amd(7)


amd -- AMD SCSI host adapter subsystem

Description

The amd host adapter driver provides a Storage Device Interface (SDI)-compliant interface to various SCSI solutions based on the Am53C974 PCscsi and Am73C974 PCnet-scsi chips. The Am53C974 is a Bus Mastering Fast SCSI Controller Chip for PCI Systems, whereas the Am73C974 is a combination Ethernet/SCSI controller. The Am53C974 chip is found on the motherboard of various systems and on controller cards from various manufacturers.

The amd 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.

You can access the SCSI-bus subsystem directly by using the driver's pass-through interface. This allows the user to issue sb control blocks directly to a SCSI target device. To find the appropriate pass-through device to use for a particular target device, the user should open(2) the character special file for the device in question and then issue the B_GETDEV ioctl (see ioctl(2)). The device value returned should then be used to create a character special file which, when opened, can be used for pass-through (SDI_SEND ioctl).

ioctl calls

amd supports all of the SDI pass-through ioctl(2) commands documented on the sdi(7) manual page.

Files

/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/amd/space.c

/etc/conf/drvmap.d/amd

References

ioctl(2), sc01(7), sd01(7), sdi(7), st01(7), sw01(7)
30 January 1998
© 1998 The Santa Cruz Operation, Inc. All rights reserved.