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author | David Woodhouse <dwmw2@infradead.org> | 2007-10-13 13:43:54 (GMT) |
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committer | David Woodhouse <dwmw2@infradead.org> | 2007-10-13 13:43:54 (GMT) |
commit | b160292cc216a50fd0cd386b0bda2cd48352c73b (patch) | |
tree | ef07cf98f91353ee4c9ec1e1ca7a2a5d9d4b538a /arch/xtensa/kernel/io.c | |
parent | b37bde147890c8fea8369a5a4e230dabdea4ebfb (diff) | |
parent | bbf25010f1a6b761914430f5fca081ec8c7accd1 (diff) | |
download | linux-fsl-qoriq-b160292cc216a50fd0cd386b0bda2cd48352c73b.tar.xz |
Merge Linux 2.6.23
Diffstat (limited to 'arch/xtensa/kernel/io.c')
-rw-r--r-- | arch/xtensa/kernel/io.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/arch/xtensa/kernel/io.c b/arch/xtensa/kernel/io.c new file mode 100644 index 0000000..5b65269 --- /dev/null +++ b/arch/xtensa/kernel/io.c @@ -0,0 +1,75 @@ +/* + * arch/xtensa/io.c + * + * IO primitives + * + * 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. + * + * Copied from sparc. + * + * Chris Zankel <chris@zankel.net> + * + */ + +#include <asm/io.h> +#include <asm/byteorder.h> + +void outsb(unsigned long addr, const void *src, unsigned long count) { + while (count) { + count -= 1; + writeb(*(const char *)src, addr); + src += 1; + addr += 1; + } +} + +void outsw(unsigned long addr, const void *src, unsigned long count) { + while (count) { + count -= 2; + writew(*(const short *)src, addr); + src += 2; + addr += 2; + } +} + +void outsl(unsigned long addr, const void *src, unsigned long count) { + while (count) { + count -= 4; + writel(*(const long *)src, addr); + src += 4; + addr += 4; + } +} + +void insb(unsigned long addr, void *dst, unsigned long count) { + while (count) { + count -= 1; + *(unsigned char *)dst = readb(addr); + dst += 1; + addr += 1; + } +} + +void insw(unsigned long addr, void *dst, unsigned long count) { + while (count) { + count -= 2; + *(unsigned short *)dst = readw(addr); + dst += 2; + addr += 2; + } +} + +void insl(unsigned long addr, void *dst, unsigned long count) { + while (count) { + count -= 4; + /* + * XXX I am sure we are in for an unaligned trap here. + */ + *(unsigned long *)dst = readl(addr); + dst += 4; + addr += 4; + } +} |