ATAng: ata1-slave CDRW is only sometimes detected

[Lefteris Chatzibarbas]

Hello,

I have the following units on a MSI KT4V (KT400/VT8235) motherboard
(80pin cable is used for both primary and secondary controller):

  ata0-master:	WDC WD800JB ATA-6 disk
  ata0-slave:	
  ata1-master:	TEAC DV-516E DVDROM drive
  ata1-slave:	TEAC CD-W524E CDRW drive

For about a week I have the aforementioned setup.  I had the same setup
before ATAng got committed, but with a different DVDROM drive, without
problems.  When ATAng got committed I had only the CDRW drive as
ata1-master, also, without problems.


Most of the time the CDRW drive is not detected and I get:

  atapci0: <VIA 8235 UDMA133 controller> port 0xfc00-0xfc0f at device
  17.1 on pci0
  ata0: reset tp1 mask=03 ostat0=50 ostat1=00 
  ata0-master: stat=0x50 err=0x01 lsb=0x00 msb=0x00
  ata0-slave: stat=0x50 err=0x01 lsb=0x00 msb=0x00 
  ata0: reset tp2 mask=03 stat0=50 stat1=00 devices=0x1<ATA_MASTER>
  ata0: at 0x1f0 irq 14 on atapci0
  ata0: [MPSAFE]
  ata1: reset tp1 mask=03 ostat0=50 ostat1=50
  ata1-master: stat=0x90 err=0x01 lsb=0x14 msb=0xeb
  ata1-slave: stat=0x90 err=0x7f lsb=0x7f msb=0x7f
  ata1-master: stat=0x10 err=0x01 lsb=0x14 msb=0xeb
  ata1: reset tp2 mask=03 stat0=10 stat1=7f devices=0x4<ATAPI_MASTER>
  ata1: at 0x170 irq 15 on atapci0
  ata1: [MPSAFE]
  ata: ata0 already exists; skipping it
  ata: ata1 already exists; skipping it

  ata0-master: pio=0x0c wdma=0x22 udma=0x45 cable=80pin
  ad0: setting UDMA100 on VIA 8235 chip
  ad0: <WDC WD800JB-00ETA0/77.07W77> ATA-6 disk at ata0-master
  ad0: 76319MB (156301488 sectors), 155061 C, 16 H, 63 S, 512 B
  ad0: 16 secs/int, 1 depth queue, UDMA100
  ata1-master: pio=0x0c wdma=0x22 udma=0x42 cable=40pin
  acd0: setting PIO4 on VIA 8235 chip
  acd0: <DV-516E/3.04> DVDROM drive at ata1 as master
  acd0: read 8250KB/s (8250KB/s), 256KB buffer, PIO4
  acd0: Reads: CDR, CDRW, CDDA stream, DVDROM, DVDR, packet
  acd0: Writes:
  acd0: Audio: play, 256 volume levels
  acd0: Mechanism: ejectable tray, unlocked
  acd0: Medium: no/blank disc


Sometimes the CDRW drive is detected and I get:

  atapci0: <VIA 8235 UDMA133 controller> port 0xfc00-0xfc0f at device 17.1 on pci0
  ata0: reset tp1 mask=03 ostat0=50 ostat1=00
  ata0-master: stat=0x50 err=0x01 lsb=0x00 msb=0x00
  ata0-slave: stat=0x50 err=0x01 lsb=0x00 msb=0x00
  ata0: reset tp2 mask=03 stat0=50 stat1=00 devices=0x1<ATA_MASTER>
  ata0: at 0x1f0 irq 14 on atapci0
  ata0: [MPSAFE]
  ata1: reset tp1 mask=03 ostat0=50 ostat1=50
  ata1-master: stat=0x10 err=0x01 lsb=0x14 msb=0xeb
  ata1-slave: stat=0x10 err=0x01 lsb=0x14 msb=0xeb
  ata1: reset tp2 mask=03 stat0=10 stat1=00
  devices=0xc<ATAPI_SLAVE,ATAPI_MASTER>
  ata1: at 0x170 irq 15 on atapci0
  ata1: [MPSAFE]
  ata: ata0 already exists; skipping it
  ata: ata1 already exists; skipping it

  ata0-master: pio=0x0c wdma=0x22 udma=0x45 cable=80pin
  ad0: setting UDMA100 on VIA 8235 chip
  ad0: <WDC WD800JB-00ETA0/77.07W77> ATA-6 disk at ata0-master
  ad0: 76319MB (156301488 sectors), 155061 C, 16 H, 63 S, 512 B
  ad0: 16 secs/int, 1 depth queue, UDMA100
  ata1-slave: pio=0x0c wdma=0x22 udma=0x42 cable=80pin
  ata1-master: pio=0x0c wdma=0x22 udma=0x42 cable=40pin
  acd0: setting PIO4 on VIA 8235 chip 
  acd0: <DV-516E/3.04> DVDROM drive at ata1 as master
  acd0: read 8250KB/s (8250KB/s), 256KB buffer, PIO4
  acd0: Reads: CDR, CDRW, CDDA stream, DVDROM, DVDR, packet
  acd0: Writes:
  acd0: Audio: play, 256 volume levels
  acd0: Mechanism: ejectable tray, unlocked 
  acd0: Medium: no/blank disc
  acd1: unknown transfer phase 
  acd1: setting PIO4 on VIA 8235 chip
  acd1: <CD-W524E/1.0A> CDRW drive at ata1 as slave
  acd1: read 6890KB/s (6890KB/s) write 4134KB/s (4134KB/s), 1404KB buffer, PIO4
  acd1: Reads: CDR, CDRW, CDDA stream, packet
  acd1: Writes: CDR, CDRW, test write, burnproof
  acd1: Audio: play, 256 volume levels
  acd1: Mechanism: ejectable tray, unlocked
  acd1: Medium: no/blank disc


The kernel used for the above messages, was built on Mon Sep  8 21:39:20
EEST 2003, and the complete verbose output of dmesg is available from:

  http://members.hellug.gr/lefcha/dmesg0.out
  http://members.hellug.gr/lefcha/dmesg1.out


Thanks