powerpc/powernv: Drop PHB operation set_option()

The patch drops PHB EEH operation set_option() and merges its
logic to eeh_ops::set_option().

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c
index 645951639b0169040ebf6bb65eac11ffaecdd40e..349c0830f535a999e7afd246b4810e97d3cdc48f 100644 (file)
--- a/arch/powerpc/platforms/powernv/eeh-ioda.c
+++ b/arch/powerpc/platforms/powernv/eeh-ioda.c
@@ -34,89 +34,6 @@
 #include "powernv.h"
 #include "pci.h"
 
-/**
- * ioda_eeh_set_option - Set EEH operation or I/O setting
- * @pe: EEH PE
- * @option: options
- *
- * Enable or disable EEH option for the indicated PE. The
- * function also can be used to enable I/O or DMA for the
- * PE.
- */
-static int ioda_eeh_set_option(struct eeh_pe *pe, int option)
-{
-       struct pci_controller *hose = pe->phb;
-       struct pnv_phb *phb = hose->private_data;
-       bool freeze_pe = false;
-       int enable, ret = 0;
-       s64 rc;
-
-       /* Check on PE number */
-       if (pe->addr < 0 || pe->addr >= phb->ioda.total_pe) {
-               pr_err("%s: PE address %x out of range [0, %x] "
-                      "on PHB#%x\n",
-                       __func__, pe->addr, phb->ioda.total_pe,
-                       hose->global_number);
-               return -EINVAL;
-       }
-
-       switch (option) {
-       case EEH_OPT_DISABLE:
-               return -EPERM;
-       case EEH_OPT_ENABLE:
-               return 0;
-       case EEH_OPT_THAW_MMIO:
-               enable = OPAL_EEH_ACTION_CLEAR_FREEZE_MMIO;
-               break;
-       case EEH_OPT_THAW_DMA:
-               enable = OPAL_EEH_ACTION_CLEAR_FREEZE_DMA;
-               break;
-       case EEH_OPT_FREEZE_PE:
-               freeze_pe = true;
-               enable = OPAL_EEH_ACTION_SET_FREEZE_ALL;
-               break;
-       default:
-               pr_warn("%s: Invalid option %d\n",
-                       __func__, option);
-               return -EINVAL;
-       }
-
-       /* If PHB supports compound PE, to handle it */
-       if (freeze_pe) {
-               if (phb->freeze_pe) {
-                       phb->freeze_pe(phb, pe->addr);
-               } else {
-                       rc = opal_pci_eeh_freeze_set(phb->opal_id,
-                                                    pe->addr,
-                                                    enable);
-                       if (rc != OPAL_SUCCESS) {
-                               pr_warn("%s: Failure %lld freezing "
-                                       "PHB#%x-PE#%x\n",
-                                       __func__, rc,
-                                       phb->hose->global_number, pe->addr);
-                               ret = -EIO;
-                       }
-               }
-       } else {
-               if (phb->unfreeze_pe) {
-                       ret = phb->unfreeze_pe(phb, pe->addr, enable);
-               } else {
-                       rc = opal_pci_eeh_freeze_clear(phb->opal_id,
-                                                      pe->addr,
-                                                      enable);
-                       if (rc != OPAL_SUCCESS) {
-                               pr_warn("%s: Failure %lld enable %d "
-                                       "for PHB#%x-PE#%x\n",
-                                       __func__, rc, option,
-                                       phb->hose->global_number, pe->addr);
-                               ret = -EIO;
-                       }
-               }
-       }
-
-       return ret;
-}
-
 static void ioda_eeh_phb_diag(struct eeh_pe *pe)
 {
        struct pnv_phb *phb = pe->phb->private_data;
@@ -869,7 +786,6 @@ static int ioda_eeh_next_error(struct eeh_pe **pe)
 }
 
 struct pnv_eeh_ops ioda_eeh_ops = {
-       .set_option             = ioda_eeh_set_option,
        .get_state              = ioda_eeh_get_state,
        .reset                  = ioda_eeh_reset,
        .next_error             = ioda_eeh_next_error

diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index a7087f4a739a5ec96a20015cc768202b64d5b002..2429a23d4802caa477fa5feb4efd8b8836cc8315 100644 (file)
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -407,14 +407,61 @@ static int pnv_eeh_set_option(struct eeh_pe *pe, int option)
 {
        struct pci_controller *hose = pe->phb;
        struct pnv_phb *phb = hose->private_data;
-       int ret = -EEXIST;
+       bool freeze_pe = false;
+       int opt, ret = 0;
+       s64 rc;
 
-       /*
-        * What we need do is pass it down for hardware
-        * implementation to handle it.
-        */
-       if (phb->eeh_ops && phb->eeh_ops->set_option)
-               ret = phb->eeh_ops->set_option(pe, option);
+       /* Sanity check on option */
+       switch (option) {
+       case EEH_OPT_DISABLE:
+               return -EPERM;
+       case EEH_OPT_ENABLE:
+               return 0;
+       case EEH_OPT_THAW_MMIO:
+               opt = OPAL_EEH_ACTION_CLEAR_FREEZE_MMIO;
+               break;
+       case EEH_OPT_THAW_DMA:
+               opt = OPAL_EEH_ACTION_CLEAR_FREEZE_DMA;
+               break;
+       case EEH_OPT_FREEZE_PE:
+               freeze_pe = true;
+               opt = OPAL_EEH_ACTION_SET_FREEZE_ALL;
+               break;
+       default:
+               pr_warn("%s: Invalid option %d\n", __func__, option);
+               return -EINVAL;
+       }
+
+       /* If PHB supports compound PE, to handle it */
+       if (freeze_pe) {
+               if (phb->freeze_pe) {
+                       phb->freeze_pe(phb, pe->addr);
+               } else {
+                       rc = opal_pci_eeh_freeze_set(phb->opal_id,
+                                                    pe->addr, opt);
+                       if (rc != OPAL_SUCCESS) {
+                               pr_warn("%s: Failure %lld freezing "
+                                       "PHB#%x-PE#%x\n",
+                                       __func__, rc,
+                                       phb->hose->global_number, pe->addr);
+                               ret = -EIO;
+                       }
+               }
+       } else {
+               if (phb->unfreeze_pe) {
+                       ret = phb->unfreeze_pe(phb, pe->addr, opt);
+               } else {
+                       rc = opal_pci_eeh_freeze_clear(phb->opal_id,
+                                                      pe->addr, opt);
+                       if (rc != OPAL_SUCCESS) {
+                               pr_warn("%s: Failure %lld enable %d "
+                                       "for PHB#%x-PE#%x\n",
+                                       __func__, rc, option,
+                                       phb->hose->global_number, pe->addr);
+                               ret = -EIO;
+                       }
+               }
+       }
 
        return ret;
 }

diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
index d8808caf19f2ba6a4e791bd64b88cb7d2273c585..8043dee64a51bff566ffae45c57825d204d7fa58 100644 (file)
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h
@@ -78,7 +78,6 @@ struct pnv_ioda_pe {
 /* IOC dependent EEH operations */
 #ifdef CONFIG_EEH
 struct pnv_eeh_ops {
-       int (*set_option)(struct eeh_pe *pe, int option);
        int (*get_state)(struct eeh_pe *pe);
        int (*reset)(struct eeh_pe *pe, int option);
        int (*next_error)(struct eeh_pe **pe);