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

Pull first round of SCSI updates from James Bottomley:
 "This is a large set of updates, mostly for drivers (qla2xxx [including
  support for new 83xx based card], qla4xxx, mpt2sas, bfa, zfcp, hpsa,
  be2iscsi, isci, lpfc, ipr, ibmvfc, ibmvscsi, megaraid_sas).

  There's also a rework for tape adding virtually unlimited numbers of
  tape drives plus a set of dif fixes for sd and a fix for a live lock
  on hot remove of SCSI devices.

  This round includes a signed tag pull of isci-for-3.6

  Signed-off-by: James Bottomley <JBottomley@Parallels.com>"

Fix up trivial conflict in drivers/scsi/qla2xxx/qla_nx.c due to new PCI
helper function use in a function that was removed by this pull.

* tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (198 commits)
  [SCSI] st: remove st_mutex
  [SCSI] sd: Ensure we correctly disable devices with unknown protection type
  [SCSI] hpsa: gen8plus Smart Array IDs
  [SCSI] qla4xxx: Update driver version to 5.03.00-k1
  [SCSI] qla4xxx: Disable generating pause frames for ISP83XX
  [SCSI] qla4xxx: Fix double clearing of risc_intr for ISP83XX
  [SCSI] qla4xxx: IDC implementation for Loopback
  [SCSI] qla4xxx: update copyrights in LICENSE.qla4xxx
  [SCSI] qla4xxx: Fix panic while rmmod
  [SCSI] qla4xxx: Fail probe_adapter if IRQ allocation fails
  [SCSI] qla4xxx: Prevent MSI/MSI-X falling back to INTx for ISP82XX
  [SCSI] qla4xxx: Update idc reg in case of PCI AER
  [SCSI] qla4xxx: Fix double IDC locking in qla4_8xxx_error_recovery
  [SCSI] qla4xxx: Clear interrupt while unloading driver for ISP83XX
  [SCSI] qla4xxx: Print correct IDC version
  [SCSI] qla4xxx: Added new mbox cmd to pass driver version to FW
  [SCSI] scsi_dh_alua: Enable STPG for unavailable ports
  [SCSI] scsi_remove_target: fix softlockup regression on hot remove
  [SCSI] ibmvscsi: Fix host config length field overflow
  [SCSI] ibmvscsi: Remove backend abstraction
  ...

1 files changed, 131 insertions, 16 deletions

diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 5ab953029f8..1c28215f8be 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -1,6 +1,6 @@
 /*
  * QLogic Fibre Channel HBA Driver
- * Copyright (c)  2003-2011 QLogic Corporation
+ * Copyright (c)  2003-2012 QLogic Corporation
  *
  * See LICENSE.qla2xxx for copyright and licensing details.
  */
@@ -26,7 +26,7 @@ qla2x00_sysfs_read_fw_dump(struct file *filp, struct kobject *kobj,
 	struct qla_hw_data *ha = vha->hw;
 	int rval = 0;
 
-	if (ha->fw_dump_reading == 0)
+	if (!(ha->fw_dump_reading || ha->mctp_dump_reading))
 		return 0;
 
 	if (IS_QLA82XX(ha)) {
@@ -39,9 +39,14 @@ qla2x00_sysfs_read_fw_dump(struct file *filp, struct kobject *kobj,
 		rval = memory_read_from_buffer(buf, count,
 		    &off, ha->md_dump, ha->md_dump_size);
 		return rval;
-	} else
+	} else if (ha->mctp_dumped && ha->mctp_dump_reading)
+		return memory_read_from_buffer(buf, count, &off, ha->mctp_dump,
+		    MCTP_DUMP_SIZE);
+	else if (ha->fw_dump_reading)
 		return memory_read_from_buffer(buf, count, &off, ha->fw_dump,
 					ha->fw_dump_len);
+	else
+		return 0;
 }
 
 static ssize_t
@@ -107,6 +112,22 @@ qla2x00_sysfs_write_fw_dump(struct file *filp, struct kobject *kobj,
 		if (IS_QLA82XX(ha))
 			set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 		break;
+	case 6:
+		if (!ha->mctp_dump_reading)
+			break;
+		ql_log(ql_log_info, vha, 0x70c1,
+		    "MCTP dump cleared on (%ld).\n", vha->host_no);
+		ha->mctp_dump_reading = 0;
+		ha->mctp_dumped = 0;
+		break;
+	case 7:
+		if (ha->mctp_dumped && !ha->mctp_dump_reading) {
+			ha->mctp_dump_reading = 1;
+			ql_log(ql_log_info, vha, 0x70c2,
+			    "Raw mctp dump ready for read on (%ld).\n",
+			    vha->host_no);
+		}
+		break;
 	}
 	return count;
 }
@@ -564,6 +585,7 @@ qla2x00_sysfs_write_reset(struct file *filp, struct kobject *kobj,
 	struct qla_hw_data *ha = vha->hw;
 	struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
 	int type;
+	uint32_t idc_control;
 
 	if (off != 0)
 		return -EINVAL;
@@ -587,22 +609,36 @@ qla2x00_sysfs_write_reset(struct file *filp, struct kobject *kobj,
 		scsi_unblock_requests(vha->host);
 		break;
 	case 0x2025d:
-		if (!IS_QLA81XX(ha) || !IS_QLA8031(ha))
+		if (!IS_QLA81XX(ha) && !IS_QLA83XX(ha))
 			return -EPERM;
 
 		ql_log(ql_log_info, vha, 0x706f,
 		    "Issuing MPI reset.\n");
 
-		/* Make sure FC side is not in reset */
-		qla2x00_wait_for_hba_online(vha);
-
-		/* Issue MPI reset */
-		scsi_block_requests(vha->host);
-		if (qla81xx_restart_mpi_firmware(vha) != QLA_SUCCESS)
-			ql_log(ql_log_warn, vha, 0x7070,
-			    "MPI reset failed.\n");
-		scsi_unblock_requests(vha->host);
-		break;
+		if (IS_QLA83XX(ha)) {
+			uint32_t idc_control;
+
+			qla83xx_idc_lock(vha, 0);
+			__qla83xx_get_idc_control(vha, &idc_control);
+			idc_control |= QLA83XX_IDC_GRACEFUL_RESET;
+			__qla83xx_set_idc_control(vha, idc_control);
+			qla83xx_wr_reg(vha, QLA83XX_IDC_DEV_STATE,
+			    QLA8XXX_DEV_NEED_RESET);
+			qla83xx_idc_audit(vha, IDC_AUDIT_TIMESTAMP);
+			qla83xx_idc_unlock(vha, 0);
+			break;
+		} else {
+			/* Make sure FC side is not in reset */
+			qla2x00_wait_for_hba_online(vha);
+
+			/* Issue MPI reset */
+			scsi_block_requests(vha->host);
+			if (qla81xx_restart_mpi_firmware(vha) != QLA_SUCCESS)
+				ql_log(ql_log_warn, vha, 0x7070,
+				    "MPI reset failed.\n");
+			scsi_unblock_requests(vha->host);
+			break;
+		}
 	case 0x2025e:
 		if (!IS_QLA82XX(ha) || vha != base_vha) {
 			ql_log(ql_log_info, vha, 0x7071,
@@ -616,6 +652,29 @@ qla2x00_sysfs_write_reset(struct file *filp, struct kobject *kobj,
 		qla2xxx_wake_dpc(vha);
 		qla2x00_wait_for_fcoe_ctx_reset(vha);
 		break;
+	case 0x2025f:
+		if (!IS_QLA8031(ha))
+			return -EPERM;
+		ql_log(ql_log_info, vha, 0x70bc,
+		    "Disabling Reset by IDC control\n");
+		qla83xx_idc_lock(vha, 0);
+		__qla83xx_get_idc_control(vha, &idc_control);
+		idc_control |= QLA83XX_IDC_RESET_DISABLED;
+		__qla83xx_set_idc_control(vha, idc_control);
+		qla83xx_idc_unlock(vha, 0);
+		break;
+	case 0x20260:
+		if (!IS_QLA8031(ha))
+			return -EPERM;
+		ql_log(ql_log_info, vha, 0x70bd,
+		    "Enabling Reset by IDC control\n");
+		qla83xx_idc_lock(vha, 0);
+		__qla83xx_get_idc_control(vha, &idc_control);
+		idc_control &= ~QLA83XX_IDC_RESET_DISABLED;
+		__qla83xx_set_idc_control(vha, idc_control);
+		qla83xx_idc_unlock(vha, 0);
+		break;
+
 	}
 	return count;
 }
@@ -1251,6 +1310,49 @@ qla2x00_fw_state_show(struct device *dev, struct device_attribute *attr,
 	    state[1], state[2], state[3], state[4]);
 }
 
+static ssize_t
+qla2x00_diag_requests_show(struct device *dev,
+	struct device_attribute *attr, char *buf)
+{
+	scsi_qla_host_t *vha = shost_priv(class_to_shost(dev));
+
+	if (!IS_BIDI_CAPABLE(vha->hw))
+		return snprintf(buf, PAGE_SIZE, "\n");
+
+	return snprintf(buf, PAGE_SIZE, "%llu\n", vha->bidi_stats.io_count);
+}
+
+static ssize_t
+qla2x00_diag_megabytes_show(struct device *dev,
+	struct device_attribute *attr, char *buf)
+{
+	scsi_qla_host_t *vha = shost_priv(class_to_shost(dev));
+
+	if (!IS_BIDI_CAPABLE(vha->hw))
+		return snprintf(buf, PAGE_SIZE, "\n");
+
+	return snprintf(buf, PAGE_SIZE, "%llu\n",
+	    vha->bidi_stats.transfer_bytes >> 20);
+}
+
+static ssize_t
+qla2x00_fw_dump_size_show(struct device *dev, struct device_attribute *attr,
+	char *buf)
+{
+	scsi_qla_host_t *vha = shost_priv(class_to_shost(dev));
+	struct qla_hw_data *ha = vha->hw;
+	uint32_t size;
+
+	if (!ha->fw_dumped)
+		size = 0;
+	else if (IS_QLA82XX(ha))
+		size = ha->md_template_size + ha->md_dump_size;
+	else
+		size = ha->fw_dump_len;
+
+	return snprintf(buf, PAGE_SIZE, "%d\n", size);
+}
+
 static DEVICE_ATTR(driver_version, S_IRUGO, qla2x00_drvr_version_show, NULL);
 static DEVICE_ATTR(fw_version, S_IRUGO, qla2x00_fw_version_show, NULL);
 static DEVICE_ATTR(serial_num, S_IRUGO, qla2x00_serial_num_show, NULL);
@@ -1289,6 +1391,9 @@ static DEVICE_ATTR(vn_port_mac_address, S_IRUGO,
 static DEVICE_ATTR(fabric_param, S_IRUGO, qla2x00_fabric_param_show, NULL);
 static DEVICE_ATTR(fw_state, S_IRUGO, qla2x00_fw_state_show, NULL);
 static DEVICE_ATTR(thermal_temp, S_IRUGO, qla2x00_thermal_temp_show, NULL);
+static DEVICE_ATTR(diag_requests, S_IRUGO, qla2x00_diag_requests_show, NULL);
+static DEVICE_ATTR(diag_megabytes, S_IRUGO, qla2x00_diag_megabytes_show, NULL);
+static DEVICE_ATTR(fw_dump_size, S_IRUGO, qla2x00_fw_dump_size_show, NULL);
 
 struct device_attribute *qla2x00_host_attrs[] = {
 	&dev_attr_driver_version,
@@ -1318,6 +1423,9 @@ struct device_attribute *qla2x00_host_attrs[] = {
 	&dev_attr_fw_state,
 	&dev_attr_optrom_gold_fw_version,
 	&dev_attr_thermal_temp,
+	&dev_attr_diag_requests,
+	&dev_attr_diag_megabytes,
+	&dev_attr_fw_dump_size,
 	NULL,
 };
 
@@ -1704,7 +1812,7 @@ qla24xx_vport_create(struct fc_vport *fc_vport, bool disable)
 
 	if (IS_T10_PI_CAPABLE(ha) && ql2xenabledif) {
 		if (ha->fw_attributes & BIT_4) {
-			int prot = 0;
+			int prot = 0, guard;
 			vha->flags.difdix_supported = 1;
 			ql_dbg(ql_dbg_user, vha, 0x7082,
 			    "Registered for DIF/DIX type 1 and 3 protection.\n");
@@ -1717,7 +1825,14 @@ qla24xx_vport_create(struct fc_vport *fc_vport, bool disable)
 			    | SHOST_DIX_TYPE1_PROTECTION
 			    | SHOST_DIX_TYPE2_PROTECTION
 			    | SHOST_DIX_TYPE3_PROTECTION);
-			scsi_host_set_guard(vha->host, SHOST_DIX_GUARD_CRC);
+
+			guard = SHOST_DIX_GUARD_CRC;
+
+			if (IS_PI_IPGUARD_CAPABLE(ha) &&
+			    (ql2xenabledif > 1 || IS_PI_DIFB_DIX0_CAPABLE(ha)))
+				guard |= SHOST_DIX_GUARD_IP;
+
+			scsi_host_set_guard(vha->host, guard);
 		} else
 			vha->flags.difdix_supported = 0;
 	}