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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-30 16:46:56 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-30 16:46:56 -0400
commite399835c349b7d8339775a004a86a492a444e230 (patch)
tree6e07f8d53e58a6442bf850097179d0202db4766c
parent9abf47f11b38f5ecf411b9a44437cad5016631ad (diff)
parentda3a7a2b9f9776f2d44ed9a4b40eabeb17c6e886 (diff)
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: MIPS: Avoid spurious make includecheck message MIPS: VPE: Get rid of BKL. MIPS: VPE: Fix build after the credential changes a while ago. MIPS: Excite: Get rid of BKL. MIPS: Sibyte: Get rid of BKL. MIPS: BCM63xx: Add PCMCIA & Cardbus support. MIPS: MSP71xx: request_irq() failure ignored in msp_pcibios_config_access() MIPS: Decrease size of au1xxx_dbdma_pm_regs[][] MIPS: SMP: Inline arch_send_call_function_{single_ipi,ipi_mask} MIPS: SMP: Fix build. MIPS: MIPSxx SC: Avoid destructive invalidation on partial L2 cachelines. MIPS: Sibyte: Fix compilation error. MIPS: BCM1480: Re-apply patch lost due to bad resolution of merge conflict. MIPS: BCM63xx: Add serial driver for bcm63xx integrated UART. MIPS: Loongson2: Fix typo "enalbe" -> "enable" MIPS: SMTC: Remove duplicate structure field initialization MIPS: Remove duplicated #include MIPS: BCM63xx: Remove duplicated #include
Diffstat
-rw-r--r--arch/mips/alchemy/common/dbdma.c8
-rw-r--r--arch/mips/basler/excite/excite_iodev.c2
-rw-r--r--arch/mips/bcm63xx/Makefile2
-rw-r--r--arch/mips/bcm63xx/boards/board_bcm963xx.c8
-rw-r--r--arch/mips/bcm63xx/dev-pcmcia.c144
-rw-r--r--arch/mips/bcm63xx/dev-uart.c41
-rw-r--r--arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h13
-rw-r--r--arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h6
-rw-r--r--arch/mips/include/asm/smp.h15
-rw-r--r--arch/mips/include/asm/unaligned.h4
-rw-r--r--arch/mips/kernel/kspd.c33
-rw-r--r--arch/mips/kernel/rtlx.c15
-rw-r--r--arch/mips/kernel/smp.c14
-rw-r--r--arch/mips/kernel/smtc.c5
-rw-r--r--arch/mips/kernel/vpe.c77
-rw-r--r--arch/mips/mm/sc-mips.c5
-rw-r--r--arch/mips/oprofile/op_model_loongson2.c14
-rw-r--r--arch/mips/pci/ops-pmcmsp.c5
-rw-r--r--arch/mips/sgi-ip27/ip27-smp.c2
-rw-r--r--arch/mips/sibyte/bcm1480/irq.c4
-rw-r--r--arch/mips/sibyte/common/sb_tbprof.c33
-rw-r--r--arch/mips/sibyte/swarm/setup.c2
-rw-r--r--drivers/pcmcia/Kconfig4
-rw-r--r--drivers/pcmcia/Makefile1
-rw-r--r--drivers/pcmcia/bcm63xx_pcmcia.c536
-rw-r--r--drivers/pcmcia/bcm63xx_pcmcia.h60
-rw-r--r--drivers/serial/Kconfig19
-rw-r--r--drivers/serial/Makefile1
-rw-r--r--drivers/serial/bcm63xx_uart.c890
-rw-r--r--include/linux/serial_core.h3
30 files changed, 1852 insertions, 114 deletions
diff --git a/arch/mips/alchemy/common/dbdma.c b/arch/mips/alchemy/common/dbdma.c
index 3ab6d80d150d..19c1c82849ff 100644
--- a/arch/mips/alchemy/common/dbdma.c
+++ b/arch/mips/alchemy/common/dbdma.c
@@ -175,7 +175,7 @@ static dbdev_tab_t dbdev_tab[] = {
175#define DBDEV_TAB_SIZE ARRAY_SIZE(dbdev_tab) 175#define DBDEV_TAB_SIZE ARRAY_SIZE(dbdev_tab)
176 176
177#ifdef CONFIG_PM 177#ifdef CONFIG_PM
178static u32 au1xxx_dbdma_pm_regs[NUM_DBDMA_CHANS + 1][8]; 178static u32 au1xxx_dbdma_pm_regs[NUM_DBDMA_CHANS + 1][6];
179#endif 179#endif
180 180
181 181
@@ -993,14 +993,13 @@ void au1xxx_dbdma_suspend(void)
993 au1xxx_dbdma_pm_regs[0][3] = au_readl(addr + 0x0c); 993 au1xxx_dbdma_pm_regs[0][3] = au_readl(addr + 0x0c);
994 994
995 /* save channel configurations */ 995 /* save channel configurations */
996 for (i = 1, addr = DDMA_CHANNEL_BASE; i < NUM_DBDMA_CHANS; i++) { 996 for (i = 1, addr = DDMA_CHANNEL_BASE; i <= NUM_DBDMA_CHANS; i++) {
997 au1xxx_dbdma_pm_regs[i][0] = au_readl(addr + 0x00); 997 au1xxx_dbdma_pm_regs[i][0] = au_readl(addr + 0x00);
998 au1xxx_dbdma_pm_regs[i][1] = au_readl(addr + 0x04); 998 au1xxx_dbdma_pm_regs[i][1] = au_readl(addr + 0x04);
999 au1xxx_dbdma_pm_regs[i][2] = au_readl(addr + 0x08); 999 au1xxx_dbdma_pm_regs[i][2] = au_readl(addr + 0x08);
1000 au1xxx_dbdma_pm_regs[i][3] = au_readl(addr + 0x0c); 1000 au1xxx_dbdma_pm_regs[i][3] = au_readl(addr + 0x0c);
1001 au1xxx_dbdma_pm_regs[i][4] = au_readl(addr + 0x10); 1001 au1xxx_dbdma_pm_regs[i][4] = au_readl(addr + 0x10);
1002 au1xxx_dbdma_pm_regs[i][5] = au_readl(addr + 0x14); 1002 au1xxx_dbdma_pm_regs[i][5] = au_readl(addr + 0x14);
1003 au1xxx_dbdma_pm_regs[i][6] = au_readl(addr + 0x18);
1004 1003
1005 /* halt channel */ 1004 /* halt channel */
1006 au_writel(au1xxx_dbdma_pm_regs[i][0] & ~1, addr + 0x00); 1005 au_writel(au1xxx_dbdma_pm_regs[i][0] & ~1, addr + 0x00);
@@ -1027,14 +1026,13 @@ void au1xxx_dbdma_resume(void)
1027 au_writel(au1xxx_dbdma_pm_regs[0][3], addr + 0x0c); 1026 au_writel(au1xxx_dbdma_pm_regs[0][3], addr + 0x0c);
1028 1027
1029 /* restore channel configurations */ 1028 /* restore channel configurations */
1030 for (i = 1, addr = DDMA_CHANNEL_BASE; i < NUM_DBDMA_CHANS; i++) { 1029 for (i = 1, addr = DDMA_CHANNEL_BASE; i <= NUM_DBDMA_CHANS; i++) {
1031 au_writel(au1xxx_dbdma_pm_regs[i][0], addr + 0x00); 1030 au_writel(au1xxx_dbdma_pm_regs[i][0], addr + 0x00);
1032 au_writel(au1xxx_dbdma_pm_regs[i][1], addr + 0x04); 1031 au_writel(au1xxx_dbdma_pm_regs[i][1], addr + 0x04);
1033 au_writel(au1xxx_dbdma_pm_regs[i][2], addr + 0x08); 1032 au_writel(au1xxx_dbdma_pm_regs[i][2], addr + 0x08);
1034 au_writel(au1xxx_dbdma_pm_regs[i][3], addr + 0x0c); 1033 au_writel(au1xxx_dbdma_pm_regs[i][3], addr + 0x0c);
1035 au_writel(au1xxx_dbdma_pm_regs[i][4], addr + 0x10); 1034 au_writel(au1xxx_dbdma_pm_regs[i][4], addr + 0x10);
1036 au_writel(au1xxx_dbdma_pm_regs[i][5], addr + 0x14); 1035 au_writel(au1xxx_dbdma_pm_regs[i][5], addr + 0x14);
1037 au_writel(au1xxx_dbdma_pm_regs[i][6], addr + 0x18);
1038 au_sync(); 1036 au_sync();
1039 addr += 0x100; /* next channel base */ 1037 addr += 0x100; /* next channel base */
1040 } 1038 }
diff --git a/arch/mips/basler/excite/excite_iodev.c b/arch/mips/basler/excite/excite_iodev.c
index dfbfd7e2ac08..938b1d0b7652 100644
--- a/arch/mips/basler/excite/excite_iodev.c
+++ b/arch/mips/basler/excite/excite_iodev.c
@@ -112,10 +112,8 @@ static int iodev_open(struct inode *i, struct file *f)
112{ 112{
113 int ret; 113 int ret;
114 114
115 lock_kernel();
116 ret = request_irq(iodev_irq, iodev_irqhdl, IRQF_DISABLED, 115 ret = request_irq(iodev_irq, iodev_irqhdl, IRQF_DISABLED,
117 iodev_name, &miscdev); 116 iodev_name, &miscdev);
118 unlock_kernel();
119 117
120 return ret; 118 return ret;
121} 119}
diff --git a/arch/mips/bcm63xx/Makefile b/arch/mips/bcm63xx/Makefile
index aaa585cf26e3..c146d1ededed 100644
--- a/arch/mips/bcm63xx/Makefile
+++ b/arch/mips/bcm63xx/Makefile
@@ -1,5 +1,5 @@
1obj-y += clk.o cpu.o cs.o gpio.o irq.o prom.o setup.o timer.o \ 1obj-y += clk.o cpu.o cs.o gpio.o irq.o prom.o setup.o timer.o \
2 dev-dsp.o dev-enet.o 2 dev-dsp.o dev-enet.o dev-pcmcia.o dev-uart.o
3obj-$(CONFIG_EARLY_PRINTK) += early_printk.o 3obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
4 4
5obj-y += boards/ 5obj-y += boards/
diff --git a/arch/mips/bcm63xx/boards/board_bcm963xx.c b/arch/mips/bcm63xx/boards/board_bcm963xx.c
index fd77f548207a..78e155d21be6 100644
--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
@@ -20,10 +20,11 @@
20#include <bcm63xx_cpu.h> 20#include <bcm63xx_cpu.h>
21#include <bcm63xx_regs.h> 21#include <bcm63xx_regs.h>
22#include <bcm63xx_io.h> 22#include <bcm63xx_io.h>
23#include <bcm63xx_board.h>
24#include <bcm63xx_dev_pci.h> 23#include <bcm63xx_dev_pci.h>
25#include <bcm63xx_dev_enet.h> 24#include <bcm63xx_dev_enet.h>
26#include <bcm63xx_dev_dsp.h> 25#include <bcm63xx_dev_dsp.h>
26#include <bcm63xx_dev_pcmcia.h>
27#include <bcm63xx_dev_uart.h>
27#include <board_bcm963xx.h> 28#include <board_bcm963xx.h>
28 29
29#define PFX "board_bcm963xx: " 30#define PFX "board_bcm963xx: "
@@ -793,6 +794,11 @@ int __init board_register_devices(void)
793{ 794{
794 u32 val; 795 u32 val;
795 796
797 bcm63xx_uart_register();
798
799 if (board.has_pccard)
800 bcm63xx_pcmcia_register();
801
796 if (board.has_enet0 && 802 if (board.has_enet0 &&
797 !board_get_mac_address(board.enet0.mac_addr)) 803 !board_get_mac_address(board.enet0.mac_addr))
798 bcm63xx_enet_register(0, &board.enet0); 804 bcm63xx_enet_register(0, &board.enet0);
diff --git a/arch/mips/bcm63xx/dev-pcmcia.c b/arch/mips/bcm63xx/dev-pcmcia.c
new file mode 100644
index 000000000000..de4d917fd54d
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-pcmcia.c
@@ -0,0 +1,144 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
7 */
8
9#include <linux/init.h>
10#include <linux/kernel.h>
11#include <asm/bootinfo.h>
12#include <linux/platform_device.h>
13#include <bcm63xx_cs.h>
14#include <bcm63xx_cpu.h>
15#include <bcm63xx_dev_pcmcia.h>
16#include <bcm63xx_io.h>
17#include <bcm63xx_regs.h>
18
19static struct resource pcmcia_resources[] = {
20 /* pcmcia registers */
21 {
22 /* start & end filled at runtime */
23 .flags = IORESOURCE_MEM,
24 },
25
26 /* pcmcia memory zone resources */
27 {
28 .start = BCM_PCMCIA_COMMON_BASE_PA,
29 .end = BCM_PCMCIA_COMMON_END_PA,
30 .flags = IORESOURCE_MEM,
31 },
32 {
33 .start = BCM_PCMCIA_ATTR_BASE_PA,
34 .end = BCM_PCMCIA_ATTR_END_PA,
35 .flags = IORESOURCE_MEM,
36 },
37 {
38 .start = BCM_PCMCIA_IO_BASE_PA,
39 .end = BCM_PCMCIA_IO_END_PA,
40 .flags = IORESOURCE_MEM,
41 },
42
43 /* PCMCIA irq */
44 {
45 /* start filled at runtime */
46 .flags = IORESOURCE_IRQ,
47 },
48
49 /* declare PCMCIA IO resource also */
50 {
51 .start = BCM_PCMCIA_IO_BASE_PA,
52 .end = BCM_PCMCIA_IO_END_PA,
53 .flags = IORESOURCE_IO,
54 },
55};
56
57static struct bcm63xx_pcmcia_platform_data pd;
58
59static struct platform_device bcm63xx_pcmcia_device = {
60 .name = "bcm63xx_pcmcia",
61 .id = 0,
62 .num_resources = ARRAY_SIZE(pcmcia_resources),
63 .resource = pcmcia_resources,
64 .dev = {
65 .platform_data = &pd,
66 },
67};
68
69static int __init config_pcmcia_cs(unsigned int cs,
70 u32 base, unsigned int size)
71{
72 int ret;
73
74 ret = bcm63xx_set_cs_status(cs, 0);
75 if (!ret)
76 ret = bcm63xx_set_cs_base(cs, base, size);
77 if (!ret)
78 ret = bcm63xx_set_cs_status(cs, 1);
79 return ret;
80}
81
82static const __initdata struct {
83 unsigned int cs;
84 unsigned int base;
85 unsigned int size;
86} pcmcia_cs[3] = {
87 {
88 .cs = MPI_CS_PCMCIA_COMMON,
89 .base = BCM_PCMCIA_COMMON_BASE_PA,
90 .size = BCM_PCMCIA_COMMON_SIZE
91 },
92 {
93 .cs = MPI_CS_PCMCIA_ATTR,
94 .base = BCM_PCMCIA_ATTR_BASE_PA,
95 .size = BCM_PCMCIA_ATTR_SIZE
96 },
97 {
98 .cs = MPI_CS_PCMCIA_IO,
99 .base = BCM_PCMCIA_IO_BASE_PA,
100 .size = BCM_PCMCIA_IO_SIZE
101 },
102};
103
104int __init bcm63xx_pcmcia_register(void)
105{
106 int ret, i;
107
108 if (!BCMCPU_IS_6348() && !BCMCPU_IS_6358())
109 return 0;
110
111 /* use correct pcmcia ready gpio depending on processor */
112 switch (bcm63xx_get_cpu_id()) {
113 case BCM6348_CPU_ID:
114 pd.ready_gpio = 22;
115 break;
116
117 case BCM6358_CPU_ID:
118 pd.ready_gpio = 18;
119 break;
120
121 default:
122 return -ENODEV;
123 }
124
125 pcmcia_resources[0].start = bcm63xx_regset_address(RSET_PCMCIA);
126 pcmcia_resources[0].end = pcmcia_resources[0].start +
127 RSET_PCMCIA_SIZE - 1;
128 pcmcia_resources[4].start = bcm63xx_get_irq_number(IRQ_PCMCIA);
129
130 /* configure pcmcia chip selects */
131 for (i = 0; i < 3; i++) {
132 ret = config_pcmcia_cs(pcmcia_cs[i].cs,
133 pcmcia_cs[i].base,
134 pcmcia_cs[i].size);
135 if (ret)
136 goto out_err;
137 }
138
139 return platform_device_register(&bcm63xx_pcmcia_device);
140
141out_err:
142 printk(KERN_ERR "unable to set pcmcia chip select\n");
143 return ret;
144}
diff --git a/arch/mips/bcm63xx/dev-uart.c b/arch/mips/bcm63xx/dev-uart.c
new file mode 100644
index 000000000000..5f3d89c4a988
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-uart.c
@@ -0,0 +1,41 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
7 */
8
9#include <linux/init.h>
10#include <linux/kernel.h>
11#include <linux/platform_device.h>
12#include <bcm63xx_cpu.h>
13#include <bcm63xx_dev_uart.h>
14
15static struct resource uart_resources[] = {
16 {
17 .start = -1, /* filled at runtime */
18 .end = -1, /* filled at runtime */
19 .flags = IORESOURCE_MEM,
20 },
21 {
22 .start = -1, /* filled at runtime */
23 .flags = IORESOURCE_IRQ,
24 },
25};
26
27static struct platform_device bcm63xx_uart_device = {
28 .name = "bcm63xx_uart",
29 .id = 0,
30 .num_resources = ARRAY_SIZE(uart_resources),
31 .resource = uart_resources,
32};
33
34int __init bcm63xx_uart_register(void)
35{
36 uart_resources[0].start = bcm63xx_regset_address(RSET_UART0);
37 uart_resources[0].end = uart_resources[0].start;
38 uart_resources[0].end += RSET_UART_SIZE - 1;
39 uart_resources[1].start = bcm63xx_get_irq_number(IRQ_UART0);
40 return platform_device_register(&bcm63xx_uart_device);
41}
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h
new file mode 100644
index 000000000000..2beb3969ce3b
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h
@@ -0,0 +1,13 @@
1#ifndef BCM63XX_DEV_PCMCIA_H_
2#define BCM63XX_DEV_PCMCIA_H_
3
4/*
5 * PCMCIA driver platform data
6 */
7struct bcm63xx_pcmcia_platform_data {
8 unsigned int ready_gpio;
9};
10
11int bcm63xx_pcmcia_register(void);
12
13#endif /* BCM63XX_DEV_PCMCIA_H_ */
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h
new file mode 100644
index 000000000000..bf348f573bbc
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h
@@ -0,0 +1,6 @@
1#ifndef BCM63XX_DEV_UART_H_
2#define BCM63XX_DEV_UART_H_
3
4int bcm63xx_uart_register(void);
5
6#endif /* BCM63XX_DEV_UART_H_ */
diff --git a/arch/mips/include/asm/smp.h b/arch/mips/include/asm/smp.h
index e15f11a09311..af42385245d5 100644
--- a/arch/mips/include/asm/smp.h
+++ b/arch/mips/include/asm/smp.h
@@ -77,7 +77,18 @@ extern void play_dead(void);
77 77
78extern asmlinkage void smp_call_function_interrupt(void); 78extern asmlinkage void smp_call_function_interrupt(void);
79 79
80extern void arch_send_call_function_single_ipi(int cpu); 80static inline void arch_send_call_function_single_ipi(int cpu)
81extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); 81{
82 extern struct plat_smp_ops *mp_ops; /* private */
83
84 mp_ops->send_ipi_mask(&cpumask_of_cpu(cpu), SMP_CALL_FUNCTION);
85}
86
87static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
88{
89 extern struct plat_smp_ops *mp_ops; /* private */
90
91 mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION);
92}
82 93
83#endif /* __ASM_SMP_H */ 94#endif /* __ASM_SMP_H */
diff --git a/arch/mips/include/asm/unaligned.h b/arch/mips/include/asm/unaligned.h
index 792404948571..42f66c311473 100644
--- a/arch/mips/include/asm/unaligned.h
+++ b/arch/mips/include/asm/unaligned.h
@@ -12,17 +12,17 @@
12#if defined(__MIPSEB__) 12#if defined(__MIPSEB__)
13# include <linux/unaligned/be_struct.h> 13# include <linux/unaligned/be_struct.h>
14# include <linux/unaligned/le_byteshift.h> 14# include <linux/unaligned/le_byteshift.h>
15# include <linux/unaligned/generic.h>
16# define get_unaligned __get_unaligned_be 15# define get_unaligned __get_unaligned_be
17# define put_unaligned __put_unaligned_be 16# define put_unaligned __put_unaligned_be
18#elif defined(__MIPSEL__) 17#elif defined(__MIPSEL__)
19# include <linux/unaligned/le_struct.h> 18# include <linux/unaligned/le_struct.h>
20# include <linux/unaligned/be_byteshift.h> 19# include <linux/unaligned/be_byteshift.h>
21# include <linux/unaligned/generic.h>
22# define get_unaligned __get_unaligned_le 20# define get_unaligned __get_unaligned_le
23# define put_unaligned __put_unaligned_le 21# define put_unaligned __put_unaligned_le
24#else 22#else
25# error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???" 23# error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???"
26#endif 24#endif
27 25
26# include <linux/unaligned/generic.h>
27
28#endif /* _ASM_MIPS_UNALIGNED_H */ 28#endif /* _ASM_MIPS_UNALIGNED_H */
diff --git a/arch/mips/kernel/kspd.c b/arch/mips/kernel/kspd.c
index f2397f00db43..ad4e017ed2f3 100644
--- a/arch/mips/kernel/kspd.c
+++ b/arch/mips/kernel/kspd.c
@@ -172,13 +172,20 @@ static unsigned int translate_open_flags(int flags)
172} 172}
173 173
174 174
175static void sp_setfsuidgid( uid_t uid, gid_t gid) 175static int sp_setfsuidgid(uid_t uid, gid_t gid)
176{ 176{
177 current->cred->fsuid = uid; 177 struct cred *new;
178 current->cred->fsgid = gid;
179 178
180 key_fsuid_changed(current); 179 new = prepare_creds();
181 key_fsgid_changed(current); 180 if (!new)
181 return -ENOMEM;
182
183 new->fsuid = uid;
184 new->fsgid = gid;
185
186 commit_creds(new);
187
188 return 0;
182} 189}
183 190
184/* 191/*
@@ -196,7 +203,7 @@ void sp_work_handle_request(void)
196 mm_segment_t old_fs; 203 mm_segment_t old_fs;
197 struct timeval tv; 204 struct timeval tv;
198 struct timezone tz; 205 struct timezone tz;
199 int cmd; 206 int err, cmd;
200 207
201 char *vcwd; 208 char *vcwd;
202 int size; 209 int size;
@@ -225,8 +232,11 @@ void sp_work_handle_request(void)
225 /* Run the syscall at the privilege of the user who loaded the 232 /* Run the syscall at the privilege of the user who loaded the
226 SP program */ 233 SP program */
227 234
228 if (vpe_getuid(tclimit)) 235 if (vpe_getuid(tclimit)) {
229 sp_setfsuidgid(vpe_getuid(tclimit), vpe_getgid(tclimit)); 236 err = sp_setfsuidgid(vpe_getuid(tclimit), vpe_getgid(tclimit));
237 if (!err)
238 pr_err("Change of creds failed\n");
239 }
230 240
231 switch (sc.cmd) { 241 switch (sc.cmd) {
232 /* needs the flags argument translating from SDE kit to 242 /* needs the flags argument translating from SDE kit to
@@ -283,8 +293,11 @@ void sp_work_handle_request(void)
283 break; 293 break;
284 } /* switch */ 294 } /* switch */
285 295
286 if (vpe_getuid(tclimit)) 296 if (vpe_getuid(tclimit)) {
287 sp_setfsuidgid( 0, 0); 297 err = sp_setfsuidgid(0, 0);
298 if (!err)
299 pr_err("restoring old creds failed\n");
300 }
288 301
289 old_fs = get_fs(); 302 old_fs = get_fs();
290 set_fs(KERNEL_DS); 303 set_fs(KERNEL_DS);
diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c
index a10ebfdc28ae..364f066cb497 100644
--- a/arch/mips/kernel/rtlx.c
+++ b/arch/mips/kernel/rtlx.c
@@ -72,8 +72,9 @@ static void rtlx_dispatch(void)
72*/ 72*/
73static irqreturn_t rtlx_interrupt(int irq, void *dev_id) 73static irqreturn_t rtlx_interrupt(int irq, void *dev_id)
74{ 74{
75 unsigned int vpeflags;
76 unsigned long flags;
75 int i; 77 int i;
76 unsigned int flags, vpeflags;
77 78
78 /* Ought not to be strictly necessary for SMTC builds */ 79 /* Ought not to be strictly necessary for SMTC builds */
79 local_irq_save(flags); 80 local_irq_save(flags);
@@ -392,20 +393,12 @@ out:
392 393
393static int file_open(struct inode *inode, struct file *filp) 394static int file_open(struct inode *inode, struct file *filp)
394{ 395{
395 int minor = iminor(inode); 396 return rtlx_open(iminor(inode), (filp->f_flags & O_NONBLOCK) ? 0 : 1);
396 int err;
397
398 lock_kernel();
399 err = rtlx_open(minor, (filp->f_flags & O_NONBLOCK) ? 0 : 1);
400 unlock_kernel();
401 return err;
402} 397}
403 398
404static int file_release(struct inode *inode, struct file *filp) 399static int file_release(struct inode *inode, struct file *filp)
405{ 400{
406 int minor = iminor(inode); 401 return rtlx_release(iminor(inode));
407
408 return rtlx_release(minor);
409} 402}
410 403
411static unsigned int file_poll(struct file *file, poll_table * wait) 404static unsigned int file_poll(struct file *file, poll_table * wait)
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 4eb106c6a3ec..e72e6844d134 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -32,7 +32,6 @@
32#include <linux/cpumask.h> 32#include <linux/cpumask.h>
33#include <linux/cpu.h> 33#include <linux/cpu.h>
34#include <linux/err.h> 34#include <linux/err.h>
35#include <linux/smp.h>
36 35
37#include <asm/atomic.h> 36#include <asm/atomic.h>
38#include <asm/cpu.h> 37#include <asm/cpu.h>
@@ -128,19 +127,6 @@ asmlinkage __cpuinit void start_secondary(void)
128 cpu_idle(); 127 cpu_idle();
129} 128}
130 129
131void arch_send_call_function_ipi_mask(const struct cpumask *mask)
132{
133 mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION);
134}
135
136/*
137 * We reuse the same vector for the single IPI
138 */
139void arch_send_call_function_single_ipi(int cpu)
140{
141 mp_ops->send_ipi_mask(cpumask_of_cpu(cpu), SMP_CALL_FUNCTION);
142}
143
144/* 130/*
145 * Call into both interrupt handlers, as we share the IPI for them 131 * Call into both interrupt handlers, as we share the IPI for them
146 */ 132 */
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index 67153a0dc267..4d181df44a40 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -1098,9 +1098,8 @@ static void ipi_irq_dispatch(void)
1098 1098
1099static struct irqaction irq_ipi = { 1099static struct irqaction irq_ipi = {
1100 .handler = ipi_interrupt, 1100 .handler = ipi_interrupt,
1101 .flags = IRQF_DISABLED, 1101 .flags = IRQF_DISABLED | IRQF_PERCPU,
1102 .name = "SMTC_IPI", 1102 .name = "SMTC_IPI"
1103 .flags = IRQF_PERCPU
1104}; 1103};
1105 1104
1106static void setup_cross_vpe_interrupts(unsigned int nvpe) 1105static void setup_cross_vpe_interrupts(unsigned int nvpe)
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index eb6c4c5b7fbe..03092ab2a296 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -144,14 +144,15 @@ struct tc {
144}; 144};
145 145
146struct { 146struct {
147 /* Virtual processing elements */ 147 spinlock_t vpe_list_lock;
148 struct list_head vpe_list; 148 struct list_head vpe_list; /* Virtual processing elements */
149 149 spinlock_t tc_list_lock;
150 /* Thread contexts */ 150 struct list_head tc_list; /* Thread contexts */
151 struct list_head tc_list;
152} vpecontrol = { 151} vpecontrol = {
153 .vpe_list = LIST_HEAD_INIT(vpecontrol.vpe_list), 152 .vpe_list_lock = SPIN_LOCK_UNLOCKED,
154 .tc_list = LIST_HEAD_INIT(vpecontrol.tc_list) 153 .vpe_list = LIST_HEAD_INIT(vpecontrol.vpe_list),
154 .tc_list_lock = SPIN_LOCK_UNLOCKED,
155 .tc_list = LIST_HEAD_INIT(vpecontrol.tc_list)
155}; 156};
156 157
157static void release_progmem(void *ptr); 158static void release_progmem(void *ptr);
@@ -159,28 +160,38 @@ static void release_progmem(void *ptr);
159/* get the vpe associated with this minor */ 160/* get the vpe associated with this minor */
160static struct vpe *get_vpe(int minor) 161static struct vpe *get_vpe(int minor)
161{ 162{
162 struct vpe *v; 163 struct vpe *res, *v;
163 164
164 if (!cpu_has_mipsmt) 165 if (!cpu_has_mipsmt)
165 return NULL; 166 return NULL;
166 167
168 res = NULL;
169 spin_lock(&vpecontrol.vpe_list_lock);
167 list_for_each_entry(v, &vpecontrol.vpe_list, list) { 170 list_for_each_entry(v, &vpecontrol.vpe_list, list) {
168 if (v->minor == minor) 171 if (v->minor == minor) {
169 return v; 172 res = v;
173 break;
174 }
170 } 175 }
176 spin_unlock(&vpecontrol.vpe_list_lock);
171 177
172 return NULL; 178 return res;
173} 179}
174 180
175/* get the vpe associated with this minor */ 181/* get the vpe associated with this minor */
176static struct tc *get_tc(int index) 182static struct tc *get_tc(int index)
177{ 183{
178 struct tc *t; 184 struct tc *res, *t;
179 185
186 res = NULL;
187 spin_lock(&vpecontrol.tc_list_lock);
180 list_for_each_entry(t, &vpecontrol.tc_list, list) { 188 list_for_each_entry(t, &vpecontrol.tc_list, list) {
181 if (t->index == index) 189 if (t->index == index) {
182 return t; 190 res = t;
191 break;
192 }
183 } 193 }
194 spin_unlock(&vpecontrol.tc_list_lock);
184 195
185 return NULL; 196 return NULL;
186} 197}
@@ -190,15 +201,17 @@ static struct vpe *alloc_vpe(int minor)
190{ 201{
191 struct vpe *v; 202 struct vpe *v;
192 203
193 if ((v = kzalloc(sizeof(struct vpe), GFP_KERNEL)) == NULL) { 204 if ((v = kzalloc(sizeof(struct vpe), GFP_KERNEL)) == NULL)
194 return NULL; 205 return NULL;
195 }
196 206
197 INIT_LIST_HEAD(&v->tc); 207 INIT_LIST_HEAD(&v->tc);
208 spin_lock(&vpecontrol.vpe_list_lock);
198 list_add_tail(&v->list, &vpecontrol.vpe_list); 209 list_add_tail(&v->list, &vpecontrol.vpe_list);
210 spin_unlock(&vpecontrol.vpe_list_lock);
199 211
200 INIT_LIST_HEAD(&v->notify); 212 INIT_LIST_HEAD(&v->notify);
201 v->minor = minor; 213 v->minor = minor;
214
202 return v; 215 return v;
203} 216}
204 217
@@ -212,7 +225,10 @@ static struct tc *alloc_tc(int index)
212 225
213 INIT_LIST_HEAD(&tc->tc); 226 INIT_LIST_HEAD(&tc->tc);
214 tc->index = index; 227 tc->index = index;
228
229 spin_lock(&vpecontrol.tc_list_lock);
215 list_add_tail(&tc->list, &vpecontrol.tc_list); 230 list_add_tail(&tc->list, &vpecontrol.tc_list);
231 spin_unlock(&vpecontrol.tc_list_lock);
216 232
217out: 233out:
218 return tc; 234 return tc;
@@ -227,7 +243,7 @@ static void release_vpe(struct vpe *v)
227 kfree(v); 243 kfree(v);
228} 244}
229 245
230static void dump_mtregs(void) 246static void __maybe_unused dump_mtregs(void)
231{ 247{
232 unsigned long val; 248 unsigned long val;
233 249
@@ -1048,20 +1064,19 @@ static int vpe_open(struct inode *inode, struct file *filp)
1048 enum vpe_state state; 1064 enum vpe_state state;
1049 struct vpe_notifications *not; 1065 struct vpe_notifications *not;
1050 struct vpe *v; 1066 struct vpe *v;
1051 int ret, err = 0; 1067 int ret;
1052 1068
1053 lock_kernel();
1054 if (minor != iminor(inode)) { 1069 if (minor != iminor(inode)) {
1055 /* assume only 1 device at the moment. */ 1070 /* assume only 1 device at the moment. */
1056 printk(KERN_WARNING "VPE loader: only vpe1 is supported\n"); 1071 pr_warning("VPE loader: only vpe1 is supported\n");
1057 err = -ENODEV; 1072
1058 goto out; 1073 return -ENODEV;
1059 } 1074 }
1060 1075
1061 if ((v = get_vpe(tclimit)) == NULL) { 1076 if ((v = get_vpe(tclimit)) == NULL) {
1062 printk(KERN_WARNING "VPE loader: unable to get vpe\n"); 1077 pr_warning("VPE loader: unable to get vpe\n");
1063 err = -ENODEV; 1078
1064 goto out; 1079 return -ENODEV;
1065 } 1080 }
1066 1081
1067 state = xchg(&v->state, VPE_STATE_INUSE); 1082 state = xchg(&v->state, VPE_STATE_INUSE);
@@ -1101,8 +1116,8 @@ static int vpe_open(struct inode *inode, struct file *filp)
1101 v->shared_ptr = NULL; 1116 v->shared_ptr = NULL;
1102 v->__start = 0; 1117 v->__start = 0;
1103 1118
1104out:
1105 unlock_kernel(); 1119 unlock_kernel();
1120
1106 return 0; 1121 return 0;
1107} 1122}
1108 1123
@@ -1594,14 +1609,14 @@ static void __exit vpe_module_exit(void)
1594{ 1609{
1595 struct vpe *v, *n; 1610 struct vpe *v, *n;
1596 1611
1612 device_del(&vpe_device);
1613 unregister_chrdev(major, module_name);
1614
1615 /* No locking needed here */
1597 list_for_each_entry_safe(v, n, &vpecontrol.vpe_list, list) { 1616 list_for_each_entry_safe(v, n, &vpecontrol.vpe_list, list) {
1598 if (v->state != VPE_STATE_UNUSED) { 1617 if (v->state != VPE_STATE_UNUSED)
1599 release_vpe(v); 1618 release_vpe(v);
1600 }
1601 } 1619 }
1602
1603 device_del(&vpe_device);
1604 unregister_chrdev(major, module_name);
1605} 1620}
1606 1621
1607module_init(vpe_module_init); 1622module_init(vpe_module_init);
diff --git a/arch/mips/mm/sc-mips.c b/arch/mips/mm/sc-mips.c
index b55c2d1b998f..5ab5fa8c1d82 100644
--- a/arch/mips/mm/sc-mips.c
+++ b/arch/mips/mm/sc-mips.c
@@ -32,6 +32,11 @@ static void mips_sc_wback_inv(unsigned long addr, unsigned long size)
32 */ 32 */
33static void mips_sc_inv(unsigned long addr, unsigned long size) 33static void mips_sc_inv(unsigned long addr, unsigned long size)
34{ 34{
35 unsigned long lsize = cpu_scache_line_size();
36 unsigned long almask = ~(lsize - 1);
37
38 cache_op(Hit_Writeback_Inv_SD, addr & almask);
39 cache_op(Hit_Writeback_Inv_SD, (addr + size - 1) & almask);
35 blast_inv_scache_range(addr, addr + size); 40 blast_inv_scache_range(addr, addr + size);
36} 41}
37 42
diff --git a/arch/mips/oprofile/op_model_loongson2.c b/arch/mips/oprofile/op_model_loongson2.c
index 655cb8dec340..deed1d5d4982 100644
--- a/arch/mips/oprofile/op_model_loongson2.c
+++ b/arch/mips/oprofile/op_model_loongson2.c
@@ -44,7 +44,7 @@ static struct loongson2_register_config {
44 unsigned int ctrl; 44 unsigned int ctrl;
45 unsigned long long reset_counter1; 45 unsigned long long reset_counter1;
46 unsigned long long reset_counter2; 46 unsigned long long reset_counter2;
47 int cnt1_enalbed, cnt2_enalbed; 47 int cnt1_enabled, cnt2_enabled;
48} reg; 48} reg;
49 49
50DEFINE_SPINLOCK(sample_lock); 50DEFINE_SPINLOCK(sample_lock);
@@ -81,8 +81,8 @@ static void loongson2_reg_setup(struct op_counter_config *cfg)
81 81
82 reg.ctrl = ctrl; 82 reg.ctrl = ctrl;
83 83
84 reg.cnt1_enalbed = cfg[0].enabled; 84 reg.cnt1_enabled = cfg[0].enabled;
85 reg.cnt2_enalbed = cfg[1].enabled; 85 reg.cnt2_enabled = cfg[1].enabled;
86 86
87} 87}
88 88
@@ -99,7 +99,7 @@ static void loongson2_cpu_setup(void *args)
99static void loongson2_cpu_start(void *args) 99static void loongson2_cpu_start(void *args)
100{ 100{
101 /* Start all counters on current CPU */ 101 /* Start all counters on current CPU */
102 if (reg.cnt1_enalbed || reg.cnt2_enalbed) 102 if (reg.cnt1_enabled || reg.cnt2_enabled)
103 write_c0_perfctrl(reg.ctrl); 103 write_c0_perfctrl(reg.ctrl);
104} 104}
105 105
@@ -125,7 +125,7 @@ static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id)
125 */ 125 */
126 126
127 /* Check whether the irq belongs to me */ 127 /* Check whether the irq belongs to me */
128 enabled = reg.cnt1_enalbed | reg.cnt2_enalbed; 128 enabled = reg.cnt1_enabled | reg.cnt2_enabled;
129 if (!enabled) 129 if (!enabled)
130 return IRQ_NONE; 130 return IRQ_NONE;
131 131
@@ -136,12 +136,12 @@ static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id)
136 spin_lock_irqsave(&sample_lock, flags); 136 spin_lock_irqsave(&sample_lock, flags);
137 137
138 if (counter1 & LOONGSON2_PERFCNT_OVERFLOW) { 138 if (counter1 & LOONGSON2_PERFCNT_OVERFLOW) {
139 if (reg.cnt1_enalbed) 139 if (reg.cnt1_enabled)
140 oprofile_add_sample(regs, 0); 140 oprofile_add_sample(regs, 0);
141 counter1 = reg.reset_counter1; 141 counter1 = reg.reset_counter1;
142 } 142 }
143 if (counter2 & LOONGSON2_PERFCNT_OVERFLOW) { 143 if (counter2 & LOONGSON2_PERFCNT_OVERFLOW) {
144 if (reg.cnt2_enalbed) 144 if (reg.cnt2_enabled)
145 oprofile_add_sample(regs, 1); 145 oprofile_add_sample(regs, 1);
146 counter2 = reg.reset_counter2; 146 counter2 = reg.reset_counter2;
147 } 147 }
diff --git a/arch/mips/pci/ops-pmcmsp.c b/arch/mips/pci/ops-pmcmsp.c
index 109c95ca698b..32548b5d68d6 100644
--- a/arch/mips/pci/ops-pmcmsp.c
+++ b/arch/mips/pci/ops-pmcmsp.c
@@ -385,6 +385,7 @@ int msp_pcibios_config_access(unsigned char access_type,
385 unsigned long intr; 385 unsigned long intr;
386 unsigned long value; 386 unsigned long value;
387 static char pciirqflag; 387 static char pciirqflag;
388 int ret;
388#if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL) 389#if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL)
389 unsigned int vpe_status; 390 unsigned int vpe_status;
390#endif 391#endif
@@ -402,11 +403,13 @@ int msp_pcibios_config_access(unsigned char access_type,
402 * allocation assigns an interrupt handler to the interrupt. 403 * allocation assigns an interrupt handler to the interrupt.
403 */ 404 */
404 if (pciirqflag == 0) { 405 if (pciirqflag == 0) {
405 request_irq(MSP_INT_PCI,/* Hardcoded internal MSP7120 wiring */ 406 ret = request_irq(MSP_INT_PCI,/* Hardcoded internal MSP7120 wiring */
406 bpci_interrupt, 407 bpci_interrupt,
407 IRQF_SHARED | IRQF_DISABLED, 408 IRQF_SHARED | IRQF_DISABLED,
408 "PMC MSP PCI Host", 409 "PMC MSP PCI Host",
409 preg); 410 preg);
411 if (ret != 0)
412 return ret;
410 pciirqflag = ~0; 413 pciirqflag = ~0;
411 } 414 }
412 415
diff --git a/arch/mips/sgi-ip27/ip27-smp.c b/arch/mips/sgi-ip27/ip27-smp.c
index 9aa8f2951df6..c6851df9ab74 100644
--- a/arch/mips/sgi-ip27/ip27-smp.c
+++ b/arch/mips/sgi-ip27/ip27-smp.c
@@ -165,7 +165,7 @@ static void ip27_send_ipi_single(int destid, unsigned int action)
165 REMOTE_HUB_SEND_INTR(COMPACT_TO_NASID_NODEID(cpu_to_node(destid)), irq); 165 REMOTE_HUB_SEND_INTR(COMPACT_TO_NASID_NODEID(cpu_to_node(destid)), irq);
166} 166}
167 167
168static void ip27_send_ipi(const struct cpumask *mask, unsigned int action) 168static void ip27_send_ipi_mask(const struct cpumask *mask, unsigned int action)
169{ 169{
170 unsigned int i; 170 unsigned int i;
171 171
diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c
index ba59839a021e..4070268aa769 100644
--- a/arch/mips/sibyte/bcm1480/irq.c
+++ b/arch/mips/sibyte/bcm1480/irq.c
@@ -117,10 +117,6 @@ static int bcm1480_set_affinity(unsigned int irq, const struct cpumask *mask)
117 unsigned long flags; 117 unsigned long flags;
118 unsigned int irq_dirty; 118 unsigned int irq_dirty;
119 119
120 if (cpumask_weight(mask) != 1) {
121 printk("attempted to set irq affinity for irq %d to multiple CPUs\n", irq);
122 return -1;
123 }
124 i = cpumask_first(mask); 120 i = cpumask_first(mask);
125 121
126 /* Convert logical CPU to physical CPU */ 122 /* Convert logical CPU to physical CPU */
diff --git a/arch/mips/sibyte/common/sb_tbprof.c b/arch/mips/sibyte/common/sb_tbprof.c
index 637a194e5cd5..15ea778b5e66 100644
--- a/arch/mips/sibyte/common/sb_tbprof.c
+++ b/arch/mips/sibyte/common/sb_tbprof.c
@@ -403,36 +403,31 @@ static int sbprof_zbprof_stop(void)
403static int sbprof_tb_open(struct inode *inode, struct file *filp) 403static int sbprof_tb_open(struct inode *inode, struct file *filp)
404{ 404{
405 int minor; 405 int minor;
406 int err = 0;
407 406
408 lock_kernel();
409 minor = iminor(inode); 407 minor = iminor(inode);
410 if (minor != 0) { 408 if (minor != 0)
411 err = -ENODEV; 409 return -ENODEV;
412 goto out;
413 }
414 410
415 if (xchg(&sbp.open, SB_OPENING) != SB_CLOSED) { 411 if (xchg(&sbp.open, SB_OPENING) != SB_CLOSED)
416 err = -EBUSY; 412 return -EBUSY;
417 goto out;
418 }
419 413
420 memset(&sbp, 0, sizeof(struct sbprof_tb)); 414 memset(&sbp, 0, sizeof(struct sbprof_tb));
421 sbp.sbprof_tbbuf = vmalloc(MAX_TBSAMPLE_BYTES); 415 sbp.sbprof_tbbuf = vmalloc(MAX_TBSAMPLE_BYTES);
422 if (!sbp.sbprof_tbbuf) { 416 if (!sbp.sbprof_tbbuf) {
423 err = -ENOMEM; 417 sbp.open = SB_CLOSED;
424 goto out; 418 wmb();
419 return -ENOMEM;
425 } 420 }
421
426 memset(sbp.sbprof_tbbuf, 0, MAX_TBSAMPLE_BYTES); 422 memset(sbp.sbprof_tbbuf, 0, MAX_TBSAMPLE_BYTES);
427 init_waitqueue_head(&sbp.tb_sync); 423 init_waitqueue_head(&sbp.tb_sync);
428 init_waitqueue_head(&sbp.tb_read); 424 init_waitqueue_head(&sbp.tb_read);
429 mutex_init(&sbp.lock); 425 mutex_init(&sbp.lock);
430 426
431 sbp.open = SB_OPEN; 427 sbp.open = SB_OPEN;
428 wmb();
432 429
433 out: 430 return 0;
434 unlock_kernel();
435 return err;
436} 431}
437 432
438static int sbprof_tb_release(struct inode *inode, struct file *filp) 433static int sbprof_tb_release(struct inode *inode, struct file *filp)
@@ -440,7 +435,7 @@ static int sbprof_tb_release(struct inode *inode, struct file *filp)
440 int minor; 435 int minor;
441 436
442 minor = iminor(inode); 437 minor = iminor(inode);
443 if (minor != 0 || !sbp.open) 438 if (minor != 0 || sbp.open != SB_CLOSED)
444 return -ENODEV; 439 return -ENODEV;
445 440
446 mutex_lock(&sbp.lock); 441 mutex_lock(&sbp.lock);
@@ -449,7 +444,8 @@ static int sbprof_tb_release(struct inode *inode, struct file *filp)
449 sbprof_zbprof_stop(); 444 sbprof_zbprof_stop();
450 445
451 vfree(sbp.sbprof_tbbuf); 446 vfree(sbp.sbprof_tbbuf);
452 sbp.open = 0; 447 sbp.open = SB_CLOSED;
448 wmb();
453 449
454 mutex_unlock(&sbp.lock); 450 mutex_unlock(&sbp.lock);
455 451
@@ -583,7 +579,8 @@ static int __init sbprof_tb_init(void)
583 } 579 }
584 tb_dev = dev; 580 tb_dev = dev;
585 581
586 sbp.open = 0; 582 sbp.open = SB_CLOSED;
583 wmb();
587 tb_period = zbbus_mhz * 10000LL; 584 tb_period = zbbus_mhz * 10000LL;
588 pr_info(DEVNAME ": initialized - tb_period = %lld\n", 585 pr_info(DEVNAME ": initialized - tb_period = %lld\n",
589 (long long) tb_period); 586 (long long) tb_period);
diff --git a/arch/mips/sibyte/swarm/setup.c b/arch/mips/sibyte/swarm/setup.c
index 623ffc933c4c..5277aac96b0f 100644
--- a/arch/mips/sibyte/swarm/setup.c
+++ b/arch/mips/sibyte/swarm/setup.c
@@ -106,7 +106,7 @@ void read_persistent_clock(struct timespec *ts)
106 break; 106 break;
107 } 107 }
108 ts->tv_sec = sec; 108 ts->tv_sec = sec;
109 tv->tv_nsec = 0; 109 ts->tv_nsec = 0;
110} 110}
111 111
112int rtc_mips_set_time(unsigned long sec) 112int rtc_mips_set_time(unsigned long sec)
diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
index fbf965b31c14..17f38a781d47 100644
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -192,6 +192,10 @@ config PCMCIA_AU1X00
192 tristate "Au1x00 pcmcia support" 192 tristate "Au1x00 pcmcia support"
193 depends on SOC_AU1X00 && PCMCIA 193 depends on SOC_AU1X00 && PCMCIA
194 194
195config PCMCIA_BCM63XX
196 tristate "bcm63xx pcmcia support"
197 depends on BCM63XX && PCMCIA
198
195config PCMCIA_SA1100 199config PCMCIA_SA1100
196 tristate "SA1100 support" 200 tristate "SA1100 support"
197 depends on ARM && ARCH_SA1100 && PCMCIA 201 depends on ARM && ARCH_SA1100 && PCMCIA
diff --git a/drivers/pcmcia/Makefile b/drivers/pcmcia/Makefile
index 3247828aa203..a03a38acd77d 100644
--- a/drivers/pcmcia/Makefile
+++ b/drivers/pcmcia/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_PCMCIA_SA1111) += sa11xx_core.o sa1111_cs.o
27obj-$(CONFIG_M32R_PCC) += m32r_pcc.o 27obj-$(CONFIG_M32R_PCC) += m32r_pcc.o
28obj-$(CONFIG_M32R_CFC) += m32r_cfc.o 28obj-$(CONFIG_M32R_CFC) += m32r_cfc.o
29obj-$(CONFIG_PCMCIA_AU1X00) += au1x00_ss.o 29obj-$(CONFIG_PCMCIA_AU1X00) += au1x00_ss.o
30obj-$(CONFIG_PCMCIA_BCM63XX) += bcm63xx_pcmcia.o
30obj-$(CONFIG_PCMCIA_VRC4171) += vrc4171_card.o 31obj-$(CONFIG_PCMCIA_VRC4171) += vrc4171_card.o
31obj-$(CONFIG_PCMCIA_VRC4173) += vrc4173_cardu.o 32obj-$(CONFIG_PCMCIA_VRC4173) += vrc4173_cardu.o
32obj-$(CONFIG_OMAP_CF) += omap_cf.o 33obj-$(CONFIG_OMAP_CF) += omap_cf.o
diff --git a/drivers/pcmcia/bcm63xx_pcmcia.c b/drivers/pcmcia/bcm63xx_pcmcia.c
new file mode 100644
index 000000000000..bc88a3b19bb3
--- /dev/null
+++ b/drivers/pcmcia/bcm63xx_pcmcia.c
@@ -0,0 +1,536 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
7 */
8
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/ioport.h>
12#include <linux/timer.h>
13#include <linux/platform_device.h>
14#include <linux/delay.h>
15#include <linux/pci.h>
16#include <linux/gpio.h>
17
18#include <bcm63xx_regs.h>
19#include <bcm63xx_io.h>
20#include "bcm63xx_pcmcia.h"
21
22#define PFX "bcm63xx_pcmcia: "
23
24#ifdef CONFIG_CARDBUS
25/* if cardbus is used, platform device needs reference to actual pci
26 * device */
27static struct pci_dev *bcm63xx_cb_dev;
28#endif
29
30/*
31 * read/write helper for pcmcia regs
32 */
33static inline u32 pcmcia_readl(struct bcm63xx_pcmcia_socket *skt, u32 off)
34{
35 return bcm_readl(skt->base + off);
36}
37
38static inline void pcmcia_writel(struct bcm63xx_pcmcia_socket *skt,
39 u32 val, u32 off)
40{
41 bcm_writel(val, skt->base + off);
42}
43
44/*
45 * This callback should (re-)initialise the socket, turn on status
46 * interrupts and PCMCIA bus, and wait for power to stabilise so that
47 * the card status signals report correctly.
48 *
49 * Hardware cannot do that.
50 */
51static int bcm63xx_pcmcia_sock_init(struct pcmcia_socket *sock)
52{
53 return 0;
54}
55
56/*
57 * This callback should remove power on the socket, disable IRQs from
58 * the card, turn off status interrupts, and disable the PCMCIA bus.
59 *
60 * Hardware cannot do that.
61 */
62static int bcm63xx_pcmcia_suspend(struct pcmcia_socket *sock)
63{
64 return 0;
65}
66
67/*
68 * Implements the set_socket() operation for the in-kernel PCMCIA
69 * service (formerly SS_SetSocket in Card Services). We more or
70 * less punt all of this work and let the kernel handle the details
71 * of power configuration, reset, &c. We also record the value of
72 * `state' in order to regurgitate it to the PCMCIA core later.
73 */
74static int bcm63xx_pcmcia_set_socket(struct pcmcia_socket *sock,
75 socket_state_t *state)
76{
77 struct bcm63xx_pcmcia_socket *skt;
78 unsigned long flags;
79 u32 val;
80
81 skt = sock->driver_data;
82
83 spin_lock_irqsave(&skt->lock, flags);
84
85 /* note: hardware cannot control socket power, so we will
86 * always report SS_POWERON */
87
88 /* apply socket reset */
89 val = pcmcia_readl(skt, PCMCIA_C1_REG);
90 if (state->flags & SS_RESET)
91 val |= PCMCIA_C1_RESET_MASK;
92 else
93 val &= ~PCMCIA_C1_RESET_MASK;
94
95 /* reverse reset logic for cardbus card */
96 if (skt->card_detected && (skt->card_type & CARD_CARDBUS))
97 val ^= PCMCIA_C1_RESET_MASK;
98
99 pcmcia_writel(skt, val, PCMCIA_C1_REG);
100
101 /* keep requested state for event reporting */
102 skt->requested_state = *state;
103
104 spin_unlock_irqrestore(&skt->lock, flags);
105
106 return 0;
107}
108
109/*
110 * identity cardtype from VS[12] input, CD[12] input while only VS2 is
111 * floating, and CD[12] input while only VS1 is floating
112 */
113enum {
114 IN_VS1 = (1 << 0),
115 IN_VS2 = (1 << 1),
116 IN_CD1_VS2H = (1 << 2),
117 IN_CD2_VS2H = (1 << 3),
118 IN_CD1_VS1H = (1 << 4),
119 IN_CD2_VS1H = (1 << 5),
120};
121
122static const u8 vscd_to_cardtype[] = {
123
124 /* VS1 float, VS2 float */
125 [IN_VS1 | IN_VS2] = (CARD_PCCARD | CARD_5V),
126
127 /* VS1 grounded, VS2 float */
128 [IN_VS2] = (CARD_PCCARD | CARD_5V | CARD_3V),
129
130 /* VS1 grounded, VS2 grounded */
131 [0] = (CARD_PCCARD | CARD_5V | CARD_3V | CARD_XV),
132
133 /* VS1 tied to CD1, VS2 float */
134 [IN_VS1 | IN_VS2 | IN_CD1_VS1H] = (CARD_CARDBUS | CARD_3V),
135
136 /* VS1 grounded, VS2 tied to CD2 */
137 [IN_VS2 | IN_CD2_VS2H] = (CARD_CARDBUS | CARD_3V | CARD_XV),
138
139 /* VS1 tied to CD2, VS2 grounded */
140 [IN_VS1 | IN_CD2_VS1H] = (CARD_CARDBUS | CARD_3V | CARD_XV | CARD_YV),
141
142 /* VS1 float, VS2 grounded */
143 [IN_VS1] = (CARD_PCCARD | CARD_XV),
144
145 /* VS1 float, VS2 tied to CD2 */
146 [IN_VS1 | IN_VS2 | IN_CD2_VS2H] = (CARD_CARDBUS | CARD_3V),
147
148 /* VS1 float, VS2 tied to CD1 */
149 [IN_VS1 | IN_VS2 | IN_CD1_VS2H] = (CARD_CARDBUS | CARD_XV | CARD_YV),
150
151 /* VS1 tied to CD2, VS2 float */
152 [IN_VS1 | IN_VS2 | IN_CD2_VS1H] = (CARD_CARDBUS | CARD_YV),
153
154 /* VS2 grounded, VS1 is tied to CD1, CD2 is grounded */
155 [IN_VS1 | IN_CD1_VS1H] = 0, /* ignore cardbay */
156};
157
158/*
159 * poll hardware to check card insertion status
160 */
161static unsigned int __get_socket_status(struct bcm63xx_pcmcia_socket *skt)
162{
163 unsigned int stat;
164 u32 val;
165
166 stat = 0;
167
168 /* check CD for card presence */
169 val = pcmcia_readl(skt, PCMCIA_C1_REG);
170
171 if (!(val & PCMCIA_C1_CD1_MASK) && !(val & PCMCIA_C1_CD2_MASK))
172 stat |= SS_DETECT;
173
174 /* if new insertion, detect cardtype */
175 if ((stat & SS_DETECT) && !skt->card_detected) {
176 unsigned int stat = 0;
177
178 /* float VS1, float VS2 */
179 val |= PCMCIA_C1_VS1OE_MASK;
180 val |= PCMCIA_C1_VS2OE_MASK;
181 pcmcia_writel(skt, val, PCMCIA_C1_REG);
182
183 /* wait for output to stabilize and read VS[12] */
184 udelay(10);
185 val = pcmcia_readl(skt, PCMCIA_C1_REG);
186 stat |= (val & PCMCIA_C1_VS1_MASK) ? IN_VS1 : 0;
187 stat |= (val & PCMCIA_C1_VS2_MASK) ? IN_VS2 : 0;
188
189 /* drive VS1 low, float VS2 */
190 val &= ~PCMCIA_C1_VS1OE_MASK;
191 val |= PCMCIA_C1_VS2OE_MASK;
192 pcmcia_writel(skt, val, PCMCIA_C1_REG);
193
194 /* wait for output to stabilize and read CD[12] */
195 udelay(10);
196 val = pcmcia_readl(skt, PCMCIA_C1_REG);
197 stat |= (val & PCMCIA_C1_CD1_MASK) ? IN_CD1_VS2H : 0;
198 stat |= (val & PCMCIA_C1_CD2_MASK) ? IN_CD2_VS2H : 0;
199
200 /* float VS1, drive VS2 low */
201 val |= PCMCIA_C1_VS1OE_MASK;
202 val &= ~PCMCIA_C1_VS2OE_MASK;
203 pcmcia_writel(skt, val, PCMCIA_C1_REG);
204
205 /* wait for output to stabilize and read CD[12] */
206 udelay(10);
207 val = pcmcia_readl(skt, PCMCIA_C1_REG);
208 stat |= (val & PCMCIA_C1_CD1_MASK) ? IN_CD1_VS1H : 0;
209 stat |= (val & PCMCIA_C1_CD2_MASK) ? IN_CD2_VS1H : 0;
210
211 /* guess cardtype from all this */
212 skt->card_type = vscd_to_cardtype[stat];
213 if (!skt->card_type)
214 dev_err(&skt->socket.dev, "unsupported card type\n");
215
216 /* drive both VS pin to 0 again */
217 val &= ~(PCMCIA_C1_VS1OE_MASK | PCMCIA_C1_VS2OE_MASK);
218
219 /* enable correct logic */
220 val &= ~(PCMCIA_C1_EN_PCMCIA_MASK | PCMCIA_C1_EN_CARDBUS_MASK);
221 if (skt->card_type & CARD_PCCARD)
222 val |= PCMCIA_C1_EN_PCMCIA_MASK;
223 else
224 val |= PCMCIA_C1_EN_CARDBUS_MASK;
225
226 pcmcia_writel(skt, val, PCMCIA_C1_REG);
227 }
228 skt->card_detected = (stat & SS_DETECT) ? 1 : 0;
229
230 /* report card type/voltage */
231 if (skt->card_type & CARD_CARDBUS)
232 stat |= SS_CARDBUS;
233 if (skt->card_type & CARD_3V)
234 stat |= SS_3VCARD;
235 if (skt->card_type & CARD_XV)
236 stat |= SS_XVCARD;
237 stat |= SS_POWERON;
238
239 if (gpio_get_value(skt->pd->ready_gpio))
240 stat |= SS_READY;
241
242 return stat;
243}
244
245/*
246 * core request to get current socket status
247 */
248static int bcm63xx_pcmcia_get_status(struct pcmcia_socket *sock,
249 unsigned int *status)
250{
251 struct bcm63xx_pcmcia_socket *skt;
252
253 skt = sock->driver_data;
254
255 spin_lock_bh(&skt->lock);
256 *status = __get_socket_status(skt);
257 spin_unlock_bh(&skt->lock);
258
259 return 0;
260}
261
262/*
263 * socket polling timer callback
264 */
265static void bcm63xx_pcmcia_poll(unsigned long data)
266{
267 struct bcm63xx_pcmcia_socket *skt;
268 unsigned int stat, events;
269
270 skt = (struct bcm63xx_pcmcia_socket *)data;
271
272 spin_lock_bh(&skt->lock);
273
274 stat = __get_socket_status(skt);
275
276 /* keep only changed bits, and mask with required one from the
277 * core */
278 events = (stat ^ skt->old_status) & skt->requested_state.csc_mask;
279 skt->old_status = stat;
280 spin_unlock_bh(&skt->lock);
281
282 if (events)
283 pcmcia_parse_events(&skt->socket, events);
284
285 mod_timer(&skt->timer,
286 jiffies + msecs_to_jiffies(BCM63XX_PCMCIA_POLL_RATE));
287}
288
289static int bcm63xx_pcmcia_set_io_map(struct pcmcia_socket *sock,
290 struct pccard_io_map *map)
291{
292 /* this doesn't seem to be called by pcmcia layer if static
293 * mapping is used */
294 return 0;
295}
296
297static int bcm63xx_pcmcia_set_mem_map(struct pcmcia_socket *sock,
298 struct pccard_mem_map *map)
299{
300 struct bcm63xx_pcmcia_socket *skt;
301 struct resource *res;
302
303 skt = sock->driver_data;
304 if (map->flags & MAP_ATTRIB)
305 res = skt->attr_res;
306 else
307 res = skt->common_res;
308
309 map->static_start = res->start + map->card_start;
310 return 0;
311}
312
313static struct pccard_operations bcm63xx_pcmcia_operations = {
314 .init = bcm63xx_pcmcia_sock_init,
315 .suspend = bcm63xx_pcmcia_suspend,
316 .get_status = bcm63xx_pcmcia_get_status,
317 .set_socket = bcm63xx_pcmcia_set_socket,
318 .set_io_map = bcm63xx_pcmcia_set_io_map,
319 .set_mem_map = bcm63xx_pcmcia_set_mem_map,
320};
321
322/*
323 * register pcmcia socket to core
324 */
325static int __devinit bcm63xx_drv_pcmcia_probe(struct platform_device *pdev)
326{
327 struct bcm63xx_pcmcia_socket *skt;
328 struct pcmcia_socket *sock;
329 struct resource *res, *irq_res;
330 unsigned int regmem_size = 0, iomem_size = 0;
331 u32 val;
332 int ret;
333
334 skt = kzalloc(sizeof(*skt), GFP_KERNEL);
335 if (!skt)
336 return -ENOMEM;
337 spin_lock_init(&skt->lock);
338 sock = &skt->socket;
339 sock->driver_data = skt;
340
341 /* make sure we have all resources we need */
342 skt->common_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
343 skt->attr_res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
344 irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
345 skt->pd = pdev->dev.platform_data;
346 if (!skt->common_res || !skt->attr_res || !irq_res || !skt->pd) {
347 ret = -EINVAL;
348 goto err;
349 }
350
351 /* remap pcmcia registers */
352 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
353 regmem_size = resource_size(res);
354 if (!request_mem_region(res->start, regmem_size, "bcm63xx_pcmcia")) {
355 ret = -EINVAL;
356 goto err;
357 }
358 skt->reg_res = res;
359
360 skt->base = ioremap(res->start, regmem_size);
361 if (!skt->base) {
362 ret = -ENOMEM;
363 goto err;
364 }
365
366 /* remap io registers */
367 res = platform_get_resource(pdev, IORESOURCE_MEM, 3);
368 iomem_size = resource_size(res);
369 skt->io_base = ioremap(res->start, iomem_size);
370 if (!skt->io_base) {
371 ret = -ENOMEM;
372 goto err;
373 }
374
375 /* resources are static */
376 sock->resource_ops = &pccard_static_ops;
377 sock->ops = &bcm63xx_pcmcia_operations;
378 sock->owner = THIS_MODULE;
379 sock->dev.parent = &pdev->dev;
380 sock->features = SS_CAP_STATIC_MAP | SS_CAP_PCCARD;
381 sock->io_offset = (unsigned long)skt->io_base;
382 sock->pci_irq = irq_res->start;
383
384#ifdef CONFIG_CARDBUS
385 sock->cb_dev = bcm63xx_cb_dev;
386 if (bcm63xx_cb_dev)
387 sock->features |= SS_CAP_CARDBUS;
388#endif
389
390 /* assume common & attribute memory have the same size */
391 sock->map_size = resource_size(skt->common_res);
392
393 /* initialize polling timer */
394 setup_timer(&skt->timer, bcm63xx_pcmcia_poll, (unsigned long)skt);
395
396 /* initialize pcmcia control register, drive VS[12] to 0,
397 * leave CB IDSEL to the old value since it is set by the PCI
398 * layer */
399 val = pcmcia_readl(skt, PCMCIA_C1_REG);
400 val &= PCMCIA_C1_CBIDSEL_MASK;
401 val |= PCMCIA_C1_EN_PCMCIA_GPIO_MASK;
402 pcmcia_writel(skt, val, PCMCIA_C1_REG);
403
404 /*
405 * Hardware has only one set of timings registers, not one for
406 * each memory access type, so we configure them for the
407 * slowest one: attribute memory.
408 */
409 val = PCMCIA_C2_DATA16_MASK;
410 val |= 10 << PCMCIA_C2_RWCOUNT_SHIFT;
411 val |= 6 << PCMCIA_C2_INACTIVE_SHIFT;
412 val |= 3 << PCMCIA_C2_SETUP_SHIFT;
413 val |= 3 << PCMCIA_C2_HOLD_SHIFT;
414 pcmcia_writel(skt, val, PCMCIA_C2_REG);
415
416 ret = pcmcia_register_socket(sock);
417 if (ret)
418 goto err;
419
420 /* start polling socket */
421 mod_timer(&skt->timer,
422 jiffies + msecs_to_jiffies(BCM63XX_PCMCIA_POLL_RATE));
423
424 platform_set_drvdata(pdev, skt);
425 return 0;
426
427err:
428 if (skt->io_base)
429 iounmap(skt->io_base);
430 if (skt->base)
431 iounmap(skt->base);
432 if (skt->reg_res)
433 release_mem_region(skt->reg_res->start, regmem_size);
434 kfree(skt);
435 return ret;
436}
437
438static int __devexit bcm63xx_drv_pcmcia_remove(struct platform_device *pdev)
439{
440 struct bcm63xx_pcmcia_socket *skt;
441 struct resource *res;
442
443 skt = platform_get_drvdata(pdev);
444 del_timer_sync(&skt->timer);
445 iounmap(skt->base);
446 iounmap(skt->io_base);
447 res = skt->reg_res;
448 release_mem_region(res->start, resource_size(res));
449 kfree(skt);
450 return 0;
451}
452
453struct platform_driver bcm63xx_pcmcia_driver = {
454 .probe = bcm63xx_drv_pcmcia_probe,
455 .remove = __devexit_p(bcm63xx_drv_pcmcia_remove),
456 .driver = {
457 .name = "bcm63xx_pcmcia",
458 .owner = THIS_MODULE,
459 },
460};
461
462#ifdef CONFIG_CARDBUS
463static int __devinit bcm63xx_cb_probe(struct pci_dev *dev,
464 const struct pci_device_id *id)
465{
466 /* keep pci device */
467 bcm63xx_cb_dev = dev;
468 return platform_driver_register(&bcm63xx_pcmcia_driver);
469}
470
471static void __devexit bcm63xx_cb_exit(struct pci_dev *dev)
472{
473 platform_driver_unregister(&bcm63xx_pcmcia_driver);
474 bcm63xx_cb_dev = NULL;
475}
476
477static struct pci_device_id bcm63xx_cb_table[] = {
478 {
479 .vendor = PCI_VENDOR_ID_BROADCOM,
480 .device = BCM6348_CPU_ID,
481 .subvendor = PCI_VENDOR_ID_BROADCOM,
482 .subdevice = PCI_ANY_ID,
483 .class = PCI_CLASS_BRIDGE_CARDBUS << 8,
484 .class_mask = ~0,
485 },
486
487 {
488 .vendor = PCI_VENDOR_ID_BROADCOM,
489 .device = BCM6358_CPU_ID,
490 .subvendor = PCI_VENDOR_ID_BROADCOM,
491 .subdevice = PCI_ANY_ID,
492 .class = PCI_CLASS_BRIDGE_CARDBUS << 8,
493 .class_mask = ~0,
494 },
495
496 { },
497};
498
499MODULE_DEVICE_TABLE(pci, bcm63xx_cb_table);
500
501static struct pci_driver bcm63xx_cardbus_driver = {
502 .name = "bcm63xx_cardbus",
503 .id_table = bcm63xx_cb_table,
504 .probe = bcm63xx_cb_probe,
505 .remove = __devexit_p(bcm63xx_cb_exit),
506};
507#endif
508
509/*
510 * if cardbus support is enabled, register our platform device after
511 * our fake cardbus bridge has been registered
512 */
513static int __init bcm63xx_pcmcia_init(void)
514{
515#ifdef CONFIG_CARDBUS
516 return pci_register_driver(&bcm63xx_cardbus_driver);
517#else
518 return platform_driver_register(&bcm63xx_pcmcia_driver);
519#endif
520}
521
522static void __exit bcm63xx_pcmcia_exit(void)
523{
524#ifdef CONFIG_CARDBUS
525 return pci_unregister_driver(&bcm63xx_cardbus_driver);
526#else
527 platform_driver_unregister(&bcm63xx_pcmcia_driver);
528#endif
529}
530
531module_init(bcm63xx_pcmcia_init);
532module_exit(bcm63xx_pcmcia_exit);
533
534MODULE_LICENSE("GPL");
535MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
536MODULE_DESCRIPTION("Linux PCMCIA Card Services: bcm63xx Socket Controller");
diff --git a/drivers/pcmcia/bcm63xx_pcmcia.h b/drivers/pcmcia/bcm63xx_pcmcia.h
new file mode 100644
index 000000000000..ed957399d863
--- /dev/null
+++ b/drivers/pcmcia/bcm63xx_pcmcia.h
@@ -0,0 +1,60 @@
1#ifndef BCM63XX_PCMCIA_H_
2#define BCM63XX_PCMCIA_H_
3
4#include <linux/types.h>
5#include <linux/timer.h>
6#include <pcmcia/ss.h>
7#include <bcm63xx_dev_pcmcia.h>
8
9/* socket polling rate in ms */
10#define BCM63XX_PCMCIA_POLL_RATE 500
11
12enum {
13 CARD_CARDBUS = (1 << 0),
14 CARD_PCCARD = (1 << 1),
15 CARD_5V = (1 << 2),
16 CARD_3V = (1 << 3),
17 CARD_XV = (1 << 4),
18 CARD_YV = (1 << 5),
19};
20
21struct bcm63xx_pcmcia_socket {
22 struct pcmcia_socket socket;
23
24 /* platform specific data */
25 struct bcm63xx_pcmcia_platform_data *pd;
26
27 /* all regs access are protected by this spinlock */
28 spinlock_t lock;
29
30 /* pcmcia registers resource */
31 struct resource *reg_res;
32
33 /* base remapped address of registers */
34 void __iomem *base;
35
36 /* whether a card is detected at the moment */
37 int card_detected;
38
39 /* type of detected card (mask of above enum) */
40 u8 card_type;
41
42 /* keep last socket status to implement event reporting */
43 unsigned int old_status;
44
45 /* backup of requested socket state */
46 socket_state_t requested_state;
47
48 /* timer used for socket status polling */
49 struct timer_list timer;
50
51 /* attribute/common memory resources */
52 struct resource *attr_res;
53 struct resource *common_res;
54 struct resource *io_res;
55
56 /* base address of io memory */
57 void __iomem *io_base;
58};
59
60#endif /* BCM63XX_PCMCIA_H_ */
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 03422ce878cf..e70712044a7e 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -1458,4 +1458,23 @@ config SERIAL_TIMBERDALE
1458 ---help--- 1458 ---help---
1459 Add support for UART controller on timberdale. 1459 Add support for UART controller on timberdale.
1460 1460
1461config SERIAL_BCM63XX
1462 tristate "bcm63xx serial port support"
1463 select SERIAL_CORE
1464 depends on BCM63XX
1465 help
1466 If you have a bcm63xx CPU, you can enable its onboard
1467 serial port by enabling this options.
1468
1469 To compile this driver as a module, choose M here: the
1470 module will be called bcm963xx_uart.
1471
1472config SERIAL_BCM63XX_CONSOLE
1473 bool "Console on bcm63xx serial port"
1474 depends on SERIAL_BCM63XX=y
1475 select SERIAL_CORE_CONSOLE
1476 help
1477 If you have enabled the serial port on the bcm63xx CPU
1478 you can make it the console by answering Y to this option.
1479
1461endmenu 1480endmenu
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 97f6fcc8b432..d21d5dd5d048 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_SERIAL_CLPS711X) += clps711x.o
34obj-$(CONFIG_SERIAL_PXA) += pxa.o 34obj-$(CONFIG_SERIAL_PXA) += pxa.o
35obj-$(CONFIG_SERIAL_PNX8XXX) += pnx8xxx_uart.o 35obj-$(CONFIG_SERIAL_PNX8XXX) += pnx8xxx_uart.o
36obj-$(CONFIG_SERIAL_SA1100) += sa1100.o 36obj-$(CONFIG_SERIAL_SA1100) += sa1100.o
37obj-$(CONFIG_SERIAL_BCM63XX) += bcm63xx_uart.o
37obj-$(CONFIG_SERIAL_BFIN) += bfin_5xx.o 38obj-$(CONFIG_SERIAL_BFIN) += bfin_5xx.o
38obj-$(CONFIG_SERIAL_BFIN_SPORT) += bfin_sport_uart.o 39obj-$(CONFIG_SERIAL_BFIN_SPORT) += bfin_sport_uart.o
39obj-$(CONFIG_SERIAL_SAMSUNG) += samsung.o 40obj-$(CONFIG_SERIAL_SAMSUNG) += samsung.o
diff --git a/drivers/serial/bcm63xx_uart.c b/drivers/serial/bcm63xx_uart.c
new file mode 100644
index 000000000000..beddaa6e9069
--- /dev/null
+++ b/drivers/serial/bcm63xx_uart.c
@@ -0,0 +1,890 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Derived from many drivers using generic_serial interface.
7 *
8 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
9 *
10 * Serial driver for BCM63xx integrated UART.
11 *
12 * Hardware flow control was _not_ tested since I only have RX/TX on
13 * my board.
14 */
15
16#if defined(CONFIG_SERIAL_BCM63XX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
17#define SUPPORT_SYSRQ
18#endif
19
20#include <linux/kernel.h>
21#include <linux/platform_device.h>
22#include <linux/init.h>
23#include <linux/delay.h>
24#include <linux/module.h>
25#include <linux/console.h>
26#include <linux/clk.h>
27#include <linux/tty.h>
28#include <linux/tty_flip.h>
29#include <linux/sysrq.h>
30#include <linux/serial.h>
31#include <linux/serial_core.h>
32
33#include <bcm63xx_clk.h>
34#include <bcm63xx_irq.h>
35#include <bcm63xx_regs.h>
36#include <bcm63xx_io.h>
37
38#define BCM63XX_NR_UARTS 1
39
40static struct uart_port ports[BCM63XX_NR_UARTS];
41
42/*
43 * rx interrupt mask / stat
44 *
45 * mask:
46 * - rx fifo full
47 * - rx fifo above threshold
48 * - rx fifo not empty for too long
49 */
50#define UART_RX_INT_MASK (UART_IR_MASK(UART_IR_RXOVER) | \
51 UART_IR_MASK(UART_IR_RXTHRESH) | \
52 UART_IR_MASK(UART_IR_RXTIMEOUT))
53
54#define UART_RX_INT_STAT (UART_IR_STAT(UART_IR_RXOVER) | \
55 UART_IR_STAT(UART_IR_RXTHRESH) | \
56 UART_IR_STAT(UART_IR_RXTIMEOUT))
57
58/*
59 * tx interrupt mask / stat
60 *
61 * mask:
62 * - tx fifo empty
63 * - tx fifo below threshold
64 */
65#define UART_TX_INT_MASK (UART_IR_MASK(UART_IR_TXEMPTY) | \
66 UART_IR_MASK(UART_IR_TXTRESH))
67
68#define UART_TX_INT_STAT (UART_IR_STAT(UART_IR_TXEMPTY) | \
69 UART_IR_STAT(UART_IR_TXTRESH))
70
71/*
72 * external input interrupt
73 *
74 * mask: any edge on CTS, DCD
75 */
76#define UART_EXTINP_INT_MASK (UART_EXTINP_IRMASK(UART_EXTINP_IR_CTS) | \
77 UART_EXTINP_IRMASK(UART_EXTINP_IR_DCD))
78
79/*
80 * handy uart register accessor
81 */
82static inline unsigned int bcm_uart_readl(struct uart_port *port,
83 unsigned int offset)
84{
85 return bcm_readl(port->membase + offset);
86}
87
88static inline void bcm_uart_writel(struct uart_port *port,
89 unsigned int value, unsigned int offset)
90{
91 bcm_writel(value, port->membase + offset);
92}
93
94/*
95 * serial core request to check if uart tx fifo is empty
96 */
97static unsigned int bcm_uart_tx_empty(struct uart_port *port)
98{
99 unsigned int val;
100
101 val = bcm_uart_readl(port, UART_IR_REG);
102 return (val & UART_IR_STAT(UART_IR_TXEMPTY)) ? 1 : 0;
103}
104
105/*
106 * serial core request to set RTS and DTR pin state and loopback mode
107 */
108static void bcm_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
109{
110 unsigned int val;
111
112 val = bcm_uart_readl(port, UART_MCTL_REG);
113 val &= ~(UART_MCTL_DTR_MASK | UART_MCTL_RTS_MASK);
114 /* invert of written value is reflected on the pin */
115 if (!(mctrl & TIOCM_DTR))
116 val |= UART_MCTL_DTR_MASK;
117 if (!(mctrl & TIOCM_RTS))
118 val |= UART_MCTL_RTS_MASK;
119 bcm_uart_writel(port, val, UART_MCTL_REG);
120
121 val = bcm_uart_readl(port, UART_CTL_REG);
122 if (mctrl & TIOCM_LOOP)
123 val |= UART_CTL_LOOPBACK_MASK;
124 else
125 val &= ~UART_CTL_LOOPBACK_MASK;
126 bcm_uart_writel(port, val, UART_CTL_REG);
127}
128
129/*
130 * serial core request to return RI, CTS, DCD and DSR pin state
131 */
132static unsigned int bcm_uart_get_mctrl(struct uart_port *port)
133{
134 unsigned int val, mctrl;
135
136 mctrl = 0;
137 val = bcm_uart_readl(port, UART_EXTINP_REG);
138 if (val & UART_EXTINP_RI_MASK)
139 mctrl |= TIOCM_RI;
140 if (val & UART_EXTINP_CTS_MASK)
141 mctrl |= TIOCM_CTS;
142 if (val & UART_EXTINP_DCD_MASK)
143 mctrl |= TIOCM_CD;
144 if (val & UART_EXTINP_DSR_MASK)
145 mctrl |= TIOCM_DSR;
146 return mctrl;
147}
148
149/*
150 * serial core request to disable tx ASAP (used for flow control)
151 */
152static void bcm_uart_stop_tx(struct uart_port *port)
153{
154 unsigned int val;
155
156 val = bcm_uart_readl(port, UART_CTL_REG);
157 val &= ~(UART_CTL_TXEN_MASK);
158 bcm_uart_writel(port, val, UART_CTL_REG);
159
160 val = bcm_uart_readl(port, UART_IR_REG);
161 val &= ~UART_TX_INT_MASK;
162 bcm_uart_writel(port, val, UART_IR_REG);
163}
164
165/*
166 * serial core request to (re)enable tx
167 */
168static void bcm_uart_start_tx(struct uart_port *port)
169{
170 unsigned int val;
171
172 val = bcm_uart_readl(port, UART_IR_REG);
173 val |= UART_TX_INT_MASK;
174 bcm_uart_writel(port, val, UART_IR_REG);
175
176 val = bcm_uart_readl(port, UART_CTL_REG);
177 val |= UART_CTL_TXEN_MASK;
178 bcm_uart_writel(port, val, UART_CTL_REG);
179}
180
181/*
182 * serial core request to stop rx, called before port shutdown
183 */
184static void bcm_uart_stop_rx(struct uart_port *port)
185{
186 unsigned int val;
187
188 val = bcm_uart_readl(port, UART_IR_REG);
189 val &= ~UART_RX_INT_MASK;
190 bcm_uart_writel(port, val, UART_IR_REG);
191}
192
193/*
194 * serial core request to enable modem status interrupt reporting
195 */
196static void bcm_uart_enable_ms(struct uart_port *port)
197{
198 unsigned int val;
199
200 val = bcm_uart_readl(port, UART_IR_REG);
201 val |= UART_IR_MASK(UART_IR_EXTIP);
202 bcm_uart_writel(port, val, UART_IR_REG);
203}
204
205/*
206 * serial core request to start/stop emitting break char
207 */
208static void bcm_uart_break_ctl(struct uart_port *port, int ctl)
209{
210 unsigned long flags;
211 unsigned int val;
212
213 spin_lock_irqsave(&port->lock, flags);
214
215 val = bcm_uart_readl(port, UART_CTL_REG);
216 if (ctl)
217 val |= UART_CTL_XMITBRK_MASK;
218 else
219 val &= ~UART_CTL_XMITBRK_MASK;
220 bcm_uart_writel(port, val, UART_CTL_REG);
221
222 spin_unlock_irqrestore(&port->lock, flags);
223}
224
225/*
226 * return port type in string format
227 */
228static const char *bcm_uart_type(struct uart_port *port)
229{
230 return (port->type == PORT_BCM63XX) ? "bcm63xx_uart" : NULL;
231}
232
233/*
234 * read all chars in rx fifo and send them to core
235 */
236static void bcm_uart_do_rx(struct uart_port *port)
237{
238 struct tty_struct *tty;
239 unsigned int max_count;
240
241 /* limit number of char read in interrupt, should not be
242 * higher than fifo size anyway since we're much faster than
243 * serial port */
244 max_count = 32;
245 tty = port->info->port.tty;
246 do {
247 unsigned int iestat, c, cstat;
248 char flag;
249
250 /* get overrun/fifo empty information from ier
251 * register */
252 iestat = bcm_uart_readl(port, UART_IR_REG);
253 if (!(iestat & UART_IR_STAT(UART_IR_RXNOTEMPTY)))
254 break;
255
256 cstat = c = bcm_uart_readl(port, UART_FIFO_REG);
257 port->icount.rx++;
258 flag = TTY_NORMAL;
259 c &= 0xff;
260
261 if (unlikely((cstat & UART_FIFO_ANYERR_MASK))) {
262 /* do stats first */
263 if (cstat & UART_FIFO_BRKDET_MASK) {
264 port->icount.brk++;
265 if (uart_handle_break(port))
266 continue;
267 }
268
269 if (cstat & UART_FIFO_PARERR_MASK)
270 port->icount.parity++;
271 if (cstat & UART_FIFO_FRAMEERR_MASK)
272 port->icount.frame++;
273
274 /* update flag wrt read_status_mask */
275 cstat &= port->read_status_mask;
276 if (cstat & UART_FIFO_BRKDET_MASK)
277 flag = TTY_BREAK;
278 if (cstat & UART_FIFO_FRAMEERR_MASK)
279 flag = TTY_FRAME;
280 if (cstat & UART_FIFO_PARERR_MASK)
281 flag = TTY_PARITY;
282 }
283
284 if (uart_handle_sysrq_char(port, c))
285 continue;
286
287 if (unlikely(iestat & UART_IR_STAT(UART_IR_RXOVER))) {
288 port->icount.overrun++;
289 tty_insert_flip_char(tty, 0, TTY_OVERRUN);
290 }
291
292 if ((cstat & port->ignore_status_mask) == 0)
293 tty_insert_flip_char(tty, c, flag);
294
295 } while (--max_count);
296
297 tty_flip_buffer_push(tty);
298}
299
300/*
301 * fill tx fifo with chars to send, stop when fifo is about to be full
302 * or when all chars have been sent.
303 */
304static void bcm_uart_do_tx(struct uart_port *port)
305{
306 struct circ_buf *xmit;
307 unsigned int val, max_count;
308
309 if (port->x_char) {
310 bcm_uart_writel(port, port->x_char, UART_FIFO_REG);
311 port->icount.tx++;
312 port->x_char = 0;
313 return;
314 }
315
316 if (uart_tx_stopped(port)) {
317 bcm_uart_stop_tx(port);
318 return;
319 }
320
321 xmit = &port->info->xmit;
322 if (uart_circ_empty(xmit))
323 goto txq_empty;
324
325 val = bcm_uart_readl(port, UART_MCTL_REG);
326 val = (val & UART_MCTL_TXFIFOFILL_MASK) >> UART_MCTL_TXFIFOFILL_SHIFT;
327 max_count = port->fifosize - val;
328
329 while (max_count--) {
330 unsigned int c;
331
332 c = xmit->buf[xmit->tail];
333 bcm_uart_writel(port, c, UART_FIFO_REG);
334 xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
335 port->icount.tx++;
336 if (uart_circ_empty(xmit))
337 break;
338 }
339
340 if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
341 uart_write_wakeup(port);
342
343 if (uart_circ_empty(xmit))
344 goto txq_empty;
345 return;
346
347txq_empty:
348 /* nothing to send, disable transmit interrupt */
349 val = bcm_uart_readl(port, UART_IR_REG);
350 val &= ~UART_TX_INT_MASK;
351 bcm_uart_writel(port, val, UART_IR_REG);
352 return;
353}
354
355/*
356 * process uart interrupt
357 */
358static irqreturn_t bcm_uart_interrupt(int irq, void *dev_id)
359{
360 struct uart_port *port;
361 unsigned int irqstat;
362
363 port = dev_id;
364 spin_lock(&port->lock);
365
366 irqstat = bcm_uart_readl(port, UART_IR_REG);
367 if (irqstat & UART_RX_INT_STAT)
368 bcm_uart_do_rx(port);
369
370 if (irqstat & UART_TX_INT_STAT)
371 bcm_uart_do_tx(port);
372
373 if (irqstat & UART_IR_MASK(UART_IR_EXTIP)) {
374 unsigned int estat;
375
376 estat = bcm_uart_readl(port, UART_EXTINP_REG);
377 if (estat & UART_EXTINP_IRSTAT(UART_EXTINP_IR_CTS))
378 uart_handle_cts_change(port,
379 estat & UART_EXTINP_CTS_MASK);
380 if (estat & UART_EXTINP_IRSTAT(UART_EXTINP_IR_DCD))
381 uart_handle_dcd_change(port,
382 estat & UART_EXTINP_DCD_MASK);
383 }
384
385 spin_unlock(&port->lock);
386 return IRQ_HANDLED;
387}
388
389/*
390 * enable rx & tx operation on uart
391 */
392static void bcm_uart_enable(struct uart_port *port)
393{
394 unsigned int val;
395
396 val = bcm_uart_readl(port, UART_CTL_REG);
397 val |= (UART_CTL_BRGEN_MASK | UART_CTL_TXEN_MASK | UART_CTL_RXEN_MASK);
398 bcm_uart_writel(port, val, UART_CTL_REG);
399}
400
401/*
402 * disable rx & tx operation on uart
403 */
404static void bcm_uart_disable(struct uart_port *port)
405{
406 unsigned int val;
407
408 val = bcm_uart_readl(port, UART_CTL_REG);
409 val &= ~(UART_CTL_BRGEN_MASK | UART_CTL_TXEN_MASK |
410 UART_CTL_RXEN_MASK);
411 bcm_uart_writel(port, val, UART_CTL_REG);
412}
413
414/*
415 * clear all unread data in rx fifo and unsent data in tx fifo
416 */
417static void bcm_uart_flush(struct uart_port *port)
418{
419 unsigned int val;
420
421 /* empty rx and tx fifo */
422 val = bcm_uart_readl(port, UART_CTL_REG);
423 val |= UART_CTL_RSTRXFIFO_MASK | UART_CTL_RSTTXFIFO_MASK;
424 bcm_uart_writel(port, val, UART_CTL_REG);
425
426 /* read any pending char to make sure all irq status are
427 * cleared */
428 (void)bcm_uart_readl(port, UART_FIFO_REG);
429}
430
431/*
432 * serial core request to initialize uart and start rx operation
433 */
434static int bcm_uart_startup(struct uart_port *port)
435{
436 unsigned int val;
437 int ret;
438
439 /* mask all irq and flush port */
440 bcm_uart_disable(port);
441 bcm_uart_writel(port, 0, UART_IR_REG);
442 bcm_uart_flush(port);
443
444 /* clear any pending external input interrupt */
445 (void)bcm_uart_readl(port, UART_EXTINP_REG);
446
447 /* set rx/tx fifo thresh to fifo half size */
448 val = bcm_uart_readl(port, UART_MCTL_REG);
449 val &= ~(UART_MCTL_RXFIFOTHRESH_MASK | UART_MCTL_TXFIFOTHRESH_MASK);
450 val |= (port->fifosize / 2) << UART_MCTL_RXFIFOTHRESH_SHIFT;
451 val |= (port->fifosize / 2) << UART_MCTL_TXFIFOTHRESH_SHIFT;
452 bcm_uart_writel(port, val, UART_MCTL_REG);
453
454 /* set rx fifo timeout to 1 char time */
455 val = bcm_uart_readl(port, UART_CTL_REG);
456 val &= ~UART_CTL_RXTMOUTCNT_MASK;
457 val |= 1 << UART_CTL_RXTMOUTCNT_SHIFT;
458 bcm_uart_writel(port, val, UART_CTL_REG);
459
460 /* report any edge on dcd and cts */
461 val = UART_EXTINP_INT_MASK;
462 val |= UART_EXTINP_DCD_NOSENSE_MASK;
463 val |= UART_EXTINP_CTS_NOSENSE_MASK;
464 bcm_uart_writel(port, val, UART_EXTINP_REG);
465
466 /* register irq and enable rx interrupts */
467 ret = request_irq(port->irq, bcm_uart_interrupt, 0,
468 bcm_uart_type(port), port);
469 if (ret)
470 return ret;
471 bcm_uart_writel(port, UART_RX_INT_MASK, UART_IR_REG);
472 bcm_uart_enable(port);
473 return 0;
474}
475
476/*
477 * serial core request to flush & disable uart
478 */
479static void bcm_uart_shutdown(struct uart_port *port)
480{
481 unsigned long flags;
482
483 spin_lock_irqsave(&port->lock, flags);
484 bcm_uart_writel(port, 0, UART_IR_REG);
485 spin_unlock_irqrestore(&port->lock, flags);
486
487 bcm_uart_disable(port);
488 bcm_uart_flush(port);
489 free_irq(port->irq, port);
490}
491
492/*
493 * serial core request to change current uart setting
494 */
495static void bcm_uart_set_termios(struct uart_port *port,
496 struct ktermios *new,
497 struct ktermios *old)
498{
499 unsigned int ctl, baud, quot, ier;
500 unsigned long flags;
501
502 spin_lock_irqsave(&port->lock, flags);
503
504 /* disable uart while changing speed */
505 bcm_uart_disable(port);
506 bcm_uart_flush(port);
507
508 /* update Control register */
509 ctl = bcm_uart_readl(port, UART_CTL_REG);
510 ctl &= ~UART_CTL_BITSPERSYM_MASK;
511
512 switch (new->c_cflag & CSIZE) {
513 case CS5:
514 ctl |= (0 << UART_CTL_BITSPERSYM_SHIFT);
515 break;
516 case CS6:
517 ctl |= (1 << UART_CTL_BITSPERSYM_SHIFT);
518 break;
519 case CS7:
520 ctl |= (2 << UART_CTL_BITSPERSYM_SHIFT);
521 break;
522 default:
523 ctl |= (3 << UART_CTL_BITSPERSYM_SHIFT);
524 break;
525 }
526
527 ctl &= ~UART_CTL_STOPBITS_MASK;
528 if (new->c_cflag & CSTOPB)
529 ctl |= UART_CTL_STOPBITS_2;
530 else
531 ctl |= UART_CTL_STOPBITS_1;
532
533 ctl &= ~(UART_CTL_RXPAREN_MASK | UART_CTL_TXPAREN_MASK);
534 if (new->c_cflag & PARENB)
535 ctl |= (UART_CTL_RXPAREN_MASK | UART_CTL_TXPAREN_MASK);
536 ctl &= ~(UART_CTL_RXPAREVEN_MASK | UART_CTL_TXPAREVEN_MASK);
537 if (new->c_cflag & PARODD)
538 ctl |= (UART_CTL_RXPAREVEN_MASK | UART_CTL_TXPAREVEN_MASK);
539 bcm_uart_writel(port, ctl, UART_CTL_REG);
540
541 /* update Baudword register */
542 baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
543 quot = uart_get_divisor(port, baud) - 1;
544 bcm_uart_writel(port, quot, UART_BAUD_REG);
545
546 /* update Interrupt register */
547 ier = bcm_uart_readl(port, UART_IR_REG);
548
549 ier &= ~UART_IR_MASK(UART_IR_EXTIP);
550 if (UART_ENABLE_MS(port, new->c_cflag))
551 ier |= UART_IR_MASK(UART_IR_EXTIP);
552
553 bcm_uart_writel(port, ier, UART_IR_REG);
554
555 /* update read/ignore mask */
556 port->read_status_mask = UART_FIFO_VALID_MASK;
557 if (new->c_iflag & INPCK) {
558 port->read_status_mask |= UART_FIFO_FRAMEERR_MASK;
559 port->read_status_mask |= UART_FIFO_PARERR_MASK;
560 }
561 if (new->c_iflag & (BRKINT))
562 port->read_status_mask |= UART_FIFO_BRKDET_MASK;
563
564 port->ignore_status_mask = 0;
565 if (new->c_iflag & IGNPAR)
566 port->ignore_status_mask |= UART_FIFO_PARERR_MASK;
567 if (new->c_iflag & IGNBRK)
568 port->ignore_status_mask |= UART_FIFO_BRKDET_MASK;
569 if (!(new->c_cflag & CREAD))
570 port->ignore_status_mask |= UART_FIFO_VALID_MASK;
571
572 uart_update_timeout(port, new->c_cflag, baud);
573 bcm_uart_enable(port);
574 spin_unlock_irqrestore(&port->lock, flags);
575}
576
577/*
578 * serial core request to claim uart iomem
579 */
580static int bcm_uart_request_port(struct uart_port *port)
581{
582 unsigned int size;
583
584 size = RSET_UART_SIZE;
585 if (!request_mem_region(port->mapbase, size, "bcm63xx")) {
586 dev_err(port->dev, "Memory region busy\n");
587 return -EBUSY;
588 }
589
590 port->membase = ioremap(port->mapbase, size);
591 if (!port->membase) {
592 dev_err(port->dev, "Unable to map registers\n");
593 release_mem_region(port->mapbase, size);
594 return -EBUSY;
595 }
596 return 0;
597}
598
599/*
600 * serial core request to release uart iomem
601 */
602static void bcm_uart_release_port(struct uart_port *port)
603{
604 release_mem_region(port->mapbase, RSET_UART_SIZE);
605 iounmap(port->membase);
606}
607
608/*
609 * serial core request to do any port required autoconfiguration
610 */
611static void bcm_uart_config_port(struct uart_port *port, int flags)
612{
613 if (flags & UART_CONFIG_TYPE) {
614 if (bcm_uart_request_port(port))
615 return;
616 port->type = PORT_BCM63XX;
617 }
618}
619
620/*
621 * serial core request to check that port information in serinfo are
622 * suitable
623 */
624static int bcm_uart_verify_port(struct uart_port *port,
625 struct serial_struct *serinfo)
626{
627 if (port->type != PORT_BCM63XX)
628 return -EINVAL;
629 if (port->irq != serinfo->irq)
630 return -EINVAL;
631 if (port->iotype != serinfo->io_type)
632 return -EINVAL;
633 if (port->mapbase != (unsigned long)serinfo->iomem_base)
634 return -EINVAL;
635 return 0;
636}
637
638/* serial core callbacks */
639static struct uart_ops bcm_uart_ops = {
640 .tx_empty = bcm_uart_tx_empty,
641 .get_mctrl = bcm_uart_get_mctrl,
642 .set_mctrl = bcm_uart_set_mctrl,
643 .start_tx = bcm_uart_start_tx,
644 .stop_tx = bcm_uart_stop_tx,
645 .stop_rx = bcm_uart_stop_rx,
646 .enable_ms = bcm_uart_enable_ms,
647 .break_ctl = bcm_uart_break_ctl,
648 .startup = bcm_uart_startup,
649 .shutdown = bcm_uart_shutdown,
650 .set_termios = bcm_uart_set_termios,
651 .type = bcm_uart_type,
652 .release_port = bcm_uart_release_port,
653 .request_port = bcm_uart_request_port,
654 .config_port = bcm_uart_config_port,
655 .verify_port = bcm_uart_verify_port,
656};
657
658
659
660#ifdef CONFIG_SERIAL_BCM63XX_CONSOLE
661static inline void wait_for_xmitr(struct uart_port *port)
662{
663 unsigned int tmout;
664
665 /* Wait up to 10ms for the character(s) to be sent. */
666 tmout = 10000;
667 while (--tmout) {
668 unsigned int val;
669
670 val = bcm_uart_readl(port, UART_IR_REG);
671 if (val & UART_IR_STAT(UART_IR_TXEMPTY))
672 break;
673 udelay(1);
674 }
675
676 /* Wait up to 1s for flow control if necessary */
677 if (port->flags & UPF_CONS_FLOW) {
678 tmout = 1000000;
679 while (--tmout) {
680 unsigned int val;
681
682 val = bcm_uart_readl(port, UART_EXTINP_REG);
683 if (val & UART_EXTINP_CTS_MASK)
684 break;
685 udelay(1);
686 }
687 }
688}
689
690/*
691 * output given char
692 */
693static void bcm_console_putchar(struct uart_port *port, int ch)
694{
695 wait_for_xmitr(port);
696 bcm_uart_writel(port, ch, UART_FIFO_REG);
697}
698
699/*
700 * console core request to output given string
701 */
702static void bcm_console_write(struct console *co, const char *s,
703 unsigned int count)
704{
705 struct uart_port *port;
706 unsigned long flags;
707 int locked;
708
709 port = &ports[co->index];
710
711 local_irq_save(flags);
712 if (port->sysrq) {
713 /* bcm_uart_interrupt() already took the lock */
714 locked = 0;
715 } else if (oops_in_progress) {
716 locked = spin_trylock(&port->lock);
717 } else {
718 spin_lock(&port->lock);
719 locked = 1;
720 }
721
722 /* call helper to deal with \r\n */
723 uart_console_write(port, s, count, bcm_console_putchar);
724
725 /* and wait for char to be transmitted */
726 wait_for_xmitr(port);
727
728 if (locked)
729 spin_unlock(&port->lock);
730 local_irq_restore(flags);
731}
732
733/*
734 * console core request to setup given console, find matching uart
735 * port and setup it.
736 */
737static int bcm_console_setup(struct console *co, char *options)
738{
739 struct uart_port *port;
740 int baud = 9600;
741 int bits = 8;
742 int parity = 'n';
743 int flow = 'n';
744
745 if (co->index < 0 || co->index >= BCM63XX_NR_UARTS)
746 return -EINVAL;
747 port = &ports[co->index];
748 if (!port->membase)
749 return -ENODEV;
750 if (options)
751 uart_parse_options(options, &baud, &parity, &bits, &flow);
752
753 return uart_set_options(port, co, baud, parity, bits, flow);
754}
755
756static struct uart_driver bcm_uart_driver;
757
758static struct console bcm63xx_console = {
759 .name = "ttyS",
760 .write = bcm_console_write,
761 .device = uart_console_device,
762 .setup = bcm_console_setup,
763 .flags = CON_PRINTBUFFER,
764 .index = -1,
765 .data = &bcm_uart_driver,
766};
767
768static int __init bcm63xx_console_init(void)
769{
770 register_console(&bcm63xx_console);
771 return 0;
772}
773
774console_initcall(bcm63xx_console_init);
775
776#define BCM63XX_CONSOLE (&bcm63xx_console)
777#else
778#define BCM63XX_CONSOLE NULL
779#endif /* CONFIG_SERIAL_BCM63XX_CONSOLE */
780
781static struct uart_driver bcm_uart_driver = {
782 .owner = THIS_MODULE,
783 .driver_name = "bcm63xx_uart",
784 .dev_name = "ttyS",
785 .major = TTY_MAJOR,
786 .minor = 64,
787 .nr = 1,
788 .cons = BCM63XX_CONSOLE,
789};
790
791/*
792 * platform driver probe/remove callback
793 */
794static int __devinit bcm_uart_probe(struct platform_device *pdev)
795{
796 struct resource *res_mem, *res_irq;
797 struct uart_port *port;
798 struct clk *clk;
799 int ret;
800
801 if (pdev->id < 0 || pdev->id >= BCM63XX_NR_UARTS)
802 return -EINVAL;
803
804 if (ports[pdev->id].membase)
805 return -EBUSY;
806
807 res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
808 if (!res_mem)
809 return -ENODEV;
810
811 res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
812 if (!res_irq)
813 return -ENODEV;
814
815 clk = clk_get(&pdev->dev, "periph");
816 if (IS_ERR(clk))
817 return -ENODEV;
818
819 port = &ports[pdev->id];
820 memset(port, 0, sizeof(*port));
821 port->iotype = UPIO_MEM;
822 port->mapbase = res_mem->start;
823 port->irq = res_irq->start;
824 port->ops = &bcm_uart_ops;
825 port->flags = UPF_BOOT_AUTOCONF;
826 port->dev = &pdev->dev;
827 port->fifosize = 16;
828 port->uartclk = clk_get_rate(clk) / 2;
829 clk_put(clk);
830
831 ret = uart_add_one_port(&bcm_uart_driver, port);
832 if (ret) {
833 kfree(port);
834 return ret;
835 }
836 platform_set_drvdata(pdev, port);
837 return 0;
838}
839
840static int __devexit bcm_uart_remove(struct platform_device *pdev)
841{
842 struct uart_port *port;
843
844 port = platform_get_drvdata(pdev);
845 uart_remove_one_port(&bcm_uart_driver, port);
846 platform_set_drvdata(pdev, NULL);
847 /* mark port as free */
848 ports[pdev->id].membase = 0;
849 return 0;
850}
851
852/*
853 * platform driver stuff
854 */
855static struct platform_driver bcm_uart_platform_driver = {
856 .probe = bcm_uart_probe,
857 .remove = __devexit_p(bcm_uart_remove),
858 .driver = {
859 .owner = THIS_MODULE,
860 .name = "bcm63xx_uart",
861 },
862};
863
864static int __init bcm_uart_init(void)
865{
866 int ret;
867
868 ret = uart_register_driver(&bcm_uart_driver);
869 if (ret)
870 return ret;
871
872 ret = platform_driver_register(&bcm_uart_platform_driver);
873 if (ret)
874 uart_unregister_driver(&bcm_uart_driver);
875
876 return ret;
877}
878
879static void __exit bcm_uart_exit(void)
880{
881 platform_driver_unregister(&bcm_uart_platform_driver);
882 uart_unregister_driver(&bcm_uart_driver);
883}
884
885module_init(bcm_uart_init);
886module_exit(bcm_uart_exit);
887
888MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
889MODULE_DESCRIPTION("Broadcom 63<xx integrated uart driver");
890MODULE_LICENSE("GPL");
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index fe661afe0713..db532ce288be 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -176,6 +176,9 @@
176/* Qualcomm MSM SoCs */ 176/* Qualcomm MSM SoCs */
177#define PORT_MSM 88 177#define PORT_MSM 88
178 178
179/* BCM63xx family SoCs */
180#define PORT_BCM63XX 89
181
179#ifdef __KERNEL__ 182#ifdef __KERNEL__
180 183
181#include <linux/compiler.h> 184#include <linux/compiler.h>
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-24 16:30:33 -0400