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Rev | Author | Line No. | Line |
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2997 | Serge | 1 | /* |
2 | * Copyright 2011 Christian König. |
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3 | * All Rights Reserved. |
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4 | * |
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5 | * Permission is hereby granted, free of charge, to any person obtaining a |
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6 | * copy of this software and associated documentation files (the |
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7 | * "Software"), to deal in the Software without restriction, including |
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8 | * without limitation the rights to use, copy, modify, merge, publish, |
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9 | * distribute, sub license, and/or sell copies of the Software, and to |
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10 | * permit persons to whom the Software is furnished to do so, subject to |
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11 | * the following conditions: |
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12 | * |
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13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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14 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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15 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
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16 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
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17 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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18 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
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19 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
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20 | * |
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21 | * The above copyright notice and this permission notice (including the |
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22 | * next paragraph) shall be included in all copies or substantial portions |
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23 | * of the Software. |
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24 | * |
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25 | */ |
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26 | /* |
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27 | * Authors: |
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28 | * Christian König |
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29 | */ |
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30 | #include |
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31 | #include "radeon.h" |
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5078 | serge | 32 | #include "radeon_trace.h" |
2997 | Serge | 33 | |
34 | int radeon_semaphore_create(struct radeon_device *rdev, |
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35 | struct radeon_semaphore **semaphore) |
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36 | { |
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5271 | serge | 37 | int r; |
2997 | Serge | 38 | |
39 | *semaphore = kmalloc(sizeof(struct radeon_semaphore), GFP_KERNEL); |
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40 | if (*semaphore == NULL) { |
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41 | return -ENOMEM; |
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42 | } |
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5271 | serge | 43 | r = radeon_sa_bo_new(rdev, &rdev->ring_tmp_bo, |
44 | &(*semaphore)->sa_bo, 8, 8); |
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2997 | Serge | 45 | if (r) { |
46 | kfree(*semaphore); |
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47 | *semaphore = NULL; |
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48 | return r; |
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49 | } |
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50 | (*semaphore)->waiters = 0; |
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51 | (*semaphore)->gpu_addr = radeon_sa_bo_gpu_addr((*semaphore)->sa_bo); |
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5078 | serge | 52 | |
5271 | serge | 53 | *((uint64_t *)radeon_sa_bo_cpu_addr((*semaphore)->sa_bo)) = 0; |
5078 | serge | 54 | |
2997 | Serge | 55 | return 0; |
56 | } |
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57 | |||
5078 | serge | 58 | bool radeon_semaphore_emit_signal(struct radeon_device *rdev, int ridx, |
2997 | Serge | 59 | struct radeon_semaphore *semaphore) |
60 | { |
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5078 | serge | 61 | struct radeon_ring *ring = &rdev->ring[ridx]; |
62 | |||
63 | trace_radeon_semaphore_signale(ridx, semaphore); |
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64 | |||
65 | if (radeon_semaphore_ring_emit(rdev, ridx, ring, semaphore, false)) { |
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6104 | serge | 66 | --semaphore->waiters; |
5078 | serge | 67 | |
68 | /* for debugging lockup only, used by sysfs debug files */ |
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69 | ring->last_semaphore_signal_addr = semaphore->gpu_addr; |
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70 | return true; |
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71 | } |
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72 | return false; |
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2997 | Serge | 73 | } |
74 | |||
5078 | serge | 75 | bool radeon_semaphore_emit_wait(struct radeon_device *rdev, int ridx, |
2997 | Serge | 76 | struct radeon_semaphore *semaphore) |
77 | { |
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5078 | serge | 78 | struct radeon_ring *ring = &rdev->ring[ridx]; |
79 | |||
80 | trace_radeon_semaphore_wait(ridx, semaphore); |
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81 | |||
82 | if (radeon_semaphore_ring_emit(rdev, ridx, ring, semaphore, true)) { |
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6104 | serge | 83 | ++semaphore->waiters; |
5078 | serge | 84 | |
85 | /* for debugging lockup only, used by sysfs debug files */ |
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86 | ring->last_semaphore_wait_addr = semaphore->gpu_addr; |
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87 | return true; |
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88 | } |
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89 | return false; |
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2997 | Serge | 90 | } |
91 | |||
92 | void radeon_semaphore_free(struct radeon_device *rdev, |
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93 | struct radeon_semaphore **semaphore, |
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94 | struct radeon_fence *fence) |
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95 | { |
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96 | if (semaphore == NULL || *semaphore == NULL) { |
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97 | return; |
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98 | } |
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99 | if ((*semaphore)->waiters > 0) { |
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100 | dev_err(rdev->dev, "semaphore %p has more waiters than signalers," |
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101 | " hardware lockup imminent!\n", *semaphore); |
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102 | } |
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103 | radeon_sa_bo_free(rdev, &(*semaphore)->sa_bo, fence); |
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104 | kfree(*semaphore); |
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105 | *semaphore = NULL; |
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106 | } |