1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */ 2 /* 3 * Copyright 2014-2022 Advanced Micro Devices, Inc. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21 * OTHER DEALINGS IN THE SOFTWARE. 22 * 23 */ 24 25 #ifndef KFD_DEVICE_QUEUE_MANAGER_H_ 26 #define KFD_DEVICE_QUEUE_MANAGER_H_ 27 28 #include <linux/rwsem.h> 29 #include <linux/list.h> 30 #include <linux/mutex.h> 31 #include <linux/sched/mm.h> 32 #include "kfd_priv.h" 33 #include "kfd_mqd_manager.h" 34 35 36 #define VMID_NUM 16 37 38 #define KFD_MES_PROCESS_QUANTUM 100000 39 #define KFD_MES_GANG_QUANTUM 10000 40 #define USE_DEFAULT_GRACE_PERIOD 0xffffffff 41 42 struct device_process_node { 43 struct qcm_process_device *qpd; 44 struct list_head list; 45 }; 46 47 union SQ_CMD_BITS { 48 struct { 49 uint32_t cmd:3; 50 uint32_t:1; 51 uint32_t mode:3; 52 uint32_t check_vmid:1; 53 uint32_t trap_id:3; 54 uint32_t:5; 55 uint32_t wave_id:4; 56 uint32_t simd_id:2; 57 uint32_t:2; 58 uint32_t queue_id:3; 59 uint32_t:1; 60 uint32_t vm_id:4; 61 } bitfields, bits; 62 uint32_t u32All; 63 signed int i32All; 64 float f32All; 65 }; 66 67 union GRBM_GFX_INDEX_BITS { 68 struct { 69 uint32_t instance_index:8; 70 uint32_t sh_index:8; 71 uint32_t se_index:8; 72 uint32_t:5; 73 uint32_t sh_broadcast_writes:1; 74 uint32_t instance_broadcast_writes:1; 75 uint32_t se_broadcast_writes:1; 76 } bitfields, bits; 77 uint32_t u32All; 78 signed int i32All; 79 float f32All; 80 }; 81 82 /** 83 * struct device_queue_manager_ops 84 * 85 * @create_queue: Queue creation routine. 86 * 87 * @destroy_queue: Queue destruction routine. 88 * 89 * @update_queue: Queue update routine. 90 * 91 * @exeute_queues: Dispatches the queues list to the H/W. 92 * 93 * @register_process: This routine associates a specific process with device. 94 * 95 * @unregister_process: destroys the associations between process to device. 96 * 97 * @initialize: Initializes the pipelines and memory module for that device. 98 * 99 * @start: Initializes the resources/modules the device needs for queues 100 * execution. This function is called on device initialization and after the 101 * system woke up after suspension. 102 * 103 * @stop: This routine stops execution of all the active queue running on the 104 * H/W and basically this function called on system suspend. 105 * 106 * @uninitialize: Destroys all the device queue manager resources allocated in 107 * initialize routine. 108 * 109 * @halt: This routine unmaps queues from runlist and set halt status to true 110 * so no more queues will be mapped to runlist until unhalt. 111 * 112 * @unhalt: This routine unset halt status to flase and maps queues back to 113 * runlist. 114 * 115 * @create_kernel_queue: Creates kernel queue. Used for debug queue. 116 * 117 * @destroy_kernel_queue: Destroys kernel queue. Used for debug queue. 118 * 119 * @set_cache_memory_policy: Sets memory policy (cached/ non cached) for the 120 * memory apertures. 121 * 122 * @process_termination: Clears all process queues belongs to that device. 123 * 124 * @evict_process_queues: Evict all active queues of a process 125 * 126 * @restore_process_queues: Restore all evicted queues of a process 127 * 128 * @get_wave_state: Retrieves context save state and optionally copies the 129 * control stack, if kept in the MQD, to the given userspace address. 130 * 131 * @reset_queues: reset queues which consume RAS poison 132 * @get_queue_checkpoint_info: Retrieves queue size information for CRIU checkpoint. 133 * 134 * @checkpoint_mqd: checkpoint queue MQD contents for CRIU. 135 */ 136 137 struct device_queue_manager_ops { 138 int (*create_queue)(struct device_queue_manager *dqm, 139 struct queue *q, 140 struct qcm_process_device *qpd, 141 const struct kfd_criu_queue_priv_data *qd, 142 const void *restore_mqd, 143 const void *restore_ctl_stack); 144 145 int (*destroy_queue)(struct device_queue_manager *dqm, 146 struct qcm_process_device *qpd, 147 struct queue *q); 148 149 int (*update_queue)(struct device_queue_manager *dqm, 150 struct queue *q, struct mqd_update_info *minfo); 151 152 int (*register_process)(struct device_queue_manager *dqm, 153 struct qcm_process_device *qpd); 154 155 int (*unregister_process)(struct device_queue_manager *dqm, 156 struct qcm_process_device *qpd); 157 158 int (*initialize)(struct device_queue_manager *dqm); 159 int (*start)(struct device_queue_manager *dqm); 160 int (*stop)(struct device_queue_manager *dqm); 161 void (*uninitialize)(struct device_queue_manager *dqm); 162 int (*halt)(struct device_queue_manager *dqm); 163 int (*unhalt)(struct device_queue_manager *dqm); 164 int (*create_kernel_queue)(struct device_queue_manager *dqm, 165 struct kernel_queue *kq, 166 struct qcm_process_device *qpd); 167 168 void (*destroy_kernel_queue)(struct device_queue_manager *dqm, 169 struct kernel_queue *kq, 170 struct qcm_process_device *qpd); 171 172 bool (*set_cache_memory_policy)(struct device_queue_manager *dqm, 173 struct qcm_process_device *qpd, 174 enum cache_policy default_policy, 175 enum cache_policy alternate_policy, 176 void __user *alternate_aperture_base, 177 uint64_t alternate_aperture_size); 178 179 int (*process_termination)(struct device_queue_manager *dqm, 180 struct qcm_process_device *qpd); 181 182 int (*evict_process_queues)(struct device_queue_manager *dqm, 183 struct qcm_process_device *qpd); 184 int (*restore_process_queues)(struct device_queue_manager *dqm, 185 struct qcm_process_device *qpd); 186 187 int (*get_wave_state)(struct device_queue_manager *dqm, 188 struct queue *q, 189 void __user *ctl_stack, 190 u32 *ctl_stack_used_size, 191 u32 *save_area_used_size); 192 193 int (*reset_queues)(struct device_queue_manager *dqm, 194 uint16_t pasid); 195 void (*get_queue_checkpoint_info)(struct device_queue_manager *dqm, 196 const struct queue *q, u32 *mqd_size, 197 u32 *ctl_stack_size); 198 199 int (*checkpoint_mqd)(struct device_queue_manager *dqm, 200 const struct queue *q, 201 void *mqd, 202 void *ctl_stack); 203 }; 204 205 struct device_queue_manager_asic_ops { 206 int (*update_qpd)(struct device_queue_manager *dqm, 207 struct qcm_process_device *qpd); 208 bool (*set_cache_memory_policy)(struct device_queue_manager *dqm, 209 struct qcm_process_device *qpd, 210 enum cache_policy default_policy, 211 enum cache_policy alternate_policy, 212 void __user *alternate_aperture_base, 213 uint64_t alternate_aperture_size); 214 void (*init_sdma_vm)(struct device_queue_manager *dqm, 215 struct queue *q, 216 struct qcm_process_device *qpd); 217 struct mqd_manager * (*mqd_manager_init)(enum KFD_MQD_TYPE type, 218 struct kfd_node *dev); 219 }; 220 221 struct dqm_detect_hang_info { 222 int pipe_id; 223 int queue_id; 224 int xcc_id; 225 uint64_t queue_address; 226 }; 227 228 /** 229 * struct device_queue_manager 230 * 231 * This struct is a base class for the kfd queues scheduler in the 232 * device level. The device base class should expose the basic operations 233 * for queue creation and queue destruction. This base class hides the 234 * scheduling mode of the driver and the specific implementation of the 235 * concrete device. This class is the only class in the queues scheduler 236 * that configures the H/W. 237 * 238 */ 239 240 struct device_queue_manager { 241 struct device_queue_manager_ops ops; 242 struct device_queue_manager_asic_ops asic_ops; 243 244 struct mqd_manager *mqd_mgrs[KFD_MQD_TYPE_MAX]; 245 struct packet_manager packet_mgr; 246 struct kfd_node *dev; 247 struct mutex lock_hidden; /* use dqm_lock/unlock(dqm) */ 248 struct list_head queues; 249 unsigned int saved_flags; 250 unsigned int processes_count; 251 unsigned int active_queue_count; 252 unsigned int active_cp_queue_count; 253 unsigned int gws_queue_count; 254 unsigned int total_queue_count; 255 unsigned int next_pipe_to_allocate; 256 unsigned int *allocated_queues; 257 DECLARE_BITMAP(sdma_bitmap, KFD_MAX_SDMA_QUEUES); 258 DECLARE_BITMAP(xgmi_sdma_bitmap, KFD_MAX_SDMA_QUEUES); 259 /* the pasid mapping for each kfd vmid */ 260 uint16_t vmid_pasid[VMID_NUM]; 261 uint64_t pipelines_addr; 262 uint64_t fence_gpu_addr; 263 uint64_t *fence_addr; 264 struct kfd_mem_obj *fence_mem; 265 bool active_runlist; 266 int sched_policy; 267 uint32_t trap_debug_vmid; 268 269 /* hw exception */ 270 bool is_hws_hang; 271 bool is_resetting; 272 struct work_struct hw_exception_work; 273 struct kfd_mem_obj hiq_sdma_mqd; 274 bool sched_running; 275 bool sched_halt; 276 277 /* used for GFX 9.4.3 only */ 278 uint32_t current_logical_xcc_start; 279 280 uint32_t wait_times; 281 282 wait_queue_head_t destroy_wait; 283 284 /* for per-queue reset support */ 285 struct dqm_detect_hang_info *detect_hang_info; 286 size_t detect_hang_info_size; 287 int detect_hang_count; 288 }; 289 290 void device_queue_manager_init_cik( 291 struct device_queue_manager_asic_ops *asic_ops); 292 void device_queue_manager_init_vi( 293 struct device_queue_manager_asic_ops *asic_ops); 294 void device_queue_manager_init_v9( 295 struct device_queue_manager_asic_ops *asic_ops); 296 void device_queue_manager_init_v10( 297 struct device_queue_manager_asic_ops *asic_ops); 298 void device_queue_manager_init_v11( 299 struct device_queue_manager_asic_ops *asic_ops); 300 void device_queue_manager_init_v12( 301 struct device_queue_manager_asic_ops *asic_ops); 302 void program_sh_mem_settings(struct device_queue_manager *dqm, 303 struct qcm_process_device *qpd); 304 unsigned int get_cp_queues_num(struct device_queue_manager *dqm); 305 unsigned int get_queues_per_pipe(struct device_queue_manager *dqm); 306 unsigned int get_pipes_per_mec(struct device_queue_manager *dqm); 307 unsigned int get_num_sdma_queues(struct device_queue_manager *dqm); 308 unsigned int get_num_xgmi_sdma_queues(struct device_queue_manager *dqm); 309 int reserve_debug_trap_vmid(struct device_queue_manager *dqm, 310 struct qcm_process_device *qpd); 311 int release_debug_trap_vmid(struct device_queue_manager *dqm, 312 struct qcm_process_device *qpd); 313 int suspend_queues(struct kfd_process *p, 314 uint32_t num_queues, 315 uint32_t grace_period, 316 uint64_t exception_clear_mask, 317 uint32_t *usr_queue_id_array); 318 int resume_queues(struct kfd_process *p, 319 uint32_t num_queues, 320 uint32_t *usr_queue_id_array); 321 void set_queue_snapshot_entry(struct queue *q, 322 uint64_t exception_clear_mask, 323 struct kfd_queue_snapshot_entry *qss_entry); 324 int debug_lock_and_unmap(struct device_queue_manager *dqm); 325 int debug_map_and_unlock(struct device_queue_manager *dqm); 326 int debug_refresh_runlist(struct device_queue_manager *dqm); 327 328 static inline unsigned int get_sh_mem_bases_32(struct kfd_process_device *pdd) 329 { 330 return (pdd->lds_base >> 16) & 0xFF; 331 } 332 333 static inline unsigned int 334 get_sh_mem_bases_nybble_64(struct kfd_process_device *pdd) 335 { 336 return (pdd->lds_base >> 60) & 0x0E; 337 } 338 339 /* The DQM lock can be taken in MMU notifiers. Make sure no reclaim-FS 340 * happens while holding this lock anywhere to prevent deadlocks when 341 * an MMU notifier runs in reclaim-FS context. 342 */ 343 static inline void dqm_lock(struct device_queue_manager *dqm) 344 { 345 mutex_lock(&dqm->lock_hidden); 346 dqm->saved_flags = memalloc_noreclaim_save(); 347 } 348 static inline void dqm_unlock(struct device_queue_manager *dqm) 349 { 350 memalloc_noreclaim_restore(dqm->saved_flags); 351 mutex_unlock(&dqm->lock_hidden); 352 } 353 354 static inline int read_sdma_queue_counter(uint64_t __user *q_rptr, uint64_t *val) 355 { 356 /* SDMA activity counter is stored at queue's RPTR + 0x8 location. */ 357 return get_user(*val, q_rptr + 1); 358 } 359 #endif /* KFD_DEVICE_QUEUE_MANAGER_H_ */ 360