470 lines
14 KiB
C
470 lines
14 KiB
C
/*
|
|
* 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 */
|