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Commit a8b9370f authored by Oscar Mateo's avatar Oscar Mateo Committed by Joonas Lahtinen
Browse files

drm/i915/guc: Dump the GuC stage descriptor pool in debugfs 



We are missing pieces of information that could be useful for GuC
debugging.

v2: Reuse some code (Joonas)

Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: default avatarOscar Mateo <oscar.mateo@intel.com>
[Joonas: Removed extra newline and s/uint32_t/u32/ for checkpatch.pl]
Signed-off-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1494428691-20672-1-git-send-email-oscar.mateo@intel.com
parent ff26ffa8

drivers/gpu/drm/i915/i915_debugfs.c

+71 −5
Original line number Diff line number Diff line
@@ -2494,22 +2494,33 @@ static void i915_guc_client_info(struct seq_file *m, 
	seq_printf(m, "\tTotal: %llu\n", tot);

}



static int i915_guc_info(struct seq_file *m, void *data)

static bool check_guc_submission(struct seq_file *m)

{

	struct drm_i915_private *dev_priv = node_to_i915(m->private);

	const struct intel_guc *guc = &dev_priv->guc;

	struct intel_engine_cs *engine;

	enum intel_engine_id id;

	u64 total;



	if (!guc->execbuf_client) {

		seq_printf(m, "GuC submission %s\n",

			   HAS_GUC_SCHED(dev_priv) ?

			   "disabled" :

			   "not supported");

		return 0;

		return false;

	}



	return true;

}



static int i915_guc_info(struct seq_file *m, void *data)

{

	struct drm_i915_private *dev_priv = node_to_i915(m->private);

	const struct intel_guc *guc = &dev_priv->guc;

	struct intel_engine_cs *engine;

	enum intel_engine_id id;

	u64 total;



	if (!check_guc_submission(m))

		return 0;



	seq_printf(m, "Doorbell map:\n");

	seq_printf(m, "\t%*pb\n", GUC_NUM_DOORBELLS, guc->doorbell_bitmap);

	seq_printf(m, "Doorbell next cacheline: 0x%x\n\n", guc->db_cacheline);
@@ -2540,6 +2551,60 @@ static int i915_guc_info(struct seq_file *m, void *data) 
	return 0;

}



static int i915_guc_stage_pool(struct seq_file *m, void *data)

{

	struct drm_i915_private *dev_priv = node_to_i915(m->private);

	const struct intel_guc *guc = &dev_priv->guc;

	struct guc_stage_desc *desc = guc->stage_desc_pool_vaddr;

	struct i915_guc_client *client = guc->execbuf_client;

	unsigned int tmp;

	int index;



	if (!check_guc_submission(m))

		return 0;



	for (index = 0; index < GUC_MAX_STAGE_DESCRIPTORS; index++, desc++) {

		struct intel_engine_cs *engine;



		if (!(desc->attribute & GUC_STAGE_DESC_ATTR_ACTIVE))

			continue;



		seq_printf(m, "GuC stage descriptor %u:\n", index);

		seq_printf(m, "\tIndex: %u\n", desc->stage_id);

		seq_printf(m, "\tAttribute: 0x%x\n", desc->attribute);

		seq_printf(m, "\tPriority: %d\n", desc->priority);

		seq_printf(m, "\tDoorbell id: %d\n", desc->db_id);

		seq_printf(m, "\tEngines used: 0x%x\n",

			   desc->engines_used);

		seq_printf(m, "\tDoorbell trigger phy: 0x%llx, cpu: 0x%llx, uK: 0x%x\n",

			   desc->db_trigger_phy,

			   desc->db_trigger_cpu,

			   desc->db_trigger_uk);

		seq_printf(m, "\tProcess descriptor: 0x%x\n",

			   desc->process_desc);

		seq_printf(m, "\tWorkqueue adddress: 0x%x, size: 0x%x\n",

			   desc->wq_addr, desc->wq_size);

		seq_putc(m, '\n');



		for_each_engine_masked(engine, dev_priv, client->engines, tmp) {

			u32 guc_engine_id = engine->guc_id;

			struct guc_execlist_context *lrc =

						&desc->lrc[guc_engine_id];



			seq_printf(m, "\t%s LRC:\n", engine->name);

			seq_printf(m, "\t\tContext desc: 0x%x\n",

				   lrc->context_desc);

			seq_printf(m, "\t\tContext id: 0x%x\n", lrc->context_id);

			seq_printf(m, "\t\tLRCA: 0x%x\n", lrc->ring_lrca);

			seq_printf(m, "\t\tRing begin: 0x%x\n", lrc->ring_begin);

			seq_printf(m, "\t\tRing end: 0x%x\n", lrc->ring_end);

			seq_putc(m, '\n');

		}

	}



	return 0;

}



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

{

	struct drm_i915_private *dev_priv = node_to_i915(m->private);
@@ -4746,6 +4811,7 @@ static const struct drm_info_list i915_debugfs_list[] = { 
	{"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_guc_stage_pool", i915_guc_stage_pool, 0},

	{"i915_huc_load_status", i915_huc_load_status_info, 0},

	{"i915_frequency_info", i915_frequency_info, 0},

	{"i915_hangcheck_info", i915_hangcheck_info, 0},