DMA disabled and busy errors

Adrian Bridgett (bridgett@hursley.ibm.com)
Mon, 29 Mar 1999 11:41:03 +0100


I got loads of these over the weekend. Spec appended below.

Mar 28 20:01:00 wyvern rsync[25353]: connect from 9.134.13.62
Mar 28 20:01:00 wyvern kernel: hdc: status error: status=0xf2 { Busy }
Mar 28 20:01:00 wyvern kernel: hdc: DMA disabled
Mar 28 20:01:00 wyvern kernel: hdd: DMA disabled
Mar 28 20:01:00 wyvern kernel: hdc: drive not ready for command
Mar 28 20:01:00 wyvern kernel: ide1: reset: success
Mar 28 20:01:03 wyvern rsync[25354]: connect from 9.134.13.62
Mar 28 20:01:10 wyvern kernel: hdc: irq timeout: status=0xf2 { Busy }
Mar 28 20:01:11 wyvern kernel: ide1: reset: success
Mar 28 20:01:21 wyvern kernel: hdc: irq timeout: status=0xf2 { Busy }
Mar 28 20:01:21 wyvern kernel: end_request: I/O error, dev 16:01 (hdc),
sector 5 882512
Mar 28 20:01:21 wyvern kernel: hdc: status error: status=0xf2 { Busy }
Mar 28 20:01:21 wyvern kernel: hdc: drive not ready for command
Mar 28 20:01:21 wyvern kernel: ide1: reset: success
Mar 28 20:01:31 wyvern kernel: hdc: irq timeout: status=0xf2 { Busy }
Mar 28 20:01:31 wyvern kernel: ide1: reset: success
Mar 28 20:01:41 wyvern kernel: hdc: irq timeout: status=0xf2 { Busy }
Mar 28 20:01:41 wyvern kernel: end_request: I/O error, dev 16:01 (hdc),
sector 5 882512

2.2.4 on a PII-450. IBM 300PL, hdparm -i /dev/hdc:
/dev/hdc:

Model=IBM-DTTA-351680, FwRev=T51IA73A, SerialNo=WJ0WK101207
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=32760/16/63, TrkSize=0, SectSize=0, ECCbytes=34
BuffType=3(DualPortCache), BuffSize=462kB, MaxMultSect=16, MultSect=16
DblWordIO=no, maxPIO=2(fast), DMA=yes, maxDMA=2(fast)
CurCHS=32760/16/63, CurSects=33022080, LBA=yes
LBA CHS=1023/512/63 Remapping, LBA=yes, LBAsects=33022080
tDMA={min:120,rec:120}, DMA modes: sword0 sword1 sword2 mword0 mword1 mword2
IORDY=on/off, tPIO={min:240,w/IORDY:120}, PIO modes: mode3 mode4
UDMA modes: mode0 mode1 *mode2
PIIX4: IDE controller on PCI bus 00 dev 11
PIIX4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xfff0-0xfff7, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xfff8-0xffff, BIOS settings: hdc:DMA, hdd:pio

dmesg:
hda: QUANTUM FIREBALL EX6.4A, ATA DISK drive
hdc: IBM-DTTA-351680, ATA DISK drive
hdd: CD-ROM CDU701-F, ATAPI CDROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: QUANTUM FIREBALL EX6.4A, 6149MB w/418kB Cache, CHS=784/255/63, UDMA
hdc: IBM-DTTA-351680, 16124MB w/462kB Cache, CHS=32760/16/63, UDMA
hdd: ATAPI 32X CD-ROM drive, 128kB Cache

Cheers

Adrian

Adrian Bridgett <bridgett@hursley.ibm.com>
Internal: 7-245528 External: 01962-815528

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