| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx |
| * |
| * based on qla2x00t.c code: |
| * |
| * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> |
| * Copyright (C) 2004 - 2005 Leonid Stoljar |
| * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> |
| * Copyright (C) 2006 - 2010 ID7 Ltd. |
| * |
| * Forward port and refactoring to modern qla2xxx and target/configfs |
| * |
| * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org> |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/types.h> |
| #include <linux/blkdev.h> |
| #include <linux/interrupt.h> |
| #include <linux/pci.h> |
| #include <linux/delay.h> |
| #include <linux/list.h> |
| #include <linux/workqueue.h> |
| #include <asm/unaligned.h> |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsi_tcq.h> |
| |
| #include "qla_def.h" |
| #include "qla_target.h" |
| |
| static int ql2xtgt_tape_enable; |
| module_param(ql2xtgt_tape_enable, int, S_IRUGO|S_IWUSR); |
| MODULE_PARM_DESC(ql2xtgt_tape_enable, |
| "Enables Sequence level error recovery (aka FC Tape). Default is 0 - no SLER. 1 - Enable SLER."); |
| |
| static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; |
| module_param(qlini_mode, charp, S_IRUGO); |
| MODULE_PARM_DESC(qlini_mode, |
| "Determines when initiator mode will be enabled. Possible values: " |
| "\"exclusive\" - initiator mode will be enabled on load, " |
| "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."); |
| |
| int ql2xuctrlirq = 1; |
| module_param(ql2xuctrlirq, int, 0644); |
| MODULE_PARM_DESC(ql2xuctrlirq, |
| "User to control IRQ placement via smp_affinity." |
| "Valid with qlini_mode=disabled." |
| "1(default): enable"); |
| |
| int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; |
| |
| static int qla_sam_status = SAM_STAT_BUSY; |
| static int tc_sam_status = SAM_STAT_TASK_SET_FULL; /* target core */ |
| |
| /* |
| * From scsi/fc/fc_fcp.h |
| */ |
| enum fcp_resp_rsp_codes { |
| FCP_TMF_CMPL = 0, |
| FCP_DATA_LEN_INVALID = 1, |
| FCP_CMND_FIELDS_INVALID = 2, |
| FCP_DATA_PARAM_MISMATCH = 3, |
| FCP_TMF_REJECTED = 4, |
| FCP_TMF_FAILED = 5, |
| FCP_TMF_INVALID_LUN = 9, |
| }; |
| |
| /* |
| * fc_pri_ta from scsi/fc/fc_fcp.h |
| */ |
| #define FCP_PTA_SIMPLE 0 /* simple task attribute */ |
| #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ |
| #define FCP_PTA_ORDERED 2 /* ordered task attribute */ |
| #define FCP_PTA_ACA 4 /* auto. contingent allegiance */ |
| #define FCP_PTA_MASK 7 /* mask for task attribute field */ |
| #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ |
| #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ |
| |
| /* |
| * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which |
| * must be called under HW lock and could unlock/lock it inside. |
| * It isn't an issue, since in the current implementation on the time when |
| * those functions are called: |
| * |
| * - Either context is IRQ and only IRQ handler can modify HW data, |
| * including rings related fields, |
| * |
| * - Or access to target mode variables from struct qla_tgt doesn't |
| * cross those functions boundaries, except tgt_stop, which |
| * additionally protected by irq_cmd_count. |
| */ |
| /* Predefs for callbacks handed to qla2xxx LLD */ |
| static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, |
| struct atio_from_isp *pkt, uint8_t); |
| static void qlt_response_pkt(struct scsi_qla_host *ha, struct rsp_que *rsp, |
| response_t *pkt); |
| static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, |
| int fn, void *iocb, int flags); |
| static void qlt_send_term_exchange(struct qla_qpair *, struct qla_tgt_cmd |
| *cmd, struct atio_from_isp *atio, int ha_locked, int ul_abort); |
| static void qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, |
| struct atio_from_isp *atio, uint16_t status, int qfull); |
| static void qlt_disable_vha(struct scsi_qla_host *vha); |
| static void qlt_clear_tgt_db(struct qla_tgt *tgt); |
| static void qlt_send_notify_ack(struct qla_qpair *qpair, |
| struct imm_ntfy_from_isp *ntfy, |
| uint32_t add_flags, uint16_t resp_code, int resp_code_valid, |
| uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan); |
| static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, |
| struct imm_ntfy_from_isp *imm, int ha_locked); |
| static struct fc_port *qlt_create_sess(struct scsi_qla_host *vha, |
| fc_port_t *fcport, bool local); |
| void qlt_unreg_sess(struct fc_port *sess); |
| static void qlt_24xx_handle_abts(struct scsi_qla_host *, |
| struct abts_recv_from_24xx *); |
| static void qlt_send_busy(struct qla_qpair *, struct atio_from_isp *, |
| uint16_t); |
| static int qlt_check_reserve_free_req(struct qla_qpair *qpair, uint32_t); |
| static inline uint32_t qlt_make_handle(struct qla_qpair *); |
| |
| /* |
| * Global Variables |
| */ |
| static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; |
| struct kmem_cache *qla_tgt_plogi_cachep; |
| static mempool_t *qla_tgt_mgmt_cmd_mempool; |
| static struct workqueue_struct *qla_tgt_wq; |
| static DEFINE_MUTEX(qla_tgt_mutex); |
| static LIST_HEAD(qla_tgt_glist); |
| |
| static const char *prot_op_str(u32 prot_op) |
| { |
| switch (prot_op) { |
| case TARGET_PROT_NORMAL: return "NORMAL"; |
| case TARGET_PROT_DIN_INSERT: return "DIN_INSERT"; |
| case TARGET_PROT_DOUT_INSERT: return "DOUT_INSERT"; |
| case TARGET_PROT_DIN_STRIP: return "DIN_STRIP"; |
| case TARGET_PROT_DOUT_STRIP: return "DOUT_STRIP"; |
| case TARGET_PROT_DIN_PASS: return "DIN_PASS"; |
| case TARGET_PROT_DOUT_PASS: return "DOUT_PASS"; |
| default: return "UNKNOWN"; |
| } |
| } |
| |
| /* This API intentionally takes dest as a parameter, rather than returning |
| * int value to avoid caller forgetting to issue wmb() after the store */ |
| void qlt_do_generation_tick(struct scsi_qla_host *vha, int *dest) |
| { |
| scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev); |
| *dest = atomic_inc_return(&base_vha->generation_tick); |
| /* memory barrier */ |
| wmb(); |
| } |
| |
| /* Might release hw lock, then reaquire!! */ |
| static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) |
| { |
| /* Send marker if required */ |
| if (unlikely(vha->marker_needed != 0)) { |
| int rc = qla2x00_issue_marker(vha, vha_locked); |
| |
| if (rc != QLA_SUCCESS) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe03d, |
| "qla_target(%d): issue_marker() failed\n", |
| vha->vp_idx); |
| } |
| return rc; |
| } |
| return QLA_SUCCESS; |
| } |
| |
| struct scsi_qla_host *qla_find_host_by_d_id(struct scsi_qla_host *vha, |
| be_id_t d_id) |
| { |
| struct scsi_qla_host *host; |
| uint32_t key; |
| |
| if (vha->d_id.b.area == d_id.area && |
| vha->d_id.b.domain == d_id.domain && |
| vha->d_id.b.al_pa == d_id.al_pa) |
| return vha; |
| |
| key = be_to_port_id(d_id).b24; |
| |
| host = btree_lookup32(&vha->hw->host_map, key); |
| if (!host) |
| ql_dbg(ql_dbg_tgt_mgt + ql_dbg_verbose, vha, 0xf005, |
| "Unable to find host %06x\n", key); |
| |
| return host; |
| } |
| |
| static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); |
| |
| vha->hw->tgt.num_pend_cmds++; |
| if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) |
| vha->qla_stats.stat_max_pend_cmds = |
| vha->hw->tgt.num_pend_cmds; |
| spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); |
| } |
| static inline void qlt_decr_num_pend_cmds(struct scsi_qla_host *vha) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); |
| vha->hw->tgt.num_pend_cmds--; |
| spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); |
| } |
| |
| |
| static void qlt_queue_unknown_atio(scsi_qla_host_t *vha, |
| struct atio_from_isp *atio, uint8_t ha_locked) |
| { |
| struct qla_tgt_sess_op *u; |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| unsigned long flags; |
| |
| if (tgt->tgt_stop) { |
| ql_dbg(ql_dbg_async, vha, 0x502c, |
| "qla_target(%d): dropping unknown ATIO_TYPE7, because tgt is being stopped", |
| vha->vp_idx); |
| goto out_term; |
| } |
| |
| u = kzalloc(sizeof(*u), GFP_ATOMIC); |
| if (u == NULL) |
| goto out_term; |
| |
| u->vha = vha; |
| memcpy(&u->atio, atio, sizeof(*atio)); |
| INIT_LIST_HEAD(&u->cmd_list); |
| |
| spin_lock_irqsave(&vha->cmd_list_lock, flags); |
| list_add_tail(&u->cmd_list, &vha->unknown_atio_list); |
| spin_unlock_irqrestore(&vha->cmd_list_lock, flags); |
| |
| schedule_delayed_work(&vha->unknown_atio_work, 1); |
| |
| out: |
| return; |
| |
| out_term: |
| qlt_send_term_exchange(vha->hw->base_qpair, NULL, atio, ha_locked, 0); |
| goto out; |
| } |
| |
| static void qlt_try_to_dequeue_unknown_atios(struct scsi_qla_host *vha, |
| uint8_t ha_locked) |
| { |
| struct qla_tgt_sess_op *u, *t; |
| scsi_qla_host_t *host; |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| unsigned long flags; |
| uint8_t queued = 0; |
| |
| list_for_each_entry_safe(u, t, &vha->unknown_atio_list, cmd_list) { |
| if (u->aborted) { |
| ql_dbg(ql_dbg_async, vha, 0x502e, |
| "Freeing unknown %s %p, because of Abort\n", |
| "ATIO_TYPE7", u); |
| qlt_send_term_exchange(vha->hw->base_qpair, NULL, |
| &u->atio, ha_locked, 0); |
| goto abort; |
| } |
| |
| host = qla_find_host_by_d_id(vha, u->atio.u.isp24.fcp_hdr.d_id); |
| if (host != NULL) { |
| ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x502f, |
| "Requeuing unknown ATIO_TYPE7 %p\n", u); |
| qlt_24xx_atio_pkt(host, &u->atio, ha_locked); |
| } else if (tgt->tgt_stop) { |
| ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503a, |
| "Freeing unknown %s %p, because tgt is being stopped\n", |
| "ATIO_TYPE7", u); |
| qlt_send_term_exchange(vha->hw->base_qpair, NULL, |
| &u->atio, ha_locked, 0); |
| } else { |
| ql_dbg(ql_dbg_async + ql_dbg_verbose, vha, 0x503d, |
| "Reschedule u %p, vha %p, host %p\n", u, vha, host); |
| if (!queued) { |
| queued = 1; |
| schedule_delayed_work(&vha->unknown_atio_work, |
| 1); |
| } |
| continue; |
| } |
| |
| abort: |
| spin_lock_irqsave(&vha->cmd_list_lock, flags); |
| list_del(&u->cmd_list); |
| spin_unlock_irqrestore(&vha->cmd_list_lock, flags); |
| kfree(u); |
| } |
| } |
| |
| void qlt_unknown_atio_work_fn(struct work_struct *work) |
| { |
| struct scsi_qla_host *vha = container_of(to_delayed_work(work), |
| struct scsi_qla_host, unknown_atio_work); |
| |
| qlt_try_to_dequeue_unknown_atios(vha, 0); |
| } |
| |
| static bool qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, |
| struct atio_from_isp *atio, uint8_t ha_locked) |
| { |
| ql_dbg(ql_dbg_tgt, vha, 0xe072, |
| "%s: qla_target(%d): type %x ox_id %04x\n", |
| __func__, vha->vp_idx, atio->u.raw.entry_type, |
| be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); |
| |
| switch (atio->u.raw.entry_type) { |
| case ATIO_TYPE7: |
| { |
| struct scsi_qla_host *host = qla_find_host_by_d_id(vha, |
| atio->u.isp24.fcp_hdr.d_id); |
| if (unlikely(NULL == host)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe03e, |
| "qla_target(%d): Received ATIO_TYPE7 " |
| "with unknown d_id %x:%x:%x\n", vha->vp_idx, |
| atio->u.isp24.fcp_hdr.d_id.domain, |
| atio->u.isp24.fcp_hdr.d_id.area, |
| atio->u.isp24.fcp_hdr.d_id.al_pa); |
| |
| |
| qlt_queue_unknown_atio(vha, atio, ha_locked); |
| break; |
| } |
| if (unlikely(!list_empty(&vha->unknown_atio_list))) |
| qlt_try_to_dequeue_unknown_atios(vha, ha_locked); |
| |
| qlt_24xx_atio_pkt(host, atio, ha_locked); |
| break; |
| } |
| |
| case IMMED_NOTIFY_TYPE: |
| { |
| struct scsi_qla_host *host = vha; |
| struct imm_ntfy_from_isp *entry = |
| (struct imm_ntfy_from_isp *)atio; |
| |
| qlt_issue_marker(vha, ha_locked); |
| |
| if ((entry->u.isp24.vp_index != 0xFF) && |
| (entry->u.isp24.nport_handle != cpu_to_le16(0xFFFF))) { |
| host = qla_find_host_by_vp_idx(vha, |
| entry->u.isp24.vp_index); |
| if (unlikely(!host)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe03f, |
| "qla_target(%d): Received " |
| "ATIO (IMMED_NOTIFY_TYPE) " |
| "with unknown vp_index %d\n", |
| vha->vp_idx, entry->u.isp24.vp_index); |
| break; |
| } |
| } |
| qlt_24xx_atio_pkt(host, atio, ha_locked); |
| break; |
| } |
| |
| case VP_RPT_ID_IOCB_TYPE: |
| qla24xx_report_id_acquisition(vha, |
| (struct vp_rpt_id_entry_24xx *)atio); |
| break; |
| |
| case ABTS_RECV_24XX: |
| { |
| struct abts_recv_from_24xx *entry = |
| (struct abts_recv_from_24xx *)atio; |
| struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, |
| entry->vp_index); |
| unsigned long flags; |
| |
| if (unlikely(!host)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe00a, |
| "qla_target(%d): Response pkt (ABTS_RECV_24XX) " |
| "received, with unknown vp_index %d\n", |
| vha->vp_idx, entry->vp_index); |
| break; |
| } |
| if (!ha_locked) |
| spin_lock_irqsave(&host->hw->hardware_lock, flags); |
| qlt_24xx_handle_abts(host, (struct abts_recv_from_24xx *)atio); |
| if (!ha_locked) |
| spin_unlock_irqrestore(&host->hw->hardware_lock, flags); |
| break; |
| } |
| |
| /* case PUREX_IOCB_TYPE: ql2xmvasynctoatio */ |
| |
| default: |
| ql_dbg(ql_dbg_tgt, vha, 0xe040, |
| "qla_target(%d): Received unknown ATIO atio " |
| "type %x\n", vha->vp_idx, atio->u.raw.entry_type); |
| break; |
| } |
| |
| return false; |
| } |
| |
| void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, |
| struct rsp_que *rsp, response_t *pkt) |
| { |
| switch (pkt->entry_type) { |
| case CTIO_CRC2: |
| ql_dbg(ql_dbg_tgt, vha, 0xe073, |
| "qla_target(%d):%s: CRC2 Response pkt\n", |
| vha->vp_idx, __func__); |
| fallthrough; |
| case CTIO_TYPE7: |
| { |
| struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; |
| struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, |
| entry->vp_index); |
| if (unlikely(!host)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe041, |
| "qla_target(%d): Response pkt (CTIO_TYPE7) " |
| "received, with unknown vp_index %d\n", |
| vha->vp_idx, entry->vp_index); |
| break; |
| } |
| qlt_response_pkt(host, rsp, pkt); |
| break; |
| } |
| |
| case IMMED_NOTIFY_TYPE: |
| { |
| struct scsi_qla_host *host; |
| struct imm_ntfy_from_isp *entry = |
| (struct imm_ntfy_from_isp *)pkt; |
| |
| host = qla_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); |
| if (unlikely(!host)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe042, |
| "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " |
| "received, with unknown vp_index %d\n", |
| vha->vp_idx, entry->u.isp24.vp_index); |
| break; |
| } |
| qlt_response_pkt(host, rsp, pkt); |
| break; |
| } |
| |
| case NOTIFY_ACK_TYPE: |
| { |
| struct scsi_qla_host *host = vha; |
| struct nack_to_isp *entry = (struct nack_to_isp *)pkt; |
| |
| if (0xFF != entry->u.isp24.vp_index) { |
| host = qla_find_host_by_vp_idx(vha, |
| entry->u.isp24.vp_index); |
| if (unlikely(!host)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe043, |
| "qla_target(%d): Response " |
| "pkt (NOTIFY_ACK_TYPE) " |
| "received, with unknown " |
| "vp_index %d\n", vha->vp_idx, |
| entry->u.isp24.vp_index); |
| break; |
| } |
| } |
| qlt_response_pkt(host, rsp, pkt); |
| break; |
| } |
| |
| case ABTS_RECV_24XX: |
| { |
| struct abts_recv_from_24xx *entry = |
| (struct abts_recv_from_24xx *)pkt; |
| struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, |
| entry->vp_index); |
| if (unlikely(!host)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe044, |
| "qla_target(%d): Response pkt " |
| "(ABTS_RECV_24XX) received, with unknown " |
| "vp_index %d\n", vha->vp_idx, entry->vp_index); |
| break; |
| } |
| qlt_response_pkt(host, rsp, pkt); |
| break; |
| } |
| |
| case ABTS_RESP_24XX: |
| { |
| struct abts_resp_to_24xx *entry = |
| (struct abts_resp_to_24xx *)pkt; |
| struct scsi_qla_host *host = qla_find_host_by_vp_idx(vha, |
| entry->vp_index); |
| if (unlikely(!host)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe045, |
| "qla_target(%d): Response pkt " |
| "(ABTS_RECV_24XX) received, with unknown " |
| "vp_index %d\n", vha->vp_idx, entry->vp_index); |
| break; |
| } |
| qlt_response_pkt(host, rsp, pkt); |
| break; |
| } |
| default: |
| qlt_response_pkt(vha, rsp, pkt); |
| break; |
| } |
| |
| } |
| |
| /* |
| * All qlt_plogi_ack_t operations are protected by hardware_lock |
| */ |
| static int qla24xx_post_nack_work(struct scsi_qla_host *vha, fc_port_t *fcport, |
| struct imm_ntfy_from_isp *ntfy, int type) |
| { |
| struct qla_work_evt *e; |
| |
| e = qla2x00_alloc_work(vha, QLA_EVT_NACK); |
| if (!e) |
| return QLA_FUNCTION_FAILED; |
| |
| e->u.nack.fcport = fcport; |
| e->u.nack.type = type; |
| memcpy(e->u.nack.iocb, ntfy, sizeof(struct imm_ntfy_from_isp)); |
| return qla2x00_post_work(vha, e); |
| } |
| |
| static void qla2x00_async_nack_sp_done(srb_t *sp, int res) |
| { |
| struct scsi_qla_host *vha = sp->vha; |
| unsigned long flags; |
| |
| ql_dbg(ql_dbg_disc, vha, 0x20f2, |
| "Async done-%s res %x %8phC type %d\n", |
| sp->name, res, sp->fcport->port_name, sp->type); |
| |
| spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); |
| sp->fcport->flags &= ~FCF_ASYNC_SENT; |
| sp->fcport->chip_reset = vha->hw->base_qpair->chip_reset; |
| |
| switch (sp->type) { |
| case SRB_NACK_PLOGI: |
| sp->fcport->login_gen++; |
| sp->fcport->fw_login_state = DSC_LS_PLOGI_COMP; |
| sp->fcport->logout_on_delete = 1; |
| sp->fcport->plogi_nack_done_deadline = jiffies + HZ; |
| sp->fcport->send_els_logo = 0; |
| |
| if (sp->fcport->flags & FCF_FCSP_DEVICE) { |
| ql_dbg(ql_dbg_edif, vha, 0x20ef, |
| "%s %8phC edif: PLOGI- AUTH WAIT\n", __func__, |
| sp->fcport->port_name); |
| qla2x00_set_fcport_disc_state(sp->fcport, |
| DSC_LOGIN_AUTH_PEND); |
| qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, |
| sp->fcport->d_id.b24); |
| qla_edb_eventcreate(vha, VND_CMD_AUTH_STATE_NEEDED, sp->fcport->d_id.b24, |
| 0, sp->fcport); |
| } |
| break; |
| |
| case SRB_NACK_PRLI: |
| sp->fcport->fw_login_state = DSC_LS_PRLI_COMP; |
| sp->fcport->deleted = 0; |
| sp->fcport->send_els_logo = 0; |
| |
| if (!sp->fcport->login_succ && |
| !IS_SW_RESV_ADDR(sp->fcport->d_id)) { |
| sp->fcport->login_succ = 1; |
| |
| vha->fcport_count++; |
| spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); |
| qla24xx_sched_upd_fcport(sp->fcport); |
| spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); |
| } else { |
| sp->fcport->login_retry = 0; |
| qla2x00_set_fcport_disc_state(sp->fcport, |
| DSC_LOGIN_COMPLETE); |
| sp->fcport->deleted = 0; |
| sp->fcport->logout_on_delete = 1; |
| } |
| break; |
| |
| case SRB_NACK_LOGO: |
| sp->fcport->login_gen++; |
| sp->fcport->fw_login_state = DSC_LS_PORT_UNAVAIL; |
| qlt_logo_completion_handler(sp->fcport, MBS_COMMAND_COMPLETE); |
| break; |
| } |
| spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); |
| |
| kref_put(&sp->cmd_kref, qla2x00_sp_release); |
| } |
| |
| int qla24xx_async_notify_ack(scsi_qla_host_t *vha, fc_port_t *fcport, |
| struct imm_ntfy_from_isp *ntfy, int type) |
| { |
| int rval = QLA_FUNCTION_FAILED; |
| srb_t *sp; |
| char *c = NULL; |
| |
| fcport->flags |= FCF_ASYNC_SENT; |
| switch (type) { |
| case SRB_NACK_PLOGI: |
| fcport->fw_login_state = DSC_LS_PLOGI_PEND; |
| c = "PLOGI"; |
| if (vha->hw->flags.edif_enabled && |
| (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) |
| fcport->flags |= FCF_FCSP_DEVICE; |
| break; |
| case SRB_NACK_PRLI: |
| fcport->fw_login_state = DSC_LS_PRLI_PEND; |
| fcport->deleted = 0; |
| c = "PRLI"; |
| break; |
| case SRB_NACK_LOGO: |
| fcport->fw_login_state = DSC_LS_LOGO_PEND; |
| c = "LOGO"; |
| break; |
| } |
| |
| sp = qla2x00_get_sp(vha, fcport, GFP_ATOMIC); |
| if (!sp) |
| goto done; |
| |
| sp->type = type; |
| sp->name = "nack"; |
| qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha) + 2, |
| qla2x00_async_nack_sp_done); |
| |
| sp->u.iocb_cmd.u.nack.ntfy = ntfy; |
| |
| ql_dbg(ql_dbg_disc, vha, 0x20f4, |
| "Async-%s %8phC hndl %x %s\n", |
| sp->name, fcport->port_name, sp->handle, c); |
| |
| rval = qla2x00_start_sp(sp); |
| if (rval != QLA_SUCCESS) |
| goto done_free_sp; |
| |
| return rval; |
| |
| done_free_sp: |
| kref_put(&sp->cmd_kref, qla2x00_sp_release); |
| done: |
| fcport->flags &= ~FCF_ASYNC_SENT; |
| return rval; |
| } |
| |
| void qla24xx_do_nack_work(struct scsi_qla_host *vha, struct qla_work_evt *e) |
| { |
| fc_port_t *t; |
| |
| switch (e->u.nack.type) { |
| case SRB_NACK_PRLI: |
| t = e->u.nack.fcport; |
| flush_work(&t->del_work); |
| flush_work(&t->free_work); |
| mutex_lock(&vha->vha_tgt.tgt_mutex); |
| t = qlt_create_sess(vha, e->u.nack.fcport, 0); |
| mutex_unlock(&vha->vha_tgt.tgt_mutex); |
| if (t) { |
| ql_log(ql_log_info, vha, 0xd034, |
| "%s create sess success %p", __func__, t); |
| /* create sess has an extra kref */ |
| vha->hw->tgt.tgt_ops->put_sess(e->u.nack.fcport); |
| } |
| break; |
| } |
| qla24xx_async_notify_ack(vha, e->u.nack.fcport, |
| (struct imm_ntfy_from_isp *)e->u.nack.iocb, e->u.nack.type); |
| } |
| |
| void qla24xx_delete_sess_fn(struct work_struct *work) |
| { |
| fc_port_t *fcport = container_of(work, struct fc_port, del_work); |
| struct qla_hw_data *ha = NULL; |
| |
| if (!fcport || !fcport->vha || !fcport->vha->hw) |
| return; |
| |
| ha = fcport->vha->hw; |
| |
| if (fcport->se_sess) { |
| ha->tgt.tgt_ops->shutdown_sess(fcport); |
| ha->tgt.tgt_ops->put_sess(fcport); |
| } else { |
| qlt_unreg_sess(fcport); |
| } |
| } |
| |
| /* |
| * Called from qla2x00_reg_remote_port() |
| */ |
| void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| struct fc_port *sess = fcport; |
| unsigned long flags; |
| |
| if (!vha->hw->tgt.tgt_ops) |
| return; |
| |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags); |
| if (tgt->tgt_stop) { |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| return; |
| } |
| |
| if (fcport->disc_state == DSC_DELETE_PEND) { |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| return; |
| } |
| |
| if (!sess->se_sess) { |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| |
| mutex_lock(&vha->vha_tgt.tgt_mutex); |
| sess = qlt_create_sess(vha, fcport, false); |
| mutex_unlock(&vha->vha_tgt.tgt_mutex); |
| |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags); |
| } else { |
| if (fcport->fw_login_state == DSC_LS_PRLI_COMP) { |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| return; |
| } |
| |
| if (!kref_get_unless_zero(&sess->sess_kref)) { |
| ql_dbg(ql_dbg_disc, vha, 0x2107, |
| "%s: kref_get fail sess %8phC \n", |
| __func__, sess->port_name); |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| return; |
| } |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, |
| "qla_target(%u): %ssession for port %8phC " |
| "(loop ID %d) reappeared\n", vha->vp_idx, |
| sess->local ? "local " : "", sess->port_name, sess->loop_id); |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, |
| "Reappeared sess %p\n", sess); |
| |
| ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, |
| fcport->loop_id, |
| (fcport->flags & FCF_CONF_COMP_SUPPORTED)); |
| } |
| |
| if (sess && sess->local) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, |
| "qla_target(%u): local session for " |
| "port %8phC (loop ID %d) became global\n", vha->vp_idx, |
| fcport->port_name, sess->loop_id); |
| sess->local = 0; |
| } |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| |
| ha->tgt.tgt_ops->put_sess(sess); |
| } |
| |
| /* |
| * This is a zero-base ref-counting solution, since hardware_lock |
| * guarantees that ref_count is not modified concurrently. |
| * Upon successful return content of iocb is undefined |
| */ |
| static struct qlt_plogi_ack_t * |
| qlt_plogi_ack_find_add(struct scsi_qla_host *vha, port_id_t *id, |
| struct imm_ntfy_from_isp *iocb) |
| { |
| struct qlt_plogi_ack_t *pla; |
| |
| lockdep_assert_held(&vha->hw->hardware_lock); |
| |
| list_for_each_entry(pla, &vha->plogi_ack_list, list) { |
| if (pla->id.b24 == id->b24) { |
| ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x210d, |
| "%s %d %8phC Term INOT due to new INOT", |
| __func__, __LINE__, |
| pla->iocb.u.isp24.port_name); |
| qlt_send_term_imm_notif(vha, &pla->iocb, 1); |
| memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); |
| return pla; |
| } |
| } |
| |
| pla = kmem_cache_zalloc(qla_tgt_plogi_cachep, GFP_ATOMIC); |
| if (!pla) { |
| ql_dbg(ql_dbg_async, vha, 0x5088, |
| "qla_target(%d): Allocation of plogi_ack failed\n", |
| vha->vp_idx); |
| return NULL; |
| } |
| |
| memcpy(&pla->iocb, iocb, sizeof(pla->iocb)); |
| pla->id = *id; |
| list_add_tail(&pla->list, &vha->plogi_ack_list); |
| |
| return pla; |
| } |
| |
| void qlt_plogi_ack_unref(struct scsi_qla_host *vha, |
| struct qlt_plogi_ack_t *pla) |
| { |
| struct imm_ntfy_from_isp *iocb = &pla->iocb; |
| port_id_t port_id; |
| uint16_t loop_id; |
| fc_port_t *fcport = pla->fcport; |
| |
| BUG_ON(!pla->ref_count); |
| pla->ref_count--; |
| |
| if (pla->ref_count) |
| return; |
| |
| ql_dbg(ql_dbg_disc, vha, 0x5089, |
| "Sending PLOGI ACK to wwn %8phC s_id %02x:%02x:%02x loop_id %#04x" |
| " exch %#x ox_id %#x\n", iocb->u.isp24.port_name, |
| iocb->u.isp24.port_id[2], iocb->u.isp24.port_id[1], |
| iocb->u.isp24.port_id[0], |
| le16_to_cpu(iocb->u.isp24.nport_handle), |
| iocb->u.isp24.exchange_address, iocb->ox_id); |
| |
| port_id.b.domain = iocb->u.isp24.port_id[2]; |
| port_id.b.area = iocb->u.isp24.port_id[1]; |
| port_id.b.al_pa = iocb->u.isp24.port_id[0]; |
| port_id.b.rsvd_1 = 0; |
| |
| loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); |
| |
| fcport->loop_id = loop_id; |
| fcport->d_id = port_id; |
| if (iocb->u.isp24.status_subcode == ELS_PLOGI) |
| qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PLOGI); |
| else |
| qla24xx_post_nack_work(vha, fcport, iocb, SRB_NACK_PRLI); |
| |
| list_for_each_entry(fcport, &vha->vp_fcports, list) { |
| if (fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] == pla) |
| fcport->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; |
| if (fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] == pla) |
| fcport->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; |
| } |
| |
| list_del(&pla->list); |
| kmem_cache_free(qla_tgt_plogi_cachep, pla); |
| } |
| |
| void |
| qlt_plogi_ack_link(struct scsi_qla_host *vha, struct qlt_plogi_ack_t *pla, |
| struct fc_port *sess, enum qlt_plogi_link_t link) |
| { |
| struct imm_ntfy_from_isp *iocb = &pla->iocb; |
| /* Inc ref_count first because link might already be pointing at pla */ |
| pla->ref_count++; |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf097, |
| "Linking sess %p [%d] wwn %8phC with PLOGI ACK to wwn %8phC" |
| " s_id %02x:%02x:%02x, ref=%d pla %p link %d\n", |
| sess, link, sess->port_name, |
| iocb->u.isp24.port_name, iocb->u.isp24.port_id[2], |
| iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], |
| pla->ref_count, pla, link); |
| |
| if (link == QLT_PLOGI_LINK_CONFLICT) { |
| switch (sess->disc_state) { |
| case DSC_DELETED: |
| case DSC_DELETE_PEND: |
| pla->ref_count--; |
| return; |
| default: |
| break; |
| } |
| } |
| |
| if (sess->plogi_link[link]) |
| qlt_plogi_ack_unref(vha, sess->plogi_link[link]); |
| |
| if (link == QLT_PLOGI_LINK_SAME_WWN) |
| pla->fcport = sess; |
| |
| sess->plogi_link[link] = pla; |
| } |
| |
| typedef struct { |
| /* These fields must be initialized by the caller */ |
| port_id_t id; |
| /* |
| * number of cmds dropped while we were waiting for |
| * initiator to ack LOGO initialize to 1 if LOGO is |
| * triggered by a command, otherwise, to 0 |
| */ |
| int cmd_count; |
| |
| /* These fields are used by callee */ |
| struct list_head list; |
| } qlt_port_logo_t; |
| |
| static void |
| qlt_send_first_logo(struct scsi_qla_host *vha, qlt_port_logo_t *logo) |
| { |
| qlt_port_logo_t *tmp; |
| int res; |
| |
| if (test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags)) { |
| res = 0; |
| goto out; |
| } |
| |
| mutex_lock(&vha->vha_tgt.tgt_mutex); |
| |
| list_for_each_entry(tmp, &vha->logo_list, list) { |
| if (tmp->id.b24 == logo->id.b24) { |
| tmp->cmd_count += logo->cmd_count; |
| mutex_unlock(&vha->vha_tgt.tgt_mutex); |
| return; |
| } |
| } |
| |
| list_add_tail(&logo->list, &vha->logo_list); |
| |
| mutex_unlock(&vha->vha_tgt.tgt_mutex); |
| |
| res = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, logo->id); |
| |
| mutex_lock(&vha->vha_tgt.tgt_mutex); |
| list_del(&logo->list); |
| mutex_unlock(&vha->vha_tgt.tgt_mutex); |
| |
| out: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf098, |
| "Finished LOGO to %02x:%02x:%02x, dropped %d cmds, res = %#x\n", |
| logo->id.b.domain, logo->id.b.area, logo->id.b.al_pa, |
| logo->cmd_count, res); |
| } |
| |
| void qlt_free_session_done(struct work_struct *work) |
| { |
| struct fc_port *sess = container_of(work, struct fc_port, |
| free_work); |
| struct qla_tgt *tgt = sess->tgt; |
| struct scsi_qla_host *vha = sess->vha; |
| struct qla_hw_data *ha = vha->hw; |
| unsigned long flags; |
| bool logout_started = false; |
| scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); |
| struct qlt_plogi_ack_t *own = |
| sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; |
| |
| ql_dbg(ql_dbg_disc, vha, 0xf084, |
| "%s: se_sess %p / sess %p from port %8phC loop_id %#04x" |
| " s_id %02x:%02x:%02x logout %d keep %d els_logo %d\n", |
| __func__, sess->se_sess, sess, sess->port_name, sess->loop_id, |
| sess->d_id.b.domain, sess->d_id.b.area, sess->d_id.b.al_pa, |
| sess->logout_on_delete, sess->keep_nport_handle, |
| sess->send_els_logo); |
| |
| if (!IS_SW_RESV_ADDR(sess->d_id)) { |
| qla2x00_mark_device_lost(vha, sess, 0); |
| |
| if (sess->send_els_logo) { |
| qlt_port_logo_t logo; |
| |
| logo.id = sess->d_id; |
| logo.cmd_count = 0; |
| INIT_LIST_HEAD(&logo.list); |
| if (!own) |
| qlt_send_first_logo(vha, &logo); |
| sess->send_els_logo = 0; |
| } |
| |
| if (sess->logout_on_delete && sess->loop_id != FC_NO_LOOP_ID) { |
| int rc; |
| |
| if (!own || |
| (own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { |
| sess->logout_completed = 0; |
| rc = qla2x00_post_async_logout_work(vha, sess, |
| NULL); |
| if (rc != QLA_SUCCESS) |
| ql_log(ql_log_warn, vha, 0xf085, |
| "Schedule logo failed sess %p rc %d\n", |
| sess, rc); |
| else |
| logout_started = true; |
| } else if (own && (own->iocb.u.isp24.status_subcode == |
| ELS_PRLI) && ha->flags.rida_fmt2) { |
| rc = qla2x00_post_async_prlo_work(vha, sess, |
| NULL); |
| if (rc != QLA_SUCCESS) |
| ql_log(ql_log_warn, vha, 0xf085, |
| "Schedule PRLO failed sess %p rc %d\n", |
| sess, rc); |
| else |
| logout_started = true; |
| } |
| } /* if sess->logout_on_delete */ |
| |
| if (sess->nvme_flag & NVME_FLAG_REGISTERED && |
| !(sess->nvme_flag & NVME_FLAG_DELETING)) { |
| sess->nvme_flag |= NVME_FLAG_DELETING; |
| qla_nvme_unregister_remote_port(sess); |
| } |
| |
| if (ha->flags.edif_enabled && |
| (!own || own->iocb.u.isp24.status_subcode == ELS_PLOGI)) { |
| sess->edif.authok = 0; |
| if (!ha->flags.host_shutting_down) { |
| ql_dbg(ql_dbg_edif, vha, 0x911e, |
| "%s wwpn %8phC calling qla2x00_release_all_sadb\n", |
| __func__, sess->port_name); |
| qla2x00_release_all_sadb(vha, sess); |
| } else { |
| ql_dbg(ql_dbg_edif, vha, 0x911e, |
| "%s bypassing release_all_sadb\n", |
| __func__); |
| } |
| |
| qla_edif_clear_appdata(vha, sess); |
| qla_edif_sess_down(vha, sess); |
| } |
| } |
| |
| /* |
| * Release the target session for FC Nexus from fabric module code. |
| */ |
| if (sess->se_sess != NULL) |
| ha->tgt.tgt_ops->free_session(sess); |
| |
| if (logout_started) { |
| bool traced = false; |
| u16 cnt = 0; |
| |
| while (!READ_ONCE(sess->logout_completed)) { |
| if (!traced) { |
| ql_dbg(ql_dbg_disc, vha, 0xf086, |
| "%s: waiting for sess %p logout\n", |
| __func__, sess); |
| traced = true; |
| } |
| msleep(100); |
| cnt++; |
| /* |
| * Driver timeout is set to 22 Sec, update count value to loop |
| * long enough for log-out to complete before advancing. Otherwise, |
| * straddling logout can interfere with re-login attempt. |
| */ |
| if (cnt > 230) |
| break; |
| } |
| |
| ql_dbg(ql_dbg_disc, vha, 0xf087, |
| "%s: sess %p logout completed\n", __func__, sess); |
| } |
| |
| if (sess->logo_ack_needed) { |
| sess->logo_ack_needed = 0; |
| qla24xx_async_notify_ack(vha, sess, |
| (struct imm_ntfy_from_isp *)sess->iocb, SRB_NACK_LOGO); |
| } |
| |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags); |
| if (sess->se_sess) { |
| sess->se_sess = NULL; |
| if (tgt && !IS_SW_RESV_ADDR(sess->d_id)) |
| tgt->sess_count--; |
| } |
| |
| qla2x00_set_fcport_disc_state(sess, DSC_DELETED); |
| sess->fw_login_state = DSC_LS_PORT_UNAVAIL; |
| |
| if (sess->login_succ && !IS_SW_RESV_ADDR(sess->d_id)) { |
| vha->fcport_count--; |
| sess->login_succ = 0; |
| } |
| |
| qla2x00_clear_loop_id(sess); |
| |
| if (sess->conflict) { |
| sess->conflict->login_pause = 0; |
| sess->conflict = NULL; |
| if (!test_bit(UNLOADING, &vha->dpc_flags)) |
| set_bit(RELOGIN_NEEDED, &vha->dpc_flags); |
| } |
| |
| { |
| struct qlt_plogi_ack_t *con = |
| sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]; |
| struct imm_ntfy_from_isp *iocb; |
| |
| own = sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]; |
| |
| if (con) { |
| iocb = &con->iocb; |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf099, |
| "se_sess %p / sess %p port %8phC is gone," |
| " %s (ref=%d), releasing PLOGI for %8phC (ref=%d)\n", |
| sess->se_sess, sess, sess->port_name, |
| own ? "releasing own PLOGI" : "no own PLOGI pending", |
| own ? own->ref_count : -1, |
| iocb->u.isp24.port_name, con->ref_count); |
| qlt_plogi_ack_unref(vha, con); |
| sess->plogi_link[QLT_PLOGI_LINK_CONFLICT] = NULL; |
| } else { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09a, |
| "se_sess %p / sess %p port %8phC is gone, %s (ref=%d)\n", |
| sess->se_sess, sess, sess->port_name, |
| own ? "releasing own PLOGI" : |
| "no own PLOGI pending", |
| own ? own->ref_count : -1); |
| } |
| |
| if (own) { |
| sess->fw_login_state = DSC_LS_PLOGI_PEND; |
| qlt_plogi_ack_unref(vha, own); |
| sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] = NULL; |
| } |
| } |
| |
| sess->explicit_logout = 0; |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| |
| qla2x00_dfs_remove_rport(vha, sess); |
| |
| spin_lock_irqsave(&vha->work_lock, flags); |
| sess->flags &= ~FCF_ASYNC_SENT; |
| sess->deleted = QLA_SESS_DELETED; |
| sess->free_pending = 0; |
| spin_unlock_irqrestore(&vha->work_lock, flags); |
| |
| ql_dbg(ql_dbg_disc, vha, 0xf001, |
| "Unregistration of sess %p %8phC finished fcp_cnt %d\n", |
| sess, sess->port_name, vha->fcport_count); |
| |
| if (tgt && (tgt->sess_count == 0)) |
| wake_up_all(&tgt->waitQ); |
| |
| if (!test_bit(PFLG_DRIVER_REMOVING, &base_vha->pci_flags) && |
| !(vha->vp_idx && test_bit(VPORT_DELETE, &vha->dpc_flags)) && |
| (!tgt || !tgt->tgt_stop) && !LOOP_TRANSITION(vha)) { |
| switch (vha->host->active_mode) { |
| case MODE_INITIATOR: |
| case MODE_DUAL: |
| set_bit(RELOGIN_NEEDED, &vha->dpc_flags); |
| qla2xxx_wake_dpc(vha); |
| break; |
| case MODE_TARGET: |
| default: |
| /* no-op */ |
| break; |
| } |
| } |
| |
| if (vha->fcport_count == 0) |
| wake_up_all(&vha->fcport_waitQ); |
| } |
| |
| /* ha->tgt.sess_lock supposed to be held on entry */ |
| void qlt_unreg_sess(struct fc_port *sess) |
| { |
| struct scsi_qla_host *vha = sess->vha; |
| unsigned long flags; |
| |
| ql_dbg(ql_dbg_disc, sess->vha, 0x210a, |
| "%s sess %p for deletion %8phC\n", |
| __func__, sess, sess->port_name); |
| |
| spin_lock_irqsave(&sess->vha->work_lock, flags); |
| if (sess->free_pending) { |
| spin_unlock_irqrestore(&sess->vha->work_lock, flags); |
| return; |
| } |
| sess->free_pending = 1; |
| /* |
| * Use FCF_ASYNC_SENT flag to block other cmds used in sess |
| * management from being sent. |
| */ |
| sess->flags |= FCF_ASYNC_SENT; |
| sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; |
| spin_unlock_irqrestore(&sess->vha->work_lock, flags); |
| |
| if (sess->se_sess) |
| vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); |
| |
| qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); |
| sess->last_rscn_gen = sess->rscn_gen; |
| sess->last_login_gen = sess->login_gen; |
| |
| queue_work(sess->vha->hw->wq, &sess->free_work); |
| } |
| EXPORT_SYMBOL(qlt_unreg_sess); |
| |
| static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct fc_port *sess = NULL; |
| uint16_t loop_id; |
| int res = 0; |
| struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; |
| unsigned long flags; |
| |
| loop_id = le16_to_cpu(n->u.isp24.nport_handle); |
| if (loop_id == 0xFFFF) { |
| /* Global event */ |
| atomic_inc(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags); |
| qlt_clear_tgt_db(vha->vha_tgt.qla_tgt); |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| } else { |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags); |
| sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| } |
| |
| ql_dbg(ql_dbg_tgt, vha, 0xe000, |
| "Using sess for qla_tgt_reset: %p\n", sess); |
| if (!sess) { |
| res = -ESRCH; |
| return res; |
| } |
| |
| ql_dbg(ql_dbg_tgt, vha, 0xe047, |
| "scsi(%ld): resetting (session %p from port %8phC mcmd %x, " |
| "loop_id %d)\n", vha->host_no, sess, sess->port_name, |
| mcmd, loop_id); |
| |
| return qlt_issue_task_mgmt(sess, 0, mcmd, iocb, QLA24XX_MGMT_SEND_NACK); |
| } |
| |
| static void qla24xx_chk_fcp_state(struct fc_port *sess) |
| { |
| if (sess->chip_reset != sess->vha->hw->base_qpair->chip_reset) { |
| sess->logout_on_delete = 0; |
| sess->logo_ack_needed = 0; |
| sess->fw_login_state = DSC_LS_PORT_UNAVAIL; |
| } |
| } |
| |
| void qlt_schedule_sess_for_deletion(struct fc_port *sess) |
| { |
| struct qla_tgt *tgt = sess->tgt; |
| unsigned long flags; |
| u16 sec; |
| |
| switch (sess->disc_state) { |
| case DSC_DELETE_PEND: |
| return; |
| case DSC_DELETED: |
| if (!sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN] && |
| !sess->plogi_link[QLT_PLOGI_LINK_CONFLICT]) { |
| if (tgt && tgt->tgt_stop && tgt->sess_count == 0) |
| wake_up_all(&tgt->waitQ); |
| |
| if (sess->vha->fcport_count == 0) |
| wake_up_all(&sess->vha->fcport_waitQ); |
| return; |
| } |
| break; |
| case DSC_UPD_FCPORT: |
| /* |
| * This port is not done reporting to upper layer. |
| * let it finish |
| */ |
| sess->next_disc_state = DSC_DELETE_PEND; |
| sec = jiffies_to_msecs(jiffies - |
| sess->jiffies_at_registration)/1000; |
| if (sess->sec_since_registration < sec && sec && !(sec % 5)) { |
| sess->sec_since_registration = sec; |
| ql_dbg(ql_dbg_disc, sess->vha, 0xffff, |
| "%s %8phC : Slow Rport registration(%d Sec)\n", |
| __func__, sess->port_name, sec); |
| } |
| return; |
| default: |
| break; |
| } |
| |
| spin_lock_irqsave(&sess->vha->work_lock, flags); |
| if (sess->deleted == QLA_SESS_DELETION_IN_PROGRESS) { |
| spin_unlock_irqrestore(&sess->vha->work_lock, flags); |
| return; |
| } |
| sess->deleted = QLA_SESS_DELETION_IN_PROGRESS; |
| spin_unlock_irqrestore(&sess->vha->work_lock, flags); |
| |
| sess->prli_pend_timer = 0; |
| qla2x00_set_fcport_disc_state(sess, DSC_DELETE_PEND); |
| |
| qla24xx_chk_fcp_state(sess); |
| |
| ql_dbg(ql_log_warn, sess->vha, 0xe001, |
| "Scheduling sess %p for deletion %8phC fc4_type %x\n", |
| sess, sess->port_name, sess->fc4_type); |
| |
| WARN_ON(!queue_work(sess->vha->hw->wq, &sess->del_work)); |
| } |
| |
| static void qlt_clear_tgt_db(struct qla_tgt *tgt) |
| { |
| struct fc_port *sess; |
| scsi_qla_host_t *vha = tgt->vha; |
| |
| list_for_each_entry(sess, &vha->vp_fcports, list) { |
| if (sess->se_sess) |
| qlt_schedule_sess_for_deletion(sess); |
| } |
| |
| /* At this point tgt could be already dead */ |
| } |
| |
| static int qla24xx_get_loop_id(struct scsi_qla_host *vha, be_id_t s_id, |
| uint16_t *loop_id) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| dma_addr_t gid_list_dma; |
| struct gid_list_info *gid_list, *gid; |
| int res, rc, i; |
| uint16_t entries; |
| |
| gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), |
| &gid_list_dma, GFP_KERNEL); |
| if (!gid_list) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, |
| "qla_target(%d): DMA Alloc failed of %u\n", |
| vha->vp_idx, qla2x00_gid_list_size(ha)); |
| return -ENOMEM; |
| } |
| |
| /* Get list of logged in devices */ |
| rc = qla24xx_gidlist_wait(vha, gid_list, gid_list_dma, &entries); |
| if (rc != QLA_SUCCESS) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, |
| "qla_target(%d): get_id_list() failed: %x\n", |
| vha->vp_idx, rc); |
| res = -EBUSY; |
| goto out_free_id_list; |
| } |
| |
| gid = gid_list; |
| res = -ENOENT; |
| for (i = 0; i < entries; i++) { |
| if (gid->al_pa == s_id.al_pa && |
| gid->area == s_id.area && |
| gid->domain == s_id.domain) { |
| *loop_id = le16_to_cpu(gid->loop_id); |
| res = 0; |
| break; |
| } |
| gid = (void *)gid + ha->gid_list_info_size; |
| } |
| |
| out_free_id_list: |
| dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), |
| gid_list, gid_list_dma); |
| return res; |
| } |
| |
| /* |
| * Adds an extra ref to allow to drop hw lock after adding sess to the list. |
| * Caller must put it. |
| */ |
| static struct fc_port *qlt_create_sess( |
| struct scsi_qla_host *vha, |
| fc_port_t *fcport, |
| bool local) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct fc_port *sess = fcport; |
| unsigned long flags; |
| |
| if (vha->vha_tgt.qla_tgt->tgt_stop) |
| return NULL; |
| |
| if (fcport->se_sess) { |
| if (!kref_get_unless_zero(&sess->sess_kref)) { |
| ql_dbg(ql_dbg_disc, vha, 0x20f6, |
| "%s: kref_get_unless_zero failed for %8phC\n", |
| __func__, sess->port_name); |
| return NULL; |
| } |
| return fcport; |
| } |
| sess->tgt = vha->vha_tgt.qla_tgt; |
| sess->local = local; |
| |
| /* |
| * Under normal circumstances we want to logout from firmware when |
| * session eventually ends and release corresponding nport handle. |
| * In the exception cases (e.g. when new PLOGI is waiting) corresponding |
| * code will adjust these flags as necessary. |
| */ |
| sess->logout_on_delete = 1; |
| sess->keep_nport_handle = 0; |
| sess->logout_completed = 0; |
| |
| if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, |
| &fcport->port_name[0], sess) < 0) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf015, |
| "(%d) %8phC check_initiator_node_acl failed\n", |
| vha->vp_idx, fcport->port_name); |
| return NULL; |
| } else { |
| kref_init(&fcport->sess_kref); |
| /* |
| * Take an extra reference to ->sess_kref here to handle |
| * fc_port access across ->tgt.sess_lock reaquire. |
| */ |
| if (!kref_get_unless_zero(&sess->sess_kref)) { |
| ql_dbg(ql_dbg_disc, vha, 0x20f7, |
| "%s: kref_get_unless_zero failed for %8phC\n", |
| __func__, sess->port_name); |
| return NULL; |
| } |
| |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags); |
| if (!IS_SW_RESV_ADDR(sess->d_id)) |
| vha->vha_tgt.qla_tgt->sess_count++; |
| |
| qlt_do_generation_tick(vha, &sess->generation); |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| } |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, |
| "Adding sess %p se_sess %p to tgt %p sess_count %d\n", |
| sess, sess->se_sess, vha->vha_tgt.qla_tgt, |
| vha->vha_tgt.qla_tgt->sess_count); |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, |
| "qla_target(%d): %ssession for wwn %8phC (loop_id %d, " |
| "s_id %x:%x:%x, confirmed completion %ssupported) added\n", |
| vha->vp_idx, local ? "local " : "", fcport->port_name, |
| fcport->loop_id, sess->d_id.b.domain, sess->d_id.b.area, |
| sess->d_id.b.al_pa, sess->conf_compl_supported ? "" : "not "); |
| |
| return sess; |
| } |
| |
| /* |
| * max_gen - specifies maximum session generation |
| * at which this deletion requestion is still valid |
| */ |
| void |
| qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport, int max_gen) |
| { |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| struct fc_port *sess = fcport; |
| unsigned long flags; |
| |
| if (!vha->hw->tgt.tgt_ops) |
| return; |
| |
| if (!tgt) |
| return; |
| |
| spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); |
| if (tgt->tgt_stop) { |
| spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); |
| return; |
| } |
| if (!sess->se_sess) { |
| spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); |
| return; |
| } |
| |
| if (max_gen - sess->generation < 0) { |
| spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf092, |
| "Ignoring stale deletion request for se_sess %p / sess %p" |
| " for port %8phC, req_gen %d, sess_gen %d\n", |
| sess->se_sess, sess, sess->port_name, max_gen, |
| sess->generation); |
| return; |
| } |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); |
| |
| sess->local = 1; |
| spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); |
| qlt_schedule_sess_for_deletion(sess); |
| } |
| |
| static inline int test_tgt_sess_count(struct qla_tgt *tgt) |
| { |
| struct qla_hw_data *ha = tgt->ha; |
| unsigned long flags; |
| int res; |
| /* |
| * We need to protect against race, when tgt is freed before or |
| * inside wake_up() |
| */ |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags); |
| ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, |
| "tgt %p, sess_count=%d\n", |
| tgt, tgt->sess_count); |
| res = (tgt->sess_count == 0); |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| |
| return res; |
| } |
| |
| /* Called by tcm_qla2xxx configfs code */ |
| int qlt_stop_phase1(struct qla_tgt *tgt) |
| { |
| struct scsi_qla_host *vha = tgt->vha; |
| struct qla_hw_data *ha = tgt->ha; |
| unsigned long flags; |
| |
| mutex_lock(&ha->optrom_mutex); |
| mutex_lock(&qla_tgt_mutex); |
| |
| if (tgt->tgt_stop || tgt->tgt_stopped) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, |
| "Already in tgt->tgt_stop or tgt_stopped state\n"); |
| mutex_unlock(&qla_tgt_mutex); |
| mutex_unlock(&ha->optrom_mutex); |
| return -EPERM; |
| } |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", |
| vha->host_no, vha); |
| /* |
| * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. |
| * Lock is needed, because we still can get an incoming packet. |
| */ |
| mutex_lock(&vha->vha_tgt.tgt_mutex); |
| tgt->tgt_stop = 1; |
| qlt_clear_tgt_db(tgt); |
| mutex_unlock(&vha->vha_tgt.tgt_mutex); |
| mutex_unlock(&qla_tgt_mutex); |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, |
| "Waiting for sess works (tgt %p)", tgt); |
| spin_lock_irqsave(&tgt->sess_work_lock, flags); |
| do { |
| spin_unlock_irqrestore(&tgt->sess_work_lock, flags); |
| flush_work(&tgt->sess_work); |
| spin_lock_irqsave(&tgt->sess_work_lock, flags); |
| } while (!list_empty(&tgt->sess_works_list)); |
| spin_unlock_irqrestore(&tgt->sess_work_lock, flags); |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, |
| "Waiting for tgt %p: sess_count=%d\n", tgt, tgt->sess_count); |
| |
| wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); |
| |
| /* Big hammer */ |
| 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) */ |
| wait_event_timeout(tgt->waitQ, test_tgt_sess_count(tgt), 10*HZ); |
| mutex_unlock(&ha->optrom_mutex); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(qlt_stop_phase1); |
| |
| /* Called by tcm_qla2xxx configfs code */ |
| void qlt_stop_phase2(struct qla_tgt *tgt) |
| { |
| scsi_qla_host_t *vha = tgt->vha; |
| |
| if (tgt->tgt_stopped) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04f, |
| "Already in tgt->tgt_stopped state\n"); |
| dump_stack(); |
| return; |
| } |
| if (!tgt->tgt_stop) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00b, |
| "%s: phase1 stop is not completed\n", __func__); |
| dump_stack(); |
| return; |
| } |
| |
| mutex_lock(&tgt->ha->optrom_mutex); |
| mutex_lock(&vha->vha_tgt.tgt_mutex); |
| tgt->tgt_stop = 0; |
| tgt->tgt_stopped = 1; |
| mutex_unlock(&vha->vha_tgt.tgt_mutex); |
| mutex_unlock(&tgt->ha->optrom_mutex); |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00c, "Stop of tgt %p finished\n", |
| tgt); |
| |
| switch (vha->qlini_mode) { |
| case QLA2XXX_INI_MODE_EXCLUSIVE: |
| vha->flags.online = 1; |
| set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); |
| break; |
| default: |
| break; |
| } |
| } |
| EXPORT_SYMBOL(qlt_stop_phase2); |
| |
| /* Called from qlt_remove_target() -> qla2x00_remove_one() */ |
| static void qlt_release(struct qla_tgt *tgt) |
| { |
| scsi_qla_host_t *vha = tgt->vha; |
| void *node; |
| u64 key = 0; |
| u16 i; |
| struct qla_qpair_hint *h; |
| struct qla_hw_data *ha = vha->hw; |
| |
| if (!tgt->tgt_stop && !tgt->tgt_stopped) |
| qlt_stop_phase1(tgt); |
| |
| if (!tgt->tgt_stopped) |
| qlt_stop_phase2(tgt); |
| |
| for (i = 0; i < vha->hw->max_qpairs + 1; i++) { |
| unsigned long flags; |
| |
| h = &tgt->qphints[i]; |
| if (h->qpair) { |
| spin_lock_irqsave(h->qpair->qp_lock_ptr, flags); |
| list_del(&h->hint_elem); |
| spin_unlock_irqrestore(h->qpair->qp_lock_ptr, flags); |
| h->qpair = NULL; |
| } |
| } |
| kfree(tgt->qphints); |
| mutex_lock(&qla_tgt_mutex); |
| list_del(&vha->vha_tgt.qla_tgt->tgt_list_entry); |
| mutex_unlock(&qla_tgt_mutex); |
| |
| btree_for_each_safe64(&tgt->lun_qpair_map, key, node) |
| btree_remove64(&tgt->lun_qpair_map, key); |
| |
| btree_destroy64(&tgt->lun_qpair_map); |
| |
| if (vha->vp_idx) |
| if (ha->tgt.tgt_ops && |
| ha->tgt.tgt_ops->remove_target && |
| vha->vha_tgt.target_lport_ptr) |
| ha->tgt.tgt_ops->remove_target(vha); |
| |
| vha->vha_tgt.qla_tgt = NULL; |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00d, |
| "Release of tgt %p finished\n", tgt); |
| |
| kfree(tgt); |
| } |
| |
| /* ha->hardware_lock supposed to be held on entry */ |
| static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, |
| const void *param, unsigned int param_size) |
| { |
| struct qla_tgt_sess_work_param *prm; |
| unsigned long flags; |
| |
| prm = kzalloc(sizeof(*prm), GFP_ATOMIC); |
| if (!prm) { |
| ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, |
| "qla_target(%d): Unable to create session " |
| "work, command will be refused", 0); |
| return -ENOMEM; |
| } |
| |
| ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, |
| "Scheduling work (type %d, prm %p)" |
| " to find session for param %p (size %d, tgt %p)\n", |
| type, prm, param, param_size, tgt); |
| |
| prm->type = type; |
| memcpy(&prm->tm_iocb, param, param_size); |
| |
| spin_lock_irqsave(&tgt->sess_work_lock, flags); |
| list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); |
| spin_unlock_irqrestore(&tgt->sess_work_lock, flags); |
| |
| schedule_work(&tgt->sess_work); |
| |
| return 0; |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| */ |
| static void qlt_send_notify_ack(struct qla_qpair *qpair, |
| struct imm_ntfy_from_isp *ntfy, |
| uint32_t add_flags, uint16_t resp_code, int resp_code_valid, |
| uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) |
| { |
| struct scsi_qla_host *vha = qpair->vha; |
| struct qla_hw_data *ha = vha->hw; |
| request_t *pkt; |
| struct nack_to_isp *nack; |
| |
| if (!ha->flags.fw_started) |
| return; |
| |
| ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); |
| |
| pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); |
| if (!pkt) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe049, |
| "qla_target(%d): %s failed: unable to allocate " |
| "request packet\n", vha->vp_idx, __func__); |
| return; |
| } |
| |
| if (vha->vha_tgt.qla_tgt != NULL) |
| vha->vha_tgt.qla_tgt->notify_ack_expected++; |
| |
| pkt->entry_type = NOTIFY_ACK_TYPE; |
| pkt->entry_count = 1; |
| |
| nack = (struct nack_to_isp *)pkt; |
| nack->ox_id = ntfy->ox_id; |
| |
| nack->u.isp24.handle = QLA_TGT_SKIP_HANDLE; |
| nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; |
| if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { |
| nack->u.isp24.flags = ntfy->u.isp24.flags & |
| cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); |
| } |
| nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; |
| nack->u.isp24.status = ntfy->u.isp24.status; |
| nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; |
| nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; |
| nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; |
| nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; |
| nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; |
| nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); |
| nack->u.isp24.srr_reject_code = srr_reject_code; |
| nack->u.isp24.srr_reject_code_expl = srr_explan; |
| nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; |
| |
| /* TODO qualify this with EDIF enable */ |
| if (ntfy->u.isp24.status_subcode == ELS_PLOGI && |
| (le16_to_cpu(ntfy->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { |
| nack->u.isp24.flags |= cpu_to_le16(NOTIFY_ACK_FLAGS_FCSP); |
| } |
| |
| ql_dbg(ql_dbg_tgt, vha, 0xe005, |
| "qla_target(%d): Sending 24xx Notify Ack %d\n", |
| vha->vp_idx, nack->u.isp24.status); |
| |
| /* Memory Barrier */ |
| wmb(); |
| qla2x00_start_iocbs(vha, qpair->req); |
| } |
| |
| static int qlt_build_abts_resp_iocb(struct qla_tgt_mgmt_cmd *mcmd) |
| { |
| struct scsi_qla_host *vha = mcmd->vha; |
| struct qla_hw_data *ha = vha->hw; |
| struct abts_resp_to_24xx *resp; |
| __le32 f_ctl; |
| uint32_t h; |
| uint8_t *p; |
| int rc; |
| struct abts_recv_from_24xx *abts = &mcmd->orig_iocb.abts; |
| struct qla_qpair *qpair = mcmd->qpair; |
| |
| ql_dbg(ql_dbg_tgt, vha, 0xe006, |
| "Sending task mgmt ABTS response (ha=%p, status=%x)\n", |
| ha, mcmd->fc_tm_rsp); |
| |
| rc = qlt_check_reserve_free_req(qpair, 1); |
| if (rc) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe04a, |
| "qla_target(%d): %s failed: unable to allocate request packet\n", |
| vha->vp_idx, __func__); |
| return -EAGAIN; |
| } |
| |
| resp = (struct abts_resp_to_24xx *)qpair->req->ring_ptr; |
| memset(resp, 0, sizeof(*resp)); |
| |
| h = qlt_make_handle(qpair); |
| if (unlikely(h == QLA_TGT_NULL_HANDLE)) { |
| /* |
| * CTIO type 7 from the firmware doesn't provide a way to |
| * know the initiator's LOOP ID, hence we can't find |
| * the session and, so, the command. |
| */ |
| return -EAGAIN; |
| } else { |
| qpair->req->outstanding_cmds[h] = (srb_t *)mcmd; |
| } |
| |
| resp->handle = make_handle(qpair->req->id, h); |
| resp->entry_type = ABTS_RESP_24XX; |
| resp->entry_count = 1; |
| resp->nport_handle = abts->nport_handle; |
| resp->vp_index = vha->vp_idx; |
| resp->sof_type = abts->sof_type; |
| resp->exchange_address = abts->exchange_address; |
| resp->fcp_hdr_le = abts->fcp_hdr_le; |
| f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | |
| F_CTL_LAST_SEQ | F_CTL_END_SEQ | |
| F_CTL_SEQ_INITIATIVE); |
| p = (uint8_t *)&f_ctl; |
| resp->fcp_hdr_le.f_ctl[0] = *p++; |
| resp->fcp_hdr_le.f_ctl[1] = *p++; |
| resp->fcp_hdr_le.f_ctl[2] = *p; |
| |
| resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; |
| resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; |
| |
| resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; |
| if (mcmd->fc_tm_rsp == FCP_TMF_CMPL) { |
| resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; |
| resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; |
| resp->payload.ba_acct.low_seq_cnt = 0x0000; |
| resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); |
| resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; |
| resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; |
| } else { |
| resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; |
| resp->payload.ba_rjt.reason_code = |
| BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; |
| /* Other bytes are zero */ |
| } |
| |
| vha->vha_tgt.qla_tgt->abts_resp_expected++; |
| |
| /* Memory Barrier */ |
| wmb(); |
| if (qpair->reqq_start_iocbs) |
| qpair->reqq_start_iocbs(qpair); |
| else |
| qla2x00_start_iocbs(vha, qpair->req); |
| |
| return rc; |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| */ |
| static void qlt_24xx_send_abts_resp(struct qla_qpair *qpair, |
| struct abts_recv_from_24xx *abts, uint32_t status, |
| bool ids_reversed) |
| { |
| struct scsi_qla_host *vha = qpair->vha; |
| struct qla_hw_data *ha = vha->hw; |
| struct abts_resp_to_24xx *resp; |
| __le32 f_ctl; |
| uint8_t *p; |
| |
| ql_dbg(ql_dbg_tgt, vha, 0xe006, |
| "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", |
| ha, abts, status); |
| |
| resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, |
| NULL); |
| if (!resp) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe04a, |
| "qla_target(%d): %s failed: unable to allocate " |
| "request packet", vha->vp_idx, __func__); |
| return; |
| } |
| |
| resp->entry_type = ABTS_RESP_24XX; |
| resp->handle = QLA_TGT_SKIP_HANDLE; |
| resp->entry_count = 1; |
| resp->nport_handle = abts->nport_handle; |
| resp->vp_index = vha->vp_idx; |
| resp->sof_type = abts->sof_type; |
| resp->exchange_address = abts->exchange_address; |
| resp->fcp_hdr_le = abts->fcp_hdr_le; |
| f_ctl = cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | |
| F_CTL_LAST_SEQ | F_CTL_END_SEQ | |
| F_CTL_SEQ_INITIATIVE); |
| p = (uint8_t *)&f_ctl; |
| resp->fcp_hdr_le.f_ctl[0] = *p++; |
| resp->fcp_hdr_le.f_ctl[1] = *p++; |
| resp->fcp_hdr_le.f_ctl[2] = *p; |
| if (ids_reversed) { |
| resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.d_id; |
| resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.s_id; |
| } else { |
| resp->fcp_hdr_le.d_id = abts->fcp_hdr_le.s_id; |
| resp->fcp_hdr_le.s_id = abts->fcp_hdr_le.d_id; |
| } |
| resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; |
| if (status == FCP_TMF_CMPL) { |
| resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; |
| resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; |
| resp->payload.ba_acct.low_seq_cnt = 0x0000; |
| resp->payload.ba_acct.high_seq_cnt = cpu_to_le16(0xFFFF); |
| resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; |
| resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; |
| } else { |
| resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; |
| resp->payload.ba_rjt.reason_code = |
| BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; |
| /* Other bytes are zero */ |
| } |
| |
| vha->vha_tgt.qla_tgt->abts_resp_expected++; |
| |
| /* Memory Barrier */ |
| wmb(); |
| if (qpair->reqq_start_iocbs) |
| qpair->reqq_start_iocbs(qpair); |
| else |
| qla2x00_start_iocbs(vha, qpair->req); |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| */ |
| static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, |
| struct qla_qpair *qpair, response_t *pkt, struct qla_tgt_mgmt_cmd *mcmd) |
| { |
| struct ctio7_to_24xx *ctio; |
| u16 tmp; |
| struct abts_recv_from_24xx *entry; |
| |
| ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs_ready(qpair, NULL); |
| if (ctio == NULL) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe04b, |
| "qla_target(%d): %s failed: unable to allocate " |
| "request packet\n", vha->vp_idx, __func__); |
| return; |
| } |
| |
| if (mcmd) |
| /* abts from remote port */ |
| entry = &mcmd->orig_iocb.abts; |
| else |
| /* abts from this driver. */ |
| entry = (struct abts_recv_from_24xx *)pkt; |
| |
| /* |
| * We've got on entrance firmware's response on by us generated |
| * ABTS response. So, in it ID fields are reversed. |
| */ |
| |
| ctio->entry_type = CTIO_TYPE7; |
| ctio->entry_count = 1; |
| ctio->nport_handle = entry->nport_handle; |
| ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; |
| ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); |
| ctio->vp_index = vha->vp_idx; |
| ctio->exchange_addr = entry->exchange_addr_to_abort; |
| tmp = (CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE); |
| |
| if (mcmd) { |
| ctio->initiator_id = entry->fcp_hdr_le.s_id; |
| |
| if (mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) |
| tmp |= (mcmd->abort_io_attr << 9); |
| else if (qpair->retry_term_cnt & 1) |
| tmp |= (0x4 << 9); |
| } else { |
| ctio->initiator_id = entry->fcp_hdr_le.d_id; |
| |
| if (qpair->retry_term_cnt & 1) |
| tmp |= (0x4 << 9); |
| } |
| ctio->u.status1.flags = cpu_to_le16(tmp); |
| ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; |
| |
| ql_dbg(ql_dbg_tgt, vha, 0xe007, |
| "Sending retry TERM EXCH CTIO7 flags %04xh oxid %04xh attr valid %x\n", |
| le16_to_cpu(ctio->u.status1.flags), |
| le16_to_cpu(ctio->u.status1.ox_id), |
| (mcmd && mcmd->flags & QLA24XX_MGMT_ABORT_IO_ATTR_VALID) ? 1 : 0); |
| |
| /* Memory Barrier */ |
| wmb(); |
| if (qpair->reqq_start_iocbs) |
| qpair->reqq_start_iocbs(qpair); |
| else |
| qla2x00_start_iocbs(vha, qpair->req); |
| |
| if (mcmd) |
| qlt_build_abts_resp_iocb(mcmd); |
| else |
| qlt_24xx_send_abts_resp(qpair, |
| (struct abts_recv_from_24xx *)entry, FCP_TMF_CMPL, true); |
| |
| } |
| |
| /* drop cmds for the given lun |
| * XXX only looks for cmds on the port through which lun reset was recieved |
| * XXX does not go through the list of other port (which may have cmds |
| * for the same lun) |
| */ |
| static void abort_cmds_for_lun(struct scsi_qla_host *vha, u64 lun, be_id_t s_id) |
| { |
| struct qla_tgt_sess_op *op; |
| struct qla_tgt_cmd *cmd; |
| uint32_t key; |
| unsigned long flags; |
| |
| key = sid_to_key(s_id); |
| spin_lock_irqsave(&vha->cmd_list_lock, flags); |
| list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { |
| uint32_t op_key; |
| u64 op_lun; |
| |
| op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); |
| op_lun = scsilun_to_int( |
| (struct scsi_lun *)&op->atio.u.isp24.fcp_cmnd.lun); |
| if (op_key == key && op_lun == lun) |
| op->aborted = true; |
| } |
| |
| list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { |
| uint32_t cmd_key; |
| u64 cmd_lun; |
| |
| cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); |
| cmd_lun = scsilun_to_int( |
| (struct scsi_lun *)&cmd->atio.u.isp24.fcp_cmnd.lun); |
| if (cmd_key == key && cmd_lun == lun) |
| cmd->aborted = 1; |
| } |
| spin_unlock_irqrestore(&vha->cmd_list_lock, flags); |
| } |
| |
| static struct qla_qpair_hint *qlt_find_qphint(struct scsi_qla_host *vha, |
| uint64_t unpacked_lun) |
| { |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| struct qla_qpair_hint *h = NULL; |
| |
| if (vha->flags.qpairs_available) { |
| h = btree_lookup64(&tgt->lun_qpair_map, unpacked_lun); |
| if (!h) |
| h = &tgt->qphints[0]; |
| } else { |
| h = &tgt->qphints[0]; |
| } |
| |
| return h; |
| } |
| |
| static void qlt_do_tmr_work(struct work_struct *work) |
| { |
| struct qla_tgt_mgmt_cmd *mcmd = |
| container_of(work, struct qla_tgt_mgmt_cmd, work); |
| struct qla_hw_data *ha = mcmd->vha->hw; |
| int rc; |
| uint32_t tag; |
| unsigned long flags; |
| |
| switch (mcmd->tmr_func) { |
| case QLA_TGT_ABTS: |
| tag = le32_to_cpu(mcmd->orig_iocb.abts.exchange_addr_to_abort); |
| break; |
| default: |
| tag = 0; |
| break; |
| } |
| |
| rc = ha->tgt.tgt_ops->handle_tmr(mcmd, mcmd->unpacked_lun, |
| mcmd->tmr_func, tag); |
| |
| if (rc != 0) { |
| spin_lock_irqsave(mcmd->qpair->qp_lock_ptr, flags); |
| switch (mcmd->tmr_func) { |
| case QLA_TGT_ABTS: |
| mcmd->fc_tm_rsp = FCP_TMF_REJECTED; |
| qlt_build_abts_resp_iocb(mcmd); |
| break; |
| case QLA_TGT_LUN_RESET: |
| case QLA_TGT_CLEAR_TS: |
| case QLA_TGT_ABORT_TS: |
| case QLA_TGT_CLEAR_ACA: |
| case QLA_TGT_TARGET_RESET: |
| qlt_send_busy(mcmd->qpair, &mcmd->orig_iocb.atio, |
| qla_sam_status); |
| break; |
| |
| case QLA_TGT_ABORT_ALL: |
| case QLA_TGT_NEXUS_LOSS_SESS: |
| case QLA_TGT_NEXUS_LOSS: |
| qlt_send_notify_ack(mcmd->qpair, |
| &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); |
| break; |
| } |
| spin_unlock_irqrestore(mcmd->qpair->qp_lock_ptr, flags); |
| |
| ql_dbg(ql_dbg_tgt_mgt, mcmd->vha, 0xf052, |
| "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", |
| mcmd->vha->vp_idx, rc); |
| mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); |
| } |
| } |
| |
| /* ha->hardware_lock supposed to be held on entry */ |
| static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, |
| struct abts_recv_from_24xx *abts, struct fc_port *sess) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct qla_tgt_mgmt_cmd *mcmd; |
| struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; |
| struct qla_tgt_cmd *abort_cmd; |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, |
| "qla_target(%d): task abort (tag=%d)\n", |
| vha->vp_idx, abts->exchange_addr_to_abort); |
| |
| mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); |
| if (mcmd == NULL) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, |
| "qla_target(%d): %s: Allocation of ABORT cmd failed", |
| vha->vp_idx, __func__); |
| return -ENOMEM; |
| } |
| memset(mcmd, 0, sizeof(*mcmd)); |
| mcmd->cmd_type = TYPE_TGT_TMCMD; |
| mcmd->sess = sess; |
| memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); |
| mcmd->reset_count = ha->base_qpair->chip_reset; |
| mcmd->tmr_func = QLA_TGT_ABTS; |
| mcmd->qpair = h->qpair; |
| mcmd->vha = vha; |
| |
| /* |
| * LUN is looked up by target-core internally based on the passed |
| * abts->exchange_addr_to_abort tag. |
| */ |
| mcmd->se_cmd.cpuid = h->cpuid; |
| |
| abort_cmd = ha->tgt.tgt_ops->find_cmd_by_tag(sess, |
| le32_to_cpu(abts->exchange_addr_to_abort)); |
| if (!abort_cmd) { |
| mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); |
| return -EIO; |
| } |
| mcmd->unpacked_lun = abort_cmd->se_cmd.orig_fe_lun; |
| |
| if (abort_cmd->qpair) { |
| mcmd->qpair = abort_cmd->qpair; |
| mcmd->se_cmd.cpuid = abort_cmd->se_cmd.cpuid; |
| mcmd->abort_io_attr = abort_cmd->atio.u.isp24.attr; |
| mcmd->flags = QLA24XX_MGMT_ABORT_IO_ATTR_VALID; |
| } |
| |
| INIT_WORK(&mcmd->work, qlt_do_tmr_work); |
| queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, &mcmd->work); |
| |
| return 0; |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| */ |
| static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, |
| struct abts_recv_from_24xx *abts) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct fc_port *sess; |
| uint32_t tag = le32_to_cpu(abts->exchange_addr_to_abort); |
| be_id_t s_id; |
| int rc; |
| unsigned long flags; |
| |
| if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, |
| "qla_target(%d): ABTS: Abort Sequence not " |
| "supported\n", vha->vp_idx); |
| qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, |
| false); |
| return; |
| } |
| |
| if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, |
| "qla_target(%d): ABTS: Unknown Exchange " |
| "Address received\n", vha->vp_idx); |
| qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, |
| false); |
| return; |
| } |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, |
| "qla_target(%d): task abort (s_id=%x:%x:%x, " |
| "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id.domain, |
| abts->fcp_hdr_le.s_id.area, abts->fcp_hdr_le.s_id.al_pa, tag, |
| le32_to_cpu(abts->fcp_hdr_le.parameter)); |
| |
| s_id = le_id_to_be(abts->fcp_hdr_le.s_id); |
| |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags); |
| sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); |
| if (!sess) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, |
| "qla_target(%d): task abort for non-existent session\n", |
| vha->vp_idx); |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| |
| qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, |
| false); |
| return; |
| } |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| |
| |
| if (sess->deleted) { |
| qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, |
| false); |
| return; |
| } |
| |
| rc = __qlt_24xx_handle_abts(vha, abts, sess); |
| if (rc != 0) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, |
| "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", |
| vha->vp_idx, rc); |
| qlt_24xx_send_abts_resp(ha->base_qpair, abts, FCP_TMF_REJECTED, |
| false); |
| return; |
| } |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| */ |
| static void qlt_24xx_send_task_mgmt_ctio(struct qla_qpair *qpair, |
| struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) |
| { |
| struct scsi_qla_host *ha = mcmd->vha; |
| struct atio_from_isp *atio = &mcmd->orig_iocb.atio; |
| struct ctio7_to_24xx *ctio; |
| uint16_t temp; |
| |
| ql_dbg(ql_dbg_tgt, ha, 0xe008, |
| "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", |
| ha, atio, resp_code); |
| |
| |
| ctio = (struct ctio7_to_24xx *)__qla2x00_alloc_iocbs(qpair, NULL); |
| if (ctio == NULL) { |
| ql_dbg(ql_dbg_tgt, ha, 0xe04c, |
| "qla_target(%d): %s failed: unable to allocate " |
| "request packet\n", ha->vp_idx, __func__); |
| return; |
| } |
| |
| ctio->entry_type = CTIO_TYPE7; |
| ctio->entry_count = 1; |
| ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; |
| ctio->nport_handle = cpu_to_le16(mcmd->sess->loop_id); |
| ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); |
| ctio->vp_index = ha->vp_idx; |
| ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); |
| ctio->exchange_addr = atio->u.isp24.exchange_addr; |
| temp = (atio->u.isp24.attr << 9)| |
| CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; |
| ctio->u.status1.flags = cpu_to_le16(temp); |
| temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); |
| ctio->u.status1.ox_id = cpu_to_le16(temp); |
| ctio->u.status1.scsi_status = |
| cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); |
| ctio->u.status1.response_len = cpu_to_le16(8); |
| ctio->u.status1.sense_data[0] = resp_code; |
| |
| /* Memory Barrier */ |
| wmb(); |
| if (qpair->reqq_start_iocbs) |
| qpair->reqq_start_iocbs(qpair); |
| else |
| qla2x00_start_iocbs(ha, qpair->req); |
| } |
| |
| void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) |
| { |
| mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); |
| } |
| EXPORT_SYMBOL(qlt_free_mcmd); |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. Might drop it, then |
| * reacquire |
| */ |
| void qlt_send_resp_ctio(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, |
| uint8_t scsi_status, uint8_t sense_key, uint8_t asc, uint8_t ascq) |
| { |
| struct atio_from_isp *atio = &cmd->atio; |
| struct ctio7_to_24xx *ctio; |
| uint16_t temp; |
| struct scsi_qla_host *vha = cmd->vha; |
| |
| ql_dbg(ql_dbg_tgt_dif, vha, 0x3066, |
| "Sending response CTIO7 (vha=%p, atio=%p, scsi_status=%02x, " |
| "sense_key=%02x, asc=%02x, ascq=%02x", |
| vha, atio, scsi_status, sense_key, asc, ascq); |
| |
| ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); |
| if (!ctio) { |
| ql_dbg(ql_dbg_async, vha, 0x3067, |
| "qla2x00t(%ld): %s failed: unable to allocate request packet", |
| vha->host_no, __func__); |
| goto out; |
| } |
| |
| ctio->entry_type = CTIO_TYPE7; |
| ctio->entry_count = 1; |
| ctio->handle = QLA_TGT_SKIP_HANDLE; |
| ctio->nport_handle = cpu_to_le16(cmd->sess->loop_id); |
| ctio->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); |
| ctio->vp_index = vha->vp_idx; |
| ctio->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); |
| ctio->exchange_addr = atio->u.isp24.exchange_addr; |
| temp = (atio->u.isp24.attr << 9) | |
| CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS; |
| ctio->u.status1.flags = cpu_to_le16(temp); |
| temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); |
| ctio->u.status1.ox_id = cpu_to_le16(temp); |
| ctio->u.status1.scsi_status = |
| cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID | scsi_status); |
| ctio->u.status1.response_len = cpu_to_le16(18); |
| ctio->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); |
| |
| if (ctio->u.status1.residual != 0) |
| ctio->u.status1.scsi_status |= |
| cpu_to_le16(SS_RESIDUAL_UNDER); |
| |
| /* Fixed format sense data. */ |
| ctio->u.status1.sense_data[0] = 0x70; |
| ctio->u.status1.sense_data[2] = sense_key; |
| /* Additional sense length */ |
| ctio->u.status1.sense_data[7] = 0xa; |
| /* ASC and ASCQ */ |
| ctio->u.status1.sense_data[12] = asc; |
| ctio->u.status1.sense_data[13] = ascq; |
| |
| /* Memory Barrier */ |
| wmb(); |
| |
| if (qpair->reqq_start_iocbs) |
| qpair->reqq_start_iocbs(qpair); |
| else |
| qla2x00_start_iocbs(vha, qpair->req); |
| |
| out: |
| return; |
| } |
| |
| /* callback from target fabric module code */ |
| void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) |
| { |
| struct scsi_qla_host *vha = mcmd->sess->vha; |
| struct qla_hw_data *ha = vha->hw; |
| unsigned long flags; |
| struct qla_qpair *qpair = mcmd->qpair; |
| bool free_mcmd = true; |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, |
| "TM response mcmd (%p) status %#x state %#x", |
| mcmd, mcmd->fc_tm_rsp, mcmd->flags); |
| |
| spin_lock_irqsave(qpair->qp_lock_ptr, flags); |
| |
| if (!vha->flags.online || mcmd->reset_count != qpair->chip_reset) { |
| /* |
| * Either the port is not online or this request was from |
| * previous life, just abort the processing. |
| */ |
| ql_dbg(ql_dbg_async, vha, 0xe100, |
| "RESET-TMR online/active/old-count/new-count = %d/%d/%d/%d.\n", |
| vha->flags.online, qla2x00_reset_active(vha), |
| mcmd->reset_count, qpair->chip_reset); |
| ha->tgt.tgt_ops->free_mcmd(mcmd); |
| spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); |
| return; |
| } |
| |
| if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) { |
| switch (mcmd->orig_iocb.imm_ntfy.u.isp24.status_subcode) { |
| case ELS_LOGO: |
| case ELS_PRLO: |
| case ELS_TPRLO: |
| ql_dbg(ql_dbg_disc, vha, 0x2106, |
| "TM response logo %8phC status %#x state %#x", |
| mcmd->sess->port_name, mcmd->fc_tm_rsp, |
| mcmd->flags); |
| qlt_schedule_sess_for_deletion(mcmd->sess); |
| break; |
| default: |
| qlt_send_notify_ack(vha->hw->base_qpair, |
| &mcmd->orig_iocb.imm_ntfy, 0, 0, 0, 0, 0, 0); |
| break; |
| } |
| } else { |
| if (mcmd->orig_iocb.atio.u.raw.entry_type == ABTS_RECV_24XX) { |
| qlt_build_abts_resp_iocb(mcmd); |
| free_mcmd = false; |
| } else |
| qlt_24xx_send_task_mgmt_ctio(qpair, mcmd, |
| mcmd->fc_tm_rsp); |
| } |
| /* |
| * Make the callback for ->free_mcmd() to queue_work() and invoke |
| * target_put_sess_cmd() to drop cmd_kref to 1. The final |
| * target_put_sess_cmd() call will be made from TFO->check_stop_free() |
| * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd |
| * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> |
| * qlt_xmit_tm_rsp() returns here.. |
| */ |
| if (free_mcmd) |
| ha->tgt.tgt_ops->free_mcmd(mcmd); |
| |
| spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); |
| } |
| EXPORT_SYMBOL(qlt_xmit_tm_rsp); |
| |
| /* No locks */ |
| static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) |
| { |
| struct qla_tgt_cmd *cmd = prm->cmd; |
| |
| BUG_ON(cmd->sg_cnt == 0); |
| |
| prm->sg = (struct scatterlist *)cmd->sg; |
| prm->seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, cmd->sg, |
| cmd->sg_cnt, cmd->dma_data_direction); |
| if (unlikely(prm->seg_cnt == 0)) |
| goto out_err; |
| |
| prm->cmd->sg_mapped = 1; |
| |
| if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) { |
| /* |
| * If greater than four sg entries then we need to allocate |
| * the continuation entries |
| */ |
| if (prm->seg_cnt > QLA_TGT_DATASEGS_PER_CMD_24XX) |
| prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - |
| QLA_TGT_DATASEGS_PER_CMD_24XX, |
| QLA_TGT_DATASEGS_PER_CONT_24XX); |
| } else { |
| /* DIF */ |
| if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || |
| (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { |
| prm->seg_cnt = DIV_ROUND_UP(cmd->bufflen, cmd->blk_sz); |
| prm->tot_dsds = prm->seg_cnt; |
| } else |
| prm->tot_dsds = prm->seg_cnt; |
| |
| if (cmd->prot_sg_cnt) { |
| prm->prot_sg = cmd->prot_sg; |
| prm->prot_seg_cnt = dma_map_sg(&cmd->qpair->pdev->dev, |
| cmd->prot_sg, cmd->prot_sg_cnt, |
| cmd->dma_data_direction); |
| if (unlikely(prm->prot_seg_cnt == 0)) |
| goto out_err; |
| |
| if ((cmd->se_cmd.prot_op == TARGET_PROT_DIN_INSERT) || |
| (cmd->se_cmd.prot_op == TARGET_PROT_DOUT_STRIP)) { |
| /* Dif Bundling not support here */ |
| prm->prot_seg_cnt = DIV_ROUND_UP(cmd->bufflen, |
| cmd->blk_sz); |
| prm->tot_dsds += prm->prot_seg_cnt; |
| } else |
| prm->tot_dsds += prm->prot_seg_cnt; |
| } |
| } |
| |
| return 0; |
| |
| out_err: |
| ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe04d, |
| "qla_target(%d): PCI mapping failed: sg_cnt=%d", |
| 0, prm->cmd->sg_cnt); |
| return -1; |
| } |
| |
| static void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd) |
| { |
| struct qla_hw_data *ha; |
| struct qla_qpair *qpair; |
| |
| if (!cmd->sg_mapped) |
| return; |
| |
| qpair = cmd->qpair; |
| |
| dma_unmap_sg(&qpair->pdev->dev, cmd->sg, cmd->sg_cnt, |
| cmd->dma_data_direction); |
| cmd->sg_mapped = 0; |
| |
| if (cmd->prot_sg_cnt) |
| dma_unmap_sg(&qpair->pdev->dev, cmd->prot_sg, cmd->prot_sg_cnt, |
| cmd->dma_data_direction); |
| |
| if (!cmd->ctx) |
| return; |
| ha = vha->hw; |
| if (cmd->ctx_dsd_alloced) |
| qla2x00_clean_dsd_pool(ha, cmd->ctx); |
| |
| dma_pool_free(ha->dl_dma_pool, cmd->ctx, cmd->ctx->crc_ctx_dma); |
| } |
| |
| static int qlt_check_reserve_free_req(struct qla_qpair *qpair, |
| uint32_t req_cnt) |
| { |
| uint32_t cnt; |
| struct req_que *req = qpair->req; |
| |
| if (req->cnt < (req_cnt + 2)) { |
| cnt = (uint16_t)(qpair->use_shadow_reg ? *req->out_ptr : |
| rd_reg_dword_relaxed(req->req_q_out)); |
| |
| if (req->ring_index < cnt) |
| req->cnt = cnt - req->ring_index; |
| else |
| req->cnt = req->length - (req->ring_index - cnt); |
| |
| if (unlikely(req->cnt < (req_cnt + 2))) |
| return -EAGAIN; |
| } |
| |
| req->cnt -= req_cnt; |
| |
| return 0; |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| */ |
| static inline void *qlt_get_req_pkt(struct req_que *req) |
| { |
| /* Adjust ring index. */ |
| req->ring_index++; |
| if (req->ring_index == req->length) { |
| req->ring_index = 0; |
| req->ring_ptr = req->ring; |
| } else { |
| req->ring_ptr++; |
| } |
| return (cont_entry_t *)req->ring_ptr; |
| } |
| |
| /* ha->hardware_lock supposed to be held on entry */ |
| static inline uint32_t qlt_make_handle(struct qla_qpair *qpair) |
| { |
| uint32_t h; |
| int index; |
| uint8_t found = 0; |
| struct req_que *req = qpair->req; |
| |
| h = req->current_outstanding_cmd; |
| |
| for (index = 1; index < req->num_outstanding_cmds; index++) { |
| h++; |
| if (h == req->num_outstanding_cmds) |
| h = 1; |
| |
| if (h == QLA_TGT_SKIP_HANDLE) |
| continue; |
| |
| if (!req->outstanding_cmds[h]) { |
| found = 1; |
| break; |
| } |
| } |
| |
| if (found) { |
| req->current_outstanding_cmd = h; |
| } else { |
| ql_dbg(ql_dbg_io, qpair->vha, 0x305b, |
| "qla_target(%d): Ran out of empty cmd slots\n", |
| qpair->vha->vp_idx); |
| h = QLA_TGT_NULL_HANDLE; |
| } |
| |
| return h; |
| } |
| |
| /* ha->hardware_lock supposed to be held on entry */ |
| static int qlt_24xx_build_ctio_pkt(struct qla_qpair *qpair, |
| struct qla_tgt_prm *prm) |
| { |
| uint32_t h; |
| struct ctio7_to_24xx *pkt; |
| struct atio_from_isp *atio = &prm->cmd->atio; |
| uint16_t temp; |
| struct qla_tgt_cmd *cmd = prm->cmd; |
| |
| pkt = (struct ctio7_to_24xx *)qpair->req->ring_ptr; |
| prm->pkt = pkt; |
| memset(pkt, 0, sizeof(*pkt)); |
| |
| pkt->entry_type = CTIO_TYPE7; |
| pkt->entry_count = (uint8_t)prm->req_cnt; |
| pkt->vp_index = prm->cmd->vp_idx; |
| |
| h = qlt_make_handle(qpair); |
| if (unlikely(h == QLA_TGT_NULL_HANDLE)) { |
| /* |
| * CTIO type 7 from the firmware doesn't provide a way to |
| * know the initiator's LOOP ID, hence we can't find |
| * the session and, so, the command. |
| */ |
| return -EAGAIN; |
| } else |
| qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; |
| |
| pkt->handle = make_handle(qpair->req->id, h); |
| pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; |
| pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); |
| pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); |
| pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); |
| pkt->exchange_addr = atio->u.isp24.exchange_addr; |
| temp = atio->u.isp24.attr << 9; |
| pkt->u.status0.flags |= cpu_to_le16(temp); |
| temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); |
| pkt->u.status0.ox_id = cpu_to_le16(temp); |
| pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); |
| |
| if (cmd->edif) { |
| if (cmd->dma_data_direction == DMA_TO_DEVICE) |
| prm->cmd->sess->edif.rx_bytes += cmd->bufflen; |
| if (cmd->dma_data_direction == DMA_FROM_DEVICE) |
| prm->cmd->sess->edif.tx_bytes += cmd->bufflen; |
| |
| pkt->u.status0.edif_flags |= EF_EN_EDIF; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. We have already made sure |
| * that there is sufficient amount of request entries to not drop it. |
| */ |
| static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm) |
| { |
| int cnt; |
| struct dsd64 *cur_dsd; |
| |
| /* Build continuation packets */ |
| while (prm->seg_cnt > 0) { |
| cont_a64_entry_t *cont_pkt64 = |
| (cont_a64_entry_t *)qlt_get_req_pkt( |
| prm->cmd->qpair->req); |
| |
| /* |
| * Make sure that from cont_pkt64 none of |
| * 64-bit specific fields used for 32-bit |
| * addressing. Cast to (cont_entry_t *) for |
| * that. |
| */ |
| |
| memset(cont_pkt64, 0, sizeof(*cont_pkt64)); |
| |
| cont_pkt64->entry_count = 1; |
| cont_pkt64->sys_define = 0; |
| |
| cont_pkt64->entry_type = CONTINUE_A64_TYPE; |
| cur_dsd = cont_pkt64->dsd; |
| |
| /* Load continuation entry data segments */ |
| for (cnt = 0; |
| cnt < QLA_TGT_DATASEGS_PER_CONT_24XX && prm->seg_cnt; |
| cnt++, prm->seg_cnt--) { |
| append_dsd64(&cur_dsd, prm->sg); |
| prm->sg = sg_next(prm->sg); |
| } |
| } |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. We have already made sure |
| * that there is sufficient amount of request entries to not drop it. |
| */ |
| static void qlt_load_data_segments(struct qla_tgt_prm *prm) |
| { |
| int cnt; |
| struct dsd64 *cur_dsd; |
| struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; |
| |
| pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); |
| |
| /* Setup packet address segment pointer */ |
| cur_dsd = &pkt24->u.status0.dsd; |
| |
| /* Set total data segment count */ |
| if (prm->seg_cnt) |
| pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); |
| |
| if (prm->seg_cnt == 0) { |
| /* No data transfer */ |
| cur_dsd->address = 0; |
| cur_dsd->length = 0; |
| return; |
| } |
| |
| /* If scatter gather */ |
| |
| /* Load command entry data segments */ |
| for (cnt = 0; |
| (cnt < QLA_TGT_DATASEGS_PER_CMD_24XX) && prm->seg_cnt; |
| cnt++, prm->seg_cnt--) { |
| append_dsd64(&cur_dsd, prm->sg); |
| prm->sg = sg_next(prm->sg); |
| } |
| |
| qlt_load_cont_data_segments(prm); |
| } |
| |
| static inline int qlt_has_data(struct qla_tgt_cmd *cmd) |
| { |
| return cmd->bufflen > 0; |
| } |
| |
| static void qlt_print_dif_err(struct qla_tgt_prm *prm) |
| { |
| struct qla_tgt_cmd *cmd; |
| struct scsi_qla_host *vha; |
| |
| /* asc 0x10=dif error */ |
| if (prm->sense_buffer && (prm->sense_buffer[12] == 0x10)) { |
| cmd = prm->cmd; |
| vha = cmd->vha; |
| /* ASCQ */ |
| switch (prm->sense_buffer[13]) { |
| case 1: |
| ql_dbg(ql_dbg_tgt_dif, vha, 0xe00b, |
| "BE detected Guard TAG ERR: lba[0x%llx|%lld] len[0x%x] " |
| "se_cmd=%p tag[%x]", |
| cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, |
| cmd->atio.u.isp24.exchange_addr); |
| break; |
| case 2: |
| ql_dbg(ql_dbg_tgt_dif, vha, 0xe00c, |
| "BE detected APP TAG ERR: lba[0x%llx|%lld] len[0x%x] " |
| "se_cmd=%p tag[%x]", |
| cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, |
| cmd->atio.u.isp24.exchange_addr); |
| break; |
| case 3: |
| ql_dbg(ql_dbg_tgt_dif, vha, 0xe00f, |
| "BE detected REF TAG ERR: lba[0x%llx|%lld] len[0x%x] " |
| "se_cmd=%p tag[%x]", |
| cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, |
| cmd->atio.u.isp24.exchange_addr); |
| break; |
| default: |
| ql_dbg(ql_dbg_tgt_dif, vha, 0xe010, |
| "BE detected Dif ERR: lba[%llx|%lld] len[%x] " |
| "se_cmd=%p tag[%x]", |
| cmd->lba, cmd->lba, cmd->num_blks, &cmd->se_cmd, |
| cmd->atio.u.isp24.exchange_addr); |
| break; |
| } |
| ql_dump_buffer(ql_dbg_tgt_dif, vha, 0xe011, cmd->cdb, 16); |
| } |
| } |
| |
| /* |
| * Called without ha->hardware_lock held |
| */ |
| static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, |
| struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, |
| uint32_t *full_req_cnt) |
| { |
| struct se_cmd *se_cmd = &cmd->se_cmd; |
| struct qla_qpair *qpair = cmd->qpair; |
| |
| prm->cmd = cmd; |
| prm->tgt = cmd->tgt; |
| prm->pkt = NULL; |
| prm->rq_result = scsi_status; |
| prm->sense_buffer = &cmd->sense_buffer[0]; |
| prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; |
| prm->sg = NULL; |
| prm->seg_cnt = -1; |
| prm->req_cnt = 1; |
| prm->residual = 0; |
| prm->add_status_pkt = 0; |
| prm->prot_sg = NULL; |
| prm->prot_seg_cnt = 0; |
| prm->tot_dsds = 0; |
| |
| if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { |
| if (qlt_pci_map_calc_cnt(prm) != 0) |
| return -EAGAIN; |
| } |
| |
| *full_req_cnt = prm->req_cnt; |
| |
| if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { |
| prm->residual = se_cmd->residual_count; |
| ql_dbg_qp(ql_dbg_io + ql_dbg_verbose, qpair, 0x305c, |
| "Residual underflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", |
| prm->residual, se_cmd->tag, |
| se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, |
| cmd->bufflen, prm->rq_result); |
| prm->rq_result |= SS_RESIDUAL_UNDER; |
| } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { |
| prm->residual = se_cmd->residual_count; |
| ql_dbg_qp(ql_dbg_io, qpair, 0x305d, |
| "Residual overflow: %d (tag %lld, op %x, bufflen %d, rq_result %x)\n", |
| prm->residual, se_cmd->tag, se_cmd->t_task_cdb ? |
| se_cmd->t_task_cdb[0] : 0, cmd->bufflen, prm->rq_result); |
| prm->rq_result |= SS_RESIDUAL_OVER; |
| } |
| |
| if (xmit_type & QLA_TGT_XMIT_STATUS) { |
| /* |
| * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be |
| * ignored in *xmit_response() below |
| */ |
| if (qlt_has_data(cmd)) { |
| if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || |
| (IS_FWI2_CAPABLE(cmd->vha->hw) && |
| (prm->rq_result != 0))) { |
| prm->add_status_pkt = 1; |
| (*full_req_cnt)++; |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static inline int qlt_need_explicit_conf(struct qla_tgt_cmd *cmd, |
| int sending_sense) |
| { |
| if (cmd->qpair->enable_class_2) |
| return 0; |
| |
| if (sending_sense) |
| return cmd->conf_compl_supported; |
| else |
| return cmd->qpair->enable_explicit_conf && |
| cmd->conf_compl_supported; |
| } |
| |
| static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, |
| struct qla_tgt_prm *prm) |
| { |
| prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, |
| (uint32_t)sizeof(ctio->u.status1.sense_data)); |
| ctio->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); |
| if (qlt_need_explicit_conf(prm->cmd, 0)) { |
| ctio->u.status0.flags |= cpu_to_le16( |
| CTIO7_FLAGS_EXPLICIT_CONFORM | |
| CTIO7_FLAGS_CONFORM_REQ); |
| } |
| ctio->u.status0.residual = cpu_to_le32(prm->residual); |
| ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); |
| if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { |
| int i; |
| |
| if (qlt_need_explicit_conf(prm->cmd, 1)) { |
| if ((prm->rq_result & SS_SCSI_STATUS_BYTE) != 0) { |
| ql_dbg_qp(ql_dbg_tgt, prm->cmd->qpair, 0xe017, |
| "Skipping EXPLICIT_CONFORM and " |
| "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " |
| "non GOOD status\n"); |
| goto skip_explict_conf; |
| } |
| ctio->u.status1.flags |= cpu_to_le16( |
| CTIO7_FLAGS_EXPLICIT_CONFORM | |
| CTIO7_FLAGS_CONFORM_REQ); |
| } |
| skip_explict_conf: |
| ctio->u.status1.flags &= |
| ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); |
| ctio->u.status1.flags |= |
| cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); |
| ctio->u.status1.scsi_status |= |
| cpu_to_le16(SS_SENSE_LEN_VALID); |
| ctio->u.status1.sense_length = |
| cpu_to_le16(prm->sense_buffer_len); |
| for (i = 0; i < prm->sense_buffer_len/4; i++) { |
| uint32_t v; |
| |
| v = get_unaligned_be32( |
| &((uint32_t *)prm->sense_buffer)[i]); |
| put_unaligned_le32(v, |
| &((uint32_t *)ctio->u.status1.sense_data)[i]); |
| } |
| qlt_print_dif_err(prm); |
| |
| } else { |
| ctio->u.status1.flags &= |
| ~cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); |
| ctio->u.status1.flags |= |
| cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); |
| ctio->u.status1.sense_length = 0; |
| memset(ctio->u.status1.sense_data, 0, |
| sizeof(ctio->u.status1.sense_data)); |
| } |
| |
| /* Sense with len > 24, is it possible ??? */ |
| } |
| |
| static inline int |
| qlt_hba_err_chk_enabled(struct se_cmd *se_cmd) |
| { |
| switch (se_cmd->prot_op) { |
| case TARGET_PROT_DOUT_INSERT: |
| case TARGET_PROT_DIN_STRIP: |
| if (ql2xenablehba_err_chk >= 1) |
| return 1; |
| break; |
| case TARGET_PROT_DOUT_PASS: |
| case TARGET_PROT_DIN_PASS: |
| if (ql2xenablehba_err_chk >= 2) |
| return 1; |
| break; |
| case TARGET_PROT_DIN_INSERT: |
| case TARGET_PROT_DOUT_STRIP: |
| return 1; |
| default: |
| break; |
| } |
| return 0; |
| } |
| |
| static inline int |
| qla_tgt_ref_mask_check(struct se_cmd *se_cmd) |
| { |
| switch (se_cmd->prot_op) { |
| case TARGET_PROT_DIN_INSERT: |
| case TARGET_PROT_DOUT_INSERT: |
| case TARGET_PROT_DIN_STRIP: |
| case TARGET_PROT_DOUT_STRIP: |
| case TARGET_PROT_DIN_PASS: |
| case TARGET_PROT_DOUT_PASS: |
| return 1; |
| default: |
| return 0; |
| } |
| return 0; |
| } |
| |
| /* |
| * qla_tgt_set_dif_tags - Extract Ref and App tags from SCSI command |
| */ |
| static void |
| qla_tgt_set_dif_tags(struct qla_tgt_cmd *cmd, struct crc_context *ctx, |
| uint16_t *pfw_prot_opts) |
| { |
| struct se_cmd *se_cmd = &cmd->se_cmd; |
| uint32_t lba = 0xffffffff & se_cmd->t_task_lba; |
| scsi_qla_host_t *vha = cmd->tgt->vha; |
| struct qla_hw_data *ha = vha->hw; |
| uint32_t t32 = 0; |
| |
| /* |
| * wait till Mode Sense/Select cmd, modepage Ah, subpage 2 |
| * have been immplemented by TCM, before AppTag is avail. |
| * Look for modesense_handlers[] |
| */ |
| ctx->app_tag = 0; |
| ctx->app_tag_mask[0] = 0x0; |
| ctx->app_tag_mask[1] = 0x0; |
| |
| if (IS_PI_UNINIT_CAPABLE(ha)) { |
| if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || |
| (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) |
| *pfw_prot_opts |= PO_DIS_VALD_APP_ESC; |
| else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) |
| *pfw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; |
| } |
| |
| t32 = ha->tgt.tgt_ops->get_dif_tags(cmd, pfw_prot_opts); |
| |
| switch (se_cmd->prot_type) { |
| case TARGET_DIF_TYPE0_PROT: |
| /* |
| * No check for ql2xenablehba_err_chk, as it |
| * would be an I/O error if hba tag generation |
| * is not done. |
| */ |
| ctx->ref_tag = cpu_to_le32(lba); |
| /* enable ALL bytes of the ref tag */ |
| ctx->ref_tag_mask[0] = 0xff; |
| ctx->ref_tag_mask[1] = 0xff; |
| ctx->ref_tag_mask[2] = 0xff; |
| ctx->ref_tag_mask[3] = 0xff; |
| break; |
| case TARGET_DIF_TYPE1_PROT: |
| /* |
| * For TYPE 1 protection: 16 bit GUARD tag, 32 bit |
| * REF tag, and 16 bit app tag. |
| */ |
| ctx->ref_tag = cpu_to_le32(lba); |
| if (!qla_tgt_ref_mask_check(se_cmd) || |
| !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { |
| *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; |
| break; |
| } |
| /* enable ALL bytes of the ref tag */ |
| ctx->ref_tag_mask[0] = 0xff; |
| ctx->ref_tag_mask[1] = 0xff; |
| ctx->ref_tag_mask[2] = 0xff; |
| ctx->ref_tag_mask[3] = 0xff; |
| break; |
| case TARGET_DIF_TYPE2_PROT: |
| /* |
| * For TYPE 2 protection: 16 bit GUARD + 32 bit REF |
| * tag has to match LBA in CDB + N |
| */ |
| ctx->ref_tag = cpu_to_le32(lba); |
| if (!qla_tgt_ref_mask_check(se_cmd) || |
| !(ha->tgt.tgt_ops->chk_dif_tags(t32))) { |
| *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; |
| break; |
| } |
| /* enable ALL bytes of the ref tag */ |
| ctx->ref_tag_mask[0] = 0xff; |
| ctx->ref_tag_mask[1] = 0xff; |
| ctx->ref_tag_mask[2] = 0xff; |
| ctx->ref_tag_mask[3] = 0xff; |
| break; |
| case TARGET_DIF_TYPE3_PROT: |
| /* For TYPE 3 protection: 16 bit GUARD only */ |
| *pfw_prot_opts |= PO_DIS_REF_TAG_VALD; |
| ctx->ref_tag_mask[0] = ctx->ref_tag_mask[1] = |
| ctx->ref_tag_mask[2] = ctx->ref_tag_mask[3] = 0x00; |
| break; |
| } |
| } |
| |
| static inline int |
| qlt_build_ctio_crc2_pkt(struct qla_qpair *qpair, struct qla_tgt_prm *prm) |
| { |
| struct dsd64 *cur_dsd; |
| uint32_t transfer_length = 0; |
| uint32_t data_bytes; |
| uint32_t dif_bytes; |
| uint8_t bundling = 1; |
| struct crc_context *crc_ctx_pkt = NULL; |
| struct qla_hw_data *ha; |
| struct ctio_crc2_to_fw *pkt; |
| dma_addr_t crc_ctx_dma; |
| uint16_t fw_prot_opts = 0; |
| struct qla_tgt_cmd *cmd = prm->cmd; |
| struct se_cmd *se_cmd = &cmd->se_cmd; |
| uint32_t h; |
| struct atio_from_isp *atio = &prm->cmd->atio; |
| struct qla_tc_param tc; |
| uint16_t t16; |
| scsi_qla_host_t *vha = cmd->vha; |
| |
| ha = vha->hw; |
| |
| pkt = (struct ctio_crc2_to_fw *)qpair->req->ring_ptr; |
| prm->pkt = pkt; |
| memset(pkt, 0, sizeof(*pkt)); |
| |
| ql_dbg_qp(ql_dbg_tgt, cmd->qpair, 0xe071, |
| "qla_target(%d):%s: se_cmd[%p] CRC2 prot_op[0x%x] cmd prot sg:cnt[%p:%x] lba[%llu]\n", |
| cmd->vp_idx, __func__, se_cmd, se_cmd->prot_op, |
| prm->prot_sg, prm->prot_seg_cnt, se_cmd->t_task_lba); |
| |
| if ((se_cmd->prot_op == TARGET_PROT_DIN_INSERT) || |
| (se_cmd->prot_op == TARGET_PROT_DOUT_STRIP)) |
| bundling = 0; |
| |
| /* Compute dif len and adjust data len to incude protection */ |
| data_bytes = cmd->bufflen; |
| dif_bytes = (data_bytes / cmd->blk_sz) * 8; |
| |
| switch (se_cmd->prot_op) { |
| case TARGET_PROT_DIN_INSERT: |
| case TARGET_PROT_DOUT_STRIP: |
| transfer_length = data_bytes; |
| if (cmd->prot_sg_cnt) |
| data_bytes += dif_bytes; |
| break; |
| case TARGET_PROT_DIN_STRIP: |
| case TARGET_PROT_DOUT_INSERT: |
| case TARGET_PROT_DIN_PASS: |
| case TARGET_PROT_DOUT_PASS: |
| transfer_length = data_bytes + dif_bytes; |
| break; |
| default: |
| BUG(); |
| break; |
| } |
| |
| if (!qlt_hba_err_chk_enabled(se_cmd)) |
| fw_prot_opts |= 0x10; /* Disable Guard tag checking */ |
| /* HBA error checking enabled */ |
| else if (IS_PI_UNINIT_CAPABLE(ha)) { |
| if ((se_cmd->prot_type == TARGET_DIF_TYPE1_PROT) || |
| (se_cmd->prot_type == TARGET_DIF_TYPE2_PROT)) |
| fw_prot_opts |= PO_DIS_VALD_APP_ESC; |
| else if (se_cmd->prot_type == TARGET_DIF_TYPE3_PROT) |
| fw_prot_opts |= PO_DIS_VALD_APP_REF_ESC; |
| } |
| |
| switch (se_cmd->prot_op) { |
| case TARGET_PROT_DIN_INSERT: |
| case TARGET_PROT_DOUT_INSERT: |
| fw_prot_opts |= PO_MODE_DIF_INSERT; |
| break; |
| case TARGET_PROT_DIN_STRIP: |
| case TARGET_PROT_DOUT_STRIP: |
| fw_prot_opts |= PO_MODE_DIF_REMOVE; |
| break; |
| case TARGET_PROT_DIN_PASS: |
| case TARGET_PROT_DOUT_PASS: |
| fw_prot_opts |= PO_MODE_DIF_PASS; |
| /* FUTURE: does tcm require T10CRC<->IPCKSUM conversion? */ |
| break; |
| default:/* Normal Request */ |
| fw_prot_opts |= PO_MODE_DIF_PASS; |
| break; |
| } |
| |
| /* ---- PKT ---- */ |
| /* Update entry type to indicate Command Type CRC_2 IOCB */ |
| pkt->entry_type = CTIO_CRC2; |
| pkt->entry_count = 1; |
| pkt->vp_index = cmd->vp_idx; |
| |
| h = qlt_make_handle(qpair); |
| if (unlikely(h == QLA_TGT_NULL_HANDLE)) { |
| /* |
| * CTIO type 7 from the firmware doesn't provide a way to |
| * know the initiator's LOOP ID, hence we can't find |
| * the session and, so, the command. |
| */ |
| return -EAGAIN; |
| } else |
| qpair->req->outstanding_cmds[h] = (srb_t *)prm->cmd; |
| |
| pkt->handle = make_handle(qpair->req->id, h); |
| pkt->handle |= CTIO_COMPLETION_HANDLE_MARK; |
| pkt->nport_handle = cpu_to_le16(prm->cmd->loop_id); |
| pkt->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); |
| pkt->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); |
| pkt->exchange_addr = atio->u.isp24.exchange_addr; |
| |
| /* silence compile warning */ |
| t16 = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); |
| pkt->ox_id = cpu_to_le16(t16); |
| |
| t16 = (atio->u.isp24.attr << 9); |
| pkt->flags |= cpu_to_le16(t16); |
| pkt->relative_offset = cpu_to_le32(prm->cmd->offset); |
| |
| /* Set transfer direction */ |
| if (cmd->dma_data_direction == DMA_TO_DEVICE) |
| pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_IN); |
| else if (cmd->dma_data_direction == DMA_FROM_DEVICE) |
| pkt->flags = cpu_to_le16(CTIO7_FLAGS_DATA_OUT); |
| |
| pkt->dseg_count = cpu_to_le16(prm->tot_dsds); |
| /* Fibre channel byte count */ |
| pkt->transfer_length = cpu_to_le32(transfer_length); |
| |
| /* ----- CRC context -------- */ |
| |
| /* Allocate CRC context from global pool */ |
| crc_ctx_pkt = cmd->ctx = |
| dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma); |
| |
| if (!crc_ctx_pkt) |
| goto crc_queuing_error; |
| |
| crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma; |
| INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list); |
| |
| /* Set handle */ |
| crc_ctx_pkt->handle = pkt->handle; |
| |
| qla_tgt_set_dif_tags(cmd, crc_ctx_pkt, &fw_prot_opts); |
| |
| put_unaligned_le64(crc_ctx_dma, &pkt->crc_context_address); |
| pkt->crc_context_len = cpu_to_le16(CRC_CONTEXT_LEN_FW); |
| |
| if (!bundling) { |
| cur_dsd = &crc_ctx_pkt->u.nobundling.data_dsd[0]; |
| } else { |
| /* |
| * Configure Bundling if we need to fetch interlaving |
| * protection PCI accesses |
| */ |
| fw_prot_opts |= PO_ENABLE_DIF_BUNDLING; |
| crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes); |
| crc_ctx_pkt->u.bundling.dseg_count = |
| cpu_to_le16(prm->tot_dsds - prm->prot_seg_cnt); |
| cur_dsd = &crc_ctx_pkt->u.bundling.data_dsd[0]; |
| } |
| |
| /* Finish the common fields of CRC pkt */ |
| crc_ctx_pkt->blk_size = cpu_to_le16(cmd->blk_sz); |
| crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts); |
| crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes); |
| crc_ctx_pkt->guard_seed = cpu_to_le16(0); |
| |
| memset((uint8_t *)&tc, 0 , sizeof(tc)); |
| tc.vha = vha; |
| tc.blk_sz = cmd->blk_sz; |
| tc.bufflen = cmd->bufflen; |
| tc.sg = cmd->sg; |
| tc.prot_sg = cmd->prot_sg; |
| tc.ctx = crc_ctx_pkt; |
| tc.ctx_dsd_alloced = &cmd->ctx_dsd_alloced; |
| |
| /* Walks data segments */ |
| pkt->flags |= cpu_to_le16(CTIO7_FLAGS_DSD_PTR); |
| |
| if (!bundling && prm->prot_seg_cnt) { |
| if (qla24xx_walk_and_build_sglist_no_difb(ha, NULL, cur_dsd, |
| prm->tot_dsds, &tc)) |
| goto crc_queuing_error; |
| } else if (qla24xx_walk_and_build_sglist(ha, NULL, cur_dsd, |
| (prm->tot_dsds - prm->prot_seg_cnt), &tc)) |
| goto crc_queuing_error; |
| |
| if (bundling && prm->prot_seg_cnt) { |
| /* Walks dif segments */ |
| pkt->add_flags |= CTIO_CRC2_AF_DIF_DSD_ENA; |
| |
| cur_dsd = &crc_ctx_pkt->u.bundling.dif_dsd; |
| if (qla24xx_walk_and_build_prot_sglist(ha, NULL, cur_dsd, |
| prm->prot_seg_cnt, cmd)) |
| goto crc_queuing_error; |
| } |
| return QLA_SUCCESS; |
| |
| crc_queuing_error: |
| /* Cleanup will be performed by the caller */ |
| qpair->req->outstanding_cmds[h] = NULL; |
| |
| return QLA_FUNCTION_FAILED; |
| } |
| |
| /* |
| * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * |
| * QLA_TGT_XMIT_STATUS for >= 24xx silicon |
| */ |
| int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, |
| uint8_t scsi_status) |
| { |
| struct scsi_qla_host *vha = cmd->vha; |
| struct qla_qpair *qpair = cmd->qpair; |
| struct ctio7_to_24xx *pkt; |
| struct qla_tgt_prm prm; |
| uint32_t full_req_cnt = 0; |
| unsigned long flags = 0; |
| int res; |
| |
| if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || |
| (cmd->sess && cmd->sess->deleted)) { |
| cmd->state = QLA_TGT_STATE_PROCESSED; |
| return 0; |
| } |
| |
| ql_dbg_qp(ql_dbg_tgt, qpair, 0xe018, |
| "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d se_cmd[%p] qp %d\n", |
| (xmit_type & QLA_TGT_XMIT_STATUS) ? |
| 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction, |
| &cmd->se_cmd, qpair->id); |
| |
| res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, |
| &full_req_cnt); |
| if (unlikely(res != 0)) { |
| return res; |
| } |
| |
| spin_lock_irqsave(qpair->qp_lock_ptr, flags); |
| |
| if (xmit_type == QLA_TGT_XMIT_STATUS) |
| qpair->tgt_counters.core_qla_snd_status++; |
| else |
| qpair->tgt_counters.core_qla_que_buf++; |
| |
| if (!qpair->fw_started || cmd->reset_count != qpair->chip_reset) { |
| /* |
| * Either the port is not online or this request was from |
| * previous life, just abort the processing. |
| */ |
| cmd->state = QLA_TGT_STATE_PROCESSED; |
| ql_dbg_qp(ql_dbg_async, qpair, 0xe101, |
| "RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n", |
| vha->flags.online, qla2x00_reset_active(vha), |
| cmd->reset_count, qpair->chip_reset); |
| res = 0; |
| goto out_unmap_unlock; |
| } |
| |
| /* Does F/W have an IOCBs for this request */ |
| res = qlt_check_reserve_free_req(qpair, full_req_cnt); |
| if (unlikely(res)) |
| goto out_unmap_unlock; |
| |
| if (cmd->se_cmd.prot_op && (xmit_type & QLA_TGT_XMIT_DATA)) |
| res = qlt_build_ctio_crc2_pkt(qpair, &prm); |
| else |
| res = qlt_24xx_build_ctio_pkt(qpair, &prm); |
| if (unlikely(res != 0)) { |
| qpair->req->cnt += full_req_cnt; |
| goto out_unmap_unlock; |
| } |
| |
| pkt = (struct ctio7_to_24xx *)prm.pkt; |
| |
| if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { |
| pkt->u.status0.flags |= |
| cpu_to_le16(CTIO7_FLAGS_DATA_IN | |
| CTIO7_FLAGS_STATUS_MODE_0); |
| |
| if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) |
| qlt_load_data_segments(&prm); |
| |
| if (prm.add_status_pkt == 0) { |
| if (xmit_type & QLA_TGT_XMIT_STATUS) { |
| pkt->u.status0.scsi_status = |
| cpu_to_le16(prm.rq_result); |
| if (!cmd->edif) |
| pkt->u.status0.residual = |
| cpu_to_le32(prm.residual); |
| |
| pkt->u.status0.flags |= cpu_to_le16( |
| CTIO7_FLAGS_SEND_STATUS); |
| if (qlt_need_explicit_conf(cmd, 0)) { |
| pkt->u.status0.flags |= |
| cpu_to_le16( |
| CTIO7_FLAGS_EXPLICIT_CONFORM | |
| CTIO7_FLAGS_CONFORM_REQ); |
| } |
| } |
| |
| } else { |
| /* |
| * We have already made sure that there is sufficient |
| * amount of request entries to not drop HW lock in |
| * req_pkt(). |
| */ |
| struct ctio7_to_24xx *ctio = |
| (struct ctio7_to_24xx *)qlt_get_req_pkt( |
| qpair->req); |
| |
| ql_dbg_qp(ql_dbg_tgt, qpair, 0x305e, |
| "Building additional status packet 0x%p.\n", |
| ctio); |
| |
| /* |
| * T10Dif: ctio_crc2_to_fw overlay ontop of |
| * ctio7_to_24xx |
| */ |
| memcpy(ctio, pkt, sizeof(*ctio)); |
| /* reset back to CTIO7 */ |
| ctio->entry_count = 1; |
| ctio->entry_type = CTIO_TYPE7; |
| ctio->dseg_count = 0; |
| ctio->u.status1.flags &= ~cpu_to_le16( |
| CTIO7_FLAGS_DATA_IN); |
| |
| /* Real finish is ctio_m1's finish */ |
| pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; |
| pkt->u.status0.flags |= cpu_to_le16( |
| CTIO7_FLAGS_DONT_RET_CTIO); |
| |
| /* qlt_24xx_init_ctio_to_isp will correct |
| * all neccessary fields that's part of CTIO7. |
| * There should be no residual of CTIO-CRC2 data. |
| */ |
| qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, |
| &prm); |
| } |
| } else |
| qlt_24xx_init_ctio_to_isp(pkt, &prm); |
| |
| |
| cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ |
| cmd->cmd_sent_to_fw = 1; |
| cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); |
| |
| /* Memory Barrier */ |
| wmb(); |
| if (qpair->reqq_start_iocbs) |
| qpair->reqq_start_iocbs(qpair); |
| else |
| qla2x00_start_iocbs(vha, qpair->req); |
| spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); |
| |
| return 0; |
| |
| out_unmap_unlock: |
| qlt_unmap_sg(vha, cmd); |
| spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); |
| |
| return res; |
| } |
| EXPORT_SYMBOL(qlt_xmit_response); |
| |
| int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) |
| { |
| struct ctio7_to_24xx *pkt; |
| struct scsi_qla_host *vha = cmd->vha; |
| struct qla_tgt *tgt = cmd->tgt; |
| struct qla_tgt_prm prm; |
| unsigned long flags = 0; |
| int res = 0; |
| struct qla_qpair *qpair = cmd->qpair; |
| |
| memset(&prm, 0, sizeof(prm)); |
| prm.cmd = cmd; |
| prm.tgt = tgt; |
| prm.sg = NULL; |
| prm.req_cnt = 1; |
| |
| if (!qpair->fw_started || (cmd->reset_count != qpair->chip_reset) || |
| (cmd->sess && cmd->sess->deleted)) { |
| /* |
| * Either the port is not online or this request was from |
| * previous life, just abort the processing. |
| */ |
| cmd->aborted = 1; |
| cmd->write_data_transferred = 0; |
| cmd->state = QLA_TGT_STATE_DATA_IN; |
| vha->hw->tgt.tgt_ops->handle_data(cmd); |
| ql_dbg_qp(ql_dbg_async, qpair, 0xe102, |
| "RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n", |
| vha->flags.online, qla2x00_reset_active(vha), |
| cmd->reset_count, qpair->chip_reset); |
| return 0; |
| } |
| |
| /* Calculate number of entries and segments required */ |
| if (qlt_pci_map_calc_cnt(&prm) != 0) |
| return -EAGAIN; |
| |
| spin_lock_irqsave(qpair->qp_lock_ptr, flags); |
| /* Does F/W have an IOCBs for this request */ |
| res = qlt_check_reserve_free_req(qpair, prm.req_cnt); |
| if (res != 0) |
| goto out_unlock_free_unmap; |
| if (cmd->se_cmd.prot_op) |
| res = qlt_build_ctio_crc2_pkt(qpair, &prm); |
| else |
| res = qlt_24xx_build_ctio_pkt(qpair, &prm); |
| |
| if (unlikely(res != 0)) { |
| qpair->req->cnt += prm.req_cnt; |
| goto out_unlock_free_unmap; |
| } |
| |
| pkt = (struct ctio7_to_24xx *)prm.pkt; |
| pkt->u.status0.flags |= cpu_to_le16(CTIO7_FLAGS_DATA_OUT | |
| CTIO7_FLAGS_STATUS_MODE_0); |
| |
| if (cmd->se_cmd.prot_op == TARGET_PROT_NORMAL) |
| qlt_load_data_segments(&prm); |
| |
| cmd->state = QLA_TGT_STATE_NEED_DATA; |
| cmd->cmd_sent_to_fw = 1; |
| cmd->ctio_flags = le16_to_cpu(pkt->u.status0.flags); |
| |
| /* Memory Barrier */ |
| wmb(); |
| if (qpair->reqq_start_iocbs) |
| qpair->reqq_start_iocbs(qpair); |
| else |
| qla2x00_start_iocbs(vha, qpair->req); |
| spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); |
| |
| return res; |
| |
| out_unlock_free_unmap: |
| qlt_unmap_sg(vha, cmd); |
| spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); |
| |
| return res; |
| } |
| EXPORT_SYMBOL(qlt_rdy_to_xfer); |
| |
| |
| /* |
| * it is assumed either hardware_lock or qpair lock is held. |
| */ |
| static void |
| qlt_handle_dif_error(struct qla_qpair *qpair, struct qla_tgt_cmd *cmd, |
| struct ctio_crc_from_fw *sts) |
| { |
| uint8_t *ap = &sts->actual_dif[0]; |
| uint8_t *ep = &sts->expected_dif[0]; |
| uint64_t lba = cmd->se_cmd.t_task_lba; |
| uint8_t scsi_status, sense_key, asc, ascq; |
| unsigned long flags; |
| struct scsi_qla_host *vha = cmd->vha; |
| |
| cmd->trc_flags |= TRC_DIF_ERR; |
| |
| cmd->a_guard = get_unaligned_be16(ap + 0); |
| cmd->a_app_tag = get_unaligned_be16(ap + 2); |
| cmd->a_ref_tag = get_unaligned_be32(ap + 4); |
| |
| cmd->e_guard = get_unaligned_be16(ep + 0); |
| cmd->e_app_tag = get_unaligned_be16(ep + 2); |
| cmd->e_ref_tag = get_unaligned_be32(ep + 4); |
| |
| ql_dbg(ql_dbg_tgt_dif, vha, 0xf075, |
| "%s: aborted %d state %d\n", __func__, cmd->aborted, cmd->state); |
| |
| scsi_status = sense_key = asc = ascq = 0; |
| |
| /* check appl tag */ |
| if (cmd->e_app_tag != cmd->a_app_tag) { |
| ql_dbg(ql_dbg_tgt_dif, vha, 0xe00d, |
| "App Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", |
| cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, |
| cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, |
| cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, |
| cmd->atio.u.isp24.fcp_hdr.ox_id); |
| |
| cmd->dif_err_code = DIF_ERR_APP; |
| scsi_status = SAM_STAT_CHECK_CONDITION; |
| sense_key = ABORTED_COMMAND; |
| asc = 0x10; |
| ascq = 0x2; |
| } |
| |
| /* check ref tag */ |
| if (cmd->e_ref_tag != cmd->a_ref_tag) { |
| ql_dbg(ql_dbg_tgt_dif, vha, 0xe00e, |
| "Ref Tag ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard[%x|%x] cmd=%p ox_id[%04x] ", |
| cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, |
| cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, |
| cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, |
| cmd->atio.u.isp24.fcp_hdr.ox_id); |
| |
| cmd->dif_err_code = DIF_ERR_REF; |
| scsi_status = SAM_STAT_CHECK_CONDITION; |
| sense_key = ABORTED_COMMAND; |
| asc = 0x10; |
| ascq = 0x3; |
| goto out; |
| } |
| |
| /* check guard */ |
| if (cmd->e_guard != cmd->a_guard) { |
| ql_dbg(ql_dbg_tgt_dif, vha, 0xe012, |
| "Guard ERR: cdb[%x] lba[%llx %llx] blks[%x] [Actual|Expected] Ref[%x|%x], App[%x|%x], Guard [%x|%x] cmd=%p ox_id[%04x]", |
| cmd->cdb[0], lba, (lba+cmd->num_blks), cmd->num_blks, |
| cmd->a_ref_tag, cmd->e_ref_tag, cmd->a_app_tag, |
| cmd->e_app_tag, cmd->a_guard, cmd->e_guard, cmd, |
| cmd->atio.u.isp24.fcp_hdr.ox_id); |
| |
| cmd->dif_err_code = DIF_ERR_GRD; |
| scsi_status = SAM_STAT_CHECK_CONDITION; |
| sense_key = ABORTED_COMMAND; |
| asc = 0x10; |
| ascq = 0x1; |
| } |
| out: |
| switch (cmd->state) { |
| case QLA_TGT_STATE_NEED_DATA: |
| /* handle_data will load DIF error code */ |
| cmd->state = QLA_TGT_STATE_DATA_IN; |
| vha->hw->tgt.tgt_ops->handle_data(cmd); |
| break; |
| default: |
| spin_lock_irqsave(&cmd->cmd_lock, flags); |
| if (cmd->aborted) { |
| spin_unlock_irqrestore(&cmd->cmd_lock, flags); |
| vha->hw->tgt.tgt_ops->free_cmd(cmd); |
| break; |
| } |
| spin_unlock_irqrestore(&cmd->cmd_lock, flags); |
| |
| qlt_send_resp_ctio(qpair, cmd, scsi_status, sense_key, asc, |
| ascq); |
| /* assume scsi status gets out on the wire. |
| * Will not wait for completion. |
| */ |
| vha->hw->tgt.tgt_ops->free_cmd(cmd); |
| break; |
| } |
| } |
| |
| /* If hardware_lock held on entry, might drop it, then reaquire */ |
| /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ |
| static int __qlt_send_term_imm_notif(struct scsi_qla_host *vha, |
| struct imm_ntfy_from_isp *ntfy) |
| { |
| struct nack_to_isp *nack; |
| struct qla_hw_data *ha = vha->hw; |
| request_t *pkt; |
| int ret = 0; |
| |
| ql_dbg(ql_dbg_tgt_tmr, vha, 0xe01c, |
| "Sending TERM ELS CTIO (ha=%p)\n", ha); |
| |
| pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); |
| if (pkt == NULL) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe080, |
| "qla_target(%d): %s failed: unable to allocate " |
| "request packet\n", vha->vp_idx, __func__); |
| return -ENOMEM; |
| } |
| |
| pkt->entry_type = NOTIFY_ACK_TYPE; |
| pkt->entry_count = 1; |
| pkt->handle = QLA_TGT_SKIP_HANDLE; |
| |
| nack = (struct nack_to_isp *)pkt; |
| nack->ox_id = ntfy->ox_id; |
| |
| nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; |
| if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { |
| nack->u.isp24.flags = ntfy->u.isp24.flags & |
| cpu_to_le16(NOTIFY24XX_FLAGS_PUREX_IOCB); |
| } |
| |
| /* terminate */ |
| nack->u.isp24.flags |= |
| __constant_cpu_to_le16(NOTIFY_ACK_FLAGS_TERMINATE); |
| |
| nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; |
| nack->u.isp24.status = ntfy->u.isp24.status; |
| nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; |
| nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle; |
| nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; |
| nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; |
| nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; |
| nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; |
| |
| qla2x00_start_iocbs(vha, vha->req); |
| return ret; |
| } |
| |
| static void qlt_send_term_imm_notif(struct scsi_qla_host *vha, |
| struct imm_ntfy_from_isp *imm, int ha_locked) |
| { |
| int rc; |
| |
| WARN_ON_ONCE(!ha_locked); |
| rc = __qlt_send_term_imm_notif(vha, imm); |
| pr_debug("rc = %d\n", rc); |
| } |
| |
| /* |
| * If hardware_lock held on entry, might drop it, then reaquire |
| * This function sends the appropriate CTIO to ISP 2xxx or 24xx |
| */ |
| static int __qlt_send_term_exchange(struct qla_qpair *qpair, |
| struct qla_tgt_cmd *cmd, |
| struct atio_from_isp *atio) |
| { |
| struct scsi_qla_host *vha = qpair->vha; |
| struct ctio7_to_24xx *ctio24; |
| struct qla_hw_data *ha = vha->hw; |
| request_t *pkt; |
| int ret = 0; |
| uint16_t temp; |
| |
| ql_dbg(ql_dbg_tgt, vha, 0xe009, "Sending TERM EXCH CTIO (ha=%p)\n", ha); |
| |
| if (cmd) |
| vha = cmd->vha; |
| |
| pkt = (request_t *)qla2x00_alloc_iocbs_ready(qpair, NULL); |
| if (pkt == NULL) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe050, |
| "qla_target(%d): %s failed: unable to allocate " |
| "request packet\n", vha->vp_idx, __func__); |
| return -ENOMEM; |
| } |
| |
| if (cmd != NULL) { |
| if (cmd->state < QLA_TGT_STATE_PROCESSED) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe051, |
| "qla_target(%d): Terminating cmd %p with " |
| "incorrect state %d\n", vha->vp_idx, cmd, |
| cmd->state); |
| } else |
| ret = 1; |
| } |
| |
| qpair->tgt_counters.num_term_xchg_sent++; |
| pkt->entry_count = 1; |
| pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; |
| |
| ctio24 = (struct ctio7_to_24xx *)pkt; |
| ctio24->entry_type = CTIO_TYPE7; |
| ctio24->nport_handle = cpu_to_le16(CTIO7_NHANDLE_UNRECOGNIZED); |
| ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); |
| ctio24->vp_index = vha->vp_idx; |
| ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); |
| ctio24->exchange_addr = atio->u.isp24.exchange_addr; |
| temp = (atio->u.isp24.attr << 9) | CTIO7_FLAGS_STATUS_MODE_1 | |
| CTIO7_FLAGS_TERMINATE; |
| ctio24->u.status1.flags = cpu_to_le16(temp); |
| temp = be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id); |
| ctio24->u.status1.ox_id = cpu_to_le16(temp); |
| |
| /* Memory Barrier */ |
| wmb(); |
| if (qpair->reqq_start_iocbs) |
| qpair->reqq_start_iocbs(qpair); |
| else |
| qla2x00_start_iocbs(vha, qpair->req); |
| return ret; |
| } |
| |
| static void qlt_send_term_exchange(struct qla_qpair *qpair, |
| struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked, |
| int ul_abort) |
| { |
| struct scsi_qla_host *vha; |
| unsigned long flags = 0; |
| int rc; |
| |
| /* why use different vha? NPIV */ |
| if (cmd) |
| vha = cmd->vha; |
| else |
| vha = qpair->vha; |
| |
| if (ha_locked) { |
| rc = __qlt_send_term_exchange(qpair, cmd, atio); |
| if (rc == -ENOMEM) |
| qlt_alloc_qfull_cmd(vha, atio, 0, 0); |
| goto done; |
| } |
| spin_lock_irqsave(qpair->qp_lock_ptr, flags); |
| rc = __qlt_send_term_exchange(qpair, cmd, atio); |
| if (rc == -ENOMEM) |
| qlt_alloc_qfull_cmd(vha, atio, 0, 0); |
| |
| done: |
| if (cmd && !ul_abort && !cmd->aborted) { |
| if (cmd->sg_mapped) |
| qlt_unmap_sg(vha, cmd); |
| vha->hw->tgt.tgt_ops->free_cmd(cmd); |
| } |
| |
| if (!ha_locked) |
| spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); |
| |
| return; |
| } |
| |
| static void qlt_init_term_exchange(struct scsi_qla_host *vha) |
| { |
| struct list_head free_list; |
| struct qla_tgt_cmd *cmd, *tcmd; |
| |
| vha->hw->tgt.leak_exchg_thresh_hold = |
| (vha->hw->cur_fw_xcb_count/100) * LEAK_EXCHG_THRESH_HOLD_PERCENT; |
| |
| cmd = tcmd = NULL; |
| if (!list_empty(&vha->hw->tgt.q_full_list)) { |
| INIT_LIST_HEAD(&free_list); |
| list_splice_init(&vha->hw->tgt.q_full_list, &free_list); |
| |
| list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { |
| list_del(&cmd->cmd_list); |
| /* This cmd was never sent to TCM. There is no need |
| * to schedule free or call free_cmd |
| */ |
| qlt_free_cmd(cmd); |
| vha->hw->tgt.num_qfull_cmds_alloc--; |
| } |
| } |
| vha->hw->tgt.num_qfull_cmds_dropped = 0; |
| } |
| |
| static void qlt_chk_exch_leak_thresh_hold(struct scsi_qla_host *vha) |
| { |
| uint32_t total_leaked; |
| |
| total_leaked = vha->hw->tgt.num_qfull_cmds_dropped; |
| |
| if (vha->hw->tgt.leak_exchg_thresh_hold && |
| (total_leaked > vha->hw->tgt.leak_exchg_thresh_hold)) { |
| |
| ql_dbg(ql_dbg_tgt, vha, 0xe079, |
| "Chip reset due to exchange starvation: %d/%d.\n", |
| total_leaked, vha->hw->cur_fw_xcb_count); |
| |
| 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); |
| } |
| |
| } |
| |
| int qlt_abort_cmd(struct qla_tgt_cmd *cmd) |
| { |
| struct qla_tgt *tgt = cmd->tgt; |
| struct scsi_qla_host *vha = tgt->vha; |
| struct se_cmd *se_cmd = &cmd->se_cmd; |
| unsigned long flags; |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, |
| "qla_target(%d): terminating exchange for aborted cmd=%p " |
| "(se_cmd=%p, tag=%llu)", vha->vp_idx, cmd, &cmd->se_cmd, |
| se_cmd->tag); |
| |
| spin_lock_irqsave(&cmd->cmd_lock, flags); |
| if (cmd->aborted) { |
| if (cmd->sg_mapped) |
| qlt_unmap_sg(vha, cmd); |
| |
| spin_unlock_irqrestore(&cmd->cmd_lock, flags); |
| /* |
| * It's normal to see 2 calls in this path: |
| * 1) XFER Rdy completion + CMD_T_ABORT |
| * 2) TCM TMR - drain_state_list |
| */ |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf016, |
| "multiple abort. %p transport_state %x, t_state %x, " |
| "se_cmd_flags %x\n", cmd, cmd->se_cmd.transport_state, |
| cmd->se_cmd.t_state, cmd->se_cmd.se_cmd_flags); |
| return -EIO; |
| } |
| cmd->aborted = 1; |
| cmd->trc_flags |= TRC_ABORT; |
| spin_unlock_irqrestore(&cmd->cmd_lock, flags); |
| |
| qlt_send_term_exchange(cmd->qpair, cmd, &cmd->atio, 0, 1); |
| return 0; |
| } |
| EXPORT_SYMBOL(qlt_abort_cmd); |
| |
| void qlt_free_cmd(struct qla_tgt_cmd *cmd) |
| { |
| struct fc_port *sess = cmd->sess; |
| |
| ql_dbg(ql_dbg_tgt, cmd->vha, 0xe074, |
| "%s: se_cmd[%p] ox_id %04x\n", |
| __func__, &cmd->se_cmd, |
| be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); |
| |
| BUG_ON(cmd->cmd_in_wq); |
| |
| if (!cmd->q_full) |
| qlt_decr_num_pend_cmds(cmd->vha); |
| |
| BUG_ON(cmd->sg_mapped); |
| cmd->jiffies_at_free = get_jiffies_64(); |
| |
| if (!sess || !sess->se_sess) { |
| WARN_ON(1); |
| return; |
| } |
| cmd->jiffies_at_free = get_jiffies_64(); |
| cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); |
| } |
| EXPORT_SYMBOL(qlt_free_cmd); |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| */ |
| static int qlt_term_ctio_exchange(struct qla_qpair *qpair, void *ctio, |
| struct qla_tgt_cmd *cmd, uint32_t status) |
| { |
| int term = 0; |
| struct scsi_qla_host *vha = qpair->vha; |
| |
| if (cmd->se_cmd.prot_op) |
| ql_dbg(ql_dbg_tgt_dif, vha, 0xe013, |
| "Term DIF cmd: lba[0x%llx|%lld] len[0x%x] " |
| "se_cmd=%p tag[%x] op %#x/%s", |
| cmd->lba, cmd->lba, |
| cmd->num_blks, &cmd->se_cmd, |
| cmd->atio.u.isp24.exchange_addr, |
| cmd->se_cmd.prot_op, |
| prot_op_str(cmd->se_cmd.prot_op)); |
| |
| if (ctio != NULL) { |
| struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; |
| |
| term = !(c->flags & |
| cpu_to_le16(OF_TERM_EXCH)); |
| } else |
| term = 1; |
| |
| if (term) |
| qlt_send_term_exchange(qpair, cmd, &cmd->atio, 1, 0); |
| |
| return term; |
| } |
| |
| |
| /* ha->hardware_lock supposed to be held on entry */ |
| static void *qlt_ctio_to_cmd(struct scsi_qla_host *vha, |
| struct rsp_que *rsp, uint32_t handle, void *ctio) |
| { |
| void *cmd = NULL; |
| struct req_que *req; |
| int qid = GET_QID(handle); |
| uint32_t h = handle & ~QLA_TGT_HANDLE_MASK; |
| |
| if (unlikely(h == QLA_TGT_SKIP_HANDLE)) |
| return NULL; |
| |
| if (qid == rsp->req->id) { |
| req = rsp->req; |
| } else if (vha->hw->req_q_map[qid]) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0x1000a, |
| "qla_target(%d): CTIO completion with different QID %d handle %x\n", |
| vha->vp_idx, rsp->id, handle); |
| req = vha->hw->req_q_map[qid]; |
| } else { |
| return NULL; |
| } |
| |
| h &= QLA_CMD_HANDLE_MASK; |
| |
| if (h != QLA_TGT_NULL_HANDLE) { |
| if (unlikely(h >= req->num_outstanding_cmds)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe052, |
| "qla_target(%d): Wrong handle %x received\n", |
| vha->vp_idx, handle); |
| return NULL; |
| } |
| |
| cmd = req->outstanding_cmds[h]; |
| if (unlikely(cmd == NULL)) { |
| ql_dbg(ql_dbg_async, vha, 0xe053, |
| "qla_target(%d): Suspicious: unable to find the command with handle %x req->id %d rsp->id %d\n", |
| vha->vp_idx, handle, req->id, rsp->id); |
| return NULL; |
| } |
| req->outstanding_cmds[h] = NULL; |
| } else if (ctio != NULL) { |
| /* We can't get loop ID from CTIO7 */ |
| ql_dbg(ql_dbg_tgt, vha, 0xe054, |
| "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " |
| "support NULL handles\n", vha->vp_idx); |
| return NULL; |
| } |
| |
| return cmd; |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| */ |
| static void qlt_do_ctio_completion(struct scsi_qla_host *vha, |
| struct rsp_que *rsp, uint32_t handle, uint32_t status, void *ctio) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct se_cmd *se_cmd; |
| struct qla_tgt_cmd *cmd; |
| struct qla_qpair *qpair = rsp->qpair; |
| |
| if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { |
| /* That could happen only in case of an error/reset/abort */ |
| if (status != CTIO_SUCCESS) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, |
| "Intermediate CTIO received" |
| " (status %x)\n", status); |
| } |
| return; |
| } |
| |
| cmd = qlt_ctio_to_cmd(vha, rsp, handle, ctio); |
| if (cmd == NULL) |
| return; |
| |
| if ((le16_to_cpu(((struct ctio7_from_24xx *)ctio)->flags) & CTIO7_FLAGS_DATA_OUT) && |
| cmd->sess) { |
| qlt_chk_edif_rx_sa_delete_pending(vha, cmd->sess, |
| (struct ctio7_from_24xx *)ctio); |
| } |
| |
| se_cmd = &cmd->se_cmd; |
| cmd->cmd_sent_to_fw = 0; |
| |
| qlt_unmap_sg(vha, cmd); |
| |
| if (unlikely(status != CTIO_SUCCESS)) { |
| switch (status & 0xFFFF) { |
| case CTIO_INVALID_RX_ID: |
| if (printk_ratelimit()) |
| dev_info(&vha->hw->pdev->dev, |
| "qla_target(%d): CTIO with INVALID_RX_ID ATIO attr %x CTIO Flags %x|%x\n", |
| vha->vp_idx, cmd->atio.u.isp24.attr, |
| ((cmd->ctio_flags >> 9) & 0xf), |
| cmd->ctio_flags); |
| |
| break; |
| case CTIO_LIP_RESET: |
| case CTIO_TARGET_RESET: |
| case CTIO_ABORTED: |
| /* driver request abort via Terminate exchange */ |
| case CTIO_TIMEOUT: |
| /* They are OK */ |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, |
| "qla_target(%d): CTIO with " |
| "status %#x received, state %x, se_cmd %p, " |
| "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " |
| "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, |
| status, cmd->state, se_cmd); |
| break; |
| |
| case CTIO_PORT_LOGGED_OUT: |
| case CTIO_PORT_UNAVAILABLE: |
| { |
| int logged_out = |
| (status & 0xFFFF) == CTIO_PORT_LOGGED_OUT; |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, |
| "qla_target(%d): CTIO with %s status %x " |
| "received (state %x, se_cmd %p)\n", vha->vp_idx, |
| logged_out ? "PORT LOGGED OUT" : "PORT UNAVAILABLE", |
| status, cmd->state, se_cmd); |
| |
| if (logged_out && cmd->sess) { |
| /* |
| * Session is already logged out, but we need |
| * to notify initiator, who's not aware of this |
| */ |
| cmd->sess->send_els_logo = 1; |
| ql_dbg(ql_dbg_disc, vha, 0x20f8, |
| "%s %d %8phC post del sess\n", |
| __func__, __LINE__, cmd->sess->port_name); |
| |
| qlt_schedule_sess_for_deletion(cmd->sess); |
| } |
| break; |
| } |
| case CTIO_DIF_ERROR: { |
| struct ctio_crc_from_fw *crc = |
| (struct ctio_crc_from_fw *)ctio; |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf073, |
| "qla_target(%d): CTIO with DIF_ERROR status %x " |
| "received (state %x, ulp_cmd %p) actual_dif[0x%llx] " |
| "expect_dif[0x%llx]\n", |
| vha->vp_idx, status, cmd->state, se_cmd, |
| *((u64 *)&crc->actual_dif[0]), |
| *((u64 *)&crc->expected_dif[0])); |
| |
| qlt_handle_dif_error(qpair, cmd, ctio); |
| return; |
| } |
| |
| case CTIO_FAST_AUTH_ERR: |
| case CTIO_FAST_INCOMP_PAD_LEN: |
| case CTIO_FAST_INVALID_REQ: |
| case CTIO_FAST_SPI_ERR: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, |
| "qla_target(%d): CTIO with EDIF error status 0x%x received (state %x, se_cmd %p\n", |
| vha->vp_idx, status, cmd->state, se_cmd); |
| break; |
| |
| default: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, |
| "qla_target(%d): CTIO with error status 0x%x received (state %x, se_cmd %p\n", |
| vha->vp_idx, status, cmd->state, se_cmd); |
| break; |
| } |
| |
| |
| /* "cmd->aborted" means |
| * cmd is already aborted/terminated, we don't |
| * need to terminate again. The exchange is already |
| * cleaned up/freed at FW level. Just cleanup at driver |
| * level. |
| */ |
| if ((cmd->state != QLA_TGT_STATE_NEED_DATA) && |
| (!cmd->aborted)) { |
| cmd->trc_flags |= TRC_CTIO_ERR; |
| if (qlt_term_ctio_exchange(qpair, ctio, cmd, status)) |
| return; |
| } |
| } |
| |
| if (cmd->state == QLA_TGT_STATE_PROCESSED) { |
| cmd->trc_flags |= TRC_CTIO_DONE; |
| } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { |
| cmd->state = QLA_TGT_STATE_DATA_IN; |
| |
| if (status == CTIO_SUCCESS) |
| cmd->write_data_transferred = 1; |
| |
| ha->tgt.tgt_ops->handle_data(cmd); |
| return; |
| } else if (cmd->aborted) { |
| cmd->trc_flags |= TRC_CTIO_ABORTED; |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, |
| "Aborted command %p (tag %lld) finished\n", cmd, se_cmd->tag); |
| } else { |
| cmd->trc_flags |= TRC_CTIO_STRANGE; |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, |
| "qla_target(%d): A command in state (%d) should " |
| "not return a CTIO complete\n", vha->vp_idx, cmd->state); |
| } |
| |
| if (unlikely(status != CTIO_SUCCESS) && |
| !cmd->aborted) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); |
| dump_stack(); |
| } |
| |
| ha->tgt.tgt_ops->free_cmd(cmd); |
| } |
| |
| static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, |
| uint8_t task_codes) |
| { |
| int fcp_task_attr; |
| |
| switch (task_codes) { |
| case ATIO_SIMPLE_QUEUE: |
| fcp_task_attr = TCM_SIMPLE_TAG; |
| break; |
| case ATIO_HEAD_OF_QUEUE: |
| fcp_task_attr = TCM_HEAD_TAG; |
| break; |
| case ATIO_ORDERED_QUEUE: |
| fcp_task_attr = TCM_ORDERED_TAG; |
| break; |
| case ATIO_ACA_QUEUE: |
| fcp_task_attr = TCM_ACA_TAG; |
| break; |
| case ATIO_UNTAGGED: |
| fcp_task_attr = TCM_SIMPLE_TAG; |
| break; |
| default: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, |
| "qla_target: unknown task code %x, use ORDERED instead\n", |
| task_codes); |
| fcp_task_attr = TCM_ORDERED_TAG; |
| break; |
| } |
| |
| return fcp_task_attr; |
| } |
| |
| /* |
| * Process context for I/O path into tcm_qla2xxx code |
| */ |
| static void __qlt_do_work(struct qla_tgt_cmd *cmd) |
| { |
| scsi_qla_host_t *vha = cmd->vha; |
| struct qla_hw_data *ha = vha->hw; |
| struct fc_port *sess = cmd->sess; |
| struct atio_from_isp *atio = &cmd->atio; |
| unsigned char *cdb; |
| unsigned long flags; |
| uint32_t data_length; |
| int ret, fcp_task_attr, data_dir, bidi = 0; |
| struct qla_qpair *qpair = cmd->qpair; |
| |
| cmd->cmd_in_wq = 0; |
| cmd->trc_flags |= TRC_DO_WORK; |
| |
| if (cmd->aborted) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf082, |
| "cmd with tag %u is aborted\n", |
| cmd->atio.u.isp24.exchange_addr); |
| goto out_term; |
| } |
| |
| spin_lock_init(&cmd->cmd_lock); |
| cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; |
| cmd->se_cmd.tag = le32_to_cpu(atio->u.isp24.exchange_addr); |
| |
| if (atio->u.isp24.fcp_cmnd.rddata && |
| atio->u.isp24.fcp_cmnd.wrdata) { |
| bidi = 1; |
| data_dir = DMA_TO_DEVICE; |
| } else if (atio->u.isp24.fcp_cmnd.rddata) |
| data_dir = DMA_FROM_DEVICE; |
| else if (atio->u.isp24.fcp_cmnd.wrdata) |
| data_dir = DMA_TO_DEVICE; |
| else |
| data_dir = DMA_NONE; |
| |
| fcp_task_attr = qlt_get_fcp_task_attr(vha, |
| atio->u.isp24.fcp_cmnd.task_attr); |
| data_length = get_datalen_for_atio(atio); |
| |
| ret = ha->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, |
| fcp_task_attr, data_dir, bidi); |
| if (ret != 0) |
| goto out_term; |
| /* |
| * Drop extra session reference from qlt_handle_cmd_for_atio(). |
| */ |
| ha->tgt.tgt_ops->put_sess(sess); |
| return; |
| |
| out_term: |
| ql_dbg(ql_dbg_io, vha, 0x3060, "Terminating work cmd %p", cmd); |
| /* |
| * cmd has not sent to target yet, so pass NULL as the second |
| * argument to qlt_send_term_exchange() and free the memory here. |
| */ |
| cmd->trc_flags |= TRC_DO_WORK_ERR; |
| spin_lock_irqsave(qpair->qp_lock_ptr, flags); |
| qlt_send_term_exchange(qpair, NULL, &cmd->atio, 1, 0); |
| |
| qlt_decr_num_pend_cmds(vha); |
| cmd->vha->hw->tgt.tgt_ops->rel_cmd(cmd); |
| spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); |
| |
| ha->tgt.tgt_ops->put_sess(sess); |
| } |
| |
| static void qlt_do_work(struct work_struct *work) |
| { |
| struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); |
| scsi_qla_host_t *vha = cmd->vha; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&vha->cmd_list_lock, flags); |
| list_del(&cmd->cmd_list); |
| spin_unlock_irqrestore(&vha->cmd_list_lock, flags); |
| |
| __qlt_do_work(cmd); |
| } |
| |
| void qlt_clr_qp_table(struct scsi_qla_host *vha) |
| { |
| unsigned long flags; |
| struct qla_hw_data *ha = vha->hw; |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| void *node; |
| u64 key = 0; |
| |
| ql_log(ql_log_info, vha, 0x706c, |
| "User update Number of Active Qpairs %d\n", |
| ha->tgt.num_act_qpairs); |
| |
| spin_lock_irqsave(&ha->tgt.atio_lock, flags); |
| |
| btree_for_each_safe64(&tgt->lun_qpair_map, key, node) |
| btree_remove64(&tgt->lun_qpair_map, key); |
| |
| ha->base_qpair->lun_cnt = 0; |
| for (key = 0; key < ha->max_qpairs; key++) |
| if (ha->queue_pair_map[key]) |
| ha->queue_pair_map[key]->lun_cnt = 0; |
| |
| spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); |
| } |
| |
| static void qlt_assign_qpair(struct scsi_qla_host *vha, |
| struct qla_tgt_cmd *cmd) |
| { |
| struct qla_qpair *qpair, *qp; |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| struct qla_qpair_hint *h; |
| |
| if (vha->flags.qpairs_available) { |
| h = btree_lookup64(&tgt->lun_qpair_map, cmd->unpacked_lun); |
| if (unlikely(!h)) { |
| /* spread lun to qpair ratio evently */ |
| int lcnt = 0, rc; |
| struct scsi_qla_host *base_vha = |
| pci_get_drvdata(vha->hw->pdev); |
| |
| qpair = vha->hw->base_qpair; |
| if (qpair->lun_cnt == 0) { |
| qpair->lun_cnt++; |
| h = qla_qpair_to_hint(tgt, qpair); |
| BUG_ON(!h); |
| rc = btree_insert64(&tgt->lun_qpair_map, |
| cmd->unpacked_lun, h, GFP_ATOMIC); |
| if (rc) { |
| qpair->lun_cnt--; |
| ql_log(ql_log_info, vha, 0xd037, |
| "Unable to insert lun %llx into lun_qpair_map\n", |
| cmd->unpacked_lun); |
| } |
| goto out; |
| } else { |
| lcnt = qpair->lun_cnt; |
| } |
| |
| h = NULL; |
| list_for_each_entry(qp, &base_vha->qp_list, |
| qp_list_elem) { |
| if (qp->lun_cnt == 0) { |
| qp->lun_cnt++; |
| h = qla_qpair_to_hint(tgt, qp); |
| BUG_ON(!h); |
| rc = btree_insert64(&tgt->lun_qpair_map, |
| cmd->unpacked_lun, h, GFP_ATOMIC); |
| if (rc) { |
| qp->lun_cnt--; |
| ql_log(ql_log_info, vha, 0xd038, |
| "Unable to insert lun %llx into lun_qpair_map\n", |
| cmd->unpacked_lun); |
| } |
| qpair = qp; |
| goto out; |
| } else { |
| if (qp->lun_cnt < lcnt) { |
| lcnt = qp->lun_cnt; |
| qpair = qp; |
| continue; |
| } |
| } |
| } |
| BUG_ON(!qpair); |
| qpair->lun_cnt++; |
| h = qla_qpair_to_hint(tgt, qpair); |
| BUG_ON(!h); |
| rc = btree_insert64(&tgt->lun_qpair_map, |
| cmd->unpacked_lun, h, GFP_ATOMIC); |
| if (rc) { |
| qpair->lun_cnt--; |
| ql_log(ql_log_info, vha, 0xd039, |
| "Unable to insert lun %llx into lun_qpair_map\n", |
| cmd->unpacked_lun); |
| } |
| } |
| } else { |
| h = &tgt->qphints[0]; |
| } |
| out: |
| cmd->qpair = h->qpair; |
| cmd->se_cmd.cpuid = h->cpuid; |
| } |
| |
| static struct qla_tgt_cmd *qlt_get_tag(scsi_qla_host_t *vha, |
| struct fc_port *sess, |
| struct atio_from_isp *atio) |
| { |
| struct qla_tgt_cmd *cmd; |
| |
| cmd = vha->hw->tgt.tgt_ops->get_cmd(sess); |
| if (!cmd) |
| return NULL; |
| |
| cmd->cmd_type = TYPE_TGT_CMD; |
| memcpy(&cmd->atio, atio, sizeof(*atio)); |
| INIT_LIST_HEAD(&cmd->sess_cmd_list); |
| cmd->state = QLA_TGT_STATE_NEW; |
| cmd->tgt = vha->vha_tgt.qla_tgt; |
| qlt_incr_num_pend_cmds(vha); |
| cmd->vha = vha; |
| cmd->sess = sess; |
| cmd->loop_id = sess->loop_id; |
| cmd->conf_compl_supported = sess->conf_compl_supported; |
| |
| cmd->trc_flags = 0; |
| cmd->jiffies_at_alloc = get_jiffies_64(); |
| |
| cmd->unpacked_lun = scsilun_to_int( |
| (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); |
| qlt_assign_qpair(vha, cmd); |
| cmd->reset_count = vha->hw->base_qpair->chip_reset; |
| cmd->vp_idx = vha->vp_idx; |
| cmd->edif = sess->edif.enable; |
| |
| return cmd; |
| } |
| |
| /* ha->hardware_lock supposed to be held on entry */ |
| static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, |
| struct atio_from_isp *atio) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| struct fc_port *sess; |
| struct qla_tgt_cmd *cmd; |
| unsigned long flags; |
| port_id_t id; |
| |
| if (unlikely(tgt->tgt_stop)) { |
| ql_dbg(ql_dbg_io, vha, 0x3061, |
| "New command while device %p is shutting down\n", tgt); |
| return -ENODEV; |
| } |
| |
| id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); |
| if (IS_SW_RESV_ADDR(id)) |
| return -EBUSY; |
| |
| sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id); |
| if (unlikely(!sess)) |
| return -EFAULT; |
| |
| /* Another WWN used to have our s_id. Our PLOGI scheduled its |
| * session deletion, but it's still in sess_del_work wq */ |
| if (sess->deleted) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, |
| "New command while old session %p is being deleted\n", |
| sess); |
| return -EFAULT; |
| } |
| |
| /* |
| * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. |
| */ |
| if (!kref_get_unless_zero(&sess->sess_kref)) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, |
| "%s: kref_get fail, %8phC oxid %x \n", |
| __func__, sess->port_name, |
| be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); |
| return -EFAULT; |
| } |
| |
| cmd = qlt_get_tag(vha, sess, atio); |
| if (!cmd) { |
| ql_dbg(ql_dbg_io, vha, 0x3062, |
| "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); |
| ha->tgt.tgt_ops->put_sess(sess); |
| return -EBUSY; |
| } |
| |
| cmd->cmd_in_wq = 1; |
| cmd->trc_flags |= TRC_NEW_CMD; |
| |
| spin_lock_irqsave(&vha->cmd_list_lock, flags); |
| list_add_tail(&cmd->cmd_list, &vha->qla_cmd_list); |
| spin_unlock_irqrestore(&vha->cmd_list_lock, flags); |
| |
| INIT_WORK(&cmd->work, qlt_do_work); |
| if (vha->flags.qpairs_available) { |
| queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); |
| } else if (ha->msix_count) { |
| if (cmd->atio.u.isp24.fcp_cmnd.rddata) |
| queue_work_on(smp_processor_id(), qla_tgt_wq, |
| &cmd->work); |
| else |
| queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, |
| &cmd->work); |
| } else { |
| queue_work(qla_tgt_wq, &cmd->work); |
| } |
| |
| return 0; |
| } |
| |
| /* ha->hardware_lock supposed to be held on entry */ |
| static int qlt_issue_task_mgmt(struct fc_port *sess, u64 lun, |
| int fn, void *iocb, int flags) |
| { |
| struct scsi_qla_host *vha = sess->vha; |
| struct qla_hw_data *ha = vha->hw; |
| struct qla_tgt_mgmt_cmd *mcmd; |
| struct atio_from_isp *a = (struct atio_from_isp *)iocb; |
| struct qla_qpair_hint *h = &vha->vha_tgt.qla_tgt->qphints[0]; |
| |
| mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); |
| if (!mcmd) { |
| ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, |
| "qla_target(%d): Allocation of management " |
| "command failed, some commands and their data could " |
| "leak\n", vha->vp_idx); |
| return -ENOMEM; |
| } |
| memset(mcmd, 0, sizeof(*mcmd)); |
| mcmd->sess = sess; |
| |
| if (iocb) { |
| memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, |
| sizeof(mcmd->orig_iocb.imm_ntfy)); |
| } |
| mcmd->tmr_func = fn; |
| mcmd->flags = flags; |
| mcmd->reset_count = ha->base_qpair->chip_reset; |
| mcmd->qpair = h->qpair; |
| mcmd->vha = vha; |
| mcmd->se_cmd.cpuid = h->cpuid; |
| mcmd->unpacked_lun = lun; |
| |
| switch (fn) { |
| case QLA_TGT_LUN_RESET: |
| case QLA_TGT_CLEAR_TS: |
| case QLA_TGT_ABORT_TS: |
| abort_cmds_for_lun(vha, lun, a->u.isp24.fcp_hdr.s_id); |
| fallthrough; |
| case QLA_TGT_CLEAR_ACA: |
| h = qlt_find_qphint(vha, mcmd->unpacked_lun); |
| mcmd->qpair = h->qpair; |
| mcmd->se_cmd.cpuid = h->cpuid; |
| break; |
| |
| case QLA_TGT_TARGET_RESET: |
| case QLA_TGT_NEXUS_LOSS_SESS: |
| case QLA_TGT_NEXUS_LOSS: |
| case QLA_TGT_ABORT_ALL: |
| default: |
| /* no-op */ |
| break; |
| } |
| |
| INIT_WORK(&mcmd->work, qlt_do_tmr_work); |
| queue_work_on(mcmd->se_cmd.cpuid, qla_tgt_wq, |
| &mcmd->work); |
| |
| return 0; |
| } |
| |
| /* ha->hardware_lock supposed to be held on entry */ |
| static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) |
| { |
| struct atio_from_isp *a = (struct atio_from_isp *)iocb; |
| struct qla_hw_data *ha = vha->hw; |
| struct fc_port *sess; |
| u64 unpacked_lun; |
| int fn; |
| unsigned long flags; |
| |
| fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; |
| |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags); |
| sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, |
| a->u.isp24.fcp_hdr.s_id); |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| |
| unpacked_lun = |
| scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); |
| |
| if (sess == NULL || sess->deleted) |
| return -EFAULT; |
| |
| return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); |
| } |
| |
| /* ha->hardware_lock supposed to be held on entry */ |
| static int __qlt_abort_task(struct scsi_qla_host *vha, |
| struct imm_ntfy_from_isp *iocb, struct fc_port *sess) |
| { |
| struct atio_from_isp *a = (struct atio_from_isp *)iocb; |
| struct qla_hw_data *ha = vha->hw; |
| struct qla_tgt_mgmt_cmd *mcmd; |
| u64 unpacked_lun; |
| int rc; |
| |
| mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); |
| if (mcmd == NULL) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, |
| "qla_target(%d): %s: Allocation of ABORT cmd failed\n", |
| vha->vp_idx, __func__); |
| return -ENOMEM; |
| } |
| memset(mcmd, 0, sizeof(*mcmd)); |
| |
| mcmd->sess = sess; |
| memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, |
| sizeof(mcmd->orig_iocb.imm_ntfy)); |
| |
| unpacked_lun = |
| scsilun_to_int((struct scsi_lun *)&a->u.isp24.fcp_cmnd.lun); |
| mcmd->reset_count = ha->base_qpair->chip_reset; |
| mcmd->tmr_func = QLA_TGT_2G_ABORT_TASK; |
| mcmd->qpair = ha->base_qpair; |
| |
| rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, mcmd->tmr_func, |
| le16_to_cpu(iocb->u.isp2x.seq_id)); |
| if (rc != 0) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, |
| "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", |
| vha->vp_idx, rc); |
| mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); |
| return -EFAULT; |
| } |
| |
| return 0; |
| } |
| |
| /* ha->hardware_lock supposed to be held on entry */ |
| static int qlt_abort_task(struct scsi_qla_host *vha, |
| struct imm_ntfy_from_isp *iocb) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct fc_port *sess; |
| int loop_id; |
| unsigned long flags; |
| |
| loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); |
| |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags); |
| sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| |
| if (sess == NULL) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, |
| "qla_target(%d): task abort for unexisting " |
| "session\n", vha->vp_idx); |
| return qlt_sched_sess_work(vha->vha_tgt.qla_tgt, |
| QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); |
| } |
| |
| return __qlt_abort_task(vha, iocb, sess); |
| } |
| |
| void qlt_logo_completion_handler(fc_port_t *fcport, int rc) |
| { |
| if (rc != MBS_COMMAND_COMPLETE) { |
| ql_dbg(ql_dbg_tgt_mgt, fcport->vha, 0xf093, |
| "%s: se_sess %p / sess %p from" |
| " port %8phC loop_id %#04x s_id %02x:%02x:%02x" |
| " LOGO failed: %#x\n", |
| __func__, |
| fcport->se_sess, |
| fcport, |
| fcport->port_name, fcport->loop_id, |
| fcport->d_id.b.domain, fcport->d_id.b.area, |
| fcport->d_id.b.al_pa, rc); |
| } |
| |
| fcport->logout_completed = 1; |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) |
| * |
| * Schedules sessions with matching port_id/loop_id but different wwn for |
| * deletion. Returns existing session with matching wwn if present. |
| * Null otherwise. |
| */ |
| struct fc_port * |
| qlt_find_sess_invalidate_other(scsi_qla_host_t *vha, uint64_t wwn, |
| port_id_t port_id, uint16_t loop_id, struct fc_port **conflict_sess) |
| { |
| struct fc_port *sess = NULL, *other_sess; |
| uint64_t other_wwn; |
| |
| *conflict_sess = NULL; |
| |
| list_for_each_entry(other_sess, &vha->vp_fcports, list) { |
| |
| other_wwn = wwn_to_u64(other_sess->port_name); |
| |
| if (wwn == other_wwn) { |
| WARN_ON(sess); |
| sess = other_sess; |
| continue; |
| } |
| |
| /* find other sess with nport_id collision */ |
| if (port_id.b24 == other_sess->d_id.b24) { |
| if (loop_id != other_sess->loop_id) { |
| ql_dbg(ql_dbg_disc, vha, 0x1000c, |
| "Invalidating sess %p loop_id %d wwn %llx.\n", |
| other_sess, other_sess->loop_id, other_wwn); |
| |
| /* |
| * logout_on_delete is set by default, but another |
| * session that has the same s_id/loop_id combo |
| * might have cleared it when requested this session |
| * deletion, so don't touch it |
| */ |
| qlt_schedule_sess_for_deletion(other_sess); |
| } else { |
| /* |
| * Another wwn used to have our s_id/loop_id |
| * kill the session, but don't free the loop_id |
| */ |
| ql_dbg(ql_dbg_disc, vha, 0xf01b, |
| "Invalidating sess %p loop_id %d wwn %llx.\n", |
| other_sess, other_sess->loop_id, other_wwn); |
| |
| other_sess->keep_nport_handle = 1; |
| if (other_sess->disc_state != DSC_DELETED) |
| *conflict_sess = other_sess; |
| qlt_schedule_sess_for_deletion(other_sess); |
| } |
| continue; |
| } |
| |
| /* find other sess with nport handle collision */ |
| if ((loop_id == other_sess->loop_id) && |
| (loop_id != FC_NO_LOOP_ID)) { |
| ql_dbg(ql_dbg_disc, vha, 0x1000d, |
| "Invalidating sess %p loop_id %d wwn %llx.\n", |
| other_sess, other_sess->loop_id, other_wwn); |
| |
| /* Same loop_id but different s_id |
| * Ok to kill and logout */ |
| qlt_schedule_sess_for_deletion(other_sess); |
| } |
| } |
| |
| return sess; |
| } |
| |
| /* Abort any commands for this s_id waiting on qla_tgt_wq workqueue */ |
| static int abort_cmds_for_s_id(struct scsi_qla_host *vha, port_id_t *s_id) |
| { |
| struct qla_tgt_sess_op *op; |
| struct qla_tgt_cmd *cmd; |
| uint32_t key; |
| int count = 0; |
| unsigned long flags; |
| |
| key = (((u32)s_id->b.domain << 16) | |
| ((u32)s_id->b.area << 8) | |
| ((u32)s_id->b.al_pa)); |
| |
| spin_lock_irqsave(&vha->cmd_list_lock, flags); |
| list_for_each_entry(op, &vha->unknown_atio_list, cmd_list) { |
| uint32_t op_key = sid_to_key(op->atio.u.isp24.fcp_hdr.s_id); |
| |
| if (op_key == key) { |
| op->aborted = true; |
| count++; |
| } |
| } |
| |
| list_for_each_entry(cmd, &vha->qla_cmd_list, cmd_list) { |
| uint32_t cmd_key = sid_to_key(cmd->atio.u.isp24.fcp_hdr.s_id); |
| |
| if (cmd_key == key) { |
| cmd->aborted = 1; |
| count++; |
| } |
| } |
| spin_unlock_irqrestore(&vha->cmd_list_lock, flags); |
| |
| return count; |
| } |
| |
| static int qlt_handle_login(struct scsi_qla_host *vha, |
| struct imm_ntfy_from_isp *iocb) |
| { |
| struct fc_port *sess = NULL, *conflict_sess = NULL; |
| uint64_t wwn; |
| port_id_t port_id; |
| uint16_t loop_id, wd3_lo; |
| int res = 0; |
| struct qlt_plogi_ack_t *pla; |
| unsigned long flags; |
| |
| lockdep_assert_held(&vha->hw->hardware_lock); |
| |
| wwn = wwn_to_u64(iocb->u.isp24.port_name); |
| |
| port_id.b.domain = iocb->u.isp24.port_id[2]; |
| port_id.b.area = iocb->u.isp24.port_id[1]; |
| port_id.b.al_pa = iocb->u.isp24.port_id[0]; |
| port_id.b.rsvd_1 = 0; |
| |
| loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); |
| |
| /* Mark all stale commands sitting in qla_tgt_wq for deletion */ |
| abort_cmds_for_s_id(vha, &port_id); |
| |
| if (wwn) { |
| spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); |
| sess = qlt_find_sess_invalidate_other(vha, wwn, |
| port_id, loop_id, &conflict_sess); |
| spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); |
| } else { |
| ql_dbg(ql_dbg_disc, vha, 0xffff, |
| "%s %d Term INOT due to WWN=0 lid=%d, NportID %06X ", |
| __func__, __LINE__, loop_id, port_id.b24); |
| qlt_send_term_imm_notif(vha, iocb, 1); |
| goto out; |
| } |
| |
| if (IS_SW_RESV_ADDR(port_id)) { |
| res = 1; |
| goto out; |
| } |
| |
| if (vha->hw->flags.edif_enabled && |
| !(vha->e_dbell.db_flags & EDB_ACTIVE) && |
| iocb->u.isp24.status_subcode == ELS_PLOGI && |
| !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { |
| ql_dbg(ql_dbg_disc, vha, 0xffff, |
| "%s %d Term INOT due to app not available lid=%d, NportID %06X ", |
| __func__, __LINE__, loop_id, port_id.b24); |
| qlt_send_term_imm_notif(vha, iocb, 1); |
| goto out; |
| } |
| |
| if (vha->hw->flags.edif_enabled) { |
| if (DBELL_INACTIVE(vha)) { |
| ql_dbg(ql_dbg_disc, vha, 0xffff, |
| "%s %d Term INOT due to app not started lid=%d, NportID %06X ", |
| __func__, __LINE__, loop_id, port_id.b24); |
| qlt_send_term_imm_notif(vha, iocb, 1); |
| goto out; |
| } else if (iocb->u.isp24.status_subcode == ELS_PLOGI && |
| !(le16_to_cpu(iocb->u.isp24.flags) & NOTIFY24XX_FLAGS_FCSP)) { |
| ql_dbg(ql_dbg_disc, vha, 0xffff, |
| "%s %d Term INOT due to unsecure lid=%d, NportID %06X ", |
| __func__, __LINE__, loop_id, port_id.b24); |
| qlt_send_term_imm_notif(vha, iocb, 1); |
| goto out; |
| } |
| } |
| |
| pla = qlt_plogi_ack_find_add(vha, &port_id, iocb); |
| if (!pla) { |
| ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0xffff, |
| "%s %d %8phC Term INOT due to mem alloc fail", |
| __func__, __LINE__, |
| iocb->u.isp24.port_name); |
| qlt_send_term_imm_notif(vha, iocb, 1); |
| goto out; |
| } |
| |
| if (conflict_sess) { |
| conflict_sess->login_gen++; |
| qlt_plogi_ack_link(vha, pla, conflict_sess, |
| QLT_PLOGI_LINK_CONFLICT); |
| } |
| |
| if (!sess) { |
| pla->ref_count++; |
| ql_dbg(ql_dbg_disc, vha, 0xffff, |
| "%s %d %8phC post new sess\n", |
| __func__, __LINE__, iocb->u.isp24.port_name); |
| if (iocb->u.isp24.status_subcode == ELS_PLOGI) |
| qla24xx_post_newsess_work(vha, &port_id, |
| iocb->u.isp24.port_name, |
| iocb->u.isp24.u.plogi.node_name, |
| pla, 0); |
| else |
| qla24xx_post_newsess_work(vha, &port_id, |
| iocb->u.isp24.port_name, NULL, |
| pla, 0); |
| |
| goto out; |
| } |
| |
| if (sess->disc_state == DSC_UPD_FCPORT) { |
| u16 sec; |
| |
| /* |
| * Remote port registration is still going on from |
| * previous login. Allow it to finish before we |
| * accept the new login. |
| */ |
| sess->next_disc_state = DSC_DELETE_PEND; |
| sec = jiffies_to_msecs(jiffies - |
| sess->jiffies_at_registration) / 1000; |
| if (sess->sec_since_registration < sec && sec && |
| !(sec % 5)) { |
| sess->sec_since_registration = sec; |
| ql_dbg(ql_dbg_disc, vha, 0xffff, |
| "%s %8phC - Slow Rport registration (%d Sec)\n", |
| __func__, sess->port_name, sec); |
| } |
| |
| if (!conflict_sess) { |
| list_del(&pla->list); |
| kmem_cache_free(qla_tgt_plogi_cachep, pla); |
| } |
| |
| qlt_send_term_imm_notif(vha, iocb, 1); |
| goto out; |
| } |
| |
| qlt_plogi_ack_link(vha, pla, sess, QLT_PLOGI_LINK_SAME_WWN); |
| sess->d_id = port_id; |
| sess->login_gen++; |
| sess->loop_id = loop_id; |
| |
| if (iocb->u.isp24.status_subcode == ELS_PLOGI) { |
| /* remote port has assigned Port ID */ |
| if (N2N_TOPO(vha->hw) && fcport_is_bigger(sess)) |
| vha->d_id = sess->d_id; |
| |
| ql_dbg(ql_dbg_disc, vha, 0xffff, |
| "%s %8phC - send port online\n", |
| __func__, sess->port_name); |
| |
| qla2x00_post_aen_work(vha, FCH_EVT_PORT_ONLINE, |
| sess->d_id.b24); |
| } |
| |
| if (iocb->u.isp24.status_subcode == ELS_PRLI) { |
| sess->fw_login_state = DSC_LS_PRLI_PEND; |
| sess->local = 0; |
| sess->loop_id = loop_id; |
| sess->d_id = port_id; |
| sess->fw_login_state = DSC_LS_PRLI_PEND; |
| wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); |
| |
| if (wd3_lo & BIT_7) |
| sess->conf_compl_supported = 1; |
| |
| if ((wd3_lo & BIT_4) == 0) |
| sess->port_type = FCT_INITIATOR; |
| else |
| sess->port_type = FCT_TARGET; |
| |
| } else |
| sess->fw_login_state = DSC_LS_PLOGI_PEND; |
| |
| |
| ql_dbg(ql_dbg_disc, vha, 0x20f9, |
| "%s %d %8phC DS %d\n", |
| __func__, __LINE__, sess->port_name, sess->disc_state); |
| |
| switch (sess->disc_state) { |
| case DSC_DELETED: |
| case DSC_LOGIN_PEND: |
| qlt_plogi_ack_unref(vha, pla); |
| break; |
| |
| default: |
| /* |
| * Under normal circumstances we want to release nport handle |
| * during LOGO process to avoid nport handle leaks inside FW. |
| * The exception is when LOGO is done while another PLOGI with |
| * the same nport handle is waiting as might be the case here. |
| * Note: there is always a possibily of a race where session |
| * deletion has already started for other reasons (e.g. ACL |
| * removal) and now PLOGI arrives: |
| * 1. if PLOGI arrived in FW after nport handle has been freed, |
| * FW must have assigned this PLOGI a new/same handle and we |
| * can proceed ACK'ing it as usual when session deletion |
| * completes. |
| * 2. if PLOGI arrived in FW before LOGO with LCF_FREE_NPORT |
| * bit reached it, the handle has now been released. We'll |
| * get an error when we ACK this PLOGI. Nothing will be sent |
| * back to initiator. Initiator should eventually retry |
| * PLOGI and situation will correct itself. |
| */ |
| sess->keep_nport_handle = ((sess->loop_id == loop_id) && |
| (sess->d_id.b24 == port_id.b24)); |
| |
| ql_dbg(ql_dbg_disc, vha, 0x20f9, |
| "%s %d %8phC post del sess\n", |
| __func__, __LINE__, sess->port_name); |
| |
| |
| qlt_schedule_sess_for_deletion(sess); |
| break; |
| } |
| out: |
| return res; |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| */ |
| static int qlt_24xx_handle_els(struct scsi_qla_host *vha, |
| struct imm_ntfy_from_isp *iocb) |
| { |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| struct qla_hw_data *ha = vha->hw; |
| struct fc_port *sess = NULL, *conflict_sess = NULL; |
| uint64_t wwn; |
| port_id_t port_id; |
| uint16_t loop_id; |
| uint16_t wd3_lo; |
| int res = 0; |
| unsigned long flags; |
| |
| lockdep_assert_held(&ha->hardware_lock); |
| |
| wwn = wwn_to_u64(iocb->u.isp24.port_name); |
| |
| port_id.b.domain = iocb->u.isp24.port_id[2]; |
| port_id.b.area = iocb->u.isp24.port_id[1]; |
| port_id.b.al_pa = iocb->u.isp24.port_id[0]; |
| port_id.b.rsvd_1 = 0; |
| |
| loop_id = le16_to_cpu(iocb->u.isp24.nport_handle); |
| |
| ql_dbg(ql_dbg_disc, vha, 0xf026, |
| "qla_target(%d): Port ID: %02x:%02x:%02x ELS opcode: 0x%02x lid %d %8phC\n", |
| vha->vp_idx, iocb->u.isp24.port_id[2], |
| iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[0], |
| iocb->u.isp24.status_subcode, loop_id, |
| iocb->u.isp24.port_name); |
| |
| /* res = 1 means ack at the end of thread |
| * res = 0 means ack async/later. |
| */ |
| switch (iocb->u.isp24.status_subcode) { |
| case ELS_PLOGI: |
| res = qlt_handle_login(vha, iocb); |
| break; |
| |
| case ELS_PRLI: |
| if (N2N_TOPO(ha)) { |
| sess = qla2x00_find_fcport_by_wwpn(vha, |
| iocb->u.isp24.port_name, 1); |
| |
| if (vha->hw->flags.edif_enabled && sess && |
| (!(sess->flags & FCF_FCSP_DEVICE) || |
| !sess->edif.authok)) { |
| ql_dbg(ql_dbg_disc, vha, 0xffff, |
| "%s %d %8phC Term PRLI due to unauthorize PRLI\n", |
| __func__, __LINE__, iocb->u.isp24.port_name); |
| qlt_send_term_imm_notif(vha, iocb, 1); |
| break; |
| } |
| |
| if (sess && sess->plogi_link[QLT_PLOGI_LINK_SAME_WWN]) { |
| ql_dbg(ql_dbg_disc, vha, 0xffff, |
| "%s %d %8phC Term PRLI due to PLOGI ACK not completed\n", |
| __func__, __LINE__, |
| iocb->u.isp24.port_name); |
| qlt_send_term_imm_notif(vha, iocb, 1); |
| break; |
| } |
| |
| res = qlt_handle_login(vha, iocb); |
| break; |
| } |
| |
| if (IS_SW_RESV_ADDR(port_id)) { |
| res = 1; |
| break; |
| } |
| |
| wd3_lo = le16_to_cpu(iocb->u.isp24.u.prli.wd3_lo); |
| |
| if (wwn) { |
| spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); |
| sess = qlt_find_sess_invalidate_other(vha, wwn, port_id, |
| loop_id, &conflict_sess); |
| spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); |
| } |
| |
| if (conflict_sess) { |
| switch (conflict_sess->disc_state) { |
| case DSC_DELETED: |
| case DSC_DELETE_PEND: |
| break; |
| default: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf09b, |
| "PRLI with conflicting sess %p port %8phC\n", |
| conflict_sess, conflict_sess->port_name); |
| conflict_sess->fw_login_state = |
| DSC_LS_PORT_UNAVAIL; |
| qlt_send_term_imm_notif(vha, iocb, 1); |
| res = 0; |
| break; |
| } |
| } |
| |
| if (sess != NULL) { |
| bool delete = false; |
| int sec; |
| |
| if (vha->hw->flags.edif_enabled && sess && |
| (!(sess->flags & FCF_FCSP_DEVICE) || |
| !sess->edif.authok)) { |
| ql_dbg(ql_dbg_disc, vha, 0xffff, |
| "%s %d %8phC Term PRLI due to unauthorize prli\n", |
| __func__, __LINE__, iocb->u.isp24.port_name); |
| qlt_send_term_imm_notif(vha, iocb, 1); |
| break; |
| } |
| |
| spin_lock_irqsave(&tgt->ha->tgt.sess_lock, flags); |
| switch (sess->fw_login_state) { |
| case DSC_LS_PLOGI_PEND: |
| case DSC_LS_PLOGI_COMP: |
| case DSC_LS_PRLI_COMP: |
| break; |
| default: |
| delete = true; |
| break; |
| } |
| |
| switch (sess->disc_state) { |
| case DSC_UPD_FCPORT: |
| spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, |
| flags); |
| |
| sec = jiffies_to_msecs(jiffies - |
| sess->jiffies_at_registration)/1000; |
| if (sess->sec_since_registration < sec && sec && |
| !(sec % 5)) { |
| sess->sec_since_registration = sec; |
| ql_dbg(ql_dbg_disc, sess->vha, 0xffff, |
| "%s %8phC : Slow Rport registration(%d Sec)\n", |
| __func__, sess->port_name, sec); |
| } |
| qlt_send_term_imm_notif(vha, iocb, 1); |
| return 0; |
| |
| case DSC_LOGIN_PEND: |
| case DSC_GPDB: |
| case DSC_LOGIN_COMPLETE: |
| case DSC_ADISC: |
| delete = false; |
| break; |
| default: |
| break; |
| } |
| |
| if (delete) { |
| spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, |
| flags); |
| /* |
| * Impatient initiator sent PRLI before last |
| * PLOGI could finish. Will force him to re-try, |
| * while last one finishes. |
| */ |
| ql_log(ql_log_warn, sess->vha, 0xf095, |
| "sess %p PRLI received, before plogi ack.\n", |
| sess); |
| qlt_send_term_imm_notif(vha, iocb, 1); |
| res = 0; |
| break; |
| } |
| |
| /* |
| * This shouldn't happen under normal circumstances, |
| * since we have deleted the old session during PLOGI |
| */ |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf096, |
| "PRLI (loop_id %#04x) for existing sess %p (loop_id %#04x)\n", |
| sess->loop_id, sess, iocb->u.isp24.nport_handle); |
| |
| sess->local = 0; |
| sess->loop_id = loop_id; |
| sess->d_id = port_id; |
| sess->fw_login_state = DSC_LS_PRLI_PEND; |
| |
| if (wd3_lo & BIT_7) |
| sess->conf_compl_supported = 1; |
| |
| if ((wd3_lo & BIT_4) == 0) |
| sess->port_type = FCT_INITIATOR; |
| else |
| sess->port_type = FCT_TARGET; |
| |
| spin_unlock_irqrestore(&tgt->ha->tgt.sess_lock, flags); |
| } |
| res = 1; /* send notify ack */ |
| |
| /* Make session global (not used in fabric mode) */ |
| if (ha->current_topology != ISP_CFG_F) { |
| if (sess) { |
| ql_dbg(ql_dbg_disc, vha, 0x20fa, |
| "%s %d %8phC post nack\n", |
| __func__, __LINE__, sess->port_name); |
| qla24xx_post_nack_work(vha, sess, iocb, |
| SRB_NACK_PRLI); |
| res = 0; |
| } else { |
| set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags); |
| set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); |
| qla2xxx_wake_dpc(vha); |
| } |
| } else { |
| if (sess) { |
| ql_dbg(ql_dbg_disc, vha, 0x20fb, |
| "%s %d %8phC post nack\n", |
| __func__, __LINE__, sess->port_name); |
| qla24xx_post_nack_work(vha, sess, iocb, |
| SRB_NACK_PRLI); |
| res = 0; |
| } |
| } |
| break; |
| |
| case ELS_TPRLO: |
| if (le16_to_cpu(iocb->u.isp24.flags) & |
| NOTIFY24XX_FLAGS_GLOBAL_TPRLO) { |
| loop_id = 0xFFFF; |
| qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS); |
| res = 1; |
| break; |
| } |
| fallthrough; |
| case ELS_LOGO: |
| case ELS_PRLO: |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags); |
| sess = qla2x00_find_fcport_by_loopid(vha, loop_id); |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| |
| if (sess) { |
| sess->login_gen++; |
| sess->fw_login_state = DSC_LS_LOGO_PEND; |
| sess->logo_ack_needed = 1; |
| memcpy(sess->iocb, iocb, IOCB_SIZE); |
| } |
| |
| res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); |
| |
| ql_dbg(ql_dbg_disc, vha, 0x20fc, |
| "%s: logo %llx res %d sess %p ", |
| __func__, wwn, res, sess); |
| if (res == 0) { |
| /* |
| * cmd went upper layer, look for qlt_xmit_tm_rsp() |
| * for LOGO_ACK & sess delete |
| */ |
| BUG_ON(!sess); |
| res = 0; |
| } else { |
| /* cmd did not go to upper layer. */ |
| if (sess) { |
| qlt_schedule_sess_for_deletion(sess); |
| res = 0; |
| } |
| /* else logo will be ack */ |
| } |
| break; |
| case ELS_PDISC: |
| case ELS_ADISC: |
| { |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| |
| if (tgt->link_reinit_iocb_pending) { |
| qlt_send_notify_ack(ha->base_qpair, |
| &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); |
| tgt->link_reinit_iocb_pending = 0; |
| } |
| |
| sess = qla2x00_find_fcport_by_wwpn(vha, |
| iocb->u.isp24.port_name, 1); |
| if (sess) { |
| ql_dbg(ql_dbg_disc, vha, 0x20fd, |
| "sess %p lid %d|%d DS %d LS %d\n", |
| sess, sess->loop_id, loop_id, |
| sess->disc_state, sess->fw_login_state); |
| } |
| |
| res = 1; /* send notify ack */ |
| break; |
| } |
| |
| case ELS_FLOGI: /* should never happen */ |
| default: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, |
| "qla_target(%d): Unsupported ELS command %x " |
| "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); |
| res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); |
| break; |
| } |
| |
| ql_dbg(ql_dbg_disc, vha, 0xf026, |
| "qla_target(%d): Exit ELS opcode: 0x%02x res %d\n", |
| vha->vp_idx, iocb->u.isp24.status_subcode, res); |
| |
| return res; |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. |
| * Might drop it, then reacquire. |
| */ |
| static void qlt_handle_imm_notify(struct scsi_qla_host *vha, |
| struct imm_ntfy_from_isp *iocb) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| uint32_t add_flags = 0; |
| int send_notify_ack = 1; |
| uint16_t status; |
| |
| lockdep_assert_held(&ha->hardware_lock); |
| |
| status = le16_to_cpu(iocb->u.isp2x.status); |
| switch (status) { |
| case IMM_NTFY_LIP_RESET: |
| { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, |
| "qla_target(%d): LIP reset (loop %#x), subcode %x\n", |
| vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), |
| iocb->u.isp24.status_subcode); |
| |
| if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) |
| send_notify_ack = 0; |
| break; |
| } |
| |
| case IMM_NTFY_LIP_LINK_REINIT: |
| { |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, |
| "qla_target(%d): LINK REINIT (loop %#x, " |
| "subcode %x)\n", vha->vp_idx, |
| le16_to_cpu(iocb->u.isp24.nport_handle), |
| iocb->u.isp24.status_subcode); |
| if (tgt->link_reinit_iocb_pending) { |
| qlt_send_notify_ack(ha->base_qpair, |
| &tgt->link_reinit_iocb, 0, 0, 0, 0, 0, 0); |
| } |
| memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); |
| tgt->link_reinit_iocb_pending = 1; |
| /* |
| * QLogic requires to wait after LINK REINIT for possible |
| * PDISC or ADISC ELS commands |
| */ |
| send_notify_ack = 0; |
| break; |
| } |
| |
| case IMM_NTFY_PORT_LOGOUT: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, |
| "qla_target(%d): Port logout (loop " |
| "%#x, subcode %x)\n", vha->vp_idx, |
| le16_to_cpu(iocb->u.isp24.nport_handle), |
| iocb->u.isp24.status_subcode); |
| |
| if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) |
| send_notify_ack = 0; |
| /* The sessions will be cleared in the callback, if needed */ |
| break; |
| |
| case IMM_NTFY_GLBL_TPRLO: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, |
| "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); |
| if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) |
| send_notify_ack = 0; |
| /* The sessions will be cleared in the callback, if needed */ |
| break; |
| |
| case IMM_NTFY_PORT_CONFIG: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, |
| "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, |
| status); |
| if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) |
| send_notify_ack = 0; |
| /* The sessions will be cleared in the callback, if needed */ |
| break; |
| |
| case IMM_NTFY_GLBL_LOGO: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, |
| "qla_target(%d): Link failure detected\n", |
| vha->vp_idx); |
| /* I_T nexus loss */ |
| if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) |
| send_notify_ack = 0; |
| break; |
| |
| case IMM_NTFY_IOCB_OVERFLOW: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, |
| "qla_target(%d): Cannot provide requested " |
| "capability (IOCB overflowed the immediate notify " |
| "resource count)\n", vha->vp_idx); |
| break; |
| |
| case IMM_NTFY_ABORT_TASK: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, |
| "qla_target(%d): Abort Task (S %08x I %#x -> " |
| "L %#x)\n", vha->vp_idx, |
| le16_to_cpu(iocb->u.isp2x.seq_id), |
| GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), |
| le16_to_cpu(iocb->u.isp2x.lun)); |
| if (qlt_abort_task(vha, iocb) == 0) |
| send_notify_ack = 0; |
| break; |
| |
| case IMM_NTFY_RESOURCE: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, |
| "qla_target(%d): Out of resources, host %ld\n", |
| vha->vp_idx, vha->host_no); |
| break; |
| |
| case IMM_NTFY_MSG_RX: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, |
| "qla_target(%d): Immediate notify task %x\n", |
| vha->vp_idx, iocb->u.isp2x.task_flags); |
| break; |
| |
| case IMM_NTFY_ELS: |
| if (qlt_24xx_handle_els(vha, iocb) == 0) |
| send_notify_ack = 0; |
| break; |
| default: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, |
| "qla_target(%d): Received unknown immediate " |
| "notify status %x\n", vha->vp_idx, status); |
| break; |
| } |
| |
| if (send_notify_ack) |
| qlt_send_notify_ack(ha->base_qpair, iocb, add_flags, 0, 0, 0, |
| 0, 0); |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| * This function sends busy to ISP 2xxx or 24xx. |
| */ |
| static int __qlt_send_busy(struct qla_qpair *qpair, |
| struct atio_from_isp *atio, uint16_t status) |
| { |
| struct scsi_qla_host *vha = qpair->vha; |
| struct ctio7_to_24xx *ctio24; |
| struct qla_hw_data *ha = vha->hw; |
| request_t *pkt; |
| struct fc_port *sess = NULL; |
| unsigned long flags; |
| u16 temp; |
| port_id_t id; |
| |
| id = be_to_port_id(atio->u.isp24.fcp_hdr.s_id); |
| |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags); |
| sess = qla2x00_find_fcport_by_nportid(vha, &id, 1); |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); |
| if (!sess) { |
| qlt_send_term_exchange(qpair, NULL, atio, 1, 0); |
| return 0; |
| } |
| /* Sending marker isn't necessary, since we called from ISR */ |
| |
| pkt = (request_t *)__qla2x00_alloc_iocbs(qpair, NULL); |
| if (!pkt) { |
| ql_dbg(ql_dbg_io, vha, 0x3063, |
| "qla_target(%d): %s failed: unable to allocate " |
| "request packet", vha->vp_idx, __func__); |
| return -ENOMEM; |
| } |
| |
| qpair->tgt_counters.num_q_full_sent++; |
| pkt->entry_count = 1; |
| pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; |
| |
| ctio24 = (struct ctio7_to_24xx *)pkt; |
| ctio24->entry_type = CTIO_TYPE7; |
| ctio24->nport_handle = cpu_to_le16(sess->loop_id); |
| ctio24->timeout = cpu_to_le16(QLA_TGT_TIMEOUT); |
| ctio24->vp_index = vha->vp_idx; |
| ctio24->initiator_id = be_id_to_le(atio->u.isp24.fcp_hdr.s_id); |
| ctio24->exchange_addr = atio->u.isp24.exchange_addr; |
| temp = (atio->u.isp24.attr << 9) | |
| CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | |
| CTIO7_FLAGS_DONT_RET_CTIO; |
| ctio24->u.status1.flags = cpu_to_le16(temp); |
| /* |
| * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, |
| * if the explicit conformation is used. |
| */ |
| ctio24->u.status1.ox_id = |
| cpu_to_le16(be16_to_cpu(atio->u.isp24.fcp_hdr.ox_id)); |
| ctio24->u.status1.scsi_status = cpu_to_le16(status); |
| |
| ctio24->u.status1.residual = cpu_to_le32(get_datalen_for_atio(atio)); |
| |
| if (ctio24->u.status1.residual != 0) |
| ctio24->u.status1.scsi_status |= cpu_to_le16(SS_RESIDUAL_UNDER); |
| |
| /* Memory Barrier */ |
| wmb(); |
| if (qpair->reqq_start_iocbs) |
| qpair->reqq_start_iocbs(qpair); |
| else |
| qla2x00_start_iocbs(vha, qpair->req); |
| return 0; |
| } |
| |
| /* |
| * This routine is used to allocate a command for either a QFull condition |
| * (ie reply SAM_STAT_BUSY) or to terminate an exchange that did not go |
| * out previously. |
| */ |
| static void |
| qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, |
| struct atio_from_isp *atio, uint16_t status, int qfull) |
| { |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| struct qla_hw_data *ha = vha->hw; |
| struct fc_port *sess; |
| struct qla_tgt_cmd *cmd; |
| unsigned long flags; |
| |
| if (unlikely(tgt->tgt_stop)) { |
| ql_dbg(ql_dbg_io, vha, 0x300a, |
| "New command while device %p is shutting down\n", tgt); |
| return; |
| } |
| |
| if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { |
| vha->hw->tgt.num_qfull_cmds_dropped++; |
| if (vha->hw->tgt.num_qfull_cmds_dropped > |
| vha->qla_stats.stat_max_qfull_cmds_dropped) |
| vha->qla_stats.stat_max_qfull_cmds_dropped = |
| vha->hw->tgt.num_qfull_cmds_dropped; |
| |
| ql_dbg(ql_dbg_io, vha, 0x3068, |
| "qla_target(%d): %s: QFull CMD dropped[%d]\n", |
| vha->vp_idx, __func__, |
| vha->hw->tgt.num_qfull_cmds_dropped); |
| |
| qlt_chk_exch_leak_thresh_hold(vha); |
| return; |
| } |
| |
| sess = ha->tgt.tgt_ops->find_sess_by_s_id |
| (vha, atio->u.isp24.fcp_hdr.s_id); |
| if (!sess) |
| return; |
| |
| cmd = ha->tgt.tgt_ops->get_cmd(sess); |
| if (!cmd) { |
| ql_dbg(ql_dbg_io, vha, 0x3009, |
| "qla_target(%d): %s: Allocation of cmd failed\n", |
| vha->vp_idx, __func__); |
| |
| vha->hw->tgt.num_qfull_cmds_dropped++; |
| if (vha->hw->tgt.num_qfull_cmds_dropped > |
| vha->qla_stats.stat_max_qfull_cmds_dropped) |
| vha->qla_stats.stat_max_qfull_cmds_dropped = |
| vha->hw->tgt.num_qfull_cmds_dropped; |
| |
| qlt_chk_exch_leak_thresh_hold(vha); |
| return; |
| } |
| |
| qlt_incr_num_pend_cmds(vha); |
| INIT_LIST_HEAD(&cmd->cmd_list); |
| memcpy(&cmd->atio, atio, sizeof(*atio)); |
| |
| cmd->tgt = vha->vha_tgt.qla_tgt; |
| cmd->vha = vha; |
| cmd->reset_count = ha->base_qpair->chip_reset; |
| cmd->q_full = 1; |
| cmd->qpair = ha->base_qpair; |
| |
| if (qfull) { |
| cmd->q_full = 1; |
| /* NOTE: borrowing the state field to carry the status */ |
| cmd->state = status; |
| } else |
| cmd->term_exchg = 1; |
| |
| spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); |
| list_add_tail(&cmd->cmd_list, &vha->hw->tgt.q_full_list); |
| |
| vha->hw->tgt.num_qfull_cmds_alloc++; |
| if (vha->hw->tgt.num_qfull_cmds_alloc > |
| vha->qla_stats.stat_max_qfull_cmds_alloc) |
| vha->qla_stats.stat_max_qfull_cmds_alloc = |
| vha->hw->tgt.num_qfull_cmds_alloc; |
| spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); |
| } |
| |
| int |
| qlt_free_qfull_cmds(struct qla_qpair *qpair) |
| { |
| struct scsi_qla_host *vha = qpair->vha; |
| struct qla_hw_data *ha = vha->hw; |
| unsigned long flags; |
| struct qla_tgt_cmd *cmd, *tcmd; |
| struct list_head free_list, q_full_list; |
| int rc = 0; |
| |
| if (list_empty(&ha->tgt.q_full_list)) |
| return 0; |
| |
| INIT_LIST_HEAD(&free_list); |
| INIT_LIST_HEAD(&q_full_list); |
| |
| spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); |
| if (list_empty(&ha->tgt.q_full_list)) { |
| spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); |
| return 0; |
| } |
| |
| list_splice_init(&vha->hw->tgt.q_full_list, &q_full_list); |
| spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); |
| |
| spin_lock_irqsave(qpair->qp_lock_ptr, flags); |
| list_for_each_entry_safe(cmd, tcmd, &q_full_list, cmd_list) { |
| if (cmd->q_full) |
| /* cmd->state is a borrowed field to hold status */ |
| rc = __qlt_send_busy(qpair, &cmd->atio, cmd->state); |
| else if (cmd->term_exchg) |
| rc = __qlt_send_term_exchange(qpair, NULL, &cmd->atio); |
| |
| if (rc == -ENOMEM) |
| break; |
| |
| if (cmd->q_full) |
| ql_dbg(ql_dbg_io, vha, 0x3006, |
| "%s: busy sent for ox_id[%04x]\n", __func__, |
| be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); |
| else if (cmd->term_exchg) |
| ql_dbg(ql_dbg_io, vha, 0x3007, |
| "%s: Term exchg sent for ox_id[%04x]\n", __func__, |
| be16_to_cpu(cmd->atio.u.isp24.fcp_hdr.ox_id)); |
| else |
| ql_dbg(ql_dbg_io, vha, 0x3008, |
| "%s: Unexpected cmd in QFull list %p\n", __func__, |
| cmd); |
| |
| list_move_tail(&cmd->cmd_list, &free_list); |
| |
| /* piggy back on hardware_lock for protection */ |
| vha->hw->tgt.num_qfull_cmds_alloc--; |
| } |
| spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); |
| |
| cmd = NULL; |
| |
| list_for_each_entry_safe(cmd, tcmd, &free_list, cmd_list) { |
| list_del(&cmd->cmd_list); |
| /* This cmd was never sent to TCM. There is no need |
| * to schedule free or call free_cmd |
| */ |
| qlt_free_cmd(cmd); |
| } |
| |
| if (!list_empty(&q_full_list)) { |
| spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); |
| list_splice(&q_full_list, &vha->hw->tgt.q_full_list); |
| spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); |
| } |
| |
| return rc; |
| } |
| |
| static void |
| qlt_send_busy(struct qla_qpair *qpair, struct atio_from_isp *atio, |
| uint16_t status) |
| { |
| int rc = 0; |
| struct scsi_qla_host *vha = qpair->vha; |
| |
| rc = __qlt_send_busy(qpair, atio, status); |
| if (rc == -ENOMEM) |
| qlt_alloc_qfull_cmd(vha, atio, status, 1); |
| } |
| |
| static int |
| qlt_chk_qfull_thresh_hold(struct scsi_qla_host *vha, struct qla_qpair *qpair, |
| struct atio_from_isp *atio, uint8_t ha_locked) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| unsigned long flags; |
| |
| if (ha->tgt.num_pend_cmds < Q_FULL_THRESH_HOLD(ha)) |
| return 0; |
| |
| if (!ha_locked) |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| qlt_send_busy(qpair, atio, qla_sam_status); |
| if (!ha_locked) |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| return 1; |
| } |
| |
| /* ha->hardware_lock supposed to be held on entry */ |
| /* called via callback from qla2xxx */ |
| static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, |
| struct atio_from_isp *atio, uint8_t ha_locked) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| int rc; |
| unsigned long flags = 0; |
| |
| if (unlikely(tgt == NULL)) { |
| ql_dbg(ql_dbg_tgt, vha, 0x3064, |
| "ATIO pkt, but no tgt (ha %p)", ha); |
| return; |
| } |
| /* |
| * In tgt_stop mode we also should allow all requests to pass. |
| * Otherwise, some commands can stuck. |
| */ |
| |
| tgt->atio_irq_cmd_count++; |
| |
| switch (atio->u.raw.entry_type) { |
| case ATIO_TYPE7: |
| if (unlikely(atio->u.isp24.exchange_addr == |
| cpu_to_le32(ATIO_EXCHANGE_ADDRESS_UNKNOWN))) { |
| ql_dbg(ql_dbg_io, vha, 0x3065, |
| "qla_target(%d): ATIO_TYPE7 " |
| "received with UNKNOWN exchange address, " |
| "sending QUEUE_FULL\n", vha->vp_idx); |
| if (!ha_locked) |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| qlt_send_busy(ha->base_qpair, atio, qla_sam_status); |
| if (!ha_locked) |
| spin_unlock_irqrestore(&ha->hardware_lock, |
| flags); |
| break; |
| } |
| |
| if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) { |
| rc = qlt_chk_qfull_thresh_hold(vha, ha->base_qpair, |
| atio, ha_locked); |
| if (rc != 0) { |
| tgt->atio_irq_cmd_count--; |
| return; |
| } |
| rc = qlt_handle_cmd_for_atio(vha, atio); |
| } else { |
| rc = qlt_handle_task_mgmt(vha, atio); |
| } |
| if (unlikely(rc != 0)) { |
| if (!ha_locked) |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| switch (rc) { |
| case -ENODEV: |
| ql_dbg(ql_dbg_tgt, vha, 0xe05f, |
| "qla_target: Unable to send command to target\n"); |
| break; |
| case -EBADF: |
| ql_dbg(ql_dbg_tgt, vha, 0xe05f, |
| "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); |
| qlt_send_term_exchange(ha->base_qpair, NULL, |
| atio, 1, 0); |
| break; |
| case -EBUSY: |
| ql_dbg(ql_dbg_tgt, vha, 0xe060, |
| "qla_target(%d): Unable to send command to target, sending BUSY status\n", |
| vha->vp_idx); |
| qlt_send_busy(ha->base_qpair, atio, |
| tc_sam_status); |
| break; |
| default: |
| ql_dbg(ql_dbg_tgt, vha, 0xe060, |
| "qla_target(%d): Unable to send command to target, sending BUSY status\n", |
| vha->vp_idx); |
| qlt_send_busy(ha->base_qpair, atio, |
| qla_sam_status); |
| break; |
| } |
| if (!ha_locked) |
| spin_unlock_irqrestore(&ha->hardware_lock, |
| flags); |
| } |
| break; |
| |
| case IMMED_NOTIFY_TYPE: |
| { |
| if (unlikely(atio->u.isp2x.entry_status != 0)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe05b, |
| "qla_target(%d): Received ATIO packet %x " |
| "with error status %x\n", vha->vp_idx, |
| atio->u.raw.entry_type, |
| atio->u.isp2x.entry_status); |
| break; |
| } |
| ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); |
| |
| if (!ha_locked) |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); |
| if (!ha_locked) |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| break; |
| } |
| |
| default: |
| ql_dbg(ql_dbg_tgt, vha, 0xe05c, |
| "qla_target(%d): Received unknown ATIO atio " |
| "type %x\n", vha->vp_idx, atio->u.raw.entry_type); |
| break; |
| } |
| |
| tgt->atio_irq_cmd_count--; |
| } |
| |
| /* |
| * qpair lock is assume to be held |
| * rc = 0 : send terminate & abts respond |
| * rc != 0: do not send term & abts respond |
| */ |
| static int qlt_chk_unresolv_exchg(struct scsi_qla_host *vha, |
| struct qla_qpair *qpair, struct abts_resp_from_24xx_fw *entry) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| int rc = 0; |
| |
| /* |
| * Detect unresolved exchange. If the same ABTS is unable |
| * to terminate an existing command and the same ABTS loops |
| * between FW & Driver, then force FW dump. Under 1 jiff, |
| * we should see multiple loops. |
| */ |
| if (qpair->retry_term_exchg_addr == entry->exchange_addr_to_abort && |
| qpair->retry_term_jiff == jiffies) { |
| /* found existing exchange */ |
| qpair->retry_term_cnt++; |
| if (qpair->retry_term_cnt >= 5) { |
| rc = -EIO; |
| qpair->retry_term_cnt = 0; |
| ql_log(ql_log_warn, vha, 0xffff, |
| "Unable to send ABTS Respond. Dumping firmware.\n"); |
| ql_dump_buffer(ql_dbg_tgt_mgt + ql_dbg_buffer, |
| vha, 0xffff, (uint8_t *)entry, sizeof(*entry)); |
| |
| if (qpair == ha->base_qpair) |
| ha->isp_ops->fw_dump(vha); |
| else |
| qla2xxx_dump_fw(vha); |
| |
| set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); |
| qla2xxx_wake_dpc(vha); |
| } |
| } else if (qpair->retry_term_jiff != jiffies) { |
| qpair->retry_term_exchg_addr = entry->exchange_addr_to_abort; |
| qpair->retry_term_cnt = 0; |
| qpair->retry_term_jiff = jiffies; |
| } |
| |
| return rc; |
| } |
| |
| |
| static void qlt_handle_abts_completion(struct scsi_qla_host *vha, |
| struct rsp_que *rsp, response_t *pkt) |
| { |
| struct abts_resp_from_24xx_fw *entry = |
| (struct abts_resp_from_24xx_fw *)pkt; |
| u32 h = pkt->handle & ~QLA_TGT_HANDLE_MASK; |
| struct qla_tgt_mgmt_cmd *mcmd; |
| struct qla_hw_data *ha = vha->hw; |
| |
| mcmd = qlt_ctio_to_cmd(vha, rsp, pkt->handle, pkt); |
| if (mcmd == NULL && h != QLA_TGT_SKIP_HANDLE) { |
| ql_dbg(ql_dbg_async, vha, 0xe064, |
| "qla_target(%d): ABTS Comp without mcmd\n", |
| vha->vp_idx); |
| return; |
| } |
| |
| if (mcmd) |
| vha = mcmd->vha; |
| vha->vha_tgt.qla_tgt->abts_resp_expected--; |
| |
| ql_dbg(ql_dbg_tgt, vha, 0xe038, |
| "ABTS_RESP_24XX: compl_status %x\n", |
| entry->compl_status); |
| |
| if (le16_to_cpu(entry->compl_status) != ABTS_RESP_COMPL_SUCCESS) { |
| if (le32_to_cpu(entry->error_subcode1) == 0x1E && |
| le32_to_cpu(entry->error_subcode2) == 0) { |
| if (qlt_chk_unresolv_exchg(vha, rsp->qpair, entry)) { |
| ha->tgt.tgt_ops->free_mcmd(mcmd); |
| return; |
| } |
| qlt_24xx_retry_term_exchange(vha, rsp->qpair, |
| pkt, mcmd); |
| } else { |
| ql_dbg(ql_dbg_tgt, vha, 0xe063, |
| "qla_target(%d): ABTS_RESP_24XX failed %x (subcode %x:%x)", |
| vha->vp_idx, entry->compl_status, |
| entry->error_subcode1, |
| entry->error_subcode2); |
| ha->tgt.tgt_ops->free_mcmd(mcmd); |
| } |
| } else if (mcmd) { |
| ha->tgt.tgt_ops->free_mcmd(mcmd); |
| } |
| } |
| |
| /* ha->hardware_lock supposed to be held on entry */ |
| /* called via callback from qla2xxx */ |
| static void qlt_response_pkt(struct scsi_qla_host *vha, |
| struct rsp_que *rsp, response_t *pkt) |
| { |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| |
| if (unlikely(tgt == NULL)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe05d, |
| "qla_target(%d): Response pkt %x received, but no tgt (ha %p)\n", |
| vha->vp_idx, pkt->entry_type, vha->hw); |
| return; |
| } |
| |
| /* |
| * In tgt_stop mode we also should allow all requests to pass. |
| * Otherwise, some commands can stuck. |
| */ |
| |
| switch (pkt->entry_type) { |
| case CTIO_CRC2: |
| case CTIO_TYPE7: |
| { |
| struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; |
| |
| qlt_do_ctio_completion(vha, rsp, entry->handle, |
| le16_to_cpu(entry->status)|(pkt->entry_status << 16), |
| entry); |
| break; |
| } |
| |
| case ACCEPT_TGT_IO_TYPE: |
| { |
| struct atio_from_isp *atio = (struct atio_from_isp *)pkt; |
| int rc; |
| |
| if (atio->u.isp2x.status != |
| cpu_to_le16(ATIO_CDB_VALID)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe05e, |
| "qla_target(%d): ATIO with error " |
| "status %x received\n", vha->vp_idx, |
| le16_to_cpu(atio->u.isp2x.status)); |
| break; |
| } |
| |
| rc = qlt_chk_qfull_thresh_hold(vha, rsp->qpair, atio, 1); |
| if (rc != 0) |
| return; |
| |
| rc = qlt_handle_cmd_for_atio(vha, atio); |
| if (unlikely(rc != 0)) { |
| switch (rc) { |
| case -ENODEV: |
| ql_dbg(ql_dbg_tgt, vha, 0xe05f, |
| "qla_target: Unable to send command to target\n"); |
| break; |
| case -EBADF: |
| ql_dbg(ql_dbg_tgt, vha, 0xe05f, |
| "qla_target: Unable to send command to target, sending TERM EXCHANGE for rsp\n"); |
| qlt_send_term_exchange(rsp->qpair, NULL, |
| atio, 1, 0); |
| break; |
| case -EBUSY: |
| ql_dbg(ql_dbg_tgt, vha, 0xe060, |
| "qla_target(%d): Unable to send command to target, sending BUSY status\n", |
| vha->vp_idx); |
| qlt_send_busy(rsp->qpair, atio, |
| tc_sam_status); |
| break; |
| default: |
| ql_dbg(ql_dbg_tgt, vha, 0xe060, |
| "qla_target(%d): Unable to send command to target, sending BUSY status\n", |
| vha->vp_idx); |
| qlt_send_busy(rsp->qpair, atio, |
| qla_sam_status); |
| break; |
| } |
| } |
| } |
| break; |
| |
| case CONTINUE_TGT_IO_TYPE: |
| { |
| struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; |
| |
| qlt_do_ctio_completion(vha, rsp, entry->handle, |
| le16_to_cpu(entry->status)|(pkt->entry_status << 16), |
| entry); |
| break; |
| } |
| |
| case CTIO_A64_TYPE: |
| { |
| struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; |
| |
| qlt_do_ctio_completion(vha, rsp, entry->handle, |
| le16_to_cpu(entry->status)|(pkt->entry_status << 16), |
| entry); |
| break; |
| } |
| |
| case IMMED_NOTIFY_TYPE: |
| ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); |
| qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); |
| break; |
| |
| case NOTIFY_ACK_TYPE: |
| if (tgt->notify_ack_expected > 0) { |
| struct nack_to_isp *entry = (struct nack_to_isp *)pkt; |
| |
| ql_dbg(ql_dbg_tgt, vha, 0xe036, |
| "NOTIFY_ACK seq %08x status %x\n", |
| le16_to_cpu(entry->u.isp2x.seq_id), |
| le16_to_cpu(entry->u.isp2x.status)); |
| tgt->notify_ack_expected--; |
| if (entry->u.isp2x.status != |
| cpu_to_le16(NOTIFY_ACK_SUCCESS)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe061, |
| "qla_target(%d): NOTIFY_ACK " |
| "failed %x\n", vha->vp_idx, |
| le16_to_cpu(entry->u.isp2x.status)); |
| } |
| } else { |
| ql_dbg(ql_dbg_tgt, vha, 0xe062, |
| "qla_target(%d): Unexpected NOTIFY_ACK received\n", |
| vha->vp_idx); |
| } |
| break; |
| |
| case ABTS_RECV_24XX: |
| ql_dbg(ql_dbg_tgt, vha, 0xe037, |
| "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); |
| qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); |
| break; |
| |
| case ABTS_RESP_24XX: |
| if (tgt->abts_resp_expected > 0) { |
| qlt_handle_abts_completion(vha, rsp, pkt); |
| } else { |
| ql_dbg(ql_dbg_tgt, vha, 0xe064, |
| "qla_target(%d): Unexpected ABTS_RESP_24XX " |
| "received\n", vha->vp_idx); |
| } |
| break; |
| |
| default: |
| ql_dbg(ql_dbg_tgt, vha, 0xe065, |
| "qla_target(%d): Received unknown response pkt " |
| "type %x\n", vha->vp_idx, pkt->entry_type); |
| break; |
| } |
| |
| } |
| |
| /* |
| * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire |
| */ |
| void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, |
| uint16_t *mailbox) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| int login_code; |
| |
| if (!tgt || tgt->tgt_stop || tgt->tgt_stopped) |
| return; |
| |
| if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && |
| IS_QLA2100(ha)) |
| return; |
| /* |
| * In tgt_stop mode we also should allow all requests to pass. |
| * Otherwise, some commands can stuck. |
| */ |
| |
| |
| switch (code) { |
| case MBA_RESET: /* Reset */ |
| case MBA_SYSTEM_ERR: /* System Error */ |
| case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ |
| case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, |
| "qla_target(%d): System error async event %#x " |
| "occurred", vha->vp_idx, code); |
| break; |
| case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ |
| set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); |
| break; |
| |
| case MBA_LOOP_UP: |
| { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, |
| "qla_target(%d): Async LOOP_UP occurred " |
| "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, |
| mailbox[0], mailbox[1], mailbox[2], mailbox[3]); |
| if (tgt->link_reinit_iocb_pending) { |
| qlt_send_notify_ack(ha->base_qpair, |
| &tgt->link_reinit_iocb, |
| 0, 0, 0, 0, 0, 0); |
| tgt->link_reinit_iocb_pending = 0; |
| } |
| break; |
| } |
| |
| case MBA_LIP_OCCURRED: |
| case MBA_LOOP_DOWN: |
| case MBA_LIP_RESET: |
| case MBA_RSCN_UPDATE: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, |
| "qla_target(%d): Async event %#x occurred " |
| "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, |
| mailbox[0], mailbox[1], mailbox[2], mailbox[3]); |
| break; |
| |
| case MBA_REJECTED_FCP_CMD: |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf017, |
| "qla_target(%d): Async event LS_REJECT occurred (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", |
| vha->vp_idx, |
| mailbox[0], mailbox[1], mailbox[2], mailbox[3]); |
| |
| if (mailbox[3] == 1) { |
| /* exchange starvation. */ |
| vha->hw->exch_starvation++; |
| if (vha->hw->exch_starvation > 5) { |
| ql_log(ql_log_warn, vha, 0xd03a, |
| "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 " |
| "occurred: updating the ports database (m[0]=%x, m[1]=%x, " |
| "m[2]=%x, m[3]=%x)", vha->vp_idx, code, |
| mailbox[0], mailbox[1], mailbox[2], mailbox[3]); |
| |
| login_code = mailbox[2]; |
| if (login_code == 0x4) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, |
| "Async MB 2: Got PLOGI Complete\n"); |
| 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; |
| default: |
| break; |
| } |
| |
| } |
| |
| static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, |
| uint16_t loop_id) |
| { |
| fc_port_t *fcport, *tfcp, *del; |
| int rc; |
| unsigned long flags; |
| u8 newfcport = 0; |
| |
| fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL); |
| if (!fcport) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, |
| "qla_target(%d): Allocation of tmp FC port failed", |
| vha->vp_idx); |
| return NULL; |
| } |
| |
| fcport->loop_id = loop_id; |
| |
| rc = qla24xx_gpdb_wait(vha, fcport, 0); |
| if (rc != QLA_SUCCESS) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, |
| "qla_target(%d): Failed to retrieve fcport " |
| "information -- get_port_database() returned %x " |
| "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); |
| kfree(fcport); |
| return NULL; |
| } |
| |
| del = NULL; |
| spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); |
| tfcp = qla2x00_find_fcport_by_wwpn(vha, fcport->port_name, 1); |
| |
| if (tfcp) { |
| tfcp->d_id = fcport->d_id; |
| tfcp->port_type = fcport->port_type; |
| tfcp->supported_classes = fcport->supported_classes; |
| tfcp->flags |= fcport->flags; |
| tfcp->scan_state = QLA_FCPORT_FOUND; |
| |
| del = fcport; |
| fcport = tfcp; |
| } else { |
| if (vha->hw->current_topology == ISP_CFG_F) |
| fcport->flags |= FCF_FABRIC_DEVICE; |
| |
| list_add_tail(&fcport->list, &vha->vp_fcports); |
| if (!IS_SW_RESV_ADDR(fcport->d_id)) |
| vha->fcport_count++; |
| fcport->login_gen++; |
| qla2x00_set_fcport_disc_state(fcport, DSC_LOGIN_COMPLETE); |
| fcport->login_succ = 1; |
| newfcport = 1; |
| } |
| |
| fcport->deleted = 0; |
| spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); |
| |
| switch (vha->host->active_mode) { |
| case MODE_INITIATOR: |
| case MODE_DUAL: |
| if (newfcport) { |
| if (!IS_IIDMA_CAPABLE(vha->hw) || !vha->hw->flags.gpsc_supported) { |
| qla24xx_sched_upd_fcport(fcport); |
| } else { |
| ql_dbg(ql_dbg_disc, vha, 0x20ff, |
| "%s %d %8phC post gpsc fcp_cnt %d\n", |
| __func__, __LINE__, fcport->port_name, vha->fcport_count); |
| qla24xx_post_gpsc_work(vha, fcport); |
| } |
| } |
| break; |
| |
| case MODE_TARGET: |
| default: |
| break; |
| } |
| if (del) |
| qla2x00_free_fcport(del); |
| |
| return fcport; |
| } |
| |
| /* Must be called under tgt_mutex */ |
| static struct fc_port *qlt_make_local_sess(struct scsi_qla_host *vha, |
| be_id_t s_id) |
| { |
| struct fc_port *sess = NULL; |
| fc_port_t *fcport = NULL; |
| int rc, global_resets; |
| uint16_t loop_id = 0; |
| |
| if (s_id.domain == 0xFF && s_id.area == 0xFC) { |
| /* |
| * This is Domain Controller, so it should be |
| * OK to drop SCSI commands from it. |
| */ |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, |
| "Unable to find initiator with S_ID %x:%x:%x", |
| s_id.domain, s_id.area, s_id.al_pa); |
| return NULL; |
| } |
| |
| mutex_lock(&vha->vha_tgt.tgt_mutex); |
| |
| retry: |
| global_resets = |
| atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count); |
| |
| rc = qla24xx_get_loop_id(vha, s_id, &loop_id); |
| if (rc != 0) { |
| mutex_unlock(&vha->vha_tgt.tgt_mutex); |
| |
| ql_log(ql_log_info, vha, 0xf071, |
| "qla_target(%d): Unable to find " |
| "initiator with S_ID %x:%x:%x", |
| vha->vp_idx, s_id.domain, s_id.area, s_id.al_pa); |
| |
| if (rc == -ENOENT) { |
| qlt_port_logo_t logo; |
| |
| logo.id = be_to_port_id(s_id); |
| logo.cmd_count = 1; |
| qlt_send_first_logo(vha, &logo); |
| } |
| |
| return NULL; |
| } |
| |
| fcport = qlt_get_port_database(vha, loop_id); |
| if (!fcport) { |
| mutex_unlock(&vha->vha_tgt.tgt_mutex); |
| return NULL; |
| } |
| |
| if (global_resets != |
| atomic_read(&vha->vha_tgt.qla_tgt->tgt_global_resets_count)) { |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, |
| "qla_target(%d): global reset during session discovery " |
| "(counter was %d, new %d), retrying", vha->vp_idx, |
| global_resets, |
| atomic_read(&vha->vha_tgt. |
| qla_tgt->tgt_global_resets_count)); |
| goto retry; |
| } |
| |
| sess = qlt_create_sess(vha, fcport, true); |
| |
| mutex_unlock(&vha->vha_tgt.tgt_mutex); |
| |
| return sess; |
| } |
| |
| static void qlt_abort_work(struct qla_tgt *tgt, |
| struct qla_tgt_sess_work_param *prm) |
| { |
| struct scsi_qla_host *vha = tgt->vha; |
| struct qla_hw_data *ha = vha->hw; |
| struct fc_port *sess = NULL; |
| unsigned long flags = 0, flags2 = 0; |
| be_id_t s_id; |
| int rc; |
| |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags2); |
| |
| if (tgt->tgt_stop) |
| goto out_term2; |
| |
| s_id = le_id_to_be(prm->abts.fcp_hdr_le.s_id); |
| |
| sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); |
| if (!sess) { |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); |
| |
| sess = qlt_make_local_sess(vha, s_id); |
| /* sess has got an extra creation ref */ |
| |
| spin_lock_irqsave(&ha->tgt.sess_lock, flags2); |
| if (!sess) |
| goto out_term2; |
| } else { |
| if (sess->deleted) { |
| sess = NULL; |
| goto out_term2; |
| } |
| |
| if (!kref_get_unless_zero(&sess->sess_kref)) { |
| ql_dbg(ql_dbg_tgt_tmr, vha, 0xf01c, |
| "%s: kref_get fail %8phC \n", |
| __func__, sess->port_name); |
| sess = NULL; |
| goto out_term2; |
| } |
| } |
| |
| rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); |
| |
| ha->tgt.tgt_ops->put_sess(sess); |
| |
| if (rc != 0) |
| goto out_term; |
| return; |
| |
| out_term2: |
| spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); |
| |
| out_term: |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| qlt_24xx_send_abts_resp(ha->base_qpair, &prm->abts, |
| FCP_TMF_REJECTED, false); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| } |
| |
| static void qlt_sess_work_fn(struct work_struct *work) |
| { |
| struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); |
| struct scsi_qla_host *vha = tgt->vha; |
| unsigned long flags; |
| |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); |
| |
| spin_lock_irqsave(&tgt->sess_work_lock, flags); |
| while (!list_empty(&tgt->sess_works_list)) { |
| struct qla_tgt_sess_work_param *prm = list_entry( |
| tgt->sess_works_list.next, typeof(*prm), |
| sess_works_list_entry); |
| |
| /* |
| * This work can be scheduled on several CPUs at time, so we |
| * must delete the entry to eliminate double processing |
| */ |
| list_del(&prm->sess_works_list_entry); |
| |
| spin_unlock_irqrestore(&tgt->sess_work_lock, flags); |
| |
| switch (prm->type) { |
| case QLA_TGT_SESS_WORK_ABORT: |
| qlt_abort_work(tgt, prm); |
| break; |
| default: |
| BUG_ON(1); |
| break; |
| } |
| |
| spin_lock_irqsave(&tgt->sess_work_lock, flags); |
| |
| kfree(prm); |
| } |
| spin_unlock_irqrestore(&tgt->sess_work_lock, flags); |
| } |
| |
| /* Must be called under tgt_host_action_mutex */ |
| int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) |
| { |
| struct qla_tgt *tgt; |
| int rc, i; |
| struct qla_qpair_hint *h; |
| |
| if (!QLA_TGT_MODE_ENABLED()) |
| return 0; |
| |
| if (!IS_TGT_MODE_CAPABLE(ha)) { |
| ql_log(ql_log_warn, base_vha, 0xe070, |
| "This adapter does not support target mode.\n"); |
| return 0; |
| } |
| |
| ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, |
| "Registering target for host %ld(%p).\n", base_vha->host_no, ha); |
| |
| BUG_ON(base_vha->vha_tgt.qla_tgt != NULL); |
| |
| tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); |
| if (!tgt) { |
| ql_dbg(ql_dbg_tgt, base_vha, 0xe066, |
| "Unable to allocate struct qla_tgt\n"); |
| return -ENOMEM; |
| } |
| |
| tgt->qphints = kcalloc(ha->max_qpairs + 1, |
| sizeof(struct qla_qpair_hint), |
| GFP_KERNEL); |
| if (!tgt->qphints) { |
| kfree(tgt); |
| ql_log(ql_log_warn, base_vha, 0x0197, |
| "Unable to allocate qpair hints.\n"); |
| return -ENOMEM; |
| } |
| |
| qla2xxx_driver_template.supported_mode |= MODE_TARGET; |
| |
| rc = btree_init64(&tgt->lun_qpair_map); |
| if (rc) { |
| kfree(tgt->qphints); |
| kfree(tgt); |
| ql_log(ql_log_info, base_vha, 0x0198, |
| "Unable to initialize lun_qpair_map btree\n"); |
| return -EIO; |
| } |
| h = &tgt->qphints[0]; |
| h->qpair = ha->base_qpair; |
| INIT_LIST_HEAD(&h->hint_elem); |
| h->cpuid = ha->base_qpair->cpuid; |
| list_add_tail(&h->hint_elem, &ha->base_qpair->hints_list); |
| |
| for (i = 0; i < ha->max_qpairs; i++) { |
| unsigned long flags; |
| |
| struct qla_qpair *qpair = ha->queue_pair_map[i]; |
| |
| h = &tgt->qphints[i + 1]; |
| INIT_LIST_HEAD(&h->hint_elem); |
| if (qpair) { |
| h->qpair = qpair; |
| spin_lock_irqsave(qpair->qp_lock_ptr, flags); |
| list_add_tail(&h->hint_elem, &qpair->hints_list); |
| spin_unlock_irqrestore(qpair->qp_lock_ptr, flags); |
| h->cpuid = qpair->cpuid; |
| } |
| } |
| |
| tgt->ha = ha; |
| tgt->vha = base_vha; |
| init_waitqueue_head(&tgt->waitQ); |
| spin_lock_init(&tgt->sess_work_lock); |
| INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); |
| INIT_LIST_HEAD(&tgt->sess_works_list); |
| atomic_set(&tgt->tgt_global_resets_count, 0); |
| |
| base_vha->vha_tgt.qla_tgt = tgt; |
| |
| ql_dbg(ql_dbg_tgt, base_vha, 0xe067, |
| "qla_target(%d): using 64 Bit PCI addressing", |
| base_vha->vp_idx); |
| /* 3 is reserved */ |
| tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); |
| |
| mutex_lock(&qla_tgt_mutex); |
| list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); |
| mutex_unlock(&qla_tgt_mutex); |
| |
| if (ha->tgt.tgt_ops && ha->tgt.tgt_ops->add_target) |
| ha->tgt.tgt_ops->add_target(base_vha); |
| |
| return 0; |
| } |
| |
| /* Must be called under tgt_host_action_mutex */ |
| int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) |
| { |
| if (!vha->vha_tgt.qla_tgt) |
| return 0; |
| |
| if (vha->fc_vport) { |
| qlt_release(vha->vha_tgt.qla_tgt); |
| return 0; |
| } |
| |
| /* free left over qfull cmds */ |
| qlt_init_term_exchange(vha); |
| |
| ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", |
| vha->host_no, ha); |
| qlt_release(vha->vha_tgt.qla_tgt); |
| |
| return 0; |
| } |
| |
| void qla_remove_hostmap(struct qla_hw_data *ha) |
| { |
| struct scsi_qla_host *node; |
| u32 key = 0; |
| |
| btree_for_each_safe32(&ha->host_map, key, node) |
| btree_remove32(&ha->host_map, key); |
| |
| btree_destroy32(&ha->host_map); |
| } |
| |
| static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, |
| unsigned char *b) |
| { |
| pr_debug("qla2xxx HW vha->node_name: %8phC\n", vha->node_name); |
| pr_debug("qla2xxx HW vha->port_name: %8phC\n", vha->port_name); |
| put_unaligned_be64(wwpn, b); |
| pr_debug("qla2xxx passed configfs WWPN: %8phC\n", b); |
| } |
| |
| /** |
| * qlt_lport_register - register lport with external module |
| * |
| * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data |
| * @phys_wwpn: physical port WWPN |
| * @npiv_wwpn: NPIV WWPN |
| * @npiv_wwnn: NPIV WWNN |
| * @callback: lport initialization callback for tcm_qla2xxx code |
| */ |
| int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn, |
| u64 npiv_wwpn, u64 npiv_wwnn, |
| int (*callback)(struct scsi_qla_host *, void *, u64, u64)) |
| { |
| struct qla_tgt *tgt; |
| struct scsi_qla_host *vha; |
| struct qla_hw_data *ha; |
| struct Scsi_Host *host; |
| unsigned long flags; |
| int rc; |
| u8 b[WWN_SIZE]; |
| |
| mutex_lock(&qla_tgt_mutex); |
| list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { |
| vha = tgt->vha; |
| ha = vha->hw; |
| |
| host = vha->host; |
| if (!host) |
| continue; |
| |
| if (!(host->hostt->supported_mode & MODE_TARGET)) |
| continue; |
| |
| if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) |
| continue; |
| |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) { |
| pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", |
| host->host_no); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| continue; |
| } |
| if (tgt->tgt_stop) { |
| pr_debug("MODE_TARGET in shutdown on qla2xxx(%d)\n", |
| host->host_no); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| continue; |
| } |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| if (!scsi_host_get(host)) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe068, |
| "Unable to scsi_host_get() for" |
| " qla2xxx scsi_host\n"); |
| continue; |
| } |
| qlt_lport_dump(vha, phys_wwpn, b); |
| |
| if (memcmp(vha->port_name, b, WWN_SIZE)) { |
| scsi_host_put(host); |
| continue; |
| } |
| rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn); |
| if (rc != 0) |
| scsi_host_put(host); |
| |
| mutex_unlock(&qla_tgt_mutex); |
| return rc; |
| } |
| mutex_unlock(&qla_tgt_mutex); |
| |
| return -ENODEV; |
| } |
| EXPORT_SYMBOL(qlt_lport_register); |
| |
| /** |
| * qlt_lport_deregister - Degister lport |
| * |
| * @vha: Registered scsi_qla_host pointer |
| */ |
| void qlt_lport_deregister(struct scsi_qla_host *vha) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct Scsi_Host *sh = vha->host; |
| /* |
| * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data |
| */ |
| vha->vha_tgt.target_lport_ptr = NULL; |
| ha->tgt.tgt_ops = NULL; |
| /* |
| * Release the Scsi_Host reference for the underlying qla2xxx host |
| */ |
| scsi_host_put(sh); |
| } |
| EXPORT_SYMBOL(qlt_lport_deregister); |
| |
| /* Must be called under HW lock */ |
| void qlt_set_mode(struct scsi_qla_host *vha) |
| { |
| switch (vha->qlini_mode) { |
| case QLA2XXX_INI_MODE_DISABLED: |
| case QLA2XXX_INI_MODE_EXCLUSIVE: |
| vha->host->active_mode = MODE_TARGET; |
| break; |
| case QLA2XXX_INI_MODE_ENABLED: |
| vha->host->active_mode = MODE_INITIATOR; |
| break; |
| case QLA2XXX_INI_MODE_DUAL: |
| vha->host->active_mode = MODE_DUAL; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /* Must be called under HW lock */ |
| static void qlt_clear_mode(struct scsi_qla_host *vha) |
| { |
| switch (vha->qlini_mode) { |
| case QLA2XXX_INI_MODE_DISABLED: |
| vha->host->active_mode = MODE_UNKNOWN; |
| break; |
| case QLA2XXX_INI_MODE_EXCLUSIVE: |
| vha->host->active_mode = MODE_INITIATOR; |
| break; |
| case QLA2XXX_INI_MODE_ENABLED: |
| case QLA2XXX_INI_MODE_DUAL: |
| vha->host->active_mode = MODE_INITIATOR; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /* |
| * qla_tgt_enable_vha - NO LOCK HELD |
| * |
| * host_reset, bring up w/ Target Mode Enabled |
| */ |
| void |
| qlt_enable_vha(struct scsi_qla_host *vha) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| unsigned long flags; |
| scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); |
| |
| if (!tgt) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe069, |
| "Unable to locate qla_tgt pointer from" |
| " struct qla_hw_data\n"); |
| dump_stack(); |
| return; |
| } |
| if (vha->qlini_mode == QLA2XXX_INI_MODE_ENABLED) |
| return; |
| |
| if (ha->tgt.num_act_qpairs > ha->max_qpairs) |
| ha->tgt.num_act_qpairs = ha->max_qpairs; |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| tgt->tgt_stopped = 0; |
| qlt_set_mode(vha); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| mutex_lock(&ha->optrom_mutex); |
| ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, |
| "%s.\n", __func__); |
| if (vha->vp_idx) { |
| qla24xx_disable_vp(vha); |
| qla24xx_enable_vp(vha); |
| } else { |
| set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags); |
| qla2xxx_wake_dpc(base_vha); |
| WARN_ON_ONCE(qla2x00_wait_for_hba_online(base_vha) != |
| QLA_SUCCESS); |
| } |
| mutex_unlock(&ha->optrom_mutex); |
| } |
| EXPORT_SYMBOL(qlt_enable_vha); |
| |
| /* |
| * qla_tgt_disable_vha - NO LOCK HELD |
| * |
| * Disable Target Mode and reset the adapter |
| */ |
| static void qlt_disable_vha(struct scsi_qla_host *vha) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct qla_tgt *tgt = vha->vha_tgt.qla_tgt; |
| unsigned long flags; |
| |
| if (!tgt) { |
| ql_dbg(ql_dbg_tgt, vha, 0xe06a, |
| "Unable to locate qla_tgt pointer from" |
| " struct qla_hw_data\n"); |
| dump_stack(); |
| return; |
| } |
| |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| qlt_clear_mode(vha); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); |
| qla2xxx_wake_dpc(vha); |
| |
| /* |
| * We are expecting the offline state. |
| * QLA_FUNCTION_FAILED means that adapter is offline. |
| */ |
| if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) |
| ql_dbg(ql_dbg_tgt, vha, 0xe081, |
| "adapter is offline\n"); |
| } |
| |
| /* |
| * Called from qla_init.c:qla24xx_vport_create() contex to setup |
| * the target mode specific struct scsi_qla_host and struct qla_hw_data |
| * members. |
| */ |
| void |
| qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) |
| { |
| vha->vha_tgt.qla_tgt = NULL; |
| |
| mutex_init(&vha->vha_tgt.tgt_mutex); |
| mutex_init(&vha->vha_tgt.tgt_host_action_mutex); |
| |
| INIT_LIST_HEAD(&vha->unknown_atio_list); |
| INIT_DELAYED_WORK(&vha->unknown_atio_work, qlt_unknown_atio_work_fn); |
| |
| qlt_clear_mode(vha); |
| |
| /* |
| * NOTE: Currently the value is kept the same for <24xx and |
| * >=24xx ISPs. If it is necessary to change it, |
| * the check should be added for specific ISPs, |
| * assigning the value appropriately. |
| */ |
| ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; |
| |
| qlt_add_target(ha, vha); |
| } |
| |
| u8 |
| qlt_rff_id(struct scsi_qla_host *vha) |
| { |
| u8 fc4_feature = 0; |
| /* |
| * FC-4 Feature bit 0 indicates target functionality to the name server. |
| */ |
| if (qla_tgt_mode_enabled(vha)) { |
| fc4_feature = BIT_0; |
| } else if (qla_ini_mode_enabled(vha)) { |
| fc4_feature = BIT_1; |
| } else if (qla_dual_mode_enabled(vha)) |
| fc4_feature = BIT_0 | BIT_1; |
| |
| return fc4_feature; |
| } |
| |
| /* |
| * qlt_init_atio_q_entries() - Initializes ATIO queue entries. |
| * @ha: HA context |
| * |
| * Beginning of ATIO ring has initialization control block already built |
| * by nvram config routine. |
| * |
| * Returns 0 on success. |
| */ |
| void |
| qlt_init_atio_q_entries(struct scsi_qla_host *vha) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| uint16_t cnt; |
| struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; |
| |
| if (qla_ini_mode_enabled(vha)) |
| return; |
| |
| for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { |
| pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); |
| pkt++; |
| } |
| |
| } |
| |
| /* |
| * qlt_24xx_process_atio_queue() - Process ATIO queue entries. |
| * @ha: SCSI driver HA context |
| */ |
| void |
| qlt_24xx_process_atio_queue(struct scsi_qla_host *vha, uint8_t ha_locked) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct atio_from_isp *pkt; |
| int cnt, i; |
| |
| if (!ha->flags.fw_started) |
| return; |
| |
| while ((ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) || |
| fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr)) { |
| pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; |
| cnt = pkt->u.raw.entry_count; |
| |
| if (unlikely(fcpcmd_is_corrupted(ha->tgt.atio_ring_ptr))) { |
| /* |
| * This packet is corrupted. The header + payload |
| * can not be trusted. There is no point in passing |
| * it further up. |
| */ |
| ql_log(ql_log_warn, vha, 0xd03c, |
| "corrupted fcp frame SID[%3phN] OXID[%04x] EXCG[%x] %64phN\n", |
| &pkt->u.isp24.fcp_hdr.s_id, |
| be16_to_cpu(pkt->u.isp24.fcp_hdr.ox_id), |
| pkt->u.isp24.exchange_addr, pkt); |
| |
| adjust_corrupted_atio(pkt); |
| qlt_send_term_exchange(ha->base_qpair, NULL, pkt, |
| ha_locked, 0); |
| } else { |
| qlt_24xx_atio_pkt_all_vps(vha, |
| (struct atio_from_isp *)pkt, ha_locked); |
| } |
| |
| for (i = 0; i < cnt; i++) { |
| ha->tgt.atio_ring_index++; |
| if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { |
| ha->tgt.atio_ring_index = 0; |
| ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; |
| } else |
| ha->tgt.atio_ring_ptr++; |
| |
| pkt->u.raw.signature = cpu_to_le32(ATIO_PROCESSED); |
| pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; |
| } |
| wmb(); |
| } |
| |
| /* Adjust ring index */ |
| wrt_reg_dword(ISP_ATIO_Q_OUT(vha), ha->tgt.atio_ring_index); |
| } |
| |
| void |
| qlt_24xx_config_rings(struct scsi_qla_host *vha) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct qla_msix_entry *msix = &ha->msix_entries[2]; |
| struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb; |
| |
| if (!QLA_TGT_MODE_ENABLED()) |
| return; |
| |
| wrt_reg_dword(ISP_ATIO_Q_IN(vha), 0); |
| wrt_reg_dword(ISP_ATIO_Q_OUT(vha), 0); |
| rd_reg_dword(ISP_ATIO_Q_OUT(vha)); |
| |
| if (ha->flags.msix_enabled) { |
| if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { |
| icb->msix_atio = cpu_to_le16(msix->entry); |
| icb->firmware_options_2 &= cpu_to_le32(~BIT_26); |
| ql_dbg(ql_dbg_init, vha, 0xf072, |
| "Registering ICB vector 0x%x for atio que.\n", |
| msix->entry); |
| } |
| } else { |
| /* INTx|MSI */ |
| if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { |
| icb->msix_atio = 0; |
| icb->firmware_options_2 |= cpu_to_le32(BIT_26); |
| ql_dbg(ql_dbg_init, vha, 0xf072, |
| "%s: Use INTx for ATIOQ.\n", __func__); |
| } |
| } |
| } |
| |
| void |
| qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| u32 tmp; |
| |
| if (!QLA_TGT_MODE_ENABLED()) |
| return; |
| |
| 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; |
| ha->tgt.saved_firmware_options_1 = |
| nv->firmware_options_1; |
| ha->tgt.saved_firmware_options_2 = |
| nv->firmware_options_2; |
| ha->tgt.saved_firmware_options_3 = |
| nv->firmware_options_3; |
| ha->tgt.saved_set = 1; |
| } |
| |
| if (qla_tgt_mode_enabled(vha)) |
| nv->exchange_count = cpu_to_le16(0xFFFF); |
| else /* dual */ |
| nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); |
| |
| /* Enable target mode */ |
| nv->firmware_options_1 |= cpu_to_le32(BIT_4); |
| |
| /* Disable ini mode, if requested */ |
| if (qla_tgt_mode_enabled(vha)) |
| nv->firmware_options_1 |= cpu_to_le32(BIT_5); |
| |
| /* Disable Full Login after LIP */ |
| nv->firmware_options_1 &= cpu_to_le32(~BIT_13); |
| /* Enable initial LIP */ |
| nv->firmware_options_1 &= cpu_to_le32(~BIT_9); |
| if (ql2xtgt_tape_enable) |
| /* Enable FC Tape support */ |
| nv->firmware_options_2 |= cpu_to_le32(BIT_12); |
| else |
| /* Disable FC Tape support */ |
| nv->firmware_options_2 &= cpu_to_le32(~BIT_12); |
| |
| /* Disable Full Login after LIP */ |
| nv->host_p &= cpu_to_le32(~BIT_10); |
| |
| /* |
| * clear BIT 15 explicitly as we have seen at least |
| * a couple of instances where this was set and this |
| * was causing the firmware to not be initialized. |
| */ |
| nv->firmware_options_1 &= cpu_to_le32(~BIT_15); |
| /* Enable target PRLI control */ |
| nv->firmware_options_2 |= cpu_to_le32(BIT_14); |
| |
| if (IS_QLA25XX(ha)) { |
| /* Change Loop-prefer to Pt-Pt */ |
| tmp = ~(BIT_4|BIT_5|BIT_6); |
| nv->firmware_options_2 &= cpu_to_le32(tmp); |
| tmp = P2P << 4; |
| nv->firmware_options_2 |= cpu_to_le32(tmp); |
| } |
| } else { |
| if (ha->tgt.saved_set) { |
| nv->exchange_count = ha->tgt.saved_exchange_count; |
| nv->firmware_options_1 = |
| ha->tgt.saved_firmware_options_1; |
| nv->firmware_options_2 = |
| ha->tgt.saved_firmware_options_2; |
| nv->firmware_options_3 = |
| ha->tgt.saved_firmware_options_3; |
| } |
| return; |
| } |
| |
| if (ha->base_qpair->enable_class_2) { |
| if (vha->flags.init_done) |
| fc_host_supported_classes(vha->host) = |
| FC_COS_CLASS2 | FC_COS_CLASS3; |
| |
| nv->firmware_options_2 |= cpu_to_le32(BIT_8); |
| } else { |
| if (vha->flags.init_done) |
| fc_host_supported_classes(vha->host) = FC_COS_CLASS3; |
| |
| nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); |
| } |
| } |
| |
| void |
| qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, |
| struct init_cb_24xx *icb) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| |
| if (!QLA_TGT_MODE_ENABLED()) |
| return; |
| |
| if (ha->tgt.node_name_set) { |
| memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); |
| icb->firmware_options_1 |= cpu_to_le32(BIT_14); |
| } |
| } |
| |
| void |
| qlt_81xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_81xx *nv) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| u32 tmp; |
| |
| if (!QLA_TGT_MODE_ENABLED()) |
| return; |
| |
| 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; |
| ha->tgt.saved_firmware_options_1 = |
| nv->firmware_options_1; |
| ha->tgt.saved_firmware_options_2 = |
| nv->firmware_options_2; |
| ha->tgt.saved_firmware_options_3 = |
| nv->firmware_options_3; |
| ha->tgt.saved_set = 1; |
| } |
| |
| if (qla_tgt_mode_enabled(vha)) |
| nv->exchange_count = cpu_to_le16(0xFFFF); |
| else /* dual */ |
| nv->exchange_count = cpu_to_le16(vha->ql2xexchoffld); |
| |
| /* Enable target mode */ |
| nv->firmware_options_1 |= cpu_to_le32(BIT_4); |
| |
| /* Disable ini mode, if requested */ |
| if (qla_tgt_mode_enabled(vha)) |
| nv->firmware_options_1 |= cpu_to_le32(BIT_5); |
| /* Disable Full Login after LIP */ |
| nv->firmware_options_1 &= cpu_to_le32(~BIT_13); |
| /* Enable initial LIP */ |
| nv->firmware_options_1 &= cpu_to_le32(~BIT_9); |
| /* |
| * clear BIT 15 explicitly as we have seen at |
| * least a couple of instances where this was set |
| * and this was causing the firmware to not be |
| * initialized. |
| */ |
| nv->firmware_options_1 &= cpu_to_le32(~BIT_15); |
| if (ql2xtgt_tape_enable) |
| /* Enable FC tape support */ |
| nv->firmware_options_2 |= cpu_to_le32(BIT_12); |
| else |
| /* Disable FC tape support */ |
| nv->firmware_options_2 &= cpu_to_le32(~BIT_12); |
| |
| /* Disable Full Login after LIP */ |
| nv->host_p &= cpu_to_le32(~BIT_10); |
| /* Enable target PRLI control */ |
| nv->firmware_options_2 |= cpu_to_le32(BIT_14); |
| |
| /* Change Loop-prefer to Pt-Pt */ |
| tmp = ~(BIT_4|BIT_5|BIT_6); |
| nv->firmware_options_2 &= cpu_to_le32(tmp); |
| tmp = P2P << 4; |
| nv->firmware_options_2 |= cpu_to_le32(tmp); |
| } else { |
| if (ha->tgt.saved_set) { |
| nv->exchange_count = ha->tgt.saved_exchange_count; |
| nv->firmware_options_1 = |
| ha->tgt.saved_firmware_options_1; |
| nv->firmware_options_2 = |
| ha->tgt.saved_firmware_options_2; |
| nv->firmware_options_3 = |
| ha->tgt.saved_firmware_options_3; |
| } |
| return; |
| } |
| |
| if (ha->base_qpair->enable_class_2) { |
| if (vha->flags.init_done) |
| fc_host_supported_classes(vha->host) = |
| FC_COS_CLASS2 | FC_COS_CLASS3; |
| |
| nv->firmware_options_2 |= cpu_to_le32(BIT_8); |
| } else { |
| if (vha->flags.init_done) |
| fc_host_supported_classes(vha->host) = FC_COS_CLASS3; |
| |
| nv->firmware_options_2 &= ~cpu_to_le32(BIT_8); |
| } |
| } |
| |
| void |
| qlt_81xx_config_nvram_stage2(struct scsi_qla_host *vha, |
| struct init_cb_81xx *icb) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| |
| if (!QLA_TGT_MODE_ENABLED()) |
| return; |
| |
| if (ha->tgt.node_name_set) { |
| memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); |
| icb->firmware_options_1 |= cpu_to_le32(BIT_14); |
| } |
| } |
| |
| void |
| qlt_83xx_iospace_config(struct qla_hw_data *ha) |
| { |
| if (!QLA_TGT_MODE_ENABLED()) |
| return; |
| |
| ha->msix_count += 1; /* For ATIO Q */ |
| } |
| |
| |
| void |
| qlt_modify_vp_config(struct scsi_qla_host *vha, |
| struct vp_config_entry_24xx *vpmod) |
| { |
| /* 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. bit4 = 1 => disable */ |
| if (qla_tgt_mode_enabled(vha)) |
| vpmod->options_idx1 &= ~BIT_4; |
| } |
| |
| void |
| qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) |
| { |
| mutex_init(&base_vha->vha_tgt.tgt_mutex); |
| if (!QLA_TGT_MODE_ENABLED()) |
| return; |
| |
| if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) { |
| ISP_ATIO_Q_IN(base_vha) = &ha->mqiobase->isp25mq.atio_q_in; |
| ISP_ATIO_Q_OUT(base_vha) = &ha->mqiobase->isp25mq.atio_q_out; |
| } else { |
| ISP_ATIO_Q_IN(base_vha) = &ha->iobase->isp24.atio_q_in; |
| ISP_ATIO_Q_OUT(base_vha) = &ha->iobase->isp24.atio_q_out; |
| } |
| |
| mutex_init(&base_vha->vha_tgt.tgt_host_action_mutex); |
| |
| INIT_LIST_HEAD(&base_vha->unknown_atio_list); |
| INIT_DELAYED_WORK(&base_vha->unknown_atio_work, |
| qlt_unknown_atio_work_fn); |
| |
| qlt_clear_mode(base_vha); |
| |
| qla_update_vp_map(base_vha, SET_VP_IDX); |
| } |
| |
| irqreturn_t |
| qla83xx_msix_atio_q(int irq, void *dev_id) |
| { |
| struct rsp_que *rsp; |
| scsi_qla_host_t *vha; |
| struct qla_hw_data *ha; |
| unsigned long flags; |
| |
| rsp = (struct rsp_que *) dev_id; |
| ha = rsp->hw; |
| vha = pci_get_drvdata(ha->pdev); |
| |
| spin_lock_irqsave(&ha->tgt.atio_lock, flags); |
| |
| qlt_24xx_process_atio_queue(vha, 0); |
| |
| spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static void |
| qlt_handle_abts_recv_work(struct work_struct *work) |
| { |
| struct qla_tgt_sess_op *op = container_of(work, |
| struct qla_tgt_sess_op, work); |
| scsi_qla_host_t *vha = op->vha; |
| struct qla_hw_data *ha = vha->hw; |
| unsigned long flags; |
| |
| if (qla2x00_reset_active(vha) || |
| (op->chip_reset != ha->base_qpair->chip_reset)) |
| return; |
| |
| spin_lock_irqsave(&ha->tgt.atio_lock, flags); |
| qlt_24xx_process_atio_queue(vha, 0); |
| spin_unlock_irqrestore(&ha->tgt.atio_lock, flags); |
| |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| qlt_response_pkt_all_vps(vha, op->rsp, (response_t *)&op->atio); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| |
| kfree(op); |
| } |
| |
| void |
| qlt_handle_abts_recv(struct scsi_qla_host *vha, struct rsp_que *rsp, |
| response_t *pkt) |
| { |
| struct qla_tgt_sess_op *op; |
| |
| op = kzalloc(sizeof(*op), GFP_ATOMIC); |
| |
| if (!op) { |
| /* do not reach for ATIO queue here. This is best effort err |
| * recovery at this point. |
| */ |
| qlt_response_pkt_all_vps(vha, rsp, pkt); |
| return; |
| } |
| |
| memcpy(&op->atio, pkt, sizeof(*pkt)); |
| op->vha = vha; |
| op->chip_reset = vha->hw->base_qpair->chip_reset; |
| op->rsp = rsp; |
| INIT_WORK(&op->work, qlt_handle_abts_recv_work); |
| queue_work(qla_tgt_wq, &op->work); |
| return; |
| } |
| |
| int |
| qlt_mem_alloc(struct qla_hw_data *ha) |
| { |
| if (!QLA_TGT_MODE_ENABLED()) |
| return 0; |
| |
| ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, |
| (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), |
| &ha->tgt.atio_dma, GFP_KERNEL); |
| if (!ha->tgt.atio_ring) { |
| return -ENOMEM; |
| } |
| return 0; |
| } |
| |
| void |
| qlt_mem_free(struct qla_hw_data *ha) |
| { |
| if (!QLA_TGT_MODE_ENABLED()) |
| return; |
| |
| if (ha->tgt.atio_ring) { |
| dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * |
| sizeof(struct atio_from_isp), ha->tgt.atio_ring, |
| ha->tgt.atio_dma); |
| } |
| ha->tgt.atio_ring = NULL; |
| ha->tgt.atio_dma = 0; |
| } |
| |
| static int __init qlt_parse_ini_mode(void) |
| { |
| if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) |
| ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; |
| else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) |
| 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; |
| |
| return true; |
| } |
| |
| int __init qlt_init(void) |
| { |
| int ret; |
| |
| BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); |
| BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); |
| |
| if (!qlt_parse_ini_mode()) { |
| ql_log(ql_log_fatal, NULL, 0xe06b, |
| "qlt_parse_ini_mode() failed\n"); |
| return -EINVAL; |
| } |
| |
| if (!QLA_TGT_MODE_ENABLED()) |
| return 0; |
| |
| qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", |
| sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct |
| qla_tgt_mgmt_cmd), 0, NULL); |
| if (!qla_tgt_mgmt_cmd_cachep) { |
| ql_log(ql_log_fatal, NULL, 0xd04b, |
| "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); |
| return -ENOMEM; |
| } |
| |
| qla_tgt_plogi_cachep = kmem_cache_create("qla_tgt_plogi_cachep", |
| sizeof(struct qlt_plogi_ack_t), __alignof__(struct qlt_plogi_ack_t), |
| 0, NULL); |
| |
| if (!qla_tgt_plogi_cachep) { |
| ql_log(ql_log_fatal, NULL, 0xe06d, |
| "kmem_cache_create for qla_tgt_plogi_cachep failed\n"); |
| ret = -ENOMEM; |
| goto out_mgmt_cmd_cachep; |
| } |
| |
| qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, |
| mempool_free_slab, qla_tgt_mgmt_cmd_cachep); |
| if (!qla_tgt_mgmt_cmd_mempool) { |
| ql_log(ql_log_fatal, NULL, 0xe06e, |
| "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); |
| ret = -ENOMEM; |
| goto out_plogi_cachep; |
| } |
| |
| qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); |
| if (!qla_tgt_wq) { |
| ql_log(ql_log_fatal, NULL, 0xe06f, |
| "alloc_workqueue for qla_tgt_wq failed\n"); |
| ret = -ENOMEM; |
| goto out_cmd_mempool; |
| } |
| /* |
| * Return 1 to signal that initiator-mode is being disabled |
| */ |
| return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; |
| |
| out_cmd_mempool: |
| mempool_destroy(qla_tgt_mgmt_cmd_mempool); |
| out_plogi_cachep: |
| kmem_cache_destroy(qla_tgt_plogi_cachep); |
| out_mgmt_cmd_cachep: |
| kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); |
| return ret; |
| } |
| |
| void qlt_exit(void) |
| { |
| if (!QLA_TGT_MODE_ENABLED()) |
| return; |
| |
| destroy_workqueue(qla_tgt_wq); |
| mempool_destroy(qla_tgt_mgmt_cmd_mempool); |
| kmem_cache_destroy(qla_tgt_plogi_cachep); |
| kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); |
| } |