acpi_hpet panic on amd64

Wed May 30 11:43:48 UTC 2007

	My 6.2-STABLE box panics on boot trying to initialize
acpi_hpet0. The problem is "divide by zero" exception and takes
place in dev/acpica/acpi_hpet.c in acpi_hpet_attach. HPET_OFFSET_PERIOD
register is zero and there is no check for it. I've added this check for
my system, though I'm not sure it's the best solution. dmesg is attached
in case it might be useful.

-- 
Sincerely,

Oleksandr Tymoshenko
PBXpress Communications, Inc.
http://www.pbxpress.com
Tel./Fax.: +1 866 SIP PBX1  Ext. 656
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FreeBSD 6.2-STABLE #3: Wed May 30 11:04:17 UTC 2007
    root at wooster.pbxpress.com:/usr/obj/usr/src/sys/WOOSTER
WARNING: WITNESS option enabled, expect reduced performance.
ACPI APIC Table: <PTLTD  	 APIC  >
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ (2009.16-MHz K8-class CPU)
  Origin = "AuthenticAMD"  Id = 0x40fb2  Stepping = 2
  Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
  Features2=0x2001<SSE3,CX16>
  AMD Features=0xea500800<SYSCALL,NX,MMX+,FFXSR,RDTSCP,LM,3DNow!+,3DNow!>
  AMD Features2=0x1f<LAHF,CMP,SVM,ExtAPIC,CR8>
  Cores per package: 2
real memory  = 1039204352 (991 MB)
avail memory = 992591872 (946 MB)
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
MADT: Forcing active-low polarity and level trigger for SCI
ioapic0 <Version 1.1> irqs 0-23 on motherboard
kbd1 at kbdmux0
acpi0: <PTLTD   RSDT> on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1008-0x100b on acpi0
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pci0: <memory, RAM> at device 0.0 (no driver attached)
pci0: <memory, RAM> at device 0.1 (no driver attached)
pci0: <memory, RAM> at device 0.2 (no driver attached)
pci0: <memory, RAM> at device 0.3 (no driver attached)
pci0: <memory, RAM> at device 0.4 (no driver attached)
pci0: <memory, RAM> at device 0.5 (no driver attached)
pci0: <memory, RAM> at device 0.6 (no driver attached)
pci0: <memory, RAM> at device 0.7 (no driver attached)
pcib1: <ACPI PCI-PCI bridge> at device 2.0 on pci0
pci1: <ACPI PCI bus> on pcib1
pcib2: <ACPI PCI-PCI bridge> at device 3.0 on pci0
pci2: <ACPI PCI bus> on pcib2
pci0: <display, VGA> at device 5.0 (no driver attached)
pci0: <memory, RAM> at device 9.0 (no driver attached)
isab0: <PCI-ISA bridge> port 0x8800-0x887f at device 10.0 on pci0
isa0: <ISA bus> on isab0
pci0: <serial bus, SMBus> at device 10.1 (no driver attached)
ohci0: <OHCI (generic) USB controller> mem 0xf2204000-0xf2204fff irq 18 at device 11.0 on pci0
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: nVidia OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 8 ports with 8 removable, self powered
ehci0: <EHCI (generic) USB 2.0 controller> mem 0xf2208000-0xf22080ff irq 19 at device 11.1 on pci0
ehci0: [GIANT-LOCKED]
usb1: EHCI version 1.0
usb1: companion controller, 8 ports each: usb0
usb1: <EHCI (generic) USB 2.0 controller> on ehci0
usb1: USB revision 2.0
uhub1: nVidia EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub1: 8 ports with 8 removable, self powered
atapci0: <nVidia nForce MCP51 UDMA133 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x8c00-0x8c0f at device 13.0 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
atapci1: <nVidia nForce MCP51 SATA300 controller> port 0x8c40-0x8c47,0x8c34-0x8c37,0x8c38-0x8c3f,0x8c30-0x8c33,0x8c10-0x8c1f mem 0xf2205000-0xf2205fff irq 20 at device 14.0 on pci0
ata2: <ATA channel 0> on atapci1
ata3: <ATA channel 1> on atapci1
atapci2: <nVidia nForce MCP51 SATA300 controller> port 0x8c58-0x8c5f,0x8c4c-0x8c4f,0x8c50-0x8c57,0x8c48-0x8c4b,0x8c20-0x8c2f mem 0xf2206000-0xf2206fff irq 21 at device 15.0 on pci0
ata4: <ATA channel 0> on atapci2
ata5: <ATA channel 1> on atapci2
pcib3: <ACPI PCI-PCI bridge> at device 16.0 on pci0
pci4: <ACPI PCI bus> on pcib3
pci0: <multimedia> at device 16.1 (no driver attached)
nve0: <NVIDIA nForce MCP13 Networking Adapter> port 0x8c60-0x8c67 mem 0xf2207000-0xf2207fff irq 23 at device 20.0 on pci0
nve0: Ethernet address 00:30:05:a7:bc:30
miibus0: <MII bus> on nve0
rgephy0: <RTL8169S/8110S media interface> on miibus0
rgephy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-FDX, auto
nve0: Ethernet address: 00:30:05:a7:bc:30
acpi_hpet0: <High Precision Event Timer> iomem 0x1e0e000-0x1e0efff on acpi0
device_attach: acpi_hpet0 attach returned 22
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
acpi_hpet0: <High Precision Event Timer> iomem 0x1e0e000-0x1e0efff on acpi0
device_attach: acpi_hpet0 attach returned 12
orm0: <ISA Option ROM> at iomem 0xcf000-0xcffff 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
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
ukbd0: CHESEN USB Keyboard, rev 1.10/1.10, addr 2, iclass 3/1
kbd2 at ukbd0
uhid0: CHESEN USB Keyboard, rev 1.10/1.10, addr 2, iclass 3/1
Timecounters tick every 1.000 msec
acd0: DVDROM <HL-DT-STDVD-ROM GDR8164B/0L06> at ata0-master UDMA33
ad4: 76319MB <WDC WD800JD-00MSA1 10.01E01> at ata2-master SATA300
SMP: AP CPU #1 Launched!
Trying to mount root from ufs:/dev/ad4s1a