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Commit 79cd9520 authored by Gavin Shan's avatar Gavin Shan Committed by Michael Ellerman
Browse files

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



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: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 0f36db77

arch/powerpc/platforms/powernv/eeh-powernv.c

+9 −1
Original line number Original line Diff line number Diff line
@@ -1394,11 +1394,19 @@ static int pnv_eeh_next_error(struct eeh_pe **pe) 
			 */

			 */

			if (pnv_eeh_get_pe(hose,

			if (pnv_eeh_get_pe(hose,

				be64_to_cpu(frozen_pe_no), pe)) {

				be64_to_cpu(frozen_pe_no), pe)) {

				/* Try best to clear it */

				pr_info("EEH: Clear non-existing PHB#%x-PE#%llx\n",

				pr_info("EEH: Clear non-existing PHB#%x-PE#%llx\n",

					hose->global_number, be64_to_cpu(frozen_pe_no));

					hose->global_number, be64_to_cpu(frozen_pe_no));

				pr_info("EEH: PHB location: %s\n",

				pr_info("EEH: PHB location: %s\n",

					eeh_pe_loc_get(phb_pe));

					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,

				opal_pci_eeh_freeze_clear(phb->opal_id,

					frozen_pe_no,

					frozen_pe_no,

					OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);

					OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);