[Intel-gfx] [PATCH 1/3] drm/i915: Capture dmc firmware information before reset

[Chris Wilson]

On Fri, Feb 24, 2017 at 11:05:28AM -0800, Michel Thierry wrote:
> The firmware may change between the hang and cat /sys/class/drm/card0/error
> 
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Signed-off-by: Michel Thierry <michel.thierry at intel.com>

Looks sane...

> ---
>  drivers/gpu/drm/i915/i915_drv.h       |  4 ++++
>  drivers/gpu/drm/i915/i915_gpu_error.c | 22 ++++++++++++++++------
>  2 files changed, 20 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index a74b87b1b5a9..3b0cff05f5f7 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -953,6 +953,10 @@ struct i915_gpu_state {
>  	u32 gab_ctl;
>  	u32 gfx_mode;
>  
> +	/* Firmware load state */
> +	u32 dmc_loaded;

Can dmc_version be zero? i.e. Does !0 => dmc_loaded?

> +	u32 dmc_version;

-- 
Chris Wilson, Intel Open Source Technology Centre