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 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/slab.h>
  40 #include <linux/smp_lock.h>
  41 #include <linux/pagemap.h>
  42
  43 #define I810_BUF_FREE           2
  44 #define I810_BUF_CLIENT         1
  45 #define I810_BUF_HARDWARE       0
  46
  47 #define I810_BUF_UNMAPPED 0
  48 #define I810_BUF_MAPPED   1
  49
  50 static struct drm_buf *i810_freelist_get(struct drm_device * dev)
  51 {
  52         struct drm_device_dma *dma = dev->dma;
  53         int i;
  54         int used;
  55
  56         /* Linear search might not be the best solution */
  57
  58         for (i = 0; i < dma->buf_count; i++) {
  59                 struct drm_buf *buf = dma->buflist[i];
  60                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
  61                 /* In use is already a pointer */
  62                 used = cmpxchg(buf_priv->in_use, I810_BUF_FREE,
  63                                I810_BUF_CLIENT);
  64                 if (used == I810_BUF_FREE)
  65                         return buf;
  66         }
  67         return NULL;
  68 }
  69
  70 /* This should only be called if the buffer is not sent to the hardware
  71  * yet, the hardware updates in use for us once its on the ring buffer.
  72  */
  73
  74 static int i810_freelist_put(struct drm_device *dev, struct drm_buf *buf)
  75 {
  76         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
  77         int used;
  78
  79         /* In use is already a pointer */
  80         used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_FREE);
  81         if (used != I810_BUF_CLIENT) {
  82                 DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx);
  83                 return -EINVAL;
  84         }
  85
  86         return 0;
  87 }
  88
  89 static int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
  90 {
  91         struct drm_file *priv = filp->private_data;
  92         struct drm_device *dev;
  93         drm_i810_private_t *dev_priv;
  94         struct drm_buf *buf;
  95         drm_i810_buf_priv_t *buf_priv;
  96
  97         lock_kernel();
  98         dev = priv->minor->dev;
  99         dev_priv = dev->dev_private;
 100         buf = dev_priv->mmap_buffer;
 101         buf_priv = buf->dev_private;
 102
 103         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 104         vma->vm_file = filp;
 105
 106         buf_priv->currently_mapped = I810_BUF_MAPPED;
 107         unlock_kernel();
 108
 109         if (io_remap_pfn_range(vma, vma->vm_start,
 110                                vma->vm_pgoff,
 111                                vma->vm_end - vma->vm_start, vma->vm_page_prot))
 112                 return -EAGAIN;
 113         return 0;
 114 }
 115
 116 static const struct file_operations i810_buffer_fops = {
 117         .open = drm_open,
 118         .release = drm_release,
 119         .unlocked_ioctl = drm_ioctl,
 120         .mmap = i810_mmap_buffers,
 121         .fasync = drm_fasync,
 122 };
 123
 124 static int i810_map_buffer(struct drm_buf *buf, struct drm_file *file_priv)
 125 {
 126         struct drm_device *dev = file_priv->minor->dev;
 127         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 128         drm_i810_private_t *dev_priv = dev->dev_private;
 129         const struct file_operations *old_fops;
 130         int retcode = 0;
 131
 132         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
 133                 return -EINVAL;
 134
 135         down_write(&current->mm->mmap_sem);
 136         old_fops = file_priv->filp->f_op;
 137         file_priv->filp->f_op = &i810_buffer_fops;
 138         dev_priv->mmap_buffer = buf;
 139         buf_priv->virtual = (void *)do_mmap(file_priv->filp, 0, buf->total,
 140                                             PROT_READ | PROT_WRITE,
 141                                             MAP_SHARED, buf->bus_address);
 142         dev_priv->mmap_buffer = NULL;
 143         file_priv->filp->f_op = old_fops;
 144         if (IS_ERR(buf_priv->virtual)) {
 145                 /* Real error */
 146                 DRM_ERROR("mmap error\n");
 147                 retcode = PTR_ERR(buf_priv->virtual);
 148                 buf_priv->virtual = NULL;
 149         }
 150         up_write(&current->mm->mmap_sem);
 151
 152         return retcode;
 153 }
 154
 155 static int i810_unmap_buffer(struct drm_buf *buf)
 156 {
 157         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 158         int retcode = 0;
 159
 160         if (buf_priv->currently_mapped != I810_BUF_MAPPED)
 161                 return -EINVAL;
 162
 163         down_write(&current->mm->mmap_sem);
 164         retcode = do_munmap(current->mm,
 165                             (unsigned long)buf_priv->virtual,
 166                             (size_t) buf->total);
 167         up_write(&current->mm->mmap_sem);
 168
 169         buf_priv->currently_mapped = I810_BUF_UNMAPPED;
 170         buf_priv->virtual = NULL;
 171
 172         return retcode;
 173 }
 174
 175 static int i810_dma_get_buffer(struct drm_device *dev, drm_i810_dma_t *d,
 176                                struct drm_file *file_priv)
 177 {
 178         struct drm_buf *buf;
 179         drm_i810_buf_priv_t *buf_priv;
 180         int retcode = 0;
 181
 182         buf = i810_freelist_get(dev);
 183         if (!buf) {
 184                 retcode = -ENOMEM;
 185                 DRM_DEBUG("retcode=%d\n", retcode);
 186                 return retcode;
 187         }
 188
 189         retcode = i810_map_buffer(buf, file_priv);
 190         if (retcode) {
 191                 i810_freelist_put(dev, buf);
 192                 DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
 193                 return retcode;
 194         }
 195         buf->file_priv = file_priv;
 196         buf_priv = buf->dev_private;
 197         d->granted = 1;
 198         d->request_idx = buf->idx;
 199         d->request_size = buf->total;
 200         d->virtual = buf_priv->virtual;
 201
 202         return retcode;
 203 }
 204
 205 static int i810_dma_cleanup(struct drm_device *dev)
 206 {
 207         struct drm_device_dma *dma = dev->dma;
 208
 209         /* Make sure interrupts are disabled here because the uninstall ioctl
 210          * may not have been called from userspace and after dev_private
 211          * is freed, it's too late.
 212          */
 213         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ) && dev->irq_enabled)
 214                 drm_irq_uninstall(dev);
 215
 216         if (dev->dev_private) {
 217                 int i;
 218                 drm_i810_private_t *dev_priv =
 219                     (drm_i810_private_t *) dev->dev_private;
 220
 221                 if (dev_priv->ring.virtual_start)
 222                         drm_core_ioremapfree(&dev_priv->ring.map, dev);
 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                 kfree(dev->dev_private);
 231                 dev->dev_private = NULL;
 232
 233                 for (i = 0; i < dma->buf_count; i++) {
 234                         struct drm_buf *buf = dma->buflist[i];
 235                         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 236
 237                         if (buf_priv->kernel_virtual && buf->total)
 238                                 drm_core_ioremapfree(&buf_priv->map, dev);
 239                 }
 240         }
 241         return 0;
 242 }
 243
 244 static int i810_wait_ring(struct drm_device *dev, int n)
 245 {
 246         drm_i810_private_t *dev_priv = dev->dev_private;
 247         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
 248         int iters = 0;
 249         unsigned long end;
 250         unsigned int last_head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 251
 252         end = jiffies + (HZ * 3);
 253         while (ring->space < n) {
 254                 ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 255                 ring->space = ring->head - (ring->tail + 8);
 256                 if (ring->space < 0)
 257                         ring->space += ring->Size;
 258
 259                 if (ring->head != last_head) {
 260                         end = jiffies + (HZ * 3);
 261                         last_head = ring->head;
 262                 }
 263
 264                 iters++;
 265                 if (time_before(end, jiffies)) {
 266                         DRM_ERROR("space: %d wanted %d\n", ring->space, n);
 267                         DRM_ERROR("lockup\n");
 268                         goto out_wait_ring;
 269                 }
 270                 udelay(1);
 271         }
 272
 273 out_wait_ring:
 274         return iters;
 275 }
 276
 277 static void i810_kernel_lost_context(struct drm_device *dev)
 278 {
 279         drm_i810_private_t *dev_priv = dev->dev_private;
 280         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
 281
 282         ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 283         ring->tail = I810_READ(LP_RING + RING_TAIL);
 284         ring->space = ring->head - (ring->tail + 8);
 285         if (ring->space < 0)
 286                 ring->space += ring->Size;
 287 }
 288
 289 static int i810_freelist_init(struct drm_device *dev, drm_i810_private_t *dev_priv)
 290 {
 291         struct drm_device_dma *dma = dev->dma;
 292         int my_idx = 24;
 293         u32 *hw_status = (u32 *) (dev_priv->hw_status_page + my_idx);
 294         int i;
 295
 296         if (dma->buf_count > 1019) {
 297                 /* Not enough space in the status page for the freelist */
 298                 return -EINVAL;
 299         }
 300
 301         for (i = 0; i < dma->buf_count; i++) {
 302                 struct drm_buf *buf = dma->buflist[i];
 303                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 304
 305                 buf_priv->in_use = hw_status++;
 306                 buf_priv->my_use_idx = my_idx;
 307                 my_idx += 4;
 308
 309                 *buf_priv->in_use = I810_BUF_FREE;
 310
 311                 buf_priv->map.offset = buf->bus_address;
 312                 buf_priv->map.size = buf->total;
 313                 buf_priv->map.type = _DRM_AGP;
 314                 buf_priv->map.flags = 0;
 315                 buf_priv->map.mtrr = 0;
 316
 317                 drm_core_ioremap(&buf_priv->map, dev);
 318                 buf_priv->kernel_virtual = buf_priv->map.handle;
 319
 320         }
 321         return 0;
 322 }
 323
 324 static int i810_dma_initialize(struct drm_device *dev,
 325                                drm_i810_private_t *dev_priv,
 326                                drm_i810_init_t *init)
 327 {
 328         struct drm_map_list *r_list;
 329         memset(dev_priv, 0, sizeof(drm_i810_private_t));
 330
 331         list_for_each_entry(r_list, &dev->maplist, head) {
 332                 if (r_list->map &&
 333                     r_list->map->type == _DRM_SHM &&
 334                     r_list->map->flags & _DRM_CONTAINS_LOCK) {
 335                         dev_priv->sarea_map = r_list->map;
 336                         break;
 337                 }
 338         }
 339         if (!dev_priv->sarea_map) {
 340                 dev->dev_private = (void *)dev_priv;
 341                 i810_dma_cleanup(dev);
 342                 DRM_ERROR("can not find sarea!\n");
 343                 return -EINVAL;
 344         }
 345         dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
 346         if (!dev_priv->mmio_map) {
 347                 dev->dev_private = (void *)dev_priv;
 348                 i810_dma_cleanup(dev);
 349                 DRM_ERROR("can not find mmio map!\n");
 350                 return -EINVAL;
 351         }
 352         dev->agp_buffer_token = init->buffers_offset;
 353         dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
 354         if (!dev->agp_buffer_map) {
 355                 dev->dev_private = (void *)dev_priv;
 356                 i810_dma_cleanup(dev);
 357                 DRM_ERROR("can not find dma buffer map!\n");
 358                 return -EINVAL;
 359         }
 360
 361         dev_priv->sarea_priv = (drm_i810_sarea_t *)
 362             ((u8 *) dev_priv->sarea_map->handle + init->sarea_priv_offset);
 363
 364         dev_priv->ring.Start = init->ring_start;
 365         dev_priv->ring.End = init->ring_end;
 366         dev_priv->ring.Size = init->ring_size;
 367
 368         dev_priv->ring.map.offset = dev->agp->base + init->ring_start;
 369         dev_priv->ring.map.size = init->ring_size;
 370         dev_priv->ring.map.type = _DRM_AGP;
 371         dev_priv->ring.map.flags = 0;
 372         dev_priv->ring.map.mtrr = 0;
 373
 374         drm_core_ioremap(&dev_priv->ring.map, dev);
 375
 376         if (dev_priv->ring.map.handle == NULL) {
 377                 dev->dev_private = (void *)dev_priv;
 378                 i810_dma_cleanup(dev);
 379                 DRM_ERROR("can not ioremap virtual address for"
 380                           " ring buffer\n");
 381                 return -ENOMEM;
 382         }
 383
 384         dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
 385
 386         dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
 387
 388         dev_priv->w = init->w;
 389         dev_priv->h = init->h;
 390         dev_priv->pitch = init->pitch;
 391         dev_priv->back_offset = init->back_offset;
 392         dev_priv->depth_offset = init->depth_offset;
 393         dev_priv->front_offset = init->front_offset;
 394
 395         dev_priv->overlay_offset = init->overlay_offset;
 396         dev_priv->overlay_physical = init->overlay_physical;
 397
 398         dev_priv->front_di1 = init->front_offset | init->pitch_bits;
 399         dev_priv->back_di1 = init->back_offset | init->pitch_bits;
 400         dev_priv->zi1 = init->depth_offset | init->pitch_bits;
 401
 402         /* Program Hardware Status Page */
 403         dev_priv->hw_status_page =
 404             pci_alloc_consistent(dev->pdev, PAGE_SIZE,
 405                                  &dev_priv->dma_status_page);
 406         if (!dev_priv->hw_status_page) {
 407                 dev->dev_private = (void *)dev_priv;
 408                 i810_dma_cleanup(dev);
 409                 DRM_ERROR("Can not allocate hardware status page\n");
 410                 return -ENOMEM;
 411         }
 412         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
 413         DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
 414
 415         I810_WRITE(0x02080, dev_priv->dma_status_page);
 416         DRM_DEBUG("Enabled hardware status page\n");
 417
 418         /* Now we need to init our freelist */
 419         if (i810_freelist_init(dev, dev_priv) != 0) {
 420                 dev->dev_private = (void *)dev_priv;
 421                 i810_dma_cleanup(dev);
 422                 DRM_ERROR("Not enough space in the status page for"
 423                           " the freelist\n");
 424                 return -ENOMEM;
 425         }
 426         dev->dev_private = (void *)dev_priv;
 427
 428         return 0;
 429 }
 430
 431 static int i810_dma_init(struct drm_device *dev, void *data,
 432                          struct drm_file *file_priv)
 433 {
 434         drm_i810_private_t *dev_priv;
 435         drm_i810_init_t *init = data;
 436         int retcode = 0;
 437
 438         switch (init->func) {
 439         case I810_INIT_DMA_1_4:
 440                 DRM_INFO("Using v1.4 init.\n");
 441                 dev_priv = kmalloc(sizeof(drm_i810_private_t), GFP_KERNEL);
 442                 if (dev_priv == NULL)
 443                         return -ENOMEM;
 444                 retcode = i810_dma_initialize(dev, dev_priv, init);
 445                 break;
 446
 447         case I810_CLEANUP_DMA:
 448                 DRM_INFO("DMA Cleanup\n");
 449                 retcode = i810_dma_cleanup(dev);
 450                 break;
 451         default:
 452                 return -EINVAL;
 453         }
 454
 455         return retcode;
 456 }
 457
 458 /* Most efficient way to verify state for the i810 is as it is
 459  * emitted.  Non-conformant state is silently dropped.
 460  *
 461  * Use 'volatile' & local var tmp to force the emitted values to be
 462  * identical to the verified ones.
 463  */
 464 static void i810EmitContextVerified(struct drm_device *dev,
 465                                     volatile unsigned int *code)
 466 {
 467         drm_i810_private_t *dev_priv = dev->dev_private;
 468         int i, j = 0;
 469         unsigned int tmp;
 470         RING_LOCALS;
 471
 472         BEGIN_LP_RING(I810_CTX_SETUP_SIZE);
 473
 474         OUT_RING(GFX_OP_COLOR_FACTOR);
 475         OUT_RING(code[I810_CTXREG_CF1]);
 476
 477         OUT_RING(GFX_OP_STIPPLE);
 478         OUT_RING(code[I810_CTXREG_ST1]);
 479
 480         for (i = 4; i < I810_CTX_SETUP_SIZE; i++) {
 481                 tmp = code[i];
 482
 483                 if ((tmp & (7 << 29)) == (3 << 29) &&
 484                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
 485                         OUT_RING(tmp);
 486                         j++;
 487                 } else
 488                         printk("constext state dropped!!!\n");
 489         }
 490
 491         if (j & 1)
 492                 OUT_RING(0);
 493
 494         ADVANCE_LP_RING();
 495 }
 496
 497 static void i810EmitTexVerified(struct drm_device *dev, volatile unsigned int *code)
 498 {
 499         drm_i810_private_t *dev_priv = dev->dev_private;
 500         int i, j = 0;
 501         unsigned int tmp;
 502         RING_LOCALS;
 503
 504         BEGIN_LP_RING(I810_TEX_SETUP_SIZE);
 505
 506         OUT_RING(GFX_OP_MAP_INFO);
 507         OUT_RING(code[I810_TEXREG_MI1]);
 508         OUT_RING(code[I810_TEXREG_MI2]);
 509         OUT_RING(code[I810_TEXREG_MI3]);
 510
 511         for (i = 4; i < I810_TEX_SETUP_SIZE; i++) {
 512                 tmp = code[i];
 513
 514                 if ((tmp & (7 << 29)) == (3 << 29) &&
 515                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
 516                         OUT_RING(tmp);
 517                         j++;
 518                 } else
 519                         printk("texture state dropped!!!\n");
 520         }
 521
 522         if (j & 1)
 523                 OUT_RING(0);
 524
 525         ADVANCE_LP_RING();
 526 }
 527
 528 /* Need to do some additional checking when setting the dest buffer.
 529  */
 530 static void i810EmitDestVerified(struct drm_device *dev,
 531                                  volatile unsigned int *code)
 532 {
 533         drm_i810_private_t *dev_priv = dev->dev_private;
 534         unsigned int tmp;
 535         RING_LOCALS;
 536
 537         BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
 538
 539         tmp = code[I810_DESTREG_DI1];
 540         if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
 541                 OUT_RING(CMD_OP_DESTBUFFER_INFO);
 542                 OUT_RING(tmp);
 543         } else
 544                 DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
 545                           tmp, dev_priv->front_di1, dev_priv->back_di1);
 546
 547         /* invarient:
 548          */
 549         OUT_RING(CMD_OP_Z_BUFFER_INFO);
 550         OUT_RING(dev_priv->zi1);
 551
 552         OUT_RING(GFX_OP_DESTBUFFER_VARS);
 553         OUT_RING(code[I810_DESTREG_DV1]);
 554
 555         OUT_RING(GFX_OP_DRAWRECT_INFO);
 556         OUT_RING(code[I810_DESTREG_DR1]);
 557         OUT_RING(code[I810_DESTREG_DR2]);
 558         OUT_RING(code[I810_DESTREG_DR3]);
 559         OUT_RING(code[I810_DESTREG_DR4]);
 560         OUT_RING(0);
 561
 562         ADVANCE_LP_RING();
 563 }
 564
 565 static void i810EmitState(struct drm_device *dev)
 566 {
 567         drm_i810_private_t *dev_priv = dev->dev_private;
 568         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 569         unsigned int dirty = sarea_priv->dirty;
 570
 571         DRM_DEBUG("%x\n", dirty);
 572
 573         if (dirty & I810_UPLOAD_BUFFERS) {
 574                 i810EmitDestVerified(dev, sarea_priv->BufferState);
 575                 sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
 576         }
 577
 578         if (dirty & I810_UPLOAD_CTX) {
 579                 i810EmitContextVerified(dev, sarea_priv->ContextState);
 580                 sarea_priv->dirty &= ~I810_UPLOAD_CTX;
 581         }
 582
 583         if (dirty & I810_UPLOAD_TEX0) {
 584                 i810EmitTexVerified(dev, sarea_priv->TexState[0]);
 585                 sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
 586         }
 587
 588         if (dirty & I810_UPLOAD_TEX1) {
 589                 i810EmitTexVerified(dev, sarea_priv->TexState[1]);
 590                 sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
 591         }
 592 }
 593
 594 /* need to verify
 595  */
 596 static void i810_dma_dispatch_clear(struct drm_device *dev, int flags,
 597                                     unsigned int clear_color,
 598                                     unsigned int clear_zval)
 599 {
 600         drm_i810_private_t *dev_priv = dev->dev_private;
 601         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 602         int nbox = sarea_priv->nbox;
 603         struct drm_clip_rect *pbox = sarea_priv->boxes;
 604         int pitch = dev_priv->pitch;
 605         int cpp = 2;
 606         int i;
 607         RING_LOCALS;
 608
 609         if (dev_priv->current_page == 1) {
 610                 unsigned int tmp = flags;
 611
 612                 flags &= ~(I810_FRONT | I810_BACK);
 613                 if (tmp & I810_FRONT)
 614                         flags |= I810_BACK;
 615                 if (tmp & I810_BACK)
 616                         flags |= I810_FRONT;
 617         }
 618
 619         i810_kernel_lost_context(dev);
 620
 621         if (nbox > I810_NR_SAREA_CLIPRECTS)
 622                 nbox = I810_NR_SAREA_CLIPRECTS;
 623
 624         for (i = 0; i < nbox; i++, pbox++) {
 625                 unsigned int x = pbox->x1;
 626                 unsigned int y = pbox->y1;
 627                 unsigned int width = (pbox->x2 - x) * cpp;
 628                 unsigned int height = pbox->y2 - y;
 629                 unsigned int start = y * pitch + x * cpp;
 630
 631                 if (pbox->x1 > pbox->x2 ||
 632                     pbox->y1 > pbox->y2 ||
 633                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
 634                         continue;
 635
 636                 if (flags & I810_FRONT) {
 637                         BEGIN_LP_RING(6);
 638                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
 639                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
 640                         OUT_RING((height << 16) | width);
 641                         OUT_RING(start);
 642                         OUT_RING(clear_color);
 643                         OUT_RING(0);
 644                         ADVANCE_LP_RING();
 645                 }
 646
 647                 if (flags & I810_BACK) {
 648                         BEGIN_LP_RING(6);
 649                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
 650                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
 651                         OUT_RING((height << 16) | width);
 652                         OUT_RING(dev_priv->back_offset + start);
 653                         OUT_RING(clear_color);
 654                         OUT_RING(0);
 655                         ADVANCE_LP_RING();
 656                 }
 657
 658                 if (flags & I810_DEPTH) {
 659                         BEGIN_LP_RING(6);
 660                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
 661                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
 662                         OUT_RING((height << 16) | width);
 663                         OUT_RING(dev_priv->depth_offset + start);
 664                         OUT_RING(clear_zval);
 665                         OUT_RING(0);
 666                         ADVANCE_LP_RING();
 667                 }
 668         }
 669 }
 670
 671 static void i810_dma_dispatch_swap(struct drm_device *dev)
 672 {
 673         drm_i810_private_t *dev_priv = dev->dev_private;
 674         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 675         int nbox = sarea_priv->nbox;
 676         struct drm_clip_rect *pbox = sarea_priv->boxes;
 677         int pitch = dev_priv->pitch;
 678         int cpp = 2;
 679         int i;
 680         RING_LOCALS;
 681
 682         DRM_DEBUG("swapbuffers\n");
 683
 684         i810_kernel_lost_context(dev);
 685
 686         if (nbox > I810_NR_SAREA_CLIPRECTS)
 687                 nbox = I810_NR_SAREA_CLIPRECTS;
 688
 689         for (i = 0; i < nbox; i++, pbox++) {
 690                 unsigned int w = pbox->x2 - pbox->x1;
 691                 unsigned int h = pbox->y2 - pbox->y1;
 692                 unsigned int dst = pbox->x1 * cpp + pbox->y1 * pitch;
 693                 unsigned int start = dst;
 694
 695                 if (pbox->x1 > pbox->x2 ||
 696                     pbox->y1 > pbox->y2 ||
 697                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
 698                         continue;
 699
 700                 BEGIN_LP_RING(6);
 701                 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4);
 702                 OUT_RING(pitch | (0xCC << 16));
 703                 OUT_RING((h << 16) | (w * cpp));
 704                 if (dev_priv->current_page == 0)
 705                         OUT_RING(dev_priv->front_offset + start);
 706                 else
 707                         OUT_RING(dev_priv->back_offset + start);
 708                 OUT_RING(pitch);
 709                 if (dev_priv->current_page == 0)
 710                         OUT_RING(dev_priv->back_offset + start);
 711                 else
 712                         OUT_RING(dev_priv->front_offset + start);
 713                 ADVANCE_LP_RING();
 714         }
 715 }
 716
 717 static void i810_dma_dispatch_vertex(struct drm_device *dev,
 718                                      struct drm_buf *buf, int discard, int used)
 719 {
 720         drm_i810_private_t *dev_priv = dev->dev_private;
 721         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 722         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 723         struct drm_clip_rect *box = sarea_priv->boxes;
 724         int nbox = sarea_priv->nbox;
 725         unsigned long address = (unsigned long)buf->bus_address;
 726         unsigned long start = address - dev->agp->base;
 727         int i = 0;
 728         RING_LOCALS;
 729
 730         i810_kernel_lost_context(dev);
 731
 732         if (nbox > I810_NR_SAREA_CLIPRECTS)
 733                 nbox = I810_NR_SAREA_CLIPRECTS;
 734
 735         if (used > 4 * 1024)
 736                 used = 0;
 737
 738         if (sarea_priv->dirty)
 739                 i810EmitState(dev);
 740
 741         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
 742                 unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
 743
 744                 *(u32 *) buf_priv->kernel_virtual =
 745                     ((GFX_OP_PRIMITIVE | prim | ((used / 4) - 2)));
 746
 747                 if (used & 4) {
 748                         *(u32 *) ((char *) buf_priv->kernel_virtual + used) = 0;
 749                         used += 4;
 750                 }
 751
 752                 i810_unmap_buffer(buf);
 753         }
 754
 755         if (used) {
 756                 do {
 757                         if (i < nbox) {
 758                                 BEGIN_LP_RING(4);
 759                                 OUT_RING(GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
 760                                          SC_ENABLE);
 761                                 OUT_RING(GFX_OP_SCISSOR_INFO);
 762                                 OUT_RING(box[i].x1 | (box[i].y1 << 16));
 763                                 OUT_RING((box[i].x2 -
 764                                           1) | ((box[i].y2 - 1) << 16));
 765                                 ADVANCE_LP_RING();
 766                         }
 767
 768                         BEGIN_LP_RING(4);
 769                         OUT_RING(CMD_OP_BATCH_BUFFER);
 770                         OUT_RING(start | BB1_PROTECTED);
 771                         OUT_RING(start + used - 4);
 772                         OUT_RING(0);
 773                         ADVANCE_LP_RING();
 774
 775                 } while (++i < nbox);
 776         }
 777
 778         if (discard) {
 779                 dev_priv->counter++;
 780
 781                 (void)cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
 782                               I810_BUF_HARDWARE);
 783
 784                 BEGIN_LP_RING(8);
 785                 OUT_RING(CMD_STORE_DWORD_IDX);
 786                 OUT_RING(20);
 787                 OUT_RING(dev_priv->counter);
 788                 OUT_RING(CMD_STORE_DWORD_IDX);
 789                 OUT_RING(buf_priv->my_use_idx);
 790                 OUT_RING(I810_BUF_FREE);
 791                 OUT_RING(CMD_REPORT_HEAD);
 792                 OUT_RING(0);
 793                 ADVANCE_LP_RING();
 794         }
 795 }
 796
 797 static void i810_dma_dispatch_flip(struct drm_device *dev)
 798 {
 799         drm_i810_private_t *dev_priv = dev->dev_private;
 800         int pitch = dev_priv->pitch;
 801         RING_LOCALS;
 802
 803         DRM_DEBUG("page=%d pfCurrentPage=%d\n",
 804                   dev_priv->current_page,
 805                   dev_priv->sarea_priv->pf_current_page);
 806
 807         i810_kernel_lost_context(dev);
 808
 809         BEGIN_LP_RING(2);
 810         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
 811         OUT_RING(0);
 812         ADVANCE_LP_RING();
 813
 814         BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
 815         /* On i815 at least ASYNC is buggy */
 816         /* pitch<<5 is from 11.2.8 p158,
 817            its the pitch / 8 then left shifted 8,
 818            so (pitch >> 3) << 8 */
 819         OUT_RING(CMD_OP_FRONTBUFFER_INFO | (pitch << 5) /*| ASYNC_FLIP */ );
 820         if (dev_priv->current_page == 0) {
 821                 OUT_RING(dev_priv->back_offset);
 822                 dev_priv->current_page = 1;
 823         } else {
 824                 OUT_RING(dev_priv->front_offset);
 825                 dev_priv->current_page = 0;
 826         }
 827         OUT_RING(0);
 828         ADVANCE_LP_RING();
 829
 830         BEGIN_LP_RING(2);
 831         OUT_RING(CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP);
 832         OUT_RING(0);
 833         ADVANCE_LP_RING();
 834
 835         /* Increment the frame counter.  The client-side 3D driver must
 836          * throttle the framerate by waiting for this value before
 837          * performing the swapbuffer ioctl.
 838          */
 839         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
 840
 841 }
 842
 843 static void i810_dma_quiescent(struct drm_device *dev)
 844 {
 845         drm_i810_private_t *dev_priv = dev->dev_private;
 846         RING_LOCALS;
 847
 848         i810_kernel_lost_context(dev);
 849
 850         BEGIN_LP_RING(4);
 851         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
 852         OUT_RING(CMD_REPORT_HEAD);
 853         OUT_RING(0);
 854         OUT_RING(0);
 855         ADVANCE_LP_RING();
 856
 857         i810_wait_ring(dev, dev_priv->ring.Size - 8);
 858 }
 859
 860 static int i810_flush_queue(struct drm_device *dev)
 861 {
 862         drm_i810_private_t *dev_priv = dev->dev_private;
 863         struct drm_device_dma *dma = dev->dma;
 864         int i, ret = 0;
 865         RING_LOCALS;
 866
 867         i810_kernel_lost_context(dev);
 868
 869         BEGIN_LP_RING(2);
 870         OUT_RING(CMD_REPORT_HEAD);
 871         OUT_RING(0);
 872         ADVANCE_LP_RING();
 873
 874         i810_wait_ring(dev, dev_priv->ring.Size - 8);
 875
 876         for (i = 0; i < dma->buf_count; i++) {
 877                 struct drm_buf *buf = dma->buflist[i];
 878                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 879
 880                 int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
 881                                    I810_BUF_FREE);
 882
 883                 if (used == I810_BUF_HARDWARE)
 884                         DRM_DEBUG("reclaimed from HARDWARE\n");
 885                 if (used == I810_BUF_CLIENT)
 886                         DRM_DEBUG("still on client\n");
 887         }
 888
 889         return ret;
 890 }
 891
 892 /* Must be called with the lock held */
 893 static void i810_reclaim_buffers(struct drm_device *dev,
 894                                  struct drm_file *file_priv)
 895 {
 896         struct drm_device_dma *dma = dev->dma;
 897         int i;
 898
 899         if (!dma)
 900                 return;
 901         if (!dev->dev_private)
 902                 return;
 903         if (!dma->buflist)
 904                 return;
 905
 906         i810_flush_queue(dev);
 907
 908         for (i = 0; i < dma->buf_count; i++) {
 909                 struct drm_buf *buf = dma->buflist[i];
 910                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 911
 912                 if (buf->file_priv == file_priv && buf_priv) {
 913                         int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
 914                                            I810_BUF_FREE);
 915
 916                         if (used == I810_BUF_CLIENT)
 917                                 DRM_DEBUG("reclaimed from client\n");
 918                         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
 919                                 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
 920                 }
 921         }
 922 }
 923
 924 static int i810_flush_ioctl(struct drm_device *dev, void *data,
 925                             struct drm_file *file_priv)
 926 {
 927         LOCK_TEST_WITH_RETURN(dev, file_priv);
 928
 929         i810_flush_queue(dev);
 930         return 0;
 931 }
 932
 933 static int i810_dma_vertex(struct drm_device *dev, void *data,
 934                            struct drm_file *file_priv)
 935 {
 936         struct drm_device_dma *dma = dev->dma;
 937         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
 938         u32 *hw_status = dev_priv->hw_status_page;
 939         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
 940             dev_priv->sarea_priv;
 941         drm_i810_vertex_t *vertex = data;
 942
 943         LOCK_TEST_WITH_RETURN(dev, file_priv);
 944
 945         DRM_DEBUG("idx %d used %d discard %d\n",
 946                   vertex->idx, vertex->used, vertex->discard);
 947
 948         if (vertex->idx < 0 || vertex->idx > dma->buf_count)
 949                 return -EINVAL;
 950
 951         i810_dma_dispatch_vertex(dev,
 952                                  dma->buflist[vertex->idx],
 953                                  vertex->discard, vertex->used);
 954
 955         atomic_add(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]);
 956         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
 957         sarea_priv->last_enqueue = dev_priv->counter - 1;
 958         sarea_priv->last_dispatch = (int)hw_status[5];
 959
 960         return 0;
 961 }
 962
 963 static int i810_clear_bufs(struct drm_device *dev, void *data,
 964                            struct drm_file *file_priv)
 965 {
 966         drm_i810_clear_t *clear = data;
 967
 968         LOCK_TEST_WITH_RETURN(dev, file_priv);
 969
 970         /* GH: Someone's doing nasty things... */
 971         if (!dev->dev_private)
 972                 return -EINVAL;
 973
 974         i810_dma_dispatch_clear(dev, clear->flags,
 975                                 clear->clear_color, clear->clear_depth);
 976         return 0;
 977 }
 978
 979 static int i810_swap_bufs(struct drm_device *dev, void *data,
 980                           struct drm_file *file_priv)
 981 {
 982         DRM_DEBUG("\n");
 983
 984         LOCK_TEST_WITH_RETURN(dev, file_priv);
 985
 986         i810_dma_dispatch_swap(dev);
 987         return 0;
 988 }
 989
 990 static int i810_getage(struct drm_device *dev, void *data,
 991                        struct drm_file *file_priv)
 992 {
 993         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
 994         u32 *hw_status = dev_priv->hw_status_page;
 995         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
 996             dev_priv->sarea_priv;
 997
 998         sarea_priv->last_dispatch = (int)hw_status[5];
 999         return 0;
1000 }
1001
1002 static int i810_getbuf(struct drm_device *dev, void *data,
1003                        struct drm_file *file_priv)
1004 {
1005         int retcode = 0;
1006         drm_i810_dma_t *d = data;
1007         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1008         u32 *hw_status = dev_priv->hw_status_page;
1009         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1010             dev_priv->sarea_priv;
1011
1012         LOCK_TEST_WITH_RETURN(dev, file_priv);
1013
1014         d->granted = 0;
1015
1016         retcode = i810_dma_get_buffer(dev, d, file_priv);
1017
1018         DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
1019                   task_pid_nr(current), retcode, d->granted);
1020
1021         sarea_priv->last_dispatch = (int)hw_status[5];
1022
1023         return retcode;
1024 }
1025
1026 static int i810_copybuf(struct drm_device *dev, void *data,
1027                         struct drm_file *file_priv)
1028 {
1029         /* Never copy - 2.4.x doesn't need it */
1030         return 0;
1031 }
1032
1033 static int i810_docopy(struct drm_device *dev, void *data,
1034                         struct drm_file *file_priv)
1035 {
1036         /* Never copy - 2.4.x doesn't need it */
1037         return 0;
1038 }
1039
1040 static void i810_dma_dispatch_mc(struct drm_device *dev, struct drm_buf *buf, int used,
1041                                  unsigned int last_render)
1042 {
1043         drm_i810_private_t *dev_priv = dev->dev_private;
1044         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
1045         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
1046         unsigned long address = (unsigned long)buf->bus_address;
1047         unsigned long start = address - dev->agp->base;
1048         int u;
1049         RING_LOCALS;
1050
1051         i810_kernel_lost_context(dev);
1052
1053         u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_HARDWARE);
1054         if (u != I810_BUF_CLIENT)
1055                 DRM_DEBUG("MC found buffer that isn't mine!\n");
1056
1057         if (used > 4 * 1024)
1058                 used = 0;
1059
1060         sarea_priv->dirty = 0x7f;
1061
1062         DRM_DEBUG("addr 0x%lx, used 0x%x\n", address, used);
1063
1064         dev_priv->counter++;
1065         DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1066         DRM_DEBUG("start : %lx\n", start);
1067         DRM_DEBUG("used : %d\n", used);
1068         DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1069
1070         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
1071                 if (used & 4) {
1072                         *(u32 *) ((char *) buf_priv->virtual + used) = 0;
1073                         used += 4;
1074                 }
1075
1076                 i810_unmap_buffer(buf);
1077         }
1078         BEGIN_LP_RING(4);
1079         OUT_RING(CMD_OP_BATCH_BUFFER);
1080         OUT_RING(start | BB1_PROTECTED);
1081         OUT_RING(start + used - 4);
1082         OUT_RING(0);
1083         ADVANCE_LP_RING();
1084
1085         BEGIN_LP_RING(8);
1086         OUT_RING(CMD_STORE_DWORD_IDX);
1087         OUT_RING(buf_priv->my_use_idx);
1088         OUT_RING(I810_BUF_FREE);
1089         OUT_RING(0);
1090
1091         OUT_RING(CMD_STORE_DWORD_IDX);
1092         OUT_RING(16);
1093         OUT_RING(last_render);
1094         OUT_RING(0);
1095         ADVANCE_LP_RING();
1096 }
1097
1098 static int i810_dma_mc(struct drm_device *dev, void *data,
1099                        struct drm_file *file_priv)
1100 {
1101         struct drm_device_dma *dma = dev->dma;
1102         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1103         u32 *hw_status = dev_priv->hw_status_page;
1104         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1105             dev_priv->sarea_priv;
1106         drm_i810_mc_t *mc = data;
1107
1108         LOCK_TEST_WITH_RETURN(dev, file_priv);
1109
1110         if (mc->idx >= dma->buf_count || mc->idx < 0)
1111                 return -EINVAL;
1112
1113         i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used,
1114                              mc->last_render);
1115
1116         atomic_add(mc->used, &dev->counts[_DRM_STAT_SECONDARY]);
1117         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1118         sarea_priv->last_enqueue = dev_priv->counter - 1;
1119         sarea_priv->last_dispatch = (int)hw_status[5];
1120
1121         return 0;
1122 }
1123
1124 static int i810_rstatus(struct drm_device *dev, void *data,
1125                         struct drm_file *file_priv)
1126 {
1127         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1128
1129         return (int)(((u32 *) (dev_priv->hw_status_page))[4]);
1130 }
1131
1132 static int i810_ov0_info(struct drm_device *dev, void *data,
1133                          struct drm_file *file_priv)
1134 {
1135         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1136         drm_i810_overlay_t *ov = data;
1137
1138         ov->offset = dev_priv->overlay_offset;
1139         ov->physical = dev_priv->overlay_physical;
1140
1141         return 0;
1142 }
1143
1144 static int i810_fstatus(struct drm_device *dev, void *data,
1145                         struct drm_file *file_priv)
1146 {
1147         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1148
1149         LOCK_TEST_WITH_RETURN(dev, file_priv);
1150         return I810_READ(0x30008);
1151 }
1152
1153 static int i810_ov0_flip(struct drm_device *dev, void *data,
1154                          struct drm_file *file_priv)
1155 {
1156         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1157
1158         LOCK_TEST_WITH_RETURN(dev, file_priv);
1159
1160         /* Tell the overlay to update */
1161         I810_WRITE(0x30000, dev_priv->overlay_physical | 0x80000000);
1162
1163         return 0;
1164 }
1165
1166 /* Not sure why this isn't set all the time:
1167  */
1168 static void i810_do_init_pageflip(struct drm_device *dev)
1169 {
1170         drm_i810_private_t *dev_priv = dev->dev_private;
1171
1172         DRM_DEBUG("\n");
1173         dev_priv->page_flipping = 1;
1174         dev_priv->current_page = 0;
1175         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1176 }
1177
1178 static int i810_do_cleanup_pageflip(struct drm_device *dev)
1179 {
1180         drm_i810_private_t *dev_priv = dev->dev_private;
1181
1182         DRM_DEBUG("\n");
1183         if (dev_priv->current_page != 0)
1184                 i810_dma_dispatch_flip(dev);
1185
1186         dev_priv->page_flipping = 0;
1187         return 0;
1188 }
1189
1190 static int i810_flip_bufs(struct drm_device *dev, void *data,
1191                           struct drm_file *file_priv)
1192 {
1193         drm_i810_private_t *dev_priv = dev->dev_private;
1194
1195         DRM_DEBUG("\n");
1196
1197         LOCK_TEST_WITH_RETURN(dev, file_priv);
1198
1199         if (!dev_priv->page_flipping)
1200                 i810_do_init_pageflip(dev);
1201
1202         i810_dma_dispatch_flip(dev);
1203         return 0;
1204 }
1205
1206 int i810_driver_load(struct drm_device *dev, unsigned long flags)
1207 {
1208         /* i810 has 4 more counters */
1209         dev->counters += 4;
1210         dev->types[6] = _DRM_STAT_IRQ;
1211         dev->types[7] = _DRM_STAT_PRIMARY;
1212         dev->types[8] = _DRM_STAT_SECONDARY;
1213         dev->types[9] = _DRM_STAT_DMA;
1214
1215         return 0;
1216 }
1217
1218 void i810_driver_lastclose(struct drm_device *dev)
1219 {
1220         i810_dma_cleanup(dev);
1221 }
1222
1223 void i810_driver_preclose(struct drm_device *dev, struct drm_file *file_priv)
1224 {
1225         if (dev->dev_private) {
1226                 drm_i810_private_t *dev_priv = dev->dev_private;
1227                 if (dev_priv->page_flipping)
1228                         i810_do_cleanup_pageflip(dev);
1229         }
1230 }
1231
1232 void i810_driver_reclaim_buffers_locked(struct drm_device *dev,
1233                                         struct drm_file *file_priv)
1234 {
1235         i810_reclaim_buffers(dev, file_priv);
1236 }
1237
1238 int i810_driver_dma_quiescent(struct drm_device *dev)
1239 {
1240         i810_dma_quiescent(dev);
1241         return 0;
1242 }
1243
1244 /*
1245  * call the drm_ioctl under the big kernel lock because
1246  * to lock against the i810_mmap_buffers function.
1247  */
1248 long i810_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1249 {
1250         int ret;
1251         lock_kernel();
1252         ret = drm_ioctl(file, cmd, arg);
1253         unlock_kernel();
1254         return ret;
1255 }
1256
1257 struct drm_ioctl_desc i810_ioctls[] = {
1258         DRM_IOCTL_DEF_DRV(I810_INIT, i810_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1259         DRM_IOCTL_DEF_DRV(I810_VERTEX, i810_dma_vertex, DRM_AUTH|DRM_UNLOCKED),
1260         DRM_IOCTL_DEF_DRV(I810_CLEAR, i810_clear_bufs, DRM_AUTH|DRM_UNLOCKED),
1261         DRM_IOCTL_DEF_DRV(I810_FLUSH, i810_flush_ioctl, DRM_AUTH|DRM_UNLOCKED),
1262         DRM_IOCTL_DEF_DRV(I810_GETAGE, i810_getage, DRM_AUTH|DRM_UNLOCKED),
1263         DRM_IOCTL_DEF_DRV(I810_GETBUF, i810_getbuf, DRM_AUTH|DRM_UNLOCKED),
1264         DRM_IOCTL_DEF_DRV(I810_SWAP, i810_swap_bufs, DRM_AUTH|DRM_UNLOCKED),
1265         DRM_IOCTL_DEF_DRV(I810_COPY, i810_copybuf, DRM_AUTH|DRM_UNLOCKED),
1266         DRM_IOCTL_DEF_DRV(I810_DOCOPY, i810_docopy, DRM_AUTH|DRM_UNLOCKED),
1267         DRM_IOCTL_DEF_DRV(I810_OV0INFO, i810_ov0_info, DRM_AUTH|DRM_UNLOCKED),
1268         DRM_IOCTL_DEF_DRV(I810_FSTATUS, i810_fstatus, DRM_AUTH|DRM_UNLOCKED),
1269         DRM_IOCTL_DEF_DRV(I810_OV0FLIP, i810_ov0_flip, DRM_AUTH|DRM_UNLOCKED),
1270         DRM_IOCTL_DEF_DRV(I810_MC, i810_dma_mc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED),
1271         DRM_IOCTL_DEF_DRV(I810_RSTATUS, i810_rstatus, DRM_AUTH|DRM_UNLOCKED),
1272         DRM_IOCTL_DEF_DRV(I810_FLIP, i810_flip_bufs, DRM_AUTH|DRM_UNLOCKED),
1273 };
1274
1275 int i810_max_ioctl = DRM_ARRAY_SIZE(i810_ioctls);
1276
1277 /**
1278  * Determine if the device really is AGP or not.
1279  *
1280  * All Intel graphics chipsets are treated as AGP, even if they are really
1281  * PCI-e.
1282  *
1283  * \param dev   The device to be tested.
1284  *
1285  * \returns
1286  * A value of 1 is always retured to indictate every i810 is AGP.
1287  */
1288 int i810_driver_device_is_agp(struct drm_device *dev)
1289 {
1290         return 1;
1291 }