On 4/5/2018 7:00 AM, Mika Kuoppala wrote:
From: Michel Thierry <michel.thierry@xxxxxxxxx>
The bits used to reset the different engines/domains have changed in
GEN11, this patch maps the reset engine mask bits with the new bits
in the reset control register.
v2: Use shift-left instead of BIT macro to match the file style (Paulo).
v3: Reuse gen8_reset_engines (Daniele).
v4: Do not call intel_uncore_forcewake_reset after reset, we may be
using the forcewake to read protected registers elsewhere and those
results may be clobbered by the concurrent dropping of forcewake.
bspec: 19212
Cc: Oscar Mateo <oscar.mateo@xxxxxxxxx>
Cc: Antonio Argenziano <antonio.argenziano@xxxxxxxxx>
Cc: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Acked-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Signed-off-by: Michel Thierry <michel.thierry@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 11 ++++++++
drivers/gpu/drm/i915/intel_uncore.c | 53 +++++++++++++++++++++++++++++++++++--
2 files changed, 62 insertions(+), 2 deletions(-)
Knowing what I know about patches that are still in the pipeline (that
justify why we don't reuse gen6_reset_engines), this is:
Reviewed-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 176dca6554f4..b2a2d8fbbc68 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -301,6 +301,17 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
#define GEN6_GRDOM_VECS (1 << 4)
#define GEN9_GRDOM_GUC (1 << 5)
#define GEN8_GRDOM_MEDIA2 (1 << 7)
+/* GEN11 changed all bit defs except for FULL & RENDER */
+#define GEN11_GRDOM_FULL GEN6_GRDOM_FULL
+#define GEN11_GRDOM_RENDER GEN6_GRDOM_RENDER
+#define GEN11_GRDOM_BLT (1 << 2)
+#define GEN11_GRDOM_GUC (1 << 3)
+#define GEN11_GRDOM_MEDIA (1 << 5)
+#define GEN11_GRDOM_MEDIA2 (1 << 6)
+#define GEN11_GRDOM_MEDIA3 (1 << 7)
+#define GEN11_GRDOM_MEDIA4 (1 << 8)
+#define GEN11_GRDOM_VECS (1 << 13)
+#define GEN11_GRDOM_VECS2 (1 << 14)
#define RING_PP_DIR_BASE(engine) _MMIO((engine)->mmio_base+0x228)
#define RING_PP_DIR_BASE_READ(engine) _MMIO((engine)->mmio_base+0x518)
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index e7540bb9786c..d6e20f0f4c28 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -1909,6 +1909,50 @@ static int gen6_reset_engines(struct drm_i915_private *dev_priv,
return gen6_hw_domain_reset(dev_priv, hw_mask);
}
+/**
+ * gen11_reset_engines - reset individual engines
+ * @dev_priv: i915 device
+ * @engine_mask: mask of intel_ring_flag() engines or ALL_ENGINES for full reset
+ *
+ * This function will reset the individual engines that are set in engine_mask.
+ * If you provide ALL_ENGINES as mask, full global domain reset will be issued.
+ *
+ * Note: It is responsibility of the caller to handle the difference between
+ * asking full domain reset versus reset for all available individual engines.
+ *
+ * Returns 0 on success, nonzero on error.
+ */
+static int gen11_reset_engines(struct drm_i915_private *dev_priv,
+ unsigned engine_mask)
+{
+ struct intel_engine_cs *engine;
+ const u32 hw_engine_mask[I915_NUM_ENGINES] = {
+ [RCS] = GEN11_GRDOM_RENDER,
+ [BCS] = GEN11_GRDOM_BLT,
+ [VCS] = GEN11_GRDOM_MEDIA,
+ [VCS2] = GEN11_GRDOM_MEDIA2,
+ [VCS3] = GEN11_GRDOM_MEDIA3,
+ [VCS4] = GEN11_GRDOM_MEDIA4,
+ [VECS] = GEN11_GRDOM_VECS,
+ [VECS2] = GEN11_GRDOM_VECS2,
+ };
+ u32 hw_mask;
+
+ BUILD_BUG_ON(VECS2 + 1 != I915_NUM_ENGINES);
+
+ if (engine_mask == ALL_ENGINES) {
+ hw_mask = GEN11_GRDOM_FULL;
+ } else {
+ unsigned int tmp;
+
+ hw_mask = 0;
+ for_each_engine_masked(engine, dev_priv, engine_mask, tmp)
+ hw_mask |= hw_engine_mask[engine->id];
+ }
+
+ return gen6_hw_domain_reset(dev_priv, hw_mask);
+}
+
/**
* __intel_wait_for_register_fw - wait until register matches expected state
* @dev_priv: the i915 device
@@ -2057,7 +2101,10 @@ static int gen8_reset_engines(struct drm_i915_private *dev_priv,
if (gen8_reset_engine_start(engine))
goto not_ready;
- return gen6_reset_engines(dev_priv, engine_mask);
+ if (INTEL_GEN(dev_priv) >= 11)
+ return gen11_reset_engines(dev_priv, engine_mask);
+ else
+ return gen6_reset_engines(dev_priv, engine_mask);
not_ready:
for_each_engine_masked(engine, dev_priv, engine_mask, tmp)
@@ -2160,12 +2207,14 @@ bool intel_has_reset_engine(struct drm_i915_private *dev_priv)
int intel_reset_guc(struct drm_i915_private *dev_priv)
{
+ u32 guc_domain = INTEL_GEN(dev_priv) >= 11 ? GEN11_GRDOM_GUC :
+ GEN9_GRDOM_GUC;
int ret;
GEM_BUG_ON(!HAS_GUC(dev_priv));
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
- ret = gen6_hw_domain_reset(dev_priv, GEN9_GRDOM_GUC);
+ ret = gen6_hw_domain_reset(dev_priv, guc_domain);
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
return ret;
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