qla2xxx: Add Dual mode support in the driver
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>
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726b854870
Коммит
ead038556f
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@ -3389,6 +3389,7 @@ struct qla_hw_data {
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#define FLOGI_SP_SUPPORT BIT_13
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uint8_t port_no; /* Physical port of adapter */
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uint8_t exch_starvation;
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/* Timeout timers. */
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uint8_t loop_down_abort_time; /* port down timer */
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@ -1568,8 +1568,7 @@ qla2x00_initialize_adapter(scsi_qla_host_t *vha)
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}
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}
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if (qla_ini_mode_enabled(vha) ||
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qla_dual_mode_enabled(vha))
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if (qla_ini_mode_enabled(vha) || qla_dual_mode_enabled(vha))
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rval = qla2x00_init_rings(vha);
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ha->flags.chip_reset_done = 1;
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@ -3994,7 +3993,8 @@ qla2x00_configure_loop(scsi_qla_host_t *vha)
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* Process any ATIO queue entries that came in
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* while we weren't online.
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*/
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if (qla_tgt_mode_enabled(vha)) {
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if (qla_tgt_mode_enabled(vha) ||
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qla_dual_mode_enabled(vha)) {
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if (IS_QLA27XX(ha) || IS_QLA83XX(ha)) {
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spin_lock_irqsave(&ha->tgt.atio_lock,
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flags);
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@ -1025,7 +1025,8 @@ global_port_update:
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qla2x00_mark_all_devices_lost(vha, 1);
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if (vha->vp_idx == 0 && !qla_ini_mode_enabled(vha))
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if (vha->vp_idx == 0 &&
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(qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
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set_bit(SCR_PENDING, &vha->dpc_flags);
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set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
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@ -1637,6 +1638,7 @@ qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
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fcport->d_id.b.area, fcport->d_id.b.al_pa,
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le32_to_cpu(logio->io_parameter[0]));
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vha->hw->exch_starvation = 0;
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data[0] = MBS_COMMAND_COMPLETE;
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if (sp->type != SRB_LOGIN_CMD)
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goto logio_done;
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@ -1672,6 +1674,21 @@ qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
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case LSC_SCODE_NPORT_USED:
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data[0] = MBS_LOOP_ID_USED;
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break;
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case LSC_SCODE_NOXCB:
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vha->hw->exch_starvation++;
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if (vha->hw->exch_starvation > 5) {
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ql_log(ql_log_warn, vha, 0xffff,
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"Exchange starvation. Resetting RISC\n");
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vha->hw->exch_starvation = 0;
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if (IS_P3P_TYPE(vha->hw))
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set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
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else
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set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
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qla2xxx_wake_dpc(vha);
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}
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/* drop through */
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default:
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data[0] = MBS_COMMAND_ERROR;
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break;
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@ -55,8 +55,17 @@ MODULE_PARM_DESC(qlini_mode,
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"disabled on enabling target mode and then on disabling target mode "
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"enabled back; "
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"\"disabled\" - initiator mode will never be enabled; "
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"\"dual\" - Initiator Modes will be enabled. Target Mode can be activated "
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"when ready "
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"\"enabled\" (default) - initiator mode will always stay enabled.");
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static int ql_dm_tgt_ex_pct = 50;
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module_param(ql_dm_tgt_ex_pct, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(ql_dm_tgt_ex_pct,
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"For Dual Mode (qlini_mode=dual), this parameter determines "
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"the percentage of exchanges/cmds FW will allocate resources "
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"for Target mode.");
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int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
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static int temp_sam_status = SAM_STAT_BUSY;
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@ -1295,7 +1304,8 @@ int qlt_stop_phase1(struct qla_tgt *tgt)
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wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
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/* Big hammer */
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if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
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if (!ha->flags.host_shutting_down &&
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(qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)))
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qlt_disable_vha(vha);
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/* Wait for sessions to clear out (just in case) */
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@ -5266,6 +5276,32 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
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le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
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break;
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case MBA_REJECTED_FCP_CMD:
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xffff,
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"qla_target(%d): Async event LS_REJECT occurred "
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"(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
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le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
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le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
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if (le16_to_cpu(mailbox[3]) == 1) {
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/* exchange starvation. */
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vha->hw->exch_starvation++;
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if (vha->hw->exch_starvation > 5) {
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ql_log(ql_log_warn, vha, 0xffff,
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"Exchange starvation-. Resetting RISC\n");
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vha->hw->exch_starvation = 0;
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if (IS_P3P_TYPE(vha->hw))
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set_bit(FCOE_CTX_RESET_NEEDED,
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&vha->dpc_flags);
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else
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set_bit(ISP_ABORT_NEEDED,
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&vha->dpc_flags);
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qla2xxx_wake_dpc(vha);
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}
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}
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break;
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case MBA_PORT_UPDATE:
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d,
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"qla_target(%d): Port update async event %#x "
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@ -5275,10 +5311,11 @@ void qlt_async_event(uint16_t code, struct scsi_qla_host *vha,
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le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
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login_code = le16_to_cpu(mailbox[2]);
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if (login_code == 0x4)
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if (login_code == 0x4) {
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
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"Async MB 2: Got PLOGI Complete\n");
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else if (login_code == 0x7)
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vha->hw->exch_starvation = 0;
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} else if (login_code == 0x7)
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
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"Async MB 2: Port Logged Out\n");
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break;
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@ -5829,7 +5866,10 @@ static void qlt_set_mode(struct scsi_qla_host *vha)
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vha->host->active_mode = MODE_TARGET;
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break;
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case QLA2XXX_INI_MODE_ENABLED:
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vha->host->active_mode |= MODE_TARGET;
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vha->host->active_mode = MODE_UNKNOWN;
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break;
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case QLA2XXX_INI_MODE_DUAL:
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vha->host->active_mode = MODE_DUAL;
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break;
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default:
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break;
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@ -5852,8 +5892,8 @@ static void qlt_clear_mode(struct scsi_qla_host *vha)
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vha->host->active_mode = MODE_INITIATOR;
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break;
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case QLA2XXX_INI_MODE_ENABLED:
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vha->host->active_mode &= ~MODE_TARGET;
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vha->host->active_mode |= MODE_INITIATOR;
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case QLA2XXX_INI_MODE_DUAL:
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vha->host->active_mode = MODE_INITIATOR;
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break;
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default:
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break;
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@ -5948,9 +5988,6 @@ static void qlt_disable_vha(struct scsi_qla_host *vha)
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void
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qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
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{
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if (!qla_tgt_mode_enabled(vha))
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return;
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vha->vha_tgt.qla_tgt = NULL;
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mutex_init(&vha->vha_tgt.tgt_mutex);
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@ -5981,7 +6018,6 @@ qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
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ct_req->req.rff_id.fc4_feature = BIT_1;
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} else if (qla_dual_mode_enabled(vha))
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ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
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}
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/*
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@ -6000,7 +6036,7 @@ qlt_init_atio_q_entries(struct scsi_qla_host *vha)
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uint16_t cnt;
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struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring;
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if (!qla_tgt_mode_enabled(vha))
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if (qla_ini_mode_enabled(vha))
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return;
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for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
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@ -6093,8 +6129,10 @@ void
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qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
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{
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struct qla_hw_data *ha = vha->hw;
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u32 tmp;
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u16 t;
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if (qla_tgt_mode_enabled(vha)) {
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if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
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if (!ha->tgt.saved_set) {
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/* We save only once */
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ha->tgt.saved_exchange_count = nv->exchange_count;
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@ -6107,7 +6145,24 @@ qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
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ha->tgt.saved_set = 1;
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}
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nv->exchange_count = cpu_to_le16(0xFFFF);
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if (qla_tgt_mode_enabled(vha)) {
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nv->exchange_count = cpu_to_le16(0xFFFF);
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} else { /* dual */
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if (ql_dm_tgt_ex_pct > 100) {
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ql_dm_tgt_ex_pct = 50;
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} else if (ql_dm_tgt_ex_pct == 100) {
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/* leave some for FW */
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ql_dm_tgt_ex_pct = 95;
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}
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tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
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tmp = tmp/100;
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if (tmp > 0xffff)
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tmp = 0xffff;
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t = tmp & 0xffff;
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nv->exchange_count = cpu_to_le16(t);
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}
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/* Enable target mode */
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nv->firmware_options_1 |= cpu_to_le32(BIT_4);
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@ -6192,11 +6247,13 @@ void
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qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
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{
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struct qla_hw_data *ha = vha->hw;
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u32 tmp;
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u16 t;
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if (!QLA_TGT_MODE_ENABLED())
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return;
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if (qla_tgt_mode_enabled(vha)) {
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if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha)) {
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if (!ha->tgt.saved_set) {
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/* We save only once */
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ha->tgt.saved_exchange_count = nv->exchange_count;
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@ -6209,7 +6266,23 @@ qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv)
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ha->tgt.saved_set = 1;
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}
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nv->exchange_count = cpu_to_le16(0xFFFF);
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if (qla_tgt_mode_enabled(vha)) {
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nv->exchange_count = cpu_to_le16(0xFFFF);
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} else { /* dual */
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if (ql_dm_tgt_ex_pct > 100) {
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ql_dm_tgt_ex_pct = 50;
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} else if (ql_dm_tgt_ex_pct == 100) {
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/* leave some for FW */
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ql_dm_tgt_ex_pct = 95;
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}
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tmp = ha->orig_fw_xcb_count * ql_dm_tgt_ex_pct;
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tmp = tmp/100;
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if (tmp > 0xffff)
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tmp = 0xffff;
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t = tmp & 0xffff;
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nv->exchange_count = cpu_to_le16(t);
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}
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/* Enable target mode */
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nv->firmware_options_1 |= cpu_to_le32(BIT_4);
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@ -6319,10 +6392,11 @@ void
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qlt_modify_vp_config(struct scsi_qla_host *vha,
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struct vp_config_entry_24xx *vpmod)
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{
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if (qla_tgt_mode_enabled(vha))
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/* enable target mode. Bit5 = 1 => disable */
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if (qla_tgt_mode_enabled(vha) || qla_dual_mode_enabled(vha))
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vpmod->options_idx1 &= ~BIT_5;
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/* Disable ini mode, if requested. */
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/* Disable ini mode, if requested. bit4 = 1 => disable */
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if (qla_tgt_mode_enabled(vha))
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vpmod->options_idx1 &= ~BIT_4;
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}
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@ -6477,6 +6551,8 @@ static int __init qlt_parse_ini_mode(void)
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ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
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else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
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ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
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else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DUAL) == 0)
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ql2x_ini_mode = QLA2XXX_INI_MODE_DUAL;
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else
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return false;
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@ -45,10 +45,12 @@
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#define QLA2XXX_INI_MODE_STR_EXCLUSIVE "exclusive"
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#define QLA2XXX_INI_MODE_STR_DISABLED "disabled"
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#define QLA2XXX_INI_MODE_STR_ENABLED "enabled"
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#define QLA2XXX_INI_MODE_STR_DUAL "dual"
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#define QLA2XXX_INI_MODE_EXCLUSIVE 0
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#define QLA2XXX_INI_MODE_DISABLED 1
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#define QLA2XXX_INI_MODE_ENABLED 2
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#define QLA2XXX_INI_MODE_DUAL 3
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#define QLA2XXX_COMMAND_COUNT_INIT 250
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#define QLA2XXX_IMMED_NOTIFY_COUNT_INIT 250
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@ -975,6 +977,7 @@ extern void qlt_update_vp_map(struct scsi_qla_host *, int);
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* is not set. Right now, ha value is ignored.
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*/
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#define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED)
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extern int ql2x_ini_mode;
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static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha)
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@ -1744,7 +1744,7 @@ static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
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(struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
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struct fc_vport_identifiers vport_id;
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if (!qla_tgt_mode_enabled(base_vha)) {
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if (qla_ini_mode_enabled(base_vha)) {
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pr_err("qla2xxx base_vha not enabled for target mode\n");
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return -EPERM;
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}
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