njata(4) [netbsd 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

CMDIDE(4)						   BSD Kernel Interfaces Manual 						 CMDIDE(4)

NAME

     cmdide -- CMD Technology and Silicon Image IDE disk controllers driver

SYNOPSIS

     cmdide* at pci? dev ? function ? flags 0x0000
     options PCIIDE_CMD064x_DISABLE
     options PCIIDE_CMD0646U_ENABLEUDMA

DESCRIPTION

     The cmdide driver supports the CMD Technology PCI0640, PCI0643, PCI0646, PCI0648, PCI0649, and Silicon Image 0680 IDE controllers, and pro-
     vides the interface with the hardware for the ata(4) driver.

     The 0x0002 flag forces the cmdide 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.

SEE ALSO

     ata(4), atapi(4), intro(4), pci(4), pciide(4), wd(4), wdc(4)

BUGS

     There's no way to reliably know if a PCI064x controller is enabled or not.  If the driver finds a PCI064x, it will assume it is enabled
     unless the PCIIDE_CMD064x_DISABLE option is specified in the kernel config file.  This will be a problem only if the controller has been dis-
     abled in the BIOS and another controller has been installed and uses the ISA legacy I/O ports and interrupts.

     The PCI0646U controller is known to be buggy with Ultra-DMA transfers, so Ultra-DMA is disabled by default for this controller.  To enable
     Ultra-DMA, use the PCIIDE_CMD0646U_ENABLEUDMA option.  Ultra-DMA can eventually be disabled on a per-drive basis with config flags, see
     wd(4).

     The timings used for the PIO and DMA modes for controllers listed above are for a PCI bus running at 30 or 33 MHz.  This driver may not work
     properly on overclocked systems.

BSD
								 December 13, 2003							       BSD