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[IA64] Add mca recovery failure messages

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When the mca recovery code encounters a condition that makes
the MCA non-recoverable, print the reason it could not recover.
This will make it easier to identify why the recovery code did
not recover.

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Russ Anderson 2006-04-27 10:07:08 -05:00 committed by Tony Luck
parent cda3d4a069
commit 189979619f
1 changed files with 36 additions and 18 deletions
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54
arch/ia64/kernel/mca_drv.c
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@ -62,6 +62,11 @@ typedef enum {
ISOLATE_NONE
} isolate_status_t;
typedef enum {
MCA_NOT_RECOVERED = 0,
MCA_RECOVERED = 1
} recovery_status_t;
/*
* This pool keeps pointers to the section part of SAL error record
*/
@ -71,6 +76,18 @@ static struct {
int max_idx; /* Maximum index of section pointer list pool */
} slidx_pool;
static int
fatal_mca(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vprintk(fmt, args);
va_end(args);
return MCA_NOT_RECOVERED;
}
/**
* mca_page_isolate - isolate a poisoned page in order not to use it later
* @paddr: poisoned memory location
@ -424,7 +441,7 @@ recover_from_read_error(slidx_table_t *slidx,
/* Is target address valid? */
if (!pbci->tv)
return 0;
return fatal_mca(KERN_ALERT "MCA: target address not valid\n");
/*
* cpu read or memory-mapped io read
@ -442,7 +459,7 @@ recover_from_read_error(slidx_table_t *slidx,
/* Is minstate valid? */
if (!peidx_bottom(peidx) || !(peidx_bottom(peidx)->valid.minstate))
return 0;
return fatal_mca(KERN_ALERT "MCA: minstate not valid\n");
psr1 =(struct ia64_psr *)&(peidx_minstate_area(peidx)->pmsa_ipsr);
psr2 =(struct ia64_psr *)&(peidx_minstate_area(peidx)->pmsa_xpsr);
@ -476,12 +493,13 @@ recover_from_read_error(slidx_table_t *slidx,
psr2->bn = 1;
psr2->i = 0;
return 1;
return MCA_RECOVERED;
}
}
return 0;
return fatal_mca(KERN_ALERT "MCA: kernel context not recovered,"
" iip 0x%lx\n", pmsa->pmsa_iip);
}
/**
@ -567,13 +585,13 @@ recover_from_processor_error(int platform, slidx_table_t *slidx,
* The machine check is corrected.
*/
if (psp->cm == 1)
return 1;
return MCA_RECOVERED;
/*
* The error was not contained. Software must be reset.
*/
if (psp->us || psp->ci == 0)
return 0;
return fatal_mca(KERN_ALERT "MCA: error not contained\n");
/*
* The cache check and bus check bits have four possible states
@ -584,20 +602,22 @@ recover_from_processor_error(int platform, slidx_table_t *slidx,
* 1 1 Memory error, attempt recovery
*/
if (psp->bc == 0 || pbci == NULL)
return 0;
return fatal_mca(KERN_ALERT "MCA: No bus check\n");
/*
* Sorry, we cannot handle so many.
*/
if (peidx_bus_check_num(peidx) > 1)
return 0;
return fatal_mca(KERN_ALERT "MCA: Too many bus checks\n");
/*
* Well, here is only one bus error.
*/
if (pbci->ib || pbci->cc)
return 0;
if (pbci->ib)
return fatal_mca(KERN_ALERT "MCA: Internal Bus error\n");
if (pbci->cc)
return fatal_mca(KERN_ALERT "MCA: Cache-cache error\n");
if (pbci->eb && pbci->bsi > 0)
return 0;
return fatal_mca(KERN_ALERT "MCA: External bus check fatal status\n");
/*
* This is a local MCA and estimated as recoverble external bus error.
@ -609,7 +629,7 @@ recover_from_processor_error(int platform, slidx_table_t *slidx,
/*
* On account of strange SAL error record, we cannot recover.
*/
return 0;
return fatal_mca(KERN_ALERT "MCA: Strange SAL record\n");
}
/**
@ -638,12 +658,10 @@ mca_try_to_recover(void *rec, struct ia64_sal_os_state *sos)
/* Now, OS can recover when there is one processor error section */
if (n_proc_err > 1)
return 0;
else if (n_proc_err == 0) {
return fatal_mca(KERN_ALERT "MCA: Too Many Errors\n");
else if (n_proc_err == 0)
/* Weird SAL record ... We need not to recover */
return 1;
}
return fatal_mca(KERN_ALERT "MCA: Weird SAL record\n");
/* Make index of processor error section */
mca_make_peidx((sal_log_processor_info_t*)
@ -654,7 +672,7 @@ mca_try_to_recover(void *rec, struct ia64_sal_os_state *sos)
/* Check whether MCA is global or not */
if (is_mca_global(&peidx, &pbci, sos))
return 0;
return fatal_mca(KERN_ALERT "MCA: global MCA\n");
/* Try to recover a processor error */
return recover_from_processor_error(platform_err, &slidx, &peidx,