diff options
Diffstat (limited to 'drivers/gpu/drm/via/via_video.c')
-rw-r--r-- | drivers/gpu/drm/via/via_video.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/drivers/gpu/drm/via/via_video.c b/drivers/gpu/drm/via/via_video.c new file mode 100644 index 000000000000..6ec04ac12459 --- /dev/null +++ b/drivers/gpu/drm/via/via_video.c | |||
@@ -0,0 +1,93 @@ | |||
1 | /* | ||
2 | * Copyright 2005 Thomas Hellstrom. All Rights Reserved. | ||
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, sub license, | ||
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 | ||
12 | * next paragraph) shall be included in all copies or substantial portions | ||
13 | * of the 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 NON-INFRINGEMENT. IN NO EVENT SHALL | ||
18 | * THE AUTHOR(S), AND/OR THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | ||
19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | ||
20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | ||
21 | * DEALINGS IN THE SOFTWARE. | ||
22 | * | ||
23 | * Author: Thomas Hellstrom 2005. | ||
24 | * | ||
25 | * Video and XvMC related functions. | ||
26 | */ | ||
27 | |||
28 | #include "drmP.h" | ||
29 | #include "via_drm.h" | ||
30 | #include "via_drv.h" | ||
31 | |||
32 | void via_init_futex(drm_via_private_t * dev_priv) | ||
33 | { | ||
34 | unsigned int i; | ||
35 | |||
36 | DRM_DEBUG("\n"); | ||
37 | |||
38 | for (i = 0; i < VIA_NR_XVMC_LOCKS; ++i) { | ||
39 | DRM_INIT_WAITQUEUE(&(dev_priv->decoder_queue[i])); | ||
40 | XVMCLOCKPTR(dev_priv->sarea_priv, i)->lock = 0; | ||
41 | } | ||
42 | } | ||
43 | |||
44 | void via_cleanup_futex(drm_via_private_t * dev_priv) | ||
45 | { | ||
46 | } | ||
47 | |||
48 | void via_release_futex(drm_via_private_t * dev_priv, int context) | ||
49 | { | ||
50 | unsigned int i; | ||
51 | volatile int *lock; | ||
52 | |||
53 | if (!dev_priv->sarea_priv) | ||
54 | return; | ||
55 | |||
56 | for (i = 0; i < VIA_NR_XVMC_LOCKS; ++i) { | ||
57 | lock = (volatile int *)XVMCLOCKPTR(dev_priv->sarea_priv, i); | ||
58 | if ((_DRM_LOCKING_CONTEXT(*lock) == context)) { | ||
59 | if (_DRM_LOCK_IS_HELD(*lock) | ||
60 | && (*lock & _DRM_LOCK_CONT)) { | ||
61 | DRM_WAKEUP(&(dev_priv->decoder_queue[i])); | ||
62 | } | ||
63 | *lock = 0; | ||
64 | } | ||
65 | } | ||
66 | } | ||
67 | |||
68 | int via_decoder_futex(struct drm_device *dev, void *data, struct drm_file *file_priv) | ||
69 | { | ||
70 | drm_via_futex_t *fx = data; | ||
71 | volatile int *lock; | ||
72 | drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private; | ||
73 | drm_via_sarea_t *sAPriv = dev_priv->sarea_priv; | ||
74 | int ret = 0; | ||
75 | |||
76 | DRM_DEBUG("\n"); | ||
77 | |||
78 | if (fx->lock > VIA_NR_XVMC_LOCKS) | ||
79 | return -EFAULT; | ||
80 | |||
81 | lock = (volatile int *)XVMCLOCKPTR(sAPriv, fx->lock); | ||
82 | |||
83 | switch (fx->func) { | ||
84 | case VIA_FUTEX_WAIT: | ||
85 | DRM_WAIT_ON(ret, dev_priv->decoder_queue[fx->lock], | ||
86 | (fx->ms / 10) * (DRM_HZ / 100), *lock != fx->val); | ||
87 | return ret; | ||
88 | case VIA_FUTEX_WAKE: | ||
89 | DRM_WAKEUP(&(dev_priv->decoder_queue[fx->lock])); | ||
90 | return 0; | ||
91 | } | ||
92 | return 0; | ||
93 | } | ||