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/*
* IDT CPS RapidIO switches support
*
* Copyright 2009-2010 Integrated Device Technology, Inc.
* Alexandre Bounine <alexandre.bounine@idt.com>
*
* 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"
#define CPS_NO_ROUTE 0xdf
static int
idtcps_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table, u16 route_destid, u8 route_port)
{
u32 result;
if (table == RIO_GLOBAL_TABLE) {
rio_mport_write_config_32(mport, destid, hopcount,
RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid);
rio_mport_read_config_32(mport, destid, hopcount,
RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
result = (0xffffff00 & result) | (u32)route_port;
rio_mport_write_config_32(mport, destid, hopcount,
RIO_STD_RTE_CONF_PORT_SEL_CSR, result);
}
return 0;
}
static int
idtcps_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table, u16 route_destid, u8 *route_port)
{
u32 result;
if (table == RIO_GLOBAL_TABLE) {
rio_mport_write_config_32(mport, destid, hopcount,
RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid);
rio_mport_read_config_32(mport, destid, hopcount,
RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
if (CPS_NO_ROUTE == (u8)result)
result = RIO_INVALID_ROUTE;
*route_port = (u8)result;
}
return 0;
}
static int
idtcps_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table)
{
u32 i;
if (table == RIO_GLOBAL_TABLE) {
for (i = 0x80000000; i <= 0x800000ff;) {
rio_mport_write_config_32(mport, destid, hopcount,
RIO_STD_RTE_CONF_DESTID_SEL_CSR, i);
rio_mport_write_config_32(mport, destid, hopcount,
RIO_STD_RTE_CONF_PORT_SEL_CSR,
(RIO_INVALID_ROUTE << 24) |
(RIO_INVALID_ROUTE << 16) |
(RIO_INVALID_ROUTE << 8) | RIO_INVALID_ROUTE);
i += 4;
}
}
return 0;
}
static int idtcps_switch_init(struct rio_dev *rdev, int do_enum)
{
pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
rdev->rswitch->add_entry = idtcps_route_add_entry;
rdev->rswitch->get_entry = idtcps_route_get_entry;
rdev->rswitch->clr_table = idtcps_route_clr_table;
rdev->rswitch->em_init = NULL;
rdev->rswitch->em_handle = NULL;
return 0;
}
DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS6Q, idtcps_switch_init);
DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS8, idtcps_switch_init);
DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS10Q, idtcps_switch_init);
DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS12, idtcps_switch_init);
DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS16, idtcps_switch_init);
DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDT70K200, idtcps_switch_init);
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