![Arun Easi](/assets/img/avatar_default.png)
Signed-off-by: Arun Easi <arun.easi@qlogic.com> Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
5113 lines
139 KiB
C
5113 lines
139 KiB
C
/*
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* qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
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*
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* based on qla2x00t.c code:
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*
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* Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
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* Copyright (C) 2004 - 2005 Leonid Stoljar
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* Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
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* Copyright (C) 2006 - 2010 ID7 Ltd.
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*
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* Forward port and refactoring to modern qla2xxx and target/configfs
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*
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* Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2
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* of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/blkdev.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/list.h>
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#include <linux/workqueue.h>
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#include <asm/unaligned.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_tcq.h>
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#include <target/target_core_base.h>
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#include <target/target_core_fabric.h>
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#include "qla_def.h"
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#include "qla_target.h"
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static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
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module_param(qlini_mode, charp, S_IRUGO);
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MODULE_PARM_DESC(qlini_mode,
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"Determines when initiator mode will be enabled. Possible values: "
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"\"exclusive\" - initiator mode will be enabled on load, "
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"disabled on enabling target mode and then on disabling target mode "
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"enabled back; "
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"\"disabled\" - initiator mode will never be enabled; "
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"\"enabled\" (default) - initiator mode will always stay enabled.");
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int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
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/*
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* From scsi/fc/fc_fcp.h
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*/
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enum fcp_resp_rsp_codes {
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FCP_TMF_CMPL = 0,
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FCP_DATA_LEN_INVALID = 1,
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FCP_CMND_FIELDS_INVALID = 2,
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FCP_DATA_PARAM_MISMATCH = 3,
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FCP_TMF_REJECTED = 4,
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FCP_TMF_FAILED = 5,
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FCP_TMF_INVALID_LUN = 9,
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};
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/*
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* fc_pri_ta from scsi/fc/fc_fcp.h
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*/
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#define FCP_PTA_SIMPLE 0 /* simple task attribute */
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#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
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#define FCP_PTA_ORDERED 2 /* ordered task attribute */
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#define FCP_PTA_ACA 4 /* auto. contingent allegiance */
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#define FCP_PTA_MASK 7 /* mask for task attribute field */
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#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
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#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
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/*
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* This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which
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* must be called under HW lock and could unlock/lock it inside.
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* It isn't an issue, since in the current implementation on the time when
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* those functions are called:
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*
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* - Either context is IRQ and only IRQ handler can modify HW data,
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* including rings related fields,
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*
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* - Or access to target mode variables from struct qla_tgt doesn't
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* cross those functions boundaries, except tgt_stop, which
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* additionally protected by irq_cmd_count.
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*/
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/* Predefs for callbacks handed to qla2xxx LLD */
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static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha,
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struct atio_from_isp *pkt);
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static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
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static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
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int fn, void *iocb, int flags);
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static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd
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*cmd, struct atio_from_isp *atio, int ha_locked);
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static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha,
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struct qla_tgt_srr_imm *imm, int ha_lock);
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/*
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* Global Variables
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*/
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static struct kmem_cache *qla_tgt_cmd_cachep;
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static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
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static mempool_t *qla_tgt_mgmt_cmd_mempool;
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static struct workqueue_struct *qla_tgt_wq;
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static DEFINE_MUTEX(qla_tgt_mutex);
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static LIST_HEAD(qla_tgt_glist);
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/* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
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static struct qla_tgt_sess *qlt_find_sess_by_port_name(
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struct qla_tgt *tgt,
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const uint8_t *port_name)
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{
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struct qla_tgt_sess *sess;
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list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
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if (!memcmp(sess->port_name, port_name, WWN_SIZE))
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return sess;
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}
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return NULL;
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}
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/* Might release hw lock, then reaquire!! */
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static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
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{
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/* Send marker if required */
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if (unlikely(vha->marker_needed != 0)) {
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int rc = qla2x00_issue_marker(vha, vha_locked);
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if (rc != QLA_SUCCESS) {
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ql_dbg(ql_dbg_tgt, vha, 0xe03d,
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"qla_target(%d): issue_marker() failed\n",
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vha->vp_idx);
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}
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return rc;
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}
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return QLA_SUCCESS;
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}
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static inline
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struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha,
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uint8_t *d_id)
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{
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struct qla_hw_data *ha = vha->hw;
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uint8_t vp_idx;
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if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
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return NULL;
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if (vha->d_id.b.al_pa == d_id[2])
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return vha;
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BUG_ON(ha->tgt.tgt_vp_map == NULL);
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vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx;
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if (likely(test_bit(vp_idx, ha->vp_idx_map)))
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return ha->tgt.tgt_vp_map[vp_idx].vha;
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return NULL;
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}
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static inline
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struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha,
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uint16_t vp_idx)
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{
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struct qla_hw_data *ha = vha->hw;
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if (vha->vp_idx == vp_idx)
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return vha;
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BUG_ON(ha->tgt.tgt_vp_map == NULL);
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if (likely(test_bit(vp_idx, ha->vp_idx_map)))
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return ha->tgt.tgt_vp_map[vp_idx].vha;
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return NULL;
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}
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void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha,
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struct atio_from_isp *atio)
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{
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switch (atio->u.raw.entry_type) {
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case ATIO_TYPE7:
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{
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struct scsi_qla_host *host = qlt_find_host_by_d_id(vha,
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atio->u.isp24.fcp_hdr.d_id);
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if (unlikely(NULL == host)) {
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ql_dbg(ql_dbg_tgt, vha, 0xe03e,
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"qla_target(%d): Received ATIO_TYPE7 "
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"with unknown d_id %x:%x:%x\n", vha->vp_idx,
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atio->u.isp24.fcp_hdr.d_id[0],
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atio->u.isp24.fcp_hdr.d_id[1],
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atio->u.isp24.fcp_hdr.d_id[2]);
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break;
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}
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qlt_24xx_atio_pkt(host, atio);
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break;
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}
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case IMMED_NOTIFY_TYPE:
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{
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struct scsi_qla_host *host = vha;
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struct imm_ntfy_from_isp *entry =
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(struct imm_ntfy_from_isp *)atio;
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if ((entry->u.isp24.vp_index != 0xFF) &&
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(entry->u.isp24.nport_handle != 0xFFFF)) {
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host = qlt_find_host_by_vp_idx(vha,
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entry->u.isp24.vp_index);
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if (unlikely(!host)) {
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ql_dbg(ql_dbg_tgt, vha, 0xe03f,
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"qla_target(%d): Received "
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"ATIO (IMMED_NOTIFY_TYPE) "
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"with unknown vp_index %d\n",
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vha->vp_idx, entry->u.isp24.vp_index);
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break;
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}
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}
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qlt_24xx_atio_pkt(host, atio);
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break;
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}
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default:
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ql_dbg(ql_dbg_tgt, vha, 0xe040,
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"qla_target(%d): Received unknown ATIO atio "
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"type %x\n", vha->vp_idx, atio->u.raw.entry_type);
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break;
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}
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return;
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}
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void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
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{
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switch (pkt->entry_type) {
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case CTIO_TYPE7:
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{
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struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
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struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
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entry->vp_index);
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if (unlikely(!host)) {
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ql_dbg(ql_dbg_tgt, vha, 0xe041,
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"qla_target(%d): Response pkt (CTIO_TYPE7) "
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"received, with unknown vp_index %d\n",
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vha->vp_idx, entry->vp_index);
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break;
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}
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qlt_response_pkt(host, pkt);
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break;
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}
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case IMMED_NOTIFY_TYPE:
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{
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struct scsi_qla_host *host = vha;
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struct imm_ntfy_from_isp *entry =
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(struct imm_ntfy_from_isp *)pkt;
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host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index);
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if (unlikely(!host)) {
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ql_dbg(ql_dbg_tgt, vha, 0xe042,
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"qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) "
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"received, with unknown vp_index %d\n",
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vha->vp_idx, entry->u.isp24.vp_index);
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break;
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}
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qlt_response_pkt(host, pkt);
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break;
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}
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case NOTIFY_ACK_TYPE:
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{
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struct scsi_qla_host *host = vha;
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struct nack_to_isp *entry = (struct nack_to_isp *)pkt;
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if (0xFF != entry->u.isp24.vp_index) {
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host = qlt_find_host_by_vp_idx(vha,
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entry->u.isp24.vp_index);
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if (unlikely(!host)) {
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ql_dbg(ql_dbg_tgt, vha, 0xe043,
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"qla_target(%d): Response "
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"pkt (NOTIFY_ACK_TYPE) "
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"received, with unknown "
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"vp_index %d\n", vha->vp_idx,
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entry->u.isp24.vp_index);
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break;
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}
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}
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qlt_response_pkt(host, pkt);
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break;
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}
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case ABTS_RECV_24XX:
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{
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struct abts_recv_from_24xx *entry =
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(struct abts_recv_from_24xx *)pkt;
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struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
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entry->vp_index);
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if (unlikely(!host)) {
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ql_dbg(ql_dbg_tgt, vha, 0xe044,
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"qla_target(%d): Response pkt "
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"(ABTS_RECV_24XX) received, with unknown "
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"vp_index %d\n", vha->vp_idx, entry->vp_index);
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break;
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}
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qlt_response_pkt(host, pkt);
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break;
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}
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case ABTS_RESP_24XX:
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{
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struct abts_resp_to_24xx *entry =
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(struct abts_resp_to_24xx *)pkt;
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struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha,
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entry->vp_index);
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if (unlikely(!host)) {
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ql_dbg(ql_dbg_tgt, vha, 0xe045,
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"qla_target(%d): Response pkt "
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"(ABTS_RECV_24XX) received, with unknown "
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"vp_index %d\n", vha->vp_idx, entry->vp_index);
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break;
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}
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qlt_response_pkt(host, pkt);
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break;
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}
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default:
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qlt_response_pkt(vha, pkt);
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break;
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}
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}
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static void qlt_free_session_done(struct work_struct *work)
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{
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struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
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free_work);
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struct qla_tgt *tgt = sess->tgt;
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struct scsi_qla_host *vha = sess->vha;
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struct qla_hw_data *ha = vha->hw;
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BUG_ON(!tgt);
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/*
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* Release the target session for FC Nexus from fabric module code.
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*/
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if (sess->se_sess != NULL)
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ha->tgt.tgt_ops->free_session(sess);
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001,
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"Unregistration of sess %p finished\n", sess);
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kfree(sess);
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/*
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* We need to protect against race, when tgt is freed before or
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* inside wake_up()
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*/
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tgt->sess_count--;
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if (tgt->sess_count == 0)
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wake_up_all(&tgt->waitQ);
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}
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/* ha->hardware_lock supposed to be held on entry */
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void qlt_unreg_sess(struct qla_tgt_sess *sess)
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{
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struct scsi_qla_host *vha = sess->vha;
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vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess);
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list_del(&sess->sess_list_entry);
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if (sess->deleted)
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list_del(&sess->del_list_entry);
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INIT_WORK(&sess->free_work, qlt_free_session_done);
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schedule_work(&sess->free_work);
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}
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EXPORT_SYMBOL(qlt_unreg_sess);
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/* ha->hardware_lock supposed to be held on entry */
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static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
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{
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struct qla_hw_data *ha = vha->hw;
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struct qla_tgt_sess *sess = NULL;
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uint32_t unpacked_lun, lun = 0;
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uint16_t loop_id;
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int res = 0;
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struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb;
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struct atio_from_isp *a = (struct atio_from_isp *)iocb;
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loop_id = le16_to_cpu(n->u.isp24.nport_handle);
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if (loop_id == 0xFFFF) {
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#if 0 /* FIXME: Re-enable Global event handling.. */
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/* Global event */
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atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count);
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qlt_clear_tgt_db(ha->tgt.qla_tgt, 1);
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if (!list_empty(&ha->tgt.qla_tgt->sess_list)) {
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sess = list_entry(ha->tgt.qla_tgt->sess_list.next,
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typeof(*sess), sess_list_entry);
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switch (mcmd) {
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case QLA_TGT_NEXUS_LOSS_SESS:
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mcmd = QLA_TGT_NEXUS_LOSS;
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break;
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case QLA_TGT_ABORT_ALL_SESS:
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mcmd = QLA_TGT_ABORT_ALL;
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break;
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case QLA_TGT_NEXUS_LOSS:
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case QLA_TGT_ABORT_ALL:
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break;
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default:
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ql_dbg(ql_dbg_tgt, vha, 0xe046,
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"qla_target(%d): Not allowed "
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"command %x in %s", vha->vp_idx,
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mcmd, __func__);
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sess = NULL;
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break;
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}
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} else
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sess = NULL;
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#endif
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} else {
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sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
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}
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ql_dbg(ql_dbg_tgt, vha, 0xe000,
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"Using sess for qla_tgt_reset: %p\n", sess);
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if (!sess) {
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res = -ESRCH;
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return res;
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}
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|
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ql_dbg(ql_dbg_tgt, vha, 0xe047,
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"scsi(%ld): resetting (session %p from port "
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"%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x, "
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"mcmd %x, loop_id %d)\n", vha->host_no, sess,
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sess->port_name[0], sess->port_name[1],
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sess->port_name[2], sess->port_name[3],
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sess->port_name[4], sess->port_name[5],
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sess->port_name[6], sess->port_name[7],
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mcmd, loop_id);
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lun = a->u.isp24.fcp_cmnd.lun;
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unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
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return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd,
|
|
iocb, QLA24XX_MGMT_SEND_NACK);
|
|
}
|
|
|
|
/* ha->hardware_lock supposed to be held on entry */
|
|
static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess,
|
|
bool immediate)
|
|
{
|
|
struct qla_tgt *tgt = sess->tgt;
|
|
uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
|
|
|
|
if (sess->deleted)
|
|
return;
|
|
|
|
ql_dbg(ql_dbg_tgt, sess->vha, 0xe001,
|
|
"Scheduling sess %p for deletion\n", sess);
|
|
list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
|
|
sess->deleted = 1;
|
|
|
|
if (immediate)
|
|
dev_loss_tmo = 0;
|
|
|
|
sess->expires = jiffies + dev_loss_tmo * HZ;
|
|
|
|
ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
|
|
"qla_target(%d): session for port %02x:%02x:%02x:"
|
|
"%02x:%02x:%02x:%02x:%02x (loop ID %d) scheduled for "
|
|
"deletion in %u secs (expires: %lu) immed: %d\n",
|
|
sess->vha->vp_idx,
|
|
sess->port_name[0], sess->port_name[1],
|
|
sess->port_name[2], sess->port_name[3],
|
|
sess->port_name[4], sess->port_name[5],
|
|
sess->port_name[6], sess->port_name[7],
|
|
sess->loop_id, dev_loss_tmo, sess->expires, immediate);
|
|
|
|
if (immediate)
|
|
schedule_delayed_work(&tgt->sess_del_work, 0);
|
|
else
|
|
schedule_delayed_work(&tgt->sess_del_work,
|
|
jiffies - sess->expires);
|
|
}
|
|
|
|
/* ha->hardware_lock supposed to be held on entry */
|
|
static void qlt_clear_tgt_db(struct qla_tgt *tgt, bool local_only)
|
|
{
|
|
struct qla_tgt_sess *sess;
|
|
|
|
list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
|
|
qlt_schedule_sess_for_deletion(sess, true);
|
|
|
|
/* At this point tgt could be already dead */
|
|
}
|
|
|
|
static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_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;
|
|
char *id_iter;
|
|
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 = qla2x00_get_id_list(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 = -1;
|
|
goto out_free_id_list;
|
|
}
|
|
|
|
id_iter = (char *)gid_list;
|
|
res = -1;
|
|
for (i = 0; i < entries; i++) {
|
|
struct gid_list_info *gid = (struct gid_list_info *)id_iter;
|
|
if ((gid->al_pa == s_id[2]) &&
|
|
(gid->area == s_id[1]) &&
|
|
(gid->domain == s_id[0])) {
|
|
*loop_id = le16_to_cpu(gid->loop_id);
|
|
res = 0;
|
|
break;
|
|
}
|
|
id_iter += 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;
|
|
}
|
|
|
|
static bool qlt_check_fcport_exist(struct scsi_qla_host *vha,
|
|
struct qla_tgt_sess *sess)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_port_24xx_data *pmap24;
|
|
bool res, found = false;
|
|
int rc, i;
|
|
uint16_t loop_id = 0xFFFF; /* to eliminate compiler's warning */
|
|
uint16_t entries;
|
|
void *pmap;
|
|
int pmap_len;
|
|
fc_port_t *fcport;
|
|
int global_resets;
|
|
unsigned long flags;
|
|
|
|
retry:
|
|
global_resets = atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count);
|
|
|
|
rc = qla2x00_get_node_name_list(vha, &pmap, &pmap_len);
|
|
if (rc != QLA_SUCCESS) {
|
|
res = false;
|
|
goto out;
|
|
}
|
|
|
|
pmap24 = pmap;
|
|
entries = pmap_len/sizeof(*pmap24);
|
|
|
|
for (i = 0; i < entries; ++i) {
|
|
if (!memcmp(sess->port_name, pmap24[i].port_name, WWN_SIZE)) {
|
|
loop_id = le16_to_cpu(pmap24[i].loop_id);
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
kfree(pmap);
|
|
|
|
if (!found) {
|
|
res = false;
|
|
goto out;
|
|
}
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf046,
|
|
"qlt_check_fcport_exist(): loop_id %d", loop_id);
|
|
|
|
fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
|
|
if (fcport == NULL) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf047,
|
|
"qla_target(%d): Allocation of tmp FC port failed",
|
|
vha->vp_idx);
|
|
res = false;
|
|
goto out;
|
|
}
|
|
|
|
fcport->loop_id = loop_id;
|
|
|
|
rc = qla2x00_get_port_database(vha, fcport, 0);
|
|
if (rc != QLA_SUCCESS) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf048,
|
|
"qla_target(%d): Failed to retrieve fcport "
|
|
"information -- get_port_database() returned %x "
|
|
"(loop_id=0x%04x)", vha->vp_idx, rc, loop_id);
|
|
res = false;
|
|
goto out_free_fcport;
|
|
}
|
|
|
|
if (global_resets !=
|
|
atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002,
|
|
"qla_target(%d): global reset during session discovery"
|
|
" (counter was %d, new %d), retrying",
|
|
vha->vp_idx, global_resets,
|
|
atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count));
|
|
goto retry;
|
|
}
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
|
|
"Updating sess %p s_id %x:%x:%x, loop_id %d) to d_id %x:%x:%x, "
|
|
"loop_id %d", sess, sess->s_id.b.domain, sess->s_id.b.al_pa,
|
|
sess->s_id.b.area, sess->loop_id, fcport->d_id.b.domain,
|
|
fcport->d_id.b.al_pa, fcport->d_id.b.area, fcport->loop_id);
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
|
|
(fcport->flags & FCF_CONF_COMP_SUPPORTED));
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
res = true;
|
|
|
|
out_free_fcport:
|
|
kfree(fcport);
|
|
|
|
out:
|
|
return res;
|
|
}
|
|
|
|
/* ha->hardware_lock supposed to be held on entry */
|
|
static void qlt_undelete_sess(struct qla_tgt_sess *sess)
|
|
{
|
|
BUG_ON(!sess->deleted);
|
|
|
|
list_del(&sess->del_list_entry);
|
|
sess->deleted = 0;
|
|
}
|
|
|
|
static void qlt_del_sess_work_fn(struct delayed_work *work)
|
|
{
|
|
struct qla_tgt *tgt = container_of(work, struct qla_tgt,
|
|
sess_del_work);
|
|
struct scsi_qla_host *vha = tgt->vha;
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt_sess *sess;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
while (!list_empty(&tgt->del_sess_list)) {
|
|
sess = list_entry(tgt->del_sess_list.next, typeof(*sess),
|
|
del_list_entry);
|
|
if (time_after_eq(jiffies, sess->expires)) {
|
|
bool cancel;
|
|
|
|
qlt_undelete_sess(sess);
|
|
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
cancel = qlt_check_fcport_exist(vha, sess);
|
|
|
|
if (cancel) {
|
|
if (sess->deleted) {
|
|
/*
|
|
* sess was again deleted while we were
|
|
* discovering it
|
|
*/
|
|
spin_lock_irqsave(&ha->hardware_lock,
|
|
flags);
|
|
continue;
|
|
}
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf049,
|
|
"qla_target(%d): cancel deletion of "
|
|
"session for port %02x:%02x:%02x:%02x:%02x:"
|
|
"%02x:%02x:%02x (loop ID %d), because "
|
|
" it isn't deleted by firmware",
|
|
vha->vp_idx, sess->port_name[0],
|
|
sess->port_name[1], sess->port_name[2],
|
|
sess->port_name[3], sess->port_name[4],
|
|
sess->port_name[5], sess->port_name[6],
|
|
sess->port_name[7], sess->loop_id);
|
|
} else {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004,
|
|
"Timeout: sess %p about to be deleted\n",
|
|
sess);
|
|
ha->tgt.tgt_ops->shutdown_sess(sess);
|
|
ha->tgt.tgt_ops->put_sess(sess);
|
|
}
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
} else {
|
|
schedule_delayed_work(&tgt->sess_del_work,
|
|
jiffies - sess->expires);
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
}
|
|
|
|
/*
|
|
* Adds an extra ref to allow to drop hw lock after adding sess to the list.
|
|
* Caller must put it.
|
|
*/
|
|
static struct qla_tgt_sess *qlt_create_sess(
|
|
struct scsi_qla_host *vha,
|
|
fc_port_t *fcport,
|
|
bool local)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt_sess *sess;
|
|
unsigned long flags;
|
|
unsigned char be_sid[3];
|
|
|
|
/* Check to avoid double sessions */
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
list_for_each_entry(sess, &ha->tgt.qla_tgt->sess_list,
|
|
sess_list_entry) {
|
|
if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005,
|
|
"Double sess %p found (s_id %x:%x:%x, "
|
|
"loop_id %d), updating to d_id %x:%x:%x, "
|
|
"loop_id %d", sess, sess->s_id.b.domain,
|
|
sess->s_id.b.al_pa, sess->s_id.b.area,
|
|
sess->loop_id, fcport->d_id.b.domain,
|
|
fcport->d_id.b.al_pa, fcport->d_id.b.area,
|
|
fcport->loop_id);
|
|
|
|
if (sess->deleted)
|
|
qlt_undelete_sess(sess);
|
|
|
|
kref_get(&sess->se_sess->sess_kref);
|
|
ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id,
|
|
(fcport->flags & FCF_CONF_COMP_SUPPORTED));
|
|
|
|
if (sess->local && !local)
|
|
sess->local = 0;
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
return sess;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
sess = kzalloc(sizeof(*sess), GFP_KERNEL);
|
|
if (!sess) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
|
|
"qla_target(%u): session allocation failed, "
|
|
"all commands from port %02x:%02x:%02x:%02x:"
|
|
"%02x:%02x:%02x:%02x will be refused", vha->vp_idx,
|
|
fcport->port_name[0], fcport->port_name[1],
|
|
fcport->port_name[2], fcport->port_name[3],
|
|
fcport->port_name[4], fcport->port_name[5],
|
|
fcport->port_name[6], fcport->port_name[7]);
|
|
|
|
return NULL;
|
|
}
|
|
sess->tgt = ha->tgt.qla_tgt;
|
|
sess->vha = vha;
|
|
sess->s_id = fcport->d_id;
|
|
sess->loop_id = fcport->loop_id;
|
|
sess->local = local;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006,
|
|
"Adding sess %p to tgt %p via ->check_initiator_node_acl()\n",
|
|
sess, ha->tgt.qla_tgt);
|
|
|
|
be_sid[0] = sess->s_id.b.domain;
|
|
be_sid[1] = sess->s_id.b.area;
|
|
be_sid[2] = sess->s_id.b.al_pa;
|
|
/*
|
|
* Determine if this fc_port->port_name is allowed to access
|
|
* target mode using explict NodeACLs+MappedLUNs, or using
|
|
* TPG demo mode. If this is successful a target mode FC nexus
|
|
* is created.
|
|
*/
|
|
if (ha->tgt.tgt_ops->check_initiator_node_acl(vha,
|
|
&fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) {
|
|
kfree(sess);
|
|
return NULL;
|
|
}
|
|
/*
|
|
* Take an extra reference to ->sess_kref here to handle qla_tgt_sess
|
|
* access across ->hardware_lock reaquire.
|
|
*/
|
|
kref_get(&sess->se_sess->sess_kref);
|
|
|
|
sess->conf_compl_supported = (fcport->flags & FCF_CONF_COMP_SUPPORTED);
|
|
BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name));
|
|
memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name));
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
list_add_tail(&sess->sess_list_entry, &ha->tgt.qla_tgt->sess_list);
|
|
ha->tgt.qla_tgt->sess_count++;
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
|
|
"qla_target(%d): %ssession for wwn %02x:%02x:%02x:%02x:"
|
|
"%02x:%02x:%02x:%02x (loop_id %d, s_id %x:%x:%x, confirmed"
|
|
" completion %ssupported) added\n",
|
|
vha->vp_idx, local ? "local " : "", fcport->port_name[0],
|
|
fcport->port_name[1], fcport->port_name[2], fcport->port_name[3],
|
|
fcport->port_name[4], fcport->port_name[5], fcport->port_name[6],
|
|
fcport->port_name[7], fcport->loop_id, sess->s_id.b.domain,
|
|
sess->s_id.b.area, sess->s_id.b.al_pa, sess->conf_compl_supported ?
|
|
"" : "not ");
|
|
|
|
return sess;
|
|
}
|
|
|
|
/*
|
|
* Called from drivers/scsi/qla2xxx/qla_init.c: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 = ha->tgt.qla_tgt;
|
|
struct qla_tgt_sess *sess;
|
|
unsigned long flags;
|
|
|
|
if (!vha->hw->tgt.tgt_ops)
|
|
return;
|
|
|
|
if (!tgt || (fcport->port_type != FCT_INITIATOR))
|
|
return;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
if (tgt->tgt_stop) {
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
return;
|
|
}
|
|
sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
|
|
if (!sess) {
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
mutex_lock(&ha->tgt.tgt_mutex);
|
|
sess = qlt_create_sess(vha, fcport, false);
|
|
mutex_unlock(&ha->tgt.tgt_mutex);
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
} else {
|
|
kref_get(&sess->se_sess->sess_kref);
|
|
|
|
if (sess->deleted) {
|
|
qlt_undelete_sess(sess);
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
|
|
"qla_target(%u): %ssession for port %02x:"
|
|
"%02x:%02x:%02x:%02x:%02x:%02x:%02x (loop ID %d) "
|
|
"reappeared\n", vha->vp_idx, sess->local ? "local "
|
|
: "", sess->port_name[0], sess->port_name[1],
|
|
sess->port_name[2], sess->port_name[3],
|
|
sess->port_name[4], sess->port_name[5],
|
|
sess->port_name[6], sess->port_name[7],
|
|
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 %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
|
|
"(loop ID %d) became global\n", vha->vp_idx,
|
|
fcport->port_name[0], fcport->port_name[1],
|
|
fcport->port_name[2], fcport->port_name[3],
|
|
fcport->port_name[4], fcport->port_name[5],
|
|
fcport->port_name[6], fcport->port_name[7],
|
|
sess->loop_id);
|
|
sess->local = 0;
|
|
}
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
ha->tgt.tgt_ops->put_sess(sess);
|
|
}
|
|
|
|
void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt *tgt = ha->tgt.qla_tgt;
|
|
struct qla_tgt_sess *sess;
|
|
unsigned long flags;
|
|
|
|
if (!vha->hw->tgt.tgt_ops)
|
|
return;
|
|
|
|
if (!tgt || (fcport->port_type != FCT_INITIATOR))
|
|
return;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
if (tgt->tgt_stop) {
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
return;
|
|
}
|
|
sess = qlt_find_sess_by_port_name(tgt, fcport->port_name);
|
|
if (!sess) {
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
return;
|
|
}
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess);
|
|
|
|
sess->local = 1;
|
|
qlt_schedule_sess_for_deletion(sess, false);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
}
|
|
|
|
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->hardware_lock, flags);
|
|
ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002,
|
|
"tgt %p, empty(sess_list)=%d sess_count=%d\n",
|
|
tgt, list_empty(&tgt->sess_list), tgt->sess_count);
|
|
res = (tgt->sess_count == 0);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
return res;
|
|
}
|
|
|
|
/* Called by tcm_qla2xxx configfs code */
|
|
void qlt_stop_phase1(struct qla_tgt *tgt)
|
|
{
|
|
struct scsi_qla_host *vha = tgt->vha;
|
|
struct qla_hw_data *ha = tgt->ha;
|
|
unsigned long flags;
|
|
|
|
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");
|
|
dump_stack();
|
|
return;
|
|
}
|
|
|
|
ql_dbg(ql_dbg_tgt, 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(&ha->tgt.tgt_mutex);
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
tgt->tgt_stop = 1;
|
|
qlt_clear_tgt_db(tgt, true);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
mutex_unlock(&ha->tgt.tgt_mutex);
|
|
|
|
flush_delayed_work(&tgt->sess_del_work);
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009,
|
|
"Waiting for sess works (tgt %p)", tgt);
|
|
spin_lock_irqsave(&tgt->sess_work_lock, flags);
|
|
while (!list_empty(&tgt->sess_works_list)) {
|
|
spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
|
|
flush_scheduled_work();
|
|
spin_lock_irqsave(&tgt->sess_work_lock, flags);
|
|
}
|
|
spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a,
|
|
"Waiting for tgt %p: list_empty(sess_list)=%d "
|
|
"sess_count=%d\n", tgt, list_empty(&tgt->sess_list),
|
|
tgt->sess_count);
|
|
|
|
wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
|
|
|
|
/* Big hammer */
|
|
if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha))
|
|
qlt_disable_vha(vha);
|
|
|
|
/* Wait for sessions to clear out (just in case) */
|
|
wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
|
|
}
|
|
EXPORT_SYMBOL(qlt_stop_phase1);
|
|
|
|
/* Called by tcm_qla2xxx configfs code */
|
|
void qlt_stop_phase2(struct qla_tgt *tgt)
|
|
{
|
|
struct qla_hw_data *ha = tgt->ha;
|
|
unsigned long flags;
|
|
|
|
if (tgt->tgt_stopped) {
|
|
ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf04f,
|
|
"Already in tgt->tgt_stopped state\n");
|
|
dump_stack();
|
|
return;
|
|
}
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00b,
|
|
"Waiting for %d IRQ commands to complete (tgt %p)",
|
|
tgt->irq_cmd_count, tgt);
|
|
|
|
mutex_lock(&ha->tgt.tgt_mutex);
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
while (tgt->irq_cmd_count != 0) {
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
udelay(2);
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
}
|
|
tgt->tgt_stop = 0;
|
|
tgt->tgt_stopped = 1;
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
mutex_unlock(&ha->tgt.tgt_mutex);
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00c, "Stop of tgt %p finished",
|
|
tgt);
|
|
}
|
|
EXPORT_SYMBOL(qlt_stop_phase2);
|
|
|
|
/* Called from qlt_remove_target() -> qla2x00_remove_one() */
|
|
static void qlt_release(struct qla_tgt *tgt)
|
|
{
|
|
struct qla_hw_data *ha = tgt->ha;
|
|
|
|
if ((ha->tgt.qla_tgt != NULL) && !tgt->tgt_stopped)
|
|
qlt_stop_phase2(tgt);
|
|
|
|
ha->tgt.qla_tgt = NULL;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, tgt->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 scsi_qla_host *vha,
|
|
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 qla_hw_data *ha = vha->hw;
|
|
request_t *pkt;
|
|
struct nack_to_isp *nack;
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha);
|
|
|
|
/* Send marker if required */
|
|
if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
|
|
return;
|
|
|
|
pkt = (request_t *)qla2x00_alloc_iocbs(vha, 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 (ha->tgt.qla_tgt != NULL)
|
|
ha->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.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 &
|
|
__constant_cpu_to_le32(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;
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe005,
|
|
"qla_target(%d): Sending 24xx Notify Ack %d\n",
|
|
vha->vp_idx, nack->u.isp24.status);
|
|
|
|
qla2x00_start_iocbs(vha, vha->req);
|
|
}
|
|
|
|
/*
|
|
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
|
|
*/
|
|
static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha,
|
|
struct abts_recv_from_24xx *abts, uint32_t status,
|
|
bool ids_reversed)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct abts_resp_to_24xx *resp;
|
|
uint32_t 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);
|
|
|
|
/* Send marker if required */
|
|
if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
|
|
return;
|
|
|
|
resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs(vha, 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->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 = __constant_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[0] = abts->fcp_hdr_le.d_id[0];
|
|
resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1];
|
|
resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2];
|
|
resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0];
|
|
resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1];
|
|
resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2];
|
|
} else {
|
|
resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0];
|
|
resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1];
|
|
resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2];
|
|
resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0];
|
|
resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1];
|
|
resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2];
|
|
}
|
|
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 = 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 */
|
|
}
|
|
|
|
ha->tgt.qla_tgt->abts_resp_expected++;
|
|
|
|
qla2x00_start_iocbs(vha, vha->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 abts_resp_from_24xx_fw *entry)
|
|
{
|
|
struct ctio7_to_24xx *ctio;
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe007,
|
|
"Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw);
|
|
/* Send marker if required */
|
|
if (qlt_issue_marker(vha, 1) != QLA_SUCCESS)
|
|
return;
|
|
|
|
ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, 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;
|
|
}
|
|
|
|
/*
|
|
* 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 = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
|
|
ctio->vp_index = vha->vp_idx;
|
|
ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
|
|
ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
|
|
ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
|
|
ctio->exchange_addr = entry->exchange_addr_to_abort;
|
|
ctio->u.status1.flags =
|
|
__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
|
|
CTIO7_FLAGS_TERMINATE);
|
|
ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
|
|
|
|
qla2x00_start_iocbs(vha, vha->req);
|
|
|
|
qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry,
|
|
FCP_TMF_CMPL, true);
|
|
}
|
|
|
|
/* 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 qla_tgt_sess *sess)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct se_session *se_sess = sess->se_sess;
|
|
struct qla_tgt_mgmt_cmd *mcmd;
|
|
struct se_cmd *se_cmd;
|
|
u32 lun = 0;
|
|
int rc;
|
|
bool found_lun = false;
|
|
|
|
spin_lock(&se_sess->sess_cmd_lock);
|
|
list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
|
|
struct qla_tgt_cmd *cmd =
|
|
container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
|
|
if (cmd->tag == abts->exchange_addr_to_abort) {
|
|
lun = cmd->unpacked_lun;
|
|
found_lun = true;
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock(&se_sess->sess_cmd_lock);
|
|
|
|
if (!found_lun)
|
|
return -ENOENT;
|
|
|
|
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->sess = sess;
|
|
memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));
|
|
|
|
rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
|
|
abts->exchange_addr_to_abort);
|
|
if (rc != 0) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
|
|
"qla_target(%d): tgt_ops->handle_tmr()"
|
|
" failed: %d", 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. 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 qla_tgt_sess *sess;
|
|
uint32_t tag = abts->exchange_addr_to_abort;
|
|
uint8_t s_id[3];
|
|
int rc;
|
|
|
|
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(vha, 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(vha, 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[2],
|
|
abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
|
|
le32_to_cpu(abts->fcp_hdr_le.parameter));
|
|
|
|
s_id[0] = abts->fcp_hdr_le.s_id[2];
|
|
s_id[1] = abts->fcp_hdr_le.s_id[1];
|
|
s_id[2] = abts->fcp_hdr_le.s_id[0];
|
|
|
|
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-existant session\n",
|
|
vha->vp_idx);
|
|
rc = qlt_sched_sess_work(ha->tgt.qla_tgt,
|
|
QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts));
|
|
if (rc != 0) {
|
|
qlt_24xx_send_abts_resp(vha, 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(vha, 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 scsi_qla_host *ha,
|
|
struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
|
|
{
|
|
struct atio_from_isp *atio = &mcmd->orig_iocb.atio;
|
|
struct ctio7_to_24xx *ctio;
|
|
|
|
ql_dbg(ql_dbg_tgt, ha, 0xe008,
|
|
"Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n",
|
|
ha, atio, resp_code);
|
|
|
|
/* Send marker if required */
|
|
if (qlt_issue_marker(ha, 1) != QLA_SUCCESS)
|
|
return;
|
|
|
|
ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, 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 = mcmd->sess->loop_id;
|
|
ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
|
|
ctio->vp_index = ha->vp_idx;
|
|
ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
|
|
ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
|
|
ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
|
|
ctio->exchange_addr = atio->u.isp24.exchange_addr;
|
|
ctio->u.status1.flags = (atio->u.isp24.attr << 9) |
|
|
__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
|
|
CTIO7_FLAGS_SEND_STATUS);
|
|
ctio->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
|
|
ctio->u.status1.scsi_status =
|
|
__constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
|
|
ctio->u.status1.response_len = __constant_cpu_to_le16(8);
|
|
ctio->u.status1.sense_data[0] = resp_code;
|
|
|
|
qla2x00_start_iocbs(ha, ha->req);
|
|
}
|
|
|
|
void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
|
|
{
|
|
mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
|
|
}
|
|
EXPORT_SYMBOL(qlt_free_mcmd);
|
|
|
|
/* 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;
|
|
|
|
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(&ha->hardware_lock, flags);
|
|
if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
|
|
qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
|
|
0, 0, 0, 0, 0, 0);
|
|
else {
|
|
if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
|
|
qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
|
|
mcmd->fc_tm_rsp, false);
|
|
else
|
|
qlt_24xx_send_task_mgmt_ctio(vha, 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..
|
|
*/
|
|
ha->tgt.tgt_ops->free_mcmd(mcmd);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, 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 = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
|
|
cmd->sg_cnt, cmd->dma_data_direction);
|
|
if (unlikely(prm->seg_cnt == 0))
|
|
goto out_err;
|
|
|
|
prm->cmd->sg_mapped = 1;
|
|
|
|
/*
|
|
* If greater than four sg entries then we need to allocate
|
|
* the continuation entries
|
|
*/
|
|
if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
|
|
prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt -
|
|
prm->tgt->datasegs_per_cmd, prm->tgt->datasegs_per_cont);
|
|
|
|
ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe009, "seg_cnt=%d, req_cnt=%d\n",
|
|
prm->seg_cnt, prm->req_cnt);
|
|
return 0;
|
|
|
|
out_err:
|
|
ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d,
|
|
"qla_target(%d): PCI mapping failed: sg_cnt=%d",
|
|
0, prm->cmd->sg_cnt);
|
|
return -1;
|
|
}
|
|
|
|
static inline void qlt_unmap_sg(struct scsi_qla_host *vha,
|
|
struct qla_tgt_cmd *cmd)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
|
|
BUG_ON(!cmd->sg_mapped);
|
|
pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
|
|
cmd->sg_mapped = 0;
|
|
}
|
|
|
|
static int qlt_check_reserve_free_req(struct scsi_qla_host *vha,
|
|
uint32_t req_cnt)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
device_reg_t __iomem *reg = ha->iobase;
|
|
uint32_t cnt;
|
|
|
|
if (vha->req->cnt < (req_cnt + 2)) {
|
|
cnt = (uint16_t)RD_REG_DWORD(®->isp24.req_q_out);
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe00a,
|
|
"Request ring circled: cnt=%d, vha->->ring_index=%d, "
|
|
"vha->req->cnt=%d, req_cnt=%d\n", cnt,
|
|
vha->req->ring_index, vha->req->cnt, req_cnt);
|
|
if (vha->req->ring_index < cnt)
|
|
vha->req->cnt = cnt - vha->req->ring_index;
|
|
else
|
|
vha->req->cnt = vha->req->length -
|
|
(vha->req->ring_index - cnt);
|
|
}
|
|
|
|
if (unlikely(vha->req->cnt < (req_cnt + 2))) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe00b,
|
|
"qla_target(%d): There is no room in the "
|
|
"request ring: vha->req->ring_index=%d, vha->req->cnt=%d, "
|
|
"req_cnt=%d\n", vha->vp_idx, vha->req->ring_index,
|
|
vha->req->cnt, req_cnt);
|
|
return -EAGAIN;
|
|
}
|
|
vha->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 scsi_qla_host *vha)
|
|
{
|
|
/* Adjust ring index. */
|
|
vha->req->ring_index++;
|
|
if (vha->req->ring_index == vha->req->length) {
|
|
vha->req->ring_index = 0;
|
|
vha->req->ring_ptr = vha->req->ring;
|
|
} else {
|
|
vha->req->ring_ptr++;
|
|
}
|
|
return (cont_entry_t *)vha->req->ring_ptr;
|
|
}
|
|
|
|
/* ha->hardware_lock supposed to be held on entry */
|
|
static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
uint32_t h;
|
|
|
|
h = ha->tgt.current_handle;
|
|
/* always increment cmd handle */
|
|
do {
|
|
++h;
|
|
if (h > DEFAULT_OUTSTANDING_COMMANDS)
|
|
h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
|
|
if (h == ha->tgt.current_handle) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe04e,
|
|
"qla_target(%d): Ran out of "
|
|
"empty cmd slots in ha %p\n", vha->vp_idx, ha);
|
|
h = QLA_TGT_NULL_HANDLE;
|
|
break;
|
|
}
|
|
} while ((h == QLA_TGT_NULL_HANDLE) ||
|
|
(h == QLA_TGT_SKIP_HANDLE) ||
|
|
(ha->tgt.cmds[h-1] != NULL));
|
|
|
|
if (h != QLA_TGT_NULL_HANDLE)
|
|
ha->tgt.current_handle = h;
|
|
|
|
return h;
|
|
}
|
|
|
|
/* ha->hardware_lock supposed to be held on entry */
|
|
static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm,
|
|
struct scsi_qla_host *vha)
|
|
{
|
|
uint32_t h;
|
|
struct ctio7_to_24xx *pkt;
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct atio_from_isp *atio = &prm->cmd->atio;
|
|
|
|
pkt = (struct ctio7_to_24xx *)vha->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 = vha->vp_idx;
|
|
|
|
h = qlt_make_handle(vha);
|
|
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
|
|
ha->tgt.cmds[h-1] = prm->cmd;
|
|
|
|
pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
|
|
pkt->nport_handle = prm->cmd->loop_id;
|
|
pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
|
|
pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
|
|
pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
|
|
pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
|
|
pkt->exchange_addr = atio->u.isp24.exchange_addr;
|
|
pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
|
|
pkt->u.status0.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
|
|
pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe00c,
|
|
"qla_target(%d): handle(cmd) -> %08x, timeout %d, ox_id %#x\n",
|
|
vha->vp_idx, pkt->handle, QLA_TGT_TIMEOUT,
|
|
le16_to_cpu(pkt->u.status0.ox_id));
|
|
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,
|
|
struct scsi_qla_host *vha)
|
|
{
|
|
int cnt;
|
|
uint32_t *dword_ptr;
|
|
int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
|
|
|
|
/* Build continuation packets */
|
|
while (prm->seg_cnt > 0) {
|
|
cont_a64_entry_t *cont_pkt64 =
|
|
(cont_a64_entry_t *)qlt_get_req_pkt(vha);
|
|
|
|
/*
|
|
* 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;
|
|
|
|
if (enable_64bit_addressing) {
|
|
cont_pkt64->entry_type = CONTINUE_A64_TYPE;
|
|
dword_ptr =
|
|
(uint32_t *)&cont_pkt64->dseg_0_address;
|
|
} else {
|
|
cont_pkt64->entry_type = CONTINUE_TYPE;
|
|
dword_ptr =
|
|
(uint32_t *)&((cont_entry_t *)
|
|
cont_pkt64)->dseg_0_address;
|
|
}
|
|
|
|
/* Load continuation entry data segments */
|
|
for (cnt = 0;
|
|
cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt;
|
|
cnt++, prm->seg_cnt--) {
|
|
*dword_ptr++ =
|
|
cpu_to_le32(pci_dma_lo32
|
|
(sg_dma_address(prm->sg)));
|
|
if (enable_64bit_addressing) {
|
|
*dword_ptr++ =
|
|
cpu_to_le32(pci_dma_hi32
|
|
(sg_dma_address
|
|
(prm->sg)));
|
|
}
|
|
*dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe00d,
|
|
"S/G Segment Cont. phys_addr=%llx:%llx, len=%d\n",
|
|
(long long unsigned int)
|
|
pci_dma_hi32(sg_dma_address(prm->sg)),
|
|
(long long unsigned int)
|
|
pci_dma_lo32(sg_dma_address(prm->sg)),
|
|
(int)sg_dma_len(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,
|
|
struct scsi_qla_host *vha)
|
|
{
|
|
int cnt;
|
|
uint32_t *dword_ptr;
|
|
int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr;
|
|
struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt;
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe00e,
|
|
"iocb->scsi_status=%x, iocb->flags=%x\n",
|
|
le16_to_cpu(pkt24->u.status0.scsi_status),
|
|
le16_to_cpu(pkt24->u.status0.flags));
|
|
|
|
pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
|
|
|
|
/* Setup packet address segment pointer */
|
|
dword_ptr = pkt24->u.status0.dseg_0_address;
|
|
|
|
/* 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 */
|
|
*dword_ptr++ = 0;
|
|
*dword_ptr = 0;
|
|
return;
|
|
}
|
|
|
|
/* If scatter gather */
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe00f, "%s", "Building S/G data segments...");
|
|
|
|
/* Load command entry data segments */
|
|
for (cnt = 0;
|
|
(cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
|
|
cnt++, prm->seg_cnt--) {
|
|
*dword_ptr++ =
|
|
cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
|
|
if (enable_64bit_addressing) {
|
|
*dword_ptr++ =
|
|
cpu_to_le32(pci_dma_hi32(
|
|
sg_dma_address(prm->sg)));
|
|
}
|
|
*dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe010,
|
|
"S/G Segment phys_addr=%llx:%llx, len=%d\n",
|
|
(long long unsigned int)pci_dma_hi32(sg_dma_address(
|
|
prm->sg)),
|
|
(long long unsigned int)pci_dma_lo32(sg_dma_address(
|
|
prm->sg)),
|
|
(int)sg_dma_len(prm->sg));
|
|
|
|
prm->sg = sg_next(prm->sg);
|
|
}
|
|
|
|
qlt_load_cont_data_segments(prm, vha);
|
|
}
|
|
|
|
static inline int qlt_has_data(struct qla_tgt_cmd *cmd)
|
|
{
|
|
return cmd->bufflen > 0;
|
|
}
|
|
|
|
/*
|
|
* 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 qla_tgt *tgt = cmd->tgt;
|
|
struct scsi_qla_host *vha = tgt->vha;
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct se_cmd *se_cmd = &cmd->se_cmd;
|
|
|
|
if (unlikely(cmd->aborted)) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014,
|
|
"qla_target(%d): terminating exchange "
|
|
"for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd,
|
|
se_cmd, cmd->tag);
|
|
|
|
cmd->state = QLA_TGT_STATE_ABORTED;
|
|
|
|
qlt_send_term_exchange(vha, cmd, &cmd->atio, 0);
|
|
|
|
/* !! At this point cmd could be already freed !! */
|
|
return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
|
|
}
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe011, "qla_target(%d): tag=%u\n",
|
|
vha->vp_idx, cmd->tag);
|
|
|
|
prm->cmd = cmd;
|
|
prm->tgt = tgt;
|
|
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->add_status_pkt = 0;
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe012, "rq_result=%x, xmit_type=%x\n",
|
|
prm->rq_result, xmit_type);
|
|
|
|
/* Send marker if required */
|
|
if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
|
|
return -EFAULT;
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe013, "CTIO start: vha(%d)\n", vha->vp_idx);
|
|
|
|
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(ql_dbg_tgt, vha, 0xe014,
|
|
"Residual underflow: %d (tag %d, "
|
|
"op %x, bufflen %d, rq_result %x)\n", prm->residual,
|
|
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(ql_dbg_tgt, vha, 0xe015,
|
|
"Residual overflow: %d (tag %d, "
|
|
"op %x, bufflen %d, rq_result %x)\n", prm->residual,
|
|
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(ha) &&
|
|
(prm->rq_result != 0))) {
|
|
prm->add_status_pkt = 1;
|
|
(*full_req_cnt)++;
|
|
}
|
|
}
|
|
}
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe016,
|
|
"req_cnt=%d, full_req_cnt=%d, add_status_pkt=%d\n",
|
|
prm->req_cnt, *full_req_cnt, prm->add_status_pkt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int qlt_need_explicit_conf(struct qla_hw_data *ha,
|
|
struct qla_tgt_cmd *cmd, int sending_sense)
|
|
{
|
|
if (ha->tgt.enable_class_2)
|
|
return 0;
|
|
|
|
if (sending_sense)
|
|
return cmd->conf_compl_supported;
|
|
else
|
|
return ha->tgt.enable_explicit_conf &&
|
|
cmd->conf_compl_supported;
|
|
}
|
|
|
|
#ifdef CONFIG_QLA_TGT_DEBUG_SRR
|
|
/*
|
|
* Original taken from the XFS code
|
|
*/
|
|
static unsigned long qlt_srr_random(void)
|
|
{
|
|
static int Inited;
|
|
static unsigned long RandomValue;
|
|
static DEFINE_SPINLOCK(lock);
|
|
/* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */
|
|
register long rv;
|
|
register long lo;
|
|
register long hi;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&lock, flags);
|
|
if (!Inited) {
|
|
RandomValue = jiffies;
|
|
Inited = 1;
|
|
}
|
|
rv = RandomValue;
|
|
hi = rv / 127773;
|
|
lo = rv % 127773;
|
|
rv = 16807 * lo - 2836 * hi;
|
|
if (rv <= 0)
|
|
rv += 2147483647;
|
|
RandomValue = rv;
|
|
spin_unlock_irqrestore(&lock, flags);
|
|
return rv;
|
|
}
|
|
|
|
static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
|
|
{
|
|
#if 0 /* This is not a real status packets lost, so it won't lead to SRR */
|
|
if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200)
|
|
== 50) {
|
|
*xmit_type &= ~QLA_TGT_XMIT_STATUS;
|
|
ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015,
|
|
"Dropping cmd %p (tag %d) status", cmd, cmd->tag);
|
|
}
|
|
#endif
|
|
/*
|
|
* It's currently not possible to simulate SRRs for FCP_WRITE without
|
|
* a physical link layer failure, so don't even try here..
|
|
*/
|
|
if (cmd->dma_data_direction != DMA_FROM_DEVICE)
|
|
return;
|
|
|
|
if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) &&
|
|
((qlt_srr_random() % 100) == 20)) {
|
|
int i, leave = 0;
|
|
unsigned int tot_len = 0;
|
|
|
|
while (leave == 0)
|
|
leave = qlt_srr_random() % cmd->sg_cnt;
|
|
|
|
for (i = 0; i < leave; i++)
|
|
tot_len += cmd->sg[i].length;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016,
|
|
"Cutting cmd %p (tag %d) buffer"
|
|
" tail to len %d, sg_cnt %d (cmd->bufflen %d,"
|
|
" cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave,
|
|
cmd->bufflen, cmd->sg_cnt);
|
|
|
|
cmd->bufflen = tot_len;
|
|
cmd->sg_cnt = leave;
|
|
}
|
|
|
|
if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) {
|
|
unsigned int offset = qlt_srr_random() % cmd->bufflen;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017,
|
|
"Cutting cmd %p (tag %d) buffer head "
|
|
"to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset,
|
|
cmd->bufflen);
|
|
if (offset == 0)
|
|
*xmit_type &= ~QLA_TGT_XMIT_DATA;
|
|
else if (qlt_set_data_offset(cmd, offset)) {
|
|
ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018,
|
|
"qlt_set_data_offset() failed (tag %d)", cmd->tag);
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type)
|
|
{}
|
|
#endif
|
|
|
|
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 |=
|
|
__constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
|
|
if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
|
|
ctio->u.status0.flags |= __constant_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->tgt->ha, prm->cmd, 1)) {
|
|
if (prm->cmd->se_cmd.scsi_status != 0) {
|
|
ql_dbg(ql_dbg_tgt, prm->cmd->vha, 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 |= __constant_cpu_to_le16(
|
|
CTIO7_FLAGS_EXPLICIT_CONFORM |
|
|
CTIO7_FLAGS_CONFORM_REQ);
|
|
}
|
|
skip_explict_conf:
|
|
ctio->u.status1.flags &=
|
|
~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
|
|
ctio->u.status1.flags |=
|
|
__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
|
|
ctio->u.status1.scsi_status |=
|
|
__constant_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 *)ctio->u.status1.sense_data)[i] =
|
|
cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
|
|
#if 0
|
|
if (unlikely((prm->sense_buffer_len % 4) != 0)) {
|
|
static int q;
|
|
if (q < 10) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe04f,
|
|
"qla_target(%d): %d bytes of sense "
|
|
"lost", prm->tgt->ha->vp_idx,
|
|
prm->sense_buffer_len % 4);
|
|
q++;
|
|
}
|
|
}
|
|
#endif
|
|
} else {
|
|
ctio->u.status1.flags &=
|
|
~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
|
|
ctio->u.status1.flags |=
|
|
__constant_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 ??? */
|
|
}
|
|
|
|
/*
|
|
* 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_hw_data *ha = vha->hw;
|
|
struct ctio7_to_24xx *pkt;
|
|
struct qla_tgt_prm prm;
|
|
uint32_t full_req_cnt = 0;
|
|
unsigned long flags = 0;
|
|
int res;
|
|
|
|
memset(&prm, 0, sizeof(prm));
|
|
qlt_check_srr_debug(cmd, &xmit_type);
|
|
|
|
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018,
|
|
"is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, "
|
|
"cmd->dma_data_direction=%d\n", (xmit_type & QLA_TGT_XMIT_STATUS) ?
|
|
1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction);
|
|
|
|
res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status,
|
|
&full_req_cnt);
|
|
if (unlikely(res != 0)) {
|
|
if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED)
|
|
return 0;
|
|
|
|
return res;
|
|
}
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
|
|
/* Does F/W have an IOCBs for this request */
|
|
res = qlt_check_reserve_free_req(vha, full_req_cnt);
|
|
if (unlikely(res))
|
|
goto out_unmap_unlock;
|
|
|
|
res = qlt_24xx_build_ctio_pkt(&prm, vha);
|
|
if (unlikely(res != 0))
|
|
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 |=
|
|
__constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
|
|
CTIO7_FLAGS_STATUS_MODE_0);
|
|
|
|
qlt_load_data_segments(&prm, vha);
|
|
|
|
if (prm.add_status_pkt == 0) {
|
|
if (xmit_type & QLA_TGT_XMIT_STATUS) {
|
|
pkt->u.status0.scsi_status =
|
|
cpu_to_le16(prm.rq_result);
|
|
pkt->u.status0.residual =
|
|
cpu_to_le32(prm.residual);
|
|
pkt->u.status0.flags |= __constant_cpu_to_le16(
|
|
CTIO7_FLAGS_SEND_STATUS);
|
|
if (qlt_need_explicit_conf(ha, cmd, 0)) {
|
|
pkt->u.status0.flags |=
|
|
__constant_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(vha);
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe019,
|
|
"Building additional status packet\n");
|
|
|
|
memcpy(ctio, pkt, sizeof(*ctio));
|
|
ctio->entry_count = 1;
|
|
ctio->dseg_count = 0;
|
|
ctio->u.status1.flags &= ~__constant_cpu_to_le16(
|
|
CTIO7_FLAGS_DATA_IN);
|
|
|
|
/* Real finish is ctio_m1's finish */
|
|
pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
|
|
pkt->u.status0.flags |= __constant_cpu_to_le16(
|
|
CTIO7_FLAGS_DONT_RET_CTIO);
|
|
qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio,
|
|
&prm);
|
|
pr_debug("Status CTIO7: %p\n", ctio);
|
|
}
|
|
} else
|
|
qlt_24xx_init_ctio_to_isp(pkt, &prm);
|
|
|
|
|
|
cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe01a,
|
|
"Xmitting CTIO7 response pkt for 24xx: %p scsi_status: 0x%02x\n",
|
|
pkt, scsi_status);
|
|
|
|
qla2x00_start_iocbs(vha, vha->req);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
return 0;
|
|
|
|
out_unmap_unlock:
|
|
if (cmd->sg_mapped)
|
|
qlt_unmap_sg(vha, cmd);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, 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_hw_data *ha = vha->hw;
|
|
struct qla_tgt *tgt = cmd->tgt;
|
|
struct qla_tgt_prm prm;
|
|
unsigned long flags;
|
|
int res = 0;
|
|
|
|
memset(&prm, 0, sizeof(prm));
|
|
prm.cmd = cmd;
|
|
prm.tgt = tgt;
|
|
prm.sg = NULL;
|
|
prm.req_cnt = 1;
|
|
|
|
/* Send marker if required */
|
|
if (qlt_issue_marker(vha, 0) != QLA_SUCCESS)
|
|
return -EIO;
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe01b, "CTIO_start: vha(%d)",
|
|
(int)vha->vp_idx);
|
|
|
|
/* Calculate number of entries and segments required */
|
|
if (qlt_pci_map_calc_cnt(&prm) != 0)
|
|
return -EAGAIN;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
|
|
/* Does F/W have an IOCBs for this request */
|
|
res = qlt_check_reserve_free_req(vha, prm.req_cnt);
|
|
if (res != 0)
|
|
goto out_unlock_free_unmap;
|
|
|
|
res = qlt_24xx_build_ctio_pkt(&prm, vha);
|
|
if (unlikely(res != 0))
|
|
goto out_unlock_free_unmap;
|
|
pkt = (struct ctio7_to_24xx *)prm.pkt;
|
|
pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
|
|
CTIO7_FLAGS_STATUS_MODE_0);
|
|
qlt_load_data_segments(&prm, vha);
|
|
|
|
cmd->state = QLA_TGT_STATE_NEED_DATA;
|
|
|
|
qla2x00_start_iocbs(vha, vha->req);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
return res;
|
|
|
|
out_unlock_free_unmap:
|
|
if (cmd->sg_mapped)
|
|
qlt_unmap_sg(vha, cmd);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
return res;
|
|
}
|
|
EXPORT_SYMBOL(qlt_rdy_to_xfer);
|
|
|
|
/* 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 scsi_qla_host *vha,
|
|
struct qla_tgt_cmd *cmd,
|
|
struct atio_from_isp *atio)
|
|
{
|
|
struct ctio7_to_24xx *ctio24;
|
|
struct qla_hw_data *ha = vha->hw;
|
|
request_t *pkt;
|
|
int ret = 0;
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
|
|
|
|
pkt = (request_t *)qla2x00_alloc_iocbs(vha, 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;
|
|
}
|
|
|
|
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 = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
|
|
ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
|
|
ctio24->vp_index = vha->vp_idx;
|
|
ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
|
|
ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
|
|
ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
|
|
ctio24->exchange_addr = atio->u.isp24.exchange_addr;
|
|
ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
|
|
__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 |
|
|
CTIO7_FLAGS_TERMINATE);
|
|
ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
|
|
|
|
/* Most likely, it isn't needed */
|
|
ctio24->u.status1.residual = get_unaligned((uint32_t *)
|
|
&atio->u.isp24.fcp_cmnd.add_cdb[
|
|
atio->u.isp24.fcp_cmnd.add_cdb_len]);
|
|
if (ctio24->u.status1.residual != 0)
|
|
ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
|
|
|
|
qla2x00_start_iocbs(vha, vha->req);
|
|
return ret;
|
|
}
|
|
|
|
static void qlt_send_term_exchange(struct scsi_qla_host *vha,
|
|
struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
|
|
{
|
|
unsigned long flags;
|
|
int rc;
|
|
|
|
if (qlt_issue_marker(vha, ha_locked) < 0)
|
|
return;
|
|
|
|
if (ha_locked) {
|
|
rc = __qlt_send_term_exchange(vha, cmd, atio);
|
|
goto done;
|
|
}
|
|
spin_lock_irqsave(&vha->hw->hardware_lock, flags);
|
|
rc = __qlt_send_term_exchange(vha, cmd, atio);
|
|
spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
|
|
done:
|
|
if (rc == 1) {
|
|
if (!ha_locked && !in_interrupt())
|
|
msleep(250); /* just in case */
|
|
|
|
vha->hw->tgt.tgt_ops->free_cmd(cmd);
|
|
}
|
|
}
|
|
|
|
void qlt_free_cmd(struct qla_tgt_cmd *cmd)
|
|
{
|
|
BUG_ON(cmd->sg_mapped);
|
|
|
|
if (unlikely(cmd->free_sg))
|
|
kfree(cmd->sg);
|
|
kmem_cache_free(qla_tgt_cmd_cachep, cmd);
|
|
}
|
|
EXPORT_SYMBOL(qlt_free_cmd);
|
|
|
|
/* ha->hardware_lock supposed to be held on entry */
|
|
static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha,
|
|
struct qla_tgt_cmd *cmd, void *ctio)
|
|
{
|
|
struct qla_tgt_srr_ctio *sc;
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt *tgt = ha->tgt.qla_tgt;
|
|
struct qla_tgt_srr_imm *imm;
|
|
|
|
tgt->ctio_srr_id++;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019,
|
|
"qla_target(%d): CTIO with SRR status received\n", vha->vp_idx);
|
|
|
|
if (!ctio) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055,
|
|
"qla_target(%d): SRR CTIO, but ctio is NULL\n",
|
|
vha->vp_idx);
|
|
return -EINVAL;
|
|
}
|
|
|
|
sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
|
|
if (sc != NULL) {
|
|
sc->cmd = cmd;
|
|
/* IRQ is already OFF */
|
|
spin_lock(&tgt->srr_lock);
|
|
sc->srr_id = tgt->ctio_srr_id;
|
|
list_add_tail(&sc->srr_list_entry,
|
|
&tgt->srr_ctio_list);
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a,
|
|
"CTIO SRR %p added (id %d)\n", sc, sc->srr_id);
|
|
if (tgt->imm_srr_id == tgt->ctio_srr_id) {
|
|
int found = 0;
|
|
list_for_each_entry(imm, &tgt->srr_imm_list,
|
|
srr_list_entry) {
|
|
if (imm->srr_id == sc->srr_id) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (found) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b,
|
|
"Scheduling srr work\n");
|
|
schedule_work(&tgt->srr_work);
|
|
} else {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056,
|
|
"qla_target(%d): imm_srr_id "
|
|
"== ctio_srr_id (%d), but there is no "
|
|
"corresponding SRR IMM, deleting CTIO "
|
|
"SRR %p\n", vha->vp_idx,
|
|
tgt->ctio_srr_id, sc);
|
|
list_del(&sc->srr_list_entry);
|
|
spin_unlock(&tgt->srr_lock);
|
|
|
|
kfree(sc);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
spin_unlock(&tgt->srr_lock);
|
|
} else {
|
|
struct qla_tgt_srr_imm *ti;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057,
|
|
"qla_target(%d): Unable to allocate SRR CTIO entry\n",
|
|
vha->vp_idx);
|
|
spin_lock(&tgt->srr_lock);
|
|
list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list,
|
|
srr_list_entry) {
|
|
if (imm->srr_id == tgt->ctio_srr_id) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c,
|
|
"IMM SRR %p deleted (id %d)\n",
|
|
imm, imm->srr_id);
|
|
list_del(&imm->srr_list_entry);
|
|
qlt_reject_free_srr_imm(vha, imm, 1);
|
|
}
|
|
}
|
|
spin_unlock(&tgt->srr_lock);
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
|
|
*/
|
|
static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
|
|
struct qla_tgt_cmd *cmd, uint32_t status)
|
|
{
|
|
int term = 0;
|
|
|
|
if (ctio != NULL) {
|
|
struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio;
|
|
term = !(c->flags &
|
|
__constant_cpu_to_le16(OF_TERM_EXCH));
|
|
} else
|
|
term = 1;
|
|
|
|
if (term)
|
|
qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
|
|
|
|
return term;
|
|
}
|
|
|
|
/* ha->hardware_lock supposed to be held on entry */
|
|
static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha,
|
|
uint32_t handle)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
|
|
handle--;
|
|
if (ha->tgt.cmds[handle] != NULL) {
|
|
struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle];
|
|
ha->tgt.cmds[handle] = NULL;
|
|
return cmd;
|
|
} else
|
|
return NULL;
|
|
}
|
|
|
|
/* ha->hardware_lock supposed to be held on entry */
|
|
static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
|
|
uint32_t handle, void *ctio)
|
|
{
|
|
struct qla_tgt_cmd *cmd = NULL;
|
|
|
|
/* Clear out internal marks */
|
|
handle &= ~(CTIO_COMPLETION_HANDLE_MARK |
|
|
CTIO_INTERMEDIATE_HANDLE_MARK);
|
|
|
|
if (handle != QLA_TGT_NULL_HANDLE) {
|
|
if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s",
|
|
"SKIP_HANDLE CTIO\n");
|
|
return NULL;
|
|
}
|
|
/* handle-1 is actually used */
|
|
if (unlikely(handle > DEFAULT_OUTSTANDING_COMMANDS)) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe052,
|
|
"qla_target(%d): Wrong handle %x received\n",
|
|
vha->vp_idx, handle);
|
|
return NULL;
|
|
}
|
|
cmd = qlt_get_cmd(vha, handle);
|
|
if (unlikely(cmd == NULL)) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe053,
|
|
"qla_target(%d): Suspicious: unable to "
|
|
"find the command with handle %x\n", vha->vp_idx,
|
|
handle);
|
|
return 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, uint32_t handle,
|
|
uint32_t status, void *ctio)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct se_cmd *se_cmd;
|
|
struct target_core_fabric_ops *tfo;
|
|
struct qla_tgt_cmd *cmd;
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe01e,
|
|
"qla_target(%d): handle(ctio %p status %#x) <- %08x\n",
|
|
vha->vp_idx, ctio, status, handle);
|
|
|
|
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, handle, ctio);
|
|
if (cmd == NULL)
|
|
return;
|
|
|
|
se_cmd = &cmd->se_cmd;
|
|
tfo = se_cmd->se_tfo;
|
|
|
|
if (cmd->sg_mapped)
|
|
qlt_unmap_sg(vha, cmd);
|
|
|
|
if (unlikely(status != CTIO_SUCCESS)) {
|
|
switch (status & 0xFFFF) {
|
|
case CTIO_LIP_RESET:
|
|
case CTIO_TARGET_RESET:
|
|
case CTIO_ABORTED:
|
|
case CTIO_TIMEOUT:
|
|
case CTIO_INVALID_RX_ID:
|
|
/* 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:
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059,
|
|
"qla_target(%d): CTIO with PORT LOGGED "
|
|
"OUT (29) or PORT UNAVAILABLE (28) status %x "
|
|
"received (state %x, se_cmd %p)\n", vha->vp_idx,
|
|
status, cmd->state, se_cmd);
|
|
break;
|
|
|
|
case CTIO_SRR_RECEIVED:
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a,
|
|
"qla_target(%d): CTIO with SRR_RECEIVED"
|
|
" status %x received (state %x, se_cmd %p)\n",
|
|
vha->vp_idx, status, cmd->state, se_cmd);
|
|
if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0)
|
|
break;
|
|
else
|
|
return;
|
|
|
|
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;
|
|
}
|
|
|
|
if (cmd->state != QLA_TGT_STATE_NEED_DATA)
|
|
if (qlt_term_ctio_exchange(vha, ctio, cmd, status))
|
|
return;
|
|
}
|
|
|
|
if (cmd->state == QLA_TGT_STATE_PROCESSED) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
|
|
} else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
|
|
int rx_status = 0;
|
|
|
|
cmd->state = QLA_TGT_STATE_DATA_IN;
|
|
|
|
if (unlikely(status != CTIO_SUCCESS))
|
|
rx_status = -EIO;
|
|
else
|
|
cmd->write_data_transferred = 1;
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe020,
|
|
"Data received, context %x, rx_status %d\n",
|
|
0x0, rx_status);
|
|
|
|
ha->tgt.tgt_ops->handle_data(cmd);
|
|
return;
|
|
} else if (cmd->state == QLA_TGT_STATE_ABORTED) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e,
|
|
"Aborted command %p (tag %d) finished\n", cmd, cmd->tag);
|
|
} else {
|
|
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)) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n");
|
|
dump_stack();
|
|
}
|
|
|
|
ha->tgt.tgt_ops->free_cmd(cmd);
|
|
}
|
|
|
|
/* ha->hardware_lock supposed to be held on entry */
|
|
/* called via callback from qla2xxx */
|
|
void qlt_ctio_completion(struct scsi_qla_host *vha, uint32_t handle)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt *tgt = ha->tgt.qla_tgt;
|
|
|
|
if (likely(tgt == NULL)) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe021,
|
|
"CTIO, but target mode not enabled"
|
|
" (ha %d %p handle %#x)", vha->vp_idx, ha, handle);
|
|
return;
|
|
}
|
|
|
|
tgt->irq_cmd_count++;
|
|
qlt_do_ctio_completion(vha, handle, CTIO_SUCCESS, NULL);
|
|
tgt->irq_cmd_count--;
|
|
}
|
|
|
|
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 = MSG_SIMPLE_TAG;
|
|
break;
|
|
case ATIO_HEAD_OF_QUEUE:
|
|
fcp_task_attr = MSG_HEAD_TAG;
|
|
break;
|
|
case ATIO_ORDERED_QUEUE:
|
|
fcp_task_attr = MSG_ORDERED_TAG;
|
|
break;
|
|
case ATIO_ACA_QUEUE:
|
|
fcp_task_attr = MSG_ACA_TAG;
|
|
break;
|
|
case ATIO_UNTAGGED:
|
|
fcp_task_attr = MSG_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 = MSG_ORDERED_TAG;
|
|
break;
|
|
}
|
|
|
|
return fcp_task_attr;
|
|
}
|
|
|
|
static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *,
|
|
uint8_t *);
|
|
/*
|
|
* Process context for I/O path into tcm_qla2xxx code
|
|
*/
|
|
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;
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt *tgt = ha->tgt.qla_tgt;
|
|
struct qla_tgt_sess *sess = NULL;
|
|
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;
|
|
|
|
if (tgt->tgt_stop)
|
|
goto out_term;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
|
|
atio->u.isp24.fcp_hdr.s_id);
|
|
/* Do kref_get() before dropping qla_hw_data->hardware_lock. */
|
|
if (sess)
|
|
kref_get(&sess->se_sess->sess_kref);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
if (unlikely(!sess)) {
|
|
uint8_t *s_id = atio->u.isp24.fcp_hdr.s_id;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022,
|
|
"qla_target(%d): Unable to find wwn login"
|
|
" (s_id %x:%x:%x), trying to create it manually\n",
|
|
vha->vp_idx, s_id[0], s_id[1], s_id[2]);
|
|
|
|
if (atio->u.raw.entry_count > 1) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023,
|
|
"Dropping multy entry cmd %p\n", cmd);
|
|
goto out_term;
|
|
}
|
|
|
|
mutex_lock(&ha->tgt.tgt_mutex);
|
|
sess = qlt_make_local_sess(vha, s_id);
|
|
/* sess has an extra creation ref. */
|
|
mutex_unlock(&ha->tgt.tgt_mutex);
|
|
|
|
if (!sess)
|
|
goto out_term;
|
|
}
|
|
|
|
cmd->sess = sess;
|
|
cmd->loop_id = sess->loop_id;
|
|
cmd->conf_compl_supported = sess->conf_compl_supported;
|
|
|
|
cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
|
|
cmd->tag = atio->u.isp24.exchange_addr;
|
|
cmd->unpacked_lun = scsilun_to_int(
|
|
(struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
|
|
|
|
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 = be32_to_cpu(get_unaligned((uint32_t *)
|
|
&atio->u.isp24.fcp_cmnd.add_cdb[
|
|
atio->u.isp24.fcp_cmnd.add_cdb_len]));
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe022,
|
|
"qla_target: START qla command: %p lun: 0x%04x (tag %d)\n",
|
|
cmd, cmd->unpacked_lun, cmd->tag);
|
|
|
|
ret = vha->hw->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 qla_tgt_handle_cmd_for_atio*(
|
|
*/
|
|
ha->tgt.tgt_ops->put_sess(sess);
|
|
return;
|
|
|
|
out_term:
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "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.
|
|
*/
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
qlt_send_term_exchange(vha, NULL, &cmd->atio, 1);
|
|
kmem_cache_free(qla_tgt_cmd_cachep, cmd);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
if (sess)
|
|
ha->tgt.tgt_ops->put_sess(sess);
|
|
}
|
|
|
|
/* 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 = ha->tgt.qla_tgt;
|
|
struct qla_tgt_cmd *cmd;
|
|
|
|
if (unlikely(tgt->tgt_stop)) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021,
|
|
"New command while device %p is shutting down\n", tgt);
|
|
return -EFAULT;
|
|
}
|
|
|
|
cmd = kmem_cache_zalloc(qla_tgt_cmd_cachep, GFP_ATOMIC);
|
|
if (!cmd) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e,
|
|
"qla_target(%d): Allocation of cmd failed\n", vha->vp_idx);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&cmd->cmd_list);
|
|
|
|
memcpy(&cmd->atio, atio, sizeof(*atio));
|
|
cmd->state = QLA_TGT_STATE_NEW;
|
|
cmd->tgt = ha->tgt.qla_tgt;
|
|
cmd->vha = vha;
|
|
|
|
INIT_WORK(&cmd->work, qlt_do_work);
|
|
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 qla_tgt_sess *sess, uint32_t 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;
|
|
int res;
|
|
uint8_t tmr_func;
|
|
|
|
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;
|
|
|
|
switch (fn) {
|
|
case QLA_TGT_CLEAR_ACA:
|
|
ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000,
|
|
"qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx);
|
|
tmr_func = TMR_CLEAR_ACA;
|
|
break;
|
|
|
|
case QLA_TGT_TARGET_RESET:
|
|
ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001,
|
|
"qla_target(%d): TARGET_RESET received\n",
|
|
sess->vha->vp_idx);
|
|
tmr_func = TMR_TARGET_WARM_RESET;
|
|
break;
|
|
|
|
case QLA_TGT_LUN_RESET:
|
|
ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002,
|
|
"qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx);
|
|
tmr_func = TMR_LUN_RESET;
|
|
break;
|
|
|
|
case QLA_TGT_CLEAR_TS:
|
|
ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003,
|
|
"qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx);
|
|
tmr_func = TMR_CLEAR_TASK_SET;
|
|
break;
|
|
|
|
case QLA_TGT_ABORT_TS:
|
|
ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004,
|
|
"qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx);
|
|
tmr_func = TMR_ABORT_TASK_SET;
|
|
break;
|
|
#if 0
|
|
case QLA_TGT_ABORT_ALL:
|
|
ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005,
|
|
"qla_target(%d): Doing ABORT_ALL_TASKS\n",
|
|
sess->vha->vp_idx);
|
|
tmr_func = 0;
|
|
break;
|
|
|
|
case QLA_TGT_ABORT_ALL_SESS:
|
|
ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006,
|
|
"qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
|
|
sess->vha->vp_idx);
|
|
tmr_func = 0;
|
|
break;
|
|
|
|
case QLA_TGT_NEXUS_LOSS_SESS:
|
|
ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007,
|
|
"qla_target(%d): Doing NEXUS_LOSS_SESS\n",
|
|
sess->vha->vp_idx);
|
|
tmr_func = 0;
|
|
break;
|
|
|
|
case QLA_TGT_NEXUS_LOSS:
|
|
ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008,
|
|
"qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx);
|
|
tmr_func = 0;
|
|
break;
|
|
#endif
|
|
default:
|
|
ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a,
|
|
"qla_target(%d): Unknown task mgmt fn 0x%x\n",
|
|
sess->vha->vp_idx, fn);
|
|
mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
|
|
return -ENOSYS;
|
|
}
|
|
|
|
res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
|
|
if (res != 0) {
|
|
ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b,
|
|
"qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n",
|
|
sess->vha->vp_idx, res);
|
|
mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
|
|
return -EFAULT;
|
|
}
|
|
|
|
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 qla_tgt *tgt;
|
|
struct qla_tgt_sess *sess;
|
|
uint32_t lun, unpacked_lun;
|
|
int lun_size, fn;
|
|
|
|
tgt = ha->tgt.qla_tgt;
|
|
|
|
lun = a->u.isp24.fcp_cmnd.lun;
|
|
lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
|
|
fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
|
|
sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
|
|
a->u.isp24.fcp_hdr.s_id);
|
|
unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
|
|
|
|
if (!sess) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024,
|
|
"qla_target(%d): task mgmt fn 0x%x for "
|
|
"non-existant session\n", vha->vp_idx, fn);
|
|
return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
|
|
sizeof(struct atio_from_isp));
|
|
}
|
|
|
|
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 qla_tgt_sess *sess)
|
|
{
|
|
struct atio_from_isp *a = (struct atio_from_isp *)iocb;
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt_mgmt_cmd *mcmd;
|
|
uint32_t lun, 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));
|
|
|
|
lun = a->u.isp24.fcp_cmnd.lun;
|
|
unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
|
|
|
|
rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
|
|
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 qla_tgt_sess *sess;
|
|
int loop_id;
|
|
|
|
loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb);
|
|
|
|
sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id);
|
|
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(ha->tgt.qla_tgt,
|
|
QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb));
|
|
}
|
|
|
|
return __qlt_abort_task(vha, iocb, sess);
|
|
}
|
|
|
|
/*
|
|
* 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_hw_data *ha = vha->hw;
|
|
int res = 0;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
|
|
"qla_target(%d): Port ID: 0x%02x:%02x:%02x"
|
|
" ELS opcode: 0x%02x\n", vha->vp_idx, iocb->u.isp24.port_id[0],
|
|
iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[2],
|
|
iocb->u.isp24.status_subcode);
|
|
|
|
switch (iocb->u.isp24.status_subcode) {
|
|
case ELS_PLOGI:
|
|
case ELS_FLOGI:
|
|
case ELS_PRLI:
|
|
case ELS_LOGO:
|
|
case ELS_PRLO:
|
|
res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
|
|
break;
|
|
case ELS_PDISC:
|
|
case ELS_ADISC:
|
|
{
|
|
struct qla_tgt *tgt = ha->tgt.qla_tgt;
|
|
if (tgt->link_reinit_iocb_pending) {
|
|
qlt_send_notify_ack(vha, &tgt->link_reinit_iocb,
|
|
0, 0, 0, 0, 0, 0);
|
|
tgt->link_reinit_iocb_pending = 0;
|
|
}
|
|
res = 1; /* send notify ack */
|
|
break;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
|
|
{
|
|
struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
|
|
size_t first_offset = 0, rem_offset = offset, tmp = 0;
|
|
int i, sg_srr_cnt, bufflen = 0;
|
|
|
|
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023,
|
|
"Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, "
|
|
"cmd->sg_cnt: %u, direction: %d\n",
|
|
cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
|
|
|
|
/*
|
|
* FIXME: Reject non zero SRR relative offset until we can test
|
|
* this code properly.
|
|
*/
|
|
pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset);
|
|
return -1;
|
|
|
|
if (!cmd->sg || !cmd->sg_cnt) {
|
|
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055,
|
|
"Missing cmd->sg or zero cmd->sg_cnt in"
|
|
" qla_tgt_set_data_offset\n");
|
|
return -EINVAL;
|
|
}
|
|
/*
|
|
* Walk the current cmd->sg list until we locate the new sg_srr_start
|
|
*/
|
|
for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
|
|
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024,
|
|
"sg[%d]: %p page: %p, length: %d, offset: %d\n",
|
|
i, sg, sg_page(sg), sg->length, sg->offset);
|
|
|
|
if ((sg->length + tmp) > offset) {
|
|
first_offset = rem_offset;
|
|
sg_srr_start = sg;
|
|
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025,
|
|
"Found matching sg[%d], using %p as sg_srr_start, "
|
|
"and using first_offset: %zu\n", i, sg,
|
|
first_offset);
|
|
break;
|
|
}
|
|
tmp += sg->length;
|
|
rem_offset -= sg->length;
|
|
}
|
|
|
|
if (!sg_srr_start) {
|
|
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056,
|
|
"Unable to locate sg_srr_start for offset: %u\n", offset);
|
|
return -EINVAL;
|
|
}
|
|
sg_srr_cnt = (cmd->sg_cnt - i);
|
|
|
|
sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
|
|
if (!sg_srr) {
|
|
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057,
|
|
"Unable to allocate sgp\n");
|
|
return -ENOMEM;
|
|
}
|
|
sg_init_table(sg_srr, sg_srr_cnt);
|
|
sgp = &sg_srr[0];
|
|
/*
|
|
* Walk the remaining list for sg_srr_start, mapping to the newly
|
|
* allocated sg_srr taking first_offset into account.
|
|
*/
|
|
for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
|
|
if (first_offset) {
|
|
sg_set_page(sgp, sg_page(sg),
|
|
(sg->length - first_offset), first_offset);
|
|
first_offset = 0;
|
|
} else {
|
|
sg_set_page(sgp, sg_page(sg), sg->length, 0);
|
|
}
|
|
bufflen += sgp->length;
|
|
|
|
sgp = sg_next(sgp);
|
|
if (!sgp)
|
|
break;
|
|
}
|
|
|
|
cmd->sg = sg_srr;
|
|
cmd->sg_cnt = sg_srr_cnt;
|
|
cmd->bufflen = bufflen;
|
|
cmd->offset += offset;
|
|
cmd->free_sg = 1;
|
|
|
|
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg);
|
|
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n",
|
|
cmd->sg_cnt);
|
|
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n",
|
|
cmd->bufflen);
|
|
ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n",
|
|
cmd->offset);
|
|
|
|
if (cmd->sg_cnt < 0)
|
|
BUG();
|
|
|
|
if (cmd->bufflen < 0)
|
|
BUG();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd,
|
|
uint32_t srr_rel_offs, int *xmit_type)
|
|
{
|
|
int res = 0, rel_offs;
|
|
|
|
rel_offs = srr_rel_offs - cmd->offset;
|
|
ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d",
|
|
srr_rel_offs, rel_offs);
|
|
|
|
*xmit_type = QLA_TGT_XMIT_ALL;
|
|
|
|
if (rel_offs < 0) {
|
|
ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062,
|
|
"qla_target(%d): SRR rel_offs (%d) < 0",
|
|
cmd->vha->vp_idx, rel_offs);
|
|
res = -1;
|
|
} else if (rel_offs == cmd->bufflen)
|
|
*xmit_type = QLA_TGT_XMIT_STATUS;
|
|
else if (rel_offs > 0)
|
|
res = qlt_set_data_offset(cmd, rel_offs);
|
|
|
|
return res;
|
|
}
|
|
|
|
/* No locks, thread context */
|
|
static void qlt_handle_srr(struct scsi_qla_host *vha,
|
|
struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm)
|
|
{
|
|
struct imm_ntfy_from_isp *ntfy =
|
|
(struct imm_ntfy_from_isp *)&imm->imm_ntfy;
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt_cmd *cmd = sctio->cmd;
|
|
struct se_cmd *se_cmd = &cmd->se_cmd;
|
|
unsigned long flags;
|
|
int xmit_type = 0, resp = 0;
|
|
uint32_t offset;
|
|
uint16_t srr_ui;
|
|
|
|
offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
|
|
srr_ui = ntfy->u.isp24.srr_ui;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n",
|
|
cmd, srr_ui);
|
|
|
|
switch (srr_ui) {
|
|
case SRR_IU_STATUS:
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
qlt_send_notify_ack(vha, ntfy,
|
|
0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
xmit_type = QLA_TGT_XMIT_STATUS;
|
|
resp = 1;
|
|
break;
|
|
case SRR_IU_DATA_IN:
|
|
if (!cmd->sg || !cmd->sg_cnt) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063,
|
|
"Unable to process SRR_IU_DATA_IN due to"
|
|
" missing cmd->sg, state: %d\n", cmd->state);
|
|
dump_stack();
|
|
goto out_reject;
|
|
}
|
|
if (se_cmd->scsi_status != 0) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe02a,
|
|
"Rejecting SRR_IU_DATA_IN with non GOOD "
|
|
"scsi_status\n");
|
|
goto out_reject;
|
|
}
|
|
cmd->bufflen = se_cmd->data_length;
|
|
|
|
if (qlt_has_data(cmd)) {
|
|
if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
|
|
goto out_reject;
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
qlt_send_notify_ack(vha, ntfy,
|
|
0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
resp = 1;
|
|
} else {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064,
|
|
"qla_target(%d): SRR for in data for cmd "
|
|
"without them (tag %d, SCSI status %d), "
|
|
"reject", vha->vp_idx, cmd->tag,
|
|
cmd->se_cmd.scsi_status);
|
|
goto out_reject;
|
|
}
|
|
break;
|
|
case SRR_IU_DATA_OUT:
|
|
if (!cmd->sg || !cmd->sg_cnt) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065,
|
|
"Unable to process SRR_IU_DATA_OUT due to"
|
|
" missing cmd->sg\n");
|
|
dump_stack();
|
|
goto out_reject;
|
|
}
|
|
if (se_cmd->scsi_status != 0) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe02b,
|
|
"Rejecting SRR_IU_DATA_OUT"
|
|
" with non GOOD scsi_status\n");
|
|
goto out_reject;
|
|
}
|
|
cmd->bufflen = se_cmd->data_length;
|
|
|
|
if (qlt_has_data(cmd)) {
|
|
if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
|
|
goto out_reject;
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
qlt_send_notify_ack(vha, ntfy,
|
|
0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
if (xmit_type & QLA_TGT_XMIT_DATA)
|
|
qlt_rdy_to_xfer(cmd);
|
|
} else {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066,
|
|
"qla_target(%d): SRR for out data for cmd "
|
|
"without them (tag %d, SCSI status %d), "
|
|
"reject", vha->vp_idx, cmd->tag,
|
|
cmd->se_cmd.scsi_status);
|
|
goto out_reject;
|
|
}
|
|
break;
|
|
default:
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067,
|
|
"qla_target(%d): Unknown srr_ui value %x",
|
|
vha->vp_idx, srr_ui);
|
|
goto out_reject;
|
|
}
|
|
|
|
/* Transmit response in case of status and data-in cases */
|
|
if (resp)
|
|
qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
|
|
|
|
return;
|
|
|
|
out_reject:
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
qlt_send_notify_ack(vha, ntfy, 0, 0, 0,
|
|
NOTIFY_ACK_SRR_FLAGS_REJECT,
|
|
NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
|
|
NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
|
|
if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
|
|
cmd->state = QLA_TGT_STATE_DATA_IN;
|
|
dump_stack();
|
|
} else
|
|
qlt_send_term_exchange(vha, cmd, &cmd->atio, 1);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
}
|
|
|
|
static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha,
|
|
struct qla_tgt_srr_imm *imm, int ha_locked)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
unsigned long flags = 0;
|
|
|
|
if (!ha_locked)
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
|
|
qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
|
|
NOTIFY_ACK_SRR_FLAGS_REJECT,
|
|
NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
|
|
NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
|
|
|
|
if (!ha_locked)
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
kfree(imm);
|
|
}
|
|
|
|
static void qlt_handle_srr_work(struct work_struct *work)
|
|
{
|
|
struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
|
|
struct scsi_qla_host *vha = tgt->vha;
|
|
struct qla_tgt_srr_ctio *sctio;
|
|
unsigned long flags;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n",
|
|
tgt);
|
|
|
|
restart:
|
|
spin_lock_irqsave(&tgt->srr_lock, flags);
|
|
list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
|
|
struct qla_tgt_srr_imm *imm, *i, *ti;
|
|
struct qla_tgt_cmd *cmd;
|
|
struct se_cmd *se_cmd;
|
|
|
|
imm = NULL;
|
|
list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
|
|
srr_list_entry) {
|
|
if (i->srr_id == sctio->srr_id) {
|
|
list_del(&i->srr_list_entry);
|
|
if (imm) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068,
|
|
"qla_target(%d): There must be "
|
|
"only one IMM SRR per CTIO SRR "
|
|
"(IMM SRR %p, id %d, CTIO %p\n",
|
|
vha->vp_idx, i, i->srr_id, sctio);
|
|
qlt_reject_free_srr_imm(tgt->vha, i, 0);
|
|
} else
|
|
imm = i;
|
|
}
|
|
}
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a,
|
|
"IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio,
|
|
sctio->srr_id);
|
|
|
|
if (imm == NULL) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b,
|
|
"Not found matching IMM for SRR CTIO (id %d)\n",
|
|
sctio->srr_id);
|
|
continue;
|
|
} else
|
|
list_del(&sctio->srr_list_entry);
|
|
|
|
spin_unlock_irqrestore(&tgt->srr_lock, flags);
|
|
|
|
cmd = sctio->cmd;
|
|
/*
|
|
* Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
|
|
* tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
|
|
* logic..
|
|
*/
|
|
cmd->offset = 0;
|
|
if (cmd->free_sg) {
|
|
kfree(cmd->sg);
|
|
cmd->sg = NULL;
|
|
cmd->free_sg = 0;
|
|
}
|
|
se_cmd = &cmd->se_cmd;
|
|
|
|
cmd->sg_cnt = se_cmd->t_data_nents;
|
|
cmd->sg = se_cmd->t_data_sg;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c,
|
|
"SRR cmd %p (se_cmd %p, tag %d, op %x), "
|
|
"sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag,
|
|
se_cmd->t_task_cdb[0], cmd->sg_cnt, cmd->offset);
|
|
|
|
qlt_handle_srr(vha, sctio, imm);
|
|
|
|
kfree(imm);
|
|
kfree(sctio);
|
|
goto restart;
|
|
}
|
|
spin_unlock_irqrestore(&tgt->srr_lock, flags);
|
|
}
|
|
|
|
/* ha->hardware_lock supposed to be held on entry */
|
|
static void qlt_prepare_srr_imm(struct scsi_qla_host *vha,
|
|
struct imm_ntfy_from_isp *iocb)
|
|
{
|
|
struct qla_tgt_srr_imm *imm;
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt *tgt = ha->tgt.qla_tgt;
|
|
struct qla_tgt_srr_ctio *sctio;
|
|
|
|
tgt->imm_srr_id++;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n",
|
|
vha->vp_idx);
|
|
|
|
imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
|
|
if (imm != NULL) {
|
|
memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
|
|
|
|
/* IRQ is already OFF */
|
|
spin_lock(&tgt->srr_lock);
|
|
imm->srr_id = tgt->imm_srr_id;
|
|
list_add_tail(&imm->srr_list_entry,
|
|
&tgt->srr_imm_list);
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e,
|
|
"IMM NTFY SRR %p added (id %d, ui %x)\n",
|
|
imm, imm->srr_id, iocb->u.isp24.srr_ui);
|
|
if (tgt->imm_srr_id == tgt->ctio_srr_id) {
|
|
int found = 0;
|
|
list_for_each_entry(sctio, &tgt->srr_ctio_list,
|
|
srr_list_entry) {
|
|
if (sctio->srr_id == imm->srr_id) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (found) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s",
|
|
"Scheduling srr work\n");
|
|
schedule_work(&tgt->srr_work);
|
|
} else {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030,
|
|
"qla_target(%d): imm_srr_id "
|
|
"== ctio_srr_id (%d), but there is no "
|
|
"corresponding SRR CTIO, deleting IMM "
|
|
"SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
|
|
imm);
|
|
list_del(&imm->srr_list_entry);
|
|
|
|
kfree(imm);
|
|
|
|
spin_unlock(&tgt->srr_lock);
|
|
goto out_reject;
|
|
}
|
|
}
|
|
spin_unlock(&tgt->srr_lock);
|
|
} else {
|
|
struct qla_tgt_srr_ctio *ts;
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069,
|
|
"qla_target(%d): Unable to allocate SRR IMM "
|
|
"entry, SRR request will be rejected\n", vha->vp_idx);
|
|
|
|
/* IRQ is already OFF */
|
|
spin_lock(&tgt->srr_lock);
|
|
list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list,
|
|
srr_list_entry) {
|
|
if (sctio->srr_id == tgt->imm_srr_id) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031,
|
|
"CTIO SRR %p deleted (id %d)\n",
|
|
sctio, sctio->srr_id);
|
|
list_del(&sctio->srr_list_entry);
|
|
qlt_send_term_exchange(vha, sctio->cmd,
|
|
&sctio->cmd->atio, 1);
|
|
kfree(sctio);
|
|
}
|
|
}
|
|
spin_unlock(&tgt->srr_lock);
|
|
goto out_reject;
|
|
}
|
|
|
|
return;
|
|
|
|
out_reject:
|
|
qlt_send_notify_ack(vha, iocb, 0, 0, 0,
|
|
NOTIFY_ACK_SRR_FLAGS_REJECT,
|
|
NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
|
|
NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
|
|
}
|
|
|
|
/*
|
|
* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
|
|
*/
|
|
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;
|
|
|
|
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 = ha->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(vha, &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);
|
|
if (qlt_handle_task_mgmt(vha, iocb) == 0)
|
|
send_notify_ack = 0;
|
|
break;
|
|
|
|
case IMM_NTFY_ELS:
|
|
if (qlt_24xx_handle_els(vha, iocb) == 0)
|
|
send_notify_ack = 0;
|
|
break;
|
|
|
|
case IMM_NTFY_SRR:
|
|
qlt_prepare_srr_imm(vha, iocb);
|
|
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(vha, 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 void qlt_send_busy(struct scsi_qla_host *vha,
|
|
struct atio_from_isp *atio, uint16_t status)
|
|
{
|
|
struct ctio7_to_24xx *ctio24;
|
|
struct qla_hw_data *ha = vha->hw;
|
|
request_t *pkt;
|
|
struct qla_tgt_sess *sess = NULL;
|
|
|
|
sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
|
|
atio->u.isp24.fcp_hdr.s_id);
|
|
if (!sess) {
|
|
qlt_send_term_exchange(vha, NULL, atio, 1);
|
|
return;
|
|
}
|
|
/* Sending marker isn't necessary, since we called from ISR */
|
|
|
|
pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL);
|
|
if (!pkt) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06e,
|
|
"qla_target(%d): %s failed: unable to allocate "
|
|
"request packet", vha->vp_idx, __func__);
|
|
return;
|
|
}
|
|
|
|
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 = sess->loop_id;
|
|
ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
|
|
ctio24->vp_index = vha->vp_idx;
|
|
ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
|
|
ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
|
|
ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
|
|
ctio24->exchange_addr = atio->u.isp24.exchange_addr;
|
|
ctio24->u.status1.flags = (atio->u.isp24.attr << 9) |
|
|
__constant_cpu_to_le16(
|
|
CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
|
|
CTIO7_FLAGS_DONT_RET_CTIO);
|
|
/*
|
|
* 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 = swab16(atio->u.isp24.fcp_hdr.ox_id);
|
|
ctio24->u.status1.scsi_status = cpu_to_le16(status);
|
|
ctio24->u.status1.residual = get_unaligned((uint32_t *)
|
|
&atio->u.isp24.fcp_cmnd.add_cdb[
|
|
atio->u.isp24.fcp_cmnd.add_cdb_len]);
|
|
if (ctio24->u.status1.residual != 0)
|
|
ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
|
|
|
|
qla2x00_start_iocbs(vha, vha->req);
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt *tgt = ha->tgt.qla_tgt;
|
|
int rc;
|
|
|
|
if (unlikely(tgt == NULL)) {
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf039,
|
|
"ATIO pkt, but no tgt (ha %p)", ha);
|
|
return;
|
|
}
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe02c,
|
|
"qla_target(%d): ATIO pkt %p: type %02x count %02x",
|
|
vha->vp_idx, atio, atio->u.raw.entry_type,
|
|
atio->u.raw.entry_count);
|
|
/*
|
|
* In tgt_stop mode we also should allow all requests to pass.
|
|
* Otherwise, some commands can stuck.
|
|
*/
|
|
|
|
tgt->irq_cmd_count++;
|
|
|
|
switch (atio->u.raw.entry_type) {
|
|
case ATIO_TYPE7:
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe02d,
|
|
"ATIO_TYPE7 instance %d, lun %Lx, read/write %d/%d, "
|
|
"add_cdb_len %d, data_length %04x, s_id %x:%x:%x\n",
|
|
vha->vp_idx, atio->u.isp24.fcp_cmnd.lun,
|
|
atio->u.isp24.fcp_cmnd.rddata,
|
|
atio->u.isp24.fcp_cmnd.wrdata,
|
|
atio->u.isp24.fcp_cmnd.add_cdb_len,
|
|
be32_to_cpu(get_unaligned((uint32_t *)
|
|
&atio->u.isp24.fcp_cmnd.add_cdb[
|
|
atio->u.isp24.fcp_cmnd.add_cdb_len])),
|
|
atio->u.isp24.fcp_hdr.s_id[0],
|
|
atio->u.isp24.fcp_hdr.s_id[1],
|
|
atio->u.isp24.fcp_hdr.s_id[2]);
|
|
|
|
if (unlikely(atio->u.isp24.exchange_addr ==
|
|
ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe058,
|
|
"qla_target(%d): ATIO_TYPE7 "
|
|
"received with UNKNOWN exchange address, "
|
|
"sending QUEUE_FULL\n", vha->vp_idx);
|
|
qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
|
|
break;
|
|
}
|
|
if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
|
|
rc = qlt_handle_cmd_for_atio(vha, atio);
|
|
else
|
|
rc = qlt_handle_task_mgmt(vha, atio);
|
|
if (unlikely(rc != 0)) {
|
|
if (rc == -ESRCH) {
|
|
#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
|
|
qlt_send_busy(vha, atio, SAM_STAT_BUSY);
|
|
#else
|
|
qlt_send_term_exchange(vha, NULL, atio, 1);
|
|
#endif
|
|
} else {
|
|
if (tgt->tgt_stop) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe059,
|
|
"qla_target: Unable to send "
|
|
"command to target for req, "
|
|
"ignoring.\n");
|
|
} else {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe05a,
|
|
"qla_target(%d): Unable to send "
|
|
"command to target, sending BUSY "
|
|
"status.\n", vha->vp_idx);
|
|
qlt_send_busy(vha, atio, SAM_STAT_BUSY);
|
|
}
|
|
}
|
|
}
|
|
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");
|
|
qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio);
|
|
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->irq_cmd_count--;
|
|
}
|
|
|
|
/* ha->hardware_lock supposed to be held on entry */
|
|
/* called via callback from qla2xxx */
|
|
static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt *tgt = ha->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, ha);
|
|
return;
|
|
}
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe02f,
|
|
"qla_target(%d): response pkt %p: T %02x C %02x S %02x "
|
|
"handle %#x\n", vha->vp_idx, pkt, pkt->entry_type,
|
|
pkt->entry_count, pkt->entry_status, pkt->handle);
|
|
|
|
/*
|
|
* In tgt_stop mode we also should allow all requests to pass.
|
|
* Otherwise, some commands can stuck.
|
|
*/
|
|
|
|
tgt->irq_cmd_count++;
|
|
|
|
switch (pkt->entry_type) {
|
|
case CTIO_TYPE7:
|
|
{
|
|
struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt;
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe030, "CTIO_TYPE7: instance %d\n",
|
|
vha->vp_idx);
|
|
qlt_do_ctio_completion(vha, 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;
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe031,
|
|
"ACCEPT_TGT_IO instance %d status %04x "
|
|
"lun %04x read/write %d data_length %04x "
|
|
"target_id %02x rx_id %04x\n ", vha->vp_idx,
|
|
le16_to_cpu(atio->u.isp2x.status),
|
|
le16_to_cpu(atio->u.isp2x.lun),
|
|
atio->u.isp2x.execution_codes,
|
|
le32_to_cpu(atio->u.isp2x.data_length), GET_TARGET_ID(ha,
|
|
atio), atio->u.isp2x.rx_id);
|
|
if (atio->u.isp2x.status !=
|
|
__constant_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;
|
|
}
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe032,
|
|
"FCP CDB: 0x%02x, sizeof(cdb): %lu",
|
|
atio->u.isp2x.cdb[0], (unsigned long
|
|
int)sizeof(atio->u.isp2x.cdb));
|
|
|
|
rc = qlt_handle_cmd_for_atio(vha, atio);
|
|
if (unlikely(rc != 0)) {
|
|
if (rc == -ESRCH) {
|
|
#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
|
|
qlt_send_busy(vha, atio, 0);
|
|
#else
|
|
qlt_send_term_exchange(vha, NULL, atio, 1);
|
|
#endif
|
|
} else {
|
|
if (tgt->tgt_stop) {
|
|
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(vha, NULL,
|
|
atio, 1);
|
|
} else {
|
|
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(vha, atio, 0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case CONTINUE_TGT_IO_TYPE:
|
|
{
|
|
struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt;
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe033,
|
|
"CONTINUE_TGT_IO: instance %d\n", vha->vp_idx);
|
|
qlt_do_ctio_completion(vha, 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;
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe034, "CTIO_A64: instance %d\n",
|
|
vha->vp_idx);
|
|
qlt_do_ctio_completion(vha, 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 !=
|
|
__constant_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) {
|
|
struct abts_resp_from_24xx_fw *entry =
|
|
(struct abts_resp_from_24xx_fw *)pkt;
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe038,
|
|
"ABTS_RESP_24XX: compl_status %x\n",
|
|
entry->compl_status);
|
|
tgt->abts_resp_expected--;
|
|
if (le16_to_cpu(entry->compl_status) !=
|
|
ABTS_RESP_COMPL_SUCCESS) {
|
|
if ((entry->error_subcode1 == 0x1E) &&
|
|
(entry->error_subcode2 == 0)) {
|
|
/*
|
|
* We've got a race here: aborted
|
|
* exchange not terminated, i.e.
|
|
* response for the aborted command was
|
|
* sent between the abort request was
|
|
* received and processed.
|
|
* Unfortunately, the firmware has a
|
|
* silly requirement that all aborted
|
|
* exchanges must be explicitely
|
|
* terminated, otherwise it refuses to
|
|
* send responses for the abort
|
|
* requests. So, we have to
|
|
* (re)terminate the exchange and retry
|
|
* the abort response.
|
|
*/
|
|
qlt_24xx_retry_term_exchange(vha,
|
|
entry);
|
|
} 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);
|
|
}
|
|
} 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;
|
|
}
|
|
|
|
tgt->irq_cmd_count--;
|
|
}
|
|
|
|
/*
|
|
* 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 = ha->tgt.qla_tgt;
|
|
int login_code;
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe039,
|
|
"scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n",
|
|
vha->host_no, atomic_read(&vha->loop_state), vha->flags.init_done,
|
|
ha->operating_mode, ha->current_topology);
|
|
|
|
if (!ha->tgt.tgt_ops)
|
|
return;
|
|
|
|
if (unlikely(tgt == NULL)) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe03a,
|
|
"ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha);
|
|
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.
|
|
*/
|
|
|
|
tgt->irq_cmd_count++;
|
|
|
|
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,
|
|
le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
|
|
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
|
|
if (tgt->link_reinit_iocb_pending) {
|
|
qlt_send_notify_ack(vha, (void *)&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,
|
|
le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
|
|
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
|
|
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,
|
|
le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
|
|
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
|
|
|
|
login_code = le16_to_cpu(mailbox[2]);
|
|
if (login_code == 0x4)
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e,
|
|
"Async MB 2: Got PLOGI Complete\n");
|
|
else if (login_code == 0x7)
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f,
|
|
"Async MB 2: Port Logged Out\n");
|
|
break;
|
|
|
|
default:
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040,
|
|
"qla_target(%d): Async event %#x occurred: "
|
|
"ignore (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx,
|
|
code, le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]),
|
|
le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3]));
|
|
break;
|
|
}
|
|
|
|
tgt->irq_cmd_count--;
|
|
}
|
|
|
|
static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha,
|
|
uint16_t loop_id)
|
|
{
|
|
fc_port_t *fcport;
|
|
int rc;
|
|
|
|
fcport = kzalloc(sizeof(*fcport), 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;
|
|
}
|
|
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf041, "loop_id %d", loop_id);
|
|
|
|
fcport->loop_id = loop_id;
|
|
|
|
rc = qla2x00_get_port_database(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;
|
|
}
|
|
|
|
return fcport;
|
|
}
|
|
|
|
/* Must be called under tgt_mutex */
|
|
static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha,
|
|
uint8_t *s_id)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt_sess *sess = NULL;
|
|
fc_port_t *fcport = NULL;
|
|
int rc, global_resets;
|
|
uint16_t loop_id = 0;
|
|
|
|
retry:
|
|
global_resets = atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count);
|
|
|
|
rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
|
|
if (rc != 0) {
|
|
if ((s_id[0] == 0xFF) &&
|
|
(s_id[1] == 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[0], s_id[1], s_id[2]);
|
|
} else
|
|
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071,
|
|
"qla_target(%d): Unable to find "
|
|
"initiator with S_ID %x:%x:%x",
|
|
vha->vp_idx, s_id[0], s_id[1],
|
|
s_id[2]);
|
|
return NULL;
|
|
}
|
|
|
|
fcport = qlt_get_port_database(vha, loop_id);
|
|
if (!fcport)
|
|
return NULL;
|
|
|
|
if (global_resets !=
|
|
atomic_read(&ha->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(&ha->tgt.qla_tgt->tgt_global_resets_count));
|
|
goto retry;
|
|
}
|
|
|
|
sess = qlt_create_sess(vha, fcport, true);
|
|
|
|
kfree(fcport);
|
|
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 qla_tgt_sess *sess = NULL;
|
|
unsigned long flags;
|
|
uint32_t be_s_id;
|
|
uint8_t s_id[3];
|
|
int rc;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
|
|
if (tgt->tgt_stop)
|
|
goto out_term;
|
|
|
|
s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
|
|
s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
|
|
s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
|
|
|
|
sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
|
|
(unsigned char *)&be_s_id);
|
|
if (!sess) {
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
mutex_lock(&ha->tgt.tgt_mutex);
|
|
sess = qlt_make_local_sess(vha, s_id);
|
|
/* sess has got an extra creation ref */
|
|
mutex_unlock(&ha->tgt.tgt_mutex);
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
if (!sess)
|
|
goto out_term;
|
|
} else {
|
|
kref_get(&sess->se_sess->sess_kref);
|
|
}
|
|
|
|
if (tgt->tgt_stop)
|
|
goto out_term;
|
|
|
|
rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess);
|
|
if (rc != 0)
|
|
goto out_term;
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
ha->tgt.tgt_ops->put_sess(sess);
|
|
return;
|
|
|
|
out_term:
|
|
qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
if (sess)
|
|
ha->tgt.tgt_ops->put_sess(sess);
|
|
}
|
|
|
|
static void qlt_tmr_work(struct qla_tgt *tgt,
|
|
struct qla_tgt_sess_work_param *prm)
|
|
{
|
|
struct atio_from_isp *a = &prm->tm_iocb2;
|
|
struct scsi_qla_host *vha = tgt->vha;
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt_sess *sess = NULL;
|
|
unsigned long flags;
|
|
uint8_t *s_id = NULL; /* to hide compiler warnings */
|
|
int rc;
|
|
uint32_t lun, unpacked_lun;
|
|
int lun_size, fn;
|
|
void *iocb;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
|
|
if (tgt->tgt_stop)
|
|
goto out_term;
|
|
|
|
s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
|
|
sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id);
|
|
if (!sess) {
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
mutex_lock(&ha->tgt.tgt_mutex);
|
|
sess = qlt_make_local_sess(vha, s_id);
|
|
/* sess has got an extra creation ref */
|
|
mutex_unlock(&ha->tgt.tgt_mutex);
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
if (!sess)
|
|
goto out_term;
|
|
} else {
|
|
kref_get(&sess->se_sess->sess_kref);
|
|
}
|
|
|
|
iocb = a;
|
|
lun = a->u.isp24.fcp_cmnd.lun;
|
|
lun_size = sizeof(lun);
|
|
fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
|
|
unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
|
|
|
|
rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
|
|
if (rc != 0)
|
|
goto out_term;
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
ha->tgt.tgt_ops->put_sess(sess);
|
|
return;
|
|
|
|
out_term:
|
|
qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
if (sess)
|
|
ha->tgt.tgt_ops->put_sess(sess);
|
|
}
|
|
|
|
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;
|
|
case QLA_TGT_SESS_WORK_TM:
|
|
qlt_tmr_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;
|
|
|
|
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)", base_vha->host_no, ha);
|
|
|
|
BUG_ON((ha->tgt.qla_tgt != NULL) || (ha->tgt.tgt_ops != 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;
|
|
}
|
|
|
|
if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
|
|
base_vha->host->hostt->supported_mode |= MODE_TARGET;
|
|
|
|
tgt->ha = ha;
|
|
tgt->vha = base_vha;
|
|
init_waitqueue_head(&tgt->waitQ);
|
|
INIT_LIST_HEAD(&tgt->sess_list);
|
|
INIT_LIST_HEAD(&tgt->del_sess_list);
|
|
INIT_DELAYED_WORK(&tgt->sess_del_work,
|
|
(void (*)(struct work_struct *))qlt_del_sess_work_fn);
|
|
spin_lock_init(&tgt->sess_work_lock);
|
|
INIT_WORK(&tgt->sess_work, qlt_sess_work_fn);
|
|
INIT_LIST_HEAD(&tgt->sess_works_list);
|
|
spin_lock_init(&tgt->srr_lock);
|
|
INIT_LIST_HEAD(&tgt->srr_ctio_list);
|
|
INIT_LIST_HEAD(&tgt->srr_imm_list);
|
|
INIT_WORK(&tgt->srr_work, qlt_handle_srr_work);
|
|
atomic_set(&tgt->tgt_global_resets_count, 0);
|
|
|
|
ha->tgt.qla_tgt = tgt;
|
|
|
|
ql_dbg(ql_dbg_tgt, base_vha, 0xe067,
|
|
"qla_target(%d): using 64 Bit PCI addressing",
|
|
base_vha->vp_idx);
|
|
tgt->tgt_enable_64bit_addr = 1;
|
|
/* 3 is reserved */
|
|
tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
|
|
tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
|
|
tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
|
|
|
|
mutex_lock(&qla_tgt_mutex);
|
|
list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
|
|
mutex_unlock(&qla_tgt_mutex);
|
|
|
|
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 (!ha->tgt.qla_tgt)
|
|
return 0;
|
|
|
|
mutex_lock(&qla_tgt_mutex);
|
|
list_del(&ha->tgt.qla_tgt->tgt_list_entry);
|
|
mutex_unlock(&qla_tgt_mutex);
|
|
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)",
|
|
vha->host_no, ha);
|
|
qlt_release(ha->tgt.qla_tgt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
|
|
unsigned char *b)
|
|
{
|
|
int i;
|
|
|
|
pr_debug("qla2xxx HW vha->node_name: ");
|
|
for (i = 0; i < WWN_SIZE; i++)
|
|
pr_debug("%02x ", vha->node_name[i]);
|
|
pr_debug("\n");
|
|
pr_debug("qla2xxx HW vha->port_name: ");
|
|
for (i = 0; i < WWN_SIZE; i++)
|
|
pr_debug("%02x ", vha->port_name[i]);
|
|
pr_debug("\n");
|
|
|
|
pr_debug("qla2xxx passed configfs WWPN: ");
|
|
put_unaligned_be64(wwpn, b);
|
|
for (i = 0; i < WWN_SIZE; i++)
|
|
pr_debug("%02x ", b[i]);
|
|
pr_debug("\n");
|
|
}
|
|
|
|
/**
|
|
* qla_tgt_lport_register - register lport with external module
|
|
*
|
|
* @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
|
|
* @wwpn: Passwd FC target WWPN
|
|
* @callback: lport initialization callback for tcm_qla2xxx code
|
|
* @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
|
|
*/
|
|
int qlt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn,
|
|
int (*callback)(struct scsi_qla_host *), void *target_lport_ptr)
|
|
{
|
|
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 (ha->tgt.tgt_ops != NULL)
|
|
continue;
|
|
|
|
if (!(host->hostt->supported_mode & MODE_TARGET))
|
|
continue;
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
if (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;
|
|
}
|
|
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, wwpn, b);
|
|
|
|
if (memcmp(vha->port_name, b, WWN_SIZE)) {
|
|
scsi_host_put(host);
|
|
continue;
|
|
}
|
|
/*
|
|
* Setup passed parameters ahead of invoking callback
|
|
*/
|
|
ha->tgt.tgt_ops = qla_tgt_ops;
|
|
ha->tgt.target_lport_ptr = target_lport_ptr;
|
|
rc = (*callback)(vha);
|
|
if (rc != 0) {
|
|
ha->tgt.tgt_ops = NULL;
|
|
ha->tgt.target_lport_ptr = NULL;
|
|
}
|
|
mutex_unlock(&qla_tgt_mutex);
|
|
return rc;
|
|
}
|
|
mutex_unlock(&qla_tgt_mutex);
|
|
|
|
return -ENODEV;
|
|
}
|
|
EXPORT_SYMBOL(qlt_lport_register);
|
|
|
|
/**
|
|
* qla_tgt_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
|
|
*/
|
|
ha->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)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
|
|
switch (ql2x_ini_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_TARGET;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (ha->tgt.ini_mode_force_reverse)
|
|
qla_reverse_ini_mode(vha);
|
|
}
|
|
|
|
/* Must be called under HW lock */
|
|
void qlt_clear_mode(struct scsi_qla_host *vha)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
|
|
switch (ql2x_ini_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:
|
|
vha->host->active_mode &= ~MODE_TARGET;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (ha->tgt.ini_mode_force_reverse)
|
|
qla_reverse_ini_mode(vha);
|
|
}
|
|
|
|
/*
|
|
* 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 = ha->tgt.qla_tgt;
|
|
unsigned long flags;
|
|
|
|
if (!tgt) {
|
|
ql_dbg(ql_dbg_tgt, vha, 0xe069,
|
|
"Unable to locate qla_tgt pointer from"
|
|
" struct qla_hw_data\n");
|
|
dump_stack();
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(&ha->hardware_lock, flags);
|
|
tgt->tgt_stopped = 0;
|
|
qlt_set_mode(vha);
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
|
|
qla2xxx_wake_dpc(vha);
|
|
qla2x00_wait_for_hba_online(vha);
|
|
}
|
|
EXPORT_SYMBOL(qlt_enable_vha);
|
|
|
|
/*
|
|
* qla_tgt_disable_vha - NO LOCK HELD
|
|
*
|
|
* Disable Target Mode and reset the adapter
|
|
*/
|
|
void
|
|
qlt_disable_vha(struct scsi_qla_host *vha)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct qla_tgt *tgt = ha->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);
|
|
qla2x00_wait_for_hba_online(vha);
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
if (!qla_tgt_mode_enabled(vha))
|
|
return;
|
|
|
|
mutex_init(&ha->tgt.tgt_mutex);
|
|
mutex_init(&ha->tgt.tgt_host_action_mutex);
|
|
|
|
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;
|
|
}
|
|
|
|
void
|
|
qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req)
|
|
{
|
|
/*
|
|
* FC-4 Feature bit 0 indicates target functionality to the name server.
|
|
*/
|
|
if (qla_tgt_mode_enabled(vha)) {
|
|
if (qla_ini_mode_enabled(vha))
|
|
ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1;
|
|
else
|
|
ct_req->req.rff_id.fc4_feature = BIT_0;
|
|
} else if (qla_ini_mode_enabled(vha)) {
|
|
ct_req->req.rff_id.fc4_feature = BIT_1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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_tgt_mode_enabled(vha))
|
|
return;
|
|
|
|
for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) {
|
|
pkt->u.raw.signature = 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)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct atio_from_isp *pkt;
|
|
int cnt, i;
|
|
|
|
if (!vha->flags.online)
|
|
return;
|
|
|
|
while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) {
|
|
pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr;
|
|
cnt = pkt->u.raw.entry_count;
|
|
|
|
qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt);
|
|
|
|
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 = 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;
|
|
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 (IS_ATIO_MSIX_CAPABLE(ha)) {
|
|
struct qla_msix_entry *msix = &ha->msix_entries[2];
|
|
struct init_cb_24xx *icb = (struct init_cb_24xx *)ha->init_cb;
|
|
|
|
icb->msix_atio = cpu_to_le16(msix->entry);
|
|
ql_dbg(ql_dbg_init, vha, 0xf072,
|
|
"Registering ICB vector 0x%x for atio que.\n",
|
|
msix->entry);
|
|
}
|
|
}
|
|
|
|
void
|
|
qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
|
|
if (qla_tgt_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;
|
|
}
|
|
|
|
nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
|
|
|
|
/* Enable target mode */
|
|
nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
|
|
|
|
/* Disable ini mode, if requested */
|
|
if (!qla_ini_mode_enabled(vha))
|
|
nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5);
|
|
|
|
/* Disable Full Login after LIP */
|
|
nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
|
|
/* Enable initial LIP */
|
|
nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
|
|
/* Enable FC tapes support */
|
|
nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
|
|
/* Disable Full Login after LIP */
|
|
nv->host_p &= __constant_cpu_to_le32(~BIT_10);
|
|
/* Enable target PRLI control */
|
|
nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
|
|
} 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;
|
|
}
|
|
|
|
/* out-of-order frames reassembly */
|
|
nv->firmware_options_3 |= BIT_6|BIT_9;
|
|
|
|
if (ha->tgt.enable_class_2) {
|
|
if (vha->flags.init_done)
|
|
fc_host_supported_classes(vha->host) =
|
|
FC_COS_CLASS2 | FC_COS_CLASS3;
|
|
|
|
nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
|
|
} else {
|
|
if (vha->flags.init_done)
|
|
fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
|
|
|
|
nv->firmware_options_2 &= ~__constant_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 (ha->tgt.node_name_set) {
|
|
memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE);
|
|
icb->firmware_options_1 |= __constant_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;
|
|
|
|
if (!QLA_TGT_MODE_ENABLED())
|
|
return;
|
|
|
|
if (qla_tgt_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;
|
|
}
|
|
|
|
nv->exchange_count = __constant_cpu_to_le16(0xFFFF);
|
|
|
|
/* Enable target mode */
|
|
nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4);
|
|
|
|
/* Disable ini mode, if requested */
|
|
if (!qla_ini_mode_enabled(vha))
|
|
nv->firmware_options_1 |=
|
|
__constant_cpu_to_le32(BIT_5);
|
|
|
|
/* Disable Full Login after LIP */
|
|
nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
|
|
/* Enable initial LIP */
|
|
nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9);
|
|
/* Enable FC tapes support */
|
|
nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
|
|
/* Disable Full Login after LIP */
|
|
nv->host_p &= __constant_cpu_to_le32(~BIT_10);
|
|
/* Enable target PRLI control */
|
|
nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
|
|
} 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;
|
|
}
|
|
|
|
/* out-of-order frames reassembly */
|
|
nv->firmware_options_3 |= BIT_6|BIT_9;
|
|
|
|
if (ha->tgt.enable_class_2) {
|
|
if (vha->flags.init_done)
|
|
fc_host_supported_classes(vha->host) =
|
|
FC_COS_CLASS2 | FC_COS_CLASS3;
|
|
|
|
nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8);
|
|
} else {
|
|
if (vha->flags.init_done)
|
|
fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
|
|
|
|
nv->firmware_options_2 &= ~__constant_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 |= __constant_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 */
|
|
}
|
|
|
|
int
|
|
qlt_24xx_process_response_error(struct scsi_qla_host *vha,
|
|
struct sts_entry_24xx *pkt)
|
|
{
|
|
switch (pkt->entry_type) {
|
|
case ABTS_RECV_24XX:
|
|
case ABTS_RESP_24XX:
|
|
case CTIO_TYPE7:
|
|
case NOTIFY_ACK_TYPE:
|
|
return 1;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void
|
|
qlt_modify_vp_config(struct scsi_qla_host *vha,
|
|
struct vp_config_entry_24xx *vpmod)
|
|
{
|
|
if (qla_tgt_mode_enabled(vha))
|
|
vpmod->options_idx1 &= ~BIT_5;
|
|
/* Disable ini mode, if requested */
|
|
if (!qla_ini_mode_enabled(vha))
|
|
vpmod->options_idx1 &= ~BIT_4;
|
|
}
|
|
|
|
void
|
|
qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
|
|
{
|
|
if (!QLA_TGT_MODE_ENABLED())
|
|
return;
|
|
|
|
if (ha->mqenable || IS_QLA83XX(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(&ha->tgt.tgt_mutex);
|
|
mutex_init(&ha->tgt.tgt_host_action_mutex);
|
|
qlt_clear_mode(base_vha);
|
|
}
|
|
|
|
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->hardware_lock, flags);
|
|
|
|
qlt_24xx_process_atio_queue(vha);
|
|
qla24xx_process_response_queue(vha, rsp);
|
|
|
|
spin_unlock_irqrestore(&ha->hardware_lock, flags);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
int
|
|
qlt_mem_alloc(struct qla_hw_data *ha)
|
|
{
|
|
if (!QLA_TGT_MODE_ENABLED())
|
|
return 0;
|
|
|
|
ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
|
|
MAX_MULTI_ID_FABRIC, GFP_KERNEL);
|
|
if (!ha->tgt.tgt_vp_map)
|
|
return -ENOMEM;
|
|
|
|
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) {
|
|
kfree(ha->tgt.tgt_vp_map);
|
|
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);
|
|
}
|
|
kfree(ha->tgt.tgt_vp_map);
|
|
}
|
|
|
|
/* vport_slock to be held by the caller */
|
|
void
|
|
qlt_update_vp_map(struct scsi_qla_host *vha, int cmd)
|
|
{
|
|
if (!QLA_TGT_MODE_ENABLED())
|
|
return;
|
|
|
|
switch (cmd) {
|
|
case SET_VP_IDX:
|
|
vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha;
|
|
break;
|
|
case SET_AL_PA:
|
|
vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx;
|
|
break;
|
|
case RESET_VP_IDX:
|
|
vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL;
|
|
break;
|
|
case RESET_AL_PA:
|
|
vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
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
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
int __init qlt_init(void)
|
|
{
|
|
int ret;
|
|
|
|
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_cmd_cachep = kmem_cache_create("qla_tgt_cmd_cachep",
|
|
sizeof(struct qla_tgt_cmd), __alignof__(struct qla_tgt_cmd), 0,
|
|
NULL);
|
|
if (!qla_tgt_cmd_cachep) {
|
|
ql_log(ql_log_fatal, NULL, 0xe06c,
|
|
"kmem_cache_create for qla_tgt_cmd_cachep failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
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, 0xe06d,
|
|
"kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
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_mgmt_cmd_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_mgmt_cmd_cachep:
|
|
kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
|
|
out:
|
|
kmem_cache_destroy(qla_tgt_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_mgmt_cmd_cachep);
|
|
kmem_cache_destroy(qla_tgt_cmd_cachep);
|
|
}
|