projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 787a22d1 CZ |
1 | /* |
| 2 | * arch/xtensa/io.c | |
| 3 | * | |
| 4 | * IO primitives | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify it | |
| 7 | * under the terms of the GNU General Public License as published by the | |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 9 | * option) any later version. | |
| 10 | * | |
| 11 | * Copied from sparc. | |
| 12 | * | |
| 13 | * Chris Zankel <chris@zankel.net> | |
| 14 | * | |
| 15 | */ | |
| 16 | ||
| 17 | #include <asm/io.h> | |
| 18 | #include <asm/byteorder.h> | |
| 19 | ||
| 20 | void outsb(unsigned long addr, const void *src, unsigned long count) { | |
| 21 | while (count) { | |
| 22 | count -= 1; | |
| 23 | writeb(*(const char *)src, addr); | |
| 24 | src += 1; | |
| 25 | addr += 1; | |
| 26 | } | |
| 27 | } | |
| 28 | ||
| 29 | void outsw(unsigned long addr, const void *src, unsigned long count) { | |
| 30 | while (count) { | |
| 31 | count -= 2; | |
| 32 | writew(*(const short *)src, addr); | |
| 33 | src += 2; | |
| 34 | addr += 2; | |
| 35 | } | |
| 36 | } | |
| 37 | ||
| 38 | void outsl(unsigned long addr, const void *src, unsigned long count) { | |
| 39 | while (count) { | |
| 40 | count -= 4; | |
| 41 | writel(*(const long *)src, addr); | |
| 42 | src += 4; | |
| 43 | addr += 4; | |
| 44 | } | |
| 45 | } | |
| 46 | ||
| 47 | void insb(unsigned long addr, void *dst, unsigned long count) { | |
| 48 | while (count) { | |
| 49 | count -= 1; | |
| 50 | *(unsigned char *)dst = readb(addr); | |
| 51 | dst += 1; | |
| 52 | addr += 1; | |
| 53 | } | |
| 54 | } | |
| 55 | ||
| 56 | void insw(unsigned long addr, void *dst, unsigned long count) { | |
| 57 | while (count) { | |
| 58 | count -= 2; | |
| 59 | *(unsigned short *)dst = readw(addr); | |
| 60 | dst += 2; | |
| 61 | addr += 2; | |
| 62 | } | |
| 63 | } | |
| 64 | ||
| 65 | void insl(unsigned long addr, void *dst, unsigned long count) { | |
| 66 | while (count) { | |
| 67 | count -= 4; | |
| 68 | /* | |
| 69 | * XXX I am sure we are in for an unaligned trap here. | |
| 70 | */ | |
| 71 | *(unsigned long *)dst = readl(addr); | |
| 72 | dst += 4; | |
| 73 | addr += 4; | |
| 74 | } | |
| 75 | } |