/* * Copyright 2019 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: AMD *
*/
#ifndef _DMUB_SRV_H_ #define _DMUB_SRV_H_
/** * DOC: DMUB interface and operation * * DMUB is the interface to the display DMCUB microcontroller on DCN hardware. * It delegates hardware initialization and command submission to the * microcontroller. DMUB is the shortname for DMCUB. * * This interface is not thread-safe. Ensure that all access to the interface * is properly synchronized by the caller. * * Initialization and usage of the DMUB service should be done in the * steps given below: * * 1. dmub_srv_create() * 2. dmub_srv_has_hw_support() * 3. dmub_srv_calc_region_info() * 4. dmub_srv_hw_init() * * The call to dmub_srv_create() is required to use the server. * * The calls to dmub_srv_has_hw_support() and dmub_srv_calc_region_info() * are helpers to query cache window size and allocate framebuffer(s) * for the cache windows. * * The call to dmub_srv_hw_init() programs the DMCUB registers to prepare * for command submission. Commands can be queued via dmub_srv_fb_cmd_queue() * and executed via dmub_srv_fb_cmd_execute(). * * If the queue is full the dmub_srv_wait_for_idle() call can be used to * wait until the queue has been cleared. * * Destroying the DMUB service can be done by calling dmub_srv_destroy(). * This does not clear DMUB hardware state, only software state. * * The interface is intended to be standalone and should not depend on any * other component within DAL.
*/
#include"inc/dmub_cmd.h" #include"dc/dc_types.h"
#define DMUB_PC_SNAPSHOT_COUNT 10
/* Default tracebuffer size if meta is absent. */ #define DMUB_TRACE_BUFFER_SIZE (64 * 1024)
/* enum dmub_power_state type - to track DC power state in dmub_srv */ enum dmub_srv_power_state_type {
DMUB_POWER_STATE_UNDEFINED = 0,
DMUB_POWER_STATE_D0 = 1,
DMUB_POWER_STATE_D3 = 8
};
/** * struct dmub_region - dmub hw memory region * @base: base address for region, must be 256 byte aligned * @top: top address for region
*/ struct dmub_region {
uint32_t base;
uint32_t top;
};
/** * struct dmub_window - dmub hw cache window * @off: offset to the fb memory in gpu address space * @r: region in uc address space for cache window
*/ struct dmub_window { union dmub_addr offset; struct dmub_region region;
};
/** * struct dmub_fb - defines a dmub framebuffer memory region * @cpu_addr: cpu virtual address for the region, NULL if invalid * @gpu_addr: gpu virtual address for the region, NULL if invalid * @size: size of the region in bytes, zero if invalid
*/ struct dmub_fb { void *cpu_addr;
uint64_t gpu_addr;
uint32_t size;
};
/** * struct dmub_srv_region_params - params used for calculating dmub regions * @inst_const_size: size of the fw inst const section * @bss_data_size: size of the fw bss data section * @vbios_size: size of the vbios data * @fw_bss_data: raw firmware bss data section
*/ struct dmub_srv_region_params {
uint32_t inst_const_size;
uint32_t bss_data_size;
uint32_t vbios_size; const uint8_t *fw_inst_const; const uint8_t *fw_bss_data; constenum dmub_window_memory_type *window_memory_type;
};
/** * struct dmub_srv_region_info - output region info from the dmub service * @fb_size: required minimum fb size for all regions, aligned to 4096 bytes * @num_regions: number of regions used by the dmub service * @regions: region info * * The regions are aligned such that they can be all placed within the * same framebuffer but they can also be placed into different framebuffers. * * The size of each region can be calculated by the caller: * size = reg.top - reg.base * * Care must be taken when performing custom allocations to ensure that each * region base address is 256 byte aligned.
*/ struct dmub_srv_region_info {
uint32_t fb_size;
uint32_t gart_size;
uint8_t num_regions; struct dmub_region regions[DMUB_WINDOW_TOTAL];
};
/** * struct dmub_srv_memory_params - parameters used for driver fb setup * @region_info: region info calculated by dmub service * @cpu_fb_addr: base cpu address for the framebuffer * @cpu_inbox_addr: base cpu address for the gart * @gpu_fb_addr: base gpu virtual address for the framebuffer * @gpu_inbox_addr: base gpu virtual address for the gart
*/ struct dmub_srv_memory_params { conststruct dmub_srv_region_info *region_info; void *cpu_fb_addr; void *cpu_gart_addr;
uint64_t gpu_fb_addr;
uint64_t gpu_gart_addr; constenum dmub_window_memory_type *window_memory_type;
};
/** * struct dmub_srv_fb_info - output fb info from the dmub service * @num_fbs: number of required dmub framebuffers * @fbs: fb data for each region * * Output from the dmub service helper that can be used by the * driver to prepare dmub_fb that can be passed into the dmub * hw init service. * * Assumes that all regions are within the same framebuffer * and have been setup according to the region_info generated * by the dmub service.
*/ struct dmub_srv_fb_info {
uint8_t num_fb; struct dmub_fb fb[DMUB_WINDOW_TOTAL];
};
/* * struct dmub_srv_hw_params - params for dmub hardware initialization * @fb: framebuffer info for each region * @fb_base: base of the framebuffer aperture * @fb_offset: offset of the framebuffer aperture * @psp_version: psp version to pass for DMCU init * @load_inst_const: true if DMUB should load inst const fw
*/ struct dmub_srv_hw_params { struct dmub_fb *fb[DMUB_WINDOW_TOTAL];
uint64_t fb_base;
uint64_t fb_offset;
uint32_t psp_version; bool load_inst_const; bool skip_panel_power_sequence; bool disable_z10; bool power_optimization; bool dpia_supported; bool disable_dpia; bool usb4_cm_version; bool fw_in_system_memory; bool dpia_hpd_int_enable_supported; bool disable_clock_gate; bool disallow_dispclk_dppclk_ds; bool ips_sequential_ono; enum dmub_memory_access_type mem_access_type; enum dmub_ips_disable_type disable_ips; bool disallow_phy_access; bool disable_sldo_opt; bool enable_non_transparent_setconfig; bool lower_hbr3_phy_ssc;
};
/** * struct dmub_srv_debug - Debug info for dmub_srv * @timeout_occured: Indicates a timeout occured on any message from driver to dmub * @timeout_cmd: first cmd sent from driver that timed out - subsequent timeouts are not stored
*/ struct dmub_timeout_info { bool timeout_occured; union dmub_rb_cmd timeout_cmd; unsignedlonglong timestamp;
};
struct dmub_srv_inbox { /* generic status */
uint64_t num_submitted;
uint64_t num_reported; union { /* frame buffer mailbox status */ struct dmub_rb rb; /* register mailbox status */ struct { bool is_pending; bool is_multi_pending;
};
};
};
/** * struct dmub_srv_base_funcs - Driver specific base callbacks
*/ struct dmub_srv_base_funcs { /** * @reg_read: * * Hook for reading a register. * * Return: The 32-bit register value from the given address.
*/
uint32_t (*reg_read)(void *ctx, uint32_t address);
/** * @reg_write: * * Hook for writing a value to the register specified by address.
*/ void (*reg_write)(void *ctx, uint32_t address, uint32_t value);
};
/** * struct dmub_srv_hw_funcs - hardware sequencer funcs for dmub
*/ struct dmub_srv_hw_funcs { /* private: internal use only */
/** * struct dmub_srv_create_params - params for dmub service creation * @base_funcs: driver supplied base routines * @hw_funcs: optional overrides for hw funcs * @user_ctx: context data for callback funcs * @asic: driver supplied asic * @fw_version: the current firmware version, if any * @is_virtual: false for hw support only
*/ struct dmub_srv_create_params { struct dmub_srv_base_funcs funcs; struct dmub_srv_hw_funcs *hw_funcs; void *user_ctx; enum dmub_asic asic;
uint32_t fw_version; bool is_virtual; enum dmub_inbox_cmd_interface_type inbox_type;
};
/** * struct dmub_srv - software state for dmcub * @asic: dmub asic identifier * @user_ctx: user provided context for the dmub_srv * @fw_version: the current firmware version, if any * @is_virtual: false if hardware support only * @shared_state: dmub shared state between firmware and driver * @fw_state: dmub firmware state pointer
*/ struct dmub_srv { enum dmub_asic asic; void *user_ctx;
uint32_t fw_version; bool is_virtual; struct dmub_fb scratch_mem_fb; struct dmub_fb ib_mem_gart; volatilestruct dmub_shared_state_feature_block *shared_state; volatileconststruct dmub_fw_state *fw_state;
/* private: internal use only */ conststruct dmub_srv_common_regs *regs; conststruct dmub_srv_dcn31_regs *regs_dcn31; struct dmub_srv_dcn32_regs *regs_dcn32; struct dmub_srv_dcn35_regs *regs_dcn35; conststruct dmub_srv_dcn401_regs *regs_dcn401; struct dmub_srv_base_funcs funcs; struct dmub_srv_hw_funcs hw_funcs; struct dmub_srv_inbox inbox1;
uint32_t inbox1_last_wptr; struct dmub_srv_inbox reg_inbox0; /** * outbox1_rb is accessed without locks (dal & dc) * and to be used only in dmub_srv_stat_get_notification()
*/ struct dmub_rb outbox1_rb;
/** * struct dmub_notification - dmub notification data * @type: dmub notification type * @link_index: link index to identify aux connection * @result: USB4 status returned from dmub * @pending_notification: Indicates there are other pending notifications * @aux_reply: aux reply * @hpd_status: hpd status * @bw_alloc_reply: BW Allocation reply from CM/DPIA
*/ struct dmub_notification { enum dmub_notification_type type;
uint8_t link_index;
uint8_t result; bool pending_notification; union { struct aux_reply_data aux_reply; enum dp_hpd_status hpd_status; enum set_config_status sc_status; struct dmub_rb_cmd_hpd_sense_notify_data hpd_sense_notify; struct dmub_cmd_fused_request fused_request;
};
};
/** * DMUB firmware version helper macro - useful for checking if the version * of a firmware to know if feature or functionality is supported or present.
*/ #define DMUB_FW_VERSION(major, minor, revision) \
((((major) & 0xFF) << 24) | (((minor) & 0xFF) << 16) | (((revision) & 0xFF) << 8))
/** * dmub_srv_create() - creates the DMUB service. * @dmub: the dmub service * @params: creation parameters for the service * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_create(struct dmub_srv *dmub, conststruct dmub_srv_create_params *params);
/** * dmub_srv_destroy() - destroys the DMUB service. * @dmub: the dmub service
*/ void dmub_srv_destroy(struct dmub_srv *dmub);
/** * dmub_srv_calc_region_info() - retreives region info from the dmub service * @dmub: the dmub service * @params: parameters used to calculate region locations * @info_out: the output region info from dmub * * Calculates the base and top address for all relevant dmub regions * using the parameters given (if any). * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status
dmub_srv_calc_region_info(struct dmub_srv *dmub, conststruct dmub_srv_region_params *params, struct dmub_srv_region_info *out);
/** * dmub_srv_calc_region_info() - retreives fb info from the dmub service * @dmub: the dmub service * @params: parameters used to calculate fb locations * @info_out: the output fb info from dmub * * Calculates the base and top address for all relevant dmub regions * using the parameters given (if any). * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_calc_mem_info(struct dmub_srv *dmub, conststruct dmub_srv_memory_params *params, struct dmub_srv_fb_info *out);
/** * dmub_srv_has_hw_support() - returns hw support state for dmcub * @dmub: the dmub service * @is_supported: hw support state * * Queries the hardware for DMCUB support and returns the result. * * Can be called before dmub_srv_hw_init(). * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_has_hw_support(struct dmub_srv *dmub, bool *is_supported);
/** * dmub_srv_hw_init() - initializes the underlying DMUB hardware * @dmub: the dmub service * @params: params for hardware initialization * * Resets the DMUB hardware and performs backdoor loading of the * required cache regions based on the input framebuffer regions. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_NO_CTX - dmcub context not initialized * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub, conststruct dmub_srv_hw_params *params);
/** * dmub_srv_hw_reset() - puts the DMUB hardware in reset state if initialized * @dmub: the dmub service * * Before destroying the DMUB service or releasing the backing framebuffer * memory we'll need to put the DMCUB into reset first. * * A subsequent call to dmub_srv_hw_init() will re-enable the DMCUB. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_hw_reset(struct dmub_srv *dmub);
/** * dmub_srv_fb_cmd_queue() - queues a command to the DMUB * @dmub: the dmub service * @cmd: the command to queue * * Queues a command to the DMUB service but does not begin execution * immediately. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_QUEUE_FULL - no remaining room in queue * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_fb_cmd_queue(struct dmub_srv *dmub, constunion dmub_rb_cmd *cmd);
/** * dmub_srv_fb_cmd_execute() - Executes a queued sequence to the dmub * @dmub: the dmub service * * Begins execution of queued commands on the dmub. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_fb_cmd_execute(struct dmub_srv *dmub);
/** * dmub_srv_wait_for_hw_pwr_up() - Waits for firmware hardware power up is completed * @dmub: the dmub service * @timeout_us: the maximum number of microseconds to wait * * Waits until firmware hardware is powered up. The maximum * wait time is given in microseconds to prevent spinning forever. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_TIMEOUT - timed out * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_wait_for_hw_pwr_up(struct dmub_srv *dmub,
uint32_t timeout_us);
/** * dmub_srv_wait_for_auto_load() - Waits for firmware auto load to complete * @dmub: the dmub service * @timeout_us: the maximum number of microseconds to wait * * Waits until firmware has been autoloaded by the DMCUB. The maximum * wait time is given in microseconds to prevent spinning forever. * * On ASICs without firmware autoload support this function will return * immediately. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_TIMEOUT - wait for phy init timed out * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_wait_for_auto_load(struct dmub_srv *dmub,
uint32_t timeout_us);
/** * dmub_srv_wait_for_phy_init() - Waits for DMUB PHY init to complete * @dmub: the dmub service * @timeout_us: the maximum number of microseconds to wait * * Waits until the PHY has been initialized by the DMUB. The maximum * wait time is given in microseconds to prevent spinning forever. * * On ASICs without PHY init support this function will return * immediately. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_TIMEOUT - wait for phy init timed out * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_wait_for_phy_init(struct dmub_srv *dmub,
uint32_t timeout_us);
/** * dmub_srv_wait_for_pending() - Re-entrant wait for messages currently pending * @dmub: the dmub service * @timeout_us: the maximum number of microseconds to wait * * Waits until the commands queued prior to this call are complete. * If interfaces remain busy due to additional work being submitted * concurrently, this function will not continue to wait. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_TIMEOUT - wait for buffer to flush timed out * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_wait_for_pending(struct dmub_srv *dmub,
uint32_t timeout_us);
/** * dmub_srv_wait_for_idle() - Waits for the DMUB to be idle * @dmub: the dmub service * @timeout_us: the maximum number of microseconds to wait * * Waits until the DMUB buffer is empty and all commands have * finished processing. The maximum wait time is given in * microseconds to prevent spinning forever. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_TIMEOUT - wait for buffer to flush timed out * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_wait_for_idle(struct dmub_srv *dmub,
uint32_t timeout_us);
/** * dmub_srv_send_gpint_command() - Sends a GPINT based command. * @dmub: the dmub service * @command_code: the command code to send * @param: the command parameter to send * @timeout_us: the maximum number of microseconds to wait * * Sends a command via the general purpose interrupt (GPINT). * Waits for the number of microseconds specified by timeout_us * for the command ACK before returning. * * Can be called after software initialization. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_TIMEOUT - wait for ACK timed out * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status
dmub_srv_send_gpint_command(struct dmub_srv *dmub, enum dmub_gpint_command command_code,
uint16_t param, uint32_t timeout_us);
/** * dmub_srv_get_gpint_response() - Queries the GPINT response. * @dmub: the dmub service * @response: the response for the last GPINT * * Returns the response code for the last GPINT interrupt. * * Can be called after software initialization. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_get_gpint_response(struct dmub_srv *dmub,
uint32_t *response);
/** * dmub_srv_get_gpint_dataout() - Queries the GPINT DATAOUT. * @dmub: the dmub service * @dataout: the data for the GPINT DATAOUT * * Returns the response code for the last GPINT DATAOUT interrupt. * * Can be called after software initialization. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_get_gpint_dataout(struct dmub_srv *dmub,
uint32_t *dataout);
/** * dmub_flush_buffer_mem() - Read back entire frame buffer region. * This ensures that the write from x86 has been flushed and will not * hang the DMCUB. * @fb: frame buffer to flush * * Can be called after software initialization.
*/ void dmub_flush_buffer_mem(conststruct dmub_fb *fb);
/** * dmub_srv_get_fw_boot_status() - Returns the DMUB boot status bits. * * @dmub: the dmub service * @status: out pointer for firmware status * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - unspecified error, unsupported
*/ enum dmub_status dmub_srv_get_fw_boot_status(struct dmub_srv *dmub, union dmub_fw_boot_status *status);
enum dmub_status dmub_srv_get_fw_boot_option(struct dmub_srv *dmub, union dmub_fw_boot_options *option);
/** * dmub_srv_send_inbox0_cmd() - Send command to DMUB using INBOX0 * @dmub: the dmub service * @data: the data to be sent in the INBOX0 command * * Send command by writing directly to INBOX0 WPTR * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - hw_init false or hw function does not exist
*/ enum dmub_status dmub_srv_send_inbox0_cmd(struct dmub_srv *dmub, union dmub_inbox0_data_register data);
/** * dmub_srv_wait_for_inbox0_ack() - wait for DMUB to ACK INBOX0 command * @dmub: the dmub service * @timeout_us: the maximum number of microseconds to wait * * Wait for DMUB to ACK the INBOX0 message * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - hw_init false or hw function does not exist * DMUB_STATUS_TIMEOUT - wait for ack timed out
*/ enum dmub_status dmub_srv_wait_for_inbox0_ack(struct dmub_srv *dmub, uint32_t timeout_us);
/** * dmub_srv_wait_for_inbox0_ack() - clear ACK register for INBOX0 * @dmub: the dmub service * * Clear ACK register for INBOX0 * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - hw_init false or hw function does not exist
*/ enum dmub_status dmub_srv_clear_inbox0_ack(struct dmub_srv *dmub);
/** * dmub_srv_subvp_save_surf_addr() - Save primary and meta address for subvp on each flip * @dmub: The dmub service * @addr: The surface address to be programmed on the current flip * @subvp_index: Index of subvp pipe, indicates which subvp pipe the address should be saved for * * Function to save the surface flip addr into scratch registers. This is to fix a race condition * between FW and driver reading / writing to the surface address at the same time. This is * required because there is no EARLIEST_IN_USE_META. * * Return: * void
*/ void dmub_srv_subvp_save_surf_addr(struct dmub_srv *dmub, conststruct dc_plane_address *addr, uint8_t subvp_index);
/** * dmub_srv_set_power_state() - Track DC power state in dmub_srv * @dmub: The dmub service * @power_state: DC power state setting * * Store DC power state in dmub_srv. If dmub_srv is in D3, then don't send messages to DMUB * * Return: * void
*/ void dmub_srv_set_power_state(struct dmub_srv *dmub, enum dmub_srv_power_state_type dmub_srv_power_state);
/** * dmub_srv_reg_cmd_execute() - Executes provided command to the dmub * @dmub: the dmub service * @cmd: the command packet to be executed * * Executes a single command for the dmub. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_reg_cmd_execute(struct dmub_srv *dmub, union dmub_rb_cmd *cmd);
/** * dmub_srv_cmd_get_response() - Copies return data for command into buffer * @dmub: the dmub service * @cmd_rsp: response buffer * * Copies return data for command into buffer
*/ void dmub_srv_cmd_get_response(struct dmub_srv *dmub, union dmub_rb_cmd *cmd_rsp);
/** * dmub_srv_sync_inboxes() - Sync inbox state * @dmub: the dmub service * * Sync inbox state * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_sync_inboxes(struct dmub_srv *dmub);
/** * dmub_srv_wait_for_inbox_free() - Waits for space in the DMUB inbox to free up * @dmub: the dmub service * @timeout_us: the maximum number of microseconds to wait * @num_free_required: number of free entries required * * Waits until the DMUB buffer is freed to the specified number. * The maximum wait time is given in microseconds to prevent spinning * forever. * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_TIMEOUT - wait for buffer to flush timed out * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_wait_for_inbox_free(struct dmub_srv *dmub,
uint32_t timeout_us,
uint32_t num_free_required);
/** * dmub_srv_update_inbox_status() - Updates pending status for inbox & reg inbox0 * @dmub: the dmub service * * Return: * DMUB_STATUS_OK - success * DMUB_STATUS_TIMEOUT - wait for buffer to flush timed out * DMUB_STATUS_HW_FAILURE - issue with HW programming * DMUB_STATUS_INVALID - unspecified error
*/ enum dmub_status dmub_srv_update_inbox_status(struct dmub_srv *dmub);
#endif/* _DMUB_SRV_H_ */
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