viaide(4) [netbsd man page]

VIAIDE(4)						   BSD Kernel Interfaces Manual 						 VIAIDE(4)

NAME

     viaide -- AMD, NVIDIA and VIA IDE disk controllers driver

SYNOPSIS

     viaide* at pci? dev ? function ? flags 0x0000
     options PCIIDE_AMD756_ENABLEDMA

DESCRIPTION

     The viaide driver supports the following IDE controllers and provides the interface with the hardware for the ata driver:
	   -   Advanced Micro Devices AMD-756, 766, 768 and CS5536 IDE Controllers
	   -   NVIDIA nForce, nForce2, nForce2 400, nForce3, nForce3 250, nForce4, MCP04, MCP55, MCP61, MCP65, MCP67 IDE and SATA Controllers.
	   -   VIA Technologies VT82C586, VT82C586A, VT82C596A, VT82C686A, VT8233A, VT8235, VT8237/VT8237R IDE Controllers, VT6421 Serial RAID
	       Controller and CX700 IDE Controller.

     The 0x0002 flag forces the viaide 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)

NOTES

     Drives on the VT6421 Serial RAID Controller can only be accessed after they have been configured into RAID or JBOD sets via its BIOS.  It is
     also inaptly named as it has both SATA and PATA interfaces.

BUGS

     The AMD756 chip revision D2 has a bug affecting DMA (but not Ultra-DMA) modes.  The workaround documented by AMD is to not use DMA on any
     drive which does not support Ultra-DMA modes.  This does not appear to be necessary on all drives, the PCIIDE_AMD756_ENABLEDMA option can be
     used to force multiword DMA on the buggy revisions.  Multiword DMA can eventually be disabled on a per-drive basis with config flags, see
     wd(4).  The bug, if triggered, will cause a total system hang.

     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
								  August 31, 2007							       BSD

PCIIDE(4)						   BSD Kernel Interfaces Manual 						 PCIIDE(4)

NAME

     pciide -- PCI IDE disk controllers driver

SYNOPSIS

     pciide* at pci? dev ? function ? flags 0x0000
     pciide* at pnpbios? index ?

DESCRIPTION

     The pciide driver supports the PCI IDE controllers as specified in the "PCI IDE controller specification, revision 1.0" draft, and provides
     the interface with the hardware for the ata driver.  Please use the chip-specific drivers for the following controllers for enhanced and DMA
     support:
	   -   Acard ATP850 (Ultra/33) and ATP860 (Ultra/66) IDE Controllers: acardide(4)
	   -   Acer labs M5229 IDE Controller: aceride(4)
	   -   Advanced Micro Devices AMD-756, 766, and 768 IDE Controllers: viaide(4)
	   -   Advanced Micro Devices Geode IDE Controllers: geodeide(4)
	   -   CMD Tech PCI0643, PCI0646, PCI0648, and PCI0649 IDE Controllers: cmdide(4)
	   -   Contaq Microsystems/Cypress CY82C693 IDE Controller: cypide(4)
	   -   HighPoint HPT366 Ultra/66, HPT370 Ultra/100, HPT372, and HPT374 Ultra/133 IDE controller: hptide(4)
	   -   Intel PIIX, PIIX3, and PIIX4 IDE Controllers: piixide(4)
	   -   Intel i31244 Serial ATA controller: artsata(4)
	   -   Intel 82801 (ICH/ICH0/ICH2/ICH3/ICH4/ICH5/ICH6) IDE Controllers: piixide(4)
	   -   Intel SCH IDE Controllers: schide(4)
	   -   NVIDIA nForce/nForce2 IDE Controllers: viaide(4)
	   -   OPTi 82c621 (plus a few of its derivatives) IDE Controllers: optiide(4)
	   -   Promise PDC20246 (Ultra/33), PDC20262 (Ultra/66), PDC20265/PDC20267 (Ultra100), PDC20268 (Ultra/100TX2 and Ultra/100TX2v2),
	       Ultra/133, Ultra/133TX2 and Ultra/133TX2v2 PCI IDE controllers: pdcide(4)
	   -   Serverworks K2 SATA controllers: svwsata(4)
	   -   Silicon Image 0680 IDE controller: cmdide(4)
	   -   Silicon Image SATALink 3112 Serial ATA controller: satalink(4)
	   -   Silicon Image SteelVine 3124/3132/3531 Serial ATA II controller: siisata(4)
	   -   Silicon Integrated System 5597/5598 IDE controller: siside(4)
	   -   Symphony Labs 82C105 and Winbond W83C553F IDE controller: slide(4)
	   -   VIA Technologies VT82C586, VT82C586A, VT82C596A, VT82C686A, VT8233A, and VT8235 IDE Controllers: viaide(4)

     The 0x0001 flag forces the pciide driver to use DMA when there is no explicit DMA mode setting support for the controller but DMA is present.
     If the BIOS didn't set up the controller properly, this can cause a machine hang.

     The 0x0002 flag forces the pciide 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

     acardide(4), aceride(4), artsata(4), ata(4), atapi(4), cmdide(4), cypide(4), geodeide(4), hptide(4), intro(4), optiide(4), pci(4), pdcide(4),
     piixide(4), pnpbios(4), satalink(4), schide(4), siisata(4), siside(4), slide(4), viaide(4), wd(4), wdc(4)

BSD
								 November 7, 2010							       BSD