Viewing file:  iomv.c (1.89 KB) -rw-r--r--
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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2000 Silicon Graphics, Inc.
* Copyright (C) 2000 by Jack Steiner (steiner@sgi.com)
* Copyright (C) 2000 Kanoj Sarcar (kanoj@sgi.com)
*/
#include <asm/io.h>
#include <linux/pci.h>
static inline void *
sn1_io_addr(unsigned long port)
{
if (!IS_RUNNING_ON_SIMULATOR()) {
return( (void *) (port | __IA64_UNCACHED_OFFSET));
} else {
unsigned long io_base;
unsigned long addr;
/*
* word align port, but need more than 10 bits
* for accessing registers in bedrock local block
* (so we don't do port&0xfff)
*/
if (port >= 0x1f0 && port <= 0x1f7 ||
port == 0x3f6 || port == 0x3f7) {
io_base = __IA64_UNCACHED_OFFSET | 0x00000FFFFC000000;
addr = io_base | ((port >> 2) << 12) | (port & 0xfff);
} else {
addr = __ia64_get_io_port_base() | ((port >> 2) << 2);
}
return(void *) addr;
}
}
unsigned int
sn1_inb (unsigned long port)
{
volatile unsigned char *addr = sn1_io_addr(port);
unsigned char ret;
ret = *addr;
__ia64_mf_a();
return ret;
}
unsigned int
sn1_inw (unsigned long port)
{
volatile unsigned short *addr = sn1_io_addr(port);
unsigned short ret;
ret = *addr;
__ia64_mf_a();
return ret;
}
unsigned int
sn1_inl (unsigned long port)
{
volatile unsigned int *addr = sn1_io_addr(port);
unsigned int ret;
ret = *addr;
__ia64_mf_a();
return ret;
}
void
sn1_outb (unsigned char val, unsigned long port)
{
volatile unsigned char *addr = sn1_io_addr(port);
*addr = val;
__ia64_mf_a();
}
void
sn1_outw (unsigned short val, unsigned long port)
{
volatile unsigned short *addr = sn1_io_addr(port);
*addr = val;
__ia64_mf_a();
}
void
sn1_outl (unsigned int val, unsigned long port)
{
volatile unsigned int *addr = sn1_io_addr(port);
*addr = val;
__ia64_mf_a();
}
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