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i7core_edac: some fixes at memory error parser 

m->bank is not related to the memory bank but, instead, to the MCA Error
register bank. Fix it accordingly. While here, improves the comments for
Nehalem bank.

A later fix is needed, in order to get bank/rank information from MCA
error log.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2009-07-15 19:53:24 -03:00
parent 8a2f118e3a
commit f237fcf2b7
1 changed files with 14 additions and 8 deletions
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22
drivers/edac/i7core_edac.c
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@ -1322,12 +1322,13 @@ static void check_mc_test_err(struct mem_ctl_info *mci, u8 socket)
/*
* According with tables E-11 and E-12 of chapter E.3.3 of Intel 64 and IA-32
* Architectures Software Developer’s Manual Volume 3B.
* The MCA registers are the following ones:
* Nehalem are defined as family 0x06, model 0x1a
*
* The MCA registers used here are the following ones:
* struct mce field MCA Register
* m->status MSR_IA32_MC0_STATUS
* m->addr MSR_IA32_MC0_ADDR
* m->misc MSR_IA32_MC0_MISC
* m->mcgstatus MSR_IA32_MCG_STATUS
* m->status MSR_IA32_MC8_STATUS
* m->addr MSR_IA32_MC8_ADDR
* m->misc MSR_IA32_MC8_MISC
* In the case of Nehalem, the error information is masked at .status and .misc
* fields
*/
@ -1375,10 +1376,11 @@ static void i7core_mce_output_error(struct mem_ctl_info *mci,
err = "unknown";
}
/* FIXME: should convert addr into bank and rank information */
msg = kasprintf(GFP_ATOMIC,
"%s (addr = 0x%08llx Bank=0x%08x, Dimm=%d, Channel=%d, "
"syndrome=0x%08x total error count=%d Err=%d (%s))\n",
type, (long long) m->addr, m->bank, dimm, channel,
"%s (addr = 0x%08llx Dimm=%d, Channel=%d, "
"syndrome=0x%08x, count=%d Err=%d (%s))\n",
type, (long long) m->addr, dimm, channel,
syndrome, core_err_cnt,errnum, err);
debugf0("%s", msg);
@ -1447,6 +1449,10 @@ static int i7core_mce_check_error(void *priv, struct mce *mce)
if (((mce->status & 0xffff) >> 7) != 1)
return 0;
/* Bank 8 registers are the only ones that we know how to handle */
if (mce->bank != 8)
return 0;
spin_lock_irqsave(&pvt->mce_lock, flags);
if (pvt->mce_count < MCE_LOG_LEN) {
memcpy(&pvt->mce_entry[pvt->mce_count], mce, sizeof(*mce));