On Thu, Apr 14, 2016 at 11:14:48AM +0300, Jani Nikula wrote: > On Thu, 14 Apr 2016, Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> wrote: > > On Wed, 13 Apr 2016, Ben Widawsky <ben@xxxxxxxxxxxx> 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 <eero.t.tamminen@xxxxxxxxx> > >> Signed-off-by: Ben Widawsky <ben@xxxxxxxxxxxx> > > > > Please see [1]. > > > > BR, > > Jani. > > > > > > [1] http://patchwork.freedesktop.org/patch/msgid/1460557604-7126-3-git-send-email-mika.kuoppala@xxxxxxxxx > > I did mean to refer to the entire series > > https://patchwork.freedesktop.org/series/5663/ > > My patch is more correct as it does the proper calculation. > > > > > >> --- > >> 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 Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
