2 * Copyright 2008 Jerome Glisse.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
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 NONINFRINGEMENT. IN NO EVENT SHALL
19 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
25 * Jerome Glisse <glisse@freedesktop.org>
27 #include <linux/list_sort.h>
29 #include <drm/radeon_drm.h>
30 #include "radeon_reg.h"
32 #include "radeon_trace.h"
34 #define RADEON_CS_MAX_PRIORITY 32u
35 #define RADEON_CS_NUM_BUCKETS (RADEON_CS_MAX_PRIORITY + 1)
37 /* This is based on the bucket sort with O(n) time complexity.
38 * An item with priority "i" is added to bucket[i]. The lists are then
39 * concatenated in descending order.
41 struct radeon_cs_buckets {
42 struct list_head bucket[RADEON_CS_NUM_BUCKETS];
45 static void radeon_cs_buckets_init(struct radeon_cs_buckets *b)
49 for (i = 0; i < RADEON_CS_NUM_BUCKETS; i++)
50 INIT_LIST_HEAD(&b->bucket[i]);
53 static void radeon_cs_buckets_add(struct radeon_cs_buckets *b,
54 struct list_head *item, unsigned priority)
56 /* Since buffers which appear sooner in the relocation list are
57 * likely to be used more often than buffers which appear later
58 * in the list, the sort mustn't change the ordering of buffers
59 * with the same priority, i.e. it must be stable.
61 list_add_tail(item, &b->bucket[min(priority, RADEON_CS_MAX_PRIORITY)]);
64 static void radeon_cs_buckets_get_list(struct radeon_cs_buckets *b,
65 struct list_head *out_list)
69 /* Connect the sorted buckets in the output list. */
70 for (i = 0; i < RADEON_CS_NUM_BUCKETS; i++) {
71 list_splice(&b->bucket[i], out_list);
75 static int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
77 struct drm_device *ddev = p->rdev->ddev;
78 struct radeon_cs_chunk *chunk;
79 struct radeon_cs_buckets buckets;
81 bool need_mmap_lock = false;
84 if (p->chunk_relocs == NULL) {
87 chunk = p->chunk_relocs;
89 /* FIXME: we assume that each relocs use 4 dwords */
90 p->nrelocs = chunk->length_dw / 4;
91 p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_bo_list), GFP_KERNEL);
92 if (p->relocs == NULL) {
96 radeon_cs_buckets_init(&buckets);
98 for (i = 0; i < p->nrelocs; i++) {
99 struct drm_radeon_cs_reloc *r;
100 struct drm_gem_object *gobj;
103 r = (struct drm_radeon_cs_reloc *)&chunk->kdata[i*4];
104 gobj = drm_gem_object_lookup(ddev, p->filp, r->handle);
106 DRM_ERROR("gem object lookup failed 0x%x\n",
110 p->relocs[i].robj = gem_to_radeon_bo(gobj);
112 /* The userspace buffer priorities are from 0 to 15. A higher
113 * number means the buffer is more important.
114 * Also, the buffers used for write have a higher priority than
115 * the buffers used for read only, which doubles the range
116 * to 0 to 31. 32 is reserved for the kernel driver.
118 priority = (r->flags & RADEON_RELOC_PRIO_MASK) * 2
121 /* the first reloc of an UVD job is the msg and that must be in
122 VRAM, also but everything into VRAM on AGP cards and older
123 IGP chips to avoid image corruptions */
124 if (p->ring == R600_RING_TYPE_UVD_INDEX &&
125 (i == 0 || drm_pci_device_is_agp(p->rdev->ddev) ||
126 p->rdev->family == CHIP_RS780 ||
127 p->rdev->family == CHIP_RS880)) {
129 /* TODO: is this still needed for NI+ ? */
130 p->relocs[i].prefered_domains =
131 RADEON_GEM_DOMAIN_VRAM;
133 p->relocs[i].allowed_domains =
134 RADEON_GEM_DOMAIN_VRAM;
136 /* prioritize this over any other relocation */
137 priority = RADEON_CS_MAX_PRIORITY;
139 uint32_t domain = r->write_domain ?
140 r->write_domain : r->read_domains;
142 if (domain & RADEON_GEM_DOMAIN_CPU) {
143 DRM_ERROR("RADEON_GEM_DOMAIN_CPU is not valid "
144 "for command submission\n");
148 p->relocs[i].prefered_domains = domain;
149 if (domain == RADEON_GEM_DOMAIN_VRAM)
150 domain |= RADEON_GEM_DOMAIN_GTT;
151 p->relocs[i].allowed_domains = domain;
154 if (radeon_ttm_tt_has_userptr(p->relocs[i].robj->tbo.ttm)) {
155 uint32_t domain = p->relocs[i].prefered_domains;
156 if (!(domain & RADEON_GEM_DOMAIN_GTT)) {
157 DRM_ERROR("Only RADEON_GEM_DOMAIN_GTT is "
158 "allowed for userptr BOs\n");
161 need_mmap_lock = true;
162 domain = RADEON_GEM_DOMAIN_GTT;
163 p->relocs[i].prefered_domains = domain;
164 p->relocs[i].allowed_domains = domain;
167 p->relocs[i].tv.bo = &p->relocs[i].robj->tbo;
168 p->relocs[i].tv.shared = !r->write_domain;
170 radeon_cs_buckets_add(&buckets, &p->relocs[i].tv.head,
174 radeon_cs_buckets_get_list(&buckets, &p->validated);
176 if (p->cs_flags & RADEON_CS_USE_VM)
177 p->vm_bos = radeon_vm_get_bos(p->rdev, p->ib.vm,
180 down_read(¤t->mm->mmap_sem);
182 r = radeon_bo_list_validate(p->rdev, &p->ticket, &p->validated, p->ring);
185 up_read(¤t->mm->mmap_sem);
190 static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority)
192 p->priority = priority;
196 DRM_ERROR("unknown ring id: %d\n", ring);
198 case RADEON_CS_RING_GFX:
199 p->ring = RADEON_RING_TYPE_GFX_INDEX;
201 case RADEON_CS_RING_COMPUTE:
202 if (p->rdev->family >= CHIP_TAHITI) {
204 p->ring = CAYMAN_RING_TYPE_CP1_INDEX;
206 p->ring = CAYMAN_RING_TYPE_CP2_INDEX;
208 p->ring = RADEON_RING_TYPE_GFX_INDEX;
210 case RADEON_CS_RING_DMA:
211 if (p->rdev->family >= CHIP_CAYMAN) {
213 p->ring = R600_RING_TYPE_DMA_INDEX;
215 p->ring = CAYMAN_RING_TYPE_DMA1_INDEX;
216 } else if (p->rdev->family >= CHIP_RV770) {
217 p->ring = R600_RING_TYPE_DMA_INDEX;
222 case RADEON_CS_RING_UVD:
223 p->ring = R600_RING_TYPE_UVD_INDEX;
225 case RADEON_CS_RING_VCE:
226 /* TODO: only use the low priority ring for now */
227 p->ring = TN_RING_TYPE_VCE1_INDEX;
233 static int radeon_cs_sync_rings(struct radeon_cs_parser *p)
235 struct radeon_bo_list *reloc;
238 list_for_each_entry(reloc, &p->validated, tv.head) {
239 struct reservation_object *resv;
241 resv = reloc->robj->tbo.resv;
242 r = radeon_sync_resv(p->rdev, &p->ib.sync, resv,
250 /* XXX: note that this is called from the legacy UMS CS ioctl as well */
251 int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
253 struct drm_radeon_cs *cs = data;
254 uint64_t *chunk_array_ptr;
256 u32 ring = RADEON_CS_RING_GFX;
259 INIT_LIST_HEAD(&p->validated);
261 if (!cs->num_chunks) {
268 p->const_ib.sa_bo = NULL;
270 p->chunk_relocs = NULL;
271 p->chunk_flags = NULL;
272 p->chunk_const_ib = NULL;
273 p->chunks_array = kcalloc(cs->num_chunks, sizeof(uint64_t), GFP_KERNEL);
274 if (p->chunks_array == NULL) {
277 chunk_array_ptr = (uint64_t *)(unsigned long)(cs->chunks);
278 if (copy_from_user(p->chunks_array, chunk_array_ptr,
279 sizeof(uint64_t)*cs->num_chunks)) {
283 p->nchunks = cs->num_chunks;
284 p->chunks = kcalloc(p->nchunks, sizeof(struct radeon_cs_chunk), GFP_KERNEL);
285 if (p->chunks == NULL) {
288 for (i = 0; i < p->nchunks; i++) {
289 struct drm_radeon_cs_chunk __user **chunk_ptr = NULL;
290 struct drm_radeon_cs_chunk user_chunk;
291 uint32_t __user *cdata;
293 chunk_ptr = (void __user*)(unsigned long)p->chunks_array[i];
294 if (copy_from_user(&user_chunk, chunk_ptr,
295 sizeof(struct drm_radeon_cs_chunk))) {
298 p->chunks[i].length_dw = user_chunk.length_dw;
299 if (user_chunk.chunk_id == RADEON_CHUNK_ID_RELOCS) {
300 p->chunk_relocs = &p->chunks[i];
302 if (user_chunk.chunk_id == RADEON_CHUNK_ID_IB) {
303 p->chunk_ib = &p->chunks[i];
304 /* zero length IB isn't useful */
305 if (p->chunks[i].length_dw == 0)
308 if (user_chunk.chunk_id == RADEON_CHUNK_ID_CONST_IB) {
309 p->chunk_const_ib = &p->chunks[i];
310 /* zero length CONST IB isn't useful */
311 if (p->chunks[i].length_dw == 0)
314 if (user_chunk.chunk_id == RADEON_CHUNK_ID_FLAGS) {
315 p->chunk_flags = &p->chunks[i];
316 /* zero length flags aren't useful */
317 if (p->chunks[i].length_dw == 0)
321 size = p->chunks[i].length_dw;
322 cdata = (void __user *)(unsigned long)user_chunk.chunk_data;
323 p->chunks[i].user_ptr = cdata;
324 if (user_chunk.chunk_id == RADEON_CHUNK_ID_CONST_IB)
327 if (user_chunk.chunk_id == RADEON_CHUNK_ID_IB) {
328 if (!p->rdev || !(p->rdev->flags & RADEON_IS_AGP))
332 p->chunks[i].kdata = drm_malloc_ab(size, sizeof(uint32_t));
333 size *= sizeof(uint32_t);
334 if (p->chunks[i].kdata == NULL) {
337 if (copy_from_user(p->chunks[i].kdata, cdata, size)) {
340 if (user_chunk.chunk_id == RADEON_CHUNK_ID_FLAGS) {
341 p->cs_flags = p->chunks[i].kdata[0];
342 if (p->chunks[i].length_dw > 1)
343 ring = p->chunks[i].kdata[1];
344 if (p->chunks[i].length_dw > 2)
345 priority = (s32)p->chunks[i].kdata[2];
349 /* these are KMS only */
351 if ((p->cs_flags & RADEON_CS_USE_VM) &&
352 !p->rdev->vm_manager.enabled) {
353 DRM_ERROR("VM not active on asic!\n");
357 if (radeon_cs_get_ring(p, ring, priority))
360 /* we only support VM on some SI+ rings */
361 if ((p->cs_flags & RADEON_CS_USE_VM) == 0) {
362 if (p->rdev->asic->ring[p->ring]->cs_parse == NULL) {
363 DRM_ERROR("Ring %d requires VM!\n", p->ring);
367 if (p->rdev->asic->ring[p->ring]->ib_parse == NULL) {
368 DRM_ERROR("VM not supported on ring %d!\n",
378 static int cmp_size_smaller_first(void *priv, struct list_head *a,
381 struct radeon_bo_list *la = list_entry(a, struct radeon_bo_list, tv.head);
382 struct radeon_bo_list *lb = list_entry(b, struct radeon_bo_list, tv.head);
384 /* Sort A before B if A is smaller. */
385 return (int)la->robj->tbo.num_pages - (int)lb->robj->tbo.num_pages;
389 * cs_parser_fini() - clean parser states
390 * @parser: parser structure holding parsing context.
391 * @error: error number
393 * If error is set than unvalidate buffer, otherwise just free memory
394 * used by parsing context.
396 static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error, bool backoff)
401 /* Sort the buffer list from the smallest to largest buffer,
402 * which affects the order of buffers in the LRU list.
403 * This assures that the smallest buffers are added first
404 * to the LRU list, so they are likely to be later evicted
405 * first, instead of large buffers whose eviction is more
408 * This slightly lowers the number of bytes moved by TTM
409 * per frame under memory pressure.
411 list_sort(NULL, &parser->validated, cmp_size_smaller_first);
413 ttm_eu_fence_buffer_objects(&parser->ticket,
415 &parser->ib.fence->base);
416 } else if (backoff) {
417 ttm_eu_backoff_reservation(&parser->ticket,
421 if (parser->relocs != NULL) {
422 for (i = 0; i < parser->nrelocs; i++) {
423 struct radeon_bo *bo = parser->relocs[i].robj;
427 drm_gem_object_unreference_unlocked(&bo->gem_base);
430 kfree(parser->track);
431 kfree(parser->relocs);
432 drm_free_large(parser->vm_bos);
433 for (i = 0; i < parser->nchunks; i++)
434 drm_free_large(parser->chunks[i].kdata);
435 kfree(parser->chunks);
436 kfree(parser->chunks_array);
437 radeon_ib_free(parser->rdev, &parser->ib);
438 radeon_ib_free(parser->rdev, &parser->const_ib);
441 static int radeon_cs_ib_chunk(struct radeon_device *rdev,
442 struct radeon_cs_parser *parser)
446 if (parser->chunk_ib == NULL)
449 if (parser->cs_flags & RADEON_CS_USE_VM)
452 r = radeon_cs_parse(rdev, parser->ring, parser);
453 if (r || parser->parser_error) {
454 DRM_ERROR("Invalid command stream !\n");
458 r = radeon_cs_sync_rings(parser);
460 if (r != -ERESTARTSYS)
461 DRM_ERROR("Failed to sync rings: %i\n", r);
465 if (parser->ring == R600_RING_TYPE_UVD_INDEX)
466 radeon_uvd_note_usage(rdev);
467 else if ((parser->ring == TN_RING_TYPE_VCE1_INDEX) ||
468 (parser->ring == TN_RING_TYPE_VCE2_INDEX))
469 radeon_vce_note_usage(rdev);
471 r = radeon_ib_schedule(rdev, &parser->ib, NULL, true);
473 DRM_ERROR("Failed to schedule IB !\n");
478 static int radeon_bo_vm_update_pte(struct radeon_cs_parser *p,
479 struct radeon_vm *vm)
481 struct radeon_device *rdev = p->rdev;
482 struct radeon_bo_va *bo_va;
485 r = radeon_vm_update_page_directory(rdev, vm);
489 r = radeon_vm_clear_freed(rdev, vm);
493 if (vm->ib_bo_va == NULL) {
494 DRM_ERROR("Tmp BO not in VM!\n");
498 r = radeon_vm_bo_update(rdev, vm->ib_bo_va,
499 &rdev->ring_tmp_bo.bo->tbo.mem);
503 for (i = 0; i < p->nrelocs; i++) {
504 struct radeon_bo *bo;
506 bo = p->relocs[i].robj;
507 bo_va = radeon_vm_bo_find(vm, bo);
509 dev_err(rdev->dev, "bo %p not in vm %p\n", bo, vm);
513 r = radeon_vm_bo_update(rdev, bo_va, &bo->tbo.mem);
517 radeon_sync_fence(&p->ib.sync, bo_va->last_pt_update);
520 return radeon_vm_clear_invalids(rdev, vm);
523 static int radeon_cs_ib_vm_chunk(struct radeon_device *rdev,
524 struct radeon_cs_parser *parser)
526 struct radeon_fpriv *fpriv = parser->filp->driver_priv;
527 struct radeon_vm *vm = &fpriv->vm;
530 if (parser->chunk_ib == NULL)
532 if ((parser->cs_flags & RADEON_CS_USE_VM) == 0)
535 if (parser->const_ib.length_dw) {
536 r = radeon_ring_ib_parse(rdev, parser->ring, &parser->const_ib);
542 r = radeon_ring_ib_parse(rdev, parser->ring, &parser->ib);
547 if (parser->ring == R600_RING_TYPE_UVD_INDEX)
548 radeon_uvd_note_usage(rdev);
550 mutex_lock(&vm->mutex);
551 r = radeon_bo_vm_update_pte(parser, vm);
556 r = radeon_cs_sync_rings(parser);
558 if (r != -ERESTARTSYS)
559 DRM_ERROR("Failed to sync rings: %i\n", r);
563 if ((rdev->family >= CHIP_TAHITI) &&
564 (parser->chunk_const_ib != NULL)) {
565 r = radeon_ib_schedule(rdev, &parser->ib, &parser->const_ib, true);
567 r = radeon_ib_schedule(rdev, &parser->ib, NULL, true);
571 mutex_unlock(&vm->mutex);
575 static int radeon_cs_handle_lockup(struct radeon_device *rdev, int r)
578 r = radeon_gpu_reset(rdev);
585 static int radeon_cs_ib_fill(struct radeon_device *rdev, struct radeon_cs_parser *parser)
587 struct radeon_cs_chunk *ib_chunk;
588 struct radeon_vm *vm = NULL;
591 if (parser->chunk_ib == NULL)
594 if (parser->cs_flags & RADEON_CS_USE_VM) {
595 struct radeon_fpriv *fpriv = parser->filp->driver_priv;
598 if ((rdev->family >= CHIP_TAHITI) &&
599 (parser->chunk_const_ib != NULL)) {
600 ib_chunk = parser->chunk_const_ib;
601 if (ib_chunk->length_dw > RADEON_IB_VM_MAX_SIZE) {
602 DRM_ERROR("cs IB CONST too big: %d\n", ib_chunk->length_dw);
605 r = radeon_ib_get(rdev, parser->ring, &parser->const_ib,
606 vm, ib_chunk->length_dw * 4);
608 DRM_ERROR("Failed to get const ib !\n");
611 parser->const_ib.is_const_ib = true;
612 parser->const_ib.length_dw = ib_chunk->length_dw;
613 if (copy_from_user(parser->const_ib.ptr,
615 ib_chunk->length_dw * 4))
619 ib_chunk = parser->chunk_ib;
620 if (ib_chunk->length_dw > RADEON_IB_VM_MAX_SIZE) {
621 DRM_ERROR("cs IB too big: %d\n", ib_chunk->length_dw);
625 ib_chunk = parser->chunk_ib;
627 r = radeon_ib_get(rdev, parser->ring, &parser->ib,
628 vm, ib_chunk->length_dw * 4);
630 DRM_ERROR("Failed to get ib !\n");
633 parser->ib.length_dw = ib_chunk->length_dw;
635 memcpy(parser->ib.ptr, ib_chunk->kdata, ib_chunk->length_dw * 4);
636 else if (copy_from_user(parser->ib.ptr, ib_chunk->user_ptr, ib_chunk->length_dw * 4))
641 int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
643 struct radeon_device *rdev = dev->dev_private;
644 struct radeon_cs_parser parser;
647 down_read(&rdev->exclusive_lock);
648 if (!rdev->accel_working) {
649 up_read(&rdev->exclusive_lock);
652 if (rdev->in_reset) {
653 up_read(&rdev->exclusive_lock);
654 r = radeon_gpu_reset(rdev);
659 /* initialize parser */
660 memset(&parser, 0, sizeof(struct radeon_cs_parser));
663 parser.dev = rdev->dev;
664 parser.family = rdev->family;
665 r = radeon_cs_parser_init(&parser, data);
667 DRM_ERROR("Failed to initialize parser !\n");
668 radeon_cs_parser_fini(&parser, r, false);
669 up_read(&rdev->exclusive_lock);
670 r = radeon_cs_handle_lockup(rdev, r);
674 r = radeon_cs_ib_fill(rdev, &parser);
676 r = radeon_cs_parser_relocs(&parser);
677 if (r && r != -ERESTARTSYS)
678 DRM_ERROR("Failed to parse relocation %d!\n", r);
682 radeon_cs_parser_fini(&parser, r, false);
683 up_read(&rdev->exclusive_lock);
684 r = radeon_cs_handle_lockup(rdev, r);
688 trace_radeon_cs(&parser);
690 r = radeon_cs_ib_chunk(rdev, &parser);
694 r = radeon_cs_ib_vm_chunk(rdev, &parser);
699 radeon_cs_parser_fini(&parser, r, true);
700 up_read(&rdev->exclusive_lock);
701 r = radeon_cs_handle_lockup(rdev, r);
706 * radeon_cs_packet_parse() - parse cp packet and point ib index to next packet
707 * @parser: parser structure holding parsing context.
708 * @pkt: where to store packet information
710 * Assume that chunk_ib_index is properly set. Will return -EINVAL
711 * if packet is bigger than remaining ib size. or if packets is unknown.
713 int radeon_cs_packet_parse(struct radeon_cs_parser *p,
714 struct radeon_cs_packet *pkt,
717 struct radeon_cs_chunk *ib_chunk = p->chunk_ib;
718 struct radeon_device *rdev = p->rdev;
722 if (idx >= ib_chunk->length_dw) {
723 DRM_ERROR("Can not parse packet at %d after CS end %d !\n",
724 idx, ib_chunk->length_dw);
727 header = radeon_get_ib_value(p, idx);
729 pkt->type = RADEON_CP_PACKET_GET_TYPE(header);
730 pkt->count = RADEON_CP_PACKET_GET_COUNT(header);
733 case RADEON_PACKET_TYPE0:
734 if (rdev->family < CHIP_R600) {
735 pkt->reg = R100_CP_PACKET0_GET_REG(header);
737 RADEON_CP_PACKET0_GET_ONE_REG_WR(header);
739 pkt->reg = R600_CP_PACKET0_GET_REG(header);
741 case RADEON_PACKET_TYPE3:
742 pkt->opcode = RADEON_CP_PACKET3_GET_OPCODE(header);
744 case RADEON_PACKET_TYPE2:
748 DRM_ERROR("Unknown packet type %d at %d !\n", pkt->type, idx);
752 if ((pkt->count + 1 + pkt->idx) >= ib_chunk->length_dw) {
753 DRM_ERROR("Packet (%d:%d:%d) end after CS buffer (%d) !\n",
754 pkt->idx, pkt->type, pkt->count, ib_chunk->length_dw);
761 for (i = 0; i < ib_chunk->length_dw; i++) {
763 printk("\t0x%08x <---\n", radeon_get_ib_value(p, i));
765 printk("\t0x%08x\n", radeon_get_ib_value(p, i));
771 * radeon_cs_packet_next_is_pkt3_nop() - test if the next packet is P3 NOP
772 * @p: structure holding the parser context.
774 * Check if the next packet is NOP relocation packet3.
776 bool radeon_cs_packet_next_is_pkt3_nop(struct radeon_cs_parser *p)
778 struct radeon_cs_packet p3reloc;
781 r = radeon_cs_packet_parse(p, &p3reloc, p->idx);
784 if (p3reloc.type != RADEON_PACKET_TYPE3)
786 if (p3reloc.opcode != RADEON_PACKET3_NOP)
792 * radeon_cs_dump_packet() - dump raw packet context
793 * @p: structure holding the parser context.
794 * @pkt: structure holding the packet.
796 * Used mostly for debugging and error reporting.
798 void radeon_cs_dump_packet(struct radeon_cs_parser *p,
799 struct radeon_cs_packet *pkt)
801 volatile uint32_t *ib;
807 for (i = 0; i <= (pkt->count + 1); i++, idx++)
808 DRM_INFO("ib[%d]=0x%08X\n", idx, ib[idx]);
812 * radeon_cs_packet_next_reloc() - parse next (should be reloc) packet
813 * @parser: parser structure holding parsing context.
814 * @data: pointer to relocation data
815 * @offset_start: starting offset
816 * @offset_mask: offset mask (to align start offset on)
817 * @reloc: reloc informations
819 * Check if next packet is relocation packet3, do bo validation and compute
820 * GPU offset using the provided start.
822 int radeon_cs_packet_next_reloc(struct radeon_cs_parser *p,
823 struct radeon_bo_list **cs_reloc,
826 struct radeon_cs_chunk *relocs_chunk;
827 struct radeon_cs_packet p3reloc;
831 if (p->chunk_relocs == NULL) {
832 DRM_ERROR("No relocation chunk !\n");
836 relocs_chunk = p->chunk_relocs;
837 r = radeon_cs_packet_parse(p, &p3reloc, p->idx);
840 p->idx += p3reloc.count + 2;
841 if (p3reloc.type != RADEON_PACKET_TYPE3 ||
842 p3reloc.opcode != RADEON_PACKET3_NOP) {
843 DRM_ERROR("No packet3 for relocation for packet at %d.\n",
845 radeon_cs_dump_packet(p, &p3reloc);
848 idx = radeon_get_ib_value(p, p3reloc.idx + 1);
849 if (idx >= relocs_chunk->length_dw) {
850 DRM_ERROR("Relocs at %d after relocations chunk end %d !\n",
851 idx, relocs_chunk->length_dw);
852 radeon_cs_dump_packet(p, &p3reloc);
855 /* FIXME: we assume reloc size is 4 dwords */
857 *cs_reloc = p->relocs;
858 (*cs_reloc)->gpu_offset =
859 (u64)relocs_chunk->kdata[idx + 3] << 32;
860 (*cs_reloc)->gpu_offset |= relocs_chunk->kdata[idx + 0];
862 *cs_reloc = &p->relocs[(idx / 4)];