/* 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 .
*
*/
#ifndef KFD_MQD_MANAGER_H_
#define KFD_MQD_MANAGER_H_
#include "kfd_priv.h"
#define KFD_MAX_NUM_SE 8
#define KFD_MAX_NUM_SH_PER_SE 2
/**
* 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_node *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,
struct mqd_update_info *minfo);
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,
struct queue_properties *q,
void __user *ctl_stack,
u32 *ctl_stack_used_size,
u32 *save_area_used_size);
void (*get_checkpoint_info)(struct mqd_manager *mm, void *mqd, uint32_t *ctl_stack_size);
void (*checkpoint_mqd)(struct mqd_manager *mm,
void *mqd,
void *mqd_dst,
void *ctl_stack_dst);
void (*restore_mqd)(struct mqd_manager *mm, void **mqd,
struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
struct queue_properties *p,
const void *mqd_src,
const void *ctl_stack_src,
const u32 ctl_stack_size);
#if defined (CONFIG_DEBUG_FS)
int (*debugfs_show_mqd)(struct seq_file *m, void *data);
#endif
bool (*check_preemption_failed)(struct mqd_manager *mm, void *mqd);
uint64_t (*mqd_stride)(struct mqd_manager *mm,
struct queue_properties *p);
struct mutex mqd_mutex;
struct kfd_node *dev;
uint32_t mqd_size;
};
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;
};
struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_node *dev,
struct queue_properties *q);
struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_node *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, uint32_t inst);
int kfd_hiq_load_mqd_kiq(struct mqd_manager *mm, void *mqd,
uint32_t pipe_id, uint32_t queue_id,
struct queue_properties *p, struct mm_struct *mms);
int kfd_destroy_mqd_cp(struct mqd_manager *mm, void *mqd,
enum kfd_preempt_type type, unsigned int timeout,
uint32_t pipe_id, uint32_t queue_id);
void kfd_free_mqd_cp(struct mqd_manager *mm, void *mqd,
struct kfd_mem_obj *mqd_mem_obj);
bool kfd_is_occupied_cp(struct mqd_manager *mm, void *mqd,
uint64_t queue_address, uint32_t pipe_id,
uint32_t queue_id);
int kfd_load_mqd_sdma(struct mqd_manager *mm, void *mqd,
uint32_t pipe_id, uint32_t queue_id,
struct queue_properties *p, struct mm_struct *mms);
int kfd_destroy_mqd_sdma(struct mqd_manager *mm, void *mqd,
enum kfd_preempt_type type, unsigned int timeout,
uint32_t pipe_id, uint32_t queue_id);
bool kfd_is_occupied_sdma(struct mqd_manager *mm, void *mqd,
uint64_t queue_address, uint32_t pipe_id,
uint32_t queue_id);
void kfd_get_hiq_xcc_mqd(struct kfd_node *dev,
struct kfd_mem_obj *mqd_mem_obj, uint32_t virtual_xcc_id);
uint64_t kfd_hiq_mqd_stride(struct kfd_node *dev);
uint64_t kfd_mqd_stride(struct mqd_manager *mm,
struct queue_properties *q);
bool kfd_check_hiq_mqd_doorbell_id(struct kfd_node *node, uint32_t doorbell_id,
uint32_t inst);
#endif /* KFD_MQD_MANAGER_H_ */
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