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
33struct etna_device *etna_device_new(int fd)
34{
35	struct etna_device *dev;
36	struct drm_etnaviv_param req = {
37		.param = ETNAVIV_PARAM_SOFTPIN_START_ADDR,
38	};
39	drmVersionPtr version;
40	int ret;
41
42	version = drmGetVersion(fd);
43	if (!version) {
44		ERROR_MSG("cannot get version: %s", strerror(errno));
45		return NULL;
46	}
47
48	dev = calloc(sizeof(*dev), 1);
49	if (!dev) {
50		goto out;
51	}
52
53	dev->drm_version = ETNA_DRM_VERSION(version->version_major,
54					    version->version_minor);
55
56out:
57	drmFreeVersion(version);
58
59	if (!dev)
60		return NULL;
61
62	p_atomic_set(&dev->refcnt, 1);
63	dev->fd = fd;
64	dev->handle_table = _mesa_hash_table_create(NULL, _mesa_hash_u32, _mesa_key_u32_equal);
65	dev->name_table = _mesa_hash_table_create(NULL, _mesa_hash_u32, _mesa_key_u32_equal);
66	etna_bo_cache_init(&dev->bo_cache);
67
68	ret = drmCommandWriteRead(dev->fd, DRM_ETNAVIV_GET_PARAM, &req, sizeof(req));
69	if (!ret && req.value != ~0ULL) {
70		const uint64_t _4GB = 1ull << 32;
71
72		util_vma_heap_init(&dev->address_space, req.value, _4GB - req.value);
73		dev->use_softpin = 1;
74	}
75
76	return dev;
77}
78
79/* like etna_device_new() but creates it's own private dup() of the fd
80 * which is close()d when the device is finalized. */
81struct etna_device *etna_device_new_dup(int fd)
82{
83	int dup_fd = os_dupfd_cloexec(fd);
84	struct etna_device *dev = etna_device_new(dup_fd);
85
86	if (dev)
87		dev->closefd = 1;
88	else
89		close(dup_fd);
90
91	return dev;
92}
93
94struct etna_device *etna_device_ref(struct etna_device *dev)
95{
96	p_atomic_inc(&dev->refcnt);
97
98	return dev;
99}
100
101static void etna_device_del_impl(struct etna_device *dev)
102{
103	etna_bo_cache_cleanup(&dev->bo_cache, 0);
104
105	if (dev->use_softpin)
106		util_vma_heap_finish(&dev->address_space);
107
108	_mesa_hash_table_destroy(dev->handle_table, NULL);
109	_mesa_hash_table_destroy(dev->name_table, NULL);
110
111	if (dev->closefd)
112		close(dev->fd);
113
114	free(dev);
115}
116
117void etna_device_del_locked(struct etna_device *dev)
118{
119	simple_mtx_assert_locked(&etna_drm_table_lock);
120
121	if (!p_atomic_dec_zero(&dev->refcnt))
122		return;
123
124	etna_device_del_impl(dev);
125}
126
127void etna_device_del(struct etna_device *dev)
128{
129	if (!p_atomic_dec_zero(&dev->refcnt))
130		return;
131
132	simple_mtx_lock(&etna_drm_table_lock);
133	etna_device_del_impl(dev);
134	simple_mtx_unlock(&etna_drm_table_lock);
135}
136
137int etna_device_fd(struct etna_device *dev)
138{
139   return dev->fd;
140}
141
142bool etnaviv_device_softpin_capable(struct etna_device *dev)
143{
144	return !!dev->use_softpin;
145}
146
147uint32_t etnaviv_device_version(struct etna_device *dev)
148{
149   return dev->drm_version;
150}
151