diff options
Diffstat (limited to 'drivers/scsi/megaraid')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.h | 3 | ||||
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 41 |
2 files changed, 37 insertions, 7 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index 224ec31..ff9845c 100644 --- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -1335,6 +1335,9 @@ struct megasas_instance { struct timer_list io_completion_timer; struct list_head internal_reset_pending_q; + + u8 msi_flag; + struct msix_entry msixentry; }; enum { diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index dab29db..2318183 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -72,6 +72,10 @@ module_param_named(max_sectors, max_sectors, int, 0); MODULE_PARM_DESC(max_sectors, "Maximum number of sectors per IO command"); +static int msix_disable; +module_param(msix_disable, int, S_IRUGO); +MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); + MODULE_LICENSE("GPL"); MODULE_VERSION(MEGASAS_VERSION); MODULE_AUTHOR("megaraidlinux@lsi.com"); @@ -3863,10 +3867,20 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) if (megasas_init_mfi(instance)) goto fail_init_mfi; + /* Try to enable MSI-X */ + if ((instance->pdev->device != PCI_DEVICE_ID_LSI_SAS1078R) && + (instance->pdev->device != PCI_DEVICE_ID_LSI_SAS1078DE) && + (instance->pdev->device != PCI_DEVICE_ID_LSI_VERDE_ZCR) && + !msix_disable && !pci_enable_msix(instance->pdev, + &instance->msixentry, 1)) + instance->msi_flag = 1; + /* * Register IRQ */ - if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED, "megasas", instance)) { + if (request_irq(instance->msi_flag ? instance->msixentry.vector : + pdev->irq, megasas_isr, + IRQF_SHARED, "megasas", instance)) { printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); goto fail_irq; } @@ -3911,8 +3925,10 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) pci_set_drvdata(pdev, NULL); instance->instancet->disable_intr(instance->reg_set); - free_irq(instance->pdev->irq, instance); - + free_irq(instance->msi_flag ? instance->msixentry.vector : + instance->pdev->irq, instance); + if (instance->msi_flag) + pci_disable_msix(instance->pdev); megasas_release_mfi(instance); fail_irq: @@ -4053,7 +4069,10 @@ megasas_suspend(struct pci_dev *pdev, pm_message_t state) pci_set_drvdata(instance->pdev, instance); instance->instancet->disable_intr(instance->reg_set); - free_irq(instance->pdev->irq, instance); + free_irq(instance->msi_flag ? instance->msixentry.vector : + instance->pdev->irq, instance); + if (instance->msi_flag) + pci_disable_msix(instance->pdev); pci_save_state(pdev); pci_disable_device(pdev); @@ -4116,11 +4135,16 @@ megasas_resume(struct pci_dev *pdev) tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc, (unsigned long)instance); + /* Now re-enable MSI-X */ + if (instance->msi_flag) + pci_enable_msix(instance->pdev, &instance->msixentry, 1); + /* * Register IRQ */ - if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED, - "megasas", instance)) { + if (request_irq(instance->msi_flag ? instance->msixentry.vector : + pdev->irq, megasas_isr, + IRQF_SHARED, "megasas", instance)) { printk(KERN_ERR "megasas: Failed to register IRQ\n"); goto fail_irq; } @@ -4218,7 +4242,10 @@ static void __devexit megasas_detach_one(struct pci_dev *pdev) instance->instancet->disable_intr(instance->reg_set); - free_irq(instance->pdev->irq, instance); + free_irq(instance->msi_flag ? instance->msixentry.vector : + instance->pdev->irq, instance); + if (instance->msi_flag) + pci_disable_msix(instance->pdev); megasas_release_mfi(instance); |
