OPTIIDE(4) Kernel Interfaces Manual OPTIIDE(4)
optiide -- OPTi IDE disk controllers driver
optiide* at pci? dev ? function ? flags 0x0000
The optiide driver supports the OPTi 82c621, 82c568 and 82d568 IDE
controllers, and provides the interface with the hardware for the ata(4)
The 0x0002 flag forces the optiide driver to disable DMA on chipsets for
which DMA would normally be enabled. This can be used as a debugging
aid, or to work around problems where the IDE controller is wired up to
the system incorrectly.
ata(4), atapi(4), intro(4), pci(4), pciide(4), wd(4), wdc(4)
The timings used for the PIO and DMA modes for controllers listed above
are for a PCI bus running at 25 or 33 MHz. This driver may not work
properly on overclocked systems.
NetBSD 6.1.5 October 8, 2003 NetBSD 6.1.5