5df099e8bc
Wavefront context save data is of interest to userspace clients for debugging static wavefront state. The MQD contains two parameters required to parse the control stack and the control stack itself is kept in the MQD from gfx9 onwards. Add an ioctl to fetch the context save area and control stack offsets and to copy the control stack to a userspace address if it is kept in the MQD. Signed-off-by: Jay Cornwall <Jay.Cornwall@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
109 lines
3.8 KiB
C
109 lines
3.8 KiB
C
/*
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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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* @get_wave_state: Retrieves context save state and optionally copies the
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* control stack, if kept in the MQD, to the given userspace address.
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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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struct queue_properties *p,
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struct mm_struct *mms);
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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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int (*get_wave_state)(struct mqd_manager *mm, void *mqd,
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void __user *ctl_stack,
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u32 *ctl_stack_used_size,
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u32 *save_area_used_size);
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#if defined(CONFIG_DEBUG_FS)
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int (*debugfs_show_mqd)(struct seq_file *m, void *data);
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#endif
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struct mutex mqd_mutex;
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struct kfd_dev *dev;
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};
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void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm,
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const uint32_t *cu_mask, uint32_t cu_mask_count,
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uint32_t *se_mask);
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#endif /* KFD_MQD_MANAGER_H_ */
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