drm/xe/guc: Request max GT freq during resume

We already request max freq in the load path, moving it
to __xe_guc_upload will ensure this speeds up GuC load in
the resume path as well.

v2: Rename xe_guc_pc_init_early since we now call it per
GuC load (Michal W)

v3: Keep pc_init_early() and init RPx values there (Rodrigo)

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240620224928.3986377-3-vinay.belgaumkar@intel.comSigned-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/xe_guc.c

@@ -702,6 +702,9 @@ static int __xe_guc_upload(struct xe_guc *guc)
 {
 	int ret;
 
+	/* Raise GT freq to speed up HuC/GuC load */
+	xe_guc_pc_raise_unslice(&guc->pc);
+
 	guc_write_params(guc);
 	guc_prepare_xfer(guc);
 
@@ -787,7 +790,6 @@ int xe_guc_min_load_for_hwconfig(struct xe_guc *guc)
 
 	xe_guc_ads_populate_minimal(&guc->ads);
 
-	/* Raise GT freq to speed up HuC/GuC load */
 	xe_guc_pc_init_early(&guc->pc);
 
 	ret = __xe_guc_upload(guc);

drivers/gpu/drm/xe/xe_guc_pc.c

@@ -710,17 +710,28 @@ static u32 pc_max_freq_cap(struct xe_guc_pc *pc)
 }
 
 /**
- * xe_guc_pc_init_early - Initialize RPx values and request a higher GT
+ * xe_guc_pc_raise_unslice - Initialize RPx values and request a higher GT
  * frequency to allow faster GuC load times
  * @pc: Xe_GuC_PC instance
  */
+void xe_guc_pc_raise_unslice(struct xe_guc_pc *pc)
+{
+	struct xe_gt *gt = pc_to_gt(pc);
+
+	xe_force_wake_assert_held(gt_to_fw(gt), XE_FW_GT);
+	pc_set_cur_freq(pc, pc_max_freq_cap(pc));
+}
+
+/**
+ * xe_guc_pc_init_early - Initialize RPx values
+ * @pc: Xe_GuC_PC instance
+ */
 void xe_guc_pc_init_early(struct xe_guc_pc *pc)
 {
 	struct xe_gt *gt = pc_to_gt(pc);
 
 	xe_force_wake_assert_held(gt_to_fw(gt), XE_FW_GT);
 	pc_init_fused_rp_values(pc);
-	pc_set_cur_freq(pc, pc_max_freq_cap(pc));
 }
 
 static int pc_adjust_freq_bounds(struct xe_guc_pc *pc)

drivers/gpu/drm/xe/xe_guc_pc.h

@@ -33,5 +33,6 @@ u64 xe_guc_pc_rc6_residency(struct xe_guc_pc *pc);
 u64 xe_guc_pc_mc6_residency(struct xe_guc_pc *pc);
 void xe_guc_pc_init_early(struct xe_guc_pc *pc);
 int xe_guc_pc_restore_stashed_freq(struct xe_guc_pc *pc);
+void xe_guc_pc_raise_unslice(struct xe_guc_pc *pc);
 
 #endif /* _XE_GUC_PC_H_ */