Quelle hw.h
Sprache: C
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright ( c ) 2003 - 2022 , Intel Corporation . All rights reserved
* Intel Management Engine Interface ( Intel MEI ) Linux driver
*/
#ifndef _MEI_HW_TYPES_H_
#define _MEI_HW_TYPES_H_
#include <linux/mei.h>
/*
* Timeouts in Seconds
*/
#define MEI_HW_READY_TIMEOUT 2 /* Timeout on ready message */
#define MEI_CONNECT_TIMEOUT 3 /* HPS: at least 2 seconds */
#define MEI_CL_CONNECT_TIMEOUT 15 /* HPS: Client Connect Timeout */
#define MEI_CL_CONNECT_TIMEOUT_SLOW 30 /* HPS: Client Connect Timeout, slow FW */
#define MEI_CLIENTS_INIT_TIMEOUT 15 /* HPS: Clients Enumeration Timeout */
#define MEI_PGI_TIMEOUT 1 /* PG Isolation time response 1 sec */
#define MEI_D0I3_TIMEOUT 5 /* D0i3 set/unset max response time */
#define MEI_HBM_TIMEOUT 1 /* 1 second */
#define MEI_HBM_TIMEOUT_SLOW 5 /* 5 second, slow FW */
#define MKHI_RCV_TIMEOUT 500 /* receive timeout in msec */
#define MKHI_RCV_TIMEOUT_SLOW 10000 /* receive timeout in msec, slow FW */
/*
* FW page size for DMA allocations
*/
#define MEI_FW_PAGE_SIZE 4096 UL
/*
* MEI Version
*/
#define HBM_MINOR_VERSION 2
#define HBM_MAJOR_VERSION 2
/*
* MEI version with PGI support
*/
#define HBM_MINOR_VERSION_PGI 1
#define HBM_MAJOR_VERSION_PGI 1
/*
* MEI version with Dynamic clients support
*/
#define HBM_MINOR_VERSION_DC 0
#define HBM_MAJOR_VERSION_DC 2
/*
* MEI version with immediate reply to enum request support
*/
#define HBM_MINOR_VERSION_IE 0
#define HBM_MAJOR_VERSION_IE 2
/*
* MEI version with disconnect on connection timeout support
*/
#define HBM_MINOR_VERSION_DOT 0
#define HBM_MAJOR_VERSION_DOT 2
/*
* MEI version with notification support
*/
#define HBM_MINOR_VERSION_EV 0
#define HBM_MAJOR_VERSION_EV 2
/*
* MEI version with fixed address client support
*/
#define HBM_MINOR_VERSION_FA 0
#define HBM_MAJOR_VERSION_FA 2
/*
* MEI version with OS ver message support
*/
#define HBM_MINOR_VERSION_OS 0
#define HBM_MAJOR_VERSION_OS 2
/*
* MEI version with dma ring support
*/
#define HBM_MINOR_VERSION_DR 1
#define HBM_MAJOR_VERSION_DR 2
/*
* MEI version with vm tag support
*/
#define HBM_MINOR_VERSION_VT 2
#define HBM_MAJOR_VERSION_VT 2
/*
* MEI version with GSC support
*/
#define HBM_MINOR_VERSION_GSC 2
#define HBM_MAJOR_VERSION_GSC 2
/*
* MEI version with capabilities message support
*/
#define HBM_MINOR_VERSION_CAP 2
#define HBM_MAJOR_VERSION_CAP 2
/*
* MEI version with client DMA support
*/
#define HBM_MINOR_VERSION_CD 2
#define HBM_MAJOR_VERSION_CD 2
/* Host bus message command opcode */
#define MEI_HBM_CMD_OP_MSK 0 x7f
/* Host bus message command RESPONSE */
#define MEI_HBM_CMD_RES_MSK 0 x80
/*
* MEI Bus Message Command IDs
*/
#define HOST_START_REQ_CMD 0 x01
#define HOST_START_RES_CMD 0 x81
#define HOST_STOP_REQ_CMD 0 x02
#define HOST_STOP_RES_CMD 0 x82
#define ME_STOP_REQ_CMD 0 x03
#define HOST_ENUM_REQ_CMD 0 x04
#define HOST_ENUM_RES_CMD 0 x84
#define HOST_CLIENT_PROPERTIES_REQ_CMD 0 x05
#define HOST_CLIENT_PROPERTIES_RES_CMD 0 x85
#define CLIENT_CONNECT_REQ_CMD 0 x06
#define CLIENT_CONNECT_RES_CMD 0 x86
#define CLIENT_DISCONNECT_REQ_CMD 0 x07
#define CLIENT_DISCONNECT_RES_CMD 0 x87
#define MEI_FLOW_CONTROL_CMD 0 x08
#define MEI_PG_ISOLATION_ENTRY_REQ_CMD 0 x0a
#define MEI_PG_ISOLATION_ENTRY_RES_CMD 0 x8a
#define MEI_PG_ISOLATION_EXIT_REQ_CMD 0 x0b
#define MEI_PG_ISOLATION_EXIT_RES_CMD 0 x8b
#define MEI_HBM_ADD_CLIENT_REQ_CMD 0 x0f
#define MEI_HBM_ADD_CLIENT_RES_CMD 0 x8f
#define MEI_HBM_NOTIFY_REQ_CMD 0 x10
#define MEI_HBM_NOTIFY_RES_CMD 0 x90
#define MEI_HBM_NOTIFICATION_CMD 0 x11
#define MEI_HBM_DMA_SETUP_REQ_CMD 0 x12
#define MEI_HBM_DMA_SETUP_RES_CMD 0 x92
#define MEI_HBM_CAPABILITIES_REQ_CMD 0 x13
#define MEI_HBM_CAPABILITIES_RES_CMD 0 x93
#define MEI_HBM_CLIENT_DMA_MAP_REQ_CMD 0 x14
#define MEI_HBM_CLIENT_DMA_MAP_RES_CMD 0 x94
#define MEI_HBM_CLIENT_DMA_UNMAP_REQ_CMD 0 x15
#define MEI_HBM_CLIENT_DMA_UNMAP_RES_CMD 0 x95
/*
* MEI Stop Reason
* used by hbm_host_stop_request . reason
*/
enum mei_stop_reason_types {
DRIVER_STOP_REQUEST = 0 x00,
DEVICE_D1_ENTRY = 0 x01,
DEVICE_D2_ENTRY = 0 x02,
DEVICE_D3_ENTRY = 0 x03,
SYSTEM_S1_ENTRY = 0 x04,
SYSTEM_S2_ENTRY = 0 x05,
SYSTEM_S3_ENTRY = 0 x06,
SYSTEM_S4_ENTRY = 0 x07,
SYSTEM_S5_ENTRY = 0 x08
};
/**
* enum mei_hbm_status - mei host bus messages return values
*
* @ MEI_HBMS_SUCCESS : status success
* @ MEI_HBMS_CLIENT_NOT_FOUND : client not found
* @ MEI_HBMS_ALREADY_EXISTS : connection already established
* @ MEI_HBMS_REJECTED : connection is rejected
* @ MEI_HBMS_INVALID_PARAMETER : invalid parameter
* @ MEI_HBMS_NOT_ALLOWED : operation not allowed
* @ MEI_HBMS_ALREADY_STARTED : system is already started
* @ MEI_HBMS_NOT_STARTED : system not started
*
* @ MEI_HBMS_MAX : sentinel
*/
enum mei_hbm_status {
MEI_HBMS_SUCCESS = 0 ,
MEI_HBMS_CLIENT_NOT_FOUND = 1 ,
MEI_HBMS_ALREADY_EXISTS = 2 ,
MEI_HBMS_REJECTED = 3 ,
MEI_HBMS_INVALID_PARAMETER = 4 ,
MEI_HBMS_NOT_ALLOWED = 5 ,
MEI_HBMS_ALREADY_STARTED = 6 ,
MEI_HBMS_NOT_STARTED = 7 ,
MEI_HBMS_MAX
};
/*
* Client Connect Status
* used by hbm_client_connect_response . status
*/
enum mei_cl_connect_status {
MEI_CL_CONN_SUCCESS = MEI_HBMS_SUCCESS,
MEI_CL_CONN_NOT_FOUND = MEI_HBMS_CLIENT_NOT_FOUND,
MEI_CL_CONN_ALREADY_STARTED = MEI_HBMS_ALREADY_EXISTS,
MEI_CL_CONN_OUT_OF_RESOURCES = MEI_HBMS_REJECTED,
MEI_CL_CONN_MESSAGE_SMALL = MEI_HBMS_INVALID_PARAMETER,
MEI_CL_CONN_NOT_ALLOWED = MEI_HBMS_NOT_ALLOWED,
};
/*
* Client Disconnect Status
*/
enum mei_cl_disconnect_status {
MEI_CL_DISCONN_SUCCESS = MEI_HBMS_SUCCESS
};
/**
* enum mei_ext_hdr_type - extended header type used in
* extended header TLV
*
* @ MEI_EXT_HDR_NONE : sentinel
* @ MEI_EXT_HDR_VTAG : vtag header
* @ MEI_EXT_HDR_GSC : gsc header
*/
enum mei_ext_hdr_type {
MEI_EXT_HDR_NONE = 0 ,
MEI_EXT_HDR_VTAG = 1 ,
MEI_EXT_HDR_GSC = 2 ,
};
/**
* struct mei_ext_hdr - extend header descriptor ( TLV )
* @ type : enum mei_ext_hdr_type
* @ length : length excluding descriptor
*/
struct mei_ext_hdr {
u8 type;
u8 length;
} __packed;
/**
* struct mei_ext_meta_hdr - extend header meta data
* @ count : number of headers
* @ size : total size of the extended header list excluding meta header
* @ reserved : reserved
* @ hdrs : extended headers TLV list
*/
struct mei_ext_meta_hdr {
u8 count;
u8 size;
u8 reserved[2 ];
u8 hdrs[];
} __packed;
/**
* struct mei_ext_hdr_vtag - extend header for vtag
*
* @ hdr : standard extend header
* @ vtag : virtual tag
* @ reserved : reserved
*/
struct mei_ext_hdr_vtag {
struct mei_ext_hdr hdr;
u8 vtag;
u8 reserved;
} __packed;
/*
* Extended header iterator functions
*/
/**
* mei_ext_begin - extended header iterator begin
*
* @ meta : meta header of the extended header list
*
* Return : The first extended header
*/
static inline struct mei_ext_hdr *mei_ext_begin(struct mei_ext_meta_hdr *meta)
{
return (struct mei_ext_hdr *)meta->hdrs;
}
/**
* mei_ext_last - check if the ext is the last one in the TLV list
*
* @ meta : meta header of the extended header list
* @ ext : a meta header on the list
*
* Return : true if ext is the last header on the list
*/
static inline bool mei_ext_last(struct mei_ext_meta_hdr *meta,
struct mei_ext_hdr *ext)
{
return (u8 *)ext >= (u8 *)meta + sizeof (*meta) + (meta->size * 4 );
}
struct mei_gsc_sgl {
u32 low;
u32 high;
u32 length;
} __packed;
#define GSC_HECI_MSG_KERNEL 0
#define GSC_HECI_MSG_USER 1
#define GSC_ADDRESS_TYPE_GTT 0
#define GSC_ADDRESS_TYPE_PPGTT 1
#define GSC_ADDRESS_TYPE_PHYSICAL_CONTINUOUS 2 /* max of 64K */
#define GSC_ADDRESS_TYPE_PHYSICAL_SGL 3
/**
* struct mei_ext_hdr_gsc_h2f - extended header : gsc host to firmware interface
*
* @ hdr : extended header
* @ client_id : GSC_HECI_MSG_KERNEL or GSC_HECI_MSG_USER
* @ addr_type : GSC_ADDRESS_TYPE_ { GTT , PPGTT , PHYSICAL_CONTINUOUS , PHYSICAL_SGL }
* @ fence_id : synchronization marker
* @ input_address_count : number of input sgl buffers
* @ output_address_count : number of output sgl buffers
* @ reserved : reserved
* @ sgl : sg list
*/
struct mei_ext_hdr_gsc_h2f {
struct mei_ext_hdr hdr;
u8 client_id;
u8 addr_type;
u32 fence_id;
u8 input_address_count;
u8 output_address_count;
u8 reserved[2 ];
struct mei_gsc_sgl sgl[];
} __packed;
/**
* struct mei_ext_hdr_gsc_f2h - gsc firmware to host interface
*
* @ hdr : extended header
* @ client_id : GSC_HECI_MSG_KERNEL or GSC_HECI_MSG_USER
* @ reserved : reserved
* @ fence_id : synchronization marker
* @ written : number of bytes written to firmware
*/
struct mei_ext_hdr_gsc_f2h {
struct mei_ext_hdr hdr;
u8 client_id;
u8 reserved;
u32 fence_id;
u32 written;
} __packed;
/**
* mei_ext_next - following extended header on the TLV list
*
* @ ext : current extend header
*
* Context : The function does not check for the overflows ,
* one should call mei_ext_last before .
*
* Return : The following extend header after @ ext
*/
static inline struct mei_ext_hdr *mei_ext_next(struct mei_ext_hdr *ext)
{
return (struct mei_ext_hdr *)((u8 *)ext + (ext->length * 4 ));
}
/**
* mei_ext_hdr_len - get ext header length in bytes
*
* @ ext : extend header
*
* Return : extend header length in bytes
*/
static inline u32 mei_ext_hdr_len(const struct mei_ext_hdr *ext)
{
if (!ext)
return 0 ;
return ext->length * sizeof (u32);
}
/**
* struct mei_msg_hdr - MEI BUS Interface Section
*
* @ me_addr : device address
* @ host_addr : host address
* @ length : message length
* @ reserved : reserved
* @ extended : message has extended header
* @ dma_ring : message is on dma ring
* @ internal : message is internal
* @ msg_complete : last packet of the message
* @ extension : extension of the header
*/
struct mei_msg_hdr {
u32 me_addr:8 ;
u32 host_addr:8 ;
u32 length:9 ;
u32 reserved:3 ;
u32 extended:1 ;
u32 dma_ring:1 ;
u32 internal:1 ;
u32 msg_complete:1 ;
u32 extension[];
} __packed;
/* The length is up to 9 bits */
#define MEI_MSG_MAX_LEN_MASK GENMASK(9 , 0 )
struct mei_bus_message {
u8 hbm_cmd;
u8 data[];
} __packed;
/**
* struct mei_hbm_cl_cmd - client specific host bus command
* CONNECT , DISCONNECT , and FlOW CONTROL
*
* @ hbm_cmd : bus message command header
* @ me_addr : address of the client in ME
* @ host_addr : address of the client in the driver
* @ data : generic data
*/
struct mei_hbm_cl_cmd {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 data;
};
struct hbm_version {
u8 minor_version;
u8 major_version;
} __packed;
struct hbm_host_version_request {
u8 hbm_cmd;
u8 reserved;
struct hbm_version host_version;
} __packed;
struct hbm_host_version_response {
u8 hbm_cmd;
u8 host_version_supported;
struct hbm_version me_max_version;
} __packed;
struct hbm_host_stop_request {
u8 hbm_cmd;
u8 reason;
u8 reserved[2 ];
} __packed;
struct hbm_host_stop_response {
u8 hbm_cmd;
u8 reserved[3 ];
} __packed;
struct hbm_me_stop_request {
u8 hbm_cmd;
u8 reason;
u8 reserved[2 ];
} __packed;
/**
* enum hbm_host_enum_flags - enumeration request flags ( HBM version > = 2 . 0 )
*
* @ MEI_HBM_ENUM_F_ALLOW_ADD : allow dynamic clients add
* @ MEI_HBM_ENUM_F_IMMEDIATE_ENUM : allow FW to send answer immediately
*/
enum hbm_host_enum_flags {
MEI_HBM_ENUM_F_ALLOW_ADD = BIT(0 ),
MEI_HBM_ENUM_F_IMMEDIATE_ENUM = BIT(1 ),
};
/**
* struct hbm_host_enum_request - enumeration request from host to fw
*
* @ hbm_cmd : bus message command header
* @ flags : request flags
* @ reserved : reserved
*/
struct hbm_host_enum_request {
u8 hbm_cmd;
u8 flags;
u8 reserved[2 ];
} __packed;
struct hbm_host_enum_response {
u8 hbm_cmd;
u8 reserved[3 ];
u8 valid_addresses[32 ];
} __packed;
/**
* struct mei_client_properties - mei client properties
*
* @ protocol_name : guid of the client
* @ protocol_version : client protocol version
* @ max_number_of_connections : number of possible connections .
* @ fixed_address : fixed me address ( 0 if the client is dynamic )
* @ single_recv_buf : 1 if all connections share a single receive buffer .
* @ vt_supported : the client support vtag
* @ reserved : reserved
* @ max_msg_length : MTU of the client
*/
struct mei_client_properties {
uuid_le protocol_name;
u8 protocol_version;
u8 max_number_of_connections;
u8 fixed_address;
u8 single_recv_buf:1 ;
u8 vt_supported:1 ;
u8 reserved:6 ;
u32 max_msg_length;
} __packed;
struct hbm_props_request {
u8 hbm_cmd;
u8 me_addr;
u8 reserved[2 ];
} __packed;
struct hbm_props_response {
u8 hbm_cmd;
u8 me_addr;
u8 status;
u8 reserved;
struct mei_client_properties client_properties;
} __packed;
/**
* struct hbm_add_client_request - request to add a client
* might be sent by fw after enumeration has already completed
*
* @ hbm_cmd : bus message command header
* @ me_addr : address of the client in ME
* @ reserved : reserved
* @ client_properties : client properties
*/
struct hbm_add_client_request {
u8 hbm_cmd;
u8 me_addr;
u8 reserved[2 ];
struct mei_client_properties client_properties;
} __packed;
/**
* struct hbm_add_client_response - response to add a client
* sent by the host to report client addition status to fw
*
* @ hbm_cmd : bus message command header
* @ me_addr : address of the client in ME
* @ status : if HBMS_SUCCESS then the client can now accept connections .
* @ reserved : reserved
*/
struct hbm_add_client_response {
u8 hbm_cmd;
u8 me_addr;
u8 status;
u8 reserved;
} __packed;
/**
* struct hbm_power_gate - power gate request / response
*
* @ hbm_cmd : bus message command header
* @ reserved : reserved
*/
struct hbm_power_gate {
u8 hbm_cmd;
u8 reserved[3 ];
} __packed;
/**
* struct hbm_client_connect_request - connect / disconnect request
*
* @ hbm_cmd : bus message command header
* @ me_addr : address of the client in ME
* @ host_addr : address of the client in the driver
* @ reserved : reserved
*/
struct hbm_client_connect_request {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 reserved;
} __packed;
/**
* struct hbm_client_connect_response - connect / disconnect response
*
* @ hbm_cmd : bus message command header
* @ me_addr : address of the client in ME
* @ host_addr : address of the client in the driver
* @ status : status of the request
*/
struct hbm_client_connect_response {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 status;
} __packed;
#define MEI_FC_MESSAGE_RESERVED_LENGTH 5
struct hbm_flow_control {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];
} __packed;
#define MEI_HBM_NOTIFICATION_START 1
#define MEI_HBM_NOTIFICATION_STOP 0
/**
* struct hbm_notification_request - start / stop notification request
*
* @ hbm_cmd : bus message command header
* @ me_addr : address of the client in ME
* @ host_addr : address of the client in the driver
* @ start : start = 1 or stop = 0 asynchronous notifications
*/
struct hbm_notification_request {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 start;
} __packed;
/**
* struct hbm_notification_response - start / stop notification response
*
* @ hbm_cmd : bus message command header
* @ me_addr : address of the client in ME
* @ host_addr : - address of the client in the driver
* @ status : ( mei_hbm_status ) response status for the request
* - MEI_HBMS_SUCCESS : successful stop / start
* - MEI_HBMS_CLIENT_NOT_FOUND : if the connection could not be found .
* - MEI_HBMS_ALREADY_STARTED : for start requests for a previously
* started notification .
* - MEI_HBMS_NOT_STARTED : for stop request for a connected client for whom
* asynchronous notifications are currently disabled .
*
* @ start : start = 1 or stop = 0 asynchronous notifications
* @ reserved : reserved
*/
struct hbm_notification_response {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 status;
u8 start;
u8 reserved[3 ];
} __packed;
/**
* struct hbm_notification - notification event
*
* @ hbm_cmd : bus message command header
* @ me_addr : address of the client in ME
* @ host_addr : address of the client in the driver
* @ reserved : reserved for alignment
*/
struct hbm_notification {
u8 hbm_cmd;
u8 me_addr;
u8 host_addr;
u8 reserved;
} __packed;
/**
* struct hbm_dma_mem_dscr - dma ring
*
* @ addr_hi : the high 32 bits of 64 bit address
* @ addr_lo : the low 32 bits of 64 bit address
* @ size : size in bytes ( must be power of 2 )
*/
struct hbm_dma_mem_dscr {
u32 addr_hi;
u32 addr_lo;
u32 size;
} __packed;
enum {
DMA_DSCR_HOST = 0 ,
DMA_DSCR_DEVICE = 1 ,
DMA_DSCR_CTRL = 2 ,
DMA_DSCR_NUM,
};
/**
* struct hbm_dma_setup_request - dma setup request
*
* @ hbm_cmd : bus message command header
* @ reserved : reserved for alignment
* @ dma_dscr : dma descriptor for HOST , DEVICE , and CTRL
*/
struct hbm_dma_setup_request {
u8 hbm_cmd;
u8 reserved[3 ];
struct hbm_dma_mem_dscr dma_dscr[DMA_DSCR_NUM];
} __packed;
/**
* struct hbm_dma_setup_response - dma setup response
*
* @ hbm_cmd : bus message command header
* @ status : 0 on success ; otherwise DMA setup failed .
* @ reserved : reserved for alignment
*/
struct hbm_dma_setup_response {
u8 hbm_cmd;
u8 status;
u8 reserved[2 ];
} __packed;
/**
* struct hbm_dma_ring_ctrl - dma ring control block
*
* @ hbuf_wr_idx : host circular buffer write index in slots
* @ reserved1 : reserved for alignment
* @ hbuf_rd_idx : host circular buffer read index in slots
* @ reserved2 : reserved for alignment
* @ dbuf_wr_idx : device circular buffer write index in slots
* @ reserved3 : reserved for alignment
* @ dbuf_rd_idx : device circular buffer read index in slots
* @ reserved4 : reserved for alignment
*/
struct hbm_dma_ring_ctrl {
u32 hbuf_wr_idx;
u32 reserved1;
u32 hbuf_rd_idx;
u32 reserved2;
u32 dbuf_wr_idx;
u32 reserved3;
u32 dbuf_rd_idx;
u32 reserved4;
} __packed;
/* virtual tag supported */
#define HBM_CAP_VT BIT(0 )
/* gsc extended header support */
#define HBM_CAP_GSC BIT(1 )
/* client dma supported */
#define HBM_CAP_CD BIT(2 )
/**
* struct hbm_capability_request - capability request from host to fw
*
* @ hbm_cmd : bus message command header
* @ capability_requested : bitmask of capabilities requested by host
*/
struct hbm_capability_request {
u8 hbm_cmd;
u8 capability_requested[3 ];
} __packed;
/**
* struct hbm_capability_response - capability response from fw to host
*
* @ hbm_cmd : bus message command header
* @ capability_granted : bitmask of capabilities granted by FW
*/
struct hbm_capability_response {
u8 hbm_cmd;
u8 capability_granted[3 ];
} __packed;
/**
* struct hbm_client_dma_map_request - client dma map request from host to fw
*
* @ hbm_cmd : bus message command header
* @ client_buffer_id : client buffer id
* @ reserved : reserved
* @ address_lsb : DMA address LSB
* @ address_msb : DMA address MSB
* @ size : DMA size
*/
struct hbm_client_dma_map_request {
u8 hbm_cmd;
u8 client_buffer_id;
u8 reserved[2 ];
u32 address_lsb;
u32 address_msb;
u32 size;
} __packed;
/**
* struct hbm_client_dma_unmap_request - client dma unmap request
* from the host to the firmware
*
* @ hbm_cmd : bus message command header
* @ status : unmap status
* @ client_buffer_id : client buffer id
* @ reserved : reserved
*/
struct hbm_client_dma_unmap_request {
u8 hbm_cmd;
u8 status;
u8 client_buffer_id;
u8 reserved;
} __packed;
/**
* struct hbm_client_dma_response - client dma unmap response
* from the firmware to the host
*
* @ hbm_cmd : bus message command header
* @ status : command status
*/
struct hbm_client_dma_response {
u8 hbm_cmd;
u8 status;
} __packed;
#endif
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