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path: root/drivers/scsi/pm8001/pm8001_sas.c
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Diffstat (limited to 'drivers/scsi/pm8001/pm8001_sas.c')
-rw-r--r--drivers/scsi/pm8001/pm8001_sas.c127
1 files changed, 112 insertions, 15 deletions
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index fb3dc997886..3b11edd4a50 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -166,6 +166,7 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
struct pm8001_hba_info *pm8001_ha = NULL;
struct sas_phy_linkrates *rates;
DECLARE_COMPLETION_ONSTACK(completion);
+ unsigned long flags;
pm8001_ha = sas_phy->ha->lldd_ha;
pm8001_ha->phy[phy_id].enable_completion = &completion;
switch (func) {
@@ -209,8 +210,29 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
case PHY_FUNC_DISABLE:
PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
break;
+ case PHY_FUNC_GET_EVENTS:
+ spin_lock_irqsave(&pm8001_ha->lock, flags);
+ if (-1 == pm8001_bar4_shift(pm8001_ha,
+ (phy_id < 4) ? 0x30000 : 0x40000)) {
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+ return -EINVAL;
+ }
+ {
+ struct sas_phy *phy = sas_phy->phy;
+ uint32_t *qp = (uint32_t *)(((char *)
+ pm8001_ha->io_mem[2].memvirtaddr)
+ + 0x1034 + (0x4000 * (phy_id & 3)));
+
+ phy->invalid_dword_count = qp[0];
+ phy->running_disparity_error_count = qp[1];
+ phy->loss_of_dword_sync_count = qp[3];
+ phy->phy_reset_problem_count = qp[4];
+ }
+ pm8001_bar4_shift(pm8001_ha, 0);
+ spin_unlock_irqrestore(&pm8001_ha->lock, flags);
+ return 0;
default:
- rc = -ENOSYS;
+ rc = -EOPNOTSUPP;
}
msleep(300);
return rc;
@@ -234,12 +256,14 @@ void pm8001_scan_start(struct Scsi_Host *shost)
int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
{
+ struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
+
/* give the phy enabling interrupt event time to come in (1s
* is empirically about all it takes) */
if (time < HZ)
return 0;
/* Wait for discovery to finish */
- scsi_flush_work(shost);
+ sas_drain_work(ha);
return 1;
}
@@ -340,7 +364,7 @@ static int pm8001_task_exec(struct sas_task *task, const int num,
struct pm8001_ccb_info *ccb;
u32 tag = 0xdeadbeef, rc, n_elem = 0;
u32 n = num;
- unsigned long flags = 0, flags_libsas = 0;
+ unsigned long flags = 0;
if (!dev->port) {
struct task_status_struct *tsm = &t->task_status;
@@ -364,11 +388,7 @@ static int pm8001_task_exec(struct sas_task *task, const int num,
ts->stat = SAS_PHY_DOWN;
spin_unlock_irqrestore(&pm8001_ha->lock, flags);
- spin_unlock_irqrestore(dev->sata_dev.ap->lock,
- flags_libsas);
t->task_done(t);
- spin_lock_irqsave(dev->sata_dev.ap->lock,
- flags_libsas);
spin_lock_irqsave(&pm8001_ha->lock, flags);
if (n > 1)
t = list_entry(t->list.next,
@@ -516,6 +536,7 @@ 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);
}
@@ -615,7 +636,7 @@ static int pm8001_dev_found_notify(struct domain_device *dev)
wait_for_completion(&completion);
if (dev->dev_type == SAS_END_DEV)
msleep(50);
- pm8001_ha->flags |= PM8001F_RUN_TIME ;
+ pm8001_ha->flags = PM8001F_RUN_TIME;
return 0;
found_out:
spin_unlock_irqrestore(&pm8001_ha->lock, flags);
@@ -860,6 +881,77 @@ 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
@@ -875,12 +967,14 @@ int pm8001_I_T_nexus_reset(struct domain_device *dev)
pm8001_dev = dev->lldd_dev;
pm8001_ha = pm8001_find_ha_by_dev(dev);
- phy = sas_find_local_phy(dev);
+ phy = sas_get_local_phy(dev);
if (dev_is_sata(dev)) {
DECLARE_COMPLETION_ONSTACK(completion_setstate);
- if (scsi_is_sas_phy_local(phy))
- return 0;
+ if (scsi_is_sas_phy_local(phy)) {
+ rc = 0;
+ goto out;
+ }
rc = sas_phy_reset(phy, 1);
msleep(2000);
rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
@@ -889,12 +983,14 @@ int pm8001_I_T_nexus_reset(struct domain_device *dev)
rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
pm8001_dev, 0x01);
wait_for_completion(&completion_setstate);
- } else{
- rc = sas_phy_reset(phy, 1);
- msleep(2000);
+ } else {
+ rc = sas_phy_reset(phy, 1);
+ msleep(2000);
}
PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
pm8001_dev->device_id, rc));
+ out:
+ sas_put_local_phy(phy);
return rc;
}
@@ -906,10 +1002,11 @@ int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
struct pm8001_device *pm8001_dev = dev->lldd_dev;
struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
if (dev_is_sata(dev)) {
- struct sas_phy *phy = sas_find_local_phy(dev);
+ struct sas_phy *phy = sas_get_local_phy(dev);
rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
dev, 1, 0);
rc = sas_phy_reset(phy, 1);
+ sas_put_local_phy(phy);
rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
pm8001_dev, 0x01);
msleep(2000);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-26 13:32:26 +0000