Alan Cox wrote:
Sounds to me like the usual case of people putting CF convertors onto
spec compliant cables and ending up with electrical problems. If you
stick additional connectors, wires and plugs onto the cable it goes out
of spec.
I've got reasonable evidence now that this is not the case.
I've acquired a new CF card that is capable of UDMA2, and with the same
connectors, wiring and adaptor (i.e. I popped out the MWDMA card and
inserted the UDMA one), I can now boot and read data on both devices
without error at reasonable speeds.
Looks to me that there's a problem with either the specific MWDMA card
(Sandisk Ultra II) or more generally with putting MWDMA and UDMA on the
same cable.
cheers,
Malcolm
--
Here's the bootlog etc with the new CF card
ata_piix 0000:00:1f.1: version 2.11
scsi0 : ata_piix
scsi1 : ata_piix
ata1: PATA max UDMA/100 cmd 0x000101f0 ctl 0x000103f6 bmdma 0x0001ffa0
irq 14
ata2: PATA max UDMA/100 cmd 0x00010170 ctl 0x00010376 bmdma 0x0001ffa8
irq 15
ata1.00: ATA-4: TRANSCEND, 20070319, max UDMA/66
ata1.00: 3980592 sectors, multi 0: LBA
ata1.01: ATA-7: SAMSUNG HD400LD, WQ100-14, max UDMA/100
ata1.01: 781422768 sectors, multi 16: LBA48
ata1.00: limited to UDMA/33 due to 40-wire cable
ata1.01: limited to UDMA/33 due to 40-wire cable
ata1.00: configured for UDMA/33
ata1.01: configured for UDMA/33
ata2.00: ATAPI: LG CD-ROM CRN-8245B, 1.18, max UDMA/33
ata2.00: configured for UDMA/33
scsi 0:0:0:0: Direct-Access ATA TRANSCEND 2007 PQ: 0 ANSI: 5
scsi 0:0:1:0: Direct-Access ATA SAMSUNG HD400LD WQ10 PQ: 0 ANSI: 5
scsi 1:0:0:0: CD-ROM LG CD-ROM CRN-8245B 1.18 PQ: 0 ANSI: 5
sd 0:0:0:0: [sda] 3980592 512-byte hardware sectors (2038 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: disabled, read cache: enabled, doesn't
support DP
O or FUA
sd 0:0:0:0: [sda] 3980592 512-byte hardware sectors (2038 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: disabled, read cache: enabled, doesn't
support DP
O or FUA
sda: sda1
sd 0:0:0:0: [sda] Attached SCSI disk
sd 0:0:1:0: [sdb] 781422768 512-byte hardware sectors (400088 MB)
sd 0:0:1:0: [sdb] Write Protect is off
sd 0:0:1:0: [sdb] Mode Sense: 00 3a 00 00
sd 0:0:1:0: [sdb] Write cache: enabled, read cache: enabled, doesn't
support DPO
or FUA
sd 0:0:1:0: [sdb] 781422768 512-byte hardware sectors (400088 MB)
sd 0:0:1:0: [sdb] Write Protect is off
sd 0:0:1:0: [sdb] Mode Sense: 00 3a 00 00
sd 0:0:1:0: [sdb] Write cache: enabled, read cache: enabled, doesn't
support DPO
or FUA
sdb: sdb1
sd 0:0:1:0: [sdb] Attached SCSI disk
# hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: TRANSCEND
Serial Number: 0 2000210E
Firmware Revision: 20070319
Standards:
Supported: 4
Likely used: 5
Configuration:
Logical max current
cylinders 3949 3949
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 3980592
LBA user addressable sectors: 3980592
device size with M = 1024*1024: 1943 MBytes
device size with M = 1000*1000: 2038 MBytes (2 GB)
Capabilities:
LBA, IORDY(may be)(cannot be disabled)
Standby timer values: spec'd by Vendor
R/W multiple sector transfer: Max = 1 Current = 0
Advanced power management level: unknown setting (0x0000)
DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
Power Management feature set
WRITE_BUFFER command
READ_BUFFER command
NOP cmd
CFA feature set
Advanced Power Management feature set
HW reset results:
CBLID- below Vih
Device num = 0
Integrity word not set (found 0x0000, expected 0x36a5)
# hdparm --direct -Tt /dev/sdb
/dev/sdb:
Timing O_DIRECT cached reads: 64 MB in 2.05 seconds = 31.15 MB/sec
Timing O_DIRECT disk reads: 94 MB in 3.06 seconds = 30.71 MB/sec
# hdparm --direct -Tt /dev/sda
/dev/sda:
Timing O_DIRECT cached reads: 60 MB in 2.01 seconds = 29.84 MB/sec
Timing O_DIRECT disk reads: 90 MB in 3.02 seconds = 29.80 MB/sec
And my original report:
My PATA hard disk is crippled by CRC errors when it's on the same
cable as a 1GB SanDisk Ultra II CompactFlash card in CF to IDE adaptor.
Any ideas why?
By swapping around components, I've established that the problem is
unlikely due to the cable (which is 50cm long 80-wire), hard disk or
controller. When I swap to another, slower CF card (one that only
supports PIO rather than MWDMA), the error goes away and the hard disk
operates happily at UDMA/33.
No errors are reported for the CF card I/O.
The adaptor card is unbranded, model CF-IDE40 V.A1. It's a
double-sided type, but I'm only using one of the two CF sockets.
The spec sheet says
* Accord with: CF spec Ver2.0 and IDE/ATA-33 spec.
* Standard IDE interface: true-IDE mode, support DMA-33 transfer mode
I see the errors both with the old IDE code in 2.6.18 and with libata in 2.6.22
cheers,
Malcolm
--
Here are the relevant dmesg lines:
ata_piix 0000:00:1f.1: version 2.11
PCI: Enabling device 0000:00:1f.1 (0005 -> 0007)
ACPI: PCI Interrupt 0000:00:1f.1[A] -> Link [LNKC] -> GSI 11 (level, low) -> IRQ
11
PCI: Setting latency timer of device 0000:00:1f.1 to 64
scsi0 : ata_piix
scsi1 : ata_piix
ata1: PATA max UDMA/100 cmd 0x000101f0 ctl 0x000103f6 bmdma 0x0001ffa0 irq 14
ata2: PATA max UDMA/100 cmd 0x00010170 ctl 0x00010376 bmdma 0x0001ffa8 irq 15
ata1.00: CFA: SanDisk SDCFH-1024, HDX 4.07, max MWDMA2
ata1.00: 2001888 sectors, multi 0: LBA
ata1.01: ATA-7: SAMSUNG HD400LD, WQ100-14, max UDMA/100
ata1.01: 781422768 sectors, multi 0: LBA48
ata1.01: limited to UDMA/33 due to 40-wire cable
ata1.00: configured for MWDMA2
ata1.01: configured for UDMA/33
ata2.00: ATAPI: LG CD-ROM CRN-8245B, 1.18, max UDMA/33
ata2.00: configured for UDMA/33
scsi 0:0:0:0: Direct-Access ATA SanDisk SDCFH-10 HDX PQ: 0 ANSI: 5
scsi 0:0:1:0: Direct-Access ATA SAMSUNG HD400LD WQ10 PQ: 0 ANSI: 5
scsi 1:0:0:0: CD-ROM LG CD-ROM CRN-8245B 1.18 PQ: 0 ANSI: 5
sd 0:0:0:0: [sda] 2001888 512-byte hardware sectors (1025 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: disabled, read cache: enabled, doesn't support DPO or FUA
sd 0:0:0:0: [sda] 2001888 512-byte hardware sectors (1025 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: disabled, read cache: enabled, doesn't support DPO or FUA
sda: sda1
sd 0:0:0:0: [sda] Attached SCSI removable disk
sd 0:0:1:0: [sdb] 781422768 512-byte hardware sectors (400088 MB)
sd 0:0:1:0: [sdb] Write Protect is off
sd 0:0:1:0: [sdb] Mode Sense: 00 3a 00 00
sd 0:0:1:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sd 0:0:1:0: [sdb] 781422768 512-byte hardware sectors (400088 MB)
sd 0:0:1:0: [sdb] Write Protect is off
sd 0:0:1:0: [sdb] Mode Sense: 00 3a 00 00
sd 0:0:1:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sdb:<3>ata1.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
ata1.01: (BMDMA stat 0x25)
ata1.01: cmd c8/00:08:00:00:00/00:00:00:00:00/f0 tag 0 cdb 0x0 data 4096 in
res 51/84:00:07:00:00/00:00:00:00:00/f0 Emask 0x10 (ATA bus error)
ata1: soft resetting port
[subsequently ata1.01 is downrated to UDMA/25 and finally PIO4]
# hdparm -I /dev/sda
/dev/sda:
CompactFlash ATA device, with removable media
Model Number: SanDisk SDCFH-1024
Serial Number: 004123D2804C2249
Firmware Revision: HDX 4.07
Standards:
Supported: 4
Likely used: 4
Configuration:
Logical max current
cylinders 1986 1986
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 2001888
LBA user addressable sectors: 2001888
device size with M = 1024*1024: 977 MBytes
device size with M = 1000*1000: 1024 MBytes (1 GB)
Capabilities:
LBA, IORDY(may be)(cannot be disabled)
Standby timer values: spec'd by Vendor
R/W multiple sector transfer: Max = 4 Current = 0
DMA: mdma0 mdma1 *mdma2
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* CFA feature set
# hdparm -I /dev/sdb
/dev/sdb:
ATA device, with non-removable media
Model Number: SAMSUNG HD400LD
Serial Number: S0AXJ1MP308674
Firmware Revision: WQ100-14
Standards:
Used: ATA/ATAPI-7 T13 1532D revision 4a
Supported: 7 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: 268435455
LBA48 user addressable sectors: 781422768
device size with M = 1024*1024: 381554 MBytes
device size with M = 1000*1000: 400088 MBytes (400 GB)
Capabilities:
LBA, IORDY(can be disabled)
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 16 Current = ?
Recommended acoustic management value: 254, 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
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
Power-Up In Standby feature set
SET_FEATURES required to spinup after power up
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
Media Card Pass-Through
* General Purpose Logging feature set
* SMART Command Transport (SCT) feature set
* SCT Long Sector Access (AC1)
* SCT LBA Segment Access (AC2)
* SCT Error Recovery Control (AC3)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
supported: enhanced erase
228min for SECURITY ERASE UNIT. 228min for ENHANCED SECURITY ERASE UNIT.
HW reset results:
CBLID- above Vih
Device num = 1 determined by CSEL
Checksum: correct
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