kern/173251: ACHI/ATA_CAM doesn't find any SATA Disk on ICH7 - Dell SC430

Michael Schuh michael.schuh at
Thu Nov 1 19:50:02 UTC 2012

The following reply was made to PR kern/173251; it has been noted by GNATS.

From: Michael Schuh <michael.schuh at>
To: bug-followup at
Subject: Re: kern/173251: ACHI/ATA_CAM doesn't find any SATA Disk on ICH7 -
 Dell SC430
Date: Thu, 1 Nov 2012 20:42:30 +0100

 According to
 if i understand the documentation and ata-intel.c right,
 this is a bug programmed into ata-intel.c.
 cause of:
 This document is intended for Original Equipment Manufacturers and BIOS ven=
 creating Intel=AE I/O Controller Hub 7 (ICH7) Family based products.
 This document is
 the datasheet for the following:
   =95 Intel=AE 82801GB ICH7 (ICH7)
   =95 Intel=AE 82801GR ICH7 RAID (ICH7R)
   =95 Intel=AE 82801GDH ICH7 Digital Home (ICH7DH)
   =95 Intel=AE 82801GBM ICH7 Mobile (ICH7-M)
   =95 Intel=AE 82801GHM ICH7 Mobile Digital Home (ICH7-M DH)
   =95 Intel=AE 82801GU ICH7-U Ultra Mobile (ICH7-U)
 Note: Throughout this datasheet, the terms =93Desktop=94, =93Digital Home=
 =93Mobile=94, and =93Ultra
       Mobile=94 refer to the following components, unless specifically
 noted otherwise:
        =95 Desktop refers to the 82801GB ICH7, 82801GR ICH7R, and 82801GDH =
        =95 Digital Home refers to the 82801GDH ICH7DH and 82801GHM ICH7-M D=
        =95 Mobile refers to the 82801GBM ICH7-M, and 82801GHM ICH7-M DH.
        =95 Ultra Mobile refers to the 82801GU ICH7-U.
 AHCI (Intel=AE ICH7R, ICH7DH, and Mobile Only)
 The ICH7 provides hardware support for Advanced Host Controller
 Interface (AHCI), a
 new programming interface for SATA host controllers. Platforms
 supporting AHCI may
 take advantage of performance features such as no master/slave
 designation for SATA
 devices=97each device is treated as a master=97and hardware-assisted native=
 queuing. AHCI also provides usability enhancements such as Hot-Plug (Deskto=
 p and
 Mobile Only). AHCI requires appropriate software support (e.g., an
 AHCI driver) and for
 some features, hardware support in the SATA device or additional
 platform hardware.
 <<< 82801GB no AHCI capability there?????
 Not all ICH7 Chipsets are capable of doing AHCI.
 I am not sure if the chip reported ID's are right translated in
 ata-intel.c oder pci devices.

More information about the freebsd-bugs mailing list