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