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e5480701d3
kernel/drivers/scsi/megaraid/mbox_defs.h
tqcq e5480701d3 init repo.
2024-07-22 17:22:30 +08:00

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
*
* Linux MegaRAID Unified device driver
*
* Copyright (c) 2003-2004 LSI Logic Corporation.
*
* FILE : mbox_defs.h
*/
#ifndef _MRAID_MBOX_DEFS_H_
#define _MRAID_MBOX_DEFS_H_
#include <linux/types.h>
/*
* Commands and states for mailbox based controllers
*/
#define MBOXCMD_LREAD 0x01
#define MBOXCMD_LWRITE 0x02
#define MBOXCMD_PASSTHRU 0x03
#define MBOXCMD_ADPEXTINQ 0x04
#define MBOXCMD_ADAPTERINQ 0x05
#define MBOXCMD_LREAD64 0xA7
#define MBOXCMD_LWRITE64 0xA8
#define MBOXCMD_PASSTHRU64 0xC3
#define MBOXCMD_EXTPTHRU 0xE3
#define MAIN_MISC_OPCODE 0xA4
#define GET_MAX_SG_SUPPORT 0x01
#define SUPPORT_EXT_CDB 0x16
#define FC_NEW_CONFIG 0xA1
#define NC_SUBOP_PRODUCT_INFO 0x0E
#define NC_SUBOP_ENQUIRY3 0x0F
#define ENQ3_GET_SOLICITED_FULL 0x02
#define OP_DCMD_READ_CONFIG 0x04
#define NEW_READ_CONFIG_8LD 0x67
#define READ_CONFIG_8LD 0x07
#define FLUSH_ADAPTER 0x0A
#define FLUSH_SYSTEM 0xFE
/*
* Command for random deletion of logical drives
*/
#define FC_DEL_LOGDRV 0xA4
#define OP_SUP_DEL_LOGDRV 0x2A
#define OP_GET_LDID_MAP 0x18
#define OP_DEL_LOGDRV 0x1C
/*
* BIOS commands
*/
#define IS_BIOS_ENABLED 0x62
#define GET_BIOS 0x01
#define CHNL_CLASS 0xA9
#define GET_CHNL_CLASS 0x00
#define SET_CHNL_CLASS 0x01
#define CH_RAID 0x01
#define CH_SCSI 0x00
#define BIOS_PVT_DATA 0x40
#define GET_BIOS_PVT_DATA 0x00
/*
* Commands to support clustering
*/
#define GET_TARGET_ID 0x7D
#define CLUSTER_OP 0x70
#define GET_CLUSTER_MODE 0x02
#define CLUSTER_CMD 0x6E
#define RESERVE_LD 0x01
#define RELEASE_LD 0x02
#define RESET_RESERVATIONS 0x03
#define RESERVATION_STATUS 0x04
#define RESERVE_PD 0x05
#define RELEASE_PD 0x06
/*
* Module battery status
*/
#define BATTERY_MODULE_MISSING 0x01
#define BATTERY_LOW_VOLTAGE 0x02
#define BATTERY_TEMP_HIGH 0x04
#define BATTERY_PACK_MISSING 0x08
#define BATTERY_CHARGE_MASK 0x30
#define BATTERY_CHARGE_DONE 0x00
#define BATTERY_CHARGE_INPROG 0x10
#define BATTERY_CHARGE_FAIL 0x20
#define BATTERY_CYCLES_EXCEEDED 0x40
/*
* Physical drive states.
*/
#define PDRV_UNCNF 0
#define PDRV_ONLINE 3
#define PDRV_FAILED 4
#define PDRV_RBLD 5
#define PDRV_HOTSPARE 6
/*
* Raid logical drive states.
*/
#define RDRV_OFFLINE 0
#define RDRV_DEGRADED 1
#define RDRV_OPTIMAL 2
#define RDRV_DELETED 3
/*
* Read, write and cache policies
*/
#define NO_READ_AHEAD 0
#define READ_AHEAD 1
#define ADAP_READ_AHEAD 2
#define WRMODE_WRITE_THRU 0
#define WRMODE_WRITE_BACK 1
#define CACHED_IO 0
#define DIRECT_IO 1
#define MAX_LOGICAL_DRIVES_8LD 8
#define MAX_LOGICAL_DRIVES_40LD 40
#define FC_MAX_PHYSICAL_DEVICES 256
#define MAX_MBOX_CHANNELS 5
#define MAX_MBOX_TARGET 15
#define MBOX_MAX_PHYSICAL_DRIVES MAX_MBOX_CHANNELS*MAX_MBOX_TARGET
#define MAX_ROW_SIZE_40LD 32
#define MAX_ROW_SIZE_8LD 8
#define SPAN_DEPTH_8_SPANS 8
#define SPAN_DEPTH_4_SPANS 4
#define MAX_REQ_SENSE_LEN 0x20
/**
* struct mbox_t - Driver and f/w handshake structure.
* @cmd : firmware command
* @cmdid : command id
* @numsectors : number of sectors to be transferred
* @lba : Logical Block Address on LD
* @xferaddr : DMA address for data transfer
* @logdrv : logical drive number
* @numsge : number of scatter gather elements in sg list
* @resvd : reserved
* @busy : f/w busy, must wait to issue more commands.
* @numstatus : number of commands completed.
* @status : status of the commands completed
* @completed : array of completed command ids.
* @poll : poll and ack sequence
* @ack : poll and ack sequence
*
* The central handshake structure between the driver and the firmware. This
* structure must be allocated by the driver and aligned at 8-byte boundary.
*/
#define MBOX_MAX_FIRMWARE_STATUS 46
typedef struct {
uint8_t cmd;
uint8_t cmdid;
uint16_t numsectors;
uint32_t lba;
uint32_t xferaddr;
uint8_t logdrv;
uint8_t numsge;
uint8_t resvd;
uint8_t busy;
uint8_t numstatus;
uint8_t status;
uint8_t completed[MBOX_MAX_FIRMWARE_STATUS];
uint8_t poll;
uint8_t ack;
} __attribute__ ((packed)) mbox_t;
/**
* mbox64_t - 64-bit extension for the mailbox
* @segment_lo : the low 32-bits of the address of the scatter-gather list
* @segment_hi : the upper 32-bits of the address of the scatter-gather list
* @mbox : 32-bit mailbox, whose xferadder field must be set to
* 0xFFFFFFFF
*
* This is the extension of the 32-bit mailbox to be able to perform DMA
* beyond 4GB address range.
*/
typedef struct {
uint32_t xferaddr_lo;
uint32_t xferaddr_hi;
mbox_t mbox32;
} __attribute__ ((packed)) mbox64_t;
/*
* mailbox structure used for internal commands
*/
typedef struct {
u8 cmd;
u8 cmdid;
u8 opcode;
u8 subopcode;
u32 lba;
u32 xferaddr;
u8 logdrv;
u8 rsvd[3];
u8 numstatus;
u8 status;
} __attribute__ ((packed)) int_mbox_t;
/**
* mraid_passthru_t - passthru structure to issue commands to physical devices
* @timeout : command timeout, 0=6sec, 1=60sec, 2=10min, 3=3hr
* @ars : set if ARS required after check condition
* @islogical : set if command meant for logical devices
* @logdrv : logical drive number if command for LD
* @channel : Channel on which physical device is located
* @target : SCSI target of the device
* @queuetag : unused
* @queueaction : unused
* @cdb : SCSI CDB
* @cdblen : length of the CDB
* @reqsenselen : amount of request sense data to be returned
* @reqsensearea : Sense information buffer
* @numsge : number of scatter-gather elements in the sg list
* @scsistatus : SCSI status of the command completed.
* @dataxferaddr : DMA data transfer address
* @dataxferlen : amount of the data to be transferred.
*/
typedef struct {
uint8_t timeout :3;
uint8_t ars :1;
uint8_t reserved :3;
uint8_t islogical :1;
uint8_t logdrv;
uint8_t channel;
uint8_t target;
uint8_t queuetag;
uint8_t queueaction;
uint8_t cdb[10];
uint8_t cdblen;
uint8_t reqsenselen;
uint8_t reqsensearea[MAX_REQ_SENSE_LEN];
uint8_t numsge;
uint8_t scsistatus;
uint32_t dataxferaddr;
uint32_t dataxferlen;
} __attribute__ ((packed)) mraid_passthru_t;
typedef struct {
uint32_t dataxferaddr_lo;
uint32_t dataxferaddr_hi;
mraid_passthru_t pthru32;
} __attribute__ ((packed)) mega_passthru64_t;
/**
* mraid_epassthru_t - passthru structure to issue commands to physical devices
* @timeout : command timeout, 0=6sec, 1=60sec, 2=10min, 3=3hr
* @ars : set if ARS required after check condition
* @rsvd1 : reserved field
* @cd_rom : (?)
* @rsvd2 : reserved field
* @islogical : set if command meant for logical devices
* @logdrv : logical drive number if command for LD
* @channel : Channel on which physical device is located
* @target : SCSI target of the device
* @queuetag : unused
* @queueaction : unused
* @cdblen : length of the CDB
* @rsvd3 : reserved field
* @cdb : SCSI CDB
* @numsge : number of scatter-gather elements in the sg list
* @status : SCSI status of the command completed.
* @reqsenselen : amount of request sense data to be returned
* @reqsensearea : Sense information buffer
* @rsvd4 : reserved field
* @dataxferaddr : DMA data transfer address
* @dataxferlen : amount of the data to be transferred.
*/
typedef struct {
uint8_t timeout :3;
uint8_t ars :1;
uint8_t rsvd1 :1;
uint8_t cd_rom :1;
uint8_t rsvd2 :1;
uint8_t islogical :1;
uint8_t logdrv;
uint8_t channel;
uint8_t target;
uint8_t queuetag;
uint8_t queueaction;
uint8_t cdblen;
uint8_t rsvd3;
uint8_t cdb[16];
uint8_t numsge;
uint8_t status;
uint8_t reqsenselen;
uint8_t reqsensearea[MAX_REQ_SENSE_LEN];
uint8_t rsvd4;
uint32_t dataxferaddr;
uint32_t dataxferlen;
} __attribute__ ((packed)) mraid_epassthru_t;
/**
* mraid_pinfo_t - product info, static information about the controller
* @data_size : current size in bytes (not including resvd)
* @config_signature : Current value is 0x00282008
* @fw_version : Firmware version
* @bios_version : version of the BIOS
* @product_name : Name given to the controller
* @max_commands : Maximum concurrent commands supported
* @nchannels : Number of SCSI Channels detected
* @fc_loop_present : Number of Fibre Loops detected
* @mem_type : EDO, FPM, SDRAM etc
* @signature :
* @dram_size : In terms of MB
* @subsysid : device PCI subsystem ID
* @subsysvid : device PCI subsystem vendor ID
* @notify_counters :
* @pad1k : 135 + 889 resvd = 1024 total size
*
* This structures holds the information about the controller which is not
* expected to change dynamically.
*
* The current value of config signature is 0x00282008:
* 0x28 = MAX_LOGICAL_DRIVES,
* 0x20 = Number of stripes and
* 0x08 = Number of spans
*/
typedef struct {
uint32_t data_size;
uint32_t config_signature;
uint8_t fw_version[16];
uint8_t bios_version[16];
uint8_t product_name[80];
uint8_t max_commands;
uint8_t nchannels;
uint8_t fc_loop_present;
uint8_t mem_type;
uint32_t signature;
uint16_t dram_size;
uint16_t subsysid;
uint16_t subsysvid;
uint8_t notify_counters;
uint8_t pad1k[889];
} __attribute__ ((packed)) mraid_pinfo_t;
/**
* mraid_notify_t - the notification structure
* @global_counter : Any change increments this counter
* @param_counter : Indicates any params changed
* @param_id : Param modified - defined below
* @param_val : New val of last param modified
* @write_config_counter : write config occurred
* @write_config_rsvd :
* @ldrv_op_counter : Indicates ldrv op started/completed
* @ldrv_opid : ldrv num
* @ldrv_opcmd : ldrv operation - defined below
* @ldrv_opstatus : status of the operation
* @ldrv_state_counter : Indicates change of ldrv state
* @ldrv_state_id : ldrv num
* @ldrv_state_new : New state
* @ldrv_state_old : old state
* @pdrv_state_counter : Indicates change of ldrv state
* @pdrv_state_id : pdrv id
* @pdrv_state_new : New state
* @pdrv_state_old : old state
* @pdrv_fmt_counter : Indicates pdrv format started/over
* @pdrv_fmt_id : pdrv id
* @pdrv_fmt_val : format started/over
* @pdrv_fmt_rsvd :
* @targ_xfer_counter : Indicates SCSI-2 Xfer rate change
* @targ_xfer_id : pdrv Id
* @targ_xfer_val : new Xfer params of last pdrv
* @targ_xfer_rsvd :
* @fcloop_id_chg_counter : Indicates loopid changed
* @fcloopid_pdrvid : pdrv id
* @fcloop_id0 : loopid on fc loop 0
* @fcloop_id1 : loopid on fc loop 1
* @fcloop_state_counter : Indicates loop state changed
* @fcloop_state0 : state of fc loop 0
* @fcloop_state1 : state of fc loop 1
* @fcloop_state_rsvd :
*/
typedef struct {
uint32_t global_counter;
uint8_t param_counter;
uint8_t param_id;
uint16_t param_val;
uint8_t write_config_counter;
uint8_t write_config_rsvd[3];
uint8_t ldrv_op_counter;
uint8_t ldrv_opid;
uint8_t ldrv_opcmd;
uint8_t ldrv_opstatus;
uint8_t ldrv_state_counter;
uint8_t ldrv_state_id;
uint8_t ldrv_state_new;
uint8_t ldrv_state_old;
uint8_t pdrv_state_counter;
uint8_t pdrv_state_id;
uint8_t pdrv_state_new;
uint8_t pdrv_state_old;
uint8_t pdrv_fmt_counter;
uint8_t pdrv_fmt_id;
uint8_t pdrv_fmt_val;
uint8_t pdrv_fmt_rsvd;
uint8_t targ_xfer_counter;
uint8_t targ_xfer_id;
uint8_t targ_xfer_val;
uint8_t targ_xfer_rsvd;
uint8_t fcloop_id_chg_counter;
uint8_t fcloopid_pdrvid;
uint8_t fcloop_id0;
uint8_t fcloop_id1;
uint8_t fcloop_state_counter;
uint8_t fcloop_state0;
uint8_t fcloop_state1;
uint8_t fcloop_state_rsvd;
} __attribute__ ((packed)) mraid_notify_t;
/**
* mraid_inquiry3_t - enquiry for device information
*
* @data_size : current size in bytes (not including resvd)
* @notify :
* @notify_rsvd :
* @rebuild_rate : rebuild rate (0% - 100%)
* @cache_flush_int : cache flush interval in seconds
* @sense_alert :
* @drive_insert_count : drive insertion count
* @battery_status :
* @num_ldrv : no. of Log Drives configured
* @recon_state : state of reconstruct
* @ldrv_op_status : logdrv Status
* @ldrv_size : size of each log drv
* @ldrv_prop :
* @ldrv_state : state of log drives
* @pdrv_state : state of phys drvs.
* @pdrv_format :
* @targ_xfer : phys device transfer rate
* @pad1k : 761 + 263reserved = 1024 bytes total size
*/
#define MAX_NOTIFY_SIZE 0x80
#define CUR_NOTIFY_SIZE sizeof(mraid_notify_t)
typedef struct {
uint32_t data_size;
mraid_notify_t notify;
uint8_t notify_rsvd[MAX_NOTIFY_SIZE - CUR_NOTIFY_SIZE];
uint8_t rebuild_rate;
uint8_t cache_flush_int;
uint8_t sense_alert;
uint8_t drive_insert_count;
uint8_t battery_status;
uint8_t num_ldrv;
uint8_t recon_state[MAX_LOGICAL_DRIVES_40LD / 8];
uint16_t ldrv_op_status[MAX_LOGICAL_DRIVES_40LD / 8];
uint32_t ldrv_size[MAX_LOGICAL_DRIVES_40LD];
uint8_t ldrv_prop[MAX_LOGICAL_DRIVES_40LD];
uint8_t ldrv_state[MAX_LOGICAL_DRIVES_40LD];
uint8_t pdrv_state[FC_MAX_PHYSICAL_DEVICES];
uint16_t pdrv_format[FC_MAX_PHYSICAL_DEVICES / 16];
uint8_t targ_xfer[80];
uint8_t pad1k[263];
} __attribute__ ((packed)) mraid_inquiry3_t;
/**
* mraid_adapinfo_t - information about the adapter
* @max_commands : max concurrent commands supported
* @rebuild_rate : rebuild rate - 0% thru 100%
* @max_targ_per_chan : max targ per channel
* @nchannels : number of channels on HBA
* @fw_version : firmware version
* @age_of_flash : number of times FW has been flashed
* @chip_set_value : contents of 0xC0000832
* @dram_size : in MB
* @cache_flush_interval : in seconds
* @bios_version :
* @board_type :
* @sense_alert :
* @write_config_count : increase with every configuration change
* @drive_inserted_count : increase with every drive inserted
* @inserted_drive : channel:Id of inserted drive
* @battery_status : bit 0: battery module missing
* bit 1: VBAD
* bit 2: temperature high
* bit 3: battery pack missing
* bit 4,5:
* 00 - charge complete
* 01 - fast charge in progress
* 10 - fast charge fail
* 11 - undefined
* bit 6: counter > 1000
* bit 7: Undefined
* @dec_fault_bus_info :
*/
typedef struct {
uint8_t max_commands;
uint8_t rebuild_rate;
uint8_t max_targ_per_chan;
uint8_t nchannels;
uint8_t fw_version[4];
uint16_t age_of_flash;
uint8_t chip_set_value;
uint8_t dram_size;
uint8_t cache_flush_interval;
uint8_t bios_version[4];
uint8_t board_type;
uint8_t sense_alert;
uint8_t write_config_count;
uint8_t battery_status;
uint8_t dec_fault_bus_info;
} __attribute__ ((packed)) mraid_adapinfo_t;
/**
* mraid_ldrv_info_t - information about the logical drives
* @nldrv : Number of logical drives configured
* @rsvd :
* @size : size of each logical drive
* @prop :
* @state : state of each logical drive
*/
typedef struct {
uint8_t nldrv;
uint8_t rsvd[3];
uint32_t size[MAX_LOGICAL_DRIVES_8LD];
uint8_t prop[MAX_LOGICAL_DRIVES_8LD];
uint8_t state[MAX_LOGICAL_DRIVES_8LD];
} __attribute__ ((packed)) mraid_ldrv_info_t;
/**
* mraid_pdrv_info_t - information about the physical drives
* @pdrv_state : state of each physical drive
*/
typedef struct {
uint8_t pdrv_state[MBOX_MAX_PHYSICAL_DRIVES];
uint8_t rsvd;
} __attribute__ ((packed)) mraid_pdrv_info_t;
/**
* mraid_inquiry_t - RAID inquiry, mailbox command 0x05
* @mraid_adapinfo_t : adapter information
* @mraid_ldrv_info_t : logical drives information
* @mraid_pdrv_info_t : physical drives information
*/
typedef struct {
mraid_adapinfo_t adapter_info;
mraid_ldrv_info_t logdrv_info;
mraid_pdrv_info_t pdrv_info;
} __attribute__ ((packed)) mraid_inquiry_t;
/**
* mraid_extinq_t - RAID extended inquiry, mailbox command 0x04
*
* @raid_inq : raid inquiry
* @phys_drv_format :
* @stack_attn :
* @modem_status :
* @rsvd :
*/
typedef struct {
mraid_inquiry_t raid_inq;
uint16_t phys_drv_format[MAX_MBOX_CHANNELS];
uint8_t stack_attn;
uint8_t modem_status;
uint8_t rsvd[2];
} __attribute__ ((packed)) mraid_extinq_t;
/**
* adap_device_t - device information
* @channel : channel fpor the device
* @target : target ID of the device
*/
typedef struct {
uint8_t channel;
uint8_t target;
}__attribute__ ((packed)) adap_device_t;
/**
* adap_span_40ld_t - 40LD span
* @start_blk : starting block
* @num_blks : number of blocks
*/
typedef struct {
uint32_t start_blk;
uint32_t num_blks;
adap_device_t device[MAX_ROW_SIZE_40LD];
}__attribute__ ((packed)) adap_span_40ld_t;
/**
* adap_span_8ld_t - 8LD span
* @start_blk : starting block
* @num_blks : number of blocks
*/
typedef struct {
uint32_t start_blk;
uint32_t num_blks;
adap_device_t device[MAX_ROW_SIZE_8LD];
}__attribute__ ((packed)) adap_span_8ld_t;
/**
* logdrv_param_t - logical drives parameters
*
* @span_depth : total number of spans
* @level : RAID level
* @read_ahead : read ahead, no read ahead, adaptive read ahead
* @stripe_sz : encoded stripe size
* @status : status of the logical drive
* @write_mode : write mode, write_through/write_back
* @direct_io : direct io or through cache
* @row_size : number of stripes in a row
*/
typedef struct {
uint8_t span_depth;
uint8_t level;
uint8_t read_ahead;
uint8_t stripe_sz;
uint8_t status;
uint8_t write_mode;
uint8_t direct_io;
uint8_t row_size;
} __attribute__ ((packed)) logdrv_param_t;
/**
* logdrv_40ld_t - logical drive definition for 40LD controllers
* @lparam : logical drives parameters
* @span : span
*/
typedef struct {
logdrv_param_t lparam;
adap_span_40ld_t span[SPAN_DEPTH_8_SPANS];
}__attribute__ ((packed)) logdrv_40ld_t;
/**
* logdrv_8ld_span8_t - logical drive definition for 8LD controllers
* @lparam : logical drives parameters
* @span : span
*
* 8-LD logical drive with up to 8 spans
*/
typedef struct {
logdrv_param_t lparam;
adap_span_8ld_t span[SPAN_DEPTH_8_SPANS];
}__attribute__ ((packed)) logdrv_8ld_span8_t;
/**
* logdrv_8ld_span4_t - logical drive definition for 8LD controllers
* @lparam : logical drives parameters
* @span : span
*
* 8-LD logical drive with up to 4 spans
*/
typedef struct {
logdrv_param_t lparam;
adap_span_8ld_t span[SPAN_DEPTH_4_SPANS];
}__attribute__ ((packed)) logdrv_8ld_span4_t;
/**
* phys_drive_t - physical device information
* @type : Type of the device
* @cur_status : current status of the device
* @tag_depth : Level of tagging
* @sync_neg : sync negotiation - ENABLE or DISABLE
* @size : configurable size in terms of 512 byte
*/
typedef struct {
uint8_t type;
uint8_t cur_status;
uint8_t tag_depth;
uint8_t sync_neg;
uint32_t size;
}__attribute__ ((packed)) phys_drive_t;
/**
* disk_array_40ld_t - disk array for 40LD controllers
* @numldrv : number of logical drives
* @resvd :
* @ldrv : logical drives information
* @pdrv : physical drives information
*/
typedef struct {
uint8_t numldrv;
uint8_t resvd[3];
logdrv_40ld_t ldrv[MAX_LOGICAL_DRIVES_40LD];
phys_drive_t pdrv[MBOX_MAX_PHYSICAL_DRIVES];
}__attribute__ ((packed)) disk_array_40ld_t;
/**
* disk_array_8ld_span8_t - disk array for 8LD controllers
* @numldrv : number of logical drives
* @resvd :
* @ldrv : logical drives information
* @pdrv : physical drives information
*
* Disk array for 8LD logical drives with up to 8 spans
*/
typedef struct {
uint8_t numldrv;
uint8_t resvd[3];
logdrv_8ld_span8_t ldrv[MAX_LOGICAL_DRIVES_8LD];
phys_drive_t pdrv[MBOX_MAX_PHYSICAL_DRIVES];
}__attribute__ ((packed)) disk_array_8ld_span8_t;
/**
* disk_array_8ld_span4_t - disk array for 8LD controllers
* @numldrv : number of logical drives
* @resvd :
* @ldrv : logical drives information
* @pdrv : physical drives information
*
* Disk array for 8LD logical drives with up to 4 spans
*/
typedef struct {
uint8_t numldrv;
uint8_t resvd[3];
logdrv_8ld_span4_t ldrv[MAX_LOGICAL_DRIVES_8LD];
phys_drive_t pdrv[MBOX_MAX_PHYSICAL_DRIVES];
}__attribute__ ((packed)) disk_array_8ld_span4_t;
/**
* struct private_bios_data - bios private data for boot devices
* @geometry : bits 0-3 - BIOS geometry, 0x0001 - 1GB, 0x0010 - 2GB,
* 0x1000 - 8GB, Others values are invalid
* @unused : bits 4-7 are unused
* @boot_drv : logical drive set as boot drive, 0..7 - for 8LD cards,
* 0..39 - for 40LD cards
* @cksum : 0-(sum of first 13 bytes of this structure)
*/
struct private_bios_data {
uint8_t geometry :4;
uint8_t unused :4;
uint8_t boot_drv;
uint8_t rsvd[12];
uint16_t cksum;
} __attribute__ ((packed));
/**
* mbox_sgl64 - 64-bit scatter list for mailbox based controllers
* @address : address of the buffer
* @length : data transfer length
*/
typedef struct {
uint64_t address;
uint32_t length;
} __attribute__ ((packed)) mbox_sgl64;
/**
* mbox_sgl32 - 32-bit scatter list for mailbox based controllers
* @address : address of the buffer
* @length : data transfer length
*/
typedef struct {
uint32_t address;
uint32_t length;
} __attribute__ ((packed)) mbox_sgl32;
#endif // _MRAID_MBOX_DEFS_H_
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