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/*
* Copyright (C) 2002-2003 The XFree86 Project, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of the XFree86 Project shall
* not be used in advertising or otherwise to promote the sale, use or other
* dealings in this Software without prior written authorization from the
* XFree86 Project.
*/
/*
* This file contains the glue needed to support various IA-64 chipsets.
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <linux/pci.h>
#include "compiler.h"
#include "Pci.h"
/*
* We use special in/out routines here since Altix platforms require the
* use of the sysfs legacy_io interface. The legacy_io file maps to the I/O
* space of a given PCI domain; reads and writes are used to do port I/O.
* The file descriptor for the file is stored in the upper bits of the
* value passed in by the caller, and is created and populated by
* xf86MapLegacyIO.
*
* If the legacy_io interface doesn't exist, we fall back to the glibc in/out
* routines, which are prefixed by an underscore (e.g. _outb).
*/
static int ia64_port_to_fd(unsigned long port)
{
return (port >> 24) & 0xffffffff;
}
_X_EXPORT void outb(unsigned long port, unsigned char val)
{
int fd = ia64_port_to_fd(port);
if (!fd) {
_outb(val, port & 0xffff);
goto out;
}
if (lseek(fd, port & 0xffff, SEEK_SET) == -1) {
ErrorF("I/O lseek failed\n");
goto out;
}
if (write(fd, &val, 1) != 1) {
ErrorF("I/O write failed\n");
goto out;
}
out:
return;
}
_X_EXPORT void outw(unsigned long port, unsigned short val)
{
int fd = ia64_port_to_fd(port);
if (!fd) {
_outw(val, port & 0xffff);
goto out;
}
if (lseek(fd, port & 0xffff, SEEK_SET) == -1) {
ErrorF("I/O lseek failed\n");
goto out;
}
if (write(fd, &val, 2) != 2) {
ErrorF("I/O write failed\n");
goto out;
}
out:
return;
}
_X_EXPORT void outl(unsigned long port, unsigned int val)
{
int fd = ia64_port_to_fd(port);
if (!fd) {
_outl(val, port & 0xffff);
goto out;
}
if (lseek(fd, port & 0xffff, SEEK_SET) == -1) {
ErrorF("I/O lseek failed\n");
goto out;
}
if (write(fd, &val, 4) != 4) {
ErrorF("I/O write failed\n");
goto out;
}
out:
return;
}
_X_EXPORT unsigned int inb(unsigned long port)
{
int fd = ia64_port_to_fd(port);
unsigned char val;
if (!fd)
return _inb(port & 0xffff);
if (lseek(fd, port & 0xffff, SEEK_SET) == -1) {
ErrorF("I/O lseek failed\n");
val = -1;
goto out;
}
if (read(fd, &val, 1) != 1) {
ErrorF("I/O read failed\n");
val = -1;
goto out;
}
out:
return val;
}
_X_EXPORT unsigned int inw(unsigned long port)
{
int fd = ia64_port_to_fd(port);
unsigned short val;
if (!fd)
return _inw(port & 0xffff);
if (lseek(fd, port & 0xffff, SEEK_SET) == -1) {
ErrorF("I/O lseek failed\n");
val = -1;
goto out;
}
if (read(fd, &val, 2) != 2) {
ErrorF("I/O read failed\n");
val = -1;
goto out;
}
out:
return val;
}
_X_EXPORT unsigned int inl(unsigned long port)
{
int fd = ia64_port_to_fd(port);
unsigned int val;
if (!fd)
return _inl(port & 0xffff);
if (lseek(fd, port & 0xffff, SEEK_SET) == -1) {
ErrorF("I/O lseek failed\n");
val = -1;
goto out;
}
if (read(fd, &val, 4) != 4) {
ErrorF("I/O read failed\n");
val = -1;
goto out;
}
out:
return val;
}
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