SIOP(4) - Device Drivers Manual

SIOP(4) - Device Drivers Manual #

SIOP(4) - Device Drivers Manual

NAME #

siop - LSI/Symbios Logic/NCR 53c8xx SCSI interface

SYNOPSIS #

siop* at pci?

# hppa siop* at mainbus? irq 3 siop* at phantomas? irq 3 siop* at uturn? irq 3

DESCRIPTION #

The siop driver provides support for following LSI/Symbios Logic/NCR 53c8xx and related SCSI controller chips:

  • 53c720 and 53c770 (Fast-Wide SCSI)
  • 53c810, 53c810a and 53c815 (Fast SCSI)
  • 53c820, 53c825 and 53c825a (Fast-Wide SCSI)
  • 53c860 (Ultra SCSI)
  • 53c875 and 53c875j (Ultra-Wide SCSI)
  • 53c876 (Dual Ultra-Wide SCSI)
  • 53c885 (Ultra-Wide SCSI and Ethernet)
  • 53c895 and 53c895a (Ultra2-Wide SCSI)
  • 53c896 (PCI 64bit, dual Ultra2-Wide SCSI)
  • 53c1010 (PCI 64bit, dual Ultra3-Wide SCSI. NOTE: at this time siop supports at most Ultra2-Wide with this chip)
  • 53c1510D (dual Ultra2-Wide SCSI)

siop replaces the older ncr driver which supported most of these devices.

Older 53C700 and 53C710 controllers are supported by the [oosiop(4)](/man/man4/oosiop.4) and osiop(4) drivers, respectively.

SEE ALSO #

cd(4), ch(4), intro(4), [oosiop(4)](/man/man4/oosiop.4), osiop(4), pci(4), scsi(4), sd(4), st(4), uk(4)

HISTORY #

The siop driver first appeared in NetBSD 1.5, OpenBSD support was added in OpenBSD 2.9.

AUTHORS #

The siop driver was written by Manuel Bouyer <Manuel.Bouyer@lip6.fr> for NetBSD. It was ported to OpenBSD with 53c1010 support added by Ken Westerback <krw@openbsd.org> using code from the FreeBSD sym-2 driver written by Gerard Roudier <groudier@FreeBSD.org>.

OpenBSD 7.5 - February 17, 2022