/* * Copyright © 2015 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include #include #include #include #include #include "anv_private.h" #include "genxml/gen7_pack.h" #include "genxml/gen8_pack.h" /** \file anv_batch_chain.c * * This file contains functions related to anv_cmd_buffer as a data * structure. This involves everything required to create and destroy * the actual batch buffers as well as link them together and handle * relocations and surface state. It specifically does *not* contain any * handling of actual vkCmd calls beyond vkCmdExecuteCommands. */ /*-----------------------------------------------------------------------* * Functions related to anv_reloc_list *-----------------------------------------------------------------------*/ static VkResult anv_reloc_list_init_clone(struct anv_reloc_list *list, const VkAllocationCallbacks *alloc, const struct anv_reloc_list *other_list) { if (other_list) { list->num_relocs = other_list->num_relocs; list->array_length = other_list->array_length; } else { list->num_relocs = 0; list->array_length = 256; } list->relocs = anv_alloc(alloc, list->array_length * sizeof(*list->relocs), 8, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); if (list->relocs == NULL) return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY); list->reloc_bos = anv_alloc(alloc, list->array_length * sizeof(*list->reloc_bos), 8, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); if (list->reloc_bos == NULL) { anv_free(alloc, list->relocs); return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY); } if (other_list) { memcpy(list->relocs, other_list->relocs, list->array_length * sizeof(*list->relocs)); memcpy(list->reloc_bos, other_list->reloc_bos, list->array_length * sizeof(*list->reloc_bos)); } return VK_SUCCESS; } VkResult anv_reloc_list_init(struct anv_reloc_list *list, const VkAllocationCallbacks *alloc) { return anv_reloc_list_init_clone(list, alloc, NULL); } void anv_reloc_list_finish(struct anv_reloc_list *list, const VkAllocationCallbacks *alloc) { anv_free(alloc, list->relocs); anv_free(alloc, list->reloc_bos); } static VkResult anv_reloc_list_grow(struct anv_reloc_list *list, const VkAllocationCallbacks *alloc, size_t num_additional_relocs) { if (list->num_relocs + num_additional_relocs <= list->array_length) return VK_SUCCESS; size_t new_length = list->array_length * 2; while (new_length < list->num_relocs + num_additional_relocs) new_length *= 2; struct drm_i915_gem_relocation_entry *new_relocs = anv_alloc(alloc, new_length * sizeof(*list->relocs), 8, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); if (new_relocs == NULL) return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY); struct anv_bo **new_reloc_bos = anv_alloc(alloc, new_length * sizeof(*list->reloc_bos), 8, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); if (new_relocs == NULL) { anv_free(alloc, new_relocs); return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY); } memcpy(new_relocs, list->relocs, list->num_relocs * sizeof(*list->relocs)); memcpy(new_reloc_bos, list->reloc_bos, list->num_relocs * sizeof(*list->reloc_bos)); anv_free(alloc, list->relocs); anv_free(alloc, list->reloc_bos); list->array_length = new_length; list->relocs = new_relocs; list->reloc_bos = new_reloc_bos; return VK_SUCCESS; } uint64_t anv_reloc_list_add(struct anv_reloc_list *list, const VkAllocationCallbacks *alloc, uint32_t offset, struct anv_bo *target_bo, uint32_t delta) { struct drm_i915_gem_relocation_entry *entry; int index; const uint32_t domain = target_bo->is_winsys_bo ? I915_GEM_DOMAIN_RENDER : 0; anv_reloc_list_grow(list, alloc, 1); /* TODO: Handle failure */ /* XXX: Can we use I915_EXEC_HANDLE_LUT? */ index = list->num_relocs++; list->reloc_bos[index] = target_bo; entry = &list->relocs[index]; entry->target_handle = target_bo->gem_handle; entry->delta = delta; entry->offset = offset; entry->presumed_offset = target_bo->offset; entry->read_domains = domain; entry->write_domain = domain; VG(VALGRIND_CHECK_MEM_IS_DEFINED(entry, sizeof(*entry))); return target_bo->offset + delta; } static void anv_reloc_list_append(struct anv_reloc_list *list, const VkAllocationCallbacks *alloc, struct anv_reloc_list *other, uint32_t offset) { anv_reloc_list_grow(list, alloc, other->num_relocs); /* TODO: Handle failure */ memcpy(&list->relocs[list->num_relocs], &other->relocs[0], other->num_relocs * sizeof(other->relocs[0])); memcpy(&list->reloc_bos[list->num_relocs], &other->reloc_bos[0], other->num_relocs * sizeof(other->reloc_bos[0])); for (uint32_t i = 0; i < other->num_relocs; i++) list->relocs[i + list->num_relocs].offset += offset; list->num_relocs += other->num_relocs; } /*-----------------------------------------------------------------------* * Functions related to anv_batch *-----------------------------------------------------------------------*/ void * anv_batch_emit_dwords(struct anv_batch *batch, int num_dwords) { if (batch->next + num_dwords * 4 > batch->end) batch->extend_cb(batch, batch->user_data); void *p = batch->next; batch->next += num_dwords * 4; assert(batch->next <= batch->end); return p; } uint64_t anv_batch_emit_reloc(struct anv_batch *batch, void *location, struct anv_bo *bo, uint32_t delta) { return anv_reloc_list_add(batch->relocs, batch->alloc, location - batch->start, bo, delta); } void anv_batch_emit_batch(struct anv_batch *batch, struct anv_batch *other) { uint32_t size, offset; size = other->next - other->start; assert(size % 4 == 0); if (batch->next + size > batch->end) batch->extend_cb(batch, batch->user_data); assert(batch->next + size <= batch->end); VG(VALGRIND_CHECK_MEM_IS_DEFINED(other->start, size)); memcpy(batch->next, other->start, size); offset = batch->next - batch->start; anv_reloc_list_append(batch->relocs, batch->alloc, other->relocs, offset); batch->next += size; } /*-----------------------------------------------------------------------* * Functions related to anv_batch_bo *-----------------------------------------------------------------------*/ static VkResult anv_batch_bo_create(struct anv_cmd_buffer *cmd_buffer, struct anv_batch_bo **bbo_out) { VkResult result; struct anv_batch_bo *bbo = anv_alloc(&cmd_buffer->pool->alloc, sizeof(*bbo), 8, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); if (bbo == NULL) return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY); result = anv_bo_pool_alloc(&cmd_buffer->device->batch_bo_pool, &bbo->bo, ANV_CMD_BUFFER_BATCH_SIZE); if (result != VK_SUCCESS) goto fail_alloc; result = anv_reloc_list_init(&bbo->relocs, &cmd_buffer->pool->alloc); if (result != VK_SUCCESS) goto fail_bo_alloc; *bbo_out = bbo; return VK_SUCCESS; fail_bo_alloc: anv_bo_pool_free(&cmd_buffer->device->batch_bo_pool, &bbo->bo); fail_alloc: anv_free(&cmd_buffer->pool->alloc, bbo); return result; } static VkResult anv_batch_bo_clone(struct anv_cmd_buffer *cmd_buffer, const struct anv_batch_bo *other_bbo, struct anv_batch_bo **bbo_out) { VkResult result; struct anv_batch_bo *bbo = anv_alloc(&cmd_buffer->pool->alloc, sizeof(*bbo), 8, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); if (bbo == NULL) return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY); result = anv_bo_pool_alloc(&cmd_buffer->device->batch_bo_pool, &bbo->bo, other_bbo->bo.size); if (result != VK_SUCCESS) goto fail_alloc; result = anv_reloc_list_init_clone(&bbo->relocs, &cmd_buffer->pool->alloc, &other_bbo->relocs); if (result != VK_SUCCESS) goto fail_bo_alloc; bbo->length = other_bbo->length; memcpy(bbo->bo.map, other_bbo->bo.map, other_bbo->length); bbo->last_ss_pool_bo_offset = other_bbo->last_ss_pool_bo_offset; *bbo_out = bbo; return VK_SUCCESS; fail_bo_alloc: anv_bo_pool_free(&cmd_buffer->device->batch_bo_pool, &bbo->bo); fail_alloc: anv_free(&cmd_buffer->pool->alloc, bbo); return result; } static void anv_batch_bo_start(struct anv_batch_bo *bbo, struct anv_batch *batch, size_t batch_padding) { batch->next = batch->start = bbo->bo.map; batch->end = bbo->bo.map + bbo->bo.size - batch_padding; batch->relocs = &bbo->relocs; bbo->last_ss_pool_bo_offset = 0; bbo->relocs.num_relocs = 0; } static void anv_batch_bo_continue(struct anv_batch_bo *bbo, struct anv_batch *batch, size_t batch_padding) { batch->start = bbo->bo.map; batch->next = bbo->bo.map + bbo->length; batch->end = bbo->bo.map + bbo->bo.size - batch_padding; batch->relocs = &bbo->relocs; } static void anv_batch_bo_finish(struct anv_batch_bo *bbo, struct anv_batch *batch) { assert(batch->start == bbo->bo.map); bbo->length = batch->next - batch->start; VG(VALGRIND_CHECK_MEM_IS_DEFINED(batch->start, bbo->length)); } static VkResult anv_batch_bo_grow(struct anv_cmd_buffer *cmd_buffer, struct anv_batch_bo *bbo, struct anv_batch *batch, size_t aditional, size_t batch_padding) { assert(batch->start == bbo->bo.map); bbo->length = batch->next - batch->start; size_t new_size = bbo->bo.size; while (new_size <= bbo->length + aditional + batch_padding) new_size *= 2; if (new_size == bbo->bo.size) return VK_SUCCESS; struct anv_bo new_bo; VkResult result = anv_bo_pool_alloc(&cmd_buffer->device->batch_bo_pool, &new_bo, new_size); if (result != VK_SUCCESS) return result; memcpy(new_bo.map, bbo->bo.map, bbo->length); anv_bo_pool_free(&cmd_buffer->device->batch_bo_pool, &bbo->bo); bbo->bo = new_bo; anv_batch_bo_continue(bbo, batch, batch_padding); return VK_SUCCESS; } static void anv_batch_bo_destroy(struct anv_batch_bo *bbo, struct anv_cmd_buffer *cmd_buffer) { anv_reloc_list_finish(&bbo->relocs, &cmd_buffer->pool->alloc); anv_bo_pool_free(&cmd_buffer->device->batch_bo_pool, &bbo->bo); anv_free(&cmd_buffer->pool->alloc, bbo); } static VkResult anv_batch_bo_list_clone(const struct list_head *list, struct anv_cmd_buffer *cmd_buffer, struct list_head *new_list) { VkResult result = VK_SUCCESS; list_inithead(new_list); struct anv_batch_bo *prev_bbo = NULL; list_for_each_entry(struct anv_batch_bo, bbo, list, link) { struct anv_batch_bo *new_bbo = NULL; result = anv_batch_bo_clone(cmd_buffer, bbo, &new_bbo); if (result != VK_SUCCESS) break; list_addtail(&new_bbo->link, new_list); if (prev_bbo) { /* As we clone this list of batch_bo's, they chain one to the * other using MI_BATCH_BUFFER_START commands. We need to fix up * those relocations as we go. Fortunately, this is pretty easy * as it will always be the last relocation in the list. */ uint32_t last_idx = prev_bbo->relocs.num_relocs - 1; assert(prev_bbo->relocs.reloc_bos[last_idx] == &bbo->bo); prev_bbo->relocs.reloc_bos[last_idx] = &new_bbo->bo; } prev_bbo = new_bbo; } if (result != VK_SUCCESS) { list_for_each_entry_safe(struct anv_batch_bo, bbo, new_list, link) anv_batch_bo_destroy(bbo, cmd_buffer); } return result; } /*-----------------------------------------------------------------------* * Functions related to anv_batch_bo *-----------------------------------------------------------------------*/ static inline struct anv_batch_bo * anv_cmd_buffer_current_batch_bo(struct anv_cmd_buffer *cmd_buffer) { return LIST_ENTRY(struct anv_batch_bo, cmd_buffer->batch_bos.prev, link); } struct anv_address anv_cmd_buffer_surface_base_address(struct anv_cmd_buffer *cmd_buffer) { return (struct anv_address) { .bo = &cmd_buffer->device->surface_state_block_pool.bo, .offset = *(int32_t *)anv_vector_head(&cmd_buffer->bt_blocks), }; } static void emit_batch_buffer_start(struct anv_cmd_buffer *cmd_buffer, struct anv_bo *bo, uint32_t offset) { /* In gen8+ the address field grew to two dwords to accomodate 48 bit * offsets. The high 16 bits are in the last dword, so we can use the gen8 * version in either case, as long as we set the instruction length in the * header accordingly. This means that we always emit three dwords here * and all the padding and adjustment we do in this file works for all * gens. */ const uint32_t gen7_length = GEN7_MI_BATCH_BUFFER_START_length - GEN7_MI_BATCH_BUFFER_START_length_bias; const uint32_t gen8_length = GEN8_MI_BATCH_BUFFER_START_length - GEN8_MI_BATCH_BUFFER_START_length_bias; anv_batch_emit(&cmd_buffer->batch, GEN8_MI_BATCH_BUFFER_START, .DWordLength = cmd_buffer->device->info.gen < 8 ? gen7_length : gen8_length, ._2ndLevelBatchBuffer = _1stlevelbatch, .AddressSpaceIndicator = ASI_PPGTT, .BatchBufferStartAddress = { bo, offset }); } static void cmd_buffer_chain_to_batch_bo(struct anv_cmd_buffer *cmd_buffer, struct anv_batch_bo *bbo) { struct anv_batch *batch = &cmd_buffer->batch; struct anv_batch_bo *current_bbo = anv_cmd_buffer_current_batch_bo(cmd_buffer); /* We set the end of the batch a little short so we would be sure we * have room for the chaining command. Since we're about to emit the * chaining command, let's set it back where it should go. */ batch->end += GEN8_MI_BATCH_BUFFER_START_length * 4; assert(batch->end == current_bbo->bo.map + current_bbo->bo.size); emit_batch_buffer_start(cmd_buffer, &bbo->bo, 0); anv_batch_bo_finish(current_bbo, batch); } static VkResult anv_cmd_buffer_chain_batch(struct anv_batch *batch, void *_data) { struct anv_cmd_buffer *cmd_buffer = _data; struct anv_batch_bo *new_bbo; VkResult result = anv_batch_bo_create(cmd_buffer, &new_bbo); if (result != VK_SUCCESS) return result; struct anv_batch_bo **seen_bbo = anv_vector_add(&cmd_buffer->seen_bbos); if (seen_bbo == NULL) { anv_batch_bo_destroy(new_bbo, cmd_buffer); return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY); } *seen_bbo = new_bbo; cmd_buffer_chain_to_batch_bo(cmd_buffer, new_bbo); list_addtail(&new_bbo->link, &cmd_buffer->batch_bos); anv_batch_bo_start(new_bbo, batch, GEN8_MI_BATCH_BUFFER_START_length * 4); return VK_SUCCESS; } static VkResult anv_cmd_buffer_grow_batch(struct anv_batch *batch, void *_data) { struct anv_cmd_buffer *cmd_buffer = _data; struct anv_batch_bo *bbo = anv_cmd_buffer_current_batch_bo(cmd_buffer); anv_batch_bo_grow(cmd_buffer, bbo, &cmd_buffer->batch, 4096, GEN8_MI_BATCH_BUFFER_START_length * 4); return VK_SUCCESS; } struct anv_state anv_cmd_buffer_alloc_binding_table(struct anv_cmd_buffer *cmd_buffer, uint32_t entries, uint32_t *state_offset) { struct anv_block_pool *block_pool = &cmd_buffer->device->surface_state_block_pool; int32_t *bt_block = anv_vector_head(&cmd_buffer->bt_blocks); struct anv_state state; state.alloc_size = align_u32(entries * 4, 32); if (cmd_buffer->bt_next + state.alloc_size > block_pool->block_size) return (struct anv_state) { 0 }; state.offset = cmd_buffer->bt_next; state.map = block_pool->map + *bt_block + state.offset; cmd_buffer->bt_next += state.alloc_size; assert(*bt_block < 0); *state_offset = -(*bt_block); return state; } struct anv_state anv_cmd_buffer_alloc_surface_state(struct anv_cmd_buffer *cmd_buffer) { return anv_state_stream_alloc(&cmd_buffer->surface_state_stream, 64, 64); } struct anv_state anv_cmd_buffer_alloc_dynamic_state(struct anv_cmd_buffer *cmd_buffer, uint32_t size, uint32_t alignment) { return anv_state_stream_alloc(&cmd_buffer->dynamic_state_stream, size, alignment); } VkResult anv_cmd_buffer_new_binding_table_block(struct anv_cmd_buffer *cmd_buffer) { struct anv_block_pool *block_pool = &cmd_buffer->device->surface_state_block_pool; int32_t *offset = anv_vector_add(&cmd_buffer->bt_blocks); if (offset == NULL) return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY); *offset = anv_block_pool_alloc_back(block_pool); cmd_buffer->bt_next = 0; return VK_SUCCESS; } VkResult anv_cmd_buffer_init_batch_bo_chain(struct anv_cmd_buffer *cmd_buffer) { struct anv_batch_bo *batch_bo; VkResult result; list_inithead(&cmd_buffer->batch_bos); result = anv_batch_bo_create(cmd_buffer, &batch_bo); if (result != VK_SUCCESS) return result; list_addtail(&batch_bo->link, &cmd_buffer->batch_bos); cmd_buffer->batch.alloc = &cmd_buffer->pool->alloc; cmd_buffer->batch.user_data = cmd_buffer; if (cmd_buffer->device->can_chain_batches) { cmd_buffer->batch.extend_cb = anv_cmd_buffer_chain_batch; } else { cmd_buffer->batch.extend_cb = anv_cmd_buffer_grow_batch; } anv_batch_bo_start(batch_bo, &cmd_buffer->batch, GEN8_MI_BATCH_BUFFER_START_length * 4); int success = anv_vector_init(&cmd_buffer->seen_bbos, sizeof(struct anv_bo *), 8 * sizeof(struct anv_bo *)); if (!success) goto fail_batch_bo; *(struct anv_batch_bo **)anv_vector_add(&cmd_buffer->seen_bbos) = batch_bo; success = anv_vector_init(&cmd_buffer->bt_blocks, sizeof(int32_t), 8 * sizeof(int32_t)); if (!success) goto fail_seen_bbos; result = anv_reloc_list_init(&cmd_buffer->surface_relocs, &cmd_buffer->pool->alloc); if (result != VK_SUCCESS) goto fail_bt_blocks; anv_cmd_buffer_new_binding_table_block(cmd_buffer); cmd_buffer->execbuf2.objects = NULL; cmd_buffer->execbuf2.bos = NULL; cmd_buffer->execbuf2.array_length = 0; return VK_SUCCESS; fail_bt_blocks: anv_vector_finish(&cmd_buffer->bt_blocks); fail_seen_bbos: anv_vector_finish(&cmd_buffer->seen_bbos); fail_batch_bo: anv_batch_bo_destroy(batch_bo, cmd_buffer); return result; } void anv_cmd_buffer_fini_batch_bo_chain(struct anv_cmd_buffer *cmd_buffer) { int32_t *bt_block; anv_vector_foreach(bt_block, &cmd_buffer->bt_blocks) { anv_block_pool_free(&cmd_buffer->device->surface_state_block_pool, *bt_block); } anv_vector_finish(&cmd_buffer->bt_blocks); anv_reloc_list_finish(&cmd_buffer->surface_relocs, &cmd_buffer->pool->alloc); anv_vector_finish(&cmd_buffer->seen_bbos); /* Destroy all of the batch buffers */ list_for_each_entry_safe(struct anv_batch_bo, bbo, &cmd_buffer->batch_bos, link) { anv_batch_bo_destroy(bbo, cmd_buffer); } anv_free(&cmd_buffer->pool->alloc, cmd_buffer->execbuf2.objects); anv_free(&cmd_buffer->pool->alloc, cmd_buffer->execbuf2.bos); } void anv_cmd_buffer_reset_batch_bo_chain(struct anv_cmd_buffer *cmd_buffer) { /* Delete all but the first batch bo */ assert(!list_empty(&cmd_buffer->batch_bos)); while (cmd_buffer->batch_bos.next != cmd_buffer->batch_bos.prev) { struct anv_batch_bo *bbo = anv_cmd_buffer_current_batch_bo(cmd_buffer); list_del(&bbo->link); anv_batch_bo_destroy(bbo, cmd_buffer); } assert(!list_empty(&cmd_buffer->batch_bos)); anv_batch_bo_start(anv_cmd_buffer_current_batch_bo(cmd_buffer), &cmd_buffer->batch, GEN8_MI_BATCH_BUFFER_START_length * 4); while (anv_vector_length(&cmd_buffer->bt_blocks) > 1) { int32_t *bt_block = anv_vector_remove(&cmd_buffer->bt_blocks); anv_block_pool_free(&cmd_buffer->device->surface_state_block_pool, *bt_block); } assert(anv_vector_length(&cmd_buffer->bt_blocks) == 1); cmd_buffer->bt_next = 0; cmd_buffer->surface_relocs.num_relocs = 0; /* Reset the list of seen buffers */ cmd_buffer->seen_bbos.head = 0; cmd_buffer->seen_bbos.tail = 0; *(struct anv_batch_bo **)anv_vector_add(&cmd_buffer->seen_bbos) = anv_cmd_buffer_current_batch_bo(cmd_buffer); } void anv_cmd_buffer_end_batch_buffer(struct anv_cmd_buffer *cmd_buffer) { struct anv_batch_bo *batch_bo = anv_cmd_buffer_current_batch_bo(cmd_buffer); if (cmd_buffer->level == VK_COMMAND_BUFFER_LEVEL_PRIMARY) { /* When we start a batch buffer, we subtract a certain amount of * padding from the end to ensure that we always have room to emit a * BATCH_BUFFER_START to chain to the next BO. We need to remove * that padding before we end the batch; otherwise, we may end up * with our BATCH_BUFFER_END in another BO. */ cmd_buffer->batch.end += GEN8_MI_BATCH_BUFFER_START_length * 4; assert(cmd_buffer->batch.end == batch_bo->bo.map + batch_bo->bo.size); anv_batch_emit(&cmd_buffer->batch, GEN7_MI_BATCH_BUFFER_END); /* Round batch up to an even number of dwords. */ if ((cmd_buffer->batch.next - cmd_buffer->batch.start) & 4) anv_batch_emit(&cmd_buffer->batch, GEN7_MI_NOOP); cmd_buffer->exec_mode = ANV_CMD_BUFFER_EXEC_MODE_PRIMARY; } anv_batch_bo_finish(batch_bo, &cmd_buffer->batch); if (cmd_buffer->level == VK_COMMAND_BUFFER_LEVEL_SECONDARY) { /* If this is a secondary command buffer, we need to determine the * mode in which it will be executed with vkExecuteCommands. We * determine this statically here so that this stays in sync with the * actual ExecuteCommands implementation. */ if (!cmd_buffer->device->can_chain_batches) { cmd_buffer->exec_mode = ANV_CMD_BUFFER_EXEC_MODE_GROW_AND_EMIT; } else if ((cmd_buffer->batch_bos.next == cmd_buffer->batch_bos.prev) && (batch_bo->length < ANV_CMD_BUFFER_BATCH_SIZE / 2)) { /* If the secondary has exactly one batch buffer in its list *and* * that batch buffer is less than half of the maximum size, we're * probably better of simply copying it into our batch. */ cmd_buffer->exec_mode = ANV_CMD_BUFFER_EXEC_MODE_EMIT; } else if (!(cmd_buffer->usage_flags & VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT)) { cmd_buffer->exec_mode = ANV_CMD_BUFFER_EXEC_MODE_CHAIN; /* When we chain, we need to add an MI_BATCH_BUFFER_START command * with its relocation. In order to handle this we'll increment here * so we can unconditionally decrement right before adding the * MI_BATCH_BUFFER_START command. */ batch_bo->relocs.num_relocs++; cmd_buffer->batch.next += GEN8_MI_BATCH_BUFFER_START_length * 4; } else { cmd_buffer->exec_mode = ANV_CMD_BUFFER_EXEC_MODE_COPY_AND_CHAIN; } } } static inline VkResult anv_cmd_buffer_add_seen_bbos(struct anv_cmd_buffer *cmd_buffer, struct list_head *list) { list_for_each_entry(struct anv_batch_bo, bbo, list, link) { struct anv_batch_bo **bbo_ptr = anv_vector_add(&cmd_buffer->seen_bbos); if (bbo_ptr == NULL) return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY); *bbo_ptr = bbo; } return VK_SUCCESS; } void anv_cmd_buffer_add_secondary(struct anv_cmd_buffer *primary, struct anv_cmd_buffer *secondary) { switch (secondary->exec_mode) { case ANV_CMD_BUFFER_EXEC_MODE_EMIT: anv_batch_emit_batch(&primary->batch, &secondary->batch); anv_cmd_buffer_emit_state_base_address(primary); break; case ANV_CMD_BUFFER_EXEC_MODE_GROW_AND_EMIT: { struct anv_batch_bo *bbo = anv_cmd_buffer_current_batch_bo(primary); unsigned length = secondary->batch.end - secondary->batch.start; anv_batch_bo_grow(primary, bbo, &primary->batch, length, GEN8_MI_BATCH_BUFFER_START_length * 4); anv_batch_emit_batch(&primary->batch, &secondary->batch); anv_cmd_buffer_emit_state_base_address(primary); break; } case ANV_CMD_BUFFER_EXEC_MODE_CHAIN: { struct anv_batch_bo *first_bbo = list_first_entry(&secondary->batch_bos, struct anv_batch_bo, link); struct anv_batch_bo *last_bbo = list_last_entry(&secondary->batch_bos, struct anv_batch_bo, link); emit_batch_buffer_start(primary, &first_bbo->bo, 0); struct anv_batch_bo *this_bbo = anv_cmd_buffer_current_batch_bo(primary); assert(primary->batch.start == this_bbo->bo.map); uint32_t offset = primary->batch.next - primary->batch.start; const uint32_t inst_size = GEN8_MI_BATCH_BUFFER_START_length * 4; /* Roll back the previous MI_BATCH_BUFFER_START and its relocation so we * can emit a new command and relocation for the current splice. In * order to handle the initial-use case, we incremented next and * num_relocs in end_batch_buffer() so we can alyways just subtract * here. */ last_bbo->relocs.num_relocs--; secondary->batch.next -= inst_size; emit_batch_buffer_start(secondary, &this_bbo->bo, offset); anv_cmd_buffer_add_seen_bbos(primary, &secondary->batch_bos); /* After patching up the secondary buffer, we need to clflush the * modified instruction in case we're on a !llc platform. We use a * little loop to handle the case where the instruction crosses a cache * line boundary. */ if (!primary->device->info.has_llc) { void *inst = secondary->batch.next - inst_size; void *p = (void *) (((uintptr_t) inst) & ~CACHELINE_MASK); __builtin_ia32_mfence(); while (p < secondary->batch.next) { __builtin_ia32_clflush(p); p += CACHELINE_SIZE; } } anv_cmd_buffer_emit_state_base_address(primary); break; } case ANV_CMD_BUFFER_EXEC_MODE_COPY_AND_CHAIN: { struct list_head copy_list; VkResult result = anv_batch_bo_list_clone(&secondary->batch_bos, secondary, ©_list); if (result != VK_SUCCESS) return; /* FIXME */ anv_cmd_buffer_add_seen_bbos(primary, ©_list); struct anv_batch_bo *first_bbo = list_first_entry(©_list, struct anv_batch_bo, link); struct anv_batch_bo *last_bbo = list_last_entry(©_list, struct anv_batch_bo, link); cmd_buffer_chain_to_batch_bo(primary, first_bbo); list_splicetail(©_list, &primary->batch_bos); anv_batch_bo_continue(last_bbo, &primary->batch, GEN8_MI_BATCH_BUFFER_START_length * 4); anv_cmd_buffer_emit_state_base_address(primary); break; } default: assert(!"Invalid execution mode"); } anv_reloc_list_append(&primary->surface_relocs, &primary->pool->alloc, &secondary->surface_relocs, 0); } static VkResult anv_cmd_buffer_add_bo(struct anv_cmd_buffer *cmd_buffer, struct anv_bo *bo, struct anv_reloc_list *relocs) { struct drm_i915_gem_exec_object2 *obj = NULL; if (bo->index < cmd_buffer->execbuf2.bo_count && cmd_buffer->execbuf2.bos[bo->index] == bo) obj = &cmd_buffer->execbuf2.objects[bo->index]; if (obj == NULL) { /* We've never seen this one before. Add it to the list and assign * an id that we can use later. */ if (cmd_buffer->execbuf2.bo_count >= cmd_buffer->execbuf2.array_length) { uint32_t new_len = cmd_buffer->execbuf2.objects ? cmd_buffer->execbuf2.array_length * 2 : 64; struct drm_i915_gem_exec_object2 *new_objects = anv_alloc(&cmd_buffer->pool->alloc, new_len * sizeof(*new_objects), 8, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); if (new_objects == NULL) return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY); struct anv_bo **new_bos = anv_alloc(&cmd_buffer->pool->alloc, new_len * sizeof(*new_bos), 8, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); if (new_objects == NULL) { anv_free(&cmd_buffer->pool->alloc, new_objects); return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY); } if (cmd_buffer->execbuf2.objects) { memcpy(new_objects, cmd_buffer->execbuf2.objects, cmd_buffer->execbuf2.bo_count * sizeof(*new_objects)); memcpy(new_bos, cmd_buffer->execbuf2.bos, cmd_buffer->execbuf2.bo_count * sizeof(*new_bos)); } cmd_buffer->execbuf2.objects = new_objects; cmd_buffer->execbuf2.bos = new_bos; cmd_buffer->execbuf2.array_length = new_len; } assert(cmd_buffer->execbuf2.bo_count < cmd_buffer->execbuf2.array_length); bo->index = cmd_buffer->execbuf2.bo_count++; obj = &cmd_buffer->execbuf2.objects[bo->index]; cmd_buffer->execbuf2.bos[bo->index] = bo; obj->handle = bo->gem_handle; obj->relocation_count = 0; obj->relocs_ptr = 0; obj->alignment = 0; obj->offset = bo->offset; obj->flags = bo->is_winsys_bo ? EXEC_OBJECT_WRITE : 0; obj->rsvd1 = 0; obj->rsvd2 = 0; } if (relocs != NULL && obj->relocation_count == 0) { /* This is the first time we've ever seen a list of relocations for * this BO. Go ahead and set the relocations and then walk the list * of relocations and add them all. */ obj->relocation_count = relocs->num_relocs; obj->relocs_ptr = (uintptr_t) relocs->relocs; for (size_t i = 0; i < relocs->num_relocs; i++) { /* A quick sanity check on relocations */ assert(relocs->relocs[i].offset < bo->size); anv_cmd_buffer_add_bo(cmd_buffer, relocs->reloc_bos[i], NULL); } } return VK_SUCCESS; } static void anv_cmd_buffer_process_relocs(struct anv_cmd_buffer *cmd_buffer, struct anv_reloc_list *list) { struct anv_bo *bo; /* If the kernel supports I915_EXEC_NO_RELOC, it will compare offset in * struct drm_i915_gem_exec_object2 against the bos current offset and if * all bos haven't moved it will skip relocation processing alltogether. * If I915_EXEC_NO_RELOC is not supported, the kernel ignores the incoming * value of offset so we can set it either way. For that to work we need * to make sure all relocs use the same presumed offset. */ for (size_t i = 0; i < list->num_relocs; i++) { bo = list->reloc_bos[i]; if (bo->offset != list->relocs[i].presumed_offset) cmd_buffer->execbuf2.need_reloc = true; list->relocs[i].target_handle = bo->index; } } static uint64_t read_reloc(const struct anv_device *device, const void *p) { if (device->info.gen >= 8) return *(uint64_t *)p; else return *(uint32_t *)p; } static void write_reloc(const struct anv_device *device, void *p, uint64_t v) { if (device->info.gen >= 8) *(uint64_t *)p = v; else *(uint32_t *)p = v; } static void adjust_relocations_from_block_pool(struct anv_block_pool *pool, struct anv_reloc_list *relocs) { for (size_t i = 0; i < relocs->num_relocs; i++) { /* In general, we don't know how stale the relocated value is. It * may have been used last time or it may not. Since we don't want * to stomp it while the GPU may be accessing it, we haven't updated * it anywhere else in the code. Instead, we just set the presumed * offset to what it is now based on the delta and the data in the * block pool. Then the kernel will update it for us if needed. */ assert(relocs->relocs[i].offset < pool->state.end); const void *p = pool->map + relocs->relocs[i].offset; /* We're reading back the relocated value from potentially incoherent * memory here. However, any change to the value will be from the kernel * writing out relocations, which will keep the CPU cache up to date. */ relocs->relocs[i].presumed_offset = read_reloc(pool->device, p) - relocs->relocs[i].delta; /* All of the relocations from this block pool to other BO's should * have been emitted relative to the surface block pool center. We * need to add the center offset to make them relative to the * beginning of the actual GEM bo. */ relocs->relocs[i].offset += pool->center_bo_offset; } } static void adjust_relocations_to_block_pool(struct anv_block_pool *pool, struct anv_bo *from_bo, struct anv_reloc_list *relocs, uint32_t *last_pool_center_bo_offset) { assert(*last_pool_center_bo_offset <= pool->center_bo_offset); uint32_t delta = pool->center_bo_offset - *last_pool_center_bo_offset; /* When we initially emit relocations into a block pool, we don't * actually know what the final center_bo_offset will be so we just emit * it as if center_bo_offset == 0. Now that we know what the center * offset is, we need to walk the list of relocations and adjust any * relocations that point to the pool bo with the correct offset. */ for (size_t i = 0; i < relocs->num_relocs; i++) { if (relocs->reloc_bos[i] == &pool->bo) { /* Adjust the delta value in the relocation to correctly * correspond to the new delta. Initially, this value may have * been negative (if treated as unsigned), but we trust in * uint32_t roll-over to fix that for us at this point. */ relocs->relocs[i].delta += delta; /* Since the delta has changed, we need to update the actual * relocated value with the new presumed value. This function * should only be called on batch buffers, so we know it isn't in * use by the GPU at the moment. */ assert(relocs->relocs[i].offset < from_bo->size); write_reloc(pool->device, from_bo->map + relocs->relocs[i].offset, relocs->relocs[i].presumed_offset + relocs->relocs[i].delta); } } *last_pool_center_bo_offset = pool->center_bo_offset; } void anv_cmd_buffer_prepare_execbuf(struct anv_cmd_buffer *cmd_buffer) { struct anv_batch *batch = &cmd_buffer->batch; struct anv_block_pool *ss_pool = &cmd_buffer->device->surface_state_block_pool; cmd_buffer->execbuf2.bo_count = 0; cmd_buffer->execbuf2.need_reloc = false; adjust_relocations_from_block_pool(ss_pool, &cmd_buffer->surface_relocs); anv_cmd_buffer_add_bo(cmd_buffer, &ss_pool->bo, &cmd_buffer->surface_relocs); /* First, we walk over all of the bos we've seen and add them and their * relocations to the validate list. */ struct anv_batch_bo **bbo; anv_vector_foreach(bbo, &cmd_buffer->seen_bbos) { adjust_relocations_to_block_pool(ss_pool, &(*bbo)->bo, &(*bbo)->relocs, &(*bbo)->last_ss_pool_bo_offset); anv_cmd_buffer_add_bo(cmd_buffer, &(*bbo)->bo, &(*bbo)->relocs); } struct anv_batch_bo *first_batch_bo = list_first_entry(&cmd_buffer->batch_bos, struct anv_batch_bo, link); /* The kernel requires that the last entry in the validation list be the * batch buffer to execute. We can simply swap the element * corresponding to the first batch_bo in the chain with the last * element in the list. */ if (first_batch_bo->bo.index != cmd_buffer->execbuf2.bo_count - 1) { uint32_t idx = first_batch_bo->bo.index; uint32_t last_idx = cmd_buffer->execbuf2.bo_count - 1; struct drm_i915_gem_exec_object2 tmp_obj = cmd_buffer->execbuf2.objects[idx]; assert(cmd_buffer->execbuf2.bos[idx] == &first_batch_bo->bo); cmd_buffer->execbuf2.objects[idx] = cmd_buffer->execbuf2.objects[last_idx]; cmd_buffer->execbuf2.bos[idx] = cmd_buffer->execbuf2.bos[last_idx]; cmd_buffer->execbuf2.bos[idx]->index = idx; cmd_buffer->execbuf2.objects[last_idx] = tmp_obj; cmd_buffer->execbuf2.bos[last_idx] = &first_batch_bo->bo; first_batch_bo->bo.index = last_idx; } /* Now we go through and fixup all of the relocation lists to point to * the correct indices in the object array. We have to do this after we * reorder the list above as some of the indices may have changed. */ anv_vector_foreach(bbo, &cmd_buffer->seen_bbos) anv_cmd_buffer_process_relocs(cmd_buffer, &(*bbo)->relocs); anv_cmd_buffer_process_relocs(cmd_buffer, &cmd_buffer->surface_relocs); if (!cmd_buffer->device->info.has_llc) { __builtin_ia32_mfence(); anv_vector_foreach(bbo, &cmd_buffer->seen_bbos) { for (uint32_t i = 0; i < (*bbo)->length; i += CACHELINE_SIZE) __builtin_ia32_clflush((*bbo)->bo.map + i); } } cmd_buffer->execbuf2.execbuf = (struct drm_i915_gem_execbuffer2) { .buffers_ptr = (uintptr_t) cmd_buffer->execbuf2.objects, .buffer_count = cmd_buffer->execbuf2.bo_count, .batch_start_offset = 0, .batch_len = batch->next - batch->start, .cliprects_ptr = 0, .num_cliprects = 0, .DR1 = 0, .DR4 = 0, .flags = I915_EXEC_HANDLE_LUT | I915_EXEC_RENDER | I915_EXEC_CONSTANTS_REL_GENERAL, .rsvd1 = cmd_buffer->device->context_id, .rsvd2 = 0, }; if (!cmd_buffer->execbuf2.need_reloc) cmd_buffer->execbuf2.execbuf.flags |= I915_EXEC_NO_RELOC; }