uint32_t disable_msix_handshake :1;
uint32_t fcp_prio_enabled :1;
uint32_t fw_hung :1;
+ uint32_t quiesce_owner:1;
+ /* 29 bits */
} flags;
/* This spinlock is used to protect "io transactions", you must
#define ISP_UNRECOVERABLE 17
#define FCOE_CTX_RESET_NEEDED 18 /* Initiate FCoE context reset */
#define MPI_RESET_NEEDED 19 /* Initiate MPI FW reset */
+#define ISP_QUIESCE_NEEDED 20 /* Driver need some quiescence */
uint32_t device_flags;
#define SWITCH_FOUND BIT_0
extern int qla24xx_load_risc(scsi_qla_host_t *, uint32_t *);
extern int qla81xx_load_risc(scsi_qla_host_t *, uint32_t *);
+extern int qla2x00_perform_loop_resync(scsi_qla_host_t *);
extern int qla2x00_loop_resync(scsi_qla_host_t *);
extern int qla2x00_fabric_login(scsi_qla_host_t *, fc_port_t *, uint16_t *);
extern int qla2x00_abort_isp(scsi_qla_host_t *);
extern void qla2x00_abort_isp_cleanup(scsi_qla_host_t *);
+extern void qla82xx_quiescent_state_cleanup(scsi_qla_host_t *);
extern void qla2x00_update_fcport(scsi_qla_host_t *, fc_port_t *);
/* ISP 8021 IDC */
extern void qla82xx_clear_drv_active(struct qla_hw_data *);
+extern uint32_t qla82xx_wait_for_state_change(scsi_qla_host_t *, uint32_t);
extern int qla82xx_idc_lock(struct qla_hw_data *);
extern void qla82xx_idc_unlock(struct qla_hw_data *);
extern int qla82xx_device_state_handler(scsi_qla_host_t *);
+extern void qla82xx_clear_qsnt_ready(scsi_qla_host_t *);
extern void qla2x00_set_model_info(scsi_qla_host_t *, uint8_t *,
size_t, char *);
return (rval);
}
+/*
+* qla2x00_perform_loop_resync
+* Description: This function will set the appropriate flags and call
+* qla2x00_loop_resync. If successful loop will be resynced
+* Arguments : scsi_qla_host_t pointer
+* returm : Success or Failure
+*/
+
+int qla2x00_perform_loop_resync(scsi_qla_host_t *ha)
+{
+ int32_t rval = 0;
+
+ if (!test_and_set_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags)) {
+ /*Configure the flags so that resync happens properly*/
+ atomic_set(&ha->loop_down_timer, 0);
+ if (!(ha->device_flags & DFLG_NO_CABLE)) {
+ atomic_set(&ha->loop_state, LOOP_UP);
+ set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
+ set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
+ set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
+
+ rval = qla2x00_loop_resync(ha);
+ } else
+ atomic_set(&ha->loop_state, LOOP_DEAD);
+
+ clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
+ }
+
+ return rval;
+}
+
void
qla2x00_update_fcports(scsi_qla_host_t *base_vha)
{
spin_unlock_irqrestore(&ha->vport_slock, flags);
}
+/*
+* qla82xx_quiescent_state_cleanup
+* Description: This function will block the new I/Os
+* Its not aborting any I/Os as context
+* is not destroyed during quiescence
+* Arguments: scsi_qla_host_t
+* return : void
+*/
+void
+qla82xx_quiescent_state_cleanup(scsi_qla_host_t *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct scsi_qla_host *vp;
+
+ qla_printk(KERN_INFO, ha,
+ "Performing ISP error recovery - ha= %p.\n", ha);
+
+ atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
+ if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
+ atomic_set(&vha->loop_state, LOOP_DOWN);
+ qla2x00_mark_all_devices_lost(vha, 0);
+ list_for_each_entry(vp, &ha->vp_list, list)
+ qla2x00_mark_all_devices_lost(vha, 0);
+ } else {
+ if (!atomic_read(&vha->loop_down_timer))
+ atomic_set(&vha->loop_down_timer,
+ LOOP_DOWN_TIME);
+ }
+ /* Wait for pending cmds to complete */
+ qla2x00_eh_wait_for_pending_commands(vha, 0, 0, WAIT_HOST);
+}
+
void
qla2x00_abort_isp_cleanup(scsi_qla_host_t *vha)
{
struct qla_hw_data *ha = vha->hw;
- struct scsi_qla_host *vp, *base_vha = pci_get_drvdata(ha->pdev);
+ struct scsi_qla_host *vp;
unsigned long flags;
vha->flags.online = 0;
qla2x00_mark_all_devices_lost(vha, 0);
spin_lock_irqsave(&ha->vport_slock, flags);
- list_for_each_entry(vp, &base_vha->hw->vp_list, list) {
+ list_for_each_entry(vp, &ha->vp_list, list) {
atomic_inc(&vp->vref_count);
spin_unlock_irqrestore(&ha->vport_slock, flags);
qla82xx_wr_32(ha, QLA82XX_CRB_DRV_STATE, qsnt_state);
}
+void
+qla82xx_clear_qsnt_ready(scsi_qla_host_t *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ uint32_t qsnt_state;
+
+ qsnt_state = qla82xx_rd_32(ha, QLA82XX_CRB_DRV_STATE);
+ qsnt_state &= ~(QLA82XX_DRVST_QSNT_RDY << (ha->portnum * 4));
+ qla82xx_wr_32(ha, QLA82XX_CRB_DRV_STATE, qsnt_state);
+}
+
static int
qla82xx_load_fw(scsi_qla_host_t *vha)
{
return QLA_SUCCESS;
}
+/*
+* qla82xx_need_qsnt_handler
+* Code to start quiescence sequence
+*
+* Note:
+* IDC lock must be held upon entry
+*
+* Return: void
+*/
+
+static void
+qla82xx_need_qsnt_handler(scsi_qla_host_t *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ uint32_t dev_state, drv_state, drv_active;
+ unsigned long reset_timeout;
+
+ if (vha->flags.online) {
+ /*Block any further I/O and wait for pending cmnds to complete*/
+ qla82xx_quiescent_state_cleanup(vha);
+ }
+
+ /* Set the quiescence ready bit */
+ qla82xx_set_qsnt_ready(ha);
+
+ /*wait for 30 secs for other functions to ack */
+ reset_timeout = jiffies + (30 * HZ);
+
+ drv_state = qla82xx_rd_32(ha, QLA82XX_CRB_DRV_STATE);
+ drv_active = qla82xx_rd_32(ha, QLA82XX_CRB_DRV_ACTIVE);
+ /* Its 2 that is written when qsnt is acked, moving one bit */
+ drv_active = drv_active << 0x01;
+
+ while (drv_state != drv_active) {
+
+ if (time_after_eq(jiffies, reset_timeout)) {
+ /* quiescence timeout, other functions didn't ack
+ * changing the state to DEV_READY
+ */
+ qla_printk(KERN_INFO, ha,
+ "%s: QUIESCENT TIMEOUT\n", QLA2XXX_DRIVER_NAME);
+ qla_printk(KERN_INFO, ha,
+ "DRV_ACTIVE:%d DRV_STATE:%d\n", drv_active,
+ drv_state);
+ qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
+ QLA82XX_DEV_READY);
+ qla_printk(KERN_INFO, ha,
+ "HW State: DEV_READY\n");
+ qla82xx_idc_unlock(ha);
+ qla2x00_perform_loop_resync(vha);
+ qla82xx_idc_lock(ha);
+
+ qla82xx_clear_qsnt_ready(vha);
+ return;
+ }
+
+ qla82xx_idc_unlock(ha);
+ msleep(1000);
+ qla82xx_idc_lock(ha);
+
+ drv_state = qla82xx_rd_32(ha, QLA82XX_CRB_DRV_STATE);
+ drv_active = qla82xx_rd_32(ha, QLA82XX_CRB_DRV_ACTIVE);
+ drv_active = drv_active << 0x01;
+ }
+ dev_state = qla82xx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
+ /* everyone acked so set the state to DEV_QUIESCENCE */
+ if (dev_state == QLA82XX_DEV_NEED_QUIESCENT) {
+ qla_printk(KERN_INFO, ha, "HW State: DEV_QUIESCENT\n");
+ qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE, QLA82XX_DEV_QUIESCENT);
+ }
+}
+
+/*
+* qla82xx_wait_for_state_change
+* Wait for device state to change from given current state
+*
+* Note:
+* IDC lock must not be held upon entry
+*
+* Return:
+* Changed device state.
+*/
+uint32_t
+qla82xx_wait_for_state_change(scsi_qla_host_t *vha, uint32_t curr_state)
+{
+ struct qla_hw_data *ha = vha->hw;
+ uint32_t dev_state;
+
+ do {
+ msleep(1000);
+ qla82xx_idc_lock(ha);
+ dev_state = qla82xx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
+ qla82xx_idc_unlock(ha);
+ } while (dev_state == curr_state);
+
+ return dev_state;
+}
+
static void
qla82xx_dev_failed_handler(scsi_qla_host_t *vha)
{
qla82xx_need_reset_handler(vha);
break;
case QLA82XX_DEV_NEED_QUIESCENT:
- qla82xx_set_qsnt_ready(ha);
+ qla82xx_need_qsnt_handler(vha);
+ /* Reset timeout value after quiescence handler */
+ dev_init_timeout = jiffies + (ha->nx_dev_init_timeout\
+ * HZ);
+ break;
case QLA82XX_DEV_QUIESCENT:
+ /* Owner will exit and other will wait for the state
+ * to get changed
+ */
+ if (ha->flags.quiesce_owner)
+ goto exit;
+
qla82xx_idc_unlock(ha);
msleep(1000);
qla82xx_idc_lock(ha);
+
+ /* Reset timeout value after quiescence handler */
+ dev_init_timeout = jiffies + (ha->nx_dev_init_timeout\
+ * HZ);
break;
case QLA82XX_DEV_FAILED:
qla82xx_dev_failed_handler(vha);
&ha->mbx_cmd_flags))
complete(&ha->mbx_intr_comp);
}
+ } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT &&
+ !test_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags)) {
+ DEBUG(qla_printk(KERN_INFO, ha,
+ "scsi(%ld) %s - detected quiescence needed\n",
+ vha->host_no, __func__));
+ set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
} else {
qla82xx_check_fw_alive(vha);
}
clear_bit(FCPORT_UPDATE_NEEDED, &base_vha->dpc_flags);
}
+ if (test_bit(ISP_QUIESCE_NEEDED, &base_vha->dpc_flags)) {
+ DEBUG(printk(KERN_INFO "scsi(%ld): dpc: sched "
+ "qla2x00_quiesce_needed ha = %p\n",
+ base_vha->host_no, ha));
+ qla82xx_device_state_handler(base_vha);
+ clear_bit(ISP_QUIESCE_NEEDED, &base_vha->dpc_flags);
+ if (!ha->flags.quiesce_owner) {
+ qla2x00_perform_loop_resync(base_vha);
+
+ qla82xx_idc_lock(ha);
+ qla82xx_clear_qsnt_ready(base_vha);
+ qla82xx_idc_unlock(ha);
+ }
+ }
+
if (test_and_clear_bit(RESET_MARKER_NEEDED,
&base_vha->dpc_flags) &&
(!(test_and_set_bit(RESET_ACTIVE, &base_vha->dpc_flags)))) {
return;
}
- if (IS_QLA82XX(ha))
- qla82xx_watchdog(vha);
-
/* Hardware read to raise pending EEH errors during mailbox waits. */
if (!pci_channel_offline(ha->pdev))
pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
+ if (IS_QLA82XX(ha)) {
+ if (test_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags))
+ start_dpc++;
+ qla82xx_watchdog(vha);
+ }
+
/* Loop down handler. */
if (atomic_read(&vha->loop_down_timer) > 0 &&
!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
projects / linux-beck.git / commitdiff