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
  37 struct device_process_node {
  38         struct qcm_process_device *qpd;
  39         struct list_head list;
  40 };
  41
  42 /**
  43  * struct device_queue_manager_ops
  44  *
  45  * @create_queue: Queue creation routine.
  46  *
  47  * @destroy_queue: Queue destruction routine.
  48  *
  49  * @update_queue: Queue update routine.
  50  *
  51  * @get_mqd_manager: Returns the mqd manager according to the mqd type.
  52  *
  53  * @exeute_queues: Dispatches the queues list to the H/W.
  54  *
  55  * @register_process: This routine associates a specific process with device.
  56  *
  57  * @unregister_process: destroys the associations between process to device.
  58  *
  59  * @initialize: Initializes the pipelines and memory module for that device.
  60  *
  61  * @start: Initializes the resources/modules the the device needs for queues
  62  * execution. This function is called on device initialization and after the
  63  * system woke up after suspension.
  64  *
  65  * @stop: This routine stops execution of all the active queue running on the
  66  * H/W and basically this function called on system suspend.
  67  *
  68  * @uninitialize: Destroys all the device queue manager resources allocated in
  69  * initialize routine.
  70  *
  71  * @create_kernel_queue: Creates kernel queue. Used for debug queue.
  72  *
  73  * @destroy_kernel_queue: Destroys kernel queue. Used for debug queue.
  74  *
  75  * @set_cache_memory_policy: Sets memory policy (cached/ non cached) for the
  76  * memory apertures.
  77  *
  78  * @process_termination: Clears all process queues belongs to that device.
  79  *
  80  * @evict_process_queues: Evict all active queues of a process
  81  *
  82  * @restore_process_queues: Restore all evicted queues queues of a process
  83  *
  84  * @get_wave_state: Retrieves context save state and optionally copies the
  85  * control stack, if kept in the MQD, to the given userspace address.
  86  */
  87
  88 struct device_queue_manager_ops {
  89         int     (*create_queue)(struct device_queue_manager *dqm,
  90                                 struct queue *q,
  91                                 struct qcm_process_device *qpd);
  92
  93         int     (*destroy_queue)(struct device_queue_manager *dqm,
  94                                 struct qcm_process_device *qpd,
  95                                 struct queue *q);
  96
  97         int     (*update_queue)(struct device_queue_manager *dqm,
  98                                 struct queue *q);
  99
 100         struct mqd_manager * (*get_mqd_manager)
 101                                         (struct device_queue_manager *dqm,
 102                                         enum KFD_MQD_TYPE type);
 103
 104         int     (*register_process)(struct device_queue_manager *dqm,
 105                                         struct qcm_process_device *qpd);
 106
 107         int     (*unregister_process)(struct device_queue_manager *dqm,
 108                                         struct qcm_process_device *qpd);
 109
 110         int     (*initialize)(struct device_queue_manager *dqm);
 111         int     (*start)(struct device_queue_manager *dqm);
 112         int     (*stop)(struct device_queue_manager *dqm);
 113         void    (*uninitialize)(struct device_queue_manager *dqm);
 114         int     (*create_kernel_queue)(struct device_queue_manager *dqm,
 115                                         struct kernel_queue *kq,
 116                                         struct qcm_process_device *qpd);
 117
 118         void    (*destroy_kernel_queue)(struct device_queue_manager *dqm,
 119                                         struct kernel_queue *kq,
 120                                         struct qcm_process_device *qpd);
 121
 122         bool    (*set_cache_memory_policy)(struct device_queue_manager *dqm,
 123                                            struct qcm_process_device *qpd,
 124                                            enum cache_policy default_policy,
 125                                            enum cache_policy alternate_policy,
 126                                            void __user *alternate_aperture_base,
 127                                            uint64_t alternate_aperture_size);
 128
 129         int     (*set_trap_handler)(struct device_queue_manager *dqm,
 130                                     struct qcm_process_device *qpd,
 131                                     uint64_t tba_addr,
 132                                     uint64_t tma_addr);
 133
 134         int (*process_termination)(struct device_queue_manager *dqm,
 135                         struct qcm_process_device *qpd);
 136
 137         int (*evict_process_queues)(struct device_queue_manager *dqm,
 138                                     struct qcm_process_device *qpd);
 139         int (*restore_process_queues)(struct device_queue_manager *dqm,
 140                                       struct qcm_process_device *qpd);
 141
 142         int     (*get_wave_state)(struct device_queue_manager *dqm,
 143                                   struct queue *q,
 144                                   void __user *ctl_stack,
 145                                   u32 *ctl_stack_used_size,
 146                                   u32 *save_area_used_size);
 147 };
 148
 149 struct device_queue_manager_asic_ops {
 150         int     (*update_qpd)(struct device_queue_manager *dqm,
 151                                         struct qcm_process_device *qpd);
 152         bool    (*set_cache_memory_policy)(struct device_queue_manager *dqm,
 153                                            struct qcm_process_device *qpd,
 154                                            enum cache_policy default_policy,
 155                                            enum cache_policy alternate_policy,
 156                                            void __user *alternate_aperture_base,
 157                                            uint64_t alternate_aperture_size);
 158         void    (*init_sdma_vm)(struct device_queue_manager *dqm,
 159                                 struct queue *q,
 160                                 struct qcm_process_device *qpd);
 161 };
 162
 163 /**
 164  * struct device_queue_manager
 165  *
 166  * This struct is a base class for the kfd queues scheduler in the
 167  * device level. The device base class should expose the basic operations
 168  * for queue creation and queue destruction. This base class hides the
 169  * scheduling mode of the driver and the specific implementation of the
 170  * concrete device. This class is the only class in the queues scheduler
 171  * that configures the H/W.
 172  *
 173  */
 174
 175 struct device_queue_manager {
 176         struct device_queue_manager_ops ops;
 177         struct device_queue_manager_asic_ops asic_ops;
 178
 179         struct mqd_manager      *mqd_mgrs[KFD_MQD_TYPE_MAX];
 180         struct packet_manager   packets;
 181         struct kfd_dev          *dev;
 182         struct mutex            lock_hidden; /* use dqm_lock/unlock(dqm) */
 183         struct list_head        queues;
 184         unsigned int            saved_flags;
 185         unsigned int            processes_count;
 186         unsigned int            queue_count;
 187         unsigned int            sdma_queue_count;
 188         unsigned int            total_queue_count;
 189         unsigned int            next_pipe_to_allocate;
 190         unsigned int            *allocated_queues;
 191         unsigned int            sdma_bitmap;
 192         unsigned int            vmid_bitmap;
 193         uint64_t                pipelines_addr;
 194         struct kfd_mem_obj      *pipeline_mem;
 195         uint64_t                fence_gpu_addr;
 196         unsigned int            *fence_addr;
 197         struct kfd_mem_obj      *fence_mem;
 198         bool                    active_runlist;
 199         int                     sched_policy;
 200
 201         /* hw exception  */
 202         bool                    is_hws_hang;
 203         struct work_struct      hw_exception_work;
 204 };
 205
 206 void device_queue_manager_init_cik(
 207                 struct device_queue_manager_asic_ops *asic_ops);
 208 void device_queue_manager_init_cik_hawaii(
 209                 struct device_queue_manager_asic_ops *asic_ops);
 210 void device_queue_manager_init_vi(
 211                 struct device_queue_manager_asic_ops *asic_ops);
 212 void device_queue_manager_init_vi_tonga(
 213                 struct device_queue_manager_asic_ops *asic_ops);
 214 void device_queue_manager_init_v9(
 215                 struct device_queue_manager_asic_ops *asic_ops);
 216 void program_sh_mem_settings(struct device_queue_manager *dqm,
 217                                         struct qcm_process_device *qpd);
 218 unsigned int get_queues_num(struct device_queue_manager *dqm);
 219 unsigned int get_queues_per_pipe(struct device_queue_manager *dqm);
 220 unsigned int get_pipes_per_mec(struct device_queue_manager *dqm);
 221 unsigned int get_num_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_ */