92 lines
3.3 KiB
C
92 lines
3.3 KiB
C
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/*
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* Copyright 2014 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#ifndef KFD_MQD_MANAGER_H_
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#define KFD_MQD_MANAGER_H_
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#include "kfd_priv.h"
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/**
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* struct mqd_manager
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*
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* @init_mqd: Allocates the mqd buffer on local gpu memory and initialize it.
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*
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* @load_mqd: Loads the mqd to a concrete hqd slot. Used only for no cp
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* scheduling mode.
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*
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* @update_mqd: Handles a update call for the MQD
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*
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* @destroy_mqd: Destroys the HQD slot and by that preempt the relevant queue.
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* Used only for no cp scheduling.
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*
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* @uninit_mqd: Releases the mqd buffer from local gpu memory.
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*
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* @is_occupied: Checks if the relevant HQD slot is occupied.
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*
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* @mqd_mutex: Mqd manager mutex.
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*
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* @dev: The kfd device structure coupled with this module.
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*
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* MQD stands for Memory Queue Descriptor which represents the current queue
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* state in the memory and initiate the HQD (Hardware Queue Descriptor) state.
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* This structure is actually a base class for the different types of MQDs
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* structures for the variant ASICs that should be supported in the future.
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* This base class is also contains all the MQD specific operations.
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* Another important thing to mention is that each queue has a MQD that keeps
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* his state (or context) after each preemption or reassignment.
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* Basically there are a instances of the mqd manager class per MQD type per
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* ASIC. Currently the kfd driver supports only Kaveri so there are instances
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* per KFD_MQD_TYPE for each device.
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*
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*/
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struct mqd_manager {
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int (*init_mqd)(struct mqd_manager *mm, void **mqd,
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struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
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struct queue_properties *q);
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int (*load_mqd)(struct mqd_manager *mm, void *mqd,
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uint32_t pipe_id, uint32_t queue_id,
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uint32_t __user *wptr);
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int (*update_mqd)(struct mqd_manager *mm, void *mqd,
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struct queue_properties *q);
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int (*destroy_mqd)(struct mqd_manager *mm, void *mqd,
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enum kfd_preempt_type type,
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unsigned int timeout, uint32_t pipe_id,
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uint32_t queue_id);
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void (*uninit_mqd)(struct mqd_manager *mm, void *mqd,
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struct kfd_mem_obj *mqd_mem_obj);
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bool (*is_occupied)(struct mqd_manager *mm, void *mqd,
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uint64_t queue_address, uint32_t pipe_id,
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uint32_t queue_id);
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struct mutex mqd_mutex;
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struct kfd_dev *dev;
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};
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#endif /* KFD_MQD_MANAGER_H_ */
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