STPCIDE(4) BSD Kernel Interfaces Manual STPCIDE(4)NAMEstpcide — STMicroelectronics STPC IDE disk controllers driver
SYNOPSIS
stpcide* at pci? dev ? function ? flags 0x0000
DESCRIPTION
The stpcide driver supports the STMicroelectronics STPC x86 SoC internal
IDE controllers, and provides the interface with the hardware for the
ata(4) driver. The driver features DMA mode 2 and PIO mode 4 transfer
speeds.
The 0x0002 flag forces the stpcide 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 ALSOata(4), atapi(4), intro(4), pci(4), pciide(4), wd(4), wdc(4)BUGS
The timings used for the DMA and PIO modes are for STPC Atlas and its
siblings with their PCI clock configured at 33 MHz. Other speeds includ‐
ing the STPC Vega Ultra-IDE controller will need adjustments.
BSD October 31, 2003 BSD