Kernel Interfaces Manual
NAME ixpide — PCI IDE disk controllers driver
SYNOPSIS ixpide* at pci? dev ? function ? flags 0x0000
driver supports the ATI Technologies IXP IDE controller, and provides the interface with the hardware for the ata(4)
The 0x0002 flag forces the ixpide 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.
The supported IDE controllers are
ATI SB400, Parallel ATA
ATI SB400, Serial ATA
ATI SB700, Serial and Parallel ATA
CAVEATS Some SB700 controllers can hang under load when Native IDE mode is selected in the system BIOS, but work fine in AHCI mode.