aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/hw/xfree86/common/xf86AutoConfig.c
blob: 0c465682a13a24025f095b44d7ead8360e1563da (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
/*
 * 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
    }

#if !defined(sun)
    /* 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
    }
#endif /* !sun */
}

/* 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;
}