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 <clinton.a.taylor@xxxxxxxxx>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Reviewed-by: Ben Widawsky <benjamin.widawsky@xxxxxxxxx>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
---
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)
--
2.13.2
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