src/gallium/drivers/vc4/vc4_simulator.c

   1 /*
   2  * Copyright © 2014 Broadcom
   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
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #ifdef USE_VC4_SIMULATOR
  25
  26 #include "util/u_memory.h"
  27 #include "util/ralloc.h"
  28
  29 #include "vc4_screen.h"
  30 #include "vc4_context.h"
  31 #include "kernel/vc4_drv.h"
  32 #include "vc4_simulator_validate.h"
  33 #include "simpenrose/simpenrose.h"
  34
  35 #define OVERFLOW_SIZE (32 * 1024 * 1024)
  36
  37 static struct drm_gem_cma_object *
  38 vc4_wrap_bo_with_cma(struct drm_device *dev, struct vc4_bo *bo)
  39 {
  40         struct vc4_context *vc4 = dev->vc4;
  41         struct vc4_screen *screen = vc4->screen;
  42         struct drm_gem_cma_object *obj = CALLOC_STRUCT(drm_gem_cma_object);
  43         uint32_t size = align(bo->size, 4096);
  44
  45         obj->bo = bo;
  46         obj->base.size = size;
  47         obj->vaddr = screen->simulator_mem_base + dev->simulator_mem_next;
  48         obj->paddr = simpenrose_hw_addr(obj->vaddr);
  49
  50         dev->simulator_mem_next += size;
  51         dev->simulator_mem_next = align(dev->simulator_mem_next, 4096);
  52         assert(dev->simulator_mem_next <= screen->simulator_mem_size);
  53
  54         return obj;
  55 }
  56
  57 struct drm_gem_cma_object *
  58 drm_gem_cma_create(struct drm_device *dev, size_t size)
  59 {
  60         struct vc4_context *vc4 = dev->vc4;
  61         struct vc4_screen *screen = vc4->screen;
  62
  63         struct vc4_bo *bo = vc4_bo_alloc(screen, size, "simulator validate");
  64         return vc4_wrap_bo_with_cma(dev, bo);
  65 }
  66
  67 static int
  68 vc4_simulator_pin_bos(struct drm_device *dev, struct exec_info *exec)
  69 {
  70         struct drm_vc4_submit_cl *args = exec->args;
  71         struct vc4_context *vc4 = dev->vc4;
  72         struct vc4_bo **bos = vc4->bo_pointers.base;
  73
  74         exec->bo_count = args->bo_handle_count;
  75         exec->bo = calloc(exec->bo_count, sizeof(struct vc4_bo_exec_state));
  76         for (int i = 0; i < exec->bo_count; i++) {
  77                 struct vc4_bo *bo = bos[i];
  78                 struct drm_gem_cma_object *obj = vc4_wrap_bo_with_cma(dev, bo);
  79
  80 #if 0
  81                 fprintf(stderr, "bo hindex %d: %s\n", i, bo->name);
  82 #endif
  83
  84                 vc4_bo_map(bo);
  85                 memcpy(obj->vaddr, bo->map, bo->size);
  86
  87                 exec->bo[i].bo = obj;
  88         }
  89         return 0;
  90 }
  91
  92 static int
  93 vc4_simulator_unpin_bos(struct exec_info *exec)
  94 {
  95         for (int i = 0; i < exec->bo_count; i++) {
  96                 struct drm_gem_cma_object *obj = exec->bo[i].bo;
  97                 struct vc4_bo *bo = obj->bo;
  98
  99                 memcpy(bo->map, obj->vaddr, bo->size);
 100
 101                 free(obj);
 102         }
 103
 104         free(exec->bo);
 105
 106         return 0;
 107 }
 108
 109 int
 110 vc4_simulator_flush(struct vc4_context *vc4, struct drm_vc4_submit_cl *args)
 111 {
 112         struct vc4_screen *screen = vc4->screen;
 113         struct vc4_surface *csurf = vc4_surface(vc4->framebuffer.cbufs[0]);
 114         struct vc4_resource *ctex = csurf ? vc4_resource(csurf->base.texture) : NULL;
 115         uint32_t winsys_stride = ctex ? ctex->bo->simulator_winsys_stride : 0;
 116         uint32_t sim_stride = ctex ? ctex->slices[0].stride : 0;
 117         uint32_t row_len = MIN2(sim_stride, winsys_stride);
 118         struct exec_info exec;
 119         struct drm_device local_dev = {
 120                 .vc4 = vc4,
 121                 .simulator_mem_next = OVERFLOW_SIZE,
 122         };
 123         struct drm_device *dev = &local_dev;
 124         int ret;
 125
 126         memset(&exec, 0, sizeof(exec));
 127
 128         if (ctex && ctex->bo->simulator_winsys_map) {
 129 #if 0
 130                 fprintf(stderr, "%dx%d %d %d %d\n",
 131                         ctex->base.b.width0, ctex->base.b.height0,
 132                         winsys_stride,
 133                         sim_stride,
 134                         ctex->bo->size);
 135 #endif
 136
 137                 for (int y = 0; y < ctex->base.b.height0; y++) {
 138                         memcpy(ctex->bo->map + y * sim_stride,
 139                                ctex->bo->simulator_winsys_map + y * winsys_stride,
 140                                row_len);
 141                 }
 142         }
 143
 144         exec.args = args;
 145
 146         ret = vc4_simulator_pin_bos(dev, &exec);
 147         if (ret)
 148                 return ret;
 149
 150         ret = vc4_cl_validate(dev, &exec);
 151         if (ret)
 152                 return ret;
 153
 154         int bfc = simpenrose_do_binning(exec.ct0ca, exec.ct0ea);
 155         if (bfc != 1) {
 156                 fprintf(stderr, "Binning returned %d flushes, should be 1.\n",
 157                         bfc);
 158                 fprintf(stderr, "Relocated binning command list:\n");
 159                 vc4_dump_cl(screen->simulator_mem_base + exec.ct0ca,
 160                             exec.ct0ea - exec.ct0ca, false);
 161                 abort();
 162         }
 163         int rfc = simpenrose_do_rendering(exec.ct1ca, exec.ct1ea);
 164         if (rfc != 1) {
 165                 fprintf(stderr, "Rendering returned %d frames, should be 1.\n",
 166                         rfc);
 167                 fprintf(stderr, "Relocated render command list:\n");
 168                 vc4_dump_cl(screen->simulator_mem_base + exec.ct1ca,
 169                             exec.ct1ea - exec.ct1ca, true);
 170                 abort();
 171         }
 172
 173         ret = vc4_simulator_unpin_bos(&exec);
 174         if (ret)
 175                 return ret;
 176
 177         vc4_bo_unreference(&exec.exec_bo->bo);
 178         free(exec.exec_bo);
 179
 180         if (ctex && ctex->bo->simulator_winsys_map) {
 181                 for (int y = 0; y < ctex->base.b.height0; y++) {
 182                         memcpy(ctex->bo->simulator_winsys_map + y * winsys_stride,
 183                                ctex->bo->map + y * sim_stride,
 184                                row_len);
 185                 }
 186         }
 187
 188         return 0;
 189 }
 190
 191 void
 192 vc4_simulator_init(struct vc4_screen *screen)
 193 {
 194         screen->simulator_mem_size = 256 * 1024 * 1024;
 195         screen->simulator_mem_base = ralloc_size(screen,
 196                                                  screen->simulator_mem_size);
 197
 198         /* We supply our own memory so that we can have more aperture
 199          * available (256MB instead of simpenrose's default 64MB).
 200          */
 201         simpenrose_init_hardware_supply_mem(screen->simulator_mem_base,
 202                                             screen->simulator_mem_size);
 203
 204         /* Carve out low memory for tile allocation overflow.  The kernel
 205          * should be automatically handling overflow memory setup on real
 206          * hardware, but for simulation we just get one shot to set up enough
 207          * overflow memory before execution.  This overflow mem will be used
 208          * up over the whole lifetime of simpenrose (not reused on each
 209          * flush), so it had better be big.
 210          */
 211         simpenrose_supply_overflow_mem(0, OVERFLOW_SIZE);
 212 }
 213
 214 #endif /* USE_VC4_SIMULATOR */