1/* 2 * Copyright (c) 2005-2009 Brocade Communications Systems, Inc. 3 * All rights reserved 4 * www.brocade.com 5 * 6 * Linux driver for Brocade Fibre Channel Host Bus Adapter. 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License (GPL) Version 2 as 10 * published by the Free Software Foundation 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 */ 17 18/** 19 * port_loop.c vport private loop implementation. 20 */ 21#include <bfa.h> 22#include <bfa_svc.h> 23#include "fcs_lport.h" 24#include "fcs_rport.h" 25#include "fcs_trcmod.h" 26#include "lport_priv.h" 27 28BFA_TRC_FILE(FCS, LOOP); 29 30/** 31 * ALPA to LIXA bitmap mapping 32 * 33 * ALPA 0x00 (Word 0, Bit 30) is invalid for N_Ports. Also Word 0 Bit 31 34 * is for L_bit (login required) and is filled as ALPA 0x00 here. 35 */ 36static const u8 port_loop_alpa_map[] = { 37 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, /* Word 3 Bits 0..7 */ 38 0xD9, 0xD6, 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, /* Word 3 Bits 8..15 */ 39 0xCD, 0xCC, 0xCB, 0xCA, 0xC9, 0xC7, 0xC6, 0xC5, /* Word 3 Bits 16..23 */ 40 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 0xB4, 0xB3, /* Word 3 Bits 24..31 */ 41 42 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, /* Word 2 Bits 0..7 */ 43 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, /* Word 2 Bits 8..15 */ 44 0x98, 0x97, 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, /* Word 2 Bits 16..23 */ 45 0x80, 0x7C, 0x7A, 0x79, 0x76, 0x75, 0x74, 0x73, /* Word 2 Bits 24..31 */ 46 47 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 0x6A, 0x69, /* Word 1 Bits 0..7 */ 48 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, /* Word 1 Bits 8..15 */ 49 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, /* Word 1 Bits 16..23 */ 50 0x4B, 0x4A, 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, /* Word 1 Bits 24..31 */ 51 52 0x3A, 0x39, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, /* Word 0 Bits 0..7 */ 53 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 0x27, 0x26, /* Word 0 Bits 8..15 */ 54 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, /* Word 0 Bits 16..23 */ 55 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01, 0x00, 0x00, /* Word 0 Bits 24..31 */ 56}; 57 58/* 59 * Local Functions 60 */ 61static bfa_status_t bfa_fcs_port_loop_send_plogi(struct bfa_fcs_port_s *port, 62 u8 alpa); 63 64static void bfa_fcs_port_loop_plogi_response(void *fcsarg, 65 struct bfa_fcxp_s *fcxp, 66 void *cbarg, 67 bfa_status_t req_status, 68 u32 rsp_len, 69 u32 resid_len, 70 struct fchs_s *rsp_fchs); 71/** 72 * Called by port to initializar in provate LOOP topology. 73 */ 74void 75bfa_fcs_port_loop_init(struct bfa_fcs_port_s *port) 76{ 77} 78 79/** 80 * Called by port to notify transition to online state. 81 */ 82void 83bfa_fcs_port_loop_online(struct bfa_fcs_port_s *port) 84{ 85 86 u8 num_alpa = port->port_topo.ploop.num_alpa; 87 u8 *alpa_pos_map = port->port_topo.ploop.alpa_pos_map; 88 struct bfa_fcs_rport_s *r_port; 89 int ii = 0; 90 91 /* 92 * If the port role is Initiator Mode, create Rports. 93 */ 94 if (port->port_cfg.roles == BFA_PORT_ROLE_FCP_IM) { 95 /* 96 * Check if the ALPA positional bitmap is available. 97 * if not, we send PLOGI to all possible ALPAs. 98 */ 99 if (num_alpa > 0) { 100 for (ii = 0; ii < num_alpa; ii++) { 101 /* 102 * ignore ALPA of bfa port 103 */ 104 if (alpa_pos_map[ii] != port->pid) { 105 r_port = bfa_fcs_rport_create(port, 106 alpa_pos_map[ii]); 107 } 108 } 109 } else { 110 for (ii = 0; ii < MAX_ALPA_COUNT; ii++) { 111 /* 112 * ignore ALPA of bfa port 113 */ 114 if ((port_loop_alpa_map[ii] > 0) 115 && (port_loop_alpa_map[ii] != port->pid)) 116 bfa_fcs_port_loop_send_plogi(port, 117 port_loop_alpa_map[ii]); 118 /**TBD */ 119 } 120 } 121 } else { 122 /* 123 * TBD Target Mode ?? 124 */ 125 } 126 127} 128 129/** 130 * Called by port to notify transition to offline state. 131 */ 132void 133bfa_fcs_port_loop_offline(struct bfa_fcs_port_s *port) 134{ 135 136} 137 138/** 139 * Called by port to notify a LIP on the loop. 140 */ 141void 142bfa_fcs_port_loop_lip(struct bfa_fcs_port_s *port) 143{ 144} 145 146/** 147 * Local Functions. 148 */ 149static bfa_status_t 150bfa_fcs_port_loop_send_plogi(struct bfa_fcs_port_s *port, u8 alpa) 151{ 152 struct fchs_s fchs; 153 struct bfa_fcxp_s *fcxp = NULL; 154 int len; 155 156 bfa_trc(port->fcs, alpa); 157 158 fcxp = bfa_fcxp_alloc(NULL, port->fcs->bfa, 0, 0, NULL, NULL, NULL, 159 NULL); 160 bfa_assert(fcxp); 161 162 len = fc_plogi_build(&fchs, bfa_fcxp_get_reqbuf(fcxp), alpa, 163 bfa_fcs_port_get_fcid(port), 0, 164 port->port_cfg.pwwn, port->port_cfg.nwwn, 165 bfa_fcport_get_maxfrsize(port->fcs->bfa)); 166 167 bfa_fcxp_send(fcxp, NULL, port->fabric->vf_id, port->lp_tag, BFA_FALSE, 168 FC_CLASS_3, len, &fchs, 169 bfa_fcs_port_loop_plogi_response, (void *)port, 170 FC_MAX_PDUSZ, FC_RA_TOV); 171 172 return BFA_STATUS_OK; 173} 174 175/** 176 * Called by fcxp to notify the Plogi response 177 */ 178static void 179bfa_fcs_port_loop_plogi_response(void *fcsarg, struct bfa_fcxp_s *fcxp, 180 void *cbarg, bfa_status_t req_status, 181 u32 rsp_len, u32 resid_len, 182 struct fchs_s *rsp_fchs) 183{ 184 struct bfa_fcs_port_s *port = (struct bfa_fcs_port_s *) cbarg; 185 struct fc_logi_s *plogi_resp; 186 struct fc_els_cmd_s *els_cmd; 187 188 bfa_trc(port->fcs, req_status); 189 190 /* 191 * Sanity Checks 192 */ 193 if (req_status != BFA_STATUS_OK) { 194 bfa_trc(port->fcs, req_status); 195 /* 196 * @todo 197 * This could mean that the device with this APLA does not 198 * exist on the loop. 199 */ 200 201 return; 202 } 203 204 els_cmd = (struct fc_els_cmd_s *) BFA_FCXP_RSP_PLD(fcxp); 205 plogi_resp = (struct fc_logi_s *) els_cmd; 206 207 if (els_cmd->els_code == FC_ELS_ACC) { 208 bfa_fcs_rport_start(port, rsp_fchs, plogi_resp); 209 } else { 210 bfa_trc(port->fcs, plogi_resp->els_cmd.els_code); 211 bfa_assert(0); 212 } 213} 214