RE: Interrupt stom on cardbus device

> -----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