| 1 | |
| 2 | *
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| 3 | * Copyright 2022 HabanaLabs, Ltd.
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| 4 | * All Rights Reserved.
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| 5 | *
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| 6 |
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| 7 |
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| 8 | #ifndef DRM_ACCEL_H_
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| 9 | #define DRM_ACCEL_H_
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| 10 |
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| 11 | #include <drm/drm_file.h>
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| 12 |
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| 13 | #define ACCEL_MAJOR 261
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| 14 | #define ACCEL_MAX_MINORS 256
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| 15 |
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| 16 | |
| 17 | * DRM_ACCEL_FOPS - Default drm accelerators file operations
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| 18 | *
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| 19 | * This macro provides a shorthand for setting the accelerator file ops in the
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| 20 | * &file_operations structure. If all you need are the default ops, use
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| 21 | * DEFINE_DRM_ACCEL_FOPS instead.
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| 22 |
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| 23 | #define DRM_ACCEL_FOPS \
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| 24 | .open = accel_open,\
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| 25 | .release = drm_release,\
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| 26 | .unlocked_ioctl = drm_ioctl,\
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| 27 | .compat_ioctl = drm_compat_ioctl,\
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| 28 | .poll = drm_poll,\
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| 29 | .read = drm_read,\
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| 30 | .llseek = noop_llseek, \
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| 31 | .mmap = drm_gem_mmap, \
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| 32 | .fop_flags = FOP_UNSIGNED_OFFSET
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| 33 |
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| 34 | |
| 35 | * DEFINE_DRM_ACCEL_FOPS() - macro to generate file operations for accelerators drivers
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| 36 | * @name: name for the generated structure
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| 37 | *
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| 38 | * This macro autogenerates a suitable &struct file_operations for accelerators based
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| 39 | * drivers, which can be assigned to &drm_driver.fops. Note that this structure
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| 40 | * cannot be shared between drivers, because it contains a reference to the
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| 41 | * current module using THIS_MODULE.
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| 42 | *
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| 43 | * Note that the declaration is already marked as static - if you need a
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| 44 | * non-static version of this you're probably doing it wrong and will break the
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| 45 | * THIS_MODULE reference by accident.
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| 46 |
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| 47 | #define DEFINE_DRM_ACCEL_FOPS(name) \
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| 48 | static const struct file_operations name = {\
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| 49 | .owner = THIS_MODULE,\
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| 50 | DRM_ACCEL_FOPS,\
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| 51 | }
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| 52 |
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| 53 | #if IS_ENABLED(CONFIG_DRM_ACCEL)
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| 54 |
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| 55 | extern struct xarray accel_minors_xa;
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| 56 |
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| 57 | void accel_core_exit(void);
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| 58 | int accel_core_init(void);
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| 59 | void accel_set_device_instance_params(struct device *kdev, int index);
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| 60 | int accel_open(struct inode *inode, struct file *filp);
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| 61 | void accel_debugfs_register(struct drm_device *dev);
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| 62 |
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| 63 | #else
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| 64 |
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| 65 | static inline void accel_core_exit(void)
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| 66 | {
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| 67 | }
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| 68 |
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| 69 | static inline int __init accel_core_init(void)
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| 70 | {
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| 71 |
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| 72 | return 0;
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| 73 | }
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| 74 |
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| 75 | static inline void accel_set_device_instance_params(struct device *kdev, int index)
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| 76 | {
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| 77 | }
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| 78 |
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| 79 | static inline void accel_debugfs_register(struct drm_device *dev)
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| 80 | {
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| 81 | }
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| 82 |
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| 83 | #endif
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| 84 |
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| 85 | #endif
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