drivers/char/drm/i810_dma.c

   1 /* i810_dma.c -- DMA support for the i810 -*- linux-c -*-
   2  * Created: Mon Dec 13 01:50:01 1999 by jhartmann@precisioninsight.com
   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 <faith@valinux.com>
  28  *          Jeff Hartmann <jhartmann@valinux.com>
  29  *          Keith Whitwell <keith@tungstengraphics.com>
  30  *
  31  */
  32
  33 #include "drmP.h"
  34 #include "drm.h"
  35 #include "i810_drm.h"
  36 #include "i810_drv.h"
  37 #include <linux/interrupt.h>    /* For task queue support */
  38 #include <linux/delay.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         }
  66         return NULL;
  67 }
  68
  69 /* This should only be called if the buffer is not sent to the hardware
  70  * yet, the hardware updates in use for us once its on the ring buffer.
  71  */
  72
  73 static int i810_freelist_put(struct drm_device * dev, struct drm_buf * buf)
  74 {
  75         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
  76         int used;
  77
  78         /* In use is already a pointer */
  79         used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_FREE);
  80         if (used != I810_BUF_CLIENT) {
  81                 DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx);
  82                 return -EINVAL;
  83         }
  84
  85         return 0;
  86 }
  87
  88 static int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
  89 {
  90         struct drm_file *priv = filp->private_data;
  91         struct drm_device *dev;
  92         drm_i810_private_t *dev_priv;
  93         struct drm_buf *buf;
  94         drm_i810_buf_priv_t *buf_priv;
  95
  96         lock_kernel();
  97         dev = priv->head->dev;
  98         dev_priv = dev->dev_private;
  99         buf = dev_priv->mmap_buffer;
 100         buf_priv = buf->dev_private;
 101
 102         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 103         vma->vm_file = filp;
 104
 105         buf_priv->currently_mapped = I810_BUF_MAPPED;
 106         unlock_kernel();
 107
 108         if (io_remap_pfn_range(vma, vma->vm_start,
 109                                vma->vm_pgoff,
 110                                vma->vm_end - vma->vm_start, vma->vm_page_prot))
 111                 return -EAGAIN;
 112         return 0;
 113 }
 114
 115 static const struct file_operations i810_buffer_fops = {
 116         .open = drm_open,
 117         .release = drm_release,
 118         .ioctl = drm_ioctl,
 119         .mmap = i810_mmap_buffers,
 120         .fasync = drm_fasync,
 121 };
 122
 123 static int i810_map_buffer(struct drm_buf * buf, struct drm_file *file_priv)
 124 {
 125         struct drm_device *dev = file_priv->head->dev;
 126         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 127         drm_i810_private_t *dev_priv = dev->dev_private;
 128         const struct file_operations *old_fops;
 129         int retcode = 0;
 130
 131         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
 132                 return -EINVAL;
 133
 134         down_write(&current->mm->mmap_sem);
 135         old_fops = file_priv->filp->f_op;
 136         file_priv->filp->f_op = &i810_buffer_fops;
 137         dev_priv->mmap_buffer = buf;
 138         buf_priv->virtual = (void *)do_mmap(file_priv->filp, 0, buf->total,
 139                                             PROT_READ | PROT_WRITE,
 140                                             MAP_SHARED, buf->bus_address);
 141         dev_priv->mmap_buffer = NULL;
 142         file_priv->filp->f_op = old_fops;
 143         if (IS_ERR(buf_priv->virtual)) {
 144                 /* Real error */
 145                 DRM_ERROR("mmap error\n");
 146                 retcode = PTR_ERR(buf_priv->virtual);
 147                 buf_priv->virtual = NULL;
 148         }
 149         up_write(&current->mm->mmap_sem);
 150
 151         return retcode;
 152 }
 153
 154 static int i810_unmap_buffer(struct drm_buf * buf)
 155 {
 156         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 157         int retcode = 0;
 158
 159         if (buf_priv->currently_mapped != I810_BUF_MAPPED)
 160                 return -EINVAL;
 161
 162         down_write(&current->mm->mmap_sem);
 163         retcode = do_munmap(current->mm,
 164                             (unsigned long)buf_priv->virtual,
 165                             (size_t) buf->total);
 166         up_write(&current->mm->mmap_sem);
 167
 168         buf_priv->currently_mapped = I810_BUF_UNMAPPED;
 169         buf_priv->virtual = NULL;
 170
 171         return retcode;
 172 }
 173
 174 static int i810_dma_get_buffer(struct drm_device * dev, drm_i810_dma_t * d,
 175                                struct drm_file *file_priv)
 176 {
 177         struct drm_buf *buf;
 178         drm_i810_buf_priv_t *buf_priv;
 179         int retcode = 0;
 180
 181         buf = i810_freelist_get(dev);
 182         if (!buf) {
 183                 retcode = -ENOMEM;
 184                 DRM_DEBUG("retcode=%d\n", retcode);
 185                 return retcode;
 186         }
 187
 188         retcode = i810_map_buffer(buf, file_priv);
 189         if (retcode) {
 190                 i810_freelist_put(dev, buf);
 191                 DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
 192                 return retcode;
 193         }
 194         buf->file_priv = file_priv;
 195         buf_priv = buf->dev_private;
 196         d->granted = 1;
 197         d->request_idx = buf->idx;
 198         d->request_size = buf->total;
 199         d->virtual = buf_priv->virtual;
 200
 201         return retcode;
 202 }
 203
 204 static int i810_dma_cleanup(struct drm_device * dev)
 205 {
 206         struct drm_device_dma *dma = dev->dma;
 207
 208         /* Make sure interrupts are disabled here because the uninstall ioctl
 209          * may not have been called from userspace and after dev_private
 210          * is freed, it's too late.
 211          */
 212         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ) && dev->irq_enabled)
 213                 drm_irq_uninstall(dev);
 214
 215         if (dev->dev_private) {
 216                 int i;
 217                 drm_i810_private_t *dev_priv =
 218                     (drm_i810_private_t *) dev->dev_private;
 219
 220                 if (dev_priv->ring.virtual_start) {
 221                         drm_core_ioremapfree(&dev_priv->ring.map, dev);
 222                 }
 223                 if (dev_priv->hw_status_page) {
 224                         pci_free_consistent(dev->pdev, PAGE_SIZE,
 225                                             dev_priv->hw_status_page,
 226                                             dev_priv->dma_status_page);
 227                         /* Need to rewrite hardware status page */
 228                         I810_WRITE(0x02080, 0x1ffff000);
 229                 }
 230                 drm_free(dev->dev_private, sizeof(drm_i810_private_t),
 231                          DRM_MEM_DRIVER);
 232                 dev->dev_private = NULL;
 233
 234                 for (i = 0; i < dma->buf_count; i++) {
 235                         struct drm_buf *buf = dma->buflist[i];
 236                         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 237
 238                         if (buf_priv->kernel_virtual && buf->total)
 239                                 drm_core_ioremapfree(&buf_priv->map, dev);
 240                 }
 241         }
 242         return 0;
 243 }
 244
 245 static int i810_wait_ring(struct drm_device * dev, int n)
 246 {
 247         drm_i810_private_t *dev_priv = dev->dev_private;
 248         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
 249         int iters = 0;
 250         unsigned long end;
 251         unsigned int last_head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 252
 253         end = jiffies + (HZ * 3);
 254         while (ring->space < n) {
 255                 ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 256                 ring->space = ring->head - (ring->tail + 8);
 257                 if (ring->space < 0)
 258                         ring->space += ring->Size;
 259
 260                 if (ring->head != last_head) {
 261                         end = jiffies + (HZ * 3);
 262                         last_head = ring->head;
 263                 }
 264
 265                 iters++;
 266                 if (time_before(end, jiffies)) {
 267                         DRM_ERROR("space: %d wanted %d\n", ring->space, n);
 268                         DRM_ERROR("lockup\n");
 269                         goto out_wait_ring;
 270                 }
 271                 udelay(1);
 272         }
 273
 274       out_wait_ring:
 275         return iters;
 276 }
 277
 278 static void i810_kernel_lost_context(struct drm_device * dev)
 279 {
 280         drm_i810_private_t *dev_priv = dev->dev_private;
 281         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
 282
 283         ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 284         ring->tail = I810_READ(LP_RING + RING_TAIL);
 285         ring->space = ring->head - (ring->tail + 8);
 286         if (ring->space < 0)
 287                 ring->space += ring->Size;
 288 }
 289
 290 static int i810_freelist_init(struct drm_device * dev, drm_i810_private_t * dev_priv)
 291 {
 292         struct drm_device_dma *dma = dev->dma;
 293         int my_idx = 24;
 294         u32 *hw_status = (u32 *) (dev_priv->hw_status_page + my_idx);
 295         int i;
 296
 297         if (dma->buf_count > 1019) {
 298                 /* Not enough space in the status page for the freelist */
 299                 return -EINVAL;
 300         }
 301
 302         for (i = 0; i < dma->buf_count; i++) {
 303                 struct drm_buf *buf = dma->buflist[i];
 304                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 305
 306                 buf_priv->in_use = hw_status++;
 307                 buf_priv->my_use_idx = my_idx;
 308                 my_idx += 4;
 309
 310                 *buf_priv->in_use = I810_BUF_FREE;
 311
 312                 buf_priv->map.offset = buf->bus_address;
 313                 buf_priv->map.size = buf->total;
 314                 buf_priv->map.type = _DRM_AGP;
 315                 buf_priv->map.flags = 0;
 316                 buf_priv->map.mtrr = 0;
 317
 318                 drm_core_ioremap(&buf_priv->map, dev);
 319                 buf_priv->kernel_virtual = buf_priv->map.handle;
 320
 321         }
 322         return 0;
 323 }
 324
 325 static int i810_dma_initialize(struct drm_device * dev,
 326                                drm_i810_private_t * dev_priv,
 327                                drm_i810_init_t * init)
 328 {
 329         struct drm_map_list *r_list;
 330         memset(dev_priv, 0, sizeof(drm_i810_private_t));
 331
 332         list_for_each_entry(r_list, &dev->maplist, head) {
 333                 if (r_list->map &&
 334                     r_list->map->type == _DRM_SHM &&
 335                     r_list->map->flags & _DRM_CONTAINS_LOCK) {
 336                         dev_priv->sarea_map = r_list->map;
 337                         break;
 338                 }
 339         }
 340         if (!dev_priv->sarea_map) {
 341                 dev->dev_private = (void *)dev_priv;
 342                 i810_dma_cleanup(dev);
 343                 DRM_ERROR("can not find sarea!\n");
 344                 return -EINVAL;
 345         }
 346         dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
 347         if (!dev_priv->mmio_map) {
 348                 dev->dev_private = (void *)dev_priv;
 349                 i810_dma_cleanup(dev);
 350                 DRM_ERROR("can not find mmio map!\n");
 351                 return -EINVAL;
 352         }
 353         dev->agp_buffer_token = init->buffers_offset;
 354         dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
 355         if (!dev->agp_buffer_map) {
 356                 dev->dev_private = (void *)dev_priv;
 357                 i810_dma_cleanup(dev);
 358                 DRM_ERROR("can not find dma buffer map!\n");
 359                 return -EINVAL;
 360         }
 361
 362         dev_priv->sarea_priv = (drm_i810_sarea_t *)
 363             ((u8 *) dev_priv->sarea_map->handle + init->sarea_priv_offset);
 364
 365         dev_priv->ring.Start = init->ring_start;
 366         dev_priv->ring.End = init->ring_end;
 367         dev_priv->ring.Size = init->ring_size;
 368
 369         dev_priv->ring.map.offset = dev->agp->base + init->ring_start;
 370         dev_priv->ring.map.size = init->ring_size;
 371         dev_priv->ring.map.type = _DRM_AGP;
 372         dev_priv->ring.map.flags = 0;
 373         dev_priv->ring.map.mtrr = 0;
 374
 375         drm_core_ioremap(&dev_priv->ring.map, dev);
 376
 377         if (dev_priv->ring.map.handle == NULL) {
 378                 dev->dev_private = (void *)dev_priv;
 379                 i810_dma_cleanup(dev);
 380                 DRM_ERROR("can not ioremap virtual address for"
 381                           " ring buffer\n");
 382                 return -ENOMEM;
 383         }
 384
 385         dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
 386
 387         dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
 388
 389         dev_priv->w = init->w;
 390         dev_priv->h = init->h;
 391         dev_priv->pitch = init->pitch;
 392         dev_priv->back_offset = init->back_offset;
 393         dev_priv->depth_offset = init->depth_offset;
 394         dev_priv->front_offset = init->front_offset;
 395
 396         dev_priv->overlay_offset = init->overlay_offset;
 397         dev_priv->overlay_physical = init->overlay_physical;
 398
 399         dev_priv->front_di1 = init->front_offset | init->pitch_bits;
 400         dev_priv->back_di1 = init->back_offset | init->pitch_bits;
 401         dev_priv->zi1 = init->depth_offset | init->pitch_bits;
 402
 403         /* Program Hardware Status Page */
 404         dev_priv->hw_status_page =
 405             pci_alloc_consistent(dev->pdev, PAGE_SIZE,
 406                                  &dev_priv->dma_status_page);
 407         if (!dev_priv->hw_status_page) {
 408                 dev->dev_private = (void *)dev_priv;
 409                 i810_dma_cleanup(dev);
 410                 DRM_ERROR("Can not allocate hardware status page\n");
 411                 return -ENOMEM;
 412         }
 413         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
 414         DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
 415
 416         I810_WRITE(0x02080, dev_priv->dma_status_page);
 417         DRM_DEBUG("Enabled hardware status page\n");
 418
 419         /* Now we need to init our freelist */
 420         if (i810_freelist_init(dev, dev_priv) != 0) {
 421                 dev->dev_private = (void *)dev_priv;
 422                 i810_dma_cleanup(dev);
 423                 DRM_ERROR("Not enough space in the status page for"
 424                           " the freelist\n");
 425                 return -ENOMEM;
 426         }
 427         dev->dev_private = (void *)dev_priv;
 428
 429         return 0;
 430 }
 431
 432 static int i810_dma_init(struct drm_device *dev, void *data,
 433                          struct drm_file *file_priv)
 434 {
 435         drm_i810_private_t *dev_priv;
 436         drm_i810_init_t *init = data;
 437         int retcode = 0;
 438
 439         switch (init->func) {
 440         case I810_INIT_DMA_1_4:
 441                 DRM_INFO("Using v1.4 init.\n");
 442                 dev_priv = drm_alloc(sizeof(drm_i810_private_t),
 443                                      DRM_MEM_DRIVER);
 444                 if (dev_priv == NULL)
 445                         return -ENOMEM;
 446                 retcode = i810_dma_initialize(dev, dev_priv, init);
 447                 break;
 448
 449         case I810_CLEANUP_DMA:
 450                 DRM_INFO("DMA Cleanup\n");
 451                 retcode = i810_dma_cleanup(dev);
 452                 break;
 453         default:
 454                 return -EINVAL;
 455         }
 456
 457         return retcode;
 458 }
 459
 460 /* Most efficient way to verify state for the i810 is as it is
 461  * emitted.  Non-conformant state is silently dropped.
 462  *
 463  * Use 'volatile' & local var tmp to force the emitted values to be
 464  * identical to the verified ones.
 465  */
 466 static void i810EmitContextVerified(struct drm_device * dev,
 467                                     volatile unsigned int *code)
 468 {
 469         drm_i810_private_t *dev_priv = dev->dev_private;
 470         int i, j = 0;
 471         unsigned int tmp;
 472         RING_LOCALS;
 473
 474         BEGIN_LP_RING(I810_CTX_SETUP_SIZE);
 475
 476         OUT_RING(GFX_OP_COLOR_FACTOR);
 477         OUT_RING(code[I810_CTXREG_CF1]);
 478
 479         OUT_RING(GFX_OP_STIPPLE);
 480         OUT_RING(code[I810_CTXREG_ST1]);
 481
 482         for (i = 4; i < I810_CTX_SETUP_SIZE; i++) {
 483                 tmp = code[i];
 484
 485                 if ((tmp & (7 << 29)) == (3 << 29) &&
 486                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
 487                         OUT_RING(tmp);
 488                         j++;
 489                 } else
 490                         printk("constext state dropped!!!\n");
 491         }
 492
 493         if (j & 1)
 494                 OUT_RING(0);
 495
 496         ADVANCE_LP_RING();
 497 }
 498
 499 static void i810EmitTexVerified(struct drm_device * dev, volatile unsigned int *code)
 500 {
 501         drm_i810_private_t *dev_priv = dev->dev_private;
 502         int i, j = 0;
 503         unsigned int tmp;
 504         RING_LOCALS;
 505
 506         BEGIN_LP_RING(I810_TEX_SETUP_SIZE);
 507
 508         OUT_RING(GFX_OP_MAP_INFO);
 509         OUT_RING(code[I810_TEXREG_MI1]);
 510         OUT_RING(code[I810_TEXREG_MI2]);
 511         OUT_RING(code[I810_TEXREG_MI3]);
 512
 513         for (i = 4; i < I810_TEX_SETUP_SIZE; i++) {
 514                 tmp = code[i];
 515
 516                 if ((tmp & (7 << 29)) == (3 << 29) &&
 517                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
 518                         OUT_RING(tmp);
 519                         j++;
 520                 } else
 521                         printk("texture state dropped!!!\n");
 522         }
 523
 524         if (j & 1)
 525                 OUT_RING(0);
 526
 527         ADVANCE_LP_RING();
 528 }
 529
 530 /* Need to do some additional checking when setting the dest buffer.
 531  */
 532 static void i810EmitDestVerified(struct drm_device * dev,
 533                                  volatile unsigned int *code)
 534 {
 535         drm_i810_private_t *dev_priv = dev->dev_private;
 536         unsigned int tmp;
 537         RING_LOCALS;
 538
 539         BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
 540
 541         tmp = code[I810_DESTREG_DI1];
 542         if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
 543                 OUT_RING(CMD_OP_DESTBUFFER_INFO);
 544                 OUT_RING(tmp);
 545         } else
 546                 DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
 547                           tmp, dev_priv->front_di1, dev_priv->back_di1);
 548
 549         /* invarient:
 550          */
 551         OUT_RING(CMD_OP_Z_BUFFER_INFO);
 552         OUT_RING(dev_priv->zi1);
 553
 554         OUT_RING(GFX_OP_DESTBUFFER_VARS);
 555         OUT_RING(code[I810_DESTREG_DV1]);
 556
 557         OUT_RING(GFX_OP_DRAWRECT_INFO);
 558         OUT_RING(code[I810_DESTREG_DR1]);
 559         OUT_RING(code[I810_DESTREG_DR2]);
 560         OUT_RING(code[I810_DESTREG_DR3]);
 561         OUT_RING(code[I810_DESTREG_DR4]);
 562         OUT_RING(0);
 563
 564         ADVANCE_LP_RING();
 565 }
 566
 567 static void i810EmitState(struct drm_device * dev)
 568 {
 569         drm_i810_private_t *dev_priv = dev->dev_private;
 570         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 571         unsigned int dirty = sarea_priv->dirty;
 572
 573         DRM_DEBUG("%s %x\n", __FUNCTION__, dirty);
 574
 575         if (dirty & I810_UPLOAD_BUFFERS) {
 576                 i810EmitDestVerified(dev, sarea_priv->BufferState);
 577                 sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
 578         }
 579
 580         if (dirty & I810_UPLOAD_CTX) {
 581                 i810EmitContextVerified(dev, sarea_priv->ContextState);
 582                 sarea_priv->dirty &= ~I810_UPLOAD_CTX;
 583         }
 584
 585         if (dirty & I810_UPLOAD_TEX0) {
 586                 i810EmitTexVerified(dev, sarea_priv->TexState[0]);
 587                 sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
 588         }
 589
 590         if (dirty & I810_UPLOAD_TEX1) {
 591                 i810EmitTexVerified(dev, sarea_priv->TexState[1]);
 592                 sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
 593         }
 594 }
 595
 596 /* need to verify
 597  */
 598 static void i810_dma_dispatch_clear(struct drm_device * dev, int flags,
 599                                     unsigned int clear_color,
 600                                     unsigned int clear_zval)
 601 {
 602         drm_i810_private_t *dev_priv = dev->dev_private;
 603         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 604         int nbox = sarea_priv->nbox;
 605         struct drm_clip_rect *pbox = sarea_priv->boxes;
 606         int pitch = dev_priv->pitch;
 607         int cpp = 2;
 608         int i;
 609         RING_LOCALS;
 610
 611         if (dev_priv->current_page == 1) {
 612                 unsigned int tmp = flags;
 613
 614                 flags &= ~(I810_FRONT | I810_BACK);
 615                 if (tmp & I810_FRONT)
 616                         flags |= I810_BACK;
 617                 if (tmp & I810_BACK)
 618                         flags |= I810_FRONT;
 619         }
 620
 621         i810_kernel_lost_context(dev);
 622
 623         if (nbox > I810_NR_SAREA_CLIPRECTS)
 624                 nbox = I810_NR_SAREA_CLIPRECTS;
 625
 626         for (i = 0; i < nbox; i++, pbox++) {
 627                 unsigned int x = pbox->x1;
 628                 unsigned int y = pbox->y1;
 629                 unsigned int width = (pbox->x2 - x) * cpp;
 630                 unsigned int height = pbox->y2 - y;
 631                 unsigned int start = y * pitch + x * cpp;
 632
 633                 if (pbox->x1 > pbox->x2 ||
 634                     pbox->y1 > pbox->y2 ||
 635                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
 636                         continue;
 637
 638                 if (flags & I810_FRONT) {
 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(start);
 644                         OUT_RING(clear_color);
 645                         OUT_RING(0);
 646                         ADVANCE_LP_RING();
 647                 }
 648
 649                 if (flags & I810_BACK) {
 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->back_offset + start);
 655                         OUT_RING(clear_color);
 656                         OUT_RING(0);
 657                         ADVANCE_LP_RING();
 658                 }
 659
 660                 if (flags & I810_DEPTH) {
 661                         BEGIN_LP_RING(6);
 662                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
 663                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
 664                         OUT_RING((height << 16) | width);
 665                         OUT_RING(dev_priv->depth_offset + start);
 666                         OUT_RING(clear_zval);
 667                         OUT_RING(0);
 668                         ADVANCE_LP_RING();
 669                 }
 670         }
 671 }
 672
 673 static void i810_dma_dispatch_swap(struct drm_device * dev)
 674 {
 675         drm_i810_private_t *dev_priv = dev->dev_private;
 676         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 677         int nbox = sarea_priv->nbox;
 678         struct drm_clip_rect *pbox = sarea_priv->boxes;
 679         int pitch = dev_priv->pitch;
 680         int cpp = 2;
 681         int i;
 682         RING_LOCALS;
 683
 684         DRM_DEBUG("swapbuffers\n");
 685
 686         i810_kernel_lost_context(dev);
 687
 688         if (nbox > I810_NR_SAREA_CLIPRECTS)
 689                 nbox = I810_NR_SAREA_CLIPRECTS;
 690
 691         for (i = 0; i < nbox; i++, pbox++) {
 692                 unsigned int w = pbox->x2 - pbox->x1;
 693                 unsigned int h = pbox->y2 - pbox->y1;
 694                 unsigned int dst = pbox->x1 * cpp + pbox->y1 * pitch;
 695                 unsigned int start = dst;
 696
 697                 if (pbox->x1 > pbox->x2 ||
 698                     pbox->y1 > pbox->y2 ||
 699                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
 700                         continue;
 701
 702                 BEGIN_LP_RING(6);
 703                 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4);
 704                 OUT_RING(pitch | (0xCC << 16));
 705                 OUT_RING((h << 16) | (w * cpp));
 706                 if (dev_priv->current_page == 0)
 707                         OUT_RING(dev_priv->front_offset + start);
 708                 else
 709                         OUT_RING(dev_priv->back_offset + start);
 710                 OUT_RING(pitch);
 711                 if (dev_priv->current_page == 0)
 712                         OUT_RING(dev_priv->back_offset + start);
 713                 else
 714                         OUT_RING(dev_priv->front_offset + start);
 715                 ADVANCE_LP_RING();
 716         }
 717 }
 718
 719 static void i810_dma_dispatch_vertex(struct drm_device * dev,
 720                                      struct drm_buf * buf, int discard, int used)
 721 {
 722         drm_i810_private_t *dev_priv = dev->dev_private;
 723         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 724         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 725         struct drm_clip_rect *box = sarea_priv->boxes;
 726         int nbox = sarea_priv->nbox;
 727         unsigned long address = (unsigned long)buf->bus_address;
 728         unsigned long start = address - dev->agp->base;
 729         int i = 0;
 730         RING_LOCALS;
 731
 732         i810_kernel_lost_context(dev);
 733
 734         if (nbox > I810_NR_SAREA_CLIPRECTS)
 735                 nbox = I810_NR_SAREA_CLIPRECTS;
 736
 737         if (used > 4 * 1024)
 738                 used = 0;
 739
 740         if (sarea_priv->dirty)
 741                 i810EmitState(dev);
 742
 743         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
 744                 unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
 745
 746                 *(u32 *) buf_priv->kernel_virtual =
 747                     ((GFX_OP_PRIMITIVE | prim | ((used / 4) - 2)));
 748
 749                 if (used & 4) {
 750                         *(u32 *) ((char *) buf_priv->kernel_virtual + used) = 0;
 751                         used += 4;
 752                 }
 753
 754                 i810_unmap_buffer(buf);
 755         }
 756
 757         if (used) {
 758                 do {
 759                         if (i < nbox) {
 760                                 BEGIN_LP_RING(4);
 761                                 OUT_RING(GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
 762                                          SC_ENABLE);
 763                                 OUT_RING(GFX_OP_SCISSOR_INFO);
 764                                 OUT_RING(box[i].x1 | (box[i].y1 << 16));
 765                                 OUT_RING((box[i].x2 -
 766                                           1) | ((box[i].y2 - 1) << 16));
 767                                 ADVANCE_LP_RING();
 768                         }
 769
 770                         BEGIN_LP_RING(4);
 771                         OUT_RING(CMD_OP_BATCH_BUFFER);
 772                         OUT_RING(start | BB1_PROTECTED);
 773                         OUT_RING(start + used - 4);
 774                         OUT_RING(0);
 775                         ADVANCE_LP_RING();
 776
 777                 } while (++i < nbox);
 778         }
 779
 780         if (discard) {
 781                 dev_priv->counter++;
 782
 783                 (void)cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
 784                               I810_BUF_HARDWARE);
 785
 786                 BEGIN_LP_RING(8);
 787                 OUT_RING(CMD_STORE_DWORD_IDX);
 788                 OUT_RING(20);
 789                 OUT_RING(dev_priv->counter);
 790                 OUT_RING(CMD_STORE_DWORD_IDX);
 791                 OUT_RING(buf_priv->my_use_idx);
 792                 OUT_RING(I810_BUF_FREE);
 793                 OUT_RING(CMD_REPORT_HEAD);
 794                 OUT_RING(0);
 795                 ADVANCE_LP_RING();
 796         }
 797 }
 798
 799 static void i810_dma_dispatch_flip(struct drm_device * dev)
 800 {
 801         drm_i810_private_t *dev_priv = dev->dev_private;
 802         int pitch = dev_priv->pitch;
 803         RING_LOCALS;
 804
 805         DRM_DEBUG("%s: page=%d pfCurrentPage=%d\n",
 806                   __FUNCTION__,
 807                   dev_priv->current_page,
 808                   dev_priv->sarea_priv->pf_current_page);
 809
 810         i810_kernel_lost_context(dev);
 811
 812         BEGIN_LP_RING(2);
 813         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
 814         OUT_RING(0);
 815         ADVANCE_LP_RING();
 816
 817         BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
 818         /* On i815 at least ASYNC is buggy */
 819         /* pitch<<5 is from 11.2.8 p158,
 820            its the pitch / 8 then left shifted 8,
 821            so (pitch >> 3) << 8 */
 822         OUT_RING(CMD_OP_FRONTBUFFER_INFO | (pitch << 5) /*| ASYNC_FLIP */ );
 823         if (dev_priv->current_page == 0) {
 824                 OUT_RING(dev_priv->back_offset);
 825                 dev_priv->current_page = 1;
 826         } else {
 827                 OUT_RING(dev_priv->front_offset);
 828                 dev_priv->current_page = 0;
 829         }
 830         OUT_RING(0);
 831         ADVANCE_LP_RING();
 832
 833         BEGIN_LP_RING(2);
 834         OUT_RING(CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP);
 835         OUT_RING(0);
 836         ADVANCE_LP_RING();
 837
 838         /* Increment the frame counter.  The client-side 3D driver must
 839          * throttle the framerate by waiting for this value before
 840          * performing the swapbuffer ioctl.
 841          */
 842         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
 843
 844 }
 845
 846 static void i810_dma_quiescent(struct drm_device * dev)
 847 {
 848         drm_i810_private_t *dev_priv = dev->dev_private;
 849         RING_LOCALS;
 850
 851 /*      printk("%s\n", __FUNCTION__); */
 852
 853         i810_kernel_lost_context(dev);
 854
 855         BEGIN_LP_RING(4);
 856         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
 857         OUT_RING(CMD_REPORT_HEAD);
 858         OUT_RING(0);
 859         OUT_RING(0);
 860         ADVANCE_LP_RING();
 861
 862         i810_wait_ring(dev, dev_priv->ring.Size - 8);
 863 }
 864
 865 static int i810_flush_queue(struct drm_device * dev)
 866 {
 867         drm_i810_private_t *dev_priv = dev->dev_private;
 868         struct drm_device_dma *dma = dev->dma;
 869         int i, ret = 0;
 870         RING_LOCALS;
 871
 872 /*      printk("%s\n", __FUNCTION__); */
 873
 874         i810_kernel_lost_context(dev);
 875
 876         BEGIN_LP_RING(2);
 877         OUT_RING(CMD_REPORT_HEAD);
 878         OUT_RING(0);
 879         ADVANCE_LP_RING();
 880
 881         i810_wait_ring(dev, dev_priv->ring.Size - 8);
 882
 883         for (i = 0; i < dma->buf_count; i++) {
 884                 struct drm_buf *buf = dma->buflist[i];
 885                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 886
 887                 int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
 888                                    I810_BUF_FREE);
 889
 890                 if (used == I810_BUF_HARDWARE)
 891                         DRM_DEBUG("reclaimed from HARDWARE\n");
 892                 if (used == I810_BUF_CLIENT)
 893                         DRM_DEBUG("still on client\n");
 894         }
 895
 896         return ret;
 897 }
 898
 899 /* Must be called with the lock held */
 900 static void i810_reclaim_buffers(struct drm_device * dev,
 901                                  struct drm_file *file_priv)
 902 {
 903         struct drm_device_dma *dma = dev->dma;
 904         int i;
 905
 906         if (!dma)
 907                 return;
 908         if (!dev->dev_private)
 909                 return;
 910         if (!dma->buflist)
 911                 return;
 912
 913         i810_flush_queue(dev);
 914
 915         for (i = 0; i < dma->buf_count; i++) {
 916                 struct drm_buf *buf = dma->buflist[i];
 917                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 918
 919                 if (buf->file_priv == file_priv && buf_priv) {
 920                         int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
 921                                            I810_BUF_FREE);
 922
 923                         if (used == I810_BUF_CLIENT)
 924                                 DRM_DEBUG("reclaimed from client\n");
 925                         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
 926                                 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
 927                 }
 928         }
 929 }
 930
 931 static int i810_flush_ioctl(struct drm_device *dev, void *data,
 932                             struct drm_file *file_priv)
 933 {
 934         LOCK_TEST_WITH_RETURN(dev, file_priv);
 935
 936         i810_flush_queue(dev);
 937         return 0;
 938 }
 939
 940 static int i810_dma_vertex(struct drm_device *dev, void *data,
 941                            struct drm_file *file_priv)
 942 {
 943         struct drm_device_dma *dma = dev->dma;
 944         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
 945         u32 *hw_status = dev_priv->hw_status_page;
 946         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
 947             dev_priv->sarea_priv;
 948         drm_i810_vertex_t *vertex = data;
 949
 950         LOCK_TEST_WITH_RETURN(dev, file_priv);
 951
 952         DRM_DEBUG("i810 dma vertex, idx %d used %d discard %d\n",
 953                   vertex->idx, vertex->used, vertex->discard);
 954
 955         if (vertex->idx < 0 || vertex->idx > dma->buf_count)
 956                 return -EINVAL;
 957
 958         i810_dma_dispatch_vertex(dev,
 959                                  dma->buflist[vertex->idx],
 960                                  vertex->discard, vertex->used);
 961
 962         atomic_add(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]);
 963         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
 964         sarea_priv->last_enqueue = dev_priv->counter - 1;
 965         sarea_priv->last_dispatch = (int)hw_status[5];
 966
 967         return 0;
 968 }
 969
 970 static int i810_clear_bufs(struct drm_device *dev, void *data,
 971                            struct drm_file *file_priv)
 972 {
 973         drm_i810_clear_t *clear = data;
 974
 975         LOCK_TEST_WITH_RETURN(dev, file_priv);
 976
 977         /* GH: Someone's doing nasty things... */
 978         if (!dev->dev_private) {
 979                 return -EINVAL;
 980         }
 981
 982         i810_dma_dispatch_clear(dev, clear->flags,
 983                                 clear->clear_color, clear->clear_depth);
 984         return 0;
 985 }
 986
 987 static int i810_swap_bufs(struct drm_device *dev, void *data,
 988                           struct drm_file *file_priv)
 989 {
 990         DRM_DEBUG("i810_swap_bufs\n");
 991
 992         LOCK_TEST_WITH_RETURN(dev, file_priv);
 993
 994         i810_dma_dispatch_swap(dev);
 995         return 0;
 996 }
 997
 998 static int i810_getage(struct drm_device *dev, void *data,
 999                        struct drm_file *file_priv)
1000 {
1001         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1002         u32 *hw_status = dev_priv->hw_status_page;
1003         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1004             dev_priv->sarea_priv;
1005
1006         sarea_priv->last_dispatch = (int)hw_status[5];
1007         return 0;
1008 }
1009
1010 static int i810_getbuf(struct drm_device *dev, void *data,
1011                        struct drm_file *file_priv)
1012 {
1013         int retcode = 0;
1014         drm_i810_dma_t *d = data;
1015         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1016         u32 *hw_status = dev_priv->hw_status_page;
1017         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1018             dev_priv->sarea_priv;
1019
1020         LOCK_TEST_WITH_RETURN(dev, file_priv);
1021
1022         d->granted = 0;
1023
1024         retcode = i810_dma_get_buffer(dev, d, file_priv);
1025
1026         DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
1027                   task_pid_nr(current), retcode, d->granted);
1028
1029         sarea_priv->last_dispatch = (int)hw_status[5];
1030
1031         return retcode;
1032 }
1033
1034 static int i810_copybuf(struct drm_device *dev, void *data,
1035                         struct drm_file *file_priv)
1036 {
1037         /* Never copy - 2.4.x doesn't need it */
1038         return 0;
1039 }
1040
1041 static int i810_docopy(struct drm_device *dev, void *data,
1042                         struct drm_file *file_priv)
1043 {
1044         /* Never copy - 2.4.x doesn't need it */
1045         return 0;
1046 }
1047
1048 static void i810_dma_dispatch_mc(struct drm_device * dev, struct drm_buf * buf, int used,
1049                                  unsigned int last_render)
1050 {
1051         drm_i810_private_t *dev_priv = dev->dev_private;
1052         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
1053         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
1054         unsigned long address = (unsigned long)buf->bus_address;
1055         unsigned long start = address - dev->agp->base;
1056         int u;
1057         RING_LOCALS;
1058
1059         i810_kernel_lost_context(dev);
1060
1061         u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_HARDWARE);
1062         if (u != I810_BUF_CLIENT) {
1063                 DRM_DEBUG("MC found buffer that isn't mine!\n");
1064         }
1065
1066         if (used > 4 * 1024)
1067                 used = 0;
1068
1069         sarea_priv->dirty = 0x7f;
1070
1071         DRM_DEBUG("dispatch mc addr 0x%lx, used 0x%x\n", address, used);
1072
1073         dev_priv->counter++;
1074         DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1075         DRM_DEBUG("i810_dma_dispatch_mc\n");
1076         DRM_DEBUG("start : %lx\n", start);
1077         DRM_DEBUG("used : %d\n", used);
1078         DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1079
1080         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
1081                 if (used & 4) {
1082                         *(u32 *) ((char *) buf_priv->virtual + used) = 0;
1083                         used += 4;
1084                 }
1085
1086                 i810_unmap_buffer(buf);
1087         }
1088         BEGIN_LP_RING(4);
1089         OUT_RING(CMD_OP_BATCH_BUFFER);
1090         OUT_RING(start | BB1_PROTECTED);
1091         OUT_RING(start + used - 4);
1092         OUT_RING(0);
1093         ADVANCE_LP_RING();
1094
1095         BEGIN_LP_RING(8);
1096         OUT_RING(CMD_STORE_DWORD_IDX);
1097         OUT_RING(buf_priv->my_use_idx);
1098         OUT_RING(I810_BUF_FREE);
1099         OUT_RING(0);
1100
1101         OUT_RING(CMD_STORE_DWORD_IDX);
1102         OUT_RING(16);
1103         OUT_RING(last_render);
1104         OUT_RING(0);
1105         ADVANCE_LP_RING();
1106 }
1107
1108 static int i810_dma_mc(struct drm_device *dev, void *data,
1109                        struct drm_file *file_priv)
1110 {
1111         struct drm_device_dma *dma = dev->dma;
1112         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1113         u32 *hw_status = dev_priv->hw_status_page;
1114         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1115             dev_priv->sarea_priv;
1116         drm_i810_mc_t *mc = data;
1117
1118         LOCK_TEST_WITH_RETURN(dev, file_priv);
1119
1120         if (mc->idx >= dma->buf_count || mc->idx < 0)
1121                 return -EINVAL;
1122
1123         i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used,
1124                              mc->last_render);
1125
1126         atomic_add(mc->used, &dev->counts[_DRM_STAT_SECONDARY]);
1127         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1128         sarea_priv->last_enqueue = dev_priv->counter - 1;
1129         sarea_priv->last_dispatch = (int)hw_status[5];
1130
1131         return 0;
1132 }
1133
1134 static int i810_rstatus(struct drm_device *dev, void *data,
1135                         struct drm_file *file_priv)
1136 {
1137         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1138
1139         return (int)(((u32 *) (dev_priv->hw_status_page))[4]);
1140 }
1141
1142 static int i810_ov0_info(struct drm_device *dev, void *data,
1143                          struct drm_file *file_priv)
1144 {
1145         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1146         drm_i810_overlay_t *ov = data;
1147
1148         ov->offset = dev_priv->overlay_offset;
1149         ov->physical = dev_priv->overlay_physical;
1150
1151         return 0;
1152 }
1153
1154 static int i810_fstatus(struct drm_device *dev, void *data,
1155                         struct drm_file *file_priv)
1156 {
1157         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1158
1159         LOCK_TEST_WITH_RETURN(dev, file_priv);
1160         return I810_READ(0x30008);
1161 }
1162
1163 static int i810_ov0_flip(struct drm_device *dev, void *data,
1164                          struct drm_file *file_priv)
1165 {
1166         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1167
1168         LOCK_TEST_WITH_RETURN(dev, file_priv);
1169
1170         //Tell the overlay to update
1171         I810_WRITE(0x30000, dev_priv->overlay_physical | 0x80000000);
1172
1173         return 0;
1174 }
1175
1176 /* Not sure why this isn't set all the time:
1177  */
1178 static void i810_do_init_pageflip(struct drm_device * dev)
1179 {
1180         drm_i810_private_t *dev_priv = dev->dev_private;
1181
1182         DRM_DEBUG("%s\n", __FUNCTION__);
1183         dev_priv->page_flipping = 1;
1184         dev_priv->current_page = 0;
1185         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1186 }
1187
1188 static int i810_do_cleanup_pageflip(struct drm_device * dev)
1189 {
1190         drm_i810_private_t *dev_priv = dev->dev_private;
1191
1192         DRM_DEBUG("%s\n", __FUNCTION__);
1193         if (dev_priv->current_page != 0)
1194                 i810_dma_dispatch_flip(dev);
1195
1196         dev_priv->page_flipping = 0;
1197         return 0;
1198 }
1199
1200 static int i810_flip_bufs(struct drm_device *dev, void *data,
1201                           struct drm_file *file_priv)
1202 {
1203         drm_i810_private_t *dev_priv = dev->dev_private;
1204
1205         DRM_DEBUG("%s\n", __FUNCTION__);
1206
1207         LOCK_TEST_WITH_RETURN(dev, file_priv);
1208
1209         if (!dev_priv->page_flipping)
1210                 i810_do_init_pageflip(dev);
1211
1212         i810_dma_dispatch_flip(dev);
1213         return 0;
1214 }
1215
1216 int i810_driver_load(struct drm_device *dev, unsigned long flags)
1217 {
1218         /* i810 has 4 more counters */
1219         dev->counters += 4;
1220         dev->types[6] = _DRM_STAT_IRQ;
1221         dev->types[7] = _DRM_STAT_PRIMARY;
1222         dev->types[8] = _DRM_STAT_SECONDARY;
1223         dev->types[9] = _DRM_STAT_DMA;
1224
1225         return 0;
1226 }
1227
1228 void i810_driver_lastclose(struct drm_device * dev)
1229 {
1230         i810_dma_cleanup(dev);
1231 }
1232
1233 void i810_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
1234 {
1235         if (dev->dev_private) {
1236                 drm_i810_private_t *dev_priv = dev->dev_private;
1237                 if (dev_priv->page_flipping) {
1238                         i810_do_cleanup_pageflip(dev);
1239                 }
1240         }
1241 }
1242
1243 void i810_driver_reclaim_buffers_locked(struct drm_device * dev,
1244                                         struct drm_file *file_priv)
1245 {
1246         i810_reclaim_buffers(dev, file_priv);
1247 }
1248
1249 int i810_driver_dma_quiescent(struct drm_device * dev)
1250 {
1251         i810_dma_quiescent(dev);
1252         return 0;
1253 }
1254
1255 struct drm_ioctl_desc i810_ioctls[] = {
1256         DRM_IOCTL_DEF(DRM_I810_INIT, i810_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1257         DRM_IOCTL_DEF(DRM_I810_VERTEX, i810_dma_vertex, DRM_AUTH),
1258         DRM_IOCTL_DEF(DRM_I810_CLEAR, i810_clear_bufs, DRM_AUTH),
1259         DRM_IOCTL_DEF(DRM_I810_FLUSH, i810_flush_ioctl, DRM_AUTH),
1260         DRM_IOCTL_DEF(DRM_I810_GETAGE, i810_getage, DRM_AUTH),
1261         DRM_IOCTL_DEF(DRM_I810_GETBUF, i810_getbuf, DRM_AUTH),
1262         DRM_IOCTL_DEF(DRM_I810_SWAP, i810_swap_bufs, DRM_AUTH),
1263         DRM_IOCTL_DEF(DRM_I810_COPY, i810_copybuf, DRM_AUTH),
1264         DRM_IOCTL_DEF(DRM_I810_DOCOPY, i810_docopy, DRM_AUTH),
1265         DRM_IOCTL_DEF(DRM_I810_OV0INFO, i810_ov0_info, DRM_AUTH),
1266         DRM_IOCTL_DEF(DRM_I810_FSTATUS, i810_fstatus, DRM_AUTH),
1267         DRM_IOCTL_DEF(DRM_I810_OV0FLIP, i810_ov0_flip, DRM_AUTH),
1268         DRM_IOCTL_DEF(DRM_I810_MC, i810_dma_mc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1269         DRM_IOCTL_DEF(DRM_I810_RSTATUS, i810_rstatus, DRM_AUTH),
1270         DRM_IOCTL_DEF(DRM_I810_FLIP, i810_flip_bufs, DRM_AUTH)
1271 };
1272
1273 int i810_max_ioctl = DRM_ARRAY_SIZE(i810_ioctls);
1274
1275 /**
1276  * Determine if the device really is AGP or not.
1277  *
1278  * All Intel graphics chipsets are treated as AGP, even if they are really
1279  * PCI-e.
1280  *
1281  * \param dev   The device to be tested.
1282  *
1283  * \returns
1284  * A value of 1 is always retured to indictate every i810 is AGP.
1285  */
1286 int i810_driver_device_is_agp(struct drm_device * dev)
1287 {
1288         return 1;
1289 }