[PATCH v6 3/6] drm/xe/guc: Add new debugfs entry for lfd format output

[Zhanjun Dong]

Add new debugfs entry "guc_log_lfd", prepared for output guc log
in LFD(Log Format Descriptors) format.

Signed-off-by: Zhanjun Dong <zhanjun.dong at intel.com>
---
 drivers/gpu/drm/xe/xe_guc_debugfs.c |  7 +++++++
 drivers/gpu/drm/xe/xe_guc_log.c     | 32 +++++++++++++++++++++++++++++
 drivers/gpu/drm/xe/xe_guc_log.h     |  1 +
 3 files changed, 40 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_guc_debugfs.c b/drivers/gpu/drm/xe/xe_guc_debugfs.c
index 0b102ab46c4d..6cbc4240a3bd 100644
--- a/drivers/gpu/drm/xe/xe_guc_debugfs.c
+++ b/drivers/gpu/drm/xe/xe_guc_debugfs.c
@@ -85,6 +85,12 @@ static int guc_log(struct xe_guc *guc, struct drm_printer *p)
 	return 0;
 }
 
+static int guc_log_lfd(struct xe_guc *guc, struct drm_printer *p)
+{
+	xe_guc_log_print_lfd(&guc->log, p);
+	return 0;
+}
+
 static int guc_log_dmesg(struct xe_guc *guc, struct drm_printer *p)
 {
 	xe_guc_log_print_dmesg(&guc->log);
@@ -121,6 +127,7 @@ static const struct drm_info_list slpc_debugfs_list[] = {
 /* everything else should be added here */
 static const struct drm_info_list pf_only_debugfs_list[] = {
 	{ "guc_log", .show = guc_debugfs_show, .data = guc_log },
+	{ "guc_log_lfd", .show = guc_debugfs_show, .data = guc_log_lfd },
 	{ "guc_log_dmesg", .show = guc_debugfs_show, .data = guc_log_dmesg },
 };
 
diff --git a/drivers/gpu/drm/xe/xe_guc_log.c b/drivers/gpu/drm/xe/xe_guc_log.c
index c01ccb35dc75..d2256773aaf3 100644
--- a/drivers/gpu/drm/xe/xe_guc_log.c
+++ b/drivers/gpu/drm/xe/xe_guc_log.c
@@ -9,6 +9,7 @@
 
 #include <drm/drm_managed.h>
 
+#include "abi/guc_lfd_abi.h"
 #include "regs/xe_guc_regs.h"
 #include "xe_bo.h"
 #include "xe_devcoredump.h"
@@ -19,6 +20,12 @@
 #include "xe_mmio.h"
 #include "xe_module.h"
 
+static const struct guc_lfd_file_header default_guc_lfd_file_header = {
+	.magic = GUC_LFD_DRIVER_KEY_STREAMING,
+	.version.dw0 = FIELD_PREP_CONST(GUC_LFD_VERSION_MINOR, GUC_LFD_FORMAT_VERSION_MINOR) |
+		       FIELD_PREP_CONST(GUC_LFD_VERSION_MAJOR, GUC_LFD_FORMAT_VERSION_MAJOR)
+};
+
 static struct xe_guc *
 log_to_guc(struct xe_guc_log *log)
 {
@@ -216,6 +223,17 @@ void xe_guc_log_snapshot_print(struct xe_guc_log_snapshot *snapshot, struct drm_
 	}
 }
 
+static void
+xe_guc_log_snapshot_print_lfd(struct xe_guc_log_snapshot *snapshot, struct drm_printer *p)
+{
+	if (!snapshot || !snapshot->size)
+		return;
+
+	/* Output LFD file header */
+	xe_print_blob_ascii85(p, "[LOG].data", 0, &default_guc_lfd_file_header, 0,
+			      offsetof(struct guc_lfd_file_header, lfd_stream));
+}
+
 /**
  * xe_guc_log_print_dmesg - dump a copy of the GuC log to dmesg
  * @log: GuC log structure
@@ -251,6 +269,20 @@ void xe_guc_log_print(struct xe_guc_log *log, struct drm_printer *p)
 	xe_guc_log_snapshot_free(snapshot);
 }
 
+/**
+ * xe_guc_log_print_lfd - dump a copy of the GuC log to some useful location
+ * @log: GuC log structure
+ * @p: the printer object to output to
+ */
+void xe_guc_log_print_lfd(struct xe_guc_log *log, struct drm_printer *p)
+{
+	struct xe_guc_log_snapshot *snapshot;
+
+	snapshot = xe_guc_log_snapshot_capture(log, false);
+	xe_guc_log_snapshot_print_lfd(snapshot, p);
+	xe_guc_log_snapshot_free(snapshot);
+}
+
 int xe_guc_log_init(struct xe_guc_log *log)
 {
 	struct xe_device *xe = log_to_xe(log);
diff --git a/drivers/gpu/drm/xe/xe_guc_log.h b/drivers/gpu/drm/xe/xe_guc_log.h
index f1e2b0be90a9..0f6299886010 100644
--- a/drivers/gpu/drm/xe/xe_guc_log.h
+++ b/drivers/gpu/drm/xe/xe_guc_log.h
@@ -40,6 +40,7 @@ struct xe_device;
 
 int xe_guc_log_init(struct xe_guc_log *log);
 void xe_guc_log_print(struct xe_guc_log *log, struct drm_printer *p);
+void xe_guc_log_print_lfd(struct xe_guc_log *log, struct drm_printer *p);
 void xe_guc_log_print_dmesg(struct xe_guc_log *log);
 struct xe_guc_log_snapshot *xe_guc_log_snapshot_capture(struct xe_guc_log *log, bool atomic);
 void xe_guc_log_snapshot_print(struct xe_guc_log_snapshot *snapshot, struct drm_printer *p);
-- 
2.34.1