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195 lines
4.9 KiB
195 lines
4.9 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* RapidIO Tsi568 switch support |
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* |
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* Copyright 2009-2010 Integrated Device Technology, Inc. |
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* Alexandre Bounine <[email protected]> |
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* - Added EM support |
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* - Modified switch operations initialization. |
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* |
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* Copyright 2005 MontaVista Software, Inc. |
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* Matt Porter <[email protected]> |
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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 <linux/delay.h> |
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#include <linux/module.h> |
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#include "../rio.h" |
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/* Global (broadcast) route registers */ |
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#define SPBC_ROUTE_CFG_DESTID 0x10070 |
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#define SPBC_ROUTE_CFG_PORT 0x10074 |
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/* Per port route registers */ |
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#define SPP_ROUTE_CFG_DESTID(n) (0x11070 + 0x100*n) |
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#define SPP_ROUTE_CFG_PORT(n) (0x11074 + 0x100*n) |
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#define TSI568_SP_MODE(n) (0x11004 + 0x100*n) |
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#define TSI568_SP_MODE_PW_DIS 0x08000000 |
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static int |
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tsi568_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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if (table == RIO_GLOBAL_TABLE) { |
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rio_mport_write_config_32(mport, destid, hopcount, |
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SPBC_ROUTE_CFG_DESTID, route_destid); |
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rio_mport_write_config_32(mport, destid, hopcount, |
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SPBC_ROUTE_CFG_PORT, route_port); |
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} else { |
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rio_mport_write_config_32(mport, destid, hopcount, |
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SPP_ROUTE_CFG_DESTID(table), |
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route_destid); |
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rio_mport_write_config_32(mport, destid, hopcount, |
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SPP_ROUTE_CFG_PORT(table), route_port); |
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} |
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udelay(10); |
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return 0; |
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} |
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static int |
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tsi568_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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int ret = 0; |
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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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SPBC_ROUTE_CFG_DESTID, route_destid); |
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rio_mport_read_config_32(mport, destid, hopcount, |
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SPBC_ROUTE_CFG_PORT, &result); |
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} else { |
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rio_mport_write_config_32(mport, destid, hopcount, |
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SPP_ROUTE_CFG_DESTID(table), |
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route_destid); |
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rio_mport_read_config_32(mport, destid, hopcount, |
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SPP_ROUTE_CFG_PORT(table), &result); |
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} |
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*route_port = result; |
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if (*route_port > 15) |
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ret = -1; |
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return ret; |
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} |
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static int |
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tsi568_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 route_idx; |
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u32 lut_size; |
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lut_size = (mport->sys_size) ? 0x1ff : 0xff; |
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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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SPBC_ROUTE_CFG_DESTID, 0x80000000); |
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for (route_idx = 0; route_idx <= lut_size; route_idx++) |
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rio_mport_write_config_32(mport, destid, hopcount, |
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SPBC_ROUTE_CFG_PORT, |
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RIO_INVALID_ROUTE); |
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} else { |
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rio_mport_write_config_32(mport, destid, hopcount, |
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SPP_ROUTE_CFG_DESTID(table), |
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0x80000000); |
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for (route_idx = 0; route_idx <= lut_size; route_idx++) |
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rio_mport_write_config_32(mport, destid, hopcount, |
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SPP_ROUTE_CFG_PORT(table), |
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RIO_INVALID_ROUTE); |
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} |
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return 0; |
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} |
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static int |
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tsi568_em_init(struct rio_dev *rdev) |
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{ |
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u32 regval; |
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int portnum; |
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pr_debug("TSI568 %s [%d:%d]\n", __func__, rdev->destid, rdev->hopcount); |
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/* Make sure that Port-Writes are disabled (for all ports) */ |
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for (portnum = 0; |
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portnum < RIO_GET_TOTAL_PORTS(rdev->swpinfo); portnum++) { |
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rio_read_config_32(rdev, TSI568_SP_MODE(portnum), ®val); |
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rio_write_config_32(rdev, TSI568_SP_MODE(portnum), |
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regval | TSI568_SP_MODE_PW_DIS); |
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} |
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return 0; |
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} |
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static struct rio_switch_ops tsi568_switch_ops = { |
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.owner = THIS_MODULE, |
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.add_entry = tsi568_route_add_entry, |
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.get_entry = tsi568_route_get_entry, |
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.clr_table = tsi568_route_clr_table, |
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.set_domain = NULL, |
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.get_domain = NULL, |
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.em_init = tsi568_em_init, |
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.em_handle = NULL, |
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}; |
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static int tsi568_probe(struct rio_dev *rdev, const struct rio_device_id *id) |
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{ |
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pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); |
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spin_lock(&rdev->rswitch->lock); |
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if (rdev->rswitch->ops) { |
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spin_unlock(&rdev->rswitch->lock); |
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return -EINVAL; |
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} |
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rdev->rswitch->ops = &tsi568_switch_ops; |
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spin_unlock(&rdev->rswitch->lock); |
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return 0; |
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} |
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static void tsi568_remove(struct rio_dev *rdev) |
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{ |
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pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); |
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spin_lock(&rdev->rswitch->lock); |
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if (rdev->rswitch->ops != &tsi568_switch_ops) { |
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spin_unlock(&rdev->rswitch->lock); |
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return; |
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} |
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rdev->rswitch->ops = NULL; |
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spin_unlock(&rdev->rswitch->lock); |
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} |
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static const struct rio_device_id tsi568_id_table[] = { |
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{RIO_DEVICE(RIO_DID_TSI568, RIO_VID_TUNDRA)}, |
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{ 0, } /* terminate list */ |
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}; |
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static struct rio_driver tsi568_driver = { |
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.name = "tsi568", |
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.id_table = tsi568_id_table, |
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.probe = tsi568_probe, |
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.remove = tsi568_remove, |
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}; |
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static int __init tsi568_init(void) |
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{ |
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return rio_register_driver(&tsi568_driver); |
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} |
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static void __exit tsi568_exit(void) |
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{ |
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rio_unregister_driver(&tsi568_driver); |
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} |
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device_initcall(tsi568_init); |
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module_exit(tsi568_exit); |
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MODULE_DESCRIPTION("IDT Tsi568 Serial RapidIO switch driver"); |
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MODULE_AUTHOR("Integrated Device Technology, Inc."); |
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MODULE_LICENSE("GPL");
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