1 /**************************************************************************
3 * Copyright © 2007 Red Hat Inc.
4 * Copyright © 2007 Intel Corporation
5 * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sub license, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE.
24 * The above copyright notice and this permission notice (including the
25 * next paragraph) shall be included in all copies or substantial portions
29 **************************************************************************/
31 * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
32 * Keith Whitwell <keithw-at-tungstengraphics-dot-com>
33 * Eric Anholt <eric@anholt.net>
34 * Dave Airlie <airlied@linux.ie>
47 #include <sys/ioctl.h>
51 #include "intel_bufmgr.h"
52 #include "intel_bufmgr_priv.h"
57 #define DBG(...) do { \
58 if (bufmgr_gem->bufmgr.debug) \
59 fprintf(stderr, __VA_ARGS__); \
62 typedef struct _dri_bo_gem dri_bo_gem;
64 struct dri_gem_bo_bucket {
65 dri_bo_gem *head, **tail;
67 * Limit on the number of entries in this bucket.
69 * 0 means that this caching at this bucket size is disabled.
70 * -1 means that there is no limit to caching at this size.
76 /* Arbitrarily chosen, 16 means that the maximum size we'll cache for reuse
77 * is 1 << 16 pages, or 256MB.
79 #define INTEL_GEM_BO_BUCKETS 16
80 typedef struct _dri_bufmgr_gem {
87 struct drm_i915_gem_exec_object *exec_objects;
92 /** Array of lists of cached gem objects of power-of-two sizes */
93 struct dri_gem_bo_bucket cache_bucket[INTEL_GEM_BO_BUCKETS];
100 /** Boolean whether the mmap ioctl has been called for this buffer yet. */
106 * Kenel-assigned global name for this object
108 unsigned int global_name;
111 * Index of the buffer within the validation list while preparing a
112 * batchbuffer execution.
117 * Boolean whether we've started swrast
118 * Set when the buffer has been mapped
119 * Cleared when the buffer is unmapped
123 /** Array passed to the DRM containing relocation information. */
124 struct drm_i915_gem_relocation_entry *relocs;
125 /** Array of bos corresponding to relocs[i].target_handle */
126 dri_bo **reloc_target_bo;
127 /** Number of entries in relocs */
129 /** Mapped address for the buffer */
150 static struct dri_gem_bo_bucket *
151 dri_gem_bo_bucket_for_size(dri_bufmgr_gem *bufmgr_gem, unsigned long size)
155 /* We only do buckets in power of two increments */
156 if ((size & (size - 1)) != 0)
159 /* We should only see sizes rounded to pages. */
160 assert((size % 4096) == 0);
162 /* We always allocate in units of pages */
163 i = ffs(size / 4096) - 1;
164 if (i >= INTEL_GEM_BO_BUCKETS)
167 return &bufmgr_gem->cache_bucket[i];
171 static void dri_gem_dump_validation_list(dri_bufmgr_gem *bufmgr_gem)
175 for (i = 0; i < bufmgr_gem->exec_count; i++) {
176 dri_bo *bo = bufmgr_gem->exec_bos[i];
177 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
179 if (bo_gem->relocs == NULL) {
180 DBG("%2d: %d (%s)\n", i, bo_gem->gem_handle, bo_gem->name);
184 for (j = 0; j < bo_gem->reloc_count; j++) {
185 dri_bo *target_bo = bo_gem->reloc_target_bo[j];
186 dri_bo_gem *target_gem = (dri_bo_gem *)target_bo;
188 DBG("%2d: %d (%s)@0x%08llx -> %d (%s)@0x%08lx + 0x%08x\n",
190 bo_gem->gem_handle, bo_gem->name, bo_gem->relocs[j].offset,
191 target_gem->gem_handle, target_gem->name, target_bo->offset,
192 bo_gem->relocs[j].delta);
198 * Adds the given buffer to the list of buffers to be validated (moved into the
199 * appropriate memory type) with the next batch submission.
201 * If a buffer is validated multiple times in a batch submission, it ends up
202 * with the intersection of the memory type flags and the union of the
206 intel_add_validate_buffer(dri_bo *bo)
208 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
209 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
212 if (bo_gem->validate_index != -1)
215 /* Extend the array of validation entries as necessary. */
216 if (bufmgr_gem->exec_count == bufmgr_gem->exec_size) {
217 int new_size = bufmgr_gem->exec_size * 2;
222 bufmgr_gem->exec_objects =
223 realloc(bufmgr_gem->exec_objects,
224 sizeof(*bufmgr_gem->exec_objects) * new_size);
225 bufmgr_gem->exec_bos =
226 realloc(bufmgr_gem->exec_bos,
227 sizeof(*bufmgr_gem->exec_bos) * new_size);
228 bufmgr_gem->exec_size = new_size;
231 index = bufmgr_gem->exec_count;
232 bo_gem->validate_index = index;
233 /* Fill in array entry */
234 bufmgr_gem->exec_objects[index].handle = bo_gem->gem_handle;
235 bufmgr_gem->exec_objects[index].relocation_count = bo_gem->reloc_count;
236 bufmgr_gem->exec_objects[index].relocs_ptr = (uintptr_t)bo_gem->relocs;
237 bufmgr_gem->exec_objects[index].alignment = 0;
238 bufmgr_gem->exec_objects[index].offset = 0;
239 bufmgr_gem->exec_bos[index] = bo;
240 dri_bo_reference(bo);
241 bufmgr_gem->exec_count++;
245 #define RELOC_BUF_SIZE(x) ((I915_RELOC_HEADER + x * I915_RELOC0_STRIDE) * \
249 intel_setup_reloc_list(dri_bo *bo)
251 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
252 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
254 bo_gem->relocs = malloc(bufmgr_gem->max_relocs *
255 sizeof(struct drm_i915_gem_relocation_entry));
256 bo_gem->reloc_target_bo = malloc(bufmgr_gem->max_relocs * sizeof(dri_bo *));
262 dri_gem_bo_alloc(dri_bufmgr *bufmgr, const char *name,
263 unsigned long size, unsigned int alignment)
265 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bufmgr;
267 unsigned int page_size = getpagesize();
269 struct dri_gem_bo_bucket *bucket;
270 int alloc_from_cache = 0;
271 unsigned long bo_size;
273 /* Round the allocated size up to a power of two number of pages. */
274 bo_size = 1 << logbase2(size);
275 if (bo_size < page_size)
277 bucket = dri_gem_bo_bucket_for_size(bufmgr_gem, bo_size);
279 /* If we don't have caching at this size, don't actually round the
282 if (bucket == NULL || bucket->max_entries == 0) {
284 if (bo_size < page_size)
288 /* Get a buffer out of the cache if available */
289 if (bucket != NULL && bucket->num_entries > 0) {
290 struct drm_i915_gem_busy busy;
292 bo_gem = bucket->head;
293 busy.handle = bo_gem->gem_handle;
295 ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_BUSY, &busy);
296 alloc_from_cache = (ret == 0 && busy.busy == 0);
298 if (alloc_from_cache) {
299 bucket->head = bo_gem->next;
300 if (bo_gem->next == NULL)
301 bucket->tail = &bucket->head;
302 bucket->num_entries--;
306 if (!alloc_from_cache) {
307 struct drm_i915_gem_create create;
309 bo_gem = calloc(1, sizeof(*bo_gem));
313 bo_gem->bo.size = bo_size;
314 memset(&create, 0, sizeof(create));
315 create.size = bo_size;
317 ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_CREATE, &create);
318 bo_gem->gem_handle = create.handle;
319 bo_gem->bo.handle = bo_gem->gem_handle;
324 bo_gem->bo.bufmgr = bufmgr;
328 bo_gem->refcount = 1;
329 bo_gem->validate_index = -1;
331 DBG("bo_create: buf %d (%s) %ldb\n",
332 bo_gem->gem_handle, bo_gem->name, size);
338 * Returns a dri_bo wrapping the given buffer object handle.
340 * This can be used when one application needs to pass a buffer object
344 intel_bo_gem_create_from_name(dri_bufmgr *bufmgr, const char *name,
347 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bufmgr;
350 struct drm_gem_open open_arg;
352 bo_gem = calloc(1, sizeof(*bo_gem));
356 memset(&open_arg, 0, sizeof(open_arg));
357 open_arg.name = handle;
358 ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_OPEN, &open_arg);
360 fprintf(stderr, "Couldn't reference %s handle 0x%08x: %s\n",
361 name, handle, strerror(errno));
365 bo_gem->bo.size = open_arg.size;
366 bo_gem->bo.offset = 0;
367 bo_gem->bo.virtual = NULL;
368 bo_gem->bo.bufmgr = bufmgr;
370 bo_gem->refcount = 1;
371 bo_gem->validate_index = -1;
372 bo_gem->gem_handle = open_arg.handle;
373 bo_gem->global_name = handle;
375 DBG("bo_create_from_handle: %d (%s)\n", handle, bo_gem->name);
381 dri_gem_bo_reference(dri_bo *bo)
383 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
389 dri_gem_bo_free(dri_bo *bo)
391 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
392 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
393 struct drm_gem_close close;
397 munmap (bo_gem->virtual, bo_gem->bo.size);
399 /* Close this object */
400 close.handle = bo_gem->gem_handle;
401 ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_CLOSE, &close);
404 "DRM_IOCTL_GEM_CLOSE %d failed (%s): %s\n",
405 bo_gem->gem_handle, bo_gem->name, strerror(errno));
411 dri_gem_bo_unreference(dri_bo *bo)
413 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
414 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
419 if (--bo_gem->refcount == 0) {
420 struct dri_gem_bo_bucket *bucket;
422 if (bo_gem->relocs != NULL) {
425 /* Unreference all the target buffers */
426 for (i = 0; i < bo_gem->reloc_count; i++)
427 dri_bo_unreference(bo_gem->reloc_target_bo[i]);
428 free(bo_gem->reloc_target_bo);
429 free(bo_gem->relocs);
432 DBG("bo_unreference final: %d (%s)\n",
433 bo_gem->gem_handle, bo_gem->name);
435 bucket = dri_gem_bo_bucket_for_size(bufmgr_gem, bo->size);
436 /* Put the buffer into our internal cache for reuse if we can. */
437 if (bucket != NULL &&
438 (bucket->max_entries == -1 ||
439 (bucket->max_entries > 0 &&
440 bucket->num_entries < bucket->max_entries)))
443 bo_gem->validate_index = -1;
444 bo_gem->relocs = NULL;
445 bo_gem->reloc_target_bo = NULL;
446 bo_gem->reloc_count = 0;
449 *bucket->tail = bo_gem;
450 bucket->tail = &bo_gem->next;
451 bucket->num_entries++;
461 dri_gem_bo_map(dri_bo *bo, int write_enable)
463 dri_bufmgr_gem *bufmgr_gem;
464 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
465 struct drm_i915_gem_set_domain set_domain;
468 bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
470 /* Allow recursive mapping. Mesa may recursively map buffers with
471 * nested display loops.
473 if (!bo_gem->mapped) {
475 assert(bo->virtual == NULL);
477 DBG("bo_map: %d (%s)\n", bo_gem->gem_handle, bo_gem->name);
479 if (bo_gem->virtual == NULL) {
480 struct drm_i915_gem_mmap mmap_arg;
482 memset(&mmap_arg, 0, sizeof(mmap_arg));
483 mmap_arg.handle = bo_gem->gem_handle;
485 mmap_arg.size = bo->size;
486 ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_MMAP, &mmap_arg);
488 fprintf(stderr, "%s:%d: Error mapping buffer %d (%s): %s .\n",
490 bo_gem->gem_handle, bo_gem->name, strerror(errno));
492 bo_gem->virtual = (void *)(uintptr_t)mmap_arg.addr_ptr;
494 bo->virtual = bo_gem->virtual;
497 DBG("bo_map: %d (%s) -> %p\n", bo_gem->gem_handle, bo_gem->name, bo_gem->virtual);
500 if (!bo_gem->swrast) {
501 set_domain.handle = bo_gem->gem_handle;
502 set_domain.read_domains = I915_GEM_DOMAIN_CPU;
504 set_domain.write_domain = I915_GEM_DOMAIN_CPU;
506 set_domain.write_domain = 0;
508 ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_SET_DOMAIN,
510 } while (ret == -1 && errno == EINTR);
512 fprintf (stderr, "%s:%d: Error setting swrast %d: %s\n",
513 __FILE__, __LINE__, bo_gem->gem_handle, strerror (errno));
522 dri_gem_bo_unmap(dri_bo *bo)
524 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
525 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
526 struct drm_i915_gem_sw_finish sw_finish;
532 assert(bo_gem->mapped);
534 if (bo_gem->swrast) {
535 sw_finish.handle = bo_gem->gem_handle;
537 ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_SW_FINISH,
539 } while (ret == -1 && errno == EINTR);
546 dri_gem_bo_subdata (dri_bo *bo, unsigned long offset,
547 unsigned long size, const void *data)
549 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
550 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
551 struct drm_i915_gem_pwrite pwrite;
554 memset (&pwrite, 0, sizeof (pwrite));
555 pwrite.handle = bo_gem->gem_handle;
556 pwrite.offset = offset;
558 pwrite.data_ptr = (uint64_t) (uintptr_t) data;
560 ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite);
561 } while (ret == -1 && errno == EINTR);
563 fprintf (stderr, "%s:%d: Error writing data to buffer %d: (%d %d) %s .\n",
565 bo_gem->gem_handle, (int) offset, (int) size,
572 dri_gem_bo_get_subdata (dri_bo *bo, unsigned long offset,
573 unsigned long size, void *data)
575 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
576 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
577 struct drm_i915_gem_pread pread;
580 memset (&pread, 0, sizeof (pread));
581 pread.handle = bo_gem->gem_handle;
582 pread.offset = offset;
584 pread.data_ptr = (uint64_t) (uintptr_t) data;
586 ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_I915_GEM_PREAD, &pread);
587 } while (ret == -1 && errno == EINTR);
589 fprintf (stderr, "%s:%d: Error reading data from buffer %d: (%d %d) %s .\n",
591 bo_gem->gem_handle, (int) offset, (int) size,
598 dri_gem_bo_wait_rendering(dri_bo *bo)
600 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
601 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
602 struct drm_i915_gem_set_domain set_domain;
605 set_domain.handle = bo_gem->gem_handle;
606 set_domain.read_domains = I915_GEM_DOMAIN_GTT;
607 set_domain.write_domain = 0;
608 ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_I915_GEM_SET_DOMAIN, &set_domain);
610 fprintf (stderr, "%s:%d: Error setting memory domains %d (%08x %08x): %s .\n",
612 bo_gem->gem_handle, set_domain.read_domains, set_domain.write_domain,
618 dri_bufmgr_gem_destroy(dri_bufmgr *bufmgr)
620 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bufmgr;
623 free(bufmgr_gem->exec_objects);
624 free(bufmgr_gem->exec_bos);
626 /* Free any cached buffer objects we were going to reuse */
627 for (i = 0; i < INTEL_GEM_BO_BUCKETS; i++) {
628 struct dri_gem_bo_bucket *bucket = &bufmgr_gem->cache_bucket[i];
631 while ((bo_gem = bucket->head) != NULL) {
632 bucket->head = bo_gem->next;
633 if (bo_gem->next == NULL)
634 bucket->tail = &bucket->head;
635 bucket->num_entries--;
637 dri_gem_bo_free(&bo_gem->bo);
645 * Adds the target buffer to the validation list and adds the relocation
646 * to the reloc_buffer's relocation list.
648 * The relocation entry at the given offset must already contain the
649 * precomputed relocation value, because the kernel will optimize out
650 * the relocation entry write when the buffer hasn't moved from the
651 * last known offset in target_bo.
654 dri_gem_bo_emit_reloc(dri_bo *bo, uint32_t read_domains, uint32_t write_domain,
655 uint32_t delta, uint32_t offset, dri_bo *target_bo)
657 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
658 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
659 dri_bo_gem *target_bo_gem = (dri_bo_gem *)target_bo;
661 /* Create a new relocation list if needed */
662 if (bo_gem->relocs == NULL)
663 intel_setup_reloc_list(bo);
666 assert(bo_gem->reloc_count < bufmgr_gem->max_relocs);
669 assert (offset <= bo->size - 4);
670 assert ((write_domain & (write_domain-1)) == 0);
672 bo_gem->relocs[bo_gem->reloc_count].offset = offset;
673 bo_gem->relocs[bo_gem->reloc_count].delta = delta;
674 bo_gem->relocs[bo_gem->reloc_count].target_handle =
675 target_bo_gem->gem_handle;
676 bo_gem->relocs[bo_gem->reloc_count].read_domains = read_domains;
677 bo_gem->relocs[bo_gem->reloc_count].write_domain = write_domain;
678 bo_gem->relocs[bo_gem->reloc_count].presumed_offset = target_bo->offset;
680 bo_gem->reloc_target_bo[bo_gem->reloc_count] = target_bo;
681 dri_bo_reference(target_bo);
683 bo_gem->reloc_count++;
688 * Walk the tree of relocations rooted at BO and accumulate the list of
689 * validations to be performed and update the relocation buffers with
690 * index values into the validation list.
693 dri_gem_bo_process_reloc(dri_bo *bo)
695 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
698 if (bo_gem->relocs == NULL)
701 for (i = 0; i < bo_gem->reloc_count; i++) {
702 dri_bo *target_bo = bo_gem->reloc_target_bo[i];
704 /* Continue walking the tree depth-first. */
705 dri_gem_bo_process_reloc(target_bo);
707 /* Add the target to the validate list */
708 intel_add_validate_buffer(target_bo);
713 intel_update_buffer_offsets (dri_bufmgr_gem *bufmgr_gem)
717 for (i = 0; i < bufmgr_gem->exec_count; i++) {
718 dri_bo *bo = bufmgr_gem->exec_bos[i];
719 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
721 /* Update the buffer offset */
722 if (bufmgr_gem->exec_objects[i].offset != bo->offset) {
723 DBG("BO %d (%s) migrated: 0x%08lx -> 0x%08llx\n",
724 bo_gem->gem_handle, bo_gem->name, bo->offset,
725 bufmgr_gem->exec_objects[i].offset);
726 bo->offset = bufmgr_gem->exec_objects[i].offset;
732 dri_gem_bo_exec(dri_bo *bo, int used,
733 drm_clip_rect_t *cliprects, int num_cliprects,
736 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
737 struct drm_i915_gem_execbuffer execbuf;
740 /* Update indices and set up the validate list. */
741 dri_gem_bo_process_reloc(bo);
743 /* Add the batch buffer to the validation list. There are no relocations
746 intel_add_validate_buffer(bo);
748 execbuf.buffers_ptr = (uintptr_t)bufmgr_gem->exec_objects;
749 execbuf.buffer_count = bufmgr_gem->exec_count;
750 execbuf.batch_start_offset = 0;
751 execbuf.batch_len = used;
752 execbuf.cliprects_ptr = (uintptr_t)cliprects;
753 execbuf.num_cliprects = num_cliprects;
758 ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_EXECBUFFER, &execbuf);
759 } while (ret == -EAGAIN);
761 intel_update_buffer_offsets (bufmgr_gem);
763 if (bufmgr_gem->bufmgr.debug)
764 dri_gem_dump_validation_list(bufmgr_gem);
766 for (i = 0; i < bufmgr_gem->exec_count; i++) {
767 dri_bo *bo = bufmgr_gem->exec_bos[i];
768 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
770 /* Need to call swrast on next bo_map */
773 /* Disconnect the buffer from the validate list */
774 bo_gem->validate_index = -1;
775 dri_bo_unreference(bo);
776 bufmgr_gem->exec_bos[i] = NULL;
778 bufmgr_gem->exec_count = 0;
784 dri_gem_bo_pin(dri_bo *bo, uint32_t alignment)
786 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
787 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
788 struct drm_i915_gem_pin pin;
791 pin.handle = bo_gem->gem_handle;
792 pin.alignment = alignment;
794 ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_PIN, &pin);
798 bo->offset = pin.offset;
803 dri_gem_bo_unpin(dri_bo *bo)
805 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
806 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
807 struct drm_i915_gem_unpin unpin;
810 unpin.handle = bo_gem->gem_handle;
812 ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_UNPIN, &unpin);
820 dri_gem_bo_set_tiling(dri_bo *bo, uint32_t *tiling_mode)
822 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
823 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
824 struct drm_i915_gem_set_tiling set_tiling;
827 set_tiling.handle = bo_gem->gem_handle;
828 set_tiling.tiling_mode = *tiling_mode;
830 ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling);
832 *tiling_mode = I915_TILING_NONE;
836 *tiling_mode = set_tiling.tiling_mode;
841 dri_gem_bo_flink(dri_bo *bo, uint32_t *name)
843 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
844 dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
845 struct drm_gem_flink flink;
848 if (!bo_gem->global_name) {
849 flink.handle = bo_gem->gem_handle;
851 ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_FLINK, &flink);
854 bo_gem->global_name = flink.name;
857 *name = bo_gem->global_name;
862 * Enables unlimited caching of buffer objects for reuse.
864 * This is potentially very memory expensive, as the cache at each bucket
865 * size is only bounded by how many buffers of that size we've managed to have
869 intel_bufmgr_gem_enable_reuse(dri_bufmgr *bufmgr)
871 dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bufmgr;
874 for (i = 0; i < INTEL_GEM_BO_BUCKETS; i++) {
875 bufmgr_gem->cache_bucket[i].max_entries = -1;
883 dri_gem_check_aperture_space(dri_bo **bo_array, int count)
889 * Initializes the GEM buffer manager, which uses the kernel to allocate, map,
890 * and manage map buffer objections.
892 * \param fd File descriptor of the opened DRM device.
895 intel_bufmgr_gem_init(int fd, int batch_size)
897 dri_bufmgr_gem *bufmgr_gem;
900 bufmgr_gem = calloc(1, sizeof(*bufmgr_gem));
903 /* Let's go with one relocation per every 2 dwords (but round down a bit
904 * since a power of two will mean an extra page allocation for the reloc
907 * Every 4 was too few for the blender benchmark.
909 bufmgr_gem->max_relocs = batch_size / sizeof(uint32_t) / 2 - 2;
911 bufmgr_gem->bufmgr.bo_alloc = dri_gem_bo_alloc;
912 bufmgr_gem->bufmgr.bo_reference = dri_gem_bo_reference;
913 bufmgr_gem->bufmgr.bo_unreference = dri_gem_bo_unreference;
914 bufmgr_gem->bufmgr.bo_map = dri_gem_bo_map;
915 bufmgr_gem->bufmgr.bo_unmap = dri_gem_bo_unmap;
916 bufmgr_gem->bufmgr.bo_subdata = dri_gem_bo_subdata;
917 bufmgr_gem->bufmgr.bo_get_subdata = dri_gem_bo_get_subdata;
918 bufmgr_gem->bufmgr.bo_wait_rendering = dri_gem_bo_wait_rendering;
919 bufmgr_gem->bufmgr.bo_emit_reloc = dri_gem_bo_emit_reloc;
920 bufmgr_gem->bufmgr.bo_pin = dri_gem_bo_pin;
921 bufmgr_gem->bufmgr.bo_unpin = dri_gem_bo_unpin;
922 bufmgr_gem->bufmgr.bo_set_tiling = dri_gem_bo_set_tiling;
923 bufmgr_gem->bufmgr.bo_flink = dri_gem_bo_flink;
924 bufmgr_gem->bufmgr.bo_exec = dri_gem_bo_exec;
925 bufmgr_gem->bufmgr.destroy = dri_bufmgr_gem_destroy;
926 bufmgr_gem->bufmgr.debug = 0;
927 bufmgr_gem->bufmgr.check_aperture_space = dri_gem_check_aperture_space;
928 /* Initialize the linked lists for BO reuse cache. */
929 for (i = 0; i < INTEL_GEM_BO_BUCKETS; i++)
930 bufmgr_gem->cache_bucket[i].tail = &bufmgr_gem->cache_bucket[i].head;
932 return &bufmgr_gem->bufmgr;