drivers/char/drm/i810_dma.c

   1 /* i810_dma.c -- DMA support for the i810 -*- linux-c -*-
   2  * Created: Mon Dec 13 01:50:01 1999 by jhartmann@precisioninsight.com
   3  *
   4  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   5  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  25  * DEALINGS IN THE SOFTWARE.
  26  *
  27  * Authors: Rickard E. (Rik) Faith <faith@valinux.com>
  28  *          Jeff Hartmann <jhartmann@valinux.com>
  29  *          Keith Whitwell <keith@tungstengraphics.com>
  30  *
  31  */
  32
  33 #include "drmP.h"
  34 #include "drm.h"
  35 #include "i810_drm.h"
  36 #include "i810_drv.h"
  37 #include <linux/interrupt.h>    /* For task queue support */
  38 #include <linux/delay.h>
  39 #include <linux/pagemap.h>
  40
  41 #define I810_BUF_FREE           2
  42 #define I810_BUF_CLIENT         1
  43 #define I810_BUF_HARDWARE       0
  44
  45 #define I810_BUF_UNMAPPED 0
  46 #define I810_BUF_MAPPED   1
  47
  48 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,2)
  49 #define down_write down
  50 #define up_write up
  51 #endif
  52
  53 static drm_buf_t *i810_freelist_get(drm_device_t *dev)
  54 {
  55         drm_device_dma_t *dma = dev->dma;
  56         int              i;
  57         int              used;
  58
  59         /* Linear search might not be the best solution */
  60
  61         for (i = 0; i < dma->buf_count; i++) {
  62                 drm_buf_t *buf = dma->buflist[ i ];
  63                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
  64                 /* In use is already a pointer */
  65                 used = cmpxchg(buf_priv->in_use, I810_BUF_FREE,
  66                                I810_BUF_CLIENT);
  67                 if (used == I810_BUF_FREE) {
  68                         return buf;
  69                 }
  70         }
  71         return NULL;
  72 }
  73
  74 /* This should only be called if the buffer is not sent to the hardware
  75  * yet, the hardware updates in use for us once its on the ring buffer.
  76  */
  77
  78 static int i810_freelist_put(drm_device_t *dev, drm_buf_t *buf)
  79 {
  80         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
  81         int used;
  82
  83         /* In use is already a pointer */
  84         used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_FREE);
  85         if (used != I810_BUF_CLIENT) {
  86                 DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx);
  87                 return -EINVAL;
  88         }
  89
  90         return 0;
  91 }
  92
  93 static int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
  94 {
  95         drm_file_t          *priv         = filp->private_data;
  96         drm_device_t        *dev;
  97         drm_i810_private_t  *dev_priv;
  98         drm_buf_t           *buf;
  99         drm_i810_buf_priv_t *buf_priv;
 100
 101         lock_kernel();
 102         dev      = priv->head->dev;
 103         dev_priv = dev->dev_private;
 104         buf      = dev_priv->mmap_buffer;
 105         buf_priv = buf->dev_private;
 106
 107         vma->vm_flags |= (VM_IO | VM_DONTCOPY);
 108         vma->vm_file = filp;
 109
 110         buf_priv->currently_mapped = I810_BUF_MAPPED;
 111         unlock_kernel();
 112
 113         if (io_remap_pfn_range(vma, vma->vm_start,
 114                              VM_OFFSET(vma) >> PAGE_SHIFT,
 115                              vma->vm_end - vma->vm_start,
 116                              vma->vm_page_prot)) return -EAGAIN;
 117         return 0;
 118 }
 119
 120 static struct file_operations i810_buffer_fops = {
 121         .open    = drm_open,
 122         .flush   = drm_flush,
 123         .release = drm_release,
 124         .ioctl   = drm_ioctl,
 125         .mmap    = i810_mmap_buffers,
 126         .fasync  = drm_fasync,
 127 };
 128
 129 static int i810_map_buffer(drm_buf_t *buf, struct file *filp)
 130 {
 131         drm_file_t        *priv   = filp->private_data;
 132         drm_device_t      *dev    = priv->head->dev;
 133         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 134         drm_i810_private_t *dev_priv = dev->dev_private;
 135         struct file_operations *old_fops;
 136         int retcode = 0;
 137
 138         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
 139                 return -EINVAL;
 140
 141         down_write( &current->mm->mmap_sem );
 142         old_fops = filp->f_op;
 143         filp->f_op = &i810_buffer_fops;
 144         dev_priv->mmap_buffer = buf;
 145         buf_priv->virtual = (void *)do_mmap(filp, 0, buf->total,
 146                                             PROT_READ|PROT_WRITE,
 147                                             MAP_SHARED,
 148                                             buf->bus_address);
 149         dev_priv->mmap_buffer = NULL;
 150         filp->f_op = old_fops;
 151         if ((unsigned long)buf_priv->virtual > -1024UL) {
 152                 /* Real error */
 153                 DRM_ERROR("mmap error\n");
 154                 retcode = (signed int)buf_priv->virtual;
 155                 buf_priv->virtual = NULL;
 156         }
 157         up_write( &current->mm->mmap_sem );
 158
 159         return retcode;
 160 }
 161
 162 static int i810_unmap_buffer(drm_buf_t *buf)
 163 {
 164         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 165         int retcode = 0;
 166
 167         if (buf_priv->currently_mapped != I810_BUF_MAPPED)
 168                 return -EINVAL;
 169
 170         down_write(&current->mm->mmap_sem);
 171         retcode = do_munmap(current->mm,
 172                             (unsigned long)buf_priv->virtual,
 173                             (size_t) buf->total);
 174         up_write(&current->mm->mmap_sem);
 175
 176         buf_priv->currently_mapped = I810_BUF_UNMAPPED;
 177         buf_priv->virtual = NULL;
 178
 179         return retcode;
 180 }
 181
 182 static int i810_dma_get_buffer(drm_device_t *dev, drm_i810_dma_t *d,
 183                                struct file *filp)
 184 {
 185         drm_buf_t         *buf;
 186         drm_i810_buf_priv_t *buf_priv;
 187         int retcode = 0;
 188
 189         buf = i810_freelist_get(dev);
 190         if (!buf) {
 191                 retcode = -ENOMEM;
 192                 DRM_DEBUG("retcode=%d\n", retcode);
 193                 return retcode;
 194         }
 195
 196         retcode = i810_map_buffer(buf, filp);
 197         if (retcode) {
 198                 i810_freelist_put(dev, buf);
 199                 DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
 200                 return retcode;
 201         }
 202         buf->filp = filp;
 203         buf_priv = buf->dev_private;
 204         d->granted = 1;
 205         d->request_idx = buf->idx;
 206         d->request_size = buf->total;
 207         d->virtual = buf_priv->virtual;
 208
 209         return retcode;
 210 }
 211
 212 static int i810_dma_cleanup(drm_device_t *dev)
 213 {
 214         drm_device_dma_t *dma = dev->dma;
 215
 216         /* Make sure interrupts are disabled here because the uninstall ioctl
 217          * may not have been called from userspace and after dev_private
 218          * is freed, it's too late.
 219          */
 220         if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ) && dev->irq_enabled)
 221                 drm_irq_uninstall(dev);
 222
 223         if (dev->dev_private) {
 224                 int i;
 225                 drm_i810_private_t *dev_priv =
 226                         (drm_i810_private_t *) dev->dev_private;
 227
 228                 if (dev_priv->ring.virtual_start) {
 229                         drm_ioremapfree((void *) dev_priv->ring.virtual_start,
 230                                          dev_priv->ring.Size, dev);
 231                 }
 232                 if (dev_priv->hw_status_page) {
 233                         pci_free_consistent(dev->pdev, PAGE_SIZE,
 234                                             dev_priv->hw_status_page,
 235                                             dev_priv->dma_status_page);
 236                         /* Need to rewrite hardware status page */
 237                         I810_WRITE(0x02080, 0x1ffff000);
 238                 }
 239                 drm_free(dev->dev_private, sizeof(drm_i810_private_t),
 240                          DRM_MEM_DRIVER);
 241                 dev->dev_private = NULL;
 242
 243                 for (i = 0; i < dma->buf_count; i++) {
 244                         drm_buf_t *buf = dma->buflist[ i ];
 245                         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 246                         if ( buf_priv->kernel_virtual && buf->total )
 247                                 drm_ioremapfree(buf_priv->kernel_virtual, buf->total, dev);
 248                 }
 249         }
 250         return 0;
 251 }
 252
 253 static int i810_wait_ring(drm_device_t *dev, int n)
 254 {
 255         drm_i810_private_t *dev_priv = dev->dev_private;
 256         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
 257         int iters = 0;
 258         unsigned long end;
 259         unsigned int last_head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 260
 261         end = jiffies + (HZ*3);
 262         while (ring->space < n) {
 263                 ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 264                 ring->space = ring->head - (ring->tail+8);
 265                 if (ring->space < 0) ring->space += ring->Size;
 266
 267                 if (ring->head != last_head) {
 268                         end = jiffies + (HZ*3);
 269                         last_head = ring->head;
 270                 }
 271
 272                 iters++;
 273                 if (time_before(end, jiffies)) {
 274                         DRM_ERROR("space: %d wanted %d\n", ring->space, n);
 275                         DRM_ERROR("lockup\n");
 276                         goto out_wait_ring;
 277                 }
 278                 udelay(1);
 279         }
 280
 281 out_wait_ring:
 282         return iters;
 283 }
 284
 285 static void i810_kernel_lost_context(drm_device_t *dev)
 286 {
 287         drm_i810_private_t *dev_priv = dev->dev_private;
 288         drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
 289
 290         ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
 291         ring->tail = I810_READ(LP_RING + RING_TAIL);
 292         ring->space = ring->head - (ring->tail+8);
 293         if (ring->space < 0) ring->space += ring->Size;
 294 }
 295
 296 static int i810_freelist_init(drm_device_t *dev, drm_i810_private_t *dev_priv)
 297 {
 298         drm_device_dma_t *dma = dev->dma;
 299         int my_idx = 24;
 300         u32 *hw_status = (u32 *)(dev_priv->hw_status_page + my_idx);
 301         int i;
 302
 303         if (dma->buf_count > 1019) {
 304                 /* Not enough space in the status page for the freelist */
 305                 return -EINVAL;
 306         }
 307
 308         for (i = 0; i < dma->buf_count; i++) {
 309                 drm_buf_t *buf = dma->buflist[ i ];
 310                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 311
 312                 buf_priv->in_use = hw_status++;
 313                 buf_priv->my_use_idx = my_idx;
 314                 my_idx += 4;
 315
 316                 *buf_priv->in_use = I810_BUF_FREE;
 317
 318                 buf_priv->kernel_virtual = drm_ioremap(buf->bus_address,
 319                                                         buf->total, dev);
 320         }
 321         return 0;
 322 }
 323
 324 static int i810_dma_initialize(drm_device_t *dev,
 325                                drm_i810_private_t *dev_priv,
 326                                drm_i810_init_t *init)
 327 {
 328         struct list_head *list;
 329
 330         memset(dev_priv, 0, sizeof(drm_i810_private_t));
 331
 332         list_for_each(list, &dev->maplist->head) {
 333                 drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
 334                 if (r_list->map &&
 335                     r_list->map->type == _DRM_SHM &&
 336                     r_list->map->flags & _DRM_CONTAINS_LOCK ) {
 337                         dev_priv->sarea_map = r_list->map;
 338                         break;
 339                 }
 340         }
 341         if (!dev_priv->sarea_map) {
 342                 dev->dev_private = (void *)dev_priv;
 343                 i810_dma_cleanup(dev);
 344                 DRM_ERROR("can not find sarea!\n");
 345                 return -EINVAL;
 346         }
 347         dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
 348         if (!dev_priv->mmio_map) {
 349                 dev->dev_private = (void *)dev_priv;
 350                 i810_dma_cleanup(dev);
 351                 DRM_ERROR("can not find mmio map!\n");
 352                 return -EINVAL;
 353         }
 354         dev->agp_buffer_token = init->buffers_offset;
 355         dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
 356         if (!dev->agp_buffer_map) {
 357                 dev->dev_private = (void *)dev_priv;
 358                 i810_dma_cleanup(dev);
 359                 DRM_ERROR("can not find dma buffer map!\n");
 360                 return -EINVAL;
 361         }
 362
 363         dev_priv->sarea_priv = (drm_i810_sarea_t *)
 364                 ((u8 *)dev_priv->sarea_map->handle +
 365                  init->sarea_priv_offset);
 366
 367         dev_priv->ring.Start = init->ring_start;
 368         dev_priv->ring.End = init->ring_end;
 369         dev_priv->ring.Size = init->ring_size;
 370
 371         dev_priv->ring.virtual_start = drm_ioremap(dev->agp->base +
 372                                                     init->ring_start,
 373                                                     init->ring_size, dev);
 374
 375         if (dev_priv->ring.virtual_start == NULL) {
 376                 dev->dev_private = (void *) dev_priv;
 377                 i810_dma_cleanup(dev);
 378                 DRM_ERROR("can not ioremap virtual address for"
 379                           " ring buffer\n");
 380                 return -ENOMEM;
 381         }
 382
 383         dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
 384
 385         dev_priv->w = init->w;
 386         dev_priv->h = init->h;
 387         dev_priv->pitch = init->pitch;
 388         dev_priv->back_offset = init->back_offset;
 389         dev_priv->depth_offset = init->depth_offset;
 390         dev_priv->front_offset = init->front_offset;
 391
 392         dev_priv->overlay_offset = init->overlay_offset;
 393         dev_priv->overlay_physical = init->overlay_physical;
 394
 395         dev_priv->front_di1 = init->front_offset | init->pitch_bits;
 396         dev_priv->back_di1 = init->back_offset | init->pitch_bits;
 397         dev_priv->zi1 = init->depth_offset | init->pitch_bits;
 398
 399         /* Program Hardware Status Page */
 400         dev_priv->hw_status_page =
 401                 pci_alloc_consistent(dev->pdev, PAGE_SIZE,
 402                                                 &dev_priv->dma_status_page);
 403         if (!dev_priv->hw_status_page) {
 404                 dev->dev_private = (void *)dev_priv;
 405                 i810_dma_cleanup(dev);
 406                 DRM_ERROR("Can not allocate hardware status page\n");
 407                 return -ENOMEM;
 408         }
 409         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
 410         DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
 411
 412         I810_WRITE(0x02080, dev_priv->dma_status_page);
 413         DRM_DEBUG("Enabled hardware status page\n");
 414
 415         /* Now we need to init our freelist */
 416         if (i810_freelist_init(dev, dev_priv) != 0) {
 417                 dev->dev_private = (void *)dev_priv;
 418                 i810_dma_cleanup(dev);
 419                 DRM_ERROR("Not enough space in the status page for"
 420                           " the freelist\n");
 421                 return -ENOMEM;
 422         }
 423         dev->dev_private = (void *)dev_priv;
 424
 425         return 0;
 426 }
 427
 428 /* i810 DRM version 1.1 used a smaller init structure with different
 429  * ordering of values than is currently used (drm >= 1.2). There is
 430  * no defined way to detect the XFree version to correct this problem,
 431  * however by checking using this procedure we can detect the correct
 432  * thing to do.
 433  *
 434  * #1 Read the Smaller init structure from user-space
 435  * #2 Verify the overlay_physical is a valid physical address, or NULL
 436  *    If it isn't then we have a v1.1 client. Fix up params.
 437  *    If it is, then we have a 1.2 client... get the rest of the data.
 438  */
 439 static int i810_dma_init_compat(drm_i810_init_t *init, unsigned long arg)
 440 {
 441
 442         /* Get v1.1 init data */
 443         if (copy_from_user(init, (drm_i810_pre12_init_t __user *)arg,
 444                           sizeof(drm_i810_pre12_init_t))) {
 445                 return -EFAULT;
 446         }
 447
 448         if ((!init->overlay_physical) || (init->overlay_physical > 4096)) {
 449
 450                 /* This is a v1.2 client, just get the v1.2 init data */
 451                 DRM_INFO("Using POST v1.2 init.\n");
 452                 if (copy_from_user(init, (drm_i810_init_t __user *)arg,
 453                                    sizeof(drm_i810_init_t))) {
 454                         return -EFAULT;
 455                 }
 456         } else {
 457
 458                 /* This is a v1.1 client, fix the params */
 459                 DRM_INFO("Using PRE v1.2 init.\n");
 460                 init->pitch_bits = init->h;
 461                 init->pitch = init->w;
 462                 init->h = init->overlay_physical;
 463                 init->w = init->overlay_offset;
 464                 init->overlay_physical = 0;
 465                 init->overlay_offset = 0;
 466         }
 467
 468         return 0;
 469 }
 470
 471 static int i810_dma_init(struct inode *inode, struct file *filp,
 472                   unsigned int cmd, unsigned long arg)
 473 {
 474         drm_file_t *priv = filp->private_data;
 475         drm_device_t *dev = priv->head->dev;
 476         drm_i810_private_t *dev_priv;
 477         drm_i810_init_t init;
 478         int retcode = 0;
 479
 480         /* Get only the init func */
 481         if (copy_from_user(&init, (void __user *)arg, sizeof(drm_i810_init_func_t)))
 482                 return -EFAULT;
 483
 484         switch(init.func) {
 485                 case I810_INIT_DMA:
 486                         /* This case is for backward compatibility. It
 487                          * handles XFree 4.1.0 and 4.2.0, and has to
 488                          * do some parameter checking as described below.
 489                          * It will someday go away.
 490                          */
 491                         retcode = i810_dma_init_compat(&init, arg);
 492                         if (retcode)
 493                                 return retcode;
 494
 495                         dev_priv = drm_alloc(sizeof(drm_i810_private_t),
 496                                              DRM_MEM_DRIVER);
 497                         if (dev_priv == NULL)
 498                                 return -ENOMEM;
 499                         retcode = i810_dma_initialize(dev, dev_priv, &init);
 500                         break;
 501
 502                 default:
 503                 case I810_INIT_DMA_1_4:
 504                         DRM_INFO("Using v1.4 init.\n");
 505                         if (copy_from_user(&init, (drm_i810_init_t __user *)arg,
 506                                           sizeof(drm_i810_init_t))) {
 507                                 return -EFAULT;
 508                         }
 509                         dev_priv = drm_alloc(sizeof(drm_i810_private_t),
 510                                              DRM_MEM_DRIVER);
 511                         if (dev_priv == NULL)
 512                                 return -ENOMEM;
 513                         retcode = i810_dma_initialize(dev, dev_priv, &init);
 514                         break;
 515
 516                 case I810_CLEANUP_DMA:
 517                         DRM_INFO("DMA Cleanup\n");
 518                         retcode = i810_dma_cleanup(dev);
 519                         break;
 520         }
 521
 522         return retcode;
 523 }
 524
 525
 526
 527 /* Most efficient way to verify state for the i810 is as it is
 528  * emitted.  Non-conformant state is silently dropped.
 529  *
 530  * Use 'volatile' & local var tmp to force the emitted values to be
 531  * identical to the verified ones.
 532  */
 533 static void i810EmitContextVerified( drm_device_t *dev,
 534                                      volatile unsigned int *code )
 535 {
 536         drm_i810_private_t *dev_priv = dev->dev_private;
 537         int i, j = 0;
 538         unsigned int tmp;
 539         RING_LOCALS;
 540
 541         BEGIN_LP_RING( I810_CTX_SETUP_SIZE );
 542
 543         OUT_RING( GFX_OP_COLOR_FACTOR );
 544         OUT_RING( code[I810_CTXREG_CF1] );
 545
 546         OUT_RING( GFX_OP_STIPPLE );
 547         OUT_RING( code[I810_CTXREG_ST1] );
 548
 549         for ( i = 4 ; i < I810_CTX_SETUP_SIZE ; i++ ) {
 550                 tmp = code[i];
 551
 552                 if ((tmp & (7<<29)) == (3<<29) &&
 553                     (tmp & (0x1f<<24)) < (0x1d<<24))
 554                 {
 555                         OUT_RING( tmp );
 556                         j++;
 557                 }
 558                 else printk("constext state dropped!!!\n");
 559         }
 560
 561         if (j & 1)
 562                 OUT_RING( 0 );
 563
 564         ADVANCE_LP_RING();
 565 }
 566
 567 static void i810EmitTexVerified( drm_device_t *dev,
 568                                  volatile unsigned int *code )
 569 {
 570         drm_i810_private_t *dev_priv = dev->dev_private;
 571         int i, j = 0;
 572         unsigned int tmp;
 573         RING_LOCALS;
 574
 575         BEGIN_LP_RING( I810_TEX_SETUP_SIZE );
 576
 577         OUT_RING( GFX_OP_MAP_INFO );
 578         OUT_RING( code[I810_TEXREG_MI1] );
 579         OUT_RING( code[I810_TEXREG_MI2] );
 580         OUT_RING( code[I810_TEXREG_MI3] );
 581
 582         for ( i = 4 ; i < I810_TEX_SETUP_SIZE ; i++ ) {
 583                 tmp = code[i];
 584
 585                 if ((tmp & (7<<29)) == (3<<29) &&
 586                     (tmp & (0x1f<<24)) < (0x1d<<24))
 587                 {
 588                         OUT_RING( tmp );
 589                         j++;
 590                 }
 591                 else printk("texture state dropped!!!\n");
 592         }
 593
 594         if (j & 1)
 595                 OUT_RING( 0 );
 596
 597         ADVANCE_LP_RING();
 598 }
 599
 600
 601 /* Need to do some additional checking when setting the dest buffer.
 602  */
 603 static void i810EmitDestVerified( drm_device_t *dev,
 604                                   volatile unsigned int *code )
 605 {
 606         drm_i810_private_t *dev_priv = dev->dev_private;
 607         unsigned int tmp;
 608         RING_LOCALS;
 609
 610         BEGIN_LP_RING( I810_DEST_SETUP_SIZE + 2 );
 611
 612         tmp = code[I810_DESTREG_DI1];
 613         if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
 614                 OUT_RING( CMD_OP_DESTBUFFER_INFO );
 615                 OUT_RING( tmp );
 616         } else
 617            DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
 618                      tmp, dev_priv->front_di1, dev_priv->back_di1);
 619
 620         /* invarient:
 621          */
 622         OUT_RING( CMD_OP_Z_BUFFER_INFO );
 623         OUT_RING( dev_priv->zi1 );
 624
 625         OUT_RING( GFX_OP_DESTBUFFER_VARS );
 626         OUT_RING( code[I810_DESTREG_DV1] );
 627
 628         OUT_RING( GFX_OP_DRAWRECT_INFO );
 629         OUT_RING( code[I810_DESTREG_DR1] );
 630         OUT_RING( code[I810_DESTREG_DR2] );
 631         OUT_RING( code[I810_DESTREG_DR3] );
 632         OUT_RING( code[I810_DESTREG_DR4] );
 633         OUT_RING( 0 );
 634
 635         ADVANCE_LP_RING();
 636 }
 637
 638
 639
 640 static void i810EmitState( drm_device_t *dev )
 641 {
 642         drm_i810_private_t *dev_priv = dev->dev_private;
 643         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 644         unsigned int dirty = sarea_priv->dirty;
 645
 646         DRM_DEBUG("%s %x\n", __FUNCTION__, dirty);
 647
 648         if (dirty & I810_UPLOAD_BUFFERS) {
 649                 i810EmitDestVerified( dev, sarea_priv->BufferState );
 650                 sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
 651         }
 652
 653         if (dirty & I810_UPLOAD_CTX) {
 654                 i810EmitContextVerified( dev, sarea_priv->ContextState );
 655                 sarea_priv->dirty &= ~I810_UPLOAD_CTX;
 656         }
 657
 658         if (dirty & I810_UPLOAD_TEX0) {
 659                 i810EmitTexVerified( dev, sarea_priv->TexState[0] );
 660                 sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
 661         }
 662
 663         if (dirty & I810_UPLOAD_TEX1) {
 664                 i810EmitTexVerified( dev, sarea_priv->TexState[1] );
 665                 sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
 666         }
 667 }
 668
 669
 670
 671 /* need to verify
 672  */
 673 static void i810_dma_dispatch_clear( drm_device_t *dev, int flags,
 674                                      unsigned int clear_color,
 675                                      unsigned int clear_zval )
 676 {
 677         drm_i810_private_t *dev_priv = dev->dev_private;
 678         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 679         int nbox = sarea_priv->nbox;
 680         drm_clip_rect_t *pbox = sarea_priv->boxes;
 681         int pitch = dev_priv->pitch;
 682         int cpp = 2;
 683         int i;
 684         RING_LOCALS;
 685
 686         if ( dev_priv->current_page == 1 ) {
 687                 unsigned int tmp = flags;
 688
 689                 flags &= ~(I810_FRONT | I810_BACK);
 690                 if (tmp & I810_FRONT) flags |= I810_BACK;
 691                 if (tmp & I810_BACK) flags |= I810_FRONT;
 692         }
 693
 694         i810_kernel_lost_context(dev);
 695
 696         if (nbox > I810_NR_SAREA_CLIPRECTS)
 697                 nbox = I810_NR_SAREA_CLIPRECTS;
 698
 699         for (i = 0 ; i < nbox ; i++, pbox++) {
 700                 unsigned int x = pbox->x1;
 701                 unsigned int y = pbox->y1;
 702                 unsigned int width = (pbox->x2 - x) * cpp;
 703                 unsigned int height = pbox->y2 - y;
 704                 unsigned int start = y * pitch + x * cpp;
 705
 706                 if (pbox->x1 > pbox->x2 ||
 707                     pbox->y1 > pbox->y2 ||
 708                     pbox->x2 > dev_priv->w ||
 709                     pbox->y2 > dev_priv->h)
 710                         continue;
 711
 712                 if ( flags & I810_FRONT ) {
 713                         BEGIN_LP_RING( 6 );
 714                         OUT_RING( BR00_BITBLT_CLIENT |
 715                                   BR00_OP_COLOR_BLT | 0x3 );
 716                         OUT_RING( BR13_SOLID_PATTERN | (0xF0 << 16) | pitch );
 717                         OUT_RING( (height << 16) | width );
 718                         OUT_RING( start );
 719                         OUT_RING( clear_color );
 720                         OUT_RING( 0 );
 721                         ADVANCE_LP_RING();
 722                 }
 723
 724                 if ( flags & I810_BACK ) {
 725                         BEGIN_LP_RING( 6 );
 726                         OUT_RING( BR00_BITBLT_CLIENT |
 727                                   BR00_OP_COLOR_BLT | 0x3 );
 728                         OUT_RING( BR13_SOLID_PATTERN | (0xF0 << 16) | pitch );
 729                         OUT_RING( (height << 16) | width );
 730                         OUT_RING( dev_priv->back_offset + start );
 731                         OUT_RING( clear_color );
 732                         OUT_RING( 0 );
 733                         ADVANCE_LP_RING();
 734                 }
 735
 736                 if ( flags & I810_DEPTH ) {
 737                         BEGIN_LP_RING( 6 );
 738                         OUT_RING( BR00_BITBLT_CLIENT |
 739                                   BR00_OP_COLOR_BLT | 0x3 );
 740                         OUT_RING( BR13_SOLID_PATTERN | (0xF0 << 16) | pitch );
 741                         OUT_RING( (height << 16) | width );
 742                         OUT_RING( dev_priv->depth_offset + start );
 743                         OUT_RING( clear_zval );
 744                         OUT_RING( 0 );
 745                         ADVANCE_LP_RING();
 746                 }
 747         }
 748 }
 749
 750 static void i810_dma_dispatch_swap( drm_device_t *dev )
 751 {
 752         drm_i810_private_t *dev_priv = dev->dev_private;
 753         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 754         int nbox = sarea_priv->nbox;
 755         drm_clip_rect_t *pbox = sarea_priv->boxes;
 756         int pitch = dev_priv->pitch;
 757         int cpp = 2;
 758         int i;
 759         RING_LOCALS;
 760
 761         DRM_DEBUG("swapbuffers\n");
 762
 763         i810_kernel_lost_context(dev);
 764
 765         if (nbox > I810_NR_SAREA_CLIPRECTS)
 766                 nbox = I810_NR_SAREA_CLIPRECTS;
 767
 768         for (i = 0 ; i < nbox; i++, pbox++)
 769         {
 770                 unsigned int w = pbox->x2 - pbox->x1;
 771                 unsigned int h = pbox->y2 - pbox->y1;
 772                 unsigned int dst = pbox->x1*cpp + pbox->y1*pitch;
 773                 unsigned int start = dst;
 774
 775                 if (pbox->x1 > pbox->x2 ||
 776                     pbox->y1 > pbox->y2 ||
 777                     pbox->x2 > dev_priv->w ||
 778                     pbox->y2 > dev_priv->h)
 779                         continue;
 780
 781                 BEGIN_LP_RING( 6 );
 782                 OUT_RING( BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4 );
 783                 OUT_RING( pitch | (0xCC << 16));
 784                 OUT_RING( (h << 16) | (w * cpp));
 785                 if (dev_priv->current_page == 0)
 786                   OUT_RING(dev_priv->front_offset + start);
 787                 else
 788                   OUT_RING(dev_priv->back_offset + start);
 789                 OUT_RING( pitch );
 790                 if (dev_priv->current_page == 0)
 791                   OUT_RING(dev_priv->back_offset + start);
 792                 else
 793                   OUT_RING(dev_priv->front_offset + start);
 794                 ADVANCE_LP_RING();
 795         }
 796 }
 797
 798
 799 static void i810_dma_dispatch_vertex(drm_device_t *dev,
 800                                      drm_buf_t *buf,
 801                                      int discard,
 802                                      int used)
 803 {
 804         drm_i810_private_t *dev_priv = dev->dev_private;
 805         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 806         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 807         drm_clip_rect_t *box = sarea_priv->boxes;
 808         int nbox = sarea_priv->nbox;
 809         unsigned long address = (unsigned long)buf->bus_address;
 810         unsigned long start = address - dev->agp->base;
 811         int i = 0;
 812         RING_LOCALS;
 813
 814         i810_kernel_lost_context(dev);
 815
 816         if (nbox > I810_NR_SAREA_CLIPRECTS)
 817                 nbox = I810_NR_SAREA_CLIPRECTS;
 818
 819         if (used > 4*1024)
 820                 used = 0;
 821
 822         if (sarea_priv->dirty)
 823            i810EmitState( dev );
 824
 825         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
 826                 unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
 827
 828                 *(u32 *)buf_priv->kernel_virtual = ((GFX_OP_PRIMITIVE | prim | ((used/4)-2)));
 829
 830                 if (used & 4) {
 831                         *(u32 *)((u32)buf_priv->kernel_virtual + used) = 0;
 832                         used += 4;
 833                 }
 834
 835                 i810_unmap_buffer(buf);
 836         }
 837
 838         if (used) {
 839                 do {
 840                         if (i < nbox) {
 841                                 BEGIN_LP_RING(4);
 842                                 OUT_RING( GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
 843                                           SC_ENABLE );
 844                                 OUT_RING( GFX_OP_SCISSOR_INFO );
 845                                 OUT_RING( box[i].x1 | (box[i].y1<<16) );
 846                                 OUT_RING( (box[i].x2-1) | ((box[i].y2-1)<<16) );
 847                                 ADVANCE_LP_RING();
 848                         }
 849
 850                         BEGIN_LP_RING(4);
 851                         OUT_RING( CMD_OP_BATCH_BUFFER );
 852                         OUT_RING( start | BB1_PROTECTED );
 853                         OUT_RING( start + used - 4 );
 854                         OUT_RING( 0 );
 855                         ADVANCE_LP_RING();
 856
 857                 } while (++i < nbox);
 858         }
 859
 860         if (discard) {
 861                 dev_priv->counter++;
 862
 863                 (void) cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
 864                                I810_BUF_HARDWARE);
 865
 866                 BEGIN_LP_RING(8);
 867                 OUT_RING( CMD_STORE_DWORD_IDX );
 868                 OUT_RING( 20 );
 869                 OUT_RING( dev_priv->counter );
 870                 OUT_RING( CMD_STORE_DWORD_IDX );
 871                 OUT_RING( buf_priv->my_use_idx );
 872                 OUT_RING( I810_BUF_FREE );
 873                 OUT_RING( CMD_REPORT_HEAD );
 874                 OUT_RING( 0 );
 875                 ADVANCE_LP_RING();
 876         }
 877 }
 878
 879 static void i810_dma_dispatch_flip( drm_device_t *dev )
 880 {
 881         drm_i810_private_t *dev_priv = dev->dev_private;
 882         int pitch = dev_priv->pitch;
 883         RING_LOCALS;
 884
 885         DRM_DEBUG( "%s: page=%d pfCurrentPage=%d\n",
 886                 __FUNCTION__,
 887                 dev_priv->current_page,
 888                 dev_priv->sarea_priv->pf_current_page);
 889
 890         i810_kernel_lost_context(dev);
 891
 892         BEGIN_LP_RING( 2 );
 893         OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE );
 894         OUT_RING( 0 );
 895         ADVANCE_LP_RING();
 896
 897         BEGIN_LP_RING( I810_DEST_SETUP_SIZE + 2 );
 898         /* On i815 at least ASYNC is buggy */
 899         /* pitch<<5 is from 11.2.8 p158,
 900            its the pitch / 8 then left shifted 8,
 901            so (pitch >> 3) << 8 */
 902         OUT_RING( CMD_OP_FRONTBUFFER_INFO | (pitch<<5) /*| ASYNC_FLIP */ );
 903         if ( dev_priv->current_page == 0 ) {
 904                 OUT_RING( dev_priv->back_offset );
 905                 dev_priv->current_page = 1;
 906         } else {
 907                 OUT_RING( dev_priv->front_offset );
 908                 dev_priv->current_page = 0;
 909         }
 910         OUT_RING(0);
 911         ADVANCE_LP_RING();
 912
 913         BEGIN_LP_RING(2);
 914         OUT_RING( CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP );
 915         OUT_RING( 0 );
 916         ADVANCE_LP_RING();
 917
 918         /* Increment the frame counter.  The client-side 3D driver must
 919          * throttle the framerate by waiting for this value before
 920          * performing the swapbuffer ioctl.
 921          */
 922         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
 923
 924 }
 925
 926 static void i810_dma_quiescent(drm_device_t *dev)
 927 {
 928         drm_i810_private_t *dev_priv = dev->dev_private;
 929         RING_LOCALS;
 930
 931 /*      printk("%s\n", __FUNCTION__); */
 932
 933         i810_kernel_lost_context(dev);
 934
 935         BEGIN_LP_RING(4);
 936         OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE );
 937         OUT_RING( CMD_REPORT_HEAD );
 938         OUT_RING( 0 );
 939         OUT_RING( 0 );
 940         ADVANCE_LP_RING();
 941
 942         i810_wait_ring( dev, dev_priv->ring.Size - 8 );
 943 }
 944
 945 static int i810_flush_queue(drm_device_t *dev)
 946 {
 947         drm_i810_private_t *dev_priv = dev->dev_private;
 948         drm_device_dma_t *dma = dev->dma;
 949         int i, ret = 0;
 950         RING_LOCALS;
 951
 952 /*      printk("%s\n", __FUNCTION__); */
 953
 954         i810_kernel_lost_context(dev);
 955
 956         BEGIN_LP_RING(2);
 957         OUT_RING( CMD_REPORT_HEAD );
 958         OUT_RING( 0 );
 959         ADVANCE_LP_RING();
 960
 961         i810_wait_ring( dev, dev_priv->ring.Size - 8 );
 962
 963         for (i = 0; i < dma->buf_count; i++) {
 964                 drm_buf_t *buf = dma->buflist[ i ];
 965                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 966
 967                 int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
 968                                    I810_BUF_FREE);
 969
 970                 if (used == I810_BUF_HARDWARE)
 971                         DRM_DEBUG("reclaimed from HARDWARE\n");
 972                 if (used == I810_BUF_CLIENT)
 973                         DRM_DEBUG("still on client\n");
 974         }
 975
 976         return ret;
 977 }
 978
 979 /* Must be called with the lock held */
 980 void i810_reclaim_buffers(drm_device_t *dev, struct file *filp)
 981 {
 982         drm_device_dma_t *dma = dev->dma;
 983         int              i;
 984
 985         if (!dma) return;
 986         if (!dev->dev_private) return;
 987         if (!dma->buflist) return;
 988
 989         i810_flush_queue(dev);
 990
 991         for (i = 0; i < dma->buf_count; i++) {
 992                 drm_buf_t *buf = dma->buflist[ i ];
 993                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 994
 995                 if (buf->filp == filp && buf_priv) {
 996                         int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
 997                                            I810_BUF_FREE);
 998
 999                         if (used == I810_BUF_CLIENT)
1000                                 DRM_DEBUG("reclaimed from client\n");
1001                         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
1002                                 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
1003                 }
1004         }
1005 }
1006
1007 static int i810_flush_ioctl(struct inode *inode, struct file *filp,
1008                             unsigned int cmd, unsigned long arg)
1009 {
1010         drm_file_t        *priv   = filp->private_data;
1011         drm_device_t      *dev    = priv->head->dev;
1012
1013         LOCK_TEST_WITH_RETURN(dev, filp);
1014
1015         i810_flush_queue(dev);
1016         return 0;
1017 }
1018
1019
1020 static int i810_dma_vertex(struct inode *inode, struct file *filp,
1021                unsigned int cmd, unsigned long arg)
1022 {
1023         drm_file_t *priv = filp->private_data;
1024         drm_device_t *dev = priv->head->dev;
1025         drm_device_dma_t *dma = dev->dma;
1026         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1027         u32 *hw_status = dev_priv->hw_status_page;
1028         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1029                                         dev_priv->sarea_priv;
1030         drm_i810_vertex_t vertex;
1031
1032         if (copy_from_user(&vertex, (drm_i810_vertex_t __user *)arg, sizeof(vertex)))
1033                 return -EFAULT;
1034
1035         LOCK_TEST_WITH_RETURN(dev, filp);
1036
1037         DRM_DEBUG("i810 dma vertex, idx %d used %d discard %d\n",
1038                   vertex.idx, vertex.used, vertex.discard);
1039
1040         if (vertex.idx < 0 || vertex.idx > dma->buf_count)
1041                 return -EINVAL;
1042
1043         i810_dma_dispatch_vertex( dev,
1044                                   dma->buflist[ vertex.idx ],
1045                                   vertex.discard, vertex.used );
1046
1047         atomic_add(vertex.used, &dev->counts[_DRM_STAT_SECONDARY]);
1048         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1049         sarea_priv->last_enqueue = dev_priv->counter-1;
1050         sarea_priv->last_dispatch = (int) hw_status[5];
1051
1052         return 0;
1053 }
1054
1055
1056
1057 static int i810_clear_bufs(struct inode *inode, struct file *filp,
1058                    unsigned int cmd, unsigned long arg)
1059 {
1060         drm_file_t *priv = filp->private_data;
1061         drm_device_t *dev = priv->head->dev;
1062         drm_i810_clear_t clear;
1063
1064         if (copy_from_user(&clear, (drm_i810_clear_t __user *)arg, sizeof(clear)))
1065                 return -EFAULT;
1066
1067         LOCK_TEST_WITH_RETURN(dev, filp);
1068
1069         /* GH: Someone's doing nasty things... */
1070         if (!dev->dev_private) {
1071                 return -EINVAL;
1072         }
1073
1074         i810_dma_dispatch_clear( dev, clear.flags,
1075                                  clear.clear_color,
1076                                  clear.clear_depth );
1077         return 0;
1078 }
1079
1080 static int i810_swap_bufs(struct inode *inode, struct file *filp,
1081                   unsigned int cmd, unsigned long arg)
1082 {
1083         drm_file_t *priv = filp->private_data;
1084         drm_device_t *dev = priv->head->dev;
1085
1086         DRM_DEBUG("i810_swap_bufs\n");
1087
1088         LOCK_TEST_WITH_RETURN(dev, filp);
1089
1090         i810_dma_dispatch_swap( dev );
1091         return 0;
1092 }
1093
1094 static int i810_getage(struct inode *inode, struct file *filp, unsigned int cmd,
1095                 unsigned long arg)
1096 {
1097         drm_file_t        *priv     = filp->private_data;
1098         drm_device_t      *dev      = priv->head->dev;
1099         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1100         u32 *hw_status = dev_priv->hw_status_page;
1101         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1102                                         dev_priv->sarea_priv;
1103
1104         sarea_priv->last_dispatch = (int) hw_status[5];
1105         return 0;
1106 }
1107
1108 static int i810_getbuf(struct inode *inode, struct file *filp, unsigned int cmd,
1109                 unsigned long arg)
1110 {
1111         drm_file_t        *priv     = filp->private_data;
1112         drm_device_t      *dev      = priv->head->dev;
1113         int               retcode   = 0;
1114         drm_i810_dma_t    d;
1115         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1116         u32 *hw_status = dev_priv->hw_status_page;
1117         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1118                                         dev_priv->sarea_priv;
1119
1120         if (copy_from_user(&d, (drm_i810_dma_t __user *)arg, sizeof(d)))
1121                 return -EFAULT;
1122
1123         LOCK_TEST_WITH_RETURN(dev, filp);
1124
1125         d.granted = 0;
1126
1127         retcode = i810_dma_get_buffer(dev, &d, filp);
1128
1129         DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
1130                   current->pid, retcode, d.granted);
1131
1132         if (copy_to_user((drm_dma_t __user *)arg, &d, sizeof(d)))
1133                 return -EFAULT;
1134         sarea_priv->last_dispatch = (int) hw_status[5];
1135
1136         return retcode;
1137 }
1138
1139 static int i810_copybuf(struct inode *inode,
1140                          struct file *filp, unsigned int cmd, unsigned long arg)
1141 {
1142         /* Never copy - 2.4.x doesn't need it */
1143         return 0;
1144 }
1145
1146 static int i810_docopy(struct inode *inode, struct file *filp, unsigned int cmd,
1147                         unsigned long arg)
1148 {
1149         /* Never copy - 2.4.x doesn't need it */
1150         return 0;
1151 }
1152
1153 static void i810_dma_dispatch_mc(drm_device_t *dev, drm_buf_t *buf, int used,
1154                 unsigned int last_render)
1155 {
1156         drm_i810_private_t *dev_priv = dev->dev_private;
1157         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
1158         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
1159         unsigned long address = (unsigned long)buf->bus_address;
1160         unsigned long start = address - dev->agp->base;
1161         int u;
1162         RING_LOCALS;
1163
1164         i810_kernel_lost_context(dev);
1165
1166         u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
1167                 I810_BUF_HARDWARE);
1168         if (u != I810_BUF_CLIENT) {
1169                 DRM_DEBUG("MC found buffer that isn't mine!\n");
1170         }
1171
1172         if (used > 4*1024)
1173                 used = 0;
1174
1175         sarea_priv->dirty = 0x7f;
1176
1177         DRM_DEBUG("dispatch mc addr 0x%lx, used 0x%x\n",
1178                 address, used);
1179
1180         dev_priv->counter++;
1181         DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1182         DRM_DEBUG("i810_dma_dispatch_mc\n");
1183         DRM_DEBUG("start : %lx\n", start);
1184         DRM_DEBUG("used : %d\n", used);
1185         DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1186
1187         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
1188                 if (used & 4) {
1189                         *(u32 *)((u32)buf_priv->virtual + used) = 0;
1190                         used += 4;
1191                 }
1192
1193                 i810_unmap_buffer(buf);
1194         }
1195         BEGIN_LP_RING(4);
1196         OUT_RING( CMD_OP_BATCH_BUFFER );
1197         OUT_RING( start | BB1_PROTECTED );
1198         OUT_RING( start + used - 4 );
1199         OUT_RING( 0 );
1200         ADVANCE_LP_RING();
1201
1202
1203         BEGIN_LP_RING(8);
1204         OUT_RING( CMD_STORE_DWORD_IDX );
1205         OUT_RING( buf_priv->my_use_idx );
1206         OUT_RING( I810_BUF_FREE );
1207         OUT_RING( 0 );
1208
1209         OUT_RING( CMD_STORE_DWORD_IDX );
1210         OUT_RING( 16 );
1211         OUT_RING( last_render );
1212         OUT_RING( 0 );
1213         ADVANCE_LP_RING();
1214 }
1215
1216 static int i810_dma_mc(struct inode *inode, struct file *filp,
1217         unsigned int cmd, unsigned long arg)
1218 {
1219         drm_file_t *priv = filp->private_data;
1220         drm_device_t *dev = priv->head->dev;
1221         drm_device_dma_t *dma = dev->dma;
1222         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1223         u32 *hw_status = dev_priv->hw_status_page;
1224         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1225                 dev_priv->sarea_priv;
1226         drm_i810_mc_t mc;
1227
1228         if (copy_from_user(&mc, (drm_i810_mc_t __user *)arg, sizeof(mc)))
1229                 return -EFAULT;
1230
1231         LOCK_TEST_WITH_RETURN(dev, filp);
1232
1233         if (mc.idx >= dma->buf_count || mc.idx < 0)
1234                 return -EINVAL;
1235
1236         i810_dma_dispatch_mc(dev, dma->buflist[mc.idx], mc.used,
1237                 mc.last_render );
1238
1239         atomic_add(mc.used, &dev->counts[_DRM_STAT_SECONDARY]);
1240         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1241         sarea_priv->last_enqueue = dev_priv->counter-1;
1242         sarea_priv->last_dispatch = (int) hw_status[5];
1243
1244         return 0;
1245 }
1246
1247 static int i810_rstatus(struct inode *inode, struct file *filp,
1248                         unsigned int cmd, unsigned long arg)
1249 {
1250         drm_file_t *priv = filp->private_data;
1251         drm_device_t *dev = priv->head->dev;
1252         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1253
1254         return (int)(((u32 *)(dev_priv->hw_status_page))[4]);
1255 }
1256
1257 static int i810_ov0_info(struct inode *inode, struct file *filp,
1258                         unsigned int cmd, unsigned long arg)
1259 {
1260         drm_file_t *priv = filp->private_data;
1261         drm_device_t *dev = priv->head->dev;
1262         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1263         drm_i810_overlay_t data;
1264
1265         data.offset = dev_priv->overlay_offset;
1266         data.physical = dev_priv->overlay_physical;
1267         if (copy_to_user((drm_i810_overlay_t __user *)arg,&data,sizeof(data)))
1268                 return -EFAULT;
1269         return 0;
1270 }
1271
1272 static int i810_fstatus(struct inode *inode, struct file *filp,
1273                         unsigned int cmd, unsigned long arg)
1274 {
1275         drm_file_t *priv = filp->private_data;
1276         drm_device_t *dev = priv->head->dev;
1277         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1278
1279         LOCK_TEST_WITH_RETURN(dev, filp);
1280
1281         return I810_READ(0x30008);
1282 }
1283
1284 static int i810_ov0_flip(struct inode *inode, struct file *filp,
1285                         unsigned int cmd, unsigned long arg)
1286 {
1287         drm_file_t *priv = filp->private_data;
1288         drm_device_t *dev = priv->head->dev;
1289         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1290
1291         LOCK_TEST_WITH_RETURN(dev, filp);
1292
1293         //Tell the overlay to update
1294         I810_WRITE(0x30000,dev_priv->overlay_physical | 0x80000000);
1295
1296         return 0;
1297 }
1298
1299
1300 /* Not sure why this isn't set all the time:
1301  */
1302 static void i810_do_init_pageflip( drm_device_t *dev )
1303 {
1304         drm_i810_private_t *dev_priv = dev->dev_private;
1305
1306         DRM_DEBUG("%s\n", __FUNCTION__);
1307         dev_priv->page_flipping = 1;
1308         dev_priv->current_page = 0;
1309         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1310 }
1311
1312 static int i810_do_cleanup_pageflip( drm_device_t *dev )
1313 {
1314         drm_i810_private_t *dev_priv = dev->dev_private;
1315
1316         DRM_DEBUG("%s\n", __FUNCTION__);
1317         if (dev_priv->current_page != 0)
1318                 i810_dma_dispatch_flip( dev );
1319
1320         dev_priv->page_flipping = 0;
1321         return 0;
1322 }
1323
1324 static int i810_flip_bufs(struct inode *inode, struct file *filp,
1325                         unsigned int cmd, unsigned long arg)
1326 {
1327         drm_file_t *priv = filp->private_data;
1328         drm_device_t *dev = priv->head->dev;
1329         drm_i810_private_t *dev_priv = dev->dev_private;
1330
1331         DRM_DEBUG("%s\n", __FUNCTION__);
1332
1333         LOCK_TEST_WITH_RETURN(dev, filp);
1334
1335         if (!dev_priv->page_flipping)
1336                 i810_do_init_pageflip( dev );
1337
1338         i810_dma_dispatch_flip( dev );
1339         return 0;
1340 }
1341
1342 void i810_driver_pretakedown(drm_device_t *dev)
1343 {
1344         i810_dma_cleanup( dev );
1345 }
1346
1347 void i810_driver_prerelease(drm_device_t *dev, DRMFILE filp)
1348 {
1349         if (dev->dev_private) {
1350                 drm_i810_private_t *dev_priv = dev->dev_private;
1351                 if (dev_priv->page_flipping) {
1352                         i810_do_cleanup_pageflip(dev);
1353                 }
1354         }
1355 }
1356
1357 void i810_driver_release(drm_device_t *dev, struct file *filp)
1358 {
1359         i810_reclaim_buffers(dev, filp);
1360 }
1361
1362 int i810_driver_dma_quiescent(drm_device_t *dev)
1363 {
1364         i810_dma_quiescent( dev );
1365         return 0;
1366 }
1367
1368 drm_ioctl_desc_t i810_ioctls[] = {
1369         [DRM_IOCTL_NR(DRM_I810_INIT)]    = { i810_dma_init,    1, 1 },
1370         [DRM_IOCTL_NR(DRM_I810_VERTEX)]  = { i810_dma_vertex,  1, 0 },
1371         [DRM_IOCTL_NR(DRM_I810_CLEAR)]   = { i810_clear_bufs,  1, 0 },
1372         [DRM_IOCTL_NR(DRM_I810_FLUSH)]   = { i810_flush_ioctl, 1, 0 },
1373         [DRM_IOCTL_NR(DRM_I810_GETAGE)]  = { i810_getage,      1, 0 },
1374         [DRM_IOCTL_NR(DRM_I810_GETBUF)]  = { i810_getbuf,      1, 0 },
1375         [DRM_IOCTL_NR(DRM_I810_SWAP)]    = { i810_swap_bufs,   1, 0 },
1376         [DRM_IOCTL_NR(DRM_I810_COPY)]    = { i810_copybuf,     1, 0 },
1377         [DRM_IOCTL_NR(DRM_I810_DOCOPY)]  = { i810_docopy,      1, 0 },
1378         [DRM_IOCTL_NR(DRM_I810_OV0INFO)] = { i810_ov0_info,    1, 0 },
1379         [DRM_IOCTL_NR(DRM_I810_FSTATUS)] = { i810_fstatus,     1, 0 },
1380         [DRM_IOCTL_NR(DRM_I810_OV0FLIP)] = { i810_ov0_flip,    1, 0 },
1381         [DRM_IOCTL_NR(DRM_I810_MC)]      = { i810_dma_mc,      1, 1 },
1382         [DRM_IOCTL_NR(DRM_I810_RSTATUS)] = { i810_rstatus,     1, 0 },
1383         [DRM_IOCTL_NR(DRM_I810_FLIP)]    = { i810_flip_bufs,   1, 0 }
1384 };
1385
1386 int i810_max_ioctl = DRM_ARRAY_SIZE(i810_ioctls);
1387
1388 /**
1389  * Determine if the device really is AGP or not.
1390  *
1391  * All Intel graphics chipsets are treated as AGP, even if they are really
1392  * PCI-e.
1393  *
1394  * \param dev   The device to be tested.
1395  *
1396  * \returns
1397  * A value of 1 is always retured to indictate every i810 is AGP.
1398  */
1399 int i810_driver_device_is_agp(drm_device_t * dev)
1400 {
1401         return 1;
1402 }