src/gallium/drivers/vc5/vc5_cl.c

   1 /*
   2  * Copyright © 2014-2017 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 "vc5_context.h"
  27 #include "broadcom/cle/v3d_packet_v33_pack.h"
  28
  29 void
  30 vc5_init_cl(struct vc5_job *job, struct vc5_cl *cl)
  31 {
  32         cl->base = NULL;
  33         cl->next = cl->base;
  34         cl->size = 0;
  35         cl->job = job;
  36 }
  37
  38 uint32_t
  39 vc5_cl_ensure_space(struct vc5_cl *cl, uint32_t space, uint32_t alignment)
  40 {
  41         uint32_t offset = align(cl_offset(cl), alignment);
  42
  43         if (offset + space <= cl->size) {
  44                 cl->next = cl->base + offset;
  45                 return offset;
  46         }
  47
  48         vc5_bo_unreference(&cl->bo);
  49         cl->bo = vc5_bo_alloc(cl->job->vc5->screen, align(space, 4096), "CL");
  50         cl->base = vc5_bo_map(cl->bo);
  51         cl->size = cl->bo->size;
  52         cl->next = cl->base;
  53
  54         return 0;
  55 }
  56
  57 void
  58 vc5_cl_ensure_space_with_branch(struct vc5_cl *cl, uint32_t space)
  59 {
  60         if (cl_offset(cl) + space + cl_packet_length(BRANCH) <= cl->size)
  61                 return;
  62
  63         struct vc5_bo *new_bo = vc5_bo_alloc(cl->job->vc5->screen, 4096, "CL");
  64         assert(space <= new_bo->size);
  65
  66         /* Chain to the new BO from the old one. */
  67         if (cl->bo) {
  68                 cl_emit(cl, BRANCH, branch) {
  69                         branch.address = cl_address(new_bo, 0);
  70                 }
  71                 vc5_bo_unreference(&cl->bo);
  72         } else {
  73                 /* Root the first RCL/BCL BO in the job. */
  74                 vc5_job_add_bo(cl->job, cl->bo);
  75         }
  76
  77         cl->bo = new_bo;
  78         cl->base = vc5_bo_map(cl->bo);
  79         cl->size = cl->bo->size;
  80         cl->next = cl->base;
  81 }
  82
  83 void
  84 vc5_destroy_cl(struct vc5_cl *cl)
  85 {
  86         vc5_bo_unreference(&cl->bo);
  87 }