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Commit eb188d0e authored by Matt Porter's avatar Matt Porter Committed by Linus Torvalds
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[PATCH] RapidIO support: core enum 



Adds RapidIO enumeration/discovery.

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

Signed-off-by: default avatarMatt Porter <mporter@kernel.crashing.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 70a50ebd

drivers/rapidio/rio-scan.c

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File added.

Preview size limit exceeded, changes collapsed.

drivers/rapidio/switches/Makefile

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Original line number Diff line number Diff line 
#

# Makefile for RIO switches

#



obj-$(CONFIG_RAPIDIO)	+= tsi500.o

drivers/rapidio/switches/tsi500.c

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Original line number Diff line number Diff line 
/*

 * RapidIO Tsi500 switch support

 *

 * 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/rio.h>

#include <linux/rio_drv.h>

#include <linux/rio_ids.h>

#include "../rio.h"



static int

tsi500_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, u16 table, u16 route_destid, u8 route_port)

{

	int i;

	u32 offset = 0x10000 + 0xa00 + ((route_destid / 2)&~0x3);

	u32 result;



	if (table == 0xff) {

		rio_mport_read_config_32(mport, destid, hopcount, offset, &result);

		result &= ~(0xf << (4*(route_destid & 0x7)));

		for (i=0;i<4;i++)

			rio_mport_write_config_32(mport, destid, hopcount, offset + (0x20000*i), result | (route_port << (4*(route_destid & 0x7))));

	}

	else {

		rio_mport_read_config_32(mport, destid, hopcount, offset + (0x20000*table), &result);

		result &= ~(0xf << (4*(route_destid & 0x7)));

		rio_mport_write_config_32(mport, destid, hopcount, offset + (0x20000*table), result | (route_port << (4*(route_destid & 0x7))));

	}



	return 0;

}



static int

tsi500_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, u16 table, u16 route_destid, u8 *route_port)

{

	int ret = 0;

	u32 offset = 0x10000 + 0xa00 + ((route_destid / 2)&~0x3);

	u32 result;



	if (table == 0xff)

		rio_mport_read_config_32(mport, destid, hopcount, offset, &result);

	else

		rio_mport_read_config_32(mport, destid, hopcount, offset + (0x20000*table), &result);



	result &= 0xf << (4*(route_destid & 0x7));

	*route_port = result >> (4*(route_destid & 0x7));

	if (*route_port > 3)

		ret = -1;



	return ret;

}



DECLARE_RIO_ROUTE_OPS(RIO_VID_TUNDRA, RIO_DID_TSI500, tsi500_route_add_entry, tsi500_route_get_entry);