linux-kernel - [PATCH 1/2] drm/etnaviv: Implement drm_gem_object_funcs::print

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Message-Id: <20240825211929.614631-2-sui.jingfeng@linux.dev>
Date: Mon, 26 Aug 2024 05:19:28 +0800
From: Sui Jingfeng <sui.jingfeng@...ux.dev>
To: Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Lucas Stach <l.stach@...gutronix.de>,
	Russell King <linux+etnaviv@...linux.org.uk>,
	Christian Gmeiner <christian.gmeiner@...il.com>
Cc: David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	etnaviv@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Sui Jingfeng <sui.jingfeng@...ux.dev>
Subject: [PATCH 1/2] drm/etnaviv: Implement drm_gem_object_funcs::print_info()

It will be called by drm_gem_print_info() if have implemented, and this can
provide more information about the framebuffer objects.

Signed-off-by: Sui Jingfeng <sui.jingfeng@...ux.dev>
---
 drivers/gpu/drm/etnaviv/etnaviv_gem.c | 32 +++++++++++++++++++++++++++
 drivers/gpu/drm/etnaviv/etnaviv_gem.h |  2 +-
 2 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
index 5c0c9d4e3be1..9a688c95f34d 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
@@ -533,8 +533,40 @@ static const struct vm_operations_struct vm_ops = {
 	.close = drm_gem_vm_close,
 };
 
+static const char *etnaviv_gem_obj_caching_info(u32 flags)
+{
+	switch (flags & ETNA_BO_CACHE_MASK) {
+	case ETNA_BO_CACHED:
+		return "cached";
+	case ETNA_BO_UNCACHED:
+		return "uncached";
+	case ETNA_BO_WC:
+		return "write-combine";
+	default:
+		break;
+	}
+
+	return "unknown";
+}
+
+static void etnaviv_gem_object_info(struct drm_printer *p,
+				    unsigned int indent,
+				    const struct drm_gem_object *obj)
+{
+	const struct etnaviv_gem_object *etnaviv_obj;
+
+	etnaviv_obj = container_of(obj, struct etnaviv_gem_object, base);
+
+	drm_printf_indent(p, indent, "caching mode=%s\n",
+			  etnaviv_gem_obj_caching_info(etnaviv_obj->flags));
+	drm_printf_indent(p, indent, "active=%s\n",
+			  str_yes_no(is_active(etnaviv_obj)));
+	drm_printf_indent(p, indent, "vaddr=%p\n", etnaviv_obj->vaddr);
+}
+
 static const struct drm_gem_object_funcs etnaviv_gem_object_funcs = {
 	.free = etnaviv_gem_free_object,
+	.print_info = etnaviv_gem_object_info,
 	.pin = etnaviv_gem_prime_pin,
 	.unpin = etnaviv_gem_prime_unpin,
 	.get_sg_table = etnaviv_gem_prime_get_sg_table,
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.h b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
index a42d260cac2c..3f8fe19a77cc 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
@@ -68,7 +68,7 @@ struct etnaviv_gem_ops {
 	int (*mmap)(struct etnaviv_gem_object *, struct vm_area_struct *);
 };
 
-static inline bool is_active(struct etnaviv_gem_object *etnaviv_obj)
+static inline bool is_active(const struct etnaviv_gem_object *etnaviv_obj)
 {
 	return atomic_read(&etnaviv_obj->gpu_active) != 0;
 }
-- 
2.34.1