mirror of https://github.com/mpv-player/mpv
95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
/*
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This file is based on:
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$XFree86: xc/programs/Xserver/hw/xfree86/etc/scanpci.c,v 3.34.2.17 1998/11/10 11:55:40 dawes Exp $
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Modified for readability by Nick Kurshev
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*/
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static int pci_config_type( void ) { return 1; }
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#if defined(__powerpc__) && defined(__linux__)
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/* pci operations for powerpc Linux
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questions, suggestions etc:
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mplayer-dev-eng@mplayerhq.hu, colin@colino.net*/
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#include <fcntl.h>
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#include <sys/io.h>
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#include <linux/pci.h>
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#include "../../bswap.h"
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static int pci_get_vendor(
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unsigned char bus,
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unsigned char dev,
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int func)
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{
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int retval;
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char path[100];
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int fd;
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short vendor, device;
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sprintf(path,"/proc/bus/pci/%02d/%02x.0", bus, dev);
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fd = open(path,O_RDONLY|O_SYNC);
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if (fd == -1) {
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retval=0xFFFF;
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}
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else if (pread(fd, &vendor, 2, PCI_VENDOR_ID) == 2 &&
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pread(fd, &device, 2, PCI_DEVICE_ID) == 2) {
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vendor = bswap_16(vendor);
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device = bswap_16(device);
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retval = vendor + (device<<16); /*no worries about byte order,
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all ppc are bigendian*/
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} else {
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retval = 0xFFFF;
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}
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if (fd > 0) {
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close(fd);
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}
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return retval;
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}
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static long pci_config_read_long(
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unsigned char bus,
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unsigned char dev,
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int func,
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unsigned cmd)
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{
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long retval;
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char path[100];
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int fd;
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sprintf(path,"/proc/bus/pci/%02d/%02x.0", bus, dev);
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fd = open(path,O_RDONLY|O_SYNC);
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if (fd == -1) {
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retval=0;
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}
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else if (pread(fd, &retval, 4, cmd) == 4) {
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retval = bswap_32(retval);
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} else {
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retval = 0;
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}
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if (fd > 0) {
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close(fd);
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}
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return retval;
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}
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#else /*Lynx/OpenBSD*/
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static int pci_get_vendor(
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unsigned char bus,
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unsigned char dev,
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int func)
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{
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int retval;
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pciconfig_read(bus, dev<<3, PCI_ID_REG, 4, &retval);
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return retval;
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}
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static long pci_config_read_long(
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unsigned char bus,
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unsigned char dev,
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int func,
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unsigned cmd)
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{
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long retval;
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pciconfig_read(bus, dev<<3, cmd, 4, &retval);
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return retval;
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}
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#endif /*Lynx/OpenBSD*/
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