1 /* 2 * Copyright 2019 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 * Authors: AMD 23 * 24 */ 25 26 #ifndef _DMUB_SRV_H_ 27 #define _DMUB_SRV_H_ 28 29 /** 30 * DOC: DMUB interface and operation 31 * 32 * DMUB is the interface to the display DMCUB microcontroller on DCN hardware. 33 * It delegates hardware initialization and command submission to the 34 * microcontroller. DMUB is the shortname for DMCUB. 35 * 36 * This interface is not thread-safe. Ensure that all access to the interface 37 * is properly synchronized by the caller. 38 * 39 * Initialization and usage of the DMUB service should be done in the 40 * steps given below: 41 * 42 * 1. dmub_srv_create() 43 * 2. dmub_srv_has_hw_support() 44 * 3. dmub_srv_calc_region_info() 45 * 4. dmub_srv_hw_init() 46 * 47 * The call to dmub_srv_create() is required to use the server. 48 * 49 * The calls to dmub_srv_has_hw_support() and dmub_srv_calc_region_info() 50 * are helpers to query cache window size and allocate framebuffer(s) 51 * for the cache windows. 52 * 53 * The call to dmub_srv_hw_init() programs the DMCUB registers to prepare 54 * for command submission. Commands can be queued via dmub_srv_cmd_queue() 55 * and executed via dmub_srv_cmd_execute(). 56 * 57 * If the queue is full the dmub_srv_wait_for_idle() call can be used to 58 * wait until the queue has been cleared. 59 * 60 * Destroying the DMUB service can be done by calling dmub_srv_destroy(). 61 * This does not clear DMUB hardware state, only software state. 62 * 63 * The interface is intended to be standalone and should not depend on any 64 * other component within DAL. 65 */ 66 67 #include "inc/dmub_cmd.h" 68 69 #if defined(__cplusplus) 70 extern "C" { 71 #endif 72 73 /* Forward declarations */ 74 struct dmub_srv; 75 struct dmub_srv_common_regs; 76 77 struct dmcub_trace_buf_entry; 78 79 /* enum dmub_status - return code for dmcub functions */ 80 enum dmub_status { 81 DMUB_STATUS_OK = 0, 82 DMUB_STATUS_NO_CTX, 83 DMUB_STATUS_QUEUE_FULL, 84 DMUB_STATUS_TIMEOUT, 85 DMUB_STATUS_INVALID, 86 }; 87 88 /* enum dmub_asic - dmub asic identifier */ 89 enum dmub_asic { 90 DMUB_ASIC_NONE = 0, 91 DMUB_ASIC_DCN20, 92 DMUB_ASIC_DCN21, 93 DMUB_ASIC_DCN30, 94 DMUB_ASIC_DCN301, 95 DMUB_ASIC_DCN302, 96 DMUB_ASIC_MAX, 97 }; 98 99 /* enum dmub_window_id - dmub window identifier */ 100 enum dmub_window_id { 101 DMUB_WINDOW_0_INST_CONST = 0, 102 DMUB_WINDOW_1_STACK, 103 DMUB_WINDOW_2_BSS_DATA, 104 DMUB_WINDOW_3_VBIOS, 105 DMUB_WINDOW_4_MAILBOX, 106 DMUB_WINDOW_5_TRACEBUFF, 107 DMUB_WINDOW_6_FW_STATE, 108 DMUB_WINDOW_7_SCRATCH_MEM, 109 DMUB_WINDOW_TOTAL, 110 }; 111 112 /* enum dmub_notification_type - dmub outbox notification identifier */ 113 enum dmub_notification_type { 114 DMUB_NOTIFICATION_NO_DATA = 0, 115 DMUB_NOTIFICATION_AUX_REPLY, 116 DMUB_NOTIFICATION_HPD, 117 DMUB_NOTIFICATION_HPD_IRQ, 118 DMUB_NOTIFICATION_MAX 119 }; 120 121 /** 122 * struct dmub_region - dmub hw memory region 123 * @base: base address for region, must be 256 byte aligned 124 * @top: top address for region 125 */ 126 struct dmub_region { 127 uint32_t base; 128 uint32_t top; 129 }; 130 131 /** 132 * struct dmub_window - dmub hw cache window 133 * @off: offset to the fb memory in gpu address space 134 * @r: region in uc address space for cache window 135 */ 136 struct dmub_window { 137 union dmub_addr offset; 138 struct dmub_region region; 139 }; 140 141 /** 142 * struct dmub_fb - defines a dmub framebuffer memory region 143 * @cpu_addr: cpu virtual address for the region, NULL if invalid 144 * @gpu_addr: gpu virtual address for the region, NULL if invalid 145 * @size: size of the region in bytes, zero if invalid 146 */ 147 struct dmub_fb { 148 void *cpu_addr; 149 uint64_t gpu_addr; 150 uint32_t size; 151 }; 152 153 /** 154 * struct dmub_srv_region_params - params used for calculating dmub regions 155 * @inst_const_size: size of the fw inst const section 156 * @bss_data_size: size of the fw bss data section 157 * @vbios_size: size of the vbios data 158 * @fw_bss_data: raw firmware bss data section 159 */ 160 struct dmub_srv_region_params { 161 uint32_t inst_const_size; 162 uint32_t bss_data_size; 163 uint32_t vbios_size; 164 const uint8_t *fw_inst_const; 165 const uint8_t *fw_bss_data; 166 }; 167 168 /** 169 * struct dmub_srv_region_info - output region info from the dmub service 170 * @fb_size: required minimum fb size for all regions, aligned to 4096 bytes 171 * @num_regions: number of regions used by the dmub service 172 * @regions: region info 173 * 174 * The regions are aligned such that they can be all placed within the 175 * same framebuffer but they can also be placed into different framebuffers. 176 * 177 * The size of each region can be calculated by the caller: 178 * size = reg.top - reg.base 179 * 180 * Care must be taken when performing custom allocations to ensure that each 181 * region base address is 256 byte aligned. 182 */ 183 struct dmub_srv_region_info { 184 uint32_t fb_size; 185 uint8_t num_regions; 186 struct dmub_region regions[DMUB_WINDOW_TOTAL]; 187 }; 188 189 /** 190 * struct dmub_srv_fb_params - parameters used for driver fb setup 191 * @region_info: region info calculated by dmub service 192 * @cpu_addr: base cpu address for the framebuffer 193 * @gpu_addr: base gpu virtual address for the framebuffer 194 */ 195 struct dmub_srv_fb_params { 196 const struct dmub_srv_region_info *region_info; 197 void *cpu_addr; 198 uint64_t gpu_addr; 199 }; 200 201 /** 202 * struct dmub_srv_fb_info - output fb info from the dmub service 203 * @num_fbs: number of required dmub framebuffers 204 * @fbs: fb data for each region 205 * 206 * Output from the dmub service helper that can be used by the 207 * driver to prepare dmub_fb that can be passed into the dmub 208 * hw init service. 209 * 210 * Assumes that all regions are within the same framebuffer 211 * and have been setup according to the region_info generated 212 * by the dmub service. 213 */ 214 struct dmub_srv_fb_info { 215 uint8_t num_fb; 216 struct dmub_fb fb[DMUB_WINDOW_TOTAL]; 217 }; 218 219 /** 220 * struct dmub_srv_base_funcs - Driver specific base callbacks 221 */ 222 struct dmub_srv_base_funcs { 223 /** 224 * @reg_read: 225 * 226 * Hook for reading a register. 227 * 228 * Return: The 32-bit register value from the given address. 229 */ 230 uint32_t (*reg_read)(void *ctx, uint32_t address); 231 232 /** 233 * @reg_write: 234 * 235 * Hook for writing a value to the register specified by address. 236 */ 237 void (*reg_write)(void *ctx, uint32_t address, uint32_t value); 238 }; 239 240 /** 241 * struct dmub_srv_hw_funcs - hardware sequencer funcs for dmub 242 */ 243 struct dmub_srv_hw_funcs { 244 /* private: internal use only */ 245 246 void (*init)(struct dmub_srv *dmub); 247 248 void (*reset)(struct dmub_srv *dmub); 249 250 void (*reset_release)(struct dmub_srv *dmub); 251 252 void (*backdoor_load)(struct dmub_srv *dmub, 253 const struct dmub_window *cw0, 254 const struct dmub_window *cw1); 255 256 void (*setup_windows)(struct dmub_srv *dmub, 257 const struct dmub_window *cw2, 258 const struct dmub_window *cw3, 259 const struct dmub_window *cw4, 260 const struct dmub_window *cw5, 261 const struct dmub_window *cw6); 262 263 void (*setup_mailbox)(struct dmub_srv *dmub, 264 const struct dmub_region *inbox1); 265 266 uint32_t (*get_inbox1_rptr)(struct dmub_srv *dmub); 267 268 void (*set_inbox1_wptr)(struct dmub_srv *dmub, uint32_t wptr_offset); 269 270 void (*setup_out_mailbox)(struct dmub_srv *dmub, 271 const struct dmub_region *outbox1); 272 273 uint32_t (*get_outbox1_wptr)(struct dmub_srv *dmub); 274 275 void (*set_outbox1_rptr)(struct dmub_srv *dmub, uint32_t rptr_offset); 276 277 void (*setup_outbox0)(struct dmub_srv *dmub, 278 const struct dmub_region *outbox0); 279 280 uint32_t (*get_outbox0_wptr)(struct dmub_srv *dmub); 281 282 void (*set_outbox0_rptr)(struct dmub_srv *dmub, uint32_t rptr_offset); 283 284 uint32_t (*emul_get_inbox1_rptr)(struct dmub_srv *dmub); 285 286 void (*emul_set_inbox1_wptr)(struct dmub_srv *dmub, uint32_t wptr_offset); 287 288 bool (*is_supported)(struct dmub_srv *dmub); 289 290 bool (*is_hw_init)(struct dmub_srv *dmub); 291 292 bool (*is_phy_init)(struct dmub_srv *dmub); 293 void (*enable_dmub_boot_options)(struct dmub_srv *dmub); 294 295 void (*skip_dmub_panel_power_sequence)(struct dmub_srv *dmub, bool skip); 296 297 union dmub_fw_boot_status (*get_fw_status)(struct dmub_srv *dmub); 298 299 300 void (*set_gpint)(struct dmub_srv *dmub, 301 union dmub_gpint_data_register reg); 302 303 bool (*is_gpint_acked)(struct dmub_srv *dmub, 304 union dmub_gpint_data_register reg); 305 306 uint32_t (*get_gpint_response)(struct dmub_srv *dmub); 307 308 }; 309 310 /** 311 * struct dmub_srv_create_params - params for dmub service creation 312 * @base_funcs: driver supplied base routines 313 * @hw_funcs: optional overrides for hw funcs 314 * @user_ctx: context data for callback funcs 315 * @asic: driver supplied asic 316 * @fw_version: the current firmware version, if any 317 * @is_virtual: false for hw support only 318 */ 319 struct dmub_srv_create_params { 320 struct dmub_srv_base_funcs funcs; 321 struct dmub_srv_hw_funcs *hw_funcs; 322 void *user_ctx; 323 enum dmub_asic asic; 324 uint32_t fw_version; 325 bool is_virtual; 326 }; 327 328 /* 329 * struct dmub_srv_hw_params - params for dmub hardware initialization 330 * @fb: framebuffer info for each region 331 * @fb_base: base of the framebuffer aperture 332 * @fb_offset: offset of the framebuffer aperture 333 * @psp_version: psp version to pass for DMCU init 334 * @load_inst_const: true if DMUB should load inst const fw 335 */ 336 struct dmub_srv_hw_params { 337 struct dmub_fb *fb[DMUB_WINDOW_TOTAL]; 338 uint64_t fb_base; 339 uint64_t fb_offset; 340 uint32_t psp_version; 341 bool load_inst_const; 342 bool skip_panel_power_sequence; 343 }; 344 345 /** 346 * struct dmub_srv - software state for dmcub 347 * @asic: dmub asic identifier 348 * @user_ctx: user provided context for the dmub_srv 349 * @fw_version: the current firmware version, if any 350 * @is_virtual: false if hardware support only 351 * @fw_state: dmub firmware state pointer 352 */ 353 struct dmub_srv { 354 enum dmub_asic asic; 355 void *user_ctx; 356 uint32_t fw_version; 357 bool is_virtual; 358 struct dmub_fb scratch_mem_fb; 359 volatile const struct dmub_fw_state *fw_state; 360 361 /* private: internal use only */ 362 const struct dmub_srv_common_regs *regs; 363 364 struct dmub_srv_base_funcs funcs; 365 struct dmub_srv_hw_funcs hw_funcs; 366 struct dmub_rb inbox1_rb; 367 /** 368 * outbox1_rb is accessed without locks (dal & dc) 369 * and to be used only in dmub_srv_stat_get_notification() 370 */ 371 struct dmub_rb outbox1_rb; 372 373 struct dmub_rb outbox0_rb; 374 375 bool sw_init; 376 bool hw_init; 377 378 uint64_t fb_base; 379 uint64_t fb_offset; 380 uint32_t psp_version; 381 382 /* Feature capabilities reported by fw */ 383 struct dmub_feature_caps feature_caps; 384 }; 385 386 /** 387 * struct dmub_notification - dmub notification data 388 * @type: dmub notification type 389 * @link_index: link index to identify aux connection 390 * @result: USB4 status returned from dmub 391 * @pending_notification: Indicates there are other pending notifications 392 * @aux_reply: aux reply 393 * @hpd_status: hpd status 394 */ 395 struct dmub_notification { 396 enum dmub_notification_type type; 397 uint8_t link_index; 398 uint8_t result; 399 bool pending_notification; 400 union { 401 struct aux_reply_data aux_reply; 402 enum dp_hpd_status hpd_status; 403 }; 404 }; 405 406 /** 407 * DMUB firmware version helper macro - useful for checking if the version 408 * of a firmware to know if feature or functionality is supported or present. 409 */ 410 #define DMUB_FW_VERSION(major, minor, revision) \ 411 ((((major) & 0xFF) << 24) | (((minor) & 0xFF) << 16) | ((revision) & 0xFFFF)) 412 413 /** 414 * dmub_srv_create() - creates the DMUB service. 415 * @dmub: the dmub service 416 * @params: creation parameters for the service 417 * 418 * Return: 419 * DMUB_STATUS_OK - success 420 * DMUB_STATUS_INVALID - unspecified error 421 */ 422 enum dmub_status dmub_srv_create(struct dmub_srv *dmub, 423 const struct dmub_srv_create_params *params); 424 425 /** 426 * dmub_srv_destroy() - destroys the DMUB service. 427 * @dmub: the dmub service 428 */ 429 void dmub_srv_destroy(struct dmub_srv *dmub); 430 431 /** 432 * dmub_srv_calc_region_info() - retreives region info from the dmub service 433 * @dmub: the dmub service 434 * @params: parameters used to calculate region locations 435 * @info_out: the output region info from dmub 436 * 437 * Calculates the base and top address for all relevant dmub regions 438 * using the parameters given (if any). 439 * 440 * Return: 441 * DMUB_STATUS_OK - success 442 * DMUB_STATUS_INVALID - unspecified error 443 */ 444 enum dmub_status 445 dmub_srv_calc_region_info(struct dmub_srv *dmub, 446 const struct dmub_srv_region_params *params, 447 struct dmub_srv_region_info *out); 448 449 /** 450 * dmub_srv_calc_region_info() - retreives fb info from the dmub service 451 * @dmub: the dmub service 452 * @params: parameters used to calculate fb locations 453 * @info_out: the output fb info from dmub 454 * 455 * Calculates the base and top address for all relevant dmub regions 456 * using the parameters given (if any). 457 * 458 * Return: 459 * DMUB_STATUS_OK - success 460 * DMUB_STATUS_INVALID - unspecified error 461 */ 462 enum dmub_status dmub_srv_calc_fb_info(struct dmub_srv *dmub, 463 const struct dmub_srv_fb_params *params, 464 struct dmub_srv_fb_info *out); 465 466 /** 467 * dmub_srv_has_hw_support() - returns hw support state for dmcub 468 * @dmub: the dmub service 469 * @is_supported: hw support state 470 * 471 * Queries the hardware for DMCUB support and returns the result. 472 * 473 * Can be called before dmub_srv_hw_init(). 474 * 475 * Return: 476 * DMUB_STATUS_OK - success 477 * DMUB_STATUS_INVALID - unspecified error 478 */ 479 enum dmub_status dmub_srv_has_hw_support(struct dmub_srv *dmub, 480 bool *is_supported); 481 482 /** 483 * dmub_srv_is_hw_init() - returns hardware init state 484 * 485 * Return: 486 * DMUB_STATUS_OK - success 487 * DMUB_STATUS_INVALID - unspecified error 488 */ 489 enum dmub_status dmub_srv_is_hw_init(struct dmub_srv *dmub, bool *is_hw_init); 490 491 /** 492 * dmub_srv_hw_init() - initializes the underlying DMUB hardware 493 * @dmub: the dmub service 494 * @params: params for hardware initialization 495 * 496 * Resets the DMUB hardware and performs backdoor loading of the 497 * required cache regions based on the input framebuffer regions. 498 * 499 * Return: 500 * DMUB_STATUS_OK - success 501 * DMUB_STATUS_NO_CTX - dmcub context not initialized 502 * DMUB_STATUS_INVALID - unspecified error 503 */ 504 enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub, 505 const struct dmub_srv_hw_params *params); 506 507 /** 508 * dmub_srv_hw_reset() - puts the DMUB hardware in reset state if initialized 509 * @dmub: the dmub service 510 * 511 * Before destroying the DMUB service or releasing the backing framebuffer 512 * memory we'll need to put the DMCUB into reset first. 513 * 514 * A subsequent call to dmub_srv_hw_init() will re-enable the DMCUB. 515 * 516 * Return: 517 * DMUB_STATUS_OK - success 518 * DMUB_STATUS_INVALID - unspecified error 519 */ 520 enum dmub_status dmub_srv_hw_reset(struct dmub_srv *dmub); 521 522 /** 523 * dmub_srv_cmd_queue() - queues a command to the DMUB 524 * @dmub: the dmub service 525 * @cmd: the command to queue 526 * 527 * Queues a command to the DMUB service but does not begin execution 528 * immediately. 529 * 530 * Return: 531 * DMUB_STATUS_OK - success 532 * DMUB_STATUS_QUEUE_FULL - no remaining room in queue 533 * DMUB_STATUS_INVALID - unspecified error 534 */ 535 enum dmub_status dmub_srv_cmd_queue(struct dmub_srv *dmub, 536 const union dmub_rb_cmd *cmd); 537 538 /** 539 * dmub_srv_cmd_execute() - Executes a queued sequence to the dmub 540 * @dmub: the dmub service 541 * 542 * Begins execution of queued commands on the dmub. 543 * 544 * Return: 545 * DMUB_STATUS_OK - success 546 * DMUB_STATUS_INVALID - unspecified error 547 */ 548 enum dmub_status dmub_srv_cmd_execute(struct dmub_srv *dmub); 549 550 /** 551 * dmub_srv_wait_for_auto_load() - Waits for firmware auto load to complete 552 * @dmub: the dmub service 553 * @timeout_us: the maximum number of microseconds to wait 554 * 555 * Waits until firmware has been autoloaded by the DMCUB. The maximum 556 * wait time is given in microseconds to prevent spinning forever. 557 * 558 * On ASICs without firmware autoload support this function will return 559 * immediately. 560 * 561 * Return: 562 * DMUB_STATUS_OK - success 563 * DMUB_STATUS_TIMEOUT - wait for phy init timed out 564 * DMUB_STATUS_INVALID - unspecified error 565 */ 566 enum dmub_status dmub_srv_wait_for_auto_load(struct dmub_srv *dmub, 567 uint32_t timeout_us); 568 569 /** 570 * dmub_srv_wait_for_phy_init() - Waits for DMUB PHY init to complete 571 * @dmub: the dmub service 572 * @timeout_us: the maximum number of microseconds to wait 573 * 574 * Waits until the PHY has been initialized by the DMUB. The maximum 575 * wait time is given in microseconds to prevent spinning forever. 576 * 577 * On ASICs without PHY init support this function will return 578 * immediately. 579 * 580 * Return: 581 * DMUB_STATUS_OK - success 582 * DMUB_STATUS_TIMEOUT - wait for phy init timed out 583 * DMUB_STATUS_INVALID - unspecified error 584 */ 585 enum dmub_status dmub_srv_wait_for_phy_init(struct dmub_srv *dmub, 586 uint32_t timeout_us); 587 588 /** 589 * dmub_srv_wait_for_idle() - Waits for the DMUB to be idle 590 * @dmub: the dmub service 591 * @timeout_us: the maximum number of microseconds to wait 592 * 593 * Waits until the DMUB buffer is empty and all commands have 594 * finished processing. The maximum wait time is given in 595 * microseconds to prevent spinning forever. 596 * 597 * Return: 598 * DMUB_STATUS_OK - success 599 * DMUB_STATUS_TIMEOUT - wait for buffer to flush timed out 600 * DMUB_STATUS_INVALID - unspecified error 601 */ 602 enum dmub_status dmub_srv_wait_for_idle(struct dmub_srv *dmub, 603 uint32_t timeout_us); 604 605 /** 606 * dmub_srv_send_gpint_command() - Sends a GPINT based command. 607 * @dmub: the dmub service 608 * @command_code: the command code to send 609 * @param: the command parameter to send 610 * @timeout_us: the maximum number of microseconds to wait 611 * 612 * Sends a command via the general purpose interrupt (GPINT). 613 * Waits for the number of microseconds specified by timeout_us 614 * for the command ACK before returning. 615 * 616 * Can be called after software initialization. 617 * 618 * Return: 619 * DMUB_STATUS_OK - success 620 * DMUB_STATUS_TIMEOUT - wait for ACK timed out 621 * DMUB_STATUS_INVALID - unspecified error 622 */ 623 enum dmub_status 624 dmub_srv_send_gpint_command(struct dmub_srv *dmub, 625 enum dmub_gpint_command command_code, 626 uint16_t param, uint32_t timeout_us); 627 628 /** 629 * dmub_srv_get_gpint_response() - Queries the GPINT response. 630 * @dmub: the dmub service 631 * @response: the response for the last GPINT 632 * 633 * Returns the response code for the last GPINT interrupt. 634 * 635 * Can be called after software initialization. 636 * 637 * Return: 638 * DMUB_STATUS_OK - success 639 * DMUB_STATUS_INVALID - unspecified error 640 */ 641 enum dmub_status dmub_srv_get_gpint_response(struct dmub_srv *dmub, 642 uint32_t *response); 643 644 /** 645 * dmub_flush_buffer_mem() - Read back entire frame buffer region. 646 * This ensures that the write from x86 has been flushed and will not 647 * hang the DMCUB. 648 * @fb: frame buffer to flush 649 * 650 * Can be called after software initialization. 651 */ 652 void dmub_flush_buffer_mem(const struct dmub_fb *fb); 653 654 /** 655 * dmub_srv_get_fw_boot_status() - Returns the DMUB boot status bits. 656 * 657 * @dmub: the dmub service 658 * @status: out pointer for firmware status 659 * 660 * Return: 661 * DMUB_STATUS_OK - success 662 * DMUB_STATUS_INVALID - unspecified error, unsupported 663 */ 664 enum dmub_status dmub_srv_get_fw_boot_status(struct dmub_srv *dmub, 665 union dmub_fw_boot_status *status); 666 667 enum dmub_status dmub_srv_cmd_with_reply_data(struct dmub_srv *dmub, 668 union dmub_rb_cmd *cmd); 669 670 bool dmub_srv_get_outbox0_msg(struct dmub_srv *dmub, struct dmcub_trace_buf_entry *entry); 671 672 #if defined(__cplusplus) 673 } 674 #endif 675 676 #endif /* _DMUB_SRV_H_ */ 677