#include <linux/fs.h>
#include <linux/interrupt.h>

Macros
: name of the memory region for identification
struct uio_mem - description of a UIO memory region : address of the device's memory (phys_addr is used since addr can be logical, virtual, or physical & phys_addr_t should always be large enough to handle any of the address types) : size of IO : type of memory addr points to : ioremap-ped version of addr, for driver internal use : for use by the UIO core only.
#define	MAX_UIO_MAPS 5

: name of the port region for identification
struct uio_port - description of a UIO port region : start of port region : size of port region : type of port (see UIO_PORT_* below) : for use by the UIO core only.
#define	MAX_UIO_PORT_REGIONS 5

: device name
struct uio_info - UIO device capabilities : the UIO device this info belongs to Version : device driver version : list of mappable memory regions, size==0 for end of list : list of port regions, size==0 for end of list : interrupt number or UIO_IRQ_CUSTOM : flags for request_irq() : optional private data : the device's irq handler : mmap operation for this uio device : open operation for this uio device : release operation for this uio device : disable/enable irqs when 0/1 is written to /dev/uioX
#define	uio_register_device(parent, info) __uio_register_device(THIS_MODULE, parent, info)

#define	UIO_IRQ_CUSTOM -1

#define	UIO_IRQ_NONE 0

#define	UIO_MEM_NONE 0

#define	UIO_MEM_PHYS 1

#define	UIO_MEM_LOGICAL 2

#define	UIO_MEM_VIRTUAL 3

#define	UIO_PORT_NONE 0

#define	UIO_PORT_X86 1

#define	UIO_PORT_GPIO 2

#define	UIO_PORT_OTHER 3

int __must_check	__uio_register_device (struct module owner, struct device parent, struct uio_info *info)

void	uio_unregister_device (struct uio_info *info)

void	uio_event_notify (struct uio_info *info)

Macro Definition Documentation

#define MAX_UIO_MAPS 5

Definition at line 44 of file uio_driver.h.

#define MAX_UIO_PORT_REGIONS 5

Definition at line 64 of file uio_driver.h.

#define UIO_IRQ_CUSTOM -1

Definition at line 113 of file uio_driver.h.

#define UIO_IRQ_NONE 0

Definition at line 114 of file uio_driver.h.

#define UIO_MEM_LOGICAL 2

Definition at line 119 of file uio_driver.h.

#define UIO_MEM_NONE 0

Definition at line 117 of file uio_driver.h.

#define UIO_MEM_PHYS 1

Definition at line 118 of file uio_driver.h.

#define UIO_MEM_VIRTUAL 3

Definition at line 120 of file uio_driver.h.

#define UIO_PORT_GPIO 2

Definition at line 125 of file uio_driver.h.

#define UIO_PORT_NONE 0

Definition at line 123 of file uio_driver.h.

#define UIO_PORT_OTHER 3

Definition at line 126 of file uio_driver.h.

#define UIO_PORT_X86 1

Definition at line 124 of file uio_driver.h.

#define uio_register_device	(	parent,
		info
	)	__uio_register_device(THIS_MODULE, parent, info)

Definition at line 106 of file uio_driver.h.

Function Documentation

int __must_check __uio_register_device	(	struct module *	owner,
		struct device *	parent,
		struct uio_info *	info
	)

uio_register_device - register a new userspace IO device : module that creates the new device : parent device : UIO device capabilities

returns zero on success or a negative error code.

Definition at line 801 of file uio.c.

void uio_event_notify ( struct uio_info * info )

uio_event_notify - trigger an interrupt event : UIO device capabilities

Definition at line 407 of file uio.c.

void uio_unregister_device ( struct uio_info * info )

uio_unregister_device - unregister a industrial IO device : UIO device capabilities

Definition at line 870 of file uio.c.