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/* $OpenBSD: tga_conf.c,v 1.3 1996/10/30 22:40:22 niklas Exp $ */
/* $NetBSD: tga_conf.c,v 1.2 1996/04/12 06:09:18 cgd Exp $ */
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <dev/pci/pcivar.h>
#include <machine/tgareg.h>
#include <alpha/pci/tgavar.h>
#undef KB
#define KB * 1024
#undef MB
#define MB * 1024 * 1024
static const struct tga_conf tga_configs[TGA_TYPE_UNKNOWN] = {
/* TGA_TYPE_T8_01 */
{
"T8-01",
&tga_ramdac_bt485,
8,
4 MB,
2 KB,
1, { 2 MB, 0 }, { 1 MB, 0 },
0, { 0, 0 }, { 0, 0 },
},
/* TGA_TYPE_T8_02 */
{
"T8-02",
&tga_ramdac_bt485,
8,
4 MB,
4 KB,
1, { 2 MB, 0 }, { 2 MB, 0 },
0, { 0, 0 }, { 0, 0 },
},
/* TGA_TYPE_T8_22 */
{
"T8-22",
&tga_ramdac_bt485,
8,
8 MB,
4 KB,
1, { 4 MB, 0 }, { 2 MB, 0 },
1, { 6 MB, 0 }, { 2 MB, 0 },
},
/* TGA_TYPE_T8_44 */
{
"T8-44",
&tga_ramdac_bt485,
8,
16 MB,
4 KB,
2, { 8 MB, 12 MB }, { 2 MB, 2 MB },
2, { 10 MB, 14 MB }, { 2 MB, 2 MB },
},
/* TGA_TYPE_T32_04 */
{
"T32-04",
&tga_ramdac_bt463,
32,
16 MB,
8 KB,
1, { 8 MB, 0 }, { 4 MB, 0 },
0, { 0, 0 }, { 0, 0 },
},
/* TGA_TYPE_T32_08 */
{
"T32-08",
&tga_ramdac_bt463,
32,
16 MB,
16 KB,
1, { 8 MB, 0 }, { 8 MB, 0 },
0, { 0, 0 }, { 0, 0 },
},
/* TGA_TYPE_T32_88 */
{
"T32-88",
&tga_ramdac_bt463,
32,
32 MB,
16 KB,
1, { 16 MB, 0 }, { 8 MB, 0 },
1, { 24 MB, 0 }, { 8 MB, 0 },
},
};
#undef KB
#undef MB
int
tga_identify(regs)
tga_reg_t *regs;
{
int type;
int deep, addrmask, wide;
deep = (regs[TGA_REG_GDER] & 0x1) != 0; /* XXX */
addrmask = ((regs[TGA_REG_GDER] >> 2) & 0x7); /* XXX */
wide = (regs[TGA_REG_GDER] & 0x200) == 0; /* XXX */
type = TGA_TYPE_UNKNOWN;
if (!deep) {
/* 8bpp frame buffer */
if (addrmask == 0x0) {
/* 4MB core map; T8-01 or T8-02 */
if (!wide)
type = TGA_TYPE_T8_01;
else
type = TGA_TYPE_T8_02;
} else if (addrmask == 0x1) {
/* 8MB core map; T8-22 */
if (wide) /* sanity */
type = TGA_TYPE_T8_22;
} else if (addrmask == 0x3) {
/* 16MB core map; T8-44 */
if (wide) /* sanity */
type = TGA_TYPE_T8_44;
}
} else {
/* 32bpp frame buffer */
if (addrmask == 0x3) {
/* 16MB core map; T32-04 or T32-08 */
if (!wide)
type = TGA_TYPE_T32_04;
else
type = TGA_TYPE_T32_08;
} else if (addrmask == 0x7) {
/* 32MB core map; T32-88 */
if (wide) /* sanity */
type = TGA_TYPE_T32_88;
}
}
return (type);
}
const struct tga_conf *
tga_getconf(type)
int type;
{
if (type >= 0 && type < TGA_TYPE_UNKNOWN)
return &tga_configs[type];
return (NULL);
}
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