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/*

 * 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);