From b41e63d88193babb6508a0d27bc4603ad9336ab1 Mon Sep 17 00:00:00 2001
From: Michel Thierry <michel.thierry@intel.com>
Date: Sat, 17 Aug 2019 02:38:54 -0700
Subject: drm/i915/tgl: Updated Private PAT programming
Git-commit: b41e63d88193babb6508a0d27bc4603ad9336ab1
Patch-mainline: v5.4-rc1
References: bsc#1152489
Gen12 removes the target-cache and age fields from the private PAT
because MOCS now have the capability to set these itself. Only memory-type
field should be programmed in the ppat, the reminded bits are reserved.
Since now there are only 4 possible combinations, we could set only 4
PPAT and leave the reminded 4 as UC, but I left them as WB as we used
to have before.
Also these registers have been relocated to the 0x4800-0x481c range.
HSDES: 1406402661
BSpec: 31654
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190817093902.2171-33-lucas.demarchi@intel.com
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/i915/i915_gem_gtt.c | 17 ++++++++++++++++-
drivers/gpu/drm/i915/i915_reg.h | 1 +
2 files changed, 17 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -3031,6 +3031,19 @@ static unsigned int chv_private_pat_matc
INTEL_PPAT_PERFECT_MATCH : 0;
}
+static void tgl_setup_private_ppat(struct drm_i915_private *dev_priv)
+{
+ /* TGL doesn't support LLC or AGE settings */
+ I915_WRITE(GEN12_PAT_INDEX(0), GEN8_PPAT_WB);
+ I915_WRITE(GEN12_PAT_INDEX(1), GEN8_PPAT_WC);
+ I915_WRITE(GEN12_PAT_INDEX(2), GEN8_PPAT_WT);
+ I915_WRITE(GEN12_PAT_INDEX(3), GEN8_PPAT_UC);
+ I915_WRITE(GEN12_PAT_INDEX(4), GEN8_PPAT_WB);
+ I915_WRITE(GEN12_PAT_INDEX(5), GEN8_PPAT_WB);
+ I915_WRITE(GEN12_PAT_INDEX(6), GEN8_PPAT_WB);
+ I915_WRITE(GEN12_PAT_INDEX(7), GEN8_PPAT_WB);
+}
+
static void cnl_setup_private_ppat(struct intel_ppat *ppat)
{
ppat->max_entries = 8;
@@ -3137,7 +3150,9 @@ static void setup_private_pat(struct drm
ppat->i915 = dev_priv;
- if (INTEL_GEN(dev_priv) >= 10)
+ if (INTEL_GEN(dev_priv) >= 12)
+ tgl_setup_private_ppat(dev_priv);
+ else if (INTEL_GEN(dev_priv) >= 10)
cnl_setup_private_ppat(ppat);
else if (IS_CHERRYVIEW(dev_priv) || IS_GEN9_LP(dev_priv))
chv_setup_private_ppat(ppat);
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2456,6 +2456,7 @@ static inline bool i915_mmio_reg_valid(i
#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 GEN12_PAT_INDEX(index) _MMIO(0x4800 + (index) * 4)
#define BSD_HWS_PGA_GEN7 _MMIO(0x04180)
#define BLT_HWS_PGA_GEN7 _MMIO(0x04280)
#define VEBOX_HWS_PGA_GEN7 _MMIO(0x04380)