SATA hardware features

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This is an attempt to enumerate key hardware features, as correlated with specific hardware chips and Linux device drivers.

Chip Driver NCQ
ICH5 ata_piix no
ICH6 family ata_piix, ahci only in AHCI mode
ICH7 family ata_piix, ahci only in AHCI mode
ICH8 family ata_piix, ahci only in AHCI mode
ICH9 family ata_piix, ahci only in AHCI mode
ICH10 family ata_piix, ahci only in AHCI mode
Promise 2037x sata_promise no
Promise 2057x sata_promise yes
Promise 40518 sata_promise yes?
Promise 20619 sata_promise no?
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