OSIOP(4) Kernel Interfaces Manual OSIOP(4)
NAME
osiopSymbios/NCR 53C710 SCSI driver
SYNOPSIS
arc
osiop* at jazzio? flags 0x00000
ews4800mips
osiop* at sbdio? flags 0x00000
hp700
osiop0 at gsc? flags 0x00000
mvme68k
osiop0 at pcctwo? ipl 2
 
scsibus* at osiop?
DESCRIPTION
The osiop driver provides support for the Symbios/NCR 53C710 SCSI controller chip.
 
For the Symbios/NCR 53C700 SCSI host adapters, use the oosiop(4) driver.
 
For the Symbios/NCR 53C8xx PCI SCSI host adapters, use the siop(4) or esiop(4) driver.
CONFIGURATION
The osiop driver supports the following flags for use in config(1) 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
HISTORY
osiop driver first appeared in NetBSD 1.6.
 
The original NCR 53C710 driver appeared in NetBSD 1.0 amiga port, and Izumi Tsutsui <tsutsui@NetBSD.org> modified the driver and made it machine-independent.