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[PATCH] RapidIO support: core base

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Adds a RapidIO subsystem to the kernel.  RIO is a switched fabric interconnect
used in higher-end embedded applications.  The curious can look at the specs
over at http://www.rapidio.org

The core code implements enumeration/discovery, management of
devices/resources, and interfaces for RIO drivers.

There's a lot more to do to take advantages of all the hardware features.
However, this should provide a good base for folks with RIO hardware to start
contributing.

Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Matt Porter
2005-11-07 01:00:15 -08:00
committed by Linus Torvalds
parent d217d5450f
commit 394b701ce4
12 changed files with 1393 additions and 1 deletions
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57
drivers/rapidio/rio.h Normal file
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/*
* RapidIO interconnect 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.
*/
#include <linux/device.h>
#include <linux/list.h>
#include <linux/rio.h>
/* Functions internal to the RIO core code */
extern u32 rio_mport_get_feature(struct rio_mport *mport, int local, u16 destid,
u8 hopcount, int ftr);
extern int rio_create_sysfs_dev_files(struct rio_dev *rdev);
extern int rio_enum_mport(struct rio_mport *mport);
extern int rio_disc_mport(struct rio_mport *mport);
/* Structures internal to the RIO core code */
extern struct device_attribute rio_dev_attrs[];
extern spinlock_t rio_global_list_lock;
/* Helpers internal to the RIO core code */
#define DECLARE_RIO_ROUTE_SECTION(section, vid, did, add_hook, get_hook) \
static struct rio_route_ops __rio_route_ops __attribute_used__ \
__attribute__((__section__(#section))) = { vid, did, add_hook, get_hook };
/**
* DECLARE_RIO_ROUTE_OPS - Registers switch routing operations
* @vid: RIO vendor ID
* @did: RIO device ID
* @add_hook: Callback that adds a route entry
* @get_hook: Callback that gets a route entry
*
* Manipulating switch route tables in RIO is switch specific. This
* registers a switch by vendor and device ID with two callbacks for
* modifying and retrieving route entries in a switch. A &struct
* rio_route_ops is initialized with the ops and placed into a
* RIO-specific kernel section.
*/
#define DECLARE_RIO_ROUTE_OPS(vid, did, add_hook, get_hook) \
DECLARE_RIO_ROUTE_SECTION(.rio_route_ops, \
vid, did, add_hook, get_hook)
#ifdef CONFIG_RAPIDIO_8_BIT_TRANSPORT
#define RIO_GET_DID(x) ((x & 0x00ff0000) >> 16)
#define RIO_SET_DID(x) ((x & 0x000000ff) << 16)
#else
#define RIO_GET_DID(x) (x & 0xffff)
#define RIO_SET_DID(x) (x & 0xffff)
#endif