src/gallium/drivers/panfrost/pan_screen.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2018-2019 Alyssa Rosenzweig
   4  * Copyright 2018-2019 Collabora, Ltd.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 #ifndef PAN_SCREEN_H
  30 #define PAN_SCREEN_H
  31
  32 #include "pipe/p_screen.h"
  33 #include "pipe/p_defines.h"
  34 #include "renderonly/renderonly.h"
  35 #include "util/u_dynarray.h"
  36 #include "util/bitset.h"
  37
  38 #include <panfrost-misc.h>
  39 #include "pan_allocate.h"
  40
  41 struct panfrost_context;
  42 struct panfrost_resource;
  43 struct panfrost_screen;
  44
  45 /* Flags for allocated memory */
  46
  47 /* This memory region is executable */
  48 #define PAN_ALLOCATE_EXECUTE            (1 << 0)
  49
  50 /* This memory region should be lazily allocated and grow-on-page-fault. Must
  51  * be used in conjunction with INVISIBLE */
  52 #define PAN_ALLOCATE_GROWABLE           (1 << 1)
  53
  54 /* This memory region should not be mapped to the CPU */
  55 #define PAN_ALLOCATE_INVISIBLE          (1 << 2)
  56
  57 /* This memory region will be used for varyings and needs to have the cache
  58  * bits twiddled accordingly */
  59 #define PAN_ALLOCATE_COHERENT_LOCAL     (1 << 3)
  60
  61 /* This region may not be used immediately and will not mmap on allocate
  62  * (semantically distinct from INVISIBLE, which cannot never be mmaped) */
  63 #define PAN_ALLOCATE_DELAY_MMAP         (1 << 4)
  64
  65 /* Transient slab size. This is a balance between fragmentation against cache
  66  * locality and ease of bookkeeping */
  67
  68 #define TRANSIENT_SLAB_PAGES (32) /* 128kb */
  69 #define TRANSIENT_SLAB_SIZE (4096 * TRANSIENT_SLAB_PAGES)
  70
  71 /* Maximum number of transient slabs so we don't need dynamic arrays. Most
  72  * interesting Mali boards are 4GB RAM max, so if the entire RAM was filled
  73  * with transient slabs, you could never exceed (4GB / TRANSIENT_SLAB_SIZE)
  74  * allocations anyway. By capping, we can use a fixed-size bitset for tracking
  75  * free slabs, eliminating quite a bit of complexity. We can pack the free
  76  * state of 8 slabs into a single byte, so for 128kb transient slabs the bitset
  77  * occupies a cheap 4kb of memory */
  78
  79 #define MAX_TRANSIENT_SLABS (1024*1024 / TRANSIENT_SLAB_PAGES)
  80
  81 struct panfrost_screen {
  82         struct pipe_screen base;
  83         int fd;
  84         unsigned gpu_id;
  85
  86         struct renderonly *ro;
  87
  88         /* Memory management is based on subdividing slabs with AMD's allocator */
  89         struct pb_slabs slabs;
  90
  91         /* Transient memory management is based on borrowing fixed-size slabs
  92          * off the screen (loaning them out to the batch). Dynamic array
  93          * container of panfrost_bo */
  94
  95         struct util_dynarray transient_bo;
  96
  97         /* Set of free transient BOs */
  98         BITSET_DECLARE(free_transient, MAX_TRANSIENT_SLABS);
  99
 100         /* While we're busy building up the job for frame N, the GPU is
 101          * still busy executing frame N-1. So hold a reference to
 102          * yesterjob */
 103         int last_fragment_flushed;
 104         struct panfrost_job *last_job;
 105 };
 106
 107 static inline struct panfrost_screen *
 108 pan_screen(struct pipe_screen *p)
 109 {
 110         return (struct panfrost_screen *)p;
 111 }
 112
 113 /* Get a transient BO off the screen given a
 114  * particular index */
 115
 116 static inline struct panfrost_bo *
 117 pan_bo_for_index(struct panfrost_screen *screen, unsigned index)
 118 {
 119         return *(util_dynarray_element(&screen->transient_bo,
 120                                 struct panfrost_bo *, index));
 121 }
 122
 123 void
 124 panfrost_drm_allocate_slab(struct panfrost_screen *screen,
 125                            struct panfrost_memory *mem,
 126                            size_t pages,
 127                            bool same_va,
 128                            int extra_flags,
 129                            int commit_count,
 130                            int extent);
 131 void
 132 panfrost_drm_free_slab(struct panfrost_screen *screen,
 133                        struct panfrost_memory *mem);
 134 struct panfrost_bo *
 135 panfrost_drm_create_bo(struct panfrost_screen *screen, size_t size,
 136                        uint32_t flags);
 137 void
 138 panfrost_drm_release_bo(struct panfrost_screen *screen, struct panfrost_bo *bo);
 139 struct panfrost_bo *
 140 panfrost_drm_import_bo(struct panfrost_screen *screen, int fd);
 141 int
 142 panfrost_drm_export_bo(struct panfrost_screen *screen, const struct panfrost_bo *bo);
 143 int
 144 panfrost_drm_submit_vs_fs_job(struct panfrost_context *ctx, bool has_draws,
 145                               bool is_scanout);
 146 void
 147 panfrost_drm_force_flush_fragment(struct panfrost_context *ctx,
 148                                   struct pipe_fence_handle **fence);
 149 unsigned
 150 panfrost_drm_query_gpu_version(struct panfrost_screen *screen);
 151 int
 152 panfrost_drm_init_context(struct panfrost_context *ctx);
 153 void
 154 panfrost_drm_fence_reference(struct pipe_screen *screen,
 155                              struct pipe_fence_handle **ptr,
 156                              struct pipe_fence_handle *fence);
 157 boolean
 158 panfrost_drm_fence_finish(struct pipe_screen *pscreen,
 159                           struct pipe_context *ctx,
 160                           struct pipe_fence_handle *fence,
 161                           uint64_t timeout);
 162
 163 #endif /* PAN_SCREEN_H */