394b701ce4
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>
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/*
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* RapidIO interconnect 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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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/rio.h>
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/* Functions internal to the RIO core code */
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extern u32 rio_mport_get_feature(struct rio_mport *mport, int local, u16 destid,
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u8 hopcount, int ftr);
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extern int rio_create_sysfs_dev_files(struct rio_dev *rdev);
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extern int rio_enum_mport(struct rio_mport *mport);
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extern int rio_disc_mport(struct rio_mport *mport);
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/* Structures internal to the RIO core code */
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extern struct device_attribute rio_dev_attrs[];
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extern spinlock_t rio_global_list_lock;
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/* Helpers internal to the RIO core code */
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#define DECLARE_RIO_ROUTE_SECTION(section, vid, did, add_hook, get_hook) \
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static struct rio_route_ops __rio_route_ops __attribute_used__ \
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__attribute__((__section__(#section))) = { vid, did, add_hook, get_hook };
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/**
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* DECLARE_RIO_ROUTE_OPS - Registers switch routing operations
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* @vid: RIO vendor ID
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* @did: RIO device ID
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* @add_hook: Callback that adds a route entry
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* @get_hook: Callback that gets a route entry
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*
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* Manipulating switch route tables in RIO is switch specific. This
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* registers a switch by vendor and device ID with two callbacks for
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* modifying and retrieving route entries in a switch. A &struct
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* rio_route_ops is initialized with the ops and placed into a
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* RIO-specific kernel section.
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*/
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#define DECLARE_RIO_ROUTE_OPS(vid, did, add_hook, get_hook) \
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DECLARE_RIO_ROUTE_SECTION(.rio_route_ops, \
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vid, did, add_hook, get_hook)
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#ifdef CONFIG_RAPIDIO_8_BIT_TRANSPORT
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#define RIO_GET_DID(x) ((x & 0x00ff0000) >> 16)
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#define RIO_SET_DID(x) ((x & 0x000000ff) << 16)
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#else
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#define RIO_GET_DID(x) (x & 0xffff)
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#define RIO_SET_DID(x) (x & 0xffff)
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#endif
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