diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/xfree86/os-support/bus/linuxPci.c')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/xfree86/os-support/bus/linuxPci.c | 894 |
1 files changed, 0 insertions, 894 deletions
diff --git a/nx-X11/programs/Xserver/hw/xfree86/os-support/bus/linuxPci.c b/nx-X11/programs/Xserver/hw/xfree86/os-support/bus/linuxPci.c deleted file mode 100644 index 40fb4604b..000000000 --- a/nx-X11/programs/Xserver/hw/xfree86/os-support/bus/linuxPci.c +++ /dev/null @@ -1,894 +0,0 @@ -/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bus/linuxPci.c,v 1.9 2002/09/24 16:14:16 tsi Exp $ */ -/* - * Copyright 1998 by Concurrent Computer Corporation - * - * 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 name of Concurrent Computer - * Corporation not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Concurrent Computer Corporation makes no representations - * about the suitability of this software for any purpose. It is - * provided "as is" without express or implied warranty. - * - * CONCURRENT COMPUTER CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD - * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS, IN NO EVENT SHALL CONCURRENT COMPUTER CORPORATION 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. - * - * Copyright 1998 by Metro Link Incorporated - * - * 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 name of Metro Link - * Incorporated not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Metro Link Incorporated makes no representations - * about the suitability of this software for any purpose. It is - * provided "as is" without express or implied warranty. - * - * METRO LINK INCORPORATED DISCLAIMS ALL WARRANTIES WITH REGARD - * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS, IN NO EVENT SHALL METRO LINK INCORPORATED 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. - */ - -#ifdef HAVE_XORG_CONFIG_H -#include <xorg-config.h> -#endif - -#include <stdio.h> -#include "compiler.h" -#include "xf86.h" -#include "xf86Priv.h" -#include "xf86_OSlib.h" -#include "Pci.h" - -/* - * linux platform specific PCI access functions -- using /proc/bus/pci - * needs kernel version 2.2.x - */ -static CARD32 linuxPciCfgRead(PCITAG tag, int off); -static void linuxPciCfgWrite(PCITAG, int off, CARD32 val); -static void linuxPciCfgSetBits(PCITAG tag, int off, CARD32 mask, CARD32 bits); -static ADDRESS linuxTransAddrBusToHost(PCITAG tag, PciAddrType type, ADDRESS addr); -#if defined(__powerpc__) -static ADDRESS linuxPpcBusAddrToHostAddr(PCITAG, PciAddrType, ADDRESS); -static ADDRESS linuxPpcHostAddrToBusAddr(PCITAG, PciAddrType, ADDRESS); -#endif - -static CARD8 linuxPciCfgReadByte(PCITAG tag, int off); -static void linuxPciCfgWriteByte(PCITAG tag, int off, CARD8 val); -static CARD16 linuxPciCfgReadWord(PCITAG tag, int off); -static void linuxPciCfgWriteWord(PCITAG tag, int off, CARD16 val); - -static pciBusFuncs_t linuxFuncs0 = { -/* pciReadLong */ linuxPciCfgRead, -/* pciWriteLong */ linuxPciCfgWrite, -/* pciSetBitsLong */ linuxPciCfgSetBits, -#if defined(__powerpc__) -/* pciAddrHostToBus */ linuxPpcHostAddrToBusAddr, -/* pciAddrBusToHost */ linuxPpcBusAddrToHostAddr, -#else -/* pciAddrHostToBus */ pciAddrNOOP, -/* pciAddrBusToHost */ linuxTransAddrBusToHost, -#endif - -/* pciControlBridge */ NULL, -/* pciGetBridgeBuses */ NULL, -/* pciGetBridgeResources */ NULL, - -/* pciReadByte */ linuxPciCfgReadByte, -/* pciWriteByte */ linuxPciCfgWriteByte, - -/* pciReadWord */ linuxPciCfgReadWord, -/* pciWriteWord */ linuxPciCfgWriteWord, -}; - -static pciBusInfo_t linuxPci0 = { -/* configMech */ PCI_CFG_MECH_OTHER, -/* numDevices */ 32, -/* secondary */ FALSE, -/* primary_bus */ 0, -#ifdef PowerMAX_OS -/* ppc_io_base */ 0, -/* ppc_io_size */ 0, -#endif -/* funcs */ &linuxFuncs0, -/* pciBusPriv */ NULL, -/* bridge */ NULL -}; - -void -linuxPciInit() -{ - struct stat st; - if ((xf86Info.pciFlags == PCIForceNone) || - (-1 == stat("/proc/bus/pci", &st))) { - /* when using this as default for all linux architectures, - we'll need a fallback for 2.0 kernels here */ - return; - } - pciNumBuses = 1; - pciBusInfo[0] = &linuxPci0; - pciFindFirstFP = pciGenFindFirst; - pciFindNextFP = pciGenFindNext; -} - -static int -linuxPciOpenFile(PCITAG tag, Bool write) -{ - static int lbus,ldev,lfunc,fd = -1,is_write = 0; - int bus, dev, func; - char file[32]; - struct stat ignored; - - bus = PCI_BUS_FROM_TAG(tag); - dev = PCI_DEV_FROM_TAG(tag); - func = PCI_FUNC_FROM_TAG(tag); - if (fd == -1 || (write && (!is_write)) - || bus != lbus || dev != ldev || func != lfunc) { - if (fd != -1) - close(fd); - if (bus < 256) { - sprintf(file,"/proc/bus/pci/%02x",bus); - if (stat(file, &ignored) < 0) - sprintf(file, "/proc/bus/pci/0000:%02x/%02x.%1x", - bus, dev, func); - else - sprintf(file, "/proc/bus/pci/%02x/%02x.%1x", - bus, dev, func); - } else { - sprintf(file,"/proc/bus/pci/%04x",bus); - if (stat(file, &ignored) < 0) - sprintf(file, "/proc/bus/pci/0000:%04x/%02x.%1x", - bus, dev, func); - else - sprintf(file, "/proc/bus/pci/%04x/%02x.%1x", - bus, dev, func); - } - if (write) { - fd = open(file,O_RDWR); - if (fd != -1) is_write = TRUE; - } else switch (is_write) { - case TRUE: - fd = open(file,O_RDWR); - if (fd > -1) - break; - default: - fd = open(file,O_RDONLY); - is_write = FALSE; - } - - lbus = bus; - ldev = dev; - lfunc = func; - } - return fd; -} - -static CARD32 -linuxPciCfgRead(PCITAG tag, int off) -{ - int fd; - CARD32 val = 0xffffffff; - - if (-1 != (fd = linuxPciOpenFile(tag,FALSE))) { - lseek(fd,off,SEEK_SET); - read(fd,&val,4); - } - return PCI_CPU(val); -} - -static void -linuxPciCfgWrite(PCITAG tag, int off, CARD32 val) -{ - int fd; - - if (-1 != (fd = linuxPciOpenFile(tag,TRUE))) { - lseek(fd,off,SEEK_SET); - val = PCI_CPU(val); - write(fd,&val,4); - } -} - -static void -linuxPciCfgSetBits(PCITAG tag, int off, CARD32 mask, CARD32 bits) -{ - int fd; - CARD32 val = 0xffffffff; - - if (-1 != (fd = linuxPciOpenFile(tag,TRUE))) { - lseek(fd,off,SEEK_SET); - read(fd,&val,4); - val = PCI_CPU(val); - val = (val & ~mask) | (bits & mask); - val = PCI_CPU(val); - lseek(fd,off,SEEK_SET); - write(fd,&val,4); - } -} - -/* - * This function will convert a BAR address into a host address - * suitable for passing into the mmap function of a /proc/bus - * device. - */ -ADDRESS linuxTransAddrBusToHost(PCITAG tag, PciAddrType type, ADDRESS addr) -{ - ADDRESS ret = xf86GetOSOffsetFromPCI(tag, PCI_MEM|PCI_IO, addr); - - if (ret) - return ret; - - /* - * if it is not a BAR address, it must be legacy, (or wrong) - * return it as is.. - */ - return addr; -} - - -#if defined(__powerpc__) - -#ifndef __NR_pciconfig_iobase -#define __NR_pciconfig_iobase 200 -#endif - -static ADDRESS -linuxPpcBusAddrToHostAddr(PCITAG tag, PciAddrType type, ADDRESS addr) -{ - if (type == PCI_MEM) - { - ADDRESS membase = syscall(__NR_pciconfig_iobase, 1, - PCI_BUS_FROM_TAG(tag), PCI_DFN_FROM_TAG(tag)); - return (addr + membase); - } - else if (type == PCI_IO) - { - ADDRESS iobase = syscall(__NR_pciconfig_iobase, 2, - PCI_BUS_FROM_TAG(tag), PCI_DFN_FROM_TAG(tag)); - return (addr + iobase); - } - else return addr; -} - -static ADDRESS -linuxPpcHostAddrToBusAddr(PCITAG tag, PciAddrType type, ADDRESS addr) -{ - if (type == PCI_MEM) - { - ADDRESS membase = syscall(__NR_pciconfig_iobase, 1, - PCI_BUS_FROM_TAG(tag), PCI_DFN_FROM_TAG(tag)); - return (addr - membase); - } - else if (type == PCI_IO) - { - ADDRESS iobase = syscall(__NR_pciconfig_iobase, 2, - PCI_BUS_FROM_TAG(tag), PCI_DFN_FROM_TAG(tag)); - return (addr - iobase); - } - else return addr; -} - -#endif /* __powerpc__ */ - -static CARD8 -linuxPciCfgReadByte(PCITAG tag, int off) -{ - int fd; - CARD8 val = 0xff; - - if (-1 != (fd = linuxPciOpenFile(tag,FALSE))) { - lseek(fd,off,SEEK_SET); - read(fd,&val,1); - } - - return val; -} - -static void -linuxPciCfgWriteByte(PCITAG tag, int off, CARD8 val) -{ - int fd; - - if (-1 != (fd = linuxPciOpenFile(tag,TRUE))) { - lseek(fd,off,SEEK_SET); - write(fd, &val, 1); - } -} - -static CARD16 -linuxPciCfgReadWord(PCITAG tag, int off) -{ - int fd; - CARD16 val = 0xff; - - if (-1 != (fd = linuxPciOpenFile(tag,FALSE))) { - lseek(fd, off, SEEK_SET); - read(fd, &val, 2); - } - - return PCI_CPU16(val); -} - -static void -linuxPciCfgWriteWord(PCITAG tag, int off, CARD16 val) -{ - int fd; - - if (-1 != (fd = linuxPciOpenFile(tag,TRUE))) { - lseek(fd, off, SEEK_SET); - val = PCI_CPU16(val); - write(fd, &val, 2); - } -} - -#ifndef INCLUDE_XF86_NO_DOMAIN - -/* - * Compiling the following simply requires the presence of <linux/pci.c>. - * Actually running this is another matter altogether... - * - * This scheme requires that the kernel allow mmap()'ing of a host bridge's I/O - * and memory spaces through its /proc/bus/pci/BUS/DFN entry. Which one is - * determined by a prior ioctl(). - * - * For the sparc64 port, this means 2.4.12 or later. For ppc, this - * functionality is almost, but not quite there yet. Alpha and other kernel - * ports to multi-domain architectures still need to implement this. - * - * This scheme is also predicated on the use of an IOADDRESS compatible type to - * designate I/O addresses. Although IOADDRESS is defined as an unsigned - * integral type, it is actually the virtual address of, i.e. a pointer to, the - * I/O port to access. And so, the inX/outX macros in "compiler.h" need to be - * #define'd appropriately (as is done on SPARC's). - * - * Another requirement to port this scheme to another multi-domain architecture - * is to add the appropriate entries in the pciControllerSizes array below. - * - * TO DO: Address the deleterious reaction some host bridges have to master - * aborts. This is already done for secondary PCI buses, but not yet - * for accesses to primary buses (except for the SPARC port, where - * master aborts are avoided during PCI scans). - */ - -#include <linux/pci.h> - -#ifndef PCIIOC_BASE /* Ioctls for /proc/bus/pci/X/Y nodes. */ -#define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) - -/* Get controller for PCI device. */ -#define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) -/* Set mmap state to I/O space. */ -#define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) -/* Set mmap state to MEM space. */ -#define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) -/* Enable/disable write-combining. */ -#define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) - -#endif - -/* This probably shouldn't be Linux-specific */ -static pciConfigPtr -xf86GetPciHostConfigFromTag(PCITAG Tag) -{ - int bus = PCI_BUS_FROM_TAG(Tag); - pciBusInfo_t *pBusInfo; - - while ((bus < pciNumBuses) && (pBusInfo = pciBusInfo[bus])) { - if (bus == pBusInfo->primary_bus) - return pBusInfo->bridge; - bus = pBusInfo->primary_bus; - } - - return NULL; /* Bad data */ -} - -/* - * This is ugly, but until I can extract this information from the kernel, - * it'll have to do. The default I/O space size is 64K, and 4G for memory. - * Anything else needs to go in this table. (PowerPC folk take note.) - * - * Note that Linux/SPARC userland is 32-bit, so 4G overflows to zero here. - * - * Please keep this table in ascending vendor/device order. - */ -static struct pciSizes { - unsigned short vendor, device; - unsigned long io_size, mem_size; -} pciControllerSizes[] = { - { - PCI_VENDOR_SUN, PCI_CHIP_PSYCHO, - 1U << 16, 1U << 31 - }, - { - PCI_VENDOR_SUN, PCI_CHIP_SCHIZO, - 1U << 24, 1U << 31 /* ??? */ - }, - { - PCI_VENDOR_SUN, PCI_CHIP_SABRE, - 1U << 24, (unsigned long)(1ULL << 32) - }, - { - PCI_VENDOR_SUN, PCI_CHIP_HUMMINGBIRD, - 1U << 24, (unsigned long)(1ULL << 32) - } -}; -#define NUM_SIZES (sizeof(pciControllerSizes) / sizeof(pciControllerSizes[0])) - -static unsigned long -linuxGetIOSize(PCITAG Tag) -{ - pciConfigPtr pPCI; - int i; - - /* Find host bridge */ - if ((pPCI = xf86GetPciHostConfigFromTag(Tag))) { - /* Look up vendor/device */ - for (i = 0; i < NUM_SIZES; i++) { - if (pPCI->pci_vendor > pciControllerSizes[i].vendor) - continue; - if (pPCI->pci_vendor < pciControllerSizes[i].vendor) - break; - if (pPCI->pci_device > pciControllerSizes[i].device) - continue; - if (pPCI->pci_device < pciControllerSizes[i].device) - break; - return pciControllerSizes[i].io_size; - } - } - - return 1U << 16; /* Default to 64K */ -} - -static void -linuxGetSizes(PCITAG Tag, unsigned long *io_size, unsigned long *mem_size) -{ - pciConfigPtr pPCI; - int i; - - *io_size = (1U << 16); /* Default to 64K */ - *mem_size = (unsigned long)(1ULL << 32); /* Default to 4G */ - - /* Find host bridge */ - if ((pPCI = xf86GetPciHostConfigFromTag(Tag))) { - /* Look up vendor/device */ - for (i = 0; i < NUM_SIZES; i++) { - if (pPCI->pci_vendor > pciControllerSizes[i].vendor) - continue; - if (pPCI->pci_vendor < pciControllerSizes[i].vendor) - break; - if (pPCI->pci_device > pciControllerSizes[i].device) - continue; - if (pPCI->pci_device < pciControllerSizes[i].device) - break; - *io_size = pciControllerSizes[i].io_size; - *mem_size = pciControllerSizes[i].mem_size; - break; - } - } -} - -int -xf86GetPciDomain(PCITAG Tag) -{ - pciConfigPtr pPCI; - int fd, result; - - pPCI = xf86GetPciHostConfigFromTag(Tag); - - if (pPCI && (result = PCI_DOM_FROM_BUS(pPCI->busnum))) - return result; - - if (!pPCI || pPCI->fakeDevice) - return 1; /* Domain 0 is reserved */ - - if ((fd = linuxPciOpenFile(pPCI ? pPCI->tag : 0,FALSE)) < 0) - return 0; - - if ((result = ioctl(fd, PCIIOC_CONTROLLER, 0)) < 0) - return 0; - - return result + 1; /* Domain 0 is reserved */ -} - -static pointer -linuxMapPci(int ScreenNum, int Flags, PCITAG Tag, - ADDRESS Base, unsigned long Size, int mmap_ioctl) -{ - do { - pciConfigPtr pPCI; - unsigned char *result; - ADDRESS realBase, Offset; - int fd, mmapflags, prot; - - xf86InitVidMem(); - - pPCI = xf86GetPciHostConfigFromTag(Tag); - - if (((fd = linuxPciOpenFile(pPCI ? pPCI->tag : 0,FALSE)) < 0) || - (ioctl(fd, mmap_ioctl, 0) < 0)) - break; - -/* Note: IA-64 doesn't compile this and doesn't need to */ -#ifdef __ia64__ - -# ifndef MAP_WRITECOMBINED -# define MAP_WRITECOMBINED 0x00010000 -# endif -# ifndef MAP_NONCACHED -# define MAP_NONCACHED 0x00020000 -# endif - - if (Flags & VIDMEM_FRAMEBUFFER) - mmapflags = MAP_SHARED | MAP_WRITECOMBINED; - else - mmapflags = MAP_SHARED | MAP_NONCACHED; - -#else /* !__ia64__ */ - - mmapflags = (Flags & VIDMEM_FRAMEBUFFER) / VIDMEM_FRAMEBUFFER; - - if (ioctl(fd, PCIIOC_WRITE_COMBINE, mmapflags) < 0) - break; - - mmapflags = MAP_SHARED; - -#endif /* ?__ia64__ */ - - /* Align to page boundary */ - realBase = Base & ~(getpagesize() - 1); - Offset = Base - realBase; - - if (Flags & VIDMEM_READONLY) - prot = PROT_READ; - else - prot = PROT_READ | PROT_WRITE; - - result = mmap(NULL, Size + Offset, prot, mmapflags, fd, realBase); - - if (!result || ((pointer)result == MAP_FAILED)) - return NULL; - - xf86MakeNewMapping(ScreenNum, Flags, realBase, Size + Offset, result); - - return result + Offset; - } while (0); - - if (mmap_ioctl == PCIIOC_MMAP_IS_MEM) - return xf86MapVidMem(ScreenNum, Flags, Base, Size); - - return NULL; -} - -#define MAX_DOMAINS 257 -static pointer DomainMmappedIO[MAX_DOMAINS]; -static pointer DomainMmappedMem[MAX_DOMAINS]; - -static int -linuxOpenLegacy(PCITAG Tag, char *name) -{ -#define PREFIX "/sys/class/pci_bus/%04x:%02x/%s" - char *path; - int domain, bus; - pciBusInfo_t *pBusInfo; - pciConfigPtr bridge = NULL; - int fd; - - path = xalloc(strlen(PREFIX) + strlen(name)); - if (!path) - return -1; - - for (;;) { - domain = xf86GetPciDomain(Tag); - bus = PCI_BUS_NO_DOMAIN(PCI_BUS_FROM_TAG(Tag)); - - /* Domain 0 is reserved -- see xf86GetPciDomain() */ - if ((domain <= 0) || (domain >= MAX_DOMAINS)) - FatalError("linuxOpenLegacy(): domain out of range\n"); - - sprintf(path, PREFIX, domain - 1, bus, name); - fd = open(path, O_RDWR); - if (fd >= 0) { - xfree(path); - return fd; - } - - pBusInfo = pciBusInfo[bus]; - if (!pBusInfo || (bridge == pBusInfo->bridge) || - !(bridge = pBusInfo->bridge)) { - xfree(path); - return -1; - } - - Tag = bridge->tag; - } - - xfree(path); - return fd; -} - -/* - * xf86MapDomainMemory - memory map PCI domain memory - * - * This routine maps the memory region in the domain specified by Tag and - * returns a pointer to it. The pointer is saved for future use if it's in - * the legacy ISA memory space (memory in a domain between 0 and 1MB). - */ -pointer -xf86MapDomainMemory(int ScreenNum, int Flags, PCITAG Tag, - ADDRESS Base, unsigned long Size) -{ - int domain = xf86GetPciDomain(Tag); - int fd; - - /* - * We use /proc/bus/pci on non-legacy addresses or if the Linux sysfs - * legacy_mem interface is unavailable. - */ - if (Base > 1024*1024) - return linuxMapPci(ScreenNum, Flags, Tag, Base, Size, - PCIIOC_MMAP_IS_MEM); - - if ((fd = linuxOpenLegacy(Tag, "legacy_mem")) < 0) - return linuxMapPci(ScreenNum, Flags, Tag, Base, Size, - PCIIOC_MMAP_IS_MEM); - - - /* If we haven't already mapped this legacy space, try to. */ - if (!DomainMmappedMem[domain]) { - DomainMmappedMem[domain] = mmap(NULL, 1024*1024, PROT_READ|PROT_WRITE, - MAP_SHARED, fd, 0); - if (DomainMmappedMem[domain] == MAP_FAILED) { - close(fd); - perror("mmap failure"); - FatalError("xf86MapDomainMem(): mmap() failure\n"); - } - } - - close(fd); - return (pointer)((char *)DomainMmappedMem[domain] + Base); -} - -/* - * xf86MapDomainIO - map I/O space in this domain - * - * Each domain has a legacy ISA I/O space. This routine will try to - * map it using the Linux sysfs legacy_io interface. If that fails, - * it'll fall back to using /proc/bus/pci. - * - * If the legacy_io interface *does* exist, the file descriptor (fd below) - * will be saved in the DomainMmappedIO array in the upper bits of the - * pointer. Callers will do I/O with small port numbers (<64k values), so - * the platform I/O code can extract the port number and the fd, lseek to - * the port number in the legacy_io file, and issue the read or write. - * - * This has no means of returning failure, so all errors are fatal - */ -IOADDRESS -xf86MapDomainIO(int ScreenNum, int Flags, PCITAG Tag, - IOADDRESS Base, unsigned long Size) -{ - int domain = xf86GetPciDomain(Tag); - int fd; - - if ((domain <= 0) || (domain >= MAX_DOMAINS)) - FatalError("xf86MapDomainIO(): domain out of range\n"); - - if (DomainMmappedIO[domain]) - return (IOADDRESS)DomainMmappedIO[domain] + Base; - - /* Permanently map all of I/O space */ - if ((fd = linuxOpenLegacy(Tag, "legacy_io")) < 0) { - DomainMmappedIO[domain] = linuxMapPci(ScreenNum, Flags, Tag, - 0, linuxGetIOSize(Tag), - PCIIOC_MMAP_IS_IO); - /* ia64 can't mmap legacy IO port space */ - if (!DomainMmappedIO[domain]) - return Base; - } - else { /* legacy_io file exists, encode fd */ - DomainMmappedIO[domain] = (pointer)(fd << 24); - } - - return (IOADDRESS)DomainMmappedIO[domain] + Base; -} - -/* - * xf86ReadDomainMemory - copy from domain memory into a caller supplied buffer - */ -int -xf86ReadDomainMemory(PCITAG Tag, ADDRESS Base, int Len, unsigned char *Buf) -{ - unsigned char *ptr, *src; - ADDRESS offset; - unsigned long size; - int len, pagemask = getpagesize() - 1; - - unsigned int i, dom, bus, dev, func; - unsigned int fd; - char file[256]; - struct stat st; - - dom = PCI_DOM_FROM_TAG(Tag); - bus = PCI_BUS_FROM_TAG(Tag); - dev = PCI_DEV_FROM_TAG(Tag); - func = PCI_FUNC_FROM_TAG(Tag); - sprintf(file, "/sys/devices/pci%04x:%02x/%04x:%02x:%02x.%1x/rom", - dom, bus, dom, bus, dev, func); - - /* - * If the caller wants the ROM and the sysfs rom interface exists, - * try to use it instead of reading it from /proc/bus/pci. - */ - if (((Base & 0xfffff) == 0xC0000) && (stat(file, &st) == 0)) { - if ((fd = open(file, O_RDWR))) - Base = 0x0; - - /* enable the ROM first */ - write(fd, "1", 2); - lseek(fd, 0, SEEK_SET); - - /* copy the ROM until we hit Len, EOF or read error */ - for (i = 0; i < Len && read(fd, Buf, 1) > 0; Buf++, i++) - ; - - write(fd, "0", 2); - close(fd); - - return Len; - } - - /* Ensure page boundaries */ - offset = Base & ~pagemask; - size = ((Base + Len + pagemask) & ~pagemask) - offset; - - ptr = xf86MapDomainMemory(-1, VIDMEM_READONLY, Tag, offset, size); - - if (!ptr) - return -1; - - /* Using memcpy() here can hang the system */ - src = ptr + (Base - offset); - for (len = Len; len-- > 0;) - *Buf++ = *src++; - - xf86UnMapVidMem(-1, ptr, size); - - return Len; -} - -resPtr -xf86BusAccWindowsFromOS(void) -{ - pciConfigPtr *ppPCI, pPCI; - resPtr pRes = NULL; - resRange range; - unsigned long io_size, mem_size; - int domain; - - if ((ppPCI = xf86scanpci(0))) { - for (; (pPCI = *ppPCI); ppPCI++) { - if ((pPCI->pci_base_class != PCI_CLASS_BRIDGE) || - (pPCI->pci_sub_class != PCI_SUBCLASS_BRIDGE_HOST)) - continue; - - domain = xf86GetPciDomain(pPCI->tag); - linuxGetSizes(pPCI->tag, &io_size, &mem_size); - - RANGE(range, 0, (ADDRESS)(mem_size - 1), - RANGE_TYPE(ResExcMemBlock, domain)); - pRes = xf86AddResToList(pRes, &range, -1); - - RANGE(range, 0, (IOADDRESS)(io_size - 1), - RANGE_TYPE(ResExcIoBlock, domain)); - pRes = xf86AddResToList(pRes, &range, -1); - - if (domain <= 0) - break; - } - } - - return pRes; -} - -resPtr -xf86PciBusAccWindowsFromOS(void) -{ - pciConfigPtr *ppPCI, pPCI; - resPtr pRes = NULL; - resRange range; - unsigned long io_size, mem_size; - int domain; - - if ((ppPCI = xf86scanpci(0))) { - for (; (pPCI = *ppPCI); ppPCI++) { - if ((pPCI->pci_base_class != PCI_CLASS_BRIDGE) || - (pPCI->pci_sub_class != PCI_SUBCLASS_BRIDGE_HOST)) - continue; - - domain = xf86GetPciDomain(pPCI->tag); - linuxGetSizes(pPCI->tag, &io_size, &mem_size); - - RANGE(range, 0, (ADDRESS)(mem_size - 1), - RANGE_TYPE(ResExcMemBlock, domain)); - pRes = xf86AddResToList(pRes, &range, -1); - - RANGE(range, 0, (IOADDRESS)(io_size - 1), - RANGE_TYPE(ResExcIoBlock, domain)); - pRes = xf86AddResToList(pRes, &range, -1); - - if (domain <= 0) - break; - } - } - - return pRes; -} - - -resPtr -xf86AccResFromOS(resPtr pRes) -{ - pciConfigPtr *ppPCI, pPCI; - resRange range; - unsigned long io_size, mem_size; - int domain; - - if ((ppPCI = xf86scanpci(0))) { - for (; (pPCI = *ppPCI); ppPCI++) { - if ((pPCI->pci_base_class != PCI_CLASS_BRIDGE) || - (pPCI->pci_sub_class != PCI_SUBCLASS_BRIDGE_HOST)) - continue; - - domain = xf86GetPciDomain(pPCI->tag); - linuxGetSizes(pPCI->tag, &io_size, &mem_size); - - /* - * At minimum, the top and bottom resources must be claimed, so - * that resources that are (or appear to be) unallocated can be - * relocated. - */ - RANGE(range, 0x00000000u, 0x0009ffffu, - RANGE_TYPE(ResExcMemBlock, domain)); - pRes = xf86AddResToList(pRes, &range, -1); - RANGE(range, 0x000c0000u, 0x000effffu, - RANGE_TYPE(ResExcMemBlock, domain)); - pRes = xf86AddResToList(pRes, &range, -1); - RANGE(range, 0x000f0000u, 0x000fffffu, - RANGE_TYPE(ResExcMemBlock, domain)); - pRes = xf86AddResToList(pRes, &range, -1); - - RANGE(range, (ADDRESS)(mem_size - 1), (ADDRESS)(mem_size - 1), - RANGE_TYPE(ResExcMemBlock, domain)); - pRes = xf86AddResToList(pRes, &range, -1); - - RANGE(range, 0x00000000u, 0x00000000u, - RANGE_TYPE(ResExcIoBlock, domain)); - pRes = xf86AddResToList(pRes, &range, -1); - RANGE(range, (IOADDRESS)(io_size - 1), (IOADDRESS)(io_size - 1), - RANGE_TYPE(ResExcIoBlock, domain)); - pRes = xf86AddResToList(pRes, &range, -1); - - if (domain <= 0) - break; - } - } - - return pRes; -} - -#endif /* !INCLUDE_XF86_NO_DOMAIN */ |