summaryrefslogtreecommitdiff
path: root/hw/xfree86/utils/xorgconfig/cards.c
blob: d5f405f4a186a2f51a994d4a8d7e5da2417fd42d (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
/* $XConsortium: cards.c /main/9 1996/10/19 18:15:32 kaleb $ */





/* $XFree86: xc/programs/Xserver/hw/xfree86/xf86config/cards.c,v 3.16 2001/07/25 15:05:09 dawes Exp $ */

/*
 *  Functions to manipulate card database.
 */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "cards.h"

/*
 * Database format:
 *
 * NAME <name of card>
 * CHIPSET <chipset description>
 * SERVER <server name>	
 * DRIVER <driver name>
 *
 * Optional keywords:
 * RAMDAC <ramdac identifier>
 * CLOCKCHIP <clockchip identifier>
 * DACSPEED <dacspeed>
 * NOCLOCKPROBE
 * UNSUPPORTED
 *
 * SEE <name of card> refers to another card definition; parameters that
 * are already defined are not overridden.
 *
 * <server name> is one of Mono, VGA16, SVGA, S3, Mach32, Mach8, 8514,
 * P9000, AGX, W32.
 *
 * A useful additional keywords may be CLOCKS.
 */



/* Database vars. */

int lastcard;

Card card[MAX_CARDS];


static int
getnextline(FILE *f, char *l)
{
	if (fgets(l, 128, f) == NULL)
		return -1;
#ifdef __UNIXOS2__
	{
		char *p = strchr(l,'\r');
		if (p) {
			*p = '\n';
			*(p+1) = '\0';
		}
	}
#endif
	return 0;
}

static void
appendstring(char **destp, char *src)
{
	char *newstr;
	newstr = malloc(strlen(*destp) + strlen(src) + 1);
	strcpy(newstr, *destp);
	strcat(newstr, src);
	if (strlen(*destp) > 0)
		free(*destp);
	*destp = newstr;
}

int
lookupcard(char *name) {
	int i;
	for (i = 0; i <= lastcard; i++)
		if (strcmp(name, card[i].name) == 0)
			return i;
	return -1;
}

static char *s3_comment =
"# Use Option \"nolinear\" if the server doesn't start up correctly\n"
"# (this avoids the linear framebuffer probe). If that fails try\n"
"# option \"nomemaccess\".\n"
"#\n"
"# Refer to /usr/X11R6/lib/doc/README.S3, and the XF86_S3 man page.\n";

static char *cirrus_comment =
"# Use Option \"no_bitblt\" if you have graphics problems. If that fails\n"
"# try Option \"noaccel\".\n"
"# Refer to /usr/X11R6/lib/doc/README.cirrus.\n"
"# To allow linear addressing, uncomment the Option line and the\n"
"# address that the card maps the framebuffer to.\n";

int parse_database() {
	FILE *f;
	char buf[128];
	int i, lineno;
	char filename[128];

#ifndef __UNIXOS2__
	strcpy(filename, CARD_DATABASE_FILE);
#else
	strcpy(filename, (char*)__XOS2RedirRoot(CARD_DATABASE_FILE));
#endif
	f = fopen(filename, "r");
	if (f == NULL)
		return -1;

	lastcard = -1;
	lineno = 0;

	for (;;) {
		if (getnextline(f, buf))
			break;
		lineno++;
		if (buf[0] == '#')
			/* Comment. */
			continue;
		if (strncmp(buf, "END", 3) == 0)
			/* End of database. */
			break;
		if (strncmp(buf, "LINE", 4) == 0 && lastcard>=0) {
			/* Line of Device comment. */
			/* Append to existing lines. */
			appendstring(&card[lastcard].lines, buf + 5);
			continue;
		}
		/*
		 * The following keywords require the trailing newline
		 * to be deleted.
		 */
		i = strlen(buf);
		buf[--i] = '\0';

		/* remove trailing spaces or tabs */
		for(--i; i>=0 && (buf[i] == ' ' || buf[i] == '\011'); i--) ;
		if (i>=0)
		   buf[i+1] = '\0';
		else 
		   continue; /* skip empty lines */

		if (strncmp(buf, "NAME", 4) == 0) {
			/* New entry. */
			lastcard++;
			card[lastcard].name = malloc(strlen(buf + 5) + 1);
			strcpy(card[lastcard].name, buf + 5);
			card[lastcard].chipset = NULL;
		        card[lastcard].server = NULL;
			card[lastcard].driver = NULL;
		        card[lastcard].ramdac = NULL;
			card[lastcard].clockchip = NULL;
			card[lastcard].dacspeed = NULL;
			card[lastcard].flags = 0;
			card[lastcard].lines = "";
			continue;
		}
		if (lastcard < 0)  /* no NAME line found yet */
		   continue; 
		if (strncmp(buf, "SEE", 3) == 0) {
			/* Reference to another entry. */
			int i;
			i = lookupcard(buf + 4);
			if (i == -1) {
				printf("Error in database, invalid reference: %s.\n",
					buf + 4);
				free(card[lastcard].name);
				lastcard--;
				continue;
			}
			if (card[lastcard].chipset == NULL)
				card[lastcard].chipset = card[i].chipset;
			if (card[lastcard].server == NULL)
				card[lastcard].server = card[i].server;
			if (card[lastcard].driver == NULL)
				card[lastcard].driver = card[i].driver;
			if (card[lastcard].ramdac == NULL)
				card[lastcard].ramdac = card[i].ramdac;
			if (card[lastcard].clockchip == NULL)
				card[lastcard].clockchip = card[i].clockchip;
			if (card[lastcard].dacspeed == NULL)
				card[lastcard].dacspeed = card[i].dacspeed;
			card[lastcard].flags |= card[i].flags;
			appendstring(&card[lastcard].lines, card[i].lines);
			continue;
		}
		if (strncmp(buf, "CHIPSET", 7) == 0) {
			/* Chipset description. */
			card[lastcard].chipset = malloc(strlen(buf + 8) + 1);
			strcpy(card[lastcard].chipset, buf + 8);
			continue;
		}
		if (strncmp(buf, "SERVER", 6) == 0) {
			/* Server identifier. */
			card[lastcard].server = malloc(strlen(buf + 7) + 1);
			strcpy(card[lastcard].server, buf + 7);
			continue;
		}
		if (strncmp(buf, "DRIVER", 6) == 0) {
			/* Driver identifier. */
			card[lastcard].driver = malloc(strlen(buf + 7) + 1);
			strcpy(card[lastcard].driver, buf + 7);
			continue;
		}
		if (strncmp(buf, "RAMDAC", 6) == 0) {
			/* Ramdac indentifier. */
			card[lastcard].ramdac = malloc(strlen(buf + 7) + 1);
			strcpy(card[lastcard].ramdac, buf + 7);
			continue;
		}
		if (strncmp(buf, "CLOCKCHIP", 9) == 0) {
			/* Clockchip indentifier. */
			card[lastcard].clockchip = malloc(strlen(buf + 10) + 1);
			strcpy(card[lastcard].clockchip, buf + 10);
			card[lastcard].flags |= NOCLOCKPROBE;
			continue;
		}
		if (strncmp(buf, "DACSPEED", 8) == 0) {
			/* Clockchip indentifier. */
			card[lastcard].dacspeed = malloc(strlen(buf + 9) + 1);
			strcpy(card[lastcard].dacspeed, buf + 9);
			continue;
		}
		if (strncmp(buf, "NOCLOCKPROBE", 12) == 0) {
			card[lastcard].flags |= NOCLOCKPROBE;
			continue;
		}
		if (strncmp(buf, "UNSUPPORTED", 12) == 0) {
			card[lastcard].flags |= UNSUPPORTED;
			continue;
		}
		/* test for missing required fields */
		if (card[lastcard].driver == NULL) {
		    fprintf(stderr, "Warning DRIVER specification missing "
			    "in Card database entry %s (line %d).\n", 
			    card[lastcard].name, lineno);
		    keypress();
		       card[lastcard].driver = "unknown";
		}
		if (card[lastcard].chipset == NULL) {
		    fprintf(stderr, "Warning CHIPSET specification missing "
			    "in Card database entry %s (line %d).\n", 
			    card[lastcard].name, lineno);
		    keypress();
		    card[lastcard].chipset = "unknown";
		}
	    }

	fclose(f);

	/*
	 * Add general comments.
	 */
	for (i = 0; i <= lastcard; i++) {
		if (card[i].server && strcmp(card[i].server, "S3") == 0)
			appendstring(&card[i].lines, s3_comment);
		if (card[i].chipset && 
		    strncmp(card[i].chipset, "CL-GD", 5) == 0)
			appendstring(&card[i].lines, cirrus_comment);
	}

	sort_database();

	return 0;
}

static int
compare_card(const void *e1, const void *e2)
{
	return strcmp(((Card *)e1)->name, ((Card *)e2)->name);
}

void
sort_database() {
	/* Each element is a bunch of words, but nothing too bad. */
	qsort(card, lastcard + 1, sizeof(Card), compare_card);
}