![David Kiliani](/assets/img/avatar_default.png)
Originally written by Guenter Gebhardt <g.gebhardt@meilhaus.de> and Krzysztof Gantzke <k.gantzke@meilhaus.de> This is the drv/lnx/mod directory of ME-IDS 1.2.9 tarball with some files from drv/lnx/include. Signed-off-by: David Kiliani <mail@davidkiliani.de> Cc: Guenter Gebhardt <g.gebhardt@meilhaus.de> Cc: Krzysztof Gantzke <k.gantzke@meilhaus.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
60 lines
2 KiB
C
60 lines
2 KiB
C
/**
|
|
* @file me8255.h
|
|
*
|
|
* @brief Meilhaus PIO 8255 implementation.
|
|
* @note Copyright (C) 2006 Meilhaus Electronic GmbH (support@meilhaus.de)
|
|
* @author Guenter Gebhardt
|
|
*/
|
|
|
|
#ifndef _ME8255_H_
|
|
#define _ME8255_H_
|
|
|
|
#include "mesubdevice.h"
|
|
#include "meslock.h"
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
/**
|
|
* @brief The 8255 subdevice class.
|
|
*/
|
|
typedef struct me8255_subdevice {
|
|
/* Inheritance */
|
|
me_subdevice_t base; /**< The subdevice base class. */
|
|
|
|
/* Attributes */
|
|
spinlock_t subdevice_lock; /**< Spin lock to protect the subdevice from concurrent access. */
|
|
|
|
int *ctrl_reg_mirror; /**< Pointer to mirror of the control register. */
|
|
spinlock_t *ctrl_reg_lock; /**< Spin lock to protect #ctrl_reg and #ctrl_reg_mirror from concurrent access. */
|
|
|
|
uint32_t device_id; /**< The PCI device id of the device holding the 8255 chip. */
|
|
int me8255_idx; /**< The index of the 8255 chip on the device. */
|
|
int dio_idx; /**< The index of the DIO port on the 8255 chip. */
|
|
|
|
unsigned long port_reg; /**< Register to read or write a value from or to the port respectively. */
|
|
unsigned long ctrl_reg; /**< Register to configure the 8255 modes. */
|
|
} me8255_subdevice_t;
|
|
|
|
/**
|
|
* @brief The constructor to generate a 8255 instance.
|
|
*
|
|
* @param device_id The kind of Meilhaus device holding the 8255.
|
|
* @param reg_base The register base address of the device as returned by the PCI BIOS.
|
|
* @param me8255_idx The index of the 8255 chip on the Meilhaus device.
|
|
* @param dio_idx The index of the counter inside a 8255 chip.
|
|
* @param ctr_reg_mirror Pointer to mirror of control register.
|
|
* @param ctrl_reg_lock Pointer to spin lock protecting the 8255 control register and #ctrl_reg_mirror from concurrent access.
|
|
*
|
|
* @return Pointer to new instance on success.\n
|
|
* NULL on error.
|
|
*/
|
|
me8255_subdevice_t *me8255_constructor(uint32_t device_id,
|
|
uint32_t reg_base,
|
|
unsigned int me8255_idx,
|
|
unsigned int dio_idx,
|
|
int *ctrl_reg_mirror,
|
|
spinlock_t * ctrl_reg_lock);
|
|
|
|
#endif
|
|
#endif
|