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/* 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, \
.fop_flags = FOP_UNSIGNED_OFFSET
/**
* 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_device *dev);
void accel_debugfs_register(struct drm_device *dev);
#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_device *dev)
{
}
static inline void accel_debugfs_register(struct drm_device *dev)
{
}
#endif /* IS_ENABLED(CONFIG_DRM_ACCEL) */
#endif /* DRM_ACCEL_H_ */
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