/* * Copyright (c) 2005-2009 Brocade Communications Systems, Inc. * All rights reserved * www.brocade.com * * Linux driver for Brocade Fibre Channel Host Bus Adapter. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License (GPL) Version 2 as * published by the Free Software Foundation * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ /** * port_loop.c vport private loop implementation. */ #include #include #include "fcs_lport.h" #include "fcs_rport.h" #include "fcs_trcmod.h" #include "lport_priv.h" BFA_TRC_FILE(FCS, LOOP); /** * ALPA to LIXA bitmap mapping * * ALPA 0x00 (Word 0, Bit 30) is invalid for N_Ports. Also Word 0 Bit 31 * is for L_bit (login required) and is filled as ALPA 0x00 here. */ static const u8 port_loop_alpa_map[] = { 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, /* Word 3 Bits 0..7 */ 0xD9, 0xD6, 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, /* Word 3 Bits 8..15 */ 0xCD, 0xCC, 0xCB, 0xCA, 0xC9, 0xC7, 0xC6, 0xC5, /* Word 3 Bits 16..23 */ 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 0xB4, 0xB3, /* Word 3 Bits 24..31 */ 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, /* Word 2 Bits 0..7 */ 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, /* Word 2 Bits 8..15 */ 0x98, 0x97, 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, /* Word 2 Bits 16..23 */ 0x80, 0x7C, 0x7A, 0x79, 0x76, 0x75, 0x74, 0x73, /* Word 2 Bits 24..31 */ 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 0x6A, 0x69, /* Word 1 Bits 0..7 */ 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, /* Word 1 Bits 8..15 */ 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, /* Word 1 Bits 16..23 */ 0x4B, 0x4A, 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, /* Word 1 Bits 24..31 */ 0x3A, 0x39, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, /* Word 0 Bits 0..7 */ 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 0x27, 0x26, /* Word 0 Bits 8..15 */ 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, /* Word 0 Bits 16..23 */ 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01, 0x00, 0x00, /* Word 0 Bits 24..31 */ }; /* * Local Functions */ bfa_status_t bfa_fcs_port_loop_send_plogi(struct bfa_fcs_port_s *port, u8 alpa); void bfa_fcs_port_loop_plogi_response(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg, bfa_status_t req_status, u32 rsp_len, u32 resid_len, struct fchs_s *rsp_fchs); bfa_status_t bfa_fcs_port_loop_send_adisc(struct bfa_fcs_port_s *port, u8 alpa); void bfa_fcs_port_loop_adisc_response(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg, bfa_status_t req_status, u32 rsp_len, u32 resid_len, struct fchs_s *rsp_fchs); bfa_status_t bfa_fcs_port_loop_send_plogi_acc(struct bfa_fcs_port_s *port, u8 alpa); void bfa_fcs_port_loop_plogi_acc_response(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg, bfa_status_t req_status, u32 rsp_len, u32 resid_len, struct fchs_s *rsp_fchs); bfa_status_t bfa_fcs_port_loop_send_adisc_acc(struct bfa_fcs_port_s *port, u8 alpa); void bfa_fcs_port_loop_adisc_acc_response(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg, bfa_status_t req_status, u32 rsp_len, u32 resid_len, struct fchs_s *rsp_fchs); /** * Called by port to initializar in provate LOOP topology. */ void bfa_fcs_port_loop_init(struct bfa_fcs_port_s *port) { } /** * Called by port to notify transition to online state. */ void bfa_fcs_port_loop_online(struct bfa_fcs_port_s *port) { u8 num_alpa = port->port_topo.ploop.num_alpa; u8 *alpa_pos_map = port->port_topo.ploop.alpa_pos_map; struct bfa_fcs_rport_s *r_port; int ii = 0; /* * If the port role is Initiator Mode, create Rports. */ if (port->port_cfg.roles == BFA_PORT_ROLE_FCP_IM) { /* * Check if the ALPA positional bitmap is available. * if not, we send PLOGI to all possible ALPAs. */ if (num_alpa > 0) { for (ii = 0; ii < num_alpa; ii++) { /* * ignore ALPA of bfa port */ if (alpa_pos_map[ii] != port->pid) { r_port = bfa_fcs_rport_create(port, alpa_pos_map[ii]); } } } else { for (ii = 0; ii < MAX_ALPA_COUNT; ii++) { /* * ignore ALPA of bfa port */ if ((port_loop_alpa_map[ii] > 0) && (port_loop_alpa_map[ii] != port->pid)) bfa_fcs_port_loop_send_plogi(port, port_loop_alpa_map[ii]); /**TBD */ } } } else { /* * TBD Target Mode ?? */ } } /** * Called by port to notify transition to offline state. */ void bfa_fcs_port_loop_offline(struct bfa_fcs_port_s *port) { } /** * Called by port to notify a LIP on the loop. */ void bfa_fcs_port_loop_lip(struct bfa_fcs_port_s *port) { } /** * Local Functions. */ bfa_status_t bfa_fcs_port_loop_send_plogi(struct bfa_fcs_port_s *port, u8 alpa) { struct fchs_s fchs; struct bfa_fcxp_s *fcxp = NULL; int len; bfa_trc(port->fcs, alpa); fcxp = bfa_fcxp_alloc(NULL, port->fcs->bfa, 0, 0, NULL, NULL, NULL, NULL); bfa_assert(fcxp); len = fc_plogi_build(&fchs, bfa_fcxp_get_reqbuf(fcxp), alpa, bfa_fcs_port_get_fcid(port), 0, port->port_cfg.pwwn, port->port_cfg.nwwn, bfa_pport_get_maxfrsize(port->fcs->bfa)); bfa_fcxp_send(fcxp, NULL, port->fabric->vf_id, port->lp_tag, BFA_FALSE, FC_CLASS_3, len, &fchs, bfa_fcs_port_loop_plogi_response, (void *)port, FC_MAX_PDUSZ, FC_RA_TOV); return BFA_STATUS_OK; } /** * Called by fcxp to notify the Plogi response */ void bfa_fcs_port_loop_plogi_response(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg, bfa_status_t req_status, u32 rsp_len, u32 resid_len, struct fchs_s *rsp_fchs) { struct bfa_fcs_port_s *port = (struct bfa_fcs_port_s *) cbarg; struct fc_logi_s *plogi_resp; struct fc_els_cmd_s *els_cmd; bfa_trc(port->fcs, req_status); /* * Sanity Checks */ if (req_status != BFA_STATUS_OK) { bfa_trc(port->fcs, req_status); /* * @todo * This could mean that the device with this APLA does not * exist on the loop. */ return; } els_cmd = (struct fc_els_cmd_s *) BFA_FCXP_RSP_PLD(fcxp); plogi_resp = (struct fc_logi_s *) els_cmd; if (els_cmd->els_code == FC_ELS_ACC) { bfa_fcs_rport_start(port, rsp_fchs, plogi_resp); } else { bfa_trc(port->fcs, plogi_resp->els_cmd.els_code); bfa_assert(0); } } bfa_status_t bfa_fcs_port_loop_send_plogi_acc(struct bfa_fcs_port_s *port, u8 alpa) { struct fchs_s fchs; struct bfa_fcxp_s *fcxp; int len; bfa_trc(port->fcs, alpa); fcxp = bfa_fcxp_alloc(NULL, port->fcs->bfa, 0, 0, NULL, NULL, NULL, NULL); bfa_assert(fcxp); len = fc_plogi_acc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp), alpa, bfa_fcs_port_get_fcid(port), 0, port->port_cfg.pwwn, port->port_cfg.nwwn, bfa_pport_get_maxfrsize(port->fcs->bfa)); bfa_fcxp_send(fcxp, NULL, port->fabric->vf_id, port->lp_tag, BFA_FALSE, FC_CLASS_3, len, &fchs, bfa_fcs_port_loop_plogi_acc_response, (void *)port, FC_MAX_PDUSZ, 0); /* No response * expected */ return BFA_STATUS_OK; } /* * Plogi Acc Response * We donot do any processing here. */ void bfa_fcs_port_loop_plogi_acc_response(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg, bfa_status_t req_status, u32 rsp_len, u32 resid_len, struct fchs_s *rsp_fchs) { struct bfa_fcs_port_s *port = (struct bfa_fcs_port_s *) cbarg; bfa_trc(port->fcs, port->pid); /* * Sanity Checks */ if (req_status != BFA_STATUS_OK) { bfa_trc(port->fcs, req_status); return; } } bfa_status_t bfa_fcs_port_loop_send_adisc(struct bfa_fcs_port_s *port, u8 alpa) { struct fchs_s fchs; struct bfa_fcxp_s *fcxp; int len; bfa_trc(port->fcs, alpa); fcxp = bfa_fcxp_alloc(NULL, port->fcs->bfa, 0, 0, NULL, NULL, NULL, NULL); bfa_assert(fcxp); len = fc_adisc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp), alpa, bfa_fcs_port_get_fcid(port), 0, port->port_cfg.pwwn, port->port_cfg.nwwn); bfa_fcxp_send(fcxp, NULL, port->fabric->vf_id, port->lp_tag, BFA_FALSE, FC_CLASS_3, len, &fchs, bfa_fcs_port_loop_adisc_response, (void *)port, FC_MAX_PDUSZ, FC_RA_TOV); return BFA_STATUS_OK; } /** * Called by fcxp to notify the ADISC response */ void bfa_fcs_port_loop_adisc_response(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg, bfa_status_t req_status, u32 rsp_len, u32 resid_len, struct fchs_s *rsp_fchs) { struct bfa_fcs_port_s *port = (struct bfa_fcs_port_s *) cbarg; struct bfa_fcs_rport_s *rport; struct fc_adisc_s *adisc_resp; struct fc_els_cmd_s *els_cmd; u32 pid = rsp_fchs->s_id; bfa_trc(port->fcs, req_status); /* * Sanity Checks */ if (req_status != BFA_STATUS_OK) { /* * TBD : we may need to retry certain requests */ bfa_fcxp_free(fcxp); return; } els_cmd = (struct fc_els_cmd_s *) BFA_FCXP_RSP_PLD(fcxp); adisc_resp = (struct fc_adisc_s *) els_cmd; if (els_cmd->els_code == FC_ELS_ACC) { } else { bfa_trc(port->fcs, adisc_resp->els_cmd.els_code); /* * TBD: we may need to check for reject codes and retry */ rport = bfa_fcs_port_get_rport_by_pid(port, pid); if (rport) { list_del(&rport->qe); bfa_fcs_rport_delete(rport); } } return; } bfa_status_t bfa_fcs_port_loop_send_adisc_acc(struct bfa_fcs_port_s *port, u8 alpa) { struct fchs_s fchs; struct bfa_fcxp_s *fcxp; int len; bfa_trc(port->fcs, alpa); fcxp = bfa_fcxp_alloc(NULL, port->fcs->bfa, 0, 0, NULL, NULL, NULL, NULL); bfa_assert(fcxp); len = fc_adisc_acc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp), alpa, bfa_fcs_port_get_fcid(port), 0, port->port_cfg.pwwn, port->port_cfg.nwwn); bfa_fcxp_send(fcxp, NULL, port->fabric->vf_id, port->lp_tag, BFA_FALSE, FC_CLASS_3, len, &fchs, bfa_fcs_port_loop_adisc_acc_response, (void *)port, FC_MAX_PDUSZ, 0); /* no reponse * expected */ return BFA_STATUS_OK; } /* * Adisc Acc Response * We donot do any processing here. */ void bfa_fcs_port_loop_adisc_acc_response(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg, bfa_status_t req_status, u32 rsp_len, u32 resid_len, struct fchs_s *rsp_fchs) { struct bfa_fcs_port_s *port = (struct bfa_fcs_port_s *) cbarg; bfa_trc(port->fcs, port->pid); /* * Sanity Checks */ if (req_status != BFA_STATUS_OK) { bfa_trc(port->fcs, req_status); return; } }