linux-core/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 <linux/interrupt.h>    /* For task queue support */
  34 #include <linux/delay.h>
  35 #include <linux/pagemap.h>
  36
  37 #include "drmP.h"
  38 #include "drm.h"
  39 #include "i810_drm.h"
  40 #include "i810_drv.h"
  41
  42 #define I810_BUF_FREE           2
  43 #define I810_BUF_CLIENT         1
  44 #define I810_BUF_HARDWARE       0
  45
  46 #define I810_BUF_UNMAPPED 0
  47 #define I810_BUF_MAPPED   1
  48
  49 static inline void i810_print_status_page(struct drm_device * dev)
  50 {
  51         struct drm_device_dma *dma = dev->dma;
  52         drm_i810_private_t *dev_priv = dev->dev_private;
  53         u32 *temp = dev_priv->hw_status_page;
  54         int i;
  55
  56         DRM_DEBUG("hw_status: Interrupt Status : %x\n", temp[0]);
  57         DRM_DEBUG("hw_status: LpRing Head ptr : %x\n", temp[1]);
  58         DRM_DEBUG("hw_status: IRing Head ptr : %x\n", temp[2]);
  59         DRM_DEBUG("hw_status: Reserved : %x\n", temp[3]);
  60         DRM_DEBUG("hw_status: Last Render: %x\n", temp[4]);
  61         DRM_DEBUG("hw_status: Driver Counter : %d\n", temp[5]);
  62         for (i = 6; i < dma->buf_count + 6; i++) {
  63                 DRM_DEBUG("buffer status idx : %d used: %d\n", i - 6, temp[i]);
  64         }
  65 }
  66
  67 static struct drm_buf *i810_freelist_get(struct drm_device * dev)
  68 {
  69         struct drm_device_dma *dma = dev->dma;
  70         int i;
  71         int used;
  72
  73         /* Linear search might not be the best solution */
  74
  75         for (i = 0; i < dma->buf_count; i++) {
  76                 struct drm_buf *buf = dma->buflist[i];
  77                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
  78                 /* In use is already a pointer */
  79                 used = cmpxchg(buf_priv->in_use, I810_BUF_FREE,
  80                                I810_BUF_CLIENT);
  81                 if (used == I810_BUF_FREE) {
  82                         return buf;
  83                 }
  84         }
  85         return NULL;
  86 }
  87
  88 /* This should only be called if the buffer is not sent to the hardware
  89  * yet, the hardware updates in use for us once its on the ring buffer.
  90  */
  91
  92 static int i810_freelist_put(struct drm_device * dev, struct drm_buf * buf)
  93 {
  94         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
  95         int used;
  96
  97         /* In use is already a pointer */
  98         used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_FREE);
  99         if (used != I810_BUF_CLIENT) {
 100                 DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx);
 101                 return -EINVAL;
 102         }
 103
 104         return 0;
 105 }
 106
 107 static int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
 108 {
 109         struct drm_file *priv = filp->private_data;
 110         struct drm_device *dev;
 111         drm_i810_private_t *dev_priv;
 112         struct drm_buf *buf;
 113         drm_i810_buf_priv_t *buf_priv;
 114
 115         lock_kernel();
 116         dev = priv->minor->dev;
 117         dev_priv = dev->dev_private;
 118         buf = dev_priv->mmap_buffer;
 119         buf_priv = buf->dev_private;
 120
 121         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 122         vma->vm_file = filp;
 123
 124         buf_priv->currently_mapped = I810_BUF_MAPPED;
 125         unlock_kernel();
 126
 127         if (io_remap_pfn_range(vma, vma->vm_start,
 128                                vma->vm_pgoff,
 129                                vma->vm_end - vma->vm_start, vma->vm_page_prot))
 130                 return -EAGAIN;
 131         return 0;
 132 }
 133
 134 static const struct file_operations i810_buffer_fops = {
 135         .open = drm_open,
 136         .release = drm_release,
 137         .ioctl = drm_ioctl,
 138         .mmap = i810_mmap_buffers,
 139         .fasync = drm_fasync,
 140 };
 141
 142 static int i810_map_buffer(struct drm_buf * buf, struct drm_file *file_priv)
 143 {
 144         struct drm_device *dev = file_priv->minor->dev;
 145         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 146         drm_i810_private_t *dev_priv = dev->dev_private;
 147         const struct file_operations *old_fops;
 148         int retcode = 0;
 149
 150         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
 151                 return -EINVAL;
 152
 153         down_write(&current->mm->mmap_sem);
 154         old_fops = file_priv->filp->f_op;
 155         file_priv->filp->f_op = &i810_buffer_fops;
 156         dev_priv->mmap_buffer = buf;
 157         buf_priv->virtual = (void *)do_mmap(file_priv->filp, 0, buf->total,
 158                                             PROT_READ | PROT_WRITE,
 159                                             MAP_SHARED, buf->bus_address);
 160         dev_priv->mmap_buffer = NULL;
 161         file_priv->filp->f_op = old_fops;
 162         if (IS_ERR(buf_priv->virtual)) {
 163                 /* Real error */
 164                 DRM_ERROR("mmap error\n");
 165                 retcode = PTR_ERR(buf_priv->virtual);
 166                 buf_priv->virtual = NULL;
 167         }
 168         up_write(&current->mm->mmap_sem);
 169
 170         return retcode;
 171 }
 172
 173 static int i810_unmap_buffer(struct drm_buf * buf)
 174 {
 175         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 176         int retcode = 0;
 177
 178         if (buf_priv->currently_mapped != I810_BUF_MAPPED)
 179                 return -EINVAL;
 180
 181         down_write(&current->mm->mmap_sem);
 182         retcode = do_munmap(current->mm,
 183                             (unsigned long)buf_priv->virtual,
 184                             (size_t) buf->total);
 185         up_write(&current->mm->mmap_sem);
 186
 187         buf_priv->currently_mapped = I810_BUF_UNMAPPED;
 188         buf_priv->virtual = NULL;
 189
 190         return retcode;
 191 }
 192
 193 static int i810_dma_get_buffer(struct drm_device * dev, drm_i810_dma_t * d,
 194                                struct drm_file *file_priv)
 195 {
 196         struct drm_buf *buf;
 197         drm_i810_buf_priv_t *buf_priv;
 198         int retcode = 0;
 199
 200         buf = i810_freelist_get(dev);
 201         if (!buf) {
 202                 retcode = -ENOMEM;
 203                 DRM_DEBUG("retcode=%d\n", retcode);
 204                 return retcode;
 205         }
 206
 207         retcode = i810_map_buffer(buf, file_priv);
 208         if (retcode) {
 209                 i810_freelist_put(dev, buf);
 210                 DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
 211                 return retcode;
 212         }
 213         buf->file_priv = file_priv;
 214         buf_priv = buf->dev_private;
 215         d->granted = 1;
 216         d->request_idx = buf->idx;
 217         d->request_size = buf->total;
 218         d->virtual = buf_priv->virtual;
 219
 220         return retcode;
 221 }
 222
 223 static int i810_dma_cleanup(struct drm_device * dev)
 224 {
 225         struct drm_device_dma *dma = dev->dma;
 226
 227         /* Make sure interrupts are disabled here because the uninstall ioctl
 228          * may not have been called from userspace and after dev_private
 229          * is freed, it's too late.
 230          */
 231         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ) && dev->irq_enabled)
 232                 drm_irq_uninstall(dev);
 233
 234         if (dev->dev_private) {
 235                 int i;
 236                 drm_i810_private_t *dev_priv =
 237                     (drm_i810_private_t *) dev->dev_private;
 238
 239                 if (dev_priv->ring.virtual_start) {
 240                         drm_core_ioremapfree(&dev_priv->ring.map, dev);
 241                 }
 242                 if (dev_priv->hw_status_page) {
 243                         pci_free_consistent(dev->pdev, PAGE_SIZE,
 244                                             dev_priv->hw_status_page,
 245                                             dev_priv->dma_status_page);
 246                         /* Need to rewrite hardware status page */
 247                         I810_WRITE(0x02080, 0x1ffff000);
 248                 }
 249                 drm_free(dev->dev_private, sizeof(drm_i810_private_t),
 250                          DRM_MEM_DRIVER);
 251                 dev->dev_private = NULL;
 252
 253                 for (i = 0; i < dma->buf_count; i++) {
 254                         struct drm_buf *buf = dma->buflist[i];
 255                         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 256
 257                         if (buf_priv->kernel_virtual && buf->total)
 258                                 drm_core_ioremapfree(&buf_priv->map, dev);
 259                 }
 260         }
 261         return 0;
 262 }
 263
 264 static int i810_wait_ring(struct drm_device * dev, int n)
 265 {
 266         drm_i810_private_t *dev_priv = dev->dev_private;
 267         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
 268         int iters = 0;
 269         unsigned long end;
 270         unsigned int last_head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 271
 272         end = jiffies + (HZ * 3);
 273         while (ring->space < n) {
 274                 ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 275                 ring->space = ring->head - (ring->tail + 8);
 276                 if (ring->space < 0)
 277                         ring->space += ring->Size;
 278
 279                 if (ring->head != last_head) {
 280                         end = jiffies + (HZ * 3);
 281                         last_head = ring->head;
 282                 }
 283
 284                 iters++;
 285                 if (time_before(end, jiffies)) {
 286                         DRM_ERROR("space: %d wanted %d\n", ring->space, n);
 287                         DRM_ERROR("lockup\n");
 288                         goto out_wait_ring;
 289                 }
 290                 udelay(1);
 291         }
 292
 293       out_wait_ring:
 294         return iters;
 295 }
 296
 297 static void i810_kernel_lost_context(struct drm_device * dev)
 298 {
 299         drm_i810_private_t *dev_priv = dev->dev_private;
 300         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
 301
 302         ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 303         ring->tail = I810_READ(LP_RING + RING_TAIL);
 304         ring->space = ring->head - (ring->tail + 8);
 305         if (ring->space < 0)
 306                 ring->space += ring->Size;
 307 }
 308
 309 static int i810_freelist_init(struct drm_device * dev, drm_i810_private_t * dev_priv)
 310 {
 311         struct drm_device_dma *dma = dev->dma;
 312         int my_idx = 24;
 313         u32 *hw_status = (u32 *) (dev_priv->hw_status_page + my_idx);
 314         int i;
 315
 316         if (dma->buf_count > 1019) {
 317                 /* Not enough space in the status page for the freelist */
 318                 return -EINVAL;
 319         }
 320
 321         for (i = 0; i < dma->buf_count; i++) {
 322                 struct drm_buf *buf = dma->buflist[i];
 323                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 324
 325                 buf_priv->in_use = hw_status++;
 326                 buf_priv->my_use_idx = my_idx;
 327                 my_idx += 4;
 328
 329                 *buf_priv->in_use = I810_BUF_FREE;
 330
 331                 buf_priv->map.offset = buf->bus_address;
 332                 buf_priv->map.size = buf->total;
 333                 buf_priv->map.type = _DRM_AGP;
 334                 buf_priv->map.flags = 0;
 335                 buf_priv->map.mtrr = 0;
 336
 337                 drm_core_ioremap(&buf_priv->map, dev);
 338                 buf_priv->kernel_virtual = buf_priv->map.handle;
 339
 340         }
 341         return 0;
 342 }
 343
 344 static int i810_dma_initialize(struct drm_device * dev,
 345                                drm_i810_private_t * dev_priv,
 346                                drm_i810_init_t * init)
 347 {
 348         struct drm_map_list *r_list;
 349         memset(dev_priv, 0, sizeof(drm_i810_private_t));
 350
 351         list_for_each_entry(r_list, &dev->maplist, head) {
 352                 if (r_list->map &&
 353                     r_list->map->type == _DRM_SHM &&
 354                     r_list->map->flags & _DRM_CONTAINS_LOCK) {
 355                         dev_priv->sarea_map = r_list->map;
 356                         break;
 357                 }
 358         }
 359         if (!dev_priv->sarea_map) {
 360                 dev->dev_private = (void *)dev_priv;
 361                 i810_dma_cleanup(dev);
 362                 DRM_ERROR("can not find sarea!\n");
 363                 return -EINVAL;
 364         }
 365         dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
 366         if (!dev_priv->mmio_map) {
 367                 dev->dev_private = (void *)dev_priv;
 368                 i810_dma_cleanup(dev);
 369                 DRM_ERROR("can not find mmio map!\n");
 370                 return -EINVAL;
 371         }
 372         dev->agp_buffer_token = init->buffers_offset;
 373         dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
 374         if (!dev->agp_buffer_map) {
 375                 dev->dev_private = (void *)dev_priv;
 376                 i810_dma_cleanup(dev);
 377                 DRM_ERROR("can not find dma buffer map!\n");
 378                 return -EINVAL;
 379         }
 380
 381         dev_priv->sarea_priv = (drm_i810_sarea_t *)
 382             ((u8 *) dev_priv->sarea_map->handle + init->sarea_priv_offset);
 383
 384         dev_priv->ring.Start = init->ring_start;
 385         dev_priv->ring.End = init->ring_end;
 386         dev_priv->ring.Size = init->ring_size;
 387
 388         dev_priv->ring.map.offset = dev->agp->base + init->ring_start;
 389         dev_priv->ring.map.size = init->ring_size;
 390         dev_priv->ring.map.type = _DRM_AGP;
 391         dev_priv->ring.map.flags = 0;
 392         dev_priv->ring.map.mtrr = 0;
 393
 394         drm_core_ioremap(&dev_priv->ring.map, dev);
 395
 396         if (dev_priv->ring.map.handle == NULL) {
 397                 dev->dev_private = (void *)dev_priv;
 398                 i810_dma_cleanup(dev);
 399                 DRM_ERROR("can not ioremap virtual address for"
 400                           " ring buffer\n");
 401                 return -ENOMEM;
 402         }
 403
 404         dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
 405
 406         dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
 407
 408         dev_priv->w = init->w;
 409         dev_priv->h = init->h;
 410         dev_priv->pitch = init->pitch;
 411         dev_priv->back_offset = init->back_offset;
 412         dev_priv->depth_offset = init->depth_offset;
 413         dev_priv->front_offset = init->front_offset;
 414
 415         dev_priv->overlay_offset = init->overlay_offset;
 416         dev_priv->overlay_physical = init->overlay_physical;
 417
 418         dev_priv->front_di1 = init->front_offset | init->pitch_bits;
 419         dev_priv->back_di1 = init->back_offset | init->pitch_bits;
 420         dev_priv->zi1 = init->depth_offset | init->pitch_bits;
 421
 422         /* Program Hardware Status Page */
 423         dev_priv->hw_status_page =
 424             pci_alloc_consistent(dev->pdev, PAGE_SIZE,
 425                                  &dev_priv->dma_status_page);
 426         if (!dev_priv->hw_status_page) {
 427                 dev->dev_private = (void *)dev_priv;
 428                 i810_dma_cleanup(dev);
 429                 DRM_ERROR("Can not allocate hardware status page\n");
 430                 return -ENOMEM;
 431         }
 432         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
 433         DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
 434
 435         I810_WRITE(0x02080, dev_priv->dma_status_page);
 436         DRM_DEBUG("Enabled hardware status page\n");
 437
 438         /* Now we need to init our freelist */
 439         if (i810_freelist_init(dev, dev_priv) != 0) {
 440                 dev->dev_private = (void *)dev_priv;
 441                 i810_dma_cleanup(dev);
 442                 DRM_ERROR("Not enough space in the status page for"
 443                           " the freelist\n");
 444                 return -ENOMEM;
 445         }
 446         dev->dev_private = (void *)dev_priv;
 447
 448         return 0;
 449 }
 450
 451 static int i810_dma_init(struct drm_device *dev, void *data,
 452                          struct drm_file *file_priv)
 453 {
 454         drm_i810_private_t *dev_priv;
 455         drm_i810_init_t *init = data;
 456         int retcode = 0;
 457
 458         switch (init->func) {
 459         case I810_INIT_DMA_1_4:
 460                 DRM_INFO("Using v1.4 init.\n");
 461                 dev_priv = drm_alloc(sizeof(drm_i810_private_t),
 462                                      DRM_MEM_DRIVER);
 463                 if (dev_priv == NULL)
 464                         return -ENOMEM;
 465                 retcode = i810_dma_initialize(dev, dev_priv, init);
 466                 break;
 467
 468         case I810_CLEANUP_DMA:
 469                 DRM_INFO("DMA Cleanup\n");
 470                 retcode = i810_dma_cleanup(dev);
 471                 break;
 472         default:
 473                 return -EINVAL;
 474         }
 475
 476         return retcode;
 477 }
 478
 479 /* Most efficient way to verify state for the i810 is as it is
 480  * emitted.  Non-conformant state is silently dropped.
 481  *
 482  * Use 'volatile' & local var tmp to force the emitted values to be
 483  * identical to the verified ones.
 484  */
 485 static void i810EmitContextVerified(struct drm_device * dev,
 486                                     volatile unsigned int *code)
 487 {
 488         drm_i810_private_t *dev_priv = dev->dev_private;
 489         int i, j = 0;
 490         unsigned int tmp;
 491         RING_LOCALS;
 492
 493         BEGIN_LP_RING(I810_CTX_SETUP_SIZE);
 494
 495         OUT_RING(GFX_OP_COLOR_FACTOR);
 496         OUT_RING(code[I810_CTXREG_CF1]);
 497
 498         OUT_RING(GFX_OP_STIPPLE);
 499         OUT_RING(code[I810_CTXREG_ST1]);
 500
 501         for (i = 4; i < I810_CTX_SETUP_SIZE; i++) {
 502                 tmp = code[i];
 503
 504                 if ((tmp & (7 << 29)) == (3 << 29) &&
 505                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
 506                         OUT_RING(tmp);
 507                         j++;
 508                 } else
 509                         printk("constext state dropped!!!\n");
 510         }
 511
 512         if (j & 1)
 513                 OUT_RING(0);
 514
 515         ADVANCE_LP_RING();
 516 }
 517
 518 static void i810EmitTexVerified(struct drm_device * dev, volatile unsigned int *code)
 519 {
 520         drm_i810_private_t *dev_priv = dev->dev_private;
 521         int i, j = 0;
 522         unsigned int tmp;
 523         RING_LOCALS;
 524
 525         BEGIN_LP_RING(I810_TEX_SETUP_SIZE);
 526
 527         OUT_RING(GFX_OP_MAP_INFO);
 528         OUT_RING(code[I810_TEXREG_MI1]);
 529         OUT_RING(code[I810_TEXREG_MI2]);
 530         OUT_RING(code[I810_TEXREG_MI3]);
 531
 532         for (i = 4; i < I810_TEX_SETUP_SIZE; i++) {
 533                 tmp = code[i];
 534
 535                 if ((tmp & (7 << 29)) == (3 << 29) &&
 536                     (tmp & (0x1f << 24)) < (0x1d << 24)) {
 537                         OUT_RING(tmp);
 538                         j++;
 539                 } else
 540                         printk("texture state dropped!!!\n");
 541         }
 542
 543         if (j & 1)
 544                 OUT_RING(0);
 545
 546         ADVANCE_LP_RING();
 547 }
 548
 549 /* Need to do some additional checking when setting the dest buffer.
 550  */
 551 static void i810EmitDestVerified(struct drm_device * dev,
 552                                  volatile unsigned int *code)
 553 {
 554         drm_i810_private_t *dev_priv = dev->dev_private;
 555         unsigned int tmp;
 556         RING_LOCALS;
 557
 558         BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
 559
 560         tmp = code[I810_DESTREG_DI1];
 561         if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
 562                 OUT_RING(CMD_OP_DESTBUFFER_INFO);
 563                 OUT_RING(tmp);
 564         } else
 565                 DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
 566                           tmp, dev_priv->front_di1, dev_priv->back_di1);
 567
 568         /* invarient:
 569          */
 570         OUT_RING(CMD_OP_Z_BUFFER_INFO);
 571         OUT_RING(dev_priv->zi1);
 572
 573         OUT_RING(GFX_OP_DESTBUFFER_VARS);
 574         OUT_RING(code[I810_DESTREG_DV1]);
 575
 576         OUT_RING(GFX_OP_DRAWRECT_INFO);
 577         OUT_RING(code[I810_DESTREG_DR1]);
 578         OUT_RING(code[I810_DESTREG_DR2]);
 579         OUT_RING(code[I810_DESTREG_DR3]);
 580         OUT_RING(code[I810_DESTREG_DR4]);
 581         OUT_RING(0);
 582
 583         ADVANCE_LP_RING();
 584 }
 585
 586 static void i810EmitState(struct drm_device * dev)
 587 {
 588         drm_i810_private_t *dev_priv = dev->dev_private;
 589         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 590         unsigned int dirty = sarea_priv->dirty;
 591
 592         DRM_DEBUG("%x\n", dirty);
 593
 594         if (dirty & I810_UPLOAD_BUFFERS) {
 595                 i810EmitDestVerified(dev, sarea_priv->BufferState);
 596                 sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
 597         }
 598
 599         if (dirty & I810_UPLOAD_CTX) {
 600                 i810EmitContextVerified(dev, sarea_priv->ContextState);
 601                 sarea_priv->dirty &= ~I810_UPLOAD_CTX;
 602         }
 603
 604         if (dirty & I810_UPLOAD_TEX0) {
 605                 i810EmitTexVerified(dev, sarea_priv->TexState[0]);
 606                 sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
 607         }
 608
 609         if (dirty & I810_UPLOAD_TEX1) {
 610                 i810EmitTexVerified(dev, sarea_priv->TexState[1]);
 611                 sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
 612         }
 613 }
 614
 615 /* need to verify
 616  */
 617 static void i810_dma_dispatch_clear(struct drm_device * dev, int flags,
 618                                     unsigned int clear_color,
 619                                     unsigned int clear_zval)
 620 {
 621         drm_i810_private_t *dev_priv = dev->dev_private;
 622         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 623         int nbox = sarea_priv->nbox;
 624         struct drm_clip_rect *pbox = sarea_priv->boxes;
 625         int pitch = dev_priv->pitch;
 626         int cpp = 2;
 627         int i;
 628         RING_LOCALS;
 629
 630         if (dev_priv->current_page == 1) {
 631                 unsigned int tmp = flags;
 632
 633                 flags &= ~(I810_FRONT | I810_BACK);
 634                 if (tmp & I810_FRONT)
 635                         flags |= I810_BACK;
 636                 if (tmp & I810_BACK)
 637                         flags |= I810_FRONT;
 638         }
 639
 640         i810_kernel_lost_context(dev);
 641
 642         if (nbox > I810_NR_SAREA_CLIPRECTS)
 643                 nbox = I810_NR_SAREA_CLIPRECTS;
 644
 645         for (i = 0; i < nbox; i++, pbox++) {
 646                 unsigned int x = pbox->x1;
 647                 unsigned int y = pbox->y1;
 648                 unsigned int width = (pbox->x2 - x) * cpp;
 649                 unsigned int height = pbox->y2 - y;
 650                 unsigned int start = y * pitch + x * cpp;
 651
 652                 if (pbox->x1 > pbox->x2 ||
 653                     pbox->y1 > pbox->y2 ||
 654                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
 655                         continue;
 656
 657                 if (flags & I810_FRONT) {
 658                         BEGIN_LP_RING(6);
 659                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
 660                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
 661                         OUT_RING((height << 16) | width);
 662                         OUT_RING(start);
 663                         OUT_RING(clear_color);
 664                         OUT_RING(0);
 665                         ADVANCE_LP_RING();
 666                 }
 667
 668                 if (flags & I810_BACK) {
 669                         BEGIN_LP_RING(6);
 670                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
 671                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
 672                         OUT_RING((height << 16) | width);
 673                         OUT_RING(dev_priv->back_offset + start);
 674                         OUT_RING(clear_color);
 675                         OUT_RING(0);
 676                         ADVANCE_LP_RING();
 677                 }
 678
 679                 if (flags & I810_DEPTH) {
 680                         BEGIN_LP_RING(6);
 681                         OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
 682                         OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
 683                         OUT_RING((height << 16) | width);
 684                         OUT_RING(dev_priv->depth_offset + start);
 685                         OUT_RING(clear_zval);
 686                         OUT_RING(0);
 687                         ADVANCE_LP_RING();
 688                 }
 689         }
 690 }
 691
 692 static void i810_dma_dispatch_swap(struct drm_device * dev)
 693 {
 694         drm_i810_private_t *dev_priv = dev->dev_private;
 695         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 696         int nbox = sarea_priv->nbox;
 697         struct drm_clip_rect *pbox = sarea_priv->boxes;
 698         int pitch = dev_priv->pitch;
 699         int cpp = 2;
 700         int i;
 701         RING_LOCALS;
 702
 703         DRM_DEBUG("swapbuffers\n");
 704
 705         i810_kernel_lost_context(dev);
 706
 707         if (nbox > I810_NR_SAREA_CLIPRECTS)
 708                 nbox = I810_NR_SAREA_CLIPRECTS;
 709
 710         for (i = 0; i < nbox; i++, pbox++) {
 711                 unsigned int w = pbox->x2 - pbox->x1;
 712                 unsigned int h = pbox->y2 - pbox->y1;
 713                 unsigned int dst = pbox->x1 * cpp + pbox->y1 * pitch;
 714                 unsigned int start = dst;
 715
 716                 if (pbox->x1 > pbox->x2 ||
 717                     pbox->y1 > pbox->y2 ||
 718                     pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
 719                         continue;
 720
 721                 BEGIN_LP_RING(6);
 722                 OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4);
 723                 OUT_RING(pitch | (0xCC << 16));
 724                 OUT_RING((h << 16) | (w * cpp));
 725                 if (dev_priv->current_page == 0)
 726                         OUT_RING(dev_priv->front_offset + start);
 727                 else
 728                         OUT_RING(dev_priv->back_offset + start);
 729                 OUT_RING(pitch);
 730                 if (dev_priv->current_page == 0)
 731                         OUT_RING(dev_priv->back_offset + start);
 732                 else
 733                         OUT_RING(dev_priv->front_offset + start);
 734                 ADVANCE_LP_RING();
 735         }
 736 }
 737
 738 static void i810_dma_dispatch_vertex(struct drm_device * dev,
 739                                      struct drm_buf * buf, int discard, int used)
 740 {
 741         drm_i810_private_t *dev_priv = dev->dev_private;
 742         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 743         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 744         struct drm_clip_rect *box = sarea_priv->boxes;
 745         int nbox = sarea_priv->nbox;
 746         unsigned long address = (unsigned long)buf->bus_address;
 747         unsigned long start = address - dev->agp->base;
 748         int i = 0;
 749         RING_LOCALS;
 750
 751         i810_kernel_lost_context(dev);
 752
 753         if (nbox > I810_NR_SAREA_CLIPRECTS)
 754                 nbox = I810_NR_SAREA_CLIPRECTS;
 755
 756         if (used > 4 * 1024)
 757                 used = 0;
 758
 759         if (sarea_priv->dirty)
 760                 i810EmitState(dev);
 761
 762         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
 763                 unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
 764
 765                 *(u32 *) buf_priv->kernel_virtual =
 766                     ((GFX_OP_PRIMITIVE | prim | ((used / 4) - 2)));
 767
 768                 if (used & 4) {
 769                         *(u32 *) ((char *) buf_priv->kernel_virtual + used) = 0;
 770                         used += 4;
 771                 }
 772
 773                 i810_unmap_buffer(buf);
 774         }
 775
 776         if (used) {
 777                 do {
 778                         if (i < nbox) {
 779                                 BEGIN_LP_RING(4);
 780                                 OUT_RING(GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
 781                                          SC_ENABLE);
 782                                 OUT_RING(GFX_OP_SCISSOR_INFO);
 783                                 OUT_RING(box[i].x1 | (box[i].y1 << 16));
 784                                 OUT_RING((box[i].x2 -
 785                                           1) | ((box[i].y2 - 1) << 16));
 786                                 ADVANCE_LP_RING();
 787                         }
 788
 789                         BEGIN_LP_RING(4);
 790                         OUT_RING(CMD_OP_BATCH_BUFFER);
 791                         OUT_RING(start | BB1_PROTECTED);
 792                         OUT_RING(start + used - 4);
 793                         OUT_RING(0);
 794                         ADVANCE_LP_RING();
 795
 796                 } while (++i < nbox);
 797         }
 798
 799         if (discard) {
 800                 dev_priv->counter++;
 801
 802                 (void)cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
 803                               I810_BUF_HARDWARE);
 804
 805                 BEGIN_LP_RING(8);
 806                 OUT_RING(CMD_STORE_DWORD_IDX);
 807                 OUT_RING(20);
 808                 OUT_RING(dev_priv->counter);
 809                 OUT_RING(CMD_STORE_DWORD_IDX);
 810                 OUT_RING(buf_priv->my_use_idx);
 811                 OUT_RING(I810_BUF_FREE);
 812                 OUT_RING(CMD_REPORT_HEAD);
 813                 OUT_RING(0);
 814                 ADVANCE_LP_RING();
 815         }
 816 }
 817
 818 static void i810_dma_dispatch_flip(struct drm_device * dev)
 819 {
 820         drm_i810_private_t *dev_priv = dev->dev_private;
 821         int pitch = dev_priv->pitch;
 822         RING_LOCALS;
 823
 824         DRM_DEBUG("page=%d pfCurrentPage=%d\n",
 825                   dev_priv->current_page,
 826                   dev_priv->sarea_priv->pf_current_page);
 827
 828         i810_kernel_lost_context(dev);
 829
 830         BEGIN_LP_RING(2);
 831         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
 832         OUT_RING(0);
 833         ADVANCE_LP_RING();
 834
 835         BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
 836         /* On i815 at least ASYNC is buggy */
 837         /* pitch<<5 is from 11.2.8 p158,
 838            its the pitch / 8 then left shifted 8,
 839            so (pitch >> 3) << 8 */
 840         OUT_RING(CMD_OP_FRONTBUFFER_INFO | (pitch << 5) /*| ASYNC_FLIP */ );
 841         if (dev_priv->current_page == 0) {
 842                 OUT_RING(dev_priv->back_offset);
 843                 dev_priv->current_page = 1;
 844         } else {
 845                 OUT_RING(dev_priv->front_offset);
 846                 dev_priv->current_page = 0;
 847         }
 848         OUT_RING(0);
 849         ADVANCE_LP_RING();
 850
 851         BEGIN_LP_RING(2);
 852         OUT_RING(CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP);
 853         OUT_RING(0);
 854         ADVANCE_LP_RING();
 855
 856         /* Increment the frame counter.  The client-side 3D driver must
 857          * throttle the framerate by waiting for this value before
 858          * performing the swapbuffer ioctl.
 859          */
 860         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
 861
 862 }
 863
 864 static void i810_dma_quiescent(struct drm_device * dev)
 865 {
 866         drm_i810_private_t *dev_priv = dev->dev_private;
 867         RING_LOCALS;
 868
 869         i810_kernel_lost_context(dev);
 870
 871         BEGIN_LP_RING(4);
 872         OUT_RING(INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE);
 873         OUT_RING(CMD_REPORT_HEAD);
 874         OUT_RING(0);
 875         OUT_RING(0);
 876         ADVANCE_LP_RING();
 877
 878         i810_wait_ring(dev, dev_priv->ring.Size - 8);
 879 }
 880
 881 static int i810_flush_queue(struct drm_device * dev)
 882 {
 883         drm_i810_private_t *dev_priv = dev->dev_private;
 884         struct drm_device_dma *dma = dev->dma;
 885         int i, ret = 0;
 886         RING_LOCALS;
 887
 888         i810_kernel_lost_context(dev);
 889
 890         BEGIN_LP_RING(2);
 891         OUT_RING(CMD_REPORT_HEAD);
 892         OUT_RING(0);
 893         ADVANCE_LP_RING();
 894
 895         i810_wait_ring(dev, dev_priv->ring.Size - 8);
 896
 897         for (i = 0; i < dma->buf_count; i++) {
 898                 struct drm_buf *buf = dma->buflist[i];
 899                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 900
 901                 int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
 902                                    I810_BUF_FREE);
 903
 904                 if (used == I810_BUF_HARDWARE)
 905                         DRM_DEBUG("reclaimed from HARDWARE\n");
 906                 if (used == I810_BUF_CLIENT)
 907                         DRM_DEBUG("still on client\n");
 908         }
 909
 910         return ret;
 911 }
 912
 913 /* Must be called with the lock held */
 914 static void i810_reclaim_buffers(struct drm_device *dev,
 915                                  struct drm_file *file_priv)
 916 {
 917         struct drm_device_dma *dma = dev->dma;
 918         int i;
 919
 920         if (!dma)
 921                 return;
 922         if (!dev->dev_private)
 923                 return;
 924         if (!dma->buflist)
 925                 return;
 926
 927         i810_flush_queue(dev);
 928
 929         for (i = 0; i < dma->buf_count; i++) {
 930                 struct drm_buf *buf = dma->buflist[i];
 931                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 932
 933                 if (buf->file_priv == file_priv && buf_priv) {
 934                         int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
 935                                            I810_BUF_FREE);
 936
 937                         if (used == I810_BUF_CLIENT)
 938                                 DRM_DEBUG("reclaimed from client\n");
 939                         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
 940                                 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
 941                 }
 942         }
 943 }
 944
 945 static int i810_flush_ioctl(struct drm_device *dev, void *data,
 946                             struct drm_file *file_priv)
 947 {
 948         LOCK_TEST_WITH_RETURN(dev, file_priv);
 949
 950         i810_flush_queue(dev);
 951         return 0;
 952 }
 953
 954 static int i810_dma_vertex(struct drm_device *dev, void *data,
 955                            struct drm_file *file_priv)
 956 {
 957         struct drm_device_dma *dma = dev->dma;
 958         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
 959         u32 *hw_status = dev_priv->hw_status_page;
 960         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
 961             dev_priv->sarea_priv;
 962         drm_i810_vertex_t *vertex = data;
 963
 964         LOCK_TEST_WITH_RETURN(dev, file_priv);
 965
 966         DRM_DEBUG("idx %d used %d discard %d\n",
 967                   vertex->idx, vertex->used, vertex->discard);
 968
 969         if (vertex->idx < 0 || vertex->idx > dma->buf_count)
 970                 return -EINVAL;
 971
 972         i810_dma_dispatch_vertex(dev,
 973                                  dma->buflist[vertex->idx],
 974                                  vertex->discard, vertex->used);
 975
 976         atomic_add(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]);
 977         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
 978         sarea_priv->last_enqueue = dev_priv->counter - 1;
 979         sarea_priv->last_dispatch = (int)hw_status[5];
 980
 981         return 0;
 982 }
 983
 984 static int i810_clear_bufs(struct drm_device *dev, void *data,
 985                            struct drm_file *file_priv)
 986 {
 987         drm_i810_clear_t *clear = data;
 988
 989         LOCK_TEST_WITH_RETURN(dev, file_priv);
 990
 991         /* GH: Someone's doing nasty things... */
 992         if (!dev->dev_private) {
 993                 return -EINVAL;
 994         }
 995
 996         i810_dma_dispatch_clear(dev, clear->flags,
 997                                 clear->clear_color, clear->clear_depth);
 998         return 0;
 999 }
1000
1001 static int i810_swap_bufs(struct drm_device *dev, void *data,
1002                           struct drm_file *file_priv)
1003 {
1004         DRM_DEBUG("\n");
1005
1006         LOCK_TEST_WITH_RETURN(dev, file_priv);
1007
1008         i810_dma_dispatch_swap(dev);
1009         return 0;
1010 }
1011
1012 static int i810_getage(struct drm_device *dev, void *data,
1013                        struct drm_file *file_priv)
1014 {
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         sarea_priv->last_dispatch = (int)hw_status[5];
1021         return 0;
1022 }
1023
1024 static int i810_getbuf(struct drm_device *dev, void *data,
1025                        struct drm_file *file_priv)
1026 {
1027         int retcode = 0;
1028         drm_i810_dma_t *d = data;
1029         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1030         u32 *hw_status = dev_priv->hw_status_page;
1031         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1032             dev_priv->sarea_priv;
1033
1034         LOCK_TEST_WITH_RETURN(dev, file_priv);
1035
1036         d->granted = 0;
1037
1038         retcode = i810_dma_get_buffer(dev, d, file_priv);
1039
1040         DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
1041                   current->pid, retcode, d->granted);
1042
1043         sarea_priv->last_dispatch = (int)hw_status[5];
1044
1045         return retcode;
1046 }
1047
1048 static int i810_copybuf(struct drm_device *dev, void *data,
1049                         struct drm_file *file_priv)
1050 {
1051         /* Never copy - 2.4.x doesn't need it */
1052         return 0;
1053 }
1054
1055 static int i810_docopy(struct drm_device *dev, void *data,
1056                         struct drm_file *file_priv)
1057 {
1058         /* Never copy - 2.4.x doesn't need it */
1059         return 0;
1060 }
1061
1062 static void i810_dma_dispatch_mc(struct drm_device * dev, struct drm_buf * buf, int used,
1063                                  unsigned int last_render)
1064 {
1065         drm_i810_private_t *dev_priv = dev->dev_private;
1066         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
1067         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
1068         unsigned long address = (unsigned long)buf->bus_address;
1069         unsigned long start = address - dev->agp->base;
1070         int u;
1071         RING_LOCALS;
1072
1073         i810_kernel_lost_context(dev);
1074
1075         u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_HARDWARE);
1076         if (u != I810_BUF_CLIENT) {
1077                 DRM_DEBUG("MC found buffer that isn't mine!\n");
1078         }
1079
1080         if (used > 4 * 1024)
1081                 used = 0;
1082
1083         sarea_priv->dirty = 0x7f;
1084
1085         DRM_DEBUG("addr 0x%lx, used 0x%x\n", address, used);
1086
1087         dev_priv->counter++;
1088         DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1089         DRM_DEBUG("start : %lx\n", start);
1090         DRM_DEBUG("used : %d\n", used);
1091         DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1092
1093         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
1094                 if (used & 4) {
1095                         *(u32 *) ((char *) buf_priv->virtual + used) = 0;
1096                         used += 4;
1097                 }
1098
1099                 i810_unmap_buffer(buf);
1100         }
1101         BEGIN_LP_RING(4);
1102         OUT_RING(CMD_OP_BATCH_BUFFER);
1103         OUT_RING(start | BB1_PROTECTED);
1104         OUT_RING(start + used - 4);
1105         OUT_RING(0);
1106         ADVANCE_LP_RING();
1107
1108         BEGIN_LP_RING(8);
1109         OUT_RING(CMD_STORE_DWORD_IDX);
1110         OUT_RING(buf_priv->my_use_idx);
1111         OUT_RING(I810_BUF_FREE);
1112         OUT_RING(0);
1113
1114         OUT_RING(CMD_STORE_DWORD_IDX);
1115         OUT_RING(16);
1116         OUT_RING(last_render);
1117         OUT_RING(0);
1118         ADVANCE_LP_RING();
1119 }
1120
1121 static int i810_dma_mc(struct drm_device *dev, void *data,
1122                        struct drm_file *file_priv)
1123 {
1124         struct drm_device_dma *dma = dev->dma;
1125         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1126         u32 *hw_status = dev_priv->hw_status_page;
1127         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1128             dev_priv->sarea_priv;
1129         drm_i810_mc_t *mc = data;
1130
1131         LOCK_TEST_WITH_RETURN(dev, file_priv);
1132
1133         if (mc->idx >= dma->buf_count || mc->idx < 0)
1134                 return -EINVAL;
1135
1136         i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used,
1137                              mc->last_render);
1138
1139         atomic_add(mc->used, &dev->counts[_DRM_STAT_SECONDARY]);
1140         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1141         sarea_priv->last_enqueue = dev_priv->counter - 1;
1142         sarea_priv->last_dispatch = (int)hw_status[5];
1143
1144         return 0;
1145 }
1146
1147 static int i810_rstatus(struct drm_device *dev, void *data,
1148                         struct drm_file *file_priv)
1149 {
1150         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1151
1152         return (int)(((u32 *) (dev_priv->hw_status_page))[4]);
1153 }
1154
1155 static int i810_ov0_info(struct drm_device *dev, void *data,
1156                          struct drm_file *file_priv)
1157 {
1158         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1159         drm_i810_overlay_t *ov = data;
1160
1161         ov->offset = dev_priv->overlay_offset;
1162         ov->physical = dev_priv->overlay_physical;
1163
1164         return 0;
1165 }
1166
1167 static int i810_fstatus(struct drm_device *dev, void *data,
1168                         struct drm_file *file_priv)
1169 {
1170         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1171
1172         LOCK_TEST_WITH_RETURN(dev, file_priv);
1173         return I810_READ(0x30008);
1174 }
1175
1176 static int i810_ov0_flip(struct drm_device *dev, void *data,
1177                          struct drm_file *file_priv)
1178 {
1179         drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
1180
1181         LOCK_TEST_WITH_RETURN(dev, file_priv);
1182         //Tell the overlay to update
1183         I810_WRITE(0x30000, dev_priv->overlay_physical | 0x80000000);
1184
1185         return 0;
1186 }
1187
1188 /* Not sure why this isn't set all the time:
1189  */
1190 static void i810_do_init_pageflip(struct drm_device * dev)
1191 {
1192         drm_i810_private_t *dev_priv = dev->dev_private;
1193
1194         DRM_DEBUG("\n");
1195         dev_priv->page_flipping = 1;
1196         dev_priv->current_page = 0;
1197         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1198 }
1199
1200 static int i810_do_cleanup_pageflip(struct drm_device * dev)
1201 {
1202         drm_i810_private_t *dev_priv = dev->dev_private;
1203
1204         DRM_DEBUG("\n");
1205         if (dev_priv->current_page != 0)
1206                 i810_dma_dispatch_flip(dev);
1207
1208         dev_priv->page_flipping = 0;
1209         return 0;
1210 }
1211
1212 static int i810_flip_bufs(struct drm_device *dev, void *data,
1213                           struct drm_file *file_priv)
1214 {
1215         drm_i810_private_t *dev_priv = dev->dev_private;
1216
1217         DRM_DEBUG("\n");
1218
1219         LOCK_TEST_WITH_RETURN(dev, file_priv);
1220
1221         if (!dev_priv->page_flipping)
1222                 i810_do_init_pageflip(dev);
1223
1224         i810_dma_dispatch_flip(dev);
1225         return 0;
1226 }
1227
1228 int i810_driver_load(struct drm_device *dev, unsigned long flags)
1229 {
1230         /* i810 has 4 more counters */
1231         dev->counters += 4;
1232         dev->types[6] = _DRM_STAT_IRQ;
1233         dev->types[7] = _DRM_STAT_PRIMARY;
1234         dev->types[8] = _DRM_STAT_SECONDARY;
1235         dev->types[9] = _DRM_STAT_DMA;
1236
1237         return 0;
1238 }
1239
1240 void i810_driver_lastclose(struct drm_device * dev)
1241 {
1242         i810_dma_cleanup(dev);
1243 }
1244
1245 void i810_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
1246 {
1247         if (dev->dev_private) {
1248                 drm_i810_private_t *dev_priv = dev->dev_private;
1249                 if (dev_priv->page_flipping) {
1250                         i810_do_cleanup_pageflip(dev);
1251                 }
1252         }
1253 }
1254
1255 void i810_driver_reclaim_buffers_locked(struct drm_device * dev,
1256                                         struct drm_file *file_priv)
1257 {
1258         i810_reclaim_buffers(dev, file_priv);
1259 }
1260
1261 int i810_driver_dma_quiescent(struct drm_device * dev)
1262 {
1263         i810_dma_quiescent(dev);
1264         return 0;
1265 }
1266
1267 struct drm_ioctl_desc i810_ioctls[] = {
1268         DRM_IOCTL_DEF(DRM_I810_INIT, i810_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1269         DRM_IOCTL_DEF(DRM_I810_VERTEX, i810_dma_vertex, DRM_AUTH),
1270         DRM_IOCTL_DEF(DRM_I810_CLEAR, i810_clear_bufs, DRM_AUTH),
1271         DRM_IOCTL_DEF(DRM_I810_FLUSH, i810_flush_ioctl, DRM_AUTH),
1272         DRM_IOCTL_DEF(DRM_I810_GETAGE, i810_getage, DRM_AUTH),
1273         DRM_IOCTL_DEF(DRM_I810_GETBUF, i810_getbuf, DRM_AUTH),
1274         DRM_IOCTL_DEF(DRM_I810_SWAP, i810_swap_bufs, DRM_AUTH),
1275         DRM_IOCTL_DEF(DRM_I810_COPY, i810_copybuf, DRM_AUTH),
1276         DRM_IOCTL_DEF(DRM_I810_DOCOPY, i810_docopy, DRM_AUTH),
1277         DRM_IOCTL_DEF(DRM_I810_OV0INFO, i810_ov0_info, DRM_AUTH),
1278         DRM_IOCTL_DEF(DRM_I810_FSTATUS, i810_fstatus, DRM_AUTH),
1279         DRM_IOCTL_DEF(DRM_I810_OV0FLIP, i810_ov0_flip, DRM_AUTH),
1280         DRM_IOCTL_DEF(DRM_I810_MC, i810_dma_mc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1281         DRM_IOCTL_DEF(DRM_I810_RSTATUS, i810_rstatus, DRM_AUTH),
1282         DRM_IOCTL_DEF(DRM_I810_FLIP, i810_flip_bufs, DRM_AUTH)
1283 };
1284
1285 int i810_max_ioctl = DRM_ARRAY_SIZE(i810_ioctls);
1286
1287 /**
1288  * Determine if the device really is AGP or not.
1289  *
1290  * All Intel graphics chipsets are treated as AGP, even if they are really
1291  * PCI-e.
1292  *
1293  * \param dev   The device to be tested.
1294  *
1295  * \returns
1296  * A value of 1 is always retured to indictate every i810 is AGP.
1297  */
1298 int i810_driver_device_is_agp(struct drm_device * dev)
1299 {
1300         return 1;
1301 }