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/*
* 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"
#define KFD_MAX_NUM_SE 8
/**
* 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.
*
*/
extern int pipe_priority_map[];
struct mqd_manager {
struct kfd_mem_obj* (*allocate_mqd)(struct kfd_dev *kfd,
struct queue_properties *q);
void (*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,
struct queue_properties *p,
struct mm_struct *mms);
void (*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 (*free_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);
int (*get_wave_state)(struct mqd_manager *mm, void *mqd,
void __user *ctl_stack,
u32 *ctl_stack_used_size,
u32 *save_area_used_size);
#if defined(CONFIG_DEBUG_FS)
int (*debugfs_show_mqd)(struct seq_file *m, void *data);
#endif
struct mutex mqd_mutex;
struct kfd_dev *dev;
uint32_t mqd_size;
};
struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev,
struct queue_properties *q);
struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
struct queue_properties *q);
void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
struct kfd_mem_obj *mqd_mem_obj);
void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm,
const uint32_t *cu_mask, uint32_t cu_mask_count,
uint32_t *se_mask);
#endif /* KFD_MQD_MANAGER_H_ */
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