From mboxrd@z Thu Jan 1 00:00:00 1970 From: Himanshu Madhani Subject: [PATCH v4 09/12] qla2xxx: Add Dual mode support in the driver Date: Thu, 19 Jan 2017 22:28:01 -0800 Message-ID: <1484893684-1255-10-git-send-email-himanshu.madhani@cavium.com> References: <1484893684-1255-1-git-send-email-himanshu.madhani@cavium.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from mail-cys01nam02on0045.outbound.protection.outlook.com ([104.47.37.45]:44864 "EHLO NAM02-CY1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751252AbdATG26 (ORCPT ); Fri, 20 Jan 2017 01:28:58 -0500 In-Reply-To: <1484893684-1255-1-git-send-email-himanshu.madhani@cavium.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: target-devel@vger.kernel.org, bart.vanassche@gmail.com, hch@infradead.org, nab@linux-iscsi.org Cc: giridhar.malavali@cavium.com, linux-scsi@vger.kernel.org, himanshu.madhani@cavium.com From: Quinn Tran Add switch to allow both Initiator Mode & Target mode to operate at the same time. Signed-off-by: Quinn Tran Signed-off-by: Himanshu Madhani --- drivers/scsi/qla2xxx/qla_def.h | 1 + drivers/scsi/qla2xxx/qla_init.c | 6 +- drivers/scsi/qla2xxx/qla_isr.c | 19 ++++++- drivers/scsi/qla2xxx/qla_target.c | 110 +++++++++++++++++++++++++++++++------ drivers/scsi/qla2xxx/qla_target.h | 3 + drivers/scsi/qla2xxx/tcm_qla2xxx.c | 2 +- 6 files changed, 119 insertions(+), 22 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 253f991..fd179df 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -3390,6 +3390,7 @@ 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 */ diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 8b7c046..4c0a2d8 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -1568,8 +1568,7 @@ void qla2x00_fcport_event_handler(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 @@ static void qla2xxx_nvram_wwn_from_ofw(scsi_qla_host_t *vha, nvram_t *nv) * 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); diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index 7ad9cdf..c67b52c 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -1029,7 +1029,8 @@ static void qla_irq_affinity_notify(struct irq_affinity_notify *, 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); @@ -1641,6 +1642,7 @@ static void qla_irq_affinity_notify(struct irq_affinity_notify *, 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; @@ -1676,6 +1678,21 @@ static void qla_irq_affinity_notify(struct irq_affinity_notify *, 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; diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index b5cfab0..225d2bf 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -55,8 +55,17 @@ "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) */ @@ -5263,6 +5273,32 @@ 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 " @@ -5272,10 +5308,11 @@ 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; @@ -5826,7 +5863,10 @@ 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; @@ -5849,8 +5889,8 @@ 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; @@ -5945,9 +5985,6 @@ 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); @@ -5978,7 +6015,6 @@ static void qlt_disable_vha(struct scsi_qla_host *vha) 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; - } /* @@ -5997,7 +6033,7 @@ static void qlt_disable_vha(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++) { @@ -6090,8 +6126,10 @@ static void qlt_disable_vha(struct scsi_qla_host *vha) 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; @@ -6104,7 +6142,24 @@ static void qlt_disable_vha(struct scsi_qla_host *vha) 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); @@ -6189,11 +6244,13 @@ static void qlt_disable_vha(struct scsi_qla_host *vha) 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; @@ -6206,7 +6263,23 @@ static void qlt_disable_vha(struct scsi_qla_host *vha) 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); @@ -6316,10 +6389,11 @@ static void qlt_disable_vha(struct scsi_qla_host *vha) 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; } @@ -6474,6 +6548,8 @@ 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; diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h index 5e56192..ac86b37 100644 --- a/drivers/scsi/qla2xxx/qla_target.h +++ b/drivers/scsi/qla2xxx/qla_target.h @@ -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 int qlt_lport_register(void *, u64, u64, u64, * 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) diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index e37d7ee..8b878a2 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -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; } -- 1.8.3.1