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