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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(void *mem_ctx, struct vc4_cl *cl)
     30 {
     31         cl->base = rzalloc_size(mem_ctx, 1); /* TODO: don't use rzalloc */
     32         cl->next = cl->base;
     33         cl->size = 0;
     34 }
     35 
     36 void
     37 cl_ensure_space(struct vc4_cl *cl, uint32_t space)
     38 {
     39         uint32_t offset = cl_offset(cl);
     40 
     41         if (offset + space <= cl->size)
     42                 return;
     43 
     44         uint32_t size = MAX2(cl->size + space, cl->size * 2);
     45 
     46         cl->base = reralloc(ralloc_parent(cl->base), cl->base, uint8_t, size);
     47         cl->size = size;
     48         cl->next = cl->base + offset;
     49 }
     50 
     51 void
     52 vc4_reset_cl(struct vc4_cl *cl)
     53 {
     54         assert(cl->reloc_count == 0);
     55         cl->next = cl->base;
     56 }
     57 
     58 uint32_t
     59 vc4_gem_hindex(struct vc4_job *job, struct vc4_bo *bo)
     60 {
     61         uint32_t hindex;
     62         uint32_t *current_handles = job->bo_handles.base;
     63 
     64         for (hindex = 0; hindex < cl_offset(&job->bo_handles) / 4; hindex++) {
     65                 if (current_handles[hindex] == bo->handle)
     66                         return hindex;
     67         }
     68 
     69         struct vc4_cl_out *out;
     70 
     71         out = cl_start(&job->bo_handles);
     72         cl_u32(&out, bo->handle);
     73         cl_end(&job->bo_handles, out);
     74 
     75         out = cl_start(&job->bo_pointers);
     76         cl_ptr(&out, vc4_bo_reference(bo));
     77         cl_end(&job->bo_pointers, out);
     78 
     79         job->bo_space += bo->size;
     80 
     81         return hindex;
     82 }
     83