PIIX_SET_PIOMODE(9) ata_piix Internals PIIX_SET_PIOMODE(9)NAME
piix_set_piomode - Initialize host controller PATA PIO timings
SYNOPSIS
void piix_set_piomode(struct ata_port * ap, struct ata_device * adev);
ARGUMENTS
ap
Port whose timings we are configuring
adev
Drive in question
DESCRIPTION
Set PIO mode for device, in host controller PCI config space.
LOCKING
None (inherited from caller).
AUTHOR
Jeff Garzik
Author.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 PIIX_SET_PIOMODE(9)
Check Out this Related Man Page
NJATA(4) BSD Kernel Interfaces Manual NJATA(4)NAME
njata -- Workbit NinjaATA-32 CardBus IDE controller driver
SYNOPSIS
njata* at cardbus? function ?
njata* at cardbus? function ? flags 0x01 # with wait 0x01
DESCRIPTION
The njata driver provides support for the following Workbit Bus-Master CardBus IDE controller chips:
NinjaATA-32Bi CardBus / PCMCIA dual mode IDE controller (``DuoATA''). This controller is mainly used for portable drives. This
driver supports the CardBus mode.
NPATA-32 CardBus IDE controller. This controller is widely used for CardBus CompactFlash adapters.
These controllers are capable of bus-mastering for ATA PIO transfer. The njata driver uses the bus-mastering PIO transfer unless transfer
buffer is unaligned, and significantly reduces CPU usage for PIO-only ATA devices compared with usual PIO transfer.
CONFIGURATION
The optional flags parameter is the ``wait'' value for ATA transfers. Some combinations of host and device may fail without flags parameter
or flags 0x00. In this case try adding wait values like flags 0x01 or flags 0x11 (the wait parameter is composed of two 4bit values).
Smaller wait values should be faster. Too long waits may cause transfer errors.
SEE ALSO ata(4), atapi(4), cardbus(4), intro(4), wd(4), wdc(4)HISTORY
The njata device driver first appeared in NetBSD 4.0.
AUTHORS
ITOH Yasufumi
BSD September 7, 2006 BSD
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