diff options
Diffstat (limited to 'arch/blackfin/kernel/traps.c')
| -rw-r--r-- | arch/blackfin/kernel/traps.c | 54 |
1 files changed, 46 insertions, 8 deletions
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c index 21a55ef19cbd..4be5ff0be60f 100644 --- a/arch/blackfin/kernel/traps.c +++ b/arch/blackfin/kernel/traps.c @@ -433,6 +433,36 @@ asmlinkage void trap_c(struct pt_regs *fp) /* 0x3D - Reserved, Caught by default */ /* 0x3E - Reserved, Caught by default */ /* 0x3F - Reserved, Caught by default */ + case VEC_HWERR: + info.si_code = BUS_ADRALN; + sig = SIGBUS; + switch (fp->seqstat & SEQSTAT_HWERRCAUSE) { + /* System MMR Error */ + case (SEQSTAT_HWERRCAUSE_SYSTEM_MMR): + info.si_code = BUS_ADRALN; + sig = SIGBUS; + printk(KERN_NOTICE HWC_x2(KERN_NOTICE)); + break; + /* External Memory Addressing Error */ + case (SEQSTAT_HWERRCAUSE_EXTERN_ADDR): + info.si_code = BUS_ADRERR; + sig = SIGBUS; + printk(KERN_NOTICE HWC_x3(KERN_NOTICE)); + break; + /* Performance Monitor Overflow */ + case (SEQSTAT_HWERRCAUSE_PERF_FLOW): + printk(KERN_NOTICE HWC_x12(KERN_NOTICE)); + break; + /* RAISE 5 instruction */ + case (SEQSTAT_HWERRCAUSE_RAISE_5): + printk(KERN_NOTICE HWC_x18(KERN_NOTICE)); + break; + default: /* Reserved */ + printk(KERN_NOTICE HWC_default(KERN_NOTICE)); + break; + } + CHK_DEBUGGER_TRAP(); + break; default: info.si_code = TRAP_ILLTRAP; sig = SIGTRAP; @@ -447,7 +477,11 @@ asmlinkage void trap_c(struct pt_regs *fp) if (sig != SIGTRAP) { unsigned long stack; dump_bfin_process(fp); - dump_bfin_mem((void *)fp->retx); + /* Is it an interrupt, or an exception? */ + if (trapnr == VEC_HWERR) + dump_bfin_mem((void *)fp->pc); + else + dump_bfin_mem((void *)fp->retx); show_regs(fp); /* Print out the trace buffer if it makes sense */ @@ -672,12 +706,11 @@ void dump_bfin_mem(void *retaddr) * context, which should mean an oops is happening */ if (oops_in_progress && x >= 0x0040 && x <= 0x0047 && i <= 0) - panic("\n\nWARNING : You should reconfigure" + printk(KERN_EMERG "\n" + KERN_EMERG "WARNING : You should reconfigure" " the kernel to turn on\n" - " 'Hardware error interrupt" - " debugging'\n" - " The rest of this error" - " is meanless\n"); + KERN_EMERG " 'Hardware error interrupt debugging'\n" + KERN_EMERG " The rest of this error is meanless\n"); #endif if (i == (unsigned int)retaddr) printk("[%04x]", x); @@ -698,6 +731,10 @@ void show_regs(struct pt_regs *fp) printk(KERN_NOTICE "\n" KERN_NOTICE "SEQUENCER STATUS:\n"); printk(KERN_NOTICE " SEQSTAT: %08lx IPEND: %04lx SYSCFG: %04lx\n", (long)fp->seqstat, fp->ipend, fp->syscfg); + printk(KERN_NOTICE " HWERRCAUSE: 0x%lx\n", + (fp->seqstat & SEQSTAT_HWERRCAUSE) >> 14); + printk(KERN_NOTICE " EXCAUSE : 0x%lx\n", + fp->seqstat & SEQSTAT_EXCAUSE); decode_address(buf, fp->rete); printk(KERN_NOTICE " RETE: %s\n", buf); @@ -708,9 +745,10 @@ void show_regs(struct pt_regs *fp) decode_address(buf, fp->rets); printk(KERN_NOTICE " RETS: %s\n", buf); decode_address(buf, fp->pc); - printk(KERN_NOTICE " PC: %s\n", buf); + printk(KERN_NOTICE " PC : %s\n", buf); - if ((long)fp->seqstat & SEQSTAT_EXCAUSE) { + if (((long)fp->seqstat & SEQSTAT_EXCAUSE) && + (((long)fp->seqstat & SEQSTAT_EXCAUSE) != VEC_HWERR)) { decode_address(buf, bfin_read_DCPLB_FAULT_ADDR()); printk(KERN_NOTICE "DCPLB_FAULT_ADDR: %s\n", buf); decode_address(buf, bfin_read_ICPLB_FAULT_ADDR()); |