Interrupt stom on cardbus device
Nasonov Sergey
SNasonov at BCC.RU
Sat Feb 28 10:40:15 PST 2009
> -----Original Message-----
> From: Robert Noland [mailto:rnoland at FreeBSD.org]
> Sent: Saturday, February 28, 2009 8:50 PM
> To: Nasonov Sergey
> Cc: freebsd-current at freebsd.org
> Subject: RE: Interrupt stom on cardbus device
>
> On Sat, 2009-02-28 at 20:38 +0300, Nasonov Sergey wrote:
> > > Hrm, the intel driver is very noisy. If the problem really is
INTx,
> > > then the drm debugging won't know anything about that. Could you
try
> > > that patch that I posted later, without this patch to i915. I've
> > looked
> > > over the linux pci code and they do disable INTx when enabling
MSI.
> > >
> > > I stuck the patch up as
> > > http://people.freebsd.org/~rnoland/pci_disable_intx.patch
> >
> > Great! After applying this patch the problem was resolved. Switch to
VT
> > an then back to X11 now work fine. Thanks!
>
> Can you confirm that:
>
> 1. Interrupts are still working (the msi ones)
Yes, there is pciconf output:
> vmstat -i
interrupt total rate
irq1: atkbd0 1838 1
irq9: acpi0 2117 1
irq12: psm0 74850 58
irq14: ata0 10143 7
irq16: cbb0 uhci2+ 34852 27
irq19: ehci1 2 0
irq20: uhci0 13 0
irq22: ehci0 2 0
cpu0: timer 2570905 1999
irq256: em0 19 0
irq257: hdac0 28 0
cpu1: timer 2569860 1998
irq258: vgapci0 2523 1
Total 5267152 4095
and pciconf -lvc:
vgapci0 at pci0:0:2:0: class=0x030000 card=0x20b517aa chip=0x2a028086
rev=0x0c hdr=0x00
vendor = 'Intel Corporation'
device = 'Mobile 965 Express Integrated Graphics Controller'
class = display
subclass = VGA
cap 05[90] = MSI supports 1 message
cap 01[d0] = powerspec 3 supports D0 D3 current D0
And from console (output after start X server):
drm0: <Intel i965GM> on vgapci0
[drm:pid1408:drm_attach] MSI count = 1
info: [drm] MSI enabled 1 message(s)
[drm:pid1408:drm_load]
[drm:pid1408:drm_addmap] offset = 0xf8100000, size = 0x00100000, type =
1
[drm:pid1408:drm_addmap] Added map 1 0xf8100000/0x100000
[drm:pid1408:i915_init_phys_hws] Enabled hardware status page
[drm:pid1408:drm_vblank_init]
vgapci0: child drm0 requested pci_enable_busmaster
[drm:pid1408:drm_agp_init] agp_available = 1
info: [drm] AGP at 0xe0000000 256MB
[drm:pid1408:drm_ctxbitmap_next] drm_ctxbitmap_next bit : 0
[drm:pid1408:drm_ctxbitmap_init] drm_ctxbitmap_init : 0
info: [drm] Initialized i915 1.6.0 20080730
> 2. Interrupts are still working for other devices on the shared INTx
Hmm, How to determine which device need to be checked?
Em0, hdac0 and ubsa0 modem work fine.
>
> robert.
>
> > Sergey.
> >
> >
> > >
> > > robert.
> > >
> > > Robert Noland <rnoland at FreeBSD.org>
> > > FreeBSD
> > _______________________________________________
> > freebsd-current at freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-current
> > To unsubscribe, send any mail to "freebsd-current-
> unsubscribe at freebsd.org"
> --
> Robert Noland <rnoland at FreeBSD.org>
> FreeBSD
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