diff options
| -rw-r--r-- | arch/mips/include/asm/pci.h | 5 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/pci.h | 5 | ||||
| -rw-r--r-- | arch/s390/include/asm/pci.h | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/pci.h | 30 | ||||
| -rw-r--r-- | arch/x86/kernel/x86_init.c | 24 | ||||
| -rw-r--r-- | drivers/pci/msi.c | 48 | ||||
| -rw-r--r-- | include/linux/msi.h | 8 |
7 files changed, 55 insertions, 69 deletions
diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h index fa8e0aa..f194c08 100644 --- a/arch/mips/include/asm/pci.h +++ b/arch/mips/include/asm/pci.h @@ -136,11 +136,6 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) return channel ? 15 : 14; } -#ifdef CONFIG_CPU_CAVIUM_OCTEON -/* MSI arch hook for OCTEON */ -#define arch_setup_msi_irqs arch_setup_msi_irqs -#endif - extern char * (*pcibios_plat_setup)(char *str); #ifdef CONFIG_OF diff --git a/arch/powerpc/include/asm/pci.h b/arch/powerpc/include/asm/pci.h index 6653f27..95145a1 100644 --- a/arch/powerpc/include/asm/pci.h +++ b/arch/powerpc/include/asm/pci.h @@ -113,11 +113,6 @@ extern int pci_domain_nr(struct pci_bus *bus); /* Decide whether to display the domain number in /proc */ extern int pci_proc_domain(struct pci_bus *bus); -/* MSI arch hooks */ -#define arch_setup_msi_irqs arch_setup_msi_irqs -#define arch_teardown_msi_irqs arch_teardown_msi_irqs -#define arch_msi_check_device arch_msi_check_device - struct vm_area_struct; /* Map a range of PCI memory or I/O space for a device into user space */ int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma, diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h index 6e577ba..262b91b 100644 --- a/arch/s390/include/asm/pci.h +++ b/arch/s390/include/asm/pci.h @@ -21,10 +21,6 @@ void pci_iounmap(struct pci_dev *, void __iomem *); int pci_domain_nr(struct pci_bus *); int pci_proc_domain(struct pci_bus *); -/* MSI arch hooks */ -#define arch_setup_msi_irqs arch_setup_msi_irqs -#define arch_teardown_msi_irqs arch_teardown_msi_irqs - #define ZPCI_BUS_NR 0 /* default bus number */ #define ZPCI_DEVFN 0 /* default device number */ diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index d9e9e6c..7d74432 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -100,29 +100,6 @@ static inline void early_quirks(void) { } extern void pci_iommu_alloc(void); #ifdef CONFIG_PCI_MSI -/* MSI arch specific hooks */ -static inline int x86_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) -{ - return x86_msi.setup_msi_irqs(dev, nvec, type); -} - -static inline void x86_teardown_msi_irqs(struct pci_dev *dev) -{ - x86_msi.teardown_msi_irqs(dev); -} - -static inline void x86_teardown_msi_irq(unsigned int irq) -{ - x86_msi.teardown_msi_irq(irq); -} -static inline void x86_restore_msi_irqs(struct pci_dev *dev, int irq) -{ - x86_msi.restore_msi_irqs(dev, irq); -} -#define arch_setup_msi_irqs x86_setup_msi_irqs -#define arch_teardown_msi_irqs x86_teardown_msi_irqs -#define arch_teardown_msi_irq x86_teardown_msi_irq -#define arch_restore_msi_irqs x86_restore_msi_irqs /* implemented in arch/x86/kernel/apic/io_apic. */ struct msi_desc; int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); @@ -130,16 +107,9 @@ void native_teardown_msi_irq(unsigned int irq); void native_restore_msi_irqs(struct pci_dev *dev, int irq); int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, unsigned int irq_base, unsigned int irq_offset); -/* default to the implementation in drivers/lib/msi.c */ -#define HAVE_DEFAULT_MSI_TEARDOWN_IRQS -#define HAVE_DEFAULT_MSI_RESTORE_IRQS -void default_teardown_msi_irqs(struct pci_dev *dev); -void default_restore_msi_irqs(struct pci_dev *dev, int irq); #else #define native_setup_msi_irqs NULL #define native_teardown_msi_irq NULL -#define default_teardown_msi_irqs NULL -#define default_restore_msi_irqs NULL #endif #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index 45a14db..5587f99 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -107,6 +107,8 @@ struct x86_platform_ops x86_platform = { }; EXPORT_SYMBOL_GPL(x86_platform); + +#if defined(CONFIG_PCI_MSI) struct x86_msi_ops x86_msi = { .setup_msi_irqs = native_setup_msi_irqs, .compose_msi_msg = native_compose_msi_msg, @@ -116,6 +118,28 @@ struct x86_msi_ops x86_msi = { .setup_hpet_msi = default_setup_hpet_msi, }; +/* MSI arch specific hooks */ +int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) +{ + return x86_msi.setup_msi_irqs(dev, nvec, type); +} + +void arch_teardown_msi_irqs(struct pci_dev *dev) +{ + x86_msi.teardown_msi_irqs(dev); +} + +void arch_teardown_msi_irq(unsigned int irq) +{ + x86_msi.teardown_msi_irq(irq); +} + +void arch_restore_msi_irqs(struct pci_dev *dev, int irq) +{ + x86_msi.restore_msi_irqs(dev, irq); +} +#endif + struct x86_io_apic_ops x86_io_apic_ops = { .init = native_io_apic_init_mappings, .read = native_io_apic_read, diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index aca7578..823c386 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -30,20 +30,21 @@ static int pci_msi_enable = 1; /* Arch hooks */ -#ifndef arch_msi_check_device -int arch_msi_check_device(struct pci_dev *dev, int nvec, int type) +int __weak arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc) { - return 0; + return -EINVAL; } -#endif -#ifndef arch_setup_msi_irqs -# define arch_setup_msi_irqs default_setup_msi_irqs -# define HAVE_DEFAULT_MSI_SETUP_IRQS -#endif +void __weak arch_teardown_msi_irq(unsigned int irq) +{ +} -#ifdef HAVE_DEFAULT_MSI_SETUP_IRQS -int default_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) +int __weak arch_msi_check_device(struct pci_dev *dev, int nvec, int type) +{ + return 0; +} + +int __weak arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) { struct msi_desc *entry; int ret; @@ -65,14 +66,11 @@ int default_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) return 0; } -#endif - -#ifndef arch_teardown_msi_irqs -# define arch_teardown_msi_irqs default_teardown_msi_irqs -# define HAVE_DEFAULT_MSI_TEARDOWN_IRQS -#endif -#ifdef HAVE_DEFAULT_MSI_TEARDOWN_IRQS +/* + * We have a default implementation available as a separate non-weak + * function, as it is used by the Xen x86 PCI code + */ void default_teardown_msi_irqs(struct pci_dev *dev) { struct msi_desc *entry; @@ -89,14 +87,12 @@ void default_teardown_msi_irqs(struct pci_dev *dev) arch_teardown_msi_irq(entry->irq + i); } } -#endif -#ifndef arch_restore_msi_irqs -# define arch_restore_msi_irqs default_restore_msi_irqs -# define HAVE_DEFAULT_MSI_RESTORE_IRQS -#endif +void __weak arch_teardown_msi_irqs(struct pci_dev *dev) +{ + return default_teardown_msi_irqs(dev); +} -#ifdef HAVE_DEFAULT_MSI_RESTORE_IRQS void default_restore_msi_irqs(struct pci_dev *dev, int irq) { struct msi_desc *entry; @@ -114,7 +110,11 @@ void default_restore_msi_irqs(struct pci_dev *dev, int irq) if (entry) write_msi_msg(irq, &entry->msg); } -#endif + +void __weak arch_restore_msi_irqs(struct pci_dev *dev, int irq) +{ + return default_restore_msi_irqs(dev, irq); +} static void msi_set_enable(struct pci_dev *dev, int enable) { diff --git a/include/linux/msi.h b/include/linux/msi.h index ee66f3a..271dfd1 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -51,12 +51,18 @@ struct msi_desc { }; /* - * The arch hook for setup up msi irqs + * The arch hooks to setup up msi irqs. Those functions are + * implemented as weak symbols so that they /can/ be overriden by + * architecture specific code if needed. */ int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc); void arch_teardown_msi_irq(unsigned int irq); int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type); void arch_teardown_msi_irqs(struct pci_dev *dev); int arch_msi_check_device(struct pci_dev* dev, int nvec, int type); +void arch_restore_msi_irqs(struct pci_dev *dev, int irq); + +void default_teardown_msi_irqs(struct pci_dev *dev); +void default_restore_msi_irqs(struct pci_dev *dev, int irq); #endif /* LINUX_MSI_H */ |