cgsixreg.h revision 1.4.24.3
1 /* $NetBSD: cgsixreg.h,v 1.4.24.3 2004/09/21 13:33:26 skrll Exp $ */ 2 3 /* 4 * Copyright (c) 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)cgsixreg.h 8.4 (Berkeley) 1/21/94 41 */ 42 43 /* 44 * CG6 display registers. (Note, I got tired of writing `cgsix' about 45 * halfway through and changed everything to cg6, but I probably missed 46 * some. Unfortunately, the way config works, we need to spell out `six' 47 * in some places anyway.) 48 * 49 * The cg6 is a complicated beastie. We have been unable to extract any 50 * documentation and most of the following are guesses based on a limited 51 * amount of reverse engineering. 52 * 53 * A cg6 is composed of numerous groups of control registers, all with TLAs: 54 * FBC - frame buffer control? 55 * FHC - fbc hardware configuration / control? register (32 bits) 56 * DHC - ??? 57 * TEC - transform engine control? 58 * THC - TEC Hardware Configuration 59 * ROM - a 64Kbyte ROM with who knows what in it. 60 * colormap - see below 61 * frame buffer memory (video RAM) 62 * possible other stuff 63 * 64 * Like the cg3, the cg6 uses a Brooktree Video DAC (see btreg.h). 65 * 66 * Various revisions of the cgsix have various hardware bugs. So far, 67 * we have only seen rev 1 & 2. 68 */ 69 70 /* Control register banks offsets */ 71 #define CGSIX_ROM_OFFSET 0x000000 72 #define CGSIX_BT_OFFSET 0x200000 73 #define CGSIX_DHC_OFFSET 0x240000 74 #define CGSIX_ALT_OFFSET 0x280000 75 #define CGSIX_FHC_OFFSET 0x300000 76 #define CGSIX_THC_OFFSET 0x301000 77 #define CGSIX_FBC_OFFSET 0x700000 78 #define CGSIX_TEC_OFFSET 0x701000 79 #define CGSIX_RAM_OFFSET 0x800000 80 81 /* bits in FHC register */ 82 #define FHC_FBID_MASK 0xff000000 /* bits 24..31 are frame buffer ID */ 83 #define FHC_FBID_SHIFT 24 84 #define FHC_REV_MASK 0x00f00000 /* bits 20..23 are revision */ 85 #define FHC_REV_SHIFT 20 86 #define FHC_FROP_DISABLE 0x00080000 /* disable fast/font? rasterops */ 87 #define FHC_ROW_DISABLE 0x00040000 /* ??? */ 88 #define FHC_SRC_DISABLE 0x00020000 /* ??? */ 89 #define FHC_DST_DISABLE 0x00010000 /* disable destination cache */ 90 #define FHC_RESET 0x00008000 /* ??? */ 91 #define FHC_XXX0 0x00004000 /* ??? */ 92 #define FHC_LEBO 0x00002000 /* set little endian byte order? */ 93 #define FHC_RES_MASK 0x00001800 /* bits 11&12 are resolution */ 94 #define FHC_RES_1024 0x00000000 /* res = 1024x768 */ 95 #define FHC_RES_1152 0x00000800 /* res = 1152x900 */ 96 #define FHC_RES_1280 0x00001000 /* res = 1280x1024 */ 97 #define FHC_RES_1600 0x00001800 /* res = 1600x1200 */ 98 #define FHC_CPU_MASK 0x00000600 /* bits 9&10 are cpu type */ 99 #define FHC_CPU_SPARC 0x00000000 /* cpu = sparc */ 100 #define FHC_CPU_68020 0x00000200 /* cpu = 68020 */ 101 #define FHC_CPU_386 0x00000400 /* cpu = 80386 */ 102 #define FHC_CPU_XXX 0x00000600 /* ??? */ 103 #define FHC_TEST 0x00000100 /* ??? test window ??? */ 104 #define FHC_TESTX_MASK 0x000000f0 /* bits 4..7 are test window X */ 105 #define FHC_TESTX_SHIFT 4 106 #define FHC_TESTY_MASK 0x0000000f /* bits 0..3 are test window Y */ 107 #define FHC_TESTY_SHIFT 0 108 109 /* 110 * The layout of the THC. 111 */ 112 struct cg6_thc { 113 u_int32_t thc_xxx0[512]; /* ??? */ 114 u_int32_t thc_hsync1; /* horizontal sync timing */ 115 u_int32_t thc_hsync2; /* more hsync timing */ 116 u_int32_t thc_hsync3; /* yet more hsync timing */ 117 u_int32_t thc_vsync1; /* vertical sync timing */ 118 u_int32_t thc_vsync2; /* only two of these */ 119 u_int32_t thc_refresh; /* refresh counter */ 120 u_int32_t thc_misc; /* miscellaneous control & status */ 121 u_int32_t thc_xxx1[56]; /* ??? */ 122 u_int32_t thc_cursxy; /* cursor x,y position (16 bits each) */ 123 u_int32_t thc_cursmask[32];/* cursor mask bits */ 124 u_int32_t thc_cursbits[32];/* what to show where mask enabled */ 125 }; 126 127 /* bits in thc_misc */ 128 #define THC_MISC_XXX0 0xfff00000 /* unused */ 129 #define THC_MISC_REVMASK 0x000f0000 /* cg6 revision? */ 130 #define THC_MISC_REVSHIFT 16 131 #define THC_MISC_XXX1 0x0000e000 /* unused */ 132 #define THC_MISC_RESET 0x00001000 /* ??? */ 133 #define THC_MISC_XXX2 0x00000800 /* unused */ 134 #define THC_MISC_VIDEN 0x00000400 /* video enable */ 135 #define THC_MISC_SYNC 0x00000200 /* not sure what ... */ 136 #define THC_MISC_VSYNC 0x00000100 /* ... these really are */ 137 #define THC_MISC_SYNCEN 0x00000080 /* sync enable */ 138 #define THC_MISC_CURSRES 0x00000040 /* cursor resolution */ 139 #define THC_MISC_INTEN 0x00000020 /* v.retrace intr enable */ 140 #define THC_MISC_INTR 0x00000010 /* intr pending / ack bit */ 141 #define THC_MISC_XXX 0x0000000f /* ??? */ 142 143 /* cursor x / y position value for `off' */ 144 #define THC_CURSOFF (65536-32) /* i.e., USHRT_MAX+1-32 */ 145 146 /* 147 * Partial description of TEC (needed to get around FHC rev 1 bugs). 148 */ 149 struct cg6_tec_xxx { 150 u_int32_t tec_mv; /* matrix stuff */ 151 u_int32_t tec_clip; /* clipping stuff */ 152 u_int32_t tec_vdc; /* ??? */ 153 }; 154 155 /* 156 * Partial description of FBC 157 * 158 * Most of this we don't care about; here are only the portions 159 * we need, most notably the blitter. Comments are merely my 160 * best guesses as to register functions, based largely on the 161 * X11R6.4 sunGX code. Some of these are here only so we can 162 * stuff canned values in them (eg, offx). 163 */ 164 struct cg6_fbc { 165 u_int32_t fbc_pad1[1]; 166 u_int32_t fbc_mode; /* mode setting */ 167 u_int32_t fbc_clip; /* function unknown */ 168 u_int32_t fbc_pad2[1]; 169 u_int32_t fbc_s; /* global status */ 170 u_int32_t fbc_draw; /* drawing pipeline status */ 171 u_int32_t fbc_blit; /* blitter status */ 172 u_int32_t fbc_pad3[25]; 173 u_int32_t fbc_x0; /* blitter, src llx */ 174 u_int32_t fbc_y0; /* blitter, src lly */ 175 u_int32_t fbc_pad4[2]; 176 u_int32_t fbc_x1; /* blitter, src urx */ 177 u_int32_t fbc_y1; /* blitter, src ury */ 178 u_int32_t fbc_pad5[2]; 179 u_int32_t fbc_x2; /* blitter, dst llx */ 180 u_int32_t fbc_y2; /* blitter, dst lly */ 181 u_int32_t fbc_pad6[2]; 182 u_int32_t fbc_x3; /* blitter, dst urx */ 183 u_int32_t fbc_y3; /* blitter, dst ury */ 184 u_int32_t fbc_pad7[2]; 185 u_int32_t fbc_offx; /* x offset for drawing */ 186 u_int32_t fbc_offy; /* y offset for drawing */ 187 u_int32_t fbc_pad8[6]; 188 u_int32_t fbc_clipminx; /* clip rectangle llx */ 189 u_int32_t fbc_clipminy; /* clip rectangle lly */ 190 u_int32_t fbc_pad9[2]; 191 u_int32_t fbc_clipmaxx; /* clip rectangle urx */ 192 u_int32_t fbc_clipmaxy; /* clip rectangle ury */ 193 u_int32_t fbc_pad10[2]; 194 u_int32_t fbc_fg; /* fg value for rop */ 195 u_int32_t fbc_pad11[1]; 196 u_int32_t fbc_alu; /* operation to be performed */ 197 u_int32_t fbc_pad12[509]; 198 u_int32_t fbc_arectx; /* rectangle drawing, x coord */ 199 u_int32_t fbc_arecty; /* rectangle drawing, y coord */ 200 /* actually much more, but nothing more we need */ 201 }; 202 203 #if _CG6_LAYOUT_NOT_USED_ANYMORE 204 /* 205 * This structure exists only to compute the layout of the CG6 206 * hardware. Each of the individual substructures lives on a 207 * separate `page' (where a `page' is at least 4K), and many are 208 * very far apart. We avoid large offsets (which make for lousy 209 * code) by using pointers to the individual interesting pieces, 210 * and map them in independently (to avoid using up PTEs unnecessarily). 211 */ 212 struct cg6_layout { 213 /* ROM at 0 */ 214 union { 215 int un_id; /* ID = ?? */ 216 char un_rom[65536]; /* 64K rom */ 217 char un_pad[0x200000]; 218 } cg6_rom_un; 219 220 /* Brooktree DAC at 0x200000 */ 221 union { 222 struct bt_regs un_btregs; 223 char un_pad[0x040000]; 224 } cg6_bt_un; 225 226 /* DHC, whatever that is, at 0x240000 */ 227 union { 228 char un_pad[0x40000]; 229 } cg6_dhc_un; 230 231 /* ALT, whatever that is, at 0x280000 */ 232 union { 233 char un_pad[0x80000]; 234 } cg6_alt_un; 235 236 /* FHC register at 0x300000 */ 237 union { 238 int un_fhc; 239 char un_pad[0x1000]; 240 } cg6_fhc_un; 241 242 /* THC at 0x301000 */ 243 union { 244 struct cg6_thc un_thc; 245 char un_pad[0x400000 - 0x1000]; 246 } cg6_thc_un; 247 248 /* FBC at 0x700000 */ 249 union { 250 char un_pad[0x1000]; 251 } cg6_fbc_un; 252 253 /* TEC at 0x701000 */ 254 union { 255 char un_pad[0x100000 - 0x1000]; 256 struct cg6_tec_xxx un_tec; 257 } cg6_tec_un; 258 259 /* Video RAM at 0x800000 */ 260 char cg6_ram[1024 * 1024]; /* approx.? */ 261 }; 262 #endif 263
Indexes created Sun Oct 19 21:10:07 GMT 2025