AHCI(4D) Devices AHCI(4D)

NAME

ahci - Advanced Host Controller Interface SATA controller driver

SYNOPSIS

sata@unit-address

DESCRIPTION

The ahci driver is a SATA framework-compliant HBA driver that
supports SATA HBA controllers that are compatible with the Advanced
Host Controller Interface 1.0 specification. AHCI is an Intel-
developed protocol that describes the register-level interface for
host controllers for serial ATA 1.0a and Serial ATA II. The AHCI 1.0
specification describes the interface between the system software and
the host controller hardware.


The ahci driver currently supports the Intel ICH6/7/8/9/10, VIA
vt8251 and JMicron AHCI controllers which are compliant with the
Advanced Host Controller Interface 1.0 specification. The Intel
ICH6/7/8/9 and VIA vt8251 controllers support standard SATA features.
The ahci driver currently supports hard disk, ATAPI DVD, ATAPI tape,
ATAPI disk (i.e. Dell RD1000), hotplug, NCQ (Native command queuing)
and Port multipliers (Silicon Image 3726/4726). Power management is
not yet supported.

CONFIGURATION

The ahci module contains no user configurable parameters.

FILES

/kernel/drv/ahci

32-bit ELF kernel module (x86).


/kernel/drv/amd64/ahci

64-bit ELF kernel module (x86).

ATTRIBUTES

See attributes(7) for descriptions of the following attribute:


+---------------+-----------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------+
|Architecture | x86 |
+---------------+-----------------+

SEE ALSO

sata(4D), cfgadm(8), cfgadm_sata(8), prtconf(8)


Advanced Host Controller Interface 1.0


Writing Device Drivers

NOTES

To bind the ahci driver to your controller, choose the [AHCI] BIOS
option.


Note that booting is not supported if toggle exists between the [IDE]
and [AHCI] BIOS options

September 10, 2009 AHCI(4D)