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1/* SPDX-License-Identifier: GPL-2.02 *3 * Copyright 2022 HabanaLabs, Ltd.4 * All Rights Reserved.5 *6 */7 8#ifndef DRM_ACCEL_H_9#define DRM_ACCEL_H_10 11#include <drm/drm_file.h>12 13#define ACCEL_MAJOR 26114#define ACCEL_MAX_MINORS 25615 16/**17 * DRM_ACCEL_FOPS - Default drm accelerators file operations18 *19 * This macro provides a shorthand for setting the accelerator file ops in the20 * &file_operations structure. If all you need are the default ops, use21 * DEFINE_DRM_ACCEL_FOPS instead.22 */23#define DRM_ACCEL_FOPS \24 .open = accel_open,\25 .release = drm_release,\26 .unlocked_ioctl = drm_ioctl,\27 .compat_ioctl = drm_compat_ioctl,\28 .poll = drm_poll,\29 .read = drm_read,\30 .llseek = noop_llseek, \31 .mmap = drm_gem_mmap, \32 .fop_flags = FOP_UNSIGNED_OFFSET33 34/**35 * DEFINE_DRM_ACCEL_FOPS() - macro to generate file operations for accelerators drivers36 * @name: name for the generated structure37 *38 * This macro autogenerates a suitable &struct file_operations for accelerators based39 * drivers, which can be assigned to &drm_driver.fops. Note that this structure40 * cannot be shared between drivers, because it contains a reference to the41 * current module using THIS_MODULE.42 *43 * Note that the declaration is already marked as static - if you need a44 * non-static version of this you're probably doing it wrong and will break the45 * THIS_MODULE reference by accident.46 */47#define DEFINE_DRM_ACCEL_FOPS(name) \48 static const struct file_operations name = {\49 .owner = THIS_MODULE,\50 DRM_ACCEL_FOPS,\51 }52 53#if IS_ENABLED(CONFIG_DRM_ACCEL)54 55extern struct xarray accel_minors_xa;56 57void accel_core_exit(void);58int accel_core_init(void);59void accel_set_device_instance_params(struct device *kdev, int index);60int accel_open(struct inode *inode, struct file *filp);61void accel_debugfs_init(struct drm_device *dev);62void accel_debugfs_register(struct drm_device *dev);63 64#else65 66static inline void accel_core_exit(void)67{68}69 70static inline int __init accel_core_init(void)71{72 /* Return 0 to allow drm_core_init to complete successfully */73 return 0;74}75 76static inline void accel_set_device_instance_params(struct device *kdev, int index)77{78}79 80static inline void accel_debugfs_init(struct drm_device *dev)81{82}83 84static inline void accel_debugfs_register(struct drm_device *dev)85{86}87 88#endif /* IS_ENABLED(CONFIG_DRM_ACCEL) */89 90#endif /* DRM_ACCEL_H_ */91