path: root/drivers/scsi/bfa/bfa_fcbuild.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
 * Copyright (c) 2014- QLogic Corporation.
 * All rights reserved
 * www.qlogic.com
 *
 * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
 */
/*
 * fcbuild.c - FC link service frame building and parsing routines
 */

#include "bfad_drv.h"
#include "bfa_fcbuild.h"

/*
 * static build functions
 */
static void     fc_els_rsp_build(struct fchs_s *fchs, u32 d_id, u32 s_id,
				 __be16 ox_id);
static void     fc_bls_rsp_build(struct fchs_s *fchs, u32 d_id, u32 s_id,
				 __be16 ox_id);
static struct fchs_s fc_els_req_tmpl;
static struct fchs_s fc_els_rsp_tmpl;
static struct fchs_s fc_bls_req_tmpl;
static struct fchs_s fc_bls_rsp_tmpl;
static struct fc_ba_acc_s ba_acc_tmpl;
static struct fc_logi_s plogi_tmpl;
static struct fc_prli_s prli_tmpl;
static struct fc_rrq_s rrq_tmpl;
static struct fchs_s fcp_fchs_tmpl;

void
fcbuild_init(void)
{
	/*
	 * fc_els_req_tmpl
	 */
	fc_els_req_tmpl.routing = FC_RTG_EXT_LINK;
	fc_els_req_tmpl.cat_info = FC_CAT_LD_REQUEST;
	fc_els_req_tmpl.type = FC_TYPE_ELS;
	fc_els_req_tmpl.f_ctl =
		bfa_hton3b(FCTL_SEQ_INI | FCTL_FS_EXCH | FCTL_END_SEQ |
			      FCTL_SI_XFER);
	fc_els_req_tmpl.rx_id = FC_RXID_ANY;

	/*
	 * fc_els_rsp_tmpl
	 */
	fc_els_rsp_tmpl.routing = FC_RTG_EXT_LINK;
	fc_els_rsp_tmpl.cat_info = FC_CAT_LD_REPLY;
	fc_els_rsp_tmpl.type = FC_TYPE_ELS;
	fc_els_rsp_tmpl.f_ctl =
		bfa_hton3b(FCTL_EC_RESP | FCTL_SEQ_INI | FCTL_LS_EXCH |
			      FCTL_END_SEQ | FCTL_SI_XFER);
	fc_els_rsp_tmpl.rx_id = FC_RXID_ANY;

	/*
	 * fc_bls_req_tmpl
	 */
	fc_bls_req_tmpl.routing = FC_RTG_BASIC_LINK;
	fc_bls_req_tmpl.type = FC_TYPE_BLS;
	fc_bls_req_tmpl.f_ctl = bfa_hton3b(FCTL_END_SEQ | FCTL_SI_XFER);
	fc_bls_req_tmpl.rx_id = FC_RXID_ANY;

	/*
	 * fc_bls_rsp_tmpl
	 */
	fc_bls_rsp_tmpl.routing = FC_RTG_BASIC_LINK;
	fc_bls_rsp_tmpl.cat_info = FC_CAT_BA_ACC;
	fc_bls_rsp_tmpl.type = FC_TYPE_BLS;
	fc_bls_rsp_tmpl.f_ctl =
		bfa_hton3b(FCTL_EC_RESP | FCTL_SEQ_INI | FCTL_LS_EXCH |
			      FCTL_END_SEQ | FCTL_SI_XFER);
	fc_bls_rsp_tmpl.rx_id = FC_RXID_ANY;

	/*
	 * ba_acc_tmpl
	 */
	ba_acc_tmpl.seq_id_valid = 0;
	ba_acc_tmpl.low_seq_cnt = 0;
	ba_acc_tmpl.high_seq_cnt = 0xFFFF;

	/*
	 * plogi_tmpl
	 */
	plogi_tmpl.csp.verhi = FC_PH_VER_PH_3;
	plogi_tmpl.csp.verlo = FC_PH_VER_4_3;
	plogi_tmpl.csp.ciro = 0x1;
	plogi_tmpl.csp.cisc = 0x0;
	plogi_tmpl.csp.altbbcred = 0x0;
	plogi_tmpl.csp.conseq = cpu_to_be16(0x00FF);
	plogi_tmpl.csp.ro_bitmap = cpu_to_be16(0x0002);
	plogi_tmpl.csp.e_d_tov = cpu_to_be32(2000);

	plogi_tmpl.class3.class_valid = 1;
	plogi_tmpl.class3.sequential = 1;
	plogi_tmpl.class3.conseq = 0xFF;
	plogi_tmpl.class3.ospx = 1;

	/*
	 * prli_tmpl
	 */
	prli_tmpl.command = FC_ELS_PRLI;
	prli_tmpl.pglen = 0x10;
	prli_tmpl.pagebytes = cpu_to_be16(0x0014);
	prli_tmpl.parampage.type = FC_TYPE_FCP;
	prli_tmpl.parampage.imagepair = 1;
	prli_tmpl.parampage.servparams.rxrdisab = 1;

	/*
	 * rrq_tmpl
	 */
	rrq_tmpl.els_cmd.els_code = FC_ELS_RRQ;

	/*
	 * fcp_struct fchs_s mpl
	 */
	fcp_fchs_tmpl.routing = FC_RTG_FC4_DEV_DATA;
	fcp_fchs_tmpl.cat_info = FC_CAT_UNSOLICIT_CMD;
	fcp_fchs_tmpl.type = FC_TYPE_FCP;
	fcp_fchs_tmpl.f_ctl =
		bfa_hton3b(FCTL_FS_EXCH | FCTL_END_SEQ | FCTL_SI_XFER);
	fcp_fchs_tmpl.seq_id = 1;
	fcp_fchs_tmpl.rx_id = FC_RXID_ANY;
}

static void
fc_gs_fchdr_build(struct fchs_s *fchs, u32 d_id, u32 s_id, u32 ox_id)
{
	memset(fchs, 0, sizeof(struct fchs_s));

	fchs->routing = FC_RTG_FC4_DEV_DATA;
	fchs->cat_info = FC_CAT_UNSOLICIT_CTRL;
	fchs->type = FC_TYPE_SERVICES;
	fchs->f_ctl =
		bfa_hton3b(FCTL_SEQ_INI | FCTL_FS_EXCH | FCTL_END_SEQ |
			      FCTL_SI_XFER);
	fchs->rx_id = FC_RXID_ANY;
	fchs->d_id = (d_id);
	fchs->s_id = (s_id);
	fchs->ox_id = cpu_to_be16(ox_id);

	/*
	 * @todo no need to set ox_id for request
	 *       no need to set rx_id for response
	 */
}

static void
fc_gsresp_fchdr_build(struct fchs_s *fchs, u32 d_id, u32 s_id, u16 ox_id)
{
	memset(fchs, 0, sizeof(struct fchs_s));

	fchs->routing = FC_RTG_FC4_DEV_DATA;
	fchs->cat_info = FC_CAT_SOLICIT_CTRL;
	fchs->type = FC_TYPE_SERVICES;
	fchs->f_ctl =
		bfa_hton3b(FCTL_EC_RESP | FCTL_SEQ_INI | FCTL_LS_EXCH |
			   FCTL_END_SEQ | FCTL_SI_XFER);
	fchs->d_id = d_id;
	fchs->s_id =