src/panfrost/encoder/pan_device.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_DEVICE_H
  30 #define PAN_DEVICE_H
  31
  32 #include <xf86drm.h>
  33 #include "renderonly/renderonly.h"
  34 #include "util/u_dynarray.h"
  35 #include "util/bitset.h"
  36 #include "util/set.h"
  37 #include "util/list.h"
  38
  39 #include <panfrost-misc.h>
  40
  41 /* Driver limits */
  42 #define PAN_MAX_CONST_BUFFERS 16
  43
  44 /* Transient slab size. This is a balance between fragmentation against cache
  45  * locality and ease of bookkeeping */
  46
  47 #define TRANSIENT_SLAB_PAGES (32) /* 128kb */
  48 #define TRANSIENT_SLAB_SIZE (4096 * TRANSIENT_SLAB_PAGES)
  49
  50 /* Maximum number of transient slabs so we don't need dynamic arrays. Most
  51  * interesting Mali boards are 4GB RAM max, so if the entire RAM was filled
  52  * with transient slabs, you could never exceed (4GB / TRANSIENT_SLAB_SIZE)
  53  * allocations anyway. By capping, we can use a fixed-size bitset for tracking
  54  * free slabs, eliminating quite a bit of complexity. We can pack the free
  55  * state of 8 slabs into a single byte, so for 128kb transient slabs the bitset
  56  * occupies a cheap 4kb of memory */
  57
  58 #define MAX_TRANSIENT_SLABS (1024*1024 / TRANSIENT_SLAB_PAGES)
  59
  60 /* How many power-of-two levels in the BO cache do we want? 2^12
  61  * minimum chosen as it is the page size that all allocations are
  62  * rounded to */
  63
  64 #define MIN_BO_CACHE_BUCKET (12) /* 2^12 = 4KB */
  65 #define MAX_BO_CACHE_BUCKET (22) /* 2^22 = 4MB */
  66
  67 /* Fencepost problem, hence the off-by-one */
  68 #define NR_BO_CACHE_BUCKETS (MAX_BO_CACHE_BUCKET - MIN_BO_CACHE_BUCKET + 1)
  69
  70 struct panfrost_device {
  71         /* For ralloc */
  72         void *memctx;
  73
  74         int fd;
  75
  76         /* Properties of the GPU in use */
  77         unsigned gpu_id;
  78         unsigned core_count;
  79         unsigned thread_tls_alloc;
  80         unsigned quirks;
  81
  82         drmVersionPtr kernel_version;
  83
  84         struct renderonly *ro;
  85
  86         pthread_mutex_t active_bos_lock;
  87         struct set *active_bos;
  88
  89         struct {
  90                 pthread_mutex_t lock;
  91
  92                 /* List containing all cached BOs sorted in LRU (Least
  93                  * Recently Used) order. This allows us to quickly evict BOs
  94                  * that are more than 1 second old.
  95                  */
  96                 struct list_head lru;
  97
  98                 /* The BO cache is a set of buckets with power-of-two sizes
  99                  * ranging from 2^12 (4096, the page size) to
 100                  * 2^(12 + MAX_BO_CACHE_BUCKETS).
 101                  * Each bucket is a linked list of free panfrost_bo objects. */
 102
 103                 struct list_head buckets[NR_BO_CACHE_BUCKETS];
 104         } bo_cache;
 105 };
 106
 107 #endif