Note the Acard UIDE controllers.
This commit is contained in:
parent
bf4e210bbe
commit
4c7bed81e3
|
@ -1,4 +1,4 @@
|
|||
.\" $NetBSD: pciide.4,v 1.30 2001/06/12 11:26:21 wiz Exp $
|
||||
.\" $NetBSD: pciide.4,v 1.31 2001/07/28 12:18:19 tsutsui Exp $
|
||||
.\"
|
||||
.\" Copyright (c) 1998 Manuel Bouyer.
|
||||
.\"
|
||||
|
@ -55,6 +55,8 @@ PCI0640 controller, and IDE DMA/Ultra-DMA support for the following
|
|||
controllers:
|
||||
.Bl -dash -compact -offset indent
|
||||
.It
|
||||
Acard ATP850 (Ultra/33) and ATP860 (Ultra/66) IDE Controllers
|
||||
.It
|
||||
Acer labs M5229 IDE Controller
|
||||
.It
|
||||
Advanced Micro Devices AMD-756 and 766 IDE Controllers
|
||||
|
@ -97,7 +99,6 @@ Ultra-DMA is disabled by default for this controller. To enable Ultra-DMA,
|
|||
use the PCIIDE_CMD0646U_ENABLEUDMA option. Ultra-DMA can eventually be
|
||||
disabled on a per-drive basis with config flags, see
|
||||
.Xr wd 4 .
|
||||
|
||||
.Pp
|
||||
The AMD756 chip revision D2 has a bug affecting DMA (but not Ultra-DMA)
|
||||
modes. The workaround documented by AMD is to not use DMA on any drive which
|
||||
|
@ -108,6 +109,11 @@ per-drive basis with config flags, see
|
|||
.Xr wd 4 .
|
||||
The bug, if triggered, will cause a total system hang.
|
||||
.Pp
|
||||
Since there is few information about the Acard controllers,
|
||||
this driver does not check the cable type connected to the Acard
|
||||
contrllers. If Ultra/66 drives are connected to the ATP860
|
||||
with normal 40P cables, it would cause many transfer errors.
|
||||
.Pp
|
||||
The timings used for the PIO and DMA modes for controllers listed above
|
||||
are for a PCI bus running at 30 or 33 MHz (except the OPTi controller,
|
||||
which supports both 25 and 33 MHz PCI bus timings). This driver may not
|
||||
|
|
Loading…
Reference in New Issue