150 lines
4.0 KiB
C
150 lines
4.0 KiB
C
/*
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* IDT CPS RapidIO switches support
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*
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* Copyright 2009-2010 Integrated Device Technology, Inc.
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* Alexandre Bounine <alexandre.bounine@idt.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/rio.h>
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#include <linux/rio_drv.h>
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#include <linux/rio_ids.h>
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#include "../rio.h"
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#define CPS_DEFAULT_ROUTE 0xde
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#define CPS_NO_ROUTE 0xdf
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#define IDTCPS_RIO_DOMAIN 0xf20020
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static int
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idtcps_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
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u16 table, u16 route_destid, u8 route_port)
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{
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u32 result;
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if (route_port == RIO_INVALID_ROUTE)
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route_port = CPS_DEFAULT_ROUTE;
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if (table == RIO_GLOBAL_TABLE) {
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rio_mport_write_config_32(mport, destid, hopcount,
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RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid);
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rio_mport_read_config_32(mport, destid, hopcount,
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RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
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result = (0xffffff00 & result) | (u32)route_port;
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rio_mport_write_config_32(mport, destid, hopcount,
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RIO_STD_RTE_CONF_PORT_SEL_CSR, result);
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}
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return 0;
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}
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static int
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idtcps_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
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u16 table, u16 route_destid, u8 *route_port)
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{
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u32 result;
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if (table == RIO_GLOBAL_TABLE) {
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rio_mport_write_config_32(mport, destid, hopcount,
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RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid);
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rio_mport_read_config_32(mport, destid, hopcount,
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RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
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if (CPS_DEFAULT_ROUTE == (u8)result ||
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CPS_NO_ROUTE == (u8)result)
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*route_port = RIO_INVALID_ROUTE;
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else
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*route_port = (u8)result;
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}
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return 0;
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}
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static int
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idtcps_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
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u16 table)
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{
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u32 i;
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if (table == RIO_GLOBAL_TABLE) {
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for (i = 0x80000000; i <= 0x800000ff;) {
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rio_mport_write_config_32(mport, destid, hopcount,
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RIO_STD_RTE_CONF_DESTID_SEL_CSR, i);
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rio_mport_write_config_32(mport, destid, hopcount,
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RIO_STD_RTE_CONF_PORT_SEL_CSR,
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(CPS_DEFAULT_ROUTE << 24) |
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(CPS_DEFAULT_ROUTE << 16) |
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(CPS_DEFAULT_ROUTE << 8) | CPS_DEFAULT_ROUTE);
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i += 4;
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}
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}
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return 0;
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}
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static int
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idtcps_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
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u8 sw_domain)
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{
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/*
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* Switch domain configuration operates only at global level
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*/
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rio_mport_write_config_32(mport, destid, hopcount,
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IDTCPS_RIO_DOMAIN, (u32)sw_domain);
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return 0;
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}
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static int
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idtcps_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
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u8 *sw_domain)
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{
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u32 regval;
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/*
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* Switch domain configuration operates only at global level
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*/
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rio_mport_read_config_32(mport, destid, hopcount,
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IDTCPS_RIO_DOMAIN, ®val);
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*sw_domain = (u8)(regval & 0xff);
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return 0;
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}
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static int idtcps_switch_init(struct rio_dev *rdev, int do_enum)
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{
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pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
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rdev->rswitch->add_entry = idtcps_route_add_entry;
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rdev->rswitch->get_entry = idtcps_route_get_entry;
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rdev->rswitch->clr_table = idtcps_route_clr_table;
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rdev->rswitch->set_domain = idtcps_set_domain;
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rdev->rswitch->get_domain = idtcps_get_domain;
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rdev->rswitch->em_init = NULL;
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rdev->rswitch->em_handle = NULL;
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if (do_enum) {
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/* set TVAL = ~50us */
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rio_write_config_32(rdev,
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rdev->phys_efptr + RIO_PORT_LINKTO_CTL_CSR, 0x8e << 8);
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/* Ensure that default routing is disabled on startup */
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rio_write_config_32(rdev,
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RIO_STD_RTE_DEFAULT_PORT, CPS_NO_ROUTE);
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}
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return 0;
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}
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DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS6Q, idtcps_switch_init);
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DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS8, idtcps_switch_init);
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DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS10Q, idtcps_switch_init);
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DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS12, idtcps_switch_init);
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DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS16, idtcps_switch_init);
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DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDT70K200, idtcps_switch_init);
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