OSIOP(4) FreeBSD Kernel Interfaces Manual OSIOP(4)
NAME
osiop - Symbios/NCR 53C710 SCSI driver
SYNOPSIS
osiop* at gsc? irq 9 (hppa)
DESCRIPTION
The osiop driver provides support for the Symbios/NCR 53C710 SCSI
controller chip.
The Symbios/NCR 53C700 SCSI controller is handled by the oosiop(4)
driver, while the Symbios/NCR 53C8xx PCI SCSI host adapters are handled
by the siop(4) driver.
CONFIGURATION
The osiop driver supports the following flags for use in config(8) files:
bits 0-7: disable disconnect/reselect for the corresponding SCSI target
bits 8-15: disable synchronous negotiation for SCSI target
bits 16: disable DMA interrupts
"Target" is synonymous with SCSI ID number.
Note that SCSI tape drives should be allowed to perform
disconnect/reselect or performance will suffer.
SEE ALSO
cd(4), ch(4), intro(4), oosiop(4), scsi(4), sd(4), siop(4), st(4), uk(4)
HISTORY
The osiop driver first appeared in NetBSD 1.6.
The original NCR 53C710 driver appeared in NetBSD 1.0 amiga port, and
Izumi Tsutsui <
[email protected]> modified the driver and made it
machine-independent.
FreeBSD 14.1-RELEASE-p8 February 17, 2022 FreeBSD 14.1-RELEASE-p8