patch-2.4.10 linux/arch/mips64/sgi-ip27/ip27-berr.c
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- Lines: 125
- Date:
Sun Sep 9 10:43:02 2001
- Orig file:
v2.4.9/linux/arch/mips64/sgi-ip27/ip27-berr.c
- Orig date:
Sun Jul 9 22:18:16 2000
diff -u --recursive --new-file v2.4.9/linux/arch/mips64/sgi-ip27/ip27-berr.c linux/arch/mips64/sgi-ip27/ip27-berr.c
@@ -8,6 +8,9 @@
*/
#include <linux/init.h>
#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include <asm/module.h>
#include <asm/sn/addrs.h>
#include <asm/sn/arch.h>
#include <asm/sn/sn0/hub.h>
@@ -43,16 +46,43 @@
return 0;
}
+extern spinlock_t modlist_lock;
+
static inline unsigned long
search_dbe_table(unsigned long addr)
{
unsigned long ret;
+#ifndef CONFIG_MODULES
/* There is only the kernel to search. */
ret = search_one_table(__start___dbe_table, __stop___dbe_table-1, addr);
- if (ret) return ret;
-
- return 0;
+ return ret;
+#else
+ unsigned long flags;
+
+ /* The kernel is the last "module" -- no need to treat it special. */
+ struct module *mp;
+ struct archdata *ap;
+
+ spin_lock_irqsave(&modlist_lock, flags);
+ for (mp = module_list; mp != NULL; mp = mp->next) {
+ if (!mod_member_present(mp, archdata_end) ||
+ !mod_archdata_member_present(mp, struct archdata,
+ dbe_table_end))
+ continue;
+ ap = (struct archdata *)(mod->archdata_start);
+
+ if (ap->dbe_table_start == NULL ||
+ !(mp->flags & (MOD_RUNNING | MOD_INITIALIZING)))
+ continue;
+ ret = search_one_table(ap->dbe_table_start,
+ ap->dbe_table_end - 1, addr);
+ if (ret)
+ break;
+ }
+ spin_unlock_irqrestore(&modlist_lock, flags);
+ return ret;
+#endif
}
void do_ibe(struct pt_regs *regs)
@@ -64,9 +94,43 @@
while(1);
}
+static void dump_hub_information(unsigned long errst0, unsigned long errst1)
+{
+ static char *err_type[2][8] = {
+ { NULL, "Uncached Partial Read PRERR", "DERR", "Read Timeout",
+ NULL, NULL, NULL, NULL },
+ { "WERR", "Uncached Partial Write", "PWERR", "Write Timeout",
+ NULL, NULL, NULL, NULL }
+ };
+ int wrb = errst1 & PI_ERR_ST1_WRBRRB_MASK;
+
+ if (!(errst0 & PI_ERR_ST0_VALID_MASK)) {
+ printk("Hub does not contain valid error information\n");
+ return;
+ }
+
+
+ printk("Hub has valid error information:\n");
+ if (errst0 & PI_ERR_ST0_OVERRUN_MASK)
+ printk("Overrun is set. Error stack may contain additional "
+ "information.\n");
+ printk("Hub error address is %08lx\n",
+ (errst0 & PI_ERR_ST0_ADDR_MASK) >> (PI_ERR_ST0_ADDR_SHFT - 3));
+ printk("Incoming message command 0x%lx\n",
+ (errst0 & PI_ERR_ST0_CMD_MASK) >> PI_ERR_ST0_CMD_SHFT);
+ printk("Supplemental field of incoming message is 0x%lx\n",
+ (errst0 & PI_ERR_ST0_SUPPL_MASK) >> PI_ERR_ST0_SUPPL_SHFT);
+ printk("T5 Rn (for RRB only) is 0x%lx\n",
+ (errst0 & PI_ERR_ST0_REQNUM_MASK) >> PI_ERR_ST0_REQNUM_SHFT);
+ printk("Error type is %s\n", err_type[wrb]
+ [(errst0 & PI_ERR_ST0_TYPE_MASK) >> PI_ERR_ST0_TYPE_SHFT]
+ ? : "invalid");
+}
+
void do_dbe(struct pt_regs *regs)
{
- unsigned long fixup;
+ unsigned long fixup, errst0, errst1;
+ int cpu = LOCAL_HUB_L(PI_CPU_NUM);
fixup = search_dbe_table(regs->cp0_epc);
if (fixup) {
@@ -77,7 +141,12 @@
return;
}
- printk("Got dbe at 0x%lx\n", regs->cp0_epc);
+ printk("Slice %c got dbe at 0x%lx\n", 'A' + cpu, regs->cp0_epc);
+ printk("Hub information:\n");
+ printk("ERR_INT_PEND = 0x%06lx\n", LOCAL_HUB_L(PI_ERR_INT_PEND));
+ errst0 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS0_B : PI_ERR_STATUS0_A);
+ errst1 = LOCAL_HUB_L(cpu ? PI_ERR_STATUS1_B : PI_ERR_STATUS1_A);
+ dump_hub_information(errst0, errst1);
show_regs(regs);
dump_tlb_all();
while(1);
@@ -95,7 +164,7 @@
set_except_vector(7, handle_dbe);
LOCAL_HUB_S(PI_ERR_INT_PEND,
- cpu ? PI_ERR_CLEAR_ALL_A : PI_ERR_CLEAR_ALL_B);
+ cpu ? PI_ERR_CLEAR_ALL_B : PI_ERR_CLEAR_ALL_A);
LOCAL_HUB_S(PI_ERR_INT_MASK_A + cpuoff, 0);
LOCAL_HUB_S(PI_ERR_STACK_ADDR_A + cpuoff, 0);
LOCAL_HUB_S(PI_ERR_STACK_SIZE, 0); /* Disable error stack */
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