Date: Wed, 30 Jul 1997 08:39:12 -0400 From: "Donald J. Maddox" <root@scsn.net> To: =?iso-8859-1?Q?S=F8ren_Schmidt?= <sos@sos.freebsd.dk> Cc: dmaddox@scsn.net, cgull@smoke.marlboro.vt.us, doogie@forbidden-donut.anet-stl.com, freebsd-current@FreeBSD.ORG Subject: Re: code talks: announcing EIDE bus master patches Message-ID: <19970730083912.16090@scsn.net> In-Reply-To: =?iso-8859-1?Q?=3C199707301220=2EOAA02238=40sos=2Efreebsd=2Edk=3E=3B_fro?= =?iso-8859-1?Q?m_S=F8ren_Schmidt_on_Wed=2C_Jul_30=2C_1997_at_02=3A20=3A4?= =?iso-8859-1?Q?4PM_%2B0200?= References: <19970730081733.55871@scsn.net> <199707301220.OAA02238@sos.freebsd.dk>
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On Wed, Jul 30, 1997 at 02:20:44PM +0200, Søren Schmidt wrote:
> In reply to Donald J. Maddox who wrote:
> > > >
> > > > Yes, as stated in the commit etc, you need to set the flags to 0xa0ffa0ff
> > > > to get DMA support (if the drive and controller supports it).
> > > >
> > > > > wdc0 at 0x1f0-0x1f7 irq 14 flags 0x80ff80ff on isa
> > > > ^^^^^^^^^^
> > > > > wdc1 at 0x170-0x177 irq 15 flags 0x80ff80ff on isa
> > > > ^^^^^^^^^^
> > > > > wdc1: unit 0 (atapi): <V004H0DT B/4V001-4.>, removable, iordy
> > > >
> > > Geez, how did I miss that? Thanks for the info :-)
> >
> > Well, apparently, that's not the whole story:
>
> Yes it is, and you have DMA support:
>
> > wdc0 at 0x1f0-0x1f7 irq 14 flags 0xa0ffa0ff on isa
> > wdc0: unit 0 (wd0): <Maxtor 71336 AP>, DMA, 32-bit, multi-block-32
> ^^^
> > wd0: 1277MB (2615760 sectors), 2595 cyls, 16 heads, 63 S/T, 512 B/S
>
> see??
Well, no, not entirely... My original msg was basically an enquiry
as to why I am seeing the following msgs at boot:
Copyright (c) 1992-1997 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 3.0-CURRENT #0: Wed Jul 30 08:11:06 EDT 1997
root@rhiannon.scsn.net:/usr/src/sys/compile/RHIANNON
CPU: Pentium (166.19-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x52c Stepping=12
Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
real memory = 33554432 (32768K bytes)
avail memory = 30920704 (30196K bytes)
Probing for devices on PCI bus 0:
chip0: <Intel 82439> rev 0x01 on pci0.0.0
chip1: <Intel 82371SB PCI to ISA bridge> rev 0x00 on pci0.7.0
ide_pci0: <Intel PIIX3 Bus-master IDE controller> rev 0x00 on pci0.7.1
ide_pci: warning, ide0:0 not configured for DMA?
ide_pci: warning, ide0:1 not configured for DMA?
ide_pci: warning, ide1:0 not configured for DMA?
ide_pci: warning, ide1:1 not configured for DMA?
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Adding the proper flag does indeed enable the DMA, but I could care
less about that, since I only have Win95/NT on IDE drives. I just want to
know why I am getting the messages from ide_pci, and how to shut them up.
I should have been more specific in my original msg.
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