Problem with SiI3114 SATA RAID using 5.3-BETA1-20040823

I'm trying to upgrade a TYAN Tiger K8WS S2875S from FreeBSD-5.2.1-p8 to
5.3-BETA1-20040823.

It fails because instead of seeing the SiI3114 as ar0 (RAID-1) it sees two
separate disks:

ad4: 194481MB <Maxtor 6Y200M0/YAR51HW0> [395136/16/63] at ata2-master SATA150
ad6: 194481MB <Maxtor 6Y200M0/YAR51HW0> [395136/16/63] at ata3-master SATA150

I don't think I should upgrade just one half of the mirror so I abort the
upgrade.

When booting 5.2.1-p8

GEOM: create disk ad4 dp=0xffffff003b2f6aa0
ad4: 194481MB <Maxtor 6Y200M0> [395136/16/63] at ata2-master UDMA100
GEOM: create disk ad6 dp=0xffffff003b2f62a0
ad6: 194481MB <Maxtor 6Y200M0> [395136/16/63] at ata3-master UDMA100
GEOM: create disk ar0 dp=0xffffff0000d7fa70
ar0: 194480MB <ATA RAID1 array> [24792/255/63] status: READY subdisks:
 disk0 READY on ad4 at ata2-master
 disk1 READY on ad6 at ata3-master
Mounting root from ufs:/dev/ar0s1a

When booting 5.3-BETA1

Copyright (c) 1992-2004 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD 5.3-BETA1-20040823 #0: Mon Aug 23 11:03:37 UTC 2004
    root_at_quynh.NUXI.org:/usr/obj/usr/src/sys/GENERIC
WARNING: WITNESS option enabled, expect reduced performance.
ACPI APIC Table: <A M I  OEMAPIC >
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Opteron(tm) Processor 246 (1993.31-MHz K8-class CPU)
  Origin = "AuthenticAMD"  Id = 0xf58  Stepping = 8
 
Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
  AMD Features=0xe0500800<SYSCALL,NX,MMX+,LM,3DNow+,3DNow>
real memory  = 1073676288 (1023 MB)
avail memory = 1020493824 (973 MB)
MADT: Forcing active-low polarity and level trigger for SCI
ioapic0 <Version 1.1> irqs 0-23 on motherboard
acpi0: <A M I OEMXSDT> on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-safe" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x5008-0x500b on acpi0
cpu0: <ACPI CPU> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
pci2: <ACPI PCI bus> on pcib1
pci2: <display, VGA> at device 0.0 (no driver attached)
pci2: <display> at device 0.1 (no driver attached)
pcib2: <ACPI PCI-PCI bridge> at device 6.0 on pci0
pci1: <ACPI PCI bus> on pcib2
ohci0: <OHCI (generic) USB controller> mem 0xff4fc000-0xff4fcfff irq 19 at
device 0.0 on pci1
ohci0: [GIANT-LOCKED]
usb0: OHCI version 1.0, legacy support
usb0: SMM does not respond, resetting
usb0: <OHCI (generic) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: AMD OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 3 ports with 3 removable, self powered
ohci1: <OHCI (generic) USB controller> mem 0xff4fd000-0xff4fdfff irq 19 at
device 0.1 on pci1
ohci1: [GIANT-LOCKED]
usb1: OHCI version 1.0, legacy support
usb1: SMM does not respond, resetting
usb1: <OHCI (generic) USB controller> on ohci1
usb1: USB revision 1.0
uhub1: AMD OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 3 ports with 3 removable, self powered
em0: <Intel(R) PRO/1000 Network Connection, Version - 1.7.25> port
0x8880-0x88bf mem 0xff4a0000-0xff4bffff,0xff4c0000-0xff4dffff irq 18 at device
3.0 on pci1
em0: [GIANT-LOCKED]
em0: Ethernet address: 00:e0:81:28:99:c4
em0:  Speed:N/A  Duplex:N/A
atapci0: <SiI 3114 SATA150 controller> port
0x9400-0x940f,0x9480-0x9483,0x9800-0x9807,0x9880-0x9883,0x9c00-0x9c07 mem
0xff4ffc00-0xff4fffff irq 19 at device 5.0 on pci1
ata2: channel #0 on atapci0
ata3: channel #1 on atapci0
ata4: channel #2 on atapci0
ata5: channel #3 on atapci0
fwohci0: <VIA Fire II (VT6306)> port 0x8c00-0x8c7f mem 0xff4ff000-0xff4ff7ff
irq 17 at device 10.0 on pci1
fwohci0: [GIANT-LOCKED]
fwohci0: OHCI version 1.0 (ROM=1)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 00:e0:81:00:00:30:12:53
fwohci0: Phy 1394a available S400, 2 ports.
fwohci0: Link S400, max_rec 2048 bytes.
firewire0: <IEEE1394(FireWire) bus> on fwohci0
fwe0: <Ethernet over FireWire> on firewire0
if_fwe0: Fake Ethernet address: 02:e0:81:30:12:53
fwe0: Ethernet address: 02:e0:81:30:12:53
sbp0: <SBP-2/SCSI over FireWire> on firewire0
fwohci0: Initiate bus reset
fwohci0: node_id=0xc800ffc0, gen=1, CYCLEMASTER mode
firewire0: 1 nodes, maxhop <= 0, cable IRM = 0 (me)
firewire0: bus manager 0 (me)
uhci0: <VIA 83C572 USB controller> port 0x9000-0x901f irq 17 at device 11.0 on
pci1
uhci0: [GIANT-LOCKED]
usb2: <VIA 83C572 USB controller> on uhci0
usb2: USB revision 1.0
uhub2: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
uhci1: <VIA 83C572 USB controller> port 0x9080-0x909f irq 18 at device 11.1 on
pci1
uhci1: [GIANT-LOCKED]
usb3: <VIA 83C572 USB controller> on uhci1
usb3: USB revision 1.0
uhub3: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub3: 2 ports with 2 removable, self powered
pci1: <serial bus, USB> at device 11.2 (no driver attached)
isab0: <PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci1: <AMD 8111 UDMA133 controller> port
0xffa0-0xffaf,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 7.1 on pci0
ata0: channel #0 on atapci1
ata1: channel #1 on atapci1
pci0: <serial bus, SMBus> at device 7.2 (no driver attached)
pci0: <bridge, PCI-unknown> at device 7.3 (no driver attached)
pci0: <multimedia, audio> at device 7.5 (no driver attached)
acpi_button0: <Power Button> on acpi0
atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
atkbd0: <AT Keyboard> flags 0x1 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
sio0: configured irq 4 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0 port 0x3f8-0x3ff irq 4 on acpi0
sio0: type 16550A
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
sio1 port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
fdc0: <floppy drive controller (FDE)> port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on
acpi0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
ppc0 port 0x378-0x37f irq 7 on acpi0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
orm0: <ISA Option ROMs> at iomem 0xcb000-0xcf7ff,0xc0000-0xcafff 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
Timecounter "TSC" frequency 1993314155 Hz quality 800
Timecounters tick every 0.976 msec
md0: Preloaded image </boot/mfsroot> 4194304 bytes at 0xffffffff808e5db0
acpi_cpu: throttling enabled, 8 steps (100% to 12.5%), currently 100.0%
ATAPI_RESET time = 40us
acd0: CDRW <SONY CD-RW CRX230ED/4YS1> at ata0-master UDMA33
ad4: 194481MB <Maxtor 6Y200M0/YAR51HW0> [395136/16/63] at ata2-master SATA150
ad6: 194481MB <Maxtor 6Y200M0/YAR51HW0> [395136/16/63] at ata3-master SATA150
Mounting root from ufs:/dev/md0
em0: Link is up 100 Mbps Full Duplex

Thanks for any advice as how to upgrade this system.