src/panfrost/encoder/pan_device.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2018-2019 Alyssa Rosenzweig
   4  * Copyright 2018-2019 Collabora, Ltd.
   5  * Copyright © 2015 Intel Corporation
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the
  10  * "Software"), to deal in the Software without restriction, including
  11  * without limitation the rights to use, copy, modify, merge, publish,
  12  * distribute, sub license, and/or sell copies of the Software, and to
  13  * permit persons to whom the Software is furnished to do so, subject to
  14  * the following conditions:
  15  *
  16  * The above copyright notice and this permission notice (including the
  17  * next paragraph) shall be included in all copies or substantial portions
  18  * of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  21  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  23  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  24  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  25  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  26  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27  *
  28  **************************************************************************/
  29
  30 #ifndef PAN_DEVICE_H
  31 #define PAN_DEVICE_H
  32
  33 #include <xf86drm.h>
  34 #include "renderonly/renderonly.h"
  35 #include "util/u_dynarray.h"
  36 #include "util/bitset.h"
  37 #include "util/set.h"
  38 #include "util/list.h"
  39 #include "util/sparse_array.h"
  40
  41 #include <panfrost-misc.h>
  42
  43 /* Driver limits */
  44 #define PAN_MAX_CONST_BUFFERS 16
  45
  46 /* Transient slab size. This is a balance between fragmentation against cache
  47  * locality and ease of bookkeeping */
  48
  49 #define TRANSIENT_SLAB_PAGES (32) /* 128kb */
  50 #define TRANSIENT_SLAB_SIZE (4096 * TRANSIENT_SLAB_PAGES)
  51
  52 /* Maximum number of transient slabs so we don't need dynamic arrays. Most
  53  * interesting Mali boards are 4GB RAM max, so if the entire RAM was filled
  54  * with transient slabs, you could never exceed (4GB / TRANSIENT_SLAB_SIZE)
  55  * allocations anyway. By capping, we can use a fixed-size bitset for tracking
  56  * free slabs, eliminating quite a bit of complexity. We can pack the free
  57  * state of 8 slabs into a single byte, so for 128kb transient slabs the bitset
  58  * occupies a cheap 4kb of memory */
  59
  60 #define MAX_TRANSIENT_SLABS (1024*1024 / TRANSIENT_SLAB_PAGES)
  61
  62 /* How many power-of-two levels in the BO cache do we want? 2^12
  63  * minimum chosen as it is the page size that all allocations are
  64  * rounded to */
  65
  66 #define MIN_BO_CACHE_BUCKET (12) /* 2^12 = 4KB */
  67 #define MAX_BO_CACHE_BUCKET (22) /* 2^22 = 4MB */
  68
  69 /* Fencepost problem, hence the off-by-one */
  70 #define NR_BO_CACHE_BUCKETS (MAX_BO_CACHE_BUCKET - MIN_BO_CACHE_BUCKET + 1)
  71
  72 struct panfrost_device {
  73         /* For ralloc */
  74         void *memctx;
  75
  76         int fd;
  77
  78         /* Properties of the GPU in use */
  79         unsigned gpu_id;
  80         unsigned core_count;
  81         unsigned thread_tls_alloc;
  82         unsigned quirks;
  83
  84         /* debug flags, see pan_util.h how to interpret */
  85         unsigned debug;
  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         pthread_mutex_t bo_map_lock;
  95         struct util_sparse_array bo_map;
  96
  97         struct {
  98                 pthread_mutex_t lock;
  99
 100                 /* List containing all cached BOs sorted in LRU (Least
 101                  * Recently Used) order. This allows us to quickly evict BOs
 102                  * that are more than 1 second old.
 103                  */
 104                 struct list_head lru;
 105
 106                 /* The BO cache is a set of buckets with power-of-two sizes
 107                  * ranging from 2^12 (4096, the page size) to
 108                  * 2^(12 + MAX_BO_CACHE_BUCKETS).
 109                  * Each bucket is a linked list of free panfrost_bo objects. */
 110
 111                 struct list_head buckets[NR_BO_CACHE_BUCKETS];
 112         } bo_cache;
 113 };
 114
 115 void
 116 panfrost_open_device(void *memctx, int fd, struct panfrost_device *dev);
 117
 118 void
 119 panfrost_close_device(struct panfrost_device *dev);
 120
 121 static inline struct panfrost_bo *
 122 pan_lookup_bo(struct panfrost_device *dev, uint32_t gem_handle)
 123 {
 124         return util_sparse_array_get(&dev->bo_map, gem_handle);
 125 }
 126
 127 #endif