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Diffstat (limited to 'xorg-server/hw/xfree86/common/xf86AutoConfig.c')
-rw-r--r--xorg-server/hw/xfree86/common/xf86AutoConfig.c478
1 files changed, 478 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/common/xf86AutoConfig.c b/xorg-server/hw/xfree86/common/xf86AutoConfig.c
new file mode 100644
index 000000000..7e5fab412
--- /dev/null
+++ b/xorg-server/hw/xfree86/common/xf86AutoConfig.c
@@ -0,0 +1,478 @@
+/*
+ * 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 "dirent.h"
+
+/* 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 const char *deviceList[] = {
+ "fbdev",
+ "vesa",
+ NULL
+};
+
+/*
+ * 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;
+ }
+ xfree(str);
+}
+
+static void
+FreeList(const char ***list, int *lines)
+{
+ int i;
+
+ for (i = 0; i < *lines; i++) {
+ if ((*list)[i])
+ xfree((*list)[i]);
+ }
+ xfree(*list);
+ *list = NULL;
+ *lines = 0;
+}
+
+static void
+FreeConfig(void)
+{
+ FreeList(&builtinConfig, &builtinLines);
+}
+
+static void
+AppendToConfig(const char *s)
+{
+ AppendToList(s, &builtinConfig, &builtinLines);
+}
+
+static const char *
+videoPtrToDriverName(struct pci_device *dev)
+{
+ /*
+ * things not handled yet:
+ * cyrix/nsc. should be merged into geode anyway.
+ * xgi.
+ */
+
+ switch (dev->vendor_id)
+ {
+ case 0x1022:
+ if (dev->device_id == 0x2081)
+ return "geode";
+ else
+ return NULL;
+ case 0x1142: return "apm";
+ case 0xedd8: return "ark";
+ case 0x1a03: return "ast";
+ case 0x1002: return "ati";
+ case 0x102c: return "chips";
+ case 0x1013: return "cirrus";
+ case 0x8086:
+ if ((dev->device_id == 0x00d1) || (dev->device_id == 0x7800))
+ return "i740";
+ else return "intel";
+ case 0x102b: return "mga";
+ case 0x10c8: return "neomagic";
+ case 0x105d: return "i128";
+ case 0x10de: case 0x12d2: return "nv";
+ case 0x1163: return "rendition";
+ case 0x5333:
+ switch (dev->device_id)
+ {
+ case 0x88d0: case 0x88d1: case 0x88f0: case 0x8811:
+ case 0x8812: case 0x8814: case 0x8901:
+ return "s3";
+ case 0x5631: case 0x883d: case 0x8a01: case 0x8a10:
+ case 0x8c01: case 0x8c03: case 0x8904: case 0x8a13:
+ return "s3virge";
+ default:
+ return "savage";
+ }
+ case 0x1039: return "sis";
+ case 0x126f: return "siliconmotion";
+ case 0x121a:
+ if (dev->device_id < 0x0003)
+ return "voodoo";
+ else
+ return "tdfx";
+ case 0x3d3d: return "glint";
+ case 0x1023: return "trident";
+ case 0x100c: return "tseng";
+ case 0x1106: return "openchrome";
+ case 0x15ad: return "vmware";
+ default: break;
+ }
+ return NULL;
+}
+
+Bool
+xf86AutoConfig(void)
+{
+ const char **p;
+ char buf[1024];
+ const char *driver = NULL;
+ ConfigStatus ret;
+
+ driver = chooseVideoDriver();
+
+ if (driver) {
+ snprintf(buf, sizeof(buf), BUILTIN_DEVICE_SECTION_PRE,
+ driver, 0, driver);
+ AppendToConfig(buf);
+ ErrorF("New driver is \"%s\"\n", driver);
+ buf[0] = '\t';
+ AppendToConfig(BUILTIN_DEVICE_SECTION_POST);
+ snprintf(buf, sizeof(buf), BUILTIN_SCREEN_SECTION,
+ driver, 0, driver, 0);
+ AppendToConfig(buf);
+ }
+
+ 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);
+ if (driver) {
+ snprintf(buf, sizeof(buf), BUILTIN_LAYOUT_SCREEN_LINE, driver, 0);
+ AppendToConfig(buf);
+ }
+ for (p = deviceList; *p; p++) {
+ snprintf(buf, sizeof(buf), BUILTIN_LAYOUT_SCREEN_LINE, *p, 0);
+ AppendToConfig(buf);
+ }
+ AppendToConfig(BUILTIN_LAYOUT_SECTION_POST);
+
+ xf86MsgVerb(X_DEFAULT, 0,
+ "Using default built-in configuration (%d lines)\n",
+ builtinLines);
+
+ xf86MsgVerb(X_DEFAULT, 3, "--- Start of built-in configuration ---\n");
+ for (p = builtinConfig; *p; p++)
+ xf86ErrorFVerb(3, "\t%s", *p);
+ xf86MsgVerb(X_DEFAULT, 3, "--- End of built-in configuration ---\n");
+
+ 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);
+}
+
+int
+xchomp(char *line)
+{
+ size_t len = 0;
+
+ if (!line) {
+ return 1;
+ }
+
+ len = strlen(line);
+ if (line[len - 1] == '\n' && len > 0) {
+ line[len - 1] = '\0';
+ }
+ return 0;
+}
+
+GDevPtr
+autoConfigDevice(GDevPtr preconf_device)
+{
+ GDevPtr ptr = NULL;
+
+ if (!xf86configptr) {
+ return NULL;
+ }
+
+ /* If there's a configured section with no driver chosen, use it */
+ if (preconf_device) {
+ ptr = preconf_device;
+ } else {
+ ptr = (GDevPtr)xalloc(sizeof(GDevRec));
+ if (!ptr) {
+ return NULL;
+ }
+ memset((GDevPtr)ptr, 0, sizeof(GDevRec));
+ 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) {
+ ptr->driver = chooseVideoDriver();
+ }
+
+ /* TODO Handle multiple screen sections */
+ if (xf86ConfigLayout.screens && !xf86ConfigLayout.screens->screen->device) {
+ xf86ConfigLayout.screens->screen->device = ptr;
+ ptr->myScreenSection = xf86ConfigLayout.screens->screen;
+ }
+ xf86Msg(X_DEFAULT, "Assigned the driver to the xf86ConfigLayout\n");
+
+ return ptr;
+}
+
+#ifdef __linux__
+/* This function is used to provide a workaround for binary drivers that
+ * don't export their PCI ID's properly. If distros don't end up using this
+ * feature it can and should be removed because the symbol-based resolution
+ * scheme should be the primary one */
+static void
+matchDriverFromFiles (char** matches, uint16_t match_vendor, uint16_t match_chip)
+{
+ DIR *idsdir;
+ FILE *fp;
+ struct dirent *direntry;
+ char *line = NULL;
+ size_t len;
+ ssize_t read;
+ char path_name[256], vendor_str[5], chip_str[5];
+ uint16_t vendor, chip;
+ int i, j;
+
+ idsdir = opendir(PCI_TXT_IDS_PATH);
+ if (!idsdir)
+ return;
+
+ xf86Msg(X_INFO, "Scanning %s directory for additional PCI ID's supported by the drivers\n", PCI_TXT_IDS_PATH);
+ direntry = readdir(idsdir);
+ /* Read the directory */
+ while (direntry) {
+ if (direntry->d_name[0] == '.') {
+ direntry = readdir(idsdir);
+ continue;
+ }
+ len = strlen(direntry->d_name);
+ /* A tiny bit of sanity checking. We should probably do better */
+ if (strncmp(&(direntry->d_name[len-4]), ".ids", 4) == 0) {
+ /* We need the full path name to open the file */
+ strncpy(path_name, PCI_TXT_IDS_PATH, 256);
+ strncat(path_name, "/", 1);
+ strncat(path_name, direntry->d_name, (256 - strlen(path_name) - 1));
+ fp = fopen(path_name, "r");
+ if (fp == NULL) {
+ xf86Msg(X_ERROR, "Could not open %s for reading. Exiting.\n", path_name);
+ goto end;
+ }
+ /* Read the file */
+#ifdef __GLIBC__
+ while ((read = getline(&line, &len, fp)) != -1) {
+#else
+ while ((line = fgetln(fp, &len)) != (char *)NULL) {
+#endif /* __GLIBC __ */
+ xchomp(line);
+ if (isdigit(line[0])) {
+ strncpy(vendor_str, line, 4);
+ vendor_str[4] = '\0';
+ vendor = (int)strtol(vendor_str, NULL, 16);
+ if ((strlen(&line[4])) == 0) {
+ chip_str[0] = '\0';
+ chip = -1;
+ } else {
+ /* Handle trailing whitespace */
+ if (isspace(line[4])) {
+ chip_str[0] = '\0';
+ chip = -1;
+ } else {
+ /* Ok, it's a real ID */
+ strncpy(chip_str, &line[4], 4);
+ chip_str[4] = '\0';
+ chip = (int)strtol(chip_str, NULL, 16);
+ }
+ }
+ if (vendor == match_vendor && chip == match_chip ) {
+ i = 0;
+ while (matches[i]) {
+ i++;
+ }
+ matches[i] = (char*)xalloc(sizeof(char) * strlen(direntry->d_name) - 3);
+ if (!matches[i]) {
+ xf86Msg(X_ERROR, "Could not allocate space for the module name. Exiting.\n");
+ goto end;
+ }
+ /* hack off the .ids suffix. This should guard
+ * against other problems, but it will end up
+ * taking off anything after the first '.' */
+ for (j = 0; j < (strlen(direntry->d_name) - 3) ; j++) {
+ if (direntry->d_name[j] == '.') {
+ matches[i][j] = '\0';
+ break;
+ } else {
+ matches[i][j] = direntry->d_name[j];
+ }
+ }
+ xf86Msg(X_INFO, "Matched %s from file name %s\n", matches[i], direntry->d_name);
+ }
+ } else {
+ /* TODO Handle driver overrides here */
+ }
+ }
+ fclose(fp);
+ }
+ direntry = readdir(idsdir);
+ }
+ end:
+ xfree(line);
+ closedir(idsdir);
+}
+#endif /* __linux__ */
+
+char*
+chooseVideoDriver(void)
+{
+ struct pci_device * info = NULL;
+ struct pci_device_iterator *iter;
+ char *chosen_driver = NULL;
+ int i;
+ char *matches[20]; /* If we have more than 20 drivers we're in trouble */
+
+ for (i=0 ; i<20 ; i++)
+ matches[i] = NULL;
+
+ /* Find the primary device, and get some information about it. */
+ iter = pci_slot_match_iterator_create(NULL);
+ while ((info = pci_device_next(iter)) != NULL) {
+ if (xf86IsPrimaryPci(info)) {
+ break;
+ }
+ }
+
+ pci_iterator_destroy(iter);
+
+ if (!info) {
+ ErrorF("Primary device is not PCI\n");
+ }
+#ifdef __linux__
+ else {
+ matchDriverFromFiles(matches, info->vendor_id, info->device_id);
+ }
+#endif /* __linux__ */
+
+ /* TODO Handle multiple drivers claiming to support the same PCI ID */
+ if (matches[0]) {
+ chosen_driver = matches[0];
+ } else {
+ if (info != NULL)
+ chosen_driver = videoPtrToDriverName(info);
+ if (chosen_driver == NULL) {
+#if defined __i386__ || defined __amd64__ || defined __x86_64__ || defined __hurd__
+ chosen_driver = "vesa";
+#elif defined __sparc__
+ chosen_driver = "sunffb";
+#else
+ chosen_driver = "fbdev";
+#endif
+ }
+ }
+
+ xf86Msg(X_DEFAULT, "Matched %s for the autoconfigured driver\n", chosen_driver);
+
+ i = 0;
+ while (matches[i]) {
+ if (matches[i] != chosen_driver) {
+ xfree(matches[i]);
+ }
+ i++;
+ }
+
+ return chosen_driver;
+}
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