(cc: linux-ide) (Rafael: please track as a post-2.623 regression) > On Wed, 7 Nov 2007 16:14:10 +0100 "Thomas Lindroth" <thomas.lindroth@xxxxxxxxx> wrote: > After upgrading to 2.6.24-rc1 I get the message ata6.00: limited to > UDMA/33 due to 40-wire cable. The 2.6.23 kernel does not complain and > activates DMA for the channel. > > I'm using an nforce 4 board with the following ata devices: > channel1, master: disk IC35L120AVVA07-0 120gig > channel1, slave: dvd HITACHI DVD-ROM GD-7500 > channel2, master: disk IC35L120AVV207-0 120gig > channel2, slave: cdrom LITE-ON LTR-40125S > > I've made sure the cable is 80-pin and tried replacing it with a > similar cable. Only channel2 gets UDMA33, channel1 works fine. > The change was introduced in 2.6.24-rc1 but also exists in 2.6.24-rc2. > It probably have something to do with the new function > ata_acpi_cbl_80wire in drivers/ata/libata-acpi.c. I've added a return > 1; at the beginning of that function as a quick workaround for the > problem. > > The non libata driver prints the waring "BIOS didn't set the cable > bits correctly. Enabling workaround" which is probably related to > this. However I am using the latest bios. > > The thread "2.6.24-rc1: pata_acpi fails to activate DMA for DVD-ROM on > ALi M5229 secondary channel" might be related to this. > > Another thing that might be related is that I get bad throughput on > the second channel disk even with my workaround but this also occurs > with older kernels and with the non libata driver. > > > # hdparm -tT /dev/sdb > > /dev/sdb: > Timing cached reads: 1346 MB in 2.00 seconds = 673.35 MB/sec > Timing buffered disk reads: 138 MB in 3.04 seconds = 45.40 MB/sec > # hdparm -tT /dev/sdc > > /dev/sdc: > Timing cached reads: 1392 MB in 2.00 seconds = 696.02 MB/sec > Timing buffered disk reads: 34 MB in 3.39 seconds = 10.02 MB/sec > # hdparm -I /dev/sdb > > /dev/sdb: > > ATA device, with non-removable media > powers-up in standby; SET FEATURES subcmd spins-up. > Model Number: IC35L120AVVA07-0 > Serial Number: VNC602A6G5LH4A > Firmware Revision: VA6OA52A > Standards: > Used: ATA/ATAPI-5 T13 1321D revision 1 > Supported: 5 4 3 & some of 6 > Configuration: > Logical max current > cylinders 16383 65535 > heads 16 16 > sectors/track 63 0 > -- > CHS current addressable sectors: 0 > LBA user addressable sectors: 241254720 > device size with M = 1024*1024: 117800 MBytes > device size with M = 1000*1000: 123522 MBytes (123 GB) > Capabilities: > LBA, IORDY(can be disabled) > bytes avail on r/w long: 52 Queue depth: 32 > Standby timer values: spec'd by Standard, no device specific minimum > R/W multiple sector transfer: Max = 16 Current = 1 > Advanced power management level: unknown setting (0x0000) > Recommended acoustic management value: 128, current value: 254 > DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 > Cycle time: min=120ns recommended=120ns > PIO: pio0 pio1 pio2 pio3 pio4 > Cycle time: no flow control=240ns IORDY flow control=120ns > Commands/features: > Enabled Supported: > * SMART feature set > Security Mode feature set > * Power Management feature set > * Write cache > * Look-ahead > Release interrupt > * Host Protected Area feature set > * WRITE_BUFFER command > * READ_BUFFER command > * NOP cmd > * READ/WRITE_DMA_QUEUED > Advanced Power Management feature set > Power-Up In Standby feature set > SET_FEATURES required to spinup after power up > Address Offset Reserved Area Boot > SET_MAX security extension > Automatic Acoustic Management feature set > * Device Configuration Overlay feature set > * Mandatory FLUSH_CACHE > Security: > Master password revision code = 65534 > supported > not enabled > not locked > not frozen > not expired: security count > not supported: enhanced erase > 72min for SECURITY ERASE UNIT. > HW reset results: > CBLID- above Vih > Device num = 0 determined by the jumper > Checksum: correct > # hdparm -I /dev/sdc > > /dev/sdc: > > ATA device, with non-removable media > powers-up in standby; SET FEATURES subcmd spins-up. > Model Number: IC35L120AVV207-0 > Serial Number: VNVD06G4CGKB5L > Firmware Revision: V24OA66A > Standards: > Used: ATA/ATAPI-6 T13 1410D revision 3a > Supported: 6 5 4 > Configuration: > Logical max current > cylinders 16383 16383 > heads 16 16 > sectors/track 63 63 > -- > CHS current addressable sectors: 16514064 > LBA user addressable sectors: 241254720 > LBA48 user addressable sectors: 241254720 > device size with M = 1024*1024: 117800 MBytes > device size with M = 1000*1000: 123522 MBytes (123 GB) > Capabilities: > LBA, IORDY(can be disabled) > Queue depth: 32 > Standby timer values: spec'd by Standard, no device specific minimum > R/W multiple sector transfer: Max = 16 Current = 1 > Advanced power management level: unknown setting (0x0000) > Recommended acoustic management value: 128, current value: 254 > DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 > Cycle time: min=120ns recommended=120ns > PIO: pio0 pio1 pio2 pio3 pio4 > Cycle time: no flow control=240ns IORDY flow control=120ns > Commands/features: > Enabled Supported: > * SMART feature set > Security Mode feature set > * Power Management feature set > * Write cache > * Look-ahead > Release interrupt > * Host Protected Area feature set > * WRITE_BUFFER command > * READ_BUFFER command > * NOP cmd > * READ/WRITE_DMA_QUEUED > Advanced Power Management feature set > Power-Up In Standby feature set > SET_FEATURES required to spinup after power up > Address Offset Reserved Area Boot > SET_MAX security extension > Automatic Acoustic Management feature set > * 48-bit Address feature set > * Device Configuration Overlay feature set > * Mandatory FLUSH_CACHE > * FLUSH_CACHE_EXT > * SMART error logging > * SMART self-test > * General Purpose Logging feature set > Security: > Master password revision code = 65534 > supported > not enabled > not locked > not frozen > not expired: security count > not supported: enhanced erase > 60min for SECURITY ERASE UNIT. > HW reset results: > CBLID- above Vih > Device num = 0 determined by the jumper > Checksum: correct > > relevant part of dmesg without my fix: > sata_nv 0000:00:07.0: version 3.5 > ACPI: PCI Interrupt Link [APSI] enabled at IRQ 22 > ACPI: PCI Interrupt 0000:00:07.0[A] -> Link [APSI] -> GSI 22 (level, > low) -> IRQ 18 > sata_nv 0000:00:07.0: Using ADMA mode > PCI: Setting latency timer of device 0000:00:07.0 to 64 > scsi0 : sata_nv > scsi1 : sata_nv > ata1: SATA max UDMA/133 cmd 0x9f0 ctl 0xbf0 bmdma 0xd800 irq 18 > ata2: SATA max UDMA/133 cmd 0x970 ctl 0xb70 bmdma 0xd808 irq 18 > ata1: SATA link down (SStatus 0 SControl 300) > ata2: SATA link down (SStatus 0 SControl 300) > ACPI: PCI Interrupt Link [APSJ] enabled at IRQ 21 > ACPI: PCI Interrupt 0000:00:08.0[A] -> Link [APSJ] -> GSI 21 (level, > low) -> IRQ 19 > sata_nv 0000:00:08.0: Using ADMA mode > PCI: Setting latency timer of device 0000:00:08.0 to 64 > scsi2 : sata_nv > scsi3 : sata_nv > ata3: SATA max UDMA/133 cmd 0x9e0 ctl 0xbe0 bmdma 0xc400 irq 19 > ata4: SATA max UDMA/133 cmd 0x960 ctl 0xb60 bmdma 0xc408 irq 19 > ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300) > ata3.00: ATA-7: Maxtor 6L250S0, BACE1G20, max UDMA/133 > ata3.00: 490234752 sectors, multi 1: LBA48 NCQ (depth 31/32) > ata3.00: configured for UDMA/133 > ata4: SATA link down (SStatus 0 SControl 300) > scsi 2:0:0:0: Direct-Access ATA Maxtor 6L250S0 BACE PQ: 0 ANSI: 5 > ata3: bounce limit 0xFFFFFFFFFFFFFFFF, segment boundary 0xFFFFFFFF, hw segs 61 > sd 2:0:0:0: [sda] 490234752 512-byte hardware sectors (251000 MB) > sd 2:0:0:0: [sda] Write Protect is off > sd 2:0:0:0: [sda] Mode Sense: 00 3a 00 00 > sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't > support DPO or FUA > sd 2:0:0:0: [sda] 490234752 512-byte hardware sectors (251000 MB) > sd 2:0:0:0: [sda] Write Protect is off > sd 2:0:0:0: [sda] Mode Sense: 00 3a 00 00 > sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't > support DPO or FUA > sda: sda1 sda2 < sda5 sda6 sda7 > > sd 2:0:0:0: [sda] Attached SCSI disk > sd 2:0:0:0: Attached scsi generic sg0 type 0 > pata_amd 0000:00:06.0: version 0.3.9 > PCI: Setting latency timer of device 0000:00:06.0 to 64 > scsi4 : pata_amd > scsi5 : pata_amd > ata5: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0xf000 irq 14 > ata6: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xf008 irq 15 > ata5.00: ATA-5: IC35L120AVVA07-0, VA6OA52A, max UDMA/100 > ata5.00: 241254720 sectors, multi 1: LBA > ata5.01: ATAPI: HITACHI DVD-ROM GD-7500, 0005, max UDMA/33 > ata5.00: configured for UDMA/100 > ata5.01: configured for UDMA/33 > ata6.00: ATA-6: IC35L120AVV207-0, V24OA66A, max UDMA/100 > ata6.00: 241254720 sectors, multi 1: LBA48 > ata6.01: ATAPI: LITE-ON LTR-40125S, ZS0P, max UDMA/33 > ata6.00: limited to UDMA/33 due to 40-wire cable > ata6.00: configured for UDMA/33 > ata6.01: configured for UDMA/33 > scsi 4:0:0:0: Direct-Access ATA IC35L120AVVA07-0 VA6O PQ: 0 ANSI: 5 > sd 4:0:0:0: [sdb] 241254720 512-byte hardware sectors (123522 MB) > sd 4:0:0:0: [sdb] Write Protect is off > sd 4:0:0:0: [sdb] Mode Sense: 00 3a 00 00 > sd 4:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't > support DPO or FUA > sd 4:0:0:0: [sdb] 241254720 512-byte hardware sectors (123522 MB) > sd 4:0:0:0: [sdb] Write Protect is off > sd 4:0:0:0: [sdb] Mode Sense: 00 3a 00 00 > sd 4:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't > support DPO or FUA > sdb: sdb1 sdb2 < sdb5 sdb6 > > sd 4:0:0:0: [sdb] Attached SCSI disk > sd 4:0:0:0: Attached scsi generic sg1 type 0 > scsi 4:0:1:0: CD-ROM HITACHI DVD-ROM GD-7500 0005 PQ: 0 ANSI: 5 > sr0: scsi3-mmc drive: 14x/40x cd/rw xa/form2 cdda tray > Uniform CD-ROM driver Revision: 3.20 > sr 4:0:1:0: Attached scsi CD-ROM sr0 > sr 4:0:1:0: Attached scsi generic sg2 type 5 > scsi 5:0:0:0: Direct-Access ATA IC35L120AVV207-0 V24O PQ: 0 ANSI: 5 > sd 5:0:0:0: [sdc] 241254720 512-byte hardware sectors (123522 MB) > sd 5:0:0:0: [sdc] Write Protect is off > sd 5:0:0:0: [sdc] Mode Sense: 00 3a 00 00 > sd 5:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't > support DPO or FUA > sd 5:0:0:0: [sdc] 241254720 512-byte hardware sectors (123522 MB) > sd 5:0:0:0: [sdc] Write Protect is off > sd 5:0:0:0: [sdc] Mode Sense: 00 3a 00 00 > sd 5:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't > support DPO or FUA > sdc: sdc1 < sdc5 sdc6 > > sd 5:0:0:0: [sdc] Attached SCSI disk > sd 5:0:0:0: Attached scsi generic sg3 type 0 > scsi 5:0:1:0: CD-ROM LITE-ON LTR-40125S ZS0P PQ: 0 ANSI: 5 > sr1: scsi3-mmc drive: 164x/48x writer cd/rw xa/form2 cdda tray > sr 5:0:1:0: Attached scsi CD-ROM sr1 > sr 5:0:1:0: Attached scsi generic sg4 type 5 - 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
