powerpc/powernv: Add PE to its own PELTV

We need add PE to its own PELTV. Otherwise, the errors originated
from the PE might contribute to other PEs. In the result, we can't
clear up the error successfully even we're checking and clearing
errors during access to PCI config space.

Cc: stable@vger.kernel.org
Reported-by: kalshett@in.ibm.com
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index c639af7..198566e 100644 (file)
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -163,13 +163,23 @@ static int pnv_ioda_configure_pe(struct pnv_phb *phb, struct pnv_ioda_pe *pe)
                rid_end = pe->rid + 1;
        }
 
-       /* Associate PE in PELT */
+       /*
+        * Associate PE in PELT. We need add the PE into the
+        * corresponding PELT-V as well. Otherwise, the error
+        * originated from the PE might contribute to other
+        * PEs.
+        */
        rc = opal_pci_set_pe(phb->opal_id, pe->pe_number, pe->rid,
                             bcomp, dcomp, fcomp, OPAL_MAP_PE);
        if (rc) {
                pe_err(pe, "OPAL error %ld trying to setup PELT table\n", rc);
                return -ENXIO;
        }
+
+       rc = opal_pci_set_peltv(phb->opal_id, pe->pe_number,
+                               pe->pe_number, OPAL_ADD_PE_TO_DOMAIN);
+       if (rc)
+               pe_warn(pe, "OPAL error %d adding self to PELTV\n", rc);
        opal_pci_eeh_freeze_clear(phb->opal_id, pe->pe_number,
                                  OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);