Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This consists of the usual driver updates (ufs, qla2xxx, smartpqi,
  target, zfcp, fnic, mpt3sas, ibmvfc) plus a load of cleanups, a major
  power management rework and a load of assorted minor updates.

  There are a few core updates (formatting fixes being the big one) but
  nothing major this cycle"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (279 commits)
  scsi: mpt3sas: Update driver version to 36.100.00.00
  scsi: mpt3sas: Handle trigger page after firmware update
  scsi: mpt3sas: Add persistent MPI trigger page
  scsi: mpt3sas: Add persistent SCSI sense trigger page
  scsi: mpt3sas: Add persistent Event trigger page
  scsi: mpt3sas: Add persistent Master trigger page
  scsi: mpt3sas: Add persistent trigger pages support
  scsi: mpt3sas: Sync time periodically between driver and firmware
  scsi: qla2xxx: Update version to 10.02.00.104-k
  scsi: qla2xxx: Fix device loss on 4G and older HBAs
  scsi: qla2xxx: If fcport is undergoing deletion complete I/O with retry
  scsi: qla2xxx: Fix the call trace for flush workqueue
  scsi: qla2xxx: Fix flash update in 28XX adapters on big endian machines
  scsi: qla2xxx: Handle aborts correctly for port undergoing deletion
  scsi: qla2xxx: Fix N2N and NVMe connect retry failure
  scsi: qla2xxx: Fix FW initialization error on big endian machines
  scsi: qla2xxx: Fix crash during driver load on big endian machines
  scsi: qla2xxx: Fix compilation issue in PPC systems
  scsi: qla2xxx: Don't check for fw_started while posting NVMe command
  scsi: qla2xxx: Tear down session if FW say it is down
  ...

Documentation/ABI/testing/sysfs-class-fc_host

@@ -0,0 +1,23 @@
+What:		/sys/class/fc_host/hostX/statistics/fpin_cn_yyy
+Date:		July 2020
+Contact:	Shyam Sundar <[email protected]>
+Description:
+		These files contain the number of congestion notification
+		events recorded by the F_Port, reported using fabric
+		performance impact notification (FPIN) event.
+
+What:		/sys/class/fc_host/hostX/statistics/fpin_li_yyy
+Date:		July 2020
+Contact:	Shyam Sundar <[email protected]>
+Description:
+		These files contain the number of link integrity error
+		events recorded by the F_Port/Nx_Port, reported using fabric
+		performance impact notification (FPIN) event.
+
+What:		/sys/class/fc_host/hostX/statistics/fpin_dn_yyy
+Date:		July 2020
+Contact:	Shyam Sundar <[email protected]>
+Description:
+		These files contain the number of delivery related errors
+		recorded by the F_Port/Nx_Port, reported using fabric
+		performance impact notification (FPIN) event.

Documentation/ABI/testing/sysfs-class-fc_remote_ports

@@ -0,0 +1,23 @@
+What:		/sys/class/fc_remote_ports/rport-X:Y-Z/statistics/fpin_cn_yyy
+Date:		July 2020
+Contact:	Shyam Sundar <[email protected]>
+Description:
+		These files contain the number of congestion notification
+		events recorded by the F_Port/Nx_Port, reported using fabric
+		performance impact notification (FPIN) event.
+
+What:		/sys/class/fc_remote_ports/rport-X:Y-Z/statistics/fpin_li_yyy
+Date:		July 2020
+Contact:	Shyam Sundar <[email protected]>
+Description:
+		These files contain the number of link integrity error
+		events recorded by the F_Port/Nx_Port, reported using fabric
+		performance impact notification (FPIN) event.
+
+What:		/sys/class/fc_remote_ports/rport-X:Y-Z/statistics/fpin_dn_yyy
+Date:		July 2020
+Contact:	Shyam Sundar <[email protected]>
+Description:
+		These files contain the number of delivery related errors
+		recorded by the F_Port/Nx_Port, reported using fabric
+		performance impact notification (FPIN) event.

MAINTAINERS

@@ -15780,6 +15780,15 @@ F:	Documentation/scsi/st.rst
 F:	drivers/scsi/st.*
 F:	drivers/scsi/st_*.h
 
+SCSI TARGET CORE USER DRIVER
+M:	Bodo Stroesser <[email protected]>
+L:	[email protected]
+L:	[email protected]
+S:	Supported
+F:	Documentation/target/tcmu-design.rst
+F:	drivers/target/target_core_user.c
+F:	include/uapi/linux/target_core_user.h
+
 SCSI TARGET SUBSYSTEM
 M:	"Martin K. Petersen" <[email protected]>
 L:	[email protected]

block/blk-mq.c

@@ -1404,7 +1404,7 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list,
 			break;
 		default:
 			errors++;
-			blk_mq_end_request(rq, BLK_STS_IOERR);
+			blk_mq_end_request(rq, ret);
 		}
 	} while (!list_empty(list));
 out:

drivers/infiniband/ulp/isert/ib_isert.c

@@ -1528,12 +1528,12 @@ isert_check_pi_status(struct se_cmd *se_cmd, struct ib_mr *sig_mr)
 		}
 		sec_offset_err = mr_status.sig_err.sig_err_offset;
 		do_div(sec_offset_err, block_size);
-		se_cmd->bad_sector = sec_offset_err + se_cmd->t_task_lba;
+		se_cmd->sense_info = sec_offset_err + se_cmd->t_task_lba;
 
 		isert_err("PI error found type %d at sector 0x%llx "
 			  "expected 0x%x vs actual 0x%x\n",
 			  mr_status.sig_err.err_type,
-			  (unsigned long long)se_cmd->bad_sector,
+			  (unsigned long long)se_cmd->sense_info,
 			  mr_status.sig_err.expected,
 			  mr_status.sig_err.actual);
 		ret = 1;
@@ -2471,7 +2471,7 @@ isert_wait4cmds(struct iscsi_conn *conn)
 	isert_info("iscsi_conn %p\n", conn);
 
 	if (conn->sess) {
-		target_sess_cmd_list_set_waiting(conn->sess->se_sess);
+		target_stop_session(conn->sess->se_sess);
 		target_wait_for_sess_cmds(conn->sess->se_sess);
 	}
 }

drivers/infiniband/ulp/srpt/ib_srpt.c

@@ -2085,7 +2085,7 @@ static void srpt_release_channel_work(struct work_struct *w)
 	se_sess = ch->sess;
 	BUG_ON(!se_sess);
 
-	target_sess_cmd_list_set_waiting(se_sess);
+	target_stop_session(se_sess);
 	target_wait_for_sess_cmds(se_sess);
 
 	target_remove_session(se_sess);

drivers/message/fusion/mptbase.c

@@ -57,7 +57,7 @@
 #include <linux/kdev_t.h>
 #include <linux/blkdev.h>
 #include <linux/delay.h>
-#include <linux/interrupt.h>		/* needed for in_interrupt() proto */
+#include <linux/interrupt.h>
 #include <linux/dma-mapping.h>
 #include <linux/kthread.h>
 #include <scsi/scsi_host.h>
@@ -473,7 +473,6 @@ mpt_turbo_reply(MPT_ADAPTER *ioc, u32 pa)
 			mpt_free_msg_frame(ioc, mf);
 			mb();
 			return;
-			break;
 		}
 		mr = (MPT_FRAME_HDR *) CAST_U32_TO_PTR(pa);
 		break;
@@ -6336,7 +6335,6 @@ SendEventAck(MPT_ADAPTER *ioc, EventNotificationReply_t *evnp)
  *		Page header is updated.
  *
  *	Returns 0 for success
- *	-EPERM if not allowed due to ISR context
  *	-EAGAIN if no msg frames currently available
  *	-EFAULT for non-successful reply or no reply (timeout)
  */
@@ -6354,19 +6352,10 @@ mpt_config(MPT_ADAPTER *ioc, CONFIGPARMS *pCfg)
 	u8		 page_type = 0, extend_page;
 	unsigned long 	 timeleft;
 	unsigned long	 flags;
-	int		 in_isr;
 	u8		 issue_hard_reset = 0;
 	u8		 retry_count = 0;
 
-	/*	Prevent calling wait_event() (below), if caller happens
-	 *	to be in ISR context, because that is fatal!
-	 */
-	in_isr = in_interrupt();
-	if (in_isr) {
-		dcprintk(ioc, printk(MYIOC_s_WARN_FMT "Config request not allowed in ISR context!\n",
-				ioc->name));
-		return -EPERM;
-    }
+	might_sleep();
 
 	/* don't send a config page during diag reset */
 	spin_lock_irqsave(&ioc->taskmgmt_lock, flags);

drivers/message/fusion/mptfc.c

@@ -50,7 +50,7 @@
 #include <linux/kdev_t.h>
 #include <linux/blkdev.h>
 #include <linux/delay.h>	/* for mdelay */
-#include <linux/interrupt.h>	/* needed for in_interrupt() proto */
+#include <linux/interrupt.h>
 #include <linux/reboot.h>	/* notifier code */
 #include <linux/workqueue.h>
 #include <linux/sort.h>

drivers/message/fusion/mptsas.c

@@ -289,6 +289,7 @@ mptsas_add_fw_event(MPT_ADAPTER *ioc, struct fw_event_work *fw_event,
 
 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
 	list_add_tail(&fw_event->list, &ioc->fw_event_list);
+	fw_event->users = 1;
 	INIT_DELAYED_WORK(&fw_event->work, mptsas_firmware_event_work);
 	devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: add (fw_event=0x%p)"
 		"on cpuid %d\n", ioc->name, __func__,
@@ -314,17 +315,25 @@ mptsas_requeue_fw_event(MPT_ADAPTER *ioc, struct fw_event_work *fw_event,
 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
 }
 
+static void __mptsas_free_fw_event(MPT_ADAPTER *ioc,
+				   struct fw_event_work *fw_event)
+{
+	devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: kfree (fw_event=0x%p)\n",
+	    ioc->name, __func__, fw_event));
+	list_del(&fw_event->list);
+	kfree(fw_event);
+}
+
 /* free memory associated to a sas firmware event */
 static void
 mptsas_free_fw_event(MPT_ADAPTER *ioc, struct fw_event_work *fw_event)
 {
 	unsigned long flags;
 
 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
-	devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: kfree (fw_event=0x%p)\n",
-	    ioc->name, __func__, fw_event));
-	list_del(&fw_event->list);
-	kfree(fw_event);
+	fw_event->users--;
+	if (!fw_event->users)
+		__mptsas_free_fw_event(ioc, fw_event);
 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
 }
 
@@ -333,9 +342,10 @@ mptsas_free_fw_event(MPT_ADAPTER *ioc, struct fw_event_work *fw_event)
 static void
 mptsas_cleanup_fw_event_q(MPT_ADAPTER *ioc)
 {
-	struct fw_event_work *fw_event, *next;
+	struct fw_event_work *fw_event;
 	struct mptsas_target_reset_event *target_reset_list, *n;
 	MPT_SCSI_HOST	*hd = shost_priv(ioc->sh);
+	unsigned long flags;
 
 	/* flush the target_reset_list */
 	if (!list_empty(&hd->target_reset_list)) {
@@ -350,14 +360,29 @@ mptsas_cleanup_fw_event_q(MPT_ADAPTER *ioc)
 		}
 	}
 
-	if (list_empty(&ioc->fw_event_list) ||
-	     !ioc->fw_event_q || in_interrupt())
+	if (list_empty(&ioc->fw_event_list) || !ioc->fw_event_q)
 		return;
 
-	list_for_each_entry_safe(fw_event, next, &ioc->fw_event_list, list) {
-		if (cancel_delayed_work(&fw_event->work))
-			mptsas_free_fw_event(ioc, fw_event);
+	spin_lock_irqsave(&ioc->fw_event_lock, flags);
+
+	while (!list_empty(&ioc->fw_event_list)) {
+		bool canceled = false;
+
+		fw_event = list_first_entry(&ioc->fw_event_list,
+					    struct fw_event_work, list);
+		fw_event->users++;
+		spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
+		if (cancel_delayed_work_sync(&fw_event->work))
+			canceled = true;
+
+		spin_lock_irqsave(&ioc->fw_event_lock, flags);
+		if (canceled)
+			fw_event->users--;
+		fw_event->users--;
+		WARN_ON_ONCE(fw_event->users);
+		__mptsas_free_fw_event(ioc, fw_event);
 	}
+	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
 }
 
 

drivers/message/fusion/mptsas.h

@@ -107,6 +107,7 @@ struct mptsas_hotplug_event {
 struct fw_event_work {
 	struct list_head 	list;
 	struct delayed_work	 work;
+	int			users;
 	MPT_ADAPTER	*ioc;
 	u32			event;
 	u8			retries;

drivers/message/fusion/mptscsih.c

@@ -52,7 +52,7 @@
 #include <linux/kdev_t.h>
 #include <linux/blkdev.h>
 #include <linux/delay.h>	/* for mdelay */
-#include <linux/interrupt.h>	/* needed for in_interrupt() proto */
+#include <linux/interrupt.h>
 #include <linux/reboot.h>	/* notifier code */
 #include <linux/workqueue.h>
 

drivers/message/fusion/mptspi.c

@@ -52,7 +52,7 @@
 #include <linux/kdev_t.h>
 #include <linux/blkdev.h>
 #include <linux/delay.h>	/* for mdelay */
-#include <linux/interrupt.h>	/* needed for in_interrupt() proto */
+#include <linux/interrupt.h>
 #include <linux/reboot.h>	/* notifier code */
 #include <linux/workqueue.h>
 #include <linux/raid_class.h>

drivers/s390/scsi/zfcp_aux.c

@@ -292,6 +292,14 @@ static void _zfcp_status_read_scheduler(struct work_struct *work)
 					     stat_work));
 }
 
+static void zfcp_version_change_lost_work(struct work_struct *work)
+{
+	struct zfcp_adapter *adapter = container_of(work, struct zfcp_adapter,
+						    version_change_lost_work);
+
+	zfcp_fsf_exchange_config_data_sync(adapter->qdio, NULL);
+}
+
 static void zfcp_print_sl(struct seq_file *m, struct service_level *sl)
 {
 	struct zfcp_adapter *adapter =
@@ -353,6 +361,8 @@ struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *ccw_device)
 	INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler);
 	INIT_DELAYED_WORK(&adapter->scan_work, zfcp_fc_scan_ports);
 	INIT_WORK(&adapter->ns_up_work, zfcp_fc_sym_name_update);
+	INIT_WORK(&adapter->version_change_lost_work,
+		  zfcp_version_change_lost_work);
 
 	adapter->next_port_scan = jiffies;
 
@@ -429,6 +439,7 @@ void zfcp_adapter_unregister(struct zfcp_adapter *adapter)
 	cancel_delayed_work_sync(&adapter->scan_work);
 	cancel_work_sync(&adapter->stat_work);
 	cancel_work_sync(&adapter->ns_up_work);
+	cancel_work_sync(&adapter->version_change_lost_work);
 	zfcp_destroy_adapter_work_queue(adapter);
 
 	zfcp_fc_wka_ports_force_offline(adapter->gs);

drivers/s390/scsi/zfcp_def.h

@@ -200,6 +200,7 @@ struct zfcp_adapter {
 	struct zfcp_fc_events events;
 	unsigned long		next_port_scan;
 	struct zfcp_diag_adapter	*diagnostics;
+	struct work_struct	version_change_lost_work;
 };
 
 struct zfcp_port {

drivers/s390/scsi/zfcp_ext.h

@@ -20,8 +20,6 @@ extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *, u64);
 extern struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *);
 extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, u64, u32,
 					   u32);
-extern void zfcp_sg_free_table(struct scatterlist *, int);
-extern int zfcp_sg_setup_table(struct scatterlist *, int);
 extern void zfcp_adapter_release(struct kref *);
 extern void zfcp_adapter_unregister(struct zfcp_adapter *);
 

drivers/s390/scsi/zfcp_fsf.c

@@ -242,6 +242,19 @@ static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
 	}
 }
 
+static void
+zfcp_fsf_status_read_version_change(struct zfcp_adapter *adapter,
+				    struct fsf_status_read_buffer *sr_buf)
+{
+	if (sr_buf->status_subtype == FSF_STATUS_READ_SUB_LIC_CHANGE) {
+		u32 version = sr_buf->payload.version_change.current_version;
+
+		WRITE_ONCE(adapter->fsf_lic_version, version);
+		snprintf(fc_host_firmware_version(adapter->scsi_host),
+			 FC_VERSION_STRING_SIZE, "%#08x", version);
+	}
+}
+
 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
 {
 	struct zfcp_adapter *adapter = req->adapter;
@@ -296,10 +309,16 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
 	case FSF_STATUS_READ_NOTIFICATION_LOST:
 		if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
 			zfcp_fc_conditional_port_scan(adapter);
+		if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_VERSION_CHANGE)
+			queue_work(adapter->work_queue,
+				   &adapter->version_change_lost_work);
 		break;
 	case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
 		adapter->adapter_features = sr_buf->payload.word[0];
 		break;
+	case FSF_STATUS_READ_VERSION_CHANGE:
+		zfcp_fsf_status_read_version_change(adapter, sr_buf);
+		break;
 	}
 
 	mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);

drivers/s390/scsi/zfcp_fsf.h

@@ -134,6 +134,7 @@
 #define FSF_STATUS_READ_LINK_UP          	0x00000006
 #define FSF_STATUS_READ_NOTIFICATION_LOST	0x00000009
 #define FSF_STATUS_READ_FEATURE_UPDATE_ALERT	0x0000000C
+#define FSF_STATUS_READ_VERSION_CHANGE		0x0000000D
 
 /* status subtypes for link down */
 #define FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK	0x00000000
@@ -142,6 +143,10 @@
 
 /* status subtypes for unsolicited status notification lost */
 #define FSF_STATUS_READ_SUB_INCOMING_ELS	0x00000001
+#define FSF_STATUS_READ_SUB_VERSION_CHANGE	0x00000100
+
+/* status subtypes for version change */
+#define FSF_STATUS_READ_SUB_LIC_CHANGE		0x00000001
 
 /* topologie that is detected by the adapter */
 #define FSF_TOPO_P2P				0x00000001
@@ -226,6 +231,11 @@ struct fsf_link_down_info {
 	u8 vendor_specific_code;
 } __attribute__ ((packed));
 
+struct fsf_version_change {
+	u32 current_version;
+	u32 previous_version;
+} __packed;
+
 struct fsf_status_read_buffer {
 	u32 status_type;
 	u32 status_subtype;
@@ -242,6 +252,7 @@ struct fsf_status_read_buffer {
 		u32 word[FSF_STATUS_READ_PAYLOAD_SIZE/sizeof(u32)];
 		struct fsf_link_down_info link_down_info;
 		struct fsf_bit_error_payload bit_error;
+		struct fsf_version_change version_change;
 	} payload;
 } __attribute__ ((packed));