1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 #include <driclient.h>
30 #include "nouveau_context.h"
31 #include "nouveau_screen.h"
33 static pthread_mutex_t lockMutex
= PTHREAD_MUTEX_INITIALIZER
;
36 nouveau_contended_lock(struct nouveau_context
*nv
, unsigned int flags
)
38 dri_drawable_t
*dri_drawable
= nv
->dri_drawable
;
39 dri_screen_t
*dri_screen
= nv
->dri_context
->dri_screen
;
40 struct nouveau_screen
*nv_screen
= nv
->nv_screen
;
41 struct nouveau_device
*dev
= nv_screen
->device
;
42 struct nouveau_device_priv
*nvdev
= nouveau_device(dev
);
44 drmGetLock(nvdev
->fd
, nvdev
->ctx
, flags
);
46 /* If the window moved, may need to set a new cliprect now.
48 * NOTE: This releases and regains the hw lock, so all state
49 * checking must be done *after* this call:
52 DRI_VALIDATE_DRAWABLE_INFO(dri_screen
, dri_drawable
);
55 /* Lock the hardware and validate our state.
58 LOCK_HARDWARE(struct nouveau_context
*nv
)
60 struct nouveau_screen
*nv_screen
= nv
->nv_screen
;
61 struct nouveau_device
*dev
= nv_screen
->device
;
62 struct nouveau_device_priv
*nvdev
= nouveau_device(dev
);
65 pthread_mutex_lock(&lockMutex
);
68 DRM_CAS(nvdev
->lock
, nvdev
->ctx
,
69 (DRM_LOCK_HELD
| nvdev
->ctx
), __ret
);
72 nouveau_contended_lock(nv
, 0);
77 /* Unlock the hardware using the global current context
80 UNLOCK_HARDWARE(struct nouveau_context
*nv
)
82 struct nouveau_screen
*nv_screen
= nv
->nv_screen
;
83 struct nouveau_device
*dev
= nv_screen
->device
;
84 struct nouveau_device_priv
*nvdev
= nouveau_device(dev
);
89 DRM_UNLOCK(nvdev
->fd
, nvdev
->lock
, nvdev
->ctx
);
91 pthread_mutex_unlock(&lockMutex
);