diff options
Diffstat (limited to 'vidix/sysdep/pci_linux.c')
| -rw-r--r-- | vidix/sysdep/pci_linux.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/vidix/sysdep/pci_linux.c b/vidix/sysdep/pci_linux.c new file mode 100644 index 0000000000..ea667f6ee6 --- /dev/null +++ b/vidix/sysdep/pci_linux.c @@ -0,0 +1,191 @@ +/* + 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 +*/ +#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 |