xserver git update 15/5/2010

3 files changed, 1796 insertions, 1796 deletions

diff --git a/xorg-server/hw/xfree86/os-support/linux/int10/linux.c b/xorg-server/hw/xfree86/os-support/linux/int10/linux.c
index 0cf3507c3..e3c8a984d 100644
--- a/xorg-server/hw/xfree86/os-support/linux/int10/linux.c
+++ b/xorg-server/hw/xfree86/os-support/linux/int10/linux.c
@@ -1,544 +1,544 @@
-/*
- * linux specific part of the int10 module
- * Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2008 Egbert Eich
- */
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
-
-#include "xf86.h"
-#include "xf86_OSproc.h"
-#include "xf86Pci.h"
-#include "compiler.h"
-#define _INT10_PRIVATE
-#include "xf86int10.h"
-#ifdef __sparc__
-#define DEV_MEM "/dev/fb"
-#else
-#define DEV_MEM "/dev/mem"
-#endif
-#define ALLOC_ENTRIES(x) ((V_RAM / x) - 1)
-#define SHMERRORPTR (pointer)(-1)
-
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/mman.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#include <unistd.h>
-#include <string.h>
-
-static int counter = 0;
-static unsigned long int10Generation = 0;
-
-static CARD8 read_b(xf86Int10InfoPtr pInt, int addr);
-static CARD16 read_w(xf86Int10InfoPtr pInt, int addr);
-static CARD32 read_l(xf86Int10InfoPtr pInt, int addr);
-static void write_b(xf86Int10InfoPtr pInt, int addr, CARD8 val);
-static void write_w(xf86Int10InfoPtr pInt, int addr, CARD16 val);
-static void write_l(xf86Int10InfoPtr pInt, int addr, CARD32 val);
-
-int10MemRec linuxMem = {
-    read_b,
-    read_w,
-    read_l,
-    write_b,
-    write_w,
-    write_l
-};
-
-typedef struct {
-    int lowMem;
-    int highMem;
-    char* base;
-    char* base_high;
-    int screen;
-    char* alloc;
-} linuxInt10Priv;
-
-#if defined DoSubModules
-
-typedef enum {
-    INT10_NOT_LOADED,
-    INT10_LOADED_VM86,
-    INT10_LOADED_X86EMU,
-    INT10_LOAD_FAILED
-} Int10LinuxSubModuleState;
-
-static Int10LinuxSubModuleState loadedSubModule = INT10_NOT_LOADED;
-
-static Int10LinuxSubModuleState int10LinuxLoadSubModule(ScrnInfoPtr pScrn);
-
-#endif /* DoSubModules */
-
-xf86Int10InfoPtr
-xf86ExtendedInitInt10(int entityIndex, int Flags)
-{
-    xf86Int10InfoPtr pInt = NULL;
-    int screen;
-    int fd;
-    static void* vidMem = NULL;
-    static void* sysMem = NULL;
-    void* vMem = NULL;
-    void *options = NULL;
-    int low_mem;
-    int high_mem = -1;
-    char *base = SHMERRORPTR;
-    char *base_high = SHMERRORPTR;
-    int pagesize; 
-    memType cs;
-    legacyVGARec vga;
-    Bool videoBiosMapped = FALSE;
-    
-    if (int10Generation != serverGeneration) {
-	counter = 0;
-	int10Generation = serverGeneration;
-    }
-
-    screen = (xf86FindScreenForEntity(entityIndex))->scrnIndex;
-
-    options = xf86HandleInt10Options(xf86Screens[screen],entityIndex);
-
-    if (int10skip(options)) {
-	xfree(options);
-	return NULL;
-    }
-
-#if defined DoSubModules
-    if (loadedSubModule == INT10_NOT_LOADED) 
-	loadedSubModule = int10LinuxLoadSubModule(xf86Screens[screen]);
-
-    if (loadedSubModule == INT10_LOAD_FAILED)
-	return NULL;
-#endif
-
-    if ((!vidMem) || (!sysMem)) {
-	if ((fd = open(DEV_MEM, O_RDWR, 0)) >= 0) {
-	    if (!sysMem) {
-		DebugF("Mapping sys bios area\n");
-		if ((sysMem = mmap((void *)(SYS_BIOS), BIOS_SIZE,
-				   PROT_READ | PROT_EXEC,
-				   MAP_SHARED | MAP_FIXED, fd, SYS_BIOS))
-		    == MAP_FAILED) {
-		    xf86DrvMsg(screen, X_ERROR, "Cannot map SYS BIOS\n");
-		    close(fd);
-		    goto error0;
-		}
-	    }
-	    if (!vidMem) {
-		DebugF("Mapping VRAM area\n");
-		if ((vidMem = mmap((void *)(V_RAM), VRAM_SIZE,
-				   PROT_READ | PROT_WRITE | PROT_EXEC,
-				   MAP_SHARED | MAP_FIXED, fd, V_RAM))
-		    == MAP_FAILED) {
-		    xf86DrvMsg(screen, X_ERROR, "Cannot map V_RAM\n");
-		    close(fd);
-		    goto error0;
-		}
-	    }
-	    close(fd);
-	} else {
-	    xf86DrvMsg(screen, X_ERROR, "Cannot open %s\n", DEV_MEM);
-	    goto error0;
-	}
-    }
-
-    pInt = (xf86Int10InfoPtr)xnfcalloc(1, sizeof(xf86Int10InfoRec));
-    pInt->scrnIndex = screen;
-    pInt->entityIndex = entityIndex;
-    pInt->dev = xf86GetPciInfoForEntity(entityIndex);
-
-    if (!xf86Int10ExecSetup(pInt))
-	goto error0;
-    pInt->mem = &linuxMem;
-    pagesize = getpagesize();
-    pInt->private = (pointer)xnfcalloc(1, sizeof(linuxInt10Priv));
-    ((linuxInt10Priv*)pInt->private)->screen = screen;
-    ((linuxInt10Priv*)pInt->private)->alloc =
-	(pointer)xnfcalloc(1, ALLOC_ENTRIES(pagesize));
-
-    if (!xf86IsEntityPrimary(entityIndex)) {
-	DebugF("Mapping high memory area\n");
-	if ((high_mem = shmget(counter++, HIGH_MEM_SIZE,
-			       IPC_CREAT | SHM_R | SHM_W)) == -1) {
-	    if (errno == ENOSYS)
-		xf86DrvMsg(screen, X_ERROR, "shmget error\n Please reconfigure"
-			   " your kernel to include System V IPC support\n");
-	    else
-		xf86DrvMsg(screen, X_ERROR,
-			   "shmget(highmem) error: %s\n",strerror(errno));
-	    goto error1;
-	}
-    } else {
-	DebugF("Mapping Video BIOS\n");
-	videoBiosMapped = TRUE;
-	if ((fd = open(DEV_MEM, O_RDWR, 0)) >= 0) {
-	    if ((vMem = mmap((void *)(V_BIOS), SYS_BIOS - V_BIOS,
-			     PROT_READ | PROT_WRITE | PROT_EXEC,
-			     MAP_SHARED | MAP_FIXED, fd, V_BIOS))
-		== MAP_FAILED) {
-		xf86DrvMsg(screen, X_ERROR, "Cannot map V_BIOS\n");
-		close(fd);
-		goto error1;
-	    }
-	    close (fd);
-	} else
-	    goto error1;
-    }
-    ((linuxInt10Priv*)pInt->private)->highMem = high_mem;
-    
-    DebugF("Mapping 640kB area\n");
-    if ((low_mem = shmget(counter++, V_RAM,
-			  IPC_CREAT | SHM_R | SHM_W)) == -1) {
-	xf86DrvMsg(screen, X_ERROR,
-		   "shmget(lowmem) error: %s\n",strerror(errno));
-	goto error2;
-    }
-
-    ((linuxInt10Priv*)pInt->private)->lowMem = low_mem;
-    base = shmat(low_mem, 0, 0);
-    if (base == SHMERRORPTR) {
-	xf86DrvMsg(screen, X_ERROR,
-		   "shmat(low_mem) error: %s\n",strerror(errno));
-	goto error3;
-    }
-    ((linuxInt10Priv *)pInt->private)->base = base;
-    if (high_mem > -1) {
-	base_high = shmat(high_mem, 0, 0);
-	if (base_high == SHMERRORPTR) {
-	    xf86DrvMsg(screen, X_ERROR,
-		       "shmat(high_mem) error: %s\n",strerror(errno));
-	    goto error3;
-	}
-	((linuxInt10Priv*)pInt->private)->base_high = base_high;
-    } else
-	((linuxInt10Priv*)pInt->private)->base_high = NULL;
-
-    if (!MapCurrentInt10(pInt))
-	goto error3;
-    
-    Int10Current = pInt;
-
-    DebugF("Mapping int area\n");
-    if (xf86ReadBIOS(0, 0, (unsigned char *)0, LOW_PAGE_SIZE) < 0) {
-	xf86DrvMsg(screen, X_ERROR, "Cannot read int vect\n");
-	goto error3;
-    }
-    DebugF("done\n");
-    /*
-     * Read in everything between V_BIOS and SYS_BIOS as some system BIOSes
-     * have executable code there.  Note that xf86ReadBIOS() can only bring in
-     * 64K bytes at a time.
-     */
-    if (!videoBiosMapped) {
-	memset((pointer)V_BIOS, 0, SYS_BIOS - V_BIOS);
-	DebugF("Reading BIOS\n");
-	for (cs = V_BIOS;  cs < SYS_BIOS;  cs += V_BIOS_SIZE)
-	    if (xf86ReadBIOS(cs, 0, (pointer)cs, V_BIOS_SIZE) < V_BIOS_SIZE)
-		xf86DrvMsg(screen, X_WARNING,
-			   "Unable to retrieve all of segment 0x%06lX.\n",
-			   (long)cs);
-	DebugF("done\n");
-    }
-
-    if (xf86IsEntityPrimary(entityIndex) && !(initPrimary(options))) {
-	if (!xf86int10GetBiosSegment(pInt, NULL))
-	    goto error3;
-
-	set_return_trap(pInt);
-#ifdef _PC	
-	pInt->Flags = Flags & (SET_BIOS_SCRATCH | RESTORE_BIOS_SCRATCH);
-	if (! (pInt->Flags & SET_BIOS_SCRATCH))
-	    pInt->Flags &= ~RESTORE_BIOS_SCRATCH;
-  	xf86Int10SaveRestoreBIOSVars(pInt, TRUE);
-#endif
-    } else {
-	const BusType location_type = xf86int10GetBiosLocationType(pInt);
-
-	switch (location_type) {
-	case BUS_PCI: {
-	    int err;
-	    struct pci_device *rom_device =
-		xf86GetPciInfoForEntity(pInt->entityIndex);
-
-#if HAVE_PCI_DEVICE_ENABLE
-	    pci_device_enable(rom_device);
-#endif
-
-	    err = pci_device_read_rom(rom_device, (unsigned char *)(V_BIOS));
-	    if (err) {
-		xf86DrvMsg(screen,X_ERROR,"Cannot read V_BIOS (%s)\n",
-			   strerror(err));
-		goto error3;
-	    }
-
-	    pInt->BIOSseg = V_BIOS >> 4;
-	    break;
-	}
-	default:
-	    goto error3;
-	}
-
-	pInt->num = 0xe6;
-	reset_int_vect(pInt);
-	set_return_trap(pInt);
-	LockLegacyVGA(pInt, &vga);
-	xf86ExecX86int10(pInt);
-	UnlockLegacyVGA(pInt, &vga);
-    }
-#ifdef DEBUG
-    dprint(0xc0000, 0x20);
-#endif
-
-    xfree(options);
-    return pInt;
-
-error3:
-    if (base_high)
-	shmdt(base_high);
-    shmdt(base);
-    shmdt(0);
-    if (base_high)
-	shmdt((char*)HIGH_MEM);
-    shmctl(low_mem, IPC_RMID, NULL);
-    Int10Current = NULL;
-error2:
-    if (high_mem > -1)
-	shmctl(high_mem, IPC_RMID,NULL);
-error1:
-    if (vMem)
-	munmap(vMem, SYS_BIOS - V_BIOS);
-    xfree(((linuxInt10Priv*)pInt->private)->alloc);
-    xfree(pInt->private);
-error0:
-    xfree(options);
-    xfree(pInt);
-    return NULL;
-}
-
-Bool
-MapCurrentInt10(xf86Int10InfoPtr pInt)
-{
-    pointer addr;
-    int fd = -1;
-    
-    if (Int10Current) {
-	shmdt(0);
-	if (((linuxInt10Priv*)Int10Current->private)->highMem >= 0)
-	    shmdt((char*)HIGH_MEM);
-	else
-	    munmap((pointer)V_BIOS, (SYS_BIOS - V_BIOS));
-    }
-    addr = shmat(((linuxInt10Priv*)pInt->private)->lowMem, (char*)1, SHM_RND);
-    if (addr == SHMERRORPTR) {
-	xf86DrvMsg(pInt->scrnIndex, X_ERROR, "Cannot shmat() low memory\n");
-	xf86DrvMsg(pInt->scrnIndex, X_ERROR,
-		   "shmat(low_mem) error: %s\n",strerror(errno));
-	return FALSE;
-    }
-    if (mprotect((void*)0, V_RAM, PROT_READ|PROT_WRITE|PROT_EXEC) != 0)
-        xf86DrvMsg(pInt->scrnIndex, X_ERROR,
-		   "Cannot set EXEC bit on low memory: %s\n", strerror(errno));
-
-    if (((linuxInt10Priv*)pInt->private)->highMem >= 0) {
-	addr = shmat(((linuxInt10Priv*)pInt->private)->highMem,
-		     (char*)HIGH_MEM, 0);
-	if (addr == SHMERRORPTR) {
-	    xf86DrvMsg(pInt->scrnIndex, X_ERROR,
-		       "Cannot shmat() high memory\n");
-	    xf86DrvMsg(pInt->scrnIndex, X_ERROR,
-		       "shmget error: %s\n",strerror(errno));
-	    return FALSE;
-	}
-	if (mprotect((void*)HIGH_MEM, HIGH_MEM_SIZE,
-		     PROT_READ|PROT_WRITE|PROT_EXEC) != 0)
-	    xf86DrvMsg(pInt->scrnIndex, X_ERROR,
-		       "Cannot set EXEC bit on high memory: %s\n",
-		       strerror(errno));
-    } else {
-	if ((fd = open(DEV_MEM, O_RDWR, 0)) >= 0) {
-	    if (mmap((void *)(V_BIOS), SYS_BIOS - V_BIOS,
-			     PROT_READ | PROT_WRITE | PROT_EXEC,
-			     MAP_SHARED | MAP_FIXED, fd, V_BIOS)
-		== MAP_FAILED) {
-		xf86DrvMsg(pInt->scrnIndex, X_ERROR, "Cannot map V_BIOS\n");
-		close (fd);
-		return FALSE;
-	    }
-	} else {
-	    xf86DrvMsg(pInt->scrnIndex, X_ERROR, "Cannot open %s\n",DEV_MEM);
-	    return FALSE;
-	}
-	close (fd);
-    }
-    
-    return TRUE;
-}
-
-void
-xf86FreeInt10(xf86Int10InfoPtr pInt)
-{
-    if (!pInt)
-	return;
-
-#ifdef _PC
-    xf86Int10SaveRestoreBIOSVars(pInt, FALSE); 
-#endif
-    if (Int10Current == pInt) {
-	shmdt(0);
-	if (((linuxInt10Priv*)pInt->private)->highMem >= 0)
-	    shmdt((char*)HIGH_MEM);
-	else
-	    munmap((pointer)V_BIOS, (SYS_BIOS - V_BIOS));
-	Int10Current = NULL;
-    }
-    
-    if (((linuxInt10Priv*)pInt->private)->base_high)
-	shmdt(((linuxInt10Priv*)pInt->private)->base_high);
-    shmdt(((linuxInt10Priv*)pInt->private)->base);
-    shmctl(((linuxInt10Priv*)pInt->private)->lowMem, IPC_RMID, NULL);
-    if (((linuxInt10Priv*)pInt->private)->highMem >= 0)
-	shmctl(((linuxInt10Priv*)pInt->private)->highMem, IPC_RMID, NULL);
-    xfree(((linuxInt10Priv*)pInt->private)->alloc);
-    xfree(pInt->private);
-    xfree(pInt);
-}
-
-void *
-xf86Int10AllocPages(xf86Int10InfoPtr pInt, int num, int *off)
-{
-    int pagesize = getpagesize();
-    int num_pages = ALLOC_ENTRIES(pagesize);
-    int i, j;
-
-    for (i = 0; i < (num_pages - num); i++) {
-	if (((linuxInt10Priv*)pInt->private)->alloc[i] == 0) {
-	    for (j = i; j < (num + i); j++)
-		if ((((linuxInt10Priv*)pInt->private)->alloc[j] != 0))
-		    break;
-	    if (j == (num + i))
-		break;
-	    else
-		i = i + num;
-	}
-    }
-    if (i == (num_pages - num))
-	return NULL;
-
-    for (j = i; j < (i + num); j++)
-	((linuxInt10Priv*)pInt->private)->alloc[j] = 1;
-
-    *off = (i + 1) * pagesize;
-
-    return ((linuxInt10Priv*)pInt->private)->base + ((i + 1) * pagesize);
-}
-
-void
-xf86Int10FreePages(xf86Int10InfoPtr pInt, void *pbase, int num)
-{
-    int pagesize = getpagesize();
-    int first = (((unsigned long)pbase
-		 - (unsigned long)((linuxInt10Priv*)pInt->private)->base)
-	/ pagesize) - 1;
-    int i;
-
-    for (i = first; i < (first + num); i++)
-	((linuxInt10Priv*)pInt->private)->alloc[i] = 0;
-}
-
-static CARD8
-read_b(xf86Int10InfoPtr pInt, int addr)
-{
-    return *((CARD8 *)(memType)addr);
-}
-
-static CARD16
-read_w(xf86Int10InfoPtr pInt, int addr)
-{
-    return *((CARD16 *)(memType)addr);
-}
-
-static CARD32
-read_l(xf86Int10InfoPtr pInt, int addr)
-{
-    return *((CARD32 *)(memType)addr);
-}
-
-static void
-write_b(xf86Int10InfoPtr pInt, int addr, CARD8 val)
-{
-    *((CARD8 *)(memType)addr) = val;
-}
-
-static void
-write_w(xf86Int10InfoPtr pInt, int addr, CARD16 val)
-{
-    *((CARD16 *)(memType)addr) = val;
-}
-
-static
-void write_l(xf86Int10InfoPtr pInt, int addr, CARD32 val)
-{
-    *((CARD32 *)(memType) addr) = val;
-}
-
-pointer
-xf86int10Addr(xf86Int10InfoPtr pInt, CARD32 addr)
-{
-    if (addr < V_RAM)
-	return ((linuxInt10Priv*)pInt->private)->base + addr;
-    else if (addr < V_BIOS)
-	return (pointer)(memType)addr;
-    else if (addr < SYS_BIOS) {
-	if (((linuxInt10Priv*)pInt->private)->base_high)
-	    return (pointer)(((linuxInt10Priv*)pInt->private)->base_high
-			     - V_BIOS + addr);
-	else
-	    return (pointer) (memType)addr;
-    } else
-	return (pointer) (memType)addr;
-}
-
-#if defined DoSubModules
-
-static Bool
-vm86_tst(void)
-{
-    int __res;
-
-#ifdef __PIC__
-    /* When compiling with -fPIC, we can't use asm constraint "b" because
-       %ebx is already taken by gcc. */
-    __asm__ __volatile__("pushl %%ebx\n\t"
-			 "movl %2,%%ebx\n\t"
-			 "movl %1,%%eax\n\t"
-			 "int $0x80\n\t"
-			 "popl %%ebx"
-			 :"=a" (__res)
-			 :"n" ((int)113), "r" (NULL));
-#else
-    __asm__ __volatile__("int $0x80\n\t"
-			 :"=a" (__res):"a" ((int)113),
-			 "b" ((struct vm86_struct *)NULL));
-#endif
-
-    if (__res < 0 && __res == -ENOSYS) 
-	return FALSE;
-
-    return TRUE;
-}
-
-static Int10LinuxSubModuleState
-int10LinuxLoadSubModule(ScrnInfoPtr pScrn)
-{
-    if (vm86_tst()) {
-	if (xf86LoadSubModule(pScrn,"vm86"))
-	    return INT10_LOADED_VM86;
-    } 
-    if (xf86LoadSubModule(pScrn,"x86emu"))
-	return INT10_LOADED_X86EMU;
-
-    return INT10_LOAD_FAILED;
-}
-
-#endif /* DoSubModules */
+/*

+ * linux specific part of the int10 module

+ * Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2008 Egbert Eich

+ */

+#ifdef HAVE_XORG_CONFIG_H

+#include <xorg-config.h>

+#endif

+

+#include "xf86.h"

+#include "xf86_OSproc.h"

+#include "xf86Pci.h"

+#include "compiler.h"

+#define _INT10_PRIVATE

+#include "xf86int10.h"

+#ifdef __sparc__

+#define DEV_MEM "/dev/fb"

+#else

+#define DEV_MEM "/dev/mem"

+#endif

+#define ALLOC_ENTRIES(x) ((V_RAM / x) - 1)

+#define SHMERRORPTR (pointer)(-1)

+

+#include <fcntl.h>

+#include <errno.h>

+#include <sys/mman.h>

+#include <sys/ipc.h>

+#include <sys/shm.h>

+#include <unistd.h>

+#include <string.h>

+

+static int counter = 0;

+static unsigned long int10Generation = 0;

+

+static CARD8 read_b(xf86Int10InfoPtr pInt, int addr);

+static CARD16 read_w(xf86Int10InfoPtr pInt, int addr);

+static CARD32 read_l(xf86Int10InfoPtr pInt, int addr);

+static void write_b(xf86Int10InfoPtr pInt, int addr, CARD8 val);

+static void write_w(xf86Int10InfoPtr pInt, int addr, CARD16 val);

+static void write_l(xf86Int10InfoPtr pInt, int addr, CARD32 val);

+

+int10MemRec linuxMem = {

+    read_b,

+    read_w,

+    read_l,

+    write_b,

+    write_w,

+    write_l

+};

+

+typedef struct {

+    int lowMem;

+    int highMem;

+    char* base;

+    char* base_high;

+    int screen;

+    char* alloc;

+} linuxInt10Priv;

+

+#if defined DoSubModules

+

+typedef enum {

+    INT10_NOT_LOADED,

+    INT10_LOADED_VM86,

+    INT10_LOADED_X86EMU,

+    INT10_LOAD_FAILED

+} Int10LinuxSubModuleState;

+

+static Int10LinuxSubModuleState loadedSubModule = INT10_NOT_LOADED;

+

+static Int10LinuxSubModuleState int10LinuxLoadSubModule(ScrnInfoPtr pScrn);

+

+#endif /* DoSubModules */

+

+xf86Int10InfoPtr

+xf86ExtendedInitInt10(int entityIndex, int Flags)

+{

+    xf86Int10InfoPtr pInt = NULL;

+    int screen;

+    int fd;

+    static void* vidMem = NULL;

+    static void* sysMem = NULL;

+    void* vMem = NULL;

+    void *options = NULL;

+    int low_mem;

+    int high_mem = -1;

+    char *base = SHMERRORPTR;

+    char *base_high = SHMERRORPTR;

+    int pagesize; 

+    memType cs;

+    legacyVGARec vga;

+    Bool videoBiosMapped = FALSE;

+    

+    if (int10Generation != serverGeneration) {

+	counter = 0;

+	int10Generation = serverGeneration;

+    }

+

+    screen = (xf86FindScreenForEntity(entityIndex))->scrnIndex;

+

+    options = xf86HandleInt10Options(xf86Screens[screen],entityIndex);

+

+    if (int10skip(options)) {

+	free(options);

+	return NULL;

+    }

+

+#if defined DoSubModules

+    if (loadedSubModule == INT10_NOT_LOADED) 

+	loadedSubModule = int10LinuxLoadSubModule(xf86Screens[screen]);

+

+    if (loadedSubModule == INT10_LOAD_FAILED)

+	return NULL;

+#endif

+

+    if ((!vidMem) || (!sysMem)) {

+	if ((fd = open(DEV_MEM, O_RDWR, 0)) >= 0) {

+	    if (!sysMem) {

+		DebugF("Mapping sys bios area\n");

+		if ((sysMem = mmap((void *)(SYS_BIOS), BIOS_SIZE,

+				   PROT_READ | PROT_EXEC,

+				   MAP_SHARED | MAP_FIXED, fd, SYS_BIOS))

+		    == MAP_FAILED) {

+		    xf86DrvMsg(screen, X_ERROR, "Cannot map SYS BIOS\n");

+		    close(fd);

+		    goto error0;

+		}

+	    }

+	    if (!vidMem) {

+		DebugF("Mapping VRAM area\n");

+		if ((vidMem = mmap((void *)(V_RAM), VRAM_SIZE,

+				   PROT_READ | PROT_WRITE | PROT_EXEC,

+				   MAP_SHARED | MAP_FIXED, fd, V_RAM))

+		    == MAP_FAILED) {

+		    xf86DrvMsg(screen, X_ERROR, "Cannot map V_RAM\n");

+		    close(fd);

+		    goto error0;

+		}

+	    }

+	    close(fd);

+	} else {

+	    xf86DrvMsg(screen, X_ERROR, "Cannot open %s\n", DEV_MEM);

+	    goto error0;

+	}

+    }

+

+    pInt = (xf86Int10InfoPtr)xnfcalloc(1, sizeof(xf86Int10InfoRec));

+    pInt->scrnIndex = screen;

+    pInt->entityIndex = entityIndex;

+    pInt->dev = xf86GetPciInfoForEntity(entityIndex);

+

+    if (!xf86Int10ExecSetup(pInt))

+	goto error0;

+    pInt->mem = &linuxMem;

+    pagesize = getpagesize();

+    pInt->private = (pointer)xnfcalloc(1, sizeof(linuxInt10Priv));

+    ((linuxInt10Priv*)pInt->private)->screen = screen;

+    ((linuxInt10Priv*)pInt->private)->alloc =

+	(pointer)xnfcalloc(1, ALLOC_ENTRIES(pagesize));

+

+    if (!xf86IsEntityPrimary(entityIndex)) {

+	DebugF("Mapping high memory area\n");

+	if ((high_mem = shmget(counter++, HIGH_MEM_SIZE,

+			       IPC_CREAT | SHM_R | SHM_W)) == -1) {

+	    if (errno == ENOSYS)

+		xf86DrvMsg(screen, X_ERROR, "shmget error\n Please reconfigure"

+			   " your kernel to include System V IPC support\n");

+	    else

+		xf86DrvMsg(screen, X_ERROR,

+			   "shmget(highmem) error: %s\n",strerror(errno));

+	    goto error1;

+	}

+    } else {

+	DebugF("Mapping Video BIOS\n");

+	videoBiosMapped = TRUE;

+	if ((fd = open(DEV_MEM, O_RDWR, 0)) >= 0) {

+	    if ((vMem = mmap((void *)(V_BIOS), SYS_BIOS - V_BIOS,

+			     PROT_READ | PROT_WRITE | PROT_EXEC,

+			     MAP_SHARED | MAP_FIXED, fd, V_BIOS))

+		== MAP_FAILED) {

+		xf86DrvMsg(screen, X_ERROR, "Cannot map V_BIOS\n");

+		close(fd);

+		goto error1;

+	    }

+	    close (fd);

+	} else

+	    goto error1;

+    }

+    ((linuxInt10Priv*)pInt->private)->highMem = high_mem;

+    

+    DebugF("Mapping 640kB area\n");

+    if ((low_mem = shmget(counter++, V_RAM,

+			  IPC_CREAT | SHM_R | SHM_W)) == -1) {

+	xf86DrvMsg(screen, X_ERROR,

+		   "shmget(lowmem) error: %s\n",strerror(errno));

+	goto error2;

+    }

+

+    ((linuxInt10Priv*)pInt->private)->lowMem = low_mem;

+    base = shmat(low_mem, 0, 0);

+    if (base == SHMERRORPTR) {

+	xf86DrvMsg(screen, X_ERROR,

+		   "shmat(low_mem) error: %s\n",strerror(errno));

+	goto error3;

+    }

+    ((linuxInt10Priv *)pInt->private)->base = base;

+    if (high_mem > -1) {

+	base_high = shmat(high_mem, 0, 0);

+	if (base_high == SHMERRORPTR) {

+	    xf86DrvMsg(screen, X_ERROR,

+		       "shmat(high_mem) error: %s\n",strerror(errno));

+	    goto error3;

+	}

+	((linuxInt10Priv*)pInt->private)->base_high = base_high;

+    } else

+	((linuxInt10Priv*)pInt->private)->base_high = NULL;

+

+    if (!MapCurrentInt10(pInt))

+	goto error3;

+    

+    Int10Current = pInt;

+

+    DebugF("Mapping int area\n");

+    if (xf86ReadBIOS(0, 0, (unsigned char *)0, LOW_PAGE_SIZE) < 0) {

+	xf86DrvMsg(screen, X_ERROR, "Cannot read int vect\n");

+	goto error3;

+    }

+    DebugF("done\n");

+    /*

+     * Read in everything between V_BIOS and SYS_BIOS as some system BIOSes

+     * have executable code there.  Note that xf86ReadBIOS() can only bring in

+     * 64K bytes at a time.

+     */

+    if (!videoBiosMapped) {

+	memset((pointer)V_BIOS, 0, SYS_BIOS - V_BIOS);

+	DebugF("Reading BIOS\n");

+	for (cs = V_BIOS;  cs < SYS_BIOS;  cs += V_BIOS_SIZE)

+	    if (xf86ReadBIOS(cs, 0, (pointer)cs, V_BIOS_SIZE) < V_BIOS_SIZE)

+		xf86DrvMsg(screen, X_WARNING,

+			   "Unable to retrieve all of segment 0x%06lX.\n",

+			   (long)cs);

+	DebugF("done\n");

+    }

+

+    if (xf86IsEntityPrimary(entityIndex) && !(initPrimary(options))) {

+	if (!xf86int10GetBiosSegment(pInt, NULL))

+	    goto error3;

+

+	set_return_trap(pInt);

+#ifdef _PC	

+	pInt->Flags = Flags & (SET_BIOS_SCRATCH | RESTORE_BIOS_SCRATCH);

+	if (! (pInt->Flags & SET_BIOS_SCRATCH))

+	    pInt->Flags &= ~RESTORE_BIOS_SCRATCH;

+  	xf86Int10SaveRestoreBIOSVars(pInt, TRUE);

+#endif

+    } else {

+	const BusType location_type = xf86int10GetBiosLocationType(pInt);

+

+	switch (location_type) {

+	case BUS_PCI: {

+	    int err;

+	    struct pci_device *rom_device =

+		xf86GetPciInfoForEntity(pInt->entityIndex);

+

+#if HAVE_PCI_DEVICE_ENABLE

+	    pci_device_enable(rom_device);

+#endif

+

+	    err = pci_device_read_rom(rom_device, (unsigned char *)(V_BIOS));

+	    if (err) {

+		xf86DrvMsg(screen,X_ERROR,"Cannot read V_BIOS (%s)\n",

+			   strerror(err));

+		goto error3;

+	    }

+

+	    pInt->BIOSseg = V_BIOS >> 4;

+	    break;

+	}

+	default:

+	    goto error3;

+	}

+

+	pInt->num = 0xe6;

+	reset_int_vect(pInt);

+	set_return_trap(pInt);

+	LockLegacyVGA(pInt, &vga);

+	xf86ExecX86int10(pInt);

+	UnlockLegacyVGA(pInt, &vga);

+    }

+#ifdef DEBUG

+    dprint(0xc0000, 0x20);

+#endif

+

+    free(options);

+    return pInt;

+

+error3:

+    if (base_high)

+	shmdt(base_high);

+    shmdt(base);

+    shmdt(0);

+    if (base_high)

+	shmdt((char*)HIGH_MEM);

+    shmctl(low_mem, IPC_RMID, NULL);

+    Int10Current = NULL;

+error2:

+    if (high_mem > -1)

+	shmctl(high_mem, IPC_RMID,NULL);

+error1:

+    if (vMem)

+	munmap(vMem, SYS_BIOS - V_BIOS);

+    free(((linuxInt10Priv*)pInt->private)->alloc);

+    free(pInt->private);

+error0:

+    free(options);

+    free(pInt);

+    return NULL;

+}

+

+Bool

+MapCurrentInt10(xf86Int10InfoPtr pInt)

+{

+    pointer addr;

+    int fd = -1;

+    

+    if (Int10Current) {

+	shmdt(0);

+	if (((linuxInt10Priv*)Int10Current->private)->highMem >= 0)

+	    shmdt((char*)HIGH_MEM);

+	else

+	    munmap((pointer)V_BIOS, (SYS_BIOS - V_BIOS));

+    }

+    addr = shmat(((linuxInt10Priv*)pInt->private)->lowMem, (char*)1, SHM_RND);

+    if (addr == SHMERRORPTR) {

+	xf86DrvMsg(pInt->scrnIndex, X_ERROR, "Cannot shmat() low memory\n");

+	xf86DrvMsg(pInt->scrnIndex, X_ERROR,

+		   "shmat(low_mem) error: %s\n",strerror(errno));

+	return FALSE;

+    }

+    if (mprotect((void*)0, V_RAM, PROT_READ|PROT_WRITE|PROT_EXEC) != 0)

+        xf86DrvMsg(pInt->scrnIndex, X_ERROR,

+		   "Cannot set EXEC bit on low memory: %s\n", strerror(errno));

+

+    if (((linuxInt10Priv*)pInt->private)->highMem >= 0) {

+	addr = shmat(((linuxInt10Priv*)pInt->private)->highMem,

+		     (char*)HIGH_MEM, 0);

+	if (addr == SHMERRORPTR) {

+	    xf86DrvMsg(pInt->scrnIndex, X_ERROR,

+		       "Cannot shmat() high memory\n");

+	    xf86DrvMsg(pInt->scrnIndex, X_ERROR,

+		       "shmget error: %s\n",strerror(errno));

+	    return FALSE;

+	}

+	if (mprotect((void*)HIGH_MEM, HIGH_MEM_SIZE,

+		     PROT_READ|PROT_WRITE|PROT_EXEC) != 0)

+	    xf86DrvMsg(pInt->scrnIndex, X_ERROR,

+		       "Cannot set EXEC bit on high memory: %s\n",

+		       strerror(errno));

+    } else {

+	if ((fd = open(DEV_MEM, O_RDWR, 0)) >= 0) {

+	    if (mmap((void *)(V_BIOS), SYS_BIOS - V_BIOS,

+			     PROT_READ | PROT_WRITE | PROT_EXEC,

+			     MAP_SHARED | MAP_FIXED, fd, V_BIOS)

+		== MAP_FAILED) {

+		xf86DrvMsg(pInt->scrnIndex, X_ERROR, "Cannot map V_BIOS\n");

+		close (fd);

+		return FALSE;

+	    }

+	} else {

+	    xf86DrvMsg(pInt->scrnIndex, X_ERROR, "Cannot open %s\n",DEV_MEM);

+	    return FALSE;

+	}

+	close (fd);

+    }

+    

+    return TRUE;

+}

+

+void

+xf86FreeInt10(xf86Int10InfoPtr pInt)

+{

+    if (!pInt)

+	return;

+

+#ifdef _PC

+    xf86Int10SaveRestoreBIOSVars(pInt, FALSE); 

+#endif

+    if (Int10Current == pInt) {

+	shmdt(0);

+	if (((linuxInt10Priv*)pInt->private)->highMem >= 0)

+	    shmdt((char*)HIGH_MEM);

+	else

+	    munmap((pointer)V_BIOS, (SYS_BIOS - V_BIOS));

+	Int10Current = NULL;

+    }

+    

+    if (((linuxInt10Priv*)pInt->private)->base_high)

+	shmdt(((linuxInt10Priv*)pInt->private)->base_high);

+    shmdt(((linuxInt10Priv*)pInt->private)->base);

+    shmctl(((linuxInt10Priv*)pInt->private)->lowMem, IPC_RMID, NULL);

+    if (((linuxInt10Priv*)pInt->private)->highMem >= 0)

+	shmctl(((linuxInt10Priv*)pInt->private)->highMem, IPC_RMID, NULL);

+    free(((linuxInt10Priv*)pInt->private)->alloc);

+    free(pInt->private);

+    free(pInt);

+}

+

+void *

+xf86Int10AllocPages(xf86Int10InfoPtr pInt, int num, int *off)

+{

+    int pagesize = getpagesize();

+    int num_pages = ALLOC_ENTRIES(pagesize);

+    int i, j;

+

+    for (i = 0; i < (num_pages - num); i++) {

+	if (((linuxInt10Priv*)pInt->private)->alloc[i] == 0) {

+	    for (j = i; j < (num + i); j++)

+		if ((((linuxInt10Priv*)pInt->private)->alloc[j] != 0))

+		    break;

+	    if (j == (num + i))

+		break;

+	    else

+		i = i + num;

+	}

+    }

+    if (i == (num_pages - num))

+	return NULL;

+

+    for (j = i; j < (i + num); j++)

+	((linuxInt10Priv*)pInt->private)->alloc[j] = 1;

+

+    *off = (i + 1) * pagesize;

+

+    return ((linuxInt10Priv*)pInt->private)->base + ((i + 1) * pagesize);

+}

+

+void

+xf86Int10FreePages(xf86Int10InfoPtr pInt, void *pbase, int num)

+{

+    int pagesize = getpagesize();

+    int first = (((unsigned long)pbase

+		 - (unsigned long)((linuxInt10Priv*)pInt->private)->base)

+	/ pagesize) - 1;

+    int i;

+

+    for (i = first; i < (first + num); i++)

+	((linuxInt10Priv*)pInt->private)->alloc[i] = 0;

+}

+

+static CARD8

+read_b(xf86Int10InfoPtr pInt, int addr)

+{

+    return *((CARD8 *)(memType)addr);

+}

+

+static CARD16

+read_w(xf86Int10InfoPtr pInt, int addr)

+{

+    return *((CARD16 *)(memType)addr);

+}

+

+static CARD32

+read_l(xf86Int10InfoPtr pInt, int addr)

+{

+    return *((CARD32 *)(memType)addr);

+}

+

+static void

+write_b(xf86Int10InfoPtr pInt, int addr, CARD8 val)

+{

+    *((CARD8 *)(memType)addr) = val;

+}

+

+static void

+write_w(xf86Int10InfoPtr pInt, int addr, CARD16 val)

+{

+    *((CARD16 *)(memType)addr) = val;

+}

+

+static

+void write_l(xf86Int10InfoPtr pInt, int addr, CARD32 val)

+{

+    *((CARD32 *)(memType) addr) = val;

+}

+

+pointer

+xf86int10Addr(xf86Int10InfoPtr pInt, CARD32 addr)

+{

+    if (addr < V_RAM)

+	return ((linuxInt10Priv*)pInt->private)->base + addr;

+    else if (addr < V_BIOS)

+	return (pointer)(memType)addr;

+    else if (addr < SYS_BIOS) {

+	if (((linuxInt10Priv*)pInt->private)->base_high)

+	    return (pointer)(((linuxInt10Priv*)pInt->private)->base_high

+			     - V_BIOS + addr);

+	else

+	    return (pointer) (memType)addr;

+    } else

+	return (pointer) (memType)addr;

+}

+

+#if defined DoSubModules

+

+static Bool

+vm86_tst(void)

+{

+    int __res;

+

+#ifdef __PIC__

+    /* When compiling with -fPIC, we can't use asm constraint "b" because

+       %ebx is already taken by gcc. */

+    __asm__ __volatile__("pushl %%ebx\n\t"

+			 "movl %2,%%ebx\n\t"

+			 "movl %1,%%eax\n\t"

+			 "int $0x80\n\t"

+			 "popl %%ebx"

+			 :"=a" (__res)

+			 :"n" ((int)113), "r" (NULL));

+#else

+    __asm__ __volatile__("int $0x80\n\t"

+			 :"=a" (__res):"a" ((int)113),

+			 "b" ((struct vm86_struct *)NULL));

+#endif

+

+    if (__res < 0 && __res == -ENOSYS) 

+	return FALSE;

+

+    return TRUE;

+}

+

+static Int10LinuxSubModuleState

+int10LinuxLoadSubModule(ScrnInfoPtr pScrn)

+{

+    if (vm86_tst()) {

+	if (xf86LoadSubModule(pScrn,"vm86"))

+	    return INT10_LOADED_VM86;

+    } 

+    if (xf86LoadSubModule(pScrn,"x86emu"))

+	return INT10_LOADED_X86EMU;

+

+    return INT10_LOAD_FAILED;

+}

+

+#endif /* DoSubModules */

diff --git a/xorg-server/hw/xfree86/os-support/linux/lnx_agp.c b/xorg-server/hw/xfree86/os-support/linux/lnx_agp.c
index 61437406d..3fa897366 100644
--- a/xorg-server/hw/xfree86/os-support/linux/lnx_agp.c
+++ b/xorg-server/hw/xfree86/os-support/linux/lnx_agp.c
@@ -1,374 +1,374 @@
-/*
- * Abstraction of the AGP GART interface.
- *
- * This version is for Linux and Free/Open/NetBSD.
- *
- * Copyright © 2000 VA Linux Systems, Inc.
- * Copyright © 2001 The XFree86 Project, Inc.
- */
-
-
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
-
-#include <X11/X.h>
-#include "xf86.h"
-#include "xf86Priv.h"
-#include "xf86_OSlib.h"
-#include "xf86OSpriv.h"
-
-#if defined(linux)
-#include <asm/ioctl.h>
-#include <linux/agpgart.h>
-#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
-#include <sys/ioctl.h>
-#include <sys/agpio.h>
-#endif
-
-#ifndef AGP_DEVICE
-#define AGP_DEVICE		"/dev/agpgart"
-#endif
-/* AGP page size is independent of the host page size. */
-#ifndef AGP_PAGE_SIZE
-#define AGP_PAGE_SIZE		4096
-#endif
-#define AGPGART_MAJOR_VERSION	0
-#define AGPGART_MINOR_VERSION	99
-
-static int gartFd = -1;
-static int acquiredScreen = -1;
-static Bool initDone = FALSE;
-/*
- * Close /dev/agpgart.  This frees all associated memory allocated during
- * this server generation.
- */
-Bool
-xf86GARTCloseScreen(int screenNum)
-{
-	if(gartFd != -1) {
-		close(gartFd);
-		acquiredScreen = -1;
-		gartFd = -1;
-		initDone = FALSE;
-	}
-	return TRUE;
-}
-
-/*
- * Open /dev/agpgart.  Keep it open until xf86GARTCloseScreen is called.
- */
-static Bool
-GARTInit(int screenNum)
-{
-	struct _agp_info agpinf;
-
-	if (initDone)
-		return (gartFd != -1);
-
-	initDone = TRUE;
-
-	if (gartFd == -1)
-		gartFd = open(AGP_DEVICE, O_RDWR, 0);
-	else
-		return FALSE;
-
-	if (gartFd == -1) {
-	    xf86DrvMsg(screenNum, X_ERROR,
-		"GARTInit: Unable to open " AGP_DEVICE " (%s)\n",
-		strerror(errno));
-	    return FALSE;
-	}
-
-	xf86AcquireGART(-1);
-	/* Check the kernel driver version. */
-	if (ioctl(gartFd, AGPIOC_INFO, &agpinf) != 0) {
-		xf86DrvMsg(screenNum, X_ERROR,
-			"GARTInit: AGPIOC_INFO failed (%s)\n", strerror(errno));
-		close(gartFd);
-		gartFd = -1;
-		return FALSE;
-	}
-	xf86ReleaseGART(-1);
-
-#if defined(linux)
-	/* Per Dave Jones, every effort will be made to keep the 
-	 * agpgart interface backwards compatible, so allow all 
-	 * future versions.
-	 */
-	if (
-#if (AGPGART_MAJOR_VERSION > 0) /* quiet compiler */
-	    agpinf.version.major < AGPGART_MAJOR_VERSION ||
-#endif
-	    (agpinf.version.major == AGPGART_MAJOR_VERSION &&
-	     agpinf.version.minor < AGPGART_MINOR_VERSION)) {
-		xf86DrvMsg(screenNum, X_ERROR,
-			"GARTInit: Kernel agpgart driver version is not current"
-			" (%d.%d vs %d.%d)\n",
-			agpinf.version.major, agpinf.version.minor,
-			AGPGART_MAJOR_VERSION, AGPGART_MINOR_VERSION);
-		close(gartFd);
-		gartFd = -1;
-		return FALSE;
-	}
-#endif
-	
-	return TRUE;
-}
-
-Bool
-xf86AgpGARTSupported(void)
-{
-	return GARTInit(-1);
-}
-
-AgpInfoPtr
-xf86GetAGPInfo(int screenNum)
-{
-	struct _agp_info agpinf;
-	AgpInfoPtr info;
-
-	if (!GARTInit(screenNum))
-		return NULL;
-
-
-	if ((info = xcalloc(sizeof(AgpInfo), 1)) == NULL) {
-		xf86DrvMsg(screenNum, X_ERROR,
-			   "xf86GetAGPInfo: Failed to allocate AgpInfo\n");
-		return NULL;
-	}
-
-	memset((char*)&agpinf, 0, sizeof(agpinf));
-
-	if (ioctl(gartFd, AGPIOC_INFO, &agpinf) != 0) {
-		xf86DrvMsg(screenNum, X_ERROR,
-			   "xf86GetAGPInfo: AGPIOC_INFO failed (%s)\n",
-			   strerror(errno));
-		return NULL;
-	}
-
-	info->bridgeId = agpinf.bridge_id;
-	info->agpMode = agpinf.agp_mode;
-	info->base = agpinf.aper_base;
-	info->size = agpinf.aper_size;
-	info->totalPages = agpinf.pg_total;
-	info->systemPages = agpinf.pg_system;
-	info->usedPages = agpinf.pg_used;
-
-	xf86DrvMsg(screenNum, X_INFO, "Kernel reported %zu total, %zu used\n", agpinf.pg_total, agpinf.pg_used);
-
-	return info;
-}
-
-/*
- * XXX If multiple screens can acquire the GART, should we have a reference
- * count instead of using acquiredScreen?
- */
-
-Bool
-xf86AcquireGART(int screenNum)
-{
-	if (screenNum != -1 && !GARTInit(screenNum))
-		return FALSE;
-
-	if (screenNum == -1 || acquiredScreen != screenNum) {
-		if (ioctl(gartFd, AGPIOC_ACQUIRE, 0) != 0) {
-			xf86DrvMsg(screenNum, X_WARNING,
-				"xf86AcquireGART: AGPIOC_ACQUIRE failed (%s)\n",
-				strerror(errno));
-			return FALSE;
-		}
-		acquiredScreen = screenNum;
-	}
-	return TRUE;
-}
-
-Bool
-xf86ReleaseGART(int screenNum)
-{
-	if (screenNum != -1 && !GARTInit(screenNum))
-		return FALSE;
-
-	if (acquiredScreen == screenNum) {
-		/*
-		 * The FreeBSD agp driver removes allocations on release.
-		 * The Linux driver doesn't.  xf86ReleaseGART() is expected
-		 * to give up access to the GART, but not to remove any
-		 * allocations.
-		 */
-#if !defined(linux)
-	    if (screenNum == -1)
-#endif
-	    {
-		if (ioctl(gartFd, AGPIOC_RELEASE, 0) != 0) {
-			xf86DrvMsg(screenNum, X_WARNING,
-				"xf86ReleaseGART: AGPIOC_RELEASE failed (%s)\n",
-				strerror(errno));
-			return FALSE;
-		}
-		acquiredScreen = -1;
-	    }
-	    return TRUE;
-	}
-	return FALSE;
-}
-
-int
-xf86AllocateGARTMemory(int screenNum, unsigned long size, int type,
-			unsigned long *physical)
-{
-	struct _agp_allocate alloc;
-	int pages;
-
-	/*
-	 * Allocates "size" bytes of GART memory (rounds up to the next
-	 * page multiple) or type "type".  A handle (key) for the allocated
-	 * memory is returned.  On error, the return value is -1.
-	 */
-
-	if (!GARTInit(screenNum) || acquiredScreen != screenNum)
-		return -1;
-
-	pages = (size / AGP_PAGE_SIZE);
-	if (size % AGP_PAGE_SIZE != 0)
-		pages++;
-
-	/* XXX check for pages == 0? */
-
-	alloc.pg_count = pages;
-	alloc.type = type;
-
-	if (ioctl(gartFd, AGPIOC_ALLOCATE, &alloc) != 0) {
-		xf86DrvMsg(screenNum, X_WARNING, "xf86AllocateGARTMemory: "
-			   "allocation of %d pages failed\n\t(%s)\n", pages,
-			   strerror(errno));
-		return -1;
-	}
-
-	if (physical)
-		*physical = alloc.physical;
-
-	return alloc.key;
-}
-
-Bool
-xf86DeallocateGARTMemory(int screenNum, int key)
-{
-	if (!GARTInit(screenNum) || acquiredScreen != screenNum)
-		return FALSE;
-
-	if (acquiredScreen != screenNum) {
-		xf86DrvMsg(screenNum, X_ERROR,
-                   "xf86UnbindGARTMemory: AGP not acquired by this screen\n");
-		return FALSE;
-	}
-
-#ifdef __linux__
-	if (ioctl(gartFd, AGPIOC_DEALLOCATE, (int *)key) != 0) {
-#else
-	if (ioctl(gartFd, AGPIOC_DEALLOCATE, &key) != 0) {
-#endif
-		xf86DrvMsg(screenNum, X_WARNING,"xf86DeAllocateGARTMemory: "
-                   "deallocation gart memory with key %d failed\n\t(%s)\n",
-                   key, strerror(errno));
-		return FALSE;
-	}
-
-	return TRUE;
-}
-
-/* Bind GART memory with "key" at "offset" */
-Bool
-xf86BindGARTMemory(int screenNum, int key, unsigned long offset)
-{
-	struct _agp_bind bind;
-	int pageOffset;
-
-	if (!GARTInit(screenNum) || acquiredScreen != screenNum)
-		return FALSE;
-
-	if (acquiredScreen != screenNum) {
-		xf86DrvMsg(screenNum, X_ERROR,
-		      "xf86BindGARTMemory: AGP not acquired by this screen\n");
-		return FALSE;
-	}
-
-	if (offset % AGP_PAGE_SIZE != 0) {
-		xf86DrvMsg(screenNum, X_WARNING, "xf86BindGARTMemory: "
-			   "offset (0x%lx) is not page-aligned (%d)\n",
-			   offset, AGP_PAGE_SIZE);
-		return FALSE;
-	}
-	pageOffset = offset / AGP_PAGE_SIZE;
-
-	xf86DrvMsgVerb(screenNum, X_INFO, 3,
-		       "xf86BindGARTMemory: bind key %d at 0x%08lx "
-		       "(pgoffset %d)\n", key, offset, pageOffset);
-
-	bind.pg_start = pageOffset;
-	bind.key = key;
-
-	if (ioctl(gartFd, AGPIOC_BIND, &bind) != 0) {
-		xf86DrvMsg(screenNum, X_WARNING, "xf86BindGARTMemory: "
-			   "binding of gart memory with key %d\n"
-			   "\tat offset 0x%lx failed (%s)\n",
-			   key, offset, strerror(errno));
-		return FALSE;
-	}
-
-	return TRUE;
-}
-
-
-/* Unbind GART memory with "key" */
-Bool
-xf86UnbindGARTMemory(int screenNum, int key)
-{
-	struct _agp_unbind unbind;
-
-	if (!GARTInit(screenNum) || acquiredScreen != screenNum)
-		return FALSE;
-
-	if (acquiredScreen != screenNum) {
-		xf86DrvMsg(screenNum, X_ERROR,
-		    "xf86UnbindGARTMemory: AGP not acquired by this screen\n");
-		return FALSE;
-	}
-
-	unbind.priority = 0;
-	unbind.key = key;
-
-	if (ioctl(gartFd, AGPIOC_UNBIND, &unbind) != 0) {
-		xf86DrvMsg(screenNum, X_WARNING, "xf86UnbindGARTMemory: "
-			   "unbinding of gart memory with key %d "
-			   "failed (%s)\n", key, strerror(errno));
-		return FALSE;
-	}
-
-	xf86DrvMsgVerb(screenNum, X_INFO, 3,
-		       "xf86UnbindGARTMemory: unbind key %d\n", key);
-
-	return TRUE;
-}
-
-
-/* XXX Interface may change. */
-Bool
-xf86EnableAGP(int screenNum, CARD32 mode)
-{
-	agp_setup setup;
-
-	if (!GARTInit(screenNum) || acquiredScreen != screenNum)
-		return FALSE;
-
-	setup.agp_mode = mode;
-	if (ioctl(gartFd, AGPIOC_SETUP, &setup) != 0) {
-		xf86DrvMsg(screenNum, X_WARNING, "xf86EnableAGP: "
-			   "AGPIOC_SETUP with mode %ld failed (%s)\n",
-			   (unsigned long)mode, strerror(errno));
-		return FALSE;
-	}
-
-	return TRUE;
-}
-
+/*

+ * Abstraction of the AGP GART interface.

+ *

+ * This version is for Linux and Free/Open/NetBSD.

+ *

+ * Copyright © 2000 VA Linux Systems, Inc.

+ * Copyright © 2001 The XFree86 Project, Inc.

+ */

+

+

+#ifdef HAVE_XORG_CONFIG_H

+#include <xorg-config.h>

+#endif

+

+#include <X11/X.h>

+#include "xf86.h"

+#include "xf86Priv.h"

+#include "xf86_OSlib.h"

+#include "xf86OSpriv.h"

+

+#if defined(linux)

+#include <asm/ioctl.h>

+#include <linux/agpgart.h>

+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)

+#include <sys/ioctl.h>

+#include <sys/agpio.h>

+#endif

+

+#ifndef AGP_DEVICE

+#define AGP_DEVICE		"/dev/agpgart"

+#endif

+/* AGP page size is independent of the host page size. */

+#ifndef AGP_PAGE_SIZE

+#define AGP_PAGE_SIZE		4096

+#endif

+#define AGPGART_MAJOR_VERSION	0

+#define AGPGART_MINOR_VERSION	99

+

+static int gartFd = -1;

+static int acquiredScreen = -1;

+static Bool initDone = FALSE;

+/*

+ * Close /dev/agpgart.  This frees all associated memory allocated during

+ * this server generation.

+ */

+Bool

+xf86GARTCloseScreen(int screenNum)

+{

+	if(gartFd != -1) {

+		close(gartFd);

+		acquiredScreen = -1;

+		gartFd = -1;

+		initDone = FALSE;

+	}

+	return TRUE;

+}

+

+/*

+ * Open /dev/agpgart.  Keep it open until xf86GARTCloseScreen is called.

+ */

+static Bool

+GARTInit(int screenNum)

+{

+	struct _agp_info agpinf;

+

+	if (initDone)

+		return (gartFd != -1);

+

+	initDone = TRUE;

+

+	if (gartFd == -1)

+		gartFd = open(AGP_DEVICE, O_RDWR, 0);

+	else

+		return FALSE;

+

+	if (gartFd == -1) {

+	    xf86DrvMsg(screenNum, X_ERROR,

+		"GARTInit: Unable to open " AGP_DEVICE " (%s)\n",

+		strerror(errno));

+	    return FALSE;

+	}

+

+	xf86AcquireGART(-1);

+	/* Check the kernel driver version. */

+	if (ioctl(gartFd, AGPIOC_INFO, &agpinf) != 0) {

+		xf86DrvMsg(screenNum, X_ERROR,

+			"GARTInit: AGPIOC_INFO failed (%s)\n", strerror(errno));

+		close(gartFd);

+		gartFd = -1;

+		return FALSE;

+	}

+	xf86ReleaseGART(-1);

+

+#if defined(linux)

+	/* Per Dave Jones, every effort will be made to keep the 

+	 * agpgart interface backwards compatible, so allow all 

+	 * future versions.

+	 */

+	if (

+#if (AGPGART_MAJOR_VERSION > 0) /* quiet compiler */

+	    agpinf.version.major < AGPGART_MAJOR_VERSION ||

+#endif

+	    (agpinf.version.major == AGPGART_MAJOR_VERSION &&

+	     agpinf.version.minor < AGPGART_MINOR_VERSION)) {

+		xf86DrvMsg(screenNum, X_ERROR,

+			"GARTInit: Kernel agpgart driver version is not current"

+			" (%d.%d vs %d.%d)\n",

+			agpinf.version.major, agpinf.version.minor,

+			AGPGART_MAJOR_VERSION, AGPGART_MINOR_VERSION);

+		close(gartFd);

+		gartFd = -1;

+		return FALSE;

+	}

+#endif

+	

+	return TRUE;

+}

+

+Bool

+xf86AgpGARTSupported(void)

+{

+	return GARTInit(-1);

+}

+

+AgpInfoPtr

+xf86GetAGPInfo(int screenNum)

+{

+	struct _agp_info agpinf;

+	AgpInfoPtr info;

+

+	if (!GARTInit(screenNum))

+		return NULL;

+

+

+	if ((info = calloc(sizeof(AgpInfo), 1)) == NULL) {

+		xf86DrvMsg(screenNum, X_ERROR,

+			   "xf86GetAGPInfo: Failed to allocate AgpInfo\n");

+		return NULL;

+	}

+

+	memset((char*)&agpinf, 0, sizeof(agpinf));

+

+	if (ioctl(gartFd, AGPIOC_INFO, &agpinf) != 0) {

+		xf86DrvMsg(screenNum, X_ERROR,

+			   "xf86GetAGPInfo: AGPIOC_INFO failed (%s)\n",

+			   strerror(errno));

+		return NULL;

+	}

+

+	info->bridgeId = agpinf.bridge_id;

+	info->agpMode = agpinf.agp_mode;

+	info->base = agpinf.aper_base;

+	info->size = agpinf.aper_size;

+	info->totalPages = agpinf.pg_total;

+	info->systemPages = agpinf.pg_system;

+	info->usedPages = agpinf.pg_used;

+

+	xf86DrvMsg(screenNum, X_INFO, "Kernel reported %zu total, %zu used\n", agpinf.pg_total, agpinf.pg_used);

+

+	return info;

+}

+

+/*

+ * XXX If multiple screens can acquire the GART, should we have a reference

+ * count instead of using acquiredScreen?

+ */

+

+Bool

+xf86AcquireGART(int screenNum)

+{

+	if (screenNum != -1 && !GARTInit(screenNum))

+		return FALSE;

+

+	if (screenNum == -1 || acquiredScreen != screenNum) {

+		if (ioctl(gartFd, AGPIOC_ACQUIRE, 0) != 0) {

+			xf86DrvMsg(screenNum, X_WARNING,

+				"xf86AcquireGART: AGPIOC_ACQUIRE failed (%s)\n",

+				strerror(errno));

+			return FALSE;

+		}

+		acquiredScreen = screenNum;

+	}

+	return TRUE;

+}

+

+Bool

+xf86ReleaseGART(int screenNum)

+{

+	if (screenNum != -1 && !GARTInit(screenNum))

+		return FALSE;

+

+	if (acquiredScreen == screenNum) {

+		/*

+		 * The FreeBSD agp driver removes allocations on release.

+		 * The Linux driver doesn't.  xf86ReleaseGART() is expected

+		 * to give up access to the GART, but not to remove any

+		 * allocations.

+		 */

+#if !defined(linux)

+	    if (screenNum == -1)

+#endif

+	    {

+		if (ioctl(gartFd, AGPIOC_RELEASE, 0) != 0) {

+			xf86DrvMsg(screenNum, X_WARNING,

+				"xf86ReleaseGART: AGPIOC_RELEASE failed (%s)\n",

+				strerror(errno));

+			return FALSE;

+		}

+		acquiredScreen = -1;

+	    }

+	    return TRUE;

+	}

+	return FALSE;

+}

+

+int

+xf86AllocateGARTMemory(int screenNum, unsigned long size, int type,

+			unsigned long *physical)

+{

+	struct _agp_allocate alloc;

+	int pages;

+

+	/*

+	 * Allocates "size" bytes of GART memory (rounds up to the next

+	 * page multiple) or type "type".  A handle (key) for the allocated

+	 * memory is returned.  On error, the return value is -1.

+	 */

+

+	if (!GARTInit(screenNum) || acquiredScreen != screenNum)

+		return -1;

+

+	pages = (size / AGP_PAGE_SIZE);

+	if (size % AGP_PAGE_SIZE != 0)

+		pages++;

+

+	/* XXX check for pages == 0? */

+

+	alloc.pg_count = pages;

+	alloc.type = type;

+

+	if (ioctl(gartFd, AGPIOC_ALLOCATE, &alloc) != 0) {

+		xf86DrvMsg(screenNum, X_WARNING, "xf86AllocateGARTMemory: "

+			   "allocation of %d pages failed\n\t(%s)\n", pages,

+			   strerror(errno));

+		return -1;

+	}

+

+	if (physical)

+		*physical = alloc.physical;

+

+	return alloc.key;

+}

+

+Bool

+xf86DeallocateGARTMemory(int screenNum, int key)

+{

+	if (!GARTInit(screenNum) || acquiredScreen != screenNum)

+		return FALSE;

+

+	if (acquiredScreen != screenNum) {

+		xf86DrvMsg(screenNum, X_ERROR,

+                   "xf86UnbindGARTMemory: AGP not acquired by this screen\n");

+		return FALSE;

+	}

+

+#ifdef __linux__

+	if (ioctl(gartFd, AGPIOC_DEALLOCATE, (int *)key) != 0) {

+#else

+	if (ioctl(gartFd, AGPIOC_DEALLOCATE, &key) != 0) {

+#endif

+		xf86DrvMsg(screenNum, X_WARNING,"xf86DeAllocateGARTMemory: "

+                   "deallocation gart memory with key %d failed\n\t(%s)\n",

+                   key, strerror(errno));

+		return FALSE;

+	}

+

+	return TRUE;

+}

+

+/* Bind GART memory with "key" at "offset" */

+Bool

+xf86BindGARTMemory(int screenNum, int key, unsigned long offset)

+{

+	struct _agp_bind bind;

+	int pageOffset;

+

+	if (!GARTInit(screenNum) || acquiredScreen != screenNum)

+		return FALSE;

+

+	if (acquiredScreen != screenNum) {

+		xf86DrvMsg(screenNum, X_ERROR,

+		      "xf86BindGARTMemory: AGP not acquired by this screen\n");

+		return FALSE;

+	}

+

+	if (offset % AGP_PAGE_SIZE != 0) {

+		xf86DrvMsg(screenNum, X_WARNING, "xf86BindGARTMemory: "

+			   "offset (0x%lx) is not page-aligned (%d)\n",

+			   offset, AGP_PAGE_SIZE);

+		return FALSE;

+	}

+	pageOffset = offset / AGP_PAGE_SIZE;

+

+	xf86DrvMsgVerb(screenNum, X_INFO, 3,

+		       "xf86BindGARTMemory: bind key %d at 0x%08lx "

+		       "(pgoffset %d)\n", key, offset, pageOffset);

+

+	bind.pg_start = pageOffset;

+	bind.key = key;

+

+	if (ioctl(gartFd, AGPIOC_BIND, &bind) != 0) {

+		xf86DrvMsg(screenNum, X_WARNING, "xf86BindGARTMemory: "

+			   "binding of gart memory with key %d\n"

+			   "\tat offset 0x%lx failed (%s)\n",

+			   key, offset, strerror(errno));

+		return FALSE;

+	}

+

+	return TRUE;

+}

+

+

+/* Unbind GART memory with "key" */

+Bool

+xf86UnbindGARTMemory(int screenNum, int key)

+{

+	struct _agp_unbind unbind;

+

+	if (!GARTInit(screenNum) || acquiredScreen != screenNum)

+		return FALSE;

+

+	if (acquiredScreen != screenNum) {

+		xf86DrvMsg(screenNum, X_ERROR,

+		    "xf86UnbindGARTMemory: AGP not acquired by this screen\n");

+		return FALSE;

+	}

+

+	unbind.priority = 0;

+	unbind.key = key;

+

+	if (ioctl(gartFd, AGPIOC_UNBIND, &unbind) != 0) {

+		xf86DrvMsg(screenNum, X_WARNING, "xf86UnbindGARTMemory: "

+			   "unbinding of gart memory with key %d "

+			   "failed (%s)\n", key, strerror(errno));

+		return FALSE;

+	}

+

+	xf86DrvMsgVerb(screenNum, X_INFO, 3,

+		       "xf86UnbindGARTMemory: unbind key %d\n", key);

+

+	return TRUE;

+}

+

+

+/* XXX Interface may change. */

+Bool

+xf86EnableAGP(int screenNum, CARD32 mode)

+{

+	agp_setup setup;

+

+	if (!GARTInit(screenNum) || acquiredScreen != screenNum)

+		return FALSE;

+

+	setup.agp_mode = mode;

+	if (ioctl(gartFd, AGPIOC_SETUP, &setup) != 0) {

+		xf86DrvMsg(screenNum, X_WARNING, "xf86EnableAGP: "

+			   "AGPIOC_SETUP with mode %ld failed (%s)\n",

+			   (unsigned long)mode, strerror(errno));

+		return FALSE;

+	}

+

+	return TRUE;

+}

+

diff --git a/xorg-server/hw/xfree86/os-support/linux/lnx_video.c b/xorg-server/hw/xfree86/os-support/linux/lnx_video.c
index 26a17425a..a515b4080 100644
--- a/xorg-server/hw/xfree86/os-support/linux/lnx_video.c
+++ b/xorg-server/hw/xfree86/os-support/linux/lnx_video.c
@@ -1,878 +1,878 @@
-/*
- * Copyright 1992 by Orest Zborowski <obz@Kodak.com>
- * Copyright 1993 by David Wexelblat <dwex@goblin.org>
- *
- * 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 names of Orest Zborowski and David Wexelblat
- * not be used in advertising or publicity pertaining to distribution of
- * the software without specific, written prior permission.  Orest Zborowski
- * and David Wexelblat make no representations about the suitability of this
- * software for any purpose.  It is provided "as is" without express or
- * implied warranty.
- *
- * OREST ZBOROWSKI AND DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD
- * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS, IN NO EVENT SHALL OREST ZBOROWSKI OR DAVID WEXELBLAT 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 <errno.h>
-#include <string.h>
-
-#include <X11/X.h>
-#include "input.h"
-#include "scrnintstr.h"
-
-#include "xf86.h"
-#include "xf86Priv.h"
-#include "xf86_OSlib.h"
-#include "xf86OSpriv.h"
-#ifdef __alpha__
-#include "shared/xf86Axp.h"
-#endif
-
-#ifdef HAS_MTRR_SUPPORT
-#include <asm/mtrr.h>
-#endif
-
-#ifndef MAP_FAILED
-#define MAP_FAILED ((void *)-1)
-#endif
-
-static Bool ExtendedEnabled = FALSE;
-
-#ifdef __ia64__
-
-#include "compiler.h"
-#include <sys/io.h>
-
-#elif !defined(__powerpc__) && \
-      !defined(__mc68000__) && \
-      !defined(__sparc__) && \
-      !defined(__mips__) && \
-      !defined(__arm__)
-
-/*
- * Due to conflicts with "compiler.h", don't rely on <sys/io.h> to declare
- * these.
- */
-extern int ioperm(unsigned long __from, unsigned long __num, int __turn_on);
-extern int iopl(int __level);
-
-#endif
-
-#ifdef __alpha__
-# define BUS_BASE bus_base
-#else 
-#define BUS_BASE (0)
-#endif /*  __alpha__ */
-
-/***************************************************************************/
-/* Video Memory Mapping section                                            */
-/***************************************************************************/
-
-static pointer mapVidMem(int, unsigned long, unsigned long, int);
-static void unmapVidMem(int, pointer, unsigned long);
-#if defined (__alpha__) 
-extern void sethae(unsigned long hae);
-extern unsigned long _bus_base __P ((void)) __attribute__ ((const));
-extern unsigned long _bus_base_sparse __P ((void)) __attribute__ ((const));
-
-static pointer mapVidMemSparse(int, unsigned long, unsigned long, int);
-extern axpDevice lnxGetAXP(void);
-static void unmapVidMemSparse(int, pointer, unsigned long);
-static axpDevice axpSystem = -1;
-static Bool needSparse;
-static unsigned long hae_thresh;
-static unsigned long hae_mask;
-static unsigned long bus_base;
-#endif
-
-#ifdef HAS_MTRR_SUPPORT
-
-#define SPLIT_WC_REGIONS 1
-
-static pointer setWC(int, unsigned long, unsigned long, Bool, MessageType);
-static void undoWC(int, pointer);
-
-/* The file desc for /proc/mtrr. Once opened, left opened, and the mtrr
-   driver will clean up when we exit. */
-#define MTRR_FD_UNOPENED (-1)	/* We have yet to open /proc/mtrr */
-#define MTRR_FD_PROBLEM (-2)	/* We tried to open /proc/mtrr, but had
-				   a problem. */
-static int mtrr_fd = MTRR_FD_UNOPENED;
-
-/* Open /proc/mtrr. FALSE on failure. Will always fail on Linux 2.0, 
-   and will fail on Linux 2.2 with MTRR support configured out,
-   so verbosity should be chosen appropriately. */
-static Bool
-mtrr_open(int verbosity)
-{
-	/* Only report absence of /proc/mtrr once. */
-	static Bool warned = FALSE;
-
-	if (mtrr_fd == MTRR_FD_UNOPENED) { 
-		mtrr_fd = open("/proc/mtrr", O_WRONLY);
-
-		if (mtrr_fd < 0)
-			mtrr_fd = MTRR_FD_PROBLEM;
-	}
-
-	if (mtrr_fd == MTRR_FD_PROBLEM) {
-		/* To make sure we only ever warn once, need to check
-		   verbosity outside xf86MsgVerb */
-		if (!warned && verbosity <= xf86GetVerbosity()) {
-			xf86MsgVerb(X_WARNING, verbosity,
-				  "System lacks support for changing MTRRs\n");
-			warned = TRUE;
-		}
-
-		return FALSE;
-	}
-	else
-		return TRUE;
-}
-
-/*
- * We maintain a list of WC regions for each physical mapping so they can
- * be undone when unmapping.
- */
-
-struct mtrr_wc_region {
-	struct mtrr_sentry	sentry;
-	Bool			added;		/* added WC or removed it */
-	struct mtrr_wc_region *	next;
-};
-
-
-static struct mtrr_wc_region *
-mtrr_cull_wc_region(int screenNum, unsigned long base, unsigned long size,
-		      MessageType from)
-{
-	/* Some BIOS writers thought that setting wc over the mmio
-	   region of a graphics devices was a good idea. Try to fix
-	   it. */
-
-	struct mtrr_gentry gent;
-	struct mtrr_wc_region *wcreturn = NULL, *wcr;
-	int count, ret=0;
-
-	/* Linux 2.0 users should not get a warning without -verbose */
-	if (!mtrr_open(2))
-		return NULL;
-
-	for (gent.regnum = 0; 
-	     ioctl(mtrr_fd, MTRRIOC_GET_ENTRY, &gent) >= 0;
-	     gent.regnum++) {
-		if (gent.type != MTRR_TYPE_WRCOMB
-		    || gent.base + gent.size <= base
-		    || base + size <= gent.base)
-			continue;
-
-		/* Found an overlapping region. Delete it. */
-		
-		wcr = xalloc(sizeof(*wcr));
-		if (!wcr)
-			return NULL;
-		wcr->sentry.base = gent.base;
-		wcr->sentry.size = gent.size;
-		wcr->sentry.type = MTRR_TYPE_WRCOMB;
-		wcr->added = FALSE;
-		
-		count = 3;
-		while (count-- && 
-		       (ret = ioctl(mtrr_fd, MTRRIOC_KILL_ENTRY, &(wcr->sentry))) < 0);
-		
-		if (ret >= 0) {
-			xf86DrvMsg(screenNum, from,
-				   "Removed MMIO write-combining range "
-				   "(0x%lx,0x%lx)\n",
-				   (unsigned long) gent.base, (unsigned long) gent.size);
-			wcr->next = wcreturn;
-			wcreturn = wcr;
-			gent.regnum--;
-		} else {
-			xfree(wcr);
-			xf86DrvMsgVerb(screenNum, X_WARNING, 0,
-				   "Failed to remove MMIO "
-				   "write-combining range (0x%lx,0x%lx)\n",
-				       gent.base, (unsigned long) gent.size);
-		}
-	}
-	return wcreturn;
-}
-
-
-static struct mtrr_wc_region *
-mtrr_remove_offending(int screenNum, unsigned long base, unsigned long size,
-		      MessageType from)
-{
-    struct mtrr_gentry gent;
-    struct mtrr_wc_region *wcreturn = NULL, **wcr;
-
-    if (!mtrr_open(2))
-	return NULL;
-
-    wcr = &wcreturn;
-    for (gent.regnum = 0; 
-	 ioctl(mtrr_fd, MTRRIOC_GET_ENTRY, &gent) >= 0; gent.regnum++ ) {
-	if (gent.type == MTRR_TYPE_WRCOMB
-	    && ((gent.base >= base && gent.base + gent.size < base + size) || 
-		(gent.base >  base && gent.base + gent.size <= base + size))) {
-	    *wcr = mtrr_cull_wc_region(screenNum, gent.base, gent.size, from);
-	    if (*wcr) gent.regnum--;
-	    while(*wcr) {
-		wcr = &((*wcr)->next);
-	    }
-	}
-    }
-    return wcreturn;
-}
-
-
-static struct mtrr_wc_region *
-mtrr_add_wc_region(int screenNum, unsigned long base, unsigned long size,
-		   MessageType from)
-{
-        struct mtrr_wc_region **wcr, *wcreturn, *curwcr;
-
-       /*
-        * There can be only one....
-        */
-
-	wcreturn = mtrr_remove_offending(screenNum, base, size, from);
-	wcr = &wcreturn;
-	while (*wcr) {
-	    wcr = &((*wcr)->next);
-	} 
-
-	/* Linux 2.0 should not warn, unless the user explicitly asks for
-	   WC. */
-
-	if (!mtrr_open(from == X_CONFIG ? 0 : 2))
-		return wcreturn;
-
-	*wcr = curwcr = xalloc(sizeof(**wcr));
-	if (!curwcr)
-	    return wcreturn;
-
-	curwcr->sentry.base = base;
-	curwcr->sentry.size = size;
-	curwcr->sentry.type = MTRR_TYPE_WRCOMB;
-	curwcr->added = TRUE;
-	curwcr->next = NULL;
-
-#if SPLIT_WC_REGIONS
-	/*
-	 * Splits up the write-combining region if it is not aligned on a
- 	 * size boundary.
-	 */
-
-	{
-	    unsigned long lbase, d_size = 1;
-	    unsigned long n_size = size;
-	    unsigned long n_base = base;
-
-	    for (lbase = n_base, d_size = 1; !(lbase & 1);
-		 lbase = lbase >> 1, d_size <<= 1);
-	    while (d_size > n_size)
-		d_size = d_size >> 1;
-	    DebugF("WC_BASE: 0x%lx WC_END: 0x%lx\n",base,base+d_size-1);
-	    n_base += d_size;
-	    n_size -= d_size;
-	    if (n_size) {
-		xf86DrvMsgVerb(screenNum,X_INFO,3,"Splitting WC range: "
-			       "base: 0x%lx, size: 0x%lx\n",base,size);
-		curwcr->next = mtrr_add_wc_region(screenNum, n_base, n_size,from);
-	    }
-	    curwcr->sentry.size = d_size;
-	} 
-	
-	/*****************************************************************/
-#endif /* SPLIT_WC_REGIONS */
-
-	if (ioctl(mtrr_fd, MTRRIOC_ADD_ENTRY, &curwcr->sentry) >= 0) {
-		/* Avoid printing on every VT switch */
-		if (xf86ServerIsInitialising()) {
-			xf86DrvMsg(screenNum, from,
-				   "Write-combining range (0x%lx,0x%lx)\n",
-				   base, size);
-		}
-		return wcreturn;
-	}
-	else {
-	        *wcr = curwcr->next;
-		xfree(curwcr);
-		
-		/* Don't complain about the VGA region: MTRR fixed
-		   regions aren't currently supported, but might be in
-		   the future. */
-		if ((unsigned long)base >= 0x100000) {
-			xf86DrvMsgVerb(screenNum, X_WARNING, 0,
-				"Failed to set up write-combining range "
-				"(0x%lx,0x%lx)\n", base, size);
-		}
-		return wcreturn;
-	}
-}
-
-static void
-mtrr_undo_wc_region(int screenNum, struct mtrr_wc_region *wcr)
-{
-	struct mtrr_wc_region *p, *prev;
-
-	if (mtrr_fd >= 0) {
-		p = wcr;
-		while (p) {
-			if (p->added)
-				ioctl(mtrr_fd, MTRRIOC_DEL_ENTRY, &p->sentry);
-			prev = p;
-			p = p->next;
-			xfree(prev);
-		}
-	}
-}
-
-static pointer
-setWC(int screenNum, unsigned long base, unsigned long size, Bool enable,
-      MessageType from)
-{
-	if (enable)
-		return mtrr_add_wc_region(screenNum, base, size, from);
-	else
-		return mtrr_cull_wc_region(screenNum, base, size, from);
-}
-
-static void
-undoWC(int screenNum, pointer regioninfo)
-{
-	mtrr_undo_wc_region(screenNum, regioninfo);
-}
-
-#endif /* HAS_MTRR_SUPPORT */
-
-void
-xf86OSInitVidMem(VidMemInfoPtr pVidMem)
-{
-	pVidMem->linearSupported = TRUE;
-#ifdef __alpha__
-	if (axpSystem == -1) {
-	  axpSystem = lnxGetAXP();
-	  if ((needSparse = (_bus_base_sparse() > 0))) {
-	    hae_thresh = xf86AXPParams[axpSystem].hae_thresh;
-	    hae_mask = xf86AXPParams[axpSystem].hae_mask;
-	  }
-	  bus_base = _bus_base();
-	}
-	if (needSparse) {
-	  xf86Msg(X_INFO,"Machine needs sparse mapping\n");
-	  pVidMem->mapMem = mapVidMemSparse;
-	  pVidMem->unmapMem = unmapVidMemSparse;
-	} else {
-	  xf86Msg(X_INFO,"Machine type has 8/16 bit access\n");
-	  pVidMem->mapMem = mapVidMem;
-	  pVidMem->unmapMem = unmapVidMem;
-	}	
-#else
-	pVidMem->mapMem = mapVidMem;
-	pVidMem->unmapMem = unmapVidMem;
-#endif /* __alpha__ */
-
-
-#ifdef HAS_MTRR_SUPPORT
-	pVidMem->setWC = setWC;
-	pVidMem->undoWC = undoWC;
-#endif
-	pVidMem->initialised = TRUE;
-}
-
-#ifdef __sparc__
-/* Basically, you simply cannot do this on Sparc.  You have to do something portable
- * like use /dev/fb* or mmap() on /proc/bus/pci/X/Y nodes. -DaveM
- */
-static pointer mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
-{
-	return NULL;
-}
-#else
-static pointer
-mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
-{
-    pointer base;
-    int fd;
-    int mapflags = MAP_SHARED; 
-    int prot;
-    memType realBase, alignOff;
-
-    realBase = Base & ~(getpagesize() - 1);
-    alignOff = Base - realBase;
-    DebugF("base: %lx, realBase: %lx, alignOff: %lx \n",
-	   Base,realBase,alignOff);
-
-#if defined(__ia64__) || defined(__arm__) || defined(__s390__)
-#ifndef MAP_WRITECOMBINED
-#define MAP_WRITECOMBINED 0x00010000
-#endif
-#ifndef MAP_NONCACHED
-#define MAP_NONCACHED 0x00020000
-#endif
-    if(flags & VIDMEM_FRAMEBUFFER) 
-        mapflags |= MAP_WRITECOMBINED; 
-    else
-        mapflags |= MAP_NONCACHED; 
-#endif
-
-#if 0
-    /* this will disappear when people upgrade their kernels */
-    fd = open(DEV_MEM,
-	      ((flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR) | O_SYNC);
-#else
-    fd = open(DEV_MEM, (flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR);
-#endif
-    if (fd < 0)
-    {
-	FatalError("xf86MapVidMem: failed to open " DEV_MEM " (%s)\n",
-		   strerror(errno));
-    }
-
-    if (flags & VIDMEM_READONLY)
-	prot = PROT_READ;
-    else
-	prot = PROT_READ | PROT_WRITE;
-
-    /* This requires linux-0.99.pl10 or above */
-    base = mmap((caddr_t)0, Size + alignOff, prot, mapflags, fd,
- 		(off_t)realBase  + BUS_BASE);
-    close(fd);
-    if (base == MAP_FAILED) {
-        FatalError("xf86MapVidMem: Could not mmap framebuffer"
-		   " (0x%08lx,0x%lx) (%s)\n", Base, Size,
-		   strerror(errno));
-    }
-    DebugF("base: %lx aligned base: %lx\n",base, base + alignOff);
-    return (char *)base + alignOff;
-}
-#endif /* !(__sparc__) */
-    
-static void
-unmapVidMem(int ScreenNum, pointer Base, unsigned long Size)
-{
-    memType alignOff = (memType)Base 
-	- ((memType)Base & ~(getpagesize() - 1));
-
-    DebugF("alignment offset: %lx\n",alignOff);
-    munmap((caddr_t)((memType)Base - alignOff), (Size + alignOff));
-}
-
-
-/***************************************************************************/
-/* I/O Permissions section                                                 */
-/***************************************************************************/
-
-#if defined(__powerpc__)
-volatile unsigned char *ioBase = NULL;
-
-#ifndef __NR_pciconfig_iobase
-#define __NR_pciconfig_iobase	200
-#endif
-
-#endif
-
-Bool
-xf86EnableIO(void)
-{
-#if defined(__powerpc__)
-	int fd;
-	unsigned int ioBase_phys;
-#endif
-
-	if (ExtendedEnabled)
-		return TRUE;
-
-#if defined(__powerpc__)
-	ioBase_phys = syscall(__NR_pciconfig_iobase, 2, 0, 0);
-
-	fd = open("/dev/mem", O_RDWR);
-	if (ioBase == NULL) {
-		ioBase = (volatile unsigned char *)mmap(0, 0x20000,
-				PROT_READ | PROT_WRITE, MAP_SHARED, fd,
-				ioBase_phys);
-/* Should this be fatal or just a warning? */
-#if 0
-		if (ioBase == MAP_FAILED) {
-		    xf86Msg(X_WARNING,
-			    "xf86EnableIOPorts: Failed to map iobase (%s)\n",
-			    strerror(errno));
-		    return FALSE;
-		}
-#endif
-	}
-	close(fd);
-#elif !defined(__mc68000__) && !defined(__sparc__) && !defined(__mips__) && !defined(__sh__) && !defined(__hppa__) && !defined(__s390__) && !defined(__arm__) && !defined(__m32r__)
-        if (ioperm(0, 1024, 1) || iopl(3)) {
-                if (errno == ENODEV)
-                        ErrorF("xf86EnableIOPorts: no I/O ports found\n");
-                else
-                        FatalError("xf86EnableIOPorts: failed to set IOPL"
-                                   " for I/O (%s)\n", strerror(errno));
-		return FALSE;
-        }
-# if !defined(__alpha__)
-	ioperm(0x40,4,0); /* trap access to the timer chip */
-	ioperm(0x60,4,0); /* trap access to the keyboard controller */
-# endif
-#endif
-	ExtendedEnabled = TRUE;
-
-	return TRUE;
-}
-
-void
-xf86DisableIO(void)
-{
-	if (!ExtendedEnabled)
-		return;
-#if defined(__powerpc__)
-	munmap(ioBase, 0x20000);
-	ioBase = NULL;
-#elif !defined(__mc68000__) && !defined(__sparc__) && !defined(__mips__) && !defined(__sh__) && !defined(__hppa__) && !defined(__arm__) && !defined(__s390__) && !defined(__m32r__)
-	iopl(0);
-	ioperm(0, 1024, 0);
-#endif
-	ExtendedEnabled = FALSE;
-
-	return;
-}
-
-#if defined (__alpha__)
-
-#define vuip    volatile unsigned int *
-
-extern int readDense8(pointer Base, register unsigned long Offset);
-extern int readDense16(pointer Base, register unsigned long Offset);
-extern int readDense32(pointer Base, register unsigned long Offset);
-extern void
-writeDenseNB8(int Value, pointer Base, register unsigned long Offset);
-extern void
-writeDenseNB16(int Value, pointer Base, register unsigned long Offset);
-extern void
-writeDenseNB32(int Value, pointer Base, register unsigned long Offset);
-extern void
-writeDense8(int Value, pointer Base, register unsigned long Offset);
-extern void
-writeDense16(int Value, pointer Base, register unsigned long Offset);
-extern void
-writeDense32(int Value, pointer Base, register unsigned long Offset);
-
-static int readSparse8(pointer Base, register unsigned long Offset);
-static int readSparse16(pointer Base, register unsigned long Offset);
-static int readSparse32(pointer Base, register unsigned long Offset);
-static void
-writeSparseNB8(int Value, pointer Base, register unsigned long Offset);
-static void
-writeSparseNB16(int Value, pointer Base, register unsigned long Offset);
-static void
-writeSparseNB32(int Value, pointer Base, register unsigned long Offset);
-static void
-writeSparse8(int Value, pointer Base, register unsigned long Offset);
-static void
-writeSparse16(int Value, pointer Base, register unsigned long Offset);
-static void
-writeSparse32(int Value, pointer Base, register unsigned long Offset);
-
-#define DENSE_BASE	0x2ff00000000UL
-#define SPARSE_BASE	0x30000000000UL
-
-static unsigned long msb_set = 0;
-
-static pointer
-mapVidMemSparse(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
-{
-    int fd, prot;
-    unsigned long ret, rets = 0;
-
-    static Bool was_here = FALSE;
-
-    if (!was_here) {
-      was_here = TRUE;
-
-      xf86WriteMmio8 = writeSparse8;
-      xf86WriteMmio16 = writeSparse16;
-      xf86WriteMmio32 = writeSparse32;
-      xf86WriteMmioNB8 = writeSparseNB8;
-      xf86WriteMmioNB16 = writeSparseNB16;
-      xf86WriteMmioNB32 = writeSparseNB32;
-      xf86ReadMmio8 = readSparse8;
-      xf86ReadMmio16 = readSparse16;
-      xf86ReadMmio32 = readSparse32;
-    }
-	
-    fd = open(DEV_MEM, (flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR);
-    if (fd < 0) {
-        FatalError("xf86MapVidMem: failed to open " DEV_MEM " (%s)\n",
-		   strerror(errno));
-    }
-
-#if 0
-    xf86Msg(X_INFO,"mapVidMemSparse: try Base 0x%lx size 0x%lx flags 0x%x\n",
-	    Base, Size, flags);
-#endif
-
-    if (flags & VIDMEM_READONLY)
-	prot = PROT_READ;
-    else
-	prot = PROT_READ | PROT_WRITE;
-
-    /* This requirers linux-0.99.pl10 or above */
-
-    /*
-     * Always do DENSE mmap, since read32/write32 currently require it.
-     */
-    ret = (unsigned long)mmap((caddr_t)(DENSE_BASE + Base), Size,
-		   prot, MAP_SHARED, fd,
-		   (off_t) (bus_base + Base));
-
-    /*
-     * Do SPARSE mmap only when MMIO and not MMIO_32BIT, or FRAMEBUFFER
-     * and SPARSE (which should require the use of read/write macros).
-     *
-     * By not SPARSE mmapping an 8MB framebuffer, we can save approx. 256K
-     * bytes worth of pagetable (32 pages).
-     */
-    if (((flags & VIDMEM_MMIO) && !(flags & VIDMEM_MMIO_32BIT)) ||
-	((flags & VIDMEM_FRAMEBUFFER) && (flags & VIDMEM_SPARSE)))
-    {
-        rets = (unsigned long)mmap((caddr_t)(SPARSE_BASE + (Base << 5)),
-				   Size << 5, prot, MAP_SHARED, fd,
-				   (off_t) _bus_base_sparse() + (Base << 5));
-    }
-
-    close(fd);
-      
-    if (ret == (unsigned long)MAP_FAILED) {
-        FatalError("xf86MapVidMemSparse: Could not (dense) mmap fb (%s)\n",
-		   strerror(errno));
-    }
-
-    if (((flags & VIDMEM_MMIO) && !(flags & VIDMEM_MMIO_32BIT)) ||
-	((flags & VIDMEM_FRAMEBUFFER) && (flags & VIDMEM_SPARSE)))
-    {
-        if (rets == (unsigned long)MAP_FAILED ||
-	    rets != (SPARSE_BASE + (Base << 5)))
-	{
-	    FatalError("mapVidMemSparse: Could not (sparse) mmap fb (%s)\n",
-		       strerror(errno));
-	}
-    }
-
-#if 1
-    if (rets)
-        xf86Msg(X_INFO,"mapVidMemSparse: mapped Base 0x%lx size 0x%lx"
-		" to DENSE at 0x%lx and SPARSE at 0x%lx\n",
-		Base, Size, ret, rets);
-    else
-        xf86Msg(X_INFO,"mapVidMemSparse: mapped Base 0x%lx size 0x%lx"
-		" to DENSE only at 0x%lx\n",
-		Base, Size, ret);
-
-#endif
-    return (pointer) ret;
-}
-
-static void
-unmapVidMemSparse(int ScreenNum, pointer Base, unsigned long Size)
-{
-    unsigned long Offset = (unsigned long)Base - DENSE_BASE;
-#if 1
-    xf86Msg(X_INFO,"unmapVidMemSparse: unmapping Base 0x%lx Size 0x%lx\n",
-	    Base, Size);
-#endif
-    /* Unmap DENSE always. */
-    munmap((caddr_t)Base, Size);
-
-    /* Unmap SPARSE always, and ignore error in case we did not map it. */
-    munmap((caddr_t)(SPARSE_BASE + (Offset << 5)), Size << 5);
-}
-
-static int
-readSparse8(pointer Base, register unsigned long Offset)
-{
-    register unsigned long result, shift;
-    register unsigned long msb;
-
-    mem_barrier();
-    Offset += (unsigned long)Base - DENSE_BASE;
-    shift = (Offset & 0x3) << 3;
-    if (Offset >= (hae_thresh)) {
-        msb = Offset & hae_mask;
-        Offset -= msb;
-	if (msb_set != msb) {
-	    sethae(msb);
-	    msb_set = msb;
-	}
-    }
-
-    mem_barrier();
-    result = *(vuip) (SPARSE_BASE + (Offset << 5));
-    result >>= shift;
-    return 0xffUL & result;
-}
-
-static int
-readSparse16(pointer Base, register unsigned long Offset)
-{
-    register unsigned long result, shift;
-    register unsigned long msb;
-
-    mem_barrier();
-    Offset += (unsigned long)Base - DENSE_BASE;
-    shift = (Offset & 0x2) << 3;
-    if (Offset >= hae_thresh) {
-        msb = Offset & hae_mask;
-        Offset -= msb;
-	if (msb_set != msb) {
-	    sethae(msb);
-	    msb_set = msb;
-	}
-    }
-
-    mem_barrier();
-    result = *(vuip)(SPARSE_BASE + (Offset<<5) + (1<<(5-2)));
-    result >>= shift;
-    return 0xffffUL & result;
-}
-
-static int
-readSparse32(pointer Base, register unsigned long Offset)
-{
-    /* NOTE: this is really using DENSE. */
-    mem_barrier();
-    return *(vuip)((unsigned long)Base+(Offset));
-}
-
-static void
-writeSparse8(int Value, pointer Base, register unsigned long Offset)
-{
-    register unsigned long msb;
-    register unsigned int b = Value & 0xffU;
-
-    write_mem_barrier();
-    Offset += (unsigned long)Base - DENSE_BASE;
-    if (Offset >= hae_thresh) {
-        msb = Offset & hae_mask;
-	Offset -= msb;
-	if (msb_set != msb) {
-	    sethae(msb); 
-	    msb_set = msb;
-	}
-    }
-
-    write_mem_barrier();
-    *(vuip) (SPARSE_BASE + (Offset << 5)) = b * 0x01010101;
-}
-
-static void
-writeSparse16(int Value, pointer Base, register unsigned long Offset)
-{
-    register unsigned long msb;
-    register unsigned int w = Value & 0xffffU;
-
-    write_mem_barrier();
-    Offset += (unsigned long)Base - DENSE_BASE;
-    if (Offset >= hae_thresh) {
-        msb = Offset & hae_mask;
-	Offset -= msb;
-	if (msb_set != msb) {
-	    sethae(msb);
-	    msb_set = msb;
-	}
-    }
-
-    write_mem_barrier();
-    *(vuip)(SPARSE_BASE + (Offset<<5) + (1<<(5-2))) = w * 0x00010001;
-}
-
-static void
-writeSparse32(int Value, pointer Base, register unsigned long Offset)
-{
-    /* NOTE: this is really using DENSE. */
-    write_mem_barrier();
-    *(vuip)((unsigned long)Base + (Offset)) = Value;
-    return;
-}
-
-static void
-writeSparseNB8(int Value, pointer Base, register unsigned long Offset)
-{
-    register unsigned long msb;
-    register unsigned int b = Value & 0xffU;
-
-    Offset += (unsigned long)Base - DENSE_BASE;
-    if (Offset >= hae_thresh) {
-        msb = Offset & hae_mask;
-	Offset -= msb;
-	if (msb_set != msb) {
-	    sethae(msb);
-	    msb_set = msb;
-	}
-    }
-    *(vuip) (SPARSE_BASE + (Offset << 5)) = b * 0x01010101;
-}
-
-static void
-writeSparseNB16(int Value, pointer Base, register unsigned long Offset)
-{
-    register unsigned long msb;
-    register unsigned int w = Value & 0xffffU;
-
-    Offset += (unsigned long)Base - DENSE_BASE;
-    if (Offset >= hae_thresh) {
-        msb = Offset & hae_mask;
-	Offset -= msb;
-	if (msb_set != msb) {
-	    sethae(msb);
-	    msb_set = msb;
-	}
-    }
-    *(vuip)(SPARSE_BASE+(Offset<<5)+(1<<(5-2))) = w * 0x00010001;
-}
-
-static void
-writeSparseNB32(int Value, pointer Base, register unsigned long Offset)
-{
-    /* NOTE: this is really using DENSE. */
-    *(vuip)((unsigned long)Base + (Offset)) = Value;
-    return;
-}
-
-void (*xf86WriteMmio8)(int Value, pointer Base, unsigned long Offset)
-     = writeDense8;
-void (*xf86WriteMmio16)(int Value, pointer Base, unsigned long Offset)
-     = writeDense16;
-void (*xf86WriteMmio32)(int Value, pointer Base, unsigned long Offset)
-     = writeDense32;
-void (*xf86WriteMmioNB8)(int Value, pointer Base, unsigned long Offset)
-     = writeDenseNB8;
-void (*xf86WriteMmioNB16)(int Value, pointer Base, unsigned long Offset)
-     = writeDenseNB16;
-void (*xf86WriteMmioNB32)(int Value, pointer Base, unsigned long Offset)
-     = writeDenseNB32;
-int  (*xf86ReadMmio8)(pointer Base, unsigned long Offset)
-     = readDense8;
-int  (*xf86ReadMmio16)(pointer Base, unsigned long Offset)
-     = readDense16;
-int  (*xf86ReadMmio32)(pointer Base, unsigned long Offset)
-     = readDense32;
-
-#endif /* __alpha__ */
+/*

+ * Copyright 1992 by Orest Zborowski <obz@Kodak.com>

+ * Copyright 1993 by David Wexelblat <dwex@goblin.org>

+ *

+ * 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 names of Orest Zborowski and David Wexelblat

+ * not be used in advertising or publicity pertaining to distribution of

+ * the software without specific, written prior permission.  Orest Zborowski

+ * and David Wexelblat make no representations about the suitability of this

+ * software for any purpose.  It is provided "as is" without express or

+ * implied warranty.

+ *

+ * OREST ZBOROWSKI AND DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD

+ * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND

+ * FITNESS, IN NO EVENT SHALL OREST ZBOROWSKI OR DAVID WEXELBLAT 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 <errno.h>

+#include <string.h>

+

+#include <X11/X.h>

+#include "input.h"

+#include "scrnintstr.h"

+

+#include "xf86.h"

+#include "xf86Priv.h"

+#include "xf86_OSlib.h"

+#include "xf86OSpriv.h"

+#ifdef __alpha__

+#include "shared/xf86Axp.h"

+#endif

+

+#ifdef HAS_MTRR_SUPPORT

+#include <asm/mtrr.h>

+#endif

+

+#ifndef MAP_FAILED

+#define MAP_FAILED ((void *)-1)

+#endif

+

+static Bool ExtendedEnabled = FALSE;

+

+#ifdef __ia64__

+

+#include "compiler.h"

+#include <sys/io.h>

+

+#elif !defined(__powerpc__) && \

+      !defined(__mc68000__) && \

+      !defined(__sparc__) && \

+      !defined(__mips__) && \

+      !defined(__arm__)

+

+/*

+ * Due to conflicts with "compiler.h", don't rely on <sys/io.h> to declare

+ * these.

+ */

+extern int ioperm(unsigned long __from, unsigned long __num, int __turn_on);

+extern int iopl(int __level);

+

+#endif

+

+#ifdef __alpha__

+# define BUS_BASE bus_base

+#else 

+#define BUS_BASE (0)

+#endif /*  __alpha__ */

+

+/***************************************************************************/

+/* Video Memory Mapping section                                            */

+/***************************************************************************/

+

+static pointer mapVidMem(int, unsigned long, unsigned long, int);

+static void unmapVidMem(int, pointer, unsigned long);

+#if defined (__alpha__) 

+extern void sethae(unsigned long hae);

+extern unsigned long _bus_base __P ((void)) __attribute__ ((const));

+extern unsigned long _bus_base_sparse __P ((void)) __attribute__ ((const));

+

+static pointer mapVidMemSparse(int, unsigned long, unsigned long, int);

+extern axpDevice lnxGetAXP(void);

+static void unmapVidMemSparse(int, pointer, unsigned long);

+static axpDevice axpSystem = -1;

+static Bool needSparse;

+static unsigned long hae_thresh;

+static unsigned long hae_mask;

+static unsigned long bus_base;

+#endif

+

+#ifdef HAS_MTRR_SUPPORT

+

+#define SPLIT_WC_REGIONS 1

+

+static pointer setWC(int, unsigned long, unsigned long, Bool, MessageType);

+static void undoWC(int, pointer);

+

+/* The file desc for /proc/mtrr. Once opened, left opened, and the mtrr

+   driver will clean up when we exit. */

+#define MTRR_FD_UNOPENED (-1)	/* We have yet to open /proc/mtrr */

+#define MTRR_FD_PROBLEM (-2)	/* We tried to open /proc/mtrr, but had

+				   a problem. */

+static int mtrr_fd = MTRR_FD_UNOPENED;

+

+/* Open /proc/mtrr. FALSE on failure. Will always fail on Linux 2.0, 

+   and will fail on Linux 2.2 with MTRR support configured out,

+   so verbosity should be chosen appropriately. */

+static Bool

+mtrr_open(int verbosity)

+{

+	/* Only report absence of /proc/mtrr once. */

+	static Bool warned = FALSE;

+

+	if (mtrr_fd == MTRR_FD_UNOPENED) { 

+		mtrr_fd = open("/proc/mtrr", O_WRONLY);

+

+		if (mtrr_fd < 0)

+			mtrr_fd = MTRR_FD_PROBLEM;

+	}

+

+	if (mtrr_fd == MTRR_FD_PROBLEM) {

+		/* To make sure we only ever warn once, need to check

+		   verbosity outside xf86MsgVerb */

+		if (!warned && verbosity <= xf86GetVerbosity()) {

+			xf86MsgVerb(X_WARNING, verbosity,

+				  "System lacks support for changing MTRRs\n");

+			warned = TRUE;

+		}

+

+		return FALSE;

+	}

+	else

+		return TRUE;

+}

+

+/*

+ * We maintain a list of WC regions for each physical mapping so they can

+ * be undone when unmapping.

+ */

+

+struct mtrr_wc_region {

+	struct mtrr_sentry	sentry;

+	Bool			added;		/* added WC or removed it */

+	struct mtrr_wc_region *	next;

+};

+

+

+static struct mtrr_wc_region *

+mtrr_cull_wc_region(int screenNum, unsigned long base, unsigned long size,

+		      MessageType from)

+{

+	/* Some BIOS writers thought that setting wc over the mmio

+	   region of a graphics devices was a good idea. Try to fix

+	   it. */

+

+	struct mtrr_gentry gent;

+	struct mtrr_wc_region *wcreturn = NULL, *wcr;

+	int count, ret=0;

+

+	/* Linux 2.0 users should not get a warning without -verbose */

+	if (!mtrr_open(2))

+		return NULL;

+

+	for (gent.regnum = 0; 

+	     ioctl(mtrr_fd, MTRRIOC_GET_ENTRY, &gent) >= 0;

+	     gent.regnum++) {

+		if (gent.type != MTRR_TYPE_WRCOMB

+		    || gent.base + gent.size <= base

+		    || base + size <= gent.base)

+			continue;

+

+		/* Found an overlapping region. Delete it. */

+		

+		wcr = malloc(sizeof(*wcr));

+		if (!wcr)

+			return NULL;

+		wcr->sentry.base = gent.base;

+		wcr->sentry.size = gent.size;

+		wcr->sentry.type = MTRR_TYPE_WRCOMB;

+		wcr->added = FALSE;

+		

+		count = 3;

+		while (count-- && 

+		       (ret = ioctl(mtrr_fd, MTRRIOC_KILL_ENTRY, &(wcr->sentry))) < 0);

+		

+		if (ret >= 0) {

+			xf86DrvMsg(screenNum, from,

+				   "Removed MMIO write-combining range "

+				   "(0x%lx,0x%lx)\n",

+				   (unsigned long) gent.base, (unsigned long) gent.size);

+			wcr->next = wcreturn;

+			wcreturn = wcr;

+			gent.regnum--;

+		} else {

+			free(wcr);

+			xf86DrvMsgVerb(screenNum, X_WARNING, 0,

+				   "Failed to remove MMIO "

+				   "write-combining range (0x%lx,0x%lx)\n",

+				       gent.base, (unsigned long) gent.size);

+		}

+	}

+	return wcreturn;

+}

+

+

+static struct mtrr_wc_region *

+mtrr_remove_offending(int screenNum, unsigned long base, unsigned long size,

+		      MessageType from)

+{

+    struct mtrr_gentry gent;

+    struct mtrr_wc_region *wcreturn = NULL, **wcr;

+

+    if (!mtrr_open(2))

+	return NULL;

+

+    wcr = &wcreturn;

+    for (gent.regnum = 0; 

+	 ioctl(mtrr_fd, MTRRIOC_GET_ENTRY, &gent) >= 0; gent.regnum++ ) {

+	if (gent.type == MTRR_TYPE_WRCOMB

+	    && ((gent.base >= base && gent.base + gent.size < base + size) || 

+		(gent.base >  base && gent.base + gent.size <= base + size))) {

+	    *wcr = mtrr_cull_wc_region(screenNum, gent.base, gent.size, from);

+	    if (*wcr) gent.regnum--;

+	    while(*wcr) {

+		wcr = &((*wcr)->next);

+	    }

+	}

+    }

+    return wcreturn;

+}

+

+

+static struct mtrr_wc_region *

+mtrr_add_wc_region(int screenNum, unsigned long base, unsigned long size,

+		   MessageType from)

+{

+        struct mtrr_wc_region **wcr, *wcreturn, *curwcr;

+

+       /*

+        * There can be only one....

+        */

+

+	wcreturn = mtrr_remove_offending(screenNum, base, size, from);

+	wcr = &wcreturn;

+	while (*wcr) {

+	    wcr = &((*wcr)->next);

+	} 

+

+	/* Linux 2.0 should not warn, unless the user explicitly asks for

+	   WC. */

+

+	if (!mtrr_open(from == X_CONFIG ? 0 : 2))

+		return wcreturn;

+

+	*wcr = curwcr = malloc(sizeof(**wcr));

+	if (!curwcr)

+	    return wcreturn;

+

+	curwcr->sentry.base = base;

+	curwcr->sentry.size = size;

+	curwcr->sentry.type = MTRR_TYPE_WRCOMB;

+	curwcr->added = TRUE;

+	curwcr->next = NULL;

+

+#if SPLIT_WC_REGIONS

+	/*

+	 * Splits up the write-combining region if it is not aligned on a

+ 	 * size boundary.

+	 */

+

+	{

+	    unsigned long lbase, d_size = 1;

+	    unsigned long n_size = size;

+	    unsigned long n_base = base;

+

+	    for (lbase = n_base, d_size = 1; !(lbase & 1);

+		 lbase = lbase >> 1, d_size <<= 1);

+	    while (d_size > n_size)

+		d_size = d_size >> 1;

+	    DebugF("WC_BASE: 0x%lx WC_END: 0x%lx\n",base,base+d_size-1);

+	    n_base += d_size;

+	    n_size -= d_size;

+	    if (n_size) {

+		xf86DrvMsgVerb(screenNum,X_INFO,3,"Splitting WC range: "

+			       "base: 0x%lx, size: 0x%lx\n",base,size);

+		curwcr->next = mtrr_add_wc_region(screenNum, n_base, n_size,from);

+	    }

+	    curwcr->sentry.size = d_size;

+	} 

+	

+	/*****************************************************************/

+#endif /* SPLIT_WC_REGIONS */

+

+	if (ioctl(mtrr_fd, MTRRIOC_ADD_ENTRY, &curwcr->sentry) >= 0) {

+		/* Avoid printing on every VT switch */

+		if (xf86ServerIsInitialising()) {

+			xf86DrvMsg(screenNum, from,

+				   "Write-combining range (0x%lx,0x%lx)\n",

+				   base, size);

+		}

+		return wcreturn;

+	}

+	else {

+	        *wcr = curwcr->next;

+		free(curwcr);

+		

+		/* Don't complain about the VGA region: MTRR fixed

+		   regions aren't currently supported, but might be in

+		   the future. */

+		if ((unsigned long)base >= 0x100000) {

+			xf86DrvMsgVerb(screenNum, X_WARNING, 0,

+				"Failed to set up write-combining range "

+				"(0x%lx,0x%lx)\n", base, size);

+		}

+		return wcreturn;

+	}

+}

+

+static void

+mtrr_undo_wc_region(int screenNum, struct mtrr_wc_region *wcr)

+{

+	struct mtrr_wc_region *p, *prev;

+

+	if (mtrr_fd >= 0) {

+		p = wcr;

+		while (p) {

+			if (p->added)

+				ioctl(mtrr_fd, MTRRIOC_DEL_ENTRY, &p->sentry);

+			prev = p;

+			p = p->next;

+			free(prev);

+		}

+	}

+}

+

+static pointer

+setWC(int screenNum, unsigned long base, unsigned long size, Bool enable,

+      MessageType from)

+{

+	if (enable)

+		return mtrr_add_wc_region(screenNum, base, size, from);

+	else

+		return mtrr_cull_wc_region(screenNum, base, size, from);

+}

+

+static void

+undoWC(int screenNum, pointer regioninfo)

+{

+	mtrr_undo_wc_region(screenNum, regioninfo);

+}

+

+#endif /* HAS_MTRR_SUPPORT */

+

+void

+xf86OSInitVidMem(VidMemInfoPtr pVidMem)

+{

+	pVidMem->linearSupported = TRUE;

+#ifdef __alpha__

+	if (axpSystem == -1) {

+	  axpSystem = lnxGetAXP();

+	  if ((needSparse = (_bus_base_sparse() > 0))) {

+	    hae_thresh = xf86AXPParams[axpSystem].hae_thresh;

+	    hae_mask = xf86AXPParams[axpSystem].hae_mask;

+	  }

+	  bus_base = _bus_base();

+	}

+	if (needSparse) {

+	  xf86Msg(X_INFO,"Machine needs sparse mapping\n");

+	  pVidMem->mapMem = mapVidMemSparse;

+	  pVidMem->unmapMem = unmapVidMemSparse;

+	} else {

+	  xf86Msg(X_INFO,"Machine type has 8/16 bit access\n");

+	  pVidMem->mapMem = mapVidMem;

+	  pVidMem->unmapMem = unmapVidMem;

+	}	

+#else

+	pVidMem->mapMem = mapVidMem;

+	pVidMem->unmapMem = unmapVidMem;

+#endif /* __alpha__ */

+

+

+#ifdef HAS_MTRR_SUPPORT

+	pVidMem->setWC = setWC;

+	pVidMem->undoWC = undoWC;

+#endif

+	pVidMem->initialised = TRUE;

+}

+

+#ifdef __sparc__

+/* Basically, you simply cannot do this on Sparc.  You have to do something portable

+ * like use /dev/fb* or mmap() on /proc/bus/pci/X/Y nodes. -DaveM

+ */

+static pointer mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags)

+{

+	return NULL;

+}

+#else

+static pointer

+mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags)

+{

+    pointer base;

+    int fd;

+    int mapflags = MAP_SHARED; 

+    int prot;

+    memType realBase, alignOff;

+

+    realBase = Base & ~(getpagesize() - 1);

+    alignOff = Base - realBase;

+    DebugF("base: %lx, realBase: %lx, alignOff: %lx \n",

+	   Base,realBase,alignOff);

+

+#if defined(__ia64__) || defined(__arm__) || defined(__s390__)

+#ifndef MAP_WRITECOMBINED

+#define MAP_WRITECOMBINED 0x00010000

+#endif

+#ifndef MAP_NONCACHED

+#define MAP_NONCACHED 0x00020000

+#endif

+    if(flags & VIDMEM_FRAMEBUFFER) 

+        mapflags |= MAP_WRITECOMBINED; 

+    else

+        mapflags |= MAP_NONCACHED; 

+#endif

+

+#if 0

+    /* this will disappear when people upgrade their kernels */

+    fd = open(DEV_MEM,

+	      ((flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR) | O_SYNC);

+#else

+    fd = open(DEV_MEM, (flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR);

+#endif

+    if (fd < 0)

+    {

+	FatalError("xf86MapVidMem: failed to open " DEV_MEM " (%s)\n",

+		   strerror(errno));

+    }

+

+    if (flags & VIDMEM_READONLY)

+	prot = PROT_READ;

+    else

+	prot = PROT_READ | PROT_WRITE;

+

+    /* This requires linux-0.99.pl10 or above */

+    base = mmap((caddr_t)0, Size + alignOff, prot, mapflags, fd,

+ 		(off_t)realBase  + BUS_BASE);

+    close(fd);

+    if (base == MAP_FAILED) {

+        FatalError("xf86MapVidMem: Could not mmap framebuffer"

+		   " (0x%08lx,0x%lx) (%s)\n", Base, Size,

+		   strerror(errno));

+    }

+    DebugF("base: %lx aligned base: %lx\n",base, base + alignOff);

+    return (char *)base + alignOff;

+}

+#endif /* !(__sparc__) */

+    

+static void

+unmapVidMem(int ScreenNum, pointer Base, unsigned long Size)

+{

+    memType alignOff = (memType)Base 

+	- ((memType)Base & ~(getpagesize() - 1));

+

+    DebugF("alignment offset: %lx\n",alignOff);

+    munmap((caddr_t)((memType)Base - alignOff), (Size + alignOff));

+}

+

+

+/***************************************************************************/

+/* I/O Permissions section                                                 */

+/***************************************************************************/

+

+#if defined(__powerpc__)

+volatile unsigned char *ioBase = NULL;

+

+#ifndef __NR_pciconfig_iobase

+#define __NR_pciconfig_iobase	200

+#endif

+

+#endif

+

+Bool

+xf86EnableIO(void)

+{

+#if defined(__powerpc__)

+	int fd;

+	unsigned int ioBase_phys;

+#endif

+

+	if (ExtendedEnabled)

+		return TRUE;

+

+#if defined(__powerpc__)

+	ioBase_phys = syscall(__NR_pciconfig_iobase, 2, 0, 0);

+

+	fd = open("/dev/mem", O_RDWR);

+	if (ioBase == NULL) {

+		ioBase = (volatile unsigned char *)mmap(0, 0x20000,

+				PROT_READ | PROT_WRITE, MAP_SHARED, fd,

+				ioBase_phys);

+/* Should this be fatal or just a warning? */

+#if 0

+		if (ioBase == MAP_FAILED) {

+		    xf86Msg(X_WARNING,

+			    "xf86EnableIOPorts: Failed to map iobase (%s)\n",

+			    strerror(errno));

+		    return FALSE;

+		}

+#endif

+	}

+	close(fd);

+#elif !defined(__mc68000__) && !defined(__sparc__) && !defined(__mips__) && !defined(__sh__) && !defined(__hppa__) && !defined(__s390__) && !defined(__arm__) && !defined(__m32r__)

+        if (ioperm(0, 1024, 1) || iopl(3)) {

+                if (errno == ENODEV)

+                        ErrorF("xf86EnableIOPorts: no I/O ports found\n");

+                else

+                        FatalError("xf86EnableIOPorts: failed to set IOPL"

+                                   " for I/O (%s)\n", strerror(errno));

+		return FALSE;

+        }

+# if !defined(__alpha__)

+	ioperm(0x40,4,0); /* trap access to the timer chip */

+	ioperm(0x60,4,0); /* trap access to the keyboard controller */

+# endif

+#endif

+	ExtendedEnabled = TRUE;

+

+	return TRUE;

+}

+

+void

+xf86DisableIO(void)

+{

+	if (!ExtendedEnabled)

+		return;

+#if defined(__powerpc__)

+	munmap(ioBase, 0x20000);

+	ioBase = NULL;

+#elif !defined(__mc68000__) && !defined(__sparc__) && !defined(__mips__) && !defined(__sh__) && !defined(__hppa__) && !defined(__arm__) && !defined(__s390__) && !defined(__m32r__)

+	iopl(0);

+	ioperm(0, 1024, 0);

+#endif

+	ExtendedEnabled = FALSE;

+

+	return;

+}

+

+#if defined (__alpha__)

+

+#define vuip    volatile unsigned int *

+

+extern int readDense8(pointer Base, register unsigned long Offset);

+extern int readDense16(pointer Base, register unsigned long Offset);

+extern int readDense32(pointer Base, register unsigned long Offset);

+extern void

+writeDenseNB8(int Value, pointer Base, register unsigned long Offset);

+extern void

+writeDenseNB16(int Value, pointer Base, register unsigned long Offset);

+extern void

+writeDenseNB32(int Value, pointer Base, register unsigned long Offset);

+extern void

+writeDense8(int Value, pointer Base, register unsigned long Offset);

+extern void

+writeDense16(int Value, pointer Base, register unsigned long Offset);

+extern void

+writeDense32(int Value, pointer Base, register unsigned long Offset);

+

+static int readSparse8(pointer Base, register unsigned long Offset);

+static int readSparse16(pointer Base, register unsigned long Offset);

+static int readSparse32(pointer Base, register unsigned long Offset);

+static void

+writeSparseNB8(int Value, pointer Base, register unsigned long Offset);

+static void

+writeSparseNB16(int Value, pointer Base, register unsigned long Offset);

+static void

+writeSparseNB32(int Value, pointer Base, register unsigned long Offset);

+static void

+writeSparse8(int Value, pointer Base, register unsigned long Offset);

+static void

+writeSparse16(int Value, pointer Base, register unsigned long Offset);

+static void

+writeSparse32(int Value, pointer Base, register unsigned long Offset);

+

+#define DENSE_BASE	0x2ff00000000UL

+#define SPARSE_BASE	0x30000000000UL

+

+static unsigned long msb_set = 0;

+

+static pointer

+mapVidMemSparse(int ScreenNum, unsigned long Base, unsigned long Size, int flags)

+{

+    int fd, prot;

+    unsigned long ret, rets = 0;

+

+    static Bool was_here = FALSE;

+

+    if (!was_here) {

+      was_here = TRUE;

+

+      xf86WriteMmio8 = writeSparse8;

+      xf86WriteMmio16 = writeSparse16;

+      xf86WriteMmio32 = writeSparse32;

+      xf86WriteMmioNB8 = writeSparseNB8;

+      xf86WriteMmioNB16 = writeSparseNB16;

+      xf86WriteMmioNB32 = writeSparseNB32;

+      xf86ReadMmio8 = readSparse8;

+      xf86ReadMmio16 = readSparse16;

+      xf86ReadMmio32 = readSparse32;

+    }

+	

+    fd = open(DEV_MEM, (flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR);

+    if (fd < 0) {

+        FatalError("xf86MapVidMem: failed to open " DEV_MEM " (%s)\n",

+		   strerror(errno));

+    }

+

+#if 0

+    xf86Msg(X_INFO,"mapVidMemSparse: try Base 0x%lx size 0x%lx flags 0x%x\n",

+	    Base, Size, flags);

+#endif

+

+    if (flags & VIDMEM_READONLY)

+	prot = PROT_READ;

+    else

+	prot = PROT_READ | PROT_WRITE;

+

+    /* This requirers linux-0.99.pl10 or above */

+

+    /*

+     * Always do DENSE mmap, since read32/write32 currently require it.

+     */

+    ret = (unsigned long)mmap((caddr_t)(DENSE_BASE + Base), Size,

+		   prot, MAP_SHARED, fd,

+		   (off_t) (bus_base + Base));

+

+    /*

+     * Do SPARSE mmap only when MMIO and not MMIO_32BIT, or FRAMEBUFFER

+     * and SPARSE (which should require the use of read/write macros).

+     *

+     * By not SPARSE mmapping an 8MB framebuffer, we can save approx. 256K

+     * bytes worth of pagetable (32 pages).

+     */

+    if (((flags & VIDMEM_MMIO) && !(flags & VIDMEM_MMIO_32BIT)) ||

+	((flags & VIDMEM_FRAMEBUFFER) && (flags & VIDMEM_SPARSE)))

+    {

+        rets = (unsigned long)mmap((caddr_t)(SPARSE_BASE + (Base << 5)),

+				   Size << 5, prot, MAP_SHARED, fd,

+				   (off_t) _bus_base_sparse() + (Base << 5));

+    }

+

+    close(fd);

+      

+    if (ret == (unsigned long)MAP_FAILED) {

+        FatalError("xf86MapVidMemSparse: Could not (dense) mmap fb (%s)\n",

+		   strerror(errno));

+    }

+

+    if (((flags & VIDMEM_MMIO) && !(flags & VIDMEM_MMIO_32BIT)) ||

+	((flags & VIDMEM_FRAMEBUFFER) && (flags & VIDMEM_SPARSE)))

+    {

+        if (rets == (unsigned long)MAP_FAILED ||

+	    rets != (SPARSE_BASE + (Base << 5)))

+	{

+	    FatalError("mapVidMemSparse: Could not (sparse) mmap fb (%s)\n",

+		       strerror(errno));

+	}

+    }

+

+#if 1

+    if (rets)

+        xf86Msg(X_INFO,"mapVidMemSparse: mapped Base 0x%lx size 0x%lx"

+		" to DENSE at 0x%lx and SPARSE at 0x%lx\n",

+		Base, Size, ret, rets);

+    else

+        xf86Msg(X_INFO,"mapVidMemSparse: mapped Base 0x%lx size 0x%lx"

+		" to DENSE only at 0x%lx\n",

+		Base, Size, ret);

+

+#endif

+    return (pointer) ret;

+}

+

+static void

+unmapVidMemSparse(int ScreenNum, pointer Base, unsigned long Size)

+{

+    unsigned long Offset = (unsigned long)Base - DENSE_BASE;

+#if 1

+    xf86Msg(X_INFO,"unmapVidMemSparse: unmapping Base 0x%lx Size 0x%lx\n",

+	    Base, Size);

+#endif

+    /* Unmap DENSE always. */

+    munmap((caddr_t)Base, Size);

+

+    /* Unmap SPARSE always, and ignore error in case we did not map it. */

+    munmap((caddr_t)(SPARSE_BASE + (Offset << 5)), Size << 5);

+}

+

+static int

+readSparse8(pointer Base, register unsigned long Offset)

+{

+    register unsigned long result, shift;

+    register unsigned long msb;

+

+    mem_barrier();

+    Offset += (unsigned long)Base - DENSE_BASE;

+    shift = (Offset & 0x3) << 3;

+    if (Offset >= (hae_thresh)) {

+        msb = Offset & hae_mask;

+        Offset -= msb;

+	if (msb_set != msb) {

+	    sethae(msb);

+	    msb_set = msb;

+	}

+    }

+

+    mem_barrier();

+    result = *(vuip) (SPARSE_BASE + (Offset << 5));

+    result >>= shift;

+    return 0xffUL & result;

+}

+

+static int

+readSparse16(pointer Base, register unsigned long Offset)

+{

+    register unsigned long result, shift;

+    register unsigned long msb;

+

+    mem_barrier();

+    Offset += (unsigned long)Base - DENSE_BASE;

+    shift = (Offset & 0x2) << 3;

+    if (Offset >= hae_thresh) {

+        msb = Offset & hae_mask;

+        Offset -= msb;

+	if (msb_set != msb) {

+	    sethae(msb);

+	    msb_set = msb;

+	}

+    }

+

+    mem_barrier();

+    result = *(vuip)(SPARSE_BASE + (Offset<<5) + (1<<(5-2)));

+    result >>= shift;

+    return 0xffffUL & result;

+}

+

+static int

+readSparse32(pointer Base, register unsigned long Offset)

+{

+    /* NOTE: this is really using DENSE. */

+    mem_barrier();

+    return *(vuip)((unsigned long)Base+(Offset));

+}

+

+static void

+writeSparse8(int Value, pointer Base, register unsigned long Offset)

+{

+    register unsigned long msb;

+    register unsigned int b = Value & 0xffU;

+

+    write_mem_barrier();

+    Offset += (unsigned long)Base - DENSE_BASE;

+    if (Offset >= hae_thresh) {

+        msb = Offset & hae_mask;

+	Offset -= msb;

+	if (msb_set != msb) {

+	    sethae(msb); 

+	    msb_set = msb;

+	}

+    }

+

+    write_mem_barrier();

+    *(vuip) (SPARSE_BASE + (Offset << 5)) = b * 0x01010101;

+}

+

+static void

+writeSparse16(int Value, pointer Base, register unsigned long Offset)

+{

+    register unsigned long msb;

+    register unsigned int w = Value & 0xffffU;

+

+    write_mem_barrier();

+    Offset += (unsigned long)Base - DENSE_BASE;

+    if (Offset >= hae_thresh) {

+        msb = Offset & hae_mask;

+	Offset -= msb;

+	if (msb_set != msb) {

+	    sethae(msb);

+	    msb_set = msb;

+	}

+    }

+

+    write_mem_barrier();

+    *(vuip)(SPARSE_BASE + (Offset<<5) + (1<<(5-2))) = w * 0x00010001;

+}

+

+static void

+writeSparse32(int Value, pointer Base, register unsigned long Offset)

+{

+    /* NOTE: this is really using DENSE. */

+    write_mem_barrier();

+    *(vuip)((unsigned long)Base + (Offset)) = Value;

+    return;

+}

+

+static void

+writeSparseNB8(int Value, pointer Base, register unsigned long Offset)

+{

+    register unsigned long msb;

+    register unsigned int b = Value & 0xffU;

+

+    Offset += (unsigned long)Base - DENSE_BASE;

+    if (Offset >= hae_thresh) {

+        msb = Offset & hae_mask;

+	Offset -= msb;

+	if (msb_set != msb) {

+	    sethae(msb);

+	    msb_set = msb;

+	}

+    }

+    *(vuip) (SPARSE_BASE + (Offset << 5)) = b * 0x01010101;

+}

+

+static void

+writeSparseNB16(int Value, pointer Base, register unsigned long Offset)

+{

+    register unsigned long msb;

+    register unsigned int w = Value & 0xffffU;

+

+    Offset += (unsigned long)Base - DENSE_BASE;

+    if (Offset >= hae_thresh) {

+        msb = Offset & hae_mask;

+	Offset -= msb;

+	if (msb_set != msb) {

+	    sethae(msb);

+	    msb_set = msb;

+	}

+    }

+    *(vuip)(SPARSE_BASE+(Offset<<5)+(1<<(5-2))) = w * 0x00010001;

+}

+

+static void

+writeSparseNB32(int Value, pointer Base, register unsigned long Offset)

+{

+    /* NOTE: this is really using DENSE. */

+    *(vuip)((unsigned long)Base + (Offset)) = Value;

+    return;

+}

+

+void (*xf86WriteMmio8)(int Value, pointer Base, unsigned long Offset)

+     = writeDense8;

+void (*xf86WriteMmio16)(int Value, pointer Base, unsigned long Offset)

+     = writeDense16;

+void (*xf86WriteMmio32)(int Value, pointer Base, unsigned long Offset)

+     = writeDense32;

+void (*xf86WriteMmioNB8)(int Value, pointer Base, unsigned long Offset)

+     = writeDenseNB8;

+void (*xf86WriteMmioNB16)(int Value, pointer Base, unsigned long Offset)

+     = writeDenseNB16;

+void (*xf86WriteMmioNB32)(int Value, pointer Base, unsigned long Offset)

+     = writeDenseNB32;

+int  (*xf86ReadMmio8)(pointer Base, unsigned long Offset)

+     = readDense8;

+int  (*xf86ReadMmio16)(pointer Base, unsigned long Offset)

+     = readDense16;

+int  (*xf86ReadMmio32)(pointer Base, unsigned long Offset)

+     = readDense32;

+

+#endif /* __alpha__ */