drivers/gpu/drm/i810/i810_dma.c

   1 /* i810_dma.c -- DMA support for the i810 -*- linux-c -*-
   2  * Created: Mon Dec 13 01:50:01 1999 by [email protected]
   3  *
   4  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   5  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  25  * DEALINGS IN THE SOFTWARE.
  26  *
  27  * Authors: Rickard E. (Rik) Faith <[email protected]>
  28  *          Jeff Hartmann <[email protected]>
  29  *          Keith Whitwell <[email protected]>
  30  *
  31  */
  32
  33 #include <drm/drmP.h>
  34 #include <drm/i810_drm.h>
  35 #include "i810_drv.h"
  36 #include <linux/interrupt.h>    /* For task queue support */
  37 #include <linux/delay.h>
  38 #include <linux/slab.h>
  39 #include <linux/pagemap.h>
  40
  41 #define I810_BUF_FREE           2
  42 #define I810_BUF_CLIENT         1
  43 #define I810_BUF_HARDWARE       0
  44
  45 #define I810_BUF_UNMAPPED 0
  46 #define I810_BUF_MAPPED   1
  47
  48 static struct drm_buf *i810_freelist_get(struct drm_device * dev)
  49 {
  50         struct drm_device_dma *dma = dev->dma;
  51         int i;
  52         int used;
  53
  54         /* Linear search might not be the best solution */
  55
  56         for (i = 0; i < dma->buf_count; i++) {
  57                 struct drm_buf *buf = dma->buflist[i];
  58                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
  59                 /* In use is already a pointer */
  60                 used = cmpxchg(buf_priv->in_use, I810_BUF_FREE,
  61                                I810_BUF_CLIENT);
  62                 if (used == I810_BUF_FREE)
  63                         return buf;
  64         }
  65         return NULL;
  66 }
  67
  68 /* This should only be called if the buffer is not sent to the hardware
  69  * yet, the hardware updates in use for us once its on the ring buffer.
  70  */
  71
  72 static int i810_freelist_put(struct drm_device *dev, struct drm_buf *buf)
  73 {
  74         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
  75         int used;
  76
  77         /* In use is already a pointer */
  78         used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_FREE);
  79         if (used != I810_BUF_CLIENT) {
  80                 DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx);
  81                 return -EINVAL;
  82         }
  83
  84         return 0;
  85 }
  86
  87 static int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
  88 {
  89         struct drm_file *priv = filp->private_data;
  90         struct drm_device *dev;
  91         drm_i810_private_t *dev_priv;
  92         struct drm_buf *buf;
  93         drm_i810_buf_priv_t *buf_priv;
  94
  95         dev = priv->minor->dev;
  96         dev_priv = dev->dev_private;
  97         buf = dev_priv->mmap_buffer;
  98         buf_priv = buf->dev_private;
  99
 100         vma->vm_flags |= VM_DONTCOPY;
 101
 102         buf_priv->currently_mapped = I810_BUF_MAPPED;
 103
 104         if (io_remap_pfn_range(vma, vma->vm_start,
 105                                vma->vm_pgoff,
 106                                vma->vm_end - vma->vm_start, vma->vm_page_prot))
 107                 return -EAGAIN;
 108         return 0;
 109 }
 110
 111 static const struct file_operations i810_buffer_fops = {
 112         .open = drm_open,
 113         .release = drm_release,
 114         .unlocked_ioctl = drm_ioctl,
 115         .mmap = i810_mmap_buffers,
 116 #ifdef CONFIG_COMPAT
 117         .compat_ioctl = drm_compat_ioctl,
 118 #endif
 119         .llseek = noop_llseek,
 120 };
 121
 122 static int i810_map_buffer(struct drm_buf *buf, struct drm_file *file_priv)
 123 {
 124         struct drm_device *dev = file_priv->minor->dev;
 125         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 126         drm_i810_private_t *dev_priv = dev->dev_private;
 127         const struct file_operations *old_fops;
 128         int retcode = 0;
 129
 130         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
 131                 return -EINVAL;
 132
 133         /* This is all entirely broken */
 134         old_fops = file_priv->filp->f_op;
 135         file_priv->filp->f_op = &i810_buffer_fops;
 136         dev_priv->mmap_buffer = buf;
 137         buf_priv->virtual = (void *)vm_mmap(file_priv->filp, 0, buf->total,
 138                                             PROT_READ | PROT_WRITE,
 139                                             MAP_SHARED, buf->bus_address);
 140         dev_priv->mmap_buffer = NULL;
 141         file_priv->filp->f_op = old_fops;
 142         if (IS_ERR(buf_priv->virtual)) {
 143                 /* Real error */
 144                 DRM_ERROR("mmap error\n");
 145                 retcode = PTR_ERR(buf_priv->virtual);
 146                 buf_priv->virtual = NULL;
 147         }
 148
 149         return retcode;
 150 }
 151
 152 static int i810_unmap_buffer(struct drm_buf *buf)
 153 {
 154         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 155         int retcode = 0;
 156
 157         if (buf_priv->currently_mapped != I810_BUF_MAPPED)
 158                 return -EINVAL;
 159
 160         retcode = vm_munmap((unsigned long)buf_priv->virtual,
 161                             (size_t) buf->total);
 162
 163         buf_priv->currently_mapped = I810_BUF_UNMAPPED;
 164         buf_priv->virtual = NULL;
 165
 166         return retcode;
 167 }
 168
 169 static int i810_dma_get_buffer(struct drm_device *dev, drm_i810_dma_t *d,
 170                                struct drm_file *file_priv)
 171 {
 172         struct drm_buf *buf;
 173         drm_i810_buf_priv_t *buf_priv;
 174         int retcode = 0;
 175
 176         buf = i810_freelist_get(dev);
 177         if (!buf) {
 178                 retcode = -ENOMEM;
 179                 DRM_DEBUG("retcode=%d\n", retcode);
 180                 return retcode;
 181         }
 182
 183         retcode = i810_map_buffer(buf, file_priv);
 184         if (retcode) {
 185                 i810_freelist_put(dev, buf);
 186                 DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
 187                 return retcode;
 188         }
 189         buf->file_priv = file_priv;
 190         buf_priv = buf->dev_private;
 191         d->granted = 1;
 192         d->request_idx = buf->idx;
 193         d->request_size = buf->total;
 194         d->virtual = buf_priv->virtual;
 195
 196         return retcode;
 197 }
 198
 199 static int i810_dma_cleanup(struct drm_device *dev)
 200 {
 201         struct drm_device_dma *dma = dev->dma;
 202
 203         /* Make sure interrupts are disabled here because the uninstall ioctl
 204          * may not have been called from userspace and after dev_private
 205          * is freed, it's too late.
 206          */
 207         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ) && dev->irq_enabled)
 208                 drm_irq_uninstall(dev);
 209
 210         if (dev->dev_private) {
 211                 int i;
 212                 drm_i810_private_t *dev_priv =
 213                     (drm_i810_private_t *) dev->dev_private;
 214
 215                 if (dev_priv->ring.virtual_start)
 216                         drm_legacy_ioremapfree(&dev_priv->ring.map, dev);
 217                 if (dev_priv->hw_status_page) {
 218                         pci_free_consistent(dev->pdev, PAGE_SIZE,
 219                                             dev_priv->hw_status_page,
 220                                             dev_priv->dma_status_page);
 221                 }
 222                 kfree(dev->dev_private);
 223                 dev->dev_private = NULL;
 224
 225                 for (i = 0; i < dma->buf_count; i++) {
 226                         struct drm_buf *buf = dma->buflist[i];
 227                         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 228
 229                         if (buf_priv->kernel_virtual && buf->total)
 230                                 drm_legacy_ioremapfree(&buf_priv->map, dev);
 231                 }
 232         }
 233         return 0;
 234 }
 235
 236 static int i810_wait_ring(struct drm_device *dev, int n)
 237 {
 238         drm_i810_private_t *dev_priv = dev->dev_private;
 239         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
 240         int iters = 0;
 241         unsigned long end;
 242         unsigned int last_head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 243
 244         end = jiffies + (HZ * 3);
 245         while (ring->space < n) {
 246                 ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 247                 ring->space = ring->head - (ring->tail + 8);
 248                 if (ring->space < 0)
 249                         ring->space += ring->Size;
 250
 251                 if (ring->head != last_head) {
 252                         end = jiffies + (HZ * 3);
 253                         last_head = ring->head;
 254                 }
 255
 256                 iters++;
 257                 if (time_before(end, jiffies)) {
 258                         DRM_ERROR("space: %d wanted %d\n", ring->space, n);
 259                         DRM_ERROR("lockup\n");
 260                         goto out_wait_ring;
 261                 }
 262                 udelay(1);
 263         }
 264
 265 out_wait_ring:
 266         return iters;
 267 }
 268
 269 static void i810_kernel_lost_context(struct drm_device *dev)
 270 {
 271         drm_i810_private_t *dev_priv = dev->dev_private;
 272         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
 273
 274         ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 275         ring->tail = I810_READ(LP_RING + RING_TAIL);
 276         ring->space = ring->head - (ring->tail + 8);
 277         if (ring->space < 0)
 278                 ring->space += ring->Size;
 279 }
 280
 281 static int i810_freelist_init(struct drm_device *dev, drm_i810_private_t *dev_priv)
 282 {
 283         struct drm_device_dma *dma = dev->dma;
 284         int my_idx = 24;
 285         u32 *hw_status = (u32 *) (dev_priv->hw_status_page + my_idx);
 286         int i;
 287
 288         if (dma->buf_count > 1019) {
 289                 /* Not enough space in the status page for the freelist */
 290                 return -EINVAL;
 291         }
 292
 293         for (i = 0; i < dma->buf_count; i++) {
 294                 struct drm_buf *buf = dma->buflist[i];
 295                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 296
 297                 buf_priv->in_use = hw_status++;
 298                 buf_priv->my_use_idx = my_idx;
 299                 my_idx += 4;
 300
 301                 *buf_priv->in_use = I810_BUF_FREE;
 302
 303                 buf_priv->map.offset = buf->bus_address;
 304                 buf_priv->map.size = buf->total;
 305                 buf_priv->map.type = _DRM_AGP;
 306                 buf_priv->map.flags = 0;
 307                 buf_priv->map.mtrr = 0;
 308
 309                 drm_legacy_ioremap(&buf_priv->map, dev);
 310                 buf_priv->kernel_virtual = buf_priv->map.handle;
 311
 312         }
 313         return 0;
 314 }
 315
 316 static int i810_dma_initialize(struct drm_device *dev,
 317                                drm_i810_private_t *dev_priv,
 318                                drm_i810_init_t *init)
 319 {
 320         struct drm_map_list *r_list;
 321         memset(dev_priv, 0, sizeof(drm_i810_private_t));
 322
 323         list_for_each_entry(r_list, &dev->maplist, head) {
 324                 if (r_list->map &&
 325                     r_list->map->type == _DRM_SHM &&
 326                     r_list->map->flags & _DRM_CONTAINS_LOCK) {
 327                         dev_priv->sarea_map = r_list->map;
 328                         break;
 329                 }
 330         }
 331         if (!dev_priv->sarea_map) {
 332                 dev->dev_private = (void *)dev_priv;
 333                 i810_dma_cleanup(dev);
 334                 DRM_ERROR("can not find sarea!\n");
 335                 return -EINVAL;
 336         }
 337         dev_priv->mmio_map = drm_legacy_findmap(dev, init->mmio_offset);
 338         if (!dev_priv->mmio_map) {
 339                 dev->dev_private = (void *)dev_priv;
 340                 i810_dma_cleanup(dev);
 341                 DRM_ERROR("can not find mmio map!\n");
 342                 return -EINVAL;
 343         }
 344         dev->agp_buffer_token = init->buffers_offset;
 345         dev->agp_buffer_map = drm_legacy_findmap(dev, init->buffers_offset);
 346         if (!dev->agp_buffer_map) {
 347                 dev->dev_private = (void *)dev_priv;
 348                 i810_dma_cleanup(dev);
 349                 DRM_ERROR("can not find dma buffer map!\n");
 350                 return -EINVAL;
 351         }
 352
 353         dev_priv->sarea_priv = (drm_i810_sarea_t *)
 354             ((u8 *) dev_priv->sarea_map->handle + init->sarea_priv_offset);
 355
 356         dev_priv->ring.Start = init->ring_start;
 357         dev_priv->ring.End = init->ring_end;
 358         dev_priv->ring.Size = init->ring_size;
 359
 360         dev_priv->ring.map.offset = dev->agp->base + init->ring_start;
 361         dev_priv->ring.map.size = init->ring_size;
 362         dev_priv->ring.map.type = _DRM_AGP;
 363         dev_priv->ring.map.flags = 0;
 364         dev_priv->ring.map.mtrr = 0;
 365
 366         drm_legacy_ioremap(&dev_priv->ring.map, dev);
 367
 368         if (dev_priv->ring.map.handle == NULL) {
 369                 dev->dev_private = (void *)dev_priv;
 370                 i810_dma_cleanup(dev);
 371                 DRM_ERROR("can not ioremap virtual address for"
 372                           " ring buffer\n");
 373                 return -ENOMEM;
 374         }
 375
 376         dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
 377
 378         dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
 379
 380         dev_priv->w = init->w;
 381         dev_priv->h = init->h;
 382         dev_priv->pitch = init->pitch;
 383         dev_priv->back_offset = init->back_offset;
 384         dev_priv->depth_offset = init->depth_offset;
 385         dev_priv->front_offset = init->front_offset;
 386
 387         dev_priv->overlay_offset = init->overlay_offset;
 388         dev_priv->overlay_physical = init->overlay_physical;
 389
 390         dev_priv->front_di1 = init->front_offset | init->pitch_bits;
 391         dev_priv->back_di1 = init->back_offset | init->pitch_bits;
 392         dev_priv->zi1 = init->depth_offset | init->pitch_bits;
 393
 394         /* Program Hardware Status Page */
 395         dev_priv->hw_status_page =
 396                 pci_zalloc_consistent(dev->pdev, PAGE_SIZE,
 397                                       &dev_priv->dma_status_page);
 398         if (!dev_priv->hw_status_page) {
 399                 dev->dev_private = (void *)dev_priv;
 400                 i810_dma_cleanup(dev);
 401                 DRM_ERROR("Can not allocate hardware status page\n");
 402                 return -ENOMEM;
 403         }
 404         DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
 405
 406         I810_WRITE(0x02080, dev_priv->dma_status_page);
 407         DRM_DEBUG("Enabled hardware status page\n");
 408
 409         /* Now we need to init our freelist */
 410         if (i810_freelist_init(dev, dev_priv) != 0) {
 411                 dev->dev_private = (void *)dev_priv;
 412                 i810_dma_cleanup(dev);
 413                 DRM_ERROR("Not enough space in the status page for"
 414                           " the freelist\n");
 415                 return -ENOMEM;
 416         }
 417         dev->dev_private = (void *)dev_priv;
 418
 419         return 0;
 420 }
 421
 422 static int i810_dma_init(struct drm_device *dev, void *data,
 423                          struct drm_file *file_priv)
 424 {
 425         drm_i810_private_t *dev_priv;
 426         drm_i810_init_t *init = data;
 427         int retcode = 0;
 428
 429         switch (init->func) {
 430         case I810_INIT_DMA_1_4:
 431                 DRM_INFO("Using v1.4 init.\n");
 432                 dev_priv = kmalloc(sizeof(drm_i810_private_t), GFP_KERNEL);
 433                 if (dev_priv == NULL)
 434                         return -ENOMEM;
 435                 retcode = i810_dma_initialize(dev, dev_priv, init);
 436                 break;
 437
 438         case I810_CLEANUP_DMA:
 439                 DRM_INFO("DMA Cleanup\n");
 440                 retcode = i810_dma_cleanup(dev);
 441                 break;
 442         default:
 443                 return -EINVAL;
 444         }
 445
 446         return retcode;
 447 }
 448
 449 /* Most efficient way to verify state for the i810 is as it is
 450  * emitted.  Non-conformant state is silently dropped.
 451  *
 452  * Use 'volatile' & local var tmp to force the emitted values to be
 453  * identical to the verified ones.
 454  */
 455 static void i810EmitContextVerified(struct drm_device *dev,
 456                                     volatile unsigned int *code)
 457 {
 458         drm_i810_private_t *dev_priv = dev->dev_private;
 459         int i, j = 0;
 460         unsigned int tmp;
 461         RING_LOCALS;
 462
 463         BEGIN_LP_RING(I810_CTX_SETUP_SIZE);
 464
 465         OUT_RING(GFX_OP_COLOR_FACTOR);
 466         OUT_RING(code[I810_CTXREG_CF1]);
 467
 468         OUT_RING(GFX_OP_STIPPLE);
 469         OUT_RING(code[I810_CTXREG_ST1]);
 470
 471         for (i = 4; i < I810_CTX_SETUP_SIZE; i++) {
 472                 tmp = code[i];
 473
 474                 if ((tmp & (7 << 29)) == (3 << 29) &&
 475                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
 476                         OUT_RING(tmp);
 477                         j++;
 478                 } else
 479                         printk("constext state dropped!!!\n");
 480         }
 481
 482         if (j & 1)
 483                 OUT_RING(0);
 484
 485         ADVANCE_LP_RING();
 486 }
 487
 488 static void i810EmitTexVerified(struct drm_device *dev, volatile unsigned int *code)
 489 {
 490         drm_i810_private_t *dev_priv = dev->dev_private;
 491         int i, j = 0;
 492         unsigned int tmp;
 493         RING_LOCALS;
 494
 495         BEGIN_LP_RING(I810_TEX_SETUP_SIZE);
 496
 497         OUT_RING(GFX_OP_MAP_INFO);
 498         OUT_RING(code[I810_TEXREG_MI1]);
 499         OUT_RING(code[I810_TEXREG_MI2]);
 500         OUT_RING(code[I810_TEXREG_MI3]);
 501
 502         for (i = 4; i < I810_TEX_SETUP_SIZE; i++) {
 503                 tmp = code[i];
 504
 505                 if ((tmp & (7 << 29)) == (3 << 29) &&
 506                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
 507                         OUT_RING(tmp);
 508                         j++;
 509                 } else
 510                         printk("texture state dropped!!!\n");
 511         }
 512
 513         if (j & 1)
 514                 OUT_RING(0);
 515
 516         ADVANCE_LP_RING();
 517 }
 518
 519 /* Need to do some additional checking when setting the dest buffer.
 520  */
 521 static void i810EmitDestVerified(struct drm_device *dev,
 522                                  volatile unsigned int *code)
 523 {
 524         drm_i810_private_t *dev_priv = dev->dev_private;
 525         unsigned int tmp;
 526         RING_LOCALS;
 527
 528         BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
 529
 530         tmp = code[I810_DESTREG_DI1];
 531         if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
 532                 OUT_RING(CMD_OP_DESTBUFFER_INFO);
 533                 OUT_RING(tmp);
 534         } else
 535                 DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
 536                           tmp, dev_priv->front_di1, dev_priv->back_di1);
 537
 538         /* invarient:
 539          */
 540         OUT_RING(CMD_OP_Z_BUFFER_INFO);
 541         OUT_RING(dev_priv->zi1);
 542
 543         OUT_RING(GFX_OP_DESTBUFFER_VARS);
 544         OUT_RING(code[I810_DESTREG_DV1]);
 545
 546         OUT_RING(GFX_OP_DRAWRECT_INFO);
 547         OUT_RING(code[I810_DESTREG_DR1]);
 548         OUT_RING(code[I810_DESTREG_DR2]);
 549         OUT_RING(code[I810_DESTREG_DR3]);
 550         OUT_RING(code[I810_DESTREG_DR4]);
 551         OUT_RING(0);
 552
 553         ADVANCE_LP_RING();
 554 }
 555
 556 static void i810EmitState(struct drm_device *dev)
 557 {
 558         drm_i810_private_t *dev_priv = dev->dev_private;
 559         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 560         unsigned int dirty = sarea_priv->dirty;
 561
 562         DRM_DEBUG("%x\n", dirty);
 563
 564         if (dirty & I810_UPLOAD_BUFFERS) {
 565                 i810EmitDestVerified(dev, sarea_priv->BufferState);
 566                 sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
 567         }
 568
 569         if (dirty & I810_UPLOAD_CTX) {
 570                 i810EmitContextVerified(dev, sarea_priv->ContextState);
 571                 sarea_priv->dirty &= ~I810_UPLOAD_CTX;
 572         }
 573
 574         if (dirty & I810_UPLOAD_TEX0) {
 575                 i810EmitTexVerified(dev, sarea_priv->TexState[0]);
 576                 sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
 577         }
 578
 579         if (dirty & I810_UPLOAD_TEX1) {
 580                 i810EmitTexVerified(dev, sarea_priv->TexState[1]);
 581                 sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
 582         }
 583 }
 584
 585 /* need to verify
 586  */
 587 static void i810_dma_dispatch_clear(struct drm_device *dev, int flags,
 588                                     unsigned int clear_color,
 589                                     unsigned int clear_zval)
 590 {
 591         drm_i810_private_t *dev_priv = dev->dev_private;
 592         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 593         int nbox = sarea_priv->nbox;
 594         struct drm_clip_rect *pbox = sarea_priv->boxes;
 595         int pitch = dev_priv->pitch;
 596         int cpp = 2;
 597         int i;
 598         RING_LOCALS;
 599
 600         if (dev_priv->current_page == 1) {
 601                 unsigned int tmp = flags;
 602
 603                 flags &= ~(I810_FRONT | I810_BACK);
 604                 if (tmp & I810_FRONT)
 605                         flags |= I810_BACK;
 606                 if (tmp & I810_BACK)
 607                         flags |= I810_FRONT;
 608         }
 609
 610         i810_kernel_lost_context(dev);
 611
 612         if (nbox > I810_NR_SAREA_CLIPRECTS)
 613                 nbox = I810_NR_SAREA_CLIPRECTS;
 614
 615         for (i = 0; i < nbox; i++, pbox++) {
 616                 unsigned int x = pbox->x1;
 617                 unsigned int y = pbox->y1;
 618                 unsigned int width = (pbox->x2 - x) * cpp;
 619                 unsigned int height = pbox->y2 - y;
 620                 unsigned int start = y * pitch + x * cpp;
 621
 622                 if (pbox->x1 > pbox->x2 ||
 623                     pbox->y1 > pbox->y2 ||
 624                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
 625                         continue;
 626
 627                 if (flags & I810_FRONT) {
 628                         BEGIN_LP_RING(6);
 629                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
 630                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
 631                         OUT_RING((height << 16) | width);
 632                         OUT_RING(start);
 633                         OUT_RING(clear_color);
 634                         OUT_RING(0);
 635                         ADVANCE_LP_RING();
 636                 }
 637
 638                 if (flags & I810_BACK) {
 639                         BEGIN_LP_RING(6);
 640                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
 641                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
 642                         OUT_RING((height << 16) | width);
 643                         OUT_RING(dev_priv->back_offset + start);
 644                         OUT_RING(clear_color);
 645                         OUT_RING(0);
 646                         ADVANCE_LP_RING();
 647                 }
 648
 649                 if (flags & I810_DEPTH) {
 650                         BEGIN_LP_RING(6);
 651                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
 652                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
 653                         OUT_RING((height << 16) | width);
 654                         OUT_RING(dev_priv->depth_offset + start);
 655                         OUT_RING(clear_zval);
 656                         OUT_RING(0);
 657                         ADVANCE_LP_RING();
 658                 }
 659         }
 660 }
 661
 662 static void i810_dma_dispatch_swap(struct drm_device *dev)
 663 {
 664         drm_i810_private_t *dev_priv = dev->dev_private;
 665         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 666         int nbox = sarea_priv->nbox;
 667         struct drm_clip_rect *pbox = sarea_priv->boxes;
 668         int pitch = dev_priv->pitch;
 669         int cpp = 2;
 670         int i;
 671         RING_LOCALS;
 672
 673         DRM_DEBUG("swapbuffers\n");
 674
 675         i810_kernel_lost_context(dev);
 676
 677         if (nbox > I810_NR_SAREA_CLIPRECTS)
 678                 nbox = I810_NR_SAREA_CLIPRECTS;
 679
 680         for (i = 0; i < nbox; i++, pbox++) {
 681                 unsigned int w = pbox->x2 - pbox->x1;
 682                 unsigned int h = pbox->y2 - pbox->y1;
 683                 unsigned int dst = pbox->x1 * cpp + pbox->y1 * pitch;
 684                 unsigned int start = dst;
 685
 686                 if (pbox->x1 > pbox->x2 ||
 687                     pbox->y1 > pbox->y2 ||
 688                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
 689                         continue;
 690
 691                 BEGIN_LP_RING(6);
 692                 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4);
 693                 OUT_RING(pitch | (0xCC << 16));
 694                 OUT_RING((h << 16) | (w * cpp));
 695                 if (dev_priv->current_page == 0)
 696                         OUT_RING(dev_priv->front_offset + start);
 697                 else
 698                         OUT_RING(dev_priv->back_offset + start);
 699                 OUT_RING(pitch);
 700                 if (dev_priv->current_page == 0)
 701                         OUT_RING(dev_priv->back_offset + start);
 702                 else
 703                         OUT_RING(dev_priv->front_offset + start);
 704                 ADVANCE_LP_RING();
 705         }
 706 }
 707
 708 static void i810_dma_dispatch_vertex(struct drm_device *dev,
 709                                      struct drm_buf *buf, int discard, int used)
 710 {
 711         drm_i810_private_t *dev_priv = dev->dev_private;
 712         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 713         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 714         struct drm_clip_rect *box = sarea_priv->boxes;
 715         int nbox = sarea_priv->nbox;
 716         unsigned long address = (unsigned long)buf->bus_address;
 717         unsigned long start = address - dev->agp->base;
 718         int i = 0;
 719         RING_LOCALS;
 720
 721         i810_kernel_lost_context(dev);
 722
 723         if (nbox > I810_NR_SAREA_CLIPRECTS)
 724                 nbox = I810_NR_SAREA_CLIPRECTS;
 725
 726         if (used > 4 * 1024)
 727                 used = 0;
 728
 729         if (sarea_priv->dirty)
 730                 i810EmitState(dev);
 731
 732         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
 733                 unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
 734
 735                 *(u32 *) buf_priv->kernel_virtual =
 736                     ((GFX_OP_PRIMITIVE | prim | ((used / 4) - 2)));
 737
 738                 if (used & 4) {
 739                         *(u32 *) ((char *) buf_priv->kernel_virtual + used) = 0;
 740                         used += 4;
 741                 }
 742
 743                 i810_unmap_buffer(buf);
 744         }
 745
 746         if (used) {
 747                 do {
 748                         if (i < nbox) {
 749                                 BEGIN_LP_RING(4);
 750                                 OUT_RING(GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
 751                                          SC_ENABLE);
 752                                 OUT_RING(GFX_OP_SCISSOR_INFO);
 753                                 OUT_RING(box[i].x1 | (box[i].y1 << 16));
 754                                 OUT_RING((box[i].x2 -
 755                                           1) | ((box[i].y2 - 1) << 16));
 756                                 ADVANCE_LP_RING();
 757                         }
 758
 759                         BEGIN_LP_RING(4);
 760                         OUT_RING(CMD_OP_BATCH_BUFFER);
 761                         OUT_RING(start | BB1_PROTECTED);
 762                         OUT_RING(start + used - 4);
 763                         OUT_RING(0);
 764                         ADVANCE_LP_RING();
 765
 766                 } while (++i < nbox);
 767         }
 768
 769         if (discard) {
 770                 dev_priv->counter++;
 771
 772                 (void)cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
 773                               I810_BUF_HARDWARE);
 774
 775                 BEGIN_LP_RING(8);
 776                 OUT_RING(CMD_STORE_DWORD_IDX);
 777                 OUT_RING(20);
 778                 OUT_RING(dev_priv->counter);
 779                 OUT_RING(CMD_STORE_DWORD_IDX);
 780                 OUT_RING(buf_priv->my_use_idx);
 781                 OUT_RING(I810_BUF_FREE);
 782                 OUT_RING(CMD_REPORT_HEAD);
 783                 OUT_RING(0);
 784                 ADVANCE_LP_RING();
 785         }
 786 }
 787
 788 static void i810_dma_dispatch_flip(struct drm_device *dev)
 789 {
 790         drm_i810_private_t *dev_priv = dev->dev_private;
 791         int pitch = dev_priv->pitch;
 792         RING_LOCALS;
 793
 794         DRM_DEBUG("page=%d pfCurrentPage=%d\n",
 795                   dev_priv->current_page,
 796                   dev_priv->sarea_priv->pf_current_page);
 797
 798         i810_kernel_lost_context(dev);
 799
 800         BEGIN_LP_RING(2);
 801         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
 802         OUT_RING(0);
 803         ADVANCE_LP_RING();
 804
 805         BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
 806         /* On i815 at least ASYNC is buggy */
 807         /* pitch<<5 is from 11.2.8 p158,
 808            its the pitch / 8 then left shifted 8,
 809            so (pitch >> 3) << 8 */
 810         OUT_RING(CMD_OP_FRONTBUFFER_INFO | (pitch << 5) /*| ASYNC_FLIP */ );
 811         if (dev_priv->current_page == 0) {
 812                 OUT_RING(dev_priv->back_offset);
 813                 dev_priv->current_page = 1;
 814         } else {
 815                 OUT_RING(dev_priv->front_offset);
 816                 dev_priv->current_page = 0;
 817         }
 818         OUT_RING(0);
 819         ADVANCE_LP_RING();
 820
 821         BEGIN_LP_RING(2);
 822         OUT_RING(CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP);
 823         OUT_RING(0);
 824         ADVANCE_LP_RING();
 825
 826         /* Increment the frame counter.  The client-side 3D driver must
 827          * throttle the framerate by waiting for this value before
 828          * performing the swapbuffer ioctl.
 829          */
 830         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
 831
 832 }
 833
 834 static void i810_dma_quiescent(struct drm_device *dev)
 835 {
 836         drm_i810_private_t *dev_priv = dev->dev_private;
 837         RING_LOCALS;
 838
 839         i810_kernel_lost_context(dev);
 840
 841         BEGIN_LP_RING(4);
 842         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
 843         OUT_RING(CMD_REPORT_HEAD);
 844         OUT_RING(0);
 845         OUT_RING(0);
 846         ADVANCE_LP_RING();
 847
 848         i810_wait_ring(dev, dev_priv->ring.Size - 8);
 849 }
 850
 851 static int i810_flush_queue(struct drm_device *dev)
 852 {
 853         drm_i810_private_t *dev_priv = dev->dev_private;
 854         struct drm_device_dma *dma = dev->dma;
 855         int i, ret = 0;
 856         RING_LOCALS;
 857
 858         i810_kernel_lost_context(dev);
 859
 860         BEGIN_LP_RING(2);
 861         OUT_RING(CMD_REPORT_HEAD);
 862         OUT_RING(0);
 863         ADVANCE_LP_RING();
 864
 865         i810_wait_ring(dev, dev_priv->ring.Size - 8);
 866
 867         for (i = 0; i < dma->buf_count; i++) {
 868                 struct drm_buf *buf = dma->buflist[i];
 869                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 870
 871                 int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
 872                                    I810_BUF_FREE);
 873
 874                 if (used == I810_BUF_HARDWARE)
 875                         DRM_DEBUG("reclaimed from HARDWARE\n");
 876                 if (used == I810_BUF_CLIENT)
 877                         DRM_DEBUG("still on client\n");
 878         }
 879
 880         return ret;
 881 }
 882
 883 /* Must be called with the lock held */
 884 void i810_driver_reclaim_buffers(struct drm_device *dev,
 885                                  struct drm_file *file_priv)
 886 {
 887         struct drm_device_dma *dma = dev->dma;
 888         int i;
 889
 890         if (!dma)
 891                 return;
 892         if (!dev->dev_private)
 893                 return;
 894         if (!dma->buflist)
 895                 return;
 896
 897         i810_flush_queue(dev);
 898
 899         for (i = 0; i < dma->buf_count; i++) {
 900                 struct drm_buf *buf = dma->buflist[i];
 901                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 902
 903                 if (buf->file_priv == file_priv && buf_priv) {
 904                         int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
 905                                            I810_BUF_FREE);
 906
 907                         if (used == I810_BUF_CLIENT)
 908                                 DRM_DEBUG("reclaimed from client\n");
 909                         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
 910                                 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
 911                 }
 912         }
 913 }
 914
 915 static int i810_flush_ioctl(struct drm_device *dev, void *data,
 916                             struct drm_file *file_priv)
 917 {
 918         LOCK_TEST_WITH_RETURN(dev, file_priv);
 919
 920         i810_flush_queue(dev);
 921         return 0;
 922 }
 923
 924 static int i810_dma_vertex(struct drm_device *dev, void *data,
 925                            struct drm_file *file_priv)
 926 {
 927         struct drm_device_dma *dma = dev->dma;
 928         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
 929         u32 *hw_status = dev_priv->hw_status_page;
 930         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
 931             dev_priv->sarea_priv;
 932         drm_i810_vertex_t *vertex = data;
 933
 934         LOCK_TEST_WITH_RETURN(dev, file_priv);
 935
 936         DRM_DEBUG("idx %d used %d discard %d\n",
 937                   vertex->idx, vertex->used, vertex->discard);
 938
 939         if (vertex->idx < 0 || vertex->idx > dma->buf_count)
 940                 return -EINVAL;
 941
 942         i810_dma_dispatch_vertex(dev,
 943                                  dma->buflist[vertex->idx],
 944                                  vertex->discard, vertex->used);
 945
 946         sarea_priv->last_enqueue = dev_priv->counter - 1;
 947         sarea_priv->last_dispatch = (int)hw_status[5];
 948
 949         return 0;
 950 }
 951
 952 static int i810_clear_bufs(struct drm_device *dev, void *data,
 953                            struct drm_file *file_priv)
 954 {
 955         drm_i810_clear_t *clear = data;
 956
 957         LOCK_TEST_WITH_RETURN(dev, file_priv);
 958
 959         /* GH: Someone's doing nasty things... */
 960         if (!dev->dev_private)
 961                 return -EINVAL;
 962
 963         i810_dma_dispatch_clear(dev, clear->flags,
 964                                 clear->clear_color, clear->clear_depth);
 965         return 0;
 966 }
 967
 968 static int i810_swap_bufs(struct drm_device *dev, void *data,
 969                           struct drm_file *file_priv)
 970 {
 971         DRM_DEBUG("\n");
 972
 973         LOCK_TEST_WITH_RETURN(dev, file_priv);
 974
 975         i810_dma_dispatch_swap(dev);
 976         return 0;
 977 }
 978
 979 static int i810_getage(struct drm_device *dev, void *data,
 980                        struct drm_file *file_priv)
 981 {
 982         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
 983         u32 *hw_status = dev_priv->hw_status_page;
 984         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
 985             dev_priv->sarea_priv;
 986
 987         sarea_priv->last_dispatch = (int)hw_status[5];
 988         return 0;
 989 }
 990
 991 static int i810_getbuf(struct drm_device *dev, void *data,
 992                        struct drm_file *file_priv)
 993 {
 994         int retcode = 0;
 995         drm_i810_dma_t *d = data;
 996         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
 997         u32 *hw_status = dev_priv->hw_status_page;
 998         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
 999             dev_priv->sarea_priv;
1000
1001         LOCK_TEST_WITH_RETURN(dev, file_priv);
1002
1003         d->granted = 0;
1004
1005         retcode = i810_dma_get_buffer(dev, d, file_priv);
1006
1007         DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
1008                   task_pid_nr(current), retcode, d->granted);
1009
1010         sarea_priv->last_dispatch = (int)hw_status[5];
1011
1012         return retcode;
1013 }
1014
1015 static int i810_copybuf(struct drm_device *dev, void *data,
1016                         struct drm_file *file_priv)
1017 {
1018         /* Never copy - 2.4.x doesn't need it */
1019         return 0;
1020 }
1021
1022 static int i810_docopy(struct drm_device *dev, void *data,
1023                         struct drm_file *file_priv)
1024 {
1025         /* Never copy - 2.4.x doesn't need it */
1026         return 0;
1027 }
1028
1029 static void i810_dma_dispatch_mc(struct drm_device *dev, struct drm_buf *buf, int used,
1030                                  unsigned int last_render)
1031 {
1032         drm_i810_private_t *dev_priv = dev->dev_private;
1033         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
1034         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
1035         unsigned long address = (unsigned long)buf->bus_address;
1036         unsigned long start = address - dev->agp->base;
1037         int u;
1038         RING_LOCALS;
1039
1040         i810_kernel_lost_context(dev);
1041
1042         u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_HARDWARE);
1043         if (u != I810_BUF_CLIENT)
1044                 DRM_DEBUG("MC found buffer that isn't mine!\n");
1045
1046         if (used > 4 * 1024)
1047                 used = 0;
1048
1049         sarea_priv->dirty = 0x7f;
1050
1051         DRM_DEBUG("addr 0x%lx, used 0x%x\n", address, used);
1052
1053         dev_priv->counter++;
1054         DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1055         DRM_DEBUG("start : %lx\n", start);
1056         DRM_DEBUG("used : %d\n", used);
1057         DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1058
1059         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
1060                 if (used & 4) {
1061                         *(u32 *) ((char *) buf_priv->virtual + used) = 0;
1062                         used += 4;
1063                 }
1064
1065                 i810_unmap_buffer(buf);
1066         }
1067         BEGIN_LP_RING(4);
1068         OUT_RING(CMD_OP_BATCH_BUFFER);
1069         OUT_RING(start | BB1_PROTECTED);
1070         OUT_RING(start + used - 4);
1071         OUT_RING(0);
1072         ADVANCE_LP_RING();
1073
1074         BEGIN_LP_RING(8);
1075         OUT_RING(CMD_STORE_DWORD_IDX);
1076         OUT_RING(buf_priv->my_use_idx);
1077         OUT_RING(I810_BUF_FREE);
1078         OUT_RING(0);
1079
1080         OUT_RING(CMD_STORE_DWORD_IDX);
1081         OUT_RING(16);
1082         OUT_RING(last_render);
1083         OUT_RING(0);
1084         ADVANCE_LP_RING();
1085 }
1086
1087 static int i810_dma_mc(struct drm_device *dev, void *data,
1088                        struct drm_file *file_priv)
1089 {
1090         struct drm_device_dma *dma = dev->dma;
1091         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1092         u32 *hw_status = dev_priv->hw_status_page;
1093         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1094             dev_priv->sarea_priv;
1095         drm_i810_mc_t *mc = data;
1096
1097         LOCK_TEST_WITH_RETURN(dev, file_priv);
1098
1099         if (mc->idx >= dma->buf_count || mc->idx < 0)
1100                 return -EINVAL;
1101
1102         i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used,
1103                              mc->last_render);
1104
1105         sarea_priv->last_enqueue = dev_priv->counter - 1;
1106         sarea_priv->last_dispatch = (int)hw_status[5];
1107
1108         return 0;
1109 }
1110
1111 static int i810_rstatus(struct drm_device *dev, void *data,
1112                         struct drm_file *file_priv)
1113 {
1114         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1115
1116         return (int)(((u32 *) (dev_priv->hw_status_page))[4]);
1117 }
1118
1119 static int i810_ov0_info(struct drm_device *dev, void *data,
1120                          struct drm_file *file_priv)
1121 {
1122         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1123         drm_i810_overlay_t *ov = data;
1124
1125         ov->offset = dev_priv->overlay_offset;
1126         ov->physical = dev_priv->overlay_physical;
1127
1128         return 0;
1129 }
1130
1131 static int i810_fstatus(struct drm_device *dev, void *data,
1132                         struct drm_file *file_priv)
1133 {
1134         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1135
1136         LOCK_TEST_WITH_RETURN(dev, file_priv);
1137         return I810_READ(0x30008);
1138 }
1139
1140 static int i810_ov0_flip(struct drm_device *dev, void *data,
1141                          struct drm_file *file_priv)
1142 {
1143         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1144
1145         LOCK_TEST_WITH_RETURN(dev, file_priv);
1146
1147         /* Tell the overlay to update */
1148         I810_WRITE(0x30000, dev_priv->overlay_physical | 0x80000000);
1149
1150         return 0;
1151 }
1152
1153 /* Not sure why this isn't set all the time:
1154  */
1155 static void i810_do_init_pageflip(struct drm_device *dev)
1156 {
1157         drm_i810_private_t *dev_priv = dev->dev_private;
1158
1159         DRM_DEBUG("\n");
1160         dev_priv->page_flipping = 1;
1161         dev_priv->current_page = 0;
1162         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1163 }
1164
1165 static int i810_do_cleanup_pageflip(struct drm_device *dev)
1166 {
1167         drm_i810_private_t *dev_priv = dev->dev_private;
1168
1169         DRM_DEBUG("\n");
1170         if (dev_priv->current_page != 0)
1171                 i810_dma_dispatch_flip(dev);
1172
1173         dev_priv->page_flipping = 0;
1174         return 0;
1175 }
1176
1177 static int i810_flip_bufs(struct drm_device *dev, void *data,
1178                           struct drm_file *file_priv)
1179 {
1180         drm_i810_private_t *dev_priv = dev->dev_private;
1181
1182         DRM_DEBUG("\n");
1183
1184         LOCK_TEST_WITH_RETURN(dev, file_priv);
1185
1186         if (!dev_priv->page_flipping)
1187                 i810_do_init_pageflip(dev);
1188
1189         i810_dma_dispatch_flip(dev);
1190         return 0;
1191 }
1192
1193 int i810_driver_load(struct drm_device *dev, unsigned long flags)
1194 {
1195         /* Our userspace depends upon the agp mapping support. */
1196         if (!dev->agp)
1197                 return -EINVAL;
1198
1199         pci_set_master(dev->pdev);
1200
1201         return 0;
1202 }
1203
1204 void i810_driver_lastclose(struct drm_device *dev)
1205 {
1206         i810_dma_cleanup(dev);
1207 }
1208
1209 void i810_driver_preclose(struct drm_device *dev, struct drm_file *file_priv)
1210 {
1211         if (dev->dev_private) {
1212                 drm_i810_private_t *dev_priv = dev->dev_private;
1213                 if (dev_priv->page_flipping)
1214                         i810_do_cleanup_pageflip(dev);
1215         }
1216
1217         if (file_priv->master && file_priv->master->lock.hw_lock) {
1218                 drm_legacy_idlelock_take(&file_priv->master->lock);
1219                 i810_driver_reclaim_buffers(dev, file_priv);
1220                 drm_legacy_idlelock_release(&file_priv->master->lock);
1221         } else {
1222                 /* master disappeared, clean up stuff anyway and hope nothing
1223                  * goes wrong */
1224                 i810_driver_reclaim_buffers(dev, file_priv);
1225         }
1226
1227 }
1228
1229 int i810_driver_dma_quiescent(struct drm_device *dev)
1230 {
1231         i810_dma_quiescent(dev);
1232         return 0;
1233 }
1234
1235 const struct drm_ioctl_desc i810_ioctls[] = {
1236         DRM_IOCTL_DEF_DRV(I810_INIT, i810_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1237         DRM_IOCTL_DEF_DRV(I810_VERTEX, i810_dma_vertex, DRM_AUTH|DRM_UNLOCKED),
1238         DRM_IOCTL_DEF_DRV(I810_CLEAR, i810_clear_bufs, DRM_AUTH|DRM_UNLOCKED),
1239         DRM_IOCTL_DEF_DRV(I810_FLUSH, i810_flush_ioctl, DRM_AUTH|DRM_UNLOCKED),
1240         DRM_IOCTL_DEF_DRV(I810_GETAGE, i810_getage, DRM_AUTH|DRM_UNLOCKED),
1241         DRM_IOCTL_DEF_DRV(I810_GETBUF, i810_getbuf, DRM_AUTH|DRM_UNLOCKED),
1242         DRM_IOCTL_DEF_DRV(I810_SWAP, i810_swap_bufs, DRM_AUTH|DRM_UNLOCKED),
1243         DRM_IOCTL_DEF_DRV(I810_COPY, i810_copybuf, DRM_AUTH|DRM_UNLOCKED),
1244         DRM_IOCTL_DEF_DRV(I810_DOCOPY, i810_docopy, DRM_AUTH|DRM_UNLOCKED),
1245         DRM_IOCTL_DEF_DRV(I810_OV0INFO, i810_ov0_info, DRM_AUTH|DRM_UNLOCKED),
1246         DRM_IOCTL_DEF_DRV(I810_FSTATUS, i810_fstatus, DRM_AUTH|DRM_UNLOCKED),
1247         DRM_IOCTL_DEF_DRV(I810_OV0FLIP, i810_ov0_flip, DRM_AUTH|DRM_UNLOCKED),
1248         DRM_IOCTL_DEF_DRV(I810_MC, i810_dma_mc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1249         DRM_IOCTL_DEF_DRV(I810_RSTATUS, i810_rstatus, DRM_AUTH|DRM_UNLOCKED),
1250         DRM_IOCTL_DEF_DRV(I810_FLIP, i810_flip_bufs, DRM_AUTH|DRM_UNLOCKED),
1251 };
1252
1253 int i810_max_ioctl = ARRAY_SIZE(i810_ioctls);
1254
1255 /**
1256  * Determine if the device really is AGP or not.
1257  *
1258  * All Intel graphics chipsets are treated as AGP, even if they are really
1259  * PCI-e.
1260  *
1261  * \param dev   The device to be tested.
1262  *
1263  * \returns
1264  * A value of 1 is always retured to indictate every i810 is AGP.
1265  */
1266 int i810_driver_device_is_agp(struct drm_device *dev)
1267 {
1268         return 1;
1269 }