| /* |
| * include/linux/uio_driver.h |
| * |
| * Copyright(C) 2005, Benedikt Spranger <b.spranger@linutronix.de> |
| * Copyright(C) 2005, Thomas Gleixner <tglx@linutronix.de> |
| * Copyright(C) 2006, Hans J. Koch <hjk@linutronix.de> |
| * Copyright(C) 2006, Greg Kroah-Hartman <greg@kroah.com> |
| * |
| * Userspace IO driver. |
| * |
| * Licensed under the GPLv2 only. |
| */ |
| |
| #ifndef _UIO_DRIVER_H_ |
| #define _UIO_DRIVER_H_ |
| |
| #include <linux/module.h> |
| #include <linux/fs.h> |
| #include <linux/interrupt.h> |
| |
| struct uio_map; |
| |
| /** |
| * struct uio_mem - description of a UIO memory region |
| * @addr: address of the device's memory |
| * @size: size of IO |
| * @memtype: type of memory addr points to |
| * @internal_addr: ioremap-ped version of addr, for driver internal use |
| * @map: for use by the UIO core only. |
| */ |
| struct uio_mem { |
| unsigned long addr; |
| unsigned long size; |
| int memtype; |
| void __iomem *internal_addr; |
| struct uio_map *map; |
| }; |
| |
| #define MAX_UIO_MAPS 5 |
| |
| struct uio_portio; |
| |
| /** |
| * struct uio_port - description of a UIO port region |
| * @start: start of port region |
| * @size: size of port region |
| * @porttype: type of port (see UIO_PORT_* below) |
| * @portio: for use by the UIO core only. |
| */ |
| struct uio_port { |
| unsigned long start; |
| unsigned long size; |
| int porttype; |
| struct uio_portio *portio; |
| }; |
| |
| #define MAX_UIO_PORT_REGIONS 5 |
| |
| struct uio_device; |
| |
| /** |
| * struct uio_info - UIO device capabilities |
| * @uio_dev: the UIO device this info belongs to |
| * @name: device name |
| * @version: device driver version |
| * @mem: list of mappable memory regions, size==0 for end of list |
| * @port: list of port regions, size==0 for end of list |
| * @irq: interrupt number or UIO_IRQ_CUSTOM |
| * @irq_flags: flags for request_irq() |
| * @priv: optional private data |
| * @handler: the device's irq handler |
| * @mmap: mmap operation for this uio device |
| * @open: open operation for this uio device |
| * @release: release operation for this uio device |
| * @irqcontrol: disable/enable irqs when 0/1 is written to /dev/uioX |
| */ |
| struct uio_info { |
| struct uio_device *uio_dev; |
| char *name; |
| char *version; |
| struct uio_mem mem[MAX_UIO_MAPS]; |
| struct uio_port port[MAX_UIO_PORT_REGIONS]; |
| long irq; |
| unsigned long irq_flags; |
| void *priv; |
| irqreturn_t (*handler)(int irq, struct uio_info *dev_info); |
| int (*mmap)(struct uio_info *info, struct vm_area_struct *vma); |
| int (*open)(struct uio_info *info, struct inode *inode); |
| int (*release)(struct uio_info *info, struct inode *inode); |
| int (*irqcontrol)(struct uio_info *info, s32 irq_on); |
| }; |
| |
| extern int __must_check |
| __uio_register_device(struct module *owner, |
| struct device *parent, |
| struct uio_info *info); |
| static inline int __must_check |
| uio_register_device(struct device *parent, struct uio_info *info) |
| { |
| return __uio_register_device(THIS_MODULE, parent, info); |
| } |
| extern void uio_unregister_device(struct uio_info *info); |
| extern void uio_event_notify(struct uio_info *info); |
| |
| /* defines for uio_info->irq */ |
| #define UIO_IRQ_CUSTOM -1 |
| #define UIO_IRQ_NONE -2 |
| |
| /* defines for uio_mem->memtype */ |
| #define UIO_MEM_NONE 0 |
| #define UIO_MEM_PHYS 1 |
| #define UIO_MEM_LOGICAL 2 |
| #define UIO_MEM_VIRTUAL 3 |
| |
| /* defines for uio_port->porttype */ |
| #define UIO_PORT_NONE 0 |
| #define UIO_PORT_X86 1 |
| #define UIO_PORT_GPIO 2 |
| #define UIO_PORT_OTHER 3 |
| |
| #endif /* _LINUX_UIO_DRIVER_H_ */ |