drivers/gpu/drm/i915/i915_dma.c

   1 /* i915_dma.c -- DMA support for the I915 -*- linux-c -*-
   2  */
   3 /*
   4  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  */
  28
  29 #include "drmP.h"
  30 #include "drm.h"
  31 #include "drm_crtc_helper.h"
  32 #include "drm_fb_helper.h"
  33 #include "intel_drv.h"
  34 #include "i915_drm.h"
  35 #include "i915_drv.h"
  36 #include "i915_trace.h"
  37 #include <linux/pci.h>
  38 #include <linux/vgaarb.h>
  39 #include <linux/acpi.h>
  40 #include <linux/pnp.h>
  41 #include <linux/vga_switcheroo.h>
  42 #include <linux/slab.h>
  43
  44 /**
  45  * Sets up the hardware status page for devices that need a physical address
  46  * in the register.
  47  */
  48 static int i915_init_phys_hws(struct drm_device *dev)
  49 {
  50         drm_i915_private_t *dev_priv = dev->dev_private;
  51         /* Program Hardware Status Page */
  52         dev_priv->status_page_dmah =
  53                 drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE);
  54
  55         if (!dev_priv->status_page_dmah) {
  56                 DRM_ERROR("Can not allocate hardware status page\n");
  57                 return -ENOMEM;
  58         }
  59         dev_priv->render_ring.status_page.page_addr
  60                 = dev_priv->status_page_dmah->vaddr;
  61         dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
  62
  63         memset(dev_priv->render_ring.status_page.page_addr, 0, PAGE_SIZE);
  64
  65         if (IS_I965G(dev))
  66                 dev_priv->dma_status_page |= (dev_priv->dma_status_page >> 28) &
  67                                              0xf0;
  68
  69         I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
  70         DRM_DEBUG_DRIVER("Enabled hardware status page\n");
  71         return 0;
  72 }
  73
  74 /**
  75  * Frees the hardware status page, whether it's a physical address or a virtual
  76  * address set up by the X Server.
  77  */
  78 static void i915_free_hws(struct drm_device *dev)
  79 {
  80         drm_i915_private_t *dev_priv = dev->dev_private;
  81         if (dev_priv->status_page_dmah) {
  82                 drm_pci_free(dev, dev_priv->status_page_dmah);
  83                 dev_priv->status_page_dmah = NULL;
  84         }
  85
  86         if (dev_priv->render_ring.status_page.gfx_addr) {
  87                 dev_priv->render_ring.status_page.gfx_addr = 0;
  88                 drm_core_ioremapfree(&dev_priv->hws_map, dev);
  89         }
  90
  91         /* Need to rewrite hardware status page */
  92         I915_WRITE(HWS_PGA, 0x1ffff000);
  93 }
  94
  95 void i915_kernel_lost_context(struct drm_device * dev)
  96 {
  97         drm_i915_private_t *dev_priv = dev->dev_private;
  98         struct drm_i915_master_private *master_priv;
  99         struct intel_ring_buffer *ring = &dev_priv->render_ring;
 100
 101         /*
 102          * We should never lose context on the ring with modesetting
 103          * as we don't expose it to userspace
 104          */
 105         if (drm_core_check_feature(dev, DRIVER_MODESET))
 106                 return;
 107
 108         ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 109         ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 110         ring->space = ring->head - (ring->tail + 8);
 111         if (ring->space < 0)
 112                 ring->space += ring->size;
 113
 114         if (!dev->primary->master)
 115                 return;
 116
 117         master_priv = dev->primary->master->driver_priv;
 118         if (ring->head == ring->tail && master_priv->sarea_priv)
 119                 master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
 120 }
 121
 122 static int i915_dma_cleanup(struct drm_device * dev)
 123 {
 124         drm_i915_private_t *dev_priv = dev->dev_private;
 125         /* Make sure interrupts are disabled here because the uninstall ioctl
 126          * may not have been called from userspace and after dev_private
 127          * is freed, it's too late.
 128          */
 129         if (dev->irq_enabled)
 130                 drm_irq_uninstall(dev);
 131
 132         mutex_lock(&dev->struct_mutex);
 133         intel_cleanup_ring_buffer(dev, &dev_priv->render_ring);
 134         if (HAS_BSD(dev))
 135                 intel_cleanup_ring_buffer(dev, &dev_priv->bsd_ring);
 136         mutex_unlock(&dev->struct_mutex);
 137
 138         /* Clear the HWS virtual address at teardown */
 139         if (I915_NEED_GFX_HWS(dev))
 140                 i915_free_hws(dev);
 141
 142         return 0;
 143 }
 144
 145 static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
 146 {
 147         drm_i915_private_t *dev_priv = dev->dev_private;
 148         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 149
 150         master_priv->sarea = drm_getsarea(dev);
 151         if (master_priv->sarea) {
 152                 master_priv->sarea_priv = (drm_i915_sarea_t *)
 153                         ((u8 *)master_priv->sarea->handle + init->sarea_priv_offset);
 154         } else {
 155                 DRM_DEBUG_DRIVER("sarea not found assuming DRI2 userspace\n");
 156         }
 157
 158         if (init->ring_size != 0) {
 159                 if (dev_priv->render_ring.gem_object != NULL) {
 160                         i915_dma_cleanup(dev);
 161                         DRM_ERROR("Client tried to initialize ringbuffer in "
 162                                   "GEM mode\n");
 163                         return -EINVAL;
 164                 }
 165
 166                 dev_priv->render_ring.size = init->ring_size;
 167
 168                 dev_priv->render_ring.map.offset = init->ring_start;
 169                 dev_priv->render_ring.map.size = init->ring_size;
 170                 dev_priv->render_ring.map.type = 0;
 171                 dev_priv->render_ring.map.flags = 0;
 172                 dev_priv->render_ring.map.mtrr = 0;
 173
 174                 drm_core_ioremap_wc(&dev_priv->render_ring.map, dev);
 175
 176                 if (dev_priv->render_ring.map.handle == NULL) {
 177                         i915_dma_cleanup(dev);
 178                         DRM_ERROR("can not ioremap virtual address for"
 179                                   " ring buffer\n");
 180                         return -ENOMEM;
 181                 }
 182         }
 183
 184         dev_priv->render_ring.virtual_start = dev_priv->render_ring.map.handle;
 185
 186         dev_priv->cpp = init->cpp;
 187         dev_priv->back_offset = init->back_offset;
 188         dev_priv->front_offset = init->front_offset;
 189         dev_priv->current_page = 0;
 190         if (master_priv->sarea_priv)
 191                 master_priv->sarea_priv->pf_current_page = 0;
 192
 193         /* Allow hardware batchbuffers unless told otherwise.
 194          */
 195         dev_priv->allow_batchbuffer = 1;
 196
 197         return 0;
 198 }
 199
 200 static int i915_dma_resume(struct drm_device * dev)
 201 {
 202         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 203
 204         struct intel_ring_buffer *ring;
 205         DRM_DEBUG_DRIVER("%s\n", __func__);
 206
 207         ring = &dev_priv->render_ring;
 208
 209         if (ring->map.handle == NULL) {
 210                 DRM_ERROR("can not ioremap virtual address for"
 211                           " ring buffer\n");
 212                 return -ENOMEM;
 213         }
 214
 215         /* Program Hardware Status Page */
 216         if (!ring->status_page.page_addr) {
 217                 DRM_ERROR("Can not find hardware status page\n");
 218                 return -EINVAL;
 219         }
 220         DRM_DEBUG_DRIVER("hw status page @ %p\n",
 221                                 ring->status_page.page_addr);
 222         if (ring->status_page.gfx_addr != 0)
 223                 ring->setup_status_page(dev, ring);
 224         else
 225                 I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
 226
 227         DRM_DEBUG_DRIVER("Enabled hardware status page\n");
 228
 229         return 0;
 230 }
 231
 232 static int i915_dma_init(struct drm_device *dev, void *data,
 233                          struct drm_file *file_priv)
 234 {
 235         drm_i915_init_t *init = data;
 236         int retcode = 0;
 237
 238         switch (init->func) {
 239         case I915_INIT_DMA:
 240                 retcode = i915_initialize(dev, init);
 241                 break;
 242         case I915_CLEANUP_DMA:
 243                 retcode = i915_dma_cleanup(dev);
 244                 break;
 245         case I915_RESUME_DMA:
 246                 retcode = i915_dma_resume(dev);
 247                 break;
 248         default:
 249                 retcode = -EINVAL;
 250                 break;
 251         }
 252
 253         return retcode;
 254 }
 255
 256 /* Implement basically the same security restrictions as hardware does
 257  * for MI_BATCH_NON_SECURE.  These can be made stricter at any time.
 258  *
 259  * Most of the calculations below involve calculating the size of a
 260  * particular instruction.  It's important to get the size right as
 261  * that tells us where the next instruction to check is.  Any illegal
 262  * instruction detected will be given a size of zero, which is a
 263  * signal to abort the rest of the buffer.
 264  */
 265 static int do_validate_cmd(int cmd)
 266 {
 267         switch (((cmd >> 29) & 0x7)) {
 268         case 0x0:
 269                 switch ((cmd >> 23) & 0x3f) {
 270                 case 0x0:
 271                         return 1;       /* MI_NOOP */
 272                 case 0x4:
 273                         return 1;       /* MI_FLUSH */
 274                 default:
 275                         return 0;       /* disallow everything else */
 276                 }
 277                 break;
 278         case 0x1:
 279                 return 0;       /* reserved */
 280         case 0x2:
 281                 return (cmd & 0xff) + 2;        /* 2d commands */
 282         case 0x3:
 283                 if (((cmd >> 24) & 0x1f) <= 0x18)
 284                         return 1;
 285
 286                 switch ((cmd >> 24) & 0x1f) {
 287                 case 0x1c:
 288                         return 1;
 289                 case 0x1d:
 290                         switch ((cmd >> 16) & 0xff) {
 291                         case 0x3:
 292                                 return (cmd & 0x1f) + 2;
 293                         case 0x4:
 294                                 return (cmd & 0xf) + 2;
 295                         default:
 296                                 return (cmd & 0xffff) + 2;
 297                         }
 298                 case 0x1e:
 299                         if (cmd & (1 << 23))
 300                                 return (cmd & 0xffff) + 1;
 301                         else
 302                                 return 1;
 303                 case 0x1f:
 304                         if ((cmd & (1 << 23)) == 0)     /* inline vertices */
 305                                 return (cmd & 0x1ffff) + 2;
 306                         else if (cmd & (1 << 17))       /* indirect random */
 307                                 if ((cmd & 0xffff) == 0)
 308                                         return 0;       /* unknown length, too hard */
 309                                 else
 310                                         return (((cmd & 0xffff) + 1) / 2) + 1;
 311                         else
 312                                 return 2;       /* indirect sequential */
 313                 default:
 314                         return 0;
 315                 }
 316         default:
 317                 return 0;
 318         }
 319
 320         return 0;
 321 }
 322
 323 static int validate_cmd(int cmd)
 324 {
 325         int ret = do_validate_cmd(cmd);
 326
 327 /*      printk("validate_cmd( %x ): %d\n", cmd, ret); */
 328
 329         return ret;
 330 }
 331
 332 static int i915_emit_cmds(struct drm_device * dev, int *buffer, int dwords)
 333 {
 334         drm_i915_private_t *dev_priv = dev->dev_private;
 335         int i;
 336
 337         if ((dwords+1) * sizeof(int) >= dev_priv->render_ring.size - 8)
 338                 return -EINVAL;
 339
 340         BEGIN_LP_RING((dwords+1)&~1);
 341
 342         for (i = 0; i < dwords;) {
 343                 int cmd, sz;
 344
 345                 cmd = buffer[i];
 346
 347                 if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords)
 348                         return -EINVAL;
 349
 350                 OUT_RING(cmd);
 351
 352                 while (++i, --sz) {
 353                         OUT_RING(buffer[i]);
 354                 }
 355         }
 356
 357         if (dwords & 1)
 358                 OUT_RING(0);
 359
 360         ADVANCE_LP_RING();
 361
 362         return 0;
 363 }
 364
 365 int
 366 i915_emit_box(struct drm_device *dev,
 367               struct drm_clip_rect *boxes,
 368               int i, int DR1, int DR4)
 369 {
 370         struct drm_clip_rect box = boxes[i];
 371
 372         if (box.y2 <= box.y1 || box.x2 <= box.x1 || box.y2 <= 0 || box.x2 <= 0) {
 373                 DRM_ERROR("Bad box %d,%d..%d,%d\n",
 374                           box.x1, box.y1, box.x2, box.y2);
 375                 return -EINVAL;
 376         }
 377
 378         if (IS_I965G(dev)) {
 379                 BEGIN_LP_RING(4);
 380                 OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
 381                 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
 382                 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
 383                 OUT_RING(DR4);
 384                 ADVANCE_LP_RING();
 385         } else {
 386                 BEGIN_LP_RING(6);
 387                 OUT_RING(GFX_OP_DRAWRECT_INFO);
 388                 OUT_RING(DR1);
 389                 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
 390                 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
 391                 OUT_RING(DR4);
 392                 OUT_RING(0);
 393                 ADVANCE_LP_RING();
 394         }
 395
 396         return 0;
 397 }
 398
 399 /* XXX: Emitting the counter should really be moved to part of the IRQ
 400  * emit. For now, do it in both places:
 401  */
 402
 403 static void i915_emit_breadcrumb(struct drm_device *dev)
 404 {
 405         drm_i915_private_t *dev_priv = dev->dev_private;
 406         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 407
 408         dev_priv->counter++;
 409         if (dev_priv->counter > 0x7FFFFFFFUL)
 410                 dev_priv->counter = 0;
 411         if (master_priv->sarea_priv)
 412                 master_priv->sarea_priv->last_enqueue = dev_priv->counter;
 413
 414         BEGIN_LP_RING(4);
 415         OUT_RING(MI_STORE_DWORD_INDEX);
 416         OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
 417         OUT_RING(dev_priv->counter);
 418         OUT_RING(0);
 419         ADVANCE_LP_RING();
 420 }
 421
 422 static int i915_dispatch_cmdbuffer(struct drm_device * dev,
 423                                    drm_i915_cmdbuffer_t *cmd,
 424                                    struct drm_clip_rect *cliprects,
 425                                    void *cmdbuf)
 426 {
 427         int nbox = cmd->num_cliprects;
 428         int i = 0, count, ret;
 429
 430         if (cmd->sz & 0x3) {
 431                 DRM_ERROR("alignment");
 432                 return -EINVAL;
 433         }
 434
 435         i915_kernel_lost_context(dev);
 436
 437         count = nbox ? nbox : 1;
 438
 439         for (i = 0; i < count; i++) {
 440                 if (i < nbox) {
 441                         ret = i915_emit_box(dev, cliprects, i,
 442                                             cmd->DR1, cmd->DR4);
 443                         if (ret)
 444                                 return ret;
 445                 }
 446
 447                 ret = i915_emit_cmds(dev, cmdbuf, cmd->sz / 4);
 448                 if (ret)
 449                         return ret;
 450         }
 451
 452         i915_emit_breadcrumb(dev);
 453         return 0;
 454 }
 455
 456 static int i915_dispatch_batchbuffer(struct drm_device * dev,
 457                                      drm_i915_batchbuffer_t * batch,
 458                                      struct drm_clip_rect *cliprects)
 459 {
 460         int nbox = batch->num_cliprects;
 461         int i = 0, count;
 462
 463         if ((batch->start | batch->used) & 0x7) {
 464                 DRM_ERROR("alignment");
 465                 return -EINVAL;
 466         }
 467
 468         i915_kernel_lost_context(dev);
 469
 470         count = nbox ? nbox : 1;
 471
 472         for (i = 0; i < count; i++) {
 473                 if (i < nbox) {
 474                         int ret = i915_emit_box(dev, cliprects, i,
 475                                                 batch->DR1, batch->DR4);
 476                         if (ret)
 477                                 return ret;
 478                 }
 479
 480                 if (!IS_I830(dev) && !IS_845G(dev)) {
 481                         BEGIN_LP_RING(2);
 482                         if (IS_I965G(dev)) {
 483                                 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
 484                                 OUT_RING(batch->start);
 485                         } else {
 486                                 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
 487                                 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
 488                         }
 489                         ADVANCE_LP_RING();
 490                 } else {
 491                         BEGIN_LP_RING(4);
 492                         OUT_RING(MI_BATCH_BUFFER);
 493                         OUT_RING(batch->start | MI_BATCH_NON_SECURE);
 494                         OUT_RING(batch->start + batch->used - 4);
 495                         OUT_RING(0);
 496                         ADVANCE_LP_RING();
 497                 }
 498         }
 499
 500         i915_emit_breadcrumb(dev);
 501
 502         return 0;
 503 }
 504
 505 static int i915_dispatch_flip(struct drm_device * dev)
 506 {
 507         drm_i915_private_t *dev_priv = dev->dev_private;
 508         struct drm_i915_master_private *master_priv =
 509                 dev->primary->master->driver_priv;
 510
 511         if (!master_priv->sarea_priv)
 512                 return -EINVAL;
 513
 514         DRM_DEBUG_DRIVER("%s: page=%d pfCurrentPage=%d\n",
 515                           __func__,
 516                          dev_priv->current_page,
 517                          master_priv->sarea_priv->pf_current_page);
 518
 519         i915_kernel_lost_context(dev);
 520
 521         BEGIN_LP_RING(2);
 522         OUT_RING(MI_FLUSH | MI_READ_FLUSH);
 523         OUT_RING(0);
 524         ADVANCE_LP_RING();
 525
 526         BEGIN_LP_RING(6);
 527         OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
 528         OUT_RING(0);
 529         if (dev_priv->current_page == 0) {
 530                 OUT_RING(dev_priv->back_offset);
 531                 dev_priv->current_page = 1;
 532         } else {
 533                 OUT_RING(dev_priv->front_offset);
 534                 dev_priv->current_page = 0;
 535         }
 536         OUT_RING(0);
 537         ADVANCE_LP_RING();
 538
 539         BEGIN_LP_RING(2);
 540         OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
 541         OUT_RING(0);
 542         ADVANCE_LP_RING();
 543
 544         master_priv->sarea_priv->last_enqueue = dev_priv->counter++;
 545
 546         BEGIN_LP_RING(4);
 547         OUT_RING(MI_STORE_DWORD_INDEX);
 548         OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
 549         OUT_RING(dev_priv->counter);
 550         OUT_RING(0);
 551         ADVANCE_LP_RING();
 552
 553         master_priv->sarea_priv->pf_current_page = dev_priv->current_page;
 554         return 0;
 555 }
 556
 557 static int i915_quiescent(struct drm_device * dev)
 558 {
 559         drm_i915_private_t *dev_priv = dev->dev_private;
 560
 561         i915_kernel_lost_context(dev);
 562         return intel_wait_ring_buffer(dev, &dev_priv->render_ring,
 563                                       dev_priv->render_ring.size - 8);
 564 }
 565
 566 static int i915_flush_ioctl(struct drm_device *dev, void *data,
 567                             struct drm_file *file_priv)
 568 {
 569         int ret;
 570
 571         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 572
 573         mutex_lock(&dev->struct_mutex);
 574         ret = i915_quiescent(dev);
 575         mutex_unlock(&dev->struct_mutex);
 576
 577         return ret;
 578 }
 579
 580 static int i915_batchbuffer(struct drm_device *dev, void *data,
 581                             struct drm_file *file_priv)
 582 {
 583         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 584         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 585         drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
 586             master_priv->sarea_priv;
 587         drm_i915_batchbuffer_t *batch = data;
 588         int ret;
 589         struct drm_clip_rect *cliprects = NULL;
 590
 591         if (!dev_priv->allow_batchbuffer) {
 592                 DRM_ERROR("Batchbuffer ioctl disabled\n");
 593                 return -EINVAL;
 594         }
 595
 596         DRM_DEBUG_DRIVER("i915 batchbuffer, start %x used %d cliprects %d\n",
 597                         batch->start, batch->used, batch->num_cliprects);
 598
 599         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 600
 601         if (batch->num_cliprects < 0)
 602                 return -EINVAL;
 603
 604         if (batch->num_cliprects) {
 605                 cliprects = kcalloc(batch->num_cliprects,
 606                                     sizeof(struct drm_clip_rect),
 607                                     GFP_KERNEL);
 608                 if (cliprects == NULL)
 609                         return -ENOMEM;
 610
 611                 ret = copy_from_user(cliprects, batch->cliprects,
 612                                      batch->num_cliprects *
 613                                      sizeof(struct drm_clip_rect));
 614                 if (ret != 0)
 615                         goto fail_free;
 616         }
 617
 618         mutex_lock(&dev->struct_mutex);
 619         ret = i915_dispatch_batchbuffer(dev, batch, cliprects);
 620         mutex_unlock(&dev->struct_mutex);
 621
 622         if (sarea_priv)
 623                 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
 624
 625 fail_free:
 626         kfree(cliprects);
 627
 628         return ret;
 629 }
 630
 631 static int i915_cmdbuffer(struct drm_device *dev, void *data,
 632                           struct drm_file *file_priv)
 633 {
 634         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 635         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 636         drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
 637             master_priv->sarea_priv;
 638         drm_i915_cmdbuffer_t *cmdbuf = data;
 639         struct drm_clip_rect *cliprects = NULL;
 640         void *batch_data;
 641         int ret;
 642
 643         DRM_DEBUG_DRIVER("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
 644                         cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
 645
 646         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 647
 648         if (cmdbuf->num_cliprects < 0)
 649                 return -EINVAL;
 650
 651         batch_data = kmalloc(cmdbuf->sz, GFP_KERNEL);
 652         if (batch_data == NULL)
 653                 return -ENOMEM;
 654
 655         ret = copy_from_user(batch_data, cmdbuf->buf, cmdbuf->sz);
 656         if (ret != 0)
 657                 goto fail_batch_free;
 658
 659         if (cmdbuf->num_cliprects) {
 660                 cliprects = kcalloc(cmdbuf->num_cliprects,
 661                                     sizeof(struct drm_clip_rect), GFP_KERNEL);
 662                 if (cliprects == NULL) {
 663                         ret = -ENOMEM;
 664                         goto fail_batch_free;
 665                 }
 666
 667                 ret = copy_from_user(cliprects, cmdbuf->cliprects,
 668                                      cmdbuf->num_cliprects *
 669                                      sizeof(struct drm_clip_rect));
 670                 if (ret != 0)
 671                         goto fail_clip_free;
 672         }
 673
 674         mutex_lock(&dev->struct_mutex);
 675         ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data);
 676         mutex_unlock(&dev->struct_mutex);
 677         if (ret) {
 678                 DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
 679                 goto fail_clip_free;
 680         }
 681
 682         if (sarea_priv)
 683                 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
 684
 685 fail_clip_free:
 686         kfree(cliprects);
 687 fail_batch_free:
 688         kfree(batch_data);
 689
 690         return ret;
 691 }
 692
 693 static int i915_flip_bufs(struct drm_device *dev, void *data,
 694                           struct drm_file *file_priv)
 695 {
 696         int ret;
 697
 698         DRM_DEBUG_DRIVER("%s\n", __func__);
 699
 700         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 701
 702         mutex_lock(&dev->struct_mutex);
 703         ret = i915_dispatch_flip(dev);
 704         mutex_unlock(&dev->struct_mutex);
 705
 706         return ret;
 707 }
 708
 709 static int i915_getparam(struct drm_device *dev, void *data,
 710                          struct drm_file *file_priv)
 711 {
 712         drm_i915_private_t *dev_priv = dev->dev_private;
 713         drm_i915_getparam_t *param = data;
 714         int value;
 715
 716         if (!dev_priv) {
 717                 DRM_ERROR("called with no initialization\n");
 718                 return -EINVAL;
 719         }
 720
 721         switch (param->param) {
 722         case I915_PARAM_IRQ_ACTIVE:
 723                 value = dev->pdev->irq ? 1 : 0;
 724                 break;
 725         case I915_PARAM_ALLOW_BATCHBUFFER:
 726                 value = dev_priv->allow_batchbuffer ? 1 : 0;
 727                 break;
 728         case I915_PARAM_LAST_DISPATCH:
 729                 value = READ_BREADCRUMB(dev_priv);
 730                 break;
 731         case I915_PARAM_CHIPSET_ID:
 732                 value = dev->pci_device;
 733                 break;
 734         case I915_PARAM_HAS_GEM:
 735                 value = dev_priv->has_gem;
 736                 break;
 737         case I915_PARAM_NUM_FENCES_AVAIL:
 738                 value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
 739                 break;
 740         case I915_PARAM_HAS_OVERLAY:
 741                 value = dev_priv->overlay ? 1 : 0;
 742                 break;
 743         case I915_PARAM_HAS_PAGEFLIPPING:
 744                 value = 1;
 745                 break;
 746         case I915_PARAM_HAS_EXECBUF2:
 747                 /* depends on GEM */
 748                 value = dev_priv->has_gem;
 749                 break;
 750         case I915_PARAM_HAS_BSD:
 751                 value = HAS_BSD(dev);
 752                 break;
 753         default:
 754                 DRM_DEBUG_DRIVER("Unknown parameter %d\n",
 755                                  param->param);
 756                 return -EINVAL;
 757         }
 758
 759         if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
 760                 DRM_ERROR("DRM_COPY_TO_USER failed\n");
 761                 return -EFAULT;
 762         }
 763
 764         return 0;
 765 }
 766
 767 static int i915_setparam(struct drm_device *dev, void *data,
 768                          struct drm_file *file_priv)
 769 {
 770         drm_i915_private_t *dev_priv = dev->dev_private;
 771         drm_i915_setparam_t *param = data;
 772
 773         if (!dev_priv) {
 774                 DRM_ERROR("called with no initialization\n");
 775                 return -EINVAL;
 776         }
 777
 778         switch (param->param) {
 779         case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
 780                 break;
 781         case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
 782                 dev_priv->tex_lru_log_granularity = param->value;
 783                 break;
 784         case I915_SETPARAM_ALLOW_BATCHBUFFER:
 785                 dev_priv->allow_batchbuffer = param->value;
 786                 break;
 787         case I915_SETPARAM_NUM_USED_FENCES:
 788                 if (param->value > dev_priv->num_fence_regs ||
 789                     param->value < 0)
 790                         return -EINVAL;
 791                 /* Userspace can use first N regs */
 792                 dev_priv->fence_reg_start = param->value;
 793                 break;
 794         default:
 795                 DRM_DEBUG_DRIVER("unknown parameter %d\n",
 796                                         param->param);
 797                 return -EINVAL;
 798         }
 799
 800         return 0;
 801 }
 802
 803 static int i915_set_status_page(struct drm_device *dev, void *data,
 804                                 struct drm_file *file_priv)
 805 {
 806         drm_i915_private_t *dev_priv = dev->dev_private;
 807         drm_i915_hws_addr_t *hws = data;
 808         struct intel_ring_buffer *ring = &dev_priv->render_ring;
 809
 810         if (!I915_NEED_GFX_HWS(dev))
 811                 return -EINVAL;
 812
 813         if (!dev_priv) {
 814                 DRM_ERROR("called with no initialization\n");
 815                 return -EINVAL;
 816         }
 817
 818         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 819                 WARN(1, "tried to set status page when mode setting active\n");
 820                 return 0;
 821         }
 822
 823         DRM_DEBUG_DRIVER("set status page addr 0x%08x\n", (u32)hws->addr);
 824
 825         ring->status_page.gfx_addr = hws->addr & (0x1ffff<<12);
 826
 827         dev_priv->hws_map.offset = dev->agp->base + hws->addr;
 828         dev_priv->hws_map.size = 4*1024;
 829         dev_priv->hws_map.type = 0;
 830         dev_priv->hws_map.flags = 0;
 831         dev_priv->hws_map.mtrr = 0;
 832
 833         drm_core_ioremap_wc(&dev_priv->hws_map, dev);
 834         if (dev_priv->hws_map.handle == NULL) {
 835                 i915_dma_cleanup(dev);
 836                 ring->status_page.gfx_addr = 0;
 837                 DRM_ERROR("can not ioremap virtual address for"
 838                                 " G33 hw status page\n");
 839                 return -ENOMEM;
 840         }
 841         ring->status_page.page_addr = dev_priv->hws_map.handle;
 842         memset(ring->status_page.page_addr, 0, PAGE_SIZE);
 843         I915_WRITE(HWS_PGA, ring->status_page.gfx_addr);
 844
 845         DRM_DEBUG_DRIVER("load hws HWS_PGA with gfx mem 0x%x\n",
 846                          ring->status_page.gfx_addr);
 847         DRM_DEBUG_DRIVER("load hws at %p\n",
 848                          ring->status_page.page_addr);
 849         return 0;
 850 }
 851
 852 static int i915_get_bridge_dev(struct drm_device *dev)
 853 {
 854         struct drm_i915_private *dev_priv = dev->dev_private;
 855
 856         dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0));
 857         if (!dev_priv->bridge_dev) {
 858                 DRM_ERROR("bridge device not found\n");
 859                 return -1;
 860         }
 861         return 0;
 862 }
 863
 864 #define MCHBAR_I915 0x44
 865 #define MCHBAR_I965 0x48
 866 #define MCHBAR_SIZE (4*4096)
 867
 868 #define DEVEN_REG 0x54
 869 #define   DEVEN_MCHBAR_EN (1 << 28)
 870
 871 /* Allocate space for the MCH regs if needed, return nonzero on error */
 872 static int
 873 intel_alloc_mchbar_resource(struct drm_device *dev)
 874 {
 875         drm_i915_private_t *dev_priv = dev->dev_private;
 876         int reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
 877         u32 temp_lo, temp_hi = 0;
 878         u64 mchbar_addr;
 879         int ret = 0;
 880
 881         if (IS_I965G(dev))
 882                 pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
 883         pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
 884         mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
 885
 886         /* If ACPI doesn't have it, assume we need to allocate it ourselves */
 887 #ifdef CONFIG_PNP
 888         if (mchbar_addr &&
 889             pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE)) {
 890                 ret = 0;
 891                 goto out;
 892         }
 893 #endif
 894
 895         /* Get some space for it */
 896         ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus, &dev_priv->mch_res,
 897                                      MCHBAR_SIZE, MCHBAR_SIZE,
 898                                      PCIBIOS_MIN_MEM,
 899                                      0,   pcibios_align_resource,
 900                                      dev_priv->bridge_dev);
 901         if (ret) {
 902                 DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret);
 903                 dev_priv->mch_res.start = 0;
 904                 goto out;
 905         }
 906
 907         if (IS_I965G(dev))
 908                 pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
 909                                        upper_32_bits(dev_priv->mch_res.start));
 910
 911         pci_write_config_dword(dev_priv->bridge_dev, reg,
 912                                lower_32_bits(dev_priv->mch_res.start));
 913 out:
 914         return ret;
 915 }
 916
 917 /* Setup MCHBAR if possible, return true if we should disable it again */
 918 static void
 919 intel_setup_mchbar(struct drm_device *dev)
 920 {
 921         drm_i915_private_t *dev_priv = dev->dev_private;
 922         int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
 923         u32 temp;
 924         bool enabled;
 925
 926         dev_priv->mchbar_need_disable = false;
 927
 928         if (IS_I915G(dev) || IS_I915GM(dev)) {
 929                 pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
 930                 enabled = !!(temp & DEVEN_MCHBAR_EN);
 931         } else {
 932                 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
 933                 enabled = temp & 1;
 934         }
 935
 936         /* If it's already enabled, don't have to do anything */
 937         if (enabled)
 938                 return;
 939
 940         if (intel_alloc_mchbar_resource(dev))
 941                 return;
 942
 943         dev_priv->mchbar_need_disable = true;
 944
 945         /* Space is allocated or reserved, so enable it. */
 946         if (IS_I915G(dev) || IS_I915GM(dev)) {
 947                 pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG,
 948                                        temp | DEVEN_MCHBAR_EN);
 949         } else {
 950                 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
 951                 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
 952         }
 953 }
 954
 955 static void
 956 intel_teardown_mchbar(struct drm_device *dev)
 957 {
 958         drm_i915_private_t *dev_priv = dev->dev_private;
 959         int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
 960         u32 temp;
 961
 962         if (dev_priv->mchbar_need_disable) {
 963                 if (IS_I915G(dev) || IS_I915GM(dev)) {
 964                         pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
 965                         temp &= ~DEVEN_MCHBAR_EN;
 966                         pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp);
 967                 } else {
 968                         pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
 969                         temp &= ~1;
 970                         pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp);
 971                 }
 972         }
 973
 974         if (dev_priv->mch_res.start)
 975                 release_resource(&dev_priv->mch_res);
 976 }
 977
 978 /**
 979  * i915_probe_agp - get AGP bootup configuration
 980  * @pdev: PCI device
 981  * @aperture_size: returns AGP aperture configured size
 982  * @preallocated_size: returns size of BIOS preallocated AGP space
 983  *
 984  * Since Intel integrated graphics are UMA, the BIOS has to set aside
 985  * some RAM for the framebuffer at early boot.  This code figures out
 986  * how much was set aside so we can use it for our own purposes.
 987  */
 988 static int i915_probe_agp(struct drm_device *dev, uint32_t *aperture_size,
 989                           uint32_t *preallocated_size,
 990                           uint32_t *start)
 991 {
 992         struct drm_i915_private *dev_priv = dev->dev_private;
 993         u16 tmp = 0;
 994         unsigned long overhead;
 995         unsigned long stolen;
 996
 997         /* Get the fb aperture size and "stolen" memory amount. */
 998         pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &tmp);
 999
1000         *aperture_size = 1024 * 1024;
1001         *preallocated_size = 1024 * 1024;
1002
1003         switch (dev->pdev->device) {
1004         case PCI_DEVICE_ID_INTEL_82830_CGC:
1005         case PCI_DEVICE_ID_INTEL_82845G_IG:
1006         case PCI_DEVICE_ID_INTEL_82855GM_IG:
1007         case PCI_DEVICE_ID_INTEL_82865_IG:
1008                 if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M)
1009                         *aperture_size *= 64;
1010                 else
1011                         *aperture_size *= 128;
1012                 break;
1013         default:
1014                 /* 9xx supports large sizes, just look at the length */
1015                 *aperture_size = pci_resource_len(dev->pdev, 2);
1016                 break;
1017         }
1018
1019         /*
1020          * Some of the preallocated space is taken by the GTT
1021          * and popup.  GTT is 1K per MB of aperture size, and popup is 4K.
1022          */
1023         if (IS_G4X(dev) || IS_PINEVIEW(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev))
1024                 overhead = 4096;
1025         else
1026                 overhead = (*aperture_size / 1024) + 4096;
1027
1028         if (IS_GEN6(dev)) {
1029                 /* SNB has memory control reg at 0x50.w */
1030                 pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &tmp);
1031
1032                 switch (tmp & SNB_GMCH_GMS_STOLEN_MASK) {
1033                 case INTEL_855_GMCH_GMS_DISABLED:
1034                         DRM_ERROR("video memory is disabled\n");
1035                         return -1;
1036                 case SNB_GMCH_GMS_STOLEN_32M:
1037                         stolen = 32 * 1024 * 1024;
1038                         break;
1039                 case SNB_GMCH_GMS_STOLEN_64M:
1040                         stolen = 64 * 1024 * 1024;
1041                         break;
1042                 case SNB_GMCH_GMS_STOLEN_96M:
1043                         stolen = 96 * 1024 * 1024;
1044                         break;
1045                 case SNB_GMCH_GMS_STOLEN_128M:
1046                         stolen = 128 * 1024 * 1024;
1047                         break;
1048                 case SNB_GMCH_GMS_STOLEN_160M:
1049                         stolen = 160 * 1024 * 1024;
1050                         break;
1051                 case SNB_GMCH_GMS_STOLEN_192M:
1052                         stolen = 192 * 1024 * 1024;
1053                         break;
1054                 case SNB_GMCH_GMS_STOLEN_224M:
1055                         stolen = 224 * 1024 * 1024;
1056                         break;
1057                 case SNB_GMCH_GMS_STOLEN_256M:
1058                         stolen = 256 * 1024 * 1024;
1059                         break;
1060                 case SNB_GMCH_GMS_STOLEN_288M:
1061                         stolen = 288 * 1024 * 1024;
1062                         break;
1063                 case SNB_GMCH_GMS_STOLEN_320M:
1064                         stolen = 320 * 1024 * 1024;
1065                         break;
1066                 case SNB_GMCH_GMS_STOLEN_352M:
1067                         stolen = 352 * 1024 * 1024;
1068                         break;
1069                 case SNB_GMCH_GMS_STOLEN_384M:
1070                         stolen = 384 * 1024 * 1024;
1071                         break;
1072                 case SNB_GMCH_GMS_STOLEN_416M:
1073                         stolen = 416 * 1024 * 1024;
1074                         break;
1075                 case SNB_GMCH_GMS_STOLEN_448M:
1076                         stolen = 448 * 1024 * 1024;
1077                         break;
1078                 case SNB_GMCH_GMS_STOLEN_480M:
1079                         stolen = 480 * 1024 * 1024;
1080                         break;
1081                 case SNB_GMCH_GMS_STOLEN_512M:
1082                         stolen = 512 * 1024 * 1024;
1083                         break;
1084                 default:
1085                         DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
1086                                   tmp & SNB_GMCH_GMS_STOLEN_MASK);
1087                         return -1;
1088                 }
1089         } else {
1090                 switch (tmp & INTEL_GMCH_GMS_MASK) {
1091                 case INTEL_855_GMCH_GMS_DISABLED:
1092                         DRM_ERROR("video memory is disabled\n");
1093                         return -1;
1094                 case INTEL_855_GMCH_GMS_STOLEN_1M:
1095                         stolen = 1 * 1024 * 1024;
1096                         break;
1097                 case INTEL_855_GMCH_GMS_STOLEN_4M:
1098                         stolen = 4 * 1024 * 1024;
1099                         break;
1100                 case INTEL_855_GMCH_GMS_STOLEN_8M:
1101                         stolen = 8 * 1024 * 1024;
1102                         break;
1103                 case INTEL_855_GMCH_GMS_STOLEN_16M:
1104                         stolen = 16 * 1024 * 1024;
1105                         break;
1106                 case INTEL_855_GMCH_GMS_STOLEN_32M:
1107                         stolen = 32 * 1024 * 1024;
1108                         break;
1109                 case INTEL_915G_GMCH_GMS_STOLEN_48M:
1110                         stolen = 48 * 1024 * 1024;
1111                         break;
1112                 case INTEL_915G_GMCH_GMS_STOLEN_64M:
1113                         stolen = 64 * 1024 * 1024;
1114                         break;
1115                 case INTEL_GMCH_GMS_STOLEN_128M:
1116                         stolen = 128 * 1024 * 1024;
1117                         break;
1118                 case INTEL_GMCH_GMS_STOLEN_256M:
1119                         stolen = 256 * 1024 * 1024;
1120                         break;
1121                 case INTEL_GMCH_GMS_STOLEN_96M:
1122                         stolen = 96 * 1024 * 1024;
1123                         break;
1124                 case INTEL_GMCH_GMS_STOLEN_160M:
1125                         stolen = 160 * 1024 * 1024;
1126                         break;
1127                 case INTEL_GMCH_GMS_STOLEN_224M:
1128                         stolen = 224 * 1024 * 1024;
1129                         break;
1130                 case INTEL_GMCH_GMS_STOLEN_352M:
1131                         stolen = 352 * 1024 * 1024;
1132                         break;
1133                 default:
1134                         DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
1135                                   tmp & INTEL_GMCH_GMS_MASK);
1136                         return -1;
1137                 }
1138         }
1139
1140         *preallocated_size = stolen - overhead;
1141         *start = overhead;
1142
1143         return 0;
1144 }
1145
1146 #define PTE_ADDRESS_MASK                0xfffff000
1147 #define PTE_ADDRESS_MASK_HIGH           0x000000f0 /* i915+ */
1148 #define PTE_MAPPING_TYPE_UNCACHED       (0 << 1)
1149 #define PTE_MAPPING_TYPE_DCACHE         (1 << 1) /* i830 only */
1150 #define PTE_MAPPING_TYPE_CACHED         (3 << 1)
1151 #define PTE_MAPPING_TYPE_MASK           (3 << 1)
1152 #define PTE_VALID                       (1 << 0)
1153
1154 /**
1155  * i915_gtt_to_phys - take a GTT address and turn it into a physical one
1156  * @dev: drm device
1157  * @gtt_addr: address to translate
1158  *
1159  * Some chip functions require allocations from stolen space but need the
1160  * physical address of the memory in question.  We use this routine
1161  * to get a physical address suitable for register programming from a given
1162  * GTT address.
1163  */
1164 static unsigned long i915_gtt_to_phys(struct drm_device *dev,
1165                                       unsigned long gtt_addr)
1166 {
1167         unsigned long *gtt;
1168         unsigned long entry, phys;
1169         int gtt_bar = IS_I9XX(dev) ? 0 : 1;
1170         int gtt_offset, gtt_size;
1171
1172         if (IS_I965G(dev)) {
1173                 if (IS_G4X(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev)) {
1174                         gtt_offset = 2*1024*1024;
1175                         gtt_size = 2*1024*1024;
1176                 } else {
1177                         gtt_offset = 512*1024;
1178                         gtt_size = 512*1024;
1179                 }
1180         } else {
1181                 gtt_bar = 3;
1182                 gtt_offset = 0;
1183                 gtt_size = pci_resource_len(dev->pdev, gtt_bar);
1184         }
1185
1186         gtt = ioremap_wc(pci_resource_start(dev->pdev, gtt_bar) + gtt_offset,
1187                          gtt_size);
1188         if (!gtt) {
1189                 DRM_ERROR("ioremap of GTT failed\n");
1190                 return 0;
1191         }
1192
1193         entry = *(volatile u32 *)(gtt + (gtt_addr / 1024));
1194
1195         DRM_DEBUG_DRIVER("GTT addr: 0x%08lx, PTE: 0x%08lx\n", gtt_addr, entry);
1196
1197         /* Mask out these reserved bits on this hardware. */
1198         if (!IS_I9XX(dev) || IS_I915G(dev) || IS_I915GM(dev) ||
1199             IS_I945G(dev) || IS_I945GM(dev)) {
1200                 entry &= ~PTE_ADDRESS_MASK_HIGH;
1201         }
1202
1203         /* If it's not a mapping type we know, then bail. */
1204         if ((entry & PTE_MAPPING_TYPE_MASK) != PTE_MAPPING_TYPE_UNCACHED &&
1205             (entry & PTE_MAPPING_TYPE_MASK) != PTE_MAPPING_TYPE_CACHED) {
1206                 iounmap(gtt);
1207                 return 0;
1208         }
1209
1210         if (!(entry & PTE_VALID)) {
1211                 DRM_ERROR("bad GTT entry in stolen space\n");
1212                 iounmap(gtt);
1213                 return 0;
1214         }
1215
1216         iounmap(gtt);
1217
1218         phys =(entry & PTE_ADDRESS_MASK) |
1219                 ((uint64_t)(entry & PTE_ADDRESS_MASK_HIGH) << (32 - 4));
1220
1221         DRM_DEBUG_DRIVER("GTT addr: 0x%08lx, phys addr: 0x%08lx\n", gtt_addr, phys);
1222
1223         return phys;
1224 }
1225
1226 static void i915_warn_stolen(struct drm_device *dev)
1227 {
1228         DRM_ERROR("not enough stolen space for compressed buffer, disabling\n");
1229         DRM_ERROR("hint: you may be able to increase stolen memory size in the BIOS to avoid this\n");
1230 }
1231
1232 static void i915_setup_compression(struct drm_device *dev, int size)
1233 {
1234         struct drm_i915_private *dev_priv = dev->dev_private;
1235         struct drm_mm_node *compressed_fb, *uninitialized_var(compressed_llb);
1236         unsigned long cfb_base;
1237         unsigned long ll_base = 0;
1238
1239         /* Leave 1M for line length buffer & misc. */
1240         compressed_fb = drm_mm_search_free(&dev_priv->vram, size, 4096, 0);
1241         if (!compressed_fb) {
1242                 dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
1243                 i915_warn_stolen(dev);
1244                 return;
1245         }
1246
1247         compressed_fb = drm_mm_get_block(compressed_fb, size, 4096);
1248         if (!compressed_fb) {
1249                 i915_warn_stolen(dev);
1250                 dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
1251                 return;
1252         }
1253
1254         cfb_base = i915_gtt_to_phys(dev, compressed_fb->start);
1255         if (!cfb_base) {
1256                 DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
1257                 drm_mm_put_block(compressed_fb);
1258         }
1259
1260         if (!(IS_GM45(dev) || IS_IRONLAKE_M(dev))) {
1261                 compressed_llb = drm_mm_search_free(&dev_priv->vram, 4096,
1262                                                     4096, 0);
1263                 if (!compressed_llb) {
1264                         i915_warn_stolen(dev);
1265                         return;
1266                 }
1267
1268                 compressed_llb = drm_mm_get_block(compressed_llb, 4096, 4096);
1269                 if (!compressed_llb) {
1270                         i915_warn_stolen(dev);
1271                         return;
1272                 }
1273
1274                 ll_base = i915_gtt_to_phys(dev, compressed_llb->start);
1275                 if (!ll_base) {
1276                         DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
1277                         drm_mm_put_block(compressed_fb);
1278                         drm_mm_put_block(compressed_llb);
1279                 }
1280         }
1281
1282         dev_priv->cfb_size = size;
1283
1284         intel_disable_fbc(dev);
1285         dev_priv->compressed_fb = compressed_fb;
1286         if (IS_IRONLAKE_M(dev))
1287                 I915_WRITE(ILK_DPFC_CB_BASE, compressed_fb->start);
1288         else if (IS_GM45(dev)) {
1289                 I915_WRITE(DPFC_CB_BASE, compressed_fb->start);
1290         } else {
1291                 I915_WRITE(FBC_CFB_BASE, cfb_base);
1292                 I915_WRITE(FBC_LL_BASE, ll_base);
1293                 dev_priv->compressed_llb = compressed_llb;
1294         }
1295
1296         DRM_DEBUG_KMS("FBC base 0x%08lx, ll base 0x%08lx, size %dM\n", cfb_base,
1297                   ll_base, size >> 20);
1298 }
1299
1300 static void i915_cleanup_compression(struct drm_device *dev)
1301 {
1302         struct drm_i915_private *dev_priv = dev->dev_private;
1303
1304         drm_mm_put_block(dev_priv->compressed_fb);
1305         if (dev_priv->compressed_llb)
1306                 drm_mm_put_block(dev_priv->compressed_llb);
1307 }
1308
1309 /* true = enable decode, false = disable decoder */
1310 static unsigned int i915_vga_set_decode(void *cookie, bool state)
1311 {
1312         struct drm_device *dev = cookie;
1313
1314         intel_modeset_vga_set_state(dev, state);
1315         if (state)
1316                 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
1317                        VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1318         else
1319                 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1320 }
1321
1322 static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
1323 {
1324         struct drm_device *dev = pci_get_drvdata(pdev);
1325         pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
1326         if (state == VGA_SWITCHEROO_ON) {
1327                 printk(KERN_INFO "i915: switched on\n");
1328                 /* i915 resume handler doesn't set to D0 */
1329                 pci_set_power_state(dev->pdev, PCI_D0);
1330                 i915_resume(dev);
1331                 drm_kms_helper_poll_enable(dev);
1332         } else {
1333                 printk(KERN_ERR "i915: switched off\n");
1334                 drm_kms_helper_poll_disable(dev);
1335                 i915_suspend(dev, pmm);
1336         }
1337 }
1338
1339 static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
1340 {
1341         struct drm_device *dev = pci_get_drvdata(pdev);
1342         bool can_switch;
1343
1344         spin_lock(&dev->count_lock);
1345         can_switch = (dev->open_count == 0);
1346         spin_unlock(&dev->count_lock);
1347         return can_switch;
1348 }
1349
1350 static int i915_load_modeset_init(struct drm_device *dev,
1351                                   unsigned long prealloc_start,
1352                                   unsigned long prealloc_size,
1353                                   unsigned long agp_size)
1354 {
1355         struct drm_i915_private *dev_priv = dev->dev_private;
1356         int fb_bar = IS_I9XX(dev) ? 2 : 0;
1357         int ret = 0;
1358
1359         dev->mode_config.fb_base = pci_resource_start(dev->pdev, fb_bar) &
1360                 0xff000000;
1361
1362         /* Basic memrange allocator for stolen space (aka vram) */
1363         drm_mm_init(&dev_priv->vram, 0, prealloc_size);
1364         DRM_INFO("set up %ldM of stolen space\n", prealloc_size / (1024*1024));
1365
1366         /* We're off and running w/KMS */
1367         dev_priv->mm.suspended = 0;
1368
1369         /* Let GEM Manage from end of prealloc space to end of aperture.
1370          *
1371          * However, leave one page at the end still bound to the scratch page.
1372          * There are a number of places where the hardware apparently
1373          * prefetches past the end of the object, and we've seen multiple
1374          * hangs with the GPU head pointer stuck in a batchbuffer bound
1375          * at the last page of the aperture.  One page should be enough to
1376          * keep any prefetching inside of the aperture.
1377          */
1378         i915_gem_do_init(dev, prealloc_size, agp_size - 4096);
1379
1380         mutex_lock(&dev->struct_mutex);
1381         ret = i915_gem_init_ringbuffer(dev);
1382         mutex_unlock(&dev->struct_mutex);
1383         if (ret)
1384                 goto out;
1385
1386         /* Try to set up FBC with a reasonable compressed buffer size */
1387         if (I915_HAS_FBC(dev) && i915_powersave) {
1388                 int cfb_size;
1389
1390                 /* Try to get an 8M buffer... */
1391                 if (prealloc_size > (9*1024*1024))
1392                         cfb_size = 8*1024*1024;
1393                 else /* fall back to 7/8 of the stolen space */
1394                         cfb_size = prealloc_size * 7 / 8;
1395                 i915_setup_compression(dev, cfb_size);
1396         }
1397
1398         /* Allow hardware batchbuffers unless told otherwise.
1399          */
1400         dev_priv->allow_batchbuffer = 1;
1401
1402         ret = intel_init_bios(dev);
1403         if (ret)
1404                 DRM_INFO("failed to find VBIOS tables\n");
1405
1406         /* if we have > 1 VGA cards, then disable the radeon VGA resources */
1407         ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode);
1408         if (ret)
1409                 goto cleanup_ringbuffer;
1410
1411         ret = vga_switcheroo_register_client(dev->pdev,
1412                                              i915_switcheroo_set_state,
1413                                              i915_switcheroo_can_switch);
1414         if (ret)
1415                 goto cleanup_vga_client;
1416
1417         /* IIR "flip pending" bit means done if this bit is set */
1418         if (IS_GEN3(dev) && (I915_READ(ECOSKPD) & ECO_FLIP_DONE))
1419                 dev_priv->flip_pending_is_done = true;
1420
1421         intel_modeset_init(dev);
1422
1423         ret = drm_irq_install(dev);
1424         if (ret)
1425                 goto cleanup_vga_switcheroo;
1426
1427         /* Always safe in the mode setting case. */
1428         /* FIXME: do pre/post-mode set stuff in core KMS code */
1429         dev->vblank_disable_allowed = 1;
1430
1431         /*
1432          * Initialize the hardware status page IRQ location.
1433          */
1434
1435         I915_WRITE(INSTPM, (1 << 5) | (1 << 21));
1436
1437         ret = intel_fbdev_init(dev);
1438         if (ret)
1439                 goto cleanup_irq;
1440
1441         drm_kms_helper_poll_init(dev);
1442         return 0;
1443
1444 cleanup_irq:
1445         drm_irq_uninstall(dev);
1446 cleanup_vga_switcheroo:
1447         vga_switcheroo_unregister_client(dev->pdev);
1448 cleanup_vga_client:
1449         vga_client_register(dev->pdev, NULL, NULL, NULL);
1450 cleanup_ringbuffer:
1451         mutex_lock(&dev->struct_mutex);
1452         i915_gem_cleanup_ringbuffer(dev);
1453         mutex_unlock(&dev->struct_mutex);
1454 out:
1455         return ret;
1456 }
1457
1458 int i915_master_create(struct drm_device *dev, struct drm_master *master)
1459 {
1460         struct drm_i915_master_private *master_priv;
1461
1462         master_priv = kzalloc(sizeof(*master_priv), GFP_KERNEL);
1463         if (!master_priv)
1464                 return -ENOMEM;
1465
1466         master->driver_priv = master_priv;
1467         return 0;
1468 }
1469
1470 void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
1471 {
1472         struct drm_i915_master_private *master_priv = master->driver_priv;
1473
1474         if (!master_priv)
1475                 return;
1476
1477         kfree(master_priv);
1478
1479         master->driver_priv = NULL;
1480 }
1481
1482 static void i915_pineview_get_mem_freq(struct drm_device *dev)
1483 {
1484         drm_i915_private_t *dev_priv = dev->dev_private;
1485         u32 tmp;
1486
1487         tmp = I915_READ(CLKCFG);
1488
1489         switch (tmp & CLKCFG_FSB_MASK) {
1490         case CLKCFG_FSB_533:
1491                 dev_priv->fsb_freq = 533; /* 133*4 */
1492                 break;
1493         case CLKCFG_FSB_800:
1494                 dev_priv->fsb_freq = 800; /* 200*4 */
1495                 break;
1496         case CLKCFG_FSB_667:
1497                 dev_priv->fsb_freq =  667; /* 167*4 */
1498                 break;
1499         case CLKCFG_FSB_400:
1500                 dev_priv->fsb_freq = 400; /* 100*4 */
1501                 break;
1502         }
1503
1504         switch (tmp & CLKCFG_MEM_MASK) {
1505         case CLKCFG_MEM_533:
1506                 dev_priv->mem_freq = 533;
1507                 break;
1508         case CLKCFG_MEM_667:
1509                 dev_priv->mem_freq = 667;
1510                 break;
1511         case CLKCFG_MEM_800:
1512                 dev_priv->mem_freq = 800;
1513                 break;
1514         }
1515
1516         /* detect pineview DDR3 setting */
1517         tmp = I915_READ(CSHRDDR3CTL);
1518         dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0;
1519 }
1520
1521 static void i915_ironlake_get_mem_freq(struct drm_device *dev)
1522 {
1523         drm_i915_private_t *dev_priv = dev->dev_private;
1524         u16 ddrpll, csipll;
1525
1526         ddrpll = I915_READ16(DDRMPLL1);
1527         csipll = I915_READ16(CSIPLL0);
1528
1529         switch (ddrpll & 0xff) {
1530         case 0xc:
1531                 dev_priv->mem_freq = 800;
1532                 break;
1533         case 0x10:
1534                 dev_priv->mem_freq = 1066;
1535                 break;
1536         case 0x14:
1537                 dev_priv->mem_freq = 1333;
1538                 break;
1539         case 0x18:
1540                 dev_priv->mem_freq = 1600;
1541                 break;
1542         default:
1543                 DRM_DEBUG_DRIVER("unknown memory frequency 0x%02x\n",
1544                                  ddrpll & 0xff);
1545                 dev_priv->mem_freq = 0;
1546                 break;
1547         }
1548
1549         dev_priv->r_t = dev_priv->mem_freq;
1550
1551         switch (csipll & 0x3ff) {
1552         case 0x00c:
1553                 dev_priv->fsb_freq = 3200;
1554                 break;
1555         case 0x00e:
1556                 dev_priv->fsb_freq = 3733;
1557                 break;
1558         case 0x010:
1559                 dev_priv->fsb_freq = 4266;
1560                 break;
1561         case 0x012:
1562                 dev_priv->fsb_freq = 4800;
1563                 break;
1564         case 0x014:
1565                 dev_priv->fsb_freq = 5333;
1566                 break;
1567         case 0x016:
1568                 dev_priv->fsb_freq = 5866;
1569                 break;
1570         case 0x018:
1571                 dev_priv->fsb_freq = 6400;
1572                 break;
1573         default:
1574                 DRM_DEBUG_DRIVER("unknown fsb frequency 0x%04x\n",
1575                                  csipll & 0x3ff);
1576                 dev_priv->fsb_freq = 0;
1577                 break;
1578         }
1579
1580         if (dev_priv->fsb_freq == 3200) {
1581                 dev_priv->c_m = 0;
1582         } else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) {
1583                 dev_priv->c_m = 1;
1584         } else {
1585                 dev_priv->c_m = 2;
1586         }
1587 }
1588
1589 struct v_table {
1590         u8 vid;
1591         unsigned long vd; /* in .1 mil */
1592         unsigned long vm; /* in .1 mil */
1593         u8 pvid;
1594 };
1595
1596 static struct v_table v_table[] = {
1597         { 0, 16125, 15000, 0x7f, },
1598         { 1, 16000, 14875, 0x7e, },
1599         { 2, 15875, 14750, 0x7d, },
1600         { 3, 15750, 14625, 0x7c, },
1601         { 4, 15625, 14500, 0x7b, },
1602         { 5, 15500, 14375, 0x7a, },
1603         { 6, 15375, 14250, 0x79, },
1604         { 7, 15250, 14125, 0x78, },
1605         { 8, 15125, 14000, 0x77, },
1606         { 9, 15000, 13875, 0x76, },
1607         { 10, 14875, 13750, 0x75, },
1608         { 11, 14750, 13625, 0x74, },
1609         { 12, 14625, 13500, 0x73, },
1610         { 13, 14500, 13375, 0x72, },
1611         { 14, 14375, 13250, 0x71, },
1612         { 15, 14250, 13125, 0x70, },
1613         { 16, 14125, 13000, 0x6f, },
1614         { 17, 14000, 12875, 0x6e, },
1615         { 18, 13875, 12750, 0x6d, },
1616         { 19, 13750, 12625, 0x6c, },
1617         { 20, 13625, 12500, 0x6b, },
1618         { 21, 13500, 12375, 0x6a, },
1619         { 22, 13375, 12250, 0x69, },
1620         { 23, 13250, 12125, 0x68, },
1621         { 24, 13125, 12000, 0x67, },
1622         { 25, 13000, 11875, 0x66, },
1623         { 26, 12875, 11750, 0x65, },
1624         { 27, 12750, 11625, 0x64, },
1625         { 28, 12625, 11500, 0x63, },
1626         { 29, 12500, 11375, 0x62, },
1627         { 30, 12375, 11250, 0x61, },
1628         { 31, 12250, 11125, 0x60, },
1629         { 32, 12125, 11000, 0x5f, },
1630         { 33, 12000, 10875, 0x5e, },
1631         { 34, 11875, 10750, 0x5d, },
1632         { 35, 11750, 10625, 0x5c, },
1633         { 36, 11625, 10500, 0x5b, },
1634         { 37, 11500, 10375, 0x5a, },
1635         { 38, 11375, 10250, 0x59, },
1636         { 39, 11250, 10125, 0x58, },
1637         { 40, 11125, 10000, 0x57, },
1638         { 41, 11000, 9875, 0x56, },
1639         { 42, 10875, 9750, 0x55, },
1640         { 43, 10750, 9625, 0x54, },
1641         { 44, 10625, 9500, 0x53, },
1642         { 45, 10500, 9375, 0x52, },
1643         { 46, 10375, 9250, 0x51, },
1644         { 47, 10250, 9125, 0x50, },
1645         { 48, 10125, 9000, 0x4f, },
1646         { 49, 10000, 8875, 0x4e, },
1647         { 50, 9875, 8750, 0x4d, },
1648         { 51, 9750, 8625, 0x4c, },
1649         { 52, 9625, 8500, 0x4b, },
1650         { 53, 9500, 8375, 0x4a, },
1651         { 54, 9375, 8250, 0x49, },
1652         { 55, 9250, 8125, 0x48, },
1653         { 56, 9125, 8000, 0x47, },
1654         { 57, 9000, 7875, 0x46, },
1655         { 58, 8875, 7750, 0x45, },
1656         { 59, 8750, 7625, 0x44, },
1657         { 60, 8625, 7500, 0x43, },
1658         { 61, 8500, 7375, 0x42, },
1659         { 62, 8375, 7250, 0x41, },
1660         { 63, 8250, 7125, 0x40, },
1661         { 64, 8125, 7000, 0x3f, },
1662         { 65, 8000, 6875, 0x3e, },
1663         { 66, 7875, 6750, 0x3d, },
1664         { 67, 7750, 6625, 0x3c, },
1665         { 68, 7625, 6500, 0x3b, },
1666         { 69, 7500, 6375, 0x3a, },
1667         { 70, 7375, 6250, 0x39, },
1668         { 71, 7250, 6125, 0x38, },
1669         { 72, 7125, 6000, 0x37, },
1670         { 73, 7000, 5875, 0x36, },
1671         { 74, 6875, 5750, 0x35, },
1672         { 75, 6750, 5625, 0x34, },
1673         { 76, 6625, 5500, 0x33, },
1674         { 77, 6500, 5375, 0x32, },
1675         { 78, 6375, 5250, 0x31, },
1676         { 79, 6250, 5125, 0x30, },
1677         { 80, 6125, 5000, 0x2f, },
1678         { 81, 6000, 4875, 0x2e, },
1679         { 82, 5875, 4750, 0x2d, },
1680         { 83, 5750, 4625, 0x2c, },
1681         { 84, 5625, 4500, 0x2b, },
1682         { 85, 5500, 4375, 0x2a, },
1683         { 86, 5375, 4250, 0x29, },
1684         { 87, 5250, 4125, 0x28, },
1685         { 88, 5125, 4000, 0x27, },
1686         { 89, 5000, 3875, 0x26, },
1687         { 90, 4875, 3750, 0x25, },
1688         { 91, 4750, 3625, 0x24, },
1689         { 92, 4625, 3500, 0x23, },
1690         { 93, 4500, 3375, 0x22, },
1691         { 94, 4375, 3250, 0x21, },
1692         { 95, 4250, 3125, 0x20, },
1693         { 96, 4125, 3000, 0x1f, },
1694         { 97, 4125, 3000, 0x1e, },
1695         { 98, 4125, 3000, 0x1d, },
1696         { 99, 4125, 3000, 0x1c, },
1697         { 100, 4125, 3000, 0x1b, },
1698         { 101, 4125, 3000, 0x1a, },
1699         { 102, 4125, 3000, 0x19, },
1700         { 103, 4125, 3000, 0x18, },
1701         { 104, 4125, 3000, 0x17, },
1702         { 105, 4125, 3000, 0x16, },
1703         { 106, 4125, 3000, 0x15, },
1704         { 107, 4125, 3000, 0x14, },
1705         { 108, 4125, 3000, 0x13, },
1706         { 109, 4125, 3000, 0x12, },
1707         { 110, 4125, 3000, 0x11, },
1708         { 111, 4125, 3000, 0x10, },
1709         { 112, 4125, 3000, 0x0f, },
1710         { 113, 4125, 3000, 0x0e, },
1711         { 114, 4125, 3000, 0x0d, },
1712         { 115, 4125, 3000, 0x0c, },
1713         { 116, 4125, 3000, 0x0b, },
1714         { 117, 4125, 3000, 0x0a, },
1715         { 118, 4125, 3000, 0x09, },
1716         { 119, 4125, 3000, 0x08, },
1717         { 120, 1125, 0, 0x07, },
1718         { 121, 1000, 0, 0x06, },
1719         { 122, 875, 0, 0x05, },
1720         { 123, 750, 0, 0x04, },
1721         { 124, 625, 0, 0x03, },
1722         { 125, 500, 0, 0x02, },
1723         { 126, 375, 0, 0x01, },
1724         { 127, 0, 0, 0x00, },
1725 };
1726
1727 struct cparams {
1728         int i;
1729         int t;
1730         int m;
1731         int c;
1732 };
1733
1734 static struct cparams cparams[] = {
1735         { 1, 1333, 301, 28664 },
1736         { 1, 1066, 294, 24460 },
1737         { 1, 800, 294, 25192 },
1738         { 0, 1333, 276, 27605 },
1739         { 0, 1066, 276, 27605 },
1740         { 0, 800, 231, 23784 },
1741 };
1742
1743 unsigned long i915_chipset_val(struct drm_i915_private *dev_priv)
1744 {
1745         u64 total_count, diff, ret;
1746         u32 count1, count2, count3, m = 0, c = 0;
1747         unsigned long now = jiffies_to_msecs(jiffies), diff1;
1748         int i;
1749
1750         diff1 = now - dev_priv->last_time1;
1751
1752         count1 = I915_READ(DMIEC);
1753         count2 = I915_READ(DDREC);
1754         count3 = I915_READ(CSIEC);
1755
1756         total_count = count1 + count2 + count3;
1757
1758         /* FIXME: handle per-counter overflow */
1759         if (total_count < dev_priv->last_count1) {
1760                 diff = ~0UL - dev_priv->last_count1;
1761                 diff += total_count;
1762         } else {
1763                 diff = total_count - dev_priv->last_count1;
1764         }
1765
1766         for (i = 0; i < ARRAY_SIZE(cparams); i++) {
1767                 if (cparams[i].i == dev_priv->c_m &&
1768                     cparams[i].t == dev_priv->r_t) {
1769                         m = cparams[i].m;
1770                         c = cparams[i].c;
1771                         break;
1772                 }
1773         }
1774
1775         div_u64(diff, diff1);
1776         ret = ((m * diff) + c);
1777         div_u64(ret, 10);
1778
1779         dev_priv->last_count1 = total_count;
1780         dev_priv->last_time1 = now;
1781
1782         return ret;
1783 }
1784
1785 unsigned long i915_mch_val(struct drm_i915_private *dev_priv)
1786 {
1787         unsigned long m, x, b;
1788         u32 tsfs;
1789
1790         tsfs = I915_READ(TSFS);
1791
1792         m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT);
1793         x = I915_READ8(TR1);
1794
1795         b = tsfs & TSFS_INTR_MASK;
1796
1797         return ((m * x) / 127) - b;
1798 }
1799
1800 static unsigned long pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid)
1801 {
1802         unsigned long val = 0;
1803         int i;
1804
1805         for (i = 0; i < ARRAY_SIZE(v_table); i++) {
1806                 if (v_table[i].pvid == pxvid) {
1807                         if (IS_MOBILE(dev_priv->dev))
1808                                 val = v_table[i].vm;
1809                         else
1810                                 val = v_table[i].vd;
1811                 }
1812         }
1813
1814         return val;
1815 }
1816
1817 void i915_update_gfx_val(struct drm_i915_private *dev_priv)
1818 {
1819         struct timespec now, diff1;
1820         u64 diff;
1821         unsigned long diffms;
1822         u32 count;
1823
1824         getrawmonotonic(&now);
1825         diff1 = timespec_sub(now, dev_priv->last_time2);
1826
1827         /* Don't divide by 0 */
1828         diffms = diff1.tv_sec * 1000 + diff1.tv_nsec / 1000000;
1829         if (!diffms)
1830                 return;
1831
1832         count = I915_READ(GFXEC);
1833
1834         if (count < dev_priv->last_count2) {
1835                 diff = ~0UL - dev_priv->last_count2;
1836                 diff += count;
1837         } else {
1838                 diff = count - dev_priv->last_count2;
1839         }
1840
1841         dev_priv->last_count2 = count;
1842         dev_priv->last_time2 = now;
1843
1844         /* More magic constants... */
1845         diff = diff * 1181;
1846         div_u64(diff, diffms * 10);
1847         dev_priv->gfx_power = diff;
1848 }
1849
1850 unsigned long i915_gfx_val(struct drm_i915_private *dev_priv)
1851 {
1852         unsigned long t, corr, state1, corr2, state2;
1853         u32 pxvid, ext_v;
1854
1855         pxvid = I915_READ(PXVFREQ_BASE + (dev_priv->cur_delay * 4));
1856         pxvid = (pxvid >> 24) & 0x7f;
1857         ext_v = pvid_to_extvid(dev_priv, pxvid);
1858
1859         state1 = ext_v;
1860
1861         t = i915_mch_val(dev_priv);
1862
1863         /* Revel in the empirically derived constants */
1864
1865         /* Correction factor in 1/100000 units */
1866         if (t > 80)
1867                 corr = ((t * 2349) + 135940);
1868         else if (t >= 50)
1869                 corr = ((t * 964) + 29317);
1870         else /* < 50 */
1871                 corr = ((t * 301) + 1004);
1872
1873         corr = corr * ((150142 * state1) / 10000 - 78642);
1874         corr /= 100000;
1875         corr2 = (corr * dev_priv->corr);
1876
1877         state2 = (corr2 * state1) / 10000;
1878         state2 /= 100; /* convert to mW */
1879
1880         i915_update_gfx_val(dev_priv);
1881
1882         return dev_priv->gfx_power + state2;
1883 }
1884
1885 /* Global for IPS driver to get at the current i915 device */
1886 static struct drm_i915_private *i915_mch_dev;
1887 /*
1888  * Lock protecting IPS related data structures
1889  *   - i915_mch_dev
1890  *   - dev_priv->max_delay
1891  *   - dev_priv->min_delay
1892  *   - dev_priv->fmax
1893  *   - dev_priv->gpu_busy
1894  */
1895 DEFINE_SPINLOCK(mchdev_lock);
1896
1897 /**
1898  * i915_read_mch_val - return value for IPS use
1899  *
1900  * Calculate and return a value for the IPS driver to use when deciding whether
1901  * we have thermal and power headroom to increase CPU or GPU power budget.
1902  */
1903 unsigned long i915_read_mch_val(void)
1904 {
1905         struct drm_i915_private *dev_priv;
1906         unsigned long chipset_val, graphics_val, ret = 0;
1907
1908         spin_lock(&mchdev_lock);
1909         if (!i915_mch_dev)
1910                 goto out_unlock;
1911         dev_priv = i915_mch_dev;
1912
1913         chipset_val = i915_chipset_val(dev_priv);
1914         graphics_val = i915_gfx_val(dev_priv);
1915
1916         ret = chipset_val + graphics_val;
1917
1918 out_unlock:
1919         spin_unlock(&mchdev_lock);
1920
1921         return ret;
1922 }
1923 EXPORT_SYMBOL_GPL(i915_read_mch_val);
1924
1925 /**
1926  * i915_gpu_raise - raise GPU frequency limit
1927  *
1928  * Raise the limit; IPS indicates we have thermal headroom.
1929  */
1930 bool i915_gpu_raise(void)
1931 {
1932         struct drm_i915_private *dev_priv;
1933         bool ret = true;
1934
1935         spin_lock(&mchdev_lock);
1936         if (!i915_mch_dev) {
1937                 ret = false;
1938                 goto out_unlock;
1939         }
1940         dev_priv = i915_mch_dev;
1941
1942         if (dev_priv->max_delay > dev_priv->fmax)
1943                 dev_priv->max_delay--;
1944
1945 out_unlock:
1946         spin_unlock(&mchdev_lock);
1947
1948         return ret;
1949 }
1950 EXPORT_SYMBOL_GPL(i915_gpu_raise);
1951
1952 /**
1953  * i915_gpu_lower - lower GPU frequency limit
1954  *
1955  * IPS indicates we're close to a thermal limit, so throttle back the GPU
1956  * frequency maximum.
1957  */
1958 bool i915_gpu_lower(void)
1959 {
1960         struct drm_i915_private *dev_priv;
1961         bool ret = true;
1962
1963         spin_lock(&mchdev_lock);
1964         if (!i915_mch_dev) {
1965                 ret = false;
1966                 goto out_unlock;
1967         }
1968         dev_priv = i915_mch_dev;
1969
1970         if (dev_priv->max_delay < dev_priv->min_delay)
1971                 dev_priv->max_delay++;
1972
1973 out_unlock:
1974         spin_unlock(&mchdev_lock);
1975
1976         return ret;
1977 }
1978 EXPORT_SYMBOL_GPL(i915_gpu_lower);
1979
1980 /**
1981  * i915_gpu_busy - indicate GPU business to IPS
1982  *
1983  * Tell the IPS driver whether or not the GPU is busy.
1984  */
1985 bool i915_gpu_busy(void)
1986 {
1987         struct drm_i915_private *dev_priv;
1988         bool ret = false;
1989
1990         spin_lock(&mchdev_lock);
1991         if (!i915_mch_dev)
1992                 goto out_unlock;
1993         dev_priv = i915_mch_dev;
1994
1995         ret = dev_priv->busy;
1996
1997 out_unlock:
1998         spin_unlock(&mchdev_lock);
1999
2000         return ret;
2001 }
2002 EXPORT_SYMBOL_GPL(i915_gpu_busy);
2003
2004 /**
2005  * i915_gpu_turbo_disable - disable graphics turbo
2006  *
2007  * Disable graphics turbo by resetting the max frequency and setting the
2008  * current frequency to the default.
2009  */
2010 bool i915_gpu_turbo_disable(void)
2011 {
2012         struct drm_i915_private *dev_priv;
2013         bool ret = true;
2014
2015         spin_lock(&mchdev_lock);
2016         if (!i915_mch_dev) {
2017                 ret = false;
2018                 goto out_unlock;
2019         }
2020         dev_priv = i915_mch_dev;
2021
2022         dev_priv->max_delay = dev_priv->fstart;
2023
2024         if (!ironlake_set_drps(dev_priv->dev, dev_priv->fstart))
2025                 ret = false;
2026
2027 out_unlock:
2028         spin_unlock(&mchdev_lock);
2029
2030         return ret;
2031 }
2032 EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable);
2033
2034 /**
2035  * i915_driver_load - setup chip and create an initial config
2036  * @dev: DRM device
2037  * @flags: startup flags
2038  *
2039  * The driver load routine has to do several things:
2040  *   - drive output discovery via intel_modeset_init()
2041  *   - initialize the memory manager
2042  *   - allocate initial config memory
2043  *   - setup the DRM framebuffer with the allocated memory
2044  */
2045 int i915_driver_load(struct drm_device *dev, unsigned long flags)
2046 {
2047         struct drm_i915_private *dev_priv;
2048         resource_size_t base, size;
2049         int ret = 0, mmio_bar;
2050         uint32_t agp_size, prealloc_size, prealloc_start;
2051         /* i915 has 4 more counters */
2052         dev->counters += 4;
2053         dev->types[6] = _DRM_STAT_IRQ;
2054         dev->types[7] = _DRM_STAT_PRIMARY;
2055         dev->types[8] = _DRM_STAT_SECONDARY;
2056         dev->types[9] = _DRM_STAT_DMA;
2057
2058         dev_priv = kzalloc(sizeof(drm_i915_private_t), GFP_KERNEL);
2059         if (dev_priv == NULL)
2060                 return -ENOMEM;
2061
2062         dev->dev_private = (void *)dev_priv;
2063         dev_priv->dev = dev;
2064         dev_priv->info = (struct intel_device_info *) flags;
2065
2066         /* Add register map (needed for suspend/resume) */
2067         mmio_bar = IS_I9XX(dev) ? 0 : 1;
2068         base = pci_resource_start(dev->pdev, mmio_bar);
2069         size = pci_resource_len(dev->pdev, mmio_bar);
2070
2071         if (i915_get_bridge_dev(dev)) {
2072                 ret = -EIO;
2073                 goto free_priv;
2074         }
2075
2076         dev_priv->regs = ioremap(base, size);
2077         if (!dev_priv->regs) {
2078                 DRM_ERROR("failed to map registers\n");
2079                 ret = -EIO;
2080                 goto put_bridge;
2081         }
2082
2083         dev_priv->mm.gtt_mapping =
2084                 io_mapping_create_wc(dev->agp->base,
2085                                      dev->agp->agp_info.aper_size * 1024*1024);
2086         if (dev_priv->mm.gtt_mapping == NULL) {
2087                 ret = -EIO;
2088                 goto out_rmmap;
2089         }
2090
2091         /* Set up a WC MTRR for non-PAT systems.  This is more common than
2092          * one would think, because the kernel disables PAT on first
2093          * generation Core chips because WC PAT gets overridden by a UC
2094          * MTRR if present.  Even if a UC MTRR isn't present.
2095          */
2096         dev_priv->mm.gtt_mtrr = mtrr_add(dev->agp->base,
2097                                          dev->agp->agp_info.aper_size *
2098                                          1024 * 1024,
2099                                          MTRR_TYPE_WRCOMB, 1);
2100         if (dev_priv->mm.gtt_mtrr < 0) {
2101                 DRM_INFO("MTRR allocation failed.  Graphics "
2102                          "performance may suffer.\n");
2103         }
2104
2105         ret = i915_probe_agp(dev, &agp_size, &prealloc_size, &prealloc_start);
2106         if (ret)
2107                 goto out_iomapfree;
2108
2109         dev_priv->wq = create_singlethread_workqueue("i915");
2110         if (dev_priv->wq == NULL) {
2111                 DRM_ERROR("Failed to create our workqueue.\n");
2112                 ret = -ENOMEM;
2113                 goto out_iomapfree;
2114         }
2115
2116         /* enable GEM by default */
2117         dev_priv->has_gem = 1;
2118
2119         if (prealloc_size > agp_size * 3 / 4) {
2120                 DRM_ERROR("Detected broken video BIOS with %d/%dkB of video "
2121                           "memory stolen.\n",
2122                           prealloc_size / 1024, agp_size / 1024);
2123                 DRM_ERROR("Disabling GEM. (try reducing stolen memory or "
2124                           "updating the BIOS to fix).\n");
2125                 dev_priv->has_gem = 0;
2126         }
2127
2128         if (dev_priv->has_gem == 0 &&
2129             drm_core_check_feature(dev, DRIVER_MODESET)) {
2130                 DRM_ERROR("kernel modesetting requires GEM, disabling driver.\n");
2131                 ret = -ENODEV;
2132                 goto out_iomapfree;
2133         }
2134
2135         dev->driver->get_vblank_counter = i915_get_vblank_counter;
2136         dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
2137         if (IS_G4X(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev)) {
2138                 dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
2139                 dev->driver->get_vblank_counter = gm45_get_vblank_counter;
2140         }
2141
2142         /* Try to make sure MCHBAR is enabled before poking at it */
2143         intel_setup_mchbar(dev);
2144
2145         i915_gem_load(dev);
2146
2147         /* Init HWS */
2148         if (!I915_NEED_GFX_HWS(dev)) {
2149                 ret = i915_init_phys_hws(dev);
2150                 if (ret != 0)
2151                         goto out_workqueue_free;
2152         }
2153
2154         if (IS_PINEVIEW(dev))
2155                 i915_pineview_get_mem_freq(dev);
2156         else if (IS_IRONLAKE(dev))
2157                 i915_ironlake_get_mem_freq(dev);
2158
2159         /* On the 945G/GM, the chipset reports the MSI capability on the
2160          * integrated graphics even though the support isn't actually there
2161          * according to the published specs.  It doesn't appear to function
2162          * correctly in testing on 945G.
2163          * This may be a side effect of MSI having been made available for PEG
2164          * and the registers being closely associated.
2165          *
2166          * According to chipset errata, on the 965GM, MSI interrupts may
2167          * be lost or delayed, but we use them anyways to avoid
2168          * stuck interrupts on some machines.
2169          */
2170         if (!IS_I945G(dev) && !IS_I945GM(dev))
2171                 pci_enable_msi(dev->pdev);
2172
2173         spin_lock_init(&dev_priv->user_irq_lock);
2174         spin_lock_init(&dev_priv->error_lock);
2175         dev_priv->trace_irq_seqno = 0;
2176
2177         ret = drm_vblank_init(dev, I915_NUM_PIPE);
2178
2179         if (ret) {
2180                 (void) i915_driver_unload(dev);
2181                 return ret;
2182         }
2183
2184         /* Start out suspended */
2185         dev_priv->mm.suspended = 1;
2186
2187         intel_detect_pch(dev);
2188
2189         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
2190                 ret = i915_load_modeset_init(dev, prealloc_start,
2191                                              prealloc_size, agp_size);
2192                 if (ret < 0) {
2193                         DRM_ERROR("failed to init modeset\n");
2194                         goto out_workqueue_free;
2195                 }
2196         }
2197
2198         /* Must be done after probing outputs */
2199         intel_opregion_init(dev, 0);
2200
2201         setup_timer(&dev_priv->hangcheck_timer, i915_hangcheck_elapsed,
2202                     (unsigned long) dev);
2203
2204         spin_lock(&mchdev_lock);
2205         i915_mch_dev = dev_priv;
2206         dev_priv->mchdev_lock = &mchdev_lock;
2207         spin_unlock(&mchdev_lock);
2208
2209         return 0;
2210
2211 out_workqueue_free:
2212         destroy_workqueue(dev_priv->wq);
2213 out_iomapfree:
2214         io_mapping_free(dev_priv->mm.gtt_mapping);
2215 out_rmmap:
2216         iounmap(dev_priv->regs);
2217 put_bridge:
2218         pci_dev_put(dev_priv->bridge_dev);
2219 free_priv:
2220         kfree(dev_priv);
2221         return ret;
2222 }
2223
2224 int i915_driver_unload(struct drm_device *dev)
2225 {
2226         struct drm_i915_private *dev_priv = dev->dev_private;
2227
2228         i915_destroy_error_state(dev);
2229
2230         spin_lock(&mchdev_lock);
2231         i915_mch_dev = NULL;
2232         spin_unlock(&mchdev_lock);
2233
2234         destroy_workqueue(dev_priv->wq);
2235         del_timer_sync(&dev_priv->hangcheck_timer);
2236
2237         io_mapping_free(dev_priv->mm.gtt_mapping);
2238         if (dev_priv->mm.gtt_mtrr >= 0) {
2239                 mtrr_del(dev_priv->mm.gtt_mtrr, dev->agp->base,
2240                          dev->agp->agp_info.aper_size * 1024 * 1024);
2241                 dev_priv->mm.gtt_mtrr = -1;
2242         }
2243
2244         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
2245                 intel_modeset_cleanup(dev);
2246
2247                 /*
2248                  * free the memory space allocated for the child device
2249                  * config parsed from VBT
2250                  */
2251                 if (dev_priv->child_dev && dev_priv->child_dev_num) {
2252                         kfree(dev_priv->child_dev);
2253                         dev_priv->child_dev = NULL;
2254                         dev_priv->child_dev_num = 0;
2255                 }
2256                 drm_irq_uninstall(dev);
2257                 vga_switcheroo_unregister_client(dev->pdev);
2258                 vga_client_register(dev->pdev, NULL, NULL, NULL);
2259         }
2260
2261         if (dev->pdev->msi_enabled)
2262                 pci_disable_msi(dev->pdev);
2263
2264         if (dev_priv->regs != NULL)
2265                 iounmap(dev_priv->regs);
2266
2267         intel_opregion_free(dev, 0);
2268
2269         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
2270                 i915_gem_free_all_phys_object(dev);
2271
2272                 mutex_lock(&dev->struct_mutex);
2273                 i915_gem_cleanup_ringbuffer(dev);
2274                 mutex_unlock(&dev->struct_mutex);
2275                 if (I915_HAS_FBC(dev) && i915_powersave)
2276                         i915_cleanup_compression(dev);
2277                 drm_mm_takedown(&dev_priv->vram);
2278                 i915_gem_lastclose(dev);
2279
2280                 intel_cleanup_overlay(dev);
2281         }
2282
2283         intel_teardown_mchbar(dev);
2284
2285         pci_dev_put(dev_priv->bridge_dev);
2286         kfree(dev->dev_private);
2287
2288         return 0;
2289 }
2290
2291 int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv)
2292 {
2293         struct drm_i915_file_private *i915_file_priv;
2294
2295         DRM_DEBUG_DRIVER("\n");
2296         i915_file_priv = (struct drm_i915_file_private *)
2297             kmalloc(sizeof(*i915_file_priv), GFP_KERNEL);
2298
2299         if (!i915_file_priv)
2300                 return -ENOMEM;
2301
2302         file_priv->driver_priv = i915_file_priv;
2303
2304         INIT_LIST_HEAD(&i915_file_priv->mm.request_list);
2305
2306         return 0;
2307 }
2308
2309 /**
2310  * i915_driver_lastclose - clean up after all DRM clients have exited
2311  * @dev: DRM device
2312  *
2313  * Take care of cleaning up after all DRM clients have exited.  In the
2314  * mode setting case, we want to restore the kernel's initial mode (just
2315  * in case the last client left us in a bad state).
2316  *
2317  * Additionally, in the non-mode setting case, we'll tear down the AGP
2318  * and DMA structures, since the kernel won't be using them, and clea
2319  * up any GEM state.
2320  */
2321 void i915_driver_lastclose(struct drm_device * dev)
2322 {
2323         drm_i915_private_t *dev_priv = dev->dev_private;
2324
2325         if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) {
2326                 drm_fb_helper_restore();
2327                 vga_switcheroo_process_delayed_switch();
2328                 return;
2329         }
2330
2331         i915_gem_lastclose(dev);
2332
2333         if (dev_priv->agp_heap)
2334                 i915_mem_takedown(&(dev_priv->agp_heap));
2335
2336         i915_dma_cleanup(dev);
2337 }
2338
2339 void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
2340 {
2341         drm_i915_private_t *dev_priv = dev->dev_private;
2342         i915_gem_release(dev, file_priv);
2343         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2344                 i915_mem_release(dev, file_priv, dev_priv->agp_heap);
2345 }
2346
2347 void i915_driver_postclose(struct drm_device *dev, struct drm_file *file_priv)
2348 {
2349         struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv;
2350
2351         kfree(i915_file_priv);
2352 }
2353
2354 struct drm_ioctl_desc i915_ioctls[] = {
2355         DRM_IOCTL_DEF(DRM_I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2356         DRM_IOCTL_DEF(DRM_I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
2357         DRM_IOCTL_DEF(DRM_I915_FLIP, i915_flip_bufs, DRM_AUTH),
2358         DRM_IOCTL_DEF(DRM_I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
2359         DRM_IOCTL_DEF(DRM_I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
2360         DRM_IOCTL_DEF(DRM_I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
2361         DRM_IOCTL_DEF(DRM_I915_GETPARAM, i915_getparam, DRM_AUTH),
2362         DRM_IOCTL_DEF(DRM_I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2363         DRM_IOCTL_DEF(DRM_I915_ALLOC, i915_mem_alloc, DRM_AUTH),
2364         DRM_IOCTL_DEF(DRM_I915_FREE, i915_mem_free, DRM_AUTH),
2365         DRM_IOCTL_DEF(DRM_I915_INIT_HEAP, i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2366         DRM_IOCTL_DEF(DRM_I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
2367         DRM_IOCTL_DEF(DRM_I915_DESTROY_HEAP,  i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
2368         DRM_IOCTL_DEF(DRM_I915_SET_VBLANK_PIPE,  i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
2369         DRM_IOCTL_DEF(DRM_I915_GET_VBLANK_PIPE,  i915_vblank_pipe_get, DRM_AUTH ),
2370         DRM_IOCTL_DEF(DRM_I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
2371         DRM_IOCTL_DEF(DRM_I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2372         DRM_IOCTL_DEF(DRM_I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
2373         DRM_IOCTL_DEF(DRM_I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH|DRM_UNLOCKED),
2374         DRM_IOCTL_DEF(DRM_I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_UNLOCKED),
2375         DRM_IOCTL_DEF(DRM_I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
2376         DRM_IOCTL_DEF(DRM_I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
2377         DRM_IOCTL_DEF(DRM_I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED),
2378         DRM_IOCTL_DEF(DRM_I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_UNLOCKED),
2379         DRM_IOCTL_DEF(DRM_I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
2380         DRM_IOCTL_DEF(DRM_I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
2381         DRM_IOCTL_DEF(DRM_I915_GEM_CREATE, i915_gem_create_ioctl, DRM_UNLOCKED),
2382         DRM_IOCTL_DEF(DRM_I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_UNLOCKED),
2383         DRM_IOCTL_DEF(DRM_I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_UNLOCKED),
2384         DRM_IOCTL_DEF(DRM_I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_UNLOCKED),
2385         DRM_IOCTL_DEF(DRM_I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_UNLOCKED),
2386         DRM_IOCTL_DEF(DRM_I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_UNLOCKED),
2387         DRM_IOCTL_DEF(DRM_I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_UNLOCKED),
2388         DRM_IOCTL_DEF(DRM_I915_GEM_SET_TILING, i915_gem_set_tiling, DRM_UNLOCKED),
2389         DRM_IOCTL_DEF(DRM_I915_GEM_GET_TILING, i915_gem_get_tiling, DRM_UNLOCKED),
2390         DRM_IOCTL_DEF(DRM_I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_UNLOCKED),
2391         DRM_IOCTL_DEF(DRM_I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, DRM_UNLOCKED),
2392         DRM_IOCTL_DEF(DRM_I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_UNLOCKED),
2393         DRM_IOCTL_DEF(DRM_I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
2394         DRM_IOCTL_DEF(DRM_I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
2395 };
2396
2397 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
2398
2399 /**
2400  * Determine if the device really is AGP or not.
2401  *
2402  * All Intel graphics chipsets are treated as AGP, even if they are really
2403  * PCI-e.
2404  *
2405  * \param dev   The device to be tested.
2406  *
2407  * \returns
2408  * A value of 1 is always retured to indictate every i9x5 is AGP.
2409  */
2410 int i915_driver_device_is_agp(struct drm_device * dev)
2411 {
2412         return 1;
2413 }