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/*

 * linux/drivers/pcmcia/soc_common.h

 *

 * Copyright (C) 2000 John G Dorsey <john+@cs.cmu.edu>

 *

 * This file contains definitions for the PCMCIA support code common to

 * integrated SOCs like the SA-11x0 and PXA2xx microprocessors.

 */

#ifndef _ASM_ARCH_PCMCIA

#define _ASM_ARCH_PCMCIA

/* include the world */

#include <linux/cpufreq.h>

#include <pcmcia/cs_types.h>

#include <pcmcia/cs.h>

#include <pcmcia/ss.h>

#include <pcmcia/bulkmem.h>

#include <pcmcia/cistpl.h>

#include "cs_internal.h"

struct device;

struct pcmcia_low_level;

/*

 * This structure encapsulates per-socket state which we might need to

 * use when responding to a Card Services query of some kind.

 */

struct soc_pcmcia_socket {

        struct pcmcia_socket    socket;

        /*

         * Info from low level handler

         */

        struct device           *dev;

        unsigned int            nr;

        unsigned int            irq;

        /*

         * Core PCMCIA state

         */

        struct pcmcia_low_level *ops;

        unsigned int            status;

        socket_state_t          cs_state;

        unsigned short          spd_io[MAX_IO_WIN];

        unsigned short          spd_mem[MAX_WIN];

        unsigned short          spd_attr[MAX_WIN];

        struct resource         res_skt;

        struct resource         res_io;

        struct resource         res_mem;

        struct resource         res_attr;

        void __iomem            *virt_io;

        unsigned int            irq_state;

        struct timer_list       poll_timer;

        struct list_head        node;

};

struct pcmcia_state {

  unsigned detect: 1,

            ready: 1,

             bvd1: 1,

             bvd2: 1,

           wrprot: 1,

            vs_3v: 1,

            vs_Xv: 1;

};

struct pcmcia_low_level {

        struct module *owner;

        /* first socket in system */

        int first;

        /* nr of sockets */

        int nr;

        int (*hw_init)(struct soc_pcmcia_socket *);

        void (*hw_shutdown)(struct soc_pcmcia_socket *);

        void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);

        int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);

        /*

         * Enable card status IRQs on (re-)initialisation.  This can

         * be called at initialisation, power management event, or

         * pcmcia event.

         */

        void (*socket_init)(struct soc_pcmcia_socket *);

        /*

         * Disable card status IRQs and PCMCIA bus on suspend.

         */

        void (*socket_suspend)(struct soc_pcmcia_socket *);

        /*

         * Hardware specific timing routines.

         * If provided, the get_timing routine overrides the SOC default.

         */

        unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int);

        int (*set_timing)(struct soc_pcmcia_socket *);

        int (*show_timing)(struct soc_pcmcia_socket *, char *);

#ifdef CONFIG_CPU_FREQ

        /*

         * CPUFREQ support.

         */

        int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *);

#endif

};

struct pcmcia_irqs {

        int sock;

        int irq;

        const char *str;

};

struct soc_pcmcia_timing {

        unsigned short io;

        unsigned short mem;

        unsigned short attr;

};

extern int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);

extern void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);

extern void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);

extern void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);

extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *);

extern struct list_head soc_pcmcia_sockets;

extern struct semaphore soc_pcmcia_sockets_lock;

extern int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr);

extern int soc_common_drv_pcmcia_remove(struct device *dev);

#ifdef DEBUG

extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,

                             int lvl, const char *fmt, ...);

#define debug(skt, lvl, fmt, arg...) \

        soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg)

#else

#define debug(skt, lvl, fmt, arg...) do { } while (0)

#endif

/*

 * The PC Card Standard, Release 7, section 4.13.4, says that twIORD

 * has a minimum value of 165ns. Section 4.13.5 says that twIOWR has

 * a minimum value of 165ns, as well. Section 4.7.2 (describing

 * common and attribute memory write timing) says that twWE has a

 * minimum value of 150ns for a 250ns cycle time (for 5V operation;

 * see section 4.7.4), or 300ns for a 600ns cycle time (for 3.3V

 * operation, also section 4.7.4). Section 4.7.3 says that taOE

 * has a maximum value of 150ns for a 300ns cycle time (for 5V

 * operation), or 300ns for a 600ns cycle time (for 3.3V operation).

 *

 * When configuring memory maps, Card Services appears to adopt the policy

 * that a memory access time of "0" means "use the default." The default

 * PCMCIA I/O command width time is 165ns. The default PCMCIA 5V attribute

 * and memory command width time is 150ns; the PCMCIA 3.3V attribute and

 * memory command width time is 300ns.

 */

#define SOC_PCMCIA_IO_ACCESS            (165)

#define SOC_PCMCIA_5V_MEM_ACCESS        (150)

#define SOC_PCMCIA_3V_MEM_ACCESS        (300)

#define SOC_PCMCIA_ATTR_MEM_ACCESS      (300)

/*

 * The socket driver actually works nicely in interrupt-driven form,

 * so the (relatively infrequent) polling is "just to be sure."

 */

#define SOC_PCMCIA_POLL_PERIOD    (2*HZ)

/* I/O pins replacing memory pins

 * (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75)

 *

 * These signals change meaning when going from memory-only to

 * memory-or-I/O interface:

 */

#define iostschg bvd1

#define iospkr   bvd2

#endif