1/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
2
3/*
4 * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Authors:
26 *    Rob Clark <robclark@freedesktop.org>
27 */
28
29#include <sys/types.h>
30#include <sys/stat.h>
31#include <unistd.h>
32
33#include "freedreno_drmif.h"
34#include "freedreno_priv.h"
35
36static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
37
38struct fd_device * kgsl_device_new(int fd);
39struct fd_device * msm_device_new(int fd);
40
41drm_public struct fd_device * fd_device_new(int fd)
42{
43	struct fd_device *dev;
44	drmVersionPtr version;
45
46	/* figure out if we are kgsl or msm drm driver: */
47	version = drmGetVersion(fd);
48	if (!version) {
49		ERROR_MSG("cannot get version: %s", strerror(errno));
50		return NULL;
51	}
52
53	if (!strcmp(version->name, "msm")) {
54		DEBUG_MSG("msm DRM device");
55		if (version->version_major != 1) {
56			ERROR_MSG("unsupported version: %u.%u.%u", version->version_major,
57				version->version_minor, version->version_patchlevel);
58			dev = NULL;
59			goto out;
60		}
61
62		dev = msm_device_new(fd);
63		dev->version = version->version_minor;
64#if HAVE_FREEDRENO_KGSL
65	} else if (!strcmp(version->name, "kgsl")) {
66		DEBUG_MSG("kgsl DRM device");
67		dev = kgsl_device_new(fd);
68#endif
69	} else {
70		ERROR_MSG("unknown device: %s", version->name);
71		dev = NULL;
72	}
73
74out:
75	drmFreeVersion(version);
76
77	if (!dev)
78		return NULL;
79
80	atomic_set(&dev->refcnt, 1);
81	dev->fd = fd;
82	dev->handle_table = drmHashCreate();
83	dev->name_table = drmHashCreate();
84	fd_bo_cache_init(&dev->bo_cache, FALSE);
85	fd_bo_cache_init(&dev->ring_cache, TRUE);
86
87	return dev;
88}
89
90/* like fd_device_new() but creates it's own private dup() of the fd
91 * which is close()d when the device is finalized.
92 */
93drm_public struct fd_device * fd_device_new_dup(int fd)
94{
95	int dup_fd = dup(fd);
96	struct fd_device *dev = fd_device_new(dup_fd);
97	if (dev)
98		dev->closefd = 1;
99	else
100		close(dup_fd);
101	return dev;
102}
103
104drm_public struct fd_device * fd_device_ref(struct fd_device *dev)
105{
106	atomic_inc(&dev->refcnt);
107	return dev;
108}
109
110static void fd_device_del_impl(struct fd_device *dev)
111{
112	int close_fd = dev->closefd ? dev->fd : -1;
113	fd_bo_cache_cleanup(&dev->bo_cache, 0);
114	drmHashDestroy(dev->handle_table);
115	drmHashDestroy(dev->name_table);
116	dev->funcs->destroy(dev);
117	if (close_fd >= 0)
118		close(close_fd);
119}
120
121drm_private void fd_device_del_locked(struct fd_device *dev)
122{
123	if (!atomic_dec_and_test(&dev->refcnt))
124		return;
125	fd_device_del_impl(dev);
126}
127
128drm_public void fd_device_del(struct fd_device *dev)
129{
130	if (!atomic_dec_and_test(&dev->refcnt))
131		return;
132	pthread_mutex_lock(&table_lock);
133	fd_device_del_impl(dev);
134	pthread_mutex_unlock(&table_lock);
135}
136
137drm_public int fd_device_fd(struct fd_device *dev)
138{
139	return dev->fd;
140}
141
142drm_public enum fd_version fd_device_version(struct fd_device *dev)
143{
144	return dev->version;
145}
146