1 /* BEGIN CSTYLED */ 2 3 /* i915_dma.c -- DMA support for the I915 -*- linux-c -*- 4 */ 5 /* 6 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. 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 11 * "Software"), to deal in the Software without restriction, including 12 * without limitation the rights to use, copy, modify, merge, publish, 13 * distribute, sub license, and/or sell copies of the Software, and to 14 * permit persons to whom the Software is furnished to do so, subject to 15 * the following conditions: 16 * 17 * The above copyright notice and this permission notice (including the 18 * next paragraph) shall be included in all copies or substantial portions 19 * of the Software. 20 * 21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 22 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 24 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 25 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 26 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 27 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 28 * 29 */ 30 31 /* 32 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 33 * Use is subject to license terms. 34 */ 35 36 #include "drmP.h" 37 #include "drm.h" 38 #include "i915_drm.h" 39 #include "i915_drv.h" 40 41 42 43 /* Really want an OS-independent resettable timer. Would like to have 44 * this loop run for (eg) 3 sec, but have the timer reset every time 45 * the head pointer changes, so that EBUSY only happens if the ring 46 * actually stalls for (eg) 3 seconds. 47 */ 48 /*ARGSUSED*/ 49 int i915_wait_ring(drm_device_t * dev, int n, const char *caller) 50 { 51 drm_i915_private_t *dev_priv = dev->dev_private; 52 drm_i915_ring_buffer_t *ring = &(dev_priv->ring); 53 u32 last_head = I915_READ(PRB0_HEAD) & HEAD_ADDR; 54 u32 acthd_reg = IS_I965G(dev) ? ACTHD_I965 : ACTHD; 55 u32 last_acthd = I915_READ(acthd_reg); 56 u32 acthd; 57 int i; 58 59 for (i = 0; i < 100000; i++) { 60 ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR; 61 acthd = I915_READ(acthd_reg); 62 ring->space = ring->head - (ring->tail + 8); 63 if (ring->space < 0) 64 ring->space += ring->Size; 65 if (ring->space >= n) 66 return 0; 67 68 if (ring->head != last_head) 69 i = 0; 70 71 if (acthd != last_acthd) 72 i = 0; 73 74 last_head = ring->head; 75 last_acthd = acthd; 76 DRM_UDELAY(10); 77 } 78 79 return (EBUSY); 80 } 81 82 int i915_init_hardware_status(drm_device_t *dev) 83 { 84 drm_i915_private_t *dev_priv = dev->dev_private; 85 drm_dma_handle_t *dmah; 86 87 /* Program Hardware Status Page */ 88 dmah = drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff,1); 89 90 if (!dmah) { 91 DRM_ERROR("Can not allocate hardware status page\n"); 92 return -ENOMEM; 93 } 94 95 dev_priv->status_page_dmah = dmah; 96 dev_priv->hw_status_page = (void *)dmah->vaddr; 97 dev_priv->dma_status_page = dmah->paddr; 98 99 (void) memset(dev_priv->hw_status_page, 0, PAGE_SIZE); 100 101 I915_WRITE(HWS_PGA, dev_priv->dma_status_page); 102 DRM_DEBUG("Enabled hardware status page\n"); 103 return 0; 104 } 105 106 void i915_free_hardware_status(drm_device_t *dev) 107 { 108 drm_i915_private_t *dev_priv = dev->dev_private; 109 if (!I915_NEED_GFX_HWS(dev)) { 110 if (dev_priv->status_page_dmah) { 111 drm_pci_free(dev, dev_priv->status_page_dmah); 112 dev_priv->status_page_dmah = NULL; 113 /* Need to rewrite hardware status page */ 114 I915_WRITE(HWS_PGA, 0x1ffff000); 115 } 116 } else { 117 if (dev_priv->status_gfx_addr) { 118 dev_priv->status_gfx_addr = 0; 119 drm_core_ioremapfree(&dev_priv->hws_map, dev); 120 I915_WRITE(HWS_PGA, 0x1ffff000); 121 } 122 } 123 } 124 125 #if I915_RING_VALIDATE 126 /** 127 * Validate the cached ring tail value 128 * 129 * If the X server writes to the ring and DRM doesn't 130 * reload the head and tail pointers, it will end up writing 131 * data to the wrong place in the ring, causing havoc. 132 */ 133 void i915_ring_validate(struct drm_device *dev, const char *func, int line) 134 { 135 drm_i915_private_t *dev_priv = dev->dev_private; 136 drm_i915_ring_buffer_t *ring = &(dev_priv->ring); 137 u32 tail = I915_READ(PRB0_TAIL) & HEAD_ADDR; 138 u32 head = I915_READ(PRB0_HEAD) & HEAD_ADDR; 139 140 if (tail != ring->tail) { 141 DRM_ERROR("%s:%d head sw %x, hw %x. tail sw %x hw %x\n", 142 func, line, 143 ring->head, head, ring->tail, tail); 144 } 145 } 146 #endif 147 148 void i915_kernel_lost_context(drm_device_t * dev) 149 { 150 drm_i915_private_t *dev_priv = dev->dev_private; 151 drm_i915_ring_buffer_t *ring = &(dev_priv->ring); 152 153 ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR; 154 ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR; 155 ring->space = ring->head - (ring->tail + 8); 156 if (ring->space < 0) 157 ring->space += ring->Size; 158 159 } 160 161 static int i915_dma_cleanup(drm_device_t * dev) 162 { 163 drm_i915_private_t *dev_priv = 164 (drm_i915_private_t *) dev->dev_private; 165 166 /* Make sure interrupts are disabled here because the uninstall ioctl 167 * may not have been called from userspace and after dev_private 168 * is freed, it's too late. 169 */ 170 if (dev->irq_enabled) 171 (void) drm_irq_uninstall(dev); 172 173 if (dev_priv->ring.virtual_start) { 174 drm_core_ioremapfree(&dev_priv->ring.map, dev); 175 dev_priv->ring.virtual_start = 0; 176 dev_priv->ring.map.handle = 0; 177 dev_priv->ring.map.size = 0; 178 } 179 180 i915_free_hardware_status(dev); 181 182 dev_priv->sarea = NULL; 183 dev_priv->sarea_priv = NULL; 184 185 return 0; 186 } 187 188 static int i915_initialize(drm_device_t * dev, 189 drm_i915_init_t * init) 190 { 191 drm_i915_private_t *dev_priv = 192 (drm_i915_private_t *)dev->dev_private; 193 194 DRM_GETSAREA(); 195 if (!dev_priv->sarea) { 196 DRM_ERROR("can not find sarea!\n"); 197 dev->dev_private = (void *)dev_priv; 198 (void) i915_dma_cleanup(dev); 199 return (EINVAL); 200 } 201 202 /* 203 * mmio_map will be destoried after DMA clean up. We should not 204 * access mmio_map in suspend or resume process. 205 */ 206 207 dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset); 208 209 if (!dev_priv->mmio_map) { 210 dev->dev_private = (void *)dev_priv; 211 (void) i915_dma_cleanup(dev); 212 DRM_ERROR("can not find mmio map!\n"); 213 return (EINVAL); 214 } 215 216 if (init->sarea_priv_offset) 217 dev_priv->sarea_priv = (drm_i915_sarea_t *) 218 ((unsigned long) dev_priv->sarea->handle + 219 init->sarea_priv_offset); 220 else { 221 /* No sarea_priv for you! */ 222 dev_priv->sarea_priv = NULL; 223 } 224 225 if (init->ring_size != 0) { 226 dev_priv->ring.Size = init->ring_size; 227 dev_priv->ring.tail_mask = dev_priv->ring.Size - 1; 228 229 dev_priv->ring.map.offset = (u_offset_t)init->ring_start; 230 dev_priv->ring.map.size = init->ring_size; 231 dev_priv->ring.map.type = 0; 232 dev_priv->ring.map.flags = 0; 233 dev_priv->ring.map.mtrr = 0; 234 235 drm_core_ioremap(&dev_priv->ring.map, dev); 236 237 if (dev_priv->ring.map.handle == NULL) { 238 (void) i915_dma_cleanup(dev); 239 DRM_ERROR("can not ioremap virtual address for" 240 " ring buffer\n"); 241 return (ENOMEM); 242 } 243 244 dev_priv->ring.virtual_start = (u8 *)dev_priv->ring.map.dev_addr; 245 } 246 247 dev_priv->cpp = init->cpp; 248 249 if (dev_priv->sarea_priv) 250 dev_priv->sarea_priv->pf_current_page = 0; 251 252 /* We are using separate values as placeholders for mechanisms for 253 * private backbuffer/depthbuffer usage. 254 */ 255 256 /* Allow hardware batchbuffers unless told otherwise. 257 */ 258 dev_priv->allow_batchbuffer = 1; 259 260 /* Init HWS */ 261 if (!I915_NEED_GFX_HWS(dev)) { 262 (void) i915_init_hardware_status(dev); 263 } 264 265 /* Enable vblank on pipe A for older X servers 266 */ 267 dev_priv->vblank_pipe = DRM_I915_VBLANK_PIPE_A; 268 269 #ifdef I915_HAVE_BUFFER 270 drm_bo_driver_init(dev); 271 #endif 272 return 0; 273 } 274 275 static int i915_dma_resume(drm_device_t * dev) 276 { 277 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; 278 279 DRM_DEBUG("i915_dma_resume\n"); 280 281 if (!dev_priv->sarea) { 282 DRM_ERROR("can not find sarea!\n"); 283 return (EINVAL); 284 } 285 286 if (dev_priv->ring.map.handle == NULL) { 287 DRM_ERROR("can not ioremap virtual address for" 288 " ring buffer\n"); 289 return (ENOMEM); 290 } 291 292 /* Program Hardware Status Page */ 293 if (!dev_priv->hw_status_page) { 294 DRM_ERROR("Can not find hardware status page\n"); 295 return (EINVAL); 296 } 297 DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page); 298 299 if (!I915_NEED_GFX_HWS(dev)) 300 I915_WRITE(HWS_PGA, dev_priv->dma_status_page); 301 else 302 I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr); 303 DRM_DEBUG("Enabled hardware status page\n"); 304 305 return 0; 306 } 307 308 /*ARGSUSED*/ 309 static int i915_dma_init(DRM_IOCTL_ARGS) 310 { 311 DRM_DEVICE; 312 drm_i915_init_t init; 313 int retcode = 0; 314 315 DRM_COPYFROM_WITH_RETURN(&init, (drm_i915_init_t *)data, sizeof(init)); 316 317 switch (init.func) { 318 case I915_INIT_DMA: 319 retcode = i915_initialize(dev, &init); 320 break; 321 case I915_CLEANUP_DMA: 322 retcode = i915_dma_cleanup(dev); 323 break; 324 case I915_RESUME_DMA: 325 retcode = i915_dma_resume(dev); 326 break; 327 default: 328 retcode = EINVAL; 329 break; 330 } 331 332 return retcode; 333 } 334 335 /* Implement basically the same security restrictions as hardware does 336 * for MI_BATCH_NON_SECURE. These can be made stricter at any time. 337 * 338 * Most of the calculations below involve calculating the size of a 339 * particular instruction. It's important to get the size right as 340 * that tells us where the next instruction to check is. Any illegal 341 * instruction detected will be given a size of zero, which is a 342 * signal to abort the rest of the buffer. 343 */ 344 static int do_validate_cmd(int cmd) 345 { 346 switch (((cmd >> 29) & 0x7)) { 347 case 0x0: 348 switch ((cmd >> 23) & 0x3f) { 349 case 0x0: 350 return 1; /* MI_NOOP */ 351 case 0x4: 352 return 1; /* MI_FLUSH */ 353 default: 354 return 0; /* disallow everything else */ 355 } 356 #ifndef __SUNPRO_C 357 break; 358 #endif 359 case 0x1: 360 return 0; /* reserved */ 361 case 0x2: 362 return (cmd & 0xff) + 2; /* 2d commands */ 363 case 0x3: 364 if (((cmd >> 24) & 0x1f) <= 0x18) 365 return 1; 366 367 switch ((cmd >> 24) & 0x1f) { 368 case 0x1c: 369 return 1; 370 case 0x1d: 371 switch ((cmd >> 16) & 0xff) { 372 case 0x3: 373 return (cmd & 0x1f) + 2; 374 case 0x4: 375 return (cmd & 0xf) + 2; 376 default: 377 return (cmd & 0xffff) + 2; 378 } 379 case 0x1e: 380 if (cmd & (1 << 23)) 381 return (cmd & 0xffff) + 1; 382 else 383 return 1; 384 case 0x1f: 385 if ((cmd & (1 << 23)) == 0) /* inline vertices */ 386 return (cmd & 0x1ffff) + 2; 387 else if (cmd & (1 << 17)) /* indirect random */ 388 if ((cmd & 0xffff) == 0) 389 return 0; /* unknown length, too hard */ 390 else 391 return (((cmd & 0xffff) + 1) / 2) + 1; 392 else 393 return 2; /* indirect sequential */ 394 default: 395 return 0; 396 } 397 default: 398 return 0; 399 } 400 401 #ifndef __SUNPRO_C 402 return 0; 403 #endif 404 } 405 406 static int validate_cmd(int cmd) 407 { 408 int ret = do_validate_cmd(cmd); 409 410 /* printk("validate_cmd( %x ): %d\n", cmd, ret); */ 411 412 return ret; 413 } 414 415 static int i915_emit_cmds(drm_device_t * dev, int __user * buffer, int dwords) 416 { 417 drm_i915_private_t *dev_priv = dev->dev_private; 418 int i; 419 RING_LOCALS; 420 421 if ((dwords+1) * sizeof(int) >= dev_priv->ring.Size - 8) 422 return (EINVAL); 423 424 BEGIN_LP_RING((dwords+1)&~1); 425 426 for (i = 0; i < dwords;) { 427 int cmd, sz; 428 429 if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i], sizeof(cmd))) 430 return (EINVAL); 431 432 433 if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords) 434 return (EINVAL); 435 436 OUT_RING(cmd); 437 438 while (++i, --sz) { 439 if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i], 440 sizeof(cmd))) { 441 return (EINVAL); 442 } 443 OUT_RING(cmd); 444 } 445 } 446 447 if (dwords & 1) 448 OUT_RING(0); 449 450 ADVANCE_LP_RING(); 451 452 return 0; 453 } 454 455 int i915_emit_box(drm_device_t * dev, 456 drm_clip_rect_t __user * boxes, 457 int i, int DR1, int DR4) 458 { 459 drm_i915_private_t *dev_priv = dev->dev_private; 460 drm_clip_rect_t box; 461 RING_LOCALS; 462 463 if (DRM_COPY_FROM_USER_UNCHECKED(&box, &boxes[i], sizeof(box))) { 464 return (EFAULT); 465 } 466 467 if (box.y2 <= box.y1 || box.x2 <= box.x1) { 468 DRM_ERROR("Bad box %d,%d..%d,%d\n", 469 box.x1, box.y1, box.x2, box.y2); 470 return (EINVAL); 471 } 472 473 if (IS_I965G(dev)) { 474 BEGIN_LP_RING(4); 475 OUT_RING(GFX_OP_DRAWRECT_INFO_I965); 476 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16)); 477 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16)); 478 OUT_RING(DR4); 479 ADVANCE_LP_RING(); 480 } else { 481 BEGIN_LP_RING(6); 482 OUT_RING(GFX_OP_DRAWRECT_INFO); 483 OUT_RING(DR1); 484 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16)); 485 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16)); 486 OUT_RING(DR4); 487 OUT_RING(0); 488 ADVANCE_LP_RING(); 489 } 490 491 return 0; 492 } 493 494 /* XXX: Emitting the counter should really be moved to part of the IRQ 495 * emit. For now, do it in both places: 496 */ 497 498 void i915_emit_breadcrumb(drm_device_t *dev) 499 { 500 drm_i915_private_t *dev_priv = dev->dev_private; 501 RING_LOCALS; 502 503 if (++dev_priv->counter > BREADCRUMB_MASK) { 504 dev_priv->counter = 1; 505 DRM_DEBUG("Breadcrumb counter wrapped around\n"); 506 } 507 508 if (dev_priv->sarea_priv) 509 dev_priv->sarea_priv->last_enqueue = dev_priv->counter; 510 511 512 BEGIN_LP_RING(4); 513 OUT_RING(MI_STORE_DWORD_INDEX); 514 OUT_RING(5 << MI_STORE_DWORD_INDEX_SHIFT); 515 OUT_RING(dev_priv->counter); 516 OUT_RING(0); 517 ADVANCE_LP_RING(); 518 519 } 520 521 522 void i915_emit_mi_flush(drm_device_t *dev, uint32_t flush) 523 { 524 drm_i915_private_t *dev_priv = dev->dev_private; 525 uint32_t flush_cmd = MI_FLUSH; 526 RING_LOCALS; 527 528 flush_cmd |= flush; 529 530 i915_kernel_lost_context(dev); 531 532 BEGIN_LP_RING(4); 533 OUT_RING(flush_cmd); 534 OUT_RING(0); 535 OUT_RING(0); 536 OUT_RING(0); 537 ADVANCE_LP_RING(); 538 } 539 540 static int i915_dispatch_cmdbuffer(drm_device_t * dev, 541 drm_i915_cmdbuffer_t * cmd) 542 { 543 #ifdef I915_HAVE_FENCE 544 drm_i915_private_t *dev_priv = dev->dev_private; 545 #endif 546 int nbox = cmd->num_cliprects; 547 int i = 0, count, ret; 548 549 if (cmd->sz & 0x3) { 550 DRM_ERROR("alignment"); 551 return (EINVAL); 552 } 553 554 i915_kernel_lost_context(dev); 555 556 count = nbox ? nbox : 1; 557 558 for (i = 0; i < count; i++) { 559 if (i < nbox) { 560 ret = i915_emit_box(dev, cmd->cliprects, i, 561 cmd->DR1, cmd->DR4); 562 if (ret) 563 return ret; 564 } 565 566 ret = i915_emit_cmds(dev, (int __user *)(void *)cmd->buf, cmd->sz / 4); 567 if (ret) 568 return ret; 569 } 570 571 i915_emit_breadcrumb( dev ); 572 #ifdef I915_HAVE_FENCE 573 if (unlikely((dev_priv->counter & 0xFF) == 0)) 574 drm_fence_flush_old(dev, 0, dev_priv->counter); 575 #endif 576 return 0; 577 } 578 579 static int i915_dispatch_batchbuffer(drm_device_t * dev, 580 drm_i915_batchbuffer_t * batch) 581 { 582 drm_i915_private_t *dev_priv = dev->dev_private; 583 drm_clip_rect_t __user *boxes = batch->cliprects; 584 int nbox = batch->num_cliprects; 585 int i = 0, count; 586 RING_LOCALS; 587 588 if ((batch->start | batch->used) & 0x7) { 589 DRM_ERROR("alignment"); 590 return (EINVAL); 591 } 592 593 i915_kernel_lost_context(dev); 594 595 count = nbox ? nbox : 1; 596 597 for (i = 0; i < count; i++) { 598 if (i < nbox) { 599 int ret = i915_emit_box(dev, boxes, i, 600 batch->DR1, batch->DR4); 601 if (ret) 602 return ret; 603 } 604 605 if (IS_I830(dev) || IS_845G(dev)) { 606 BEGIN_LP_RING(4); 607 OUT_RING(MI_BATCH_BUFFER); 608 OUT_RING(batch->start | MI_BATCH_NON_SECURE); 609 OUT_RING(batch->start + batch->used - 4); 610 OUT_RING(0); 611 ADVANCE_LP_RING(); 612 } else { 613 BEGIN_LP_RING(2); 614 if (IS_I965G(dev)) { 615 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965); 616 OUT_RING(batch->start); 617 } else { 618 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6)); 619 OUT_RING(batch->start | MI_BATCH_NON_SECURE); 620 } 621 ADVANCE_LP_RING(); 622 } 623 } 624 625 i915_emit_breadcrumb( dev ); 626 627 return 0; 628 } 629 630 static void i915_do_dispatch_flip(struct drm_device * dev, int plane, int sync) 631 { 632 drm_i915_private_t *dev_priv = dev->dev_private; 633 u32 num_pages, current_page, next_page, dspbase; 634 int shift = 2 * plane, x, y; 635 RING_LOCALS; 636 637 /* Calculate display base offset */ 638 num_pages = dev_priv->sarea_priv->third_handle ? 3 : 2; 639 current_page = (dev_priv->sarea_priv->pf_current_page >> shift) & 0x3; 640 next_page = (current_page + 1) % num_pages; 641 642 switch (next_page) { 643 default: 644 case 0: 645 dspbase = dev_priv->sarea_priv->front_offset; 646 break; 647 case 1: 648 dspbase = dev_priv->sarea_priv->back_offset; 649 break; 650 case 2: 651 dspbase = dev_priv->sarea_priv->third_offset; 652 break; 653 } 654 655 if (plane == 0) { 656 x = dev_priv->sarea_priv->planeA_x; 657 y = dev_priv->sarea_priv->planeA_y; 658 } else { 659 x = dev_priv->sarea_priv->planeB_x; 660 y = dev_priv->sarea_priv->planeB_y; 661 } 662 663 dspbase += (y * dev_priv->sarea_priv->pitch + x) * dev_priv->cpp; 664 665 666 DRM_DEBUG("plane=%d current_page=%d dspbase=0x%x\n", plane, current_page, dspbase); 667 668 BEGIN_LP_RING(4); 669 OUT_RING(sync ? 0 : 670 (MI_WAIT_FOR_EVENT | (plane ? MI_WAIT_FOR_PLANE_B_FLIP : 671 MI_WAIT_FOR_PLANE_A_FLIP))); 672 OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | (sync ? 0 : ASYNC_FLIP) | 673 (plane ? DISPLAY_PLANE_B : DISPLAY_PLANE_A)); 674 OUT_RING(dev_priv->sarea_priv->pitch * dev_priv->cpp); 675 OUT_RING(dspbase); 676 ADVANCE_LP_RING(); 677 678 dev_priv->sarea_priv->pf_current_page &= ~(0x3 << shift); 679 dev_priv->sarea_priv->pf_current_page |= next_page << shift; 680 } 681 682 void i915_dispatch_flip(struct drm_device * dev, int planes, int sync) 683 { 684 drm_i915_private_t *dev_priv = dev->dev_private; 685 int i; 686 687 DRM_DEBUG("planes=0x%x pfCurrentPage=%d\n", 688 planes, dev_priv->sarea_priv->pf_current_page); 689 690 i915_emit_mi_flush(dev, MI_READ_FLUSH | MI_EXE_FLUSH); 691 692 for (i = 0; i < 2; i++) 693 if (planes & (1 << i)) 694 i915_do_dispatch_flip(dev, i, sync); 695 696 i915_emit_breadcrumb(dev); 697 #ifdef I915_HAVE_FENCE 698 if (unlikely(!sync && ((dev_priv->counter & 0xFF) == 0))) 699 drm_fence_flush_old(dev, 0, dev_priv->counter); 700 #endif 701 702 } 703 704 static int i915_quiescent(drm_device_t * dev) 705 { 706 drm_i915_private_t *dev_priv = dev->dev_private; 707 int ret; 708 i915_kernel_lost_context(dev); 709 ret = i915_wait_ring(dev, dev_priv->ring.Size - 8, __FUNCTION__); 710 711 if (ret) 712 { 713 i915_kernel_lost_context (dev); 714 DRM_ERROR ("not quiescent head %08x tail %08x space %08x\n", 715 dev_priv->ring.head, 716 dev_priv->ring.tail, 717 dev_priv->ring.space); 718 } 719 return ret; 720 } 721 722 /*ARGSUSED*/ 723 static int i915_flush_ioctl(DRM_IOCTL_ARGS) 724 { 725 DRM_DEVICE; 726 727 LOCK_TEST_WITH_RETURN(dev, fpriv); 728 729 return i915_quiescent(dev); 730 } 731 732 /*ARGSUSED*/ 733 static int i915_batchbuffer(DRM_IOCTL_ARGS) 734 { 735 DRM_DEVICE; 736 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; 737 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *) 738 dev_priv->sarea_priv; 739 drm_i915_batchbuffer_t batch; 740 int ret; 741 742 if (!dev_priv->allow_batchbuffer) { 743 DRM_ERROR("Batchbuffer ioctl disabled\n"); 744 return (EINVAL); 745 } 746 747 if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) { 748 drm_i915_batchbuffer32_t batchbuffer32_t; 749 750 DRM_COPYFROM_WITH_RETURN(&batchbuffer32_t, 751 (void *) data, sizeof (batchbuffer32_t)); 752 753 batch.start = batchbuffer32_t.start; 754 batch.used = batchbuffer32_t.used; 755 batch.DR1 = batchbuffer32_t.DR1; 756 batch.DR4 = batchbuffer32_t.DR4; 757 batch.num_cliprects = batchbuffer32_t.num_cliprects; 758 batch.cliprects = (drm_clip_rect_t __user *) 759 (uintptr_t)batchbuffer32_t.cliprects; 760 } else 761 DRM_COPYFROM_WITH_RETURN(&batch, (void *) data, 762 sizeof(batch)); 763 764 765 DRM_DEBUG("i915 batchbuffer, start %x used %d cliprects %d, counter %d\n", 766 batch.start, batch.used, batch.num_cliprects, dev_priv->counter); 767 768 LOCK_TEST_WITH_RETURN(dev, fpriv); 769 770 /* 771 if (batch.num_cliprects && DRM_VERIFYAREA_READ(batch.cliprects, 772 batch.num_cliprects * 773 sizeof(drm_clip_rect_t))) 774 return (EFAULT); 775 */ 776 777 778 ret = i915_dispatch_batchbuffer(dev, &batch); 779 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); 780 781 return ret; 782 } 783 784 /*ARGSUSED*/ 785 static int i915_cmdbuffer(DRM_IOCTL_ARGS) 786 { 787 DRM_DEVICE; 788 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; 789 drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *) 790 dev_priv->sarea_priv; 791 drm_i915_cmdbuffer_t cmdbuf; 792 int ret; 793 794 if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) { 795 drm_i915_cmdbuffer32_t cmdbuffer32_t; 796 797 DRM_COPYFROM_WITH_RETURN(&cmdbuffer32_t, 798 (drm_i915_cmdbuffer32_t __user *) data, 799 sizeof (drm_i915_cmdbuffer32_t)); 800 801 cmdbuf.buf = (char __user *)(uintptr_t)cmdbuffer32_t.buf; 802 cmdbuf.sz = cmdbuffer32_t.sz; 803 cmdbuf.DR1 = cmdbuffer32_t.DR1; 804 cmdbuf.DR4 = cmdbuffer32_t.DR4; 805 cmdbuf.num_cliprects = cmdbuffer32_t.num_cliprects; 806 cmdbuf.cliprects = (drm_clip_rect_t __user *) 807 (uintptr_t)cmdbuffer32_t.cliprects; 808 } else 809 DRM_COPYFROM_WITH_RETURN(&cmdbuf, (void *) data, 810 sizeof(cmdbuf)); 811 812 DRM_DEBUG("i915 cmdbuffer, buf %p sz %d cliprects %d\n", 813 cmdbuf.buf, cmdbuf.sz, cmdbuf.num_cliprects); 814 815 LOCK_TEST_WITH_RETURN(dev, fpriv); 816 817 /* 818 if (cmdbuf.num_cliprects && 819 DRM_VERIFYAREA_READ(cmdbuf.cliprects, 820 cmdbuf.num_cliprects * 821 sizeof(drm_clip_rect_t))) { 822 DRM_ERROR("Fault accessing cliprects\n"); 823 return (EFAULT); 824 } 825 */ 826 827 ret = i915_dispatch_cmdbuffer(dev, &cmdbuf); 828 if (ret) { 829 DRM_ERROR("i915_dispatch_cmdbuffer failed\n"); 830 return ret; 831 } 832 833 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); 834 return 0; 835 } 836 837 static void i915_do_cleanup_pageflip(drm_device_t * dev) 838 { 839 drm_i915_private_t *dev_priv = dev->dev_private; 840 int i, planes, num_pages = dev_priv->sarea_priv->third_handle ? 3 : 2; 841 842 DRM_DEBUG("i915_do_cleanup_pageflip\n"); 843 844 for (i = 0, planes = 0; i < 2; i++) 845 if (dev_priv->sarea_priv->pf_current_page & (0x3 << (2 * i))) { 846 dev_priv->sarea_priv->pf_current_page = 847 (dev_priv->sarea_priv->pf_current_page & 848 ~(0x3 << (2 * i))) | ((num_pages - 1) << (2 * i)); 849 850 planes |= 1 << i; 851 } 852 853 if (planes) 854 i915_dispatch_flip(dev, planes, 0); 855 856 } 857 858 /*ARGSUSED*/ 859 static int i915_flip_bufs(DRM_IOCTL_ARGS) 860 { 861 DRM_DEVICE; 862 drm_i915_flip_t param; 863 DRM_COPYFROM_WITH_RETURN(¶m, (drm_i915_flip_t *) data, 864 sizeof(param)); 865 866 DRM_DEBUG("i915_flip_bufs\n"); 867 868 LOCK_TEST_WITH_RETURN(dev, fpriv); 869 /* This is really planes */ 870 if (param.pipes & ~0x3) { 871 DRM_ERROR("Invalid planes 0x%x, only <= 0x3 is valid\n", 872 param.pipes); 873 return -EINVAL; 874 } 875 i915_dispatch_flip(dev, param.pipes, 0); 876 return 0; 877 } 878 879 /*ARGSUSED*/ 880 static int i915_getparam(DRM_IOCTL_ARGS) 881 { 882 DRM_DEVICE; 883 drm_i915_private_t *dev_priv = dev->dev_private; 884 drm_i915_getparam_t param; 885 int value; 886 887 if (!dev_priv) { 888 DRM_ERROR("%s called with no initialization\n", __FUNCTION__); 889 return (EINVAL); 890 } 891 892 if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) { 893 drm_i915_getparam32_t getparam32_t; 894 895 DRM_COPYFROM_WITH_RETURN(&getparam32_t, 896 (drm_i915_getparam32_t __user *) data, 897 sizeof (drm_i915_getparam32_t)); 898 899 param.param = getparam32_t.param; 900 param.value = (int __user *)(uintptr_t)getparam32_t.value; 901 } else 902 DRM_COPYFROM_WITH_RETURN(¶m, 903 (drm_i915_getparam_t *) data, sizeof(param)); 904 905 switch (param.param) { 906 case I915_PARAM_IRQ_ACTIVE: 907 value = dev->irq_enabled ? 1 : 0; 908 break; 909 case I915_PARAM_ALLOW_BATCHBUFFER: 910 value = dev_priv->allow_batchbuffer ? 1 : 0; 911 break; 912 case I915_PARAM_LAST_DISPATCH: 913 value = READ_BREADCRUMB(dev_priv); 914 break; 915 case I915_PARAM_CHIPSET_ID: 916 value = dev->pci_device; 917 break; 918 default: 919 DRM_ERROR("Unknown parameter %d\n", param.param); 920 return (EINVAL); 921 } 922 923 if (DRM_COPY_TO_USER(param.value, &value, sizeof(int))) { 924 DRM_ERROR("i915_getparam failed\n"); 925 return (EFAULT); 926 } 927 return 0; 928 } 929 930 /*ARGSUSED*/ 931 static int i915_setparam(DRM_IOCTL_ARGS) 932 { 933 DRM_DEVICE; 934 drm_i915_private_t *dev_priv = dev->dev_private; 935 drm_i915_setparam_t param; 936 937 if (!dev_priv) { 938 DRM_ERROR("%s called with no initialization\n", __FUNCTION__); 939 return (EINVAL); 940 } 941 942 DRM_COPYFROM_WITH_RETURN(¶m, (drm_i915_setparam_t *) data, 943 sizeof(param)); 944 945 switch (param.param) { 946 case I915_SETPARAM_USE_MI_BATCHBUFFER_START: 947 break; 948 case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY: 949 dev_priv->tex_lru_log_granularity = param.value; 950 break; 951 case I915_SETPARAM_ALLOW_BATCHBUFFER: 952 dev_priv->allow_batchbuffer = param.value; 953 break; 954 default: 955 DRM_ERROR("unknown parameter %d\n", param.param); 956 return (EINVAL); 957 } 958 959 return 0; 960 } 961 962 /*ARGSUSED*/ 963 static int i915_set_status_page(DRM_IOCTL_ARGS) 964 { 965 DRM_DEVICE; 966 drm_i915_private_t *dev_priv = dev->dev_private; 967 drm_i915_hws_addr_t hws; 968 969 if (!I915_NEED_GFX_HWS(dev)) 970 return (EINVAL); 971 972 if (!dev_priv) { 973 DRM_ERROR("%s called with no initialization\n", __FUNCTION__); 974 return (EINVAL); 975 } 976 DRM_COPYFROM_WITH_RETURN(&hws, (drm_i915_hws_addr_t __user *) data, 977 sizeof(hws)); 978 DRM_DEBUG("set status page addr 0x%08x\n", (u32)hws.addr); 979 980 dev_priv->status_gfx_addr = hws.addr & (0x1ffff<<12); 981 DRM_DEBUG("set gfx_addr 0x%08x\n", dev_priv->status_gfx_addr); 982 983 dev_priv->hws_map.offset = 984 (u_offset_t)dev->agp->agp_info.agpi_aperbase + hws.addr; 985 dev_priv->hws_map.size = 4 * 1024; /* 4K pages */ 986 dev_priv->hws_map.type = 0; 987 dev_priv->hws_map.flags = 0; 988 dev_priv->hws_map.mtrr = 0; 989 990 DRM_DEBUG("set status page: i915_set_status_page: mapoffset 0x%llx\n", 991 dev_priv->hws_map.offset); 992 drm_core_ioremap(&dev_priv->hws_map, dev); 993 if (dev_priv->hws_map.handle == NULL) { 994 dev->dev_private = (void *)dev_priv; 995 (void) i915_dma_cleanup(dev); 996 dev_priv->status_gfx_addr = 0; 997 DRM_ERROR("can not ioremap virtual address for" 998 " G33 hw status page\n"); 999 return (ENOMEM); 1000 } 1001 dev_priv->hw_status_page = dev_priv->hws_map.dev_addr; 1002 1003 (void) memset(dev_priv->hw_status_page, 0, PAGE_SIZE); 1004 I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr); 1005 DRM_DEBUG("load hws 0x2080 with gfx mem 0x%x\n", 1006 dev_priv->status_gfx_addr); 1007 DRM_DEBUG("load hws at %p\n", dev_priv->hw_status_page); 1008 return 0; 1009 } 1010 1011 /*ARGSUSED*/ 1012 int i915_driver_load(drm_device_t *dev, unsigned long flags) 1013 { 1014 struct drm_i915_private *dev_priv; 1015 int ret = 0; 1016 1017 /* i915 has 4 more counters */ 1018 dev->counters += 4; 1019 dev->types[6] = _DRM_STAT_IRQ; 1020 dev->types[7] = _DRM_STAT_PRIMARY; 1021 dev->types[8] = _DRM_STAT_SECONDARY; 1022 dev->types[9] = _DRM_STAT_DMA; 1023 1024 dev_priv = drm_alloc(sizeof(drm_i915_private_t), DRM_MEM_DRIVER); 1025 if (dev_priv == NULL) 1026 return ENOMEM; 1027 1028 (void) memset(dev_priv, 0, sizeof(drm_i915_private_t)); 1029 dev->dev_private = (void *)dev_priv; 1030 dev_priv->dev = dev; 1031 1032 mutex_init(&dev_priv->swaps_lock, "swap", MUTEX_DRIVER, NULL); 1033 mutex_init(&dev_priv->user_irq_lock, "userirq", MUTEX_DRIVER, NULL); 1034 1035 ret = drm_vblank_init(dev, I915_NUM_PIPE); 1036 if (ret) { 1037 (void) i915_driver_unload(dev); 1038 return ret; 1039 } 1040 1041 return ret; 1042 } 1043 1044 int i915_driver_unload(struct drm_device *dev) 1045 { 1046 drm_i915_private_t *dev_priv = dev->dev_private; 1047 1048 i915_free_hardware_status(dev); 1049 1050 DRM_FINI_WAITQUEUE(&dev_priv->irq_queue); 1051 mutex_destroy(&dev_priv->swaps_lock); 1052 mutex_destroy(&dev_priv->user_irq_lock); 1053 1054 drm_free(dev->dev_private, sizeof(drm_i915_private_t), 1055 DRM_MEM_DRIVER); 1056 dev->dev_private = NULL; 1057 1058 return 0; 1059 } 1060 1061 1062 void i915_driver_lastclose(drm_device_t * dev) 1063 { 1064 drm_i915_private_t *dev_priv = dev->dev_private; 1065 1066 /* agp off can use this to get called before dev_priv */ 1067 if (!dev_priv) 1068 return; 1069 1070 #ifdef I915_HAVE_BUFFER 1071 if (dev_priv->val_bufs) { 1072 vfree(dev_priv->val_bufs); 1073 dev_priv->val_bufs = NULL; 1074 } 1075 #endif 1076 1077 1078 DRM_GETSAREA(); 1079 if (dev_priv->sarea_priv) 1080 i915_do_cleanup_pageflip(dev); 1081 if (dev_priv->agp_heap) 1082 i915_mem_takedown(&(dev_priv->agp_heap)); 1083 #if defined(I915_HAVE_BUFFER) 1084 if (dev_priv->sarea_kmap.virtual) { 1085 drm_bo_kunmap(&dev_priv->sarea_kmap); 1086 dev_priv->sarea_kmap.virtual = NULL; 1087 dev->lock.hw_lock = NULL; 1088 dev->sigdata.lock = NULL; 1089 } 1090 1091 if (dev_priv->sarea_bo) { 1092 mutex_lock(&dev->struct_mutex); 1093 drm_bo_usage_deref_locked(&dev_priv->sarea_bo); 1094 mutex_unlock(&dev->struct_mutex); 1095 dev_priv->sarea_bo = NULL; 1096 } 1097 #endif 1098 (void) i915_dma_cleanup(dev); 1099 } 1100 1101 void i915_driver_preclose(drm_device_t * dev, drm_file_t *fpriv) 1102 { 1103 if (dev->dev_private) { 1104 drm_i915_private_t *dev_priv = dev->dev_private; 1105 i915_mem_release(dev, fpriv, dev_priv->agp_heap); 1106 } 1107 } 1108 1109 drm_ioctl_desc_t i915_ioctls[] = { 1110 [DRM_IOCTL_NR(DRM_I915_INIT)] = 1111 {i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, 1112 [DRM_IOCTL_NR(DRM_I915_FLUSH)] = 1113 {i915_flush_ioctl, DRM_AUTH}, 1114 [DRM_IOCTL_NR(DRM_I915_FLIP)] = 1115 {i915_flip_bufs, DRM_AUTH}, 1116 [DRM_IOCTL_NR(DRM_I915_BATCHBUFFER)] = 1117 {i915_batchbuffer, DRM_AUTH}, 1118 [DRM_IOCTL_NR(DRM_I915_IRQ_EMIT)] = 1119 {i915_irq_emit, DRM_AUTH}, 1120 [DRM_IOCTL_NR(DRM_I915_IRQ_WAIT)] = 1121 {i915_irq_wait, DRM_AUTH}, 1122 [DRM_IOCTL_NR(DRM_I915_GETPARAM)] = 1123 {i915_getparam, DRM_AUTH}, 1124 [DRM_IOCTL_NR(DRM_I915_SETPARAM)] = 1125 {i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, 1126 [DRM_IOCTL_NR(DRM_I915_ALLOC)] = 1127 {i915_mem_alloc, DRM_AUTH}, 1128 [DRM_IOCTL_NR(DRM_I915_FREE)] = 1129 {i915_mem_free, DRM_AUTH}, 1130 [DRM_IOCTL_NR(DRM_I915_INIT_HEAP)] = 1131 {i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, 1132 [DRM_IOCTL_NR(DRM_I915_CMDBUFFER)] = 1133 {i915_cmdbuffer, DRM_AUTH}, 1134 [DRM_IOCTL_NR(DRM_I915_DESTROY_HEAP)] = 1135 {i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, 1136 [DRM_IOCTL_NR(DRM_I915_SET_VBLANK_PIPE)] = 1137 {i915_vblank_pipe_set, DRM_AUTH}, 1138 [DRM_IOCTL_NR(DRM_I915_GET_VBLANK_PIPE)] = 1139 {i915_vblank_pipe_get, DRM_AUTH}, 1140 [DRM_IOCTL_NR(DRM_I915_VBLANK_SWAP)] = 1141 {i915_vblank_swap, DRM_AUTH}, 1142 [DRM_IOCTL_NR(DRM_I915_HWS_ADDR)] = 1143 {i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, 1144 }; 1145 1146 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls); 1147 1148 /** 1149 * Determine if the device really is AGP or not. 1150 * 1151 * All Intel graphics chipsets are treated as AGP, even if they are really 1152 * PCI-e. 1153 * 1154 * \param dev The device to be tested. 1155 * 1156 * \returns 1157 * A value of 1 is always retured to indictate every i9x5 is AGP. 1158 */ 1159 /*ARGSUSED*/ 1160 int i915_driver_device_is_agp(drm_device_t * dev) 1161 { 1162 return 1; 1163 } 1164 1165 /*ARGSUSED*/ 1166 int i915_driver_firstopen(struct drm_device *dev) 1167 { 1168 #ifdef I915_HAVE_BUFFER 1169 drm_bo_driver_init(dev); 1170 #endif 1171 return 0; 1172 } 1173 1174