diff options
Diffstat (limited to 'sys/arch/alpha/pci/tga_conf.c')
| -rw-r--r-- | sys/arch/alpha/pci/tga_conf.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/sys/arch/alpha/pci/tga_conf.c b/sys/arch/alpha/pci/tga_conf.c new file mode 100644 index 00000000000..114e6964789 --- /dev/null +++ b/sys/arch/alpha/pci/tga_conf.c @@ -0,0 +1,183 @@ +/* $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); +} + |