in qla2xxx/qla_attr.c [1979:2253]
static void qla_set_ini_mode(scsi_qla_host_t *vha, int op)
{
enum {
NO_ACTION,
MODE_CHANGE_ACCEPT,
MODE_CHANGE_NO_ACTION,
TARGET_STILL_ACTIVE,
};
int action = NO_ACTION;
int set_mode = 0;
u8 eo_toggle = 0; /* exchange offload flipped */
switch (vha->qlini_mode) {
case QLA2XXX_INI_MODE_DISABLED:
switch (op) {
case QLA2XXX_INI_MODE_DISABLED:
if (qla_tgt_mode_enabled(vha)) {
if (NEED_EXCH_OFFLOAD(vha->u_ql2xexchoffld) !=
vha->hw->flags.exchoffld_enabled)
eo_toggle = 1;
if (((vha->ql2xexchoffld !=
vha->u_ql2xexchoffld) &&
NEED_EXCH_OFFLOAD(vha->u_ql2xexchoffld)) ||
eo_toggle) {
/*
* The number of exchange to be offload
* was tweaked or offload option was
* flipped
*/
action = MODE_CHANGE_ACCEPT;
} else {
action = MODE_CHANGE_NO_ACTION;
}
} else {
action = MODE_CHANGE_NO_ACTION;
}
break;
case QLA2XXX_INI_MODE_EXCLUSIVE:
if (qla_tgt_mode_enabled(vha)) {
if (NEED_EXCH_OFFLOAD(vha->u_ql2xexchoffld) !=
vha->hw->flags.exchoffld_enabled)
eo_toggle = 1;
if (((vha->ql2xexchoffld !=
vha->u_ql2xexchoffld) &&
NEED_EXCH_OFFLOAD(vha->u_ql2xexchoffld)) ||
eo_toggle) {
/*
* The number of exchange to be offload
* was tweaked or offload option was
* flipped
*/
action = MODE_CHANGE_ACCEPT;
} else {
action = MODE_CHANGE_NO_ACTION;
}
} else {
action = MODE_CHANGE_ACCEPT;
}
break;
case QLA2XXX_INI_MODE_DUAL:
action = MODE_CHANGE_ACCEPT;
/* active_mode is target only, reset it to dual */
if (qla_tgt_mode_enabled(vha)) {
set_mode = 1;
action = MODE_CHANGE_ACCEPT;
} else {
action = MODE_CHANGE_NO_ACTION;
}
break;
case QLA2XXX_INI_MODE_ENABLED:
if (qla_tgt_mode_enabled(vha))
action = TARGET_STILL_ACTIVE;
else {
action = MODE_CHANGE_ACCEPT;
set_mode = 1;
}
break;
}
break;
case QLA2XXX_INI_MODE_EXCLUSIVE:
switch (op) {
case QLA2XXX_INI_MODE_EXCLUSIVE:
if (qla_tgt_mode_enabled(vha)) {
if (NEED_EXCH_OFFLOAD(vha->u_ql2xexchoffld) !=
vha->hw->flags.exchoffld_enabled)
eo_toggle = 1;
if (((vha->ql2xexchoffld !=
vha->u_ql2xexchoffld) &&
NEED_EXCH_OFFLOAD(vha->u_ql2xexchoffld)) ||
eo_toggle)
/*
* The number of exchange to be offload
* was tweaked or offload option was
* flipped
*/
action = MODE_CHANGE_ACCEPT;
else
action = NO_ACTION;
} else
action = NO_ACTION;
break;
case QLA2XXX_INI_MODE_DISABLED:
if (qla_tgt_mode_enabled(vha)) {
if (NEED_EXCH_OFFLOAD(vha->u_ql2xexchoffld) !=
vha->hw->flags.exchoffld_enabled)
eo_toggle = 1;
if (((vha->ql2xexchoffld !=
vha->u_ql2xexchoffld) &&
NEED_EXCH_OFFLOAD(vha->u_ql2xexchoffld)) ||
eo_toggle)
action = MODE_CHANGE_ACCEPT;
else
action = MODE_CHANGE_NO_ACTION;
} else
action = MODE_CHANGE_NO_ACTION;
break;
case QLA2XXX_INI_MODE_DUAL: /* exclusive -> dual */
if (qla_tgt_mode_enabled(vha)) {
action = MODE_CHANGE_ACCEPT;
set_mode = 1;
} else
action = MODE_CHANGE_ACCEPT;
break;
case QLA2XXX_INI_MODE_ENABLED:
if (qla_tgt_mode_enabled(vha))
action = TARGET_STILL_ACTIVE;
else {
if (vha->hw->flags.fw_started)
action = MODE_CHANGE_NO_ACTION;
else
action = MODE_CHANGE_ACCEPT;
}
break;
}
break;
case QLA2XXX_INI_MODE_ENABLED:
switch (op) {
case QLA2XXX_INI_MODE_ENABLED:
if (NEED_EXCH_OFFLOAD(vha->u_ql2xiniexchg) !=
vha->hw->flags.exchoffld_enabled)
eo_toggle = 1;
if (((vha->ql2xiniexchg != vha->u_ql2xiniexchg) &&
NEED_EXCH_OFFLOAD(vha->u_ql2xiniexchg)) ||
eo_toggle)
action = MODE_CHANGE_ACCEPT;
else
action = NO_ACTION;
break;
case QLA2XXX_INI_MODE_DUAL:
case QLA2XXX_INI_MODE_DISABLED:
action = MODE_CHANGE_ACCEPT;
break;
default:
action = MODE_CHANGE_NO_ACTION;
break;
}
break;
case QLA2XXX_INI_MODE_DUAL:
switch (op) {
case QLA2XXX_INI_MODE_DUAL:
if (qla_tgt_mode_enabled(vha) ||
qla_dual_mode_enabled(vha)) {
if (NEED_EXCH_OFFLOAD(vha->u_ql2xexchoffld +
vha->u_ql2xiniexchg) !=
vha->hw->flags.exchoffld_enabled)
eo_toggle = 1;
if ((((vha->ql2xexchoffld +
vha->ql2xiniexchg) !=
(vha->u_ql2xiniexchg +
vha->u_ql2xexchoffld)) &&
NEED_EXCH_OFFLOAD(vha->u_ql2xiniexchg +
vha->u_ql2xexchoffld)) || eo_toggle)
action = MODE_CHANGE_ACCEPT;
else
action = NO_ACTION;
} else {
if (NEED_EXCH_OFFLOAD(vha->u_ql2xexchoffld +
vha->u_ql2xiniexchg) !=
vha->hw->flags.exchoffld_enabled)
eo_toggle = 1;
if ((((vha->ql2xexchoffld + vha->ql2xiniexchg)
!= (vha->u_ql2xiniexchg +
vha->u_ql2xexchoffld)) &&
NEED_EXCH_OFFLOAD(vha->u_ql2xiniexchg +
vha->u_ql2xexchoffld)) || eo_toggle)
action = MODE_CHANGE_NO_ACTION;
else
action = NO_ACTION;
}
break;
case QLA2XXX_INI_MODE_DISABLED:
if (qla_tgt_mode_enabled(vha) ||
qla_dual_mode_enabled(vha)) {
/* turning off initiator mode */
set_mode = 1;
action = MODE_CHANGE_ACCEPT;
} else {
action = MODE_CHANGE_NO_ACTION;
}
break;
case QLA2XXX_INI_MODE_EXCLUSIVE:
if (qla_tgt_mode_enabled(vha) ||
qla_dual_mode_enabled(vha)) {
set_mode = 1;
action = MODE_CHANGE_ACCEPT;
} else {
action = MODE_CHANGE_ACCEPT;
}
break;
case QLA2XXX_INI_MODE_ENABLED:
if (qla_tgt_mode_enabled(vha) ||
qla_dual_mode_enabled(vha)) {
action = TARGET_STILL_ACTIVE;
} else {
action = MODE_CHANGE_ACCEPT;
}
}
break;
}
switch (action) {
case MODE_CHANGE_ACCEPT:
ql_log(ql_log_warn, vha, 0xffff,
"Mode change accepted. From %s to %s, Tgt exchg %d|%d. ini exchg %d|%d\n",
mode_to_str[vha->qlini_mode], mode_to_str[op],
vha->ql2xexchoffld, vha->u_ql2xexchoffld,
vha->ql2xiniexchg, vha->u_ql2xiniexchg);
vha->qlini_mode = op;
vha->ql2xexchoffld = vha->u_ql2xexchoffld;
vha->ql2xiniexchg = vha->u_ql2xiniexchg;
if (set_mode)
qlt_set_mode(vha);
vha->flags.online = 1;
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
break;
case MODE_CHANGE_NO_ACTION:
ql_log(ql_log_warn, vha, 0xffff,
"Mode is set. No action taken. From %s to %s, Tgt exchg %d|%d. ini exchg %d|%d\n",
mode_to_str[vha->qlini_mode], mode_to_str[op],
vha->ql2xexchoffld, vha->u_ql2xexchoffld,
vha->ql2xiniexchg, vha->u_ql2xiniexchg);
vha->qlini_mode = op;
vha->ql2xexchoffld = vha->u_ql2xexchoffld;
vha->ql2xiniexchg = vha->u_ql2xiniexchg;
break;
case TARGET_STILL_ACTIVE:
ql_log(ql_log_warn, vha, 0xffff,
"Target Mode is active. Unable to change Mode.\n");
break;
case NO_ACTION:
default:
ql_log(ql_log_warn, vha, 0xffff,
"Mode unchange. No action taken. %d|%d pct %d|%d.\n",
vha->qlini_mode, op,
vha->ql2xexchoffld, vha->u_ql2xexchoffld);
break;
}
}