drivers/gpu/drm/amd/amdgpu/tonga_smc.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
  24 #include <linux/firmware.h>
  25 #include "drmP.h"
  26 #include "amdgpu.h"
  27 #include "tonga_ppsmc.h"
  28 #include "tonga_smum.h"
  29 #include "smu_ucode_xfer_vi.h"
  30 #include "amdgpu_ucode.h"
  31
  32 #include "smu/smu_7_1_2_d.h"
  33 #include "smu/smu_7_1_2_sh_mask.h"
  34
  35 #define TONGA_SMC_SIZE 0x20000
  36
  37 static int tonga_set_smc_sram_address(struct amdgpu_device *adev, uint32_t smc_address, uint32_t limit)
  38 {
  39         uint32_t val;
  40
  41         if (smc_address & 3)
  42                 return -EINVAL;
  43
  44         if ((smc_address + 3) > limit)
  45                 return -EINVAL;
  46
  47         WREG32(mmSMC_IND_INDEX_0, smc_address);
  48
  49         val = RREG32(mmSMC_IND_ACCESS_CNTL);
  50         val = REG_SET_FIELD(val, SMC_IND_ACCESS_CNTL, AUTO_INCREMENT_IND_0, 0);
  51         WREG32(mmSMC_IND_ACCESS_CNTL, val);
  52
  53         return 0;
  54 }
  55
  56 static int tonga_copy_bytes_to_smc(struct amdgpu_device *adev, uint32_t smc_start_address, const uint8_t *src, uint32_t byte_count, uint32_t limit)
  57 {
  58         uint32_t addr;
  59         uint32_t data, orig_data;
  60         int result = 0;
  61         uint32_t extra_shift;
  62         unsigned long flags;
  63
  64         if (smc_start_address & 3)
  65                 return -EINVAL;
  66
  67         if ((smc_start_address + byte_count) > limit)
  68                 return -EINVAL;
  69
  70         addr = smc_start_address;
  71
  72         spin_lock_irqsave(&adev->smc_idx_lock, flags);
  73         while (byte_count >= 4) {
  74                 /* Bytes are written into the SMC addres space with the MSB first */
  75                 data = (src[0] << 24) + (src[1] << 16) + (src[2] << 8) + src[3];
  76
  77                 result = tonga_set_smc_sram_address(adev, addr, limit);
  78
  79                 if (result)
  80                         goto out;
  81
  82                 WREG32(mmSMC_IND_DATA_0, data);
  83
  84                 src += 4;
  85                 byte_count -= 4;
  86                 addr += 4;
  87         }
  88
  89         if (0 != byte_count) {
  90                 /* Now write odd bytes left, do a read modify write cycle */
  91                 data = 0;
  92
  93                 result = tonga_set_smc_sram_address(adev, addr, limit);
  94                 if (result)
  95                         goto out;
  96
  97                 orig_data = RREG32(mmSMC_IND_DATA_0);
  98                 extra_shift = 8 * (4 - byte_count);
  99
 100                 while (byte_count > 0) {
 101                         data = (data << 8) + *src++;
 102                         byte_count--;
 103                 }
 104
 105                 data <<= extra_shift;
 106                 data |= (orig_data & ~((~0UL) << extra_shift));
 107
 108                 result = tonga_set_smc_sram_address(adev, addr, limit);
 109                 if (result)
 110                         goto out;
 111
 112                 WREG32(mmSMC_IND_DATA_0, data);
 113         }
 114
 115 out:
 116         spin_unlock_irqrestore(&adev->smc_idx_lock, flags);
 117         return result;
 118 }
 119
 120 static int tonga_program_jump_on_start(struct amdgpu_device *adev)
 121 {
 122         static unsigned char data[] = {0xE0, 0x00, 0x80, 0x40};
 123         tonga_copy_bytes_to_smc(adev, 0x0, data, 4, sizeof(data)+1);
 124
 125         return 0;
 126 }
 127
 128 static bool tonga_is_smc_ram_running(struct amdgpu_device *adev)
 129 {
 130         uint32_t val = RREG32_SMC(ixSMC_SYSCON_CLOCK_CNTL_0);
 131         val = REG_GET_FIELD(val, SMC_SYSCON_CLOCK_CNTL_0, ck_disable);
 132
 133         return ((0 == val) && (0x20100 <= RREG32_SMC(ixSMC_PC_C)));
 134 }
 135
 136 static int wait_smu_response(struct amdgpu_device *adev)
 137 {
 138         int i;
 139         uint32_t val;
 140
 141         for (i = 0; i < adev->usec_timeout; i++) {
 142                 val = RREG32(mmSMC_RESP_0);
 143                 if (REG_GET_FIELD(val, SMC_RESP_0, SMC_RESP))
 144                         break;
 145                 udelay(1);
 146         }
 147
 148         if (i == adev->usec_timeout)
 149                 return -EINVAL;
 150
 151         return 0;
 152 }
 153
 154 static int tonga_send_msg_to_smc_offset(struct amdgpu_device *adev)
 155 {
 156         if (wait_smu_response(adev)) {
 157                 DRM_ERROR("Failed to send previous message\n");
 158                 return -EINVAL;
 159         }
 160
 161         WREG32(mmSMC_MSG_ARG_0, 0x20000);
 162         WREG32(mmSMC_MESSAGE_0, PPSMC_MSG_Test);
 163
 164         if (wait_smu_response(adev)) {
 165                 DRM_ERROR("Failed to send message\n");
 166                 return -EINVAL;
 167         }
 168
 169         return 0;
 170 }
 171
 172 static int tonga_send_msg_to_smc(struct amdgpu_device *adev, PPSMC_Msg msg)
 173 {
 174         if (!tonga_is_smc_ram_running(adev))
 175         {
 176                 return -EINVAL;;
 177         }
 178
 179         if (wait_smu_response(adev)) {
 180                 DRM_ERROR("Failed to send previous message\n");
 181                 return -EINVAL;
 182         }
 183
 184         WREG32(mmSMC_MESSAGE_0, msg);
 185
 186         if (wait_smu_response(adev)) {
 187                 DRM_ERROR("Failed to send message\n");
 188                 return -EINVAL;
 189         }
 190
 191         return 0;
 192 }
 193
 194 static int tonga_send_msg_to_smc_without_waiting(struct amdgpu_device *adev,
 195                                                 PPSMC_Msg msg)
 196 {
 197         if (wait_smu_response(adev)) {
 198                 DRM_ERROR("Failed to send previous message\n");
 199                 return -EINVAL;
 200         }
 201
 202         WREG32(mmSMC_MESSAGE_0, msg);
 203
 204         return 0;
 205 }
 206
 207 static int tonga_send_msg_to_smc_with_parameter(struct amdgpu_device *adev,
 208                                                 PPSMC_Msg msg,
 209                                                 uint32_t parameter)
 210 {
 211         if (!tonga_is_smc_ram_running(adev))
 212                 return -EINVAL;
 213
 214         if (wait_smu_response(adev)) {
 215                 DRM_ERROR("Failed to send previous message\n");
 216                 return -EINVAL;
 217         }
 218
 219         WREG32(mmSMC_MSG_ARG_0, parameter);
 220
 221         return tonga_send_msg_to_smc(adev, msg);
 222 }
 223
 224 static int tonga_send_msg_to_smc_with_parameter_without_waiting(
 225                                         struct amdgpu_device *adev,
 226                                         PPSMC_Msg msg, uint32_t parameter)
 227 {
 228         if (wait_smu_response(adev)) {
 229                 DRM_ERROR("Failed to send previous message\n");
 230                 return -EINVAL;
 231         }
 232
 233         WREG32(mmSMC_MSG_ARG_0, parameter);
 234
 235         return tonga_send_msg_to_smc_without_waiting(adev, msg);
 236 }
 237
 238 #if 0 /* not used yet */
 239 static int tonga_wait_for_smc_inactive(struct amdgpu_device *adev)
 240 {
 241         int i;
 242         uint32_t val;
 243
 244         if (!tonga_is_smc_ram_running(adev))
 245                 return -EINVAL;
 246
 247         for (i = 0; i < adev->usec_timeout; i++) {
 248                 val = RREG32_SMC(ixSMC_SYSCON_CLOCK_CNTL_0);
 249                 if (REG_GET_FIELD(val, SMC_SYSCON_CLOCK_CNTL_0, cken) == 0)
 250                         break;
 251                 udelay(1);
 252         }
 253
 254         if (i == adev->usec_timeout)
 255                 return -EINVAL;
 256
 257         return 0;
 258 }
 259 #endif
 260
 261 static int tonga_smu_upload_firmware_image(struct amdgpu_device *adev)
 262 {
 263         const struct smc_firmware_header_v1_0 *hdr;
 264         uint32_t ucode_size;
 265         uint32_t ucode_start_address;
 266         const uint8_t *src;
 267         uint32_t val;
 268         uint32_t byte_count;
 269         uint32_t *data;
 270         unsigned long flags;
 271
 272         if (!adev->pm.fw)
 273                 return -EINVAL;
 274
 275         hdr = (const struct smc_firmware_header_v1_0 *)adev->pm.fw->data;
 276         amdgpu_ucode_print_smc_hdr(&hdr->header);
 277
 278         adev->pm.fw_version = le32_to_cpu(hdr->header.ucode_version);
 279         ucode_size = le32_to_cpu(hdr->header.ucode_size_bytes);
 280         ucode_start_address = le32_to_cpu(hdr->ucode_start_addr);
 281         src = (const uint8_t *)
 282                 (adev->pm.fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
 283
 284         if (ucode_size & 3) {
 285                 DRM_ERROR("SMC ucode is not 4 bytes aligned\n");
 286                 return -EINVAL;
 287         }
 288
 289         if (ucode_size > TONGA_SMC_SIZE) {
 290                 DRM_ERROR("SMC address is beyond the SMC RAM area\n");
 291                 return -EINVAL;
 292         }
 293
 294         spin_lock_irqsave(&adev->smc_idx_lock, flags);
 295         WREG32(mmSMC_IND_INDEX_0, ucode_start_address);
 296
 297         val = RREG32(mmSMC_IND_ACCESS_CNTL);
 298         val = REG_SET_FIELD(val, SMC_IND_ACCESS_CNTL, AUTO_INCREMENT_IND_0, 1);
 299         WREG32(mmSMC_IND_ACCESS_CNTL, val);
 300
 301         byte_count = ucode_size;
 302         data = (uint32_t *)src;
 303         for (; byte_count >= 4; data++, byte_count -= 4)
 304                 WREG32(mmSMC_IND_DATA_0, data[0]);
 305
 306         val = RREG32(mmSMC_IND_ACCESS_CNTL);
 307         val = REG_SET_FIELD(val, SMC_IND_ACCESS_CNTL, AUTO_INCREMENT_IND_0, 0);
 308         WREG32(mmSMC_IND_ACCESS_CNTL, val);
 309         spin_unlock_irqrestore(&adev->smc_idx_lock, flags);
 310
 311         return 0;
 312 }
 313
 314 #if 0 /* not used yet */
 315 static int tonga_read_smc_sram_dword(struct amdgpu_device *adev,
 316                                 uint32_t smc_address,
 317                                 uint32_t *value,
 318                                 uint32_t limit)
 319 {
 320         int result;
 321         unsigned long flags;
 322
 323         spin_lock_irqsave(&adev->smc_idx_lock, flags);
 324         result = tonga_set_smc_sram_address(adev, smc_address, limit);
 325         if (result == 0)
 326                 *value = RREG32(mmSMC_IND_DATA_0);
 327         spin_unlock_irqrestore(&adev->smc_idx_lock, flags);
 328         return result;
 329 }
 330
 331 static int tonga_write_smc_sram_dword(struct amdgpu_device *adev,
 332                                 uint32_t smc_address,
 333                                 uint32_t value,
 334                                 uint32_t limit)
 335 {
 336         int result;
 337         unsigned long flags;
 338
 339         spin_lock_irqsave(&adev->smc_idx_lock, flags);
 340         result = tonga_set_smc_sram_address(adev, smc_address, limit);
 341         if (result == 0)
 342                 WREG32(mmSMC_IND_DATA_0, value);
 343         spin_unlock_irqrestore(&adev->smc_idx_lock, flags);
 344         return result;
 345 }
 346
 347 static int tonga_smu_stop_smc(struct amdgpu_device *adev)
 348 {
 349         uint32_t val = RREG32_SMC(ixSMC_SYSCON_RESET_CNTL);
 350         val = REG_SET_FIELD(val, SMC_SYSCON_RESET_CNTL, rst_reg, 1);
 351         WREG32_SMC(ixSMC_SYSCON_RESET_CNTL, val);
 352
 353         val = RREG32_SMC(ixSMC_SYSCON_CLOCK_CNTL_0);
 354         val = REG_SET_FIELD(val, SMC_SYSCON_CLOCK_CNTL_0, ck_disable, 1);
 355         WREG32_SMC(ixSMC_SYSCON_CLOCK_CNTL_0, val);
 356
 357         return 0;
 358 }
 359 #endif
 360
 361 static enum AMDGPU_UCODE_ID tonga_convert_fw_type(uint32_t fw_type)
 362 {
 363         switch (fw_type) {
 364                 case UCODE_ID_SDMA0:
 365                         return AMDGPU_UCODE_ID_SDMA0;
 366                 case UCODE_ID_SDMA1:
 367                         return AMDGPU_UCODE_ID_SDMA1;
 368                 case UCODE_ID_CP_CE:
 369                         return AMDGPU_UCODE_ID_CP_CE;
 370                 case UCODE_ID_CP_PFP:
 371                         return AMDGPU_UCODE_ID_CP_PFP;
 372                 case UCODE_ID_CP_ME:
 373                         return AMDGPU_UCODE_ID_CP_ME;
 374                 case UCODE_ID_CP_MEC:
 375                 case UCODE_ID_CP_MEC_JT1:
 376                         return AMDGPU_UCODE_ID_CP_MEC1;
 377                 case UCODE_ID_CP_MEC_JT2:
 378                         return AMDGPU_UCODE_ID_CP_MEC2;
 379                 case UCODE_ID_RLC_G:
 380                         return AMDGPU_UCODE_ID_RLC_G;
 381                 default:
 382                         DRM_ERROR("ucode type is out of range!\n");
 383                         return AMDGPU_UCODE_ID_MAXIMUM;
 384         }
 385 }
 386
 387 static int tonga_smu_populate_single_firmware_entry(struct amdgpu_device *adev,
 388                                                 uint32_t fw_type,
 389                                                 struct SMU_Entry *entry)
 390 {
 391         enum AMDGPU_UCODE_ID id = tonga_convert_fw_type(fw_type);
 392         struct amdgpu_firmware_info *ucode = &adev->firmware.ucode[id];
 393         const struct gfx_firmware_header_v1_0 *header = NULL;
 394         uint64_t gpu_addr;
 395         uint32_t data_size;
 396
 397         if (ucode->fw == NULL)
 398                 return -EINVAL;
 399
 400         gpu_addr  = ucode->mc_addr;
 401         header = (const struct gfx_firmware_header_v1_0 *)ucode->fw->data;
 402         data_size = le32_to_cpu(header->header.ucode_size_bytes);
 403
 404         if ((fw_type == UCODE_ID_CP_MEC_JT1) ||
 405                 (fw_type == UCODE_ID_CP_MEC_JT2)) {
 406                 gpu_addr += le32_to_cpu(header->jt_offset) << 2;
 407                 data_size = le32_to_cpu(header->jt_size) << 2;
 408         }
 409
 410         entry->version = (uint16_t)le32_to_cpu(header->header.ucode_version);
 411         entry->id = (uint16_t)fw_type;
 412         entry->image_addr_high = upper_32_bits(gpu_addr);
 413         entry->image_addr_low = lower_32_bits(gpu_addr);
 414         entry->meta_data_addr_high = 0;
 415         entry->meta_data_addr_low = 0;
 416         entry->data_size_byte = data_size;
 417         entry->num_register_entries = 0;
 418
 419         if (fw_type == UCODE_ID_RLC_G)
 420                 entry->flags = 1;
 421         else
 422                 entry->flags = 0;
 423
 424         return 0;
 425 }
 426
 427 static int tonga_smu_request_load_fw(struct amdgpu_device *adev)
 428 {
 429         struct tonga_smu_private_data *private = (struct tonga_smu_private_data *)adev->smu.priv;
 430         struct SMU_DRAMData_TOC *toc;
 431         uint32_t fw_to_load;
 432
 433         WREG32_SMC(ixSOFT_REGISTERS_TABLE_28, 0);
 434
 435         tonga_send_msg_to_smc_with_parameter(adev, PPSMC_MSG_SMU_DRAM_ADDR_HI, private->smu_buffer_addr_high);
 436         tonga_send_msg_to_smc_with_parameter(adev, PPSMC_MSG_SMU_DRAM_ADDR_LO, private->smu_buffer_addr_low);
 437
 438         toc = (struct SMU_DRAMData_TOC *)private->header;
 439         toc->num_entries = 0;
 440         toc->structure_version = 1;
 441
 442         if (!adev->firmware.smu_load)
 443                 return 0;
 444
 445         if (tonga_smu_populate_single_firmware_entry(adev, UCODE_ID_RLC_G,
 446                         &toc->entry[toc->num_entries++])) {
 447                 DRM_ERROR("Failed to get firmware entry for RLC\n");
 448                 return -EINVAL;
 449         }
 450
 451         if (tonga_smu_populate_single_firmware_entry(adev, UCODE_ID_CP_CE,
 452                         &toc->entry[toc->num_entries++])) {
 453                 DRM_ERROR("Failed to get firmware entry for CE\n");
 454                 return -EINVAL;
 455         }
 456
 457         if (tonga_smu_populate_single_firmware_entry(adev, UCODE_ID_CP_PFP,
 458                         &toc->entry[toc->num_entries++])) {
 459                 DRM_ERROR("Failed to get firmware entry for PFP\n");
 460                 return -EINVAL;
 461         }
 462
 463         if (tonga_smu_populate_single_firmware_entry(adev, UCODE_ID_CP_ME,
 464                         &toc->entry[toc->num_entries++])) {
 465                 DRM_ERROR("Failed to get firmware entry for ME\n");
 466                 return -EINVAL;
 467         }
 468
 469         if (tonga_smu_populate_single_firmware_entry(adev, UCODE_ID_CP_MEC,
 470                         &toc->entry[toc->num_entries++])) {
 471                 DRM_ERROR("Failed to get firmware entry for MEC\n");
 472                 return -EINVAL;
 473         }
 474
 475         if (tonga_smu_populate_single_firmware_entry(adev, UCODE_ID_CP_MEC_JT1,
 476                         &toc->entry[toc->num_entries++])) {
 477                 DRM_ERROR("Failed to get firmware entry for MEC_JT1\n");
 478                 return -EINVAL;
 479         }
 480
 481         if (tonga_smu_populate_single_firmware_entry(adev, UCODE_ID_CP_MEC_JT2,
 482                         &toc->entry[toc->num_entries++])) {
 483                 DRM_ERROR("Failed to get firmware entry for MEC_JT2\n");
 484                 return -EINVAL;
 485         }
 486
 487         if (tonga_smu_populate_single_firmware_entry(adev, UCODE_ID_SDMA0,
 488                         &toc->entry[toc->num_entries++])) {
 489                 DRM_ERROR("Failed to get firmware entry for SDMA0\n");
 490                 return -EINVAL;
 491         }
 492
 493         if (tonga_smu_populate_single_firmware_entry(adev, UCODE_ID_SDMA1,
 494                         &toc->entry[toc->num_entries++])) {
 495                 DRM_ERROR("Failed to get firmware entry for SDMA1\n");
 496                 return -EINVAL;
 497         }
 498
 499         tonga_send_msg_to_smc_with_parameter(adev, PPSMC_MSG_DRV_DRAM_ADDR_HI, private->header_addr_high);
 500         tonga_send_msg_to_smc_with_parameter(adev, PPSMC_MSG_DRV_DRAM_ADDR_LO, private->header_addr_low);
 501
 502         fw_to_load = UCODE_ID_RLC_G_MASK |
 503                         UCODE_ID_SDMA0_MASK |
 504                         UCODE_ID_SDMA1_MASK |
 505                         UCODE_ID_CP_CE_MASK |
 506                         UCODE_ID_CP_ME_MASK |
 507                         UCODE_ID_CP_PFP_MASK |
 508                         UCODE_ID_CP_MEC_MASK;
 509
 510         if (tonga_send_msg_to_smc_with_parameter_without_waiting(adev, PPSMC_MSG_LoadUcodes, fw_to_load)) {
 511                 DRM_ERROR("Fail to request SMU load ucode\n");
 512                 return -EINVAL;
 513         }
 514
 515         return 0;
 516 }
 517
 518 static uint32_t tonga_smu_get_mask_for_fw_type(uint32_t fw_type)
 519 {
 520         switch (fw_type) {
 521                 case AMDGPU_UCODE_ID_SDMA0:
 522                         return UCODE_ID_SDMA0_MASK;
 523                 case AMDGPU_UCODE_ID_SDMA1:
 524                         return UCODE_ID_SDMA1_MASK;
 525                 case AMDGPU_UCODE_ID_CP_CE:
 526                         return UCODE_ID_CP_CE_MASK;
 527                 case AMDGPU_UCODE_ID_CP_PFP:
 528                         return UCODE_ID_CP_PFP_MASK;
 529                 case AMDGPU_UCODE_ID_CP_ME:
 530                         return UCODE_ID_CP_ME_MASK;
 531                 case AMDGPU_UCODE_ID_CP_MEC1:
 532                         return UCODE_ID_CP_MEC_MASK;
 533                 case AMDGPU_UCODE_ID_CP_MEC2:
 534                         return UCODE_ID_CP_MEC_MASK;
 535                 case AMDGPU_UCODE_ID_RLC_G:
 536                         return UCODE_ID_RLC_G_MASK;
 537                 default:
 538                         DRM_ERROR("ucode type is out of range!\n");
 539                         return 0;
 540         }
 541 }
 542
 543 static int tonga_smu_check_fw_load_finish(struct amdgpu_device *adev,
 544                                         uint32_t fw_type)
 545 {
 546         uint32_t fw_mask = tonga_smu_get_mask_for_fw_type(fw_type);
 547         int i;
 548
 549         for (i = 0; i < adev->usec_timeout; i++) {
 550                 if (fw_mask == (RREG32_SMC(ixSOFT_REGISTERS_TABLE_28) & fw_mask))
 551                         break;
 552                 udelay(1);
 553         }
 554
 555         if (i == adev->usec_timeout) {
 556                 DRM_ERROR("check firmware loading failed\n");
 557                 return -EINVAL;
 558         }
 559
 560         return 0;
 561 }
 562
 563 static int tonga_smu_start_in_protection_mode(struct amdgpu_device *adev)
 564 {
 565         int result;
 566         uint32_t val;
 567         int i;
 568
 569         /* Assert reset */
 570         val = RREG32_SMC(ixSMC_SYSCON_RESET_CNTL);
 571         val = REG_SET_FIELD(val, SMC_SYSCON_RESET_CNTL, rst_reg, 1);
 572         WREG32_SMC(ixSMC_SYSCON_RESET_CNTL, val);
 573
 574         result = tonga_smu_upload_firmware_image(adev);
 575         if (result)
 576                 return result;
 577
 578         /* Clear status */
 579         WREG32_SMC(ixSMU_STATUS, 0);
 580
 581         /* Enable clock */
 582         val = RREG32_SMC(ixSMC_SYSCON_CLOCK_CNTL_0);
 583         val = REG_SET_FIELD(val, SMC_SYSCON_CLOCK_CNTL_0, ck_disable, 0);
 584         WREG32_SMC(ixSMC_SYSCON_CLOCK_CNTL_0, val);
 585
 586         /* De-assert reset */
 587         val = RREG32_SMC(ixSMC_SYSCON_RESET_CNTL);
 588         val = REG_SET_FIELD(val, SMC_SYSCON_RESET_CNTL, rst_reg, 0);
 589         WREG32_SMC(ixSMC_SYSCON_RESET_CNTL, val);
 590
 591         /* Set SMU Auto Start */
 592         val = RREG32_SMC(ixSMU_INPUT_DATA);
 593         val = REG_SET_FIELD(val, SMU_INPUT_DATA, AUTO_START, 1);
 594         WREG32_SMC(ixSMU_INPUT_DATA, val);
 595
 596         /* Clear firmware interrupt enable flag */
 597         WREG32_SMC(ixFIRMWARE_FLAGS, 0);
 598
 599         for (i = 0; i < adev->usec_timeout; i++) {
 600                 val = RREG32_SMC(ixRCU_UC_EVENTS);
 601                 if (REG_GET_FIELD(val, RCU_UC_EVENTS, INTERRUPTS_ENABLED))
 602                         break;
 603                 udelay(1);
 604         }
 605
 606         if (i == adev->usec_timeout) {
 607                 DRM_ERROR("Interrupt is not enabled by firmware\n");
 608                 return -EINVAL;
 609         }
 610
 611         /* Call Test SMU message with 0x20000 offset
 612          * to trigger SMU start
 613          */
 614         tonga_send_msg_to_smc_offset(adev);
 615
 616         /* Wait for done bit to be set */
 617         for (i = 0; i < adev->usec_timeout; i++) {
 618                 val = RREG32_SMC(ixSMU_STATUS);
 619                 if (REG_GET_FIELD(val, SMU_STATUS, SMU_DONE))
 620                         break;
 621                 udelay(1);
 622         }
 623
 624         if (i == adev->usec_timeout) {
 625                 DRM_ERROR("Timeout for SMU start\n");
 626                 return -EINVAL;
 627         }
 628
 629         /* Check pass/failed indicator */
 630         val = RREG32_SMC(ixSMU_STATUS);
 631         if (!REG_GET_FIELD(val, SMU_STATUS, SMU_PASS)) {
 632                 DRM_ERROR("SMU Firmware start failed\n");
 633                 return -EINVAL;
 634         }
 635
 636         /* Wait for firmware to initialize */
 637         for (i = 0; i < adev->usec_timeout; i++) {
 638                 val = RREG32_SMC(ixFIRMWARE_FLAGS);
 639                 if(REG_GET_FIELD(val, FIRMWARE_FLAGS, INTERRUPTS_ENABLED))
 640                         break;
 641                 udelay(1);
 642         }
 643
 644         if (i == adev->usec_timeout) {
 645                 DRM_ERROR("SMU firmware initialization failed\n");
 646                 return -EINVAL;
 647         }
 648
 649         return 0;
 650 }
 651
 652 static int tonga_smu_start_in_non_protection_mode(struct amdgpu_device *adev)
 653 {
 654         int i, result;
 655         uint32_t val;
 656
 657         /* wait for smc boot up */
 658         for (i = 0; i < adev->usec_timeout; i++) {
 659                 val = RREG32_SMC(ixRCU_UC_EVENTS);
 660                 val = REG_GET_FIELD(val, RCU_UC_EVENTS, boot_seq_done);
 661                 if (val)
 662                         break;
 663                 udelay(1);
 664         }
 665
 666         if (i == adev->usec_timeout) {
 667                 DRM_ERROR("SMC boot sequence is not completed\n");
 668                 return -EINVAL;
 669         }
 670
 671         /* Clear firmware interrupt enable flag */
 672         WREG32_SMC(ixFIRMWARE_FLAGS, 0);
 673
 674         /* Assert reset */
 675         val = RREG32_SMC(ixSMC_SYSCON_RESET_CNTL);
 676         val = REG_SET_FIELD(val, SMC_SYSCON_RESET_CNTL, rst_reg, 1);
 677         WREG32_SMC(ixSMC_SYSCON_RESET_CNTL, val);
 678
 679         result = tonga_smu_upload_firmware_image(adev);
 680         if (result)
 681                 return result;
 682
 683         /* Set smc instruct start point at 0x0 */
 684         tonga_program_jump_on_start(adev);
 685
 686         /* Enable clock */
 687         val = RREG32_SMC(ixSMC_SYSCON_CLOCK_CNTL_0);
 688         val = REG_SET_FIELD(val, SMC_SYSCON_CLOCK_CNTL_0, ck_disable, 0);
 689         WREG32_SMC(ixSMC_SYSCON_CLOCK_CNTL_0, val);
 690
 691         /* De-assert reset */
 692         val = RREG32_SMC(ixSMC_SYSCON_RESET_CNTL);
 693         val = REG_SET_FIELD(val, SMC_SYSCON_RESET_CNTL, rst_reg, 0);
 694         WREG32_SMC(ixSMC_SYSCON_RESET_CNTL, val);
 695
 696         /* Wait for firmware to initialize */
 697         for (i = 0; i < adev->usec_timeout; i++) {
 698                 val = RREG32_SMC(ixFIRMWARE_FLAGS);
 699                 if (REG_GET_FIELD(val, FIRMWARE_FLAGS, INTERRUPTS_ENABLED))
 700                         break;
 701                 udelay(1);
 702         }
 703
 704         if (i == adev->usec_timeout) {
 705                 DRM_ERROR("Timeout for SMC firmware initialization\n");
 706                 return -EINVAL;
 707         }
 708
 709         return 0;
 710 }
 711
 712 int tonga_smu_start(struct amdgpu_device *adev)
 713 {
 714         int result;
 715         uint32_t val;
 716
 717         if (!tonga_is_smc_ram_running(adev)) {
 718                 val = RREG32_SMC(ixSMU_FIRMWARE);
 719                 if (!REG_GET_FIELD(val, SMU_FIRMWARE, SMU_MODE)) {
 720                         result = tonga_smu_start_in_non_protection_mode(adev);
 721                         if (result)
 722                                 return result;
 723                 } else {
 724                         result = tonga_smu_start_in_protection_mode(adev);
 725                         if (result)
 726                                 return result;
 727                 }
 728         }
 729
 730         return tonga_smu_request_load_fw(adev);
 731 }
 732
 733 static const struct amdgpu_smumgr_funcs tonga_smumgr_funcs = {
 734         .check_fw_load_finish = tonga_smu_check_fw_load_finish,
 735         .request_smu_load_fw = NULL,
 736         .request_smu_specific_fw = NULL,
 737 };
 738
 739 int tonga_smu_init(struct amdgpu_device *adev)
 740 {
 741         struct tonga_smu_private_data *private;
 742         uint32_t image_size = ((sizeof(struct SMU_DRAMData_TOC) / 4096) + 1) * 4096;
 743         uint32_t smu_internal_buffer_size = 200*4096;
 744         struct amdgpu_bo **toc_buf = &adev->smu.toc_buf;
 745         struct amdgpu_bo **smu_buf = &adev->smu.smu_buf;
 746         uint64_t mc_addr;
 747         void *toc_buf_ptr;
 748         void *smu_buf_ptr;
 749         int ret;
 750
 751         private = kzalloc(sizeof(struct tonga_smu_private_data), GFP_KERNEL);
 752         if (NULL == private)
 753                 return -ENOMEM;
 754
 755         /* allocate firmware buffers */
 756         if (adev->firmware.smu_load)
 757                 amdgpu_ucode_init_bo(adev);
 758
 759         adev->smu.priv = private;
 760         adev->smu.fw_flags = 0;
 761
 762         /* Allocate FW image data structure and header buffer */
 763         ret = amdgpu_bo_create(adev, image_size, PAGE_SIZE,
 764                                true, AMDGPU_GEM_DOMAIN_VRAM,
 765                                AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
 766                                NULL, NULL, toc_buf);
 767         if (ret) {
 768                 DRM_ERROR("Failed to allocate memory for TOC buffer\n");
 769                 return -ENOMEM;
 770         }
 771
 772         /* Allocate buffer for SMU internal buffer */
 773         ret = amdgpu_bo_create(adev, smu_internal_buffer_size, PAGE_SIZE,
 774                                true, AMDGPU_GEM_DOMAIN_VRAM,
 775                                AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
 776                                NULL, NULL, smu_buf);
 777         if (ret) {
 778                 DRM_ERROR("Failed to allocate memory for SMU internal buffer\n");
 779                 return -ENOMEM;
 780         }
 781
 782         /* Retrieve GPU address for header buffer and internal buffer */
 783         ret = amdgpu_bo_reserve(adev->smu.toc_buf, false);
 784         if (ret) {
 785                 amdgpu_bo_unref(&adev->smu.toc_buf);
 786                 DRM_ERROR("Failed to reserve the TOC buffer\n");
 787                 return -EINVAL;
 788         }
 789
 790         ret = amdgpu_bo_pin(adev->smu.toc_buf, AMDGPU_GEM_DOMAIN_VRAM, &mc_addr);
 791         if (ret) {
 792                 amdgpu_bo_unreserve(adev->smu.toc_buf);
 793                 amdgpu_bo_unref(&adev->smu.toc_buf);
 794                 DRM_ERROR("Failed to pin the TOC buffer\n");
 795                 return -EINVAL;
 796         }
 797
 798         ret = amdgpu_bo_kmap(*toc_buf, &toc_buf_ptr);
 799         if (ret) {
 800                 amdgpu_bo_unreserve(adev->smu.toc_buf);
 801                 amdgpu_bo_unref(&adev->smu.toc_buf);
 802                 DRM_ERROR("Failed to map the TOC buffer\n");
 803                 return -EINVAL;
 804         }
 805
 806         amdgpu_bo_unreserve(adev->smu.toc_buf);
 807         private->header_addr_low = lower_32_bits(mc_addr);
 808         private->header_addr_high = upper_32_bits(mc_addr);
 809         private->header = toc_buf_ptr;
 810
 811         ret = amdgpu_bo_reserve(adev->smu.smu_buf, false);
 812         if (ret) {
 813                 amdgpu_bo_unref(&adev->smu.smu_buf);
 814                 amdgpu_bo_unref(&adev->smu.toc_buf);
 815                 DRM_ERROR("Failed to reserve the SMU internal buffer\n");
 816                 return -EINVAL;
 817         }
 818
 819         ret = amdgpu_bo_pin(adev->smu.smu_buf, AMDGPU_GEM_DOMAIN_VRAM, &mc_addr);
 820         if (ret) {
 821                 amdgpu_bo_unreserve(adev->smu.smu_buf);
 822                 amdgpu_bo_unref(&adev->smu.smu_buf);
 823                 amdgpu_bo_unref(&adev->smu.toc_buf);
 824                 DRM_ERROR("Failed to pin the SMU internal buffer\n");
 825                 return -EINVAL;
 826         }
 827
 828         ret = amdgpu_bo_kmap(*smu_buf, &smu_buf_ptr);
 829         if (ret) {
 830                 amdgpu_bo_unreserve(adev->smu.smu_buf);
 831                 amdgpu_bo_unref(&adev->smu.smu_buf);
 832                 amdgpu_bo_unref(&adev->smu.toc_buf);
 833                 DRM_ERROR("Failed to map the SMU internal buffer\n");
 834                 return -EINVAL;
 835         }
 836
 837         amdgpu_bo_unreserve(adev->smu.smu_buf);
 838         private->smu_buffer_addr_low = lower_32_bits(mc_addr);
 839         private->smu_buffer_addr_high = upper_32_bits(mc_addr);
 840
 841         adev->smu.smumgr_funcs = &tonga_smumgr_funcs;
 842
 843         return 0;
 844 }
 845
 846 int tonga_smu_fini(struct amdgpu_device *adev)
 847 {
 848         amdgpu_bo_unref(&adev->smu.toc_buf);
 849         amdgpu_bo_unref(&adev->smu.smu_buf);
 850         kfree(adev->smu.priv);
 851         adev->smu.priv = NULL;
 852         if (adev->firmware.fw_buf)
 853                 amdgpu_ucode_fini_bo(adev);
 854
 855         return 0;
 856 }