src/gallium/drivers/panfrost/pan_allocate.h

   1 /*
   2  * © Copyright 2017-2018 Alyssa Rosenzweig
   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 FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  */
  24
  25 #ifndef __PAN_ALLOCATE_H__
  26 #define __PAN_ALLOCATE_H__
  27
  28 #include <unistd.h>
  29 #include <sys/mman.h>
  30 #include <stdbool.h>
  31
  32 #include <panfrost-misc.h>
  33
  34 #include "util/list.h"
  35
  36 struct panfrost_context;
  37
  38 /* Represents a fat pointer for GPU-mapped memory, returned from the transient
  39  * allocator and not used for much else */
  40
  41 struct panfrost_transfer {
  42         uint8_t *cpu;
  43         mali_ptr gpu;
  44 };
  45
  46 struct panfrost_bo {
  47         /* Must be first for casting */
  48         struct list_head link;
  49
  50         struct pipe_reference reference;
  51
  52         /* Mapping for the entire object (all levels) */
  53         uint8_t *cpu;
  54
  55         /* GPU address for the object */
  56         mali_ptr gpu;
  57
  58         /* Size of all entire trees */
  59         size_t size;
  60
  61         int gem_handle;
  62
  63         uint32_t flags;
  64 };
  65
  66 struct panfrost_memory {
  67         /* Backing for the slab in memory */
  68         struct panfrost_bo *bo;
  69         int stack_bottom;
  70 };
  71
  72 struct panfrost_transfer
  73 panfrost_allocate_transient(struct panfrost_context *ctx, size_t sz);
  74
  75 mali_ptr
  76 panfrost_upload_transient(struct panfrost_context *ctx, const void *data, size_t sz);
  77
  78 static inline mali_ptr
  79 panfrost_reserve(struct panfrost_memory *mem, size_t sz)
  80 {
  81         mem->stack_bottom += sz;
  82         return mem->bo->gpu + (mem->stack_bottom - sz);
  83 }
  84
  85 #endif /* __PAN_ALLOCATE_H__ */