1 /* 2 * IDT CPS RapidIO switches support 3 * 4 * Copyright 2009-2010 Integrated Device Technology, Inc. 5 * Alexandre Bounine <alexandre.bounine@idt.com> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; either version 2 of the License, or (at your 10 * option) any later version. 11 */ 12 13 #include <linux/rio.h> 14 #include <linux/rio_drv.h> 15 #include <linux/rio_ids.h> 16 #include "../rio.h" 17 18 #define CPS_DEFAULT_ROUTE 0xde 19 #define CPS_NO_ROUTE 0xdf 20 21 #define IDTCPS_RIO_DOMAIN 0xf20020 22 23 static int 24 idtcps_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, 25 u16 table, u16 route_destid, u8 route_port) 26 { 27 u32 result; 28 29 if (table == RIO_GLOBAL_TABLE) { 30 rio_mport_write_config_32(mport, destid, hopcount, 31 RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid); 32 33 rio_mport_read_config_32(mport, destid, hopcount, 34 RIO_STD_RTE_CONF_PORT_SEL_CSR, &result); 35 36 result = (0xffffff00 & result) | (u32)route_port; 37 rio_mport_write_config_32(mport, destid, hopcount, 38 RIO_STD_RTE_CONF_PORT_SEL_CSR, result); 39 } 40 41 return 0; 42 } 43 44 static int 45 idtcps_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, 46 u16 table, u16 route_destid, u8 *route_port) 47 { 48 u32 result; 49 50 if (table == RIO_GLOBAL_TABLE) { 51 rio_mport_write_config_32(mport, destid, hopcount, 52 RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid); 53 54 rio_mport_read_config_32(mport, destid, hopcount, 55 RIO_STD_RTE_CONF_PORT_SEL_CSR, &result); 56 57 if (CPS_DEFAULT_ROUTE == (u8)result || 58 CPS_NO_ROUTE == (u8)result) 59 *route_port = RIO_INVALID_ROUTE; 60 else 61 *route_port = (u8)result; 62 } 63 64 return 0; 65 } 66 67 static int 68 idtcps_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount, 69 u16 table) 70 { 71 u32 i; 72 73 if (table == RIO_GLOBAL_TABLE) { 74 for (i = 0x80000000; i <= 0x800000ff;) { 75 rio_mport_write_config_32(mport, destid, hopcount, 76 RIO_STD_RTE_CONF_DESTID_SEL_CSR, i); 77 rio_mport_write_config_32(mport, destid, hopcount, 78 RIO_STD_RTE_CONF_PORT_SEL_CSR, 79 (CPS_DEFAULT_ROUTE << 24) | 80 (CPS_DEFAULT_ROUTE << 16) | 81 (CPS_DEFAULT_ROUTE << 8) | CPS_DEFAULT_ROUTE); 82 i += 4; 83 } 84 } 85 86 return 0; 87 } 88 89 static int 90 idtcps_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount, 91 u8 sw_domain) 92 { 93 /* 94 * Switch domain configuration operates only at global level 95 */ 96 rio_mport_write_config_32(mport, destid, hopcount, 97 IDTCPS_RIO_DOMAIN, (u32)sw_domain); 98 return 0; 99 } 100 101 static int 102 idtcps_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount, 103 u8 *sw_domain) 104 { 105 u32 regval; 106 107 /* 108 * Switch domain configuration operates only at global level 109 */ 110 rio_mport_read_config_32(mport, destid, hopcount, 111 IDTCPS_RIO_DOMAIN, ®val); 112 113 *sw_domain = (u8)(regval & 0xff); 114 115 return 0; 116 } 117 118 static int idtcps_switch_init(struct rio_dev *rdev, int do_enum) 119 { 120 pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev)); 121 rdev->rswitch->add_entry = idtcps_route_add_entry; 122 rdev->rswitch->get_entry = idtcps_route_get_entry; 123 rdev->rswitch->clr_table = idtcps_route_clr_table; 124 rdev->rswitch->set_domain = idtcps_set_domain; 125 rdev->rswitch->get_domain = idtcps_get_domain; 126 rdev->rswitch->em_init = NULL; 127 rdev->rswitch->em_handle = NULL; 128 129 if (do_enum) { 130 /* set TVAL = ~50us */ 131 rio_write_config_32(rdev, 132 rdev->phys_efptr + RIO_PORT_LINKTO_CTL_CSR, 0x8e << 8); 133 } 134 135 return 0; 136 } 137 138 DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS6Q, idtcps_switch_init); 139 DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS8, idtcps_switch_init); 140 DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS10Q, idtcps_switch_init); 141 DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS12, idtcps_switch_init); 142 DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS16, idtcps_switch_init); 143 DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDT70K200, idtcps_switch_init); 144