Re: [PATCH] drm/i915/guc: Support GuC SKL v6.1

[Yu Dai <yu.dai@intel.com>]

On 02/25/2016 06:59 AM, Dave Gordon wrote:
> On 24/02/16 16:49, yu.dai@intel.com wrote:
> > From: Alex Dai <yu.dai@intel.com>
> >
> > This version of GuC firmware fixes the engine reset issue where golden
> > context LRC address is treated as page index by mistake. It also fixes
> > the problem that scheduler stops submiting to one engine when the other
> > engine work queue is full.
> >
> > Signed-off-by: Alex Dai <yu.dai@intel.com>
>
> Hi Alex,
>
> I heard a rumour that GuC 6.1 required a change to the driver interface?

Yes, but interface changes are for SLPC and has no impact on submission. 
We will differ the changes to be part of future SLPC patches.

Thanks,
Alex
> If you can confirm that this is not so, then I'm happy with this, so:
>
> Reviewed-by: Dave Gordon <david.s.gordon@intel.com>
>
> Also: GuC 6.1 has no known outstanding bugs to be fixed, so this would
> be a really good time to enable GuC submission by default on machines
> with this firmware installed. So I'm also going to repost the enabling
> patch (which you already R-B'ed) as a reply to this, so they should be
> taken together :)
>
> .Dave.
>
> > ---
> >   drivers/gpu/drm/i915/intel_guc_loader.c | 6 +++---
> >   1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
> > index e0093a9..e329a8a 100644
> > --- a/drivers/gpu/drm/i915/intel_guc_loader.c
> > +++ b/drivers/gpu/drm/i915/intel_guc_loader.c
> > @@ -59,7 +59,7 @@
> >    *
> >    */
> >
> > -#define I915_SKL_GUC_UCODE "i915/skl_guc_ver4.bin"
> > +#define I915_SKL_GUC_UCODE "i915/skl_guc_ver6.bin"
> >   MODULE_FIRMWARE(I915_SKL_GUC_UCODE);
> >
> >   /* User-friendly representation of an enum */
> > @@ -611,8 +611,8 @@ void intel_guc_ucode_init(struct drm_device *dev)
> >   		fw_path = NULL;
> >   	} else if (IS_SKYLAKE(dev)) {
> >   		fw_path = I915_SKL_GUC_UCODE;
> > -		guc_fw->guc_fw_major_wanted = 4;
> > -		guc_fw->guc_fw_minor_wanted = 3;
> > +		guc_fw->guc_fw_major_wanted = 6;
> > +		guc_fw->guc_fw_minor_wanted = 1;
> >   	} else {
> >   		fw_path = "";	/* unknown device */
> >   	}
>
>

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