Re: [PATCH 02/14] drm/i915: New structure to contain GuC logging related fields

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On 02/07/16 19:51, akash.goel@xxxxxxxxx wrote:
From: Akash Goel <akash.goel@xxxxxxxxx>

So far there were 2 fields related to GuC logs in 'intel_guc' structure.
For the support of capturing GuC logs & storing them in a local buffer,
multiple new fields would have to be added. This warrants a separate
structure to contain the fields related to GuC logging state.
Added a new structure 'intel_guc_log' and instance of it inside
'intel_guc' structure.

Signed-off-by: Akash Goel <akash.goel@xxxxxxxxx>
---
  drivers/gpu/drm/i915/i915_debugfs.c        |  2 +-
  drivers/gpu/drm/i915/i915_guc_submission.c | 10 +++++-----
  drivers/gpu/drm/i915/intel_guc.h           |  8 ++++++--
  drivers/gpu/drm/i915/intel_guc_loader.c    |  2 +-
  4 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 5185e02..de197535 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2625,7 +2625,7 @@ static int i915_guc_log_dump(struct seq_file *m, void *data)
  	struct drm_info_node *node = m->private;
  	struct drm_device *dev = node->minor->dev;
  	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct drm_i915_gem_object *log_obj = dev_priv->guc.log_obj;
+	struct drm_i915_gem_object *log_obj = dev_priv->guc.log.obj;
  	u32 *log;
  	int i = 0, pg;

diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 28a810f..fedf82b 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -835,7 +835,7 @@ static void guc_create_log(struct intel_guc *guc)
  		GUC_LOG_ISR_PAGES + 1 +
  		GUC_LOG_CRASH_PAGES + 1) << PAGE_SHIFT;

-	obj = guc->log_obj;
+	obj = guc->log.obj;
  	if (!obj) {
  		obj = gem_allocate_guc_obj(dev_priv, size);
  		if (!obj) {
@@ -844,7 +844,7 @@ static void guc_create_log(struct intel_guc *guc)
  			return;
  		}

-		guc->log_obj = obj;
+		guc->log.obj = obj;
  	}

  	/* each allocated unit is a page */
@@ -854,7 +854,7 @@ static void guc_create_log(struct intel_guc *guc)
  		(GUC_LOG_CRASH_PAGES << GUC_LOG_CRASH_SHIFT);

  	offset = i915_gem_obj_ggtt_offset(obj) >> PAGE_SHIFT; /* in pages */
-	guc->log_flags = (offset << GUC_LOG_BUF_ADDR_SHIFT) | flags;
+	guc->log.flags = (offset << GUC_LOG_BUF_ADDR_SHIFT) | flags;
  }

  static void init_guc_policies(struct guc_policies *policies)
@@ -1015,8 +1015,8 @@ void i915_guc_submission_fini(struct drm_i915_private *dev_priv)
  	gem_release_guc_obj(dev_priv->guc.ads_obj);
  	guc->ads_obj = NULL;

-	gem_release_guc_obj(dev_priv->guc.log_obj);
-	guc->log_obj = NULL;
+	gem_release_guc_obj(dev_priv->guc.log.obj);
+	guc->log.obj = NULL;

  	if (guc->ctx_pool_obj)
  		ida_destroy(&guc->ctx_ids);
diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h
index 3e3e743..d52eca3 100644
--- a/drivers/gpu/drm/i915/intel_guc.h
+++ b/drivers/gpu/drm/i915/intel_guc.h
@@ -122,10 +122,14 @@ struct intel_guc_fw {
  	uint32_t ucode_offset;
  };

+struct intel_guc_log {
+	uint32_t flags;
+	struct drm_i915_gem_object *obj;
+};
+
  struct intel_guc {
  	struct intel_guc_fw guc_fw;
-	uint32_t log_flags;
-	struct drm_i915_gem_object *log_obj;
+	struct intel_guc_log log;

  	struct drm_i915_gem_object *ads_obj;

diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index db3c897..8ef9b7f 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -173,7 +173,7 @@ static void set_guc_init_params(struct drm_i915_private *dev_priv)
  	params[GUC_CTL_FEATURE] |= GUC_CTL_DISABLE_SCHEDULER |
  			GUC_CTL_VCS2_ENABLED;

-	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] =


Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Regards,

Tvrtko
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