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  *   ˆl–Ü4ý( ©³( 	Å€fàB¦-ÿÄ367_†I|¥+ÈÇ o    /* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_GENERIC_PARAM_H
#define __ASM_GENERIC_PARAM_H

#include <uapi/asm-generic/param.h>

# undef HZ
# define HZ		CONFIG_HZ	/* Internal kernel timer frequency */
# define USER_HZ	100		/* some user interfaces are */
# define CLOCKS_PER_SEC	(USER_HZ)       /* in "ticks" like times() */
#endif /* __ASM_GENERIC_PARAM_H */
     ˆ¿Å„í´×¾ÈÇ ?÷     /*
 * Any part of this program may be used in documents licensed under
 * the GNU Free Documentation License, Version 1.1 or any later version
 * published by the Free Software Foundation.
 */
#ifndef _PARPORT_H_
#define _PARPORT_H_


#include <linux/jiffies.h>
#include <linux/proc_fs.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
#include <linux/irqreturn.h>
#include <linux/semaphore.h>
#include <linux/device.h>
#include <asm/ptrace.h>
#include <uapi/linux/parport.h>

/* Define this later. */
struct parport;
struct pardevice;

struct pc_parport_state {
	unsigned int ctr;
	unsigned int ecr;
};

struct ax_parport_state {
	unsigned int ctr;
	unsigned int ecr;
	unsigned int dcsr;
};

/* used by both parport_amiga and parport_mfc3 */
struct amiga_parport_state {
       unsigned char data;     /* ciaa.prb */
       unsigned char datadir;  /* ciaa.ddrb */
       unsigned char status;   /* ciab.pra & 7 */
       unsigned char statusdir;/* ciab.ddrb & 7 */
};

struct ax88796_parport_state {
	unsigned char cpr;
};

struct ip32_parport_state {
	unsigned int dcr;
	unsigned int ecr;
};

struct parport_state {
	union {
		struct pc_parport_state pc;
		/* ARC has no state. */
		struct ax_parport_state ax;
		struct amiga_parport_state amiga;
		struct ax88796_parport_state ax88796;
		/* Atari has not state. */
		struct ip32_parport_state ip32;
		void *misc; 
	} u;
};

struct parport_operations {
	/* IBM PC-style virtual registers. */
	void (*write_data)(struct parport *, unsigned char);
	unsigned char (*read_data)(struct parport *);

	void (*write_control)(struct parport *, unsigned char);
	unsigned char (*read_control)(struct parport *);
	unsigned char (*frob_control)(struct parport *, unsigned char mask,
				      unsigned char val);

	unsigned char (*read_status)(struct parport *);

	/* IRQs. */
	void (*enable_irq)(struct parport *);
	void (*disable_irq)(struct parport *);

	/* Data direction. */
	void (*data_forward) (struct parport *);
	void (*data_reverse) (struct parport *);

	/* For core parport code. */
	void (*init_state)(struct pardevice *, struct parport_state *);
	void (*save_state)(struct parport *, struct parport_state *);
	void (*restore_state)(struct parport *, struct parport_state *);

	/* Block read/write */
	size_t (*epp_write_data) (struct parport *port, const void *buf,
				  size_t len, int flags);
	size_t (*epp_read_data) (struct parport *port, void *buf, size_t len,
				 int flags);
	size_t (*epp_write_addr) (struct parport *port, const void *buf,
				  size_t len, int flags);
	size_t (*epp_read_addr) (struct parport *port, void *buf, size_t len,
				 int flags);

	size_t (*ecp_write_data) (struct parport *port, const void *buf,
				  size_t len, int flags);
	size_t (*ecp_read_data) (struct parport *port, void *buf, size_t len,
				 int flags);
	size_t (*ecp_write_addr) (struct parport *port, const void *buf,
				  size_t len, int flags);

	size_t (*compat_write_data) (struct parport *port, const void *buf,
				     size_t len, int flags);
	size_t (*nibble_read_data) (struct parport *port, void *buf,
				    size_t len, int flags);
	size_t (*byte_read_data) (struct parport *port, void *buf,
				  size_t len, int flags);
	struct module *owner;
};

struct parport_device_info {
	parport_device_class class;
	const char *class_name;
	const char *mfr;
	const char *model;
	const char *cmdset;
	const char *description;
};

/* Each device can have two callback functions:
 *  1) a preemption function, called by the resource manager to request
 *     that the driver relinquish control of the port.  Th