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>
28 #include <drm/radeon_drm.h>
29 #include "radeon_reg.h"
32 static int radeon_cs_parser_relocs(struct radeon_cs_parser *p)
34 struct drm_device *ddev = p->rdev->ddev;
35 struct radeon_cs_chunk *chunk;
39 if (p->chunk_relocs_idx == -1) {
42 chunk = &p->chunks[p->chunk_relocs_idx];
44 /* FIXME: we assume that each relocs use 4 dwords */
45 p->nrelocs = chunk->length_dw / 4;
46 p->relocs_ptr = kcalloc(p->nrelocs, sizeof(void *), GFP_KERNEL);
47 if (p->relocs_ptr == NULL) {
50 p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_cs_reloc), GFP_KERNEL);
51 if (p->relocs == NULL) {
54 for (i = 0; i < p->nrelocs; i++) {
55 struct drm_radeon_cs_reloc *r;
58 r = (struct drm_radeon_cs_reloc *)&chunk->kdata[i*4];
59 for (j = 0; j < i; j++) {
60 if (r->handle == p->relocs[j].handle) {
61 p->relocs_ptr[i] = &p->relocs[j];
67 p->relocs[i].handle = 0;
71 p->relocs[i].gobj = drm_gem_object_lookup(ddev, p->filp,
73 if (p->relocs[i].gobj == NULL) {
74 DRM_ERROR("gem object lookup failed 0x%x\n",
78 p->relocs_ptr[i] = &p->relocs[i];
79 p->relocs[i].robj = gem_to_radeon_bo(p->relocs[i].gobj);
80 p->relocs[i].lobj.bo = p->relocs[i].robj;
81 p->relocs[i].lobj.written = !!r->write_domain;
83 /* the first reloc of an UVD job is the
84 msg and that must be in VRAM */
85 if (p->ring == R600_RING_TYPE_UVD_INDEX && i == 0) {
86 /* TODO: is this still needed for NI+ ? */
87 p->relocs[i].lobj.domain =
88 RADEON_GEM_DOMAIN_VRAM;
90 p->relocs[i].lobj.alt_domain =
91 RADEON_GEM_DOMAIN_VRAM;
94 uint32_t domain = r->write_domain ?
95 r->write_domain : r->read_domains;
97 p->relocs[i].lobj.domain = domain;
98 if (domain == RADEON_GEM_DOMAIN_VRAM)
99 domain |= RADEON_GEM_DOMAIN_GTT;
100 p->relocs[i].lobj.alt_domain = domain;
103 p->relocs[i].lobj.tv.bo = &p->relocs[i].robj->tbo;
104 p->relocs[i].handle = r->handle;
106 radeon_bo_list_add_object(&p->relocs[i].lobj,
109 return radeon_bo_list_validate(&p->ticket, &p->validated, p->ring);
112 static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority)
114 p->priority = priority;
118 DRM_ERROR("unknown ring id: %d\n", ring);
120 case RADEON_CS_RING_GFX:
121 p->ring = RADEON_RING_TYPE_GFX_INDEX;
123 case RADEON_CS_RING_COMPUTE:
124 if (p->rdev->family >= CHIP_TAHITI) {
126 p->ring = CAYMAN_RING_TYPE_CP1_INDEX;
128 p->ring = CAYMAN_RING_TYPE_CP2_INDEX;
130 p->ring = RADEON_RING_TYPE_GFX_INDEX;
132 case RADEON_CS_RING_DMA:
133 if (p->rdev->family >= CHIP_CAYMAN) {
135 p->ring = R600_RING_TYPE_DMA_INDEX;
137 p->ring = CAYMAN_RING_TYPE_DMA1_INDEX;
138 } else if (p->rdev->family >= CHIP_R600) {
139 p->ring = R600_RING_TYPE_DMA_INDEX;
144 case RADEON_CS_RING_UVD:
145 p->ring = R600_RING_TYPE_UVD_INDEX;
151 static void radeon_cs_sync_rings(struct radeon_cs_parser *p)
155 for (i = 0; i < p->nrelocs; i++) {
156 if (!p->relocs[i].robj)
159 radeon_ib_sync_to(&p->ib, p->relocs[i].robj->tbo.sync_obj);
163 /* XXX: note that this is called from the legacy UMS CS ioctl as well */
164 int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
166 struct drm_radeon_cs *cs = data;
167 uint64_t *chunk_array_ptr;
169 u32 ring = RADEON_CS_RING_GFX;
172 if (!cs->num_chunks) {
176 INIT_LIST_HEAD(&p->validated);
179 p->ib.semaphore = NULL;
180 p->const_ib.sa_bo = NULL;
181 p->const_ib.semaphore = NULL;
182 p->chunk_ib_idx = -1;
183 p->chunk_relocs_idx = -1;
184 p->chunk_flags_idx = -1;
185 p->chunk_const_ib_idx = -1;
186 p->chunks_array = kcalloc(cs->num_chunks, sizeof(uint64_t), GFP_KERNEL);
187 if (p->chunks_array == NULL) {
190 chunk_array_ptr = (uint64_t *)(unsigned long)(cs->chunks);
191 if (DRM_COPY_FROM_USER(p->chunks_array, chunk_array_ptr,
192 sizeof(uint64_t)*cs->num_chunks)) {
196 p->nchunks = cs->num_chunks;
197 p->chunks = kcalloc(p->nchunks, sizeof(struct radeon_cs_chunk), GFP_KERNEL);
198 if (p->chunks == NULL) {
201 for (i = 0; i < p->nchunks; i++) {
202 struct drm_radeon_cs_chunk __user **chunk_ptr = NULL;
203 struct drm_radeon_cs_chunk user_chunk;
204 uint32_t __user *cdata;
206 chunk_ptr = (void __user*)(unsigned long)p->chunks_array[i];
207 if (DRM_COPY_FROM_USER(&user_chunk, chunk_ptr,
208 sizeof(struct drm_radeon_cs_chunk))) {
211 p->chunks[i].length_dw = user_chunk.length_dw;
212 p->chunks[i].kdata = NULL;
213 p->chunks[i].chunk_id = user_chunk.chunk_id;
214 p->chunks[i].user_ptr = (void __user *)(unsigned long)user_chunk.chunk_data;
215 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_RELOCS) {
216 p->chunk_relocs_idx = i;
218 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_IB) {
220 /* zero length IB isn't useful */
221 if (p->chunks[i].length_dw == 0)
224 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_CONST_IB) {
225 p->chunk_const_ib_idx = i;
226 /* zero length CONST IB isn't useful */
227 if (p->chunks[i].length_dw == 0)
230 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_FLAGS) {
231 p->chunk_flags_idx = i;
232 /* zero length flags aren't useful */
233 if (p->chunks[i].length_dw == 0)
237 cdata = (uint32_t *)(unsigned long)user_chunk.chunk_data;
238 if ((p->chunks[i].chunk_id == RADEON_CHUNK_ID_RELOCS) ||
239 (p->chunks[i].chunk_id == RADEON_CHUNK_ID_FLAGS)) {
240 size = p->chunks[i].length_dw * sizeof(uint32_t);
241 p->chunks[i].kdata = kmalloc(size, GFP_KERNEL);
242 if (p->chunks[i].kdata == NULL) {
245 if (DRM_COPY_FROM_USER(p->chunks[i].kdata,
246 p->chunks[i].user_ptr, size)) {
249 if (p->chunks[i].chunk_id == RADEON_CHUNK_ID_FLAGS) {
250 p->cs_flags = p->chunks[i].kdata[0];
251 if (p->chunks[i].length_dw > 1)
252 ring = p->chunks[i].kdata[1];
253 if (p->chunks[i].length_dw > 2)
254 priority = (s32)p->chunks[i].kdata[2];
259 /* these are KMS only */
261 if ((p->cs_flags & RADEON_CS_USE_VM) &&
262 !p->rdev->vm_manager.enabled) {
263 DRM_ERROR("VM not active on asic!\n");
267 if (radeon_cs_get_ring(p, ring, priority))
270 /* we only support VM on some SI+ rings */
271 if ((p->rdev->asic->ring[p->ring].cs_parse == NULL) &&
272 ((p->cs_flags & RADEON_CS_USE_VM) == 0)) {
273 DRM_ERROR("Ring %d requires VM!\n", p->ring);
278 /* deal with non-vm */
279 if ((p->chunk_ib_idx != -1) &&
280 ((p->cs_flags & RADEON_CS_USE_VM) == 0) &&
281 (p->chunks[p->chunk_ib_idx].chunk_id == RADEON_CHUNK_ID_IB)) {
282 if (p->chunks[p->chunk_ib_idx].length_dw > (16 * 1024)) {
283 DRM_ERROR("cs IB too big: %d\n",
284 p->chunks[p->chunk_ib_idx].length_dw);
287 if (p->rdev && (p->rdev->flags & RADEON_IS_AGP)) {
288 p->chunks[p->chunk_ib_idx].kpage[0] = kmalloc(PAGE_SIZE, GFP_KERNEL);
289 p->chunks[p->chunk_ib_idx].kpage[1] = kmalloc(PAGE_SIZE, GFP_KERNEL);
290 if (p->chunks[p->chunk_ib_idx].kpage[0] == NULL ||
291 p->chunks[p->chunk_ib_idx].kpage[1] == NULL) {
292 kfree(p->chunks[p->chunk_ib_idx].kpage[0]);
293 kfree(p->chunks[p->chunk_ib_idx].kpage[1]);
294 p->chunks[p->chunk_ib_idx].kpage[0] = NULL;
295 p->chunks[p->chunk_ib_idx].kpage[1] = NULL;
299 p->chunks[p->chunk_ib_idx].kpage_idx[0] = -1;
300 p->chunks[p->chunk_ib_idx].kpage_idx[1] = -1;
301 p->chunks[p->chunk_ib_idx].last_copied_page = -1;
302 p->chunks[p->chunk_ib_idx].last_page_index =
303 ((p->chunks[p->chunk_ib_idx].length_dw * 4) - 1) / PAGE_SIZE;
310 * cs_parser_fini() - clean parser states
311 * @parser: parser structure holding parsing context.
312 * @error: error number
314 * If error is set than unvalidate buffer, otherwise just free memory
315 * used by parsing context.
317 static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error, bool backoff)
322 ttm_eu_fence_buffer_objects(&parser->ticket,
325 } else if (backoff) {
326 ttm_eu_backoff_reservation(&parser->ticket,
330 if (parser->relocs != NULL) {
331 for (i = 0; i < parser->nrelocs; i++) {
332 if (parser->relocs[i].gobj)
333 drm_gem_object_unreference_unlocked(parser->relocs[i].gobj);
336 kfree(parser->track);
337 kfree(parser->relocs);
338 kfree(parser->relocs_ptr);
339 for (i = 0; i < parser->nchunks; i++) {
340 kfree(parser->chunks[i].kdata);
341 if ((parser->rdev->flags & RADEON_IS_AGP)) {
342 kfree(parser->chunks[i].kpage[0]);
343 kfree(parser->chunks[i].kpage[1]);
346 kfree(parser->chunks);
347 kfree(parser->chunks_array);
348 radeon_ib_free(parser->rdev, &parser->ib);
349 radeon_ib_free(parser->rdev, &parser->const_ib);
352 static int radeon_cs_ib_chunk(struct radeon_device *rdev,
353 struct radeon_cs_parser *parser)
355 struct radeon_cs_chunk *ib_chunk;
358 if (parser->chunk_ib_idx == -1)
361 if (parser->cs_flags & RADEON_CS_USE_VM)
364 ib_chunk = &parser->chunks[parser->chunk_ib_idx];
365 /* Copy the packet into the IB, the parser will read from the
366 * input memory (cached) and write to the IB (which can be
369 r = radeon_ib_get(rdev, parser->ring, &parser->ib,
370 NULL, ib_chunk->length_dw * 4);
372 DRM_ERROR("Failed to get ib !\n");
375 parser->ib.length_dw = ib_chunk->length_dw;
376 r = radeon_cs_parse(rdev, parser->ring, parser);
377 if (r || parser->parser_error) {
378 DRM_ERROR("Invalid command stream !\n");
381 r = radeon_cs_finish_pages(parser);
383 DRM_ERROR("Invalid command stream !\n");
386 radeon_cs_sync_rings(parser);
387 r = radeon_ib_schedule(rdev, &parser->ib, NULL);
389 DRM_ERROR("Failed to schedule IB !\n");
394 static int radeon_bo_vm_update_pte(struct radeon_cs_parser *parser,
395 struct radeon_vm *vm)
397 struct radeon_device *rdev = parser->rdev;
398 struct radeon_bo_list *lobj;
399 struct radeon_bo *bo;
402 r = radeon_vm_bo_update_pte(rdev, vm, rdev->ring_tmp_bo.bo, &rdev->ring_tmp_bo.bo->tbo.mem);
406 list_for_each_entry(lobj, &parser->validated, tv.head) {
408 r = radeon_vm_bo_update_pte(parser->rdev, vm, bo, &bo->tbo.mem);
416 static int radeon_cs_ib_vm_chunk(struct radeon_device *rdev,
417 struct radeon_cs_parser *parser)
419 struct radeon_cs_chunk *ib_chunk;
420 struct radeon_fpriv *fpriv = parser->filp->driver_priv;
421 struct radeon_vm *vm = &fpriv->vm;
424 if (parser->chunk_ib_idx == -1)
426 if ((parser->cs_flags & RADEON_CS_USE_VM) == 0)
429 if ((rdev->family >= CHIP_TAHITI) &&
430 (parser->chunk_const_ib_idx != -1)) {
431 ib_chunk = &parser->chunks[parser->chunk_const_ib_idx];
432 if (ib_chunk->length_dw > RADEON_IB_VM_MAX_SIZE) {
433 DRM_ERROR("cs IB CONST too big: %d\n", ib_chunk->length_dw);
436 r = radeon_ib_get(rdev, parser->ring, &parser->const_ib,
437 vm, ib_chunk->length_dw * 4);
439 DRM_ERROR("Failed to get const ib !\n");
442 parser->const_ib.is_const_ib = true;
443 parser->const_ib.length_dw = ib_chunk->length_dw;
444 /* Copy the packet into the IB */
445 if (DRM_COPY_FROM_USER(parser->const_ib.ptr, ib_chunk->user_ptr,
446 ib_chunk->length_dw * 4)) {
449 r = radeon_ring_ib_parse(rdev, parser->ring, &parser->const_ib);
455 ib_chunk = &parser->chunks[parser->chunk_ib_idx];
456 if (ib_chunk->length_dw > RADEON_IB_VM_MAX_SIZE) {
457 DRM_ERROR("cs IB too big: %d\n", ib_chunk->length_dw);
460 r = radeon_ib_get(rdev, parser->ring, &parser->ib,
461 vm, ib_chunk->length_dw * 4);
463 DRM_ERROR("Failed to get ib !\n");
466 parser->ib.length_dw = ib_chunk->length_dw;
467 /* Copy the packet into the IB */
468 if (DRM_COPY_FROM_USER(parser->ib.ptr, ib_chunk->user_ptr,
469 ib_chunk->length_dw * 4)) {
472 r = radeon_ring_ib_parse(rdev, parser->ring, &parser->ib);
477 mutex_lock(&rdev->vm_manager.lock);
478 mutex_lock(&vm->mutex);
479 r = radeon_vm_alloc_pt(rdev, vm);
483 r = radeon_bo_vm_update_pte(parser, vm);
487 radeon_cs_sync_rings(parser);
488 radeon_ib_sync_to(&parser->ib, vm->fence);
489 radeon_ib_sync_to(&parser->ib, radeon_vm_grab_id(
490 rdev, vm, parser->ring));
492 if ((rdev->family >= CHIP_TAHITI) &&
493 (parser->chunk_const_ib_idx != -1)) {
494 r = radeon_ib_schedule(rdev, &parser->ib, &parser->const_ib);
496 r = radeon_ib_schedule(rdev, &parser->ib, NULL);
500 radeon_vm_fence(rdev, vm, parser->ib.fence);
504 radeon_vm_add_to_lru(rdev, vm);
505 mutex_unlock(&vm->mutex);
506 mutex_unlock(&rdev->vm_manager.lock);
510 static int radeon_cs_handle_lockup(struct radeon_device *rdev, int r)
513 r = radeon_gpu_reset(rdev);
520 int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
522 struct radeon_device *rdev = dev->dev_private;
523 struct radeon_cs_parser parser;
526 down_read(&rdev->exclusive_lock);
527 if (!rdev->accel_working) {
528 up_read(&rdev->exclusive_lock);
531 /* initialize parser */
532 memset(&parser, 0, sizeof(struct radeon_cs_parser));
535 parser.dev = rdev->dev;
536 parser.family = rdev->family;
537 r = radeon_cs_parser_init(&parser, data);
539 DRM_ERROR("Failed to initialize parser !\n");
540 radeon_cs_parser_fini(&parser, r, false);
541 up_read(&rdev->exclusive_lock);
542 r = radeon_cs_handle_lockup(rdev, r);
545 r = radeon_cs_parser_relocs(&parser);
547 if (r != -ERESTARTSYS)
548 DRM_ERROR("Failed to parse relocation %d!\n", r);
549 radeon_cs_parser_fini(&parser, r, false);
550 up_read(&rdev->exclusive_lock);
551 r = radeon_cs_handle_lockup(rdev, r);
555 /* XXX pick SD/HD/MVC */
556 if (parser.ring == R600_RING_TYPE_UVD_INDEX)
557 radeon_uvd_note_usage(rdev);
559 r = radeon_cs_ib_chunk(rdev, &parser);
563 r = radeon_cs_ib_vm_chunk(rdev, &parser);
568 radeon_cs_parser_fini(&parser, r, true);
569 up_read(&rdev->exclusive_lock);
570 r = radeon_cs_handle_lockup(rdev, r);
574 int radeon_cs_finish_pages(struct radeon_cs_parser *p)
576 struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx];
578 int size = PAGE_SIZE;
580 for (i = ibc->last_copied_page + 1; i <= ibc->last_page_index; i++) {
581 if (i == ibc->last_page_index) {
582 size = (ibc->length_dw * 4) % PAGE_SIZE;
587 if (DRM_COPY_FROM_USER(p->ib.ptr + (i * (PAGE_SIZE/4)),
588 ibc->user_ptr + (i * PAGE_SIZE),
595 static int radeon_cs_update_pages(struct radeon_cs_parser *p, int pg_idx)
598 struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx];
600 int size = PAGE_SIZE;
601 bool copy1 = (p->rdev && (p->rdev->flags & RADEON_IS_AGP)) ?
604 for (i = ibc->last_copied_page + 1; i < pg_idx; i++) {
605 if (DRM_COPY_FROM_USER(p->ib.ptr + (i * (PAGE_SIZE/4)),
606 ibc->user_ptr + (i * PAGE_SIZE),
608 p->parser_error = -EFAULT;
613 if (pg_idx == ibc->last_page_index) {
614 size = (ibc->length_dw * 4) % PAGE_SIZE;
619 new_page = ibc->kpage_idx[0] < ibc->kpage_idx[1] ? 0 : 1;
621 ibc->kpage[new_page] = p->ib.ptr + (pg_idx * (PAGE_SIZE / 4));
623 if (DRM_COPY_FROM_USER(ibc->kpage[new_page],
624 ibc->user_ptr + (pg_idx * PAGE_SIZE),
626 p->parser_error = -EFAULT;
630 /* copy to IB for non single case */
632 memcpy((void *)(p->ib.ptr+(pg_idx*(PAGE_SIZE/4))), ibc->kpage[new_page], size);
634 ibc->last_copied_page = pg_idx;
635 ibc->kpage_idx[new_page] = pg_idx;
640 u32 radeon_get_ib_value(struct radeon_cs_parser *p, int idx)
642 struct radeon_cs_chunk *ibc = &p->chunks[p->chunk_ib_idx];
643 u32 pg_idx, pg_offset;
647 pg_idx = (idx * 4) / PAGE_SIZE;
648 pg_offset = (idx * 4) % PAGE_SIZE;
650 if (ibc->kpage_idx[0] == pg_idx)
651 return ibc->kpage[0][pg_offset/4];
652 if (ibc->kpage_idx[1] == pg_idx)
653 return ibc->kpage[1][pg_offset/4];
655 new_page = radeon_cs_update_pages(p, pg_idx);
657 p->parser_error = new_page;
661 idx_value = ibc->kpage[new_page][pg_offset/4];
666 * radeon_cs_packet_parse() - parse cp packet and point ib index to next packet
667 * @parser: parser structure holding parsing context.
668 * @pkt: where to store packet information
670 * Assume that chunk_ib_index is properly set. Will return -EINVAL
671 * if packet is bigger than remaining ib size. or if packets is unknown.
673 int radeon_cs_packet_parse(struct radeon_cs_parser *p,
674 struct radeon_cs_packet *pkt,
677 struct radeon_cs_chunk *ib_chunk = &p->chunks[p->chunk_ib_idx];
678 struct radeon_device *rdev = p->rdev;
681 if (idx >= ib_chunk->length_dw) {
682 DRM_ERROR("Can not parse packet at %d after CS end %d !\n",
683 idx, ib_chunk->length_dw);
686 header = radeon_get_ib_value(p, idx);
688 pkt->type = RADEON_CP_PACKET_GET_TYPE(header);
689 pkt->count = RADEON_CP_PACKET_GET_COUNT(header);
692 case RADEON_PACKET_TYPE0:
693 if (rdev->family < CHIP_R600) {
694 pkt->reg = R100_CP_PACKET0_GET_REG(header);
696 RADEON_CP_PACKET0_GET_ONE_REG_WR(header);
698 pkt->reg = R600_CP_PACKET0_GET_REG(header);
700 case RADEON_PACKET_TYPE3:
701 pkt->opcode = RADEON_CP_PACKET3_GET_OPCODE(header);
703 case RADEON_PACKET_TYPE2:
707 DRM_ERROR("Unknown packet type %d at %d !\n", pkt->type, idx);
710 if ((pkt->count + 1 + pkt->idx) >= ib_chunk->length_dw) {
711 DRM_ERROR("Packet (%d:%d:%d) end after CS buffer (%d) !\n",
712 pkt->idx, pkt->type, pkt->count, ib_chunk->length_dw);
719 * radeon_cs_packet_next_is_pkt3_nop() - test if the next packet is P3 NOP
720 * @p: structure holding the parser context.
722 * Check if the next packet is NOP relocation packet3.
724 bool radeon_cs_packet_next_is_pkt3_nop(struct radeon_cs_parser *p)
726 struct radeon_cs_packet p3reloc;
729 r = radeon_cs_packet_parse(p, &p3reloc, p->idx);
732 if (p3reloc.type != RADEON_PACKET_TYPE3)
734 if (p3reloc.opcode != RADEON_PACKET3_NOP)
740 * radeon_cs_dump_packet() - dump raw packet context
741 * @p: structure holding the parser context.
742 * @pkt: structure holding the packet.
744 * Used mostly for debugging and error reporting.
746 void radeon_cs_dump_packet(struct radeon_cs_parser *p,
747 struct radeon_cs_packet *pkt)
749 volatile uint32_t *ib;
755 for (i = 0; i <= (pkt->count + 1); i++, idx++)
756 DRM_INFO("ib[%d]=0x%08X\n", idx, ib[idx]);
760 * radeon_cs_packet_next_reloc() - parse next (should be reloc) packet
761 * @parser: parser structure holding parsing context.
762 * @data: pointer to relocation data
763 * @offset_start: starting offset
764 * @offset_mask: offset mask (to align start offset on)
765 * @reloc: reloc informations
767 * Check if next packet is relocation packet3, do bo validation and compute
768 * GPU offset using the provided start.
770 int radeon_cs_packet_next_reloc(struct radeon_cs_parser *p,
771 struct radeon_cs_reloc **cs_reloc,
774 struct radeon_cs_chunk *relocs_chunk;
775 struct radeon_cs_packet p3reloc;
779 if (p->chunk_relocs_idx == -1) {
780 DRM_ERROR("No relocation chunk !\n");
784 relocs_chunk = &p->chunks[p->chunk_relocs_idx];
785 r = radeon_cs_packet_parse(p, &p3reloc, p->idx);
788 p->idx += p3reloc.count + 2;
789 if (p3reloc.type != RADEON_PACKET_TYPE3 ||
790 p3reloc.opcode != RADEON_PACKET3_NOP) {
791 DRM_ERROR("No packet3 for relocation for packet at %d.\n",
793 radeon_cs_dump_packet(p, &p3reloc);
796 idx = radeon_get_ib_value(p, p3reloc.idx + 1);
797 if (idx >= relocs_chunk->length_dw) {
798 DRM_ERROR("Relocs at %d after relocations chunk end %d !\n",
799 idx, relocs_chunk->length_dw);
800 radeon_cs_dump_packet(p, &p3reloc);
803 /* FIXME: we assume reloc size is 4 dwords */
805 *cs_reloc = p->relocs;
806 (*cs_reloc)->lobj.gpu_offset =
807 (u64)relocs_chunk->kdata[idx + 3] << 32;
808 (*cs_reloc)->lobj.gpu_offset |= relocs_chunk->kdata[idx + 0];
810 *cs_reloc = p->relocs_ptr[(idx / 4)];