On Thu, Jul 25, 2013 at 9:50 AM, Egbert Eich <eich@xxxxxxxx> wrote: > > I applied this patch (but not the one you sent on Monday), recompiled > > and logged: > > uncompressed (8,2M) http://files.hz6.de/kern_20130724.log > > bz2 (288 KB) http://files.hz6.de/kern_20130724.log.bz2 > > These logs show clearly that we are seeing interrupts which > should be disabled. > Could it be that we we have either the status or enable bits > mixed up? Unfortunately the publically available docs for GEN4 > don't show the HOTPLUG_EN and HOTPLUG_STAT registers. > > Daniel, could you please help me out here? I've checked the docs again for gm45 and we seem to have the right values. But on early gen4 (i.e. i965g/gm) the Bspec has been wrong about these, so I wouldn't be surprised at all if they're wrong for the digital ports on gm45, too. Iirc we've already had a case like that, but there was no real conclusion (and atm I can't find the bug). Can you pls try the below patch (on top of Egbert's debug stuff)? diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 6caa748..2d4c884 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -1925,9 +1925,9 @@ #define PORT_HOTPLUG_STAT (dev_priv->info->display_mmio_offset + 0x61114) /* HDMI/DP bits are gen4+ */ -#define PORTB_HOTPLUG_LIVE_STATUS (1 << 29) +#define PORTD_HOTPLUG_LIVE_STATUS (1 << 29) #define PORTC_HOTPLUG_LIVE_STATUS (1 << 28) -#define PORTD_HOTPLUG_LIVE_STATUS (1 << 27) +#define PORTB_HOTPLUG_LIVE_STATUS (1 << 27) #define PORTD_HOTPLUG_INT_STATUS (3 << 21) #define PORTC_HOTPLUG_INT_STATUS (3 << 19) #define PORTB_HOTPLUG_INT_STATUS (3 << 17) Egbert I think your debug patch has fairly useful information for debugging the storm code in general, can you please submit a patch against drm-intel-nightly? Thanks, Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
