[PATCH 1/7] drm/i915/guc: Don't store runtime GuC log level in modparam

* [PATCH 1/7] drm/i915/guc: Don't store runtime GuC log level in modparam
@ 2018-05-30 13:53 Piotr Piorkowski
  2018-05-30 13:53 ` [PATCH 2/7] drm/i915/guc: Refactoring preparation of the GUC_CTL_DEBUG parameter Piotr Piorkowski
                   ` (8 more replies)
  0 siblings, 9 replies; 17+ messages in thread
From: Piotr Piorkowski @ 2018-05-30 13:53 UTC (permalink / raw)
  To: intel-gfx

From: Piotr Piórkowski <piotr.piorkowski@intel.com>

Currently we are using modparam as placeholder for GuC log level.
Stop doing this and keep runtime GuC level in intel_guc_log struct.

Signed-off-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_guc.c     |  8 +++-----
 drivers/gpu/drm/i915/intel_guc_log.c | 18 +++++-------------
 drivers/gpu/drm/i915/intel_guc_log.h |  9 ++++++++-
 drivers/gpu/drm/i915/intel_uc.c      |  2 +-
 4 files changed, 17 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
index 116f4ccf1bbd..9025837850ad 100644
--- a/drivers/gpu/drm/i915/intel_guc.c
+++ b/drivers/gpu/drm/i915/intel_guc.c
@@ -203,13 +203,11 @@ void intel_guc_fini(struct intel_guc *guc)
 	guc_shared_data_destroy(guc);
 }
 
-static u32 get_log_control_flags(void)
+static u32 guc_ctl_debug_flags(struct intel_guc *guc)
 {
-	u32 level = i915_modparams.guc_log_level;
+	u32 level = intel_guc_log_level_get(&guc->log);
 	u32 flags = 0;
 
-	GEM_BUG_ON(level < 0);
-
 	if (!GUC_LOG_LEVEL_IS_ENABLED(level))
 		flags |= GUC_LOG_DEFAULT_DISABLED;
 
@@ -250,7 +248,7 @@ void intel_guc_init_params(struct intel_guc *guc)
 
 	params[GUC_CTL_LOG_PARAMS] = guc->log.flags;
 
-	params[GUC_CTL_DEBUG] = get_log_control_flags();
+	params[GUC_CTL_DEBUG] = guc_ctl_debug_flags(guc);
 
 	/* If GuC submission is enabled, set up additional parameters here */
 	if (USES_GUC_SUBMISSION(dev_priv)) {
diff --git a/drivers/gpu/drm/i915/intel_guc_log.c b/drivers/gpu/drm/i915/intel_guc_log.c
index 401e1704d61e..c036d0fac370 100644
--- a/drivers/gpu/drm/i915/intel_guc_log.c
+++ b/drivers/gpu/drm/i915/intel_guc_log.c
@@ -475,11 +475,12 @@ int intel_guc_log_create(struct intel_guc_log *log)
 	offset = intel_guc_ggtt_offset(guc, vma) >> PAGE_SHIFT;
 	log->flags = (offset << GUC_LOG_BUF_ADDR_SHIFT) | flags;
 
+	log->level = i915_modparams.guc_log_level;
+
 	return 0;
 
 err:
-	/* logging will be off */
-	i915_modparams.guc_log_level = 0;
+	DRM_ERROR("Failed to allocate GuC log buffer. %d\n", ret);
 	return ret;
 }
 
@@ -488,14 +489,6 @@ void intel_guc_log_destroy(struct intel_guc_log *log)
 	i915_vma_unpin_and_release(&log->vma);
 }
 
-int intel_guc_log_level_get(struct intel_guc_log *log)
-{
-	GEM_BUG_ON(!log->vma);
-	GEM_BUG_ON(i915_modparams.guc_log_level < 0);
-
-	return i915_modparams.guc_log_level;
-}
-
 int intel_guc_log_level_set(struct intel_guc_log *log, u64 val)
 {
 	struct intel_guc *guc = log_to_guc(log);
@@ -504,7 +497,6 @@ int intel_guc_log_level_set(struct intel_guc_log *log, u64 val)
 
 	BUILD_BUG_ON(GUC_LOG_VERBOSITY_MIN != 0);
 	GEM_BUG_ON(!log->vma);
-	GEM_BUG_ON(i915_modparams.guc_log_level < 0);
 
 	/*
 	 * GuC is recognizing log levels starting from 0 to max, we're using 0
@@ -515,7 +507,7 @@ int intel_guc_log_level_set(struct intel_guc_log *log, u64 val)
 
 	mutex_lock(&dev_priv->drm.struct_mutex);
 
-	if (i915_modparams.guc_log_level == val) {
+	if (log->level == val) {
 		ret = 0;
 		goto out_unlock;
 	}
@@ -530,7 +522,7 @@ int intel_guc_log_level_set(struct intel_guc_log *log, u64 val)
 		goto out_unlock;
 	}
 
-	i915_modparams.guc_log_level = val;
+	log->level = val;
 
 out_unlock:
 	mutex_unlock(&dev_priv->drm.struct_mutex);
diff --git a/drivers/gpu/drm/i915/intel_guc_log.h b/drivers/gpu/drm/i915/intel_guc_log.h
index fa80535a6f9d..ea375c3b5d08 100644
--- a/drivers/gpu/drm/i915/intel_guc_log.h
+++ b/drivers/gpu/drm/i915/intel_guc_log.h
@@ -30,6 +30,7 @@
 #include <linux/workqueue.h>
 
 #include "intel_guc_fwif.h"
+#include "i915_gem.h"
 
 struct intel_guc;
 
@@ -58,6 +59,7 @@ struct intel_guc;
 #define GUC_LOG_LEVEL_MAX GUC_VERBOSITY_TO_LOG_LEVEL(GUC_LOG_VERBOSITY_MAX)
 
 struct intel_guc_log {
+	u32 level;
 	u32 flags;
 	struct i915_vma *vma;
 	struct {
@@ -80,7 +82,6 @@ void intel_guc_log_init_early(struct intel_guc_log *log);
 int intel_guc_log_create(struct intel_guc_log *log);
 void intel_guc_log_destroy(struct intel_guc_log *log);
 
-int intel_guc_log_level_get(struct intel_guc_log *log);
 int intel_guc_log_level_set(struct intel_guc_log *log, u64 control_val);
 bool intel_guc_log_relay_enabled(const struct intel_guc_log *log);
 int intel_guc_log_relay_open(struct intel_guc_log *log);
@@ -89,4 +90,10 @@ void intel_guc_log_relay_close(struct intel_guc_log *log);
 
 void intel_guc_log_handle_flush_event(struct intel_guc_log *log);
 
+static inline u32 intel_guc_log_level_get(struct intel_guc_log *log)
+{
+	GEM_BUG_ON(!log->vma);
+	return log->level;
+}
+
 #endif
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index 6a73e81f373b..5ce8d5df1b58 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -207,7 +207,7 @@ void intel_uc_init_mmio(struct drm_i915_private *i915)
 
 static void guc_capture_load_err_log(struct intel_guc *guc)
 {
-	if (!guc->log.vma || !i915_modparams.guc_log_level)
+	if (!guc->log.vma || !intel_guc_log_level_get(&guc->log))
 		return;
 
 	if (!guc->load_err_log)
-- 
2.14.3

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