struct srb *srb;
int rval;
+ if (test_bit(AF_EEH_BUSY, &ha->flags)) {
+ if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
+ cmd->result = DID_NO_CONNECT << 16;
+ else
+ cmd->result = DID_REQUEUE << 16;
+ goto qc_fail_command;
+ }
+
if (!sess) {
cmd->result = DID_IMM_RETRY << 16;
goto qc_fail_command;
uint32_t fw_heartbeat_counter, halt_status;
fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER);
+ /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
+ if (fw_heartbeat_counter == 0xffffffff) {
+ DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
+ "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
+ ha->host_no, __func__));
+ return;
+ }
if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
ha->seconds_since_last_heartbeat++;
{
struct ddb_entry *ddb_entry, *dtemp;
int start_dpc = 0;
+ uint16_t w;
+
+ /* If we are in the middle of AER/EEH processing
+ * skip any processing and reschedule the timer
+ */
+ if (test_bit(AF_EEH_BUSY, &ha->flags)) {
+ mod_timer(&ha->timer, jiffies + HZ);
+ return;
+ }
+
+ /* Hardware read to trigger an EEH error during mailbox waits. */
+ if (!pci_channel_offline(ha->pdev))
+ pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
if (test_bit(AF_HBA_GOING_AWAY, &ha->flags)) {
DEBUG2(ql4_printk(KERN_INFO, ha, "%s exited. HBA GOING AWAY\n",
if (!test_bit(AF_INIT_DONE, &ha->flags))
goto do_dpc_exit;
+ if (test_bit(AF_EEH_BUSY, &ha->flags)) {
+ DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
+ ha->host_no, __func__, ha->flags));
+ goto do_dpc_exit;
+ }
+
/* HBA is in the process of being permanently disabled.
* Don't process anything */
if (test_bit(AF_HBA_GOING_AWAY, &ha->flags))
ha->host = host;
ha->host_no = host->host_no;
+ pci_enable_pcie_error_reporting(pdev);
+
/* Setup Runtime configurable options */
if (is_qla8022(ha)) {
ha->isp_ops = &qla4_8xxx_isp_ops;
ha->isp_ops = &qla4xxx_isp_ops;
}
+ /* Set EEH reset type to fundamental if required by hba */
+ if (is_qla8022(ha))
+ pdev->needs_freset = 1;
+
/* Configure PCI I/O space. */
ret = ha->isp_ops->iospace_config(ha);
if (ret)
}
}
+ pci_save_state(ha->pdev);
ha->isp_ops->enable_intrs(ha);
/* Start timer thread. */
qla4xxx_free_adapter(ha);
probe_failed_ioconfig:
+ pci_disable_pcie_error_reporting(pdev);
scsi_host_put(ha->host);
probe_disable_device:
scsi_host_put(ha->host);
+ pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
}
int done = 0;
struct srb *rp;
uint32_t max_wait_time = EH_WAIT_CMD_TOV;
+ int ret = SUCCESS;
+
+ /* Dont wait on command if PCI error is being handled
+ * by PCI AER driver
+ */
+ if (unlikely(pci_channel_offline(ha->pdev)) ||
+ (test_bit(AF_EEH_BUSY, &ha->flags))) {
+ ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
+ ha->host_no, __func__);
+ return ret;
+ }
do {
/* Checking to see if its returned to OS */
return return_status;
}
+/* PCI AER driver recovers from all correctable errors w/o
+ * driver intervention. For uncorrectable errors PCI AER
+ * driver calls the following device driver's callbacks
+ *
+ * - Fatal Errors - link_reset
+ * - Non-Fatal Errors - driver's pci_error_detected() which
+ * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
+ *
+ * PCI AER driver calls
+ * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
+ * returns RECOVERED or NEED_RESET if fw_hung
+ * NEED_RESET - driver's slot_reset()
+ * DISCONNECT - device is dead & cannot recover
+ * RECOVERED - driver's pci_resume()
+ */
+static pci_ers_result_t
+qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
+{
+ struct scsi_qla_host *ha = pci_get_drvdata(pdev);
+
+ ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
+ ha->host_no, __func__, state);
+
+ if (!is_aer_supported(ha))
+ return PCI_ERS_RESULT_NONE;
+
+ switch (state) {
+ case pci_channel_io_normal:
+ clear_bit(AF_EEH_BUSY, &ha->flags);
+ return PCI_ERS_RESULT_CAN_RECOVER;
+ case pci_channel_io_frozen:
+ set_bit(AF_EEH_BUSY, &ha->flags);
+ qla4xxx_mailbox_premature_completion(ha);
+ qla4xxx_free_irqs(ha);
+ pci_disable_device(pdev);
+ return PCI_ERS_RESULT_NEED_RESET;
+ case pci_channel_io_perm_failure:
+ set_bit(AF_EEH_BUSY, &ha->flags);
+ set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
+ qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+ return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * qla4xxx_pci_mmio_enabled() gets called if
+ * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
+ * and read/write to the device still works.
+ **/
+static pci_ers_result_t
+qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
+{
+ struct scsi_qla_host *ha = pci_get_drvdata(pdev);
+
+ if (!is_aer_supported(ha))
+ return PCI_ERS_RESULT_NONE;
+
+ if (test_bit(AF_FW_RECOVERY, &ha->flags)) {
+ ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: firmware hang -- "
+ "mmio_enabled\n", ha->host_no, __func__);
+ return PCI_ERS_RESULT_NEED_RESET;
+ } else
+ return PCI_ERS_RESULT_RECOVERED;
+}
+
+uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
+{
+ uint32_t rval = QLA_ERROR;
+ int fn;
+ struct pci_dev *other_pdev = NULL;
+
+ ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
+
+ set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
+
+ if (test_bit(AF_ONLINE, &ha->flags)) {
+ clear_bit(AF_ONLINE, &ha->flags);
+ qla4xxx_mark_all_devices_missing(ha);
+ qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+ qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
+ }
+
+ fn = PCI_FUNC(ha->pdev->devfn);
+ while (fn > 0) {
+ fn--;
+ ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
+ "func %x\n", ha->host_no, __func__, fn);
+ /* Get the pci device given the domain, bus,
+ * slot/function number */
+ other_pdev =
+ pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
+ ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
+ fn));
+
+ if (!other_pdev)
+ continue;
+
+ if (atomic_read(&other_pdev->enable_cnt)) {
+ ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
+ "func in enabled state%x\n", ha->host_no,
+ __func__, fn);
+ pci_dev_put(other_pdev);
+ break;
+ }
+ pci_dev_put(other_pdev);
+ }
+
+ /* The first function on the card, the reset owner will
+ * start & initialize the firmware. The other functions
+ * on the card will reset the firmware context
+ */
+ if (!fn) {
+ ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
+ "0x%x is the owner\n", ha->host_no, __func__,
+ ha->pdev->devfn);
+
+ qla4_8xxx_idc_lock(ha);
+ qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
+ QLA82XX_DEV_COLD);
+
+ qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION,
+ QLA82XX_IDC_VERSION);
+
+ qla4_8xxx_idc_unlock(ha);
+ clear_bit(AF_FW_RECOVERY, &ha->flags);
+ rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST);
+ qla4_8xxx_idc_lock(ha);
+
+ if (rval != QLA_SUCCESS) {
+ ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
+ "FAILED\n", ha->host_no, __func__);
+ qla4_8xxx_clear_drv_active(ha);
+ qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
+ QLA82XX_DEV_FAILED);
+ } else {
+ ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
+ "READY\n", ha->host_no, __func__);
+ qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
+ QLA82XX_DEV_READY);
+ /* Clear driver state register */
+ qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0);
+ qla4_8xxx_set_drv_active(ha);
+ ha->isp_ops->enable_intrs(ha);
+ }
+ qla4_8xxx_idc_unlock(ha);
+ } else {
+ ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
+ "the reset owner\n", ha->host_no, __func__,
+ ha->pdev->devfn);
+ if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) ==
+ QLA82XX_DEV_READY)) {
+ clear_bit(AF_FW_RECOVERY, &ha->flags);
+ rval = qla4xxx_initialize_adapter(ha,
+ PRESERVE_DDB_LIST);
+ if (rval == QLA_SUCCESS)
+ ha->isp_ops->enable_intrs(ha);
+ qla4_8xxx_idc_lock(ha);
+ qla4_8xxx_set_drv_active(ha);
+ qla4_8xxx_idc_unlock(ha);
+ }
+ }
+ clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
+ return rval;
+}
+
+static pci_ers_result_t
+qla4xxx_pci_slot_reset(struct pci_dev *pdev)
+{
+ pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
+ struct scsi_qla_host *ha = pci_get_drvdata(pdev);
+ int rc;
+
+ ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
+ ha->host_no, __func__);
+
+ if (!is_aer_supported(ha))
+ return PCI_ERS_RESULT_NONE;
+
+ /* Restore the saved state of PCIe device -
+ * BAR registers, PCI Config space, PCIX, MSI,
+ * IOV states
+ */
+ pci_restore_state(pdev);
+
+ /* pci_restore_state() clears the saved_state flag of the device
+ * save restored state which resets saved_state flag
+ */
+ pci_save_state(pdev);
+
+ /* Initialize device or resume if in suspended state */
+ rc = pci_enable_device(pdev);
+ if (rc) {
+ ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Cant re-enable "
+ "device after reset\n", ha->host_no, __func__);
+ goto exit_slot_reset;
+ }
+
+ ret = qla4xxx_request_irqs(ha);
+ if (ret) {
+ ql4_printk(KERN_WARNING, ha, "Failed to reserve interrupt %d"
+ " already in use.\n", pdev->irq);
+ goto exit_slot_reset;
+ }
+
+ if (is_qla8022(ha)) {
+ if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
+ ret = PCI_ERS_RESULT_RECOVERED;
+ goto exit_slot_reset;
+ } else
+ goto exit_slot_reset;
+ }
+
+exit_slot_reset:
+ ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
+ "device after reset\n", ha->host_no, __func__, ret);
+ return ret;
+}
+
+static void
+qla4xxx_pci_resume(struct pci_dev *pdev)
+{
+ struct scsi_qla_host *ha = pci_get_drvdata(pdev);
+ int ret;
+
+ ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
+ ha->host_no, __func__);
+
+ ret = qla4xxx_wait_for_hba_online(ha);
+ if (ret != QLA_SUCCESS) {
+ ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
+ "resume I/O from slot/link_reset\n", ha->host_no,
+ __func__);
+ }
+
+ pci_cleanup_aer_uncorrect_error_status(pdev);
+ clear_bit(AF_EEH_BUSY, &ha->flags);
+}
+
+static struct pci_error_handlers qla4xxx_err_handler = {
+ .error_detected = qla4xxx_pci_error_detected,
+ .mmio_enabled = qla4xxx_pci_mmio_enabled,
+ .slot_reset = qla4xxx_pci_slot_reset,
+ .resume = qla4xxx_pci_resume,
+};
+
static struct pci_device_id qla4xxx_pci_tbl[] = {
{
.vendor = PCI_VENDOR_ID_QLOGIC,
.id_table = qla4xxx_pci_tbl,
.probe = qla4xxx_probe_adapter,
.remove = qla4xxx_remove_adapter,
+ .err_handler = &qla4xxx_err_handler,
};
static int __init qla4xxx_module_init(void)
projects / platform / kernel / linux-exynos.git / commitdiff