[Intel-gfx] [PATCH 5/5] drm/i915: collect more per ring error state

[Ben Widawsky]

On Sun, 30 Oct 2011 20:12:12 +0100
Daniel Vetter <daniel.vetter at ffwll.ch> wrote:

> Based on a patch by Ben Widawsky, but with different colors
> for the bikeshed.
> 
> In contrast to Ben's patch this one doesn't add the fault regs.
> Afaics they're for the optional page fault support which
> - we're not enabling
> - and which seems to be unsupported by the hw team. Recent bspec
>   lacks tons of information about this that the public docs released
>   half a year back still contain.
> 
> Also dump ring HEAD/TAIL registers - I've recently seen a few
> error_state where just guessing these is not good enough.
> 
> v2: Also dump INSTPM for every ring.
> 
> v3: Fix a few really silly goof-ups spotted by Chris Wilson.
> 
> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben at bwidawsk.net>