Add macros to check for slpc support. This feature is currently supported
for gen12+ and enabled whenever guc submission is enabled/selected.

Signed-off-by: Vinay Belgaumkar <vinay.belgaum...@intel.com>
Signed-off-by: Sundaresan Sujaritha <sujaritha.sundare...@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospu...@intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_guc.c        |  1 +
 drivers/gpu/drm/i915/gt/uc/intel_guc.h        |  2 ++
 .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 21 +++++++++++++++++++
 .../gpu/drm/i915/gt/uc/intel_guc_submission.h | 16 ++++++++++++++
 drivers/gpu/drm/i915/gt/uc/intel_uc.c         |  6 ++++--
 drivers/gpu/drm/i915/gt/uc/intel_uc.h         |  1 +
 6 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c 
b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
index 979128e28372..b9a809f2d221 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
@@ -157,6 +157,7 @@ void intel_guc_init_early(struct intel_guc *guc)
        intel_guc_ct_init_early(&guc->ct);
        intel_guc_log_init_early(&guc->log);
        intel_guc_submission_init_early(guc);
+       intel_guc_slpc_init_early(guc);
 
        mutex_init(&guc->send_mutex);
        spin_lock_init(&guc->irq_lock);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h 
b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
index 5d94cf482516..e5a456918b88 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
@@ -57,6 +57,8 @@ struct intel_guc {
 
        bool submission_supported;
        bool submission_selected;
+       bool slpc_supported;
+       bool slpc_selected;
 
        struct i915_vma *ads_vma;
        struct __guc_ads_blob *ads_blob;
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c 
b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 9c102bf0c8e3..e2644a05f298 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -2351,6 +2351,27 @@ void intel_guc_submission_init_early(struct intel_guc 
*guc)
        guc->submission_selected = __guc_submission_selected(guc);
 }
 
+static bool __guc_slpc_supported(struct intel_guc *guc)
+{
+       /* GuC slpc is unavailable for pre-Gen12 */
+       return guc->submission_supported &&
+               GRAPHICS_VER(guc_to_gt(guc)->i915) >= 12;
+}
+
+static bool __guc_slpc_selected(struct intel_guc *guc)
+{
+       if (!intel_guc_slpc_is_supported(guc))
+               return false;
+
+       return guc->submission_selected;
+}
+
+void intel_guc_slpc_init_early(struct intel_guc *guc)
+{
+       guc->slpc_supported = __guc_slpc_supported(guc);
+       guc->slpc_selected = __guc_slpc_selected(guc);
+}
+
 static inline struct intel_context *
 g2h_context_lookup(struct intel_guc *guc, u32 desc_idx)
 {
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h 
b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h
index be767eb6ff71..7ae5fd052faf 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h
@@ -13,6 +13,7 @@
 struct drm_printer;
 struct intel_engine_cs;
 
+void intel_guc_slpc_init_early(struct intel_guc *guc);
 void intel_guc_submission_init_early(struct intel_guc *guc);
 int intel_guc_submission_init(struct intel_guc *guc);
 void intel_guc_submission_enable(struct intel_guc *guc);
@@ -50,4 +51,19 @@ static inline bool intel_guc_submission_is_used(struct 
intel_guc *guc)
        return intel_guc_is_used(guc) && intel_guc_submission_is_wanted(guc);
 }
 
+static inline bool intel_guc_slpc_is_supported(struct intel_guc *guc)
+{
+       return guc->slpc_supported;
+}
+
+static inline bool intel_guc_slpc_is_wanted(struct intel_guc *guc)
+{
+       return guc->slpc_selected;
+}
+
+static inline bool intel_guc_slpc_is_used(struct intel_guc *guc)
+{
+       return intel_guc_submission_is_used(guc) && 
intel_guc_slpc_is_wanted(guc);
+}
+
 #endif
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c 
b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index 61be0aa81492..dca5f6d0641b 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -76,16 +76,18 @@ static void __confirm_options(struct intel_uc *uc)
        struct drm_i915_private *i915 = uc_to_gt(uc)->i915;
 
        drm_dbg(&i915->drm,
-               "enable_guc=%d (guc:%s submission:%s huc:%s)\n",
+               "enable_guc=%d (guc:%s submission:%s huc:%s slpc:%s)\n",
                i915->params.enable_guc,
                yesno(intel_uc_wants_guc(uc)),
                yesno(intel_uc_wants_guc_submission(uc)),
-               yesno(intel_uc_wants_huc(uc)));
+               yesno(intel_uc_wants_huc(uc)),
+               yesno(intel_uc_wants_guc_slpc(uc)));
 
        if (i915->params.enable_guc == 0) {
                GEM_BUG_ON(intel_uc_wants_guc(uc));
                GEM_BUG_ON(intel_uc_wants_guc_submission(uc));
                GEM_BUG_ON(intel_uc_wants_huc(uc));
+               GEM_BUG_ON(intel_uc_wants_guc_slpc(uc));
                return;
        }
 
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.h 
b/drivers/gpu/drm/i915/gt/uc/intel_uc.h
index e2da2b6e76e1..38e465fd8a0c 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.h
@@ -83,6 +83,7 @@ __uc_state_checker(x, func, uses, used)
 uc_state_checkers(guc, guc);
 uc_state_checkers(huc, huc);
 uc_state_checkers(guc, guc_submission);
+uc_state_checkers(guc, guc_slpc);
 
 #undef uc_state_checkers
 #undef __uc_state_checker
-- 
2.25.0

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