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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.c894
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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 */