This workaround applies to all steppings of Xe_LPM+. Implement the KMD
part.
Signed-off-by: Gustavo Sousa <gustavo.sousa@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_engine_regs.h | 3 +++
drivers/gpu/drm/i915/gt/intel_workarounds.c | 14 ++++++++++++++
2 files changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_regs.h b/drivers/gpu/drm/i915/gt/intel_engine_regs.h
index c0c8c12edea1..7060ce4fe058 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_regs.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_regs.h
@@ -260,6 +260,9 @@
#define VDBOX_CGCTL3F10(base) _MMIO((base) + 0x3f10)
#define IECPUNIT_CLKGATE_DIS REG_BIT(22)
+#define VDBOX_CGCTL3F1C(base) _MMIO((base) + 0x3f1c)
+#define MFXPIPE_CLKGATE_DIS REG_BIT(3)
+
#define VDBOX_CGCTL3F18(base) _MMIO((base) + 0x3f18)
#define ALNUNIT_CLKGATE_DIS REG_BIT(13)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 12859b8d2092..63205edfea50 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -1662,9 +1662,23 @@ xelpg_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
debug_dump_steering(gt);
}
+static void
+wa_16021867713(struct intel_gt *gt, struct i915_wa_list *wal)
+{
+ struct intel_engine_cs *engine;
+ int id;
+
+ for_each_engine(engine, gt, id)
+ if (engine->class == VIDEO_DECODE_CLASS)
+ wa_write_or(wal, VDBOX_CGCTL3F1C(engine->mmio_base),
+ MFXPIPE_CLKGATE_DIS);
+}
+
static void
xelpmp_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
{
+ wa_16021867713(gt, wal);
+
/*
* Wa_14018778641
* Wa_18018781329
--
2.42.0
