
55tl0_irq1: BTRAP(0x41)
56tl0_irq2: BTRAP(0x42)
57tl0_irq3: BTRAP(0x43)
58tl0_irq4: BTRAP(0x44)
59#endif
60tl0_irq5: TRAP_IRQ(handler_irq, 5)
61#ifdef CONFIG_SMP
62tl0_irq6: TRAP_IRQ(smp_call_function_single_client, 6)
63#else
64tl0_irq6: BTRAP(0x46)
65#endif
66tl0_irq7: BTRAP(0x47) BTRAP(0x48) BTRAP(0x49)
67tl0_irq10: BTRAP(0x4a) BTRAP(0x4b) BTRAP(0x4c) BTRAP(0x4d)
68tl0_irq14: TRAP_IRQ(timer_interrupt, 14)
69tl0_irq15: TRAP_NMI_IRQ(perfctr_irq, 15)
70tl0_resv050: BTRAP(0x50) BTRAP(0x51) BTRAP(0x52) BTRAP(0x53) BTRAP(0x54) BTRAP(0x55)
71tl0_resv056: BTRAP(0x56) BTRAP(0x57) BTRAP(0x58) BTRAP(0x59) BTRAP(0x5a) BTRAP(0x5b)
72tl0_resv05c: BTRAP(0x5c) BTRAP(0x5d) BTRAP(0x5e) BTRAP(0x5f)
73tl0_ivec: TRAP_IVEC
74tl0_paw: TRAP(do_paw)
75tl0_vaw: TRAP(do_vaw)
76tl0_cee: membar #Sync
77 TRAP_NOSAVE_7INSNS(__spitfire_cee_trap)
78tl0_iamiss:
79#include "itlb_miss.S"
80tl0_damiss:
81#include "dtlb_miss.S"
82tl0_daprot:
83#include "dtlb_prot.S"
84tl0_fecc: BTRAP(0x70) /* Fast-ECC on Cheetah */
85tl0_dcpe: BTRAP(0x71) /* D-cache Parity Error on Cheetah+ */
86tl0_icpe: BTRAP(0x72) /* I-cache Parity Error on Cheetah+ */
87tl0_resv073: BTRAP(0x73) BTRAP(0x74) BTRAP(0x75)
88tl0_resv076: BTRAP(0x76) BTRAP(0x77) BTRAP(0x78) BTRAP(0x79) BTRAP(0x7a) BTRAP(0x7b)
89tl0_cpu_mondo: TRAP_NOSAVE(sun4v_cpu_mondo)
90tl0_dev_mondo: TRAP_NOSAVE(sun4v_dev_mondo)
91tl0_res_mondo: TRAP_NOSAVE(sun4v_res_mondo)
92tl0_nres_mondo: TRAP_NOSAVE(sun4v_nonres_mondo)
93tl0_s0n: SPILL_0_NORMAL
94tl0_s1n: SPILL_1_NORMAL
95tl0_s2n: SPILL_2_NORMAL
96tl0_s3n: SPILL_0_NORMAL_ETRAP
97tl0_s4n: SPILL_1_GENERIC_ETRAP
98tl0_s5n: SPILL_1_GENERIC_ETRAP_FIXUP
99tl0_s6n: SPILL_2_GENERIC_ETRAP
100tl0_s7n: SPILL_2_GENERIC_ETRAP_FIXUP
101tl0_s0o: SPILL_0_OTHER
102tl0_s1o: SPILL_1_OTHER
103tl0_s2o: SPILL_2_OTHER
104tl0_s3o: SPILL_3_OTHER
105tl0_s4o: SPILL_4_OTHER
106tl0_s5o: SPILL_5_OTHER
107tl0_s6o: SPILL_6_OTHER
108tl0_s7o: SPILL_7_OTHER
109tl0_f0n: FILL_0_NORMAL
110tl0_f1n: FILL_1_NORMAL
111tl0_f2n: FILL_2_NORMAL
112tl0_f3n: FILL_3_NORMAL
113tl0_f4n: FILL_4_NORMAL
114tl0_f5n: FILL_0_NORMAL_RTRAP
115tl0_f6n: FILL_1_GENERIC_RTRAP
116tl0_f7n: FILL_2_GENERIC_RTRAP
117tl0_f0o: FILL_0_OTHER
118tl0_f1o: FILL_1_OTHER
119tl0_f2o: FILL_2_OTHER
120tl0_f3o: FILL_3_OTHER
121tl0_f4o: FILL_4_OTHER
122tl0_f5o: FILL_5_OTHER
123tl0_f6o: FILL_6_OTHER
124tl0_f7o: FILL_7_OTHER
125tl0_resv100: BTRAP(0x100)
126tl0_bkpt: BREAKPOINT_TRAP
127tl0_divz: TRAP(do_div0)
128tl0_flushw: FLUSH_WINDOW_TRAP
129tl0_resv104: BTRAP(0x104) BTRAP(0x105) BTRAP(0x106) BTRAP(0x107) BTRAP(0x108)
130tl0_resv109: BTRAP(0x109) BTRAP(0x10a) BTRAP(0x10b) BTRAP(0x10c) BTRAP(0x10d)
131tl0_resv10e: BTRAP(0x10e) BTRAP(0x10f)
132tl0_linux32: LINUX_32BIT_SYSCALL_TRAP
133tl0_oldlinux64: LINUX_64BIT_SYSCALL_TRAP
134tl0_resv112: TRAP_UTRAP(UT_TRAP_INSTRUCTION_18,0x112) TRAP_UTRAP(UT_TRAP_INSTRUCTION_19,0x113)
135tl0_resv114: TRAP_UTRAP(UT_TRAP_INSTRUCTION_20,0x114) TRAP_UTRAP(UT_TRAP_INSTRUCTION_21,0x115)
136tl0_resv116: TRAP_UTRAP(UT_TRAP_INSTRUCTION_22,0x116) TRAP_UTRAP(UT_TRAP_INSTRUCTION_23,0x117)
137tl0_resv118: TRAP_UTRAP(UT_TRAP_INSTRUCTION_24,0x118) TRAP_UTRAP(UT_TRAP_INSTRUCTION_25,0x119)
138tl0_resv11a: TRAP_UTRAP(UT_TRAP_INSTRUCTION_26,0x11a) TRAP_UTRAP(UT_TRAP_INSTRUCTION_27,0x11b)
139tl0_resv11c: TRAP_UTRAP(UT_TRAP_INSTRUCTION_28,0x11c) TRAP_UTRAP(UT_TRAP_INSTRUCTION_29,0x11d)
140tl0_resv11e: TRAP_UTRAP(UT_TRAP_INSTRUCTION_30,0x11e) TRAP_UTRAP(UT_TRAP_INSTRUCTION_31,0x11f)
141tl0_getcc: GETCC_TRAP
142tl0_setcc: SETCC_TRAP
143tl0_getpsr: TRAP(do_getpsr)
144tl0_resv123: BTRAP(0x123) BTRAP(0x124) BTRAP(0x125) BTRAP(0x126) BTRAP(0x127)
145tl0_resv128: BTRAP(0x128) BTRAP(0x129) BTRAP(0x12a) BTRAP(0x12b) BTRAP(0x12c)
146tl0_resv12d: BTRAP(0x12d) BTRAP(0x12e) BTRAP(0x12f) BTRAP(0x130) BTRAP(0x131)
147tl0_resv132: BTRAP(0x132) BTRAP(0x133) BTRAP(0x134) BTRAP(0x135) BTRAP(0x136)
148tl0_resv137: BTRAP(0x137) BTRAP(0x138) BTRAP(0x139) BTRAP(0x13a) BTRAP(0x13b)
149tl0_resv13c: BTRAP(0x13c) BTRAP(0x13d) BTRAP(0x13e) BTRAP(0x13f) BTRAP(0x140)
150tl0_resv141: BTRAP(0x141) BTRAP(0x142) BTRAP(0x143) BTRAP(0x144) BTRAP(0x145)
151tl0_resv146: BTRAP(0x146) BTRAP(0x147) BTRAP(0x148) BTRAP(0x149) BTRAP(0x14a)
152tl0_resv14b: BTRAP(0x14b) BTRAP(0x14c) BTRAP(0x14d) BTRAP(0x14e) BTRAP(0x14f)
153tl0_resv150: BTRAP(0x150) BTRAP(0x151) BTRAP(0x152) BTRAP(0x153) BTRAP(0x154)
154tl0_resv155: BTRAP(0x155) BTRAP(0x156) BTRAP(0x157) BTRAP(0x158) BTRAP(0x159)
155tl0_resv15a: BTRAP(0x15a) BTRAP(0x15b) BTRAP(0x15c) BTRAP(0x15d) BTRAP(0x15e)
156tl0_resv15f: BTRAP(0x15f) BTRAP(0x160) BTRAP(0x161) BTRAP(0x162) BTRAP(0x163)
157tl0_resv164: BTRAP(0x164) BTRAP(0x165) BTRAP(0x166) BTRAP(0x167) BTRAP(0x168)
158tl0_resv169: BTRAP(0x169) BTRAP(0x16a) BTRAP(0x16b) BTRAP(0x16c)
159tl0_linux64: LINUX_64BIT_SYSCALL_TRAP
160tl0_gsctx: TRAP(sparc64_get_context) TRAP(sparc64_set_context)
161tl0_resv170: KPROBES_TRAP(0x170) KPROBES_TRAP(0x171) KGDB_TRAP(0x172)
162tl0_resv173: BTRAP(0x173) BTRAP(0x174) BTRAP(0x175) BTRAP(0x176) BTRAP(0x177)
163tl0_resv178: BTRAP(0x178) BTRAP(0x179) BTRAP(0x17a) BTRAP(0x17b) BTRAP(0x17c)
164tl0_resv17d: BTRAP(0x17d) BTRAP(0x17e) BTRAP(0x17f)
165#define BTRAPS(x) BTRAP(x) BTRAP(x+1) BTRAP(x+2) BTRAP(x+3) BTRAP(x+4) BTRAP(x+5) BTRAP(x+6) BTRAP(x+7)
166tl0_resv180: BTRAPS(0x180) BTRAPS(0x188)
167tl0_resv190: BTRAPS(0x190) BTRAPS(0x198)
168tl0_resv1a0: BTRAPS(0x1a0) BTRAPS(0x1a8)
169tl0_resv1b0: BTRAPS(0x1b0) BTRAPS(0x1b8)
170tl0_resv1c0: BTRAPS(0x1c0) BTRAPS(0x1c8)
171tl0_resv1d0: BTRAPS(0x1d0) BTRAPS(0x1d8)
172tl0_resv1e0: BTRAPS(0x1e0) BTRAPS(0x1e8)
173tl0_resv1f0: BTRAPS(0x1f0) BTRAPS(0x1f8)
174
175sparc64_ttable_tl1:
176tl1_resv000: BOOT_KERNEL BTRAPTL1(0x1) BTRAPTL1(0x2) BTRAPTL1(0x3)
177tl1_resv004: BTRAPTL1(0x4) BTRAPTL1(0x5) BTRAPTL1(0x6) BTRAPTL1(0x7)
178tl1_iax: TRAP_NOSAVE(__spitfire_insn_access_exception_tl1)
179tl1_itsb_4v: SUN4V_ITSB_MISS
180tl1_iae: membar #Sync
181 TRAP_NOSAVE_7INSNS(__spitfire_access_error)
182tl1_resv00b: BTRAPTL1(0xb) BTRAPTL1(0xc) BTRAPTL1(0xd) BTRAPTL1(0xe) BTRAPTL1(0xf)
183tl1_ill: TRAPTL1(do_ill_tl1)
184tl1_privop: BTRAPTL1(0x11)
185tl1_resv012: BTRAPTL1(0x12) BTRAPTL1(0x13) BTRAPTL1(0x14) BTRAPTL1(0x15)
186tl1_resv016: BTRAPTL1(0x16) BTRAPTL1(0x17) BTRAPTL1(0x18) BTRAPTL1(0x19)
187tl1_resv01a: BTRAPTL1(0x1a) BTRAPTL1(0x1b) BTRAPTL1(0x1c) BTRAPTL1(0x1d)
188tl1_resv01e: BTRAPTL1(0x1e) BTRAPTL1(0x1f)
189tl1_fpdis: TRAP_NOSAVE(do_fpdis)
190tl1_fpieee: TRAPTL1(do_fpieee_tl1)
191tl1_fpother: TRAPTL1(do_fpother_tl1)
192tl1_tof: TRAPTL1(do_tof_tl1)
193tl1_cwin: CLEAN_WINDOW
194tl1_div0: TRAPTL1(do_div0_tl1)
195tl1_resv029: BTRAPTL1(0x29) BTRAPTL1(0x2a) BTRAPTL1(0x2b) BTRAPTL1(0x2c)
196tl1_resv02d: BTRAPTL1(0x2d) BTRAPTL1(0x2e) BTRAPTL1(0x2f)
197tl1_dax: TRAP_NOSAVE(__spitfire_data_access_exception_tl1)
198tl1_dtsb_4v: SUN4V_DTSB_MISS
199tl1_dae: membar #Sync
200 TRAP_NOSAVE_7INSNS(__spitfire_access_error)
201tl1_resv033: BTRAPTL1(0x33)
202tl1_mna: TRAP_NOSAVE(do_mna)
203tl1_lddfmna: TRAPTL1(do_lddfmna_tl1)
204tl1_stdfmna: TRAPTL1(do_stdfmna_tl1)
205tl1_privact: BTRAPTL1(0x37)
206tl1_resv038: BTRAPTL1(0x38) BTRAPTL1(0x39) BTRAPTL1(0x3a) BTRAPTL1(0x3b)
207tl1_resv03c: BTRAPTL1(0x3c) BTRAPTL1(0x3d) BTRAPTL1(0x3e) BTRAPTL1(0x3f)
208tl1_resv040: BTRAPTL1(0x40)
209tl1_irq1: TRAP_IRQ(do_irq_tl1, 1) TRAP_IRQ(do_irq_tl1, 2) TRAP_IRQ(do_irq_tl1, 3)
210tl1_irq4: TRAP_IRQ(do_irq_tl1, 4) TRAP_IRQ(do_irq_tl1, 5) TRAP_IRQ(do_irq_tl1, 6)
211tl1_irq7: TRAP_IRQ(do_irq_tl1, 7) TRAP_IRQ(do_irq_tl1, 8) TRAP_IRQ(do_irq_tl1, 9)
212tl1_irq10: TRAP_IRQ(do_irq_tl1, 10) TRAP_IRQ(do_irq_tl1, 11)
213tl1_irq12: TRAP_IRQ(do_irq_tl1, 12) TRAP_IRQ(do_irq_tl1, 13)
214tl1_irq14: TRAP_IRQ(do_irq_tl1, 14) TRAP_IRQ(do_irq_tl1, 15)
215tl1_resv050: BTRAPTL1(0x50) BTRAPTL1(0x51) BTRAPTL1(0x52) BTRAPTL1(0x53)
216tl1_resv054: BTRAPTL1(0x54) BTRAPTL1(0x55) BTRAPTL1(0x56) BTRAPTL1(0x57)
217tl1_resv058: BTRAPTL1(0x58) BTRAPTL1(0x59) BTRAPTL1(0x5a) BTRAPTL1(0x5b)
218tl1_resv05c: BTRAPTL1(0x5c) BTRAPTL1(0x5d) BTRAPTL1(0x5e) BTRAPTL1(0x5f)
219tl1_ivec: TRAP_IVEC
220tl1_paw: TRAPTL1(do_paw_tl1)
221tl1_vaw: TRAPTL1(do_vaw_tl1)
222tl1_cee: BTRAPTL1(0x63)
223tl1_iamiss: BTRAPTL1(0x64) BTRAPTL1(0x65) BTRAPTL1(0x66) BTRAPTL1(0x67)
224tl1_damiss:
225#include "dtlb_miss.S"
226tl1_daprot:
227#include "dtlb_prot.S"
228tl1_fecc: BTRAPTL1(0x70) /* Fast-ECC on Cheetah */
229tl1_dcpe: BTRAPTL1(0x71) /* D-cache Parity Error on Cheetah+ */
230tl1_icpe: BTRAPTL1(0x72) /* I-cache Parity Error on Cheetah+ */
231tl1_resv073: BTRAPTL1(0x73)
232tl1_resv074: BTRAPTL1(0x74) BTRAPTL1(0x75) BTRAPTL1(0x76) BTRAPTL1(0x77)
233tl1_resv078: BTRAPTL1(0x78) BTRAPTL1(0x79) BTRAPTL1(0x7a) BTRAPTL1(0x7b)
234tl1_resv07c: BTRAPTL1(0x7c) BTRAPTL1(0x7d) BTRAPTL1(0x7e) BTRAPTL1(0x7f)
235tl1_s0n: SPILL_0_NORMAL
236tl1_s1n: SPILL_1_NORMAL
237tl1_s2n: SPILL_2_NORMAL
238tl1_s3n: SPILL_3_NORMAL
239tl1_s4n: SPILL_4_NORMAL
240tl1_s5n: SPILL_5_NORMAL
241tl1_s6n: SPILL_6_NORMAL
242tl1_s7n: SPILL_7_NORMAL
243tl1_s0o: SPILL_0_OTHER
244tl1_s1o: SPILL_1_OTHER
245tl1_s2o: SPILL_2_OTHER
246tl1_s3o: SPILL_3_OTHER
247tl1_s4o: SPILL_4_OTHER
248tl1_s5o: SPILL_5_OTHER
249tl1_s6o: SPILL_6_OTHER
250tl1_s7o: SPILL_7_OTHER
251tl1_f0n: FILL_0_NORMAL
252tl1_f1n: FILL_1_NORMAL
253tl1_f2n: FILL_2_NORMAL
254tl1_f3n: FILL_3_NORMAL
255tl1_f4n: FILL_4_NORMAL
256tl1_f5n: FILL_5_NORMAL
257tl1_f6n: FILL_6_NORMAL
258tl1_f7n: FILL_7_NORMAL
259tl1_f0o: FILL_0_OTHER
260tl1_f1o: FILL_1_OTHER
261tl1_f2o: FILL_2_OTHER
262tl1_f3o: FILL_3_OTHER
263tl1_f4o: FILL_4_OTHER
264tl1_f5o: FILL_5_OTHER
265tl1_f6o: FILL_6_OTHER
266tl1_f7o: FILL_7_OTHER
diff --git a/arch/sparc/kernel/una_asm_64.S b/arch/sparc/kernel/una_asm_64.S
new file mode 100644
index 000000000000..be183fe41443
--- /dev/null
+++ b/arch/sparc/kernel/una_asm_64.S
@@ -0,0 +1,146 @@
1/* una_asm.S: Kernel unaligned trap assembler helpers.
2 *
3 * Copyright (C) 1996,2005 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
5 */
6
7 .text
8
9 .globl __do_int_store
10__do_int_store:
11 rd %asi, %o4
12 wr %o3, 0, %asi
13 mov %o2, %g3
14 cmp %o1, 2
15 be,pn %icc, 2f
16 cmp %o1, 4
17 be,pt %icc, 1f
18 srlx %g3, 24, %g2
19 srlx %g3, 56, %g1
20 srlx %g3, 48, %g7
214: stba %g1, [%o0] %asi
22 srlx %g3, 40, %g1
235: stba %g7, [%o0 + 1] %asi
24 srlx %g3, 32, %g7
256: stba %g1, [%o0 + 2] %asi
267: stba %g7, [%o0 + 3] %asi
27 srlx %g3, 16, %g1
288: stba %g2, [%o0 + 4] %asi
29 srlx %g3, 8, %g7
309: stba %g1, [%o0 + 5] %asi
3110: stba %g7, [%o0 + 6] %asi
32 ba,pt %xcc, 0f
3311: stba %g3, [%o0 + 7] %asi
341: srl %g3, 16, %g7
3512: stba %g2, [%o0] %asi
36 srl %g3, 8, %g2
3713: stba %g7, [%o0 + 1] %asi
3814: stba %g2, [%o0 + 2] %asi
39 ba,pt %xcc, 0f
4015: stba %g3, [%o0 + 3] %asi
412: srl %g3, 8, %g2
4216: stba %g2, [%o0] %asi
4317: stba %g3, [%o0 + 1] %asi
440:
45 wr %o4, 0x0, %asi
46 retl
47 mov 0, %o0
48 .size __do_int_store, .-__do_int_store
49
50 .section __ex_table,"a"
51 .word 4b, __retl_efault
52 .word 5b, __retl_efault
53 .word 6b, __retl_efault
54 .word 7b, __retl_efault
55 .word 8b, __retl_efault
56 .word 9b, __retl_efault
57 .word 10b, __retl_efault
58 .word 11b, __retl_efault
59 .word 12b, __retl_efault
60 .word 13b, __retl_efault
61 .word 14b, __retl_efault
62 .word 15b, __retl_efault
63 .word 16b, __retl_efault
64 .word 17b, __retl_efault
65 .previous
66
67 .globl do_int_load
68do_int_load:
69 rd %asi, %o5
70 wr %o4, 0, %asi
71 cmp %o1, 8
72 bge,pn %icc, 9f
73 cmp %o1, 4
74 be,pt %icc, 6f
754: lduba [%o2] %asi, %g2
765: lduba [%o2 + 1] %asi, %g3
77 sll %g2, 8, %g2
78 brz,pt %o3, 3f
79 add %g2, %g3, %g2
80 sllx %g2, 48, %g2
81 srax %g2, 48, %g2
823: ba,pt %xcc, 0f
83 stx %g2, [%o0]
846: lduba [%o2 + 1] %asi, %g3
85 sll %g2, 24, %g2
867: lduba [%o2 + 2] %asi, %g7
87 sll %g3, 16, %g3
888: lduba [%o2 + 3] %asi, %g1
89 sll %g7, 8, %g7
90 or %g2, %g3, %g2
91 or %g7, %g1, %g7
92 or %g2, %g7, %g2
93 brnz,a,pt %o3, 3f
94 sra %g2, 0, %g2
953: ba,pt %xcc, 0f
96 stx %g2, [%o0]
979: lduba [%o2] %asi, %g2
9810: lduba [%o2 + 1] %asi, %g3
99 sllx %g2, 56, %g2
10011: lduba [%o2 + 2] %asi, %g7
101 sllx %g3, 48, %g3
10212: lduba [%o2 + 3] %asi, %g1
103 sllx %g7, 40, %g7
104 sllx %g1, 32, %g1
105 or %g2, %g3, %g2
106 or %g7, %g1, %g7
10713: lduba [%o2 + 4] %asi, %g3
108 or %g2, %g7, %g7
10914: lduba [%o2 + 5] %asi, %g1
110 sllx %g3, 24, %g3
11115: lduba [%o2 + 6] %asi, %g2
112 sllx %g1, 16, %g1
113 or %g7, %g3, %g7
11416: lduba [%o2 + 7] %asi, %g3
115 sllx %g2, 8, %g2
116 or %g7, %g1, %g7
117 or %g2, %g3, %g2
118 or %g7, %g2, %g7
119 cmp %o1, 8
120 be,a,pt %icc, 0f
121 stx %g7, [%o0]
122 srlx %g7, 32, %g2
123 sra %g7, 0, %g7
124 stx %g2, [%o0]
125 stx %g7, [%o0 + 8]
1260:
127 wr %o5, 0x0, %asi
128 retl
129 mov 0, %o0
130 .size __do_int_load, .-__do_int_load
131
132 .section __ex_table,"a"
133 .word 4b, __retl_efault
134 .word 5b, __retl_efault
135 .word 6b, __retl_efault
136 .word 7b, __retl_efault
137 .word 8b, __retl_efault
138 .word 9b, __retl_efault
139 .word 10b, __retl_efault
140 .word 11b, __retl_efault
141 .word 12b, __retl_efault
142 .word 13b, __retl_efault
143 .word 14b, __retl_efault
144 .word 15b, __retl_efault
145 .word 16b, __retl_efault
146 .previous
diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c
new file mode 100644
index 000000000000..203ddfad9f27
--- /dev/null
+++ b/arch/sparc/kernel/unaligned_64.c
@@ -0,0 +1,690 @@
1/*
2 * unaligned.c: Unaligned load/store trap handling with special
3 * cases for the kernel to do them more quickly.
4 *
5 * Copyright (C) 1996,2008 David S. Miller (davem@davemloft.net)
6 * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
7 */
8
9
10#include <linux/jiffies.h>
11#include <linux/kernel.h>
12#include <linux/sched.h>
13#include <linux/mm.h>
14#include <linux/module.h>
15#include <asm/asi.h>
16#include <asm/ptrace.h>
17#include <asm/pstate.h>
18#include <asm/processor.h>
19#include <asm/system.h>
20#include <asm/uaccess.h>
21#include <linux/smp.h>
22#include <linux/bitops.h>
23#include <asm/fpumacro.h>
24
25/* #define DEBUG_MNA */
26
27enum direction {
28 load, /* ld, ldd, ldh, ldsh */
29 store, /* st, std, sth, stsh */
30 both, /* Swap, ldstub, cas, ... */
31 fpld,
32 fpst,
33 invalid,
34};
35
36#ifdef DEBUG_MNA
37static char *dirstrings[] = {
38 "load", "store", "both", "fpload", "fpstore", "invalid"
39};
40#endif
41
42static inline enum direction decode_direction(unsigned int insn)
43{
44 unsigned long tmp = (insn >> 21) & 1;
45
46 if (!tmp)
47 return load;
48 else {
49 switch ((insn>>19)&0xf) {
50 case 15: /* swap* */
51 return both;
52 default:
53 return store;
54 }
55 }
56}
57
58/* 16 = double-word, 8 = extra-word, 4 = word, 2 = half-word */
59static inline int decode_access_size(unsigned int insn)
60{
61 unsigned int tmp;
62
63 tmp = ((insn >> 19) & 0xf);
64 if (tmp == 11 || tmp == 14) /* ldx/stx */
65 return 8;
66 tmp &= 3;
67 if (!tmp)
68 return 4;
69 else if (tmp == 3)
70 return 16; /* ldd/std - Although it is actually 8 */
71 else if (tmp == 2)
72 return 2;
73 else {
74 printk("Impossible unaligned trap. insn=%08x\n", insn);
75 die_if_kernel("Byte sized unaligned access?!?!", current_thread_info()->kregs);
76
77 /* GCC should never warn that control reaches the end
78 * of this function without returning a value because
79 * die_if_kernel() is marked with attribute 'noreturn'.
80 * Alas, some versions do...
81 */
82
83 return 0;
84 }
85}
86
87static inline int decode_asi(unsigned int insn, struct pt_regs *regs)
88{
89 if (insn & 0x800000) {
90 if (insn & 0x2000)
91 return (unsigned char)(regs->tstate >> 24); /* %asi */
92 else
93 return (unsigned char)(insn >> 5); /* imm_asi */
94 } else
95 return ASI_P;
96}
97
98/* 0x400000 = signed, 0 = unsigned */
99static inline int decode_signedness(unsigned int insn)
100{
101 return (insn & 0x400000);
102}
103
104static inline void maybe_flush_windows(unsigned int rs1, unsigned int rs2,
105 unsigned int rd, int from_kernel)
106{
107 if (rs2 >= 16 || rs1 >= 16 || rd >= 16) {
108 if (from_kernel != 0)
109 __asm__ __volatile__("flushw");
110 else
111 flushw_user();
112 }
113}
114
115static inline long sign_extend_imm13(long imm)
116{
117 return imm << 51 >> 51;
118}
119
120static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs)
121{
122 unsigned long value;
123
124 if (reg < 16)
125 return (!reg ? 0 : regs->u_regs[reg]);
126 if (regs->tstate & TSTATE_PRIV) {
127 struct reg_window *win;
128 win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS);
129 value = win->locals[reg - 16];
130 } else if (test_thread_flag(TIF_32BIT)) {
131 struct reg_window32 __user *win32;
132 win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
133 get_user(value, &win32->locals[reg - 16]);
134 } else {
135 struct reg_window __user *win;
136 win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS);
137 get_user(value, &win->locals[reg - 16]);
138 }
139 return value;
140}
141
142static unsigned long *fetch_reg_addr(unsigned int reg, struct pt_regs *regs)
143{
144 if (reg < 16)
145 return &regs->u_regs[reg];
146 if (regs->tstate & TSTATE_PRIV) {
147 struct reg_window *win;
148 win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS);
149 return &win->locals[reg - 16];
150 } else if (test_thread_flag(TIF_32BIT)) {
151 struct reg_window32 *win32;
152 win32 = (struct reg_window32 *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
153 return (unsigned long *)&win32->locals[reg - 16];
154 } else {
155 struct reg_window *win;
156 win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS);
157 return &win->locals[reg - 16];
158 }
159}
160
161unsigned long compute_effective_address(struct pt_regs *regs,
162 unsigned int insn, unsigned int rd)
163{
164 unsigned int rs1 = (insn >> 14) & 0x1f;
165 unsigned int rs2 = insn & 0x1f;
166 int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
167
168 if (insn & 0x2000) {
169 maybe_flush_windows(rs1, 0, rd, from_kernel);
170 return (fetch_reg(rs1, regs) + sign_extend_imm13(insn));
171 } else {
172 maybe_flush_windows(rs1, rs2, rd, from_kernel);
173 return (fetch_reg(rs1, regs) + fetch_reg(rs2, regs));
174 }
175}
176
177/* This is just to make gcc think die_if_kernel does return... */
178static void __used unaligned_panic(char *str, struct pt_regs *regs)
179{
180 die_if_kernel(str, regs);
181}
182
183extern int do_int_load(unsigned long *dest_reg, int size,
184 unsigned long *saddr, int is_signed, int asi);
185
186extern int __do_int_store(unsigned long *dst_addr, int size,
187 unsigned long src_val, int asi);
188
189static inline int do_int_store(int reg_num, int size, unsigned long *dst_addr,
190 struct pt_regs *regs, int asi, int orig_asi)
191{
192 unsigned long zero = 0;
193 unsigned long *src_val_p = &zero;
194 unsigned long src_val;
195
196 if (size == 16) {
197 size = 8;
198 zero = (((long)(reg_num ?
199 (unsigned)fetch_reg(reg_num, regs) : 0)) << 32) |
200 (unsigned)fetch_reg(reg_num + 1, regs);
201 } else if (reg_num) {
202 src_val_p = fetch_reg_addr(reg_num, regs);
203 }
204 src_val = *src_val_p;
205 if (unlikely(asi != orig_asi)) {
206 switch (size) {
207 case 2:
208 src_val = swab16(src_val);
209 break;
210 case 4:
211 src_val = swab32(src_val);
212 break;
213 case 8:
214 src_val = swab64(src_val);
215 break;
216 case 16:
217 default:
218 BUG();
219 break;
220 };
221 }
222 return __do_int_store(dst_addr, size, src_val, asi);
223}
224
225static inline void advance(struct pt_regs *regs)
226{
227 regs->tpc = regs->tnpc;
228 regs->tnpc += 4;
229 if (test_thread_flag(TIF_32BIT)) {
230 regs->tpc &= 0xffffffff;
231 regs->tnpc &= 0xffffffff;
232 }
233}
234
235static inline int floating_point_load_or_store_p(unsigned int insn)
236{
237 return (insn >> 24) & 1;
238}
239
240static inline int ok_for_kernel(unsigned int insn)
241{
242 return !floating_point_load_or_store_p(insn);
243}
244
245static void kernel_mna_trap_fault(int fixup_tstate_asi)
246{
247 struct pt_regs *regs = current_thread_info()->kern_una_regs;
248 unsigned int insn = current_thread_info()->kern_una_insn;
249 const struct exception_table_entry *entry;
250
251 entry = search_exception_tables(regs->tpc);
252 if (!entry) {
253 unsigned long address;
254
255 address = compute_effective_address(regs, insn,
256 ((insn >> 25) & 0x1f));
257 if (address < PAGE_SIZE) {
258 printk(KERN_ALERT "Unable to handle kernel NULL "
259 "pointer dereference in mna handler");
260 } else
261 printk(KERN_ALERT "Unable to handle kernel paging "
262 "request in mna handler");
263 printk(KERN_ALERT " at virtual address %016lx\n",address);
264 printk(KERN_ALERT "current->{active_,}mm->context = %016lx\n",
265 (current->mm ? CTX_HWBITS(current->mm->context) :
266 CTX_HWBITS(current->active_mm->context)));
267 printk(KERN_ALERT "current->{active_,}mm->pgd = %016lx\n",
268 (current->mm ? (unsigned long) current->mm->pgd :
269 (unsigned long) current->active_mm->pgd));
270 die_if_kernel("Oops", regs);
271 /* Not reached */
272 }
273 regs->tpc = entry->fixup;
274 regs->tnpc = regs->tpc + 4;
275
276 if (fixup_tstate_asi) {
277 regs->tstate &= ~TSTATE_ASI;
278 regs->tstate |= (ASI_AIUS << 24UL);
279 }
280}
281
282static void log_unaligned(struct pt_regs *regs)
283{
284 static unsigned long count, last_time;
285
286 if (time_after(jiffies, last_time + 5 * HZ))
287 count = 0;
288 if (count < 5) {
289 last_time = jiffies;
290 count++;
291 printk("Kernel unaligned access at TPC[%lx] %pS\n",
292 regs->tpc, (void *) regs->tpc);
293 }
294}
295
296asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
297{
298 enum direction dir = decode_direction(insn);
299 int size = decode_access_size(insn);
300 int orig_asi, asi;
301
302 current_thread_info()->kern_una_regs = regs;
303 current_thread_info()->kern_una_insn = insn;
304
305 orig_asi = asi = decode_asi(insn, regs);
306
307 /* If this is a {get,put}_user() on an unaligned userspace pointer,
308 * just signal a fault and do not log the event.
309 */
310 if (asi == ASI_AIUS) {
311 kernel_mna_trap_fault(0);
312 return;
313 }
314
315 log_unaligned(regs);
316
317 if (!ok_for_kernel(insn) || dir == both) {
318 printk("Unsupported unaligned load/store trap for kernel "
319 "at <%016lx>.\n", regs->tpc);
320 unaligned_panic("Kernel does fpu/atomic "
321 "unaligned load/store.", regs);
322
323 kernel_mna_trap_fault(0);
324 } else {
325 unsigned long addr, *reg_addr;
326 int err;
327
328 addr = compute_effective_address(regs, insn,
329 ((insn >> 25) & 0x1f));
330#ifdef DEBUG_MNA
331 printk("KMNA: pc=%016lx [dir=%s addr=%016lx size=%d] "
332 "retpc[%016lx]\n",
333 regs->tpc, dirstrings[dir], addr, size,
334 regs->u_regs[UREG_RETPC]);
335#endif
336 switch (asi) {
337 case ASI_NL:
338 case ASI_AIUPL:
339 case ASI_AIUSL:
340 case ASI_PL:
341 case ASI_SL:
342 case ASI_PNFL:
343 case ASI_SNFL:
344 asi &= ~0x08;
345 break;
346 };
347 switch (dir) {
348 case load:
349 reg_addr = fetch_reg_addr(((insn>>25)&0x1f), regs);
350 err = do_int_load(reg_addr, size,
351 (unsigned long *) addr,
352 decode_signedness(insn), asi);
353 if (likely(!err) && unlikely(asi != orig_asi)) {
354 unsigned long val_in = *reg_addr;
355 switch (size) {
356 case 2:
357 val_in = swab16(val_in);
358 break;
359 case 4:
360 val_in = swab32(val_in);
361 break;
362 case 8:
363 val_in = swab64(val_in);
364 break;
365 case 16:
366 default:
367 BUG();
368 break;
369 };
370 *reg_addr = val_in;
371 }
372 break;
373
374 case store:
375 err = do_int_store(((insn>>25)&0x1f), size,
376 (unsigned long *) addr, regs,
377 asi, orig_asi);
378 break;
379
380 default:
381 panic("Impossible kernel unaligned trap.");
382 /* Not reached... */
383 }
384 if (unlikely(err))
385 kernel_mna_trap_fault(1);
386 else
387 advance(regs);
388 }
389}
390
391static char popc_helper[] = {
3920, 1, 1, 2, 1, 2, 2, 3,
3931, 2, 2, 3, 2, 3, 3, 4,
394};
395
396int handle_popc(u32 insn, struct pt_regs *regs)
397{
398 u64 value;
399 int ret, i, rd = ((insn >> 25) & 0x1f);
400 int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
401
402 if (insn & 0x2000) {
403 maybe_flush_windows(0, 0, rd, from_kernel);
404 value = sign_extend_imm13(insn);
405 } else {
406 maybe_flush_windows(0, insn & 0x1f, rd, from_kernel);
407 value = fetch_reg(insn & 0x1f, regs);
408 }
409 for (ret = 0, i = 0; i < 16; i++) {
410 ret += popc_helper[value & 0xf];
411 value >>= 4;
412 }
413 if (rd < 16) {
414 if (rd)
415 regs->u_regs[rd] = ret;
416 } else {
417 if (test_thread_flag(TIF_32BIT)) {
418 struct reg_window32 __user *win32;
419 win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
420 put_user(ret, &win32->locals[rd - 16]);
421 } else {
422 struct reg_window __user *win;
423 win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS);
424 put_user(ret, &win->locals[rd - 16]);
425 }
426 }
427 advance(regs);
428 return 1;
429}
430
431extern void do_fpother(struct pt_regs *regs);
432extern void do_privact(struct pt_regs *regs);
433extern void spitfire_data_access_exception(struct pt_regs *regs,
434 unsigned long sfsr,
435 unsigned long sfar);
436extern void sun4v_data_access_exception(struct pt_regs *regs,
437 unsigned long addr,
438 unsigned long type_ctx);
439
440int handle_ldf_stq(u32 insn, struct pt_regs *regs)
441{
442 unsigned long addr = compute_effective_address(regs, insn, 0);
443 int freg = ((insn >> 25) & 0x1e) | ((insn >> 20) & 0x20);
444 struct fpustate *f = FPUSTATE;
445 int asi = decode_asi(insn, regs);
446 int flag = (freg < 32) ? FPRS_DL : FPRS_DU;
447
448 save_and_clear_fpu();
449 current_thread_info()->xfsr[0] &= ~0x1c000;
450 if (freg & 3) {
451 current_thread_info()->xfsr[0] |= (6 << 14) /* invalid_fp_register */;
452 do_fpother(regs);
453 return 0;
454 }
455 if (insn & 0x200000) {
456 /* STQ */
457 u64 first = 0, second = 0;
458
459 if (current_thread_info()->fpsaved[0] & flag) {
460 first = *(u64 *)&f->regs[freg];
461 second = *(u64 *)&f->regs[freg+2];
462 }
463 if (asi < 0x80) {
464 do_privact(regs);
465 return 1;
466 }
467 switch (asi) {
468 case ASI_P:
469 case ASI_S: break;
470 case ASI_PL:
471 case ASI_SL:
472 {
473 /* Need to convert endians */
474 u64 tmp = __swab64p(&first);
475
476 first = __swab64p(&second);
477 second = tmp;
478 break;
479 }
480 default:
481 if (tlb_type == hypervisor)
482 sun4v_data_access_exception(regs, addr, 0);
483 else
484 spitfire_data_access_exception(regs, 0, addr);
485 return 1;
486 }
487 if (put_user (first >> 32, (u32 __user *)addr) ||
488 __put_user ((u32)first, (u32 __user *)(addr + 4)) ||
489 __put_user (second >> 32, (u32 __user *)(addr + 8)) ||
490 __put_user ((u32)second, (u32 __user *)(addr + 12))) {
491 if (tlb_type == hypervisor)
492 sun4v_data_access_exception(regs, addr, 0);
493 else
494 spitfire_data_access_exception(regs, 0, addr);
495 return 1;
496 }
497 } else {
498 /* LDF, LDDF, LDQF */
499 u32 data[4] __attribute__ ((aligned(8)));
500 int size, i;
501 int err;
502
503 if (asi < 0x80) {
504 do_privact(regs);
505 return 1;
506 } else if (asi > ASI_SNFL) {
507 if (tlb_type == hypervisor)
508 sun4v_data_access_exception(regs, addr, 0);
509 else
510 spitfire_data_access_exception(regs, 0, addr);
511 return 1;
512 }
513 switch (insn & 0x180000) {
514 case 0x000000: size = 1; break;
515 case 0x100000: size = 4; break;
516 default: size = 2; break;
517 }
518 for (i = 0; i < size; i++)
519 data[i] = 0;
520
521 err = get_user (data[0], (u32 __user *) addr);
522 if (!err) {
523 for (i = 1; i < size; i++)
524 err |= __get_user (data[i], (u32 __user *)(addr + 4*i));
525 }
526 if (err && !(asi & 0x2 /* NF */)) {
527 if (tlb_type == hypervisor)
528 sun4v_data_access_exception(regs, addr, 0);
529 else
530 spitfire_data_access_exception(regs, 0, addr);
531 return 1;
532 }
533 if (asi & 0x8) /* Little */ {
534 u64 tmp;
535
536 switch (size) {
537 case 1: data[0] = le32_to_cpup(data + 0); break;
538 default:*(u64 *)(data + 0) = le64_to_cpup((u64 *)(data + 0));
539 break;
540 case 4: tmp = le64_to_cpup((u64 *)(data + 0));
541 *(u64 *)(data + 0) = le64_to_cpup((u64 *)(data + 2));
542 *(u64 *)(data + 2) = tmp;
543 break;
544 }
545 }
546 if (!(current_thread_info()->fpsaved[0] & FPRS_FEF)) {
547 current_thread_info()->fpsaved[0] = FPRS_FEF;
548 current_thread_info()->gsr[0] = 0;
549 }
550 if (!(current_thread_info()->fpsaved[0] & flag)) {
551 if (freg < 32)
552 memset(f->regs, 0, 32*sizeof(u32));
553 else
554 memset(f->regs+32, 0, 32*sizeof(u32));
555 }
556 memcpy(f->regs + freg, data, size * 4);
557 current_thread_info()->fpsaved[0] |= flag;
558 }
559 advance(regs);
560 return 1;
561}
562
563void handle_ld_nf(u32 insn, struct pt_regs *regs)
564{
565 int rd = ((insn >> 25) & 0x1f);
566 int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
567 unsigned long *reg;
568
569 maybe_flush_windows(0, 0, rd, from_kernel);
570 reg = fetch_reg_addr(rd, regs);
571 if (from_kernel || rd < 16) {
572 reg[0] = 0;
573 if ((insn & 0x780000) == 0x180000)
574 reg[1] = 0;
575 } else if (test_thread_flag(TIF_32BIT)) {
576 put_user(0, (int __user *) reg);
577 if ((insn & 0x780000) == 0x180000)
578 put_user(0, ((int __user *) reg) + 1);
579 } else {
580 put_user(0, (unsigned long __user *) reg);
581 if ((insn & 0x780000) == 0x180000)
582 put_user(0, (unsigned long __user *) reg + 1);
583 }
584 advance(regs);
585}
586
587void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr)
588{
589 unsigned long pc = regs->tpc;
590 unsigned long tstate = regs->tstate;
591 u32 insn;
592 u32 first, second;
593 u64 value;
594 u8 freg;
595 int flag;
596 struct fpustate *f = FPUSTATE;
597
598 if (tstate & TSTATE_PRIV)
599 die_if_kernel("lddfmna from kernel", regs);
600 if (test_thread_flag(TIF_32BIT))
601 pc = (u32)pc;
602 if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
603 int asi = decode_asi(insn, regs);
604 if ((asi > ASI_SNFL) ||
605 (asi < ASI_P))
606 goto daex;
607 if (get_user(first, (u32 __user *)sfar) ||
608 get_user(second, (u32 __user *)(sfar + 4))) {
609 if (asi & 0x2) /* NF */ {
610 first = 0; second = 0;
611 } else
612 goto daex;
613 }
614 save_and_clear_fpu();
615 freg = ((insn >> 25) & 0x1e) | ((insn >> 20) & 0x20);
616 value = (((u64)first) << 32) | second;
617 if (asi & 0x8) /* Little */
618 value = __swab64p(&value);
619 flag = (freg < 32) ? FPRS_DL : FPRS_DU;
620 if (!(current_thread_info()->fpsaved[0] & FPRS_FEF)) {
621 current_thread_info()->fpsaved[0] = FPRS_FEF;
622 current_thread_info()->gsr[0] = 0;
623 }
624 if (!(current_thread_info()->fpsaved[0] & flag)) {
625 if (freg < 32)
626 memset(f->regs, 0, 32*sizeof(u32));
627 else
628 memset(f->regs+32, 0, 32*sizeof(u32));
629 }
630 *(u64 *)(f->regs + freg) = value;
631 current_thread_info()->fpsaved[0] |= flag;
632 } else {
633daex:
634 if (tlb_type == hypervisor)
635 sun4v_data_access_exception(regs, sfar, sfsr);
636 else
637 spitfire_data_access_exception(regs, sfsr, sfar);
638 return;
639 }
640 advance(regs);
641 return;
642}
643
644void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr)
645{
646 unsigned long pc = regs->tpc;
647 unsigned long tstate = regs->tstate;
648 u32 insn;
649 u64 value;
650 u8 freg;
651 int flag;
652 struct fpustate *f = FPUSTATE;
653
654 if (tstate & TSTATE_PRIV)
655 die_if_kernel("stdfmna from kernel", regs);
656 if (test_thread_flag(TIF_32BIT))
657 pc = (u32)pc;
658 if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
659 int asi = decode_asi(insn, regs);
660 freg = ((insn >> 25) & 0x1e) | ((insn >> 20) & 0x20);
661 value = 0;
662 flag = (freg < 32) ? FPRS_DL : FPRS_DU;
663 if ((asi > ASI_SNFL) ||
664 (asi < ASI_P))
665 goto daex;
666 save_and_clear_fpu();
667 if (current_thread_info()->fpsaved[0] & flag)
668 value = *(u64 *)&f->regs[freg];
669 switch (asi) {
670 case ASI_P:
671 case ASI_S: break;
672 case ASI_PL:
673 case ASI_SL:
674 value = __swab64p(&value); break;
675 default: goto daex;
676 }
677 if (put_user (value >> 32, (u32 __user *) sfar) ||
678 __put_user ((u32)value, (u32 __user *)(sfar + 4)))
679 goto daex;
680 } else {
681daex:
682 if (tlb_type == hypervisor)
683 sun4v_data_access_exception(regs, sfar, sfsr);
684 else
685 spitfire_data_access_exception(regs, sfsr, sfar);
686 return;
687 }
688 advance(regs);
689 return;
690}
diff --git a/arch/sparc/kernel/us2e_cpufreq.c b/arch/sparc/kernel/us2e_cpufreq.c
new file mode 100644
index 000000000000..791c15138f3a
--- /dev/null
+++ b/arch/sparc/kernel/us2e_cpufreq.c
@@ -0,0 +1,413 @@
1/* us2e_cpufreq.c: UltraSPARC-IIe cpu frequency support
2 *
3 * Copyright (C) 2003 David S. Miller (davem@redhat.com)
4 *
5 * Many thanks to Dominik Brodowski for fixing up the cpufreq
6 * infrastructure in order to make this driver easier to implement.
7 */
8
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/sched.h>
12#include <linux/smp.h>
13#include <linux/cpufreq.h>
14#include <linux/threads.h>
15#include <linux/slab.h>
16#include <linux/delay.h>
17#include <linux/init.h>
18
19#include <asm/asi.h>
20#include <asm/timer.h>
21
22static struct cpufreq_driver *cpufreq_us2e_driver;
23
24struct us2e_freq_percpu_info {
25 struct cpufreq_frequency_table table[6];
26};
27
28/* Indexed by cpu number. */
29static struct us2e_freq_percpu_info *us2e_freq_table;
30
31#define HBIRD_MEM_CNTL0_ADDR 0x1fe0000f010UL
32#define HBIRD_ESTAR_MODE_ADDR 0x1fe0000f080UL
33
34/* UltraSPARC-IIe has five dividers: 1, 2, 4, 6, and 8. These are controlled
35 * in the ESTAR mode control register.
36 */
37#define ESTAR_MODE_DIV_1 0x0000000000000000UL
38#define ESTAR_MODE_DIV_2 0x0000000000000001UL
39#define ESTAR_MODE_DIV_4 0x0000000000000003UL
40#define ESTAR_MODE_DIV_6 0x0000000000000002UL
41#define ESTAR_MODE_DIV_8 0x0000000000000004UL
42#define ESTAR_MODE_DIV_MASK 0x0000000000000007UL
43
44#define MCTRL0_SREFRESH_ENAB 0x0000000000010000UL
45#define MCTRL0_REFR_COUNT_MASK 0x0000000000007f00UL
46#define MCTRL0_REFR_COUNT_SHIFT 8
47#define MCTRL0_REFR_INTERVAL 7800
48#define MCTRL0_REFR_CLKS_P_CNT 64
49
50static unsigned long read_hbreg(unsigned long addr)
51{
52 unsigned long ret;
53
54 __asm__ __volatile__("ldxa [%1] %2, %0"
55 : "=&r" (ret)
56 : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
57 return ret;
58}
59
60static void write_hbreg(unsigned long addr, unsigned long val)
61{
62 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
63 "membar #Sync"
64 : /* no outputs */
65 : "r" (val), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E)
66 : "memory");
67 if (addr == HBIRD_ESTAR_MODE_ADDR) {
68 /* Need to wait 16 clock cycles for the PLL to lock. */
69 udelay(1);
70 }
71}
72
73static void self_refresh_ctl(int enable)
74{
75 unsigned long mctrl = read_hbreg(HBIRD_MEM_CNTL0_ADDR);
76
77 if (enable)
78 mctrl |= MCTRL0_SREFRESH_ENAB;
79 else
80 mctrl &= ~MCTRL0_SREFRESH_ENAB;
81 write_hbreg(HBIRD_MEM_CNTL0_ADDR, mctrl);
82 (void) read_hbreg(HBIRD_MEM_CNTL0_ADDR);
83}
84
85static void frob_mem_refresh(int cpu_slowing_down,
86 unsigned long clock_tick,
87 unsigned long old_divisor, unsigned long divisor)
88{
89 unsigned long old_refr_count, refr_count, mctrl;
90
91 refr_count = (clock_tick * MCTRL0_REFR_INTERVAL);
92 refr_count /= (MCTRL0_REFR_CLKS_P_CNT * divisor * 1000000000UL);
93
94 mctrl = read_hbreg(HBIRD_MEM_CNTL0_ADDR);
95 old_refr_count = (mctrl & MCTRL0_REFR_COUNT_MASK)
96 >> MCTRL0_REFR_COUNT_SHIFT;
97
98 mctrl &= ~MCTRL0_REFR_COUNT_MASK;
99 mctrl |= refr_count << MCTRL0_REFR_COUNT_SHIFT;
100 write_hbreg(HBIRD_MEM_CNTL0_ADDR, mctrl);
101 mctrl = read_hbreg(HBIRD_MEM_CNTL0_ADDR);
102
103 if (cpu_slowing_down && !(mctrl & MCTRL0_SREFRESH_ENAB)) {
104 unsigned long usecs;
105
106 /* We have to wait for both refresh counts (old
107 * and new) to go to zero.
108 */
109 usecs = (MCTRL0_REFR_CLKS_P_CNT *
110 (refr_count + old_refr_count) *
111 1000000UL *
112 old_divisor) / clock_tick;
113 udelay(usecs + 1UL);
114 }
115}
116
117static void us2e_transition(unsigned long estar, unsigned long new_bits,
118 unsigned long clock_tick,
119 unsigned long old_divisor, unsigned long divisor)
120{
121 unsigned long flags;
122
123 local_irq_save(flags);
124
125 estar &= ~ESTAR_MODE_DIV_MASK;
126
127 /* This is based upon the state transition diagram in the IIe manual. */
128 if (old_divisor == 2 && divisor == 1) {
129 self_refresh_ctl(0);
130 write_hbreg(HBIRD_ESTAR_MODE_ADDR, estar | new_bits);
131 frob_mem_refresh(0, clock_tick, old_divisor, divisor);
132 } else if (old_divisor == 1 && divisor == 2) {
133 frob_mem_refresh(1, clock_tick, old_divisor, divisor);
134 write_hbreg(HBIRD_ESTAR_MODE_ADDR, estar | new_bits);
135 self_refresh_ctl(1);
136 } else if (old_divisor == 1 && divisor > 2) {
137 us2e_transition(estar, ESTAR_MODE_DIV_2, clock_tick,
138 1, 2);
139 us2e_transition(estar, new_bits, clock_tick,
140 2, divisor);
141 } else if (old_divisor > 2 && divisor == 1) {
142 us2e_transition(estar, ESTAR_MODE_DIV_2, clock_tick,
143 old_divisor, 2);
144 us2e_transition(estar, new_bits, clock_tick,
145 2, divisor);
146 } else if (old_divisor < divisor) {
147 frob_mem_refresh(0, clock_tick, old_divisor, divisor);
148 write_hbreg(HBIRD_ESTAR_MODE_ADDR, estar | new_bits);
149 } else if (old_divisor > divisor) {
150 write_hbreg(HBIRD_ESTAR_MODE_ADDR, estar | new_bits);
151 frob_mem_refresh(1, clock_tick, old_divisor, divisor);
152 } else {
153 BUG();
154 }
155
156 local_irq_restore(flags);
157}
158
159static unsigned long index_to_estar_mode(unsigned int index)
160{
161 switch (index) {
162 case 0:
163 return ESTAR_MODE_DIV_1;
164
165 case 1:
166 return ESTAR_MODE_DIV_2;
167
168 case 2:
169 return ESTAR_MODE_DIV_4;
170
171 case 3:
172 return ESTAR_MODE_DIV_6;
173
174 case 4:
175 return ESTAR_MODE_DIV_8;
176
177 default:
178 BUG();
179 };
180}
181
182static unsigned long index_to_divisor(unsigned int index)
183{
184 switch (index) {
185 case 0:
186 return 1;
187
188 case 1:
189 return 2;
190
191 case 2:
192 return 4;
193
194 case 3:
195 return 6;
196
197 case 4:
198 return 8;
199
200 default:
201 BUG();
202 };
203}
204
205static unsigned long estar_to_divisor(unsigned long estar)
206{
207 unsigned long ret;
208
209 switch (estar & ESTAR_MODE_DIV_MASK) {
210 case ESTAR_MODE_DIV_1:
211 ret = 1;
212 break;
213 case ESTAR_MODE_DIV_2:
214 ret = 2;
215 break;
216 case ESTAR_MODE_DIV_4:
217 ret = 4;
218 break;
219 case ESTAR_MODE_DIV_6:
220 ret = 6;
221 break;
222 case ESTAR_MODE_DIV_8:
223 ret = 8;
224 break;
225 default:
226 BUG();
227 };
228
229 return ret;
230}
231
232static unsigned int us2e_freq_get(unsigned int cpu)
233{
234 cpumask_t cpus_allowed;
235 unsigned long clock_tick, estar;
236
237 if (!cpu_online(cpu))
238 return 0;
239
240 cpus_allowed = current->cpus_allowed;
241 set_cpus_allowed(current, cpumask_of_cpu(cpu));
242
243 clock_tick = sparc64_get_clock_tick(cpu) / 1000;
244 estar = read_hbreg(HBIRD_ESTAR_MODE_ADDR);
245
246 set_cpus_allowed(current, cpus_allowed);
247
248 return clock_tick / estar_to_divisor(estar);
249}
250
251static void us2e_set_cpu_divider_index(unsigned int cpu, unsigned int index)
252{
253 unsigned long new_bits, new_freq;
254 unsigned long clock_tick, divisor, old_divisor, estar;
255 cpumask_t cpus_allowed;
256 struct cpufreq_freqs freqs;
257
258 if (!cpu_online(cpu))
259 return;
260
261 cpus_allowed = current->cpus_allowed;
262 set_cpus_allowed(current, cpumask_of_cpu(cpu));
263
264 new_freq = clock_tick = sparc64_get_clock_tick(cpu) / 1000;
265 new_bits = index_to_estar_mode(index);
266 divisor = index_to_divisor(index);
267 new_freq /= divisor;
268
269 estar = read_hbreg(HBIRD_ESTAR_MODE_ADDR);
270
271 old_divisor = estar_to_divisor(estar);
272
273 freqs.old = clock_tick / old_divisor;
274 freqs.new = new_freq;
275 freqs.cpu = cpu;
276 cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
277
278 if (old_divisor != divisor)
279 us2e_transition(estar, new_bits, clock_tick * 1000,
280 old_divisor, divisor);
281
282 cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
283
284 set_cpus_allowed(current, cpus_allowed);
285}
286
287static int us2e_freq_target(struct cpufreq_policy *policy,
288 unsigned int target_freq,
289 unsigned int relation)
290{
291 unsigned int new_index = 0;
292
293 if (cpufreq_frequency_table_target(policy,
294 &us2e_freq_table[policy->cpu].table[0],
295 target_freq, relation, &new_index))
296 return -EINVAL;
297
298 us2e_set_cpu_divider_index(policy->cpu, new_index);
299
300 return 0;
301}
302
303static int us2e_freq_verify(struct cpufreq_policy *policy)
304{
305 return cpufreq_frequency_table_verify(policy,
306 &us2e_freq_table[policy->cpu].table[0]);
307}
308
309static int __init us2e_freq_cpu_init(struct cpufreq_policy *policy)
310{
311 unsigned int cpu = policy->cpu;
312 unsigned long clock_tick = sparc64_get_clock_tick(cpu) / 1000;
313 struct cpufreq_frequency_table *table =
314 &us2e_freq_table[cpu].table[0];
315
316 table[0].index = 0;
317 table[0].frequency = clock_tick / 1;
318 table[1].index = 1;
319 table[1].frequency = clock_tick / 2;
320 table[2].index = 2;
321 table[2].frequency = clock_tick / 4;
322 table[2].index = 3;
323 table[2].frequency = clock_tick / 6;
324 table[2].index = 4;
325 table[2].frequency = clock_tick / 8;
326 table[2].index = 5;
327 table[3].frequency = CPUFREQ_TABLE_END;
328
329 policy->cpuinfo.transition_latency = 0;
330 policy->cur = clock_tick;
331
332 return cpufreq_frequency_table_cpuinfo(policy, table);
333}
334
335static int us2e_freq_cpu_exit(struct cpufreq_policy *policy)
336{
337 if (cpufreq_us2e_driver)
338 us2e_set_cpu_divider_index(policy->cpu, 0);
339
340 return 0;
341}
342
343static int __init us2e_freq_init(void)
344{
345 unsigned long manuf, impl, ver;
346 int ret;
347
348 if (tlb_type != spitfire)
349 return -ENODEV;
350
351 __asm__("rdpr %%ver, %0" : "=r" (ver));
352 manuf = ((ver >> 48) & 0xffff);
353 impl = ((ver >> 32) & 0xffff);
354
355 if (manuf == 0x17 && impl == 0x13) {
356 struct cpufreq_driver *driver;
357
358 ret = -ENOMEM;
359 driver = kzalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
360 if (!driver)
361 goto err_out;
362
363 us2e_freq_table = kzalloc(
364 (NR_CPUS * sizeof(struct us2e_freq_percpu_info)),
365 GFP_KERNEL);
366 if (!us2e_freq_table)
367 goto err_out;
368
369 driver->init = us2e_freq_cpu_init;
370 driver->verify = us2e_freq_verify;
371 driver->target = us2e_freq_target;
372 driver->get = us2e_freq_get;
373 driver->exit = us2e_freq_cpu_exit;
374 driver->owner = THIS_MODULE,
375 strcpy(driver->name, "UltraSPARC-IIe");
376
377 cpufreq_us2e_driver = driver;
378 ret = cpufreq_register_driver(driver);
379 if (ret)
380 goto err_out;
381
382 return 0;
383
384err_out:
385 if (driver) {
386 kfree(driver);
387 cpufreq_us2e_driver = NULL;
388 }
389 kfree(us2e_freq_table);
390 us2e_freq_table = NULL;
391 return ret;
392 }
393
394 return -ENODEV;
395}
396
397static void __exit us2e_freq_exit(void)
398{
399 if (cpufreq_us2e_driver) {
400 cpufreq_unregister_driver(cpufreq_us2e_driver);
401 kfree(cpufreq_us2e_driver);
402 cpufreq_us2e_driver = NULL;
403 kfree(us2e_freq_table);
404 us2e_freq_table = NULL;
405 }
406}
407
408MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
409MODULE_DESCRIPTION("cpufreq driver for UltraSPARC-IIe");
410MODULE_LICENSE("GPL");
411
412module_init(us2e_freq_init);
413module_exit(us2e_freq_exit);
diff --git a/arch/sparc/kernel/us3_cpufreq.c b/arch/sparc/kernel/us3_cpufreq.c
new file mode 100644
index 000000000000..365b6464e2ce
--- /dev/null
+++ b/arch/sparc/kernel/us3_cpufreq.c
@@ -0,0 +1,274 @@
1/* us3_cpufreq.c: UltraSPARC-III cpu frequency support
2 *
3 * Copyright (C) 2003 David S. Miller (davem@redhat.com)
4 *
5 * Many thanks to Dominik Brodowski for fixing up the cpufreq
6 * infrastructure in order to make this driver easier to implement.
7 */
8
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/sched.h>
12#include <linux/smp.h>
13#include <linux/cpufreq.h>
14#include <linux/threads.h>
15#include <linux/slab.h>
16#include <linux/init.h>
17
18#include <asm/head.h>
19#include <asm/timer.h>
20
21static struct cpufreq_driver *cpufreq_us3_driver;
22
23struct us3_freq_percpu_info {
24 struct cpufreq_frequency_table table[4];
25};
26
27/* Indexed by cpu number. */
28static struct us3_freq_percpu_info *us3_freq_table;
29
30/* UltraSPARC-III has three dividers: 1, 2, and 32. These are controlled
31 * in the Safari config register.
32 */
33#define SAFARI_CFG_DIV_1 0x0000000000000000UL
34#define SAFARI_CFG_DIV_2 0x0000000040000000UL
35#define SAFARI_CFG_DIV_32 0x0000000080000000UL
36#define SAFARI_CFG_DIV_MASK 0x00000000C0000000UL
37
38static unsigned long read_safari_cfg(void)
39{
40 unsigned long ret;
41
42 __asm__ __volatile__("ldxa [%%g0] %1, %0"
43 : "=&r" (ret)
44 : "i" (ASI_SAFARI_CONFIG));
45 return ret;
46}
47
48static void write_safari_cfg(unsigned long val)
49{
50 __asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
51 "membar #Sync"
52 : /* no outputs */
53 : "r" (val), "i" (ASI_SAFARI_CONFIG)
54 : "memory");
55}
56
57static unsigned long get_current_freq(unsigned int cpu, unsigned long safari_cfg)
58{
59 unsigned long clock_tick = sparc64_get_clock_tick(cpu) / 1000;
60 unsigned long ret;
61
62 switch (safari_cfg & SAFARI_CFG_DIV_MASK) {
63 case SAFARI_CFG_DIV_1:
64 ret = clock_tick / 1;
65 break;
66 case SAFARI_CFG_DIV_2:
67 ret = clock_tick / 2;
68 break;
69 case SAFARI_CFG_DIV_32:
70 ret = clock_tick / 32;
71 break;
72 default:
73 BUG();
74 };
75
76 return ret;
77}
78
79static unsigned int us3_freq_get(unsigned int cpu)
80{
81 cpumask_t cpus_allowed;
82 unsigned long reg;
83 unsigned int ret;
84
85 if (!cpu_online(cpu))
86 return 0;
87
88 cpus_allowed = current->cpus_allowed;
89 set_cpus_allowed(current, cpumask_of_cpu(cpu));
90
91 reg = read_safari_cfg();
92 ret = get_current_freq(cpu, reg);
93
94 set_cpus_allowed(current, cpus_allowed);
95
96 return ret;
97}
98
99static void us3_set_cpu_divider_index(unsigned int cpu, unsigned int index)
100{
101 unsigned long new_bits, new_freq, reg;
102 cpumask_t cpus_allowed;
103 struct cpufreq_freqs freqs;
104
105 if (!cpu_online(cpu))
106 return;
107
108 cpus_allowed = current->cpus_allowed;
109 set_cpus_allowed(current, cpumask_of_cpu(cpu));
110
111 new_freq = sparc64_get_clock_tick(cpu) / 1000;
112 switch (index) {
113 case 0:
114 new_bits = SAFARI_CFG_DIV_1;
115 new_freq /= 1;
116 break;
117 case 1:
118 new_bits = SAFARI_CFG_DIV_2;
119 new_freq /= 2;
120 break;
121 case 2:
122 new_bits = SAFARI_CFG_DIV_32;
123 new_freq /= 32;
124 break;
125
126 default:
127 BUG();
128 };
129
130 reg = read_safari_cfg();
131
132 freqs.old = get_current_freq(cpu, reg);
133 freqs.new = new_freq;
134 freqs.cpu = cpu;
135 cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
136
137 reg &= ~SAFARI_CFG_DIV_MASK;
138 reg |= new_bits;
139 write_safari_cfg(reg);
140
141 cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
142
143 set_cpus_allowed(current, cpus_allowed);
144}
145
146static int us3_freq_target(struct cpufreq_policy *policy,
147 unsigned int target_freq,
148 unsigned int relation)
149{
150 unsigned int new_index = 0;
151
152 if (cpufreq_frequency_table_target(policy,
153 &us3_freq_table[policy->cpu].table[0],
154 target_freq,
155 relation,
156 &new_index))
157 return -EINVAL;
158
159 us3_set_cpu_divider_index(policy->cpu, new_index);
160
161 return 0;
162}
163
164static int us3_freq_verify(struct cpufreq_policy *policy)
165{
166 return cpufreq_frequency_table_verify(policy,
167 &us3_freq_table[policy->cpu].table[0]);
168}
169
170static int __init us3_freq_cpu_init(struct cpufreq_policy *policy)
171{
172 unsigned int cpu = policy->cpu;
173 unsigned long clock_tick = sparc64_get_clock_tick(cpu) / 1000;
174 struct cpufreq_frequency_table *table =
175 &us3_freq_table[cpu].table[0];
176
177 table[0].index = 0;
178 table[0].frequency = clock_tick / 1;
179 table[1].index = 1;
180 table[1].frequency = clock_tick / 2;
181 table[2].index = 2;
182 table[2].frequency = clock_tick / 32;
183 table[3].index = 0;
184 table[3].frequency = CPUFREQ_TABLE_END;
185
186 policy->cpuinfo.transition_latency = 0;
187 policy->cur = clock_tick;
188
189 return cpufreq_frequency_table_cpuinfo(policy, table);
190}
191
192static int us3_freq_cpu_exit(struct cpufreq_policy *policy)
193{
194 if (cpufreq_us3_driver)
195 us3_set_cpu_divider_index(policy->cpu, 0);
196
197 return 0;
198}
199
200static int __init us3_freq_init(void)
201{
202 unsigned long manuf, impl, ver;
203 int ret;
204
205 if (tlb_type != cheetah && tlb_type != cheetah_plus)
206 return -ENODEV;
207
208 __asm__("rdpr %%ver, %0" : "=r" (ver));
209 manuf = ((ver >> 48) & 0xffff);
210 impl = ((ver >> 32) & 0xffff);
211
212 if (manuf == CHEETAH_MANUF &&
213 (impl == CHEETAH_IMPL ||
214 impl == CHEETAH_PLUS_IMPL ||
215 impl == JAGUAR_IMPL ||
216 impl == PANTHER_IMPL)) {
217 struct cpufreq_driver *driver;
218
219 ret = -ENOMEM;
220 driver = kzalloc(sizeof(struct cpufreq_driver), GFP_KERNEL);
221 if (!driver)
222 goto err_out;
223
224 us3_freq_table = kzalloc(
225 (NR_CPUS * sizeof(struct us3_freq_percpu_info)),
226 GFP_KERNEL);
227 if (!us3_freq_table)
228 goto err_out;
229
230 driver->init = us3_freq_cpu_init;
231 driver->verify = us3_freq_verify;
232 driver->target = us3_freq_target;
233 driver->get = us3_freq_get;
234 driver->exit = us3_freq_cpu_exit;
235 driver->owner = THIS_MODULE,
236 strcpy(driver->name, "UltraSPARC-III");
237
238 cpufreq_us3_driver = driver;
239 ret = cpufreq_register_driver(driver);
240 if (ret)
241 goto err_out;
242
243 return 0;
244
245err_out:
246 if (driver) {
247 kfree(driver);
248 cpufreq_us3_driver = NULL;
249 }
250 kfree(us3_freq_table);
251 us3_freq_table = NULL;
252 return ret;
253 }
254
255 return -ENODEV;
256}
257
258static void __exit us3_freq_exit(void)
259{
260 if (cpufreq_us3_driver) {
261 cpufreq_unregister_driver(cpufreq_us3_driver);
262 kfree(cpufreq_us3_driver);
263 cpufreq_us3_driver = NULL;
264 kfree(us3_freq_table);
265 us3_freq_table = NULL;
266 }
267}
268
269MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
270MODULE_DESCRIPTION("cpufreq driver for UltraSPARC-III");
271MODULE_LICENSE("GPL");
272
273module_init(us3_freq_init);
274module_exit(us3_freq_exit);
diff --git a/arch/sparc/kernel/utrap.S b/arch/sparc/kernel/utrap.S
new file mode 100644
index 000000000000..b7f0f3f3a909
--- /dev/null
+++ b/arch/sparc/kernel/utrap.S
@@ -0,0 +1,29 @@
1 .globl utrap_trap
2 .type utrap_trap,#function
3utrap_trap: /* %g3=handler,%g4=level */
4 TRAP_LOAD_THREAD_REG(%g6, %g1)
5 ldx [%g6 + TI_UTRAPS], %g1
6 brnz,pt %g1, invoke_utrap
7 nop
8
9 ba,pt %xcc, etrap
10 rd %pc, %g7
11 mov %l4, %o1
12 call bad_trap
13 add %sp, PTREGS_OFF, %o0
14 ba,pt %xcc, rtrap
15 nop
16
17invoke_utrap:
18 sllx %g3, 3, %g3
19 ldx [%g1 + %g3], %g1
20 save %sp, -128, %sp
21 rdpr %tstate, %l6
22 rdpr %cwp, %l7
23 andn %l6, TSTATE_CWP, %l6
24 wrpr %l6, %l7, %tstate
25 rdpr %tpc, %l6
26 rdpr %tnpc, %l7
27 wrpr %g1, 0, %tnpc
28 done
29 .size utrap_trap,.-utrap_trap
diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c
new file mode 100644
index 000000000000..92b1f8ec01de
--- /dev/null
+++ b/arch/sparc/kernel/vio.c
@@ -0,0 +1,451 @@
1/* vio.c: Virtual I/O channel devices probing infrastructure.
2 *
3 * Copyright (c) 2003-2005 IBM Corp.
4 * Dave Engebretsen engebret@us.ibm.com
5 * Santiago Leon santil@us.ibm.com
6 * Hollis Blanchard <hollisb@us.ibm.com>
7 * Stephen Rothwell
8 *
9 * Adapted to sparc64 by David S. Miller davem@davemloft.net
10 */
11
12#include <linux/kernel.h>
13#include <linux/irq.h>
14#include <linux/init.h>
15
16#include <asm/mdesc.h>
17#include <asm/vio.h>
18
19static const struct vio_device_id *vio_match_device(
20 const struct vio_device_id *matches,
21 const struct vio_dev *dev)
22{
23 const char *type, *compat;
24 int len;
25
26 type = dev->type;
27 compat = dev->compat;
28 len = dev->compat_len;
29
30 while (matches->type[0] || matches->compat[0]) {
31 int match = 1;
32 if (matches->type[0])
33 match &= !strcmp(matches->type, type);
34
35 if (matches->compat[0]) {
36 match &= len &&
37 of_find_in_proplist(compat, matches->compat, len);
38 }
39 if (match)
40 return matches;
41 matches++;
42 }
43 return NULL;
44}
45
46static int vio_bus_match(struct device *dev, struct device_driver *drv)
47{
48 struct vio_dev *vio_dev = to_vio_dev(dev);
49 struct vio_driver *vio_drv = to_vio_driver(drv);
50 const struct vio_device_id *matches = vio_drv->id_table;
51
52 if (!matches)
53 return 0;
54
55 return vio_match_device(matches, vio_dev) != NULL;
56}
57
58static int vio_device_probe(struct device *dev)
59{
60 struct vio_dev *vdev = to_vio_dev(dev);
61 struct vio_driver *drv = to_vio_driver(dev->driver);
62 const struct vio_device_id *id;
63 int error = -ENODEV;
64
65 if (drv->probe) {
66 id = vio_match_device(drv->id_table, vdev);
67 if (id)
68 error = drv->probe(vdev, id);
69 }
70
71 return error;
72}
73
74static int vio_device_remove(struct device *dev)
75{
76 struct vio_dev *vdev = to_vio_dev(dev);
77 struct vio_driver *drv = to_vio_driver(dev->driver);
78
79 if (drv->remove)
80 return drv->remove(vdev);
81
82 return 1;
83}
84
85static ssize_t devspec_show(struct device *dev,
86 struct device_attribute *attr, char *buf)
87{
88 struct vio_dev *vdev = to_vio_dev(dev);
89 const char *str = "none";
90
91 if (!strcmp(vdev->type, "vnet-port"))
92 str = "vnet";
93 else if (!strcmp(vdev->type, "vdc-port"))
94 str = "vdisk";
95
96 return sprintf(buf, "%s\n", str);
97}
98
99static ssize_t type_show(struct device *dev,
100 struct device_attribute *attr, char *buf)
101{
102 struct vio_dev *vdev = to_vio_dev(dev);
103 return sprintf(buf, "%s\n", vdev->type);
104}
105
106static struct device_attribute vio_dev_attrs[] = {
107 __ATTR_RO(devspec),
108 __ATTR_RO(type),
109 __ATTR_NULL
110};
111
112static struct bus_type vio_bus_type = {
113 .name = "vio",
114 .dev_attrs = vio_dev_attrs,
115 .match = vio_bus_match,
116 .probe = vio_device_probe,
117 .remove = vio_device_remove,
118};
119
120int vio_register_driver(struct vio_driver *viodrv)
121{
122 viodrv->driver.bus = &vio_bus_type;
123
124 return driver_register(&viodrv->driver);
125}
126EXPORT_SYMBOL(vio_register_driver);
127
128void vio_unregister_driver(struct vio_driver *viodrv)
129{
130 driver_unregister(&viodrv->driver);
131}
132EXPORT_SYMBOL(vio_unregister_driver);
133
134static void vio_dev_release(struct device *dev)
135{
136 kfree(to_vio_dev(dev));
137}
138
139static ssize_t
140show_pciobppath_attr(struct device *dev, struct device_attribute *attr,
141 char *buf)
142{
143 struct vio_dev *vdev;
144 struct device_node *dp;
145
146 vdev = to_vio_dev(dev);
147 dp = vdev->dp;
148
149 return snprintf (buf, PAGE_SIZE, "%s\n", dp->full_name);
150}
151
152static DEVICE_ATTR(obppath, S_IRUSR | S_IRGRP | S_IROTH,
153 show_pciobppath_attr, NULL);
154
155static struct device_node *cdev_node;
156
157static struct vio_dev *root_vdev;
158static u64 cdev_cfg_handle;
159
160static void vio_fill_channel_info(struct mdesc_handle *hp, u64 mp,
161 struct vio_dev *vdev)
162{
163 u64 a;
164
165 mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) {
166 const u64 *chan_id;
167 const u64 *irq;
168 u64 target;
169
170 target = mdesc_arc_target(hp, a);
171
172 irq = mdesc_get_property(hp, target, "tx-ino", NULL);
173 if (irq)
174 vdev->tx_irq = sun4v_build_virq(cdev_cfg_handle, *irq);
175
176 irq = mdesc_get_property(hp, target, "rx-ino", NULL);
177 if (irq)
178 vdev->rx_irq = sun4v_build_virq(cdev_cfg_handle, *irq);
179
180 chan_id = mdesc_get_property(hp, target, "id", NULL);
181 if (chan_id)
182 vdev->channel_id = *chan_id;
183 }
184}
185
186static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp,
187 struct device *parent)
188{
189 const char *type, *compat, *bus_id_name;
190 struct device_node *dp;
191 struct vio_dev *vdev;
192 int err, tlen, clen;
193 const u64 *id, *cfg_handle;
194 u64 a;
195
196 type = mdesc_get_property(hp, mp, "device-type", &tlen);
197 if (!type) {
198 type = mdesc_get_property(hp, mp, "name", &tlen);
199 if (!type) {
200 type = mdesc_node_name(hp, mp);
201 tlen = strlen(type) + 1;
202 }
203 }
204 if (tlen > VIO_MAX_TYPE_LEN) {
205 printk(KERN_ERR "VIO: Type string [%s] is too long.\n",
206 type);
207 return NULL;
208 }
209
210 id = mdesc_get_property(hp, mp, "id", NULL);
211
212 cfg_handle = NULL;
213 mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) {
214 u64 target;
215
216 target = mdesc_arc_target(hp, a);
217 cfg_handle = mdesc_get_property(hp, target,
218 "cfg-handle", NULL);
219 if (cfg_handle)
220 break;
221 }
222
223 bus_id_name = type;
224 if (!strcmp(type, "domain-services-port"))
225 bus_id_name = "ds";
226
227 if (strlen(bus_id_name) >= BUS_ID_SIZE - 4) {
228 printk(KERN_ERR "VIO: bus_id_name [%s] is too long.\n",
229 bus_id_name);
230 return NULL;
231 }
232
233 compat = mdesc_get_property(hp, mp, "device-type", &clen);
234 if (!compat) {
235 clen = 0;
236 } else if (clen > VIO_MAX_COMPAT_LEN) {
237 printk(KERN_ERR "VIO: Compat len %d for [%s] is too long.\n",
238 clen, type);
239 return NULL;
240 }
241
242 vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
243 if (!vdev) {
244 printk(KERN_ERR "VIO: Could not allocate vio_dev\n");
245 return NULL;
246 }
247
248 vdev->mp = mp;
249 memcpy(vdev->type, type, tlen);
250 if (compat)
251 memcpy(vdev->compat, compat, clen);
252 else
253 memset(vdev->compat, 0, sizeof(vdev->compat));
254 vdev->compat_len = clen;
255
256 vdev->channel_id = ~0UL;
257 vdev->tx_irq = ~0;
258 vdev->rx_irq = ~0;
259
260 vio_fill_channel_info(hp, mp, vdev);
261
262 if (!id) {
263 dev_set_name(&vdev->dev, "%s", bus_id_name);
264 vdev->dev_no = ~(u64)0;
265 } else if (!cfg_handle) {
266 dev_set_name(&vdev->dev, "%s-%lu", bus_id_name, *id);
267 vdev->dev_no = *id;
268 } else {
269 dev_set_name(&vdev->dev, "%s-%lu-%lu", bus_id_name,
270 *cfg_handle, *id);
271 vdev->dev_no = *cfg_handle;
272 }
273
274 vdev->dev.parent = parent;
275 vdev->dev.bus = &vio_bus_type;
276 vdev->dev.release = vio_dev_release;
277
278 if (parent == NULL) {
279 dp = cdev_node;
280 } else if (to_vio_dev(parent) == root_vdev) {
281 dp = of_get_next_child(cdev_node, NULL);
282 while (dp) {
283 if (!strcmp(dp->type, type))
284 break;
285
286 dp = of_get_next_child(cdev_node, dp);
287 }
288 } else {
289 dp = to_vio_dev(parent)->dp;
290 }
291 vdev->dp = dp;
292
293 printk(KERN_INFO "VIO: Adding device %s\n", dev_name(&vdev->dev));
294
295 err = device_register(&vdev->dev);
296 if (err) {
297 printk(KERN_ERR "VIO: Could not register device %s, err=%d\n",
298 dev_name(&vdev->dev), err);
299 kfree(vdev);
300 return NULL;
301 }
302 if (vdev->dp)
303 err = sysfs_create_file(&vdev->dev.kobj,
304 &dev_attr_obppath.attr);
305
306 return vdev;
307}
308
309static void vio_add(struct mdesc_handle *hp, u64 node)
310{
311 (void) vio_create_one(hp, node, &root_vdev->dev);
312}
313
314static int vio_md_node_match(struct device *dev, void *arg)
315{
316 struct vio_dev *vdev = to_vio_dev(dev);
317
318 if (vdev->mp == (u64) arg)
319 return 1;
320
321 return 0;
322}
323
324static void vio_remove(struct mdesc_handle *hp, u64 node)
325{
326 struct device *dev;
327
328 dev = device_find_child(&root_vdev->dev, (void *) node,
329 vio_md_node_match);
330 if (dev) {
331 printk(KERN_INFO "VIO: Removing device %s\n", dev_name(dev));
332
333 device_unregister(dev);
334 }
335}
336
337static struct mdesc_notifier_client vio_device_notifier = {
338 .add = vio_add,
339 .remove = vio_remove,
340 .node_name = "virtual-device-port",
341};
342
343/* We are only interested in domain service ports under the
344 * "domain-services" node. On control nodes there is another port
345 * under "openboot" that we should not mess with as aparently that is
346 * reserved exclusively for OBP use.
347 */
348static void vio_add_ds(struct mdesc_handle *hp, u64 node)
349{
350 int found;
351 u64 a;
352
353 found = 0;
354 mdesc_for_each_arc(a, hp, node, MDESC_ARC_TYPE_BACK) {
355 u64 target = mdesc_arc_target(hp, a);
356 const char *name = mdesc_node_name(hp, target);
357
358 if (!strcmp(name, "domain-services")) {
359 found = 1;
360 break;
361 }
362 }
363
364 if (found)
365 (void) vio_create_one(hp, node, &root_vdev->dev);
366}
367
368static struct mdesc_notifier_client vio_ds_notifier = {
369 .add = vio_add_ds,
370 .remove = vio_remove,
371 .node_name = "domain-services-port",
372};
373
374static const char *channel_devices_node = "channel-devices";
375static const char *channel_devices_compat = "SUNW,sun4v-channel-devices";
376static const char *cfg_handle_prop = "cfg-handle";
377
378static int __init vio_init(void)
379{
380 struct mdesc_handle *hp;
381 const char *compat;
382 const u64 *cfg_handle;
383 int err, len;
384 u64 root;
385
386 err = bus_register(&vio_bus_type);
387 if (err) {
388 printk(KERN_ERR "VIO: Could not register bus type err=%d\n",
389 err);
390 return err;
391 }
392
393 hp = mdesc_grab();
394 if (!hp)
395 return 0;
396
397 root = mdesc_node_by_name(hp, MDESC_NODE_NULL, channel_devices_node);
398 if (root == MDESC_NODE_NULL) {
399 printk(KERN_INFO "VIO: No channel-devices MDESC node.\n");
400 mdesc_release(hp);
401 return 0;
402 }
403
404 cdev_node = of_find_node_by_name(NULL, "channel-devices");
405 err = -ENODEV;
406 if (!cdev_node) {
407 printk(KERN_INFO "VIO: No channel-devices OBP node.\n");
408 goto out_release;
409 }
410
411 compat = mdesc_get_property(hp, root, "compatible", &len);
412 if (!compat) {
413 printk(KERN_ERR "VIO: Channel devices lacks compatible "
414 "property\n");
415 goto out_release;
416 }
417 if (!of_find_in_proplist(compat, channel_devices_compat, len)) {
418 printk(KERN_ERR "VIO: Channel devices node lacks (%s) "
419 "compat entry.\n", channel_devices_compat);
420 goto out_release;
421 }
422
423 cfg_handle = mdesc_get_property(hp, root, cfg_handle_prop, NULL);
424 if (!cfg_handle) {
425 printk(KERN_ERR "VIO: Channel devices lacks %s property\n",
426 cfg_handle_prop);
427 goto out_release;
428 }
429
430 cdev_cfg_handle = *cfg_handle;
431
432 root_vdev = vio_create_one(hp, root, NULL);
433 err = -ENODEV;
434 if (!root_vdev) {
435 printk(KERN_ERR "VIO: Coult not create root device.\n");
436 goto out_release;
437 }
438
439 mdesc_register_notifier(&vio_device_notifier);
440 mdesc_register_notifier(&vio_ds_notifier);
441
442 mdesc_release(hp);
443
444 return err;
445
446out_release:
447 mdesc_release(hp);
448 return err;
449}
450
451postcore_initcall(vio_init);
diff --git a/arch/sparc/kernel/viohs.c b/arch/sparc/kernel/viohs.c
new file mode 100644
index 000000000000..708fa1705fbe
--- /dev/null
+++ b/arch/sparc/kernel/viohs.c
@@ -0,0 +1,822 @@
1/* viohs.c: LDOM Virtual I/O handshake helper layer.
2 *
3 * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
4 */
5
6#include <linux/kernel.h>
7#include <linux/module.h>
8#include <linux/string.h>
9#include <linux/delay.h>
10#include <linux/sched.h>
11#include <linux/slab.h>
12
13#include <asm/ldc.h>
14#include <asm/vio.h>
15
16int vio_ldc_send(struct vio_driver_state *vio, void *data, int len)
17{
18 int err, limit = 1000;
19
20 err = -EINVAL;
21 while (limit-- > 0) {
22 err = ldc_write(vio->lp, data, len);
23 if (!err || (err != -EAGAIN))
24 break;
25 udelay(1);
26 }
27
28 return err;
29}
30EXPORT_SYMBOL(vio_ldc_send);
31
32static int send_ctrl(struct vio_driver_state *vio,
33 struct vio_msg_tag *tag, int len)
34{
35 tag->sid = vio_send_sid(vio);
36 return vio_ldc_send(vio, tag, len);
37}
38
39static void init_tag(struct vio_msg_tag *tag, u8 type, u8 stype, u16 stype_env)
40{
41 tag->type = type;
42 tag->stype = stype;
43 tag->stype_env = stype_env;
44}
45
46static int send_version(struct vio_driver_state *vio, u16 major, u16 minor)
47{
48 struct vio_ver_info pkt;
49
50 vio->_local_sid = (u32) sched_clock();
51
52 memset(&pkt, 0, sizeof(pkt));
53 init_tag(&pkt.tag, VIO_TYPE_CTRL, VIO_SUBTYPE_INFO, VIO_VER_INFO);
54 pkt.major = major;
55 pkt.minor = minor;
56 pkt.dev_class = vio->dev_class;
57
58 viodbg(HS, "SEND VERSION INFO maj[%u] min[%u] devclass[%u]\n",
59 major, minor, vio->dev_class);
60
61 return send_ctrl(vio, &pkt.tag, sizeof(pkt));
62}
63
64static int start_handshake(struct vio_driver_state *vio)
65{
66 int err;
67
68 viodbg(HS, "START HANDSHAKE\n");
69
70 vio->hs_state = VIO_HS_INVALID;
71
72 err = send_version(vio,
73 vio->ver_table[0].major,
74 vio->ver_table[0].minor);
75 if (err < 0)
76 return err;
77
78 return 0;
79}
80
81static void flush_rx_dring(struct vio_driver_state *vio)
82{
83 struct vio_dring_state *dr;
84 u64 ident;
85
86 BUG_ON(!(vio->dr_state & VIO_DR_STATE_RXREG));
87
88 dr = &vio->drings[VIO_DRIVER_RX_RING];
89 ident = dr->ident;
90
91 BUG_ON(!vio->desc_buf);
92 kfree(vio->desc_buf);
93 vio->desc_buf = NULL;
94
95 memset(dr, 0, sizeof(*dr));
96 dr->ident = ident;
97}
98
99void vio_link_state_change(struct vio_driver_state *vio, int event)
100{
101 if (event == LDC_EVENT_UP) {
102 vio->hs_state = VIO_HS_INVALID;
103
104 switch (vio->dev_class) {
105 case VDEV_NETWORK:
106 case VDEV_NETWORK_SWITCH:
107 vio->dr_state = (VIO_DR_STATE_TXREQ |
108 VIO_DR_STATE_RXREQ);
109 break;
110
111 case VDEV_DISK:
112 vio->dr_state = VIO_DR_STATE_TXREQ;
113 break;
114 case VDEV_DISK_SERVER:
115 vio->dr_state = VIO_DR_STATE_RXREQ;
116 break;
117 }
118 start_handshake(vio);
119 } else if (event == LDC_EVENT_RESET) {
120 vio->hs_state = VIO_HS_INVALID;
121
122 if (vio->dr_state & VIO_DR_STATE_RXREG)
123 flush_rx_dring(vio);
124
125 vio->dr_state = 0x00;
126 memset(&vio->ver, 0, sizeof(vio->ver));
127
128 ldc_disconnect(vio->lp);
129 }
130}
131EXPORT_SYMBOL(vio_link_state_change);
132
133static int handshake_failure(struct vio_driver_state *vio)
134{
135 struct vio_dring_state *dr;
136
137 /* XXX Put policy here... Perhaps start a timer to fire
138 * XXX in 100 ms, which will bring the link up and retry
139 * XXX the handshake.
140 */
141
142 viodbg(HS, "HANDSHAKE FAILURE\n");
143
144 vio->dr_state &= ~(VIO_DR_STATE_TXREG |
145 VIO_DR_STATE_RXREG);
146
147 dr = &vio->drings[VIO_DRIVER_RX_RING];
148 memset(dr, 0, sizeof(*dr));
149
150 kfree(vio->desc_buf);
151 vio->desc_buf = NULL;
152 vio->desc_buf_len = 0;
153
154 vio->hs_state = VIO_HS_INVALID;
155
156 return -ECONNRESET;
157}
158
159static int process_unknown(struct vio_driver_state *vio, void *arg)
160{
161 struct vio_msg_tag *pkt = arg;
162
163 viodbg(HS, "UNKNOWN CONTROL [%02x:%02x:%04x:%08x]\n",
164 pkt->type, pkt->stype, pkt->stype_env, pkt->sid);
165
166 printk(KERN_ERR "vio: ID[%lu] Resetting connection.\n",
167 vio->vdev->channel_id);
168
169 ldc_disconnect(vio->lp);
170
171 return -ECONNRESET;
172}
173
174static int send_dreg(struct vio_driver_state *vio)
175{
176 struct vio_dring_state *dr = &vio->drings[VIO_DRIVER_TX_RING];
177 union {
178 struct vio_dring_register pkt;
179 char all[sizeof(struct vio_dring_register) +
180 (sizeof(struct ldc_trans_cookie) *
181 dr->ncookies)];
182 } u;
183 int i;
184
185 memset(&u, 0, sizeof(u));
186 init_tag(&u.pkt.tag, VIO_TYPE_CTRL, VIO_SUBTYPE_INFO, VIO_DRING_REG);
187 u.pkt.dring_ident = 0;
188 u.pkt.num_descr = dr->num_entries;
189 u.pkt.descr_size = dr->entry_size;
190 u.pkt.options = VIO_TX_DRING;
191 u.pkt.num_cookies = dr->ncookies;
192
193 viodbg(HS, "SEND DRING_REG INFO ndesc[%u] dsz[%u] opt[0x%x] "
194 "ncookies[%u]\n",
195 u.pkt.num_descr, u.pkt.descr_size, u.pkt.options,
196 u.pkt.num_cookies);
197
198 for (i = 0; i < dr->ncookies; i++) {
199 u.pkt.cookies[i] = dr->cookies[i];
200
201 viodbg(HS, "DRING COOKIE(%d) [%016llx:%016llx]\n",
202 i,
203 (unsigned long long) u.pkt.cookies[i].cookie_addr,
204 (unsigned long long) u.pkt.cookies[i].cookie_size);
205 }
206
207 return send_ctrl(vio, &u.pkt.tag, sizeof(u));
208}
209
210static int send_rdx(struct vio_driver_state *vio)
211{
212 struct vio_rdx pkt;
213
214 memset(&pkt, 0, sizeof(pkt));
215
216 init_tag(&pkt.tag, VIO_TYPE_CTRL, VIO_SUBTYPE_INFO, VIO_RDX);
217
218 viodbg(HS, "SEND RDX INFO\n");
219
220 return send_ctrl(vio, &pkt.tag, sizeof(pkt));
221}
222
223static int send_attr(struct vio_driver_state *vio)
224{
225 return vio->ops->send_attr(vio);
226}
227
228static struct vio_version *find_by_major(struct vio_driver_state *vio,
229 u16 major)
230{
231 struct vio_version *ret = NULL;
232 int i;
233
234 for (i = 0; i < vio->ver_table_entries; i++) {
235 struct vio_version *v = &vio->ver_table[i];
236 if (v->major <= major) {
237 ret = v;
238 break;
239 }
240 }
241 return ret;
242}
243
244static int process_ver_info(struct vio_driver_state *vio,
245 struct vio_ver_info *pkt)
246{
247 struct vio_version *vap;
248 int err;
249
250 viodbg(HS, "GOT VERSION INFO maj[%u] min[%u] devclass[%u]\n",
251 pkt->major, pkt->minor, pkt->dev_class);
252
253 if (vio->hs_state != VIO_HS_INVALID) {
254 /* XXX Perhaps invoke start_handshake? XXX */
255 memset(&vio->ver, 0, sizeof(vio->ver));
256 vio->hs_state = VIO_HS_INVALID;
257 }
258
259 vap = find_by_major(vio, pkt->major);
260
261 vio->_peer_sid = pkt->tag.sid;
262
263 if (!vap) {
264 pkt->tag.stype = VIO_SUBTYPE_NACK;
265 pkt->major = 0;
266 pkt->minor = 0;
267 viodbg(HS, "SEND VERSION NACK maj[0] min[0]\n");
268 err = send_ctrl(vio, &pkt->tag, sizeof(*pkt));
269 } else if (vap->major != pkt->major) {
270 pkt->tag.stype = VIO_SUBTYPE_NACK;
271 pkt->major = vap->major;
272 pkt->minor = vap->minor;
273 viodbg(HS, "SEND VERSION NACK maj[%u] min[%u]\n",
274 pkt->major, pkt->minor);
275 err = send_ctrl(vio, &pkt->tag, sizeof(*pkt));
276 } else {
277 struct vio_version ver = {
278 .major = pkt->major,
279 .minor = pkt->minor,
280 };
281 if (ver.minor > vap->minor)
282 ver.minor = vap->minor;
283 pkt->minor = ver.minor;
284 pkt->tag.stype = VIO_SUBTYPE_ACK;
285 viodbg(HS, "SEND VERSION ACK maj[%u] min[%u]\n",
286 pkt->major, pkt->minor);
287 err = send_ctrl(vio, &pkt->tag, sizeof(*pkt));
288 if (err > 0) {
289 vio->ver = ver;
290 vio->hs_state = VIO_HS_GOTVERS;
291 }
292 }
293 if (err < 0)
294 return handshake_failure(vio);
295
296 return 0;
297}
298
299static int process_ver_ack(struct vio_driver_state *vio,
300 struct vio_ver_info *pkt)
301{
302 viodbg(HS, "GOT VERSION ACK maj[%u] min[%u] devclass[%u]\n",
303 pkt->major, pkt->minor, pkt->dev_class);
304
305 if (vio->hs_state & VIO_HS_GOTVERS) {
306 if (vio->ver.major != pkt->major ||
307 vio->ver.minor != pkt->minor) {
308 pkt->tag.stype = VIO_SUBTYPE_NACK;
309 (void) send_ctrl(vio, &pkt->tag, sizeof(*pkt));
310 return handshake_failure(vio);
311 }
312 } else {
313 vio->ver.major = pkt->major;
314 vio->ver.minor = pkt->minor;
315 vio->hs_state = VIO_HS_GOTVERS;
316 }
317
318 switch (vio->dev_class) {
319 case VDEV_NETWORK:
320 case VDEV_DISK:
321 if (send_attr(vio) < 0)
322 return handshake_failure(vio);
323 break;
324
325 default:
326 break;
327 }
328
329 return 0;
330}
331
332static int process_ver_nack(struct vio_driver_state *vio,
333 struct vio_ver_info *pkt)
334{
335 struct vio_version *nver;
336
337 viodbg(HS, "GOT VERSION NACK maj[%u] min[%u] devclass[%u]\n",
338 pkt->major, pkt->minor, pkt->dev_class);
339
340 if ((pkt->major == 0 && pkt->minor == 0) ||
341 !(nver = find_by_major(vio, pkt->major)))
342 return handshake_failure(vio);
343
344 if (send_version(vio, nver->major, nver->minor) < 0)
345 return handshake_failure(vio);
346
347 return 0;
348}
349
350static int process_ver(struct vio_driver_state *vio, struct vio_ver_info *pkt)
351{
352 switch (pkt->tag.stype) {
353 case VIO_SUBTYPE_INFO:
354 return process_ver_info(vio, pkt);
355
356 case VIO_SUBTYPE_ACK:
357 return process_ver_ack(vio, pkt);
358
359 case VIO_SUBTYPE_NACK:
360 return process_ver_nack(vio, pkt);
361
362 default:
363 return handshake_failure(vio);
364 };
365}
366
367static int process_attr(struct vio_driver_state *vio, void *pkt)
368{
369 int err;
370
371 if (!(vio->hs_state & VIO_HS_GOTVERS))
372 return handshake_failure(vio);
373
374 err = vio->ops->handle_attr(vio, pkt);
375 if (err < 0) {
376 return handshake_failure(vio);
377 } else {
378 vio->hs_state |= VIO_HS_GOT_ATTR;
379
380 if ((vio->dr_state & VIO_DR_STATE_TXREQ) &&
381 !(vio->hs_state & VIO_HS_SENT_DREG)) {
382 if (send_dreg(vio) < 0)
383 return handshake_failure(vio);
384
385 vio->hs_state |= VIO_HS_SENT_DREG;
386 }
387 }
388 return 0;
389}
390
391static int all_drings_registered(struct vio_driver_state *vio)
392{
393 int need_rx, need_tx;
394
395 need_rx = (vio->dr_state & VIO_DR_STATE_RXREQ);
396 need_tx = (vio->dr_state & VIO_DR_STATE_TXREQ);
397
398 if (need_rx &&
399 !(vio->dr_state & VIO_DR_STATE_RXREG))
400 return 0;
401
402 if (need_tx &&
403 !(vio->dr_state & VIO_DR_STATE_TXREG))
404 return 0;
405
406 return 1;
407}
408
409static int process_dreg_info(struct vio_driver_state *vio,
410 struct vio_dring_register *pkt)
411{
412 struct vio_dring_state *dr;
413 int i, len;
414
415 viodbg(HS, "GOT DRING_REG INFO ident[%llx] "
416 "ndesc[%u] dsz[%u] opt[0x%x] ncookies[%u]\n",
417 (unsigned long long) pkt->dring_ident,
418 pkt->num_descr, pkt->descr_size, pkt->options,
419 pkt->num_cookies);
420
421 if (!(vio->dr_state & VIO_DR_STATE_RXREQ))
422 goto send_nack;
423
424 if (vio->dr_state & VIO_DR_STATE_RXREG)
425 goto send_nack;
426
427 BUG_ON(vio->desc_buf);
428
429 vio->desc_buf = kzalloc(pkt->descr_size, GFP_ATOMIC);
430 if (!vio->desc_buf)
431 goto send_nack;
432
433 vio->desc_buf_len = pkt->descr_size;
434
435 dr = &vio->drings[VIO_DRIVER_RX_RING];
436
437 dr->num_entries = pkt->num_descr;
438 dr->entry_size = pkt->descr_size;
439 dr->ncookies = pkt->num_cookies;
440 for (i = 0; i < dr->ncookies; i++) {
441 dr->cookies[i] = pkt->cookies[i];
442
443 viodbg(HS, "DRING COOKIE(%d) [%016llx:%016llx]\n",
444 i,
445 (unsigned long long)
446 pkt->cookies[i].cookie_addr,
447 (unsigned long long)
448 pkt->cookies[i].cookie_size);
449 }
450
451 pkt->tag.stype = VIO_SUBTYPE_ACK;
452 pkt->dring_ident = ++dr->ident;
453
454 viodbg(HS, "SEND DRING_REG ACK ident[%llx]\n",
455 (unsigned long long) pkt->dring_ident);
456
457 len = (sizeof(*pkt) +
458 (dr->ncookies * sizeof(struct ldc_trans_cookie)));
459 if (send_ctrl(vio, &pkt->tag, len) < 0)
460 goto send_nack;
461
462 vio->dr_state |= VIO_DR_STATE_RXREG;
463
464 return 0;
465
466send_nack:
467 pkt->tag.stype = VIO_SUBTYPE_NACK;
468 viodbg(HS, "SEND DRING_REG NACK\n");
469 (void) send_ctrl(vio, &pkt->tag, sizeof(*pkt));
470
471 return handshake_failure(vio);
472}
473
474static int process_dreg_ack(struct vio_driver_state *vio,
475 struct vio_dring_register *pkt)
476{
477 struct vio_dring_state *dr;
478
479 viodbg(HS, "GOT DRING_REG ACK ident[%llx] "
480 "ndesc[%u] dsz[%u] opt[0x%x] ncookies[%u]\n",
481 (unsigned long long) pkt->dring_ident,
482 pkt->num_descr, pkt->descr_size, pkt->options,
483 pkt->num_cookies);
484
485 dr = &vio->drings[VIO_DRIVER_TX_RING];
486
487 if (!(vio->dr_state & VIO_DR_STATE_TXREQ))
488 return handshake_failure(vio);
489
490 dr->ident = pkt->dring_ident;
491 vio->dr_state |= VIO_DR_STATE_TXREG;
492
493 if (all_drings_registered(vio)) {
494 if (send_rdx(vio) < 0)
495 return handshake_failure(vio);
496 vio->hs_state = VIO_HS_SENT_RDX;
497 }
498 return 0;
499}
500
501static int process_dreg_nack(struct vio_driver_state *vio,
502 struct vio_dring_register *pkt)
503{
504 viodbg(HS, "GOT DRING_REG NACK ident[%llx] "
505 "ndesc[%u] dsz[%u] opt[0x%x] ncookies[%u]\n",
506 (unsigned long long) pkt->dring_ident,
507 pkt->num_descr, pkt->descr_size, pkt->options,
508 pkt->num_cookies);
509
510 return handshake_failure(vio);
511}
512
513static int process_dreg(struct vio_driver_state *vio,
514 struct vio_dring_register *pkt)
515{
516 if (!(vio->hs_state & VIO_HS_GOTVERS))
517 return handshake_failure(vio);
518
519 switch (pkt->tag.stype) {
520 case VIO_SUBTYPE_INFO:
521 return process_dreg_info(vio, pkt);
522
523 case VIO_SUBTYPE_ACK:
524 return process_dreg_ack(vio, pkt);
525
526 case VIO_SUBTYPE_NACK:
527 return process_dreg_nack(vio, pkt);
528
529 default:
530 return handshake_failure(vio);
531 }
532}
533
534static int process_dunreg(struct vio_driver_state *vio,
535 struct vio_dring_unregister *pkt)
536{
537 struct vio_dring_state *dr = &vio->drings[VIO_DRIVER_RX_RING];
538
539 viodbg(HS, "GOT DRING_UNREG\n");
540
541 if (pkt->dring_ident != dr->ident)
542 return 0;
543
544 vio->dr_state &= ~VIO_DR_STATE_RXREG;
545
546 memset(dr, 0, sizeof(*dr));
547
548 kfree(vio->desc_buf);
549 vio->desc_buf = NULL;
550 vio->desc_buf_len = 0;
551
552 return 0;
553}
554
555static int process_rdx_info(struct vio_driver_state *vio, struct vio_rdx *pkt)
556{
557 viodbg(HS, "GOT RDX INFO\n");
558
559 pkt->tag.stype = VIO_SUBTYPE_ACK;
560 viodbg(HS, "SEND RDX ACK\n");
561 if (send_ctrl(vio, &pkt->tag, sizeof(*pkt)) < 0)
562 return handshake_failure(vio);
563
564 vio->hs_state |= VIO_HS_SENT_RDX_ACK;
565 return 0;
566}
567
568static int process_rdx_ack(struct vio_driver_state *vio, struct vio_rdx *pkt)
569{
570 viodbg(HS, "GOT RDX ACK\n");
571
572 if (!(vio->hs_state & VIO_HS_SENT_RDX))
573 return handshake_failure(vio);
574
575 vio->hs_state |= VIO_HS_GOT_RDX_ACK;
576 return 0;
577}
578
579static int process_rdx_nack(struct vio_driver_state *vio, struct vio_rdx *pkt)
580{
581 viodbg(HS, "GOT RDX NACK\n");
582
583 return handshake_failure(vio);
584}
585
586static int process_rdx(struct vio_driver_state *vio, struct vio_rdx *pkt)
587{
588 if (!all_drings_registered(vio))
589 handshake_failure(vio);
590
591 switch (pkt->tag.stype) {
592 case VIO_SUBTYPE_INFO:
593 return process_rdx_info(vio, pkt);
594
595 case VIO_SUBTYPE_ACK:
596 return process_rdx_ack(vio, pkt);
597
598 case VIO_SUBTYPE_NACK:
599 return process_rdx_nack(vio, pkt);
600
601 default:
602 return handshake_failure(vio);
603 }
604}
605
606int vio_control_pkt_engine(struct vio_driver_state *vio, void *pkt)
607{
608 struct vio_msg_tag *tag = pkt;
609 u8 prev_state = vio->hs_state;
610 int err;
611
612 switch (tag->stype_env) {
613 case VIO_VER_INFO:
614 err = process_ver(vio, pkt);
615 break;
616
617 case VIO_ATTR_INFO:
618 err = process_attr(vio, pkt);
619 break;
620
621 case VIO_DRING_REG:
622 err = process_dreg(vio, pkt);
623 break;
624
625 case VIO_DRING_UNREG:
626 err = process_dunreg(vio, pkt);
627 break;
628
629 case VIO_RDX:
630 err = process_rdx(vio, pkt);
631 break;
632
633 default:
634 err = process_unknown(vio, pkt);
635 break;
636 }
637 if (!err &&
638 vio->hs_state != prev_state &&
639 (vio->hs_state & VIO_HS_COMPLETE))
640 vio->ops->handshake_complete(vio);
641
642 return err;
643}
644EXPORT_SYMBOL(vio_control_pkt_engine);
645
646void vio_conn_reset(struct vio_driver_state *vio)
647{
648}
649EXPORT_SYMBOL(vio_conn_reset);
650
651/* The issue is that the Solaris virtual disk server just mirrors the
652 * SID values it gets from the client peer. So we work around that
653 * here in vio_{validate,send}_sid() so that the drivers don't need
654 * to be aware of this crap.
655 */
656int vio_validate_sid(struct vio_driver_state *vio, struct vio_msg_tag *tp)
657{
658 u32 sid;
659
660 /* Always let VERSION+INFO packets through unchecked, they
661 * define the new SID.
662 */
663 if (tp->type == VIO_TYPE_CTRL &&
664 tp->stype == VIO_SUBTYPE_INFO &&
665 tp->stype_env == VIO_VER_INFO)
666 return 0;
667
668 /* Ok, now figure out which SID to use. */
669 switch (vio->dev_class) {
670 case VDEV_NETWORK:
671 case VDEV_NETWORK_SWITCH:
672 case VDEV_DISK_SERVER:
673 default:
674 sid = vio->_peer_sid;
675 break;
676
677 case VDEV_DISK:
678 sid = vio->_local_sid;
679 break;
680 }
681
682 if (sid == tp->sid)
683 return 0;
684 viodbg(DATA, "BAD SID tag->sid[%08x] peer_sid[%08x] local_sid[%08x]\n",
685 tp->sid, vio->_peer_sid, vio->_local_sid);
686 return -EINVAL;
687}
688EXPORT_SYMBOL(vio_validate_sid);
689
690u32 vio_send_sid(struct vio_driver_state *vio)
691{
692 switch (vio->dev_class) {
693 case VDEV_NETWORK:
694 case VDEV_NETWORK_SWITCH:
695 case VDEV_DISK:
696 default:
697 return vio->_local_sid;
698
699 case VDEV_DISK_SERVER:
700 return vio->_peer_sid;
701 }
702}
703EXPORT_SYMBOL(vio_send_sid);
704
705int vio_ldc_alloc(struct vio_driver_state *vio,
706 struct ldc_channel_config *base_cfg,
707 void *event_arg)
708{
709 struct ldc_channel_config cfg = *base_cfg;
710 struct ldc_channel *lp;
711
712 cfg.tx_irq = vio->vdev->tx_irq;
713 cfg.rx_irq = vio->vdev->rx_irq;
714
715 lp = ldc_alloc(vio->vdev->channel_id, &cfg, event_arg);
716 if (IS_ERR(lp))
717 return PTR_ERR(lp);
718
719 vio->lp = lp;
720
721 return 0;
722}
723EXPORT_SYMBOL(vio_ldc_alloc);
724
725void vio_ldc_free(struct vio_driver_state *vio)
726{
727 ldc_free(vio->lp);
728 vio->lp = NULL;
729
730 kfree(vio->desc_buf);
731 vio->desc_buf = NULL;
732 vio->desc_buf_len = 0;
733}
734EXPORT_SYMBOL(vio_ldc_free);
735
736void vio_port_up(struct vio_driver_state *vio)
737{
738 unsigned long flags;
739 int err, state;
740
741 spin_lock_irqsave(&vio->lock, flags);
742
743 state = ldc_state(vio->lp);
744
745 err = 0;
746 if (state == LDC_STATE_INIT) {
747 err = ldc_bind(vio->lp, vio->name);
748 if (err)
749 printk(KERN_WARNING "%s: Port %lu bind failed, "
750 "err=%d\n",
751 vio->name, vio->vdev->channel_id, err);
752 }
753
754 if (!err) {
755 err = ldc_connect(vio->lp);
756 if (err)
757 printk(KERN_WARNING "%s: Port %lu connect failed, "
758 "err=%d\n",
759 vio->name, vio->vdev->channel_id, err);
760 }
761 if (err) {
762 unsigned long expires = jiffies + HZ;
763
764 expires = round_jiffies(expires);
765 mod_timer(&vio->timer, expires);
766 }
767
768 spin_unlock_irqrestore(&vio->lock, flags);
769}
770EXPORT_SYMBOL(vio_port_up);
771
772static void vio_port_timer(unsigned long _arg)
773{
774 struct vio_driver_state *vio = (struct vio_driver_state *) _arg;
775
776 vio_port_up(vio);
777}
778
779int vio_driver_init(struct vio_driver_state *vio, struct vio_dev *vdev,
780 u8 dev_class, struct vio_version *ver_table,
781 int ver_table_size, struct vio_driver_ops *ops,
782 char *name)
783{
784 switch (dev_class) {
785 case VDEV_NETWORK:
786 case VDEV_NETWORK_SWITCH:
787 case VDEV_DISK:
788 case VDEV_DISK_SERVER:
789 break;
790
791 default:
792 return -EINVAL;
793 }
794
795 if (!ops->send_attr ||
796 !ops->handle_attr ||
797 !ops->handshake_complete)
798 return -EINVAL;
799
800 if (!ver_table || ver_table_size < 0)
801 return -EINVAL;
802
803 if (!name)
804 return -EINVAL;
805
806 spin_lock_init(&vio->lock);
807
808 vio->name = name;
809
810 vio->dev_class = dev_class;
811 vio->vdev = vdev;
812
813 vio->ver_table = ver_table;
814 vio->ver_table_entries = ver_table_size;
815
816 vio->ops = ops;
817
818 setup_timer(&vio->timer, vio_port_timer, (unsigned long) vio);
819
820 return 0;
821}
822EXPORT_SYMBOL(vio_driver_init);
diff --git a/arch/sparc/kernel/visemul.c b/arch/sparc/kernel/visemul.c
new file mode 100644
index 000000000000..b956fd71c131
--- /dev/null
+++ b/arch/sparc/kernel/visemul.c
@@ -0,0 +1,890 @@
1/* visemul.c: Emulation of VIS instructions.
2 *
3 * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
4 */
5#include <linux/kernel.h>
6#include <linux/errno.h>
7#include <linux/thread_info.h>
8
9#include <asm/ptrace.h>
10#include <asm/pstate.h>
11#include <asm/system.h>
12#include <asm/fpumacro.h>
13#include <asm/uaccess.h>
14
15/* OPF field of various VIS instructions. */
16
17/* 000111011 - four 16-bit packs */
18#define FPACK16_OPF 0x03b
19
20/* 000111010 - two 32-bit packs */
21#define FPACK32_OPF 0x03a
22
23/* 000111101 - four 16-bit packs */
24#define FPACKFIX_OPF 0x03d
25
26/* 001001101 - four 16-bit expands */
27#define FEXPAND_OPF 0x04d
28
29/* 001001011 - two 32-bit merges */
30#define FPMERGE_OPF 0x04b
31
32/* 000110001 - 8-by-16-bit partitoned product */
33#define FMUL8x16_OPF 0x031
34
35/* 000110011 - 8-by-16-bit upper alpha partitioned product */
36#define FMUL8x16AU_OPF 0x033
37
38/* 000110101 - 8-by-16-bit lower alpha partitioned product */
39#define FMUL8x16AL_OPF 0x035
40
41/* 000110110 - upper 8-by-16-bit partitioned product */
42#define FMUL8SUx16_OPF 0x036
43
44/* 000110111 - lower 8-by-16-bit partitioned product */
45#define FMUL8ULx16_OPF 0x037
46
47/* 000111000 - upper 8-by-16-bit partitioned product */
48#define FMULD8SUx16_OPF 0x038
49
50/* 000111001 - lower unsigned 8-by-16-bit partitioned product */
51#define FMULD8ULx16_OPF 0x039
52
53/* 000101000 - four 16-bit compare; set rd if src1 > src2 */
54#define FCMPGT16_OPF 0x028
55
56/* 000101100 - two 32-bit compare; set rd if src1 > src2 */
57#define FCMPGT32_OPF 0x02c
58
59/* 000100000 - four 16-bit compare; set rd if src1 <= src2 */
60#define FCMPLE16_OPF 0x020
61
62/* 000100100 - two 32-bit compare; set rd if src1 <= src2 */
63#define FCMPLE32_OPF 0x024
64
65/* 000100010 - four 16-bit compare; set rd if src1 != src2 */
66#define FCMPNE16_OPF 0x022
67
68/* 000100110 - two 32-bit compare; set rd if src1 != src2 */
69#define FCMPNE32_OPF 0x026
70
71/* 000101010 - four 16-bit compare; set rd if src1 == src2 */
72#define FCMPEQ16_OPF 0x02a
73
74/* 000101110 - two 32-bit compare; set rd if src1 == src2 */
75#define FCMPEQ32_OPF 0x02e
76
77/* 000000000 - Eight 8-bit edge boundary processing */
78#define EDGE8_OPF 0x000
79
80/* 000000001 - Eight 8-bit edge boundary processing, no CC */
81#define EDGE8N_OPF 0x001
82
83/* 000000010 - Eight 8-bit edge boundary processing, little-endian */
84#define EDGE8L_OPF 0x002
85
86/* 000000011 - Eight 8-bit edge boundary processing, little-endian, no CC */
87#define EDGE8LN_OPF 0x003
88
89/* 000000100 - Four 16-bit edge boundary processing */
90#define EDGE16_OPF 0x004
91
92/* 000000101 - Four 16-bit edge boundary processing, no CC */
93#define EDGE16N_OPF 0x005
94
95/* 000000110 - Four 16-bit edge boundary processing, little-endian */
96#define EDGE16L_OPF 0x006
97
98/* 000000111 - Four 16-bit edge boundary processing, little-endian, no CC */
99#define EDGE16LN_OPF 0x007
100
101/* 000001000 - Two 32-bit edge boundary processing */
102#define EDGE32_OPF 0x008
103
104/* 000001001 - Two 32-bit edge boundary processing, no CC */
105#define EDGE32N_OPF 0x009
106
107/* 000001010 - Two 32-bit edge boundary processing, little-endian */
108#define EDGE32L_OPF 0x00a
109
110/* 000001011 - Two 32-bit edge boundary processing, little-endian, no CC */
111#define EDGE32LN_OPF 0x00b
112
113/* 000111110 - distance between 8 8-bit components */
114#define PDIST_OPF 0x03e
115
116/* 000010000 - convert 8-bit 3-D address to blocked byte address */
117#define ARRAY8_OPF 0x010
118
119/* 000010010 - convert 16-bit 3-D address to blocked byte address */
120#define ARRAY16_OPF 0x012
121
122/* 000010100 - convert 32-bit 3-D address to blocked byte address */
123#define ARRAY32_OPF 0x014
124
125/* 000011001 - Set the GSR.MASK field in preparation for a BSHUFFLE */
126#define BMASK_OPF 0x019
127
128/* 001001100 - Permute bytes as specified by GSR.MASK */
129#define BSHUFFLE_OPF 0x04c
130
131#define VIS_OPF_SHIFT 5
132#define VIS_OPF_MASK (0x1ff << VIS_OPF_SHIFT)
133
134#define RS1(INSN) (((INSN) >> 14) & 0x1f)
135#define RS2(INSN) (((INSN) >> 0) & 0x1f)
136#define RD(INSN) (((INSN) >> 25) & 0x1f)
137
138static inline void maybe_flush_windows(unsigned int rs1, unsigned int rs2,
139 unsigned int rd, int from_kernel)
140{
141 if (rs2 >= 16 || rs1 >= 16 || rd >= 16) {
142 if (from_kernel != 0)
143 __asm__ __volatile__("flushw");
144 else
145 flushw_user();
146 }
147}
148
149static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs)
150{
151 unsigned long value;
152
153 if (reg < 16)
154 return (!reg ? 0 : regs->u_regs[reg]);
155 if (regs->tstate & TSTATE_PRIV) {
156 struct reg_window *win;
157 win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS);
158 value = win->locals[reg - 16];
159 } else if (test_thread_flag(TIF_32BIT)) {
160 struct reg_window32 __user *win32;
161 win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
162 get_user(value, &win32->locals[reg - 16]);
163 } else {
164 struct reg_window __user *win;
165 win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS);
166 get_user(value, &win->locals[reg - 16]);
167 }
168 return value;
169}
170
171static inline unsigned long __user *__fetch_reg_addr_user(unsigned int reg,
172 struct pt_regs *regs)
173{
174 BUG_ON(reg < 16);
175 BUG_ON(regs->tstate & TSTATE_PRIV);
176
177 if (test_thread_flag(TIF_32BIT)) {
178 struct reg_window32 __user *win32;
179 win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
180 return (unsigned long __user *)&win32->locals[reg - 16];
181 } else {
182 struct reg_window __user *win;
183 win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS);
184 return &win->locals[reg - 16];
185 }
186}
187
188static inline unsigned long *__fetch_reg_addr_kern(unsigned int reg,
189 struct pt_regs *regs)
190{
191 BUG_ON(reg >= 16);
192 BUG_ON(regs->tstate & TSTATE_PRIV);
193
194 return &regs->u_regs[reg];
195}
196
197static void store_reg(struct pt_regs *regs, unsigned long val, unsigned long rd)
198{
199 if (rd < 16) {
200 unsigned long *rd_kern = __fetch_reg_addr_kern(rd, regs);
201
202 *rd_kern = val;
203 } else {
204 unsigned long __user *rd_user = __fetch_reg_addr_user(rd, regs);
205
206 if (test_thread_flag(TIF_32BIT))
207 __put_user((u32)val, (u32 __user *)rd_user);
208 else
209 __put_user(val, rd_user);
210 }
211}
212
213static inline unsigned long fpd_regval(struct fpustate *f,
214 unsigned int insn_regnum)
215{
216 insn_regnum = (((insn_regnum & 1) << 5) |
217 (insn_regnum & 0x1e));
218
219 return *(unsigned long *) &f->regs[insn_regnum];
220}
221
222static inline unsigned long *fpd_regaddr(struct fpustate *f,
223 unsigned int insn_regnum)
224{
225 insn_regnum = (((insn_regnum & 1) << 5) |
226 (insn_regnum & 0x1e));
227
228 return (unsigned long *) &f->regs[insn_regnum];
229}
230
231static inline unsigned int fps_regval(struct fpustate *f,
232 unsigned int insn_regnum)
233{
234 return f->regs[insn_regnum];
235}
236
237static inline unsigned int *fps_regaddr(struct fpustate *f,
238 unsigned int insn_regnum)
239{
240 return &f->regs[insn_regnum];
241}
242
243struct edge_tab {
244 u16 left, right;
245};
246static struct edge_tab edge8_tab[8] = {
247 { 0xff, 0x80 },
248 { 0x7f, 0xc0 },
249 { 0x3f, 0xe0 },
250 { 0x1f, 0xf0 },
251 { 0x0f, 0xf8 },
252 { 0x07, 0xfc },
253 { 0x03, 0xfe },
254 { 0x01, 0xff },
255};
256static struct edge_tab edge8_tab_l[8] = {
257 { 0xff, 0x01 },
258 { 0xfe, 0x03 },
259 { 0xfc, 0x07 },
260 { 0xf8, 0x0f },
261 { 0xf0, 0x1f },
262 { 0xe0, 0x3f },
263 { 0xc0, 0x7f },
264 { 0x80, 0xff },
265};
266static struct edge_tab edge16_tab[4] = {
267 { 0xf, 0x8 },
268 { 0x7, 0xc },
269 { 0x3, 0xe },
270 { 0x1, 0xf },
271};
272static struct edge_tab edge16_tab_l[4] = {
273 { 0xf, 0x1 },
274 { 0xe, 0x3 },
275 { 0xc, 0x7 },
276 { 0x8, 0xf },
277};
278static struct edge_tab edge32_tab[2] = {
279 { 0x3, 0x2 },
280 { 0x1, 0x3 },
281};
282static struct edge_tab edge32_tab_l[2] = {
283 { 0x3, 0x1 },
284 { 0x2, 0x3 },
285};
286
287static void edge(struct pt_regs *regs, unsigned int insn, unsigned int opf)
288{
289 unsigned long orig_rs1, rs1, orig_rs2, rs2, rd_val;
290 u16 left, right;
291
292 maybe_flush_windows(RS1(insn), RS2(insn), RD(insn), 0);
293 orig_rs1 = rs1 = fetch_reg(RS1(insn), regs);
294 orig_rs2 = rs2 = fetch_reg(RS2(insn), regs);
295
296 if (test_thread_flag(TIF_32BIT)) {
297 rs1 = rs1 & 0xffffffff;
298 rs2 = rs2 & 0xffffffff;
299 }
300 switch (opf) {
301 default:
302 case EDGE8_OPF:
303 case EDGE8N_OPF:
304 left = edge8_tab[rs1 & 0x7].left;
305 right = edge8_tab[rs2 & 0x7].right;
306 break;
307 case EDGE8L_OPF:
308 case EDGE8LN_OPF:
309 left = edge8_tab_l[rs1 & 0x7].left;
310 right = edge8_tab_l[rs2 & 0x7].right;
311 break;
312
313 case EDGE16_OPF:
314 case EDGE16N_OPF:
315 left = edge16_tab[(rs1 >> 1) & 0x3].left;
316 right = edge16_tab[(rs2 >> 1) & 0x3].right;
317 break;
318
319 case EDGE16L_OPF:
320 case EDGE16LN_OPF:
321 left = edge16_tab_l[(rs1 >> 1) & 0x3].left;
322 right = edge16_tab_l[(rs2 >> 1) & 0x3].right;
323 break;
324
325 case EDGE32_OPF:
326 case EDGE32N_OPF:
327 left = edge32_tab[(rs1 >> 2) & 0x1].left;
328 right = edge32_tab[(rs2 >> 2) & 0x1].right;
329 break;
330
331 case EDGE32L_OPF:
332 case EDGE32LN_OPF:
333 left = edge32_tab_l[(rs1 >> 2) & 0x1].left;
334 right = edge32_tab_l[(rs2 >> 2) & 0x1].right;
335 break;
336 };
337
338 if ((rs1 & ~0x7UL) == (rs2 & ~0x7UL))
339 rd_val = right & left;
340 else
341 rd_val = left;
342
343 store_reg(regs, rd_val, RD(insn));
344
345 switch (opf) {
346 case EDGE8_OPF:
347 case EDGE8L_OPF:
348 case EDGE16_OPF:
349 case EDGE16L_OPF:
350 case EDGE32_OPF:
351 case EDGE32L_OPF: {
352 unsigned long ccr, tstate;
353
354 __asm__ __volatile__("subcc %1, %2, %%g0\n\t"
355 "rd %%ccr, %0"
356 : "=r" (ccr)
357 : "r" (orig_rs1), "r" (orig_rs2)
358 : "cc");
359 tstate = regs->tstate & ~(TSTATE_XCC | TSTATE_ICC);
360 regs->tstate = tstate | (ccr << 32UL);
361 }
362 };
363}
364
365static void array(struct pt_regs *regs, unsigned int insn, unsigned int opf)
366{
367 unsigned long rs1, rs2, rd_val;
368 unsigned int bits, bits_mask;
369
370 maybe_flush_windows(RS1(insn), RS2(insn), RD(insn), 0);
371 rs1 = fetch_reg(RS1(insn), regs);
372 rs2 = fetch_reg(RS2(insn), regs);
373
374 bits = (rs2 > 5 ? 5 : rs2);
375 bits_mask = (1UL << bits) - 1UL;
376
377 rd_val = ((((rs1 >> 11) & 0x3) << 0) |
378 (((rs1 >> 33) & 0x3) << 2) |
379 (((rs1 >> 55) & 0x1) << 4) |
380 (((rs1 >> 13) & 0xf) << 5) |
381 (((rs1 >> 35) & 0xf) << 9) |
382 (((rs1 >> 56) & 0xf) << 13) |
383 (((rs1 >> 17) & bits_mask) << 17) |
384 (((rs1 >> 39) & bits_mask) << (17 + bits)) |
385 (((rs1 >> 60) & 0xf) << (17 + (2*bits))));
386
387 switch (opf) {
388 case ARRAY16_OPF:
389 rd_val <<= 1;
390 break;
391
392 case ARRAY32_OPF:
393 rd_val <<= 2;
394 };
395
396 store_reg(regs, rd_val, RD(insn));
397}
398
399static void bmask(struct pt_regs *regs, unsigned int insn)
400{
401 unsigned long rs1, rs2, rd_val, gsr;
402
403 maybe_flush_windows(RS1(insn), RS2(insn), RD(insn), 0);
404 rs1 = fetch_reg(RS1(insn), regs);
405 rs2 = fetch_reg(RS2(insn), regs);
406 rd_val = rs1 + rs2;
407
408 store_reg(regs, rd_val, RD(insn));
409
410 gsr = current_thread_info()->gsr[0] & 0xffffffff;
411 gsr |= rd_val << 32UL;
412 current_thread_info()->gsr[0] = gsr;
413}
414
415static void bshuffle(struct pt_regs *regs, unsigned int insn)
416{
417 struct fpustate *f = FPUSTATE;
418 unsigned long rs1, rs2, rd_val;
419 unsigned long bmask, i;
420
421 bmask = current_thread_info()->gsr[0] >> 32UL;
422
423 rs1 = fpd_regval(f, RS1(insn));
424 rs2 = fpd_regval(f, RS2(insn));
425
426 rd_val = 0UL;
427 for (i = 0; i < 8; i++) {
428 unsigned long which = (bmask >> (i * 4)) & 0xf;
429 unsigned long byte;
430
431 if (which < 8)
432 byte = (rs1 >> (which * 8)) & 0xff;
433 else
434 byte = (rs2 >> ((which-8)*8)) & 0xff;
435 rd_val |= (byte << (i * 8));
436 }
437
438 *fpd_regaddr(f, RD(insn)) = rd_val;
439}
440
441static void pdist(struct pt_regs *regs, unsigned int insn)
442{
443 struct fpustate *f = FPUSTATE;
444 unsigned long rs1, rs2, *rd, rd_val;
445 unsigned long i;
446
447 rs1 = fpd_regval(f, RS1(insn));
448 rs2 = fpd_regval(f, RS2(insn));
449 rd = fpd_regaddr(f, RD(insn));
450
451 rd_val = *rd;
452
453 for (i = 0; i < 8; i++) {
454 s16 s1, s2;
455
456 s1 = (rs1 >> (56 - (i * 8))) & 0xff;
457 s2 = (rs2 >> (56 - (i * 8))) & 0xff;
458
459 /* Absolute value of difference. */
460 s1 -= s2;
461 if (s1 < 0)
462 s1 = ~s1 + 1;
463
464 rd_val += s1;
465 }
466
467 *rd = rd_val;
468}
469
470static void pformat(struct pt_regs *regs, unsigned int insn, unsigned int opf)
471{
472 struct fpustate *f = FPUSTATE;
473 unsigned long rs1, rs2, gsr, scale, rd_val;
474
475 gsr = current_thread_info()->gsr[0];
476 scale = (gsr >> 3) & (opf == FPACK16_OPF ? 0xf : 0x1f);
477 switch (opf) {
478 case FPACK16_OPF: {
479 unsigned long byte;
480
481 rs2 = fpd_regval(f, RS2(insn));
482 rd_val = 0;
483 for (byte = 0; byte < 4; byte++) {
484 unsigned int val;
485 s16 src = (rs2 >> (byte * 16UL)) & 0xffffUL;
486 int scaled = src << scale;
487 int from_fixed = scaled >> 7;
488
489 val = ((from_fixed < 0) ?
490 0 :
491 (from_fixed > 255) ?
492 255 : from_fixed);
493
494 rd_val |= (val << (8 * byte));
495 }
496 *fps_regaddr(f, RD(insn)) = rd_val;
497 break;
498 }
499
500 case FPACK32_OPF: {
501 unsigned long word;
502
503 rs1 = fpd_regval(f, RS1(insn));
504 rs2 = fpd_regval(f, RS2(insn));
505 rd_val = (rs1 << 8) & ~(0x000000ff000000ffUL);
506 for (word = 0; word < 2; word++) {
507 unsigned long val;
508 s32 src = (rs2 >> (word * 32UL));
509 s64 scaled = src << scale;
510 s64 from_fixed = scaled >> 23;
511
512 val = ((from_fixed < 0) ?
513 0 :
514 (from_fixed > 255) ?
515 255 : from_fixed);
516
517 rd_val |= (val << (32 * word));
518 }
519 *fpd_regaddr(f, RD(insn)) = rd_val;
520 break;
521 }
522
523 case FPACKFIX_OPF: {
524 unsigned long word;
525
526 rs2 = fpd_regval(f, RS2(insn));
527
528 rd_val = 0;
529 for (word = 0; word < 2; word++) {
530 long val;
531 s32 src = (rs2 >> (word * 32UL));
532 s64 scaled = src << scale;
533 s64 from_fixed = scaled >> 16;
534
535 val = ((from_fixed < -32768) ?
536 -32768 :
537 (from_fixed > 32767) ?
538 32767 : from_fixed);
539
540 rd_val |= ((val & 0xffff) << (word * 16));
541 }
542 *fps_regaddr(f, RD(insn)) = rd_val;
543 break;
544 }
545
546 case FEXPAND_OPF: {
547 unsigned long byte;
548
549 rs2 = fps_regval(f, RS2(insn));
550
551 rd_val = 0;
552 for (byte = 0; byte < 4; byte++) {
553 unsigned long val;
554 u8 src = (rs2 >> (byte * 8)) & 0xff;
555
556 val = src << 4;
557
558 rd_val |= (val << (byte * 16));
559 }
560 *fpd_regaddr(f, RD(insn)) = rd_val;
561 break;
562 }
563
564 case FPMERGE_OPF: {
565 rs1 = fps_regval(f, RS1(insn));
566 rs2 = fps_regval(f, RS2(insn));
567
568 rd_val = (((rs2 & 0x000000ff) << 0) |
569 ((rs1 & 0x000000ff) << 8) |
570 ((rs2 & 0x0000ff00) << 8) |
571 ((rs1 & 0x0000ff00) << 16) |
572 ((rs2 & 0x00ff0000) << 16) |
573 ((rs1 & 0x00ff0000) << 24) |
574 ((rs2 & 0xff000000) << 24) |
575 ((rs1 & 0xff000000) << 32));
576 *fpd_regaddr(f, RD(insn)) = rd_val;
577 break;
578 }
579 };
580}
581
582static void pmul(struct pt_regs *regs, unsigned int insn, unsigned int opf)
583{
584 struct fpustate *f = FPUSTATE;
585 unsigned long rs1, rs2, rd_val;
586
587 switch (opf) {
588 case FMUL8x16_OPF: {
589 unsigned long byte;
590
591 rs1 = fps_regval(f, RS1(insn));
592 rs2 = fpd_regval(f, RS2(insn));
593
594 rd_val = 0;
595 for (byte = 0; byte < 4; byte++) {
596 u16 src1 = (rs1 >> (byte * 8)) & 0x00ff;
597 s16 src2 = (rs2 >> (byte * 16)) & 0xffff;
598 u32 prod = src1 * src2;
599 u16 scaled = ((prod & 0x00ffff00) >> 8);
600
601 /* Round up. */
602 if (prod & 0x80)
603 scaled++;
604 rd_val |= ((scaled & 0xffffUL) << (byte * 16UL));
605 }
606
607 *fpd_regaddr(f, RD(insn)) = rd_val;
608 break;
609 }
610
611 case FMUL8x16AU_OPF:
612 case FMUL8x16AL_OPF: {
613 unsigned long byte;
614 s16 src2;
615
616 rs1 = fps_regval(f, RS1(insn));
617 rs2 = fps_regval(f, RS2(insn));
618
619 rd_val = 0;
620 src2 = (rs2 >> (opf == FMUL8x16AU_OPF) ? 16 : 0);
621 for (byte = 0; byte < 4; byte++) {
622 u16 src1 = (rs1 >> (byte * 8)) & 0x00ff;
623 u32 prod = src1 * src2;
624 u16 scaled = ((prod & 0x00ffff00) >> 8);
625
626 /* Round up. */
627 if (prod & 0x80)
628 scaled++;
629 rd_val |= ((scaled & 0xffffUL) << (byte * 16UL));
630 }
631
632 *fpd_regaddr(f, RD(insn)) = rd_val;
633 break;
634 }
635
636 case FMUL8SUx16_OPF:
637 case FMUL8ULx16_OPF: {
638 unsigned long byte, ushift;
639
640 rs1 = fpd_regval(f, RS1(insn));
641 rs2 = fpd_regval(f, RS2(insn));
642
643 rd_val = 0;
644 ushift = (opf == FMUL8SUx16_OPF) ? 8 : 0;
645 for (byte = 0; byte < 4; byte++) {
646 u16 src1;
647 s16 src2;
648 u32 prod;
649 u16 scaled;
650
651 src1 = ((rs1 >> ((16 * byte) + ushift)) & 0x00ff);
652 src2 = ((rs2 >> (16 * byte)) & 0xffff);
653 prod = src1 * src2;
654 scaled = ((prod & 0x00ffff00) >> 8);
655
656 /* Round up. */
657 if (prod & 0x80)
658 scaled++;
659 rd_val |= ((scaled & 0xffffUL) << (byte * 16UL));
660 }
661
662 *fpd_regaddr(f, RD(insn)) = rd_val;
663 break;
664 }
665
666 case FMULD8SUx16_OPF:
667 case FMULD8ULx16_OPF: {
668 unsigned long byte, ushift;
669
670 rs1 = fps_regval(f, RS1(insn));
671 rs2 = fps_regval(f, RS2(insn));
672
673 rd_val = 0;
674 ushift = (opf == FMULD8SUx16_OPF) ? 8 : 0;
675 for (byte = 0; byte < 2; byte++) {
676 u16 src1;
677 s16 src2;
678 u32 prod;
679 u16 scaled;
680
681 src1 = ((rs1 >> ((16 * byte) + ushift)) & 0x00ff);
682 src2 = ((rs2 >> (16 * byte)) & 0xffff);
683 prod = src1 * src2;
684 scaled = ((prod & 0x00ffff00) >> 8);
685
686 /* Round up. */
687 if (prod & 0x80)
688 scaled++;
689 rd_val |= ((scaled & 0xffffUL) <<
690 ((byte * 32UL) + 7UL));
691 }
692 *fpd_regaddr(f, RD(insn)) = rd_val;
693 break;
694 }
695 };
696}
697
698static void pcmp(struct pt_regs *regs, unsigned int insn, unsigned int opf)
699{
700 struct fpustate *f = FPUSTATE;
701 unsigned long rs1, rs2, rd_val, i;
702
703 rs1 = fpd_regval(f, RS1(insn));
704 rs2 = fpd_regval(f, RS2(insn));
705
706 rd_val = 0;
707
708 switch (opf) {
709 case FCMPGT16_OPF:
710 for (i = 0; i < 4; i++) {
711 s16 a = (rs1 >> (i * 16)) & 0xffff;
712 s16 b = (rs2 >> (i * 16)) & 0xffff;
713
714 if (a > b)
715 rd_val |= 1 << i;
716 }
717 break;
718
719 case FCMPGT32_OPF:
720 for (i = 0; i < 2; i++) {
721 s32 a = (rs1 >> (i * 32)) & 0xffff;
722 s32 b = (rs2 >> (i * 32)) & 0xffff;
723
724 if (a > b)
725 rd_val |= 1 << i;
726 }
727 break;
728
729 case FCMPLE16_OPF:
730 for (i = 0; i < 4; i++) {
731 s16 a = (rs1 >> (i * 16)) & 0xffff;
732 s16 b = (rs2 >> (i * 16)) & 0xffff;
733
734 if (a <= b)
735 rd_val |= 1 << i;
736 }
737 break;
738
739 case FCMPLE32_OPF:
740 for (i = 0; i < 2; i++) {
741 s32 a = (rs1 >> (i * 32)) & 0xffff;
742 s32 b = (rs2 >> (i * 32)) & 0xffff;
743
744 if (a <= b)
745 rd_val |= 1 << i;
746 }
747 break;
748
749 case FCMPNE16_OPF:
750 for (i = 0; i < 4; i++) {
751 s16 a = (rs1 >> (i * 16)) & 0xffff;
752 s16 b = (rs2 >> (i * 16)) & 0xffff;
753
754 if (a != b)
755 rd_val |= 1 << i;
756 }
757 break;
758
759 case FCMPNE32_OPF:
760 for (i = 0; i < 2; i++) {
761 s32 a = (rs1 >> (i * 32)) & 0xffff;
762 s32 b = (rs2 >> (i * 32)) & 0xffff;
763
764 if (a != b)
765 rd_val |= 1 << i;
766 }
767 break;
768
769 case FCMPEQ16_OPF:
770 for (i = 0; i < 4; i++) {
771 s16 a = (rs1 >> (i * 16)) & 0xffff;
772 s16 b = (rs2 >> (i * 16)) & 0xffff;
773
774 if (a == b)
775 rd_val |= 1 << i;
776 }
777 break;
778
779 case FCMPEQ32_OPF:
780 for (i = 0; i < 2; i++) {
781 s32 a = (rs1 >> (i * 32)) & 0xffff;
782 s32 b = (rs2 >> (i * 32)) & 0xffff;
783
784 if (a == b)
785 rd_val |= 1 << i;
786 }
787 break;
788 };
789
790 maybe_flush_windows(0, 0, RD(insn), 0);
791 store_reg(regs, rd_val, RD(insn));
792}
793
794/* Emulate the VIS instructions which are not implemented in
795 * hardware on Niagara.
796 */
797int vis_emul(struct pt_regs *regs, unsigned int insn)
798{
799 unsigned long pc = regs->tpc;
800 unsigned int opf;
801
802 BUG_ON(regs->tstate & TSTATE_PRIV);
803
804 if (test_thread_flag(TIF_32BIT))
805 pc = (u32)pc;
806
807 if (get_user(insn, (u32 __user *) pc))
808 return -EFAULT;
809
810 save_and_clear_fpu();
811
812 opf = (insn & VIS_OPF_MASK) >> VIS_OPF_SHIFT;
813 switch (opf) {
814 default:
815 return -EINVAL;
816
817 /* Pixel Formatting Instructions. */
818 case FPACK16_OPF:
819 case FPACK32_OPF:
820 case FPACKFIX_OPF:
821 case FEXPAND_OPF:
822 case FPMERGE_OPF:
823 pformat(regs, insn, opf);
824 break;
825
826 /* Partitioned Multiply Instructions */
827 case FMUL8x16_OPF:
828 case FMUL8x16AU_OPF:
829 case FMUL8x16AL_OPF:
830 case FMUL8SUx16_OPF:
831 case FMUL8ULx16_OPF:
832 case FMULD8SUx16_OPF:
833 case FMULD8ULx16_OPF:
834 pmul(regs, insn, opf);
835 break;
836
837 /* Pixel Compare Instructions */
838 case FCMPGT16_OPF:
839 case FCMPGT32_OPF:
840 case FCMPLE16_OPF:
841 case FCMPLE32_OPF:
842 case FCMPNE16_OPF:
843 case FCMPNE32_OPF:
844 case FCMPEQ16_OPF:
845 case FCMPEQ32_OPF:
846 pcmp(regs, insn, opf);
847 break;
848
849 /* Edge Handling Instructions */
850 case EDGE8_OPF:
851 case EDGE8N_OPF:
852 case EDGE8L_OPF:
853 case EDGE8LN_OPF:
854 case EDGE16_OPF:
855 case EDGE16N_OPF:
856 case EDGE16L_OPF:
857 case EDGE16LN_OPF:
858 case EDGE32_OPF:
859 case EDGE32N_OPF:
860 case EDGE32L_OPF:
861 case EDGE32LN_OPF:
862 edge(regs, insn, opf);
863 break;
864
865 /* Pixel Component Distance */
866 case PDIST_OPF:
867 pdist(regs, insn);
868 break;
869
870 /* Three-Dimensional Array Addressing Instructions */
871 case ARRAY8_OPF:
872 case ARRAY16_OPF:
873 case ARRAY32_OPF:
874 array(regs, insn, opf);
875 break;
876
877 /* Byte Mask and Shuffle Instructions */
878 case BMASK_OPF:
879 bmask(regs, insn);
880 break;
881
882 case BSHUFFLE_OPF:
883 bshuffle(regs, insn);
884 break;
885 };
886
887 regs->tpc = regs->tnpc;
888 regs->tnpc += 4;
889 return 0;
890}
diff --git a/arch/sparc/kernel/winfixup.S b/arch/sparc/kernel/winfixup.S
new file mode 100644
index 000000000000..a6b0863c27df
--- /dev/null
+++ b/arch/sparc/kernel/winfixup.S
@@ -0,0 +1,156 @@
1/* winfixup.S: Handle cases where user stack pointer is found to be bogus.
2 *
3 * Copyright (C) 1997, 2006 David S. Miller (davem@davemloft.net)
4 */
5
6#include <asm/asi.h>
7#include <asm/head.h>
8#include <asm/page.h>
9#include <asm/ptrace.h>
10#include <asm/processor.h>
11#include <asm/spitfire.h>
12#include <asm/thread_info.h>
13
14 .text
15
16 /* It used to be the case that these register window fault
17 * handlers could run via the save and restore instructions
18 * done by the trap entry and exit code. They now do the
19 * window spill/fill by hand, so that case no longer can occur.
20 */
21
22 .align 32
23fill_fixup:
24 TRAP_LOAD_THREAD_REG(%g6, %g1)
25 rdpr %tstate, %g1
26 and %g1, TSTATE_CWP, %g1
27 or %g4, FAULT_CODE_WINFIXUP, %g4
28 stb %g4, [%g6 + TI_FAULT_CODE]
29 stx %g5, [%g6 + TI_FAULT_ADDR]
30 wrpr %g1, %cwp
31 ba,pt %xcc, etrap
32 rd %pc, %g7
33 call do_sparc64_fault
34 add %sp, PTREGS_OFF, %o0
35 ba,pt %xcc, rtrap
36 nop
37
38 /* Be very careful about usage of the trap globals here.
39 * You cannot touch %g5 as that has the fault information.
40 */
41spill_fixup:
42spill_fixup_mna:
43spill_fixup_dax:
44 TRAP_LOAD_THREAD_REG(%g6, %g1)
45 ldx [%g6 + TI_FLAGS], %g1
46 andcc %g1, _TIF_32BIT, %g0
47 ldub [%g6 + TI_WSAVED], %g1
48 sll %g1, 3, %g3
49 add %g6, %g3, %g3
50 stx %sp, [%g3 + TI_RWIN_SPTRS]
51 sll %g1, 7, %g3
52 bne,pt %xcc, 1f
53 add %g6, %g3, %g3
54 stx %l0, [%g3 + TI_REG_WINDOW + 0x00]
55 stx %l1, [%g3 + TI_REG_WINDOW + 0x08]
56 stx %l2, [%g3 + TI_REG_WINDOW + 0x10]
57 stx %l3, [%g3 + TI_REG_WINDOW + 0x18]
58 stx %l4, [%g3 + TI_REG_WINDOW + 0x20]
59 stx %l5, [%g3 + TI_REG_WINDOW + 0x28]
60 stx %l6, [%g3 + TI_REG_WINDOW + 0x30]
61 stx %l7, [%g3 + TI_REG_WINDOW + 0x38]
62 stx %i0, [%g3 + TI_REG_WINDOW + 0x40]
63 stx %i1, [%g3 + TI_REG_WINDOW + 0x48]
64 stx %i2, [%g3 + TI_REG_WINDOW + 0x50]
65 stx %i3, [%g3 + TI_REG_WINDOW + 0x58]
66 stx %i4, [%g3 + TI_REG_WINDOW + 0x60]
67 stx %i5, [%g3 + TI_REG_WINDOW + 0x68]
68 stx %i6, [%g3 + TI_REG_WINDOW + 0x70]
69 ba,pt %xcc, 2f
70 stx %i7, [%g3 + TI_REG_WINDOW + 0x78]
711: stw %l0, [%g3 + TI_REG_WINDOW + 0x00]
72 stw %l1, [%g3 + TI_REG_WINDOW + 0x04]
73 stw %l2, [%g3 + TI_REG_WINDOW + 0x08]
74 stw %l3, [%g3 + TI_REG_WINDOW + 0x0c]
75 stw %l4, [%g3 + TI_REG_WINDOW + 0x10]
76 stw %l5, [%g3 + TI_REG_WINDOW + 0x14]
77 stw %l6, [%g3 + TI_REG_WINDOW + 0x18]
78 stw %l7, [%g3 + TI_REG_WINDOW + 0x1c]
79 stw %i0, [%g3 + TI_REG_WINDOW + 0x20]
80 stw %i1, [%g3 + TI_REG_WINDOW + 0x24]
81 stw %i2, [%g3 + TI_REG_WINDOW + 0x28]
82 stw %i3, [%g3 + TI_REG_WINDOW + 0x2c]
83 stw %i4, [%g3 + TI_REG_WINDOW + 0x30]
84 stw %i5, [%g3 + TI_REG_WINDOW + 0x34]
85 stw %i6, [%g3 + TI_REG_WINDOW + 0x38]
86 stw %i7, [%g3 + TI_REG_WINDOW + 0x3c]
872: add %g1, 1, %g1
88 stb %g1, [%g6 + TI_WSAVED]
89 rdpr %tstate, %g1
90 andcc %g1, TSTATE_PRIV, %g0
91 saved
92 be,pn %xcc, 1f
93 and %g1, TSTATE_CWP, %g1
94 retry
951: mov FAULT_CODE_WRITE | FAULT_CODE_DTLB | FAULT_CODE_WINFIXUP, %g4
96 stb %g4, [%g6 + TI_FAULT_CODE]
97 stx %g5, [%g6 + TI_FAULT_ADDR]
98 wrpr %g1, %cwp
99 ba,pt %xcc, etrap
100 rd %pc, %g7
101 call do_sparc64_fault
102 add %sp, PTREGS_OFF, %o0
103 ba,a,pt %xcc, rtrap
104
105winfix_mna:
106 andn %g3, 0x7f, %g3
107 add %g3, 0x78, %g3
108 wrpr %g3, %tnpc
109 done
110
111fill_fixup_mna:
112 rdpr %tstate, %g1
113 and %g1, TSTATE_CWP, %g1
114 wrpr %g1, %cwp
115 ba,pt %xcc, etrap
116 rd %pc, %g7
117 sethi %hi(tlb_type), %g1
118 lduw [%g1 + %lo(tlb_type)], %g1
119 cmp %g1, 3
120 bne,pt %icc, 1f
121 add %sp, PTREGS_OFF, %o0
122 mov %l4, %o2
123 call sun4v_do_mna
124 mov %l5, %o1
125 ba,a,pt %xcc, rtrap
1261: mov %l4, %o1
127 mov %l5, %o2
128 call mem_address_unaligned
129 nop
130 ba,a,pt %xcc, rtrap
131
132winfix_dax:
133 andn %g3, 0x7f, %g3
134 add %g3, 0x74, %g3
135 wrpr %g3, %tnpc
136 done
137
138fill_fixup_dax:
139 rdpr %tstate, %g1
140 and %g1, TSTATE_CWP, %g1
141 wrpr %g1, %cwp
142 ba,pt %xcc, etrap
143 rd %pc, %g7
144 sethi %hi(tlb_type), %g1
145 mov %l4, %o1
146 lduw [%g1 + %lo(tlb_type)], %g1
147 mov %l5, %o2
148 cmp %g1, 3
149 bne,pt %icc, 1f
150 add %sp, PTREGS_OFF, %o0
151 call sun4v_data_access_exception
152 nop
153 ba,a,pt %xcc, rtrap
1541: call spitfire_data_access_exception
155 nop
156 ba,a,pt %xcc, rtrap
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-30 18:30:37 -0500