diff options
Diffstat (limited to 'drivers/scsi/aacraid/linit.c')
| -rw-r--r-- | drivers/scsi/aacraid/linit.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index 9eec02733c86..3b6e5c67e853 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -1317,6 +1317,154 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) return error; } +#if (defined(CONFIG_PM)) +void aac_release_resources(struct aac_dev *aac) +{ + int i; + + aac_adapter_disable_int(aac); + if (aac->pdev->device == PMC_DEVICE_S6 || + aac->pdev->device == PMC_DEVICE_S7 || + aac->pdev->device == PMC_DEVICE_S8 || + aac->pdev->device == PMC_DEVICE_S9) { + if (aac->max_msix > 1) { + for (i = 0; i < aac->max_msix; i++) + free_irq(aac->msixentry[i].vector, + &(aac->aac_msix[i])); + } else { + free_irq(aac->pdev->irq, &(aac->aac_msix[0])); + } + } else { + free_irq(aac->pdev->irq, aac); + } + if (aac->msi) + pci_disable_msi(aac->pdev); + else if (aac->max_msix > 1) + pci_disable_msix(aac->pdev); + +} + +static int aac_acquire_resources(struct aac_dev *dev) +{ + int i, j; + int instance = dev->id; + const char *name = dev->name; + unsigned long status; + /* + * First clear out all interrupts. Then enable the one's that we + * can handle. + */ + while (!((status = src_readl(dev, MUnit.OMR)) & KERNEL_UP_AND_RUNNING) + || status == 0xffffffff) + msleep(20); + + aac_adapter_disable_int(dev); + aac_adapter_enable_int(dev); + + + if ((dev->pdev->device == PMC_DEVICE_S7 || + dev->pdev->device == PMC_DEVICE_S8 || + dev->pdev->device == PMC_DEVICE_S9)) + aac_define_int_mode(dev); + + if (dev->msi_enabled) + aac_src_access_devreg(dev, AAC_ENABLE_MSIX); + + if (!dev->sync_mode && dev->msi_enabled && dev->max_msix > 1) { + for (i = 0; i < dev->max_msix; i++) { + dev->aac_msix[i].vector_no = i; + dev->aac_msix[i].dev = dev; + + if (request_irq(dev->msixentry[i].vector, + dev->a_ops.adapter_intr, + 0, "aacraid", &(dev->aac_msix[i]))) { + printk(KERN_ERR "%s%d: Failed to register IRQ for vector %d.\n", + name, instance, i); + for (j = 0 ; j < i ; j++) + free_irq(dev->msixentry[j].vector, + &(dev->aac_msix[j])); + pci_disable_msix(dev->pdev); + goto error_iounmap; + } + } + } else { + dev->aac_msix[0].vector_no = 0; + dev->aac_msix[0].dev = dev; + + if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr, + IRQF_SHARED, "aacraid", + &(dev->aac_msix[0])) < 0) { + if (dev->msi) + pci_disable_msi(dev->pdev); + printk(KERN_ERR "%s%d: Interrupt unavailable.\n", + name, instance); + goto error_iounmap; + } + } + + aac_adapter_enable_int(dev); + + if (!dev->sync_mode) + aac_adapter_start(dev); + return 0; + +error_iounmap: + return -1; + +} +static int aac_suspend(struct pci_dev *pdev, pm_message_t state) +{ + + struct Scsi_Host *shost = pci_get_drvdata(pdev); + struct aac_dev *aac = (struct aac_dev *)shost->hostdata; + + scsi_block_requests(shost); + aac_send_shutdown(aac); + + aac_release_resources(aac); + + pci_set_drvdata(pdev, shost); + pci_save_state(pdev); + pci_disable_device(pdev); + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + + return 0; +} + +static int aac_resume(struct pci_dev *pdev) +{ + struct Scsi_Host *shost = pci_get_drvdata(pdev); + struct aac_dev *aac = (struct aac_dev *)shost->hostdata; + int r; + + pci_set_power_state(pdev, PCI_D0); + pci_enable_wake(pdev, PCI_D0, 0); + pci_restore_state(pdev); + r = pci_enable_device(pdev); + + if (r) + goto fail_device; + + pci_set_master(pdev); + if (aac_acquire_resources(aac)) + goto fail_device; + /* + * reset this flag to unblock ioctl() as it was set at + * aac_send_shutdown() to block ioctls from upperlayer + */ + aac->adapter_shutdown = 0; + scsi_unblock_requests(shost); + + return 0; + +fail_device: + printk(KERN_INFO "%s%d: resume failed.\n", aac->name, aac->id); + scsi_host_put(shost); + pci_disable_device(pdev); + return -ENODEV; +} +#endif + static void aac_shutdown(struct pci_dev *dev) { struct Scsi_Host *shost = pci_get_drvdata(dev); @@ -1356,6 +1504,10 @@ static struct pci_driver aac_pci_driver = { .id_table = aac_pci_tbl, .probe = aac_probe_one, .remove = aac_remove_one, +#if (defined(CONFIG_PM)) + .suspend = aac_suspend, + .resume = aac_resume, +#endif .shutdown = aac_shutdown, }; |