On Wed, 13 Apr 2016, Ben Widawsky <[email protected]> wrote: > The two behavioral changes here are the correct detection of the eDRAM size on > gen9 (SKL + KBL), and unconditional printing of the eLLC size. > > Cc: Eero Tamminen <[email protected]> > Signed-off-by: Ben Widawsky <[email protected]>
Please see [1]. BR, Jani. [1] http://patchwork.freedesktop.org/patch/msgid/[email protected] > --- > drivers/gpu/drm/i915/intel_uncore.c | 16 +++++++++++++--- > 1 file changed, 13 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_uncore.c > b/drivers/gpu/drm/i915/intel_uncore.c > index fbc1d21..efef724 100644 > --- a/drivers/gpu/drm/i915/intel_uncore.c > +++ b/drivers/gpu/drm/i915/intel_uncore.c > @@ -314,8 +314,17 @@ static void intel_uncore_ellc_detect(struct drm_device > *dev) > { > struct drm_i915_private *dev_priv = dev->dev_private; > > - if ((IS_HASWELL(dev) || IS_BROADWELL(dev) || > - INTEL_INFO(dev)->gen >= 9) && > + if (INTEL_INFO(dev)->gen >= 9 && HAS_LLC(dev)) { > + u32 edramcap = __raw_i915_read32(dev_priv, HSW_EDRAM_PRESENT); > + if (edramcap & EDRAM_ENABLED) { > + int sets = (edramcap >> 8) & 0x3; > + int ways = (edramcap >> 5) & 0x7; > + int banks = (edramcap >> 1) & 0xf; > + > + ways = (ways + 1) * 4; > + dev_priv->ellc_size = sets * ways * banks; > + } > + } else if ((IS_HASWELL(dev) || IS_BROADWELL(dev)) && > (__raw_i915_read32(dev_priv, HSW_EDRAM_PRESENT) & EDRAM_ENABLED)) { > /* The docs do not explain exactly how the calculation can be > * made. It is somewhat guessable, but for now, it's always > @@ -323,8 +332,9 @@ static void intel_uncore_ellc_detect(struct drm_device > *dev) > * NB: We can't write IDICR yet because we do not have gt funcs > * set up */ > dev_priv->ellc_size = 128; > - DRM_INFO("Found %zuMB of eLLC\n", dev_priv->ellc_size); > } > + > + DRM_INFO("Found %zuMB of eLLC\n", dev_priv->ellc_size); > } > > static bool -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
