[Intel-gfx] [PATCH 16/51] drm/i915/guc: Update GuC debugfs to support new GuC

Matthew Brost
2021-07-16T20:00:16Z

Update GuC debugfs to support the new GuC structures.

v2:
(John Harrison)
- Remove intel_lrc_reg.h include from i915_debugfs.c
(Michal)
- Rename GuC debugfs functions

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
---
drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 22 ++++++++
drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h | 3 +
.../gpu/drm/i915/gt/uc/intel_guc_debugfs.c | 23 +++++++-
.../gpu/drm/i915/gt/uc/intel_guc_submission.c | 55 +++++++++++++++++++
.../gpu/drm/i915/gt/uc/intel_guc_submission.h | 5 ++
5 files changed, 107 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
index f1cbed6b9f0a..503a78517610 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
@@ -1171,3 +1171,25 @@ void intel_guc_ct_event_handler(struct intel_guc_ct *ct)

ct_try_receive_message(ct);
}
+
+void intel_guc_ct_print_info(struct intel_guc_ct *ct,
+ struct drm_printer *p)
+{
+ drm_printf(p, "CT %s\n", enableddisabled(ct->enabled));
+
+ if (!ct->enabled)
+ return;
+
+ drm_printf(p, "H2G Space: %u\n",
+ atomic_read(&ct->ctbs.send.space) * 4);
+ drm_printf(p, "Head: %u\n",
+ ct->ctbs.send.desc->head);
+ drm_printf(p, "Tail: %u\n",
+ ct->ctbs.send.desc->tail);
+ drm_printf(p, "G2H Space: %u\n",
+ atomic_read(&ct->ctbs.recv.space) * 4);
+ drm_printf(p, "Head: %u\n",
+ ct->ctbs.recv.desc->head);
+ drm_printf(p, "Tail: %u\n",
+ ct->ctbs.recv.desc->tail);
+}
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
index 4b30a562ae63..7b34026d264a 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
@@ -16,6 +16,7 @@

struct i915_vma;
struct intel_guc;
+struct drm_printer;

/**
* DOC: Command Transport (CT).
@@ -112,4 +113,6 @@ int intel_guc_ct_send(struct intel_guc_ct *ct, const u32 *action, u32 len,
u32 *response_buf, u32 response_buf_size, u32 flags);
void intel_guc_ct_event_handler(struct intel_guc_ct *ct);

+void intel_guc_ct_print_info(struct intel_guc_ct *ct, struct drm_printer *p);
+
#endif /* _INTEL_GUC_CT_H_ */
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
index fe7cb7b29a1e..7a454c91a736 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
@@ -9,6 +9,8 @@
#include "intel_guc.h"
#include "intel_guc_debugfs.h"
#include "intel_guc_log_debugfs.h"
+#include "gt/uc/intel_guc_ct.h"
+#include "gt/uc/intel_guc_submission.h"

static int guc_info_show(struct seq_file *m, void *data)
{
@@ -22,16 +24,35 @@ static int guc_info_show(struct seq_file *m, void *data)
drm_puts(&p, "\n");
intel_guc_log_info(&guc->log, &p);

- /* Add more as required ... */
+ if (!intel_guc_submission_is_used(guc))
+ return 0;
+
+ intel_guc_ct_print_info(&guc->ct, &p);
+ intel_guc_submission_print_info(guc, &p);

return 0;
}
DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_info);

+static int guc_registered_contexts_show(struct seq_file *m, void *data)
+{
+ struct intel_guc *guc = m->private;
+ struct drm_printer p = drm_seq_file_printer(m);
+
+ if (!intel_guc_submission_is_used(guc))
+ return -ENODEV;
+
+ intel_guc_submission_print_context_info(guc, &p);
+
+ return 0;
+}
+DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_registered_contexts);
+
void intel_guc_debugfs_register(struct intel_guc *guc, struct dentry *root)
{
static const struct debugfs_gt_file files[] = {
{ "guc_info", &guc_info_fops, NULL },
+ { "guc_registered_contexts", &guc_registered_contexts_fops, NULL },
};

if (!intel_guc_is_supported(guc))
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 088d11e2e497..a2af7e17dcc2 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -1602,3 +1602,58 @@ int intel_guc_sched_done_process_msg(struct intel_guc *guc,

return 0;
}
+
+void intel_guc_submission_print_info(struct intel_guc *guc,
+ struct drm_printer *p)
+{
+ struct i915_sched_engine *sched_engine = guc->sched_engine;
+ struct rb_node *rb;
+ unsigned long flags;
+
+ if (!sched_engine)
+ return;
+
+ drm_printf(p, "GuC Number Outstanding Submission G2H: %u\n",
+ atomic_read(&guc->outstanding_submission_g2h));
+ drm_printf(p, "GuC tasklet count: %u\n\n",
+ atomic_read(&sched_engine->tasklet.count));
+
+ spin_lock_irqsave(&sched_engine->lock, flags);
+ drm_printf(p, "Requests in GuC submit tasklet:\n");
+ for (rb = rb_first_cached(&sched_engine->queue); rb; rb = rb_next(rb)) {
+ struct i915_priolist *pl = to_priolist(rb);
+ struct i915_request *rq;
+
+ priolist_for_each_request(rq, pl)
+ drm_printf(p, "guc_id=%u, seqno=%llu\n",
+ rq->context->guc_id,
+ rq->fence.seqno);
+ }
+ spin_unlock_irqrestore(&sched_engine->lock, flags);
+ drm_printf(p, "\n");
+}
+
+void intel_guc_submission_print_context_info(struct intel_guc *guc,
+ struct drm_printer *p)
+{
+ struct intel_context *ce;
+ unsigned long index;
+
+ xa_for_each(&guc->context_lookup, index, ce) {
+ drm_printf(p, "GuC lrc descriptor %u:\n", ce->guc_id);
+ drm_printf(p, "\tHW Context Desc: 0x%08x\n", ce->lrc.lrca);
+ drm_printf(p, "\t\tLRC Head: Internal %u, Memory %u\n",
+ ce->ring->head,
+ ce->lrc_reg_state[CTX_RING_HEAD]);
+ drm_printf(p, "\t\tLRC Tail: Internal %u, Memory %u\n",
+ ce->ring->tail,
+ ce->lrc_reg_state[CTX_RING_TAIL]);
+ drm_printf(p, "\t\tContext Pin Count: %u\n",
+ atomic_read(&ce->pin_count));
+ drm_printf(p, "\t\tGuC ID Ref Count: %u\n",
+ atomic_read(&ce->guc_id_ref));
+ drm_printf(p, "\t\tSchedule State: 0x%x, 0x%x\n\n",
+ ce->guc_state.sched_state,
+ atomic_read(&ce->guc_sched_state_no_lock));
+ }
+}
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h
index 3f7005018939..2b9470c90558 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h
@@ -10,6 +10,7 @@

#include "intel_guc.h"

+struct drm_printer;
struct intel_engine_cs;

void intel_guc_submission_init_early(struct intel_guc *guc);
@@ -20,6 +21,10 @@ void intel_guc_submission_fini(struct intel_guc *guc);
int intel_guc_preempt_work_create(struct intel_guc *guc);
void intel_guc_preempt_work_destroy(struct intel_guc *guc);
int intel_guc_submission_setup(struct intel_engine_cs *engine);
+void intel_guc_submission_print_info(struct intel_guc *guc,
+ struct drm_printer *p);
+void intel_guc_submission_print_context_info(struct intel_guc *guc,
+ struct drm_printer *p);

static inline bool intel_guc_submission_is_supported(struct intel_guc *guc)
{
--
2.28.0