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/*
This file is based on:
$XFree86: xc/programs/Xserver/hw/xfree86/etc/scanpci.c,v 3.34.2.17 1998/11/10 11:55:40 dawes Exp $
Modified for readability by Nick Kurshev
*/
/*
* Copyright 1995 by Robin Cutshaw <robin@XFree86.Org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the names of the above listed copyright holder(s)
* not be used in advertising or publicity pertaining to distribution of
* the software without specific, written prior permission. The above listed
* copyright holder(s) make(s) no representations about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*
* THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM(S) ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE
* LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
* DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <errno.h>
#ifdef __i386__
//#include <sys/perm.h> doesn't exist on libc5 systems
int iopl();
#else
#if !defined(__sparc__) && !defined(__powerpc__) && !defined(__x86_64__)
#include <sys/io.h>
#endif
#endif
#include "config.h"
#ifdef CONFIG_DHAHELPER
#include <fcntl.h>
int dhahelper_initialized = 0;
int dhahelper_fd = 0;
#endif
#ifdef CONFIG_SVGAHELPER
#include <svgalib_helper.h>
#ifdef __linux__
#include <linux/ioctl.h>
#endif
#include <fcntl.h>
#ifndef SVGALIB_HELPER_IOC_MAGIC
/* svgalib 1.9.18+ compatibility ::atmos */
#define SVGALIB_HELPER_IOCGPCIINL SVGAHELPER_PCIINL
#endif
int svgahelper_initialized = 0;
int svgahelper_fd = 0;
static int pci_config_type(void)
{
return 1;
}
static long pci_config_read_long(
unsigned char bus,
unsigned char dev,
int func,
unsigned cmd)
{
unsigned long config_cmd;
pcic_t p;
p.address = cmd;
p.pcipos = (bus << 8) | dev | (func << 5);
if (ioctl(svgahelper_fd, SVGALIB_HELPER_IOCGPCIINL, &p))
return -1;
return p.val;
}
static int pci_get_vendor(
unsigned char bus,
unsigned char dev,
int func)
{
return pci_config_read_long(bus, dev, func, 0);
}
#endif
static __inline__ int enable_os_io(void)
{
#ifdef CONFIG_SVGAHELPER
svgahelper_fd = open(DEV_SVGA, O_RDWR);
if (svgahelper_fd > 0)
{
svgahelper_initialized = 1;
return(0);
}
svgahelper_initialized = -1;
#endif
#ifdef CONFIG_DHAHELPER
dhahelper_fd = open("/dev/dhahelper", O_RDWR);
if (dhahelper_fd > 0)
{
dhahelper_initialized = 1;
return(0);
}
dhahelper_initialized = -1;
#endif
#if defined(__powerpc__) && defined(__linux__)
/* should be fixed? */
#else
if (iopl(3) != 0)
return(errno);
#endif
return(0);
}
static __inline__ int disable_os_io(void)
{
#ifdef CONFIG_SVGAHELPER
if (svgahelper_initialized == 1)
close(svgahelper_fd);
else
#endif
#ifdef CONFIG_DHAHELPER
if (dhahelper_initialized == 1)
close(dhahelper_fd);
else
#endif
#if defined(__powerpc__) && defined(__linux__)
/* should be fixed? */
#else
if (iopl(0) != 0)
return(errno);
#endif
return(0);
}
#if (defined(__powerpc__) || defined(__sparc__) || defined(__sparc64__) \
|| defined(__x86_64__)) && defined(__linux__) && !defined(CONFIG_SVGAHELPER)
#define CONFIG_PCI_LINUX_PROC
#endif
#if defined(CONFIG_PCI_LINUX_PROC)
static int pci_config_type( void ) { return 1; }
/* pci operations for (powerpc) Linux
questions, suggestions etc:
mplayer-dev-eng@mplayerhq.hu, colin@colino.net*/
#include <fcntl.h>
//#include <sys/io.h>
#include <linux/pci.h>
#include "libavutil/common.h"
#include "mpbswap.h"
static int pci_get_vendor(
unsigned char bus,
unsigned char dev,
int func)
{
int retval;
char path[100];
int fd;
short vendor, device;
sprintf(path,"/proc/bus/pci/%02d/%02x.0", bus, dev);
fd = open(path,O_RDONLY|O_SYNC);
if (fd == -1) {
retval=0xFFFF;
}
else if (pread(fd, &vendor, 2, PCI_VENDOR_ID) == 2 &&
pread(fd, &device, 2, PCI_DEVICE_ID) == 2) {
vendor = le2me_16(vendor);
device = le2me_16(device);
retval = vendor + (device<<16); /*no worries about byte order,
all ppc are bigendian*/
} else {
retval = 0xFFFF;
}
if (fd > 0) {
close(fd);
}
return retval;
}
static long pci_config_read_long(
unsigned char bus,
unsigned char dev,
int func,
unsigned cmd)
{
long retval;
char path[100];
int fd;
sprintf(path,"/proc/bus/pci/%02d/%02x.0", bus, dev);
fd = open(path,O_RDONLY|O_SYNC);
if (fd == -1) {
retval=0;
}
else if (pread(fd, &retval, 4, cmd) == 4) {
retval = le2me_32(retval);
} else {
retval = 0;
}
if (fd > 0) {
close(fd);
}
return retval;
}
#endif
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