projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 6898f0a5 BG |
1 | /* |
| 2 | * Copyright 2014 Advanced Micro Devices, Inc. | |
| 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, sublicense, | |
| 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 shall be included in | |
| 12 | * all copies or substantial portions of the Software. | |
| 13 | * | |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
| 17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
| 18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
| 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
| 20 | * OTHER DEALINGS IN THE SOFTWARE. | |
| 21 | * | |
| 22 | */ | |
| 23 | ||
| 24 | #include "kfd_kernel_queue.h" | |
| 25 | ||
| 26 | static bool initialize_vi(struct kernel_queue *kq, struct kfd_dev *dev, | |
| 27 | enum kfd_queue_type type, unsigned int queue_size); | |
| 28 | static void uninitialize_vi(struct kernel_queue *kq); | |
| 29 | ||
| 30 | void kernel_queue_init_vi(struct kernel_queue_ops *ops) | |
| 31 | { | |
| 32 | ops->initialize = initialize_vi; | |
| 33 | ops->uninitialize = uninitialize_vi; | |
| 34 | } | |
| 35 | ||
| 36 | static bool initialize_vi(struct kernel_queue *kq, struct kfd_dev *dev, | |
| 37 | enum kfd_queue_type type, unsigned int queue_size) | |
| 38 | { | |
| 39 | int retval; | |
| 40 | ||
| 41 | retval = kfd_gtt_sa_allocate(dev, PAGE_SIZE, &kq->eop_mem); | |
| 42 | if (retval != 0) | |
| 43 | return false; | |
| 44 | ||
| 45 | kq->eop_gpu_addr = kq->eop_mem->gpu_addr; | |
| 46 | kq->eop_kernel_addr = kq->eop_mem->cpu_ptr; | |
| 47 | ||
| 48 | memset(kq->eop_kernel_addr, 0, PAGE_SIZE); | |
| 49 | ||
| 50 | return true; | |
| 51 | } | |
| 52 | ||
| 53 | static void uninitialize_vi(struct kernel_queue *kq) | |
| 54 | { | |
| 55 | kfd_gtt_sa_free(kq->dev, kq->eop_mem); | |
| 56 | } |