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