[PATCH 14/15] drm/i915: Debugfs interface for GuC submission statistics

Dave Gordon
2015-06-15T18:38:59Z

This provides a means of reading status and counts relating
to GuC actions and submissions.

Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Signed-off-by: Alex Dai <yu.dai@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 41 +++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index c6e2582..e699b38 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2388,6 +2388,46 @@ static int i915_guc_load_status_info(struct seq_file *m, void *data)
return 0;
}

+static int i915_guc_info(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 intel_guc guc;
+ struct i915_guc_client client = { .client_obj = 0 };
+
+ if (!HAS_GUC_SCHED(dev_priv->dev))
+ return 0;
+
+ /* Take a local copy of the GuC data, so we can dump it at leisure */
+ spin_lock(&dev_priv->guc.host2guc_lock);
+ guc = dev_priv->guc;
+ if (guc.execbuf_client) {
+ spin_lock(&guc.execbuf_client->wq_lock);
+ client = *guc.execbuf_client;
+ spin_unlock(&guc.execbuf_client->wq_lock);
+ }
+ spin_unlock(&dev_priv->guc.host2guc_lock);
+
+ seq_printf(m, "GuC total action count: %llu\n", guc.action_count);
+ seq_printf(m, "GuC last action command: 0x%x\n", guc.action_cmd);
+ seq_printf(m, "GuC last action status: 0x%x\n", guc.action_status);
+
+ seq_printf(m, "GuC action failure count: %u\n", guc.action_fail);
+ seq_printf(m, "GuC last action error code: %d\n", guc.action_err);
+
+ seq_printf(m, "\nGuC execbuf client @ %p:\n", guc.execbuf_client);
+ seq_printf(m, "\tTotal submissions: %llu\n", client.submissions);
+ seq_printf(m, "\tFailed to queue: %u\n", client.q_fail);
+ seq_printf(m, "\tFailed doorbell: %u\n", client.b_fail);
+ seq_printf(m, "\tLast submission result: %d\n", client.retcode);
+
+ /* Add more as required ... */
+ seq_puts(m, "\n");
+
+ return 0;
+}
+
static int i915_guc_log_dump(struct seq_file *m, void *data)
{
struct drm_info_node *node = m->private;
@@ -5110,6 +5150,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
{"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
{"i915_gem_hws_vebox", i915_hws_info, 0, (void *)VECS},
{"i915_gem_batch_pool", i915_gem_batch_pool_info, 0},
+ {"i915_guc_info", i915_guc_info, 0},
{"i915_guc_load_status", i915_guc_load_status_info, 0},
{"i915_guc_log_dump", i915_guc_log_dump, 0},
{"i915_frequency_info", i915_frequency_info, 0},
--
1.7.9.5