/* SPDX-License-Identifier: GPL-2.0 OR MIT */ /* * Copyright 2014-2022 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. *
*/
/** * 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. * * @free_mqd: Releases the mqd buffer from local gpu memory. * * @is_occupied: Checks if the relevant HQD slot is occupied. * * @get_wave_state: Retrieves context save state and optionally copies the * control stack, if kept in the MQD, to the given userspace address. * * @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. *
*/ externint pipe_priority_map[]; struct mqd_manager { struct kfd_mem_obj* (*allocate_mqd)(struct kfd_node *kfd, struct queue_properties *q);
struct mqd_user_context_save_area_header { /* Byte offset from start of user context * save area to the last saved top (lowest * address) of control stack data. Must be * 4 byte aligned.
*/
uint32_t control_stack_offset;
/* Byte size of the last saved control stack * data. Must be 4 byte aligned.
*/
uint32_t control_stack_size;
/* Byte offset from start of user context save * area to the last saved base (lowest address) * of wave state data. Must be 4 byte aligned.
*/
uint32_t wave_state_offset;
/* Byte size of the last saved wave state data. * Must be 4 byte aligned.
*/
uint32_t wave_state_size;
};
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