Re: Quick question about IDEBUS

["Jim" <jim berwynlibrary net>]

Thanks for the tips.
----- Original Message -----
From: "Thomas Dodd" <ted cypress com>
To: <enigma-list redhat com>
Sent: Tuesday, October 29, 2002 9:34 AM
Subject: Re: Quick question about IDEBUS


>
>
> Jim wrote:
> > Hey all,
> >
> > I managed to get my ServerWorks CSB5 Ide controller working. However,
> > it's still defaulting with a 33mhz idebus.  How can I tell which speeds
> > are supported?
> IDEBUS refers to the speed of the buss the IDE controler is
> connected to.
>
> > lspci -vv shows:
> >
> > 00:0f.1 IDE interface: ServerWorks CSB5 IDE Controller (rev 92) (prog-if
> > 82 [Master PriP])
> >         Subsystem: ServerWorks CSB5 IDE Controller
> >         Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop-
> > ParErr- Stepping- SERR- FastB2B-
> >         Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> > <TAbort- <MAbort- >SERR- <PERR-
> >
> > Should I believe 66mhz is the cap for this IDE bus?  The drives are
>
> The controler is capable of runnin on a 66MHz bus, but is it
> opn a 66MHz bus? Most are 32bit, 33MHz. Some high-end servers
> have 64bit and 66MHz busses. Check the docs for you motherboard
> and system if you'r not sure. 32bit, 33MHz is a safe bet though.
>
> > ATA-100, i'm a bit confused.  Also, if I am going to set the idebus=100
> > or 66, how do I go about doing it?
>
> That's the transfer speed of the drive to the controler and
> is configured with hdparm.
>
> > Finally, it looks like I have 2 ide controllers on board,  Can anyone
> > make sense of this log and guide me in the direction of making proper
> > use of my system's ide capabilities?  Here's the log:
> >
> > Oct 29 08:39:43 staff kernel: ide: Assuming 33MHz system bus speed for
> > PIO modes; override with idebus=xx
>
> Notice the wording. "33MHz system bus speed" SYSTEM BUS, not drive.
>
> > Oct 29 08:39:43 staff kernel: CMD649: IDE controller on PCI bus 00 dev
18
> > Oct 29 08:39:43 staff kernel: CMD649: chipset revision 2
> > Oct 29 08:39:43 staff kernel: CMD649: not 100%% native mode: will probe
> > irqs later
> > Oct 29 08:39:43 staff kernel:     ide0: BM-DMA at 0x2030-0x2037, BIOS
> > settings: hda:DMA, hdb:DMA
> > Oct 29 08:39:43 staff kernel:     ide1: BM-DMA at 0x2038-0x203f, BIOS
> > settings: hdc:pio, hdd:pio
>
> standard CMD649 controller for ide0 and ide1 (disks hda, hdb, hdc, hdd)
> hda and hdb are using DMA modes, hdc an hdd are set for PIO modes.
>
> > Oct 29 08:39:43 staff kernel: ServerWorks CSB5: IDE controller on PCI
> > bus 00 dev 79
> > Oct 29 08:39:43 staff kernel: ServerWorks CSB5: chipset revision 146
> > Oct 29 08:39:43 staff kernel: ServerWorks CSB5: not 100%% native mode:
> > will probe irqs later
> > Oct 29 08:39:43 staff kernel:     ide2: BM-DMA at 0x2000-0x2007, BIOS
> > settings: hde:pio, hdf:pio
> > Oct 29 08:39:43 staff kernel: ServerWorks CSB5: simplex device:  DMA
> > disabled
> > Oct 29 08:39:43 staff kernel: ide3: ServerWorks CSB5 Bus-Master DMA
> > disabled (BIOS)
> The ServerWorks CSB5 controller. ide2, with hde and hdf are set for PIO
> in BIOS, so DMA is not used. DMA is also turned off on ide3 but
> there are no devices attached to it.
>
> > Oct 29 08:39:43 staff kernel: hda: MAXTOR 6L040J2, ATA DISK drive
> > Oct 29 08:39:43 staff kernel: hdb: MAXTOR 6L080L4, ATA DISK drive
>
> 2 disks on the CMD646.
>
> > Oct 29 08:39:43 staff kernel: hde: HL-DT-ST CD-ROM GCR-8480B, ATAPI
> > CD/DVD-ROM drive
>
> one CDROM on the CSB5.
>
> > Oct 29 08:39:43 staff kernel: hda: 78165360 sectors (40021 MB) w/1819KiB
> > Cache, CHS=77545/16/63, UDMA(100)
> > Oct 29 08:39:43 staff kernel: hdb: 156355584 sectors (80054 MB)
> > w/1819KiB Cache, CHS=155114/16/63, UDMA(100)
>
> hda and hdb, using UDMA(100) aka ATA-100.
>
> -Thomas
>
>
>
> _______________________________________________
> enigma-list mailing list
> enigma-list redhat com
> https://listman.redhat.com/mailman/listinfo/enigma-list