Hi We ahave a embedded board with a SII3124 controller and four TI 6455DSP's connected to a Freescale 8280. DSP's are behind a PCI bridge, and the PCI runs at 50MHz. When we do data transfers from the DSP's to the CPU (DSP's are bus master) we get errors on the disk controller. The datarate is not horribly high (23Mbyte/s in 40k chunks) We're pretty sure that there is no data corruption on the PCI bus, as we can transfer gigabytes worh of data to/from the dsp's or to/from the disk (with no activity to the dsp's) Here is the relevant sections from the kernel log. We are running 2.6.18. The disk is a Hitachi Deskstar T7K500 320GB sata 3.0. Nov 20 19:38:37 oem_default_cpu1 kernel: ata1.00: exception Emask 0x20 SAct 0x1 SErr 0x0 action 0x2 Nov 20 19:38:37 oem_default_cpu1 kernel: ata1.00: (irq_stat 0x00020002, PCI master abort while fetching PRB) Nov 20 19:38:37 oem_default_cpu1 kernel: ata1.00: tag 0 cmd 0x61 Emask 0x20 stat 0x50 err 0x0 (host bus error) Nov 20 19:38:37 oem_default_cpu1 kernel: ata1: soft resetting port Nov 20 19:38:37 oem_default_cpu1 kernel: ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Nov 20 19:38:37 oem_default_cpu1 kernel: ata1.00: configured for UDMA/100 Nov 20 19:38:37 oem_default_cpu1 kernel: ata1: EH complete Nov 20 19:38:37 oem_default_cpu1 kernel: SCSI device sda: 625142448 512-byte hdwr sectors (320073 MB) Nov 20 19:38:37 oem_default_cpu1 kernel: sda: Write Protect is off Nov 20 19:38:37 oem_default_cpu1 kernel: sda: Mode Sense: 00 3a 00 00 Nov 20 19:38:37 oem_default_cpu1 kernel: SCSI device sda: drive cache: write back Nov 20 19:39:09 oem_default_cpu1 kernel: ata1.00: exception Emask 0x20 SAct 0x1 SErr 0x0 action 0x2 Nov 20 19:39:09 oem_default_cpu1 kernel: ata1.00: (irq_stat 0x00020002, PCI master abort while fetching PRB) Nov 20 19:39:09 oem_default_cpu1 kernel: ata1.00: tag 0 cmd 0x61 Emask 0x20 stat 0x50 err 0x0 (host bus error) Nov 20 19:39:09 oem_default_cpu1 kernel: ata1: soft resetting port Nov 20 19:39:09 oem_default_cpu1 kernel: ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Nov 20 19:39:09 oem_default_cpu1 kernel: ata1.00: configured for UDMA/100 Nov 20 19:39:09 oem_default_cpu1 kernel: ata1: EH complete Nov 20 19:39:09 oem_default_cpu1 kernel: SCSI device sda: 625142448 512-byte hdwr sectors (320073 MB) Nov 20 19:39:09 oem_default_cpu1 kernel: sda: Write Protect is off Nov 20 19:39:09 oem_default_cpu1 kernel: sda: Mode Sense: 00 3a 00 00 Nov 20 19:39:09 oem_default_cpu1 kernel: SCSI device sda: drive cache: write back Nov 20 19:39:14 oem_default_cpu1 kernel: ata1.00: exception Emask 0x20 SAct 0x1 SErr 0x0 action 0x2 Nov 20 19:39:14 oem_default_cpu1 kernel: ata1.00: (irq_stat 0x00020002, PCI master abort while fetching PRB) Nov 20 19:39:14 oem_default_cpu1 kernel: ata1.00: tag 0 cmd 0x61 Emask 0x20 stat 0x50 err 0x0 (host bus error) Nov 20 19:39:14 oem_default_cpu1 kernel: ata1: soft resetting port Nov 20 19:39:14 oem_default_cpu1 kernel: ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Nov 20 19:39:14 oem_default_cpu1 kernel: ata1.00: configured for UDMA/100 Nov 20 19:39:14 oem_default_cpu1 kernel: ata1: EH complete Nov 20 19:39:14 oem_default_cpu1 kernel: SCSI device sda: 625142448 512-byte hdwr sectors (320073 MB) Nov 20 19:39:14 oem_default_cpu1 kernel: sda: Write Protect is off Nov 20 19:39:14 oem_default_cpu1 kernel: sda: Mode Sense: 00 3a 00 00 Nov 20 19:39:14 oem_default_cpu1 kernel: SCSI device sda: drive cache: write back Nov 20 19:41:58 oem_default_cpu1 kernel: ata1.00: exception Emask 0x20 SAct 0x1 SErr 0x0 action 0x2 Nov 20 19:41:58 oem_default_cpu1 kernel: ata1.00: (irq_stat 0x00020002, PCI master abort while fetching PRB) Nov 20 19:41:58 oem_default_cpu1 kernel: ata1.00: tag 0 cmd 0x61 Emask 0x20 stat 0x50 err 0x0 (host bus error) Nov 20 19:41:58 oem_default_cpu1 kernel: ata1: soft resetting port Nov 20 19:41:58 oem_default_cpu1 kernel: ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Nov 20 19:41:58 oem_default_cpu1 kernel: ata1.00: configured for UDMA/100 Nov 20 19:41:58 oem_default_cpu1 kernel: ata1: EH complete Nov 20 19:41:58 oem_default_cpu1 kernel: SCSI device sda: 625142448 512-byte hdwr sectors (320073 MB) Nov 20 19:41:58 oem_default_cpu1 kernel: sda: Write Protect is off Nov 20 19:41:58 oem_default_cpu1 kernel: sda: Mode Sense: 00 3a 00 00 Nov 20 19:41:58 oem_default_cpu1 kernel: SCSI device sda: drive cache: write back Nov 20 19:42:03 oem_default_cpu1 kernel: ata1.00: exception Emask 0x20 SAct 0x1 SErr 0x0 action 0x2 Nov 20 19:42:03 oem_default_cpu1 kernel: ata1.00: (irq_stat 0x00020002, PCI master abort while fetching PRB) Nov 20 19:42:03 oem_default_cpu1 kernel: ata1.00: tag 0 cmd 0x61 Emask 0x20 stat 0x50 err 0x0 (host bus error) Nov 20 19:42:03 oem_default_cpu1 kernel: ata1: soft resetting port Nov 20 19:42:03 oem_default_cpu1 kernel: ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Nov 20 19:42:03 oem_default_cpu1 kernel: ata1.00: configured for UDMA/100 Nov 20 19:42:03 oem_default_cpu1 kernel: ata1: EH complete Nov 20 19:42:03 oem_default_cpu1 kernel: SCSI device sda: 625142448 512-byte hdwr sectors (320073 MB) Nov 20 19:42:03 oem_default_cpu1 kernel: sda: Write Protect is off Nov 20 19:42:03 oem_default_cpu1 kernel: sda: Mode Sense: 00 3a 00 00 Nov 20 19:42:03 oem_default_cpu1 kernel: SCSI device sda: drive cache: write back reboot Nov 20 19:57:32 oem_default_cpu1 kernel: Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 Nov 20 19:57:32 oem_default_cpu1 kernel: ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx Nov 20 19:57:32 oem_default_cpu1 kernel: libata version 2.00 loaded. Nov 20 19:57:32 oem_default_cpu1 kernel: sata_sil24 0000:00:11.0: version 0.3 Nov 20 19:57:32 oem_default_cpu1 kernel: ata1: SATA max UDMA/100 cmd 0xE1060000 ctl 0x0 bmdma 0x0 irq 69 Nov 20 19:57:32 oem_default_cpu1 kernel: ata2: SATA max UDMA/100 cmd 0xE1062000 ctl 0x0 bmdma 0x0 irq 69 Nov 20 19:57:32 oem_default_cpu1 kernel: ata3: SATA max UDMA/100 cmd 0xE1064000 ctl 0x0 bmdma 0x0 irq 69 Nov 20 19:57:32 oem_default_cpu1 kernel: ata4: SATA max UDMA/100 cmd 0xE1066000 ctl 0x0 bmdma 0x0 irq 69 Nov 20 19:57:32 oem_default_cpu1 kernel: scsi0 : sata_sil24 Nov 20 19:57:32 oem_default_cpu1 kernel: ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Nov 20 19:57:32 oem_default_cpu1 kernel: ata1.00: ATA-7, max UDMA/133, 625142448 sectors: LBA48 NCQ (depth 31/32) Nov 20 19:57:32 oem_default_cpu1 kernel: ata1.00: ata1: dev 0 multi count 0 Nov 20 19:57:32 oem_default_cpu1 kernel: ata1.00: configured for UDMA/100 Nov 20 19:57:32 oem_default_cpu1 kernel: scsi1 : sata_sil24 Nov 20 19:57:32 oem_default_cpu1 kernel: ata2: SATA link down (SStatus 0 SControl 300) Nov 20 19:57:32 oem_default_cpu1 kernel: scsi2 : sata_sil24 Nov 20 19:57:32 oem_default_cpu1 kernel: ata3: SATA link down (SStatus 0 SControl 300) Nov 20 19:57:32 oem_default_cpu1 kernel: scsi3 : sata_sil24 Nov 20 19:57:32 oem_default_cpu1 kernel: ata4: SATA link down (SStatus 0 SControl 300) Nov 20 19:57:32 oem_default_cpu1 kernel: Vendor: ATA Model: Hitachi HDT72503 Rev: V54O Nov 20 19:57:32 oem_default_cpu1 kernel: Type: Direct-Access ANSI SCSI revision: 05 Nov 20 19:57:32 oem_default_cpu1 kernel: SCSI device sda: 625142448 512-byte hdwr sectors (320073 MB) Nov 20 19:57:32 oem_default_cpu1 kernel: sda: Write Protect is off Nov 20 19:57:32 oem_default_cpu1 kernel: sda: Mode Sense: 00 3a 00 00 Nov 20 19:57:32 oem_default_cpu1 kernel: SCSI device sda: drive cache: write back Nov 20 19:57:32 oem_default_cpu1 kernel: SCSI device sda: 625142448 512-byte hdwr sectors (320073 MB) Nov 20 19:57:32 oem_default_cpu1 kernel: sda: Write Protect is off Nov 20 19:57:32 oem_default_cpu1 kernel: sda: Mode Sense: 00 3a 00 00 Nov 20 19:57:32 oem_default_cpu1 kernel: SCSI device sda: drive cache: write back Nov 20 19:57:32 oem_default_cpu1 kernel: sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 > Nov 20 19:57:32 oem_default_cpu1 kernel: sd 0:0:0:0: Attached scsi disk sda Nov 20 19:57:32 oem_default_cpu1 kernel: sd 0:0:0:0: Attached scsi generic sg0 type 0 - 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
