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 DMUB_STATUS_HW_FAILURE, 88 }; 89 90 /* enum dmub_asic - dmub asic identifier */ 91 enum dmub_asic { 92 DMUB_ASIC_NONE = 0, 93 DMUB_ASIC_DCN20, 94 DMUB_ASIC_DCN21, 95 DMUB_ASIC_DCN30, 96 DMUB_ASIC_DCN301, 97 DMUB_ASIC_DCN302, 98 DMUB_ASIC_DCN303, 99 DMUB_ASIC_DCN31, 100 DMUB_ASIC_DCN31B, 101 DMUB_ASIC_MAX, 102 }; 103 104 /* enum dmub_window_id - dmub window identifier */ 105 enum dmub_window_id { 106 DMUB_WINDOW_0_INST_CONST = 0, 107 DMUB_WINDOW_1_STACK, 108 DMUB_WINDOW_2_BSS_DATA, 109 DMUB_WINDOW_3_VBIOS, 110 DMUB_WINDOW_4_MAILBOX, 111 DMUB_WINDOW_5_TRACEBUFF, 112 DMUB_WINDOW_6_FW_STATE, 113 DMUB_WINDOW_7_SCRATCH_MEM, 114 DMUB_WINDOW_TOTAL, 115 }; 116 117 /* enum dmub_notification_type - dmub outbox notification identifier */ 118 enum dmub_notification_type { 119 DMUB_NOTIFICATION_NO_DATA = 0, 120 DMUB_NOTIFICATION_AUX_REPLY, 121 DMUB_NOTIFICATION_HPD, 122 DMUB_NOTIFICATION_HPD_IRQ, 123 DMUB_NOTIFICATION_SET_CONFIG_REPLY, 124 DMUB_NOTIFICATION_MAX 125 }; 126 127 /** 128 * struct dmub_region - dmub hw memory region 129 * @base: base address for region, must be 256 byte aligned 130 * @top: top address for region 131 */ 132 struct dmub_region { 133 uint32_t base; 134 uint32_t top; 135 }; 136 137 /** 138 * struct dmub_window - dmub hw cache window 139 * @off: offset to the fb memory in gpu address space 140 * @r: region in uc address space for cache window 141 */ 142 struct dmub_window { 143 union dmub_addr offset; 144 struct dmub_region region; 145 }; 146 147 /** 148 * struct dmub_fb - defines a dmub framebuffer memory region 149 * @cpu_addr: cpu virtual address for the region, NULL if invalid 150 * @gpu_addr: gpu virtual address for the region, NULL if invalid 151 * @size: size of the region in bytes, zero if invalid 152 */ 153 struct dmub_fb { 154 void *cpu_addr; 155 uint64_t gpu_addr; 156 uint32_t size; 157 }; 158 159 /** 160 * struct dmub_srv_region_params - params used for calculating dmub regions 161 * @inst_const_size: size of the fw inst const section 162 * @bss_data_size: size of the fw bss data section 163 * @vbios_size: size of the vbios data 164 * @fw_bss_data: raw firmware bss data section 165 */ 166 struct dmub_srv_region_params { 167 uint32_t inst_const_size; 168 uint32_t bss_data_size; 169 uint32_t vbios_size; 170 const uint8_t *fw_inst_const; 171 const uint8_t *fw_bss_data; 172 }; 173 174 /** 175 * struct dmub_srv_region_info - output region info from the dmub service 176 * @fb_size: required minimum fb size for all regions, aligned to 4096 bytes 177 * @num_regions: number of regions used by the dmub service 178 * @regions: region info 179 * 180 * The regions are aligned such that they can be all placed within the 181 * same framebuffer but they can also be placed into different framebuffers. 182 * 183 * The size of each region can be calculated by the caller: 184 * size = reg.top - reg.base 185 * 186 * Care must be taken when performing custom allocations to ensure that each 187 * region base address is 256 byte aligned. 188 */ 189 struct dmub_srv_region_info { 190 uint32_t fb_size; 191 uint8_t num_regions; 192 struct dmub_region regions[DMUB_WINDOW_TOTAL]; 193 }; 194 195 /** 196 * struct dmub_srv_fb_params - parameters used for driver fb setup 197 * @region_info: region info calculated by dmub service 198 * @cpu_addr: base cpu address for the framebuffer 199 * @gpu_addr: base gpu virtual address for the framebuffer 200 */ 201 struct dmub_srv_fb_params { 202 const struct dmub_srv_region_info *region_info; 203 void *cpu_addr; 204 uint64_t gpu_addr; 205 }; 206 207 /** 208 * struct dmub_srv_fb_info - output fb info from the dmub service 209 * @num_fbs: number of required dmub framebuffers 210 * @fbs: fb data for each region 211 * 212 * Output from the dmub service helper that can be used by the 213 * driver to prepare dmub_fb that can be passed into the dmub 214 * hw init service. 215 * 216 * Assumes that all regions are within the same framebuffer 217 * and have been setup according to the region_info generated 218 * by the dmub service. 219 */ 220 struct dmub_srv_fb_info { 221 uint8_t num_fb; 222 struct dmub_fb fb[DMUB_WINDOW_TOTAL]; 223 }; 224 225 /* 226 * struct dmub_srv_hw_params - params for dmub hardware initialization 227 * @fb: framebuffer info for each region 228 * @fb_base: base of the framebuffer aperture 229 * @fb_offset: offset of the framebuffer aperture 230 * @psp_version: psp version to pass for DMCU init 231 * @load_inst_const: true if DMUB should load inst const fw 232 */ 233 struct dmub_srv_hw_params { 234 struct dmub_fb *fb[DMUB_WINDOW_TOTAL]; 235 uint64_t fb_base; 236 uint64_t fb_offset; 237 uint32_t psp_version; 238 bool load_inst_const; 239 bool skip_panel_power_sequence; 240 bool disable_z10; 241 bool power_optimization; 242 bool dpia_supported; 243 bool disable_dpia; 244 }; 245 246 /** 247 * struct dmub_diagnostic_data - Diagnostic data retrieved from DMCUB for 248 * debugging purposes, including logging, crash analysis, etc. 249 */ 250 struct dmub_diagnostic_data { 251 uint32_t dmcub_version; 252 uint32_t scratch[16]; 253 uint32_t pc; 254 uint32_t undefined_address_fault_addr; 255 uint32_t inst_fetch_fault_addr; 256 uint32_t data_write_fault_addr; 257 uint32_t inbox1_rptr; 258 uint32_t inbox1_wptr; 259 uint32_t inbox1_size; 260 uint32_t inbox0_rptr; 261 uint32_t inbox0_wptr; 262 uint32_t inbox0_size; 263 uint8_t is_dmcub_enabled : 1; 264 uint8_t is_dmcub_soft_reset : 1; 265 uint8_t is_dmcub_secure_reset : 1; 266 uint8_t is_traceport_en : 1; 267 uint8_t is_cw0_enabled : 1; 268 uint8_t is_cw6_enabled : 1; 269 }; 270 271 /** 272 * struct dmub_srv_base_funcs - Driver specific base callbacks 273 */ 274 struct dmub_srv_base_funcs { 275 /** 276 * @reg_read: 277 * 278 * Hook for reading a register. 279 * 280 * Return: The 32-bit register value from the given address. 281 */ 282 uint32_t (*reg_read)(void *ctx, uint32_t address); 283 284 /** 285 * @reg_write: 286 * 287 * Hook for writing a value to the register specified by address. 288 */ 289 void (*reg_write)(void *ctx, uint32_t address, uint32_t value); 290 }; 291 292 /** 293 * struct dmub_srv_hw_funcs - hardware sequencer funcs for dmub 294 */ 295 struct dmub_srv_hw_funcs { 296 /* private: internal use only */ 297 298 void (*init)(struct dmub_srv *dmub); 299 300 void (*reset)(struct dmub_srv *dmub); 301 302 void (*reset_release)(struct dmub_srv *dmub); 303 304 void (*backdoor_load)(struct dmub_srv *dmub, 305 const struct dmub_window *cw0, 306 const struct dmub_window *cw1); 307 308 void (*setup_windows)(struct dmub_srv *dmub, 309 const struct dmub_window *cw2, 310 const struct dmub_window *cw3, 311 const struct dmub_window *cw4, 312 const struct dmub_window *cw5, 313 const struct dmub_window *cw6); 314 315 void (*setup_mailbox)(struct dmub_srv *dmub, 316 const struct dmub_region *inbox1); 317 318 uint32_t (*get_inbox1_rptr)(struct dmub_srv *dmub); 319 320 void (*set_inbox1_wptr)(struct dmub_srv *dmub, uint32_t wptr_offset); 321 322 void (*setup_out_mailbox)(struct dmub_srv *dmub, 323 const struct dmub_region *outbox1); 324 325 uint32_t (*get_outbox1_wptr)(struct dmub_srv *dmub); 326 327 void (*set_outbox1_rptr)(struct dmub_srv *dmub, uint32_t rptr_offset); 328 329 void (*setup_outbox0)(struct dmub_srv *dmub, 330 const struct dmub_region *outbox0); 331 332 uint32_t (*get_outbox0_wptr)(struct dmub_srv *dmub); 333 334 void (*set_outbox0_rptr)(struct dmub_srv *dmub, uint32_t rptr_offset); 335 336 uint32_t (*emul_get_inbox1_rptr)(struct dmub_srv *dmub); 337 338 void (*emul_set_inbox1_wptr)(struct dmub_srv *dmub, uint32_t wptr_offset); 339 340 bool (*is_supported)(struct dmub_srv *dmub); 341 342 bool (*is_hw_init)(struct dmub_srv *dmub); 343 344 bool (*is_phy_init)(struct dmub_srv *dmub); 345 void (*enable_dmub_boot_options)(struct dmub_srv *dmub, 346 const struct dmub_srv_hw_params *params); 347 348 void (*skip_dmub_panel_power_sequence)(struct dmub_srv *dmub, bool skip); 349 350 union dmub_fw_boot_status (*get_fw_status)(struct dmub_srv *dmub); 351 352 353 void (*set_gpint)(struct dmub_srv *dmub, 354 union dmub_gpint_data_register reg); 355 356 bool (*is_gpint_acked)(struct dmub_srv *dmub, 357 union dmub_gpint_data_register reg); 358 359 uint32_t (*get_gpint_response)(struct dmub_srv *dmub); 360 361 uint32_t (*get_gpint_dataout)(struct dmub_srv *dmub); 362 363 void (*send_inbox0_cmd)(struct dmub_srv *dmub, union dmub_inbox0_data_register data); 364 uint32_t (*get_current_time)(struct dmub_srv *dmub); 365 366 void (*get_diagnostic_data)(struct dmub_srv *dmub, struct dmub_diagnostic_data *dmub_oca); 367 368 bool (*should_detect)(struct dmub_srv *dmub); 369 }; 370 371 /** 372 * struct dmub_srv_create_params - params for dmub service creation 373 * @base_funcs: driver supplied base routines 374 * @hw_funcs: optional overrides for hw funcs 375 * @user_ctx: context data for callback funcs 376 * @asic: driver supplied asic 377 * @fw_version: the current firmware version, if any 378 * @is_virtual: false for hw support only 379 */ 380 struct dmub_srv_create_params { 381 struct dmub_srv_base_funcs funcs; 382 struct dmub_srv_hw_funcs *hw_funcs; 383 void *user_ctx; 384 enum dmub_asic asic; 385 uint32_t fw_version; 386 bool is_virtual; 387 }; 388 389 /** 390 * struct dmub_srv - software state for dmcub 391 * @asic: dmub asic identifier 392 * @user_ctx: user provided context for the dmub_srv 393 * @fw_version: the current firmware version, if any 394 * @is_virtual: false if hardware support only 395 * @fw_state: dmub firmware state pointer 396 */ 397 struct dmub_srv { 398 enum dmub_asic asic; 399 void *user_ctx; 400 uint32_t fw_version; 401 bool is_virtual; 402 struct dmub_fb scratch_mem_fb; 403 volatile const struct dmub_fw_state *fw_state; 404 405 /* private: internal use only */ 406 const struct dmub_srv_common_regs *regs; 407 const struct dmub_srv_dcn31_regs *regs_dcn31; 408 409 struct dmub_srv_base_funcs funcs; 410 struct dmub_srv_hw_funcs hw_funcs; 411 struct dmub_rb inbox1_rb; 412 /** 413 * outbox1_rb is accessed without locks (dal & dc) 414 * and to be used only in dmub_srv_stat_get_notification() 415 */ 416 struct dmub_rb outbox1_rb; 417 418 struct dmub_rb outbox0_rb; 419 420 bool sw_init; 421 bool hw_init; 422 423 uint64_t fb_base; 424 uint64_t fb_offset; 425 uint32_t psp_version; 426 427 /* Feature capabilities reported by fw */ 428 struct dmub_feature_caps feature_caps; 429 }; 430 431 /** 432 * struct dmub_notification - dmub notification data 433 * @type: dmub notification type 434 * @link_index: link index to identify aux connection 435 * @result: USB4 status returned from dmub 436 * @pending_notification: Indicates there are other pending notifications 437 * @aux_reply: aux reply 438 * @hpd_status: hpd status 439 */ 440 struct dmub_notification { 441 enum dmub_notification_type type; 442 uint8_t link_index; 443 uint8_t result; 444 bool pending_notification; 445 union { 446 struct aux_reply_data aux_reply; 447 enum dp_hpd_status hpd_status; 448 enum set_config_status sc_status; 449 }; 450 }; 451 452 /** 453 * DMUB firmware version helper macro - useful for checking if the version 454 * of a firmware to know if feature or functionality is supported or present. 455 */ 456 #define DMUB_FW_VERSION(major, minor, revision) \ 457 ((((major) & 0xFF) << 24) | (((minor) & 0xFF) << 16) | ((revision) & 0xFFFF)) 458 459 /** 460 * dmub_srv_create() - creates the DMUB service. 461 * @dmub: the dmub service 462 * @params: creation parameters for the service 463 * 464 * Return: 465 * DMUB_STATUS_OK - success 466 * DMUB_STATUS_INVALID - unspecified error 467 */ 468 enum dmub_status dmub_srv_create(struct dmub_srv *dmub, 469 const struct dmub_srv_create_params *params); 470 471 /** 472 * dmub_srv_destroy() - destroys the DMUB service. 473 * @dmub: the dmub service 474 */ 475 void dmub_srv_destroy(struct dmub_srv *dmub); 476 477 /** 478 * dmub_srv_calc_region_info() - retreives region info from the dmub service 479 * @dmub: the dmub service 480 * @params: parameters used to calculate region locations 481 * @info_out: the output region info from dmub 482 * 483 * Calculates the base and top address for all relevant dmub regions 484 * using the parameters given (if any). 485 * 486 * Return: 487 * DMUB_STATUS_OK - success 488 * DMUB_STATUS_INVALID - unspecified error 489 */ 490 enum dmub_status 491 dmub_srv_calc_region_info(struct dmub_srv *dmub, 492 const struct dmub_srv_region_params *params, 493 struct dmub_srv_region_info *out); 494 495 /** 496 * dmub_srv_calc_region_info() - retreives fb info from the dmub service 497 * @dmub: the dmub service 498 * @params: parameters used to calculate fb locations 499 * @info_out: the output fb info from dmub 500 * 501 * Calculates the base and top address for all relevant dmub regions 502 * using the parameters given (if any). 503 * 504 * Return: 505 * DMUB_STATUS_OK - success 506 * DMUB_STATUS_INVALID - unspecified error 507 */ 508 enum dmub_status dmub_srv_calc_fb_info(struct dmub_srv *dmub, 509 const struct dmub_srv_fb_params *params, 510 struct dmub_srv_fb_info *out); 511 512 /** 513 * dmub_srv_has_hw_support() - returns hw support state for dmcub 514 * @dmub: the dmub service 515 * @is_supported: hw support state 516 * 517 * Queries the hardware for DMCUB support and returns the result. 518 * 519 * Can be called before dmub_srv_hw_init(). 520 * 521 * Return: 522 * DMUB_STATUS_OK - success 523 * DMUB_STATUS_INVALID - unspecified error 524 */ 525 enum dmub_status dmub_srv_has_hw_support(struct dmub_srv *dmub, 526 bool *is_supported); 527 528 /** 529 * dmub_srv_is_hw_init() - returns hardware init state 530 * 531 * Return: 532 * DMUB_STATUS_OK - success 533 * DMUB_STATUS_INVALID - unspecified error 534 */ 535 enum dmub_status dmub_srv_is_hw_init(struct dmub_srv *dmub, bool *is_hw_init); 536 537 /** 538 * dmub_srv_hw_init() - initializes the underlying DMUB hardware 539 * @dmub: the dmub service 540 * @params: params for hardware initialization 541 * 542 * Resets the DMUB hardware and performs backdoor loading of the 543 * required cache regions based on the input framebuffer regions. 544 * 545 * Return: 546 * DMUB_STATUS_OK - success 547 * DMUB_STATUS_NO_CTX - dmcub context not initialized 548 * DMUB_STATUS_INVALID - unspecified error 549 */ 550 enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub, 551 const struct dmub_srv_hw_params *params); 552 553 /** 554 * dmub_srv_hw_reset() - puts the DMUB hardware in reset state if initialized 555 * @dmub: the dmub service 556 * 557 * Before destroying the DMUB service or releasing the backing framebuffer 558 * memory we'll need to put the DMCUB into reset first. 559 * 560 * A subsequent call to dmub_srv_hw_init() will re-enable the DMCUB. 561 * 562 * Return: 563 * DMUB_STATUS_OK - success 564 * DMUB_STATUS_INVALID - unspecified error 565 */ 566 enum dmub_status dmub_srv_hw_reset(struct dmub_srv *dmub); 567 568 /** 569 * dmub_srv_cmd_queue() - queues a command to the DMUB 570 * @dmub: the dmub service 571 * @cmd: the command to queue 572 * 573 * Queues a command to the DMUB service but does not begin execution 574 * immediately. 575 * 576 * Return: 577 * DMUB_STATUS_OK - success 578 * DMUB_STATUS_QUEUE_FULL - no remaining room in queue 579 * DMUB_STATUS_INVALID - unspecified error 580 */ 581 enum dmub_status dmub_srv_cmd_queue(struct dmub_srv *dmub, 582 const union dmub_rb_cmd *cmd); 583 584 /** 585 * dmub_srv_cmd_execute() - Executes a queued sequence to the dmub 586 * @dmub: the dmub service 587 * 588 * Begins execution of queued commands on the dmub. 589 * 590 * Return: 591 * DMUB_STATUS_OK - success 592 * DMUB_STATUS_INVALID - unspecified error 593 */ 594 enum dmub_status dmub_srv_cmd_execute(struct dmub_srv *dmub); 595 596 /** 597 * dmub_srv_wait_for_auto_load() - Waits for firmware auto load to complete 598 * @dmub: the dmub service 599 * @timeout_us: the maximum number of microseconds to wait 600 * 601 * Waits until firmware has been autoloaded by the DMCUB. The maximum 602 * wait time is given in microseconds to prevent spinning forever. 603 * 604 * On ASICs without firmware autoload support this function will return 605 * immediately. 606 * 607 * Return: 608 * DMUB_STATUS_OK - success 609 * DMUB_STATUS_TIMEOUT - wait for phy init timed out 610 * DMUB_STATUS_INVALID - unspecified error 611 */ 612 enum dmub_status dmub_srv_wait_for_auto_load(struct dmub_srv *dmub, 613 uint32_t timeout_us); 614 615 /** 616 * dmub_srv_wait_for_phy_init() - Waits for DMUB PHY init to complete 617 * @dmub: the dmub service 618 * @timeout_us: the maximum number of microseconds to wait 619 * 620 * Waits until the PHY has been initialized by the DMUB. The maximum 621 * wait time is given in microseconds to prevent spinning forever. 622 * 623 * On ASICs without PHY init support this function will return 624 * immediately. 625 * 626 * Return: 627 * DMUB_STATUS_OK - success 628 * DMUB_STATUS_TIMEOUT - wait for phy init timed out 629 * DMUB_STATUS_INVALID - unspecified error 630 */ 631 enum dmub_status dmub_srv_wait_for_phy_init(struct dmub_srv *dmub, 632 uint32_t timeout_us); 633 634 /** 635 * dmub_srv_wait_for_idle() - Waits for the DMUB to be idle 636 * @dmub: the dmub service 637 * @timeout_us: the maximum number of microseconds to wait 638 * 639 * Waits until the DMUB buffer is empty and all commands have 640 * finished processing. The maximum wait time is given in 641 * microseconds to prevent spinning forever. 642 * 643 * Return: 644 * DMUB_STATUS_OK - success 645 * DMUB_STATUS_TIMEOUT - wait for buffer to flush timed out 646 * DMUB_STATUS_INVALID - unspecified error 647 */ 648 enum dmub_status dmub_srv_wait_for_idle(struct dmub_srv *dmub, 649 uint32_t timeout_us); 650 651 /** 652 * dmub_srv_send_gpint_command() - Sends a GPINT based command. 653 * @dmub: the dmub service 654 * @command_code: the command code to send 655 * @param: the command parameter to send 656 * @timeout_us: the maximum number of microseconds to wait 657 * 658 * Sends a command via the general purpose interrupt (GPINT). 659 * Waits for the number of microseconds specified by timeout_us 660 * for the command ACK before returning. 661 * 662 * Can be called after software initialization. 663 * 664 * Return: 665 * DMUB_STATUS_OK - success 666 * DMUB_STATUS_TIMEOUT - wait for ACK timed out 667 * DMUB_STATUS_INVALID - unspecified error 668 */ 669 enum dmub_status 670 dmub_srv_send_gpint_command(struct dmub_srv *dmub, 671 enum dmub_gpint_command command_code, 672 uint16_t param, uint32_t timeout_us); 673 674 /** 675 * dmub_srv_get_gpint_response() - Queries the GPINT response. 676 * @dmub: the dmub service 677 * @response: the response for the last GPINT 678 * 679 * Returns the response code for the last GPINT interrupt. 680 * 681 * Can be called after software initialization. 682 * 683 * Return: 684 * DMUB_STATUS_OK - success 685 * DMUB_STATUS_INVALID - unspecified error 686 */ 687 enum dmub_status dmub_srv_get_gpint_response(struct dmub_srv *dmub, 688 uint32_t *response); 689 690 /** 691 * dmub_srv_get_gpint_dataout() - Queries the GPINT DATAOUT. 692 * @dmub: the dmub service 693 * @dataout: the data for the GPINT DATAOUT 694 * 695 * Returns the response code for the last GPINT DATAOUT interrupt. 696 * 697 * Can be called after software initialization. 698 * 699 * Return: 700 * DMUB_STATUS_OK - success 701 * DMUB_STATUS_INVALID - unspecified error 702 */ 703 enum dmub_status dmub_srv_get_gpint_dataout(struct dmub_srv *dmub, 704 uint32_t *dataout); 705 706 /** 707 * dmub_flush_buffer_mem() - Read back entire frame buffer region. 708 * This ensures that the write from x86 has been flushed and will not 709 * hang the DMCUB. 710 * @fb: frame buffer to flush 711 * 712 * Can be called after software initialization. 713 */ 714 void dmub_flush_buffer_mem(const struct dmub_fb *fb); 715 716 /** 717 * dmub_srv_get_fw_boot_status() - Returns the DMUB boot status bits. 718 * 719 * @dmub: the dmub service 720 * @status: out pointer for firmware status 721 * 722 * Return: 723 * DMUB_STATUS_OK - success 724 * DMUB_STATUS_INVALID - unspecified error, unsupported 725 */ 726 enum dmub_status dmub_srv_get_fw_boot_status(struct dmub_srv *dmub, 727 union dmub_fw_boot_status *status); 728 729 enum dmub_status dmub_srv_cmd_with_reply_data(struct dmub_srv *dmub, 730 union dmub_rb_cmd *cmd); 731 732 bool dmub_srv_get_outbox0_msg(struct dmub_srv *dmub, struct dmcub_trace_buf_entry *entry); 733 734 bool dmub_srv_get_diagnostic_data(struct dmub_srv *dmub, struct dmub_diagnostic_data *diag_data); 735 736 bool dmub_srv_should_detect(struct dmub_srv *dmub); 737 738 #if defined(__cplusplus) 739 } 740 #endif 741 742 #endif /* _DMUB_SRV_H_ */ 743