diff options
Diffstat (limited to 'contrib/libdha/sysdep/pci_powerpc.c')
| -rw-r--r-- | contrib/libdha/sysdep/pci_powerpc.c | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/contrib/libdha/sysdep/pci_powerpc.c b/contrib/libdha/sysdep/pci_powerpc.c new file mode 100644 index 000000000..667b4db37 --- /dev/null +++ b/contrib/libdha/sysdep/pci_powerpc.c @@ -0,0 +1,250 @@ +/* + 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 +*/ + +static int pci_config_type( void ) { return 1; } +#ifdef linux +#include <fcntl.h> +#include <sys/io.h> +#include <linux/pci.h> +#include "../../bswap.h" +#endif + +#ifdef linux +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 = bswap_16(vendor); + device = bswap_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; +} +#else +static int pci_get_vendor( + unsigned char bus, + unsigned char dev, + int func) +{ + int retval; + pciconfig_read(bus, dev<<3, PCI_ID_REG, 4, &retval); + return retval; +} +#endif +#ifdef linux +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 = bswap_32(retval); + } else { + retval = 0; + } + if (fd > 0) { + close(fd); + } + return retval; +} + +static long pci_config_read_word( + 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, 2, cmd) == 2) { + retval = bswap_16(retval); + } else { + retval = 0; + } + if (fd > 0) { + close(fd); + } + return retval; +} + +static long pci_config_read_byte( + 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, 1, cmd) != 1) { + retval = 0; + } + if (fd > 0) { + close(fd); + } + return retval; +} + +static void pci_config_write_long( + unsigned char bus, + unsigned char dev, + int func, + unsigned cmd, + long val) +{ + char path[100]; + int fd; + val = bswap_32(val); + sprintf(path,"/proc/bus/pci/%02d/%02x.0", bus, dev); + fd = open(path,O_RDONLY|O_SYNC); + if (fd > 0) { + pwrite(fd, &val, 4, cmd); + close(fd); + } +} + +static void pci_config_write_word( + unsigned char bus, + unsigned char dev, + int func, + unsigned cmd, + long val) +{ + char path[100]; + int fd; + val = bswap_16(val); + sprintf(path,"/proc/bus/pci/%02d/%02x.0", bus, dev); + fd = open(path,O_RDONLY|O_SYNC); + if (fd > 0) { + pwrite(fd, &val, 2, cmd); + close(fd); + } +} + +static void pci_config_write_byte( + unsigned char bus, + unsigned char dev, + int func, + unsigned cmd, + long val) +{ + char path[100]; + int fd; + sprintf(path,"/proc/bus/pci/%02d/%02x.0", bus, dev); + fd = open(path,O_RDONLY|O_SYNC); + if (fd > 0) { + pwrite(fd, &val, 1, cmd); + close(fd); + } +} +#else +static long pci_config_read_long( + unsigned char bus, + unsigned char dev, + int func, + unsigned cmd) +{ + long retval; + pciconfig_read(bus, dev<<3, cmd, 4, &retval); + return retval; +} + +static long pci_config_read_word( + unsigned char bus, + unsigned char dev, + int func, + unsigned cmd) +{ + long retval; + pciconfig_read(bus, dev<<3, cmd, 2, &retval); + return retval; +} + +static long pci_config_read_byte( + unsigned char bus, + unsigned char dev, + int func, + unsigned cmd) +{ + long retval; + pciconfig_read(bus, dev<<3, cmd, 1, &retval); + return retval; +} + +static void pci_config_write_long( + unsigned char bus, + unsigned char dev, + int func, + unsigned cmd, + long val) +{ + long retval; + pciconfig_write(bus, dev<<3, cmd, 4, val); + return retval; +} + +static void pci_config_write_word( + unsigned char bus, + unsigned char dev, + int func, + unsigned cmd, + long val) +{ + long retval; + pciconfig_write(bus, dev<<3, cmd, 2, val); + return retval; +} + +static void pci_config_write_byte( + unsigned char bus, + unsigned char dev, + int func, + unsigned cmd, + long val) +{ + long retval; + pciconfig_write(bus, dev<<3, cmd, 1, val); + return retval; +} +#endif |