Amresh, I was not suggesting that you turn off the DMA. Just explaining the reasons behind the fact that you do not see CRC errors any more. Are you using the standard EVM board for these tasks. regards swami
________________________________ From: Amaresh Ram [mailto:[EMAIL PROTECTED] Sent: Thu 12/20/2007 12:22 PM To: Subbrathnam, Swaminathan Cc: [email protected] Subject: RE: Problem in HDD Disk Access Swami, That means you are not using the DMA for accessing disk, which may affect the performance. so can you suggest some other alternative to get rid of the issue. regards/Amaresh "Subbrathnam, Swaminathan" <[EMAIL PROTECTED] To m> "Amaresh Ram" <[EMAIL PROTECTED]> 12/20/2007 11:43 cc AM <[EMAIL PROTECTED] vincidsp.com> Subject RE: Problem in HDD Disk Access Amaresh, CRC error is calculated typically in the UDMA modes. Yes if you disable DMA CRC errors will not come. regards swam From: Amaresh Ram [mailto:[EMAIL PROTECTED] Sent: Thu 12/20/2007 11:46 AM To: Subbrathnam, Swaminathan Cc: [email protected] Subject: RE: Problem in HDD Disk Access Swami, I was going through some forum like linux, linuxgazette, etc; as per them I should disable the DMA for this drive using following command: #hdparm -d0 /dev/hd[a-d] After disabling DMA for hda, I am able to create use the Hard Disk. so IDE cable seems to be correct. I don't have any idea about DaVinci ATA controller. so can share info on DaVinci ATA Controller. regards/Amaresh "Subbrathnam, Swaminathan" <[EMAIL PROTECTED] To m> "Amaresh Ram" <[EMAIL PROTECTED]>, 12/19/2007 10:22 <[EMAIL PROTECTED] AM vincidsp.com> cc Subject RE: Problem in HDD Disk Access Amresh, The error seem to indicate the IDE cable seems to be faulty or you are operating DaVinci ATA controller in modes that it cannot support. Both these reasons will typically lead to the CRC error situation. regards swami From: [EMAIL PROTECTED] on behalf of Amaresh Ram Sent: Wed 12/19/2007 9:53 AM To: [email protected] Subject: Problem in HDD Disk Access Hi, We are trying to access the HDD Disk (40GB) connected to the DM6446 platform through IDE interface. We are following procedure: Step 1. Boot the platform using NFS boot method Step 2. Create partition using fdisk /dev/hda command from minicom On performing step 2, following message appears on the terminal hda: dma_intr: error=0x84 { DriveStatusError BadCRC } ide: failed opcode was: unknown hda: dma_intr: status=0x51 { DriveReady SeekComplete Error } hda: dma_intr: error=0x84 { DriveStatusError BadCRC } ide: failed opcode was: unknown hda: dma_intr: status=0x51 { DriveReady SeekComplete Error } hda: dma_intr: error=0x84 { DriveStatusError BadCRC } ide: failed opcode was: unknown hda: dma_intr: status=0x51 { DriveReady SeekComplete Error } hda: dma_intr: error=0x84 { DriveStatusError BadCRC } ide: failed opcode was: unknown ide0: reset: success hda: dma_intr: status=0x51 { DriveReady SeekComplete Error } hda: dma_intr: error=0x84 { DriveStatusError BadCRC } ide: failed opcode was: unknown end_request: I/O error, dev hda, sector 0 Can someone help me to resolve the issue? Regards, Amaresh ______________________________________________________________________ _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________
_______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
