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authorJames Bottomley <JBottomley@Parallels.com>2012-10-02 08:55:12 +0100
committerJames Bottomley <JBottomley@Parallels.com>2012-10-02 08:55:12 +0100
commitfe709ed827d370e6b0c0a9f9456da1c22bdcd118 (patch)
treec5a7fd72a745a5f6656a58acc9a1d277e26f9595 /drivers/scsi/isci
parent1c4cf1d5845b59cdcbfad8e67272cf5b219ab062 (diff)
parent0644f5393e915f13733bcc65f13195ff39aeb63e (diff)
downloadlinux-linaro-stable-fe709ed827d370e6b0c0a9f9456da1c22bdcd118.tar.gz
Merge SCSI misc branch into isci-for-3.6 tag
Diffstat (limited to 'drivers/scsi/isci')
-rw-r--r--drivers/scsi/isci/host.c22
-rw-r--r--drivers/scsi/isci/host.h2
-rw-r--r--drivers/scsi/isci/init.c58
3 files changed, 73 insertions, 9 deletions
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c
index b425ed523ccc..b0afa4486158 100644
--- a/drivers/scsi/isci/host.c
+++ b/drivers/scsi/isci/host.c
@@ -1044,7 +1044,7 @@ static enum sci_status sci_controller_start(struct isci_host *ihost,
return SCI_SUCCESS;
}
-void isci_host_scan_start(struct Scsi_Host *shost)
+void isci_host_start(struct Scsi_Host *shost)
{
struct isci_host *ihost = SHOST_TO_SAS_HA(shost)->lldd_ha;
unsigned long tmo = sci_controller_get_suggested_start_timeout(ihost);
@@ -1079,7 +1079,6 @@ static void sci_controller_completion_handler(struct isci_host *ihost)
void ireq_done(struct isci_host *ihost, struct isci_request *ireq, struct sas_task *task)
{
- task->lldd_task = NULL;
if (!test_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags) &&
!(task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
if (test_bit(IREQ_COMPLETE_IN_TARGET, &ireq->flags)) {
@@ -1087,16 +1086,19 @@ void ireq_done(struct isci_host *ihost, struct isci_request *ireq, struct sas_ta
dev_dbg(&ihost->pdev->dev,
"%s: Normal - ireq/task = %p/%p\n",
__func__, ireq, task);
-
+ task->lldd_task = NULL;
task->task_done(task);
} else {
dev_dbg(&ihost->pdev->dev,
"%s: Error - ireq/task = %p/%p\n",
__func__, ireq, task);
-
+ if (sas_protocol_ata(task->task_proto))
+ task->lldd_task = NULL;
sas_task_abort(task);
}
- }
+ } else
+ task->lldd_task = NULL;
+
if (test_and_clear_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags))
wake_up_all(&ihost->eventq);
@@ -1120,10 +1122,16 @@ void isci_host_completion_routine(unsigned long data)
sci_controller_completion_handler(ihost);
spin_unlock_irq(&ihost->scic_lock);
- /* the coalesence timeout doubles at each encoding step, so
+ /*
+ * we subtract SCI_MAX_PORTS to account for the number of dummy TCs
+ * issued for hardware issue workaround
+ */
+ active = isci_tci_active(ihost) - SCI_MAX_PORTS;
+
+ /*
+ * the coalesence timeout doubles at each encoding step, so
* update it based on the ilog2 value of the outstanding requests
*/
- active = isci_tci_active(ihost);
writel(SMU_ICC_GEN_VAL(NUMBER, active) |
SMU_ICC_GEN_VAL(TIMER, ISCI_COALESCE_BASE + ilog2(active)),
&ihost->smu_registers->interrupt_coalesce_control);
diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h
index 9ab58e0540e7..4911310a38f5 100644
--- a/drivers/scsi/isci/host.h
+++ b/drivers/scsi/isci/host.h
@@ -473,7 +473,7 @@ void sci_controller_remote_device_stopped(struct isci_host *ihost,
enum sci_status sci_controller_continue_io(struct isci_request *ireq);
int isci_host_scan_finished(struct Scsi_Host *, unsigned long);
-void isci_host_scan_start(struct Scsi_Host *);
+void isci_host_start(struct Scsi_Host *);
u16 isci_alloc_tag(struct isci_host *ihost);
enum sci_status isci_free_tag(struct isci_host *ihost, u16 io_tag);
void isci_tci_free(struct isci_host *ihost, u16 tci);
diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
index 1286a8a787e2..5ed4e608f200 100644
--- a/drivers/scsi/isci/init.c
+++ b/drivers/scsi/isci/init.c
@@ -156,7 +156,7 @@ static struct scsi_host_template isci_sht = {
.target_alloc = sas_target_alloc,
.slave_configure = sas_slave_configure,
.scan_finished = isci_host_scan_finished,
- .scan_start = isci_host_scan_start,
+ .scan_start = isci_host_start,
.change_queue_depth = sas_change_queue_depth,
.change_queue_type = sas_change_queue_type,
.bios_param = sas_bios_param,
@@ -721,11 +721,67 @@ static void __devexit isci_pci_remove(struct pci_dev *pdev)
}
}
+#ifdef CONFIG_PM
+static int isci_suspend(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct isci_host *ihost;
+ int i;
+
+ for_each_isci_host(i, ihost, pdev) {
+ sas_suspend_ha(&ihost->sas_ha);
+ isci_host_deinit(ihost);
+ }
+
+ pci_save_state(pdev);
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, PCI_D3hot);
+
+ return 0;
+}
+
+static int isci_resume(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct isci_host *ihost;
+ int rc, i;
+
+ pci_set_power_state(pdev, PCI_D0);
+ pci_restore_state(pdev);
+
+ rc = pcim_enable_device(pdev);
+ if (rc) {
+ dev_err(&pdev->dev,
+ "enabling device failure after resume(%d)\n", rc);
+ return rc;
+ }
+
+ pci_set_master(pdev);
+
+ for_each_isci_host(i, ihost, pdev) {
+ sas_prep_resume_ha(&ihost->sas_ha);
+
+ isci_host_init(ihost);
+ isci_host_start(ihost->sas_ha.core.shost);
+ wait_for_start(ihost);
+
+ sas_resume_ha(&ihost->sas_ha);
+ }
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(isci_pm_ops, isci_suspend, isci_resume);
+#endif
+
static struct pci_driver isci_pci_driver = {
.name = DRV_NAME,
.id_table = isci_id_table,
.probe = isci_pci_probe,
.remove = __devexit_p(isci_pci_remove),
+#ifdef CONFIG_PM
+ .driver.pm = &isci_pm_ops,
+#endif
};
static __init int isci_init(void)