radv/gfx10: use L2 for DMA copy/fill operations

[mesa.git] / src / amd / vulkan / si_cmd_buffer.c

diff --git a/src/amd/vulkan/si_cmd_buffer.c b/src/amd/vulkan/si_cmd_buffer.c
index 21a90cb251493b5e04b59decda83a70ba5f5e57f..94f759139ee54340a8f49cdb42abf773d182c4c6 100644 (file)
--- a/src/amd/vulkan/si_cmd_buffer.c
+++ b/src/amd/vulkan/si_cmd_buffer.c
@@ -1501,6 +1501,14 @@ void si_cp_dma_buffer_copy(struct radv_cmd_buffer *cmd_buffer,
                unsigned dma_flags = 0;
                unsigned byte_count = MIN2(size, cp_dma_max_byte_count(cmd_buffer));
 
+               if (cmd_buffer->device->physical_device->rad_info.chip_class >= GFX10) {
+                       /* DMA operations via L2 are coherent and faster.
+                        * TODO: GFX7-GFX9 should also support this but it
+                        * requires tests/benchmarks.
+                        */
+                       dma_flags |= CP_DMA_USE_L2;
+               }
+
                si_cp_dma_prepare(cmd_buffer, byte_count,
                                  size + skipped_size + realign_size,
                                  &dma_flags);
@@ -1545,6 +1553,14 @@ void si_cp_dma_clear_buffer(struct radv_cmd_buffer *cmd_buffer, uint64_t va,
                unsigned byte_count = MIN2(size, cp_dma_max_byte_count(cmd_buffer));
                unsigned dma_flags = CP_DMA_CLEAR;
 
+               if (cmd_buffer->device->physical_device->rad_info.chip_class >= GFX10) {
+                       /* DMA operations via L2 are coherent and faster.
+                        * TODO: GFX7-GFX9 should also support this but it
+                        * requires tests/benchmarks.
+                        */
+                       dma_flags |= CP_DMA_USE_L2;
+               }
+
                si_cp_dma_prepare(cmd_buffer, byte_count, size, &dma_flags);
 
                /* Emit the clear packet. */