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powerpc/eeh: Dump PHB diag-data for non-existing PE

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When detecting EEH error on non-existing PE, including the reserved
one, the PE is simply unfrozen without dumping the PHB diag-data,
which is useful for locating the root cause of the EEH error. The
patch dumps the PHB diag-data when non-existing PE reports error.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Gavin Shan 2015-05-12 17:05:32 +10:00 committed by Michael Ellerman
parent 0f36db7764
commit 79cd952000
1 changed files with 9 additions and 1 deletions
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10
arch/powerpc/platforms/powernv/eeh-powernv.c
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@ -1394,11 +1394,19 @@ static int pnv_eeh_next_error(struct eeh_pe **pe)
*/
if (pnv_eeh_get_pe(hose,
be64_to_cpu(frozen_pe_no), pe)) {
/* Try best to clear it */
pr_info("EEH: Clear non-existing PHB#%x-PE#%llx\n",
hose->global_number, be64_to_cpu(frozen_pe_no));
pr_info("EEH: PHB location: %s\n",
eeh_pe_loc_get(phb_pe));
/* Dump PHB diag-data */
rc = opal_pci_get_phb_diag_data2(phb->opal_id,
phb->diag.blob, PNV_PCI_DIAG_BUF_SIZE);
if (rc == OPAL_SUCCESS)
pnv_pci_dump_phb_diag_data(hose,
phb->diag.blob);
/* Try best to clear it */
opal_pci_eeh_freeze_clear(phb->opal_id,
frozen_pe_no,
OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);