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author | Chris Zankel <chris@zankel.net> | 2007-08-04 14:31:04 -0700 |
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committer | Chris Zankel <chris@zankel.net> | 2007-08-27 13:53:22 -0700 |
commit | 787a22d1d284b21ad810fd0bedbdefb329f31cd2 (patch) | |
tree | 3474f2b514ce0b7a9ca9c9ece412556bf6f0b191 /arch/xtensa/kernel/io.c | |
parent | 73089cbfdf0c69e061a4fa90d614679e630c6727 (diff) | |
download | op-kernel-dev-787a22d1d284b21ad810fd0bedbdefb329f31cd2.zip op-kernel-dev-787a22d1d284b21ad810fd0bedbdefb329f31cd2.tar.gz |
[XTENSA] Move string-io functions to io.c from pci.c
The string-io functions (outs{bwl}, ins{bwl}) are independent from
the PCI option and should be in a separate file.
Signed-off-by: Chris Zankel <chris@zankel.net>
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; + } +} |