Merge remote-tracking branch 'origin/released'

Conflicts:
	xorg-server/include/os.h

1 files changed, 403 insertions, 403 deletions

diff --git a/xorg-server/hw/xfree86/common/xf86AutoConfig.c b/xorg-server/hw/xfree86/common/xf86AutoConfig.c
index 1b9253269..7fc6518d3 100644
--- a/xorg-server/hw/xfree86/common/xf86AutoConfig.c
+++ b/xorg-server/hw/xfree86/common/xf86AutoConfig.c
@@ -1,403 +1,403 @@
-/*

- * Copyright 2003 by David H. Dawes.

- * Copyright 2003 by X-Oz Technologies.

- * All rights reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- * 

- * The above copyright notice and this permission notice shall be included in

- * all copies or substantial portions of the Software.

- * 

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR

- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

- * OTHER DEALINGS IN THE SOFTWARE.

- * 

- * Except as contained in this notice, the name of the copyright holder(s)

- * and author(s) shall not be used in advertising or otherwise to promote

- * the sale, use or other dealings in this Software without prior written

- * authorization from the copyright holder(s) and author(s).

- * 

- * Author: David Dawes <dawes@XFree86.Org>.

- */

-

-#ifdef HAVE_XORG_CONFIG_H

-#include <xorg-config.h>

-#endif

-

-#include "xf86.h"

-#include "xf86Parser.h"

-#include "xf86tokens.h"

-#include "xf86Config.h"

-#include "xf86Priv.h"

-#include "xf86_OSlib.h"

-#include "xf86pciBus.h"

-#ifdef __sparc__

-# include "xf86sbusBus.h"

-#endif

-

-#ifdef sun

-# include <sys/visual_io.h>

-# include <ctype.h>

-#endif

-

-/* Sections for the default built-in configuration. */

-

-#define BUILTIN_DEVICE_NAME \

-	"\"Builtin Default %s Device %d\""

-

-#define BUILTIN_DEVICE_SECTION_PRE \

-	"Section \"Device\"\n" \

-	"\tIdentifier\t" BUILTIN_DEVICE_NAME "\n" \

-	"\tDriver\t\"%s\"\n"

-

-#define BUILTIN_DEVICE_SECTION_POST \

-	"EndSection\n\n"

-

-#define BUILTIN_DEVICE_SECTION \

-	BUILTIN_DEVICE_SECTION_PRE \

-	BUILTIN_DEVICE_SECTION_POST

-

-#define BUILTIN_SCREEN_NAME \

-	"\"Builtin Default %s Screen %d\""

-

-#define BUILTIN_SCREEN_SECTION \

-	"Section \"Screen\"\n" \

-	"\tIdentifier\t" BUILTIN_SCREEN_NAME "\n" \

-	"\tDevice\t" BUILTIN_DEVICE_NAME "\n" \

-	"EndSection\n\n"

-

-#define BUILTIN_LAYOUT_SECTION_PRE \

-	"Section \"ServerLayout\"\n" \

-	"\tIdentifier\t\"Builtin Default Layout\"\n"

-

-#define BUILTIN_LAYOUT_SCREEN_LINE \

-	"\tScreen\t" BUILTIN_SCREEN_NAME "\n"

-

-#define BUILTIN_LAYOUT_SECTION_POST \

-	"EndSection\n\n"

-

-static const char **builtinConfig = NULL;

-static int builtinLines = 0;

-

-static void listPossibleVideoDrivers(char *matches[], int nmatches);

-

-/*

- * A built-in config file is stored as an array of strings, with each string

- * representing a single line.  AppendToConfig() breaks up the string "s"

- * into lines, and appends those lines it to builtinConfig.

- */

-

-static void

-AppendToList(const char *s, const char ***list, int *lines)

-{

-    char *str, *newstr, *p;

-

-    str = xnfstrdup(s);

-    for (p = strtok(str, "\n"); p; p = strtok(NULL, "\n")) {

-	(*lines)++;

-	*list = xnfrealloc(*list, (*lines + 1) * sizeof(**list));

-	newstr = xnfalloc(strlen(p) + 2);

-	strcpy(newstr, p);

-	strcat(newstr, "\n");

-	(*list)[*lines - 1] = newstr;

-	(*list)[*lines] = NULL;

-    }

-    free(str);

-}

-

-static void

-FreeList(const char ***list, int *lines)

-{

-    int i;

-

-    for (i = 0; i < *lines; i++) {

-	free((char *)((*list)[i]));

-    }

-    free(*list);

-    *list = NULL;

-    *lines = 0;

-}

-

-static void

-FreeConfig(void)

-{

-    FreeList(&builtinConfig, &builtinLines);

-}

-

-static void

-AppendToConfig(const char *s)

-{

-    AppendToList(s, &builtinConfig, &builtinLines);

-}

-

-Bool

-xf86AutoConfig(void)

-{

-    char *deviceList[20];

-    char **p;

-    const char **cp;

-    char buf[1024];

-    ConfigStatus ret;

-

-    listPossibleVideoDrivers(deviceList, 20);

-

-    for (p = deviceList; *p; p++) {

-	snprintf(buf, sizeof(buf), BUILTIN_DEVICE_SECTION, *p, 0, *p);

-	AppendToConfig(buf);

-	snprintf(buf, sizeof(buf), BUILTIN_SCREEN_SECTION, *p, 0, *p, 0);

-	AppendToConfig(buf);

-    }

-

-    AppendToConfig(BUILTIN_LAYOUT_SECTION_PRE);

-    for (p = deviceList; *p; p++) {

-	snprintf(buf, sizeof(buf), BUILTIN_LAYOUT_SCREEN_LINE, *p, 0);

-	AppendToConfig(buf);

-    }

-    AppendToConfig(BUILTIN_LAYOUT_SECTION_POST);

-

-    for (p = deviceList; *p; p++) {

-	free(*p);

-    }

-

-    xf86MsgVerb(X_DEFAULT, 0,

-		"Using default built-in configuration (%d lines)\n",

-		builtinLines);

-

-    xf86MsgVerb(X_DEFAULT, 3, "--- Start of built-in configuration ---\n");

-    for (cp = builtinConfig; *cp; cp++)

-	xf86ErrorFVerb(3, "\t%s", *cp);

-    xf86MsgVerb(X_DEFAULT, 3, "--- End of built-in configuration ---\n");

-

-    xf86initConfigFiles();

-    xf86setBuiltinConfig(builtinConfig);

-    ret = xf86HandleConfigFile(TRUE);

-    FreeConfig();

-

-    if (ret != CONFIG_OK)

-	xf86Msg(X_ERROR, "Error parsing the built-in default configuration.\n");

-

-    return ret == CONFIG_OK;

-}

-

-static void

-listPossibleVideoDrivers(char *matches[], int nmatches)

-{

-    int i;

-    

-    for (i = 0 ; i < nmatches ; i++) {

-        matches[i] = NULL;

-    }

-    i = 0;

-

-#ifdef sun

-    /* Check for driver type based on /dev/fb type and if valid, use

-       it instead of PCI bus probe results */

-    if (xf86Info.consoleFd >= 0) {

-	struct vis_identifier   visid;

-	const char *cp;

-	extern char xf86SolarisFbDev[PATH_MAX];

-	int iret;

-

-	SYSCALL(iret = ioctl(xf86Info.consoleFd, VIS_GETIDENTIFIER, &visid));

-	if (iret < 0) {

-	    int fbfd;

-

-	    fbfd = open(xf86SolarisFbDev, O_RDONLY);

-	    if (fbfd >= 0) {

-		SYSCALL(iret = ioctl(fbfd, VIS_GETIDENTIFIER, &visid));

-		close(fbfd);

-	    }

-	}

-

-	if (iret < 0) {

-	    xf86Msg(X_WARNING,

-		    "could not get frame buffer identifier from %s\n",

-		    xf86SolarisFbDev);

-	} else {

-	    xf86Msg(X_PROBED, "console driver: %s\n", visid.name);

-

-	    /* Special case from before the general case was set */

-	    if (strcmp(visid.name, "NVDAnvda") == 0) {

-		matches[i++] = xnfstrdup("nvidia");

-	    }

-

-	    /* General case - split into vendor name (initial all-caps

-	       prefix) & driver name (rest of the string). */

-	    if (strcmp(visid.name, "SUNWtext") != 0) {

-		for (cp = visid.name; (*cp != '\0') && isupper(*cp); cp++) {

-		    /* find end of all uppercase vendor section */

-		}

-		if ((cp != visid.name) && (*cp != '\0')) {

-		    char *driverName = xnfstrdup(cp);

-		    char *vendorName = xnfstrdup(visid.name);

-		    vendorName[cp - visid.name] = '\0';

-

-		    matches[i++] = vendorName;

-		    matches[i++] = driverName;

-		}

-	    }

-	}

-    }

-#endif

-#ifdef __sparc__

-    {

-	char *sbusDriver = sparcDriverName();

-	if (sbusDriver)

-	    matches[i++] = xnfstrdup(sbusDriver);

-    }

-#endif

-

-    i = xf86PciMatchDriver(matches, nmatches);

-

-    /* Fallback to platform default hardware */

-    if (i < (nmatches - 1)) {

-#if defined(__i386__) || defined(__amd64__) || defined(__hurd__)

-	matches[i++] = xnfstrdup("vesa");

-#elif defined(__sparc__) && !defined(sun)

-	matches[i++] = xnfstrdup("sunffb");

-#endif

-    }

-

-    /* Fallback to platform default frame buffer driver */

-    if (i < (nmatches - 1)) {

-#if !defined(__linux__) && defined(__sparc__)

-	matches[i++] = xnfstrdup("wsfb");

-#else

-	matches[i++] = xnfstrdup("fbdev");

-#endif

-    }

-}

-

-/* copy a screen section and enter the desired driver

- * and insert it at i in the list of screens */

-static Bool

-copyScreen(confScreenPtr oscreen, GDevPtr odev, int i, char *driver)

-{

-    confScreenPtr nscreen;

-    GDevPtr cptr = NULL;

-

-    nscreen = malloc(sizeof(confScreenRec));

-    if (!nscreen)

-        return FALSE;

-    memcpy(nscreen, oscreen, sizeof(confScreenRec));

-

-    cptr = malloc(sizeof(GDevRec));

-    if (!cptr) {

-        free(nscreen);

-        return FALSE;

-    }

-    memcpy(cptr, odev, sizeof(GDevRec));

-

-    if (asprintf(&cptr->identifier, "Autoconfigured Video Device %s", driver)

-        == -1) {

-        free(cptr);

-        free(nscreen);

-        return FALSE;

-    }

-    cptr->driver = driver;

-

-    xf86ConfigLayout.screens[i].screen = nscreen;

-

-    /* now associate the new driver entry with the new screen entry */

-    xf86ConfigLayout.screens[i].screen->device = cptr;

-    cptr->myScreenSection = xf86ConfigLayout.screens[i].screen;

-

-    return TRUE;

-}

-

-GDevPtr

-autoConfigDevice(GDevPtr preconf_device)

-{

-    GDevPtr ptr = NULL;

-    char *matches[20]; /* If we have more than 20 drivers we're in trouble */

-    int num_matches = 0, num_screens = 0, i;

-    screenLayoutPtr slp;

-

-    if (!xf86configptr) {

-        return NULL;

-    }

-

-    /* If there's a configured section with no driver chosen, use it */

-    if (preconf_device) {

-        ptr = preconf_device;

-    } else {

-        ptr = calloc(1, sizeof(GDevRec));

-        if (!ptr) {

-            return NULL;

-        }

-        ptr->chipID = -1;

-        ptr->chipRev = -1;

-        ptr->irq = -1;

-

-        ptr->active = TRUE;

-        ptr->claimed = FALSE;

-        ptr->identifier = "Autoconfigured Video Device";

-        ptr->driver = NULL;

-    }

-    if (!ptr->driver) {

-        /* get all possible video drivers and count them */

-        listPossibleVideoDrivers(matches, 20);

-        for (; matches[num_matches]; num_matches++) {

-            xf86Msg(X_DEFAULT, "Matched %s as autoconfigured driver %d\n",

-                    matches[num_matches], num_matches);

-        }

-

-        slp = xf86ConfigLayout.screens;

-        if (slp) {

-            /* count the number of screens and make space for

-             * a new screen for each additional possible driver

-             * minus one for the already existing first one

-             * plus one for the terminating NULL */

-            for (; slp[num_screens].screen; num_screens++);

-            xf86ConfigLayout.screens = xnfcalloc(num_screens + num_matches,

-                                                sizeof(screenLayoutRec));

-            xf86ConfigLayout.screens[0] = slp[0];

-

-            /* do the first match and set that for the original first screen */

-            ptr->driver = matches[0];

-            if (!xf86ConfigLayout.screens[0].screen->device) {

-                xf86ConfigLayout.screens[0].screen->device = ptr;

-                ptr->myScreenSection = xf86ConfigLayout.screens[0].screen;

-            }

-

-            /* for each other driver found, copy the first screen, insert it

-             * into the list of screens and set the driver */

-            i = 0;

-            while (i++ < num_matches) {

-                if (!copyScreen(slp[0].screen, ptr, i, matches[i]))

-                    return NULL;

-            }

-

-            /* shift the rest of the original screen list

-             * to the end of the current screen list

-             *

-             * TODO Handle rest of multiple screen sections */

-            for (i = 1; i < num_screens; i++) {

-                xf86ConfigLayout.screens[i+num_matches] = slp[i];

-            }

-            xf86ConfigLayout.screens[num_screens+num_matches-1].screen = NULL;

-            free(slp);

-        } else {

-            /* layout does not have any screens, not much to do */

-            ptr->driver = matches[0];

-            for (i = 1; matches[i] ; i++) {

-                if (matches[i] != matches[0]) {

-                    free(matches[i]);

-                }

-            }

-        }

-    }

-

-    xf86Msg(X_DEFAULT, "Assigned the driver to the xf86ConfigLayout\n");

-

-    return ptr;

-}

+/*
+ * Copyright 2003 by David H. Dawes.
+ * Copyright 2003 by X-Oz Technologies.
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ * Except as contained in this notice, the name of the copyright holder(s)
+ * and author(s) shall not be used in advertising or otherwise to promote
+ * the sale, use or other dealings in this Software without prior written
+ * authorization from the copyright holder(s) and author(s).
+ * 
+ * Author: David Dawes <dawes@XFree86.Org>.
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include "xf86.h"
+#include "xf86Parser.h"
+#include "xf86tokens.h"
+#include "xf86Config.h"
+#include "xf86Priv.h"
+#include "xf86_OSlib.h"
+#include "xf86pciBus.h"
+#ifdef __sparc__
+# include "xf86sbusBus.h"
+#endif
+
+#ifdef sun
+# include <sys/visual_io.h>
+# include <ctype.h>
+#endif
+
+/* Sections for the default built-in configuration. */
+
+#define BUILTIN_DEVICE_NAME \
+	"\"Builtin Default %s Device %d\""
+
+#define BUILTIN_DEVICE_SECTION_PRE \
+	"Section \"Device\"\n" \
+	"\tIdentifier\t" BUILTIN_DEVICE_NAME "\n" \
+	"\tDriver\t\"%s\"\n"
+
+#define BUILTIN_DEVICE_SECTION_POST \
+	"EndSection\n\n"
+
+#define BUILTIN_DEVICE_SECTION \
+	BUILTIN_DEVICE_SECTION_PRE \
+	BUILTIN_DEVICE_SECTION_POST
+
+#define BUILTIN_SCREEN_NAME \
+	"\"Builtin Default %s Screen %d\""
+
+#define BUILTIN_SCREEN_SECTION \
+	"Section \"Screen\"\n" \
+	"\tIdentifier\t" BUILTIN_SCREEN_NAME "\n" \
+	"\tDevice\t" BUILTIN_DEVICE_NAME "\n" \
+	"EndSection\n\n"
+
+#define BUILTIN_LAYOUT_SECTION_PRE \
+	"Section \"ServerLayout\"\n" \
+	"\tIdentifier\t\"Builtin Default Layout\"\n"
+
+#define BUILTIN_LAYOUT_SCREEN_LINE \
+	"\tScreen\t" BUILTIN_SCREEN_NAME "\n"
+
+#define BUILTIN_LAYOUT_SECTION_POST \
+	"EndSection\n\n"
+
+static const char **builtinConfig = NULL;
+static int builtinLines = 0;
+
+static void listPossibleVideoDrivers(char *matches[], int nmatches);
+
+/*
+ * A built-in config file is stored as an array of strings, with each string
+ * representing a single line.  AppendToConfig() breaks up the string "s"
+ * into lines, and appends those lines it to builtinConfig.
+ */
+
+static void
+AppendToList(const char *s, const char ***list, int *lines)
+{
+    char *str, *newstr, *p;
+
+    str = xnfstrdup(s);
+    for (p = strtok(str, "\n"); p; p = strtok(NULL, "\n")) {
+	(*lines)++;
+	*list = xnfrealloc(*list, (*lines + 1) * sizeof(**list));
+	newstr = xnfalloc(strlen(p) + 2);
+	strcpy(newstr, p);
+	strcat(newstr, "\n");
+	(*list)[*lines - 1] = newstr;
+	(*list)[*lines] = NULL;
+    }
+    free(str);
+}
+
+static void
+FreeList(const char ***list, int *lines)
+{
+    int i;
+
+    for (i = 0; i < *lines; i++) {
+	free((char *)((*list)[i]));
+    }
+    free(*list);
+    *list = NULL;
+    *lines = 0;
+}
+
+static void
+FreeConfig(void)
+{
+    FreeList(&builtinConfig, &builtinLines);
+}
+
+static void
+AppendToConfig(const char *s)
+{
+    AppendToList(s, &builtinConfig, &builtinLines);
+}
+
+Bool
+xf86AutoConfig(void)
+{
+    char *deviceList[20];
+    char **p;
+    const char **cp;
+    char buf[1024];
+    ConfigStatus ret;
+
+    listPossibleVideoDrivers(deviceList, 20);
+
+    for (p = deviceList; *p; p++) {
+	snprintf(buf, sizeof(buf), BUILTIN_DEVICE_SECTION, *p, 0, *p);
+	AppendToConfig(buf);
+	snprintf(buf, sizeof(buf), BUILTIN_SCREEN_SECTION, *p, 0, *p, 0);
+	AppendToConfig(buf);
+    }
+
+    AppendToConfig(BUILTIN_LAYOUT_SECTION_PRE);
+    for (p = deviceList; *p; p++) {
+	snprintf(buf, sizeof(buf), BUILTIN_LAYOUT_SCREEN_LINE, *p, 0);
+	AppendToConfig(buf);
+    }
+    AppendToConfig(BUILTIN_LAYOUT_SECTION_POST);
+
+    for (p = deviceList; *p; p++) {
+	free(*p);
+    }
+
+    xf86MsgVerb(X_DEFAULT, 0,
+		"Using default built-in configuration (%d lines)\n",
+		builtinLines);
+
+    xf86MsgVerb(X_DEFAULT, 3, "--- Start of built-in configuration ---\n");
+    for (cp = builtinConfig; *cp; cp++)
+	xf86ErrorFVerb(3, "\t%s", *cp);
+    xf86MsgVerb(X_DEFAULT, 3, "--- End of built-in configuration ---\n");
+
+    xf86initConfigFiles();
+    xf86setBuiltinConfig(builtinConfig);
+    ret = xf86HandleConfigFile(TRUE);
+    FreeConfig();
+
+    if (ret != CONFIG_OK)
+	xf86Msg(X_ERROR, "Error parsing the built-in default configuration.\n");
+
+    return ret == CONFIG_OK;
+}
+
+static void
+listPossibleVideoDrivers(char *matches[], int nmatches)
+{
+    int i;
+    
+    for (i = 0 ; i < nmatches ; i++) {
+        matches[i] = NULL;
+    }
+    i = 0;
+
+#ifdef sun
+    /* Check for driver type based on /dev/fb type and if valid, use
+       it instead of PCI bus probe results */
+    if (xf86Info.consoleFd >= 0) {
+	struct vis_identifier   visid;
+	const char *cp;
+	extern char xf86SolarisFbDev[PATH_MAX];
+	int iret;
+
+	SYSCALL(iret = ioctl(xf86Info.consoleFd, VIS_GETIDENTIFIER, &visid));
+	if (iret < 0) {
+	    int fbfd;
+
+	    fbfd = open(xf86SolarisFbDev, O_RDONLY);
+	    if (fbfd >= 0) {
+		SYSCALL(iret = ioctl(fbfd, VIS_GETIDENTIFIER, &visid));
+		close(fbfd);
+	    }
+	}
+
+	if (iret < 0) {
+	    xf86Msg(X_WARNING,
+		    "could not get frame buffer identifier from %s\n",
+		    xf86SolarisFbDev);
+	} else {
+	    xf86Msg(X_PROBED, "console driver: %s\n", visid.name);
+
+	    /* Special case from before the general case was set */
+	    if (strcmp(visid.name, "NVDAnvda") == 0) {
+		matches[i++] = xnfstrdup("nvidia");
+	    }
+
+	    /* General case - split into vendor name (initial all-caps
+	       prefix) & driver name (rest of the string). */
+	    if (strcmp(visid.name, "SUNWtext") != 0) {
+		for (cp = visid.name; (*cp != '\0') && isupper(*cp); cp++) {
+		    /* find end of all uppercase vendor section */
+		}
+		if ((cp != visid.name) && (*cp != '\0')) {
+		    char *driverName = xnfstrdup(cp);
+		    char *vendorName = xnfstrdup(visid.name);
+		    vendorName[cp - visid.name] = '\0';
+
+		    matches[i++] = vendorName;
+		    matches[i++] = driverName;
+		}
+	    }
+	}
+    }
+#endif
+#ifdef __sparc__
+    {
+	char *sbusDriver = sparcDriverName();
+	if (sbusDriver)
+	    matches[i++] = xnfstrdup(sbusDriver);
+    }
+#endif
+#ifdef XSERVER_LIBPCIACCESS
+    i = xf86PciMatchDriver(matches, nmatches);
+#endif
+    /* Fallback to platform default hardware */
+    if (i < (nmatches - 1)) {
+#if defined(__i386__) || defined(__amd64__) || defined(__hurd__)
+	matches[i++] = xnfstrdup("vesa");
+#elif defined(__sparc__) && !defined(sun)
+	matches[i++] = xnfstrdup("sunffb");
+#endif
+    }
+
+    /* Fallback to platform default frame buffer driver */
+    if (i < (nmatches - 1)) {
+#if !defined(__linux__) && defined(__sparc__)
+	matches[i++] = xnfstrdup("wsfb");
+#else
+	matches[i++] = xnfstrdup("fbdev");
+#endif
+    }
+}
+
+/* copy a screen section and enter the desired driver
+ * and insert it at i in the list of screens */
+static Bool
+copyScreen(confScreenPtr oscreen, GDevPtr odev, int i, char *driver)
+{
+    confScreenPtr nscreen;
+    GDevPtr cptr = NULL;
+
+    nscreen = malloc(sizeof(confScreenRec));
+    if (!nscreen)
+        return FALSE;
+    memcpy(nscreen, oscreen, sizeof(confScreenRec));
+
+    cptr = malloc(sizeof(GDevRec));
+    if (!cptr) {
+        free(nscreen);
+        return FALSE;
+    }
+    memcpy(cptr, odev, sizeof(GDevRec));
+
+    if (asprintf(&cptr->identifier, "Autoconfigured Video Device %s", driver)
+        == -1) {
+        free(cptr);
+        free(nscreen);
+        return FALSE;
+    }
+    cptr->driver = driver;
+
+    xf86ConfigLayout.screens[i].screen = nscreen;
+
+    /* now associate the new driver entry with the new screen entry */
+    xf86ConfigLayout.screens[i].screen->device = cptr;
+    cptr->myScreenSection = xf86ConfigLayout.screens[i].screen;
+
+    return TRUE;
+}
+
+GDevPtr
+autoConfigDevice(GDevPtr preconf_device)
+{
+    GDevPtr ptr = NULL;
+    char *matches[20]; /* If we have more than 20 drivers we're in trouble */
+    int num_matches = 0, num_screens = 0, i;
+    screenLayoutPtr slp;
+
+    if (!xf86configptr) {
+        return NULL;
+    }
+
+    /* If there's a configured section with no driver chosen, use it */
+    if (preconf_device) {
+        ptr = preconf_device;
+    } else {
+        ptr = calloc(1, sizeof(GDevRec));
+        if (!ptr) {
+            return NULL;
+        }
+        ptr->chipID = -1;
+        ptr->chipRev = -1;
+        ptr->irq = -1;
+
+        ptr->active = TRUE;
+        ptr->claimed = FALSE;
+        ptr->identifier = "Autoconfigured Video Device";
+        ptr->driver = NULL;
+    }
+    if (!ptr->driver) {
+        /* get all possible video drivers and count them */
+        listPossibleVideoDrivers(matches, 20);
+        for (; matches[num_matches]; num_matches++) {
+            xf86Msg(X_DEFAULT, "Matched %s as autoconfigured driver %d\n",
+                    matches[num_matches], num_matches);
+        }
+
+        slp = xf86ConfigLayout.screens;
+        if (slp) {
+            /* count the number of screens and make space for
+             * a new screen for each additional possible driver
+             * minus one for the already existing first one
+             * plus one for the terminating NULL */
+            for (; slp[num_screens].screen; num_screens++);
+            xf86ConfigLayout.screens = xnfcalloc(num_screens + num_matches,
+                                                sizeof(screenLayoutRec));
+            xf86ConfigLayout.screens[0] = slp[0];
+
+            /* do the first match and set that for the original first screen */
+            ptr->driver = matches[0];
+            if (!xf86ConfigLayout.screens[0].screen->device) {
+                xf86ConfigLayout.screens[0].screen->device = ptr;
+                ptr->myScreenSection = xf86ConfigLayout.screens[0].screen;
+            }
+
+            /* for each other driver found, copy the first screen, insert it
+             * into the list of screens and set the driver */
+            i = 0;
+            while (i++ < num_matches) {
+                if (!copyScreen(slp[0].screen, ptr, i, matches[i]))
+                    return NULL;
+            }
+
+            /* shift the rest of the original screen list
+             * to the end of the current screen list
+             *
+             * TODO Handle rest of multiple screen sections */
+            for (i = 1; i < num_screens; i++) {
+                xf86ConfigLayout.screens[i+num_matches] = slp[i];
+            }
+            xf86ConfigLayout.screens[num_screens+num_matches-1].screen = NULL;
+            free(slp);
+        } else {
+            /* layout does not have any screens, not much to do */
+            ptr->driver = matches[0];
+            for (i = 1; matches[i] ; i++) {
+                if (matches[i] != matches[0]) {
+                    free(matches[i]);
+                }
+            }
+        }
+    }
+
+    xf86Msg(X_DEFAULT, "Assigned the driver to the xf86ConfigLayout\n");
+
+    return ptr;
+}