src/gallium/drivers/iris/iris_blorp.c

   1 /*
   2  * Copyright © 2018 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included
  12  * in all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  15  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20  * DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 /**
  24  * @file iris_blorp.c
  25  *
  26  * ============================= GENXML CODE =============================
  27  *              [This file is compiled once per generation.]
  28  * =======================================================================
  29  *
  30  * GenX specific code for working with BLORP (blitting, resolves, clears
  31  * on the 3D engine).  This provides the driver-specific hooks needed to
  32  * implement the BLORP API.
  33  *
  34  * See iris_blit.c, iris_clear.c, and so on.
  35  */
  36
  37 #include <assert.h>
  38
  39 #include "iris_batch.h"
  40 #include "iris_resource.h"
  41 #include "iris_context.h"
  42
  43 #include "util/u_upload_mgr.h"
  44 #include "intel/common/gen_l3_config.h"
  45
  46 #define BLORP_USE_SOFTPIN
  47 #include "blorp/blorp_genX_exec.h"
  48
  49 static uint32_t *
  50 stream_state(struct iris_batch *batch,
  51              struct u_upload_mgr *uploader,
  52              unsigned size,
  53              unsigned alignment,
  54              uint32_t *out_offset,
  55              struct iris_bo **out_bo)
  56 {
  57    struct pipe_resource *res = NULL;
  58    void *ptr = NULL;
  59
  60    u_upload_alloc(uploader, 0, size, alignment, out_offset, &res, &ptr);
  61
  62    struct iris_bo *bo = iris_resource_bo(res);
  63    iris_use_pinned_bo(batch, bo, false);
  64
  65    iris_record_state_size(batch->state_sizes,
  66                           bo->gtt_offset + *out_offset, size);
  67
  68    /* If the caller has asked for a BO, we leave them the responsibility of
  69     * adding bo->gtt_offset (say, by handing an address to genxml).  If not,
  70     * we assume they want the offset from a base address.
  71     */
  72    if (out_bo)
  73       *out_bo = bo;
  74    else
  75       *out_offset += iris_bo_offset_from_base_address(bo);
  76
  77    pipe_resource_reference(&res, NULL);
  78
  79    return ptr;
  80 }
  81
  82 static void *
  83 blorp_emit_dwords(struct blorp_batch *blorp_batch, unsigned n)
  84 {
  85    struct iris_batch *batch = blorp_batch->driver_batch;
  86    return iris_get_command_space(batch, n * sizeof(uint32_t));
  87 }
  88
  89 static uint64_t
  90 combine_and_pin_address(struct blorp_batch *blorp_batch,
  91                         struct blorp_address addr)
  92 {
  93    struct iris_batch *batch = blorp_batch->driver_batch;
  94    struct iris_bo *bo = addr.buffer;
  95
  96    iris_use_pinned_bo(batch, bo, addr.reloc_flags & RELOC_WRITE);
  97
  98    /* Assume this is a general address, not relative to a base. */
  99    return bo->gtt_offset + addr.offset;
 100 }
 101
 102 static uint64_t
 103 blorp_emit_reloc(struct blorp_batch *blorp_batch, UNUSED void *location,
 104                  struct blorp_address addr, uint32_t delta)
 105 {
 106    return combine_and_pin_address(blorp_batch, addr) + delta;
 107 }
 108
 109 static void
 110 blorp_surface_reloc(struct blorp_batch *blorp_batch, uint32_t ss_offset,
 111                     struct blorp_address addr, uint32_t delta)
 112 {
 113    /* Let blorp_get_surface_address do the pinning. */
 114 }
 115
 116 static uint64_t
 117 blorp_get_surface_address(struct blorp_batch *blorp_batch,
 118                           struct blorp_address addr)
 119 {
 120    return combine_and_pin_address(blorp_batch, addr);
 121 }
 122
 123 UNUSED static struct blorp_address
 124 blorp_get_surface_base_address(UNUSED struct blorp_batch *blorp_batch)
 125 {
 126    return (struct blorp_address) { .offset = IRIS_MEMZONE_BINDER_START };
 127 }
 128
 129 static void *
 130 blorp_alloc_dynamic_state(struct blorp_batch *blorp_batch,
 131                           uint32_t size,
 132                           uint32_t alignment,
 133                           uint32_t *offset)
 134 {
 135    struct iris_context *ice = blorp_batch->blorp->driver_ctx;
 136    struct iris_batch *batch = blorp_batch->driver_batch;
 137
 138    return stream_state(batch, ice->state.dynamic_uploader,
 139                        size, alignment, offset, NULL);
 140 }
 141
 142 static void
 143 blorp_alloc_binding_table(struct blorp_batch *blorp_batch,
 144                           unsigned num_entries,
 145                           unsigned state_size,
 146                           unsigned state_alignment,
 147                           uint32_t *bt_offset,
 148                           uint32_t *surface_offsets,
 149                           void **surface_maps)
 150 {
 151    struct iris_context *ice = blorp_batch->blorp->driver_ctx;
 152    struct iris_binder *binder = &ice->state.binder;
 153    struct iris_batch *batch = blorp_batch->driver_batch;
 154
 155    *bt_offset = iris_binder_reserve(ice, num_entries * sizeof(uint32_t));
 156    uint32_t *bt_map = binder->map + *bt_offset;
 157
 158    for (unsigned i = 0; i < num_entries; i++) {
 159       surface_maps[i] = stream_state(batch, ice->state.surface_uploader,
 160                                      state_size, state_alignment,
 161                                      &surface_offsets[i], NULL);
 162       bt_map[i] = surface_offsets[i] - (uint32_t) binder->bo->gtt_offset;
 163    }
 164
 165    iris_use_pinned_bo(batch, binder->bo, false);
 166
 167    ice->vtbl.update_surface_base_address(batch, binder);
 168 }
 169
 170 static void *
 171 blorp_alloc_vertex_buffer(struct blorp_batch *blorp_batch,
 172                           uint32_t size,
 173                           struct blorp_address *addr)
 174 {
 175    struct iris_context *ice = blorp_batch->blorp->driver_ctx;
 176    struct iris_batch *batch = blorp_batch->driver_batch;
 177    struct iris_bo *bo;
 178    uint32_t offset;
 179
 180    void *map = stream_state(batch, ice->ctx.stream_uploader, size, 64,
 181                             &offset, &bo);
 182
 183    *addr = (struct blorp_address) {
 184       .buffer = bo,
 185       .offset = offset,
 186       .mocs = iris_mocs(bo, &batch->screen->isl_dev),
 187    };
 188
 189    return map;
 190 }
 191
 192 /**
 193  * See iris_upload_render_state's IRIS_DIRTY_VERTEX_BUFFERS handling for
 194  * a comment about why these VF invalidations are needed.
 195  */
 196 static void
 197 blorp_vf_invalidate_for_vb_48b_transitions(struct blorp_batch *blorp_batch,
 198                                            const struct blorp_address *addrs,
 199                                            UNUSED uint32_t *sizes,
 200                                            unsigned num_vbs)
 201 {
 202 #if GEN_GEN < 11
 203    struct iris_context *ice = blorp_batch->blorp->driver_ctx;
 204    struct iris_batch *batch = blorp_batch->driver_batch;
 205    bool need_invalidate = false;
 206
 207    for (unsigned i = 0; i < num_vbs; i++) {
 208       struct iris_bo *bo = addrs[i].buffer;
 209       uint16_t high_bits = bo->gtt_offset >> 32u;
 210
 211       if (high_bits != ice->state.last_vbo_high_bits[i]) {
 212          need_invalidate = true;
 213          ice->state.last_vbo_high_bits[i] = high_bits;
 214       }
 215    }
 216
 217    if (need_invalidate) {
 218       iris_emit_pipe_control_flush(batch,
 219                                    "workaround: VF cache 32-bit key [blorp]",
 220                                    PIPE_CONTROL_VF_CACHE_INVALIDATE |
 221                                    PIPE_CONTROL_CS_STALL);
 222    }
 223 #endif
 224 }
 225
 226 static struct blorp_address
 227 blorp_get_workaround_page(struct blorp_batch *blorp_batch)
 228 {
 229    struct iris_batch *batch = blorp_batch->driver_batch;
 230
 231    return (struct blorp_address) { .buffer = batch->screen->workaround_bo };
 232 }
 233
 234 static void
 235 blorp_flush_range(UNUSED struct blorp_batch *blorp_batch,
 236                   UNUSED void *start,
 237                   UNUSED size_t size)
 238 {
 239    /* All allocated states come from the batch which we will flush before we
 240     * submit it.  There's nothing for us to do here.
 241     */
 242 }
 243
 244 static const struct gen_l3_config *
 245 blorp_get_l3_config(struct blorp_batch *blorp_batch)
 246 {
 247    struct iris_batch *batch = blorp_batch->driver_batch;
 248    return batch->screen->l3_config_3d;
 249 }
 250
 251 static void
 252 iris_blorp_exec(struct blorp_batch *blorp_batch,
 253                 const struct blorp_params *params)
 254 {
 255    struct iris_context *ice = blorp_batch->blorp->driver_ctx;
 256    struct iris_batch *batch = blorp_batch->driver_batch;
 257
 258 #if GEN_GEN >= 11
 259    /* The PIPE_CONTROL command description says:
 260     *
 261     *    "Whenever a Binding Table Index (BTI) used by a Render Target Message
 262     *     points to a different RENDER_SURFACE_STATE, SW must issue a Render
 263     *     Target Cache Flush by enabling this bit. When render target flush
 264     *     is set due to new association of BTI, PS Scoreboard Stall bit must
 265     *     be set in this packet."
 266     */
 267    iris_emit_pipe_control_flush(batch,
 268                                 "workaround: RT BTI change [blorp]",
 269                                 PIPE_CONTROL_RENDER_TARGET_FLUSH |
 270                                 PIPE_CONTROL_STALL_AT_SCOREBOARD);
 271 #endif
 272
 273    /* Flush the sampler and render caches.  We definitely need to flush the
 274     * sampler cache so that we get updated contents from the render cache for
 275     * the glBlitFramebuffer() source.  Also, we are sometimes warned in the
 276     * docs to flush the cache between reinterpretations of the same surface
 277     * data with different formats, which blorp does for stencil and depth
 278     * data.
 279     */
 280    if (params->src.enabled)
 281       iris_cache_flush_for_read(batch, params->src.addr.buffer);
 282    if (params->dst.enabled) {
 283       iris_cache_flush_for_render(batch, params->dst.addr.buffer,
 284                                   params->dst.view.format,
 285                                   params->dst.aux_usage);
 286    }
 287    if (params->depth.enabled)
 288       iris_cache_flush_for_depth(batch, params->depth.addr.buffer);
 289    if (params->stencil.enabled)
 290       iris_cache_flush_for_depth(batch, params->stencil.addr.buffer);
 291
 292    iris_require_command_space(batch, 1400);
 293
 294 #if GEN_GEN == 8
 295    genX(update_pma_fix)(ice, batch, false);
 296 #endif
 297
 298    const unsigned scale = params->fast_clear_op ? UINT_MAX : 1;
 299    if (ice->state.current_hash_scale != scale) {
 300       genX(emit_hashing_mode)(ice, batch, params->x1 - params->x0,
 301                               params->y1 - params->y0, scale);
 302    }
 303
 304 #if GEN_GEN >= 12
 305    genX(emit_aux_map_state)(batch);
 306 #endif
 307
 308    iris_handle_always_flush_cache(batch);
 309
 310    blorp_exec(blorp_batch, params);
 311
 312    iris_handle_always_flush_cache(batch);
 313
 314    /* We've smashed all state compared to what the normal 3D pipeline
 315     * rendering tracks for GL.
 316     */
 317
 318    uint64_t skip_bits = (IRIS_DIRTY_POLYGON_STIPPLE |
 319                          IRIS_DIRTY_SO_BUFFERS |
 320                          IRIS_DIRTY_SO_DECL_LIST |
 321                          IRIS_DIRTY_LINE_STIPPLE |
 322                          IRIS_ALL_DIRTY_FOR_COMPUTE |
 323                          IRIS_DIRTY_SCISSOR_RECT |
 324                          IRIS_DIRTY_UNCOMPILED_VS |
 325                          IRIS_DIRTY_UNCOMPILED_TCS |
 326                          IRIS_DIRTY_UNCOMPILED_TES |
 327                          IRIS_DIRTY_UNCOMPILED_GS |
 328                          IRIS_DIRTY_UNCOMPILED_FS |
 329                          IRIS_DIRTY_VF |
 330                          IRIS_DIRTY_SF_CL_VIEWPORT |
 331                          IRIS_DIRTY_SAMPLER_STATES_VS |
 332                          IRIS_DIRTY_SAMPLER_STATES_TCS |
 333                          IRIS_DIRTY_SAMPLER_STATES_TES |
 334                          IRIS_DIRTY_SAMPLER_STATES_GS);
 335
 336    if (!ice->shaders.uncompiled[MESA_SHADER_TESS_EVAL]) {
 337       /* BLORP disabled tessellation, that's fine for the next draw */
 338       skip_bits |= IRIS_DIRTY_TCS |
 339                    IRIS_DIRTY_TES |
 340                    IRIS_DIRTY_CONSTANTS_TCS |
 341                    IRIS_DIRTY_CONSTANTS_TES |
 342                    IRIS_DIRTY_BINDINGS_TCS |
 343                    IRIS_DIRTY_BINDINGS_TES;
 344    }
 345
 346    if (!ice->shaders.uncompiled[MESA_SHADER_GEOMETRY]) {
 347       /* BLORP disabled geometry shaders, that's fine for the next draw */
 348       skip_bits |= IRIS_DIRTY_GS |
 349                    IRIS_DIRTY_CONSTANTS_GS |
 350                    IRIS_DIRTY_BINDINGS_GS;
 351    }
 352
 353    /* we can skip flagging IRIS_DIRTY_DEPTH_BUFFER, if
 354     * BLORP_BATCH_NO_EMIT_DEPTH_STENCIL is set.
 355     */
 356    if (blorp_batch->flags & BLORP_BATCH_NO_EMIT_DEPTH_STENCIL)
 357       skip_bits |= IRIS_DIRTY_DEPTH_BUFFER;
 358
 359    if (!params->wm_prog_data)
 360       skip_bits |= IRIS_DIRTY_BLEND_STATE | IRIS_DIRTY_PS_BLEND;
 361
 362    ice->state.dirty |= ~skip_bits;
 363
 364    if (params->dst.enabled) {
 365       iris_render_cache_add_bo(batch, params->dst.addr.buffer,
 366                                params->dst.view.format,
 367                                params->dst.aux_usage);
 368    }
 369    if (params->depth.enabled)
 370       iris_depth_cache_add_bo(batch, params->depth.addr.buffer);
 371    if (params->stencil.enabled)
 372       iris_depth_cache_add_bo(batch, params->stencil.addr.buffer);
 373 }
 374
 375 void
 376 genX(init_blorp)(struct iris_context *ice)
 377 {
 378    struct iris_screen *screen = (struct iris_screen *)ice->ctx.screen;
 379
 380    blorp_init(&ice->blorp, ice, &screen->isl_dev);
 381    ice->blorp.compiler = screen->compiler;
 382    ice->blorp.lookup_shader = iris_blorp_lookup_shader;
 383    ice->blorp.upload_shader = iris_blorp_upload_shader;
 384    ice->blorp.exec = iris_blorp_exec;
 385 }