1 /* $NetBSD: summitreg.h,v 1.16 2025/01/29 15:35:22 macallan Exp $ */ 2 3 /* 4 * Copyright (c) 2024 Michael Lorenz 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 26 * THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* HP Visualize FX 4 and related hardware, aka Summit */ 30 31 /* 32 * register values, found by disassembling the ROM 33 * some found by Sven Schnelle 34 * ( see https://patchwork.kernel.org/project/linux-parisc/patch/20211031204952.25678-2-svens@stackframe.org/ ) 35 * some by me 36 */ 37 38 #ifndef SUMMITREG_H 39 #define SUMMITREG_H 40 41 #define VISFX_CONTROL 0x641000 42 #define CONTROL_WFC 0x00000200 // FIFO when 0, direct when 1 43 #define VISFX_FC 0x641040 // Fault Control 44 #define VISFX_STATUS 0x641400 // zero when idle 45 /* 46 * about the FIFO register: 47 * - on FX4, there are 0x800 FIFO slots, quite a lot 48 * - based on observation, every register write seems to occupy *two* slots 49 * - we need to write 0 to VISFX_CONTROL to enable FIFO pacing 50 * - the FIFO is quite difficult to overrun but things like x11perf copywinwin 51 * will do it if we're not careful 52 */ 53 #define VISFX_FIFO 0x641440 54 #define VISFX_FOE 0x920404 // Fragment Operation Enable 55 #define FOE_TEXTURE 0x00000001 56 #define FOE_SPECULAR 0x00000002 57 #define FOE_DEPTHCUE 0x00000004 58 #define FOE_ALPHATEST 0x00000008 59 #define FOE_STENCIL 0x00000010 60 #define FOE_Z_TEST 0x00000020 61 #define FOE_BLEND_ROP 0x00000040 // IBO is used 62 #define FOE_DITHER 0x00000080 63 #define VISFX_IBO 0x921110 // ROP in lowest nibble 64 #define VISFX_CBR 0x92111c // constant colour for blending 65 #define VISFX_IAA0 0x921200 // XLUT, 16 entries 66 #define VISFX_IAA(n) (0x921200 + ((n) << 2)) 67 #define VISFX_OTR 0x921148 // overlay transparency 68 69 #define VISFX_VRAM_WRITE_MODE 0xa00808 70 #define VISFX_VRAM_READ_MODE 0xa0080c 71 #define VISFX_PIXEL_MASK 0xa0082c 72 #define VISFX_FG_COLOUR 0xa0083c 73 #define VISFX_BG_COLOUR 0xa00844 74 #define VISFX_PLANE_MASK 0xa0084c 75 /* this controls what we see in the FB aperture */ 76 #define VISFX_APERTURE_ACCESS 0xa00858 77 #define VISFX_DEPTH_8 0x30 78 #define VISFX_DEPTH_32 0x50 79 #define VISFX_RPH 0xa0085c // read prefetch hint 80 #define VISFX_RPH_RTL 0x80000000 // right-to-left 81 #define VISFX_RPH_LTR 0x00000000 // left-to-right 82 83 #define VISFX_READ_DATA 0xa41480 84 85 #define VISFX_VRAM_WRITE_DATA_INCRX 0xa60000 86 #define VISFX_VRAM_WRITE_DATA_INCRY 0xa68000 87 #define VISFX_VRAM_WRITE_DEST 0xac1000 88 #define VISFX_TCR 0xac1024 /* throttle control */ 89 #define VISFX_CLIP_TL 0xac1050 /* clipping rect, top/left */ 90 #define VISFX_CLIP_WH 0xac1054 /* clipping rect, w/h */ 91 92 #define VISFX_WRITE_MODE_PLAIN 0x02000000 93 #define VISFX_WRITE_MODE_EXPAND 0x050004c0 94 #define VISFX_WRITE_MODE_FILL 0x050008c0 95 #define VISFX_WRITE_MODE_TRANSPARENT 0x00000800 /* bg is tansparent */ 96 #define VISFX_WRITE_MODE_MASK 0x00000400 /* apply pixel mask */ 97 /* 0x00000200 - some pattern */ 98 /* looks like 0x000000c0 enables fb/bg colours to be applied */ 99 100 #define VISFX_READ_MODE_COPY 0x02000400 101 102 #define OTC01 0x00000000 /* one pixel per 32bit write */ 103 #define OTC04 0x02000000 /* 4 pixels per 32bit write */ 104 #define OTC32 0x05000000 /* 32 pixels per 32bit write */ 105 #define BIN8I 0x00000000 /* 8bit indexed */ 106 #define BIN12I 0x00010000 /* 12bit indexed */ 107 #define BIN332F 0x00040000 /* R3G3B2 */ 108 #define BIN8F 0x00070000 /* ARGB8 */ 109 #define BINapln 0x00110000 /* attribute plane */ 110 #define BINhost 0x00300000 /* DMA to host */ 111 #define BUFovl 0x00000000 /* 8bit overlay */ 112 #define BUFBL 0x00008000 /* back/left */ 113 #define BUFFL 0x00004000 /* front/left */ 114 #define BUFBR 0x00002000 /* back/right */ 115 #define BUFFR 0x00001000 /* front/right */ 116 117 /* attribute table, this only selects depth and CFS */ 118 #define IAA_8I 0x00000000 /* 8bit CI */ 119 #define IAA_8F 0x00000070 /* RGB8 */ 120 #define IAA_CFS0 0x00000000 /* CFS select */ 121 #define IAA_CFS1 0x00000100 /* CFS 1 etc. */ 122 123 #define OTR_T 0x00010000 /* when set 0 is transparent, otherwise 0xff */ 124 #define OTR_A 0x00000100 /* always transparent */ 125 #define OTR_L1 0x00000002 /* transparency controlled by CFS17 */ 126 #define OTR_L0 0x00000001 /* transparency controlled by CFS16 */ 127 128 /* 129 * for STI colour change mode: 130 * set VISFX_FG_COLOUR, VISFX_BG_COLOUR 131 * set VISFX_VRAM_READ_MODE 0x05000400 132 * set VISFX_VRAM_WRITE_MODE 0x050000c0 133 */ 134 135 /* fill */ 136 #define VISFX_START 0xb3c000 137 #define VISFX_SIZE 0xb3c808 /* start, FX4 uses 0xb3c908 */ 138 139 /* copy */ 140 #define VISFX_COPY_SRC 0xb3c010 141 #define VISFX_COPY_WH 0xb3c008 142 #define VISFX_COPY_DST 0xb3cc00 143 /* 144 * looks like ORing 0x800 to the register address starts a command 145 * - 0x800 - fill 146 * - 0xc00 - copy 147 * 0x100 and 0x200 seem to have functions as well, not sure what though 148 * for example, the FX4 ROM uses 0xb3c908 to start a rectangle fill, but 149 * it also works with 0xb3c808 and 0xb3ca08 150 * same with copy, 0xc00 seems to be what matters, setting 0x100 or 0x200 151 * doesn't seem to make a difference 152 * 0x400 or 0x100 by themselves don't start a command either 153 */ 154 155 /* 156 * alpha blending operations 157 * source and destination blend functions are in 0xf0 and 0x0f 158 * how they're combined is in 0x700 159 */ 160 #define IBO_ROP 0 /* ROP in lower 4 bit */ 161 #define IBO_ADD 0x200 162 #define IBO_S_MINUS_D 0x400 /* source - dest */ 163 #define IBO_D_MINUS_S 0x500 /* dest - source */ 164 #define IBO_MIN 0x600 165 #define IBO_MAX 0x700 166 167 /* 168 * here are the blend functions I identified 169 * apparently the upper byte in 32bit mode is not implemented on FX2/4/6, and 170 * neither is any blend mode that takes the colour value from CBR 171 * so no blending with screen-to-screen blits, alpha will always read zero 172 * the only ways to actually use alpha blending is with fills ( the alpha part 173 * of the FG register is used ) and BINC writes, or when using constant alpha 174 */ 175 #define IBO_ZERO 0 176 #define IBO_ONE 1 177 #define IBO_SRC 4 /* src alpha */ 178 #define IBO_ONE_MINUS_SRC 5 /* 1 - src alpha */ 179 #define IBO_CBR 14 /* alpha from CBR */ 180 #define IBO_ONE_MINUS_CBR 15 /* 1 - alpha from CBR */ 181 182 #define SRC(n) ((n) << 4) 183 #define DST(n) (n) 184 /* 185 * use unbuffered space for cursor registers 186 * The _POS, _INDEX and _DATA registers work exactly like on HCRX 187 */ 188 189 #define VISFX_CURSOR_POS 0x400000 190 #define VISFX_CURSOR_ENABLE 0x80000000 191 #define VISFX_CURSOR_INDEX 0x400004 192 #define VISFX_CURSOR_DATA 0x400008 193 #define VISFX_CURSOR_FG 0x40000c 194 #define VISFX_CURSOR_BG 0x400010 195 #define VISFX_COLOR_MASK 0x800018 196 #define VISFX_COLOR_INDEX 0x800020 197 #define VISFX_COLOR_VALUE 0x800024 198 #define VISFX_FATTR 0x80003c /* force attribute */ 199 #define VISFX_MPC 0x80004c 200 #define MPC_VIDEO_ON 0x0c 201 #define MPC_VSYNC_OFF 0x02 202 #define MPC_HSYNC_OFF 0x01 203 #define VISFX_CFS0 0x800100 /* colour function select */ 204 #define VISFX_CFS(n) (VISFX_CFS0 + ((n) << 2)) 205 /* 0 ... 6 for image planes, 7 or bypass, 16 and 17 for overlay */ 206 #define CFS_CR 0x80 // enable color recovery 207 #define CFS_332 0x00 // R3G3B2 208 #define CFS_8I 0x40 // 8bit indexed 209 #define CFS_8F 0x70 // ARGB8 210 #define CFS_LUT0 0x00 // use LUT 0 211 #define CFS_LUT1 0x01 // LUT 1 etc. 212 #define CFS_BYPASS 0x07 // bypass LUT 213 214 #endif /* SUMMITREG_H */ 215