diff options
Diffstat (limited to 'include/asm-generic/io.h')
| -rw-r--r-- | include/asm-generic/io.h | 124 |
1 files changed, 102 insertions, 22 deletions
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index bcee6365dca..975e1cc75ed 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -12,14 +12,17 @@ #define __ASM_GENERIC_IO_H #include <asm/page.h> /* I/O is all done through memory accesses */ -#include <asm/cacheflush.h> #include <linux/types.h> #ifdef CONFIG_GENERIC_IOMAP #include <asm-generic/iomap.h> #endif +#include <asm-generic/pci_iomap.h> + +#ifndef mmiowb #define mmiowb() do {} while (0) +#endif /*****************************************************************************/ /* @@ -28,56 +31,92 @@ * differently. On the simple architectures, we just read/write the * memory location directly. */ +#ifndef __raw_readb static inline u8 __raw_readb(const volatile void __iomem *addr) { return *(const volatile u8 __force *) addr; } +#endif +#ifndef __raw_readw static inline u16 __raw_readw(const volatile void __iomem *addr) { return *(const volatile u16 __force *) addr; } +#endif +#ifndef __raw_readl static inline u32 __raw_readl(const volatile void __iomem *addr) { return *(const volatile u32 __force *) addr; } +#endif #define readb __raw_readb -#define readw(addr) __le16_to_cpu(__raw_readw(addr)) -#define readl(addr) __le32_to_cpu(__raw_readl(addr)) +#define readw readw +static inline u16 readw(const volatile void __iomem *addr) +{ + return __le16_to_cpu(__raw_readw(addr)); +} + +#define readl readl +static inline u32 readl(const volatile void __iomem *addr) +{ + return __le32_to_cpu(__raw_readl(addr)); +} + +#ifndef __raw_writeb static inline void __raw_writeb(u8 b, volatile void __iomem *addr) { *(volatile u8 __force *) addr = b; } +#endif +#ifndef __raw_writew static inline void __raw_writew(u16 b, volatile void __iomem *addr) { *(volatile u16 __force *) addr = b; } +#endif +#ifndef __raw_writel static inline void __raw_writel(u32 b, volatile void __iomem *addr) { *(volatile u32 __force *) addr = b; } +#endif #define writeb __raw_writeb #define writew(b,addr) __raw_writew(__cpu_to_le16(b),addr) #define writel(b,addr) __raw_writel(__cpu_to_le32(b),addr) #ifdef CONFIG_64BIT +#ifndef __raw_readq static inline u64 __raw_readq(const volatile void __iomem *addr) { return *(const volatile u64 __force *) addr; } -#define readq(addr) __le64_to_cpu(__raw_readq(addr)) +#endif + +#define readq readq +static inline u64 readq(const volatile void __iomem *addr) +{ + return __le64_to_cpu(__raw_readq(addr)); +} +#ifndef __raw_writeq static inline void __raw_writeq(u64 b, volatile void __iomem *addr) { *(volatile u64 __force *) addr = b; } -#define writeq(b,addr) __raw_writeq(__cpu_to_le64(b),addr) +#endif + +#define writeq(b, addr) __raw_writeq(__cpu_to_le64(b), addr) +#endif /* CONFIG_64BIT */ + +#ifndef PCI_IOBASE +#define PCI_IOBASE ((void __iomem *) 0) #endif /*****************************************************************************/ @@ -87,32 +126,32 @@ static inline void __raw_writeq(u64 b, volatile void __iomem *addr) static inline u8 inb(unsigned long addr) { - return readb((volatile void __iomem *) addr); + return readb(addr + PCI_IOBASE); } static inline u16 inw(unsigned long addr) { - return readw((volatile void __iomem *) addr); + return readw(addr + PCI_IOBASE); } static inline u32 inl(unsigned long addr) { - return readl((volatile void __iomem *) addr); + return readl(addr + PCI_IOBASE); } static inline void outb(u8 b, unsigned long addr) { - writeb(b, (volatile void __iomem *) addr); + writeb(b, addr + PCI_IOBASE); } static inline void outw(u16 b, unsigned long addr) { - writew(b, (volatile void __iomem *) addr); + writew(b, addr + PCI_IOBASE); } static inline void outl(u32 b, unsigned long addr) { - writel(b, (volatile void __iomem *) addr); + writel(b, addr + PCI_IOBASE); } #define inb_p(addr) inb(addr) @@ -122,77 +161,93 @@ static inline void outl(u32 b, unsigned long addr) #define outw_p(x, addr) outw((x), (addr)) #define outl_p(x, addr) outl((x), (addr)) +#ifndef insb static inline void insb(unsigned long addr, void *buffer, int count) { if (count) { u8 *buf = buffer; do { - u8 x = inb(addr); + u8 x = __raw_readb(addr + PCI_IOBASE); *buf++ = x; } while (--count); } } +#endif +#ifndef insw static inline void insw(unsigned long addr, void *buffer, int count) { if (count) { u16 *buf = buffer; do { - u16 x = inw(addr); + u16 x = __raw_readw(addr + PCI_IOBASE); *buf++ = x; } while (--count); } } +#endif +#ifndef insl static inline void insl(unsigned long addr, void *buffer, int count) { if (count) { u32 *buf = buffer; do { - u32 x = inl(addr); + u32 x = __raw_readl(addr + PCI_IOBASE); *buf++ = x; } while (--count); } } +#endif +#ifndef outsb static inline void outsb(unsigned long addr, const void *buffer, int count) { if (count) { const u8 *buf = buffer; do { - outb(*buf++, addr); + __raw_writeb(*buf++, addr + PCI_IOBASE); } while (--count); } } +#endif +#ifndef outsw static inline void outsw(unsigned long addr, const void *buffer, int count) { if (count) { const u16 *buf = buffer; do { - outw(*buf++, addr); + __raw_writew(*buf++, addr + PCI_IOBASE); } while (--count); } } +#endif +#ifndef outsl static inline void outsl(unsigned long addr, const void *buffer, int count) { if (count) { const u32 *buf = buffer; do { - outl(*buf++, addr); + __raw_writel(*buf++, addr + PCI_IOBASE); } while (--count); } } +#endif #ifndef CONFIG_GENERIC_IOMAP #define ioread8(addr) readb(addr) #define ioread16(addr) readw(addr) +#define ioread16be(addr) __be16_to_cpu(__raw_readw(addr)) #define ioread32(addr) readl(addr) +#define ioread32be(addr) __be32_to_cpu(__raw_readl(addr)) #define iowrite8(v, addr) writeb((v), (addr)) #define iowrite16(v, addr) writew((v), (addr)) +#define iowrite16be(v, addr) __raw_writew(__cpu_to_be16(v), addr) #define iowrite32(v, addr) writel((v), (addr)) +#define iowrite32be(v, addr) __raw_writel(__cpu_to_be32(v), addr) #define ioread8_rep(p, dst, count) \ insb((unsigned long) (p), (dst), (count)) @@ -209,8 +264,9 @@ static inline void outsl(unsigned long addr, const void *buffer, int count) outsl((unsigned long) (p), (src), (count)) #endif /* CONFIG_GENERIC_IOMAP */ - -#define IO_SPACE_LIMIT 0xffffffff +#ifndef IO_SPACE_LIMIT +#define IO_SPACE_LIMIT 0xffff +#endif #ifdef __KERNEL__ @@ -218,18 +274,21 @@ static inline void outsl(unsigned long addr, const void *buffer, int count) #define __io_virt(x) ((void __force *) (x)) #ifndef CONFIG_GENERIC_IOMAP -/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */ struct pci_dev; extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max); + +#ifndef pci_iounmap static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p) { } +#endif #endif /* CONFIG_GENERIC_IOMAP */ /* * Change virtual addresses to physical addresses and vv. * These are pretty trivial */ +#ifndef virt_to_phys static inline unsigned long virt_to_phys(volatile void *address) { return __pa((unsigned long)address); @@ -239,10 +298,15 @@ static inline void *phys_to_virt(unsigned long address) { return __va(address); } +#endif /* * Change "struct page" to physical address. + * + * This implementation is for the no-MMU case only... if you have an MMU + * you'll need to provide your own definitions. */ +#ifndef CONFIG_MMU static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size) { return (void __iomem*) (unsigned long)offset; @@ -258,10 +322,12 @@ static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size) #define ioremap_wc ioremap_nocache #endif -static inline void iounmap(void *addr) +static inline void iounmap(void __iomem *addr) { } +#endif /* CONFIG_MMU */ +#ifdef CONFIG_HAS_IOPORT_MAP #ifndef CONFIG_GENERIC_IOMAP static inline void __iomem *ioport_map(unsigned long port, unsigned int nr) { @@ -275,10 +341,16 @@ static inline void ioport_unmap(void __iomem *p) extern void __iomem *ioport_map(unsigned long port, unsigned int nr); extern void ioport_unmap(void __iomem *p); #endif /* CONFIG_GENERIC_IOMAP */ +#endif /* CONFIG_HAS_IOPORT_MAP */ +#ifndef xlate_dev_kmem_ptr #define xlate_dev_kmem_ptr(p) p -#define xlate_dev_mem_ptr(p) ((void *) (p)) +#endif +#ifndef xlate_dev_mem_ptr +#define xlate_dev_mem_ptr(p) __va(p) +#endif +#ifdef CONFIG_VIRT_TO_BUS #ifndef virt_to_bus static inline unsigned long virt_to_bus(volatile void *address) { @@ -290,10 +362,18 @@ static inline void *bus_to_virt(unsigned long address) return (void *) address; } #endif +#endif +#ifndef memset_io #define memset_io(a, b, c) memset(__io_virt(a), (b), (c)) +#endif + +#ifndef memcpy_fromio #define memcpy_fromio(a, b, c) memcpy((a), __io_virt(b), (c)) +#endif +#ifndef memcpy_toio #define memcpy_toio(a, b, c) memcpy(__io_virt(a), (b), (c)) +#endif #endif /* __KERNEL__ */ |