Messages in this thread | | | Date | Sat, 19 Jul 2008 04:45:59 +0200 | From | Frantisek Hanzlik <> | Subject | Re: serverworks CSB5 IDE: DMA disabled on secondary channel |
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Alan Cox wrote: >>> ata2.01: ATAPI: CD-W540E, 1.0D, max UDMA/33 >>> ata2.00: simplex DMA is claimed by other device, disabling DMA >>> ata2.01: simplex DMA is claimed by other device, disabling DMA >>> ata2.00: configured for PIO4 >>> ata2.01: configured for PIO4 > > > Disable the pata_acpi driver and let me know if it then behaves. We had a > similar problem with the ATI hardware which lost and messed up its > internal state if pata_acpi was loaded first. > Before I post to lkml I tried disable ata_generic driver, (which was loaded before pata_serverworks too, my mail already not show it as is blacklisted), but this not solved problem. YES, problem was in pata_acpi, after disabling it all works fine (no matter if is ata_generic enabled and loaded before pata_serverworks or not). What is the meaning of "simplex DMA is claimed..." I probably must learn in sources itself ;) Many thanks, Alan, You are big magicians!
dmesg: ... libata version 3.00 loaded. scsi0 : pata_serverworks scsi1 : pata_serverworks ata1: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0x2440 irq 14 ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0x2448 irq 15 ata1.00: ATA-7: ST3400620A, 3.AAE, max UDMA/100 ata1.00: 781422768 sectors, multi 16: LBA48 ata1.01: ATAPI: TOSHIBA DVD-ROM SD-M1612, 1004, max UDMA/33 ata1.00: configured for UDMA/100 ata1.01: configured for UDMA/33 ata2.00: ATA-7: ST3400620A, 3.AAE, max UDMA/100 ata2.00: 781422768 sectors, multi 16: LBA48 ata2.01: ATAPI: CD-W540E, 1.0D, max UDMA/33 ata2.00: configured for UDMA/100 ata2.01: configured for UDMA/33 scsi 0:0:0:0: Direct-Access ATA ST3400620A 3.AA PQ: 0 ANSI: 5 sd 0:0:0:0: [sda] 781422768 512-byte hardware sectors (400088 MB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 0:0:0:0: [sda] 781422768 512-byte hardware sectors (400088 MB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sda: sda1 sda2 sda3 sda4 sd 0:0:0:0: [sda] Attached SCSI disk scsi 0:0:1:0: CD-ROM TOSHIBA DVD-ROM SD-M1612 1004 PQ: 0 ANSI: 5 scsi 1:0:0:0: Direct-Access ATA ST3400620A 3.AA PQ: 0 ANSI: 5 sd 1:0:0:0: [sdb] 781422768 512-byte hardware sectors (400088 MB) sd 1:0:0:0: [sdb] Write Protect is off sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00 sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 1:0:0:0: [sdb] 781422768 512-byte hardware sectors (400088 MB) sd 1:0:0:0: [sdb] Write Protect is off sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00 sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sdb: sdb1 sdb2 sdb3 sdb4 sd 1:0:0:0: [sdb] Attached SCSI disk scsi 1:0:1:0: CD-ROM TEAC CD-W540E 1.0D PQ: 0 ANSI: 5 md: md0 stopped. md: bind<sdb1> md: bind<sda1> raid1: raid set md0 active with 2 out of 2 mirrors kjournald starting. Commit interval 5 seconds EXT3-fs: mounted filesystem with ordered data mode. ...
# hdparm -Tt /dev/sda /dev/sda: Timing cached reads: 732 MB in 2.00 seconds = 366.18 MB/sec Timing buffered disk reads: 206 MB in 3.01 seconds = 68.40 MB/sec
# hdparm -Tt /dev/sdb /dev/sdb: Timing cached reads: 806 MB in 2.00 seconds = 402.65 MB/sec Timing buffered disk reads: 202 MB in 3.03 seconds = 66.72 MB/sec
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