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I have a Promise RAID controller on a S845WD1-E Intel
motherboard.  pciide is using DMA/33 instead of 100 with this
chipset, and I'm not quite sure how to remedy the problem.

Attached is the dmesg.  I'm using 1.6.1 release.

-- 
D. E. Evans <sinuhe@gnu.org>
<http://www.deevans.net>

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 ffffffffbfebfbff<PGE,MCA,CMOV,FGPAT,PSE36,CFLUSH,DS,ACPI,MMX>
cpu0: features ffffffffbfebfbff<FXSR,SSE,SSE2,SS,HTT,TM,B31>
total memory = 511 MB
avail memory = 467 MB
using 6144 buffers containing 26280 KB of memory
BIOS32 rev. 0 found at 0xfda74
mainbus0 (root)
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
pchb0 at pci0 dev 0 function 0
pchb0: Intel 82845 Host (rev. 0x11)
pchb0: random number generator enabled
agp0 at pchb0: aperture at 0xf8000000, size 0x4000000
ppb0 at pci0 dev 1 function 0: Intel 82845 AGP (rev. 0x11)
pci1 at ppb0 bus 1
pci1: memory space enabled
ppb1 at pci0 dev 30 function 0: Intel 82801BA Hub-to-PCI Bridge (rev. 0x05)
pci2 at ppb1 bus 2
pci2: i/o space, memory space enabled
emuxki0 at pci2 dev 9 function 0: Creative Labs SBLive! EMU 10000 (audio multimedia, revision 0x0a)
emuxki0: interrupting at irq 11
emuxki0: SigmaTel STAC9708 codec; 18 bit DAC, 18 bit ADC, SigmaTel 3D
audio0 at emuxki0: full duplex, mmap, independent
Creative Labs PCI Gameport Joystick (miscellaneous input, revision 0x0a) at pci2 dev 9 function 1 not configured
fxp0 at pci2 dev 12 function 0: i82550 Ethernet, rev 13
fxp0: interrupting at irq 11
fxp0: Ethernet address 00:07:e9:53:1d:dc
inphy0 at fxp0 phy 1: i82555 10/100 media interface, rev. 4
inphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
fxp1 at pci2 dev 13 function 0: i82550 Ethernet, rev 13
fxp1: interrupting at irq 11
fxp1: Ethernet address 00:07:e9:53:1d:de
inphy1 at fxp1 phy 1: i82555 10/100 media interface, rev. 4
inphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
pciide0 at pci2 dev 14 function 0: Promise Ultra100/ATA Bus Master IDE Accelerator (rev. 0x02)
pciide0: bus-master DMA support present
pciide0: primary channel configured to native-PCI mode
pciide0: using irq 9 for native-PCI interrupt
wd0 at pciide0 channel 0 drive 0: <ST380011A>
wd0: drive supports 16-sector PIO transfers, LBA48 addressing
wd0: 76319 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 156301488 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5 (Ultra/100) (using DMA data transfers)
pciide0: secondary channel configured to native-PCI mode
wd1 at pciide0 channel 1 drive 0: <ST380011A>
wd1: drive supports 16-sector PIO transfers, LBA48 addressing
wd1: 76319 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 156301488 sectors
wd1: 32-bit data port
wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
wd1(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 5 (Ultra/100) (using DMA data transfers)
vga1 at pci2 dev 15 function 0: ATI Technologies Rage XL (rev. 0x27)
wsdisplay0 at vga1 kbdmux 1: console (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
pcib0 at pci0 dev 31 function 0
pcib0: Intel 82801BA LPC Interface Bridge (rev. 0x05)
pciide1 at pci0 dev 31 function 1: Intel 82801BA IDE Controller (ICH2) (rev. 0x05)
pciide1: bus-master DMA support present
pciide1: primary channel wired to compatibility mode
pciide1: primary channel ignored (disabled)
pciide1: secondary channel wired to compatibility mode
atapibus0 at pciide1 channel 1: 2 targets
cd0 at atapibus0 drive 0: <SONY    CD-RW  CRX225E, , QYB2> type 5 cdrom removable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
cd1 at atapibus0 drive 1: <SONY DVD-ROM DDU1612, , DYS3> type 5 cdrom removable
cd1: 32-bit data port
cd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
pciide1: secondary channel interrupting at irq 15
cd0(pciide1:1:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
cd1(pciide1:1:1): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
uhci0 at pci0 dev 31 function 2: Intel 82801BA USB Controller (rev. 0x05)
uhci0: interrupting at irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
Intel 82801BA SMBus Controller (SMBus serial bus, revision 0x05) at pci0 dev 31 function 3 not configured
uhci1 at pci0 dev 31 function 4: Intel 82801BA USB Controller (rev. 0x05)
uhci1: interrupting at irq 10
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
isa0 at pcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
lpt0 at isa0 port 0x378-0x37b irq 7
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
isapnp0: no ISA Plug 'n Play devices found
biomask ef65 netmask ef65 ttymask ffe7
Kernelized RAIDframe activated
pciide0:0:0: lost interrupt
	type: ata tc_bcount: 512 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x21
wd0: transfer error, downgrading to Ultra-DMA mode 2
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
wd0d: DMA error reading fsbn 0 (wd0 bn 0; cn 0 tn 0 sn 0), retrying
pciide0:0:0: lost interrupt
	type: ata tc_bcount: 512 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x21
wd0: transfer error, downgrading to Ultra-DMA mode 1
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 1 (using DMA data transfers)
wd0d: DMA error reading fsbn 0 (wd0 bn 0; cn 0 tn 0 sn 0), retrying
pciide0:0:0: lost interrupt
	type: ata tc_bcount: 512 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x21
wd0: transfer error, downgrading to DMA mode 2
wd0(pciide0:0:0): using PIO mode 4, DMA mode 2 (using DMA data transfers)
wd0d: DMA error reading fsbn 0 (wd0 bn 0; cn 0 tn 0 sn 0), retrying
pciide0:0:0: lost interrupt
	type: ata tc_bcount: 512 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x21
wd0: transfer error, downgrading to PIO mode 4
wd0(pciide0:0:0): using PIO mode 4
wd0d: DMA error reading fsbn 0 (wd0 bn 0; cn 0 tn 0 sn 0), retrying
wd0: soft error (corrected)
pciide0:1:0: lost interrupt
	type: ata tc_bcount: 512 tc_skip: 0
pciide0:1:0: bus-master DMA error: missing interrupt, status=0x1
wd1: transfer error, downgrading to Ultra-DMA mode 2
wd1(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
wd1d: DMA error reading fsbn 0 (wd1 bn 0; cn 0 tn 0 sn 0), retrying
pciide0:1:0: lost interrupt
	type: ata tc_bcount: 512 tc_skip: 0
pciide0:1:0: bus-master DMA error: missing interrupt, status=0x1
wd1: transfer error, downgrading to Ultra-DMA mode 1
wd1(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 1 (using DMA data transfers)
wd1d: DMA error reading fsbn 0 (wd1 bn 0; cn 0 tn 0 sn 0), retrying
pciide0:1:0: lost interrupt
	type: ata tc_bcount: 512 tc_skip: 0
pciide0:1:0: bus-master DMA error: missing interrupt, status=0x1
wd1: transfer error, downgrading to DMA mode 2
wd1(pciide0:1:0): using PIO mode 4, DMA mode 2 (using DMA data transfers)
wd1d: DMA error reading fsbn 0 (wd1 bn 0; cn 0 tn 0 sn 0), retrying
pciide0:1:0: lost interrupt
	type: ata tc_bcount: 512 tc_skip: 0
pciide0:1:0: bus-master DMA error: missing interrupt, status=0x1
wd1: transfer error, downgrading to PIO mode 4
wd1(pciide0:1:0): using PIO mode 4
wd1d: DMA error reading fsbn 0 (wd1 bn 0; cn 0 tn 0 sn 0), retrying
wd1: soft error (corrected)
warning: double match for boot device (wd0, wd1)
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)
cd0: no disk label

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