#include "powernv.h"
#include "pci.h"
+/* Debugging option */
+#ifdef IODA_EEH_DBG_ON
+#define IODA_EEH_DBG(args...) pr_info(args)
+#else
+#define IODA_EEH_DBG(args...)
+#endif
+
+static char *hub_diag = NULL;
+
/**
* ioda_eeh_post_init - Chip dependent post initialization
* @hose: PCI controller
struct pnv_phb *phb = hose->private_data;
/* FIXME: Enable it for PHB3 later */
- if (phb->type == PNV_PHB_IODA1)
+ if (phb->type == PNV_PHB_IODA1) {
+ if (!hub_diag) {
+ hub_diag = (char *)__get_free_page(GFP_KERNEL |
+ __GFP_ZERO);
+ if (!hub_diag) {
+ pr_err("%s: Out of memory !\n",
+ __func__);
+ return -ENOMEM;
+ }
+ }
+
phb->eeh_enabled = 1;
+ }
return 0;
}
return 0;
}
+static void ioda_eeh_hub_diag_common(struct OpalIoP7IOCErrorData *data)
+{
+ /* GEM */
+ pr_info(" GEM XFIR: %016llx\n", data->gemXfir);
+ pr_info(" GEM RFIR: %016llx\n", data->gemRfir);
+ pr_info(" GEM RIRQFIR: %016llx\n", data->gemRirqfir);
+ pr_info(" GEM Mask: %016llx\n", data->gemMask);
+ pr_info(" GEM RWOF: %016llx\n", data->gemRwof);
+
+ /* LEM */
+ pr_info(" LEM FIR: %016llx\n", data->lemFir);
+ pr_info(" LEM Error Mask: %016llx\n", data->lemErrMask);
+ pr_info(" LEM Action 0: %016llx\n", data->lemAction0);
+ pr_info(" LEM Action 1: %016llx\n", data->lemAction1);
+ pr_info(" LEM WOF: %016llx\n", data->lemWof);
+}
+
+static void ioda_eeh_hub_diag(struct pci_controller *hose)
+{
+ struct pnv_phb *phb = hose->private_data;
+ struct OpalIoP7IOCErrorData *data;
+ long rc;
+
+ data = (struct OpalIoP7IOCErrorData *)ioda_eeh_hub_diag;
+ rc = opal_pci_get_hub_diag_data(phb->hub_id, data, PAGE_SIZE);
+ if (rc != OPAL_SUCCESS) {
+ pr_warning("%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);
+ pr_info(" RGC Status: %016llx\n", data->rgc.rgcStatus);
+ pr_info(" RGC LDCP: %016llx\n", 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);
+ pr_info(" BI LDCP 0: %016llx\n", data->bi.biLdcp0);
+ pr_info(" BI LDCP 1: %016llx\n", data->bi.biLdcp1);
+ pr_info(" BI LDCP 2: %016llx\n", data->bi.biLdcp2);
+ pr_info(" BI Fence Status: %016llx\n", data->bi.biFenceStatus);
+ break;
+ case OPAL_P7IOC_DIAG_TYPE_CI:
+ pr_info("P7IOC diag-data for CI Port %d\\nn",
+ data->ci.ciPort);
+ ioda_eeh_hub_diag_common(data);
+ pr_info(" CI Port Status: %016llx\n", data->ci.ciPortStatus);
+ pr_info(" CI Port LDCP: %016llx\n", 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_warning("%s: Invalid type of HUB#%llx diag-data (%d)\n",
+ __func__, phb->hub_id, data->type);
+ }
+}
+
+static void ioda_eeh_p7ioc_phb_diag(struct pci_controller *hose,
+ struct OpalIoPhbErrorCommon *common)
+{
+ struct OpalIoP7IOCPhbErrorData *data;
+ int i;
+
+ data = (struct OpalIoP7IOCPhbErrorData *)common;
+
+ pr_info("P7IOC PHB#%x Diag-data (Version: %d)\n\n",
+ hose->global_number, common->version);
+
+ pr_info(" brdgCtl: %08x\n", data->brdgCtl);
+
+ pr_info(" portStatusReg: %08x\n", data->portStatusReg);
+ pr_info(" rootCmplxStatus: %08x\n", data->rootCmplxStatus);
+ pr_info(" busAgentStatus: %08x\n", data->busAgentStatus);
+
+ pr_info(" deviceStatus: %08x\n", data->deviceStatus);
+ pr_info(" slotStatus: %08x\n", data->slotStatus);
+ pr_info(" linkStatus: %08x\n", data->linkStatus);
+ pr_info(" devCmdStatus: %08x\n", data->devCmdStatus);
+ pr_info(" devSecStatus: %08x\n", data->devSecStatus);
+
+ pr_info(" rootErrorStatus: %08x\n", data->rootErrorStatus);
+ pr_info(" uncorrErrorStatus: %08x\n", data->uncorrErrorStatus);
+ pr_info(" corrErrorStatus: %08x\n", data->corrErrorStatus);
+ pr_info(" tlpHdr1: %08x\n", data->tlpHdr1);
+ pr_info(" tlpHdr2: %08x\n", data->tlpHdr2);
+ pr_info(" tlpHdr3: %08x\n", data->tlpHdr3);
+ pr_info(" tlpHdr4: %08x\n", data->tlpHdr4);
+ pr_info(" sourceId: %08x\n", data->sourceId);
+
+ pr_info(" errorClass: %016llx\n", data->errorClass);
+ pr_info(" correlator: %016llx\n", data->correlator);
+ pr_info(" p7iocPlssr: %016llx\n", data->p7iocPlssr);
+ pr_info(" p7iocCsr: %016llx\n", data->p7iocCsr);
+ pr_info(" lemFir: %016llx\n", data->lemFir);
+ pr_info(" lemErrorMask: %016llx\n", data->lemErrorMask);
+ pr_info(" lemWOF: %016llx\n", data->lemWOF);
+ pr_info(" phbErrorStatus: %016llx\n", data->phbErrorStatus);
+ pr_info(" phbFirstErrorStatus: %016llx\n", data->phbFirstErrorStatus);
+ pr_info(" phbErrorLog0: %016llx\n", data->phbErrorLog0);
+ pr_info(" phbErrorLog1: %016llx\n", data->phbErrorLog1);
+ pr_info(" mmioErrorStatus: %016llx\n", data->mmioErrorStatus);
+ pr_info(" mmioFirstErrorStatus: %016llx\n", data->mmioFirstErrorStatus);
+ pr_info(" mmioErrorLog0: %016llx\n", data->mmioErrorLog0);
+ pr_info(" mmioErrorLog1: %016llx\n", data->mmioErrorLog1);
+ pr_info(" dma0ErrorStatus: %016llx\n", data->dma0ErrorStatus);
+ pr_info(" dma0FirstErrorStatus: %016llx\n", data->dma0FirstErrorStatus);
+ pr_info(" dma0ErrorLog0: %016llx\n", data->dma0ErrorLog0);
+ pr_info(" dma0ErrorLog1: %016llx\n", data->dma0ErrorLog1);
+ pr_info(" dma1ErrorStatus: %016llx\n", data->dma1ErrorStatus);
+ pr_info(" dma1FirstErrorStatus: %016llx\n", data->dma1FirstErrorStatus);
+ pr_info(" dma1ErrorLog0: %016llx\n", data->dma1ErrorLog0);
+ pr_info(" dma1ErrorLog1: %016llx\n", data->dma1ErrorLog1);
+
+ for (i = 0; i < OPAL_P7IOC_NUM_PEST_REGS; i++) {
+ if ((data->pestA[i] >> 63) == 0 &&
+ (data->pestB[i] >> 63) == 0)
+ continue;
+
+ pr_info(" PE[%3d] PESTA: %016llx\n", i, data->pestA[i]);
+ pr_info(" PESTB: %016llx\n", data->pestB[i]);
+ }
+}
+
+static void ioda_eeh_phb_diag(struct pci_controller *hose)
+{
+ struct pnv_phb *phb = hose->private_data;
+ struct OpalIoPhbErrorCommon *common;
+ long rc;
+
+ common = (struct OpalIoPhbErrorCommon *)phb->diag.blob;
+ rc = opal_pci_get_phb_diag_data2(phb->opal_id, common, PAGE_SIZE);
+ if (rc != OPAL_SUCCESS) {
+ pr_warning("%s: Failed to get diag-data for PHB#%x (%ld)\n",
+ __func__, hose->global_number, rc);
+ return;
+ }
+
+ switch (common->ioType) {
+ case OPAL_PHB_ERROR_DATA_TYPE_P7IOC:
+ ioda_eeh_p7ioc_phb_diag(hose, common);
+ break;
+ default:
+ pr_warning("%s: Unrecognized I/O chip %d\n",
+ __func__, common->ioType);
+ }
+}
+
+static int ioda_eeh_get_phb_pe(struct pci_controller *hose,
+ struct eeh_pe **pe)
+{
+ struct eeh_pe *phb_pe;
+
+ phb_pe = eeh_phb_pe_get(hose);
+ if (!phb_pe) {
+ pr_warning("%s Can't find PE for PHB#%d\n",
+ __func__, hose->global_number);
+ return -EEXIST;
+ }
+
+ *pe = phb_pe;
+ return 0;
+}
+
+static int ioda_eeh_get_pe(struct pci_controller *hose,
+ u16 pe_no, struct eeh_pe **pe)
+{
+ struct eeh_pe *phb_pe, *dev_pe;
+ struct eeh_dev dev;
+
+ /* Find the PHB PE */
+ if (ioda_eeh_get_phb_pe(hose, &phb_pe))
+ return -EEXIST;
+
+ /* Find the PE according to PE# */
+ memset(&dev, 0, sizeof(struct eeh_dev));
+ dev.phb = hose;
+ dev.pe_config_addr = pe_no;
+ dev_pe = eeh_pe_get(&dev);
+ if (!dev_pe) {
+ pr_warning("%s: Can't find PE for PHB#%x - PE#%x\n",
+ __func__, hose->global_number, pe_no);
+ return -EEXIST;
+ }
+
+ *pe = dev_pe;
+ 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, *tmp;
+ struct pnv_phb *phb;
+ u64 frozen_pe_no;
+ u16 err_type, severity;
+ long rc;
+ int ret = 1;
+
+ /* While running here, it's safe to purge the event queue */
+ eeh_remove_event(NULL);
+
+ list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
+ /*
+ * If the subordinate PCI buses of the PHB has been
+ * removed, we needn't take care of it any more.
+ */
+ phb = hose->private_data;
+ if (phb->removed)
+ 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) {
+ IODA_EEH_DBG("%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 (err_type == OPAL_EEH_NO_ERROR ||
+ severity == OPAL_EEH_SEV_NO_ERROR) {
+ IODA_EEH_DBG("%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.
+ */
+ IODA_EEH_DBG("%s: Error (%d, %d, %d) on PHB#%x\n",
+ err_type, severity, pe_no, hose->global_number);
+ switch (err_type) {
+ case OPAL_EEH_IOC_ERROR:
+ if (severity == OPAL_EEH_SEV_IOC_DEAD) {
+ list_for_each_entry_safe(hose, tmp,
+ &hose_list, list_node) {
+ phb = hose->private_data;
+ phb->removed = 1;
+ }
+
+ WARN(1, "EEH: dead IOC detected\n");
+ ret = 4;
+ goto out;
+ } else if (severity == OPAL_EEH_SEV_INF)
+ ioda_eeh_hub_diag(hose);
+
+ break;
+ case OPAL_EEH_PHB_ERROR:
+ if (severity == OPAL_EEH_SEV_PHB_DEAD) {
+ if (ioda_eeh_get_phb_pe(hose, pe))
+ break;
+
+ WARN(1, "EEH: dead PHB#%x detected\n",
+ hose->global_number);
+ phb->removed = 1;
+ ret = 3;
+ goto out;
+ } else if (severity == OPAL_EEH_SEV_PHB_FENCED) {
+ if (ioda_eeh_get_phb_pe(hose, pe))
+ break;
+
+ WARN(1, "EEH: fenced PHB#%x detected\n",
+ hose->global_number);
+ ret = 2;
+ goto out;
+ } else if (severity == OPAL_EEH_SEV_INF)
+ ioda_eeh_phb_diag(hose);
+
+ break;
+ case OPAL_EEH_PE_ERROR:
+ if (ioda_eeh_get_pe(hose, frozen_pe_no, pe))
+ break;
+
+ WARN(1, "EEH: Frozen PE#%x on PHB#%x detected\n",
+ (*pe)->addr, (*pe)->phb->global_number);
+ ret = 1;
+ goto out;
+ }
+ }
+
+ ret = 0;
+out:
+ return ret;
+}
+
struct pnv_eeh_ops ioda_eeh_ops = {
.post_init = ioda_eeh_post_init,
.set_option = ioda_eeh_set_option,
.reset = ioda_eeh_reset,
.get_log = ioda_eeh_get_log,
.configure_bridge = ioda_eeh_configure_bridge,
- .next_error = NULL
+ .next_error = ioda_eeh_next_error
};
projects / platform / kernel / linux-exynos.git / commitdiff