[PATCH 2/7] drm/i915/guc: distinguish HAS_GUC() from HAS_GUC_UCODE/HAS_GUC_SCHED

[Dave Gordon]

For now, anything with a GuC requires uCode loading, and then supports
command submission once loaded. But these are logically distinct from
simply "having a GuC", so we need a separate macro for the latter. Then,
various tests should use this new macro rather than HAS_GUC_UCODE() or
testing enable_guc_submission.

v4:
    Added a couple more uses of the new macro.

Signed-off-by: Dave Gordon <david.s.gordon at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h     | 10 ++++++++--
 drivers/gpu/drm/i915/i915_gem.c     |  2 +-
 drivers/gpu/drm/i915/intel_pm.c     |  2 +-
 drivers/gpu/drm/i915/intel_uncore.c |  2 +-
 4 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index d9d07b7..3b9ee51 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2726,8 +2726,14 @@ struct drm_i915_cmd_table {
 
 #define HAS_CSR(dev)	(IS_GEN9(dev))
 
-#define HAS_GUC_UCODE(dev)	(IS_GEN9(dev) && !IS_KABYLAKE(dev))
-#define HAS_GUC_SCHED(dev)	(IS_GEN9(dev) && !IS_KABYLAKE(dev))
+/*
+ * For now, anything with a GuC requires uCode loading, and then supports
+ * command submission once loaded. But these are logically independent
+ * properties, so we have separate macros to test them.
+ */
+#define HAS_GUC(dev)		(IS_GEN9(dev) && !IS_KABYLAKE(dev))
+#define HAS_GUC_UCODE(dev)	(HAS_GUC(dev))
+#define HAS_GUC_SCHED(dev)	(HAS_GUC(dev))
 
 #define HAS_RESOURCE_STREAMER(dev) (IS_HASWELL(dev) || \
 				    INTEL_INFO(dev)->gen >= 8)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 43e45b7..2a7be71 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -4866,7 +4866,7 @@ int i915_gem_init_engines(struct drm_device *dev)
 	intel_mocs_init_l3cc_table(dev);
 
 	/* We can't enable contexts until all firmware is loaded */
-	if (HAS_GUC_UCODE(dev)) {
+	if (HAS_GUC(dev)) {
 		ret = intel_guc_setup(dev);
 		if (ret) {
 			DRM_ERROR("Failed to initialize GuC, error %d\n", ret);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 1bb0f9a..c584282 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4844,7 +4844,7 @@ static void gen9_enable_rc6(struct drm_i915_private *dev_priv)
 	for_each_engine(engine, dev_priv)
 		I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10);
 
-	if (HAS_GUC_UCODE(dev_priv))
+	if (HAS_GUC(dev_priv))
 		I915_WRITE(GUC_MAX_IDLE_COUNT, 0xA);
 
 	I915_WRITE(GEN6_RC_SLEEP, 0);
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 385114b..c1ca458 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -1715,7 +1715,7 @@ int intel_guc_reset(struct drm_i915_private *dev_priv)
 	int ret;
 	unsigned long irqflags;
 
-	if (!i915.enable_guc_submission)
+	if (!HAS_GUC(dev_priv))
 		return -EINVAL;
 
 	intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
-- 
1.9.1