Over the past month or so, I’ve been investigating the BCM43602 chip, and its ability to: 1. work on freebsd using wifibox, 2. suspend with acpi’s s3/suspend-to-ram.
As it stands, when starting the wifibox service, a bhyve VM is created with Alpine Linux, and PCI passthrough is used to proxy the BCM43602 chip to the VM. When the service and VM starts, the following debugging messages can be observed:
Starting wifibox...
bridge0: bpf attached
bridge0: Ethernet address: 58:9c:fc:10:ff:c9
bridge0: changing name to 'wifibox0'
tap0: bpf attached
tap0: Ethernet address: 58:9c:fc:10:ff:d0
tap0: promiscuous mode enabled
wifibox0: link state changed to DOWN
pci0: driver added
found-> vendor=0x8086, dev=0x8c3a, revid=0x04
domain=0, bus=0, slot=22, func=0
class=07-80-00, hdrtype=0x00, mfdev=1
cmdreg=0x0006, statreg=0x0010, cachelnsz=0 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D3 current D0
MSI supports 1 message, 64 bit
pci0:0:22:0: reprobing on driver added
pci1: driver added
pci2: driver added
pci3: driver added
found-> vendor=0x14e4, dev=0x43ba, revid=0x01
domain=0, bus=3, slot=0, func=0
class=02-80-00, hdrtype=0x00, mfdev=0
cmdreg=0x0006, statreg=0x0010, cachelnsz=64 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D1 D2 D3 current D0
MSI supports 16 messages, 64 bit
pci0:3:0:0: reprobing on driver added
pci4: driver added
found-> vendor=0x14e4, dev=0x1570, revid=0x00
domain=0, bus=4, slot=0, func=0
class=04-80-00, hdrtype=0x00, mfdev=0
cmdreg=0x0006, statreg=0x0010, cachelnsz=64 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0
ppt0: using IRQ 45 for MSI ns)
intpin=a, irq=255
powerspec 3 supports D0 D1 D3 current D0
MSI supports 1 message, 64 bit
pci0:4:0:0: reprobing on driver added
pci0: driver added
found-> vendor=0x8086, dev=0x8c3a, revid=0x04
domain=0, bus=0, slot=22, func=0
class=07-80-00, hdrtype=0x00, mfdev=1
cmdreg=0x0006, statreg=0x0010, cachelnsz=0 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D3 current D0
MSI supports 1 message, 64 bit
pci0:0:22:0: reprobing on driver added
pci1: driver added
pci2: driver added
pci3: driver added
found-> vendor=0x14e4, dev=0x43ba, revid=0x01
domain=0, bus=3, slot=0, func=0
class=02-80-00, hdrtype=0x00, mfdev=0
cmdreg=0x0006, statreg=0x0010, cachelnsz=64 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D1 D2 D3 current D0
MSI supports 16 messages, 64 bit
pci0:3:0:0: reprobing on driver added
pci4: driver added
found-> vendor=0x14e4, dev=0x1570, revid=0x00
domain=0, bus=4, slot=0, func=0
class=04-80-00, hdrtype=0x00, mfdev=0
cmdreg=0x0006, statreg=0x0010, cachelnsz=64 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D1 D3 current D0
MSI supports 1 message, 64 bit
pci0:4:0:0: reprobing on driver added
ppt0 mem 0xa0800000-0xa0807fff,0xa0400000-0xa07fffff at device 0.0 on pci3
ppt0: attached
tap0: link state changed to UP
wifibox0: link state changed to UP
pci0:3:0:0: Transition from D0 to D3
pci3: set ACPI power state D3 on \134_SB_.PCI0.RP03.ARPT
pci3: set ACPI power state D0 on \134_SB_.PCI0.RP03.ARPT
..done
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 6 vector 50
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 0 vector 53
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 2 vector 51
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 4 vector 52
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 6 vector 50
ppt0: using IRQ 45 for MSI
vendor=0x14e4, dev=0x43ba, revid=0x01 aka pci0:3:0:0 aka pci3 is the BCM chip.
The VM can successfully connect to the chip and wifi works.
When it comes to suspend/resume however, things start to go awry. I have observed the following behavior:
- With wifibox is running and the system is suspended, it will not wakeup/resume – even with
debug.acpi.suspend_bounce=1. - Similarly, when wifibox is started and then stopped, the system will not wake up following a suspend.
- When wifibox is started/stopped and the vmm module is unloaded, the system will not even suspend – it completely freezes. The final message in syslog/console is:
acpi_timer0: switching timecounter, TSC-low -> ACPI-fast. - I can start and stop wifibox as many times as needed: the problem is when I unload vmm / suspend.
After some debugging, I discovered that I can freeze the system on-demand by: starting/stopping wifibox, and then attempting to read from the pci device, for example by using pciconf -lvc. Wifibox, by default, clears the pci forcefully-set driver using devctl clear driver -f ppt0. After wifibox is finished shutting down, manually running pciconf -lc pci0:3:0:0 will list the device as with no capabilities (note: I removed the clear driver invocation from the wifibox shutdown script and have manually run it to demonstrate the output):
Stopping wifibox...
tap0: link state changed to DOWN
wifibox0: link state changed to DOWN
pci0:3:0:0: Transition from D0 to D3
pci3: set ACPI power state D3 on \134_SB_.PCI0.RP03.ARPT
pci3: set ACPI power state D0 on \134_SB_.PCI0.RP03.ARPT
tap0: promiscuous mode disabled
..done
$ devctl clear driver -f ppt0
ppt0: detached
pci3: <network> at device 0.0 (no driver attached)
devctl: Failed to clear ppt0 driver: Device not configured
$ kldunload vmm if_bridge
$ pciconf -lvc pci0:3:0:0
none0@pci0:3:0:0: class=0x028000 rev=0x01 hdr=0x00 vendor=0x14e4 device=0x43ba subvendor=0x106b subdevice=0x0152
vendor = 'Broadcom Inc. and subsidiaries'
device = 'BCM43602 802.11ac Wireless LAN SoC'
class = network
$
Running the pciconf -lvc command again will cause a total system freeze. Before the clear driver command is run, pciconf returns the following:
ppt0@pci0:3:0:0: class=0x028000 rev=0x01 hdr=0x00 vendor=0x14e4 device=0x43ba subvendor=0x106b subdevice=0x0152
vendor = 'Broadcom Inc. and subsidiaries'
device = 'BCM43602 802.11ac Wireless LAN SoC'
class = network
cap 01[48] = powerspec 3 supports D0 D1 D2 D3 current D0
cap 05[58] = MSI supports 16 messages, 64 bit enabled with 1 message
cap 09[68] = vendor (length 68)
cap 10[ac] = PCI-Express 2 endpoint max data 128(256) RO NS
max read 1024
link x1(x1) speed 2.5(2.5) ASPM L0s/L1(L0s/L1) ClockPM enabled
ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
ecap 0003[13c] = Serial 1 b2cfcfffffdd6c96
ecap 0004[150] = Power Budgeting 1
ecap 0002[160] = VC 1 max VC0
ecap 0018[1b0] = LTR 1
ecap 0015[220] = Resizable BAR 1
ecap 001e[240] = L1 PM Substates 1
The pciconf source code shows that the system crash occurs exactly when ioctl(fd, PCIOCREAD, &pi) is called the second time.
Similarly, if clear driver is not executed and instead the vmm module is unloaded forcefully, pciconf -lvc does does display the full capabilities the first time it is executed, but on the second execution, causes a system freeze. In fact, after the vmm module is unloaded, every operation on the pci device causes the system to freeze (particularly every operation supported by devctl).
None of the sysctls worked, either:
hw.acpi.disable_on_poweroff
hw.pci.allow_unsupported_io_range
hw.pci.clear_bars
hw.pci.clear_buses
hw.pci.clear_pci
hw.pci.clear_pcib
hw.pci.do_power_resume
hw.pci.do_power_suspend
hw.pci.enable_aspm
hw.pci.enable_msi
hw.pci.enable_msix
hw.pci.pci_enable_pcie_e
hw.pci.pci_enable_pcie_hp
hw.pci.realloc_bars
hw.pci_do_power_nodriver
hw.usb.no_suspend_wait
So I took a different approach. As it turns out, it is possible to reset pci3, but in a slightly different sequence. We first need to disable the pcib4 bridge which bridges the pci3 adapter. With the modified wifibox script which does not run clear driver:
service wifibox onestartservice wifibox onestopkldunload vmm if_bridgedevctl disable -f pcib4– disable the pcib4 adapter.acpiconf -s 3– Suspend. Then resume.devctl enable pcib4service wifibox onestart
The output of running this can be seen below. Note that I have added some debugging messages into FreeBSD’s pci kernel module.
$ service wifibox onestop
Stopping wifibox....pcib4: Josh: pcib_release_resource
...OK
$ devctl disable -f pcib4
pcib4: Josh: calling bus_generic_detach()
pci3: Josh: calling bus_generic_detach()
ppt0: detached
pcib4: Josh: pcib_release_resource
pcib4: Josh: pcib_release_resource
pcib4: Josh: pcib_release_resource
pci3: detached
pcib4: detached
$ kldunload vmm if_bridge
$ acpiconf -s 3
$ devctl enable pcib4
pcib4: Josh: pcib_probe
pcib4: <ACPI PCI-PCI bridge> at device 28.2 on pci0
pcib4: Josh: pcib_attach_common
pcib4: Josh: pcib_setup_secbus
pcib4: Josh: pcib_probe_windows
pcib4: failed to allocate initial I/O port window: 0-0xfff
pcib4: failed to allocate initial memory window: 0-0xfffff
pcib4: failed to allocate initial prefetch window: 0-0xfffff
pcib4: domain 0
pcib4: secondary bus 3
pcib4: subordinate bus 3
pci3: <ACPI PCI bus> on pcib4
pcib4: Josh: pcib_read_ivar
pcib4: Josh: pcib_read_ivar
pcib4: Josh: pcib_alloc_resource
pci3: Josh: pcib_alloc_subbus
pcib4: allocated bus range (3-3) for rid 0 of pci3
pci3: domain=0, physical bus=3
pcib4: Josh: pcib_read_ivar
pcib4: Josh: pcib_read_ivar
found-> vendor=0x14e4, dev=0x43ba, revid=0x01
domain=0, bus=3, slot=0, func=0
class=02-80-00, hdrtype=0x00, mfdev=0
cmdreg=0x0000, statreg=0x0010, cachelnsz=0 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
MSI supports 16 messages, 64 bit
map[10]: type Memory, range 64, base 0, size 15, memory disabled
map[18]: type Memory, range 64, base 0, size 22, memory disabled
pcib6: Josh: pcib_probe
pci3: <network> at device 0.0 (no driver attached)
$ service wifibox onestart
bridge0: bpf attached
bridge0: Ethernet address: 58:9c:fc:10:ff:c9
bridge0: changing name to 'wifibox0'
tap0: bpf attached
tap0: Ethernet address: 58:9c:fc:10:ff:d0
tap0: promiscuous mode enabled
wifibox0: link state changed to DOWN
pci0: driver added
found-> vendor=0x8086, dev=0x8c3a, revid=0x04
domain=0, bus=0, slot=22, func=0
class=07-80-00, hdrtype=0x00, mfdev=1
cmdreg=0x0006, statreg=0x0010, cachelnsz=0 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D3 current D0
MSI supports 1 message, 64 bit
pci0:0:22:0: reprobing on driver added
pci1: driver added
pci2: driver added
pci3: driver added
found-> vendor=0x14e4, dev=0x43ba, revid=0x01
domain=0, bus=3, slot=0, func=0
class=02-80-00, hdrtype=0x00, mfdev=0
cmdreg=0x0000, statreg=0x0010, cachelnsz=0 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D1 D2 D3 current D0
MSI supports 16 messages, 64 bit
pci0:3:0:0: reprobing on driver added
pci4: driver added
found-> vendor=0x14e4, dev=0x1570, revid=0x00
domain=0, bus=4, slot=0, func=0
class=04-80-00, hdrtype=0x00, mfdev=0
cmdreg=0x0006, statreg=0x0010, cachelnsz=64 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D1 D3 current D0
MSI supports 1 message, 64 bit
pci0:4:0:0: reprobing on driver added
pci0: driver added
found-> vendor=0x8086, dev=0x8c3a, revid=0x04
domain=0, bus=0, slot=22, func=0
class=07-80-00, hdrtype=0x00, mfdev=1
cmdreg=0x0006, statreg=0x0010, cachelnsz=0 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D3 current D0
MSI supports 1 message, 64 bit
pci0:0:22:0: reprobing on driver added
pci1: driver added
pci2: driver added
pci3: driver added
found-> vendor=0x14e4, dev=0x43ba, revid=0x01
domain=0, bus=3, slot=0, func=0
class=02-80-00, hdrtype=0x00, mfdev=0
cmdreg=0x0000, statreg=0x0010, cachelnsz=0 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D1 D2 D3 current D0
MSI supports 16 messages, 64 bit
pci0:3:0:0: reprobing on driver added
pci4: driver added
found-> vendor=0x14e4, dev=0x1570, revid=0x00
domain=0, bus=4, slot=0, func=0
class=04-80-00, hdrtype=0x00, mfdev=0A
cmdreg=0x0006, statreg=0x0010, cachelnsz=64 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D1 D3 current D0
MSI supports 1 message, 64 bit
pci0:4:0:0: reprobing on driver added
ppt0 at device 0.0 on pci3
ppt0: attached
tap0: link state changed to UP
wifibox0: link state changed to UP
pci0:3:0:0: Transition from D0 to D3
pci3: set ACPI power state D3 on \134_SB_.PCI0.RP03.ARPT
pci3: set ACPI power state D0 on \134_SB_.PCI0.RP03.ARPT
..done
$ pciconf -lvc pci0:3:0:0
none2@pci0:3:0:0: class=0x028000 rev=0x01 hdr=0x00 vendor=0x14e4 device=0x43ba subvendor=0x106b subdevice=0x0133
vendor = 'Broadcom Inc. and subsidiaries'
device = 'BCM43602 802.11ac Wireless LAN SoC'
class = network
cap 01[48] = powerspec 3 supports D0 D1 D2 D3 current D0
cap 05[58] = MSI supports 16 messages, 64 bit
cap 09[68] = vendor (length 68)
cap 10[ac] = PCI-Express 2 endpoint max data 128(256) RO NS
max read 512
link x1(x1) speed 2.5(2.5) ASPM L0s/L1(L0s/L1) ClockPM enabled
ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
ecap 0003[13c] = Serial 1 b2cfcfffffdd6c96
ecap 0004[150] = Power Budgeting 1
ecap 0002[160] = VC 1 max VC0
ecap 0018[1b0] = LTR 1
ecap 0015[220] = Resizable BAR 1
ecap 001e[240] = L1 PM Substates 1
Of note is some differences in the “found->” line. The original:
cmdreg=0x0006, statreg=0x0010, cachelnsz=64 (dwords)
map[10]: type Memory, range 64, base 0xa0800000, size 15, enabled
map[18]: type Memory, range 64, base 0xa0400000, size 22, enable
and the new output after suspend/resume:
cmdreg=0x0000, statreg=0x0010, cachelnsz=0 (dwords)
map[10]: type Memory, range 64, base 0, size 15, memory disabled
map[18]: type Memory, range 64, base 0, size 22, memory disabled
Obviously also, the following new information is interesting:
pcib4: failed to allocate initial I/O port window: 0-0xfff
pcib4: failed to allocate initial memory window: 0-0xfffff
pcib4: failed to allocate initial prefetch window: 0-0xfffff
Likewise, the pciconf output is different:
1c1
< ppt0@pci0:3:0:0: class=0x028000 rev=0x01 hdr=0x00 vendor=0x14e4 device=0x43ba subvendor=0x106b subdevice=0x0152
---
> ppt0@pci0:3:0:0: class=0x028000 rev=0x01 hdr=0x00 vendor=0x14e4 device=0x43ba subvendor=0x106b subdevice=0x0133
6c6
< cap 05[58] = MSI supports 16 messages, 64 bit enabled with 1 message
---
> cap 05[58] = MSI supports 16 messages, 64 bit
9c9
< max read 1024
---
> max read 512
11c11
< ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
---
> ecap 0001[100] = AER 1 0 fatal 0 non-fatal 0 corrected
A different subdevice id and maxread? That’s strange.
(While writing this report, I discovered that others noted these strange changes, too. For example, In this QubesOS report, it’s noted that “the BCM43602 adapter’s subsystem changes the device number from 0x0173 to 0x0157”.)
Also of particular note is that when we restart wifibox the second time, the following debugging messages do not appear:
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 6 vector 50
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 0 vector 53
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 2 vector 51
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 4 vector 52
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 6 vector 50
ppt0: using IRQ 45 for MSI
Although wifibox started and there seems to be some activity in the pci buses, the VM cannot succesfully probe and attach to the chip. The dmesg output reveals:
[ 0.888052] brcmfmac: brcmf_chip_recognition: SB chip is not supported
[ 0.888055] brcmfmac: brcmf_pcie_probe: failed 14e4:43ba
So upon suspension/resume, the Linux kernel module no longer recognizes the chip – That’s probably because of the subdevice id changing: in the VM, /sys/devices/pci0000:00/0000:00:06.0/subsystem_device still contains the old 0x0152. Anyways, this Linux bug report notes that “This suggests the read32 (which maps to ioread32) returned all ones (0xffffffff), which may suggest power is gated to part of the device.”
No matter the amount of resets, suspends, deletes, and so on, of pcib3 and pcib4, the chip remains unrecognized and maintains that changed subdevice id. I eventually moved on to a new thought: can I release or powerdown the chip directly from the VM?
As it turns out, yes: by removing the pci device from the VM, “everything works as expected”™. I figured this out while writing this text: rubber duck debugging ftw.
First we start wifibox. No surprises or changes from the other invocations:
$ service wifibox onestart
bridge0: bpf attached
bridge0: Ethernet address: 58:9c:fc:10:ff:c9
bridge0: changing name to 'wifibox0'
tap0: bpf attached
tap0: Ethernet address: 58:9c:fc:10:ff:d0
tap0: promiscuous mode enabled
wifibox0: link state changed to DOWN
pci0: driver added
found-> vendor=0x8086, dev=0x8c3a, revid=0x04
domain=0, bus=0, slot=22, func=0
class=07-80-00, hdrtype=0x00, mfdev=1
cmdreg=0x0006, statreg=0x0010, cachelnsz=0 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D3 current D0
MSI supports 1 message, 64 bit
pci0:0:22:0: reprobing on driver added
pci1: driver added
pci2: driver added
pci3: driver added
found-> vendor=0x14e4, dev=0x43ba, revid=0x01
domain=0, bus=3, slot=0, func=0
class=02-80-00, hdrtype=0x00, mfdev=0
cmdreg=0x0006, statreg=0x0010, cachelnsz=64 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D1 D2 D3 current D0
MSI supports 16 messages, 64 bit
pci0:3:0:0: reprobing on driver added
pci4: driver added
found-> vendor=0x14e4, dev=0x1570, revid=0x00
domain=0, bus=4, slot=0, func=0
class=04-80-00, hdrtype=0x00, mfdev=0
cmdreg=0x0006, statreg=0x0010, cachelnsz=64 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D1 D3 current D0
MSI supports 1 message, 64 bit
pci0:4:0:0: reprobing on driver added
pci0: driver added
found-> vendor=0x8086, dev=0x8c3a, revid=0x04
domain=0, bus=0, slot=22, func=0
class=07-80-00, hdrtype=0x00, mfdev=1
cmdreg=0x0006, statreg=0x0010, cachelnsz=0 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D3 current D0
MSI supports 1 message, 64 bit
pci0:0:22:0: reprobing on driver added
pci1: driver added
pci2: driver added
pci3: driver added
found-> vendor=0x14e4, dev=0x43ba, revid=0x01
domain=0, bus=3, slot=0, func=0
class=02-80-00, hdrtype=0x00, mfdev=0
cmdreg=0x0006, statreg=0x0010, cachelnsz=64 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D1 D2 D3 current D0
MSI supports 16 messages, 64 bit
pci0:3:0:0: reprobing on driver added
pci4: driver added
found-> vendor=0x14e4, dev=0x1570, revid=0x00
domain=0, bus=4, slot=0, func=0
class=04-80-00, hdrtype=0x00, mfdev=0
cmdreg=0x0006, statreg=0x0010, cachelnsz=64 (dwords)
lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns)
intpin=a, irq=255
powerspec 3 supports D0 D1 D3 current D0
MSI supports 1 message, 64 bit
pci0:4:0:0: reprobing on driver added
ppt0 mem 0xa0800000-0xa0807fff,0xa0400000-0xa07fffff at device 0.0 on pci3
ppt0: attached
tap0: link state changed to UP
wifibox0: link state changed to UP
pci0:3:0:0: Transition from D0 to D3
pci3: set ACPI power state D3 on \134_SB_.PCI0.RP03.ARPT
pci3: set ACPI power state D0 on \134_SB_.PCI0.RP03.ARPT
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 6 vector 50
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 0 vector 53
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 2 vector 51
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 4 vector 52
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 6 vector 50
ppt0: using IRQ 45 for MSI
Then we connect to the VM and “remove” the device:
$ wifibox console
Connecting, type "~." to leave the session...
Connected
root
wifibox:~# echo 1 > /sys/devices/pci0000:00/0000:00:06.0/remove
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 0 vector 53
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 2 vector 51
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 4 vector 52
ppt0: using IRQ 45 for MSI
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 6 vector 50
ppt0: using IRQ 45 for MSI
wifibox:~# ~.
[EOT]
As we see here, as soon as we “remove” the device, those msi lines which were missing before have appeared.
Then we stop wifibox and unload vmm (and if_bridge):
$ sudo service wifibox onestop
Stopping wifibox....pci0:3:0:0: Transition from D0 to D3
pci3: set ACPI power state D3 on \_SB_.PCI0.RP03.ARPT
pci3: set ACPI power state D0 on \_SB_.PCI0.RP03.ARPT
...OK
$ sudo kldunload vmm if_bridge
ppt0: detached
pci3: <network> at device 0.0 (no driver attached)
Despite the vmm module being unloaded, the ppt0 driver on the pci3 device is still being used (which doesn’t matter):
ppt0@pci0:3:0:0: class=0x028000 rev=0x01 hdr=0x00 vendor=0x14e4 device=0x43ba subvendor=0x106b subdevice=0x0152
vendor = 'Broadcom Inc. and subsidiaries'
device = 'BCM43602 802.11ac Wireless LAN SoC'
class = network
cap 01[48] = powerspec 3 supports D0 D1 D2 D3 current D0
cap 05[58] = MSI supports 16 messages, 64 bit
cap 09[68] = vendor (length 68)
cap 10[ac] = PCI-Express 2 endpoint max data 128(256) RO NS
max read 1024
link x1(x1) speed 2.5(2.5) ASPM L0s/L1(L0s/L1) ClockPM enabled
ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
ecap 0003[13c] = Serial 1 b2cfcfffffdd6c96
ecap 0004[150] = Power Budgeting 1
ecap 0002[160] = VC 1 max VC0
ecap 0018[1b0] = LTR 1
ecap 0015[220] = Resizable BAR 1
ecap 001e[240] = L1 PM Substates 1
(Note: we can optionally clear the driver using devctl clear driver -f pci0:3:0:0 after wifibox stops, but it doesn’t seem to matter at all.)
Suspending the machine from here works, as does resuming. This is the output when starting after a suspension/resume, as well as another echo (this time with some extra debugging):
$ service wifibox onestart
user@evilco:~$ ppt0 mem 0xa0800000-0xa0807fff,0xa0400000-0xa07fffff at device 0.0 on pci3
ppt0: attached
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
pcib0: Josh: pcib_get_id
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 0 vector 53
ppt0: using IRQ 45 for MSI
pcib4: Josh: pcib_alloc_resource
pcib4: Josh: pcib_release_resource
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 2 vector 51
ppt0: using IRQ 45 for MSI
pcib4: Josh: pcib_alloc_resource
pcib4: Josh: pcib_release_resource
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 4 vector 52
ppt0: using IRQ 45 for MSI
pcib4: Josh: pcib_alloc_resource
pcib4: Josh: pcib_release_resource
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 6 vector 50
ppt0: using IRQ 45 for MSI
pcib4: Josh: pcib_alloc_resource
pcib4: Josh: pcib_release_resource
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 0 vector 53
ppt0: using IRQ 45 for MSI
pcib4: Josh: pcib_alloc_resource
wifibox:~# echo 1 > /sys/devices/pci0000:00/0000:00:06.0/remove
pcib4: Josh: pcib_release_resource
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 0 vector 53
ppt0: using IRQ 45 for MSI
pcib4: Josh: pcib_alloc_resource
pcib4: Josh: pcib_release_resource
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 2 vector 51
ppt0: using IRQ 45 for MSI
pcib4: Josh: pcib_alloc_resource
pcib4: Josh: pcib_release_resource
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 4 vector 52
ppt0: using IRQ 45 for MSI
pcib4: Josh: pcib_alloc_resource
pcib4: Josh: pcib_release_resource
ppt0: attempting to allocate 1 MSI vectors (16 supported)
msi: routing MSI IRQ 45 to local APIC 6 vector 50
ppt0: using IRQ 45 for MSI
pcib4: Josh: pcib_alloc_resource
pcib4: Josh: pcib_release_resource
When resuming, the pci3 device is still attached to ppt0 (if you don’t clear it). Starting wifibox again, it successfully connects to the chip. Happy days.
Using the following sequence of operations, suspend/resume completely works with wifibox:
- Start wifibox
echo 1 > /sys/devices/pci0000:00/0000:00:06.0/removein the VM- Stop wifibox
kldunload vmm if_bridge- suspend
- Start wifibox
- …etc…
Now comes the difficult part: where is the actual issue here located?
According to the Linux documentation, pci remove “does not involve any kind of hot-plug functionality”, “e.g. powering off the device”. So “removing” the device doesn’t power off the device. But what does it does, especially to invoke those “ppt0: attempting to allocate 1 MSI vectors (16 supported)” messages that are present?
In drivers/pci/remove.c, pci_stop_and_remove_bus_device calls pci_stop_bus_device and pci_remove_bus_device.
pci_stop_bus_device is as follows:
pci_pme_active(dev, false);
if (pci_dev_is_added(dev)) {
of_platform_depopulate(&dev->dev);
device_release_driver(&dev->dev);
pci_proc_detach_device(dev);
pci_remove_sysfs_dev_files(dev);
of_pci_remove_node(dev);
pci_dev_assign_added(dev, false);
}
pci_pme_active looks promising, but PME (see this link for an explanation of PME in a nutshell as well as ACPI sleep is already disabled by default for all the devices on this system, according to PCIM_PSTAT_PME. So that’s a no-op.
Anyways, brcmf_pcie_remove() is eventually called when the PCI device is being removed, and the following important actions are taken (with some pseudocode added):
brcmf_pcie_write_reg32(devinfo, devinfo->reginfo->mailboxmask, 0);
free_irq(pdev->irq, devinfo);
pci_disable_msi(pdev);
brcmf_pcie_reset_device(devinfo); // Disables ASPM, resets the watchdog, enables ASPM, and then does some weird thing where it reads the config for various configuration registers, then re-sets them.
pci_disable_bus_mastering(devinfo->pdev);
Which of these is necessary for the device to work after the system is shut down? I’m not sure. I don’t currently have any way of debugging Linux, as I’m traveling. Otherwise, I would just build a custom kernel and test which are necessary. Within the current context, to make matters “worse”, the VM doesn’t call “remove” for devices when the system is halted, either.
My solution here is to not debug further: it’s to simply ensure that the device is removed before a shutdown. The patch for this extremely annoying bug is therefore:
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
index ce482a3877e90a..865a2f25c8feb7 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
@@ -2711,6 +2711,7 @@ static struct pci_driver brcmf_pciedrvr = {
.id_table = brcmf_pcie_devid_table,
.probe = brcmf_pcie_probe,
.remove = brcmf_pcie_remove,
+ .shutdown = brcmf_pcie_remove,
#ifdef CONFIG_PM
.driver.pm = &brcmf_pciedrvr_pm,
#endif
This fixes QubesOS#3734, this Proxmox report, this other Hackintosh report, this Redhat report, and possibly this Linux report, too.
The issue here may have been obvious for someone with more experience with drivers and these Broadcom chips, but at least I’ve learnt a lot about how drivers in FreeBSD work, and Linux.
For the sake of anybody searchin this device via their favorite search engine in the future, I include some dumps from pciconf -lvc and devinfo -rv:
hostb0@pci0:0:0:0: class=0x060000 rev=0x08 hdr=0x00 vendor=0x8086 device=0x0d04 subvendor=0x106b subdevice=0x0147
vendor = 'Intel Corporation'
device = 'Crystal Well DRAM Controller'
class = bridge
subclass = HOST-PCI
cap 09[e0] = vendor (length 12) Intel cap 0 version 1
pcib1@pci0:0:1:0: class=0x060400 rev=0x08 hdr=0x01 vendor=0x8086 device=0x0d01 subvendor=0x106b subdevice=0x0147
vendor = 'Intel Corporation'
device = 'Crystal Well PCI Express x16 Controller'
class = bridge
subclass = PCI-PCI
cap 0d[88] = PCI Bridge subvendor=0x106b subdevice=0x0147
cap 01[80] = powerspec 3 supports D0 D3 current D0
cap 05[90] = MSI supports 1 message
cap 10[a0] = PCI-Express 2 root port max data 128(256)
max read 128
link x4(x8) speed 8.0(8.0) ASPM L1(L0s/L1)
slot 1 power limit 75000 mW
ecap 0002[100] = VC 1 max VC0
ecap 0005[140] = Root Complex Link Declaration 1
ecap 0019[d94] = PCIe Sec 1 lane errors 0
pcib2@pci0:0:1:1: class=0x060400 rev=0x08 hdr=0x01 vendor=0x8086 device=0x0d05 subvendor=0x106b subdevice=0x0147
vendor = 'Intel Corporation'
device = 'Crystal Well PCI Express x8 Controller'
class = bridge
subclass = PCI-PCI
cap 0d[88] = PCI Bridge subvendor=0x106b subdevice=0x0147
cap 01[80] = powerspec 3 supports D0 D3 current D0
cap 05[90] = MSI supports 1 message
cap 10[a0] = PCI-Express 2 root port max data 128(128)
max read 128
link x4(x8) speed 2.5(5.0) ASPM disabled(L0s/L1)
slot 2 power limit 75000 mW
ecap 0002[100] = VC 1 max VC0
ecap 0005[140] = Root Complex Link Declaration 1
ecap 0019[d94] = PCIe Sec 1 lane errors 0
vgapci0@pci0:0:2:0: class=0x030000 rev=0x08 hdr=0x00 vendor=0x8086 device=0x0d26 subvendor=0x106b subdevice=0x0147
vendor = 'Intel Corporation'
device = 'Crystal Well Integrated Graphics Controller'
class = display
subclass = VGA
cap 05[90] = MSI supports 1 message enabled with 1 message
cap 01[d0] = powerspec 2 supports D0 D3 current D0
cap 13[a4] = PCI Advanced Features: FLR TP
hdac0@pci0:0:3:0: class=0x040300 rev=0x08 hdr=0x00 vendor=0x8086 device=0x0d0c subvendor=0x106b subdevice=0x0147
vendor = 'Intel Corporation'
device = 'Crystal Well HD Audio Controller'
class = multimedia
subclass = HDA
cap 01[50] = powerspec 2 supports D0 D3 current D0
cap 05[60] = MSI supports 1 message enabled with 1 message
cap 10[70] = PCI-Express 1 root endpoint max data 128(128) FLR NS
max read 128
xhci0@pci0:0:20:0: class=0x0c0330 rev=0x05 hdr=0x00 vendor=0x8086 device=0x8c31 subvendor=0x8086 subdevice=0x7270
vendor = 'Intel Corporation'
device = '8 Series/C220 Series Chipset Family USB xHCI'
class = serial bus
subclass = USB
cap 01[70] = powerspec 2 supports D0 D3 current D0
cap 05[80] = MSI supports 8 messages, 64 bit enabled with 1 message
none0@pci0:0:22:0: class=0x078000 rev=0x04 hdr=0x00 vendor=0x8086 device=0x8c3a subvendor=0x8086 subdevice=0x7270
vendor = 'Intel Corporation'
device = '8 Series/C220 Series Chipset Family MEI Controller'
class = simple comms
cap 01[50] = powerspec 3 supports D0 D3 current D0
cap 05[8c] = MSI supports 1 message, 64 bit
hdac1@pci0:0:27:0: class=0x040300 rev=0x05 hdr=0x00 vendor=0x8086 device=0x8c20 subvendor=0x8086 subdevice=0x7270
vendor = 'Intel Corporation'
device = '8 Series/C220 Series Chipset High Definition Audio Controller'
class = multimedia
subclass = HDA
cap 01[50] = powerspec 2 supports D0 D3 current D0
cap 05[60] = MSI supports 1 message, 64 bit enabled with 1 message
cap 10[70] = PCI-Express 1 root endpoint max data 128(128) FLR
max read 128
ecap 0002[100] = VC 1 max VC1
pcib3@pci0:0:28:0: class=0x060400 rev=0xd5 hdr=0x01 vendor=0x8086 device=0x8c10 subvendor=0x8086 subdevice=0x7270
vendor = 'Intel Corporation'
device = '8 Series/C220 Series Chipset Family PCI Express Root Port'
class = bridge
subclass = PCI-PCI
cap 10[40] = PCI-Express 2 root port max data 128(128)
max read 128
link x0(x1) speed 0.0(5.0) ASPM disabled(L0s/L1)
slot 0 power limit 0 mW HotPlug(empty) surprise
cap 05[80] = MSI supports 1 message enabled with 1 message
cap 0d[90] = PCI Bridge subvendor=0x8086 subdevice=0x7270
cap 01[a0] = powerspec 3 supports D0 D3 current D0
pcib4@pci0:0:28:2: class=0x060400 rev=0xd5 hdr=0x01 vendor=0x8086 device=0x8c14 subvendor=0x8086 subdevice=0x7270
vendor = 'Intel Corporation'
device = '8 Series/C220 Series Chipset Family PCI Express Root Port'
class = bridge
subclass = PCI-PCI
cap 10[40] = PCI-Express 2 root port max data 128(128)
max read 128
link x1(x1) speed 2.5(5.0) ASPM L0s/L1(L0s/L1)
slot 2 power limit 100 mW
cap 05[80] = MSI supports 1 message
cap 0d[90] = PCI Bridge subvendor=0x8086 subdevice=0x7270
cap 01[a0] = powerspec 3 supports D0 D3 current D0
pcib5@pci0:0:28:3: class=0x060400 rev=0xd5 hdr=0x01 vendor=0x8086 device=0x8c16 subvendor=0x8086 subdevice=0x7270
vendor = 'Intel Corporation'
device = '8 Series/C220 Series Chipset Family PCI Express Root Port'
class = bridge
subclass = PCI-PCI
cap 10[40] = PCI-Express 2 root port max data 128(128)
max read 128
link x1(x1) speed 5.0(5.0) ASPM L1(L0s/L1)
slot 3 power limit 100 mW
cap 05[80] = MSI supports 1 message
cap 0d[90] = PCI Bridge subvendor=0x8086 subdevice=0x7270
cap 01[a0] = powerspec 3 supports D0 D3 current D0
isab0@pci0:0:31:0: class=0x060100 rev=0x05 hdr=0x00 vendor=0x8086 device=0x8c4b subvendor=0x8086 subdevice=0x7270
vendor = 'Intel Corporation'
device = 'HM87 Express LPC Controller'
class = bridge
subclass = PCI-ISA
cap 09[e0] = vendor (length 12) Intel cap 1 version 0
features: AMT, 4 PCI-e x1 slots
ichsmb0@pci0:0:31:3: class=0x0c0500 rev=0x05 hdr=0x00 vendor=0x8086 device=0x8c22 subvendor=0x8086 subdevice=0x7270
vendor = 'Intel Corporation'
device = '8 Series/C220 Series Chipset Family SMBus Controller'
class = serial bus
subclass = SMBus
pchtherm0@pci0:0:31:6: class=0x118000 rev=0x05 hdr=0x00 vendor=0x8086 device=0x8c24 subvendor=0x8086 subdevice=0x7270
vendor = 'Intel Corporation'
device = '8 Series Chipset Family Thermal Management Controller'
class = dasp
cap 01[50] = powerspec 3 supports D0 D3 current D0
cap 05[80] = MSI supports 1 message
ahci0@pci0:1:0:0: class=0x010601 rev=0x01 hdr=0x00 vendor=0x144d device=0xa801 subvendor=0x144d subdevice=0xa801
vendor = 'Samsung Electronics Co Ltd'
device = 'S4LN058A01[SSUBX] AHCI SSD Controller (Apple slot)'
class = mass storage
subclass = SATA
cap 01[40] = powerspec 3 supports D0 D3 current D0
cap 05[50] = MSI supports 8 messages, 64 bit enabled with 8 messages
cap 10[70] = PCI-Express 2 endpoint max data 128(128) FLR RO NS
max read 512
link x4(x4) speed 8.0(8.0) ASPM L1(L1) ClockPM enabled
ecap 0001[100] = AER 2 0 fatal 0 non-fatal 1 corrected
ecap 0003[148] = Serial 1 0000000000000000
ecap 0004[158] = Power Budgeting 1
ecap 0019[168] = PCIe Sec 1 lane errors 0
ecap 0018[188] = LTR 1
ecap 001e[190] = L1 PM Substates 1
none1@pci0:3:0:0: class=0x028000 rev=0x01 hdr=0x00 vendor=0x14e4 device=0x43ba subvendor=0x106b subdevice=0x0152
vendor = 'Broadcom Inc. and subsidiaries'
device = 'BCM43602 802.11ac Wireless LAN SoC'
class = network
cap 01[48] = powerspec 3 supports D0 D1 D2 D3 current D0
cap 05[58] = MSI supports 16 messages, 64 bit
cap 09[68] = vendor (length 68)
cap 10[ac] = PCI-Express 2 endpoint max data 128(256) RO NS
max read 1024
link x1(x1) speed 2.5(2.5) ASPM L0s/L1(L0s/L1) ClockPM enabled
ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
ecap 0003[13c] = Serial 1 b2cfcfffffdd6c96
ecap 0004[150] = Power Budgeting 1
ecap 0002[160] = VC 1 max VC0
ecap 0018[1b0] = LTR 1
ecap 0015[220] = Resizable BAR 1
ecap 001e[240] = L1 PM Substates 1
none2@pci0:4:0:0: class=0x048000 rev=0x00 hdr=0x00 vendor=0x14e4 device=0x1570 subvendor=0x14e4 subdevice=0x1570
vendor = 'Broadcom Inc. and subsidiaries'
device = '720p FaceTime HD Camera'
class = multimedia
cap 01[48] = powerspec 3 supports D0 D1 D3 current D0
cap 05[58] = MSI supports 1 message, 64 bit
cap 09[68] = vendor (length 68)
cap 10[ac] = PCI-Express 2 endpoint max data 128(512) RO NS
max read 512
link x1(x1) speed 5.0(5.0) ASPM L1(L0s/L1) ClockPM disabled
ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
ecap 0003[13c] = Serial 1 000000ffff000000
ecap 0004[150] = Power Budgeting 1
ecap 0002[160] = VC 1 max VC0
ecap 0018[1b0] = LTR 1
ecap 0015[220] = Resizable BAR 1
nexus0
efirtc0
cryptosoft0
aesni0
ram0
I/O memory addresses:
0x0-0x57fff
0x59000-0x9ffff
0x100000-0x78d00fff
0x78d49000-0x78d5cfff
0x78d8f000-0x78e39fff
0x78e8f000-0x78ed2fff
0x78eff000-0x78f84fff
0x78fdf000-0x78ffffff
0x100000000-0x47f5fffff
apic0
I/O memory addresses:
0xfec00000-0xfec0001f
smbios0
I/O memory addresses:
0x78f8b000-0x78f8b01e
acpi0
Interrupt request lines:
0x9
I/O ports:
0x2e-0x2f
0x4e-0x4f
0x61
0x63
0x65
0x67
0x80
0x92
0xb2-0xb3
0x800-0x87f
0x1800-0x187f
0xffff
I/O memory addresses:
0xe0000000-0xefffffff
0xfed10000-0xfed17fff
0xfed18000-0xfed18fff
0xfed19000-0xfed19fff
0xfed1c000-0xfed1ffff
0xfed20000-0xfed3ffff
0xfed45000-0xfed8ffff
0xfed90000-0xfed93fff
0xfee00000-0xfeefffff
0xff000000-0xffffffff
acpi_ec0 pnpinfo _HID=PNP0C09 _UID=0 _CID=none at handle=\_SB_.PCI0.LPCB.EC__
I/O ports:
0x62
0x66
cpu0 pnpinfo _HID=none _UID=0 _CID=none at handle=\_PR_.CPU0
acpi_perf0
est0
p4tcc0
acpi_throttle0
coretemp0
cpufreq0
cpu2 pnpinfo _HID=none _UID=0 _CID=none at handle=\_PR_.CPU1
acpi_perf2
est2
p4tcc2
acpi_throttle2
coretemp2
cpufreq2
cpu4 pnpinfo _HID=none _UID=0 _CID=none at handle=\_PR_.CPU2
acpi_perf4
est4
p4tcc4
acpi_throttle4
coretemp4
cpufreq4
cpu6 pnpinfo _HID=none _UID=0 _CID=none at handle=\_PR_.CPU3
acpi_perf6
est6
p4tcc6
acpi_throttle6
coretemp6
cpufreq6
cpu1 pnpinfo _HID=none _UID=0 _CID=none at handle=\_PR_.CPU4
acpi_perf1
est1
p4tcc1
acpi_throttle1
coretemp1
cpufreq1
cpu3 pnpinfo _HID=none _UID=0 _CID=none at handle=\_PR_.CPU5
acpi_perf3
est3
p4tcc3
acpi_throttle3
coretemp3
cpufreq3
cpu5 pnpinfo _HID=none _UID=0 _CID=none at handle=\_PR_.CPU6
acpi_perf5
est5
p4tcc5
acpi_throttle5
coretemp5
cpufreq5
cpu7 pnpinfo _HID=none _UID=0 _CID=none at handle=\_PR_.CPU7
acpi_perf7
est7
p4tcc7
acpi_throttle7
coretemp7
cpufreq7
pcib0 pnpinfo _HID=PNP0A08 _UID=0 _CID=PNP0A03 at handle=\_SB_.PCI0
I/O ports:
0xcf8-0xcff
pci0
PCI domain 0 bus numbers:
0
hostb0 pnpinfo vendor=0x8086 device=0x0d04 subvendor=0x106b subdevice=0x0147 class=0x060000 at slot=0 function=0 dbsf=pci0:0:0:0 handle=\_SB_.PCI0.MCHC
pcib1 pnpinfo vendor=0x8086 device=0x0d01 subvendor=0x106b subdevice=0x0147 class=0x060400 at slot=1 function=0 dbsf=pci0:0:1:0 handle=\_SB_.PCI0.PEG0
I/O memory addresses:
0xa0b00000-0xa0bfffff
PCI domain 0 bus numbers:
1
pci1
pcib1 bus numbers:
1
ahci0 pnpinfo vendor=0x144d device=0xa801 subvendor=0x144d subdevice=0xa801 class=0x010601 at slot=0 function=0 dbsf=pci0:1:0:0 handle=\_SB_.PCI0.PEG0.SSD0
Interrupt request lines:
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
pcib1 memory window:
0xa0b00000-0xa0b01fff
ahcich0 at channel=0
I/O memory addresses:
0xa0b00100-0xa0b0017f
pcib2 pnpinfo vendor=0x8086 device=0x0d05 subvendor=0x106b subdevice=0x0147 class=0x060400 at slot=1 function=1 dbsf=pci0:0:1:1 handle=\_SB_.PCI0.PEG1
I/O ports:
0x4000-0x6fff
I/O memory addresses:
0xa0d00000-0xacdfffff
0xace00000-0xb8dfffff
PCI domain 0 bus numbers:
5-155
pci2
pcib2 bus numbers:
5
vgapci0 pnpinfo vendor=0x8086 device=0x0d26 subvendor=0x106b subdevice=0x0147 class=0x030000 at slot=2 function=0 dbsf=pci0:0:2:0 handle=\_SB_.PCI0.IGPU
Interrupt request lines:
0x2c
I/O ports:
0x3000-0x303f
I/O memory addresses:
0x90000000-0x9fffffff
0xa0000000-0xa03fffff
drm0
drm1
lkpi_iic6
iicbus6
iic6 at addr=0
drm2
lkpi_iic7
iicbus7
iic7 at addr=0
drm3
drm4
lkpi_iic8
iicbus8
iic8 at addr=0
drm5
drm6
drmn0
drm128
lkpi_iic0
iicbus0
iic0 at addr=0
lkpi_iic1
iicbus1
iic1 at addr=0
lkpi_iic2
iicbus2
iic2 at addr=0
lkpi_iic3
iicbus3
iic3 at addr=0
lkpi_iic4
iicbus4
iic4 at addr=0
lkpi_iic5
iicbus5
iic5 at addr=0
fbd0
hdac0 pnpinfo vendor=0x8086 device=0x0d0c subvendor=0x106b subdevice=0x0147 class=0x040300 at slot=3 function=0 dbsf=pci0:0:3:0 handle=\_SB_.PCI0.HDAU
Interrupt request lines:
0x28
I/O memory addresses:
0xa0c10000-0xa0c13fff
hdacc0 pnpinfo vendor=0x8086 device=0x2807 revision=0x00 stepping=0x00 at cad=0
hdaa0 pnpinfo type=0x01 subsystem=0x80860101 at nid=1
pcm0 at nid=3
xhci0 pnpinfo vendor=0x8086 device=0x8c31 subvendor=0x8086 subdevice=0x7270 class=0x0c0330 at slot=20 function=0 dbsf=pci0:0:20:0 handle=\_SB_.PCI0.XHC1
Interrupt request lines:
0x29
I/O memory addresses:
0xa0c00000-0xa0c0ffff
usbus0
uhub0
wsp0 pnpinfo vendor=0x05ac product=0x0274 devclass=0x00 devsubclass=0x00 devproto=0x00 sernum="D3H74250UC1FTV4A76PF" release=0x0624 mode=host intclass=0x03 intsubclass=0x01 intprotocol=0x02 at bus=0 hubaddr=1 port=12 devaddr=3 interface=2 ugen=ugen0.3
usbhid0 pnpinfo vendor=0x05ac product=0x0274 devclass=0x00 devsubclass=0x00 devproto=0x00 sernum="D3H74250UC1FTV4A76PF" release=0x0624 mode=host intclass=0x03 intsubclass=0x00 intprotocol=0x00 at bus=0 hubaddr=1 port=12 devaddr=3 interface=0 ugen=ugen0.3
hidbus0
unknown pnpinfo page=0xff00 usage=0x000b bus=0x03 vendor=0x05ac product=0x0274 version=0x0624 at index=0
usbhid1 pnpinfo vendor=0x05ac product=0x0274 devclass=0x00 devsubclass=0x00 devproto=0x00 sernum="D3H74250UC1FTV4A76PF" release=0x0624 mode=host intclass=0x03 intsubclass=0x01 intprotocol=0x01 at bus=0 hubaddr=1 port=12 devaddr=3 interface=1 ugen=ugen0.3
hidbus1
hkbd1 pnpinfo page=0x0001 usage=0x0006 bus=0x03 vendor=0x05ac product=0x0274 version=0x0624 at index=0
unknown pnpinfo page=0x000c usage=0x0001 bus=0x03 vendor=0x05ac product=0x0274 version=0x0624 at index=1
unknown pnpinfo page=0xff00 usage=0x0006 bus=0x03 vendor=0x05ac product=0x0274 version=0x0624 at index=2
usbhid2 pnpinfo vendor=0x05ac product=0x0274 devclass=0x00 devsubclass=0x00 devproto=0x00 sernum="D3H74250UC1FTV4A76PF" release=0x0624 mode=host intclass=0x03 intsubclass=0x00 intprotocol=0x00 at bus=0 hubaddr=1 port=12 devaddr=3 interface=3 ugen=ugen0.3
hidbus2
unknown pnpinfo page=0xff00 usage=0x000d bus=0x03 vendor=0x05ac product=0x0274 version=0x0624 at index=0
usbhid3 pnpinfo vendor=0x05ac product=0x0274 devclass=0x00 devsubclass=0x00 devproto=0x00 sernum="D3H74250UC1FTV4A76PF" release=0x0624 mode=host intclass=0x03 intsubclass=0x00 intprotocol=0x00 at bus=0 hubaddr=1 port=12 devaddr=3 interface=4 ugen=ugen0.3
hidbus3
unknown pnpinfo page=0xff00 usage=0x0003 bus=0x03 vendor=0x05ac product=0x0274 version=0x0624 at index=0
unknown pnpinfo vendor=0x8086 device=0x8c3a subvendor=0x8086 subdevice=0x7270 class=0x078000 at slot=22 function=0 dbsf=pci0:0:22:0
I/O memory addresses:
0xa0c19100-0xa0c1910f
hdac1 pnpinfo vendor=0x8086 device=0x8c20 subvendor=0x8086 subdevice=0x7270 class=0x040300 at slot=27 function=0 dbsf=pci0:0:27:0 handle=\_SB_.PCI0.HDEF
Interrupt request lines:
0x2a
I/O memory addresses:
0xa0c14000-0xa0c17fff
hdacc1 pnpinfo vendor=0x1013 device=0x4208 revision=0x03 stepping=0x00 at cad=0
hdaa1 pnpinfo type=0x01 subsystem=0x106b8000 at nid=1
pcm1 at nid=19,18,16,28
pcm2 at nid=24
pcib3 pnpinfo vendor=0x8086 device=0x8c10 subvendor=0x8086 subdevice=0x7270 class=0x060400 at slot=28 function=0 dbsf=pci0:0:28:0
Interrupt request lines:
0x2b
PCI domain 0 bus numbers:
2
pcib4 pnpinfo vendor=0x8086 device=0x8c14 subvendor=0x8086 subdevice=0x7270 class=0x060400 at slot=28 function=2 dbsf=pci0:0:28:2 handle=\_SB_.PCI0.RP03
I/O memory addresses:
0xa0400000-0xa08fffff
PCI domain 0 bus numbers:
3
pci3
pcib4 bus numbers:
3
unknown pnpinfo vendor=0x14e4 device=0x43ba subvendor=0x106b subdevice=0x0152 class=0x028000 at slot=0 function=0 dbsf=pci0:3:0:0 handle=\_SB_.PCI0.RP03.ARPT
pcib4 memory window:
0xa0400000-0xa07fffff
0xa0800000-0xa0807fff
pcib5 pnpinfo vendor=0x8086 device=0x8c16 subvendor=0x8086 subdevice=0x7270 class=0x060400 at slot=28 function=3 dbsf=pci0:0:28:3 handle=\_SB_.PCI0.RP04
I/O memory addresses:
0x80000000-0x8fffffff
0xa0900000-0xa0afffff
PCI domain 0 bus numbers:
4
pci4
pcib5 bus numbers:
4
unknown pnpinfo vendor=0x14e4 device=0x1570 subvendor=0x14e4 subdevice=0x1570 class=0x048000 at slot=0 function=0 dbsf=pci0:4:0:0 handle=\_SB_.PCI0.RP04.CMRA
pcib5 memory window:
0xa0900000-0xa09fffff
0xa0a00000-0xa0a0ffff
pcib5 prefetch window:
0x80000000-0x8fffffff
isab0 pnpinfo vendor=0x8086 device=0x8c4b subvendor=0x8086 subdevice=0x7270 class=0x060100 at slot=31 function=0 dbsf=pci0:0:31:0 handle=\_SB_.PCI0.LPCB
isa0
sc0
vga0
atkbdc0
fdc0
ppc0
uart0
Interrupt request lines:
0x4
I/O ports:
0x3f8
uart1
ichsmb0 pnpinfo vendor=0x8086 device=0x8c22 subvendor=0x8086 subdevice=0x7270 class=0x0c0500 at slot=31 function=3 dbsf=pci0:0:31:3 handle=\_SB_.PCI0.SBUS
Interrupt request lines:
0x12
I/O ports:
0xefa0-0xefbf
I/O memory addresses:
0xa0c19000-0xa0c190ff
smbus0
pchtherm0 pnpinfo vendor=0x8086 device=0x8c24 subvendor=0x8086 subdevice=0x7270 class=0x118000 at slot=31 function=6 dbsf=pci0:0:31:6
I/O memory addresses:
0xa0c18000-0xa0c18fff
unknown pnpinfo _HID=none _UID=0 _CID=SMBUS at handle=\_SB_.PCI0.SBUS.BUS0
unknown pnpinfo _HID=none _UID=0 _CID=SMBUS at handle=\_SB_.PCI0.SBUS.BUS1
atdma0 pnpinfo _HID=PNP0200 _UID=0 _CID=none at handle=\_SB_.PCI0.LPCB.DMAC
DMA request lines:
4
I/O ports:
0x0-0x1f
0x81-0x91
0x93-0x9f
0xc0-0xdf
unknown pnpinfo _HID=INT0800 _UID=0 _CID=none at handle=\_SB_.PCI0.LPCB.FWHD
hpet0 pnpinfo _HID=PNP0103 _UID=0 _CID=PNP0C01 at handle=\_SB_.PCI0.LPCB.HPET
Interrupt request lines:
0x18
0x19
0x1a
0x1b
0x1c
0x1d
0x1e
0x1f
I/O memory addresses:
0xfed00000-0xfed03fff
unknown pnpinfo _HID=PNP0000 _UID=0 _CID=none at handle=\_SB_.PCI0.LPCB.IPIC
I/O ports:
0x20-0x21
0x24-0x25
0x28-0x29
0x2c-0x2d
0x30-0x31
0x34-0x35
0x38-0x39
0x3c-0x3d
0xa0-0xa1
0xa4-0xa5
0xa8-0xa9
0xac-0xad
0xb0-0xb1
0xb4-0xb5
0xb8-0xb9
0xbc-0xbd
0x4d0-0x4d1
fpupnp0 pnpinfo _HID=PNP0C04 _UID=0 _CID=none at handle=\_SB_.PCI0.LPCB.MATH
I/O ports:
0xf0
acpi_sysresource0 pnpinfo _HID=PNP0C02 _UID=2 _CID=none at handle=\_SB_.PCI0.LPCB.LDRC
atrtc0 pnpinfo _HID=PNP0B00 _UID=0 _CID=none at handle=\_SB_.PCI0.LPCB.RTC_
Interrupt request lines:
0x8
I/O ports:
0x70-0x71
attimer0 pnpinfo _HID=PNP0100 _UID=0 _CID=none at handle=\_SB_.PCI0.LPCB.TIMR
Interrupt request lines:
0x0
I/O ports:
0x40-0x43
0x50-0x53
asmc0 pnpinfo _HID=APP0001 _UID=0 _CID=SMC-HURONRIVER at handle=\_SB_.PCI0.LPCB.SMC_
I/O ports:
0x300-0x31f
I/O memory addresses:
0xfef00000-0xfef0ffff
unknown pnpinfo _HID=ACPI0008 _UID=0 _CID=SMC-ALS at handle=\_SB_.PCI0.LPCB.ALS0
unknown pnpinfo _HID=PNP0C09 _UID=0 _CID=none at handle=\_SB_.PCI0.LPCB.EC__ (disabled)
unknown pnpinfo _HID=ACPI0001 _UID=0 _CID=none at handle=\_SB_.PCI0.LPCB.EC__.SMB0 (disabled)
unknown pnpinfo _HID=ACPI0002 _UID=0 _CID=none at handle=\_SB_.PCI0.LPCB.EC__.SMB0.SBS0
unknown pnpinfo _HID=APP000B _UID=0 _CID=GMUX at handle=\_SB_.PCI0.LPCB.GMUX
I/O ports:
0x700-0x7fe
acpi_sysresource1 pnpinfo _HID=PNP0C02 _UID=1 _CID=none at handle=\_SB_.PCI0.PDRC
acpi_sysresource2 pnpinfo _HID=PNP0C01 _UID=2 _CID=none at handle=\_SB_.MEM2
pci_link0 pnpinfo _HID=PNP0C0F _UID=1 _CID=none at handle=\_SB_.LNKA
pci_link1 pnpinfo _HID=PNP0C0F _UID=2 _CID=none at handle=\_SB_.LNKB
pci_link2 pnpinfo _HID=PNP0C0F _UID=3 _CID=none at handle=\_SB_.LNKC
pci_link3 pnpinfo _HID=PNP0C0F _UID=4 _CID=none at handle=\_SB_.LNKD
pci_link4 pnpinfo _HID=PNP0C0F _UID=5 _CID=none at handle=\_SB_.LNKE
pci_link5 pnpinfo _HID=PNP0C0F _UID=6 _CID=none at handle=\_SB_.LNKF
pci_link6 pnpinfo _HID=PNP0C0F _UID=7 _CID=none at handle=\_SB_.LNKG
pci_link7 pnpinfo _HID=PNP0C0F _UID=8 _CID=none at handle=\_SB_.LNKH
battery0 pnpinfo _HID=PNP0C0A _UID=0 _CID=none at handle=\_SB_.BAT0
acpi_acad0 pnpinfo _HID=ACPI0003 _UID=0 _CID=none at handle=\_SB_.ADP1
acpi_lid0 pnpinfo _HID=PNP0C0D _UID=0 _CID=none at handle=\_SB_.LID0
acpi_button0 pnpinfo _HID=PNP0C0C _UID=0 _CID=none at handle=\_SB_.PWRB
unknown pnpinfo _HID=APP0002 _UID=14 _CID=BACKLIGHT at handle=\_SB_.PNLF
acpi_button1 pnpinfo _HID=PNP0C0E _UID=0 _CID=none at handle=\_SB_.SLPB
acpi_timer0 pnpinfo unknown
ACPI I/O ports:
0x1808-0x180b