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Date:      Tue, 1 Dec 2009 15:11:55 -0800 (PST)
From:      Ravi Shankar <ksravi76@yahoo.com>
To:        freebsd-hackers@freebsd.org
Subject:   Regarding enabling IOAPIC on Intel Dual core processor based boards having Broadcom controller
Message-ID:  <734342.41538.qm@web33202.mail.mud.yahoo.com>

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Hi,

 We are using Freebsd6.2 bases OS on our LV 5200 Series Intel Dual Core Xeo=
n bases processor(Wolfdale-DP-ULV). In the carrier board hosting the proces=
sor we have BCM5703 controller.
Currently we are using only one core in 32 bit mode and planning to use dua=
l core where we need to enable IOAPIC. When IOAPIC is not enabled I see the=
 bcm/bge driver is attached to IRQ10 and everything works fine, but when I =
enable IOAPIC I still see the boot msgs show that bge is attached to irq10 =
but the Broadcom controller does not come up. I found interrupt storm on ir=
q17 ( remember without IOAPIC enable there are not IRQ assignments beyond I=
RQ16),looks like the controller is interrupting on 17 while driver waits on=
 10.

  When I stop and loader and assign it manually using config command "set h=
w.pci8.9.INTA.irq=3D=E2=80=9D17=E2=80=9D" , everything works fine. Would be=
 great if some one can throw some light on this IRQ mapping when IOAPIC is =
enabled and possible fix ( Software or BIOS?)

NOTE: Other devices ( Intel controller (em driver)) are working fine only t=
his BCM5703 is having issues with IOAPIC

Thanks,
Ravi=0A=0A=0A      



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