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>
33 #include <sys/types.h>
37 #include "freedreno_drmif.h"
38 #include "freedreno_priv.h"
40 static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
42 struct fd_device * kgsl_device_new(int fd);
43 struct fd_device * msm_device_new(int fd);
46 add_bucket(struct fd_device *dev, int size)
48 unsigned int i = dev->num_buckets;
50 assert(i < ARRAY_SIZE(dev->cache_bucket));
52 list_inithead(&dev->cache_bucket[i].list);
53 dev->cache_bucket[i].size = size;
58 init_cache_buckets(struct fd_device *dev)
60 unsigned long size, cache_max_size = 64 * 1024 * 1024;
62 /* OK, so power of two buckets was too wasteful of memory.
63 * Give 3 other sizes between each power of two, to hopefully
64 * cover things accurately enough. (The alternative is
65 * probably to just go for exact matching of sizes, and assume
66 * that for things like composited window resize the tiled
67 * width/height alignment and rounding of sizes to pages will
68 * get us useful cache hit rates anyway)
70 add_bucket(dev, 4096);
71 add_bucket(dev, 4096 * 2);
72 add_bucket(dev, 4096 * 3);
74 /* Initialize the linked lists for BO reuse cache. */
75 for (size = 4 * 4096; size <= cache_max_size; size *= 2) {
76 add_bucket(dev, size);
77 add_bucket(dev, size + size * 1 / 4);
78 add_bucket(dev, size + size * 2 / 4);
79 add_bucket(dev, size + size * 3 / 4);
83 drm_public struct fd_device * fd_device_new(int fd)
85 struct fd_device *dev;
86 drmVersionPtr version;
88 /* figure out if we are kgsl or msm drm driver: */
89 version = drmGetVersion(fd);
91 ERROR_MSG("cannot get version: %s", strerror(errno));
95 if (!strcmp(version->name, "kgsl")) {
96 DEBUG_MSG("kgsl DRM device");
97 dev = kgsl_device_new(fd);
98 } else if (!strcmp(version->name, "msm")) {
99 DEBUG_MSG("msm DRM device");
100 dev = msm_device_new(fd);
102 ERROR_MSG("unknown device: %s", version->name);
105 drmFreeVersion(version);
110 atomic_set(&dev->refcnt, 1);
112 dev->handle_table = drmHashCreate();
113 dev->name_table = drmHashCreate();
114 init_cache_buckets(dev);
119 /* like fd_device_new() but creates it's own private dup() of the fd
120 * which is close()d when the device is finalized.
122 drm_public struct fd_device * fd_device_new_dup(int fd)
124 struct fd_device *dev = fd_device_new(dup(fd));
130 drm_public struct fd_device * fd_device_ref(struct fd_device *dev)
132 atomic_inc(&dev->refcnt);
136 static void fd_device_del_impl(struct fd_device *dev)
138 fd_cleanup_bo_cache(dev, 0);
139 drmHashDestroy(dev->handle_table);
140 drmHashDestroy(dev->name_table);
143 dev->funcs->destroy(dev);
146 void fd_device_del_locked(struct fd_device *dev)
148 if (!atomic_dec_and_test(&dev->refcnt))
150 fd_device_del_impl(dev);
153 drm_public void fd_device_del(struct fd_device *dev)
155 if (!atomic_dec_and_test(&dev->refcnt))
157 pthread_mutex_lock(&table_lock);
158 fd_device_del_impl(dev);
159 pthread_mutex_unlock(&table_lock);