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   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 "intel_drv.h"
  33 #include "i915_drm.h"
  34 #include "i915_drv.h"
  35
  36 /* Really want an OS-independent resettable timer.  Would like to have
  37  * this loop run for (eg) 3 sec, but have the timer reset every time
  38  * the head pointer changes, so that EBUSY only happens if the ring
  39  * actually stalls for (eg) 3 seconds.
  40  */
  41 int i915_wait_ring(struct drm_device * dev, int n, const char *caller)
  42 {
  43         drm_i915_private_t *dev_priv = dev->dev_private;
  44         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
  45         drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
  46         u32 acthd_reg = IS_I965G(dev) ? ACTHD_I965 : ACTHD;
  47         u32 last_acthd = I915_READ(acthd_reg);
  48         u32 acthd;
  49         u32 last_head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
  50         int i;
  51
  52         for (i = 0; i < 100000; i++) {
  53                 ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
  54                 acthd = I915_READ(acthd_reg);
  55                 ring->space = ring->head - (ring->tail + 8);
  56                 if (ring->space < 0)
  57                         ring->space += ring->Size;
  58                 if (ring->space >= n)
  59                         return 0;
  60
  61                 if (master_priv->sarea_priv)
  62                         master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT;
  63
  64                 if (ring->head != last_head)
  65                         i = 0;
  66                 if (acthd != last_acthd)
  67                         i = 0;
  68
  69                 last_head = ring->head;
  70                 last_acthd = acthd;
  71                 msleep_interruptible(10);
  72
  73         }
  74
  75         return -EBUSY;
  76 }
  77
  78 /**
  79  * Sets up the hardware status page for devices that need a physical address
  80  * in the register.
  81  */
  82 static int i915_init_phys_hws(struct drm_device *dev)
  83 {
  84         drm_i915_private_t *dev_priv = dev->dev_private;
  85         /* Program Hardware Status Page */
  86         dev_priv->status_page_dmah =
  87                 drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff);
  88
  89         if (!dev_priv->status_page_dmah) {
  90                 DRM_ERROR("Can not allocate hardware status page\n");
  91                 return -ENOMEM;
  92         }
  93         dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr;
  94         dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
  95
  96         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
  97
  98         I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
  99         DRM_DEBUG("Enabled hardware status page\n");
 100         return 0;
 101 }
 102
 103 /**
 104  * Frees the hardware status page, whether it's a physical address or a virtual
 105  * address set up by the X Server.
 106  */
 107 static void i915_free_hws(struct drm_device *dev)
 108 {
 109         drm_i915_private_t *dev_priv = dev->dev_private;
 110         if (dev_priv->status_page_dmah) {
 111                 drm_pci_free(dev, dev_priv->status_page_dmah);
 112                 dev_priv->status_page_dmah = NULL;
 113         }
 114
 115         if (dev_priv->status_gfx_addr) {
 116                 dev_priv->status_gfx_addr = 0;
 117                 drm_core_ioremapfree(&dev_priv->hws_map, dev);
 118         }
 119
 120         /* Need to rewrite hardware status page */
 121         I915_WRITE(HWS_PGA, 0x1ffff000);
 122 }
 123
 124 void i915_kernel_lost_context(struct drm_device * dev)
 125 {
 126         drm_i915_private_t *dev_priv = dev->dev_private;
 127         struct drm_i915_master_private *master_priv;
 128         drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
 129
 130         /*
 131          * We should never lose context on the ring with modesetting
 132          * as we don't expose it to userspace
 133          */
 134         if (drm_core_check_feature(dev, DRIVER_MODESET))
 135                 return;
 136
 137         ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 138         ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 139         ring->space = ring->head - (ring->tail + 8);
 140         if (ring->space < 0)
 141                 ring->space += ring->Size;
 142
 143         if (!dev->primary->master)
 144                 return;
 145
 146         master_priv = dev->primary->master->driver_priv;
 147         if (ring->head == ring->tail && master_priv->sarea_priv)
 148                 master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
 149 }
 150
 151 static int i915_dma_cleanup(struct drm_device * dev)
 152 {
 153         drm_i915_private_t *dev_priv = dev->dev_private;
 154         /* Make sure interrupts are disabled here because the uninstall ioctl
 155          * may not have been called from userspace and after dev_private
 156          * is freed, it's too late.
 157          */
 158         if (dev->irq_enabled)
 159                 drm_irq_uninstall(dev);
 160
 161         if (dev_priv->ring.virtual_start) {
 162                 drm_core_ioremapfree(&dev_priv->ring.map, dev);
 163                 dev_priv->ring.virtual_start = NULL;
 164                 dev_priv->ring.map.handle = NULL;
 165                 dev_priv->ring.map.size = 0;
 166         }
 167
 168         /* Clear the HWS virtual address at teardown */
 169         if (I915_NEED_GFX_HWS(dev))
 170                 i915_free_hws(dev);
 171
 172         return 0;
 173 }
 174
 175 static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
 176 {
 177         drm_i915_private_t *dev_priv = dev->dev_private;
 178         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 179
 180         if (init->ring_size != 0) {
 181                 if (dev_priv->ring.ring_obj != NULL) {
 182                         i915_dma_cleanup(dev);
 183                         DRM_ERROR("Client tried to initialize ringbuffer in "
 184                                   "GEM mode\n");
 185                         return -EINVAL;
 186                 }
 187
 188                 dev_priv->ring.Size = init->ring_size;
 189                 dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
 190
 191                 dev_priv->ring.map.offset = init->ring_start;
 192                 dev_priv->ring.map.size = init->ring_size;
 193                 dev_priv->ring.map.type = 0;
 194                 dev_priv->ring.map.flags = 0;
 195                 dev_priv->ring.map.mtrr = 0;
 196
 197                 drm_core_ioremap(&dev_priv->ring.map, dev);
 198
 199                 if (dev_priv->ring.map.handle == NULL) {
 200                         i915_dma_cleanup(dev);
 201                         DRM_ERROR("can not ioremap virtual address for"
 202                                   " ring buffer\n");
 203                         return -ENOMEM;
 204                 }
 205         }
 206
 207         dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
 208
 209         dev_priv->cpp = init->cpp;
 210         dev_priv->back_offset = init->back_offset;
 211         dev_priv->front_offset = init->front_offset;
 212         dev_priv->current_page = 0;
 213         if (master_priv->sarea_priv)
 214                 master_priv->sarea_priv->pf_current_page = 0;
 215
 216         /* Allow hardware batchbuffers unless told otherwise.
 217          */
 218         dev_priv->allow_batchbuffer = 1;
 219
 220         return 0;
 221 }
 222
 223 static int i915_dma_resume(struct drm_device * dev)
 224 {
 225         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 226
 227         DRM_DEBUG("%s\n", __func__);
 228
 229         if (dev_priv->ring.map.handle == NULL) {
 230                 DRM_ERROR("can not ioremap virtual address for"
 231                           " ring buffer\n");
 232                 return -ENOMEM;
 233         }
 234
 235         /* Program Hardware Status Page */
 236         if (!dev_priv->hw_status_page) {
 237                 DRM_ERROR("Can not find hardware status page\n");
 238                 return -EINVAL;
 239         }
 240         DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
 241
 242         if (dev_priv->status_gfx_addr != 0)
 243                 I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
 244         else
 245                 I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
 246         DRM_DEBUG("Enabled hardware status page\n");
 247
 248         return 0;
 249 }
 250
 251 static int i915_dma_init(struct drm_device *dev, void *data,
 252                          struct drm_file *file_priv)
 253 {
 254         drm_i915_init_t *init = data;
 255         int retcode = 0;
 256
 257         switch (init->func) {
 258         case I915_INIT_DMA:
 259                 retcode = i915_initialize(dev, init);
 260                 break;
 261         case I915_CLEANUP_DMA:
 262                 retcode = i915_dma_cleanup(dev);
 263                 break;
 264         case I915_RESUME_DMA:
 265                 retcode = i915_dma_resume(dev);
 266                 break;
 267         default:
 268                 retcode = -EINVAL;
 269                 break;
 270         }
 271
 272         return retcode;
 273 }
 274
 275 /* Implement basically the same security restrictions as hardware does
 276  * for MI_BATCH_NON_SECURE.  These can be made stricter at any time.
 277  *
 278  * Most of the calculations below involve calculating the size of a
 279  * particular instruction.  It's important to get the size right as
 280  * that tells us where the next instruction to check is.  Any illegal
 281  * instruction detected will be given a size of zero, which is a
 282  * signal to abort the rest of the buffer.
 283  */
 284 static int do_validate_cmd(int cmd)
 285 {
 286         switch (((cmd >> 29) & 0x7)) {
 287         case 0x0:
 288                 switch ((cmd >> 23) & 0x3f) {
 289                 case 0x0:
 290                         return 1;       /* MI_NOOP */
 291                 case 0x4:
 292                         return 1;       /* MI_FLUSH */
 293                 default:
 294                         return 0;       /* disallow everything else */
 295                 }
 296                 break;
 297         case 0x1:
 298                 return 0;       /* reserved */
 299         case 0x2:
 300                 return (cmd & 0xff) + 2;        /* 2d commands */
 301         case 0x3:
 302                 if (((cmd >> 24) & 0x1f) <= 0x18)
 303                         return 1;
 304
 305                 switch ((cmd >> 24) & 0x1f) {
 306                 case 0x1c:
 307                         return 1;
 308                 case 0x1d:
 309                         switch ((cmd >> 16) & 0xff) {
 310                         case 0x3:
 311                                 return (cmd & 0x1f) + 2;
 312                         case 0x4:
 313                                 return (cmd & 0xf) + 2;
 314                         default:
 315                                 return (cmd & 0xffff) + 2;
 316                         }
 317                 case 0x1e:
 318                         if (cmd & (1 << 23))
 319                                 return (cmd & 0xffff) + 1;
 320                         else
 321                                 return 1;
 322                 case 0x1f:
 323                         if ((cmd & (1 << 23)) == 0)     /* inline vertices */
 324                                 return (cmd & 0x1ffff) + 2;
 325                         else if (cmd & (1 << 17))       /* indirect random */
 326                                 if ((cmd & 0xffff) == 0)
 327                                         return 0;       /* unknown length, too hard */
 328                                 else
 329                                         return (((cmd & 0xffff) + 1) / 2) + 1;
 330                         else
 331                                 return 2;       /* indirect sequential */
 332                 default:
 333                         return 0;
 334                 }
 335         default:
 336                 return 0;
 337         }
 338
 339         return 0;
 340 }
 341
 342 static int validate_cmd(int cmd)
 343 {
 344         int ret = do_validate_cmd(cmd);
 345
 346 /*      printk("validate_cmd( %x ): %d\n", cmd, ret); */
 347
 348         return ret;
 349 }
 350
 351 static int i915_emit_cmds(struct drm_device * dev, int __user * buffer, int dwords)
 352 {
 353         drm_i915_private_t *dev_priv = dev->dev_private;
 354         int i;
 355         RING_LOCALS;
 356
 357         if ((dwords+1) * sizeof(int) >= dev_priv->ring.Size - 8)
 358                 return -EINVAL;
 359
 360         BEGIN_LP_RING((dwords+1)&~1);
 361
 362         for (i = 0; i < dwords;) {
 363                 int cmd, sz;
 364
 365                 if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i], sizeof(cmd)))
 366                         return -EINVAL;
 367
 368                 if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords)
 369                         return -EINVAL;
 370
 371                 OUT_RING(cmd);
 372
 373                 while (++i, --sz) {
 374                         if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i],
 375                                                          sizeof(cmd))) {
 376                                 return -EINVAL;
 377                         }
 378                         OUT_RING(cmd);
 379                 }
 380         }
 381
 382         if (dwords & 1)
 383                 OUT_RING(0);
 384
 385         ADVANCE_LP_RING();
 386
 387         return 0;
 388 }
 389
 390 int
 391 i915_emit_box(struct drm_device *dev,
 392               struct drm_clip_rect __user *boxes,
 393               int i, int DR1, int DR4)
 394 {
 395         drm_i915_private_t *dev_priv = dev->dev_private;
 396         struct drm_clip_rect box;
 397         RING_LOCALS;
 398
 399         if (DRM_COPY_FROM_USER_UNCHECKED(&box, &boxes[i], sizeof(box))) {
 400                 return -EFAULT;
 401         }
 402
 403         if (box.y2 <= box.y1 || box.x2 <= box.x1 || box.y2 <= 0 || box.x2 <= 0) {
 404                 DRM_ERROR("Bad box %d,%d..%d,%d\n",
 405                           box.x1, box.y1, box.x2, box.y2);
 406                 return -EINVAL;
 407         }
 408
 409         if (IS_I965G(dev)) {
 410                 BEGIN_LP_RING(4);
 411                 OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
 412                 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
 413                 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
 414                 OUT_RING(DR4);
 415                 ADVANCE_LP_RING();
 416         } else {
 417                 BEGIN_LP_RING(6);
 418                 OUT_RING(GFX_OP_DRAWRECT_INFO);
 419                 OUT_RING(DR1);
 420                 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
 421                 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
 422                 OUT_RING(DR4);
 423                 OUT_RING(0);
 424                 ADVANCE_LP_RING();
 425         }
 426
 427         return 0;
 428 }
 429
 430 /* XXX: Emitting the counter should really be moved to part of the IRQ
 431  * emit. For now, do it in both places:
 432  */
 433
 434 static void i915_emit_breadcrumb(struct drm_device *dev)
 435 {
 436         drm_i915_private_t *dev_priv = dev->dev_private;
 437         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 438         RING_LOCALS;
 439
 440         dev_priv->counter++;
 441         if (dev_priv->counter > 0x7FFFFFFFUL)
 442                 dev_priv->counter = 0;
 443         if (master_priv->sarea_priv)
 444                 master_priv->sarea_priv->last_enqueue = dev_priv->counter;
 445
 446         BEGIN_LP_RING(4);
 447         OUT_RING(MI_STORE_DWORD_INDEX);
 448         OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
 449         OUT_RING(dev_priv->counter);
 450         OUT_RING(0);
 451         ADVANCE_LP_RING();
 452 }
 453
 454 static int i915_dispatch_cmdbuffer(struct drm_device * dev,
 455                                    drm_i915_cmdbuffer_t * cmd)
 456 {
 457         int nbox = cmd->num_cliprects;
 458         int i = 0, count, ret;
 459
 460         if (cmd->sz & 0x3) {
 461                 DRM_ERROR("alignment");
 462                 return -EINVAL;
 463         }
 464
 465         i915_kernel_lost_context(dev);
 466
 467         count = nbox ? nbox : 1;
 468
 469         for (i = 0; i < count; i++) {
 470                 if (i < nbox) {
 471                         ret = i915_emit_box(dev, cmd->cliprects, i,
 472                                             cmd->DR1, cmd->DR4);
 473                         if (ret)
 474                                 return ret;
 475                 }
 476
 477                 ret = i915_emit_cmds(dev, (int __user *)cmd->buf, cmd->sz / 4);
 478                 if (ret)
 479                         return ret;
 480         }
 481
 482         i915_emit_breadcrumb(dev);
 483         return 0;
 484 }
 485
 486 static int i915_dispatch_batchbuffer(struct drm_device * dev,
 487                                      drm_i915_batchbuffer_t * batch)
 488 {
 489         drm_i915_private_t *dev_priv = dev->dev_private;
 490         struct drm_clip_rect __user *boxes = batch->cliprects;
 491         int nbox = batch->num_cliprects;
 492         int i = 0, count;
 493         RING_LOCALS;
 494
 495         if ((batch->start | batch->used) & 0x7) {
 496                 DRM_ERROR("alignment");
 497                 return -EINVAL;
 498         }
 499
 500         i915_kernel_lost_context(dev);
 501
 502         count = nbox ? nbox : 1;
 503
 504         for (i = 0; i < count; i++) {
 505                 if (i < nbox) {
 506                         int ret = i915_emit_box(dev, boxes, i,
 507                                                 batch->DR1, batch->DR4);
 508                         if (ret)
 509                                 return ret;
 510                 }
 511
 512                 if (!IS_I830(dev) && !IS_845G(dev)) {
 513                         BEGIN_LP_RING(2);
 514                         if (IS_I965G(dev)) {
 515                                 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
 516                                 OUT_RING(batch->start);
 517                         } else {
 518                                 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
 519                                 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
 520                         }
 521                         ADVANCE_LP_RING();
 522                 } else {
 523                         BEGIN_LP_RING(4);
 524                         OUT_RING(MI_BATCH_BUFFER);
 525                         OUT_RING(batch->start | MI_BATCH_NON_SECURE);
 526                         OUT_RING(batch->start + batch->used - 4);
 527                         OUT_RING(0);
 528                         ADVANCE_LP_RING();
 529                 }
 530         }
 531
 532         i915_emit_breadcrumb(dev);
 533
 534         return 0;
 535 }
 536
 537 static int i915_dispatch_flip(struct drm_device * dev)
 538 {
 539         drm_i915_private_t *dev_priv = dev->dev_private;
 540         struct drm_i915_master_private *master_priv =
 541                 dev->primary->master->driver_priv;
 542         RING_LOCALS;
 543
 544         if (!master_priv->sarea_priv)
 545                 return -EINVAL;
 546
 547         DRM_DEBUG("%s: page=%d pfCurrentPage=%d\n",
 548                   __func__,
 549                   dev_priv->current_page,
 550                   master_priv->sarea_priv->pf_current_page);
 551
 552         i915_kernel_lost_context(dev);
 553
 554         BEGIN_LP_RING(2);
 555         OUT_RING(MI_FLUSH | MI_READ_FLUSH);
 556         OUT_RING(0);
 557         ADVANCE_LP_RING();
 558
 559         BEGIN_LP_RING(6);
 560         OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
 561         OUT_RING(0);
 562         if (dev_priv->current_page == 0) {
 563                 OUT_RING(dev_priv->back_offset);
 564                 dev_priv->current_page = 1;
 565         } else {
 566                 OUT_RING(dev_priv->front_offset);
 567                 dev_priv->current_page = 0;
 568         }
 569         OUT_RING(0);
 570         ADVANCE_LP_RING();
 571
 572         BEGIN_LP_RING(2);
 573         OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
 574         OUT_RING(0);
 575         ADVANCE_LP_RING();
 576
 577         master_priv->sarea_priv->last_enqueue = dev_priv->counter++;
 578
 579         BEGIN_LP_RING(4);
 580         OUT_RING(MI_STORE_DWORD_INDEX);
 581         OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
 582         OUT_RING(dev_priv->counter);
 583         OUT_RING(0);
 584         ADVANCE_LP_RING();
 585
 586         master_priv->sarea_priv->pf_current_page = dev_priv->current_page;
 587         return 0;
 588 }
 589
 590 static int i915_quiescent(struct drm_device * dev)
 591 {
 592         drm_i915_private_t *dev_priv = dev->dev_private;
 593
 594         i915_kernel_lost_context(dev);
 595         return i915_wait_ring(dev, dev_priv->ring.Size - 8, __func__);
 596 }
 597
 598 static int i915_flush_ioctl(struct drm_device *dev, void *data,
 599                             struct drm_file *file_priv)
 600 {
 601         int ret;
 602
 603         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 604
 605         mutex_lock(&dev->struct_mutex);
 606         ret = i915_quiescent(dev);
 607         mutex_unlock(&dev->struct_mutex);
 608
 609         return ret;
 610 }
 611
 612 static int i915_batchbuffer(struct drm_device *dev, void *data,
 613                             struct drm_file *file_priv)
 614 {
 615         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 616         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 617         drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
 618             master_priv->sarea_priv;
 619         drm_i915_batchbuffer_t *batch = data;
 620         int ret;
 621
 622         if (!dev_priv->allow_batchbuffer) {
 623                 DRM_ERROR("Batchbuffer ioctl disabled\n");
 624                 return -EINVAL;
 625         }
 626
 627         DRM_DEBUG("i915 batchbuffer, start %x used %d cliprects %d\n",
 628                   batch->start, batch->used, batch->num_cliprects);
 629
 630         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 631
 632         if (batch->num_cliprects && DRM_VERIFYAREA_READ(batch->cliprects,
 633                                                        batch->num_cliprects *
 634                                                        sizeof(struct drm_clip_rect)))
 635                 return -EFAULT;
 636
 637         mutex_lock(&dev->struct_mutex);
 638         ret = i915_dispatch_batchbuffer(dev, batch);
 639         mutex_unlock(&dev->struct_mutex);
 640
 641         if (sarea_priv)
 642                 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
 643         return ret;
 644 }
 645
 646 static int i915_cmdbuffer(struct drm_device *dev, void *data,
 647                           struct drm_file *file_priv)
 648 {
 649         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 650         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 651         drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
 652             master_priv->sarea_priv;
 653         drm_i915_cmdbuffer_t *cmdbuf = data;
 654         int ret;
 655
 656         DRM_DEBUG("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
 657                   cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
 658
 659         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 660
 661         if (cmdbuf->num_cliprects &&
 662             DRM_VERIFYAREA_READ(cmdbuf->cliprects,
 663                                 cmdbuf->num_cliprects *
 664                                 sizeof(struct drm_clip_rect))) {
 665                 DRM_ERROR("Fault accessing cliprects\n");
 666                 return -EFAULT;
 667         }
 668
 669         mutex_lock(&dev->struct_mutex);
 670         ret = i915_dispatch_cmdbuffer(dev, cmdbuf);
 671         mutex_unlock(&dev->struct_mutex);
 672         if (ret) {
 673                 DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
 674                 return ret;
 675         }
 676
 677         if (sarea_priv)
 678                 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
 679         return 0;
 680 }
 681
 682 static int i915_flip_bufs(struct drm_device *dev, void *data,
 683                           struct drm_file *file_priv)
 684 {
 685         int ret;
 686
 687         DRM_DEBUG("%s\n", __func__);
 688
 689         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 690
 691         mutex_lock(&dev->struct_mutex);
 692         ret = i915_dispatch_flip(dev);
 693         mutex_unlock(&dev->struct_mutex);
 694
 695         return ret;
 696 }
 697
 698 static int i915_getparam(struct drm_device *dev, void *data,
 699                          struct drm_file *file_priv)
 700 {
 701         drm_i915_private_t *dev_priv = dev->dev_private;
 702         drm_i915_getparam_t *param = data;
 703         int value;
 704
 705         if (!dev_priv) {
 706                 DRM_ERROR("called with no initialization\n");
 707                 return -EINVAL;
 708         }
 709
 710         switch (param->param) {
 711         case I915_PARAM_IRQ_ACTIVE:
 712                 value = dev->pdev->irq ? 1 : 0;
 713                 break;
 714         case I915_PARAM_ALLOW_BATCHBUFFER:
 715                 value = dev_priv->allow_batchbuffer ? 1 : 0;
 716                 break;
 717         case I915_PARAM_LAST_DISPATCH:
 718                 value = READ_BREADCRUMB(dev_priv);
 719                 break;
 720         case I915_PARAM_CHIPSET_ID:
 721                 value = dev->pci_device;
 722                 break;
 723         case I915_PARAM_HAS_GEM:
 724                 value = dev_priv->has_gem;
 725                 break;
 726         default:
 727                 DRM_ERROR("Unknown parameter %d\n", param->param);
 728                 return -EINVAL;
 729         }
 730
 731         if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
 732                 DRM_ERROR("DRM_COPY_TO_USER failed\n");
 733                 return -EFAULT;
 734         }
 735
 736         return 0;
 737 }
 738
 739 static int i915_setparam(struct drm_device *dev, void *data,
 740                          struct drm_file *file_priv)
 741 {
 742         drm_i915_private_t *dev_priv = dev->dev_private;
 743         drm_i915_setparam_t *param = data;
 744
 745         if (!dev_priv) {
 746                 DRM_ERROR("called with no initialization\n");
 747                 return -EINVAL;
 748         }
 749
 750         switch (param->param) {
 751         case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
 752                 break;
 753         case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
 754                 dev_priv->tex_lru_log_granularity = param->value;
 755                 break;
 756         case I915_SETPARAM_ALLOW_BATCHBUFFER:
 757                 dev_priv->allow_batchbuffer = param->value;
 758                 break;
 759         default:
 760                 DRM_ERROR("unknown parameter %d\n", param->param);
 761                 return -EINVAL;
 762         }
 763
 764         return 0;
 765 }
 766
 767 static int i915_set_status_page(struct drm_device *dev, void *data,
 768                                 struct drm_file *file_priv)
 769 {
 770         drm_i915_private_t *dev_priv = dev->dev_private;
 771         drm_i915_hws_addr_t *hws = data;
 772
 773         if (!I915_NEED_GFX_HWS(dev))
 774                 return -EINVAL;
 775
 776         if (!dev_priv) {
 777                 DRM_ERROR("called with no initialization\n");
 778                 return -EINVAL;
 779         }
 780
 781         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 782                 WARN(1, "tried to set status page when mode setting active\n");
 783                 return 0;
 784         }
 785
 786         printk(KERN_DEBUG "set status page addr 0x%08x\n", (u32)hws->addr);
 787
 788         dev_priv->status_gfx_addr = hws->addr & (0x1ffff<<12);
 789
 790         dev_priv->hws_map.offset = dev->agp->base + hws->addr;
 791         dev_priv->hws_map.size = 4*1024;
 792         dev_priv->hws_map.type = 0;
 793         dev_priv->hws_map.flags = 0;
 794         dev_priv->hws_map.mtrr = 0;
 795
 796         drm_core_ioremap(&dev_priv->hws_map, dev);
 797         if (dev_priv->hws_map.handle == NULL) {
 798                 i915_dma_cleanup(dev);
 799                 dev_priv->status_gfx_addr = 0;
 800                 DRM_ERROR("can not ioremap virtual address for"
 801                                 " G33 hw status page\n");
 802                 return -ENOMEM;
 803         }
 804         dev_priv->hw_status_page = dev_priv->hws_map.handle;
 805
 806         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
 807         I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
 808         DRM_DEBUG("load hws HWS_PGA with gfx mem 0x%x\n",
 809                         dev_priv->status_gfx_addr);
 810         DRM_DEBUG("load hws at %p\n", dev_priv->hw_status_page);
 811         return 0;
 812 }
 813
 814 /**
 815  * i915_probe_agp - get AGP bootup configuration
 816  * @pdev: PCI device
 817  * @aperture_size: returns AGP aperture configured size
 818  * @preallocated_size: returns size of BIOS preallocated AGP space
 819  *
 820  * Since Intel integrated graphics are UMA, the BIOS has to set aside
 821  * some RAM for the framebuffer at early boot.  This code figures out
 822  * how much was set aside so we can use it for our own purposes.
 823  */
 824 static int i915_probe_agp(struct drm_device *dev, unsigned long *aperture_size,
 825                           unsigned long *preallocated_size)
 826 {
 827         struct pci_dev *bridge_dev;
 828         u16 tmp = 0;
 829         unsigned long overhead;
 830         unsigned long stolen;
 831
 832         bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0));
 833         if (!bridge_dev) {
 834                 DRM_ERROR("bridge device not found\n");
 835                 return -1;
 836         }
 837
 838         /* Get the fb aperture size and "stolen" memory amount. */
 839         pci_read_config_word(bridge_dev, INTEL_GMCH_CTRL, &tmp);
 840         pci_dev_put(bridge_dev);
 841
 842         *aperture_size = 1024 * 1024;
 843         *preallocated_size = 1024 * 1024;
 844
 845         switch (dev->pdev->device) {
 846         case PCI_DEVICE_ID_INTEL_82830_CGC:
 847         case PCI_DEVICE_ID_INTEL_82845G_IG:
 848         case PCI_DEVICE_ID_INTEL_82855GM_IG:
 849         case PCI_DEVICE_ID_INTEL_82865_IG:
 850                 if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M)
 851                         *aperture_size *= 64;
 852                 else
 853                         *aperture_size *= 128;
 854                 break;
 855         default:
 856                 /* 9xx supports large sizes, just look at the length */
 857                 *aperture_size = pci_resource_len(dev->pdev, 2);
 858                 break;
 859         }
 860
 861         /*
 862          * Some of the preallocated space is taken by the GTT
 863          * and popup.  GTT is 1K per MB of aperture size, and popup is 4K.
 864          */
 865         if (IS_G4X(dev))
 866                 overhead = 4096;
 867         else
 868                 overhead = (*aperture_size / 1024) + 4096;
 869
 870         switch (tmp & INTEL_GMCH_GMS_MASK) {
 871         case INTEL_855_GMCH_GMS_DISABLED:
 872                 DRM_ERROR("video memory is disabled\n");
 873                 return -1;
 874         case INTEL_855_GMCH_GMS_STOLEN_1M:
 875                 stolen = 1 * 1024 * 1024;
 876                 break;
 877         case INTEL_855_GMCH_GMS_STOLEN_4M:
 878                 stolen = 4 * 1024 * 1024;
 879                 break;
 880         case INTEL_855_GMCH_GMS_STOLEN_8M:
 881                 stolen = 8 * 1024 * 1024;
 882                 break;
 883         case INTEL_855_GMCH_GMS_STOLEN_16M:
 884                 stolen = 16 * 1024 * 1024;
 885                 break;
 886         case INTEL_855_GMCH_GMS_STOLEN_32M:
 887                 stolen = 32 * 1024 * 1024;
 888                 break;
 889         case INTEL_915G_GMCH_GMS_STOLEN_48M:
 890                 stolen = 48 * 1024 * 1024;
 891                 break;
 892         case INTEL_915G_GMCH_GMS_STOLEN_64M:
 893                 stolen = 64 * 1024 * 1024;
 894                 break;
 895         case INTEL_GMCH_GMS_STOLEN_128M:
 896                 stolen = 128 * 1024 * 1024;
 897                 break;
 898         case INTEL_GMCH_GMS_STOLEN_256M:
 899                 stolen = 256 * 1024 * 1024;
 900                 break;
 901         case INTEL_GMCH_GMS_STOLEN_96M:
 902                 stolen = 96 * 1024 * 1024;
 903                 break;
 904         case INTEL_GMCH_GMS_STOLEN_160M:
 905                 stolen = 160 * 1024 * 1024;
 906                 break;
 907         case INTEL_GMCH_GMS_STOLEN_224M:
 908                 stolen = 224 * 1024 * 1024;
 909                 break;
 910         case INTEL_GMCH_GMS_STOLEN_352M:
 911                 stolen = 352 * 1024 * 1024;
 912                 break;
 913         default:
 914                 DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
 915                         tmp & INTEL_GMCH_GMS_MASK);
 916                 return -1;
 917         }
 918         *preallocated_size = stolen - overhead;
 919
 920         return 0;
 921 }
 922
 923 static int i915_load_modeset_init(struct drm_device *dev)
 924 {
 925         struct drm_i915_private *dev_priv = dev->dev_private;
 926         unsigned long agp_size, prealloc_size;
 927         int fb_bar = IS_I9XX(dev) ? 2 : 0;
 928         int ret = 0;
 929
 930         dev->devname = kstrdup(DRIVER_NAME, GFP_KERNEL);
 931         if (!dev->devname) {
 932                 ret = -ENOMEM;
 933                 goto out;
 934         }
 935
 936         dev->mode_config.fb_base = drm_get_resource_start(dev, fb_bar) &
 937                 0xff000000;
 938
 939         DRM_DEBUG("*** fb base 0x%08lx\n", dev->mode_config.fb_base);
 940
 941         if (IS_MOBILE(dev) || (IS_I9XX(dev) && !IS_I965G(dev) && !IS_G33(dev)))
 942                 dev_priv->cursor_needs_physical = true;
 943         else
 944                 dev_priv->cursor_needs_physical = false;
 945
 946         ret = i915_probe_agp(dev, &agp_size, &prealloc_size);
 947         if (ret)
 948                 goto kfree_devname;
 949
 950         /* Basic memrange allocator for stolen space (aka vram) */
 951         drm_mm_init(&dev_priv->vram, 0, prealloc_size);
 952
 953         /* Let GEM Manage from end of prealloc space to end of aperture */
 954         i915_gem_do_init(dev, prealloc_size, agp_size);
 955
 956         ret = i915_gem_init_ringbuffer(dev);
 957         if (ret)
 958                 goto kfree_devname;
 959
 960         dev_priv->mm.gtt_mapping =
 961                 io_mapping_create_wc(dev->agp->base,
 962                                      dev->agp->agp_info.aper_size * 1024*1024);
 963
 964         /* Allow hardware batchbuffers unless told otherwise.
 965          */
 966         dev_priv->allow_batchbuffer = 1;
 967
 968         ret = intel_init_bios(dev);
 969         if (ret)
 970                 DRM_INFO("failed to find VBIOS tables\n");
 971
 972         ret = drm_irq_install(dev);
 973         if (ret)
 974                 goto destroy_ringbuffer;
 975
 976         /* FIXME: re-add hotplug support */
 977 #if 0
 978         ret = drm_hotplug_init(dev);
 979         if (ret)
 980                 goto destroy_ringbuffer;
 981 #endif
 982
 983         /* Always safe in the mode setting case. */
 984         /* FIXME: do pre/post-mode set stuff in core KMS code */
 985         dev->vblank_disable_allowed = 1;
 986
 987         /*
 988          * Initialize the hardware status page IRQ location.
 989          */
 990
 991         I915_WRITE(INSTPM, (1 << 5) | (1 << 21));
 992
 993         intel_modeset_init(dev);
 994
 995         drm_helper_initial_config(dev, false);
 996
 997         return 0;
 998
 999 destroy_ringbuffer:
1000         i915_gem_cleanup_ringbuffer(dev);
1001 kfree_devname:
1002         kfree(dev->devname);
1003 out:
1004         return ret;
1005 }
1006
1007 int i915_master_create(struct drm_device *dev, struct drm_master *master)
1008 {
1009         struct drm_i915_master_private *master_priv;
1010
1011         master_priv = drm_calloc(1, sizeof(*master_priv), DRM_MEM_DRIVER);
1012         if (!master_priv)
1013                 return -ENOMEM;
1014
1015         master->driver_priv = master_priv;
1016         return 0;
1017 }
1018
1019 void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
1020 {
1021         struct drm_i915_master_private *master_priv = master->driver_priv;
1022
1023         if (!master_priv)
1024                 return;
1025
1026         drm_free(master_priv, sizeof(*master_priv), DRM_MEM_DRIVER);
1027
1028         master->driver_priv = NULL;
1029 }
1030
1031 /**
1032  * i915_driver_load - setup chip and create an initial config
1033  * @dev: DRM device
1034  * @flags: startup flags
1035  *
1036  * The driver load routine has to do several things:
1037  *   - drive output discovery via intel_modeset_init()
1038  *   - initialize the memory manager
1039  *   - allocate initial config memory
1040  *   - setup the DRM framebuffer with the allocated memory
1041  */
1042 int i915_driver_load(struct drm_device *dev, unsigned long flags)
1043 {
1044         struct drm_i915_private *dev_priv = dev->dev_private;
1045         unsigned long base, size;
1046         int ret = 0, mmio_bar = IS_I9XX(dev) ? 0 : 1;
1047
1048         /* i915 has 4 more counters */
1049         dev->counters += 4;
1050         dev->types[6] = _DRM_STAT_IRQ;
1051         dev->types[7] = _DRM_STAT_PRIMARY;
1052         dev->types[8] = _DRM_STAT_SECONDARY;
1053         dev->types[9] = _DRM_STAT_DMA;
1054
1055         dev_priv = drm_alloc(sizeof(drm_i915_private_t), DRM_MEM_DRIVER);
1056         if (dev_priv == NULL)
1057                 return -ENOMEM;
1058
1059         memset(dev_priv, 0, sizeof(drm_i915_private_t));
1060
1061         dev->dev_private = (void *)dev_priv;
1062         dev_priv->dev = dev;
1063
1064         /* Add register map (needed for suspend/resume) */
1065         base = drm_get_resource_start(dev, mmio_bar);
1066         size = drm_get_resource_len(dev, mmio_bar);
1067
1068         dev_priv->regs = ioremap(base, size);
1069         if (!dev_priv->regs) {
1070                 DRM_ERROR("failed to map registers\n");
1071                 ret = -EIO;
1072                 goto free_priv;
1073         }
1074
1075 #ifdef CONFIG_HIGHMEM64G
1076         /* don't enable GEM on PAE - needs agp + set_memory_* interface fixes */
1077         dev_priv->has_gem = 0;
1078 #else
1079         /* enable GEM by default */
1080         dev_priv->has_gem = 1;
1081 #endif
1082
1083         i915_gem_load(dev);
1084
1085         /* Init HWS */
1086         if (!I915_NEED_GFX_HWS(dev)) {
1087                 ret = i915_init_phys_hws(dev);
1088                 if (ret != 0)
1089                         goto out_rmmap;
1090         }
1091
1092         /* On the 945G/GM, the chipset reports the MSI capability on the
1093          * integrated graphics even though the support isn't actually there
1094          * according to the published specs.  It doesn't appear to function
1095          * correctly in testing on 945G.
1096          * This may be a side effect of MSI having been made available for PEG
1097          * and the registers being closely associated.
1098          *
1099          * According to chipset errata, on the 965GM, MSI interrupts may
1100          * be lost or delayed, but we use them anyways to avoid
1101          * stuck interrupts on some machines.
1102          */
1103         if (!IS_I945G(dev) && !IS_I945GM(dev))
1104                 pci_enable_msi(dev->pdev);
1105
1106         intel_opregion_init(dev);
1107
1108         spin_lock_init(&dev_priv->user_irq_lock);
1109         dev_priv->user_irq_refcount = 0;
1110
1111         ret = drm_vblank_init(dev, I915_NUM_PIPE);
1112
1113         if (ret) {
1114                 (void) i915_driver_unload(dev);
1115                 return ret;
1116         }
1117
1118         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1119                 ret = i915_load_modeset_init(dev);
1120                 if (ret < 0) {
1121                         DRM_ERROR("failed to init modeset\n");
1122                         goto out_rmmap;
1123                 }
1124         }
1125
1126         return 0;
1127
1128 out_rmmap:
1129         iounmap(dev_priv->regs);
1130 free_priv:
1131         drm_free(dev_priv, sizeof(struct drm_i915_private), DRM_MEM_DRIVER);
1132         return ret;
1133 }
1134
1135 int i915_driver_unload(struct drm_device *dev)
1136 {
1137         struct drm_i915_private *dev_priv = dev->dev_private;
1138
1139         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1140                 io_mapping_free(dev_priv->mm.gtt_mapping);
1141                 drm_irq_uninstall(dev);
1142         }
1143
1144         if (dev->pdev->msi_enabled)
1145                 pci_disable_msi(dev->pdev);
1146
1147         if (dev_priv->regs != NULL)
1148                 iounmap(dev_priv->regs);
1149
1150         intel_opregion_free(dev);
1151
1152         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1153                 intel_modeset_cleanup(dev);
1154
1155                 mutex_lock(&dev->struct_mutex);
1156                 i915_gem_cleanup_ringbuffer(dev);
1157                 mutex_unlock(&dev->struct_mutex);
1158                 drm_mm_takedown(&dev_priv->vram);
1159                 i915_gem_lastclose(dev);
1160         }
1161
1162         drm_free(dev->dev_private, sizeof(drm_i915_private_t),
1163                  DRM_MEM_DRIVER);
1164
1165         return 0;
1166 }
1167
1168 int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv)
1169 {
1170         struct drm_i915_file_private *i915_file_priv;
1171
1172         DRM_DEBUG("\n");
1173         i915_file_priv = (struct drm_i915_file_private *)
1174             drm_alloc(sizeof(*i915_file_priv), DRM_MEM_FILES);
1175
1176         if (!i915_file_priv)
1177                 return -ENOMEM;
1178
1179         file_priv->driver_priv = i915_file_priv;
1180
1181         i915_file_priv->mm.last_gem_seqno = 0;
1182         i915_file_priv->mm.last_gem_throttle_seqno = 0;
1183
1184         return 0;
1185 }
1186
1187 /**
1188  * i915_driver_lastclose - clean up after all DRM clients have exited
1189  * @dev: DRM device
1190  *
1191  * Take care of cleaning up after all DRM clients have exited.  In the
1192  * mode setting case, we want to restore the kernel's initial mode (just
1193  * in case the last client left us in a bad state).
1194  *
1195  * Additionally, in the non-mode setting case, we'll tear down the AGP
1196  * and DMA structures, since the kernel won't be using them, and clea
1197  * up any GEM state.
1198  */
1199 void i915_driver_lastclose(struct drm_device * dev)
1200 {
1201         drm_i915_private_t *dev_priv = dev->dev_private;
1202
1203         if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) {
1204                 intelfb_restore();
1205                 return;
1206         }
1207
1208         i915_gem_lastclose(dev);
1209
1210         if (dev_priv->agp_heap)
1211                 i915_mem_takedown(&(dev_priv->agp_heap));
1212
1213         i915_dma_cleanup(dev);
1214 }
1215
1216 void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
1217 {
1218         drm_i915_private_t *dev_priv = dev->dev_private;
1219         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1220                 i915_mem_release(dev, file_priv, dev_priv->agp_heap);
1221 }
1222
1223 void i915_driver_postclose(struct drm_device *dev, struct drm_file *file_priv)
1224 {
1225         struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv;
1226
1227         drm_free(i915_file_priv, sizeof(*i915_file_priv), DRM_MEM_FILES);
1228 }
1229
1230 struct drm_ioctl_desc i915_ioctls[] = {
1231         DRM_IOCTL_DEF(DRM_I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1232         DRM_IOCTL_DEF(DRM_I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
1233         DRM_IOCTL_DEF(DRM_I915_FLIP, i915_flip_bufs, DRM_AUTH),
1234         DRM_IOCTL_DEF(DRM_I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
1235         DRM_IOCTL_DEF(DRM_I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
1236         DRM_IOCTL_DEF(DRM_I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
1237         DRM_IOCTL_DEF(DRM_I915_GETPARAM, i915_getparam, DRM_AUTH),
1238         DRM_IOCTL_DEF(DRM_I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1239         DRM_IOCTL_DEF(DRM_I915_ALLOC, i915_mem_alloc, DRM_AUTH),
1240         DRM_IOCTL_DEF(DRM_I915_FREE, i915_mem_free, DRM_AUTH),
1241         DRM_IOCTL_DEF(DRM_I915_INIT_HEAP, i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1242         DRM_IOCTL_DEF(DRM_I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
1243         DRM_IOCTL_DEF(DRM_I915_DESTROY_HEAP,  i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
1244         DRM_IOCTL_DEF(DRM_I915_SET_VBLANK_PIPE,  i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
1245         DRM_IOCTL_DEF(DRM_I915_GET_VBLANK_PIPE,  i915_vblank_pipe_get, DRM_AUTH ),
1246         DRM_IOCTL_DEF(DRM_I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
1247         DRM_IOCTL_DEF(DRM_I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1248         DRM_IOCTL_DEF(DRM_I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1249         DRM_IOCTL_DEF(DRM_I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH),
1250         DRM_IOCTL_DEF(DRM_I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
1251         DRM_IOCTL_DEF(DRM_I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
1252         DRM_IOCTL_DEF(DRM_I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH),
1253         DRM_IOCTL_DEF(DRM_I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH),
1254         DRM_IOCTL_DEF(DRM_I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1255         DRM_IOCTL_DEF(DRM_I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1256         DRM_IOCTL_DEF(DRM_I915_GEM_CREATE, i915_gem_create_ioctl, 0),
1257         DRM_IOCTL_DEF(DRM_I915_GEM_PREAD, i915_gem_pread_ioctl, 0),
1258         DRM_IOCTL_DEF(DRM_I915_GEM_PWRITE, i915_gem_pwrite_ioctl, 0),
1259         DRM_IOCTL_DEF(DRM_I915_GEM_MMAP, i915_gem_mmap_ioctl, 0),
1260         DRM_IOCTL_DEF(DRM_I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, 0),
1261         DRM_IOCTL_DEF(DRM_I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, 0),
1262         DRM_IOCTL_DEF(DRM_I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, 0),
1263         DRM_IOCTL_DEF(DRM_I915_GEM_SET_TILING, i915_gem_set_tiling, 0),
1264         DRM_IOCTL_DEF(DRM_I915_GEM_GET_TILING, i915_gem_get_tiling, 0),
1265         DRM_IOCTL_DEF(DRM_I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, 0),
1266 };
1267
1268 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
1269
1270 /**
1271  * Determine if the device really is AGP or not.
1272  *
1273  * All Intel graphics chipsets are treated as AGP, even if they are really
1274  * PCI-e.
1275  *
1276  * \param dev   The device to be tested.
1277  *
1278  * \returns
1279  * A value of 1 is always retured to indictate every i9x5 is AGP.
1280  */
1281 int i915_driver_device_is_agp(struct drm_device * dev)
1282 {
1283         return 1;
1284 }