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 <xf86drm.h>
  33 #include "pipe/p_screen.h"
  34 #include "pipe/p_defines.h"
  35 #include "renderonly/renderonly.h"
  36 #include "util/u_dynarray.h"
  37 #include "util/bitset.h"
  38 #include "util/set.h"
  39
  40 #include <panfrost-misc.h>
  41 #include "pan_allocate.h"
  42
  43 struct panfrost_batch;
  44 struct panfrost_context;
  45 struct panfrost_resource;
  46 struct panfrost_screen;
  47
  48 /* Driver limits */
  49 #define PAN_MAX_CONST_BUFFERS 16
  50
  51 /* Transient slab size. This is a balance between fragmentation against cache
  52  * locality and ease of bookkeeping */
  53
  54 #define TRANSIENT_SLAB_PAGES (32) /* 128kb */
  55 #define TRANSIENT_SLAB_SIZE (4096 * TRANSIENT_SLAB_PAGES)
  56
  57 /* Maximum number of transient slabs so we don't need dynamic arrays. Most
  58  * interesting Mali boards are 4GB RAM max, so if the entire RAM was filled
  59  * with transient slabs, you could never exceed (4GB / TRANSIENT_SLAB_SIZE)
  60  * allocations anyway. By capping, we can use a fixed-size bitset for tracking
  61  * free slabs, eliminating quite a bit of complexity. We can pack the free
  62  * state of 8 slabs into a single byte, so for 128kb transient slabs the bitset
  63  * occupies a cheap 4kb of memory */
  64
  65 #define MAX_TRANSIENT_SLABS (1024*1024 / TRANSIENT_SLAB_PAGES)
  66
  67 /* How many power-of-two levels in the BO cache do we want? 2^12
  68  * minimum chosen as it is the page size that all allocations are
  69  * rounded to */
  70
  71 #define MIN_BO_CACHE_BUCKET (12) /* 2^12 = 4KB */
  72 #define MAX_BO_CACHE_BUCKET (22) /* 2^22 = 4MB */
  73
  74 /* Fencepost problem, hence the off-by-one */
  75 #define NR_BO_CACHE_BUCKETS (MAX_BO_CACHE_BUCKET - MIN_BO_CACHE_BUCKET + 1)
  76
  77 struct panfrost_screen {
  78         struct pipe_screen base;
  79         int fd;
  80
  81         /* Properties of the GPU in use */
  82         unsigned gpu_id;
  83         unsigned core_count;
  84         unsigned thread_tls_alloc;
  85         unsigned quirks;
  86
  87         drmVersionPtr kernel_version;
  88
  89         struct renderonly *ro;
  90
  91         pthread_mutex_t active_bos_lock;
  92         struct set *active_bos;
  93
  94         struct {
  95                 pthread_mutex_t lock;
  96
  97                 /* List containing all cached BOs sorted in LRU (Least
  98                  * Recently Used) order. This allows us to quickly evict BOs
  99                  * that are more than 1 second old.
 100                  */
 101                 struct list_head lru;
 102
 103                 /* The BO cache is a set of buckets with power-of-two sizes
 104                  * ranging from 2^12 (4096, the page size) to
 105                  * 2^(12 + MAX_BO_CACHE_BUCKETS).
 106                  * Each bucket is a linked list of free panfrost_bo objects. */
 107
 108                 struct list_head buckets[NR_BO_CACHE_BUCKETS];
 109         } bo_cache;
 110 };
 111
 112 static inline struct panfrost_screen *
 113 pan_screen(struct pipe_screen *p)
 114 {
 115         return (struct panfrost_screen *)p;
 116 }
 117
 118 struct panfrost_fence *
 119 panfrost_fence_create(struct panfrost_context *ctx,
 120                       struct util_dynarray *fences);
 121
 122 #endif /* PAN_SCREEN_H */