/* * Copyright 2013 Advanced Micro Devices, Inc. * * 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 * on the rights to use, copy, modify, merge, publish, distribute, sub * license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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. * * Authors: * Marek Olšák */ #include "r600_cs.h" #include "util/u_memory.h" #include "util/u_upload_mgr.h" #include #include bool r600_rings_is_buffer_referenced(struct r600_common_context *ctx, struct pb_buffer *buf, enum radeon_bo_usage usage) { if (ctx->ws->cs_is_buffer_referenced(ctx->gfx.cs, buf, usage)) { return true; } if (radeon_emitted(ctx->dma.cs, 0) && ctx->ws->cs_is_buffer_referenced(ctx->dma.cs, buf, usage)) { return true; } return false; } void *r600_buffer_map_sync_with_rings(struct r600_common_context *ctx, struct r600_resource *resource, unsigned usage) { enum radeon_bo_usage rusage = RADEON_USAGE_READWRITE; bool busy = false; if (usage & PIPE_TRANSFER_UNSYNCHRONIZED) { return ctx->ws->buffer_map(resource->buf, NULL, usage); } if (!(usage & PIPE_TRANSFER_WRITE)) { /* have to wait for the last write */ rusage = RADEON_USAGE_WRITE; } if (radeon_emitted(ctx->gfx.cs, ctx->initial_gfx_cs_size) && ctx->ws->cs_is_buffer_referenced(ctx->gfx.cs, resource->buf, rusage)) { if (usage & PIPE_TRANSFER_DONTBLOCK) { ctx->gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL); return NULL; } else { ctx->gfx.flush(ctx, 0, NULL); busy = true; } } if (radeon_emitted(ctx->dma.cs, 0) && ctx->ws->cs_is_buffer_referenced(ctx->dma.cs, resource->buf, rusage)) { if (usage & PIPE_TRANSFER_DONTBLOCK) { ctx->dma.flush(ctx, RADEON_FLUSH_ASYNC, NULL); return NULL; } else { ctx->dma.flush(ctx, 0, NULL); busy = true; } } if (busy || !ctx->ws->buffer_wait(resource->buf, 0, rusage)) { if (usage & PIPE_TRANSFER_DONTBLOCK) { return NULL; } else { /* We will be wait for the GPU. Wait for any offloaded * CS flush to complete to avoid busy-waiting in the winsys. */ ctx->ws->cs_sync_flush(ctx->gfx.cs); if (ctx->dma.cs) ctx->ws->cs_sync_flush(ctx->dma.cs); } } /* Setting the CS to NULL will prevent doing checks we have done already. */ return ctx->ws->buffer_map(resource->buf, NULL, usage); } void r600_init_resource_fields(struct r600_common_screen *rscreen, struct r600_resource *res, uint64_t size, unsigned alignment) { struct r600_texture *rtex = (struct r600_texture*)res; res->bo_size = size; res->bo_alignment = alignment; res->flags = 0; switch (res->b.b.usage) { case PIPE_USAGE_STREAM: res->flags = RADEON_FLAG_GTT_WC; /* fall through */ case PIPE_USAGE_STAGING: /* Transfers are likely to occur more often with these * resources. */ res->domains = RADEON_DOMAIN_GTT; break; case PIPE_USAGE_DYNAMIC: /* Older kernels didn't always flush the HDP cache before * CS execution */ if (rscreen->info.drm_major == 2 && rscreen->info.drm_minor < 40) { res->domains = RADEON_DOMAIN_GTT; res->flags |= RADEON_FLAG_GTT_WC; break; } res->flags |= RADEON_FLAG_CPU_ACCESS; /* fall through */ case PIPE_USAGE_DEFAULT: case PIPE_USAGE_IMMUTABLE: default: /* Not listing GTT here improves performance in some * apps. */ res->domains = RADEON_DOMAIN_VRAM; res->flags |= RADEON_FLAG_GTT_WC; break; } if (res->b.b.target == PIPE_BUFFER && res->b.b.flags & (PIPE_RESOURCE_FLAG_MAP_PERSISTENT | PIPE_RESOURCE_FLAG_MAP_COHERENT)) { /* Use GTT for all persistent mappings with older * kernels, because they didn't always flush the HDP * cache before CS execution. * * Write-combined CPU mappings are fine, the kernel * ensures all CPU writes finish before the GPU * executes a command stream. */ if (rscreen->info.drm_major == 2 && rscreen->info.drm_minor < 40) res->domains = RADEON_DOMAIN_GTT; else if (res->domains & RADEON_DOMAIN_VRAM) res->flags |= RADEON_FLAG_CPU_ACCESS; } /* Tiled textures are unmappable. Always put them in VRAM. */ if ((res->b.b.target != PIPE_BUFFER && !rtex->surface.is_linear) || res->flags & R600_RESOURCE_FLAG_UNMAPPABLE) { res->domains = RADEON_DOMAIN_VRAM; res->flags &= ~RADEON_FLAG_CPU_ACCESS; res->flags |= RADEON_FLAG_NO_CPU_ACCESS | RADEON_FLAG_GTT_WC; } /* If VRAM is just stolen system memory, allow both VRAM and * GTT, whichever has free space. If a buffer is evicted from * VRAM to GTT, it will stay there. * * DRM 3.6.0 has good BO move throttling, so we can allow VRAM-only * placements even with a low amount of stolen VRAM. */ if (!rscreen->info.has_dedicated_vram && (rscreen->info.drm_major < 3 || rscreen->info.drm_minor < 6) && res->domains == RADEON_DOMAIN_VRAM) res->domains = RADEON_DOMAIN_VRAM_GTT; if (rscreen->debug_flags & DBG_NO_WC) res->flags &= ~RADEON_FLAG_GTT_WC; /* Set expected VRAM and GART usage for the buffer. */ res->vram_usage = 0; res->gart_usage = 0; if (res->domains & RADEON_DOMAIN_VRAM) res->vram_usage = size; else if (res->domains & RADEON_DOMAIN_GTT) res->gart_usage = size; } bool r600_alloc_resource(struct r600_common_screen *rscreen, struct r600_resource *res) { struct pb_buffer *old_buf, *new_buf; /* Allocate a new resource. */ new_buf = rscreen->ws->buffer_create(rscreen->ws, res->bo_size, res->bo_alignment, res->domains, res->flags); if (!new_buf) { return false; } /* Replace the pointer such that if res->buf wasn't NULL, it won't be * NULL. This should prevent crashes with multiple contexts using * the same buffer where one of the contexts invalidates it while * the others are using it. */ old_buf = res->buf; res->buf = new_buf; /* should be atomic */ if (rscreen->info.has_virtual_memory) res->gpu_address = rscreen->ws->buffer_get_virtual_address(res->buf); else res->gpu_address = 0; pb_reference(&old_buf, NULL); util_range_set_empty(&res->valid_buffer_range); res->TC_L2_dirty = false; /* Print debug information. */ if (rscreen->debug_flags & DBG_VM && res->b.b.target == PIPE_BUFFER) { fprintf(stderr, "VM start=0x%"PRIX64" end=0x%"PRIX64" | Buffer %"PRIu64" bytes\n", res->gpu_address, res->gpu_address + res->buf->size, res->buf->size); } return true; } static void r600_buffer_destroy(struct pipe_screen *screen, struct pipe_resource *buf) { struct r600_resource *rbuffer = r600_resource(buf); util_range_destroy(&rbuffer->valid_buffer_range); pb_reference(&rbuffer->buf, NULL); FREE(rbuffer); } static bool r600_invalidate_buffer(struct r600_common_context *rctx, struct r600_resource *rbuffer) { /* Shared buffers can't be reallocated. */ if (rbuffer->is_shared) return false; /* In AMD_pinned_memory, the user pointer association only gets * broken when the buffer is explicitly re-allocated. */ if (rctx->ws->buffer_is_user_ptr(rbuffer->buf)) return false; /* Check if mapping this buffer would cause waiting for the GPU. */ if (r600_rings_is_buffer_referenced(rctx, rbuffer->buf, RADEON_USAGE_READWRITE) || !rctx->ws->buffer_wait(rbuffer->buf, 0, RADEON_USAGE_READWRITE)) { rctx->invalidate_buffer(&rctx->b, &rbuffer->b.b); } else { util_range_set_empty(&rbuffer->valid_buffer_range); } return true; } void r600_invalidate_resource(struct pipe_context *ctx, struct pipe_resource *resource) { struct r600_common_context *rctx = (struct r600_common_context*)ctx; struct r600_resource *rbuffer = r600_resource(resource); /* We currently only do anyting here for buffers */ if (resource->target == PIPE_BUFFER) (void)r600_invalidate_buffer(rctx, rbuffer); } static void *r600_buffer_get_transfer(struct pipe_context *ctx, struct pipe_resource *resource, unsigned usage, const struct pipe_box *box, struct pipe_transfer **ptransfer, void *data, struct r600_resource *staging, unsigned offset) { struct r600_common_context *rctx = (struct r600_common_context*)ctx; struct r600_transfer *transfer = slab_alloc(&rctx->pool_transfers); transfer->transfer.resource = resource; transfer->transfer.level = 0; transfer->transfer.usage = usage; transfer->transfer.box = *box; transfer->transfer.stride = 0; transfer->transfer.layer_stride = 0; transfer->offset = offset; transfer->staging = staging; *ptransfer = &transfer->transfer; return data; } static bool r600_can_dma_copy_buffer(struct r600_common_context *rctx, unsigned dstx, unsigned srcx, unsigned size) { bool dword_aligned = !(dstx % 4) && !(srcx % 4) && !(size % 4); return rctx->screen->has_cp_dma || (dword_aligned && (rctx->dma.cs || rctx->screen->has_streamout)); } static void *r600_buffer_transfer_map(struct pipe_context *ctx, struct pipe_resource *resource, unsigned level, unsigned usage, const struct pipe_box *box, struct pipe_transfer **ptransfer) { struct r600_common_context *rctx = (struct r600_common_context*)ctx; struct r600_common_screen *rscreen = (struct r600_common_screen*)ctx->screen; struct r600_resource *rbuffer = r600_resource(resource); uint8_t *data; assert(box->x + box->width <= resource->width0); /* See if the buffer range being mapped has never been initialized, * in which case it can be mapped unsynchronized. */ if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED) && usage & PIPE_TRANSFER_WRITE && !rbuffer->is_shared && !util_ranges_intersect(&rbuffer->valid_buffer_range, box->x, box->x + box->width)) { usage |= PIPE_TRANSFER_UNSYNCHRONIZED; } /* If discarding the entire range, discard the whole resource instead. */ if (usage & PIPE_TRANSFER_DISCARD_RANGE && box->x == 0 && box->width == resource->width0) { usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE; } if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE && !(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) { assert(usage & PIPE_TRANSFER_WRITE); if (r600_invalidate_buffer(rctx, rbuffer)) { /* At this point, the buffer is always idle. */ usage |= PIPE_TRANSFER_UNSYNCHRONIZED; } else { /* Fall back to a temporary buffer. */ usage |= PIPE_TRANSFER_DISCARD_RANGE; } } if ((usage & PIPE_TRANSFER_DISCARD_RANGE) && !(usage & (PIPE_TRANSFER_UNSYNCHRONIZED | PIPE_TRANSFER_PERSISTENT)) && !(rscreen->debug_flags & DBG_NO_DISCARD_RANGE) && r600_can_dma_copy_buffer(rctx, box->x, 0, box->width)) { assert(usage & PIPE_TRANSFER_WRITE); /* Check if mapping this buffer would cause waiting for the GPU. */ if (r600_rings_is_buffer_referenced(rctx, rbuffer->buf, RADEON_USAGE_READWRITE) || !rctx->ws->buffer_wait(rbuffer->buf, 0, RADEON_USAGE_READWRITE)) { /* Do a wait-free write-only transfer using a temporary buffer. */ unsigned offset; struct r600_resource *staging = NULL; u_upload_alloc(ctx->stream_uploader, 0, box->width + (box->x % R600_MAP_BUFFER_ALIGNMENT), rctx->screen->info.tcc_cache_line_size, &offset, (struct pipe_resource**)&staging, (void**)&data); if (staging) { data += box->x % R600_MAP_BUFFER_ALIGNMENT; return r600_buffer_get_transfer(ctx, resource, usage, box, ptransfer, data, staging, offset); } } else { /* At this point, the buffer is always idle (we checked it above). */ usage |= PIPE_TRANSFER_UNSYNCHRONIZED; } } /* Use a staging buffer in cached GTT for reads. */ else if ((usage & PIPE_TRANSFER_READ) && !(usage & PIPE_TRANSFER_PERSISTENT) && (rbuffer->domains & RADEON_DOMAIN_VRAM || rbuffer->flags & RADEON_FLAG_GTT_WC) && r600_can_dma_copy_buffer(rctx, 0, box->x, box->width)) { struct r600_resource *staging; staging = (struct r600_resource*) pipe_buffer_create( ctx->screen, 0, PIPE_USAGE_STAGING, box->width + (box->x % R600_MAP_BUFFER_ALIGNMENT)); if (staging) { /* Copy the VRAM buffer to the staging buffer. */ rctx->dma_copy(ctx, &staging->b.b, 0, box->x % R600_MAP_BUFFER_ALIGNMENT, 0, 0, resource, 0, box); data = r600_buffer_map_sync_with_rings(rctx, staging, usage & ~PIPE_TRANSFER_UNSYNCHRONIZED); if (!data) { r600_resource_reference(&staging, NULL); return NULL; } data += box->x % R600_MAP_BUFFER_ALIGNMENT; return r600_buffer_get_transfer(ctx, resource, usage, box, ptransfer, data, staging, 0); } } data = r600_buffer_map_sync_with_rings(rctx, rbuffer, usage); if (!data) { return NULL; } data += box->x; return r600_buffer_get_transfer(ctx, resource, usage, box, ptransfer, data, NULL, 0); } static void r600_buffer_do_flush_region(struct pipe_context *ctx, struct pipe_transfer *transfer, const struct pipe_box *box) { struct r600_transfer *rtransfer = (struct r600_transfer*)transfer; struct r600_resource *rbuffer = r600_resource(transfer->resource); if (rtransfer->staging) { struct pipe_resource *dst, *src; unsigned soffset; struct pipe_box dma_box; dst = transfer->resource; src = &rtransfer->staging->b.b; soffset = rtransfer->offset + box->x % R600_MAP_BUFFER_ALIGNMENT; u_box_1d(soffset, box->width, &dma_box); /* Copy the staging buffer into the original one. */ ctx->resource_copy_region(ctx, dst, 0, box->x, 0, 0, src, 0, &dma_box); } util_range_add(&rbuffer->valid_buffer_range, box->x, box->x + box->width); } static void r600_buffer_flush_region(struct pipe_context *ctx, struct pipe_transfer *transfer, const struct pipe_box *rel_box) { if (transfer->usage & (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT)) { struct pipe_box box; u_box_1d(transfer->box.x + rel_box->x, rel_box->width, &box); r600_buffer_do_flush_region(ctx, transfer, &box); } } static void r600_buffer_transfer_unmap(struct pipe_context *ctx, struct pipe_transfer *transfer) { struct r600_common_context *rctx = (struct r600_common_context*)ctx; struct r600_transfer *rtransfer = (struct r600_transfer*)transfer; if (transfer->usage & PIPE_TRANSFER_WRITE && !(transfer->usage & PIPE_TRANSFER_FLUSH_EXPLICIT)) r600_buffer_do_flush_region(ctx, transfer, &transfer->box); if (rtransfer->staging) r600_resource_reference(&rtransfer->staging, NULL); slab_free(&rctx->pool_transfers, transfer); } void r600_buffer_subdata(struct pipe_context *ctx, struct pipe_resource *buffer, unsigned usage, unsigned offset, unsigned size, const void *data) { struct pipe_transfer *transfer = NULL; struct pipe_box box; uint8_t *map = NULL; u_box_1d(offset, size, &box); map = r600_buffer_transfer_map(ctx, buffer, 0, PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE | usage, &box, &transfer); if (!map) return; memcpy(map, data, size); r600_buffer_transfer_unmap(ctx, transfer); } static const struct u_resource_vtbl r600_buffer_vtbl = { NULL, /* get_handle */ r600_buffer_destroy, /* resource_destroy */ r600_buffer_transfer_map, /* transfer_map */ r600_buffer_flush_region, /* transfer_flush_region */ r600_buffer_transfer_unmap, /* transfer_unmap */ }; static struct r600_resource * r600_alloc_buffer_struct(struct pipe_screen *screen, const struct pipe_resource *templ) { struct r600_resource *rbuffer; rbuffer = MALLOC_STRUCT(r600_resource); rbuffer->b.b = *templ; rbuffer->b.b.next = NULL; pipe_reference_init(&rbuffer->b.b.reference, 1); rbuffer->b.b.screen = screen; rbuffer->b.vtbl = &r600_buffer_vtbl; rbuffer->buf = NULL; rbuffer->bind_history = 0; rbuffer->TC_L2_dirty = false; rbuffer->is_shared = false; util_range_init(&rbuffer->valid_buffer_range); return rbuffer; } struct pipe_resource *r600_buffer_create(struct pipe_screen *screen, const struct pipe_resource *templ, unsigned alignment) { struct r600_common_screen *rscreen = (struct r600_common_screen*)screen; struct r600_resource *rbuffer = r600_alloc_buffer_struct(screen, templ); r600_init_resource_fields(rscreen, rbuffer, templ->width0, alignment); if (templ->bind & PIPE_BIND_SHARED) rbuffer->flags |= RADEON_FLAG_HANDLE; if (!r600_alloc_resource(rscreen, rbuffer)) { FREE(rbuffer); return NULL; } return &rbuffer->b.b; } struct pipe_resource *r600_aligned_buffer_create(struct pipe_screen *screen, unsigned flags, unsigned usage, unsigned size, unsigned alignment) { struct pipe_resource buffer; memset(&buffer, 0, sizeof buffer); buffer.target = PIPE_BUFFER; buffer.format = PIPE_FORMAT_R8_UNORM; buffer.bind = 0; buffer.usage = usage; buffer.flags = flags; buffer.width0 = size; buffer.height0 = 1; buffer.depth0 = 1; buffer.array_size = 1; return r600_buffer_create(screen, &buffer, alignment); } struct pipe_resource * r600_buffer_from_user_memory(struct pipe_screen *screen, const struct pipe_resource *templ, void *user_memory) { struct r600_common_screen *rscreen = (struct r600_common_screen*)screen; struct radeon_winsys *ws = rscreen->ws; struct r600_resource *rbuffer = r600_alloc_buffer_struct(screen, templ); rbuffer->domains = RADEON_DOMAIN_GTT; util_range_add(&rbuffer->valid_buffer_range, 0, templ->width0); /* Convert a user pointer to a buffer. */ rbuffer->buf = ws->buffer_from_ptr(ws, user_memory, templ->width0); if (!rbuffer->buf) { FREE(rbuffer); return NULL; } if (rscreen->info.has_virtual_memory) rbuffer->gpu_address = ws->buffer_get_virtual_address(rbuffer->buf); else rbuffer->gpu_address = 0; return &rbuffer->b.b; }