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authorDavid Gwynne <dlg@cvs.openbsd.org>2007-03-20 10:57:00 +0000
committerDavid Gwynne <dlg@cvs.openbsd.org>2007-03-20 10:57:00 +0000
commit9ee2e0b5ee0eb9426586f37e18d339e9ecf582ec (patch)
tree050aa24d6a4ef73d792bf068bc3765082235e5d5 /share
parentce170834ed4cab0720d65b6a4f93f33a6a44ae5e (diff)
document that scsibus is what attaches to ahci. ahci controllers can also
appear as pciide when configued in a compat mode.
Diffstat (limited to 'share')
-rw-r--r--share/man/man4/ahci.416
1 files changed, 14 insertions, 2 deletions
diff --git a/share/man/man4/ahci.4 b/share/man/man4/ahci.4
index a56911cbd70..0fbd4e6ff5c 100644
--- a/share/man/man4/ahci.4
+++ b/share/man/man4/ahci.4
@@ -1,4 +1,4 @@
-.\" $OpenBSD: ahci.4,v 1.1 2006/12/09 05:10:43 dlg Exp $
+.\" $OpenBSD: ahci.4,v 1.2 2007/03/20 10:56:59 dlg Exp $
.\"
.\" Copyright (c) 2006 David Gwynne <dlg@openbsd.org>
.\"
@@ -22,14 +22,26 @@
.Nd Advanced Host Controller Interface for Serial ATA
.Sh SYNOPSIS
.Cd "ahci* at pci?"
+.Cd "scsibus* at pci*"
.Sh DESCRIPTION
The
.Nm
driver provides support for Serial ATA controllers conforming to the
Advanced Host Controller Interface specification.
+.Pp
+Several AHCI capable controllers also provide a compatality mode that
+causes them to appear as a traditional ATA controller supported by
+.Xr pciide 4 .
+.Pp
+Although
+.Nm
+controllers are actual ATA controllers, the driver emulates SCSI via a
+translation layer.
.Sh SEE ALSO
.Xr intro 4 ,
-.Xr pci 4
+.Xr pci 4 ,
+.Xr pciide 4 ,
+.Xr scsi 4
.Sh HISTORY
The
.Nm