| /* |
| * 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 <bfa.h> |
| #include <bfa_svc.h> |
| #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; |
| } |
| } |
