Christian König | 15d3332 | 2011-09-15 19:02:22 +0200 | [diff] [blame] | 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 | */ |
| 30 | #include "drmP.h" |
| 31 | #include "drm.h" |
| 32 | #include "radeon.h" |
| 33 | |
| 34 | static int allocate_semaphores(struct radeon_device *rdev) |
| 35 | { |
| 36 | const unsigned long bo_size = PAGE_SIZE * 4; |
| 37 | |
| 38 | struct radeon_bo *bo; |
| 39 | struct list_head new_entrys; |
| 40 | unsigned long irq_flags; |
| 41 | uint64_t gpu_addr; |
| 42 | void *map; |
| 43 | int i, r; |
| 44 | |
| 45 | r = radeon_bo_create(rdev, bo_size, RADEON_GPU_PAGE_SIZE, true, |
| 46 | RADEON_GEM_DOMAIN_GTT, &bo); |
| 47 | if (r) { |
| 48 | dev_err(rdev->dev, "(%d) failed to allocate semaphore bo\n", r); |
| 49 | return r; |
| 50 | } |
| 51 | |
| 52 | r = radeon_bo_reserve(bo, false); |
| 53 | if (r) { |
| 54 | radeon_bo_unref(&bo); |
| 55 | dev_err(rdev->dev, "(%d) failed to reserve semaphore bo\n", r); |
| 56 | return r; |
| 57 | } |
| 58 | |
| 59 | r = radeon_bo_kmap(bo, &map); |
| 60 | if (r) { |
| 61 | radeon_bo_unreserve(bo); |
| 62 | radeon_bo_unref(&bo); |
| 63 | dev_err(rdev->dev, "(%d) semaphore map failed\n", r); |
| 64 | return r; |
| 65 | } |
| 66 | memset(map, 0, bo_size); |
| 67 | radeon_bo_kunmap(bo); |
| 68 | |
| 69 | r = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_VRAM, &gpu_addr); |
| 70 | if (r) { |
| 71 | radeon_bo_unreserve(bo); |
| 72 | radeon_bo_unref(&bo); |
| 73 | dev_err(rdev->dev, "(%d) semaphore pin failed\n", r); |
| 74 | return r; |
| 75 | } |
| 76 | |
| 77 | INIT_LIST_HEAD(&new_entrys); |
| 78 | for (i = 0; i < bo_size/8; ++i) { |
| 79 | struct radeon_semaphore *sem = kmalloc(sizeof(struct radeon_semaphore), GFP_KERNEL); |
| 80 | ttm_bo_reference(&bo->tbo); |
| 81 | sem->robj = bo; |
| 82 | sem->gpu_addr = gpu_addr; |
| 83 | gpu_addr += 8; |
| 84 | list_add_tail(&sem->list, &new_entrys); |
| 85 | } |
| 86 | |
| 87 | radeon_bo_unreserve(bo); |
| 88 | radeon_bo_unref(&bo); |
| 89 | |
| 90 | write_lock_irqsave(&rdev->semaphore_drv.lock, irq_flags); |
| 91 | list_splice_tail(&new_entrys, &rdev->semaphore_drv.free); |
| 92 | write_unlock_irqrestore(&rdev->semaphore_drv.lock, irq_flags); |
| 93 | |
| 94 | DRM_INFO("%d new semaphores allocated\n", (int)(bo_size/8)); |
| 95 | |
| 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | int radeon_semaphore_create(struct radeon_device *rdev, |
| 100 | struct radeon_semaphore **semaphore) |
| 101 | { |
| 102 | unsigned long irq_flags; |
| 103 | |
| 104 | write_lock_irqsave(&rdev->semaphore_drv.lock, irq_flags); |
| 105 | if (list_empty(&rdev->semaphore_drv.free)) { |
| 106 | int r; |
| 107 | write_unlock_irqrestore(&rdev->semaphore_drv.lock, irq_flags); |
| 108 | r = allocate_semaphores(rdev); |
| 109 | if (r) |
| 110 | return r; |
| 111 | write_lock_irqsave(&rdev->semaphore_drv.lock, irq_flags); |
| 112 | } |
| 113 | |
| 114 | *semaphore = list_first_entry(&rdev->semaphore_drv.free, struct radeon_semaphore, list); |
| 115 | list_del(&(*semaphore)->list); |
| 116 | |
| 117 | write_unlock_irqrestore(&rdev->semaphore_drv.lock, irq_flags); |
| 118 | return 0; |
| 119 | } |
| 120 | |
| 121 | void radeon_semaphore_emit_signal(struct radeon_device *rdev, int ring, |
| 122 | struct radeon_semaphore *semaphore) |
| 123 | { |
Christian König | e32eb50 | 2011-10-23 12:56:27 +0200 | [diff] [blame^] | 124 | radeon_semaphore_ring_emit(rdev, ring, &rdev->ring[ring], semaphore, false); |
Christian König | 15d3332 | 2011-09-15 19:02:22 +0200 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | void radeon_semaphore_emit_wait(struct radeon_device *rdev, int ring, |
| 128 | struct radeon_semaphore *semaphore) |
| 129 | { |
Christian König | e32eb50 | 2011-10-23 12:56:27 +0200 | [diff] [blame^] | 130 | radeon_semaphore_ring_emit(rdev, ring, &rdev->ring[ring], semaphore, true); |
Christian König | 15d3332 | 2011-09-15 19:02:22 +0200 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | void radeon_semaphore_free(struct radeon_device *rdev, |
| 134 | struct radeon_semaphore *semaphore) |
| 135 | { |
| 136 | unsigned long irq_flags; |
| 137 | |
| 138 | write_lock_irqsave(&rdev->semaphore_drv.lock, irq_flags); |
| 139 | list_add_tail(&semaphore->list, &rdev->semaphore_drv.free); |
| 140 | write_unlock_irqrestore(&rdev->semaphore_drv.lock, irq_flags); |
| 141 | } |
| 142 | |
| 143 | void radeon_semaphore_driver_fini(struct radeon_device *rdev) |
| 144 | { |
| 145 | struct radeon_semaphore *i, *n; |
| 146 | struct list_head entrys; |
| 147 | unsigned long irq_flags; |
| 148 | |
| 149 | INIT_LIST_HEAD(&entrys); |
| 150 | write_lock_irqsave(&rdev->semaphore_drv.lock, irq_flags); |
| 151 | if (!list_empty(&rdev->semaphore_drv.free)) { |
| 152 | list_splice(&rdev->semaphore_drv.free, &entrys); |
| 153 | } |
| 154 | INIT_LIST_HEAD(&rdev->semaphore_drv.free); |
| 155 | write_unlock_irqrestore(&rdev->semaphore_drv.lock, irq_flags); |
| 156 | |
| 157 | list_for_each_entry_safe(i, n, &entrys, list) { |
| 158 | radeon_bo_unref(&i->robj); |
| 159 | kfree(i); |
| 160 | } |
| 161 | } |