#include "powernv.h"
#include "pci.h"
-static void ioda_eeh_phb_diag(struct eeh_pe *pe)
-{
- struct pnv_phb *phb = pe->phb->private_data;
- long rc;
-
- rc = opal_pci_get_phb_diag_data2(phb->opal_id, pe->data,
- PNV_PCI_DIAG_BUF_SIZE);
- if (rc != OPAL_SUCCESS)
- pr_warn("%s: Failed to get diag-data for PHB#%x (%ld)\n",
- __func__, pe->phb->global_number, rc);
-}
-
static s64 ioda_eeh_phb_poll(struct pnv_phb *phb)
{
s64 rc = OPAL_HARDWARE;
return ret;
}
-static void ioda_eeh_hub_diag_common(struct OpalIoP7IOCErrorData *data)
-{
- /* GEM */
- if (data->gemXfir || data->gemRfir ||
- data->gemRirqfir || data->gemMask || data->gemRwof)
- pr_info(" GEM: %016llx %016llx %016llx %016llx %016llx\n",
- be64_to_cpu(data->gemXfir),
- be64_to_cpu(data->gemRfir),
- be64_to_cpu(data->gemRirqfir),
- be64_to_cpu(data->gemMask),
- be64_to_cpu(data->gemRwof));
-
- /* LEM */
- if (data->lemFir || data->lemErrMask ||
- data->lemAction0 || data->lemAction1 || data->lemWof)
- pr_info(" LEM: %016llx %016llx %016llx %016llx %016llx\n",
- be64_to_cpu(data->lemFir),
- be64_to_cpu(data->lemErrMask),
- be64_to_cpu(data->lemAction0),
- be64_to_cpu(data->lemAction1),
- be64_to_cpu(data->lemWof));
-}
-
-static void ioda_eeh_hub_diag(struct pci_controller *hose)
-{
- struct pnv_phb *phb = hose->private_data;
- struct OpalIoP7IOCErrorData *data = &phb->diag.hub_diag;
- long rc;
-
- rc = opal_pci_get_hub_diag_data(phb->hub_id, data, sizeof(*data));
- if (rc != OPAL_SUCCESS) {
- pr_warn("%s: Failed to get HUB#%llx diag-data (%ld)\n",
- __func__, phb->hub_id, rc);
- return;
- }
-
- switch (data->type) {
- case OPAL_P7IOC_DIAG_TYPE_RGC:
- pr_info("P7IOC diag-data for RGC\n\n");
- ioda_eeh_hub_diag_common(data);
- if (data->rgc.rgcStatus || data->rgc.rgcLdcp)
- pr_info(" RGC: %016llx %016llx\n",
- be64_to_cpu(data->rgc.rgcStatus),
- be64_to_cpu(data->rgc.rgcLdcp));
- break;
- case OPAL_P7IOC_DIAG_TYPE_BI:
- pr_info("P7IOC diag-data for BI %s\n\n",
- data->bi.biDownbound ? "Downbound" : "Upbound");
- ioda_eeh_hub_diag_common(data);
- if (data->bi.biLdcp0 || data->bi.biLdcp1 ||
- data->bi.biLdcp2 || data->bi.biFenceStatus)
- pr_info(" BI: %016llx %016llx %016llx %016llx\n",
- be64_to_cpu(data->bi.biLdcp0),
- be64_to_cpu(data->bi.biLdcp1),
- be64_to_cpu(data->bi.biLdcp2),
- be64_to_cpu(data->bi.biFenceStatus));
- break;
- case OPAL_P7IOC_DIAG_TYPE_CI:
- pr_info("P7IOC diag-data for CI Port %d\n\n",
- data->ci.ciPort);
- ioda_eeh_hub_diag_common(data);
- if (data->ci.ciPortStatus || data->ci.ciPortLdcp)
- pr_info(" CI: %016llx %016llx\n",
- be64_to_cpu(data->ci.ciPortStatus),
- be64_to_cpu(data->ci.ciPortLdcp));
- break;
- case OPAL_P7IOC_DIAG_TYPE_MISC:
- pr_info("P7IOC diag-data for MISC\n\n");
- ioda_eeh_hub_diag_common(data);
- break;
- case OPAL_P7IOC_DIAG_TYPE_I2C:
- pr_info("P7IOC diag-data for I2C\n\n");
- ioda_eeh_hub_diag_common(data);
- break;
- default:
- pr_warn("%s: Invalid type of HUB#%llx diag-data (%d)\n",
- __func__, phb->hub_id, data->type);
- }
-}
-
-static int ioda_eeh_get_pe(struct pci_controller *hose,
- u16 pe_no, struct eeh_pe **pe)
-{
- struct pnv_phb *phb = hose->private_data;
- struct pnv_ioda_pe *pnv_pe;
- struct eeh_pe *dev_pe;
- struct eeh_dev edev;
-
- /*
- * If PHB supports compound PE, to fetch
- * the master PE because slave PE is invisible
- * to EEH core.
- */
- pnv_pe = &phb->ioda.pe_array[pe_no];
- if (pnv_pe->flags & PNV_IODA_PE_SLAVE) {
- pnv_pe = pnv_pe->master;
- WARN_ON(!pnv_pe ||
- !(pnv_pe->flags & PNV_IODA_PE_MASTER));
- pe_no = pnv_pe->pe_number;
- }
-
- /* Find the PE according to PE# */
- memset(&edev, 0, sizeof(struct eeh_dev));
- edev.phb = hose;
- edev.pe_config_addr = pe_no;
- dev_pe = eeh_pe_get(&edev);
- if (!dev_pe)
- return -EEXIST;
-
- /* Freeze the (compound) PE */
- *pe = dev_pe;
- if (!(dev_pe->state & EEH_PE_ISOLATED))
- phb->freeze_pe(phb, pe_no);
-
- /*
- * At this point, we're sure the (compound) PE should
- * have been frozen. However, we still need poke until
- * hitting the frozen PE on top level.
- */
- dev_pe = dev_pe->parent;
- while (dev_pe && !(dev_pe->type & EEH_PE_PHB)) {
- int ret;
- int active_flags = (EEH_STATE_MMIO_ACTIVE |
- EEH_STATE_DMA_ACTIVE);
-
- ret = eeh_ops->get_state(dev_pe, NULL);
- if (ret <= 0 || (ret & active_flags) == active_flags) {
- dev_pe = dev_pe->parent;
- continue;
- }
-
- /* Frozen parent PE */
- *pe = dev_pe;
- if (!(dev_pe->state & EEH_PE_ISOLATED))
- phb->freeze_pe(phb, dev_pe->addr);
-
- /* Next one */
- dev_pe = dev_pe->parent;
- }
-
- return 0;
-}
-
-/**
- * ioda_eeh_next_error - Retrieve next error for EEH core to handle
- * @pe: The affected PE
- *
- * The function is expected to be called by EEH core while it gets
- * special EEH event (without binding PE). The function calls to
- * OPAL APIs for next error to handle. The informational error is
- * handled internally by platform. However, the dead IOC, dead PHB,
- * fenced PHB and frozen PE should be handled by EEH core eventually.
- */
-static int ioda_eeh_next_error(struct eeh_pe **pe)
-{
- struct pci_controller *hose;
- struct pnv_phb *phb;
- struct eeh_pe *phb_pe, *parent_pe;
- __be64 frozen_pe_no;
- __be16 err_type, severity;
- int active_flags = (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE);
- long rc;
- int state, ret = EEH_NEXT_ERR_NONE;
-
- /*
- * While running here, it's safe to purge the event queue.
- * And we should keep the cached OPAL notifier event sychronized
- * between the kernel and firmware.
- */
- eeh_remove_event(NULL, false);
- opal_notifier_update_evt(OPAL_EVENT_PCI_ERROR, 0x0ul);
-
- list_for_each_entry(hose, &hose_list, list_node) {
- /*
- * If the subordinate PCI buses of the PHB has been
- * removed or is exactly under error recovery, we
- * needn't take care of it any more.
- */
- phb = hose->private_data;
- phb_pe = eeh_phb_pe_get(hose);
- if (!phb_pe || (phb_pe->state & EEH_PE_ISOLATED))
- continue;
-
- rc = opal_pci_next_error(phb->opal_id,
- &frozen_pe_no, &err_type, &severity);
-
- /* If OPAL API returns error, we needn't proceed */
- if (rc != OPAL_SUCCESS) {
- pr_devel("%s: Invalid return value on "
- "PHB#%x (0x%lx) from opal_pci_next_error",
- __func__, hose->global_number, rc);
- continue;
- }
-
- /* If the PHB doesn't have error, stop processing */
- if (be16_to_cpu(err_type) == OPAL_EEH_NO_ERROR ||
- be16_to_cpu(severity) == OPAL_EEH_SEV_NO_ERROR) {
- pr_devel("%s: No error found on PHB#%x\n",
- __func__, hose->global_number);
- continue;
- }
-
- /*
- * Processing the error. We're expecting the error with
- * highest priority reported upon multiple errors on the
- * specific PHB.
- */
- pr_devel("%s: Error (%d, %d, %llu) on PHB#%x\n",
- __func__, be16_to_cpu(err_type), be16_to_cpu(severity),
- be64_to_cpu(frozen_pe_no), hose->global_number);
- switch (be16_to_cpu(err_type)) {
- case OPAL_EEH_IOC_ERROR:
- if (be16_to_cpu(severity) == OPAL_EEH_SEV_IOC_DEAD) {
- pr_err("EEH: dead IOC detected\n");
- ret = EEH_NEXT_ERR_DEAD_IOC;
- } else if (be16_to_cpu(severity) == OPAL_EEH_SEV_INF) {
- pr_info("EEH: IOC informative error "
- "detected\n");
- ioda_eeh_hub_diag(hose);
- ret = EEH_NEXT_ERR_NONE;
- }
-
- break;
- case OPAL_EEH_PHB_ERROR:
- if (be16_to_cpu(severity) == OPAL_EEH_SEV_PHB_DEAD) {
- *pe = phb_pe;
- pr_err("EEH: dead PHB#%x detected, "
- "location: %s\n",
- hose->global_number,
- eeh_pe_loc_get(phb_pe));
- ret = EEH_NEXT_ERR_DEAD_PHB;
- } else if (be16_to_cpu(severity) ==
- OPAL_EEH_SEV_PHB_FENCED) {
- *pe = phb_pe;
- pr_err("EEH: Fenced PHB#%x detected, "
- "location: %s\n",
- hose->global_number,
- eeh_pe_loc_get(phb_pe));
- ret = EEH_NEXT_ERR_FENCED_PHB;
- } else if (be16_to_cpu(severity) == OPAL_EEH_SEV_INF) {
- pr_info("EEH: PHB#%x informative error "
- "detected, location: %s\n",
- hose->global_number,
- eeh_pe_loc_get(phb_pe));
- ioda_eeh_phb_diag(phb_pe);
- pnv_pci_dump_phb_diag_data(hose, phb_pe->data);
- ret = EEH_NEXT_ERR_NONE;
- }
-
- break;
- case OPAL_EEH_PE_ERROR:
- /*
- * If we can't find the corresponding PE, we
- * just try to unfreeze.
- */
- if (ioda_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, frozen_pe_no);
- pr_info("EEH: PHB location: %s\n",
- eeh_pe_loc_get(phb_pe));
- opal_pci_eeh_freeze_clear(phb->opal_id, frozen_pe_no,
- OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);
- ret = EEH_NEXT_ERR_NONE;
- } else if ((*pe)->state & EEH_PE_ISOLATED ||
- eeh_pe_passed(*pe)) {
- ret = EEH_NEXT_ERR_NONE;
- } else {
- pr_err("EEH: Frozen PE#%x on PHB#%x detected\n",
- (*pe)->addr, (*pe)->phb->global_number);
- pr_err("EEH: PE location: %s, PHB location: %s\n",
- eeh_pe_loc_get(*pe), eeh_pe_loc_get(phb_pe));
- ret = EEH_NEXT_ERR_FROZEN_PE;
- }
-
- break;
- default:
- pr_warn("%s: Unexpected error type %d\n",
- __func__, be16_to_cpu(err_type));
- }
-
- /*
- * EEH core will try recover from fenced PHB or
- * frozen PE. In the time for frozen PE, EEH core
- * enable IO path for that before collecting logs,
- * but it ruins the site. So we have to dump the
- * log in advance here.
- */
- if ((ret == EEH_NEXT_ERR_FROZEN_PE ||
- ret == EEH_NEXT_ERR_FENCED_PHB) &&
- !((*pe)->state & EEH_PE_ISOLATED)) {
- eeh_pe_state_mark(*pe, EEH_PE_ISOLATED);
- ioda_eeh_phb_diag(*pe);
-
- if (eeh_has_flag(EEH_EARLY_DUMP_LOG))
- pnv_pci_dump_phb_diag_data((*pe)->phb,
- (*pe)->data);
- }
-
- /*
- * We probably have the frozen parent PE out there and
- * we need have to handle frozen parent PE firstly.
- */
- if (ret == EEH_NEXT_ERR_FROZEN_PE) {
- parent_pe = (*pe)->parent;
- while (parent_pe) {
- /* Hit the ceiling ? */
- if (parent_pe->type & EEH_PE_PHB)
- break;
-
- /* Frozen parent PE ? */
- state = eeh_ops->get_state(parent_pe, NULL);
- if (state > 0 &&
- (state & active_flags) != active_flags)
- *pe = parent_pe;
-
- /* Next parent level */
- parent_pe = parent_pe->parent;
- }
-
- /* We possibly migrate to another PE */
- eeh_pe_state_mark(*pe, EEH_PE_ISOLATED);
- }
-
- /*
- * If we have no errors on the specific PHB or only
- * informative error there, we continue poking it.
- * Otherwise, we need actions to be taken by upper
- * layer.
- */
- if (ret > EEH_NEXT_ERR_INF)
- break;
- }
-
- return ret;
-}
-
struct pnv_eeh_ops ioda_eeh_ops = {
.reset = ioda_eeh_reset,
- .next_error = ioda_eeh_next_error
};
return pnv_pci_cfg_write(dn, where, size, val);
}
+static void pnv_eeh_dump_hub_diag_common(struct OpalIoP7IOCErrorData *data)
+{
+ /* GEM */
+ if (data->gemXfir || data->gemRfir ||
+ data->gemRirqfir || data->gemMask || data->gemRwof)
+ pr_info(" GEM: %016llx %016llx %016llx %016llx %016llx\n",
+ be64_to_cpu(data->gemXfir),
+ be64_to_cpu(data->gemRfir),
+ be64_to_cpu(data->gemRirqfir),
+ be64_to_cpu(data->gemMask),
+ be64_to_cpu(data->gemRwof));
+
+ /* LEM */
+ if (data->lemFir || data->lemErrMask ||
+ data->lemAction0 || data->lemAction1 || data->lemWof)
+ pr_info(" LEM: %016llx %016llx %016llx %016llx %016llx\n",
+ be64_to_cpu(data->lemFir),
+ be64_to_cpu(data->lemErrMask),
+ be64_to_cpu(data->lemAction0),
+ be64_to_cpu(data->lemAction1),
+ be64_to_cpu(data->lemWof));
+}
+
+static void pnv_eeh_get_and_dump_hub_diag(struct pci_controller *hose)
+{
+ struct pnv_phb *phb = hose->private_data;
+ struct OpalIoP7IOCErrorData *data = &phb->diag.hub_diag;
+ long rc;
+
+ rc = opal_pci_get_hub_diag_data(phb->hub_id, data, sizeof(*data));
+ if (rc != OPAL_SUCCESS) {
+ pr_warn("%s: Failed to get HUB#%llx diag-data (%ld)\n",
+ __func__, phb->hub_id, rc);
+ return;
+ }
+
+ switch (data->type) {
+ case OPAL_P7IOC_DIAG_TYPE_RGC:
+ pr_info("P7IOC diag-data for RGC\n\n");
+ pnv_eeh_dump_hub_diag_common(data);
+ if (data->rgc.rgcStatus || data->rgc.rgcLdcp)
+ pr_info(" RGC: %016llx %016llx\n",
+ be64_to_cpu(data->rgc.rgcStatus),
+ be64_to_cpu(data->rgc.rgcLdcp));
+ break;
+ case OPAL_P7IOC_DIAG_TYPE_BI:
+ pr_info("P7IOC diag-data for BI %s\n\n",
+ data->bi.biDownbound ? "Downbound" : "Upbound");
+ pnv_eeh_dump_hub_diag_common(data);
+ if (data->bi.biLdcp0 || data->bi.biLdcp1 ||
+ data->bi.biLdcp2 || data->bi.biFenceStatus)
+ pr_info(" BI: %016llx %016llx %016llx %016llx\n",
+ be64_to_cpu(data->bi.biLdcp0),
+ be64_to_cpu(data->bi.biLdcp1),
+ be64_to_cpu(data->bi.biLdcp2),
+ be64_to_cpu(data->bi.biFenceStatus));
+ break;
+ case OPAL_P7IOC_DIAG_TYPE_CI:
+ pr_info("P7IOC diag-data for CI Port %d\n\n",
+ data->ci.ciPort);
+ pnv_eeh_dump_hub_diag_common(data);
+ if (data->ci.ciPortStatus || data->ci.ciPortLdcp)
+ pr_info(" CI: %016llx %016llx\n",
+ be64_to_cpu(data->ci.ciPortStatus),
+ be64_to_cpu(data->ci.ciPortLdcp));
+ break;
+ case OPAL_P7IOC_DIAG_TYPE_MISC:
+ pr_info("P7IOC diag-data for MISC\n\n");
+ pnv_eeh_dump_hub_diag_common(data);
+ break;
+ case OPAL_P7IOC_DIAG_TYPE_I2C:
+ pr_info("P7IOC diag-data for I2C\n\n");
+ pnv_eeh_dump_hub_diag_common(data);
+ break;
+ default:
+ pr_warn("%s: Invalid type of HUB#%llx diag-data (%d)\n",
+ __func__, phb->hub_id, data->type);
+ }
+}
+
+static int pnv_eeh_get_pe(struct pci_controller *hose,
+ u16 pe_no, struct eeh_pe **pe)
+{
+ struct pnv_phb *phb = hose->private_data;
+ struct pnv_ioda_pe *pnv_pe;
+ struct eeh_pe *dev_pe;
+ struct eeh_dev edev;
+
+ /*
+ * If PHB supports compound PE, to fetch
+ * the master PE because slave PE is invisible
+ * to EEH core.
+ */
+ pnv_pe = &phb->ioda.pe_array[pe_no];
+ if (pnv_pe->flags & PNV_IODA_PE_SLAVE) {
+ pnv_pe = pnv_pe->master;
+ WARN_ON(!pnv_pe ||
+ !(pnv_pe->flags & PNV_IODA_PE_MASTER));
+ pe_no = pnv_pe->pe_number;
+ }
+
+ /* Find the PE according to PE# */
+ memset(&edev, 0, sizeof(struct eeh_dev));
+ edev.phb = hose;
+ edev.pe_config_addr = pe_no;
+ dev_pe = eeh_pe_get(&edev);
+ if (!dev_pe)
+ return -EEXIST;
+
+ /* Freeze the (compound) PE */
+ *pe = dev_pe;
+ if (!(dev_pe->state & EEH_PE_ISOLATED))
+ phb->freeze_pe(phb, pe_no);
+
+ /*
+ * At this point, we're sure the (compound) PE should
+ * have been frozen. However, we still need poke until
+ * hitting the frozen PE on top level.
+ */
+ dev_pe = dev_pe->parent;
+ while (dev_pe && !(dev_pe->type & EEH_PE_PHB)) {
+ int ret;
+ int active_flags = (EEH_STATE_MMIO_ACTIVE |
+ EEH_STATE_DMA_ACTIVE);
+
+ ret = eeh_ops->get_state(dev_pe, NULL);
+ if (ret <= 0 || (ret & active_flags) == active_flags) {
+ dev_pe = dev_pe->parent;
+ continue;
+ }
+
+ /* Frozen parent PE */
+ *pe = dev_pe;
+ if (!(dev_pe->state & EEH_PE_ISOLATED))
+ phb->freeze_pe(phb, dev_pe->addr);
+
+ /* Next one */
+ dev_pe = dev_pe->parent;
+ }
+
+ return 0;
+}
+
/**
* pnv_eeh_next_error - Retrieve next EEH error to handle
* @pe: Affected PE
*
- * Using OPAL API, to retrieve next EEH error for EEH core to handle
+ * The function is expected to be called by EEH core while it gets
+ * special EEH event (without binding PE). The function calls to
+ * OPAL APIs for next error to handle. The informational error is
+ * handled internally by platform. However, the dead IOC, dead PHB,
+ * fenced PHB and frozen PE should be handled by EEH core eventually.
*/
static int pnv_eeh_next_error(struct eeh_pe **pe)
{
struct pci_controller *hose;
- struct pnv_phb *phb = NULL;
+ struct pnv_phb *phb;
+ struct eeh_pe *phb_pe, *parent_pe;
+ __be64 frozen_pe_no;
+ __be16 err_type, severity;
+ int active_flags = (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE);
+ long rc;
+ int state, ret = EEH_NEXT_ERR_NONE;
+
+ /*
+ * While running here, it's safe to purge the event queue.
+ * And we should keep the cached OPAL notifier event sychronized
+ * between the kernel and firmware.
+ */
+ eeh_remove_event(NULL, false);
+ opal_notifier_update_evt(OPAL_EVENT_PCI_ERROR, 0x0ul);
list_for_each_entry(hose, &hose_list, list_node) {
+ /*
+ * If the subordinate PCI buses of the PHB has been
+ * removed or is exactly under error recovery, we
+ * needn't take care of it any more.
+ */
phb = hose->private_data;
- break;
- }
+ phb_pe = eeh_phb_pe_get(hose);
+ if (!phb_pe || (phb_pe->state & EEH_PE_ISOLATED))
+ continue;
+
+ rc = opal_pci_next_error(phb->opal_id,
+ &frozen_pe_no, &err_type, &severity);
+ if (rc != OPAL_SUCCESS) {
+ pr_devel("%s: Invalid return value on "
+ "PHB#%x (0x%lx) from opal_pci_next_error",
+ __func__, hose->global_number, rc);
+ continue;
+ }
+
+ /* If the PHB doesn't have error, stop processing */
+ if (be16_to_cpu(err_type) == OPAL_EEH_NO_ERROR ||
+ be16_to_cpu(severity) == OPAL_EEH_SEV_NO_ERROR) {
+ pr_devel("%s: No error found on PHB#%x\n",
+ __func__, hose->global_number);
+ continue;
+ }
- if (phb && phb->eeh_ops->next_error)
- return phb->eeh_ops->next_error(pe);
+ /*
+ * Processing the error. We're expecting the error with
+ * highest priority reported upon multiple errors on the
+ * specific PHB.
+ */
+ pr_devel("%s: Error (%d, %d, %llu) on PHB#%x\n",
+ __func__, be16_to_cpu(err_type),
+ be16_to_cpu(severity), be64_to_cpu(frozen_pe_no),
+ hose->global_number);
+ switch (be16_to_cpu(err_type)) {
+ case OPAL_EEH_IOC_ERROR:
+ if (be16_to_cpu(severity) == OPAL_EEH_SEV_IOC_DEAD) {
+ pr_err("EEH: dead IOC detected\n");
+ ret = EEH_NEXT_ERR_DEAD_IOC;
+ } else if (be16_to_cpu(severity) == OPAL_EEH_SEV_INF) {
+ pr_info("EEH: IOC informative error "
+ "detected\n");
+ pnv_eeh_get_and_dump_hub_diag(hose);
+ ret = EEH_NEXT_ERR_NONE;
+ }
+
+ break;
+ case OPAL_EEH_PHB_ERROR:
+ if (be16_to_cpu(severity) == OPAL_EEH_SEV_PHB_DEAD) {
+ *pe = phb_pe;
+ pr_err("EEH: dead PHB#%x detected, "
+ "location: %s\n",
+ hose->global_number,
+ eeh_pe_loc_get(phb_pe));
+ ret = EEH_NEXT_ERR_DEAD_PHB;
+ } else if (be16_to_cpu(severity) ==
+ OPAL_EEH_SEV_PHB_FENCED) {
+ *pe = phb_pe;
+ pr_err("EEH: Fenced PHB#%x detected, "
+ "location: %s\n",
+ hose->global_number,
+ eeh_pe_loc_get(phb_pe));
+ ret = EEH_NEXT_ERR_FENCED_PHB;
+ } else if (be16_to_cpu(severity) == OPAL_EEH_SEV_INF) {
+ pr_info("EEH: PHB#%x informative error "
+ "detected, location: %s\n",
+ hose->global_number,
+ eeh_pe_loc_get(phb_pe));
+ pnv_eeh_get_phb_diag(phb_pe);
+ pnv_pci_dump_phb_diag_data(hose, phb_pe->data);
+ ret = EEH_NEXT_ERR_NONE;
+ }
- return -EEXIST;
+ break;
+ case OPAL_EEH_PE_ERROR:
+ /*
+ * If we can't find the corresponding PE, we
+ * just try to unfreeze.
+ */
+ 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, frozen_pe_no);
+ pr_info("EEH: PHB location: %s\n",
+ eeh_pe_loc_get(phb_pe));
+ opal_pci_eeh_freeze_clear(phb->opal_id,
+ frozen_pe_no,
+ OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);
+ ret = EEH_NEXT_ERR_NONE;
+ } else if ((*pe)->state & EEH_PE_ISOLATED ||
+ eeh_pe_passed(*pe)) {
+ ret = EEH_NEXT_ERR_NONE;
+ } else {
+ pr_err("EEH: Frozen PE#%x "
+ "on PHB#%x detected\n",
+ (*pe)->addr,
+ (*pe)->phb->global_number);
+ pr_err("EEH: PE location: %s, "
+ "PHB location: %s\n",
+ eeh_pe_loc_get(*pe),
+ eeh_pe_loc_get(phb_pe));
+ ret = EEH_NEXT_ERR_FROZEN_PE;
+ }
+
+ break;
+ default:
+ pr_warn("%s: Unexpected error type %d\n",
+ __func__, be16_to_cpu(err_type));
+ }
+
+ /*
+ * EEH core will try recover from fenced PHB or
+ * frozen PE. In the time for frozen PE, EEH core
+ * enable IO path for that before collecting logs,
+ * but it ruins the site. So we have to dump the
+ * log in advance here.
+ */
+ if ((ret == EEH_NEXT_ERR_FROZEN_PE ||
+ ret == EEH_NEXT_ERR_FENCED_PHB) &&
+ !((*pe)->state & EEH_PE_ISOLATED)) {
+ eeh_pe_state_mark(*pe, EEH_PE_ISOLATED);
+ pnv_eeh_get_phb_diag(*pe);
+
+ if (eeh_has_flag(EEH_EARLY_DUMP_LOG))
+ pnv_pci_dump_phb_diag_data((*pe)->phb,
+ (*pe)->data);
+ }
+
+ /*
+ * We probably have the frozen parent PE out there and
+ * we need have to handle frozen parent PE firstly.
+ */
+ if (ret == EEH_NEXT_ERR_FROZEN_PE) {
+ parent_pe = (*pe)->parent;
+ while (parent_pe) {
+ /* Hit the ceiling ? */
+ if (parent_pe->type & EEH_PE_PHB)
+ break;
+
+ /* Frozen parent PE ? */
+ state = eeh_ops->get_state(parent_pe, NULL);
+ if (state > 0 &&
+ (state & active_flags) != active_flags)
+ *pe = parent_pe;
+
+ /* Next parent level */
+ parent_pe = parent_pe->parent;
+ }
+
+ /* We possibly migrate to another PE */
+ eeh_pe_state_mark(*pe, EEH_PE_ISOLATED);
+ }
+
+ /*
+ * If we have no errors on the specific PHB or only
+ * informative error there, we continue poking it.
+ * Otherwise, we need actions to be taken by upper
+ * layer.
+ */
+ if (ret > EEH_NEXT_ERR_INF)
+ break;
+ }
+
+ return ret;
}
static int pnv_eeh_restore_config(struct device_node *dn)
projects / karo-tx-linux.git / commitdiff