b1fc6b91c89a070b73f87cf1ba03d575e986a983
[mesa.git] / src / etnaviv / drm / etnaviv_device.c
1 /*
2 * Copyright (C) 2014 Etnaviv Project
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 * Christian Gmeiner <christian.gmeiner@gmail.com>
25 */
26
27 #include "util/hash_table.h"
28
29 #include "etnaviv_priv.h"
30 #include "etnaviv_drmif.h"
31
32 static pthread_mutex_t etna_drm_table_lock = PTHREAD_MUTEX_INITIALIZER;
33
34 struct etna_device *etna_device_new(int fd)
35 {
36 struct etna_device *dev = calloc(sizeof(*dev), 1);
37 struct drm_etnaviv_param req = {
38 .param = ETNAVIV_PARAM_SOFTPIN_START_ADDR,
39 };
40 int ret;
41
42 if (!dev)
43 return NULL;
44
45 p_atomic_set(&dev->refcnt, 1);
46 dev->fd = fd;
47 dev->handle_table = _mesa_hash_table_create(NULL, _mesa_hash_u32, _mesa_key_u32_equal);
48 dev->name_table = _mesa_hash_table_create(NULL, _mesa_hash_u32, _mesa_key_u32_equal);
49 etna_bo_cache_init(&dev->bo_cache);
50
51 ret = drmCommandWriteRead(dev->fd, DRM_ETNAVIV_GET_PARAM, &req, sizeof(req));
52 if (!ret && req.value != ~0ULL) {
53 const uint64_t _4GB = 1ull << 32;
54
55 util_vma_heap_init(&dev->address_space, req.value, _4GB - req.value);
56 dev->use_softpin = 1;
57 }
58
59 return dev;
60 }
61
62 /* like etna_device_new() but creates it's own private dup() of the fd
63 * which is close()d when the device is finalized. */
64 struct etna_device *etna_device_new_dup(int fd)
65 {
66 int dup_fd = dup(fd);
67 struct etna_device *dev = etna_device_new(dup_fd);
68
69 if (dev)
70 dev->closefd = 1;
71 else
72 close(dup_fd);
73
74 return dev;
75 }
76
77 struct etna_device *etna_device_ref(struct etna_device *dev)
78 {
79 p_atomic_inc(&dev->refcnt);
80
81 return dev;
82 }
83
84 static void etna_device_del_impl(struct etna_device *dev)
85 {
86 etna_bo_cache_cleanup(&dev->bo_cache, 0);
87
88 if (dev->use_softpin)
89 util_vma_heap_finish(&dev->address_space);
90
91 _mesa_hash_table_destroy(dev->handle_table, NULL);
92 _mesa_hash_table_destroy(dev->name_table, NULL);
93
94 if (dev->closefd)
95 close(dev->fd);
96
97 free(dev);
98 }
99
100 void etna_device_del_locked(struct etna_device *dev)
101 {
102 if (!p_atomic_dec_zero(&dev->refcnt))
103 return;
104
105 etna_device_del_impl(dev);
106 }
107
108 void etna_device_del(struct etna_device *dev)
109 {
110 if (!p_atomic_dec_zero(&dev->refcnt))
111 return;
112
113 pthread_mutex_lock(&etna_drm_table_lock);
114 etna_device_del_impl(dev);
115 pthread_mutex_unlock(&etna_drm_table_lock);
116 }
117
118 int etna_device_fd(struct etna_device *dev)
119 {
120 return dev->fd;
121 }
122
123 bool etnaviv_device_softpin_capable(struct etna_device *dev)
124 {
125 return !!dev->use_softpin;
126 }