mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 12:28:41 +08:00
e868cc591e
In reviewing the ivpu driver, DEFINE_DRM_ACCEL_FOPS could have been used if DRM_ACCEL_FOPS defined .mmap to be drm_gem_mmap. Lets add that since accel drivers are a variant of drm drivers, modern drm drivers are expected to use GEM, and mmap() is a common operation that is expected to be heavily used in accel drivers thus the common accel driver should be able to just use DEFINE_DRM_ACCEL_FOPS() for convenience. Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0
|
|
*
|
|
* Copyright 2022 HabanaLabs, Ltd.
|
|
* All Rights Reserved.
|
|
*
|
|
*/
|
|
|
|
#ifndef DRM_ACCEL_H_
|
|
#define DRM_ACCEL_H_
|
|
|
|
#include <drm/drm_file.h>
|
|
|
|
#define ACCEL_MAJOR 261
|
|
#define ACCEL_MAX_MINORS 256
|
|
|
|
/**
|
|
* DRM_ACCEL_FOPS - Default drm accelerators file operations
|
|
*
|
|
* This macro provides a shorthand for setting the accelerator file ops in the
|
|
* &file_operations structure. If all you need are the default ops, use
|
|
* DEFINE_DRM_ACCEL_FOPS instead.
|
|
*/
|
|
#define DRM_ACCEL_FOPS \
|
|
.open = accel_open,\
|
|
.release = drm_release,\
|
|
.unlocked_ioctl = drm_ioctl,\
|
|
.compat_ioctl = drm_compat_ioctl,\
|
|
.poll = drm_poll,\
|
|
.read = drm_read,\
|
|
.llseek = noop_llseek, \
|
|
.mmap = drm_gem_mmap
|
|
|
|
/**
|
|
* DEFINE_DRM_ACCEL_FOPS() - macro to generate file operations for accelerators drivers
|
|
* @name: name for the generated structure
|
|
*
|
|
* This macro autogenerates a suitable &struct file_operations for accelerators based
|
|
* drivers, which can be assigned to &drm_driver.fops. Note that this structure
|
|
* cannot be shared between drivers, because it contains a reference to the
|
|
* current module using THIS_MODULE.
|
|
*
|
|
* Note that the declaration is already marked as static - if you need a
|
|
* non-static version of this you're probably doing it wrong and will break the
|
|
* THIS_MODULE reference by accident.
|
|
*/
|
|
#define DEFINE_DRM_ACCEL_FOPS(name) \
|
|
static const struct file_operations name = {\
|
|
.owner = THIS_MODULE,\
|
|
DRM_ACCEL_FOPS,\
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_ACCEL)
|
|
|
|
void accel_core_exit(void);
|
|
int accel_core_init(void);
|
|
void accel_minor_remove(int index);
|
|
int accel_minor_alloc(void);
|
|
void accel_minor_replace(struct drm_minor *minor, int index);
|
|
void accel_set_device_instance_params(struct device *kdev, int index);
|
|
int accel_open(struct inode *inode, struct file *filp);
|
|
void accel_debugfs_init(struct drm_minor *minor, int minor_id);
|
|
|
|
#else
|
|
|
|
static inline void accel_core_exit(void)
|
|
{
|
|
}
|
|
|
|
static inline int __init accel_core_init(void)
|
|
{
|
|
/* Return 0 to allow drm_core_init to complete successfully */
|
|
return 0;
|
|
}
|
|
|
|
static inline void accel_minor_remove(int index)
|
|
{
|
|
}
|
|
|
|
static inline int accel_minor_alloc(void)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline void accel_minor_replace(struct drm_minor *minor, int index)
|
|
{
|
|
}
|
|
|
|
static inline void accel_set_device_instance_params(struct device *kdev, int index)
|
|
{
|
|
}
|
|
|
|
static inline void accel_debugfs_init(struct drm_minor *minor, int minor_id)
|
|
{
|
|
}
|
|
|
|
#endif /* IS_ENABLED(CONFIG_DRM_ACCEL) */
|
|
|
|
#endif /* DRM_ACCEL_H_ */
|