drivers/gpu/drm/amd/amdkfd/kfd_device_queue_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_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 #define KFD_UNMAP_LATENCY_MS                    (4000)
  35 #define QUEUE_PREEMPT_DEFAULT_TIMEOUT_MS (2 * KFD_UNMAP_LATENCY_MS + 1000)
  36 #define KFD_SDMA_QUEUES_PER_ENGINE              (2)
  37
  38 struct device_process_node {
  39         struct qcm_process_device *qpd;
  40         struct list_head list;
  41 };
  42
  43 /**
  44  * struct device_queue_manager_ops
  45  *
  46  * @create_queue: Queue creation routine.
  47  *
  48  * @destroy_queue: Queue destruction routine.
  49  *
  50  * @update_queue: Queue update routine.
  51  *
  52  * @get_mqd_manager: Returns the mqd manager according to the mqd type.
  53  *
  54  * @exeute_queues: Dispatches the queues list to the H/W.
  55  *
  56  * @register_process: This routine associates a specific process with device.
  57  *
  58  * @unregister_process: destroys the associations between process to device.
  59  *
  60  * @initialize: Initializes the pipelines and memory module for that device.
  61  *
  62  * @start: Initializes the resources/modules the the device needs for queues
  63  * execution. This function is called on device initialization and after the
  64  * system woke up after suspension.
  65  *
  66  * @stop: This routine stops execution of all the active queue running on the
  67  * H/W and basically this function called on system suspend.
  68  *
  69  * @uninitialize: Destroys all the device queue manager resources allocated in
  70  * initialize routine.
  71  *
  72  * @create_kernel_queue: Creates kernel queue. Used for debug queue.
  73  *
  74  * @destroy_kernel_queue: Destroys kernel queue. Used for debug queue.
  75  *
  76  * @set_cache_memory_policy: Sets memory policy (cached/ non cached) for the
  77  * memory apertures.
  78  *
  79  * @process_termination: Clears all process queues belongs to that device.
  80  *
  81  * @evict_process_queues: Evict all active queues of a process
  82  *
  83  * @restore_process_queues: Restore all evicted queues queues of a process
  84  *
  85  */
  86
  87 struct device_queue_manager_ops {
  88         int     (*create_queue)(struct device_queue_manager *dqm,
  89                                 struct queue *q,
  90                                 struct qcm_process_device *qpd);
  91
  92         int     (*destroy_queue)(struct device_queue_manager *dqm,
  93                                 struct qcm_process_device *qpd,
  94                                 struct queue *q);
  95
  96         int     (*update_queue)(struct device_queue_manager *dqm,
  97                                 struct queue *q);
  98
  99         struct mqd_manager * (*get_mqd_manager)
 100                                         (struct device_queue_manager *dqm,
 101                                         enum KFD_MQD_TYPE type);
 102
 103         int     (*register_process)(struct device_queue_manager *dqm,
 104                                         struct qcm_process_device *qpd);
 105
 106         int     (*unregister_process)(struct device_queue_manager *dqm,
 107                                         struct qcm_process_device *qpd);
 108
 109         int     (*initialize)(struct device_queue_manager *dqm);
 110         int     (*start)(struct device_queue_manager *dqm);
 111         int     (*stop)(struct device_queue_manager *dqm);
 112         void    (*uninitialize)(struct device_queue_manager *dqm);
 113         int     (*create_kernel_queue)(struct device_queue_manager *dqm,
 114                                         struct kernel_queue *kq,
 115                                         struct qcm_process_device *qpd);
 116
 117         void    (*destroy_kernel_queue)(struct device_queue_manager *dqm,
 118                                         struct kernel_queue *kq,
 119                                         struct qcm_process_device *qpd);
 120
 121         bool    (*set_cache_memory_policy)(struct device_queue_manager *dqm,
 122                                            struct qcm_process_device *qpd,
 123                                            enum cache_policy default_policy,
 124                                            enum cache_policy alternate_policy,
 125                                            void __user *alternate_aperture_base,
 126                                            uint64_t alternate_aperture_size);
 127
 128         int     (*set_trap_handler)(struct device_queue_manager *dqm,
 129                                     struct qcm_process_device *qpd,
 130                                     uint64_t tba_addr,
 131                                     uint64_t tma_addr);
 132
 133         int (*process_termination)(struct device_queue_manager *dqm,
 134                         struct qcm_process_device *qpd);
 135
 136         int (*evict_process_queues)(struct device_queue_manager *dqm,
 137                                     struct qcm_process_device *qpd);
 138         int (*restore_process_queues)(struct device_queue_manager *dqm,
 139                                       struct qcm_process_device *qpd);
 140 };
 141
 142 struct device_queue_manager_asic_ops {
 143         int     (*update_qpd)(struct device_queue_manager *dqm,
 144                                         struct qcm_process_device *qpd);
 145         bool    (*set_cache_memory_policy)(struct device_queue_manager *dqm,
 146                                            struct qcm_process_device *qpd,
 147                                            enum cache_policy default_policy,
 148                                            enum cache_policy alternate_policy,
 149                                            void __user *alternate_aperture_base,
 150                                            uint64_t alternate_aperture_size);
 151         void    (*init_sdma_vm)(struct device_queue_manager *dqm,
 152                                 struct queue *q,
 153                                 struct qcm_process_device *qpd);
 154 };
 155
 156 /**
 157  * struct device_queue_manager
 158  *
 159  * This struct is a base class for the kfd queues scheduler in the
 160  * device level. The device base class should expose the basic operations
 161  * for queue creation and queue destruction. This base class hides the
 162  * scheduling mode of the driver and the specific implementation of the
 163  * concrete device. This class is the only class in the queues scheduler
 164  * that configures the H/W.
 165  *
 166  */
 167
 168 struct device_queue_manager {
 169         struct device_queue_manager_ops ops;
 170         struct device_queue_manager_asic_ops asic_ops;
 171
 172         struct mqd_manager      *mqd_mgrs[KFD_MQD_TYPE_MAX];
 173         struct packet_manager   packets;
 174         struct kfd_dev          *dev;
 175         struct mutex            lock_hidden; /* use dqm_lock/unlock(dqm) */
 176         struct list_head        queues;
 177         unsigned int            saved_flags;
 178         unsigned int            processes_count;
 179         unsigned int            queue_count;
 180         unsigned int            sdma_queue_count;
 181         unsigned int            total_queue_count;
 182         unsigned int            next_pipe_to_allocate;
 183         unsigned int            *allocated_queues;
 184         unsigned int            sdma_bitmap;
 185         unsigned int            vmid_bitmap;
 186         uint64_t                pipelines_addr;
 187         struct kfd_mem_obj      *pipeline_mem;
 188         uint64_t                fence_gpu_addr;
 189         unsigned int            *fence_addr;
 190         struct kfd_mem_obj      *fence_mem;
 191         bool                    active_runlist;
 192         int                     sched_policy;
 193
 194         /* hw exception  */
 195         bool                    is_hws_hang;
 196         struct work_struct      hw_exception_work;
 197 };
 198
 199 void device_queue_manager_init_cik(
 200                 struct device_queue_manager_asic_ops *asic_ops);
 201 void device_queue_manager_init_cik_hawaii(
 202                 struct device_queue_manager_asic_ops *asic_ops);
 203 void device_queue_manager_init_vi(
 204                 struct device_queue_manager_asic_ops *asic_ops);
 205 void device_queue_manager_init_vi_tonga(
 206                 struct device_queue_manager_asic_ops *asic_ops);
 207 void device_queue_manager_init_v9(
 208                 struct device_queue_manager_asic_ops *asic_ops);
 209 void program_sh_mem_settings(struct device_queue_manager *dqm,
 210                                         struct qcm_process_device *qpd);
 211 unsigned int get_queues_num(struct device_queue_manager *dqm);
 212 unsigned int get_queues_per_pipe(struct device_queue_manager *dqm);
 213 unsigned int get_pipes_per_mec(struct device_queue_manager *dqm);
 214 unsigned int get_num_sdma_queues(struct device_queue_manager *dqm);
 215
 216 static inline unsigned int get_sh_mem_bases_32(struct kfd_process_device *pdd)
 217 {
 218         return (pdd->lds_base >> 16) & 0xFF;
 219 }
 220
 221 static inline unsigned int
 222 get_sh_mem_bases_nybble_64(struct kfd_process_device *pdd)
 223 {
 224         return (pdd->lds_base >> 60) & 0x0E;
 225 }
 226
 227 /* The DQM lock can be taken in MMU notifiers. Make sure no reclaim-FS
 228  * happens while holding this lock anywhere to prevent deadlocks when
 229  * an MMU notifier runs in reclaim-FS context.
 230  */
 231 static inline void dqm_lock(struct device_queue_manager *dqm)
 232 {
 233         mutex_lock(&dqm->lock_hidden);
 234         dqm->saved_flags = memalloc_nofs_save();
 235 }
 236 static inline void dqm_unlock(struct device_queue_manager *dqm)
 237 {
 238         memalloc_nofs_restore(dqm->saved_flags);
 239         mutex_unlock(&dqm->lock_hidden);
 240 }
 241
 242 #endif /* KFD_DEVICE_QUEUE_MANAGER_H_ */