src/gallium/drivers/r600/r600_test_dma.c

   1 /*
   2  * Copyright 2016 Advanced Micro Devices, Inc.
   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 (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  */
  24
  25 /* This file implements randomized SDMA texture blit tests. */
  26
  27 #include "r600_pipe_common.h"
  28 #include "util/u_surface.h"
  29 #include "util/rand_xor.h"
  30
  31 static uint64_t seed_xorshift128plus[2];
  32
  33 #define RAND_NUM_SIZE 8
  34
  35 /* The GPU blits are emulated on the CPU using these CPU textures. */
  36
  37 struct cpu_texture {
  38         uint8_t *ptr;
  39         uint64_t size;
  40         uint64_t layer_stride;
  41         unsigned stride;
  42 };
  43
  44 static void alloc_cpu_texture(struct cpu_texture *tex,
  45                               struct pipe_resource *templ, int bpp)
  46 {
  47         tex->stride = align(templ->width0 * bpp, RAND_NUM_SIZE);
  48         tex->layer_stride = (uint64_t)tex->stride * templ->height0;
  49         tex->size = tex->layer_stride * templ->array_size;
  50         tex->ptr = malloc(tex->size);
  51         assert(tex->ptr);
  52 }
  53
  54 static void set_random_pixels(struct pipe_context *ctx,
  55                               struct pipe_resource *tex,
  56                               struct cpu_texture *cpu)
  57 {
  58         struct pipe_transfer *t;
  59         uint8_t *map;
  60         unsigned x,y,z;
  61
  62         map = pipe_transfer_map_3d(ctx, tex, 0, PIPE_TRANSFER_WRITE,
  63                                    0, 0, 0, tex->width0, tex->height0,
  64                                    tex->array_size, &t);
  65         assert(map);
  66
  67         for (z = 0; z < tex->array_size; z++) {
  68                 for (y = 0; y < tex->height0; y++) {
  69                         uint64_t *ptr = (uint64_t*)
  70                                 (map + t->layer_stride*z + t->stride*y);
  71                         uint64_t *ptr_cpu = (uint64_t*)
  72                                 (cpu->ptr + cpu->layer_stride*z + cpu->stride*y);
  73                         unsigned size = cpu->stride / RAND_NUM_SIZE;
  74
  75                         assert(t->stride % RAND_NUM_SIZE == 0);
  76                         assert(cpu->stride % RAND_NUM_SIZE == 0);
  77
  78                         for (x = 0; x < size; x++) {
  79                                 *ptr++ = *ptr_cpu++ =
  80                                         rand_xorshift128plus(seed_xorshift128plus);
  81                         }
  82                 }
  83         }
  84
  85         pipe_transfer_unmap(ctx, t);
  86 }
  87
  88 static bool compare_textures(struct pipe_context *ctx,
  89                              struct pipe_resource *tex,
  90                              struct cpu_texture *cpu, int bpp)
  91 {
  92         struct pipe_transfer *t;
  93         uint8_t *map;
  94         int y,z;
  95         bool pass = true;
  96
  97         map = pipe_transfer_map_3d(ctx, tex, 0, PIPE_TRANSFER_READ,
  98                                    0, 0, 0, tex->width0, tex->height0,
  99                                    tex->array_size, &t);
 100         assert(map);
 101
 102         for (z = 0; z < tex->array_size; z++) {
 103                 for (y = 0; y < tex->height0; y++) {
 104                         uint8_t *ptr = map + t->layer_stride*z + t->stride*y;
 105                         uint8_t *cpu_ptr = cpu->ptr +
 106                                            cpu->layer_stride*z + cpu->stride*y;
 107
 108                         if (memcmp(ptr, cpu_ptr, tex->width0 * bpp)) {
 109                                 pass = false;
 110                                 goto done;
 111                         }
 112                 }
 113         }
 114 done:
 115         pipe_transfer_unmap(ctx, t);
 116         return pass;
 117 }
 118
 119 static enum pipe_format get_format_from_bpp(int bpp)
 120 {
 121         switch (bpp) {
 122         case 1:
 123                 return PIPE_FORMAT_R8_UINT;
 124         case 2:
 125                 return PIPE_FORMAT_R16_UINT;
 126         case 4:
 127                 return PIPE_FORMAT_R32_UINT;
 128         case 8:
 129                 return PIPE_FORMAT_R32G32_UINT;
 130         case 16:
 131                 return PIPE_FORMAT_R32G32B32A32_UINT;
 132         default:
 133                 assert(0);
 134                 return PIPE_FORMAT_NONE;
 135         }
 136 }
 137
 138 static const char *array_mode_to_string(struct r600_common_screen *rscreen,
 139                                         struct radeon_surf *surf)
 140 {
 141         if (rscreen->chip_class >= GFX9) {
 142                 /* TODO */
 143                 return "       UNKNOWN";
 144         } else {
 145                 switch (surf->u.legacy.level[0].mode) {
 146                 case RADEON_SURF_MODE_LINEAR_ALIGNED:
 147                         return "LINEAR_ALIGNED";
 148                 case RADEON_SURF_MODE_1D:
 149                         return "1D_TILED_THIN1";
 150                 case RADEON_SURF_MODE_2D:
 151                         return "2D_TILED_THIN1";
 152                 default:
 153                         assert(0);
 154                         return "       UNKNOWN";
 155                 }
 156         }
 157 }
 158
 159 static unsigned generate_max_tex_side(unsigned max_tex_side)
 160 {
 161         switch (rand() % 4) {
 162         case 0:
 163                 /* Try to hit large sizes in 1/4 of the cases. */
 164                 return max_tex_side;
 165         case 1:
 166                 /* Try to hit 1D tiling in 1/4 of the cases. */
 167                 return 128;
 168         default:
 169                 /* Try to hit common sizes in 2/4 of the cases. */
 170                 return 2048;
 171         }
 172 }
 173
 174 void r600_test_dma(struct r600_common_screen *rscreen)
 175 {
 176         struct pipe_screen *screen = &rscreen->b;
 177         struct pipe_context *ctx = screen->context_create(screen, NULL, 0);
 178         struct r600_common_context *rctx = (struct r600_common_context*)ctx;
 179         uint64_t max_alloc_size;
 180         unsigned i, iterations, num_partial_copies, max_tex_side;
 181         unsigned num_pass = 0, num_fail = 0;
 182
 183         max_tex_side = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_SIZE);
 184
 185         /* Max 128 MB allowed for both textures. */
 186         max_alloc_size = 128 * 1024 * 1024;
 187
 188         /* the seed for random test parameters */
 189         srand(0x9b47d95b);
 190         /* the seed for random pixel data */
 191         s_rand_xorshift128plus(seed_xorshift128plus, false);
 192
 193         iterations = 1000000000; /* just kill it when you are bored */
 194         num_partial_copies = 30;
 195
 196         /* These parameters are randomly generated per test:
 197          * - whether to do one whole-surface copy or N partial copies per test
 198          * - which tiling modes to use (LINEAR_ALIGNED, 1D, 2D)
 199          * - which texture dimensions to use
 200          * - whether to use VRAM (all tiling modes) and GTT (staging, linear
 201          *   only) allocations
 202          * - random initial pixels in src
 203          * - generate random subrectangle copies for partial blits
 204          */
 205         for (i = 0; i < iterations; i++) {
 206                 struct pipe_resource tsrc = {}, tdst = {}, *src, *dst;
 207                 struct r600_texture *rdst;
 208                 struct r600_texture *rsrc;
 209                 struct cpu_texture src_cpu, dst_cpu;
 210                 unsigned bpp, max_width, max_height, max_depth, j, num;
 211                 unsigned gfx_blits = 0, dma_blits = 0, max_tex_side_gen;
 212                 unsigned max_tex_layers;
 213                 bool pass;
 214                 bool do_partial_copies = rand() & 1;
 215
 216                 /* generate a random test case */
 217                 tsrc.target = tdst.target = PIPE_TEXTURE_2D_ARRAY;
 218                 tsrc.depth0 = tdst.depth0 = 1;
 219
 220                 bpp = 1 << (rand() % 5);
 221                 tsrc.format = tdst.format = get_format_from_bpp(bpp);
 222
 223                 max_tex_side_gen = generate_max_tex_side(max_tex_side);
 224                 max_tex_layers = rand() % 4 ? 1 : 5;
 225
 226                 tsrc.width0 = (rand() % max_tex_side_gen) + 1;
 227                 tsrc.height0 = (rand() % max_tex_side_gen) + 1;
 228                 tsrc.array_size = (rand() % max_tex_layers) + 1;
 229
 230                 /* Have a 1/4 chance of getting power-of-two dimensions. */
 231                 if (rand() % 4 == 0) {
 232                         tsrc.width0 = util_next_power_of_two(tsrc.width0);
 233                         tsrc.height0 = util_next_power_of_two(tsrc.height0);
 234                 }
 235
 236                 if (!do_partial_copies) {
 237                         /* whole-surface copies only, same dimensions */
 238                         tdst = tsrc;
 239                 } else {
 240                         max_tex_side_gen = generate_max_tex_side(max_tex_side);
 241                         max_tex_layers = rand() % 4 ? 1 : 5;
 242
 243                         /* many partial copies, dimensions can be different */
 244                         tdst.width0 = (rand() % max_tex_side_gen) + 1;
 245                         tdst.height0 = (rand() % max_tex_side_gen) + 1;
 246                         tdst.array_size = (rand() % max_tex_layers) + 1;
 247
 248                         /* Have a 1/4 chance of getting power-of-two dimensions. */
 249                         if (rand() % 4 == 0) {
 250                                 tdst.width0 = util_next_power_of_two(tdst.width0);
 251                                 tdst.height0 = util_next_power_of_two(tdst.height0);
 252                         }
 253                 }
 254
 255                 /* check texture sizes */
 256                 if ((uint64_t)tsrc.width0 * tsrc.height0 * tsrc.array_size * bpp +
 257                     (uint64_t)tdst.width0 * tdst.height0 * tdst.array_size * bpp >
 258                     max_alloc_size) {
 259                         /* too large, try again */
 260                         i--;
 261                         continue;
 262                 }
 263
 264                 /* VRAM + the tiling mode depends on dimensions (3/4 of cases),
 265                  * or GTT + linear only (1/4 of cases)
 266                  */
 267                 tsrc.usage = rand() % 4 ? PIPE_USAGE_DEFAULT : PIPE_USAGE_STAGING;
 268                 tdst.usage = rand() % 4 ? PIPE_USAGE_DEFAULT : PIPE_USAGE_STAGING;
 269
 270                 /* Allocate textures (both the GPU and CPU copies).
 271                  * The CPU will emulate what the GPU should be doing.
 272                  */
 273                 src = screen->resource_create(screen, &tsrc);
 274                 dst = screen->resource_create(screen, &tdst);
 275                 assert(src);
 276                 assert(dst);
 277                 rdst = (struct r600_texture*)dst;
 278                 rsrc = (struct r600_texture*)src;
 279                 alloc_cpu_texture(&src_cpu, &tsrc, bpp);
 280                 alloc_cpu_texture(&dst_cpu, &tdst, bpp);
 281
 282                 printf("%4u: dst = (%5u x %5u x %u, %s), "
 283                        " src = (%5u x %5u x %u, %s), bpp = %2u, ",
 284                        i, tdst.width0, tdst.height0, tdst.array_size,
 285                        array_mode_to_string(rscreen, &rdst->surface),
 286                        tsrc.width0, tsrc.height0, tsrc.array_size,
 287                        array_mode_to_string(rscreen, &rsrc->surface), bpp);
 288                 fflush(stdout);
 289
 290                 /* set src pixels */
 291                 set_random_pixels(ctx, src, &src_cpu);
 292
 293                 /* clear dst pixels */
 294                 rctx->clear_buffer(ctx, dst, 0, rdst->surface.surf_size, 0, true);
 295                 memset(dst_cpu.ptr, 0, dst_cpu.layer_stride * tdst.array_size);
 296
 297                 /* preparation */
 298                 max_width = MIN2(tsrc.width0, tdst.width0);
 299                 max_height = MIN2(tsrc.height0, tdst.height0);
 300                 max_depth = MIN2(tsrc.array_size, tdst.array_size);
 301
 302                 num = do_partial_copies ? num_partial_copies : 1;
 303                 for (j = 0; j < num; j++) {
 304                         int width, height, depth;
 305                         int srcx, srcy, srcz, dstx, dsty, dstz;
 306                         struct pipe_box box;
 307                         unsigned old_num_draw_calls = rctx->num_draw_calls;
 308                         unsigned old_num_dma_calls = rctx->num_dma_calls;
 309
 310                         if (!do_partial_copies) {
 311                                 /* copy whole src to dst */
 312                                 width = max_width;
 313                                 height = max_height;
 314                                 depth = max_depth;
 315
 316                                 srcx = srcy = srcz = dstx = dsty = dstz = 0;
 317                         } else {
 318                                 /* random sub-rectangle copies from src to dst */
 319                                 depth = (rand() % max_depth) + 1;
 320                                 srcz = rand() % (tsrc.array_size - depth + 1);
 321                                 dstz = rand() % (tdst.array_size - depth + 1);
 322
 323                                 /* special code path to hit the tiled partial copies */
 324                                 if (!rsrc->surface.is_linear &&
 325                                     !rdst->surface.is_linear &&
 326                                     rand() & 1) {
 327                                         if (max_width < 8 || max_height < 8)
 328                                                 continue;
 329                                         width = ((rand() % (max_width / 8)) + 1) * 8;
 330                                         height = ((rand() % (max_height / 8)) + 1) * 8;
 331
 332                                         srcx = rand() % (tsrc.width0 - width + 1) & ~0x7;
 333                                         srcy = rand() % (tsrc.height0 - height + 1) & ~0x7;
 334
 335                                         dstx = rand() % (tdst.width0 - width + 1) & ~0x7;
 336                                         dsty = rand() % (tdst.height0 - height + 1) & ~0x7;
 337                                 } else {
 338                                         /* just make sure that it doesn't divide by zero */
 339                                         assert(max_width > 0 && max_height > 0);
 340
 341                                         width = (rand() % max_width) + 1;
 342                                         height = (rand() % max_height) + 1;
 343
 344                                         srcx = rand() % (tsrc.width0 - width + 1);
 345                                         srcy = rand() % (tsrc.height0 - height + 1);
 346
 347                                         dstx = rand() % (tdst.width0 - width + 1);
 348                                         dsty = rand() % (tdst.height0 - height + 1);
 349                                 }
 350
 351                                 /* special code path to hit out-of-bounds reads in L2T */
 352                                 if (rsrc->surface.is_linear &&
 353                                     !rdst->surface.is_linear &&
 354                                     rand() % 4 == 0) {
 355                                         srcx = 0;
 356                                         srcy = 0;
 357                                         srcz = 0;
 358                                 }
 359                         }
 360
 361                         /* GPU copy */
 362                         u_box_3d(srcx, srcy, srcz, width, height, depth, &box);
 363                         rctx->dma_copy(ctx, dst, 0, dstx, dsty, dstz, src, 0, &box);
 364
 365                         /* See which engine was used. */
 366                         gfx_blits += rctx->num_draw_calls > old_num_draw_calls;
 367                         dma_blits += rctx->num_dma_calls > old_num_dma_calls;
 368
 369                         /* CPU copy */
 370                         util_copy_box(dst_cpu.ptr, tdst.format, dst_cpu.stride,
 371                                       dst_cpu.layer_stride,
 372                                       dstx, dsty, dstz, width, height, depth,
 373                                       src_cpu.ptr, src_cpu.stride,
 374                                       src_cpu.layer_stride,
 375                                       srcx, srcy, srcz);
 376                 }
 377
 378                 pass = compare_textures(ctx, dst, &dst_cpu, bpp);
 379                 if (pass)
 380                         num_pass++;
 381                 else
 382                         num_fail++;
 383
 384                 printf("BLITs: GFX = %2u, DMA = %2u, %s [%u/%u]\n",
 385                        gfx_blits, dma_blits, pass ? "pass" : "fail",
 386                        num_pass, num_pass+num_fail);
 387
 388                 /* cleanup */
 389                 pipe_resource_reference(&src, NULL);
 390                 pipe_resource_reference(&dst, NULL);
 391                 free(src_cpu.ptr);
 392                 free(dst_cpu.ptr);
 393         }
 394
 395         ctx->destroy(ctx);
 396         exit(0);
 397 }