/* * 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 <[email protected]> * Author: Gareth Hughes <[email protected]> * * 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 <linux/idr.h> #include <uapi/drm/drm.h> #include <drm/drm_prime.h> struct dma_fence; struct drm_file; struct drm_device; struct drm_printer; struct device; struct file; /* * 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. */ /* Note that the values of this enum are ABI (it determines * /dev/dri/renderD* numbers). * * Setting DRM_MINOR_ACCEL to 32 gives enough space for more drm minors to * be implemented before we hit any future */ enum drm_minor_type { … }; /** * struct drm_minor - DRM device minor structure * * This structure represents a DRM minor number for device nodes in /dev. * Entirely opaque to drivers and should never be inspected directly by drivers. * Drivers instead should only interact with &struct drm_file and of course * &struct drm_device, which is also where driver-private data and resources can * be attached to. */ struct drm_minor { … }; /** * struct drm_pending_event - Event queued up for userspace to read * * This represents a DRM event. Drivers can use this as a generic completion * mechanism, which supports kernel-internal &struct completion, &struct dma_fence * and also the DRM-specific &struct drm_event delivery mechanism. */ struct drm_pending_event { … }; /** * struct drm_file - DRM file private data * * This structure tracks DRM state per open file descriptor. */ struct drm_file { … }; /** * drm_is_primary_client - is this an open file of the primary node * @file_priv: DRM file * * Returns true if this is an open file of the primary node, i.e. * &drm_file.minor of @file_priv is a primary minor. * * See also the :ref:`section on primary nodes and authentication * <drm_primary_node>`. */ static inline bool drm_is_primary_client(const struct drm_file *file_priv) { … } /** * drm_is_render_client - is this an open file of the render node * @file_priv: DRM file * * Returns true if this is an open file of the render node, i.e. * &drm_file.minor of @file_priv is a render minor. * * See also the :ref:`section on render nodes <drm_render_node>`. */ static inline bool drm_is_render_client(const struct drm_file *file_priv) { … } /** * drm_is_accel_client - is this an open file of the compute acceleration node * @file_priv: DRM file * * Returns true if this is an open file of the compute acceleration node, i.e. * &drm_file.minor of @file_priv is a accel minor. * * See also :doc:`Introduction to compute accelerators subsystem * </accel/introduction>`. */ static inline bool drm_is_accel_client(const struct drm_file *file_priv) { … } void drm_file_update_pid(struct drm_file *); int drm_open(struct inode *inode, struct file *filp); int drm_open_helper(struct file *filp, struct drm_minor *minor); 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); int drm_release_noglobal(struct inode *inode, struct file *filp); __poll_t 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); void drm_send_event_timestamp_locked(struct drm_device *dev, struct drm_pending_event *e, ktime_t timestamp); /** * struct drm_memory_stats - GEM object stats associated * @shared: Total size of GEM objects shared between processes * @private: Total size of GEM objects * @resident: Total size of GEM objects backing pages * @purgeable: Total size of GEM objects that can be purged (resident and not active) * @active: Total size of GEM objects active on one or more engines * * Used by drm_print_memory_stats() */ struct drm_memory_stats { … }; enum drm_gem_object_status; void drm_print_memory_stats(struct drm_printer *p, const struct drm_memory_stats *stats, enum drm_gem_object_status supported_status, const char *region); void drm_show_memory_stats(struct drm_printer *p, struct drm_file *file); void drm_show_fdinfo(struct seq_file *m, struct file *f); struct file *mock_drm_getfile(struct drm_minor *minor, unsigned int flags); #endif /* _DRM_FILE_H_ */
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