/*
* RapidIO Tsi568 switch support
*
* Copyright 2009-2010 Integrated Device Technology, Inc.
* Alexandre Bounine <alexandre.bounine@idt.com>
* - Added EM support
* - Modified switch operations initialization.
*
* 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 <linux/delay.h>
#include "../rio.h"
/* Global (broadcast) route registers */
#define SPBC_ROUTE_CFG_DESTID 0x10070
#define SPBC_ROUTE_CFG_PORT 0x10074
/* Per port route registers */
#define SPP_ROUTE_CFG_DESTID(n) (0x11070 + 0x100*n)
#define SPP_ROUTE_CFG_PORT(n) (0x11074 + 0x100*n)
#define TSI568_SP_MODE(n) (0x11004 + 0x100*n)
#define TSI568_SP_MODE_PW_DIS 0x08000000
static int
tsi568_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table, u16 route_destid, u8 route_port)
{
if (table == RIO_GLOBAL_TABLE) {
rio_mport_write_config_32(mport, destid, hopcount,
SPBC_ROUTE_CFG_DESTID, route_destid);
rio_mport_write_config_32(mport, destid, hopcount,
SPBC_ROUTE_CFG_PORT, route_port);
} else {
rio_mport_write_config_32(mport, destid, hopcount,
SPP_ROUTE_CFG_DESTID(table),
route_destid);
rio_mport_write_config_32(mport, destid, hopcount,
SPP_ROUTE_CFG_PORT(table), route_port);
}
udelay(10);
return 0;
}
static int
tsi568_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table, u16 route_destid, u8 *route_port)
{
int ret = 0;
u32 result;
if (table == RIO_GLOBAL_TABLE) {
rio_mport_write_config_32(mport, destid, hopcount,
SPBC_ROUTE_CFG_DESTID, route_destid);
rio_mport_read_config_32(mport, destid, hopcount,
SPBC_ROUTE_CFG_PORT, &result);
} else {
rio_mport_write_config_32(mport, destid, hopcount,
SPP_ROUTE_CFG_DESTID(table),
route_destid);
rio_mport_read_config_32(mport, destid, hopcount,
SPP_ROUTE_CFG_PORT(table), &result);
}
*route_port = result;
if (*route_port > 15)
ret = -1;
return ret;
}
static int
tsi568_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table)
{
u32 route_idx;
u32 lut_size;
lut_size = (mport->sys_size) ? 0x1ff : 0xff;
if (table == RIO_GLOBAL_TABLE) {
rio_mport_write_config_32(mport, destid, hopcount,
SPBC_ROUTE_CFG_DESTID, 0x80000000);
for (route_idx = 0; route_idx <= lut_size; route_idx++)
rio_mport_write_config_32(mport, destid, hopcount,
SPBC_ROUTE_CFG_PORT,
RIO_INVALID_ROUTE);
} else {
rio_mport_write_config_32(mport, destid, hopcount,
SPP_ROUTE_CFG_DESTID(table),
0x80000000);
for (route_idx = 0; route_idx <= lut_size; route_idx++)
rio_mport_write_config_32(mport, destid, hopcount,
SPP_ROUTE_CFG_PORT(table),
RIO_INVALID_ROUTE);
}
return 0;
}
static int
tsi568_em_init(struct rio_dev *rdev)
{
u32 regval;
int portnum;
pr_debug("TSI568 %s [%d:%d]\n", __func__, rdev->destid, rdev->hopcount);
/* Make sure that Port-Writes are disabled (for all ports) */
for (portnum = 0;
portnum < RIO_GET_TOTAL_PORTS(rdev->swpinfo); portnum++) {
rio_read_config_32(rdev, TSI568_SP_MODE(portnum), ®val);
rio_write_config_32(rdev, TSI568_SP_MODE(portnum),
regval | TSI568_SP_MODE_PW_DIS);
}
return 0;
}
static int tsi568_switch_init(struct rio_dev *rdev, int do_enum)
{
pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
rdev->rswitch->add_entry = tsi568_route_add_entry;
rdev->rswitch->get_entry = tsi568_route_get_entry;
rdev->rswitch->clr_table = tsi568_route_clr_table;
rdev->rswitch->set_domain = NULL;
rdev->rswitch->get_domain = NULL;
rdev->rswitch->em_init = tsi568_em_init;
rdev->rswitch->em_handle = NULL;
return 0;
}
DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI568, tsi568_switch_init);
