From 45d58b40292b16ab847497dcd299e315a2ad7956 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Noralf=20Tr=C3=B8nnes?= Date: Tue, 7 Nov 2017 20:13:40 +0100 Subject: [PATCH] drm/framebuffer: Add framebuffer debugfs file MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Add debugfs file that dumps info about the framebuffers and its planes. Also dump info about any connected gem object(s). Reviewed-by: Daniel Vetter Signed-off-by: Noralf Trønnes Reviewed-by: Laurent Pinchart Link: https://patchwork.freedesktop.org/patch/msgid/20171107191348.17555-5-noralf@tronnes.org --- drivers/gpu/drm/drm_debugfs.c | 6 ++++ drivers/gpu/drm/drm_framebuffer.c | 59 +++++++++++++++++++++++++++++++ drivers/gpu/drm/drm_gem.c | 17 +++++++++ drivers/gpu/drm/drm_internal.h | 7 ++++ include/drm/drm_drv.h | 15 ++++++++ 5 files changed, 104 insertions(+) diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index c1807d5754b2..550f29de6c1f 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -158,6 +158,12 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id, } } + ret = drm_framebuffer_debugfs_init(minor); + if (ret) { + DRM_ERROR("Failed to create framebuffer debugfs file\n"); + return ret; + } + if (dev->driver->debugfs_init) { ret = dev->driver->debugfs_init(minor); if (ret) { diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c index 2305e7800b45..0153000373ae 100644 --- a/drivers/gpu/drm/drm_framebuffer.c +++ b/drivers/gpu/drm/drm_framebuffer.c @@ -25,7 +25,9 @@ #include #include #include +#include +#include "drm_internal.h" #include "drm_crtc_internal.h" /** @@ -967,3 +969,60 @@ int drm_framebuffer_plane_height(int height, return fb_plane_height(height, fb->format, plane); } EXPORT_SYMBOL(drm_framebuffer_plane_height); + +void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent, + const struct drm_framebuffer *fb) +{ + struct drm_format_name_buf format_name; + unsigned int i; + + drm_printf_indent(p, indent, "refcount=%u\n", + drm_framebuffer_read_refcount(fb)); + drm_printf_indent(p, indent, "format=%s\n", + drm_get_format_name(fb->format->format, &format_name)); + drm_printf_indent(p, indent, "modifier=0x%llx\n", fb->modifier); + drm_printf_indent(p, indent, "size=%ux%u\n", fb->width, fb->height); + drm_printf_indent(p, indent, "layers:\n"); + + for (i = 0; i < fb->format->num_planes; i++) { + drm_printf_indent(p, indent + 1, "size[%u]=%dx%d\n", i, + drm_framebuffer_plane_width(fb->width, fb, i), + drm_framebuffer_plane_height(fb->height, fb, i)); + drm_printf_indent(p, indent + 1, "pitch[%u]=%u\n", i, fb->pitches[i]); + drm_printf_indent(p, indent + 1, "offset[%u]=%u\n", i, fb->offsets[i]); + drm_printf_indent(p, indent + 1, "obj[%u]:%s\n", i, + fb->obj[i] ? "" : "(null)"); + if (fb->obj[i]) + drm_gem_print_info(p, indent + 2, fb->obj[i]); + } +} + +#ifdef CONFIG_DEBUG_FS +static int drm_framebuffer_info(struct seq_file *m, void *data) +{ + struct drm_info_node *node = m->private; + struct drm_device *dev = node->minor->dev; + struct drm_printer p = drm_seq_file_printer(m); + struct drm_framebuffer *fb; + + mutex_lock(&dev->mode_config.fb_lock); + drm_for_each_fb(fb, dev) { + drm_printf(&p, "framebuffer[%u]:\n", fb->base.id); + drm_framebuffer_print_info(&p, 1, fb); + } + mutex_unlock(&dev->mode_config.fb_lock); + + return 0; +} + +static const struct drm_info_list drm_framebuffer_debugfs_list[] = { + { "framebuffer", drm_framebuffer_info, 0 }, +}; + +int drm_framebuffer_debugfs_init(struct drm_minor *minor) +{ + return drm_debugfs_create_files(drm_framebuffer_debugfs_list, + ARRAY_SIZE(drm_framebuffer_debugfs_list), + minor->debugfs_root, minor); +} +#endif diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c index 4c84b23d37cc..01f8d9481211 100644 --- a/drivers/gpu/drm/drm_gem.c +++ b/drivers/gpu/drm/drm_gem.c @@ -40,6 +40,7 @@ #include #include #include +#include #include "drm_internal.h" /** @file drm_gem.c @@ -1040,3 +1041,19 @@ int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) return ret; } EXPORT_SYMBOL(drm_gem_mmap); + +void drm_gem_print_info(struct drm_printer *p, unsigned int indent, + const struct drm_gem_object *obj) +{ + drm_printf_indent(p, indent, "name=%d\n", obj->name); + drm_printf_indent(p, indent, "refcount=%u\n", + kref_read(&obj->refcount)); + drm_printf_indent(p, indent, "start=%08lx\n", + drm_vma_node_start(&obj->vma_node)); + drm_printf_indent(p, indent, "size=%zu\n", obj->size); + drm_printf_indent(p, indent, "imported=%s\n", + obj->import_attach ? "yes" : "no"); + + if (obj->dev->driver->gem_print_info) + obj->dev->driver->gem_print_info(p, indent, obj); +} diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h index fbc3f308fa19..430ce3fe4f3b 100644 --- a/drivers/gpu/drm/drm_internal.h +++ b/drivers/gpu/drm/drm_internal.h @@ -106,6 +106,8 @@ int drm_gem_open_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); void drm_gem_open(struct drm_device *dev, struct drm_file *file_private); void drm_gem_release(struct drm_device *dev, struct drm_file *file_private); +void drm_gem_print_info(struct drm_printer *p, unsigned int indent, + const struct drm_gem_object *obj); /* drm_debugfs.c drm_debugfs_crc.c */ #if defined(CONFIG_DEBUG_FS) @@ -173,3 +175,8 @@ int drm_syncobj_reset_ioctl(struct drm_device *dev, void *data, struct drm_file *file_private); int drm_syncobj_signal_ioctl(struct drm_device *dev, void *data, struct drm_file *file_private); + +/* drm_framebuffer.c */ +void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent, + const struct drm_framebuffer *fb); +int drm_framebuffer_debugfs_init(struct drm_minor *minor); diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h index 0e90ef24214b..1536e5bddeaf 100644 --- a/include/drm/drm_drv.h +++ b/include/drm/drm_drv.h @@ -39,6 +39,7 @@ struct drm_minor; struct dma_buf_attachment; struct drm_display_mode; struct drm_mode_create_dumb; +struct drm_printer; /* driver capabilities and requirements mask */ #define DRIVER_USE_AGP 0x1 @@ -428,6 +429,20 @@ struct drm_driver { */ void (*gem_close_object) (struct drm_gem_object *, struct drm_file *); + /** + * @gem_print_info: + * + * If driver subclasses struct &drm_gem_object, it can implement this + * optional hook for printing additional driver specific info. + * + * drm_printf_indent() should be used in the callback passing it the + * indent argument. + * + * This callback is called from drm_gem_print_info(). + */ + void (*gem_print_info)(struct drm_printer *p, unsigned int indent, + const struct drm_gem_object *obj); + /** * @gem_create_object: constructor for gem objects * -- 2.30.2