MAJOR=4
MINOR=65
DEVNAME=ttyS1
  *   ˆl–Ü4ý( ©³( 	Å€fàB¦-ÿÁƒuÇŸ_†I|¥+ÁÀ 	    /* SPDX-License-Identifier: GPL-2.0-only */
/*
 * ds.h -- 16-bit PCMCIA core support
 *
 * The initial developer of the original code is David A. Hinds
 * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
 * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
 *
 * (C) 1999		David A. Hinds
 * (C) 2003 - 2008	Dominik Brodowski
 */

#ifndef _LINUX_DS_H
#define _LINUX_DS_H

#ifdef __KERNEL__
#include <linux/mod_devicetable.h>
#endif

#include <pcmcia/device_id.h>

#ifdef __KERNEL__
#include <linux/device.h>
#include <linux/interrupt.h>
#include <pcmcia/ss.h>
#include <linux/atomic.h>


/*
 * PCMCIA device drivers (16-bit cards only; 32-bit cards require CardBus
 * a.k.a. PCI drivers
 */
struct pcmcia_socket;
struct pcmcia_device;
struct config_t;
struct net_device;

/* dynamic device IDs for PCMCIA device drivers. See
 * Documentation/pcmcia/driver.rst for details.
*/
struct pcmcia_dynids {
	struct mutex		lock;
	struct list_head	list;
};

struct pcmcia_driver {
	const char		*name;

	int (*probe)		(struct pcmcia_device *dev);
	void (*remove)		(struct pcmcia_device *dev);

	int (*suspend)		(struct pcmcia_device *dev);
	int (*resume)		(struct pcmcia_device *dev);

	struct module		*owner;
	const struct pcmcia_device_id	*id_table;
	struct device_driver	drv;
	struct pcmcia_dynids	dynids;
};

/* driver registration */
int pcmcia_register_driver(struct pcmcia_driver *driver);
void pcmcia_unregister_driver(struct pcmcia_driver *driver);

/**
 * module_pcmcia_driver() - Helper macro for registering a pcmcia driver
 * @__pcmcia_driver: pcmcia_driver struct
 *
 * Helper macro for pcmcia drivers which do not do anything special in module
 * init/exit. This eliminates a lot of boilerplate. Each module may only use
 * this macro once, and calling it replaces module_init() and module_exit().
 */
#define module_pcmcia_driver(__pcmcia_driver) \
	module_driver(__pcmcia_driver, pcmcia_register_driver, \
			pcmcia_unregister_driver)

/* for struct resource * array embedded in struct pcmcia_device */
enum {
	PCMCIA_IOPORT_0,
	PCMCIA_IOPORT_1,
	PCMCIA_IOMEM_0,
	PCMCIA_IOMEM_1,
	PCMCIA_IOMEM_2,
	PCMCIA_IOMEM_3,
	PCMCIA_NUM_RESOURCES,
};

struct pcmcia_device {
	/* the socket and the device_no [for multifunction devices]
	   uniquely define a pcmcia_device */
	struct pcmcia_socket	*socket;

	char			*devname;

	u8			device_no;

	/* the hardware "function" device; certain subdevices can
	 * share one hardware "function" device. */
	u8			func;
	struct config_t		*function_config;

	struct list_head	socket_device_list;

	/* device setup */
	unsigned int		irq;
	struct resource		*resource[PCMCIA_NUM_RESOURCES];
	resource_size_t		card_addr;	/* for the 1st IOMEM resource */
	unsigned int		vpp;

	unsigned int		config_flags;	/* CONF_ENABLE_ flags below */
	unsigned int		config_base;
	unsigned int		config_index;
	unsigned int		config_regs;	/* PRESENT_ flags below */
	unsigned int		io_lines;	/* number of I/O lines */

	/* Is the device suspended? */
	u16			suspended:1;

	/* Flags whether io, irq, win configurations were
	 * requested, and whether the configuration is "locked" */
	u16			_irq:1;
	u16			_io:1;
	u16			_win:4;
	u16			_locked:1;

	/* Flag whether a "fuzzy" func_id based match is
	 * allowed. */
	u16			allow_func_id_match:1;

	/* information about this device */
	u16			has_manf_id:1;
	u16			has_card_id:1;
	u16			has_func_id:1;

	u16			reserved:4;

	u8			func_id;
	u16			manf_id;
	u16			card_id;

	char			*prod_id[4];

	u64			dma_mask;
	struct device		dev;

	/* data private to drivers */
	void			*priv;
	unsigned int		open;
};

#define to_pcmcia_dev(n) container_of(n, struct pcmcia_device, dev)
#define to_pcmcia_drv(n) container_of(n, struct pcmcia_driver, drv)


/*
 * CIS access.
 *
 * Please use the following functions to access CIS tuples:
 * - pcmcia_get_tuple()
 * - pcmcia_loop_tuple()
 * - pcmcia_get_mac_from_cis()
 *
 * To parse a tuple_t, pcmcia_parse_tuple() exists. Its interface
 * might change in future.
 */

/* get the very fi