[Intel-xe] [PATCH v3 19/20] drm/xe/guc: Move GuC power control init to "post-hwconfig"

[Michał Winiarski]

SLPC is not used at "hwconfig" stage. Move the initialization of data
structures used for SLPC to a later point in probe.
Also - move the xe_guc_pc_init_early to happen just prior to initial
"hwconfig" load.

Signed-off-by: Michał Winiarski <michal.winiarski at intel.com>
---
 drivers/gpu/drm/xe/xe_gt.c  |  3 ---
 drivers/gpu/drm/xe/xe_guc.c | 25 +++++++++++++++++++------
 2 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_gt.c b/drivers/gpu/drm/xe/xe_gt.c
index d0962e0cc27e9..73665e4e66f22 100644
--- a/drivers/gpu/drm/xe/xe_gt.c
+++ b/drivers/gpu/drm/xe/xe_gt.c
@@ -348,9 +348,6 @@ static int gt_fw_domain_init(struct xe_gt *gt)
 	if (err)
 		goto err_force_wake;
 
-	/* Raise GT freq to speed up HuC/GuC load */
-	xe_guc_pc_init_early(&gt->uc.guc.pc);
-
 	err = xe_uc_init_hwconfig(&gt->uc);
 	if (err)
 		goto err_force_wake;
diff --git a/drivers/gpu/drm/xe/xe_guc.c b/drivers/gpu/drm/xe/xe_guc.c
index 3f430d5bc1051..e04b04be32b7d 100644
--- a/drivers/gpu/drm/xe/xe_guc.c
+++ b/drivers/gpu/drm/xe/xe_guc.c
@@ -246,11 +246,19 @@ static void guc_fini(struct drm_device *drm, void *arg)
 	struct xe_guc *guc = arg;
 
 	xe_force_wake_get(gt_to_fw(guc_to_gt(guc)), XE_FORCEWAKE_ALL);
-	xe_guc_pc_fini(&guc->pc);
 	xe_uc_fini_hw(&guc_to_gt(guc)->uc);
 	xe_force_wake_put(gt_to_fw(guc_to_gt(guc)), XE_FORCEWAKE_ALL);
 }
 
+static void guc_fini_post_hwconfig(struct drm_device *drm, void *arg)
+{
+	struct xe_guc *guc = arg;
+
+	xe_force_wake_get(gt_to_fw(guc_to_gt(guc)), XE_FORCEWAKE_ALL);
+	xe_guc_pc_fini(&guc->pc);
+	xe_force_wake_put(gt_to_fw(guc_to_gt(guc)), XE_FORCEWAKE_ALL);
+}
+
 static int __guc_bo_reinit(struct xe_guc *guc, struct xe_bo **src)
 {
 	struct xe_tile *tile = gt_to_tile(guc_to_gt(guc));
@@ -316,11 +324,7 @@ int xe_guc_init(struct xe_guc *guc)
 	if (ret)
 		goto out;
 
-	ret = xe_guc_pc_init(&guc->pc);
-	if (ret)
-		goto out;
-
-	ret = drmm_add_action_or_reset(&gt_to_xe(gt)->drm, guc_fini, guc);
+	ret = drmm_add_action_or_reset(&xe->drm, guc_fini, guc);
 	if (ret)
 		goto out;
 
@@ -348,6 +352,7 @@ int xe_guc_init(struct xe_guc *guc)
  */
 int xe_guc_init_post_hwconfig(struct xe_guc *guc)
 {
+	struct xe_gt *gt = guc_to_gt(guc);
 	int ret;
 
 	ret = xe_guc_realloc_post_hwconfig(guc);
@@ -356,6 +361,11 @@ int xe_guc_init_post_hwconfig(struct xe_guc *guc)
 
 	guc_init_params_post_hwconfig(guc);
 
+	ret = xe_guc_pc_init(&guc->pc);
+	if (ret)
+		return ret;
+	ret = drmm_add_action_or_reset(&gt_to_xe(gt)->drm, guc_fini_post_hwconfig, guc);
+
 	return xe_guc_ads_init_post_hwconfig(&guc->ads);
 }
 
@@ -566,6 +576,9 @@ 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);
 	if (ret)
 		return ret;
-- 
2.42.1