[Intel-gfx] [PATCH 05/12] drm/i915: Fix DRAM size reporting for BXT

[Chris Wilson]

Quoting Ville Syrjala (2019-02-25 20:29:00)
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> The BXT DUNIT register tells us the size of each DRAM device
> in Gb. We want to report the size of the whole DIMM in GB, so
> that it matches how we report it for non-LP platforms.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> ---
>  drivers/gpu/drm/i915/i915_drv.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index 1f4a966a9727..c40a738dabd3 100644
> --- a/drivers/gpu/drm/i915/i915_drv.c
> +++ b/drivers/gpu/drm/i915/i915_drv.c
> @@ -1322,7 +1322,14 @@ bxt_get_dram_info(struct drm_i915_private *dev_priv)
>                 width = bxt_get_dimm_width(val);
>                 ranks = bxt_get_dimm_ranks(val);
>  
> -               DRM_DEBUG_KMS("CH%d DIMM size: % dGB, width: X%d, ranks:%d\n",
> +               /*
> +                * Size in register is Gb per DRAM device.
> +                * Convert to total GB to match the way
> +                * we report this for non-LP platforms.
> +                */
> +               size = size * ranks * 8 / (width ?: 1);

Should it be /8 for Gbits to GBytes?
-Chris