Re: PCI IDE Adapter for PPC/Linux

Thanks Matt,

Turning on/off the UDMA feature doesn't seem to have any affect.

Earlier, Ben sent out an email regarding the IDE controller setup
which merits some investigation. Perhaps this is why it is not
working, also, I cannot see any dev entries under /dev/ide/
despite the fact that there is a 100GB WDC ATA disk on the other
end of the adapter .

What else should I look at? Also, assuming this is a brand new
drive (without any partitions on it), should I boot the disk under
DOS and run fdisk to set up an initial MBR?

Why can't I simply run fdisk on /dev/hda and set this up? -- because
there is no /dev/hda or /dev/ide/xx devices showing up with
devfsd running!

Also, how come it is not running in Native mode? Does anyone know what
the changes are to the pdc driver to enable this?

BTW, I would gladly pay MVista for support, If I had the budget for
this sort of thing ... unfortunately, I don't at this point in time :-(


Thoughts?

				Thanks,
				-James

The Promise Ultra-66 is known to work on several ppc platforms in
hhl-2.4.2.  Do you have the DMA options turned on in the kernel?

btw, if you are a MV customer contact support as this something we
support on the walnut and several other ppc platforms.


James F Dougherty wrote:

quoted

(LOL) .... I have the Promise Ultra-66..... since it's
not working, this is what prompted me to look for an
alternative ..

I have ported MontaVista HHL (Linux 2.4.2) to
a custom processor board, and have been
trying to run fdisk to setup a mountable root
drive.

Kernel is 2.4.2, with the Promise driver compiled in.
I boot up, and it finds the card, and sometimes hdb
is showing up in DMA mode ...


pty: 256 Unix98 ptys configured
block: queued sectors max/low 41386kB/13795kB, 128 slots per queue
RAMDISK driver initialized: 16 RAM disks of 524288K size 1024 blocksize
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PDC20262: IDE controller on PCI bus 00 dev 70
PDC20262: chipset revision 1
PDC20262: not 100% native mode: will probe irqs later
PDC20262: ROM enabled at 0x000d0000
PDC20262: (U)DMA Burst Bit DISABLED Primary PCI Mode Secondary PCI Mode.
PDC20262: FORCING BURST BIT 0x00 -> 0x01 ACTIVE
    ide0: BM-DMA at 0xbfff00-0xbfff07, BIOS settings: hda:pio, hdb:pio
    ide1: BM-DMA at 0xbfff08-0xbfff0f, BIOS settings: hdc:pio, hdd:pio
udf: registering filesystem
loop: loaded (max 8 devices)
Serial driver version 5.02 (2000-08-09) with MANY_PORTS SHARE_IRQ SERIAL_PCI
enabled


mousse-(8):[11:29pm]: [/proc/ide>cat drivers
ide-cdrom version 4.59
ide-disk version 1.10
mousse-(9):[11:29pm]: [/proc/ide>cat pdc202xx

                                PDC20262 Chipset.
------------------------------- General Status ---------------------------------
Burst Mode                           : enabled
Host Mode                            : Tri-Stated
Bus Clocking                         : 100 External
IO pad select                        : 10 mA
Status Polling Period                : 15
Interrupt Check Status Polling Delay : 15
--------------- Primary Channel ---------------- Secondary Channel -------------
                disabled                         disabled
66 Clocking     enabled                          enabled
           Mode MASTER                      Mode MASTER
                Error                            Error
--------------- drive0 --------- drive1 -------- drive0 ---------- drive1 ------
DMA enabled:    yes              yes             yes               yes
DMA Mode:       NOTSET           NOTSET          NOTSET            NOTSET
PIO Mode:       NOTSET            NOTSET           NOTSET            NOTSET
mousse-(10):[11:29pm]: [/proc/ide>


Now, when I run fdisk .... it either cannot find the device (when
compiled kernel with INCLUDE_DEVFS

mousse-(17):[11:31pm]: [/>devfsd /dev
Started device management daemon for /dev
mousse-(18):[11:31pm]: [/>fdisk /dev/hda
modprobe: Can't locate module /dev/hda
modprobe: Can't locate module /dev/hda

Unable to open /dev/hda
mousse-(19):[11:31pm]: [/>fdisk /dev/hdb
modprobe: Can't locate module /dev/hdb
modprobe: Can't locate module /dev/hdb

Unable to open /dev/hdb
mousse-(20):[11:31pm]: [/>

Or, when I run with a standard dev filesystem and the device
files created with scripts/MAKEDEV.ide it gives me an error,
cant find module block-3 blah blah blah...


Any ideas?

quoted

A good shot is always the Promise cards.  I know at least the 66 used
to work, and I'm reasonably sure the 100 does.  You'll need 2.4 for it
though, and no booting off it.

On Sun, Aug 12, 2001 at 11:49:14PM -0700, James F Dougherty wrote:

quoted

I guess my question is which drivers run in native mode
(e.g. do not require an x86 ROM BIOS).

quoted

Anyone have any suggestions for a PCI IDE card to
use for PPC/Linux? Something one could buy down
at a Frye's would be great.


Many thanks in advance.
				-James

--
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer

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