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_vc4_bo *drm_bo = CALLOC_STRUCT(drm_vc4_bo);
  43         struct drm_gem_cma_object *obj = &drm_bo->base;
  44         uint32_t size = align(bo->size, 4096);
  45
  46         drm_bo->bo = bo;
  47         obj->base.size = size;
  48         obj->base.dev = dev;
  49         obj->vaddr = screen->simulator_mem_base + dev->simulator_mem_next;
  50         obj->paddr = simpenrose_hw_addr(obj->vaddr);
  51
  52         dev->simulator_mem_next += size;
  53         dev->simulator_mem_next = align(dev->simulator_mem_next, 4096);
  54         assert(dev->simulator_mem_next <= screen->simulator_mem_size);
  55
  56         return obj;
  57 }
  58
  59 struct drm_gem_cma_object *
  60 drm_gem_cma_create(struct drm_device *dev, size_t size)
  61 {
  62         struct vc4_context *vc4 = dev->vc4;
  63         struct vc4_screen *screen = vc4->screen;
  64
  65         struct vc4_bo *bo = vc4_bo_alloc(screen, size, "simulator validate");
  66         return vc4_wrap_bo_with_cma(dev, bo);
  67 }
  68
  69 static int
  70 vc4_simulator_pin_bos(struct drm_device *dev, struct vc4_exec_info *exec)
  71 {
  72         struct drm_vc4_submit_cl *args = exec->args;
  73         struct vc4_context *vc4 = dev->vc4;
  74         struct vc4_bo **bos = vc4->bo_pointers.base;
  75
  76         exec->bo_count = args->bo_handle_count;
  77         exec->bo = calloc(exec->bo_count, sizeof(void *));
  78         for (int i = 0; i < exec->bo_count; i++) {
  79                 struct vc4_bo *bo = bos[i];
  80                 struct drm_gem_cma_object *obj = vc4_wrap_bo_with_cma(dev, bo);
  81
  82                 struct drm_vc4_bo *drm_bo = to_vc4_bo(&obj->base);
  83 #if 0
  84                 fprintf(stderr, "bo hindex %d: %s\n", i, bo->name);
  85 #endif
  86
  87                 vc4_bo_map(bo);
  88                 memcpy(obj->vaddr, bo->map, bo->size);
  89
  90                 exec->bo[i] = obj;
  91
  92                 /* The kernel does this validation at shader create ioctl
  93                  * time.
  94                  */
  95                 if (strcmp(bo->name, "code") == 0) {
  96                         drm_bo->validated_shader = vc4_validate_shader(obj);
  97                         if (!drm_bo->validated_shader)
  98                                 abort();
  99                 }
 100         }
 101         return 0;
 102 }
 103
 104 static int
 105 vc4_simulator_unpin_bos(struct vc4_exec_info *exec)
 106 {
 107         for (int i = 0; i < exec->bo_count; i++) {
 108                 struct drm_gem_cma_object *obj = exec->bo[i];
 109                 struct vc4_bo *bo = to_vc4_bo(&obj->base)->bo;
 110
 111                 memcpy(bo->map, obj->vaddr, bo->size);
 112
 113                 free(obj);
 114         }
 115
 116         free(exec->bo);
 117
 118         return 0;
 119 }
 120
 121 int
 122 vc4_simulator_flush(struct vc4_context *vc4, struct drm_vc4_submit_cl *args)
 123 {
 124         struct vc4_screen *screen = vc4->screen;
 125         struct vc4_surface *csurf = vc4_surface(vc4->framebuffer.cbufs[0]);
 126         struct vc4_resource *ctex = csurf ? vc4_resource(csurf->base.texture) : NULL;
 127         uint32_t winsys_stride = ctex ? ctex->bo->simulator_winsys_stride : 0;
 128         uint32_t sim_stride = ctex ? ctex->slices[0].stride : 0;
 129         uint32_t row_len = MIN2(sim_stride, winsys_stride);
 130         struct vc4_exec_info exec;
 131         struct drm_device local_dev = {
 132                 .vc4 = vc4,
 133                 .simulator_mem_next = OVERFLOW_SIZE,
 134         };
 135         struct drm_device *dev = &local_dev;
 136         int ret;
 137
 138         memset(&exec, 0, sizeof(exec));
 139         list_inithead(&exec.unref_list);
 140
 141         if (ctex && ctex->bo->simulator_winsys_map) {
 142 #if 0
 143                 fprintf(stderr, "%dx%d %d %d %d\n",
 144                         ctex->base.b.width0, ctex->base.b.height0,
 145                         winsys_stride,
 146                         sim_stride,
 147                         ctex->bo->size);
 148 #endif
 149
 150                 for (int y = 0; y < ctex->base.b.height0; y++) {
 151                         memcpy(ctex->bo->map + y * sim_stride,
 152                                ctex->bo->simulator_winsys_map + y * winsys_stride,
 153                                row_len);
 154                 }
 155         }
 156
 157         exec.args = args;
 158
 159         ret = vc4_simulator_pin_bos(dev, &exec);
 160         if (ret)
 161                 return ret;
 162
 163         ret = vc4_cl_validate(dev, &exec);
 164         if (ret)
 165                 return ret;
 166
 167         if (exec.ct0ca != exec.ct0ea) {
 168                 int bfc = simpenrose_do_binning(exec.ct0ca, exec.ct0ea);
 169                 if (bfc != 1) {
 170                         fprintf(stderr, "Binning returned %d flushes, should be 1.\n",
 171                                 bfc);
 172                         fprintf(stderr, "Relocated binning command list:\n");
 173                         vc4_dump_cl(screen->simulator_mem_base + exec.ct0ca,
 174                                     exec.ct0ea - exec.ct0ca, false);
 175                         abort();
 176                 }
 177         }
 178         int rfc = simpenrose_do_rendering(exec.ct1ca, exec.ct1ea);
 179         if (rfc != 1) {
 180                 fprintf(stderr, "Rendering returned %d frames, should be 1.\n",
 181                         rfc);
 182                 fprintf(stderr, "Relocated render command list:\n");
 183                 vc4_dump_cl(screen->simulator_mem_base + exec.ct1ca,
 184                             exec.ct1ea - exec.ct1ca, true);
 185                 abort();
 186         }
 187
 188         ret = vc4_simulator_unpin_bos(&exec);
 189         if (ret)
 190                 return ret;
 191
 192         list_for_each_entry_safe(struct drm_vc4_bo, bo, &exec.unref_list,
 193                                  unref_head) {
 194                 list_del(&bo->unref_head);
 195                 vc4_bo_unreference(&bo->bo);
 196                 free(bo);
 197         }
 198
 199         if (ctex && ctex->bo->simulator_winsys_map) {
 200                 for (int y = 0; y < ctex->base.b.height0; y++) {
 201                         memcpy(ctex->bo->simulator_winsys_map + y * winsys_stride,
 202                                ctex->bo->map + y * sim_stride,
 203                                row_len);
 204                 }
 205         }
 206
 207         return 0;
 208 }
 209
 210 void
 211 vc4_simulator_init(struct vc4_screen *screen)
 212 {
 213         screen->simulator_mem_size = 256 * 1024 * 1024;
 214         screen->simulator_mem_base = ralloc_size(screen,
 215                                                  screen->simulator_mem_size);
 216
 217         /* We supply our own memory so that we can have more aperture
 218          * available (256MB instead of simpenrose's default 64MB).
 219          */
 220         simpenrose_init_hardware_supply_mem(screen->simulator_mem_base,
 221                                             screen->simulator_mem_size);
 222
 223         /* Carve out low memory for tile allocation overflow.  The kernel
 224          * should be automatically handling overflow memory setup on real
 225          * hardware, but for simulation we just get one shot to set up enough
 226          * overflow memory before execution.  This overflow mem will be used
 227          * up over the whole lifetime of simpenrose (not reused on each
 228          * flush), so it had better be big.
 229          */
 230         simpenrose_supply_overflow_mem(0, OVERFLOW_SIZE);
 231 }
 232
 233 #endif /* USE_VC4_SIMULATOR */