mirror of https://github.com/mpv-player/mpv
191 lines
4.0 KiB
C
191 lines
4.0 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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#include <errno.h>
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#ifdef __i386__
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//#include <sys/perm.h> doesn't exist on libc5 systems
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int iopl();
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#else
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#if !defined(__sparc__) && !defined(__powerpc__) && !defined(__x86_64__)
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#include <sys/io.h>
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#endif
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#endif
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#include "config.h"
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#ifdef CONFIG_DHAHELPER
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#include <fcntl.h>
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int dhahelper_initialized = 0;
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int dhahelper_fd = 0;
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#endif
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#ifdef CONFIG_SVGAHELPER
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#include <svgalib_helper.h>
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#ifdef __linux__
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#include <linux/ioctl.h>
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#endif
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#include <fcntl.h>
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#ifndef SVGALIB_HELPER_IOC_MAGIC
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/* svgalib 1.9.18+ compatibility ::atmos */
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#define SVGALIB_HELPER_IOCGPCIINL SVGAHELPER_PCIINL
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#endif
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int svgahelper_initialized = 0;
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int svgahelper_fd = 0;
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static int pci_config_type(void)
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{
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return 1;
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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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unsigned long config_cmd;
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pcic_t p;
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p.address = cmd;
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p.pcipos = (bus << 8) | dev | (func << 5);
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if (ioctl(svgahelper_fd, SVGALIB_HELPER_IOCGPCIINL, &p))
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return -1;
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return p.val;
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}
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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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return pci_config_read_long(bus, dev, func, 0);
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}
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#endif
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static __inline__ int enable_os_io(void)
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{
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#ifdef CONFIG_SVGAHELPER
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svgahelper_fd = open(DEV_SVGA, O_RDWR);
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if (svgahelper_fd > 0)
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{
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svgahelper_initialized = 1;
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return(0);
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}
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svgahelper_initialized = -1;
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#endif
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#ifdef CONFIG_DHAHELPER
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dhahelper_fd = open("/dev/dhahelper", O_RDWR);
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if (dhahelper_fd > 0)
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{
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dhahelper_initialized = 1;
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return(0);
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}
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dhahelper_initialized = -1;
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#endif
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#if defined(__powerpc__) && defined(__linux__)
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/* should be fixed? */
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#else
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if (iopl(3) != 0)
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return(errno);
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#endif
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return(0);
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}
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static __inline__ int disable_os_io(void)
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{
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#ifdef CONFIG_SVGAHELPER
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if (svgahelper_initialized == 1)
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close(svgahelper_fd);
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else
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#endif
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#ifdef CONFIG_DHAHELPER
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if (dhahelper_initialized == 1)
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close(dhahelper_fd);
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else
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#endif
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#if defined(__powerpc__) && defined(__linux__)
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/* should be fixed? */
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#else
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if (iopl(0) != 0)
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return(errno);
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#endif
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return(0);
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}
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#if (defined(__powerpc__) || defined(__sparc__) || defined(__sparc64__) \
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|| defined(__x86_64__)) && defined(__linux__) && !defined(CONFIG_SVGAHELPER)
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#define CONFIG_PCI_LINUX_PROC
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#endif
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#if defined(CONFIG_PCI_LINUX_PROC)
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static int pci_config_type( void ) { return 1; }
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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 = le2me_16(vendor);
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device = le2me_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 = le2me_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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#endif
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