git.oblomov.eu Git - linux-2.6/blob - 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 "intel_drv.h"
  33 #include "i915_drm.h"
  34 #include "i915_drv.h"
  35
  36 #define I915_DRV        "i915_drv"
  37
  38 /* Really want an OS-independent resettable timer.  Would like to have
  39  * this loop run for (eg) 3 sec, but have the timer reset every time
  40  * the head pointer changes, so that EBUSY only happens if the ring
  41  * actually stalls for (eg) 3 seconds.
  42  */
  43 int i915_wait_ring(struct drm_device * dev, int n, const char *caller)
  44 {
  45         drm_i915_private_t *dev_priv = dev->dev_private;
  46         drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
  47         u32 acthd_reg = IS_I965G(dev) ? ACTHD_I965 : ACTHD;
  48         u32 last_acthd = I915_READ(acthd_reg);
  49         u32 acthd;
  50         u32 last_head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
  51         int i;
  52
  53         for (i = 0; i < 100000; i++) {
  54                 ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
  55                 acthd = I915_READ(acthd_reg);
  56                 ring->space = ring->head - (ring->tail + 8);
  57                 if (ring->space < 0)
  58                         ring->space += ring->Size;
  59                 if (ring->space >= n)
  60                         return 0;
  61
  62                 if (dev->primary->master) {
  63                         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
  64                         if (master_priv->sarea_priv)
  65                                 master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT;
  66                 }
  67
  68
  69                 if (ring->head != last_head)
  70                         i = 0;
  71                 if (acthd != last_acthd)
  72                         i = 0;
  73
  74                 last_head = ring->head;
  75                 last_acthd = acthd;
  76                 msleep_interruptible(10);
  77
  78         }
  79
  80         return -EBUSY;
  81 }
  82
  83 /**
  84  * Sets up the hardware status page for devices that need a physical address
  85  * in the register.
  86  */
  87 static int i915_init_phys_hws(struct drm_device *dev)
  88 {
  89         drm_i915_private_t *dev_priv = dev->dev_private;
  90         /* Program Hardware Status Page */
  91         dev_priv->status_page_dmah =
  92                 drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff);
  93
  94         if (!dev_priv->status_page_dmah) {
  95                 DRM_ERROR("Can not allocate hardware status page\n");
  96                 return -ENOMEM;
  97         }
  98         dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr;
  99         dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
 100
 101         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
 102
 103         I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
 104         DRM_DEBUG_DRIVER(I915_DRV, "Enabled hardware status page\n");
 105         return 0;
 106 }
 107
 108 /**
 109  * Frees the hardware status page, whether it's a physical address or a virtual
 110  * address set up by the X Server.
 111  */
 112 static void i915_free_hws(struct drm_device *dev)
 113 {
 114         drm_i915_private_t *dev_priv = dev->dev_private;
 115         if (dev_priv->status_page_dmah) {
 116                 drm_pci_free(dev, dev_priv->status_page_dmah);
 117                 dev_priv->status_page_dmah = NULL;
 118         }
 119
 120         if (dev_priv->status_gfx_addr) {
 121                 dev_priv->status_gfx_addr = 0;
 122                 drm_core_ioremapfree(&dev_priv->hws_map, dev);
 123         }
 124
 125         /* Need to rewrite hardware status page */
 126         I915_WRITE(HWS_PGA, 0x1ffff000);
 127 }
 128
 129 void i915_kernel_lost_context(struct drm_device * dev)
 130 {
 131         drm_i915_private_t *dev_priv = dev->dev_private;
 132         struct drm_i915_master_private *master_priv;
 133         drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
 134
 135         /*
 136          * We should never lose context on the ring with modesetting
 137          * as we don't expose it to userspace
 138          */
 139         if (drm_core_check_feature(dev, DRIVER_MODESET))
 140                 return;
 141
 142         ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 143         ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 144         ring->space = ring->head - (ring->tail + 8);
 145         if (ring->space < 0)
 146                 ring->space += ring->Size;
 147
 148         if (!dev->primary->master)
 149                 return;
 150
 151         master_priv = dev->primary->master->driver_priv;
 152         if (ring->head == ring->tail && master_priv->sarea_priv)
 153                 master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
 154 }
 155
 156 static int i915_dma_cleanup(struct drm_device * dev)
 157 {
 158         drm_i915_private_t *dev_priv = dev->dev_private;
 159         /* Make sure interrupts are disabled here because the uninstall ioctl
 160          * may not have been called from userspace and after dev_private
 161          * is freed, it's too late.
 162          */
 163         if (dev->irq_enabled)
 164                 drm_irq_uninstall(dev);
 165
 166         if (dev_priv->ring.virtual_start) {
 167                 drm_core_ioremapfree(&dev_priv->ring.map, dev);
 168                 dev_priv->ring.virtual_start = NULL;
 169                 dev_priv->ring.map.handle = NULL;
 170                 dev_priv->ring.map.size = 0;
 171         }
 172
 173         /* Clear the HWS virtual address at teardown */
 174         if (I915_NEED_GFX_HWS(dev))
 175                 i915_free_hws(dev);
 176
 177         return 0;
 178 }
 179
 180 static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
 181 {
 182         drm_i915_private_t *dev_priv = dev->dev_private;
 183         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 184
 185         master_priv->sarea = drm_getsarea(dev);
 186         if (master_priv->sarea) {
 187                 master_priv->sarea_priv = (drm_i915_sarea_t *)
 188                         ((u8 *)master_priv->sarea->handle + init->sarea_priv_offset);
 189         } else {
 190                 DRM_DEBUG_DRIVER(I915_DRV,
 191                                 "sarea not found assuming DRI2 userspace\n");
 192         }
 193
 194         if (init->ring_size != 0) {
 195                 if (dev_priv->ring.ring_obj != NULL) {
 196                         i915_dma_cleanup(dev);
 197                         DRM_ERROR("Client tried to initialize ringbuffer in "
 198                                   "GEM mode\n");
 199                         return -EINVAL;
 200                 }
 201
 202                 dev_priv->ring.Size = init->ring_size;
 203                 dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
 204
 205                 dev_priv->ring.map.offset = init->ring_start;
 206                 dev_priv->ring.map.size = init->ring_size;
 207                 dev_priv->ring.map.type = 0;
 208                 dev_priv->ring.map.flags = 0;
 209                 dev_priv->ring.map.mtrr = 0;
 210
 211                 drm_core_ioremap_wc(&dev_priv->ring.map, dev);
 212
 213                 if (dev_priv->ring.map.handle == NULL) {
 214                         i915_dma_cleanup(dev);
 215                         DRM_ERROR("can not ioremap virtual address for"
 216                                   " ring buffer\n");
 217                         return -ENOMEM;
 218                 }
 219         }
 220
 221         dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
 222
 223         dev_priv->cpp = init->cpp;
 224         dev_priv->back_offset = init->back_offset;
 225         dev_priv->front_offset = init->front_offset;
 226         dev_priv->current_page = 0;
 227         if (master_priv->sarea_priv)
 228                 master_priv->sarea_priv->pf_current_page = 0;
 229
 230         /* Allow hardware batchbuffers unless told otherwise.
 231          */
 232         dev_priv->allow_batchbuffer = 1;
 233
 234         return 0;
 235 }
 236
 237 static int i915_dma_resume(struct drm_device * dev)
 238 {
 239         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 240
 241         DRM_DEBUG_DRIVER(I915_DRV, "%s\n", __func__);
 242
 243         if (dev_priv->ring.map.handle == NULL) {
 244                 DRM_ERROR("can not ioremap virtual address for"
 245                           " ring buffer\n");
 246                 return -ENOMEM;
 247         }
 248
 249         /* Program Hardware Status Page */
 250         if (!dev_priv->hw_status_page) {
 251                 DRM_ERROR("Can not find hardware status page\n");
 252                 return -EINVAL;
 253         }
 254         DRM_DEBUG_DRIVER(I915_DRV, "hw status page @ %p\n",
 255                                 dev_priv->hw_status_page);
 256
 257         if (dev_priv->status_gfx_addr != 0)
 258                 I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
 259         else
 260                 I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
 261         DRM_DEBUG_DRIVER(I915_DRV, "Enabled hardware status page\n");
 262
 263         return 0;
 264 }
 265
 266 static int i915_dma_init(struct drm_device *dev, void *data,
 267                          struct drm_file *file_priv)
 268 {
 269         drm_i915_init_t *init = data;
 270         int retcode = 0;
 271
 272         switch (init->func) {
 273         case I915_INIT_DMA:
 274                 retcode = i915_initialize(dev, init);
 275                 break;
 276         case I915_CLEANUP_DMA:
 277                 retcode = i915_dma_cleanup(dev);
 278                 break;
 279         case I915_RESUME_DMA:
 280                 retcode = i915_dma_resume(dev);
 281                 break;
 282         default:
 283                 retcode = -EINVAL;
 284                 break;
 285         }
 286
 287         return retcode;
 288 }
 289
 290 /* Implement basically the same security restrictions as hardware does
 291  * for MI_BATCH_NON_SECURE.  These can be made stricter at any time.
 292  *
 293  * Most of the calculations below involve calculating the size of a
 294  * particular instruction.  It's important to get the size right as
 295  * that tells us where the next instruction to check is.  Any illegal
 296  * instruction detected will be given a size of zero, which is a
 297  * signal to abort the rest of the buffer.
 298  */
 299 static int do_validate_cmd(int cmd)
 300 {
 301         switch (((cmd >> 29) & 0x7)) {
 302         case 0x0:
 303                 switch ((cmd >> 23) & 0x3f) {
 304                 case 0x0:
 305                         return 1;       /* MI_NOOP */
 306                 case 0x4:
 307                         return 1;       /* MI_FLUSH */
 308                 default:
 309                         return 0;       /* disallow everything else */
 310                 }
 311                 break;
 312         case 0x1:
 313                 return 0;       /* reserved */
 314         case 0x2:
 315                 return (cmd & 0xff) + 2;        /* 2d commands */
 316         case 0x3:
 317                 if (((cmd >> 24) & 0x1f) <= 0x18)
 318                         return 1;
 319
 320                 switch ((cmd >> 24) & 0x1f) {
 321                 case 0x1c:
 322                         return 1;
 323                 case 0x1d:
 324                         switch ((cmd >> 16) & 0xff) {
 325                         case 0x3:
 326                                 return (cmd & 0x1f) + 2;
 327                         case 0x4:
 328                                 return (cmd & 0xf) + 2;
 329                         default:
 330                                 return (cmd & 0xffff) + 2;
 331                         }
 332                 case 0x1e:
 333                         if (cmd & (1 << 23))
 334                                 return (cmd & 0xffff) + 1;
 335                         else
 336                                 return 1;
 337                 case 0x1f:
 338                         if ((cmd & (1 << 23)) == 0)     /* inline vertices */
 339                                 return (cmd & 0x1ffff) + 2;
 340                         else if (cmd & (1 << 17))       /* indirect random */
 341                                 if ((cmd & 0xffff) == 0)
 342                                         return 0;       /* unknown length, too hard */
 343                                 else
 344                                         return (((cmd & 0xffff) + 1) / 2) + 1;
 345                         else
 346                                 return 2;       /* indirect sequential */
 347                 default:
 348                         return 0;
 349                 }
 350         default:
 351                 return 0;
 352         }
 353
 354         return 0;
 355 }
 356
 357 static int validate_cmd(int cmd)
 358 {
 359         int ret = do_validate_cmd(cmd);
 360
 361 /*      printk("validate_cmd( %x ): %d\n", cmd, ret); */
 362
 363         return ret;
 364 }
 365
 366 static int i915_emit_cmds(struct drm_device * dev, int *buffer, int dwords)
 367 {
 368         drm_i915_private_t *dev_priv = dev->dev_private;
 369         int i;
 370         RING_LOCALS;
 371
 372         if ((dwords+1) * sizeof(int) >= dev_priv->ring.Size - 8)
 373                 return -EINVAL;
 374
 375         BEGIN_LP_RING((dwords+1)&~1);
 376
 377         for (i = 0; i < dwords;) {
 378                 int cmd, sz;
 379
 380                 cmd = buffer[i];
 381
 382                 if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords)
 383                         return -EINVAL;
 384
 385                 OUT_RING(cmd);
 386
 387                 while (++i, --sz) {
 388                         OUT_RING(buffer[i]);
 389                 }
 390         }
 391
 392         if (dwords & 1)
 393                 OUT_RING(0);
 394
 395         ADVANCE_LP_RING();
 396
 397         return 0;
 398 }
 399
 400 int
 401 i915_emit_box(struct drm_device *dev,
 402               struct drm_clip_rect *boxes,
 403               int i, int DR1, int DR4)
 404 {
 405         drm_i915_private_t *dev_priv = dev->dev_private;
 406         struct drm_clip_rect box = boxes[i];
 407         RING_LOCALS;
 408
 409         if (box.y2 <= box.y1 || box.x2 <= box.x1 || box.y2 <= 0 || box.x2 <= 0) {
 410                 DRM_ERROR("Bad box %d,%d..%d,%d\n",
 411                           box.x1, box.y1, box.x2, box.y2);
 412                 return -EINVAL;
 413         }
 414
 415         if (IS_I965G(dev)) {
 416                 BEGIN_LP_RING(4);
 417                 OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
 418                 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
 419                 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
 420                 OUT_RING(DR4);
 421                 ADVANCE_LP_RING();
 422         } else {
 423                 BEGIN_LP_RING(6);
 424                 OUT_RING(GFX_OP_DRAWRECT_INFO);
 425                 OUT_RING(DR1);
 426                 OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
 427                 OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
 428                 OUT_RING(DR4);
 429                 OUT_RING(0);
 430                 ADVANCE_LP_RING();
 431         }
 432
 433         return 0;
 434 }
 435
 436 /* XXX: Emitting the counter should really be moved to part of the IRQ
 437  * emit. For now, do it in both places:
 438  */
 439
 440 static void i915_emit_breadcrumb(struct drm_device *dev)
 441 {
 442         drm_i915_private_t *dev_priv = dev->dev_private;
 443         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 444         RING_LOCALS;
 445
 446         dev_priv->counter++;
 447         if (dev_priv->counter > 0x7FFFFFFFUL)
 448                 dev_priv->counter = 0;
 449         if (master_priv->sarea_priv)
 450                 master_priv->sarea_priv->last_enqueue = dev_priv->counter;
 451
 452         BEGIN_LP_RING(4);
 453         OUT_RING(MI_STORE_DWORD_INDEX);
 454         OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
 455         OUT_RING(dev_priv->counter);
 456         OUT_RING(0);
 457         ADVANCE_LP_RING();
 458 }
 459
 460 static int i915_dispatch_cmdbuffer(struct drm_device * dev,
 461                                    drm_i915_cmdbuffer_t *cmd,
 462                                    struct drm_clip_rect *cliprects,
 463                                    void *cmdbuf)
 464 {
 465         int nbox = cmd->num_cliprects;
 466         int i = 0, count, ret;
 467
 468         if (cmd->sz & 0x3) {
 469                 DRM_ERROR("alignment");
 470                 return -EINVAL;
 471         }
 472
 473         i915_kernel_lost_context(dev);
 474
 475         count = nbox ? nbox : 1;
 476
 477         for (i = 0; i < count; i++) {
 478                 if (i < nbox) {
 479                         ret = i915_emit_box(dev, cliprects, i,
 480                                             cmd->DR1, cmd->DR4);
 481                         if (ret)
 482                                 return ret;
 483                 }
 484
 485                 ret = i915_emit_cmds(dev, cmdbuf, cmd->sz / 4);
 486                 if (ret)
 487                         return ret;
 488         }
 489
 490         i915_emit_breadcrumb(dev);
 491         return 0;
 492 }
 493
 494 static int i915_dispatch_batchbuffer(struct drm_device * dev,
 495                                      drm_i915_batchbuffer_t * batch,
 496                                      struct drm_clip_rect *cliprects)
 497 {
 498         drm_i915_private_t *dev_priv = dev->dev_private;
 499         int nbox = batch->num_cliprects;
 500         int i = 0, count;
 501         RING_LOCALS;
 502
 503         if ((batch->start | batch->used) & 0x7) {
 504                 DRM_ERROR("alignment");
 505                 return -EINVAL;
 506         }
 507
 508         i915_kernel_lost_context(dev);
 509
 510         count = nbox ? nbox : 1;
 511
 512         for (i = 0; i < count; i++) {
 513                 if (i < nbox) {
 514                         int ret = i915_emit_box(dev, cliprects, i,
 515                                                 batch->DR1, batch->DR4);
 516                         if (ret)
 517                                 return ret;
 518                 }
 519
 520                 if (!IS_I830(dev) && !IS_845G(dev)) {
 521                         BEGIN_LP_RING(2);
 522                         if (IS_I965G(dev)) {
 523                                 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
 524                                 OUT_RING(batch->start);
 525                         } else {
 526                                 OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
 527                                 OUT_RING(batch->start | MI_BATCH_NON_SECURE);
 528                         }
 529                         ADVANCE_LP_RING();
 530                 } else {
 531                         BEGIN_LP_RING(4);
 532                         OUT_RING(MI_BATCH_BUFFER);
 533                         OUT_RING(batch->start | MI_BATCH_NON_SECURE);
 534                         OUT_RING(batch->start + batch->used - 4);
 535                         OUT_RING(0);
 536                         ADVANCE_LP_RING();
 537                 }
 538         }
 539
 540         i915_emit_breadcrumb(dev);
 541
 542         return 0;
 543 }
 544
 545 static int i915_dispatch_flip(struct drm_device * dev)
 546 {
 547         drm_i915_private_t *dev_priv = dev->dev_private;
 548         struct drm_i915_master_private *master_priv =
 549                 dev->primary->master->driver_priv;
 550         RING_LOCALS;
 551
 552         if (!master_priv->sarea_priv)
 553                 return -EINVAL;
 554
 555         DRM_DEBUG_DRIVER(I915_DRV, "%s: page=%d pfCurrentPage=%d\n",
 556                           __func__,
 557                          dev_priv->current_page,
 558                          master_priv->sarea_priv->pf_current_page);
 559
 560         i915_kernel_lost_context(dev);
 561
 562         BEGIN_LP_RING(2);
 563         OUT_RING(MI_FLUSH | MI_READ_FLUSH);
 564         OUT_RING(0);
 565         ADVANCE_LP_RING();
 566
 567         BEGIN_LP_RING(6);
 568         OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
 569         OUT_RING(0);
 570         if (dev_priv->current_page == 0) {
 571                 OUT_RING(dev_priv->back_offset);
 572                 dev_priv->current_page = 1;
 573         } else {
 574                 OUT_RING(dev_priv->front_offset);
 575                 dev_priv->current_page = 0;
 576         }
 577         OUT_RING(0);
 578         ADVANCE_LP_RING();
 579
 580         BEGIN_LP_RING(2);
 581         OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
 582         OUT_RING(0);
 583         ADVANCE_LP_RING();
 584
 585         master_priv->sarea_priv->last_enqueue = dev_priv->counter++;
 586
 587         BEGIN_LP_RING(4);
 588         OUT_RING(MI_STORE_DWORD_INDEX);
 589         OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
 590         OUT_RING(dev_priv->counter);
 591         OUT_RING(0);
 592         ADVANCE_LP_RING();
 593
 594         master_priv->sarea_priv->pf_current_page = dev_priv->current_page;
 595         return 0;
 596 }
 597
 598 static int i915_quiescent(struct drm_device * dev)
 599 {
 600         drm_i915_private_t *dev_priv = dev->dev_private;
 601
 602         i915_kernel_lost_context(dev);
 603         return i915_wait_ring(dev, dev_priv->ring.Size - 8, __func__);
 604 }
 605
 606 static int i915_flush_ioctl(struct drm_device *dev, void *data,
 607                             struct drm_file *file_priv)
 608 {
 609         int ret;
 610
 611         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 612
 613         mutex_lock(&dev->struct_mutex);
 614         ret = i915_quiescent(dev);
 615         mutex_unlock(&dev->struct_mutex);
 616
 617         return ret;
 618 }
 619
 620 static int i915_batchbuffer(struct drm_device *dev, void *data,
 621                             struct drm_file *file_priv)
 622 {
 623         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 624         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 625         drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
 626             master_priv->sarea_priv;
 627         drm_i915_batchbuffer_t *batch = data;
 628         int ret;
 629         struct drm_clip_rect *cliprects = NULL;
 630
 631         if (!dev_priv->allow_batchbuffer) {
 632                 DRM_ERROR("Batchbuffer ioctl disabled\n");
 633                 return -EINVAL;
 634         }
 635
 636         DRM_DEBUG_DRIVER(I915_DRV,
 637                         "i915 batchbuffer, start %x used %d cliprects %d\n",
 638                         batch->start, batch->used, batch->num_cliprects);
 639
 640         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 641
 642         if (batch->num_cliprects < 0)
 643                 return -EINVAL;
 644
 645         if (batch->num_cliprects) {
 646                 cliprects = drm_calloc(batch->num_cliprects,
 647                                        sizeof(struct drm_clip_rect),
 648                                        DRM_MEM_DRIVER);
 649                 if (cliprects == NULL)
 650                         return -ENOMEM;
 651
 652                 ret = copy_from_user(cliprects, batch->cliprects,
 653                                      batch->num_cliprects *
 654                                      sizeof(struct drm_clip_rect));
 655                 if (ret != 0)
 656                         goto fail_free;
 657         }
 658
 659         mutex_lock(&dev->struct_mutex);
 660         ret = i915_dispatch_batchbuffer(dev, batch, cliprects);
 661         mutex_unlock(&dev->struct_mutex);
 662
 663         if (sarea_priv)
 664                 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
 665
 666 fail_free:
 667         drm_free(cliprects,
 668                  batch->num_cliprects * sizeof(struct drm_clip_rect),
 669                  DRM_MEM_DRIVER);
 670
 671         return ret;
 672 }
 673
 674 static int i915_cmdbuffer(struct drm_device *dev, void *data,
 675                           struct drm_file *file_priv)
 676 {
 677         drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 678         struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
 679         drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
 680             master_priv->sarea_priv;
 681         drm_i915_cmdbuffer_t *cmdbuf = data;
 682         struct drm_clip_rect *cliprects = NULL;
 683         void *batch_data;
 684         int ret;
 685
 686         DRM_DEBUG_DRIVER(I915_DRV,
 687                         "i915 cmdbuffer, buf %p sz %d cliprects %d\n",
 688                         cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
 689
 690         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 691
 692         if (cmdbuf->num_cliprects < 0)
 693                 return -EINVAL;
 694
 695         batch_data = drm_alloc(cmdbuf->sz, DRM_MEM_DRIVER);
 696         if (batch_data == NULL)
 697                 return -ENOMEM;
 698
 699         ret = copy_from_user(batch_data, cmdbuf->buf, cmdbuf->sz);
 700         if (ret != 0)
 701                 goto fail_batch_free;
 702
 703         if (cmdbuf->num_cliprects) {
 704                 cliprects = drm_calloc(cmdbuf->num_cliprects,
 705                                        sizeof(struct drm_clip_rect),
 706                                        DRM_MEM_DRIVER);
 707                 if (cliprects == NULL)
 708                         goto fail_batch_free;
 709
 710                 ret = copy_from_user(cliprects, cmdbuf->cliprects,
 711                                      cmdbuf->num_cliprects *
 712                                      sizeof(struct drm_clip_rect));
 713                 if (ret != 0)
 714                         goto fail_clip_free;
 715         }
 716
 717         mutex_lock(&dev->struct_mutex);
 718         ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data);
 719         mutex_unlock(&dev->struct_mutex);
 720         if (ret) {
 721                 DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
 722                 goto fail_clip_free;
 723         }
 724
 725         if (sarea_priv)
 726                 sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
 727
 728 fail_clip_free:
 729         drm_free(cliprects,
 730                  cmdbuf->num_cliprects * sizeof(struct drm_clip_rect),
 731                  DRM_MEM_DRIVER);
 732 fail_batch_free:
 733         drm_free(batch_data, cmdbuf->sz, DRM_MEM_DRIVER);
 734
 735         return ret;
 736 }
 737
 738 static int i915_flip_bufs(struct drm_device *dev, void *data,
 739                           struct drm_file *file_priv)
 740 {
 741         int ret;
 742
 743         DRM_DEBUG_DRIVER(I915_DRV, "%s\n", __func__);
 744
 745         RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
 746
 747         mutex_lock(&dev->struct_mutex);
 748         ret = i915_dispatch_flip(dev);
 749         mutex_unlock(&dev->struct_mutex);
 750
 751         return ret;
 752 }
 753
 754 static int i915_getparam(struct drm_device *dev, void *data,
 755                          struct drm_file *file_priv)
 756 {
 757         drm_i915_private_t *dev_priv = dev->dev_private;
 758         drm_i915_getparam_t *param = data;
 759         int value;
 760
 761         if (!dev_priv) {
 762                 DRM_ERROR("called with no initialization\n");
 763                 return -EINVAL;
 764         }
 765
 766         switch (param->param) {
 767         case I915_PARAM_IRQ_ACTIVE:
 768                 value = dev->pdev->irq ? 1 : 0;
 769                 break;
 770         case I915_PARAM_ALLOW_BATCHBUFFER:
 771                 value = dev_priv->allow_batchbuffer ? 1 : 0;
 772                 break;
 773         case I915_PARAM_LAST_DISPATCH:
 774                 value = READ_BREADCRUMB(dev_priv);
 775                 break;
 776         case I915_PARAM_CHIPSET_ID:
 777                 value = dev->pci_device;
 778                 break;
 779         case I915_PARAM_HAS_GEM:
 780                 value = dev_priv->has_gem;
 781                 break;
 782         case I915_PARAM_NUM_FENCES_AVAIL:
 783                 value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
 784                 break;
 785         default:
 786                 DRM_DEBUG_DRIVER(I915_DRV, "Unknown parameter %d\n",
 787                                         param->param);
 788                 return -EINVAL;
 789         }
 790
 791         if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
 792                 DRM_ERROR("DRM_COPY_TO_USER failed\n");
 793                 return -EFAULT;
 794         }
 795
 796         return 0;
 797 }
 798
 799 static int i915_setparam(struct drm_device *dev, void *data,
 800                          struct drm_file *file_priv)
 801 {
 802         drm_i915_private_t *dev_priv = dev->dev_private;
 803         drm_i915_setparam_t *param = data;
 804
 805         if (!dev_priv) {
 806                 DRM_ERROR("called with no initialization\n");
 807                 return -EINVAL;
 808         }
 809
 810         switch (param->param) {
 811         case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
 812                 break;
 813         case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
 814                 dev_priv->tex_lru_log_granularity = param->value;
 815                 break;
 816         case I915_SETPARAM_ALLOW_BATCHBUFFER:
 817                 dev_priv->allow_batchbuffer = param->value;
 818                 break;
 819         case I915_SETPARAM_NUM_USED_FENCES:
 820                 if (param->value > dev_priv->num_fence_regs ||
 821                     param->value < 0)
 822                         return -EINVAL;
 823                 /* Userspace can use first N regs */
 824                 dev_priv->fence_reg_start = param->value;
 825                 break;
 826         default:
 827                 DRM_DEBUG_DRIVER(I915_DRV, "unknown parameter %d\n",
 828                                         param->param);
 829                 return -EINVAL;
 830         }
 831
 832         return 0;
 833 }
 834
 835 static int i915_set_status_page(struct drm_device *dev, void *data,
 836                                 struct drm_file *file_priv)
 837 {
 838         drm_i915_private_t *dev_priv = dev->dev_private;
 839         drm_i915_hws_addr_t *hws = data;
 840
 841         if (!I915_NEED_GFX_HWS(dev))
 842                 return -EINVAL;
 843
 844         if (!dev_priv) {
 845                 DRM_ERROR("called with no initialization\n");
 846                 return -EINVAL;
 847         }
 848
 849         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 850                 WARN(1, "tried to set status page when mode setting active\n");
 851                 return 0;
 852         }
 853
 854         printk(KERN_DEBUG "set status page addr 0x%08x\n", (u32)hws->addr);
 855
 856         dev_priv->status_gfx_addr = hws->addr & (0x1ffff<<12);
 857
 858         dev_priv->hws_map.offset = dev->agp->base + hws->addr;
 859         dev_priv->hws_map.size = 4*1024;
 860         dev_priv->hws_map.type = 0;
 861         dev_priv->hws_map.flags = 0;
 862         dev_priv->hws_map.mtrr = 0;
 863
 864         drm_core_ioremap_wc(&dev_priv->hws_map, dev);
 865         if (dev_priv->hws_map.handle == NULL) {
 866                 i915_dma_cleanup(dev);
 867                 dev_priv->status_gfx_addr = 0;
 868                 DRM_ERROR("can not ioremap virtual address for"
 869                                 " G33 hw status page\n");
 870                 return -ENOMEM;
 871         }
 872         dev_priv->hw_status_page = dev_priv->hws_map.handle;
 873
 874         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
 875         I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
 876         DRM_DEBUG_DRIVER(I915_DRV, "load hws HWS_PGA with gfx mem 0x%x\n",
 877                                 dev_priv->status_gfx_addr);
 878         DRM_DEBUG_DRIVER(I915_DRV, "load hws at %p\n",
 879                                 dev_priv->hw_status_page);
 880         return 0;
 881 }
 882
 883 /**
 884  * i915_probe_agp - get AGP bootup configuration
 885  * @pdev: PCI device
 886  * @aperture_size: returns AGP aperture configured size
 887  * @preallocated_size: returns size of BIOS preallocated AGP space
 888  *
 889  * Since Intel integrated graphics are UMA, the BIOS has to set aside
 890  * some RAM for the framebuffer at early boot.  This code figures out
 891  * how much was set aside so we can use it for our own purposes.
 892  */
 893 static int i915_probe_agp(struct drm_device *dev, unsigned long *aperture_size,
 894                           unsigned long *preallocated_size)
 895 {
 896         struct pci_dev *bridge_dev;
 897         u16 tmp = 0;
 898         unsigned long overhead;
 899         unsigned long stolen;
 900
 901         bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0));
 902         if (!bridge_dev) {
 903                 DRM_ERROR("bridge device not found\n");
 904                 return -1;
 905         }
 906
 907         /* Get the fb aperture size and "stolen" memory amount. */
 908         pci_read_config_word(bridge_dev, INTEL_GMCH_CTRL, &tmp);
 909         pci_dev_put(bridge_dev);
 910
 911         *aperture_size = 1024 * 1024;
 912         *preallocated_size = 1024 * 1024;
 913
 914         switch (dev->pdev->device) {
 915         case PCI_DEVICE_ID_INTEL_82830_CGC:
 916         case PCI_DEVICE_ID_INTEL_82845G_IG:
 917         case PCI_DEVICE_ID_INTEL_82855GM_IG:
 918         case PCI_DEVICE_ID_INTEL_82865_IG:
 919                 if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M)
 920                         *aperture_size *= 64;
 921                 else
 922                         *aperture_size *= 128;
 923                 break;
 924         default:
 925                 /* 9xx supports large sizes, just look at the length */
 926                 *aperture_size = pci_resource_len(dev->pdev, 2);
 927                 break;
 928         }
 929
 930         /*
 931          * Some of the preallocated space is taken by the GTT
 932          * and popup.  GTT is 1K per MB of aperture size, and popup is 4K.
 933          */
 934         if (IS_G4X(dev) || IS_IGD(dev) || IS_IGDNG(dev))
 935                 overhead = 4096;
 936         else
 937                 overhead = (*aperture_size / 1024) + 4096;
 938
 939         switch (tmp & INTEL_GMCH_GMS_MASK) {
 940         case INTEL_855_GMCH_GMS_DISABLED:
 941                 DRM_ERROR("video memory is disabled\n");
 942                 return -1;
 943         case INTEL_855_GMCH_GMS_STOLEN_1M:
 944                 stolen = 1 * 1024 * 1024;
 945                 break;
 946         case INTEL_855_GMCH_GMS_STOLEN_4M:
 947                 stolen = 4 * 1024 * 1024;
 948                 break;
 949         case INTEL_855_GMCH_GMS_STOLEN_8M:
 950                 stolen = 8 * 1024 * 1024;
 951                 break;
 952         case INTEL_855_GMCH_GMS_STOLEN_16M:
 953                 stolen = 16 * 1024 * 1024;
 954                 break;
 955         case INTEL_855_GMCH_GMS_STOLEN_32M:
 956                 stolen = 32 * 1024 * 1024;
 957                 break;
 958         case INTEL_915G_GMCH_GMS_STOLEN_48M:
 959                 stolen = 48 * 1024 * 1024;
 960                 break;
 961         case INTEL_915G_GMCH_GMS_STOLEN_64M:
 962                 stolen = 64 * 1024 * 1024;
 963                 break;
 964         case INTEL_GMCH_GMS_STOLEN_128M:
 965                 stolen = 128 * 1024 * 1024;
 966                 break;
 967         case INTEL_GMCH_GMS_STOLEN_256M:
 968                 stolen = 256 * 1024 * 1024;
 969                 break;
 970         case INTEL_GMCH_GMS_STOLEN_96M:
 971                 stolen = 96 * 1024 * 1024;
 972                 break;
 973         case INTEL_GMCH_GMS_STOLEN_160M:
 974                 stolen = 160 * 1024 * 1024;
 975                 break;
 976         case INTEL_GMCH_GMS_STOLEN_224M:
 977                 stolen = 224 * 1024 * 1024;
 978                 break;
 979         case INTEL_GMCH_GMS_STOLEN_352M:
 980                 stolen = 352 * 1024 * 1024;
 981                 break;
 982         default:
 983                 DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
 984                         tmp & INTEL_GMCH_GMS_MASK);
 985                 return -1;
 986         }
 987         *preallocated_size = stolen - overhead;
 988
 989         return 0;
 990 }
 991
 992 static int i915_load_modeset_init(struct drm_device *dev)
 993 {
 994         struct drm_i915_private *dev_priv = dev->dev_private;
 995         unsigned long agp_size, prealloc_size;
 996         int fb_bar = IS_I9XX(dev) ? 2 : 0;
 997         int ret = 0;
 998
 999         dev->devname = kstrdup(DRIVER_NAME, GFP_KERNEL);
1000         if (!dev->devname) {
1001                 ret = -ENOMEM;
1002                 goto out;
1003         }
1004
1005         dev->mode_config.fb_base = drm_get_resource_start(dev, fb_bar) &
1006                 0xff000000;
1007
1008         if (IS_MOBILE(dev) || IS_I9XX(dev))
1009                 dev_priv->cursor_needs_physical = true;
1010         else
1011                 dev_priv->cursor_needs_physical = false;
1012
1013         if (IS_I965G(dev) || IS_G33(dev))
1014                 dev_priv->cursor_needs_physical = false;
1015
1016         ret = i915_probe_agp(dev, &agp_size, &prealloc_size);
1017         if (ret)
1018                 goto kfree_devname;
1019
1020         /* Basic memrange allocator for stolen space (aka vram) */
1021         drm_mm_init(&dev_priv->vram, 0, prealloc_size);
1022
1023         /* Let GEM Manage from end of prealloc space to end of aperture.
1024          *
1025          * However, leave one page at the end still bound to the scratch page.
1026          * There are a number of places where the hardware apparently
1027          * prefetches past the end of the object, and we've seen multiple
1028          * hangs with the GPU head pointer stuck in a batchbuffer bound
1029          * at the last page of the aperture.  One page should be enough to
1030          * keep any prefetching inside of the aperture.
1031          */
1032         i915_gem_do_init(dev, prealloc_size, agp_size - 4096);
1033
1034         ret = i915_gem_init_ringbuffer(dev);
1035         if (ret)
1036                 goto kfree_devname;
1037
1038         /* Allow hardware batchbuffers unless told otherwise.
1039          */
1040         dev_priv->allow_batchbuffer = 1;
1041
1042         ret = intel_init_bios(dev);
1043         if (ret)
1044                 DRM_INFO("failed to find VBIOS tables\n");
1045
1046         ret = drm_irq_install(dev);
1047         if (ret)
1048                 goto destroy_ringbuffer;
1049
1050         /* Always safe in the mode setting case. */
1051         /* FIXME: do pre/post-mode set stuff in core KMS code */
1052         dev->vblank_disable_allowed = 1;
1053
1054         /*
1055          * Initialize the hardware status page IRQ location.
1056          */
1057
1058         I915_WRITE(INSTPM, (1 << 5) | (1 << 21));
1059
1060         intel_modeset_init(dev);
1061
1062         drm_helper_initial_config(dev);
1063
1064         return 0;
1065
1066 destroy_ringbuffer:
1067         i915_gem_cleanup_ringbuffer(dev);
1068 kfree_devname:
1069         kfree(dev->devname);
1070 out:
1071         return ret;
1072 }
1073
1074 int i915_master_create(struct drm_device *dev, struct drm_master *master)
1075 {
1076         struct drm_i915_master_private *master_priv;
1077
1078         master_priv = drm_calloc(1, sizeof(*master_priv), DRM_MEM_DRIVER);
1079         if (!master_priv)
1080                 return -ENOMEM;
1081
1082         master->driver_priv = master_priv;
1083         return 0;
1084 }
1085
1086 void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
1087 {
1088         struct drm_i915_master_private *master_priv = master->driver_priv;
1089
1090         if (!master_priv)
1091                 return;
1092
1093         drm_free(master_priv, sizeof(*master_priv), DRM_MEM_DRIVER);
1094
1095         master->driver_priv = NULL;
1096 }
1097
1098 /**
1099  * i915_driver_load - setup chip and create an initial config
1100  * @dev: DRM device
1101  * @flags: startup flags
1102  *
1103  * The driver load routine has to do several things:
1104  *   - drive output discovery via intel_modeset_init()
1105  *   - initialize the memory manager
1106  *   - allocate initial config memory
1107  *   - setup the DRM framebuffer with the allocated memory
1108  */
1109 int i915_driver_load(struct drm_device *dev, unsigned long flags)
1110 {
1111         struct drm_i915_private *dev_priv = dev->dev_private;
1112         resource_size_t base, size;
1113         int ret = 0, mmio_bar = IS_I9XX(dev) ? 0 : 1;
1114
1115         /* i915 has 4 more counters */
1116         dev->counters += 4;
1117         dev->types[6] = _DRM_STAT_IRQ;
1118         dev->types[7] = _DRM_STAT_PRIMARY;
1119         dev->types[8] = _DRM_STAT_SECONDARY;
1120         dev->types[9] = _DRM_STAT_DMA;
1121
1122         dev_priv = drm_alloc(sizeof(drm_i915_private_t), DRM_MEM_DRIVER);
1123         if (dev_priv == NULL)
1124                 return -ENOMEM;
1125
1126         memset(dev_priv, 0, sizeof(drm_i915_private_t));
1127
1128         dev->dev_private = (void *)dev_priv;
1129         dev_priv->dev = dev;
1130
1131         /* Add register map (needed for suspend/resume) */
1132         base = drm_get_resource_start(dev, mmio_bar);
1133         size = drm_get_resource_len(dev, mmio_bar);
1134
1135         dev_priv->regs = ioremap(base, size);
1136         if (!dev_priv->regs) {
1137                 DRM_ERROR("failed to map registers\n");
1138                 ret = -EIO;
1139                 goto free_priv;
1140         }
1141
1142         dev_priv->mm.gtt_mapping =
1143                 io_mapping_create_wc(dev->agp->base,
1144                                      dev->agp->agp_info.aper_size * 1024*1024);
1145         if (dev_priv->mm.gtt_mapping == NULL) {
1146                 ret = -EIO;
1147                 goto out_rmmap;
1148         }
1149
1150         /* Set up a WC MTRR for non-PAT systems.  This is more common than
1151          * one would think, because the kernel disables PAT on first
1152          * generation Core chips because WC PAT gets overridden by a UC
1153          * MTRR if present.  Even if a UC MTRR isn't present.
1154          */
1155         dev_priv->mm.gtt_mtrr = mtrr_add(dev->agp->base,
1156                                          dev->agp->agp_info.aper_size *
1157                                          1024 * 1024,
1158                                          MTRR_TYPE_WRCOMB, 1);
1159         if (dev_priv->mm.gtt_mtrr < 0) {
1160                 DRM_INFO("MTRR allocation failed.  Graphics "
1161                          "performance may suffer.\n");
1162         }
1163
1164 #ifdef CONFIG_HIGHMEM64G
1165         /* don't enable GEM on PAE - needs agp + set_memory_* interface fixes */
1166         dev_priv->has_gem = 0;
1167 #else
1168         /* enable GEM by default */
1169         dev_priv->has_gem = 1;
1170 #endif
1171
1172         dev->driver->get_vblank_counter = i915_get_vblank_counter;
1173         dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
1174         if (IS_G4X(dev) || IS_IGDNG(dev)) {
1175                 dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
1176                 dev->driver->get_vblank_counter = gm45_get_vblank_counter;
1177         }
1178
1179         i915_gem_load(dev);
1180
1181         /* Init HWS */
1182         if (!I915_NEED_GFX_HWS(dev)) {
1183                 ret = i915_init_phys_hws(dev);
1184                 if (ret != 0)
1185                         goto out_iomapfree;
1186         }
1187
1188         /* On the 945G/GM, the chipset reports the MSI capability on the
1189          * integrated graphics even though the support isn't actually there
1190          * according to the published specs.  It doesn't appear to function
1191          * correctly in testing on 945G.
1192          * This may be a side effect of MSI having been made available for PEG
1193          * and the registers being closely associated.
1194          *
1195          * According to chipset errata, on the 965GM, MSI interrupts may
1196          * be lost or delayed, but we use them anyways to avoid
1197          * stuck interrupts on some machines.
1198          */
1199         if (!IS_I945G(dev) && !IS_I945GM(dev))
1200                 pci_enable_msi(dev->pdev);
1201
1202         spin_lock_init(&dev_priv->user_irq_lock);
1203         dev_priv->user_irq_refcount = 0;
1204
1205         ret = drm_vblank_init(dev, I915_NUM_PIPE);
1206
1207         if (ret) {
1208                 (void) i915_driver_unload(dev);
1209                 return ret;
1210         }
1211
1212         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1213                 ret = i915_load_modeset_init(dev);
1214                 if (ret < 0) {
1215                         DRM_ERROR("failed to init modeset\n");
1216                         goto out_rmmap;
1217                 }
1218         }
1219
1220         /* Must be done after probing outputs */
1221         /* FIXME: verify on IGDNG */
1222         if (!IS_IGDNG(dev))
1223                 intel_opregion_init(dev, 0);
1224
1225         return 0;
1226
1227 out_iomapfree:
1228         io_mapping_free(dev_priv->mm.gtt_mapping);
1229 out_rmmap:
1230         iounmap(dev_priv->regs);
1231 free_priv:
1232         drm_free(dev_priv, sizeof(struct drm_i915_private), DRM_MEM_DRIVER);
1233         return ret;
1234 }
1235
1236 int i915_driver_unload(struct drm_device *dev)
1237 {
1238         struct drm_i915_private *dev_priv = dev->dev_private;
1239
1240         io_mapping_free(dev_priv->mm.gtt_mapping);
1241         if (dev_priv->mm.gtt_mtrr >= 0) {
1242                 mtrr_del(dev_priv->mm.gtt_mtrr, dev->agp->base,
1243                          dev->agp->agp_info.aper_size * 1024 * 1024);
1244                 dev_priv->mm.gtt_mtrr = -1;
1245         }
1246
1247         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1248                 drm_irq_uninstall(dev);
1249         }
1250
1251         if (dev->pdev->msi_enabled)
1252                 pci_disable_msi(dev->pdev);
1253
1254         if (dev_priv->regs != NULL)
1255                 iounmap(dev_priv->regs);
1256
1257         if (!IS_IGDNG(dev))
1258                 intel_opregion_free(dev, 0);
1259
1260         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1261                 intel_modeset_cleanup(dev);
1262
1263                 i915_gem_free_all_phys_object(dev);
1264
1265                 mutex_lock(&dev->struct_mutex);
1266                 i915_gem_cleanup_ringbuffer(dev);
1267                 mutex_unlock(&dev->struct_mutex);
1268                 drm_mm_takedown(&dev_priv->vram);
1269                 i915_gem_lastclose(dev);
1270         }
1271
1272         drm_free(dev->dev_private, sizeof(drm_i915_private_t),
1273                  DRM_MEM_DRIVER);
1274
1275         return 0;
1276 }
1277
1278 int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv)
1279 {
1280         struct drm_i915_file_private *i915_file_priv;
1281
1282         DRM_DEBUG_DRIVER(I915_DRV, "\n");
1283         i915_file_priv = (struct drm_i915_file_private *)
1284             drm_alloc(sizeof(*i915_file_priv), DRM_MEM_FILES);
1285
1286         if (!i915_file_priv)
1287                 return -ENOMEM;
1288
1289         file_priv->driver_priv = i915_file_priv;
1290
1291         INIT_LIST_HEAD(&i915_file_priv->mm.request_list);
1292
1293         return 0;
1294 }
1295
1296 /**
1297  * i915_driver_lastclose - clean up after all DRM clients have exited
1298  * @dev: DRM device
1299  *
1300  * Take care of cleaning up after all DRM clients have exited.  In the
1301  * mode setting case, we want to restore the kernel's initial mode (just
1302  * in case the last client left us in a bad state).
1303  *
1304  * Additionally, in the non-mode setting case, we'll tear down the AGP
1305  * and DMA structures, since the kernel won't be using them, and clea
1306  * up any GEM state.
1307  */
1308 void i915_driver_lastclose(struct drm_device * dev)
1309 {
1310         drm_i915_private_t *dev_priv = dev->dev_private;
1311
1312         if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) {
1313                 intelfb_restore();
1314                 return;
1315         }
1316
1317         i915_gem_lastclose(dev);
1318
1319         if (dev_priv->agp_heap)
1320                 i915_mem_takedown(&(dev_priv->agp_heap));
1321
1322         i915_dma_cleanup(dev);
1323 }
1324
1325 void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
1326 {
1327         drm_i915_private_t *dev_priv = dev->dev_private;
1328         i915_gem_release(dev, file_priv);
1329         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1330                 i915_mem_release(dev, file_priv, dev_priv->agp_heap);
1331 }
1332
1333 void i915_driver_postclose(struct drm_device *dev, struct drm_file *file_priv)
1334 {
1335         struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv;
1336
1337         drm_free(i915_file_priv, sizeof(*i915_file_priv), DRM_MEM_FILES);
1338 }
1339
1340 struct drm_ioctl_desc i915_ioctls[] = {
1341         DRM_IOCTL_DEF(DRM_I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1342         DRM_IOCTL_DEF(DRM_I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
1343         DRM_IOCTL_DEF(DRM_I915_FLIP, i915_flip_bufs, DRM_AUTH),
1344         DRM_IOCTL_DEF(DRM_I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
1345         DRM_IOCTL_DEF(DRM_I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
1346         DRM_IOCTL_DEF(DRM_I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
1347         DRM_IOCTL_DEF(DRM_I915_GETPARAM, i915_getparam, DRM_AUTH),
1348         DRM_IOCTL_DEF(DRM_I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1349         DRM_IOCTL_DEF(DRM_I915_ALLOC, i915_mem_alloc, DRM_AUTH),
1350         DRM_IOCTL_DEF(DRM_I915_FREE, i915_mem_free, DRM_AUTH),
1351         DRM_IOCTL_DEF(DRM_I915_INIT_HEAP, i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1352         DRM_IOCTL_DEF(DRM_I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
1353         DRM_IOCTL_DEF(DRM_I915_DESTROY_HEAP,  i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
1354         DRM_IOCTL_DEF(DRM_I915_SET_VBLANK_PIPE,  i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
1355         DRM_IOCTL_DEF(DRM_I915_GET_VBLANK_PIPE,  i915_vblank_pipe_get, DRM_AUTH ),
1356         DRM_IOCTL_DEF(DRM_I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
1357         DRM_IOCTL_DEF(DRM_I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1358         DRM_IOCTL_DEF(DRM_I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1359         DRM_IOCTL_DEF(DRM_I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH),
1360         DRM_IOCTL_DEF(DRM_I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
1361         DRM_IOCTL_DEF(DRM_I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
1362         DRM_IOCTL_DEF(DRM_I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH),
1363         DRM_IOCTL_DEF(DRM_I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH),
1364         DRM_IOCTL_DEF(DRM_I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1365         DRM_IOCTL_DEF(DRM_I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1366         DRM_IOCTL_DEF(DRM_I915_GEM_CREATE, i915_gem_create_ioctl, 0),
1367         DRM_IOCTL_DEF(DRM_I915_GEM_PREAD, i915_gem_pread_ioctl, 0),
1368         DRM_IOCTL_DEF(DRM_I915_GEM_PWRITE, i915_gem_pwrite_ioctl, 0),
1369         DRM_IOCTL_DEF(DRM_I915_GEM_MMAP, i915_gem_mmap_ioctl, 0),
1370         DRM_IOCTL_DEF(DRM_I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, 0),
1371         DRM_IOCTL_DEF(DRM_I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, 0),
1372         DRM_IOCTL_DEF(DRM_I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, 0),
1373         DRM_IOCTL_DEF(DRM_I915_GEM_SET_TILING, i915_gem_set_tiling, 0),
1374         DRM_IOCTL_DEF(DRM_I915_GEM_GET_TILING, i915_gem_get_tiling, 0),
1375         DRM_IOCTL_DEF(DRM_I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, 0),
1376         DRM_IOCTL_DEF(DRM_I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, 0),
1377 };
1378
1379 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
1380
1381 /**
1382  * Determine if the device really is AGP or not.
1383  *
1384  * All Intel graphics chipsets are treated as AGP, even if they are really
1385  * PCI-e.
1386  *
1387  * \param dev   The device to be tested.
1388  *
1389  * \returns
1390  * A value of 1 is always retured to indictate every i9x5 is AGP.
1391  */
1392 int i915_driver_device_is_agp(struct drm_device * dev)
1393 {
1394         return 1;
1395 }