[Intel-gfx] [RFC 01/12] drm/i915: Decouple GuC log setup from verbosity parameter

[akash.goel at intel.com]

From: Sagar Arun Kamble <sagar.a.kamble at intel.com>

GuC Log buffer allocation was tied up with verbosity level kernel parameter
i915.guc_log_level. User could be given a provision to enable logging at
runtime and not necessarily during load time only. This patch will perform
allocation of shared log buffer always but will initially enable logging on
GuC side through init params based on i915.guc_log_level.

Signed-off-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
Signed-off-by: Akash Goel <akash.goel at intel.com>
---
 drivers/gpu/drm/i915/i915_guc_submission.c | 3 ---
 drivers/gpu/drm/i915/intel_guc_loader.c    | 8 +++++---
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index ac72451..da7c242 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -776,9 +776,6 @@ static void guc_create_log(struct intel_guc *guc)
 	unsigned long offset;
 	uint32_t size, flags;
 
-	if (i915.guc_log_level < GUC_LOG_VERBOSITY_MIN)
-		return;
-
 	if (i915.guc_log_level > GUC_LOG_VERBOSITY_MAX)
 		i915.guc_log_level = GUC_LOG_VERBOSITY_MAX;
 
diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index 29273e5..fdaeed8 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -162,11 +162,13 @@ static void set_guc_init_params(struct drm_i915_private *dev_priv)
 	params[GUC_CTL_FEATURE] |= GUC_CTL_DISABLE_SCHEDULER |
 			GUC_CTL_VCS2_ENABLED;
 
-	if (i915.guc_log_level >= 0) {
-		params[GUC_CTL_LOG_PARAMS] = guc->log_flags;
+	params[GUC_CTL_LOG_PARAMS] = guc->log_flags;
+
+	if (i915.guc_log_level >= 0)
 		params[GUC_CTL_DEBUG] =
 			i915.guc_log_level << GUC_LOG_VERBOSITY_SHIFT;
-	}
+	else
+		params[GUC_CTL_DEBUG] = GUC_LOG_DISABLED;
 
 	if (guc->ads_obj) {
 		u32 ads = (u32)i915_gem_obj_ggtt_offset(guc->ads_obj)
-- 
1.9.2