2011-04-05 05:12:04

by Nicholas A. Bellinger

Subject: [RFC-v3 0/3] qla2xxx LLD target mode + tcm_qla2xxx fabric module

From: Nicholas Bellinger <[email protected]>

Greetings James, Christoph, Hannes, and Co,

Attached is the third RFC series for adding qla2xxx LLD target mode support
into mainline v8.03.07.00 @ .39-rc1, along with the accompanying tcm_qla2xxx.ko
fabric module cut against mainline target v4.0 infrastructure. This series has
been broken up into reviewable sections and should be considered a 'for-40' item.

Many thanks to Andrew Vasquez for his initial off-list review of RFC-v2.
This updated series contains a number of cleanups + removal of unnecessary
code recommended by Andrew for enabling target mode support, and other
misc code maintainibility improvements.

So at this point with the functioning code, we would like to come to a
consensus with linux-scsi folks about how the explict qla2xxx target mode LLD
and tcm_qla2xxx fabric module 'split' should look, and how it will be accepted
into distros and maintained for mainline moving forward. The Qlogic folks
(Madhu and Andrew) have expressed interest that they would like to eventually
own maintainence for the target pieces inside of qla2xxx, but this currently
ends up being decent chunk of code in qla_target.c that may otherwise better
reside in tcm_qla2xxx code.

So that said, I would really like to get opinions from Christoph, Hannes,
and Mike about how the 'existing LLD / tcm_fabric.ko split' can best done
for mainline, and some input from kernel distro folks would also be useful
here. Comments here please upstream linux-scsi folks..?

An overview of the current status, todo list, mini-howto and running layout
from /sys/kernel/config/target/qla2xxx/ are available here:

http://www.linux-iscsi.org/index.php/Qlogic
http://www.linux-iscsi.org/wiki/QLogic/configFS

The next major item will be proper target mode NPIV support for >= 24xx series
adapters using the included qla2xxx_npiv fabric skeleton, and which will be
enabled in the next round of review in RFC-v4.

Thanks!

--nab

Nicholas Bellinger (3):
qla2xxx: Add target mode support into 2xxx series LLD code
qla2xxx: Enable 2xxx series LLD target mode support
tcm_qla2xxx: Add HW target mode I/O, control and TMR path code

drivers/scsi/qla2xxx/Makefile | 4 +-
drivers/scsi/qla2xxx/qla_attr.c | 5 +-
drivers/scsi/qla2xxx/qla_dbg.h | 34 +
drivers/scsi/qla2xxx/qla_def.h | 63 +-
drivers/scsi/qla2xxx/qla_gbl.h | 7 +
drivers/scsi/qla2xxx/qla_gs.c | 4 +-
drivers/scsi/qla2xxx/qla_init.c | 79 +-
drivers/scsi/qla2xxx/qla_iocb.c | 105 +-
drivers/scsi/qla2xxx/qla_isr.c | 83 +-
drivers/scsi/qla2xxx/qla_mbx.c | 122 +-
drivers/scsi/qla2xxx/qla_mid.c | 21 +-
drivers/scsi/qla2xxx/qla_os.c | 107 +-
drivers/scsi/qla2xxx/qla_target.c | 5556 +++++++++++++++++++++
drivers/scsi/qla2xxx/qla_target.h | 1137 +++++
drivers/target/Kconfig | 1 +
drivers/target/Makefile | 1 +
drivers/target/tcm_qla2xxx/Kconfig | 7 +
drivers/target/tcm_qla2xxx/Makefile | 6 +
drivers/target/tcm_qla2xxx/tcm_qla2xxx_base.h | 102 +
drivers/target/tcm_qla2xxx/tcm_qla2xxx_configfs.c | 1439 ++++++
drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.c | 853 ++++
drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.h | 53 +
22 files changed, 9750 insertions(+), 39 deletions(-)
create mode 100644 drivers/scsi/qla2xxx/qla_target.c
create mode 100644 drivers/scsi/qla2xxx/qla_target.h
create mode 100644 drivers/target/tcm_qla2xxx/Kconfig
create mode 100644 drivers/target/tcm_qla2xxx/Makefile
create mode 100644 drivers/target/tcm_qla2xxx/tcm_qla2xxx_base.h
create mode 100644 drivers/target/tcm_qla2xxx/tcm_qla2xxx_configfs.c
create mode 100644 drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.c
create mode 100644 drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.h

--
1.7.4.3

2011-04-05 05:12:22

by Nicholas A. Bellinger

Subject: [RFC-v3 1/3] qla2xxx: Add target mode support into 2xxx series LLD code

From: Nicholas Bellinger <[email protected]>

This patch adds support for qla2xxx series target mode using a new
target fabric module API based on SCST qla2x00t LLD code using a
8.02.01-k4 version, and refactors ~80% of the qla2x00t module code into qla2xxx
LLD code at qla_target.c using modern 8.03.07.00 and v4.0 target/configfs
infrastructure presented as a seperate patch to tcm_qla2xxx.ko This patch
introduces a new target fabric module API in qla_target.h here:

struct qla_target_template {

int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *, uint32_t,
uint32_t, int, int, int);
int (*handle_data)(struct qla_tgt_cmd *);
int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t);
void (*free_cmd)(struct qla_tgt_cmd *);
void (*free_session)(struct qla_tgt_sess *);

int (*check_initiator_node_acl)(struct scsi_qla_host *, unsigned char *,
void *, uint8_t *, uint16_t);
struct qla_tgt_sess *(*find_sess_by_loop_id)(struct scsi_qla_host *,
const uint16_t);
struct qla_tgt_sess *(*find_sess_by_s_id)(struct scsi_qla_host *,
const uint8_t *);
};

This is called via scsi_qla_host_t->hw->qla2x_tmpl within both existing
qla2xxx LLD and new qla_target.c code to process LLD internal target
mode operations and tcm_qla2xxx fabric module specific operations for
callers within qla_target.c.

There are still a handful of TODO items including proper FC SRR support
(service retransmission request) and properly handling nexus reset
and tcm_qla2xxx module shutdown+restart w/o having to reload qla2xxx.ko

Signed-off-by: Nicholas A. Bellinger <[email protected]>
---
drivers/scsi/qla2xxx/qla_target.c | 5556 +++++++++++++++++++++++++++++++++++++
drivers/scsi/qla2xxx/qla_target.h | 1137 ++++++++
2 files changed, 6693 insertions(+), 0 deletions(-)
create mode 100644 drivers/scsi/qla2xxx/qla_target.c
create mode 100644 drivers/scsi/qla2xxx/qla_target.h

diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
new file mode 100644
index 0000000..713e684
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -0,0 +1,5556 @@
+/*
+ * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
+ *
+ * based on qla2x00t.c code:
+ *
+ * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <[email protected]>
+ * Copyright (C) 2004 - 2005 Leonid Stoljar
+ * Copyright (C) 2006 Nathaniel Clark <[email protected]>
+ * Copyright (C) 2006 - 2010 ID7 Ltd.
+ *
+ * Forward port and refactoring to modern qla2xxx and target/configfs
+ *
+ * Copyright (C) 2010-2011 Nicholas A. Bellinger <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2
+ * of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/version.h>
+#include <linux/blkdev.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/list.h>
+#include <asm/unaligned.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+#include <target/target_core_base.h>
+#include <target/target_core_transport.h>
+#include <target/target_core_fabric_ops.h>
+#include <target/target_core_tmr.h>
+
+#include "qla_def.h"
+#include "qla_target.h"
+
+static char *qlini_mode = QLA2X_INI_MODE_STR_EXCLUSIVE;
+module_param(qlini_mode, charp, S_IRUGO);
+MODULE_PARM_DESC(qlini_mode,
+ "Determines when initiator mode will be enabled. Possible values: "
+ "\"exclusive\" (default) - initiator mode will be enabled on load, "
+ "disabled on enabling target mode and then on disabling target mode "
+ "enabled back; "
+ "\"disabled\" - initiator mode will never be enabled; "
+ "\"enabled\" - initiator mode will always stay enabled.");
+
+static int ql2x_ini_mode = QLA2X_INI_MODE_EXCLUSIVE;
+
+/*
+ * From scsi/fc/fc_fcp.h
+ */
+enum fcp_resp_rsp_codes {
+ FCP_TMF_CMPL = 0,
+ FCP_DATA_LEN_INVALID = 1,
+ FCP_CMND_FIELDS_INVALID = 2,
+ FCP_DATA_PARAM_MISMATCH = 3,
+ FCP_TMF_REJECTED = 4,
+ FCP_TMF_FAILED = 5,
+ FCP_TMF_INVALID_LUN = 9,
+};
+
+/*
+ * fc_pri_ta from scsi/fc/fc_fcp.h
+ */
+#define FCP_PTA_SIMPLE 0 /* simple task attribute */
+#define FCP_PTA_HEADQ 1 /* head of queue task attribute */
+#define FCP_PTA_ORDERED 2 /* ordered task attribute */
+#define FCP_PTA_ACA 4 /* auto. contigent allegiance */
+#define FCP_PTA_MASK 7 /* mask for task attribute field */
+#define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */
+#define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */
+
+/*
+ * This driver calls qla2x00_req_pkt() and qla2x00_issue_marker(), which
+ * must be called under HW lock and could unlock/lock it inside.
+ * It isn't an issue, since in the current implementation on the time when
+ * those functions are called:
+ *
+ * - Either context is IRQ and only IRQ handler can modify HW data,
+ * including rings related fields,
+ *
+ * - Or access to target mode variables from struct qla_tgt doesn't
+ * cross those functions boundaries, except tgt_stop, which
+ * additionally protected by irq_cmd_count.
+ */
+
+static int __qla24xx_xmit_response(struct qla_tgt_cmd *, int, uint8_t);
+
+/* Predefs for callbacks handed to qla2xxx LLD */
+static void qla24xx_atio_pkt(struct scsi_qla_host *ha, atio7_entry_t *pkt);
+static void qla_tgt_response_pkt(struct scsi_qla_host *ha, response_t *pkt);
+static int qla_tgt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun,
+ int fn, void *iocb, int flags);
+static void qla2xxx_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd *cmd,
+ atio_entry_t *atio, int ha_locked);
+static void qla24xx_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd *cmd,
+ atio7_entry_t *atio, int ha_locked);
+static void qla_tgt_reject_free_srr_imm(struct scsi_qla_host *ha, struct srr_imm *imm,
+ int ha_lock);
+static int qla_tgt_cut_cmd_data_head(struct qla_tgt_cmd *cmd, unsigned int offset);
+static void qla_tgt_clear_tgt_db(struct qla_tgt *tgt, bool local_only);
+static int qla_tgt_unreg_sess(struct qla_tgt_sess *sess);
+
+/* Used by qla_target.c code to decode SCSI LUN to TCM unpacked_lun */
+static uint32_t qla_tgt_unpack_lun(unsigned char *p);
+
+/*
+ * Global Variables
+ */
+static struct kmem_cache *qla_tgt_cmd_cachep;
+static struct kmem_cache *qla_tgt_mgmt_cmd_cachep;
+static mempool_t *qla_tgt_mgmt_cmd_mempool;
+
+static DECLARE_RWSEM(qla_tgt_unreg_rwsem);
+
+/*
+ * From qla2xxx/qla_iobc.c and used by various qla_target.c logic
+ */
+extern request_t *qla2x00_req_pkt(struct scsi_qla_host *);
+
+/* ha->hardware_lock supposed to be held on entry */
+static inline void qla_tgt_sess_get(struct qla_tgt_sess *sess)
+{
+ sess->sess_ref++;
+ DEBUG21(qla_printk(KERN_INFO, sess->vha->hw, "sess %p, new sess_ref %d\n",
+ sess, sess->sess_ref));
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+void qla_tgt_sess_put(struct qla_tgt_sess *sess)
+{
+ DEBUG21(qla_printk(KERN_INFO, sess->vha->hw, "sess %p, new sess_ref %d\n",
+ sess, sess->sess_ref-1));
+ BUG_ON(sess->sess_ref == 0);
+
+ sess->sess_ref--;
+ if (sess->sess_ref == 0)
+ qla_tgt_unreg_sess(sess);
+}
+EXPORT_SYMBOL(qla_tgt_sess_put);
+
+/* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */
+static struct qla_tgt_sess *qla_tgt_find_sess_by_port_name(
+ struct qla_tgt *tgt,
+ const uint8_t *port_name)
+{
+ struct qla_tgt_sess *sess;
+
+ list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
+ if ((sess->port_name[0] == port_name[0]) &&
+ (sess->port_name[1] == port_name[1]) &&
+ (sess->port_name[2] == port_name[2]) &&
+ (sess->port_name[3] == port_name[3]) &&
+ (sess->port_name[4] == port_name[4]) &&
+ (sess->port_name[5] == port_name[5]) &&
+ (sess->port_name[6] == port_name[6]) &&
+ (sess->port_name[7] == port_name[7]))
+ return sess;
+ }
+
+ return NULL;
+}
+
+/* Might release hw lock, then reaquire!! */
+static inline int qla_tgt_issue_marker(struct scsi_qla_host *vha, int vha_locked)
+{
+ /* Send marker if required */
+ if (unlikely(vha->marker_needed != 0)) {
+ int rc = qla2x00_issue_marker(vha, vha_locked);
+ if (rc != QLA_SUCCESS) {
+ printk(KERN_ERR "qla_target(%d): issue_marker() "
+ "failed\n", vha->vp_idx);
+ }
+ return rc;
+ }
+ return QLA_SUCCESS;
+}
+
+static inline
+struct scsi_qla_host *qla_tgt_find_host_by_d_id(struct scsi_qla_host *vha, uint8_t *d_id)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0]))
+ return NULL;
+
+ if (vha->d_id.b.al_pa == d_id[2])
+ return vha;
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ uint8_t vp_idx;
+ BUG_ON(ha->tgt_vp_map == NULL);
+ vp_idx = ha->tgt_vp_map[d_id[2]].idx;
+ if (likely(test_bit(vp_idx, ha->vp_idx_map)))
+ return ha->tgt_vp_map[vp_idx].vha;
+ }
+
+ return NULL;
+}
+
+static inline
+struct scsi_qla_host *qla_tgt_find_host_by_vp_idx(struct scsi_qla_host *vha, uint16_t vp_idx)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ if (vha->vp_idx == vp_idx)
+ return vha;
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ BUG_ON(ha->tgt_vp_map == NULL);
+ if (likely(test_bit(vp_idx, ha->vp_idx_map)))
+ return ha->tgt_vp_map[vp_idx].vha;
+ }
+
+ return NULL;
+}
+
+void qla24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, atio7_entry_t *atio)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ switch (atio->entry_type) {
+ case ATIO_TYPE7:
+ {
+ struct scsi_qla_host *host = qla_tgt_find_host_by_d_id(vha, atio->fcp_hdr.d_id);
+ if (unlikely(NULL == host)) {
+ printk(KERN_ERR "qla_target(%d): Received ATIO_TYPE7 "
+ "with unknown d_id %x:%x:%x\n", vha->vp_idx,
+ atio->fcp_hdr.d_id[0], atio->fcp_hdr.d_id[1],
+ atio->fcp_hdr.d_id[2]);
+ break;
+ }
+ qla24xx_atio_pkt(host, atio);
+ break;
+ }
+
+ case IMMED_NOTIFY_TYPE:
+ {
+ struct scsi_qla_host *host = vha;
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ notify24xx_entry_t *entry = (notify24xx_entry_t *)atio;
+ if ((entry->vp_index != 0xFF) &&
+ (entry->nport_handle != 0xFFFF)) {
+ host = qla_tgt_find_host_by_vp_idx(vha,
+ entry->vp_index);
+ if (unlikely(!host)) {
+ printk(KERN_ERR "qla_target(%d): Received "
+ "ATIO (IMMED_NOTIFY_TYPE) "
+ "with unknown vp_index %d\n",
+ vha->vp_idx, entry->vp_index);
+ break;
+ }
+ }
+ }
+ qla24xx_atio_pkt(host, atio);
+ break;
+ }
+
+ default:
+ printk(KERN_ERR "qla_target(%d): Received unknown ATIO atio "
+ "type %x\n", vha->vp_idx, atio->entry_type);
+ break;
+ }
+
+ return;
+}
+
+void qla_tgt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ switch (pkt->entry_type) {
+ case CTIO_TYPE7:
+ {
+ ctio7_fw_entry_t *entry = (ctio7_fw_entry_t *)pkt;
+ struct scsi_qla_host *host = qla_tgt_find_host_by_vp_idx(vha,
+ entry->vp_index);
+ if (unlikely(!host)) {
+ printk(KERN_ERR "qla_target(%d): Response pkt (CTIO_TYPE7) "
+ "received, with unknown vp_index %d\n",
+ vha->vp_idx, entry->vp_index);
+ break;
+ }
+ qla_tgt_response_pkt(host, pkt);
+ break;
+ }
+
+ case IMMED_NOTIFY_TYPE:
+ {
+ struct scsi_qla_host *host = vha;
+ if (IS_FWI2_CAPABLE(ha)) {
+ notify24xx_entry_t *entry = (notify24xx_entry_t *)pkt;
+ host = qla_tgt_find_host_by_vp_idx(vha, entry->vp_index);
+ if (unlikely(!host)) {
+ printk(KERN_ERR "qla_target(%d): Response pkt "
+ "(IMMED_NOTIFY_TYPE) received, "
+ "with unknown vp_index %d\n",
+ vha->vp_idx, entry->vp_index);
+ break;
+ }
+ }
+ qla_tgt_response_pkt(host, pkt);
+ break;
+ }
+
+ case NOTIFY_ACK_TYPE:
+ {
+ struct scsi_qla_host *host = vha;
+ if (IS_FWI2_CAPABLE(ha)) {
+ nack24xx_entry_t *entry = (nack24xx_entry_t *)pkt;
+ if (0xFF != entry->vp_index) {
+ host = qla_tgt_find_host_by_vp_idx(vha,
+ entry->vp_index);
+ if (unlikely(!host)) {
+ printk(KERN_ERR "qla_target(%d): Response "
+ "pkt (NOTIFY_ACK_TYPE) "
+ "received, with unknown "
+ "vp_index %d\n", vha->vp_idx,
+ entry->vp_index);
+ break;
+ }
+ }
+ }
+ qla_tgt_response_pkt(host, pkt);
+ break;
+ }
+
+ case ABTS_RECV_24XX:
+ {
+ abts24_recv_entry_t *entry = (abts24_recv_entry_t *)pkt;
+ struct scsi_qla_host *host = qla_tgt_find_host_by_vp_idx(vha,
+ entry->vp_index);
+ if (unlikely(!host)) {
+ printk(KERN_ERR "qla_target(%d): Response pkt "
+ "(ABTS_RECV_24XX) received, with unknown "
+ "vp_index %d\n", vha->vp_idx, entry->vp_index);
+ break;
+ }
+ qla_tgt_response_pkt(host, pkt);
+ break;
+ }
+
+ case ABTS_RESP_24XX:
+ {
+ abts24_resp_entry_t *entry = (abts24_resp_entry_t *)pkt;
+ struct scsi_qla_host *host = qla_tgt_find_host_by_vp_idx(vha,
+ entry->vp_index);
+ if (unlikely(!host)) {
+ printk(KERN_ERR "qla_target(%d): Response pkt "
+ "(ABTS_RECV_24XX) received, with unknown "
+ "vp_index %d\n", vha->vp_idx, entry->vp_index);
+ break;
+ }
+ qla_tgt_response_pkt(host, pkt);
+ break;
+ }
+
+ default:
+ qla_tgt_response_pkt(vha, pkt);
+ break;
+ }
+
+}
+
+
+/* ha->hardware_lock supposed to be held on entry */
+static void qla_tgt_free_session_done(struct qla_tgt_sess *sess)
+{
+ struct qla_tgt *tgt;
+ struct scsi_qla_host *vha = sess->vha;
+ struct qla_hw_data *ha = vha->hw;
+
+ tgt = sess->tgt;
+ /*
+ * Release the target session for FC Nexus from fabric module code.
+ */
+ if (sess->se_sess != NULL)
+ ha->qla2x_tmpl->free_session(sess);
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "Unregistration of"
+ " sess %p finished\n", sess));
+
+ kfree(sess);
+
+ if (!tgt)
+ return;
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "empty(sess_list) %d"
+ " sess_count %d\n", list_empty(&tgt->sess_list), tgt->sess_count));
+ /*
+ * We need to protect against race, when tgt is freed before or
+ * inside wake_up()
+ */
+ tgt->sess_count--;
+ if (tgt->sess_count == 0)
+ wake_up_all(&tgt->waitQ);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_unreg_sess(struct qla_tgt_sess *sess)
+{
+ int res = 1;
+
+ BUG_ON(sess == NULL);
+ BUG_ON(sess->sess_ref != 0);
+
+ list_del(&sess->sess_list_entry);
+
+ if (sess->deleted)
+ list_del(&sess->del_list_entry);
+
+ printk(KERN_INFO "qla_target(%d): %ssession for loop_id %d deleted\n",
+ sess->vha->vp_idx, sess->local ? "local " : "",
+ sess->loop_id);
+
+ qla_tgt_free_session_done(sess);
+
+ return res;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_sess *sess = NULL;
+ uint32_t unpacked_lun, lun = 0;
+ uint16_t loop_id;
+ int res = 0;
+ uint8_t s_id[3];
+
+ memset(&s_id, 0, 3);
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ notify24xx_entry_t *n = (notify24xx_entry_t *)iocb;
+ loop_id = le16_to_cpu(n->nport_handle);
+ s_id[0] = n->port_id[0];
+ s_id[1] = n->port_id[1];
+ s_id[2] = n->port_id[2];
+ } else
+ loop_id = GET_TARGET_ID(ha, (notify_entry_t *)iocb);
+
+ if (loop_id == 0xFFFF) {
+#warning FIXME: Re-enable Global event handling..
+#if 0
+ /* Global event */
+ printk("Processing qla_tgt_reset with loop_id=0xffff global event............\n");
+ atomic_inc(&ha->qla_tgt->tgt_global_resets_count);
+ qla_tgt_clear_tgt_db(ha->qla_tgt, 1);
+ if (!list_empty(&ha->qla_tgt->sess_list)) {
+ sess = list_entry(ha->qla_tgt->sess_list.next,
+ typeof(*sess), sess_list_entry);
+ switch (mcmd) {
+ case QLA_TGT_NEXUS_LOSS_SESS:
+ mcmd = QLA_TGT_NEXUS_LOSS;
+ break;
+ case QLA_TGT_ABORT_ALL_SESS:
+ mcmd = QLA_TGT_ABORT_ALL;
+ break;
+ case QLA_TGT_NEXUS_LOSS:
+ case QLA_TGT_ABORT_ALL:
+ break;
+ default:
+ printk(KERN_ERR "qla_target(%d): Not allowed "
+ "command %x in %s", vha->vp_idx,
+ mcmd, __func__);
+ sess = NULL;
+ break;
+ }
+ } else
+ sess = NULL;
+#endif
+ } else {
+ sess = ha->qla2x_tmpl->find_sess_by_loop_id(vha, loop_id);
+ }
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "Using sess for qla_tgt_reset: %p\n", sess));
+ if (!sess) {
+ res = -ESRCH;
+ ha->qla_tgt->tm_to_unknown = 1;
+ return res;
+ }
+
+ printk(KERN_INFO "scsi(%ld): resetting (session %p from port "
+ "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x, "
+ "mcmd %x, loop_id %d)\n", vha->host_no, sess,
+ 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],
+ mcmd, loop_id);
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ atio7_entry_t *a = (atio7_entry_t *)iocb;
+ lun = a->fcp_cmnd.lun;
+ } else {
+ notify_entry_t *n = (notify_entry_t *)iocb;
+ lun = swab16(le16_to_cpu(n->lun));
+ }
+ unpacked_lun = qla_tgt_unpack_lun((unsigned char *)&lun);
+
+ return qla_tgt_issue_task_mgmt(sess, unpacked_lun, mcmd,
+ iocb, Q24_MGMT_SEND_NACK);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static void qla_tgt_schedule_sess_for_deletion(struct qla_tgt_sess *sess)
+{
+ struct qla_tgt *tgt = sess->tgt;
+ uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
+ bool schedule;
+
+ if (sess->deleted)
+ return;
+ /*
+ * If the list is empty, then, most likely, the work isn't
+ * scheduled.
+ */
+ schedule = list_empty(&tgt->del_sess_list);
+
+ DEBUG21(qla_printk(KERN_INFO, sess->vha->hw, "Scheduling sess %p for"
+ " deletion (schedule %d)", sess, schedule));
+ list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
+ sess->deleted = 1;
+ sess->expires = jiffies + dev_loss_tmo * HZ;
+
+ printk(KERN_INFO "qla_target(%d): session for port %02x:%02x:%02x:"
+ "%02x:%02x:%02x:%02x:%02x (loop ID %d) scheduled for "
+ "deletion in %d secs\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);
+
+ if (schedule)
+ schedule_delayed_work(&tgt->sess_del_work,
+ jiffies - sess->expires);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static void qla_tgt_clear_tgt_db(struct qla_tgt *tgt, bool local_only)
+{
+ struct qla_tgt_sess *sess, *sess_tmp;
+
+ list_for_each_entry_safe(sess, sess_tmp, &tgt->sess_list,
+ sess_list_entry) {
+ if (local_only) {
+ if (!sess->local)
+ continue;
+ qla_tgt_schedule_sess_for_deletion(sess);
+ } else
+ qla_tgt_sess_put(sess);
+ }
+
+ /* 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, GID_LIST_SIZE,
+ &gid_list_dma, GFP_KERNEL);
+ if (!gid_list) {
+ printk(KERN_ERR "qla_target(%d): DMA Alloc failed of %zd\n",
+ vha->vp_idx, GID_LIST_SIZE);
+ return -ENOMEM;
+ }
+
+ /* Get list of logged in devices */
+ rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
+ if (rc != QLA_SUCCESS) {
+ printk(KERN_ERR "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, GID_LIST_SIZE, gid_list, gid_list_dma);
+
+ return res;
+}
+
+static bool qla_tgt_check_fcport_exist(struct scsi_qla_host *vha, struct qla_tgt_sess *sess)
+{
+ struct qla_hw_data *ha = vha->hw;
+ 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;
+
+retry:
+ global_resets = atomic_read(&ha->qla_tgt->tgt_global_resets_count);
+
+ rc = qla2x00_get_node_name_list(vha, &pmap, &pmap_len);
+ if (rc != QLA_SUCCESS) {
+ res = false;
+ goto out;
+ }
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ struct qla_port24_data *pmap24 = pmap;
+
+ entries = pmap_len/sizeof(*pmap24);
+
+ for (i = 0; i < entries; ++i) {
+ if ((sess->port_name[0] == pmap24[i].port_name[0]) &&
+ (sess->port_name[1] == pmap24[i].port_name[1]) &&
+ (sess->port_name[2] == pmap24[i].port_name[2]) &&
+ (sess->port_name[3] == pmap24[i].port_name[3]) &&
+ (sess->port_name[4] == pmap24[i].port_name[4]) &&
+ (sess->port_name[5] == pmap24[i].port_name[5]) &&
+ (sess->port_name[6] == pmap24[i].port_name[6]) &&
+ (sess->port_name[7] == pmap24[i].port_name[7])) {
+ loop_id = le16_to_cpu(pmap24[i].loop_id);
+ found = true;
+ break;
+ }
+ }
+ } else {
+ struct qla_port23_data *pmap2x = pmap;
+
+ entries = pmap_len/sizeof(*pmap2x);
+
+ for (i = 0; i < entries; ++i) {
+ if ((sess->port_name[0] == pmap2x[i].port_name[0]) &&
+ (sess->port_name[1] == pmap2x[i].port_name[1]) &&
+ (sess->port_name[2] == pmap2x[i].port_name[2]) &&
+ (sess->port_name[3] == pmap2x[i].port_name[3]) &&
+ (sess->port_name[4] == pmap2x[i].port_name[4]) &&
+ (sess->port_name[5] == pmap2x[i].port_name[5]) &&
+ (sess->port_name[6] == pmap2x[i].port_name[6]) &&
+ (sess->port_name[7] == pmap2x[i].port_name[7])) {
+ loop_id = le16_to_cpu(pmap2x[i].loop_id);
+ found = true;
+ break;
+ }
+ }
+ }
+
+ kfree(pmap);
+
+ if (!found) {
+ res = false;
+ goto out;
+ }
+
+ printk(KERN_INFO "qla_tgt_check_fcport_exist(): loop_id %d", loop_id);
+
+ fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
+ if (fcport == NULL) {
+ printk(KERN_ERR "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) {
+ printk(KERN_ERR "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->qla_tgt->tgt_global_resets_count)) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): global reset"
+ " during session discovery (counter was %d, new %d),"
+ " retrying", vha->vp_idx, global_resets,
+ atomic_read(&ha->qla_tgt->tgt_global_resets_count)));
+ goto retry;
+ }
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "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));
+
+ sess->s_id = fcport->d_id;
+ sess->loop_id = fcport->loop_id;
+ sess->conf_compl_supported = fcport->conf_compl_supported;
+
+ res = true;
+
+out_free_fcport:
+ kfree(fcport);
+
+out:
+ return res;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static void qla_tgt_undelete_sess(struct qla_tgt_sess *sess)
+{
+ BUG_ON(!sess->deleted);
+
+ list_del(&sess->del_list_entry);
+ sess->deleted = 0;
+}
+
+static void qla_tgt_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;
+
+ qla_tgt_undelete_sess(sess);
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ cancel = qla_tgt_check_fcport_exist(vha, sess);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ if (cancel) {
+ if (sess->deleted) {
+ /*
+ * sess was again deleted while we were
+ * discovering it
+ */
+ continue;
+ }
+
+ printk(KERN_INFO "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 {
+ DEBUG22(qla_printk(KERN_INFO, ha, "Timeout: sess %p"
+ " about to be deleted\n", sess));
+ qla_tgt_sess_put(sess);
+ }
+ } 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 *qla_tgt_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 */
+#if 0
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) {
+ if ((sess->port_name[0] == fcport->port_name[0]) &&
+ (sess->port_name[1] == fcport->port_name[1]) &&
+ (sess->port_name[2] == fcport->port_name[2]) &&
+ (sess->port_name[3] == fcport->port_name[3]) &&
+ (sess->port_name[4] == fcport->port_name[4]) &&
+ (sess->port_name[5] == fcport->port_name[5]) &&
+ (sess->port_name[6] == fcport->port_name[6]) &&
+ (sess->port_name[7] == fcport->port_name[7])) {
+ DEBUG22(qla_printk(KERN_INFO, "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)
+ qla_tgt_undelete_sess(sess);
+
+ qla_tgt_sess_get(sess);
+ sess->s_id = fcport->d_id;
+ sess->loop_id = fcport->loop_id;
+ sess->conf_compl_supported = fcport->conf_compl_supported;
+ if (sess->local && !local)
+ sess->local = 0;
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ goto out;
+ }
+ }
+ spin_unlock_irq_restore(&ha->hardware_lock, flags);
+#endif
+ /* We are under tgt_mutex, so a new sess can't be added behind us */
+
+ sess = kzalloc(sizeof(*sess), GFP_KERNEL);
+ if (!sess) {
+ printk(KERN_ERR "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->sess_ref = 2; /* plus 1 extra ref, see above */
+ sess->tgt = ha->qla_tgt;
+ sess->vha = vha;
+
+ sess->s_id = fcport->d_id;
+ sess->loop_id = fcport->loop_id;
+ sess->local = local;
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "Adding sess %p to tgt %p via"
+ " ->check_initiator_node_acl()\n", sess, ha->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->qla2x_tmpl->check_initiator_node_acl(vha, &fcport->port_name[0],
+ sess, &be_sid[0], fcport->loop_id) < 0) {
+ kfree(sess);
+ return NULL;
+ }
+
+ sess->conf_compl_supported = fcport->conf_compl_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->qla_tgt->sess_list);
+ ha->qla_tgt->sess_count++;
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ printk(KERN_INFO "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 qla_tgt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+ struct qla_tgt_sess *sess;
+ unsigned long flags;
+ unsigned char s_id[3];
+
+ if (!vha->hw->qla2x_tmpl)
+ 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 = qla_tgt_find_sess_by_port_name(tgt, fcport->port_name);
+ if (!sess) {
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ memset(&s_id, 0, 3);
+ s_id[0] = fcport->d_id.b.domain;
+ s_id[1] = fcport->d_id.b.area;
+ s_id[2] = fcport->d_id.b.al_pa;
+
+ mutex_lock(&ha->tgt_mutex);
+ sess = qla_tgt_create_sess(vha, fcport, false);
+ mutex_unlock(&ha->tgt_mutex);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (sess != NULL)
+ qla_tgt_sess_put(sess); /* put the extra creation ref */
+ } else {
+ if (sess->deleted) {
+ qla_tgt_undelete_sess(sess);
+
+ printk(KERN_INFO "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);
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "Reappeared sess %p\n", sess));
+ }
+ sess->s_id = fcport->d_id;
+ sess->loop_id = fcport->loop_id;
+ sess->conf_compl_supported = fcport->conf_compl_supported;
+ }
+
+ if (sess && sess->local) {
+ printk(KERN_INFO "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);
+}
+
+void qla_tgt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+ struct qla_tgt_sess *sess;
+ unsigned long flags;
+
+ if (!vha->hw->qla2x_tmpl)
+ 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 = qla_tgt_find_sess_by_port_name(tgt, fcport->port_name);
+ if (!sess) {
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return;
+ }
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_tgt_fc_port_deleted %p", sess));
+
+ sess->local = 1;
+ qla_tgt_schedule_sess_for_deletion(sess);
+ 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);
+ DEBUG21(qla_printk(KERN_INFO, ha, "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 qla_tgt_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) {
+ printk(KERN_ERR "Already in tgt->tgt_stop or tgt_stopped state\n");
+ dump_stack();
+ return;
+ }
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "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_mutex);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ tgt->tgt_stop = 1;
+ qla_tgt_clear_tgt_db(tgt, false);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ mutex_unlock(&ha->tgt_mutex);
+
+ cancel_delayed_work_sync(&tgt->sess_del_work);
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "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);
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "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->host_shutting_down && qla_tgt_mode_enabled(vha))
+ qla_tgt_disable_vha(vha);
+
+ /* Wait for sessions to clear out (just in case) */
+ wait_event(tgt->waitQ, test_tgt_sess_count(tgt));
+}
+EXPORT_SYMBOL(qla_tgt_stop_phase1);
+
+/* Called by tcm_qla2xxx configfs code */
+void qla_tgt_stop_phase2(struct qla_tgt *tgt)
+{
+ struct qla_hw_data *ha = tgt->ha;
+ unsigned long flags;
+
+ if (tgt->tgt_stopped) {
+ printk(KERN_ERR "Already in tgt->tgt_stopped state\n");
+ dump_stack();
+ return;
+ }
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "Waiting for %d IRQ commands to"
+ " complete (tgt %p)", tgt->irq_cmd_count, tgt));
+
+ mutex_lock(&ha->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_mutex);
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "Stop of tgt %p finished", tgt));
+}
+EXPORT_SYMBOL(qla_tgt_stop_phase2);
+
+/* Called from qla_tgt_remove_target() -> qla2x00_remove_one() */
+void qla_tgt_release(struct qla_tgt *tgt)
+{
+ struct qla_hw_data *ha = tgt->ha;
+
+ if ((ha->qla_tgt != NULL) && !tgt->tgt_stopped)
+ qla_tgt_stop_phase2(tgt);
+
+ ha->qla_tgt = NULL;
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "Release of tgt %p finished\n", tgt));
+
+ kfree(tgt);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_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 ) {
+ printk(KERN_ERR "qla_target(%d): Unable to create session "
+ "work, command will be refused", 0);
+ return -ENOMEM;
+ }
+
+ DEBUG22(qla_printk(KERN_INFO, tgt->vha->hw, "Scheduling work (type %d, prm %p)"
+ " to find session for param %p (size %d, tgt %p)\n", type, prm, param,
+ param_size, tgt));
+
+ BUG_ON(param_size > (sizeof(*prm) -
+ offsetof(struct qla_tgt_sess_work_param, cmd)));
+
+ prm->type = type;
+ memcpy(&prm->cmd, param, param_size);
+
+ spin_lock_irqsave(&tgt->sess_work_lock, flags);
+ if (!tgt->sess_works_pending)
+ tgt->tm_to_unknown = 0;
+ list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list);
+ tgt->sess_works_pending = 1;
+ 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 qla_tgt_modify_command_count(struct scsi_qla_host *vha, int cmd_count,
+ int imm_count)
+{
+ struct qla_hw_data *ha = vha->hw;
+ modify_lun_entry_t *pkt;
+
+ printk(KERN_INFO "Sending MODIFY_LUN (ha=%p, cmd=%d, imm=%d)\n",
+ ha, cmd_count, imm_count);
+
+ /* Sending marker isn't necessary, since we called from ISR */
+
+ pkt = (modify_lun_entry_t *)qla2x00_req_pkt(vha);
+ if (!pkt) {
+ printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", vha->vp_idx, __func__);
+ return;
+ }
+
+ ha->qla_tgt->modify_lun_expected++;
+
+ pkt->entry_type = MODIFY_LUN_TYPE;
+ pkt->entry_count = 1;
+ if (cmd_count < 0) {
+ pkt->operators = MODIFY_LUN_CMD_SUB; /* Subtract from command count */
+ pkt->command_count = -cmd_count;
+ } else if (cmd_count > 0) {
+ pkt->operators = MODIFY_LUN_CMD_ADD; /* Add to command count */
+ pkt->command_count = cmd_count;
+ }
+
+ if (imm_count < 0) {
+ pkt->operators |= MODIFY_LUN_IMM_SUB;
+ pkt->immed_notify_count = -imm_count;
+ } else if (imm_count > 0) {
+ pkt->operators |= MODIFY_LUN_IMM_ADD;
+ pkt->immed_notify_count = imm_count;
+ }
+
+ pkt->timeout = 0; /* Use default */
+
+ qla2x00_isp_cmd(vha, vha->req);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla2xxx_send_notify_ack(struct scsi_qla_host *vha, notify_entry_t *iocb,
+ 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;
+ nack_entry_t *ntfy;
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "Sending NOTIFY_ACK (ha=%p)\n", ha));
+
+ /* Send marker if required */
+ if (qla_tgt_issue_marker(vha, 1) != QLA_SUCCESS)
+ return;
+
+ ntfy = (nack_entry_t *)qla2x00_req_pkt(vha);
+ if (!ntfy) {
+ printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", vha->vp_idx, __func__);
+ return;
+ }
+
+ if (ha->qla_tgt != NULL)
+ ha->qla_tgt->notify_ack_expected++;
+
+ ntfy->entry_type = NOTIFY_ACK_TYPE;
+ ntfy->entry_count = 1;
+ SET_TARGET_ID(ha, ntfy->target, GET_TARGET_ID(ha, iocb));
+ ntfy->status = iocb->status;
+ ntfy->task_flags = iocb->task_flags;
+ ntfy->seq_id = iocb->seq_id;
+ /* Do not increment here, the chip isn't decrementing */
+ /* ntfy->flags = __constant_cpu_to_le16(NOTIFY_ACK_RES_COUNT); */
+ ntfy->flags |= cpu_to_le16(add_flags);
+ ntfy->srr_rx_id = iocb->srr_rx_id;
+ ntfy->srr_rel_offs = iocb->srr_rel_offs;
+ ntfy->srr_ui = iocb->srr_ui;
+ ntfy->srr_flags = cpu_to_le16(srr_flags);
+ ntfy->srr_reject_code = cpu_to_le16(srr_reject_code);
+ ntfy->srr_reject_code_expl = srr_explan;
+ ntfy->ox_id = iocb->ox_id;
+
+ if (resp_code_valid) {
+ ntfy->resp_code = cpu_to_le16(resp_code);
+ ntfy->flags |= __constant_cpu_to_le16(
+ NOTIFY_ACK_TM_RESP_CODE_VALID);
+ }
+
+ DEBUG23(qla_printk(KERN_INFO, ha, "qla_target(%d): Sending Notify Ack"
+ " Seq %#x -> I %#x St %#x RC %#x\n", vha->vp_idx,
+ le16_to_cpu(iocb->seq_id), GET_TARGET_ID(ha, iocb),
+ le16_to_cpu(iocb->status), le16_to_cpu(ntfy->resp_code)));
+
+ qla2x00_isp_cmd(vha, vha->req);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla24xx_send_abts_resp(struct scsi_qla_host *vha,
+ const abts24_recv_entry_t *abts, uint32_t status, bool ids_reversed)
+{
+ struct qla_hw_data *ha = vha->hw;
+ abts24_resp_entry_t *resp;
+ uint32_t f_ctl;
+ uint8_t *p;
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "Sending task mgmt ABTS response"
+ " (ha=%p, atio=%p, status=%x\n", ha, abts, status));
+
+ /* Send marker if required */
+ if (qla_tgt_issue_marker(vha, 1) != QLA_SUCCESS)
+ return;
+
+ resp = (abts24_resp_entry_t *)qla2x00_req_pkt(vha);
+ if (!resp) {
+ printk(KERN_ERR "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->qla_tgt->abts_resp_expected++;
+
+ qla2x00_isp_cmd(vha, vha->req);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla24xx_retry_term_exchange(struct scsi_qla_host *vha,
+ abts24_resp_fw_entry_t *entry)
+{
+ ctio7_status1_entry_t *ctio;
+
+ DEBUG21(qla_printk(KERN_INFO, vha->hw, "Sending retry TERM EXCH CTIO7"
+ " (ha=%p)\n", vha->hw));
+ /* Send marker if required */
+ if (qla_tgt_issue_marker(vha, 1) != QLA_SUCCESS)
+ return;
+
+ ctio = (ctio7_status1_entry_t *)qla2x00_req_pkt(vha);
+ if (ctio == NULL) {
+ printk(KERN_ERR "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->common.entry_type = CTIO_TYPE7;
+ ctio->common.entry_count = 1;
+ ctio->common.nport_handle = entry->nport_handle;
+ ctio->common.handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+ ctio->common.timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio->common.vp_index = vha->vp_idx;
+ ctio->common.initiator_id[0] = entry->fcp_hdr_le.d_id[0];
+ ctio->common.initiator_id[1] = entry->fcp_hdr_le.d_id[1];
+ ctio->common.initiator_id[2] = entry->fcp_hdr_le.d_id[2];
+ ctio->common.exchange_addr = entry->exchange_addr_to_abort;
+ ctio->flags = __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
+ ctio->ox_id = entry->fcp_hdr_le.ox_id;
+
+ qla2x00_isp_cmd(vha, vha->req);
+
+ qla24xx_send_abts_resp(vha, (abts24_recv_entry_t *)entry,
+ FCP_TMF_CMPL, true);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int __qla24xx_handle_abts(struct scsi_qla_host *vha, abts24_recv_entry_t *abts,
+ struct qla_tgt_sess *sess)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_mgmt_cmd *mcmd;
+ int rc;
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "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) {
+ printk(KERN_ERR "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->qla2x_tmpl->handle_tmr(mcmd, 0, ABORT_TASK);
+ if (rc != 0) {
+ printk(KERN_ERR "qla_target(%d): qla2x_tmpl->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 qla24xx_handle_abts(struct scsi_qla_host *vha, abts24_recv_entry_t *abts)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_sess *sess;
+ uint32_t tag = abts->exchange_addr_to_abort, s_id;
+ int rc;
+
+ if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
+ printk(KERN_ERR "qla_target(%d): ABTS: Abort Sequence not "
+ "supported\n", vha->vp_idx);
+ qla24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+ return;
+ }
+
+ if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): ABTS: Unknown Exchange "
+ "Address received\n", vha->vp_idx));
+ qla24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+ return;
+ }
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "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)));
+
+ memset(&s_id, 0, 3);
+ s_id = (abts->fcp_hdr_le.s_id[0] << 16) | (abts->fcp_hdr_le.s_id[1] << 8) |
+ abts->fcp_hdr_le.s_id[2];
+
+ sess = ha->qla2x_tmpl->find_sess_by_s_id(vha, (unsigned char *)&s_id);
+ if (!sess) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): task abort for"
+ " non-existant session\n", vha->vp_idx));
+ rc = qla_tgt_sched_sess_work(ha->qla_tgt, QLA_TGT_SESS_WORK_ABORT,
+ abts, sizeof(*abts));
+ if (rc != 0) {
+ ha->qla_tgt->tm_to_unknown = 1;
+ qla24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+ }
+ return;
+ }
+
+ rc = __qla24xx_handle_abts(vha, abts, sess);
+ if (rc != 0) {
+ printk(KERN_ERR "qla_target(%d): __qla24xx_handle_abts() failed: %d\n",
+ vha->vp_idx, rc);
+ qla24xx_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 qla24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
+ struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
+{
+ const atio7_entry_t *atio = &mcmd->orig_iocb.atio7;
+ ctio7_status1_entry_t *ctio;
+
+ DEBUG21(qla_printk(KERN_INFO, ha->hw, "Sending task mgmt CTIO7 (ha=%p,"
+ " atio=%p, resp_code=%x\n", ha, atio, resp_code));
+
+ /* Send marker if required */
+ if (qla_tgt_issue_marker(ha, 1) != QLA_SUCCESS)
+ return;
+
+ ctio = (ctio7_status1_entry_t *)qla2x00_req_pkt(ha);
+ if (ctio == NULL) {
+ printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", ha->vp_idx, __func__);
+ return;
+ }
+
+ ctio->common.entry_type = CTIO_TYPE7;
+ ctio->common.entry_count = 1;
+ ctio->common.handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+ ctio->common.nport_handle = mcmd->sess->loop_id;
+ ctio->common.timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio->common.vp_index = ha->vp_idx;
+ ctio->common.initiator_id[0] = atio->fcp_hdr.s_id[2];
+ ctio->common.initiator_id[1] = atio->fcp_hdr.s_id[1];
+ ctio->common.initiator_id[2] = atio->fcp_hdr.s_id[0];
+ ctio->common.exchange_addr = atio->exchange_addr;
+ ctio->flags = (atio->attr << 9) | __constant_cpu_to_le16(
+ CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
+ ctio->ox_id = swab16(atio->fcp_hdr.ox_id);
+ ctio->scsi_status = __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
+ ctio->response_len = __constant_cpu_to_le16(8);
+ ((uint32_t *)ctio->sense_data)[0] = cpu_to_be32(resp_code);
+
+ qla2x00_isp_cmd(ha, ha->req);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla24xx_send_notify_ack(struct scsi_qla_host *vha,
+ notify24xx_entry_t *iocb, uint16_t srr_flags,
+ uint8_t srr_reject_code, uint8_t srr_explan)
+{
+ struct qla_hw_data *ha = vha->hw;
+ nack24xx_entry_t *nack;
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "Sending NOTIFY_ACK24 (ha=%p)\n", ha));
+
+ /* Send marker if required */
+ if (qla_tgt_issue_marker(vha, 1) != QLA_SUCCESS)
+ return;
+
+ if (ha->qla_tgt != NULL)
+ ha->qla_tgt->notify_ack_expected++;
+
+ nack = (nack24xx_entry_t *)qla2x00_req_pkt(vha);
+ if (!nack) {
+ printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", vha->vp_idx, __func__);
+ return;
+ }
+
+ nack->entry_type = NOTIFY_ACK_TYPE;
+ nack->entry_count = 1;
+ nack->nport_handle = iocb->nport_handle;
+ if (le16_to_cpu(iocb->status) == IMM_NTFY_ELS) {
+ nack->flags = iocb->flags &
+ __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
+ }
+ nack->srr_rx_id = iocb->srr_rx_id;
+ nack->status = iocb->status;
+ nack->status_subcode = iocb->status_subcode;
+ nack->exchange_address = iocb->exchange_address;
+ nack->srr_rel_offs = iocb->srr_rel_offs;
+ nack->srr_ui = iocb->srr_ui;
+ nack->srr_flags = cpu_to_le16(srr_flags);
+ nack->srr_reject_code = srr_reject_code;
+ nack->srr_reject_code_expl = srr_explan;
+ nack->ox_id = iocb->ox_id;
+ nack->vp_index = iocb->vp_index;
+
+ DEBUG23(qla_printk(KERN_INFO, ha, "qla_target(%d): Sending 24xx Notify Ack %d\n",
+ vha->vp_idx, nack->status));
+
+ qla2x00_isp_cmd(vha, vha->req);
+}
+
+void qla_tgt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
+{
+ mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+}
+EXPORT_SYMBOL(qla_tgt_free_mcmd);
+
+/* callback from target fabric module code */
+void qla_tgt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd)
+{
+ struct scsi_qla_host *vha;
+ struct qla_hw_data *ha;
+ unsigned long flags;
+
+ DEBUG22(qla_printk(KERN_INFO, mcmd->sess->vha->hw, "TM response mcmd"
+ " (%p) status %#x state %#x", mcmd, mcmd->se_tmr_req->response,
+ mcmd->flags));
+
+ vha = mcmd->sess->vha;
+ ha = vha->hw;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (IS_FWI2_CAPABLE(ha)) {
+ if (mcmd->flags == Q24_MGMT_SEND_NACK) {
+ qla24xx_send_notify_ack(vha,
+ &mcmd->orig_iocb.notify_entry24, 0, 0, 0);
+ } else {
+ if (mcmd->se_tmr_req->function == ABORT_TASK)
+ qla24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
+ mcmd->fc_tm_rsp, false);
+ else
+ qla24xx_send_task_mgmt_ctio(vha, mcmd, mcmd->fc_tm_rsp);
+ }
+ } else {
+ qla2xxx_send_notify_ack(vha, &mcmd->orig_iocb.notify_entry, 0,
+ mcmd->fc_tm_rsp, 1, 0, 0, 0);
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+EXPORT_SYMBOL(qla_tgt_xmit_tm_rsp);
+
+/* No locks */
+static int qla_tgt_pci_map_calc_cnt(struct qla_tgt_prm *prm)
+{
+ BUG_ON(prm->cmd->sg_cnt == 0);
+
+ prm->sg = (struct scatterlist *)prm->cmd->sg;
+ prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, prm->cmd->sg,
+ prm->cmd->sg_cnt, prm->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 += (uint16_t)(prm->seg_cnt -
+ prm->tgt->datasegs_per_cmd) /
+ prm->tgt->datasegs_per_cont;
+ if (((uint16_t)(prm->seg_cnt - prm->tgt->datasegs_per_cmd)) %
+ prm->tgt->datasegs_per_cont)
+ prm->req_cnt++;
+ }
+
+ DEBUG21(qla_printk(KERN_INFO, prm->cmd->vha->hw, "seg_cnt=%d, req_cnt=%d\n",
+ prm->seg_cnt, prm->req_cnt));
+ return 0;
+
+out_err:
+ printk(KERN_ERR "qla_target(%d): PCI mapping failed: sg_cnt=%d",
+ 0, prm->cmd->sg_cnt);
+ return -1;
+}
+
+static inline void qla_tgt_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 qla_tgt_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)) {
+ if (IS_FWI2_CAPABLE(ha))
+ cnt = (uint16_t)RD_REG_DWORD(
+ &reg->isp24.req_q_out);
+ else
+ cnt = qla2x00_debounce_register(
+ ISP_REQ_Q_OUT(ha, &reg->isp));
+ DEBUG21(qla_printk(KERN_INFO, ha, "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))) {
+ printk(KERN_INFO "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 -ENOMEM;
+ }
+ vha->req->cnt -= req_cnt;
+
+ return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static inline void *qla_tgt_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 qla_tgt_make_handle(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ uint32_t h;
+
+ h = ha->current_handle;
+ /* always increment cmd handle */
+ do {
+ ++h;
+ if (h > MAX_OUTSTANDING_COMMANDS)
+ h = 1; /* 0 is QLA_TGT_NULL_HANDLE */
+ if (h == ha->current_handle) {
+ printk(KERN_INFO "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->cmds[h-1] != NULL));
+
+ if (h != QLA_TGT_NULL_HANDLE)
+ ha->current_handle = h;
+
+ return h;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static void qla2xxx_build_ctio_pkt(struct qla_tgt_prm *prm, struct scsi_qla_host *vha)
+{
+ uint32_t h;
+ ctio_entry_t *pkt;
+ struct qla_hw_data *ha = vha->hw;
+
+ pkt = (ctio_entry_t *)vha->req->ring_ptr;
+ prm->pkt = pkt;
+ memset(pkt, 0, sizeof(*pkt));
+
+ if (prm->tgt->tgt_enable_64bit_addr)
+ pkt->common.entry_type = CTIO_A64_TYPE;
+ else
+ pkt->common.entry_type = CONTINUE_TGT_IO_TYPE;
+
+ pkt->common.entry_count = (uint8_t)prm->req_cnt;
+
+ h = qla_tgt_make_handle(vha);
+ if (h != QLA_TGT_NULL_HANDLE)
+ ha->cmds[h-1] = prm->cmd;
+
+ pkt->common.handle = h | CTIO_COMPLETION_HANDLE_MARK;
+ pkt->common.timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+
+ /* Set initiator ID */
+ h = GET_TARGET_ID(ha, &prm->cmd->atio.atio2x);
+ SET_TARGET_ID(ha, pkt->common.target, h);
+
+ pkt->common.rx_id = prm->cmd->atio.atio2x.rx_id;
+ pkt->common.relative_offset = cpu_to_le32(prm->cmd->offset);
+
+ DEBUG23(qla_printk(KERN_INFO, ha, "qla_target(%d): handle(se_cmd) -> %08x, "
+ "timeout %d L %#x -> I %#x E %#x\n", vha->vp_idx,
+ pkt->common.handle, QLA_TGT_TIMEOUT,
+ le16_to_cpu(prm->cmd->atio.atio2x.lun),
+ GET_TARGET_ID(ha, &pkt->common), pkt->common.rx_id));
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla24xx_build_ctio_pkt(struct qla_tgt_prm *prm, struct scsi_qla_host *vha)
+{
+ uint32_t h;
+ ctio7_status0_entry_t *pkt;
+ struct qla_hw_data *ha = vha->hw;
+ atio7_entry_t *atio = &prm->cmd->atio.atio7;
+
+ pkt = (ctio7_status0_entry_t *)vha->req->ring_ptr;
+ prm->pkt = pkt;
+ memset(pkt, 0, sizeof(*pkt));
+
+ pkt->common.entry_type = CTIO_TYPE7;
+ pkt->common.entry_count = (uint8_t)prm->req_cnt;
+ pkt->common.vp_index = vha->vp_idx;
+
+ h = qla_tgt_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.
+ */
+ dump_stack();
+ return -ENOMEM;
+ } else
+ ha->cmds[h-1] = prm->cmd;
+
+ pkt->common.handle = h | CTIO_COMPLETION_HANDLE_MARK;
+ pkt->common.nport_handle = prm->cmd->loop_id;
+ pkt->common.timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+ pkt->common.initiator_id[0] = atio->fcp_hdr.s_id[2];
+ pkt->common.initiator_id[1] = atio->fcp_hdr.s_id[1];
+ pkt->common.initiator_id[2] = atio->fcp_hdr.s_id[0];
+ pkt->common.exchange_addr = atio->exchange_addr;
+ pkt->flags |= (atio->attr << 9);
+ pkt->ox_id = swab16(atio->fcp_hdr.ox_id);
+ pkt->relative_offset = cpu_to_le32(prm->cmd->offset);
+
+ DEBUG23(qla_printk(KERN_INFO, ha, "qla_target(%d): handle(cmd) -> %08x, "
+ "timeout %d, ox_id %#x\n", vha->vp_idx, pkt->common.handle,
+ QLA_TGT_TIMEOUT, le16_to_cpu(pkt->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 qla_tgt_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 *)qla_tgt_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));
+
+ DEBUG24(qla_printk(KERN_INFO, vha->hw, "S/G Segment Cont. phys_addr=%llx:%llx, len=%d",
+ (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++;
+ }
+ }
+}
+
+/*
+ * 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 qla2xxx_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;
+ ctio_common_entry_t *pkt = (ctio_common_entry_t *)prm->pkt;
+
+ DEBUG23(qla_printk(KERN_INFO, vha->hw, "iocb->scsi_status=%x, iocb->flags=%x\n",
+ le16_to_cpu(pkt->scsi_status), le16_to_cpu(pkt->flags)));
+
+ pkt->transfer_length = cpu_to_le32(prm->cmd->bufflen);
+
+ /* Setup packet address segment pointer */
+ dword_ptr = pkt->dseg_0_address;
+
+ if (prm->seg_cnt == 0) {
+ /* No data transfer */
+ *dword_ptr++ = 0;
+ *dword_ptr = 0;
+ return;
+ }
+
+ /* Set total data segment count */
+ pkt->dseg_count = cpu_to_le16(prm->seg_cnt);
+
+ /* If scatter gather */
+ DEBUG24(qla_printk(KERN_INFO, vha->hw, "%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));
+
+ DEBUG24(qla_printk(KERN_INFO, vha->hw, "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++;
+ }
+
+ qla_tgt_load_cont_data_segments(prm, vha);
+}
+
+/*
+ * 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 qla24xx_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;
+ ctio7_status0_entry_t *pkt = (ctio7_status0_entry_t *)prm->pkt;
+
+ DEBUG21(qla_printk(KERN_INFO, vha->hw, "iocb->scsi_status=%x, iocb->flags=%x\n",
+ le16_to_cpu(pkt->scsi_status), le16_to_cpu(pkt->flags)));
+
+ pkt->transfer_length = cpu_to_le32(prm->cmd->bufflen);
+
+ /* Setup packet address segment pointer */
+ dword_ptr = pkt->dseg_0_address;
+
+ if (prm->seg_cnt == 0) {
+ /* No data transfer */
+ *dword_ptr++ = 0;
+ *dword_ptr = 0;
+ return;
+ }
+
+ /* Set total data segment count */
+ pkt->common.dseg_count = cpu_to_le16(prm->seg_cnt);
+
+ /* If scatter gather */
+ DEBUG24(qla_printk(KERN_INFO, vha->hw, "%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));
+
+ DEBUG24(qla_printk(KERN_INFO, vha->hw, "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++;
+ }
+
+ qla_tgt_load_cont_data_segments(prm, vha);
+}
+
+static inline int qla_tgt_has_data(struct qla_tgt_cmd *cmd)
+{
+ return cmd->bufflen > 0;
+}
+
+/*
+ * Called without ha->hardware_lock held
+ */
+static int qla_tgt_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)) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "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;
+
+ if (IS_FWI2_CAPABLE(ha))
+ qla24xx_send_term_exchange(vha, cmd, &cmd->atio.atio7, 0);
+ else
+ qla2xxx_send_term_exchange(vha, cmd, &cmd->atio.atio2x, 0);
+ /* !! At this point cmd could be already freed !! */
+ return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
+ }
+
+ DEBUG23(qla_printk(KERN_INFO, ha, "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;
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "rq_result=%x, xmit_type=%x\n",
+ prm->rq_result, xmit_type));
+
+ /* Send marker if required */
+ if (qla_tgt_issue_marker(vha, 0) != QLA_SUCCESS)
+ return -EFAULT;
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "CTIO start: vha(%d)\n", vha->vp_idx));
+
+ if ((xmit_type & QLA_TGT_XMIT_DATA) && qla_tgt_has_data(cmd)) {
+ if (qla_tgt_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;
+ DEBUG21(qla_printk(KERN_INFO, ha, "Residual underflow: %d (tag %d, "
+ "op %x, bufflen %d, rq_result %x)\n",
+ prm->residual, cmd->tag,
+ T_TASK(se_cmd)->t_task_cdb[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;
+ DEBUG21(qla_printk(KERN_INFO, ha, "Residual overflow: %d (tag %d, "
+ "op %x, bufflen %d, rq_result %x)\n",
+ prm->residual, cmd->tag,
+ T_TASK(se_cmd)->t_task_cdb[0], cmd->bufflen,
+ prm->rq_result));
+ prm->rq_result |= SS_RESIDUAL_OVER;
+ prm->residual = -prm->residual;
+ }
+
+ 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 (qla_tgt_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)++;
+ }
+ }
+ }
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "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 qla_tgt_need_explicit_conf(struct qla_hw_data *ha,
+ struct qla_tgt_cmd *cmd, int sending_sense)
+{
+ if (ha->enable_class_2)
+ return 0;
+
+ if (sending_sense)
+ return cmd->conf_compl_supported;
+ else
+ return ha->enable_explicit_conf && cmd->conf_compl_supported;
+}
+
+static void qla_tgt_init_ctio_ret_entry(ctio_ret_entry_t *ctio_m1,
+ struct qla_tgt_prm *prm, struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ prm->sense_buffer_len = min((uint32_t)prm->sense_buffer_len,
+ (uint32_t)sizeof(ctio_m1->sense_data));
+
+ ctio_m1->flags = __constant_cpu_to_le16(OF_SSTS | OF_FAST_POST |
+ OF_NO_DATA | OF_SS_MODE_1);
+ ctio_m1->flags |= __constant_cpu_to_le16(OF_INC_RC);
+ if (qla_tgt_need_explicit_conf(ha, prm->cmd, 0)) {
+ ctio_m1->flags |= __constant_cpu_to_le16(OF_EXPL_CONF |
+ OF_CONF_REQ);
+ }
+ ctio_m1->scsi_status = cpu_to_le16(prm->rq_result);
+ ctio_m1->residual = cpu_to_le32(prm->residual);
+ if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
+ if (qla_tgt_need_explicit_conf(ha, prm->cmd, 1)) {
+ ctio_m1->flags |= __constant_cpu_to_le16(OF_EXPL_CONF |
+ OF_CONF_REQ);
+ }
+ ctio_m1->scsi_status |= __constant_cpu_to_le16(
+ SS_SENSE_LEN_VALID);
+ ctio_m1->sense_length = cpu_to_le16(prm->sense_buffer_len);
+ memcpy(ctio_m1->sense_data, prm->sense_buffer,
+ prm->sense_buffer_len);
+ } else {
+ memset(ctio_m1->sense_data, 0, sizeof(ctio_m1->sense_data));
+ ctio_m1->sense_length = 0;
+ }
+
+ /* Sense with len > 26, is it possible ??? */
+
+ return;
+}
+
+static int __qla2xxx_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 qla_tgt_prm prm;
+ ctio_common_entry_t *pkt;
+ unsigned long flags = 0;
+ uint32_t full_req_cnt = 0;
+ int res;
+
+ memset(&prm, 0, sizeof(prm));
+
+ res = qla_tgt_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;
+ }
+
+ if (cmd->locked_rsp)
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ /* Does F/W have an IOCBs for this request */
+ res = qla_tgt_check_reserve_free_req(vha, full_req_cnt);
+ if (unlikely(res != 0) && (xmit_type & QLA_TGT_XMIT_DATA))
+ goto out_unmap_unlock;
+
+ qla2xxx_build_ctio_pkt(&prm, cmd->vha);
+ pkt = (ctio_common_entry_t *)prm.pkt;
+
+ if (qla_tgt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
+ pkt->flags |= __constant_cpu_to_le16(OF_FAST_POST | OF_DATA_IN);
+ pkt->flags |= __constant_cpu_to_le16(OF_INC_RC);
+
+ qla2xxx_load_data_segments(&prm, vha);
+
+ if (prm.add_status_pkt == 0) {
+ if (xmit_type & QLA_TGT_XMIT_STATUS) {
+ pkt->scsi_status = cpu_to_le16(prm.rq_result);
+ pkt->residual = cpu_to_le32(prm.residual);
+ pkt->flags |= __constant_cpu_to_le16(OF_SSTS);
+ if (qla_tgt_need_explicit_conf(ha, cmd, 0)) {
+ pkt->flags |= __constant_cpu_to_le16(
+ OF_EXPL_CONF |
+ OF_CONF_REQ);
+ }
+ }
+ } else {
+ /*
+ * We have already made sure that there is sufficient
+ * amount of request entries to not drop HW lock in
+ * req_pkt().
+ */
+ ctio_ret_entry_t *ctio_m1 =
+ (ctio_ret_entry_t *)qla_tgt_get_req_pkt(vha);
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "%s", "Building"
+ " additional status packet"));
+
+ memcpy(ctio_m1, pkt, sizeof(*ctio_m1));
+ ctio_m1->entry_count = 1;
+ ctio_m1->dseg_count = 0;
+
+ /* Real finish is ctio_m1's finish */
+ pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
+ pkt->flags &= ~__constant_cpu_to_le16(OF_INC_RC);
+
+ qla_tgt_init_ctio_ret_entry(ctio_m1, &prm, cmd->vha);
+ }
+ } else
+ qla_tgt_init_ctio_ret_entry((ctio_ret_entry_t *)pkt,
+ &prm, cmd->vha);
+
+ cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "Xmitting CTIO7 response pkt for 2xxx:"
+ " %p scsi_status: 0x%02x\n", pkt, scsi_status));
+
+ qla2x00_isp_cmd(vha, vha->req);
+ if (cmd->locked_rsp)
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return 0;
+
+out_unmap_unlock:
+ if (cmd->sg_mapped)
+ qla_tgt_unmap_sg(vha, cmd);
+ if (cmd->locked_rsp)
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return res;
+}
+
+#ifdef CONFIG_QLA_TGT_DEBUG_SRR
+/*
+ * Original taken from the XFS code
+ */
+static unsigned long qla_tgt_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 qla_tgt_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) && (qla_tgt_srr_random() % 200) == 50) {
+ *xmit_type &= ~QLA_TGT_XMIT_STATUS;
+ DEBUG22(qla_printk(KERN_INFO, "Dropping cmd %p (tag %d) status", cmd,
+ cmd->tag));
+ }
+#endif
+
+ if (qla_tgt_has_data(cmd) && (cmd->sg_cnt > 1) &&
+ ((qla_tgt_srr_random() % 100) == 20)) {
+ int i, leave = 0;
+ unsigned int tot_len = 0;
+
+ while (leave == 0)
+ leave = qla_tgt_srr_random() % cmd->sg_cnt;
+
+ for (i = 0; i < leave; i++)
+ tot_len += cmd->sg[i].length;
+
+ DEBUG22(qla_printk(KERN_INFO, "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 (qla_tgt_has_data(cmd) && ((qla_tgt_srr_random() % 100) == 70)) {
+ unsigned int offset = qla_tgt_srr_random() % cmd->bufflen;
+
+ DEBUG22(qla_printk(KERN_INFO, "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 (qla_tgt_cut_cmd_data_head(cmd, offset)) {
+ DEBUG22(qla_printk(KERN_INFO, "qla_tgt_cut_cmd_data_head() failed (tag %d)",
+ cmd->tag));
+ }
+ }
+}
+#else
+static inline void qla_tgt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type) {}
+#endif
+
+int qla2xxx_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, uint8_t scsi_status)
+{
+#if 0
+ qla_tgt_check_srr_debug(cmd, &xmit_type);
+#endif
+
+ DEBUG21(qla_printk(KERN_INFO, cmd->vha->hw, "is_send_status=%d,"
+ " cmd->bufflen=%d, cmd->sg_cnt=%d, cmd->dma_data_direction=%d",
+ (xmit_type & QLA_TGT_XMIT_STATUS) ? 1 : 0, cmd->bufflen,
+ cmd->sg_cnt, cmd->dma_data_direction));
+
+ return (IS_FWI2_CAPABLE(cmd->tgt->ha)) ?
+ __qla24xx_xmit_response(cmd, xmit_type, scsi_status) :
+ __qla2xxx_xmit_response(cmd, xmit_type, scsi_status);
+}
+EXPORT_SYMBOL(qla2xxx_xmit_response);
+
+static void qla24xx_init_ctio_ret_entry(ctio7_status0_entry_t *ctio,
+ struct qla_tgt_prm *prm)
+{
+ ctio7_status1_entry_t *ctio1;
+
+ prm->sense_buffer_len = min((uint32_t)prm->sense_buffer_len,
+ (uint32_t)sizeof(ctio1->sense_data));
+ ctio->flags |= __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
+ if (qla_tgt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
+ ctio->flags |= __constant_cpu_to_le16(
+ CTIO7_FLAGS_EXPLICIT_CONFORM |
+ CTIO7_FLAGS_CONFORM_REQ);
+ }
+ ctio->residual = cpu_to_le32(prm->residual);
+ ctio->scsi_status = cpu_to_le16(prm->rq_result);
+ if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
+ int i;
+
+ ctio1 = (ctio7_status1_entry_t *)ctio;
+ if (qla_tgt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
+ ctio1->flags |= __constant_cpu_to_le16(
+ CTIO7_FLAGS_EXPLICIT_CONFORM |
+ CTIO7_FLAGS_CONFORM_REQ);
+ }
+ ctio1->flags &= ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
+ ctio1->flags |= __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
+ ctio1->scsi_status |= __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
+ ctio1->sense_length = cpu_to_le16(prm->sense_buffer_len);
+ for (i = 0; i < prm->sense_buffer_len/4; i++)
+ ((uint32_t *)ctio1->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) {
+ printk(KERN_INFO "qla_target(%d): %d bytes of sense "
+ "lost", prm->tgt->ha->vp_idx,
+ prm->sense_buffer_len % 4);
+ q++;
+ }
+ }
+#endif
+ } else {
+ ctio1 = (ctio7_status1_entry_t *)ctio;
+ ctio1->flags &= ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
+ ctio1->flags |= __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
+ ctio1->sense_length = 0;
+ memset(ctio1->sense_data, 0, sizeof(ctio1->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
+ */
+static int __qla24xx_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;
+ ctio7_status0_entry_t *pkt;
+ struct qla_tgt_prm prm;
+ uint32_t full_req_cnt = 0;
+ unsigned long flags = 0;
+ int res;
+
+ memset(&prm, 0, sizeof(prm));
+
+ res = qla_tgt_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;
+ }
+
+ if (cmd->locked_rsp)
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ /* Does F/W have an IOCBs for this request */
+ res = qla_tgt_check_reserve_free_req(vha, full_req_cnt);
+ if (unlikely(res != 0) && (xmit_type & QLA_TGT_XMIT_DATA))
+ goto out_unmap_unlock;
+
+ res = qla24xx_build_ctio_pkt(&prm, vha);
+ if (unlikely(res != 0))
+ goto out_unmap_unlock;
+
+
+ pkt = (ctio7_status0_entry_t *)prm.pkt;
+
+ if (qla_tgt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
+ pkt->flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
+ CTIO7_FLAGS_STATUS_MODE_0);
+
+ qla24xx_load_data_segments(&prm, vha);
+
+ if (prm.add_status_pkt == 0) {
+ if (xmit_type & QLA_TGT_XMIT_STATUS) {
+ pkt->scsi_status = cpu_to_le16(prm.rq_result);
+ pkt->residual = cpu_to_le32(prm.residual);
+ pkt->flags |= __constant_cpu_to_le16(
+ CTIO7_FLAGS_SEND_STATUS);
+ if (qla_tgt_need_explicit_conf(ha, cmd, 0)) {
+ pkt->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().
+ */
+ ctio7_status1_entry_t *ctio =
+ (ctio7_status1_entry_t *)qla_tgt_get_req_pkt(vha);
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "Building additional"
+ " status packet\n"));
+
+ memcpy(ctio, pkt, sizeof(*ctio));
+ ctio->common.entry_count = 1;
+ ctio->common.dseg_count = 0;
+ ctio->flags &= ~__constant_cpu_to_le16(
+ CTIO7_FLAGS_DATA_IN);
+
+ /* Real finish is ctio_m1's finish */
+ pkt->common.handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
+ pkt->flags |= __constant_cpu_to_le16(
+ CTIO7_FLAGS_DONT_RET_CTIO);
+ qla24xx_init_ctio_ret_entry((ctio7_status0_entry_t *)ctio,
+ &prm);
+ printk("Status CTIO7: %p\n", ctio);
+ }
+ } else
+ qla24xx_init_ctio_ret_entry(pkt, &prm);
+
+
+ cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "Xmitting CTIO7 response pkt for 24xx:"
+ " %p scsi_status: 0x%02x\n", pkt, scsi_status));
+
+ qla2x00_isp_cmd(vha, vha->req);
+ if (cmd->locked_rsp)
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return 0;
+
+out_unmap_unlock:
+ if (cmd->sg_mapped)
+ qla_tgt_unmap_sg(vha, cmd);
+ if (cmd->locked_rsp)
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return res;
+}
+
+int qla_tgt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
+{
+ 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;
+ void *p;
+ 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 (qla_tgt_issue_marker(vha, 0) != QLA_SUCCESS)
+ return -EIO;
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "CTIO_start: vha(%d)", (int)vha->vp_idx));
+
+ /* Calculate number of entries and segments required */
+ if (qla_tgt_pci_map_calc_cnt(&prm) != 0)
+ return -ENOMEM;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ /* Does F/W have an IOCBs for this request */
+ res = qla_tgt_check_reserve_free_req(vha, prm.req_cnt);
+ if (res != 0)
+ goto out_unlock_free_unmap;
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ ctio7_status0_entry_t *pkt;
+ res = qla24xx_build_ctio_pkt(&prm, vha);
+ if (unlikely(res != 0))
+ goto out_unlock_free_unmap;
+ pkt = (ctio7_status0_entry_t *)prm.pkt;
+ pkt->flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
+ CTIO7_FLAGS_STATUS_MODE_0);
+ qla24xx_load_data_segments(&prm, vha);
+ p = pkt;
+ } else {
+ ctio_common_entry_t *pkt;
+ qla2xxx_build_ctio_pkt(&prm, vha);
+ pkt = (ctio_common_entry_t *)prm.pkt;
+ pkt->flags = __constant_cpu_to_le16(OF_FAST_POST | OF_DATA_OUT);
+ qla2xxx_load_data_segments(&prm, vha);
+ p = pkt;
+ }
+
+ cmd->state = QLA_TGT_STATE_NEED_DATA;
+
+ qla2x00_isp_cmd(vha, vha->req);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return res;
+
+out_unlock_free_unmap:
+ if (cmd->sg_mapped)
+ qla_tgt_unmap_sg(vha, cmd);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return res;
+}
+EXPORT_SYMBOL(qla_tgt_rdy_to_xfer);
+
+/* If hardware_lock held on entry, might drop it, then reaquire */
+static void qla2xxx_send_term_exchange(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
+ atio_entry_t *atio, int ha_locked)
+{
+ struct qla_hw_data *ha = vha->hw;
+ ctio_ret_entry_t *ctio;
+ unsigned long flags = 0; /* to stop compiler's warning */
+ int do_tgt_cmd_done = 0;
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "Sending TERM EXCH CTIO (ha=%p)\n", ha));
+
+ /* Send marker if required */
+ if (qla_tgt_issue_marker(vha, ha_locked) != QLA_SUCCESS)
+ return;
+
+ if (!ha_locked)
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ ctio = (ctio_ret_entry_t *)qla2x00_req_pkt(vha);
+ if (ctio == NULL) {
+ printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", vha->vp_idx, __func__);
+ goto out_unlock;
+ }
+
+ ctio->entry_type = CTIO_RET_TYPE;
+ ctio->entry_count = 1;
+ if (cmd != NULL) {
+ if (cmd->state < QLA_TGT_STATE_PROCESSED) {
+ printk(KERN_ERR "qla_target(%d): Terminating cmd %p with "
+ "incorrect state %d\n", vha->vp_idx, cmd,
+ cmd->state);
+ } else
+ do_tgt_cmd_done = 1;
+ }
+ ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+
+ /* Set IDs */
+ SET_TARGET_ID(ha, ctio->target, GET_TARGET_ID(ha, atio));
+ ctio->rx_id = atio->rx_id;
+
+ /* Most likely, it isn't needed */
+ ctio->residual = atio->data_length;
+ if (ctio->residual != 0)
+ ctio->scsi_status |= SS_RESIDUAL_UNDER;
+
+ ctio->flags = __constant_cpu_to_le16(OF_FAST_POST | OF_TERM_EXCH |
+ OF_NO_DATA | OF_SS_MODE_1);
+ ctio->flags |= __constant_cpu_to_le16(OF_INC_RC);
+
+ qla2x00_isp_cmd(vha, vha->req);
+
+out_unlock:
+ if (!ha_locked)
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if (do_tgt_cmd_done) {
+ if (!ha_locked && !in_interrupt())
+ msleep(250); /* just in case */
+
+ ha->qla2x_tmpl->free_cmd(cmd);
+ }
+}
+
+/* If hardware_lock held on entry, might drop it, then reaquire */
+static void qla24xx_send_term_exchange(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
+ atio7_entry_t *atio, int ha_locked)
+{
+ struct qla_hw_data *ha = vha->hw;
+ ctio7_status1_entry_t *ctio;
+ unsigned long flags = 0; /* to stop compiler's warning */
+ int do_tgt_cmd_done = 0;
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "Sending TERM EXCH CTIO7 (ha=%p)\n", ha));
+
+ /* Send marker if required */
+ if (qla_tgt_issue_marker(vha, ha_locked) != QLA_SUCCESS)
+ return;
+
+ if (!ha_locked)
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ ctio = (ctio7_status1_entry_t *)qla2x00_req_pkt(vha);
+ if (ctio == NULL) {
+ printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", vha->vp_idx, __func__);
+ goto out_unlock;
+ }
+
+ ctio->common.entry_type = CTIO_TYPE7;
+ ctio->common.entry_count = 1;
+ if (cmd != NULL) {
+ ctio->common.nport_handle = cmd->loop_id;
+ if (cmd->state < QLA_TGT_STATE_PROCESSED) {
+ printk(KERN_ERR "qla_target(%d): Terminating cmd %p with "
+ "incorrect state %d\n", vha->vp_idx, cmd,
+ cmd->state);
+ } else
+ do_tgt_cmd_done = 1;
+ } else
+ ctio->common.nport_handle = CTIO7_NHANDLE_UNRECOGNIZED;
+ ctio->common.handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+ ctio->common.timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio->common.vp_index = vha->vp_idx;
+ ctio->common.initiator_id[0] = atio->fcp_hdr.s_id[2];
+ ctio->common.initiator_id[1] = atio->fcp_hdr.s_id[1];
+ ctio->common.initiator_id[2] = atio->fcp_hdr.s_id[0];
+ ctio->common.exchange_addr = atio->exchange_addr;
+ ctio->flags = (atio->attr << 9) | __constant_cpu_to_le16(
+ CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
+ ctio->ox_id = swab16(atio->fcp_hdr.ox_id);
+
+ /* Most likely, it isn't needed */
+ ctio->residual = get_unaligned((uint32_t *)
+ &atio->fcp_cmnd.add_cdb[atio->fcp_cmnd.add_cdb_len]);
+ if (ctio->residual != 0)
+ ctio->scsi_status |= SS_RESIDUAL_UNDER;
+
+ qla2x00_isp_cmd(vha, vha->req);
+
+out_unlock:
+ if (!ha_locked)
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if (do_tgt_cmd_done) {
+ if (!ha_locked && !in_interrupt())
+ msleep(250); /* just in case */
+
+ ha->qla2x_tmpl->free_cmd(cmd);
+ }
+}
+
+void qla_tgt_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(qla_tgt_free_cmd);
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_prepare_srr_ctio(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
+ void *ctio)
+{
+ struct srr_ctio *sc;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+ struct srr_imm *imm;
+
+ tgt->ctio_srr_id++;
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): CTIO with SRR "
+ "status received\n", vha->vp_idx));
+
+ if (!ctio) {
+ printk(KERN_ERR "qla_target(%d): SRR CTIO, "
+ "but ctio is NULL\n", vha->vp_idx);
+ return EINVAL;
+ }
+
+ dump_stack();
+
+ 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);
+ DEBUG22(qla_printk(KERN_INFO, ha, "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) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "%s", "Scheduling srr work\n"));
+ schedule_work(&tgt->srr_work);
+ } else {
+ printk(KERN_ERR "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 srr_imm *ti;
+
+ printk(KERN_ERR "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) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "IMM SRR %p deleted "
+ "(id %d)\n", imm, imm->srr_id));
+ list_del(&imm->srr_list_entry);
+ qla_tgt_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 qla_tgt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio,
+ struct qla_tgt_cmd *cmd, uint32_t status)
+{
+ struct qla_hw_data *ha = vha->hw;
+ int term = 0;
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ if (ctio != NULL) {
+ ctio7_fw_entry_t *c = (ctio7_fw_entry_t *)ctio;
+ term = !(c->flags &
+ __constant_cpu_to_le16(OF_TERM_EXCH));
+ } else
+ term = 1;
+ if (term) {
+ qla24xx_send_term_exchange(vha, cmd,
+ &cmd->atio.atio7, 1);
+ }
+ } else {
+ if (status != CTIO_SUCCESS)
+ qla_tgt_modify_command_count(vha, 1, 0);
+#if 0 /* seems, it isn't needed */
+ if (ctio != NULL) {
+ ctio_common_entry_t *c = (ctio_common_entry_t *)ctio;
+ term = !(c->flags &
+ __constant_cpu_to_le16(
+ CTIO7_FLAGS_TERMINATE));
+ } else
+ term = 1;
+ if (term) {
+ qla2xxx_send_term_exchange(vha, cmd,
+ &cmd->atio.atio2x, 1);
+ }
+#endif
+ }
+ return term;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static inline struct qla_tgt_cmd *qla_tgt_get_cmd(struct scsi_qla_host *vha, uint32_t handle)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ handle--;
+ if (ha->cmds[handle] != NULL) {
+ struct qla_tgt_cmd *cmd = ha->cmds[handle];
+ ha->cmds[handle] = NULL;
+ return cmd;
+ } else
+ return NULL;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static struct qla_tgt_cmd *qla_tgt_ctio_to_cmd(struct scsi_qla_host *vha, uint32_t handle,
+ void *ctio)
+{
+ struct qla_hw_data *ha = vha->hw;
+ 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)) {
+ DEBUG21(qla_printk(KERN_INFO, ha, "%s", "SKIP_HANDLE CTIO\n"));
+ return NULL;
+ }
+ /* handle-1 is actually used */
+ if (unlikely(handle > MAX_OUTSTANDING_COMMANDS)) {
+ printk(KERN_ERR "qla_target(%d): Wrong handle %x "
+ "received\n", vha->vp_idx, handle);
+ return NULL;
+ }
+ cmd = qla_tgt_get_cmd(vha, handle);
+ if (unlikely(cmd == NULL)) {
+ printk(KERN_WARNING "qla_target(%d): Suspicious: unable to "
+ "find the command with handle %x\n",
+ vha->vp_idx, handle);
+ return NULL;
+ }
+ } else if (ctio != NULL) {
+ struct qla_tgt_sess *sess;
+ int tag;
+ uint16_t loop_id;
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ /* We can't get loop ID from CTIO7 */
+ printk(KERN_ERR "qla_target(%d): Wrong CTIO received: "
+ "QLA24xx doesn't support NULL handles\n",
+ vha->vp_idx);
+ return NULL;
+ } else {
+ ctio_common_entry_t *c = (ctio_common_entry_t *)ctio;
+ loop_id = GET_TARGET_ID(ha, c);
+ tag = c->rx_id;
+ }
+
+ sess = ha->qla2x_tmpl->find_sess_by_loop_id(vha, loop_id);
+ if (!sess) {
+ printk(KERN_WARNING "qla_target(%d): Suspicious: "
+ "ctio_completion for non-existing session "
+ "(loop_id %d, tag %d)\n",
+ vha->vp_idx, loop_id, tag);
+ return NULL;
+ }
+ }
+
+ return cmd;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_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;
+
+ DEBUG23(qla_printk(KERN_INFO, ha, "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) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "Intermediate CTIO received"
+ " (status %x)\n", status));
+ }
+ return;
+ }
+
+ cmd = qla_tgt_ctio_to_cmd(vha, handle, ctio);
+ if (cmd == NULL) {
+ if (status != CTIO_SUCCESS)
+ qla_tgt_term_ctio_exchange(vha, ctio, NULL, status);
+ return;
+ }
+ se_cmd = &cmd->se_cmd;
+ tfo = se_cmd->se_tfo;
+
+ if (cmd->sg_mapped)
+ qla_tgt_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 */
+ printk(KERN_INFO "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:
+ printk(KERN_INFO "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:
+ printk(KERN_INFO "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 (qla_tgt_prepare_srr_ctio(vha, cmd, ctio) != 0)
+ break;
+ else
+ return;
+
+ default:
+ printk(KERN_ERR "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 (qla_tgt_term_ctio_exchange(vha, ctio, cmd, status))
+ return;
+ }
+
+ if (cmd->state == QLA_TGT_STATE_PROCESSED) {
+ DEBUG21(qla_printk(KERN_INFO, ha, "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;
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "Data received, context %x,"
+ " rx_status %d\n", 0x0, rx_status));
+
+ ha->qla2x_tmpl->handle_data(cmd);
+ return;
+ } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "Aborted command %p (tag %d) finished\n",
+ cmd, cmd->tag));
+ } else {
+ printk(KERN_ERR "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)) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "%s", "Finishing failed CTIO\n"));
+ dump_stack();
+ }
+
+ ha->qla2x_tmpl->free_cmd(cmd);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+/* called via callback from qla2xxx */
+void qla_tgt_ctio_completion(struct scsi_qla_host *vha, uint32_t handle)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+
+ if (likely(tgt == NULL)) {
+ DEBUG21(qla_printk(KERN_INFO, ha, "CTIO, but target mode not enabled"
+ " (ha %d %p handle %#x)", vha->vp_idx, ha, handle));
+ return;
+ }
+
+ tgt->irq_cmd_count++;
+ qla_tgt_do_ctio_completion(vha, handle, CTIO_SUCCESS, NULL);
+ tgt->irq_cmd_count--;
+}
+
+static inline int qla_tgt_get_fcp_task_attr(uint8_t task_codes)
+{
+ int fcp_task_attr;
+
+ switch (task_codes) {
+ case ATIO_SIMPLE_QUEUE:
+ fcp_task_attr = FCP_PTA_SIMPLE;
+ break;
+ case ATIO_HEAD_OF_QUEUE:
+ fcp_task_attr = FCP_PTA_HEADQ;
+ break;
+ case ATIO_ORDERED_QUEUE:
+ fcp_task_attr = FCP_PTA_ORDERED;
+ break;
+ case ATIO_ACA_QUEUE:
+ fcp_task_attr = FCP_PTA_ACA;
+ break;
+ case ATIO_UNTAGGED:
+ fcp_task_attr = FCP_PTA_SIMPLE;
+ break;
+ default:
+ printk(KERN_WARNING "qla_target: unknown task code %x, use "
+ "ORDERED instead\n", task_codes);
+ fcp_task_attr = FCP_PTA_ORDERED;
+ break;
+ }
+
+ return fcp_task_attr;
+}
+
+static uint32_t qla_tgt_unpack_lun(unsigned char *p)
+{
+ uint32_t lun = 0;
+
+ lun = p[1];
+ switch (p[0] >> 6) {
+ case 0:
+ break;
+ case 1:
+ lun |= (p[0] & 0x3f) << 8;
+ break;
+ default:
+ printk(KERN_WARNING "Unsupported (extended) logical unit addressing\n");
+ break;
+ }
+
+ return lun;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla2xxx_send_cmd_to_target(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
+{
+ atio_entry_t *atio = &cmd->atio.atio2x;
+ uint32_t data_length;
+ int fcp_task_attr, data_dir, bidi = 0, ret;
+ uint16_t lun, unpacked_lun;
+
+ /* make it be in network byte order */
+ lun = swab16(le16_to_cpu(atio->lun));
+ unpacked_lun = qla_tgt_unpack_lun((unsigned char *)&lun);
+ cmd->tag = atio->rx_id;
+
+ if ((atio->execution_codes & (ATIO_EXEC_READ | ATIO_EXEC_WRITE)) ==
+ (ATIO_EXEC_READ | ATIO_EXEC_WRITE)) {
+ bidi = 1;
+ data_dir = DMA_TO_DEVICE;
+ } else if (atio->execution_codes & ATIO_EXEC_READ)
+ data_dir = DMA_FROM_DEVICE;
+ else if (atio->execution_codes & ATIO_EXEC_WRITE)
+ data_dir = DMA_TO_DEVICE;
+ else
+ data_dir = DMA_NONE;
+
+ fcp_task_attr = qla_tgt_get_fcp_task_attr(atio->task_codes);
+ data_length = le32_to_cpu(atio->data_length);
+
+ DEBUG23(qla_printk(KERN_INFO, vha->hw, "qla_target: START q2x command: %p"
+ " lun: 0x%04x (tag %d)\n", cmd, lun, cmd->tag));
+ /*
+ * Dispatch command to tcm_qla2xxx fabric module code
+ */
+ ret = vha->hw->qla2x_tmpl->handle_cmd(vha, cmd, lun, data_length,
+ fcp_task_attr, data_dir, bidi);
+ return ret;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla24xx_send_cmd_to_target(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
+{
+ atio7_entry_t *atio = &cmd->atio.atio7;
+ uint32_t unpacked_lun, data_length;
+ int fcp_task_attr, data_dir, bidi = 0, ret;
+
+ cmd->tag = atio->exchange_addr;
+ unpacked_lun = qla_tgt_unpack_lun((unsigned char *)&atio->fcp_cmnd.lun);
+
+ if (atio->fcp_cmnd.rddata && atio->fcp_cmnd.wrdata) {
+ bidi = 1;
+ data_dir = DMA_TO_DEVICE;
+ } else if (atio->fcp_cmnd.rddata)
+ data_dir = DMA_FROM_DEVICE;
+ else if (atio->fcp_cmnd.wrdata)
+ data_dir = DMA_TO_DEVICE;
+ else
+ data_dir = DMA_NONE;
+
+ fcp_task_attr = qla_tgt_get_fcp_task_attr(atio->fcp_cmnd.task_attr);
+ data_length = be32_to_cpu(get_unaligned((uint32_t *)
+ &atio->fcp_cmnd.add_cdb[atio->fcp_cmnd.add_cdb_len]));
+
+ DEBUG23(qla_printk(KERN_INFO, vha->hw, "qla_target: START q24 Command %p"
+ " unpacked_lun: 0x%08x (tag %d)\n", cmd, unpacked_lun, cmd->tag));
+ /*
+ * Dispatch command to tcm_qla2xxx fabric module code
+ */
+ ret = vha->hw->qla2x_tmpl->handle_cmd(vha, cmd, unpacked_lun, data_length,
+ fcp_task_attr, data_dir, bidi);
+ return ret;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_send_cmd_to_target(struct scsi_qla_host *vha,
+ struct qla_tgt_cmd *cmd, struct qla_tgt_sess *sess)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ cmd->sess = sess;
+ cmd->loop_id = sess->loop_id;
+ cmd->conf_compl_supported = sess->conf_compl_supported;
+
+ return (IS_FWI2_CAPABLE(ha)) ? qla24xx_send_cmd_to_target(vha, cmd) :
+ qla2xxx_send_cmd_to_target(vha, cmd);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_handle_cmd_for_atio(struct scsi_qla_host *vha, atio_t *atio)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+ struct qla_tgt_sess *sess;
+ struct qla_tgt_cmd *cmd;
+ int res = 0;
+
+ if (unlikely(tgt->tgt_stop)) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "New command while device %p"
+ " is shutting down\n", tgt));
+ return -EFAULT;
+ }
+
+ cmd = kmem_cache_zalloc(qla_tgt_cmd_cachep, GFP_ATOMIC);
+ if (!cmd) {
+ printk(KERN_INFO "qla_target(%d): Allocation of cmd "
+ "failed\n", vha->vp_idx);
+ return -ENOMEM;
+ }
+
+ memcpy(&cmd->atio.atio2x, atio, sizeof(*atio));
+ cmd->state = QLA_TGT_STATE_NEW;
+ cmd->locked_rsp = 1;
+ cmd->tgt = ha->qla_tgt;
+ cmd->vha = vha;
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ atio7_entry_t *a = (atio7_entry_t *)atio;
+ sess = ha->qla2x_tmpl->find_sess_by_s_id(vha, a->fcp_hdr.s_id);
+ if (unlikely(!sess)) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Unable to find "
+ "wwn login (s_id %x:%x:%x), trying to create "
+ "it manually\n", vha->vp_idx,
+ a->fcp_hdr.s_id[0], a->fcp_hdr.s_id[1],
+ a->fcp_hdr.s_id[2]));
+ goto out_sched;
+ }
+ } else {
+ sess = ha->qla2x_tmpl->find_sess_by_loop_id(vha,
+ GET_TARGET_ID(ha, (atio_entry_t *)atio));
+ if (unlikely(!sess)) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Unable to find "
+ "wwn login (loop_id=%d), trying to create it "
+ "manually\n", vha->vp_idx,
+ GET_TARGET_ID(ha, (atio_entry_t *)atio)));
+ goto out_sched;
+ }
+ }
+
+ res = qla_tgt_send_cmd_to_target(vha, cmd, sess);
+ if (unlikely(res != 0))
+ goto out_free_cmd;
+
+ return res;
+
+out_free_cmd:
+ qla_tgt_free_cmd(cmd);
+ return res;
+
+out_sched:
+ if (atio->entry_count > 1) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "Dropping multy entry cmd %p\n", cmd));
+ res = -EBUSY;
+ goto out_free_cmd;
+ }
+ res = qla_tgt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_CMD, &cmd, sizeof(cmd));
+ if (res != 0)
+ qla_tgt_free_cmd(cmd);
+
+ return res;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_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) {
+ printk(KERN_ERR "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.notify_entry, iocb,
+ sizeof(mcmd->orig_iocb.notify_entry));
+ }
+ mcmd->tmr_func = fn;
+ mcmd->flags = flags;
+
+ switch (fn) {
+ case QLA_TGT_CLEAR_ACA:
+ DEBUG25(qla_printk(KERN_INFO, ha, "qla_target(%d): CLEAR_ACA received\n",
+ sess->vha->vp_idx));
+ tmr_func = TMR_CLEAR_ACA;
+ break;
+
+ case QLA_TGT_TARGET_RESET:
+ DEBUG25(qla_printk(KERN_INFO, ha, "qla_target(%d): TARGET_RESET received\n",
+ sess->vha->vp_idx));
+ tmr_func = TMR_TARGET_WARM_RESET;
+ break;
+
+ case QLA_TGT_LUN_RESET:
+ DEBUG25(qla_printk(KERN_INFO, ha, "qla_target(%d): LUN_RESET received\n",
+ sess->vha->vp_idx));
+ tmr_func = TMR_LUN_RESET;
+ break;
+
+ case QLA_TGT_CLEAR_TS:
+ DEBUG25(qla_printk(KERN_INFO, ha, "qla_target(%d): CLEAR_TS received\n",
+ sess->vha->vp_idx));
+ tmr_func = TMR_CLEAR_TASK_SET;
+ break;
+
+ case QLA_TGT_ABORT_TS:
+ DEBUG25(qla_printk(KERN_INFO, ha, "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:
+ DEBUG25(qla_printk(KERN_INFO, ha, "qla_target(%d): Doing ABORT_ALL_TASKS\n",
+ sess->vha->vp_idx));
+ tmr_func = 0;
+ break;
+
+ case QLA_TGT_ABORT_ALL_SESS:
+ DEBUG25(qla_printk(KERN_INFO, ha, "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
+ sess->vha->vp_idx));
+ tmr_func = 0;
+ break;
+
+ case QLA_TGT_NEXUS_LOSS_SESS:
+ DEBUG25(qla_printk(KERN_INFO, ha, "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
+ sess->vha->vp_idx));
+ tmr_func = 0;
+ break;
+
+ case QLA_TGT_NEXUS_LOSS:
+ DEBUG25(qla_printk(KERN_INFO, ha, "qla_target(%d): Doing NEXUS_LOSS\n",
+ sess->vha->vp_idx));
+ tmr_func = 0;
+ break;
+#endif
+ default:
+ printk(KERN_ERR "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->qla2x_tmpl->handle_tmr(mcmd, lun, tmr_func);
+ if (res != 0) {
+ printk(KERN_ERR "qla_target(%d): qla2x_tmpl->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 qla_tgt_handle_task_mgmt(struct scsi_qla_host *vha, void *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, res = 0;
+
+ tgt = ha->qla_tgt;
+ if (IS_FWI2_CAPABLE(ha)) {
+ atio7_entry_t *a = (atio7_entry_t *)iocb;
+
+ lun = a->fcp_cmnd.lun;
+ lun_size = sizeof(a->fcp_cmnd.lun);
+ fn = a->fcp_cmnd.task_mgmt_flags;
+ sess = ha->qla2x_tmpl->find_sess_by_s_id(vha,
+ a->fcp_hdr.s_id);
+ } else {
+ notify_entry_t *n = (notify_entry_t *)iocb;
+ /* make it be in network byte order */
+ lun = swab16(le16_to_cpu(n->lun));
+ lun_size = sizeof(lun);
+ fn = n->task_flags >> IMM_NTFY_TASK_MGMT_SHIFT;
+ sess = ha->qla2x_tmpl->find_sess_by_loop_id(vha,
+ GET_TARGET_ID(ha, n));
+ }
+ unpacked_lun = qla_tgt_unpack_lun((unsigned char *)&lun);
+
+ if (!sess) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): task mgmt fn 0x%x for "
+ "non-existant session\n", vha->vp_idx, fn));
+ res = qla_tgt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb,
+ IS_FWI2_CAPABLE(ha) ? sizeof(atio7_entry_t) :
+ sizeof(notify_entry_t));
+ if (res != 0)
+ tgt->tm_to_unknown = 1;
+
+ return res;
+ }
+
+ return qla_tgt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int __qla_tgt_abort_task(struct scsi_qla_host *vha, notify_entry_t *iocb,
+ struct qla_tgt_sess *sess)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_mgmt_cmd *mcmd;
+ uint32_t lun, unpacked_lun;
+ int rc;
+ uint16_t tag;
+
+ mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
+ if (mcmd == NULL) {
+ printk(KERN_ERR "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.notify_entry, iocb,
+ sizeof(mcmd->orig_iocb.notify_entry));
+
+ tag = le16_to_cpu(iocb->seq_id);
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ atio7_entry_t *a = (atio7_entry_t *)iocb;
+ lun = a->fcp_cmnd.lun;
+ } else {
+ notify_entry_t *n = (notify_entry_t *)iocb;
+ lun = swab16(le16_to_cpu(n->lun));
+ }
+ unpacked_lun = qla_tgt_unpack_lun((unsigned char *)&lun);
+
+ rc = ha->qla2x_tmpl->handle_tmr(mcmd, unpacked_lun, ABORT_TASK);
+ if (rc != 0) {
+ printk(KERN_ERR "qla_target(%d): qla2x_tmpl->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 qla_tgt_abort_task(struct scsi_qla_host *vha, notify_entry_t *iocb)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_sess *sess;
+ int loop_id, res;
+
+ loop_id = GET_TARGET_ID(ha, iocb);
+
+ sess = ha->qla2x_tmpl->find_sess_by_loop_id(vha, loop_id);
+ if (sess == NULL) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): task abort for unexisting "
+ "session\n", vha->vp_idx));
+ res = qla_tgt_sched_sess_work(sess->tgt, QLA_TGT_SESS_WORK_ABORT,
+ iocb, sizeof(*iocb));
+ if (res != 0)
+ sess->tgt->tm_to_unknown = 1;
+
+ return res;
+ }
+
+ return __qla_tgt_abort_task(vha, iocb, sess);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static int qla24xx_handle_els(struct scsi_qla_host *vha, notify24xx_entry_t *iocb)
+{
+ struct qla_hw_data *ha = vha->hw;
+ int res = 0;
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Port ID: 0x%02x:%02x:%02x"
+ " ELS opcode: 0x%02x\n", vha->vp_idx, iocb->port_id[0],
+ iocb->port_id[1], iocb->port_id[2], iocb->status_subcode));
+
+ switch (iocb->status_subcode) {
+ case ELS_PLOGI:
+ case ELS_FLOGI:
+ case ELS_PRLI:
+ case ELS_LOGO:
+ case ELS_PRLO:
+ res = qla_tgt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
+ break;
+ case ELS_PDISC:
+ case ELS_ADISC:
+ {
+ struct qla_tgt *tgt = ha->qla_tgt;
+ if (tgt->link_reinit_iocb_pending) {
+ qla24xx_send_notify_ack(vha, &tgt->link_reinit_iocb, 0, 0, 0);
+ tgt->link_reinit_iocb_pending = 0;
+ }
+ res = 1; /* send notify ack */
+ break;
+ }
+
+ default:
+ printk(KERN_ERR "qla_target(%d): Unsupported ELS command %x "
+ "received\n", vha->vp_idx, iocb->status_subcode);
+ res = qla_tgt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
+ break;
+ }
+
+ return res;
+}
+
+static int qla_tgt_cut_cmd_data_head(struct qla_tgt_cmd *cmd, unsigned int offset)
+{
+ int res = 0;
+ int cnt, first_sg, first_page = 0, first_page_offs = 0, i;
+ unsigned int l;
+ int cur_dst, cur_src;
+ struct scatterlist *sg;
+ size_t bufflen = 0;
+
+ first_sg = -1;
+ cnt = 0;
+ l = 0;
+ for (i = 0; i < cmd->sg_cnt; i++) {
+ l += cmd->sg[i].length;
+ if (l > offset) {
+ int sg_offs = l - cmd->sg[i].length;
+ first_sg = i;
+ if (cmd->sg[i].offset == 0) {
+ first_page_offs = offset % PAGE_SIZE;
+ first_page = (offset - sg_offs) >> PAGE_SHIFT;
+ } else {
+ DEBUG24(qla_printk(KERN_INFO, cmd->vha->hw, "i=%d, sg[i]."
+ "offset=%d, sg_offs=%d", i, cmd->sg[i].offset,
+ sg_offs));
+ if ((cmd->sg[i].offset + sg_offs) > offset) {
+ first_page_offs = offset - sg_offs;
+ first_page = 0;
+ } else {
+ int sec_page_offs = sg_offs +
+ (PAGE_SIZE - cmd->sg[i].offset);
+ first_page_offs = sec_page_offs % PAGE_SIZE;
+ first_page = 1 +
+ ((offset - sec_page_offs) >>
+ PAGE_SHIFT);
+ }
+ }
+ cnt = cmd->sg_cnt - i + (first_page_offs != 0);
+ break;
+ }
+ }
+ if (first_sg == -1) {
+ printk(KERN_ERR "qla_target(%d): Wrong offset %d, buf length %d",
+ cmd->vha->vp_idx, offset, cmd->bufflen);
+ return -EINVAL;
+ }
+
+ DEBUG24(qla_printk(KERN_INFO, cmd->vha->hw, "offset=%d, first_sg=%d, first_page=%d, "
+ "first_page_offs=%d, cmd->bufflen=%d, cmd->sg_cnt=%d", offset,
+ first_sg, first_page, first_page_offs, cmd->bufflen,
+ cmd->sg_cnt));
+
+ sg = kzalloc(cnt * sizeof(sg[0]), GFP_KERNEL);
+ if (sg == NULL) {
+ printk(KERN_ERR "qla_target(%d): Unable to allocate cut "
+ "SG (len %zd)", cmd->vha->vp_idx,
+ cnt * sizeof(sg[0]));
+ return -ENOMEM;
+ }
+ sg_init_table(sg, cnt);
+
+ cur_dst = 0;
+ cur_src = first_sg;
+ if (first_page_offs != 0) {
+ int fpgs;
+ sg_set_page(&sg[cur_dst], &sg_page(&cmd->sg[cur_src])[first_page],
+ PAGE_SIZE - first_page_offs, first_page_offs);
+ bufflen += sg[cur_dst].length;
+ DEBUG24(qla_printk(KERN_INFO, cmd->vha->hw, "cur_dst=%d, cur_src=%d,"
+ " sg[].page=%p, sg[].offset=%d, sg[].length=%d, bufflen=%zu",
+ cur_dst, cur_src, sg_page(&sg[cur_dst]), sg[cur_dst].offset,
+ sg[cur_dst].length, bufflen));
+ cur_dst++;
+
+ fpgs = (cmd->sg[cur_src].length >> PAGE_SHIFT) +
+ ((cmd->sg[cur_src].length & ~PAGE_MASK) != 0);
+ first_page++;
+ if (fpgs > first_page) {
+ sg_set_page(&sg[cur_dst],
+ &sg_page(&cmd->sg[cur_src])[first_page],
+ cmd->sg[cur_src].length - PAGE_SIZE*first_page,
+ 0);
+ DEBUG24(qla_printk(KERN_INFO, cmd->vha->hw, "fpgs=%d, cur_dst=%d,"
+ " cur_src=%d, sg[].page=%p, sg[].length=%d, bufflen=%zu",
+ fpgs, cur_dst, cur_src, sg_page(&sg[cur_dst]),
+ sg[cur_dst].length, bufflen));
+ bufflen += sg[cur_dst].length;
+ cur_dst++;
+ }
+ cur_src++;
+ }
+
+ while (cur_src < cmd->sg_cnt) {
+ sg_set_page(&sg[cur_dst], sg_page(&cmd->sg[cur_src]),
+ cmd->sg[cur_src].length, cmd->sg[cur_src].offset);
+ DEBUG24(qla_printk(KERN_INFO, cmd->vha->hw, "cur_dst=%d, cur_src=%d, "
+ "sg[].page=%p, sg[].length=%d, sg[].offset=%d, "
+ "bufflen=%zu", cur_dst, cur_src, sg_page(&sg[cur_dst]),
+ sg[cur_dst].length, sg[cur_dst].offset, bufflen));
+ bufflen += sg[cur_dst].length;
+ cur_dst++;
+ cur_src++;
+ }
+
+ if (cmd->free_sg)
+ kfree(cmd->sg);
+
+ cmd->sg = sg;
+ cmd->free_sg = 1;
+ cmd->sg_cnt = cur_dst;
+ cmd->bufflen = bufflen;
+ cmd->offset += offset;
+
+ return res;
+}
+
+static inline int qla_tgt_srr_adjust_data(struct qla_tgt_cmd *cmd,
+ uint32_t srr_rel_offs, int *xmit_type)
+{
+ int res = 0;
+ int rel_offs;
+
+ rel_offs = srr_rel_offs - cmd->offset;
+ DEBUG22(qla_printk(KERN_INFO, cmd->vha->hw, "srr_rel_offs=%d, rel_offs=%d",
+ srr_rel_offs, rel_offs));
+
+ *xmit_type = QLA_TGT_XMIT_ALL;
+
+ if (rel_offs < 0) {
+ printk(KERN_ERR "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 = qla_tgt_cut_cmd_data_head(cmd, rel_offs);
+
+ return res;
+}
+
+/* No locks, thread context */
+#warning FIXME: qla24xx_handle_srr
+static void qla24xx_handle_srr(struct scsi_qla_host *vha, struct srr_ctio *sctio,
+ struct srr_imm *imm)
+{
+ notify24xx_entry_t *ntfy = &imm->imm.notify_entry24;
+ 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;
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "SRR cmd %p, srr_ui %x\n",
+ cmd, ntfy->srr_ui));
+
+ switch (ntfy->srr_ui) {
+ case SRR_IU_STATUS:
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla24xx_send_notify_ack(vha, ntfy,
+ NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ __qla24xx_xmit_response(cmd, QLA_TGT_XMIT_STATUS, se_cmd->scsi_status);
+ break;
+ case SRR_IU_DATA_IN:
+#if 0
+ cmd->bufflen = 0;
+ if (qla_tgt_has_data(cmd)) {
+ uint32_t offset;
+ int xmit_type;
+ offset = le32_to_cpu(imm->imm.notify_entry24.srr_rel_offs);
+ if (qla_tgt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
+ goto out_reject;
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla24xx_send_notify_ack(vha, ntfy,
+ NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ __qla24xx_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
+ } else {
+ printk(KERN_ERR "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;
+ }
+#else
+ printk("q24 SRR_IU_DATA_IN, rejecting\n");
+ dump_stack();
+ goto out_reject;
+#endif
+ break;
+ case SRR_IU_DATA_OUT:
+#if 0
+ cmd->bufflen = 0;
+ cmd->sg = NULL;
+ cmd->sg_cnt = 0;
+ if (qla_tgt_has_data(cmd)) {
+ uint32_t offset;
+ int xmit_type;
+ offset = le32_to_cpu(imm->imm.notify_entry24.srr_rel_offs);
+ if (qla_tgt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
+ goto out_reject;
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla24xx_send_notify_ack(vha, ntfy,
+ NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
+ spin_unlock_irqrestore(&ha->hardware_lock. flags);
+ if (xmit_type & QLA_TGT_XMIT_DATA)
+ __qla_tgt_rdy_to_xfer(cmd);
+ } else {
+ printk(KERN_ERR "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;
+ }
+#else
+ printk("q24 SRR_IU_DATA_OUT, rejecting\n");
+ dump_stack();
+ goto out_reject;
+#endif
+ break;
+ default:
+ printk(KERN_ERR "qla_target(%d): Unknown srr_ui value %x",
+ vha->vp_idx, ntfy->srr_ui);
+ goto out_reject;
+ }
+
+ return;
+
+out_reject:
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla24xx_send_notify_ack(vha, ntfy, 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
+ qla24xx_send_term_exchange(vha, cmd, &cmd->atio.atio7, 1);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+/* No locks, thread context */
+static void qla2xxx_handle_srr(struct scsi_qla_host *vha, struct srr_ctio *sctio,
+ struct srr_imm *imm)
+{
+ notify_entry_t *ntfy = &imm->imm.notify_entry;
+ 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;
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "SRR cmd %p, srr_ui %x\n",
+ cmd, ntfy->srr_ui));
+
+ switch (ntfy->srr_ui) {
+ case SRR_IU_STATUS:
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla2xxx_send_notify_ack(vha, ntfy, 0, 0, 0,
+ NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ __qla2xxx_xmit_response(cmd, QLA_TGT_XMIT_STATUS, se_cmd->scsi_status);
+ break;
+ case SRR_IU_DATA_IN:
+#if 0
+ cmd->bufflen = 0;
+ if (qla_tgt_has_data(cmd)) {
+ uint32_t offset;
+ int xmit_type;
+ offset = le32_to_cpu(imm->imm.notify_entry.srr_rel_offs);
+ if (qla_tgt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
+ goto out_reject;
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla2xxx_send_notify_ack(vha, ntfy, 0, 0, 0,
+ NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ __qla2xxx_xmit_response(cmd, xmit_type);
+ } else {
+ printk(KERN_ERR "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;
+ }
+#else
+ printk("q2x SRR_IU_DATA_IN:\n");
+ dump_stack();
+#endif
+ break;
+ case SRR_IU_DATA_OUT:
+#if 0
+ cmd->bufflen = 0;
+ cmd->sg = NULL;
+ cmd->sg_cnt = 0;
+ if (qla_tgt_has_data(cmd)) {
+ uint32_t offset;
+ int xmit_type;
+ offset = le32_to_cpu(imm->imm.notify_entry.srr_rel_offs);
+ if (qla_tgt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
+ goto out_reject;
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla2xxx_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)
+ __qla_tgt_rdy_to_xfer(cmd);
+ } else {
+ printk(KERN_ERR "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;
+ }
+#else
+ printk("q2x SRR_IU_DATA_OUT:\n");
+ dump_stack();
+#endif
+ break;
+ default:
+ printk(KERN_ERR "qla_target(%d): Unknown srr_ui value %x",
+ vha->vp_idx, ntfy->srr_ui);
+ goto out_reject;
+ }
+
+ return;
+
+out_reject:
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla2xxx_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
+ qla2xxx_send_term_exchange(vha, cmd, &cmd->atio.atio2x, 1);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+static void qla_tgt_reject_free_srr_imm(struct scsi_qla_host *vha, struct 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);
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ qla24xx_send_notify_ack(vha, &imm->imm.notify_entry24,
+ NOTIFY_ACK_SRR_FLAGS_REJECT,
+ NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
+ NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
+ } else {
+ qla2xxx_send_notify_ack(vha, &imm->imm.notify_entry,
+ 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);
+}
+
+#warning FIXME: qla_tgt_handle_srr_work()
+static void qla_tgt_handle_srr_work(struct work_struct *work)
+{
+ struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work);
+ struct scsi_qla_host *vha = NULL;
+ struct qla_hw_data *ha = tgt->ha;
+ struct srr_ctio *sctio;
+ unsigned long flags;
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "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 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) {
+ printk(KERN_ERR "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);
+ qla_tgt_reject_free_srr_imm(vha, i, 0);
+ } else
+ imm = i;
+ }
+ }
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "IMM SRR %p, CTIO SRR %p (id %d)\n",
+ imm, sctio, sctio->srr_id));
+
+ if (imm == NULL) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "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;
+ vha = cmd->vha;
+#if 0
+ /* Restore the originals, except bufflen */
+ cmd->offset = 0;
+ if (cmd->free_sg) {
+ kfree(cmd->sg);
+ cmd->free_sg = 0;
+ }
+ cmd->sg = NULL;
+ cmd->sg_cnt = 0;
+
+ se_cmd = &cmd->se_cmd;
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "SRR cmd %p (se_cmd %p, tag %d, op %x), "
+ "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd,
+ cmd->tag, T_TASK(se_cmd)->t_task_cdb[0], cmd->sg_cnt,
+ cmd->offset));
+#else
+ dump_stack();
+#endif
+ if (IS_FWI2_CAPABLE(ha))
+ qla24xx_handle_srr(vha, sctio, imm);
+ else
+ qla2xxx_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 qla_tgt_prepare_srr_imm(struct scsi_qla_host *vha, void *iocb)
+{
+ struct srr_imm *imm;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+ notify_entry_t *iocb2x = (notify_entry_t *)iocb;
+ notify24xx_entry_t *iocb24 = (notify24xx_entry_t *)iocb;
+ struct srr_ctio *sctio;
+
+ tgt->imm_srr_id++;
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): SRR received\n",
+ vha->vp_idx));
+
+ imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
+ if (imm != NULL) {
+ memcpy(&imm->imm.notify_entry, iocb,
+ sizeof(imm->imm.notify_entry));
+
+ /* 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);
+ DEBUG22(qla_printk(KERN_INFO, ha, "IMM NTFY SRR %p added (id %d,"
+ " ui %x)\n", imm, imm->srr_id, iocb24->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) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "%s", "Scheduling srr work\n"));
+ schedule_work(&tgt->srr_work);
+ } else {
+ DEBUG22(qla_printk(KERN_INFO, ha, "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 srr_ctio *ts;
+
+ printk(KERN_ERR "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) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "CTIO SRR %p deleted "
+ "(id %d)\n", sctio, sctio->srr_id));
+ list_del(&sctio->srr_list_entry);
+ if (IS_FWI2_CAPABLE(ha)) {
+ qla24xx_send_term_exchange(vha, sctio->cmd,
+ &sctio->cmd->atio.atio7, 1);
+ } else {
+ qla2xxx_send_term_exchange(vha, sctio->cmd,
+ &sctio->cmd->atio.atio2x, 1);
+ }
+ kfree(sctio);
+ }
+ }
+ spin_unlock(&tgt->srr_lock);
+ goto out_reject;
+ }
+
+ return;
+
+out_reject:
+ if (IS_FWI2_CAPABLE(ha)) {
+ qla24xx_send_notify_ack(vha, iocb24,
+ NOTIFY_ACK_SRR_FLAGS_REJECT,
+ NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
+ NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
+ } else {
+ qla2xxx_send_notify_ack(vha, iocb2x,
+ 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 qla_tgt_handle_imm_notify(struct scsi_qla_host *vha, void *iocb)
+{
+ struct qla_hw_data *ha = vha->hw;
+ notify_entry_t *iocb2x = (notify_entry_t *)iocb;
+ notify24xx_entry_t *iocb24 = (notify24xx_entry_t *)iocb;
+ uint32_t add_flags = 0;
+ int send_notify_ack = 1;
+ uint16_t status;
+
+ status = le16_to_cpu(iocb2x->status);
+ switch (status) {
+ case IMM_NTFY_LIP_RESET:
+ {
+ if (IS_FWI2_CAPABLE(ha)) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): LIP reset"
+ " (loop %#x), subcode %x\n", vha->vp_idx,
+ le16_to_cpu(iocb24->nport_handle),
+ iocb24->status_subcode));
+ } else {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): LIP reset"
+ " (I %#x)\n", vha->vp_idx, GET_TARGET_ID(ha, iocb2x)));
+ /* set the Clear LIP reset event flag */
+ add_flags |= NOTIFY_ACK_CLEAR_LIP_RESET;
+ }
+ if (qla_tgt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0)
+ send_notify_ack = 0;
+ break;
+ }
+
+ case IMM_NTFY_LIP_LINK_REINIT:
+ {
+ struct qla_tgt *tgt = ha->qla_tgt;
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): LINK REINIT (loop %#x, "
+ "subcode %x)\n", vha->vp_idx,
+ le16_to_cpu(iocb24->nport_handle),
+ iocb24->status_subcode));
+ if (tgt->link_reinit_iocb_pending)
+ qla24xx_send_notify_ack(vha, &tgt->link_reinit_iocb, 0, 0, 0);
+ memcpy(&tgt->link_reinit_iocb, iocb24, sizeof(*iocb24));
+ 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:
+ if (IS_FWI2_CAPABLE(ha)) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Port logout (loop "
+ "%#x, subcode %x)\n", vha->vp_idx,
+ le16_to_cpu(iocb24->nport_handle),
+ iocb24->status_subcode));
+ } else {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Port logout (S "
+ "%08x -> L %#x)\n", vha->vp_idx,
+ le16_to_cpu(iocb2x->seq_id),
+ le16_to_cpu(iocb2x->lun)));
+ }
+ if (qla_tgt_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:
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Global TPRLO (%x)\n",
+ vha->vp_idx, status));
+ if (qla_tgt_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:
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Port config changed (%x)\n",
+ vha->vp_idx, status));
+ if (qla_tgt_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:
+ printk(KERN_WARNING "qla_target(%d): Link failure detected\n",
+ vha->vp_idx);
+ /* I_T nexus loss */
+ if (qla_tgt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0)
+ send_notify_ack = 0;
+ break;
+
+ case IMM_NTFY_IOCB_OVERFLOW:
+ printk(KERN_ERR "qla_target(%d): Cannot provide requested "
+ "capability (IOCB overflowed the immediate notify "
+ "resource count)\n", vha->vp_idx);
+ break;
+
+ case IMM_NTFY_ABORT_TASK:
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Abort Task (S %08x I %#x -> "
+ "L %#x)\n", vha->vp_idx, le16_to_cpu(iocb2x->seq_id),
+ GET_TARGET_ID(ha, iocb2x), le16_to_cpu(iocb2x->lun)));
+ if (qla_tgt_abort_task(vha, iocb2x) == 0)
+ send_notify_ack = 0;
+ break;
+
+ case IMM_NTFY_RESOURCE:
+ printk(KERN_ERR "qla_target(%d): Out of resources, host %ld\n",
+ vha->vp_idx, vha->host_no);
+ break;
+
+ case IMM_NTFY_MSG_RX:
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Immediate notify task %x\n",
+ vha->vp_idx, iocb2x->task_flags));
+ if (qla_tgt_handle_task_mgmt(vha, iocb2x) == 0)
+ send_notify_ack = 0;
+ break;
+
+ case IMM_NTFY_ELS:
+ if (qla24xx_handle_els(vha, iocb24) == 0)
+ send_notify_ack = 0;
+ break;
+
+ case IMM_NTFY_SRR:
+ qla_tgt_prepare_srr_imm(vha, iocb);
+ send_notify_ack = 0;
+ break;
+
+ default:
+ printk(KERN_ERR "qla_target(%d): Received unknown immediate "
+ "notify status %x\n", vha->vp_idx, status);
+ break;
+ }
+
+ if (send_notify_ack) {
+ if (IS_FWI2_CAPABLE(ha))
+ qla24xx_send_notify_ack(vha, iocb24, 0, 0, 0);
+ else
+ qla2xxx_send_notify_ack(vha, iocb2x, add_flags, 0, 0, 0,
+ 0, 0);
+ }
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla2xxx_send_busy(struct scsi_qla_host *vha, atio_entry_t *atio)
+{
+ struct qla_hw_data *ha = vha->hw;
+ ctio_ret_entry_t *ctio;
+
+ /* Sending marker isn't necessary, since we called from ISR */
+
+ ctio = (ctio_ret_entry_t *)qla2x00_req_pkt(vha);
+ if (!ctio) {
+ printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+ "request packet", vha->vp_idx, __func__);
+ return;
+ }
+
+ ctio->entry_type = CTIO_RET_TYPE;
+ ctio->entry_count = 1;
+ ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+ ctio->scsi_status = __constant_cpu_to_le16(SAM_STAT_BUSY);
+ ctio->residual = atio->data_length;
+ if (ctio->residual != 0)
+ ctio->scsi_status |= SS_RESIDUAL_UNDER;
+
+ /* Set IDs */
+ SET_TARGET_ID(ha, ctio->target, GET_TARGET_ID(ha, atio));
+ ctio->rx_id = atio->rx_id;
+
+ ctio->flags = __constant_cpu_to_le16(OF_SSTS | OF_FAST_POST |
+ OF_NO_DATA | OF_SS_MODE_1);
+ ctio->flags |= __constant_cpu_to_le16(OF_INC_RC);
+ /*
+ * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
+ * if the explicit conformation is used.
+ */
+ qla2x00_isp_cmd(vha, vha->req);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla24xx_send_busy(struct scsi_qla_host *vha, atio7_entry_t *atio,
+ uint16_t status)
+{
+ struct qla_hw_data *ha = vha->hw;
+ ctio7_status1_entry_t *ctio;
+ struct qla_tgt_sess *sess;
+
+ sess = ha->qla2x_tmpl->find_sess_by_s_id(vha, atio->fcp_hdr.s_id);
+ if (!sess) {
+ qla24xx_send_term_exchange(vha, NULL, atio, 1);
+ return;
+ }
+
+ /* Sending marker isn't necessary, since we called from ISR */
+
+ ctio = (ctio7_status1_entry_t *)qla2x00_req_pkt(vha);
+ if (!ctio) {
+ printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+ "request packet", vha->vp_idx, __func__);
+ return;
+ }
+
+ ctio->common.entry_type = CTIO_TYPE7;
+ ctio->common.entry_count = 1;
+ ctio->common.handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+ ctio->common.nport_handle = sess->loop_id;
+ ctio->common.timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio->common.vp_index = vha->vp_idx;
+ ctio->common.initiator_id[0] = atio->fcp_hdr.s_id[2];
+ ctio->common.initiator_id[1] = atio->fcp_hdr.s_id[1];
+ ctio->common.initiator_id[2] = atio->fcp_hdr.s_id[0];
+ ctio->common.exchange_addr = atio->exchange_addr;
+ ctio->flags = (atio->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.
+ */
+ ctio->ox_id = swab16(atio->fcp_hdr.ox_id);
+ ctio->scsi_status = cpu_to_le16(status);
+ ctio->residual = get_unaligned((uint32_t *)
+ &atio->fcp_cmnd.add_cdb[atio->fcp_cmnd.add_cdb_len]);
+ if (ctio->residual != 0)
+ ctio->scsi_status |= SS_RESIDUAL_UNDER;
+
+ qla2x00_isp_cmd(vha, vha->req);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+/* called via callback from qla2xxx */
+static void qla24xx_atio_pkt(struct scsi_qla_host *vha, atio7_entry_t *atio)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+ int rc;
+
+ if (unlikely(tgt == NULL)) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "ATIO pkt, but no tgt (ha %p)", ha));
+ return;
+ }
+
+ DEBUG23(qla_printk(KERN_INFO, ha, "qla_target(%d): ATIO pkt %p:"
+ " type %02x count %02x", vha->vp_idx, atio, atio->entry_type,
+ atio->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->entry_type) {
+ case ATIO_TYPE7:
+ DEBUG21(qla_printk(KERN_INFO, ha, "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->fcp_cmnd.lun,
+ atio->fcp_cmnd.rddata, atio->fcp_cmnd.wrdata,
+ atio->fcp_cmnd.add_cdb_len,
+ be32_to_cpu(get_unaligned((uint32_t *)
+ &atio->fcp_cmnd.add_cdb[atio->fcp_cmnd.add_cdb_len])),
+ atio->fcp_hdr.s_id[0], atio->fcp_hdr.s_id[1],
+ atio->fcp_hdr.s_id[2]));
+
+ if (unlikely(atio->exchange_addr ==
+ ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
+ printk(KERN_INFO "qla_target(%d): ATIO_TYPE7 "
+ "received with UNKNOWN exchange address, "
+ "sending QUEUE_FULL\n", vha->vp_idx);
+ qla24xx_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
+ break;
+ }
+ if (likely(atio->fcp_cmnd.task_mgmt_flags == 0))
+ rc = qla_tgt_handle_cmd_for_atio(vha, (atio_t *)atio);
+ else
+ rc = qla_tgt_handle_task_mgmt(vha, atio);
+ if (unlikely(rc != 0)) {
+ if (rc == -ESRCH) {
+#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
+ qla24xx_send_busy(vha, atio, SAM_STAT_BUSY);
+#else
+ qla24xx_send_term_exchange(vha, NULL, atio, 1);
+#endif
+ } else {
+ printk(KERN_INFO "qla_target(%d): Unable to send "
+ "command to target, sending BUSY status\n",
+ vha->vp_idx);
+ qla24xx_send_busy(vha, atio, SAM_STAT_BUSY);
+ }
+ }
+ break;
+
+ case IMMED_NOTIFY_TYPE:
+ {
+ notify_entry_t *pkt = (notify_entry_t *)atio;
+ if (unlikely(pkt->entry_status != 0)) {
+ printk(KERN_ERR "qla_target(%d): Received ATIO packet %x "
+ "with error status %x\n", vha->vp_idx,
+ pkt->entry_type, pkt->entry_status);
+ break;
+ }
+ DEBUG21(qla_printk(KERN_INFO, ha, "%s", "IMMED_NOTIFY ATIO"));
+ qla_tgt_handle_imm_notify(vha, pkt);
+ break;
+ }
+
+ default:
+ printk(KERN_ERR "qla_target(%d): Received unknown ATIO atio "
+ "type %x\n", vha->vp_idx, atio->entry_type);
+ break;
+ }
+
+ tgt->irq_cmd_count--;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+/* called via callback from qla2xxx */
+static void qla_tgt_response_pkt(struct scsi_qla_host *vha, response_t *pkt)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+
+ if (unlikely(tgt == NULL)) {
+ printk(KERN_ERR "qla_target(%d): Response pkt %x received, but no "
+ "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha);
+ return;
+ }
+
+ DEBUG23(qla_printk(KERN_INFO, ha, "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:
+ {
+ ctio7_fw_entry_t *entry = (ctio7_fw_entry_t *)pkt;
+ DEBUG21(qla_printk(KERN_INFO, ha, "CTIO_TYPE7: instance %d\n", vha->vp_idx));
+ qla_tgt_do_ctio_completion(vha, entry->handle,
+ le16_to_cpu(entry->status)|(pkt->entry_status << 16),
+ entry);
+ break;
+ }
+
+ case ACCEPT_TGT_IO_TYPE:
+ {
+ atio_entry_t *atio;
+ int rc;
+ atio = (atio_entry_t *)pkt;
+ DEBUG21(qla_printk(KERN_INFO, ha, "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->status),
+ le16_to_cpu(atio->lun),
+ atio->execution_codes,
+ le32_to_cpu(atio->data_length),
+ GET_TARGET_ID(ha, atio), atio->rx_id));
+ if (atio->status != __constant_cpu_to_le16(ATIO_CDB_VALID)) {
+ printk(KERN_ERR "qla_target(%d): ATIO with error "
+ "status %x received\n", vha->vp_idx,
+ le16_to_cpu(atio->status));
+ break;
+ }
+ DEBUG23(qla_printk(KERN_INFO, ha, "FCP CDB: 0x%02x, sizeof(cdb): %lu",
+ atio->cdb[0], (unsigned long int)sizeof(atio->cdb)));
+
+ rc = qla_tgt_handle_cmd_for_atio(vha, (atio_t *)atio);
+ if (unlikely(rc != 0)) {
+ if (rc == -ESRCH) {
+#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
+ qla2xxx_send_busy(vha, atio);
+#else
+ qla2xxx_send_term_exchange(vha, NULL, atio, 1);
+#endif
+ } else {
+ printk(KERN_INFO "qla_target(%d): Unable to send "
+ "command to target, sending BUSY status\n",
+ vha->vp_idx);
+ qla2xxx_send_busy(vha, atio);
+ }
+ }
+ }
+ break;
+
+ case CONTINUE_TGT_IO_TYPE:
+ {
+ ctio_common_entry_t *entry = (ctio_common_entry_t *)pkt;
+ DEBUG21(qla_printk(KERN_INFO, ha, "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx));
+ qla_tgt_do_ctio_completion(vha, entry->handle,
+ le16_to_cpu(entry->status)|(pkt->entry_status << 16),
+ entry);
+ break;
+ }
+
+ case CTIO_A64_TYPE:
+ {
+ ctio_common_entry_t *entry = (ctio_common_entry_t *)pkt;
+ DEBUG21(qla_printk(KERN_INFO, ha, "CTIO_A64: instance %d\n", vha->vp_idx));
+ qla_tgt_do_ctio_completion(vha, entry->handle,
+ le16_to_cpu(entry->status)|(pkt->entry_status << 16),
+ entry);
+ break;
+ }
+
+ case IMMED_NOTIFY_TYPE:
+ DEBUG21(qla_printk(KERN_INFO, ha, "%s", "IMMED_NOTIFY\n"));
+ qla_tgt_handle_imm_notify(vha, (notify_entry_t *)pkt);
+ break;
+
+ case NOTIFY_ACK_TYPE:
+ if (tgt->notify_ack_expected > 0) {
+ nack_entry_t *entry = (nack_entry_t *)pkt;
+ DEBUG21(qla_printk(KERN_INFO, ha, "NOTIFY_ACK seq %08x status %x\n",
+ le16_to_cpu(entry->seq_id),
+ le16_to_cpu(entry->status)));
+ tgt->notify_ack_expected--;
+ if (entry->status != __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
+ printk(KERN_ERR "qla_target(%d): NOTIFY_ACK "
+ "failed %x\n", vha->vp_idx,
+ le16_to_cpu(entry->status));
+ }
+ } else {
+ printk(KERN_ERR "qla_target(%d): Unexpected NOTIFY_ACK "
+ "received\n", vha->vp_idx);
+ }
+ break;
+
+ case ABTS_RECV_24XX:
+ DEBUG21(qla_printk(KERN_INFO, ha, "ABTS_RECV_24XX: instance %d\n", vha->vp_idx));
+ qla24xx_handle_abts(vha, (abts24_recv_entry_t *)pkt);
+ break;
+
+ case ABTS_RESP_24XX:
+ if (tgt->abts_resp_expected > 0) {
+ abts24_resp_fw_entry_t *entry =
+ (abts24_resp_fw_entry_t *)pkt;
+ DEBUG21(qla_printk(KERN_INFO, ha, "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.
+ */
+ qla24xx_retry_term_exchange(vha, entry);
+ } else
+ printk(KERN_ERR "qla_target(%d): ABTS_RESP_24XX "
+ "failed %x (subcode %x:%x)", vha->vp_idx,
+ entry->compl_status, entry->error_subcode1,
+ entry->error_subcode2);
+ }
+ } else {
+ printk(KERN_ERR "qla_target(%d): Unexpected ABTS_RESP_24XX "
+ "received\n", vha->vp_idx);
+ }
+ break;
+
+ case MODIFY_LUN_TYPE:
+ if (tgt->modify_lun_expected > 0) {
+ modify_lun_entry_t *entry = (modify_lun_entry_t *)pkt;
+ DEBUG21(qla_printk(KERN_INFO, ha, "MODIFY_LUN %x, imm %c%d, cmd %c%d",
+ entry->status,
+ (entry->operators & MODIFY_LUN_IMM_ADD) ? '+'
+ : (entry->operators & MODIFY_LUN_IMM_SUB) ? '-'
+ : ' ',
+ entry->immed_notify_count,
+ (entry->operators & MODIFY_LUN_CMD_ADD) ? '+'
+ : (entry->operators & MODIFY_LUN_CMD_SUB) ? '-'
+ : ' ',
+ entry->command_count));
+ tgt->modify_lun_expected--;
+ if (entry->status != MODIFY_LUN_SUCCESS) {
+ printk(KERN_ERR "qla_target(%d): MODIFY_LUN "
+ "failed %x\n", vha->vp_idx,
+ entry->status);
+ }
+ } else {
+ printk(KERN_ERR "qla_target(%d): Unexpected MODIFY_LUN "
+ "received\n", (ha != NULL) ? vha->vp_idx : -1);
+ }
+ break;
+
+ case ENABLE_LUN_TYPE:
+ {
+ elun_entry_t *entry = (elun_entry_t *)pkt;
+ DEBUG21(qla_printk(KERN_INFO, ha, "ENABLE_LUN %x imm %u cmd %u \n",
+ entry->status, entry->immed_notify_count,
+ entry->command_count));
+ if (entry->status == ENABLE_LUN_ALREADY_ENABLED) {
+ DEBUG21(qla_printk(KERN_INFO, ha, "LUN is already enabled: %#x\n",
+ entry->status));
+ entry->status = ENABLE_LUN_SUCCESS;
+ } else if (entry->status == ENABLE_LUN_RC_NONZERO) {
+ DEBUG21(qla_printk(KERN_INFO, ha, "ENABLE_LUN succeeded, but with "
+ "error: %#x\n", entry->status));
+ entry->status = ENABLE_LUN_SUCCESS;
+ } else if (entry->status != ENABLE_LUN_SUCCESS) {
+ printk(KERN_ERR "qla_target(%d): ENABLE_LUN "
+ "failed %x\n", vha->vp_idx, entry->status);
+ qla_tgt_clear_mode(vha);
+ } /* else success */
+ break;
+ }
+
+ default:
+ printk(KERN_ERR "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 qla_tgt_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->qla_tgt;
+ int reason_code;
+
+ DEBUG2(printk(KERN_INFO "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->qla2x_tmpl)
+ return;
+
+ if (unlikely(tgt == NULL)) {
+ DEBUG21(qla_printk(KERN_INFO, ha, "ASYNC EVENT %#x, but no tgt"
+ " (ha %p)", 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 */
+ case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): System error async event %#x "
+ "occured", vha->vp_idx, code));
+ break;
+
+ case MBA_LOOP_UP:
+ {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Async LOOP_UP occured "
+ "(m[1]=%x, m[2]=%x, m[3]=%x, m[4]=%x)", vha->vp_idx,
+ le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
+ le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4])));
+ if (tgt->link_reinit_iocb_pending) {
+ qla24xx_send_notify_ack(vha, &tgt->link_reinit_iocb, 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:
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Async event %#x occured "
+ "(m[1]=%x, m[2]=%x, m[3]=%x, m[4]=%x)", vha->vp_idx,
+ code, le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
+ le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4])));
+ break;
+
+ case MBA_PORT_UPDATE:
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Port update async event %#x "
+ "occured: updating the ports database (m[1]=%x, m[2]=%x, "
+ "m[3]=%x, m[4]=%x)", vha->vp_idx, code,
+ le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
+ le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4])));
+ reason_code = le16_to_cpu(mailbox[2]);
+ if (reason_code == 0x4)
+ DEBUG22(qla_printk(KERN_INFO, ha, "Async MB 2: Got PLOGI Complete\n"));
+ else if (reason_code == 0x7)
+ DEBUG22(qla_printk(KERN_INFO, ha, "Async MB 2: Port Logged Out\n"));
+ break;
+
+ default:
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): Async event %#x occured: "
+ "ignore (m[1]=%x, m[2]=%x, m[3]=%x, m[4]=%x)",
+ vha->vp_idx, code,
+ le16_to_cpu(mailbox[1]), le16_to_cpu(mailbox[2]),
+ le16_to_cpu(mailbox[3]), le16_to_cpu(mailbox[4])));
+ break;
+ }
+
+ tgt->irq_cmd_count--;
+}
+
+static fc_port_t *qla_tgt_get_port_database(struct scsi_qla_host *vha,
+ const uint8_t *s_id, uint16_t loop_id)
+{
+ fc_port_t *fcport;
+ int rc;
+
+ fcport = kzalloc(sizeof(*fcport), GFP_KERNEL);
+ if (!fcport) {
+ printk(KERN_ERR "qla_target(%d): Allocation of tmp FC port failed",
+ vha->vp_idx);
+ return NULL;
+ }
+
+ DEBUG22(qla_printk(KERN_INFO, vha->hw, "loop_id %d", loop_id));
+
+ fcport->loop_id = loop_id;
+
+ rc = qla2x00_get_port_database(vha, fcport, 0);
+ if (rc != QLA_SUCCESS) {
+ printk(KERN_ERR "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 *qla_tgt_make_local_sess(struct scsi_qla_host *vha,
+ uint8_t *s_id, uint16_t loop_id)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_sess *sess = NULL;
+ fc_port_t *fcport = NULL;
+ int rc, global_resets;
+
+retry:
+ global_resets = atomic_read(&ha->qla_tgt->tgt_global_resets_count);
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ 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.
+ */
+ DEBUG22(qla_printk(KERN_INFO, ha, "Unable to find"
+ " initiator with S_ID %x:%x:%x", s_id[0],
+ s_id[1], s_id[2]));
+ } else
+ printk(KERN_ERR "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 = qla_tgt_get_port_database(vha, s_id, loop_id);
+ if (!fcport)
+ return NULL;
+
+ if (global_resets != atomic_read(&ha->qla_tgt->tgt_global_resets_count)) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_target(%d): global reset"
+ " during session discovery (counter was %d, new %d),"
+ " retrying", vha->vp_idx, global_resets,
+ atomic_read(&ha->qla_tgt->tgt_global_resets_count)));
+ goto retry;
+ }
+
+ sess = qla_tgt_create_sess(vha, fcport, true);
+
+ kfree(fcport);
+ return sess;
+}
+
+static void qla_tgt_exec_sess_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 = NULL; /* to hide compiler warnings */
+ int rc, loop_id = -1; /* to hide compiler warnings */
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "qla_tgt_exec_sess_work() processing -> prm %p\n", prm));
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ if (tgt->tgt_stop)
+ goto send;
+
+ switch (prm->type) {
+ case QLA_TGT_SESS_WORK_CMD:
+ {
+ struct qla_tgt_cmd *cmd = prm->cmd;
+ if (IS_FWI2_CAPABLE(ha)) {
+ atio7_entry_t *a = (atio7_entry_t *)&cmd->atio;
+ s_id = a->fcp_hdr.s_id;
+ } else
+ loop_id = GET_TARGET_ID(ha, (atio_entry_t *)&cmd->atio);
+ break;
+ }
+ case QLA_TGT_SESS_WORK_ABORT:
+ if (IS_FWI2_CAPABLE(ha)) {
+ be_s_id = (prm->abts.fcp_hdr_le.s_id[0] << 16) |
+ (prm->abts.fcp_hdr_le.s_id[1] << 8) |
+ prm->abts.fcp_hdr_le.s_id[2];
+
+ sess = ha->qla2x_tmpl->find_sess_by_s_id(vha,
+ (unsigned char *)&be_s_id);
+ goto after_find;
+ } else
+ loop_id = GET_TARGET_ID(ha, &prm->tm_iocb);
+ break;
+ case QLA_TGT_SESS_WORK_TM:
+ if (IS_FWI2_CAPABLE(ha))
+ s_id = prm->tm_iocb2.fcp_hdr.s_id;
+ else
+ loop_id = GET_TARGET_ID(ha, &prm->tm_iocb);
+ break;
+ default:
+ BUG_ON(1);
+ break;
+ }
+
+ if (IS_FWI2_CAPABLE(ha))
+ sess = ha->qla2x_tmpl->find_sess_by_s_id(vha, s_id);
+ else
+ sess = ha->qla2x_tmpl->find_sess_by_loop_id(vha, loop_id);
+
+after_find:
+ if (sess != NULL) {
+ DEBUG22(qla_printk(KERN_INFO, ha, "sess %p found\n", sess));
+ qla_tgt_sess_get(sess);
+ } else {
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ mutex_lock(&ha->tgt_mutex);
+ sess = qla_tgt_make_local_sess(vha, s_id, loop_id);
+ mutex_unlock(&ha->tgt_mutex);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ /* sess has got an extra creation ref */
+ }
+
+send:
+ if ((sess == NULL) || tgt->tgt_stop)
+ goto out_term;
+
+ switch (prm->type) {
+ case QLA_TGT_SESS_WORK_CMD:
+ {
+ struct qla_tgt_cmd *cmd = prm->cmd;
+ if (tgt->tm_to_unknown) {
+ /*
+ * Cmd might be already aborted behind us, so be safe
+ * and abort it. It should be OK, initiator will retry
+ * it.
+ */
+ goto out_term;
+ }
+ rc = qla_tgt_send_cmd_to_target(vha, cmd, sess);
+ break;
+ }
+ case QLA_TGT_SESS_WORK_ABORT:
+ if (IS_FWI2_CAPABLE(ha))
+ rc = __qla24xx_handle_abts(vha, &prm->abts, sess);
+ else
+ rc = __qla_tgt_abort_task(vha, &prm->tm_iocb, sess);
+ break;
+ case QLA_TGT_SESS_WORK_TM:
+ {
+ uint32_t lun, unpacked_lun;
+ int lun_size, fn;
+ void *iocb;
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ atio7_entry_t *a = &prm->tm_iocb2;
+ iocb = a;
+ lun = a->fcp_cmnd.lun;
+ lun_size = sizeof(a->fcp_cmnd.lun);
+ fn = a->fcp_cmnd.task_mgmt_flags;
+ } else {
+ notify_entry_t *n = &prm->tm_iocb;
+ iocb = n;
+ /* make it be in network byte order */
+ lun = swab16(le16_to_cpu(n->lun));
+ lun_size = sizeof(lun);
+ fn = n->task_flags >> IMM_NTFY_TASK_MGMT_SHIFT;
+ }
+ unpacked_lun = qla_tgt_unpack_lun((unsigned char *)&lun);
+
+ rc = qla_tgt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
+ break;
+ }
+ default:
+ BUG_ON(1);
+ break;
+ }
+
+ if (rc != 0)
+ goto out_term;
+
+ if (sess != NULL)
+ qla_tgt_sess_put(sess);
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return;
+
+out_term:
+ switch (prm->type) {
+ case QLA_TGT_SESS_WORK_CMD:
+ {
+ struct qla_tgt_cmd *cmd = prm->cmd;
+ DEBUG22(qla_printk(KERN_INFO, ha, "Terminating work cmd %p", cmd));
+ /*
+ * cmd has not sent to target yet, so pass NULL as the second
+ * argument
+ */
+ if (IS_FWI2_CAPABLE(ha))
+ qla24xx_send_term_exchange(vha, NULL, &cmd->atio.atio7, 1);
+ else
+ qla2xxx_send_term_exchange(vha, NULL, &cmd->atio.atio2x, 1);
+ break;
+ }
+ case QLA_TGT_SESS_WORK_ABORT:
+ if (IS_FWI2_CAPABLE(ha))
+ qla24xx_send_abts_resp(vha, &prm->abts,
+ FCP_TMF_REJECTED, false);
+ else
+ qla2xxx_send_notify_ack(vha, &prm->tm_iocb, 0,
+ 0, 0, 0, 0, 0);
+ break;
+ case QLA_TGT_SESS_WORK_TM:
+ if (IS_FWI2_CAPABLE(ha))
+ qla24xx_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
+ else
+ qla2xxx_send_notify_ack(vha, &prm->tm_iocb, 0,
+ 0, 0, 0, 0, 0);
+ break;
+ default:
+ BUG_ON(1);
+ break;
+ }
+ if (sess != NULL)
+ qla_tgt_sess_put(sess);
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+static void qla_tgt_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;
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
+
+ DEBUG22(qla_printk(KERN_INFO, ha, "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);
+
+ qla_tgt_exec_sess_work(tgt, prm);
+
+ spin_lock_irqsave(&tgt->sess_work_lock, flags);
+
+ kfree(prm);
+ }
+ spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ spin_lock(&tgt->sess_work_lock);
+ if (list_empty(&tgt->sess_works_list)) {
+ tgt->sess_works_pending = 0;
+ tgt->tm_to_unknown = 0;
+ }
+ spin_unlock(&tgt->sess_work_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+/* Must be called under tgt_host_action_mutex */
+int qla_tgt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha)
+{
+ struct qla_tgt *tgt;
+ int sg_tablesize;
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "Registering target for host %ld(%p)",
+ base_vha->host_no, ha));
+
+ BUG_ON((ha->qla_tgt != NULL) || (ha->qla2x_tmpl != NULL));
+
+ tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
+ if (!tgt) {
+ printk(KERN_ERR "Unable to allocate struct qla_tgt\n");
+ return -ENOMEM;
+ }
+
+ 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 *))qla_tgt_del_sess_work_fn);
+ spin_lock_init(&tgt->sess_work_lock);
+ INIT_WORK(&tgt->sess_work, qla_tgt_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, qla_tgt_handle_srr_work);
+ atomic_set(&tgt->tgt_global_resets_count, 0);
+
+ ha->qla_tgt = tgt;
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ printk(KERN_INFO "qla_target(%d): using 64 Bit PCI "
+ "addressing", base_vha->vp_idx);
+ tgt->tgt_enable_64bit_addr = 1;
+ /* 3 is reserved */
+ sg_tablesize =
+ QLA_MAX_SG_24XX(base_vha->req->length - 3);
+ tgt->datasegs_per_cmd = DATASEGS_PER_COMMAND_24XX;
+ tgt->datasegs_per_cont = DATASEGS_PER_CONT_24XX;
+ } else {
+ if (ha->flags.enable_64bit_addressing) {
+ printk(KERN_INFO "qla_target(%d): 64 Bit PCI "
+ "addressing enabled", base_vha->vp_idx);
+ tgt->tgt_enable_64bit_addr = 1;
+ /* 3 is reserved */
+ sg_tablesize =
+ QLA_MAX_SG64(base_vha->req->length - 3);
+ tgt->datasegs_per_cmd = DATASEGS_PER_COMMAND64;
+ tgt->datasegs_per_cont = DATASEGS_PER_CONT64;
+ } else {
+ printk(KERN_INFO "qla_target(%d): Using 32 Bit "
+ "PCI addressing", base_vha->vp_idx);
+ sg_tablesize =
+ QLA_MAX_SG32(base_vha->req->length - 3);
+ tgt->datasegs_per_cmd = DATASEGS_PER_COMMAND32;
+ tgt->datasegs_per_cont = DATASEGS_PER_CONT32;
+ }
+ }
+
+ return 0;
+}
+
+/* Must be called under tgt_host_action_mutex */
+int qla_tgt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
+{
+ if (!ha->qla_tgt) {
+ printk(KERN_ERR "qla_target(%d): Can't remove "
+ "existing target", vha->vp_idx);
+ return 0;
+ }
+
+ DEBUG21(qla_printk(KERN_INFO, ha, "Unregistering target for host %ld(%p)",
+ vha->host_no, ha));
+ qla_tgt_release(ha->qla_tgt);
+
+ return 0;
+}
+
+/* Must be called under HW lock */
+void qla_tgt_set_mode(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ switch (ql2x_ini_mode) {
+ case QLA2X_INI_MODE_DISABLED:
+ case QLA2X_INI_MODE_EXCLUSIVE:
+ vha->host->active_mode = MODE_TARGET;
+ break;
+ case QLA2X_INI_MODE_ENABLED:
+ vha->host->active_mode |= MODE_TARGET;
+ break;
+ default:
+ break;
+ }
+
+ if (ha->ini_mode_force_reverse)
+ qla_reverse_ini_mode(vha);
+}
+
+/* Must be called under HW lock */
+void qla_tgt_clear_mode(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ switch (ql2x_ini_mode) {
+ case QLA2X_INI_MODE_DISABLED:
+ vha->host->active_mode = MODE_UNKNOWN;
+ break;
+ case QLA2X_INI_MODE_EXCLUSIVE:
+ vha->host->active_mode = MODE_INITIATOR;
+ break;
+ case QLA2X_INI_MODE_ENABLED:
+ vha->host->active_mode &= ~MODE_TARGET;
+ break;
+ default:
+ break;
+ }
+
+ if (ha->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
+qla_tgt_enable_vha(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+ unsigned long flags;
+
+ if (!tgt) {
+ printk(KERN_ERR "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;
+ qla_tgt_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(qla_tgt_enable_vha);
+
+/*
+ * qla_tgt_disable_vha - NO LOCK HELD
+ *
+ * Disable Target Mode and reset the adapter
+ */
+void
+qla_tgt_disable_vha(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+ unsigned long flags;
+
+ if (!tgt) {
+ printk(KERN_ERR "Unable to locate qla_tgt pointer from"
+ " struct qla_hw_data\n");
+ dump_stack();
+ return;
+ }
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla_tgt_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
+qla_tgt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha)
+{
+ mutex_init(&ha->tgt_mutex);
+ mutex_init(&ha->tgt_host_action_mutex);
+ qla_tgt_clear_mode(vha);
+ qla2x00_send_enable_lun(vha, false);
+ if (IS_QLA24XX_TYPE(ha))
+ ha->atio_q_length = ATIO_ENTRY_CNT_24XX;
+ else if (IS_QLA25XX(ha))
+ ha->atio_q_length = ATIO_ENTRY_CNT_24XX;
+}
+
+void
+qla_tgt_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;
+ }
+}
+
+/*
+ * Called from qla_init.c:qla2x00_initialize_adapter()
+ */
+void
+qla_tgt_initialize_adapter(struct scsi_qla_host *vha, struct qla_hw_data *ha)
+{
+ if (IS_QLA24XX_TYPE(ha) || IS_QLA25XX(ha)) {
+ /* Enable target response to SCSI bus. */
+ if (qla_tgt_mode_enabled(vha))
+ qla2x00_send_enable_lun(vha, true);
+ else if (qla_ini_mode_enabled(vha))
+ qla2x00_send_enable_lun(vha, false);
+ }
+}
+
+/*
+ * qla_tgt_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
+qla_tgt_init_atio_q_entries(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ uint16_t cnt;
+ atio_t *pkt;
+
+ pkt = ha->atio_ring;
+ for (cnt = 0; cnt < ha->atio_q_length; cnt++) {
+ pkt->signature = ATIO_PROCESSED;
+ pkt++;
+ }
+
+}
+
+/*
+ * qla_tgt_24xx_process_atio_queue() - Process ATIO queue entries.
+ * @ha: SCSI driver HA context
+ */
+void
+qla_tgt_24xx_process_atio_queue(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
+ atio_t *pkt;
+ int cnt, i;
+
+ if (!vha->flags.online)
+ return;
+
+ while (ha->atio_ring_ptr->signature != ATIO_PROCESSED) {
+ pkt = ha->atio_ring_ptr;
+ cnt = pkt->entry_count;
+
+ qla24xx_atio_pkt_all_vps(vha, (atio7_entry_t *)pkt);
+
+ for (i = 0; i < cnt; i++) {
+ ha->atio_ring_index++;
+ if (ha->atio_ring_index == ha->atio_q_length) {
+ ha->atio_ring_index = 0;
+ ha->atio_ring_ptr = ha->atio_ring;
+ } else
+ ha->atio_ring_ptr++;
+
+ pkt->signature = ATIO_PROCESSED;
+ pkt = ha->atio_ring_ptr;
+ }
+ wmb();
+ }
+
+ /* Adjust ring index */
+ WRT_REG_DWORD(&reg->atio_q_out, ha->atio_ring_index);
+}
+
+void
+qla_tgt_24xx_config_rings(struct scsi_qla_host *vha, device_reg_t __iomem *reg)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+#warning FIXME: atio_q in/out for ha->mqenable=1..?
+ if (ha->mqenable) {
+#if 0
+ WRT_REG_DWORD(&reg->isp25mq.atio_q_in, 0);
+ WRT_REG_DWORD(&reg->isp25mq.atio_q_out, 0);
+ RD_REG_DWORD(&reg->isp25mq.atio_q_out);
+#endif
+ } else {
+ /* Setup APTIO registers for target mode */
+ WRT_REG_DWORD(&reg->isp24.atio_q_in, 0);
+ WRT_REG_DWORD(&reg->isp24.atio_q_out, 0);
+ RD_REG_DWORD(&reg->isp24.atio_q_out);
+ }
+}
+
+void
+qla_tgt_2x00_config_nvram_stage1(struct scsi_qla_host *vha, nvram_t *nv)
+{
+ struct qla_hw_data *ha = vha->hw;
+ /*
+ * Setup driver NVRAM options.
+ */
+ if (!IS_QLA2100(ha)) {
+ /* Check if target mode enabled */
+ if (qla_tgt_mode_enabled(vha)) {
+ if (!ha->saved_set) {
+ /* We save only once */
+ ha->saved_firmware_options[0] = nv->firmware_options[0];
+ ha->saved_firmware_options[1] = nv->firmware_options[1];
+ ha->saved_add_firmware_options[0] = nv->add_firmware_options[0];
+ ha->saved_add_firmware_options[1] = nv->add_firmware_options[1];
+ ha->saved_set = 1;
+ }
+ /* Enable target mode */
+ nv->firmware_options[0] |= BIT_4;
+ /* Disable ini mode, if requested */
+ if (!qla_ini_mode_enabled(vha))
+ nv->firmware_options[0] |= BIT_5;
+
+ /* Disable Full Login after LIP */
+ nv->firmware_options[1] &= ~BIT_5;
+ /* Enable initial LIP */
+ nv->firmware_options[1] &= BIT_1;
+ /* Enable FC tapes support */
+ nv->add_firmware_options[1] |= BIT_4;
+ /* Enable Command Queuing in Target Mode */
+ nv->add_firmware_options[1] |= BIT_6;
+ } else {
+ if (ha->saved_set) {
+ nv->firmware_options[0] = ha->saved_firmware_options[0];
+ nv->firmware_options[1] = ha->saved_firmware_options[1];
+ nv->add_firmware_options[0] = ha->saved_add_firmware_options[0];
+ nv->add_firmware_options[1] = ha->saved_add_firmware_options[1];
+ }
+ }
+ }
+
+ if (!IS_QLA2100(ha)) {
+ if (ha->enable_class_2) {
+ if (vha->flags.init_done) {
+ fc_host_supported_classes(vha->host) =
+ FC_COS_CLASS2 | FC_COS_CLASS3;
+ }
+ nv->add_firmware_options[1] |= BIT_0;
+ } else {
+ if (vha->flags.init_done) {
+ fc_host_supported_classes(vha->host) =
+ FC_COS_CLASS3;
+ }
+ nv->add_firmware_options[1] &= BIT_0;
+ }
+ }
+}
+
+void
+qla_tgt_2x00_config_nvram_stage2(struct scsi_qla_host *vha, init_cb_t *icb)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ if (ha->node_name_set) {
+ memcpy(icb->node_name, ha->tgt_node_name, WWN_SIZE);
+ icb->firmware_options[1] |= BIT_6;
+ }
+}
+
+void
+qla_tgt_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->saved_set) {
+ /* We save only once */
+ ha->saved_exchange_count = nv->exchange_count;
+ ha->saved_firmware_options_1 = nv->firmware_options_1;
+ ha->saved_firmware_options_2 = nv->firmware_options_2;
+ ha->saved_firmware_options_3 = nv->firmware_options_3;
+ ha->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);
+ } else {
+ if (ha->saved_set) {
+ nv->exchange_count = ha->saved_exchange_count;
+ nv->firmware_options_1 = ha->saved_firmware_options_1;
+ nv->firmware_options_2 = ha->saved_firmware_options_2;
+ nv->firmware_options_3 = ha->saved_firmware_options_3;
+ }
+ }
+
+ /* out-of-order frames reassembly */
+ nv->firmware_options_3 |= BIT_6|BIT_9;
+
+ if (ha->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
+qla_tgt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, struct init_cb_24xx *icb)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ if (ha->node_name_set) {
+ memcpy(icb->node_name, ha->tgt_node_name, WWN_SIZE);
+ icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14);
+ }
+}
+
+void
+qla_tgt_abort_isp(struct scsi_qla_host *vha)
+{
+ /* Enable target response to SCSI bus. */
+ if (qla_tgt_mode_enabled(vha))
+ qla2x00_send_enable_lun(vha, true);
+}
+
+int
+qla_tgt_2x00_process_response_error(struct scsi_qla_host *vha, sts_entry_t *pkt)
+{
+ if (!qla_tgt_mode_enabled(vha))
+ return 0;
+
+ switch (pkt->entry_type) {
+ case ACCEPT_TGT_IO_TYPE:
+ case CONTINUE_TGT_IO_TYPE:
+ case CTIO_A64_TYPE:
+ case IMMED_NOTIFY_TYPE:
+ case NOTIFY_ACK_TYPE:
+ case ENABLE_LUN_TYPE:
+ case MODIFY_LUN_TYPE:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+int
+qla_tgt_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
+qla_tgt_modify_vp_config(struct scsi_qla_host *vha, struct vp_config_entry_24xx *vpmod)
+{
+ if (qla_tgt_mode_enabled(vha)) {
+ DEBUG11(printk("MODE_TARGET enabled, clearing BIT_5\n"));
+ vpmod->options_idx1 &= ~BIT_5;
+ }
+ /* Disable ini mode, if requested */
+ if (!qla_ini_mode_enabled(vha)) {
+ DEBUG11(printk("MODE_INITIATOR disabled, clearing BIT_4\n"));
+ vpmod->options_idx1 &= ~BIT_4;
+ }
+}
+
+void
+qla_tgt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha)
+{
+ mutex_init(&ha->tgt_mutex);
+ mutex_init(&ha->tgt_host_action_mutex);
+ qla_tgt_clear_mode(base_vha);
+}
+
+int
+qla_tgt_mem_alloc(struct qla_hw_data *ha)
+{
+ if (IS_FWI2_CAPABLE(ha)) {
+ ha->tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) *
+ MAX_MULTI_ID_FABRIC, GFP_KERNEL);
+ if (!ha->tgt_vp_map)
+ return -ENOMEM;
+
+ ha->atio_ring = dma_alloc_coherent(&ha->pdev->dev,
+ (ha->atio_q_length + 1) * sizeof(atio_t),
+ &ha->atio_dma, GFP_KERNEL);
+ if (!ha->atio_ring) {
+ kfree(ha->tgt_vp_map);
+ return -ENOMEM;
+ }
+ }
+
+ return 0;
+}
+
+void
+qla_tgt_mem_free(struct qla_hw_data *ha)
+{
+ if (ha->atio_ring) {
+ dma_free_coherent(&ha->pdev->dev, (ha->atio_q_length + 1) *
+ sizeof(atio_t), ha->atio_ring, ha->atio_dma);
+ }
+ kfree(ha->tgt_vp_map);
+}
+
+static int __init qla_tgt_parse_ini_mode(void)
+{
+ if (strcasecmp(qlini_mode, QLA2X_INI_MODE_STR_EXCLUSIVE) == 0)
+ ql2x_ini_mode = QLA2X_INI_MODE_EXCLUSIVE;
+ else if (strcasecmp(qlini_mode, QLA2X_INI_MODE_STR_DISABLED) == 0)
+ ql2x_ini_mode = QLA2X_INI_MODE_DISABLED;
+ else if (strcasecmp(qlini_mode, QLA2X_INI_MODE_STR_ENABLED) == 0)
+ ql2x_ini_mode = QLA2X_INI_MODE_ENABLED;
+ else
+ return false;
+
+ return true;
+}
+
+int __init qla_tgt_init(void)
+{
+ BUILD_BUG_ON(sizeof(atio7_entry_t) != sizeof(atio_entry_t));
+
+ qla_tgt_cmd_cachep = NULL;
+ qla_tgt_mgmt_cmd_cachep = NULL;
+ qla_tgt_mgmt_cmd_mempool = NULL;
+
+ if (!qla_tgt_parse_ini_mode()) {
+ printk(KERN_ERR "qla_tgt_parse_ini_mode() failed\n");
+ return -EINVAL;
+ }
+
+ 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) {
+ printk(KERN_ERR "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) {
+ printk(KERN_ERR "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
+ kmem_cache_destroy(qla_tgt_cmd_cachep);
+ return -ENOMEM;
+ }
+
+ 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) {
+ printk(KERN_ERR "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
+ kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
+ kmem_cache_destroy(qla_tgt_cmd_cachep);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+void __exit qla_tgt_exit(void)
+{
+ if (qla_tgt_mgmt_cmd_mempool != NULL)
+ mempool_destroy(qla_tgt_mgmt_cmd_mempool);
+ if (qla_tgt_mgmt_cmd_cachep != NULL)
+ kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
+ if (qla_tgt_cmd_cachep != NULL)
+ kmem_cache_destroy(qla_tgt_cmd_cachep);
+}
diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h
new file mode 100644
index 0000000..32aa96d
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_target.h
@@ -0,0 +1,1137 @@
+/*
+ * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <[email protected]>
+ * Copyright (C) 2004 - 2005 Leonid Stoljar
+ * Copyright (C) 2006 Nathaniel Clark <[email protected]>
+ * Copyright (C) 2007 - 2010 ID7 Ltd.
+ *
+ * Forward port and refactoring to modern qla2xxx and target/configfs
+ *
+ * Copyright (C) 2010-2011 Nicholas A. Bellinger <[email protected]>
+ *
+ * Additional file for the target driver support.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+/*
+ * This is the global def file that is useful for including from the
+ * target portion.
+ */
+
+#ifndef __QLA_TARGET_H
+#define __QLA_TARGET_H
+
+#include "qla_def.h"
+
+/*
+ * Must be changed on any change in any initiator visible interfaces or
+ * data in the target add-on
+ */
+#define QLA2X_TARGET_MAGIC 269
+
+/*
+ * Must be changed on any change in any target visible interfaces or
+ * data in the initiator
+ */
+#define QLA2X_INITIATOR_MAGIC 57222
+
+#define QLA2X_INI_MODE_STR_EXCLUSIVE "exclusive"
+#define QLA2X_INI_MODE_STR_DISABLED "disabled"
+#define QLA2X_INI_MODE_STR_ENABLED "enabled"
+
+#define QLA2X_INI_MODE_EXCLUSIVE 0
+#define QLA2X_INI_MODE_DISABLED 1
+#define QLA2X_INI_MODE_ENABLED 2
+
+#define QLA2X00_COMMAND_COUNT_INIT 250
+#define QLA2X00_IMMED_NOTIFY_COUNT_INIT 250
+
+/*
+ * Used to mark which completion handles (for RIO Status's) are for CTIO's
+ * vs. regular (non-target) info. This is checked for in
+ * qla2x00_process_response_queue() to see if a handle coming back in a
+ * multi-complete should come to the tgt driver or be handled there by qla2xxx
+ */
+#define CTIO_COMPLETION_HANDLE_MARK BIT_29
+#if (CTIO_COMPLETION_HANDLE_MARK <= MAX_OUTSTANDING_COMMANDS)
+#error "Hackish CTIO_COMPLETION_HANDLE_MARK no longer larger than MAX_OUTSTANDING_COMMANDS"
+#endif
+#define HANDLE_IS_CTIO_COMP(h) (h & CTIO_COMPLETION_HANDLE_MARK)
+
+/* Used to mark CTIO as intermediate */
+#define CTIO_INTERMEDIATE_HANDLE_MARK BIT_30
+
+#ifndef OF_SS_MODE_0
+/*
+ * ISP target entries - Flags bit definitions.
+ */
+#define OF_SS_MODE_0 0
+#define OF_SS_MODE_1 1
+#define OF_SS_MODE_2 2
+#define OF_SS_MODE_3 3
+
+#define OF_EXPL_CONF BIT_5 /* Explicit Confirmation Requested */
+#define OF_DATA_IN BIT_6 /* Data in to initiator */
+ /* (data from target to initiator) */
+#define OF_DATA_OUT BIT_7 /* Data out from initiator */
+ /* (data from initiator to target) */
+#define OF_NO_DATA (BIT_7 | BIT_6)
+#define OF_INC_RC BIT_8 /* Increment command resource count */
+#define OF_FAST_POST BIT_9 /* Enable mailbox fast posting. */
+#define OF_CONF_REQ BIT_13 /* Confirmation Requested */
+#define OF_TERM_EXCH BIT_14 /* Terminate exchange */
+#define OF_SSTS BIT_15 /* Send SCSI status */
+#endif
+
+#ifndef DATASEGS_PER_COMMAND32
+#define DATASEGS_PER_COMMAND32 3
+#define DATASEGS_PER_CONT32 7
+#define QLA_MAX_SG32(ql) \
+ (((ql) > 0) ? (DATASEGS_PER_COMMAND32 + DATASEGS_PER_CONT32*((ql) - 1)) : 0)
+
+#define DATASEGS_PER_COMMAND64 2
+#define DATASEGS_PER_CONT64 5
+#define QLA_MAX_SG64(ql) \
+ (((ql) > 0) ? (DATASEGS_PER_COMMAND64 + DATASEGS_PER_CONT64*((ql) - 1)) : 0)
+#endif
+
+#ifndef DATASEGS_PER_COMMAND_24XX
+#define DATASEGS_PER_COMMAND_24XX 1
+#define DATASEGS_PER_CONT_24XX 5
+#define QLA_MAX_SG_24XX(ql) \
+ (min(1270, ((ql) > 0) ? (DATASEGS_PER_COMMAND_24XX + DATASEGS_PER_CONT_24XX*((ql) - 1)) : 0))
+#endif
+
+/********************************************************************\
+ * ISP Queue types left out of new QLogic driver (from old version)
+\********************************************************************/
+
+#ifndef ENABLE_LUN_TYPE
+#define ENABLE_LUN_TYPE 0x0B /* Enable LUN entry. */
+/*
+ * ISP queue - enable LUN entry structure definition.
+ */
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t sys_define_2; /* System defined. */
+ uint8_t reserved_8;
+ uint8_t reserved_1;
+ uint16_t reserved_2;
+ uint32_t reserved_3;
+ uint8_t status;
+ uint8_t reserved_4;
+ uint8_t command_count; /* Number of ATIOs allocated. */
+ uint8_t immed_notify_count; /* Number of Immediate Notify entries allocated. */
+ uint16_t reserved_5;
+ uint16_t timeout; /* 0 = 30 seconds, 0xFFFF = disable */
+ uint16_t reserved_6[20];
+} __attribute__((packed)) elun_entry_t;
+#define ENABLE_LUN_SUCCESS 0x01
+#define ENABLE_LUN_RC_NONZERO 0x04
+#define ENABLE_LUN_INVALID_REQUEST 0x06
+#define ENABLE_LUN_ALREADY_ENABLED 0x3E
+#endif
+
+#ifndef MODIFY_LUN_TYPE
+#define MODIFY_LUN_TYPE 0x0C /* Modify LUN entry. */
+/*
+ * ISP queue - modify LUN entry structure definition.
+ */
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t sys_define_2; /* System defined. */
+ uint8_t reserved_8;
+ uint8_t reserved_1;
+ uint8_t operators;
+ uint8_t reserved_2;
+ uint32_t reserved_3;
+ uint8_t status;
+ uint8_t reserved_4;
+ uint8_t command_count; /* Number of ATIOs allocated. */
+ uint8_t immed_notify_count; /* Number of Immediate Notify */
+ /* entries allocated. */
+ uint16_t reserved_5;
+ uint16_t timeout; /* 0 = 30 seconds, 0xFFFF = disable */
+ uint16_t reserved_7[20];
+} __attribute__((packed)) modify_lun_entry_t;
+#define MODIFY_LUN_SUCCESS 0x01
+#define MODIFY_LUN_CMD_ADD BIT_0
+#define MODIFY_LUN_CMD_SUB BIT_1
+#define MODIFY_LUN_IMM_ADD BIT_2
+#define MODIFY_LUN_IMM_SUB BIT_3
+#endif
+
+#define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha)) \
+ ? le16_to_cpu((iocb)->target.extended) \
+ : (uint16_t)(iocb)->target.id.standard)
+
+#ifndef IMMED_NOTIFY_TYPE
+#define IMMED_NOTIFY_TYPE 0x0D /* Immediate notify entry. */
+/*
+ * ISP queue - immediate notify entry structure definition.
+ */
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t sys_define_2; /* System defined. */
+ target_id_t target;
+ uint16_t lun;
+ uint8_t target_id;
+ uint8_t reserved_1;
+ uint16_t status_modifier;
+ uint16_t status;
+ uint16_t task_flags;
+ uint16_t seq_id;
+ uint16_t srr_rx_id;
+ uint32_t srr_rel_offs;
+ uint16_t srr_ui;
+#define SRR_IU_DATA_IN 0x1
+#define SRR_IU_DATA_OUT 0x5
+#define SRR_IU_STATUS 0x7
+ uint16_t srr_ox_id;
+ uint8_t reserved_2[30];
+ uint16_t ox_id;
+} __attribute__((packed)) notify_entry_t;
+#endif
+
+#ifndef NOTIFY_ACK_TYPE
+#define NOTIFY_ACK_TYPE 0x0E /* Notify acknowledge entry. */
+/*
+ * ISP queue - notify acknowledge entry structure definition.
+ */
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t sys_define_2; /* System defined. */
+ target_id_t target;
+ uint8_t target_id;
+ uint8_t reserved_1;
+ uint16_t flags;
+ uint16_t resp_code;
+ uint16_t status;
+ uint16_t task_flags;
+ uint16_t seq_id;
+ uint16_t srr_rx_id;
+ uint32_t srr_rel_offs;
+ uint16_t srr_ui;
+ uint16_t srr_flags;
+ uint16_t srr_reject_code;
+ uint8_t srr_reject_vendor_uniq;
+ uint8_t srr_reject_code_expl;
+ uint8_t reserved_2[26];
+ uint16_t ox_id;
+} __attribute__((packed)) nack_entry_t;
+#define NOTIFY_ACK_SRR_FLAGS_ACCEPT 0
+#define NOTIFY_ACK_SRR_FLAGS_REJECT 1
+
+#define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM 0x9
+
+#define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL 0
+#define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA 0x2a
+
+#define NOTIFY_ACK_SUCCESS 0x01
+#endif
+
+#ifndef ACCEPT_TGT_IO_TYPE
+#define ACCEPT_TGT_IO_TYPE 0x16 /* Accept target I/O entry. */
+/*
+ * ISP queue - Accept Target I/O (ATIO) entry structure definition.
+ */
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t sys_define_2; /* System defined. */
+ target_id_t target;
+ uint16_t rx_id;
+ uint16_t flags;
+ uint16_t status;
+ uint8_t command_ref;
+ uint8_t task_codes;
+ uint8_t task_flags;
+ uint8_t execution_codes;
+ uint8_t cdb[MAX_CMDSZ];
+ uint32_t data_length;
+ uint16_t lun;
+ uint8_t initiator_port_name[WWN_SIZE]; /* on qla23xx */
+ uint16_t reserved_32[6];
+ uint16_t ox_id;
+} __attribute__((packed)) atio_entry_t;
+#endif
+
+#ifndef CONTINUE_TGT_IO_TYPE
+#define CONTINUE_TGT_IO_TYPE 0x17
+/*
+ * ISP queue - Continue Target I/O (CTIO) entry for status mode 0
+ * structure definition.
+ */
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t handle; /* System defined handle */
+ target_id_t target;
+ uint16_t rx_id;
+ uint16_t flags;
+ uint16_t status;
+ uint16_t timeout; /* 0 = 30 seconds, 0xFFFF = disable */
+ uint16_t dseg_count; /* Data segment count. */
+ uint32_t relative_offset;
+ uint32_t residual;
+ uint16_t reserved_1[3];
+ uint16_t scsi_status;
+ uint32_t transfer_length;
+ uint32_t dseg_0_address[0];
+} __attribute__((packed)) ctio_common_entry_t;
+#define ATIO_PATH_INVALID 0x07
+#define ATIO_CANT_PROV_CAP 0x16
+#define ATIO_CDB_VALID 0x3D
+
+#define ATIO_EXEC_READ BIT_1
+#define ATIO_EXEC_WRITE BIT_0
+#endif
+
+#ifndef CTIO_A64_TYPE
+#define CTIO_A64_TYPE 0x1F
+typedef struct {
+ ctio_common_entry_t common;
+ uint32_t dseg_0_address; /* Data segment 0 address. */
+ uint32_t dseg_0_length; /* Data segment 0 length. */
+ uint32_t dseg_1_address; /* Data segment 1 address. */
+ uint32_t dseg_1_length; /* Data segment 1 length. */
+ uint32_t dseg_2_address; /* Data segment 2 address. */
+ uint32_t dseg_2_length; /* Data segment 2 length. */
+} __attribute__((packed)) ctio_entry_t;
+#define CTIO_SUCCESS 0x01
+#define CTIO_ABORTED 0x02
+#define CTIO_INVALID_RX_ID 0x08
+#define CTIO_TIMEOUT 0x0B
+#define CTIO_LIP_RESET 0x0E
+#define CTIO_TARGET_RESET 0x17
+#define CTIO_PORT_UNAVAILABLE 0x28
+#define CTIO_PORT_LOGGED_OUT 0x29
+#define CTIO_PORT_CONF_CHANGED 0x2A
+#define CTIO_SRR_RECEIVED 0x45
+
+#endif
+
+#ifndef CTIO_RET_TYPE
+#define CTIO_RET_TYPE 0x17 /* CTIO return entry */
+/*
+ * ISP queue - CTIO returned entry structure definition.
+ */
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t handle; /* System defined handle. */
+ target_id_t target;
+ uint16_t rx_id;
+ uint16_t flags;
+ uint16_t status;
+ uint16_t timeout; /* 0 = 30 seconds, 0xFFFF = disable */
+ uint16_t dseg_count; /* Data segment count. */
+ uint32_t relative_offset;
+ uint32_t residual;
+ uint16_t reserved_1[2];
+ uint16_t sense_length;
+ uint16_t scsi_status;
+ uint16_t response_length;
+ uint8_t sense_data[26];
+} __attribute__((packed)) ctio_ret_entry_t;
+#endif
+
+#define ATIO_TYPE7 0x06 /* Accept target I/O entry for 24xx */
+
+typedef struct {
+ uint8_t r_ctl;
+ uint8_t d_id[3];
+ uint8_t cs_ctl;
+ uint8_t s_id[3];
+ uint8_t type;
+ uint8_t f_ctl[3];
+ uint8_t seq_id;
+ uint8_t df_ctl;
+ uint16_t seq_cnt;
+ uint16_t ox_id;
+ uint16_t rx_id;
+ uint32_t parameter;
+} __attribute__((packed)) fcp_hdr_t;
+
+typedef struct {
+ uint8_t d_id[3];
+ uint8_t r_ctl;
+ uint8_t s_id[3];
+ uint8_t cs_ctl;
+ uint8_t f_ctl[3];
+ uint8_t type;
+ uint16_t seq_cnt;
+ uint8_t df_ctl;
+ uint8_t seq_id;
+ uint16_t rx_id;
+ uint16_t ox_id;
+ uint32_t parameter;
+} __attribute__((packed)) fcp_hdr_le_t;
+
+#define F_CTL_EXCH_CONTEXT_RESP BIT_23
+#define F_CTL_SEQ_CONTEXT_RESIP BIT_22
+#define F_CTL_LAST_SEQ BIT_20
+#define F_CTL_END_SEQ BIT_19
+#define F_CTL_SEQ_INITIATIVE BIT_16
+
+#define R_CTL_BASIC_LINK_SERV 0x80
+#define R_CTL_B_ACC 0x4
+#define R_CTL_B_RJT 0x5
+
+typedef struct {
+ uint64_t lun;
+ uint8_t cmnd_ref;
+ uint8_t task_attr:3;
+ uint8_t reserved:5;
+ uint8_t task_mgmt_flags;
+#define FCP_CMND_TASK_MGMT_CLEAR_ACA 6
+#define FCP_CMND_TASK_MGMT_TARGET_RESET 5
+#define FCP_CMND_TASK_MGMT_LU_RESET 4
+#define FCP_CMND_TASK_MGMT_CLEAR_TASK_SET 2
+#define FCP_CMND_TASK_MGMT_ABORT_TASK_SET 1
+ uint8_t wrdata:1;
+ uint8_t rddata:1;
+ uint8_t add_cdb_len:6;
+ uint8_t cdb[16];
+ /*
+ * add_cdb is optional and can absent from atio7_fcp_cmnd_t. Size 4 only to
+ * make sizeof(atio7_fcp_cmnd_t) be as expected by BUILD_BUG_ON() in
+ * qla_tgt_init().
+ */
+ uint8_t add_cdb[4];
+ /* uint32_t data_length; */
+} __attribute__((packed)) atio7_fcp_cmnd_t;
+
+/*
+ * ISP queue - Accept Target I/O (ATIO) type 7 entry for 24xx structure
+ * definition.
+ */
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t fcp_cmnd_len_low;
+ uint8_t fcp_cmnd_len_high:4;
+ uint8_t attr:4;
+ uint32_t exchange_addr;
+#define ATIO_EXCHANGE_ADDRESS_UNKNOWN 0xFFFFFFFF
+ fcp_hdr_t fcp_hdr;
+ atio7_fcp_cmnd_t fcp_cmnd;
+} __attribute__((packed)) atio7_entry_t;
+
+#define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */
+
+/*
+ * ISP queue - Continue Target I/O (ATIO) type 7 entry (for 24xx) structure
+ * definition.
+ */
+
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t handle; /* System defined handle */
+ uint16_t nport_handle;
+#define CTIO7_NHANDLE_UNRECOGNIZED 0xFFFF
+ uint16_t timeout;
+ uint16_t dseg_count; /* Data segment count. */
+ uint8_t vp_index;
+ uint8_t add_flags;
+ uint8_t initiator_id[3];
+ uint8_t reserved;
+ uint32_t exchange_addr;
+} __attribute__((packed)) ctio7_common_entry_t;
+
+typedef struct {
+ ctio7_common_entry_t common;
+ uint16_t reserved1;
+ uint16_t flags;
+ uint32_t residual;
+ uint16_t ox_id;
+ uint16_t scsi_status;
+ uint32_t relative_offset;
+ uint32_t reserved2;
+ uint32_t transfer_length;
+ uint32_t reserved3;
+ uint32_t dseg_0_address[2]; /* Data segment 0 address. */
+ uint32_t dseg_0_length; /* Data segment 0 length. */
+} __attribute__((packed)) ctio7_status0_entry_t;
+
+typedef struct {
+ ctio7_common_entry_t common;
+ uint16_t sense_length;
+ uint16_t flags;
+ uint32_t residual;
+ uint16_t ox_id;
+ uint16_t scsi_status;
+ uint16_t response_len;
+ uint16_t reserved;
+ uint8_t sense_data[24];
+} __attribute__((packed)) ctio7_status1_entry_t;
+
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t handle; /* System defined handle */
+ uint16_t status;
+ uint16_t timeout;
+ uint16_t dseg_count; /* Data segment count. */
+ uint8_t vp_index;
+ uint8_t reserved1[5];
+ uint32_t exchange_address;
+ uint16_t reserved2;
+ uint16_t flags;
+ uint32_t residual;
+ uint16_t ox_id;
+ uint16_t reserved3;
+ uint32_t relative_offset;
+ uint8_t reserved4[24];
+} __attribute__((packed)) ctio7_fw_entry_t;
+
+/* CTIO7 flags values */
+#define CTIO7_FLAGS_SEND_STATUS BIT_15
+#define CTIO7_FLAGS_TERMINATE BIT_14
+#define CTIO7_FLAGS_CONFORM_REQ BIT_13
+#define CTIO7_FLAGS_DONT_RET_CTIO BIT_8
+#define CTIO7_FLAGS_STATUS_MODE_0 0
+#define CTIO7_FLAGS_STATUS_MODE_1 BIT_6
+#define CTIO7_FLAGS_EXPLICIT_CONFORM BIT_5
+#define CTIO7_FLAGS_CONFIRM_SATISF BIT_4
+#define CTIO7_FLAGS_DSD_PTR BIT_2
+#define CTIO7_FLAGS_DATA_IN BIT_1
+#define CTIO7_FLAGS_DATA_OUT BIT_0
+
+/*
+ * ISP queue - immediate notify entry structure definition for 24xx.
+ */
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t reserved;
+ uint16_t nport_handle;
+ uint16_t reserved_2;
+ uint16_t flags;
+#define NOTIFY24XX_FLAGS_GLOBAL_TPRLO BIT_1
+#define NOTIFY24XX_FLAGS_PUREX_IOCB BIT_0
+ uint16_t srr_rx_id;
+ uint16_t status;
+ uint8_t status_subcode;
+ uint8_t reserved_3;
+ uint32_t exchange_address;
+ uint32_t srr_rel_offs;
+ uint16_t srr_ui;
+ uint16_t srr_ox_id;
+ uint8_t reserved_4[19];
+ uint8_t vp_index;
+ uint32_t reserved_5;
+ uint8_t port_id[3];
+ uint8_t reserved_6;
+ uint16_t reserved_7;
+ uint16_t ox_id;
+} __attribute__((packed)) notify24xx_entry_t;
+
+#define ELS_PLOGI 0x3
+#define ELS_FLOGI 0x4
+#define ELS_LOGO 0x5
+#define ELS_PRLI 0x20
+#define ELS_PRLO 0x21
+#define ELS_TPRLO 0x24
+#define ELS_PDISC 0x50
+#define ELS_ADISC 0x52
+
+/*
+ * ISP queue - notify acknowledge entry structure definition for 24xx.
+ */
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t handle;
+ uint16_t nport_handle;
+ uint16_t reserved_1;
+ uint16_t flags;
+ uint16_t srr_rx_id;
+ uint16_t status;
+ uint8_t status_subcode;
+ uint8_t reserved_3;
+ uint32_t exchange_address;
+ uint32_t srr_rel_offs;
+ uint16_t srr_ui;
+ uint16_t srr_flags;
+ uint8_t reserved_4[19];
+ uint8_t vp_index;
+ uint8_t srr_reject_vendor_uniq;
+ uint8_t srr_reject_code_expl;
+ uint8_t srr_reject_code;
+ uint8_t reserved_5[7];
+ uint16_t ox_id;
+} __attribute__((packed)) nack24xx_entry_t;
+
+/*
+ * ISP queue - ABTS received/response entries structure definition for 24xx.
+ */
+#define ABTS_RECV_24XX 0x54 /* ABTS received (for 24xx) */
+#define ABTS_RESP_24XX 0x55 /* ABTS responce (for 24xx) */
+
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint8_t reserved_1[6];
+ uint16_t nport_handle;
+ uint8_t reserved_2[2];
+ uint8_t vp_index;
+ uint8_t reserved_3:4;
+ uint8_t sof_type:4;
+ uint32_t exchange_address;
+ fcp_hdr_le_t fcp_hdr_le;
+ uint8_t reserved_4[16];
+ uint32_t exchange_addr_to_abort;
+} __attribute__((packed)) abts24_recv_entry_t;
+
+#define ABTS_PARAM_ABORT_SEQ BIT_0
+
+typedef struct {
+ uint16_t reserved;
+ uint8_t seq_id_last;
+ uint8_t seq_id_valid;
+#define SEQ_ID_VALID 0x80
+#define SEQ_ID_INVALID 0x00
+ uint16_t rx_id;
+ uint16_t ox_id;
+ uint16_t high_seq_cnt;
+ uint16_t low_seq_cnt;
+} __attribute__((packed)) ba_acc_le_t;
+
+typedef struct {
+ uint8_t vendor_uniq;
+ uint8_t reason_expl;
+ uint8_t reason_code;
+#define BA_RJT_REASON_CODE_INVALID_COMMAND 0x1
+#define BA_RJT_REASON_CODE_UNABLE_TO_PERFORM 0x9
+ uint8_t reserved;
+} __attribute__((packed)) ba_rjt_le_t;
+
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t handle;
+ uint16_t reserved_1;
+ uint16_t nport_handle;
+ uint16_t control_flags;
+#define ABTS_CONTR_FLG_TERM_EXCHG BIT_0
+ uint8_t vp_index;
+ uint8_t reserved_3:4;
+ uint8_t sof_type:4;
+ uint32_t exchange_address;
+ fcp_hdr_le_t fcp_hdr_le;
+ union {
+ ba_acc_le_t ba_acct;
+ ba_rjt_le_t ba_rjt;
+ } __attribute__((packed)) payload;
+ uint32_t reserved_4;
+ uint32_t exchange_addr_to_abort;
+} __attribute__((packed)) abts24_resp_entry_t;
+
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t handle;
+ uint16_t compl_status;
+#define ABTS_RESP_COMPL_SUCCESS 0
+#define ABTS_RESP_COMPL_SUBCODE_ERROR 0x31
+ uint16_t nport_handle;
+ uint16_t reserved_1;
+ uint8_t reserved_2;
+ uint8_t reserved_3:4;
+ uint8_t sof_type:4;
+ uint32_t exchange_address;
+ fcp_hdr_le_t fcp_hdr_le;
+ uint8_t reserved_4[8];
+ uint32_t error_subcode1;
+#define ABTS_RESP_SUBCODE_ERR_ABORTED_EXCH_NOT_TERM 0x1E
+ uint32_t error_subcode2;
+ uint32_t exchange_addr_to_abort;
+} __attribute__((packed)) abts24_resp_fw_entry_t;
+
+/********************************************************************\
+ * Type Definitions used by initiator & target halves
+\********************************************************************/
+
+struct qla_tgt_mgmt_cmd;
+struct qla_tgt_sess;
+
+struct qla_target_template {
+
+ int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *, uint32_t,
+ uint32_t, int, int, int);
+ int (*handle_data)(struct qla_tgt_cmd *);
+ int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t);
+ void (*free_cmd)(struct qla_tgt_cmd *);
+ void (*free_session)(struct qla_tgt_sess *);
+
+ int (*check_initiator_node_acl)(struct scsi_qla_host *, unsigned char *,
+ void *, uint8_t *, uint16_t);
+ struct qla_tgt_sess *(*find_sess_by_loop_id)(struct scsi_qla_host *,
+ const uint16_t);
+ struct qla_tgt_sess *(*find_sess_by_s_id)(struct scsi_qla_host *,
+ const uint8_t *);
+};
+
+int qla2x00_wait_for_hba_online(struct scsi_qla_host *);
+
+#include <target/target_core_base.h>
+
+#define QLA_TGT_TIMEOUT 10 /* in seconds */
+
+#define QLA_TGT_MAX_HW_PENDING_TIME 60 /* in seconds */
+
+/* Immediate notify status constants */
+#define IMM_NTFY_LIP_RESET 0x000E
+#define IMM_NTFY_LIP_LINK_REINIT 0x000F
+#define IMM_NTFY_IOCB_OVERFLOW 0x0016
+#define IMM_NTFY_ABORT_TASK 0x0020
+#define IMM_NTFY_PORT_LOGOUT 0x0029
+#define IMM_NTFY_PORT_CONFIG 0x002A
+#define IMM_NTFY_GLBL_TPRLO 0x002D
+#define IMM_NTFY_GLBL_LOGO 0x002E
+#define IMM_NTFY_RESOURCE 0x0034
+#define IMM_NTFY_MSG_RX 0x0036
+#define IMM_NTFY_SRR 0x0045
+#define IMM_NTFY_ELS 0x0046
+
+/* Immediate notify task flags */
+#define IMM_NTFY_TASK_MGMT_SHIFT 8
+
+#define QLA_TGT_CLEAR_ACA 0x40
+#define QLA_TGT_TARGET_RESET 0x20
+#define QLA_TGT_LUN_RESET 0x10
+#define QLA_TGT_CLEAR_TS 0x04
+#define QLA_TGT_ABORT_TS 0x02
+#define QLA_TGT_ABORT_ALL_SESS 0xFFFF
+#define QLA_TGT_ABORT_ALL 0xFFFE
+#define QLA_TGT_NEXUS_LOSS_SESS 0xFFFD
+#define QLA_TGT_NEXUS_LOSS 0xFFFC
+
+/* Notify Acknowledge flags */
+#define NOTIFY_ACK_RES_COUNT BIT_8
+#define NOTIFY_ACK_CLEAR_LIP_RESET BIT_5
+#define NOTIFY_ACK_TM_RESP_CODE_VALID BIT_4
+
+/* Command's states */
+#define QLA_TGT_STATE_NEW 0 /* New command and target processing it */
+#define QLA_TGT_STATE_NEED_DATA 1 /* target needs data to continue */
+#define QLA_TGT_STATE_DATA_IN 2 /* Data arrived and target is processing */
+#define QLA_TGT_STATE_PROCESSED 3 /* target done processing */
+#define QLA_TGT_STATE_ABORTED 4 /* Command aborted */
+
+/* Special handles */
+#define QLA_TGT_NULL_HANDLE 0
+#define QLA_TGT_SKIP_HANDLE (0xFFFFFFFF & ~CTIO_COMPLETION_HANDLE_MARK)
+
+/* ATIO task_codes field */
+#define ATIO_SIMPLE_QUEUE 0
+#define ATIO_HEAD_OF_QUEUE 1
+#define ATIO_ORDERED_QUEUE 2
+#define ATIO_ACA_QUEUE 4
+#define ATIO_UNTAGGED 5
+
+/* TM failed response codes, see FCP (9.4.11 FCP_RSP_INFO) */
+#define FC_TM_SUCCESS 0
+#define FC_TM_BAD_FCP_DATA 1
+#define FC_TM_BAD_CMD 2
+#define FC_TM_FCP_DATA_MISMATCH 3
+#define FC_TM_REJECT 4
+#define FC_TM_FAILED 5
+
+/*
+ * Error code of qla_tgt_pre_xmit_response() meaning that cmd's exchange was
+ * terminated, so no more actions is needed and success should be returned
+ * to target.
+ */
+#define QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED 0x1717
+
+#if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G)
+#define pci_dma_lo32(a) (a & 0xffffffff)
+#define pci_dma_hi32(a) ((((a) >> 16)>>16) & 0xffffffff)
+#else
+#define pci_dma_lo32(a) (a & 0xffffffff)
+#define pci_dma_hi32(a) 0
+#endif
+
+#define QLA_TGT_SENSE_VALID(sense) ((sense != NULL) && \
+ (((const uint8_t *)(sense))[0] & 0x70) == 0x70)
+
+struct qla_port23_data {
+ uint8_t port_name[WWN_SIZE];
+ uint16_t loop_id;
+};
+
+struct qla_port24_data {
+ uint8_t port_name[WWN_SIZE];
+ uint16_t loop_id;
+ uint16_t reserved;
+};
+
+struct qla_tgt {
+ struct scsi_qla_host *vha;
+ struct qla_hw_data *ha;
+
+ /*
+ * To sync between IRQ handlers and qla_tgt_target_release(). Needed,
+ * because req_pkt() can drop/reaquire HW lock inside. Protected by
+ * HW lock.
+ */
+ int irq_cmd_count;
+
+ int datasegs_per_cmd, datasegs_per_cont;
+
+ /* Target's flags, serialized by pha->hardware_lock */
+ unsigned int tgt_enable_64bit_addr:1; /* 64-bits PCI addressing enabled */
+ unsigned int link_reinit_iocb_pending:1;
+ unsigned int tm_to_unknown:1; /* TM to unknown session was sent */
+ unsigned int sess_works_pending:1; /* there are sess_work entries */
+
+ /*
+ * Protected by tgt_mutex AND hardware_lock for writing and tgt_mutex
+ * OR hardware_lock for reading.
+ */
+ int tgt_stop; /* the target mode driver is being stopped */
+ int tgt_stopped; /* the target mode driver has been stopped */
+
+ /* Count of sessions refering qla_tgt. Protected by hardware_lock. */
+ int sess_count;
+
+ /* Protected by hardware_lock. Addition also protected by tgt_mutex. */
+ struct list_head sess_list;
+
+ /* Protected by hardware_lock */
+ struct list_head del_sess_list;
+ struct delayed_work sess_del_work;
+
+ spinlock_t sess_work_lock;
+ struct list_head sess_works_list;
+ struct work_struct sess_work;
+
+ notify24xx_entry_t link_reinit_iocb;
+ wait_queue_head_t waitQ;
+ int notify_ack_expected;
+ int abts_resp_expected;
+ int modify_lun_expected;
+
+ int ctio_srr_id;
+ int imm_srr_id;
+ spinlock_t srr_lock;
+ struct list_head srr_ctio_list;
+ struct list_head srr_imm_list;
+ struct work_struct srr_work;
+
+ atomic_t tgt_global_resets_count;
+
+ struct list_head tgt_list_entry;
+};
+
+/*
+ * Equivilant to IT Nexus (Initiator-Target)
+ */
+struct qla_tgt_sess {
+ uint16_t loop_id;
+ port_id_t s_id;
+
+ unsigned int conf_compl_supported:1;
+ unsigned int deleted:1;
+ unsigned int local:1;
+
+ struct se_session *se_sess;
+ struct scsi_qla_host *vha;
+ struct qla_tgt *tgt;
+
+ int sess_ref; /* protected by hardware_lock */
+
+ struct list_head sess_list_entry;
+ unsigned long expires;
+ struct list_head del_list_entry;
+
+ uint8_t port_name[WWN_SIZE];
+};
+
+struct qla_tgt_cmd {
+ struct qla_tgt_sess *sess;
+ int state;
+ int locked_rsp;
+ atomic_t cmd_done;
+ atomic_t cmd_stop_free;
+ struct se_cmd se_cmd;
+ /* Sense buffer that will be mapped into outgoing status */
+ unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER];
+
+ unsigned int conf_compl_supported:1;/* to save extra sess dereferences */
+ unsigned int sg_mapped:1;
+ unsigned int free_sg:1;
+ unsigned int aborted:1; /* Needed in case of SRR */
+ unsigned int write_data_transferred:1;
+
+ struct scatterlist *sg; /* cmd data buffer SG vector */
+ int sg_cnt; /* SG segments count */
+ int bufflen; /* cmd buffer length */
+ int offset;
+ uint32_t tag;
+ dma_addr_t dma_handle;
+ enum dma_data_direction dma_data_direction;
+
+ uint16_t loop_id; /* to save extra sess dereferences */
+ struct qla_tgt *tgt; /* to save extra sess dereferences */
+ struct scsi_qla_host *vha;
+
+ union {
+ atio7_entry_t atio7;
+ atio_entry_t atio2x;
+ } __attribute__((packed)) atio;
+};
+
+struct qla_tgt_sess_work_param {
+ struct list_head sess_works_list_entry;
+
+#define QLA_TGT_SESS_WORK_CMD 0
+#define QLA_TGT_SESS_WORK_ABORT 1
+#define QLA_TGT_SESS_WORK_TM 2
+ int type;
+
+ union {
+ struct qla_tgt_cmd *cmd;
+ abts24_recv_entry_t abts;
+ notify_entry_t tm_iocb;
+ atio7_entry_t tm_iocb2;
+ };
+};
+
+struct qla_tgt_mgmt_cmd {
+ uint8_t tmr_func;
+ uint8_t fc_tm_rsp;
+ struct qla_tgt_sess *sess;
+ struct se_cmd se_cmd;
+ struct se_tmr_req *se_tmr_req;
+ unsigned int flags;
+#define Q24_MGMT_SEND_NACK 1
+ union {
+ atio7_entry_t atio7;
+ notify_entry_t notify_entry;
+ notify24xx_entry_t notify_entry24;
+ abts24_recv_entry_t abts;
+ } __attribute__((packed)) orig_iocb;
+};
+
+struct qla_tgt_prm {
+ struct qla_tgt_cmd *cmd;
+ struct qla_tgt *tgt;
+ void *pkt;
+ struct scatterlist *sg; /* cmd data buffer SG vector */
+ int seg_cnt;
+ int req_cnt;
+ uint16_t rq_result;
+ uint16_t scsi_status;
+ unsigned char *sense_buffer;
+ int sense_buffer_len;
+ int residual;
+ int add_status_pkt;
+};
+
+struct srr_imm {
+ struct list_head srr_list_entry;
+ int srr_id;
+ union {
+ notify_entry_t notify_entry;
+ notify24xx_entry_t notify_entry24;
+ } __attribute__((packed)) imm;
+};
+
+struct srr_ctio {
+ struct list_head srr_list_entry;
+ int srr_id;
+ struct qla_tgt_cmd *cmd;
+};
+
+#define QLA_TGT_XMIT_DATA 1
+#define QLA_TGT_XMIT_STATUS 2
+#define QLA_TGT_XMIT_ALL (QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA)
+
+#include <linux/version.h>
+
+extern struct qla_tgt_data qla_target;
+/*
+ * Internal function prototypes
+ */
+void qla_tgt_disable_vha(struct scsi_qla_host *);
+
+/*
+ * Function prototypes for qla_target.c logic used by qla2xxx LLD code.
+ */
+extern int qla_tgt_add_target(struct qla_hw_data *, struct scsi_qla_host *);
+extern int qla_tgt_remove_target(struct qla_hw_data *, struct scsi_qla_host *);
+extern void qla_tgt_fc_port_added(struct scsi_qla_host *, fc_port_t *);
+extern void qla_tgt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *);
+extern void qla_tgt_set_mode(struct scsi_qla_host *ha);
+extern void qla_tgt_clear_mode(struct scsi_qla_host *ha);
+extern int __init qla_tgt_init(void);
+extern void __exit qla_tgt_exit(void);
+
+static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha)
+{
+ return ha->host->active_mode & MODE_TARGET;
+}
+
+static inline bool qla_ini_mode_enabled(struct scsi_qla_host *ha)
+{
+ return ha->host->active_mode & MODE_INITIATOR;
+}
+
+static inline void qla_reverse_ini_mode(struct scsi_qla_host *ha)
+{
+ if (ha->host->active_mode & MODE_INITIATOR)
+ ha->host->active_mode &= ~MODE_INITIATOR;
+ else
+ ha->host->active_mode |= MODE_INITIATOR;
+}
+
+/********************************************************************\
+ * ISP Queue types left out of new QLogic driver (from old version)
+\********************************************************************/
+
+/*
+ * qla2x00_do_en_dis_lun
+ * Issue enable or disable LUN entry IOCB.
+ *
+ * Input:
+ * ha = adapter block pointer.
+ *
+ * Caller MUST have hardware lock held. This function might release it,
+ * then reaquire.
+ */
+static inline void
+__qla2x00_send_enable_lun(struct scsi_qla_host *vha, int enable)
+{
+ elun_entry_t *pkt;
+ struct qla_hw_data *ha = vha->hw;
+
+ BUG_ON(IS_FWI2_CAPABLE(ha));
+
+ pkt = (elun_entry_t *)qla2x00_alloc_iocbs(vha, 0);
+ if (pkt != NULL) {
+ pkt->entry_type = ENABLE_LUN_TYPE;
+ if (enable) {
+ pkt->command_count = QLA2X00_COMMAND_COUNT_INIT;
+ pkt->immed_notify_count = QLA2X00_IMMED_NOTIFY_COUNT_INIT;
+ pkt->timeout = 0xffff;
+ } else {
+ pkt->command_count = 0;
+ pkt->immed_notify_count = 0;
+ pkt->timeout = 0;
+ }
+ DEBUG2(printk(KERN_DEBUG
+ "scsi%lu:ENABLE_LUN IOCB imm %u cmd %u timeout %u\n",
+ vha->host_no, pkt->immed_notify_count,
+ pkt->command_count, pkt->timeout));
+
+ /* Issue command to ISP */
+ qla2x00_isp_cmd(vha, vha->req);
+
+ } else
+ qla_tgt_clear_mode(vha);
+#if defined(QL_DEBUG_LEVEL_2) || defined(QL_DEBUG_LEVEL_3)
+ if (!pkt)
+ printk(KERN_ERR "%s: **** FAILED ****\n", __func__);
+#endif
+
+ return;
+}
+
+/*
+ * qla2x00_send_enable_lun
+ * Issue enable LUN entry IOCB.
+ *
+ * Input:
+ * ha = adapter block pointer.
+ * enable = enable/disable flag.
+ */
+static inline void
+qla2x00_send_enable_lun(struct scsi_qla_host *vha, bool enable)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ if (!IS_FWI2_CAPABLE(ha)) {
+ unsigned long flags;
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ __qla2x00_send_enable_lun(vha, enable);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ }
+}
+/*
+ * Exported symbols from qla_target.c LLD logic used by tcm_qla2xxx code..
+ */
+extern void qla24xx_atio_pkt_all_vps(struct scsi_qla_host *, atio7_entry_t *);
+extern void qla_tgt_response_pkt_all_vps(struct scsi_qla_host *, response_t *);
+extern int qla_tgt_rdy_to_xfer(struct qla_tgt_cmd *);
+extern int qla2xxx_xmit_response(struct qla_tgt_cmd *, int, uint8_t);
+extern void qla_tgt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *);
+extern void qla_tgt_free_mcmd(struct qla_tgt_mgmt_cmd *);
+extern void qla_tgt_free_cmd(struct qla_tgt_cmd *cmd);
+extern void qla_tgt_sess_put(struct qla_tgt_sess *);
+extern void qla_tgt_ctio_completion(struct scsi_qla_host *, uint32_t);
+extern void qla_tgt_async_event(uint16_t, struct scsi_qla_host *, uint16_t *);
+extern void qla_tgt_enable_vha(struct scsi_qla_host *);
+extern void qla_tgt_vport_create(struct scsi_qla_host *, struct qla_hw_data *);
+extern void qla_tgt_rff_id(struct scsi_qla_host *, struct ct_sns_req *);
+extern void qla_tgt_initialize_adapter(struct scsi_qla_host *, struct qla_hw_data *);
+extern void qla_tgt_init_atio_q_entries(struct scsi_qla_host *);
+extern void qla_tgt_24xx_process_atio_queue(struct scsi_qla_host *);
+extern void qla_tgt_24xx_config_rings(struct scsi_qla_host *, device_reg_t __iomem *);
+extern void qla_tgt_2x00_config_nvram_stage1(struct scsi_qla_host *, nvram_t *);
+extern void qla_tgt_2x00_config_nvram_stage2(struct scsi_qla_host *, init_cb_t *);
+extern void qla_tgt_24xx_config_nvram_stage1(struct scsi_qla_host *, struct nvram_24xx *);
+extern void qla_tgt_24xx_config_nvram_stage2(struct scsi_qla_host *, struct init_cb_24xx *);
+extern void qla_tgt_abort_isp(struct scsi_qla_host *);
+extern int qla_tgt_2x00_process_response_error(struct scsi_qla_host *, sts_entry_t *);
+extern int qla_tgt_24xx_process_response_error(struct scsi_qla_host *, struct sts_entry_24xx *);
+extern void qla_tgt_modify_vp_config(struct scsi_qla_host *, struct vp_config_entry_24xx *);
+extern void qla_tgt_probe_one_stage1(struct scsi_qla_host *, struct qla_hw_data *);
+extern int qla_tgt_mem_alloc(struct qla_hw_data *);
+extern void qla_tgt_mem_free(struct qla_hw_data *);
+extern void qla_tgt_stop_phase1(struct qla_tgt *);
+extern void qla_tgt_stop_phase2(struct qla_tgt *);
+
+#endif /* __QLA_TARGET_H */
--
1.7.4.3

2011-04-05 05:12:30

by Nicholas A. Bellinger

Subject: [RFC-v3 2/3] qla2xxx: Enable 2xxx series LLD target mode support

From: Nicholas Bellinger <[email protected]>

This patch enables target mode support with the qla2xxx SCSI LLD using
qla_target.c logic introduced in commit f86d9fc734. This includes:

*) Addition of target mode specific members to existing data
structures in qla_def.h and struct qla_hw_data->qla2x_tmpl using
qla_target.h:struct qla_target_template.

*) Addition of struct qla_target_template and direct calls into
qla_target.c logic w/ qla_tgt_* prefixed functions.

*) Addition of qla_iocb:qla2x00_req_pkt() for ring processing, and
qla2x00_issue_marker() for handling request/response queue processing
for target mode operation

*) Addition of various qla_tgt_mode_enabled() logic checks in
qla24xx_nvram_config(), qla2x00_initialize_adapter(), qla2x00_rff_id(),
qla2x00_abort_isp(), qla24xx_modify_vp_config(), and qla2x00_vp_abort_isp().

For the specific checks for qla_hw_data->qla2x_tmpl this includes:

*) control plane:

qla_init.c:qla2x00_rport_del() -> qla_tgt_fc_port_deleted()
qla_init.c:qla2x00_reg_remote_port() -> qla_tgt_fc_port_added()
qla_init.c:qla2x00_device_resync() -> qla2x00_mark_device_lost()

*) I/O path:

qla_isr.c:qla2x00_async_event() -> qla_tgt_async_event()
qla_isr.c:qla2x00_process_response_queue() -> qla_tgt_response_pkt_all_vps()
qla_isr.c:qla24xx_process_response_queue() -> qla_tgt_response_pkt_all_vps()

Signed-off-by: Nicholas A. Bellinger <[email protected]>
---
drivers/scsi/qla2xxx/Makefile | 4 +-
drivers/scsi/qla2xxx/qla_attr.c | 5 +-
drivers/scsi/qla2xxx/qla_dbg.h | 34 +++++++++++
drivers/scsi/qla2xxx/qla_def.h | 63 +++++++++++++++++++-
drivers/scsi/qla2xxx/qla_gbl.h | 7 ++
drivers/scsi/qla2xxx/qla_gs.c | 4 +-
drivers/scsi/qla2xxx/qla_init.c | 79 ++++++++++++++++++++++---
drivers/scsi/qla2xxx/qla_iocb.c | 105 ++++++++++++++++++++++++++++++++-
drivers/scsi/qla2xxx/qla_isr.c | 83 ++++++++++++++++++++++++++-
drivers/scsi/qla2xxx/qla_mbx.c | 122 +++++++++++++++++++++++++++++++++++++--
drivers/scsi/qla2xxx/qla_mid.c | 21 ++++++-
drivers/scsi/qla2xxx/qla_os.c | 107 +++++++++++++++++++++++++++++-----
12 files changed, 595 insertions(+), 39 deletions(-)

diff --git a/drivers/scsi/qla2xxx/Makefile b/drivers/scsi/qla2xxx/Makefile
index 5df782f..4861054 100644
--- a/drivers/scsi/qla2xxx/Makefile
+++ b/drivers/scsi/qla2xxx/Makefile
@@ -1,5 +1,7 @@
qla2xxx-y := qla_os.o qla_init.o qla_mbx.o qla_iocb.o qla_isr.o qla_gs.o \
qla_dbg.o qla_sup.o qla_attr.o qla_mid.o qla_dfs.o qla_bsg.o \
- qla_nx.o
+ qla_nx.o qla_target.o

obj-$(CONFIG_SCSI_QLA_FC) += qla2xxx.o
+
+EXTRA_CFLAGS := -Idrivers/scsi/qla2xxx/ -Idrivers/target/ -Idrivers/target/tcm_qla2xxx/
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index d3e58d7..5318478 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -5,6 +5,7 @@
* See LICENSE.qla2xxx for copyright and licensing details.
*/
#include "qla_def.h"
+#include "qla_target.h"

#include <linux/kthread.h>
#include <linux/vmalloc.h>
@@ -1816,6 +1817,7 @@ qla24xx_vport_create(struct fc_vport *fc_vport, bool disable)
fc_host_supported_speeds(vha->host) =
fc_host_supported_speeds(base_vha->host);

+ qla_tgt_vport_create(vha, ha);
qla24xx_vport_disable(fc_vport, disable);

if (ha->flags.cpu_affinity_enabled) {
@@ -2020,7 +2022,8 @@ qla2x00_init_host_attr(scsi_qla_host_t *vha)
fc_host_dev_loss_tmo(vha->host) = ha->port_down_retry_count;
fc_host_node_name(vha->host) = wwn_to_u64(vha->node_name);
fc_host_port_name(vha->host) = wwn_to_u64(vha->port_name);
- fc_host_supported_classes(vha->host) = FC_COS_CLASS3;
+ fc_host_supported_classes(vha->host) = ha->enable_class_2 ?
+ (FC_COS_CLASS2|FC_COS_CLASS3) : FC_COS_CLASS3;
fc_host_max_npiv_vports(vha->host) = ha->max_npiv_vports;
fc_host_npiv_vports_inuse(vha->host) = ha->cur_vport_count;

diff --git a/drivers/scsi/qla2xxx/qla_dbg.h b/drivers/scsi/qla2xxx/qla_dbg.h
index b74e6b5..b5b2f95 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.h
+++ b/drivers/scsi/qla2xxx/qla_dbg.h
@@ -28,6 +28,11 @@
/* #define QL_DEBUG_LEVEL_16 */ /* Output ISP84XX trace msgs */
/* #define QL_DEBUG_LEVEL_17 */ /* Output EEH trace messages */
/* #define QL_DEBUG_LEVEL_18 */ /* Output T10 CRC trace messages */
+/* #define QL_DEBUG_LEVEL_21 */ /* Output for target */
+/* #define QL_DEBUG_LEVEL_22 */ /* Output for target management */
+/* #define QL_DEBUG_LEVEL_23 */ /* Output for target scsi packets */
+/* #define QL_DEBUG_LEVEL_24 */ /* Output for target SG lists */
+/* #define QL_DEBUG_LEVEL_25 */ /* Output for target task management */

/*
* Macros use for debugging the driver.
@@ -146,6 +151,35 @@
#define DEBUG18(x) do {} while (0)
#endif

+#if defined(QL_DEBUG_LEVEL_21)
+#define DEBUG21(x) do {x;} while (0)
+#else
+#define DEBUG21(x) do {} while (0)
+#endif
+
+#if defined(QL_DEBUG_LEVEL_22)
+#define DEBUG22(x) do {x;} while (0)
+#else
+#define DEBUG22(x) do {} while (0)
+#endif
+
+#if defined(QL_DEBUG_LEVEL_23)
+#define DEBUG23(x) do {x;} while (0)
+#else
+#define DEBUG23(x) do {} while (0)
+#endif
+
+#if defined(QL_DEBUG_LEVEL_24)
+#define DEBUG24(x) do {x;} while (0)
+#else
+#define DEBUG24(x) do {} while (0)
+#endif
+
+#if defined(QL_DEBUG_LEVEL_25)
+#define DEBUG25(x) do {x;} while (0)
+#else
+#define DEBUG25(x) do {} while (0)
+#endif

/*
* Firmware Dump structure definition
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 6c51c0a..465ea41 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -185,6 +185,7 @@
#define RESPONSE_ENTRY_CNT_2100 64 /* Number of response entries.*/
#define RESPONSE_ENTRY_CNT_2300 512 /* Number of response entries.*/
#define RESPONSE_ENTRY_CNT_MQ 128 /* Number of response entries.*/
+#define ATIO_ENTRY_CNT_24XX 4096 /* Number of ATIO entries. */

struct req_que;

@@ -546,7 +547,7 @@ typedef struct {
#define MBA_SYSTEM_ERR 0x8002 /* System Error. */
#define MBA_REQ_TRANSFER_ERR 0x8003 /* Request Transfer Error. */
#define MBA_RSP_TRANSFER_ERR 0x8004 /* Response Transfer Error. */
-#define MBA_WAKEUP_THRES 0x8005 /* Request Queue Wake-up. */
+#define MBA_WAKEUP_THRES 0x8005 /* Request Queue Wake-up. */
#define MBA_LIP_OCCURRED 0x8010 /* Loop Initialization Procedure */
/* occurred. */
#define MBA_LOOP_UP 0x8011 /* FC Loop UP. */
@@ -1220,11 +1221,27 @@ typedef struct {
* ISP queue - response queue entry definition.
*/
typedef struct {
- uint8_t data[60];
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t sys_define; /* System defined. */
+ uint8_t entry_status; /* Entry Status. */
+ uint32_t handle; /* System defined handle */
+ uint8_t data[52];
uint32_t signature;
#define RESPONSE_PROCESSED 0xDEADDEAD /* Signature */
} response_t;

+/*
+ * ISP queue - ATIO queue entry definition.
+ */
+typedef struct {
+ uint8_t entry_type; /* Entry type. */
+ uint8_t entry_count; /* Entry count. */
+ uint8_t data[58];
+ uint32_t signature;
+#define ATIO_PROCESSED 0xDEADDEAD /* Signature */
+} atio_t;
+
typedef union {
uint16_t extended;
struct {
@@ -1707,6 +1724,9 @@ typedef struct fc_port {

uint16_t vp_idx;
uint8_t fc4_type;
+
+ /* True, if confirmed completion is supported */
+ uint8_t conf_compl_supported:1;
} fc_port_t;

/*
@@ -2812,6 +2832,39 @@ struct qla_hw_data {

uint8_t fw_type;
__le32 file_prd_off; /* File firmware product offset */
+
+ /* Protected by hw lock */
+ uint32_t enable_class_2:1;
+ uint32_t enable_explicit_conf:1;
+ uint32_t host_shutting_down:1;
+ uint32_t ini_mode_force_reverse:1;
+ uint32_t node_name_set:1;
+
+ dma_addr_t atio_dma; /* Physical address. */
+ atio_t *atio_ring; /* Base virtual address */
+ atio_t *atio_ring_ptr; /* Current address. */
+ uint16_t atio_ring_index; /* Current index. */
+ uint16_t atio_q_length;
+
+ void *target_lport_ptr;
+ struct qla_target_template *qla2x_tmpl;
+ struct qla_tgt *qla_tgt;
+ struct qla_tgt_cmd *cmds[MAX_OUTSTANDING_COMMANDS];
+ uint16_t current_handle;
+
+ struct qla_tgt_vp_map *tgt_vp_map;
+ struct mutex tgt_mutex;
+ struct mutex tgt_host_action_mutex;
+
+ int saved_set;
+ uint16_t saved_exchange_count;
+ uint32_t saved_firmware_options_1;
+ uint32_t saved_firmware_options_2;
+ uint32_t saved_firmware_options_3;
+ uint8_t saved_firmware_options[2];
+ uint8_t saved_add_firmware_options[2];
+
+ uint8_t tgt_node_name[WWN_SIZE];
};

/*
@@ -2938,6 +2991,11 @@ typedef struct scsi_qla_host {
atomic_t vref_count;
} scsi_qla_host_t;

+struct qla_tgt_vp_map {
+ uint8_t idx;
+ scsi_qla_host_t *vha;
+};
+
/*
* Macros to help code, maintain, etc.
*/
@@ -2961,7 +3019,6 @@ typedef struct scsi_qla_host {
atomic_dec(&__vha->vref_count); \
} while (0)

-
#define qla_printk(level, ha, format, arg...) \
dev_printk(level , &((ha)->pdev->dev) , format , ## arg)

diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index d48326e..6c0a9e8 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -172,6 +172,7 @@ extern int qla2x00_vp_abort_isp(scsi_qla_host_t *);
/*
* Global Function Prototypes in qla_iocb.c source file.
*/
+
extern uint16_t qla2x00_calc_iocbs_32(uint16_t);
extern uint16_t qla2x00_calc_iocbs_64(uint16_t);
extern void qla2x00_build_scsi_iocbs_32(srb_t *, cmd_entry_t *, uint16_t);
@@ -185,6 +186,9 @@ extern uint16_t qla24xx_calc_iocbs(uint16_t);
extern void qla24xx_build_scsi_iocbs(srb_t *, struct cmd_type_7 *, uint16_t);
extern int qla24xx_dif_start_scsi(srb_t *);

+extern void *qla2x00_alloc_iocbs(scsi_qla_host_t *, srb_t *);
+extern void qla2x00_isp_cmd(struct scsi_qla_host *, struct req_que *);
+extern int qla2x00_issue_marker(scsi_qla_host_t *, int);

/*
* Global Function Prototypes in qla_mbx.c source file.
@@ -237,6 +241,9 @@ extern int
qla2x00_init_firmware(scsi_qla_host_t *, uint16_t);

extern int
+qla2x00_get_node_name_list(scsi_qla_host_t *, void **, int *);
+
+extern int
qla2x00_get_port_database(scsi_qla_host_t *, fc_port_t *, uint8_t);

extern int
diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c
index 74a91b6..e5f33ad 100644
--- a/drivers/scsi/qla2xxx/qla_gs.c
+++ b/drivers/scsi/qla2xxx/qla_gs.c
@@ -5,6 +5,7 @@
* See LICENSE.qla2xxx for copyright and licensing details.
*/
#include "qla_def.h"
+#include "qla_target.h"

static int qla2x00_sns_ga_nxt(scsi_qla_host_t *, fc_port_t *);
static int qla2x00_sns_gid_pt(scsi_qla_host_t *, sw_info_t *);
@@ -548,7 +549,8 @@ qla2x00_rff_id(scsi_qla_host_t *vha)
ct_req->req.rff_id.port_id[1] = vha->d_id.b.area;
ct_req->req.rff_id.port_id[2] = vha->d_id.b.al_pa;

- ct_req->req.rff_id.fc4_feature = BIT_1;
+ qla_tgt_rff_id(vha, ct_req);
+
ct_req->req.rff_id.fc4_type = 0x08; /* SCSI - FCP */

/* Execute MS IOCB */
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 8575808..129a487 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -17,6 +17,10 @@
#include <asm/prom.h>
#endif

+#include <target/target_core_base.h>
+#include <target/target_core_transport.h>
+#include "qla_target.h"
+
/*
* QLogic ISP2x00 Hardware Support Function Prototypes.
*/
@@ -580,6 +584,9 @@ qla2x00_initialize_adapter(scsi_qla_host_t *vha)
if (IS_QLA24XX_TYPE(ha) || IS_QLA25XX(ha))
qla24xx_read_fcp_prio_cfg(vha);

+ if (rval == QLA_SUCCESS)
+ qla_tgt_initialize_adapter(vha, ha);
+
return (rval);
}

@@ -1733,6 +1740,12 @@ qla24xx_config_rings(struct scsi_qla_host *vha)
icb->response_q_address[0] = cpu_to_le32(LSD(rsp->dma));
icb->response_q_address[1] = cpu_to_le32(MSD(rsp->dma));

+ /* Setup ATIO queue dma pointers for target mode */
+ icb->atio_q_inpointer = __constant_cpu_to_le16(0);
+ icb->atio_q_length = cpu_to_le16(ha->atio_q_length);
+ icb->atio_q_address[0] = cpu_to_le32(LSD(ha->atio_dma));
+ icb->atio_q_address[1] = cpu_to_le32(MSD(ha->atio_dma));
+
if (ha->mqenable) {
icb->qos = __constant_cpu_to_le16(QLA_DEFAULT_QUE_QOS);
icb->rid = __constant_cpu_to_le16(rid);
@@ -1774,6 +1787,8 @@ qla24xx_config_rings(struct scsi_qla_host *vha)
WRT_REG_DWORD(&reg->isp24.rsp_q_in, 0);
WRT_REG_DWORD(&reg->isp24.rsp_q_out, 0);
}
+ qla_tgt_24xx_config_rings(vha, reg);
+
/* PCI posting */
RD_REG_DWORD(&ioreg->hccr);
}
@@ -1835,6 +1850,11 @@ qla2x00_init_rings(scsi_qla_host_t *vha)

spin_unlock(&ha->vport_slock);

+ ha->atio_ring_ptr = ha->atio_ring;
+ ha->atio_ring_index = 0;
+ /* Initialize ATIO queue entries */
+ qla_tgt_init_atio_q_entries(vha);
+
ha->isp_ops->config_rings(vha);

spin_unlock_irqrestore(&ha->hardware_lock, flags);
@@ -2097,6 +2117,8 @@ qla2x00_configure_hba(scsi_qla_host_t *vha)
vha->d_id.b.area = area;
vha->d_id.b.al_pa = al_pa;

+ ha->tgt_vp_map[al_pa].idx = vha->vp_idx;
+
if (!vha->flags.init_done)
qla_printk(KERN_INFO, ha,
"Topology - %s, Host Loop address 0x%x\n",
@@ -2296,21 +2318,31 @@ qla2x00_nvram_config(scsi_qla_host_t *vha)
}
#endif

+ qla_tgt_2x00_config_nvram_stage1(vha, nv);
+
/* Reset Initialization control block */
memset(icb, 0, ha->init_cb_size);

/*
* Setup driver NVRAM options.
*/
+ /* Enable ADISC and fairness */
nv->firmware_options[0] |= (BIT_6 | BIT_1);
nv->firmware_options[0] &= ~(BIT_5 | BIT_4);
nv->firmware_options[1] |= (BIT_5 | BIT_0);
+ /* Enable PDB changed AE */
+ nv->firmware_options[1] |= BIT_0;
+ /* Stop Port Queue on Full Status */
nv->firmware_options[1] &= ~BIT_4;

if (IS_QLA23XX(ha)) {
+ /* Enable full duplex */
nv->firmware_options[0] |= BIT_2;
+ /* Disable Fast Status Posting */
nv->firmware_options[0] &= ~BIT_3;
- nv->firmware_options[0] &= ~BIT_6;
+ /* out-of-order frames rassembly */
+ nv->special_options[0] |= BIT_6;
+ /* P2P preferred, otherwise loop */
nv->add_firmware_options[1] |= BIT_5 | BIT_4;

if (IS_QLA2300(ha)) {
@@ -2324,6 +2356,7 @@ qla2x00_nvram_config(scsi_qla_host_t *vha)
sizeof(nv->model_number), "QLA23xx");
}
} else if (IS_QLA2200(ha)) {
+ /* Enable full duplex */
nv->firmware_options[0] |= BIT_2;
/*
* 'Point-to-point preferred, else loop' is not a safe
@@ -2355,12 +2388,14 @@ qla2x00_nvram_config(scsi_qla_host_t *vha)
while (cnt--)
*dptr1++ = *dptr2++;

- /* Use alternate WWN? */
if (nv->host_p[1] & BIT_7) {
+ /* Use alternate WWN? */
memcpy(icb->node_name, nv->alternate_node_name, WWN_SIZE);
memcpy(icb->port_name, nv->alternate_port_name, WWN_SIZE);
}

+ qla_tgt_2x00_config_nvram_stage2(vha, icb);
+
/* Prepare nodename */
if ((icb->firmware_options[1] & BIT_6) == 0) {
/*
@@ -2505,14 +2540,21 @@ qla2x00_rport_del(void *data)
{
fc_port_t *fcport = data;
struct fc_rport *rport;
+ scsi_qla_host_t *vha = fcport->vha;
unsigned long flags;

spin_lock_irqsave(fcport->vha->host->host_lock, flags);
rport = fcport->drport ? fcport->drport: fcport->rport;
fcport->drport = NULL;
spin_unlock_irqrestore(fcport->vha->host->host_lock, flags);
- if (rport)
+ if (rport) {
fc_remote_port_delete(rport);
+ /*
+ * Release the target mode FC NEXUS in qla2x_target.c code
+ * if target mod is enabled.
+ */
+ qla_tgt_fc_port_deleted(vha, fcport);
+ }
}

/**
@@ -2895,6 +2937,12 @@ qla2x00_reg_remote_port(scsi_qla_host_t *vha, fc_port_t *fcport)
"Unable to allocate fc remote port!\n");
return;
}
+ /*
+ * Create target mode FC NEXUS in qla2x_target.c if target mode is
+ * enabled..
+ */
+ qla_tgt_fc_port_added(vha, fcport);
+
spin_lock_irqsave(fcport->vha->host->host_lock, flags);
*((fc_port_t **)rport->dd_data) = fcport;
spin_unlock_irqrestore(fcport->vha->host->host_lock, flags);
@@ -3554,11 +3602,13 @@ qla2x00_device_resync(scsi_qla_host_t *vha)
continue;

if (atomic_read(&fcport->state) == FCS_ONLINE) {
- if (format != 3 ||
- fcport->port_type != FCT_INITIATOR) {
+ if (vha->hw->qla2x_tmpl != NULL)
qla2x00_mark_device_lost(vha, fcport,
- 0, 0);
- }
+ 0, 0);
+ else if ((format != 3) ||
+ (fcport->port_type != FCT_INITIATOR))
+ qla2x00_mark_device_lost(vha, fcport,
+ 0, 0);
}
}
}
@@ -3706,6 +3756,13 @@ qla2x00_fabric_login(scsi_qla_host_t *vha, fc_port_t *fcport,
if (mb[10] & BIT_1)
fcport->supported_classes |= FC_COS_CLASS3;

+ if (IS_FWI2_CAPABLE(ha)) {
+ if (mb[10] & BIT_7)
+ fcport->conf_compl_supported = 1;
+ } else {
+ /* mb[10] bits are undocumented, ToDo */
+ }
+
rval = QLA_SUCCESS;
break;
} else if (mb[0] == MBS_LOOP_ID_USED) {
@@ -4067,6 +4124,8 @@ qla2x00_abort_isp(scsi_qla_host_t *vha)

vha->flags.online = 1;

+ qla_tgt_abort_isp(vha);
+
ha->isp_ops->enable_intrs(ha);

ha->isp_abort_cnt = 0;
@@ -4448,6 +4507,8 @@ qla24xx_nvram_config(scsi_qla_host_t *vha)
rval = 1;
}

+ qla_tgt_24xx_config_nvram_stage1(vha, nv);
+
/* Reset Initialization control block */
memset(icb, 0, ha->init_cb_size);

@@ -4475,8 +4536,10 @@ qla24xx_nvram_config(scsi_qla_host_t *vha)
qla2x00_set_model_info(vha, nv->model_name, sizeof(nv->model_name),
"QLA2462");

- /* Use alternate WWN? */
+ qla_tgt_24xx_config_nvram_stage2(vha, icb);
+
if (nv->host_p & __constant_cpu_to_le32(BIT_15)) {
+ /* Use alternate WWN? */
memcpy(icb->node_name, nv->alternate_node_name, WWN_SIZE);
memcpy(icb->port_name, nv->alternate_port_name, WWN_SIZE);
}
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index d78d589..214bcdf 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -5,14 +5,13 @@
* See LICENSE.qla2xxx for copyright and licensing details.
*/
#include "qla_def.h"
+#include "qla_target.h"

#include <linux/blkdev.h>
#include <linux/delay.h>

#include <scsi/scsi_tcq.h>

-static void qla2x00_isp_cmd(struct scsi_qla_host *, struct req_que *);
-
static void qla25xx_set_que(srb_t *, struct rsp_que **);
/**
* qla2x00_get_cmd_direction() - Determine control_flag data direction.
@@ -534,13 +533,111 @@ qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req,
return (ret);
}

+/*
+ * qla2x00_issue_marker
+ *
+ * Issue marker
+ * Caller CAN have hardware lock held as specified by ha_locked parameter.
+ * Might release it, then reaquire.
+ */
+int qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked)
+{
+ if (ha_locked) {
+ if (__qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0,
+ MK_SYNC_ALL) != QLA_SUCCESS)
+ return QLA_FUNCTION_FAILED;
+ } else {
+ if (qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0,
+ MK_SYNC_ALL) != QLA_SUCCESS)
+ return QLA_FUNCTION_FAILED;
+ }
+ vha->marker_needed = 0;
+
+ return QLA_SUCCESS;
+}
+
+/**
+ * qla2x00_req_pkt() - Retrieve a request packet from the request ring.
+ * @ha: HA context
+ *
+ * Note: The caller must hold the hardware lock before calling this routine.
+ * Might release it, then reaquire.
+ *
+ * Returns NULL if function failed, else, a pointer to the request packet.
+ */
+request_t *
+qla2x00_req_pkt(scsi_qla_host_t *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ device_reg_t __iomem *reg = ha->iobase;
+ request_t *pkt = NULL;
+ uint32_t *dword_ptr, timer;
+ uint16_t req_cnt = 1, cnt;
+
+ /* Wait 1 second for slot. */
+ for (timer = HZ; timer; timer--) {
+ if ((req_cnt + 2) >= vha->req->cnt) {
+ /* Calculate number of free request entries. */
+ if (IS_FWI2_CAPABLE(ha))
+ cnt = (uint16_t)RD_REG_DWORD(&reg->isp24.req_q_out);
+ else
+ cnt = qla2x00_debounce_register(
+ ISP_REQ_Q_OUT(ha, &reg->isp));
+
+ 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 room for request in request ring. */
+ if ((req_cnt + 2) < vha->req->cnt) {
+ vha->req->cnt--;
+ pkt = vha->req->ring_ptr;
+
+ /* Zero out packet. */
+ dword_ptr = (uint32_t *)pkt;
+ for (cnt = 0; cnt < REQUEST_ENTRY_SIZE / 4; cnt++)
+ *dword_ptr++ = 0;
+
+ /* Set system defined field. */
+ pkt->sys_define = (uint8_t)vha->req->ring_index;
+
+ /* Set entry count. */
+ pkt->entry_count = 1;
+
+ return pkt;
+ }
+
+ /* Release ring specific lock */
+ spin_unlock_irq(&ha->hardware_lock);
+
+ /* 2 us */
+ udelay(2);
+ /*
+ * Check for pending interrupts, during init we issue marker directly
+ */
+ if (!vha->marker_needed && !vha->flags.init_done)
+ qla2x00_poll(vha->req->rsp);
+
+ /* Reaquire ring specific lock */
+ spin_lock_irq(&ha->hardware_lock);
+ }
+
+ printk(KERN_INFO "Unable to locate request_t *pkt in ring\n");
+ dump_stack();
+
+ return NULL;
+}
+
/**
* qla2x00_isp_cmd() - Modify the request ring pointer.
* @ha: HA context
*
* Note: The caller must hold the hardware lock before calling this routine.
*/
-static void
+void
qla2x00_isp_cmd(struct scsi_qla_host *vha, struct req_que *req)
{
struct qla_hw_data *ha = vha->hw;
@@ -594,6 +691,7 @@ qla2x00_isp_cmd(struct scsi_qla_host *vha, struct req_que *req)
}

}
+EXPORT_SYMBOL(qla2x00_isp_cmd);

/**
* qla24xx_calc_iocbs() - Determine number of Command Type 3 and
@@ -1621,6 +1719,7 @@ skip_cmd_array:
queuing_error:
return pkt;
}
+EXPORT_SYMBOL(qla2x00_alloc_iocbs);

static void
qla2x00_start_iocbs(srb_t *sp)
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index d17ed9a..f50b157 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -5,6 +5,7 @@
* See LICENSE.qla2xxx for copyright and licensing details.
*/
#include "qla_def.h"
+#include "qla_target.h"

#include <linux/delay.h>
#include <linux/slab.h>
@@ -212,6 +213,12 @@ qla2300_intr_handler(int irq, void *dev_id)
mb[2] = RD_MAILBOX_REG(ha, reg, 2);
qla2x00_async_event(vha, rsp, mb);
break;
+ case 0x17: /* FAST_CTIO_COMP */
+ mb[0] = MBA_CTIO_COMPLETION;
+ mb[1] = MSW(stat);
+ mb[2] = RD_MAILBOX_REG(ha, reg, 2);
+ qla2x00_async_event(vha, rsp, mb);
+ break;
default:
DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
"(%d).\n",
@@ -331,6 +338,7 @@ qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
if (IS_QLA8XXX_TYPE(ha))
goto skip_rio;
switch (mb[0]) {
+ case MBA_CTIO_COMPLETION:
case MBA_SCSI_COMPLETION:
handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
handle_cnt = 1;
@@ -392,6 +400,10 @@ skip_rio:
handles[cnt]);
break;

+ case MBA_CTIO_COMPLETION:
+ qla_tgt_ctio_completion(vha, handles[0]);
+ break;
+
case MBA_RESET: /* Reset */
DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
vha->host_no));
@@ -450,8 +462,10 @@ skip_rio:
case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
vha->host_no));
- break;

+ if (qla_tgt_mode_enabled(vha))
+ set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+ break;
case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
mb[1]));
@@ -677,6 +691,8 @@ skip_rio:
DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
"ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
mb[2], mb[3]));
+
+ qla_tgt_async_event(mb[0], vha, mb);
break;
}

@@ -697,6 +713,8 @@ skip_rio:

set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
+
+ qla_tgt_async_event(mb[0], vha, mb);
break;

case MBA_RSCN_UPDATE: /* State Change Registration */
@@ -820,6 +838,8 @@ skip_rio:
break;
}

+ qla_tgt_async_event(mb[0], vha, mb);
+
if (!vha->vp_idx && ha->num_vhosts)
qla2x00_alert_all_vps(rsp, mb);
}
@@ -836,6 +856,11 @@ qla2x00_process_completed_request(struct scsi_qla_host *vha,
srb_t *sp;
struct qla_hw_data *ha = vha->hw;

+ if (HANDLE_IS_CTIO_COMP(index)) {
+ qla_tgt_ctio_completion(vha, index);
+ return;
+ }
+
/* Validate handle. */
if (index >= MAX_OUTSTANDING_COMMANDS) {
DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
@@ -1342,6 +1367,9 @@ qla2x00_process_response_queue(struct rsp_que *rsp)
while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
pkt = (sts_entry_t *)rsp->ring_ptr;

+ DEBUG5(printk(KERN_INFO "%s(): IOCB data:\n", __func__));
+ DEBUG5(qla2x00_dump_buffer((uint8_t *)pkt, RESPONSE_ENTRY_SIZE));
+
rsp->ring_index++;
if (rsp->ring_index == rsp->length) {
rsp->ring_index = 0;
@@ -1355,12 +1383,29 @@ qla2x00_process_response_queue(struct rsp_que *rsp)
"scsi(%ld): Process error entry.\n", vha->host_no));

qla2x00_error_entry(vha, rsp, pkt);
+
+ if (qla_tgt_2x00_process_response_error(vha, pkt) == 1)
+ break;
+
((response_t *)pkt)->signature = RESPONSE_PROCESSED;
wmb();
continue;
}

switch (pkt->entry_type) {
+ case ACCEPT_TGT_IO_TYPE:
+ case CONTINUE_TGT_IO_TYPE:
+ case CTIO_A64_TYPE:
+ case IMMED_NOTIFY_TYPE:
+ case NOTIFY_ACK_TYPE:
+ case ENABLE_LUN_TYPE:
+ case MODIFY_LUN_TYPE:
+ DEBUG5(printk(KERN_WARNING "qla2x00_response_pkt: calling"
+ " tgt_response_pkt %p (type %02X)\n",
+ qla_target.tgt_response_pkt, pkt->entry_type););
+
+ qla_tgt_response_pkt_all_vps(vha, (response_t *)pkt);
+ break;
case STATUS_TYPE:
qla2x00_status_entry(vha, rsp, pkt);
break;
@@ -1949,6 +1994,16 @@ qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
__func__, vha->host_no));
}
+
+#if defined(QL_DEBUG_LEVEL_1)
+ printk(KERN_INFO "scsi(%ld): Mailbox registers:", vha->host_no);
+ for (cnt = 0; cnt < vha->mbx_count; cnt++) {
+ if ((cnt % 4) == 0)
+ printk(KERN_CONT "\n");
+ printk("mbox %02d: 0x%04x ", cnt, ha->mailbox_out[cnt]);
+ }
+ printk(KERN_CONT "\n");
+#endif
}

/**
@@ -1980,6 +2035,10 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha,
"scsi(%ld): Process error entry.\n", vha->host_no));

qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
+
+ if (qla_tgt_24xx_process_response_error(vha, pkt) == 1)
+ break;
+
((response_t *)pkt)->signature = RESPONSE_PROCESSED;
wmb();
continue;
@@ -2011,6 +2070,14 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha,
case ELS_IOCB_TYPE:
qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
break;
+ case ABTS_RECV_24XX:
+ /* ensure that the ATIO queue is empty */
+ qla_tgt_24xx_process_atio_queue(vha);
+ case ABTS_RESP_24XX:
+ case CTIO_TYPE7:
+ case NOTIFY_ACK_TYPE:
+ qla_tgt_response_pkt_all_vps(vha, (response_t *)pkt);
+ break;
default:
/* Type Not Supported. */
DEBUG4(printk(KERN_WARNING
@@ -2156,6 +2223,13 @@ qla24xx_intr_handler(int irq, void *dev_id)
case 0x14:
qla24xx_process_response_queue(vha, rsp);
break;
+ case 0x1C: /* ATIO queue updated */
+ qla_tgt_24xx_process_atio_queue(vha);
+ break;
+ case 0x1D: /* ATIO and response queues updated */
+ qla_tgt_24xx_process_atio_queue(vha);
+ qla24xx_process_response_queue(vha, rsp);
+ break;
default:
DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
"(%d).\n",
@@ -2300,6 +2374,13 @@ qla24xx_msix_default(int irq, void *dev_id)
case 0x14:
qla24xx_process_response_queue(vha, rsp);
break;
+ case 0x1C: /* ATIO queue updated */
+ qla_tgt_24xx_process_atio_queue(vha);
+ break;
+ case 0x1D: /* ATIO and response queues updated */
+ qla_tgt_24xx_process_atio_queue(vha);
+ qla24xx_process_response_queue(vha, rsp);
+ break;
default:
DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
"(%d).\n",
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 7a7c0ec..0cd32b7 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -5,6 +5,7 @@
* See LICENSE.qla2xxx for copyright and licensing details.
*/
#include "qla_def.h"
+#include "qla_target.h"

#include <linux/delay.h>
#include <linux/gfp.h>
@@ -1187,6 +1188,99 @@ qla2x00_init_firmware(scsi_qla_host_t *vha, uint16_t size)
}

/*
+ * qla2x00_get_node_name_list
+ * Issue get node name list mailbox command, kmalloc()
+ * and return the resulting list. Caller must kfree() it!
+ *
+ * Input:
+ * ha = adapter state pointer.
+ * out_data = resulting list
+ * out_len = length of the resulting list
+ *
+ * Returns:
+ * qla2x00 local function return status code.
+ *
+ * Context:
+ * Kernel context.
+ */
+int
+qla2x00_get_node_name_list(scsi_qla_host_t *vha, void **out_data, int *out_len)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_port24_data *list = NULL;
+ void *pmap;
+ mbx_cmd_t mc;
+ dma_addr_t pmap_dma;
+ ulong dma_size;
+ int rval, left;
+
+ BUILD_BUG_ON(sizeof(struct qla_port24_data) <
+ sizeof(struct qla_port23_data));
+
+ left = 1;
+ while (left > 0) {
+ dma_size = left * sizeof(*list);
+ pmap = dma_alloc_coherent(&ha->pdev->dev, dma_size,
+ &pmap_dma, GFP_KERNEL);
+ if (!pmap) {
+ printk(KERN_ERR "%s(%ld): DMA Alloc failed of "
+ "%ld\n", __func__, vha->host_no, dma_size);
+ rval = QLA_MEMORY_ALLOC_FAILED;
+ goto out;
+ }
+
+ mc.mb[0] = MBC_PORT_NODE_NAME_LIST;
+ mc.mb[1] = BIT_1 | BIT_3;
+ mc.mb[2] = MSW(pmap_dma);
+ mc.mb[3] = LSW(pmap_dma);
+ mc.mb[6] = MSW(MSD(pmap_dma));
+ mc.mb[7] = LSW(MSD(pmap_dma));
+ mc.mb[8] = dma_size;
+ mc.out_mb = MBX_0|MBX_1|MBX_2|MBX_3|MBX_6|MBX_7|MBX_8;
+ mc.in_mb = MBX_0|MBX_1;
+ mc.tov = 30;
+ mc.flags = MBX_DMA_IN;
+
+ rval = qla2x00_mailbox_command(vha, &mc);
+ if (rval != QLA_SUCCESS) {
+ if ((mc.mb[0] == MBS_COMMAND_ERROR) &&
+ (mc.mb[1] == 0xA)) {
+ if (IS_FWI2_CAPABLE(ha))
+ left += le16_to_cpu(mc.mb[2]) / sizeof(struct qla_port24_data);
+ else
+ left += le16_to_cpu(mc.mb[2]) / sizeof(struct qla_port23_data);
+ goto restart;
+ }
+ goto out_free;
+ }
+
+ left = 0;
+
+ list = kzalloc(dma_size, GFP_KERNEL);
+ if (!list) {
+ printk(KERN_ERR "%s(%ld): failed to allocate node names"
+ " list structure.\n", __func__, vha->host_no);
+ rval = QLA_MEMORY_ALLOC_FAILED;
+ goto out_free;
+ }
+
+ memcpy(list, pmap, dma_size);
+restart:
+ dma_free_coherent(&ha->pdev->dev, dma_size, pmap, pmap_dma);
+ }
+
+ *out_data = list;
+ *out_len = dma_size;
+
+out:
+ return rval;
+
+out_free:
+ dma_free_coherent(&ha->pdev->dev, dma_size, pmap, pmap_dma);
+ return rval;
+}
+
+/*
* qla2x00_get_port_database
* Issue normal/enhanced get port database mailbox command
* and copy device name as necessary.
@@ -1281,10 +1375,17 @@ qla2x00_get_port_database(scsi_qla_host_t *vha, fc_port_t *fcport, uint8_t opt)
fcport->d_id.b.rsvd_1 = 0;

/* If not target must be initiator or unknown type. */
- if ((pd24->prli_svc_param_word_3[0] & BIT_4) == 0)
- fcport->port_type = FCT_INITIATOR;
- else
+ if ((pd24->prli_svc_param_word_3[0] & BIT_4))
fcport->port_type = FCT_TARGET;
+ else if ((pd24->prli_svc_param_word_3[0] & BIT_5))
+ fcport->port_type = FCT_INITIATOR;
+
+ /* Passback COS information. */
+ fcport->supported_classes = (pd24->flags & PDF_CLASS_2) ?
+ FC_COS_CLASS2 : FC_COS_CLASS3;
+
+ if (pd24->prli_svc_param_word_3[0] & BIT_7)
+ fcport->conf_compl_supported = 1;
} else {
/* Check for logged in state. */
if (pd->master_state != PD_STATE_PORT_LOGGED_IN &&
@@ -1304,14 +1405,17 @@ qla2x00_get_port_database(scsi_qla_host_t *vha, fc_port_t *fcport, uint8_t opt)
fcport->d_id.b.rsvd_1 = 0;

/* If not target must be initiator or unknown type. */
- if ((pd->prli_svc_param_word_3[0] & BIT_4) == 0)
- fcport->port_type = FCT_INITIATOR;
- else
+ if ((pd24->prli_svc_param_word_3[0] & BIT_4))
fcport->port_type = FCT_TARGET;
+ else if ((pd24->prli_svc_param_word_3[0] & BIT_5))
+ fcport->port_type = FCT_INITIATOR;

/* Passback COS information. */
fcport->supported_classes = (pd->options & BIT_4) ?
FC_COS_CLASS2: FC_COS_CLASS3;
+
+ if (pd->prli_svc_param_word_3[0] & BIT_7)
+ fcport->conf_compl_supported = 1;
}

gpd_error_out:
@@ -1326,6 +1430,7 @@ gpd_error_out:

return rval;
}
+EXPORT_SYMBOL(qla2x00_get_port_database);

/*
* qla2x00_get_firmware_state
@@ -1684,6 +1789,8 @@ qla24xx_login_fabric(scsi_qla_host_t *vha, uint16_t loop_id, uint8_t domain,
mb[10] |= BIT_0; /* Class 2. */
if (lg->io_parameter[9] || lg->io_parameter[10])
mb[10] |= BIT_1; /* Class 3. */
+ if (lg->io_parameter[0] & __constant_cpu_to_le32(BIT_7))
+ mb[10] |= BIT_7; /* Confirmed Completion Allowed */
}

dma_pool_free(ha->s_dma_pool, lg, lg_dma);
@@ -3007,6 +3114,9 @@ qla24xx_modify_vp_config(scsi_qla_host_t *vha)
vpmod->vp_count = 1;
vpmod->vp_index1 = vha->vp_idx;
vpmod->options_idx1 = BIT_3|BIT_4|BIT_5;
+
+ qla_tgt_modify_vp_config(vha, vpmod);
+
memcpy(vpmod->node_name_idx1, vha->node_name, WWN_SIZE);
memcpy(vpmod->port_name_idx1, vha->port_name, WWN_SIZE);
vpmod->entry_count = 1;
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index 2b69392..b91a50a 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -6,6 +6,7 @@
*/
#include "qla_def.h"
#include "qla_gbl.h"
+#include "qla_target.h"

#include <linux/moduleparam.h>
#include <linux/vmalloc.h>
@@ -48,6 +49,7 @@ qla24xx_allocate_vp_id(scsi_qla_host_t *vha)

spin_lock_irqsave(&ha->vport_slock, flags);
list_add_tail(&vha->list, &ha->vp_list);
+ ha->tgt_vp_map[vp_id].vha = vha;
spin_unlock_irqrestore(&ha->vport_slock, flags);

mutex_unlock(&ha->vport_lock);
@@ -78,6 +80,7 @@ qla24xx_deallocate_vp_id(scsi_qla_host_t *vha)
spin_lock_irqsave(&ha->vport_slock, flags);
}
list_del(&vha->list);
+ ha->tgt_vp_map[vha->vp_idx].vha = NULL;
spin_unlock_irqrestore(&ha->vport_slock, flags);

vp_id = vha->vp_idx;
@@ -143,12 +146,16 @@ qla2x00_mark_vp_devices_dead(scsi_qla_host_t *vha)
int
qla24xx_disable_vp(scsi_qla_host_t *vha)
{
+ struct qla_hw_data *ha = vha->hw;
int ret;

ret = qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
atomic_set(&vha->loop_state, LOOP_DOWN);
atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);

+ /* Remove port id from vp target map */
+ ha->tgt_vp_map[vha->d_id.b.al_pa].idx = 0;
+
qla2x00_mark_vp_devices_dead(vha);
atomic_set(&vha->vp_state, VP_FAILED);
vha->flags.management_server_logged_in = 0;
@@ -266,6 +273,8 @@ qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
int
qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
{
+ int ret;
+
/*
* Physical port will do most of the abort and recovery work. We can
* just treat it as a loop down
@@ -288,7 +297,17 @@ qla2x00_vp_abort_isp(scsi_qla_host_t *vha)

DEBUG15(printk("scsi(%ld): Scheduling enable of Vport %d...\n",
vha->host_no, vha->vp_idx));
- return qla24xx_enable_vp(vha);
+ ret = qla24xx_enable_vp(vha);
+ if (ret)
+ return ret;
+
+ /* Enable target response to SCSI bus. */
+ if (qla_tgt_mode_enabled(vha)) {
+ DEBUG15(printk("qla2x00_vp_abort_isp() calling qla2x00_send_enable_lun()\n"));
+ qla2x00_send_enable_lun(vha, true);
+ }
+
+ return 0;
}

static int
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 75a966c..7f29370 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -5,6 +5,7 @@
* See LICENSE.qla2xxx for copyright and licensing details.
*/
#include "qla_def.h"
+#include "qla_target.h"

#include <linux/moduleparam.h>
#include <linux/vmalloc.h>
@@ -36,6 +37,12 @@ static struct kmem_cache *srb_cachep;
*/
static struct kmem_cache *ctx_cachep;

+int ql2xenableclass2;
+module_param(ql2xenableclass2, int, S_IRUGO|S_IRUSR);
+MODULE_PARM_DESC(ql2xenableclass2,
+ "Specify if Class 2 operations are supported from the very "
+ "beginning.");
+
int ql2xlogintimeout = 20;
module_param(ql2xlogintimeout, int, S_IRUGO);
MODULE_PARM_DESC(ql2xlogintimeout,
@@ -208,6 +215,8 @@ struct scsi_host_template qla2xxx_driver_template = {

.max_sectors = 0xFFFF,
.shost_attrs = qla2x00_host_attrs,
+
+ .supported_mode = MODE_INITIATOR | MODE_TARGET,
};

static struct scsi_transport_template *qla2xxx_transport_template = NULL;
@@ -758,7 +767,7 @@ qla2x00_wait_for_chip_reset(scsi_qla_host_t *vha)
* Success (LOOP_READY) : 0
* Failed (LOOP_NOT_READY) : 1
*/
-static inline int
+static int
qla2x00_wait_for_loop_ready(scsi_qla_host_t *vha)
{
int return_status = QLA_SUCCESS;
@@ -791,6 +800,38 @@ sp_get(struct srb *sp)
atomic_inc(&sp->ref_count);
}

+void
+qla2xxx_abort_fcport_cmds(fc_port_t *fcport)
+{
+ scsi_qla_host_t *vha = fcport->vha;
+ struct qla_hw_data *ha = vha->hw;
+ srb_t *sp;
+ unsigned long flags;
+ int cnt;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
+ sp = vha->req->outstanding_cmds[cnt];
+ if (!sp)
+ continue;
+ if (sp->fcport != fcport)
+ continue;
+
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ if (ha->isp_ops->abort_command(sp)) {
+ DEBUG2(qla_printk(KERN_WARNING, ha,
+ "Abort failed -- %lx\n", sp->cmd->serial_number));
+ } else {
+ if (qla2x00_eh_wait_on_command(sp->cmd) != QLA_SUCCESS)
+ DEBUG2(qla_printk(KERN_WARNING, ha,
+ "Abort failed while waiting -- %lx\n",
+ sp->cmd->serial_number));
+ }
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
/**************************************************************************
* qla2xxx_eh_abort
*
@@ -1940,6 +1981,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
goto probe_out;
}
ha->pdev = pdev;
+ ha->enable_class_2 = ql2xenableclass2;

/* Clear our data area */
ha->bars = bars;
@@ -2011,6 +2053,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
ha->mbx_count = MAILBOX_REGISTER_COUNT;
req_length = REQUEST_ENTRY_CNT_24XX;
rsp_length = RESPONSE_ENTRY_CNT_2300;
+ ha->atio_q_length = ATIO_ENTRY_CNT_24XX;
ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
ha->gid_list_info_size = 8;
@@ -2025,6 +2068,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
ha->mbx_count = MAILBOX_REGISTER_COUNT;
req_length = REQUEST_ENTRY_CNT_24XX;
rsp_length = RESPONSE_ENTRY_CNT_2300;
+ ha->atio_q_length = ATIO_ENTRY_CNT_24XX;
ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
ha->gid_list_info_size = 8;
@@ -2132,6 +2176,8 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
host->transportt = qla2xxx_transport_template;
sht->vendor_id = (SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC);

+ qla_tgt_probe_one_stage1(base_vha, ha);
+
/* Set up the irqs */
ret = qla2x00_request_irqs(ha, rsp);
if (ret)
@@ -2271,6 +2317,8 @@ skip_dpc:
ha->flags.enable_64bit_addressing ? '+' : '-', base_vha->host_no,
ha->isp_ops->fw_version_str(base_vha, fw_str));

+ qla_tgt_add_target(ha, base_vha);
+
return 0;

probe_init_failed:
@@ -2351,15 +2399,33 @@ qla2x00_shutdown(struct pci_dev *pdev)
}

static void
+qla2x00_stop_dpc_thread(scsi_qla_host_t *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct task_struct *t = ha->dpc_thread;
+
+ if (ha->dpc_thread == NULL)
+ return;
+ /*
+ * qla2xxx_wake_dpc checks for ->dpc_thread
+ * so we need to zero it out.
+ */
+ ha->dpc_thread = NULL;
+ kthread_stop(t);
+}
+
+static void
qla2x00_remove_one(struct pci_dev *pdev)
{
scsi_qla_host_t *base_vha, *vha;
- struct qla_hw_data *ha;
+ struct qla_hw_data *ha;
unsigned long flags;

base_vha = pci_get_drvdata(pdev);
ha = base_vha->hw;

+ ha->host_shutting_down = 1;
+
spin_lock_irqsave(&ha->vport_slock, flags);
list_for_each_entry(vha, &ha->vp_list, list) {
atomic_inc(&vha->vref_count);
@@ -2408,6 +2474,7 @@ qla2x00_remove_one(struct pci_dev *pdev)
ha->dpc_thread = NULL;
kthread_stop(t);
}
+ qla_tgt_remove_target(ha, base_vha);

qla2x00_free_sysfs_attr(base_vha);

@@ -2456,17 +2523,7 @@ qla2x00_free_device(scsi_qla_host_t *vha)
if (vha->timer_active)
qla2x00_stop_timer(vha);

- /* Kill the kernel thread for this host */
- if (ha->dpc_thread) {
- struct task_struct *t = ha->dpc_thread;
-
- /*
- * qla2xxx_wake_dpc checks for ->dpc_thread
- * so we need to zero it out.
- */
- ha->dpc_thread = NULL;
- kthread_stop(t);
- }
+ qla2x00_stop_dpc_thread(vha);

qla25xx_delete_queues(vha);

@@ -2635,10 +2692,13 @@ qla2x00_mem_alloc(struct qla_hw_data *ha, uint16_t req_len, uint16_t rsp_len,
if (!ha->init_cb)
goto fail;

+ if (qla_tgt_mem_alloc(ha) < 0)
+ goto fail_free_init_cb;
+
ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
&ha->gid_list_dma, GFP_KERNEL);
if (!ha->gid_list)
- goto fail_free_init_cb;
+ goto fail_free_tgt_mem;

ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
if (!ha->srb_mempool)
@@ -2829,6 +2889,8 @@ fail_free_gid_list:
ha->gid_list_dma);
ha->gid_list = NULL;
ha->gid_list_dma = 0;
+fail_free_tgt_mem:
+ qla_tgt_mem_free(ha);
fail_free_init_cb:
dma_free_coherent(&ha->pdev->dev, ha->init_cb_size, ha->init_cb,
ha->init_cb_dma);
@@ -2946,6 +3008,8 @@ qla2x00_mem_free(struct qla_hw_data *ha)
if (ha->ctx_mempool)
mempool_destroy(ha->ctx_mempool);

+ qla_tgt_mem_free(ha);
+
if (ha->init_cb)
dma_free_coherent(&ha->pdev->dev, ha->init_cb_size,
ha->init_cb, ha->init_cb_dma);
@@ -2974,6 +3038,10 @@ qla2x00_mem_free(struct qla_hw_data *ha)

ha->gid_list = NULL;
ha->gid_list_dma = 0;
+
+ ha->atio_ring = NULL;
+ ha->atio_dma = 0;
+ ha->tgt_vp_map = NULL;
}

struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
@@ -4119,6 +4187,13 @@ qla2x00_module_init(void)
return -ENOMEM;
}

+ /* Initialize target kmem_cache and mem_pools */
+ ret = qla_tgt_init();
+ if (ret < 0) {
+ kmem_cache_destroy(srb_cachep);
+ return ret;
+ }
+
/* Derive version string. */
strcpy(qla2x00_version_str, QLA2XXX_VERSION);
if (ql2xextended_error_logging)
@@ -4128,6 +4203,7 @@ qla2x00_module_init(void)
fc_attach_transport(&qla2xxx_transport_functions);
if (!qla2xxx_transport_template) {
kmem_cache_destroy(srb_cachep);
+ qla_tgt_exit();
return -ENODEV;
}

@@ -4141,6 +4217,7 @@ qla2x00_module_init(void)
fc_attach_transport(&qla2xxx_transport_vport_functions);
if (!qla2xxx_transport_vport_template) {
kmem_cache_destroy(srb_cachep);
+ qla_tgt_exit();
fc_release_transport(qla2xxx_transport_template);
return -ENODEV;
}
@@ -4150,6 +4227,7 @@ qla2x00_module_init(void)
ret = pci_register_driver(&qla2xxx_pci_driver);
if (ret) {
kmem_cache_destroy(srb_cachep);
+ qla_tgt_exit();
fc_release_transport(qla2xxx_transport_template);
fc_release_transport(qla2xxx_transport_vport_template);
}
@@ -4166,6 +4244,7 @@ qla2x00_module_exit(void)
pci_unregister_driver(&qla2xxx_pci_driver);
qla2x00_release_firmware();
kmem_cache_destroy(srb_cachep);
+ qla_tgt_exit();
if (ctx_cachep)
kmem_cache_destroy(ctx_cachep);
fc_release_transport(qla2xxx_transport_template);
--
1.7.4.3