Re: [PATCH 0/9] HW contest support for Ironlake

[Ben Widawsky <ben@bwidawsk.net>]

Why do I always forget this...?

You guys can easily clone the kernel sources here for easier testing:

http://cgit.freedesktop.org/~bwidawsk/drm-intel/log/?h=ilk_contexts

On Sun, Jul 14, 2013 at 09:22:44AM -0700, Ben Widawsky wrote:
> By the request of Ken, and Chris, I've added support for HW contexts to
> Ironlake. This is not the first time I've done this, but I think I'll
> skip the somewhat ugly history on the matter.
> 
> Our existing support for Ironlake sets up 2 contexts, the powerctx, and
> the renderctx. The former is stored in special memory on GEN6+, and the
> latter is *extremely* similar to the way we use default context on GEN6+
> (ie. if users don't opt in to contexts, they are using it even if they
> don't realize).
> 
> The patch series first tries to tie that renderctx into our existing
> i915 context code, and then rips out the old renderctx. Powerctx is left
> alone since it still really is a special case.
> 
> Finally, in the series I reenable rc6 on ILK. I've never had an issue
> with this on my ILK, but I recommend anyone testing on it who sees
> issues to try to disable it via modparam firstly.
> 
> The patch series is minimally tested. I told Chris and Ken at the
> offset, they'd need to do the heavy lifting on the testing front.
> 
> Ben Widawsky (9):
>   drm/i915: move ilk rc6 context setup
>   drm/i915: Convert renderctx to a regular context
>   drm/i915: Make ILK context objects more like others
>   drm/i915: Add gen5 support to mi_set_context
>   drm/i915: Use do_switch for ILK renderctx
>   drm/i915: HW contexts for ILK
>   drm/i915: Use only the default context for ILK
>   drm/i915: Restore ILK powerctx pin attributes
>   drm/i915: Re-enable rc6 on ILK (again^5)
> 
>  drivers/gpu/drm/i915/i915_debugfs.c     |  6 ----
>  drivers/gpu/drm/i915/i915_drv.h         |  3 +-
>  drivers/gpu/drm/i915/i915_gem_context.c | 28 ++++++++++++++---
>  drivers/gpu/drm/i915/i915_reg.h         |  1 +
>  drivers/gpu/drm/i915/intel_pm.c         | 56 ---------------------------------
>  5 files changed, 25 insertions(+), 69 deletions(-)
> 
> -- 
> 1.8.3.2
> 

-- 
Ben Widawsky, Intel Open Source Technology Center