/* * 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 * Author: Gareth Hughes * * 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 #include #include #include 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; }; /** 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_ */