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Release 4.11 drivers/rapidio/switches/idtcps.c

/*
 * 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 <linux/module.h>
#include "../rio.h"


#define CPS_DEFAULT_ROUTE	0xde

#define CPS_NO_ROUTE		0xdf


#define IDTCPS_RIO_DOMAIN 0xf20020


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 (route_port == RIO_INVALID_ROUTE) route_port = CPS_DEFAULT_ROUTE; 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; }

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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_DEFAULT_ROUTE == (u8)result || CPS_NO_ROUTE == (u8)result) *route_port = RIO_INVALID_ROUTE; else *route_port = (u8)result; } return 0; }

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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, (CPS_DEFAULT_ROUTE << 24) | (CPS_DEFAULT_ROUTE << 16) | (CPS_DEFAULT_ROUTE << 8) | CPS_DEFAULT_ROUTE); i += 4; } } return 0; }

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static int idtcps_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount, u8 sw_domain) { /* * Switch domain configuration operates only at global level */ rio_mport_write_config_32(mport, destid, hopcount, IDTCPS_RIO_DOMAIN, (u32)sw_domain); return 0; }

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static int idtcps_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount, u8 *sw_domain) { u32 regval; /* * Switch domain configuration operates only at global level */ rio_mport_read_config_32(mport, destid, hopcount, IDTCPS_RIO_DOMAIN, &regval); *sw_domain = (u8)(regval & 0xff); return 0; }

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static struct rio_switch_ops idtcps_switch_ops = { .owner = THIS_MODULE, .add_entry = idtcps_route_add_entry, .get_entry = idtcps_route_get_entry, .clr_table = idtcps_route_clr_table, .set_domain = idtcps_set_domain, .get_domain = idtcps_get_domain, .em_init = NULL, .em_handle = NULL, };
static int idtcps_probe(struct rio_dev *rdev, const struct rio_device_id *id) { pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); spin_lock(&rdev->rswitch->lock); if (rdev->rswitch->ops) { spin_unlock(&rdev->rswitch->lock); return -EINVAL; } rdev->rswitch->ops = &idtcps_switch_ops; if (rdev->do_enum) { /* set TVAL = ~50us */ rio_write_config_32(rdev, rdev->phys_efptr + RIO_PORT_LINKTO_CTL_CSR, 0x8e << 8); /* Ensure that default routing is disabled on startup */ rio_write_config_32(rdev, RIO_STD_RTE_DEFAULT_PORT, CPS_NO_ROUTE); } spin_unlock(&rdev->rswitch->lock); return 0; }

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static void idtcps_remove(struct rio_dev *rdev) { pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); spin_lock(&rdev->rswitch->lock); if (rdev->rswitch->ops != &idtcps_switch_ops) { spin_unlock(&rdev->rswitch->lock); return; } rdev->rswitch->ops = NULL; spin_unlock(&rdev->rswitch->lock); }

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static struct rio_device_id idtcps_id_table[] = { {RIO_DEVICE(RIO_DID_IDTCPS6Q, RIO_VID_IDT)}, {RIO_DEVICE(RIO_DID_IDTCPS8, RIO_VID_IDT)}, {RIO_DEVICE(RIO_DID_IDTCPS10Q, RIO_VID_IDT)}, {RIO_DEVICE(RIO_DID_IDTCPS12, RIO_VID_IDT)}, {RIO_DEVICE(RIO_DID_IDTCPS16, RIO_VID_IDT)}, {RIO_DEVICE(RIO_DID_IDT70K200, RIO_VID_IDT)}, { 0, } /* terminate list */ }; static struct rio_driver idtcps_driver = { .name = "idtcps", .id_table = idtcps_id_table, .probe = idtcps_probe, .remove = idtcps_remove, };
static int __init idtcps_init(void) { return rio_register_driver(&idtcps_driver); }

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static void __exit idtcps_exit(void) { rio_unregister_driver(&idtcps_driver); }

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device_initcall(idtcps_init); module_exit(idtcps_exit); MODULE_DESCRIPTION("IDT CPS Gen.1 Serial RapidIO switch family driver"); MODULE_AUTHOR("Integrated Device Technology, Inc."); MODULE_LICENSE("GPL");

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