linux/drivers/scsi/bfa/loop.c
Krishna Gudipati 1c8a4c3749 [SCSI] bfa: Rename pport to fcport in BFA FCS.
Rename pport structures to fcport in BFA FCS, to resolve confusion
about the port structures in the firmware, and make sure the SG page
is setup correctly.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-07 13:05:10 +05:30

213 lines
5.6 KiB
C

/*
* 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
*/
static bfa_status_t bfa_fcs_port_loop_send_plogi(struct bfa_fcs_port_s *port,
u8 alpa);
static 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);
/**
* 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.
*/
static 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_fcport_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
*/
static 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);
}
}