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_map = drm_core_findmap(dev, init->buffers_offset);
 355         if (!dev->agp_buffer_map) {
 356                 dev->dev_private = (void *)dev_priv;
 357                 i810_dma_cleanup(dev);
 358                 DRM_ERROR("can not find dma buffer map!\n");
 359                 return -EINVAL;
 360         }
 361
 362         dev_priv->sarea_priv = (drm_i810_sarea_t *)
 363                 ((u8 *)dev_priv->sarea_map->handle +
 364                  init->sarea_priv_offset);
 365
 366         dev_priv->ring.Start = init->ring_start;
 367         dev_priv->ring.End = init->ring_end;
 368         dev_priv->ring.Size = init->ring_size;
 369
 370         dev_priv->ring.virtual_start = drm_ioremap(dev->agp->base +
 371                                                     init->ring_start,
 372                                                     init->ring_size, dev);
 373
 374         if (dev_priv->ring.virtual_start == NULL) {
 375                 dev->dev_private = (void *) dev_priv;
 376                 i810_dma_cleanup(dev);
 377                 DRM_ERROR("can not ioremap virtual address for"
 378                           " ring buffer\n");
 379                 return -ENOMEM;
 380         }
 381
 382         dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
 383
 384         dev_priv->w = init->w;
 385         dev_priv->h = init->h;
 386         dev_priv->pitch = init->pitch;
 387         dev_priv->back_offset = init->back_offset;
 388         dev_priv->depth_offset = init->depth_offset;
 389         dev_priv->front_offset = init->front_offset;
 390
 391         dev_priv->overlay_offset = init->overlay_offset;
 392         dev_priv->overlay_physical = init->overlay_physical;
 393
 394         dev_priv->front_di1 = init->front_offset | init->pitch_bits;
 395         dev_priv->back_di1 = init->back_offset | init->pitch_bits;
 396         dev_priv->zi1 = init->depth_offset | init->pitch_bits;
 397
 398         /* Program Hardware Status Page */
 399         dev_priv->hw_status_page =
 400                 pci_alloc_consistent(dev->pdev, PAGE_SIZE,
 401                                                 &dev_priv->dma_status_page);
 402         if (!dev_priv->hw_status_page) {
 403                 dev->dev_private = (void *)dev_priv;
 404                 i810_dma_cleanup(dev);
 405                 DRM_ERROR("Can not allocate hardware status page\n");
 406                 return -ENOMEM;
 407         }
 408         memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
 409         DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
 410
 411         I810_WRITE(0x02080, dev_priv->dma_status_page);
 412         DRM_DEBUG("Enabled hardware status page\n");
 413
 414         /* Now we need to init our freelist */
 415         if (i810_freelist_init(dev, dev_priv) != 0) {
 416                 dev->dev_private = (void *)dev_priv;
 417                 i810_dma_cleanup(dev);
 418                 DRM_ERROR("Not enough space in the status page for"
 419                           " the freelist\n");
 420                 return -ENOMEM;
 421         }
 422         dev->dev_private = (void *)dev_priv;
 423
 424         return 0;
 425 }
 426
 427 /* i810 DRM version 1.1 used a smaller init structure with different
 428  * ordering of values than is currently used (drm >= 1.2). There is
 429  * no defined way to detect the XFree version to correct this problem,
 430  * however by checking using this procedure we can detect the correct
 431  * thing to do.
 432  *
 433  * #1 Read the Smaller init structure from user-space
 434  * #2 Verify the overlay_physical is a valid physical address, or NULL
 435  *    If it isn't then we have a v1.1 client. Fix up params.
 436  *    If it is, then we have a 1.2 client... get the rest of the data.
 437  */
 438 static int i810_dma_init_compat(drm_i810_init_t *init, unsigned long arg)
 439 {
 440
 441         /* Get v1.1 init data */
 442         if (copy_from_user(init, (drm_i810_pre12_init_t __user *)arg,
 443                           sizeof(drm_i810_pre12_init_t))) {
 444                 return -EFAULT;
 445         }
 446
 447         if ((!init->overlay_physical) || (init->overlay_physical > 4096)) {
 448
 449                 /* This is a v1.2 client, just get the v1.2 init data */
 450                 DRM_INFO("Using POST v1.2 init.\n");
 451                 if (copy_from_user(init, (drm_i810_init_t __user *)arg,
 452                                    sizeof(drm_i810_init_t))) {
 453                         return -EFAULT;
 454                 }
 455         } else {
 456
 457                 /* This is a v1.1 client, fix the params */
 458                 DRM_INFO("Using PRE v1.2 init.\n");
 459                 init->pitch_bits = init->h;
 460                 init->pitch = init->w;
 461                 init->h = init->overlay_physical;
 462                 init->w = init->overlay_offset;
 463                 init->overlay_physical = 0;
 464                 init->overlay_offset = 0;
 465         }
 466
 467         return 0;
 468 }
 469
 470 static int i810_dma_init(struct inode *inode, struct file *filp,
 471                   unsigned int cmd, unsigned long arg)
 472 {
 473         drm_file_t *priv = filp->private_data;
 474         drm_device_t *dev = priv->head->dev;
 475         drm_i810_private_t *dev_priv;
 476         drm_i810_init_t init;
 477         int retcode = 0;
 478
 479         /* Get only the init func */
 480         if (copy_from_user(&init, (void __user *)arg, sizeof(drm_i810_init_func_t)))
 481                 return -EFAULT;
 482
 483         switch(init.func) {
 484                 case I810_INIT_DMA:
 485                         /* This case is for backward compatibility. It
 486                          * handles XFree 4.1.0 and 4.2.0, and has to
 487                          * do some parameter checking as described below.
 488                          * It will someday go away.
 489                          */
 490                         retcode = i810_dma_init_compat(&init, arg);
 491                         if (retcode)
 492                                 return retcode;
 493
 494                         dev_priv = drm_alloc(sizeof(drm_i810_private_t),
 495                                              DRM_MEM_DRIVER);
 496                         if (dev_priv == NULL)
 497                                 return -ENOMEM;
 498                         retcode = i810_dma_initialize(dev, dev_priv, &init);
 499                         break;
 500
 501                 default:
 502                 case I810_INIT_DMA_1_4:
 503                         DRM_INFO("Using v1.4 init.\n");
 504                         if (copy_from_user(&init, (drm_i810_init_t __user *)arg,
 505                                           sizeof(drm_i810_init_t))) {
 506                                 return -EFAULT;
 507                         }
 508                         dev_priv = drm_alloc(sizeof(drm_i810_private_t),
 509                                              DRM_MEM_DRIVER);
 510                         if (dev_priv == NULL)
 511                                 return -ENOMEM;
 512                         retcode = i810_dma_initialize(dev, dev_priv, &init);
 513                         break;
 514
 515                 case I810_CLEANUP_DMA:
 516                         DRM_INFO("DMA Cleanup\n");
 517                         retcode = i810_dma_cleanup(dev);
 518                         break;
 519         }
 520
 521         return retcode;
 522 }
 523
 524
 525
 526 /* Most efficient way to verify state for the i810 is as it is
 527  * emitted.  Non-conformant state is silently dropped.
 528  *
 529  * Use 'volatile' & local var tmp to force the emitted values to be
 530  * identical to the verified ones.
 531  */
 532 static void i810EmitContextVerified( drm_device_t *dev,
 533                                      volatile unsigned int *code )
 534 {
 535         drm_i810_private_t *dev_priv = dev->dev_private;
 536         int i, j = 0;
 537         unsigned int tmp;
 538         RING_LOCALS;
 539
 540         BEGIN_LP_RING( I810_CTX_SETUP_SIZE );
 541
 542         OUT_RING( GFX_OP_COLOR_FACTOR );
 543         OUT_RING( code[I810_CTXREG_CF1] );
 544
 545         OUT_RING( GFX_OP_STIPPLE );
 546         OUT_RING( code[I810_CTXREG_ST1] );
 547
 548         for ( i = 4 ; i < I810_CTX_SETUP_SIZE ; i++ ) {
 549                 tmp = code[i];
 550
 551                 if ((tmp & (7<<29)) == (3<<29) &&
 552                     (tmp & (0x1f<<24)) < (0x1d<<24))
 553                 {
 554                         OUT_RING( tmp );
 555                         j++;
 556                 }
 557                 else printk("constext state dropped!!!\n");
 558         }
 559
 560         if (j & 1)
 561                 OUT_RING( 0 );
 562
 563         ADVANCE_LP_RING();
 564 }
 565
 566 static void i810EmitTexVerified( drm_device_t *dev,
 567                                  volatile unsigned int *code )
 568 {
 569         drm_i810_private_t *dev_priv = dev->dev_private;
 570         int i, j = 0;
 571         unsigned int tmp;
 572         RING_LOCALS;
 573
 574         BEGIN_LP_RING( I810_TEX_SETUP_SIZE );
 575
 576         OUT_RING( GFX_OP_MAP_INFO );
 577         OUT_RING( code[I810_TEXREG_MI1] );
 578         OUT_RING( code[I810_TEXREG_MI2] );
 579         OUT_RING( code[I810_TEXREG_MI3] );
 580
 581         for ( i = 4 ; i < I810_TEX_SETUP_SIZE ; i++ ) {
 582                 tmp = code[i];
 583
 584                 if ((tmp & (7<<29)) == (3<<29) &&
 585                     (tmp & (0x1f<<24)) < (0x1d<<24))
 586                 {
 587                         OUT_RING( tmp );
 588                         j++;
 589                 }
 590                 else printk("texture state dropped!!!\n");
 591         }
 592
 593         if (j & 1)
 594                 OUT_RING( 0 );
 595
 596         ADVANCE_LP_RING();
 597 }
 598
 599
 600 /* Need to do some additional checking when setting the dest buffer.
 601  */
 602 static void i810EmitDestVerified( drm_device_t *dev,
 603                                   volatile unsigned int *code )
 604 {
 605         drm_i810_private_t *dev_priv = dev->dev_private;
 606         unsigned int tmp;
 607         RING_LOCALS;
 608
 609         BEGIN_LP_RING( I810_DEST_SETUP_SIZE + 2 );
 610
 611         tmp = code[I810_DESTREG_DI1];
 612         if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
 613                 OUT_RING( CMD_OP_DESTBUFFER_INFO );
 614                 OUT_RING( tmp );
 615         } else
 616            DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
 617                      tmp, dev_priv->front_di1, dev_priv->back_di1);
 618
 619         /* invarient:
 620          */
 621         OUT_RING( CMD_OP_Z_BUFFER_INFO );
 622         OUT_RING( dev_priv->zi1 );
 623
 624         OUT_RING( GFX_OP_DESTBUFFER_VARS );
 625         OUT_RING( code[I810_DESTREG_DV1] );
 626
 627         OUT_RING( GFX_OP_DRAWRECT_INFO );
 628         OUT_RING( code[I810_DESTREG_DR1] );
 629         OUT_RING( code[I810_DESTREG_DR2] );
 630         OUT_RING( code[I810_DESTREG_DR3] );
 631         OUT_RING( code[I810_DESTREG_DR4] );
 632         OUT_RING( 0 );
 633
 634         ADVANCE_LP_RING();
 635 }
 636
 637
 638
 639 static void i810EmitState( drm_device_t *dev )
 640 {
 641         drm_i810_private_t *dev_priv = dev->dev_private;
 642         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 643         unsigned int dirty = sarea_priv->dirty;
 644
 645         DRM_DEBUG("%s %x\n", __FUNCTION__, dirty);
 646
 647         if (dirty & I810_UPLOAD_BUFFERS) {
 648                 i810EmitDestVerified( dev, sarea_priv->BufferState );
 649                 sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
 650         }
 651
 652         if (dirty & I810_UPLOAD_CTX) {
 653                 i810EmitContextVerified( dev, sarea_priv->ContextState );
 654                 sarea_priv->dirty &= ~I810_UPLOAD_CTX;
 655         }
 656
 657         if (dirty & I810_UPLOAD_TEX0) {
 658                 i810EmitTexVerified( dev, sarea_priv->TexState[0] );
 659                 sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
 660         }
 661
 662         if (dirty & I810_UPLOAD_TEX1) {
 663                 i810EmitTexVerified( dev, sarea_priv->TexState[1] );
 664                 sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
 665         }
 666 }
 667
 668
 669
 670 /* need to verify
 671  */
 672 static void i810_dma_dispatch_clear( drm_device_t *dev, int flags,
 673                                      unsigned int clear_color,
 674                                      unsigned int clear_zval )
 675 {
 676         drm_i810_private_t *dev_priv = dev->dev_private;
 677         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 678         int nbox = sarea_priv->nbox;
 679         drm_clip_rect_t *pbox = sarea_priv->boxes;
 680         int pitch = dev_priv->pitch;
 681         int cpp = 2;
 682         int i;
 683         RING_LOCALS;
 684
 685         if ( dev_priv->current_page == 1 ) {
 686                 unsigned int tmp = flags;
 687
 688                 flags &= ~(I810_FRONT | I810_BACK);
 689                 if (tmp & I810_FRONT) flags |= I810_BACK;
 690                 if (tmp & I810_BACK) flags |= I810_FRONT;
 691         }
 692
 693         i810_kernel_lost_context(dev);
 694
 695         if (nbox > I810_NR_SAREA_CLIPRECTS)
 696                 nbox = I810_NR_SAREA_CLIPRECTS;
 697
 698         for (i = 0 ; i < nbox ; i++, pbox++) {
 699                 unsigned int x = pbox->x1;
 700                 unsigned int y = pbox->y1;
 701                 unsigned int width = (pbox->x2 - x) * cpp;
 702                 unsigned int height = pbox->y2 - y;
 703                 unsigned int start = y * pitch + x * cpp;
 704
 705                 if (pbox->x1 > pbox->x2 ||
 706                     pbox->y1 > pbox->y2 ||
 707                     pbox->x2 > dev_priv->w ||
 708                     pbox->y2 > dev_priv->h)
 709                         continue;
 710
 711                 if ( flags & I810_FRONT ) {
 712                         BEGIN_LP_RING( 6 );
 713                         OUT_RING( BR00_BITBLT_CLIENT |
 714                                   BR00_OP_COLOR_BLT | 0x3 );
 715                         OUT_RING( BR13_SOLID_PATTERN | (0xF0 << 16) | pitch );
 716                         OUT_RING( (height << 16) | width );
 717                         OUT_RING( start );
 718                         OUT_RING( clear_color );
 719                         OUT_RING( 0 );
 720                         ADVANCE_LP_RING();
 721                 }
 722
 723                 if ( flags & I810_BACK ) {
 724                         BEGIN_LP_RING( 6 );
 725                         OUT_RING( BR00_BITBLT_CLIENT |
 726                                   BR00_OP_COLOR_BLT | 0x3 );
 727                         OUT_RING( BR13_SOLID_PATTERN | (0xF0 << 16) | pitch );
 728                         OUT_RING( (height << 16) | width );
 729                         OUT_RING( dev_priv->back_offset + start );
 730                         OUT_RING( clear_color );
 731                         OUT_RING( 0 );
 732                         ADVANCE_LP_RING();
 733                 }
 734
 735                 if ( flags & I810_DEPTH ) {
 736                         BEGIN_LP_RING( 6 );
 737                         OUT_RING( BR00_BITBLT_CLIENT |
 738                                   BR00_OP_COLOR_BLT | 0x3 );
 739                         OUT_RING( BR13_SOLID_PATTERN | (0xF0 << 16) | pitch );
 740                         OUT_RING( (height << 16) | width );
 741                         OUT_RING( dev_priv->depth_offset + start );
 742                         OUT_RING( clear_zval );
 743                         OUT_RING( 0 );
 744                         ADVANCE_LP_RING();
 745                 }
 746         }
 747 }
 748
 749 static void i810_dma_dispatch_swap( drm_device_t *dev )
 750 {
 751         drm_i810_private_t *dev_priv = dev->dev_private;
 752         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 753         int nbox = sarea_priv->nbox;
 754         drm_clip_rect_t *pbox = sarea_priv->boxes;
 755         int pitch = dev_priv->pitch;
 756         int cpp = 2;
 757         int i;
 758         RING_LOCALS;
 759
 760         DRM_DEBUG("swapbuffers\n");
 761
 762         i810_kernel_lost_context(dev);
 763
 764         if (nbox > I810_NR_SAREA_CLIPRECTS)
 765                 nbox = I810_NR_SAREA_CLIPRECTS;
 766
 767         for (i = 0 ; i < nbox; i++, pbox++)
 768         {
 769                 unsigned int w = pbox->x2 - pbox->x1;
 770                 unsigned int h = pbox->y2 - pbox->y1;
 771                 unsigned int dst = pbox->x1*cpp + pbox->y1*pitch;
 772                 unsigned int start = dst;
 773
 774                 if (pbox->x1 > pbox->x2 ||
 775                     pbox->y1 > pbox->y2 ||
 776                     pbox->x2 > dev_priv->w ||
 777                     pbox->y2 > dev_priv->h)
 778                         continue;
 779
 780                 BEGIN_LP_RING( 6 );
 781                 OUT_RING( BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4 );
 782                 OUT_RING( pitch | (0xCC << 16));
 783                 OUT_RING( (h << 16) | (w * cpp));
 784                 if (dev_priv->current_page == 0)
 785                   OUT_RING(dev_priv->front_offset + start);
 786                 else
 787                   OUT_RING(dev_priv->back_offset + start);
 788                 OUT_RING( pitch );
 789                 if (dev_priv->current_page == 0)
 790                   OUT_RING(dev_priv->back_offset + start);
 791                 else
 792                   OUT_RING(dev_priv->front_offset + start);
 793                 ADVANCE_LP_RING();
 794         }
 795 }
 796
 797
 798 static void i810_dma_dispatch_vertex(drm_device_t *dev,
 799                                      drm_buf_t *buf,
 800                                      int discard,
 801                                      int used)
 802 {
 803         drm_i810_private_t *dev_priv = dev->dev_private;
 804         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 805         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
 806         drm_clip_rect_t *box = sarea_priv->boxes;
 807         int nbox = sarea_priv->nbox;
 808         unsigned long address = (unsigned long)buf->bus_address;
 809         unsigned long start = address - dev->agp->base;
 810         int i = 0;
 811         RING_LOCALS;
 812
 813         i810_kernel_lost_context(dev);
 814
 815         if (nbox > I810_NR_SAREA_CLIPRECTS)
 816                 nbox = I810_NR_SAREA_CLIPRECTS;
 817
 818         if (used > 4*1024)
 819                 used = 0;
 820
 821         if (sarea_priv->dirty)
 822            i810EmitState( dev );
 823
 824         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
 825                 unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
 826
 827                 *(u32 *)buf_priv->kernel_virtual = ((GFX_OP_PRIMITIVE | prim | ((used/4)-2)));
 828
 829                 if (used & 4) {
 830                         *(u32 *)((u32)buf_priv->kernel_virtual + used) = 0;
 831                         used += 4;
 832                 }
 833
 834                 i810_unmap_buffer(buf);
 835         }
 836
 837         if (used) {
 838                 do {
 839                         if (i < nbox) {
 840                                 BEGIN_LP_RING(4);
 841                                 OUT_RING( GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
 842                                           SC_ENABLE );
 843                                 OUT_RING( GFX_OP_SCISSOR_INFO );
 844                                 OUT_RING( box[i].x1 | (box[i].y1<<16) );
 845                                 OUT_RING( (box[i].x2-1) | ((box[i].y2-1)<<16) );
 846                                 ADVANCE_LP_RING();
 847                         }
 848
 849                         BEGIN_LP_RING(4);
 850                         OUT_RING( CMD_OP_BATCH_BUFFER );
 851                         OUT_RING( start | BB1_PROTECTED );
 852                         OUT_RING( start + used - 4 );
 853                         OUT_RING( 0 );
 854                         ADVANCE_LP_RING();
 855
 856                 } while (++i < nbox);
 857         }
 858
 859         if (discard) {
 860                 dev_priv->counter++;
 861
 862                 (void) cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
 863                                I810_BUF_HARDWARE);
 864
 865                 BEGIN_LP_RING(8);
 866                 OUT_RING( CMD_STORE_DWORD_IDX );
 867                 OUT_RING( 20 );
 868                 OUT_RING( dev_priv->counter );
 869                 OUT_RING( CMD_STORE_DWORD_IDX );
 870                 OUT_RING( buf_priv->my_use_idx );
 871                 OUT_RING( I810_BUF_FREE );
 872                 OUT_RING( CMD_REPORT_HEAD );
 873                 OUT_RING( 0 );
 874                 ADVANCE_LP_RING();
 875         }
 876 }
 877
 878 static void i810_dma_dispatch_flip( drm_device_t *dev )
 879 {
 880         drm_i810_private_t *dev_priv = dev->dev_private;
 881         int pitch = dev_priv->pitch;
 882         RING_LOCALS;
 883
 884         DRM_DEBUG( "%s: page=%d pfCurrentPage=%d\n",
 885                 __FUNCTION__,
 886                 dev_priv->current_page,
 887                 dev_priv->sarea_priv->pf_current_page);
 888
 889         i810_kernel_lost_context(dev);
 890
 891         BEGIN_LP_RING( 2 );
 892         OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE );
 893         OUT_RING( 0 );
 894         ADVANCE_LP_RING();
 895
 896         BEGIN_LP_RING( I810_DEST_SETUP_SIZE + 2 );
 897         /* On i815 at least ASYNC is buggy */
 898         /* pitch<<5 is from 11.2.8 p158,
 899            its the pitch / 8 then left shifted 8,
 900            so (pitch >> 3) << 8 */
 901         OUT_RING( CMD_OP_FRONTBUFFER_INFO | (pitch<<5) /*| ASYNC_FLIP */ );
 902         if ( dev_priv->current_page == 0 ) {
 903                 OUT_RING( dev_priv->back_offset );
 904                 dev_priv->current_page = 1;
 905         } else {
 906                 OUT_RING( dev_priv->front_offset );
 907                 dev_priv->current_page = 0;
 908         }
 909         OUT_RING(0);
 910         ADVANCE_LP_RING();
 911
 912         BEGIN_LP_RING(2);
 913         OUT_RING( CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP );
 914         OUT_RING( 0 );
 915         ADVANCE_LP_RING();
 916
 917         /* Increment the frame counter.  The client-side 3D driver must
 918          * throttle the framerate by waiting for this value before
 919          * performing the swapbuffer ioctl.
 920          */
 921         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
 922
 923 }
 924
 925 static void i810_dma_quiescent(drm_device_t *dev)
 926 {
 927         drm_i810_private_t *dev_priv = dev->dev_private;
 928         RING_LOCALS;
 929
 930 /*      printk("%s\n", __FUNCTION__); */
 931
 932         i810_kernel_lost_context(dev);
 933
 934         BEGIN_LP_RING(4);
 935         OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE );
 936         OUT_RING( CMD_REPORT_HEAD );
 937         OUT_RING( 0 );
 938         OUT_RING( 0 );
 939         ADVANCE_LP_RING();
 940
 941         i810_wait_ring( dev, dev_priv->ring.Size - 8 );
 942 }
 943
 944 static int i810_flush_queue(drm_device_t *dev)
 945 {
 946         drm_i810_private_t *dev_priv = dev->dev_private;
 947         drm_device_dma_t *dma = dev->dma;
 948         int i, ret = 0;
 949         RING_LOCALS;
 950
 951 /*      printk("%s\n", __FUNCTION__); */
 952
 953         i810_kernel_lost_context(dev);
 954
 955         BEGIN_LP_RING(2);
 956         OUT_RING( CMD_REPORT_HEAD );
 957         OUT_RING( 0 );
 958         ADVANCE_LP_RING();
 959
 960         i810_wait_ring( dev, dev_priv->ring.Size - 8 );
 961
 962         for (i = 0; i < dma->buf_count; i++) {
 963                 drm_buf_t *buf = dma->buflist[ i ];
 964                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 965
 966                 int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
 967                                    I810_BUF_FREE);
 968
 969                 if (used == I810_BUF_HARDWARE)
 970                         DRM_DEBUG("reclaimed from HARDWARE\n");
 971                 if (used == I810_BUF_CLIENT)
 972                         DRM_DEBUG("still on client\n");
 973         }
 974
 975         return ret;
 976 }
 977
 978 /* Must be called with the lock held */
 979 void i810_reclaim_buffers(drm_device_t *dev, struct file *filp)
 980 {
 981         drm_device_dma_t *dma = dev->dma;
 982         int              i;
 983
 984         if (!dma) return;
 985         if (!dev->dev_private) return;
 986         if (!dma->buflist) return;
 987
 988         i810_flush_queue(dev);
 989
 990         for (i = 0; i < dma->buf_count; i++) {
 991                 drm_buf_t *buf = dma->buflist[ i ];
 992                 drm_i810_buf_priv_t *buf_priv = buf->dev_private;
 993
 994                 if (buf->filp == filp && buf_priv) {
 995                         int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
 996                                            I810_BUF_FREE);
 997
 998                         if (used == I810_BUF_CLIENT)
 999                                 DRM_DEBUG("reclaimed from client\n");
1000                         if (buf_priv->currently_mapped == I810_BUF_MAPPED)
1001                                 buf_priv->currently_mapped = I810_BUF_UNMAPPED;
1002                 }
1003         }
1004 }
1005
1006 static int i810_flush_ioctl(struct inode *inode, struct file *filp,
1007                             unsigned int cmd, unsigned long arg)
1008 {
1009         drm_file_t        *priv   = filp->private_data;
1010         drm_device_t      *dev    = priv->head->dev;
1011
1012         LOCK_TEST_WITH_RETURN(dev, filp);
1013
1014         i810_flush_queue(dev);
1015         return 0;
1016 }
1017
1018
1019 static int i810_dma_vertex(struct inode *inode, struct file *filp,
1020                unsigned int cmd, unsigned long arg)
1021 {
1022         drm_file_t *priv = filp->private_data;
1023         drm_device_t *dev = priv->head->dev;
1024         drm_device_dma_t *dma = dev->dma;
1025         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1026         u32 *hw_status = dev_priv->hw_status_page;
1027         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1028                                         dev_priv->sarea_priv;
1029         drm_i810_vertex_t vertex;
1030
1031         if (copy_from_user(&vertex, (drm_i810_vertex_t __user *)arg, sizeof(vertex)))
1032                 return -EFAULT;
1033
1034         LOCK_TEST_WITH_RETURN(dev, filp);
1035
1036         DRM_DEBUG("i810 dma vertex, idx %d used %d discard %d\n",
1037                   vertex.idx, vertex.used, vertex.discard);
1038
1039         if (vertex.idx < 0 || vertex.idx > dma->buf_count)
1040                 return -EINVAL;
1041
1042         i810_dma_dispatch_vertex( dev,
1043                                   dma->buflist[ vertex.idx ],
1044                                   vertex.discard, vertex.used );
1045
1046         atomic_add(vertex.used, &dev->counts[_DRM_STAT_SECONDARY]);
1047         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1048         sarea_priv->last_enqueue = dev_priv->counter-1;
1049         sarea_priv->last_dispatch = (int) hw_status[5];
1050
1051         return 0;
1052 }
1053
1054
1055
1056 static int i810_clear_bufs(struct inode *inode, struct file *filp,
1057                    unsigned int cmd, unsigned long arg)
1058 {
1059         drm_file_t *priv = filp->private_data;
1060         drm_device_t *dev = priv->head->dev;
1061         drm_i810_clear_t clear;
1062
1063         if (copy_from_user(&clear, (drm_i810_clear_t __user *)arg, sizeof(clear)))
1064                 return -EFAULT;
1065
1066         LOCK_TEST_WITH_RETURN(dev, filp);
1067
1068         /* GH: Someone's doing nasty things... */
1069         if (!dev->dev_private) {
1070                 return -EINVAL;
1071         }
1072
1073         i810_dma_dispatch_clear( dev, clear.flags,
1074                                  clear.clear_color,
1075                                  clear.clear_depth );
1076         return 0;
1077 }
1078
1079 static int i810_swap_bufs(struct inode *inode, struct file *filp,
1080                   unsigned int cmd, unsigned long arg)
1081 {
1082         drm_file_t *priv = filp->private_data;
1083         drm_device_t *dev = priv->head->dev;
1084
1085         DRM_DEBUG("i810_swap_bufs\n");
1086
1087         LOCK_TEST_WITH_RETURN(dev, filp);
1088
1089         i810_dma_dispatch_swap( dev );
1090         return 0;
1091 }
1092
1093 static int i810_getage(struct inode *inode, struct file *filp, unsigned int cmd,
1094                 unsigned long arg)
1095 {
1096         drm_file_t        *priv     = filp->private_data;
1097         drm_device_t      *dev      = priv->head->dev;
1098         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1099         u32 *hw_status = dev_priv->hw_status_page;
1100         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1101                                         dev_priv->sarea_priv;
1102
1103         sarea_priv->last_dispatch = (int) hw_status[5];
1104         return 0;
1105 }
1106
1107 static int i810_getbuf(struct inode *inode, struct file *filp, unsigned int cmd,
1108                 unsigned long arg)
1109 {
1110         drm_file_t        *priv     = filp->private_data;
1111         drm_device_t      *dev      = priv->head->dev;
1112         int               retcode   = 0;
1113         drm_i810_dma_t    d;
1114         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1115         u32 *hw_status = dev_priv->hw_status_page;
1116         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1117                                         dev_priv->sarea_priv;
1118
1119         if (copy_from_user(&d, (drm_i810_dma_t __user *)arg, sizeof(d)))
1120                 return -EFAULT;
1121
1122         LOCK_TEST_WITH_RETURN(dev, filp);
1123
1124         d.granted = 0;
1125
1126         retcode = i810_dma_get_buffer(dev, &d, filp);
1127
1128         DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
1129                   current->pid, retcode, d.granted);
1130
1131         if (copy_to_user((drm_dma_t __user *)arg, &d, sizeof(d)))
1132                 return -EFAULT;
1133         sarea_priv->last_dispatch = (int) hw_status[5];
1134
1135         return retcode;
1136 }
1137
1138 static int i810_copybuf(struct inode *inode,
1139                          struct file *filp, unsigned int cmd, unsigned long arg)
1140 {
1141         /* Never copy - 2.4.x doesn't need it */
1142         return 0;
1143 }
1144
1145 static int i810_docopy(struct inode *inode, struct file *filp, unsigned int cmd,
1146                         unsigned long arg)
1147 {
1148         /* Never copy - 2.4.x doesn't need it */
1149         return 0;
1150 }
1151
1152 static void i810_dma_dispatch_mc(drm_device_t *dev, drm_buf_t *buf, int used,
1153                 unsigned int last_render)
1154 {
1155         drm_i810_private_t *dev_priv = dev->dev_private;
1156         drm_i810_buf_priv_t *buf_priv = buf->dev_private;
1157         drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
1158         unsigned long address = (unsigned long)buf->bus_address;
1159         unsigned long start = address - dev->agp->base;
1160         int u;
1161         RING_LOCALS;
1162
1163         i810_kernel_lost_context(dev);
1164
1165         u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
1166                 I810_BUF_HARDWARE);
1167         if (u != I810_BUF_CLIENT) {
1168                 DRM_DEBUG("MC found buffer that isn't mine!\n");
1169         }
1170
1171         if (used > 4*1024)
1172                 used = 0;
1173
1174         sarea_priv->dirty = 0x7f;
1175
1176         DRM_DEBUG("dispatch mc addr 0x%lx, used 0x%x\n",
1177                 address, used);
1178
1179         dev_priv->counter++;
1180         DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
1181         DRM_DEBUG("i810_dma_dispatch_mc\n");
1182         DRM_DEBUG("start : %lx\n", start);
1183         DRM_DEBUG("used : %d\n", used);
1184         DRM_DEBUG("start + used - 4 : %ld\n", start + used - 4);
1185
1186         if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
1187                 if (used & 4) {
1188                         *(u32 *)((u32)buf_priv->virtual + used) = 0;
1189                         used += 4;
1190                 }
1191
1192                 i810_unmap_buffer(buf);
1193         }
1194         BEGIN_LP_RING(4);
1195         OUT_RING( CMD_OP_BATCH_BUFFER );
1196         OUT_RING( start | BB1_PROTECTED );
1197         OUT_RING( start + used - 4 );
1198         OUT_RING( 0 );
1199         ADVANCE_LP_RING();
1200
1201
1202         BEGIN_LP_RING(8);
1203         OUT_RING( CMD_STORE_DWORD_IDX );
1204         OUT_RING( buf_priv->my_use_idx );
1205         OUT_RING( I810_BUF_FREE );
1206         OUT_RING( 0 );
1207
1208         OUT_RING( CMD_STORE_DWORD_IDX );
1209         OUT_RING( 16 );
1210         OUT_RING( last_render );
1211         OUT_RING( 0 );
1212         ADVANCE_LP_RING();
1213 }
1214
1215 static int i810_dma_mc(struct inode *inode, struct file *filp,
1216         unsigned int cmd, unsigned long arg)
1217 {
1218         drm_file_t *priv = filp->private_data;
1219         drm_device_t *dev = priv->head->dev;
1220         drm_device_dma_t *dma = dev->dma;
1221         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1222         u32 *hw_status = dev_priv->hw_status_page;
1223         drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
1224                 dev_priv->sarea_priv;
1225         drm_i810_mc_t mc;
1226
1227         if (copy_from_user(&mc, (drm_i810_mc_t __user *)arg, sizeof(mc)))
1228                 return -EFAULT;
1229
1230         LOCK_TEST_WITH_RETURN(dev, filp);
1231
1232         if (mc.idx >= dma->buf_count || mc.idx < 0)
1233                 return -EINVAL;
1234
1235         i810_dma_dispatch_mc(dev, dma->buflist[mc.idx], mc.used,
1236                 mc.last_render );
1237
1238         atomic_add(mc.used, &dev->counts[_DRM_STAT_SECONDARY]);
1239         atomic_inc(&dev->counts[_DRM_STAT_DMA]);
1240         sarea_priv->last_enqueue = dev_priv->counter-1;
1241         sarea_priv->last_dispatch = (int) hw_status[5];
1242
1243         return 0;
1244 }
1245
1246 static int i810_rstatus(struct inode *inode, struct file *filp,
1247                         unsigned int cmd, unsigned long arg)
1248 {
1249         drm_file_t *priv = filp->private_data;
1250         drm_device_t *dev = priv->head->dev;
1251         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1252
1253         return (int)(((u32 *)(dev_priv->hw_status_page))[4]);
1254 }
1255
1256 static int i810_ov0_info(struct inode *inode, struct file *filp,
1257                         unsigned int cmd, unsigned long arg)
1258 {
1259         drm_file_t *priv = filp->private_data;
1260         drm_device_t *dev = priv->head->dev;
1261         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1262         drm_i810_overlay_t data;
1263
1264         data.offset = dev_priv->overlay_offset;
1265         data.physical = dev_priv->overlay_physical;
1266         if (copy_to_user((drm_i810_overlay_t __user *)arg,&data,sizeof(data)))
1267                 return -EFAULT;
1268         return 0;
1269 }
1270
1271 static int i810_fstatus(struct inode *inode, struct file *filp,
1272                         unsigned int cmd, unsigned long arg)
1273 {
1274         drm_file_t *priv = filp->private_data;
1275         drm_device_t *dev = priv->head->dev;
1276         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1277
1278         LOCK_TEST_WITH_RETURN(dev, filp);
1279
1280         return I810_READ(0x30008);
1281 }
1282
1283 static int i810_ov0_flip(struct inode *inode, struct file *filp,
1284                         unsigned int cmd, unsigned long arg)
1285 {
1286         drm_file_t *priv = filp->private_data;
1287         drm_device_t *dev = priv->head->dev;
1288         drm_i810_private_t *dev_priv = (drm_i810_private_t *)dev->dev_private;
1289
1290         LOCK_TEST_WITH_RETURN(dev, filp);
1291
1292         //Tell the overlay to update
1293         I810_WRITE(0x30000,dev_priv->overlay_physical | 0x80000000);
1294
1295         return 0;
1296 }
1297
1298
1299 /* Not sure why this isn't set all the time:
1300  */
1301 static void i810_do_init_pageflip( drm_device_t *dev )
1302 {
1303         drm_i810_private_t *dev_priv = dev->dev_private;
1304
1305         DRM_DEBUG("%s\n", __FUNCTION__);
1306         dev_priv->page_flipping = 1;
1307         dev_priv->current_page = 0;
1308         dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
1309 }
1310
1311 static int i810_do_cleanup_pageflip( drm_device_t *dev )
1312 {
1313         drm_i810_private_t *dev_priv = dev->dev_private;
1314
1315         DRM_DEBUG("%s\n", __FUNCTION__);
1316         if (dev_priv->current_page != 0)
1317                 i810_dma_dispatch_flip( dev );
1318
1319         dev_priv->page_flipping = 0;
1320         return 0;
1321 }
1322
1323 static int i810_flip_bufs(struct inode *inode, struct file *filp,
1324                         unsigned int cmd, unsigned long arg)
1325 {
1326         drm_file_t *priv = filp->private_data;
1327         drm_device_t *dev = priv->head->dev;
1328         drm_i810_private_t *dev_priv = dev->dev_private;
1329
1330         DRM_DEBUG("%s\n", __FUNCTION__);
1331
1332         LOCK_TEST_WITH_RETURN(dev, filp);
1333
1334         if (!dev_priv->page_flipping)
1335                 i810_do_init_pageflip( dev );
1336
1337         i810_dma_dispatch_flip( dev );
1338         return 0;
1339 }
1340
1341 void i810_driver_pretakedown(drm_device_t *dev)
1342 {
1343         i810_dma_cleanup( dev );
1344 }
1345
1346 void i810_driver_prerelease(drm_device_t *dev, DRMFILE filp)
1347 {
1348         if (dev->dev_private) {
1349                 drm_i810_private_t *dev_priv = dev->dev_private;
1350                 if (dev_priv->page_flipping) {
1351                         i810_do_cleanup_pageflip(dev);
1352                 }
1353         }
1354 }
1355
1356 void i810_driver_release(drm_device_t *dev, struct file *filp)
1357 {
1358         i810_reclaim_buffers(dev, filp);
1359 }
1360
1361 int i810_driver_dma_quiescent(drm_device_t *dev)
1362 {
1363         i810_dma_quiescent( dev );
1364         return 0;
1365 }
1366
1367 drm_ioctl_desc_t i810_ioctls[] = {
1368         [DRM_IOCTL_NR(DRM_I810_INIT)]    = { i810_dma_init,    1, 1 },
1369         [DRM_IOCTL_NR(DRM_I810_VERTEX)]  = { i810_dma_vertex,  1, 0 },
1370         [DRM_IOCTL_NR(DRM_I810_CLEAR)]   = { i810_clear_bufs,  1, 0 },
1371         [DRM_IOCTL_NR(DRM_I810_FLUSH)]   = { i810_flush_ioctl, 1, 0 },
1372         [DRM_IOCTL_NR(DRM_I810_GETAGE)]  = { i810_getage,      1, 0 },
1373         [DRM_IOCTL_NR(DRM_I810_GETBUF)]  = { i810_getbuf,      1, 0 },
1374         [DRM_IOCTL_NR(DRM_I810_SWAP)]    = { i810_swap_bufs,   1, 0 },
1375         [DRM_IOCTL_NR(DRM_I810_COPY)]    = { i810_copybuf,     1, 0 },
1376         [DRM_IOCTL_NR(DRM_I810_DOCOPY)]  = { i810_docopy,      1, 0 },
1377         [DRM_IOCTL_NR(DRM_I810_OV0INFO)] = { i810_ov0_info,    1, 0 },
1378         [DRM_IOCTL_NR(DRM_I810_FSTATUS)] = { i810_fstatus,     1, 0 },
1379         [DRM_IOCTL_NR(DRM_I810_OV0FLIP)] = { i810_ov0_flip,    1, 0 },
1380         [DRM_IOCTL_NR(DRM_I810_MC)]      = { i810_dma_mc,      1, 1 },
1381         [DRM_IOCTL_NR(DRM_I810_RSTATUS)] = { i810_rstatus,     1, 0 },
1382         [DRM_IOCTL_NR(DRM_I810_FLIP)]    = { i810_flip_bufs,   1, 0 }
1383 };
1384
1385 int i810_max_ioctl = DRM_ARRAY_SIZE(i810_ioctls);