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      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 /* The branching packets are the same across V3D versions. */
     28 #define V3D_VERSION 33
     29 #include "broadcom/common/v3d_macros.h"
     30 #include "broadcom/cle/v3dx_pack.h"
     31 
     32 void
     33 vc5_init_cl(struct vc5_job *job, struct vc5_cl *cl)
     34 {
     35         cl->base = NULL;
     36         cl->next = cl->base;
     37         cl->size = 0;
     38         cl->job = job;
     39 }
     40 
     41 uint32_t
     42 vc5_cl_ensure_space(struct vc5_cl *cl, uint32_t space, uint32_t alignment)
     43 {
     44         uint32_t offset = align(cl_offset(cl), alignment);
     45 
     46         if (offset + space <= cl->size) {
     47                 cl->next = cl->base + offset;
     48                 return offset;
     49         }
     50 
     51         vc5_bo_unreference(&cl->bo);
     52         cl->bo = vc5_bo_alloc(cl->job->vc5->screen, align(space, 4096), "CL");
     53         cl->base = vc5_bo_map(cl->bo);
     54         cl->size = cl->bo->size;
     55         cl->next = cl->base;
     56 
     57         return 0;
     58 }
     59 
     60 void
     61 vc5_cl_ensure_space_with_branch(struct vc5_cl *cl, uint32_t space)
     62 {
     63         if (cl_offset(cl) + space + cl_packet_length(BRANCH) <= cl->size)
     64                 return;
     65 
     66         struct vc5_bo *new_bo = vc5_bo_alloc(cl->job->vc5->screen, 4096, "CL");
     67         assert(space <= new_bo->size);
     68 
     69         /* Chain to the new BO from the old one. */
     70         if (cl->bo) {
     71                 cl_emit(cl, BRANCH, branch) {
     72                         branch.address = cl_address(new_bo, 0);
     73                 }
     74                 vc5_bo_unreference(&cl->bo);
     75         } else {
     76                 /* Root the first RCL/BCL BO in the job. */
     77                 vc5_job_add_bo(cl->job, cl->bo);
     78         }
     79 
     80         cl->bo = new_bo;
     81         cl->base = vc5_bo_map(cl->bo);
     82         cl->size = cl->bo->size;
     83         cl->next = cl->base;
     84 }
     85 
     86 void
     87 vc5_destroy_cl(struct vc5_cl *cl)
     88 {
     89         vc5_bo_unreference(&cl->bo);
     90 }
     91