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-rw-r--r--arch/powerpc/platforms/cell/Makefile2
-rw-r--r--arch/powerpc/platforms/cell/pervasive.c229
-rw-r--r--arch/powerpc/platforms/cell/pervasive.h62
-rw-r--r--arch/powerpc/platforms/cell/setup.c2
-rw-r--r--arch/powerpc/platforms/pseries/ras.c5
-rw-r--r--arch/powerpc/platforms/pseries/ras.h9
-rw-r--r--arch/powerpc/platforms/pseries/setup.c4
7 files changed, 309 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/cell/Makefile b/arch/powerpc/platforms/cell/Makefile
index 74616cf13af..ebbd1141498 100644
--- a/arch/powerpc/platforms/cell/Makefile
+++ b/arch/powerpc/platforms/cell/Makefile
@@ -1,4 +1,6 @@
1obj-y += interrupt.o iommu.o setup.o spider-pic.o 1obj-y += interrupt.o iommu.o setup.o spider-pic.o
2obj-y += pervasive.o
3
2obj-$(CONFIG_SMP) += smp.o 4obj-$(CONFIG_SMP) += smp.o
3obj-$(CONFIG_SPU_FS) += spufs/ spu_base.o 5obj-$(CONFIG_SPU_FS) += spufs/ spu_base.o
4builtin-spufs-$(CONFIG_SPU_FS) += spu_syscalls.o 6builtin-spufs-$(CONFIG_SPU_FS) += spu_syscalls.o
diff --git a/arch/powerpc/platforms/cell/pervasive.c b/arch/powerpc/platforms/cell/pervasive.c
new file mode 100644
index 00000000000..85152544c15
--- /dev/null
+++ b/arch/powerpc/platforms/cell/pervasive.c
@@ -0,0 +1,229 @@
1/*
2 * CBE Pervasive Monitor and Debug
3 *
4 * (C) Copyright IBM Corporation 2005
5 *
6 * Authors: Maximino Aguilar (maguilar@us.ibm.com)
7 * Michael N. Day (mnday@us.ibm.com)
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2, or (at your option)
12 * any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24#undef DEBUG
25
26#include <linux/config.h>
27#include <linux/interrupt.h>
28#include <linux/irq.h>
29#include <linux/percpu.h>
30#include <linux/types.h>
31#include <linux/kallsyms.h>
32
33#include <asm/io.h>
34#include <asm/machdep.h>
35#include <asm/prom.h>
36#include <asm/pgtable.h>
37#include <asm/reg.h>
38
39#include "pervasive.h"
40
41static DEFINE_SPINLOCK(cbe_pervasive_lock);
42struct cbe_pervasive {
43 struct pmd_regs __iomem *regs;
44 unsigned int thread;
45};
46
47/* can't use per_cpu from setup_arch */
48static struct cbe_pervasive cbe_pervasive[NR_CPUS];
49
50static void __init cbe_enable_pause_zero(void)
51{
52 unsigned long thread_switch_control;
53 unsigned long temp_register;
54 struct cbe_pervasive *p;
55 int thread;
56
57 spin_lock_irq(&cbe_pervasive_lock);
58 p = &cbe_pervasive[smp_processor_id()];
59
60 if (!cbe_pervasive->regs)
61 goto out;
62
63 pr_debug("Power Management: CPU %d\n", smp_processor_id());
64
65 /* Enable Pause(0) control bit */
66 temp_register = in_be64(&p->regs->pm_control);
67
68 out_be64(&p->regs->pm_control,
69 temp_register|PMD_PAUSE_ZERO_CONTROL);
70
71 /* Enable DEC and EE interrupt request */
72 thread_switch_control = mfspr(SPRN_TSC_CELL);
73 thread_switch_control |= TSC_CELL_EE_ENABLE | TSC_CELL_EE_BOOST;
74
75 switch ((mfspr(SPRN_CTRLF) & CTRL_CT)) {
76 case CTRL_CT0:
77 thread_switch_control |= TSC_CELL_DEC_ENABLE_0;
78 thread = 0;
79 break;
80 case CTRL_CT1:
81 thread_switch_control |= TSC_CELL_DEC_ENABLE_1;
82 thread = 1;
83 break;
84 default:
85 printk(KERN_WARNING "%s: unknown configuration\n",
86 __FUNCTION__);
87 thread = -1;
88 break;
89 }
90
91 if (p->thread != thread)
92 printk(KERN_WARNING "%s: device tree inconsistant, "
93 "cpu %i: %d/%d\n", __FUNCTION__,
94 smp_processor_id(),
95 p->thread, thread);
96
97 mtspr(SPRN_TSC_CELL, thread_switch_control);
98
99out:
100 spin_unlock_irq(&cbe_pervasive_lock);
101}
102
103static void cbe_idle(void)
104{
105 unsigned long ctrl;
106
107 cbe_enable_pause_zero();
108
109 while (1) {
110 if (!need_resched()) {
111 local_irq_disable();
112 while (!need_resched()) {
113 /* go into low thread priority */
114 HMT_low();
115
116 /*
117 * atomically disable thread execution
118 * and runlatch.
119 * External and Decrementer exceptions
120 * are still handled when the thread
121 * is disabled but now enter in
122 * cbe_system_reset_exception()
123 */
124 ctrl = mfspr(SPRN_CTRLF);
125 ctrl &= ~(CTRL_RUNLATCH | CTRL_TE);
126 mtspr(SPRN_CTRLT, ctrl);
127 }
128 /* restore thread prio */
129 HMT_medium();
130 local_irq_enable();
131 }
132
133 /*
134 * turn runlatch on again before scheduling the
135 * process we just woke up
136 */
137 ppc64_runlatch_on();
138
139 preempt_enable_no_resched();
140 schedule();
141 preempt_disable();
142 }
143}
144
145int cbe_system_reset_exception(struct pt_regs *regs)
146{
147 switch (regs->msr & SRR1_WAKEMASK) {
148 case SRR1_WAKEEE:
149 do_IRQ(regs);
150 break;
151 case SRR1_WAKEDEC:
152 timer_interrupt(regs);
153 break;
154 case SRR1_WAKEMT:
155 /* no action required */
156 break;
157 default:
158 /* do system reset */
159 return 0;
160 }
161 /* everything handled */
162 return 1;
163}
164
165static int __init cbe_find_pmd_mmio(int cpu, struct cbe_pervasive *p)
166{
167 struct device_node *node;
168 unsigned int *int_servers;
169 char *addr;
170 unsigned long real_address;
171 unsigned int size;
172
173 struct pmd_regs __iomem *pmd_mmio_area;
174 int hardid, thread;
175 int proplen;
176
177 pmd_mmio_area = NULL;
178 hardid = get_hard_smp_processor_id(cpu);
179 for (node = NULL; (node = of_find_node_by_type(node, "cpu"));) {
180 int_servers = (void *) get_property(node,
181 "ibm,ppc-interrupt-server#s", &proplen);
182 if (!int_servers) {
183 printk(KERN_WARNING "%s misses "
184 "ibm,ppc-interrupt-server#s property",
185 node->full_name);
186 continue;
187 }
188 for (thread = 0; thread < proplen / sizeof (int); thread++) {
189 if (hardid == int_servers[thread]) {
190 addr = get_property(node, "pervasive", NULL);
191 goto found;
192 }
193 }
194 }
195
196 printk(KERN_WARNING "%s: CPU %d not found\n", __FUNCTION__, cpu);
197 return -EINVAL;
198
199found:
200 real_address = *(unsigned long*) addr;
201 addr += sizeof (unsigned long);
202 size = *(unsigned int*) addr;
203
204 pr_debug("pervasive area for CPU %d at %lx, size %x\n",
205 cpu, real_address, size);
206 p->regs = __ioremap(real_address, size, _PAGE_NO_CACHE);
207 p->thread = thread;
208 return 0;
209}
210
211void __init cell_pervasive_init(void)
212{
213 struct cbe_pervasive *p;
214 int cpu;
215 int ret;
216
217 if (!cpu_has_feature(CPU_FTR_PAUSE_ZERO))
218 return;
219
220 for_each_cpu(cpu) {
221 p = &cbe_pervasive[cpu];
222 ret = cbe_find_pmd_mmio(cpu, p);
223 if (ret)
224 return;
225 }
226
227 ppc_md.idle_loop = cbe_idle;
228 ppc_md.system_reset_exception = cbe_system_reset_exception;
229}
diff --git a/arch/powerpc/platforms/cell/pervasive.h b/arch/powerpc/platforms/cell/pervasive.h
new file mode 100644
index 00000000000..da1fb85ca3e
--- /dev/null
+++ b/arch/powerpc/platforms/cell/pervasive.h
@@ -0,0 +1,62 @@
1/*
2 * Cell Pervasive Monitor and Debug interface and HW structures
3 *
4 * (C) Copyright IBM Corporation 2005
5 *
6 * Authors: Maximino Aguilar (maguilar@us.ibm.com)
7 * David J. Erb (djerb@us.ibm.com)
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2, or (at your option)
12 * any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24
25#ifndef PERVASIVE_H
26#define PERVASIVE_H
27
28struct pmd_regs {
29 u8 pad_0x0000_0x0800[0x0800 - 0x0000]; /* 0x0000 */
30
31 /* Thermal Sensor Registers */
32 u64 ts_ctsr1; /* 0x0800 */
33 u64 ts_ctsr2; /* 0x0808 */
34 u64 ts_mtsr1; /* 0x0810 */
35 u64 ts_mtsr2; /* 0x0818 */
36 u64 ts_itr1; /* 0x0820 */
37 u64 ts_itr2; /* 0x0828 */
38 u64 ts_gitr; /* 0x0830 */
39 u64 ts_isr; /* 0x0838 */
40 u64 ts_imr; /* 0x0840 */
41 u64 tm_cr1; /* 0x0848 */
42 u64 tm_cr2; /* 0x0850 */
43 u64 tm_simr; /* 0x0858 */
44 u64 tm_tpr; /* 0x0860 */
45 u64 tm_str1; /* 0x0868 */
46 u64 tm_str2; /* 0x0870 */
47 u64 tm_tsr; /* 0x0878 */
48
49 /* Power Management */
50 u64 pm_control; /* 0x0880 */
51#define PMD_PAUSE_ZERO_CONTROL 0x10000
52 u64 pm_status; /* 0x0888 */
53
54 /* Time Base Register */
55 u64 tbr; /* 0x0890 */
56
57 u8 pad_0x0898_0x1000 [0x1000 - 0x0898]; /* 0x0898 */
58};
59
60void __init cell_pervasive_init(void);
61
62#endif
diff --git a/arch/powerpc/platforms/cell/setup.c b/arch/powerpc/platforms/cell/setup.c
index e5ee42b6750..18e25e65c04 100644
--- a/arch/powerpc/platforms/cell/setup.c
+++ b/arch/powerpc/platforms/cell/setup.c
@@ -49,6 +49,7 @@
49 49
50#include "interrupt.h" 50#include "interrupt.h"
51#include "iommu.h" 51#include "iommu.h"
52#include "pervasive.h"
52 53
53#ifdef DEBUG 54#ifdef DEBUG
54#define DBG(fmt...) udbg_printf(fmt) 55#define DBG(fmt...) udbg_printf(fmt)
@@ -165,6 +166,7 @@ static void __init cell_setup_arch(void)
165 init_pci_config_tokens(); 166 init_pci_config_tokens();
166 find_and_init_phbs(); 167 find_and_init_phbs();
167 spider_init_IRQ(); 168 spider_init_IRQ();
169 cell_pervasive_init();
168#ifdef CONFIG_DUMMY_CONSOLE 170#ifdef CONFIG_DUMMY_CONSOLE
169 conswitchp = &dummy_con; 171 conswitchp = &dummy_con;
170#endif 172#endif
diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c
index 49b305f9c15..b046bcf7443 100644
--- a/arch/powerpc/platforms/pseries/ras.c
+++ b/arch/powerpc/platforms/pseries/ras.c
@@ -51,6 +51,8 @@
51#include <asm/udbg.h> 51#include <asm/udbg.h>
52#include <asm/firmware.h> 52#include <asm/firmware.h>
53 53
54#include "ras.h"
55
54static unsigned char ras_log_buf[RTAS_ERROR_LOG_MAX]; 56static unsigned char ras_log_buf[RTAS_ERROR_LOG_MAX];
55static DEFINE_SPINLOCK(ras_log_buf_lock); 57static DEFINE_SPINLOCK(ras_log_buf_lock);
56 58
@@ -278,7 +280,7 @@ static void fwnmi_release_errinfo(void)
278 printk("FWNMI: nmi-interlock failed: %d\n", ret); 280 printk("FWNMI: nmi-interlock failed: %d\n", ret);
279} 281}
280 282
281void pSeries_system_reset_exception(struct pt_regs *regs) 283int pSeries_system_reset_exception(struct pt_regs *regs)
282{ 284{
283 if (fwnmi_active) { 285 if (fwnmi_active) {
284 struct rtas_error_log *errhdr = fwnmi_get_errinfo(regs); 286 struct rtas_error_log *errhdr = fwnmi_get_errinfo(regs);
@@ -287,6 +289,7 @@ void pSeries_system_reset_exception(struct pt_regs *regs)
287 } 289 }
288 fwnmi_release_errinfo(); 290 fwnmi_release_errinfo();
289 } 291 }
292 return 0; /* need to perform reset */
290} 293}
291 294
292/* 295/*
diff --git a/arch/powerpc/platforms/pseries/ras.h b/arch/powerpc/platforms/pseries/ras.h
new file mode 100644
index 00000000000..0e66b0da55e
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/ras.h
@@ -0,0 +1,9 @@
1#ifndef _PSERIES_RAS_H
2#define _PSERIES_RAS_H
3
4struct pt_regs;
5
6extern int pSeries_system_reset_exception(struct pt_regs *regs);
7extern int pSeries_machine_check_exception(struct pt_regs *regs);
8
9#endif /* _PSERIES_RAS_H */
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 38b631ceaec..8903cf63236 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -69,6 +69,7 @@
69#include <asm/smp.h> 69#include <asm/smp.h>
70 70
71#include "plpar_wrappers.h" 71#include "plpar_wrappers.h"
72#include "ras.h"
72 73
73#ifdef DEBUG 74#ifdef DEBUG
74#define DBG(fmt...) udbg_printf(fmt) 75#define DBG(fmt...) udbg_printf(fmt)
@@ -80,9 +81,6 @@ extern void find_udbg_vterm(void);
80 81
81int fwnmi_active; /* TRUE if an FWNMI handler is present */ 82int fwnmi_active; /* TRUE if an FWNMI handler is present */
82 83
83extern void pSeries_system_reset_exception(struct pt_regs *regs);
84extern int pSeries_machine_check_exception(struct pt_regs *regs);
85
86static void pseries_shared_idle(void); 84static void pseries_shared_idle(void);
87static void pseries_dedicated_idle(void); 85static void pseries_dedicated_idle(void);
88 86
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-20 21:31:35 -0400