9719354ae0
Spiritual revert of 1fa4de80fc. Intel's C
compiler claims to be gcc-compatible; if they're not defining the same
macros as gcc then that's their bug, not ours. Even if we were to do
this aliasing we should do it once and for all in servermd.h.
479 lines
14 KiB
C
479 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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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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* cyrix/nsc. should be merged into geode anyway.
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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 0x1022:
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if (dev->device_id == 0x2081)
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return "geode";
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else
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return NULL;
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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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return;
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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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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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else {
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matchDriverFromFiles(matches, info->vendor_id, info->device_id);
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}
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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 __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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