SCO OpenServer

Sdevreg(D4osdi)

Sdevreg -- SCSI peripheral device registration structure

Synopsis

   #include <sys/types.h>
   #include <devreg.h>

Usage

Sdevreg is passed to the Sdevregister(D3osdi) function with information for registering a SCSI peripheral device.

   struct Sdevreg {
   	struct	Sdevreg	*forw;
   	struct 	Sdevreg *back;	
   
   	struct 	scsi_dev_cfg *cfg;	
   	int	(*init)();		
   	int	(*init2)();	
   	int	reg_type;
   }

Structure members

The structure members are defined as:

forw and back

Forward and backward pointers used internally. Drivers should set these to 0.

cfg

Pointer to the scsi_dev_cfg(D4osdi) configuration array.

init

Passes the address of the peripheral driver's init(D2osdi) entry point routine that runs before the default host adapter has been chosen and initialized.

init2

Passes the address of the peripheral driver's init2(D2osdi) entry point routine that is called after the default host adapter has been chosen and initialized, but before interrupts are enabled.

reg_type

Defines the type of peripheral device controlled:

SCSI_DEV_DISK: for direct access (disk).
SCSI_DEV_PRNTR: for a printer.
SCSI_DEV_PROCR: for a processor.
SCSI_DEV_RODA: for a CD-ROM drive.
SCSI_DEV_TAPE: for sequential access (tape).
SCSI_DEV_WORM: for a Write-Once, Read-Many (WORM) drive.

References

Sdevregister(D3osdi)