From 4e34935fcf691b2f553fdc34502d649bf979a06f Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Tue, 15 Aug 2017 16:25:39 -0700 Subject: [PATCH] drm/i915/cnl: Setup PAT Index. Different from previous platforms, on CNL+ there's separated registers for separated indexes. v2: Remove comments regarding uncertainty around the table. v3: Remove extra line (by Ben) Cc: Clint Taylor Cc: Daniele Ceraolo Spurio Signed-off-by: Rodrigo Vivi Reviewed-by: Ben Widawsky Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20170815232539.3562-1-rodrigo.vivi@intel.com --- drivers/gpu/drm/i915/i915_gem_gtt.c | 26 ++++++++++++++++++++++++-- drivers/gpu/drm/i915/i915_reg.h | 1 + 2 files changed, 25 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index ef1881e256f4..d60f38adc4c4 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -2742,6 +2742,24 @@ static int ggtt_probe_common(struct i915_ggtt *ggtt, u64 size) return 0; } +static void cnl_setup_private_ppat(struct drm_i915_private *dev_priv) +{ + /* XXX: spec is unclear if this is still needed for CNL+ */ + if (!USES_PPGTT(dev_priv)) { + I915_WRITE(GEN10_PAT_INDEX(0), GEN8_PPAT_UC); + return; + } + + I915_WRITE(GEN10_PAT_INDEX(0), GEN8_PPAT_WB | GEN8_PPAT_LLC); + I915_WRITE(GEN10_PAT_INDEX(1), GEN8_PPAT_WC | GEN8_PPAT_LLCELLC); + I915_WRITE(GEN10_PAT_INDEX(2), GEN8_PPAT_WT | GEN8_PPAT_LLCELLC); + I915_WRITE(GEN10_PAT_INDEX(3), GEN8_PPAT_UC); + I915_WRITE(GEN10_PAT_INDEX(4), GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(0)); + I915_WRITE(GEN10_PAT_INDEX(5), GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(1)); + I915_WRITE(GEN10_PAT_INDEX(6), GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2)); + I915_WRITE(GEN10_PAT_INDEX(7), GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3)); +} + /* The GGTT and PPGTT need a private PPAT setup in order to handle cacheability * bits. When using advanced contexts each context stores its own PAT, but * writing this data shouldn't be harmful even in those cases. */ @@ -2856,7 +2874,9 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt) ggtt->base.total = (size / sizeof(gen8_pte_t)) << PAGE_SHIFT; - if (IS_CHERRYVIEW(dev_priv) || IS_GEN9_LP(dev_priv)) + if (INTEL_GEN(dev_priv) >= 10) + cnl_setup_private_ppat(dev_priv); + else if (IS_CHERRYVIEW(dev_priv) || IS_GEN9_LP(dev_priv)) chv_setup_private_ppat(dev_priv); else bdw_setup_private_ppat(dev_priv); @@ -3138,7 +3158,9 @@ void i915_gem_restore_gtt_mappings(struct drm_i915_private *dev_priv) ggtt->base.closed = false; if (INTEL_GEN(dev_priv) >= 8) { - if (IS_CHERRYVIEW(dev_priv) || IS_GEN9_LP(dev_priv)) + if (INTEL_GEN(dev_priv) >= 10) + cnl_setup_private_ppat(dev_priv); + else if (IS_CHERRYVIEW(dev_priv) || IS_GEN9_LP(dev_priv)) chv_setup_private_ppat(dev_priv); else bdw_setup_private_ppat(dev_priv); diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index b2d785969d17..ed7cd9ee2c2a 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2336,6 +2336,7 @@ enum i915_power_well_id { #define DONE_REG _MMIO(0x40b0) #define GEN8_PRIVATE_PAT_LO _MMIO(0x40e0) #define GEN8_PRIVATE_PAT_HI _MMIO(0x40e0 + 4) +#define GEN10_PAT_INDEX(index) _MMIO(0x40e0 + index*4) #define BSD_HWS_PGA_GEN7 _MMIO(0x04180) #define BLT_HWS_PGA_GEN7 _MMIO(0x04280) #define VEBOX_HWS_PGA_GEN7 _MMIO(0x04380) -- 2.20.1