adsa(HW)

adsa -- Adaptec AIC-7770 family SCSI host adapter subsystem

Description

The Adaptec AIC-7770 family host adapter driver provides a Storage Device Interface (SDI)-compliant interface to any Adaptec Host Adapters based on the Adaptec AIC-7770 family of SCSI controller chips. These devices include AHA-2740/2742, AHA-2740-T/2742-T, and any motherboard implementations using the AIC-7770 SCSI chip.

The Adaptec AIC-7770 family host adapter driver enables SDI-compliant target drivers (such as sd01 and st01) to communicate on the SCSI bus with target controllers and logical units. This allows normal access to mass-storage devices using standard system interfaces and filesystems.

It is also possible for an application to access the SCSI bus subsystem directly by using the pass-through interface. See pt_open(S).

NOTE: Adaptec SCSI controllers cannot be used reliably with Emulex SCSI/ESDI bridge controllers (also known as AT&T DCM/4E). This is due to hardware-induced timing differences between these bridge controllers and any SCSI controllers other than the one that they were designed to be used with. It is not possible to provide a software solution to this problem.

Exercise extreme caution when using the pass-through interface. It is possible to interfere with normal system I/O and cause hangs if pass-through is used to an active device. Pass-through should only be used to a device that is otherwise quiescent.

Files

/usr/include/sys/adsa.h
/usr/include/sys/scsi.h
/usr/include/sys/sdi.h
/usr/include/sys/sdi_edt.h
/usr/include/sys/sdi_comm.h
/etc/conf/pack.d/adsa/space.c

References

adsc(HW), adse(HW), adss(HW), dpt(HW), ioctl(S), mcis(HW), sc01(HW), sd01(HW), sdi(HW), st01(HW), sw01(HW), wd7000(HW)