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      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 }
     94