diff options
author | Kevin Barnett <kevin.barnett@microchip.com> | 2022-02-01 22:49:08 +0100 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-02-08 05:38:36 +0100 |
commit | c66e078ad89e9f171a2474b255284d95c54c4c36 (patch) | |
tree | ee465deb320105395f6f8e5ab4fcee46bea58d4b /drivers/scsi/smartpqi | |
parent | scsi: smartpqi: Fix BUILD_BUG_ON() statements (diff) | |
download | linux-c66e078ad89e9f171a2474b255284d95c54c4c36.tar.xz linux-c66e078ad89e9f171a2474b255284d95c54c4c36.zip |
scsi: smartpqi: Fix hibernate and suspend
Restructure the hibernate/suspend code to allow workarounds for the
controller boot differences.
Newer controllers have subtle differences in the way that they boot up.
Link: https://lore.kernel.org/r/164375214859.440833.14683009064111314948.stgit@brunhilda.pdev.net
Reviewed-by: Mike McGowen <mike.mcgowen@microchip.com>
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/smartpqi')
-rw-r--r-- | drivers/scsi/smartpqi/smartpqi_init.c | 116 |
1 files 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 }; |