drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h

   1 /*
   2  * Copyright 2014 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23
  24 #ifndef KFD_MQD_MANAGER_H_
  25 #define KFD_MQD_MANAGER_H_
  26
  27 #include "kfd_priv.h"
  28
  29 #define KFD_MAX_NUM_SE 8
  30
  31 /**
  32  * struct mqd_manager
  33  *
  34  * @init_mqd: Allocates the mqd buffer on local gpu memory and initialize it.
  35  *
  36  * @load_mqd: Loads the mqd to a concrete hqd slot. Used only for no cp
  37  * scheduling mode.
  38  *
  39  * @update_mqd: Handles a update call for the MQD
  40  *
  41  * @destroy_mqd: Destroys the HQD slot and by that preempt the relevant queue.
  42  * Used only for no cp scheduling.
  43  *
  44  * @free_mqd: Releases the mqd buffer from local gpu memory.
  45  *
  46  * @is_occupied: Checks if the relevant HQD slot is occupied.
  47  *
  48  * @get_wave_state: Retrieves context save state and optionally copies the
  49  * control stack, if kept in the MQD, to the given userspace address.
  50  *
  51  * @mqd_mutex: Mqd manager mutex.
  52  *
  53  * @dev: The kfd device structure coupled with this module.
  54  *
  55  * MQD stands for Memory Queue Descriptor which represents the current queue
  56  * state in the memory and initiate the HQD (Hardware Queue Descriptor) state.
  57  * This structure is actually a base class for the different types of MQDs
  58  * structures for the variant ASICs that should be supported in the future.
  59  * This base class is also contains all the MQD specific operations.
  60  * Another important thing to mention is that each queue has a MQD that keeps
  61  * his state (or context) after each preemption or reassignment.
  62  * Basically there are a instances of the mqd manager class per MQD type per
  63  * ASIC. Currently the kfd driver supports only Kaveri so there are instances
  64  * per KFD_MQD_TYPE for each device.
  65  *
  66  */
  67 extern int pipe_priority_map[];
  68 struct mqd_manager {
  69         struct kfd_mem_obj*     (*allocate_mqd)(struct kfd_dev *kfd,
  70                 struct queue_properties *q);
  71
  72         void    (*init_mqd)(struct mqd_manager *mm, void **mqd,
  73                         struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
  74                         struct queue_properties *q);
  75
  76         int     (*load_mqd)(struct mqd_manager *mm, void *mqd,
  77                                 uint32_t pipe_id, uint32_t queue_id,
  78                                 struct queue_properties *p,
  79                                 struct mm_struct *mms);
  80
  81         void    (*update_mqd)(struct mqd_manager *mm, void *mqd,
  82                                 struct queue_properties *q);
  83
  84         int     (*destroy_mqd)(struct mqd_manager *mm, void *mqd,
  85                                 enum kfd_preempt_type type,
  86                                 unsigned int timeout, uint32_t pipe_id,
  87                                 uint32_t queue_id);
  88
  89         void    (*free_mqd)(struct mqd_manager *mm, void *mqd,
  90                                 struct kfd_mem_obj *mqd_mem_obj);
  91
  92         bool    (*is_occupied)(struct mqd_manager *mm, void *mqd,
  93                                 uint64_t queue_address, uint32_t pipe_id,
  94                                 uint32_t queue_id);
  95
  96         int     (*get_wave_state)(struct mqd_manager *mm, void *mqd,
  97                                   void __user *ctl_stack,
  98                                   u32 *ctl_stack_used_size,
  99                                   u32 *save_area_used_size);
 100
 101 #if defined(CONFIG_DEBUG_FS)
 102         int     (*debugfs_show_mqd)(struct seq_file *m, void *data);
 103 #endif
 104
 105         struct mutex    mqd_mutex;
 106         struct kfd_dev  *dev;
 107         uint32_t mqd_size;
 108 };
 109
 110 struct kfd_mem_obj *allocate_hiq_mqd(struct kfd_dev *dev,
 111                                 struct queue_properties *q);
 112
 113 struct kfd_mem_obj *allocate_sdma_mqd(struct kfd_dev *dev,
 114                                         struct queue_properties *q);
 115 void free_mqd_hiq_sdma(struct mqd_manager *mm, void *mqd,
 116                                 struct kfd_mem_obj *mqd_mem_obj);
 117
 118 void mqd_symmetrically_map_cu_mask(struct mqd_manager *mm,
 119                 const uint32_t *cu_mask, uint32_t cu_mask_count,
 120                 uint32_t *se_mask);
 121
 122 #endif /* KFD_MQD_MANAGER_H_ */