Subversion Repositories Kolibri OS

Rev

Blame | Last modification | View Log | RSS feed

  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 "vc4_drv.h"
  27.  
  28. int
  29. vc4_cl_validate(struct drm_device *dev, struct vc4_exec_info *exec)
  30. {
  31.         struct drm_vc4_submit_cl *args = exec->args;
  32.         void *temp = NULL;
  33.         void *bin, *render;
  34.         int ret = 0;
  35.         uint32_t bin_offset = 0;
  36.         uint32_t render_offset = bin_offset + args->bin_cl_size;
  37.         uint32_t shader_rec_offset = roundup(render_offset +
  38.                                              args->render_cl_size, 16);
  39.         uint32_t uniforms_offset = shader_rec_offset + args->shader_rec_size;
  40.         uint32_t exec_size = uniforms_offset + args->uniforms_size;
  41.         uint32_t temp_size = exec_size + (sizeof(struct vc4_shader_state) *
  42.                                           args->shader_rec_count);
  43.  
  44.         if (shader_rec_offset < render_offset ||
  45.             uniforms_offset < shader_rec_offset ||
  46.             exec_size < uniforms_offset ||
  47.             args->shader_rec_count >= (UINT_MAX /
  48.                                           sizeof(struct vc4_shader_state)) ||
  49.             temp_size < exec_size) {
  50.                 DRM_ERROR("overflow in exec arguments\n");
  51.                 goto fail;
  52.         }
  53.  
  54.         /* Allocate space where we'll store the copied in user command lists
  55.          * and shader records.
  56.          *
  57.          * We don't just copy directly into the BOs because we need to
  58.          * read the contents back for validation, and I think the
  59.          * bo->vaddr is uncached access.
  60.          */
  61.         temp = kmalloc(temp_size, GFP_KERNEL);
  62.         if (!temp) {
  63.                 DRM_ERROR("Failed to allocate storage for copying "
  64.                           "in bin/render CLs.\n");
  65.                 ret = -ENOMEM;
  66.                 goto fail;
  67.         }
  68.         bin = temp + bin_offset;
  69.         render = temp + render_offset;
  70.         exec->shader_rec_u = temp + shader_rec_offset;
  71.         exec->uniforms_u = temp + uniforms_offset;
  72.         exec->shader_state = temp + exec_size;
  73.         exec->shader_state_size = args->shader_rec_count;
  74.  
  75.         ret = copy_from_user(bin,
  76.                              (void __user *)(uintptr_t)args->bin_cl,
  77.                              args->bin_cl_size);
  78.         if (ret) {
  79.                 DRM_ERROR("Failed to copy in bin cl\n");
  80.                 goto fail;
  81.         }
  82.  
  83.         ret = copy_from_user(render,
  84.                              (void __user *)(uintptr_t)args->render_cl,
  85.                              args->render_cl_size);
  86.         if (ret) {
  87.                 DRM_ERROR("Failed to copy in render cl\n");
  88.                 goto fail;
  89.         }
  90.  
  91.         ret = copy_from_user(exec->shader_rec_u,
  92.                              (void __user *)(uintptr_t)args->shader_rec,
  93.                              args->shader_rec_size);
  94.         if (ret) {
  95.                 DRM_ERROR("Failed to copy in shader recs\n");
  96.                 goto fail;
  97.         }
  98.  
  99.         ret = copy_from_user(exec->uniforms_u,
  100.                              (void __user *)(uintptr_t)args->uniforms,
  101.                              args->uniforms_size);
  102.         if (ret) {
  103.                 DRM_ERROR("Failed to copy in uniforms cl\n");
  104.                 goto fail;
  105.         }
  106.  
  107.         exec->exec_bo = drm_gem_cma_create(dev, exec_size);
  108. #if 0
  109.         if (IS_ERR(exec->exec_bo)) {
  110.                 DRM_ERROR("Couldn't allocate BO for exec\n");
  111.                 ret = PTR_ERR(exec->exec_bo);
  112.                 exec->exec_bo = NULL;
  113.                 goto fail;
  114.         }
  115. #endif
  116.  
  117.         exec->ct0ca = exec->exec_bo->paddr + bin_offset;
  118.         exec->ct1ca = exec->exec_bo->paddr + render_offset;
  119.  
  120.         exec->shader_rec_v = exec->exec_bo->vaddr + shader_rec_offset;
  121.         exec->shader_rec_p = exec->exec_bo->paddr + shader_rec_offset;
  122.         exec->shader_rec_size = args->shader_rec_size;
  123.  
  124.         exec->uniforms_v = exec->exec_bo->vaddr + uniforms_offset;
  125.         exec->uniforms_p = exec->exec_bo->paddr + uniforms_offset;
  126.         exec->uniforms_size = args->uniforms_size;
  127.  
  128.         ret = vc4_validate_cl(dev,
  129.                               exec->exec_bo->vaddr + bin_offset,
  130.                               bin,
  131.                               args->bin_cl_size,
  132.                               true,
  133.                               args->bin_cl_size != 0,
  134.                               exec);
  135.         if (ret)
  136.                 goto fail;
  137.  
  138.         ret = vc4_validate_cl(dev,
  139.                               exec->exec_bo->vaddr + render_offset,
  140.                               render,
  141.                               args->render_cl_size,
  142.                               false,
  143.                               args->bin_cl_size != 0,
  144.                               exec);
  145.         if (ret)
  146.                 goto fail;
  147.  
  148.         ret = vc4_validate_shader_recs(dev, exec);
  149.  
  150. fail:
  151.         kfree(temp);
  152.         return ret;
  153. }
  154.  
  155. #endif /* USE_VC4_SIMULATOR */
  156.