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Intel chipsets PATA IDE and SATA in IDE mode

Hardware Support

This driver supports the PATA controllers included with the listed intel chipsets:

This driver also supports the SATA controllers in IDE mode included with the listed intel chipsets:

SATA ports in AHCI mode(on chipset models supporting this mode) are driven by the AHCI driver.

PIO, MWDMA, UDMA

All DMA modes are disabled if PIIX4E is attached at 450NX
MWDMA0 is not supported on PATA ports of some ICH
MWDMA1 is broken on PATA ports of some ICH
ICH and PCH supporting AHCI or RAID mode will suffer from SATA port sequence shift when switching from AHCI or RAID to IDE mode and vice versa
Attached storage devices may not be detected on Intel ICH5 series southbridge when all six storage devices are populated
6 Gb/s SATA devices may not be detected on PCH x5x, xx5x, 34x0
SATA devices may not be detected at the 3 Gb/s ports of B2 stepping PCH x6x, xx6x
CE3100 does not support PCI MSI at its SATA controller
PCI MSI is not yet supported at SATA controllers of ICH5 in non combined mode. As a result legacy PCI interrupts are still used

CE3100 Stepping A0 is not supported because workarounds are needed to fix errata:
- DMA burst size must be 64 bytes at most
- SATA PCI header is not completely PCI compatible
- SATA PCI Device ID is wrong
- SATA memory mapped PCI header is wrong

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