Hi,
I am experiencing some strange behaviour. When I have heavy HDD
activity (running MythTV, for instance), I get 17 of these:
[ 90.004956] hda: dma_intr: bad DMA status (dma_stat=76)
[ 90.004963] hda: dma_intr: status=0x50 { DriveReady SeekComplete }
[ 90.004966] ide: failed opcode was: unknown
Followed by the IDE subsystem giving up on DMA:
[ 97.732622] hda: DMA disabled
[ 97.732629] hdb: DMA disabled
[ 97.809464] ide0: reset: success
I'm running with an Asus M2A-VM mainboard with an ATI SB600 chipset.
The harddrive is an plain old PATA drive, attached as master with a
cdrom drive as slave.
I'm running the Ubuntu Hardy development kernel, 2.6.24-9, although
same problem occurs with 2.6.22-14 (again Ubuntu kernel).
I have looked in the linux-ide mlist archives but haven't been able to
find anything related.
Thank you for your time,
Paul
Output from hdparm -I /dev/hda (after DMA has been disabled):
/dev/hda:
ATA device, with non-removable media
Model Number: Maxtor 6Y080P0
Serial Number: Y33ZYEKE
Firmware Revision: YAR41BW0
Standards:
Used: ATA/ATAPI-7 T13 1532D revision 0
Supported: 7 6 5 4
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBAuser addressable sectors: 160086528
device size with M = 1024*1024: 78167 MBytes
device size with M = 1000*1000: 81964 MBytes (81 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 = 0
Advanced power management level: unknown setting (0x)
Recommended acoustic management value: 192, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
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:
SMART feature set
Security Mode feature set
*Power Management feature set
*Write cache
*Look-ahead
*Host Protected Area feature set
*WRITE_VERIFY command
*WRITE_BUFFER command
*READ_BUFFER command
*NOP cmd
*DOWNLOAD_MICROCODE
Advanced Power Management feature set
SET_MAX security extension
*Automatic Acoustic Management feature set
*Device Configuration Overlay feature set
*Mandatory FLUSH_CACHE
*FLUSH_CACHE_EXT
*SMART error logging
*SMART self-test
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
not supported: enhanced erase
HW reset results:
CBLID- above Vih
Device num = 0 determined by the jumper
Checksum: correct
Output from hdparm /dev/hda after DMA has been disabled:
/dev/hda:
multcount = 0 (off)
IO_support= 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 0 (off)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 65535/16/63, sectors = 160086528, start = 0
Output from lspci -v:
00:00.0 Host bridge: ATI Technologies Inc RS690 Host Bridge
Subsystem: ASUSTeK Computer Inc. Unknown device 826d
Flags: bus master, 66MHz, medium devsel, latency 64
00:01.0 PCI bridge: ATI Technologies Inc RS690 PCI to PCI Bridge
(Internal gfx) (prog-if 00 [Normal decode])
Flags: bus master, 66MHz, medium devsel, latency 99
Bus: primary=00, secondary=01, subordinate=01, sec-latency=68
I/O behind bridge: e000-efff
Memory behind bridge: fde0-fdff
Prefetchable memory behind bridge: f000-f7ff
Capabilities: [44] HyperTransport: MSI Mapping
Capabilities: [b0] Subsystem: ATI Technologies Inc RS690 PCI
to PCI Bridge (Internal gfx)
00:07.0 PCI bridge: ATI Technologies Inc RS690 PCI to PCI Bridge (PCI
Express Port 3) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: d000-dfff
Memory behind bridge: fdb0-fdbf
Prefetchable memory behind bridge: fda0-fdaf
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Root Port (Slot-) IRQ 0
Capabilities: [80] Message Signalled Interrupts: Mask- 64bit-
Queue=0/0 Enable+
Capabilities:
