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Commit 8b417c26 authored by Dave Gordon's avatar Dave Gordon Committed by Daniel Vetter
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drm/i915: Debugfs interface for GuC submission statistics 



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

v2:
    Remove surplus blank line in output [Chris Wilson]

v5:
    Added GuC per-engine submission & seqno statistics

v6:
    Add per-ring statistics to client, refactor client-dumper.

Signed-off-by: default avatarDave Gordon <david.s.gordon@intel.com>
Signed-off-by: default avatarAlex Dai <yu.dai@intel.com>
Reviewed-by: default avatarTom O'Rourke <Tom.O'Rourke@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent d1675198

drivers/gpu/drm/i915/i915_debugfs.c

+76 −0
Original line number Diff line number Diff line
@@ -2412,6 +2412,81 @@ static int i915_guc_load_status_info(struct seq_file *m, void *data) 
	return 0;

}



static void i915_guc_client_info(struct seq_file *m,

				 struct drm_i915_private *dev_priv,

				 struct i915_guc_client *client)

{

	struct intel_engine_cs *ring;

	uint64_t tot = 0;

	uint32_t i;



	seq_printf(m, "\tPriority %d, GuC ctx index: %u, PD offset 0x%x\n",

		client->priority, client->ctx_index, client->proc_desc_offset);

	seq_printf(m, "\tDoorbell id %d, offset: 0x%x, cookie 0x%x\n",

		client->doorbell_id, client->doorbell_offset, client->cookie);

	seq_printf(m, "\tWQ size %d, offset: 0x%x, tail %d\n",

		client->wq_size, client->wq_offset, client->wq_tail);



	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);



	for_each_ring(ring, dev_priv, i) {

		seq_printf(m, "\tSubmissions: %llu %s\n",

				client->submissions[i],

				ring->name);

		tot += client->submissions[i];

	}

	seq_printf(m, "\tTotal: %llu\n", tot);

}



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 };

	struct intel_engine_cs *ring;

	enum intel_ring_id i;

	u64 total = 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 action failure count: %u\n", guc.action_fail);

	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 last action error code: %d\n", guc.action_err);



	seq_printf(m, "\nGuC submissions:\n");

	for_each_ring(ring, dev_priv, i) {

		seq_printf(m, "\t%-24s: %10llu, last seqno 0x%08x %9d\n",

			ring->name, guc.submissions[i],

			guc.last_seqno[i], guc.last_seqno[i]);

		total += guc.submissions[i];

	}

	seq_printf(m, "\t%s: %llu\n", "Total", total);



	seq_printf(m, "\nGuC execbuf client @ %p:\n", guc.execbuf_client);

	i915_guc_client_info(m, dev_priv, &client);



	/* Add more as required ... */



	return 0;

}



static int i915_guc_log_dump(struct seq_file *m, void *data)

{

	struct drm_info_node *node = m->private;
@@ -5099,6 +5174,7 @@ 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},