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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)
70extern "C" {
71#endif
72
73/* Forward declarations */
74struct dmub_srv;
75struct dmub_srv_common_regs;
76struct dmub_srv_dcn31_regs;
77
78struct dmcub_trace_buf_entry;
79
80/* enum dmub_status - return code for dmcub functions */
81enum 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 */
91enum 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_DCN314,
102 DMUB_ASIC_DCN315,
103 DMUB_ASIC_DCN316,
104 DMUB_ASIC_DCN32,
105 DMUB_ASIC_DCN321,
106 DMUB_ASIC_MAX,
107};
108
109/* enum dmub_window_id - dmub window identifier */
110enum dmub_window_id {
111 DMUB_WINDOW_0_INST_CONST = 0,
112 DMUB_WINDOW_1_STACK,
113 DMUB_WINDOW_2_BSS_DATA,
114 DMUB_WINDOW_3_VBIOS,
115 DMUB_WINDOW_4_MAILBOX,
116 DMUB_WINDOW_5_TRACEBUFF,
117 DMUB_WINDOW_6_FW_STATE,
118 DMUB_WINDOW_7_SCRATCH_MEM,
119 DMUB_WINDOW_TOTAL,
120};
121
122/* enum dmub_notification_type - dmub outbox notification identifier */
123enum dmub_notification_type {
124 DMUB_NOTIFICATION_NO_DATA = 0,
125 DMUB_NOTIFICATION_AUX_REPLY,
126 DMUB_NOTIFICATION_HPD,
127 DMUB_NOTIFICATION_HPD_IRQ,
128 DMUB_NOTIFICATION_SET_CONFIG_REPLY,
129 DMUB_NOTIFICATION_MAX
130};
131
132/**
133 * struct dmub_region - dmub hw memory region
134 * @base: base address for region, must be 256 byte aligned
135 * @top: top address for region
136 */
137struct dmub_region {
138 uint32_t base;
139 uint32_t top;
140};
141
142/**
143 * struct dmub_window - dmub hw cache window
144 * @off: offset to the fb memory in gpu address space
145 * @r: region in uc address space for cache window
146 */
147struct dmub_window {
148 union dmub_addr offset;
149 struct dmub_region region;
150};
151
152/**
153 * struct dmub_fb - defines a dmub framebuffer memory region
154 * @cpu_addr: cpu virtual address for the region, NULL if invalid
155 * @gpu_addr: gpu virtual address for the region, NULL if invalid
156 * @size: size of the region in bytes, zero if invalid
157 */
158struct dmub_fb {
159 void *cpu_addr;
160 uint64_t gpu_addr;
161 uint32_t size;
162};
163
164/**
165 * struct dmub_srv_region_params - params used for calculating dmub regions
166 * @inst_const_size: size of the fw inst const section
167 * @bss_data_size: size of the fw bss data section
168 * @vbios_size: size of the vbios data
169 * @fw_bss_data: raw firmware bss data section
170 */
171struct dmub_srv_region_params {
172 uint32_t inst_const_size;
173 uint32_t bss_data_size;
174 uint32_t vbios_size;
175 const uint8_t *fw_inst_const;
176 const uint8_t *fw_bss_data;
177};
178
179/**
180 * struct dmub_srv_region_info - output region info from the dmub service
181 * @fb_size: required minimum fb size for all regions, aligned to 4096 bytes
182 * @num_regions: number of regions used by the dmub service
183 * @regions: region info
184 *
185 * The regions are aligned such that they can be all placed within the
186 * same framebuffer but they can also be placed into different framebuffers.
187 *
188 * The size of each region can be calculated by the caller:
189 * size = reg.top - reg.base
190 *
191 * Care must be taken when performing custom allocations to ensure that each
192 * region base address is 256 byte aligned.
193 */
194struct dmub_srv_region_info {
195 uint32_t fb_size;
196 uint8_t num_regions;
197 struct dmub_region regions[DMUB_WINDOW_TOTAL];
198};
199
200/**
201 * struct dmub_srv_fb_params - parameters used for driver fb setup
202 * @region_info: region info calculated by dmub service
203 * @cpu_addr: base cpu address for the framebuffer
204 * @gpu_addr: base gpu virtual address for the framebuffer
205 */
206struct dmub_srv_fb_params {
207 const struct dmub_srv_region_info *region_info;
208 void *cpu_addr;
209 uint64_t gpu_addr;
210};
211
212/**
213 * struct dmub_srv_fb_info - output fb info from the dmub service
214 * @num_fbs: number of required dmub framebuffers
215 * @fbs: fb data for each region
216 *
217 * Output from the dmub service helper that can be used by the
218 * driver to prepare dmub_fb that can be passed into the dmub
219 * hw init service.
220 *
221 * Assumes that all regions are within the same framebuffer
222 * and have been setup according to the region_info generated
223 * by the dmub service.
224 */
225struct dmub_srv_fb_info {
226 uint8_t num_fb;
227 struct dmub_fb fb[DMUB_WINDOW_TOTAL];
228};
229
230/*
231 * struct dmub_srv_hw_params - params for dmub hardware initialization
232 * @fb: framebuffer info for each region
233 * @fb_base: base of the framebuffer aperture
234 * @fb_offset: offset of the framebuffer aperture
235 * @psp_version: psp version to pass for DMCU init
236 * @load_inst_const: true if DMUB should load inst const fw
237 */
238struct dmub_srv_hw_params {
239 struct dmub_fb *fb[DMUB_WINDOW_TOTAL];
240 uint64_t fb_base;
241 uint64_t fb_offset;
242 uint32_t psp_version;
243 bool load_inst_const;
244 bool skip_panel_power_sequence;
245 bool disable_z10;
246 bool power_optimization;
247 bool dpia_supported;
248 bool disable_dpia;
249 bool usb4_cm_version;
250 bool fw_in_system_memory;
251 bool dpia_hpd_int_enable_supported;
252};
253
254/**
255 * struct dmub_diagnostic_data - Diagnostic data retrieved from DMCUB for
256 * debugging purposes, including logging, crash analysis, etc.
257 */
258struct dmub_diagnostic_data {
259 uint32_t dmcub_version;
260 uint32_t scratch[16];
261 uint32_t pc;
262 uint32_t undefined_address_fault_addr;
263 uint32_t inst_fetch_fault_addr;
264 uint32_t data_write_fault_addr;
265 uint32_t inbox1_rptr;
266 uint32_t inbox1_wptr;
267 uint32_t inbox1_size;
268 uint32_t inbox0_rptr;
269 uint32_t inbox0_wptr;
270 uint32_t inbox0_size;
271 uint8_t is_dmcub_enabled : 1;
272 uint8_t is_dmcub_soft_reset : 1;
273 uint8_t is_dmcub_secure_reset : 1;
274 uint8_t is_traceport_en : 1;
275 uint8_t is_cw0_enabled : 1;
276 uint8_t is_cw6_enabled : 1;
277};
278
279/**
280 * struct dmub_srv_base_funcs - Driver specific base callbacks
281 */
282struct dmub_srv_base_funcs {
283 /**
284 * @reg_read:
285 *
286 * Hook for reading a register.
287 *
288 * Return: The 32-bit register value from the given address.
289 */
290 uint32_t (*reg_read)(void *ctx, uint32_t address);
291
292 /**
293 * @reg_write:
294 *
295 * Hook for writing a value to the register specified by address.
296 */
297 void (*reg_write)(void *ctx, uint32_t address, uint32_t value);
298};
299
300/**
301 * struct dmub_srv_hw_funcs - hardware sequencer funcs for dmub
302 */
303struct dmub_srv_hw_funcs {
304 /* private: internal use only */
305
306 void (*init)(struct dmub_srv *dmub);
307
308 void (*reset)(struct dmub_srv *dmub);
309
310 void (*reset_release)(struct dmub_srv *dmub);
311
312 void (*backdoor_load)(struct dmub_srv *dmub,
313 const struct dmub_window *cw0,
314 const struct dmub_window *cw1);
315
316 void (*backdoor_load_zfb_mode)(struct dmub_srv *dmub,
317 const struct dmub_window *cw0,
318 const struct dmub_window *cw1);
319 void (*setup_windows)(struct dmub_srv *dmub,
320 const struct dmub_window *cw2,
321 const struct dmub_window *cw3,
322 const struct dmub_window *cw4,
323 const struct dmub_window *cw5,
324 const struct dmub_window *cw6);
325
326 void (*setup_mailbox)(struct dmub_srv *dmub,
327 const struct dmub_region *inbox1);
328
329 uint32_t (*get_inbox1_rptr)(struct dmub_srv *dmub);
330
331 void (*set_inbox1_wptr)(struct dmub_srv *dmub, uint32_t wptr_offset);
332
333 void (*setup_out_mailbox)(struct dmub_srv *dmub,
334 const struct dmub_region *outbox1);
335
336 uint32_t (*get_outbox1_wptr)(struct dmub_srv *dmub);
337
338 void (*set_outbox1_rptr)(struct dmub_srv *dmub, uint32_t rptr_offset);
339
340 void (*setup_outbox0)(struct dmub_srv *dmub,
341 const struct dmub_region *outbox0);
342
343 uint32_t (*get_outbox0_wptr)(struct dmub_srv *dmub);
344
345 void (*set_outbox0_rptr)(struct dmub_srv *dmub, uint32_t rptr_offset);
346
347 uint32_t (*emul_get_inbox1_rptr)(struct dmub_srv *dmub);
348
349 void (*emul_set_inbox1_wptr)(struct dmub_srv *dmub, uint32_t wptr_offset);
350
351 bool (*is_supported)(struct dmub_srv *dmub);
352
353 bool (*is_hw_init)(struct dmub_srv *dmub);
354
355 bool (*is_phy_init)(struct dmub_srv *dmub);
356 void (*enable_dmub_boot_options)(struct dmub_srv *dmub,
357 const struct dmub_srv_hw_params *params);
358
359 void (*skip_dmub_panel_power_sequence)(struct dmub_srv *dmub, bool skip);
360
361 union dmub_fw_boot_status (*get_fw_status)(struct dmub_srv *dmub);
362
363
364 void (*set_gpint)(struct dmub_srv *dmub,
365 union dmub_gpint_data_register reg);
366
367 bool (*is_gpint_acked)(struct dmub_srv *dmub,
368 union dmub_gpint_data_register reg);
369
370 uint32_t (*get_gpint_response)(struct dmub_srv *dmub);
371
372 uint32_t (*get_gpint_dataout)(struct dmub_srv *dmub);
373
374 void (*configure_dmub_in_system_memory)(struct dmub_srv *dmub);
375 void (*clear_inbox0_ack_register)(struct dmub_srv *dmub);
376 uint32_t (*read_inbox0_ack_register)(struct dmub_srv *dmub);
377 void (*send_inbox0_cmd)(struct dmub_srv *dmub, union dmub_inbox0_data_register data);
378 uint32_t (*get_current_time)(struct dmub_srv *dmub);
379
380 void (*get_diagnostic_data)(struct dmub_srv *dmub, struct dmub_diagnostic_data *dmub_oca);
381
382 bool (*should_detect)(struct dmub_srv *dmub);
383};
384
385/**
386 * struct dmub_srv_create_params - params for dmub service creation
387 * @base_funcs: driver supplied base routines
388 * @hw_funcs: optional overrides for hw funcs
389 * @user_ctx: context data for callback funcs
390 * @asic: driver supplied asic
391 * @fw_version: the current firmware version, if any
392 * @is_virtual: false for hw support only
393 */
394struct dmub_srv_create_params {
395 struct dmub_srv_base_funcs funcs;
396 struct dmub_srv_hw_funcs *hw_funcs;
397 void *user_ctx;
398 enum dmub_asic asic;
399 uint32_t fw_version;
400 bool is_virtual;
401};
402
403/**
404 * struct dmub_srv - software state for dmcub
405 * @asic: dmub asic identifier
406 * @user_ctx: user provided context for the dmub_srv
407 * @fw_version: the current firmware version, if any
408 * @is_virtual: false if hardware support only
409 * @fw_state: dmub firmware state pointer
410 */
411struct dmub_srv {
412 enum dmub_asic asic;
413 void *user_ctx;
414 uint32_t fw_version;
415 bool is_virtual;
416 struct dmub_fb scratch_mem_fb;
417 volatile const struct dmub_fw_state *fw_state;
418
419 /* private: internal use only */
420 const struct dmub_srv_common_regs *regs;
421 const struct dmub_srv_dcn31_regs *regs_dcn31;
422 const struct dmub_srv_dcn32_regs *regs_dcn32;
423
424 struct dmub_srv_base_funcs funcs;
425 struct dmub_srv_hw_funcs hw_funcs;
426 struct dmub_rb inbox1_rb;
427 uint32_t inbox1_last_wptr;
428 /**
429 * outbox1_rb is accessed without locks (dal & dc)
430 * and to be used only in dmub_srv_stat_get_notification()
431 */
432 struct dmub_rb outbox1_rb;
433
434 struct dmub_rb outbox0_rb;
435
436 bool sw_init;
437 bool hw_init;
438
439 uint64_t fb_base;
440 uint64_t fb_offset;
441 uint32_t psp_version;
442
443 /* Feature capabilities reported by fw */
444 struct dmub_feature_caps feature_caps;
445 struct dmub_visual_confirm_color visual_confirm_color;
446};
447
448/**
449 * struct dmub_notification - dmub notification data
450 * @type: dmub notification type
451 * @link_index: link index to identify aux connection
452 * @result: USB4 status returned from dmub
453 * @pending_notification: Indicates there are other pending notifications
454 * @aux_reply: aux reply
455 * @hpd_status: hpd status
456 */
457struct dmub_notification {
458 enum dmub_notification_type type;
459 uint8_t link_index;
460 uint8_t result;
461 bool pending_notification;
462 union {
463 struct aux_reply_data aux_reply;
464 enum dp_hpd_status hpd_status;
465 enum set_config_status sc_status;
466 };
467};
468
469/**
470 * DMUB firmware version helper macro - useful for checking if the version
471 * of a firmware to know if feature or functionality is supported or present.
472 */
473#define DMUB_FW_VERSION(major, minor, revision) \
474 ((((major) & 0xFF) << 24) | (((minor) & 0xFF) << 16) | ((revision) & 0xFFFF))
475
476/**
477 * dmub_srv_create() - creates the DMUB service.
478 * @dmub: the dmub service
479 * @params: creation parameters for the service
480 *
481 * Return:
482 * DMUB_STATUS_OK - success
483 * DMUB_STATUS_INVALID - unspecified error
484 */
485enum dmub_status dmub_srv_create(struct dmub_srv *dmub,
486 const struct dmub_srv_create_params *params);
487
488/**
489 * dmub_srv_destroy() - destroys the DMUB service.
490 * @dmub: the dmub service
491 */
492void dmub_srv_destroy(struct dmub_srv *dmub);
493
494/**
495 * dmub_srv_calc_region_info() - retreives region info from the dmub service
496 * @dmub: the dmub service
497 * @params: parameters used to calculate region locations
498 * @info_out: the output region info from dmub
499 *
500 * Calculates the base and top address for all relevant dmub regions
501 * using the parameters given (if any).
502 *
503 * Return:
504 * DMUB_STATUS_OK - success
505 * DMUB_STATUS_INVALID - unspecified error
506 */
507enum dmub_status
508dmub_srv_calc_region_info(struct dmub_srv *dmub,
509 const struct dmub_srv_region_params *params,
510 struct dmub_srv_region_info *out);
511
512/**
513 * dmub_srv_calc_region_info() - retreives fb info from the dmub service
514 * @dmub: the dmub service
515 * @params: parameters used to calculate fb locations
516 * @info_out: the output fb info from dmub
517 *
518 * Calculates the base and top address for all relevant dmub regions
519 * using the parameters given (if any).
520 *
521 * Return:
522 * DMUB_STATUS_OK - success
523 * DMUB_STATUS_INVALID - unspecified error
524 */
525enum dmub_status dmub_srv_calc_fb_info(struct dmub_srv *dmub,
526 const struct dmub_srv_fb_params *params,
527 struct dmub_srv_fb_info *out);
528
529/**
530 * dmub_srv_has_hw_support() - returns hw support state for dmcub
531 * @dmub: the dmub service
532 * @is_supported: hw support state
533 *
534 * Queries the hardware for DMCUB support and returns the result.
535 *
536 * Can be called before dmub_srv_hw_init().
537 *
538 * Return:
539 * DMUB_STATUS_OK - success
540 * DMUB_STATUS_INVALID - unspecified error
541 */
542enum dmub_status dmub_srv_has_hw_support(struct dmub_srv *dmub,
543 bool *is_supported);
544
545/**
546 * dmub_srv_is_hw_init() - returns hardware init state
547 *
548 * Return:
549 * DMUB_STATUS_OK - success
550 * DMUB_STATUS_INVALID - unspecified error
551 */
552enum dmub_status dmub_srv_is_hw_init(struct dmub_srv *dmub, bool *is_hw_init);
553
554/**
555 * dmub_srv_hw_init() - initializes the underlying DMUB hardware
556 * @dmub: the dmub service
557 * @params: params for hardware initialization
558 *
559 * Resets the DMUB hardware and performs backdoor loading of the
560 * required cache regions based on the input framebuffer regions.
561 *
562 * Return:
563 * DMUB_STATUS_OK - success
564 * DMUB_STATUS_NO_CTX - dmcub context not initialized
565 * DMUB_STATUS_INVALID - unspecified error
566 */
567enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub,
568 const struct dmub_srv_hw_params *params);
569
570/**
571 * dmub_srv_hw_reset() - puts the DMUB hardware in reset state if initialized
572 * @dmub: the dmub service
573 *
574 * Before destroying the DMUB service or releasing the backing framebuffer
575 * memory we'll need to put the DMCUB into reset first.
576 *
577 * A subsequent call to dmub_srv_hw_init() will re-enable the DMCUB.
578 *
579 * Return:
580 * DMUB_STATUS_OK - success
581 * DMUB_STATUS_INVALID - unspecified error
582 */
583enum dmub_status dmub_srv_hw_reset(struct dmub_srv *dmub);
584
585/**
586 * dmub_srv_cmd_queue() - queues a command to the DMUB
587 * @dmub: the dmub service
588 * @cmd: the command to queue
589 *
590 * Queues a command to the DMUB service but does not begin execution
591 * immediately.
592 *
593 * Return:
594 * DMUB_STATUS_OK - success
595 * DMUB_STATUS_QUEUE_FULL - no remaining room in queue
596 * DMUB_STATUS_INVALID - unspecified error
597 */
598enum dmub_status dmub_srv_cmd_queue(struct dmub_srv *dmub,
599 const union dmub_rb_cmd *cmd);
600
601/**
602 * dmub_srv_cmd_execute() - Executes a queued sequence to the dmub
603 * @dmub: the dmub service
604 *
605 * Begins execution of queued commands on the dmub.
606 *
607 * Return:
608 * DMUB_STATUS_OK - success
609 * DMUB_STATUS_INVALID - unspecified error
610 */
611enum dmub_status dmub_srv_cmd_execute(struct dmub_srv *dmub);
612
613/**
614 * dmub_srv_wait_for_auto_load() - Waits for firmware auto load to complete
615 * @dmub: the dmub service
616 * @timeout_us: the maximum number of microseconds to wait
617 *
618 * Waits until firmware has been autoloaded by the DMCUB. The maximum
619 * wait time is given in microseconds to prevent spinning forever.
620 *
621 * On ASICs without firmware autoload support this function will return
622 * immediately.
623 *
624 * Return:
625 * DMUB_STATUS_OK - success
626 * DMUB_STATUS_TIMEOUT - wait for phy init timed out
627 * DMUB_STATUS_INVALID - unspecified error
628 */
629enum dmub_status dmub_srv_wait_for_auto_load(struct dmub_srv *dmub,
630 uint32_t timeout_us);
631
632/**
633 * dmub_srv_wait_for_phy_init() - Waits for DMUB PHY init to complete
634 * @dmub: the dmub service
635 * @timeout_us: the maximum number of microseconds to wait
636 *
637 * Waits until the PHY has been initialized by the DMUB. The maximum
638 * wait time is given in microseconds to prevent spinning forever.
639 *
640 * On ASICs without PHY init support this function will return
641 * immediately.
642 *
643 * Return:
644 * DMUB_STATUS_OK - success
645 * DMUB_STATUS_TIMEOUT - wait for phy init timed out
646 * DMUB_STATUS_INVALID - unspecified error
647 */
648enum dmub_status dmub_srv_wait_for_phy_init(struct dmub_srv *dmub,
649 uint32_t timeout_us);
650
651/**
652 * dmub_srv_wait_for_idle() - Waits for the DMUB to be idle
653 * @dmub: the dmub service
654 * @timeout_us: the maximum number of microseconds to wait
655 *
656 * Waits until the DMUB buffer is empty and all commands have
657 * finished processing. The maximum wait time is given in
658 * microseconds to prevent spinning forever.
659 *
660 * Return:
661 * DMUB_STATUS_OK - success
662 * DMUB_STATUS_TIMEOUT - wait for buffer to flush timed out
663 * DMUB_STATUS_INVALID - unspecified error
664 */
665enum dmub_status dmub_srv_wait_for_idle(struct dmub_srv *dmub,
666 uint32_t timeout_us);
667
668/**
669 * dmub_srv_send_gpint_command() - Sends a GPINT based command.
670 * @dmub: the dmub service
671 * @command_code: the command code to send
672 * @param: the command parameter to send
673 * @timeout_us: the maximum number of microseconds to wait
674 *
675 * Sends a command via the general purpose interrupt (GPINT).
676 * Waits for the number of microseconds specified by timeout_us
677 * for the command ACK before returning.
678 *
679 * Can be called after software initialization.
680 *
681 * Return:
682 * DMUB_STATUS_OK - success
683 * DMUB_STATUS_TIMEOUT - wait for ACK timed out
684 * DMUB_STATUS_INVALID - unspecified error
685 */
686enum dmub_status
687dmub_srv_send_gpint_command(struct dmub_srv *dmub,
688 enum dmub_gpint_command command_code,
689 uint16_t param, uint32_t timeout_us);
690
691/**
692 * dmub_srv_get_gpint_response() - Queries the GPINT response.
693 * @dmub: the dmub service
694 * @response: the response for the last GPINT
695 *
696 * Returns the response code for the last GPINT interrupt.
697 *
698 * Can be called after software initialization.
699 *
700 * Return:
701 * DMUB_STATUS_OK - success
702 * DMUB_STATUS_INVALID - unspecified error
703 */
704enum dmub_status dmub_srv_get_gpint_response(struct dmub_srv *dmub,
705 uint32_t *response);
706
707/**
708 * dmub_srv_get_gpint_dataout() - Queries the GPINT DATAOUT.
709 * @dmub: the dmub service
710 * @dataout: the data for the GPINT DATAOUT
711 *
712 * Returns the response code for the last GPINT DATAOUT interrupt.
713 *
714 * Can be called after software initialization.
715 *
716 * Return:
717 * DMUB_STATUS_OK - success
718 * DMUB_STATUS_INVALID - unspecified error
719 */
720enum dmub_status dmub_srv_get_gpint_dataout(struct dmub_srv *dmub,
721 uint32_t *dataout);
722
723/**
724 * dmub_flush_buffer_mem() - Read back entire frame buffer region.
725 * This ensures that the write from x86 has been flushed and will not
726 * hang the DMCUB.
727 * @fb: frame buffer to flush
728 *
729 * Can be called after software initialization.
730 */
731void dmub_flush_buffer_mem(const struct dmub_fb *fb);
732
733/**
734 * dmub_srv_get_fw_boot_status() - Returns the DMUB boot status bits.
735 *
736 * @dmub: the dmub service
737 * @status: out pointer for firmware status
738 *
739 * Return:
740 * DMUB_STATUS_OK - success
741 * DMUB_STATUS_INVALID - unspecified error, unsupported
742 */
743enum dmub_status dmub_srv_get_fw_boot_status(struct dmub_srv *dmub,
744 union dmub_fw_boot_status *status);
745
746enum dmub_status dmub_srv_cmd_with_reply_data(struct dmub_srv *dmub,
747 union dmub_rb_cmd *cmd);
748
749bool dmub_srv_get_outbox0_msg(struct dmub_srv *dmub, struct dmcub_trace_buf_entry *entry);
750
751bool dmub_srv_get_diagnostic_data(struct dmub_srv *dmub, struct dmub_diagnostic_data *diag_data);
752
753bool dmub_srv_should_detect(struct dmub_srv *dmub);
754
755/**
756 * dmub_srv_send_inbox0_cmd() - Send command to DMUB using INBOX0
757 * @dmub: the dmub service
758 * @data: the data to be sent in the INBOX0 command
759 *
760 * Send command by writing directly to INBOX0 WPTR
761 *
762 * Return:
763 * DMUB_STATUS_OK - success
764 * DMUB_STATUS_INVALID - hw_init false or hw function does not exist
765 */
766enum dmub_status dmub_srv_send_inbox0_cmd(struct dmub_srv *dmub, union dmub_inbox0_data_register data);
767
768/**
769 * dmub_srv_wait_for_inbox0_ack() - wait for DMUB to ACK INBOX0 command
770 * @dmub: the dmub service
771 * @timeout_us: the maximum number of microseconds to wait
772 *
773 * Wait for DMUB to ACK the INBOX0 message
774 *
775 * Return:
776 * DMUB_STATUS_OK - success
777 * DMUB_STATUS_INVALID - hw_init false or hw function does not exist
778 * DMUB_STATUS_TIMEOUT - wait for ack timed out
779 */
780enum dmub_status dmub_srv_wait_for_inbox0_ack(struct dmub_srv *dmub, uint32_t timeout_us);
781
782/**
783 * dmub_srv_wait_for_inbox0_ack() - clear ACK register for INBOX0
784 * @dmub: the dmub service
785 *
786 * Clear ACK register for INBOX0
787 *
788 * Return:
789 * DMUB_STATUS_OK - success
790 * DMUB_STATUS_INVALID - hw_init false or hw function does not exist
791 */
792enum dmub_status dmub_srv_clear_inbox0_ack(struct dmub_srv *dmub);
793
794#if defined(__cplusplus)
795}
796#endif
797
798#endif /* _DMUB_SRV_H_ */