mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 15:50:57 +07:00
787a22d1d2
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>
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/*
|
|
* 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;
|
|
}
|
|
}
|