src/panfrost/lib/pan_pool.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_POOL_H__
  26 #define __PAN_POOL_H__
  27
  28 #include <stddef.h>
  29 #include <midgard_pack.h>
  30
  31 #include "util/u_dynarray.h"
  32
  33 /* Represents a pool of memory that can only grow, used to allocate objects
  34  * with the same lifetime as the pool itself. In OpenGL, a pool is owned by the
  35  * batch for transient structures. In Vulkan, it may be owned by e.g. the
  36  * command pool */
  37
  38 struct pan_pool {
  39         /* Parent device for allocation */
  40         struct panfrost_device *dev;
  41
  42         /* BOs allocated by this pool */
  43         struct util_dynarray bos;
  44
  45         /* Current transient BO */
  46         struct panfrost_bo *transient_bo;
  47
  48         /* Within the topmost transient BO, how much has been used? */
  49         unsigned transient_offset;
  50
  51         /* BO flags to use in the pool */
  52         unsigned create_flags;
  53 };
  54
  55 void
  56 panfrost_pool_init(struct pan_pool *pool, void *memctx,
  57                    struct panfrost_device *dev, unsigned create_flags,
  58                    bool prealloc);
  59
  60 void
  61 panfrost_pool_cleanup(struct pan_pool *pool);
  62
  63 static inline unsigned
  64 panfrost_pool_num_bos(struct pan_pool *pool)
  65 {
  66         return util_dynarray_num_elements(&pool->bos, struct panfrost_bo *);
  67 }
  68
  69 void
  70 panfrost_pool_get_bo_handles(struct pan_pool *pool, uint32_t *handles);
  71
  72 /* Represents a fat pointer for GPU-mapped memory, returned from the transient
  73  * allocator and not used for much else */
  74
  75 struct panfrost_transfer {
  76         uint8_t *cpu;
  77         mali_ptr gpu;
  78 };
  79
  80 struct panfrost_transfer
  81 panfrost_pool_alloc_aligned(struct pan_pool *pool, size_t sz, unsigned alignment);
  82
  83 /* Default to self-alignment */
  84
  85 static inline struct panfrost_transfer
  86 panfrost_pool_alloc(struct pan_pool *pool, size_t sz)
  87 {
  88         assert(sz == util_next_power_of_two(sz));
  89         return panfrost_pool_alloc_aligned(pool, sz, sz);
  90 }
  91
  92 struct panfrost_transfer
  93 panfrost_pool_alloc(struct pan_pool *pool, size_t sz);
  94
  95 mali_ptr
  96 panfrost_pool_upload(struct pan_pool *pool, const void *data, size_t sz);
  97
  98 mali_ptr
  99 panfrost_pool_upload_aligned(struct pan_pool *pool, const void *data, size_t sz, unsigned alignment);
 100
 101 #endif