1 /* $NetBSD: sticreg.h,v 1.9 2008/09/08 23:36:54 gmcgarry Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _TC_STICREG_H_ 33 #define _TC_STICREG_H_ 34 35 /* 36 * PixelStamp command packets take this general format: 37 * 38 * command word 39 * plane mask & primitive count 40 * always zero 41 * update method 42 * 43 * per-packet context (optional): 44 * line width 45 * xy mask 46 * cliping rectangle min & max 47 * rgb constant 48 * z constant 49 * 50 * per-primitive context (optional): 51 * xy mask 52 * xy mask address 53 * primitive data (vertices, spans info, video) 54 * line width 55 * halfspace equals conditions 56 * rgb flat, or rgb{1,2,3} smooth 57 * z flat, or z{1,2,3} smooth 58 */ 59 60 /* 61 * Command word. 62 */ 63 64 /* Base command */ 65 #define STAMP_CMD_POINTS (0x0000) 66 #define STAMP_CMD_LINES (0x0001) 67 #define STAMP_CMD_TRIANGLES (0x0002) 68 #define STAMP_CMD_COPYSPANS (0x0005) 69 #define STAMP_CMD_READSPANS (0x0006) 70 #define STAMP_CMD_WRITESPANS (0x0007) 71 #define STAMP_CMD_VIDEO (0x0008) 72 73 /* Color */ 74 #define STAMP_RGB_NONE (0x0000) 75 #define STAMP_RGB_CONST (0x0010) 76 #define STAMP_RGB_FLAT (0x0020) 77 #define STAMP_RGB_SMOOTH (0x0030) 78 79 /* Z */ 80 #define STAMP_Z_NONE (0x0000) 81 #define STAMP_Z_CONST (0x0040) 82 #define STAMP_Z_FLAT (0x0080) 83 #define STAMP_Z_SMOOTH (0x00c0) 84 85 /* XYMASK */ 86 #define STAMP_XY_NONE (0x0000) 87 #define STAMP_XY_PERPACKET (0x0100) 88 #define STAMP_XY_PERPRIMATIVE (0x0200) 89 90 /* Line width */ 91 #define STAMP_LW_NONE (0x0000) 92 #define STAMP_LW_PERPACKET (0x0400) 93 #define STAMP_LW_PERPRIMATIVE (0x0800) 94 95 /* Miscellaneous flags */ 96 #define STAMP_CLIPRECT (0x00080000) 97 #define STAMP_MESH (0x00200000) 98 #define STAMP_AALINE (0x00800000) 99 #define STAMP_HS_EQUALS (0x80000000) 100 101 /* 102 * Update word. 103 */ 104 105 /* XXX What does this do? Perhaps for 96-bit boards? */ 106 #define STAMP_PLANE_8X3 (0 << 5) 107 #define STAMP_PLANE_24 (1 << 5) 108 109 /* Write enable */ 110 #define STAMP_WE_SIGN (0x04 << 8) 111 #define STAMP_WE_XYMASK (0x02 << 8) 112 #define STAMP_WE_CLIPRECT (0x01 << 8) 113 #define STAMP_WE_NONE (0x00 << 8) 114 115 /* Pixel write method */ 116 #define STAMP_METHOD_CLEAR (0x60 << 12) 117 #define STAMP_METHOD_AND (0x14 << 12) 118 #define STAMP_METHOD_ANDREV (0x15 << 12) 119 #define STAMP_METHOD_COPY (0x20 << 12) 120 #define STAMP_METHOD_ANDINV (0x16 << 12) 121 #define STAMP_METHOD_NOOP (0x40 << 12) 122 #define STAMP_METHOD_XOR (0x11 << 12) 123 #define STAMP_METHOD_OR (0x0f << 12) 124 #define STAMP_METHOD_NOR (0x17 << 12) 125 #define STAMP_METHOD_EQUIV (0x10 << 12) 126 #define STAMP_METHOD_INV (0x4e << 12) 127 #define STAMP_METHOD_ORREV (0x0e << 12) 128 #define STAMP_METHOD_COPYINV (0x2d << 12) 129 #define STAMP_METHOD_ORINV (0x0d << 12) 130 #define STAMP_METHOD_NAND (0x0c << 12) 131 #define STAMP_METHOD_SET (0x6c << 12) 132 #define STAMP_METHOD_SUM (0x00 << 12) 133 #define STAMP_METHOD_DIFF (0x02 << 12) 134 #define STAMP_METHOD_REVDIFF (0x01 << 12) 135 136 /* Double buffering */ 137 #define STAMP_DB_NONE (0x00 << 28) 138 #define STAMP_DB_01 (0x01 << 28) 139 #define STAMP_DB_12 (0x02 << 28) 140 #define STAMP_DB_02 (0x04 << 28) 141 142 /* Miscellaneous flags */ 143 #define STAMP_UPDATE_ENABLE (1 << 0) 144 #define STAMP_SAVE_SIGN (1 << 6) 145 #define STAMP_SAVE_ALPHA (1 << 7) 146 #define STAMP_SUPERSAMPLE (1 << 11) 147 #define STAMP_SPAN (1 << 19) 148 #define STAMP_COPYSPAN_ALIGNED (1 << 20) 149 #define STAMP_MINMAX (1 << 21) 150 #define STAMP_MULT (1 << 22) 151 #define STAMP_MULTACC (1 << 23) 152 #define STAMP_HALF_BUFF (1 << 27) 153 #define STAMP_INITIALIZE (1 << 31) 154 155 /* 156 * XYMASK address calculation. 157 */ 158 #define XMASKADDR(sw, sx, a) (((a)-((sx) % (sw))) & 15) 159 #define YMASKADDR(shm, sy, b) (((b)-((sy) & (shm))) & 15) 160 #define XYMASKADDR(sw,shm,x,y,a,b) \ 161 (XMASKADDR(sw,x,a) << 16 | YMASKADDR(shm,y,b)) 162 163 /* 164 * Miscellenous constants. 165 */ 166 #define STIC_MAGIC_X 370 167 #define STIC_MAGIC_Y 37 168 169 /* 170 * Poll register magic values. 171 */ 172 #define STAMP_OK (0) 173 #define STAMP_BUSY (1) 174 #define STAMP_RETRIES (100000) 175 #define STAMP_DELAY (10) 176 177 /* 178 * STIC registers. 179 */ 180 struct stic_regs { 181 u_int32_t sr_pad0; 182 u_int32_t sr_pad1; 183 u_int32_t sr_hsync; 184 u_int32_t sr_hsync2; 185 u_int32_t sr_hblank; 186 u_int32_t sr_vsync; 187 u_int32_t sr_vblank; 188 u_int32_t sr_vtest; 189 u_int32_t sr_ipdvint; 190 u_int32_t sr_pad2; 191 u_int32_t sr_sticsr; 192 u_int32_t sr_busdat; 193 u_int32_t sr_busadr; 194 u_int32_t sr_pad3; 195 u_int32_t sr_buscsr; 196 u_int32_t sr_modcl; 197 } __packed; 198 199 /* 200 * Bit definitions for stic_regs::sticsr. 201 */ 202 #define STIC_CSR_TSTFNC 0x00000003 203 # define STIC_CSR_TSTFNC_NORMAL 0 204 # define STIC_CSR_TSTFNC_PARITY 1 205 # define STIC_CSR_TSTFNC_CNTPIX 2 206 # define STIC_CSR_TSTFNC_TSTDAC 3 207 #define STIC_CSR_CHECKPAR 0x00000004 208 #define STIC_CSR_STARTVT 0x00000010 209 #define STIC_CSR_START 0x00000020 210 #define STIC_CSR_RESET 0x00000040 211 #define STIC_CSR_STARTST 0x00000080 212 213 /* 214 * Bit definitions for stic_regs::int. Three four-bit wide fields, for 215 * error (E), vertical-blank (V), and packet-done (P) intererupts, 216 * respectively. The low-order three bits of each field are interrupt 217 * enable, condition flagged, and nybble write enable. The top bit of each 218 * field is unused. 219 */ 220 #define STIC_INT_E_EN 0x00000001 221 #define STIC_INT_E 0x00000002 222 #define STIC_INT_E_WE 0x00000004 223 224 #define STIC_INT_V_EN 0x00000100 225 #define STIC_INT_V 0x00000200 226 #define STIC_INT_V_WE 0x00000400 227 228 #define STIC_INT_P_EN 0x00010000 229 #define STIC_INT_P 0x00020000 230 #define STIC_INT_P_WE 0x00040000 231 232 #define STIC_INT_E_MASK (STIC_INT_E_EN | STIC_INT_E | STIC_INT_E_WE) 233 #define STIC_INT_V_MASK (STIC_INT_V_EN | STIC_INT_V | STIC_INT_V_WE) 234 #define STIC_INT_P_MASK (STIC_INT_P_EN | STIC_INT_P | STIC_INT_P_WE) 235 #define STIC_INT_MASK (STIC_INT_E_MASK | STIC_INT_P_MASK | STIC_INT_V_MASK) 236 237 #define STIC_INT_WE (STIC_INT_E_WE | STIC_INT_V_WE | STIC_INT_P_WE) 238 #define STIC_INT_CLR (STIC_INT_E_EN | STIC_INT_V_EN | STIC_INT_P_EN) 239 240 /* 241 * On DMA: reading from a STIC poll register causes load & execution of 242 * the packet at the correspoinding physical address. Either STAMP_OK 243 * or STAMP_BUSY will be returned to indicate status. 244 * 245 * The STIC sees only 23-bits (8MB) of address space. Bits 21-22 in 246 * physical address space map to bits 27-28, and bits 15-20 map to bits 247 * 18-23 in the STIC's warped view of the word. On the PXG, the STIC 248 * sees only the onboard SRAM (so any `physical addresses' are offsets 249 * into the beginning of the SRAM). 250 */ 251 252 #endif /* _TC_STICREG_H_ */ 253