* [PATCH 0/3] qla2xxx: Add target mode LLD and TCM fabric support
@ 2012-03-16 23:23 Nicholas A. Bellinger
2012-03-16 23:23 ` [PATCH 1/3] qla2xxx: Add LLD target-mode infrastructure for >= 24xx series Nicholas A. Bellinger
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Nicholas A. Bellinger @ 2012-03-16 23:23 UTC (permalink / raw)
To: linux-scsi, linux-kernel
Cc: target-devel, Qlogic Linux Team, Andrew Vasquez, Arun Easi,
Giridhar Malavali, Christoph Hellwig, James Bottomley,
Roland Dreier, Joern Engel, Madhuranath Iyengar,
Nicholas Bellinger
From: Nicholas Bellinger <nab@linux-iscsi.org>
Hello Qlogic Linux and SCSI/target folks,
This updated patch series for an initial v3.4 mainline merge of qla2xxx
target mode has been cut against jejb's scsi-misc/master branch to include
for-3.4 changes to current qla2xxx LLD code.
It's available now in the latest target-pending/for-next-merge HEAD:
git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending.git for-next-merge
Updating to v3.4-rc0 bound scsi-misc qla2xxx patches from RFC-v5 was mostly
straight forward, and also included dropping a few minor bits that have been
merged in upstream qla2xxx LLD code.
As discussed during RFC-v5, patch #1 in this series now includes:
commit 45348067c9a8b911ec6f09829b4c91bd310eb6ef
Author: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Fri Mar 16 15:20:34 2012 -0700
qla_target: Convert to qlini_mode='enabled' by default
to disable target mode operation so that existing qla2xxx.ko initiator mode
is *always* enabled by default. As we don't have a resolution yet for interaction
between scsi-core <-> target-core subsystems for 'hot' transition between
different mixed mode operation, the initial merge of this code will require:
modprobe qla2xxx qlini_mode="disabled"
in order to access and register scsi_qla_host ports for target mode ops via
normal tcm_qla2xxx WWPN group registration.
So at this point, patch #2 is the most imporant to ensure the changes required
for qla_target.c infrstructure in existing LLD code to not cause regressions
for existing SCSI initiator mode operation. Andrew & Co, it would be great if
you could have a look and let us know if you have any immediate concerns here.
This update also includes changes from this week's round of linux-next feedback.
Thanks again to DanC, Joern, and all those who has been contributing to improve
this code!
--nab
Nicholas Bellinger (3):
qla2xxx: Add LLD target-mode infrastructure for >= 24xx series
qla2xxx: Enable >= 24xx target-mode support in SCSI LLD
tcm_qla2xxx: Add >= 24xx series fabric module for target-core
drivers/scsi/qla2xxx/Kconfig | 8 +
drivers/scsi/qla2xxx/Makefile | 3 +-
drivers/scsi/qla2xxx/qla_attr.c | 5 +-
drivers/scsi/qla2xxx/qla_dbg.c | 5 +
drivers/scsi/qla2xxx/qla_dbg.h | 5 +
drivers/scsi/qla2xxx/qla_def.h | 69 +-
drivers/scsi/qla2xxx/qla_gbl.h | 7 +
drivers/scsi/qla2xxx/qla_gs.c | 4 +-
drivers/scsi/qla2xxx/qla_init.c | 82 +-
drivers/scsi/qla2xxx/qla_iocb.c | 102 +-
drivers/scsi/qla2xxx/qla_isr.c | 83 +-
drivers/scsi/qla2xxx/qla_mbx.c | 101 +
drivers/scsi/qla2xxx/qla_mid.c | 17 +-
drivers/scsi/qla2xxx/qla_os.c | 133 +-
drivers/scsi/qla2xxx/qla_target.c | 4724 ++++++++++++++++++++++++++++++++++++
drivers/scsi/qla2xxx/qla_target.h | 986 ++++++++
drivers/scsi/qla2xxx/tcm_qla2xxx.c | 1981 +++++++++++++++
drivers/scsi/qla2xxx/tcm_qla2xxx.h | 149 ++
18 files changed, 8429 insertions(+), 35 deletions(-)
create mode 100644 drivers/scsi/qla2xxx/qla_target.c
create mode 100644 drivers/scsi/qla2xxx/qla_target.h
create mode 100644 drivers/scsi/qla2xxx/tcm_qla2xxx.c
create mode 100644 drivers/scsi/qla2xxx/tcm_qla2xxx.h
--
1.7.2.5
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 1/3] qla2xxx: Add LLD target-mode infrastructure for >= 24xx series
2012-03-16 23:23 [PATCH 0/3] qla2xxx: Add target mode LLD and TCM fabric support Nicholas A. Bellinger
@ 2012-03-16 23:23 ` Nicholas A. Bellinger
2012-03-16 23:23 ` [PATCH 2/3] qla2xxx: Enable >= 24xx target-mode support in SCSI LLD Nicholas A. Bellinger
2012-03-16 23:23 ` [PATCH 3/3] tcm_qla2xxx: Add >= 24xx series fabric module for target-core Nicholas A. Bellinger
2 siblings, 0 replies; 4+ messages in thread
From: Nicholas A. Bellinger @ 2012-03-16 23:23 UTC (permalink / raw)
To: linux-scsi, linux-kernel
Cc: target-devel, Qlogic Linux Team, Andrew Vasquez, Arun Easi,
Giridhar Malavali, Christoph Hellwig, James Bottomley,
Roland Dreier, Joern Engel, Madhuranath Iyengar,
Nicholas Bellinger
From: Nicholas Bellinger <nab@linux-iscsi.org>
This patch adds the internal qla_target.[c,h] support pieces for qla2xxx
LLD target mode for 24xx series HW. This code was originally based on
external qla2x00t module based on 8.02.01-k4, and has been refactored to push
the bulk of code into mainline qla2xxx.ko LLD -> qla_target.c.
The implementation uses internal workqueues for I/O context submission
into tcm_qla2xxx code, and includes the following API for external
interaction to allow qla2xxx LDD to function without direct target-core
dependencies:
struct qla_tgt_func_tmpl {
int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *,
unsigned char *, uint32_t, int, int, int);
int (*handle_data)(struct qla_tgt_cmd *);
int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t, uint32_t);
void (*free_cmd)(struct qla_tgt_cmd *);
void (*free_mcmd)(struct qla_tgt_mgmt_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 *);
void (*clear_nacl_from_fcport_map)(struct qla_tgt_sess *);
void (*put_sess)(struct qla_tgt_sess *);
};
(nab: Add qla_tgt_func_tmpl->free_mcmd() usage in qla_tgt_xmit_tm_rsp +
Fix possible NULL dereference in qla_tgt_handle_srr_work (DanC) +
Fix NULL pointer dereference in qla_tgt_abort_task (DanC) +
Convert to qlini_mode='enabled' by default in qla_target.c)
(joern: Remove loop_id from qla_tgt_make_local_sess() arguments +
Remove unused s_id + fix s_id endianness bug +
simplify qla_tgt_abort_work)
(gerard: fix section __exit mismatch in qla_tgt_exit)
Cc: Andrew Vasquez <andrew.vasquez@qlogic.com>
Cc: Arun Easi <arun.easi@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: James Bottomley <JBottomley@Parallels.com>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Joern Engel <joern@logfs.org>
Cc: Madhuranath Iyengar <mni@risingtidesystems.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
---
drivers/scsi/qla2xxx/Makefile | 2 +-
drivers/scsi/qla2xxx/qla_target.c | 4724 +++++++++++++++++++++++++++++++++++++
drivers/scsi/qla2xxx/qla_target.h | 986 ++++++++
3 files changed, 5711 insertions(+), 1 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/Makefile b/drivers/scsi/qla2xxx/Makefile
index 5df782f..702931ff 100644
--- a/drivers/scsi/qla2xxx/Makefile
+++ b/drivers/scsi/qla2xxx/Makefile
@@ -1,5 +1,5 @@
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
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
new file mode 100644
index 0000000..7368fcb
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -0,0 +1,4724 @@
+/*
+ * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx
+ *
+ * based on qla2x00t.c code:
+ *
+ * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
+ * Copyright (C) 2004 - 2005 Leonid Stoljar
+ * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
+ * Copyright (C) 2006 - 2010 ID7 Ltd.
+ *
+ * Forward port and refactoring to modern qla2xxx and target/configfs
+ *
+ * Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org>
+ *
+ * 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 <linux/workqueue.h>
+#include <asm/unaligned.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_tcq.h>
+#include <target/target_core_base.h>
+#include <target/target_core_fabric.h>
+
+#include "qla_def.h"
+#include "qla_target.h"
+
+static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED;
+module_param(qlini_mode, charp, S_IRUGO);
+MODULE_PARM_DESC(qlini_mode,
+ "Determines when initiator mode will be enabled. Possible values: "
+ "\"exclusive\" - initiator mode will be enabled on load, "
+ "disabled on enabling target mode and then on disabling target mode "
+ "enabled back; "
+ "\"disabled\" - initiator mode will never be enabled; "
+ "\"enabled\" (default) - initiator mode will always stay enabled.");
+
+static int ql2x_ini_mode = QLA2XXX_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.
+ */
+/* Predefs for callbacks handed to qla2xxx LLD */
+static void qla_tgt_24xx_atio_pkt(struct scsi_qla_host *ha, atio_from_isp_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 qla_tgt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd *cmd,
+ atio_from_isp_t *atio, int ha_locked);
+static void qla_tgt_reject_free_srr_imm(struct scsi_qla_host *ha, struct qla_tgt_srr_imm *imm,
+ int ha_lock);
+/*
+ * 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 struct workqueue_struct *qla_tgt_wq;
+static DEFINE_MUTEX(qla_tgt_mutex);
+static LIST_HEAD(qla_tgt_glist);
+/*
+ * 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 (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;
+ uint8_t vp_idx;
+
+ 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;
+
+ 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;
+
+ 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 qla_tgt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, atio_from_isp_t *atio)
+{
+ switch (atio->u.raw.entry_type) {
+ case ATIO_TYPE7:
+ {
+ struct scsi_qla_host *host = qla_tgt_find_host_by_d_id(vha,
+ atio->u.isp24.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->u.isp24.fcp_hdr.d_id[0],
+ atio->u.isp24.fcp_hdr.d_id[1],
+ atio->u.isp24.fcp_hdr.d_id[2]);
+ break;
+ }
+ qla_tgt_24xx_atio_pkt(host, atio);
+ break;
+ }
+
+ case IMMED_NOTIFY_TYPE:
+ {
+ struct scsi_qla_host *host = vha;
+ imm_ntfy_from_isp_t *entry = (imm_ntfy_from_isp_t *)atio;
+
+ if ((entry->u.isp24.vp_index != 0xFF) &&
+ (entry->u.isp24.nport_handle != 0xFFFF)) {
+ host = qla_tgt_find_host_by_vp_idx(vha,
+ entry->u.isp24.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->u.isp24.vp_index);
+ break;
+ }
+ }
+ qla_tgt_24xx_atio_pkt(host, atio);
+ break;
+ }
+
+ default:
+ printk(KERN_ERR "qla_target(%d): Received unknown ATIO atio "
+ "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
+ break;
+ }
+
+ return;
+}
+
+void qla_tgt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt)
+{
+ switch (pkt->entry_type) {
+ case CTIO_TYPE7:
+ {
+ ctio7_from_24xx_t *entry = (ctio7_from_24xx_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;
+ imm_ntfy_from_isp_t *entry = (imm_ntfy_from_isp_t *)pkt;
+
+ host = qla_tgt_find_host_by_vp_idx(vha, entry->u.isp24.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->u.isp24.vp_index);
+ break;
+ }
+ qla_tgt_response_pkt(host, pkt);
+ break;
+ }
+
+ case NOTIFY_ACK_TYPE:
+ {
+ struct scsi_qla_host *host = vha;
+ nack_to_isp_t *entry = (nack_to_isp_t *)pkt;
+
+ if (0xFF != entry->u.isp24.vp_index) {
+ host = qla_tgt_find_host_by_vp_idx(vha,
+ entry->u.isp24.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->u.isp24.vp_index);
+ break;
+ }
+ }
+ qla_tgt_response_pkt(host, pkt);
+ break;
+ }
+
+ case ABTS_RECV_24XX:
+ {
+ abts_recv_from_24xx_t *entry = (abts_recv_from_24xx_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:
+ {
+ abts_resp_to_24xx_t *entry = (abts_resp_to_24xx_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;
+ }
+
+}
+
+static void qla_tgt_free_session_done(struct work_struct *work)
+{
+ struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess,
+ free_work);
+ struct qla_tgt *tgt = sess->tgt;
+ struct scsi_qla_host *vha = sess->vha;
+ struct qla_hw_data *ha = vha->hw;
+
+ BUG_ON(!tgt);
+ /*
+ * Release the target session for FC Nexus from fabric module code.
+ */
+ if (sess->se_sess != NULL)
+ ha->tgt_ops->free_session(sess);
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe104, "Unregistration of"
+ " sess %p finished\n", sess);
+
+ kfree(sess);
+ /*
+ * 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 */
+void qla_tgt_unreg_sess(struct qla_tgt_sess *sess)
+{
+ struct scsi_qla_host *vha = sess->vha;
+
+ vha->hw->tgt_ops->clear_nacl_from_fcport_map(sess);
+
+ list_del(&sess->sess_list_entry);
+ if (sess->deleted)
+ list_del(&sess->del_list_entry);
+
+ INIT_WORK(&sess->free_work, qla_tgt_free_session_done);
+ schedule_work(&sess->free_work);
+}
+EXPORT_SYMBOL(qla_tgt_unreg_sess);
+
+/* 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;
+ imm_ntfy_from_isp_t *n = (imm_ntfy_from_isp_t *)iocb;
+ atio_from_isp_t *a = (atio_from_isp_t *)iocb;
+
+ loop_id = le16_to_cpu(n->u.isp24.nport_handle);
+ if (loop_id == 0xFFFF) {
+/* 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->tgt_ops->find_sess_by_loop_id(vha, loop_id);
+ }
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe003, "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);
+
+ lun = a->u.isp24.fcp_cmnd.lun;
+ unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
+
+ return qla_tgt_issue_task_mgmt(sess, unpacked_lun, mcmd,
+ iocb, QLA24XX_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, bool immediate)
+{
+ struct qla_tgt *tgt = sess->tgt;
+ uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5;
+
+ if (sess->deleted)
+ return;
+
+ ql_dbg(ql_dbg_tgt, sess->vha, 0xe004, "Scheduling sess %p for"
+ " deletion\n", sess);
+ list_add_tail(&sess->del_list_entry, &tgt->del_sess_list);
+ sess->deleted = 1;
+
+ if (immediate)
+ dev_loss_tmo = 0;
+
+ sess->expires = jiffies + dev_loss_tmo * HZ;
+
+ printk(KERN_INFO "qla_target(%d): session for port %02x:%02x:%02x:"
+ "%02x:%02x:%02x:%02x:%02x (loop ID %d) scheduled for "
+ "deletion in %u secs (expires: %lu) immed: %d\n", sess->vha->vp_idx,
+ sess->port_name[0], sess->port_name[1],
+ sess->port_name[2], sess->port_name[3],
+ sess->port_name[4], sess->port_name[5],
+ sess->port_name[6], sess->port_name[7],
+ sess->loop_id, dev_loss_tmo, sess->expires, immediate);
+
+ if (immediate)
+ schedule_delayed_work(&tgt->sess_del_work, 0);
+ else
+ schedule_delayed_work(&tgt->sess_del_work, jiffies - sess->expires);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static void qla_tgt_clear_tgt_db(struct qla_tgt *tgt, bool local_only)
+{
+ struct qla_tgt_sess *sess;
+
+ list_for_each_entry(sess, &tgt->sess_list, sess_list_entry)
+ qla_tgt_schedule_sess_for_deletion(sess, true);
+
+ /* At this point tgt could be already dead */
+}
+
+static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id,
+ uint16_t *loop_id)
+{
+ struct qla_hw_data *ha = vha->hw;
+ dma_addr_t gid_list_dma;
+ struct gid_list_info *gid_list;
+ char *id_iter;
+ int res, rc, i;
+ uint16_t entries;
+
+ gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha),
+ &gid_list_dma, GFP_KERNEL);
+ if (!gid_list) {
+ printk(KERN_ERR "qla_target(%d): DMA Alloc failed of %u\n",
+ vha->vp_idx, qla2x00_gid_list_size(ha));
+ return -ENOMEM;
+ }
+
+ /* Get list of logged in devices */
+ rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries);
+ if (rc != QLA_SUCCESS) {
+ 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, qla2x00_gid_list_size(ha),
+ 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;
+ struct qla_port_24xx_data *pmap24;
+ bool res, found = false;
+ int rc, i;
+ uint16_t loop_id = 0xFFFF; /* to eliminate compiler's warning */
+ uint16_t entries;
+ void *pmap;
+ int pmap_len;
+ fc_port_t *fcport;
+ int global_resets;
+
+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;
+ }
+
+ 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;
+ }
+ }
+
+ 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)) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe105, "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;
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe106, "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);
+
+ if (cancel) {
+ if (sess->deleted) {
+ /*
+ * sess was again deleted while we were
+ * discovering it
+ */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ 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 {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe107, "Timeout: sess %p"
+ " about to be deleted\n", sess);
+ ha->tgt_ops->put_sess(sess);
+ }
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ } else {
+ schedule_delayed_work(&tgt->sess_del_work,
+ jiffies - sess->expires);
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+/*
+ * Adds an extra ref to allow to drop hw lock after adding sess to the list.
+ * Caller must put it.
+ */
+static struct qla_tgt_sess *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])) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe108, "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->tgt = ha->qla_tgt;
+ sess->vha = vha;
+ sess->s_id = fcport->d_id;
+ sess->loop_id = fcport->loop_id;
+ sess->local = local;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe109, "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->tgt_ops->check_initiator_node_acl(vha, &fcport->port_name[0],
+ sess, &be_sid[0], fcport->loop_id) < 0) {
+ kfree(sess);
+ return NULL;
+ }
+ /*
+ * Take an extra reference to ->sess_kref here to handle qla_tgt_sess
+ * access across ->hardware_lock reaquire.
+ */
+ kref_get(&sess->se_sess->sess_kref);
+
+ sess->conf_compl_supported = fcport->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;
+
+ if (!vha->hw->tgt_ops)
+ return;
+
+ if (!tgt || (fcport->port_type != FCT_INITIATOR))
+ return;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (tgt->tgt_stop) {
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return;
+ }
+ sess = qla_tgt_find_sess_by_port_name(tgt, fcport->port_name);
+ if (!sess) {
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ 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);
+ } else {
+ kref_get(&sess->se_sess->sess_kref);
+
+ 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);
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe10a, "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);
+
+ ha->tgt_ops->put_sess(sess);
+}
+
+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->tgt_ops)
+ return;
+
+ if (!tgt || (fcport->port_type != FCT_INITIATOR))
+ return;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (tgt->tgt_stop) {
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return;
+ }
+ sess = qla_tgt_find_sess_by_port_name(tgt, fcport->port_name);
+ if (!sess) {
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return;
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe10b, "qla_tgt_fc_port_deleted %p", sess);
+
+ sess->local = 1;
+ qla_tgt_schedule_sess_for_deletion(sess, false);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+static inline int test_tgt_sess_count(struct qla_tgt *tgt)
+{
+ struct qla_hw_data *ha = tgt->ha;
+ unsigned long flags;
+ int res;
+ /*
+ * We need to protect against race, when tgt is freed before or
+ * inside wake_up()
+ */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ ql_dbg(ql_dbg_tgt, tgt->vha, 0xe005, "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;
+ }
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe006, "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, true);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ mutex_unlock(&ha->tgt_mutex);
+
+ flush_delayed_work_sync(&tgt->sess_del_work);
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe10c, "Waiting for sess works (tgt %p)", tgt);
+ spin_lock_irqsave(&tgt->sess_work_lock, flags);
+ while (!list_empty(&tgt->sess_works_list)) {
+ spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+ flush_scheduled_work();
+ spin_lock_irqsave(&tgt->sess_work_lock, flags);
+ }
+ spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe10d, "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;
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xe10e, "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);
+
+ ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xe10f, "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;
+
+ ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xe110, "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;
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xe111, "Scheduling work (type %d, prm %p)"
+ " to find session for param %p (size %d, tgt %p)\n", type, prm, param,
+ param_size, tgt);
+
+ prm->type = type;
+ memcpy(&prm->tm_iocb, param, param_size);
+
+ spin_lock_irqsave(&tgt->sess_work_lock, flags);
+ 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_send_notify_ack(struct scsi_qla_host *vha,
+ imm_ntfy_from_isp_t *ntfy,
+ uint32_t add_flags, uint16_t resp_code, int resp_code_valid,
+ uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan)
+{
+ struct qla_hw_data *ha = vha->hw;
+ request_t *pkt;
+ nack_to_isp_t *nack;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe007, "Sending NOTIFY_ACK (ha=%p)\n", ha);
+
+ /* Send marker if required */
+ if (qla_tgt_issue_marker(vha, 1) != QLA_SUCCESS)
+ return;
+
+ pkt = (request_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;
+ }
+
+ if (ha->qla_tgt != NULL)
+ ha->qla_tgt->notify_ack_expected++;
+
+ pkt->entry_type = NOTIFY_ACK_TYPE;
+ pkt->entry_count = 1;
+
+ nack = (nack_to_isp_t *)pkt;
+ nack->ox_id = ntfy->ox_id;
+
+ nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
+ if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
+ nack->u.isp24.flags = ntfy->u.isp24.flags &
+ __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
+ }
+ nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
+ nack->u.isp24.status = ntfy->u.isp24.status;
+ nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
+ nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
+ nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
+ nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
+ nack->u.isp24.srr_flags = cpu_to_le16(srr_flags);
+ nack->u.isp24.srr_reject_code = srr_reject_code;
+ nack->u.isp24.srr_reject_code_expl = srr_explan;
+ nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
+
+ ql_dbg(ql_dbg_tgt_pkt, vha, 0xe201,
+ "qla_target(%d): Sending 24xx Notify Ack %d\n",
+ vha->vp_idx, nack->u.isp24.status);
+
+ qla2x00_start_iocbs(vha, vha->req);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_24xx_send_abts_resp(struct scsi_qla_host *vha,
+ abts_recv_from_24xx_t *abts, uint32_t status,
+ bool ids_reversed)
+{
+ struct qla_hw_data *ha = vha->hw;
+ abts_resp_to_24xx_t *resp;
+ uint32_t f_ctl;
+ uint8_t *p;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe008, "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 = (abts_resp_to_24xx_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_start_iocbs(vha, vha->req);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_24xx_retry_term_exchange(struct scsi_qla_host *vha,
+ abts_resp_from_24xx_fw_t *entry)
+{
+ ctio7_to_24xx_t *ctio;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe009, "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_to_24xx_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->entry_type = CTIO_TYPE7;
+ ctio->entry_count = 1;
+ ctio->nport_handle = entry->nport_handle;
+ ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+ ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio->vp_index = vha->vp_idx;
+ ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0];
+ ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1];
+ ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2];
+ ctio->exchange_addr = entry->exchange_addr_to_abort;
+ ctio->u.status1.flags =
+ __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
+ ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id;
+
+ qla2x00_start_iocbs(vha, vha->req);
+
+ qla_tgt_24xx_send_abts_resp(vha, (abts_recv_from_24xx_t *)entry,
+ FCP_TMF_CMPL, true);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int __qla_tgt_24xx_handle_abts(struct scsi_qla_host *vha,
+ abts_recv_from_24xx_t *abts, struct qla_tgt_sess *sess)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_mgmt_cmd *mcmd;
+ int rc;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe112, "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->tgt_ops->handle_tmr(mcmd, 0, TMR_ABORT_TASK,
+ abts->exchange_addr_to_abort);
+ if (rc != 0) {
+ printk(KERN_ERR "qla_target(%d): tgt_ops->handle_tmr()"
+ " failed: %d", vha->vp_idx, rc);
+ mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_24xx_handle_abts(struct scsi_qla_host *vha,
+ abts_recv_from_24xx_t *abts)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_sess *sess;
+ uint32_t tag = abts->exchange_addr_to_abort;
+ uint8_t s_id[3];
+ int rc;
+
+ if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) {
+ printk(KERN_ERR "qla_target(%d): ABTS: Abort Sequence not "
+ "supported\n", vha->vp_idx);
+ qla_tgt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+ return;
+ }
+
+ if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe113, "qla_target(%d): ABTS: Unknown Exchange "
+ "Address received\n", vha->vp_idx);
+ qla_tgt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+ return;
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe114, "qla_target(%d): task abort (s_id=%x:%x:%x, "
+ "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2],
+ abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag,
+ le32_to_cpu(abts->fcp_hdr_le.parameter));
+
+ s_id[0] = abts->fcp_hdr_le.s_id[2];
+ s_id[1] = abts->fcp_hdr_le.s_id[1];
+ s_id[2] = abts->fcp_hdr_le.s_id[0];
+
+ sess = ha->tgt_ops->find_sess_by_s_id(vha, s_id);
+ if (!sess) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe115, "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;
+ qla_tgt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+ }
+ return;
+ }
+
+ rc = __qla_tgt_24xx_handle_abts(vha, abts, sess);
+ if (rc != 0) {
+ printk(KERN_ERR "qla_target(%d): __qla_tgt_24xx_handle_abts() failed: %d\n",
+ vha->vp_idx, rc);
+ qla_tgt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false);
+ return;
+ }
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha,
+ struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code)
+{
+ atio_from_isp_t *atio = &mcmd->orig_iocb.atio;
+ ctio7_to_24xx_t *ctio;
+
+ ql_dbg(ql_dbg_tgt, ha, 0xe00a, "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_to_24xx_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->entry_type = CTIO_TYPE7;
+ ctio->entry_count = 1;
+ ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+ ctio->nport_handle = mcmd->sess->loop_id;
+ ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio->vp_index = ha->vp_idx;
+ ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
+ ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
+ ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
+ ctio->exchange_addr = atio->u.isp24.exchange_addr;
+ ctio->u.status1.flags = (atio->u.isp24.attr << 9) | __constant_cpu_to_le16(
+ CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS);
+ ctio->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
+ ctio->u.status1.scsi_status = __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID);
+ ctio->u.status1.response_len = __constant_cpu_to_le16(8);
+ ((uint32_t *)ctio->u.status1.sense_data)[0] = cpu_to_be32(resp_code);
+
+ qla2x00_start_iocbs(ha, ha->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 = mcmd->sess->vha;
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe116, "TM response mcmd"
+ " (%p) status %#x state %#x", mcmd, mcmd->fc_tm_rsp,
+ mcmd->flags);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (mcmd->flags == QLA24XX_MGMT_SEND_NACK)
+ qla_tgt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy,
+ 0, 0, 0, 0, 0, 0);
+ else {
+ if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK)
+ qla_tgt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts,
+ mcmd->fc_tm_rsp, false);
+ else
+ qla_tgt_24xx_send_task_mgmt_ctio(vha, mcmd, mcmd->fc_tm_rsp);
+ }
+ /*
+ * Make the callback for ->free_mcmd() to queue_work() and invoke
+ * target_put_sess_cmd() to drop cmd_kref to 1. The final
+ * target_put_sess_cmd() call will be made from TFO->check_stop_free()
+ * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd
+ * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() ->
+ * qla_tgt_xmit_tm_rsp() returns here..
+ */
+ ha->tgt_ops->free_mcmd(mcmd);
+ 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)
+{
+ struct qla_tgt_cmd *cmd = prm->cmd;
+
+ BUG_ON(cmd->sg_cnt == 0);
+
+ prm->sg = (struct scatterlist *)cmd->sg;
+ prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg,
+ cmd->sg_cnt, cmd->dma_data_direction);
+ if (unlikely(prm->seg_cnt == 0))
+ goto out_err;
+
+ prm->cmd->sg_mapped = 1;
+
+ /*
+ * If greater than four sg entries then we need to allocate
+ * the continuation entries
+ */
+ if (prm->seg_cnt > prm->tgt->datasegs_per_cmd)
+ prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - prm->tgt->datasegs_per_cmd,
+ prm->tgt->datasegs_per_cont);
+
+ ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe00c, "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)) {
+ cnt = (uint16_t)RD_REG_DWORD(®->isp24.req_q_out);
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe00d, "Request ring circled: cnt=%d, "
+ "vha->->ring_index=%d, vha->req->cnt=%d, req_cnt=%d\n",
+ cnt, vha->req->ring_index, vha->req->cnt, req_cnt);
+ if (vha->req->ring_index < cnt)
+ vha->req->cnt = cnt - vha->req->ring_index;
+ else
+ vha->req->cnt = vha->req->length -
+ (vha->req->ring_index - cnt);
+ }
+
+ if (unlikely(vha->req->cnt < (req_cnt + 2))) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe00e, "qla_target(%d): There is no room in the "
+ "request ring: vha->req->ring_index=%d, vha->req->cnt=%d, "
+ "req_cnt=%d\n", vha->vp_idx, vha->req->ring_index,
+ vha->req->cnt, req_cnt);
+ return -EAGAIN;
+ }
+ vha->req->cnt -= req_cnt;
+
+ return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static inline void *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 int qla_tgt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm, struct scsi_qla_host *vha)
+{
+ uint32_t h;
+ ctio7_to_24xx_t *pkt;
+ struct qla_hw_data *ha = vha->hw;
+ atio_from_isp_t *atio = &prm->cmd->atio;
+
+ pkt = (ctio7_to_24xx_t *)vha->req->ring_ptr;
+ prm->pkt = pkt;
+ memset(pkt, 0, sizeof(*pkt));
+
+ pkt->entry_type = CTIO_TYPE7;
+ pkt->entry_count = (uint8_t)prm->req_cnt;
+ pkt->vp_index = vha->vp_idx;
+
+ h = 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.
+ */
+ return -EAGAIN;
+ } else
+ ha->cmds[h-1] = prm->cmd;
+
+ pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK;
+ pkt->nport_handle = prm->cmd->loop_id;
+ pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+ pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
+ pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
+ pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
+ pkt->exchange_addr = atio->u.isp24.exchange_addr;
+ pkt->u.status0.flags |= (atio->u.isp24.attr << 9);
+ pkt->u.status0.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
+ pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset);
+
+ ql_dbg(ql_dbg_tgt_pkt, vha, 0xe203, "qla_target(%d): handle(cmd) -> %08x, "
+ "timeout %d, ox_id %#x\n", vha->vp_idx, pkt->handle,
+ QLA_TGT_TIMEOUT, le16_to_cpu(pkt->u.status0.ox_id));
+ return 0;
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. We have already made sure
+ * that there is sufficient amount of request entries to not drop it.
+ */
+static void 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));
+
+ ql_dbg(ql_dbg_tgt_sgl, vha, 0xe300, "S/G Segment Cont. phys_addr="
+ "%llx:%llx, len=%d\n",
+ (long long unsigned int)pci_dma_hi32(sg_dma_address(prm->sg)),
+ (long long unsigned int)pci_dma_lo32(sg_dma_address(prm->sg)),
+ (int)sg_dma_len(prm->sg));
+
+ prm->sg = sg_next(prm->sg);
+ }
+ }
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. We have already made sure
+ * that there is sufficient amount of request entries to not drop it.
+ */
+static void qla_tgt_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_to_24xx_t *pkt24 = (ctio7_to_24xx_t *)prm->pkt;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe00f,
+ "iocb->scsi_status=%x, iocb->flags=%x\n",
+ le16_to_cpu(pkt24->u.status0.scsi_status),
+ le16_to_cpu(pkt24->u.status0.flags));
+
+ pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen);
+
+ /* Setup packet address segment pointer */
+ dword_ptr = pkt24->u.status0.dseg_0_address;
+
+ /* Set total data segment count */
+ if (prm->seg_cnt)
+ pkt24->dseg_count = cpu_to_le16(prm->seg_cnt);
+
+ if (prm->seg_cnt == 0) {
+ /* No data transfer */
+ *dword_ptr++ = 0;
+ *dword_ptr = 0;
+ return;
+ }
+
+ /* If scatter gather */
+ ql_dbg(ql_dbg_tgt_sgl, vha, 0xe303, "%s", "Building S/G data segments...");
+
+ /* Load command entry data segments */
+ for (cnt = 0;
+ (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt;
+ cnt++, prm->seg_cnt--) {
+ *dword_ptr++ =
+ cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg)));
+ if (enable_64bit_addressing) {
+ *dword_ptr++ =
+ cpu_to_le32(pci_dma_hi32(
+ sg_dma_address(prm->sg)));
+ }
+ *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg));
+
+ ql_dbg(ql_dbg_tgt_sgl, vha, 0xe304, "S/G Segment phys_addr="
+ "%llx:%llx, len=%d\n",
+ (long long unsigned int)pci_dma_hi32(sg_dma_address(
+ prm->sg)),
+ (long long unsigned int)pci_dma_lo32(sg_dma_address(
+ prm->sg)),
+ (int)sg_dma_len(prm->sg));
+
+ prm->sg = sg_next(prm->sg);
+ }
+
+ 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)) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe118, "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;
+
+ qla_tgt_send_term_exchange(vha, cmd, &cmd->atio, 0);
+
+ /* !! At this point cmd could be already freed !! */
+ return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED;
+ }
+
+ ql_dbg(ql_dbg_tgt_pkt, vha, 0xe205, "qla_target(%d): tag=%u\n", vha->vp_idx, cmd->tag);
+
+ prm->cmd = cmd;
+ prm->tgt = tgt;
+ prm->rq_result = scsi_status;
+ prm->sense_buffer = &cmd->sense_buffer[0];
+ prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER;
+ prm->sg = NULL;
+ prm->seg_cnt = -1;
+ prm->req_cnt = 1;
+ prm->add_status_pkt = 0;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe010, "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;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe011, "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;
+ ql_dbg(ql_dbg_tgt, vha, 0xe012, "Residual underflow: %d (tag %d, "
+ "op %x, bufflen %d, rq_result %x)\n",
+ prm->residual, cmd->tag,
+ se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
+ cmd->bufflen, prm->rq_result);
+ prm->rq_result |= SS_RESIDUAL_UNDER;
+ } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
+ prm->residual = se_cmd->residual_count;
+ ql_dbg(ql_dbg_tgt, vha, 0xe013, "Residual overflow: %d (tag %d, "
+ "op %x, bufflen %d, rq_result %x)\n",
+ prm->residual, cmd->tag,
+ se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0,
+ cmd->bufflen, prm->rq_result);
+ prm->rq_result |= SS_RESIDUAL_OVER;
+ }
+
+ if (xmit_type & QLA_TGT_XMIT_STATUS) {
+ /*
+ * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be ignored
+ * in *xmit_response() below
+ */
+ if (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)++;
+ }
+ }
+ }
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe014, "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;
+}
+
+#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;
+ ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xe119, "Dropping cmd %p (tag %d) status",
+ cmd, cmd->tag);
+ }
+#endif
+ /*
+ * It's currently not possible to simulate SRRs for FCP_WRITE without
+ * a physical link layer failure, so don't even try here..
+ */
+ if (cmd->dma_data_direction != DMA_FROM_DEVICE)
+ return;
+
+ if (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;
+
+ ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xe11a, "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;
+
+ ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xe11b, "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_set_data_offset(cmd, offset)) {
+ ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xe11c, "qla_tgt_set_data_offset()"
+ " failed (tag %d)", cmd->tag);
+ }
+ }
+}
+#else
+static inline void qla_tgt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type) {}
+#endif
+
+static void qla_tgt_24xx_init_ctio_to_isp(ctio7_to_24xx_t *ctio,
+ struct qla_tgt_prm *prm)
+{
+ prm->sense_buffer_len = min((uint32_t)prm->sense_buffer_len,
+ (uint32_t)sizeof(ctio->u.status1.sense_data));
+ ctio->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS);
+ if (qla_tgt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) {
+ ctio->u.status0.flags |= __constant_cpu_to_le16(
+ CTIO7_FLAGS_EXPLICIT_CONFORM |
+ CTIO7_FLAGS_CONFORM_REQ);
+ }
+ ctio->u.status0.residual = cpu_to_le32(prm->residual);
+ ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result);
+ if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) {
+ int i;
+
+ if (qla_tgt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) {
+ if (prm->cmd->se_cmd.scsi_status != 0) {
+ ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe018,
+ "Skipping EXPLICIT_CONFORM and CTIO7_FLAGS_CONFORM_REQ"
+ " for FCP READ w/ non GOOD status\n");
+ goto skip_explict_conf;
+ }
+ ctio->u.status1.flags |= __constant_cpu_to_le16(
+ CTIO7_FLAGS_EXPLICIT_CONFORM |
+ CTIO7_FLAGS_CONFORM_REQ);
+ }
+skip_explict_conf:
+ ctio->u.status1.flags &= ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
+ ctio->u.status1.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
+ ctio->u.status1.scsi_status |= __constant_cpu_to_le16(SS_SENSE_LEN_VALID);
+ ctio->u.status1.sense_length = cpu_to_le16(prm->sense_buffer_len);
+ for (i = 0; i < prm->sense_buffer_len/4; i++)
+ ((uint32_t *)ctio->u.status1.sense_data)[i] =
+ cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]);
+#if 0
+ if (unlikely((prm->sense_buffer_len % 4) != 0)) {
+ static int q;
+ if (q < 10) {
+ printk(KERN_INFO "qla_target(%d): %d bytes of sense "
+ "lost", prm->tgt->ha->vp_idx,
+ prm->sense_buffer_len % 4);
+ q++;
+ }
+ }
+#endif
+ } else {
+ ctio->u.status1.flags &= ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0);
+ ctio->u.status1.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1);
+ ctio->u.status1.sense_length = 0;
+ memset(ctio->u.status1.sense_data, 0, sizeof(ctio->u.status1.sense_data));
+ }
+
+ /* Sense with len > 24, is it possible ??? */
+}
+
+/*
+ * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * QLA_TGT_XMIT_STATUS
+ * for >= 24xx silicon
+ */
+int qla_tgt_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_to_24xx_t *pkt;
+ struct qla_tgt_prm prm;
+ uint32_t full_req_cnt = 0;
+ unsigned long flags = 0;
+ int res;
+
+ memset(&prm, 0, sizeof(prm));
+ qla_tgt_check_srr_debug(cmd, &xmit_type);
+
+ ql_dbg(ql_dbg_tgt, cmd->vha, 0xe017, "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);
+
+ 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;
+ }
+
+ 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))
+ goto out_unmap_unlock;
+
+ res = qla_tgt_24xx_build_ctio_pkt(&prm, vha);
+ if (unlikely(res != 0))
+ goto out_unmap_unlock;
+
+
+ pkt = (ctio7_to_24xx_t *)prm.pkt;
+
+ if (qla_tgt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) {
+ pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN |
+ CTIO7_FLAGS_STATUS_MODE_0);
+
+ qla_tgt_load_data_segments(&prm, vha);
+
+ if (prm.add_status_pkt == 0) {
+ if (xmit_type & QLA_TGT_XMIT_STATUS) {
+ pkt->u.status0.scsi_status = cpu_to_le16(prm.rq_result);
+ pkt->u.status0.residual = cpu_to_le32(prm.residual);
+ pkt->u.status0.flags |= __constant_cpu_to_le16(
+ CTIO7_FLAGS_SEND_STATUS);
+ if (qla_tgt_need_explicit_conf(ha, cmd, 0)) {
+ pkt->u.status0.flags |= __constant_cpu_to_le16(
+ CTIO7_FLAGS_EXPLICIT_CONFORM |
+ CTIO7_FLAGS_CONFORM_REQ);
+ }
+ }
+
+ } else {
+ /*
+ * We have already made sure that there is sufficient
+ * amount of request entries to not drop HW lock in
+ * req_pkt().
+ */
+ ctio7_to_24xx_t *ctio =
+ (ctio7_to_24xx_t *)qla_tgt_get_req_pkt(vha);
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe019, "Building additional"
+ " status packet\n");
+
+ memcpy(ctio, pkt, sizeof(*ctio));
+ ctio->entry_count = 1;
+ ctio->dseg_count = 0;
+ ctio->u.status1.flags &= ~__constant_cpu_to_le16(
+ CTIO7_FLAGS_DATA_IN);
+
+ /* Real finish is ctio_m1's finish */
+ pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK;
+ pkt->u.status0.flags |= __constant_cpu_to_le16(
+ CTIO7_FLAGS_DONT_RET_CTIO);
+ qla_tgt_24xx_init_ctio_to_isp((ctio7_to_24xx_t *)ctio,
+ &prm);
+ printk("Status CTIO7: %p\n", ctio);
+ }
+ } else
+ qla_tgt_24xx_init_ctio_to_isp(pkt, &prm);
+
+
+ cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe01a, "Xmitting CTIO7 response pkt for 24xx:"
+ " %p scsi_status: 0x%02x\n", pkt, scsi_status);
+
+ qla2x00_start_iocbs(vha, vha->req);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return 0;
+
+out_unmap_unlock:
+ if (cmd->sg_mapped)
+ qla_tgt_unmap_sg(vha, cmd);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return res;
+}
+EXPORT_SYMBOL(qla_tgt_xmit_response);
+
+int qla_tgt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
+{
+ ctio7_to_24xx_t *pkt;
+ struct scsi_qla_host *vha = cmd->vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = cmd->tgt;
+ struct qla_tgt_prm prm;
+ unsigned long flags;
+ int res = 0;
+
+ memset(&prm, 0, sizeof(prm));
+ prm.cmd = cmd;
+ prm.tgt = tgt;
+ prm.sg = NULL;
+ prm.req_cnt = 1;
+
+ /* Send marker if required */
+ if (qla_tgt_issue_marker(vha, 0) != QLA_SUCCESS)
+ return -EIO;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe01b, "CTIO_start: vha(%d)", (int)vha->vp_idx);
+
+ /* Calculate number of entries and segments required */
+ if (qla_tgt_pci_map_calc_cnt(&prm) != 0)
+ return -EAGAIN;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ /* Does F/W have an IOCBs for this request */
+ res = qla_tgt_check_reserve_free_req(vha, prm.req_cnt);
+ if (res != 0)
+ goto out_unlock_free_unmap;
+
+ res = qla_tgt_24xx_build_ctio_pkt(&prm, vha);
+ if (unlikely(res != 0))
+ goto out_unlock_free_unmap;
+ pkt = (ctio7_to_24xx_t *)prm.pkt;
+ pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT |
+ CTIO7_FLAGS_STATUS_MODE_0);
+ qla_tgt_load_data_segments(&prm, vha);
+
+ cmd->state = QLA_TGT_STATE_NEED_DATA;
+
+ qla2x00_start_iocbs(vha, vha->req);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ return res;
+
+out_unlock_free_unmap:
+ if (cmd->sg_mapped)
+ 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 */
+/* This function sends the appropriate CTIO to ISP 2xxx or 24xx */
+static int __qla_tgt_send_term_exchange(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
+ atio_from_isp_t *atio)
+{
+ ctio7_to_24xx_t *ctio24;
+ struct qla_hw_data *ha = vha->hw;
+ request_t *pkt;
+ int ret = 0;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha);
+
+ pkt = (request_t *)qla2x00_req_pkt(vha);
+ if (pkt == NULL) {
+ printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+ "request packet\n", vha->vp_idx, __func__);
+ return -ENOMEM;
+ }
+
+ if (cmd != NULL) {
+ if (cmd->state < QLA_TGT_STATE_PROCESSED) {
+ printk(KERN_ERR "qla_target(%d): Terminating cmd %p with "
+ "incorrect state %d\n", vha->vp_idx, cmd,
+ cmd->state);
+ } else
+ ret = 1;
+ }
+
+ pkt->entry_count = 1;
+ pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+
+ ctio24 = (ctio7_to_24xx_t *)pkt;
+ ctio24->entry_type = CTIO_TYPE7;
+ ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED;
+ ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio24->vp_index = vha->vp_idx;
+ ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
+ ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
+ ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
+ ctio24->exchange_addr = atio->u.isp24.exchange_addr;
+ ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | __constant_cpu_to_le16(
+ CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_TERMINATE);
+ ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
+
+ /* Most likely, it isn't needed */
+ ctio24->u.status1.residual = get_unaligned((uint32_t *)
+ &atio->u.isp24.fcp_cmnd.add_cdb[atio->u.isp24.fcp_cmnd.add_cdb_len]);
+ if (ctio24->u.status1.residual != 0)
+ ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
+
+ qla2x00_start_iocbs(vha, vha->req);
+ return ret;
+}
+
+static void qla_tgt_send_term_exchange(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd,
+ atio_from_isp_t *atio, int ha_locked)
+{
+ unsigned long flags;
+ int rc;
+
+ if (qla_tgt_issue_marker(vha, ha_locked) < 0)
+ return;
+
+ if (ha_locked) {
+ rc = __qla_tgt_send_term_exchange(vha, cmd, atio);
+ goto done;
+ }
+ spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+ rc = __qla_tgt_send_term_exchange(vha, cmd, atio);
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+done:
+ if (rc == 1) {
+ if (!ha_locked && !in_interrupt())
+ msleep(250); /* just in case */
+
+ vha->hw->tgt_ops->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 qla_tgt_srr_ctio *sc;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+ struct qla_tgt_srr_imm *imm;
+
+ tgt->ctio_srr_id++;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe11d, "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;
+ }
+
+ sc = kzalloc(sizeof(*sc), GFP_ATOMIC);
+ if (sc != NULL) {
+ sc->cmd = cmd;
+ /* IRQ is already OFF */
+ spin_lock(&tgt->srr_lock);
+ sc->srr_id = tgt->ctio_srr_id;
+ list_add_tail(&sc->srr_list_entry,
+ &tgt->srr_ctio_list);
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe11e, "CTIO SRR %p added (id %d)\n",
+ sc, sc->srr_id);
+ if (tgt->imm_srr_id == tgt->ctio_srr_id) {
+ int found = 0;
+ list_for_each_entry(imm, &tgt->srr_imm_list,
+ srr_list_entry) {
+ if (imm->srr_id == sc->srr_id) {
+ found = 1;
+ break;
+ }
+ }
+ if (found) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe11f,
+ "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 qla_tgt_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) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe120, "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)
+{
+ int term = 0;
+
+ if (ctio != NULL) {
+ ctio7_from_24xx_t *c = (ctio7_from_24xx_t *)ctio;
+ term = !(c->flags &
+ __constant_cpu_to_le16(OF_TERM_EXCH));
+ } else
+ term = 1;
+
+ if (term)
+ qla_tgt_send_term_exchange(vha, cmd, &cmd->atio, 1);
+
+ return term;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static inline struct qla_tgt_cmd *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_tgt_cmd *cmd = NULL;
+
+ /* Clear out internal marks */
+ handle &= ~(CTIO_COMPLETION_HANDLE_MARK | CTIO_INTERMEDIATE_HANDLE_MARK);
+
+ if (handle != QLA_TGT_NULL_HANDLE) {
+ if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe01e, "%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) {
+ /* 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;
+ }
+
+ 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;
+
+ ql_dbg(ql_dbg_tgt_pkt, vha, 0xe206, "qla_target(%d): handle(ctio %p status"
+ " %#x) <- %08x\n", vha->vp_idx, ctio, status, handle);
+
+ if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) {
+ /* That could happen only in case of an error/reset/abort */
+ if (status != CTIO_SUCCESS) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe121, "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) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd);
+ } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
+ int rx_status = 0;
+
+ cmd->state = QLA_TGT_STATE_DATA_IN;
+
+ if (unlikely(status != CTIO_SUCCESS))
+ rx_status = -EIO;
+ else
+ cmd->write_data_transferred = 1;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe020, "Data received, context %x,"
+ " rx_status %d\n", 0x0, rx_status);
+
+ ha->tgt_ops->handle_data(cmd);
+ return;
+ } else if (cmd->state == QLA_TGT_STATE_ABORTED) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe122, "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)) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe123, "Finishing failed CTIO\n");
+ dump_stack();
+ }
+
+ ha->tgt_ops->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)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe021, "CTIO, but target mode not enabled"
+ " (ha %d %p handle %#x)", vha->vp_idx, ha, handle);
+ return;
+ }
+
+ tgt->irq_cmd_count++;
+ 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 = MSG_SIMPLE_TAG;
+ break;
+ case ATIO_HEAD_OF_QUEUE:
+ fcp_task_attr = MSG_HEAD_TAG;
+ break;
+ case ATIO_ORDERED_QUEUE:
+ fcp_task_attr = MSG_ORDERED_TAG;
+ break;
+ case ATIO_ACA_QUEUE:
+ fcp_task_attr = MSG_ACA_TAG;
+ break;
+ case ATIO_UNTAGGED:
+ fcp_task_attr = MSG_SIMPLE_TAG;
+ break;
+ default:
+ printk(KERN_WARNING "qla_target: unknown task code %x, use "
+ "ORDERED instead\n", task_codes);
+ fcp_task_attr = MSG_ORDERED_TAG;
+ break;
+ }
+
+ return fcp_task_attr;
+}
+
+static struct qla_tgt_sess *qla_tgt_make_local_sess(struct scsi_qla_host *,
+ uint8_t *);
+/*
+ * Process context for I/O path into tcm_qla2xxx code
+ */
+static void qla_tgt_do_work(struct work_struct *work)
+{
+ struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
+ scsi_qla_host_t *vha = cmd->vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+ struct qla_tgt_sess *sess = cmd->sess;
+ atio_from_isp_t *atio = &cmd->atio;
+ unsigned char *cdb;
+ unsigned long flags;
+ uint32_t data_length;
+ int ret, fcp_task_attr, data_dir, bidi = 0;;
+
+ if (tgt->tgt_stop)
+ goto out_term;
+
+ if (!sess) {
+ uint8_t *s_id = NULL;
+
+ s_id = atio->u.isp24.fcp_hdr.s_id;
+
+ mutex_lock(&ha->tgt_mutex);
+ cmd->sess = sess = qla_tgt_make_local_sess(vha, s_id);
+ /* sess has got an extra creation ref */
+ mutex_unlock(&ha->tgt_mutex);
+
+ if (!sess)
+ goto out_term;
+ cmd->loop_id = sess->loop_id;
+ }
+
+ if (tgt->tgt_stop)
+ goto out_term;
+
+ cdb = &atio->u.isp24.fcp_cmnd.cdb[0];
+ cmd->tag = atio->u.isp24.exchange_addr;
+ cmd->unpacked_lun = scsilun_to_int(
+ (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun);
+
+ if (atio->u.isp24.fcp_cmnd.rddata &&
+ atio->u.isp24.fcp_cmnd.wrdata) {
+ bidi = 1;
+ data_dir = DMA_TO_DEVICE;
+ } else if (atio->u.isp24.fcp_cmnd.rddata)
+ data_dir = DMA_FROM_DEVICE;
+ else if (atio->u.isp24.fcp_cmnd.wrdata)
+ data_dir = DMA_TO_DEVICE;
+ else
+ data_dir = DMA_NONE;
+
+ fcp_task_attr = qla_tgt_get_fcp_task_attr(
+ atio->u.isp24.fcp_cmnd.task_attr);
+ data_length = be32_to_cpu(get_unaligned((uint32_t *)
+ &atio->u.isp24.fcp_cmnd.add_cdb[
+ atio->u.isp24.fcp_cmnd.add_cdb_len]));
+
+ ql_dbg(ql_dbg_tgt_pkt, vha, 0xe207, "qla_target: START qla command: %p"
+ " lun: 0x%04x (tag %d)\n", cmd, cmd->unpacked_lun, cmd->tag);
+
+ ret = vha->hw->tgt_ops->handle_cmd(vha, cmd, cdb, data_length,
+ fcp_task_attr, data_dir, bidi);
+ if (ret != 0)
+ goto out_term;
+ /*
+ * Drop extra session reference from qla_tgt_handle_cmd_for_atio*(
+ */
+ ha->tgt_ops->put_sess(sess);
+ return;
+
+out_term:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe14d, "Terminating work cmd %p", cmd);
+ /*
+ * cmd has not sent to target yet, so pass NULL as the second argument
+ */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla_tgt_send_term_exchange(vha, NULL, &cmd->atio, 1);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ if (sess)
+ ha->tgt_ops->put_sess(sess);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_handle_cmd_for_atio(struct scsi_qla_host *vha,
+ atio_from_isp_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)) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe124, "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;
+ }
+
+ INIT_LIST_HEAD(&cmd->cmd_list);
+
+ memcpy(&cmd->atio, atio, sizeof(*atio));
+ cmd->state = QLA_TGT_STATE_NEW;
+ cmd->tgt = ha->qla_tgt;
+ cmd->vha = vha;
+
+ sess = ha->tgt_ops->find_sess_by_s_id(vha,
+ atio->u.isp24.fcp_hdr.s_id);
+ if (unlikely(!sess)) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe125, "qla_target(%d):"
+ " Unable to find wwn login (s_id %x:%x:%x),"
+ " trying to create it manually\n", vha->vp_idx,
+ atio->u.isp24.fcp_hdr.s_id[0],
+ atio->u.isp24.fcp_hdr.s_id[1],
+ atio->u.isp24.fcp_hdr.s_id[2]);
+
+ if (atio->u.raw.entry_count > 1) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe127, "Dropping multy entry"
+ " cmd %p\n", cmd);
+ goto out_free_cmd;
+ }
+ goto out_sched;
+ }
+
+ if (sess->tearing_down || tgt->tgt_stop)
+ goto out_free_cmd;
+
+ cmd->sess = sess;
+ cmd->loop_id = sess->loop_id;
+ cmd->conf_compl_supported = sess->conf_compl_supported;
+ /*
+ * Get the extra kref_get() before dropping qla_hw_data->hardware_lock,
+ * and call kref_put() in qla_tgt_do_work() process context to drop the
+ * extra reference.
+ */
+ kref_get(&sess->se_sess->sess_kref);
+
+out_sched:
+ INIT_WORK(&cmd->work, qla_tgt_do_work);
+ queue_work(qla_tgt_wq, &cmd->work);
+ return 0;
+
+out_free_cmd:
+ 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.imm_ntfy, iocb,
+ sizeof(mcmd->orig_iocb.imm_ntfy));
+ }
+ mcmd->tmr_func = fn;
+ mcmd->flags = flags;
+
+ switch (fn) {
+ case QLA_TGT_CLEAR_ACA:
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0xe400, "qla_target(%d): CLEAR_ACA received\n",
+ sess->vha->vp_idx);
+ tmr_func = TMR_CLEAR_ACA;
+ break;
+
+ case QLA_TGT_TARGET_RESET:
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0xe401, "qla_target(%d): TARGET_RESET received\n",
+ sess->vha->vp_idx);
+ tmr_func = TMR_TARGET_WARM_RESET;
+ break;
+
+ case QLA_TGT_LUN_RESET:
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0xe402, "qla_target(%d): LUN_RESET received\n",
+ sess->vha->vp_idx);
+ tmr_func = TMR_LUN_RESET;
+ break;
+
+ case QLA_TGT_CLEAR_TS:
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0xe403, "qla_target(%d): CLEAR_TS received\n",
+ sess->vha->vp_idx);
+ tmr_func = TMR_CLEAR_TASK_SET;
+ break;
+
+ case QLA_TGT_ABORT_TS:
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0xe405, "qla_target(%d): ABORT_TS received\n",
+ sess->vha->vp_idx);
+ tmr_func = TMR_ABORT_TASK_SET;
+ break;
+#if 0
+ case QLA_TGT_ABORT_ALL:
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0xe406, "qla_target(%d): Doing ABORT_ALL_TASKS\n",
+ sess->vha->vp_idx);
+ tmr_func = 0;
+ break;
+
+ case QLA_TGT_ABORT_ALL_SESS:
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0xe407, "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n",
+ sess->vha->vp_idx);
+ tmr_func = 0;
+ break;
+
+ case QLA_TGT_NEXUS_LOSS_SESS:
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0xe408, "qla_target(%d): Doing NEXUS_LOSS_SESS\n",
+ sess->vha->vp_idx);
+ tmr_func = 0;
+ break;
+
+ case QLA_TGT_NEXUS_LOSS:
+ ql_dbg(ql_dbg_tgt_tmr, vha, 0xe409, "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->tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0);
+ if (res != 0) {
+ printk(KERN_ERR "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n",
+ sess->vha->vp_idx, res);
+ mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb)
+{
+ atio_from_isp_t *a = (atio_from_isp_t *)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;
+
+ lun = a->u.isp24.fcp_cmnd.lun;
+ lun_size = sizeof(a->u.isp24.fcp_cmnd.lun);
+ fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
+ sess = ha->tgt_ops->find_sess_by_s_id(vha,
+ a->u.isp24.fcp_hdr.s_id);
+ unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
+
+ if (!sess) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe128, "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,
+ sizeof(atio_from_isp_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,
+ imm_ntfy_from_isp_t *iocb, struct qla_tgt_sess *sess)
+{
+ atio_from_isp_t *a = (atio_from_isp_t *)iocb;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_mgmt_cmd *mcmd;
+ uint32_t lun, unpacked_lun;
+ int rc;
+
+ mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC);
+ if (mcmd == NULL) {
+ 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.imm_ntfy, iocb, sizeof(mcmd->orig_iocb.imm_ntfy));
+
+ lun = a->u.isp24.fcp_cmnd.lun;
+ unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
+
+ rc = ha->tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK,
+ le16_to_cpu(iocb->u.isp2x.seq_id));
+ if (rc != 0) {
+ printk(KERN_ERR "qla_target(%d): tgt_ops->handle_tmr()"
+ " failed: %d\n", vha->vp_idx, rc);
+ mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool);
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+static int qla_tgt_abort_task(struct scsi_qla_host *vha, imm_ntfy_from_isp_t *iocb)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_sess *sess;
+ int loop_id, res;
+
+ loop_id = GET_TARGET_ID(ha, (atio_from_isp_t *)iocb);
+
+ sess = ha->tgt_ops->find_sess_by_loop_id(vha, loop_id);
+ if (sess == NULL) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe129, "qla_target(%d): task abort for unexisting "
+ "session\n", vha->vp_idx);
+ res = qla_tgt_sched_sess_work(ha->qla_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 qla_tgt_24xx_handle_els(struct scsi_qla_host *vha,
+ imm_ntfy_from_isp_t *iocb)
+{
+ struct qla_hw_data *ha = vha->hw;
+ int res = 0;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe12a, "qla_target(%d): Port ID: 0x%02x:%02x:%02x"
+ " ELS opcode: 0x%02x\n", vha->vp_idx, iocb->u.isp24.port_id[0],
+ iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[2],
+ iocb->u.isp24.status_subcode);
+
+ switch (iocb->u.isp24.status_subcode) {
+ case ELS_PLOGI:
+ case ELS_FLOGI:
+ case ELS_PRLI:
+ case ELS_LOGO:
+ case ELS_PRLO:
+ res = 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) {
+ qla_tgt_send_notify_ack(vha, &tgt->link_reinit_iocb,
+ 0, 0, 0, 0, 0, 0);
+ tgt->link_reinit_iocb_pending = 0;
+ }
+ res = 1; /* send notify ack */
+ break;
+ }
+
+ default:
+ printk(KERN_ERR "qla_target(%d): Unsupported ELS command %x "
+ "received\n", vha->vp_idx, iocb->u.isp24.status_subcode);
+ res = qla_tgt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS);
+ break;
+ }
+
+ return res;
+}
+
+static int qla_tgt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset)
+{
+ struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL;
+ size_t first_offset = 0, rem_offset = offset, tmp = 0;
+ int i, sg_srr_cnt, bufflen = 0;
+
+ ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe305, "Entering qla_tgt_set_data_offset:"
+ " cmd: %p, cmd->sg: %p, cmd->sg_cnt: %u, direction: %d\n",
+ cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
+
+ /*
+ * FIXME: Reject non zero SRR relative offset until we can test
+ * this code properly.
+ */
+ printk("Rejecting non zero SRR rel_offs: %u\n", offset);
+ return -1;
+
+ if (!cmd->sg || !cmd->sg_cnt) {
+ printk(KERN_ERR "Missing cmd->sg or zero cmd->sg_cnt in"
+ " qla_tgt_set_data_offset\n");
+ return -EINVAL;
+ }
+ /*
+ * Walk the current cmd->sg list until we locate the new sg_srr_start
+ */
+ for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) {
+ ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe306, "sg[%d]: %p page: %p,"
+ " length: %d, offset: %d\n", i, sg, sg_page(sg),
+ sg->length, sg->offset);
+
+ if ((sg->length + tmp) > offset) {
+ first_offset = rem_offset;
+ sg_srr_start = sg;
+ ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe307, "Found matching sg[%d],"
+ " using %p as sg_srr_start, and using first_offset:"
+ " %lu\n", i, sg, first_offset);
+ break;
+ }
+ tmp += sg->length;
+ rem_offset -= sg->length;
+ }
+
+ if (!sg_srr_start) {
+ printk(KERN_ERR "Unable to locate sg_srr_start for offset: %u\n", offset);
+ return -EINVAL;
+ }
+ sg_srr_cnt = (cmd->sg_cnt - i);
+
+ sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL);
+ if (!sg_srr) {
+ printk(KERN_ERR "Unable to allocate sgp\n");
+ return -ENOMEM;
+ }
+ sg_init_table(sg_srr, sg_srr_cnt);
+ sgp = &sg_srr[0];
+ /*
+ * Walk the remaining list for sg_srr_start, mapping to the newly
+ * allocated sg_srr taking first_offset into account.
+ */
+ for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) {
+ if (first_offset) {
+ sg_set_page(sgp, sg_page(sg),
+ (sg->length - first_offset), first_offset);
+ first_offset = 0;
+ } else {
+ sg_set_page(sgp, sg_page(sg), sg->length, 0);
+ }
+ bufflen += sgp->length;
+
+ sgp = sg_next(sgp);
+ if (!sgp)
+ break;
+ }
+
+ cmd->sg = sg_srr;
+ cmd->sg_cnt = sg_srr_cnt;
+ cmd->bufflen = bufflen;
+ cmd->offset += offset;
+ cmd->free_sg = 1;
+
+ ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe308, "New cmd->sg: %p\n", cmd->sg);
+ ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe309, "New cmd->sg_cnt: %u\n", cmd->sg_cnt);
+ ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe30b, "New cmd->bufflen: %u\n", cmd->bufflen);
+ ql_dbg(ql_dbg_tgt_sgl, cmd->vha, 0xe30c, "New cmd->offset: %u\n", cmd->offset);
+
+ if (cmd->sg_cnt < 0)
+ BUG();
+
+ if (cmd->bufflen < 0)
+ BUG();
+
+ return 0;
+}
+
+static inline int qla_tgt_srr_adjust_data(struct qla_tgt_cmd *cmd,
+ uint32_t srr_rel_offs, int *xmit_type)
+{
+ int res = 0, rel_offs;
+
+ rel_offs = srr_rel_offs - cmd->offset;
+ ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xe12b, "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_set_data_offset(cmd, rel_offs);
+
+ return res;
+}
+
+/* No locks, thread context */
+static void qla_tgt_handle_srr(struct scsi_qla_host *vha, struct qla_tgt_srr_ctio *sctio,
+ struct qla_tgt_srr_imm *imm)
+{
+ imm_ntfy_from_isp_t *ntfy = (imm_ntfy_from_isp_t *)&imm->imm_ntfy;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_cmd *cmd = sctio->cmd;
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+ unsigned long flags;
+ int xmit_type = 0, resp = 0;
+ uint32_t offset;
+ uint16_t srr_ui;
+
+ offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs);
+ srr_ui = ntfy->u.isp24.srr_ui;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe12c, "SRR cmd %p, srr_ui %x\n",
+ cmd, srr_ui);
+
+ switch (srr_ui) {
+ case SRR_IU_STATUS:
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla_tgt_send_notify_ack(vha, ntfy,
+ 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ xmit_type = QLA_TGT_XMIT_STATUS;
+ resp = 1;
+ break;
+ case SRR_IU_DATA_IN:
+ if (!cmd->sg || !cmd->sg_cnt) {
+ printk(KERN_ERR "Unable to process SRR_IU_DATA_IN due to"
+ " missing cmd->sg, state: %d\n", cmd->state);
+ dump_stack();
+ goto out_reject;
+ }
+ if (se_cmd->scsi_status != 0) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe022, "Rejecting SRR_IU_DATA_IN"
+ " with non GOOD scsi_status\n");
+ goto out_reject;
+ }
+ cmd->bufflen = se_cmd->data_length;
+
+ if (qla_tgt_has_data(cmd)) {
+ if (qla_tgt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
+ goto out_reject;
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla_tgt_send_notify_ack(vha, ntfy,
+ 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ resp = 1;
+ } else {
+ 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;
+ }
+ break;
+ case SRR_IU_DATA_OUT:
+ if (!cmd->sg || !cmd->sg_cnt) {
+ printk(KERN_ERR "Unable to process SRR_IU_DATA_OUT due to"
+ " missing cmd->sg\n");
+ dump_stack();
+ goto out_reject;
+ }
+ if (se_cmd->scsi_status != 0) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe023, "Rejecting SRR_IU_DATA_OUT"
+ " with non GOOD scsi_status\n");
+ goto out_reject;
+ }
+ cmd->bufflen = se_cmd->data_length;
+
+ if (qla_tgt_has_data(cmd)) {
+ if (qla_tgt_srr_adjust_data(cmd, offset, &xmit_type) != 0)
+ goto out_reject;
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla_tgt_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;
+ }
+ break;
+ default:
+ printk(KERN_ERR "qla_target(%d): Unknown srr_ui value %x",
+ vha->vp_idx, srr_ui);
+ goto out_reject;
+ }
+
+ /* Transmit response in case of status and data-in cases */
+ if (resp) {
+ qla_tgt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
+ }
+
+ return;
+
+out_reject:
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ qla_tgt_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
+ qla_tgt_send_term_exchange(vha, cmd, &cmd->atio, 1);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+static void qla_tgt_reject_free_srr_imm(struct scsi_qla_host *vha, struct qla_tgt_srr_imm *imm,
+ int ha_locked)
+{
+ struct qla_hw_data *ha = vha->hw;
+ unsigned long flags = 0;
+
+ if (!ha_locked)
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ qla_tgt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0,
+ NOTIFY_ACK_SRR_FLAGS_REJECT,
+ NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
+ NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
+
+ if (!ha_locked)
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ kfree(imm);
+}
+
+static void 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 = tgt->vha;
+ struct qla_tgt_srr_ctio *sctio;
+ unsigned long flags;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe12e, "Entering SRR work (tgt %p)\n", tgt);
+
+restart:
+ spin_lock_irqsave(&tgt->srr_lock, flags);
+ list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) {
+ struct qla_tgt_srr_imm *imm, *i, *ti;
+ struct qla_tgt_cmd *cmd;
+ struct se_cmd *se_cmd;
+
+ imm = NULL;
+ list_for_each_entry_safe(i, ti, &tgt->srr_imm_list,
+ srr_list_entry) {
+ if (i->srr_id == sctio->srr_id) {
+ list_del(&i->srr_list_entry);
+ if (imm) {
+ 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(tgt->vha, i, 0);
+ } else
+ imm = i;
+ }
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe12f, "IMM SRR %p, CTIO SRR %p (id %d)\n",
+ imm, sctio, sctio->srr_id);
+
+ if (imm == NULL) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe130, "Not found matching IMM"
+ " for SRR CTIO (id %d)\n", sctio->srr_id);
+ continue;
+ } else
+ list_del(&sctio->srr_list_entry);
+
+ spin_unlock_irqrestore(&tgt->srr_lock, flags);
+
+ cmd = sctio->cmd;
+ /*
+ * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow
+ * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in()
+ * logic..
+ */
+ cmd->offset = 0;
+ if (cmd->free_sg) {
+ kfree(cmd->sg);
+ cmd->sg = NULL;
+ cmd->free_sg = 0;
+ }
+ se_cmd = &cmd->se_cmd;
+
+ cmd->sg_cnt = se_cmd->t_tasks_sg_chained_no;
+ cmd->sg = se_cmd->t_tasks_sg_chained;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe131, "SRR cmd %p (se_cmd %p, tag %d, op %x), "
+ "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd,
+ cmd->tag, se_cmd->t_task_cdb[0], cmd->sg_cnt,
+ cmd->offset);
+
+ qla_tgt_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,
+ imm_ntfy_from_isp_t *iocb)
+{
+ struct qla_tgt_srr_imm *imm;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+ struct qla_tgt_srr_ctio *sctio;
+
+ tgt->imm_srr_id++;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe132, "qla_target(%d): SRR received\n",
+ vha->vp_idx);
+
+ imm = kzalloc(sizeof(*imm), GFP_ATOMIC);
+ if (imm != NULL) {
+ memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy));
+
+ /* IRQ is already OFF */
+ spin_lock(&tgt->srr_lock);
+ imm->srr_id = tgt->imm_srr_id;
+ list_add_tail(&imm->srr_list_entry,
+ &tgt->srr_imm_list);
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe133, "IMM NTFY SRR %p added (id %d,"
+ " ui %x)\n", imm, imm->srr_id, iocb->u.isp24.srr_ui);
+ if (tgt->imm_srr_id == tgt->ctio_srr_id) {
+ int found = 0;
+ list_for_each_entry(sctio, &tgt->srr_ctio_list,
+ srr_list_entry) {
+ if (sctio->srr_id == imm->srr_id) {
+ found = 1;
+ break;
+ }
+ }
+ if (found) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe134, "%s", "Scheduling srr work\n");
+ schedule_work(&tgt->srr_work);
+ } else {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe135, "qla_target(%d): imm_srr_id "
+ "== ctio_srr_id (%d), but there is no "
+ "corresponding SRR CTIO, deleting IMM "
+ "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id,
+ imm);
+ list_del(&imm->srr_list_entry);
+
+ kfree(imm);
+
+ spin_unlock(&tgt->srr_lock);
+ goto out_reject;
+ }
+ }
+ spin_unlock(&tgt->srr_lock);
+ } else {
+ struct qla_tgt_srr_ctio *ts;
+
+ 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) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe136, "CTIO SRR %p deleted "
+ "(id %d)\n", sctio, sctio->srr_id);
+ list_del(&sctio->srr_list_entry);
+ qla_tgt_send_term_exchange(vha, sctio->cmd,
+ &sctio->cmd->atio, 1);
+ kfree(sctio);
+ }
+ }
+ spin_unlock(&tgt->srr_lock);
+ goto out_reject;
+ }
+
+ return;
+
+out_reject:
+ qla_tgt_send_notify_ack(vha, iocb, 0, 0, 0,
+ NOTIFY_ACK_SRR_FLAGS_REJECT,
+ NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM,
+ NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ */
+static void qla_tgt_handle_imm_notify(struct scsi_qla_host *vha,
+ imm_ntfy_from_isp_t *iocb)
+{
+ struct qla_hw_data *ha = vha->hw;
+ uint32_t add_flags = 0;
+ int send_notify_ack = 1;
+ uint16_t status;
+
+ status = le16_to_cpu(iocb->u.isp2x.status);
+ switch (status) {
+ case IMM_NTFY_LIP_RESET:
+ {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe137, "qla_target(%d): LIP reset"
+ " (loop %#x), subcode %x\n", vha->vp_idx,
+ le16_to_cpu(iocb->u.isp24.nport_handle),
+ iocb->u.isp24.status_subcode);
+
+ if (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;
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe139, "qla_target(%d): LINK REINIT (loop %#x, "
+ "subcode %x)\n", vha->vp_idx,
+ le16_to_cpu(iocb->u.isp24.nport_handle),
+ iocb->u.isp24.status_subcode);
+ if (tgt->link_reinit_iocb_pending) {
+ qla_tgt_send_notify_ack(vha, &tgt->link_reinit_iocb,
+ 0, 0, 0, 0, 0, 0);
+ }
+ memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb));
+ tgt->link_reinit_iocb_pending = 1;
+ /*
+ * QLogic requires to wait after LINK REINIT for possible
+ * PDISC or ADISC ELS commands
+ */
+ send_notify_ack = 0;
+ break;
+ }
+
+ case IMM_NTFY_PORT_LOGOUT:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe13a, "qla_target(%d): Port logout (loop "
+ "%#x, subcode %x)\n", vha->vp_idx,
+ le16_to_cpu(iocb->u.isp24.nport_handle),
+ iocb->u.isp24.status_subcode);
+
+ if (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:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe13c, "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:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe13d, "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:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe13e,
+ "qla_target(%d): Abort Task (S %08x I %#x -> "
+ "L %#x)\n", vha->vp_idx, le16_to_cpu(iocb->u.isp2x.seq_id),
+ GET_TARGET_ID(ha, (atio_from_isp_t *)iocb),
+ le16_to_cpu(iocb->u.isp2x.lun));
+ if (qla_tgt_abort_task(vha, iocb) == 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:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe13f,
+ "qla_target(%d): Immediate notify task %x\n",
+ vha->vp_idx, iocb->u.isp2x.task_flags);
+ if (qla_tgt_handle_task_mgmt(vha, iocb) == 0)
+ send_notify_ack = 0;
+ break;
+
+ case IMM_NTFY_ELS:
+ if (qla_tgt_24xx_handle_els(vha, iocb) == 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)
+ qla_tgt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0);
+}
+
+/*
+ * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
+ * This function sends busy to ISP 2xxx or 24xx.
+ */
+static void qla_tgt_send_busy(struct scsi_qla_host *vha,
+ atio_from_isp_t *atio, uint16_t status)
+{
+ ctio7_to_24xx_t *ctio24;
+ struct qla_hw_data *ha = vha->hw;
+ request_t *pkt;
+ struct qla_tgt_sess *sess = NULL;
+
+ sess = ha->tgt_ops->find_sess_by_s_id(vha, atio->u.isp24.fcp_hdr.s_id);
+ if (!sess) {
+ qla_tgt_send_term_exchange(vha, NULL, atio, 1);
+ return;
+ }
+ /* Sending marker isn't necessary, since we called from ISR */
+
+ pkt = (request_t *)qla2x00_req_pkt(vha);
+ if (!pkt) {
+ printk(KERN_ERR "qla_target(%d): %s failed: unable to allocate "
+ "request packet", vha->vp_idx, __func__);
+ return;
+ }
+
+ pkt->entry_count = 1;
+ pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
+
+ ctio24 = (ctio7_to_24xx_t *)pkt;
+ ctio24->entry_type = CTIO_TYPE7;
+ ctio24->nport_handle = sess->loop_id;
+ ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT);
+ ctio24->vp_index = vha->vp_idx;
+ ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2];
+ ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1];
+ ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0];
+ ctio24->exchange_addr = atio->u.isp24.exchange_addr;
+ ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | __constant_cpu_to_le16(
+ CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS |
+ CTIO7_FLAGS_DONT_RET_CTIO);
+ /*
+ * CTIO from fw w/o se_cmd doesn't provide enough info to retry it,
+ * if the explicit conformation is used.
+ */
+ ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id);
+ ctio24->u.status1.scsi_status = cpu_to_le16(status);
+ ctio24->u.status1.residual = get_unaligned((uint32_t *)
+ &atio->u.isp24.fcp_cmnd.add_cdb[atio->u.isp24.fcp_cmnd.add_cdb_len]);
+ if (ctio24->u.status1.residual != 0)
+ ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER;
+
+ qla2x00_start_iocbs(vha, vha->req);
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+/* called via callback from qla2xxx */
+static void qla_tgt_24xx_atio_pkt(struct scsi_qla_host *vha, atio_from_isp_t *atio)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt *tgt = ha->qla_tgt;
+ int rc;
+
+ if (unlikely(tgt == NULL)) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe140, "ATIO pkt, but no tgt (ha %p)", ha);
+ return;
+ }
+ ql_dbg(ql_dbg_tgt_pkt, vha, 0xe209, "qla_target(%d): ATIO pkt %p:"
+ " type %02x count %02x", vha->vp_idx, atio, atio->u.raw.entry_type,
+ atio->u.raw.entry_count);
+ /*
+ * In tgt_stop mode we also should allow all requests to pass.
+ * Otherwise, some commands can stuck.
+ */
+
+ tgt->irq_cmd_count++;
+
+ switch (atio->u.raw.entry_type) {
+ case ATIO_TYPE7:
+ ql_dbg(ql_dbg_tgt, vha, 0xe026, "ATIO_TYPE7 instance %d, lun"
+ " %Lx, read/write %d/%d, add_cdb_len %d, data_length "
+ "%04x, s_id %x:%x:%x\n", vha->vp_idx,
+ atio->u.isp24.fcp_cmnd.lun,
+ atio->u.isp24.fcp_cmnd.rddata, atio->u.isp24.fcp_cmnd.wrdata,
+ atio->u.isp24.fcp_cmnd.add_cdb_len,
+ be32_to_cpu(get_unaligned((uint32_t *)
+ &atio->u.isp24.fcp_cmnd.add_cdb[atio->u.isp24.fcp_cmnd.add_cdb_len])),
+ atio->u.isp24.fcp_hdr.s_id[0], atio->u.isp24.fcp_hdr.s_id[1],
+ atio->u.isp24.fcp_hdr.s_id[2]);
+
+ if (unlikely(atio->u.isp24.exchange_addr ==
+ ATIO_EXCHANGE_ADDRESS_UNKNOWN)) {
+ printk(KERN_INFO "qla_target(%d): ATIO_TYPE7 "
+ "received with UNKNOWN exchange address, "
+ "sending QUEUE_FULL\n", vha->vp_idx);
+ qla_tgt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL);
+ break;
+ }
+ if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0))
+ rc = qla_tgt_handle_cmd_for_atio(vha, 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 */
+ qla_tgt_send_busy(vha, atio, SAM_STAT_BUSY);
+#else
+ qla_tgt_send_term_exchange(vha, NULL, atio, 1);
+#endif
+ } else {
+ if (tgt->tgt_stop) {
+ printk(KERN_INFO "qla_target: Unable to send "
+ "command to target for req, ignoring \n");
+ } else {
+ printk(KERN_INFO "qla_target(%d): Unable to send "
+ "command to target, sending BUSY status\n",
+ vha->vp_idx);
+ qla_tgt_send_busy(vha, atio, SAM_STAT_BUSY);
+ }
+ }
+ }
+ break;
+
+ case IMMED_NOTIFY_TYPE:
+ {
+ if (unlikely(atio->u.isp2x.entry_status != 0)) {
+ printk(KERN_ERR "qla_target(%d): Received ATIO packet %x "
+ "with error status %x\n", vha->vp_idx,
+ atio->u.raw.entry_type, atio->u.isp2x.entry_status);
+ break;
+ }
+ ql_dbg(ql_dbg_tgt, vha, 0xe027, "%s", "IMMED_NOTIFY ATIO");
+ qla_tgt_handle_imm_notify(vha, (imm_ntfy_from_isp_t *)atio);
+ break;
+ }
+
+ default:
+ printk(KERN_ERR "qla_target(%d): Received unknown ATIO atio "
+ "type %x\n", vha->vp_idx, atio->u.raw.entry_type);
+ break;
+ }
+
+ tgt->irq_cmd_count--;
+}
+
+/* ha->hardware_lock supposed to be held on entry */
+/* called via callback from qla2xxx */
+static void 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;
+ }
+
+ ql_dbg(ql_dbg_tgt_pkt, vha, 0xe20a, "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_from_24xx_t *entry = (ctio7_from_24xx_t *)pkt;
+ ql_dbg(ql_dbg_tgt, vha, 0xe028, "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_from_isp_t *atio = (atio_from_isp_t *)pkt;
+ int rc;
+ ql_dbg(ql_dbg_tgt, vha, 0xe029, "ACCEPT_TGT_IO instance %d status %04x "
+ "lun %04x read/write %d data_length %04x "
+ "target_id %02x rx_id %04x\n ",
+ vha->vp_idx, le16_to_cpu(atio->u.isp2x.status),
+ le16_to_cpu(atio->u.isp2x.lun),
+ atio->u.isp2x.execution_codes,
+ le32_to_cpu(atio->u.isp2x.data_length),
+ GET_TARGET_ID(ha, atio), atio->u.isp2x.rx_id);
+ if (atio->u.isp2x.status != __constant_cpu_to_le16(ATIO_CDB_VALID)) {
+ printk(KERN_ERR "qla_target(%d): ATIO with error "
+ "status %x received\n", vha->vp_idx,
+ le16_to_cpu(atio->u.isp2x.status));
+ break;
+ }
+ ql_dbg(ql_dbg_tgt_pkt, vha, 0xe20b, "FCP CDB: 0x%02x, sizeof(cdb): %lu",
+ atio->u.isp2x.cdb[0], (unsigned long int)sizeof(atio->u.isp2x.cdb));
+
+ rc = qla_tgt_handle_cmd_for_atio(vha, atio);
+ if (unlikely(rc != 0)) {
+ if (rc == -ESRCH) {
+#if 1 /* With TERM EXCHANGE some FC cards refuse to boot */
+ qla_tgt_send_busy(vha, atio, 0);
+#else
+ qla_tgt_send_term_exchange(vha, NULL, atio, 1);
+#endif
+ } else {
+ if (tgt->tgt_stop) {
+ printk(KERN_INFO "qla_target: Unable to send "
+ "command to target, sending TERM EXCHANGE"
+ " for rsp\n");
+ qla_tgt_send_term_exchange(vha, NULL,
+ atio, 1);
+ } else {
+ printk(KERN_INFO "qla_target(%d): Unable to send "
+ "command to target, sending BUSY status\n",
+ vha->vp_idx);
+ qla_tgt_send_busy(vha, atio, 0);
+ }
+ }
+ }
+ }
+ break;
+
+ case CONTINUE_TGT_IO_TYPE:
+ {
+ ctio_to_2xxx_t *entry = (ctio_to_2xxx_t *)pkt;
+ ql_dbg(ql_dbg_tgt, vha, 0xe02a, "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_to_2xxx_t *entry = (ctio_to_2xxx_t *)pkt;
+ ql_dbg(ql_dbg_tgt, vha, 0xe02b, "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:
+ ql_dbg(ql_dbg_tgt, vha, 0xe02c, "%s", "IMMED_NOTIFY\n");
+ qla_tgt_handle_imm_notify(vha, (imm_ntfy_from_isp_t *)pkt);
+ break;
+
+ case NOTIFY_ACK_TYPE:
+ if (tgt->notify_ack_expected > 0) {
+ nack_to_isp_t *entry = (nack_to_isp_t *)pkt;
+ ql_dbg(ql_dbg_tgt, vha, 0xe02d, "NOTIFY_ACK seq %08x status %x\n",
+ le16_to_cpu(entry->u.isp2x.seq_id),
+ le16_to_cpu(entry->u.isp2x.status));
+ tgt->notify_ack_expected--;
+ if (entry->u.isp2x.status !=
+ __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) {
+ printk(KERN_ERR "qla_target(%d): NOTIFY_ACK "
+ "failed %x\n", vha->vp_idx,
+ le16_to_cpu(entry->u.isp2x.status));
+ }
+ } else {
+ printk(KERN_ERR "qla_target(%d): Unexpected NOTIFY_ACK "
+ "received\n", vha->vp_idx);
+ }
+ break;
+
+ case ABTS_RECV_24XX:
+ ql_dbg(ql_dbg_tgt, vha, 0xe02e, "ABTS_RECV_24XX: instance %d\n", vha->vp_idx);
+ qla_tgt_24xx_handle_abts(vha, (abts_recv_from_24xx_t *)pkt);
+ break;
+
+ case ABTS_RESP_24XX:
+ if (tgt->abts_resp_expected > 0) {
+ abts_resp_from_24xx_fw_t *entry =
+ (abts_resp_from_24xx_fw_t *)pkt;
+ ql_dbg(ql_dbg_tgt, vha, 0xe02f, "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.
+ */
+ qla_tgt_24xx_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;
+
+ 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;
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe034, "scsi(%ld): ha state %d init_done %d"
+ " oper_mode %d topo %d\n", vha->host_no, atomic_read(&vha->loop_state),
+ vha->flags.init_done, ha->operating_mode, ha->current_topology);
+
+ if (!ha->tgt_ops)
+ return;
+
+ if (unlikely(tgt == NULL)) {
+ ql_dbg(ql_dbg_tgt, vha, 0xe035, "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. */
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe141, "qla_target(%d): System error async event %#x "
+ "occured", vha->vp_idx, code);
+ break;
+
+ case MBA_LOOP_UP:
+ {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe142, "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) {
+ qla_tgt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb,
+ 0, 0, 0, 0, 0, 0);
+ tgt->link_reinit_iocb_pending = 0;
+ }
+ break;
+ }
+
+ case MBA_LIP_OCCURRED:
+ case MBA_LOOP_DOWN:
+ case MBA_LIP_RESET:
+ case MBA_RSCN_UPDATE:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe143, "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:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe144, "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)
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe145, "Async MB 2: Got PLOGI Complete\n");
+ else if (reason_code == 0x7)
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe146, "Async MB 2: Port Logged Out\n");
+ break;
+
+ default:
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe147, "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,
+ 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;
+ }
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe148, "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)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_sess *sess = NULL;
+ fc_port_t *fcport = NULL;
+ int rc, global_resets;
+ uint16_t loop_id = 0;
+
+retry:
+ global_resets = atomic_read(&ha->qla_tgt->tgt_global_resets_count);
+
+ rc = qla24xx_get_loop_id(vha, s_id, &loop_id);
+ if (rc != 0) {
+ if ((s_id[0] == 0xFF) &&
+ (s_id[1] == 0xFC)) {
+ /*
+ * This is Domain Controller, so it should be
+ * OK to drop SCSI commands from it.
+ */
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe149, "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, loop_id);
+ if (!fcport)
+ return NULL;
+
+ if (global_resets != atomic_read(&ha->qla_tgt->tgt_global_resets_count)) {
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe14a, "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_abort_work(struct qla_tgt *tgt,
+ struct qla_tgt_sess_work_param *prm)
+{
+ struct scsi_qla_host *vha = tgt->vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_sess *sess = NULL;
+ unsigned long flags;
+ uint32_t be_s_id;
+ uint8_t s_id[3];
+ int rc;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ if (tgt->tgt_stop)
+ goto out_term;
+
+ s_id[0] = prm->abts.fcp_hdr_le.s_id[2];
+ s_id[1] = prm->abts.fcp_hdr_le.s_id[1];
+ s_id[2] = prm->abts.fcp_hdr_le.s_id[0];
+
+ sess = ha->tgt_ops->find_sess_by_s_id(vha,
+ (unsigned char *)&be_s_id);
+ if (!sess) {
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ mutex_lock(&ha->tgt_mutex);
+ sess = qla_tgt_make_local_sess(vha, s_id);
+ /* sess has got an extra creation ref */
+ mutex_unlock(&ha->tgt_mutex);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (!sess)
+ goto out_term;
+ } else {
+ kref_get(&sess->se_sess->sess_kref);
+ }
+
+ if (tgt->tgt_stop)
+ goto out_term;
+
+ rc = __qla_tgt_24xx_handle_abts(vha, &prm->abts, sess);
+ if (rc != 0)
+ goto out_term;
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ ha->tgt_ops->put_sess(sess);
+ return;
+
+out_term:
+ qla_tgt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ if (sess)
+ ha->tgt_ops->put_sess(sess);
+}
+
+static void qla_tgt_tmr_work(struct qla_tgt *tgt,
+ struct qla_tgt_sess_work_param *prm)
+{
+ atio_from_isp_t *a = &prm->tm_iocb2;
+ struct scsi_qla_host *vha = tgt->vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_tgt_sess *sess = NULL;
+ unsigned long flags;
+ uint8_t *s_id = NULL; /* to hide compiler warnings */
+ int rc;
+ uint32_t lun, unpacked_lun;
+ int lun_size, fn;
+ void *iocb;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ if (tgt->tgt_stop)
+ goto out_term;
+
+ s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id;
+ sess = ha->tgt_ops->find_sess_by_s_id(vha, s_id);
+ if (!sess) {
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ mutex_lock(&ha->tgt_mutex);
+ sess = qla_tgt_make_local_sess(vha, s_id);
+ /* sess has got an extra creation ref */
+ mutex_unlock(&ha->tgt_mutex);
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (!sess)
+ goto out_term;
+ } else {
+ kref_get(&sess->se_sess->sess_kref);
+ }
+
+ iocb = a;
+ lun = a->u.isp24.fcp_cmnd.lun;
+ lun_size = sizeof(lun);
+ fn = a->u.isp24.fcp_cmnd.task_mgmt_flags;
+ unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun);
+
+ rc = qla_tgt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0);
+ if (rc != 0)
+ goto out_term;
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ ha->tgt_ops->put_sess(sess);
+ return;
+
+out_term:
+ qla_tgt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ if (sess)
+ ha->tgt_ops->put_sess(sess);
+}
+
+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;
+
+ ql_dbg(ql_dbg_tgt_mgt, vha, 0xe14e, "Sess work (tgt %p)", tgt);
+
+ spin_lock_irqsave(&tgt->sess_work_lock, flags);
+ while (!list_empty(&tgt->sess_works_list)) {
+ struct qla_tgt_sess_work_param *prm = list_entry(
+ tgt->sess_works_list.next, typeof(*prm),
+ sess_works_list_entry);
+
+ /*
+ * This work can be scheduled on several CPUs at time, so we
+ * must delete the entry to eliminate double processing
+ */
+ list_del(&prm->sess_works_list_entry);
+
+ spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+
+ switch (prm->type) {
+ case QLA_TGT_SESS_WORK_ABORT:
+ qla_tgt_abort_work(tgt, prm);
+ break;
+ case QLA_TGT_SESS_WORK_TM:
+ qla_tgt_tmr_work(tgt, prm);
+ break;
+ default:
+ BUG_ON(1);
+ break;
+ }
+
+ spin_lock_irqsave(&tgt->sess_work_lock, flags);
+
+ kfree(prm);
+ }
+ spin_unlock_irqrestore(&tgt->sess_work_lock, flags);
+
+ 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;
+
+ if (ql2x_ini_mode == QLA2XXX_INI_MODE_ENABLED)
+ return 0;
+
+ ql_dbg(ql_dbg_tgt, base_vha, 0xe036, "Registering target for host %ld(%p)",
+ base_vha->host_no, ha);
+
+ BUG_ON((ha->qla_tgt != NULL) || (ha->tgt_ops != NULL));
+
+ tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL);
+ if (!tgt) {
+ printk(KERN_ERR "Unable to allocate struct qla_tgt\n");
+ return -ENOMEM;
+ }
+
+ if (!(base_vha->host->hostt->supported_mode & MODE_TARGET))
+ base_vha->host->hostt->supported_mode |= MODE_TARGET;
+
+ tgt->ha = ha;
+ tgt->vha = base_vha;
+ init_waitqueue_head(&tgt->waitQ);
+ INIT_LIST_HEAD(&tgt->sess_list);
+ INIT_LIST_HEAD(&tgt->del_sess_list);
+ INIT_DELAYED_WORK(&tgt->sess_del_work,
+ (void (*)(struct work_struct *))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;
+
+ printk(KERN_INFO "qla_target(%d): using 64 Bit PCI "
+ "addressing", base_vha->vp_idx);
+ tgt->tgt_enable_64bit_addr = 1;
+ /* 3 is reserved */
+ tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3);
+ tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX;
+ tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX;
+
+ mutex_lock(&qla_tgt_mutex);
+ list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist);
+ mutex_unlock(&qla_tgt_mutex);
+
+ return 0;
+}
+
+/* Must be called under tgt_host_action_mutex */
+int qla_tgt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha)
+{
+ if (!ha->qla_tgt)
+ return 0;
+
+ mutex_lock(&qla_tgt_mutex);
+ list_del(&ha->qla_tgt->tgt_list_entry);
+ mutex_unlock(&qla_tgt_mutex);
+
+ ql_dbg(ql_dbg_tgt, vha, 0xe037, "Unregistering target for host %ld(%p)",
+ vha->host_no, ha);
+ qla_tgt_release(ha->qla_tgt);
+
+ return 0;
+}
+
+static void qla_tgt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, unsigned char *b)
+{
+ int i;
+
+ pr_debug("qla2xxx HW vha->node_name: ");
+ for (i = 0; i < 8; i++)
+ pr_debug("%02x ", vha->node_name[i]);
+ pr_debug("\n");
+ pr_debug("qla2xxx HW vha->port_name: ");
+ for (i = 0; i < 8; i++)
+ pr_debug("%02x ", vha->port_name[i]);
+ pr_debug("\n");
+
+ pr_debug("qla2xxx passed configfs WWPN: ");
+ put_unaligned_be64(wwpn, b);
+ for (i = 0; i < 8; i++)
+ pr_debug("%02x ", b[i]);
+ pr_debug("\n");
+}
+
+/**
+ * qla_tgt_lport_register - register lport with external module
+ *
+ * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops
+ * @wwpn: Passwd FC target WWPN
+ * @callback: lport initialization callback for tcm_qla2xxx code
+ * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
+ */
+int qla_tgt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn,
+ int (*callback)(struct scsi_qla_host *),
+ void *target_lport_ptr)
+{
+ struct qla_tgt *tgt;
+ struct scsi_qla_host *vha;
+ struct qla_hw_data *ha;
+ struct Scsi_Host *host;
+ unsigned long flags;
+ int rc;
+ u8 b[8];
+
+ mutex_lock(&qla_tgt_mutex);
+ list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) {
+ vha = tgt->vha;
+ ha = vha->hw;
+
+ host = vha->host;
+ if (!host)
+ continue;
+
+ if (ha->tgt_ops != NULL)
+ continue;
+
+ if (!(host->hostt->supported_mode & MODE_TARGET))
+ continue;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (host->active_mode & MODE_TARGET) {
+ pr_debug("MODE_TARGET already active on qla2xxx"
+ "(%d)\n", host->host_no);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ continue;
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if (!scsi_host_get(host)) {
+ pr_err("Unable to scsi_host_get() for"
+ " qla2xxx scsi_host\n");
+ continue;
+ }
+ qla_tgt_lport_dump(vha, wwpn, b);
+
+ if (memcmp(vha->port_name, b, 8)) {
+ scsi_host_put(host);
+ continue;
+ }
+ /*
+ * Setup passed parameters ahead of invoking callback
+ */
+ ha->tgt_ops = qla_tgt_ops;
+ ha->target_lport_ptr = target_lport_ptr;
+ rc = (*callback)(vha);
+ if (rc != 0) {
+ ha->tgt_ops = NULL;
+ ha->target_lport_ptr = NULL;
+ }
+ mutex_unlock(&qla_tgt_mutex);
+ return rc;
+ }
+ mutex_unlock(&qla_tgt_mutex);
+
+ return -ENODEV;
+}
+EXPORT_SYMBOL(qla_tgt_lport_register);
+
+/**
+ * qla_tgt_lport_deregister - Degister lport
+ *
+ * @vha: Registered scsi_qla_host pointer
+ */
+void qla_tgt_lport_deregister(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct Scsi_Host *sh = vha->host;
+ /*
+ * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
+ */
+ ha->target_lport_ptr = NULL;
+ ha->tgt_ops = NULL;
+ /*
+ * Release the Scsi_Host reference for the underlying qla2xxx host
+ */
+ scsi_host_put(sh);
+}
+EXPORT_SYMBOL(qla_tgt_lport_deregister);
+
+/* 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 QLA2XXX_INI_MODE_DISABLED:
+ case QLA2XXX_INI_MODE_EXCLUSIVE:
+ vha->host->active_mode = MODE_TARGET;
+ break;
+ case QLA2XXX_INI_MODE_ENABLED:
+ vha->host->active_mode |= MODE_TARGET;
+ break;
+ default:
+ break;
+ }
+
+ if (ha->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 QLA2XXX_INI_MODE_DISABLED:
+ vha->host->active_mode = MODE_UNKNOWN;
+ break;
+ case QLA2XXX_INI_MODE_EXCLUSIVE:
+ vha->host->active_mode = MODE_INITIATOR;
+ break;
+ case QLA2XXX_INI_MODE_ENABLED:
+ vha->host->active_mode &= ~MODE_TARGET;
+ break;
+ default:
+ break;
+ }
+
+ if (ha->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);
+
+ /*
+ * NOTE: Currently the value is kept the same for <24xx and
+ * >=24xx ISPs. If it is necessary to change it,
+ * the check should be added for specific ISPs,
+ * assigning the value appropriately.
+ */
+ ha->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;
+ }
+}
+
+/*
+ * 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_from_isp_t *pkt = (atio_from_isp_t *)ha->atio_ring;
+
+ for (cnt = 0; cnt < ha->atio_q_length; cnt++) {
+ pkt->u.raw.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_from_isp_t *pkt;
+ int cnt, i;
+
+ if (!vha->flags.online)
+ return;
+
+ while (ha->atio_ring_ptr->signature != ATIO_PROCESSED) {
+ pkt = (atio_from_isp_t *)ha->atio_ring_ptr;
+ cnt = pkt->u.raw.entry_count;
+
+ qla_tgt_24xx_atio_pkt_all_vps(vha, (atio_from_isp_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->u.raw.signature = ATIO_PROCESSED;
+ pkt = (atio_from_isp_t *)ha->atio_ring_ptr;
+ }
+ wmb();
+ }
+
+ /* Adjust ring index */
+ WRT_REG_DWORD(®->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;
+
+/* FIXME: atio_q in/out for ha->mqenable=1..? */
+ if (ha->mqenable) {
+#if 0
+ WRT_REG_DWORD(®->isp25mq.atio_q_in, 0);
+ WRT_REG_DWORD(®->isp25mq.atio_q_out, 0);
+ RD_REG_DWORD(®->isp25mq.atio_q_out);
+#endif
+ } else {
+ /* Setup APTIO registers for target mode */
+ WRT_REG_DWORD(®->isp24.atio_q_in, 0);
+ WRT_REG_DWORD(®->isp24.atio_q_out, 0);
+ RD_REG_DWORD(®->isp24.atio_q_out);
+ }
+}
+
+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);
+ /* Disable Full Login after LIP */
+ nv->host_p &= __constant_cpu_to_le32(~BIT_10);
+ /* Enable target PRLI control */
+ nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14);
+ } else {
+ if (ha->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);
+ }
+}
+
+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))
+ vpmod->options_idx1 &= ~BIT_5;
+ /* Disable ini mode, if requested */
+ if (!qla_ini_mode_enabled(vha))
+ 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)
+{
+ 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_from_isp_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_from_isp_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, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0)
+ ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE;
+ else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0)
+ ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED;
+ else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0)
+ ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED;
+ else
+ return false;
+
+ return true;
+}
+
+int __init qla_tgt_init(void)
+{
+ int ret;
+
+ 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) {
+ pr_warn(KERN_ERR "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n");
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab,
+ mempool_free_slab, qla_tgt_mgmt_cmd_cachep);
+ if (!qla_tgt_mgmt_cmd_mempool) {
+ pr_warn(KERN_ERR "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n");
+ ret = -ENOMEM;
+ goto out_mgmt_cmd_cachep;
+ }
+
+ qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0);
+ if (!qla_tgt_wq) {
+ pr_warn(KERN_ERR "alloc_workqueue for qla_tgt_wq failed\n");
+ ret = -ENOMEM;
+ goto out_cmd_mempool;
+ }
+ /*
+ * Return 1 to signal that initiator-mode is being disabled
+ */
+ return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0;
+
+out_cmd_mempool:
+ mempool_destroy(qla_tgt_mgmt_cmd_mempool);
+out_mgmt_cmd_cachep:
+ kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
+out:
+ kmem_cache_destroy(qla_tgt_cmd_cachep);
+ return ret;
+}
+
+void qla_tgt_exit(void)
+{
+ destroy_workqueue(qla_tgt_wq);
+ mempool_destroy(qla_tgt_mgmt_cmd_mempool);
+ kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep);
+ kmem_cache_destroy(qla_tgt_cmd_cachep);
+}
diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h
new file mode 100644
index 0000000..b9d0aa1
--- /dev/null
+++ b/drivers/scsi/qla2xxx/qla_target.h
@@ -0,0 +1,986 @@
+/*
+ * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
+ * Copyright (C) 2004 - 2005 Leonid Stoljar
+ * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
+ * Copyright (C) 2007 - 2010 ID7 Ltd.
+ *
+ * Forward port and refactoring to modern qla2xxx and target/configfs
+ *
+ * Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org>
+ *
+ * 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 QLA2XXX_TARGET_MAGIC 269
+
+/*
+ * Must be changed on any change in any target visible interfaces or
+ * data in the initiator
+ */
+#define QLA2XXX_INITIATOR_MAGIC 57222
+
+#define QLA2XXX_INI_MODE_STR_EXCLUSIVE "exclusive"
+#define QLA2XXX_INI_MODE_STR_DISABLED "disabled"
+#define QLA2XXX_INI_MODE_STR_ENABLED "enabled"
+
+#define QLA2XXX_INI_MODE_EXCLUSIVE 0
+#define QLA2XXX_INI_MODE_DISABLED 1
+#define QLA2XXX_INI_MODE_ENABLED 2
+
+#define QLA2XXX_COMMAND_COUNT_INIT 250
+#define QLA2XXX_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 QLA_TGT_DATASEGS_PER_CMD32
+#define QLA_TGT_DATASEGS_PER_CMD32 3
+#define QLA_TGT_DATASEGS_PER_CONT32 7
+#define QLA_TGT_MAX_SG32(ql) \
+ (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD32 + QLA_TGT_DATASEGS_PER_CONT32*((ql) - 1)) : 0)
+
+#define QLA_TGT_DATASEGS_PER_CMD64 2
+#define QLA_TGT_DATASEGS_PER_CONT64 5
+#define QLA_TGT_MAX_SG64(ql) \
+ (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD64 + QLA_TGT_DATASEGS_PER_CONT64*((ql) - 1)) : 0)
+#endif
+
+#ifndef QLA_TGT_DATASEGS_PER_CMD_24XX
+#define QLA_TGT_DATASEGS_PER_CMD_24XX 1
+#define QLA_TGT_DATASEGS_PER_CONT_24XX 5
+#define QLA_TGT_MAX_SG_24XX(ql) \
+ (min(1270, ((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD_24XX + QLA_TGT_DATASEGS_PER_CONT_24XX*((ql) - 1)) : 0))
+#endif
+#endif
+
+#define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha)) \
+ ? le16_to_cpu((iocb)->u.isp2x.target.extended) \
+ : (uint16_t)(iocb)->u.isp2x.target.id.standard)
+
+#ifndef IMMED_NOTIFY_TYPE
+#define IMMED_NOTIFY_TYPE 0x0D /* Immediate notify entry. */
+/*
+ * ISP queue - immediate notify entry structure definition.
+ * This is sent by the ISP to the Target driver.
+ * This IOCB would have report of events sent by the
+ * initiator, that needs to be handled by the target
+ * driver immediately.
+ */
+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. */
+ union {
+ struct {
+ 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[28];
+ } isp2x;
+ struct {
+ 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;
+ } isp24;
+ } u;
+ uint16_t reserved_7;
+ uint16_t ox_id;
+} __attribute__((packed)) imm_ntfy_from_isp_t;
+#endif
+
+#ifndef NOTIFY_ACK_TYPE
+#define NOTIFY_ACK_TYPE 0x0E /* Notify acknowledge entry. */
+/*
+ * ISP queue - notify acknowledge entry structure definition.
+ * This is sent to the ISP from the target driver.
+ */
+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. */
+ union {
+ struct {
+ 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[24];
+ } isp2x;
+ struct {
+ 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[5];
+ } isp24;
+ } u;
+ uint8_t reserved[2];
+ uint16_t ox_id;
+} __attribute__((packed)) nack_to_isp_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. */
+#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.
+ * This structure is sent to the ISP 2xxx from target driver.
+ */
+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; /* 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_to_2xxx_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
+#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 */
+#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 entry IOCB structure.
+ * This is sent from the ISP to the target driver.
+ */
+typedef struct {
+ union {
+ struct {
+ uint16_t entry_hdr;
+ 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;
+ } isp2x;
+ struct {
+ uint16_t entry_hdr;
+ 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;
+ } isp24;
+ 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 */
+ } raw;
+ } u;
+} __attribute__((packed)) atio_from_isp_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.
+ * This structure is sent to the ISP 24xx from the target driver.
+ */
+
+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;
+ union {
+ struct {
+ 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. */
+ } status0;
+ struct {
+ 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];
+ } status1;
+ } u;
+} __attribute__((packed)) ctio7_to_24xx_t;
+
+/*
+ * ISP queue - CTIO type 7 from ISP 24xx to target driver returned entry structure.
+ */
+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_from_24xx_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
+
+#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 - 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) */
+
+/*
+ * ISP queue - ABTS received IOCB entry structure definition for 24xx.
+ * The ABTS BLS received from the wire is sent to the
+ * target driver by the ISP 24xx.
+ * The IOCB is placed on the response queue.
+ */
+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)) abts_recv_from_24xx_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;
+
+/*
+ * ISP queue - ABTS Response IOCB entry structure definition for 24xx.
+ * The ABTS response to the ABTS received is sent by the
+ * target driver to the ISP 24xx.
+ * The IOCB is placed on the request queue.
+ */
+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)) abts_resp_to_24xx_t;
+
+/*
+ * ISP queue - ABTS Response IOCB from ISP24xx Firmware entry structure.
+ * The ABTS response with completion status to the ABTS response
+ * (sent by the target driver to the ISP 24xx) is sent by the
+ * ISP24xx firmware to the target driver.
+ * The IOCB is placed on the response queue.
+ */
+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)) abts_resp_from_24xx_fw_t;
+
+/********************************************************************\
+ * Type Definitions used by initiator & target halves
+\********************************************************************/
+
+struct qla_tgt_mgmt_cmd;
+struct qla_tgt_sess;
+
+/*
+ * This structure provides a template of function calls that the
+ * target driver (from within qla_target.c) can issue to the
+ * target module (tcm_qla2xxx).
+ */
+struct qla_tgt_func_tmpl {
+
+ int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *,
+ unsigned char *, uint32_t, int, int, int);
+ int (*handle_data)(struct qla_tgt_cmd *);
+ int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t, uint32_t);
+ void (*free_cmd)(struct qla_tgt_cmd *);
+ void (*free_mcmd)(struct qla_tgt_mgmt_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 *);
+ void (*clear_nacl_from_fcport_map)(struct qla_tgt_sess *);
+ void (*put_sess)(struct qla_tgt_sess *);
+};
+
+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_port_24xx_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, sg_tablesize;
+
+ /* 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;
+
+ imm_ntfy_from_isp_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;
+ unsigned int tearing_down:1;
+
+ struct se_session *se_sess;
+ struct scsi_qla_host *vha;
+ struct qla_tgt *tgt;
+
+ struct list_head sess_list_entry;
+ unsigned long expires;
+ struct list_head del_list_entry;
+
+ uint8_t port_name[WWN_SIZE];
+ struct work_struct free_work;
+};
+
+struct qla_tgt_cmd {
+ struct qla_tgt_sess *sess;
+ int state;
+ struct se_cmd se_cmd;
+ struct work_struct free_work;
+ struct work_struct work;
+ /* 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;
+ uint32_t unpacked_lun;
+ 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;
+ struct list_head cmd_list;
+
+ atio_from_isp_t atio;
+};
+
+struct qla_tgt_sess_work_param {
+ struct list_head sess_works_list_entry;
+
+#define QLA_TGT_SESS_WORK_ABORT 1
+#define QLA_TGT_SESS_WORK_TM 2
+ int type;
+
+ union {
+ abts_recv_from_24xx_t abts;
+ imm_ntfy_from_isp_t tm_iocb;
+ atio_from_isp_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 work_struct free_work;
+ unsigned int flags;
+#define QLA24XX_MGMT_SEND_NACK 1
+ union {
+ atio_from_isp_t atio;
+ imm_ntfy_from_isp_t imm_ntfy;
+ abts_recv_from_24xx_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 qla_tgt_srr_imm {
+ struct list_head srr_list_entry;
+ int srr_id;
+ imm_ntfy_from_isp_t imm_ntfy;
+};
+
+struct qla_tgt_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 int qla_tgt_lport_register(struct qla_tgt_func_tmpl *, u64,
+ int (*callback)(struct scsi_qla_host *), void *);
+extern void qla_tgt_lport_deregister(struct scsi_qla_host *);
+extern void qla_tgt_unreg_sess(struct qla_tgt_sess *);
+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 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;
+}
+
+/*
+ * Exported symbols from qla_target.c LLD logic used by qla2xxx code..
+ */
+extern void qla_tgt_24xx_atio_pkt_all_vps(struct scsi_qla_host *,
+ atio_from_isp_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 qla_tgt_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_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_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_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 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 */
--
1.7.2.5
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 2/3] qla2xxx: Enable >= 24xx target-mode support in SCSI LLD
2012-03-16 23:23 [PATCH 0/3] qla2xxx: Add target mode LLD and TCM fabric support Nicholas A. Bellinger
2012-03-16 23:23 ` [PATCH 1/3] qla2xxx: Add LLD target-mode infrastructure for >= 24xx series Nicholas A. Bellinger
@ 2012-03-16 23:23 ` Nicholas A. Bellinger
2012-03-16 23:23 ` [PATCH 3/3] tcm_qla2xxx: Add >= 24xx series fabric module for target-core Nicholas A. Bellinger
2 siblings, 0 replies; 4+ messages in thread
From: Nicholas A. Bellinger @ 2012-03-16 23:23 UTC (permalink / raw)
To: linux-scsi, linux-kernel
Cc: target-devel, Qlogic Linux Team, Andrew Vasquez, Arun Easi,
Giridhar Malavali, Christoph Hellwig, James Bottomley,
Roland Dreier, Joern Engel, Madhuranath Iyengar,
Nicholas Bellinger
From: Nicholas Bellinger <nab@linux-iscsi.org>
This patch enables target mode support within the existing qla2xxx
LLD using qla_target.c logic. This includes the following changes:
*) Addition of target mode specific members to existing data
structures in qla_def.h and struct qla_hw_data->tgt_ops using
qla_target.h:struct qla_tgt_func_tmpl
*) Addition of struct qla_tgt_func_tmpl and direct calls into
qla_target.c logic w/ qla_tgt_* prefixed functions.
*) Addition of qla_iocb.c: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().
More specific checks for qla_hw_data->qla2x_tmpl include:
*) 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()
*) 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()
*) interrupt handlers:
qla_isr.c:qla24xx_intr_handler() -> qla_tgt_24xx_process_atio_queue() +
qla24xx_process_response_queue()
qla24xx_msix_default(): qla_tgt_24xx_process_atio_queue() +
qla24xx_process_response_queue()
(nab: Drop legacy qla_init.c:qla2x00_device_resync() target usage +
qla2xxx: Fix port database pointer ref for !IS_FWI2_CAPABLE (DanC) +
drop qla2x00_get_port_database() for changes fcport->port_type assignment)
Cc: Andrew Vasquez <andrew.vasquez@qlogic.com>
Cc: Arun Easi <arun.easi@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: James Bottomley <JBottomley@Parallels.com>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Joern Engel <joern@logfs.org>
Cc: Madhuranath Iyengar <mni@risingtidesystems.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
---
drivers/scsi/qla2xxx/qla_attr.c | 5 +-
drivers/scsi/qla2xxx/qla_dbg.c | 5 ++
drivers/scsi/qla2xxx/qla_dbg.h | 5 ++
drivers/scsi/qla2xxx/qla_def.h | 69 ++++++++++++++++++--
drivers/scsi/qla2xxx/qla_gbl.h | 7 ++
drivers/scsi/qla2xxx/qla_gs.c | 4 +-
drivers/scsi/qla2xxx/qla_init.c | 82 ++++++++++++++++++++++--
drivers/scsi/qla2xxx/qla_iocb.c | 102 +++++++++++++++++++++++++++++-
drivers/scsi/qla2xxx/qla_isr.c | 83 ++++++++++++++++++++++++-
drivers/scsi/qla2xxx/qla_mbx.c | 101 +++++++++++++++++++++++++++++
drivers/scsi/qla2xxx/qla_mid.c | 17 +++++-
drivers/scsi/qla2xxx/qla_os.c | 133 ++++++++++++++++++++++++++++++++++-----
12 files changed, 579 insertions(+), 34 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 5926f5a..be6102e 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>
@@ -1737,6 +1738,7 @@ 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) {
@@ -1951,7 +1953,8 @@ 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.c b/drivers/scsi/qla2xxx/qla_dbg.c
index 897731b..0393915 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.c
+++ b/drivers/scsi/qla2xxx/qla_dbg.c
@@ -32,6 +32,11 @@
* | ISP82XX Specific | 0xb054 | 0xb053 |
* | MultiQ | 0xc00c | |
* | Misc | 0xd010 | |
+ * | Target Mode | 0xe037 | |
+ * | Target Mode Management | 0xe14e | |
+ * | Target Mode SCSI Packets | 0xe20b | |
+ * | Target Mode Scatterlists | 0xe30c | |
+ * | Target Mode Task Management | 0xe409 | |
* ----------------------------------------------------------------------
*/
diff --git a/drivers/scsi/qla2xxx/qla_dbg.h b/drivers/scsi/qla2xxx/qla_dbg.h
index 2157bdf..2815d24 100644
--- a/drivers/scsi/qla2xxx/qla_dbg.h
+++ b/drivers/scsi/qla2xxx/qla_dbg.h
@@ -339,3 +339,8 @@ ql_log_pci(uint32_t, struct pci_dev *pdev, int32_t, const char *fmt, ...);
#define ql_dbg_misc 0x00010000 /* For dumping everything that is not
* not covered by upper categories
*/
+#define ql_dbg_tgt 0x00008000 /* Target mode */
+#define ql_dbg_tgt_mgt 0x00004000 /* Target mode management */
+#define ql_dbg_tgt_pkt 0x00002000 /* Target mode SCSI packets */
+#define ql_dbg_tgt_sgl 0x00001000 /* Target mode scatterlists */
+#define ql_dbg_tgt_tmr 0x00000800 /* Target mode task management */
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index a244303..2767e77 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -177,7 +177,7 @@
#define LOOP_DOWN_RESET (LOOP_DOWN_TIME - 30)
/* Maximum outstanding commands in ISP queues (1-65535) */
-#define MAX_OUTSTANDING_COMMANDS 1024
+#define MAX_OUTSTANDING_COMMANDS 16384
/* ISP request and response entry counts (37-65535) */
#define REQUEST_ENTRY_CNT_2100 128 /* Number of request entries. */
@@ -186,6 +186,7 @@
#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;
@@ -558,7 +559,7 @@ 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. */
@@ -1234,11 +1235,27 @@ 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 {
@@ -1722,6 +1739,9 @@ typedef struct fc_port {
uint16_t vp_idx;
uint8_t fc4_type;
uint8_t scan_state;
+
+ /* True, if confirmed completion is supported */
+ uint8_t conf_compl_supported:1;
} fc_port_t;
/*
@@ -2857,12 +2877,44 @@ struct qla_hw_data {
uint8_t fw_type;
__le32 file_prd_off; /* File firmware product offset */
-
uint32_t md_template_size;
void *md_tmplt_hdr;
- dma_addr_t md_tmplt_hdr_dma;
- void *md_dump;
+ dma_addr_t md_tmplt_hdr_dma;
+ void *md_dump;
uint32_t md_dump_size;
+
+ /* 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_tgt_func_tmpl *tgt_ops;
+ 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];
};
/*
@@ -2983,6 +3035,11 @@ 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.
*/
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index 9f06580..fa9c414 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -175,6 +175,7 @@ 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);
@@ -188,6 +189,8 @@ extern uint16_t qla24xx_calc_iocbs(scsi_qla_host_t *, 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 int qla2x00_issue_marker(scsi_qla_host_t *, int);
/*
* Global Function Prototypes in qla_mbx.c source file.
@@ -239,6 +242,9 @@ 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
@@ -546,6 +552,7 @@ extern void qla2x00_sp_free(void *, void *);
extern void qla2x00_sp_timeout(unsigned long);
extern void qla2x00_bsg_job_done(void *, void *, int);
extern void qla2x00_bsg_sp_free(void *, void *);
+extern void qla2x00_start_iocbs(struct scsi_qla_host *, struct req_que *);
/* Interrupt related */
extern irqreturn_t qla82xx_intr_handler(int, void *);
diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c
index 3128f80..487c8a3 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 *);
@@ -556,7 +557,8 @@ 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 b946564..2342c8c 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -17,6 +17,9 @@
#include <asm/prom.h>
#endif
+#include <target/target_core_base.h>
+#include "qla_target.h"
+
/*
* QLogic ISP2x00 Hardware Support Function Prototypes.
*/
@@ -518,7 +521,10 @@ qla2x00_initialize_adapter(scsi_qla_host_t *vha)
return QLA_FUNCTION_FAILED;
}
}
- rval = qla2x00_init_rings(vha);
+
+ if (qla_ini_mode_enabled(vha))
+ rval = qla2x00_init_rings(vha);
+
ha->flags.chip_reset_done = 1;
if (rval == QLA_SUCCESS && IS_QLA84XX(ha)) {
@@ -1696,6 +1702,12 @@ 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 || IS_QLA83XX(ha)) {
icb->qos = __constant_cpu_to_le16(QLA_DEFAULT_QUE_QOS);
icb->rid = __constant_cpu_to_le16(rid);
@@ -1739,6 +1751,8 @@ qla24xx_config_rings(struct scsi_qla_host *vha)
WRT_REG_DWORD(®->isp24.rsp_q_in, 0);
WRT_REG_DWORD(®->isp24.rsp_q_out, 0);
}
+ qla_tgt_24xx_config_rings(vha, reg);
+
/* PCI posting */
RD_REG_DWORD(&ioreg->hccr);
}
@@ -1794,6 +1808,11 @@ 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);
@@ -2051,6 +2070,8 @@ 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)
ql_log(ql_log_info, vha, 0x2010,
"Topology - %s, Host Loop address 0x%x.\n",
@@ -2262,15 +2283,23 @@ qla2x00_nvram_config(scsi_qla_host_t *vha)
/*
* 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)) {
@@ -2284,6 +2313,7 @@ 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
@@ -2315,8 +2345,8 @@ 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);
}
@@ -2467,14 +2497,21 @@ 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 qla_target.c code
+ * if target mod is enabled.
+ */
+ qla_tgt_fc_port_deleted(vha, fcport);
+ }
}
/**
@@ -2864,6 +2901,12 @@ 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 qla_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);
@@ -3595,6 +3638,13 @@ 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) {
@@ -4066,6 +4116,7 @@ qla2x00_restart_isp(scsi_qla_host_t *vha)
struct qla_hw_data *ha = vha->hw;
struct req_que *req = ha->req_q_map[0];
struct rsp_que *rsp = ha->rsp_q_map[0];
+ unsigned long flags;
/* If firmware needs to be loaded */
if (qla2x00_isp_firmware(vha)) {
@@ -4090,6 +4141,16 @@ qla2x00_restart_isp(scsi_qla_host_t *vha)
qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL);
vha->flags.online = 1;
+
+ /*
+ * Process any ATIO queue entries that came in
+ * while we weren't online.
+ */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (qla_tgt_mode_enabled(vha))
+ qla_tgt_24xx_process_atio_queue(vha);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
/* Wait at most MAX_TARGET RSCNs for a stable link. */
wait_time = 256;
do {
@@ -4330,6 +4391,15 @@ qla24xx_nvram_config(scsi_qla_host_t *vha)
rval = 1;
}
+ if (!qla_ini_mode_enabled(vha)) {
+ /* Don't enable full login after initial LIP */
+ nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13);
+ /* Don't enable LIP full login for initiator */
+ nv->host_p &= __constant_cpu_to_le32(~BIT_10);
+ }
+
+ qla_tgt_24xx_config_nvram_stage1(vha, nv);
+
/* Reset Initialization control block */
memset(icb, 0, ha->init_cb_size);
@@ -4357,8 +4427,10 @@ 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 eac9509..88dd472 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -5,6 +5,7 @@
* See LICENSE.qla2xxx for copyright and licensing details.
*/
#include "qla_def.h"
+#include "qla_target.h"
#include <linux/blkdev.h>
#include <linux/delay.h>
@@ -470,7 +471,7 @@ queuing_error:
/**
* qla2x00_start_iocbs() - Execute the IOCB command
*/
-static void
+void
qla2x00_start_iocbs(struct scsi_qla_host *vha, struct req_que *req)
{
struct qla_hw_data *ha = vha->hw;
@@ -571,6 +572,104 @@ 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(®->isp24.req_q_out);
+ else
+ cnt = qla2x00_debounce_register(
+ ISP_REQ_Q_OUT(ha, ®->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;
+}
+
/**
* qla24xx_calc_iocbs() - Determine number of Command Type 3 and
* Continuation Type 1 IOCBs to allocate.
@@ -1882,6 +1981,7 @@ skip_cmd_array:
queuing_error:
return pkt;
}
+EXPORT_SYMBOL(qla2x00_alloc_iocbs);
static void
qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio)
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index f79844c..6656fda 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>
@@ -214,6 +215,12 @@ 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:
ql_dbg(ql_dbg_async, vha, 0x5028,
"Unrecognized interrupt type (%d).\n", stat & 0xff);
@@ -335,6 +342,7 @@ qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
if (IS_CNA_CAPABLE(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;
@@ -396,6 +404,10 @@ skip_rio:
handles[cnt]);
break;
+ case MBA_CTIO_COMPLETION:
+ qla_tgt_ctio_completion(vha, handles[0]);
+ break;
+
case MBA_RESET: /* Reset */
ql_dbg(ql_dbg_async, vha, 0x5002,
"Asynchronous RESET.\n");
@@ -454,8 +466,10 @@ skip_rio:
case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
ql_dbg(ql_dbg_async, vha, 0x5008,
"Asynchronous WAKEUP_THRES.\n");
- break;
+ if (qla_tgt_mode_enabled(vha))
+ set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+ break;
case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
ql_dbg(ql_dbg_async, vha, 0x5009,
"LIP occurred (%x).\n", mb[1]);
@@ -670,6 +684,8 @@ skip_rio:
ql_dbg(ql_dbg_async, vha, 0x5011,
"Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
mb[1], mb[2], mb[3]);
+
+ qla_tgt_async_event(mb[0], vha, mb);
break;
}
@@ -686,6 +702,8 @@ 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 */
@@ -807,6 +825,8 @@ skip_rio:
mb[0], mb[1], mb[2], mb[3]);
}
+ qla_tgt_async_event(mb[0], vha, mb);
+
if (!vha->vp_idx && ha->num_vhosts)
qla2x00_alert_all_vps(rsp, mb);
}
@@ -823,6 +843,11 @@ 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) {
ql_log(ql_log_warn, vha, 0x3014,
@@ -1299,6 +1324,13 @@ qla2x00_process_response_queue(struct rsp_que *rsp)
}
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:
+ qla_tgt_response_pkt_all_vps(vha, (response_t *)pkt);
+ break;
case STATUS_TYPE:
qla2x00_status_entry(vha, rsp, pkt);
break;
@@ -1882,6 +1914,7 @@ qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
srb_t *sp;
struct qla_hw_data *ha = vha->hw;
const char func[] = "ERROR-IOCB";
+ uint32_t handle = LSW(pkt->handle);
uint16_t que = MSW(pkt->handle);
struct req_que *req = NULL;
int res = DID_ERROR << 16;
@@ -1892,8 +1925,21 @@ qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
if (que >= ha->max_req_queues || !ha->req_q_map[que])
goto fatal;
+ if (que >= ha->max_req_queues) {
+ /* Target command with high bits of handle set */
+ printk(KERN_ERR "%s: error entry, type 0x%0x status 0x%x\n",
+ __func__, pkt->entry_type, pkt->entry_status);
+ return;
+ }
+
req = ha->req_q_map[que];
+ /* Validate handle. */
+ if (handle < MAX_OUTSTANDING_COMMANDS)
+ sp = req->outstanding_cmds[handle];
+ else
+ sp = NULL;
+
if (pkt->entry_status & RF_BUSY)
res = DID_BUS_BUSY << 16;
@@ -1947,6 +1993,16 @@ qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
mboxes >>= 1;
wptr++;
}
+
+#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
}
/**
@@ -1975,6 +2031,10 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha,
if (pkt->entry_status != 0) {
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;
@@ -2005,6 +2065,13 @@ 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);
case MARKER_TYPE:
/* Do nothing in this case, this check is to prevent it
* from falling into default case
@@ -2157,6 +2224,13 @@ 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:
ql_dbg(ql_dbg_async, vha, 0x504f,
"Unrecognized interrupt type (%d).\n", stat * 0xff);
@@ -2301,6 +2375,13 @@ 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:
ql_dbg(ql_dbg_async, vha, 0x5051,
"Unrecognized interrupt type (%d).\n", stat & 0xff);
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index b4a2339..c0d7080 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>
@@ -1220,6 +1221,93 @@ 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_port_24xx_data *list = NULL;
+ void *pmap;
+ mbx_cmd_t mc;
+ dma_addr_t pmap_dma;
+ ulong dma_size;
+ int rval, left;
+
+ 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)) {
+ left += le16_to_cpu(mc.mb[2]) / sizeof(struct qla_port_24xx_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.
@@ -1326,6 +1414,13 @@ qla2x00_get_port_database(scsi_qla_host_t *vha, fc_port_t *fcport, uint8_t opt)
fcport->port_type = FCT_INITIATOR;
else
fcport->port_type = FCT_TARGET;
+
+ /* 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 {
uint64_t zero = 0;
@@ -1383,6 +1478,7 @@ gpd_error_out:
return rval;
}
+EXPORT_SYMBOL(qla2x00_get_port_database);
/*
* qla2x00_get_firmware_state
@@ -1733,6 +1829,8 @@ 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);
@@ -3015,6 +3113,9 @@ 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 aa062a1..cdd2fdd 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>
@@ -49,6 +50,7 @@ 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);
@@ -79,6 +81,7 @@ 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;
@@ -144,12 +147,16 @@ 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;
@@ -267,6 +274,8 @@ 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
@@ -288,8 +297,12 @@ qla2x00_vp_abort_isp(scsi_qla_host_t *vha)
qla24xx_control_vp(vha, VCE_COMMAND_DISABLE_VPS_LOGO_ALL);
ql_dbg(ql_dbg_taskm, vha, 0x801d,
- "Scheduling enable of Vport %d.\n", vha->vp_idx);
- return qla24xx_enable_vp(vha);
+ "Scheduling enable of Vport %d.\n", vha->vp_idx);
+ ret = qla24xx_enable_vp(vha);
+ if (ret)
+ return ret;
+
+ return 0;
}
static int
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index a2f9992..c49f39e 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -4,8 +4,6 @@
*
* See LICENSE.qla2xxx for copyright and licensing details.
*/
-#include "qla_def.h"
-
#include <linux/moduleparam.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
@@ -13,12 +11,15 @@
#include <linux/mutex.h>
#include <linux/kobject.h>
#include <linux/slab.h>
-
+#include <linux/workqueue.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsicam.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_fc.h>
+#include "qla_def.h"
+#include "qla_target.h"
+
/*
* Driver version
*/
@@ -40,6 +41,12 @@ static struct kmem_cache *ctx_cachep;
*/
int ql_errlev = ql_log_all;
+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,
@@ -255,6 +262,8 @@ struct scsi_host_template qla2xxx_driver_template = {
.max_sectors = 0xFFFF,
.shost_attrs = qla2x00_host_attrs,
+
+ .supported_mode = MODE_INITIATOR,
};
static struct scsi_transport_template *qla2xxx_transport_template = NULL;
@@ -882,6 +891,38 @@ 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)) {
+ ql_dbg(ql_dbg_taskm, vha, 0x8010,
+ "Abort failed -- %lx\n", sp->u.scmd.cmd->serial_number);
+ } else {
+ if (qla2x00_eh_wait_on_command(sp->u.scmd.cmd) != QLA_SUCCESS)
+ ql_dbg(ql_dbg_taskm, vha, 0x8011,
+ "Abort failed while waiting -- %lx\n",
+ sp->u.scmd.cmd->serial_number);
+ }
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
/**************************************************************************
* qla2xxx_eh_abort
*
@@ -2180,6 +2221,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
ql_dbg_pci(ql_dbg_init, pdev, 0x000a,
"Memory allocated for ha=%p.\n", ha);
ha->pdev = pdev;
+ ha->enable_class_2 = ql2xenableclass2;
/* Clear our data area */
ha->bars = bars;
@@ -2243,6 +2285,7 @@ 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;
@@ -2258,6 +2301,7 @@ 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;
@@ -2417,6 +2461,8 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
host->max_cmd_len, host->max_channel, host->max_lun,
host->transportt, sht->vendor_id);
+ qla_tgt_probe_one_stage1(base_vha, ha);
+
/* Set up the irqs */
ret = qla2x00_request_irqs(ha, rsp);
if (ret)
@@ -2514,6 +2560,14 @@ que_init:
ql_dbg(ql_dbg_init, base_vha, 0x00ee,
"DPC thread started successfully.\n");
+ /*
+ * If we're not coming up in initiator mode, we might sit for
+ * a while without waking up the dpc thread, which leads to a
+ * stuck process warning. So just kick the dpc once here and
+ * let the kthread start (and go back to sleep in qla2x00_do_dpc).
+ */
+ qla2xxx_wake_dpc(base_vha);
+
skip_dpc:
list_add_tail(&base_vha->list, &ha->vp_list);
base_vha->host->irq = ha->pdev->irq;
@@ -2559,7 +2613,11 @@ skip_dpc:
ql_dbg(ql_dbg_init, base_vha, 0x00f2,
"Init done and hba is online.\n");
- scsi_scan_host(host);
+ if (qla_ini_mode_enabled(base_vha))
+ scsi_scan_host(host);
+ else
+ ql_dbg(ql_dbg_init, base_vha, 0x00f3,
+ "skipping scsi_scan_host() for non-initiator port\n");
qla2x00_alloc_sysfs_attr(base_vha);
@@ -2577,6 +2635,8 @@ skip_dpc:
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:
@@ -2657,15 +2717,33 @@ 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;
+
mutex_lock(&ha->vport_lock);
while (ha->cur_vport_count) {
struct Scsi_Host *scsi_host;
@@ -2719,6 +2797,7 @@ 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);
@@ -2770,17 +2849,7 @@ 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);
@@ -2946,10 +3015,13 @@ 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,
qla2x00_gid_list_size(ha), &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)
@@ -3167,6 +3239,8 @@ 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);
@@ -3282,6 +3356,8 @@ 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);
@@ -3311,6 +3387,10 @@ 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,
@@ -4442,6 +4522,21 @@ 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;
+ } else if (ret > 0) {
+ /*
+ * If initiator mode is explictly disabled by qla_tgt_init(),
+ * prevent scsi_transport_fc.c:fc_scsi_scan_rport() from
+ * performing scsi_scan_target() during LOOP UP event.
+ */
+ qla2xxx_transport_functions.disable_target_scan = 1;
+ qla2xxx_transport_vport_functions.disable_target_scan = 1;
+ }
+
/* Derive version string. */
strcpy(qla2x00_version_str, QLA2XXX_VERSION);
if (ql2xextended_error_logging)
@@ -4453,6 +4548,7 @@ qla2x00_module_init(void)
kmem_cache_destroy(srb_cachep);
ql_log(ql_log_fatal, NULL, 0x0002,
"fc_attach_transport failed...Failing load!.\n");
+ qla_tgt_exit();
return -ENODEV;
}
@@ -4466,6 +4562,7 @@ 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);
ql_log(ql_log_fatal, NULL, 0x0004,
"fc_attach_transport vport failed...Failing load!.\n");
@@ -4477,6 +4574,7 @@ 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);
ql_log(ql_log_fatal, NULL, 0x0006,
@@ -4496,6 +4594,7 @@ 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);
--
1.7.2.5
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 3/3] tcm_qla2xxx: Add >= 24xx series fabric module for target-core
2012-03-16 23:23 [PATCH 0/3] qla2xxx: Add target mode LLD and TCM fabric support Nicholas A. Bellinger
2012-03-16 23:23 ` [PATCH 1/3] qla2xxx: Add LLD target-mode infrastructure for >= 24xx series Nicholas A. Bellinger
2012-03-16 23:23 ` [PATCH 2/3] qla2xxx: Enable >= 24xx target-mode support in SCSI LLD Nicholas A. Bellinger
@ 2012-03-16 23:23 ` Nicholas A. Bellinger
2 siblings, 0 replies; 4+ messages in thread
From: Nicholas A. Bellinger @ 2012-03-16 23:23 UTC (permalink / raw)
To: linux-scsi, linux-kernel
Cc: target-devel, Qlogic Linux Team, Andrew Vasquez, Arun Easi,
Giridhar Malavali, Christoph Hellwig, James Bottomley,
Roland Dreier, Joern Engel, Madhuranath Iyengar,
Nicholas Bellinger
From: Nicholas Bellinger <nab@linux-iscsi.org>
This patch adds support for tcm_qla2xxx fabric module for target-core using
the new qla_target.c LLD logic. This includes support for explict NodeACLs
via configfs using tcm_qla2xxx_setup_nacl_from_rport() from libfc
struct fc_host->rports, and demo-mode support for virtual LUN=0 access.
This patch also adds support for using tcm_qla2xxx_lport->lport_fcport_map
and ->lport_loopid_map to track struct se_node_acl pointers for
individual 24-bit Port ID and 16-bit Loop ID values for qla_target_template
->find_sess_by_s_id() and ->find_sess_by_loop_id() used in a number of
locations into the primary I/O dispatch logic in qla_target.c LLD code.
The main piece for FC Nexus setup is in tcm_qla2xxx_check_initiator_node_acl(),
which calls tcm_qla2xxx_set_sess_by_[s_id,loop_id]() to setup our
lport->lport_fcport_map and lport_loopid_map pointers respectively, and
register the new nexus with TCM via __transport_register_session().
(nab: Add qla_tgt_mgmt_cmd usage with TARGET_SCF_ACK_KREF during TMRs +
change tcm_qla2xxx_nacl->nport_id to u32 (DanC))
(DanC: tcm_qla2xxx: checking for NULL instead of IS_ERR())
Cc: Andrew Vasquez <andrew.vasquez@qlogic.com>
Cc: Arun Easi <arun.easi@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: James Bottomley <JBottomley@Parallels.com>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Joern Engel <joern@logfs.org>
Cc: Madhuranath Iyengar <mni@risingtidesystems.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
---
drivers/scsi/qla2xxx/Kconfig | 8 +
drivers/scsi/qla2xxx/Makefile | 1 +
drivers/scsi/qla2xxx/tcm_qla2xxx.c | 1981 ++++++++++++++++++++++++++++++++++++
drivers/scsi/qla2xxx/tcm_qla2xxx.h | 149 +++
4 files changed, 2139 insertions(+), 0 deletions(-)
create mode 100644 drivers/scsi/qla2xxx/tcm_qla2xxx.c
create mode 100644 drivers/scsi/qla2xxx/tcm_qla2xxx.h
diff --git a/drivers/scsi/qla2xxx/Kconfig b/drivers/scsi/qla2xxx/Kconfig
index 6208d56..6c3ce52 100644
--- a/drivers/scsi/qla2xxx/Kconfig
+++ b/drivers/scsi/qla2xxx/Kconfig
@@ -25,3 +25,11 @@ config SCSI_QLA_FC
Firmware images can be retrieved from:
ftp://ftp.qlogic.com/outgoing/linux/firmware/
+
+config TCM_QLA2XXX
+ tristate "TCM_QLA2XXX fabric module for Qlogic 2xxx series target mode HBAs"
+ depends on SCSI_QLA_FC && TARGET_CORE
+ select LIBFC
+ default n
+ ---help---
+ Say Y here to enable the TCM_QLA2XXX fabric module for Qlogic 2xxx series target mode HBAs
diff --git a/drivers/scsi/qla2xxx/Makefile b/drivers/scsi/qla2xxx/Makefile
index 702931ff..dce7d78 100644
--- a/drivers/scsi/qla2xxx/Makefile
+++ b/drivers/scsi/qla2xxx/Makefile
@@ -3,3 +3,4 @@ qla2xxx-y := qla_os.o qla_init.o qla_mbx.o qla_iocb.o qla_isr.o qla_gs.o \
qla_nx.o qla_target.o
obj-$(CONFIG_SCSI_QLA_FC) += qla2xxx.o
+obj-$(CONFIG_TCM_QLA2XXX) += tcm_qla2xxx.o
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
new file mode 100644
index 0000000..6dd8102
--- /dev/null
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -0,0 +1,1981 @@
+/*******************************************************************************
+ * This file contains tcm implementation using v4 configfs fabric infrastructure
+ * for QLogic target mode HBAs
+ *
+ * (c) Copyright 2010-2011 RisingTide Systems LLC.
+ *
+ * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
+ *
+ * Author: Nicholas A. Bellinger <nab@risingtidesystems.com>
+ *
+ * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
+ * the TCM_FC / Open-FCoE.org fabric module.
+ *
+ * Copyright (c) 2010 Cisco Systems, Inc
+ *
+ * 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.
+ ****************************************************************************/
+
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <generated/utsrelease.h>
+#include <linux/utsname.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/kthread.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/configfs.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <asm/unaligned.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_cmnd.h>
+#include <target/target_core_base.h>
+#include <target/target_core_fabric.h>
+#include <target/target_core_fabric_configfs.h>
+#include <target/target_core_configfs.h>
+#include <target/configfs_macros.h>
+
+#include "qla_def.h"
+#include "qla_target.h"
+#include "tcm_qla2xxx.h"
+
+extern struct workqueue_struct *tcm_qla2xxx_free_wq;
+extern struct workqueue_struct *tcm_qla2xxx_cmd_wq;
+
+int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
+{
+ return 1;
+}
+
+int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
+{
+ return 0;
+}
+
+/*
+ * Parse WWN.
+ * If strict, we require lower-case hex and colon separators to be sure
+ * the name is the same as what would be generated by ft_format_wwn()
+ * so the name and wwn are mapped one-to-one.
+ */
+ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
+{
+ const char *cp;
+ char c;
+ u32 nibble;
+ u32 byte = 0;
+ u32 pos = 0;
+ u32 err;
+
+ *wwn = 0;
+ for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
+ c = *cp;
+ if (c == '\n' && cp[1] == '\0')
+ continue;
+ if (strict && pos++ == 2 && byte++ < 7) {
+ pos = 0;
+ if (c == ':')
+ continue;
+ err = 1;
+ goto fail;
+ }
+ if (c == '\0') {
+ err = 2;
+ if (strict && byte != 8)
+ goto fail;
+ return cp - name;
+ }
+ err = 3;
+ if (isdigit(c))
+ nibble = c - '0';
+ else if (isxdigit(c) && (islower(c) || !strict))
+ nibble = tolower(c) - 'a' + 10;
+ else
+ goto fail;
+ *wwn = (*wwn << 4) | nibble;
+ }
+ err = 4;
+fail:
+ pr_debug("err %u len %zu pos %u byte %u\n",
+ err, cp - name, pos, byte);
+ return -1;
+}
+
+ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
+{
+ u8 b[8];
+
+ put_unaligned_be64(wwn, b);
+ return snprintf(buf, len,
+ "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
+ b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
+}
+
+char *tcm_qla2xxx_get_fabric_name(void)
+{
+ return "qla2xxx";
+}
+
+/*
+ * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
+ */
+static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
+{
+ unsigned int i, j, value;
+ u8 wwn[8];
+
+ memset(wwn, 0, sizeof(wwn));
+
+ /* Validate and store the new name */
+ for (i = 0, j = 0; i < 16; i++) {
+ value = hex_to_bin(*ns++);
+ if (value >= 0)
+ j = (j << 4) | value;
+ else
+ return -EINVAL;
+
+ if (i % 2) {
+ wwn[i/2] = j & 0xff;
+ j = 0;
+ }
+ }
+
+ *nm = wwn_to_u64(wwn);
+ return 0;
+}
+
+/*
+ * This parsing logic follows drivers/scsi/scsi_transport_fc.c:store_fc_host_vport_create()
+ */
+int tcm_qla2xxx_npiv_parse_wwn(
+ const char *name,
+ size_t count,
+ u64 *wwpn,
+ u64 *wwnn)
+{
+ unsigned int cnt = count;
+ int rc;
+
+ *wwpn = 0;
+ *wwnn = 0;
+
+ /* count may include a LF at end of string */
+ if (name[cnt-1] == '\n')
+ cnt--;
+
+ /* validate we have enough characters for WWPN */
+ if ((cnt != (16+1+16)) || (name[16] != ':'))
+ return -EINVAL;
+
+ rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
+ if (rc != 0)
+ return rc;
+
+ rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
+ if (rc != 0)
+ return rc;
+
+ return 0;
+}
+
+ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len, u64 wwpn, u64 wwnn)
+{
+ u8 b[8], b2[8];
+
+ put_unaligned_be64(wwpn, b);
+ put_unaligned_be64(wwnn, b2);
+ return snprintf(buf, len,
+ "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
+ "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
+ b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
+ b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
+}
+
+char *tcm_qla2xxx_npiv_get_fabric_name(void)
+{
+ return "qla2xxx_npiv";
+}
+
+u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+ u8 proto_id;
+
+ switch (lport->lport_proto_id) {
+ case SCSI_PROTOCOL_FCP:
+ default:
+ proto_id = fc_get_fabric_proto_ident(se_tpg);
+ break;
+ }
+
+ return proto_id;
+}
+
+char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+
+ return &lport->lport_name[0];
+}
+
+char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+
+ return &lport->lport_npiv_name[0];
+}
+
+u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ return tpg->lport_tpgt;
+}
+
+u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
+{
+ return 1;
+}
+
+u32 tcm_qla2xxx_get_pr_transport_id(
+ struct se_portal_group *se_tpg,
+ struct se_node_acl *se_nacl,
+ struct t10_pr_registration *pr_reg,
+ int *format_code,
+ unsigned char *buf)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+ int ret = 0;
+
+ switch (lport->lport_proto_id) {
+ case SCSI_PROTOCOL_FCP:
+ default:
+ ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
+ format_code, buf);
+ break;
+ }
+
+ return ret;
+}
+
+u32 tcm_qla2xxx_get_pr_transport_id_len(
+ struct se_portal_group *se_tpg,
+ struct se_node_acl *se_nacl,
+ struct t10_pr_registration *pr_reg,
+ int *format_code)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+ int ret = 0;
+
+ switch (lport->lport_proto_id) {
+ case SCSI_PROTOCOL_FCP:
+ default:
+ ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
+ format_code);
+ break;
+ }
+
+ return ret;
+}
+
+char *tcm_qla2xxx_parse_pr_out_transport_id(
+ struct se_portal_group *se_tpg,
+ const char *buf,
+ u32 *out_tid_len,
+ char **port_nexus_ptr)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+ char *tid = NULL;
+
+ switch (lport->lport_proto_id) {
+ case SCSI_PROTOCOL_FCP:
+ default:
+ tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
+ port_nexus_ptr);
+ break;
+ }
+
+ return tid;
+}
+
+int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+
+ return QLA_TPG_ATTRIB(tpg)->generate_node_acls;
+}
+
+int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+
+ return QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls;
+}
+
+int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+
+ return QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect;
+}
+
+int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+
+ return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect;
+}
+
+struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_nacl *nacl;
+
+ nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
+ if (!nacl) {
+ pr_err("Unable to alocate struct tcm_qla2xxx_nacl\n");
+ return NULL;
+ }
+
+ return &nacl->se_node_acl;
+}
+
+void tcm_qla2xxx_release_fabric_acl(
+ struct se_portal_group *se_tpg,
+ struct se_node_acl *se_nacl)
+{
+ struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
+ struct tcm_qla2xxx_nacl, se_node_acl);
+ kfree(nacl);
+}
+
+u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+
+ return tpg->lport_tpgt;
+}
+
+static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
+{
+ struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
+ struct qla_tgt_mgmt_cmd, free_work);
+
+ transport_generic_free_cmd(&mcmd->se_cmd, 0);
+}
+
+/*
+ * Called from qla_target_template->free_mcmd(), and will call
+ * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
+ * release callback. qla_hw_data->hardware_lock is expected to be held
+ */
+static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
+{
+ INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
+ queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
+}
+
+static void tcm_qla2xxx_complete_free(struct work_struct *work)
+{
+ struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
+
+ transport_generic_free_cmd(&cmd->se_cmd, 0);
+}
+
+/*
+ * Called from qla_target_template->free_cmd(), and will call
+ * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
+ * release callback. qla_hw_data->hardware_lock is expected to be held
+ */
+void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
+{
+ INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
+ queue_work(tcm_qla2xxx_free_wq, &cmd->work);
+}
+
+/*
+ * Called from struct target_core_fabric_ops->check_stop_free() context
+ */
+int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
+{
+ return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
+}
+
+/* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying fabric descriptor
+ * @se_cmd command to release
+ */
+void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
+{
+ struct qla_tgt_cmd *cmd;
+
+ if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
+ struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
+ struct qla_tgt_mgmt_cmd, se_cmd);
+ qla_tgt_free_mcmd(mcmd);
+ return;
+ }
+
+ cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+ qla_tgt_free_cmd(cmd);
+}
+
+int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
+{
+ struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
+ struct scsi_qla_host *vha;
+ unsigned long flags;
+
+ BUG_ON(!sess);
+ vha = sess->vha;
+
+ spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+ sess->tearing_down = 1;
+ target_splice_sess_cmd_list(se_sess);
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+
+ return 1;
+}
+
+void tcm_qla2xxx_close_session(struct se_session *se_sess)
+{
+ struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
+ struct scsi_qla_host *vha;
+ unsigned long flags;
+
+ BUG_ON(!sess);
+ vha = sess->vha;
+
+ spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+ qla_tgt_unreg_sess(sess);
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+}
+
+u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
+{
+ return 0;
+}
+
+/*
+ * The LIO target core uses DMA_TO_DEVICE to mean that data is going
+ * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
+ * that data is coming from the target (eg handling a READ). However,
+ * this is just the opposite of what we have to tell the DMA mapping
+ * layer -- eg when handling a READ, the HBA will have to DMA the data
+ * out of memory so it can send it to the initiator, which means we
+ * need to use DMA_TO_DEVICE when we map the data.
+ */
+static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd)
+{
+ if (se_cmd->se_cmd_flags & SCF_BIDI)
+ return DMA_BIDIRECTIONAL;
+
+ switch (se_cmd->data_direction) {
+ case DMA_TO_DEVICE:
+ return DMA_FROM_DEVICE;
+ case DMA_FROM_DEVICE:
+ return DMA_TO_DEVICE;
+ case DMA_NONE:
+ default:
+ return DMA_NONE;
+ }
+}
+
+int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
+{
+ struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+
+ cmd->bufflen = se_cmd->data_length;
+ cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
+
+ /*
+ * Setup the struct se_task->task_sg[] chained SG list
+ */
+ transport_do_task_sg_chain(se_cmd);
+ cmd->sg_cnt = se_cmd->t_tasks_sg_chained_no;
+ cmd->sg = se_cmd->t_tasks_sg_chained;
+
+ /*
+ * qla_target.c:qla_tgt_rdy_to_xfer() will call pci_map_sg() to setup
+ * the SGL mappings into PCIe memory for incoming FCP WRITE data.
+ */
+ return qla_tgt_rdy_to_xfer(cmd);
+}
+
+int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
+{
+ unsigned long flags;
+ /*
+ * Check for WRITE_PENDING status to determine if we need to wait for
+ * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
+ */
+ spin_lock_irqsave(&se_cmd->t_state_lock, flags);
+ if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
+ se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
+ spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
+ wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 3000);
+ return 0;
+ }
+ spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
+
+ return 0;
+}
+
+void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
+{
+ return;
+}
+
+u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
+{
+ struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+
+ return cmd->tag;
+}
+
+int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
+{
+ return 0;
+}
+
+/*
+ * Called from process context in qla_target.c:qla_tgt_do_work() code
+ */
+int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
+ unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
+ int data_dir, int bidi)
+{
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+ struct se_session *se_sess;
+ struct qla_tgt_sess *sess;
+ int flags = TARGET_SCF_ACK_KREF;
+
+ if (bidi)
+ flags |= TARGET_SCF_BIDI_OP;
+
+ sess = cmd->sess;
+ if (!sess) {
+ pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
+ return -EINVAL;
+ }
+
+ se_sess = sess->se_sess;
+ if (!se_sess) {
+ pr_err("Unable to locate active struct se_session\n");
+ return -EINVAL;
+ }
+
+ target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
+ cmd->unpacked_lun, data_length, fcp_task_attr,
+ data_dir, flags);
+ return 0;
+}
+
+void tcm_qla2xxx_do_rsp(struct work_struct *work)
+{
+ struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
+ /*
+ * Dispatch ->queue_status from workqueue process context
+ */
+ transport_generic_request_failure(&cmd->se_cmd);
+}
+
+/*
+ * Called from qla_target.c:qla_tgt_do_ctio_completion()
+ */
+int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
+{
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+ unsigned long flags;
+ /*
+ * Ensure that the complete FCP WRITE payload has been received.
+ * Otherwise return an exception via CHECK_CONDITION status.
+ */
+ if (!cmd->write_data_transferred) {
+ /*
+ * Check if se_cmd has already been aborted via LUN_RESET, and is
+ * waiting upon completion in tcm_qla2xxx_write_pending_status()..
+ */
+ spin_lock_irqsave(&se_cmd->t_state_lock, flags);
+ if (se_cmd->transport_state & CMD_T_ABORTED) {
+ spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
+ complete(&se_cmd->t_transport_stop_comp);
+ return 0;
+ }
+ spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
+
+ se_cmd->scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
+ INIT_WORK(&cmd->work, tcm_qla2xxx_do_rsp);
+ queue_work(tcm_qla2xxx_free_wq, &cmd->work);
+ return 0;
+ }
+ /*
+ * We now tell TCM to queue this WRITE CDB with TRANSPORT_PROCESS_WRITE
+ * status to the backstore processing thread.
+ */
+ return transport_generic_handle_data(&cmd->se_cmd);
+}
+
+/*
+ * Called from qla_target.c:qla_tgt_issue_task_mgmt()
+ */
+int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
+ uint8_t tmr_func, uint32_t tag)
+{
+ struct qla_tgt_sess *sess = mcmd->sess;
+ struct se_cmd *se_cmd = &mcmd->se_cmd;
+
+ return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
+ tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
+}
+
+int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
+{
+ struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+
+ cmd->bufflen = se_cmd->data_length;
+ cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
+ cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
+
+ /*
+ * Setup the struct se_task->task_sg[] chained SG list
+ */
+ transport_do_task_sg_chain(se_cmd);
+ cmd->sg_cnt = se_cmd->t_tasks_sg_chained_no;
+ cmd->sg = se_cmd->t_tasks_sg_chained;
+ cmd->offset = 0;
+
+ /*
+ * Now queue completed DATA_IN the qla2xxx LLD and response ring
+ */
+ return qla_tgt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
+ se_cmd->scsi_status);
+}
+
+int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
+{
+ struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+ int xmit_type = QLA_TGT_XMIT_STATUS;
+
+ cmd->bufflen = se_cmd->data_length;
+ cmd->sg = NULL;
+ cmd->sg_cnt = 0;
+ cmd->offset = 0;
+ cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
+ cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
+
+ if (se_cmd->data_direction == DMA_FROM_DEVICE) {
+ /*
+ * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
+ * for qla_tgt_xmit_response LLD code
+ */
+ se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
+ se_cmd->residual_count = se_cmd->data_length;
+
+ cmd->bufflen = 0;
+ }
+ /*
+ * Now queue status response to qla2xxx LLD code and response ring
+ */
+ return qla_tgt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
+}
+
+int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
+{
+ struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
+ struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
+ struct qla_tgt_mgmt_cmd, se_cmd);
+
+ pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
+ mcmd, se_tmr->function, se_tmr->response);
+ /*
+ * Do translation between TCM TM response codes and
+ * QLA2xxx FC TM response codes.
+ */
+ switch (se_tmr->response) {
+ case TMR_FUNCTION_COMPLETE:
+ mcmd->fc_tm_rsp = FC_TM_SUCCESS;
+ break;
+ case TMR_TASK_DOES_NOT_EXIST:
+ mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
+ break;
+ case TMR_FUNCTION_REJECTED:
+ mcmd->fc_tm_rsp = FC_TM_REJECT;
+ break;
+ case TMR_LUN_DOES_NOT_EXIST:
+ default:
+ mcmd->fc_tm_rsp = FC_TM_FAILED;
+ break;
+ }
+ /*
+ * Queue the TM response to QLA2xxx LLD to build a
+ * CTIO response packet.
+ */
+ qla_tgt_xmit_tm_rsp(mcmd);
+
+ return 0;
+}
+
+u16 tcm_qla2xxx_get_fabric_sense_len(void)
+{
+ return 0;
+}
+
+u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length)
+{
+ return 0;
+}
+
+/* Local pointer to allocated TCM configfs fabric module */
+struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
+struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
+
+struct workqueue_struct *tcm_qla2xxx_free_wq;
+struct workqueue_struct *tcm_qla2xxx_cmd_wq;
+
+static int tcm_qla2xxx_setup_nacl_from_rport(
+ struct se_portal_group *se_tpg,
+ struct se_node_acl *se_nacl,
+ struct tcm_qla2xxx_lport *lport,
+ struct tcm_qla2xxx_nacl *nacl,
+ u64 rport_wwnn)
+{
+ struct scsi_qla_host *vha = lport->qla_vha;
+ struct Scsi_Host *sh = vha->host;
+ struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
+ struct fc_rport *rport;
+ struct tcm_qla2xxx_fc_domain *d;
+ struct tcm_qla2xxx_fc_area *a;
+ struct tcm_qla2xxx_fc_al_pa *p;
+ unsigned long flags;
+ unsigned char domain, area, al_pa;
+ /*
+ * Scan the existing rports, and create a session for the
+ * explict NodeACL is an matching rport->node_name already
+ * exists.
+ */
+ spin_lock_irqsave(sh->host_lock, flags);
+ list_for_each_entry(rport, &fc_host->rports, peers) {
+ if (rport_wwnn != rport->node_name)
+ continue;
+
+ pr_debug("Located existing rport_wwpn and rport->node_name:"
+ " 0x%016LX, port_id: 0x%04x\n", rport->node_name,
+ rport->port_id);
+ domain = (rport->port_id >> 16) & 0xff;
+ area = (rport->port_id >> 8) & 0xff;
+ al_pa = rport->port_id & 0xff;
+ nacl->nport_id = rport->port_id;
+
+ pr_debug("fc_rport domain: 0x%02x area: 0x%02x al_pa: %02x\n",
+ domain, area, al_pa);
+ spin_unlock_irqrestore(sh->host_lock, flags);
+
+
+ spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+ d = &((struct tcm_qla2xxx_fc_domain *)lport->lport_fcport_map)[domain];
+ pr_debug("Using d: %p for domain: 0x%02x\n", d, domain);
+ a = &d->areas[area];
+ pr_debug("Using a: %p for area: 0x%02x\n", a, area);
+ p = &a->al_pas[al_pa];
+ pr_debug("Using p: %p for al_pa: 0x%02x\n", p, al_pa);
+
+ p->se_nacl = se_nacl;
+ pr_debug("Setting p->se_nacl to se_nacl: %p for WWNN: 0x%016LX,"
+ " port_id: 0x%08x\n", se_nacl, rport_wwnn,
+ nacl->nport_id);
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+
+ return 1;
+ }
+ spin_unlock_irqrestore(sh->host_lock, flags);
+
+ return 0;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
+{
+ struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
+ struct se_portal_group *se_tpg = se_nacl->se_tpg;
+ struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
+ struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
+ struct tcm_qla2xxx_nacl, se_node_acl);
+ struct tcm_qla2xxx_fc_domain *d;
+ struct tcm_qla2xxx_fc_area *a;
+ struct tcm_qla2xxx_fc_al_pa *p;
+ unsigned char domain, area, al_pa;
+
+ domain = (nacl->nport_id >> 16) & 0xff;
+ area = (nacl->nport_id >> 8) & 0xff;
+ al_pa = nacl->nport_id & 0xff;
+
+ pr_debug("fc_rport domain: 0x%02x area: 0x%02x al_pa: %02x\n",
+ domain, area, al_pa);
+
+ d = &((struct tcm_qla2xxx_fc_domain *)lport->lport_fcport_map)[domain];
+ pr_debug("Using d: %p for domain: 0x%02x\n", d, domain);
+ a = &d->areas[area];
+ pr_debug("Using a: %p for area: 0x%02x\n", a, area);
+ p = &a->al_pas[al_pa];
+ pr_debug("Using p: %p for al_pa: 0x%02x\n", p, al_pa);
+
+ p->se_nacl = NULL;
+ pr_debug("Clearing p->se_nacl to se_nacl: %p for WWNN: 0x%016LX,"
+ " port_id: 0x%08x\n", se_nacl, nacl->nport_wwnn,
+ nacl->nport_id);
+}
+
+void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
+{
+ target_put_session(sess->se_sess);
+}
+
+static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
+ struct se_portal_group *se_tpg,
+ struct config_group *group,
+ const char *name)
+{
+ struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
+ struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct se_node_acl *se_nacl, *se_nacl_new;
+ struct tcm_qla2xxx_nacl *nacl;
+ u64 wwnn;
+ u32 qla2xxx_nexus_depth;
+ int rc;
+
+ if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
+ return ERR_PTR(-EINVAL);
+
+ se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
+ if (!se_nacl_new)
+ return ERR_PTR(-ENOMEM);
+//#warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl()
+ qla2xxx_nexus_depth = 1;
+
+ /*
+ * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
+ * when converting a NodeACL from demo mode -> explict
+ */
+ se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
+ name, qla2xxx_nexus_depth);
+ if (IS_ERR(se_nacl)) {
+ tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
+ return se_nacl;
+ }
+ /*
+ * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
+ */
+ nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+ nacl->nport_wwnn = wwnn;
+ tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
+ /*
+ * Setup a se_nacl handle based on an a matching struct fc_rport setup
+ * via drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
+ */
+ rc = tcm_qla2xxx_setup_nacl_from_rport(se_tpg, se_nacl, lport,
+ nacl, wwnn);
+ if (rc < 0) {
+ tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
+ return ERR_PTR(rc);
+ }
+
+ return se_nacl;;
+}
+
+static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
+{
+ struct se_portal_group *se_tpg = se_acl->se_tpg;
+ struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
+ struct tcm_qla2xxx_nacl, se_node_acl);
+
+ core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
+ kfree(nacl);
+}
+
+/* Start items for tcm_qla2xxx_tpg_attrib_cit */
+
+#define DEF_QLA_TPG_ATTRIB(name) \
+ \
+static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
+ struct se_portal_group *se_tpg, \
+ char *page) \
+{ \
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
+ struct tcm_qla2xxx_tpg, se_tpg); \
+ \
+ return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name); \
+} \
+ \
+static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
+ struct se_portal_group *se_tpg, \
+ const char *page, \
+ size_t count) \
+{ \
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
+ struct tcm_qla2xxx_tpg, se_tpg); \
+ unsigned long val; \
+ int ret; \
+ \
+ ret = strict_strtoul(page, 0, &val); \
+ if (ret < 0) { \
+ pr_err("strict_strtoul() failed with" \
+ " ret: %d\n", ret); \
+ return -EINVAL; \
+ } \
+ ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
+ \
+ return (!ret) ? count : -EINVAL; \
+}
+
+#define DEF_QLA_TPG_ATTR_BOOL(_name) \
+ \
+static int tcm_qla2xxx_set_attrib_##_name( \
+ struct tcm_qla2xxx_tpg *tpg, \
+ unsigned long val) \
+{ \
+ struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
+ \
+ if ((val != 0) && (val != 1)) { \
+ pr_err("Illegal boolean value %lu\n", val); \
+ return -EINVAL; \
+ } \
+ \
+ a->_name = val; \
+ return 0; \
+}
+
+#define QLA_TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
+
+/*
+ * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
+ */
+DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
+DEF_QLA_TPG_ATTRIB(generate_node_acls);
+QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
+
+/*
+ Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
+ */
+DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
+DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
+QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
+
+/*
+ * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
+ */
+DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
+DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
+QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
+
+/*
+ * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
+ */
+DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
+DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
+QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
+
+static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
+ &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
+ &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
+ &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
+ &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
+ NULL,
+};
+
+/* End items for tcm_qla2xxx_tpg_attrib_cit */
+
+static ssize_t tcm_qla2xxx_tpg_show_enable(
+ struct se_portal_group *se_tpg,
+ char *page)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+
+ return snprintf(page, PAGE_SIZE, "%d\n",
+ atomic_read(&tpg->lport_tpg_enabled));
+}
+
+static ssize_t tcm_qla2xxx_tpg_store_enable(
+ struct se_portal_group *se_tpg,
+ const char *page,
+ size_t count)
+{
+ struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
+ struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct scsi_qla_host *vha = lport->qla_vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ char *endptr;
+ u32 op;
+
+ op = simple_strtoul(page, &endptr, 0);
+ if ((op != 1) && (op != 0)) {
+ pr_err("Illegal value for tpg_enable: %u\n", op);
+ return -EINVAL;
+ }
+
+ if (op) {
+ atomic_set(&tpg->lport_tpg_enabled, 1);
+ qla_tgt_enable_vha(vha);
+ } else {
+ if (!ha->qla_tgt) {
+ pr_err("truct qla_hw_data *ha->qla_tgt is NULL\n");
+ return -ENODEV;
+ }
+ atomic_set(&tpg->lport_tpg_enabled, 0);
+ qla_tgt_stop_phase1(ha->qla_tgt);
+ }
+
+ return count;
+}
+
+TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
+
+static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
+ &tcm_qla2xxx_tpg_enable.attr,
+ NULL,
+};
+
+static struct se_portal_group *tcm_qla2xxx_make_tpg(
+ struct se_wwn *wwn,
+ struct config_group *group,
+ const char *name)
+{
+ struct tcm_qla2xxx_lport *lport = container_of(wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct tcm_qla2xxx_tpg *tpg;
+ unsigned long tpgt;
+ int ret;
+
+ if (strstr(name, "tpgt_") != name)
+ return ERR_PTR(-EINVAL);
+ if (strict_strtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
+ return ERR_PTR(-EINVAL);
+
+ if (!lport->qla_npiv_vp && (tpgt != 1)) {
+ pr_err("In non NPIV mode, a single TPG=1 is used for"
+ " HW port mappings\n");
+ return ERR_PTR(-ENOSYS);
+ }
+
+ tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
+ if (!tpg) {
+ pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ tpg->lport = lport;
+ tpg->lport_tpgt = tpgt;
+ /*
+ * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic NodeACLs
+ */
+ QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
+ QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
+ QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
+
+ ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
+ &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
+ if (ret < 0) {
+ kfree(tpg);
+ return NULL;
+ }
+ /*
+ * Setup local TPG=1 pointer for non NPIV mode.
+ */
+ if (lport->qla_npiv_vp == NULL)
+ lport->tpg_1 = tpg;
+
+ return &tpg->se_tpg;
+}
+
+static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+ struct scsi_qla_host *vha = lport->qla_vha;
+ struct qla_hw_data *ha = vha->hw;
+ /*
+ * Call into qla2x_target.c LLD logic to shutdown the active
+ * FC Nexuses and disable target mode operation for this qla_hw_data
+ */
+ if (ha->qla_tgt && !ha->qla_tgt->tgt_stop)
+ qla_tgt_stop_phase1(ha->qla_tgt);
+
+ core_tpg_deregister(se_tpg);
+ /*
+ * Clear local TPG=1 pointer for non NPIV mode.
+ */
+ if (lport->qla_npiv_vp == NULL)
+ lport->tpg_1 = NULL;
+
+ kfree(tpg);
+}
+
+static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
+ struct se_wwn *wwn,
+ struct config_group *group,
+ const char *name)
+{
+ struct tcm_qla2xxx_lport *lport = container_of(wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct tcm_qla2xxx_tpg *tpg;
+ unsigned long tpgt;
+ int ret;
+
+ if (strstr(name, "tpgt_") != name)
+ return ERR_PTR(-EINVAL);
+ if (strict_strtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
+ return ERR_PTR(-EINVAL);
+
+ tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
+ if (!tpg) {
+ pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ tpg->lport = lport;
+ tpg->lport_tpgt = tpgt;
+
+ ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
+ &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
+ if (ret < 0) {
+ kfree(tpg);
+ return NULL;
+ }
+ return &tpg->se_tpg;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
+ scsi_qla_host_t *vha,
+ const uint8_t *s_id)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct tcm_qla2xxx_lport *lport;
+ struct se_node_acl *se_nacl;
+ struct tcm_qla2xxx_nacl *nacl;
+ struct tcm_qla2xxx_fc_domain *d;
+ struct tcm_qla2xxx_fc_area *a;
+ struct tcm_qla2xxx_fc_al_pa *p;
+ unsigned char domain, area, al_pa;
+
+ lport = ha->target_lport_ptr;
+ if (!lport) {
+ pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
+ dump_stack();
+ return NULL;
+ }
+
+ domain = s_id[0];
+ area = s_id[1];
+ al_pa = s_id[2];
+
+ pr_debug("find_sess_by_s_id: 0x%02x area: 0x%02x al_pa: %02x\n",
+ domain, area, al_pa);
+
+ d = &((struct tcm_qla2xxx_fc_domain *)lport->lport_fcport_map)[domain];
+ pr_debug("Using d: %p for domain: 0x%02x\n", d, domain);
+ a = &d->areas[area];
+ pr_debug("Using a: %p for area: 0x%02x\n", a, area);
+ p = &a->al_pas[al_pa];
+ pr_debug("Using p: %p for al_pa: 0x%02x\n", p, al_pa);
+
+ se_nacl = p->se_nacl;
+ if (!se_nacl) {
+ pr_debug("Unable to locate s_id: 0x%02x area: 0x%02x"
+ " al_pa: %02x\n", domain, area, al_pa);
+ return NULL;
+ }
+ pr_debug("find_sess_by_s_id: located se_nacl: %p,"
+ " initiatorname: %s\n", se_nacl, se_nacl->initiatorname);
+
+ nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+ if (!nacl->qla_tgt_sess) {
+ pr_err("Unable to locate struct qla_tgt_sess\n");
+ return NULL;
+ }
+
+ return nacl->qla_tgt_sess;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static void tcm_qla2xxx_set_sess_by_s_id(
+ struct tcm_qla2xxx_lport *lport,
+ struct se_node_acl *new_se_nacl,
+ struct tcm_qla2xxx_nacl *nacl,
+ struct se_session *se_sess,
+ struct qla_tgt_sess *qla_tgt_sess,
+ uint8_t *s_id)
+{
+ struct se_node_acl *saved_nacl;
+ struct tcm_qla2xxx_fc_domain *d;
+ struct tcm_qla2xxx_fc_area *a;
+ struct tcm_qla2xxx_fc_al_pa *p;
+ unsigned char domain, area, al_pa;
+
+ domain = s_id[0];
+ area = s_id[1];
+ al_pa = s_id[2];
+ pr_debug("set_sess_by_s_id: domain 0x%02x area: 0x%02x al_pa: %02x\n",
+ domain, area, al_pa);
+
+ d = &((struct tcm_qla2xxx_fc_domain *)lport->lport_fcport_map)[domain];
+ pr_debug("Using d: %p for domain: 0x%02x\n", d, domain);
+ a = &d->areas[area];
+ pr_debug("Using a: %p for area: 0x%02x\n", a, area);
+ p = &a->al_pas[al_pa];
+ pr_debug("Using p: %p for al_pa: 0x%02x\n", p, al_pa);
+
+ saved_nacl = p->se_nacl;
+ if (!saved_nacl) {
+ pr_debug("Setting up new p->se_nacl to new_se_nacl\n");
+ p->se_nacl = new_se_nacl;
+ qla_tgt_sess->se_sess = se_sess;
+ nacl->qla_tgt_sess = qla_tgt_sess;
+ return;
+ }
+
+ if (nacl->qla_tgt_sess) {
+ if (new_se_nacl == NULL) {
+ pr_debug("Clearing existing nacl->qla_tgt_sess"
+ " and p->se_nacl\n");
+ p->se_nacl = NULL;
+ nacl->qla_tgt_sess = NULL;
+ return;
+ }
+ pr_debug("Replacing existing nacl->qla_tgt_sess and"
+ " p->se_nacl\n");
+ p->se_nacl = new_se_nacl;
+ qla_tgt_sess->se_sess = se_sess;
+ nacl->qla_tgt_sess = qla_tgt_sess;
+ return;
+ }
+
+ if (new_se_nacl == NULL) {
+ pr_debug("Clearing existing p->se_nacl\n");
+ p->se_nacl = NULL;
+ return;
+ }
+
+ pr_debug("Replacing existing p->se_nacl w/o active"
+ " nacl->qla_tgt_sess\n");
+ p->se_nacl = new_se_nacl;
+ qla_tgt_sess->se_sess = se_sess;
+ nacl->qla_tgt_sess = qla_tgt_sess;
+
+ pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p,"
+ " initiatorname: %s\n", nacl->qla_tgt_sess, new_se_nacl,
+ new_se_nacl->initiatorname);
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
+ scsi_qla_host_t *vha,
+ const uint16_t loop_id)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct tcm_qla2xxx_lport *lport;
+ struct se_node_acl *se_nacl;
+ struct tcm_qla2xxx_nacl *nacl;
+ struct tcm_qla2xxx_fc_loopid *fc_loopid;
+
+ lport = ha->target_lport_ptr;
+ if (!lport) {
+ pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
+ dump_stack();
+ return NULL;
+ }
+
+ pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
+
+ fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)lport->lport_loopid_map)[loop_id];
+
+ se_nacl = fc_loopid->se_nacl;
+ if (!se_nacl) {
+ pr_debug("Unable to locate se_nacl by loop_id:"
+ " 0x%04x\n", loop_id);
+ return NULL;
+ }
+
+ nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+
+ if (!nacl->qla_tgt_sess) {
+ pr_err("Unable to locate struct qla_tgt_sess\n");
+ return NULL;
+ }
+
+ return nacl->qla_tgt_sess;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static void tcm_qla2xxx_set_sess_by_loop_id(
+ struct tcm_qla2xxx_lport *lport,
+ struct se_node_acl *new_se_nacl,
+ struct tcm_qla2xxx_nacl *nacl,
+ struct se_session *se_sess,
+ struct qla_tgt_sess *qla_tgt_sess,
+ uint16_t loop_id)
+{
+ struct se_node_acl *saved_nacl;
+ struct tcm_qla2xxx_fc_loopid *fc_loopid;
+
+ pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
+
+ fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)lport->lport_loopid_map)[loop_id];
+
+ saved_nacl = fc_loopid->se_nacl;
+ if (!saved_nacl) {
+ pr_debug("Setting up new fc_loopid->se_nacl"
+ " to new_se_nacl\n");
+ fc_loopid->se_nacl = new_se_nacl;
+ if (qla_tgt_sess->se_sess != se_sess)
+ qla_tgt_sess->se_sess = se_sess;
+ if (nacl->qla_tgt_sess != qla_tgt_sess)
+ nacl->qla_tgt_sess = qla_tgt_sess;
+ return;
+ }
+
+ if (nacl->qla_tgt_sess) {
+ if (new_se_nacl == NULL) {
+ pr_debug("Clearing nacl->qla_tgt_sess and"
+ " fc_loopid->se_nacl\n");
+ fc_loopid->se_nacl = NULL;
+ nacl->qla_tgt_sess = NULL;
+ return;
+ }
+
+ pr_debug("Replacing existing nacl->qla_tgt_sess and"
+ " fc_loopid->se_nacl\n");
+ fc_loopid->se_nacl = new_se_nacl;
+ if (qla_tgt_sess->se_sess != se_sess)
+ qla_tgt_sess->se_sess = se_sess;
+ if (nacl->qla_tgt_sess != qla_tgt_sess)
+ nacl->qla_tgt_sess = qla_tgt_sess;
+ return;
+ }
+
+ if (new_se_nacl == NULL) {
+ pr_debug("Clearing fc_loopid->se_nacl\n");
+ fc_loopid->se_nacl = NULL;
+ return;
+ }
+
+ pr_debug("Replacing existing fc_loopid->se_nacl w/o"
+ " active nacl->qla_tgt_sess\n");
+ fc_loopid->se_nacl = new_se_nacl;
+ if (qla_tgt_sess->se_sess != se_sess)
+ qla_tgt_sess->se_sess = se_sess;
+ if (nacl->qla_tgt_sess != qla_tgt_sess)
+ nacl->qla_tgt_sess = qla_tgt_sess;
+
+ pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p,"
+ " initiatorname: %s\n", nacl->qla_tgt_sess, new_se_nacl,
+ new_se_nacl->initiatorname);
+}
+
+static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
+{
+ struct qla_tgt *tgt = sess->tgt;
+ struct qla_hw_data *ha = tgt->ha;
+ struct se_session *se_sess;
+ struct se_node_acl *se_nacl;
+ struct tcm_qla2xxx_lport *lport;
+ struct tcm_qla2xxx_nacl *nacl;
+ unsigned char be_sid[3];
+ unsigned long flags;
+
+ BUG_ON(in_interrupt());
+
+ se_sess = sess->se_sess;
+ if (!se_sess) {
+ pr_err("struct qla_tgt_sess->se_sess is NULL\n");
+ dump_stack();
+ return;
+ }
+ se_nacl = se_sess->se_node_acl;
+ nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+
+ lport = ha->target_lport_ptr;
+ if (!lport) {
+ pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
+ dump_stack();
+ return;
+ }
+ target_wait_for_sess_cmds(se_sess, 0);
+ /*
+ * And now clear the se_nacl and session pointers from our HW lport
+ * mappings for fabric S_ID and LOOP_ID.
+ */
+ memset(&be_sid, 0, 3);
+ 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;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
+ sess, be_sid);
+ tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
+ sess, sess->loop_id);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ transport_deregister_session_configfs(sess->se_sess);
+ transport_deregister_session(sess->se_sess);
+}
+
+/*
+ * Called via qla_tgt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
+ * to locate struct se_node_acl
+ */
+static int tcm_qla2xxx_check_initiator_node_acl(
+ scsi_qla_host_t *vha,
+ unsigned char *fc_wwpn,
+ void *qla_tgt_sess,
+ uint8_t *s_id,
+ uint16_t loop_id)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct tcm_qla2xxx_lport *lport;
+ struct tcm_qla2xxx_tpg *tpg;
+ struct tcm_qla2xxx_nacl *nacl;
+ struct se_portal_group *se_tpg;
+ struct se_node_acl *se_nacl;
+ struct se_session *se_sess;
+ struct qla_tgt_sess *sess = qla_tgt_sess;
+ unsigned char port_name[36];
+ unsigned long flags;
+
+ lport = ha->target_lport_ptr;
+ if (!lport) {
+ pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
+ dump_stack();
+ return -EINVAL;
+ }
+ /*
+ * Locate the TPG=1 reference..
+ */
+ tpg = lport->tpg_1;
+ if (!tpg) {
+ pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
+ return -EINVAL;
+ }
+ se_tpg = &tpg->se_tpg;
+
+ se_sess = transport_init_session();
+ if (IS_ERR(se_sess)) {
+ pr_err("Unable to initialize struct se_session\n");
+ return PTR_ERR(se_sess);
+ }
+ /*
+ * Format the FCP Initiator port_name into colon seperated values to match
+ * the format by tcm_qla2xxx explict ConfigFS NodeACLs.
+ */
+ memset(&port_name, 0, 36);
+ snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
+ fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
+ fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
+ /*
+ * Locate our struct se_node_acl either from an explict NodeACL created
+ * via ConfigFS, or via running in TPG demo mode.
+ */
+ se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, port_name);
+ if (!se_sess->se_node_acl) {
+ transport_free_session(se_sess);
+ return -EINVAL;
+ }
+ se_nacl = se_sess->se_node_acl;
+ nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+ /*
+ * And now setup the new se_nacl and session pointers into our HW lport
+ * mappings for fabric S_ID and LOOP_ID.
+ */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
+ qla_tgt_sess, s_id);
+ tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
+ qla_tgt_sess, loop_id);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ /*
+ * Finally register the new FC Nexus with TCM
+ */
+ __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
+
+ return 0;
+}
+
+/*
+ * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
+ */
+static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
+ .handle_cmd = tcm_qla2xxx_handle_cmd,
+ .handle_data = tcm_qla2xxx_handle_data,
+ .handle_tmr = tcm_qla2xxx_handle_tmr,
+ .free_cmd = tcm_qla2xxx_free_cmd,
+ .free_mcmd = tcm_qla2xxx_free_mcmd,
+ .free_session = tcm_qla2xxx_free_session,
+ .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
+ .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
+ .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
+ .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
+ .put_sess = tcm_qla2xxx_put_sess,
+};
+
+static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
+{
+ lport->lport_fcport_map = vmalloc(
+ sizeof(struct tcm_qla2xxx_fc_domain) * 256);
+ if (!lport->lport_fcport_map) {
+ pr_err("Unable to allocate lport_fcport_map of %lu"
+ " bytes\n", sizeof(struct tcm_qla2xxx_fc_domain) * 256);
+ return -ENOMEM;
+ }
+ memset(lport->lport_fcport_map, 0,
+ sizeof(struct tcm_qla2xxx_fc_domain) * 256);
+ pr_debug("qla2xxx: Allocated lport_fcport_map of %lu bytes\n",
+ sizeof(struct tcm_qla2xxx_fc_domain) * 256);
+
+ lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
+ 65536);
+ if (!lport->lport_loopid_map) {
+ pr_err("Unable to allocate lport->lport_loopid_map"
+ " of %lu bytes\n", sizeof(struct tcm_qla2xxx_fc_loopid)
+ * 65536);
+ vfree(lport->lport_fcport_map);
+ return -ENOMEM;
+ }
+ memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
+ * 65536);
+ pr_debug("qla2xxx: Allocated lport_loopid_map of %lu bytes\n",
+ sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
+ return 0;
+}
+
+static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct tcm_qla2xxx_lport *lport;
+ /*
+ * Setup local pointer to vha, NPIV VP pointer (if present) and
+ * vha->tcm_lport pointer
+ */
+ lport = (struct tcm_qla2xxx_lport *)ha->target_lport_ptr;
+ lport->qla_vha = vha;
+
+ return 0;
+}
+
+static struct se_wwn *tcm_qla2xxx_make_lport(
+ struct target_fabric_configfs *tf,
+ struct config_group *group,
+ const char *name)
+{
+ struct tcm_qla2xxx_lport *lport;
+ u64 wwpn;
+ int ret = -ENODEV;
+
+ if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
+ return ERR_PTR(-EINVAL);
+
+ lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
+ if (!lport) {
+ pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ lport->lport_wwpn = wwpn;
+ tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, wwpn);
+
+ ret = tcm_qla2xxx_init_lport(lport);
+ if (ret != 0)
+ goto out;
+
+ ret = qla_tgt_lport_register(&tcm_qla2xxx_template, wwpn,
+ tcm_qla2xxx_lport_register_cb, lport);
+ if (ret != 0)
+ goto out_lport;
+
+ return &lport->lport_wwn;
+out_lport:
+ vfree(lport->lport_loopid_map);
+ vfree(lport->lport_fcport_map);
+out:
+ kfree(lport);
+ return ERR_PTR(ret);
+}
+
+static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
+{
+ struct tcm_qla2xxx_lport *lport = container_of(wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct scsi_qla_host *vha = lport->qla_vha;
+ struct qla_hw_data *ha = vha->hw;
+ /*
+ * Call into qla2x_target.c LLD logic to complete the
+ * shutdown of struct qla_tgt after the call to
+ * qla_tgt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
+ */
+ if (ha->qla_tgt && !ha->qla_tgt->tgt_stopped)
+ qla_tgt_stop_phase2(ha->qla_tgt);
+
+ qla_tgt_lport_deregister(vha);
+
+ vfree(lport->lport_loopid_map);
+ vfree(lport->lport_fcport_map);
+ kfree(lport);
+}
+
+static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
+ struct target_fabric_configfs *tf,
+ struct config_group *group,
+ const char *name)
+{
+ struct tcm_qla2xxx_lport *lport;
+ u64 npiv_wwpn, npiv_wwnn;
+ int ret;
+
+ if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
+ &npiv_wwpn, &npiv_wwnn) < 0)
+ return ERR_PTR(-EINVAL);
+
+ lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
+ if (!lport) {
+ pr_err("Unable to allocate struct tcm_qla2xxx_lport"
+ " for NPIV\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ lport->lport_npiv_wwpn = npiv_wwpn;
+ lport->lport_npiv_wwnn = npiv_wwnn;
+ tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
+ TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
+
+/* FIXME: tcm_qla2xxx_npiv_make_lport */
+ ret = -ENOSYS;
+ if (ret != 0)
+ goto out;
+
+ return &lport->lport_wwn;
+out:
+ kfree(lport);
+ return ERR_PTR(ret);
+}
+
+static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
+{
+ struct tcm_qla2xxx_lport *lport = container_of(wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct scsi_qla_host *vha = lport->qla_vha;
+ struct Scsi_Host *sh = vha->host;
+ /*
+ * Notify libfc that we want to release the lport->npiv_vport
+ */
+ fc_vport_terminate(lport->npiv_vport);
+
+ scsi_host_put(sh);
+ kfree(lport);
+}
+
+
+static ssize_t tcm_qla2xxx_wwn_show_attr_version(
+ struct target_fabric_configfs *tf,
+ char *page)
+{
+ return sprintf(page, "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s"
+ " on "UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
+ utsname()->machine);
+}
+
+TF_WWN_ATTR_RO(tcm_qla2xxx, version);
+
+static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
+ &tcm_qla2xxx_wwn_version.attr,
+ NULL,
+};
+
+static struct target_core_fabric_ops tcm_qla2xxx_ops = {
+ .get_fabric_name = tcm_qla2xxx_get_fabric_name,
+ .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
+ .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
+ .tpg_get_tag = tcm_qla2xxx_get_tag,
+ .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
+ .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
+ .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
+ .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
+ .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
+ .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
+ .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_write_protect,
+ .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_prod_write_protect,
+ .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
+ .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
+ .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
+ .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
+ .new_cmd_map = NULL,
+ .check_stop_free = tcm_qla2xxx_check_stop_free,
+ .release_cmd = tcm_qla2xxx_release_cmd,
+ .shutdown_session = tcm_qla2xxx_shutdown_session,
+ .close_session = tcm_qla2xxx_close_session,
+ .sess_get_index = tcm_qla2xxx_sess_get_index,
+ .sess_get_initiator_sid = NULL,
+ .write_pending = tcm_qla2xxx_write_pending,
+ .write_pending_status = tcm_qla2xxx_write_pending_status,
+ .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
+ .get_task_tag = tcm_qla2xxx_get_task_tag,
+ .get_cmd_state = tcm_qla2xxx_get_cmd_state,
+ .queue_data_in = tcm_qla2xxx_queue_data_in,
+ .queue_status = tcm_qla2xxx_queue_status,
+ .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
+ .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len,
+ .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len,
+ /*
+ * Setup function pointers for generic logic in target_core_fabric_configfs.c
+ */
+ .fabric_make_wwn = tcm_qla2xxx_make_lport,
+ .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
+ .fabric_make_tpg = tcm_qla2xxx_make_tpg,
+ .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
+ .fabric_post_link = NULL,
+ .fabric_pre_unlink = NULL,
+ .fabric_make_np = NULL,
+ .fabric_drop_np = NULL,
+ .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
+ .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
+};
+
+static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
+ .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
+ .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
+ .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn,
+ .tpg_get_tag = tcm_qla2xxx_get_tag,
+ .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
+ .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
+ .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
+ .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
+ .tpg_check_demo_mode = tcm_qla2xxx_check_false,
+ .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true,
+ .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
+ .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
+ .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
+ .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
+ .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
+ .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
+ .release_cmd = tcm_qla2xxx_release_cmd,
+ .shutdown_session = tcm_qla2xxx_shutdown_session,
+ .close_session = tcm_qla2xxx_close_session,
+ .sess_get_index = tcm_qla2xxx_sess_get_index,
+ .sess_get_initiator_sid = NULL,
+ .write_pending = tcm_qla2xxx_write_pending,
+ .write_pending_status = tcm_qla2xxx_write_pending_status,
+ .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
+ .get_task_tag = tcm_qla2xxx_get_task_tag,
+ .get_cmd_state = tcm_qla2xxx_get_cmd_state,
+ .queue_data_in = tcm_qla2xxx_queue_data_in,
+ .queue_status = tcm_qla2xxx_queue_status,
+ .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
+ .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len,
+ .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len,
+ /*
+ * Setup function pointers for generic logic in target_core_fabric_configfs.c
+ */
+ .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
+ .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
+ .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
+ .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
+ .fabric_post_link = NULL,
+ .fabric_pre_unlink = NULL,
+ .fabric_make_np = NULL,
+ .fabric_drop_np = NULL,
+ .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
+ .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
+};
+
+static int tcm_qla2xxx_register_configfs(void)
+{
+ struct target_fabric_configfs *fabric, *npiv_fabric;
+ int ret;
+
+ pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s"
+ " on "UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
+ utsname()->machine);
+ /*
+ * Register the top level struct config_item_type with TCM core
+ */
+ fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
+ if (IS_ERR(fabric)) {
+ pr_err("target_fabric_configfs_init() failed\n");
+ return PTR_ERR(fabric);
+ }
+ /*
+ * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
+ */
+ fabric->tf_ops = tcm_qla2xxx_ops;
+ /*
+ * Setup the struct se_task->task_sg[] chaining bit
+ */
+ fabric->tf_ops.task_sg_chaining = 1;
+ /*
+ * Setup default attribute lists for various fabric->tf_cit_tmpl
+ */
+ TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
+ TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
+ TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = tcm_qla2xxx_tpg_attrib_attrs;
+ TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
+ /*
+ * Register the fabric for use within TCM
+ */
+ ret = target_fabric_configfs_register(fabric);
+ if (ret < 0) {
+ pr_err("target_fabric_configfs_register() failed"
+ " for TCM_QLA2XXX\n");
+ return ret;
+ }
+ /*
+ * Setup our local pointer to *fabric
+ */
+ tcm_qla2xxx_fabric_configfs = fabric;
+ pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
+
+ /*
+ * Register the top level struct config_item_type for NPIV with TCM core
+ */
+ npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
+ if (IS_ERR(npiv_fabric)) {
+ pr_err("target_fabric_configfs_init() failed\n");
+ ret = PTR_ERR(npiv_fabric);
+ goto out_fabric;
+ }
+ /*
+ * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
+ */
+ npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
+ /*
+ * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
+ */
+ TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
+ /*
+ * Register the npiv_fabric for use within TCM
+ */
+ ret = target_fabric_configfs_register(npiv_fabric);
+ if (ret < 0) {
+ pr_err("target_fabric_configfs_register() failed"
+ " for TCM_QLA2XXX\n");
+ goto out_fabric;
+ }
+ /*
+ * Setup our local pointer to *npiv_fabric
+ */
+ tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
+ pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
+
+ tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
+ WQ_MEM_RECLAIM, 0);
+ if (!tcm_qla2xxx_free_wq) {
+ ret = -ENOMEM;
+ goto out_fabric_npiv;
+ }
+
+ tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
+ if (!tcm_qla2xxx_cmd_wq) {
+ ret = -ENOMEM;
+ goto out_free_wq;
+ }
+
+ return 0;
+
+out_free_wq:
+ destroy_workqueue(tcm_qla2xxx_free_wq);
+out_fabric_npiv:
+ target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
+out_fabric:
+ target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
+ return ret;
+}
+
+static void tcm_qla2xxx_deregister_configfs(void)
+{
+ destroy_workqueue(tcm_qla2xxx_cmd_wq);
+ destroy_workqueue(tcm_qla2xxx_free_wq);
+
+ target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
+ tcm_qla2xxx_fabric_configfs = NULL;
+ pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
+
+ target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
+ tcm_qla2xxx_npiv_fabric_configfs = NULL;
+ pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
+}
+
+static int __init tcm_qla2xxx_init(void)
+{
+ int ret;
+
+ ret = tcm_qla2xxx_register_configfs();
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static void __exit tcm_qla2xxx_exit(void)
+{
+ tcm_qla2xxx_deregister_configfs();
+}
+
+MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
+MODULE_LICENSE("GPL");
+module_init(tcm_qla2xxx_init);
+module_exit(tcm_qla2xxx_exit);
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.h b/drivers/scsi/qla2xxx/tcm_qla2xxx.h
new file mode 100644
index 0000000..41730ed
--- /dev/null
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.h
@@ -0,0 +1,149 @@
+#include <target/target_core_base.h>
+
+#define TCM_QLA2XXX_VERSION "v0.1"
+/* length of ASCII WWPNs including pad */
+#define TCM_QLA2XXX_NAMELEN 32
+/* lenth of ASCII NPIV 'WWPN+WWNN' including pad */
+#define TCM_QLA2XXX_NPIV_NAMELEN 66
+
+#include "qla_target.h"
+
+struct tcm_qla2xxx_nacl {
+ /* From libfc struct fc_rport->port_id */
+ u32 nport_id;
+ /* Binary World Wide unique Node Name for remote FC Initiator Nport */
+ u64 nport_wwnn;
+ /* ASCII formatted WWPN for FC Initiator Nport */
+ char nport_name[TCM_QLA2XXX_NAMELEN];
+ /* Pointer to qla_tgt_sess */
+ struct qla_tgt_sess *qla_tgt_sess;
+ /* Pointer to TCM FC nexus */
+ struct se_session *nport_nexus;
+ /* Returned by tcm_qla2xxx_make_nodeacl() */
+ struct se_node_acl se_node_acl;
+};
+
+struct tcm_qla2xxx_tpg_attrib {
+ int generate_node_acls;
+ int cache_dynamic_acls;
+ int demo_mode_write_protect;
+ int prod_mode_write_protect;
+};
+
+struct tcm_qla2xxx_tpg {
+ /* FC lport target portal group tag for TCM */
+ u16 lport_tpgt;
+ /* Atomic bit to determine TPG active status */
+ atomic_t lport_tpg_enabled;
+ /* Pointer back to tcm_qla2xxx_lport */
+ struct tcm_qla2xxx_lport *lport;
+ /* Used by tcm_qla2xxx_tpg_attrib_cit */
+ struct tcm_qla2xxx_tpg_attrib tpg_attrib;
+ /* Returned by tcm_qla2xxx_make_tpg() */
+ struct se_portal_group se_tpg;
+};
+
+#define QLA_TPG_ATTRIB(tpg) (&(tpg)->tpg_attrib)
+
+/*
+ * Used for the 24-bit lport->lport_fcport_map;
+ */
+struct tcm_qla2xxx_fc_al_pa {
+ struct se_node_acl *se_nacl;
+};
+
+struct tcm_qla2xxx_fc_area {
+ struct tcm_qla2xxx_fc_al_pa al_pas[256];
+};
+
+struct tcm_qla2xxx_fc_domain {
+ struct tcm_qla2xxx_fc_area areas[256];
+};
+
+struct tcm_qla2xxx_fc_loopid {
+ struct se_node_acl *se_nacl;
+};
+
+struct tcm_qla2xxx_lport {
+ /* SCSI protocol the lport is providing */
+ u8 lport_proto_id;
+ /* Binary World Wide unique Port Name for FC Target Lport */
+ u64 lport_wwpn;
+ /* Binary World Wide unique Port Name for FC NPIV Target Lport */
+ u64 lport_npiv_wwpn;
+ /* Binary World Wide unique Node Name for FC NPIV Target Lport */
+ u64 lport_npiv_wwnn;
+ /* ASCII formatted WWPN for FC Target Lport */
+ char lport_name[TCM_QLA2XXX_NAMELEN];
+ /* ASCII formatted WWPN+WWNN for NPIV FC Target Lport */
+ char lport_npiv_name[TCM_QLA2XXX_NPIV_NAMELEN];
+ /* vmalloc'ed memory for fc_port pointers in 24-bit FC Port ID space */
+ char *lport_fcport_map;
+ /* vmalloc-ed memory for fc_port pointers for 16-bit FC loop ID */
+ char *lport_loopid_map;
+ /* Pointer to struct scsi_qla_host from qla2xxx LLD */
+ struct scsi_qla_host *qla_vha;
+ /* Pointer to struct scsi_qla_host for NPIV VP from qla2xxx LLD */
+ struct scsi_qla_host *qla_npiv_vp;
+ /* Pointer to struct qla_tgt pointer */
+ struct qla_tgt lport_qla_tgt;
+ /* Pointer to struct fc_vport for NPIV vport from libfc */
+ struct fc_vport *npiv_vport;
+ /* Pointer to TPG=1 for non NPIV mode */
+ struct tcm_qla2xxx_tpg *tpg_1;
+ /* Returned by tcm_qla2xxx_make_lport() */
+ struct se_wwn lport_wwn;
+};
+
+extern int tcm_qla2xxx_check_true(struct se_portal_group *);
+extern int tcm_qla2xxx_check_false(struct se_portal_group *);
+extern ssize_t tcm_qla2xxx_parse_wwn(const char *, u64 *, int);
+extern ssize_t tcm_qla2xxx_format_wwn(char *, size_t, u64);
+extern char *tcm_qla2xxx_get_fabric_name(void);
+extern int tcm_qla2xxx_npiv_parse_wwn(const char *name, size_t, u64 *, u64 *);
+extern ssize_t tcm_qla2xxx_npiv_format_wwn(char *, size_t, u64, u64);
+extern char *tcm_qla2xxx_npiv_get_fabric_name(void);
+extern u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *);
+extern char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *);
+extern char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *);
+extern u16 tcm_qla2xxx_get_tag(struct se_portal_group *);
+extern u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *);
+extern u32 tcm_qla2xxx_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
+ struct t10_pr_registration *, int *, unsigned char *);
+extern u32 tcm_qla2xxx_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
+ struct t10_pr_registration *, int *);
+extern char *tcm_qla2xxx_parse_pr_out_transport_id(struct se_portal_group *, const char *,
+ u32 *, char **);
+extern int tcm_qla2xxx_check_demo_mode(struct se_portal_group *);
+extern int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *);
+extern int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *);
+extern int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *);
+extern struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(struct se_portal_group *);
+extern void tcm_qla2xxx_release_fabric_acl(struct se_portal_group *, struct se_node_acl *);
+extern u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *);
+extern void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *);
+extern int tcm_qla2xxx_check_stop_free(struct se_cmd *);
+extern void tcm_qla2xxx_release_cmd(struct se_cmd *);
+extern int tcm_qla2xxx_shutdown_session(struct se_session *);
+extern void tcm_qla2xxx_close_session(struct se_session *);
+extern void tcm_qla2xxx_stop_session(struct se_session *, int, int);
+extern void tcm_qla2xxx_reset_nexus(struct se_session *);
+extern int tcm_qla2xxx_sess_logged_in(struct se_session *);
+extern u32 tcm_qla2xxx_sess_get_index(struct se_session *);
+extern int tcm_qla2xxx_write_pending(struct se_cmd *);
+extern int tcm_qla2xxx_write_pending_status(struct se_cmd *);
+extern void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *);
+extern u32 tcm_qla2xxx_get_task_tag(struct se_cmd *);
+extern int tcm_qla2xxx_get_cmd_state(struct se_cmd *);
+extern int tcm_qla2xxx_handle_cmd(struct scsi_qla_host *, struct qla_tgt_cmd *,
+ unsigned char *, uint32_t, int, int, int);
+extern int tcm_qla2xxx_new_cmd_map(struct se_cmd *);
+extern int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *);
+extern int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *, uint32_t,
+ uint8_t, uint32_t);
+extern int tcm_qla2xxx_queue_data_in(struct se_cmd *);
+extern int tcm_qla2xxx_queue_status(struct se_cmd *);
+extern int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *);
+extern u16 tcm_qla2xxx_get_fabric_sense_len(void);
+extern u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *, u32);
+extern int tcm_qla2xxx_is_state_remove(struct se_cmd *);
--
1.7.2.5
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-03-16 23:33 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-03-16 23:23 [PATCH 0/3] qla2xxx: Add target mode LLD and TCM fabric support Nicholas A. Bellinger
2012-03-16 23:23 ` [PATCH 1/3] qla2xxx: Add LLD target-mode infrastructure for >= 24xx series Nicholas A. Bellinger
2012-03-16 23:23 ` [PATCH 2/3] qla2xxx: Enable >= 24xx target-mode support in SCSI LLD Nicholas A. Bellinger
2012-03-16 23:23 ` [PATCH 3/3] tcm_qla2xxx: Add >= 24xx series fabric module for target-core Nicholas A. Bellinger
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