On 04/10/2012 10:58 AM, Daniel Vetter wrote: > On Tue, Apr 10, 2012 at 10:47:49AM +0200, Jiri Slaby wrote: >> On 04/09/2012 07:11 PM, Jesse Barnes wrote: >>> On Fri, 30 Mar 2012 11:45:43 +0100 Chris Wilson >>> <chris@xxxxxxxxxxxxxxxxxx> wrote: >>> >>>> On Fri, 30 Mar 2012 11:59:28 +0200, Jiri Slaby <jslaby@xxxxxxx> >>>> wrote: >>>>> I don't know what to dump more, because iir is obviously zero >>>>> too. What other sources of interrupts are on the (G33) chip? >>>> >>>> IIR is the master interrupt, with chained secondary interrupt >>>> statuses. If IIR is 0, the interrupt wasn't raised by the GPU. >>> >>> I've actually seen cases where one of the PIPE*STAT regs is stuck, >>> and even if IIR is 0 we still get interrupts... Jiri can you verify >>> the PIPE*STAT regs have bits set, maybe one or more we don't check >>> for? >> >> Note that I already attached their contents... This is what is in them >> (pipes 0 and 1): >> [ 3572.968581] i915_driver_irq_handler: 0=00000000 1=00000000 >> [ 3572.977472] i915_driver_irq_handler: 0=00000000 1=00000000 >> [ 3576.224839] i915_driver_irq_handler: 0=00000000 1=00000000 >> [ 3576.243558] i915_driver_irq_handler: 0=00000000 1=00000000 >> [ 3576.384912] i915_driver_irq_handler: 0=00000000 1=00000000 >> [ 3576.403462] i915_driver_irq_handler: 0=00000000 1=00000000 >> [ 3577.464100] i915_driver_irq_handler: 0=00000000 1=00000000 >> [ 3577.477383] i915_driver_irq_handler: 0=00000000 1=00000000 >> [ 3577.829016] i915_driver_irq_handler: 0=00020000 1=00000000 >> [ 3577.830093] i915_driver_irq_handler: 0=00020000 1=00000000 >> >> I.e. the handler is called when IIR=0 and both pipe stats are 0. > > Hm, can you also dump the PORT_HOTPLUG_STAT register? That's the only > other subordinate interrupt source left. It's always 0x300: i915_driver_irq_handler: HP=00000300 0=00000000 1=00000000 i915_driver_irq_handler: HP=00000300 0=00000000 1=00000000 i915_driver_irq_handler: HP=00000300 0=00000000 1=00000000 i915_driver_irq_handler: HP=00000300 0=00000000 1=00000000 i915_driver_irq_handler: HP=00000300 0=00000000 1=00000000 i915_driver_irq_handler: HP=00000300 0=00000000 1=00000000 i915_driver_irq_handler: HP=00000300 0=00000000 1=00000000 i915_driver_irq_handler: HP=00000300 0=00000000 1=00000000 thanks, -- js suse labs _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
