projects / deliverable / linux.git / blame
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| 6e99df57 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 | #ifndef KFD_MQD_MANAGER_H_ | |
| 25 | #define KFD_MQD_MANAGER_H_ | |
| 26 | ||
| 27 | #include "kfd_priv.h" | |
| 28 | ||
| 29 | /** | |
| 30 | * struct mqd_manager | |
| 31 | * | |
| 32 | * @init_mqd: Allocates the mqd buffer on local gpu memory and initialize it. | |
| 33 | * | |
| 34 | * @load_mqd: Loads the mqd to a concrete hqd slot. Used only for no cp | |
| 35 | * scheduling mode. | |
| 36 | * | |
| 37 | * @update_mqd: Handles a update call for the MQD | |
| 38 | * | |
| 39 | * @destroy_mqd: Destroys the HQD slot and by that preempt the relevant queue. | |
| 40 | * Used only for no cp scheduling. | |
| 41 | * | |
| 42 | * @uninit_mqd: Releases the mqd buffer from local gpu memory. | |
| 43 | * | |
| 44 | * @is_occupied: Checks if the relevant HQD slot is occupied. | |
| 45 | * | |
| 46 | * @mqd_mutex: Mqd manager mutex. | |
| 47 | * | |
| 48 | * @dev: The kfd device structure coupled with this module. | |
| 49 | * | |
| 50 | * MQD stands for Memory Queue Descriptor which represents the current queue | |
| 51 | * state in the memory and initiate the HQD (Hardware Queue Descriptor) state. | |
| 52 | * This structure is actually a base class for the different types of MQDs | |
| 53 | * structures for the variant ASICs that should be supported in the future. | |
| 54 | * This base class is also contains all the MQD specific operations. | |
| 55 | * Another important thing to mention is that each queue has a MQD that keeps | |
| 56 | * his state (or context) after each preemption or reassignment. | |
| 57 | * Basically there are a instances of the mqd manager class per MQD type per | |
| 58 | * ASIC. Currently the kfd driver supports only Kaveri so there are instances | |
| 59 | * per KFD_MQD_TYPE for each device. | |
| 60 | * | |
| 61 | */ | |
| 62 | ||
| 63 | struct mqd_manager { | |
| 64 | int (*init_mqd)(struct mqd_manager *mm, void **mqd, | |
| 65 | struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr, | |
| 66 | struct queue_properties *q); | |
| 67 | ||
| 68 | int (*load_mqd)(struct mqd_manager *mm, void *mqd, | |
| 69 | uint32_t pipe_id, uint32_t queue_id, | |
| 70 | uint32_t __user *wptr); | |
| 71 | ||
| 72 | int (*update_mqd)(struct mqd_manager *mm, void *mqd, | |
| 73 | struct queue_properties *q); | |
| 74 | ||
| 75 | int (*destroy_mqd)(struct mqd_manager *mm, void *mqd, | |
| 76 | enum kfd_preempt_type type, | |
| 77 | unsigned int timeout, uint32_t pipe_id, | |
| 78 | uint32_t queue_id); | |
| 79 | ||
| 80 | void (*uninit_mqd)(struct mqd_manager *mm, void *mqd, | |
| 81 | struct kfd_mem_obj *mqd_mem_obj); | |
| 82 | ||
| 83 | bool (*is_occupied)(struct mqd_manager *mm, void *mqd, | |
| 84 | uint64_t queue_address, uint32_t pipe_id, | |
| 85 | uint32_t queue_id); | |
| 86 | ||
| 87 | struct mutex mqd_mutex; | |
| 88 | struct kfd_dev *dev; | |
| 89 | }; | |
| 90 | ||
| 91 | #endif /* KFD_MQD_MANAGER_H_ */ |