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 "../../../platform/x86/intel_ips.h"
  38 #include <linux/pci.h>
  39 #include <linux/vgaarb.h>
  40 #include <linux/acpi.h>
  41 #include <linux/pnp.h>
  42 #include <linux/vga_switcheroo.h>
  43 #include <linux/slab.h>
  44
  45 extern int intel_max_stolen; /* from AGP driver */
  46
  47 /**
  48  * Sets up the hardware status page for devices that need a physical address
  49  * in the register.
  50  */
  51 static int i915_init_phys_hws(struct drm_device *dev)
  52 {
  53         drm_i915_private_t *dev_priv = dev->dev_private;
  54         /* Program Hardware Status Page */
  55         dev_priv->status_page_dmah =
  56                 drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE);
  57
  58         if (!dev_priv->status_page_dmah) {
  59                 DRM_ERROR("Can not allocate hardware status page\n");
  60                 return -ENOMEM;
  61         }
  62         dev_priv->render_ring.status_page.page_addr
  63                 = dev_priv->status_page_dmah->vaddr;
  64         dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
  65
  66         memset(dev_priv->render_ring.status_page.page_addr, 0, PAGE_SIZE);
  67
  68         if (IS_I965G(dev))
  69                 dev_priv->dma_status_page |= (dev_priv->dma_status_page >> 28) &
  70                                              0xf0;
  71
  72         I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
  73         DRM_DEBUG_DRIVER("Enabled hardware status page\n");
  74         return 0;
  75 }
  76
  77 /**
  78  * Frees the hardware status page, whether it's a physical address or a virtual
  79  * address set up by the X Server.
  80  */
  81 static void i915_free_hws(struct drm_device *dev)
  82 {
  83         drm_i915_private_t *dev_priv = dev->dev_private;
  84         if (dev_priv->status_page_dmah) {
  85                 drm_pci_free(dev, dev_priv->status_page_dmah);
  86                 dev_priv->status_page_dmah = NULL;
  87         }
  88
  89         if (dev_priv->render_ring.status_page.gfx_addr) {
  90                 dev_priv->render_ring.status_page.gfx_addr = 0;
  91                 drm_core_ioremapfree(&dev_priv->hws_map, dev);
  92         }
  93
  94         /* Need to rewrite hardware status page */
  95         I915_WRITE(HWS_PGA, 0x1ffff000);
  96 }
  97
  98 void i915_kernel_lost_context(struct drm_device * dev)
  99 {
 100         drm_i915_private_t *dev_priv = dev->dev_private;
 101         struct drm_i915_master_private *master_priv;
 102         struct intel_ring_buffer *ring = &dev_priv->render_ring;
 103
 104         /*
 105          * We should never lose context on the ring with modesetting
 106          * as we don't expose it to userspace
 107          */
 108         if (drm_core_check_feature(dev, DRIVER_MODESET))
 109                 return;
 110
 111         ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 112         ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 113         ring->space = ring->head - (ring->tail + 8);
 114         if (ring->space < 0)
 115                 ring->space += ring->size;
 116
 117         if (!dev->primary->master)
 118                 return;
 119
 120         master_priv = dev->primary->master->driver_priv;
 121         if (ring->head == ring->tail && master_priv->sarea_priv)
 122                 master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
 123 }
 124
 125 static int i915_dma_cleanup(struct drm_device * dev)
 126 {
 127         drm_i915_private_t *dev_priv = dev->dev_private;
 128         /* Make sure interrupts are disabled here because the uninstall ioctl
 129          * may not have been called from userspace and after dev_private
 130          * is freed, it's too late.
 131          */
 132         if (dev->irq_enabled)
 133                 drm_irq_uninstall(dev);
 134
 135         mutex_lock(&dev->struct_mutex);
 136         intel_cleanup_ring_buffer(dev, &dev_priv->render_ring);
 137         if (HAS_BSD(dev))
 138                 intel_cleanup_ring_buffer(dev, &dev_priv->bsd_ring);
 139         mutex_unlock(&dev->struct_mutex);
 140
 141         /* Clear the HWS virtual address at teardown */
 142         if (I915_NEED_GFX_HWS(dev))
 143                 i915_free_hws(dev);
 144
 145         return 0;
 146 }
 147
 148 static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
 149 {
 150         drm_i915_private_t *dev_priv = dev->dev_private;
 151         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 152
 153         master_priv->sarea = drm_getsarea(dev);
 154         if (master_priv->sarea) {
 155                 master_priv->sarea_priv = (drm_i915_sarea_t *)
 156                         ((u8 *)master_priv->sarea->handle + init->sarea_priv_offset);
 157         } else {
 158                 DRM_DEBUG_DRIVER("sarea not found assuming DRI2 userspace\n");
 159         }
 160
 161         if (init->ring_size != 0) {
 162                 if (dev_priv->render_ring.gem_object != NULL) {
 163                         i915_dma_cleanup(dev);
 164                         DRM_ERROR("Client tried to initialize ringbuffer in "
 165                                   "GEM mode\n");
 166                         return -EINVAL;
 167                 }
 168
 169                 dev_priv->render_ring.size = init->ring_size;
 170
 171                 dev_priv->render_ring.map.offset = init->ring_start;
 172                 dev_priv->render_ring.map.size = init->ring_size;
 173                 dev_priv->render_ring.map.type = 0;
 174                 dev_priv->render_ring.map.flags = 0;
 175                 dev_priv->render_ring.map.mtrr = 0;
 176
 177                 drm_core_ioremap_wc(&dev_priv->render_ring.map, dev);
 178
 179                 if (dev_priv->render_ring.map.handle == NULL) {
 180                         i915_dma_cleanup(dev);
 181                         DRM_ERROR("can not ioremap virtual address for"
 182                                   " ring buffer\n");
 183                         return -ENOMEM;
 184                 }
 185         }
 186
 187         dev_priv->render_ring.virtual_start = dev_priv->render_ring.map.handle;
 188
 189         dev_priv->cpp = init->cpp;
 190         dev_priv->back_offset = init->back_offset;
 191         dev_priv->front_offset = init->front_offset;
 192         dev_priv->current_page = 0;
 193         if (master_priv->sarea_priv)
 194                 master_priv->sarea_priv->pf_current_page = 0;
 195
 196         /* Allow hardware batchbuffers unless told otherwise.
 197          */
 198         dev_priv->allow_batchbuffer = 1;
 199
 200         return 0;
 201 }
 202
 203 static int i915_dma_resume(struct drm_device * dev)
 204 {
 205         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 206
 207         struct intel_ring_buffer *ring;
 208         DRM_DEBUG_DRIVER("%s\n", __func__);
 209
 210         ring = &dev_priv->render_ring;
 211
 212         if (ring->map.handle == NULL) {
 213                 DRM_ERROR("can not ioremap virtual address for"
 214                           " ring buffer\n");
 215                 return -ENOMEM;
 216         }
 217
 218         /* Program Hardware Status Page */
 219         if (!ring->status_page.page_addr) {
 220                 DRM_ERROR("Can not find hardware status page\n");
 221                 return -EINVAL;
 222         }
 223         DRM_DEBUG_DRIVER("hw status page @ %p\n",
 224                                 ring->status_page.page_addr);
 225         if (ring->status_page.gfx_addr != 0)
 226                 ring->setup_status_page(dev, ring);
 227         else
 228                 I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
 229
 230         DRM_DEBUG_DRIVER("Enabled hardware status page\n");
 231
 232         return 0;
 233 }
 234
 235 static int i915_dma_init(struct drm_device *dev, void *data,
 236                          struct drm_file *file_priv)
 237 {
 238         drm_i915_init_t *init = data;
 239         int retcode = 0;
 240
 241         switch (init->func) {
 242         case I915_INIT_DMA:
 243                 retcode = i915_initialize(dev, init);
 244                 break;
 245         case I915_CLEANUP_DMA:
 246                 retcode = i915_dma_cleanup(dev);
 247                 break;
 248         case I915_RESUME_DMA:
 249                 retcode = i915_dma_resume(dev);
 250                 break;
 251         default:
 252                 retcode = -EINVAL;
 253                 break;
 254         }
 255
 256         return retcode;
 257 }
 258
 259 /* Implement basically the same security restrictions as hardware does
 260  * for MI_BATCH_NON_SECURE.  These can be made stricter at any time.
 261  *
 262  * Most of the calculations below involve calculating the size of a
 263  * particular instruction.  It's important to get the size right as
 264  * that tells us where the next instruction to check is.  Any illegal
 265  * instruction detected will be given a size of zero, which is a
 266  * signal to abort the rest of the buffer.
 267  */
 268 static int do_validate_cmd(int cmd)
 269 {
 270         switch (((cmd >> 29) & 0x7)) {
 271         case 0x0:
 272                 switch ((cmd >> 23) & 0x3f) {
 273                 case 0x0:
 274                         return 1;       /* MI_NOOP */
 275                 case 0x4:
 276                         return 1;       /* MI_FLUSH */
 277                 default:
 278                         return 0;       /* disallow everything else */
 279                 }
 280                 break;
 281         case 0x1:
 282                 return 0;       /* reserved */
 283         case 0x2:
 284                 return (cmd & 0xff) + 2;        /* 2d commands */
 285         case 0x3:
 286                 if (((cmd >> 24) & 0x1f) <= 0x18)
 287                         return 1;
 288
 289                 switch ((cmd >> 24) & 0x1f) {
 290                 case 0x1c:
 291                         return 1;
 292                 case 0x1d:
 293                         switch ((cmd >> 16) & 0xff) {
 294                         case 0x3:
 295                                 return (cmd & 0x1f) + 2;
 296                         case 0x4:
 297                                 return (cmd & 0xf) + 2;
 298                         default:
 299                                 return (cmd & 0xffff) + 2;
 300                         }
 301                 case 0x1e:
 302                         if (cmd & (1 << 23))
 303                                 return (cmd & 0xffff) + 1;
 304                         else
 305                                 return 1;
 306                 case 0x1f:
 307                         if ((cmd & (1 << 23)) == 0)     /* inline vertices */
 308                                 return (cmd & 0x1ffff) + 2;
 309                         else if (cmd & (1 << 17))       /* indirect random */
 310                                 if ((cmd & 0xffff) == 0)
 311                                         return 0;       /* unknown length, too hard */
 312                                 else
 313                                         return (((cmd & 0xffff) + 1) / 2) + 1;
 314                         else
 315                                 return 2;       /* indirect sequential */
 316                 default:
 317                         return 0;
 318                 }
 319         default:
 320                 return 0;
 321         }
 322
 323         return 0;
 324 }
 325
 326 static int validate_cmd(int cmd)
 327 {
 328         int ret = do_validate_cmd(cmd);
 329
 330 /*      printk("validate_cmd( %x ): %d\n", cmd, ret); */
 331
 332         return ret;
 333 }
 334
 335 static int i915_emit_cmds(struct drm_device * dev, int *buffer, int dwords)
 336 {
 337         drm_i915_private_t *dev_priv = dev->dev_private;
 338         int i;
 339
 340         if ((dwords+1) * sizeof(int) >= dev_priv->render_ring.size - 8)
 341                 return -EINVAL;
 342
 343         BEGIN_LP_RING((dwords+1)&~1);
 344
 345         for (i = 0; i < dwords;) {
 346                 int cmd, sz;
 347
 348                 cmd = buffer[i];
 349
 350                 if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords)
 351                         return -EINVAL;
 352
 353                 OUT_RING(cmd);
 354
 355                 while (++i, --sz) {
 356                         OUT_RING(buffer[i]);
 357                 }
 358         }
 359
 360         if (dwords & 1)
 361                 OUT_RING(0);
 362
 363         ADVANCE_LP_RING();
 364
 365         return 0;
 366 }
 367
 368 int
 369 i915_emit_box(struct drm_device *dev,
 370               struct drm_clip_rect *boxes,
 371               int i, int DR1, int DR4)
 372 {
 373         struct drm_clip_rect box = boxes[i];
 374
 375         if (box.y2 <= box.y1 || box.x2 <= box.x1 || box.y2 <= 0 || box.x2 <= 0) {
 376                 DRM_ERROR("Bad box %d,%d..%d,%d\n",
 377                           box.x1, box.y1, box.x2, box.y2);
 378                 return -EINVAL;
 379         }
 380
 381         if (IS_I965G(dev)) {
 382                 BEGIN_LP_RING(4);
 383                 OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
 384                 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
 385                 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
 386                 OUT_RING(DR4);
 387                 ADVANCE_LP_RING();
 388         } else {
 389                 BEGIN_LP_RING(6);
 390                 OUT_RING(GFX_OP_DRAWRECT_INFO);
 391                 OUT_RING(DR1);
 392                 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
 393                 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
 394                 OUT_RING(DR4);
 395                 OUT_RING(0);
 396                 ADVANCE_LP_RING();
 397         }
 398
 399         return 0;
 400 }
 401
 402 /* XXX: Emitting the counter should really be moved to part of the IRQ
 403  * emit. For now, do it in both places:
 404  */
 405
 406 static void i915_emit_breadcrumb(struct drm_device *dev)
 407 {
 408         drm_i915_private_t *dev_priv = dev->dev_private;
 409         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 410
 411         dev_priv->counter++;
 412         if (dev_priv->counter > 0x7FFFFFFFUL)
 413                 dev_priv->counter = 0;
 414         if (master_priv->sarea_priv)
 415                 master_priv->sarea_priv->last_enqueue = dev_priv->counter;
 416
 417         BEGIN_LP_RING(4);
 418         OUT_RING(MI_STORE_DWORD_INDEX);
 419         OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
 420         OUT_RING(dev_priv->counter);
 421         OUT_RING(0);
 422         ADVANCE_LP_RING();
 423 }
 424
 425 static int i915_dispatch_cmdbuffer(struct drm_device * dev,
 426                                    drm_i915_cmdbuffer_t *cmd,
 427                                    struct drm_clip_rect *cliprects,
 428                                    void *cmdbuf)
 429 {
 430         int nbox = cmd->num_cliprects;
 431         int i = 0, count, ret;
 432
 433         if (cmd->sz & 0x3) {
 434                 DRM_ERROR("alignment");
 435                 return -EINVAL;
 436         }
 437
 438         i915_kernel_lost_context(dev);
 439
 440         count = nbox ? nbox : 1;
 441
 442         for (i = 0; i < count; i++) {
 443                 if (i < nbox) {
 444                         ret = i915_emit_box(dev, cliprects, i,
 445                                             cmd->DR1, cmd->DR4);
 446                         if (ret)
 447                                 return ret;
 448                 }
 449
 450                 ret = i915_emit_cmds(dev, cmdbuf, cmd->sz / 4);
 451                 if (ret)
 452                         return ret;
 453         }
 454
 455         i915_emit_breadcrumb(dev);
 456         return 0;
 457 }
 458
 459 static int i915_dispatch_batchbuffer(struct drm_device * dev,
 460                                      drm_i915_batchbuffer_t * batch,
 461                                      struct drm_clip_rect *cliprects)
 462 {
 463         int nbox = batch->num_cliprects;
 464         int i = 0, count;
 465
 466         if ((batch->start | batch->used) & 0x7) {
 467                 DRM_ERROR("alignment");
 468                 return -EINVAL;
 469         }
 470
 471         i915_kernel_lost_context(dev);
 472
 473         count = nbox ? nbox : 1;
 474
 475         for (i = 0; i < count; i++) {
 476                 if (i < nbox) {
 477                         int ret = i915_emit_box(dev, cliprects, i,
 478                                                 batch->DR1, batch->DR4);
 479                         if (ret)
 480                                 return ret;
 481                 }
 482
 483                 if (!IS_I830(dev) && !IS_845G(dev)) {
 484                         BEGIN_LP_RING(2);
 485                         if (IS_I965G(dev)) {
 486                                 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
 487                                 OUT_RING(batch->start);
 488                         } else {
 489                                 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
 490                                 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
 491                         }
 492                         ADVANCE_LP_RING();
 493                 } else {
 494                         BEGIN_LP_RING(4);
 495                         OUT_RING(MI_BATCH_BUFFER);
 496                         OUT_RING(batch->start | MI_BATCH_NON_SECURE);
 497                         OUT_RING(batch->start + batch->used - 4);
 498                         OUT_RING(0);
 499                         ADVANCE_LP_RING();
 500                 }
 501         }
 502
 503
 504         if (IS_G4X(dev) || IS_IRONLAKE(dev)) {
 505                 BEGIN_LP_RING(2);
 506                 OUT_RING(MI_FLUSH | MI_NO_WRITE_FLUSH | MI_INVALIDATE_ISP);
 507                 OUT_RING(MI_NOOP);
 508                 ADVANCE_LP_RING();
 509         }
 510         i915_emit_breadcrumb(dev);
 511
 512         return 0;
 513 }
 514
 515 static int i915_dispatch_flip(struct drm_device * dev)
 516 {
 517         drm_i915_private_t *dev_priv = dev->dev_private;
 518         struct drm_i915_master_private *master_priv =
 519                 dev->primary->master->driver_priv;
 520
 521         if (!master_priv->sarea_priv)
 522                 return -EINVAL;
 523
 524         DRM_DEBUG_DRIVER("%s: page=%d pfCurrentPage=%d\n",
 525                           __func__,
 526                          dev_priv->current_page,
 527                          master_priv->sarea_priv->pf_current_page);
 528
 529         i915_kernel_lost_context(dev);
 530
 531         BEGIN_LP_RING(2);
 532         OUT_RING(MI_FLUSH | MI_READ_FLUSH);
 533         OUT_RING(0);
 534         ADVANCE_LP_RING();
 535
 536         BEGIN_LP_RING(6);
 537         OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
 538         OUT_RING(0);
 539         if (dev_priv->current_page == 0) {
 540                 OUT_RING(dev_priv->back_offset);
 541                 dev_priv->current_page = 1;
 542         } else {
 543                 OUT_RING(dev_priv->front_offset);
 544                 dev_priv->current_page = 0;
 545         }
 546         OUT_RING(0);
 547         ADVANCE_LP_RING();
 548
 549         BEGIN_LP_RING(2);
 550         OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
 551         OUT_RING(0);
 552         ADVANCE_LP_RING();
 553
 554         master_priv->sarea_priv->last_enqueue = dev_priv->counter++;
 555
 556         BEGIN_LP_RING(4);
 557         OUT_RING(MI_STORE_DWORD_INDEX);
 558         OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
 559         OUT_RING(dev_priv->counter);
 560         OUT_RING(0);
 561         ADVANCE_LP_RING();
 562
 563         master_priv->sarea_priv->pf_current_page = dev_priv->current_page;
 564         return 0;
 565 }
 566
 567 static int i915_quiescent(struct drm_device * dev)
 568 {
 569         drm_i915_private_t *dev_priv = dev->dev_private;
 570
 571         i915_kernel_lost_context(dev);
 572         return intel_wait_ring_buffer(dev, &dev_priv->render_ring,
 573                                       dev_priv->render_ring.size - 8);
 574 }
 575
 576 static int i915_flush_ioctl(struct drm_device *dev, void *data,
 577                             struct drm_file *file_priv)
 578 {
 579         int ret;
 580
 581         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 582
 583         mutex_lock(&dev->struct_mutex);
 584         ret = i915_quiescent(dev);
 585         mutex_unlock(&dev->struct_mutex);
 586
 587         return ret;
 588 }
 589
 590 static int i915_batchbuffer(struct drm_device *dev, void *data,
 591                             struct drm_file *file_priv)
 592 {
 593         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 594         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 595         drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
 596             master_priv->sarea_priv;
 597         drm_i915_batchbuffer_t *batch = data;
 598         int ret;
 599         struct drm_clip_rect *cliprects = NULL;
 600
 601         if (!dev_priv->allow_batchbuffer) {
 602                 DRM_ERROR("Batchbuffer ioctl disabled\n");
 603                 return -EINVAL;
 604         }
 605
 606         DRM_DEBUG_DRIVER("i915 batchbuffer, start %x used %d cliprects %d\n",
 607                         batch->start, batch->used, batch->num_cliprects);
 608
 609         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 610
 611         if (batch->num_cliprects < 0)
 612                 return -EINVAL;
 613
 614         if (batch->num_cliprects) {
 615                 cliprects = kcalloc(batch->num_cliprects,
 616                                     sizeof(struct drm_clip_rect),
 617                                     GFP_KERNEL);
 618                 if (cliprects == NULL)
 619                         return -ENOMEM;
 620
 621                 ret = copy_from_user(cliprects, batch->cliprects,
 622                                      batch->num_cliprects *
 623                                      sizeof(struct drm_clip_rect));
 624                 if (ret != 0) {
 625                         ret = -EFAULT;
 626                         goto fail_free;
 627                 }
 628         }
 629
 630         mutex_lock(&dev->struct_mutex);
 631         ret = i915_dispatch_batchbuffer(dev, batch, cliprects);
 632         mutex_unlock(&dev->struct_mutex);
 633
 634         if (sarea_priv)
 635                 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
 636
 637 fail_free:
 638         kfree(cliprects);
 639
 640         return ret;
 641 }
 642
 643 static int i915_cmdbuffer(struct drm_device *dev, void *data,
 644                           struct drm_file *file_priv)
 645 {
 646         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 647         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 648         drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
 649             master_priv->sarea_priv;
 650         drm_i915_cmdbuffer_t *cmdbuf = data;
 651         struct drm_clip_rect *cliprects = NULL;
 652         void *batch_data;
 653         int ret;
 654
 655         DRM_DEBUG_DRIVER("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
 656                         cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
 657
 658         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 659
 660         if (cmdbuf->num_cliprects < 0)
 661                 return -EINVAL;
 662
 663         batch_data = kmalloc(cmdbuf->sz, GFP_KERNEL);
 664         if (batch_data == NULL)
 665                 return -ENOMEM;
 666
 667         ret = copy_from_user(batch_data, cmdbuf->buf, cmdbuf->sz);
 668         if (ret != 0) {
 669                 ret = -EFAULT;
 670                 goto fail_batch_free;
 671         }
 672
 673         if (cmdbuf->num_cliprects) {
 674                 cliprects = kcalloc(cmdbuf->num_cliprects,
 675                                     sizeof(struct drm_clip_rect), GFP_KERNEL);
 676                 if (cliprects == NULL) {
 677                         ret = -ENOMEM;
 678                         goto fail_batch_free;
 679                 }
 680
 681                 ret = copy_from_user(cliprects, cmdbuf->cliprects,
 682                                      cmdbuf->num_cliprects *
 683                                      sizeof(struct drm_clip_rect));
 684                 if (ret != 0) {
 685                         ret = -EFAULT;
 686                         goto fail_clip_free;
 687                 }
 688         }
 689
 690         mutex_lock(&dev->struct_mutex);
 691         ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data);
 692         mutex_unlock(&dev->struct_mutex);
 693         if (ret) {
 694                 DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
 695                 goto fail_clip_free;
 696         }
 697
 698         if (sarea_priv)
 699                 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
 700
 701 fail_clip_free:
 702         kfree(cliprects);
 703 fail_batch_free:
 704         kfree(batch_data);
 705
 706         return ret;
 707 }
 708
 709 static int i915_flip_bufs(struct drm_device *dev, void *data,
 710                           struct drm_file *file_priv)
 711 {
 712         int ret;
 713
 714         DRM_DEBUG_DRIVER("%s\n", __func__);
 715
 716         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 717
 718         mutex_lock(&dev->struct_mutex);
 719         ret = i915_dispatch_flip(dev);
 720         mutex_unlock(&dev->struct_mutex);
 721
 722         return ret;
 723 }
 724
 725 static int i915_getparam(struct drm_device *dev, void *data,
 726                          struct drm_file *file_priv)
 727 {
 728         drm_i915_private_t *dev_priv = dev->dev_private;
 729         drm_i915_getparam_t *param = data;
 730         int value;
 731
 732         if (!dev_priv) {
 733                 DRM_ERROR("called with no initialization\n");
 734                 return -EINVAL;
 735         }
 736
 737         switch (param->param) {
 738         case I915_PARAM_IRQ_ACTIVE:
 739                 value = dev->pdev->irq ? 1 : 0;
 740                 break;
 741         case I915_PARAM_ALLOW_BATCHBUFFER:
 742                 value = dev_priv->allow_batchbuffer ? 1 : 0;
 743                 break;
 744         case I915_PARAM_LAST_DISPATCH:
 745                 value = READ_BREADCRUMB(dev_priv);
 746                 break;
 747         case I915_PARAM_CHIPSET_ID:
 748                 value = dev->pci_device;
 749                 break;
 750         case I915_PARAM_HAS_GEM:
 751                 value = dev_priv->has_gem;
 752                 break;
 753         case I915_PARAM_NUM_FENCES_AVAIL:
 754                 value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
 755                 break;
 756         case I915_PARAM_HAS_OVERLAY:
 757                 value = dev_priv->overlay ? 1 : 0;
 758                 break;
 759         case I915_PARAM_HAS_PAGEFLIPPING:
 760                 value = 1;
 761                 break;
 762         case I915_PARAM_HAS_EXECBUF2:
 763                 /* depends on GEM */
 764                 value = dev_priv->has_gem;
 765                 break;
 766         case I915_PARAM_HAS_BSD:
 767                 value = HAS_BSD(dev);
 768                 break;
 769         default:
 770                 DRM_DEBUG_DRIVER("Unknown parameter %d\n",
 771                                  param->param);
 772                 return -EINVAL;
 773         }
 774
 775         if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
 776                 DRM_ERROR("DRM_COPY_TO_USER failed\n");
 777                 return -EFAULT;
 778         }
 779
 780         return 0;
 781 }
 782
 783 static int i915_setparam(struct drm_device *dev, void *data,
 784                          struct drm_file *file_priv)
 785 {
 786         drm_i915_private_t *dev_priv = dev->dev_private;
 787         drm_i915_setparam_t *param = data;
 788
 789         if (!dev_priv) {
 790                 DRM_ERROR("called with no initialization\n");
 791                 return -EINVAL;
 792         }
 793
 794         switch (param->param) {
 795         case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
 796                 break;
 797         case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
 798                 dev_priv->tex_lru_log_granularity = param->value;
 799                 break;
 800         case I915_SETPARAM_ALLOW_BATCHBUFFER:
 801                 dev_priv->allow_batchbuffer = param->value;
 802                 break;
 803         case I915_SETPARAM_NUM_USED_FENCES:
 804                 if (param->value > dev_priv->num_fence_regs ||
 805                     param->value < 0)
 806                         return -EINVAL;
 807                 /* Userspace can use first N regs */
 808                 dev_priv->fence_reg_start = param->value;
 809                 break;
 810         default:
 811                 DRM_DEBUG_DRIVER("unknown parameter %d\n",
 812                                         param->param);
 813                 return -EINVAL;
 814         }
 815
 816         return 0;
 817 }
 818
 819 static int i915_set_status_page(struct drm_device *dev, void *data,
 820                                 struct drm_file *file_priv)
 821 {
 822         drm_i915_private_t *dev_priv = dev->dev_private;
 823         drm_i915_hws_addr_t *hws = data;
 824         struct intel_ring_buffer *ring = &dev_priv->render_ring;
 825
 826         if (!I915_NEED_GFX_HWS(dev))
 827                 return -EINVAL;
 828
 829         if (!dev_priv) {
 830                 DRM_ERROR("called with no initialization\n");
 831                 return -EINVAL;
 832         }
 833
 834         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 835                 WARN(1, "tried to set status page when mode setting active\n");
 836                 return 0;
 837         }
 838
 839         DRM_DEBUG_DRIVER("set status page addr 0x%08x\n", (u32)hws->addr);
 840
 841         ring->status_page.gfx_addr = hws->addr & (0x1ffff<<12);
 842
 843         dev_priv->hws_map.offset = dev->agp->base + hws->addr;
 844         dev_priv->hws_map.size = 4*1024;
 845         dev_priv->hws_map.type = 0;
 846         dev_priv->hws_map.flags = 0;
 847         dev_priv->hws_map.mtrr = 0;
 848
 849         drm_core_ioremap_wc(&dev_priv->hws_map, dev);
 850         if (dev_priv->hws_map.handle == NULL) {
 851                 i915_dma_cleanup(dev);
 852                 ring->status_page.gfx_addr = 0;
 853                 DRM_ERROR("can not ioremap virtual address for"
 854                                 " G33 hw status page\n");
 855                 return -ENOMEM;
 856         }
 857         ring->status_page.page_addr = dev_priv->hws_map.handle;
 858         memset(ring->status_page.page_addr, 0, PAGE_SIZE);
 859         I915_WRITE(HWS_PGA, ring->status_page.gfx_addr);
 860
 861         DRM_DEBUG_DRIVER("load hws HWS_PGA with gfx mem 0x%x\n",
 862                          ring->status_page.gfx_addr);
 863         DRM_DEBUG_DRIVER("load hws at %p\n",
 864                          ring->status_page.page_addr);
 865         return 0;
 866 }
 867
 868 static int i915_get_bridge_dev(struct drm_device *dev)
 869 {
 870         struct drm_i915_private *dev_priv = dev->dev_private;
 871
 872         dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0));
 873         if (!dev_priv->bridge_dev) {
 874                 DRM_ERROR("bridge device not found\n");
 875                 return -1;
 876         }
 877         return 0;
 878 }
 879
 880 #define MCHBAR_I915 0x44
 881 #define MCHBAR_I965 0x48
 882 #define MCHBAR_SIZE (4*4096)
 883
 884 #define DEVEN_REG 0x54
 885 #define   DEVEN_MCHBAR_EN (1 << 28)
 886
 887 /* Allocate space for the MCH regs if needed, return nonzero on error */
 888 static int
 889 intel_alloc_mchbar_resource(struct drm_device *dev)
 890 {
 891         drm_i915_private_t *dev_priv = dev->dev_private;
 892         int reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
 893         u32 temp_lo, temp_hi = 0;
 894         u64 mchbar_addr;
 895         int ret;
 896
 897         if (IS_I965G(dev))
 898                 pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
 899         pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
 900         mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
 901
 902         /* If ACPI doesn't have it, assume we need to allocate it ourselves */
 903 #ifdef CONFIG_PNP
 904         if (mchbar_addr &&
 905             pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE))
 906                 return 0;
 907 #endif
 908
 909         /* Get some space for it */
 910         dev_priv->mch_res.name = "i915 MCHBAR";
 911         dev_priv->mch_res.flags = IORESOURCE_MEM;
 912         ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus,
 913                                      &dev_priv->mch_res,
 914                                      MCHBAR_SIZE, MCHBAR_SIZE,
 915                                      PCIBIOS_MIN_MEM,
 916                                      0, pcibios_align_resource,
 917                                      dev_priv->bridge_dev);
 918         if (ret) {
 919                 DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret);
 920                 dev_priv->mch_res.start = 0;
 921                 return ret;
 922         }
 923
 924         if (IS_I965G(dev))
 925                 pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
 926                                        upper_32_bits(dev_priv->mch_res.start));
 927
 928         pci_write_config_dword(dev_priv->bridge_dev, reg,
 929                                lower_32_bits(dev_priv->mch_res.start));
 930         return 0;
 931 }
 932
 933 /* Setup MCHBAR if possible, return true if we should disable it again */
 934 static void
 935 intel_setup_mchbar(struct drm_device *dev)
 936 {
 937         drm_i915_private_t *dev_priv = dev->dev_private;
 938         int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
 939         u32 temp;
 940         bool enabled;
 941
 942         dev_priv->mchbar_need_disable = false;
 943
 944         if (IS_I915G(dev) || IS_I915GM(dev)) {
 945                 pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
 946                 enabled = !!(temp & DEVEN_MCHBAR_EN);
 947         } else {
 948                 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
 949                 enabled = temp & 1;
 950         }
 951
 952         /* If it's already enabled, don't have to do anything */
 953         if (enabled)
 954                 return;
 955
 956         if (intel_alloc_mchbar_resource(dev))
 957                 return;
 958
 959         dev_priv->mchbar_need_disable = true;
 960
 961         /* Space is allocated or reserved, so enable it. */
 962         if (IS_I915G(dev) || IS_I915GM(dev)) {
 963                 pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG,
 964                                        temp | DEVEN_MCHBAR_EN);
 965         } else {
 966                 pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
 967                 pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
 968         }
 969 }
 970
 971 static void
 972 intel_teardown_mchbar(struct drm_device *dev)
 973 {
 974         drm_i915_private_t *dev_priv = dev->dev_private;
 975         int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
 976         u32 temp;
 977
 978         if (dev_priv->mchbar_need_disable) {
 979                 if (IS_I915G(dev) || IS_I915GM(dev)) {
 980                         pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
 981                         temp &= ~DEVEN_MCHBAR_EN;
 982                         pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp);
 983                 } else {
 984                         pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
 985                         temp &= ~1;
 986                         pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp);
 987                 }
 988         }
 989
 990         if (dev_priv->mch_res.start)
 991                 release_resource(&dev_priv->mch_res);
 992 }
 993
 994 /**
 995  * i915_probe_agp - get AGP bootup configuration
 996  * @pdev: PCI device
 997  * @aperture_size: returns AGP aperture configured size
 998  * @preallocated_size: returns size of BIOS preallocated AGP space
 999  *
1000  * Since Intel integrated graphics are UMA, the BIOS has to set aside
1001  * some RAM for the framebuffer at early boot.  This code figures out
1002  * how much was set aside so we can use it for our own purposes.
1003  */
1004 static int i915_probe_agp(struct drm_device *dev, uint32_t *aperture_size,
1005                           uint32_t *preallocated_size,
1006                           uint32_t *start)
1007 {
1008         struct drm_i915_private *dev_priv = dev->dev_private;
1009         u16 tmp = 0;
1010         unsigned long overhead;
1011         unsigned long stolen;
1012
1013         /* Get the fb aperture size and "stolen" memory amount. */
1014         pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &tmp);
1015
1016         *aperture_size = 1024 * 1024;
1017         *preallocated_size = 1024 * 1024;
1018
1019         switch (dev->pdev->device) {
1020         case PCI_DEVICE_ID_INTEL_82830_CGC:
1021         case PCI_DEVICE_ID_INTEL_82845G_IG:
1022         case PCI_DEVICE_ID_INTEL_82855GM_IG:
1023         case PCI_DEVICE_ID_INTEL_82865_IG:
1024                 if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M)
1025                         *aperture_size *= 64;
1026                 else
1027                         *aperture_size *= 128;
1028                 break;
1029         default:
1030                 /* 9xx supports large sizes, just look at the length */
1031                 *aperture_size = pci_resource_len(dev->pdev, 2);
1032                 break;
1033         }
1034
1035         /*
1036          * Some of the preallocated space is taken by the GTT
1037          * and popup.  GTT is 1K per MB of aperture size, and popup is 4K.
1038          */
1039         if (IS_G4X(dev) || IS_PINEVIEW(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev))
1040                 overhead = 4096;
1041         else
1042                 overhead = (*aperture_size / 1024) + 4096;
1043
1044         if (IS_GEN6(dev)) {
1045                 /* SNB has memory control reg at 0x50.w */
1046                 pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &tmp);
1047
1048                 switch (tmp & SNB_GMCH_GMS_STOLEN_MASK) {
1049                 case INTEL_855_GMCH_GMS_DISABLED:
1050                         DRM_ERROR("video memory is disabled\n");
1051                         return -1;
1052                 case SNB_GMCH_GMS_STOLEN_32M:
1053                         stolen = 32 * 1024 * 1024;
1054                         break;
1055                 case SNB_GMCH_GMS_STOLEN_64M:
1056                         stolen = 64 * 1024 * 1024;
1057                         break;
1058                 case SNB_GMCH_GMS_STOLEN_96M:
1059                         stolen = 96 * 1024 * 1024;
1060                         break;
1061                 case SNB_GMCH_GMS_STOLEN_128M:
1062                         stolen = 128 * 1024 * 1024;
1063                         break;
1064                 case SNB_GMCH_GMS_STOLEN_160M:
1065                         stolen = 160 * 1024 * 1024;
1066                         break;
1067                 case SNB_GMCH_GMS_STOLEN_192M:
1068                         stolen = 192 * 1024 * 1024;
1069                         break;
1070                 case SNB_GMCH_GMS_STOLEN_224M:
1071                         stolen = 224 * 1024 * 1024;
1072                         break;
1073                 case SNB_GMCH_GMS_STOLEN_256M:
1074                         stolen = 256 * 1024 * 1024;
1075                         break;
1076                 case SNB_GMCH_GMS_STOLEN_288M:
1077                         stolen = 288 * 1024 * 1024;
1078                         break;
1079                 case SNB_GMCH_GMS_STOLEN_320M:
1080                         stolen = 320 * 1024 * 1024;
1081                         break;
1082                 case SNB_GMCH_GMS_STOLEN_352M:
1083                         stolen = 352 * 1024 * 1024;
1084                         break;
1085                 case SNB_GMCH_GMS_STOLEN_384M:
1086                         stolen = 384 * 1024 * 1024;
1087                         break;
1088                 case SNB_GMCH_GMS_STOLEN_416M:
1089                         stolen = 416 * 1024 * 1024;
1090                         break;
1091                 case SNB_GMCH_GMS_STOLEN_448M:
1092                         stolen = 448 * 1024 * 1024;
1093                         break;
1094                 case SNB_GMCH_GMS_STOLEN_480M:
1095                         stolen = 480 * 1024 * 1024;
1096                         break;
1097                 case SNB_GMCH_GMS_STOLEN_512M:
1098                         stolen = 512 * 1024 * 1024;
1099                         break;
1100                 default:
1101                         DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
1102                                   tmp & SNB_GMCH_GMS_STOLEN_MASK);
1103                         return -1;
1104                 }
1105         } else {
1106                 switch (tmp & INTEL_GMCH_GMS_MASK) {
1107                 case INTEL_855_GMCH_GMS_DISABLED:
1108                         DRM_ERROR("video memory is disabled\n");
1109                         return -1;
1110                 case INTEL_855_GMCH_GMS_STOLEN_1M:
1111                         stolen = 1 * 1024 * 1024;
1112                         break;
1113                 case INTEL_855_GMCH_GMS_STOLEN_4M:
1114                         stolen = 4 * 1024 * 1024;
1115                         break;
1116                 case INTEL_855_GMCH_GMS_STOLEN_8M:
1117                         stolen = 8 * 1024 * 1024;
1118                         break;
1119                 case INTEL_855_GMCH_GMS_STOLEN_16M:
1120                         stolen = 16 * 1024 * 1024;
1121                         break;
1122                 case INTEL_855_GMCH_GMS_STOLEN_32M:
1123                         stolen = 32 * 1024 * 1024;
1124                         break;
1125                 case INTEL_915G_GMCH_GMS_STOLEN_48M:
1126                         stolen = 48 * 1024 * 1024;
1127                         break;
1128                 case INTEL_915G_GMCH_GMS_STOLEN_64M:
1129                         stolen = 64 * 1024 * 1024;
1130                         break;
1131                 case INTEL_GMCH_GMS_STOLEN_128M:
1132                         stolen = 128 * 1024 * 1024;
1133                         break;
1134                 case INTEL_GMCH_GMS_STOLEN_256M:
1135                         stolen = 256 * 1024 * 1024;
1136                         break;
1137                 case INTEL_GMCH_GMS_STOLEN_96M:
1138                         stolen = 96 * 1024 * 1024;
1139                         break;
1140                 case INTEL_GMCH_GMS_STOLEN_160M:
1141                         stolen = 160 * 1024 * 1024;
1142                         break;
1143                 case INTEL_GMCH_GMS_STOLEN_224M:
1144                         stolen = 224 * 1024 * 1024;
1145                         break;
1146                 case INTEL_GMCH_GMS_STOLEN_352M:
1147                         stolen = 352 * 1024 * 1024;
1148                         break;
1149                 default:
1150                         DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
1151                                   tmp & INTEL_GMCH_GMS_MASK);
1152                         return -1;
1153                 }
1154         }
1155
1156         *preallocated_size = stolen - overhead;
1157         *start = overhead;
1158
1159         return 0;
1160 }
1161
1162 #define PTE_ADDRESS_MASK                0xfffff000
1163 #define PTE_ADDRESS_MASK_HIGH           0x000000f0 /* i915+ */
1164 #define PTE_MAPPING_TYPE_UNCACHED       (0 << 1)
1165 #define PTE_MAPPING_TYPE_DCACHE         (1 << 1) /* i830 only */
1166 #define PTE_MAPPING_TYPE_CACHED         (3 << 1)
1167 #define PTE_MAPPING_TYPE_MASK           (3 << 1)
1168 #define PTE_VALID                       (1 << 0)
1169
1170 /**
1171  * i915_gtt_to_phys - take a GTT address and turn it into a physical one
1172  * @dev: drm device
1173  * @gtt_addr: address to translate
1174  *
1175  * Some chip functions require allocations from stolen space but need the
1176  * physical address of the memory in question.  We use this routine
1177  * to get a physical address suitable for register programming from a given
1178  * GTT address.
1179  */
1180 static unsigned long i915_gtt_to_phys(struct drm_device *dev,
1181                                       unsigned long gtt_addr)
1182 {
1183         unsigned long *gtt;
1184         unsigned long entry, phys;
1185         int gtt_bar = IS_I9XX(dev) ? 0 : 1;
1186         int gtt_offset, gtt_size;
1187
1188         if (IS_I965G(dev)) {
1189                 if (IS_G4X(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev)) {
1190                         gtt_offset = 2*1024*1024;
1191                         gtt_size = 2*1024*1024;
1192                 } else {
1193                         gtt_offset = 512*1024;
1194                         gtt_size = 512*1024;
1195                 }
1196         } else {
1197                 gtt_bar = 3;
1198                 gtt_offset = 0;
1199                 gtt_size = pci_resource_len(dev->pdev, gtt_bar);
1200         }
1201
1202         gtt = ioremap_wc(pci_resource_start(dev->pdev, gtt_bar) + gtt_offset,
1203                          gtt_size);
1204         if (!gtt) {
1205                 DRM_ERROR("ioremap of GTT failed\n");
1206                 return 0;
1207         }
1208
1209         entry = *(volatile u32 *)(gtt + (gtt_addr / 1024));
1210
1211         DRM_DEBUG_DRIVER("GTT addr: 0x%08lx, PTE: 0x%08lx\n", gtt_addr, entry);
1212
1213         /* Mask out these reserved bits on this hardware. */
1214         if (!IS_I9XX(dev) || IS_I915G(dev) || IS_I915GM(dev) ||
1215             IS_I945G(dev) || IS_I945GM(dev)) {
1216                 entry &= ~PTE_ADDRESS_MASK_HIGH;
1217         }
1218
1219         /* If it's not a mapping type we know, then bail. */
1220         if ((entry & PTE_MAPPING_TYPE_MASK) != PTE_MAPPING_TYPE_UNCACHED &&
1221             (entry & PTE_MAPPING_TYPE_MASK) != PTE_MAPPING_TYPE_CACHED) {
1222                 iounmap(gtt);
1223                 return 0;
1224         }
1225
1226         if (!(entry & PTE_VALID)) {
1227                 DRM_ERROR("bad GTT entry in stolen space\n");
1228                 iounmap(gtt);
1229                 return 0;
1230         }
1231
1232         iounmap(gtt);
1233
1234         phys =(entry & PTE_ADDRESS_MASK) |
1235                 ((uint64_t)(entry & PTE_ADDRESS_MASK_HIGH) << (32 - 4));
1236
1237         DRM_DEBUG_DRIVER("GTT addr: 0x%08lx, phys addr: 0x%08lx\n", gtt_addr, phys);
1238
1239         return phys;
1240 }
1241
1242 static void i915_warn_stolen(struct drm_device *dev)
1243 {
1244         DRM_ERROR("not enough stolen space for compressed buffer, disabling\n");
1245         DRM_ERROR("hint: you may be able to increase stolen memory size in the BIOS to avoid this\n");
1246 }
1247
1248 static void i915_setup_compression(struct drm_device *dev, int size)
1249 {
1250         struct drm_i915_private *dev_priv = dev->dev_private;
1251         struct drm_mm_node *compressed_fb, *uninitialized_var(compressed_llb);
1252         unsigned long cfb_base;
1253         unsigned long ll_base = 0;
1254
1255         /* Leave 1M for line length buffer & misc. */
1256         compressed_fb = drm_mm_search_free(&dev_priv->vram, size, 4096, 0);
1257         if (!compressed_fb) {
1258                 dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
1259                 i915_warn_stolen(dev);
1260                 return;
1261         }
1262
1263         compressed_fb = drm_mm_get_block(compressed_fb, size, 4096);
1264         if (!compressed_fb) {
1265                 i915_warn_stolen(dev);
1266                 dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
1267                 return;
1268         }
1269
1270         cfb_base = i915_gtt_to_phys(dev, compressed_fb->start);
1271         if (!cfb_base) {
1272                 DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
1273                 drm_mm_put_block(compressed_fb);
1274         }
1275
1276         if (!(IS_GM45(dev) || IS_IRONLAKE_M(dev))) {
1277                 compressed_llb = drm_mm_search_free(&dev_priv->vram, 4096,
1278                                                     4096, 0);
1279                 if (!compressed_llb) {
1280                         i915_warn_stolen(dev);
1281                         return;
1282                 }
1283
1284                 compressed_llb = drm_mm_get_block(compressed_llb, 4096, 4096);
1285                 if (!compressed_llb) {
1286                         i915_warn_stolen(dev);
1287                         return;
1288                 }
1289
1290                 ll_base = i915_gtt_to_phys(dev, compressed_llb->start);
1291                 if (!ll_base) {
1292                         DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
1293                         drm_mm_put_block(compressed_fb);
1294                         drm_mm_put_block(compressed_llb);
1295                 }
1296         }
1297
1298         dev_priv->cfb_size = size;
1299
1300         intel_disable_fbc(dev);
1301         dev_priv->compressed_fb = compressed_fb;
1302         if (IS_IRONLAKE_M(dev))
1303                 I915_WRITE(ILK_DPFC_CB_BASE, compressed_fb->start);
1304         else if (IS_GM45(dev)) {
1305                 I915_WRITE(DPFC_CB_BASE, compressed_fb->start);
1306         } else {
1307                 I915_WRITE(FBC_CFB_BASE, cfb_base);
1308                 I915_WRITE(FBC_LL_BASE, ll_base);
1309                 dev_priv->compressed_llb = compressed_llb;
1310         }
1311
1312         DRM_DEBUG_KMS("FBC base 0x%08lx, ll base 0x%08lx, size %dM\n", cfb_base,
1313                   ll_base, size >> 20);
1314 }
1315
1316 static void i915_cleanup_compression(struct drm_device *dev)
1317 {
1318         struct drm_i915_private *dev_priv = dev->dev_private;
1319
1320         drm_mm_put_block(dev_priv->compressed_fb);
1321         if (dev_priv->compressed_llb)
1322                 drm_mm_put_block(dev_priv->compressed_llb);
1323 }
1324
1325 /* true = enable decode, false = disable decoder */
1326 static unsigned int i915_vga_set_decode(void *cookie, bool state)
1327 {
1328         struct drm_device *dev = cookie;
1329
1330         intel_modeset_vga_set_state(dev, state);
1331         if (state)
1332                 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
1333                        VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1334         else
1335                 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1336 }
1337
1338 static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
1339 {
1340         struct drm_device *dev = pci_get_drvdata(pdev);
1341         pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
1342         if (state == VGA_SWITCHEROO_ON) {
1343                 printk(KERN_INFO "i915: switched on\n");
1344                 /* i915 resume handler doesn't set to D0 */
1345                 pci_set_power_state(dev->pdev, PCI_D0);
1346                 i915_resume(dev);
1347                 drm_kms_helper_poll_enable(dev);
1348         } else {
1349                 printk(KERN_ERR "i915: switched off\n");
1350                 drm_kms_helper_poll_disable(dev);
1351                 i915_suspend(dev, pmm);
1352         }
1353 }
1354
1355 static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
1356 {
1357         struct drm_device *dev = pci_get_drvdata(pdev);
1358         bool can_switch;
1359
1360         spin_lock(&dev->count_lock);
1361         can_switch = (dev->open_count == 0);
1362         spin_unlock(&dev->count_lock);
1363         return can_switch;
1364 }
1365
1366 static int i915_load_modeset_init(struct drm_device *dev,
1367                                   unsigned long prealloc_start,
1368                                   unsigned long prealloc_size,
1369                                   unsigned long agp_size)
1370 {
1371         struct drm_i915_private *dev_priv = dev->dev_private;
1372         int fb_bar = IS_I9XX(dev) ? 2 : 0;
1373         int ret = 0;
1374
1375         dev->mode_config.fb_base = pci_resource_start(dev->pdev, fb_bar) &
1376                 0xff000000;
1377
1378         /* Basic memrange allocator for stolen space (aka vram) */
1379         drm_mm_init(&dev_priv->vram, 0, prealloc_size);
1380         DRM_INFO("set up %ldM of stolen space\n", prealloc_size / (1024*1024));
1381
1382         /* We're off and running w/KMS */
1383         dev_priv->mm.suspended = 0;
1384
1385         /* Let GEM Manage from end of prealloc space to end of aperture.
1386          *
1387          * However, leave one page at the end still bound to the scratch page.
1388          * There are a number of places where the hardware apparently
1389          * prefetches past the end of the object, and we've seen multiple
1390          * hangs with the GPU head pointer stuck in a batchbuffer bound
1391          * at the last page of the aperture.  One page should be enough to
1392          * keep any prefetching inside of the aperture.
1393          */
1394         i915_gem_do_init(dev, prealloc_size, agp_size - 4096);
1395
1396         mutex_lock(&dev->struct_mutex);
1397         ret = i915_gem_init_ringbuffer(dev);
1398         mutex_unlock(&dev->struct_mutex);
1399         if (ret)
1400                 goto out;
1401
1402         /* Try to set up FBC with a reasonable compressed buffer size */
1403         if (I915_HAS_FBC(dev) && i915_powersave) {
1404                 int cfb_size;
1405
1406                 /* Try to get an 8M buffer... */
1407                 if (prealloc_size > (9*1024*1024))
1408                         cfb_size = 8*1024*1024;
1409                 else /* fall back to 7/8 of the stolen space */
1410                         cfb_size = prealloc_size * 7 / 8;
1411                 i915_setup_compression(dev, cfb_size);
1412         }
1413
1414         /* Allow hardware batchbuffers unless told otherwise.
1415          */
1416         dev_priv->allow_batchbuffer = 1;
1417
1418         ret = intel_init_bios(dev);
1419         if (ret)
1420                 DRM_INFO("failed to find VBIOS tables\n");
1421
1422         /* If we have > 1 VGA cards, then we need to arbitrate access
1423          * to the common VGA resources.
1424          *
1425          * If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA),
1426          * then we do not take part in VGA arbitration and the
1427          * vga_client_register() fails with -ENODEV.
1428          */
1429         ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode);
1430         if (ret && ret != -ENODEV)
1431                 goto cleanup_ringbuffer;
1432
1433         ret = vga_switcheroo_register_client(dev->pdev,
1434                                              i915_switcheroo_set_state,
1435                                              i915_switcheroo_can_switch);
1436         if (ret)
1437                 goto cleanup_vga_client;
1438
1439         /* IIR "flip pending" bit means done if this bit is set */
1440         if (IS_GEN3(dev) && (I915_READ(ECOSKPD) & ECO_FLIP_DONE))
1441                 dev_priv->flip_pending_is_done = true;
1442
1443         intel_modeset_init(dev);
1444
1445         ret = drm_irq_install(dev);
1446         if (ret)
1447                 goto cleanup_vga_switcheroo;
1448
1449         /* Always safe in the mode setting case. */
1450         /* FIXME: do pre/post-mode set stuff in core KMS code */
1451         dev->vblank_disable_allowed = 1;
1452
1453         /*
1454          * Initialize the hardware status page IRQ location.
1455          */
1456
1457         I915_WRITE(INSTPM, (1 << 5) | (1 << 21));
1458
1459         ret = intel_fbdev_init(dev);
1460         if (ret)
1461                 goto cleanup_irq;
1462
1463         drm_kms_helper_poll_init(dev);
1464         return 0;
1465
1466 cleanup_irq:
1467         drm_irq_uninstall(dev);
1468 cleanup_vga_switcheroo:
1469         vga_switcheroo_unregister_client(dev->pdev);
1470 cleanup_vga_client:
1471         vga_client_register(dev->pdev, NULL, NULL, NULL);
1472 cleanup_ringbuffer:
1473         mutex_lock(&dev->struct_mutex);
1474         i915_gem_cleanup_ringbuffer(dev);
1475         mutex_unlock(&dev->struct_mutex);
1476 out:
1477         return ret;
1478 }
1479
1480 int i915_master_create(struct drm_device *dev, struct drm_master *master)
1481 {
1482         struct drm_i915_master_private *master_priv;
1483
1484         master_priv = kzalloc(sizeof(*master_priv), GFP_KERNEL);
1485         if (!master_priv)
1486                 return -ENOMEM;
1487
1488         master->driver_priv = master_priv;
1489         return 0;
1490 }
1491
1492 void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
1493 {
1494         struct drm_i915_master_private *master_priv = master->driver_priv;
1495
1496         if (!master_priv)
1497                 return;
1498
1499         kfree(master_priv);
1500
1501         master->driver_priv = NULL;
1502 }
1503
1504 static void i915_pineview_get_mem_freq(struct drm_device *dev)
1505 {
1506         drm_i915_private_t *dev_priv = dev->dev_private;
1507         u32 tmp;
1508
1509         tmp = I915_READ(CLKCFG);
1510
1511         switch (tmp & CLKCFG_FSB_MASK) {
1512         case CLKCFG_FSB_533:
1513                 dev_priv->fsb_freq = 533; /* 133*4 */
1514                 break;
1515         case CLKCFG_FSB_800:
1516                 dev_priv->fsb_freq = 800; /* 200*4 */
1517                 break;
1518         case CLKCFG_FSB_667:
1519                 dev_priv->fsb_freq =  667; /* 167*4 */
1520                 break;
1521         case CLKCFG_FSB_400:
1522                 dev_priv->fsb_freq = 400; /* 100*4 */
1523                 break;
1524         }
1525
1526         switch (tmp & CLKCFG_MEM_MASK) {
1527         case CLKCFG_MEM_533:
1528                 dev_priv->mem_freq = 533;
1529                 break;
1530         case CLKCFG_MEM_667:
1531                 dev_priv->mem_freq = 667;
1532                 break;
1533         case CLKCFG_MEM_800:
1534                 dev_priv->mem_freq = 800;
1535                 break;
1536         }
1537
1538         /* detect pineview DDR3 setting */
1539         tmp = I915_READ(CSHRDDR3CTL);
1540         dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0;
1541 }
1542
1543 static void i915_ironlake_get_mem_freq(struct drm_device *dev)
1544 {
1545         drm_i915_private_t *dev_priv = dev->dev_private;
1546         u16 ddrpll, csipll;
1547
1548         ddrpll = I915_READ16(DDRMPLL1);
1549         csipll = I915_READ16(CSIPLL0);
1550
1551         switch (ddrpll & 0xff) {
1552         case 0xc:
1553                 dev_priv->mem_freq = 800;
1554                 break;
1555         case 0x10:
1556                 dev_priv->mem_freq = 1066;
1557                 break;
1558         case 0x14:
1559                 dev_priv->mem_freq = 1333;
1560                 break;
1561         case 0x18:
1562                 dev_priv->mem_freq = 1600;
1563                 break;
1564         default:
1565                 DRM_DEBUG_DRIVER("unknown memory frequency 0x%02x\n",
1566                                  ddrpll & 0xff);
1567                 dev_priv->mem_freq = 0;
1568                 break;
1569         }
1570
1571         dev_priv->r_t = dev_priv->mem_freq;
1572
1573         switch (csipll & 0x3ff) {
1574         case 0x00c:
1575                 dev_priv->fsb_freq = 3200;
1576                 break;
1577         case 0x00e:
1578                 dev_priv->fsb_freq = 3733;
1579                 break;
1580         case 0x010:
1581                 dev_priv->fsb_freq = 4266;
1582                 break;
1583         case 0x012:
1584                 dev_priv->fsb_freq = 4800;
1585                 break;
1586         case 0x014:
1587                 dev_priv->fsb_freq = 5333;
1588                 break;
1589         case 0x016:
1590                 dev_priv->fsb_freq = 5866;
1591                 break;
1592         case 0x018:
1593                 dev_priv->fsb_freq = 6400;
1594                 break;
1595         default:
1596                 DRM_DEBUG_DRIVER("unknown fsb frequency 0x%04x\n",
1597                                  csipll & 0x3ff);
1598                 dev_priv->fsb_freq = 0;
1599                 break;
1600         }
1601
1602         if (dev_priv->fsb_freq == 3200) {
1603                 dev_priv->c_m = 0;
1604         } else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) {
1605                 dev_priv->c_m = 1;
1606         } else {
1607                 dev_priv->c_m = 2;
1608         }
1609 }
1610
1611 struct v_table {
1612         u8 vid;
1613         unsigned long vd; /* in .1 mil */
1614         unsigned long vm; /* in .1 mil */
1615         u8 pvid;
1616 };
1617
1618 static struct v_table v_table[] = {
1619         { 0, 16125, 15000, 0x7f, },
1620         { 1, 16000, 14875, 0x7e, },
1621         { 2, 15875, 14750, 0x7d, },
1622         { 3, 15750, 14625, 0x7c, },
1623         { 4, 15625, 14500, 0x7b, },
1624         { 5, 15500, 14375, 0x7a, },
1625         { 6, 15375, 14250, 0x79, },
1626         { 7, 15250, 14125, 0x78, },
1627         { 8, 15125, 14000, 0x77, },
1628         { 9, 15000, 13875, 0x76, },
1629         { 10, 14875, 13750, 0x75, },
1630         { 11, 14750, 13625, 0x74, },
1631         { 12, 14625, 13500, 0x73, },
1632         { 13, 14500, 13375, 0x72, },
1633         { 14, 14375, 13250, 0x71, },
1634         { 15, 14250, 13125, 0x70, },
1635         { 16, 14125, 13000, 0x6f, },
1636         { 17, 14000, 12875, 0x6e, },
1637         { 18, 13875, 12750, 0x6d, },
1638         { 19, 13750, 12625, 0x6c, },
1639         { 20, 13625, 12500, 0x6b, },
1640         { 21, 13500, 12375, 0x6a, },
1641         { 22, 13375, 12250, 0x69, },
1642         { 23, 13250, 12125, 0x68, },
1643         { 24, 13125, 12000, 0x67, },
1644         { 25, 13000, 11875, 0x66, },
1645         { 26, 12875, 11750, 0x65, },
1646         { 27, 12750, 11625, 0x64, },
1647         { 28, 12625, 11500, 0x63, },
1648         { 29, 12500, 11375, 0x62, },
1649         { 30, 12375, 11250, 0x61, },
1650         { 31, 12250, 11125, 0x60, },
1651         { 32, 12125, 11000, 0x5f, },
1652         { 33, 12000, 10875, 0x5e, },
1653         { 34, 11875, 10750, 0x5d, },
1654         { 35, 11750, 10625, 0x5c, },
1655         { 36, 11625, 10500, 0x5b, },
1656         { 37, 11500, 10375, 0x5a, },
1657         { 38, 11375, 10250, 0x59, },
1658         { 39, 11250, 10125, 0x58, },
1659         { 40, 11125, 10000, 0x57, },
1660         { 41, 11000, 9875, 0x56, },
1661         { 42, 10875, 9750, 0x55, },
1662         { 43, 10750, 9625, 0x54, },
1663         { 44, 10625, 9500, 0x53, },
1664         { 45, 10500, 9375, 0x52, },
1665         { 46, 10375, 9250, 0x51, },
1666         { 47, 10250, 9125, 0x50, },
1667         { 48, 10125, 9000, 0x4f, },
1668         { 49, 10000, 8875, 0x4e, },
1669         { 50, 9875, 8750, 0x4d, },
1670         { 51, 9750, 8625, 0x4c, },
1671         { 52, 9625, 8500, 0x4b, },
1672         { 53, 9500, 8375, 0x4a, },
1673         { 54, 9375, 8250, 0x49, },
1674         { 55, 9250, 8125, 0x48, },
1675         { 56, 9125, 8000, 0x47, },
1676         { 57, 9000, 7875, 0x46, },
1677         { 58, 8875, 7750, 0x45, },
1678         { 59, 8750, 7625, 0x44, },
1679         { 60, 8625, 7500, 0x43, },
1680         { 61, 8500, 7375, 0x42, },
1681         { 62, 8375, 7250, 0x41, },
1682         { 63, 8250, 7125, 0x40, },
1683         { 64, 8125, 7000, 0x3f, },
1684         { 65, 8000, 6875, 0x3e, },
1685         { 66, 7875, 6750, 0x3d, },
1686         { 67, 7750, 6625, 0x3c, },
1687         { 68, 7625, 6500, 0x3b, },
1688         { 69, 7500, 6375, 0x3a, },
1689         { 70, 7375, 6250, 0x39, },
1690         { 71, 7250, 6125, 0x38, },
1691         { 72, 7125, 6000, 0x37, },
1692         { 73, 7000, 5875, 0x36, },
1693         { 74, 6875, 5750, 0x35, },
1694         { 75, 6750, 5625, 0x34, },
1695         { 76, 6625, 5500, 0x33, },
1696         { 77, 6500, 5375, 0x32, },
1697         { 78, 6375, 5250, 0x31, },
1698         { 79, 6250, 5125, 0x30, },
1699         { 80, 6125, 5000, 0x2f, },
1700         { 81, 6000, 4875, 0x2e, },
1701         { 82, 5875, 4750, 0x2d, },
1702         { 83, 5750, 4625, 0x2c, },
1703         { 84, 5625, 4500, 0x2b, },
1704         { 85, 5500, 4375, 0x2a, },
1705         { 86, 5375, 4250, 0x29, },
1706         { 87, 5250, 4125, 0x28, },
1707         { 88, 5125, 4000, 0x27, },
1708         { 89, 5000, 3875, 0x26, },
1709         { 90, 4875, 3750, 0x25, },
1710         { 91, 4750, 3625, 0x24, },
1711         { 92, 4625, 3500, 0x23, },
1712         { 93, 4500, 3375, 0x22, },
1713         { 94, 4375, 3250, 0x21, },
1714         { 95, 4250, 3125, 0x20, },
1715         { 96, 4125, 3000, 0x1f, },
1716         { 97, 4125, 3000, 0x1e, },
1717         { 98, 4125, 3000, 0x1d, },
1718         { 99, 4125, 3000, 0x1c, },
1719         { 100, 4125, 3000, 0x1b, },
1720         { 101, 4125, 3000, 0x1a, },
1721         { 102, 4125, 3000, 0x19, },
1722         { 103, 4125, 3000, 0x18, },
1723         { 104, 4125, 3000, 0x17, },
1724         { 105, 4125, 3000, 0x16, },
1725         { 106, 4125, 3000, 0x15, },
1726         { 107, 4125, 3000, 0x14, },
1727         { 108, 4125, 3000, 0x13, },
1728         { 109, 4125, 3000, 0x12, },
1729         { 110, 4125, 3000, 0x11, },
1730         { 111, 4125, 3000, 0x10, },
1731         { 112, 4125, 3000, 0x0f, },
1732         { 113, 4125, 3000, 0x0e, },
1733         { 114, 4125, 3000, 0x0d, },
1734         { 115, 4125, 3000, 0x0c, },
1735         { 116, 4125, 3000, 0x0b, },
1736         { 117, 4125, 3000, 0x0a, },
1737         { 118, 4125, 3000, 0x09, },
1738         { 119, 4125, 3000, 0x08, },
1739         { 120, 1125, 0, 0x07, },
1740         { 121, 1000, 0, 0x06, },
1741         { 122, 875, 0, 0x05, },
1742         { 123, 750, 0, 0x04, },
1743         { 124, 625, 0, 0x03, },
1744         { 125, 500, 0, 0x02, },
1745         { 126, 375, 0, 0x01, },
1746         { 127, 0, 0, 0x00, },
1747 };
1748
1749 struct cparams {
1750         int i;
1751         int t;
1752         int m;
1753         int c;
1754 };
1755
1756 static struct cparams cparams[] = {
1757         { 1, 1333, 301, 28664 },
1758         { 1, 1066, 294, 24460 },
1759         { 1, 800, 294, 25192 },
1760         { 0, 1333, 276, 27605 },
1761         { 0, 1066, 276, 27605 },
1762         { 0, 800, 231, 23784 },
1763 };
1764
1765 unsigned long i915_chipset_val(struct drm_i915_private *dev_priv)
1766 {
1767         u64 total_count, diff, ret;
1768         u32 count1, count2, count3, m = 0, c = 0;
1769         unsigned long now = jiffies_to_msecs(jiffies), diff1;
1770         int i;
1771
1772         diff1 = now - dev_priv->last_time1;
1773
1774         count1 = I915_READ(DMIEC);
1775         count2 = I915_READ(DDREC);
1776         count3 = I915_READ(CSIEC);
1777
1778         total_count = count1 + count2 + count3;
1779
1780         /* FIXME: handle per-counter overflow */
1781         if (total_count < dev_priv->last_count1) {
1782                 diff = ~0UL - dev_priv->last_count1;
1783                 diff += total_count;
1784         } else {
1785                 diff = total_count - dev_priv->last_count1;
1786         }
1787
1788         for (i = 0; i < ARRAY_SIZE(cparams); i++) {
1789                 if (cparams[i].i == dev_priv->c_m &&
1790                     cparams[i].t == dev_priv->r_t) {
1791                         m = cparams[i].m;
1792                         c = cparams[i].c;
1793                         break;
1794                 }
1795         }
1796
1797         diff = div_u64(diff, diff1);
1798         ret = ((m * diff) + c);
1799         ret = div_u64(ret, 10);
1800
1801         dev_priv->last_count1 = total_count;
1802         dev_priv->last_time1 = now;
1803
1804         return ret;
1805 }
1806
1807 unsigned long i915_mch_val(struct drm_i915_private *dev_priv)
1808 {
1809         unsigned long m, x, b;
1810         u32 tsfs;
1811
1812         tsfs = I915_READ(TSFS);
1813
1814         m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT);
1815         x = I915_READ8(TR1);
1816
1817         b = tsfs & TSFS_INTR_MASK;
1818
1819         return ((m * x) / 127) - b;
1820 }
1821
1822 static unsigned long pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid)
1823 {
1824         unsigned long val = 0;
1825         int i;
1826
1827         for (i = 0; i < ARRAY_SIZE(v_table); i++) {
1828                 if (v_table[i].pvid == pxvid) {
1829                         if (IS_MOBILE(dev_priv->dev))
1830                                 val = v_table[i].vm;
1831                         else
1832                                 val = v_table[i].vd;
1833                 }
1834         }
1835
1836         return val;
1837 }
1838
1839 void i915_update_gfx_val(struct drm_i915_private *dev_priv)
1840 {
1841         struct timespec now, diff1;
1842         u64 diff;
1843         unsigned long diffms;
1844         u32 count;
1845
1846         getrawmonotonic(&now);
1847         diff1 = timespec_sub(now, dev_priv->last_time2);
1848
1849         /* Don't divide by 0 */
1850         diffms = diff1.tv_sec * 1000 + diff1.tv_nsec / 1000000;
1851         if (!diffms)
1852                 return;
1853
1854         count = I915_READ(GFXEC);
1855
1856         if (count < dev_priv->last_count2) {
1857                 diff = ~0UL - dev_priv->last_count2;
1858                 diff += count;
1859         } else {
1860                 diff = count - dev_priv->last_count2;
1861         }
1862
1863         dev_priv->last_count2 = count;
1864         dev_priv->last_time2 = now;
1865
1866         /* More magic constants... */
1867         diff = diff * 1181;
1868         diff = div_u64(diff, diffms * 10);
1869         dev_priv->gfx_power = diff;
1870 }
1871
1872 unsigned long i915_gfx_val(struct drm_i915_private *dev_priv)
1873 {
1874         unsigned long t, corr, state1, corr2, state2;
1875         u32 pxvid, ext_v;
1876
1877         pxvid = I915_READ(PXVFREQ_BASE + (dev_priv->cur_delay * 4));
1878         pxvid = (pxvid >> 24) & 0x7f;
1879         ext_v = pvid_to_extvid(dev_priv, pxvid);
1880
1881         state1 = ext_v;
1882
1883         t = i915_mch_val(dev_priv);
1884
1885         /* Revel in the empirically derived constants */
1886
1887         /* Correction factor in 1/100000 units */
1888         if (t > 80)
1889                 corr = ((t * 2349) + 135940);
1890         else if (t >= 50)
1891                 corr = ((t * 964) + 29317);
1892         else /* < 50 */
1893                 corr = ((t * 301) + 1004);
1894
1895         corr = corr * ((150142 * state1) / 10000 - 78642);
1896         corr /= 100000;
1897         corr2 = (corr * dev_priv->corr);
1898
1899         state2 = (corr2 * state1) / 10000;
1900         state2 /= 100; /* convert to mW */
1901
1902         i915_update_gfx_val(dev_priv);
1903
1904         return dev_priv->gfx_power + state2;
1905 }
1906
1907 /* Global for IPS driver to get at the current i915 device */
1908 static struct drm_i915_private *i915_mch_dev;
1909 /*
1910  * Lock protecting IPS related data structures
1911  *   - i915_mch_dev
1912  *   - dev_priv->max_delay
1913  *   - dev_priv->min_delay
1914  *   - dev_priv->fmax
1915  *   - dev_priv->gpu_busy
1916  */
1917 DEFINE_SPINLOCK(mchdev_lock);
1918
1919 /**
1920  * i915_read_mch_val - return value for IPS use
1921  *
1922  * Calculate and return a value for the IPS driver to use when deciding whether
1923  * we have thermal and power headroom to increase CPU or GPU power budget.
1924  */
1925 unsigned long i915_read_mch_val(void)
1926 {
1927         struct drm_i915_private *dev_priv;
1928         unsigned long chipset_val, graphics_val, ret = 0;
1929
1930         spin_lock(&mchdev_lock);
1931         if (!i915_mch_dev)
1932                 goto out_unlock;
1933         dev_priv = i915_mch_dev;
1934
1935         chipset_val = i915_chipset_val(dev_priv);
1936         graphics_val = i915_gfx_val(dev_priv);
1937
1938         ret = chipset_val + graphics_val;
1939
1940 out_unlock:
1941         spin_unlock(&mchdev_lock);
1942
1943         return ret;
1944 }
1945 EXPORT_SYMBOL_GPL(i915_read_mch_val);
1946
1947 /**
1948  * i915_gpu_raise - raise GPU frequency limit
1949  *
1950  * Raise the limit; IPS indicates we have thermal headroom.
1951  */
1952 bool i915_gpu_raise(void)
1953 {
1954         struct drm_i915_private *dev_priv;
1955         bool ret = true;
1956
1957         spin_lock(&mchdev_lock);
1958         if (!i915_mch_dev) {
1959                 ret = false;
1960                 goto out_unlock;
1961         }
1962         dev_priv = i915_mch_dev;
1963
1964         if (dev_priv->max_delay > dev_priv->fmax)
1965                 dev_priv->max_delay--;
1966
1967 out_unlock:
1968         spin_unlock(&mchdev_lock);
1969
1970         return ret;
1971 }
1972 EXPORT_SYMBOL_GPL(i915_gpu_raise);
1973
1974 /**
1975  * i915_gpu_lower - lower GPU frequency limit
1976  *
1977  * IPS indicates we're close to a thermal limit, so throttle back the GPU
1978  * frequency maximum.
1979  */
1980 bool i915_gpu_lower(void)
1981 {
1982         struct drm_i915_private *dev_priv;
1983         bool ret = true;
1984
1985         spin_lock(&mchdev_lock);
1986         if (!i915_mch_dev) {
1987                 ret = false;
1988                 goto out_unlock;
1989         }
1990         dev_priv = i915_mch_dev;
1991
1992         if (dev_priv->max_delay < dev_priv->min_delay)
1993                 dev_priv->max_delay++;
1994
1995 out_unlock:
1996         spin_unlock(&mchdev_lock);
1997
1998         return ret;
1999 }
2000 EXPORT_SYMBOL_GPL(i915_gpu_lower);
2001
2002 /**
2003  * i915_gpu_busy - indicate GPU business to IPS
2004  *
2005  * Tell the IPS driver whether or not the GPU is busy.
2006  */
2007 bool i915_gpu_busy(void)
2008 {
2009         struct drm_i915_private *dev_priv;
2010         bool ret = false;
2011
2012         spin_lock(&mchdev_lock);
2013         if (!i915_mch_dev)
2014                 goto out_unlock;
2015         dev_priv = i915_mch_dev;
2016
2017         ret = dev_priv->busy;
2018
2019 out_unlock:
2020         spin_unlock(&mchdev_lock);
2021
2022         return ret;
2023 }
2024 EXPORT_SYMBOL_GPL(i915_gpu_busy);
2025
2026 /**
2027  * i915_gpu_turbo_disable - disable graphics turbo
2028  *
2029  * Disable graphics turbo by resetting the max frequency and setting the
2030  * current frequency to the default.
2031  */
2032 bool i915_gpu_turbo_disable(void)
2033 {
2034         struct drm_i915_private *dev_priv;
2035         bool ret = true;
2036
2037         spin_lock(&mchdev_lock);
2038         if (!i915_mch_dev) {
2039                 ret = false;
2040                 goto out_unlock;
2041         }
2042         dev_priv = i915_mch_dev;
2043
2044         dev_priv->max_delay = dev_priv->fstart;
2045
2046         if (!ironlake_set_drps(dev_priv->dev, dev_priv->fstart))
2047                 ret = false;
2048
2049 out_unlock:
2050         spin_unlock(&mchdev_lock);
2051
2052         return ret;
2053 }
2054 EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable);
2055
2056 /**
2057  * Tells the intel_ips driver that the i915 driver is now loaded, if
2058  * IPS got loaded first.
2059  *
2060  * This awkward dance is so that neither module has to depend on the
2061  * other in order for IPS to do the appropriate communication of
2062  * GPU turbo limits to i915.
2063  */
2064 static void
2065 ips_ping_for_i915_load(void)
2066 {
2067         void (*link)(void);
2068
2069         link = symbol_get(ips_link_to_i915_driver);
2070         if (link) {
2071                 link();
2072                 symbol_put(ips_link_to_i915_driver);
2073         }
2074 }
2075
2076 /**
2077  * i915_driver_load - setup chip and create an initial config
2078  * @dev: DRM device
2079  * @flags: startup flags
2080  *
2081  * The driver load routine has to do several things:
2082  *   - drive output discovery via intel_modeset_init()
2083  *   - initialize the memory manager
2084  *   - allocate initial config memory
2085  *   - setup the DRM framebuffer with the allocated memory
2086  */
2087 int i915_driver_load(struct drm_device *dev, unsigned long flags)
2088 {
2089         struct drm_i915_private *dev_priv;
2090         resource_size_t base, size;
2091         int ret = 0, mmio_bar;
2092         uint32_t agp_size, prealloc_size, prealloc_start;
2093         /* i915 has 4 more counters */
2094         dev->counters += 4;
2095         dev->types[6] = _DRM_STAT_IRQ;
2096         dev->types[7] = _DRM_STAT_PRIMARY;
2097         dev->types[8] = _DRM_STAT_SECONDARY;
2098         dev->types[9] = _DRM_STAT_DMA;
2099
2100         dev_priv = kzalloc(sizeof(drm_i915_private_t), GFP_KERNEL);
2101         if (dev_priv == NULL)
2102                 return -ENOMEM;
2103
2104         dev->dev_private = (void *)dev_priv;
2105         dev_priv->dev = dev;
2106         dev_priv->info = (struct intel_device_info *) flags;
2107
2108         /* Add register map (needed for suspend/resume) */
2109         mmio_bar = IS_I9XX(dev) ? 0 : 1;
2110         base = pci_resource_start(dev->pdev, mmio_bar);
2111         size = pci_resource_len(dev->pdev, mmio_bar);
2112
2113         if (i915_get_bridge_dev(dev)) {
2114                 ret = -EIO;
2115                 goto free_priv;
2116         }
2117
2118         /* overlay on gen2 is broken and can't address above 1G */
2119         if (IS_GEN2(dev))
2120                 dma_set_coherent_mask(&dev->pdev->dev, DMA_BIT_MASK(30));
2121
2122         dev_priv->regs = ioremap(base, size);
2123         if (!dev_priv->regs) {
2124                 DRM_ERROR("failed to map registers\n");
2125                 ret = -EIO;
2126                 goto put_bridge;
2127         }
2128
2129         dev_priv->mm.gtt_mapping =
2130                 io_mapping_create_wc(dev->agp->base,
2131                                      dev->agp->agp_info.aper_size * 1024*1024);
2132         if (dev_priv->mm.gtt_mapping == NULL) {
2133                 ret = -EIO;
2134                 goto out_rmmap;
2135         }
2136
2137         /* Set up a WC MTRR for non-PAT systems.  This is more common than
2138          * one would think, because the kernel disables PAT on first
2139          * generation Core chips because WC PAT gets overridden by a UC
2140          * MTRR if present.  Even if a UC MTRR isn't present.
2141          */
2142         dev_priv->mm.gtt_mtrr = mtrr_add(dev->agp->base,
2143                                          dev->agp->agp_info.aper_size *
2144                                          1024 * 1024,
2145                                          MTRR_TYPE_WRCOMB, 1);
2146         if (dev_priv->mm.gtt_mtrr < 0) {
2147                 DRM_INFO("MTRR allocation failed.  Graphics "
2148                          "performance may suffer.\n");
2149         }
2150
2151         ret = i915_probe_agp(dev, &agp_size, &prealloc_size, &prealloc_start);
2152         if (ret)
2153                 goto out_iomapfree;
2154
2155         if (prealloc_size > intel_max_stolen) {
2156                 DRM_INFO("detected %dM stolen memory, trimming to %dM\n",
2157                          prealloc_size >> 20, intel_max_stolen >> 20);
2158                 prealloc_size = intel_max_stolen;
2159         }
2160
2161         dev_priv->wq = create_singlethread_workqueue("i915");
2162         if (dev_priv->wq == NULL) {
2163                 DRM_ERROR("Failed to create our workqueue.\n");
2164                 ret = -ENOMEM;
2165                 goto out_iomapfree;
2166         }
2167
2168         /* enable GEM by default */
2169         dev_priv->has_gem = 1;
2170
2171         if (prealloc_size > agp_size * 3 / 4) {
2172                 DRM_ERROR("Detected broken video BIOS with %d/%dkB of video "
2173                           "memory stolen.\n",
2174                           prealloc_size / 1024, agp_size / 1024);
2175                 DRM_ERROR("Disabling GEM. (try reducing stolen memory or "
2176                           "updating the BIOS to fix).\n");
2177                 dev_priv->has_gem = 0;
2178         }
2179
2180         if (dev_priv->has_gem == 0 &&
2181             drm_core_check_feature(dev, DRIVER_MODESET)) {
2182                 DRM_ERROR("kernel modesetting requires GEM, disabling driver.\n");
2183                 ret = -ENODEV;
2184                 goto out_iomapfree;
2185         }
2186
2187         dev->driver->get_vblank_counter = i915_get_vblank_counter;
2188         dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
2189         if (IS_G4X(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev)) {
2190                 dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
2191                 dev->driver->get_vblank_counter = gm45_get_vblank_counter;
2192         }
2193
2194         /* Try to make sure MCHBAR is enabled before poking at it */
2195         intel_setup_mchbar(dev);
2196
2197         i915_gem_load(dev);
2198
2199         /* Init HWS */
2200         if (!I915_NEED_GFX_HWS(dev)) {
2201                 ret = i915_init_phys_hws(dev);
2202                 if (ret != 0)
2203                         goto out_workqueue_free;
2204         }
2205
2206         if (IS_PINEVIEW(dev))
2207                 i915_pineview_get_mem_freq(dev);
2208         else if (IS_IRONLAKE(dev))
2209                 i915_ironlake_get_mem_freq(dev);
2210
2211         /* On the 945G/GM, the chipset reports the MSI capability on the
2212          * integrated graphics even though the support isn't actually there
2213          * according to the published specs.  It doesn't appear to function
2214          * correctly in testing on 945G.
2215          * This may be a side effect of MSI having been made available for PEG
2216          * and the registers being closely associated.
2217          *
2218          * According to chipset errata, on the 965GM, MSI interrupts may
2219          * be lost or delayed, but we use them anyways to avoid
2220          * stuck interrupts on some machines.
2221          */
2222         if (!IS_I945G(dev) && !IS_I945GM(dev))
2223                 pci_enable_msi(dev->pdev);
2224
2225         spin_lock_init(&dev_priv->user_irq_lock);
2226         spin_lock_init(&dev_priv->error_lock);
2227         dev_priv->trace_irq_seqno = 0;
2228
2229         ret = drm_vblank_init(dev, I915_NUM_PIPE);
2230
2231         if (ret) {
2232                 (void) i915_driver_unload(dev);
2233                 return ret;
2234         }
2235
2236         /* Start out suspended */
2237         dev_priv->mm.suspended = 1;
2238
2239         intel_detect_pch(dev);
2240
2241         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
2242                 ret = i915_load_modeset_init(dev, prealloc_start,
2243                                              prealloc_size, agp_size);
2244                 if (ret < 0) {
2245                         DRM_ERROR("failed to init modeset\n");
2246                         goto out_workqueue_free;
2247                 }
2248         }
2249
2250         /* Must be done after probing outputs */
2251         intel_opregion_init(dev, 0);
2252
2253         setup_timer(&dev_priv->hangcheck_timer, i915_hangcheck_elapsed,
2254                     (unsigned long) dev);
2255
2256         spin_lock(&mchdev_lock);
2257         i915_mch_dev = dev_priv;
2258         dev_priv->mchdev_lock = &mchdev_lock;
2259         spin_unlock(&mchdev_lock);
2260
2261         /* XXX Prevent module unload due to memory corruption bugs. */
2262         __module_get(THIS_MODULE);
2263
2264         ips_ping_for_i915_load();
2265
2266         return 0;
2267
2268 out_workqueue_free:
2269         destroy_workqueue(dev_priv->wq);
2270 out_iomapfree:
2271         io_mapping_free(dev_priv->mm.gtt_mapping);
2272 out_rmmap:
2273         iounmap(dev_priv->regs);
2274 put_bridge:
2275         pci_dev_put(dev_priv->bridge_dev);
2276 free_priv:
2277         kfree(dev_priv);
2278         return ret;
2279 }
2280
2281 int i915_driver_unload(struct drm_device *dev)
2282 {
2283         struct drm_i915_private *dev_priv = dev->dev_private;
2284
2285         i915_destroy_error_state(dev);
2286
2287         spin_lock(&mchdev_lock);
2288         i915_mch_dev = NULL;
2289         spin_unlock(&mchdev_lock);
2290
2291         destroy_workqueue(dev_priv->wq);
2292         del_timer_sync(&dev_priv->hangcheck_timer);
2293
2294         io_mapping_free(dev_priv->mm.gtt_mapping);
2295         if (dev_priv->mm.gtt_mtrr >= 0) {
2296                 mtrr_del(dev_priv->mm.gtt_mtrr, dev->agp->base,
2297                          dev->agp->agp_info.aper_size * 1024 * 1024);
2298                 dev_priv->mm.gtt_mtrr = -1;
2299         }
2300
2301         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
2302                 intel_modeset_cleanup(dev);
2303
2304                 /*
2305                  * free the memory space allocated for the child device
2306                  * config parsed from VBT
2307                  */
2308                 if (dev_priv->child_dev && dev_priv->child_dev_num) {
2309                         kfree(dev_priv->child_dev);
2310                         dev_priv->child_dev = NULL;
2311                         dev_priv->child_dev_num = 0;
2312                 }
2313                 drm_irq_uninstall(dev);
2314                 vga_switcheroo_unregister_client(dev->pdev);
2315                 vga_client_register(dev->pdev, NULL, NULL, NULL);
2316         }
2317
2318         if (dev->pdev->msi_enabled)
2319                 pci_disable_msi(dev->pdev);
2320
2321         if (dev_priv->regs != NULL)
2322                 iounmap(dev_priv->regs);
2323
2324         intel_opregion_free(dev, 0);
2325
2326         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
2327                 i915_gem_free_all_phys_object(dev);
2328
2329                 mutex_lock(&dev->struct_mutex);
2330                 i915_gem_cleanup_ringbuffer(dev);
2331                 mutex_unlock(&dev->struct_mutex);
2332                 if (I915_HAS_FBC(dev) && i915_powersave)
2333                         i915_cleanup_compression(dev);
2334                 drm_mm_takedown(&dev_priv->vram);
2335                 i915_gem_lastclose(dev);
2336
2337                 intel_cleanup_overlay(dev);
2338
2339                 if (!I915_NEED_GFX_HWS(dev))
2340                         i915_free_hws(dev);
2341         }
2342
2343         intel_teardown_mchbar(dev);
2344
2345         pci_dev_put(dev_priv->bridge_dev);
2346         kfree(dev->dev_private);
2347
2348         return 0;
2349 }
2350
2351 int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv)
2352 {
2353         struct drm_i915_file_private *i915_file_priv;
2354
2355         DRM_DEBUG_DRIVER("\n");
2356         i915_file_priv = (struct drm_i915_file_private *)
2357             kmalloc(sizeof(*i915_file_priv), GFP_KERNEL);
2358
2359         if (!i915_file_priv)
2360                 return -ENOMEM;
2361
2362         file_priv->driver_priv = i915_file_priv;
2363
2364         INIT_LIST_HEAD(&i915_file_priv->mm.request_list);
2365
2366         return 0;
2367 }
2368
2369 /**
2370  * i915_driver_lastclose - clean up after all DRM clients have exited
2371  * @dev: DRM device
2372  *
2373  * Take care of cleaning up after all DRM clients have exited.  In the
2374  * mode setting case, we want to restore the kernel's initial mode (just
2375  * in case the last client left us in a bad state).
2376  *
2377  * Additionally, in the non-mode setting case, we'll tear down the AGP
2378  * and DMA structures, since the kernel won't be using them, and clea
2379  * up any GEM state.
2380  */
2381 void i915_driver_lastclose(struct drm_device * dev)
2382 {
2383         drm_i915_private_t *dev_priv = dev->dev_private;
2384
2385         if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) {
2386                 drm_fb_helper_restore();
2387                 vga_switcheroo_process_delayed_switch();
2388                 return;
2389         }
2390
2391         i915_gem_lastclose(dev);
2392
2393         if (dev_priv->agp_heap)
2394                 i915_mem_takedown(&(dev_priv->agp_heap));
2395
2396         i915_dma_cleanup(dev);
2397 }
2398
2399 void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
2400 {
2401         drm_i915_private_t *dev_priv = dev->dev_private;
2402         i915_gem_release(dev, file_priv);
2403         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2404                 i915_mem_release(dev, file_priv, dev_priv->agp_heap);
2405 }
2406
2407 void i915_driver_postclose(struct drm_device *dev, struct drm_file *file_priv)
2408 {
2409         struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv;
2410
2411         kfree(i915_file_priv);
2412 }
2413
2414 struct drm_ioctl_desc i915_ioctls[] = {
2415         DRM_IOCTL_DEF_DRV(I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2416         DRM_IOCTL_DEF_DRV(I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
2417         DRM_IOCTL_DEF_DRV(I915_FLIP, i915_flip_bufs, DRM_AUTH),
2418         DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
2419         DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
2420         DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
2421         DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam, DRM_AUTH),
2422         DRM_IOCTL_DEF_DRV(I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2423         DRM_IOCTL_DEF_DRV(I915_ALLOC, i915_mem_alloc, DRM_AUTH),
2424         DRM_IOCTL_DEF_DRV(I915_FREE, i915_mem_free, DRM_AUTH),
2425         DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2426         DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
2427         DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP,  i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2428         DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE,  i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2429         DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE,  i915_vblank_pipe_get, DRM_AUTH),
2430         DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
2431         DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
2432         DRM_IOCTL_DEF_DRV(I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
2433         DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH|DRM_UNLOCKED),
2434         DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_UNLOCKED),
2435         DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
2436         DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
2437         DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED),
2438         DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_UNLOCKED),
2439         DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
2440         DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
2441         DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_UNLOCKED),
2442         DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_UNLOCKED),
2443         DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_UNLOCKED),
2444         DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_UNLOCKED),
2445         DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_UNLOCKED),
2446         DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_UNLOCKED),
2447         DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_UNLOCKED),
2448         DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling, DRM_UNLOCKED),
2449         DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling, DRM_UNLOCKED),
2450         DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_UNLOCKED),
2451         DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, DRM_UNLOCKED),
2452         DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_UNLOCKED),
2453         DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
2454         DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
2455 };
2456
2457 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
2458
2459 /**
2460  * Determine if the device really is AGP or not.
2461  *
2462  * All Intel graphics chipsets are treated as AGP, even if they are really
2463  * PCI-e.
2464  *
2465  * \param dev   The device to be tested.
2466  *
2467  * \returns
2468  * A value of 1 is always retured to indictate every i9x5 is AGP.
2469  */
2470 int i915_driver_device_is_agp(struct drm_device * dev)
2471 {
2472         return 1;
2473 }