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/*
* Functions to manipulate card database.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "cards.h"
/* Some vars to make path names in texts more flexible. */
#ifndef PROJECTROOT
# define PROJECTROOT "/usr"
#endif
#define TREEROOT PROJECTROOT
#define TREEROOTLX TREEROOT "/lib/X11"
#define TREEROOTCFG TREEROOT "/etc/X11"
#ifdef XDOCDIR
# define TREEROOTDOC XDOCDIR
#else
# define TREEROOTDOC TREEROOTLX "/doc"
#endif
/*
* 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;
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 " TREEROOTDOC "/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 " TREEROOTDOC "/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];
strcpy(filename, CARD_DATABASE_FILE);
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);
}
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