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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-m68k/raw_io.h | |
download | kernel_goldelico_gta04-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip kernel_goldelico_gta04-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz kernel_goldelico_gta04-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-m68k/raw_io.h')
-rw-r--r-- | include/asm-m68k/raw_io.h | 342 |
1 files changed, 342 insertions, 0 deletions
diff --git a/include/asm-m68k/raw_io.h b/include/asm-m68k/raw_io.h new file mode 100644 index 0000000..041f0a8 --- /dev/null +++ b/include/asm-m68k/raw_io.h @@ -0,0 +1,342 @@ +/* + * linux/include/asm-m68k/raw_io.h + * + * 10/20/00 RZ: - created from bits of io.h and ide.h to cleanup namespace + * + */ + +#ifndef _RAW_IO_H +#define _RAW_IO_H + +#ifdef __KERNEL__ + +#include <asm/types.h> + + +/* 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 iounmap(void *addr); + +extern void *__ioremap(unsigned long physaddr, unsigned long size, + int cacheflag); +extern void __iounmap(void *addr, unsigned long size); + + +/* ++roman: The assignments to temp. vars avoid that gcc sometimes generates + * two accesses to memory, which may be undesirable for some devices. + */ +#define in_8(addr) \ + ({ u8 __v = (*(volatile u8 *) (addr)); __v; }) +#define in_be16(addr) \ + ({ u16 __v = (*(volatile u16 *) (addr)); __v; }) +#define in_be32(addr) \ + ({ u32 __v = (*(volatile u32 *) (addr)); __v; }) +#define in_le16(addr) \ + ({ u16 __v = le16_to_cpu(*(volatile u16 *) (addr)); __v; }) +#define in_le32(addr) \ + ({ u32 __v = le32_to_cpu(*(volatile u32 *) (addr)); __v; }) + +#define out_8(addr,b) (void)((*(volatile u8 *) (addr)) = (b)) +#define out_be16(addr,w) (void)((*(volatile u16 *) (addr)) = (w)) +#define out_be32(addr,l) (void)((*(volatile u32 *) (addr)) = (l)) +#define out_le16(addr,w) (void)((*(volatile u16 *) (addr)) = cpu_to_le16(w)) +#define out_le32(addr,l) (void)((*(volatile u32 *) (addr)) = cpu_to_le32(l)) + +#define raw_inb in_8 +#define raw_inw in_be16 +#define raw_inl in_be32 + +#define raw_outb(val,port) out_8((port),(val)) +#define raw_outw(val,port) out_be16((port),(val)) +#define raw_outl(val,port) out_be32((port),(val)) + +static inline void raw_insb(volatile u8 *port, u8 *buf, unsigned int len) +{ + unsigned int i; + + for (i = 0; i < len; i++) + *buf++ = in_8(port); +} + +static inline void raw_outsb(volatile u8 *port, const u8 *buf, + unsigned int len) +{ + unsigned int i; + + for (i = 0; i < len; i++) + out_8(port, *buf++); +} + +static inline void raw_insw(volatile u16 *port, u16 *buf, unsigned int nr) +{ + unsigned int tmp; + + if (nr & 15) { + tmp = (nr & 15) - 1; + asm volatile ( + "1: movew %2@,%0@+; dbra %1,1b" + : "=a" (buf), "=d" (tmp) + : "a" (port), "0" (buf), + "1" (tmp)); + } + if (nr >> 4) { + tmp = (nr >> 4) - 1; + asm volatile ( + "1: " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "movew %2@,%0@+; " + "dbra %1,1b" + : "=a" (buf), "=d" (tmp) + : "a" (port), "0" (buf), + "1" (tmp)); + } +} + +static inline void raw_outsw(volatile u16 *port, const u16 *buf, + unsigned int nr) +{ + unsigned int tmp; + + if (nr & 15) { + tmp = (nr & 15) - 1; + asm volatile ( + "1: movew %0@+,%2@; dbra %1,1b" + : "=a" (buf), "=d" (tmp) + : "a" (port), "0" (buf), + "1" (tmp)); + } + if (nr >> 4) { + tmp = (nr >> 4) - 1; + asm volatile ( + "1: " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "movew %0@+,%2@; " + "dbra %1,1b" + : "=a" (buf), "=d" (tmp) + : "a" (port), "0" (buf), + "1" (tmp)); + } +} + +static inline void raw_insl(volatile u32 *port, u32 *buf, unsigned int nr) +{ + unsigned int tmp; + + if (nr & 15) { + tmp = (nr & 15) - 1; + asm volatile ( + "1: movel %2@,%0@+; dbra %1,1b" + : "=a" (buf), "=d" (tmp) + : "a" (port), "0" (buf), + "1" (tmp)); + } + if (nr >> 4) { + tmp = (nr >> 4) - 1; + asm volatile ( + "1: " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "movel %2@,%0@+; " + "dbra %1,1b" + : "=a" (buf), "=d" (tmp) + : "a" (port), "0" (buf), + "1" (tmp)); + } +} + +static inline void raw_outsl(volatile u32 *port, const u32 *buf, + unsigned int nr) +{ + unsigned int tmp; + + if (nr & 15) { + tmp = (nr & 15) - 1; + asm volatile ( + "1: movel %0@+,%2@; dbra %1,1b" + : "=a" (buf), "=d" (tmp) + : "a" (port), "0" (buf), + "1" (tmp)); + } + if (nr >> 4) { + tmp = (nr >> 4) - 1; + asm volatile ( + "1: " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "movel %0@+,%2@; " + "dbra %1,1b" + : "=a" (buf), "=d" (tmp) + : "a" (port), "0" (buf), + "1" (tmp)); + } +} + + +static inline void raw_insw_swapw(volatile u16 *port, u16 *buf, + unsigned int nr) +{ + if ((nr) % 8) + __asm__ __volatile__ + ("\tmovel %0,%/a0\n\t" + "movel %1,%/a1\n\t" + "movel %2,%/d6\n\t" + "subql #1,%/d6\n" + "1:\tmovew %/a0@,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a1@+\n\t" + "dbra %/d6,1b" + : + : "g" (port), "g" (buf), "g" (nr) + : "d0", "a0", "a1", "d6"); + else + __asm__ __volatile__ + ("movel %0,%/a0\n\t" + "movel %1,%/a1\n\t" + "movel %2,%/d6\n\t" + "lsrl #3,%/d6\n\t" + "subql #1,%/d6\n" + "1:\tmovew %/a0@,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a1@+\n\t" + "movew %/a0@,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a1@+\n\t" + "movew %/a0@,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a1@+\n\t" + "movew %/a0@,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a1@+\n\t" + "movew %/a0@,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a1@+\n\t" + "movew %/a0@,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a1@+\n\t" + "movew %/a0@,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a1@+\n\t" + "movew %/a0@,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a1@+\n\t" + "dbra %/d6,1b" + : + : "g" (port), "g" (buf), "g" (nr) + : "d0", "a0", "a1", "d6"); +} + +static inline void raw_outsw_swapw(volatile u16 *port, const u16 *buf, + unsigned int nr) +{ + if ((nr) % 8) + __asm__ __volatile__ + ("movel %0,%/a0\n\t" + "movel %1,%/a1\n\t" + "movel %2,%/d6\n\t" + "subql #1,%/d6\n" + "1:\tmovew %/a1@+,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a0@\n\t" + "dbra %/d6,1b" + : + : "g" (port), "g" (buf), "g" (nr) + : "d0", "a0", "a1", "d6"); + else + __asm__ __volatile__ + ("movel %0,%/a0\n\t" + "movel %1,%/a1\n\t" + "movel %2,%/d6\n\t" + "lsrl #3,%/d6\n\t" + "subql #1,%/d6\n" + "1:\tmovew %/a1@+,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a0@\n\t" + "movew %/a1@+,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a0@\n\t" + "movew %/a1@+,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a0@\n\t" + "movew %/a1@+,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a0@\n\t" + "movew %/a1@+,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a0@\n\t" + "movew %/a1@+,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a0@\n\t" + "movew %/a1@+,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a0@\n\t" + "movew %/a1@+,%/d0\n\t" + "rolw #8,%/d0\n\t" + "movew %/d0,%/a0@\n\t" + "dbra %/d6,1b" + : + : "g" (port), "g" (buf), "g" (nr) + : "d0", "a0", "a1", "d6"); +} + + +#endif /* __KERNEL__ */ + +#endif /* _RAW_IO_H */ |