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>
57 lines
2 KiB
C
57 lines
2 KiB
C
/*
|
|
* 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
|