From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 12 Jan 2004 12:09:42 -0800 From: mutex To: ghannon@cspi.com Cc: linuxppc-dev@lists.linuxppc.org Subject: Re: DMA timing issues with promise controllers Message-ID: <20040112200942.GF15119@heliosphan.futuretel.com> Reply-To: mutex References: <85256E19.005070C8.00@pine.cspi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <85256E19.005070C8.00@pine.cspi.com> Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: On Mon, Jan 12, 2004 at 10:14:39AM -0500 or thereabouts, ghannon@cspi.com wrote: > If it helps any I've seen exactly the same thing on a Motorola VME board > with a Ramix (now GE Fanuc) card running over PCI. It also uses > a PROMIS chip. The error seem to be just a nuisance, but does cause > an extra delay during boot. You're right that it does appear to be a DMA > timing > issue, as the system sees the drive fine and it works great after the > reset. > It would be nice if my machine didn't have a 5 min booting time ;-) > Anything I saw on lists said to check cables, etc. which was not the issue > here. For me, the bigger problem is to get the firmware on the board to > talk to the controller and recognize the drive so I can boot from it. > This was booted from flash. > I checked cables and what not as well. Are you able to boot from it ? I haven't tried yet, so far I've just been messing with the drives on a gentoo livecd. I would like to test 2.6, see if it has the same problems. > > Snip from boot output ************ > > Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4 > ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx > PDC20269: IDE controller at PCI slot 00:11.0 > PDC20269: chipset revision 2 > PDC20269: not 100% native mode: will probe irqs later > ide2: BM-DMA at 0x77ef90-0x77ef97, BIOS settings: hde:pio, hdf:pio > ide3: BM-DMA at 0x77ef98-0x77ef9f, BIOS settings: hdg:pio, hdh:pio > Probing IDE interface ide2... > hde: IC25N040ATCS04-0, ATA DISK drive > blk: queue c0224b60, I/O limit 4095Mb (mask 0xffffffff) > Probing IDE interface ide3... > ide2 at 0x77efb8-0x77efbf,0x77efb6 on irq 28 > hde: attached ide-disk driver. > hde: host protected area => 1 > hde: 78140160 sectors (40008 MB) w/1768KiB Cache, CHS=77520/16/63, > UDMA(100) > Partition check: > hde:<4>hde: dma_timer_expiry: dma status == 0x21 > hde: error waiting for DMA > hde: dma timeout retry: status=0x51 { DriveReady SeekComplete Error } > hde: dma timeout retry: error=0x84 { DriveStatusError BadCRC } > hde1 hde2 hde3 hde4 Error } > hde: dma_intr: error=0x84 { DriveStatusError BadCRC } > hde: dma_intr: status=0x51 { DriveReady SeekComplete Error } > hde: dma_intr: error=0x84 { DriveStatusError BadCRC } > hde: dma_intr: status=0x51 { DriveReady SeekComplete Error } > hde: dma_intr: error=0x84 { DriveStatusError BadCRC } > hde: dma_intr: status=0x51 { DriveReady SeekComplete Error } > hde: dma_intr: error=0x84 { DriveStatusError BadCRC } > PDC202XX: Primary channel reset. > ide2: reset: success > hde5 > > SCSI subsystem driver Revision: 1.00 > scsi0 : SCSI host adapter emulation for IDE ATAPI devices > > end snip ************************ > > If you find a fix and would like me to test it on this platform, I'd be > glad to. > I'm running at 2.4.23-pre5 from the linuxppc_2_4_devel tree. > The errors happen on every reset. > yeah sucks. I think i'm running 2.4.22-something... I'll check when I'm back at home in front of the box. Benh said that it may be the controller is expecting a PC bios to set some timing register, and OF isn't doing that. I'll take a look at the driver when I have a few minutes.. see if it insipres anything, however I must admit my experince with IDE drivers is definatly 'less-than-expert' status. Are you using the pdc202xx_new or pdc202xx_old driver ? It looks like andre hedrick is the maintainer, I'll email him with a pointer to this thread, maybe he will have something insipring to add. ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/