powerpc/eeh: Create PE for VFs

This creates PEs for VFs in the weak function pcibios_bus_add_device().
Those PEs for VFs are identified with newly introduced flag EEH_PE_VF
so that we treat them differently during EEH recovery.

Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Acked-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index 574ed49..0c551a2 100644 (file)
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -72,6 +72,7 @@ struct pci_dn;
 #define EEH_PE_PHB     (1 << 1)        /* PHB PE    */
 #define EEH_PE_DEVICE  (1 << 2)        /* Device PE */
 #define EEH_PE_BUS     (1 << 3)        /* Bus PE    */
+#define EEH_PE_VF      (1 << 4)        /* VF PE     */
 
 #define EEH_PE_ISOLATED                (1 << 0)        /* Isolated PE          */
 #define EEH_PE_RECOVERING      (1 << 1)        /* Recovering PE        */

diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c
index 9066afc..eea48d8 100644 (file)
--- a/arch/powerpc/kernel/eeh_pe.c
+++ b/arch/powerpc/kernel/eeh_pe.c
@@ -299,7 +299,10 @@ static struct eeh_pe *eeh_pe_get_parent(struct eeh_dev *edev)
         * EEH device already having associated PE, but
         * the direct parent EEH device doesn't have yet.
         */
-       pdn = pdn ? pdn->parent : NULL;
+       if (edev->physfn)
+               pdn = pci_get_pdn(edev->physfn);
+       else
+               pdn = pdn ? pdn->parent : NULL;
        while (pdn) {
                /* We're poking out of PCI territory */
                parent = pdn_to_eeh_dev(pdn);
@@ -382,7 +385,10 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
        }
 
        /* Create a new EEH PE */
-       pe = eeh_pe_alloc(edev->phb, EEH_PE_DEVICE);
+       if (edev->physfn)
+               pe = eeh_pe_alloc(edev->phb, EEH_PE_VF);
+       else
+               pe = eeh_pe_alloc(edev->phb, EEH_PE_DEVICE);
        if (!pe) {
                pr_err("%s: out of memory!\n", __func__);
                return -ENOMEM;

diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index 8119172..830526e 100644 (file)
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -1503,6 +1503,22 @@ static struct eeh_ops pnv_eeh_ops = {
        .restore_config         = pnv_eeh_restore_config
 };
 
+void pcibios_bus_add_device(struct pci_dev *pdev)
+{
+       struct pci_dn *pdn = pci_get_pdn(pdev);
+
+       if (!pdev->is_virtfn)
+               return;
+
+       /*
+        * The following operations will fail if VF's sysfs files
+        * aren't created or its resources aren't finalized.
+        */
+       eeh_add_device_early(pdn);
+       eeh_add_device_late(pdev);
+       eeh_sysfs_add_device(pdev);
+}
+
 /**
  * eeh_powernv_init - Register platform dependent EEH operations
  *