diff options
Diffstat (limited to 'drivers/pci/msi.c')
| -rw-r--r-- | drivers/pci/msi.c | 112 |
1 files changed, 58 insertions, 54 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 87e01615053..26938da8f43 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -25,6 +25,51 @@ static int pci_msi_enable = 1; +/* Arch hooks */ + +int __attribute__ ((weak)) +arch_msi_check_device(struct pci_dev *dev, int nvec, int type) +{ + return 0; +} + +int __attribute__ ((weak)) +arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *entry) +{ + return 0; +} + +int __attribute__ ((weak)) +arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) +{ + struct msi_desc *entry; + int ret; + + list_for_each_entry(entry, &dev->msi_list, list) { + ret = arch_setup_msi_irq(dev, entry); + if (ret) + return ret; + } + + return 0; +} + +void __attribute__ ((weak)) arch_teardown_msi_irq(unsigned int irq) +{ + return; +} + +void __attribute__ ((weak)) +arch_teardown_msi_irqs(struct pci_dev *dev) +{ + struct msi_desc *entry; + + list_for_each_entry(entry, &dev->msi_list, list) { + if (entry->irq != 0) + arch_teardown_msi_irq(entry->irq); + } +} + static void msi_set_enable(struct pci_dev *dev, int enable) { int pos; @@ -224,7 +269,12 @@ static struct msi_desc* alloc_msi_entry(void) return entry; } -#ifdef CONFIG_PM +static void pci_intx_for_msi(struct pci_dev *dev, int enable) +{ + if (!(dev->dev_flags & PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG)) + pci_intx(dev, enable); +} + static void __pci_restore_msi_state(struct pci_dev *dev) { int pos; @@ -237,7 +287,7 @@ static void __pci_restore_msi_state(struct pci_dev *dev) entry = get_irq_msi(dev->irq); pos = entry->msi_attrib.pos; - pci_intx(dev, 0); /* disable intx */ + pci_intx_for_msi(dev, 0); msi_set_enable(dev, 0); write_msi_msg(dev->irq, &entry->msg); if (entry->msi_attrib.maskbit) @@ -260,7 +310,7 @@ static void __pci_restore_msix_state(struct pci_dev *dev) return; /* route the table */ - pci_intx(dev, 0); /* disable intx */ + pci_intx_for_msi(dev, 0); msix_set_enable(dev, 0); list_for_each_entry(entry, &dev->msi_list, list) { @@ -282,7 +332,7 @@ void pci_restore_msi_state(struct pci_dev *dev) __pci_restore_msi_state(dev); __pci_restore_msix_state(dev); } -#endif /* CONFIG_PM */ +EXPORT_SYMBOL_GPL(pci_restore_msi_state); /** * msi_capability_init - configure device's MSI capability structure @@ -343,7 +393,7 @@ static int msi_capability_init(struct pci_dev *dev) } /* Set MSI enabled bits */ - pci_intx(dev, 0); /* disable intx */ + pci_intx_for_msi(dev, 0); msi_set_enable(dev, 1); dev->msi_enabled = 1; @@ -433,7 +483,7 @@ static int msix_capability_init(struct pci_dev *dev, i++; } /* Set MSI-X enabled bits */ - pci_intx(dev, 0); /* disable intx */ + pci_intx_for_msi(dev, 0); msix_set_enable(dev, 1); dev->msix_enabled = 1; @@ -528,7 +578,7 @@ void pci_disable_msi(struct pci_dev* dev) return; msi_set_enable(dev, 0); - pci_intx(dev, 1); /* enable intx */ + pci_intx_for_msi(dev, 1); dev->msi_enabled = 0; BUG_ON(list_empty(&dev->msi_list)); @@ -640,7 +690,7 @@ void pci_disable_msix(struct pci_dev* dev) return; msix_set_enable(dev, 0); - pci_intx(dev, 1); /* enable intx */ + pci_intx_for_msi(dev, 1); dev->msix_enabled = 0; msix_free_all_irqs(dev); @@ -677,49 +727,3 @@ void pci_msi_init_pci_dev(struct pci_dev *dev) { INIT_LIST_HEAD(&dev->msi_list); } - - -/* Arch hooks */ - -int __attribute__ ((weak)) -arch_msi_check_device(struct pci_dev* dev, int nvec, int type) -{ - return 0; -} - -int __attribute__ ((weak)) -arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *entry) -{ - return 0; -} - -int __attribute__ ((weak)) -arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) -{ - struct msi_desc *entry; - int ret; - - list_for_each_entry(entry, &dev->msi_list, list) { - ret = arch_setup_msi_irq(dev, entry); - if (ret) - return ret; - } - - return 0; -} - -void __attribute__ ((weak)) arch_teardown_msi_irq(unsigned int irq) -{ - return; -} - -void __attribute__ ((weak)) -arch_teardown_msi_irqs(struct pci_dev *dev) -{ - struct msi_desc *entry; - - list_for_each_entry(entry, &dev->msi_list, list) { - if (entry->irq != 0) - arch_teardown_msi_irq(entry->irq); - } -} |