Home | History | Annotate | Line # | Download | only in lib 
      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 <genxml/gen_macros.h>
     30 #include "pan_bo.h"
     31 
     32 #include "util/u_dynarray.h"
     33 
     34 /* Represents grow-only memory. */
     35 
     36 struct pan_pool {
     37         /* Parent device for allocation */
     38         struct panfrost_device *dev;
     39 
     40         /* Label for created BOs */
     41         const char *label;
     42 
     43         /* BO flags to use in the pool */
     44         unsigned create_flags;
     45 
     46         /* Minimum size for allocated BOs. */
     47         size_t slab_size;
     48 };
     49 
     50 static inline void
     51 pan_pool_init(struct pan_pool *pool, struct panfrost_device *dev,
     52               unsigned create_flags, size_t slab_size, const char *label)
     53 {
     54         pool->dev = dev;
     55         pool->create_flags = create_flags;
     56         pool->slab_size = slab_size;
     57         pool->label = label;
     58 }
     59 
     60 /* Represents a fat pointer for GPU-mapped memory, returned from the transient
     61  * allocator and not used for much else */
     62 
     63 struct panfrost_ptr
     64 pan_pool_alloc_aligned(struct pan_pool *pool, size_t sz, unsigned alignment);
     65 
     66 #define PAN_POOL_ALLOCATOR(pool_subclass, alloc_func) \
     67 struct panfrost_ptr \
     68 pan_pool_alloc_aligned(struct pan_pool *p, size_t sz, unsigned alignment) \
     69 { \
     70         pool_subclass *pool = container_of(p, pool_subclass, base); \
     71         return alloc_func(pool, sz, alignment); \
     72 }
     73 
     74 static inline mali_ptr
     75 pan_pool_upload_aligned(struct pan_pool *pool, const void *data, size_t sz, unsigned alignment)
     76 {
     77         struct panfrost_ptr transfer = pan_pool_alloc_aligned(pool, sz, alignment);
     78         memcpy(transfer.cpu, data, sz);
     79         return transfer.gpu;
     80 }
     81 
     82 static inline mali_ptr
     83 pan_pool_upload(struct pan_pool *pool, const void *data, size_t sz)
     84 {
     85         return pan_pool_upload_aligned(pool, data, sz, sz);
     86 }
     87 
     88 struct pan_desc_alloc_info {
     89         unsigned size;
     90         unsigned align;
     91         unsigned nelems;
     92 };
     93 
     94 #define PAN_DESC_ARRAY(count, name) \
     95         { \
     96                 .size = pan_size(name), \
     97                 .align = pan_alignment(name), \
     98                 .nelems = count, \
     99         }
    100 
    101 #define PAN_DESC(name) PAN_DESC_ARRAY(1, name)
    102 
    103 #define PAN_DESC_AGGREGATE(...) \
    104         (struct pan_desc_alloc_info[]) { \
    105                 __VA_ARGS__, \
    106                 { 0 }, \
    107         }
    108 
    109 static inline struct panfrost_ptr
    110 pan_pool_alloc_descs(struct pan_pool *pool,
    111                      const struct pan_desc_alloc_info *descs)
    112 {
    113         unsigned size = 0;
    114         unsigned align = descs[0].align;
    115 
    116         for (unsigned i = 0; descs[i].size; i++) {
    117                 assert(!(size & (descs[i].align - 1)));
    118                 size += descs[i].size * descs[i].nelems;
    119         }
    120 
    121         return pan_pool_alloc_aligned(pool, size, align);
    122 }
    123 
    124 #define pan_pool_alloc_desc(pool, name) \
    125         pan_pool_alloc_descs(pool, PAN_DESC_AGGREGATE(PAN_DESC(name)))
    126 
    127 #define pan_pool_alloc_desc_array(pool, count, name) \
    128         pan_pool_alloc_descs(pool, PAN_DESC_AGGREGATE(PAN_DESC_ARRAY(count, name)))
    129 
    130 #define pan_pool_alloc_desc_aggregate(pool, ...) \
    131         pan_pool_alloc_descs(pool, PAN_DESC_AGGREGATE(__VA_ARGS__))
    132 
    133 #endif
    134