From: Viswas G <Viswas.G@microsemi.com>
To: linux-scsi@vger.kernel.org
Cc: Vasanthalakshmi.Tharmarajan@microsemi.com,
Viswas.G@microsemi.com, deepak.ukey@microsemi.com,
Raj.Dinesh@microsemi.com, jinpu.wang@profitbricks.com,
martin.petersen@oracle.com
Subject: [PATCH V4 7/9] pm80xx : corrected SATA abort handling sequence.
Date: Wed, 18 Oct 2017 11:39:13 +0530 [thread overview]
Message-ID: <20171018060915.8549-8-Viswas.G@microsemi.com> (raw)
In-Reply-To: <20171018060915.8549-1-Viswas.G@microsemi.com>
Modified SATA abort handling with following steps:
1) Set device state as recovery.
2) Send phy reset.
3) Wait for reset completion.
4) After successful reset, abort all IO's to the device.
5) After aborting all IO's to device, set device state as operational.
Signed-off-by: Deepak Ukey <deepak.ukey@microsemi.com>
Signed-off-by: Viswas G <Viswas.G@microsemi.com>
Acked-by: Jack Wang <jinpu.wang@profitbricks.com>
---
drivers/scsi/pm8001/pm8001_hwi.c | 8 ++++-
drivers/scsi/pm8001/pm8001_sas.c | 72 ++++++++++++++++++++++++++++++++++++++--
drivers/scsi/pm8001/pm8001_sas.h | 8 +++++
drivers/scsi/pm8001/pm80xx_hwi.c | 36 ++++++++++++++++----
4 files changed, 114 insertions(+), 10 deletions(-)
diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index bc4a6f649ec9..db88a8e7ee0e 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -3209,10 +3209,16 @@ int pm8001_mpi_local_phy_ctl(struct pm8001_hba_info *pm8001_ha, void *piomb)
PM8001_MSG_DBG(pm8001_ha,
pm8001_printk("%x phy execute %x phy op failed!\n",
phy_id, phy_op));
- } else
+ } else {
PM8001_MSG_DBG(pm8001_ha,
pm8001_printk("%x phy execute %x phy op success!\n",
phy_id, phy_op));
+ pm8001_ha->phy[phy_id].reset_success = true;
+ }
+ if (pm8001_ha->phy[phy_id].enable_completion) {
+ complete(pm8001_ha->phy[phy_id].enable_completion);
+ pm8001_ha->phy[phy_id].enable_completion = NULL;
+ }
pm8001_tag_free(pm8001_ha, tag);
return 0;
}
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index a7626a851b62..ce605a8d1c67 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -1166,13 +1166,16 @@ int pm8001_abort_task(struct sas_task *task)
struct scsi_lun lun;
struct pm8001_device *pm8001_dev;
struct pm8001_tmf_task tmf_task;
- int rc = TMF_RESP_FUNC_FAILED;
+ int rc = TMF_RESP_FUNC_FAILED, ret;
+ u32 phy_id;
+ struct sas_task_slow slow_task;
if (unlikely(!task || !task->lldd_task || !task->dev))
return TMF_RESP_FUNC_FAILED;
dev = task->dev;
pm8001_dev = dev->lldd_dev;
pm8001_ha = pm8001_find_ha_by_dev(dev);
device_id = pm8001_dev->device_id;
+ phy_id = pm8001_dev->attached_phy;
rc = pm8001_find_tag(task, &tag);
if (rc == 0) {
pm8001_printk("no tag for task:%p\n", task);
@@ -1183,6 +1186,11 @@ int pm8001_abort_task(struct sas_task *task)
spin_unlock_irqrestore(&task->task_state_lock, flags);
return TMF_RESP_FUNC_COMPLETE;
}
+ task->task_state_flags |= SAS_TASK_STATE_ABORTED;
+ if (task->slow_task == NULL) {
+ init_completion(&slow_task.completion);
+ task->slow_task = &slow_task;
+ }
spin_unlock_irqrestore(&task->task_state_lock, flags);
if (task->task_proto & SAS_PROTOCOL_SSP) {
struct scsi_cmnd *cmnd = task->uldd_task;
@@ -1194,14 +1202,72 @@ int pm8001_abort_task(struct sas_task *task)
pm8001_dev->sas_device, 0, tag);
} else if (task->task_proto & SAS_PROTOCOL_SATA ||
task->task_proto & SAS_PROTOCOL_STP) {
- rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
- pm8001_dev->sas_device, 0, tag);
+ if (pm8001_ha->chip_id == chip_8006) {
+ DECLARE_COMPLETION_ONSTACK(completion_reset);
+ DECLARE_COMPLETION_ONSTACK(completion);
+ struct pm8001_phy *phy = pm8001_ha->phy + phy_id;
+ /* 1. Set Device state as Recovery*/
+ pm8001_dev->setds_completion = &completion;
+ PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
+ pm8001_dev, 0x03);
+ wait_for_completion(&completion);
+ /* 2. Send Phy Control Hard Reset */
+ reinit_completion(&completion);
+ phy->reset_success = false;
+ phy->enable_completion = &completion;
+ phy->reset_completion = &completion_reset;
+ ret = PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
+ PHY_HARD_RESET);
+ if (ret)
+ goto out;
+ PM8001_MSG_DBG(pm8001_ha,
+ pm8001_printk("Waiting for local phy ctl\n"));
+ wait_for_completion(&completion);
+ if (!phy->reset_success)
+ goto out;
+ /* 3. Wait for Port Reset complete / Port reset TMO*/
+ PM8001_MSG_DBG(pm8001_ha,
+ pm8001_printk("Waiting for Port reset\n"));
+ wait_for_completion(&completion_reset);
+ if (phy->port_reset_status)
+ goto out;
+ /* 4. SATA Abort ALL
+ * we wait for the task to be aborted so that the task
+ * is removed from the ccb. on success the caller is
+ * going to free the task.
+ */
+ ret = pm8001_exec_internal_task_abort(pm8001_ha,
+ pm8001_dev, pm8001_dev->sas_device, 1, tag);
+ if (ret)
+ goto out;
+ ret = wait_for_completion_timeout(
+ &task->slow_task->completion,
+ PM8001_TASK_TIMEOUT * HZ);
+ if (!ret)
+ goto out;
+
+ /* 5. Set Device State as Operational */
+ reinit_completion(&completion);
+ pm8001_dev->setds_completion = &completion;
+ PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
+ pm8001_dev, 0x01);
+ wait_for_completion(&completion);
+ } else {
+ rc = pm8001_exec_internal_task_abort(pm8001_ha,
+ pm8001_dev, pm8001_dev->sas_device, 0, tag);
+ }
+ rc = TMF_RESP_FUNC_COMPLETE;
} else if (task->task_proto & SAS_PROTOCOL_SMP) {
/* SMP */
rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
pm8001_dev->sas_device, 0, tag);
}
+out:
+ spin_lock_irqsave(&task->task_state_lock, flags);
+ if (task->slow_task == &slow_task)
+ task->slow_task = NULL;
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
if (rc != TMF_RESP_FUNC_COMPLETE)
pm8001_printk("rc= %d\n", rc);
return rc;
diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h
index c75de413e062..80b4dd6df0c2 100644
--- a/drivers/scsi/pm8001/pm8001_sas.h
+++ b/drivers/scsi/pm8001/pm8001_sas.h
@@ -263,8 +263,15 @@ struct pm8001_phy {
u8 phy_state;
enum sas_linkrate minimum_linkrate;
enum sas_linkrate maximum_linkrate;
+ struct completion *reset_completion;
+ bool port_reset_status;
+ bool reset_success;
};
+/* port reset status */
+#define PORT_RESET_SUCCESS 0x00
+#define PORT_RESET_TMO 0x01
+
struct pm8001_device {
enum sas_device_type dev_type;
struct domain_device *sas_device;
@@ -533,6 +540,7 @@ struct pm8001_hba_info {
u32 smp_exp_mode;
const struct firmware *fw_image;
struct isr_param irq_vector[PM8001_MAX_MSIX_VEC];
+ u32 reset_in_progress;
};
struct pm8001_work {
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index 5d2a4a38bf73..f6df11a7c2d5 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -1781,6 +1781,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
"task 0x%p done with io_status 0x%x resp 0x%x "
"stat 0x%x but aborted by upper layer!\n",
t, status, ts->resp, ts->stat));
+ if (t->slow_task)
+ complete(&t->slow_task->completion);
pm8001_ccb_task_free(pm8001_ha, t, ccb, tag);
} else {
spin_unlock_irqrestore(&t->task_state_lock, flags);
@@ -3044,6 +3046,7 @@ hw_event_phy_down(struct pm8001_hba_info *pm8001_ha, void *piomb)
struct pm8001_port *port = &pm8001_ha->port[port_id];
struct pm8001_phy *phy = &pm8001_ha->phy[phy_id];
+ u32 port_sata = (phy->phy_type & PORT_TYPE_SATA);
port->port_state = portstate;
phy->identify.device_type = 0;
phy->phy_attached = 0;
@@ -3055,7 +3058,7 @@ hw_event_phy_down(struct pm8001_hba_info *pm8001_ha, void *piomb)
pm8001_printk(" PortInvalid portID %d\n", port_id));
PM8001_MSG_DBG(pm8001_ha,
pm8001_printk(" Last phy Down and port invalid\n"));
- if (phy->phy_type & PORT_TYPE_SATA) {
+ if (port_sata) {
phy->phy_type = 0;
port->port_attached = 0;
pm80xx_hw_event_ack_req(pm8001_ha, 0, HW_EVENT_PHY_DOWN,
@@ -3077,7 +3080,7 @@ hw_event_phy_down(struct pm8001_hba_info *pm8001_ha, void *piomb)
pm8001_printk(" Phy Down and PORT_LOSTCOMM\n"));
PM8001_MSG_DBG(pm8001_ha,
pm8001_printk(" Last phy Down and port invalid\n"));
- if (phy->phy_type & PORT_TYPE_SATA) {
+ if (port_sata) {
port->port_attached = 0;
phy->phy_type = 0;
pm80xx_hw_event_ack_req(pm8001_ha, 0, HW_EVENT_PHY_DOWN,
@@ -3093,6 +3096,11 @@ hw_event_phy_down(struct pm8001_hba_info *pm8001_ha, void *piomb)
break;
}
+ if (port_sata && (portstate != PORT_IN_RESET)) {
+ struct sas_ha_struct *sas_ha = pm8001_ha->sas;
+
+ sas_ha->notify_phy_event(&phy->sas_phy, PHYE_LOSS_OF_SIGNAL);
+ }
}
static int mpi_phy_start_resp(struct pm8001_hba_info *pm8001_ha, void *piomb)
@@ -3195,12 +3203,14 @@ static int mpi_hw_event(struct pm8001_hba_info *pm8001_ha, void *piomb)
case HW_EVENT_PHY_DOWN:
PM8001_MSG_DBG(pm8001_ha,
pm8001_printk("HW_EVENT_PHY_DOWN\n"));
- if (phy->phy_type & PORT_TYPE_SATA)
- sas_ha->notify_phy_event(&phy->sas_phy,
- PHYE_LOSS_OF_SIGNAL);
+ hw_event_phy_down(pm8001_ha, piomb);
+ if (pm8001_ha->reset_in_progress) {
+ PM8001_MSG_DBG(pm8001_ha,
+ pm8001_printk("Reset in progress\n"));
+ return 0;
+ }
phy->phy_attached = 0;
phy->phy_state = 0;
- hw_event_phy_down(pm8001_ha, piomb);
break;
case HW_EVENT_PORT_INVALID:
PM8001_MSG_DBG(pm8001_ha,
@@ -3307,9 +3317,17 @@ static int mpi_hw_event(struct pm8001_hba_info *pm8001_ha, void *piomb)
case HW_EVENT_PORT_RESET_TIMER_TMO:
PM8001_MSG_DBG(pm8001_ha,
pm8001_printk("HW_EVENT_PORT_RESET_TIMER_TMO\n"));
+ pm80xx_hw_event_ack_req(pm8001_ha, 0, HW_EVENT_PHY_DOWN,
+ port_id, phy_id, 0, 0);
sas_phy_disconnected(sas_phy);
phy->phy_attached = 0;
sas_ha->notify_port_event(sas_phy, PORTE_LINK_RESET_ERR);
+ if (pm8001_ha->phy[phy_id].reset_completion) {
+ pm8001_ha->phy[phy_id].port_reset_status =
+ PORT_RESET_TMO;
+ complete(pm8001_ha->phy[phy_id].reset_completion);
+ pm8001_ha->phy[phy_id].reset_completion = NULL;
+ }
break;
case HW_EVENT_PORT_RECOVERY_TIMER_TMO:
PM8001_MSG_DBG(pm8001_ha,
@@ -3334,6 +3352,12 @@ static int mpi_hw_event(struct pm8001_hba_info *pm8001_ha, void *piomb)
case HW_EVENT_PORT_RESET_COMPLETE:
PM8001_MSG_DBG(pm8001_ha,
pm8001_printk("HW_EVENT_PORT_RESET_COMPLETE\n"));
+ if (pm8001_ha->phy[phy_id].reset_completion) {
+ pm8001_ha->phy[phy_id].port_reset_status =
+ PORT_RESET_SUCCESS;
+ complete(pm8001_ha->phy[phy_id].reset_completion);
+ pm8001_ha->phy[phy_id].reset_completion = NULL;
+ }
break;
case EVENT_BROADCAST_ASYNCH_EVENT:
PM8001_MSG_DBG(pm8001_ha,
--
2.12.3
next prev parent reply other threads:[~2017-10-18 6:09 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-18 6:09 [PATCH V4 0/9] pm80xx updates Viswas G
2017-10-18 6:09 ` [PATCH V4 1/9] pm80xx : redefine sas_identify_frame structure Viswas G
2017-10-18 6:09 ` [PATCH V4 2/9] pm80xx : ILA and inactive firmware version through sysfs Viswas G
2017-10-18 6:09 ` [PATCH V4 3/9] pm80xx : Different SAS addresses for phys Viswas G
2017-10-18 6:09 ` [PATCH V4 4/9] pm80xx : tag allocation for phy control request Viswas G
2017-10-18 6:09 ` [PATCH V4 5/9] pm80xx : cleanup in pm8001_abort_task function Viswas G
2017-10-18 6:09 ` [PATCH V4 6/9] pm80xx : modified port reset timer value for PM8006 card Viswas G
2017-10-18 6:09 ` Viswas G [this message]
2017-10-18 6:09 ` [PATCH V4 8/9] pm80xx : panic on ncq error cleaning up the read log Viswas G
2017-10-18 6:09 ` [PATCH V4 9/9] pm80xx : corrected linkrate value Viswas G
2017-10-18 8:10 ` [PATCH V4 0/9] pm80xx updates Jinpu Wang
2017-10-19 2:12 ` Martin K. Petersen
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