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-rw-r--r--arch/powerpc/kernel/entry_64.S3
-rw-r--r--arch/powerpc/kernel/firmware.c2
-rw-r--r--arch/powerpc/kernel/head_fsl_booke.S4
-rw-r--r--arch/powerpc/kernel/irq.c140
-rw-r--r--arch/powerpc/kernel/kgdb.c2
-rw-r--r--arch/powerpc/kernel/kprobes.c4
-rw-r--r--arch/powerpc/kernel/lparcfg.c10
-rw-r--r--arch/powerpc/kernel/nvram_64.c6
-rw-r--r--arch/powerpc/kernel/of_platform.c2
-rw-r--r--arch/powerpc/kernel/pci-common.c24
-rw-r--r--arch/powerpc/kernel/pci_64.c2
-rw-r--r--arch/powerpc/kernel/pci_of_scan.c2
-rw-r--r--arch/powerpc/kernel/perf_callchain.c3
-rw-r--r--arch/powerpc/kernel/perf_event.c10
-rw-r--r--arch/powerpc/kernel/pmc.c10
-rw-r--r--arch/powerpc/kernel/process.c116
-rw-r--r--arch/powerpc/kernel/prom.c887
-rw-r--r--arch/powerpc/kernel/prom_init.c81
-rw-r--r--arch/powerpc/kernel/ptrace.c516
-rw-r--r--arch/powerpc/kernel/signal.c6
-rw-r--r--arch/powerpc/kernel/signal_32.c16
-rw-r--r--arch/powerpc/kernel/time.c10
-rw-r--r--arch/powerpc/kernel/traps.c128
23 files changed, 956 insertions, 1028 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index bdcb557d470..07109d84378 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -791,9 +791,8 @@ _GLOBAL(enter_rtas)
li r9,1
rldicr r9,r9,MSR_SF_LG,(63-MSR_SF_LG)
- ori r9,r9,MSR_IR|MSR_DR|MSR_FE0|MSR_FE1|MSR_FP
+ ori r9,r9,MSR_IR|MSR_DR|MSR_FE0|MSR_FE1|MSR_FP|MSR_RI
andc r6,r0,r9
- ori r6,r6,MSR_RI
sync /* disable interrupts so SRR0/1 */
mtmsrd r0 /* don't get trashed */
diff --git a/arch/powerpc/kernel/firmware.c b/arch/powerpc/kernel/firmware.c
index 1679a70bbca..6b1f4271eb5 100644
--- a/arch/powerpc/kernel/firmware.c
+++ b/arch/powerpc/kernel/firmware.c
@@ -17,5 +17,5 @@
#include <asm/firmware.h>
-unsigned long powerpc_firmware_features;
+unsigned long powerpc_firmware_features __read_mostly;
EXPORT_SYMBOL_GPL(powerpc_firmware_features);
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 7f4bd7f3b6a..25793bb0e78 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -214,11 +214,11 @@ skpinv: addi r6,r6,1 /* Increment */
bl 1f /* Find our address */
1: mflr r9
rlwimi r7,r9,0,20,31
- addi r7,r7,24
+ addi r7,r7,(2f - 1b)
mtspr SPRN_SRR0,r7
mtspr SPRN_SRR1,r6
rfi
-
+2:
/* 4. Clear out PIDs & Search info */
li r6,0
mtspr SPRN_MAS6,r6
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 9040330b053..64f6f2031c2 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -73,8 +73,10 @@
#define CREATE_TRACE_POINTS
#include <asm/trace.h>
+DEFINE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
+EXPORT_PER_CPU_SYMBOL(irq_stat);
+
int __irq_offset_value;
-static int ppc_spurious_interrupts;
#ifdef CONFIG_PPC32
EXPORT_SYMBOL(__irq_offset_value);
@@ -180,30 +182,64 @@ notrace void raw_local_irq_restore(unsigned long en)
EXPORT_SYMBOL(raw_local_irq_restore);
#endif /* CONFIG_PPC64 */
+static int show_other_interrupts(struct seq_file *p, int prec)
+{
+ int j;
+
+#if defined(CONFIG_PPC32) && defined(CONFIG_TAU_INT)
+ if (tau_initialized) {
+ seq_printf(p, "%*s: ", prec, "TAU");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", tau_interrupts(j));
+ seq_puts(p, " PowerPC Thermal Assist (cpu temp)\n");
+ }
+#endif /* CONFIG_PPC32 && CONFIG_TAU_INT */
+
+ seq_printf(p, "%*s: ", prec, "LOC");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", per_cpu(irq_stat, j).timer_irqs);
+ seq_printf(p, " Local timer interrupts\n");
+
+ seq_printf(p, "%*s: ", prec, "SPU");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", per_cpu(irq_stat, j).spurious_irqs);
+ seq_printf(p, " Spurious interrupts\n");
+
+ seq_printf(p, "%*s: ", prec, "CNT");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", per_cpu(irq_stat, j).pmu_irqs);
+ seq_printf(p, " Performance monitoring interrupts\n");
+
+ seq_printf(p, "%*s: ", prec, "MCE");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ", per_cpu(irq_stat, j).mce_exceptions);
+ seq_printf(p, " Machine check exceptions\n");
+
+ return 0;
+}
+
int show_interrupts(struct seq_file *p, void *v)
{
- int i = *(loff_t *)v, j;
+ unsigned long flags, any_count = 0;
+ int i = *(loff_t *) v, j, prec;
struct irqaction *action;
struct irq_desc *desc;
- unsigned long flags;
+ if (i > nr_irqs)
+ return 0;
+
+ for (prec = 3, j = 1000; prec < 10 && j <= nr_irqs; ++prec)
+ j *= 10;
+
+ if (i == nr_irqs)
+ return show_other_interrupts(p, prec);
+
+ /* print header */
if (i == 0) {
- seq_puts(p, " ");
+ seq_printf(p, "%*s", prec + 8, "");
for_each_online_cpu(j)
- seq_printf(p, "CPU%d ", j);
+ seq_printf(p, "CPU%-8d", j);
seq_putc(p, '\n');
- } else if (i == nr_irqs) {
-#if defined(CONFIG_PPC32) && defined(CONFIG_TAU_INT)
- if (tau_initialized){
- seq_puts(p, "TAU: ");
- for_each_online_cpu(j)
- seq_printf(p, "%10u ", tau_interrupts(j));
- seq_puts(p, " PowerPC Thermal Assist (cpu temp)\n");
- }
-#endif /* CONFIG_PPC32 && CONFIG_TAU_INT*/
- seq_printf(p, "BAD: %10u\n", ppc_spurious_interrupts);
-
- return 0;
}
desc = irq_to_desc(i);
@@ -211,37 +247,48 @@ int show_interrupts(struct seq_file *p, void *v)
return 0;
raw_spin_lock_irqsave(&desc->lock, flags);
-
+ for_each_online_cpu(j)
+ any_count |= kstat_irqs_cpu(i, j);
action = desc->action;
- if (!action || !action->handler)
- goto skip;
+ if (!action && !any_count)
+ goto out;
- seq_printf(p, "%3d: ", i);
-#ifdef CONFIG_SMP
+ seq_printf(p, "%*d: ", prec, i);
for_each_online_cpu(j)
seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
-#else
- seq_printf(p, "%10u ", kstat_irqs(i));
-#endif /* CONFIG_SMP */
if (desc->chip)
- seq_printf(p, " %s ", desc->chip->name);
+ seq_printf(p, " %-16s", desc->chip->name);
else
- seq_puts(p, " None ");
+ seq_printf(p, " %-16s", "None");
+ seq_printf(p, " %-8s", (desc->status & IRQ_LEVEL) ? "Level" : "Edge");
- seq_printf(p, "%s", (desc->status & IRQ_LEVEL) ? "Level " : "Edge ");
- seq_printf(p, " %s", action->name);
+ if (action) {
+ seq_printf(p, " %s", action->name);
+ while ((action = action->next) != NULL)
+ seq_printf(p, ", %s", action->name);
+ }
- for (action = action->next; action; action = action->next)
- seq_printf(p, ", %s", action->name);
seq_putc(p, '\n');
-
-skip:
+out:
raw_spin_unlock_irqrestore(&desc->lock, flags);
-
return 0;
}
+/*
+ * /proc/stat helpers
+ */
+u64 arch_irq_stat_cpu(unsigned int cpu)
+{
+ u64 sum = per_cpu(irq_stat, cpu).timer_irqs;
+
+ sum += per_cpu(irq_stat, cpu).pmu_irqs;
+ sum += per_cpu(irq_stat, cpu).mce_exceptions;
+ sum += per_cpu(irq_stat, cpu).spurious_irqs;
+
+ return sum;
+}
+
#ifdef CONFIG_HOTPLUG_CPU
void fixup_irqs(cpumask_t map)
{
@@ -353,8 +400,7 @@ void do_IRQ(struct pt_regs *regs)
if (irq != NO_IRQ && irq != NO_IRQ_IGNORE)
handle_one_irq(irq);
else if (irq != NO_IRQ_IGNORE)
- /* That's not SMP safe ... but who cares ? */
- ppc_spurious_interrupts++;
+ __get_cpu_var(irq_stat).spurious_irqs++;
irq_exit();
set_irq_regs(old_regs);
@@ -474,7 +520,7 @@ void do_softirq(void)
*/
static LIST_HEAD(irq_hosts);
-static DEFINE_SPINLOCK(irq_big_lock);
+static DEFINE_RAW_SPINLOCK(irq_big_lock);
static unsigned int revmap_trees_allocated;
static DEFINE_MUTEX(revmap_trees_mutex);
struct irq_map_entry irq_map[NR_IRQS];
@@ -520,14 +566,14 @@ struct irq_host *irq_alloc_host(struct device_node *of_node,
if (host->ops->match == NULL)
host->ops->match = default_irq_host_match;
- spin_lock_irqsave(&irq_big_lock, flags);
+ raw_spin_lock_irqsave(&irq_big_lock, flags);
/* If it's a legacy controller, check for duplicates and
* mark it as allocated (we use irq 0 host pointer for that
*/
if (revmap_type == IRQ_HOST_MAP_LEGACY) {
if (irq_map[0].host != NULL) {
- spin_unlock_irqrestore(&irq_big_lock, flags);
+ raw_spin_unlock_irqrestore(&irq_big_lock, flags);
/* If we are early boot, we can't free the structure,
* too bad...
* this will be fixed once slab is made available early
@@ -541,7 +587,7 @@ struct irq_host *irq_alloc_host(struct device_node *of_node,
}
list_add(&host->link, &irq_hosts);
- spin_unlock_irqrestore(&irq_big_lock, flags);
+ raw_spin_unlock_irqrestore(&irq_big_lock, flags);
/* Additional setups per revmap type */
switch(revmap_type) {
@@ -592,13 +638,13 @@ struct irq_host *irq_find_host(struct device_node *node)
* the absence of a device node. This isn't a problem so far
* yet though...
*/
- spin_lock_irqsave(&irq_big_lock, flags);
+ raw_spin_lock_irqsave(&irq_big_lock, flags);
list_for_each_entry(h, &irq_hosts, link)
if (h->ops->match(h, node)) {
found = h;
break;
}
- spin_unlock_irqrestore(&irq_big_lock, flags);
+ raw_spin_unlock_irqrestore(&irq_big_lock, flags);
return found;
}
EXPORT_SYMBOL_GPL(irq_find_host);
@@ -967,7 +1013,7 @@ unsigned int irq_alloc_virt(struct irq_host *host,
if (count == 0 || count > (irq_virq_count - NUM_ISA_INTERRUPTS))
return NO_IRQ;
- spin_lock_irqsave(&irq_big_lock, flags);
+ raw_spin_lock_irqsave(&irq_big_lock, flags);
/* Use hint for 1 interrupt if any */
if (count == 1 && hint >= NUM_ISA_INTERRUPTS &&
@@ -991,7 +1037,7 @@ unsigned int irq_alloc_virt(struct irq_host *host,
}
}
if (found == NO_IRQ) {
- spin_unlock_irqrestore(&irq_big_lock, flags);
+ raw_spin_unlock_irqrestore(&irq_big_lock, flags);
return NO_IRQ;
}
hint_found:
@@ -1000,7 +1046,7 @@ unsigned int irq_alloc_virt(struct irq_host *host,
smp_wmb();
irq_map[i].host = host;
}
- spin_unlock_irqrestore(&irq_big_lock, flags);
+ raw_spin_unlock_irqrestore(&irq_big_lock, flags);
return found;
}
@@ -1012,7 +1058,7 @@ void irq_free_virt(unsigned int virq, unsigned int count)
WARN_ON (virq < NUM_ISA_INTERRUPTS);
WARN_ON (count == 0 || (virq + count) > irq_virq_count);
- spin_lock_irqsave(&irq_big_lock, flags);
+ raw_spin_lock_irqsave(&irq_big_lock, flags);
for (i = virq; i < (virq + count); i++) {
struct irq_host *host;
@@ -1025,7 +1071,7 @@ void irq_free_virt(unsigned int virq, unsigned int count)
smp_wmb();
irq_map[i].host = NULL;
}
- spin_unlock_irqrestore(&irq_big_lock, flags);
+ raw_spin_unlock_irqrestore(&irq_big_lock, flags);
}
int arch_early_irq_init(void)
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index b6bd1eaa1c2..41bada0298c 100644
--- a/arch/powerpc/kernel/kgdb.c
+++ b/arch/powerpc/kernel/kgdb.c
@@ -333,7 +333,7 @@ int kgdb_arch_handle_exception(int vector, int signo, int err_code,
atomic_set(&kgdb_cpu_doing_single_step, -1);
/* set the trace bit if we're stepping */
if (remcom_in_buffer[0] == 's') {
-#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
mtspr(SPRN_DBCR0,
mfspr(SPRN_DBCR0) | DBCR0_IC | DBCR0_IDM);
linux_regs->msr |= MSR_DE;
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index c9329786073..3fd1af90211 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -36,7 +36,7 @@
#include <asm/uaccess.h>
#include <asm/system.h>
-#ifdef CONFIG_BOOKE
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
#define MSR_SINGLESTEP (MSR_DE)
#else
#define MSR_SINGLESTEP (MSR_SE)
@@ -110,7 +110,7 @@ static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
* like Decrementer or External Interrupt */
regs->msr &= ~MSR_EE;
regs->msr |= MSR_SINGLESTEP;
-#ifdef CONFIG_BOOKE
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
regs->msr &= ~MSR_CE;
mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) | DBCR0_IC | DBCR0_IDM);
#endif
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 79a00bb9c64..d09d1c61515 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -359,7 +359,7 @@ static void parse_system_parameter_string(struct seq_file *m)
unsigned char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
if (!local_buffer) {
- printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
+ printk(KERN_ERR "%s %s kmalloc failure at line %d\n",
__FILE__, __func__, __LINE__);
return;
}
@@ -383,13 +383,13 @@ static void parse_system_parameter_string(struct seq_file *m)
int idx, w_idx;
char *workbuffer = kzalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
if (!workbuffer) {
- printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
+ printk(KERN_ERR "%s %s kmalloc failure at line %d\n",
__FILE__, __func__, __LINE__);
kfree(local_buffer);
return;
}
#ifdef LPARCFG_DEBUG
- printk(KERN_INFO "success calling get-system-parameter \n");
+ printk(KERN_INFO "success calling get-system-parameter\n");
#endif
splpar_strlen = local_buffer[0] * 256 + local_buffer[1];
local_buffer += 2; /* step over strlen value */
@@ -440,7 +440,7 @@ static int lparcfg_count_active_processors(void)
while ((cpus_dn = of_find_node_by_type(cpus_dn, "cpu"))) {
#ifdef LPARCFG_DEBUG
- printk(KERN_ERR "cpus_dn %p \n", cpus_dn);
+ printk(KERN_ERR "cpus_dn %p\n", cpus_dn);
#endif
count++;
}
@@ -725,7 +725,7 @@ static int lparcfg_data(struct seq_file *m, void *v)
const unsigned int *lp_index_ptr;
unsigned int lp_index = 0;
- seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
+ seq_printf(m, "%s %s\n", MODULE_NAME, MODULE_VERS);
rootdn = of_find_node_by_path("/");
if (rootdn) {
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index ad461e735ae..9cf197f01e9 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -338,8 +338,8 @@ static int __init nvram_create_os_partition(void)
rc = nvram_write_header(new_part);
if (rc <= 0) {
- printk(KERN_ERR "nvram_create_os_partition: nvram_write_header \
- failed (%d)\n", rc);
+ printk(KERN_ERR "nvram_create_os_partition: nvram_write_header "
+ "failed (%d)\n", rc);
return rc;
}
@@ -349,7 +349,7 @@ static int __init nvram_create_os_partition(void)
rc = ppc_md.nvram_write((char *)&seq_init, sizeof(seq_init), &tmp_index);
if (rc <= 0) {
printk(KERN_ERR "nvram_create_os_partition: nvram_write "
- "failed (%d)\n", rc);
+ "failed (%d)\n", rc);
return rc;
}
diff --git a/arch/powerpc/kernel/of_platform.c b/arch/powerpc/kernel/of_platform.c
index 1a4fc0d11a0..666d08db319 100644
--- a/arch/powerpc/kernel/of_platform.c
+++ b/arch/powerpc/kernel/of_platform.c
@@ -214,7 +214,7 @@ EXPORT_SYMBOL(of_find_device_by_node);
static int of_dev_phandle_match(struct device *dev, void *data)
{
phandle *ph = data;
- return to_of_device(dev)->node->linux_phandle == *ph;
+ return to_of_device(dev)->node->phandle == *ph;
}
struct of_device *of_find_device_by_phandle(phandle ph)
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index cadbed679fb..2597f9545d8 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1047,10 +1047,8 @@ static void __devinit pcibios_fixup_bridge(struct pci_bus *bus)
struct pci_dev *dev = bus->self;
- for (i = 0; i < PCI_BUS_NUM_RESOURCES; ++i) {
- if ((res = bus->resource[i]) == NULL)
- continue;
- if (!res->flags)
+ pci_bus_for_each_resource(bus, res, i) {
+ if (!res || !res->flags)
continue;
if (i >= 3 && bus->self->transparent)
continue;
@@ -1181,21 +1179,20 @@ static int skip_isa_ioresource_align(struct pci_dev *dev)
* but we want to try to avoid allocating at 0x2900-0x2bff
* which might have be mirrored at 0x0100-0x03ff..
*/
-void pcibios_align_resource(void *data, struct resource *res,
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
resource_size_t size, resource_size_t align)
{
struct pci_dev *dev = data;
+ resource_size_t start = res->start;
if (res->flags & IORESOURCE_IO) {
- resource_size_t start = res->start;
-
if (skip_isa_ioresource_align(dev))
- return;
- if (start & 0x300) {
+ return start;
+ if (start & 0x300)
start = (start + 0x3ff) & ~0x3ff;
- res->start = start;
- }
}
+
+ return start;
}
EXPORT_SYMBOL(pcibios_align_resource);
@@ -1278,9 +1275,8 @@ void pcibios_allocate_bus_resources(struct pci_bus *bus)
pr_debug("PCI: Allocating bus resources for %04x:%02x...\n",
pci_domain_nr(bus), bus->number);
- for (i = 0; i < PCI_BUS_NUM_RESOURCES; ++i) {
- if ((res = bus->resource[i]) == NULL || !res->flags
- || res->start > res->end || res->parent)
+ pci_bus_for_each_resource(bus, res, i) {
+ if (!res || !res->flags || res->start > res->end || res->parent)
continue;
if (bus->parent == NULL)
pr = (res->flags & IORESOURCE_IO) ?
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index ccf56ac92de..d43fc65749c 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -224,7 +224,7 @@ long sys_pciconfig_iobase(long which, unsigned long in_bus,
* G5 machines... So when something asks for bus 0 io base
* (bus 0 is HT root), we return the AGP one instead.
*/
- if (in_bus == 0 && machine_is_compatible("MacRISC4")) {
+ if (in_bus == 0 && of_machine_is_compatible("MacRISC4")) {
struct device_node *agp;
agp = of_find_compatible_node(NULL, NULL, "u3-agp");
diff --git a/arch/powerpc/kernel/pci_of_scan.c b/arch/powerpc/kernel/pci_of_scan.c
index 4aa17401657..cd11d5ca80d 100644
--- a/arch/powerpc/kernel/pci_of_scan.c
+++ b/arch/powerpc/kernel/pci_of_scan.c
@@ -304,7 +304,7 @@ static void __devinit __of_scan_bus(struct device_node *node,
int reglen, devfn;
struct pci_dev *dev;
- pr_debug("of_scan_bus(%s) bus no %d... \n",
+ pr_debug("of_scan_bus(%s) bus no %d...\n",
node->full_name, bus->number);
/* Scan direct children */
diff --git a/arch/powerpc/kernel/perf_callchain.c b/arch/powerpc/kernel/perf_callchain.c
index a3c11cac3d7..95ad9dad298 100644
--- a/arch/powerpc/kernel/perf_callchain.c
+++ b/arch/powerpc/kernel/perf_callchain.c
@@ -495,9 +495,6 @@ struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
entry->nr = 0;
- if (current->pid == 0) /* idle task? */
- return entry;
-
if (!user_mode(regs)) {
perf_callchain_kernel(regs, entry);
if (current->mm)
diff --git a/arch/powerpc/kernel/perf_event.c b/arch/powerpc/kernel/perf_event.c
index 1eb85fbf53a..b6cf8f1f4d3 100644
--- a/arch/powerpc/kernel/perf_event.c
+++ b/arch/powerpc/kernel/perf_event.c
@@ -718,10 +718,10 @@ static int collect_events(struct perf_event *group, int max_count,
return n;
}
-static void event_sched_in(struct perf_event *event, int cpu)
+static void event_sched_in(struct perf_event *event)
{
event->state = PERF_EVENT_STATE_ACTIVE;
- event->oncpu = cpu;
+ event->oncpu = smp_processor_id();
event->tstamp_running += event->ctx->time - event->tstamp_stopped;
if (is_software_event(event))
event->pmu->enable(event);
@@ -735,7 +735,7 @@ static void event_sched_in(struct perf_event *event, int cpu)
*/
int hw_perf_group_sched_in(struct perf_event *group_leader,
struct perf_cpu_context *cpuctx,
- struct perf_event_context *ctx, int cpu)
+ struct perf_event_context *ctx)
{
struct cpu_hw_events *cpuhw;
long i, n, n0;
@@ -766,10 +766,10 @@ int hw_perf_group_sched_in(struct perf_event *group_leader,
cpuhw->event[i]->hw.config = cpuhw->events[i];
cpuctx->active_oncpu += n;
n = 1;
- event_sched_in(group_leader, cpu);
+ event_sched_in(group_leader);
list_for_each_entry(sub, &group_leader->sibling_list, group_entry) {
if (sub->state != PERF_EVENT_STATE_OFF) {
- event_sched_in(sub, cpu);
+ event_sched_in(sub);
++n;
}
}
diff --git a/arch/powerpc/kernel/pmc.c b/arch/powerpc/kernel/pmc.c
index 0516e2d3e02..461499b43cf 100644
--- a/arch/powerpc/kernel/pmc.c
+++ b/arch/powerpc/kernel/pmc.c
@@ -37,7 +37,7 @@ static void dummy_perf(struct pt_regs *regs)
}
-static DEFINE_SPINLOCK(pmc_owner_lock);
+static DEFINE_RAW_SPINLOCK(pmc_owner_lock);
static void *pmc_owner_caller; /* mostly for debugging */
perf_irq_t perf_irq = dummy_perf;
@@ -45,7 +45,7 @@ int reserve_pmc_hardware(perf_irq_t new_perf_irq)
{
int err = 0;
- spin_lock(&pmc_owner_lock);
+ raw_spin_lock(&pmc_owner_lock);
if (pmc_owner_caller) {
printk(KERN_WARNING "reserve_pmc_hardware: "
@@ -59,21 +59,21 @@ int reserve_pmc_hardware(perf_irq_t new_perf_irq)
perf_irq = new_perf_irq ? new_perf_irq : dummy_perf;
out:
- spin_unlock(&pmc_owner_lock);
+ raw_spin_unlock(&pmc_owner_lock);
return err;
}
EXPORT_SYMBOL_GPL(reserve_pmc_hardware);
void release_pmc_hardware(void)
{
- spin_lock(&pmc_owner_lock);
+ raw_spin_lock(&pmc_owner_lock);
WARN_ON(! pmc_owner_caller);
pmc_owner_caller = NULL;
perf_irq = dummy_perf;
- spin_unlock(&pmc_owner_lock);
+ raw_spin_unlock(&pmc_owner_lock);
}
EXPORT_SYMBOL_GPL(release_pmc_hardware);
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 7b816daf3eb..e4d71ced97e 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -245,6 +245,24 @@ void discard_lazy_cpu_state(void)
}
#endif /* CONFIG_SMP */
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+void do_send_trap(struct pt_regs *regs, unsigned long address,
+ unsigned long error_code, int signal_code, int breakpt)
+{
+ siginfo_t info;
+
+ if (notify_die(DIE_DABR_MATCH, "dabr_match", regs, error_code,
+ 11, SIGSEGV) == NOTIFY_STOP)
+ return;
+
+ /* Deliver the signal to userspace */
+ info.si_signo = SIGTRAP;
+ info.si_errno = breakpt; /* breakpoint or watchpoint id */
+ info.si_code = signal_code;
+ info.si_addr = (void __user *)address;
+ force_sig_info(SIGTRAP, &info, current);
+}
+#else /* !CONFIG_PPC_ADV_DEBUG_REGS */
void do_dabr(struct pt_regs *regs, unsigned long address,
unsigned long error_code)
{
@@ -257,12 +275,6 @@ void do_dabr(struct pt_regs *regs, unsigned long address,
if (debugger_dabr_match(regs))
return;
- /* Clear the DAC and struct entries. One shot trigger */
-#if defined(CONFIG_BOOKE)
- mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) & ~(DBSR_DAC1R | DBSR_DAC1W
- | DBCR0_IDM));
-#endif
-
/* Clear the DABR */
set_dabr(0);
@@ -273,9 +285,82 @@ void do_dabr(struct pt_regs *regs, unsigned long address,
info.si_addr = (void __user *)address;
force_sig_info(SIGTRAP, &info, current);
}
+#endif /* CONFIG_PPC_ADV_DEBUG_REGS */
static DEFINE_PER_CPU(unsigned long, current_dabr);
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+/*
+ * Set the debug registers back to their default "safe" values.
+ */
+static void set_debug_reg_defaults(struct thread_struct *thread)
+{
+ thread->iac1 = thread->iac2 = 0;
+#if CONFIG_PPC_ADV_DEBUG_IACS > 2
+ thread->iac3 = thread->iac4 = 0;
+#endif
+ thread->dac1 = thread->dac2 = 0;
+#if CONFIG_PPC_ADV_DEBUG_DVCS > 0
+ thread->dvc1 = thread->dvc2 = 0;
+#endif
+ thread->dbcr0 = 0;
+#ifdef CONFIG_BOOKE
+ /*
+ * Force User/Supervisor bits to b11 (user-only MSR[PR]=1)
+ */
+ thread->dbcr1 = DBCR1_IAC1US | DBCR1_IAC2US | \
+ DBCR1_IAC3US | DBCR1_IAC4US;
+ /*
+ * Force Data Address Compare User/Supervisor bits to be User-only
+ * (0b11 MSR[PR]=1) and set all other bits in DBCR2 register to be 0.
+ */
+ thread->dbcr2 = DBCR2_DAC1US | DBCR2_DAC2US;
+#else
+ thread->dbcr1 = 0;
+#endif
+}
+
+static void prime_debug_regs(struct thread_struct *thread)
+{
+ mtspr(SPRN_IAC1, thread->iac1);
+ mtspr(SPRN_IAC2, thread->iac2);
+#if CONFIG_PPC_ADV_DEBUG_IACS > 2
+ mtspr(SPRN_IAC3, thread->iac3);
+ mtspr(SPRN_IAC4, thread->iac4);
+#endif
+ mtspr(SPRN_DAC1, thread->dac1);
+ mtspr(SPRN_DAC2, thread->dac2);
+#if CONFIG_PPC_ADV_DEBUG_DVCS > 0
+ mtspr(SPRN_DVC1, thread->dvc1);
+ mtspr(SPRN_DVC2, thread->dvc2);
+#endif
+ mtspr(SPRN_DBCR0, thread->dbcr0);
+ mtspr(SPRN_DBCR1, thread->dbcr1);
+#ifdef CONFIG_BOOKE
+ mtspr(SPRN_DBCR2, thread->dbcr2);
+#endif
+}
+/*
+ * Unless neither the old or new thread are making use of the
+ * debug registers, set the debug registers from the values
+ * stored in the new thread.
+ */
+static void switch_booke_debug_regs(struct thread_struct *new_thread)
+{
+ if ((current->thread.dbcr0 & DBCR0_IDM)
+ || (new_thread->dbcr0 & DBCR0_IDM))
+ prime_debug_regs(new_thread);
+}
+#else /* !CONFIG_PPC_ADV_DEBUG_REGS */
+static void set_debug_reg_defaults(struct thread_struct *thread)
+{
+ if (thread->dabr) {
+ thread->dabr = 0;
+ set_dabr(0);
+ }
+}
+#endif /* CONFIG_PPC_ADV_DEBUG_REGS */
+
int set_dabr(unsigned long dabr)
{
__get_cpu_var(current_dabr) = dabr;
@@ -284,7 +369,7 @@ int set_dabr(unsigned long dabr)
return ppc_md.set_dabr(dabr);
/* XXX should we have a CPU_FTR_HAS_DABR ? */
-#if defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
mtspr(SPRN_DAC1, dabr);
#elif defined(CONFIG_PPC_BOOK3S)
mtspr(SPRN_DABR, dabr);
@@ -371,10 +456,8 @@ struct task_struct *__switch_to(struct task_struct *prev,
#endif /* CONFIG_SMP */
-#if defined(CONFIG_BOOKE)
- /* If new thread DAC (HW breakpoint) is the same then leave it */
- if (new->thread.dabr)
- set_dabr(new->thread.dabr);
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+ switch_booke_debug_regs(&new->thread);
#else
if (unlikely(__get_cpu_var(current_dabr) != new->thread.dabr))
set_dabr(new->thread.dabr);
@@ -514,7 +597,7 @@ void show_regs(struct pt_regs * regs)
printk(" CR: %08lx XER: %08lx\n", regs->ccr, regs->xer);
trap = TRAP(regs);
if (trap == 0x300 || trap == 0x600)
-#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
printk("DEAR: "REG", ESR: "REG"\n", regs->dar, regs->dsisr);
#else
printk("DAR: "REG", DSISR: "REG"\n", regs->dar, regs->dsisr);
@@ -556,14 +639,7 @@ void flush_thread(void)
{
discard_lazy_cpu_state();
- if (current->thread.dabr) {
- current->thread.dabr = 0;
- set_dabr(0);
-
-#if defined(CONFIG_BOOKE)
- current->thread.dbcr0 &= ~(DBSR_DAC1R | DBSR_DAC1W);
-#endif
- }
+ set_debug_reg_defaults(&current->thread);
}
void
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 4ec30086246..43238b2054b 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -61,365 +61,12 @@
#define DBG(fmt...)
#endif
-
-static int __initdata dt_root_addr_cells;
-static int __initdata dt_root_size_cells;
-
#ifdef CONFIG_PPC64
int __initdata iommu_is_off;
int __initdata iommu_force_on;
unsigned long tce_alloc_start, tce_alloc_end;
#endif
-typedef u32 cell_t;
-
-#if 0
-static struct boot_param_header *initial_boot_params __initdata;
-#else
-struct boot_param_header *initial_boot_params;
-#endif
-
-extern struct device_node *allnodes; /* temporary while merging */
-
-extern rwlock_t devtree_lock; /* temporary while merging */
-
-/* export that to outside world */
-struct device_node *of_chosen;
-
-static inline char *find_flat_dt_string(u32 offset)
-{
- return ((char *)initial_boot_params) +
- initial_boot_params->off_dt_strings + offset;
-}
-
-/**
- * This function is used to scan the flattened device-tree, it is
- * used to extract the memory informations at boot before we can
- * unflatten the tree
- */
-int __init of_scan_flat_dt(int (*it)(unsigned long node,
- const char *uname, int depth,
- void *data),
- void *data)
-{
- unsigned long p = ((unsigned long)initial_boot_params) +
- initial_boot_params->off_dt_struct;
- int rc = 0;
- int depth = -1;
-
- do {
- u32 tag = *((u32 *)p);
- char *pathp;
-
- p += 4;
- if (tag == OF_DT_END_NODE) {
- depth --;
- continue;
- }
- if (tag == OF_DT_NOP)
- continue;
- if (tag == OF_DT_END)
- break;
- if (tag == OF_DT_PROP) {
- u32 sz = *((u32 *)p);
- p += 8;
- if (initial_boot_params->version < 0x10)
- p = _ALIGN(p, sz >= 8 ? 8 : 4);
- p += sz;
- p = _ALIGN(p, 4);
- continue;
- }
- if (tag != OF_DT_BEGIN_NODE) {
- printk(KERN_WARNING "Invalid tag %x scanning flattened"
- " device tree !\n", tag);
- return -EINVAL;
- }
- depth++;
- pathp = (char *)p;
- p = _ALIGN(p + strlen(pathp) + 1, 4);
- if ((*pathp) == '/') {
- char *lp, *np;
- for (lp = NULL, np = pathp; *np; np++)
- if ((*np) == '/')
- lp = np+1;
- if (lp != NULL)
- pathp = lp;
- }
- rc = it(p, pathp, depth, data);
- if (rc != 0)
- break;
- } while(1);
-
- return rc;
-}
-
-unsigned long __init of_get_flat_dt_root(void)
-{
- unsigned long p = ((unsigned long)initial_boot_params) +
- initial_boot_params->off_dt_struct;
-
- while(*((u32 *)p) == OF_DT_NOP)
- p += 4;
- BUG_ON (*((u32 *)p) != OF_DT_BEGIN_NODE);
- p += 4;
- return _ALIGN(p + strlen((char *)p) + 1, 4);
-}
-
-/**
- * This function can be used within scan_flattened_dt callback to get
- * access to properties
- */
-void* __init of_get_flat_dt_prop(unsigned long node, const char *name,
- unsigned long *size)
-{
- unsigned long p = node;
-
- do {
- u32 tag = *((u32 *)p);
- u32 sz, noff;
- const char *nstr;
-
- p += 4;
- if (tag == OF_DT_NOP)
- continue;
- if (tag != OF_DT_PROP)
- return NULL;
-
- sz = *((u32 *)p);
- noff = *((u32 *)(p + 4));
- p += 8;
- if (initial_boot_params->version < 0x10)
- p = _ALIGN(p, sz >= 8 ? 8 : 4);
-
- nstr = find_flat_dt_string(noff);
- if (nstr == NULL) {
- printk(KERN_WARNING "Can't find property index"
- " name !\n");
- return NULL;
- }
- if (strcmp(name, nstr) == 0) {
- if (size)
- *size = sz;
- return (void *)p;
- }
- p += sz;
- p = _ALIGN(p, 4);
- } while(1);
-}
-
-int __init of_flat_dt_is_compatible(unsigned long node, const char *compat)
-{
- const char* cp;
- unsigned long cplen, l;
-
- cp = of_get_flat_dt_prop(node, "compatible", &cplen);
- if (cp == NULL)
- return 0;
- while (cplen > 0) {
- if (strncasecmp(cp, compat, strlen(compat)) == 0)
- return 1;
- l = strlen(cp) + 1;
- cp += l;
- cplen -= l;
- }
-
- return 0;
-}
-
-static void *__init unflatten_dt_alloc(unsigned long *mem, unsigned long size,
- unsigned long align)
-{
- void *res;
-
- *mem = _ALIGN(*mem, align);
- res = (void *)*mem;
- *mem += size;
-
- return res;
-}
-
-static unsigned long __init unflatten_dt_node(unsigned long mem,
- unsigned long *p,
- struct device_node *dad,
- struct device_node ***allnextpp,
- unsigned long fpsize)
-{
- struct device_node *np;
- struct property *pp, **prev_pp = NULL;
- char *pathp;
- u32 tag;
- unsigned int l, allocl;
- int has_name = 0;
- int new_format = 0;
-
- tag = *((u32 *)(*p));
- if (tag != OF_DT_BEGIN_NODE) {
- printk("Weird tag at start of node: %x\n", tag);
- return mem;
- }
- *p += 4;
- pathp = (char *)*p;
- l = allocl = strlen(pathp) + 1;
- *p = _ALIGN(*p + l, 4);
-
- /* version 0x10 has a more compact unit name here instead of the full
- * path. we accumulate the full path size using "fpsize", we'll rebuild
- * it later. We detect this because the first character of the name is
- * not '/'.
- */
- if ((*pathp) != '/') {
- new_format = 1;
- if (fpsize == 0) {
- /* root node: special case. fpsize accounts for path
- * plus terminating zero. root node only has '/', so
- * fpsize should be 2, but we want to avoid the first
- * level nodes to have two '/' so we use fpsize 1 here
- */
- fpsize = 1;
- allocl = 2;
- } else {
- /* account for '/' and path size minus terminal 0
- * already in 'l'
- */
- fpsize += l;
- allocl = fpsize;
- }
- }
-
-
- np = unflatten_dt_alloc(&mem, sizeof(struct device_node) + allocl,
- __alignof__(struct device_node));
- if (allnextpp) {
- memset(np, 0, sizeof(*np));
- np->full_name = ((char*)np) + sizeof(struct device_node);
- if (new_format) {
- char *p = np->full_name;
- /* rebuild full path for new format */
- if (dad && dad->parent) {
- strcpy(p, dad->full_name);
-#ifdef DEBUG
- if ((strlen(p) + l + 1) != allocl) {
- DBG("%s: p: %d, l: %d, a: %d\n",
- pathp, (int)strlen(p), l, allocl);
- }
-#endif
- p += strlen(p);
- }
- *(p++) = '/';
- memcpy(p, pathp, l);
- } else
- memcpy(np->full_name, pathp, l);
- prev_pp = &np->properties;
- **allnextpp = np;
- *allnextpp = &np->allnext;
- if (dad != NULL) {
- np->parent = dad;
- /* we temporarily use the next field as `last_child'*/
- if (dad->next == 0)
- dad->child = np;
- else
- dad->next->sibling = np;
- dad->next = np;
- }
- kref_init(&np->kref);
- }
- while(1) {
- u32 sz, noff;
- char *pname;
-
- tag = *((u32 *)(*p));
- if (tag == OF_DT_NOP) {
- *p += 4;
- continue;
- }
- if (tag != OF_DT_PROP)
- break;
- *p += 4;
- sz = *((u32 *)(*p));
- noff = *((u32 *)((*p) + 4));
- *p += 8;
- if (initial_boot_params->version < 0x10)
- *p = _ALIGN(*p, sz >= 8 ? 8 : 4);
-
- pname = find_flat_dt_string(noff);
- if (pname == NULL) {
- printk("Can't find property name in list !\n");
- break;
- }
- if (strcmp(pname, "name") == 0)
- has_name = 1;
- l = strlen(pname) + 1;
- pp = unflatten_dt_alloc(&mem, sizeof(struct property),
- __alignof__(struct property));
- if (allnextpp) {
- if (strcmp(pname, "linux,phandle") == 0) {
- np->node = *((u32 *)*p);
- if (np->linux_phandle == 0)
- np->linux_phandle = np->node;
- }
- if (strcmp(pname, "ibm,phandle") == 0)
- np->linux_phandle = *((u32 *)*p);
- pp->name = pname;
- pp->length = sz;
- pp->value = (void *)*p;
- *prev_pp = pp;
- prev_pp = &pp->next;
- }
- *p = _ALIGN((*p) + sz, 4);
- }
- /* with version 0x10 we may not have the name property, recreate
- * it here from the unit name if absent
- */
- if (!has_name) {
- char *p = pathp, *ps = pathp, *pa = NULL;
- int sz;
-
- while (*p) {
- if ((*p) == '@')
- pa = p;
- if ((*p) == '/')
- ps = p + 1;
- p++;
- }
- if (pa < ps)
- pa = p;
- sz = (pa - ps) + 1;
- pp = unflatten_dt_alloc(&mem, sizeof(struct property) + sz,
- __alignof__(struct property));
- if (allnextpp) {
- pp->name = "name";
- pp->length = sz;
- pp->value = pp + 1;
- *prev_pp = pp;
- prev_pp = &pp->next;
- memcpy(pp->value, ps, sz - 1);
- ((char *)pp->value)[sz - 1] = 0;
- DBG("fixed up name for %s -> %s\n", pathp,
- (char *)pp->value);
- }
- }
- if (allnextpp) {
- *prev_pp = NULL;
- np->name = of_get_property(np, "name", NULL);
- np->type = of_get_property(np, "device_type", NULL);
-
- if (!np->name)
- np->name = "<NULL>";
- if (!np->type)
- np->type = "<NULL>";
- }
- while (tag == OF_DT_BEGIN_NODE) {
- mem = unflatten_dt_node(mem, p, np, allnextpp, fpsize);
- tag = *((u32 *)(*p));
- }
- if (tag != OF_DT_END_NODE) {
- printk("Weird tag at end of node: %x\n", tag);
- return mem;
- }
- *p += 4;
- return mem;
-}
-
static int __init early_parse_mem(char *p)
{
if (!p)
@@ -446,7 +93,7 @@ static void __init move_device_tree(void)
DBG("-> move_device_tree\n");
start = __pa(initial_boot_params);
- size = initial_boot_params->totalsize;
+ size = be32_to_cpu(initial_boot_params->totalsize);
if ((memory_limit && (start + size) > memory_limit) ||
overlaps_crashkernel(start, size)) {
@@ -459,54 +106,6 @@ static void __init move_device_tree(void)
DBG("<- move_device_tree\n");
}
-/**
- * unflattens the device-tree passed by the firmware, creating the
- * tree of struct device_node. It also fills the "name" and "type"
- * pointers of the nodes so the normal device-tree walking functions
- * can be used (this used to be done by finish_device_tree)
- */
-void __init unflatten_device_tree(void)
-{
- unsigned long start, mem, size;
- struct device_node **allnextp = &allnodes;
-
- DBG(" -> unflatten_device_tree()\n");
-
- /* First pass, scan for size */
- start = ((unsigned long)initial_boot_params) +
- initial_boot_params->off_dt_struct;
- size = unflatten_dt_node(0, &start, NULL, NULL, 0);
- size = (size | 3) + 1;
-
- DBG(" size is %lx, allocating...\n", size);
-
- /* Allocate memory for the expanded device tree */
- mem = lmb_alloc(size + 4, __alignof__(struct device_node));
- mem = (unsigned long) __va(mem);
-
- ((u32 *)mem)[size / 4] = 0xdeadbeef;
-
- DBG(" unflattening %lx...\n", mem);
-
- /* Second pass, do actual unflattening */
- start = ((unsigned long)initial_boot_params) +
- initial_boot_params->off_dt_struct;
- unflatten_dt_node(mem, &start, NULL, &allnextp, 0);
- if (*((u32 *)start) != OF_DT_END)
- printk(KERN_WARNING "Weird tag at end of tree: %08x\n", *((u32 *)start));
- if (((u32 *)mem)[size / 4] != 0xdeadbeef)
- printk(KERN_WARNING "End of tree marker overwritten: %08x\n",
- ((u32 *)mem)[size / 4] );
- *allnextp = NULL;
-
- /* Get pointer to OF "/chosen" node for use everywhere */
- of_chosen = of_find_node_by_path("/chosen");
- if (of_chosen == NULL)
- of_chosen = of_find_node_by_path("/chosen@0");
-
- DBG(" <- unflatten_device_tree()\n");
-}
-
/*
* ibm,pa-features is a per-cpu property that contains a string of
* attribute descriptors, each of which has a 2 byte header plus up
@@ -763,48 +362,9 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
return 0;
}
-#ifdef CONFIG_BLK_DEV_INITRD
-static void __init early_init_dt_check_for_initrd(unsigned long node)
-{
- unsigned long l;
- u32 *prop;
-
- DBG("Looking for initrd properties... ");
-
- prop = of_get_flat_dt_prop(node, "linux,initrd-start", &l);
- if (prop) {
- initrd_start = (unsigned long)__va(of_read_ulong(prop, l/4));
-
- prop = of_get_flat_dt_prop(node, "linux,initrd-end", &l);
- if (prop) {
- initrd_end = (unsigned long)
- __va(of_read_ulong(prop, l/4));
- initrd_below_start_ok = 1;
- } else {
- initrd_start = 0;
- }
- }
-
- DBG("initrd_start=0x%lx initrd_end=0x%lx\n", initrd_start, initrd_end);
-}
-#else
-static inline void early_init_dt_check_for_initrd(unsigned long node)
-{
-}
-#endif /* CONFIG_BLK_DEV_INITRD */
-
-static int __init early_init_dt_scan_chosen(unsigned long node,
- const char *uname, int depth, void *data)
+void __init early_init_dt_scan_chosen_arch(unsigned long node)
{
unsigned long *lprop;
- unsigned long l;
- char *p;
-
- DBG("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
-
- if (depth != 1 ||
- (strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0))
- return 0;
#ifdef CONFIG_PPC64
/* check if iommu is forced on or off */
@@ -815,17 +375,17 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
#endif
/* mem=x on the command line is the preferred mechanism */
- lprop = of_get_flat_dt_prop(node, "linux,memory-limit", NULL);
- if (lprop)
- memory_limit = *lprop;
+ lprop = of_get_flat_dt_prop(node, "linux,memory-limit", NULL);
+ if (lprop)
+ memory_limit = *lprop;
#ifdef CONFIG_PPC64
- lprop = of_get_flat_dt_prop(node, "linux,tce-alloc-start", NULL);
- if (lprop)
- tce_alloc_start = *lprop;
- lprop = of_get_flat_dt_prop(node, "linux,tce-alloc-end", NULL);
- if (lprop)
- tce_alloc_end = *lprop;
+ lprop = of_get_flat_dt_prop(node, "linux,tce-alloc-start", NULL);
+ if (lprop)
+ tce_alloc_start = *lprop;
+ lprop = of_get_flat_dt_prop(node, "linux,tce-alloc-end", NULL);
+ if (lprop)
+ tce_alloc_end = *lprop;
#endif
#ifdef CONFIG_KEXEC
@@ -837,51 +397,6 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
if (lprop)
crashk_res.end = crashk_res.start + *lprop - 1;
#endif
-
- early_init_dt_check_for_initrd(node);
-
- /* Retreive command line */
- p = of_get_flat_dt_prop(node, "bootargs", &l);
- if (p != NULL && l > 0)
- strlcpy(cmd_line, p, min((int)l, COMMAND_LINE_SIZE));
-
-#ifdef CONFIG_CMDLINE
- if (p == NULL || l == 0 || (l == 1 && (*p) == 0))
- strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
-#endif /* CONFIG_CMDLINE */
-
- DBG("Command line is: %s\n", cmd_line);
-
- /* break now */
- return 1;
-}
-
-static int __init early_init_dt_scan_root(unsigned long node,
- const char *uname, int depth, void *data)
-{
- u32 *prop;
-
- if (depth != 0)
- return 0;
-
- prop = of_get_flat_dt_prop(node, "#size-cells", NULL);
- dt_root_size_cells = (prop == NULL) ? 1 : *prop;
- DBG("dt_root_size_cells = %x\n", dt_root_size_cells);
-
- prop = of_get_flat_dt_prop(node, "#address-cells", NULL);
- dt_root_addr_cells = (prop == NULL) ? 2 : *prop;
- DBG("dt_root_addr_cells = %x\n", dt_root_addr_cells);
-
- /* break now */
- return 1;
-}
-
-static u64 __init dt_mem_next_cell(int s, cell_t **cellp)
-{
- cell_t *p = *cellp;
-
- *cellp = p + s;
- return of_read_number(p, s);
}
#ifdef CONFIG_PPC_PSERIES
@@ -893,22 +408,22 @@ static u64 __init dt_mem_next_cell(int s, cell_t **cellp)
*/
static int __init early_init_dt_scan_drconf_memory(unsigned long node)
{
- cell_t *dm, *ls, *usm;
+ __be32 *dm, *ls, *usm;
unsigned long l, n, flags;
u64 base, size, lmb_size;
unsigned int is_kexec_kdump = 0, rngs;
ls = of_get_flat_dt_prop(node, "ibm,lmb-size", &l);
- if (ls == NULL || l < dt_root_size_cells * sizeof(cell_t))
+ if (ls == NULL || l < dt_root_size_cells * sizeof(__be32))
return 0;
lmb_size = dt_mem_next_cell(dt_root_size_cells, &ls);
dm = of_get_flat_dt_prop(node, "ibm,dynamic-memory", &l);
- if (dm == NULL || l < sizeof(cell_t))
+ if (dm == NULL || l < sizeof(__be32))
return 0;
n = *dm++; /* number of entries */
- if (l < (n * (dt_root_addr_cells + 4) + 1) * sizeof(cell_t))
+ if (l < (n * (dt_root_addr_cells + 4) + 1) * sizeof(__be32))
return 0;
/* check if this is a kexec/kdump kernel. */
@@ -963,65 +478,47 @@ static int __init early_init_dt_scan_drconf_memory(unsigned long node)
#define early_init_dt_scan_drconf_memory(node) 0
#endif /* CONFIG_PPC_PSERIES */
-static int __init early_init_dt_scan_memory(unsigned long node,
- const char *uname, int depth, void *data)
+static int __init early_init_dt_scan_memory_ppc(unsigned long node,
+ const char *uname,
+ int depth, void *data)
{
- char *type = of_get_flat_dt_prop(node, "device_type", NULL);
- cell_t *reg, *endp;
- unsigned long l;
-
- /* Look for the ibm,dynamic-reconfiguration-memory node */
if (depth == 1 &&
strcmp(uname, "ibm,dynamic-reconfiguration-memory") == 0)
return early_init_dt_scan_drconf_memory(node);
+
+ return early_init_dt_scan_memory(node, uname, depth, data);
+}
- /* We are scanning "memory" nodes only */
- if (type == NULL) {
- /*
- * The longtrail doesn't have a device_type on the
- * /memory node, so look for the node called /memory@0.
- */
- if (depth != 1 || strcmp(uname, "memory@0") != 0)
- return 0;
- } else if (strcmp(type, "memory") != 0)
- return 0;
-
- reg = of_get_flat_dt_prop(node, "linux,usable-memory", &l);
- if (reg == NULL)
- reg = of_get_flat_dt_prop(node, "reg", &l);
- if (reg == NULL)
- return 0;
-
- endp = reg + (l / sizeof(cell_t));
-
- DBG("memory scan node %s, reg size %ld, data: %x %x %x %x,\n",
- uname, l, reg[0], reg[1], reg[2], reg[3]);
-
- while ((endp - reg) >= (dt_root_addr_cells + dt_root_size_cells)) {
- u64 base, size;
+void __init early_init_dt_add_memory_arch(u64 base, u64 size)
+{
+#if defined(CONFIG_PPC64)
+ if (iommu_is_off) {
+ if (base >= 0x80000000ul)
+ return;
+ if ((base + size) > 0x80000000ul)
+ size = 0x80000000ul - base;
+ }
+#endif
- base = dt_mem_next_cell(dt_root_addr_cells, &reg);
- size = dt_mem_next_cell(dt_root_size_cells, &reg);
+ lmb_add(base, size);
- if (size == 0)
- continue;
- DBG(" - %llx , %llx\n", (unsigned long long)base,
- (unsigned long long)size);
-#ifdef CONFIG_PPC64
- if (iommu_is_off) {
- if (base >= 0x80000000ul)
- continue;
- if ((base + size) > 0x80000000ul)
- size = 0x80000000ul - base;
- }
-#endif
- lmb_add(base, size);
+ memstart_addr = min((u64)memstart_addr, base);
+}
- memstart_addr = min((u64)memstart_addr, base);
- }
+u64 __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
+{
+ return lmb_alloc(size, align);
+}
- return 0;
+#ifdef CONFIG_BLK_DEV_INITRD
+void __init early_init_dt_setup_initrd_arch(unsigned long start,
+ unsigned long end)
+{
+ initrd_start = (unsigned long)__va(start);
+ initrd_end = (unsigned long)__va(end);
+ initrd_below_start_ok = 1;
}
+#endif
static void __init early_reserve_mem(void)
{
@@ -1186,7 +683,7 @@ void __init early_init_devtree(void *params)
/* Scan memory nodes and rebuild LMBs */
lmb_init();
of_scan_flat_dt(early_init_dt_scan_root, NULL);
- of_scan_flat_dt(early_init_dt_scan_memory, NULL);
+ of_scan_flat_dt(early_init_dt_scan_memory_ppc, NULL);
/* Save command line for /proc/cmdline and then parse parameters */
strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE);
@@ -1234,25 +731,6 @@ void __init early_init_devtree(void *params)
DBG(" <- early_init_devtree()\n");
}
-
-/**
- * Indicates whether the root node has a given value in its
- * compatible property.
- */
-int machine_is_compatible(const char *compat)
-{
- struct device_node *root;
- int rc = 0;
-
- root = of_find_node_by_path("/");
- if (root) {
- rc = of_device_is_compatible(root, compat);
- of_node_put(root);
- }
- return rc;
-}
-EXPORT_SYMBOL(machine_is_compatible);
-
/*******
*
* New implementation of the OF "find" APIs, return a refcounted
@@ -1265,27 +743,6 @@ EXPORT_SYMBOL(machine_is_compatible);
*******/
/**
- * of_find_node_by_phandle - Find a node given a phandle
- * @handle: phandle of the node to find
- *
- * Returns a node pointer with refcount incremented, use
- * of_node_put() on it when done.
- */
-struct device_node *of_find_node_by_phandle(phandle handle)
-{
- struct device_node *np;
-
- read_lock(&devtree_lock);
- for (np = allnodes; np != 0; np = np->allnext)
- if (np->linux_phandle == handle)
- break;
- of_node_get(np);
- read_unlock(&devtree_lock);
- return np;
-}
-EXPORT_SYMBOL(of_find_node_by_phandle);
-
-/**
* of_find_next_cache_node - Find a node's subsidiary cache
* @np: node of type "cpu" or "cache"
*
@@ -1316,138 +773,6 @@ struct device_node *of_find_next_cache_node(struct device_node *np)
return NULL;
}
-/**
- * of_node_get - Increment refcount of a node
- * @node: Node to inc refcount, NULL is supported to
- * simplify writing of callers
- *
- * Returns node.
- */
-struct device_node *of_node_get(struct device_node *node)
-{
- if (node)
- kref_get(&node->kref);
- return node;
-}
-EXPORT_SYMBOL(of_node_get);
-
-static inline struct device_node * kref_to_device_node(struct kref *kref)
-{
- return container_of(kref, struct device_node, kref);
-}
-
-/**
- * of_node_release - release a dynamically allocated node
- * @kref: kref element of the node to be released
- *
- * In of_node_put() this function is passed to kref_put()
- * as the destructor.
- */
-static void of_node_release(struct kref *kref)
-{
- struct device_node *node = kref_to_device_node(kref);
- struct property *prop = node->properties;
-
- /* We should never be releasing nodes that haven't been detached. */
- if (!of_node_check_flag(node, OF_DETACHED)) {
- printk("WARNING: Bad of_node_put() on %s\n", node->full_name);
- dump_stack();
- kref_init(&node->kref);
- return;
- }
-
- if (!of_node_check_flag(node, OF_DYNAMIC))
- return;
-
- while (prop) {
- struct property *next = prop->next;
- kfree(prop->name);
- kfree(prop->value);
- kfree(prop);
- prop = next;
-
- if (!prop) {
- prop = node->deadprops;
- node->deadprops = NULL;
- }
- }
- kfree(node->full_name);
- kfree(node->data);
- kfree(node);
-}
-
-/**
- * of_node_put - Decrement refcount of a node
- * @node: Node to dec refcount, NULL is supported to
- * simplify writing of callers
- *
- */
-void of_node_put(struct device_node *node)
-{
- if (node)
- kref_put(&node->kref, of_node_release);
-}
-EXPORT_SYMBOL(of_node_put);
-
-/*
- * Plug a device node into the tree and global list.
- */
-void of_attach_node(struct device_node *np)
-{
- unsigned long flags;
-
- write_lock_irqsave(&devtree_lock, flags);
- np->sibling = np->parent->child;
- np->allnext = allnodes;
- np->parent->child = np;
- allnodes = np;
- write_unlock_irqrestore(&devtree_lock, flags);
-}
-
-/*
- * "Unplug" a node from the device tree. The caller must hold
- * a reference to the node. The memory associated with the node
- * is not freed until its refcount goes to zero.
- */
-void of_detach_node(struct device_node *np)
-{
- struct device_node *parent;
- unsigned long flags;
-
- write_lock_irqsave(&devtree_lock, flags);
-
- parent = np->parent;
- if (!parent)
- goto out_unlock;
-
- if (allnodes == np)
- allnodes = np->allnext;
- else {
- struct device_node *prev;
- for (prev = allnodes;
- prev->allnext != np;
- prev = prev->allnext)
- ;
- prev->allnext = np->allnext;
- }
-
- if (parent->child == np)
- parent->child = np->sibling;
- else {
- struct device_node *prevsib;
- for (prevsib = np->parent->child;
- prevsib->sibling != np;
- prevsib = prevsib->sibling)
- ;
- prevsib->sibling = np->sibling;
- }
-
- of_node_set_flag(np, OF_DETACHED);
-
-out_unlock:
- write_unlock_irqrestore(&devtree_lock, flags);
-}
-
#ifdef CONFIG_PPC_PSERIES
/*
* Fix up the uninitialized fields in a new device node:
@@ -1479,9 +804,9 @@ static int of_finish_dynamic_node(struct device_node *node)
if (machine_is(powermac))
return -ENODEV;
- /* fix up new node's linux_phandle field */
+ /* fix up new node's phandle field */
if ((ibm_phandle = of_get_property(node, "ibm,phandle", NULL)))
- node->linux_phandle = *ibm_phandle;
+ node->phandle = *ibm_phandle;
out:
of_node_put(parent);
@@ -1520,120 +845,6 @@ static int __init prom_reconfig_setup(void)
__initcall(prom_reconfig_setup);
#endif
-/*
- * Add a property to a node
- */
-int prom_add_property(struct device_node* np, struct property* prop)
-{
- struct property **next;
- unsigned long flags;
-
- prop->next = NULL;
- write_lock_irqsave(&devtree_lock, flags);
- next = &np->properties;
- while (*next) {
- if (strcmp(prop->name, (*next)->name) == 0) {
- /* duplicate ! don't insert it */
- write_unlock_irqrestore(&devtree_lock, flags);
- return -1;
- }
- next = &(*next)->next;
- }
- *next = prop;
- write_unlock_irqrestore(&devtree_lock, flags);
-
-#ifdef CONFIG_PROC_DEVICETREE
- /* try to add to proc as well if it was initialized */
- if (np->pde)
- proc_device_tree_add_prop(np->pde, prop);
-#endif /* CONFIG_PROC_DEVICETREE */
-
- return 0;
-}
-
-/*
- * Remove a property from a node. Note that we don't actually
- * remove it, since we have given out who-knows-how-many pointers
- * to the data using get-property. Instead we just move the property
- * to the "dead properties" list, so it won't be found any more.
- */
-int prom_remove_property(struct device_node *np, struct property *prop)
-{
- struct property **next;
- unsigned long flags;
- int found = 0;
-
- write_lock_irqsave(&devtree_lock, flags);
- next = &np->properties;
- while (*next) {
- if (*next == prop) {
- /* found the node */
- *next = prop->next;
- prop->next = np->deadprops;
- np->deadprops = prop;
- found = 1;
- break;
- }
- next = &(*next)->next;
- }
- write_unlock_irqrestore(&devtree_lock, flags);
-
- if (!found)
- return -ENODEV;
-
-#ifdef CONFIG_PROC_DEVICETREE
- /* try to remove the proc node as well */
- if (np->pde)
- proc_device_tree_remove_prop(np->pde, prop);
-#endif /* CONFIG_PROC_DEVICETREE */
-
- return 0;
-}
-
-/*
- * Update a property in a node. Note that we don't actually
- * remove it, since we have given out who-knows-how-many pointers
- * to the data using get-property. Instead we just move the property
- * to the "dead properties" list, and add the new property to the
- * property list
- */
-int prom_update_property(struct device_node *np,
- struct property *newprop,
- struct property *oldprop)
-{
- struct property **next;
- unsigned long flags;
- int found = 0;
-
- write_lock_irqsave(&devtree_lock, flags);
- next = &np->properties;
- while (*next) {
- if (*next == oldprop) {
- /* found the node */
- newprop->next = oldprop->next;
- *next = newprop;
- oldprop->next = np->deadprops;
- np->deadprops = oldprop;
- found = 1;
- break;
- }
- next = &(*next)->next;
- }
- write_unlock_irqrestore(&devtree_lock, flags);
-
- if (!found)
- return -ENODEV;
-
-#ifdef CONFIG_PROC_DEVICETREE
- /* try to add to proc as well if it was initialized */
- if (np->pde)
- proc_device_tree_update_prop(np->pde, newprop, oldprop);
-#endif /* CONFIG_PROC_DEVICETREE */
-
- 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)
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index bafac2e41ae..5f306c4946e 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -654,6 +654,9 @@ static void __init early_cmdline_parse(void)
#define OV5_CMO 0x00
#endif
+/* Option Vector 6: IBM PAPR hints */
+#define OV6_LINUX 0x02 /* Linux is our OS */
+
/*
* The architecture vector has an array of PVR mask/value pairs,
* followed by # option vectors - 1, followed by the option vectors.
@@ -665,7 +668,7 @@ static unsigned char ibm_architecture_vec[] = {
W(0xffffffff), W(0x0f000003), /* all 2.06-compliant */
W(0xffffffff), W(0x0f000002), /* all 2.05-compliant */
W(0xfffffffe), W(0x0f000001), /* all 2.04-compliant and earlier */
- 5 - 1, /* 5 option vectors */
+ 6 - 1, /* 6 option vectors */
/* option vector 1: processor architectures supported */
3 - 2, /* length */
@@ -697,12 +700,29 @@ static unsigned char ibm_architecture_vec[] = {
0, /* don't halt */
/* option vector 5: PAPR/OF options */
- 5 - 2, /* length */
+ 13 - 2, /* length */
0, /* don't ignore, don't halt */
OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES | OV5_DRCONF_MEMORY |
OV5_DONATE_DEDICATE_CPU | OV5_MSI,
0,
OV5_CMO,
+ 0,
+ 0,
+ 0,
+ 0,
+ /* WARNING: The offset of the "number of cores" field below
+ * must match by the macro below. Update the definition if
+ * the structure layout changes.
+ */
+#define IBM_ARCH_VEC_NRCORES_OFFSET 100
+ W(NR_CPUS), /* number of cores supported */
+
+ /* option vector 6: IBM PAPR hints */
+ 4 - 2, /* length */
+ 0,
+ 0,
+ OV6_LINUX,
+
};
/* Old method - ELF header with PT_NOTE sections */
@@ -792,13 +812,70 @@ static struct fake_elf {
}
};
+static int __init prom_count_smt_threads(void)
+{
+ phandle node;
+ char type[64];
+ unsigned int plen;
+
+ /* Pick up th first CPU node we can find */
+ for (node = 0; prom_next_node(&node); ) {
+ type[0] = 0;
+ prom_getprop(node, "device_type", type, sizeof(type));
+
+ if (strcmp(type, RELOC("cpu")))
+ continue;
+ /*
+ * There is an entry for each smt thread, each entry being
+ * 4 bytes long. All cpus should have the same number of
+ * smt threads, so return after finding the first.
+ */
+ plen = prom_getproplen(node, "ibm,ppc-interrupt-server#s");
+ if (plen == PROM_ERROR)
+ break;
+ plen >>= 2;
+ prom_debug("Found 0x%x smt threads per core\n", (unsigned long)plen);
+
+ /* Sanity check */
+ if (plen < 1 || plen > 64) {
+ prom_printf("Threads per core 0x%x out of bounds, assuming 1\n",
+ (unsigned long)plen);
+ return 1;
+ }
+ return plen;
+ }
+ prom_debug("No threads found, assuming 1 per core\n");
+
+ return 1;
+
+}
+
+
static void __init prom_send_capabilities(void)
{
ihandle elfloader, root;
prom_arg_t ret;
+ u32 *cores;
root = call_prom("open", 1, 1, ADDR("/"));
if (root != 0) {
+ /* We need to tell the FW about the number of cores we support.
+ *
+ * To do that, we count the number of threads on the first core
+ * (we assume this is the same for all cores) and use it to
+ * divide NR_CPUS.
+ */
+ cores = (u32 *)PTRRELOC(&ibm_architecture_vec[IBM_ARCH_VEC_NRCORES_OFFSET]);
+ if (*cores != NR_CPUS) {
+ prom_printf("WARNING ! "
+ "ibm_architecture_vec structure inconsistent: 0x%x !\n",
+ *cores);
+ } else {
+ *cores = NR_CPUS / prom_count_smt_threads();
+ prom_printf("Max number of cores passed to firmware: 0x%x\n",
+ (unsigned long)*cores);
+ }
+
/* try calling the ibm,client-architecture-support method */
prom_printf("Calling ibm,client-architecture-support...");
if (call_prom_ret("call-method", 3, 2, &ret,
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index ef149880c14..d9b05866615 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -46,7 +46,7 @@
/*
* Set of msr bits that gdb can change on behalf of a process.
*/
-#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
#define MSR_DEBUGCHANGE 0
#else
#define MSR_DEBUGCHANGE (MSR_SE | MSR_BE)
@@ -703,7 +703,7 @@ void user_enable_single_step(struct task_struct *task)
struct pt_regs *regs = task->thread.regs;
if (regs != NULL) {
-#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
task->thread.dbcr0 &= ~DBCR0_BT;
task->thread.dbcr0 |= DBCR0_IDM | DBCR0_IC;
regs->msr |= MSR_DE;
@@ -720,7 +720,7 @@ void user_enable_block_step(struct task_struct *task)
struct pt_regs *regs = task->thread.regs;
if (regs != NULL) {
-#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
task->thread.dbcr0 &= ~DBCR0_IC;
task->thread.dbcr0 = DBCR0_IDM | DBCR0_BT;
regs->msr |= MSR_DE;
@@ -737,17 +737,25 @@ void user_disable_single_step(struct task_struct *task)
struct pt_regs *regs = task->thread.regs;
if (regs != NULL) {
-#if defined(CONFIG_BOOKE)
- /* If DAC don't clear DBCRO_IDM or MSR_DE */
- if (task->thread.dabr)
- task->thread.dbcr0 &= ~(DBCR0_IC | DBCR0_BT);
- else {
- task->thread.dbcr0 &= ~(DBCR0_IC | DBCR0_BT | DBCR0_IDM);
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+ /*
+ * The logic to disable single stepping should be as
+ * simple as turning off the Instruction Complete flag.
+ * And, after doing so, if all debug flags are off, turn
+ * off DBCR0(IDM) and MSR(DE) .... Torez
+ */
+ task->thread.dbcr0 &= ~DBCR0_IC;
+ /*
+ * Test to see if any of the DBCR_ACTIVE_EVENTS bits are set.
+ */
+ if (!DBCR_ACTIVE_EVENTS(task->thread.dbcr0,
+ task->thread.dbcr1)) {
+ /*
+ * All debug events were off.....
+ */
+ task->thread.dbcr0 &= ~DBCR0_IDM;
regs->msr &= ~MSR_DE;
}
-#elif defined(CONFIG_40x)
- task->thread.dbcr0 &= ~(DBCR0_IC | DBCR0_BT | DBCR0_IDM);
- regs->msr &= ~MSR_DE;
#else
regs->msr &= ~(MSR_SE | MSR_BE);
#endif
@@ -769,8 +777,7 @@ int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,
if ((data & ~0x7UL) >= TASK_SIZE)
return -EIO;
-#ifndef CONFIG_BOOKE
-
+#ifndef CONFIG_PPC_ADV_DEBUG_REGS
/* For processors using DABR (i.e. 970), the bottom 3 bits are flags.
* It was assumed, on previous implementations, that 3 bits were
* passed together with the data address, fitting the design of the
@@ -789,21 +796,22 @@ int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,
/* Move contents to the DABR register */
task->thread.dabr = data;
-
-#endif
-#if defined(CONFIG_BOOKE)
-
+#else /* CONFIG_PPC_ADV_DEBUG_REGS */
/* As described above, it was assumed 3 bits were passed with the data
* address, but we will assume only the mode bits will be passed
* as to not cause alignment restrictions for DAC-based processors.
*/
/* DAC's hold the whole address without any mode flags */
- task->thread.dabr = data & ~0x3UL;
-
- if (task->thread.dabr == 0) {
- task->thread.dbcr0 &= ~(DBSR_DAC1R | DBSR_DAC1W | DBCR0_IDM);
- task->thread.regs->msr &= ~MSR_DE;
+ task->thread.dac1 = data & ~0x3UL;
+
+ if (task->thread.dac1 == 0) {
+ dbcr_dac(task) &= ~(DBCR_DAC1R | DBCR_DAC1W);
+ if (!DBCR_ACTIVE_EVENTS(task->thread.dbcr0,
+ task->thread.dbcr1)) {
+ task->thread.regs->msr &= ~MSR_DE;
+ task->thread.dbcr0 &= ~DBCR0_IDM;
+ }
return 0;
}
@@ -814,17 +822,17 @@ int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,
/* Set the Internal Debugging flag (IDM bit 1) for the DBCR0
register */
- task->thread.dbcr0 = DBCR0_IDM;
+ task->thread.dbcr0 |= DBCR0_IDM;
/* Check for write and read flags and set DBCR0
accordingly */
+ dbcr_dac(task) &= ~(DBCR_DAC1R|DBCR_DAC1W);
if (data & 0x1UL)
- task->thread.dbcr0 |= DBSR_DAC1R;
+ dbcr_dac(task) |= DBCR_DAC1R;
if (data & 0x2UL)
- task->thread.dbcr0 |= DBSR_DAC1W;
-
+ dbcr_dac(task) |= DBCR_DAC1W;
task->thread.regs->msr |= MSR_DE;
-#endif
+#endif /* CONFIG_PPC_ADV_DEBUG_REGS */
return 0;
}
@@ -839,6 +847,394 @@ void ptrace_disable(struct task_struct *child)
user_disable_single_step(child);
}
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+static long set_intruction_bp(struct task_struct *child,
+ struct ppc_hw_breakpoint *bp_info)
+{
+ int slot;
+ int slot1_in_use = ((child->thread.dbcr0 & DBCR0_IAC1) != 0);
+ int slot2_in_use = ((child->thread.dbcr0 & DBCR0_IAC2) != 0);
+ int slot3_in_use = ((child->thread.dbcr0 & DBCR0_IAC3) != 0);
+ int slot4_in_use = ((child->thread.dbcr0 & DBCR0_IAC4) != 0);
+
+ if (dbcr_iac_range(child) & DBCR_IAC12MODE)
+ slot2_in_use = 1;
+ if (dbcr_iac_range(child) & DBCR_IAC34MODE)
+ slot4_in_use = 1;
+
+ if (bp_info->addr >= TASK_SIZE)
+ return -EIO;
+
+ if (bp_info->addr_mode != PPC_BREAKPOINT_MODE_EXACT) {
+
+ /* Make sure range is valid. */
+ if (bp_info->addr2 >= TASK_SIZE)
+ return -EIO;
+
+ /* We need a pair of IAC regsisters */
+ if ((!slot1_in_use) && (!slot2_in_use)) {
+ slot = 1;
+ child->thread.iac1 = bp_info->addr;
+ child->thread.iac2 = bp_info->addr2;
+ child->thread.dbcr0 |= DBCR0_IAC1;
+ if (bp_info->addr_mode ==
+ PPC_BREAKPOINT_MODE_RANGE_EXCLUSIVE)
+ dbcr_iac_range(child) |= DBCR_IAC12X;
+ else
+ dbcr_iac_range(child) |= DBCR_IAC12I;
+#if CONFIG_PPC_ADV_DEBUG_IACS > 2
+ } else if ((!slot3_in_use) && (!slot4_in_use)) {
+ slot = 3;
+ child->thread.iac3 = bp_info->addr;
+ child->thread.iac4 = bp_info->addr2;
+ child->thread.dbcr0 |= DBCR0_IAC3;
+ if (bp_info->addr_mode ==
+ PPC_BREAKPOINT_MODE_RANGE_EXCLUSIVE)
+ dbcr_iac_range(child) |= DBCR_IAC34X;
+ else
+ dbcr_iac_range(child) |= DBCR_IAC34I;
+#endif
+ } else
+ return -ENOSPC;
+ } else {
+ /* We only need one. If possible leave a pair free in
+ * case a range is needed later
+ */
+ if (!slot1_in_use) {
+ /*
+ * Don't use iac1 if iac1-iac2 are free and either
+ * iac3 or iac4 (but not both) are free
+ */
+ if (slot2_in_use || (slot3_in_use == slot4_in_use)) {
+ slot = 1;
+ child->thread.iac1 = bp_info->addr;
+ child->thread.dbcr0 |= DBCR0_IAC1;
+ goto out;
+ }
+ }
+ if (!slot2_in_use) {
+ slot = 2;
+ child->thread.iac2 = bp_info->addr;
+ child->thread.dbcr0 |= DBCR0_IAC2;
+#if CONFIG_PPC_ADV_DEBUG_IACS > 2
+ } else if (!slot3_in_use) {
+ slot = 3;
+ child->thread.iac3 = bp_info->addr;
+ child->thread.dbcr0 |= DBCR0_IAC3;
+ } else if (!slot4_in_use) {
+ slot = 4;
+ child->thread.iac4 = bp_info->addr;
+ child->thread.dbcr0 |= DBCR0_IAC4;
+#endif
+ } else
+ return -ENOSPC;
+ }
+out:
+ child->thread.dbcr0 |= DBCR0_IDM;
+ child->thread.regs->msr |= MSR_DE;
+
+ return slot;
+}
+
+static int del_instruction_bp(struct task_struct *child, int slot)
+{
+ switch (slot) {
+ case 1:
+ if (child->thread.iac1 == 0)
+ return -ENOENT;
+
+ if (dbcr_iac_range(child) & DBCR_IAC12MODE) {
+ /* address range - clear slots 1 & 2 */
+ child->thread.iac2 = 0;
+ dbcr_iac_range(child) &= ~DBCR_IAC12MODE;
+ }
+ child->thread.iac1 = 0;
+ child->thread.dbcr0 &= ~DBCR0_IAC1;
+ break;
+ case 2:
+ if (child->thread.iac2 == 0)
+ return -ENOENT;
+
+ if (dbcr_iac_range(child) & DBCR_IAC12MODE)
+ /* used in a range */
+ return -EINVAL;
+ child->thread.iac2 = 0;
+ child->thread.dbcr0 &= ~DBCR0_IAC2;
+ break;
+#if CONFIG_PPC_ADV_DEBUG_IACS > 2
+ case 3:
+ if (child->thread.iac3 == 0)
+ return -ENOENT;
+
+ if (dbcr_iac_range(child) & DBCR_IAC34MODE) {
+ /* address range - clear slots 3 & 4 */
+ child->thread.iac4 = 0;
+ dbcr_iac_range(child) &= ~DBCR_IAC34MODE;
+ }
+ child->thread.iac3 = 0;
+ child->thread.dbcr0 &= ~DBCR0_IAC3;
+ break;
+ case 4:
+ if (child->thread.iac4 == 0)
+ return -ENOENT;
+
+ if (dbcr_iac_range(child) & DBCR_IAC34MODE)
+ /* Used in a range */
+ return -EINVAL;
+ child->thread.iac4 = 0;
+ child->thread.dbcr0 &= ~DBCR0_IAC4;
+ break;
+#endif
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int set_dac(struct task_struct *child, struct ppc_hw_breakpoint *bp_info)
+{
+ int byte_enable =
+ (bp_info->condition_mode >> PPC_BREAKPOINT_CONDITION_BE_SHIFT)
+ & 0xf;
+ int condition_mode =
+ bp_info->condition_mode & PPC_BREAKPOINT_CONDITION_MODE;
+ int slot;
+
+ if (byte_enable && (condition_mode == 0))
+ return -EINVAL;
+
+ if (bp_info->addr >= TASK_SIZE)
+ return -EIO;
+
+ if ((dbcr_dac(child) & (DBCR_DAC1R | DBCR_DAC1W)) == 0) {
+ slot = 1;
+ if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_READ)
+ dbcr_dac(child) |= DBCR_DAC1R;
+ if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE)
+ dbcr_dac(child) |= DBCR_DAC1W;
+ child->thread.dac1 = (unsigned long)bp_info->addr;
+#if CONFIG_PPC_ADV_DEBUG_DVCS > 0
+ if (byte_enable) {
+ child->thread.dvc1 =
+ (unsigned long)bp_info->condition_value;
+ child->thread.dbcr2 |=
+ ((byte_enable << DBCR2_DVC1BE_SHIFT) |
+ (condition_mode << DBCR2_DVC1M_SHIFT));
+ }
+#endif
+#ifdef CONFIG_PPC_ADV_DEBUG_DAC_RANGE
+ } else if (child->thread.dbcr2 & DBCR2_DAC12MODE) {
+ /* Both dac1 and dac2 are part of a range */
+ return -ENOSPC;
+#endif
+ } else if ((dbcr_dac(child) & (DBCR_DAC2R | DBCR_DAC2W)) == 0) {
+ slot = 2;
+ if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_READ)
+ dbcr_dac(child) |= DBCR_DAC2R;
+ if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE)
+ dbcr_dac(child) |= DBCR_DAC2W;
+ child->thread.dac2 = (unsigned long)bp_info->addr;
+#if CONFIG_PPC_ADV_DEBUG_DVCS > 0
+ if (byte_enable) {
+ child->thread.dvc2 =
+ (unsigned long)bp_info->condition_value;
+ child->thread.dbcr2 |=
+ ((byte_enable << DBCR2_DVC2BE_SHIFT) |
+ (condition_mode << DBCR2_DVC2M_SHIFT));
+ }
+#endif
+ } else
+ return -ENOSPC;
+ child->thread.dbcr0 |= DBCR0_IDM;
+ child->thread.regs->msr |= MSR_DE;
+
+ return slot + 4;
+}
+
+static int del_dac(struct task_struct *child, int slot)
+{
+ if (slot == 1) {
+ if (child->thread.dac1 == 0)
+ return -ENOENT;
+
+ child->thread.dac1 = 0;
+ dbcr_dac(child) &= ~(DBCR_DAC1R | DBCR_DAC1W);
+#ifdef CONFIG_PPC_ADV_DEBUG_DAC_RANGE
+ if (child->thread.dbcr2 & DBCR2_DAC12MODE) {
+ child->thread.dac2 = 0;
+ child->thread.dbcr2 &= ~DBCR2_DAC12MODE;
+ }
+ child->thread.dbcr2 &= ~(DBCR2_DVC1M | DBCR2_DVC1BE);
+#endif
+#if CONFIG_PPC_ADV_DEBUG_DVCS > 0
+ child->thread.dvc1 = 0;
+#endif
+ } else if (slot == 2) {
+ if (child->thread.dac1 == 0)
+ return -ENOENT;
+
+#ifdef CONFIG_PPC_ADV_DEBUG_DAC_RANGE
+ if (child->thread.dbcr2 & DBCR2_DAC12MODE)
+ /* Part of a range */
+ return -EINVAL;
+ child->thread.dbcr2 &= ~(DBCR2_DVC2M | DBCR2_DVC2BE);
+#endif
+#if CONFIG_PPC_ADV_DEBUG_DVCS > 0
+ child->thread.dvc2 = 0;
+#endif
+ child->thread.dac2 = 0;
+ dbcr_dac(child) &= ~(DBCR_DAC2R | DBCR_DAC2W);
+ } else
+ return -EINVAL;
+
+ return 0;
+}
+#endif /* CONFIG_PPC_ADV_DEBUG_REGS */
+
+#ifdef CONFIG_PPC_ADV_DEBUG_DAC_RANGE
+static int set_dac_range(struct task_struct *child,
+ struct ppc_hw_breakpoint *bp_info)
+{
+ int mode = bp_info->addr_mode & PPC_BREAKPOINT_MODE_MASK;
+
+ /* We don't allow range watchpoints to be used with DVC */
+ if (bp_info->condition_mode)
+ return -EINVAL;
+
+ /*
+ * Best effort to verify the address range. The user/supervisor bits
+ * prevent trapping in kernel space, but let's fail on an obvious bad
+ * range. The simple test on the mask is not fool-proof, and any
+ * exclusive range will spill over into kernel space.
+ */
+ if (bp_info->addr >= TASK_SIZE)
+ return -EIO;
+ if (mode == PPC_BREAKPOINT_MODE_MASK) {
+ /*
+ * dac2 is a bitmask. Don't allow a mask that makes a
+ * kernel space address from a valid dac1 value
+ */
+ if (~((unsigned long)bp_info->addr2) >= TASK_SIZE)
+ return -EIO;
+ } else {
+ /*
+ * For range breakpoints, addr2 must also be a valid address
+ */
+ if (bp_info->addr2 >= TASK_SIZE)
+ return -EIO;
+ }
+
+ if (child->thread.dbcr0 &
+ (DBCR0_DAC1R | DBCR0_DAC1W | DBCR0_DAC2R | DBCR0_DAC2W))
+ return -ENOSPC;
+
+ if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_READ)
+ child->thread.dbcr0 |= (DBCR0_DAC1R | DBCR0_IDM);
+ if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE)
+ child->thread.dbcr0 |= (DBCR0_DAC1W | DBCR0_IDM);
+ child->thread.dac1 = bp_info->addr;
+ child->thread.dac2 = bp_info->addr2;
+ if (mode == PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE)
+ child->thread.dbcr2 |= DBCR2_DAC12M;
+ else if (mode == PPC_BREAKPOINT_MODE_RANGE_EXCLUSIVE)
+ child->thread.dbcr2 |= DBCR2_DAC12MX;
+ else /* PPC_BREAKPOINT_MODE_MASK */
+ child->thread.dbcr2 |= DBCR2_DAC12MM;
+ child->thread.regs->msr |= MSR_DE;
+
+ return 5;
+}
+#endif /* CONFIG_PPC_ADV_DEBUG_DAC_RANGE */
+
+static long ppc_set_hwdebug(struct task_struct *child,
+ struct ppc_hw_breakpoint *bp_info)
+{
+ if (bp_info->version != 1)
+ return -ENOTSUPP;
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+ /*
+ * Check for invalid flags and combinations
+ */
+ if ((bp_info->trigger_type == 0) ||
+ (bp_info->trigger_type & ~(PPC_BREAKPOINT_TRIGGER_EXECUTE |
+ PPC_BREAKPOINT_TRIGGER_RW)) ||
+ (bp_info->addr_mode & ~PPC_BREAKPOINT_MODE_MASK) ||
+ (bp_info->condition_mode &
+ ~(PPC_BREAKPOINT_CONDITION_MODE |
+ PPC_BREAKPOINT_CONDITION_BE_ALL)))
+ return -EINVAL;
+#if CONFIG_PPC_ADV_DEBUG_DVCS == 0
+ if (bp_info->condition_mode != PPC_BREAKPOINT_CONDITION_NONE)
+ return -EINVAL;
+#endif
+
+ if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_EXECUTE) {
+ if ((bp_info->trigger_type != PPC_BREAKPOINT_TRIGGER_EXECUTE) ||
+ (bp_info->condition_mode != PPC_BREAKPOINT_CONDITION_NONE))
+ return -EINVAL;
+ return set_intruction_bp(child, bp_info);
+ }
+ if (bp_info->addr_mode == PPC_BREAKPOINT_MODE_EXACT)
+ return set_dac(child, bp_info);
+
+#ifdef CONFIG_PPC_ADV_DEBUG_DAC_RANGE
+ return set_dac_range(child, bp_info);
+#else
+ return -EINVAL;
+#endif
+#else /* !CONFIG_PPC_ADV_DEBUG_DVCS */
+ /*
+ * We only support one data breakpoint
+ */
+ if (((bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_RW) == 0) ||
+ ((bp_info->trigger_type & ~PPC_BREAKPOINT_TRIGGER_RW) != 0) ||
+ (bp_info->trigger_type != PPC_BREAKPOINT_TRIGGER_WRITE) ||
+ (bp_info->addr_mode != PPC_BREAKPOINT_MODE_EXACT) ||
+ (bp_info->condition_mode != PPC_BREAKPOINT_CONDITION_NONE))
+ return -EINVAL;
+
+ if (child->thread.dabr)
+ return -ENOSPC;
+
+ if ((unsigned long)bp_info->addr >= TASK_SIZE)
+ return -EIO;
+
+ child->thread.dabr = (unsigned long)bp_info->addr;
+
+ return 1;
+#endif /* !CONFIG_PPC_ADV_DEBUG_DVCS */
+}
+
+static long ppc_del_hwdebug(struct task_struct *child, long addr, long data)
+{
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+ int rc;
+
+ if (data <= 4)
+ rc = del_instruction_bp(child, (int)data);
+ else
+ rc = del_dac(child, (int)data - 4);
+
+ if (!rc) {
+ if (!DBCR_ACTIVE_EVENTS(child->thread.dbcr0,
+ child->thread.dbcr1)) {
+ child->thread.dbcr0 &= ~DBCR0_IDM;
+ child->thread.regs->msr &= ~MSR_DE;
+ }
+ }
+ return rc;
+#else
+ if (data != 1)
+ return -EINVAL;
+ if (child->thread.dabr == 0)
+ return -ENOENT;
+
+ child->thread.dabr = 0;
+
+ return 0;
+#endif
+}
+
/*
* Here are the old "legacy" powerpc specific getregs/setregs ptrace calls,
* we mark them as obsolete now, they will be removed in a future version
@@ -932,13 +1328,77 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
break;
}
+ case PPC_PTRACE_GETHWDBGINFO: {
+ struct ppc_debug_info dbginfo;
+
+ dbginfo.version = 1;
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+ dbginfo.num_instruction_bps = CONFIG_PPC_ADV_DEBUG_IACS;
+ dbginfo.num_data_bps = CONFIG_PPC_ADV_DEBUG_DACS;
+ dbginfo.num_condition_regs = CONFIG_PPC_ADV_DEBUG_DVCS;
+ dbginfo.data_bp_alignment = 4;
+ dbginfo.sizeof_condition = 4;
+ dbginfo.features = PPC_DEBUG_FEATURE_INSN_BP_RANGE |
+ PPC_DEBUG_FEATURE_INSN_BP_MASK;
+#ifdef CONFIG_PPC_ADV_DEBUG_DAC_RANGE
+ dbginfo.features |=
+ PPC_DEBUG_FEATURE_DATA_BP_RANGE |
+ PPC_DEBUG_FEATURE_DATA_BP_MASK;
+#endif
+#else /* !CONFIG_PPC_ADV_DEBUG_REGS */
+ dbginfo.num_instruction_bps = 0;
+ dbginfo.num_data_bps = 1;
+ dbginfo.num_condition_regs = 0;
+#ifdef CONFIG_PPC64
+ dbginfo.data_bp_alignment = 8;
+#else
+ dbginfo.data_bp_alignment = 4;
+#endif
+ dbginfo.sizeof_condition = 0;
+ dbginfo.features = 0;
+#endif /* CONFIG_PPC_ADV_DEBUG_REGS */
+
+ if (!access_ok(VERIFY_WRITE, data,
+ sizeof(struct ppc_debug_info)))
+ return -EFAULT;
+ ret = __copy_to_user((struct ppc_debug_info __user *)data,
+ &dbginfo, sizeof(struct ppc_debug_info)) ?
+ -EFAULT : 0;
+ break;
+ }
+
+ case PPC_PTRACE_SETHWDEBUG: {
+ struct ppc_hw_breakpoint bp_info;
+
+ if (!access_ok(VERIFY_READ, data,
+ sizeof(struct ppc_hw_breakpoint)))
+ return -EFAULT;
+ ret = __copy_from_user(&bp_info,
+ (struct ppc_hw_breakpoint __user *)data,
+ sizeof(struct ppc_hw_breakpoint)) ?
+ -EFAULT : 0;
+ if (!ret)
+ ret = ppc_set_hwdebug(child, &bp_info);
+ break;
+ }
+
+ case PPC_PTRACE_DELHWDEBUG: {
+ ret = ppc_del_hwdebug(child, addr, data);
+ break;
+ }
+
case PTRACE_GET_DEBUGREG: {
ret = -EINVAL;
/* We only support one DABR and no IABRS at the moment */
if (addr > 0)
break;
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+ ret = put_user(child->thread.dac1,
+ (unsigned long __user *)data);
+#else
ret = put_user(child->thread.dabr,
(unsigned long __user *)data);
+#endif
break;
}
diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c
index 00b5078da9a..a0afb555a7c 100644
--- a/arch/powerpc/kernel/signal.c
+++ b/arch/powerpc/kernel/signal.c
@@ -140,17 +140,15 @@ static int do_signal_pending(sigset_t *oldset, struct pt_regs *regs)
return 0; /* no signals delivered */
}
+#ifndef CONFIG_PPC_ADV_DEBUG_REGS
/*
* Reenable the DABR before delivering the signal to
* user space. The DABR will have been cleared if it
* triggered inside the kernel.
*/
- if (current->thread.dabr) {
+ if (current->thread.dabr)
set_dabr(current->thread.dabr);
-#if defined(CONFIG_BOOKE)
- mtspr(SPRN_DBCR0, current->thread.dbcr0);
#endif
- }
if (is32) {
if (ka.sa.sa_flags & SA_SIGINFO)
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index d670429a160..266610119f6 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -1078,7 +1078,7 @@ int sys_debug_setcontext(struct ucontext __user *ctx,
int i;
unsigned char tmp;
unsigned long new_msr = regs->msr;
-#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
unsigned long new_dbcr0 = current->thread.dbcr0;
#endif
@@ -1087,13 +1087,17 @@ int sys_debug_setcontext(struct ucontext __user *ctx,
return -EFAULT;
switch (op.dbg_type) {
case SIG_DBG_SINGLE_STEPPING:
-#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
if (op.dbg_value) {
new_msr |= MSR_DE;
new_dbcr0 |= (DBCR0_IDM | DBCR0_IC);
} else {
- new_msr &= ~MSR_DE;
- new_dbcr0 &= ~(DBCR0_IDM | DBCR0_IC);
+ new_dbcr0 &= ~DBCR0_IC;
+ if (!DBCR_ACTIVE_EVENTS(new_dbcr0,
+ current->thread.dbcr1)) {
+ new_msr &= ~MSR_DE;
+ new_dbcr0 &= ~DBCR0_IDM;
+ }
}
#else
if (op.dbg_value)
@@ -1103,7 +1107,7 @@ int sys_debug_setcontext(struct ucontext __user *ctx,
#endif
break;
case SIG_DBG_BRANCH_TRACING:
-#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
return -EINVAL;
#else
if (op.dbg_value)
@@ -1124,7 +1128,7 @@ int sys_debug_setcontext(struct ucontext __user *ctx,
failure is a problem, anyway, and it's very unlikely unless
the user is really doing something wrong. */
regs->msr = new_msr;
-#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
current->thread.dbcr0 = new_dbcr0;
#endif
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 6c6093d67f3..1b16b9a3e49 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -265,8 +265,8 @@ void account_system_vtime(struct task_struct *tsk)
account_system_time(tsk, 0, delta, deltascaled);
else
account_idle_time(delta);
- per_cpu(cputime_last_delta, smp_processor_id()) = delta;
- per_cpu(cputime_scaled_last_delta, smp_processor_id()) = deltascaled;
+ __get_cpu_var(cputime_last_delta) = delta;
+ __get_cpu_var(cputime_scaled_last_delta) = deltascaled;
local_irq_restore(flags);
}
EXPORT_SYMBOL_GPL(account_system_vtime);
@@ -575,6 +575,8 @@ void timer_interrupt(struct pt_regs * regs)
trace_timer_interrupt_entry(regs);
+ __get_cpu_var(irq_stat).timer_irqs++;
+
/* Ensure a positive value is written to the decrementer, or else
* some CPUs will continuue to take decrementer exceptions */
set_dec(DECREMENTER_MAX);
@@ -935,8 +937,8 @@ static void register_decrementer_clockevent(int cpu)
*dec = decrementer_clockevent;
dec->cpumask = cpumask_of(cpu);
- printk(KERN_DEBUG "clockevent: %s mult[%x] shift[%d] cpu[%d]\n",
- dec->name, dec->mult, dec->shift, cpu);
+ printk_once(KERN_DEBUG "clockevent: %s mult[%x] shift[%d] cpu[%d]\n",
+ dec->name, dec->mult, dec->shift, cpu);
clockevents_register_device(dec);
}
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index d069ff8a7e0..696626a2e83 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -60,13 +60,13 @@
#endif
#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC)
-int (*__debugger)(struct pt_regs *regs);
-int (*__debugger_ipi)(struct pt_regs *regs);
-int (*__debugger_bpt)(struct pt_regs *regs);
-int (*__debugger_sstep)(struct pt_regs *regs);
-int (*__debugger_iabr_match)(struct pt_regs *regs);
-int (*__debugger_dabr_match)(struct pt_regs *regs);
-int (*__debugger_fault_handler)(struct pt_regs *regs);
+int (*__debugger)(struct pt_regs *regs) __read_mostly;
+int (*__debugger_ipi)(struct pt_regs *regs) __read_mostly;
+int (*__debugger_bpt)(struct pt_regs *regs) __read_mostly;
+int (*__debugger_sstep)(struct pt_regs *regs) __read_mostly;
+int (*__debugger_iabr_match)(struct pt_regs *regs) __read_mostly;
+int (*__debugger_dabr_match)(struct pt_regs *regs) __read_mostly;
+int (*__debugger_fault_handler)(struct pt_regs *regs) __read_mostly;
EXPORT_SYMBOL(__debugger);
EXPORT_SYMBOL(__debugger_ipi);
@@ -102,11 +102,11 @@ static inline void pmac_backlight_unblank(void) { }
int die(const char *str, struct pt_regs *regs, long err)
{
static struct {
- spinlock_t lock;
+ raw_spinlock_t lock;
u32 lock_owner;
int lock_owner_depth;
} die = {
- .lock = __SPIN_LOCK_UNLOCKED(die.lock),
+ .lock = __RAW_SPIN_LOCK_UNLOCKED(die.lock),
.lock_owner = -1,
.lock_owner_depth = 0
};
@@ -120,7 +120,7 @@ int die(const char *str, struct pt_regs *regs, long err)
if (die.lock_owner != raw_smp_processor_id()) {
console_verbose();
- spin_lock_irqsave(&die.lock, flags);
+ raw_spin_lock_irqsave(&die.lock, flags);
die.lock_owner = smp_processor_id();
die.lock_owner_depth = 0;
bust_spinlocks(1);
@@ -146,6 +146,11 @@ int die(const char *str, struct pt_regs *regs, long err)
#endif
printk("%s\n", ppc_md.name ? ppc_md.name : "");
+ sysfs_printk_last_file();
+ if (notify_die(DIE_OOPS, str, regs, err, 255,
+ SIGSEGV) == NOTIFY_STOP)
+ return 1;
+
print_modules();
show_regs(regs);
} else {
@@ -155,7 +160,7 @@ int die(const char *str, struct pt_regs *regs, long err)
bust_spinlocks(0);
die.lock_owner = -1;
add_taint(TAINT_DIE);
- spin_unlock_irqrestore(&die.lock, flags);
+ raw_spin_unlock_irqrestore(&die.lock, flags);
if (kexec_should_crash(current) ||
kexec_sr_activated(smp_processor_id()))
@@ -294,7 +299,7 @@ static inline int check_io_access(struct pt_regs *regs)
return 0;
}
-#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
/* On 4xx, the reason for the machine check or program exception
is in the ESR. */
#define get_reason(regs) ((regs)->dsisr)
@@ -478,6 +483,8 @@ void machine_check_exception(struct pt_regs *regs)
{
int recover = 0;
+ __get_cpu_var(irq_stat).mce_exceptions++;
+
/* See if any machine dependent calls. In theory, we would want
* to call the CPU first, and call the ppc_md. one if the CPU
* one returns a positive number. However there is existing code
@@ -960,6 +967,8 @@ void vsx_unavailable_exception(struct pt_regs *regs)
void performance_monitor_exception(struct pt_regs *regs)
{
+ __get_cpu_var(irq_stat).pmu_irqs++;
+
perf_irq(regs);
}
@@ -1024,10 +1033,69 @@ void SoftwareEmulation(struct pt_regs *regs)
}
#endif /* CONFIG_8xx */
-#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+static void handle_debug(struct pt_regs *regs, unsigned long debug_status)
+{
+ int changed = 0;
+ /*
+ * Determine the cause of the debug event, clear the
+ * event flags and send a trap to the handler. Torez
+ */
+ if (debug_status & (DBSR_DAC1R | DBSR_DAC1W)) {
+ dbcr_dac(current) &= ~(DBCR_DAC1R | DBCR_DAC1W);
+#ifdef CONFIG_PPC_ADV_DEBUG_DAC_RANGE
+ current->thread.dbcr2 &= ~DBCR2_DAC12MODE;
+#endif
+ do_send_trap(regs, mfspr(SPRN_DAC1), debug_status, TRAP_HWBKPT,
+ 5);
+ changed |= 0x01;
+ } else if (debug_status & (DBSR_DAC2R | DBSR_DAC2W)) {
+ dbcr_dac(current) &= ~(DBCR_DAC2R | DBCR_DAC2W);
+ do_send_trap(regs, mfspr(SPRN_DAC2), debug_status, TRAP_HWBKPT,
+ 6);
+ changed |= 0x01;
+ } else if (debug_status & DBSR_IAC1) {
+ current->thread.dbcr0 &= ~DBCR0_IAC1;
+ dbcr_iac_range(current) &= ~DBCR_IAC12MODE;
+ do_send_trap(regs, mfspr(SPRN_IAC1), debug_status, TRAP_HWBKPT,
+ 1);
+ changed |= 0x01;
+ } else if (debug_status & DBSR_IAC2) {
+ current->thread.dbcr0 &= ~DBCR0_IAC2;
+ do_send_trap(regs, mfspr(SPRN_IAC2), debug_status, TRAP_HWBKPT,
+ 2);
+ changed |= 0x01;
+ } else if (debug_status & DBSR_IAC3) {
+ current->thread.dbcr0 &= ~DBCR0_IAC3;
+ dbcr_iac_range(current) &= ~DBCR_IAC34MODE;
+ do_send_trap(regs, mfspr(SPRN_IAC3), debug_status, TRAP_HWBKPT,
+ 3);
+ changed |= 0x01;
+ } else if (debug_status & DBSR_IAC4) {
+ current->thread.dbcr0 &= ~DBCR0_IAC4;
+ do_send_trap(regs, mfspr(SPRN_IAC4), debug_status, TRAP_HWBKPT,
+ 4);
+ changed |= 0x01;
+ }
+ /*
+ * At the point this routine was called, the MSR(DE) was turned off.
+ * Check all other debug flags and see if that bit needs to be turned
+ * back on or not.
+ */
+ if (DBCR_ACTIVE_EVENTS(current->thread.dbcr0, current->thread.dbcr1))
+ regs->msr |= MSR_DE;
+ else
+ /* Make sure the IDM flag is off */
+ current->thread.dbcr0 &= ~DBCR0_IDM;
+
+ if (changed & 0x01)
+ mtspr(SPRN_DBCR0, current->thread.dbcr0);
+}
void __kprobes DebugException(struct pt_regs *regs, unsigned long debug_status)
{
+ current->thread.dbsr = debug_status;
+
/* Hack alert: On BookE, Branch Taken stops on the branch itself, while
* on server, it stops on the target of the branch. In order to simulate
* the server behaviour, we thus restart right away with a single step
@@ -1071,29 +1139,23 @@ void __kprobes DebugException(struct pt_regs *regs, unsigned long debug_status)
if (debugger_sstep(regs))
return;
- if (user_mode(regs))
- current->thread.dbcr0 &= ~(DBCR0_IC);
-
- _exception(SIGTRAP, regs, TRAP_TRACE, regs->nip);
- } else if (debug_status & (DBSR_DAC1R | DBSR_DAC1W)) {
- regs->msr &= ~MSR_DE;
-
if (user_mode(regs)) {
- current->thread.dbcr0 &= ~(DBSR_DAC1R | DBSR_DAC1W |
- DBCR0_IDM);
- } else {
- /* Disable DAC interupts */
- mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) & ~(DBSR_DAC1R |
- DBSR_DAC1W | DBCR0_IDM));
-
- /* Clear the DAC event */
- mtspr(SPRN_DBSR, (DBSR_DAC1R | DBSR_DAC1W));
+ current->thread.dbcr0 &= ~DBCR0_IC;
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+ if (DBCR_ACTIVE_EVENTS(current->thread.dbcr0,
+ current->thread.dbcr1))
+ regs->msr |= MSR_DE;
+ else
+ /* Make sure the IDM bit is off */
+ current->thread.dbcr0 &= ~DBCR0_IDM;
+#endif
}
- /* Setup and send the trap to the handler */
- do_dabr(regs, mfspr(SPRN_DAC1), debug_status);
- }
+
+ _exception(SIGTRAP, regs, TRAP_TRACE, regs->nip);
+ } else
+ handle_debug(regs, debug_status);
}
-#endif /* CONFIG_4xx || CONFIG_BOOKE */
+#endif /* CONFIG_PPC_ADV_DEBUG_REGS */
#if !defined(CONFIG_TAU_INT)
void TAUException(struct pt_regs *regs)
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-23 17:21:35 +0000