git.oblomov.eu Git - linux-2.6/blob - drivers/char/drm/savage_bci.c

   1 /* savage_bci.c -- BCI support for Savage
   2  *
   3  * Copyright 2004  Felix Kuehling
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sub license,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  20  * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
  22  * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25 #include "drmP.h"
  26 #include "savage_drm.h"
  27 #include "savage_drv.h"
  28
  29 /* Need a long timeout for shadow status updates can take a while
  30  * and so can waiting for events when the queue is full. */
  31 #define SAVAGE_DEFAULT_USEC_TIMEOUT     1000000 /* 1s */
  32 #define SAVAGE_EVENT_USEC_TIMEOUT       5000000 /* 5s */
  33 #define SAVAGE_FREELIST_DEBUG           0
  34
  35 static int savage_do_cleanup_bci(drm_device_t *dev);
  36
  37 static int
  38 savage_bci_wait_fifo_shadow(drm_savage_private_t * dev_priv, unsigned int n)
  39 {
  40         uint32_t mask = dev_priv->status_used_mask;
  41         uint32_t threshold = dev_priv->bci_threshold_hi;
  42         uint32_t status;
  43         int i;
  44
  45 #if SAVAGE_BCI_DEBUG
  46         if (n > dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - threshold)
  47                 DRM_ERROR("Trying to emit %d words "
  48                           "(more than guaranteed space in COB)\n", n);
  49 #endif
  50
  51         for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
  52                 DRM_MEMORYBARRIER();
  53                 status = dev_priv->status_ptr[0];
  54                 if ((status & mask) < threshold)
  55                         return 0;
  56                 DRM_UDELAY(1);
  57         }
  58
  59 #if SAVAGE_BCI_DEBUG
  60         DRM_ERROR("failed!\n");
  61         DRM_INFO("   status=0x%08x, threshold=0x%08x\n", status, threshold);
  62 #endif
  63         return DRM_ERR(EBUSY);
  64 }
  65
  66 static int
  67 savage_bci_wait_fifo_s3d(drm_savage_private_t * dev_priv, unsigned int n)
  68 {
  69         uint32_t maxUsed = dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - n;
  70         uint32_t status;
  71         int i;
  72
  73         for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
  74                 status = SAVAGE_READ(SAVAGE_STATUS_WORD0);
  75                 if ((status & SAVAGE_FIFO_USED_MASK_S3D) <= maxUsed)
  76                         return 0;
  77                 DRM_UDELAY(1);
  78         }
  79
  80 #if SAVAGE_BCI_DEBUG
  81         DRM_ERROR("failed!\n");
  82         DRM_INFO("   status=0x%08x\n", status);
  83 #endif
  84         return DRM_ERR(EBUSY);
  85 }
  86
  87 static int
  88 savage_bci_wait_fifo_s4(drm_savage_private_t * dev_priv, unsigned int n)
  89 {
  90         uint32_t maxUsed = dev_priv->cob_size + SAVAGE_BCI_FIFO_SIZE - n;
  91         uint32_t status;
  92         int i;
  93
  94         for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
  95                 status = SAVAGE_READ(SAVAGE_ALT_STATUS_WORD0);
  96                 if ((status & SAVAGE_FIFO_USED_MASK_S4) <= maxUsed)
  97                         return 0;
  98                 DRM_UDELAY(1);
  99         }
 100
 101 #if SAVAGE_BCI_DEBUG
 102         DRM_ERROR("failed!\n");
 103         DRM_INFO("   status=0x%08x\n", status);
 104 #endif
 105         return DRM_ERR(EBUSY);
 106 }
 107
 108 /*
 109  * Waiting for events.
 110  *
 111  * The BIOSresets the event tag to 0 on mode changes. Therefore we
 112  * never emit 0 to the event tag. If we find a 0 event tag we know the
 113  * BIOS stomped on it and return success assuming that the BIOS waited
 114  * for engine idle.
 115  *
 116  * Note: if the Xserver uses the event tag it has to follow the same
 117  * rule. Otherwise there may be glitches every 2^16 events.
 118  */
 119 static int
 120 savage_bci_wait_event_shadow(drm_savage_private_t * dev_priv, uint16_t e)
 121 {
 122         uint32_t status;
 123         int i;
 124
 125         for (i = 0; i < SAVAGE_EVENT_USEC_TIMEOUT; i++) {
 126                 DRM_MEMORYBARRIER();
 127                 status = dev_priv->status_ptr[1];
 128                 if ((((status & 0xffff) - e) & 0xffff) <= 0x7fff ||
 129                     (status & 0xffff) == 0)
 130                         return 0;
 131                 DRM_UDELAY(1);
 132         }
 133
 134 #if SAVAGE_BCI_DEBUG
 135         DRM_ERROR("failed!\n");
 136         DRM_INFO("   status=0x%08x, e=0x%04x\n", status, e);
 137 #endif
 138
 139         return DRM_ERR(EBUSY);
 140 }
 141
 142 static int
 143 savage_bci_wait_event_reg(drm_savage_private_t * dev_priv, uint16_t e)
 144 {
 145         uint32_t status;
 146         int i;
 147
 148         for (i = 0; i < SAVAGE_EVENT_USEC_TIMEOUT; i++) {
 149                 status = SAVAGE_READ(SAVAGE_STATUS_WORD1);
 150                 if ((((status & 0xffff) - e) & 0xffff) <= 0x7fff ||
 151                     (status & 0xffff) == 0)
 152                         return 0;
 153                 DRM_UDELAY(1);
 154         }
 155
 156 #if SAVAGE_BCI_DEBUG
 157         DRM_ERROR("failed!\n");
 158         DRM_INFO("   status=0x%08x, e=0x%04x\n", status, e);
 159 #endif
 160
 161         return DRM_ERR(EBUSY);
 162 }
 163
 164 uint16_t savage_bci_emit_event(drm_savage_private_t * dev_priv,
 165                                unsigned int flags)
 166 {
 167         uint16_t count;
 168         BCI_LOCALS;
 169
 170         if (dev_priv->status_ptr) {
 171                 /* coordinate with Xserver */
 172                 count = dev_priv->status_ptr[1023];
 173                 if (count < dev_priv->event_counter)
 174                         dev_priv->event_wrap++;
 175         } else {
 176                 count = dev_priv->event_counter;
 177         }
 178         count = (count + 1) & 0xffff;
 179         if (count == 0) {
 180                 count++;        /* See the comment above savage_wait_event_*. */
 181                 dev_priv->event_wrap++;
 182         }
 183         dev_priv->event_counter = count;
 184         if (dev_priv->status_ptr)
 185                 dev_priv->status_ptr[1023] = (uint32_t) count;
 186
 187         if ((flags & (SAVAGE_WAIT_2D | SAVAGE_WAIT_3D))) {
 188                 unsigned int wait_cmd = BCI_CMD_WAIT;
 189                 if ((flags & SAVAGE_WAIT_2D))
 190                         wait_cmd |= BCI_CMD_WAIT_2D;
 191                 if ((flags & SAVAGE_WAIT_3D))
 192                         wait_cmd |= BCI_CMD_WAIT_3D;
 193                 BEGIN_BCI(2);
 194                 BCI_WRITE(wait_cmd);
 195         } else {
 196                 BEGIN_BCI(1);
 197         }
 198         BCI_WRITE(BCI_CMD_UPDATE_EVENT_TAG | (uint32_t) count);
 199
 200         return count;
 201 }
 202
 203 /*
 204  * Freelist management
 205  */
 206 static int savage_freelist_init(drm_device_t * dev)
 207 {
 208         drm_savage_private_t *dev_priv = dev->dev_private;
 209         drm_device_dma_t *dma = dev->dma;
 210         drm_buf_t *buf;
 211         drm_savage_buf_priv_t *entry;
 212         int i;
 213         DRM_DEBUG("count=%d\n", dma->buf_count);
 214
 215         dev_priv->head.next = &dev_priv->tail;
 216         dev_priv->head.prev = NULL;
 217         dev_priv->head.buf = NULL;
 218
 219         dev_priv->tail.next = NULL;
 220         dev_priv->tail.prev = &dev_priv->head;
 221         dev_priv->tail.buf = NULL;
 222
 223         for (i = 0; i < dma->buf_count; i++) {
 224                 buf = dma->buflist[i];
 225                 entry = buf->dev_private;
 226
 227                 SET_AGE(&entry->age, 0, 0);
 228                 entry->buf = buf;
 229
 230                 entry->next = dev_priv->head.next;
 231                 entry->prev = &dev_priv->head;
 232                 dev_priv->head.next->prev = entry;
 233                 dev_priv->head.next = entry;
 234         }
 235
 236         return 0;
 237 }
 238
 239 static drm_buf_t *savage_freelist_get(drm_device_t * dev)
 240 {
 241         drm_savage_private_t *dev_priv = dev->dev_private;
 242         drm_savage_buf_priv_t *tail = dev_priv->tail.prev;
 243         uint16_t event;
 244         unsigned int wrap;
 245         DRM_DEBUG("\n");
 246
 247         UPDATE_EVENT_COUNTER();
 248         if (dev_priv->status_ptr)
 249                 event = dev_priv->status_ptr[1] & 0xffff;
 250         else
 251                 event = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff;
 252         wrap = dev_priv->event_wrap;
 253         if (event > dev_priv->event_counter)
 254                 wrap--;         /* hardware hasn't passed the last wrap yet */
 255
 256         DRM_DEBUG("   tail=0x%04x %d\n", tail->age.event, tail->age.wrap);
 257         DRM_DEBUG("   head=0x%04x %d\n", event, wrap);
 258
 259         if (tail->buf && (TEST_AGE(&tail->age, event, wrap) || event == 0)) {
 260                 drm_savage_buf_priv_t *next = tail->next;
 261                 drm_savage_buf_priv_t *prev = tail->prev;
 262                 prev->next = next;
 263                 next->prev = prev;
 264                 tail->next = tail->prev = NULL;
 265                 return tail->buf;
 266         }
 267
 268         DRM_DEBUG("returning NULL, tail->buf=%p!\n", tail->buf);
 269         return NULL;
 270 }
 271
 272 void savage_freelist_put(drm_device_t * dev, drm_buf_t * buf)
 273 {
 274         drm_savage_private_t *dev_priv = dev->dev_private;
 275         drm_savage_buf_priv_t *entry = buf->dev_private, *prev, *next;
 276
 277         DRM_DEBUG("age=0x%04x wrap=%d\n", entry->age.event, entry->age.wrap);
 278
 279         if (entry->next != NULL || entry->prev != NULL) {
 280                 DRM_ERROR("entry already on freelist.\n");
 281                 return;
 282         }
 283
 284         prev = &dev_priv->head;
 285         next = prev->next;
 286         prev->next = entry;
 287         next->prev = entry;
 288         entry->prev = prev;
 289         entry->next = next;
 290 }
 291
 292 /*
 293  * Command DMA
 294  */
 295 static int savage_dma_init(drm_savage_private_t * dev_priv)
 296 {
 297         unsigned int i;
 298
 299         dev_priv->nr_dma_pages = dev_priv->cmd_dma->size /
 300             (SAVAGE_DMA_PAGE_SIZE * 4);
 301         dev_priv->dma_pages = drm_alloc(sizeof(drm_savage_dma_page_t) *
 302                                         dev_priv->nr_dma_pages, DRM_MEM_DRIVER);
 303         if (dev_priv->dma_pages == NULL)
 304                 return DRM_ERR(ENOMEM);
 305
 306         for (i = 0; i < dev_priv->nr_dma_pages; ++i) {
 307                 SET_AGE(&dev_priv->dma_pages[i].age, 0, 0);
 308                 dev_priv->dma_pages[i].used = 0;
 309                 dev_priv->dma_pages[i].flushed = 0;
 310         }
 311         SET_AGE(&dev_priv->last_dma_age, 0, 0);
 312
 313         dev_priv->first_dma_page = 0;
 314         dev_priv->current_dma_page = 0;
 315
 316         return 0;
 317 }
 318
 319 void savage_dma_reset(drm_savage_private_t * dev_priv)
 320 {
 321         uint16_t event;
 322         unsigned int wrap, i;
 323         event = savage_bci_emit_event(dev_priv, 0);
 324         wrap = dev_priv->event_wrap;
 325         for (i = 0; i < dev_priv->nr_dma_pages; ++i) {
 326                 SET_AGE(&dev_priv->dma_pages[i].age, event, wrap);
 327                 dev_priv->dma_pages[i].used = 0;
 328                 dev_priv->dma_pages[i].flushed = 0;
 329         }
 330         SET_AGE(&dev_priv->last_dma_age, event, wrap);
 331         dev_priv->first_dma_page = dev_priv->current_dma_page = 0;
 332 }
 333
 334 void savage_dma_wait(drm_savage_private_t * dev_priv, unsigned int page)
 335 {
 336         uint16_t event;
 337         unsigned int wrap;
 338
 339         /* Faked DMA buffer pages don't age. */
 340         if (dev_priv->cmd_dma == &dev_priv->fake_dma)
 341                 return;
 342
 343         UPDATE_EVENT_COUNTER();
 344         if (dev_priv->status_ptr)
 345                 event = dev_priv->status_ptr[1] & 0xffff;
 346         else
 347                 event = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff;
 348         wrap = dev_priv->event_wrap;
 349         if (event > dev_priv->event_counter)
 350                 wrap--;         /* hardware hasn't passed the last wrap yet */
 351
 352         if (dev_priv->dma_pages[page].age.wrap > wrap ||
 353             (dev_priv->dma_pages[page].age.wrap == wrap &&
 354              dev_priv->dma_pages[page].age.event > event)) {
 355                 if (dev_priv->wait_evnt(dev_priv,
 356                                         dev_priv->dma_pages[page].age.event)
 357                     < 0)
 358                         DRM_ERROR("wait_evnt failed!\n");
 359         }
 360 }
 361
 362 uint32_t *savage_dma_alloc(drm_savage_private_t * dev_priv, unsigned int n)
 363 {
 364         unsigned int cur = dev_priv->current_dma_page;
 365         unsigned int rest = SAVAGE_DMA_PAGE_SIZE -
 366             dev_priv->dma_pages[cur].used;
 367         unsigned int nr_pages = (n - rest + SAVAGE_DMA_PAGE_SIZE - 1) /
 368             SAVAGE_DMA_PAGE_SIZE;
 369         uint32_t *dma_ptr;
 370         unsigned int i;
 371
 372         DRM_DEBUG("cur=%u, cur->used=%u, n=%u, rest=%u, nr_pages=%u\n",
 373                   cur, dev_priv->dma_pages[cur].used, n, rest, nr_pages);
 374
 375         if (cur + nr_pages < dev_priv->nr_dma_pages) {
 376                 dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle +
 377                     cur * SAVAGE_DMA_PAGE_SIZE + dev_priv->dma_pages[cur].used;
 378                 if (n < rest)
 379                         rest = n;
 380                 dev_priv->dma_pages[cur].used += rest;
 381                 n -= rest;
 382                 cur++;
 383         } else {
 384                 dev_priv->dma_flush(dev_priv);
 385                 nr_pages =
 386                     (n + SAVAGE_DMA_PAGE_SIZE - 1) / SAVAGE_DMA_PAGE_SIZE;
 387                 for (i = cur; i < dev_priv->nr_dma_pages; ++i) {
 388                         dev_priv->dma_pages[i].age = dev_priv->last_dma_age;
 389                         dev_priv->dma_pages[i].used = 0;
 390                         dev_priv->dma_pages[i].flushed = 0;
 391                 }
 392                 dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle;
 393                 dev_priv->first_dma_page = cur = 0;
 394         }
 395         for (i = cur; nr_pages > 0; ++i, --nr_pages) {
 396 #if SAVAGE_DMA_DEBUG
 397                 if (dev_priv->dma_pages[i].used) {
 398                         DRM_ERROR("unflushed page %u: used=%u\n",
 399                                   i, dev_priv->dma_pages[i].used);
 400                 }
 401 #endif
 402                 if (n > SAVAGE_DMA_PAGE_SIZE)
 403                         dev_priv->dma_pages[i].used = SAVAGE_DMA_PAGE_SIZE;
 404                 else
 405                         dev_priv->dma_pages[i].used = n;
 406                 n -= SAVAGE_DMA_PAGE_SIZE;
 407         }
 408         dev_priv->current_dma_page = --i;
 409
 410         DRM_DEBUG("cur=%u, cur->used=%u, n=%u\n",
 411                   i, dev_priv->dma_pages[i].used, n);
 412
 413         savage_dma_wait(dev_priv, dev_priv->current_dma_page);
 414
 415         return dma_ptr;
 416 }
 417
 418 static void savage_dma_flush(drm_savage_private_t * dev_priv)
 419 {
 420         unsigned int first = dev_priv->first_dma_page;
 421         unsigned int cur = dev_priv->current_dma_page;
 422         uint16_t event;
 423         unsigned int wrap, pad, align, len, i;
 424         unsigned long phys_addr;
 425         BCI_LOCALS;
 426
 427         if (first == cur &&
 428             dev_priv->dma_pages[cur].used == dev_priv->dma_pages[cur].flushed)
 429                 return;
 430
 431         /* pad length to multiples of 2 entries
 432          * align start of next DMA block to multiles of 8 entries */
 433         pad = -dev_priv->dma_pages[cur].used & 1;
 434         align = -(dev_priv->dma_pages[cur].used + pad) & 7;
 435
 436         DRM_DEBUG("first=%u, cur=%u, first->flushed=%u, cur->used=%u, "
 437                   "pad=%u, align=%u\n",
 438                   first, cur, dev_priv->dma_pages[first].flushed,
 439                   dev_priv->dma_pages[cur].used, pad, align);
 440
 441         /* pad with noops */
 442         if (pad) {
 443                 uint32_t *dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle +
 444                     cur * SAVAGE_DMA_PAGE_SIZE + dev_priv->dma_pages[cur].used;
 445                 dev_priv->dma_pages[cur].used += pad;
 446                 while (pad != 0) {
 447                         *dma_ptr++ = BCI_CMD_WAIT;
 448                         pad--;
 449                 }
 450         }
 451
 452         DRM_MEMORYBARRIER();
 453
 454         /* do flush ... */
 455         phys_addr = dev_priv->cmd_dma->offset +
 456             (first * SAVAGE_DMA_PAGE_SIZE +
 457              dev_priv->dma_pages[first].flushed) * 4;
 458         len = (cur - first) * SAVAGE_DMA_PAGE_SIZE +
 459             dev_priv->dma_pages[cur].used - dev_priv->dma_pages[first].flushed;
 460
 461         DRM_DEBUG("phys_addr=%lx, len=%u\n",
 462                   phys_addr | dev_priv->dma_type, len);
 463
 464         BEGIN_BCI(3);
 465         BCI_SET_REGISTERS(SAVAGE_DMABUFADDR, 1);
 466         BCI_WRITE(phys_addr | dev_priv->dma_type);
 467         BCI_DMA(len);
 468
 469         /* fix alignment of the start of the next block */
 470         dev_priv->dma_pages[cur].used += align;
 471
 472         /* age DMA pages */
 473         event = savage_bci_emit_event(dev_priv, 0);
 474         wrap = dev_priv->event_wrap;
 475         for (i = first; i < cur; ++i) {
 476                 SET_AGE(&dev_priv->dma_pages[i].age, event, wrap);
 477                 dev_priv->dma_pages[i].used = 0;
 478                 dev_priv->dma_pages[i].flushed = 0;
 479         }
 480         /* age the current page only when it's full */
 481         if (dev_priv->dma_pages[cur].used == SAVAGE_DMA_PAGE_SIZE) {
 482                 SET_AGE(&dev_priv->dma_pages[cur].age, event, wrap);
 483                 dev_priv->dma_pages[cur].used = 0;
 484                 dev_priv->dma_pages[cur].flushed = 0;
 485                 /* advance to next page */
 486                 cur++;
 487                 if (cur == dev_priv->nr_dma_pages)
 488                         cur = 0;
 489                 dev_priv->first_dma_page = dev_priv->current_dma_page = cur;
 490         } else {
 491                 dev_priv->first_dma_page = cur;
 492                 dev_priv->dma_pages[cur].flushed = dev_priv->dma_pages[i].used;
 493         }
 494         SET_AGE(&dev_priv->last_dma_age, event, wrap);
 495
 496         DRM_DEBUG("first=cur=%u, cur->used=%u, cur->flushed=%u\n", cur,
 497                   dev_priv->dma_pages[cur].used,
 498                   dev_priv->dma_pages[cur].flushed);
 499 }
 500
 501 static void savage_fake_dma_flush(drm_savage_private_t * dev_priv)
 502 {
 503         unsigned int i, j;
 504         BCI_LOCALS;
 505
 506         if (dev_priv->first_dma_page == dev_priv->current_dma_page &&
 507             dev_priv->dma_pages[dev_priv->current_dma_page].used == 0)
 508                 return;
 509
 510         DRM_DEBUG("first=%u, cur=%u, cur->used=%u\n",
 511                   dev_priv->first_dma_page, dev_priv->current_dma_page,
 512                   dev_priv->dma_pages[dev_priv->current_dma_page].used);
 513
 514         for (i = dev_priv->first_dma_page;
 515              i <= dev_priv->current_dma_page && dev_priv->dma_pages[i].used;
 516              ++i) {
 517                 uint32_t *dma_ptr = (uint32_t *) dev_priv->cmd_dma->handle +
 518                     i * SAVAGE_DMA_PAGE_SIZE;
 519 #if SAVAGE_DMA_DEBUG
 520                 /* Sanity check: all pages except the last one must be full. */
 521                 if (i < dev_priv->current_dma_page &&
 522                     dev_priv->dma_pages[i].used != SAVAGE_DMA_PAGE_SIZE) {
 523                         DRM_ERROR("partial DMA page %u: used=%u",
 524                                   i, dev_priv->dma_pages[i].used);
 525                 }
 526 #endif
 527                 BEGIN_BCI(dev_priv->dma_pages[i].used);
 528                 for (j = 0; j < dev_priv->dma_pages[i].used; ++j) {
 529                         BCI_WRITE(dma_ptr[j]);
 530                 }
 531                 dev_priv->dma_pages[i].used = 0;
 532         }
 533
 534         /* reset to first page */
 535         dev_priv->first_dma_page = dev_priv->current_dma_page = 0;
 536 }
 537
 538 int savage_driver_load(drm_device_t *dev, unsigned long chipset)
 539 {
 540         drm_savage_private_t *dev_priv;
 541
 542         dev_priv = drm_alloc(sizeof(drm_savage_private_t), DRM_MEM_DRIVER);
 543         if (dev_priv == NULL)
 544                 return DRM_ERR(ENOMEM);
 545
 546         memset(dev_priv, 0, sizeof(drm_savage_private_t));
 547         dev->dev_private = (void *)dev_priv;
 548
 549         dev_priv->chipset = (enum savage_family)chipset;
 550
 551         return 0;
 552 }
 553
 554
 555 /*
 556  * Initalize mappings. On Savage4 and SavageIX the alignment
 557  * and size of the aperture is not suitable for automatic MTRR setup
 558  * in drm_addmap. Therefore we add them manually before the maps are
 559  * initialized, and tear them down on last close.
 560  */
 561 int savage_driver_firstopen(drm_device_t *dev)
 562 {
 563         drm_savage_private_t *dev_priv = dev->dev_private;
 564         unsigned long mmio_base, fb_base, fb_size, aperture_base;
 565         /* fb_rsrc and aper_rsrc aren't really used currently, but still exist
 566          * in case we decide we need information on the BAR for BSD in the
 567          * future.
 568          */
 569         unsigned int fb_rsrc, aper_rsrc;
 570         int ret = 0;
 571
 572         dev_priv->mtrr[0].handle = -1;
 573         dev_priv->mtrr[1].handle = -1;
 574         dev_priv->mtrr[2].handle = -1;
 575         if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
 576                 fb_rsrc = 0;
 577                 fb_base = drm_get_resource_start(dev, 0);
 578                 fb_size = SAVAGE_FB_SIZE_S3;
 579                 mmio_base = fb_base + SAVAGE_FB_SIZE_S3;
 580                 aper_rsrc = 0;
 581                 aperture_base = fb_base + SAVAGE_APERTURE_OFFSET;
 582                 /* this should always be true */
 583                 if (drm_get_resource_len(dev, 0) == 0x08000000) {
 584                         /* Don't make MMIO write-cobining! We need 3
 585                          * MTRRs. */
 586                         dev_priv->mtrr[0].base = fb_base;
 587                         dev_priv->mtrr[0].size = 0x01000000;
 588                         dev_priv->mtrr[0].handle =
 589                             drm_mtrr_add(dev_priv->mtrr[0].base,
 590                                          dev_priv->mtrr[0].size, DRM_MTRR_WC);
 591                         dev_priv->mtrr[1].base = fb_base + 0x02000000;
 592                         dev_priv->mtrr[1].size = 0x02000000;
 593                         dev_priv->mtrr[1].handle =
 594                             drm_mtrr_add(dev_priv->mtrr[1].base,
 595                                          dev_priv->mtrr[1].size, DRM_MTRR_WC);
 596                         dev_priv->mtrr[2].base = fb_base + 0x04000000;
 597                         dev_priv->mtrr[2].size = 0x04000000;
 598                         dev_priv->mtrr[2].handle =
 599                             drm_mtrr_add(dev_priv->mtrr[2].base,
 600                                          dev_priv->mtrr[2].size, DRM_MTRR_WC);
 601                 } else {
 602                         DRM_ERROR("strange pci_resource_len %08lx\n",
 603                                   drm_get_resource_len(dev, 0));
 604                 }
 605         } else if (dev_priv->chipset != S3_SUPERSAVAGE &&
 606                    dev_priv->chipset != S3_SAVAGE2000) {
 607                 mmio_base = drm_get_resource_start(dev, 0);
 608                 fb_rsrc = 1;
 609                 fb_base = drm_get_resource_start(dev, 1);
 610                 fb_size = SAVAGE_FB_SIZE_S4;
 611                 aper_rsrc = 1;
 612                 aperture_base = fb_base + SAVAGE_APERTURE_OFFSET;
 613                 /* this should always be true */
 614                 if (drm_get_resource_len(dev, 1) == 0x08000000) {
 615                         /* Can use one MTRR to cover both fb and
 616                          * aperture. */
 617                         dev_priv->mtrr[0].base = fb_base;
 618                         dev_priv->mtrr[0].size = 0x08000000;
 619                         dev_priv->mtrr[0].handle =
 620                             drm_mtrr_add(dev_priv->mtrr[0].base,
 621                                          dev_priv->mtrr[0].size, DRM_MTRR_WC);
 622                 } else {
 623                         DRM_ERROR("strange pci_resource_len %08lx\n",
 624                                   drm_get_resource_len(dev, 1));
 625                 }
 626         } else {
 627                 mmio_base = drm_get_resource_start(dev, 0);
 628                 fb_rsrc = 1;
 629                 fb_base = drm_get_resource_start(dev, 1);
 630                 fb_size = drm_get_resource_len(dev, 1);
 631                 aper_rsrc = 2;
 632                 aperture_base = drm_get_resource_start(dev, 2);
 633                 /* Automatic MTRR setup will do the right thing. */
 634         }
 635
 636         ret = drm_addmap(dev, mmio_base, SAVAGE_MMIO_SIZE, _DRM_REGISTERS,
 637                          _DRM_READ_ONLY, &dev_priv->mmio);
 638         if (ret)
 639                 return ret;
 640
 641         ret = drm_addmap(dev, fb_base, fb_size, _DRM_FRAME_BUFFER,
 642                          _DRM_WRITE_COMBINING, &dev_priv->fb);
 643         if (ret)
 644                 return ret;
 645
 646         ret = drm_addmap(dev, aperture_base, SAVAGE_APERTURE_SIZE,
 647                          _DRM_FRAME_BUFFER, _DRM_WRITE_COMBINING,
 648                          &dev_priv->aperture);
 649         if (ret)
 650                 return ret;
 651
 652         return ret;
 653 }
 654
 655 /*
 656  * Delete MTRRs and free device-private data.
 657  */
 658 void savage_driver_lastclose(drm_device_t *dev)
 659 {
 660         drm_savage_private_t *dev_priv = dev->dev_private;
 661         int i;
 662
 663         for (i = 0; i < 3; ++i)
 664                 if (dev_priv->mtrr[i].handle >= 0)
 665                         drm_mtrr_del(dev_priv->mtrr[i].handle,
 666                                  dev_priv->mtrr[i].base,
 667                                  dev_priv->mtrr[i].size, DRM_MTRR_WC);
 668 }
 669
 670 int savage_driver_unload(drm_device_t *dev)
 671 {
 672         drm_savage_private_t *dev_priv = dev->dev_private;
 673
 674         drm_free(dev_priv, sizeof(drm_savage_private_t), DRM_MEM_DRIVER);
 675
 676         return 0;
 677 }
 678
 679 static int savage_do_init_bci(drm_device_t * dev, drm_savage_init_t * init)
 680 {
 681         drm_savage_private_t *dev_priv = dev->dev_private;
 682
 683         if (init->fb_bpp != 16 && init->fb_bpp != 32) {
 684                 DRM_ERROR("invalid frame buffer bpp %d!\n", init->fb_bpp);
 685                 return DRM_ERR(EINVAL);
 686         }
 687         if (init->depth_bpp != 16 && init->depth_bpp != 32) {
 688                 DRM_ERROR("invalid depth buffer bpp %d!\n", init->fb_bpp);
 689                 return DRM_ERR(EINVAL);
 690         }
 691         if (init->dma_type != SAVAGE_DMA_AGP &&
 692             init->dma_type != SAVAGE_DMA_PCI) {
 693                 DRM_ERROR("invalid dma memory type %d!\n", init->dma_type);
 694                 return DRM_ERR(EINVAL);
 695         }
 696
 697         dev_priv->cob_size = init->cob_size;
 698         dev_priv->bci_threshold_lo = init->bci_threshold_lo;
 699         dev_priv->bci_threshold_hi = init->bci_threshold_hi;
 700         dev_priv->dma_type = init->dma_type;
 701
 702         dev_priv->fb_bpp = init->fb_bpp;
 703         dev_priv->front_offset = init->front_offset;
 704         dev_priv->front_pitch = init->front_pitch;
 705         dev_priv->back_offset = init->back_offset;
 706         dev_priv->back_pitch = init->back_pitch;
 707         dev_priv->depth_bpp = init->depth_bpp;
 708         dev_priv->depth_offset = init->depth_offset;
 709         dev_priv->depth_pitch = init->depth_pitch;
 710
 711         dev_priv->texture_offset = init->texture_offset;
 712         dev_priv->texture_size = init->texture_size;
 713
 714         DRM_GETSAREA();
 715         if (!dev_priv->sarea) {
 716                 DRM_ERROR("could not find sarea!\n");
 717                 savage_do_cleanup_bci(dev);
 718                 return DRM_ERR(EINVAL);
 719         }
 720         if (init->status_offset != 0) {
 721                 dev_priv->status = drm_core_findmap(dev, init->status_offset);
 722                 if (!dev_priv->status) {
 723                         DRM_ERROR("could not find shadow status region!\n");
 724                         savage_do_cleanup_bci(dev);
 725                         return DRM_ERR(EINVAL);
 726                 }
 727         } else {
 728                 dev_priv->status = NULL;
 729         }
 730         if (dev_priv->dma_type == SAVAGE_DMA_AGP && init->buffers_offset) {
 731                 dev->agp_buffer_map = drm_core_findmap(dev,
 732                                                        init->buffers_offset);
 733                 if (!dev->agp_buffer_map) {
 734                         DRM_ERROR("could not find DMA buffer region!\n");
 735                         savage_do_cleanup_bci(dev);
 736                         return DRM_ERR(EINVAL);
 737                 }
 738                 drm_core_ioremap(dev->agp_buffer_map, dev);
 739                 if (!dev->agp_buffer_map) {
 740                         DRM_ERROR("failed to ioremap DMA buffer region!\n");
 741                         savage_do_cleanup_bci(dev);
 742                         return DRM_ERR(ENOMEM);
 743                 }
 744         }
 745         if (init->agp_textures_offset) {
 746                 dev_priv->agp_textures =
 747                     drm_core_findmap(dev, init->agp_textures_offset);
 748                 if (!dev_priv->agp_textures) {
 749                         DRM_ERROR("could not find agp texture region!\n");
 750                         savage_do_cleanup_bci(dev);
 751                         return DRM_ERR(EINVAL);
 752                 }
 753         } else {
 754                 dev_priv->agp_textures = NULL;
 755         }
 756
 757         if (init->cmd_dma_offset) {
 758                 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
 759                         DRM_ERROR("command DMA not supported on "
 760                                   "Savage3D/MX/IX.\n");
 761                         savage_do_cleanup_bci(dev);
 762                         return DRM_ERR(EINVAL);
 763                 }
 764                 if (dev->dma && dev->dma->buflist) {
 765                         DRM_ERROR("command and vertex DMA not supported "
 766                                   "at the same time.\n");
 767                         savage_do_cleanup_bci(dev);
 768                         return DRM_ERR(EINVAL);
 769                 }
 770                 dev_priv->cmd_dma = drm_core_findmap(dev, init->cmd_dma_offset);
 771                 if (!dev_priv->cmd_dma) {
 772                         DRM_ERROR("could not find command DMA region!\n");
 773                         savage_do_cleanup_bci(dev);
 774                         return DRM_ERR(EINVAL);
 775                 }
 776                 if (dev_priv->dma_type == SAVAGE_DMA_AGP) {
 777                         if (dev_priv->cmd_dma->type != _DRM_AGP) {
 778                                 DRM_ERROR("AGP command DMA region is not a "
 779                                           "_DRM_AGP map!\n");
 780                                 savage_do_cleanup_bci(dev);
 781                                 return DRM_ERR(EINVAL);
 782                         }
 783                         drm_core_ioremap(dev_priv->cmd_dma, dev);
 784                         if (!dev_priv->cmd_dma->handle) {
 785                                 DRM_ERROR("failed to ioremap command "
 786                                           "DMA region!\n");
 787                                 savage_do_cleanup_bci(dev);
 788                                 return DRM_ERR(ENOMEM);
 789                         }
 790                 } else if (dev_priv->cmd_dma->type != _DRM_CONSISTENT) {
 791                         DRM_ERROR("PCI command DMA region is not a "
 792                                   "_DRM_CONSISTENT map!\n");
 793                         savage_do_cleanup_bci(dev);
 794                         return DRM_ERR(EINVAL);
 795                 }
 796         } else {
 797                 dev_priv->cmd_dma = NULL;
 798         }
 799
 800         dev_priv->dma_flush = savage_dma_flush;
 801         if (!dev_priv->cmd_dma) {
 802                 DRM_DEBUG("falling back to faked command DMA.\n");
 803                 dev_priv->fake_dma.offset = 0;
 804                 dev_priv->fake_dma.size = SAVAGE_FAKE_DMA_SIZE;
 805                 dev_priv->fake_dma.type = _DRM_SHM;
 806                 dev_priv->fake_dma.handle = drm_alloc(SAVAGE_FAKE_DMA_SIZE,
 807                                                       DRM_MEM_DRIVER);
 808                 if (!dev_priv->fake_dma.handle) {
 809                         DRM_ERROR("could not allocate faked DMA buffer!\n");
 810                         savage_do_cleanup_bci(dev);
 811                         return DRM_ERR(ENOMEM);
 812                 }
 813                 dev_priv->cmd_dma = &dev_priv->fake_dma;
 814                 dev_priv->dma_flush = savage_fake_dma_flush;
 815         }
 816
 817         dev_priv->sarea_priv =
 818             (drm_savage_sarea_t *) ((uint8_t *) dev_priv->sarea->handle +
 819                                     init->sarea_priv_offset);
 820
 821         /* setup bitmap descriptors */
 822         {
 823                 unsigned int color_tile_format;
 824                 unsigned int depth_tile_format;
 825                 unsigned int front_stride, back_stride, depth_stride;
 826                 if (dev_priv->chipset <= S3_SAVAGE4) {
 827                         color_tile_format = dev_priv->fb_bpp == 16 ?
 828                             SAVAGE_BD_TILE_16BPP : SAVAGE_BD_TILE_32BPP;
 829                         depth_tile_format = dev_priv->depth_bpp == 16 ?
 830                             SAVAGE_BD_TILE_16BPP : SAVAGE_BD_TILE_32BPP;
 831                 } else {
 832                         color_tile_format = SAVAGE_BD_TILE_DEST;
 833                         depth_tile_format = SAVAGE_BD_TILE_DEST;
 834                 }
 835                 front_stride = dev_priv->front_pitch / (dev_priv->fb_bpp / 8);
 836                 back_stride = dev_priv->back_pitch / (dev_priv->fb_bpp / 8);
 837                 depth_stride =
 838                     dev_priv->depth_pitch / (dev_priv->depth_bpp / 8);
 839
 840                 dev_priv->front_bd = front_stride | SAVAGE_BD_BW_DISABLE |
 841                     (dev_priv->fb_bpp << SAVAGE_BD_BPP_SHIFT) |
 842                     (color_tile_format << SAVAGE_BD_TILE_SHIFT);
 843
 844                 dev_priv->back_bd = back_stride | SAVAGE_BD_BW_DISABLE |
 845                     (dev_priv->fb_bpp << SAVAGE_BD_BPP_SHIFT) |
 846                     (color_tile_format << SAVAGE_BD_TILE_SHIFT);
 847
 848                 dev_priv->depth_bd = depth_stride | SAVAGE_BD_BW_DISABLE |
 849                     (dev_priv->depth_bpp << SAVAGE_BD_BPP_SHIFT) |
 850                     (depth_tile_format << SAVAGE_BD_TILE_SHIFT);
 851         }
 852
 853         /* setup status and bci ptr */
 854         dev_priv->event_counter = 0;
 855         dev_priv->event_wrap = 0;
 856         dev_priv->bci_ptr = (volatile uint32_t *)
 857             ((uint8_t *) dev_priv->mmio->handle + SAVAGE_BCI_OFFSET);
 858         if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
 859                 dev_priv->status_used_mask = SAVAGE_FIFO_USED_MASK_S3D;
 860         } else {
 861                 dev_priv->status_used_mask = SAVAGE_FIFO_USED_MASK_S4;
 862         }
 863         if (dev_priv->status != NULL) {
 864                 dev_priv->status_ptr =
 865                     (volatile uint32_t *)dev_priv->status->handle;
 866                 dev_priv->wait_fifo = savage_bci_wait_fifo_shadow;
 867                 dev_priv->wait_evnt = savage_bci_wait_event_shadow;
 868                 dev_priv->status_ptr[1023] = dev_priv->event_counter;
 869         } else {
 870                 dev_priv->status_ptr = NULL;
 871                 if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
 872                         dev_priv->wait_fifo = savage_bci_wait_fifo_s3d;
 873                 } else {
 874                         dev_priv->wait_fifo = savage_bci_wait_fifo_s4;
 875                 }
 876                 dev_priv->wait_evnt = savage_bci_wait_event_reg;
 877         }
 878
 879         /* cliprect functions */
 880         if (S3_SAVAGE3D_SERIES(dev_priv->chipset))
 881                 dev_priv->emit_clip_rect = savage_emit_clip_rect_s3d;
 882         else
 883                 dev_priv->emit_clip_rect = savage_emit_clip_rect_s4;
 884
 885         if (savage_freelist_init(dev) < 0) {
 886                 DRM_ERROR("could not initialize freelist\n");
 887                 savage_do_cleanup_bci(dev);
 888                 return DRM_ERR(ENOMEM);
 889         }
 890
 891         if (savage_dma_init(dev_priv) < 0) {
 892                 DRM_ERROR("could not initialize command DMA\n");
 893                 savage_do_cleanup_bci(dev);
 894                 return DRM_ERR(ENOMEM);
 895         }
 896
 897         return 0;
 898 }
 899
 900 static int savage_do_cleanup_bci(drm_device_t * dev)
 901 {
 902         drm_savage_private_t *dev_priv = dev->dev_private;
 903
 904         if (dev_priv->cmd_dma == &dev_priv->fake_dma) {
 905                 if (dev_priv->fake_dma.handle)
 906                         drm_free(dev_priv->fake_dma.handle,
 907                                  SAVAGE_FAKE_DMA_SIZE, DRM_MEM_DRIVER);
 908         } else if (dev_priv->cmd_dma && dev_priv->cmd_dma->handle &&
 909                    dev_priv->cmd_dma->type == _DRM_AGP &&
 910                    dev_priv->dma_type == SAVAGE_DMA_AGP)
 911                 drm_core_ioremapfree(dev_priv->cmd_dma, dev);
 912
 913         if (dev_priv->dma_type == SAVAGE_DMA_AGP &&
 914             dev->agp_buffer_map && dev->agp_buffer_map->handle) {
 915                 drm_core_ioremapfree(dev->agp_buffer_map, dev);
 916                 /* make sure the next instance (which may be running
 917                  * in PCI mode) doesn't try to use an old
 918                  * agp_buffer_map. */
 919                 dev->agp_buffer_map = NULL;
 920         }
 921
 922         if (dev_priv->dma_pages)
 923                 drm_free(dev_priv->dma_pages,
 924                          sizeof(drm_savage_dma_page_t) * dev_priv->nr_dma_pages,
 925                          DRM_MEM_DRIVER);
 926
 927         return 0;
 928 }
 929
 930 static int savage_bci_init(DRM_IOCTL_ARGS)
 931 {
 932         DRM_DEVICE;
 933         drm_savage_init_t init;
 934
 935         LOCK_TEST_WITH_RETURN(dev, filp);
 936
 937         DRM_COPY_FROM_USER_IOCTL(init, (drm_savage_init_t __user *) data,
 938                                  sizeof(init));
 939
 940         switch (init.func) {
 941         case SAVAGE_INIT_BCI:
 942                 return savage_do_init_bci(dev, &init);
 943         case SAVAGE_CLEANUP_BCI:
 944                 return savage_do_cleanup_bci(dev);
 945         }
 946
 947         return DRM_ERR(EINVAL);
 948 }
 949
 950 static int savage_bci_event_emit(DRM_IOCTL_ARGS)
 951 {
 952         DRM_DEVICE;
 953         drm_savage_private_t *dev_priv = dev->dev_private;
 954         drm_savage_event_emit_t event;
 955
 956         DRM_DEBUG("\n");
 957
 958         LOCK_TEST_WITH_RETURN(dev, filp);
 959
 960         DRM_COPY_FROM_USER_IOCTL(event, (drm_savage_event_emit_t __user *) data,
 961                                  sizeof(event));
 962
 963         event.count = savage_bci_emit_event(dev_priv, event.flags);
 964         event.count |= dev_priv->event_wrap << 16;
 965         DRM_COPY_TO_USER_IOCTL(&((drm_savage_event_emit_t __user *) data)->
 966                                count, event.count, sizeof(event.count));
 967         return 0;
 968 }
 969
 970 static int savage_bci_event_wait(DRM_IOCTL_ARGS)
 971 {
 972         DRM_DEVICE;
 973         drm_savage_private_t *dev_priv = dev->dev_private;
 974         drm_savage_event_wait_t event;
 975         unsigned int event_e, hw_e;
 976         unsigned int event_w, hw_w;
 977
 978         DRM_DEBUG("\n");
 979
 980         DRM_COPY_FROM_USER_IOCTL(event, (drm_savage_event_wait_t __user *) data,
 981                                  sizeof(event));
 982
 983         UPDATE_EVENT_COUNTER();
 984         if (dev_priv->status_ptr)
 985                 hw_e = dev_priv->status_ptr[1] & 0xffff;
 986         else
 987                 hw_e = SAVAGE_READ(SAVAGE_STATUS_WORD1) & 0xffff;
 988         hw_w = dev_priv->event_wrap;
 989         if (hw_e > dev_priv->event_counter)
 990                 hw_w--;         /* hardware hasn't passed the last wrap yet */
 991
 992         event_e = event.count & 0xffff;
 993         event_w = event.count >> 16;
 994
 995         /* Don't need to wait if
 996          * - event counter wrapped since the event was emitted or
 997          * - the hardware has advanced up to or over the event to wait for.
 998          */
 999         if (event_w < hw_w || (event_w == hw_w && event_e <= hw_e))
1000                 return 0;
1001         else
1002                 return dev_priv->wait_evnt(dev_priv, event_e);
1003 }
1004
1005 /*
1006  * DMA buffer management
1007  */
1008
1009 static int savage_bci_get_buffers(DRMFILE filp, drm_device_t *dev, drm_dma_t *d)
1010 {
1011         drm_buf_t *buf;
1012         int i;
1013
1014         for (i = d->granted_count; i < d->request_count; i++) {
1015                 buf = savage_freelist_get(dev);
1016                 if (!buf)
1017                         return DRM_ERR(EAGAIN);
1018
1019                 buf->filp = filp;
1020
1021                 if (DRM_COPY_TO_USER(&d->request_indices[i],
1022                                      &buf->idx, sizeof(buf->idx)))
1023                         return DRM_ERR(EFAULT);
1024                 if (DRM_COPY_TO_USER(&d->request_sizes[i],
1025                                      &buf->total, sizeof(buf->total)))
1026                         return DRM_ERR(EFAULT);
1027
1028                 d->granted_count++;
1029         }
1030         return 0;
1031 }
1032
1033 int savage_bci_buffers(DRM_IOCTL_ARGS)
1034 {
1035         DRM_DEVICE;
1036         drm_device_dma_t *dma = dev->dma;
1037         drm_dma_t d;
1038         int ret = 0;
1039
1040         LOCK_TEST_WITH_RETURN(dev, filp);
1041
1042         DRM_COPY_FROM_USER_IOCTL(d, (drm_dma_t __user *) data, sizeof(d));
1043
1044         /* Please don't send us buffers.
1045          */
1046         if (d.send_count != 0) {
1047                 DRM_ERROR("Process %d trying to send %d buffers via drmDMA\n",
1048                           DRM_CURRENTPID, d.send_count);
1049                 return DRM_ERR(EINVAL);
1050         }
1051
1052         /* We'll send you buffers.
1053          */
1054         if (d.request_count < 0 || d.request_count > dma->buf_count) {
1055                 DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n",
1056                           DRM_CURRENTPID, d.request_count, dma->buf_count);
1057                 return DRM_ERR(EINVAL);
1058         }
1059
1060         d.granted_count = 0;
1061
1062         if (d.request_count) {
1063                 ret = savage_bci_get_buffers(filp, dev, &d);
1064         }
1065
1066         DRM_COPY_TO_USER_IOCTL((drm_dma_t __user *) data, d, sizeof(d));
1067
1068         return ret;
1069 }
1070
1071 void savage_reclaim_buffers(drm_device_t *dev, DRMFILE filp)
1072 {
1073         drm_device_dma_t *dma = dev->dma;
1074         drm_savage_private_t *dev_priv = dev->dev_private;
1075         int i;
1076
1077         if (!dma)
1078                 return;
1079         if (!dev_priv)
1080                 return;
1081         if (!dma->buflist)
1082                 return;
1083
1084         /*i830_flush_queue(dev); */
1085
1086         for (i = 0; i < dma->buf_count; i++) {
1087                 drm_buf_t *buf = dma->buflist[i];
1088                 drm_savage_buf_priv_t *buf_priv = buf->dev_private;
1089
1090                 if (buf->filp == filp && buf_priv &&
1091                     buf_priv->next == NULL && buf_priv->prev == NULL) {
1092                         uint16_t event;
1093                         DRM_DEBUG("reclaimed from client\n");
1094                         event = savage_bci_emit_event(dev_priv, SAVAGE_WAIT_3D);
1095                         SET_AGE(&buf_priv->age, event, dev_priv->event_wrap);
1096                         savage_freelist_put(dev, buf);
1097                 }
1098         }
1099
1100         drm_core_reclaim_buffers(dev, filp);
1101 }
1102
1103 drm_ioctl_desc_t savage_ioctls[] = {
1104         [DRM_IOCTL_NR(DRM_SAVAGE_BCI_INIT)] = {savage_bci_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
1105         [DRM_IOCTL_NR(DRM_SAVAGE_BCI_CMDBUF)] = {savage_bci_cmdbuf, DRM_AUTH},
1106         [DRM_IOCTL_NR(DRM_SAVAGE_BCI_EVENT_EMIT)] = {savage_bci_event_emit, DRM_AUTH},
1107         [DRM_IOCTL_NR(DRM_SAVAGE_BCI_EVENT_WAIT)] = {savage_bci_event_wait, DRM_AUTH},
1108 };
1109
1110 int savage_max_ioctl = DRM_ARRAY_SIZE(savage_ioctls);