diff options
Diffstat (limited to 'src/gallium/drivers/radeonsi')
| -rw-r--r-- | src/gallium/drivers/radeonsi/Makefile.sources | 1 | ||||
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_dma_cs.c | 149 | ||||
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_pipe.h | 7 |
3 files changed, 157 insertions, 0 deletions
diff --git a/src/gallium/drivers/radeonsi/Makefile.sources b/src/gallium/drivers/radeonsi/Makefile.sources index 964be017fb2..be9c171f419 100644 --- a/src/gallium/drivers/radeonsi/Makefile.sources +++ b/src/gallium/drivers/radeonsi/Makefile.sources @@ -13,6 +13,7 @@ C_SOURCES := \ si_debug.c \ si_descriptors.c \ si_dma.c \ + si_dma_cs.c \ si_fence.c \ si_get.c \ si_gfx_cs.c \ diff --git a/src/gallium/drivers/radeonsi/si_dma_cs.c b/src/gallium/drivers/radeonsi/si_dma_cs.c new file mode 100644 index 00000000000..831c096629e --- /dev/null +++ b/src/gallium/drivers/radeonsi/si_dma_cs.c @@ -0,0 +1,149 @@ +/* + * Copyright 2018 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. + */ + +#include "si_pipe.h" +#include "radeon/r600_cs.h" + +static void si_dma_emit_wait_idle(struct r600_common_context *rctx) +{ + struct radeon_winsys_cs *cs = rctx->dma.cs; + + /* NOP waits for idle on Evergreen and later. */ + if (rctx->chip_class >= CIK) + radeon_emit(cs, 0x00000000); /* NOP */ + else + radeon_emit(cs, 0xf0000000); /* NOP */ +} + +void si_need_dma_space(struct r600_common_context *ctx, unsigned num_dw, + struct r600_resource *dst, struct r600_resource *src) +{ + uint64_t vram = ctx->dma.cs->used_vram; + uint64_t gtt = ctx->dma.cs->used_gart; + + if (dst) { + vram += dst->vram_usage; + gtt += dst->gart_usage; + } + if (src) { + vram += src->vram_usage; + gtt += src->gart_usage; + } + + /* Flush the GFX IB if DMA depends on it. */ + if (radeon_emitted(ctx->gfx.cs, ctx->initial_gfx_cs_size) && + ((dst && + ctx->ws->cs_is_buffer_referenced(ctx->gfx.cs, dst->buf, + RADEON_USAGE_READWRITE)) || + (src && + ctx->ws->cs_is_buffer_referenced(ctx->gfx.cs, src->buf, + RADEON_USAGE_WRITE)))) + si_flush_gfx_cs(ctx, PIPE_FLUSH_ASYNC, NULL); + + /* Flush if there's not enough space, or if the memory usage per IB + * is too large. + * + * IBs using too little memory are limited by the IB submission overhead. + * IBs using too much memory are limited by the kernel/TTM overhead. + * Too long IBs create CPU-GPU pipeline bubbles and add latency. + * + * This heuristic makes sure that DMA requests are executed + * very soon after the call is made and lowers memory usage. + * It improves texture upload performance by keeping the DMA + * engine busy while uploads are being submitted. + */ + num_dw++; /* for emit_wait_idle below */ + if (!ctx->ws->cs_check_space(ctx->dma.cs, num_dw) || + ctx->dma.cs->used_vram + ctx->dma.cs->used_gart > 64 * 1024 * 1024 || + !radeon_cs_memory_below_limit(ctx->screen, ctx->dma.cs, vram, gtt)) { + si_flush_dma_cs(ctx, PIPE_FLUSH_ASYNC, NULL); + assert((num_dw + ctx->dma.cs->current.cdw) <= ctx->dma.cs->current.max_dw); + } + + /* Wait for idle if either buffer has been used in the IB before to + * prevent read-after-write hazards. + */ + if ((dst && + ctx->ws->cs_is_buffer_referenced(ctx->dma.cs, dst->buf, + RADEON_USAGE_READWRITE)) || + (src && + ctx->ws->cs_is_buffer_referenced(ctx->dma.cs, src->buf, + RADEON_USAGE_WRITE))) + si_dma_emit_wait_idle(ctx); + + if (dst) { + radeon_add_to_buffer_list(ctx, &ctx->dma, dst, + RADEON_USAGE_WRITE, + RADEON_PRIO_SDMA_BUFFER); + } + if (src) { + radeon_add_to_buffer_list(ctx, &ctx->dma, src, + RADEON_USAGE_READ, + RADEON_PRIO_SDMA_BUFFER); + } + + /* this function is called before all DMA calls, so increment this. */ + ctx->num_dma_calls++; +} + +void si_flush_dma_cs(void *ctx, unsigned flags, struct pipe_fence_handle **fence) +{ + struct r600_common_context *rctx = (struct r600_common_context *)ctx; + struct radeon_winsys_cs *cs = rctx->dma.cs; + struct radeon_saved_cs saved; + bool check_vm = (rctx->screen->debug_flags & DBG(CHECK_VM)); + + if (!radeon_emitted(cs, 0)) { + if (fence) + rctx->ws->fence_reference(fence, rctx->last_sdma_fence); + return; + } + + if (check_vm) + si_save_cs(rctx->ws, cs, &saved, true); + + rctx->ws->cs_flush(cs, flags, &rctx->last_sdma_fence); + if (fence) + rctx->ws->fence_reference(fence, rctx->last_sdma_fence); + + if (check_vm) { + /* Use conservative timeout 800ms, after which we won't wait any + * longer and assume the GPU is hung. + */ + rctx->ws->fence_wait(rctx->ws, rctx->last_sdma_fence, 800*1000*1000); + + si_check_vm_faults(rctx, &saved, RING_DMA); + si_clear_saved_cs(&saved); + } +} + +void si_screen_clear_buffer(struct si_screen *sscreen, struct pipe_resource *dst, + uint64_t offset, uint64_t size, unsigned value) +{ + struct r600_common_context *rctx = (struct r600_common_context*)sscreen->aux_context; + + mtx_lock(&sscreen->aux_context_lock); + rctx->dma_clear_buffer(&rctx->b, dst, offset, size, value); + sscreen->aux_context->flush(sscreen->aux_context, NULL, 0); + mtx_unlock(&sscreen->aux_context_lock); +} diff --git a/src/gallium/drivers/radeonsi/si_pipe.h b/src/gallium/drivers/radeonsi/si_pipe.h index 5cc28690937..371ab5b5be9 100644 --- a/src/gallium/drivers/radeonsi/si_pipe.h +++ b/src/gallium/drivers/radeonsi/si_pipe.h @@ -718,6 +718,13 @@ bool si_replace_shader(unsigned num, struct ac_shader_binary *binary); /* si_dma.c */ void si_init_dma_functions(struct si_context *sctx); +/* si_dma_cs.c */ +void si_need_dma_space(struct r600_common_context *ctx, unsigned num_dw, + struct r600_resource *dst, struct r600_resource *src); +void si_flush_dma_cs(void *ctx, unsigned flags, struct pipe_fence_handle **fence); +void si_screen_clear_buffer(struct si_screen *sscreen, struct pipe_resource *dst, + uint64_t offset, uint64_t size, unsigned value); + /* si_fence.c */ void si_gfx_write_event_eop(struct r600_common_context *ctx, unsigned event, unsigned event_flags, |