05933aac7b
With the SGI SN2 machvec removal most of the indirections are unused now, so remove them. This includes the entire removal of the mmio read*/write* macros as the generic ones are identical to the asm-generic/io.h version. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lkml.kernel.org/r/20190813072514.23299-17-hch@lst.de Signed-off-by: Tony Luck <tony.luck@intel.com>
52 lines
935 B
C
52 lines
935 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
|
|
#include <asm/io.h>
|
|
|
|
/*
|
|
* Copy data from IO memory space to "real" memory space.
|
|
* This needs to be optimized.
|
|
*/
|
|
void memcpy_fromio(void *to, const volatile void __iomem *from, long count)
|
|
{
|
|
char *dst = to;
|
|
|
|
while (count) {
|
|
count--;
|
|
*dst++ = readb(from++);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(memcpy_fromio);
|
|
|
|
/*
|
|
* Copy data from "real" memory space to IO memory space.
|
|
* This needs to be optimized.
|
|
*/
|
|
void memcpy_toio(volatile void __iomem *to, const void *from, long count)
|
|
{
|
|
const char *src = from;
|
|
|
|
while (count) {
|
|
count--;
|
|
writeb(*src++, to++);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(memcpy_toio);
|
|
|
|
/*
|
|
* "memset" on IO memory space.
|
|
* This needs to be optimized.
|
|
*/
|
|
void memset_io(volatile void __iomem *dst, int c, long count)
|
|
{
|
|
unsigned char ch = (char)(c & 0xff);
|
|
|
|
while (count) {
|
|
count--;
|
|
writeb(ch, dst);
|
|
dst++;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(memset_io);
|