DRP

#include <drp.h>

typedef struct DRP { 
    CHAR   DRP_eyecatch_str[8];  // eye catcher string
    ULONG  DRP_LGN;              // load group number; see below
    PVOID  DRP_aer;              // addr of asynchronous event routine
    PVOID  DRP_ilb;              // address of ILB; see below
    CHAR   DRP_ascii_name[16];   // driver name; see below
    BYTE   DRP_revision;         // driver revision
    ULONG  DRP_feature_code;     // feature code; see below
    USHORT DRP_if_requirements;  // I/F requirements; see below
    UCHAR  DRP_bus_type;         // type of I/O bus; see below
    USHORT DRP_reg_result;       // registration result; see below
    ULONG  DRP_reference_data;   // data to pass with AEP_INITIALIZE
    UCHAR  DRP_reserved1[2];     // reserved
    ULONG  DRP_reserved2[1];     // reserved; must be zero
} DRP, *PDRP;

Contains driver registration packet information.

DRP_eyecatch_str

Eye catcher string. Must be "XXXXXXXX".

DRP_LGN

Load group mask for the driver. Can be a combination of these values:

DRP_IFS	Reserved for IFSMGR.
DRP_FSD	Installable file system layer.
DRP_FSD_EXT_1	FSD extension, for example, DBLSPACE.
DRP_FSD_EXT_2	FSD extension, for example, encryption.
DRP_VOLTRK	Post-volume tracking value added driver.
DRP_CLASS_DRV	Class driver.
DRP_TSD	Type specific driver (TSD).
DRP_VSD_1	Driver is in vendor enhancement layer 1.
DRP_VSD_2	Driver is in vendor enhancement layer 2.
DRP_VSD_3	Driver is in vendor enhancement layer 3.
DRP_SCSI_LAYER	SCSI'izer.
DRP_VSD_4	Driver is in vendor enhancement layer 4.
DRP_VSD_5	Driver is in vendor enhancement layer 5.
DRP_VSD_6	Driver is in vendor enhancement layer 6.
DRP_VSD_7	Driver is in vendor enhancement layer 7.
DRP_VSD_8	Driver is in vendor enhancement layer 8.
DRP_VSD_9	Driver is in vendor enhancement layer 9.
DRP_MISC_PD	Other port drivers.
DRP_NT_MPD	SCSI miniport drivers.
DRP_NT_PD	Windows NT, hardware-independent port driver.
DRP_ESDI_PD	ESDI port driver.
DRP_ESDIEMUL_PD	Port drivers for ESDI emulators.
DRP_ABIOS_PD	ABIOS port driver.
DRP_ABIOS_PREMPT_PD	ABIOS pre-empting port drivers.
DRP_NEC_FLOPPY	NEC floppy driver layer.
DRP_SOC_SER_DRV	Socket service drivers.
DRP_SOC_DRV	Socket drivers.
DRP_IOS_REG	Reserved for IOS registry.

All other values are reserved and must not be used.

DRP_ilb

Virtual address of the ILB structure that receives IOS linkage information.

DRP_ascii_name

16-byte string specifying the name of the driver.

DRP_feature_code

Feature code; must match the feature code in the DVT. Can be a combination of these values:

DRP_FC_SCAN_DOWN	BIOS scans targets from high to low.
DRP_FC_IO_FOR_INQ_AEP	Port driver needs to send I/O through IOP in response to an AEP_DEVICE_INQUIRY function. Results in AEP_CONFIG_DCB function for inquiry DCB.
DRP_FC_HALF_SEC	Notify driver every half second.
DRP_FC_1_SEC	Notify driver every second.
DRP_FC_2_SECS	Notify driver every two seconds.
DRP_FC_4_SECS	Notify driver every four seconds.
DRP_FC_DYNALOAD	Driver was dynamically loaded by IOS.
DRP_FC_NEED_PRELOAD	Driver needs to hook I/O even before the port driver. When set, the AEP_CONFIG_DCB function is received before the port driver.
DRP_FC_NEED_PRE_POST_LOAD	Same as DRP_FC_NEED_PRELOAD except the drive will receive 2 AEP_CONFIG_DCB function calls for each DCB: one call before the port driver, and another after layers before its load group have been initialized. Note that care must be taken not to insert twice into the same DCB.

DRP_if_requirements

I/F requirements. Can be one of these values:

DRP_IF_ISA	Driver supports ISA platforms.
DRP_IF_EISA	Driver supports EISA platforms.
DRP_IF_MCA	Driver supports MCA platforms.
DRP_IF_STD	Driver supports all standard platforms.

DRP_bus_type

Type of I/O bus if port driver. Can be one of these values:

DRP_BT_ESDI	ESDI or ESDI emulator.
DRP_BT_SCSI	SCSI or SCSI emulator.
DRP_BT_FLOPPY	NEC FLOPPY or FLOPPY emulator.
DRP_BT_SMART	Smart device.
DRP_BT_ABIOS	ABIOS or ABIOS emulator.

DRP_reg_result

Registration result. Can be one of these values:

DRP_REMAIN_RESIDENT	Driver should remain resident.
DRP_MINIMIZE	Driver should minimize.
DRP_ABORT	Driver should not load.
DRP_INVALID_LAYER	Bad layer number; abort driver.

DRP_reference_data

Data to pass with subsequent AEP_INITIALIZE functions.