drm/i915/debugfs: hook up ttm_resource_manager_debug

This should give a more complete view of the various bits of internal
resource manager state, for device local-memory.

v2(Thomas):
   - Move the region printing into a nice helper
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210819093419.295636-2-matthew.auld@intel.com

drivers/gpu/drm/i915/i915_debugfs.c

@@ -238,6 +238,7 @@ i915_debugfs_describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 static int i915_gem_object_info(struct seq_file *m, void *data)
 {
 	struct drm_i915_private *i915 = node_to_i915(m->private);
+	struct drm_printer p = drm_seq_file_printer(m);
 	struct intel_memory_region *mr;
 	enum intel_region_id id;
 
@@ -246,8 +247,7 @@ static int i915_gem_object_info(struct seq_file *m, void *data)
 		   atomic_read(&i915->mm.free_count),
 		   i915->mm.shrink_memory);
 	for_each_memory_region(mr, i915, id)
-		seq_printf(m, "%s: total:%pa, available:%pa bytes\n",
-			   mr->name, &mr->total, &mr->avail);
+		intel_memory_region_debug(mr, &p);
 
 	return 0;
 }

drivers/gpu/drm/i915/intel_memory_region.c

@@ -78,6 +78,18 @@ int intel_memory_region_reserve(struct intel_memory_region *mem,
 	return i915_ttm_buddy_man_reserve(man, offset, size);
 }
 
+void intel_memory_region_debug(struct intel_memory_region *mr,
+			       struct drm_printer *printer)
+{
+	drm_printf(printer, "%s: ", mr->name);
+
+	if (mr->region_private)
+		ttm_resource_manager_debug(mr->region_private, printer);
+	else
+		drm_printf(printer, "total:%pa, available:%pa bytes\n",
+			   &mr->total, &mr->avail);
+}
+
 struct intel_memory_region *
 intel_memory_region_create(struct drm_i915_private *i915,
 			   resource_size_t start,

drivers/gpu/drm/i915/intel_memory_region.h

@@ -15,6 +15,7 @@
 
 struct drm_i915_private;
 struct drm_i915_gem_object;
+struct drm_printer;
 struct intel_memory_region;
 struct sg_table;
 struct ttm_resource;
@@ -127,6 +128,9 @@ int intel_memory_region_reserve(struct intel_memory_region *mem,
 				resource_size_t offset,
 				resource_size_t size);
 
+void intel_memory_region_debug(struct intel_memory_region *mr,
+			       struct drm_printer *printer);
+
 struct intel_memory_region *
 i915_gem_ttm_system_setup(struct drm_i915_private *i915,
 			  u16 type, u16 instance);