From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Add a new helper wa_write_no_verify for Wa_1604278689:icl,ehl which is
a write only register. This allows the mask to correctly reflect what
bits the workaround writes versus which bits it will verify during read-
back. In turn this will allow more safety checks to be added in a
following patch.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_workarounds.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 07579bb9b6a7..cd84c2a86787 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -186,6 +186,12 @@ wa_write(struct i915_wa_list *wal, i915_reg_t reg, u32 set)
wa_write_clr_set(wal, reg, ~0, set);
}
+static void
+wa_write_no_verify(struct i915_wa_list *wal, i915_reg_t reg, u32 set)
+{
+ wa_add(wal, reg, ~0, set, 0);
+}
+
static void
wa_write_or(struct i915_wa_list *wal, i915_reg_t reg, u32 set)
{
@@ -616,9 +622,7 @@ static void icl_ctx_workarounds_init(struct intel_engine_cs *engine,
/* Wa_1604278689:icl,ehl */
wa_write(wal, IVB_FBC_RT_BASE, 0xFFFFFFFF & ~ILK_FBC_RT_VALID);
- wa_write_clr_set(wal, IVB_FBC_RT_BASE_UPPER,
- 0, /* write-only register; skip validation */
- 0xFFFFFFFF);
+ wa_write_no_verify(wal, IVB_FBC_RT_BASE_UPPER, 0xFFFFFFFF);
/* Wa_1406306137:icl,ehl */
wa_masked_en(wal, GEN9_ROW_CHICKEN4, GEN11_DIS_PICK_2ND_EU);
--
2.30.2
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