457 lines
15 KiB
C
457 lines
15 KiB
C
/*
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* RapidIO driver services
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*
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* Copyright 2005 MontaVista Software, Inc.
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* Matt Porter <mporter@kernel.crashing.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifndef LINUX_RIO_DRV_H
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#define LINUX_RIO_DRV_H
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#include <linux/types.h>
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#include <linux/ioport.h>
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#include <linux/list.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/rio.h>
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extern int __rio_local_read_config_32(struct rio_mport *port, u32 offset,
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u32 * data);
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extern int __rio_local_write_config_32(struct rio_mport *port, u32 offset,
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u32 data);
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extern int __rio_local_read_config_16(struct rio_mport *port, u32 offset,
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u16 * data);
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extern int __rio_local_write_config_16(struct rio_mport *port, u32 offset,
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u16 data);
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extern int __rio_local_read_config_8(struct rio_mport *port, u32 offset,
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u8 * data);
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extern int __rio_local_write_config_8(struct rio_mport *port, u32 offset,
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u8 data);
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extern int rio_mport_read_config_32(struct rio_mport *port, u16 destid,
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u8 hopcount, u32 offset, u32 * data);
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extern int rio_mport_write_config_32(struct rio_mport *port, u16 destid,
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u8 hopcount, u32 offset, u32 data);
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extern int rio_mport_read_config_16(struct rio_mport *port, u16 destid,
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u8 hopcount, u32 offset, u16 * data);
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extern int rio_mport_write_config_16(struct rio_mport *port, u16 destid,
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u8 hopcount, u32 offset, u16 data);
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extern int rio_mport_read_config_8(struct rio_mport *port, u16 destid,
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u8 hopcount, u32 offset, u8 * data);
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extern int rio_mport_write_config_8(struct rio_mport *port, u16 destid,
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u8 hopcount, u32 offset, u8 data);
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/**
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* rio_local_read_config_32 - Read 32 bits from local configuration space
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* @port: Master port
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* @offset: Offset into local configuration space
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* @data: Pointer to read data into
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*
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* Reads 32 bits of data from the specified offset within the local
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* device's configuration space.
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*/
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static inline int rio_local_read_config_32(struct rio_mport *port, u32 offset,
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u32 * data)
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{
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return __rio_local_read_config_32(port, offset, data);
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}
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/**
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* rio_local_write_config_32 - Write 32 bits to local configuration space
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* @port: Master port
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* @offset: Offset into local configuration space
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* @data: Data to be written
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*
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* Writes 32 bits of data to the specified offset within the local
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* device's configuration space.
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*/
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static inline int rio_local_write_config_32(struct rio_mport *port, u32 offset,
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u32 data)
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{
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return __rio_local_write_config_32(port, offset, data);
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}
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/**
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* rio_local_read_config_16 - Read 16 bits from local configuration space
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* @port: Master port
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* @offset: Offset into local configuration space
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* @data: Pointer to read data into
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*
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* Reads 16 bits of data from the specified offset within the local
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* device's configuration space.
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*/
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static inline int rio_local_read_config_16(struct rio_mport *port, u32 offset,
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u16 * data)
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{
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return __rio_local_read_config_16(port, offset, data);
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}
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/**
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* rio_local_write_config_16 - Write 16 bits to local configuration space
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* @port: Master port
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* @offset: Offset into local configuration space
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* @data: Data to be written
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*
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* Writes 16 bits of data to the specified offset within the local
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* device's configuration space.
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*/
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static inline int rio_local_write_config_16(struct rio_mport *port, u32 offset,
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u16 data)
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{
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return __rio_local_write_config_16(port, offset, data);
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}
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/**
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* rio_local_read_config_8 - Read 8 bits from local configuration space
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* @port: Master port
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* @offset: Offset into local configuration space
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* @data: Pointer to read data into
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*
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* Reads 8 bits of data from the specified offset within the local
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* device's configuration space.
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*/
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static inline int rio_local_read_config_8(struct rio_mport *port, u32 offset,
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u8 * data)
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{
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return __rio_local_read_config_8(port, offset, data);
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}
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/**
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* rio_local_write_config_8 - Write 8 bits to local configuration space
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* @port: Master port
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* @offset: Offset into local configuration space
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* @data: Data to be written
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*
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* Writes 8 bits of data to the specified offset within the local
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* device's configuration space.
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*/
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static inline int rio_local_write_config_8(struct rio_mport *port, u32 offset,
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u8 data)
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{
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return __rio_local_write_config_8(port, offset, data);
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}
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/**
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* rio_read_config_32 - Read 32 bits from configuration space
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* @rdev: RIO device
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* @offset: Offset into device configuration space
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* @data: Pointer to read data into
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*
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* Reads 32 bits of data from the specified offset within the
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* RIO device's configuration space.
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*/
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static inline int rio_read_config_32(struct rio_dev *rdev, u32 offset,
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u32 * data)
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{
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return rio_mport_read_config_32(rdev->net->hport, rdev->destid,
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rdev->hopcount, offset, data);
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};
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/**
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* rio_write_config_32 - Write 32 bits to configuration space
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* @rdev: RIO device
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* @offset: Offset into device configuration space
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* @data: Data to be written
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*
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* Writes 32 bits of data to the specified offset within the
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* RIO device's configuration space.
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*/
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static inline int rio_write_config_32(struct rio_dev *rdev, u32 offset,
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u32 data)
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{
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return rio_mport_write_config_32(rdev->net->hport, rdev->destid,
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rdev->hopcount, offset, data);
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};
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/**
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* rio_read_config_16 - Read 16 bits from configuration space
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* @rdev: RIO device
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* @offset: Offset into device configuration space
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* @data: Pointer to read data into
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*
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* Reads 16 bits of data from the specified offset within the
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* RIO device's configuration space.
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*/
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static inline int rio_read_config_16(struct rio_dev *rdev, u32 offset,
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u16 * data)
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{
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return rio_mport_read_config_16(rdev->net->hport, rdev->destid,
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rdev->hopcount, offset, data);
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};
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/**
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* rio_write_config_16 - Write 16 bits to configuration space
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* @rdev: RIO device
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* @offset: Offset into device configuration space
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* @data: Data to be written
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*
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* Writes 16 bits of data to the specified offset within the
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* RIO device's configuration space.
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*/
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static inline int rio_write_config_16(struct rio_dev *rdev, u32 offset,
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u16 data)
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{
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return rio_mport_write_config_16(rdev->net->hport, rdev->destid,
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rdev->hopcount, offset, data);
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};
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/**
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* rio_read_config_8 - Read 8 bits from configuration space
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* @rdev: RIO device
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* @offset: Offset into device configuration space
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* @data: Pointer to read data into
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*
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* Reads 8 bits of data from the specified offset within the
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* RIO device's configuration space.
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*/
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static inline int rio_read_config_8(struct rio_dev *rdev, u32 offset, u8 * data)
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{
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return rio_mport_read_config_8(rdev->net->hport, rdev->destid,
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rdev->hopcount, offset, data);
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};
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/**
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* rio_write_config_8 - Write 8 bits to configuration space
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* @rdev: RIO device
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* @offset: Offset into device configuration space
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* @data: Data to be written
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*
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* Writes 8 bits of data to the specified offset within the
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* RIO device's configuration space.
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*/
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static inline int rio_write_config_8(struct rio_dev *rdev, u32 offset, u8 data)
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{
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return rio_mport_write_config_8(rdev->net->hport, rdev->destid,
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rdev->hopcount, offset, data);
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};
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extern int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid,
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u16 data);
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/**
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* rio_send_doorbell - Send a doorbell message to a device
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* @rdev: RIO device
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* @data: Doorbell message data
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*
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* Send a doorbell message to a RIO device. The doorbell message
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* has a 16-bit info field provided by the @data argument.
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*/
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static inline int rio_send_doorbell(struct rio_dev *rdev, u16 data)
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{
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return rio_mport_send_doorbell(rdev->net->hport, rdev->destid, data);
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};
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/**
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* rio_init_mbox_res - Initialize a RIO mailbox resource
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* @res: resource struct
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* @start: start of mailbox range
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* @end: end of mailbox range
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*
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* This function is used to initialize the fields of a resource
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* for use as a mailbox resource. It initializes a range of
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* mailboxes using the start and end arguments.
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*/
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static inline void rio_init_mbox_res(struct resource *res, int start, int end)
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{
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memset(res, 0, sizeof(struct resource));
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res->start = start;
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res->end = end;
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res->flags = RIO_RESOURCE_MAILBOX;
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}
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/**
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* rio_init_dbell_res - Initialize a RIO doorbell resource
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* @res: resource struct
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* @start: start of doorbell range
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* @end: end of doorbell range
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*
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* This function is used to initialize the fields of a resource
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* for use as a doorbell resource. It initializes a range of
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* doorbell messages using the start and end arguments.
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*/
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static inline void rio_init_dbell_res(struct resource *res, u16 start, u16 end)
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{
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memset(res, 0, sizeof(struct resource));
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res->start = start;
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res->end = end;
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res->flags = RIO_RESOURCE_DOORBELL;
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}
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/**
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* RIO_DEVICE - macro used to describe a specific RIO device
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* @dev: the 16 bit RIO device ID
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* @ven: the 16 bit RIO vendor ID
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*
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* This macro is used to create a struct rio_device_id that matches a
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* specific device. The assembly vendor and assembly device fields
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* will be set to %RIO_ANY_ID.
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*/
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#define RIO_DEVICE(dev,ven) \
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.did = (dev), .vid = (ven), \
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.asm_did = RIO_ANY_ID, .asm_vid = RIO_ANY_ID
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/* Mailbox management */
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extern int rio_request_outb_mbox(struct rio_mport *, void *, int, int,
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void (*)(struct rio_mport *, void *,int, int));
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extern int rio_release_outb_mbox(struct rio_mport *, int);
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/**
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* rio_add_outb_message - Add RIO message to an outbound mailbox queue
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* @mport: RIO master port containing the outbound queue
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* @rdev: RIO device the message is be sent to
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* @mbox: The outbound mailbox queue
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* @buffer: Pointer to the message buffer
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* @len: Length of the message buffer
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*
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* Adds a RIO message buffer to an outbound mailbox queue for
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* transmission. Returns 0 on success.
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*/
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static inline int rio_add_outb_message(struct rio_mport *mport,
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struct rio_dev *rdev, int mbox,
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void *buffer, size_t len)
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{
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return mport->ops->add_outb_message(mport, rdev, mbox,
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buffer, len);
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}
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extern int rio_request_inb_mbox(struct rio_mport *, void *, int, int,
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void (*)(struct rio_mport *, void *, int, int));
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extern int rio_release_inb_mbox(struct rio_mport *, int);
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/**
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* rio_add_inb_buffer - Add buffer to an inbound mailbox queue
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* @mport: Master port containing the inbound mailbox
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* @mbox: The inbound mailbox number
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* @buffer: Pointer to the message buffer
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*
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* Adds a buffer to an inbound mailbox queue for reception. Returns
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* 0 on success.
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*/
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static inline int rio_add_inb_buffer(struct rio_mport *mport, int mbox,
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void *buffer)
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{
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return mport->ops->add_inb_buffer(mport, mbox, buffer);
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}
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/**
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* rio_get_inb_message - Get A RIO message from an inbound mailbox queue
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* @mport: Master port containing the inbound mailbox
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* @mbox: The inbound mailbox number
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*
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* Get a RIO message from an inbound mailbox queue. Returns 0 on success.
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*/
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static inline void *rio_get_inb_message(struct rio_mport *mport, int mbox)
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{
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return mport->ops->get_inb_message(mport, mbox);
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}
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/* Doorbell management */
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extern int rio_request_inb_dbell(struct rio_mport *, void *, u16, u16,
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void (*)(struct rio_mport *, void *, u16, u16, u16));
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extern int rio_release_inb_dbell(struct rio_mport *, u16, u16);
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extern struct resource *rio_request_outb_dbell(struct rio_dev *, u16, u16);
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extern int rio_release_outb_dbell(struct rio_dev *, struct resource *);
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/* Memory region management */
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int rio_claim_resource(struct rio_dev *, int);
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int rio_request_regions(struct rio_dev *, char *);
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void rio_release_regions(struct rio_dev *);
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int rio_request_region(struct rio_dev *, int, char *);
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void rio_release_region(struct rio_dev *, int);
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/* Memory mapping functions */
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extern int rio_map_inb_region(struct rio_mport *mport, dma_addr_t local,
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u64 rbase, u32 size, u32 rflags);
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extern void rio_unmap_inb_region(struct rio_mport *mport, dma_addr_t lstart);
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extern int rio_map_outb_region(struct rio_mport *mport, u16 destid, u64 rbase,
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u32 size, u32 rflags, dma_addr_t *local);
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extern void rio_unmap_outb_region(struct rio_mport *mport,
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u16 destid, u64 rstart);
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/* Port-Write management */
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extern int rio_request_inb_pwrite(struct rio_dev *,
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int (*)(struct rio_dev *, union rio_pw_msg*, int));
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extern int rio_release_inb_pwrite(struct rio_dev *);
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extern int rio_add_mport_pw_handler(struct rio_mport *mport, void *dev_id,
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int (*pwcback)(struct rio_mport *mport, void *dev_id,
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union rio_pw_msg *msg, int step));
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extern int rio_del_mport_pw_handler(struct rio_mport *mport, void *dev_id,
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int (*pwcback)(struct rio_mport *mport, void *dev_id,
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union rio_pw_msg *msg, int step));
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extern int rio_inb_pwrite_handler(struct rio_mport *mport,
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union rio_pw_msg *pw_msg);
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extern void rio_pw_enable(struct rio_mport *mport, int enable);
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/* LDM support */
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int rio_register_driver(struct rio_driver *);
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void rio_unregister_driver(struct rio_driver *);
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struct rio_dev *rio_dev_get(struct rio_dev *);
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void rio_dev_put(struct rio_dev *);
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#ifdef CONFIG_RAPIDIO_DMA_ENGINE
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extern struct dma_chan *rio_request_dma(struct rio_dev *rdev);
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extern struct dma_chan *rio_request_mport_dma(struct rio_mport *mport);
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extern void rio_release_dma(struct dma_chan *dchan);
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extern struct dma_async_tx_descriptor *rio_dma_prep_slave_sg(
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struct rio_dev *rdev, struct dma_chan *dchan,
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struct rio_dma_data *data,
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enum dma_transfer_direction direction, unsigned long flags);
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extern struct dma_async_tx_descriptor *rio_dma_prep_xfer(
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struct dma_chan *dchan, u16 destid,
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struct rio_dma_data *data,
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enum dma_transfer_direction direction, unsigned long flags);
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#endif
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/**
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* rio_name - Get the unique RIO device identifier
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* @rdev: RIO device
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*
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* Get the unique RIO device identifier. Returns the device
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* identifier string.
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*/
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static inline const char *rio_name(struct rio_dev *rdev)
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{
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return dev_name(&rdev->dev);
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}
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/**
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* rio_get_drvdata - Get RIO driver specific data
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* @rdev: RIO device
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*
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* Get RIO driver specific data. Returns a pointer to the
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* driver specific data.
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*/
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static inline void *rio_get_drvdata(struct rio_dev *rdev)
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{
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return dev_get_drvdata(&rdev->dev);
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}
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/**
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* rio_set_drvdata - Set RIO driver specific data
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* @rdev: RIO device
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* @data: Pointer to driver specific data
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*
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* Set RIO driver specific data. device struct driver data pointer
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* is set to the @data argument.
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*/
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static inline void rio_set_drvdata(struct rio_dev *rdev, void *data)
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{
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dev_set_drvdata(&rdev->dev, data);
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}
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/* Misc driver helpers */
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extern u16 rio_local_get_device_id(struct rio_mport *port);
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extern void rio_local_set_device_id(struct rio_mport *port, u16 did);
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extern struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from);
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extern struct rio_dev *rio_get_asm(u16 vid, u16 did, u16 asm_vid, u16 asm_did,
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struct rio_dev *from);
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extern int rio_init_mports(void);
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#endif /* LINUX_RIO_DRV_H */
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