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 #include "util/os_file.h"
29
30 #include "etnaviv_priv.h"
31 #include "etnaviv_drmif.h"
32
33 static pthread_mutex_t etna_drm_table_lock = PTHREAD_MUTEX_INITIALIZER;
34
etna_device_new(int fd)35 struct etna_device *etna_device_new(int fd)
36 {
37 struct etna_device *dev = calloc(sizeof(*dev), 1);
38 struct drm_etnaviv_param req = {
39 .param = ETNAVIV_PARAM_SOFTPIN_START_ADDR,
40 };
41 int ret;
42
43 if (!dev)
44 return NULL;
45
46 p_atomic_set(&dev->refcnt, 1);
47 dev->fd = fd;
48 dev->handle_table = _mesa_hash_table_create(NULL, _mesa_hash_u32, _mesa_key_u32_equal);
49 dev->name_table = _mesa_hash_table_create(NULL, _mesa_hash_u32, _mesa_key_u32_equal);
50 etna_bo_cache_init(&dev->bo_cache);
51
52 ret = drmCommandWriteRead(dev->fd, DRM_ETNAVIV_GET_PARAM, &req, sizeof(req));
53 if (!ret && req.value != ~0ULL) {
54 const uint64_t _4GB = 1ull << 32;
55
56 util_vma_heap_init(&dev->address_space, req.value, _4GB - req.value);
57 dev->use_softpin = 1;
58 }
59
60 return dev;
61 }
62
63 /* like etna_device_new() but creates it's own private dup() of the fd
64 * which is close()d when the device is finalized. */
etna_device_new_dup(int fd)65 struct etna_device *etna_device_new_dup(int fd)
66 {
67 int dup_fd = os_dupfd_cloexec(fd);
68 struct etna_device *dev = etna_device_new(dup_fd);
69
70 if (dev)
71 dev->closefd = 1;
72 else
73 close(dup_fd);
74
75 return dev;
76 }
77
etna_device_ref(struct etna_device * dev)78 struct etna_device *etna_device_ref(struct etna_device *dev)
79 {
80 p_atomic_inc(&dev->refcnt);
81
82 return dev;
83 }
84
etna_device_del_impl(struct etna_device * dev)85 static void etna_device_del_impl(struct etna_device *dev)
86 {
87 etna_bo_cache_cleanup(&dev->bo_cache, 0);
88
89 if (dev->use_softpin)
90 util_vma_heap_finish(&dev->address_space);
91
92 _mesa_hash_table_destroy(dev->handle_table, NULL);
93 _mesa_hash_table_destroy(dev->name_table, NULL);
94
95 if (dev->closefd)
96 close(dev->fd);
97
98 free(dev);
99 }
100
etna_device_del_locked(struct etna_device * dev)101 void etna_device_del_locked(struct etna_device *dev)
102 {
103 if (!p_atomic_dec_zero(&dev->refcnt))
104 return;
105
106 etna_device_del_impl(dev);
107 }
108
etna_device_del(struct etna_device * dev)109 void etna_device_del(struct etna_device *dev)
110 {
111 if (!p_atomic_dec_zero(&dev->refcnt))
112 return;
113
114 pthread_mutex_lock(&etna_drm_table_lock);
115 etna_device_del_impl(dev);
116 pthread_mutex_unlock(&etna_drm_table_lock);
117 }
118
etna_device_fd(struct etna_device * dev)119 int etna_device_fd(struct etna_device *dev)
120 {
121 return dev->fd;
122 }
123
etnaviv_device_softpin_capable(struct etna_device * dev)124 bool etnaviv_device_softpin_capable(struct etna_device *dev)
125 {
126 return !!dev->use_softpin;
127 }
128