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0b30d57aca
Instead of the per minor directories only create a single debugfs
directory for the whole device directly when the device is initialized.
For DRM devices each minor gets a symlink to the per device directory
for now until we can be sure that this isn't useful any more in any way.
Accel devices create only the per device directory and also drops the mid
layer callback to create driver specific files.
v2: cleanup accel component as well
v3: fix typo when debugfs is disabled
v4: call drm_debugfs_dev_fini() during release as well,
some kerneldoc typos fixed
v5: rebased and one more kerneldoc fix
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230829110115.3442-4-christian.koenig@amd.com
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
104 lines
2.5 KiB
C
104 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0
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*
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* Copyright 2022 HabanaLabs, Ltd.
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* All Rights Reserved.
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*
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*/
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#ifndef DRM_ACCEL_H_
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#define DRM_ACCEL_H_
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#include <drm/drm_file.h>
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#define ACCEL_MAJOR 261
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#define ACCEL_MAX_MINORS 256
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/**
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* DRM_ACCEL_FOPS - Default drm accelerators file operations
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*
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* This macro provides a shorthand for setting the accelerator file ops in the
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* &file_operations structure. If all you need are the default ops, use
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* DEFINE_DRM_ACCEL_FOPS instead.
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*/
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#define DRM_ACCEL_FOPS \
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.open = accel_open,\
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.release = drm_release,\
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.unlocked_ioctl = drm_ioctl,\
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.compat_ioctl = drm_compat_ioctl,\
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.poll = drm_poll,\
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.read = drm_read,\
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.llseek = noop_llseek, \
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.mmap = drm_gem_mmap
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/**
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* DEFINE_DRM_ACCEL_FOPS() - macro to generate file operations for accelerators drivers
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* @name: name for the generated structure
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*
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* This macro autogenerates a suitable &struct file_operations for accelerators based
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* drivers, which can be assigned to &drm_driver.fops. Note that this structure
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* cannot be shared between drivers, because it contains a reference to the
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* current module using THIS_MODULE.
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*
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* Note that the declaration is already marked as static - if you need a
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* non-static version of this you're probably doing it wrong and will break the
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* THIS_MODULE reference by accident.
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*/
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#define DEFINE_DRM_ACCEL_FOPS(name) \
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static const struct file_operations name = {\
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.owner = THIS_MODULE,\
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DRM_ACCEL_FOPS,\
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}
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#if IS_ENABLED(CONFIG_DRM_ACCEL)
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void accel_core_exit(void);
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int accel_core_init(void);
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void accel_minor_remove(int index);
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int accel_minor_alloc(void);
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void accel_minor_replace(struct drm_minor *minor, int index);
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void accel_set_device_instance_params(struct device *kdev, int index);
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int accel_open(struct inode *inode, struct file *filp);
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void accel_debugfs_init(struct drm_device *dev);
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void accel_debugfs_register(struct drm_device *dev);
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#else
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static inline void accel_core_exit(void)
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{
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}
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static inline int __init accel_core_init(void)
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{
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/* Return 0 to allow drm_core_init to complete successfully */
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return 0;
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}
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static inline void accel_minor_remove(int index)
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{
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}
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static inline int accel_minor_alloc(void)
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{
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return -EOPNOTSUPP;
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}
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static inline void accel_minor_replace(struct drm_minor *minor, int index)
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{
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}
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static inline void accel_set_device_instance_params(struct device *kdev, int index)
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{
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}
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static inline void accel_debugfs_init(struct drm_device *dev)
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{
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}
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static inline void accel_debugfs_register(struct drm_device *dev)
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{
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}
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#endif /* IS_ENABLED(CONFIG_DRM_ACCEL) */
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#endif /* DRM_ACCEL_H_ */
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