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-rw-r--r--drivers/scsi/pm8001/pm8001_hwi.c196
-rw-r--r--drivers/scsi/pm8001/pm8001_sas.c72
-rw-r--r--drivers/scsi/pm8001/pm8001_sas.h5
3 files changed, 261 insertions, 12 deletions
diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index f3c44b96c1c9..3920b49f4f57 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -622,7 +622,8 @@ static int __devinit pm8001_chip_init(struct pm8001_hba_info *pm8001_ha)
update_inbnd_queue_table(pm8001_ha, 0);
update_outbnd_queue_table(pm8001_ha, 0);
mpi_set_phys_g3_with_ssc(pm8001_ha, 0);
- mpi_set_open_retry_interval_reg(pm8001_ha, 7);
+ /* 7->130ms, 34->500ms, 119->1.5s */
+ mpi_set_open_retry_interval_reg(pm8001_ha, 119);
/* notify firmware update finished and check initialization status */
if (0 == mpi_init_check(pm8001_ha)) {
PM8001_INIT_DBG(pm8001_ha,
@@ -1421,24 +1422,191 @@ static void pm8001_work_fn(struct work_struct *work)
struct pm8001_device *pm8001_dev;
struct domain_device *dev;
+ /*
+ * So far, all users of this stash an associated structure here.
+ * If we get here, and this pointer is null, then the action
+ * was cancelled. This nullification happens when the device
+ * goes away.
+ */
+ pm8001_dev = pw->data; /* Most stash device structure */
+ if ((pm8001_dev == NULL)
+ || ((pw->handler != IO_XFER_ERROR_BREAK)
+ && (pm8001_dev->dev_type == NO_DEVICE))) {
+ kfree(pw);
+ return;
+ }
+
switch (pw->handler) {
+ case IO_XFER_ERROR_BREAK:
+ { /* This one stashes the sas_task instead */
+ struct sas_task *t = (struct sas_task *)pm8001_dev;
+ u32 tag;
+ struct pm8001_ccb_info *ccb;
+ struct pm8001_hba_info *pm8001_ha = pw->pm8001_ha;
+ unsigned long flags, flags1;
+ struct task_status_struct *ts;
+ int i;
+
+ if (pm8001_query_task(t) == TMF_RESP_FUNC_SUCC)
+ break; /* Task still on lu */
+ spin_lock_irqsave(&pm8001_ha->lock, flags);
+
+ spin_lock_irqsave(&t->task_state_lock, flags1);
+ if (unlikely((t->task_state_flags & SAS_TASK_STATE_DONE))) {
+ spin_unlock_irqrestore(&t->task_state_lock, flags1);
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+ break; /* Task got completed by another */
+ }
+ spin_unlock_irqrestore(&t->task_state_lock, flags1);
+
+ /* Search for a possible ccb that matches the task */
+ for (i = 0; ccb = NULL, i < PM8001_MAX_CCB; i++) {
+ ccb = &pm8001_ha->ccb_info[i];
+ tag = ccb->ccb_tag;
+ if ((tag != 0xFFFFFFFF) && (ccb->task == t))
+ break;
+ }
+ if (!ccb) {
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+ break; /* Task got freed by another */
+ }
+ ts = &t->task_status;
+ ts->resp = SAS_TASK_COMPLETE;
+ /* Force the midlayer to retry */
+ ts->stat = SAS_QUEUE_FULL;
+ pm8001_dev = ccb->device;
+ if (pm8001_dev)
+ pm8001_dev->running_req--;
+ spin_lock_irqsave(&t->task_state_lock, flags1);
+ t->task_state_flags &= ~SAS_TASK_STATE_PENDING;
+ t->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
+ t->task_state_flags |= SAS_TASK_STATE_DONE;
+ if (unlikely((t->task_state_flags & SAS_TASK_STATE_ABORTED))) {
+ spin_unlock_irqrestore(&t->task_state_lock, flags1);
+ PM8001_FAIL_DBG(pm8001_ha, pm8001_printk("task 0x%p"
+ " done with event 0x%x resp 0x%x stat 0x%x but"
+ " aborted by upper layer!\n",
+ t, pw->handler, ts->resp, ts->stat));
+ pm8001_ccb_task_free(pm8001_ha, t, ccb, tag);
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+ } else {
+ spin_unlock_irqrestore(&t->task_state_lock, flags1);
+ pm8001_ccb_task_free(pm8001_ha, t, ccb, tag);
+ mb();/* in order to force CPU ordering */
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+ t->task_done(t);
+ }
+ } break;
+ case IO_XFER_OPEN_RETRY_TIMEOUT:
+ { /* This one stashes the sas_task instead */
+ struct sas_task *t = (struct sas_task *)pm8001_dev;
+ u32 tag;
+ struct pm8001_ccb_info *ccb;
+ struct pm8001_hba_info *pm8001_ha = pw->pm8001_ha;
+ unsigned long flags, flags1;
+ int i, ret = 0;
+
+ PM8001_IO_DBG(pm8001_ha,
+ pm8001_printk("IO_XFER_OPEN_RETRY_TIMEOUT\n"));
+
+ ret = pm8001_query_task(t);
+
+ PM8001_IO_DBG(pm8001_ha,
+ switch (ret) {
+ case TMF_RESP_FUNC_SUCC:
+ pm8001_printk("...Task on lu\n");
+ break;
+
+ case TMF_RESP_FUNC_COMPLETE:
+ pm8001_printk("...Task NOT on lu\n");
+ break;
+
+ default:
+ pm8001_printk("...query task failed!!!\n");
+ break;
+ });
+
+ spin_lock_irqsave(&pm8001_ha->lock, flags);
+
+ spin_lock_irqsave(&t->task_state_lock, flags1);
+
+ if (unlikely((t->task_state_flags & SAS_TASK_STATE_DONE))) {
+ spin_unlock_irqrestore(&t->task_state_lock, flags1);
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+ if (ret == TMF_RESP_FUNC_SUCC) /* task on lu */
+ (void)pm8001_abort_task(t);
+ break; /* Task got completed by another */
+ }
+
+ spin_unlock_irqrestore(&t->task_state_lock, flags1);
+
+ /* Search for a possible ccb that matches the task */
+ for (i = 0; ccb = NULL, i < PM8001_MAX_CCB; i++) {
+ ccb = &pm8001_ha->ccb_info[i];
+ tag = ccb->ccb_tag;
+ if ((tag != 0xFFFFFFFF) && (ccb->task == t))
+ break;
+ }
+ if (!ccb) {
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+ if (ret == TMF_RESP_FUNC_SUCC) /* task on lu */
+ (void)pm8001_abort_task(t);
+ break; /* Task got freed by another */
+ }
+
+ pm8001_dev = ccb->device;
+ dev = pm8001_dev->sas_device;
+
+ switch (ret) {
+ case TMF_RESP_FUNC_SUCC: /* task on lu */
+ ccb->open_retry = 1; /* Snub completion */
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+ ret = pm8001_abort_task(t);
+ ccb->open_retry = 0;
+ switch (ret) {
+ case TMF_RESP_FUNC_SUCC:
+ case TMF_RESP_FUNC_COMPLETE:
+ break;
+ default: /* device misbehavior */
+ ret = TMF_RESP_FUNC_FAILED;
+ PM8001_IO_DBG(pm8001_ha,
+ pm8001_printk("...Reset phy\n"));
+ pm8001_I_T_nexus_reset(dev);
+ break;
+ }
+ break;
+
+ case TMF_RESP_FUNC_COMPLETE: /* task not on lu */
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+ /* Do we need to abort the task locally? */
+ break;
+
+ default: /* device misbehavior */
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+ ret = TMF_RESP_FUNC_FAILED;
+ PM8001_IO_DBG(pm8001_ha,
+ pm8001_printk("...Reset phy\n"));
+ pm8001_I_T_nexus_reset(dev);
+ }
+
+ if (ret == TMF_RESP_FUNC_FAILED)
+ t = NULL;
+ pm8001_open_reject_retry(pm8001_ha, t, pm8001_dev);
+ PM8001_IO_DBG(pm8001_ha, pm8001_printk("...Complete\n"));
+ } break;
case IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS:
- pm8001_dev = pw->data;
dev = pm8001_dev->sas_device;
pm8001_I_T_nexus_reset(dev);
break;
case IO_OPEN_CNX_ERROR_STP_RESOURCES_BUSY:
- pm8001_dev = pw->data;
dev = pm8001_dev->sas_device;
pm8001_I_T_nexus_reset(dev);
break;
case IO_DS_IN_ERROR:
- pm8001_dev = pw->data;
dev = pm8001_dev->sas_device;
pm8001_I_T_nexus_reset(dev);
break;
case IO_DS_NON_OPERATIONAL:
- pm8001_dev = pw->data;
dev = pm8001_dev->sas_device;
pm8001_I_T_nexus_reset(dev);
break;
@@ -1493,6 +1661,11 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
status = le32_to_cpu(psspPayload->status);
tag = le32_to_cpu(psspPayload->tag);
ccb = &pm8001_ha->ccb_info[tag];
+ if ((status == IO_ABORTED) && ccb->open_retry) {
+ /* Being completed by another */
+ ccb->open_retry = 0;
+ return;
+ }
pm8001_dev = ccb->device;
param = le32_to_cpu(psspPayload->param);
@@ -1548,6 +1721,8 @@ mpi_ssp_completion(struct pm8001_hba_info *pm8001_ha , void *piomb)
pm8001_printk("IO_XFER_ERROR_BREAK\n"));
ts->resp = SAS_TASK_COMPLETE;
ts->stat = SAS_OPEN_REJECT;
+ /* Force the midlayer to retry */
+ ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
break;
case IO_XFER_ERROR_PHY_NOT_READY:
PM8001_IO_DBG(pm8001_ha,
@@ -1752,9 +1927,8 @@ static void mpi_ssp_event(struct pm8001_hba_info *pm8001_ha , void *piomb)
case IO_XFER_ERROR_BREAK:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_BREAK\n"));
- ts->resp = SAS_TASK_COMPLETE;
- ts->stat = SAS_INTERRUPTED;
- break;
+ pm8001_handle_event(pm8001_ha, t, IO_XFER_ERROR_BREAK);
+ return;
case IO_XFER_ERROR_PHY_NOT_READY:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_PHY_NOT_READY\n"));
@@ -1833,10 +2007,8 @@ static void mpi_ssp_event(struct pm8001_hba_info *pm8001_ha , void *piomb)
case IO_XFER_OPEN_RETRY_TIMEOUT:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_OPEN_RETRY_TIMEOUT\n"));
- ts->resp = SAS_TASK_COMPLETE;
- ts->stat = SAS_OPEN_REJECT;
- ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
- break;
+ pm8001_handle_event(pm8001_ha, t, IO_XFER_OPEN_RETRY_TIMEOUT);
+ return;
case IO_XFER_ERROR_UNEXPECTED_PHASE:
PM8001_IO_DBG(pm8001_ha,
pm8001_printk("IO_XFER_ERROR_UNEXPECTED_PHASE\n"));
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index ab0704e39040..9589fc941a8b 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -538,6 +538,7 @@ void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
task->lldd_task = NULL;
ccb->task = NULL;
ccb->ccb_tag = 0xFFFFFFFF;
+ ccb->open_retry = 0;
pm8001_ccb_free(pm8001_ha, ccb_idx);
}
@@ -882,6 +883,77 @@ static int pm8001_issue_ssp_tmf(struct domain_device *dev,
tmf);
}
+/* retry commands by ha, by task and/or by device */
+void pm8001_open_reject_retry(
+ struct pm8001_hba_info *pm8001_ha,
+ struct sas_task *task_to_close,
+ struct pm8001_device *device_to_close)
+{
+ int i;
+ unsigned long flags;
+
+ if (pm8001_ha == NULL)
+ return;
+
+ spin_lock_irqsave(&pm8001_ha->lock, flags);
+
+ for (i = 0; i < PM8001_MAX_CCB; i++) {
+ struct sas_task *task;
+ struct task_status_struct *ts;
+ struct pm8001_device *pm8001_dev;
+ unsigned long flags1;
+ u32 tag;
+ struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[i];
+
+ pm8001_dev = ccb->device;
+ if (!pm8001_dev || (pm8001_dev->dev_type == NO_DEVICE))
+ continue;
+ if (!device_to_close) {
+ uintptr_t d = (uintptr_t)pm8001_dev
+ - (uintptr_t)&pm8001_ha->devices;
+ if (((d % sizeof(*pm8001_dev)) != 0)
+ || ((d / sizeof(*pm8001_dev)) >= PM8001_MAX_DEVICES))
+ continue;
+ } else if (pm8001_dev != device_to_close)
+ continue;
+ tag = ccb->ccb_tag;
+ if (!tag || (tag == 0xFFFFFFFF))
+ continue;
+ task = ccb->task;
+ if (!task || !task->task_done)
+ continue;
+ if (task_to_close && (task != task_to_close))
+ continue;
+ ts = &task->task_status;
+ ts->resp = SAS_TASK_COMPLETE;
+ /* Force the midlayer to retry */
+ ts->stat = SAS_OPEN_REJECT;
+ ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
+ if (pm8001_dev)
+ pm8001_dev->running_req--;
+ spin_lock_irqsave(&task->task_state_lock, flags1);
+ task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
+ task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
+ task->task_state_flags |= SAS_TASK_STATE_DONE;
+ if (unlikely((task->task_state_flags
+ & SAS_TASK_STATE_ABORTED))) {
+ spin_unlock_irqrestore(&task->task_state_lock,
+ flags1);
+ pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
+ } else {
+ spin_unlock_irqrestore(&task->task_state_lock,
+ flags1);
+ pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
+ mb();/* in order to force CPU ordering */
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+ task->task_done(task);
+ spin_lock_irqsave(&pm8001_ha->lock, flags);
+ }
+ }
+
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+}
+
/**
* Standard mandates link reset for ATA (type 0) and hard reset for
* SSP (type 1) , only for RECOVERY
diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h
index 83a48f3247b8..11008205aeb3 100644
--- a/drivers/scsi/pm8001/pm8001_sas.h
+++ b/drivers/scsi/pm8001/pm8001_sas.h
@@ -235,6 +235,7 @@ struct pm8001_ccb_info {
struct pm8001_device *device;
struct pm8001_prd buf_prd[PM8001_MAX_DMA_SG];
struct fw_control_ex *fw_control_context;
+ u8 open_retry;
};
struct mpi_mem {
@@ -484,6 +485,10 @@ void pm8001_dev_gone(struct domain_device *dev);
int pm8001_lu_reset(struct domain_device *dev, u8 *lun);
int pm8001_I_T_nexus_reset(struct domain_device *dev);
int pm8001_query_task(struct sas_task *task);
+void pm8001_open_reject_retry(
+ struct pm8001_hba_info *pm8001_ha,
+ struct sas_task *task_to_close,
+ struct pm8001_device *device_to_close);
int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr,
dma_addr_t *pphys_addr, u32 *pphys_addr_hi, u32 *pphys_addr_lo,
u32 mem_size, u32 align);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.