diff options
Diffstat (limited to 'include/asm-blackfin/io.h')
| -rw-r--r-- | include/asm-blackfin/io.h | 194 |
1 files changed, 116 insertions, 78 deletions
diff --git a/include/asm-blackfin/io.h b/include/asm-blackfin/io.h index 6806494..75244a0 100644 --- a/include/asm-blackfin/io.h +++ b/include/asm-blackfin/io.h @@ -1,25 +1,9 @@ /* * U-boot - io.h IO routines * - * Copyright (c) 2005-2007 Analog Devices Inc. + * Copyright 2004-2009 Analog Devices Inc. * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, - * MA 02110-1301 USA + * Licensed under the GPL-2 or later. */ #ifndef _BLACKFIN_IO_H @@ -29,17 +13,13 @@ #include <asm/blackfin.h> +#define __iomem + static inline void sync(void) { SSYNC(); } -/* function prototypes for CF support */ -extern void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words); -extern void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words); -extern unsigned char cf_inb(volatile unsigned char *addr); -extern void cf_outb(unsigned char val, volatile unsigned char *addr); - /* * Given a physical address and a length, return a virtual address * that can be used to access the memory range with the caching @@ -76,114 +56,172 @@ static inline phys_addr_t virt_to_phys(void * vaddr) * * readX/writeX() are used to access memory mapped devices. On some * architectures the memory mapped IO stuff needs to be accessed - * differently. On the m68k architecture, we just read/write the + * differently. On the bfin architecture, we just read/write the * memory location directly. */ - #ifndef __ASSEMBLY__ -static inline unsigned char readb(const volatile void *addr) +static inline unsigned char readb(const volatile void __iomem *addr) { unsigned int val; int tmp; - __asm__ __volatile__ ("cli %1;\n\t" - "NOP; NOP; SSYNC;\n\t" - "%0 = b [%2] (z);\n\t" - "sti %1;\n\t" - : "=d"(val), "=d"(tmp): "a"(addr)); + __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 *addr) +static inline unsigned short readw(const volatile void __iomem *addr) { unsigned int val; int tmp; - __asm__ __volatile__ ("cli %1;\n\t" - "NOP; NOP; SSYNC;\n\t" - "%0 = w [%2] (z);\n\t" - "sti %1;\n\t" - : "=d"(val), "=d"(tmp): "a"(addr)); + __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 *addr) +static inline unsigned int readl(const volatile void __iomem *addr) { unsigned int val; int tmp; - __asm__ __volatile__ ("cli %1;\n\t" - "NOP; NOP; SSYNC;\n\t" - "%0 = [%2];\n\t" - "sti %1;\n\t" - : "=d"(val), "=d"(tmp): "a"(addr)); + __asm__ __volatile__ ( + "cli %1;" + "NOP; NOP; SSYNC;" + "%0 = [%2];" + "sti %1;" + : "=d"(val), "=d"(tmp) + : "a"(addr) + ); + return val; } -#define __raw_readb readb -#define __raw_readw readw -#define __raw_readl readl - #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)) -#define inb(addr) cf_inb((volatile unsigned char *)(addr)) -#define outb(x, addr) cf_outb((unsigned char)(x), (volatile unsigned char *)(addr)) - -#define insw(port, addr, count) cf_insw((unsigned short *)addr, (unsigned short *)(port), (count)) +/* 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) + +#define mmiowb() wmb() -#define outsw(port, addr, count) cf_outsw((unsigned short *)(port), (unsigned short *)addr, (count)) +#ifndef __ASSEMBLY__ -#define IO_SPACE_LIMIT 0xffff +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); -/* Values for nocacheflag and cmode */ -#define IOMAP_FULL_CACHING 0 -#define IOMAP_NOCACHE_SER 1 -#define IOMAP_NOCACHE_NONSER 2 -#define IOMAP_WRITETHROUGH 3 +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); -extern void *__ioremap(unsigned long physaddr, unsigned long size, - int cacheflag); -extern void __iounmap(void *addr, unsigned long size); +static inline void readsl(const void __iomem *addr, void *buf, int len) +{ + insl((unsigned long)addr, buf, len); +} -extern inline void *ioremap(unsigned long physaddr, unsigned long size) +static inline void readsw(const void __iomem *addr, void *buf, int len) { - return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); + insw((unsigned long)addr, buf, len); } -extern inline void *ioremap_nocache(unsigned long physaddr, unsigned long size) + +static inline void readsb(const void __iomem *addr, void *buf, int len) { - return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); + insb((unsigned long)addr, buf, len); } -extern inline void *ioremap_writethrough(unsigned long physaddr, - unsigned long size) + +static inline void writesl(const void __iomem *addr, const void *buf, int len) { - return __ioremap(physaddr, size, IOMAP_WRITETHROUGH); + outsl((unsigned long)addr, buf, len); } -extern inline void *ioremap_fullcache(unsigned long physaddr, - unsigned long size) + +static inline void writesw(const void __iomem *addr, const void *buf, int len) { - return __ioremap(physaddr, size, IOMAP_FULL_CACHING); + outsw((unsigned long)addr, buf, len); } -extern void iounmap(void *addr); +static inline void writesb(const void __iomem *addr, const void *buf, int len) +{ + outsb((unsigned long)addr, buf, len); +} -extern void blkfin_inv_cache_all(void); -#define dma_cache_inv(_start, _size) do { blkfin_inv_cache_all(); } while (0) -#define dma_cache_wback(_start, _size) do { } while (0) -#define dma_cache_wback_inv(_start, _size) do { blkfin_inv_cache_all(); } while (0) +#if defined(CONFIG_STAMP_CF) || defined(CONFIG_BFIN_IDE) +/* This hack for CF/IDE needs to be addressed at some point */ +extern void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words); +extern void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words); +extern unsigned char cf_inb(volatile unsigned char *addr); +extern void cf_outb(unsigned char val, volatile unsigned char *addr); +#undef inb +#undef outb +#undef insw +#undef outsw +#define inb(addr) cf_inb((void *)(addr)) +#define outb(x, addr) cf_outb((unsigned char)(x), (void *)(addr)) +#define insw(port, addr, cnt) cf_insw((void *)(addr), (void *)(port), cnt) +#define outsw(port, addr, cnt) cf_outsw((void *)(port), (void *)(addr), cnt) +#endif #endif + +#endif /* __KERNEL__ */ + #endif |