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Diffstat (limited to 'arch/sparc64/kernel/traps.c')
-rw-r--r--arch/sparc64/kernel/traps.c89
1 files changed, 63 insertions, 26 deletions
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index bd30ecba563..81ccd22e78d 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -10,6 +10,7 @@
#include <linux/module.h>
#include <linux/sched.h>
+#include <linux/linkage.h>
#include <linux/kernel.h>
#include <linux/signal.h>
#include <linux/smp.h>
@@ -37,8 +38,10 @@
#include <asm/timer.h>
#include <asm/head.h>
#include <asm/prom.h>
+#include <asm/memctrl.h>
#include "entry.h"
+#include "kstack.h"
/* When an irrecoverable trap occurs at tl > 0, the trap entry
* code logs the trap state registers at every level in the trap
@@ -127,6 +130,56 @@ void do_BUG(const char *file, int line)
}
#endif
+static DEFINE_SPINLOCK(dimm_handler_lock);
+static dimm_printer_t dimm_handler;
+
+static int sprintf_dimm(int synd_code, unsigned long paddr, char *buf, int buflen)
+{
+ unsigned long flags;
+ int ret = -ENODEV;
+
+ spin_lock_irqsave(&dimm_handler_lock, flags);
+ if (dimm_handler) {
+ ret = dimm_handler(synd_code, paddr, buf, buflen);
+ } else if (tlb_type == spitfire) {
+ if (prom_getunumber(synd_code, paddr, buf, buflen) == -1)
+ ret = -EINVAL;
+ else
+ ret = 0;
+ } else
+ ret = -ENODEV;
+ spin_unlock_irqrestore(&dimm_handler_lock, flags);
+
+ return ret;
+}
+
+int register_dimm_printer(dimm_printer_t func)
+{
+ unsigned long flags;
+ int ret = 0;
+
+ spin_lock_irqsave(&dimm_handler_lock, flags);
+ if (!dimm_handler)
+ dimm_handler = func;
+ else
+ ret = -EEXIST;
+ spin_unlock_irqrestore(&dimm_handler_lock, flags);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(register_dimm_printer);
+
+void unregister_dimm_printer(dimm_printer_t func)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&dimm_handler_lock, flags);
+ if (dimm_handler == func)
+ dimm_handler = NULL;
+ spin_unlock_irqrestore(&dimm_handler_lock, flags);
+}
+EXPORT_SYMBOL_GPL(unregister_dimm_printer);
+
void spitfire_insn_access_exception(struct pt_regs *regs, unsigned long sfsr, unsigned long sfar)
{
siginfo_t info;
@@ -289,10 +342,7 @@ void sun4v_data_access_exception_tl1(struct pt_regs *regs, unsigned long addr, u
}
#ifdef CONFIG_PCI
-/* This is really pathetic... */
-extern volatile int pci_poke_in_progress;
-extern volatile int pci_poke_cpu;
-extern volatile int pci_poke_faulted;
+#include "pci_impl.h"
#endif
/* When access exceptions happen, we must do this. */
@@ -374,8 +424,7 @@ static void spitfire_log_udb_syndrome(unsigned long afar, unsigned long udbh, un
if (udbl & bit) {
scode = ecc_syndrome_table[udbl & 0xff];
- if (prom_getunumber(scode, afar,
- memmod_str, sizeof(memmod_str)) == -1)
+ if (sprintf_dimm(scode, afar, memmod_str, sizeof(memmod_str)) < 0)
p = syndrome_unknown;
else
p = memmod_str;
@@ -386,8 +435,7 @@ static void spitfire_log_udb_syndrome(unsigned long afar, unsigned long udbh, un
if (udbh & bit) {
scode = ecc_syndrome_table[udbh & 0xff];
- if (prom_getunumber(scode, afar,
- memmod_str, sizeof(memmod_str)) == -1)
+ if (sprintf_dimm(scode, afar, memmod_str, sizeof(memmod_str)) < 0)
p = syndrome_unknown;
else
p = memmod_str;
@@ -1060,8 +1108,6 @@ static const char *cheetah_get_string(unsigned long bit)
return "???";
}
-extern int chmc_getunumber(int, unsigned long, char *, int);
-
static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *info,
unsigned long afsr, unsigned long afar, int recoverable)
{
@@ -1103,7 +1149,7 @@ static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *in
syndrome = (afsr & CHAFSR_E_SYNDROME) >> CHAFSR_E_SYNDROME_SHIFT;
syndrome = cheetah_ecc_syntab[syndrome];
- ret = chmc_getunumber(syndrome, afar, unum, sizeof(unum));
+ ret = sprintf_dimm(syndrome, afar, unum, sizeof(unum));
if (ret != -1)
printk("%s" "ERROR(%d): AFAR E-syndrome [%s]\n",
(recoverable ? KERN_WARNING : KERN_CRIT),
@@ -1114,7 +1160,7 @@ static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *in
syndrome = (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT;
syndrome = cheetah_mtag_syntab[syndrome];
- ret = chmc_getunumber(syndrome, afar, unum, sizeof(unum));
+ ret = sprintf_dimm(syndrome, afar, unum, sizeof(unum));
if (ret != -1)
printk("%s" "ERROR(%d): AFAR M-syndrome [%s]\n",
(recoverable ? KERN_WARNING : KERN_CRIT),
@@ -1777,7 +1823,7 @@ static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent,
pfx,
ent->err_raddr, ent->err_size, ent->err_cpu);
- __show_regs(regs);
+ show_regs(regs);
if ((cnt = atomic_read(ocnt)) != 0) {
atomic_set(ocnt, 0);
@@ -2115,14 +2161,12 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp)
struct pt_regs *regs;
unsigned long pc;
- /* Bogus frame pointer? */
- if (fp < (thread_base + sizeof(struct thread_info)) ||
- fp >= (thread_base + THREAD_SIZE))
+ if (!kstack_valid(tp, fp))
break;
sf = (struct sparc_stackf *) fp;
regs = (struct pt_regs *) (sf + 1);
- if ((regs->magic & ~0x1ff) == PT_REGS_MAGIC) {
+ if (kstack_is_trap_frame(tp, regs)) {
if (!(regs->tstate & TSTATE_PRIV))
break;
pc = regs->tpc;
@@ -2177,7 +2221,6 @@ static inline struct reg_window *kernel_stack_up(struct reg_window *rw)
void die_if_kernel(char *str, struct pt_regs *regs)
{
static int die_counter;
- extern void smp_report_regs(void);
int count = 0;
/* Amuse the user. */
@@ -2190,7 +2233,7 @@ void die_if_kernel(char *str, struct pt_regs *regs)
printk("%s(%d): %s [#%d]\n", current->comm, task_pid_nr(current), str, ++die_counter);
notify_die(DIE_OOPS, str, regs, 0, 255, SIGSEGV);
__asm__ __volatile__("flushw");
- __show_regs(regs);
+ show_regs(regs);
add_taint(TAINT_DIE);
if (regs->tstate & TSTATE_PRIV) {
struct reg_window *rw = (struct reg_window *)
@@ -2215,11 +2258,6 @@ void die_if_kernel(char *str, struct pt_regs *regs)
}
user_instruction_dump ((unsigned int __user *) regs->tpc);
}
-#if 0
-#ifdef CONFIG_SMP
- smp_report_regs();
-#endif
-#endif
if (regs->tstate & TSTATE_PRIV)
do_exit(SIGKILL);
do_exit(SIGSEGV);
@@ -2230,7 +2268,6 @@ void die_if_kernel(char *str, struct pt_regs *regs)
extern int handle_popc(u32 insn, struct pt_regs *regs);
extern int handle_ldf_stq(u32 insn, struct pt_regs *regs);
-extern int vis_emul(struct pt_regs *, unsigned int);
void do_illegal_instruction(struct pt_regs *regs)
{
@@ -2460,7 +2497,7 @@ struct trap_per_cpu trap_block[NR_CPUS];
/* This can get invoked before sched_init() so play it super safe
* and use hard_smp_processor_id().
*/
-void init_cur_cpu_trap(struct thread_info *t)
+void notrace init_cur_cpu_trap(struct thread_info *t)
{
int cpu = hard_smp_processor_id();
struct trap_per_cpu *p = &trap_block[cpu];
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-10-23 05:37:41 +0000