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 struct dmub_srv_dcn31_regs; 77 78 struct dmcub_trace_buf_entry; 79 80 /* enum dmub_status - return code for dmcub functions */ 81 enum dmub_status { 82 DMUB_STATUS_OK = 0, 83 DMUB_STATUS_NO_CTX, 84 DMUB_STATUS_QUEUE_FULL, 85 DMUB_STATUS_TIMEOUT, 86 DMUB_STATUS_INVALID, 87 }; 88 89 /* enum dmub_asic - dmub asic identifier */ 90 enum dmub_asic { 91 DMUB_ASIC_NONE = 0, 92 DMUB_ASIC_DCN20, 93 DMUB_ASIC_DCN21, 94 DMUB_ASIC_DCN30, 95 DMUB_ASIC_DCN301, 96 DMUB_ASIC_DCN302, 97 DMUB_ASIC_DCN303, 98 DMUB_ASIC_DCN31, 99 DMUB_ASIC_MAX, 100 }; 101 102 /* enum dmub_window_id - dmub window identifier */ 103 enum dmub_window_id { 104 DMUB_WINDOW_0_INST_CONST = 0, 105 DMUB_WINDOW_1_STACK, 106 DMUB_WINDOW_2_BSS_DATA, 107 DMUB_WINDOW_3_VBIOS, 108 DMUB_WINDOW_4_MAILBOX, 109 DMUB_WINDOW_5_TRACEBUFF, 110 DMUB_WINDOW_6_FW_STATE, 111 DMUB_WINDOW_7_SCRATCH_MEM, 112 DMUB_WINDOW_TOTAL, 113 }; 114 115 /* enum dmub_notification_type - dmub outbox notification identifier */ 116 enum dmub_notification_type { 117 DMUB_NOTIFICATION_NO_DATA = 0, 118 DMUB_NOTIFICATION_AUX_REPLY, 119 DMUB_NOTIFICATION_HPD, 120 DMUB_NOTIFICATION_HPD_IRQ, 121 DMUB_NOTIFICATION_MAX 122 }; 123 124 /** 125 * struct dmub_region - dmub hw memory region 126 * @base: base address for region, must be 256 byte aligned 127 * @top: top address for region 128 */ 129 struct dmub_region { 130 uint32_t base; 131 uint32_t top; 132 }; 133 134 /** 135 * struct dmub_window - dmub hw cache window 136 * @off: offset to the fb memory in gpu address space 137 * @r: region in uc address space for cache window 138 */ 139 struct dmub_window { 140 union dmub_addr offset; 141 struct dmub_region region; 142 }; 143 144 /** 145 * struct dmub_fb - defines a dmub framebuffer memory region 146 * @cpu_addr: cpu virtual address for the region, NULL if invalid 147 * @gpu_addr: gpu virtual address for the region, NULL if invalid 148 * @size: size of the region in bytes, zero if invalid 149 */ 150 struct dmub_fb { 151 void *cpu_addr; 152 uint64_t gpu_addr; 153 uint32_t size; 154 }; 155 156 /** 157 * struct dmub_srv_region_params - params used for calculating dmub regions 158 * @inst_const_size: size of the fw inst const section 159 * @bss_data_size: size of the fw bss data section 160 * @vbios_size: size of the vbios data 161 * @fw_bss_data: raw firmware bss data section 162 */ 163 struct dmub_srv_region_params { 164 uint32_t inst_const_size; 165 uint32_t bss_data_size; 166 uint32_t vbios_size; 167 const uint8_t *fw_inst_const; 168 const uint8_t *fw_bss_data; 169 }; 170 171 /** 172 * struct dmub_srv_region_info - output region info from the dmub service 173 * @fb_size: required minimum fb size for all regions, aligned to 4096 bytes 174 * @num_regions: number of regions used by the dmub service 175 * @regions: region info 176 * 177 * The regions are aligned such that they can be all placed within the 178 * same framebuffer but they can also be placed into different framebuffers. 179 * 180 * The size of each region can be calculated by the caller: 181 * size = reg.top - reg.base 182 * 183 * Care must be taken when performing custom allocations to ensure that each 184 * region base address is 256 byte aligned. 185 */ 186 struct dmub_srv_region_info { 187 uint32_t fb_size; 188 uint8_t num_regions; 189 struct dmub_region regions[DMUB_WINDOW_TOTAL]; 190 }; 191 192 /** 193 * struct dmub_srv_fb_params - parameters used for driver fb setup 194 * @region_info: region info calculated by dmub service 195 * @cpu_addr: base cpu address for the framebuffer 196 * @gpu_addr: base gpu virtual address for the framebuffer 197 */ 198 struct dmub_srv_fb_params { 199 const struct dmub_srv_region_info *region_info; 200 void *cpu_addr; 201 uint64_t gpu_addr; 202 }; 203 204 /** 205 * struct dmub_srv_fb_info - output fb info from the dmub service 206 * @num_fbs: number of required dmub framebuffers 207 * @fbs: fb data for each region 208 * 209 * Output from the dmub service helper that can be used by the 210 * driver to prepare dmub_fb that can be passed into the dmub 211 * hw init service. 212 * 213 * Assumes that all regions are within the same framebuffer 214 * and have been setup according to the region_info generated 215 * by the dmub service. 216 */ 217 struct dmub_srv_fb_info { 218 uint8_t num_fb; 219 struct dmub_fb fb[DMUB_WINDOW_TOTAL]; 220 }; 221 222 /* 223 * struct dmub_srv_hw_params - params for dmub hardware initialization 224 * @fb: framebuffer info for each region 225 * @fb_base: base of the framebuffer aperture 226 * @fb_offset: offset of the framebuffer aperture 227 * @psp_version: psp version to pass for DMCU init 228 * @load_inst_const: true if DMUB should load inst const fw 229 */ 230 struct dmub_srv_hw_params { 231 struct dmub_fb *fb[DMUB_WINDOW_TOTAL]; 232 uint64_t fb_base; 233 uint64_t fb_offset; 234 uint32_t psp_version; 235 bool load_inst_const; 236 bool skip_panel_power_sequence; 237 bool disable_z10; 238 }; 239 240 /** 241 * struct dmub_diagnostic_data - Diagnostic data retrieved from DMCUB for 242 * debugging purposes, including logging, crash analysis, etc. 243 */ 244 struct dmub_diagnostic_data { 245 uint32_t dmcub_version; 246 uint32_t scratch[16]; 247 uint32_t pc; 248 uint32_t undefined_address_fault_addr; 249 uint32_t inst_fetch_fault_addr; 250 uint32_t data_write_fault_addr; 251 uint32_t inbox1_rptr; 252 uint32_t inbox1_wptr; 253 uint32_t inbox1_size; 254 uint32_t inbox0_rptr; 255 uint32_t inbox0_wptr; 256 uint32_t inbox0_size; 257 uint8_t is_dmcub_enabled : 1; 258 uint8_t is_dmcub_soft_reset : 1; 259 uint8_t is_dmcub_secure_reset : 1; 260 uint8_t is_traceport_en : 1; 261 uint8_t is_cw0_enabled : 1; 262 uint8_t is_cw6_enabled : 1; 263 }; 264 265 /** 266 * struct dmub_srv_base_funcs - Driver specific base callbacks 267 */ 268 struct dmub_srv_base_funcs { 269 /** 270 * @reg_read: 271 * 272 * Hook for reading a register. 273 * 274 * Return: The 32-bit register value from the given address. 275 */ 276 uint32_t (*reg_read)(void *ctx, uint32_t address); 277 278 /** 279 * @reg_write: 280 * 281 * Hook for writing a value to the register specified by address. 282 */ 283 void (*reg_write)(void *ctx, uint32_t address, uint32_t value); 284 }; 285 286 /** 287 * struct dmub_srv_hw_funcs - hardware sequencer funcs for dmub 288 */ 289 struct dmub_srv_hw_funcs { 290 /* private: internal use only */ 291 292 void (*init)(struct dmub_srv *dmub); 293 294 void (*reset)(struct dmub_srv *dmub); 295 296 void (*reset_release)(struct dmub_srv *dmub); 297 298 void (*backdoor_load)(struct dmub_srv *dmub, 299 const struct dmub_window *cw0, 300 const struct dmub_window *cw1); 301 302 void (*setup_windows)(struct dmub_srv *dmub, 303 const struct dmub_window *cw2, 304 const struct dmub_window *cw3, 305 const struct dmub_window *cw4, 306 const struct dmub_window *cw5, 307 const struct dmub_window *cw6); 308 309 void (*setup_mailbox)(struct dmub_srv *dmub, 310 const struct dmub_region *inbox1); 311 312 uint32_t (*get_inbox1_rptr)(struct dmub_srv *dmub); 313 314 void (*set_inbox1_wptr)(struct dmub_srv *dmub, uint32_t wptr_offset); 315 316 void (*setup_out_mailbox)(struct dmub_srv *dmub, 317 const struct dmub_region *outbox1); 318 319 uint32_t (*get_outbox1_wptr)(struct dmub_srv *dmub); 320 321 void (*set_outbox1_rptr)(struct dmub_srv *dmub, uint32_t rptr_offset); 322 323 void (*setup_outbox0)(struct dmub_srv *dmub, 324 const struct dmub_region *outbox0); 325 326 uint32_t (*get_outbox0_wptr)(struct dmub_srv *dmub); 327 328 void (*set_outbox0_rptr)(struct dmub_srv *dmub, uint32_t rptr_offset); 329 330 uint32_t (*emul_get_inbox1_rptr)(struct dmub_srv *dmub); 331 332 void (*emul_set_inbox1_wptr)(struct dmub_srv *dmub, uint32_t wptr_offset); 333 334 bool (*is_supported)(struct dmub_srv *dmub); 335 336 bool (*is_hw_init)(struct dmub_srv *dmub); 337 338 bool (*is_phy_init)(struct dmub_srv *dmub); 339 void (*enable_dmub_boot_options)(struct dmub_srv *dmub, 340 const struct dmub_srv_hw_params *params); 341 342 void (*skip_dmub_panel_power_sequence)(struct dmub_srv *dmub, bool skip); 343 344 union dmub_fw_boot_status (*get_fw_status)(struct dmub_srv *dmub); 345 346 347 void (*set_gpint)(struct dmub_srv *dmub, 348 union dmub_gpint_data_register reg); 349 350 bool (*is_gpint_acked)(struct dmub_srv *dmub, 351 union dmub_gpint_data_register reg); 352 353 uint32_t (*get_gpint_response)(struct dmub_srv *dmub); 354 355 void (*send_inbox0_cmd)(struct dmub_srv *dmub, union dmub_inbox0_data_register data); 356 uint32_t (*get_current_time)(struct dmub_srv *dmub); 357 358 void (*get_diagnostic_data)(struct dmub_srv *dmub, struct dmub_diagnostic_data *dmub_oca); 359 }; 360 361 /** 362 * struct dmub_srv_create_params - params for dmub service creation 363 * @base_funcs: driver supplied base routines 364 * @hw_funcs: optional overrides for hw funcs 365 * @user_ctx: context data for callback funcs 366 * @asic: driver supplied asic 367 * @fw_version: the current firmware version, if any 368 * @is_virtual: false for hw support only 369 */ 370 struct dmub_srv_create_params { 371 struct dmub_srv_base_funcs funcs; 372 struct dmub_srv_hw_funcs *hw_funcs; 373 void *user_ctx; 374 enum dmub_asic asic; 375 uint32_t fw_version; 376 bool is_virtual; 377 }; 378 379 /** 380 * struct dmub_srv - software state for dmcub 381 * @asic: dmub asic identifier 382 * @user_ctx: user provided context for the dmub_srv 383 * @fw_version: the current firmware version, if any 384 * @is_virtual: false if hardware support only 385 * @fw_state: dmub firmware state pointer 386 */ 387 struct dmub_srv { 388 enum dmub_asic asic; 389 void *user_ctx; 390 uint32_t fw_version; 391 bool is_virtual; 392 struct dmub_fb scratch_mem_fb; 393 volatile const struct dmub_fw_state *fw_state; 394 395 /* private: internal use only */ 396 const struct dmub_srv_common_regs *regs; 397 const struct dmub_srv_dcn31_regs *regs_dcn31; 398 399 struct dmub_srv_base_funcs funcs; 400 struct dmub_srv_hw_funcs hw_funcs; 401 struct dmub_rb inbox1_rb; 402 /** 403 * outbox1_rb is accessed without locks (dal & dc) 404 * and to be used only in dmub_srv_stat_get_notification() 405 */ 406 struct dmub_rb outbox1_rb; 407 408 struct dmub_rb outbox0_rb; 409 410 bool sw_init; 411 bool hw_init; 412 413 uint64_t fb_base; 414 uint64_t fb_offset; 415 uint32_t psp_version; 416 417 /* Feature capabilities reported by fw */ 418 struct dmub_feature_caps feature_caps; 419 }; 420 421 /** 422 * struct dmub_notification - dmub notification data 423 * @type: dmub notification type 424 * @link_index: link index to identify aux connection 425 * @result: USB4 status returned from dmub 426 * @pending_notification: Indicates there are other pending notifications 427 * @aux_reply: aux reply 428 * @hpd_status: hpd status 429 */ 430 struct dmub_notification { 431 enum dmub_notification_type type; 432 uint8_t link_index; 433 uint8_t result; 434 bool pending_notification; 435 union { 436 struct aux_reply_data aux_reply; 437 enum dp_hpd_status hpd_status; 438 }; 439 }; 440 441 /** 442 * DMUB firmware version helper macro - useful for checking if the version 443 * of a firmware to know if feature or functionality is supported or present. 444 */ 445 #define DMUB_FW_VERSION(major, minor, revision) \ 446 ((((major) & 0xFF) << 24) | (((minor) & 0xFF) << 16) | ((revision) & 0xFFFF)) 447 448 /** 449 * dmub_srv_create() - creates the DMUB service. 450 * @dmub: the dmub service 451 * @params: creation parameters for the service 452 * 453 * Return: 454 * DMUB_STATUS_OK - success 455 * DMUB_STATUS_INVALID - unspecified error 456 */ 457 enum dmub_status dmub_srv_create(struct dmub_srv *dmub, 458 const struct dmub_srv_create_params *params); 459 460 /** 461 * dmub_srv_destroy() - destroys the DMUB service. 462 * @dmub: the dmub service 463 */ 464 void dmub_srv_destroy(struct dmub_srv *dmub); 465 466 /** 467 * dmub_srv_calc_region_info() - retreives region info from the dmub service 468 * @dmub: the dmub service 469 * @params: parameters used to calculate region locations 470 * @info_out: the output region info from dmub 471 * 472 * Calculates the base and top address for all relevant dmub regions 473 * using the parameters given (if any). 474 * 475 * Return: 476 * DMUB_STATUS_OK - success 477 * DMUB_STATUS_INVALID - unspecified error 478 */ 479 enum dmub_status 480 dmub_srv_calc_region_info(struct dmub_srv *dmub, 481 const struct dmub_srv_region_params *params, 482 struct dmub_srv_region_info *out); 483 484 /** 485 * dmub_srv_calc_region_info() - retreives fb info from the dmub service 486 * @dmub: the dmub service 487 * @params: parameters used to calculate fb locations 488 * @info_out: the output fb info from dmub 489 * 490 * Calculates the base and top address for all relevant dmub regions 491 * using the parameters given (if any). 492 * 493 * Return: 494 * DMUB_STATUS_OK - success 495 * DMUB_STATUS_INVALID - unspecified error 496 */ 497 enum dmub_status dmub_srv_calc_fb_info(struct dmub_srv *dmub, 498 const struct dmub_srv_fb_params *params, 499 struct dmub_srv_fb_info *out); 500 501 /** 502 * dmub_srv_has_hw_support() - returns hw support state for dmcub 503 * @dmub: the dmub service 504 * @is_supported: hw support state 505 * 506 * Queries the hardware for DMCUB support and returns the result. 507 * 508 * Can be called before dmub_srv_hw_init(). 509 * 510 * Return: 511 * DMUB_STATUS_OK - success 512 * DMUB_STATUS_INVALID - unspecified error 513 */ 514 enum dmub_status dmub_srv_has_hw_support(struct dmub_srv *dmub, 515 bool *is_supported); 516 517 /** 518 * dmub_srv_is_hw_init() - returns hardware init state 519 * 520 * Return: 521 * DMUB_STATUS_OK - success 522 * DMUB_STATUS_INVALID - unspecified error 523 */ 524 enum dmub_status dmub_srv_is_hw_init(struct dmub_srv *dmub, bool *is_hw_init); 525 526 /** 527 * dmub_srv_hw_init() - initializes the underlying DMUB hardware 528 * @dmub: the dmub service 529 * @params: params for hardware initialization 530 * 531 * Resets the DMUB hardware and performs backdoor loading of the 532 * required cache regions based on the input framebuffer regions. 533 * 534 * Return: 535 * DMUB_STATUS_OK - success 536 * DMUB_STATUS_NO_CTX - dmcub context not initialized 537 * DMUB_STATUS_INVALID - unspecified error 538 */ 539 enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub, 540 const struct dmub_srv_hw_params *params); 541 542 /** 543 * dmub_srv_hw_reset() - puts the DMUB hardware in reset state if initialized 544 * @dmub: the dmub service 545 * 546 * Before destroying the DMUB service or releasing the backing framebuffer 547 * memory we'll need to put the DMCUB into reset first. 548 * 549 * A subsequent call to dmub_srv_hw_init() will re-enable the DMCUB. 550 * 551 * Return: 552 * DMUB_STATUS_OK - success 553 * DMUB_STATUS_INVALID - unspecified error 554 */ 555 enum dmub_status dmub_srv_hw_reset(struct dmub_srv *dmub); 556 557 /** 558 * dmub_srv_cmd_queue() - queues a command to the DMUB 559 * @dmub: the dmub service 560 * @cmd: the command to queue 561 * 562 * Queues a command to the DMUB service but does not begin execution 563 * immediately. 564 * 565 * Return: 566 * DMUB_STATUS_OK - success 567 * DMUB_STATUS_QUEUE_FULL - no remaining room in queue 568 * DMUB_STATUS_INVALID - unspecified error 569 */ 570 enum dmub_status dmub_srv_cmd_queue(struct dmub_srv *dmub, 571 const union dmub_rb_cmd *cmd); 572 573 /** 574 * dmub_srv_cmd_execute() - Executes a queued sequence to the dmub 575 * @dmub: the dmub service 576 * 577 * Begins execution of queued commands on the dmub. 578 * 579 * Return: 580 * DMUB_STATUS_OK - success 581 * DMUB_STATUS_INVALID - unspecified error 582 */ 583 enum dmub_status dmub_srv_cmd_execute(struct dmub_srv *dmub); 584 585 /** 586 * dmub_srv_wait_for_auto_load() - Waits for firmware auto load to complete 587 * @dmub: the dmub service 588 * @timeout_us: the maximum number of microseconds to wait 589 * 590 * Waits until firmware has been autoloaded by the DMCUB. The maximum 591 * wait time is given in microseconds to prevent spinning forever. 592 * 593 * On ASICs without firmware autoload support this function will return 594 * immediately. 595 * 596 * Return: 597 * DMUB_STATUS_OK - success 598 * DMUB_STATUS_TIMEOUT - wait for phy init timed out 599 * DMUB_STATUS_INVALID - unspecified error 600 */ 601 enum dmub_status dmub_srv_wait_for_auto_load(struct dmub_srv *dmub, 602 uint32_t timeout_us); 603 604 /** 605 * dmub_srv_wait_for_phy_init() - Waits for DMUB PHY init to complete 606 * @dmub: the dmub service 607 * @timeout_us: the maximum number of microseconds to wait 608 * 609 * Waits until the PHY has been initialized by the DMUB. The maximum 610 * wait time is given in microseconds to prevent spinning forever. 611 * 612 * On ASICs without PHY init support this function will return 613 * immediately. 614 * 615 * Return: 616 * DMUB_STATUS_OK - success 617 * DMUB_STATUS_TIMEOUT - wait for phy init timed out 618 * DMUB_STATUS_INVALID - unspecified error 619 */ 620 enum dmub_status dmub_srv_wait_for_phy_init(struct dmub_srv *dmub, 621 uint32_t timeout_us); 622 623 /** 624 * dmub_srv_wait_for_idle() - Waits for the DMUB to be idle 625 * @dmub: the dmub service 626 * @timeout_us: the maximum number of microseconds to wait 627 * 628 * Waits until the DMUB buffer is empty and all commands have 629 * finished processing. The maximum wait time is given in 630 * microseconds to prevent spinning forever. 631 * 632 * Return: 633 * DMUB_STATUS_OK - success 634 * DMUB_STATUS_TIMEOUT - wait for buffer to flush timed out 635 * DMUB_STATUS_INVALID - unspecified error 636 */ 637 enum dmub_status dmub_srv_wait_for_idle(struct dmub_srv *dmub, 638 uint32_t timeout_us); 639 640 /** 641 * dmub_srv_send_gpint_command() - Sends a GPINT based command. 642 * @dmub: the dmub service 643 * @command_code: the command code to send 644 * @param: the command parameter to send 645 * @timeout_us: the maximum number of microseconds to wait 646 * 647 * Sends a command via the general purpose interrupt (GPINT). 648 * Waits for the number of microseconds specified by timeout_us 649 * for the command ACK before returning. 650 * 651 * Can be called after software initialization. 652 * 653 * Return: 654 * DMUB_STATUS_OK - success 655 * DMUB_STATUS_TIMEOUT - wait for ACK timed out 656 * DMUB_STATUS_INVALID - unspecified error 657 */ 658 enum dmub_status 659 dmub_srv_send_gpint_command(struct dmub_srv *dmub, 660 enum dmub_gpint_command command_code, 661 uint16_t param, uint32_t timeout_us); 662 663 /** 664 * dmub_srv_get_gpint_response() - Queries the GPINT response. 665 * @dmub: the dmub service 666 * @response: the response for the last GPINT 667 * 668 * Returns the response code for the last GPINT interrupt. 669 * 670 * Can be called after software initialization. 671 * 672 * Return: 673 * DMUB_STATUS_OK - success 674 * DMUB_STATUS_INVALID - unspecified error 675 */ 676 enum dmub_status dmub_srv_get_gpint_response(struct dmub_srv *dmub, 677 uint32_t *response); 678 679 /** 680 * dmub_flush_buffer_mem() - Read back entire frame buffer region. 681 * This ensures that the write from x86 has been flushed and will not 682 * hang the DMCUB. 683 * @fb: frame buffer to flush 684 * 685 * Can be called after software initialization. 686 */ 687 void dmub_flush_buffer_mem(const struct dmub_fb *fb); 688 689 /** 690 * dmub_srv_get_fw_boot_status() - Returns the DMUB boot status bits. 691 * 692 * @dmub: the dmub service 693 * @status: out pointer for firmware status 694 * 695 * Return: 696 * DMUB_STATUS_OK - success 697 * DMUB_STATUS_INVALID - unspecified error, unsupported 698 */ 699 enum dmub_status dmub_srv_get_fw_boot_status(struct dmub_srv *dmub, 700 union dmub_fw_boot_status *status); 701 702 enum dmub_status dmub_srv_cmd_with_reply_data(struct dmub_srv *dmub, 703 union dmub_rb_cmd *cmd); 704 705 bool dmub_srv_get_outbox0_msg(struct dmub_srv *dmub, struct dmcub_trace_buf_entry *entry); 706 707 bool dmub_srv_get_diagnostic_data(struct dmub_srv *dmub, struct dmub_diagnostic_data *diag_data); 708 709 #if defined(__cplusplus) 710 } 711 #endif 712 713 #endif /* _DMUB_SRV_H_ */ 714