Release 4.18 include/pcmcia/ss.h

/*
 * ss.h
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * 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
 */

#ifndef _LINUX_SS_H

#define _LINUX_SS_H

#include <linux/device.h>
#include <linux/sched.h>	/* task_struct, completion */
#include <linux/mutex.h>

#ifdef CONFIG_CARDBUS
#include <linux/pci.h>
#endif

/* Definitions for card status flags for GetStatus */

#define SS_WRPROT	0x0001

#define SS_CARDLOCK	0x0002

#define SS_EJECTION	0x0004

#define SS_INSERTION	0x0008

#define SS_BATDEAD	0x0010

#define SS_BATWARN	0x0020

#define SS_READY	0x0040

#define SS_DETECT	0x0080

#define SS_POWERON	0x0100

#define SS_GPI		0x0200

#define SS_STSCHG	0x0400

#define SS_CARDBUS	0x0800

#define SS_3VCARD	0x1000

#define SS_XVCARD	0x2000

#define SS_PENDING	0x4000

#define SS_ZVCARD	0x8000

/* InquireSocket capabilities */

#define SS_CAP_PAGE_REGS	0x0001

#define SS_CAP_VIRTUAL_BUS	0x0002

#define SS_CAP_MEM_ALIGN	0x0004

#define SS_CAP_STATIC_MAP	0x0008

#define SS_CAP_PCCARD		0x4000

#define SS_CAP_CARDBUS		0x8000

/* for GetSocket, SetSocket */

typedef struct socket_state_t {
	
u_int	flags;
	
u_int	csc_mask;
	

u_char	Vcc, Vpp;
	
u_char	io_irq;

} socket_state_t;

extern socket_state_t dead_socket;

/* Socket configuration flags */

#define SS_PWR_AUTO	0x0010

#define SS_IOCARD	0x0020

#define SS_RESET	0x0040

#define SS_DMA_MODE	0x0080

#define SS_SPKR_ENA	0x0100

#define SS_OUTPUT_ENA	0x0200

/* Flags for I/O port and memory windows */

#define MAP_ACTIVE	0x01

#define MAP_16BIT	0x02

#define MAP_AUTOSZ	0x04

#define MAP_0WS		0x08

#define MAP_WRPROT	0x10

#define MAP_ATTRIB	0x20

#define MAP_USE_WAIT	0x40

#define MAP_PREFETCH	0x80

/* Use this just for bridge windows */

#define MAP_IOSPACE	0x20

/* power hook operations */

#define HOOK_POWER_PRE	0x01

#define HOOK_POWER_POST	0x02


typedef struct pccard_io_map {
	
u_char	map;
	
u_char	flags;
	
u_short	speed;
	

phys_addr_t start, stop;

} pccard_io_map;


typedef struct pccard_mem_map {
	
u_char		map;
	
u_char		flags;
	
u_short		speed;
	
phys_addr_t	static_start;
	
u_int		card_start;
	
struct resource	*res;

} pccard_mem_map;


typedef struct io_window_t {
	

u_int			InUse, Config;
	
struct resource		*res;

} io_window_t;

/* Maximum number of IO windows per socket */

#define MAX_IO_WIN 2

/* Maximum number of memory windows per socket */

#define MAX_WIN 4


/*
 * Socket operations.
 */
struct pcmcia_socket;
struct pccard_resource_ops;
struct config_t;
struct pcmcia_callback;
struct user_info_t;


struct pccard_operations {
	
int (*init)(struct pcmcia_socket *s);
	
int (*suspend)(struct pcmcia_socket *s);
	
int (*get_status)(struct pcmcia_socket *s, u_int *value);
	
int (*set_socket)(struct pcmcia_socket *s, socket_state_t *state);
	
int (*set_io_map)(struct pcmcia_socket *s, struct pccard_io_map *io);
	
int (*set_mem_map)(struct pcmcia_socket *s, struct pccard_mem_map *mem);
};


struct pcmcia_socket {
	
struct module			*owner;
	
socket_state_t			socket;
	
u_int				state;
	
u_int				suspended_state;	/* state before suspend */
	
u_short				functions;
	
u_short				lock_count;
	
pccard_mem_map			cis_mem;
	
void __iomem 			*cis_virt;
	
io_window_t			io[MAX_IO_WIN];
	
pccard_mem_map			win[MAX_WIN];
	
struct list_head		cis_cache;
	
size_t				fake_cis_len;
	
u8				*fake_cis;

	
struct list_head		socket_list;
	
struct completion		socket_released;

	/* deprecated */
	
unsigned int			sock;		/* socket number */


	/* socket capabilities */
	
u_int				features;
	
u_int				irq_mask;
	
u_int				map_size;
	
u_int				io_offset;
	
u_int				pci_irq;
	
struct pci_dev			*cb_dev;

	/* socket setup is done so resources should be able to be allocated.
         * Only if set to 1, calls to find_{io,mem}_region are handled, and
         * insertio events are actually managed by the PCMCIA layer.*/
	
u8				resource_setup_done;

	/* socket operations */
	
struct pccard_operations	*ops;
	
struct pccard_resource_ops	*resource_ops;
	
void				*resource_data;

	/* Zoom video behaviour is so chip specific its not worth adding
           this to _ops */
	
void 				(*zoom_video)(struct pcmcia_socket *,
						      int);

	/* so is power hook */
	
int (*power_hook)(struct pcmcia_socket *sock, int operation);

	/* allows tuning the CB bridge before loading driver for the CB card */
#ifdef CONFIG_CARDBUS
	
void (*tune_bridge)(struct pcmcia_socket *sock, struct pci_bus *bus);
#endif

	/* state thread */
	
struct task_struct		*thread;
	
struct completion		thread_done;
	
unsigned int			thread_events;
	
unsigned int			sysfs_events;

	/* For the non-trivial interaction between these locks,
         * see Documentation/pcmcia/locking.txt */
	
struct mutex			skt_mutex;
	
struct mutex			ops_mutex;

	/* protects thread_events and sysfs_events */
	
spinlock_t			thread_lock;

	/* pcmcia (16-bit) */
	
struct pcmcia_callback		*callback;

#if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
	/* The following elements refer to 16-bit PCMCIA devices inserted
         * into the socket */
	
struct list_head		devices_list;

	/* the number of devices, used only internally and subject to
         * incorrectness and change */
	
u8				device_count;

	/* does the PCMCIA card consist of two pseudo devices? */
	
u8				pcmcia_pfc;

	/* non-zero if PCMCIA card is present */
	
atomic_t			present;

	/* IRQ to be used by PCMCIA devices. May not be IRQ 0. */
	
unsigned int			pcmcia_irq;

#endif /* CONFIG_PCMCIA */

	/* socket device */
	
struct device			dev;
	/* data internal to the socket driver */
	
void				*driver_data;
	/* status of the card during resume from a system sleep state */
	
int				resume_status;
};


/* socket drivers must define the resource operations type they use. There
 * are three options:
 * - pccard_static_ops          iomem and ioport areas are assigned statically
 * - pccard_iodyn_ops           iomem areas is assigned statically, ioport
 *                              areas dynamically
 *                              If this option is selected, use
 *                              "select PCCARD_IODYN" in Kconfig.
 * - pccard_nonstatic_ops       iomem and ioport areas are assigned dynamically.
 *                              If this option is selected, use
 *                              "select PCCARD_NONSTATIC" in Kconfig.
 *
 */
extern struct pccard_resource_ops pccard_static_ops;
#if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
extern struct pccard_resource_ops pccard_iodyn_ops;
extern struct pccard_resource_ops pccard_nonstatic_ops;
#else
/* If PCMCIA is not used, but only CARDBUS, these functions are not used
 * at all. Therefore, do not use the large (240K!) rsrc_nonstatic module
 */

#define pccard_iodyn_ops pccard_static_ops

#define pccard_nonstatic_ops pccard_static_ops
#endif


/* socket drivers use this callback in their IRQ handler */
extern void pcmcia_parse_events(struct pcmcia_socket *socket,
				unsigned int events);

/* to register and unregister a socket */
extern int pcmcia_register_socket(struct pcmcia_socket *socket);
extern void pcmcia_unregister_socket(struct pcmcia_socket *socket);


#endif /* _LINUX_SS_H */
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