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

Pull SCSI updates from James Bottomley:
 "This is mostly updates to the usual drivers: mpt3sas, lpfc, qla2xxx,
  hisi_sas, smartpqi, megaraid_sas, arcmsr.

  In addition, with the continuing absence of Nic we have target updates
  for tcmu and target core (all with reviews and acks).

  The biggest observable change is going to be that we're (again) trying
  to switch to mulitqueue as the default (a user can still override the
  setting on the kernel command line).

  Other major core stuff is the removal of the remaining Microchannel
  drivers, an update of the internal timers and some reworks of
  completion and result handling"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (203 commits)
  scsi: core: use blk_mq_run_hw_queues in scsi_kick_queue
  scsi: ufs: remove unnecessary query(DM) UPIU trace
  scsi: qla2xxx: Fix issue reported by static checker for qla2x00_els_dcmd2_sp_done()
  scsi: aacraid: Spelling fix in comment
  scsi: mpt3sas: Fix calltrace observed while running IO & reset
  scsi: aic94xx: fix an error code in aic94xx_init()
  scsi: st: remove redundant pointer STbuffer
  scsi: qla2xxx: Update driver version to 10.00.00.08-k
  scsi: qla2xxx: Migrate NVME N2N handling into state machine
  scsi: qla2xxx: Save frame payload size from ICB
  scsi: qla2xxx: Fix stalled relogin
  scsi: qla2xxx: Fix race between switch cmd completion and timeout
  scsi: qla2xxx: Fix Management Server NPort handle reservation logic
  scsi: qla2xxx: Flush mailbox commands on chip reset
  scsi: qla2xxx: Fix unintended Logout
  scsi: qla2xxx: Fix session state stuck in Get Port DB
  scsi: qla2xxx: Fix redundant fc_rport registration
  scsi: qla2xxx: Silent erroneous message
  scsi: qla2xxx: Prevent sysfs access when chip is down
  scsi: qla2xxx: Add longer window for chip reset
  ...

drivers/scsi/qla2xxx/qla_mbx.c

@@ -59,6 +59,7 @@ static struct rom_cmd {
 	{ MBC_IOCB_COMMAND_A64 },
 	{ MBC_GET_ADAPTER_LOOP_ID },
 	{ MBC_READ_SFP },
+	{ MBC_GET_RNID_PARAMS },
 };
 
 static int is_rom_cmd(uint16_t cmd)
@@ -110,6 +111,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 	unsigned long	wait_time;
 	struct qla_hw_data *ha = vha->hw;
 	scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
+	u32 chip_reset;
 
 
 	ql_dbg(ql_dbg_mbx, vha, 0x1000, "Entered %s.\n", __func__);
@@ -140,7 +142,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 
 	rval = QLA_SUCCESS;
 	abort_active = test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
-
+	chip_reset = ha->chip_reset;
 
 	if (ha->flags.pci_channel_io_perm_failure) {
 		ql_log(ql_log_warn, vha, 0x1003,
@@ -167,6 +169,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 		return QLA_FUNCTION_TIMEOUT;
 	}
 
+	atomic_inc(&ha->num_pend_mbx_stage1);
 	/*
 	 * Wait for active mailbox commands to finish by waiting at most tov
 	 * seconds. This is to serialize actual issuing of mailbox cmds during
@@ -177,8 +180,14 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 		ql_log(ql_log_warn, vha, 0xd035,
 		    "Cmd access timeout, cmd=0x%x, Exiting.\n",
 		    mcp->mb[0]);
+		atomic_dec(&ha->num_pend_mbx_stage1);
 		return QLA_FUNCTION_TIMEOUT;
 	}
+	atomic_dec(&ha->num_pend_mbx_stage1);
+	if (ha->flags.purge_mbox || chip_reset != ha->chip_reset) {
+		rval = QLA_ABORTED;
+		goto premature_exit;
+	}
 
 	ha->flags.mbox_busy = 1;
 	/* Save mailbox command for debug */
@@ -189,6 +198,13 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 
 	spin_lock_irqsave(&ha->hardware_lock, flags);
 
+	if (ha->flags.purge_mbox || chip_reset != ha->chip_reset) {
+		rval = QLA_ABORTED;
+		ha->flags.mbox_busy = 0;
+		spin_unlock_irqrestore(&ha->hardware_lock, flags);
+		goto premature_exit;
+	}
+
 	/* Load mailbox registers. */
 	if (IS_P3P_TYPE(ha))
 		optr = (uint16_t __iomem *)&reg->isp82.mailbox_in[0];
@@ -231,7 +247,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 	    "jiffies=%lx.\n", jiffies);
 
 	/* Wait for mbx cmd completion until timeout */
-
+	atomic_inc(&ha->num_pend_mbx_stage2);
 	if ((!abort_active && io_lock_on) || IS_NOPOLLING_TYPE(ha)) {
 		set_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);
 
@@ -241,6 +257,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 				spin_unlock_irqrestore(&ha->hardware_lock,
 					flags);
 				ha->flags.mbox_busy = 0;
+				atomic_dec(&ha->num_pend_mbx_stage2);
 				ql_dbg(ql_dbg_mbx, vha, 0x1010,
 				    "Pending mailbox timeout, exiting.\n");
 				rval = QLA_FUNCTION_TIMEOUT;
@@ -254,6 +271,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 		spin_unlock_irqrestore(&ha->hardware_lock, flags);
 
 		wait_time = jiffies;
+		atomic_inc(&ha->num_pend_mbx_stage3);
 		if (!wait_for_completion_timeout(&ha->mbx_intr_comp,
 		    mcp->tov * HZ)) {
 			ql_dbg(ql_dbg_mbx, vha, 0x117a,
@@ -261,7 +279,17 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 			spin_lock_irqsave(&ha->hardware_lock, flags);
 			clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);
 			spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+		} else if (ha->flags.purge_mbox ||
+		    chip_reset != ha->chip_reset) {
+			ha->flags.mbox_busy = 0;
+			atomic_dec(&ha->num_pend_mbx_stage2);
+			atomic_dec(&ha->num_pend_mbx_stage3);
+			rval = QLA_ABORTED;
+			goto premature_exit;
 		}
+		atomic_dec(&ha->num_pend_mbx_stage3);
+
 		if (time_after(jiffies, wait_time + 5 * HZ))
 			ql_log(ql_log_warn, vha, 0x1015, "cmd=0x%x, waited %d msecs\n",
 			    command, jiffies_to_msecs(jiffies - wait_time));
@@ -275,6 +303,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 				spin_unlock_irqrestore(&ha->hardware_lock,
 					flags);
 				ha->flags.mbox_busy = 0;
+				atomic_dec(&ha->num_pend_mbx_stage2);
 				ql_dbg(ql_dbg_mbx, vha, 0x1012,
 				    "Pending mailbox timeout, exiting.\n");
 				rval = QLA_FUNCTION_TIMEOUT;
@@ -289,6 +318,14 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 
 		wait_time = jiffies + mcp->tov * HZ; /* wait at most tov secs */
 		while (!ha->flags.mbox_int) {
+			if (ha->flags.purge_mbox ||
+			    chip_reset != ha->chip_reset) {
+				ha->flags.mbox_busy = 0;
+				atomic_dec(&ha->num_pend_mbx_stage2);
+				rval = QLA_ABORTED;
+				goto premature_exit;
+			}
+
 			if (time_after(jiffies, wait_time))
 				break;
 
@@ -312,6 +349,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 		    "Waited %d sec.\n",
 		    (uint)((jiffies - (wait_time - (mcp->tov * HZ)))/HZ));
 	}
+	atomic_dec(&ha->num_pend_mbx_stage2);
 
 	/* Check whether we timed out */
 	if (ha->flags.mbox_int) {
@@ -390,7 +428,8 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp)
 		/* Capture FW dump only, if PCI device active */
 		if (!pci_channel_offline(vha->hw->pdev)) {
 			pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
-			if (w == 0xffff || ictrl == 0xffffffff) {
+			if (w == 0xffff || ictrl == 0xffffffff ||
+			    (chip_reset != ha->chip_reset)) {
 				/* This is special case if there is unload
 				 * of driver happening and if PCI device go
 				 * into bad state due to PCI error condition
@@ -497,7 +536,11 @@ premature_exit:
 	complete(&ha->mbx_cmd_comp);
 
 mbx_done:
-	if (rval) {
+	if (rval == QLA_ABORTED) {
+		ql_log(ql_log_info, vha, 0xd035,
+		    "Chip Reset in progress. Purging Mbox cmd=0x%x.\n",
+		    mcp->mb[0]);
+	} else if (rval) {
 		if (ql2xextended_error_logging & (ql_dbg_disc|ql_dbg_mbx)) {
 			pr_warn("%s [%s]-%04x:%ld: **** Failed", QL_MSGHDR,
 			    dev_name(&ha->pdev->dev), 0x1020+0x800,
@@ -2177,7 +2220,10 @@ qla2x00_lip_reset(scsi_qla_host_t *vha)
 		mcp->out_mb = MBX_2|MBX_1|MBX_0;
 	} else if (IS_FWI2_CAPABLE(vha->hw)) {
 		mcp->mb[0] = MBC_LIP_FULL_LOGIN;
-		mcp->mb[1] = BIT_6;
+		if (N2N_TOPO(vha->hw))
+			mcp->mb[1] = BIT_4; /* re-init */
+		else
+			mcp->mb[1] = BIT_6; /* LIP */
 		mcp->mb[2] = 0;
 		mcp->mb[3] = vha->hw->loop_reset_delay;
 		mcp->out_mb = MBX_3|MBX_2|MBX_1|MBX_0;
@@ -3797,30 +3843,68 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
 		   "Format 1: WWPN %8phC.\n",
 		   vha->port_name);
 
-		/* N2N.  direct connect */
-		if (IS_QLA27XX(ha) &&
-		    ((rptid_entry->u.f1.flags>>1) & 0x7) == 2) {
-			/* if our portname is higher then initiate N2N login */
-			if (wwn_to_u64(vha->port_name) >
-			    wwn_to_u64(rptid_entry->u.f1.port_name)) {
-				// ??? qlt_update_host_map(vha, id);
-				vha->n2n_id = 0x1;
-				ql_dbg(ql_dbg_async, vha, 0x5075,
-				    "Format 1: Setting n2n_update_needed for id %d\n",
-				    vha->n2n_id);
+		switch (rptid_entry->u.f1.flags & TOPO_MASK) {
+		case TOPO_N2N:
+			ha->current_topology = ISP_CFG_N;
+			spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
+			fcport = qla2x00_find_fcport_by_wwpn(vha,
+			    rptid_entry->u.f1.port_name, 1);
+			spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
+
+			if (fcport) {
+				fcport->plogi_nack_done_deadline = jiffies + HZ;
+				fcport->dm_login_expire = jiffies + 3*HZ;
+				fcport->scan_state = QLA_FCPORT_FOUND;
+				switch (fcport->disc_state) {
+				case DSC_DELETED:
+					set_bit(RELOGIN_NEEDED,
+					    &vha->dpc_flags);
+					break;
+				case DSC_DELETE_PEND:
+					break;
+				default:
+					qlt_schedule_sess_for_deletion(fcport);
+					break;
+				}
 			} else {
-				ql_dbg(ql_dbg_async, vha, 0x5075,
-				    "Format 1: Remote login - Waiting for WWPN %8phC.\n",
-				    rptid_entry->u.f1.port_name);
+				id.b24 = 0;
+				if (wwn_to_u64(vha->port_name) >
+				    wwn_to_u64(rptid_entry->u.f1.port_name)) {
+					vha->d_id.b24 = 0;
+					vha->d_id.b.al_pa = 1;
+					ha->flags.n2n_bigger = 1;
+
+					id.b.al_pa = 2;
+					ql_dbg(ql_dbg_async, vha, 0x5075,
+					    "Format 1: assign local id %x remote id %x\n",
+					    vha->d_id.b24, id.b24);
+				} else {
+					ql_dbg(ql_dbg_async, vha, 0x5075,
+					    "Format 1: Remote login - Waiting for WWPN %8phC.\n",
+					    rptid_entry->u.f1.port_name);
+					ha->flags.n2n_bigger = 0;
+				}
+				qla24xx_post_newsess_work(vha, &id,
+				    rptid_entry->u.f1.port_name,
+				    rptid_entry->u.f1.node_name,
+				    NULL,
+				    FC4_TYPE_UNKNOWN);
 			}
 
-			memcpy(vha->n2n_port_name, rptid_entry->u.f1.port_name,
-			    WWN_SIZE);
+			/* if our portname is higher then initiate N2N login */
+
 			set_bit(N2N_LOGIN_NEEDED, &vha->dpc_flags);
-			set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
-			set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 			ha->flags.n2n_ae = 1;
 			return;
+			break;
+		case TOPO_FL:
+			ha->current_topology = ISP_CFG_FL;
+			break;
+		case TOPO_F:
+			ha->current_topology = ISP_CFG_F;
+			break;
+		default:
+			break;
 		}
 
 		ha->flags.gpsc_supported = 1;
@@ -3909,30 +3993,9 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
 		    rptid_entry->u.f2.port_name, 1);
 
 		if (fcport) {
+			fcport->login_retry = vha->hw->login_retry_count;
 			fcport->plogi_nack_done_deadline = jiffies + HZ;
 			fcport->scan_state = QLA_FCPORT_FOUND;
-			switch (fcport->disc_state) {
-			case DSC_DELETED:
-				ql_dbg(ql_dbg_disc, vha, 0x210d,
-				    "%s %d %8phC login\n",
-				    __func__, __LINE__, fcport->port_name);
-				qla24xx_fcport_handle_login(vha, fcport);
-				break;
-			case DSC_DELETE_PEND:
-				break;
-			default:
-				qlt_schedule_sess_for_deletion(fcport);
-				break;
-			}
-		} else {
-			id.b.al_pa  = rptid_entry->u.f2.remote_nport_id[0];
-			id.b.area   = rptid_entry->u.f2.remote_nport_id[1];
-			id.b.domain = rptid_entry->u.f2.remote_nport_id[2];
-			qla24xx_post_newsess_work(vha, &id,
-			    rptid_entry->u.f2.port_name,
-			    rptid_entry->u.f2.node_name,
-			    NULL,
-			    FC4_TYPE_UNKNOWN);
 		}
 	}
 }
@@ -4663,7 +4726,7 @@ qla24xx_get_port_login_templ(scsi_qla_host_t *vha, dma_addr_t buf_dma,
 		    "Done %s.\n", __func__);
 		bp = (uint32_t *) buf;
 		for (i = 0; i < (bufsiz-4)/4; i++, bp++)
-			*bp = cpu_to_be32(*bp);
+			*bp = le32_to_cpu(*bp);
 	}
 
 	return rval;