diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2001-02-23 09:02:58 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2001-02-23 09:02:58 +0000 |
| commit | f4ec799cbca6f6efb8fce24ebac99cc623744bed (patch) | |
| tree | 7721e1294d02b8fc11aa14e0d6c5e7965b88fb1f | |
| parent | 1f3d11ff42b9767b7308fd52422495e68a4bb6fa (diff) | |
Dump additional information when receiving a bus error.
| -rw-r--r-- | arch/mips64/sgi-ip27/ip27-berr.c | 43 |
1 files changed, 41 insertions, 2 deletions
diff --git a/arch/mips64/sgi-ip27/ip27-berr.c b/arch/mips64/sgi-ip27/ip27-berr.c index 87cd5fde9..3a777e169 100644 --- a/arch/mips64/sgi-ip27/ip27-berr.c +++ b/arch/mips64/sgi-ip27/ip27-berr.c @@ -64,9 +64,43 @@ void do_ibe(struct pt_regs *regs) 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 +111,12 @@ void do_dbe(struct pt_regs *regs) 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); |