Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 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 | #include <linux/slab.h> |
| 25 | #include <linux/list.h> |
| 26 | #include <linux/types.h> |
| 27 | #include <linux/printk.h> |
| 28 | #include <linux/bitops.h> |
| 29 | #include "kfd_priv.h" |
| 30 | #include "kfd_device_queue_manager.h" |
| 31 | #include "kfd_mqd_manager.h" |
| 32 | #include "cik_regs.h" |
| 33 | #include "kfd_kernel_queue.h" |
| 34 | #include "../../radeon/cik_reg.h" |
| 35 | |
| 36 | /* Size of the per-pipe EOP queue */ |
| 37 | #define CIK_HPD_EOP_BYTES_LOG2 11 |
| 38 | #define CIK_HPD_EOP_BYTES (1U << CIK_HPD_EOP_BYTES_LOG2) |
| 39 | |
| 40 | static bool is_mem_initialized; |
| 41 | |
| 42 | static int init_memory(struct device_queue_manager *dqm); |
| 43 | static int set_pasid_vmid_mapping(struct device_queue_manager *dqm, |
| 44 | unsigned int pasid, unsigned int vmid); |
| 45 | |
| 46 | static int create_compute_queue_nocpsch(struct device_queue_manager *dqm, |
| 47 | struct queue *q, |
| 48 | struct qcm_process_device *qpd); |
| 49 | static int execute_queues_cpsch(struct device_queue_manager *dqm, bool lock); |
| 50 | static int destroy_queues_cpsch(struct device_queue_manager *dqm, bool lock); |
| 51 | |
| 52 | |
| 53 | static inline unsigned int get_pipes_num(struct device_queue_manager *dqm) |
| 54 | { |
| 55 | BUG_ON(!dqm || !dqm->dev); |
| 56 | return dqm->dev->shared_resources.compute_pipe_count; |
| 57 | } |
| 58 | |
| 59 | static inline unsigned int get_first_pipe(struct device_queue_manager *dqm) |
| 60 | { |
| 61 | BUG_ON(!dqm); |
| 62 | return dqm->dev->shared_resources.first_compute_pipe; |
| 63 | } |
| 64 | |
| 65 | static inline unsigned int get_pipes_num_cpsch(void) |
| 66 | { |
| 67 | return PIPE_PER_ME_CP_SCHEDULING; |
| 68 | } |
| 69 | |
Alexey Skidanov | 52a5fdc | 2014-11-19 17:07:00 +0200 | [diff] [blame] | 70 | static inline unsigned int |
| 71 | get_sh_mem_bases_nybble_64(struct kfd_process_device *pdd) |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 72 | { |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 73 | uint32_t nybble; |
| 74 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 75 | nybble = (pdd->lds_base >> 60) & 0x0E; |
| 76 | |
| 77 | return nybble; |
| 78 | |
| 79 | } |
| 80 | |
Alexey Skidanov | 52a5fdc | 2014-11-19 17:07:00 +0200 | [diff] [blame] | 81 | static inline unsigned int get_sh_mem_bases_32(struct kfd_process_device *pdd) |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 82 | { |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 83 | unsigned int shared_base; |
| 84 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 85 | shared_base = (pdd->lds_base >> 16) & 0xFF; |
| 86 | |
| 87 | return shared_base; |
| 88 | } |
| 89 | |
| 90 | static uint32_t compute_sh_mem_bases_64bit(unsigned int top_address_nybble); |
| 91 | static void init_process_memory(struct device_queue_manager *dqm, |
| 92 | struct qcm_process_device *qpd) |
| 93 | { |
Alexey Skidanov | 52a5fdc | 2014-11-19 17:07:00 +0200 | [diff] [blame] | 94 | struct kfd_process_device *pdd; |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 95 | unsigned int temp; |
| 96 | |
| 97 | BUG_ON(!dqm || !qpd); |
| 98 | |
Alexey Skidanov | 52a5fdc | 2014-11-19 17:07:00 +0200 | [diff] [blame] | 99 | pdd = qpd_to_pdd(qpd); |
| 100 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 101 | /* check if sh_mem_config register already configured */ |
| 102 | if (qpd->sh_mem_config == 0) { |
| 103 | qpd->sh_mem_config = |
| 104 | ALIGNMENT_MODE(SH_MEM_ALIGNMENT_MODE_UNALIGNED) | |
| 105 | DEFAULT_MTYPE(MTYPE_NONCACHED) | |
| 106 | APE1_MTYPE(MTYPE_NONCACHED); |
| 107 | qpd->sh_mem_ape1_limit = 0; |
| 108 | qpd->sh_mem_ape1_base = 0; |
| 109 | } |
| 110 | |
| 111 | if (qpd->pqm->process->is_32bit_user_mode) { |
Alexey Skidanov | 52a5fdc | 2014-11-19 17:07:00 +0200 | [diff] [blame] | 112 | temp = get_sh_mem_bases_32(pdd); |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 113 | qpd->sh_mem_bases = SHARED_BASE(temp); |
| 114 | qpd->sh_mem_config |= PTR32; |
| 115 | } else { |
Alexey Skidanov | 52a5fdc | 2014-11-19 17:07:00 +0200 | [diff] [blame] | 116 | temp = get_sh_mem_bases_nybble_64(pdd); |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 117 | qpd->sh_mem_bases = compute_sh_mem_bases_64bit(temp); |
| 118 | } |
| 119 | |
| 120 | pr_debug("kfd: is32bit process: %d sh_mem_bases nybble: 0x%X and register 0x%X\n", |
| 121 | qpd->pqm->process->is_32bit_user_mode, temp, qpd->sh_mem_bases); |
| 122 | } |
| 123 | |
| 124 | static void program_sh_mem_settings(struct device_queue_manager *dqm, |
| 125 | struct qcm_process_device *qpd) |
| 126 | { |
| 127 | return kfd2kgd->program_sh_mem_settings(dqm->dev->kgd, qpd->vmid, |
| 128 | qpd->sh_mem_config, |
| 129 | qpd->sh_mem_ape1_base, |
| 130 | qpd->sh_mem_ape1_limit, |
| 131 | qpd->sh_mem_bases); |
| 132 | } |
| 133 | |
| 134 | static int allocate_vmid(struct device_queue_manager *dqm, |
| 135 | struct qcm_process_device *qpd, |
| 136 | struct queue *q) |
| 137 | { |
| 138 | int bit, allocated_vmid; |
| 139 | |
| 140 | if (dqm->vmid_bitmap == 0) |
| 141 | return -ENOMEM; |
| 142 | |
| 143 | bit = find_first_bit((unsigned long *)&dqm->vmid_bitmap, CIK_VMID_NUM); |
| 144 | clear_bit(bit, (unsigned long *)&dqm->vmid_bitmap); |
| 145 | |
| 146 | /* Kaveri kfd vmid's starts from vmid 8 */ |
| 147 | allocated_vmid = bit + KFD_VMID_START_OFFSET; |
| 148 | pr_debug("kfd: vmid allocation %d\n", allocated_vmid); |
| 149 | qpd->vmid = allocated_vmid; |
| 150 | q->properties.vmid = allocated_vmid; |
| 151 | |
| 152 | set_pasid_vmid_mapping(dqm, q->process->pasid, q->properties.vmid); |
| 153 | program_sh_mem_settings(dqm, qpd); |
| 154 | |
| 155 | return 0; |
| 156 | } |
| 157 | |
| 158 | static void deallocate_vmid(struct device_queue_manager *dqm, |
| 159 | struct qcm_process_device *qpd, |
| 160 | struct queue *q) |
| 161 | { |
| 162 | int bit = qpd->vmid - KFD_VMID_START_OFFSET; |
| 163 | |
Ben Goz | 2030664 | 2015-01-05 15:48:28 +0200 | [diff] [blame] | 164 | /* Release the vmid mapping */ |
| 165 | set_pasid_vmid_mapping(dqm, 0, qpd->vmid); |
| 166 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 167 | set_bit(bit, (unsigned long *)&dqm->vmid_bitmap); |
| 168 | qpd->vmid = 0; |
| 169 | q->properties.vmid = 0; |
| 170 | } |
| 171 | |
| 172 | static int create_queue_nocpsch(struct device_queue_manager *dqm, |
| 173 | struct queue *q, |
| 174 | struct qcm_process_device *qpd, |
| 175 | int *allocated_vmid) |
| 176 | { |
| 177 | int retval; |
| 178 | |
| 179 | BUG_ON(!dqm || !q || !qpd || !allocated_vmid); |
| 180 | |
| 181 | pr_debug("kfd: In func %s\n", __func__); |
| 182 | print_queue(q); |
| 183 | |
| 184 | mutex_lock(&dqm->lock); |
| 185 | |
Oded Gabbay | b8cbab0 | 2015-01-18 13:18:01 +0200 | [diff] [blame] | 186 | if (dqm->total_queue_count >= max_num_of_queues_per_device) { |
| 187 | pr_warn("amdkfd: Can't create new usermode queue because %d queues were already created\n", |
| 188 | dqm->total_queue_count); |
| 189 | mutex_unlock(&dqm->lock); |
| 190 | return -EPERM; |
| 191 | } |
| 192 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 193 | if (list_empty(&qpd->queues_list)) { |
| 194 | retval = allocate_vmid(dqm, qpd, q); |
| 195 | if (retval != 0) { |
| 196 | mutex_unlock(&dqm->lock); |
| 197 | return retval; |
| 198 | } |
| 199 | } |
| 200 | *allocated_vmid = qpd->vmid; |
| 201 | q->properties.vmid = qpd->vmid; |
| 202 | |
| 203 | retval = create_compute_queue_nocpsch(dqm, q, qpd); |
| 204 | |
| 205 | if (retval != 0) { |
| 206 | if (list_empty(&qpd->queues_list)) { |
| 207 | deallocate_vmid(dqm, qpd, q); |
| 208 | *allocated_vmid = 0; |
| 209 | } |
| 210 | mutex_unlock(&dqm->lock); |
| 211 | return retval; |
| 212 | } |
| 213 | |
| 214 | list_add(&q->list, &qpd->queues_list); |
| 215 | dqm->queue_count++; |
| 216 | |
Oded Gabbay | b8cbab0 | 2015-01-18 13:18:01 +0200 | [diff] [blame] | 217 | /* |
| 218 | * Unconditionally increment this counter, regardless of the queue's |
| 219 | * type or whether the queue is active. |
| 220 | */ |
| 221 | dqm->total_queue_count++; |
| 222 | pr_debug("Total of %d queues are accountable so far\n", |
| 223 | dqm->total_queue_count); |
| 224 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 225 | mutex_unlock(&dqm->lock); |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q) |
| 230 | { |
| 231 | bool set; |
| 232 | int pipe, bit; |
| 233 | |
| 234 | set = false; |
| 235 | |
| 236 | for (pipe = dqm->next_pipe_to_allocate; pipe < get_pipes_num(dqm); |
| 237 | pipe = (pipe + 1) % get_pipes_num(dqm)) { |
| 238 | if (dqm->allocated_queues[pipe] != 0) { |
| 239 | bit = find_first_bit( |
| 240 | (unsigned long *)&dqm->allocated_queues[pipe], |
| 241 | QUEUES_PER_PIPE); |
| 242 | |
| 243 | clear_bit(bit, |
| 244 | (unsigned long *)&dqm->allocated_queues[pipe]); |
| 245 | q->pipe = pipe; |
| 246 | q->queue = bit; |
| 247 | set = true; |
| 248 | break; |
| 249 | } |
| 250 | } |
| 251 | |
| 252 | if (set == false) |
| 253 | return -EBUSY; |
| 254 | |
| 255 | pr_debug("kfd: DQM %s hqd slot - pipe (%d) queue(%d)\n", |
| 256 | __func__, q->pipe, q->queue); |
| 257 | /* horizontal hqd allocation */ |
| 258 | dqm->next_pipe_to_allocate = (pipe + 1) % get_pipes_num(dqm); |
| 259 | |
| 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | static inline void deallocate_hqd(struct device_queue_manager *dqm, |
| 264 | struct queue *q) |
| 265 | { |
| 266 | set_bit(q->queue, (unsigned long *)&dqm->allocated_queues[q->pipe]); |
| 267 | } |
| 268 | |
| 269 | static int create_compute_queue_nocpsch(struct device_queue_manager *dqm, |
| 270 | struct queue *q, |
| 271 | struct qcm_process_device *qpd) |
| 272 | { |
| 273 | int retval; |
| 274 | struct mqd_manager *mqd; |
| 275 | |
| 276 | BUG_ON(!dqm || !q || !qpd); |
| 277 | |
| 278 | mqd = dqm->get_mqd_manager(dqm, KFD_MQD_TYPE_CIK_COMPUTE); |
| 279 | if (mqd == NULL) |
| 280 | return -ENOMEM; |
| 281 | |
| 282 | retval = allocate_hqd(dqm, q); |
| 283 | if (retval != 0) |
| 284 | return retval; |
| 285 | |
| 286 | retval = mqd->init_mqd(mqd, &q->mqd, &q->mqd_mem_obj, |
| 287 | &q->gart_mqd_addr, &q->properties); |
| 288 | if (retval != 0) { |
| 289 | deallocate_hqd(dqm, q); |
| 290 | return retval; |
| 291 | } |
| 292 | |
Ben Goz | 030e416 | 2015-01-04 21:46:44 +0200 | [diff] [blame] | 293 | pr_debug("kfd: loading mqd to hqd on pipe (%d) queue (%d)\n", |
| 294 | q->pipe, |
| 295 | q->queue); |
| 296 | |
| 297 | retval = mqd->load_mqd(mqd, q->mqd, q->pipe, |
Oded Gabbay | 8dfe58b | 2015-01-08 16:46:16 +0200 | [diff] [blame] | 298 | q->queue, (uint32_t __user *) q->properties.write_ptr); |
Ben Goz | 030e416 | 2015-01-04 21:46:44 +0200 | [diff] [blame] | 299 | if (retval != 0) { |
| 300 | deallocate_hqd(dqm, q); |
| 301 | mqd->uninit_mqd(mqd, q->mqd, q->mqd_mem_obj); |
| 302 | return retval; |
| 303 | } |
| 304 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | static int destroy_queue_nocpsch(struct device_queue_manager *dqm, |
| 309 | struct qcm_process_device *qpd, |
| 310 | struct queue *q) |
| 311 | { |
| 312 | int retval; |
| 313 | struct mqd_manager *mqd; |
| 314 | |
| 315 | BUG_ON(!dqm || !q || !q->mqd || !qpd); |
| 316 | |
| 317 | retval = 0; |
| 318 | |
| 319 | pr_debug("kfd: In Func %s\n", __func__); |
| 320 | |
| 321 | mutex_lock(&dqm->lock); |
| 322 | mqd = dqm->get_mqd_manager(dqm, KFD_MQD_TYPE_CIK_COMPUTE); |
| 323 | if (mqd == NULL) { |
| 324 | retval = -ENOMEM; |
| 325 | goto out; |
| 326 | } |
| 327 | |
| 328 | retval = mqd->destroy_mqd(mqd, q->mqd, |
| 329 | KFD_PREEMPT_TYPE_WAVEFRONT, |
| 330 | QUEUE_PREEMPT_DEFAULT_TIMEOUT_MS, |
| 331 | q->pipe, q->queue); |
| 332 | |
| 333 | if (retval != 0) |
| 334 | goto out; |
| 335 | |
| 336 | deallocate_hqd(dqm, q); |
| 337 | |
| 338 | mqd->uninit_mqd(mqd, q->mqd, q->mqd_mem_obj); |
| 339 | |
| 340 | list_del(&q->list); |
| 341 | if (list_empty(&qpd->queues_list)) |
| 342 | deallocate_vmid(dqm, qpd, q); |
| 343 | dqm->queue_count--; |
Oded Gabbay | b8cbab0 | 2015-01-18 13:18:01 +0200 | [diff] [blame] | 344 | |
| 345 | /* |
| 346 | * Unconditionally decrement this counter, regardless of the queue's |
| 347 | * type |
| 348 | */ |
| 349 | dqm->total_queue_count--; |
| 350 | pr_debug("Total of %d queues are accountable so far\n", |
| 351 | dqm->total_queue_count); |
| 352 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 353 | out: |
| 354 | mutex_unlock(&dqm->lock); |
| 355 | return retval; |
| 356 | } |
| 357 | |
| 358 | static int update_queue(struct device_queue_manager *dqm, struct queue *q) |
| 359 | { |
| 360 | int retval; |
| 361 | struct mqd_manager *mqd; |
Oded Gabbay | b6ffbab | 2014-12-07 22:27:24 +0200 | [diff] [blame] | 362 | bool prev_active = false; |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 363 | |
| 364 | BUG_ON(!dqm || !q || !q->mqd); |
| 365 | |
| 366 | mutex_lock(&dqm->lock); |
| 367 | mqd = dqm->get_mqd_manager(dqm, KFD_MQD_TYPE_CIK_COMPUTE); |
| 368 | if (mqd == NULL) { |
| 369 | mutex_unlock(&dqm->lock); |
| 370 | return -ENOMEM; |
| 371 | } |
| 372 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 373 | if (q->properties.is_active == true) |
Oded Gabbay | b6ffbab | 2014-12-07 22:27:24 +0200 | [diff] [blame] | 374 | prev_active = true; |
| 375 | |
| 376 | /* |
| 377 | * |
| 378 | * check active state vs. the previous state |
| 379 | * and modify counter accordingly |
| 380 | */ |
| 381 | retval = mqd->update_mqd(mqd, q->mqd, &q->properties); |
| 382 | if ((q->properties.is_active == true) && (prev_active == false)) |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 383 | dqm->queue_count++; |
Oded Gabbay | b6ffbab | 2014-12-07 22:27:24 +0200 | [diff] [blame] | 384 | else if ((q->properties.is_active == false) && (prev_active == true)) |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 385 | dqm->queue_count--; |
| 386 | |
| 387 | if (sched_policy != KFD_SCHED_POLICY_NO_HWS) |
| 388 | retval = execute_queues_cpsch(dqm, false); |
| 389 | |
| 390 | mutex_unlock(&dqm->lock); |
| 391 | return retval; |
| 392 | } |
| 393 | |
| 394 | static struct mqd_manager *get_mqd_manager_nocpsch( |
| 395 | struct device_queue_manager *dqm, enum KFD_MQD_TYPE type) |
| 396 | { |
| 397 | struct mqd_manager *mqd; |
| 398 | |
| 399 | BUG_ON(!dqm || type >= KFD_MQD_TYPE_MAX); |
| 400 | |
| 401 | pr_debug("kfd: In func %s mqd type %d\n", __func__, type); |
| 402 | |
| 403 | mqd = dqm->mqds[type]; |
| 404 | if (!mqd) { |
| 405 | mqd = mqd_manager_init(type, dqm->dev); |
| 406 | if (mqd == NULL) |
| 407 | pr_err("kfd: mqd manager is NULL"); |
| 408 | dqm->mqds[type] = mqd; |
| 409 | } |
| 410 | |
| 411 | return mqd; |
| 412 | } |
| 413 | |
| 414 | static int register_process_nocpsch(struct device_queue_manager *dqm, |
| 415 | struct qcm_process_device *qpd) |
| 416 | { |
| 417 | struct device_process_node *n; |
| 418 | |
| 419 | BUG_ON(!dqm || !qpd); |
| 420 | |
| 421 | pr_debug("kfd: In func %s\n", __func__); |
| 422 | |
| 423 | n = kzalloc(sizeof(struct device_process_node), GFP_KERNEL); |
| 424 | if (!n) |
| 425 | return -ENOMEM; |
| 426 | |
| 427 | n->qpd = qpd; |
| 428 | |
| 429 | mutex_lock(&dqm->lock); |
| 430 | list_add(&n->list, &dqm->queues); |
| 431 | |
| 432 | init_process_memory(dqm, qpd); |
| 433 | dqm->processes_count++; |
| 434 | |
| 435 | mutex_unlock(&dqm->lock); |
| 436 | |
| 437 | return 0; |
| 438 | } |
| 439 | |
| 440 | static int unregister_process_nocpsch(struct device_queue_manager *dqm, |
| 441 | struct qcm_process_device *qpd) |
| 442 | { |
| 443 | int retval; |
| 444 | struct device_process_node *cur, *next; |
| 445 | |
| 446 | BUG_ON(!dqm || !qpd); |
| 447 | |
| 448 | BUG_ON(!list_empty(&qpd->queues_list)); |
| 449 | |
| 450 | pr_debug("kfd: In func %s\n", __func__); |
| 451 | |
| 452 | retval = 0; |
| 453 | mutex_lock(&dqm->lock); |
| 454 | |
| 455 | list_for_each_entry_safe(cur, next, &dqm->queues, list) { |
| 456 | if (qpd == cur->qpd) { |
| 457 | list_del(&cur->list); |
Jay Cornwall | f5d896b | 2014-11-20 11:52:16 -0600 | [diff] [blame] | 458 | kfree(cur); |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 459 | dqm->processes_count--; |
| 460 | goto out; |
| 461 | } |
| 462 | } |
| 463 | /* qpd not found in dqm list */ |
| 464 | retval = 1; |
| 465 | out: |
| 466 | mutex_unlock(&dqm->lock); |
| 467 | return retval; |
| 468 | } |
| 469 | |
| 470 | static int |
| 471 | set_pasid_vmid_mapping(struct device_queue_manager *dqm, unsigned int pasid, |
| 472 | unsigned int vmid) |
| 473 | { |
| 474 | uint32_t pasid_mapping; |
| 475 | |
| 476 | pasid_mapping = (pasid == 0) ? 0 : (uint32_t)pasid | |
| 477 | ATC_VMID_PASID_MAPPING_VALID; |
| 478 | return kfd2kgd->set_pasid_vmid_mapping(dqm->dev->kgd, pasid_mapping, |
| 479 | vmid); |
| 480 | } |
| 481 | |
| 482 | static uint32_t compute_sh_mem_bases_64bit(unsigned int top_address_nybble) |
| 483 | { |
| 484 | /* In 64-bit mode, we can only control the top 3 bits of the LDS, |
| 485 | * scratch and GPUVM apertures. |
| 486 | * The hardware fills in the remaining 59 bits according to the |
| 487 | * following pattern: |
| 488 | * LDS: X0000000'00000000 - X0000001'00000000 (4GB) |
| 489 | * Scratch: X0000001'00000000 - X0000002'00000000 (4GB) |
| 490 | * GPUVM: Y0010000'00000000 - Y0020000'00000000 (1TB) |
| 491 | * |
| 492 | * (where X/Y is the configurable nybble with the low-bit 0) |
| 493 | * |
| 494 | * LDS and scratch will have the same top nybble programmed in the |
| 495 | * top 3 bits of SH_MEM_BASES.PRIVATE_BASE. |
| 496 | * GPUVM can have a different top nybble programmed in the |
| 497 | * top 3 bits of SH_MEM_BASES.SHARED_BASE. |
| 498 | * We don't bother to support different top nybbles |
| 499 | * for LDS/Scratch and GPUVM. |
| 500 | */ |
| 501 | |
| 502 | BUG_ON((top_address_nybble & 1) || top_address_nybble > 0xE || |
| 503 | top_address_nybble == 0); |
| 504 | |
| 505 | return PRIVATE_BASE(top_address_nybble << 12) | |
| 506 | SHARED_BASE(top_address_nybble << 12); |
| 507 | } |
| 508 | |
| 509 | static int init_memory(struct device_queue_manager *dqm) |
| 510 | { |
| 511 | int i, retval; |
| 512 | |
| 513 | for (i = 8; i < 16; i++) |
| 514 | set_pasid_vmid_mapping(dqm, 0, i); |
| 515 | |
| 516 | retval = kfd2kgd->init_memory(dqm->dev->kgd); |
| 517 | if (retval == 0) |
| 518 | is_mem_initialized = true; |
| 519 | return retval; |
| 520 | } |
| 521 | |
| 522 | |
| 523 | static int init_pipelines(struct device_queue_manager *dqm, |
| 524 | unsigned int pipes_num, unsigned int first_pipe) |
| 525 | { |
| 526 | void *hpdptr; |
| 527 | struct mqd_manager *mqd; |
| 528 | unsigned int i, err, inx; |
| 529 | uint64_t pipe_hpd_addr; |
| 530 | |
| 531 | BUG_ON(!dqm || !dqm->dev); |
| 532 | |
| 533 | pr_debug("kfd: In func %s\n", __func__); |
| 534 | |
| 535 | /* |
| 536 | * Allocate memory for the HPDs. This is hardware-owned per-pipe data. |
| 537 | * The driver never accesses this memory after zeroing it. |
| 538 | * It doesn't even have to be saved/restored on suspend/resume |
| 539 | * because it contains no data when there are no active queues. |
| 540 | */ |
| 541 | |
| 542 | err = kfd2kgd->allocate_mem(dqm->dev->kgd, |
| 543 | CIK_HPD_EOP_BYTES * pipes_num, |
| 544 | PAGE_SIZE, |
| 545 | KFD_MEMPOOL_SYSTEM_WRITECOMBINE, |
| 546 | (struct kgd_mem **) &dqm->pipeline_mem); |
| 547 | |
| 548 | if (err) { |
| 549 | pr_err("kfd: error allocate vidmem num pipes: %d\n", |
| 550 | pipes_num); |
| 551 | return -ENOMEM; |
| 552 | } |
| 553 | |
| 554 | hpdptr = dqm->pipeline_mem->cpu_ptr; |
| 555 | dqm->pipelines_addr = dqm->pipeline_mem->gpu_addr; |
| 556 | |
| 557 | memset(hpdptr, 0, CIK_HPD_EOP_BYTES * pipes_num); |
| 558 | |
| 559 | mqd = dqm->get_mqd_manager(dqm, KFD_MQD_TYPE_CIK_COMPUTE); |
| 560 | if (mqd == NULL) { |
| 561 | kfd2kgd->free_mem(dqm->dev->kgd, |
| 562 | (struct kgd_mem *) dqm->pipeline_mem); |
| 563 | return -ENOMEM; |
| 564 | } |
| 565 | |
| 566 | for (i = 0; i < pipes_num; i++) { |
| 567 | inx = i + first_pipe; |
Oded Gabbay | 749042b | 2015-01-22 11:03:42 +0200 | [diff] [blame] | 568 | /* |
| 569 | * HPD buffer on GTT is allocated by amdkfd, no need to waste |
| 570 | * space in GTT for pipelines we don't initialize |
| 571 | */ |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 572 | pipe_hpd_addr = dqm->pipelines_addr + i * CIK_HPD_EOP_BYTES; |
| 573 | pr_debug("kfd: pipeline address %llX\n", pipe_hpd_addr); |
| 574 | /* = log2(bytes/4)-1 */ |
Oded Gabbay | 749042b | 2015-01-22 11:03:42 +0200 | [diff] [blame] | 575 | kfd2kgd->init_pipeline(dqm->dev->kgd, inx, |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 576 | CIK_HPD_EOP_BYTES_LOG2 - 3, pipe_hpd_addr); |
| 577 | } |
| 578 | |
| 579 | return 0; |
| 580 | } |
| 581 | |
| 582 | |
| 583 | static int init_scheduler(struct device_queue_manager *dqm) |
| 584 | { |
| 585 | int retval; |
| 586 | |
| 587 | BUG_ON(!dqm); |
| 588 | |
| 589 | pr_debug("kfd: In %s\n", __func__); |
| 590 | |
Oded Gabbay | 9fa843e | 2015-01-22 12:50:37 +0200 | [diff] [blame] | 591 | retval = init_pipelines(dqm, get_pipes_num(dqm), get_first_pipe(dqm)); |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 592 | if (retval != 0) |
| 593 | return retval; |
| 594 | |
| 595 | retval = init_memory(dqm); |
| 596 | |
| 597 | return retval; |
| 598 | } |
| 599 | |
| 600 | static int initialize_nocpsch(struct device_queue_manager *dqm) |
| 601 | { |
| 602 | int i; |
| 603 | |
| 604 | BUG_ON(!dqm); |
| 605 | |
| 606 | pr_debug("kfd: In func %s num of pipes: %d\n", |
| 607 | __func__, get_pipes_num(dqm)); |
| 608 | |
| 609 | mutex_init(&dqm->lock); |
| 610 | INIT_LIST_HEAD(&dqm->queues); |
| 611 | dqm->queue_count = dqm->next_pipe_to_allocate = 0; |
| 612 | dqm->allocated_queues = kcalloc(get_pipes_num(dqm), |
| 613 | sizeof(unsigned int), GFP_KERNEL); |
| 614 | if (!dqm->allocated_queues) { |
| 615 | mutex_destroy(&dqm->lock); |
| 616 | return -ENOMEM; |
| 617 | } |
| 618 | |
| 619 | for (i = 0; i < get_pipes_num(dqm); i++) |
| 620 | dqm->allocated_queues[i] = (1 << QUEUES_PER_PIPE) - 1; |
| 621 | |
| 622 | dqm->vmid_bitmap = (1 << VMID_PER_DEVICE) - 1; |
| 623 | |
| 624 | init_scheduler(dqm); |
| 625 | return 0; |
| 626 | } |
| 627 | |
| 628 | static void uninitialize_nocpsch(struct device_queue_manager *dqm) |
| 629 | { |
Oded Gabbay | 6f9d54f | 2014-11-25 15:16:38 +0200 | [diff] [blame] | 630 | int i; |
| 631 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 632 | BUG_ON(!dqm); |
| 633 | |
| 634 | BUG_ON(dqm->queue_count > 0 || dqm->processes_count > 0); |
| 635 | |
| 636 | kfree(dqm->allocated_queues); |
Oded Gabbay | 6f9d54f | 2014-11-25 15:16:38 +0200 | [diff] [blame] | 637 | for (i = 0 ; i < KFD_MQD_TYPE_MAX ; i++) |
| 638 | kfree(dqm->mqds[i]); |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 639 | mutex_destroy(&dqm->lock); |
| 640 | kfd2kgd->free_mem(dqm->dev->kgd, |
| 641 | (struct kgd_mem *) dqm->pipeline_mem); |
| 642 | } |
| 643 | |
| 644 | static int start_nocpsch(struct device_queue_manager *dqm) |
| 645 | { |
| 646 | return 0; |
| 647 | } |
| 648 | |
| 649 | static int stop_nocpsch(struct device_queue_manager *dqm) |
| 650 | { |
| 651 | return 0; |
| 652 | } |
| 653 | |
| 654 | /* |
| 655 | * Device Queue Manager implementation for cp scheduler |
| 656 | */ |
| 657 | |
| 658 | static int set_sched_resources(struct device_queue_manager *dqm) |
| 659 | { |
| 660 | struct scheduling_resources res; |
| 661 | unsigned int queue_num, queue_mask; |
| 662 | |
| 663 | BUG_ON(!dqm); |
| 664 | |
| 665 | pr_debug("kfd: In func %s\n", __func__); |
| 666 | |
| 667 | queue_num = get_pipes_num_cpsch() * QUEUES_PER_PIPE; |
| 668 | queue_mask = (1 << queue_num) - 1; |
| 669 | res.vmid_mask = (1 << VMID_PER_DEVICE) - 1; |
| 670 | res.vmid_mask <<= KFD_VMID_START_OFFSET; |
| 671 | res.queue_mask = queue_mask << (get_first_pipe(dqm) * QUEUES_PER_PIPE); |
| 672 | res.gws_mask = res.oac_mask = res.gds_heap_base = |
| 673 | res.gds_heap_size = 0; |
| 674 | |
| 675 | pr_debug("kfd: scheduling resources:\n" |
| 676 | " vmid mask: 0x%8X\n" |
| 677 | " queue mask: 0x%8llX\n", |
| 678 | res.vmid_mask, res.queue_mask); |
| 679 | |
| 680 | return pm_send_set_resources(&dqm->packets, &res); |
| 681 | } |
| 682 | |
| 683 | static int initialize_cpsch(struct device_queue_manager *dqm) |
| 684 | { |
| 685 | int retval; |
| 686 | |
| 687 | BUG_ON(!dqm); |
| 688 | |
| 689 | pr_debug("kfd: In func %s num of pipes: %d\n", |
| 690 | __func__, get_pipes_num_cpsch()); |
| 691 | |
| 692 | mutex_init(&dqm->lock); |
| 693 | INIT_LIST_HEAD(&dqm->queues); |
| 694 | dqm->queue_count = dqm->processes_count = 0; |
| 695 | dqm->active_runlist = false; |
| 696 | retval = init_pipelines(dqm, get_pipes_num(dqm), 0); |
| 697 | if (retval != 0) |
| 698 | goto fail_init_pipelines; |
| 699 | |
| 700 | return 0; |
| 701 | |
| 702 | fail_init_pipelines: |
| 703 | mutex_destroy(&dqm->lock); |
| 704 | return retval; |
| 705 | } |
| 706 | |
| 707 | static int start_cpsch(struct device_queue_manager *dqm) |
| 708 | { |
| 709 | struct device_process_node *node; |
| 710 | int retval; |
| 711 | |
| 712 | BUG_ON(!dqm); |
| 713 | |
| 714 | retval = 0; |
| 715 | |
| 716 | retval = pm_init(&dqm->packets, dqm); |
| 717 | if (retval != 0) |
| 718 | goto fail_packet_manager_init; |
| 719 | |
| 720 | retval = set_sched_resources(dqm); |
| 721 | if (retval != 0) |
| 722 | goto fail_set_sched_resources; |
| 723 | |
| 724 | pr_debug("kfd: allocating fence memory\n"); |
| 725 | |
| 726 | /* allocate fence memory on the gart */ |
| 727 | retval = kfd2kgd->allocate_mem(dqm->dev->kgd, |
| 728 | sizeof(*dqm->fence_addr), |
| 729 | 32, |
| 730 | KFD_MEMPOOL_SYSTEM_WRITECOMBINE, |
| 731 | (struct kgd_mem **) &dqm->fence_mem); |
| 732 | |
| 733 | if (retval != 0) |
| 734 | goto fail_allocate_vidmem; |
| 735 | |
| 736 | dqm->fence_addr = dqm->fence_mem->cpu_ptr; |
| 737 | dqm->fence_gpu_addr = dqm->fence_mem->gpu_addr; |
| 738 | |
| 739 | list_for_each_entry(node, &dqm->queues, list) |
| 740 | if (node->qpd->pqm->process && dqm->dev) |
| 741 | kfd_bind_process_to_device(dqm->dev, |
| 742 | node->qpd->pqm->process); |
| 743 | |
| 744 | execute_queues_cpsch(dqm, true); |
| 745 | |
| 746 | return 0; |
| 747 | fail_allocate_vidmem: |
| 748 | fail_set_sched_resources: |
| 749 | pm_uninit(&dqm->packets); |
| 750 | fail_packet_manager_init: |
| 751 | return retval; |
| 752 | } |
| 753 | |
| 754 | static int stop_cpsch(struct device_queue_manager *dqm) |
| 755 | { |
| 756 | struct device_process_node *node; |
| 757 | struct kfd_process_device *pdd; |
| 758 | |
| 759 | BUG_ON(!dqm); |
| 760 | |
| 761 | destroy_queues_cpsch(dqm, true); |
| 762 | |
| 763 | list_for_each_entry(node, &dqm->queues, list) { |
Alexey Skidanov | 52a5fdc | 2014-11-19 17:07:00 +0200 | [diff] [blame] | 764 | pdd = qpd_to_pdd(node->qpd); |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 765 | pdd->bound = false; |
| 766 | } |
| 767 | kfd2kgd->free_mem(dqm->dev->kgd, |
| 768 | (struct kgd_mem *) dqm->fence_mem); |
| 769 | pm_uninit(&dqm->packets); |
| 770 | |
| 771 | return 0; |
| 772 | } |
| 773 | |
| 774 | static int create_kernel_queue_cpsch(struct device_queue_manager *dqm, |
| 775 | struct kernel_queue *kq, |
| 776 | struct qcm_process_device *qpd) |
| 777 | { |
| 778 | BUG_ON(!dqm || !kq || !qpd); |
| 779 | |
| 780 | pr_debug("kfd: In func %s\n", __func__); |
| 781 | |
| 782 | mutex_lock(&dqm->lock); |
Oded Gabbay | b8cbab0 | 2015-01-18 13:18:01 +0200 | [diff] [blame] | 783 | if (dqm->total_queue_count >= max_num_of_queues_per_device) { |
| 784 | pr_warn("amdkfd: Can't create new kernel queue because %d queues were already created\n", |
| 785 | dqm->total_queue_count); |
| 786 | mutex_unlock(&dqm->lock); |
| 787 | return -EPERM; |
| 788 | } |
| 789 | |
| 790 | /* |
| 791 | * Unconditionally increment this counter, regardless of the queue's |
| 792 | * type or whether the queue is active. |
| 793 | */ |
| 794 | dqm->total_queue_count++; |
| 795 | pr_debug("Total of %d queues are accountable so far\n", |
| 796 | dqm->total_queue_count); |
| 797 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 798 | list_add(&kq->list, &qpd->priv_queue_list); |
| 799 | dqm->queue_count++; |
| 800 | qpd->is_debug = true; |
| 801 | execute_queues_cpsch(dqm, false); |
| 802 | mutex_unlock(&dqm->lock); |
| 803 | |
| 804 | return 0; |
| 805 | } |
| 806 | |
| 807 | static void destroy_kernel_queue_cpsch(struct device_queue_manager *dqm, |
| 808 | struct kernel_queue *kq, |
| 809 | struct qcm_process_device *qpd) |
| 810 | { |
| 811 | BUG_ON(!dqm || !kq); |
| 812 | |
| 813 | pr_debug("kfd: In %s\n", __func__); |
| 814 | |
| 815 | mutex_lock(&dqm->lock); |
| 816 | destroy_queues_cpsch(dqm, false); |
| 817 | list_del(&kq->list); |
| 818 | dqm->queue_count--; |
| 819 | qpd->is_debug = false; |
| 820 | execute_queues_cpsch(dqm, false); |
Oded Gabbay | b8cbab0 | 2015-01-18 13:18:01 +0200 | [diff] [blame] | 821 | /* |
| 822 | * Unconditionally decrement this counter, regardless of the queue's |
| 823 | * type. |
| 824 | */ |
Oded Gabbay | 8b58f26 | 2015-01-29 10:32:25 +0200 | [diff] [blame] | 825 | dqm->total_queue_count--; |
Oded Gabbay | b8cbab0 | 2015-01-18 13:18:01 +0200 | [diff] [blame] | 826 | pr_debug("Total of %d queues are accountable so far\n", |
| 827 | dqm->total_queue_count); |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 828 | mutex_unlock(&dqm->lock); |
| 829 | } |
| 830 | |
| 831 | static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q, |
| 832 | struct qcm_process_device *qpd, int *allocate_vmid) |
| 833 | { |
| 834 | int retval; |
| 835 | struct mqd_manager *mqd; |
| 836 | |
| 837 | BUG_ON(!dqm || !q || !qpd); |
| 838 | |
| 839 | retval = 0; |
| 840 | |
| 841 | if (allocate_vmid) |
| 842 | *allocate_vmid = 0; |
| 843 | |
| 844 | mutex_lock(&dqm->lock); |
| 845 | |
Oded Gabbay | b8cbab0 | 2015-01-18 13:18:01 +0200 | [diff] [blame] | 846 | if (dqm->total_queue_count >= max_num_of_queues_per_device) { |
| 847 | pr_warn("amdkfd: Can't create new usermode queue because %d queues were already created\n", |
| 848 | dqm->total_queue_count); |
| 849 | retval = -EPERM; |
| 850 | goto out; |
| 851 | } |
| 852 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 853 | mqd = dqm->get_mqd_manager(dqm, KFD_MQD_TYPE_CIK_CP); |
| 854 | if (mqd == NULL) { |
| 855 | mutex_unlock(&dqm->lock); |
| 856 | return -ENOMEM; |
| 857 | } |
| 858 | |
| 859 | retval = mqd->init_mqd(mqd, &q->mqd, &q->mqd_mem_obj, |
| 860 | &q->gart_mqd_addr, &q->properties); |
| 861 | if (retval != 0) |
| 862 | goto out; |
| 863 | |
| 864 | list_add(&q->list, &qpd->queues_list); |
| 865 | if (q->properties.is_active) { |
| 866 | dqm->queue_count++; |
| 867 | retval = execute_queues_cpsch(dqm, false); |
| 868 | } |
| 869 | |
Oded Gabbay | b8cbab0 | 2015-01-18 13:18:01 +0200 | [diff] [blame] | 870 | /* |
| 871 | * Unconditionally increment this counter, regardless of the queue's |
| 872 | * type or whether the queue is active. |
| 873 | */ |
| 874 | dqm->total_queue_count++; |
| 875 | |
| 876 | pr_debug("Total of %d queues are accountable so far\n", |
| 877 | dqm->total_queue_count); |
| 878 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 879 | out: |
| 880 | mutex_unlock(&dqm->lock); |
| 881 | return retval; |
| 882 | } |
| 883 | |
Oded Gabbay | d80d19b | 2014-11-20 15:54:05 +0200 | [diff] [blame] | 884 | static int fence_wait_timeout(unsigned int *fence_addr, |
| 885 | unsigned int fence_value, |
| 886 | unsigned long timeout) |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 887 | { |
| 888 | BUG_ON(!fence_addr); |
| 889 | timeout += jiffies; |
| 890 | |
| 891 | while (*fence_addr != fence_value) { |
| 892 | if (time_after(jiffies, timeout)) { |
| 893 | pr_err("kfd: qcm fence wait loop timeout expired\n"); |
| 894 | return -ETIME; |
| 895 | } |
| 896 | cpu_relax(); |
| 897 | } |
| 898 | |
| 899 | return 0; |
| 900 | } |
| 901 | |
| 902 | static int destroy_queues_cpsch(struct device_queue_manager *dqm, bool lock) |
| 903 | { |
| 904 | int retval; |
| 905 | |
| 906 | BUG_ON(!dqm); |
| 907 | |
| 908 | retval = 0; |
| 909 | |
| 910 | if (lock) |
| 911 | mutex_lock(&dqm->lock); |
| 912 | if (dqm->active_runlist == false) |
| 913 | goto out; |
| 914 | retval = pm_send_unmap_queue(&dqm->packets, KFD_QUEUE_TYPE_COMPUTE, |
| 915 | KFD_PREEMPT_TYPE_FILTER_ALL_QUEUES, 0, false, 0); |
| 916 | if (retval != 0) |
| 917 | goto out; |
| 918 | |
| 919 | *dqm->fence_addr = KFD_FENCE_INIT; |
| 920 | pm_send_query_status(&dqm->packets, dqm->fence_gpu_addr, |
| 921 | KFD_FENCE_COMPLETED); |
| 922 | /* should be timed out */ |
| 923 | fence_wait_timeout(dqm->fence_addr, KFD_FENCE_COMPLETED, |
| 924 | QUEUE_PREEMPT_DEFAULT_TIMEOUT_MS); |
| 925 | pm_release_ib(&dqm->packets); |
| 926 | dqm->active_runlist = false; |
| 927 | |
| 928 | out: |
| 929 | if (lock) |
| 930 | mutex_unlock(&dqm->lock); |
| 931 | return retval; |
| 932 | } |
| 933 | |
| 934 | static int execute_queues_cpsch(struct device_queue_manager *dqm, bool lock) |
| 935 | { |
| 936 | int retval; |
| 937 | |
| 938 | BUG_ON(!dqm); |
| 939 | |
| 940 | if (lock) |
| 941 | mutex_lock(&dqm->lock); |
| 942 | |
| 943 | retval = destroy_queues_cpsch(dqm, false); |
| 944 | if (retval != 0) { |
| 945 | pr_err("kfd: the cp might be in an unrecoverable state due to an unsuccessful queues preemption"); |
| 946 | goto out; |
| 947 | } |
| 948 | |
| 949 | if (dqm->queue_count <= 0 || dqm->processes_count <= 0) { |
| 950 | retval = 0; |
| 951 | goto out; |
| 952 | } |
| 953 | |
| 954 | if (dqm->active_runlist) { |
| 955 | retval = 0; |
| 956 | goto out; |
| 957 | } |
| 958 | |
| 959 | retval = pm_send_runlist(&dqm->packets, &dqm->queues); |
| 960 | if (retval != 0) { |
| 961 | pr_err("kfd: failed to execute runlist"); |
| 962 | goto out; |
| 963 | } |
| 964 | dqm->active_runlist = true; |
| 965 | |
| 966 | out: |
| 967 | if (lock) |
| 968 | mutex_unlock(&dqm->lock); |
| 969 | return retval; |
| 970 | } |
| 971 | |
| 972 | static int destroy_queue_cpsch(struct device_queue_manager *dqm, |
| 973 | struct qcm_process_device *qpd, |
| 974 | struct queue *q) |
| 975 | { |
| 976 | int retval; |
| 977 | struct mqd_manager *mqd; |
| 978 | |
| 979 | BUG_ON(!dqm || !qpd || !q); |
| 980 | |
| 981 | retval = 0; |
| 982 | |
| 983 | /* remove queue from list to prevent rescheduling after preemption */ |
| 984 | mutex_lock(&dqm->lock); |
| 985 | |
| 986 | mqd = dqm->get_mqd_manager(dqm, KFD_MQD_TYPE_CIK_CP); |
| 987 | if (!mqd) { |
| 988 | retval = -ENOMEM; |
| 989 | goto failed; |
| 990 | } |
| 991 | |
| 992 | list_del(&q->list); |
| 993 | dqm->queue_count--; |
| 994 | |
| 995 | execute_queues_cpsch(dqm, false); |
| 996 | |
| 997 | mqd->uninit_mqd(mqd, q->mqd, q->mqd_mem_obj); |
| 998 | |
Oded Gabbay | b8cbab0 | 2015-01-18 13:18:01 +0200 | [diff] [blame] | 999 | /* |
| 1000 | * Unconditionally decrement this counter, regardless of the queue's |
| 1001 | * type |
| 1002 | */ |
| 1003 | dqm->total_queue_count--; |
| 1004 | pr_debug("Total of %d queues are accountable so far\n", |
| 1005 | dqm->total_queue_count); |
| 1006 | |
Ben Goz | 64c7f8c | 2014-07-17 01:27:00 +0300 | [diff] [blame] | 1007 | mutex_unlock(&dqm->lock); |
| 1008 | |
| 1009 | return 0; |
| 1010 | |
| 1011 | failed: |
| 1012 | mutex_unlock(&dqm->lock); |
| 1013 | return retval; |
| 1014 | } |
| 1015 | |
| 1016 | /* |
| 1017 | * Low bits must be 0000/FFFF as required by HW, high bits must be 0 to |
| 1018 | * stay in user mode. |
| 1019 | */ |
| 1020 | #define APE1_FIXED_BITS_MASK 0xFFFF80000000FFFFULL |
| 1021 | /* APE1 limit is inclusive and 64K aligned. */ |
| 1022 | #define APE1_LIMIT_ALIGNMENT 0xFFFF |
| 1023 | |
| 1024 | static bool set_cache_memory_policy(struct device_queue_manager *dqm, |
| 1025 | struct qcm_process_device *qpd, |
| 1026 | enum cache_policy default_policy, |
| 1027 | enum cache_policy alternate_policy, |
| 1028 | void __user *alternate_aperture_base, |
| 1029 | uint64_t alternate_aperture_size) |
| 1030 | { |
| 1031 | uint32_t default_mtype; |
| 1032 | uint32_t ape1_mtype; |
| 1033 | |
| 1034 | pr_debug("kfd: In func %s\n", __func__); |
| 1035 | |
| 1036 | mutex_lock(&dqm->lock); |
| 1037 | |
| 1038 | if (alternate_aperture_size == 0) { |
| 1039 | /* base > limit disables APE1 */ |
| 1040 | qpd->sh_mem_ape1_base = 1; |
| 1041 | qpd->sh_mem_ape1_limit = 0; |
| 1042 | } else { |
| 1043 | /* |
| 1044 | * In FSA64, APE1_Base[63:0] = { 16{SH_MEM_APE1_BASE[31]}, |
| 1045 | * SH_MEM_APE1_BASE[31:0], 0x0000 } |
| 1046 | * APE1_Limit[63:0] = { 16{SH_MEM_APE1_LIMIT[31]}, |
| 1047 | * SH_MEM_APE1_LIMIT[31:0], 0xFFFF } |
| 1048 | * Verify that the base and size parameters can be |
| 1049 | * represented in this format and convert them. |
| 1050 | * Additionally restrict APE1 to user-mode addresses. |
| 1051 | */ |
| 1052 | |
| 1053 | uint64_t base = (uintptr_t)alternate_aperture_base; |
| 1054 | uint64_t limit = base + alternate_aperture_size - 1; |
| 1055 | |
| 1056 | if (limit <= base) |
| 1057 | goto out; |
| 1058 | |
| 1059 | if ((base & APE1_FIXED_BITS_MASK) != 0) |
| 1060 | goto out; |
| 1061 | |
| 1062 | if ((limit & APE1_FIXED_BITS_MASK) != APE1_LIMIT_ALIGNMENT) |
| 1063 | goto out; |
| 1064 | |
| 1065 | qpd->sh_mem_ape1_base = base >> 16; |
| 1066 | qpd->sh_mem_ape1_limit = limit >> 16; |
| 1067 | } |
| 1068 | |
| 1069 | default_mtype = (default_policy == cache_policy_coherent) ? |
| 1070 | MTYPE_NONCACHED : |
| 1071 | MTYPE_CACHED; |
| 1072 | |
| 1073 | ape1_mtype = (alternate_policy == cache_policy_coherent) ? |
| 1074 | MTYPE_NONCACHED : |
| 1075 | MTYPE_CACHED; |
| 1076 | |
| 1077 | qpd->sh_mem_config = (qpd->sh_mem_config & PTR32) |
| 1078 | | ALIGNMENT_MODE(SH_MEM_ALIGNMENT_MODE_UNALIGNED) |
| 1079 | | DEFAULT_MTYPE(default_mtype) |
| 1080 | | APE1_MTYPE(ape1_mtype); |
| 1081 | |
| 1082 | if ((sched_policy == KFD_SCHED_POLICY_NO_HWS) && (qpd->vmid != 0)) |
| 1083 | program_sh_mem_settings(dqm, qpd); |
| 1084 | |
| 1085 | pr_debug("kfd: sh_mem_config: 0x%x, ape1_base: 0x%x, ape1_limit: 0x%x\n", |
| 1086 | qpd->sh_mem_config, qpd->sh_mem_ape1_base, |
| 1087 | qpd->sh_mem_ape1_limit); |
| 1088 | |
| 1089 | mutex_unlock(&dqm->lock); |
| 1090 | return true; |
| 1091 | |
| 1092 | out: |
| 1093 | mutex_unlock(&dqm->lock); |
| 1094 | return false; |
| 1095 | } |
| 1096 | |
| 1097 | struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev) |
| 1098 | { |
| 1099 | struct device_queue_manager *dqm; |
| 1100 | |
| 1101 | BUG_ON(!dev); |
| 1102 | |
| 1103 | dqm = kzalloc(sizeof(struct device_queue_manager), GFP_KERNEL); |
| 1104 | if (!dqm) |
| 1105 | return NULL; |
| 1106 | |
| 1107 | dqm->dev = dev; |
| 1108 | switch (sched_policy) { |
| 1109 | case KFD_SCHED_POLICY_HWS: |
| 1110 | case KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION: |
| 1111 | /* initialize dqm for cp scheduling */ |
| 1112 | dqm->create_queue = create_queue_cpsch; |
| 1113 | dqm->initialize = initialize_cpsch; |
| 1114 | dqm->start = start_cpsch; |
| 1115 | dqm->stop = stop_cpsch; |
| 1116 | dqm->destroy_queue = destroy_queue_cpsch; |
| 1117 | dqm->update_queue = update_queue; |
| 1118 | dqm->get_mqd_manager = get_mqd_manager_nocpsch; |
| 1119 | dqm->register_process = register_process_nocpsch; |
| 1120 | dqm->unregister_process = unregister_process_nocpsch; |
| 1121 | dqm->uninitialize = uninitialize_nocpsch; |
| 1122 | dqm->create_kernel_queue = create_kernel_queue_cpsch; |
| 1123 | dqm->destroy_kernel_queue = destroy_kernel_queue_cpsch; |
| 1124 | dqm->set_cache_memory_policy = set_cache_memory_policy; |
| 1125 | break; |
| 1126 | case KFD_SCHED_POLICY_NO_HWS: |
| 1127 | /* initialize dqm for no cp scheduling */ |
| 1128 | dqm->start = start_nocpsch; |
| 1129 | dqm->stop = stop_nocpsch; |
| 1130 | dqm->create_queue = create_queue_nocpsch; |
| 1131 | dqm->destroy_queue = destroy_queue_nocpsch; |
| 1132 | dqm->update_queue = update_queue; |
| 1133 | dqm->get_mqd_manager = get_mqd_manager_nocpsch; |
| 1134 | dqm->register_process = register_process_nocpsch; |
| 1135 | dqm->unregister_process = unregister_process_nocpsch; |
| 1136 | dqm->initialize = initialize_nocpsch; |
| 1137 | dqm->uninitialize = uninitialize_nocpsch; |
| 1138 | dqm->set_cache_memory_policy = set_cache_memory_policy; |
| 1139 | break; |
| 1140 | default: |
| 1141 | BUG(); |
| 1142 | break; |
| 1143 | } |
| 1144 | |
| 1145 | if (dqm->initialize(dqm) != 0) { |
| 1146 | kfree(dqm); |
| 1147 | return NULL; |
| 1148 | } |
| 1149 | |
| 1150 | return dqm; |
| 1151 | } |
| 1152 | |
| 1153 | void device_queue_manager_uninit(struct device_queue_manager *dqm) |
| 1154 | { |
| 1155 | BUG_ON(!dqm); |
| 1156 | |
| 1157 | dqm->uninitialize(dqm); |
| 1158 | kfree(dqm); |
| 1159 | } |
| 1160 | |