From: Kevin Barnett <kevin.barnett@xxxxxxxxxxxxx>
Restructure the hibernate/suspend code to allow work-arounds for the
controller boot differences.
Newer controllers have subtle differences in the way that they bootup.
Reviewed-by: Mike McGowen <mike.mcgowen@xxxxxxxxxxxxx>
Reviewed-by: Scott Benesh <scott.benesh@xxxxxxxxxxxxx>
Reviewed-by: Scott Teel <scott.teel@xxxxxxxxxxxxx>
Signed-off-by: Kevin Barnett <kevin.barnett@xxxxxxxxxxxxx>
Signed-off-by: Don Brace <don.brace@xxxxxxxxxxxxx>
---
drivers/scsi/smartpqi/smartpqi_init.c | 116 +++++++++++++++++++++++----------
1 file changed, 81 insertions(+), 35 deletions(-)
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index 29cef682bde9..3c3749fcb78c 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -8955,15 +8955,16 @@ static inline enum bmic_flush_cache_shutdown_event pqi_get_flush_cache_shutdown_
{
if (pci_dev->subsystem_vendor == PCI_VENDOR_ID_ADAPTEC2 && pci_dev->subsystem_device == 0x1304)
return RESTART;
+
return SUSPEND;
}
-static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state)
+static int pqi_suspend_or_freeze(struct device *dev, bool suspend)
{
+ struct pci_dev *pci_dev;
struct pqi_ctrl_info *ctrl_info;
- enum bmic_flush_cache_shutdown_event shutdown_event;
- shutdown_event = pqi_get_flush_cache_shutdown_event(pci_dev);
+ pci_dev = to_pci_dev(dev);
ctrl_info = pci_get_drvdata(pci_dev);
pqi_wait_until_ofa_finished(ctrl_info);
@@ -8973,16 +8974,17 @@ static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t stat
pqi_ctrl_block_device_reset(ctrl_info);
pqi_ctrl_block_requests(ctrl_info);
pqi_ctrl_wait_until_quiesced(ctrl_info);
- pqi_flush_cache(ctrl_info, shutdown_event);
- pqi_stop_heartbeat_timer(ctrl_info);
- pqi_crash_if_pending_command(ctrl_info);
+ if (suspend) {
+ enum bmic_flush_cache_shutdown_event shutdown_event;
- if (state.event == PM_EVENT_FREEZE)
- return 0;
+ shutdown_event = pqi_get_flush_cache_shutdown_event(pci_dev);
+ pqi_flush_cache(ctrl_info, shutdown_event);
+ }
- pci_save_state(pci_dev);
- pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
+ pqi_stop_heartbeat_timer(ctrl_info);
+ pqi_crash_if_pending_command(ctrl_info);
+ pqi_free_irqs(ctrl_info);
ctrl_info->controller_online = false;
ctrl_info->pqi_mode_enabled = false;
@@ -8990,44 +8992,87 @@ static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t stat
return 0;
}
-static __maybe_unused int pqi_resume(struct pci_dev *pci_dev)
+static __maybe_unused int pqi_suspend(struct device *dev)
+{
+ return pqi_suspend_or_freeze(dev, true);
+}
+
+static int pqi_resume_or_restore(struct device *dev)
{
int rc;
+ struct pci_dev *pci_dev;
struct pqi_ctrl_info *ctrl_info;
+ pci_dev = to_pci_dev(dev);
ctrl_info = pci_get_drvdata(pci_dev);
- if (pci_dev->current_state != PCI_D0) {
- ctrl_info->max_hw_queue_index = 0;
- pqi_free_interrupts(ctrl_info);
- pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX);
- rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler,
- IRQF_SHARED, DRIVER_NAME_SHORT,
- &ctrl_info->queue_groups[0]);
- if (rc) {
- dev_err(&ctrl_info->pci_dev->dev,
- "irq %u init failed with error %d\n",
- pci_dev->irq, rc);
- return rc;
- }
- pqi_ctrl_unblock_device_reset(ctrl_info);
- pqi_ctrl_unblock_requests(ctrl_info);
- pqi_scsi_unblock_requests(ctrl_info);
- pqi_ctrl_unblock_scan(ctrl_info);
- return 0;
- }
-
- pci_set_power_state(pci_dev, PCI_D0);
- pci_restore_state(pci_dev);
+ rc = pqi_request_irqs(ctrl_info);
+ if (rc)
+ return rc;
pqi_ctrl_unblock_device_reset(ctrl_info);
pqi_ctrl_unblock_requests(ctrl_info);
pqi_scsi_unblock_requests(ctrl_info);
pqi_ctrl_unblock_scan(ctrl_info);
+ ssleep(PQI_POST_RESET_DELAY_SECS);
+
return pqi_ctrl_init_resume(ctrl_info);
}
+static int pqi_freeze(struct device *dev)
+{
+ return pqi_suspend_or_freeze(dev, false);
+}
+
+static int pqi_thaw(struct device *dev)
+{
+ int rc;
+ struct pci_dev *pci_dev;
+ struct pqi_ctrl_info *ctrl_info;
+
+ pci_dev = to_pci_dev(dev);
+ ctrl_info = pci_get_drvdata(pci_dev);
+
+ rc = pqi_request_irqs(ctrl_info);
+ if (rc)
+ return rc;
+
+ ctrl_info->controller_online = true;
+ ctrl_info->pqi_mode_enabled = true;
+
+ pqi_ctrl_unblock_device_reset(ctrl_info);
+ pqi_ctrl_unblock_requests(ctrl_info);
+ pqi_scsi_unblock_requests(ctrl_info);
+ pqi_ctrl_unblock_scan(ctrl_info);
+
+ return 0;
+}
+
+static int pqi_poweroff(struct device *dev)
+{
+ struct pci_dev *pci_dev;
+ struct pqi_ctrl_info *ctrl_info;
+ enum bmic_flush_cache_shutdown_event shutdown_event;
+
+ pci_dev = to_pci_dev(dev);
+ ctrl_info = pci_get_drvdata(pci_dev);
+
+ shutdown_event = pqi_get_flush_cache_shutdown_event(pci_dev);
+ pqi_flush_cache(ctrl_info, shutdown_event);
+
+ return 0;
+}
+
+static const struct dev_pm_ops pqi_pm_ops = {
+ .suspend = pqi_suspend,
+ .resume = pqi_resume_or_restore,
+ .freeze = pqi_freeze,
+ .thaw = pqi_thaw,
+ .poweroff = pqi_poweroff,
+ .restore = pqi_resume_or_restore,
+};
+
/* Define the PCI IDs for the controllers that we support. */
static const struct pci_device_id pqi_pci_id_table[] = {
{
@@ -9694,8 +9739,9 @@ static struct pci_driver pqi_pci_driver = {
.remove = pqi_pci_remove,
.shutdown = pqi_shutdown,
#if defined(CONFIG_PM)
- .suspend = pqi_suspend,
- .resume = pqi_resume,
+ .driver = {
+ .pm = &pqi_pm_ops
+ },
#endif
};
