src/gallium/drivers/vc4/vc4_cl.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 #include "util/u_math.h"
  25 #include "util/ralloc.h"
  26 #include "vc4_context.h"
  27
  28 void
  29 vc4_init_cl(struct vc4_job *job, struct vc4_cl *cl)
  30 {
  31         cl->base = rzalloc_size(job, 1); /* TODO: don't use rzalloc */
  32         cl->next = cl->base;
  33         cl->size = 0;
  34         cl->job = job;
  35 }
  36
  37 void
  38 cl_ensure_space(struct vc4_cl *cl, uint32_t space)
  39 {
  40         uint32_t offset = cl_offset(cl);
  41
  42         if (offset + space <= cl->size)
  43                 return;
  44
  45         uint32_t size = MAX2(cl->size + space, cl->size * 2);
  46
  47         cl->base = reralloc(ralloc_parent(cl->base), cl->base, uint8_t, size);
  48         cl->size = size;
  49         cl->next = cl->base + offset;
  50 }
  51
  52 void
  53 vc4_reset_cl(struct vc4_cl *cl)
  54 {
  55         assert(cl->reloc_count == 0);
  56         cl->next = cl->base;
  57 }
  58
  59 uint32_t
  60 vc4_gem_hindex(struct vc4_job *job, struct vc4_bo *bo)
  61 {
  62         uint32_t hindex;
  63         uint32_t *current_handles = job->bo_handles.base;
  64         uint32_t cl_hindex_count = cl_offset(&job->bo_handles) / 4;
  65         uint32_t last_hindex = bo->last_hindex; /* volatile read! */
  66
  67         if (last_hindex < cl_hindex_count &&
  68             current_handles[last_hindex] == bo->handle) {
  69                 return last_hindex;
  70         }
  71
  72         for (hindex = 0; hindex < cl_hindex_count; hindex++) {
  73                 if (current_handles[hindex] == bo->handle) {
  74                         bo->last_hindex = hindex;
  75                         return hindex;
  76                 }
  77         }
  78
  79         struct vc4_cl_out *out;
  80
  81         out = cl_start(&job->bo_handles);
  82         cl_u32(&out, bo->handle);
  83         cl_end(&job->bo_handles, out);
  84
  85         out = cl_start(&job->bo_pointers);
  86         cl_ptr(&out, vc4_bo_reference(bo));
  87         cl_end(&job->bo_pointers, out);
  88
  89         job->bo_space += bo->size;
  90
  91         bo->last_hindex = hindex;
  92         return hindex;
  93 }