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sys/dev/drm/r128_cce.c
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1 /* r128_cce.c -- ATI Rage 128 driver -*- linux-c -*- 2 * Created: Wed Apr 5 19:24:19 2000 by kevin@precisioninsight.com 3 */ 4 /*- 5 * Copyright 2000 Precision Insight, Inc., Cedar Park, Texas. 6 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 7 * All Rights Reserved. 8 * 9 * Permission is hereby granted, free of charge, to any person obtaining a 10 * copy of this software and associated documentation files (the "Software"), 11 * to deal in the Software without restriction, including without limitation 12 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 13 * and/or sell copies of the Software, and to permit persons to whom the 14 * Software is furnished to do so, subject to the following conditions: 15 * 16 * The above copyright notice and this permission notice (including the next 17 * paragraph) shall be included in all copies or substantial portions of the 18 * Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 23 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 26 * DEALINGS IN THE SOFTWARE. 27 * 28 * Authors: 29 * Gareth Hughes <gareth@valinux.com> 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD: releng/9.0/sys/dev/drm/r128_cce.c 207067 2010-04-22 18:44:23Z rnoland $"); 34 35 #include "dev/drm/drmP.h" 36 #include "dev/drm/drm.h" 37 #include "dev/drm/r128_drm.h" 38 #include "dev/drm/r128_drv.h" 39 40 #define R128_FIFO_DEBUG 0 41 42 /* CCE microcode (from ATI) */ 43 static u32 r128_cce_microcode[] = { 44 0, 276838400, 0, 268449792, 2, 142, 2, 145, 0, 1076765731, 0, 45 1617039951, 0, 774592877, 0, 1987540286, 0, 2307490946U, 0, 46 599558925, 0, 589505315, 0, 596487092, 0, 589505315, 1, 47 11544576, 1, 206848, 1, 311296, 1, 198656, 2, 912273422, 11, 48 262144, 0, 0, 1, 33559837, 1, 7438, 1, 14809, 1, 6615, 12, 28, 49 1, 6614, 12, 28, 2, 23, 11, 18874368, 0, 16790922, 1, 409600, 9, 50 30, 1, 147854772, 16, 420483072, 3, 8192, 0, 10240, 1, 198656, 51 1, 15630, 1, 51200, 10, 34858, 9, 42, 1, 33559823, 2, 10276, 1, 52 15717, 1, 15718, 2, 43, 1, 15936948, 1, 570480831, 1, 14715071, 53 12, 322123831, 1, 33953125, 12, 55, 1, 33559908, 1, 15718, 2, 54 46, 4, 2099258, 1, 526336, 1, 442623, 4, 4194365, 1, 509952, 1, 55 459007, 3, 0, 12, 92, 2, 46, 12, 176, 1, 15734, 1, 206848, 1, 56 18432, 1, 133120, 1, 100670734, 1, 149504, 1, 165888, 1, 57 15975928, 1, 1048576, 6, 3145806, 1, 15715, 16, 2150645232U, 2, 58 268449859, 2, 10307, 12, 176, 1, 15734, 1, 15735, 1, 15630, 1, 59 15631, 1, 5253120, 6, 3145810, 16, 2150645232U, 1, 15864, 2, 82, 60 1, 343310, 1, 1064207, 2, 3145813, 1, 15728, 1, 7817, 1, 15729, 61 3, 15730, 12, 92, 2, 98, 1, 16168, 1, 16167, 1, 16002, 1, 16008, 62 1, 15974, 1, 15975, 1, 15990, 1, 15976, 1, 15977, 1, 15980, 0, 63 15981, 1, 10240, 1, 5253120, 1, 15720, 1, 198656, 6, 110, 1, 64 180224, 1, 103824738, 2, 112, 2, 3145839, 0, 536885440, 1, 65 114880, 14, 125, 12, 206975, 1, 33559995, 12, 198784, 0, 66 33570236, 1, 15803, 0, 15804, 3, 294912, 1, 294912, 3, 442370, 67 1, 11544576, 0, 811612160, 1, 12593152, 1, 11536384, 1, 68 14024704, 7, 310382726, 0, 10240, 1, 14796, 1, 14797, 1, 14793, 69 1, 14794, 0, 14795, 1, 268679168, 1, 9437184, 1, 268449792, 1, 70 198656, 1, 9452827, 1, 1075854602, 1, 1075854603, 1, 557056, 1, 71 114880, 14, 159, 12, 198784, 1, 1109409213, 12, 198783, 1, 72 1107312059, 12, 198784, 1, 1109409212, 2, 162, 1, 1075854781, 1, 73 1073757627, 1, 1075854780, 1, 540672, 1, 10485760, 6, 3145894, 74 16, 274741248, 9, 168, 3, 4194304, 3, 4209949, 0, 0, 0, 256, 14, 75 174, 1, 114857, 1, 33560007, 12, 176, 0, 10240, 1, 114858, 1, 76 33560018, 1, 114857, 3, 33560007, 1, 16008, 1, 114874, 1, 77 33560360, 1, 114875, 1, 33560154, 0, 15963, 0, 256, 0, 4096, 1, 78 409611, 9, 188, 0, 10240, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 79 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 80 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 81 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 82 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 83 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 84 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 85 }; 86 87 static int R128_READ_PLL(struct drm_device * dev, int addr) 88 { 89 drm_r128_private_t *dev_priv = dev->dev_private; 90 91 R128_WRITE8(R128_CLOCK_CNTL_INDEX, addr & 0x1f); 92 return R128_READ(R128_CLOCK_CNTL_DATA); 93 } 94 95 #if R128_FIFO_DEBUG 96 static void r128_status(drm_r128_private_t * dev_priv) 97 { 98 printk("GUI_STAT = 0x%08x\n", 99 (unsigned int)R128_READ(R128_GUI_STAT)); 100 printk("PM4_STAT = 0x%08x\n", 101 (unsigned int)R128_READ(R128_PM4_STAT)); 102 printk("PM4_BUFFER_DL_WPTR = 0x%08x\n", 103 (unsigned int)R128_READ(R128_PM4_BUFFER_DL_WPTR)); 104 printk("PM4_BUFFER_DL_RPTR = 0x%08x\n", 105 (unsigned int)R128_READ(R128_PM4_BUFFER_DL_RPTR)); 106 printk("PM4_MICRO_CNTL = 0x%08x\n", 107 (unsigned int)R128_READ(R128_PM4_MICRO_CNTL)); 108 printk("PM4_BUFFER_CNTL = 0x%08x\n", 109 (unsigned int)R128_READ(R128_PM4_BUFFER_CNTL)); 110 } 111 #endif 112 113 /* ================================================================ 114 * Engine, FIFO control 115 */ 116 117 static int r128_do_pixcache_flush(drm_r128_private_t * dev_priv) 118 { 119 u32 tmp; 120 int i; 121 122 tmp = R128_READ(R128_PC_NGUI_CTLSTAT) | R128_PC_FLUSH_ALL; 123 R128_WRITE(R128_PC_NGUI_CTLSTAT, tmp); 124 125 for (i = 0; i < dev_priv->usec_timeout; i++) { 126 if (!(R128_READ(R128_PC_NGUI_CTLSTAT) & R128_PC_BUSY)) { 127 return 0; 128 } 129 DRM_UDELAY(1); 130 } 131 132 #if R128_FIFO_DEBUG 133 DRM_ERROR("failed!\n"); 134 #endif 135 return -EBUSY; 136 } 137 138 static int r128_do_wait_for_fifo(drm_r128_private_t * dev_priv, int entries) 139 { 140 int i; 141 142 for (i = 0; i < dev_priv->usec_timeout; i++) { 143 int slots = R128_READ(R128_GUI_STAT) & R128_GUI_FIFOCNT_MASK; 144 if (slots >= entries) 145 return 0; 146 DRM_UDELAY(1); 147 } 148 149 #if R128_FIFO_DEBUG 150 DRM_ERROR("failed!\n"); 151 #endif 152 return -EBUSY; 153 } 154 155 static int r128_do_wait_for_idle(drm_r128_private_t * dev_priv) 156 { 157 int i, ret; 158 159 ret = r128_do_wait_for_fifo(dev_priv, 64); 160 if (ret) 161 return ret; 162 163 for (i = 0; i < dev_priv->usec_timeout; i++) { 164 if (!(R128_READ(R128_GUI_STAT) & R128_GUI_ACTIVE)) { 165 r128_do_pixcache_flush(dev_priv); 166 return 0; 167 } 168 DRM_UDELAY(1); 169 } 170 171 #if R128_FIFO_DEBUG 172 DRM_ERROR("failed!\n"); 173 #endif 174 return -EBUSY; 175 } 176 177 /* ================================================================ 178 * CCE control, initialization 179 */ 180 181 /* Load the microcode for the CCE */ 182 static void r128_cce_load_microcode(drm_r128_private_t * dev_priv) 183 { 184 int i; 185 186 DRM_DEBUG("\n"); 187 188 r128_do_wait_for_idle(dev_priv); 189 190 R128_WRITE(R128_PM4_MICROCODE_ADDR, 0); 191 for (i = 0; i < 256; i++) { 192 R128_WRITE(R128_PM4_MICROCODE_DATAH, r128_cce_microcode[i * 2]); 193 R128_WRITE(R128_PM4_MICROCODE_DATAL, 194 r128_cce_microcode[i * 2 + 1]); 195 } 196 } 197 198 /* Flush any pending commands to the CCE. This should only be used just 199 * prior to a wait for idle, as it informs the engine that the command 200 * stream is ending. 201 */ 202 static void r128_do_cce_flush(drm_r128_private_t * dev_priv) 203 { 204 u32 tmp; 205 206 tmp = R128_READ(R128_PM4_BUFFER_DL_WPTR) | R128_PM4_BUFFER_DL_DONE; 207 R128_WRITE(R128_PM4_BUFFER_DL_WPTR, tmp); 208 } 209 210 /* Wait for the CCE to go idle. 211 */ 212 int r128_do_cce_idle(drm_r128_private_t * dev_priv) 213 { 214 int i; 215 216 for (i = 0; i < dev_priv->usec_timeout; i++) { 217 if (GET_RING_HEAD(dev_priv) == dev_priv->ring.tail) { 218 int pm4stat = R128_READ(R128_PM4_STAT); 219 if (((pm4stat & R128_PM4_FIFOCNT_MASK) >= 220 dev_priv->cce_fifo_size) && 221 !(pm4stat & (R128_PM4_BUSY | 222 R128_PM4_GUI_ACTIVE))) { 223 return r128_do_pixcache_flush(dev_priv); 224 } 225 } 226 DRM_UDELAY(1); 227 } 228 229 #if R128_FIFO_DEBUG 230 DRM_ERROR("failed!\n"); 231 r128_status(dev_priv); 232 #endif 233 return -EBUSY; 234 } 235 236 /* Start the Concurrent Command Engine. 237 */ 238 static void r128_do_cce_start(drm_r128_private_t * dev_priv) 239 { 240 r128_do_wait_for_idle(dev_priv); 241 242 R128_WRITE(R128_PM4_BUFFER_CNTL, 243 dev_priv->cce_mode | dev_priv->ring.size_l2qw 244 | R128_PM4_BUFFER_CNTL_NOUPDATE); 245 R128_READ(R128_PM4_BUFFER_ADDR); /* as per the sample code */ 246 R128_WRITE(R128_PM4_MICRO_CNTL, R128_PM4_MICRO_FREERUN); 247 248 dev_priv->cce_running = 1; 249 } 250 251 /* Reset the Concurrent Command Engine. This will not flush any pending 252 * commands, so you must wait for the CCE command stream to complete 253 * before calling this routine. 254 */ 255 static void r128_do_cce_reset(drm_r128_private_t * dev_priv) 256 { 257 R128_WRITE(R128_PM4_BUFFER_DL_WPTR, 0); 258 R128_WRITE(R128_PM4_BUFFER_DL_RPTR, 0); 259 dev_priv->ring.tail = 0; 260 } 261 262 /* Stop the Concurrent Command Engine. This will not flush any pending 263 * commands, so you must flush the command stream and wait for the CCE 264 * to go idle before calling this routine. 265 */ 266 static void r128_do_cce_stop(drm_r128_private_t * dev_priv) 267 { 268 R128_WRITE(R128_PM4_MICRO_CNTL, 0); 269 R128_WRITE(R128_PM4_BUFFER_CNTL, 270 R128_PM4_NONPM4 | R128_PM4_BUFFER_CNTL_NOUPDATE); 271 272 dev_priv->cce_running = 0; 273 } 274 275 /* Reset the engine. This will stop the CCE if it is running. 276 */ 277 static int r128_do_engine_reset(struct drm_device * dev) 278 { 279 drm_r128_private_t *dev_priv = dev->dev_private; 280 u32 clock_cntl_index, mclk_cntl, gen_reset_cntl; 281 282 r128_do_pixcache_flush(dev_priv); 283 284 clock_cntl_index = R128_READ(R128_CLOCK_CNTL_INDEX); 285 mclk_cntl = R128_READ_PLL(dev, R128_MCLK_CNTL); 286 287 R128_WRITE_PLL(R128_MCLK_CNTL, 288 mclk_cntl | R128_FORCE_GCP | R128_FORCE_PIPE3D_CP); 289 290 gen_reset_cntl = R128_READ(R128_GEN_RESET_CNTL); 291 292 /* Taken from the sample code - do not change */ 293 R128_WRITE(R128_GEN_RESET_CNTL, gen_reset_cntl | R128_SOFT_RESET_GUI); 294 R128_READ(R128_GEN_RESET_CNTL); 295 R128_WRITE(R128_GEN_RESET_CNTL, gen_reset_cntl & ~R128_SOFT_RESET_GUI); 296 R128_READ(R128_GEN_RESET_CNTL); 297 298 R128_WRITE_PLL(R128_MCLK_CNTL, mclk_cntl); 299 R128_WRITE(R128_CLOCK_CNTL_INDEX, clock_cntl_index); 300 R128_WRITE(R128_GEN_RESET_CNTL, gen_reset_cntl); 301 302 /* Reset the CCE ring */ 303 r128_do_cce_reset(dev_priv); 304 305 /* The CCE is no longer running after an engine reset */ 306 dev_priv->cce_running = 0; 307 308 /* Reset any pending vertex, indirect buffers */ 309 r128_freelist_reset(dev); 310 311 return 0; 312 } 313 314 static void r128_cce_init_ring_buffer(struct drm_device * dev, 315 drm_r128_private_t * dev_priv) 316 { 317 u32 ring_start; 318 u32 tmp; 319 320 DRM_DEBUG("\n"); 321 322 /* The manual (p. 2) says this address is in "VM space". This 323 * means it's an offset from the start of AGP space. 324 */ 325 #if __OS_HAS_AGP 326 if (!dev_priv->is_pci) 327 ring_start = dev_priv->cce_ring->offset - dev->agp->base; 328 else 329 #endif 330 ring_start = dev_priv->cce_ring->offset - dev->sg->vaddr; 331 332 R128_WRITE(R128_PM4_BUFFER_OFFSET, ring_start | R128_AGP_OFFSET); 333 334 R128_WRITE(R128_PM4_BUFFER_DL_WPTR, 0); 335 R128_WRITE(R128_PM4_BUFFER_DL_RPTR, 0); 336 337 /* Set watermark control */ 338 R128_WRITE(R128_PM4_BUFFER_WM_CNTL, 339 ((R128_WATERMARK_L / 4) << R128_WMA_SHIFT) 340 | ((R128_WATERMARK_M / 4) << R128_WMB_SHIFT) 341 | ((R128_WATERMARK_N / 4) << R128_WMC_SHIFT) 342 | ((R128_WATERMARK_K / 64) << R128_WB_WM_SHIFT)); 343 344 /* Force read. Why? Because it's in the examples... */ 345 R128_READ(R128_PM4_BUFFER_ADDR); 346 347 /* Turn on bus mastering */ 348 tmp = R128_READ(R128_BUS_CNTL) & ~R128_BUS_MASTER_DIS; 349 R128_WRITE(R128_BUS_CNTL, tmp); 350 } 351 352 static int r128_do_init_cce(struct drm_device * dev, drm_r128_init_t * init) 353 { 354 drm_r128_private_t *dev_priv; 355 356 DRM_DEBUG("\n"); 357 358 dev_priv = drm_alloc(sizeof(drm_r128_private_t), DRM_MEM_DRIVER); 359 if (dev_priv == NULL) 360 return -ENOMEM; 361 362 memset(dev_priv, 0, sizeof(drm_r128_private_t)); 363 364 dev_priv->is_pci = init->is_pci; 365 366 if (dev_priv->is_pci && !dev->sg) { 367 DRM_ERROR("PCI GART memory not allocated!\n"); 368 dev->dev_private = (void *)dev_priv; 369 r128_do_cleanup_cce(dev); 370 return -EINVAL; 371 } 372 373 dev_priv->usec_timeout = init->usec_timeout; 374 if (dev_priv->usec_timeout < 1 || 375 dev_priv->usec_timeout > R128_MAX_USEC_TIMEOUT) { 376 DRM_DEBUG("TIMEOUT problem!\n"); 377 dev->dev_private = (void *)dev_priv; 378 r128_do_cleanup_cce(dev); 379 return -EINVAL; 380 } 381 382 dev_priv->cce_mode = init->cce_mode; 383 384 /* GH: Simple idle check. 385 */ 386 atomic_set(&dev_priv->idle_count, 0); 387 388 /* We don't support anything other than bus-mastering ring mode, 389 * but the ring can be in either AGP or PCI space for the ring 390 * read pointer. 391 */ 392 if ((init->cce_mode != R128_PM4_192BM) && 393 (init->cce_mode != R128_PM4_128BM_64INDBM) && 394 (init->cce_mode != R128_PM4_64BM_128INDBM) && 395 (init->cce_mode != R128_PM4_64BM_64VCBM_64INDBM)) { 396 DRM_DEBUG("Bad cce_mode!\n"); 397 dev->dev_private = (void *)dev_priv; 398 r128_do_cleanup_cce(dev); 399 return -EINVAL; 400 } 401 402 switch (init->cce_mode) { 403 case R128_PM4_NONPM4: 404 dev_priv->cce_fifo_size = 0; 405 break; 406 case R128_PM4_192PIO: 407 case R128_PM4_192BM: 408 dev_priv->cce_fifo_size = 192; 409 break; 410 case R128_PM4_128PIO_64INDBM: 411 case R128_PM4_128BM_64INDBM: 412 dev_priv->cce_fifo_size = 128; 413 break; 414 case R128_PM4_64PIO_128INDBM: 415 case R128_PM4_64BM_128INDBM: 416 case R128_PM4_64PIO_64VCBM_64INDBM: 417 case R128_PM4_64BM_64VCBM_64INDBM: 418 case R128_PM4_64PIO_64VCPIO_64INDPIO: 419 dev_priv->cce_fifo_size = 64; 420 break; 421 } 422 423 switch (init->fb_bpp) { 424 case 16: 425 dev_priv->color_fmt = R128_DATATYPE_RGB565; 426 break; 427 case 32: 428 default: 429 dev_priv->color_fmt = R128_DATATYPE_ARGB8888; 430 break; 431 } 432 dev_priv->front_offset = init->front_offset; 433 dev_priv->front_pitch = init->front_pitch; 434 dev_priv->back_offset = init->back_offset; 435 dev_priv->back_pitch = init->back_pitch; 436 437 switch (init->depth_bpp) { 438 case 16: 439 dev_priv->depth_fmt = R128_DATATYPE_RGB565; 440 break; 441 case 24: 442 case 32: 443 default: 444 dev_priv->depth_fmt = R128_DATATYPE_ARGB8888; 445 break; 446 } 447 dev_priv->depth_offset = init->depth_offset; 448 dev_priv->depth_pitch = init->depth_pitch; 449 dev_priv->span_offset = init->span_offset; 450 451 dev_priv->front_pitch_offset_c = (((dev_priv->front_pitch / 8) << 21) | 452 (dev_priv->front_offset >> 5)); 453 dev_priv->back_pitch_offset_c = (((dev_priv->back_pitch / 8) << 21) | 454 (dev_priv->back_offset >> 5)); 455 dev_priv->depth_pitch_offset_c = (((dev_priv->depth_pitch / 8) << 21) | 456 (dev_priv->depth_offset >> 5) | 457 R128_DST_TILE); 458 dev_priv->span_pitch_offset_c = (((dev_priv->depth_pitch / 8) << 21) | 459 (dev_priv->span_offset >> 5)); 460 461 dev_priv->sarea = drm_getsarea(dev); 462 if (!dev_priv->sarea) { 463 DRM_ERROR("could not find sarea!\n"); 464 dev->dev_private = (void *)dev_priv; 465 r128_do_cleanup_cce(dev); 466 return -EINVAL; 467 } 468 469 dev_priv->mmio = drm_core_findmap(dev, init->mmio_offset); 470 if (!dev_priv->mmio) { 471 DRM_ERROR("could not find mmio region!\n"); 472 dev->dev_private = (void *)dev_priv; 473 r128_do_cleanup_cce(dev); 474 return -EINVAL; 475 } 476 dev_priv->cce_ring = drm_core_findmap(dev, init->ring_offset); 477 if (!dev_priv->cce_ring) { 478 DRM_ERROR("could not find cce ring region!\n"); 479 dev->dev_private = (void *)dev_priv; 480 r128_do_cleanup_cce(dev); 481 return -EINVAL; 482 } 483 dev_priv->ring_rptr = drm_core_findmap(dev, init->ring_rptr_offset); 484 if (!dev_priv->ring_rptr) { 485 DRM_ERROR("could not find ring read pointer!\n"); 486 dev->dev_private = (void *)dev_priv; 487 r128_do_cleanup_cce(dev); 488 return -EINVAL; 489 } 490 dev->agp_buffer_token = init->buffers_offset; 491 dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset); 492 if (!dev->agp_buffer_map) { 493 DRM_ERROR("could not find dma buffer region!\n"); 494 dev->dev_private = (void *)dev_priv; 495 r128_do_cleanup_cce(dev); 496 return -EINVAL; 497 } 498 499 if (!dev_priv->is_pci) { 500 dev_priv->agp_textures = 501 drm_core_findmap(dev, init->agp_textures_offset); 502 if (!dev_priv->agp_textures) { 503 DRM_ERROR("could not find agp texture region!\n"); 504 dev->dev_private = (void *)dev_priv; 505 r128_do_cleanup_cce(dev); 506 return -EINVAL; 507 } 508 } 509 510 dev_priv->sarea_priv = 511 (drm_r128_sarea_t *) ((u8 *) dev_priv->sarea->virtual + 512 init->sarea_priv_offset); 513 514 #if __OS_HAS_AGP 515 if (!dev_priv->is_pci) { 516 drm_core_ioremap(dev_priv->cce_ring, dev); 517 drm_core_ioremap(dev_priv->ring_rptr, dev); 518 drm_core_ioremap(dev->agp_buffer_map, dev); 519 if (!dev_priv->cce_ring->virtual || 520 !dev_priv->ring_rptr->virtual || 521 !dev->agp_buffer_map->virtual) { 522 DRM_ERROR("Could not ioremap agp regions!\n"); 523 dev->dev_private = (void *)dev_priv; 524 r128_do_cleanup_cce(dev); 525 return -ENOMEM; 526 } 527 } else 528 #endif 529 { 530 dev_priv->cce_ring->virtual = 531 (void *)dev_priv->cce_ring->offset; 532 dev_priv->ring_rptr->virtual = 533 (void *)dev_priv->ring_rptr->offset; 534 dev->agp_buffer_map->virtual = 535 (void *)dev->agp_buffer_map->offset; 536 } 537 538 #if __OS_HAS_AGP 539 if (!dev_priv->is_pci) 540 dev_priv->cce_buffers_offset = dev->agp->base; 541 else 542 #endif 543 dev_priv->cce_buffers_offset = dev->sg->vaddr; 544 545 dev_priv->ring.start = (u32 *) dev_priv->cce_ring->virtual; 546 dev_priv->ring.end = ((u32 *) dev_priv->cce_ring->virtual 547 + init->ring_size / sizeof(u32)); 548 dev_priv->ring.size = init->ring_size; 549 dev_priv->ring.size_l2qw = drm_order(init->ring_size / 8); 550 551 dev_priv->ring.tail_mask = (dev_priv->ring.size / sizeof(u32)) - 1; 552 553 dev_priv->ring.high_mark = 128; 554 555 dev_priv->sarea_priv->last_frame = 0; 556 R128_WRITE(R128_LAST_FRAME_REG, dev_priv->sarea_priv->last_frame); 557 558 dev_priv->sarea_priv->last_dispatch = 0; 559 R128_WRITE(R128_LAST_DISPATCH_REG, dev_priv->sarea_priv->last_dispatch); 560 561 #if __OS_HAS_AGP 562 if (dev_priv->is_pci) { 563 #endif 564 dev_priv->gart_info.table_mask = DMA_BIT_MASK(32); 565 dev_priv->gart_info.gart_table_location = DRM_ATI_GART_MAIN; 566 dev_priv->gart_info.table_size = R128_PCIGART_TABLE_SIZE; 567 dev_priv->gart_info.addr = NULL; 568 dev_priv->gart_info.bus_addr = 0; 569 dev_priv->gart_info.gart_reg_if = DRM_ATI_GART_PCI; 570 if (!drm_ati_pcigart_init(dev, &dev_priv->gart_info)) { 571 DRM_ERROR("failed to init PCI GART!\n"); 572 dev->dev_private = (void *)dev_priv; 573 r128_do_cleanup_cce(dev); 574 return -ENOMEM; 575 } 576 R128_WRITE(R128_PCI_GART_PAGE, dev_priv->gart_info.bus_addr); 577 #if __OS_HAS_AGP 578 } 579 #endif 580 581 r128_cce_init_ring_buffer(dev, dev_priv); 582 r128_cce_load_microcode(dev_priv); 583 584 dev->dev_private = (void *)dev_priv; 585 586 r128_do_engine_reset(dev); 587 588 return 0; 589 } 590 591 int r128_do_cleanup_cce(struct drm_device * dev) 592 { 593 594 /* Make sure interrupts are disabled here because the uninstall ioctl 595 * may not have been called from userspace and after dev_private 596 * is freed, it's too late. 597 */ 598 if (dev->irq_enabled) 599 drm_irq_uninstall(dev); 600 601 if (dev->dev_private) { 602 drm_r128_private_t *dev_priv = dev->dev_private; 603 604 #if __OS_HAS_AGP 605 if (!dev_priv->is_pci) { 606 if (dev_priv->cce_ring != NULL) 607 drm_core_ioremapfree(dev_priv->cce_ring, dev); 608 if (dev_priv->ring_rptr != NULL) 609 drm_core_ioremapfree(dev_priv->ring_rptr, dev); 610 if (dev->agp_buffer_map != NULL) { 611 drm_core_ioremapfree(dev->agp_buffer_map, dev); 612 dev->agp_buffer_map = NULL; 613 } 614 } else 615 #endif 616 { 617 if (dev_priv->gart_info.bus_addr) 618 if (!drm_ati_pcigart_cleanup(dev, &dev_priv->gart_info)) 619 DRM_ERROR("failed to cleanup PCI GART!\n"); 620 } 621 622 drm_free(dev->dev_private, sizeof(drm_r128_private_t), 623 DRM_MEM_DRIVER); 624 dev->dev_private = NULL; 625 } 626 627 return 0; 628 } 629 630 int r128_cce_init(struct drm_device *dev, void *data, struct drm_file *file_priv) 631 { 632 drm_r128_init_t *init = data; 633 634 DRM_DEBUG("\n"); 635 636 LOCK_TEST_WITH_RETURN(dev, file_priv); 637 638 switch (init->func) { 639 case R128_INIT_CCE: 640 return r128_do_init_cce(dev, init); 641 case R128_CLEANUP_CCE: 642 return r128_do_cleanup_cce(dev); 643 } 644 645 return -EINVAL; 646 } 647 648 int r128_cce_start(struct drm_device *dev, void *data, struct drm_file *file_priv) 649 { 650 drm_r128_private_t *dev_priv = dev->dev_private; 651 DRM_DEBUG("\n"); 652 653 LOCK_TEST_WITH_RETURN(dev, file_priv); 654 655 if (dev_priv->cce_running || dev_priv->cce_mode == R128_PM4_NONPM4) { 656 DRM_DEBUG("while CCE running\n"); 657 return 0; 658 } 659 660 r128_do_cce_start(dev_priv); 661 662 return 0; 663 } 664 665 /* Stop the CCE. The engine must have been idled before calling this 666 * routine. 667 */ 668 int r128_cce_stop(struct drm_device *dev, void *data, struct drm_file *file_priv) 669 { 670 drm_r128_private_t *dev_priv = dev->dev_private; 671 drm_r128_cce_stop_t *stop = data; 672 int ret; 673 DRM_DEBUG("\n"); 674 675 LOCK_TEST_WITH_RETURN(dev, file_priv); 676 677 /* Flush any pending CCE commands. This ensures any outstanding 678 * commands are exectuted by the engine before we turn it off. 679 */ 680 if (stop->flush) { 681 r128_do_cce_flush(dev_priv); 682 } 683 684 /* If we fail to make the engine go idle, we return an error 685 * code so that the DRM ioctl wrapper can try again. 686 */ 687 if (stop->idle) { 688 ret = r128_do_cce_idle(dev_priv); 689 if (ret) 690 return ret; 691 } 692 693 /* Finally, we can turn off the CCE. If the engine isn't idle, 694 * we will get some dropped triangles as they won't be fully 695 * rendered before the CCE is shut down. 696 */ 697 r128_do_cce_stop(dev_priv); 698 699 /* Reset the engine */ 700 r128_do_engine_reset(dev); 701 702 return 0; 703 } 704 705 /* Just reset the CCE ring. Called as part of an X Server engine reset. 706 */ 707 int r128_cce_reset(struct drm_device *dev, void *data, struct drm_file *file_priv) 708 { 709 drm_r128_private_t *dev_priv = dev->dev_private; 710 DRM_DEBUG("\n"); 711 712 LOCK_TEST_WITH_RETURN(dev, file_priv); 713 714 if (!dev_priv) { 715 DRM_DEBUG("called before init done\n"); 716 return -EINVAL; 717 } 718 719 r128_do_cce_reset(dev_priv); 720 721 /* The CCE is no longer running after an engine reset */ 722 dev_priv->cce_running = 0; 723 724 return 0; 725 } 726 727 int r128_cce_idle(struct drm_device *dev, void *data, struct drm_file *file_priv) 728 { 729 drm_r128_private_t *dev_priv = dev->dev_private; 730 DRM_DEBUG("\n"); 731 732 LOCK_TEST_WITH_RETURN(dev, file_priv); 733 734 if (dev_priv->cce_running) { 735 r128_do_cce_flush(dev_priv); 736 } 737 738 return r128_do_cce_idle(dev_priv); 739 } 740 741 int r128_engine_reset(struct drm_device *dev, void *data, struct drm_file *file_priv) 742 { 743 DRM_DEBUG("\n"); 744 745 LOCK_TEST_WITH_RETURN(dev, file_priv); 746 747 return r128_do_engine_reset(dev); 748 } 749 750 int r128_fullscreen(struct drm_device *dev, void *data, struct drm_file *file_priv) 751 { 752 return -EINVAL; 753 } 754 755 /* ================================================================ 756 * Freelist management 757 */ 758 #define R128_BUFFER_USED 0xffffffff 759 #define R128_BUFFER_FREE 0 760 761 #if 0 762 static int r128_freelist_init(struct drm_device * dev) 763 { 764 struct drm_device_dma *dma = dev->dma; 765 drm_r128_private_t *dev_priv = dev->dev_private; 766 struct drm_buf *buf; 767 drm_r128_buf_priv_t *buf_priv; 768 drm_r128_freelist_t *entry; 769 int i; 770 771 dev_priv->head = drm_alloc(sizeof(drm_r128_freelist_t), DRM_MEM_DRIVER); 772 if (dev_priv->head == NULL) 773 return -ENOMEM; 774 775 memset(dev_priv->head, 0, sizeof(drm_r128_freelist_t)); 776 dev_priv->head->age = R128_BUFFER_USED; 777 778 for (i = 0; i < dma->buf_count; i++) { 779 buf = dma->buflist[i]; 780 buf_priv = buf->dev_private; 781 782 entry = drm_alloc(sizeof(drm_r128_freelist_t), DRM_MEM_DRIVER); 783 if (!entry) 784 return -ENOMEM; 785 786 entry->age = R128_BUFFER_FREE; 787 entry->buf = buf; 788 entry->prev = dev_priv->head; 789 entry->next = dev_priv->head->next; 790 if (!entry->next) 791 dev_priv->tail = entry; 792 793 buf_priv->discard = 0; 794 buf_priv->dispatched = 0; 795 buf_priv->list_entry = entry; 796 797 dev_priv->head->next = entry; 798 799 if (dev_priv->head->next) 800 dev_priv->head->next->prev = entry; 801 } 802 803 return 0; 804 805 } 806 #endif 807 808 static struct drm_buf *r128_freelist_get(struct drm_device * dev) 809 { 810 struct drm_device_dma *dma = dev->dma; 811 drm_r128_private_t *dev_priv = dev->dev_private; 812 drm_r128_buf_priv_t *buf_priv; 813 struct drm_buf *buf; 814 int i, t; 815 816 /* FIXME: Optimize -- use freelist code */ 817 818 for (i = 0; i < dma->buf_count; i++) { 819 buf = dma->buflist[i]; 820 buf_priv = buf->dev_private; 821 if (buf->file_priv == 0) 822 return buf; 823 } 824 825 for (t = 0; t < dev_priv->usec_timeout; t++) { 826 u32 done_age = R128_READ(R128_LAST_DISPATCH_REG); 827 828 for (i = 0; i < dma->buf_count; i++) { 829 buf = dma->buflist[i]; 830 buf_priv = buf->dev_private; 831 if (buf->pending && buf_priv->age <= done_age) { 832 /* The buffer has been processed, so it 833 * can now be used. 834 */ 835 buf->pending = 0; 836 return buf; 837 } 838 } 839 DRM_UDELAY(1); 840 } 841 842 DRM_DEBUG("returning NULL!\n"); 843 return NULL; 844 } 845 846 void r128_freelist_reset(struct drm_device * dev) 847 { 848 struct drm_device_dma *dma = dev->dma; 849 int i; 850 851 for (i = 0; i < dma->buf_count; i++) { 852 struct drm_buf *buf = dma->buflist[i]; 853 drm_r128_buf_priv_t *buf_priv = buf->dev_private; 854 buf_priv->age = 0; 855 } 856 } 857 858 /* ================================================================ 859 * CCE command submission 860 */ 861 862 int r128_wait_ring(drm_r128_private_t * dev_priv, int n) 863 { 864 drm_r128_ring_buffer_t *ring = &dev_priv->ring; 865 int i; 866 867 for (i = 0; i < dev_priv->usec_timeout; i++) { 868 r128_update_ring_snapshot(dev_priv); 869 if (ring->space >= n) 870 return 0; 871 DRM_UDELAY(1); 872 } 873 874 /* FIXME: This is being ignored... */ 875 DRM_ERROR("failed!\n"); 876 return -EBUSY; 877 } 878 879 static int r128_cce_get_buffers(struct drm_device * dev, 880 struct drm_file *file_priv, 881 struct drm_dma * d) 882 { 883 int i; 884 struct drm_buf *buf; 885 886 for (i = d->granted_count; i < d->request_count; i++) { 887 buf = r128_freelist_get(dev); 888 if (!buf) 889 return -EAGAIN; 890 891 buf->file_priv = file_priv; 892 893 if (DRM_COPY_TO_USER(&d->request_indices[i], &buf->idx, 894 sizeof(buf->idx))) 895 return -EFAULT; 896 if (DRM_COPY_TO_USER(&d->request_sizes[i], &buf->total, 897 sizeof(buf->total))) 898 return -EFAULT; 899 900 d->granted_count++; 901 } 902 return 0; 903 } 904 905 int r128_cce_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv) 906 { 907 struct drm_device_dma *dma = dev->dma; 908 int ret = 0; 909 struct drm_dma *d = data; 910 911 LOCK_TEST_WITH_RETURN(dev, file_priv); 912 913 /* Please don't send us buffers. 914 */ 915 if (d->send_count != 0) { 916 DRM_ERROR("Process %d trying to send %d buffers via drmDMA\n", 917 DRM_CURRENTPID, d->send_count); 918 return -EINVAL; 919 } 920 921 /* We'll send you buffers. 922 */ 923 if (d->request_count < 0 || d->request_count > dma->buf_count) { 924 DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n", 925 DRM_CURRENTPID, d->request_count, dma->buf_count); 926 return -EINVAL; 927 } 928 929 d->granted_count = 0; 930 931 if (d->request_count) { 932 ret = r128_cce_get_buffers(dev, file_priv, d); 933 } 934 935 return ret; 936 }
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