Commit | Line | Data |
---|---|---|
22f579c6 DA |
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 | ||
b5e89ed5 | 32 | void via_init_futex(drm_via_private_t * dev_priv) |
22f579c6 DA |
33 | { |
34 | unsigned int i; | |
35 | ||
3e684eae | 36 | DRM_DEBUG("\n"); |
22f579c6 DA |
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 | ||
b5e89ed5 | 44 | void via_cleanup_futex(drm_via_private_t * dev_priv) |
22f579c6 | 45 | { |
b5e89ed5 | 46 | } |
22f579c6 | 47 | |
b5e89ed5 | 48 | void via_release_futex(drm_via_private_t * dev_priv, int context) |
22f579c6 DA |
49 | { |
50 | unsigned int i; | |
51 | volatile int *lock; | |
52 | ||
92514243 DA |
53 | if (!dev_priv->sarea_priv) |
54 | return; | |
55 | ||
b5e89ed5 | 56 | for (i = 0; i < VIA_NR_XVMC_LOCKS; ++i) { |
92514243 | 57 | lock = (volatile int *)XVMCLOCKPTR(dev_priv->sarea_priv, i); |
b5e89ed5 DA |
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])); | |
22f579c6 DA |
62 | } |
63 | *lock = 0; | |
64 | } | |
b5e89ed5 DA |
65 | } |
66 | } | |
22f579c6 | 67 | |
c153f45f | 68 | int via_decoder_futex(struct drm_device *dev, void *data, struct drm_file *file_priv) |
22f579c6 | 69 | { |
c153f45f | 70 | drm_via_futex_t *fx = data; |
22f579c6 DA |
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 | ||
3e684eae | 76 | DRM_DEBUG("\n"); |
22f579c6 | 77 | |
c153f45f | 78 | if (fx->lock > VIA_NR_XVMC_LOCKS) |
22f579c6 DA |
79 | return -EFAULT; |
80 | ||
c153f45f | 81 | lock = (volatile int *)XVMCLOCKPTR(sAPriv, fx->lock); |
22f579c6 | 82 | |
c153f45f | 83 | switch (fx->func) { |
22f579c6 | 84 | case VIA_FUTEX_WAIT: |
c153f45f EA |
85 | DRM_WAIT_ON(ret, dev_priv->decoder_queue[fx->lock], |
86 | (fx->ms / 10) * (DRM_HZ / 100), *lock != fx->val); | |
22f579c6 DA |
87 | return ret; |
88 | case VIA_FUTEX_WAKE: | |
c153f45f | 89 | DRM_WAKEUP(&(dev_priv->decoder_queue[fx->lock])); |
22f579c6 DA |
90 | return 0; |
91 | } | |
92 | return 0; | |
93 | } |