Commit | Line | Data |
---|---|---|
15d3332f CK |
1 | /* |
2 | * Copyright 2011 Christian König. | |
3 | * All Rights Reserved. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the | |
7 | * "Software"), to deal in the Software without restriction, including | |
8 | * without limitation the rights to use, copy, modify, merge, publish, | |
9 | * distribute, sub license, and/or sell copies of the Software, and to | |
10 | * permit persons to whom the Software is furnished to do so, subject to | |
11 | * the following conditions: | |
12 | * | |
13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
14 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
15 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
16 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
17 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
18 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
19 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
20 | * | |
21 | * The above copyright notice and this permission notice (including the | |
22 | * next paragraph) shall be included in all copies or substantial portions | |
23 | * of the Software. | |
24 | * | |
25 | */ | |
26 | /* | |
27 | * Authors: | |
28 | * Christian König <deathsimple@vodafone.de> | |
29 | */ | |
760285e7 | 30 | #include <drm/drmP.h> |
15d3332f | 31 | #include "radeon.h" |
bd80c8ba | 32 | #include "radeon_trace.h" |
15d3332f CK |
33 | |
34 | int radeon_semaphore_create(struct radeon_device *rdev, | |
35 | struct radeon_semaphore **semaphore) | |
36 | { | |
975700d2 | 37 | int r; |
15d3332f | 38 | |
a8c05940 | 39 | *semaphore = kmalloc(sizeof(struct radeon_semaphore), GFP_KERNEL); |
c1341e52 | 40 | if (*semaphore == NULL) { |
c1341e52 JG |
41 | return -ENOMEM; |
42 | } | |
975700d2 CK |
43 | r = radeon_sa_bo_new(rdev, &rdev->ring_tmp_bo, |
44 | &(*semaphore)->sa_bo, 8, 8); | |
a8c05940 JG |
45 | if (r) { |
46 | kfree(*semaphore); | |
47 | *semaphore = NULL; | |
48 | return r; | |
49 | } | |
50 | (*semaphore)->waiters = 0; | |
51 | (*semaphore)->gpu_addr = radeon_sa_bo_gpu_addr((*semaphore)->sa_bo); | |
8f53492f | 52 | |
975700d2 | 53 | *((uint64_t *)radeon_sa_bo_cpu_addr((*semaphore)->sa_bo)) = 0; |
1654b817 | 54 | |
15d3332f CK |
55 | return 0; |
56 | } | |
57 | ||
1654b817 | 58 | bool radeon_semaphore_emit_signal(struct radeon_device *rdev, int ridx, |
3cf8bb1a | 59 | struct radeon_semaphore *semaphore) |
15d3332f | 60 | { |
1654b817 CK |
61 | struct radeon_ring *ring = &rdev->ring[ridx]; |
62 | ||
63 | trace_radeon_semaphore_signale(ridx, semaphore); | |
64 | ||
65 | if (radeon_semaphore_ring_emit(rdev, ridx, ring, semaphore, false)) { | |
66 | --semaphore->waiters; | |
bd80c8ba | 67 | |
1654b817 CK |
68 | /* for debugging lockup only, used by sysfs debug files */ |
69 | ring->last_semaphore_signal_addr = semaphore->gpu_addr; | |
70 | return true; | |
71 | } | |
72 | return false; | |
15d3332f CK |
73 | } |
74 | ||
1654b817 | 75 | bool radeon_semaphore_emit_wait(struct radeon_device *rdev, int ridx, |
3cf8bb1a | 76 | struct radeon_semaphore *semaphore) |
15d3332f | 77 | { |
1654b817 CK |
78 | struct radeon_ring *ring = &rdev->ring[ridx]; |
79 | ||
80 | trace_radeon_semaphore_wait(ridx, semaphore); | |
81 | ||
82 | if (radeon_semaphore_ring_emit(rdev, ridx, ring, semaphore, true)) { | |
83 | ++semaphore->waiters; | |
bd80c8ba | 84 | |
1654b817 CK |
85 | /* for debugging lockup only, used by sysfs debug files */ |
86 | ring->last_semaphore_wait_addr = semaphore->gpu_addr; | |
87 | return true; | |
88 | } | |
89 | return false; | |
15d3332f CK |
90 | } |
91 | ||
92 | void radeon_semaphore_free(struct radeon_device *rdev, | |
220907d9 | 93 | struct radeon_semaphore **semaphore, |
a8c05940 | 94 | struct radeon_fence *fence) |
15d3332f | 95 | { |
220907d9 | 96 | if (semaphore == NULL || *semaphore == NULL) { |
a8c05940 JG |
97 | return; |
98 | } | |
220907d9 | 99 | if ((*semaphore)->waiters > 0) { |
a8c05940 | 100 | dev_err(rdev->dev, "semaphore %p has more waiters than signalers," |
220907d9 | 101 | " hardware lockup imminent!\n", *semaphore); |
15d3332f | 102 | } |
220907d9 CK |
103 | radeon_sa_bo_free(rdev, &(*semaphore)->sa_bo, fence); |
104 | kfree(*semaphore); | |
105 | *semaphore = NULL; | |
15d3332f | 106 | } |