drm: Extract drm_file.h

I'm torn on whether drm_minor really should be here or somewhere else.
Maybe with more clarity after untangling drmP.h more this is easier to
decide, for now I've put a FIXME comment right next to it. Right now
we need struct drm_minor for the inline drm_file type helpers, and so
it does kinda make sense to have them here.

Next patch will kerneldoc-ify the entire pile.

Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170308141257.12119-10-daniel.vetter@ffwll.ch

1 files changed, 172 insertions, 0 deletions

diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
new file mode 100644
index 000000000000..d1a25cc17fd1
--- /dev/null
+++ b/include/drm/drm_file.h
@@ -0,0 +1,172 @@
+/*
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * Copyright (c) 2009-2010, Code Aurora Forum.
+ * All rights reserved.
+ *
+ * Author: Rickard E. (Rik) Faith <faith@valinux.com>
+ * Author: Gareth Hughes <gareth@valinux.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _DRM_FILE_H_
+#define _DRM_FILE_H_
+
+#include <linux/types.h>
+#include <linux/completion.h>
+
+#include <uapi/drm/drm.h>
+
+#include <drm/drm_prime.h>
+
+struct dma_fence;
+struct drm_file;
+struct drm_device;
+
+/*
+ * FIXME: Not sure we want to have drm_minor here in the end, but to avoid
+ * header include loops we need it here for now.
+ */
+enum drm_minor_type {
+	DRM_MINOR_PRIMARY,
+	DRM_MINOR_CONTROL,
+	DRM_MINOR_RENDER,
+};
+
+/**
+ * DRM minor structure. This structure represents a drm minor number.
+ */
+struct drm_minor {
+	int index;			/**< Minor device number */
+	int type;                       /**< Control or render */
+	struct device *kdev;		/**< Linux device */
+	struct drm_device *dev;
+
+	struct dentry *debugfs_root;
+
+	struct list_head debugfs_list;
+	struct mutex debugfs_lock; /* Protects debugfs_list. */
+};
+
+/* Event queued up for userspace to read */
+struct drm_pending_event {
+	struct completion *completion;
+	void (*completion_release)(struct completion *completion);
+	struct drm_event *event;
+	struct dma_fence *fence;
+	struct list_head link;
+	struct list_head pending_link;
+	struct drm_file *file_priv;
+	pid_t pid; /* pid of requester, no guarantee it's valid by the time
+		      we deliver the event, for tracing only */
+};
+
+/** File private data */
+struct drm_file {
+	unsigned authenticated :1;
+	/* true when the client has asked us to expose stereo 3D mode flags */
+	unsigned stereo_allowed :1;
+	/*
+	 * true if client understands CRTC primary planes and cursor planes
+	 * in the plane list
+	 */
+	unsigned universal_planes:1;
+	/* true if client understands atomic properties */
+	unsigned atomic:1;
+	/*
+	 * This client is the creator of @master.
+	 * Protected by struct drm_device::master_mutex.
+	 */
+	unsigned is_master:1;
+
+	struct pid *pid;
+	drm_magic_t magic;
+	struct list_head lhead;
+	struct drm_minor *minor;
+	unsigned long lock_count;
+
+	/** Mapping of mm object handles to object pointers. */
+	struct idr object_idr;
+	/** Lock for synchronization of access to object_idr. */
+	spinlock_t table_lock;
+
+	struct file *filp;
+	void *driver_priv;
+
+	struct drm_master *master; /* master this node is currently associated with
+				      N.B. not always dev->master */
+	/**
+	 * fbs - List of framebuffers associated with this file.
+	 *
+	 * Protected by fbs_lock. Note that the fbs list holds a reference on
+	 * the fb object to prevent it from untimely disappearing.
+	 */
+	struct list_head fbs;
+	struct mutex fbs_lock;
+
+	/** User-created blob properties; this retains a reference on the
+	 *  property. */
+	struct list_head blobs;
+
+	wait_queue_head_t event_wait;
+	struct list_head pending_event_list;
+	struct list_head event_list;
+	int event_space;
+
+	struct mutex event_read_lock;
+
+	struct drm_prime_file_private prime;
+};
+
+static inline bool drm_is_render_client(const struct drm_file *file_priv)
+{
+	return file_priv->minor->type == DRM_MINOR_RENDER;
+}
+
+static inline bool drm_is_control_client(const struct drm_file *file_priv)
+{
+	return file_priv->minor->type == DRM_MINOR_CONTROL;
+}
+
+static inline bool drm_is_primary_client(const struct drm_file *file_priv)
+{
+	return file_priv->minor->type == DRM_MINOR_PRIMARY;
+}
+
+int drm_open(struct inode *inode, struct file *filp);
+ssize_t drm_read(struct file *filp, char __user *buffer,
+		 size_t count, loff_t *offset);
+int drm_release(struct inode *inode, struct file *filp);
+unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
+int drm_event_reserve_init_locked(struct drm_device *dev,
+				  struct drm_file *file_priv,
+				  struct drm_pending_event *p,
+				  struct drm_event *e);
+int drm_event_reserve_init(struct drm_device *dev,
+			   struct drm_file *file_priv,
+			   struct drm_pending_event *p,
+			   struct drm_event *e);
+void drm_event_cancel_free(struct drm_device *dev,
+			   struct drm_pending_event *p);
+void drm_send_event_locked(struct drm_device *dev, struct drm_pending_event *e);
+void drm_send_event(struct drm_device *dev, struct drm_pending_event *e);
+
+#endif /* _DRM_FILE_H_ */