Release 4.11 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h
/*
* Copyright 2014 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef KFD_MQD_MANAGER_H_
#define KFD_MQD_MANAGER_H_
#include "kfd_priv.h"
/**
* struct mqd_manager
*
* @init_mqd: Allocates the mqd buffer on local gpu memory and initialize it.
*
* @load_mqd: Loads the mqd to a concrete hqd slot. Used only for no cp
* scheduling mode.
*
* @update_mqd: Handles a update call for the MQD
*
* @destroy_mqd: Destroys the HQD slot and by that preempt the relevant queue.
* Used only for no cp scheduling.
*
* @uninit_mqd: Releases the mqd buffer from local gpu memory.
*
* @is_occupied: Checks if the relevant HQD slot is occupied.
*
* @mqd_mutex: Mqd manager mutex.
*
* @dev: The kfd device structure coupled with this module.
*
* MQD stands for Memory Queue Descriptor which represents the current queue
* state in the memory and initiate the HQD (Hardware Queue Descriptor) state.
* This structure is actually a base class for the different types of MQDs
* structures for the variant ASICs that should be supported in the future.
* This base class is also contains all the MQD specific operations.
* Another important thing to mention is that each queue has a MQD that keeps
* his state (or context) after each preemption or reassignment.
* Basically there are a instances of the mqd manager class per MQD type per
* ASIC. Currently the kfd driver supports only Kaveri so there are instances
* per KFD_MQD_TYPE for each device.
*
*/
struct mqd_manager {
int (*init_mqd)(struct mqd_manager *mm, void **mqd,
struct kfd_mem_obj **mqd_mem_obj, uint64_t *gart_addr,
struct queue_properties *q);
int (*load_mqd)(struct mqd_manager *mm, void *mqd,
uint32_t pipe_id, uint32_t queue_id,
uint32_t __user *wptr);
int (*update_mqd)(struct mqd_manager *mm, void *mqd,
struct queue_properties *q);
int (*destroy_mqd)(struct mqd_manager *mm, void *mqd,
enum kfd_preempt_type type,
unsigned int timeout, uint32_t pipe_id,
uint32_t queue_id);
void (*uninit_mqd)(struct mqd_manager *mm, void *mqd,
struct kfd_mem_obj *mqd_mem_obj);
bool (*is_occupied)(struct mqd_manager *mm, void *mqd,
uint64_t queue_address, uint32_t pipe_id,
uint32_t queue_id);
struct mutex mqd_mutex;
struct kfd_dev *dev;
};
#endif /* KFD_MQD_MANAGER_H_ */
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