1/* 2 * RapidIO Tsi500 switch support 3 * 4 * Copyright 2009-2010 Integrated Device Technology, Inc. 5 * Alexandre Bounine <alexandre.bounine@idt.com> 6 * - Modified switch operations initialization. 7 * 8 * Copyright 2005 MontaVista Software, Inc. 9 * Matt Porter <mporter@kernel.crashing.org> 10 * 11 * This program is free software; you can redistribute it and/or modify it 12 * under the terms of the GNU General Public License as published by the 13 * Free Software Foundation; either version 2 of the License, or (at your 14 * option) any later version. 15 */ 16 17#include <linux/rio.h> 18#include <linux/rio_drv.h> 19#include <linux/rio_ids.h> 20#include "../rio.h" 21 22static int 23tsi500_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, u16 table, u16 route_destid, u8 route_port) 24{ 25 int i; 26 u32 offset = 0x10000 + 0xa00 + ((route_destid / 2)&~0x3); 27 u32 result; 28 29 if (table == 0xff) { 30 rio_mport_read_config_32(mport, destid, hopcount, offset, &result); 31 result &= ~(0xf << (4*(route_destid & 0x7))); 32 for (i=0;i<4;i++) 33 rio_mport_write_config_32(mport, destid, hopcount, offset + (0x20000*i), result | (route_port << (4*(route_destid & 0x7)))); 34 } 35 else { 36 rio_mport_read_config_32(mport, destid, hopcount, offset + (0x20000*table), &result); 37 result &= ~(0xf << (4*(route_destid & 0x7))); 38 rio_mport_write_config_32(mport, destid, hopcount, offset + (0x20000*table), result | (route_port << (4*(route_destid & 0x7)))); 39 } 40 41 return 0; 42} 43 44static int 45tsi500_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, u16 table, u16 route_destid, u8 *route_port) 46{ 47 int ret = 0; 48 u32 offset = 0x10000 + 0xa00 + ((route_destid / 2)&~0x3); 49 u32 result; 50 51 if (table == 0xff) 52 rio_mport_read_config_32(mport, destid, hopcount, offset, &result); 53 else 54 rio_mport_read_config_32(mport, destid, hopcount, offset + (0x20000*table), &result); 55 56 result &= 0xf << (4*(route_destid & 0x7)); 57 *route_port = result >> (4*(route_destid & 0x7)); 58 if (*route_port > 3) 59 ret = -1; 60 61 return ret; 62} 63 64static int tsi500_switch_init(struct rio_dev *rdev, int do_enum) 65{ 66 pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); 67 rdev->rswitch->add_entry = tsi500_route_add_entry; 68 rdev->rswitch->get_entry = tsi500_route_get_entry; 69 rdev->rswitch->clr_table = NULL; 70 rdev->rswitch->set_domain = NULL; 71 rdev->rswitch->get_domain = NULL; 72 rdev->rswitch->em_init = NULL; 73 rdev->rswitch->em_handle = NULL; 74 75 return 0; 76} 77 78DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI500, tsi500_switch_init); 79