[Intel-gfx] [RFC PATCH 11/11] drm/i915: Remove Gen9 WAs with no effect

[Oscar Mateo]

GEN8_CONFIG0 (0xD00) is a protected by a lock (bit 31) which is set by
the BIOS, so there is no way we can enable the three chicken bits
mandated by the WA (the BIOS should be doing it instead).

Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h         | 3 ---
 drivers/gpu/drm/i915/i915_workarounds.c | 2 --
 2 files changed, 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 6b46393..a78dea6 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -355,9 +355,6 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
 #define   ECOCHK_PPGTT_WT_HSW		(0x2<<3)
 #define   ECOCHK_PPGTT_WB_HSW		(0x3<<3)
 
-#define GEN8_CONFIG0			_MMIO(0xD00)
-#define  GEN9_DEFAULT_FIXES		(1 << 3 | 1 << 2 | 1 << 1)
-
 #define GAC_ECO_BITS			_MMIO(0x14090)
 #define   ECOBITS_SNB_BIT		(1<<13)
 #define   ECOBITS_PPGTT_CACHE64B	(3<<8)
diff --git a/drivers/gpu/drm/i915/i915_workarounds.c b/drivers/gpu/drm/i915/i915_workarounds.c
index 9a32601..6f10e04 100644
--- a/drivers/gpu/drm/i915/i915_workarounds.c
+++ b/drivers/gpu/drm/i915/i915_workarounds.c
@@ -608,8 +608,6 @@ static int gen9_mmio_workarounds_init(struct drm_i915_private *dev_priv)
 	/* See Bspec note for PSR2_CTL bit 31, Wa#828:skl,bxt,kbl,cfl */
 	MMIOWA_SET_BIT(CHICKEN_PAR1_1, SKL_EDP_PSR_FIX_RDWRAP);
 
-	MMIOWA_SET_BIT(GEN8_CONFIG0, GEN9_DEFAULT_FIXES);
-
 	/* WaEnableChickenDCPR:skl,bxt,kbl,glk,cfl */
 	MMIOWA_SET_BIT(GEN8_CHICKEN_DCPR_1, MASK_WAKEMEM);
 
-- 
1.9.1