Old problems strike back? (No ata1-slave without disk)

[Vladimir Kushnir]

Hello,
A problem here: after ATA-MKIII has been committed there's a lot of timeouts 
( "SETFEATURES SET TRANSFER MODE" and after acd1 reinit "MODE_SENCE_BIG" and 
then boot process just hangs) on ata1-slave (DVD-ROM) without disk. 
Everything goes perfectly all right when disk in, but that's not a solution, 
is it? EVERYTHING worked OK before this commit.

Environment: old but reliable 440BX-based  MB (Chaintech 6BTM), the only HD 
(ad0) on external CMD-649 based card, ATA0-master - ATAPI CDRW (acd0), 
ATA1-slave - ATAPI DVD-ROM (acd1). All cables are plugged correctly.

Dmesg output (with my current working setup) is attached

Any additional information?

Regards,
Vladimir
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FreeBSD 6.0-CURRENT #1: Mon Apr  4 09:30:05 EEST 2005
    root at kushnir1.kiev.ua:/usr/obj/usr/src/sys/KUSHNIR
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Pentium III/Pentium III Xeon/Celeron (451.02-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x673  Stepping = 3
  Features=0x387f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,PN,MMX,FXSR,SSE>
real memory  = 268369920 (255 MB)
avail memory = 253243392 (241 MB)
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <123456 AWRDACPI> on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-safe" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x4008-0x400b on acpi0
cpu0: <ACPI CPU (3 Cx states)> on acpi0
acpi_throttle0: <ACPI CPU Throttling> on cpu0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff,0x4000-0x4041,0x5000-0x500f on acpi0
pci_link0: <ACPI PCI Link LNKA> irq 11 on acpi0
pci_link1: <ACPI PCI Link LNKB> irq 0 on acpi0
pci_link2: <ACPI PCI Link LNKC> irq 5 on acpi0
pci_link3: <ACPI PCI Link LNKD> irq 10 on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <Intel 82443BX (440 BX) host to PCI bridge> mem 0xd0000000-0xd3ffffff at device 0.0 on pci0
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
drm0: <Matrox G550 (AGP)> mem 0xd8000000-0xd9ffffff,0xd4000000-0xd4003fff,0xd5000000-0xd57fffff irq 11 at device 0.0 on pci1
info: [drm] AGP at 0xd0000000 64MB
info: [drm] Initialized mga 3.1.0 20021029 on minor 0
isab0: <PCI-ISA bridge> at device 2.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX4 UDMA33 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xf000-0xf00f at device 2.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port 0xd000-0xd01f irq 10 at device 2.2 on pci0
uhci0: [GIANT-LOCKED]
usb0: <Intel 82371AB/EB (PIIX4) USB controller> on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
intpm0: <Intel 82371AB Power management controller> port 0x5000-0x500f irq 9 at device 2.3 on pci0
intpm0: I/O mapped 5000
intpm0: intr IRQ 9 enabled revision 0
intpm0: [GIANT-LOCKED]
intsmb0: <Intel PIIX4 SMBUS Interface> on intpm0
smbus1: <System Management Bus> on intsmb0
smb0: <SMBus generic I/O> on smbus1
intpm0: PM I/O mapped 4000 
bktr0: <BrookTree 878> mem 0xdb008000-0xdb008fff irq 11 at device 13.0 on pci0
bktr0: [GIANT-LOCKED]
bktr0: Card has no configuration EEPROM. Cannot determine card make.
bktr0: MT2032: Companycode=2c2c Part=2c Revision=2c
bktr0: MT2032 not found or unknown type
bktr0: Pinnacle/Miro TV, Temic NTSC tuner.
pci0: <multimedia> at device 13.1 (no driver attached)
atapci1: <CMD 649 UDMA100 controller> port 0xd400-0xd407,0xd800-0xd803,0xdc00-0xdc07,0xe000-0xe003,0xe400-0xe40f irq 5 at device 15.0 on pci0
ata2: <ATA channel 0> on atapci1
ata3: <ATA channel 1> on atapci1
pcm0: <Yamaha DS-1E (YMF724F)> mem 0xdb000000-0xdb007fff irq 10 at device 16.0 on pci0
pcm0: <SigmaTel STAC9704 AC97 Codec>
pcm0: [GIANT-LOCKED]
acpi_tz0: <Thermal Zone> on acpi0
fdc0: <floppy drive controller> port 0x3f2-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
ppc0: <Standard parallel printer port> port 0x378-0x37f irq 7 on acpi0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
ppbus0: <Parallel port bus> on ppc0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
pps0: <Pulse per second Timing Interface> on ppbus0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model IntelliMouse, device ID 3
pmtimer0 on isa0
orm0: <ISA Option ROM> at iomem 0xc0000-0xc8fff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
fb0 at vga0
Timecounter "TSC" frequency 451024674 Hz quality 800
Timecounters tick every 1.000 msec
atapicam0: <ATAPI CAM Attachment> on ata0
acd0: CDRW <NEC CD-RW NR-9100A/2.12> at ata0-master UDMA33
atapicam1: <ATAPI CAM Attachment> on ata1
acd1: DVDROM <HL-DT-STDVD-ROM GDR8162B/0015> at ata1-slave UDMA33
atapicam2: <ATAPI CAM Attachment> on ata2
ad0: 57241MB <WDC WD600JB-00CRA1 17.07W17> at ata2-master UDMA100
atapicam3: <ATAPI CAM Attachment> on ata3
cd0 at ata0 bus 0 target 0 lun 0
cd0: <_NEC CD-RW NR-9100A 2.12> Removable CD-ROM SCSI-0 device 
cd0: 33.000MB/s transfers
cd0: Attempt to query device size failed: NOT READY, Medium not present
cd1 at ata1 bus 0 target 1 lun 0
cd1: <HL-DT-ST DVD-ROM GDR8162B 0015> Removable CD-ROM SCSI-0 device 
cd1: 33.000MB/s transfers
cd1: cd present [2104345 x 2048 byte records]
Trying to mount root from ufs:/dev/ad0s2a