diff options
Diffstat (limited to 'arch/blackfin/include')
| -rw-r--r-- | arch/blackfin/include/asm/io.h | 238 |
1 files changed, 37 insertions, 201 deletions
diff --git a/arch/blackfin/include/asm/io.h b/arch/blackfin/include/asm/io.h index 7d89cca..dccae26 100644 --- a/arch/blackfin/include/asm/io.h +++ b/arch/blackfin/include/asm/io.h @@ -1,5 +1,5 @@ /* - * Copyright 2004-2009 Analog Devices Inc. + * Copyright 2004-2010 Analog Devices Inc. * * Licensed under the GPL-2 or later. */ @@ -7,148 +7,48 @@ #ifndef _BFIN_IO_H #define _BFIN_IO_H -#ifdef __KERNEL__ - -#ifndef __ASSEMBLY__ -#include <linux/types.h> -#endif #include <linux/compiler.h> - -/* - * These are for ISA/PCI shared memory _only_ and should never be used - * on any other type of memory, including Zorro memory. They are meant to - * access the bus in the bus byte order which is little-endian!. - * - * readX/writeX() are used to access memory mapped devices. On some - * architectures the memory mapped IO stuff needs to be accessed - * differently. On the bfin architecture, we just read/write the - * memory location directly. - */ -#ifndef __ASSEMBLY__ - -static inline unsigned char readb(const volatile void __iomem *addr) -{ - unsigned int val; - int tmp; - - __asm__ __volatile__ ( - "cli %1;" - "NOP; NOP; SSYNC;" - "%0 = b [%2] (z);" - "sti %1;" - : "=d"(val), "=d"(tmp) - : "a"(addr) - ); - - return (unsigned char) val; -} - -static inline unsigned short readw(const volatile void __iomem *addr) -{ - unsigned int val; - int tmp; - - __asm__ __volatile__ ( - "cli %1;" - "NOP; NOP; SSYNC;" - "%0 = w [%2] (z);" - "sti %1;" - : "=d"(val), "=d"(tmp) - : "a"(addr) - ); - - return (unsigned short) val; -} - -static inline unsigned int readl(const volatile void __iomem *addr) -{ - unsigned int val; - int tmp; - - __asm__ __volatile__ ( - "cli %1;" - "NOP; NOP; SSYNC;" - "%0 = [%2];" - "sti %1;" - : "=d"(val), "=d"(tmp) - : "a"(addr) - ); - - return val; +#include <linux/types.h> +#include <asm/byteorder.h> + +#define DECLARE_BFIN_RAW_READX(size, type, asm, asm_sign) \ +static inline type __raw_read##size(const volatile void __iomem *addr) \ +{ \ + unsigned int val; \ + int tmp; \ + __asm__ __volatile__ ( \ + "cli %1;" \ + "NOP; NOP; SSYNC;" \ + "%0 = "#asm" [%2] "#asm_sign";" \ + "sti %1;" \ + : "=d"(val), "=d"(tmp) \ + : "a"(addr) \ + ); \ + return (type) val; \ } - -#endif /* __ASSEMBLY__ */ - -#define writeb(b, addr) (void)((*(volatile unsigned char *) (addr)) = (b)) -#define writew(b, addr) (void)((*(volatile unsigned short *) (addr)) = (b)) -#define writel(b, addr) (void)((*(volatile unsigned int *) (addr)) = (b)) - -#define __raw_readb readb -#define __raw_readw readw -#define __raw_readl readl -#define __raw_writeb writeb -#define __raw_writew writew -#define __raw_writel writel -#define memset_io(a, b, c) memset((void *)(a), (b), (c)) -#define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c)) -#define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c)) - -/* Convert "I/O port addresses" to actual addresses. i.e. ugly casts. */ -#define __io(port) ((void *)(unsigned long)(port)) - -#define inb(port) readb(__io(port)) -#define inw(port) readw(__io(port)) -#define inl(port) readl(__io(port)) -#define outb(x, port) writeb(x, __io(port)) -#define outw(x, port) writew(x, __io(port)) -#define outl(x, port) writel(x, __io(port)) - -#define inb_p(port) inb(__io(port)) -#define inw_p(port) inw(__io(port)) -#define inl_p(port) inl(__io(port)) -#define outb_p(x, port) outb(x, __io(port)) -#define outw_p(x, port) outw(x, __io(port)) -#define outl_p(x, port) outl(x, __io(port)) - -#define ioread8_rep(a, d, c) readsb(a, d, c) -#define ioread16_rep(a, d, c) readsw(a, d, c) -#define ioread32_rep(a, d, c) readsl(a, d, c) -#define iowrite8_rep(a, s, c) writesb(a, s, c) -#define iowrite16_rep(a, s, c) writesw(a, s, c) -#define iowrite32_rep(a, s, c) writesl(a, s, c) - -#define ioread8(x) readb(x) -#define ioread16(x) readw(x) -#define ioread32(x) readl(x) -#define iowrite8(val, x) writeb(val, x) -#define iowrite16(val, x) writew(val, x) -#define iowrite32(val, x) writel(val, x) - -/** - * I/O write barrier - * - * Ensure ordering of I/O space writes. This will make sure that writes - * following the barrier will arrive after all previous writes. - */ -#define mmiowb() do { SSYNC(); wmb(); } while (0) - -#define IO_SPACE_LIMIT 0xffffffff - -/* Values for nocacheflag and cmode */ -#define IOMAP_NOCACHE_SER 1 - -#ifndef __ASSEMBLY__ +DECLARE_BFIN_RAW_READX(b, u8, b, (z)) +#define __raw_readb __raw_readb +DECLARE_BFIN_RAW_READX(w, u16, w, (z)) +#define __raw_readw __raw_readw +DECLARE_BFIN_RAW_READX(l, u32, , ) +#define __raw_readl __raw_readl extern void outsb(unsigned long port, const void *addr, unsigned long count); extern void outsw(unsigned long port, const void *addr, unsigned long count); extern void outsw_8(unsigned long port, const void *addr, unsigned long count); extern void outsl(unsigned long port, const void *addr, unsigned long count); +#define outsb outsb +#define outsw outsw +#define outsl outsl extern void insb(unsigned long port, void *addr, unsigned long count); extern void insw(unsigned long port, void *addr, unsigned long count); extern void insw_8(unsigned long port, void *addr, unsigned long count); extern void insl(unsigned long port, void *addr, unsigned long count); extern void insl_16(unsigned long port, void *addr, unsigned long count); +#define insb insb +#define insw insw +#define insl insl extern void dma_outsb(unsigned long port, const void *addr, unsigned short count); extern void dma_outsw(unsigned long port, const void *addr, unsigned short count); @@ -158,78 +58,14 @@ extern void dma_insb(unsigned long port, void *addr, unsigned short count); extern void dma_insw(unsigned long port, void *addr, unsigned short count); extern void dma_insl(unsigned long port, void *addr, unsigned short count); -/* - * Map some physical address range into the kernel address space. - */ -static inline void __iomem *__ioremap(unsigned long physaddr, unsigned long size, - int cacheflag) -{ - return (void __iomem *)physaddr; -} - -/* - * Unmap a ioremap()ed region again - */ -static inline void iounmap(void *addr) -{ -} - -/* - * __iounmap unmaps nearly everything, so be careful - * it doesn't free currently pointer/page tables anymore but it - * wans't used anyway and might be added later. - */ -static inline void __iounmap(void *addr, unsigned long size) -{ -} - -/* - * Set new cache mode for some kernel address space. - * The caller must push data for that range itself, if such data may already - * be in the cache. +/** + * I/O write barrier + * + * Ensure ordering of I/O space writes. This will make sure that writes + * following the barrier will arrive after all previous writes. */ -static inline void kernel_set_cachemode(void *addr, unsigned long size, - int cmode) -{ -} - -static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size) -{ - return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); -} -static inline void __iomem *ioremap_nocache(unsigned long physaddr, - unsigned long size) -{ - return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); -} +#define mmiowb() do { SSYNC(); wmb(); } while (0) -extern void blkfin_inv_cache_all(void); +#include <asm-generic/io.h> #endif - -#define ioport_map(port, nr) ((void __iomem*)(port)) -#define ioport_unmap(addr) - -/* Pages to physical address... */ -#define page_to_bus(page) ((page - mem_map) << PAGE_SHIFT) - -#define phys_to_virt(vaddr) ((void *) (vaddr)) -#define virt_to_phys(vaddr) ((unsigned long) (vaddr)) - -#define virt_to_bus virt_to_phys -#define bus_to_virt phys_to_virt - -/* - * Convert a physical pointer to a virtual kernel pointer for /dev/mem - * access - */ -#define xlate_dev_mem_ptr(p) __va(p) - -/* - * Convert a virtual cached pointer to an uncached pointer - */ -#define xlate_dev_kmem_ptr(p) p - -#endif /* __KERNEL__ */ - -#endif /* _BFIN_IO_H */ |