Date: Tue, 14 Jun 2011 23:52:16 -0400 From: Ansar Mohammed <ansarm@gmail.com> To: freebsd-hackers@freebsd.org Subject: Shooting trouble on a PCI bus hang Message-ID: <BANLkTinGGTpwGdUFSW7jNHmpR8fyYoGd6Q@mail.gmail.com>
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Hello All, I have a system that is intermitently hanging during the initial PCI bus scan during boot. I have turned on verbose logging and I cannot break to debugger as its a hang. Can someone guide me to the relevant code section where PCI bus enumeration occurs so that I may modify the kernel source to output even more debug info. My hang occurs at the end of this partial dmesg output. Thank you! pci0: <PCI bus> on pcib0 pci0: domain=0, physical bus=0 found-> vendor=0x100b, dev=0x0028, revid=0x21 domain=0, bus=0, slot=1, func=0 class=06-00-00, hdrtype=0x00, mfdev=1 cmdreg=0x0005, statreg=0x0220, cachelnsz=8 (dwords) lattimer=0xf8 (7440 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns) map[10]: type I/O Port, range 32, base 0xac1c, size 2, enabled found-> vendor=0x100b, dev=0x0030, revid=0x00 domain=0, bus=0, slot=1, func=1 class=03-00-00, hdrtype=0x00, mfdev=0 cmdreg=0x0003, statreg=0x0220, cachelnsz=8 (dwords) lattimer=0x00 (0 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns) map[10]: type Memory, range 32, base 0x41000000, size 24, enabled map[14]: type Memory, range 32, base 0x40ffc000, size 14, enabled map[18]: type Memory, range 32, base 0x40ff8000, size 14, enabled map[1c]: type Memory, range 32, base 0x40ff4000, size 14, enabled found-> vendor=0x10ec, dev=0x8139, revid=0x10 domain=0, bus=0, slot=14, func=0 class=02-00-00, hdrtype=0x00, mfdev=0 cmdreg=0x0007, statreg=0x0290, cachelnsz=0 (dwords) lattimer=0x40 (1920 ns), mingnt=0x20 (8000 ns), maxlat=0x40 (16000 ns) intpin=a, irq=11 powerspec 2 supports D0 D1 D2 D3 current D0 map[10]: type I/O Port, range 32, base 0xef00, size 8, enabled map[14]: type Memory, range 32, base 0xeff00000, size 8, enabled $PIR: 0:14 INTA routed to irq 11 found-> vendor=0x1022, dev=0x2090, revid=0x03 domain=0, bus=0, slot=15, func=0 class=06-01-00, hdrtype=0x00, mfdev=1 cmdreg=0x0009, statreg=0x02a0, cachelnsz=8 (dwords) lattimer=0x40 (1920 ns), mingnt=0x00 (0 ns), maxlat=0x00 (0 ns) map[10]: type I/O Port, range 32, base 0x6000, size 3, enabled map[14]: type I/O Port, range 32, base 0x6100, size 8, enabled map[18]: type I/O Port, range 32, base 0x6200, size 6, enabled map[1c]: type I/O Port, range 32, base 0, size 5, enabled map[20]: type I/O Port, range 32, base 0x9d00, size 7, enabled map[24]: type I/O Port, range 32, base 0x9c00, size 6, enabled
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