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 #ifdef CONFIG_DRM_AMD_DC_DCN3_1 77 struct dmub_srv_dcn31_regs; 78 #endif 79 80 struct dmcub_trace_buf_entry; 81 82 /* enum dmub_status - return code for dmcub functions */ 83 enum dmub_status { 84 DMUB_STATUS_OK = 0, 85 DMUB_STATUS_NO_CTX, 86 DMUB_STATUS_QUEUE_FULL, 87 DMUB_STATUS_TIMEOUT, 88 DMUB_STATUS_INVALID, 89 }; 90 91 /* enum dmub_asic - dmub asic identifier */ 92 enum dmub_asic { 93 DMUB_ASIC_NONE = 0, 94 DMUB_ASIC_DCN20, 95 DMUB_ASIC_DCN21, 96 DMUB_ASIC_DCN30, 97 DMUB_ASIC_DCN301, 98 DMUB_ASIC_DCN302, 99 DMUB_ASIC_DCN303, 100 #ifdef CONFIG_DRM_AMD_DC_DCN3_1 101 DMUB_ASIC_DCN31, 102 #endif 103 DMUB_ASIC_MAX, 104 }; 105 106 /* enum dmub_window_id - dmub window identifier */ 107 enum dmub_window_id { 108 DMUB_WINDOW_0_INST_CONST = 0, 109 DMUB_WINDOW_1_STACK, 110 DMUB_WINDOW_2_BSS_DATA, 111 DMUB_WINDOW_3_VBIOS, 112 DMUB_WINDOW_4_MAILBOX, 113 DMUB_WINDOW_5_TRACEBUFF, 114 DMUB_WINDOW_6_FW_STATE, 115 DMUB_WINDOW_7_SCRATCH_MEM, 116 DMUB_WINDOW_TOTAL, 117 }; 118 119 /* enum dmub_notification_type - dmub outbox notification identifier */ 120 enum dmub_notification_type { 121 DMUB_NOTIFICATION_NO_DATA = 0, 122 DMUB_NOTIFICATION_AUX_REPLY, 123 DMUB_NOTIFICATION_HPD, 124 DMUB_NOTIFICATION_HPD_IRQ, 125 DMUB_NOTIFICATION_MAX 126 }; 127 128 /** 129 * struct dmub_region - dmub hw memory region 130 * @base: base address for region, must be 256 byte aligned 131 * @top: top address for region 132 */ 133 struct dmub_region { 134 uint32_t base; 135 uint32_t top; 136 }; 137 138 /** 139 * struct dmub_window - dmub hw cache window 140 * @off: offset to the fb memory in gpu address space 141 * @r: region in uc address space for cache window 142 */ 143 struct dmub_window { 144 union dmub_addr offset; 145 struct dmub_region region; 146 }; 147 148 /** 149 * struct dmub_fb - defines a dmub framebuffer memory region 150 * @cpu_addr: cpu virtual address for the region, NULL if invalid 151 * @gpu_addr: gpu virtual address for the region, NULL if invalid 152 * @size: size of the region in bytes, zero if invalid 153 */ 154 struct dmub_fb { 155 void *cpu_addr; 156 uint64_t gpu_addr; 157 uint32_t size; 158 }; 159 160 /** 161 * struct dmub_srv_region_params - params used for calculating dmub regions 162 * @inst_const_size: size of the fw inst const section 163 * @bss_data_size: size of the fw bss data section 164 * @vbios_size: size of the vbios data 165 * @fw_bss_data: raw firmware bss data section 166 */ 167 struct dmub_srv_region_params { 168 uint32_t inst_const_size; 169 uint32_t bss_data_size; 170 uint32_t vbios_size; 171 const uint8_t *fw_inst_const; 172 const uint8_t *fw_bss_data; 173 }; 174 175 /** 176 * struct dmub_srv_region_info - output region info from the dmub service 177 * @fb_size: required minimum fb size for all regions, aligned to 4096 bytes 178 * @num_regions: number of regions used by the dmub service 179 * @regions: region info 180 * 181 * The regions are aligned such that they can be all placed within the 182 * same framebuffer but they can also be placed into different framebuffers. 183 * 184 * The size of each region can be calculated by the caller: 185 * size = reg.top - reg.base 186 * 187 * Care must be taken when performing custom allocations to ensure that each 188 * region base address is 256 byte aligned. 189 */ 190 struct dmub_srv_region_info { 191 uint32_t fb_size; 192 uint8_t num_regions; 193 struct dmub_region regions[DMUB_WINDOW_TOTAL]; 194 }; 195 196 /** 197 * struct dmub_srv_fb_params - parameters used for driver fb setup 198 * @region_info: region info calculated by dmub service 199 * @cpu_addr: base cpu address for the framebuffer 200 * @gpu_addr: base gpu virtual address for the framebuffer 201 */ 202 struct dmub_srv_fb_params { 203 const struct dmub_srv_region_info *region_info; 204 void *cpu_addr; 205 uint64_t gpu_addr; 206 }; 207 208 /** 209 * struct dmub_srv_fb_info - output fb info from the dmub service 210 * @num_fbs: number of required dmub framebuffers 211 * @fbs: fb data for each region 212 * 213 * Output from the dmub service helper that can be used by the 214 * driver to prepare dmub_fb that can be passed into the dmub 215 * hw init service. 216 * 217 * Assumes that all regions are within the same framebuffer 218 * and have been setup according to the region_info generated 219 * by the dmub service. 220 */ 221 struct dmub_srv_fb_info { 222 uint8_t num_fb; 223 struct dmub_fb fb[DMUB_WINDOW_TOTAL]; 224 }; 225 226 /* 227 * struct dmub_srv_hw_params - params for dmub hardware initialization 228 * @fb: framebuffer info for each region 229 * @fb_base: base of the framebuffer aperture 230 * @fb_offset: offset of the framebuffer aperture 231 * @psp_version: psp version to pass for DMCU init 232 * @load_inst_const: true if DMUB should load inst const fw 233 */ 234 struct dmub_srv_hw_params { 235 struct dmub_fb *fb[DMUB_WINDOW_TOTAL]; 236 uint64_t fb_base; 237 uint64_t fb_offset; 238 uint32_t psp_version; 239 bool load_inst_const; 240 bool skip_panel_power_sequence; 241 #ifdef CONFIG_DRM_AMD_DC_DCN3_1 242 bool disable_z10; 243 #endif 244 }; 245 246 /** 247 * struct dmub_srv_base_funcs - Driver specific base callbacks 248 */ 249 struct dmub_srv_base_funcs { 250 /** 251 * @reg_read: 252 * 253 * Hook for reading a register. 254 * 255 * Return: The 32-bit register value from the given address. 256 */ 257 uint32_t (*reg_read)(void *ctx, uint32_t address); 258 259 /** 260 * @reg_write: 261 * 262 * Hook for writing a value to the register specified by address. 263 */ 264 void (*reg_write)(void *ctx, uint32_t address, uint32_t value); 265 }; 266 267 /** 268 * struct dmub_srv_hw_funcs - hardware sequencer funcs for dmub 269 */ 270 struct dmub_srv_hw_funcs { 271 /* private: internal use only */ 272 273 void (*init)(struct dmub_srv *dmub); 274 275 void (*reset)(struct dmub_srv *dmub); 276 277 void (*reset_release)(struct dmub_srv *dmub); 278 279 void (*backdoor_load)(struct dmub_srv *dmub, 280 const struct dmub_window *cw0, 281 const struct dmub_window *cw1); 282 283 void (*setup_windows)(struct dmub_srv *dmub, 284 const struct dmub_window *cw2, 285 const struct dmub_window *cw3, 286 const struct dmub_window *cw4, 287 const struct dmub_window *cw5, 288 const struct dmub_window *cw6); 289 290 void (*setup_mailbox)(struct dmub_srv *dmub, 291 const struct dmub_region *inbox1); 292 293 uint32_t (*get_inbox1_rptr)(struct dmub_srv *dmub); 294 295 void (*set_inbox1_wptr)(struct dmub_srv *dmub, uint32_t wptr_offset); 296 297 void (*setup_out_mailbox)(struct dmub_srv *dmub, 298 const struct dmub_region *outbox1); 299 300 uint32_t (*get_outbox1_wptr)(struct dmub_srv *dmub); 301 302 void (*set_outbox1_rptr)(struct dmub_srv *dmub, uint32_t rptr_offset); 303 304 void (*setup_outbox0)(struct dmub_srv *dmub, 305 const struct dmub_region *outbox0); 306 307 uint32_t (*get_outbox0_wptr)(struct dmub_srv *dmub); 308 309 void (*set_outbox0_rptr)(struct dmub_srv *dmub, uint32_t rptr_offset); 310 311 uint32_t (*emul_get_inbox1_rptr)(struct dmub_srv *dmub); 312 313 void (*emul_set_inbox1_wptr)(struct dmub_srv *dmub, uint32_t wptr_offset); 314 315 bool (*is_supported)(struct dmub_srv *dmub); 316 317 bool (*is_hw_init)(struct dmub_srv *dmub); 318 319 bool (*is_phy_init)(struct dmub_srv *dmub); 320 void (*enable_dmub_boot_options)(struct dmub_srv *dmub, 321 const struct dmub_srv_hw_params *params); 322 323 void (*skip_dmub_panel_power_sequence)(struct dmub_srv *dmub, bool skip); 324 325 union dmub_fw_boot_status (*get_fw_status)(struct dmub_srv *dmub); 326 327 328 void (*set_gpint)(struct dmub_srv *dmub, 329 union dmub_gpint_data_register reg); 330 331 bool (*is_gpint_acked)(struct dmub_srv *dmub, 332 union dmub_gpint_data_register reg); 333 334 uint32_t (*get_gpint_response)(struct dmub_srv *dmub); 335 336 void (*send_inbox0_cmd)(struct dmub_srv *dmub, union dmub_inbox0_data_register data); 337 uint32_t (*get_current_time)(struct dmub_srv *dmub); 338 }; 339 340 /** 341 * struct dmub_srv_create_params - params for dmub service creation 342 * @base_funcs: driver supplied base routines 343 * @hw_funcs: optional overrides for hw funcs 344 * @user_ctx: context data for callback funcs 345 * @asic: driver supplied asic 346 * @fw_version: the current firmware version, if any 347 * @is_virtual: false for hw support only 348 */ 349 struct dmub_srv_create_params { 350 struct dmub_srv_base_funcs funcs; 351 struct dmub_srv_hw_funcs *hw_funcs; 352 void *user_ctx; 353 enum dmub_asic asic; 354 uint32_t fw_version; 355 bool is_virtual; 356 }; 357 358 /** 359 * struct dmub_srv - software state for dmcub 360 * @asic: dmub asic identifier 361 * @user_ctx: user provided context for the dmub_srv 362 * @fw_version: the current firmware version, if any 363 * @is_virtual: false if hardware support only 364 * @fw_state: dmub firmware state pointer 365 */ 366 struct dmub_srv { 367 enum dmub_asic asic; 368 void *user_ctx; 369 uint32_t fw_version; 370 bool is_virtual; 371 struct dmub_fb scratch_mem_fb; 372 volatile const struct dmub_fw_state *fw_state; 373 374 /* private: internal use only */ 375 const struct dmub_srv_common_regs *regs; 376 #ifdef CONFIG_DRM_AMD_DC_DCN3_1 377 const struct dmub_srv_dcn31_regs *regs_dcn31; 378 #endif 379 380 struct dmub_srv_base_funcs funcs; 381 struct dmub_srv_hw_funcs hw_funcs; 382 struct dmub_rb inbox1_rb; 383 /** 384 * outbox1_rb is accessed without locks (dal & dc) 385 * and to be used only in dmub_srv_stat_get_notification() 386 */ 387 struct dmub_rb outbox1_rb; 388 389 struct dmub_rb outbox0_rb; 390 391 bool sw_init; 392 bool hw_init; 393 394 uint64_t fb_base; 395 uint64_t fb_offset; 396 uint32_t psp_version; 397 398 /* Feature capabilities reported by fw */ 399 struct dmub_feature_caps feature_caps; 400 }; 401 402 /** 403 * struct dmub_notification - dmub notification data 404 * @type: dmub notification type 405 * @link_index: link index to identify aux connection 406 * @result: USB4 status returned from dmub 407 * @pending_notification: Indicates there are other pending notifications 408 * @aux_reply: aux reply 409 * @hpd_status: hpd status 410 */ 411 struct dmub_notification { 412 enum dmub_notification_type type; 413 uint8_t link_index; 414 uint8_t result; 415 bool pending_notification; 416 union { 417 struct aux_reply_data aux_reply; 418 enum dp_hpd_status hpd_status; 419 }; 420 }; 421 422 /** 423 * DMUB firmware version helper macro - useful for checking if the version 424 * of a firmware to know if feature or functionality is supported or present. 425 */ 426 #define DMUB_FW_VERSION(major, minor, revision) \ 427 ((((major) & 0xFF) << 24) | (((minor) & 0xFF) << 16) | ((revision) & 0xFFFF)) 428 429 /** 430 * dmub_srv_create() - creates the DMUB service. 431 * @dmub: the dmub service 432 * @params: creation parameters for the service 433 * 434 * Return: 435 * DMUB_STATUS_OK - success 436 * DMUB_STATUS_INVALID - unspecified error 437 */ 438 enum dmub_status dmub_srv_create(struct dmub_srv *dmub, 439 const struct dmub_srv_create_params *params); 440 441 /** 442 * dmub_srv_destroy() - destroys the DMUB service. 443 * @dmub: the dmub service 444 */ 445 void dmub_srv_destroy(struct dmub_srv *dmub); 446 447 /** 448 * dmub_srv_calc_region_info() - retreives region info from the dmub service 449 * @dmub: the dmub service 450 * @params: parameters used to calculate region locations 451 * @info_out: the output region info from dmub 452 * 453 * Calculates the base and top address for all relevant dmub regions 454 * using the parameters given (if any). 455 * 456 * Return: 457 * DMUB_STATUS_OK - success 458 * DMUB_STATUS_INVALID - unspecified error 459 */ 460 enum dmub_status 461 dmub_srv_calc_region_info(struct dmub_srv *dmub, 462 const struct dmub_srv_region_params *params, 463 struct dmub_srv_region_info *out); 464 465 /** 466 * dmub_srv_calc_region_info() - retreives fb info from the dmub service 467 * @dmub: the dmub service 468 * @params: parameters used to calculate fb locations 469 * @info_out: the output fb info from dmub 470 * 471 * Calculates the base and top address for all relevant dmub regions 472 * using the parameters given (if any). 473 * 474 * Return: 475 * DMUB_STATUS_OK - success 476 * DMUB_STATUS_INVALID - unspecified error 477 */ 478 enum dmub_status dmub_srv_calc_fb_info(struct dmub_srv *dmub, 479 const struct dmub_srv_fb_params *params, 480 struct dmub_srv_fb_info *out); 481 482 /** 483 * dmub_srv_has_hw_support() - returns hw support state for dmcub 484 * @dmub: the dmub service 485 * @is_supported: hw support state 486 * 487 * Queries the hardware for DMCUB support and returns the result. 488 * 489 * Can be called before dmub_srv_hw_init(). 490 * 491 * Return: 492 * DMUB_STATUS_OK - success 493 * DMUB_STATUS_INVALID - unspecified error 494 */ 495 enum dmub_status dmub_srv_has_hw_support(struct dmub_srv *dmub, 496 bool *is_supported); 497 498 /** 499 * dmub_srv_is_hw_init() - returns hardware init state 500 * 501 * Return: 502 * DMUB_STATUS_OK - success 503 * DMUB_STATUS_INVALID - unspecified error 504 */ 505 enum dmub_status dmub_srv_is_hw_init(struct dmub_srv *dmub, bool *is_hw_init); 506 507 /** 508 * dmub_srv_hw_init() - initializes the underlying DMUB hardware 509 * @dmub: the dmub service 510 * @params: params for hardware initialization 511 * 512 * Resets the DMUB hardware and performs backdoor loading of the 513 * required cache regions based on the input framebuffer regions. 514 * 515 * Return: 516 * DMUB_STATUS_OK - success 517 * DMUB_STATUS_NO_CTX - dmcub context not initialized 518 * DMUB_STATUS_INVALID - unspecified error 519 */ 520 enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub, 521 const struct dmub_srv_hw_params *params); 522 523 /** 524 * dmub_srv_hw_reset() - puts the DMUB hardware in reset state if initialized 525 * @dmub: the dmub service 526 * 527 * Before destroying the DMUB service or releasing the backing framebuffer 528 * memory we'll need to put the DMCUB into reset first. 529 * 530 * A subsequent call to dmub_srv_hw_init() will re-enable the DMCUB. 531 * 532 * Return: 533 * DMUB_STATUS_OK - success 534 * DMUB_STATUS_INVALID - unspecified error 535 */ 536 enum dmub_status dmub_srv_hw_reset(struct dmub_srv *dmub); 537 538 /** 539 * dmub_srv_cmd_queue() - queues a command to the DMUB 540 * @dmub: the dmub service 541 * @cmd: the command to queue 542 * 543 * Queues a command to the DMUB service but does not begin execution 544 * immediately. 545 * 546 * Return: 547 * DMUB_STATUS_OK - success 548 * DMUB_STATUS_QUEUE_FULL - no remaining room in queue 549 * DMUB_STATUS_INVALID - unspecified error 550 */ 551 enum dmub_status dmub_srv_cmd_queue(struct dmub_srv *dmub, 552 const union dmub_rb_cmd *cmd); 553 554 /** 555 * dmub_srv_cmd_execute() - Executes a queued sequence to the dmub 556 * @dmub: the dmub service 557 * 558 * Begins execution of queued commands on the dmub. 559 * 560 * Return: 561 * DMUB_STATUS_OK - success 562 * DMUB_STATUS_INVALID - unspecified error 563 */ 564 enum dmub_status dmub_srv_cmd_execute(struct dmub_srv *dmub); 565 566 /** 567 * dmub_srv_wait_for_auto_load() - Waits for firmware auto load to complete 568 * @dmub: the dmub service 569 * @timeout_us: the maximum number of microseconds to wait 570 * 571 * Waits until firmware has been autoloaded by the DMCUB. The maximum 572 * wait time is given in microseconds to prevent spinning forever. 573 * 574 * On ASICs without firmware autoload support this function will return 575 * immediately. 576 * 577 * Return: 578 * DMUB_STATUS_OK - success 579 * DMUB_STATUS_TIMEOUT - wait for phy init timed out 580 * DMUB_STATUS_INVALID - unspecified error 581 */ 582 enum dmub_status dmub_srv_wait_for_auto_load(struct dmub_srv *dmub, 583 uint32_t timeout_us); 584 585 /** 586 * dmub_srv_wait_for_phy_init() - Waits for DMUB PHY init to complete 587 * @dmub: the dmub service 588 * @timeout_us: the maximum number of microseconds to wait 589 * 590 * Waits until the PHY has been initialized by the DMUB. The maximum 591 * wait time is given in microseconds to prevent spinning forever. 592 * 593 * On ASICs without PHY init 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_phy_init(struct dmub_srv *dmub, 602 uint32_t timeout_us); 603 604 /** 605 * dmub_srv_wait_for_idle() - Waits for the DMUB to be idle 606 * @dmub: the dmub service 607 * @timeout_us: the maximum number of microseconds to wait 608 * 609 * Waits until the DMUB buffer is empty and all commands have 610 * finished processing. The maximum wait time is given in 611 * microseconds to prevent spinning forever. 612 * 613 * Return: 614 * DMUB_STATUS_OK - success 615 * DMUB_STATUS_TIMEOUT - wait for buffer to flush timed out 616 * DMUB_STATUS_INVALID - unspecified error 617 */ 618 enum dmub_status dmub_srv_wait_for_idle(struct dmub_srv *dmub, 619 uint32_t timeout_us); 620 621 /** 622 * dmub_srv_send_gpint_command() - Sends a GPINT based command. 623 * @dmub: the dmub service 624 * @command_code: the command code to send 625 * @param: the command parameter to send 626 * @timeout_us: the maximum number of microseconds to wait 627 * 628 * Sends a command via the general purpose interrupt (GPINT). 629 * Waits for the number of microseconds specified by timeout_us 630 * for the command ACK before returning. 631 * 632 * Can be called after software initialization. 633 * 634 * Return: 635 * DMUB_STATUS_OK - success 636 * DMUB_STATUS_TIMEOUT - wait for ACK timed out 637 * DMUB_STATUS_INVALID - unspecified error 638 */ 639 enum dmub_status 640 dmub_srv_send_gpint_command(struct dmub_srv *dmub, 641 enum dmub_gpint_command command_code, 642 uint16_t param, uint32_t timeout_us); 643 644 /** 645 * dmub_srv_get_gpint_response() - Queries the GPINT response. 646 * @dmub: the dmub service 647 * @response: the response for the last GPINT 648 * 649 * Returns the response code for the last GPINT interrupt. 650 * 651 * Can be called after software initialization. 652 * 653 * Return: 654 * DMUB_STATUS_OK - success 655 * DMUB_STATUS_INVALID - unspecified error 656 */ 657 enum dmub_status dmub_srv_get_gpint_response(struct dmub_srv *dmub, 658 uint32_t *response); 659 660 /** 661 * dmub_flush_buffer_mem() - Read back entire frame buffer region. 662 * This ensures that the write from x86 has been flushed and will not 663 * hang the DMCUB. 664 * @fb: frame buffer to flush 665 * 666 * Can be called after software initialization. 667 */ 668 void dmub_flush_buffer_mem(const struct dmub_fb *fb); 669 670 /** 671 * dmub_srv_get_fw_boot_status() - Returns the DMUB boot status bits. 672 * 673 * @dmub: the dmub service 674 * @status: out pointer for firmware status 675 * 676 * Return: 677 * DMUB_STATUS_OK - success 678 * DMUB_STATUS_INVALID - unspecified error, unsupported 679 */ 680 enum dmub_status dmub_srv_get_fw_boot_status(struct dmub_srv *dmub, 681 union dmub_fw_boot_status *status); 682 683 enum dmub_status dmub_srv_cmd_with_reply_data(struct dmub_srv *dmub, 684 union dmub_rb_cmd *cmd); 685 686 bool dmub_srv_get_outbox0_msg(struct dmub_srv *dmub, struct dmcub_trace_buf_entry *entry); 687 688 #if defined(__cplusplus) 689 } 690 #endif 691 692 #endif /* _DMUB_SRV_H_ */ 693