2 * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
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:
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
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
24 * Rob Clark <robclark@freedesktop.org>
29 #include "pipe/p_context.h"
30 #include "pipe/p_state.h"
31 #include "util/format/u_format.h"
32 #include "util/u_memory.h"
33 #include "util/u_inlines.h"
34 #include "util/u_hash_table.h"
35 #include "os/os_thread.h"
37 #include "freedreno_drm_public.h"
39 #include "freedreno/freedreno_screen.h"
41 static struct util_hash_table
*fd_tab
= NULL
;
43 static mtx_t fd_screen_mutex
= _MTX_INITIALIZER_NP
;
46 fd_drm_screen_destroy(struct pipe_screen
*pscreen
)
48 struct fd_screen
*screen
= fd_screen(pscreen
);
51 mtx_lock(&fd_screen_mutex
);
52 destroy
= --screen
->refcnt
== 0;
54 int fd
= fd_device_fd(screen
->dev
);
55 util_hash_table_remove(fd_tab
, intptr_to_pointer(fd
));
57 mtx_unlock(&fd_screen_mutex
);
60 pscreen
->destroy
= screen
->winsys_priv
;
61 pscreen
->destroy(pscreen
);
65 static unsigned hash_fd(void *key
)
67 int fd
= pointer_to_intptr(key
);
71 return stat
.st_dev
^ stat
.st_ino
^ stat
.st_rdev
;
74 static int compare_fd(void *key1
, void *key2
)
76 int fd1
= pointer_to_intptr(key1
);
77 int fd2
= pointer_to_intptr(key2
);
78 struct stat stat1
, stat2
;
82 return stat1
.st_dev
!= stat2
.st_dev
||
83 stat1
.st_ino
!= stat2
.st_ino
||
84 stat1
.st_rdev
!= stat2
.st_rdev
;
88 fd_drm_screen_create(int fd
, struct renderonly
*ro
)
90 struct pipe_screen
*pscreen
= NULL
;
92 mtx_lock(&fd_screen_mutex
);
94 fd_tab
= util_hash_table_create(hash_fd
, compare_fd
);
99 pscreen
= util_hash_table_get(fd_tab
, intptr_to_pointer(fd
));
101 fd_screen(pscreen
)->refcnt
++;
103 struct fd_device
*dev
= fd_device_new_dup(fd
);
107 pscreen
= fd_screen_create(dev
, ro
);
109 int fd
= fd_device_fd(dev
);
111 util_hash_table_set(fd_tab
, intptr_to_pointer(fd
), pscreen
);
113 /* Bit of a hack, to avoid circular linkage dependency,
114 * ie. pipe driver having to call in to winsys, we
115 * override the pipe drivers screen->destroy():
117 fd_screen(pscreen
)->winsys_priv
= pscreen
->destroy
;
118 pscreen
->destroy
= fd_drm_screen_destroy
;
123 mtx_unlock(&fd_screen_mutex
);