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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-01-20 14:01:31 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-01-20 14:01:31 -0300
commitb4b7ff4b08e691656c9d77c758fc355833128ac0 (patch)
tree82fcb00e6b918026dc9f2d1f05ed8eee83874cc0 /drivers/scsi/aacraid/linit.c
parent35acfa0fc609f2a2cd95cef4a6a9c3a5c38f1778 (diff)
Linux-libre 4.4-gnupck-4.4-gnu
Diffstat (limited to 'drivers/scsi/aacraid/linit.c')
-rw-r--r--drivers/scsi/aacraid/linit.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 9eec02733..3b6e5c67e 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,
};