[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>
This commit is contained in:
75
arch/xtensa/kernel/io.c
Normal file
75
arch/xtensa/kernel/io.c
Normal file
@@ -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;
|
||||
}
|
||||
}
|
Reference in New Issue
Block a user