src/panfrost/encoder/pan_bo.h

   1 /*
   2  * © Copyright 2019 Alyssa Rosenzweig
   3  * © Copyright 2019 Collabora, Ltd.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  */
  25
  26 #ifndef __PAN_BO_H__
  27 #define __PAN_BO_H__
  28
  29 #include <panfrost-misc.h>
  30 #include "util/list.h"
  31 #include "pan_device.h"
  32
  33 /* Flags for allocated memory */
  34
  35 /* This memory region is executable */
  36 #define PAN_BO_EXECUTE            (1 << 0)
  37
  38 /* This memory region should be lazily allocated and grow-on-page-fault. Must
  39  * be used in conjunction with INVISIBLE */
  40 #define PAN_BO_GROWABLE           (1 << 1)
  41
  42 /* This memory region should not be mapped to the CPU */
  43 #define PAN_BO_INVISIBLE          (1 << 2)
  44
  45 /* This memory region will be used for varyings and needs to have the cache
  46  * bits twiddled accordingly */
  47 #define PAN_BO_COHERENT_LOCAL     (1 << 3)
  48
  49 /* This region may not be used immediately and will not mmap on allocate
  50  * (semantically distinct from INVISIBLE, which cannot never be mmaped) */
  51 #define PAN_BO_DELAY_MMAP         (1 << 4)
  52
  53 /* Some BOs shouldn't be returned back to the reuse BO cache, use this flag to
  54  * let the BO logic know about this contraint. */
  55 #define PAN_BO_DONT_REUSE         (1 << 5)
  56
  57 /* BO has been imported */
  58 #define PAN_BO_IMPORTED           (1 << 6)
  59
  60 /* BO has been exported */
  61 #define PAN_BO_EXPORTED           (1 << 7)
  62
  63 /* GPU access flags */
  64
  65 /* BO is either shared (can be accessed by more than one GPU batch) or private
  66  * (reserved by a specific GPU job). */
  67 #define PAN_BO_ACCESS_PRIVATE         (0 << 0)
  68 #define PAN_BO_ACCESS_SHARED          (1 << 0)
  69
  70 /* BO is being read/written by the GPU */
  71 #define PAN_BO_ACCESS_READ            (1 << 1)
  72 #define PAN_BO_ACCESS_WRITE           (1 << 2)
  73 #define PAN_BO_ACCESS_RW              (PAN_BO_ACCESS_READ | PAN_BO_ACCESS_WRITE)
  74
  75 /* BO is accessed by the vertex/tiler job. */
  76 #define PAN_BO_ACCESS_VERTEX_TILER    (1 << 3)
  77
  78 /* BO is accessed by the fragment job. */
  79 #define PAN_BO_ACCESS_FRAGMENT        (1 << 4)
  80
  81 struct panfrost_bo {
  82         /* Must be first for casting */
  83         struct list_head bucket_link;
  84
  85         /* Used to link the BO to the BO cache LRU list. */
  86         struct list_head lru_link;
  87
  88         /* Store the time this BO was use last, so the BO cache logic can evict
  89          * stale BOs.
  90          */
  91         time_t last_used;
  92
  93         /* Atomic reference count */
  94         int32_t refcnt;
  95
  96         struct panfrost_device *dev;
  97
  98         /* Mapping for the entire object (all levels) */
  99         uint8_t *cpu;
 100
 101         /* GPU address for the object */
 102         mali_ptr gpu;
 103
 104         /* Size of all entire trees */
 105         size_t size;
 106
 107         int gem_handle;
 108
 109         uint32_t flags;
 110
 111         /* Combination of PAN_BO_ACCESS_{READ,WRITE} flags encoding pending
 112          * GPU accesses to this BO. Useful to avoid calling the WAIT_BO ioctl
 113          * when the BO is idle.
 114          */
 115         uint32_t gpu_access;
 116 };
 117
 118 bool
 119 panfrost_bo_wait(struct panfrost_bo *bo, int64_t timeout_ns,
 120                  uint32_t access_type);
 121 void
 122 panfrost_bo_reference(struct panfrost_bo *bo);
 123 void
 124 panfrost_bo_unreference(struct panfrost_bo *bo);
 125 struct panfrost_bo *
 126 panfrost_bo_create(struct panfrost_device *dev, size_t size,
 127                    uint32_t flags);
 128 void
 129 panfrost_bo_mmap(struct panfrost_bo *bo);
 130 struct panfrost_bo *
 131 panfrost_bo_import(struct panfrost_device *dev, int fd);
 132 int
 133 panfrost_bo_export(struct panfrost_bo *bo);
 134 void
 135 panfrost_bo_cache_evict_all(struct panfrost_device *dev);
 136
 137 #endif /* __PAN_BO_H__ */