xref: /openbmc/linux/include/pcmcia/ss.h (revision 53efec9513cfb1acff602c7ebdd945d677808e9e)

/*
 * 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>

#include <pcmcia/cs_types.h>
#include <pcmcia/cs.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;
    u_int	start, stop;
} pccard_io_map;

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

typedef struct cb_bridge_map {
    u_char	map;
    u_char	flags;
    u_int	start, stop;
} cb_bridge_map;

/*
 * Socket operations.
 */
struct pcmcia_socket;

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

struct pccard_resource_ops {
	int	(*validate_mem)		(struct pcmcia_socket *s);
	int	(*adjust_io_region)	(struct resource *res,
					 unsigned long r_start,
					 unsigned long r_end,
					 struct pcmcia_socket *s);
	struct resource* (*find_io)	(unsigned long base, int num,
					 unsigned long align,
					 struct pcmcia_socket *s);
	struct resource* (*find_mem)	(unsigned long base, unsigned long num,
					 unsigned long align, int low,
					 struct pcmcia_socket *s);
	int	(*add_io)		(struct pcmcia_socket *s,
					 unsigned int action,
					 unsigned long r_start,
					 unsigned long r_end);
	int	(*add_mem)		(struct pcmcia_socket *s,
					 unsigned int action,
					 unsigned long r_start,
					 unsigned long r_end);
	int	(*init)			(struct pcmcia_socket *s);
	void	(*exit)			(struct pcmcia_socket *s);
};
/* SS_CAP_STATIC_MAP */
extern struct pccard_resource_ops pccard_static_ops;
/* !SS_CAP_STATIC_MAP */
extern struct pccard_resource_ops pccard_nonstatic_ops;

/* static mem, dynamic IO sockets */
extern struct pccard_resource_ops pccard_iodyn_ops;

/*
 *  Calls to set up low-level "Socket Services" drivers
 */
struct pcmcia_socket;

typedef struct io_window_t {
	u_int			InUse, Config;
	struct resource		*res;
} io_window_t;

#define WINDOW_MAGIC	0xB35C
typedef struct window_t {
	u_short			magic;
	u_short			index;
	struct pcmcia_device	*handle;
	struct pcmcia_socket 	*sock;
	pccard_mem_map		ctl;
} 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

struct config_t;
struct pcmcia_callback;
struct user_info_t;

struct pcmcia_socket {
	struct module			*owner;
	spinlock_t			lock;
	socket_state_t			socket;
	u_int				state;
	u_short				functions;
	u_short				lock_count;
	pccard_mem_map			cis_mem;
	void __iomem 			*cis_virt;
	struct {
		u_int			AssignedIRQ;
		u_int			Config;
	} irq;
	io_window_t			io[MAX_IO_WIN];
	window_t			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_char				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 insertion
	 * events are actually managed by the PCMCIA layer.*/
	u8				resource_setup_done:1;

	/* is set to one if resource setup is done using adjust_resource_info() */
	u8				resource_setup_old:1;
	u8				resource_setup_new:1;

	u8				reserved:5;

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

	/* state thread */
	struct mutex			skt_mutex;	/* protects socket h/w state */

	struct task_struct		*thread;
	struct completion		thread_done;
	spinlock_t			thread_lock;	/* protects thread_events */
	unsigned int			thread_events;

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

#if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
	struct list_head		devices_list;	/*  PCMCIA devices */
	u8				device_count;	/* the number of devices, used
							 * only internally and subject
							 * to incorrectness and change */

	struct {
		u8			present:1,	/* PCMCIA card is present in socket */
					busy:1,		/* "master" ioctl is used */
					dead:1,		/* pcmcia module is being unloaded */
					device_add_pending:1, /* a multifunction-device
							       * add event is pending */
					mfc_pfc:1,	/* the pending event adds a mfc (1) or pfc (0) */
					reserved:3;
	} 				pcmcia_state;

	struct work_struct		device_add;	/* for adding further pseudo-multifunction
							 * devices */

#ifdef CONFIG_PCMCIA_IOCTL
	struct user_info_t		*user;
	wait_queue_head_t		queue;
#endif
#endif

	/* cardbus (32-bit) */
#ifdef CONFIG_CARDBUS
	struct resource *		cb_cis_res;
	void __iomem			*cb_cis_virt;
#endif

	/* socket device */
	struct device			dev;
	void				*driver_data;	/* data internal to the socket driver */

};

struct pcmcia_socket * pcmcia_get_socket_by_nr(unsigned int nr);



extern void pcmcia_parse_events(struct pcmcia_socket *socket, unsigned int events);
extern int pcmcia_register_socket(struct pcmcia_socket *socket);
extern void pcmcia_unregister_socket(struct pcmcia_socket *socket);

extern struct class pcmcia_socket_class;

/* socket drivers are expected to use these callbacks in their .drv struct */
extern int pcmcia_socket_dev_suspend(struct device *dev, pm_message_t state);
extern int pcmcia_socket_dev_resume(struct device *dev);

#endif /* _LINUX_SS_H */