drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c

   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 #include <linux/module.h>
  24 #include <linux/fdtable.h>
  25 #include <linux/uaccess.h>
  26 #include <linux/firmware.h>
  27 #include <drm/drmP.h>
  28 #include "amdgpu.h"
  29 #include "amdgpu_amdkfd.h"
  30 #include "amdgpu_ucode.h"
  31 #include "gfx_v8_0.h"
  32 #include "gca/gfx_8_0_sh_mask.h"
  33 #include "gca/gfx_8_0_d.h"
  34 #include "gca/gfx_8_0_enum.h"
  35 #include "oss/oss_3_0_sh_mask.h"
  36 #include "oss/oss_3_0_d.h"
  37 #include "gmc/gmc_8_1_sh_mask.h"
  38 #include "gmc/gmc_8_1_d.h"
  39 #include "vi_structs.h"
  40 #include "vid.h"
  41
  42 enum hqd_dequeue_request_type {
  43         NO_ACTION = 0,
  44         DRAIN_PIPE,
  45         RESET_WAVES
  46 };
  47
  48 struct vi_sdma_mqd;
  49
  50 /*
  51  * Register access functions
  52  */
  53
  54 static void kgd_program_sh_mem_settings(struct kgd_dev *kgd, uint32_t vmid,
  55                 uint32_t sh_mem_config,
  56                 uint32_t sh_mem_ape1_base, uint32_t sh_mem_ape1_limit,
  57                 uint32_t sh_mem_bases);
  58 static int kgd_set_pasid_vmid_mapping(struct kgd_dev *kgd, unsigned int pasid,
  59                 unsigned int vmid);
  60 static int kgd_init_interrupts(struct kgd_dev *kgd, uint32_t pipe_id);
  61 static int kgd_hqd_load(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
  62                         uint32_t queue_id, uint32_t __user *wptr,
  63                         uint32_t wptr_shift, uint32_t wptr_mask,
  64                         struct mm_struct *mm);
  65 static int kgd_hqd_dump(struct kgd_dev *kgd,
  66                         uint32_t pipe_id, uint32_t queue_id,
  67                         uint32_t (**dump)[2], uint32_t *n_regs);
  68 static int kgd_hqd_sdma_load(struct kgd_dev *kgd, void *mqd,
  69                              uint32_t __user *wptr, struct mm_struct *mm);
  70 static int kgd_hqd_sdma_dump(struct kgd_dev *kgd,
  71                              uint32_t engine_id, uint32_t queue_id,
  72                              uint32_t (**dump)[2], uint32_t *n_regs);
  73 static bool kgd_hqd_is_occupied(struct kgd_dev *kgd, uint64_t queue_address,
  74                 uint32_t pipe_id, uint32_t queue_id);
  75 static bool kgd_hqd_sdma_is_occupied(struct kgd_dev *kgd, void *mqd);
  76 static int kgd_hqd_destroy(struct kgd_dev *kgd, void *mqd,
  77                                 enum kfd_preempt_type reset_type,
  78                                 unsigned int utimeout, uint32_t pipe_id,
  79                                 uint32_t queue_id);
  80 static int kgd_hqd_sdma_destroy(struct kgd_dev *kgd, void *mqd,
  81                                 unsigned int utimeout);
  82 static int kgd_address_watch_disable(struct kgd_dev *kgd);
  83 static int kgd_address_watch_execute(struct kgd_dev *kgd,
  84                                         unsigned int watch_point_id,
  85                                         uint32_t cntl_val,
  86                                         uint32_t addr_hi,
  87                                         uint32_t addr_lo);
  88 static int kgd_wave_control_execute(struct kgd_dev *kgd,
  89                                         uint32_t gfx_index_val,
  90                                         uint32_t sq_cmd);
  91 static uint32_t kgd_address_watch_get_offset(struct kgd_dev *kgd,
  92                                         unsigned int watch_point_id,
  93                                         unsigned int reg_offset);
  94
  95 static bool get_atc_vmid_pasid_mapping_valid(struct kgd_dev *kgd,
  96                 uint8_t vmid);
  97 static uint16_t get_atc_vmid_pasid_mapping_pasid(struct kgd_dev *kgd,
  98                 uint8_t vmid);
  99 static uint16_t get_fw_version(struct kgd_dev *kgd, enum kgd_engine_type type);
 100 static void set_scratch_backing_va(struct kgd_dev *kgd,
 101                                         uint64_t va, uint32_t vmid);
 102 static void set_vm_context_page_table_base(struct kgd_dev *kgd, uint32_t vmid,
 103                 uint32_t page_table_base);
 104 static int invalidate_tlbs(struct kgd_dev *kgd, uint16_t pasid);
 105 static int invalidate_tlbs_vmid(struct kgd_dev *kgd, uint16_t vmid);
 106
 107 /* Because of REG_GET_FIELD() being used, we put this function in the
 108  * asic specific file.
 109  */
 110 static int get_tile_config(struct kgd_dev *kgd,
 111                 struct tile_config *config)
 112 {
 113         struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
 114
 115         config->gb_addr_config = adev->gfx.config.gb_addr_config;
 116         config->num_banks = REG_GET_FIELD(adev->gfx.config.mc_arb_ramcfg,
 117                                 MC_ARB_RAMCFG, NOOFBANK);
 118         config->num_ranks = REG_GET_FIELD(adev->gfx.config.mc_arb_ramcfg,
 119                                 MC_ARB_RAMCFG, NOOFRANKS);
 120
 121         config->tile_config_ptr = adev->gfx.config.tile_mode_array;
 122         config->num_tile_configs =
 123                         ARRAY_SIZE(adev->gfx.config.tile_mode_array);
 124         config->macro_tile_config_ptr =
 125                         adev->gfx.config.macrotile_mode_array;
 126         config->num_macro_tile_configs =
 127                         ARRAY_SIZE(adev->gfx.config.macrotile_mode_array);
 128
 129         return 0;
 130 }
 131
 132 static const struct kfd2kgd_calls kfd2kgd = {
 133         .init_gtt_mem_allocation = alloc_gtt_mem,
 134         .free_gtt_mem = free_gtt_mem,
 135         .get_local_mem_info = get_local_mem_info,
 136         .get_gpu_clock_counter = get_gpu_clock_counter,
 137         .get_max_engine_clock_in_mhz = get_max_engine_clock_in_mhz,
 138         .alloc_pasid = amdgpu_pasid_alloc,
 139         .free_pasid = amdgpu_pasid_free,
 140         .program_sh_mem_settings = kgd_program_sh_mem_settings,
 141         .set_pasid_vmid_mapping = kgd_set_pasid_vmid_mapping,
 142         .init_interrupts = kgd_init_interrupts,
 143         .hqd_load = kgd_hqd_load,
 144         .hqd_sdma_load = kgd_hqd_sdma_load,
 145         .hqd_dump = kgd_hqd_dump,
 146         .hqd_sdma_dump = kgd_hqd_sdma_dump,
 147         .hqd_is_occupied = kgd_hqd_is_occupied,
 148         .hqd_sdma_is_occupied = kgd_hqd_sdma_is_occupied,
 149         .hqd_destroy = kgd_hqd_destroy,
 150         .hqd_sdma_destroy = kgd_hqd_sdma_destroy,
 151         .address_watch_disable = kgd_address_watch_disable,
 152         .address_watch_execute = kgd_address_watch_execute,
 153         .wave_control_execute = kgd_wave_control_execute,
 154         .address_watch_get_offset = kgd_address_watch_get_offset,
 155         .get_atc_vmid_pasid_mapping_pasid =
 156                         get_atc_vmid_pasid_mapping_pasid,
 157         .get_atc_vmid_pasid_mapping_valid =
 158                         get_atc_vmid_pasid_mapping_valid,
 159         .get_fw_version = get_fw_version,
 160         .set_scratch_backing_va = set_scratch_backing_va,
 161         .get_tile_config = get_tile_config,
 162         .get_cu_info = get_cu_info,
 163         .get_vram_usage = amdgpu_amdkfd_get_vram_usage,
 164         .create_process_vm = amdgpu_amdkfd_gpuvm_create_process_vm,
 165         .acquire_process_vm = amdgpu_amdkfd_gpuvm_acquire_process_vm,
 166         .destroy_process_vm = amdgpu_amdkfd_gpuvm_destroy_process_vm,
 167         .get_process_page_dir = amdgpu_amdkfd_gpuvm_get_process_page_dir,
 168         .set_vm_context_page_table_base = set_vm_context_page_table_base,
 169         .alloc_memory_of_gpu = amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu,
 170         .free_memory_of_gpu = amdgpu_amdkfd_gpuvm_free_memory_of_gpu,
 171         .map_memory_to_gpu = amdgpu_amdkfd_gpuvm_map_memory_to_gpu,
 172         .unmap_memory_to_gpu = amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu,
 173         .sync_memory = amdgpu_amdkfd_gpuvm_sync_memory,
 174         .map_gtt_bo_to_kernel = amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel,
 175         .restore_process_bos = amdgpu_amdkfd_gpuvm_restore_process_bos,
 176         .invalidate_tlbs = invalidate_tlbs,
 177         .invalidate_tlbs_vmid = invalidate_tlbs_vmid,
 178         .submit_ib = amdgpu_amdkfd_submit_ib,
 179         .get_vm_fault_info = amdgpu_amdkfd_gpuvm_get_vm_fault_info,
 180         .gpu_recover = amdgpu_amdkfd_gpu_reset,
 181         .set_compute_idle = amdgpu_amdkfd_set_compute_idle
 182 };
 183
 184 struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void)
 185 {
 186         return (struct kfd2kgd_calls *)&kfd2kgd;
 187 }
 188
 189 static inline struct amdgpu_device *get_amdgpu_device(struct kgd_dev *kgd)
 190 {
 191         return (struct amdgpu_device *)kgd;
 192 }
 193
 194 static void lock_srbm(struct kgd_dev *kgd, uint32_t mec, uint32_t pipe,
 195                         uint32_t queue, uint32_t vmid)
 196 {
 197         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 198         uint32_t value = PIPEID(pipe) | MEID(mec) | VMID(vmid) | QUEUEID(queue);
 199
 200         mutex_lock(&adev->srbm_mutex);
 201         WREG32(mmSRBM_GFX_CNTL, value);
 202 }
 203
 204 static void unlock_srbm(struct kgd_dev *kgd)
 205 {
 206         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 207
 208         WREG32(mmSRBM_GFX_CNTL, 0);
 209         mutex_unlock(&adev->srbm_mutex);
 210 }
 211
 212 static void acquire_queue(struct kgd_dev *kgd, uint32_t pipe_id,
 213                                 uint32_t queue_id)
 214 {
 215         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 216
 217         uint32_t mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1;
 218         uint32_t pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec);
 219
 220         lock_srbm(kgd, mec, pipe, queue_id, 0);
 221 }
 222
 223 static void release_queue(struct kgd_dev *kgd)
 224 {
 225         unlock_srbm(kgd);
 226 }
 227
 228 static void kgd_program_sh_mem_settings(struct kgd_dev *kgd, uint32_t vmid,
 229                                         uint32_t sh_mem_config,
 230                                         uint32_t sh_mem_ape1_base,
 231                                         uint32_t sh_mem_ape1_limit,
 232                                         uint32_t sh_mem_bases)
 233 {
 234         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 235
 236         lock_srbm(kgd, 0, 0, 0, vmid);
 237
 238         WREG32(mmSH_MEM_CONFIG, sh_mem_config);
 239         WREG32(mmSH_MEM_APE1_BASE, sh_mem_ape1_base);
 240         WREG32(mmSH_MEM_APE1_LIMIT, sh_mem_ape1_limit);
 241         WREG32(mmSH_MEM_BASES, sh_mem_bases);
 242
 243         unlock_srbm(kgd);
 244 }
 245
 246 static int kgd_set_pasid_vmid_mapping(struct kgd_dev *kgd, unsigned int pasid,
 247                                         unsigned int vmid)
 248 {
 249         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 250
 251         /*
 252          * We have to assume that there is no outstanding mapping.
 253          * The ATC_VMID_PASID_MAPPING_UPDATE_STATUS bit could be 0 because
 254          * a mapping is in progress or because a mapping finished
 255          * and the SW cleared it.
 256          * So the protocol is to always wait & clear.
 257          */
 258         uint32_t pasid_mapping = (pasid == 0) ? 0 : (uint32_t)pasid |
 259                         ATC_VMID0_PASID_MAPPING__VALID_MASK;
 260
 261         WREG32(mmATC_VMID0_PASID_MAPPING + vmid, pasid_mapping);
 262
 263         while (!(RREG32(mmATC_VMID_PASID_MAPPING_UPDATE_STATUS) & (1U << vmid)))
 264                 cpu_relax();
 265         WREG32(mmATC_VMID_PASID_MAPPING_UPDATE_STATUS, 1U << vmid);
 266
 267         /* Mapping vmid to pasid also for IH block */
 268         WREG32(mmIH_VMID_0_LUT + vmid, pasid_mapping);
 269
 270         return 0;
 271 }
 272
 273 static int kgd_init_interrupts(struct kgd_dev *kgd, uint32_t pipe_id)
 274 {
 275         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 276         uint32_t mec;
 277         uint32_t pipe;
 278
 279         mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1;
 280         pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec);
 281
 282         lock_srbm(kgd, mec, pipe, 0, 0);
 283
 284         WREG32(mmCPC_INT_CNTL, CP_INT_CNTL_RING0__TIME_STAMP_INT_ENABLE_MASK);
 285
 286         unlock_srbm(kgd);
 287
 288         return 0;
 289 }
 290
 291 static inline uint32_t get_sdma_base_addr(struct vi_sdma_mqd *m)
 292 {
 293         uint32_t retval;
 294
 295         retval = m->sdma_engine_id * SDMA1_REGISTER_OFFSET +
 296                 m->sdma_queue_id * KFD_VI_SDMA_QUEUE_OFFSET;
 297         pr_debug("kfd: sdma base address: 0x%x\n", retval);
 298
 299         return retval;
 300 }
 301
 302 static inline struct vi_mqd *get_mqd(void *mqd)
 303 {
 304         return (struct vi_mqd *)mqd;
 305 }
 306
 307 static inline struct vi_sdma_mqd *get_sdma_mqd(void *mqd)
 308 {
 309         return (struct vi_sdma_mqd *)mqd;
 310 }
 311
 312 static int kgd_hqd_load(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
 313                         uint32_t queue_id, uint32_t __user *wptr,
 314                         uint32_t wptr_shift, uint32_t wptr_mask,
 315                         struct mm_struct *mm)
 316 {
 317         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 318         struct vi_mqd *m;
 319         uint32_t *mqd_hqd;
 320         uint32_t reg, wptr_val, data;
 321         bool valid_wptr = false;
 322
 323         m = get_mqd(mqd);
 324
 325         acquire_queue(kgd, pipe_id, queue_id);
 326
 327         /* HIQ is set during driver init period with vmid set to 0*/
 328         if (m->cp_hqd_vmid == 0) {
 329                 uint32_t value, mec, pipe;
 330
 331                 mec = (pipe_id / adev->gfx.mec.num_pipe_per_mec) + 1;
 332                 pipe = (pipe_id % adev->gfx.mec.num_pipe_per_mec);
 333
 334                 pr_debug("kfd: set HIQ, mec:%d, pipe:%d, queue:%d.\n",
 335                         mec, pipe, queue_id);
 336                 value = RREG32(mmRLC_CP_SCHEDULERS);
 337                 value = REG_SET_FIELD(value, RLC_CP_SCHEDULERS, scheduler1,
 338                         ((mec << 5) | (pipe << 3) | queue_id | 0x80));
 339                 WREG32(mmRLC_CP_SCHEDULERS, value);
 340         }
 341
 342         /* HQD registers extend from CP_MQD_BASE_ADDR to CP_HQD_EOP_WPTR_MEM. */
 343         mqd_hqd = &m->cp_mqd_base_addr_lo;
 344
 345         for (reg = mmCP_MQD_BASE_ADDR; reg <= mmCP_HQD_EOP_CONTROL; reg++)
 346                 WREG32(reg, mqd_hqd[reg - mmCP_MQD_BASE_ADDR]);
 347
 348         /* Tonga errata: EOP RPTR/WPTR should be left unmodified.
 349          * This is safe since EOP RPTR==WPTR for any inactive HQD
 350          * on ASICs that do not support context-save.
 351          * EOP writes/reads can start anywhere in the ring.
 352          */
 353         if (get_amdgpu_device(kgd)->asic_type != CHIP_TONGA) {
 354                 WREG32(mmCP_HQD_EOP_RPTR, m->cp_hqd_eop_rptr);
 355                 WREG32(mmCP_HQD_EOP_WPTR, m->cp_hqd_eop_wptr);
 356                 WREG32(mmCP_HQD_EOP_WPTR_MEM, m->cp_hqd_eop_wptr_mem);
 357         }
 358
 359         for (reg = mmCP_HQD_EOP_EVENTS; reg <= mmCP_HQD_ERROR; reg++)
 360                 WREG32(reg, mqd_hqd[reg - mmCP_MQD_BASE_ADDR]);
 361
 362         /* Copy userspace write pointer value to register.
 363          * Activate doorbell logic to monitor subsequent changes.
 364          */
 365         data = REG_SET_FIELD(m->cp_hqd_pq_doorbell_control,
 366                              CP_HQD_PQ_DOORBELL_CONTROL, DOORBELL_EN, 1);
 367         WREG32(mmCP_HQD_PQ_DOORBELL_CONTROL, data);
 368
 369         /* read_user_ptr may take the mm->mmap_sem.
 370          * release srbm_mutex to avoid circular dependency between
 371          * srbm_mutex->mm_sem->reservation_ww_class_mutex->srbm_mutex.
 372          */
 373         release_queue(kgd);
 374         valid_wptr = read_user_wptr(mm, wptr, wptr_val);
 375         acquire_queue(kgd, pipe_id, queue_id);
 376         if (valid_wptr)
 377                 WREG32(mmCP_HQD_PQ_WPTR, (wptr_val << wptr_shift) & wptr_mask);
 378
 379         data = REG_SET_FIELD(m->cp_hqd_active, CP_HQD_ACTIVE, ACTIVE, 1);
 380         WREG32(mmCP_HQD_ACTIVE, data);
 381
 382         release_queue(kgd);
 383
 384         return 0;
 385 }
 386
 387 static int kgd_hqd_dump(struct kgd_dev *kgd,
 388                         uint32_t pipe_id, uint32_t queue_id,
 389                         uint32_t (**dump)[2], uint32_t *n_regs)
 390 {
 391         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 392         uint32_t i = 0, reg;
 393 #define HQD_N_REGS (54+4)
 394 #define DUMP_REG(addr) do {                             \
 395                 if (WARN_ON_ONCE(i >= HQD_N_REGS))      \
 396                         break;                          \
 397                 (*dump)[i][0] = (addr) << 2;            \
 398                 (*dump)[i++][1] = RREG32(addr);         \
 399         } while (0)
 400
 401         *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
 402         if (*dump == NULL)
 403                 return -ENOMEM;
 404
 405         acquire_queue(kgd, pipe_id, queue_id);
 406
 407         DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE0);
 408         DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE1);
 409         DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE2);
 410         DUMP_REG(mmCOMPUTE_STATIC_THREAD_MGMT_SE3);
 411
 412         for (reg = mmCP_MQD_BASE_ADDR; reg <= mmCP_HQD_EOP_DONES; reg++)
 413                 DUMP_REG(reg);
 414
 415         release_queue(kgd);
 416
 417         WARN_ON_ONCE(i != HQD_N_REGS);
 418         *n_regs = i;
 419
 420         return 0;
 421 }
 422
 423 static int kgd_hqd_sdma_load(struct kgd_dev *kgd, void *mqd,
 424                              uint32_t __user *wptr, struct mm_struct *mm)
 425 {
 426         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 427         struct vi_sdma_mqd *m;
 428         unsigned long end_jiffies;
 429         uint32_t sdma_base_addr;
 430         uint32_t data;
 431
 432         m = get_sdma_mqd(mqd);
 433         sdma_base_addr = get_sdma_base_addr(m);
 434         WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL,
 435                 m->sdmax_rlcx_rb_cntl & (~SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK));
 436
 437         end_jiffies = msecs_to_jiffies(2000) + jiffies;
 438         while (true) {
 439                 data = RREG32(sdma_base_addr + mmSDMA0_RLC0_CONTEXT_STATUS);
 440                 if (data & SDMA0_RLC0_CONTEXT_STATUS__IDLE_MASK)
 441                         break;
 442                 if (time_after(jiffies, end_jiffies))
 443                         return -ETIME;
 444                 usleep_range(500, 1000);
 445         }
 446         if (m->sdma_engine_id) {
 447                 data = RREG32(mmSDMA1_GFX_CONTEXT_CNTL);
 448                 data = REG_SET_FIELD(data, SDMA1_GFX_CONTEXT_CNTL,
 449                                 RESUME_CTX, 0);
 450                 WREG32(mmSDMA1_GFX_CONTEXT_CNTL, data);
 451         } else {
 452                 data = RREG32(mmSDMA0_GFX_CONTEXT_CNTL);
 453                 data = REG_SET_FIELD(data, SDMA0_GFX_CONTEXT_CNTL,
 454                                 RESUME_CTX, 0);
 455                 WREG32(mmSDMA0_GFX_CONTEXT_CNTL, data);
 456         }
 457
 458         data = REG_SET_FIELD(m->sdmax_rlcx_doorbell, SDMA0_RLC0_DOORBELL,
 459                              ENABLE, 1);
 460         WREG32(sdma_base_addr + mmSDMA0_RLC0_DOORBELL, data);
 461         WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR, m->sdmax_rlcx_rb_rptr);
 462
 463         if (read_user_wptr(mm, wptr, data))
 464                 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_WPTR, data);
 465         else
 466                 WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_WPTR,
 467                        m->sdmax_rlcx_rb_rptr);
 468
 469         WREG32(sdma_base_addr + mmSDMA0_RLC0_VIRTUAL_ADDR,
 470                                 m->sdmax_rlcx_virtual_addr);
 471         WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_BASE, m->sdmax_rlcx_rb_base);
 472         WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_BASE_HI,
 473                         m->sdmax_rlcx_rb_base_hi);
 474         WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR_ADDR_LO,
 475                         m->sdmax_rlcx_rb_rptr_addr_lo);
 476         WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR_ADDR_HI,
 477                         m->sdmax_rlcx_rb_rptr_addr_hi);
 478
 479         data = REG_SET_FIELD(m->sdmax_rlcx_rb_cntl, SDMA0_RLC0_RB_CNTL,
 480                              RB_ENABLE, 1);
 481         WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL, data);
 482
 483         return 0;
 484 }
 485
 486 static int kgd_hqd_sdma_dump(struct kgd_dev *kgd,
 487                              uint32_t engine_id, uint32_t queue_id,
 488                              uint32_t (**dump)[2], uint32_t *n_regs)
 489 {
 490         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 491         uint32_t sdma_offset = engine_id * SDMA1_REGISTER_OFFSET +
 492                 queue_id * KFD_VI_SDMA_QUEUE_OFFSET;
 493         uint32_t i = 0, reg;
 494 #undef HQD_N_REGS
 495 #define HQD_N_REGS (19+4+2+3+7)
 496
 497         *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
 498         if (*dump == NULL)
 499                 return -ENOMEM;
 500
 501         for (reg = mmSDMA0_RLC0_RB_CNTL; reg <= mmSDMA0_RLC0_DOORBELL; reg++)
 502                 DUMP_REG(sdma_offset + reg);
 503         for (reg = mmSDMA0_RLC0_VIRTUAL_ADDR; reg <= mmSDMA0_RLC0_WATERMARK;
 504              reg++)
 505                 DUMP_REG(sdma_offset + reg);
 506         for (reg = mmSDMA0_RLC0_CSA_ADDR_LO; reg <= mmSDMA0_RLC0_CSA_ADDR_HI;
 507              reg++)
 508                 DUMP_REG(sdma_offset + reg);
 509         for (reg = mmSDMA0_RLC0_IB_SUB_REMAIN; reg <= mmSDMA0_RLC0_DUMMY_REG;
 510              reg++)
 511                 DUMP_REG(sdma_offset + reg);
 512         for (reg = mmSDMA0_RLC0_MIDCMD_DATA0; reg <= mmSDMA0_RLC0_MIDCMD_CNTL;
 513              reg++)
 514                 DUMP_REG(sdma_offset + reg);
 515
 516         WARN_ON_ONCE(i != HQD_N_REGS);
 517         *n_regs = i;
 518
 519         return 0;
 520 }
 521
 522 static bool kgd_hqd_is_occupied(struct kgd_dev *kgd, uint64_t queue_address,
 523                                 uint32_t pipe_id, uint32_t queue_id)
 524 {
 525         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 526         uint32_t act;
 527         bool retval = false;
 528         uint32_t low, high;
 529
 530         acquire_queue(kgd, pipe_id, queue_id);
 531         act = RREG32(mmCP_HQD_ACTIVE);
 532         if (act) {
 533                 low = lower_32_bits(queue_address >> 8);
 534                 high = upper_32_bits(queue_address >> 8);
 535
 536                 if (low == RREG32(mmCP_HQD_PQ_BASE) &&
 537                                 high == RREG32(mmCP_HQD_PQ_BASE_HI))
 538                         retval = true;
 539         }
 540         release_queue(kgd);
 541         return retval;
 542 }
 543
 544 static bool kgd_hqd_sdma_is_occupied(struct kgd_dev *kgd, void *mqd)
 545 {
 546         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 547         struct vi_sdma_mqd *m;
 548         uint32_t sdma_base_addr;
 549         uint32_t sdma_rlc_rb_cntl;
 550
 551         m = get_sdma_mqd(mqd);
 552         sdma_base_addr = get_sdma_base_addr(m);
 553
 554         sdma_rlc_rb_cntl = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL);
 555
 556         if (sdma_rlc_rb_cntl & SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK)
 557                 return true;
 558
 559         return false;
 560 }
 561
 562 static int kgd_hqd_destroy(struct kgd_dev *kgd, void *mqd,
 563                                 enum kfd_preempt_type reset_type,
 564                                 unsigned int utimeout, uint32_t pipe_id,
 565                                 uint32_t queue_id)
 566 {
 567         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 568         uint32_t temp;
 569         enum hqd_dequeue_request_type type;
 570         unsigned long flags, end_jiffies;
 571         int retry;
 572         struct vi_mqd *m = get_mqd(mqd);
 573
 574         if (adev->in_gpu_reset)
 575                 return -EIO;
 576
 577         acquire_queue(kgd, pipe_id, queue_id);
 578
 579         if (m->cp_hqd_vmid == 0)
 580                 WREG32_FIELD(RLC_CP_SCHEDULERS, scheduler1, 0);
 581
 582         switch (reset_type) {
 583         case KFD_PREEMPT_TYPE_WAVEFRONT_DRAIN:
 584                 type = DRAIN_PIPE;
 585                 break;
 586         case KFD_PREEMPT_TYPE_WAVEFRONT_RESET:
 587                 type = RESET_WAVES;
 588                 break;
 589         default:
 590                 type = DRAIN_PIPE;
 591                 break;
 592         }
 593
 594         /* Workaround: If IQ timer is active and the wait time is close to or
 595          * equal to 0, dequeueing is not safe. Wait until either the wait time
 596          * is larger or timer is cleared. Also, ensure that IQ_REQ_PEND is
 597          * cleared before continuing. Also, ensure wait times are set to at
 598          * least 0x3.
 599          */
 600         local_irq_save(flags);
 601         preempt_disable();
 602         retry = 5000; /* wait for 500 usecs at maximum */
 603         while (true) {
 604                 temp = RREG32(mmCP_HQD_IQ_TIMER);
 605                 if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, PROCESSING_IQ)) {
 606                         pr_debug("HW is processing IQ\n");
 607                         goto loop;
 608                 }
 609                 if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, ACTIVE)) {
 610                         if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, RETRY_TYPE)
 611                                         == 3) /* SEM-rearm is safe */
 612                                 break;
 613                         /* Wait time 3 is safe for CP, but our MMIO read/write
 614                          * time is close to 1 microsecond, so check for 10 to
 615                          * leave more buffer room
 616                          */
 617                         if (REG_GET_FIELD(temp, CP_HQD_IQ_TIMER, WAIT_TIME)
 618                                         >= 10)
 619                                 break;
 620                         pr_debug("IQ timer is active\n");
 621                 } else
 622                         break;
 623 loop:
 624                 if (!retry) {
 625                         pr_err("CP HQD IQ timer status time out\n");
 626                         break;
 627                 }
 628                 ndelay(100);
 629                 --retry;
 630         }
 631         retry = 1000;
 632         while (true) {
 633                 temp = RREG32(mmCP_HQD_DEQUEUE_REQUEST);
 634                 if (!(temp & CP_HQD_DEQUEUE_REQUEST__IQ_REQ_PEND_MASK))
 635                         break;
 636                 pr_debug("Dequeue request is pending\n");
 637
 638                 if (!retry) {
 639                         pr_err("CP HQD dequeue request time out\n");
 640                         break;
 641                 }
 642                 ndelay(100);
 643                 --retry;
 644         }
 645         local_irq_restore(flags);
 646         preempt_enable();
 647
 648         WREG32(mmCP_HQD_DEQUEUE_REQUEST, type);
 649
 650         end_jiffies = (utimeout * HZ / 1000) + jiffies;
 651         while (true) {
 652                 temp = RREG32(mmCP_HQD_ACTIVE);
 653                 if (!(temp & CP_HQD_ACTIVE__ACTIVE_MASK))
 654                         break;
 655                 if (time_after(jiffies, end_jiffies)) {
 656                         pr_err("cp queue preemption time out.\n");
 657                         release_queue(kgd);
 658                         return -ETIME;
 659                 }
 660                 usleep_range(500, 1000);
 661         }
 662
 663         release_queue(kgd);
 664         return 0;
 665 }
 666
 667 static int kgd_hqd_sdma_destroy(struct kgd_dev *kgd, void *mqd,
 668                                 unsigned int utimeout)
 669 {
 670         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 671         struct vi_sdma_mqd *m;
 672         uint32_t sdma_base_addr;
 673         uint32_t temp;
 674         unsigned long end_jiffies = (utimeout * HZ / 1000) + jiffies;
 675
 676         m = get_sdma_mqd(mqd);
 677         sdma_base_addr = get_sdma_base_addr(m);
 678
 679         temp = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL);
 680         temp = temp & ~SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK;
 681         WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL, temp);
 682
 683         while (true) {
 684                 temp = RREG32(sdma_base_addr + mmSDMA0_RLC0_CONTEXT_STATUS);
 685                 if (temp & SDMA0_RLC0_CONTEXT_STATUS__IDLE_MASK)
 686                         break;
 687                 if (time_after(jiffies, end_jiffies))
 688                         return -ETIME;
 689                 usleep_range(500, 1000);
 690         }
 691
 692         WREG32(sdma_base_addr + mmSDMA0_RLC0_DOORBELL, 0);
 693         WREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL,
 694                 RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_CNTL) |
 695                 SDMA0_RLC0_RB_CNTL__RB_ENABLE_MASK);
 696
 697         m->sdmax_rlcx_rb_rptr = RREG32(sdma_base_addr + mmSDMA0_RLC0_RB_RPTR);
 698
 699         return 0;
 700 }
 701
 702 static bool get_atc_vmid_pasid_mapping_valid(struct kgd_dev *kgd,
 703                                                         uint8_t vmid)
 704 {
 705         uint32_t reg;
 706         struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
 707
 708         reg = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
 709         return reg & ATC_VMID0_PASID_MAPPING__VALID_MASK;
 710 }
 711
 712 static uint16_t get_atc_vmid_pasid_mapping_pasid(struct kgd_dev *kgd,
 713                                                                 uint8_t vmid)
 714 {
 715         uint32_t reg;
 716         struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
 717
 718         reg = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
 719         return reg & ATC_VMID0_PASID_MAPPING__PASID_MASK;
 720 }
 721
 722 static int kgd_address_watch_disable(struct kgd_dev *kgd)
 723 {
 724         return 0;
 725 }
 726
 727 static int kgd_address_watch_execute(struct kgd_dev *kgd,
 728                                         unsigned int watch_point_id,
 729                                         uint32_t cntl_val,
 730                                         uint32_t addr_hi,
 731                                         uint32_t addr_lo)
 732 {
 733         return 0;
 734 }
 735
 736 static int kgd_wave_control_execute(struct kgd_dev *kgd,
 737                                         uint32_t gfx_index_val,
 738                                         uint32_t sq_cmd)
 739 {
 740         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 741         uint32_t data = 0;
 742
 743         mutex_lock(&adev->grbm_idx_mutex);
 744
 745         WREG32(mmGRBM_GFX_INDEX, gfx_index_val);
 746         WREG32(mmSQ_CMD, sq_cmd);
 747
 748         data = REG_SET_FIELD(data, GRBM_GFX_INDEX,
 749                 INSTANCE_BROADCAST_WRITES, 1);
 750         data = REG_SET_FIELD(data, GRBM_GFX_INDEX,
 751                 SH_BROADCAST_WRITES, 1);
 752         data = REG_SET_FIELD(data, GRBM_GFX_INDEX,
 753                 SE_BROADCAST_WRITES, 1);
 754
 755         WREG32(mmGRBM_GFX_INDEX, data);
 756         mutex_unlock(&adev->grbm_idx_mutex);
 757
 758         return 0;
 759 }
 760
 761 static uint32_t kgd_address_watch_get_offset(struct kgd_dev *kgd,
 762                                         unsigned int watch_point_id,
 763                                         unsigned int reg_offset)
 764 {
 765         return 0;
 766 }
 767
 768 static void set_scratch_backing_va(struct kgd_dev *kgd,
 769                                         uint64_t va, uint32_t vmid)
 770 {
 771         struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
 772
 773         lock_srbm(kgd, 0, 0, 0, vmid);
 774         WREG32(mmSH_HIDDEN_PRIVATE_BASE_VMID, va);
 775         unlock_srbm(kgd);
 776 }
 777
 778 static uint16_t get_fw_version(struct kgd_dev *kgd, enum kgd_engine_type type)
 779 {
 780         struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
 781         const union amdgpu_firmware_header *hdr;
 782
 783         switch (type) {
 784         case KGD_ENGINE_PFP:
 785                 hdr = (const union amdgpu_firmware_header *)
 786                                                 adev->gfx.pfp_fw->data;
 787                 break;
 788
 789         case KGD_ENGINE_ME:
 790                 hdr = (const union amdgpu_firmware_header *)
 791                                                 adev->gfx.me_fw->data;
 792                 break;
 793
 794         case KGD_ENGINE_CE:
 795                 hdr = (const union amdgpu_firmware_header *)
 796                                                 adev->gfx.ce_fw->data;
 797                 break;
 798
 799         case KGD_ENGINE_MEC1:
 800                 hdr = (const union amdgpu_firmware_header *)
 801                                                 adev->gfx.mec_fw->data;
 802                 break;
 803
 804         case KGD_ENGINE_MEC2:
 805                 hdr = (const union amdgpu_firmware_header *)
 806                                                 adev->gfx.mec2_fw->data;
 807                 break;
 808
 809         case KGD_ENGINE_RLC:
 810                 hdr = (const union amdgpu_firmware_header *)
 811                                                 adev->gfx.rlc_fw->data;
 812                 break;
 813
 814         case KGD_ENGINE_SDMA1:
 815                 hdr = (const union amdgpu_firmware_header *)
 816                                                 adev->sdma.instance[0].fw->data;
 817                 break;
 818
 819         case KGD_ENGINE_SDMA2:
 820                 hdr = (const union amdgpu_firmware_header *)
 821                                                 adev->sdma.instance[1].fw->data;
 822                 break;
 823
 824         default:
 825                 return 0;
 826         }
 827
 828         if (hdr == NULL)
 829                 return 0;
 830
 831         /* Only 12 bit in use*/
 832         return hdr->common.ucode_version;
 833 }
 834
 835 static void set_vm_context_page_table_base(struct kgd_dev *kgd, uint32_t vmid,
 836                 uint32_t page_table_base)
 837 {
 838         struct amdgpu_device *adev = get_amdgpu_device(kgd);
 839
 840         if (!amdgpu_amdkfd_is_kfd_vmid(adev, vmid)) {
 841                 pr_err("trying to set page table base for wrong VMID\n");
 842                 return;
 843         }
 844         WREG32(mmVM_CONTEXT8_PAGE_TABLE_BASE_ADDR + vmid - 8, page_table_base);
 845 }
 846
 847 static int invalidate_tlbs(struct kgd_dev *kgd, uint16_t pasid)
 848 {
 849         struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
 850         int vmid;
 851         unsigned int tmp;
 852
 853         if (adev->in_gpu_reset)
 854                 return -EIO;
 855
 856         for (vmid = 0; vmid < 16; vmid++) {
 857                 if (!amdgpu_amdkfd_is_kfd_vmid(adev, vmid))
 858                         continue;
 859
 860                 tmp = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
 861                 if ((tmp & ATC_VMID0_PASID_MAPPING__VALID_MASK) &&
 862                         (tmp & ATC_VMID0_PASID_MAPPING__PASID_MASK) == pasid) {
 863                         WREG32(mmVM_INVALIDATE_REQUEST, 1 << vmid);
 864                         RREG32(mmVM_INVALIDATE_RESPONSE);
 865                         break;
 866                 }
 867         }
 868
 869         return 0;
 870 }
 871
 872 static int invalidate_tlbs_vmid(struct kgd_dev *kgd, uint16_t vmid)
 873 {
 874         struct amdgpu_device *adev = (struct amdgpu_device *) kgd;
 875
 876         if (!amdgpu_amdkfd_is_kfd_vmid(adev, vmid)) {
 877                 pr_err("non kfd vmid %d\n", vmid);
 878                 return -EINVAL;
 879         }
 880
 881         WREG32(mmVM_INVALIDATE_REQUEST, 1 << vmid);
 882         RREG32(mmVM_INVALIDATE_RESPONSE);
 883         return 0;
 884 }