1 /* 2 Copyright 1999, Be Incorporated. All Rights Reserved. 3 This file may be used under the terms of the Be Sample Code License. 4 5 Other authors for MGA driver: 6 Mark Watson, 7 Rudolf Cornelissen 9/2002-1/2004 8 */ 9 10 #define MODULE_BIT 0x00400000 11 12 #include "acc_std.h" 13 14 #define T_POSITIVE_SYNC (B_POSITIVE_HSYNC | B_POSITIVE_VSYNC) 15 /* mode flags will be setup as status info by PROPOSEMODE! */ 16 #define MODE_FLAGS 0 17 #define MODE_COUNT (sizeof (mode_list) / sizeof (display_mode)) 18 19 /*some monitors only handle a fixed set of modes*/ 20 #include "valid_mode_list" 21 22 /*Standard VESA modes*/ 23 static const display_mode mode_list[] = { 24 { { 25175, 640, 656, 752, 800, 480, 490, 492, 525, 0}, B_CMAP8, 640, 480, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(640X480X8.Z1) */ 25 { { 27500, 640, 672, 768, 864, 480, 488, 494, 530, 0}, B_CMAP8, 640, 480, 0, 0, MODE_FLAGS}, /* 640X480X60Hz */ 26 { { 30500, 640, 672, 768, 864, 480, 517, 523, 588, 0}, B_CMAP8, 640, 480, 0, 0, MODE_FLAGS}, /* SVGA_640X480X60HzNI */ 27 { { 31500, 640, 664, 704, 832, 480, 489, 492, 520, 0}, B_CMAP8, 640, 480, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70-72Hz_(640X480X8.Z1) */ 28 { { 31500, 640, 656, 720, 840, 480, 481, 484, 500, 0}, B_CMAP8, 640, 480, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(640X480X8.Z1) */ 29 { { 36000, 640, 696, 752, 832, 480, 481, 484, 509, 0}, B_CMAP8, 640, 480, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(640X480X8.Z1) */ 30 { { 36000, 800, 824, 896, 1024, 600, 601, 603, 625, 0}, B_CMAP8, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@56Hz_(800X600) from Be, Inc. driver + XFree86 */ 31 { { 38100, 800, 832, 960, 1088, 600, 602, 606, 620, 0}, B_CMAP8, 800, 600, 0, 0, MODE_FLAGS}, /* SVGA_800X600X56HzNI */ 32 { { 40000, 800, 840, 968, 1056, 600, 601, 605, 628, T_POSITIVE_SYNC}, B_CMAP8, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(800X600X8.Z1) + XFree86 */ 33 { { 49500, 800, 816, 896, 1056, 600, 601, 604, 625, T_POSITIVE_SYNC}, B_CMAP8, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(800X600X8.Z1) + XFree86 */ 34 { { 50000, 800, 856, 976, 1040, 600, 637, 643, 666, T_POSITIVE_SYNC}, B_CMAP8, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70-72Hz_(800X600X8.Z1) + XFree86 */ 35 { { 56250, 800, 832, 896, 1048, 600, 601, 604, 631, T_POSITIVE_SYNC}, B_CMAP8, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(800X600X8.Z1) + XFree86 */ 36 { { 65000, 1024, 1048, 1184, 1344, 768, 771, 777, 806, 0}, B_CMAP8, 1024, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1024X768X8.Z1) + XFree86 */ 37 { { 75000, 1024, 1048, 1184, 1328, 768, 771, 777, 806, 0}, B_CMAP8, 1024, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70-72Hz_(1024X768X8.Z1) + XFree86 */ 38 { { 78750, 1024, 1040, 1136, 1312, 768, 769, 772, 800, T_POSITIVE_SYNC}, B_CMAP8, 1024, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1024X768X8.Z1) + XFree86 */ 39 { { 94500, 1024, 1072, 1168, 1376, 768, 769, 772, 808, T_POSITIVE_SYNC}, B_CMAP8, 1024, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(1024X768X8.Z1) + XFree86 */ 40 { { 94200, 1152, 1184, 1280, 1472, 864, 865, 868, 914, T_POSITIVE_SYNC}, B_CMAP8, 1152, 864, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70Hz_(1152X864X8.Z1) */ 41 { { 97800, 1152, 1216, 1344, 1552, 864, 865, 868, 900, T_POSITIVE_SYNC}, B_CMAP8, 1152, 864, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70Hz_(1152X864X8.Z1) */ 42 { { 108000, 1152, 1216, 1344, 1600, 864, 865, 868, 900, T_POSITIVE_SYNC}, B_CMAP8, 1152, 864, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1152X864X8.Z1) + XFree86 */ 43 { { 121500, 1152, 1216, 1344, 1568, 864, 865, 868, 911, T_POSITIVE_SYNC}, B_CMAP8, 1152, 864, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(1152X864X8.Z1) */ 44 { { 108000, 1280, 1328, 1440, 1688, 1024, 1025, 1028, 1066, T_POSITIVE_SYNC}, B_CMAP8, 1280, 1024, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1280X1024) from Be, Inc. driver + XFree86 */ 45 { { 135000, 1280, 1296, 1440, 1688, 1024, 1025, 1028, 1066, T_POSITIVE_SYNC}, B_CMAP8, 1280, 1024, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1280X1024X8.Z1) + XFree86 */ 46 { { 157500, 1280, 1344, 1504, 1728, 1024, 1025, 1028, 1072, T_POSITIVE_SYNC}, B_CMAP8, 1280, 1024, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(1280X1024X8.Z1) + XFree86 */ 47 { { 162000, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_CMAP8, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1600X1200X8.Z1) + XFree86 */ 48 /* identical lines to above one, apart from refreshrate.. */ 49 { { 175500, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_CMAP8, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@65Hz_(1600X1200X8.Z1) + XFree86 */ 50 { { 189000, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_CMAP8, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70Hz_(1600X1200X8.Z1) + XFree86 */ 51 { { 202500, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_CMAP8, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1600X1200X8.Z1) + XFree86 */ 52 { { 216000, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_CMAP8, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@80Hz_(1600X1200X8.Z1) */ 53 { { 229500, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_CMAP8, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(1600X1200X8.Z1) + XFree86 */ 54 /* end identical lines. */ 55 { { 204750, 1792, 1920, 2120, 2448, 1344, 1345, 1348, 1394, B_POSITIVE_VSYNC}, B_CMAP8, 1792, 1344, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1792X1344) from Be, Inc. driver + XFree86 */ 56 { { 261000, 1792, 1888, 2104, 2456, 1344, 1345, 1348, 1417, B_POSITIVE_VSYNC}, B_CMAP8, 1792, 1344, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1792X1344) from Be, Inc. driver + XFree86 */ 57 { { 218250, 1856, 1952, 2176, 2528, 1392, 1393, 1396, 1439, B_POSITIVE_VSYNC}, B_CMAP8, 1856, 1392, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1856X1392) from Be, Inc. driver + XFree86 */ 58 { { 288000, 1856, 1984, 2208, 2560, 1392, 1393, 1396, 1500, B_POSITIVE_VSYNC}, B_CMAP8, 1856, 1392, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1856X1392) from Be, Inc. driver + XFree86 */ 59 { { 234000, 1920, 2048, 2256, 2600, 1440, 1441, 1444, 1500, B_POSITIVE_VSYNC}, B_CMAP8, 1920, 1440, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1920X1440) from Be, Inc. driver + XFree86 */ 60 { { 297000, 1920, 2064, 2288, 2640, 1440, 1441, 1444, 1500, B_POSITIVE_VSYNC}, B_CMAP8, 1920, 1440, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1920X1440) from Be, Inc. driver + XFree86 */ 61 { { 266950, 2048, 2200, 2424, 2800, 1536, 1537, 1540, 1589, B_POSITIVE_VSYNC}, B_CMAP8, 2048, 1536, 0, 0, MODE_FLAGS}, /* From XFree86 posting @60Hz + XFree86 */ 62 }; 63 64 /* 65 Check mode is between low and high limits 66 returns: 67 B_OK - found one 68 B_BAD_VALUE - mode can be made, but outside limits 69 B_ERROR - not possible 70 */ 71 /* BOUNDS WARNING: 72 * BeOS (tested R5.0.3PE) is failing BWindowScreen.SetFrameBuffer() if PROPOSEMODE 73 * returns B_BAD_VALUE. It's called by the OS with target, low and high set to 74 * have the same settings for BWindowScreen! 75 * Which means we should not return B_BAD_VALUE on anything except for deviations on: 76 * display_mode.virtual_width; 77 * display_mode.virtual_height; 78 * display_mode.timing.h_display; 79 * display_mode.timing.v_display; 80 */ 81 /* Note: 82 * The target mode should be modified to correspond to the mode as it can be made. */ 83 status_t PROPOSE_DISPLAY_MODE(display_mode *target, const display_mode *low, const display_mode *high) 84 { 85 status_t status = B_OK; 86 float pix_clock_found; 87 uint8 m,n,p, bpp; 88 status_t result; 89 uint32 max_vclk, row_bytes, pointer_reservation; 90 bool acc_mode; 91 double target_refresh = ((double)target->timing.pixel_clock * 1000.0) / 92 ( 93 (double)target->timing.h_total * 94 (double)target->timing.v_total 95 ); 96 bool 97 want_same_width = target->timing.h_display == target->virtual_width, 98 want_same_height = target->timing.v_display == target->virtual_height; 99 100 LOG(1, ("PROPOSEMODE: (ENTER) requested virtual_width %d, virtual_height %d\n", 101 target->virtual_width, target->virtual_height)); 102 103 /*check valid list: 104 if (VALID_REQUIRED is set) 105 { 106 if (find modes with same size) 107 { 108 pick one with nearest pixel clock 109 } 110 else 111 { 112 pick next largest with nearest pixel clock and modify visible portion as far as possible 113 } 114 } 115 */ 116 #ifdef VALID_MODE_REQUIRED 117 { 118 int i; 119 int closest_mode_ptr; 120 uint32 closest_mode_clock; 121 122 LOG(1, ("PROPOSEMODE: valid mode required!\n")); 123 124 closest_mode_ptr = 0xbad; 125 closest_mode_clock = 0; 126 for (i=0;i<VALID_MODES;i++) 127 { 128 /*check size is ok and clock is better than any found before*/ 129 if( 130 target->timing.h_display==valid_mode_list[i].h_display && 131 target->timing.v_display==valid_mode_list[i].v_display 132 ) 133 { 134 if ( 135 abs(valid_mode_list[i].pixel_clock-target->timing.pixel_clock)< 136 abs(closest_mode_clock-target->timing.pixel_clock) 137 ) 138 { 139 closest_mode_clock=valid_mode_list[i].pixel_clock; 140 closest_mode_ptr=i; 141 } 142 } 143 } 144 145 if (closest_mode_ptr==0xbad)/*if no modes of correct size*/ 146 { 147 LOG(4, ("PROPOSEMODE: no valid mode found, aborted.\n")); 148 return B_ERROR; 149 } 150 else 151 { 152 target->timing=valid_mode_list[closest_mode_ptr]; 153 target_refresh = ((double)target->timing.pixel_clock * 1000.0) / /*I require this refresh*/ 154 ((double)target->timing.h_total * (double)target->timing.v_total); 155 } 156 } 157 #endif 158 159 /*find a nearby valid timing from that given*/ 160 result = gx00_crtc_validate_timing 161 ( 162 &target->timing.h_display, &target->timing.h_sync_start, &target->timing.h_sync_end, &target->timing.h_total, 163 &target->timing.v_display, &target->timing.v_sync_start, &target->timing.v_sync_end, &target->timing.v_total 164 ); 165 if (result == B_ERROR) 166 { 167 LOG(4, ("PROPOSEMODE: could not validate timing, aborted.\n")); 168 return result; 169 } 170 171 /* validate display vs. virtual */ 172 if ((target->timing.h_display > target->virtual_width) || want_same_width) 173 target->virtual_width = target->timing.h_display; 174 if ((target->timing.v_display > target->virtual_height) || want_same_height) 175 target->virtual_height = target->timing.v_display; 176 177 /* nail virtual size and 'subsequently' calculate rowbytes */ 178 result = gx00_general_validate_pic_size (target, &row_bytes, &acc_mode); 179 if (result == B_ERROR) 180 { 181 LOG(4, ("PROPOSEMODE: could not validate virtual picture size, aborted.\n")); 182 return result; 183 } 184 185 /*check if virtual_width is still within the requested limits*/ 186 if ((target->virtual_width < low->virtual_width) || 187 (target->virtual_width > high->virtual_width)) 188 { 189 status = B_BAD_VALUE; 190 LOG(4, ("PROPOSEMODE: WARNING: virtual_width deviates too much\n")); 191 } 192 193 /*check if timing found is within the requested horizontal limits*/ 194 if ((target->timing.h_display < low->timing.h_display) || 195 (target->timing.h_display > high->timing.h_display) || 196 (target->timing.h_sync_start < low->timing.h_sync_start) || 197 (target->timing.h_sync_start > high->timing.h_sync_start) || 198 (target->timing.h_sync_end < low->timing.h_sync_end) || 199 (target->timing.h_sync_end > high->timing.h_sync_end) || 200 (target->timing.h_total < low->timing.h_total) || 201 (target->timing.h_total > high->timing.h_total)) 202 { 203 /* BWindowScreen workaround: we accept everything except h_display deviations */ 204 if ((target->timing.h_display < low->timing.h_display) || 205 (target->timing.h_display > high->timing.h_display)) 206 { 207 status = B_BAD_VALUE; 208 } 209 else 210 { 211 status = B_OK; 212 } 213 LOG(4, ("PROPOSEMODE: WARNING: horizontal timing deviates too much\n")); 214 } 215 216 /*check if timing found is within the requested vertical limits*/ 217 if ( 218 (target->timing.v_display < low->timing.v_display) || 219 (target->timing.v_display > high->timing.v_display) || 220 (target->timing.v_sync_start < low->timing.v_sync_start) || 221 (target->timing.v_sync_start > high->timing.v_sync_start) || 222 (target->timing.v_sync_end < low->timing.v_sync_end) || 223 (target->timing.v_sync_end > high->timing.v_sync_end) || 224 (target->timing.v_total < low->timing.v_total) || 225 (target->timing.v_total > high->timing.v_total) 226 ) 227 { 228 /* BWindowScreen workaround: we accept everything except v_display deviations */ 229 if ((target->timing.v_display < low->timing.v_display) || 230 (target->timing.v_display > high->timing.v_display)) 231 { 232 status = B_BAD_VALUE; 233 } 234 else 235 { 236 status = B_OK; 237 } 238 LOG(4, ("PROPOSEMODE: WARNING: vertical timing deviates too much\n")); 239 } 240 241 /* adjust pixelclock for possible timing modifications done above */ 242 target->timing.pixel_clock = target_refresh * ((double)target->timing.h_total) * ((double)target->timing.v_total) / 1000.0; 243 244 /* Now find the nearest valid pixelclock we actually can setup for the target mode, 245 * this also makes sure we don't generate more pixel bandwidth than the device can handle */ 246 /* calculate settings, but do not actually test anything (that costs too much time!) */ 247 result = gx00_dac_pix_pll_find(*target,&pix_clock_found,&m,&n,&p,0); 248 /* update the target mode */ 249 target->timing.pixel_clock = (pix_clock_found * 1000); 250 251 /* note if we fell outside the limits */ 252 if ((target->timing.pixel_clock < low->timing.pixel_clock) || 253 (target->timing.pixel_clock > high->timing.pixel_clock) 254 ) 255 { 256 /* BWindowScreen workaround: we accept deviations <= 1Mhz */ 257 if ((target->timing.pixel_clock < (low->timing.pixel_clock - 1000)) || 258 (target->timing.pixel_clock > (high->timing.pixel_clock + 1000))) 259 { 260 status = B_BAD_VALUE; 261 } 262 else 263 { 264 status = B_OK; 265 } 266 LOG(4, ("PROPOSEMODE: WARNING: pixelclock deviates too much\n")); 267 } 268 269 /* checkout space needed for hardcursor (if any) */ 270 pointer_reservation = 0; 271 /* MIL 1/2 cards have a seperate buffer for the cursorbitmap inside the DAC */ 272 if ((si->ps.card_type >= G100) && si->settings.hardcursor) pointer_reservation = 1024; 273 /* memory requirement for frame buffer */ 274 if ((row_bytes * target->virtual_height) > 275 ((si->ps.memory_size * 1024 * 1024) - pointer_reservation)) 276 { 277 target->virtual_height = 278 ((si->ps.memory_size * 1024 * 1024) - pointer_reservation) / row_bytes; 279 } 280 if (target->virtual_height < target->timing.v_display) 281 { 282 LOG(4,("PROPOSEMODE: not enough memory for current mode, aborted.\n")); 283 return B_ERROR; 284 } 285 LOG(4,("PROPOSEMODE: validated virtual_width %d, virtual_height %d pixels\n", 286 target->virtual_width, target->virtual_height)); 287 288 if ((target->virtual_height < low->virtual_height) || 289 (target->virtual_height > high->virtual_height)) 290 { 291 status = B_BAD_VALUE; 292 LOG(4, ("PROPOSEMODE: WARNING: virtual_height deviates too much\n")); 293 } 294 295 /* setup status flags */ 296 LOG(1, ("PROPOSEMODE: initial modeflags: $%08x\n", target->flags)); 297 /* preset to singlehead card without TVout, no overlay support and no hardcursor. 298 * also advice system that app_server and acc engine may touch the framebuffer 299 * simultaneously (fixed). */ 300 target->flags &= 301 ~(DUALHEAD_CAPABLE | TV_CAPABLE | B_SUPPORTS_OVERLAYS | B_HARDWARE_CURSOR | B_IO_FB_NA); 302 /* we always allow parallel access (fixed), the DAC is always in 'enhanced' 303 * mode (fixed), and all modes support DPMS (fixed); 304 * We support scrolling and panning in every mode, so we 'send a signal' to 305 * BWindowScreen.CanControlFrameBuffer() by setting B_SCROLL. */ 306 /* BTW: B_PARALLEL_ACCESS in combination with a hardcursor enables 307 * BDirectWindow windowed modes. */ 308 target->flags |= (B_PARALLEL_ACCESS | B_8_BIT_DAC | B_DPMS | B_SCROLL); 309 310 /* determine the 'would be' max. pixelclock for the second DAC for the current videomode if dualhead were activated */ 311 switch (target->space) 312 { 313 case B_CMAP8: 314 max_vclk = si->ps.max_dac2_clock_8; 315 bpp = 1; 316 break; 317 case B_RGB15_LITTLE: 318 case B_RGB16_LITTLE: 319 max_vclk = si->ps.max_dac2_clock_16; 320 bpp = 2; 321 break; 322 case B_RGB24_LITTLE: 323 max_vclk = si->ps.max_dac2_clock_24; 324 bpp = 3; 325 break; 326 case B_RGB32_LITTLE: 327 max_vclk = si->ps.max_dac2_clock_32dh; 328 bpp = 4; 329 break; 330 default: 331 /* use fail-safe value */ 332 max_vclk = si->ps.max_dac2_clock_32dh; 333 bpp = 4; 334 break; 335 } 336 337 /* set DUALHEAD_CAPABLE if suitable */ 338 //fixme: update for independant secondary head use! (reserve fixed memory then) 339 if (si->ps.secondary_head && 340 ((target->space == B_RGB16_LITTLE) || (target->space == B_RGB32_LITTLE)) && 341 (target->timing.pixel_clock <= (max_vclk * 1000))) 342 { 343 /* extra line for G400 MAVEN vblank design fault workaround needed! */ 344 uint16 vblank_fix = 0; 345 if (si->ps.card_type <= G400MAX) vblank_fix = 1; 346 347 switch (target->flags & DUALHEAD_BITS) 348 { 349 case DUALHEAD_ON: 350 case DUALHEAD_SWITCH: 351 if ((((si->ps.memory_size * 1024 * 1024) - pointer_reservation) >= 352 (row_bytes * (target->virtual_height + vblank_fix))) && 353 ((uint16)(row_bytes / bpp) >= (target->timing.h_display * 2))) 354 { 355 target->flags |= DUALHEAD_CAPABLE; 356 } 357 break; 358 case DUALHEAD_CLONE: 359 if (((si->ps.memory_size * 1024 * 1024) - pointer_reservation) >= 360 (row_bytes * (target->virtual_height + vblank_fix))) 361 { 362 target->flags |= DUALHEAD_CAPABLE; 363 } 364 break; 365 case DUALHEAD_OFF: 366 if (((si->ps.memory_size * 1024 * 1024) - pointer_reservation) >= 367 (row_bytes * (target->virtual_height + vblank_fix) * 2)) 368 { 369 target->flags |= DUALHEAD_CAPABLE; 370 } 371 break; 372 } 373 } 374 375 /* set TV_CAPABLE if suitable: pixelclock is not important (defined by TVstandard) */ 376 //fixme: modify for G100 and G200 TVout later on... 377 if (target->flags & DUALHEAD_CAPABLE) 378 { 379 if (si->ps.secondary_tvout && 380 (target->timing.h_display <= 1024) && 381 (target->timing.v_display <= 768)) 382 { 383 target->flags |= TV_CAPABLE; 384 } 385 } 386 387 /* set HARDWARE_CURSOR mode if suitable */ 388 if (si->settings.hardcursor) 389 target->flags |= B_HARDWARE_CURSOR; 390 391 /* set SUPPORTS_OVERLAYS if suitable */ 392 if (si->ps.card_type >= G200) 393 target->flags |= B_SUPPORTS_OVERLAYS; 394 395 LOG(1, ("PROPOSEMODE: validated status modeflags: $%08x\n", target->flags)); 396 397 /* overrule timing command flags to be (fixed) blank_pedestal = 0.0IRE, 398 * progressive scan (fixed), and setup sync_on_green flag according to 399 * mga.settings options file */ 400 target->timing.flags &= ~(B_BLANK_PEDESTAL | B_TIMING_INTERLACED | B_SYNC_ON_GREEN); 401 if (si->settings.greensync) 402 target->timing.flags |= B_SYNC_ON_GREEN; 403 /* The HSYNC and VSYNC command flags are actually executed by the driver. */ 404 405 if (status == B_OK) LOG(4, ("PROPOSEMODE: completed successfully.\n")); 406 else LOG(4, ("PROPOSEMODE: mode can be made, but outside given limits.\n")); 407 return status; 408 } 409 410 /* Return the number of modes this device will return from GET_MODE_LIST(). 411 This is precalculated in create_mode_list (called from InitAccelerant stuff) 412 */ 413 uint32 ACCELERANT_MODE_COUNT(void) 414 { 415 LOG(1, ("ACCELERANT_MODE_COUNT: the modelist contains %d modes\n",si->mode_count)); 416 417 return si->mode_count; 418 } 419 420 /* Copy the list of guaranteed supported video modes to the location provided.*/ 421 status_t GET_MODE_LIST(display_mode *dm) 422 { 423 LOG(1, ("GET_MODE_LIST: exporting the modelist created before.\n")); 424 425 memcpy(dm, my_mode_list, si->mode_count * sizeof(display_mode)); 426 return B_OK; 427 } 428 429 /* Create a list of display_modes to pass back to the caller.*/ 430 status_t create_mode_list(void) { 431 size_t max_size; 432 uint32 433 i, j, 434 pix_clk_range; 435 const display_mode 436 *src; 437 display_mode 438 *dst, 439 low, 440 high; 441 442 color_space spaces[4] = {B_RGB32_LITTLE,B_RGB16_LITTLE,B_RGB15_LITTLE,B_CMAP8}; 443 444 /* figure out how big the list could be, and adjust up to nearest multiple of B_PAGE_SIZE*/ 445 max_size = (((MODE_COUNT * 4) * sizeof(display_mode)) + (B_PAGE_SIZE-1)) & ~(B_PAGE_SIZE-1); 446 /* create an area to hold the info */ 447 si->mode_area = my_mode_list_area = 448 create_area("MGA accelerant mode info", (void **)&my_mode_list, B_ANY_ADDRESS, max_size, B_NO_LOCK, B_READ_AREA | B_WRITE_AREA); 449 if (my_mode_list_area < B_OK) return my_mode_list_area; 450 451 /* walk through our predefined list and see which modes fit this device */ 452 src = mode_list; 453 dst = my_mode_list; 454 si->mode_count = 0; 455 for (i = 0; i < MODE_COUNT; i++) { 456 /* set ranges for acceptable values */ 457 low = high = *src; 458 /* range is 6.25% of default clock: arbitrarily picked */ 459 pix_clk_range = low.timing.pixel_clock >> 5; 460 low.timing.pixel_clock -= pix_clk_range; 461 high.timing.pixel_clock += pix_clk_range; 462 /* 'some cards need wider virtual widths for certain modes': 463 * Not true. They might need a wider pitch, but this is _not_ reflected in 464 * virtual_width, but in fbc.bytes_per_row. */ 465 //So disable next line: 466 //high.virtual_width = 4096; 467 /* do it once for each depth we want to support */ 468 for (j = 0; j < (sizeof(spaces) / sizeof(color_space)); j++) 469 { 470 /* set target values */ 471 *dst = *src; 472 /* poke the specific space */ 473 dst->space = low.space = high.space = spaces[j]; 474 /* ask for a compatible mode */ 475 /* We have to check for B_OK, because otherwise the pix_clk_range 476 * won't be taken into account!! */ 477 //So don't do this: 478 //if (PROPOSE_DISPLAY_MODE(dst, &low, &high) != B_ERROR) { 479 //Instead, do this: 480 if (PROPOSE_DISPLAY_MODE(dst, &low, &high) == B_OK) { 481 /* count it, and move on to next mode */ 482 dst++; 483 si->mode_count++; 484 } 485 } 486 /* advance to next mode */ 487 src++; 488 } 489 490 return B_OK; 491 } 492