| Message ID | 20210419110156.1786882-22-kashyap.desai@broadcom.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Introducing mpi3mr driver | expand |
> On Apr 19, 2021, at 6:01 AM, Kashyap Desai <kashyap.desai@broadcom.com> wrote: > > Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> > Reviewed-by: Hannes Reinecke <hare@suse.de> > Reviewed-by: Tomas Henzl <thenzl@redhat.com> > > Cc: sathya.prakash@broadcom.com > --- > drivers/scsi/mpi3mr/mpi3mr_os.c | 85 +++++++++++++++++++++++++++++++++ > 1 file changed, 85 insertions(+) > > diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c > index ccee3e7359ec..05473b0f3c9e 100644 > --- a/drivers/scsi/mpi3mr/mpi3mr_os.c > +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c > @@ -3409,6 +3409,87 @@ static void mpi3mr_shutdown(struct pci_dev *pdev) > > } > > +#ifdef CONFIG_PM > +/** > + * mpi3mr_suspend - PCI power management suspend callback > + * @pdev: PCI device instance > + * @state: New power state > + * > + * Change the power state to the given value and cleanup the IOC > + * by issuing MUR and shutdown notification > + * > + * Return: 0 always. > + */ > +static int mpi3mr_suspend(struct pci_dev *pdev, pm_message_t state) > +{ > + struct Scsi_Host *shost = pci_get_drvdata(pdev); > + struct mpi3mr_ioc *mrioc; > + pci_power_t device_state; > + > + if (!shost) > + return 0; > + > + mrioc = shost_priv(shost); > + while (mrioc->reset_in_progress || mrioc->is_driver_loading) > + ssleep(1); > + mrioc->stop_drv_processing = 1; > + mpi3mr_cleanup_fwevt_list(mrioc); > + scsi_block_requests(shost); > + mpi3mr_stop_watchdog(mrioc); > + mpi3mr_cleanup_ioc(mrioc, 1); > + > + device_state = pci_choose_state(pdev, state); > + ioc_info(mrioc, "pdev=0x%p, slot=%s, entering operating state [D%d]\n", > + pdev, pci_name(pdev), device_state); > + pci_save_state(pdev); > + pci_set_power_state(pdev, device_state); > + mpi3mr_cleanup_resources(mrioc); > + > + return 0; > +} > + > +/** > + * mpi3mr_resume - PCI power management resume callback > + * @pdev: PCI device instance > + * > + * Restore the power state to D0 and reinitialize the controller > + * and resume I/O operations to the target devices > + * > + * Return: 0 on success, non-zero on failure > + */ > +static int mpi3mr_resume(struct pci_dev *pdev) > +{ > + struct Scsi_Host *shost = pci_get_drvdata(pdev); > + struct mpi3mr_ioc *mrioc; > + pci_power_t device_state = pdev->current_state; > + int r; > + > + mrioc = shost_priv(shost); > + > + ioc_info(mrioc, "pdev=0x%p, slot=%s, previous operating state [D%d]\n", > + pdev, pci_name(pdev), device_state); > + pci_set_power_state(pdev, PCI_D0); > + pci_enable_wake(pdev, PCI_D0, 0); > + pci_restore_state(pdev); > + mrioc->pdev = pdev; > + mrioc->cpu_count = num_online_cpus(); > + r = mpi3mr_setup_resources(mrioc); > + if (r) { > + ioc_info(mrioc, "%s: Setup resources failed[%d]\n", > + __func__, r); > + return r; > + } > + > + mrioc->stop_drv_processing = 0; > + mpi3mr_init_ioc(mrioc, 1); > + scsi_unblock_requests(shost); > + mpi3mr_start_watchdog(mrioc); > + > + return 0; > +} > +#endif > + > + > static const struct pci_device_id mpi3mr_pci_id_table[] = { > { > PCI_DEVICE_SUB(PCI_VENDOR_ID_LSI_LOGIC, 0x00A5, > @@ -3424,6 +3505,10 @@ static struct pci_driver mpi3mr_pci_driver = { > .probe = mpi3mr_probe, > .remove = mpi3mr_remove, > .shutdown = mpi3mr_shutdown, > +#ifdef CONFIG_PM > + .suspend = mpi3mr_suspend, > + .resume = mpi3mr_resume, > +#endif > }; > > static int __init mpi3mr_init(void) > -- > 2.18.1 > Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> -- Himanshu Madhani Oracle Linux Engineering
diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index ccee3e7359ec..05473b0f3c9e 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -3409,6 +3409,87 @@ static void mpi3mr_shutdown(struct pci_dev *pdev) } +#ifdef CONFIG_PM +/** + * mpi3mr_suspend - PCI power management suspend callback + * @pdev: PCI device instance + * @state: New power state + * + * Change the power state to the given value and cleanup the IOC + * by issuing MUR and shutdown notification + * + * Return: 0 always. + */ +static int mpi3mr_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct Scsi_Host *shost = pci_get_drvdata(pdev); + struct mpi3mr_ioc *mrioc; + pci_power_t device_state; + + if (!shost) + return 0; + + mrioc = shost_priv(shost); + while (mrioc->reset_in_progress || mrioc->is_driver_loading) + ssleep(1); + mrioc->stop_drv_processing = 1; + mpi3mr_cleanup_fwevt_list(mrioc); + scsi_block_requests(shost); + mpi3mr_stop_watchdog(mrioc); + mpi3mr_cleanup_ioc(mrioc, 1); + + device_state = pci_choose_state(pdev, state); + ioc_info(mrioc, "pdev=0x%p, slot=%s, entering operating state [D%d]\n", + pdev, pci_name(pdev), device_state); + pci_save_state(pdev); + pci_set_power_state(pdev, device_state); + mpi3mr_cleanup_resources(mrioc); + + return 0; +} + +/** + * mpi3mr_resume - PCI power management resume callback + * @pdev: PCI device instance + * + * Restore the power state to D0 and reinitialize the controller + * and resume I/O operations to the target devices + * + * Return: 0 on success, non-zero on failure + */ +static int mpi3mr_resume(struct pci_dev *pdev) +{ + struct Scsi_Host *shost = pci_get_drvdata(pdev); + struct mpi3mr_ioc *mrioc; + pci_power_t device_state = pdev->current_state; + int r; + + mrioc = shost_priv(shost); + + ioc_info(mrioc, "pdev=0x%p, slot=%s, previous operating state [D%d]\n", + pdev, pci_name(pdev), device_state); + pci_set_power_state(pdev, PCI_D0); + pci_enable_wake(pdev, PCI_D0, 0); + pci_restore_state(pdev); + mrioc->pdev = pdev; + mrioc->cpu_count = num_online_cpus(); + r = mpi3mr_setup_resources(mrioc); + if (r) { + ioc_info(mrioc, "%s: Setup resources failed[%d]\n", + __func__, r); + return r; + } + + mrioc->stop_drv_processing = 0; + mpi3mr_init_ioc(mrioc, 1); + scsi_unblock_requests(shost); + mpi3mr_start_watchdog(mrioc); + + return 0; +} +#endif + + static const struct pci_device_id mpi3mr_pci_id_table[] = { { PCI_DEVICE_SUB(PCI_VENDOR_ID_LSI_LOGIC, 0x00A5, @@ -3424,6 +3505,10 @@ static struct pci_driver mpi3mr_pci_driver = { .probe = mpi3mr_probe, .remove = mpi3mr_remove, .shutdown = mpi3mr_shutdown, +#ifdef CONFIG_PM + .suspend = mpi3mr_suspend, + .resume = mpi3mr_resume, +#endif }; static int __init mpi3mr_init(void)