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-rw-r--r--arch/powerpc/configs/cell_defconfig1
-rw-r--r--arch/powerpc/kernel/head_64.S29
-rw-r--r--arch/powerpc/kernel/prom.c43
-rw-r--r--arch/powerpc/platforms/cell/Kconfig4
-rw-r--r--arch/powerpc/platforms/cell/Makefile3
-rw-r--r--arch/powerpc/platforms/cell/cbe_regs.c128
-rw-r--r--arch/powerpc/platforms/cell/cbe_regs.h129
-rw-r--r--arch/powerpc/platforms/cell/interrupt.c37
-rw-r--r--arch/powerpc/platforms/cell/pervasive.c104
-rw-r--r--arch/powerpc/platforms/cell/pervasive.h37
-rw-r--r--arch/powerpc/platforms/cell/ras.c112
-rw-r--r--arch/powerpc/platforms/cell/ras.h9
-rw-r--r--arch/powerpc/platforms/cell/setup.c10
-rw-r--r--include/asm-powerpc/prom.h3
-rw-r--r--include/asm-powerpc/reg.h2
15 files changed, 505 insertions, 146 deletions
diff --git a/arch/powerpc/configs/cell_defconfig b/arch/powerpc/configs/cell_defconfig
index dbe421dc3c11..5b8599d03f16 100644
--- a/arch/powerpc/configs/cell_defconfig
+++ b/arch/powerpc/configs/cell_defconfig
@@ -133,6 +133,7 @@ CONFIG_CELL_IIC=y
#
CONFIG_SPU_FS=m
CONFIG_SPUFS_MMAP=y
+CONFIG_CBE_RAS=y
#
# Kernel options
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index b7d140430a41..831acbdf2592 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -316,6 +316,21 @@ label##_pSeries: \
mtspr SPRN_SPRG1,r13; /* save r13 */ \
EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common)
+#define HSTD_EXCEPTION_PSERIES(n, label) \
+ . = n; \
+ .globl label##_pSeries; \
+label##_pSeries: \
+ HMT_MEDIUM; \
+ mtspr SPRN_SPRG1,r20; /* save r20 */ \
+ mfspr r20,SPRN_HSRR0; /* copy HSRR0 to SRR0 */ \
+ mtspr SPRN_SRR0,r20; \
+ mfspr r20,SPRN_HSRR1; /* copy HSRR0 to SRR0 */ \
+ mtspr SPRN_SRR1,r20; \
+ mfspr r20,SPRN_SPRG1; /* restore r20 */ \
+ mtspr SPRN_SPRG1,r13; /* save r13 */ \
+ EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common)
+
+
#define STD_EXCEPTION_ISERIES(n, label, area) \
.globl label##_iSeries; \
label##_iSeries: \
@@ -544,8 +559,17 @@ system_call_pSeries:
STD_EXCEPTION_PSERIES(0xf20, altivec_unavailable)
+#ifdef CONFIG_CBE_RAS
+ HSTD_EXCEPTION_PSERIES(0x1200, cbe_system_error)
+#endif /* CONFIG_CBE_RAS */
STD_EXCEPTION_PSERIES(0x1300, instruction_breakpoint)
+#ifdef CONFIG_CBE_RAS
+ HSTD_EXCEPTION_PSERIES(0x1600, cbe_maintenance)
+#endif /* CONFIG_CBE_RAS */
STD_EXCEPTION_PSERIES(0x1700, altivec_assist)
+#ifdef CONFIG_CBE_RAS
+ HSTD_EXCEPTION_PSERIES(0x1800, cbe_thermal)
+#endif /* CONFIG_CBE_RAS */
. = 0x3000
@@ -827,6 +851,11 @@ machine_check_common:
#else
STD_EXCEPTION_COMMON(0x1700, altivec_assist, .unknown_exception)
#endif
+#ifdef CONFIG_CBE_RAS
+ STD_EXCEPTION_COMMON(0x1200, cbe_system_error, .cbe_system_error_exception)
+ STD_EXCEPTION_COMMON(0x1600, cbe_maintenance, .cbe_maintenance_exception)
+ STD_EXCEPTION_COMMON(0x1800, cbe_thermal, .cbe_thermal_exception)
+#endif /* CONFIG_CBE_RAS */
/*
* Here we have detected that the kernel stack pointer is bad.
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 629023240ece..483455c5bb02 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -2105,3 +2105,46 @@ int prom_update_property(struct device_node *np,
return 0;
}
+
+/* Find the device node for a given logical cpu number, also returns the cpu
+ * local thread number (index in ibm,interrupt-server#s) if relevant and
+ * asked for (non NULL)
+ */
+struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
+{
+ int hardid;
+ struct device_node *np;
+
+ hardid = get_hard_smp_processor_id(cpu);
+
+ for_each_node_by_type(np, "cpu") {
+ u32 *intserv;
+ unsigned int plen, t;
+
+ /* Check for ibm,ppc-interrupt-server#s. If it doesn't exist
+ * fallback to "reg" property and assume no threads
+ */
+ intserv = (u32 *)get_property(np, "ibm,ppc-interrupt-server#s",
+ &plen);
+ if (intserv == NULL) {
+ u32 *reg = (u32 *)get_property(np, "reg", NULL);
+ if (reg == NULL)
+ continue;
+ if (*reg == hardid) {
+ if (thread)
+ *thread = 0;
+ return np;
+ }
+ } else {
+ plen /= sizeof(u32);
+ for (t = 0; t < plen; t++) {
+ if (hardid == intserv[t]) {
+ if (thread)
+ *thread = t;
+ return np;
+ }
+ }
+ }
+ }
+ return NULL;
+}
diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig
index 6a02d51086c8..00b83db2ce73 100644
--- a/arch/powerpc/platforms/cell/Kconfig
+++ b/arch/powerpc/platforms/cell/Kconfig
@@ -16,4 +16,8 @@ config SPUFS_MMAP
select MEMORY_HOTPLUG
default y
+config CBE_RAS
+ bool "RAS features for bare metal Cell BE"
+ default y
+
endmenu
diff --git a/arch/powerpc/platforms/cell/Makefile b/arch/powerpc/platforms/cell/Makefile
index e570bad06394..6b11f6adca08 100644
--- a/arch/powerpc/platforms/cell/Makefile
+++ b/arch/powerpc/platforms/cell/Makefile
@@ -1,5 +1,6 @@
obj-y += interrupt.o iommu.o setup.o spider-pic.o
-obj-y += pervasive.o
+obj-y += cbe_regs.o pervasive.o
+obj-$(CONFIG_CBE_RAS) += ras.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_SPU_FS) += spu-base.o spufs/
diff --git a/arch/powerpc/platforms/cell/cbe_regs.c b/arch/powerpc/platforms/cell/cbe_regs.c
new file mode 100644
index 000000000000..2dfde61c8412
--- /dev/null
+++ b/arch/powerpc/platforms/cell/cbe_regs.c
@@ -0,0 +1,128 @@
+/*
+ * cbe_regs.c
+ *
+ * Accessor routines for the various MMIO register blocks of the CBE
+ *
+ * (c) 2006 Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp.
+ */
+
+
+#include <linux/config.h>
+#include <linux/percpu.h>
+#include <linux/types.h>
+
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/prom.h>
+#include <asm/ptrace.h>
+
+#include "cbe_regs.h"
+
+#define MAX_CBE 2
+
+/*
+ * Current implementation uses "cpu" nodes. We build our own mapping
+ * array of cpu numbers to cpu nodes locally for now to allow interrupt
+ * time code to have a fast path rather than call of_get_cpu_node(). If
+ * we implement cpu hotplug, we'll have to install an appropriate norifier
+ * in order to release references to the cpu going away
+ */
+static struct cbe_regs_map
+{
+ struct device_node *cpu_node;
+ struct cbe_pmd_regs __iomem *pmd_regs;
+ struct cbe_iic_regs __iomem *iic_regs;
+} cbe_regs_maps[MAX_CBE];
+static int cbe_regs_map_count;
+
+static struct cbe_thread_map
+{
+ struct device_node *cpu_node;
+ struct cbe_regs_map *regs;
+} cbe_thread_map[NR_CPUS];
+
+static struct cbe_regs_map *cbe_find_map(struct device_node *np)
+{
+ int i;
+
+ for (i = 0; i < cbe_regs_map_count; i++)
+ if (cbe_regs_maps[i].cpu_node == np)
+ return &cbe_regs_maps[i];
+ return NULL;
+}
+
+struct cbe_pmd_regs __iomem *cbe_get_pmd_regs(struct device_node *np)
+{
+ struct cbe_regs_map *map = cbe_find_map(np);
+ if (map == NULL)
+ return NULL;
+ return map->pmd_regs;
+}
+
+struct cbe_pmd_regs __iomem *cbe_get_cpu_pmd_regs(int cpu)
+{
+ struct cbe_regs_map *map = cbe_thread_map[cpu].regs;
+ if (map == NULL)
+ return NULL;
+ return map->pmd_regs;
+}
+
+
+struct cbe_iic_regs __iomem *cbe_get_iic_regs(struct device_node *np)
+{
+ struct cbe_regs_map *map = cbe_find_map(np);
+ if (map == NULL)
+ return NULL;
+ return map->iic_regs;
+}
+struct cbe_iic_regs __iomem *cbe_get_cpu_iic_regs(int cpu)
+{
+ struct cbe_regs_map *map = cbe_thread_map[cpu].regs;
+ if (map == NULL)
+ return NULL;
+ return map->iic_regs;
+}
+
+void __init cbe_regs_init(void)
+{
+ int i;
+ struct device_node *cpu;
+
+ /* Build local fast map of CPUs */
+ for_each_cpu(i)
+ cbe_thread_map[i].cpu_node = of_get_cpu_node(i, NULL);
+
+ /* Find maps for each device tree CPU */
+ for_each_node_by_type(cpu, "cpu") {
+ struct cbe_regs_map *map = &cbe_regs_maps[cbe_regs_map_count++];
+
+ /* That hack must die die die ! */
+ struct address_prop {
+ unsigned long address;
+ unsigned int len;
+ } __attribute__((packed)) *prop;
+
+
+ if (cbe_regs_map_count > MAX_CBE) {
+ printk(KERN_ERR "cbe_regs: More BE chips than supported"
+ "!\n");
+ cbe_regs_map_count--;
+ return;
+ }
+ map->cpu_node = cpu;
+ for_each_cpu(i)
+ if (cbe_thread_map[i].cpu_node == cpu)
+ cbe_thread_map[i].regs = map;
+
+ prop = (struct address_prop *)get_property(cpu, "pervasive",
+ NULL);
+ if (prop != NULL)
+ map->pmd_regs = ioremap(prop->address, prop->len);
+
+ prop = (struct address_prop *)get_property(cpu, "iic",
+ NULL);
+ if (prop != NULL)
+ map->iic_regs = ioremap(prop->address, prop->len);
+ }
+}
+
diff --git a/arch/powerpc/platforms/cell/cbe_regs.h b/arch/powerpc/platforms/cell/cbe_regs.h
new file mode 100644
index 000000000000..e76e4a6af5bc
--- /dev/null
+++ b/arch/powerpc/platforms/cell/cbe_regs.h
@@ -0,0 +1,129 @@
+/*
+ * cbe_regs.h
+ *
+ * This file is intended to hold the various register definitions for CBE
+ * on-chip system devices (memory controller, IO controller, etc...)
+ *
+ * (c) 2006 Benjamin Herrenschmidt <benh@kernel.crashing.org>, IBM Corp.
+ */
+
+#ifndef CBE_REGS_H
+#define CBE_REGS_H
+
+/*
+ *
+ * Some HID register definitions
+ *
+ */
+
+/* CBE specific HID0 bits */
+#define HID0_CBE_THERM_WAKEUP 0x0000020000000000ul
+#define HID0_CBE_SYSERR_WAKEUP 0x0000008000000000ul
+#define HID0_CBE_THERM_INT_EN 0x0000000400000000ul
+#define HID0_CBE_SYSERR_INT_EN 0x0000000200000000ul
+
+
+/*
+ *
+ * Pervasive unit register definitions
+ *
+ */
+
+struct cbe_pmd_regs {
+ u8 pad_0x0000_0x0800[0x0800 - 0x0000]; /* 0x0000 */
+
+ /* Thermal Sensor Registers */
+ u64 ts_ctsr1; /* 0x0800 */
+ u64 ts_ctsr2; /* 0x0808 */
+ u64 ts_mtsr1; /* 0x0810 */
+ u64 ts_mtsr2; /* 0x0818 */
+ u64 ts_itr1; /* 0x0820 */
+ u64 ts_itr2; /* 0x0828 */
+ u64 ts_gitr; /* 0x0830 */
+ u64 ts_isr; /* 0x0838 */
+ u64 ts_imr; /* 0x0840 */
+ u64 tm_cr1; /* 0x0848 */
+ u64 tm_cr2; /* 0x0850 */
+ u64 tm_simr; /* 0x0858 */
+ u64 tm_tpr; /* 0x0860 */
+ u64 tm_str1; /* 0x0868 */
+ u64 tm_str2; /* 0x0870 */
+ u64 tm_tsr; /* 0x0878 */
+
+ /* Power Management */
+ u64 pm_control; /* 0x0880 */
+#define CBE_PMD_PAUSE_ZERO_CONTROL 0x10000
+ u64 pm_status; /* 0x0888 */
+
+ /* Time Base Register */
+ u64 tbr; /* 0x0890 */
+
+ u8 pad_0x0898_0x0c00 [0x0c00 - 0x0898]; /* 0x0898 */
+
+ /* Fault Isolation Registers */
+ u64 checkstop_fir; /* 0x0c00 */
+ u64 recoverable_fir;
+ u64 spec_att_mchk_fir;
+ u64 fir_mode_reg;
+ u64 fir_enable_mask;
+
+ u8 pad_0x0c28_0x1000 [0x1000 - 0x0c28]; /* 0x0c28 */
+};
+
+extern struct cbe_pmd_regs __iomem *cbe_get_pmd_regs(struct device_node *np);
+extern struct cbe_pmd_regs __iomem *cbe_get_cpu_pmd_regs(int cpu);
+
+/*
+ *
+ * IIC unit register definitions
+ *
+ */
+
+struct cbe_iic_pending_bits {
+ u32 data;
+ u8 flags;
+ u8 class;
+ u8 source;
+ u8 prio;
+};
+
+#define CBE_IIC_IRQ_VALID 0x80
+#define CBE_IIC_IRQ_IPI 0x40
+
+struct cbe_iic_thread_regs {
+ struct cbe_iic_pending_bits pending;
+ struct cbe_iic_pending_bits pending_destr;
+ u64 generate;
+ u64 prio;
+};
+
+struct cbe_iic_regs {
+ u8 pad_0x0000_0x0400[0x0400 - 0x0000]; /* 0x0000 */
+
+ /* IIC interrupt registers */
+ struct cbe_iic_thread_regs thread[2]; /* 0x0400 */
+ u64 iic_ir; /* 0x0440 */
+ u64 iic_is; /* 0x0448 */
+
+ u8 pad_0x0450_0x0500[0x0500 - 0x0450]; /* 0x0450 */
+
+ /* IOC FIR */
+ u64 ioc_fir_reset; /* 0x0500 */
+ u64 ioc_fir_set;
+ u64 ioc_checkstop_enable;
+ u64 ioc_fir_error_mask;
+ u64 ioc_syserr_enable;
+ u64 ioc_fir;
+
+ u8 pad_0x0530_0x1000[0x1000 - 0x0530]; /* 0x0530 */
+};
+
+extern struct cbe_iic_regs __iomem *cbe_get_iic_regs(struct device_node *np);
+extern struct cbe_iic_regs __iomem *cbe_get_cpu_iic_regs(int cpu);
+
+
+/* Init this module early */
+extern void cbe_regs_init(void);
+
+
+#endif /* CBE_REGS_H */
diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c
index 978be1c30c1b..0a707bcabef6 100644
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -33,29 +33,10 @@
#include <asm/ptrace.h>
#include "interrupt.h"
-
-struct iic_pending_bits {
- u32 data;
- u8 flags;
- u8 class;
- u8 source;
- u8 prio;
-};
-
-enum iic_pending_flags {
- IIC_VALID = 0x80,
- IIC_IPI = 0x40,
-};
-
-struct iic_regs {
- struct iic_pending_bits pending;
- struct iic_pending_bits pending_destr;
- u64 generate;
- u64 prio;
-};
+#include "cbe_regs.h"
struct iic {
- struct iic_regs __iomem *regs;
+ struct cbe_iic_thread_regs __iomem *regs;
u8 target_id;
};
@@ -115,7 +96,7 @@ static struct hw_interrupt_type iic_pic = {
.end = iic_end,
};
-static int iic_external_get_irq(struct iic_pending_bits pending)
+static int iic_external_get_irq(struct cbe_iic_pending_bits pending)
{
int irq;
unsigned char node, unit;
@@ -168,15 +149,15 @@ int iic_get_irq(struct pt_regs *regs)
{
struct iic *iic;
int irq;
- struct iic_pending_bits pending;
+ struct cbe_iic_pending_bits pending;
iic = &__get_cpu_var(iic);
*(unsigned long *) &pending =
in_be64((unsigned long __iomem *) &iic->regs->pending_destr);
irq = -1;
- if (pending.flags & IIC_VALID) {
- if (pending.flags & IIC_IPI) {
+ if (pending.flags & CBE_IIC_IRQ_VALID) {
+ if (pending.flags & CBE_IIC_IRQ_IPI) {
irq = IIC_IPI_OFFSET + (pending.prio >> 4);
/*
if (irq > 0x80)
@@ -226,7 +207,7 @@ static int setup_iic_hardcoded(void)
regs += 0x20;
printk(KERN_INFO "IIC for CPU %d at %lx\n", cpu, regs);
- iic->regs = ioremap(regs, sizeof(struct iic_regs));
+ iic->regs = ioremap(regs, sizeof(struct cbe_iic_thread_regs));
iic->target_id = (nodeid << 4) + ((cpu & 1) ? 0xf : 0xe);
}
@@ -267,12 +248,12 @@ static int setup_iic(void)
}
iic = &per_cpu(iic, np[0]);
- iic->regs = ioremap(regs[0], sizeof(struct iic_regs));
+ iic->regs = ioremap(regs[0], sizeof(struct cbe_iic_thread_regs));
iic->target_id = ((np[0] & 2) << 3) + ((np[0] & 1) ? 0xf : 0xe);
printk("IIC for CPU %d at %lx mapped to %p\n", np[0], regs[0], iic->regs);
iic = &per_cpu(iic, np[1]);
- iic->regs = ioremap(regs[2], sizeof(struct iic_regs));
+ iic->regs = ioremap(regs[2], sizeof(struct cbe_iic_thread_regs));
iic->target_id = ((np[1] & 2) << 3) + ((np[1] & 1) ? 0xf : 0xe);
printk("IIC for CPU %d at %lx mapped to %p\n", np[1], regs[2], iic->regs);
diff --git a/arch/powerpc/platforms/cell/pervasive.c b/arch/powerpc/platforms/cell/pervasive.c
index 7eed8c624517..695ac4e1617e 100644
--- a/arch/powerpc/platforms/cell/pervasive.c
+++ b/arch/powerpc/platforms/cell/pervasive.c
@@ -37,36 +37,28 @@
#include <asm/reg.h>
#include "pervasive.h"
+#include "cbe_regs.h"
static DEFINE_SPINLOCK(cbe_pervasive_lock);
-struct cbe_pervasive {
- struct pmd_regs __iomem *regs;
- unsigned int thread;
-};
-
-/* can't use per_cpu from setup_arch */
-static struct cbe_pervasive cbe_pervasive[NR_CPUS];
static void __init cbe_enable_pause_zero(void)
{
unsigned long thread_switch_control;
unsigned long temp_register;
- struct cbe_pervasive *p;
- int thread;
+ struct cbe_pmd_regs __iomem *pregs;
spin_lock_irq(&cbe_pervasive_lock);
- p = &cbe_pervasive[smp_processor_id()];
-
- if (!cbe_pervasive->regs)
+ pregs = cbe_get_cpu_pmd_regs(smp_processor_id());
+ if (pregs == NULL)
goto out;
pr_debug("Power Management: CPU %d\n", smp_processor_id());
/* Enable Pause(0) control bit */
- temp_register = in_be64(&p->regs->pm_control);
+ temp_register = in_be64(&pregs->pm_control);
- out_be64(&p->regs->pm_control,
- temp_register|PMD_PAUSE_ZERO_CONTROL);
+ out_be64(&pregs->pm_control,
+ temp_register | CBE_PMD_PAUSE_ZERO_CONTROL);
/* Enable DEC and EE interrupt request */
thread_switch_control = mfspr(SPRN_TSC_CELL);
@@ -75,25 +67,16 @@ static void __init cbe_enable_pause_zero(void)
switch ((mfspr(SPRN_CTRLF) & CTRL_CT)) {
case CTRL_CT0:
thread_switch_control |= TSC_CELL_DEC_ENABLE_0;
- thread = 0;
break;
case CTRL_CT1:
thread_switch_control |= TSC_CELL_DEC_ENABLE_1;
- thread = 1;
break;
default:
printk(KERN_WARNING "%s: unknown configuration\n",
__FUNCTION__);
- thread = -1;
break;
}
- if (p->thread != thread)
- printk(KERN_WARNING "%s: device tree inconsistant, "
- "cpu %i: %d/%d\n", __FUNCTION__,
- smp_processor_id(),
- p->thread, thread);
-
mtspr(SPRN_TSC_CELL, thread_switch_control);
out:
@@ -104,6 +87,11 @@ static void cbe_idle(void)
{
unsigned long ctrl;
+ /* Why do we do that on every idle ? Couldn't that be done once for
+ * all or do we lose the state some way ? Also, the pm_control
+ * register setting, that can't be set once at boot ? We really want
+ * to move that away in order to implement a simple powersave
+ */
cbe_enable_pause_zero();
while (1) {
@@ -152,8 +140,15 @@ static int cbe_system_reset_exception(struct pt_regs *regs)
timer_interrupt(regs);
break;
case SRR1_WAKEMT:
- /* no action required */
break;
+#ifdef CONFIG_CBE_RAS
+ case SRR1_WAKESYSERR:
+ cbe_system_error_exception(regs);
+ break;
+ case SRR1_WAKETHERM:
+ cbe_thermal_exception(regs);
+ break;
+#endif /* CONFIG_CBE_RAS */
default:
/* do system reset */
return 0;
@@ -162,68 +157,11 @@ static int cbe_system_reset_exception(struct pt_regs *regs)
return 1;
}
-static int __init cbe_find_pmd_mmio(int cpu, struct cbe_pervasive *p)
-{
- struct device_node *node;
- unsigned int *int_servers;
- char *addr;
- unsigned long real_address;
- unsigned int size;
-
- struct pmd_regs __iomem *pmd_mmio_area;
- int hardid, thread;
- int proplen;
-
- pmd_mmio_area = NULL;
- hardid = get_hard_smp_processor_id(cpu);
- for (node = NULL; (node = of_find_node_by_type(node, "cpu"));) {
- int_servers = (void *) get_property(node,
- "ibm,ppc-interrupt-server#s", &proplen);
- if (!int_servers) {
- printk(KERN_WARNING "%s misses "
- "ibm,ppc-interrupt-server#s property",
- node->full_name);
- continue;
- }
- for (thread = 0; thread < proplen / sizeof (int); thread++) {
- if (hardid == int_servers[thread]) {
- addr = get_property(node, "pervasive", NULL);
- goto found;
- }
- }
- }
-
- printk(KERN_WARNING "%s: CPU %d not found\n", __FUNCTION__, cpu);
- return -EINVAL;
-
-found:
- real_address = *(unsigned long*) addr;
- addr += sizeof (unsigned long);
- size = *(unsigned int*) addr;
-
- pr_debug("pervasive area for CPU %d at %lx, size %x\n",
- cpu, real_address, size);
- p->regs = ioremap(real_address, size);
- p->thread = thread;
- return 0;
-}
-
-void __init cell_pervasive_init(void)
+void __init cbe_pervasive_init(void)
{
- struct cbe_pervasive *p;
- int cpu;
- int ret;
-
if (!cpu_has_feature(CPU_FTR_PAUSE_ZERO))
return;
- for_each_possible_cpu(cpu) {
- p = &cbe_pervasive[cpu];
- ret = cbe_find_pmd_mmio(cpu, p);
- if (ret)
- return;
- }
-
ppc_md.idle_loop = cbe_idle;
ppc_md.system_reset_exception = cbe_system_reset_exception;
}
diff --git a/arch/powerpc/platforms/cell/pervasive.h b/arch/powerpc/platforms/cell/pervasive.h
index da1fb85ca3e8..7b50947f8044 100644
--- a/arch/powerpc/platforms/cell/pervasive.h
+++ b/arch/powerpc/platforms/cell/pervasive.h
@@ -25,38 +25,9 @@
#ifndef PERVASIVE_H
#define PERVASIVE_H
-struct pmd_regs {
- u8 pad_0x0000_0x0800[0x0800 - 0x0000]; /* 0x0000 */
-
- /* Thermal Sensor Registers */
- u64 ts_ctsr1; /* 0x0800 */
- u64 ts_ctsr2; /* 0x0808 */
- u64 ts_mtsr1; /* 0x0810 */
- u64 ts_mtsr2; /* 0x0818 */
- u64 ts_itr1; /* 0x0820 */
- u64 ts_itr2; /* 0x0828 */
- u64 ts_gitr; /* 0x0830 */
- u64 ts_isr; /* 0x0838 */
- u64 ts_imr; /* 0x0840 */
- u64 tm_cr1; /* 0x0848 */
- u64 tm_cr2; /* 0x0850 */
- u64 tm_simr; /* 0x0858 */
- u64 tm_tpr; /* 0x0860 */
- u64 tm_str1; /* 0x0868 */
- u64 tm_str2; /* 0x0870 */
- u64 tm_tsr; /* 0x0878 */
-
- /* Power Management */
- u64 pm_control; /* 0x0880 */
-#define PMD_PAUSE_ZERO_CONTROL 0x10000
- u64 pm_status; /* 0x0888 */
-
- /* Time Base Register */
- u64 tbr; /* 0x0890 */
-
- u8 pad_0x0898_0x1000 [0x1000 - 0x0898]; /* 0x0898 */
-};
-
-void __init cell_pervasive_init(void);
+extern void cbe_pervasive_init(void);
+extern void cbe_system_error_exception(struct pt_regs *regs);
+extern void cbe_maintenance_exception(struct pt_regs *regs);
+extern void cbe_thermal_exception(struct pt_regs *regs);
#endif
diff --git a/arch/powerpc/platforms/cell/ras.c b/arch/powerpc/platforms/cell/ras.c
new file mode 100644
index 000000000000..033ad6e2827b
--- /dev/null
+++ b/arch/powerpc/platforms/cell/ras.c
@@ -0,0 +1,112 @@
+#define DEBUG
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/smp.h>
+
+#include <asm/reg.h>
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+
+#include "ras.h"
+#include "cbe_regs.h"
+
+
+static void dump_fir(int cpu)
+{
+ struct cbe_pmd_regs __iomem *pregs = cbe_get_cpu_pmd_regs(cpu);
+ struct cbe_iic_regs __iomem *iregs = cbe_get_cpu_iic_regs(cpu);
+
+ if (pregs == NULL)
+ return;
+
+ /* Todo: do some nicer parsing of bits and based on them go down
+ * to other sub-units FIRs and not only IIC
+ */
+ printk(KERN_ERR "Global Checkstop FIR : 0x%016lx\n",
+ in_be64(&pregs->checkstop_fir));
+ printk(KERN_ERR "Global Recoverable FIR : 0x%016lx\n",
+ in_be64(&pregs->checkstop_fir));
+ printk(KERN_ERR "Global MachineCheck FIR : 0x%016lx\n",
+ in_be64(&pregs->spec_att_mchk_fir));
+
+ if (iregs == NULL)
+ return;
+ printk(KERN_ERR "IOC FIR : 0x%016lx\n",
+ in_be64(&iregs->ioc_fir));
+
+}
+
+void cbe_system_error_exception(struct pt_regs *regs)
+{
+ int cpu = smp_processor_id();
+
+ printk(KERN_ERR "System Error Interrupt on CPU %d !\n", cpu);
+ dump_fir(cpu);
+ dump_stack();
+}
+
+void cbe_maintenance_exception(struct pt_regs *regs)
+{
+ int cpu = smp_processor_id();
+
+ /*
+ * Nothing implemented for the maintenance interrupt at this point
+ */
+
+ printk(KERN_ERR "Unhandled Maintenance interrupt on CPU %d !\n", cpu);
+ dump_stack();
+}
+
+void cbe_thermal_exception(struct pt_regs *regs)
+{
+ int cpu = smp_processor_id();
+
+ /*
+ * Nothing implemented for the thermal interrupt at this point
+ */
+
+ printk(KERN_ERR "Unhandled Thermal interrupt on CPU %d !\n", cpu);
+ dump_stack();
+}
+
+static int cbe_machine_check_handler(struct pt_regs *regs)
+{
+ int cpu = smp_processor_id();
+
+ printk(KERN_ERR "Machine Check Interrupt on CPU %d !\n", cpu);
+ dump_fir(cpu);
+
+ /* No recovery from this code now, lets continue */
+ return 0;
+}
+
+void __init cbe_ras_init(void)
+{
+ unsigned long hid0;
+
+ /*
+ * Enable System Error & thermal interrupts and wakeup conditions
+ */
+
+ hid0 = mfspr(SPRN_HID0);
+ hid0 |= HID0_CBE_THERM_INT_EN | HID0_CBE_THERM_WAKEUP |
+ HID0_CBE_SYSERR_INT_EN | HID0_CBE_SYSERR_WAKEUP;
+ mtspr(SPRN_HID0, hid0);
+ mb();
+
+ /*
+ * Install machine check handler. Leave setting of precise mode to
+ * what the firmware did for now
+ */
+ ppc_md.machine_check_exception = cbe_machine_check_handler;
+ mb();
+
+ /*
+ * For now, we assume that IOC_FIR is already set to forward some
+ * error conditions to the System Error handler. If that is not true
+ * then it will have to be fixed up here.
+ */
+}
diff --git a/arch/powerpc/platforms/cell/ras.h b/arch/powerpc/platforms/cell/ras.h
new file mode 100644
index 000000000000..eb7ee54c82a0
--- /dev/null
+++ b/arch/powerpc/platforms/cell/ras.h
@@ -0,0 +1,9 @@
+#ifndef RAS_H
+#define RAS_H
+
+extern void cbe_system_error_exception(struct pt_regs *regs);
+extern void cbe_maintenance_exception(struct pt_regs *regs);
+extern void cbe_thermal_exception(struct pt_regs *regs);
+extern void cbe_ras_init(void);
+
+#endif /* RAS_H */
diff --git a/arch/powerpc/platforms/cell/setup.c b/arch/powerpc/platforms/cell/setup.c
index fd3e5609e3e0..eb8ab9bbf744 100644
--- a/arch/powerpc/platforms/cell/setup.c
+++ b/arch/powerpc/platforms/cell/setup.c
@@ -52,7 +52,9 @@
#include "interrupt.h"
#include "iommu.h"
+#include "cbe_regs.h"
#include "pervasive.h"
+#include "ras.h"
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
@@ -82,6 +84,12 @@ static void __init cell_setup_arch(void)
ppc_md.init_IRQ = iic_init_IRQ;
ppc_md.get_irq = iic_get_irq;
+ cbe_regs_init();
+
+#ifdef CONFIG_CBE_RAS
+ cbe_ras_init();
+#endif
+
#ifdef CONFIG_SMP
smp_init_cell();
#endif
@@ -98,7 +106,7 @@ static void __init cell_setup_arch(void)
init_pci_config_tokens();
find_and_init_phbs();
spider_init_IRQ();
- cell_pervasive_init();
+ cbe_pervasive_init();
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#endif
diff --git a/include/asm-powerpc/prom.h b/include/asm-powerpc/prom.h
index c79d58ab7441..8bdcd5178302 100644
--- a/include/asm-powerpc/prom.h
+++ b/include/asm-powerpc/prom.h
@@ -238,5 +238,8 @@ void of_parse_dma_window(struct device_node *dn, unsigned char *dma_window_prop,
extern void kdump_move_device_tree(void);
+/* CPU OF node matching */
+struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
+
#endif /* __KERNEL__ */
#endif /* _POWERPC_PROM_H */
diff --git a/include/asm-powerpc/reg.h b/include/asm-powerpc/reg.h
index f2ed7577aa35..cf73475a0c69 100644
--- a/include/asm-powerpc/reg.h
+++ b/include/asm-powerpc/reg.h
@@ -386,6 +386,8 @@
#define SRR1_WAKEMT 0x00280000 /* mtctrl */
#define SRR1_WAKEDEC 0x00180000 /* Decrementer interrupt */
#define SRR1_WAKETHERM 0x00100000 /* Thermal management interrupt */
+#define SPRN_HSRR0 0x13A /* Save/Restore Register 0 */
+#define SPRN_HSRR1 0x13B /* Save/Restore Register 1 */
#ifndef SPRN_SVR
#define SPRN_SVR 0x11E /* System Version Register */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 21:22:06 +0100