cc'ing Ashish just in case he missed this message. My first suggestion: try more recent kernel. even if you can't use that in the production, you at least can tell where to look at. sivaji wrote: > Hi, > We are using MCF5253 procesoor. In this processor we have dedicated ATA DMA > controller. Right now we are testing the ATA interface using the PIO and > UDMA modes. PIO modes works perfectly. When moving to the UDMA mode, First > we configured the ATA DMA controller registers, then we are setting the > command in the command register. > > Before configuring the ATA DMA Misccr Reigster the value of Device status > and Alternate status registers is 0x50. After configuring the Misccr > Registers the values of status and Alternate status register is 0x0. I don't > know why the STATUS register and ALTSTATUS register values are changing when > configuring the ATADMA Controller Register. Due to this i am facing HSM > violation. Here i have attached the log. > > scsi0 : pata_fsl > ata1: PATA max UDMA/44 cmd 0x800008a0 ctl 0x800008d8 bmdma 0x00000000 irq > 147 > feat 0x0 nsect 0x0 lba 0x0 0x0 0x0 > hob&LBA48: feat 0x0 nsect 0x0, lba 0x0 0x0 0x0 > feat 0x0 nsect 0x0 lba 0x0 0x0 0x0 > ata1.00: ATA-7: ST380215A, 3.AAD, max UDMA/100 > ata1.00: 156301488 sectors, multi 0: LBA48 > xfer_mode:c > xfer_mode:43 > feat 0x3 nsect 0x43 lba 0x0 0x0 0x0 > feat 0x0 nsect 0x0 lba 0x0 0x0 0x0 > hob&LBA48: feat 0x0 nsect 0x0, lba 0x0 0x0 0x0 > feat 0x0 nsect 0x0 lba 0x0 0x0 0x0 > ata1.00: configured for UDMA/44 > scsi 0:0:0:0: Direct-Access ATA ST380215A 3.AA PQ: 0 ANSI: 5 > sd 0:0:0:0: [sda] 156301488 512-byte hardware sectors (80026 MB) > sd 0:0:0:0: [sda] Write Protect is off > sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support > DPO or FUA > sd 0:0:0:0: [sda] 156301488 512-byte hardware sectors (80026 MB) > sd 0:0:0:0: [sda] Write Protect is off > sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support > DPO or FUA > sda:feat 0x0 nsect 0x8 lba 0x0 0x0 0x0 > sg->address:80020000 > Before Setting ATADMA Device Alternate Status Register:50 > Source address :18 > DMA count register:1000 > After setting ATADMA Device Alternate Status Register:50 > pata_fsl_bmdma_start starts qc->flags:11 > pata_fsl_bmdma_start Read mode Dma Control Register:100 > pata_fsl_bmdma_start Read mode Dma Control Register:107 > Alternate status Register:0 > pata_fsl_bmdma_start ends > ata_host_intr: Alternate status register:0 > ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 > ata1.00: BMDMA stat 0x0 > ata1.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 cdb 0x0 data 4096 in > res 00/00:00:00:00:00/00:00:00:00:00/00 Emask 0x2 (HSM violation) > ata1: soft resetting port > feat 0x0 nsect 0x0 lba 0x0 0x0 0x0 > ata1.00: revalidation failed (errno=-2) > ata1: failed to recover some devices, retrying in 5 secs > ata1: soft resetting port > feat 0x0 nsect 0x0 lba 0x0 0x0 0x0 > ata1.00: revalidation failed (errno=-2) > ata1: failed to recover some devices, retrying in 5 secs > ata1: soft resetting port > feat 0x0 nsect 0x0 lba 0x0 0x0 0x0 > ata1.00: revalidation failed (errno=-2) > ata1.00: disabled > ata1: EH pending after completion, repeating EH (cnt=4) > ata1: soft resetting port > ata1: EH complete > sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 > end_request: I/O error, dev sda, sector 0 > Buffer I/O error on device sda, logical block 0 > sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00 > end_request: I/O error, dev sda, sector 0 > Buffer I/O error on device sda, logical block 0 > unable to read partition table > sd 0:0:0:0: [sda] Attached SCSI disk > > > Linux Version : 2.6.23-uc1 > > Thanks and Regards > Sivaji > > > sivaji wrote: >> Hi, >> We are using MCF5253 procesoor. In this processor we have dedicated ATA >> DMA controller. Right now we are testing the ATA interface using the PIO >> and UDMA modes. PIO modes works perfectly. When moving to the UDMA mode, >> First we configured the ATA DMA controller registers, then we are setting >> the command in the command register. >> >> Before configuring the ATA DMA Misccr Reigster the value of Device status >> and Alternate status registers is 0x50. After configuring the Misccr >> Registers the values of status and Alternate status register is 0x0. I >> don't know why the STATUS register and ALTSTATUS register values are >> changing when configuring the ATADMA Controller Register. Due to this i >> am facing HSM violation. Here i have attached the log. Give some idea to >> fix this issue. >> >> Linux Version : 2.6.23-uc1 >> >> Thanks and Regards >> Sivaji >> > -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
