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24 #ifndef KFD_MQD_MANAGER_H_
25 #define KFD_MQD_MANAGER_H_
29 #define KFD_MAX_NUM_SE 8
30 #define KFD_MAX_NUM_SH_PER_SE 2
35 * @init_mqd: Allocates the mqd buffer on local gpu memory and initialize it.
37 * @load_mqd: Loads the mqd to a concrete hqd slot. Used only for no cp
40 * @update_mqd: Handles a update call for the MQD
42 * @destroy_mqd: Destroys the HQD slot and by that preempt the relevant queue.
43 * Used only for no cp scheduling.
45 * @free_mqd: Releases the mqd buffer from local gpu memory.
47 * @is_occupied: Checks if the relevant HQD slot is occupied.
49 * @get_wave_state: Retrieves context save state and optionally copies the
50 * control stack, if kept in the MQD, to the given userspace address.
52 * @mqd_mutex: Mqd manager mutex.
54 * @dev: The kfd device structure coupled with this module.
56 * MQD stands for Memory Queue Descriptor which represents the current queue
57 * state in the memory and initiate the HQD (Hardware Queue Descriptor) state.
58 * This structure is actually a base class for the different types of MQDs
59 * structures for the variant ASICs that should be supported in the future.
60 * This base class is also contains all the MQD specific operations.
61 * Another important thing to mention is that each queue has a MQD that keeps
62 * his state (or context) after each preemption or reassignment.
63 * Basically there are a instances of the mqd manager class per MQD type per
64 * ASIC. Currently the kfd driver supports only Kaveri so there are instances
65 * per KFD_MQD_TYPE for each device.
68 extern int pipe_priority_map[];
70 struct kfd_mem_obj* (*allocate_mqd)(struct kfd_dev *kfd,
71 struct queue_properties *q);
73 void (*init_mqd)(struct mqd_manager *mm, void **mqd,
74 struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
75 struct queue_properties *q);
77 int (*load_mqd)(struct mqd_manager *mm, void *mqd,
78 uint32_t pipe_id, uint32_t queue_id,
79 struct queue_properties *p,
80 struct mm_struct *mms);
82 void (*update_mqd)(struct mqd_manager *mm, void *mqd,
83 struct queue_properties *q);
85 int (*destroy_mqd)(struct mqd_manager *mm, void *mqd,
86 enum kfd_preempt_type type,
87 unsigned int timeout, uint32_t pipe_id,
90 void (*free_mqd)(struct mqd_manager *mm, void *mqd,
91 struct kfd_mem_obj *mqd_mem_obj);
93 bool (*is_occupied)(struct mqd_manager *mm, void *mqd,
94 uint64_t queue_address, uint32_t pipe_id,
97 int (*get_wave_state)(struct mqd_manager *mm, void *mqd,
98 void __user *ctl_stack,
99 u32 *ctl_stack_used_size,
100 u32 *save_area_used_size);
102 #if defined(CONFIG_DEBUG_FS)
103 int (*debugfs_show_mqd)(struct seq_file *m, void *data);
105 uint32_t (*read_doorbell_id)(void *mqd);
107 struct mutex mqd_mutex;
112 struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev,
113 struct queue_properties *q);
115 struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
116 struct queue_properties *q);
117 void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
118 struct kfd_mem_obj *mqd_mem_obj);
120 void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm,
121 const uint32_t *cu_mask, uint32_t cu_mask_count,
124 #endif /* KFD_MQD_MANAGER_H_ */