475 lines
14 KiB
C
475 lines
14 KiB
C
/*
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* Copyright 2003 by David H. Dawes.
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* Copyright 2003 by X-Oz Technologies.
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of the copyright holder(s)
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* and author(s) shall not be used in advertising or otherwise to promote
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* the sale, use or other dealings in this Software without prior written
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* authorization from the copyright holder(s) and author(s).
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*
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* Author: David Dawes <dawes@XFree86.Org>.
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include "xf86.h"
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#include "xf86Parser.h"
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#include "xf86tokens.h"
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#include "xf86Config.h"
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#include "xf86Priv.h"
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#include "xf86_OSlib.h"
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#include "dirent.h"
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/* Sections for the default built-in configuration. */
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#define BUILTIN_DEVICE_NAME \
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"\"Builtin Default %s Device %d\""
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#define BUILTIN_DEVICE_SECTION_PRE \
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"Section \"Device\"\n" \
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"\tIdentifier\t" BUILTIN_DEVICE_NAME "\n" \
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"\tDriver\t\"%s\"\n"
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#define BUILTIN_DEVICE_SECTION_POST \
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"EndSection\n\n"
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#define BUILTIN_DEVICE_SECTION \
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BUILTIN_DEVICE_SECTION_PRE \
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BUILTIN_DEVICE_SECTION_POST
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#define BUILTIN_SCREEN_NAME \
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"\"Builtin Default %s Screen %d\""
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#define BUILTIN_SCREEN_SECTION \
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"Section \"Screen\"\n" \
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"\tIdentifier\t" BUILTIN_SCREEN_NAME "\n" \
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"\tDevice\t" BUILTIN_DEVICE_NAME "\n" \
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"EndSection\n\n"
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#define BUILTIN_LAYOUT_SECTION_PRE \
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"Section \"ServerLayout\"\n" \
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"\tIdentifier\t\"Builtin Default Layout\"\n"
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#define BUILTIN_LAYOUT_SCREEN_LINE \
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"\tScreen\t" BUILTIN_SCREEN_NAME "\n"
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#define BUILTIN_LAYOUT_SECTION_POST \
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"EndSection\n\n"
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static const char **builtinConfig = NULL;
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static int builtinLines = 0;
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static const char *deviceList[] = {
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"fbdev",
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"vesa",
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"vga",
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NULL
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};
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/*
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* A built-in config file is stored as an array of strings, with each string
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* representing a single line. AppendToConfig() breaks up the string "s"
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* into lines, and appends those lines it to builtinConfig.
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*/
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static void
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AppendToList(const char *s, const char ***list, int *lines)
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{
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char *str, *newstr, *p;
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str = xnfstrdup(s);
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for (p = strtok(str, "\n"); p; p = strtok(NULL, "\n")) {
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(*lines)++;
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*list = xnfrealloc(*list, (*lines + 1) * sizeof(**list));
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newstr = xnfalloc(strlen(p) + 2);
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strcpy(newstr, p);
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strcat(newstr, "\n");
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(*list)[*lines - 1] = newstr;
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(*list)[*lines] = NULL;
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}
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xfree(str);
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}
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static void
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FreeList(const char ***list, int *lines)
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{
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int i;
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for (i = 0; i < *lines; i++) {
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if ((*list)[i])
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xfree((*list)[i]);
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}
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xfree(*list);
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*list = NULL;
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*lines = 0;
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}
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static void
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FreeConfig(void)
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{
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FreeList(&builtinConfig, &builtinLines);
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}
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static void
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AppendToConfig(const char *s)
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{
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AppendToList(s, &builtinConfig, &builtinLines);
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}
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static const char *
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videoPtrToDriverName(struct pci_device *dev)
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{
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/*
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* things not handled yet:
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* amd/cyrix/nsc
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* xgi
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*/
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switch (dev->vendor_id)
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{
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case 0x1142: return "apm";
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case 0xedd8: return "ark";
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case 0x1a03: return "ast";
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case 0x1002: return "ati";
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case 0x102c: return "chips";
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case 0x1013: return "cirrus";
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case 0x8086:
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if ((dev->device_id == 0x00d1) || (dev->device_id == 0x7800))
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return "i740";
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else return "intel";
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case 0x102b: return "mga";
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case 0x10c8: return "neomagic";
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case 0x105d: return "i128";
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case 0x10de: case 0x12d2: return "nv";
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case 0x1163: return "rendition";
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case 0x5333:
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switch (dev->device_id)
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{
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case 0x88d0: case 0x88d1: case 0x88f0: case 0x8811:
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case 0x8812: case 0x8814: case 0x8901:
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return "s3";
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case 0x5631: case 0x883d: case 0x8a01: case 0x8a10:
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case 0x8c01: case 0x8c03: case 0x8904: case 0x8a13:
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return "s3virge";
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default:
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return "savage";
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}
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case 0x1039: return "sis";
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case 0x126f: return "siliconmotion";
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case 0x121a:
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if (dev->device_id < 0x0003)
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return "voodoo";
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else
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return "tdfx";
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case 0x3d3d: return "glint";
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case 0x1023: return "trident";
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case 0x100c: return "tseng";
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case 0x1106: return "openchrome";
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case 0x15ad: return "vmware";
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default: break;
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}
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return NULL;
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}
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Bool
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xf86AutoConfig(void)
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{
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const char **p;
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char buf[1024];
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const char *driver = NULL;
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ConfigStatus ret;
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driver = chooseVideoDriver();
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if (driver) {
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snprintf(buf, sizeof(buf), BUILTIN_DEVICE_SECTION_PRE,
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driver, 0, driver);
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AppendToConfig(buf);
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ErrorF("New driver is \"%s\"\n", driver);
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buf[0] = '\t';
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AppendToConfig(BUILTIN_DEVICE_SECTION_POST);
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snprintf(buf, sizeof(buf), BUILTIN_SCREEN_SECTION,
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driver, 0, driver, 0);
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AppendToConfig(buf);
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}
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for (p = deviceList; *p; p++) {
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snprintf(buf, sizeof(buf), BUILTIN_DEVICE_SECTION, *p, 0, *p);
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AppendToConfig(buf);
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snprintf(buf, sizeof(buf), BUILTIN_SCREEN_SECTION, *p, 0, *p, 0);
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AppendToConfig(buf);
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}
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AppendToConfig(BUILTIN_LAYOUT_SECTION_PRE);
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if (driver) {
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snprintf(buf, sizeof(buf), BUILTIN_LAYOUT_SCREEN_LINE, driver, 0);
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AppendToConfig(buf);
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}
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for (p = deviceList; *p; p++) {
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snprintf(buf, sizeof(buf), BUILTIN_LAYOUT_SCREEN_LINE, *p, 0);
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AppendToConfig(buf);
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}
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AppendToConfig(BUILTIN_LAYOUT_SECTION_POST);
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xf86MsgVerb(X_DEFAULT, 0,
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"Using default built-in configuration (%d lines)\n",
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builtinLines);
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xf86MsgVerb(X_DEFAULT, 3, "--- Start of built-in configuration ---\n");
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for (p = builtinConfig; *p; p++)
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xf86ErrorFVerb(3, "\t%s", *p);
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xf86MsgVerb(X_DEFAULT, 3, "--- End of built-in configuration ---\n");
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xf86setBuiltinConfig(builtinConfig);
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ret = xf86HandleConfigFile(TRUE);
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FreeConfig();
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if (ret != CONFIG_OK)
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xf86Msg(X_ERROR, "Error parsing the built-in default configuration.\n");
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return (ret == CONFIG_OK);
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}
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int
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xchomp(char *line)
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{
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size_t len = 0;
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if (!line) {
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return 1;
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}
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len = strlen(line);
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if (line[len - 1] == '\n' && len > 0) {
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line[len - 1] = '\0';
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}
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return 0;
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}
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GDevPtr
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autoConfigDevice(GDevPtr preconf_device)
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{
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GDevPtr ptr = NULL;
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if (!xf86configptr) {
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return NULL;
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}
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/* If there's a configured section with no driver chosen, use it */
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if (preconf_device) {
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ptr = preconf_device;
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} else {
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ptr = (GDevPtr)xalloc(sizeof(GDevRec));
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if (!ptr) {
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return NULL;
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}
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memset((GDevPtr)ptr, 0, sizeof(GDevRec));
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ptr->chipID = -1;
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ptr->chipRev = -1;
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ptr->irq = -1;
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ptr->active = TRUE;
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ptr->claimed = FALSE;
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ptr->identifier = "Autoconfigured Video Device";
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ptr->driver = NULL;
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}
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if (!ptr->driver) {
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ptr->driver = chooseVideoDriver();
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}
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/* TODO Handle multiple screen sections */
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if (xf86ConfigLayout.screens && !xf86ConfigLayout.screens->screen->device) {
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xf86ConfigLayout.screens->screen->device = ptr;
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ptr->myScreenSection = xf86ConfigLayout.screens->screen;
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}
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xf86Msg(X_DEFAULT, "Assigned the driver to the xf86ConfigLayout\n");
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return ptr;
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}
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#ifdef __linux__
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/* This function is used to provide a workaround for binary drivers that
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* don't export their PCI ID's properly. If distros don't end up using this
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* feature it can and should be removed because the symbol-based resolution
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* scheme should be the primary one */
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static void
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matchDriverFromFiles (char** matches, uint16_t match_vendor, uint16_t match_chip)
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{
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DIR *idsdir;
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FILE *fp;
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struct dirent *direntry;
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char *line = NULL;
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size_t len;
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ssize_t read;
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char path_name[256], vendor_str[5], chip_str[5];
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uint16_t vendor, chip;
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int i, j;
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idsdir = opendir(PCI_TXT_IDS_PATH);
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if (idsdir) {
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xf86Msg(X_INFO, "Scanning %s directory for additional PCI ID's supported by the drivers\n", PCI_TXT_IDS_PATH);
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direntry = readdir(idsdir);
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/* Read the directory */
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while (direntry) {
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if (direntry->d_name[0] == '.') {
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direntry = readdir(idsdir);
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continue;
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}
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len = strlen(direntry->d_name);
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/* A tiny bit of sanity checking. We should probably do better */
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if (strncmp(&(direntry->d_name[len-4]), ".ids", 4) == 0) {
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/* We need the full path name to open the file */
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strncpy(path_name, PCI_TXT_IDS_PATH, 256);
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strncat(path_name, "/", 1);
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strncat(path_name, direntry->d_name, (256 - strlen(path_name) - 1));
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fp = fopen(path_name, "r");
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if (fp == NULL) {
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xf86Msg(X_ERROR, "Could not open %s for reading. Exiting.\n", path_name);
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goto end;
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}
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/* Read the file */
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#ifdef __GLIBC__
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while ((read = getline(&line, &len, fp)) != -1) {
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#else
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while ((line = fgetln(fp, &len)) != (char *)NULL) {
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#endif /* __GLIBC __ */
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xchomp(line);
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if (isdigit(line[0])) {
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strncpy(vendor_str, line, 4);
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vendor_str[4] = '\0';
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vendor = (int)strtol(vendor_str, NULL, 16);
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if ((strlen(&line[4])) == 0) {
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chip_str[0] = '\0';
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chip = -1;
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} else {
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/* Handle trailing whitespace */
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if (isspace(line[4])) {
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chip_str[0] = '\0';
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chip = -1;
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} else {
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/* Ok, it's a real ID */
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strncpy(chip_str, &line[4], 4);
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chip_str[4] = '\0';
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chip = (int)strtol(chip_str, NULL, 16);
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}
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}
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if (vendor == match_vendor && chip == match_chip ) {
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i = 0;
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while (matches[i]) {
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i++;
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}
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matches[i] = (char*)xalloc(sizeof(char) * strlen(direntry->d_name) - 3);
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if (!matches[i]) {
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xf86Msg(X_ERROR, "Could not allocate space for the module name. Exiting.\n");
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goto end;
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}
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/* hack off the .ids suffix. This should guard
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* against other problems, but it will end up
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* taking off anything after the first '.' */
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for (j = 0; j < (strlen(direntry->d_name) - 3) ; j++) {
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if (direntry->d_name[j] == '.') {
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matches[i][j] = '\0';
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break;
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} else {
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matches[i][j] = direntry->d_name[j];
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}
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}
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xf86Msg(X_INFO, "Matched %s from file name %s\n", matches[i], direntry->d_name);
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}
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} else {
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/* TODO Handle driver overrides here */
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}
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}
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fclose(fp);
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}
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direntry = readdir(idsdir);
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}
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}
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end:
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xfree(line);
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closedir(idsdir);
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}
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#endif /* __linux__ */
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char*
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chooseVideoDriver(void)
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{
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struct pci_device * info = NULL;
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struct pci_device_iterator *iter;
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char *chosen_driver = NULL;
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int i;
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char *matches[20]; /* If we have more than 20 drivers we're in trouble */
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for (i=0 ; i<20 ; i++)
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matches[i] = NULL;
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/* Find the primary device, and get some information about it. */
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iter = pci_slot_match_iterator_create(NULL);
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while ((info = pci_device_next(iter)) != NULL) {
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if (xf86IsPrimaryPci(info)) {
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break;
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}
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}
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pci_iterator_destroy(iter);
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if (!info) {
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ErrorF("Primary device is not PCI\n");
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}
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#ifdef __linux__
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matchDriverFromFiles(matches, info->vendor_id, info->device_id);
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#endif /* __linux__ */
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/* TODO Handle multiple drivers claiming to support the same PCI ID */
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if (matches[0]) {
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chosen_driver = matches[0];
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} else {
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if (info != NULL)
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chosen_driver = videoPtrToDriverName(info);
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if (chosen_driver == NULL) {
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#if defined __i386__ || defined __amd64__ || defined __hurd__
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chosen_driver = "vesa";
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#elif defined __alpha__
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chosen_driver = "vga";
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#elif defined __sparc__
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chosen_driver = "sunffb";
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#else
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chosen_driver = "fbdev";
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#endif
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}
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}
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xf86Msg(X_DEFAULT, "Matched %s for the autoconfigured driver\n", chosen_driver);
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i = 0;
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while (matches[i]) {
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if (matches[i] != chosen_driver) {
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xfree(matches[i]);
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}
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i++;
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}
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return chosen_driver;
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}
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