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 /* Declare symbol in case we don't link with etnaviv's gallium driver */
34 int etna_mesa_debug __attribute__((weak)) = 0;
35
etna_device_new(int fd)36 struct etna_device *etna_device_new(int fd)
37 {
38 struct etna_device *dev;
39 struct drm_etnaviv_param req = {
40 .param = ETNAVIV_PARAM_SOFTPIN_START_ADDR,
41 };
42 drmVersionPtr version;
43 int ret;
44
45 version = drmGetVersion(fd);
46 if (!version) {
47 ERROR_MSG("cannot get version: %s", strerror(errno));
48 return NULL;
49 }
50
51 dev = calloc(sizeof(*dev), 1);
52 if (!dev) {
53 goto out;
54 }
55
56 dev->drm_version = ETNA_DRM_VERSION(version->version_major,
57 version->version_minor);
58
59 out:
60 drmFreeVersion(version);
61
62 if (!dev)
63 return NULL;
64
65 p_atomic_set(&dev->refcnt, 1);
66 dev->fd = fd;
67 dev->handle_table = _mesa_hash_table_create(NULL, _mesa_hash_u32, _mesa_key_u32_equal);
68 dev->name_table = _mesa_hash_table_create(NULL, _mesa_hash_u32, _mesa_key_u32_equal);
69 etna_bo_cache_init(&dev->bo_cache);
70
71 ret = drmCommandWriteRead(dev->fd, DRM_ETNAVIV_GET_PARAM, &req, sizeof(req));
72 if (!ret && req.value != ~0ULL) {
73 const uint64_t _4GB = 1ull << 32;
74
75 list_inithead(&dev->zombie_list);
76 util_vma_heap_init(&dev->address_space, req.value, _4GB - req.value);
77 dev->use_softpin = 1;
78 }
79
80 return dev;
81 }
82
83 /* like etna_device_new() but creates it's own private dup() of the fd
84 * which is close()d when the device is finalized. */
etna_device_new_dup(int fd)85 struct etna_device *etna_device_new_dup(int fd)
86 {
87 int dup_fd = os_dupfd_cloexec(fd);
88 struct etna_device *dev = etna_device_new(dup_fd);
89
90 if (dev)
91 dev->closefd = 1;
92 else
93 close(dup_fd);
94
95 return dev;
96 }
97
etna_device_ref(struct etna_device * dev)98 struct etna_device *etna_device_ref(struct etna_device *dev)
99 {
100 p_atomic_inc(&dev->refcnt);
101
102 return dev;
103 }
104
etna_device_del_impl(struct etna_device * dev)105 static void etna_device_del_impl(struct etna_device *dev)
106 {
107 etna_bo_cache_cleanup(&dev->bo_cache, 0);
108
109 if (dev->use_softpin) {
110 etna_bo_kill_zombies(dev);
111 util_vma_heap_finish(&dev->address_space);
112 }
113
114 _mesa_hash_table_destroy(dev->handle_table, NULL);
115 _mesa_hash_table_destroy(dev->name_table, NULL);
116
117 if (dev->closefd)
118 close(dev->fd);
119
120 free(dev);
121 }
122
etna_device_del_locked(struct etna_device * dev)123 void etna_device_del_locked(struct etna_device *dev)
124 {
125 simple_mtx_assert_locked(&etna_device_lock);
126
127 if (!p_atomic_dec_zero(&dev->refcnt))
128 return;
129
130 etna_device_del_impl(dev);
131 }
132
etna_device_del(struct etna_device * dev)133 void etna_device_del(struct etna_device *dev)
134 {
135 if (!p_atomic_dec_zero(&dev->refcnt))
136 return;
137
138 simple_mtx_lock(&etna_device_lock);
139 etna_device_del_impl(dev);
140 simple_mtx_unlock(&etna_device_lock);
141 }
142
etna_device_fd(struct etna_device * dev)143 int etna_device_fd(struct etna_device *dev)
144 {
145 return dev->fd;
146 }
147
etnaviv_device_softpin_capable(struct etna_device * dev)148 bool etnaviv_device_softpin_capable(struct etna_device *dev)
149 {
150 return !!dev->use_softpin;
151 }
152
etnaviv_device_version(struct etna_device * dev)153 uint32_t etnaviv_device_version(struct etna_device *dev)
154 {
155 return dev->drm_version;
156 }
157