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qla2xxx: Add Dual mode support in the driver

Browse source 
Add switch to allow both Initiator Mode & Target
mode to operate at the same time.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Quinn Tran 2017-01-19 22:28:01 -08:00 committed by Nicholas Bellinger
parent 726b854870
commit ead038556f
6 changed files with 119 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/scsi/qla2xxx/qla_def.h
View file

@ -3389,6 +3389,7 @@ struct qla_hw_data {
#define FLOGI_SP_SUPPORT BIT_13
uint8_t port_no; /* Physical port of adapter */
uint8_t exch_starvation;
/* Timeout timers. */
uint8_t loop_down_abort_time; /* port down timer */

6
drivers/scsi/qla2xxx/qla_init.c
View file

@ -1568,8 +1568,7 @@ qla2x00_initialize_adapter(scsi_qla_host_t *vha)
}
}
if (qla_ini_mode_enabled(vha) ||
qla_dual_mode_enabled(vha))
if (qla_ini_mode_enabled(vha) || qla_dual_mode_enabled(vha))
rval = qla2x00_init_rings(vha);
ha->flags.chip_reset_done = 1;
@ -3994,7 +3993,8 @@ qla2x00_configure_loop(scsi_qla_host_t *vha)
* Process any ATIO queue entries that came in
* while we weren't online.
*/
if (qla_tgt_mode_enabled(vha)) {
if (qla_tgt_mode_enabled(vha) ||
qla_dual_mode_enabled(vha)) {
if (IS_QLA27XX(ha) || IS_QLA83XX(ha)) {
spin_lock_irqsave(&ha->tgt.atio_lock,
flags);

19
drivers/scsi/qla2xxx/qla_isr.c
View file

@ -1025,7 +1025,8 @@ global_port_update:
qla2x00_mark_all_devices_lost(vha, 1);
if (vha->vp_idx == 0 && !qla_ini_mode_enabled(vha))
if (vha->vp_idx == 0 &&
(qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
set_bit(SCR_PENDING, &vha->dpc_flags);
set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
@ -1637,6 +1638,7 @@ qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
fcport->d_id.b.area, fcport->d_id.b.al_pa,
le32_to_cpu(logio->io_parameter[0]));
vha->hw->exch_starvation = 0;
data[0] = MBS_COMMAND_COMPLETE;
if (sp->type != SRB_LOGIN_CMD)
goto logio_done;
@ -1672,6 +1674,21 @@ qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
case LSC_SCODE_NPORT_USED:
data[0] = MBS_LOOP_ID_USED;
break;
case LSC_SCODE_NOXCB:
vha->hw->exch_starvation++;
if (vha->hw->exch_starvation > 5) {
ql_log(ql_log_warn, vha, 0xffff,
"Exchange starvation. Resetting RISC\n");
vha->hw->exch_starvation = 0;
if (IS_P3P_TYPE(vha->hw))
set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
else
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
}
/* drop through */
default:
data[0] = MBS_COMMAND_ERROR;
break;

110
drivers/scsi/qla2xxx/qla_target.c
View file

@ -55,8 +55,17 @@ MODULE_PARM_DESC(qlini_mode,
"disabled on enabling target mode and then on disabling target mode "
"enabled back; "
"\"disabled\" - initiator mode will never be enabled; "
"\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
"when ready "
"\"enabled\" (default) - initiator mode will always stay enabled.");
static int ql_dm_tgt_ex_pct = 50;
module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql_dm_tgt_ex_pct,
"For Dual Mode (qlini_mode=dual), this parameter determines "
"the percentage of exchanges/cmds FW will allocate resources "
"for Target mode.");
int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
static int temp_sam_status = SAM_STAT_BUSY;
@ -1295,7 +1304,8 @@ int qlt_stop_phase1(struct qla_tgt *tgt)
wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
/* Big hammer */
if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
if (!ha->flags.host_shutting_down &&
(qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
qlt_disable_vha(vha);
/* Wait for sessions to clear out (just in case) */
@ -5266,6 +5276,32 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
break;
case MBA_REJECTED_FCP_CMD:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
"qla_target(%d): Async event LS_REJECT occurred "
"(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
if (le16_to_cpu(mailbox[3]) == 1) {
/* exchange starvation. */
vha->hw->exch_starvation++;
if (vha->hw->exch_starvation > 5) {
ql_log(ql_log_warn, vha, 0xffff,
"Exchange starvation-. Resetting RISC\n");
vha->hw->exch_starvation = 0;
if (IS_P3P_TYPE(vha->hw))
set_bit(FCOE_CTX_RESET_NEEDED,
&vha->dpc_flags);
else
set_bit(ISP_ABORT_NEEDED,
&vha->dpc_flags);
qla2xxx_wake_dpc(vha);
}
}
break;
case MBA_PORT_UPDATE:
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
"qla_target(%d): Port update async event %#x "
@ -5275,10 +5311,11 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
login_code = le16_to_cpu(mailbox[2]);
if (login_code == 0x4)
if (login_code == 0x4) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
"Async MB 2: Got PLOGI Complete\n");
else if (login_code == 0x7)
vha->hw->exch_starvation = 0;
} else if (login_code == 0x7)
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
"Async MB 2: Port Logged Out\n");
break;
@ -5829,7 +5866,10 @@ static void qlt_set_mode(struct scsi_qla_host *vha)
vha->host->active_mode = MODE_TARGET;
break;
case QLA2XXX_INI_MODE_ENABLED:
vha->host->active_mode |= MODE_TARGET;
vha->host->active_mode = MODE_UNKNOWN;
break;
case QLA2XXX_INI_MODE_DUAL:
vha->host->active_mode = MODE_DUAL;
break;
default:
break;
@ -5852,8 +5892,8 @@ static void qlt_clear_mode(struct scsi_qla_host *vha)
vha->host->active_mode = MODE_INITIATOR;
break;
case QLA2XXX_INI_MODE_ENABLED:
vha->host->active_mode &= ~MODE_TARGET;
vha->host->active_mode |= MODE_INITIATOR;
case QLA2XXX_INI_MODE_DUAL:
vha->host->active_mode = MODE_INITIATOR;
break;
default:
break;
@ -5948,9 +5988,6 @@ static void qlt_disable_vha(struct scsi_qla_host *vha)
void
qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
{
if (!qla_tgt_mode_enabled(vha))
return;
vha->vha_tgt.qla_tgt = NULL;
mutex_init(&vha->vha_tgt.tgt_mutex);
@ -5981,7 +6018,6 @@ qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
ct_req->req.rff_id.fc4_feature = BIT_1;
} else if (qla_dual_mode_enabled(vha))
ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
}
/*
@ -6000,7 +6036,7 @@ qlt_init_atio_q_entries(struct scsi_qla_host *vha)
uint16_t cnt;
struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
if (!qla_tgt_mode_enabled(vha))
if (qla_ini_mode_enabled(vha))
return;
for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
@ -6093,8 +6129,10 @@ void
qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
{
struct qla_hw_data *ha = vha->hw;
u32 tmp;
u16 t;
if (qla_tgt_mode_enabled(vha)) {
if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
if (!ha->tgt.saved_set) {
/* We save only once */
ha->tgt.saved_exchange_count = nv->exchange_count;
@ -6107,7 +6145,24 @@ qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
ha->tgt.saved_set = 1;
}
nv->exchange_count = cpu_to_le16(0xFFFF);
if (qla_tgt_mode_enabled(vha)) {
nv->exchange_count = cpu_to_le16(0xFFFF);
} else { /* dual */
if (ql_dm_tgt_ex_pct > 100) {
ql_dm_tgt_ex_pct = 50;
} else if (ql_dm_tgt_ex_pct == 100) {
/* leave some for FW */
ql_dm_tgt_ex_pct = 95;
}
tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
tmp = tmp/100;
if (tmp > 0xffff)
tmp = 0xffff;
t = tmp & 0xffff;
nv->exchange_count = cpu_to_le16(t);
}
/* Enable target mode */
nv->firmware_options_1 |= cpu_to_le32(BIT_4);
@ -6192,11 +6247,13 @@ void
qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
{
struct qla_hw_data *ha = vha->hw;
u32 tmp;
u16 t;
if (!QLA_TGT_MODE_ENABLED())
return;
if (qla_tgt_mode_enabled(vha)) {
if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
if (!ha->tgt.saved_set) {
/* We save only once */
ha->tgt.saved_exchange_count = nv->exchange_count;
@ -6209,7 +6266,23 @@ qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
ha->tgt.saved_set = 1;
}
nv->exchange_count = cpu_to_le16(0xFFFF);
if (qla_tgt_mode_enabled(vha)) {
nv->exchange_count = cpu_to_le16(0xFFFF);
} else { /* dual */
if (ql_dm_tgt_ex_pct > 100) {
ql_dm_tgt_ex_pct = 50;
} else if (ql_dm_tgt_ex_pct == 100) {
/* leave some for FW */
ql_dm_tgt_ex_pct = 95;
}
tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
tmp = tmp/100;
if (tmp > 0xffff)
tmp = 0xffff;
t = tmp & 0xffff;
nv->exchange_count = cpu_to_le16(t);
}
/* Enable target mode */
nv->firmware_options_1 |= cpu_to_le32(BIT_4);
@ -6319,10 +6392,11 @@ void
qlt_modify_vp_config(struct scsi_qla_host *vha,
struct vp_config_entry_24xx *vpmod)
{
if (qla_tgt_mode_enabled(vha))
/* enable target mode. Bit5 = 1 => disable */
if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
vpmod->options_idx1 &= ~BIT_5;
/* Disable ini mode, if requested. */
/* Disable ini mode, if requested. bit4 = 1 => disable */
if (qla_tgt_mode_enabled(vha))
vpmod->options_idx1 &= ~BIT_4;
}
@ -6477,6 +6551,8 @@ static int __init qlt_parse_ini_mode(void)
ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
else
return false;

3
drivers/scsi/qla2xxx/qla_target.h
View file

@ -45,10 +45,12 @@
#define QLA2XXX_INI_MODE_STR_EXCLUSIVE "exclusive"
#define QLA2XXX_INI_MODE_STR_DISABLED "disabled"
#define QLA2XXX_INI_MODE_STR_ENABLED "enabled"
#define QLA2XXX_INI_MODE_STR_DUAL "dual"
#define QLA2XXX_INI_MODE_EXCLUSIVE 0
#define QLA2XXX_INI_MODE_DISABLED 1
#define QLA2XXX_INI_MODE_ENABLED 2
#define QLA2XXX_INI_MODE_DUAL 3
#define QLA2XXX_COMMAND_COUNT_INIT 250
#define QLA2XXX_IMMED_NOTIFY_COUNT_INIT 250
@ -975,6 +977,7 @@ extern void qlt_update_vp_map(struct scsi_qla_host *, int);
* is not set. Right now, ha value is ignored.
*/
#define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED)
extern int ql2x_ini_mode;
static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha)

2
drivers/scsi/qla2xxx/tcm_qla2xxx.c
View file

@ -1744,7 +1744,7 @@ static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
(struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
struct fc_vport_identifiers vport_id;
if (!qla_tgt_mode_enabled(base_vha)) {
if (qla_ini_mode_enabled(base_vha)) {
pr_err("qla2xxx base_vha not enabled for target mode\n");
return -EPERM;
}