1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
4 * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 * Rob Clark <robclark@freedesktop.org>
29 #include <sys/types.h>
33 #include "freedreno_drmif.h"
34 #include "freedreno_priv.h"
36 static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
37 static void * dev_table;
39 struct fd_device * kgsl_device_new(int fd);
40 struct fd_device * msm_device_new(int fd);
43 add_bucket(struct fd_device *dev, int size)
45 unsigned int i = dev->num_buckets;
47 assert(i < ARRAY_SIZE(dev->cache_bucket));
49 list_inithead(&dev->cache_bucket[i].list);
50 dev->cache_bucket[i].size = size;
55 init_cache_buckets(struct fd_device *dev)
57 unsigned long size, cache_max_size = 64 * 1024 * 1024;
59 /* OK, so power of two buckets was too wasteful of memory.
60 * Give 3 other sizes between each power of two, to hopefully
61 * cover things accurately enough. (The alternative is
62 * probably to just go for exact matching of sizes, and assume
63 * that for things like composited window resize the tiled
64 * width/height alignment and rounding of sizes to pages will
65 * get us useful cache hit rates anyway)
67 add_bucket(dev, 4096);
68 add_bucket(dev, 4096 * 2);
69 add_bucket(dev, 4096 * 3);
71 /* Initialize the linked lists for BO reuse cache. */
72 for (size = 4 * 4096; size <= cache_max_size; size *= 2) {
73 add_bucket(dev, size);
74 add_bucket(dev, size + size * 1 / 4);
75 add_bucket(dev, size + size * 2 / 4);
76 add_bucket(dev, size + size * 3 / 4);
80 static struct fd_device * fd_device_new_impl(int fd)
82 struct fd_device *dev;
83 drmVersionPtr version;
85 /* figure out if we are kgsl or msm drm driver: */
86 version = drmGetVersion(fd);
88 ERROR_MSG("cannot get version: %s", strerror(errno));
92 if (!strcmp(version->name, "kgsl")) {
93 DEBUG_MSG("kgsl DRM device");
94 dev = kgsl_device_new(fd);
95 } else if (!strcmp(version->name, "msm")) {
96 DEBUG_MSG("msm DRM device");
97 dev = msm_device_new(fd);
99 ERROR_MSG("unknown device: %s", version->name);
106 atomic_set(&dev->refcnt, 1);
108 dev->handle_table = drmHashCreate();
109 dev->name_table = drmHashCreate();
110 init_cache_buckets(dev);
115 struct fd_device * fd_device_new(int fd)
117 struct fd_device *dev = NULL;
120 pthread_mutex_lock(&table_lock);
123 dev_table = drmHashCreate();
125 if (drmHashLookup(dev_table, key, (void **)&dev)) {
126 dev = fd_device_new_impl(fd);
128 drmHashInsert(dev_table, key, dev);
130 dev = fd_device_ref(dev);
133 pthread_mutex_unlock(&table_lock);
138 /* like fd_device_new() but creates it's own private dup() of the fd
139 * which is close()d when the device is finalized.
141 struct fd_device * fd_device_new_dup(int fd)
143 struct fd_device *dev = fd_device_new(dup(fd));
148 struct fd_device * fd_device_ref(struct fd_device *dev)
150 atomic_inc(&dev->refcnt);
154 static void fd_device_del_impl(struct fd_device *dev)
156 fd_cleanup_bo_cache(dev, 0);
157 drmHashDestroy(dev->handle_table);
158 drmHashDestroy(dev->name_table);
159 drmHashDelete(dev_table, dev->fd);
162 dev->funcs->destroy(dev);
165 void fd_device_del_locked(struct fd_device *dev)
167 if (!atomic_dec_and_test(&dev->refcnt))
169 fd_device_del_impl(dev);
172 void fd_device_del(struct fd_device *dev)
174 if (!atomic_dec_and_test(&dev->refcnt))
176 pthread_mutex_lock(&table_lock);
177 fd_device_del_impl(dev);
178 pthread_mutex_unlock(&table_lock);