https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285993
--- Comment #13 from Jim Long <freebsd-bugzi...@umpquanet.com> ---
Your hunch seems correct. So I shot it full of 'printf's:
diff --git a/sys/dev/pci/pci_pci.c b/sys/dev/pci/pci_pci.c
index 06e8c2bc8433..b94d27314f49 100644
--- a/sys/dev/pci/pci_pci.c
+++ b/sys/dev/pci/pci_pci.c
@@ -1071,20 +1071,32 @@ pcib_hotplug_inserted(struct pcib_softc *sc)
/* Pretend the card isn't present if a detach is forced. */
if (sc->flags & PCIB_DETACHING)
+{
+device_printf(sc->dev, "(1) PCIB_DETACHING\n");
return (false);
+}
/* Card must be present in the slot. */
if ((sc->pcie_slot_sta & PCIEM_SLOT_STA_PDS) == 0)
+{
+device_printf(sc->dev, "(2) PCIEM_SLOT_STA_PDS\n");
return (false);
+}
/* A power fault implicitly turns off power to the slot. */
if (sc->pcie_slot_sta & PCIEM_SLOT_STA_PFD)
+{
+device_printf(sc->dev, "(3) PCIEM_SLOT_STA_PFD\n");
return (false);
+}
/* If the MRL is disengaged, the slot is powered off. */
if (sc->pcie_slot_cap & PCIEM_SLOT_CAP_MRLSP &&
(sc->pcie_slot_sta & PCIEM_SLOT_STA_MRLSS) != 0)
+{
+device_printf(sc->dev, "(4) CAP_MRLSP && STA_MRLSS\n");
return (false);
+}
return (true);
}
@@ -1868,8 +1880,10 @@ pcib_child_present(device_t dev, device_t child)
int retval;
retval = bus_child_present(dev);
+device_printf(sc->dev, "(1) retval == %d\n", retval);
if (retval != 0 && sc->flags & PCIB_HOTPLUG)
retval = pcib_hotplug_present(sc);
+device_printf(sc->dev, "(2) retval == %d\n", retval);
return (retval);
#else
return (bus_child_present(dev));
And this is what dmesg shows re: pcib10 and friends:
...
pcib9: <Intel Volume Management Device> mem
0x3800fc000000-0x3800fdffffff,0xf8000000-0xf9ffffff,0x3800fff00000-0x3800ffffffff
at device 5.5 numa-domain 0 on pci8
pci9: <PCI bus> numa-domain 0 on pcib9
pcib10: <PCI-PCI bridge> irq 0 at device 2.0 numa-domain 0 on pci9
pcib10: failed to allocate initial I/O port window: 0-0xafff
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib11: <PCI-PCI bridge> irq 0 at device 3.0 numa-domain 0 on pci9
pcib11: failed to allocate initial I/O port window: 0-0xbfff
pcib11: (2) PCIEM_SLOT_STA_PDS
pcib11: (2) PCIEM_SLOT_STA_PDS
pci8: <dasp, performance counters> at device 18.0 (no driver attached)
pci8: <dasp, performance counters> at device 18.1 (no driver attached)
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
atrtc0: <AT realtime clock> at port 0x70 irq 8 on isa0
atrtc0: Warning: Couldn't map I/O.
atrtc0: registered as a time-of-day clock, resolution 1.000000s
atrtc0: Can't map interrupt.
atrtc0: non-PNP ISA device will be removed from GENERIC in FreeBSD 15.
....
hwpstate_intel19: <Intel Speed Shift> numa-domain 0 on cpu19
cpufreq19: <CPU frequency control> numa-domain 0 on cpu19
pcib10: Power Fault Detected
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
pci10: <PCI bus> numa-domain 0 on pcib10
nvme0: <Generic NVMe Device> irq 0 at device 0.0 numa-domain 0 on pci10
hdacc0: <Realtek ALC255 HDA CODEC> at cad 0 on hdac0
hdaa0: <Realtek ALC255 Audio Function Group> at nid 1 on hdacc0
pcm0: <Realtek ALC255 (Analog 2.0+HP/2.0)> at nid 20,27 and 26 on hdaa0
pcm1: <Realtek ALC255 (Analog)> at nid 33 and 25 on hdaa0
hdacc1: <NVIDIA (0x0080) HDA CODEC> at cad 0 on hdac1
hdaa1: <NVIDIA (0x0080) Audio Function Group> at nid 1 on hdacc1
pcm2: <NVIDIA (0x0080) (HDMI/DP 8ch)> at nid 4 on hdaa1
pcm3: <NVIDIA (0x0080) (HDMI/DP 8ch)> at nid 5 on hdaa1
pcm4: <NVIDIA (0x0080) (HDMI/DP 8ch)> at nid 6 on hdaa1
pcm5: <NVIDIA (0x0080) (HDMI/DP 8ch)> at nid 7 on hdaa1
pcib10: Power Fault Detected
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: Power Fault Detected
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
Timecounter "TSC-low" frequency 1655996686 Hz quality 1000
Timecounters tick every 1.000 msec
ZFS filesystem version: 5
ZFS storage pool version: features support (5000)
ugen0.1: <Intel XHCI root HUB> at usbus0
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
uhub0 numa-domain 0 on usbus0
uhub0: <Intel XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
nda0 at nvme0 bus 0 scbus9 target 0 lun 1
nda0: <KXG50ZNV512G NVMe TOSHIBA 512GB AADA4105 78MS1223T8HQ>
nda0: Serial Number 78Mpcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
pcib10: (3) PCIEM_SLOT_STA_PFD
S1223T8HQ
nda0: nvme version 1.2
nda0: 488386MB (1000215216 512 byte sectors)
ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
ada0: <ST3000DM008-2DM166 CC26> ACS-2 ATA SATA 3.x device
ada0: Serial Number Z505F4XJ
ada0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 2861588MB (5860533168 512 byte sectors)
ada0: quirks=0x1<4K>
ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
ada1: <ST3000DM008-2DM166 CC26> ACS-2 ATA SATA 3.x device
ada1: Serial Number Z505FXBL
ada1: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 2861588MB (5860533168 512 byte sectors)
ada1: quirks=0x1<4K>
pcib10: (3) PCIEM_SLOT_STA_PFD
ses0 at ahciem0 bus 0 scbus8 target 0 lun 0
ses0: <AHCI SGPIO Enclosure 2.00 0001> SEMB S-E-S 2.00 device
ses0: SEMB SES Device
ses0: ada0,pass0 in 'Slot 00', SATA Slot: scbus0 target 0
ses0: ada1,pass1 in 'Slot 01', SATA Slot: scbus1 target 0
ses0: cd0,pass2 in 'Slot 07', SATA Slot: scbus7 target 0
cd0 at ahcich7 bus 0 scbus7 target 0 lun 0
cd0: <HL-DT-ST DVD+-RW GHB0N A1C0> Removable CD-ROM SCSI device
cd0: Serial Number KEDI66E2431
cd0: 150.000MB/s transfers (SATA 1.x, UDMA5, ATAPI 12bytes, PIO 8192bytes)
cd0: 0MB (1 0 byte sectors)
Trying to mount root from zfs:zroot/ROOT/default []...
....
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