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
This diff is collapsed.
#
# Makefile for RIO switches
#
obj-$(CONFIG_RAPIDIO) += tsi500.o
/*
* 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);
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