radv: set BIG_PAGE to improve performance on GFX10.3

It reduces traffic between CB, DB and TCP blocks if buffers
respect a certain alignment.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6482>

diff --git a/src/amd/vulkan/radv_cmd_buffer.c b/src/amd/vulkan/radv_cmd_buffer.c
index f6c053cb0ad9e302722e7ba2bd561241dfb0eec9..873549677c505d4be9f0ee546d02d0e7969916cd 100644 (file)
--- a/src/amd/vulkan/radv_cmd_buffer.c
+++ b/src/amd/vulkan/radv_cmd_buffer.c
@@ -1747,6 +1747,9 @@ radv_emit_fb_ds_state(struct radv_cmd_buffer *cmd_buffer,
                        meta_read_policy =  V_02807C_CACHE_NOA_RD;    /* don't cache reads */
                }
 
+               bool zs_big_page = cmd_buffer->device->physical_device->rad_info.chip_class >= GFX10_3 &&
+                                  (image->alignment % (64 * 1024) == 0);
+
                radeon_set_context_reg(cmd_buffer->cs, R_028014_DB_HTILE_DATA_BASE, ds->db_htile_data_base);
                radeon_set_context_reg(cmd_buffer->cs, R_02801C_DB_DEPTH_SIZE_XY, ds->db_depth_size);
 
@@ -1772,7 +1775,9 @@ radv_emit_fb_ds_state(struct radv_cmd_buffer *cmd_buffer,
                            S_02807C_ZPCPSD_WR_POLICY(V_02807C_CACHE_STREAM_WR) |
                            S_02807C_Z_RD_POLICY(V_02807C_CACHE_NOA_RD) |
                            S_02807C_S_RD_POLICY(V_02807C_CACHE_NOA_RD) |
-                           S_02807C_HTILE_RD_POLICY(meta_read_policy));
+                           S_02807C_HTILE_RD_POLICY(meta_read_policy) |
+                           S_02807C_Z_BIG_PAGE(zs_big_page) |
+                           S_02807C_S_BIG_PAGE(zs_big_page));
        } else if (cmd_buffer->device->physical_device->rad_info.chip_class == GFX9) {
                radeon_set_context_reg_seq(cmd_buffer->cs, R_028014_DB_HTILE_DATA_BASE, 3);
                radeon_emit(cmd_buffer->cs, ds->db_htile_data_base);
@@ -2247,6 +2252,7 @@ radv_emit_framebuffer_state(struct radv_cmd_buffer *cmd_buffer)
        int i;
        struct radv_framebuffer *framebuffer = cmd_buffer->state.framebuffer;
        const struct radv_subpass *subpass = cmd_buffer->state.subpass;
+       bool color_big_page = true;
 
        /* this may happen for inherited secondary recording */
        if (!framebuffer)
@@ -2271,6 +2277,12 @@ radv_emit_framebuffer_state(struct radv_cmd_buffer *cmd_buffer)
                radv_emit_fb_color_state(cmd_buffer, i, &cmd_buffer->state.attachments[idx].cb, iview, layout, in_render_loop);
 
                radv_load_color_clear_metadata(cmd_buffer, iview, i);
+
+               /* BIG_PAGE is an optimization that can only be enabled if all
+                * color targets are compatible.
+                */
+               color_big_page &= cmd_buffer->device->physical_device->rad_info.chip_class >= GFX10_3 &&
+                                 (iview->image->alignment % (64 * 1024) == 0);
        }
 
        if (subpass->depth_stencil_attachment) {
@@ -2333,7 +2345,9 @@ radv_emit_framebuffer_state(struct radv_cmd_buffer *cmd_buffer)
                                       S_028410_CMASK_RD_POLICY(meta_read_policy) |
                                       S_028410_FMASK_RD_POLICY(meta_read_policy) |
                                       S_028410_DCC_RD_POLICY(meta_read_policy) |
-                                      S_028410_COLOR_RD_POLICY(V_028410_CACHE_NOA_RD));
+                                      S_028410_COLOR_RD_POLICY(V_028410_CACHE_NOA_RD) |
+                                      S_028410_FMASK_BIG_PAGE(color_big_page) |
+                                      S_028410_COLOR_BIG_PAGE(color_big_page));
        }
 
        if (cmd_buffer->device->dfsm_allowed) {

diff --git a/src/amd/vulkan/radv_image.c b/src/amd/vulkan/radv_image.c
index f4ef4fab77806c24da3002cb7668e61f63d3e37a..a6f64009e7c3719a7f34838c18316b049044a8c6 100644 (file)
--- a/src/amd/vulkan/radv_image.c
+++ b/src/amd/vulkan/radv_image.c
@@ -842,7 +842,9 @@ gfx10_make_texture_descriptor(struct radv_device *device,
                   S_00A014_MAX_MIP(image->info.samples > 1 ?
                                    util_logbase2(image->info.samples) :
                                    image->info.levels - 1) |
-                  S_00A014_PERF_MOD(4);
+                  S_00A014_PERF_MOD(4) |
+                  S_00A014_BIG_PAGE(device->physical_device->rad_info.chip_class >= GFX10_3 &&
+                                    image->alignment % (64 * 1024) == 0);
        state[6] = 0;
        state[7] = 0;