| /* Copyright (c) 2012-2014, 2017 The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| */ |
| #ifndef __KGSL_SYNC_H |
| #define __KGSL_SYNC_H |
| |
| #include "sync_file.h" |
| #include "kgsl_device.h" |
| |
| #define KGSL_TIMELINE_NAME_LEN 32 |
| |
| /** |
| * struct kgsl_sync_timeline - A sync timeline associated with a kgsl context |
| * @kref: Refcount to keep the struct alive until all its fences are released |
| * @name: String to describe this timeline |
| * @fence_context: Used by the fence driver to identify fences belonging to |
| * this context |
| * @child_list_head: List head for all fences on this timeline |
| * @lock: Spinlock to protect this timeline |
| * @last_timestamp: Last timestamp when signaling fences |
| * @device: kgsl device |
| * @context: kgsl context |
| */ |
| struct kgsl_sync_timeline { |
| struct kref kref; |
| char name[KGSL_TIMELINE_NAME_LEN]; |
| |
| u64 fence_context; |
| |
| struct list_head child_list_head; |
| |
| spinlock_t lock; |
| unsigned int last_timestamp; |
| struct kgsl_device *device; |
| struct kgsl_context *context; |
| }; |
| |
| /** |
| * struct kgsl_sync_fence - A struct containing a fence and other data |
| * associated with it |
| * @fence: The fence struct |
| * @sync_file: Pointer to the sync file |
| * @parent: Pointer to the kgsl sync timeline this fence is on |
| * @child_list: List of fences on the same timeline |
| * @context_id: kgsl context id |
| * @timestamp: Context timestamp that this fence is associated with |
| */ |
| struct kgsl_sync_fence { |
| struct fence fence; |
| struct sync_file *sync_file; |
| struct kgsl_sync_timeline *parent; |
| struct list_head child_list; |
| u32 context_id; |
| unsigned int timestamp; |
| }; |
| |
| /** |
| * struct kgsl_sync_fence_cb - Used for fence callbacks |
| * fence_cb: Fence callback struct |
| * fence: Pointer to the fence for which the callback is done |
| * priv: Private data for the callback |
| * func: Pointer to the kgsl function to call |
| */ |
| struct kgsl_sync_fence_cb { |
| struct fence_cb fence_cb; |
| struct fence *fence; |
| void *priv; |
| void (*func)(void *priv); |
| }; |
| |
| struct kgsl_syncsource; |
| |
| #if defined(CONFIG_SYNC_FILE) |
| int kgsl_add_fence_event(struct kgsl_device *device, |
| u32 context_id, u32 timestamp, void __user *data, int len, |
| struct kgsl_device_private *owner); |
| |
| int kgsl_sync_timeline_create(struct kgsl_context *context); |
| |
| void kgsl_sync_timeline_destroy(struct kgsl_context *context); |
| |
| void kgsl_sync_timeline_put(struct kgsl_sync_timeline *ktimeline); |
| |
| struct kgsl_sync_fence_cb *kgsl_sync_fence_async_wait(int fd, |
| void (*func)(void *priv), void *priv); |
| |
| int kgsl_sync_fence_async_cancel(struct kgsl_sync_fence_cb *kcb); |
| |
| long kgsl_ioctl_syncsource_create(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data); |
| long kgsl_ioctl_syncsource_destroy(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data); |
| long kgsl_ioctl_syncsource_create_fence(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data); |
| long kgsl_ioctl_syncsource_signal_fence(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data); |
| |
| void kgsl_syncsource_put(struct kgsl_syncsource *syncsource); |
| |
| void kgsl_syncsource_cleanup(struct kgsl_process_private *private, |
| struct kgsl_syncsource *syncsource); |
| |
| void kgsl_dump_fence(struct kgsl_sync_fence_cb *handle, |
| char *fence_str, int len); |
| |
| #else |
| static inline int kgsl_add_fence_event(struct kgsl_device *device, |
| u32 context_id, u32 timestamp, void __user *data, int len, |
| struct kgsl_device_private *owner) |
| { |
| return -EINVAL; |
| } |
| |
| static inline int kgsl_sync_timeline_create(struct kgsl_context *context) |
| { |
| context->ktimeline = NULL; |
| return 0; |
| } |
| |
| static inline void kgsl_sync_timeline_destroy(struct kgsl_context *context) |
| { |
| } |
| |
| static inline void kgsl_sync_timeline_put(struct kgsl_sync_timeline *ktimeline) |
| { |
| } |
| |
| static inline struct kgsl_sync_fence_cb *kgsl_sync_fence_async_wait(int fd, |
| void (*func)(void *priv), void *priv) |
| { |
| return NULL; |
| } |
| |
| static inline int |
| kgsl_sync_fence_async_cancel(struct kgsl_sync_fence_cb *kcb) |
| { |
| return 1; |
| } |
| |
| static inline long |
| kgsl_ioctl_syncsource_create(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| return -ENOIOCTLCMD; |
| } |
| |
| static inline long |
| kgsl_ioctl_syncsource_destroy(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| return -ENOIOCTLCMD; |
| } |
| |
| static inline long |
| kgsl_ioctl_syncsource_create_fence(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| return -ENOIOCTLCMD; |
| } |
| |
| static inline long |
| kgsl_ioctl_syncsource_signal_fence(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| return -ENOIOCTLCMD; |
| } |
| |
| static inline void kgsl_syncsource_put(struct kgsl_syncsource *syncsource) |
| { |
| |
| } |
| |
| static inline void kgsl_syncsource_cleanup(struct kgsl_process_private *private, |
| struct kgsl_syncsource *syncsource) |
| { |
| |
| } |
| |
| void kgsl_dump_fence(struct kgsl_sync_fence_cb *handle, |
| char *fence_str, int len) |
| { |
| } |
| |
| #endif /* CONFIG_SYNC_FILE */ |
| |
| #endif /* __KGSL_SYNC_H */ |