root/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h

INCLUDED FROM

DEFINITIONS

1. get_sh_mem_bases_32
2. get_sh_mem_bases_nybble_64
3. dqm_lock
4. dqm_unlock

   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_DEVICE_QUEUE_MANAGER_H_
  25 #define KFD_DEVICE_QUEUE_MANAGER_H_
  26 
  27 #include <linux/rwsem.h>
  28 #include <linux/list.h>
  29 #include <linux/mutex.h>
  30 #include <linux/sched/mm.h>
  31 #include "kfd_priv.h"
  32 #include "kfd_mqd_manager.h"
  33 
  34 
  35 struct device_process_node {
  36         struct qcm_process_device *qpd;
  37         struct list_head list;
  38 };
  39 
  40 /**
  41  * struct device_queue_manager_ops
  42  *
  43  * @create_queue: Queue creation routine.
  44  *
  45  * @destroy_queue: Queue destruction routine.
  46  *
  47  * @update_queue: Queue update routine.
  48  *
  49  * @exeute_queues: Dispatches the queues list to the H/W.
  50  *
  51  * @register_process: This routine associates a specific process with device.
  52  *
  53  * @unregister_process: destroys the associations between process to device.
  54  *
  55  * @initialize: Initializes the pipelines and memory module for that device.
  56  *
  57  * @start: Initializes the resources/modules the the device needs for queues
  58  * execution. This function is called on device initialization and after the
  59  * system woke up after suspension.
  60  *
  61  * @stop: This routine stops execution of all the active queue running on the
  62  * H/W and basically this function called on system suspend.
  63  *
  64  * @uninitialize: Destroys all the device queue manager resources allocated in
  65  * initialize routine.
  66  *
  67  * @create_kernel_queue: Creates kernel queue. Used for debug queue.
  68  *
  69  * @destroy_kernel_queue: Destroys kernel queue. Used for debug queue.
  70  *
  71  * @set_cache_memory_policy: Sets memory policy (cached/ non cached) for the
  72  * memory apertures.
  73  *
  74  * @process_termination: Clears all process queues belongs to that device.
  75  *
  76  * @evict_process_queues: Evict all active queues of a process
  77  *
  78  * @restore_process_queues: Restore all evicted queues queues of a process
  79  *
  80  * @get_wave_state: Retrieves context save state and optionally copies the
  81  * control stack, if kept in the MQD, to the given userspace address.
  82  */
  83 
  84 struct device_queue_manager_ops {
  85         int     (*create_queue)(struct device_queue_manager *dqm,
  86                                 struct queue *q,
  87                                 struct qcm_process_device *qpd);
  88 
  89         int     (*destroy_queue)(struct device_queue_manager *dqm,
  90                                 struct qcm_process_device *qpd,
  91                                 struct queue *q);
  92 
  93         int     (*update_queue)(struct device_queue_manager *dqm,
  94                                 struct queue *q);
  95 
  96         int     (*register_process)(struct device_queue_manager *dqm,
  97                                         struct qcm_process_device *qpd);
  98 
  99         int     (*unregister_process)(struct device_queue_manager *dqm,
 100                                         struct qcm_process_device *qpd);
 101 
 102         int     (*initialize)(struct device_queue_manager *dqm);
 103         int     (*start)(struct device_queue_manager *dqm);
 104         int     (*stop)(struct device_queue_manager *dqm);
 105         void    (*uninitialize)(struct device_queue_manager *dqm);
 106         int     (*create_kernel_queue)(struct device_queue_manager *dqm,
 107                                         struct kernel_queue *kq,
 108                                         struct qcm_process_device *qpd);
 109 
 110         void    (*destroy_kernel_queue)(struct device_queue_manager *dqm,
 111                                         struct kernel_queue *kq,
 112                                         struct qcm_process_device *qpd);
 113 
 114         bool    (*set_cache_memory_policy)(struct device_queue_manager *dqm,
 115                                            struct qcm_process_device *qpd,
 116                                            enum cache_policy default_policy,
 117                                            enum cache_policy alternate_policy,
 118                                            void __user *alternate_aperture_base,
 119                                            uint64_t alternate_aperture_size);
 120 
 121         int     (*set_trap_handler)(struct device_queue_manager *dqm,
 122                                     struct qcm_process_device *qpd,
 123                                     uint64_t tba_addr,
 124                                     uint64_t tma_addr);
 125 
 126         int (*process_termination)(struct device_queue_manager *dqm,
 127                         struct qcm_process_device *qpd);
 128 
 129         int (*evict_process_queues)(struct device_queue_manager *dqm,
 130                                     struct qcm_process_device *qpd);
 131         int (*restore_process_queues)(struct device_queue_manager *dqm,
 132                                       struct qcm_process_device *qpd);
 133 
 134         int     (*get_wave_state)(struct device_queue_manager *dqm,
 135                                   struct queue *q,
 136                                   void __user *ctl_stack,
 137                                   u32 *ctl_stack_used_size,
 138                                   u32 *save_area_used_size);
 139 };
 140 
 141 struct device_queue_manager_asic_ops {
 142         int     (*update_qpd)(struct device_queue_manager *dqm,
 143                                         struct qcm_process_device *qpd);
 144         bool    (*set_cache_memory_policy)(struct device_queue_manager *dqm,
 145                                            struct qcm_process_device *qpd,
 146                                            enum cache_policy default_policy,
 147                                            enum cache_policy alternate_policy,
 148                                            void __user *alternate_aperture_base,
 149                                            uint64_t alternate_aperture_size);
 150         void    (*init_sdma_vm)(struct device_queue_manager *dqm,
 151                                 struct queue *q,
 152                                 struct qcm_process_device *qpd);
 153         struct mqd_manager *    (*mqd_manager_init)(enum KFD_MQD_TYPE type,
 154                                  struct kfd_dev *dev);
 155 };
 156 
 157 /**
 158  * struct device_queue_manager
 159  *
 160  * This struct is a base class for the kfd queues scheduler in the
 161  * device level. The device base class should expose the basic operations
 162  * for queue creation and queue destruction. This base class hides the
 163  * scheduling mode of the driver and the specific implementation of the
 164  * concrete device. This class is the only class in the queues scheduler
 165  * that configures the H/W.
 166  *
 167  */
 168 
 169 struct device_queue_manager {
 170         struct device_queue_manager_ops ops;
 171         struct device_queue_manager_asic_ops asic_ops;
 172 
 173         struct mqd_manager      *mqd_mgrs[KFD_MQD_TYPE_MAX];
 174         struct packet_manager   packets;
 175         struct kfd_dev          *dev;
 176         struct mutex            lock_hidden; /* use dqm_lock/unlock(dqm) */
 177         struct list_head        queues;
 178         unsigned int            saved_flags;
 179         unsigned int            processes_count;
 180         unsigned int            queue_count;
 181         unsigned int            sdma_queue_count;
 182         unsigned int            xgmi_sdma_queue_count;
 183         unsigned int            total_queue_count;
 184         unsigned int            next_pipe_to_allocate;
 185         unsigned int            *allocated_queues;
 186         uint64_t                sdma_bitmap;
 187         uint64_t                xgmi_sdma_bitmap;
 188         unsigned int            vmid_bitmap;
 189         uint64_t                pipelines_addr;
 190         struct kfd_mem_obj      *pipeline_mem;
 191         uint64_t                fence_gpu_addr;
 192         unsigned int            *fence_addr;
 193         struct kfd_mem_obj      *fence_mem;
 194         bool                    active_runlist;
 195         int                     sched_policy;
 196 
 197         /* hw exception  */
 198         bool                    is_hws_hang;
 199         struct work_struct      hw_exception_work;
 200         struct kfd_mem_obj      hiq_sdma_mqd;
 201 };
 202 
 203 void device_queue_manager_init_cik(
 204                 struct device_queue_manager_asic_ops *asic_ops);
 205 void device_queue_manager_init_cik_hawaii(
 206                 struct device_queue_manager_asic_ops *asic_ops);
 207 void device_queue_manager_init_vi(
 208                 struct device_queue_manager_asic_ops *asic_ops);
 209 void device_queue_manager_init_vi_tonga(
 210                 struct device_queue_manager_asic_ops *asic_ops);
 211 void device_queue_manager_init_v9(
 212                 struct device_queue_manager_asic_ops *asic_ops);
 213 void device_queue_manager_init_v10_navi10(
 214                 struct device_queue_manager_asic_ops *asic_ops);
 215 void program_sh_mem_settings(struct device_queue_manager *dqm,
 216                                         struct qcm_process_device *qpd);
 217 unsigned int get_queues_num(struct device_queue_manager *dqm);
 218 unsigned int get_queues_per_pipe(struct device_queue_manager *dqm);
 219 unsigned int get_pipes_per_mec(struct device_queue_manager *dqm);
 220 unsigned int get_num_sdma_queues(struct device_queue_manager *dqm);
 221 unsigned int get_num_xgmi_sdma_queues(struct device_queue_manager *dqm);
 222 
 223 static inline unsigned int get_sh_mem_bases_32(struct kfd_process_device *pdd)
 224 {
 225         return (pdd->lds_base >> 16) & 0xFF;
 226 }
 227 
 228 static inline unsigned int
 229 get_sh_mem_bases_nybble_64(struct kfd_process_device *pdd)
 230 {
 231         return (pdd->lds_base >> 60) & 0x0E;
 232 }
 233 
 234 /* The DQM lock can be taken in MMU notifiers. Make sure no reclaim-FS
 235  * happens while holding this lock anywhere to prevent deadlocks when
 236  * an MMU notifier runs in reclaim-FS context.
 237  */
 238 static inline void dqm_lock(struct device_queue_manager *dqm)
 239 {
 240         mutex_lock(&dqm->lock_hidden);
 241         dqm->saved_flags = memalloc_nofs_save();
 242 }
 243 static inline void dqm_unlock(struct device_queue_manager *dqm)
 244 {
 245         memalloc_nofs_restore(dqm->saved_flags);
 246         mutex_unlock(&dqm->lock_hidden);
 247 }
 248 
 249 #endif /* KFD_DEVICE_QUEUE_MANAGER_H_ */