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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/linux/uio_driver.h
2 * include/linux/uio_driver.h
4 * Copyright(C) 2005, Benedikt Spranger <b.spranger@linutronix.de>
5 * Copyright(C) 2005, Thomas Gleixner <tglx@linutronix.de>
6 * Copyright(C) 2006, Hans J. Koch <hjk@linutronix.de>
7 * Copyright(C) 2006, Greg Kroah-Hartman <greg@kroah.com>
11 * Licensed under the GPLv2 only.
14 #ifndef _UIO_DRIVER_H_
15 #define _UIO_DRIVER_H_
17 #include <linux/module.h>
19 #include <linux/interrupt.h>
24 * struct uio_mem - description of a UIO memory region
25 * @addr: address of the device's memory
27 * @memtype: type of memory addr points to
28 * @internal_addr: ioremap-ped version of addr, for driver internal use
29 * @map: for use by the UIO core only.
35 void __iomem
*internal_addr
;
39 #define MAX_UIO_MAPS 5
44 * struct uio_port - description of a UIO port region
45 * @start: start of port region
46 * @size: size of port region
47 * @porttype: type of port (see UIO_PORT_* below)
48 * @portio: for use by the UIO core only.
54 struct uio_portio
*portio
;
57 #define MAX_UIO_PORT_REGIONS 5
62 * struct uio_info - UIO device capabilities
63 * @uio_dev: the UIO device this info belongs to
65 * @version: device driver version
66 * @mem: list of mappable memory regions, size==0 for end of list
67 * @port: list of port regions, size==0 for end of list
68 * @irq: interrupt number or UIO_IRQ_CUSTOM
69 * @irq_flags: flags for request_irq()
70 * @priv: optional private data
71 * @handler: the device's irq handler
72 * @mmap: mmap operation for this uio device
73 * @open: open operation for this uio device
74 * @release: release operation for this uio device
75 * @irqcontrol: disable/enable irqs when 0/1 is written to /dev/uioX
78 struct uio_device
*uio_dev
;
81 struct uio_mem mem
[MAX_UIO_MAPS
];
82 struct uio_port port
[MAX_UIO_PORT_REGIONS
];
84 unsigned long irq_flags
;
86 irqreturn_t (*handler
)(int irq
, struct uio_info
*dev_info
);
87 int (*mmap
)(struct uio_info
*info
, struct vm_area_struct
*vma
);
88 int (*open
)(struct uio_info
*info
, struct inode
*inode
);
89 int (*release
)(struct uio_info
*info
, struct inode
*inode
);
90 int (*irqcontrol
)(struct uio_info
*info
, s32 irq_on
);
93 extern int __must_check
94 __uio_register_device(struct module
*owner
,
95 struct device
*parent
,
96 struct uio_info
*info
);
97 static inline int __must_check
98 uio_register_device(struct device
*parent
, struct uio_info
*info
)
100 return __uio_register_device(THIS_MODULE
, parent
, info
);
102 extern void uio_unregister_device(struct uio_info
*info
);
103 extern void uio_event_notify(struct uio_info
*info
);
105 /* defines for uio_info->irq */
106 #define UIO_IRQ_CUSTOM -1
107 #define UIO_IRQ_NONE -2
109 /* defines for uio_mem->memtype */
110 #define UIO_MEM_NONE 0
111 #define UIO_MEM_PHYS 1
112 #define UIO_MEM_LOGICAL 2
113 #define UIO_MEM_VIRTUAL 3
115 /* defines for uio_port->porttype */
116 #define UIO_PORT_NONE 0
117 #define UIO_PORT_X86 1
118 #define UIO_PORT_GPIO 2
119 #define UIO_PORT_OTHER 3
121 #endif /* _LINUX_UIO_DRIVER_H_ */