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/*

 * RapidIO driver services

 *

 * Copyright 2005 MontaVista Software, Inc.

 * Matt Porter <mporter@kernel.crashing.org>

 *

 * This program is free software; you can redistribute  it and/or modify it

 * under  the terms of  the GNU General  Public License as published by the

 * Free Software Foundation;  either version 2 of the  License, or (at your

 * option) any later version.

 */

#ifndef LINUX_RIO_DRV_H

#define LINUX_RIO_DRV_H

#ifdef __KERNEL__

#include <linux/types.h>

#include <linux/ioport.h>

#include <linux/list.h>

#include <linux/errno.h>

#include <linux/device.h>

#include <linux/string.h>

#include <linux/rio.h>

extern int __rio_local_read_config_32(struct rio_mport *port, u32 offset,

                                      u32 * data);

extern int __rio_local_write_config_32(struct rio_mport *port, u32 offset,

                                       u32 data);

extern int __rio_local_read_config_16(struct rio_mport *port, u32 offset,

                                      u16 * data);

extern int __rio_local_write_config_16(struct rio_mport *port, u32 offset,

                                       u16 data);

extern int __rio_local_read_config_8(struct rio_mport *port, u32 offset,

                                     u8 * data);

extern int __rio_local_write_config_8(struct rio_mport *port, u32 offset,

                                      u8 data);

extern int rio_mport_read_config_32(struct rio_mport *port, u16 destid,

                                    u8 hopcount, u32 offset, u32 * data);

extern int rio_mport_write_config_32(struct rio_mport *port, u16 destid,

                                     u8 hopcount, u32 offset, u32 data);

extern int rio_mport_read_config_16(struct rio_mport *port, u16 destid,

                                    u8 hopcount, u32 offset, u16 * data);

extern int rio_mport_write_config_16(struct rio_mport *port, u16 destid,

                                     u8 hopcount, u32 offset, u16 data);

extern int rio_mport_read_config_8(struct rio_mport *port, u16 destid,

                                   u8 hopcount, u32 offset, u8 * data);

extern int rio_mport_write_config_8(struct rio_mport *port, u16 destid,

                                    u8 hopcount, u32 offset, u8 data);

/**

 * rio_local_read_config_32 - Read 32 bits from local configuration space

 * @port: Master port

 * @offset: Offset into local configuration space

 * @data: Pointer to read data into

 *

 * Reads 32 bits of data from the specified offset within the local

 * device's configuration space.

 */

static inline int rio_local_read_config_32(struct rio_mport *port, u32 offset,

                                           u32 * data)

{

        return __rio_local_read_config_32(port, offset, data);

}

/**

 * rio_local_write_config_32 - Write 32 bits to local configuration space

 * @port: Master port

 * @offset: Offset into local configuration space

 * @data: Data to be written

 *

 * Writes 32 bits of data to the specified offset within the local

 * device's configuration space.

 */

static inline int rio_local_write_config_32(struct rio_mport *port, u32 offset,

                                            u32 data)

{

        return __rio_local_write_config_32(port, offset, data);

}

/**

 * rio_local_read_config_16 - Read 16 bits from local configuration space

 * @port: Master port

 * @offset: Offset into local configuration space

 * @data: Pointer to read data into

 *

 * Reads 16 bits of data from the specified offset within the local

 * device's configuration space.

 */

static inline int rio_local_read_config_16(struct rio_mport *port, u32 offset,

                                           u16 * data)

{

        return __rio_local_read_config_16(port, offset, data);

}

/**

 * rio_local_write_config_16 - Write 16 bits to local configuration space

 * @port: Master port

 * @offset: Offset into local configuration space

 * @data: Data to be written

 *

 * Writes 16 bits of data to the specified offset within the local

 * device's configuration space.

 */

static inline int rio_local_write_config_16(struct rio_mport *port, u32 offset,

                                            u16 data)

{

        return __rio_local_write_config_16(port, offset, data);

}

/**

 * rio_local_read_config_8 - Read 8 bits from local configuration space

 * @port: Master port

 * @offset: Offset into local configuration space

 * @data: Pointer to read data into

 *

 * Reads 8 bits of data from the specified offset within the local

 * device's configuration space.

 */

static inline int rio_local_read_config_8(struct rio_mport *port, u32 offset,

                                          u8 * data)

{

        return __rio_local_read_config_8(port, offset, data);

}

/**

 * rio_local_write_config_8 - Write 8 bits to local configuration space

 * @port: Master port

 * @offset: Offset into local configuration space

 * @data: Data to be written

 *

 * Writes 8 bits of data to the specified offset within the local

 * device's configuration space.

 */

static inline int rio_local_write_config_8(struct rio_mport *port, u32 offset,

                                           u8 data)

{

        return __rio_local_write_config_8(port, offset, data);

}

/**

 * rio_read_config_32 - Read 32 bits from configuration space

 * @rdev: RIO device

 * @offset: Offset into device configuration space

 * @data: Pointer to read data into

 *

 * Reads 32 bits of data from the specified offset within the

 * RIO device's configuration space.

 */

static inline int rio_read_config_32(struct rio_dev *rdev, u32 offset,

                                     u32 * data)

{

        u8 hopcount = 0xff;

        u16 destid = rdev->destid;

        if (rdev->rswitch) {

                destid = rdev->rswitch->destid;

                hopcount = rdev->rswitch->hopcount;

        }

        return rio_mport_read_config_32(rdev->net->hport, destid, hopcount,

                                        offset, data);

};

/**

 * rio_write_config_32 - Write 32 bits to configuration space

 * @rdev: RIO device

 * @offset: Offset into device configuration space

 * @data: Data to be written

 *

 * Writes 32 bits of data to the specified offset within the

 * RIO device's configuration space.

 */

static inline int rio_write_config_32(struct rio_dev *rdev, u32 offset,

                                      u32 data)

{

        u8 hopcount = 0xff;

        u16 destid = rdev->destid;

        if (rdev->rswitch) {

                destid = rdev->rswitch->destid;

                hopcount = rdev->rswitch->hopcount;

        }

        return rio_mport_write_config_32(rdev->net->hport, destid, hopcount,

                                         offset, data);

};

/**

 * rio_read_config_16 - Read 16 bits from configuration space

 * @rdev: RIO device

 * @offset: Offset into device configuration space

 * @data: Pointer to read data into

 *

 * Reads 16 bits of data from the specified offset within the

 * RIO device's configuration space.

 */

static inline int rio_read_config_16(struct rio_dev *rdev, u32 offset,

                                     u16 * data)

{

        u8 hopcount = 0xff;

        u16 destid = rdev->destid;

        if (rdev->rswitch) {

                destid = rdev->rswitch->destid;

                hopcount = rdev->rswitch->hopcount;

        }

        return rio_mport_read_config_16(rdev->net->hport, destid, hopcount,

                                        offset, data);

};

/**

 * rio_write_config_16 - Write 16 bits to configuration space

 * @rdev: RIO device

 * @offset: Offset into device configuration space

 * @data: Data to be written

 *

 * Writes 16 bits of data to the specified offset within the

 * RIO device's configuration space.

 */

static inline int rio_write_config_16(struct rio_dev *rdev, u32 offset,

                                      u16 data)

{

        u8 hopcount = 0xff;

        u16 destid = rdev->destid;

        if (rdev->rswitch) {

                destid = rdev->rswitch->destid;

                hopcount = rdev->rswitch->hopcount;

        }

        return rio_mport_write_config_16(rdev->net->hport, destid, hopcount,

                                         offset, data);

};

/**

 * rio_read_config_8 - Read 8 bits from configuration space

 * @rdev: RIO device

 * @offset: Offset into device configuration space

 * @data: Pointer to read data into

 *

 * Reads 8 bits of data from the specified offset within the

 * RIO device's configuration space.

 */

static inline int rio_read_config_8(struct rio_dev *rdev, u32 offset, u8 * data)

{

        u8 hopcount = 0xff;

        u16 destid = rdev->destid;

        if (rdev->rswitch) {

                destid = rdev->rswitch->destid;

                hopcount = rdev->rswitch->hopcount;

        }

        return rio_mport_read_config_8(rdev->net->hport, destid, hopcount,

                                       offset, data);

};

/**

 * rio_write_config_8 - Write 8 bits to configuration space

 * @rdev: RIO device

 * @offset: Offset into device configuration space

 * @data: Data to be written

 *

 * Writes 8 bits of data to the specified offset within the

 * RIO device's configuration space.

 */

static inline int rio_write_config_8(struct rio_dev *rdev, u32 offset, u8 data)

{

        u8 hopcount = 0xff;

        u16 destid = rdev->destid;

        if (rdev->rswitch) {

                destid = rdev->rswitch->destid;

                hopcount = rdev->rswitch->hopcount;

        }

        return rio_mport_write_config_8(rdev->net->hport, destid, hopcount,

                                        offset, data);

};

extern int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid,

                                   u16 data);

/**

 * rio_send_doorbell - Send a doorbell message to a device

 * @rdev: RIO device

 * @data: Doorbell message data

 *

 * Send a doorbell message to a RIO device. The doorbell message

 * has a 16-bit info field provided by the @data argument.

 */

static inline int rio_send_doorbell(struct rio_dev *rdev, u16 data)

{

        return rio_mport_send_doorbell(rdev->net->hport, rdev->destid, data);

};

/**

 * rio_init_mbox_res - Initialize a RIO mailbox resource

 * @res: resource struct

 * @start: start of mailbox range

 * @end: end of mailbox range

 *

 * This function is used to initialize the fields of a resource

 * for use as a mailbox resource.  It initializes a range of

 * mailboxes using the start and end arguments.

 */

static inline void rio_init_mbox_res(struct resource *res, int start, int end)

{

        memset(res, 0, sizeof(struct resource));

        res->start = start;

        res->end = end;

        res->flags = RIO_RESOURCE_MAILBOX;

}

/**

 * rio_init_dbell_res - Initialize a RIO doorbell resource

 * @res: resource struct

 * @start: start of doorbell range

 * @end: end of doorbell range

 *

 * This function is used to initialize the fields of a resource

 * for use as a doorbell resource.  It initializes a range of

 * doorbell messages using the start and end arguments.

 */

static inline void rio_init_dbell_res(struct resource *res, u16 start, u16 end)

{

        memset(res, 0, sizeof(struct resource));

        res->start = start;

        res->end = end;

        res->flags = RIO_RESOURCE_DOORBELL;

}

/**

 * RIO_DEVICE - macro used to describe a specific RIO device

 * @dev: the 16 bit RIO device ID

 * @ven: the 16 bit RIO vendor ID

 *

 * This macro is used to create a struct rio_device_id that matches a

 * specific device.  The assembly vendor and assembly device fields

 * will be set to %RIO_ANY_ID.

 */

#define RIO_DEVICE(dev,ven) \

        .did = (dev), .vid = (ven), \

        .asm_did = RIO_ANY_ID, .asm_vid = RIO_ANY_ID

/* Mailbox management */

extern int rio_request_outb_mbox(struct rio_mport *, void *, int, int,

                                 void (*)(struct rio_mport *, void *,int, int));

extern int rio_release_outb_mbox(struct rio_mport *, int);

/**

 * rio_add_outb_message - Add RIO message to an outbound mailbox queue

 * @mport: RIO master port containing the outbound queue

 * @rdev: RIO device the message is be sent to

 * @mbox: The outbound mailbox queue

 * @buffer: Pointer to the message buffer

 * @len: Length of the message buffer

 *

 * Adds a RIO message buffer to an outbound mailbox queue for

 * transmission. Returns 0 on success.

 */

static inline int rio_add_outb_message(struct rio_mport *mport,

                                       struct rio_dev *rdev, int mbox,

                                       void *buffer, size_t len)

{

        return rio_hw_add_outb_message(mport, rdev, mbox, buffer, len);

}

extern int rio_request_inb_mbox(struct rio_mport *, void *, int, int,

                                void (*)(struct rio_mport *, void *, int, int));

extern int rio_release_inb_mbox(struct rio_mport *, int);

/**

 * rio_add_inb_buffer - Add buffer to an inbound mailbox queue

 * @mport: Master port containing the inbound mailbox

 * @mbox: The inbound mailbox number

 * @buffer: Pointer to the message buffer

 *

 * Adds a buffer to an inbound mailbox queue for reception. Returns

 * 0 on success.

 */

static inline int rio_add_inb_buffer(struct rio_mport *mport, int mbox,

                                     void *buffer)

{

        return rio_hw_add_inb_buffer(mport, mbox, buffer);

}

/**

 * rio_get_inb_message - Get A RIO message from an inbound mailbox queue

 * @mport: Master port containing the inbound mailbox

 * @mbox: The inbound mailbox number

 * @buffer: Pointer to the message buffer

 *

 * Get a RIO message from an inbound mailbox queue. Returns 0 on success.

 */

static inline void *rio_get_inb_message(struct rio_mport *mport, int mbox)

{

        return rio_hw_get_inb_message(mport, mbox);

}

/* Doorbell management */

extern int rio_request_inb_dbell(struct rio_mport *, void *, u16, u16,

                                 void (*)(struct rio_mport *, void *, u16, u16, u16));

extern int rio_release_inb_dbell(struct rio_mport *, u16, u16);

extern struct resource *rio_request_outb_dbell(struct rio_dev *, u16, u16);

extern int rio_release_outb_dbell(struct rio_dev *, struct resource *);

/* Memory region management */

int rio_claim_resource(struct rio_dev *, int);

int rio_request_regions(struct rio_dev *, char *);

void rio_release_regions(struct rio_dev *);

int rio_request_region(struct rio_dev *, int, char *);

void rio_release_region(struct rio_dev *, int);

/* LDM support */

int rio_register_driver(struct rio_driver *);

void rio_unregister_driver(struct rio_driver *);

struct rio_dev *rio_dev_get(struct rio_dev *);

void rio_dev_put(struct rio_dev *);

/**

 * rio_name - Get the unique RIO device identifier

 * @rdev: RIO device

 *

 * Get the unique RIO device identifier. Returns the device

 * identifier string.

 */

static inline char *rio_name(struct rio_dev *rdev)

{

        return rdev->dev.bus_id;

}

/**

 * rio_get_drvdata - Get RIO driver specific data

 * @rdev: RIO device

 *

 * Get RIO driver specific data. Returns a pointer to the

 * driver specific data.

 */

static inline void *rio_get_drvdata(struct rio_dev *rdev)

{

        return dev_get_drvdata(&rdev->dev);

}

/**

 * rio_set_drvdata - Set RIO driver specific data

 * @rdev: RIO device

 * @data: Pointer to driver specific data

 *

 * Set RIO driver specific data. device struct driver data pointer

 * is set to the @data argument.

 */

static inline void rio_set_drvdata(struct rio_dev *rdev, void *data)

{

        dev_set_drvdata(&rdev->dev, data);

}

/* Misc driver helpers */

extern u16 rio_local_get_device_id(struct rio_mport *port);

extern struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from);

extern struct rio_dev *rio_get_asm(u16 vid, u16 did, u16 asm_vid, u16 asm_did,

                                   struct rio_dev *from);

#endif                          /* __KERNEL__ */

#endif                          /* LINUX_RIO_DRV_H */