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path: root/drivers/scsi/qla2xxx/qla_os.c
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Diffstat (limited to 'drivers/scsi/qla2xxx/qla_os.c')
-rw-r--r--drivers/scsi/qla2xxx/qla_os.c173
1 files changed, 104 insertions, 69 deletions
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index cb4155f8fd44..12959e3874cb 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -971,6 +971,13 @@ qla2xxx_mqueuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd,
goto qc24_fail_command;
}
+ if (!qpair->online) {
+ ql_dbg(ql_dbg_io, vha, 0x3077,
+ "qpair not online. eeh_busy=%d.\n", ha->flags.eeh_busy);
+ cmd->result = DID_NO_CONNECT << 16;
+ goto qc24_fail_command;
+ }
+
if (!fcport || fcport->deleted) {
cmd->result = DID_IMM_RETRY << 16;
goto qc24_fail_command;
@@ -1200,35 +1207,6 @@ qla2x00_wait_for_chip_reset(scsi_qla_host_t *vha)
return return_status;
}
-#define ISP_REG_DISCONNECT 0xffffffffU
-/**************************************************************************
-* qla2x00_isp_reg_stat
-*
-* Description:
-* Read the host status register of ISP before aborting the command.
-*
-* Input:
-* ha = pointer to host adapter structure.
-*
-*
-* Returns:
-* Either true or false.
-*
-* Note: Return true if there is register disconnect.
-**************************************************************************/
-static inline
-uint32_t qla2x00_isp_reg_stat(struct qla_hw_data *ha)
-{
- struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
- struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
-
- if (IS_P3P_TYPE(ha))
- return ((rd_reg_dword(&reg82->host_int)) == ISP_REG_DISCONNECT);
- else
- return ((rd_reg_dword(&reg->host_status)) ==
- ISP_REG_DISCONNECT);
-}
-
/**************************************************************************
* qla2xxx_eh_abort
*
@@ -1262,6 +1240,7 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
if (qla2x00_isp_reg_stat(ha)) {
ql_log(ql_log_info, vha, 0x8042,
"PCI/Register disconnect, exiting.\n");
+ qla_pci_set_eeh_busy(vha);
return FAILED;
}
@@ -1455,6 +1434,7 @@ qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
if (qla2x00_isp_reg_stat(ha)) {
ql_log(ql_log_info, vha, 0x803e,
"PCI/Register disconnect, exiting.\n");
+ qla_pci_set_eeh_busy(vha);
return FAILED;
}
@@ -1471,6 +1451,7 @@ qla2xxx_eh_target_reset(struct scsi_cmnd *cmd)
if (qla2x00_isp_reg_stat(ha)) {
ql_log(ql_log_info, vha, 0x803f,
"PCI/Register disconnect, exiting.\n");
+ qla_pci_set_eeh_busy(vha);
return FAILED;
}
@@ -1506,6 +1487,7 @@ qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
if (qla2x00_isp_reg_stat(ha)) {
ql_log(ql_log_info, vha, 0x8040,
"PCI/Register disconnect, exiting.\n");
+ qla_pci_set_eeh_busy(vha);
return FAILED;
}
@@ -1583,7 +1565,7 @@ qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
if (qla2x00_isp_reg_stat(ha)) {
ql_log(ql_log_info, vha, 0x8041,
"PCI/Register disconnect, exiting.\n");
- schedule_work(&ha->board_disable);
+ qla_pci_set_eeh_busy(vha);
return SUCCESS;
}
@@ -6668,6 +6650,9 @@ qla2x00_do_dpc(void *data)
schedule();
+ if (test_and_clear_bit(DO_EEH_RECOVERY, &base_vha->dpc_flags))
+ qla_pci_set_eeh_busy(base_vha);
+
if (!base_vha->flags.init_done || ha->flags.mbox_busy)
goto end_loop;
@@ -7384,6 +7369,8 @@ static void qla_pci_error_cleanup(scsi_qla_host_t *vha)
int i;
unsigned long flags;
+ ql_dbg(ql_dbg_aer, vha, 0x9000,
+ "%s\n", __func__);
ha->chip_reset++;
ha->base_qpair->chip_reset = ha->chip_reset;
@@ -7393,28 +7380,16 @@ static void qla_pci_error_cleanup(scsi_qla_host_t *vha)
ha->base_qpair->chip_reset;
}
- /* purge MBox commands */
- if (atomic_read(&ha->num_pend_mbx_stage3)) {
- clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);
- complete(&ha->mbx_intr_comp);
- }
-
- i = 0;
-
- while (atomic_read(&ha->num_pend_mbx_stage3) ||
- atomic_read(&ha->num_pend_mbx_stage2) ||
- atomic_read(&ha->num_pend_mbx_stage1)) {
- msleep(20);
- i++;
- if (i > 50)
- break;
- }
-
- ha->flags.purge_mbox = 0;
+ /*
+ * purge mailbox might take a while. Slot Reset/chip reset
+ * will take care of the purge
+ */
mutex_lock(&ha->mq_lock);
+ ha->base_qpair->online = 0;
list_for_each_entry(qpair, &base_vha->qp_list, qp_list_elem)
qpair->online = 0;
+ wmb();
mutex_unlock(&ha->mq_lock);
qla2x00_mark_all_devices_lost(vha);
@@ -7451,14 +7426,17 @@ qla2xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
{
scsi_qla_host_t *vha = pci_get_drvdata(pdev);
struct qla_hw_data *ha = vha->hw;
+ pci_ers_result_t ret = PCI_ERS_RESULT_NEED_RESET;
- ql_dbg(ql_dbg_aer, vha, 0x9000,
- "PCI error detected, state %x.\n", state);
+ ql_log(ql_log_warn, vha, 0x9000,
+ "PCI error detected, state %x.\n", state);
+ ha->pci_error_state = QLA_PCI_ERR_DETECTED;
if (!atomic_read(&pdev->enable_cnt)) {
ql_log(ql_log_info, vha, 0xffff,
"PCI device is disabled,state %x\n", state);
- return PCI_ERS_RESULT_NEED_RESET;
+ ret = PCI_ERS_RESULT_NEED_RESET;
+ goto out;
}
switch (state) {
@@ -7468,11 +7446,12 @@ qla2xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
set_bit(QPAIR_ONLINE_CHECK_NEEDED, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
}
- return PCI_ERS_RESULT_CAN_RECOVER;
+ ret = PCI_ERS_RESULT_CAN_RECOVER;
+ break;
case pci_channel_io_frozen:
- ha->flags.eeh_busy = 1;
- qla_pci_error_cleanup(vha);
- return PCI_ERS_RESULT_NEED_RESET;
+ qla_pci_set_eeh_busy(vha);
+ ret = PCI_ERS_RESULT_NEED_RESET;
+ break;
case pci_channel_io_perm_failure:
ha->flags.pci_channel_io_perm_failure = 1;
qla2x00_abort_all_cmds(vha, DID_NO_CONNECT << 16);
@@ -7480,9 +7459,12 @@ qla2xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
set_bit(QPAIR_ONLINE_CHECK_NEEDED, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
}
- return PCI_ERS_RESULT_DISCONNECT;
+ ret = PCI_ERS_RESULT_DISCONNECT;
}
- return PCI_ERS_RESULT_NEED_RESET;
+out:
+ ql_dbg(ql_dbg_aer, vha, 0x600d,
+ "PCI error detected returning [%x].\n", ret);
+ return ret;
}
static pci_ers_result_t
@@ -7496,6 +7478,10 @@ qla2xxx_pci_mmio_enabled(struct pci_dev *pdev)
struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
+ ql_log(ql_log_warn, base_vha, 0x9000,
+ "mmio enabled\n");
+
+ ha->pci_error_state = QLA_PCI_MMIO_ENABLED;
if (IS_QLA82XX(ha))
return PCI_ERS_RESULT_RECOVERED;
@@ -7519,10 +7505,11 @@ qla2xxx_pci_mmio_enabled(struct pci_dev *pdev)
ql_log(ql_log_info, base_vha, 0x9003,
"RISC paused -- mmio_enabled, Dumping firmware.\n");
qla2xxx_dump_fw(base_vha);
-
- return PCI_ERS_RESULT_NEED_RESET;
- } else
- return PCI_ERS_RESULT_RECOVERED;
+ }
+ /* set PCI_ERS_RESULT_NEED_RESET to trigger call to qla2xxx_pci_slot_reset */
+ ql_dbg(ql_dbg_aer, base_vha, 0x600d,
+ "mmio enabled returning.\n");
+ return PCI_ERS_RESULT_NEED_RESET;
}
static pci_ers_result_t
@@ -7534,9 +7521,10 @@ qla2xxx_pci_slot_reset(struct pci_dev *pdev)
int rc;
struct qla_qpair *qpair = NULL;
- ql_dbg(ql_dbg_aer, base_vha, 0x9004,
- "Slot Reset.\n");
+ ql_log(ql_log_warn, base_vha, 0x9004,
+ "Slot Reset.\n");
+ ha->pci_error_state = QLA_PCI_SLOT_RESET;
/* Workaround: qla2xxx driver which access hardware earlier
* needs error state to be pci_channel_io_online.
* Otherwise mailbox command timesout.
@@ -7570,16 +7558,24 @@ qla2xxx_pci_slot_reset(struct pci_dev *pdev)
qpair->online = 1;
mutex_unlock(&ha->mq_lock);
+ ha->flags.eeh_busy = 0;
base_vha->flags.online = 1;
set_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
- if (ha->isp_ops->abort_isp(base_vha) == QLA_SUCCESS)
- ret = PCI_ERS_RESULT_RECOVERED;
+ ha->isp_ops->abort_isp(base_vha);
clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
+ if (qla2x00_isp_reg_stat(ha)) {
+ ha->flags.eeh_busy = 1;
+ qla_pci_error_cleanup(base_vha);
+ ql_log(ql_log_warn, base_vha, 0x9005,
+ "Device unable to recover from PCI error.\n");
+ } else {
+ ret = PCI_ERS_RESULT_RECOVERED;
+ }
exit_slot_reset:
ql_dbg(ql_dbg_aer, base_vha, 0x900e,
- "slot_reset return %x.\n", ret);
+ "Slot Reset returning %x.\n", ret);
return ret;
}
@@ -7591,16 +7587,55 @@ qla2xxx_pci_resume(struct pci_dev *pdev)
struct qla_hw_data *ha = base_vha->hw;
int ret;
- ql_dbg(ql_dbg_aer, base_vha, 0x900f,
- "pci_resume.\n");
+ ql_log(ql_log_warn, base_vha, 0x900f,
+ "Pci Resume.\n");
- ha->flags.eeh_busy = 0;
ret = qla2x00_wait_for_hba_online(base_vha);
if (ret != QLA_SUCCESS) {
ql_log(ql_log_fatal, base_vha, 0x9002,
"The device failed to resume I/O from slot/link_reset.\n");
}
+ ha->pci_error_state = QLA_PCI_RESUME;
+ ql_dbg(ql_dbg_aer, base_vha, 0x600d,
+ "Pci Resume returning.\n");
+}
+
+void qla_pci_set_eeh_busy(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
+ bool do_cleanup = false;
+ unsigned long flags;
+
+ if (ha->flags.eeh_busy)
+ return;
+
+ spin_lock_irqsave(&base_vha->work_lock, flags);
+ if (!ha->flags.eeh_busy) {
+ ha->flags.eeh_busy = 1;
+ do_cleanup = true;
+ }
+ spin_unlock_irqrestore(&base_vha->work_lock, flags);
+
+ if (do_cleanup)
+ qla_pci_error_cleanup(base_vha);
+}
+
+/*
+ * this routine will schedule a task to pause IO from interrupt context
+ * if caller sees a PCIE error event (register read = 0xf's)
+ */
+void qla_schedule_eeh_work(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
+
+ if (ha->flags.eeh_busy)
+ return;
+
+ set_bit(DO_EEH_RECOVERY, &base_vha->dpc_flags);
+ qla2xxx_wake_dpc(base_vha);
}
static void