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912 lines
28 KiB
912 lines
28 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* zfcp device driver |
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* |
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* sysfs attributes. |
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* |
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* Copyright IBM Corp. 2008, 2020 |
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*/ |
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|
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#define KMSG_COMPONENT "zfcp" |
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
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|
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#include <linux/slab.h> |
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#include "zfcp_diag.h" |
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#include "zfcp_ext.h" |
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|
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#define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \ |
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struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\ |
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_show, _store) |
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#define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \ |
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static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ |
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struct device_attribute *at,\ |
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char *buf) \ |
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{ \ |
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struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \ |
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\ |
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return sprintf(buf, _format, _value); \ |
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} \ |
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static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ |
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zfcp_sysfs_##_feat##_##_name##_show, NULL); |
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#define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value) \ |
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static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ |
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struct device_attribute *at,\ |
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char *buf) \ |
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{ \ |
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return sprintf(buf, _format, _value); \ |
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} \ |
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static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ |
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zfcp_sysfs_##_feat##_##_name##_show, NULL); |
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|
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#define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \ |
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static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ |
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struct device_attribute *at,\ |
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char *buf) \ |
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{ \ |
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struct ccw_device *cdev = to_ccwdev(dev); \ |
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struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \ |
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int i; \ |
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\ |
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if (!adapter) \ |
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return -ENODEV; \ |
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\ |
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i = sprintf(buf, _format, _value); \ |
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zfcp_ccw_adapter_put(adapter); \ |
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return i; \ |
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} \ |
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static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \ |
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zfcp_sysfs_adapter_##_name##_show, NULL); |
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|
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ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status)); |
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ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n", |
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(unsigned long long) adapter->peer_wwnn); |
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ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n", |
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(unsigned long long) adapter->peer_wwpn); |
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ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id); |
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ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version); |
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ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version); |
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ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version); |
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ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) & |
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ZFCP_STATUS_COMMON_ERP_INUSE) != 0); |
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ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n", |
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atomic_read(&port->status)); |
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ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n", |
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(atomic_read(&port->status) & |
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ZFCP_STATUS_COMMON_ERP_INUSE) != 0); |
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ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0); |
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ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n", |
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zfcp_unit_sdev_status(unit)); |
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ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n", |
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(zfcp_unit_sdev_status(unit) & |
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ZFCP_STATUS_COMMON_ERP_INUSE) != 0); |
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ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n", |
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(zfcp_unit_sdev_status(unit) & |
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ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); |
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ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0); |
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ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0); |
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static ssize_t zfcp_sysfs_port_failed_show(struct device *dev, |
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struct device_attribute *attr, |
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char *buf) |
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{ |
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struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); |
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|
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if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) |
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return sprintf(buf, "1\n"); |
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return sprintf(buf, "0\n"); |
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} |
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static ssize_t zfcp_sysfs_port_failed_store(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); |
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unsigned long val; |
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if (kstrtoul(buf, 0, &val) || val != 0) |
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return -EINVAL; |
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zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING); |
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zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2"); |
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zfcp_erp_wait(port->adapter); |
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return count; |
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} |
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static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO, |
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zfcp_sysfs_port_failed_show, |
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zfcp_sysfs_port_failed_store); |
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static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev, |
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struct device_attribute *attr, |
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char *buf) |
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{ |
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struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); |
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struct scsi_device *sdev; |
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unsigned int status, failed = 1; |
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sdev = zfcp_unit_sdev(unit); |
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if (sdev) { |
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status = atomic_read(&sdev_to_zfcp(sdev)->status); |
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failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; |
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scsi_device_put(sdev); |
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} |
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return sprintf(buf, "%d\n", failed); |
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} |
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static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); |
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unsigned long val; |
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struct scsi_device *sdev; |
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if (kstrtoul(buf, 0, &val) || val != 0) |
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return -EINVAL; |
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sdev = zfcp_unit_sdev(unit); |
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if (sdev) { |
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zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); |
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zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, |
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"syufai2"); |
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zfcp_erp_wait(unit->port->adapter); |
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} else |
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zfcp_unit_scsi_scan(unit); |
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|
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return count; |
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} |
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static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO, |
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zfcp_sysfs_unit_failed_show, |
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zfcp_sysfs_unit_failed_store); |
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static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev, |
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struct device_attribute *attr, |
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char *buf) |
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{ |
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struct ccw_device *cdev = to_ccwdev(dev); |
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struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); |
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int i; |
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if (!adapter) |
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return -ENODEV; |
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if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) |
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i = sprintf(buf, "1\n"); |
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else |
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i = sprintf(buf, "0\n"); |
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zfcp_ccw_adapter_put(adapter); |
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return i; |
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} |
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static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct ccw_device *cdev = to_ccwdev(dev); |
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struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); |
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unsigned long val; |
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int retval = 0; |
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if (!adapter) |
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return -ENODEV; |
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if (kstrtoul(buf, 0, &val) || val != 0) { |
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retval = -EINVAL; |
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goto out; |
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} |
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zfcp_erp_adapter_reset_sync(adapter, "syafai2"); |
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out: |
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zfcp_ccw_adapter_put(adapter); |
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return retval ? retval : (ssize_t) count; |
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} |
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static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO, |
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zfcp_sysfs_adapter_failed_show, |
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zfcp_sysfs_adapter_failed_store); |
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static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct ccw_device *cdev = to_ccwdev(dev); |
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struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); |
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int retval = 0; |
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if (!adapter) |
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return -ENODEV; |
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/* |
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* If `scsi_host` is missing, we can't schedule `scan_work`, as it |
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* makes use of the corresponding fc_host object. But this state is |
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* only possible if xconfig/xport data has never completed yet, |
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* and we couldn't successfully scan for ports anyway. |
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*/ |
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if (adapter->scsi_host == NULL) { |
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retval = -ENODEV; |
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goto out; |
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} |
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/* |
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* Users wish is our command: immediately schedule and flush a |
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* worker to conduct a synchronous port scan, that is, neither |
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* a random delay nor a rate limit is applied here. |
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*/ |
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queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0); |
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flush_delayed_work(&adapter->scan_work); |
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out: |
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zfcp_ccw_adapter_put(adapter); |
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return retval ? retval : (ssize_t) count; |
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} |
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static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, |
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zfcp_sysfs_port_rescan_store); |
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DEFINE_MUTEX(zfcp_sysfs_port_units_mutex); |
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static void zfcp_sysfs_port_set_removing(struct zfcp_port *const port) |
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{ |
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lockdep_assert_held(&zfcp_sysfs_port_units_mutex); |
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atomic_set(&port->units, -1); |
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} |
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bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port) |
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{ |
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lockdep_assert_held(&zfcp_sysfs_port_units_mutex); |
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return atomic_read(&port->units) == -1; |
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} |
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static bool zfcp_sysfs_port_in_use(struct zfcp_port *const port) |
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{ |
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struct zfcp_adapter *const adapter = port->adapter; |
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unsigned long flags; |
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struct scsi_device *sdev; |
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bool in_use = true; |
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mutex_lock(&zfcp_sysfs_port_units_mutex); |
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if (atomic_read(&port->units) > 0) |
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goto unlock_port_units_mutex; /* zfcp_unit(s) under port */ |
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spin_lock_irqsave(adapter->scsi_host->host_lock, flags); |
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__shost_for_each_device(sdev, adapter->scsi_host) { |
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const struct zfcp_scsi_dev *zsdev = sdev_to_zfcp(sdev); |
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if (sdev->sdev_state == SDEV_DEL || |
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sdev->sdev_state == SDEV_CANCEL) |
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continue; |
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if (zsdev->port != port) |
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continue; |
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/* alive scsi_device under port of interest */ |
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goto unlock_host_lock; |
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} |
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/* port is about to be removed, so no more unit_add or slave_alloc */ |
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zfcp_sysfs_port_set_removing(port); |
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in_use = false; |
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unlock_host_lock: |
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spin_unlock_irqrestore(adapter->scsi_host->host_lock, flags); |
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unlock_port_units_mutex: |
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mutex_unlock(&zfcp_sysfs_port_units_mutex); |
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return in_use; |
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} |
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static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct ccw_device *cdev = to_ccwdev(dev); |
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struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); |
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struct zfcp_port *port; |
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u64 wwpn; |
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int retval = -EINVAL; |
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if (!adapter) |
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return -ENODEV; |
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if (kstrtoull(buf, 0, (unsigned long long *) &wwpn)) |
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goto out; |
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port = zfcp_get_port_by_wwpn(adapter, wwpn); |
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if (!port) |
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goto out; |
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else |
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retval = 0; |
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if (zfcp_sysfs_port_in_use(port)) { |
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retval = -EBUSY; |
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put_device(&port->dev); /* undo zfcp_get_port_by_wwpn() */ |
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goto out; |
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} |
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write_lock_irq(&adapter->port_list_lock); |
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list_del(&port->list); |
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write_unlock_irq(&adapter->port_list_lock); |
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put_device(&port->dev); |
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zfcp_erp_port_shutdown(port, 0, "syprs_1"); |
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device_unregister(&port->dev); |
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out: |
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zfcp_ccw_adapter_put(adapter); |
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return retval ? retval : (ssize_t) count; |
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} |
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static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, |
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zfcp_sysfs_port_remove_store); |
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static ssize_t |
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zfcp_sysfs_adapter_diag_max_age_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); |
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ssize_t rc; |
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if (!adapter) |
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return -ENODEV; |
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/* ceil(log(2^64 - 1) / log(10)) = 20 */ |
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rc = scnprintf(buf, 20 + 2, "%lu\n", adapter->diagnostics->max_age); |
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zfcp_ccw_adapter_put(adapter); |
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return rc; |
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} |
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static ssize_t |
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zfcp_sysfs_adapter_diag_max_age_store(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); |
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unsigned long max_age; |
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ssize_t rc; |
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if (!adapter) |
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return -ENODEV; |
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rc = kstrtoul(buf, 10, &max_age); |
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if (rc != 0) |
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goto out; |
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adapter->diagnostics->max_age = max_age; |
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rc = count; |
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out: |
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zfcp_ccw_adapter_put(adapter); |
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return rc; |
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} |
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static ZFCP_DEV_ATTR(adapter, diag_max_age, 0644, |
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zfcp_sysfs_adapter_diag_max_age_show, |
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zfcp_sysfs_adapter_diag_max_age_store); |
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static ssize_t zfcp_sysfs_adapter_fc_security_show( |
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struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct ccw_device *cdev = to_ccwdev(dev); |
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struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); |
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unsigned int status; |
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int i; |
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if (!adapter) |
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return -ENODEV; |
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/* |
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* Adapter status COMMON_OPEN implies xconf data and xport data |
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* was done. Adapter FC Endpoint Security capability remains |
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* unchanged in case of COMMON_ERP_FAILED (e.g. due to local link |
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* down). |
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*/ |
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status = atomic_read(&adapter->status); |
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if (0 == (status & ZFCP_STATUS_COMMON_OPEN)) |
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i = sprintf(buf, "unknown\n"); |
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else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY)) |
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i = sprintf(buf, "unsupported\n"); |
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else { |
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i = zfcp_fsf_scnprint_fc_security( |
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buf, PAGE_SIZE - 1, adapter->fc_security_algorithms, |
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ZFCP_FSF_PRINT_FMT_LIST); |
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i += scnprintf(buf + i, PAGE_SIZE - i, "\n"); |
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} |
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zfcp_ccw_adapter_put(adapter); |
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return i; |
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} |
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static ZFCP_DEV_ATTR(adapter, fc_security, S_IRUGO, |
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zfcp_sysfs_adapter_fc_security_show, |
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NULL); |
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|
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static struct attribute *zfcp_adapter_attrs[] = { |
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&dev_attr_adapter_failed.attr, |
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&dev_attr_adapter_in_recovery.attr, |
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&dev_attr_adapter_port_remove.attr, |
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&dev_attr_adapter_port_rescan.attr, |
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&dev_attr_adapter_peer_wwnn.attr, |
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&dev_attr_adapter_peer_wwpn.attr, |
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&dev_attr_adapter_peer_d_id.attr, |
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&dev_attr_adapter_card_version.attr, |
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&dev_attr_adapter_lic_version.attr, |
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&dev_attr_adapter_status.attr, |
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&dev_attr_adapter_hardware_version.attr, |
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&dev_attr_adapter_diag_max_age.attr, |
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&dev_attr_adapter_fc_security.attr, |
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NULL |
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}; |
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struct attribute_group zfcp_sysfs_adapter_attrs = { |
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.attrs = zfcp_adapter_attrs, |
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}; |
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|
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static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); |
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u64 fcp_lun; |
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int retval; |
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|
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if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) |
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return -EINVAL; |
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retval = zfcp_unit_add(port, fcp_lun); |
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if (retval) |
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return retval; |
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return count; |
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} |
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static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); |
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static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); |
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u64 fcp_lun; |
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if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) |
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return -EINVAL; |
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if (zfcp_unit_remove(port, fcp_lun)) |
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return -EINVAL; |
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return count; |
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} |
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static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); |
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|
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static ssize_t zfcp_sysfs_port_fc_security_show(struct device *dev, |
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struct device_attribute *attr, |
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char *buf) |
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{ |
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struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); |
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struct zfcp_adapter *adapter = port->adapter; |
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unsigned int status = atomic_read(&port->status); |
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int i; |
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|
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if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || |
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0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || |
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0 == (status & ZFCP_STATUS_PORT_PHYS_OPEN) || |
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0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED) || |
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0 != (status & ZFCP_STATUS_COMMON_ACCESS_BOXED)) |
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i = sprintf(buf, "unknown\n"); |
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else if (!(adapter->adapter_features & FSF_FEATURE_FC_SECURITY)) |
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i = sprintf(buf, "unsupported\n"); |
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else { |
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i = zfcp_fsf_scnprint_fc_security( |
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buf, PAGE_SIZE - 1, port->connection_info, |
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ZFCP_FSF_PRINT_FMT_SINGLEITEM); |
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i += scnprintf(buf + i, PAGE_SIZE - i, "\n"); |
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} |
|
|
|
return i; |
|
} |
|
static ZFCP_DEV_ATTR(port, fc_security, S_IRUGO, |
|
zfcp_sysfs_port_fc_security_show, |
|
NULL); |
|
|
|
static struct attribute *zfcp_port_attrs[] = { |
|
&dev_attr_unit_add.attr, |
|
&dev_attr_unit_remove.attr, |
|
&dev_attr_port_failed.attr, |
|
&dev_attr_port_in_recovery.attr, |
|
&dev_attr_port_status.attr, |
|
&dev_attr_port_access_denied.attr, |
|
&dev_attr_port_fc_security.attr, |
|
NULL |
|
}; |
|
static struct attribute_group zfcp_port_attr_group = { |
|
.attrs = zfcp_port_attrs, |
|
}; |
|
const struct attribute_group *zfcp_port_attr_groups[] = { |
|
&zfcp_port_attr_group, |
|
NULL, |
|
}; |
|
|
|
static struct attribute *zfcp_unit_attrs[] = { |
|
&dev_attr_unit_failed.attr, |
|
&dev_attr_unit_in_recovery.attr, |
|
&dev_attr_unit_status.attr, |
|
&dev_attr_unit_access_denied.attr, |
|
&dev_attr_unit_access_shared.attr, |
|
&dev_attr_unit_access_readonly.attr, |
|
NULL |
|
}; |
|
static struct attribute_group zfcp_unit_attr_group = { |
|
.attrs = zfcp_unit_attrs, |
|
}; |
|
const struct attribute_group *zfcp_unit_attr_groups[] = { |
|
&zfcp_unit_attr_group, |
|
NULL, |
|
}; |
|
|
|
#define ZFCP_DEFINE_LATENCY_ATTR(_name) \ |
|
static ssize_t \ |
|
zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ |
|
struct device_attribute *attr, \ |
|
char *buf) { \ |
|
struct scsi_device *sdev = to_scsi_device(dev); \ |
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ |
|
struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ |
|
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \ |
|
unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ |
|
\ |
|
spin_lock_bh(&lat->lock); \ |
|
fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ |
|
fmin = lat->_name.fabric.min * adapter->timer_ticks; \ |
|
fmax = lat->_name.fabric.max * adapter->timer_ticks; \ |
|
csum = lat->_name.channel.sum * adapter->timer_ticks; \ |
|
cmin = lat->_name.channel.min * adapter->timer_ticks; \ |
|
cmax = lat->_name.channel.max * adapter->timer_ticks; \ |
|
cc = lat->_name.counter; \ |
|
spin_unlock_bh(&lat->lock); \ |
|
\ |
|
do_div(fsum, 1000); \ |
|
do_div(fmin, 1000); \ |
|
do_div(fmax, 1000); \ |
|
do_div(csum, 1000); \ |
|
do_div(cmin, 1000); \ |
|
do_div(cmax, 1000); \ |
|
\ |
|
return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ |
|
fmin, fmax, fsum, cmin, cmax, csum, cc); \ |
|
} \ |
|
static ssize_t \ |
|
zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ |
|
struct device_attribute *attr, \ |
|
const char *buf, size_t count) \ |
|
{ \ |
|
struct scsi_device *sdev = to_scsi_device(dev); \ |
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ |
|
struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ |
|
unsigned long flags; \ |
|
\ |
|
spin_lock_irqsave(&lat->lock, flags); \ |
|
lat->_name.fabric.sum = 0; \ |
|
lat->_name.fabric.min = 0xFFFFFFFF; \ |
|
lat->_name.fabric.max = 0; \ |
|
lat->_name.channel.sum = 0; \ |
|
lat->_name.channel.min = 0xFFFFFFFF; \ |
|
lat->_name.channel.max = 0; \ |
|
lat->_name.counter = 0; \ |
|
spin_unlock_irqrestore(&lat->lock, flags); \ |
|
\ |
|
return (ssize_t) count; \ |
|
} \ |
|
static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ |
|
zfcp_sysfs_unit_##_name##_latency_show, \ |
|
zfcp_sysfs_unit_##_name##_latency_store); |
|
|
|
ZFCP_DEFINE_LATENCY_ATTR(read); |
|
ZFCP_DEFINE_LATENCY_ATTR(write); |
|
ZFCP_DEFINE_LATENCY_ATTR(cmd); |
|
|
|
#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ |
|
static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ |
|
struct device_attribute *attr,\ |
|
char *buf) \ |
|
{ \ |
|
struct scsi_device *sdev = to_scsi_device(dev); \ |
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ |
|
\ |
|
return sprintf(buf, _format, _value); \ |
|
} \ |
|
static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); |
|
|
|
ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", |
|
dev_name(&zfcp_sdev->port->adapter->ccw_device->dev)); |
|
ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", |
|
(unsigned long long) zfcp_sdev->port->wwpn); |
|
|
|
static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev, |
|
struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct scsi_device *sdev = to_scsi_device(dev); |
|
|
|
return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev)); |
|
} |
|
static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL); |
|
|
|
ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n", |
|
(atomic_read(&zfcp_sdev->status) & |
|
ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); |
|
|
|
static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev, |
|
struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct scsi_device *sdev = to_scsi_device(dev); |
|
unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status); |
|
unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; |
|
|
|
return sprintf(buf, "%d\n", failed); |
|
} |
|
|
|
static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev, |
|
struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct scsi_device *sdev = to_scsi_device(dev); |
|
unsigned long val; |
|
|
|
if (kstrtoul(buf, 0, &val) || val != 0) |
|
return -EINVAL; |
|
|
|
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); |
|
zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, |
|
"syufai3"); |
|
zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter); |
|
|
|
return count; |
|
} |
|
static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO, |
|
zfcp_sysfs_scsi_zfcp_failed_show, |
|
zfcp_sysfs_scsi_zfcp_failed_store); |
|
|
|
ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n", |
|
(atomic_read(&zfcp_sdev->status) & |
|
ZFCP_STATUS_COMMON_ERP_INUSE) != 0); |
|
|
|
ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n", |
|
atomic_read(&zfcp_sdev->status)); |
|
|
|
struct device_attribute *zfcp_sysfs_sdev_attrs[] = { |
|
&dev_attr_fcp_lun, |
|
&dev_attr_wwpn, |
|
&dev_attr_hba_id, |
|
&dev_attr_read_latency, |
|
&dev_attr_write_latency, |
|
&dev_attr_cmd_latency, |
|
&dev_attr_zfcp_access_denied, |
|
&dev_attr_zfcp_failed, |
|
&dev_attr_zfcp_in_recovery, |
|
&dev_attr_zfcp_status, |
|
NULL |
|
}; |
|
|
|
static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, |
|
struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct Scsi_Host *scsi_host = dev_to_shost(dev); |
|
struct fsf_qtcb_bottom_port *qtcb_port; |
|
struct zfcp_adapter *adapter; |
|
int retval; |
|
|
|
adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; |
|
if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) |
|
return -EOPNOTSUPP; |
|
|
|
qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); |
|
if (!qtcb_port) |
|
return -ENOMEM; |
|
|
|
retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); |
|
if (retval == 0 || retval == -EAGAIN) |
|
retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, |
|
qtcb_port->cb_util, qtcb_port->a_util); |
|
kfree(qtcb_port); |
|
return retval; |
|
} |
|
static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); |
|
|
|
static int zfcp_sysfs_adapter_ex_config(struct device *dev, |
|
struct fsf_statistics_info *stat_inf) |
|
{ |
|
struct Scsi_Host *scsi_host = dev_to_shost(dev); |
|
struct fsf_qtcb_bottom_config *qtcb_config; |
|
struct zfcp_adapter *adapter; |
|
int retval; |
|
|
|
adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; |
|
if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) |
|
return -EOPNOTSUPP; |
|
|
|
qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), |
|
GFP_KERNEL); |
|
if (!qtcb_config) |
|
return -ENOMEM; |
|
|
|
retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); |
|
if (retval == 0 || retval == -EAGAIN) |
|
*stat_inf = qtcb_config->stat_info; |
|
|
|
kfree(qtcb_config); |
|
return retval; |
|
} |
|
|
|
#define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ |
|
static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ |
|
struct device_attribute *attr,\ |
|
char *buf) \ |
|
{ \ |
|
struct fsf_statistics_info stat_info; \ |
|
int retval; \ |
|
\ |
|
retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ |
|
if (retval) \ |
|
return retval; \ |
|
\ |
|
return sprintf(buf, _format, ## _arg); \ |
|
} \ |
|
static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); |
|
|
|
ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", |
|
(unsigned long long) stat_info.input_req, |
|
(unsigned long long) stat_info.output_req, |
|
(unsigned long long) stat_info.control_req); |
|
|
|
ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", |
|
(unsigned long long) stat_info.input_mb, |
|
(unsigned long long) stat_info.output_mb); |
|
|
|
ZFCP_SHOST_ATTR(seconds_active, "%llu\n", |
|
(unsigned long long) stat_info.seconds_act); |
|
|
|
static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, |
|
struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct Scsi_Host *scsi_host = class_to_shost(dev); |
|
struct zfcp_qdio *qdio = |
|
((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; |
|
u64 util; |
|
|
|
spin_lock_bh(&qdio->stat_lock); |
|
util = qdio->req_q_util; |
|
spin_unlock_bh(&qdio->stat_lock); |
|
|
|
return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), |
|
(unsigned long long)util); |
|
} |
|
static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); |
|
|
|
struct device_attribute *zfcp_sysfs_shost_attrs[] = { |
|
&dev_attr_utilization, |
|
&dev_attr_requests, |
|
&dev_attr_megabytes, |
|
&dev_attr_seconds_active, |
|
&dev_attr_queue_full, |
|
NULL |
|
}; |
|
|
|
static ssize_t zfcp_sysfs_adapter_diag_b2b_credit_show( |
|
struct device *dev, struct device_attribute *attr, char *buf) |
|
{ |
|
struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); |
|
struct zfcp_diag_header *diag_hdr; |
|
struct fc_els_flogi *nsp; |
|
ssize_t rc = -ENOLINK; |
|
unsigned long flags; |
|
unsigned int status; |
|
|
|
if (!adapter) |
|
return -ENODEV; |
|
|
|
status = atomic_read(&adapter->status); |
|
if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || |
|
0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || |
|
0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) |
|
goto out; |
|
|
|
diag_hdr = &adapter->diagnostics->config_data.header; |
|
|
|
rc = zfcp_diag_update_buffer_limited( |
|
adapter, diag_hdr, zfcp_diag_update_config_data_buffer); |
|
if (rc != 0) |
|
goto out; |
|
|
|
spin_lock_irqsave(&diag_hdr->access_lock, flags); |
|
/* nport_serv_param doesn't contain the ELS_Command code */ |
|
nsp = (struct fc_els_flogi *)((unsigned long) |
|
adapter->diagnostics->config_data |
|
.data.nport_serv_param - |
|
sizeof(u32)); |
|
|
|
rc = scnprintf(buf, 5 + 2, "%hu\n", |
|
be16_to_cpu(nsp->fl_csp.sp_bb_cred)); |
|
spin_unlock_irqrestore(&diag_hdr->access_lock, flags); |
|
|
|
out: |
|
zfcp_ccw_adapter_put(adapter); |
|
return rc; |
|
} |
|
static ZFCP_DEV_ATTR(adapter_diag, b2b_credit, 0400, |
|
zfcp_sysfs_adapter_diag_b2b_credit_show, NULL); |
|
|
|
#define ZFCP_DEFINE_DIAG_SFP_ATTR(_name, _qtcb_member, _prtsize, _prtfmt) \ |
|
static ssize_t zfcp_sysfs_adapter_diag_sfp_##_name##_show( \ |
|
struct device *dev, struct device_attribute *attr, char *buf) \ |
|
{ \ |
|
struct zfcp_adapter *const adapter = \ |
|
zfcp_ccw_adapter_by_cdev(to_ccwdev(dev)); \ |
|
struct zfcp_diag_header *diag_hdr; \ |
|
ssize_t rc = -ENOLINK; \ |
|
unsigned long flags; \ |
|
unsigned int status; \ |
|
\ |
|
if (!adapter) \ |
|
return -ENODEV; \ |
|
\ |
|
status = atomic_read(&adapter->status); \ |
|
if (0 == (status & ZFCP_STATUS_COMMON_OPEN) || \ |
|
0 == (status & ZFCP_STATUS_COMMON_UNBLOCKED) || \ |
|
0 != (status & ZFCP_STATUS_COMMON_ERP_FAILED)) \ |
|
goto out; \ |
|
\ |
|
if (!zfcp_diag_support_sfp(adapter)) { \ |
|
rc = -EOPNOTSUPP; \ |
|
goto out; \ |
|
} \ |
|
\ |
|
diag_hdr = &adapter->diagnostics->port_data.header; \ |
|
\ |
|
rc = zfcp_diag_update_buffer_limited( \ |
|
adapter, diag_hdr, zfcp_diag_update_port_data_buffer); \ |
|
if (rc != 0) \ |
|
goto out; \ |
|
\ |
|
spin_lock_irqsave(&diag_hdr->access_lock, flags); \ |
|
rc = scnprintf( \ |
|
buf, (_prtsize) + 2, _prtfmt "\n", \ |
|
adapter->diagnostics->port_data.data._qtcb_member); \ |
|
spin_unlock_irqrestore(&diag_hdr->access_lock, flags); \ |
|
\ |
|
out: \ |
|
zfcp_ccw_adapter_put(adapter); \ |
|
return rc; \ |
|
} \ |
|
static ZFCP_DEV_ATTR(adapter_diag_sfp, _name, 0400, \ |
|
zfcp_sysfs_adapter_diag_sfp_##_name##_show, NULL) |
|
|
|
ZFCP_DEFINE_DIAG_SFP_ATTR(temperature, temperature, 6, "%hd"); |
|
ZFCP_DEFINE_DIAG_SFP_ATTR(vcc, vcc, 5, "%hu"); |
|
ZFCP_DEFINE_DIAG_SFP_ATTR(tx_bias, tx_bias, 5, "%hu"); |
|
ZFCP_DEFINE_DIAG_SFP_ATTR(tx_power, tx_power, 5, "%hu"); |
|
ZFCP_DEFINE_DIAG_SFP_ATTR(rx_power, rx_power, 5, "%hu"); |
|
ZFCP_DEFINE_DIAG_SFP_ATTR(port_tx_type, sfp_flags.port_tx_type, 2, "%hu"); |
|
ZFCP_DEFINE_DIAG_SFP_ATTR(optical_port, sfp_flags.optical_port, 1, "%hu"); |
|
ZFCP_DEFINE_DIAG_SFP_ATTR(sfp_invalid, sfp_flags.sfp_invalid, 1, "%hu"); |
|
ZFCP_DEFINE_DIAG_SFP_ATTR(connector_type, sfp_flags.connector_type, 1, "%hu"); |
|
ZFCP_DEFINE_DIAG_SFP_ATTR(fec_active, sfp_flags.fec_active, 1, "%hu"); |
|
|
|
static struct attribute *zfcp_sysfs_diag_attrs[] = { |
|
&dev_attr_adapter_diag_sfp_temperature.attr, |
|
&dev_attr_adapter_diag_sfp_vcc.attr, |
|
&dev_attr_adapter_diag_sfp_tx_bias.attr, |
|
&dev_attr_adapter_diag_sfp_tx_power.attr, |
|
&dev_attr_adapter_diag_sfp_rx_power.attr, |
|
&dev_attr_adapter_diag_sfp_port_tx_type.attr, |
|
&dev_attr_adapter_diag_sfp_optical_port.attr, |
|
&dev_attr_adapter_diag_sfp_sfp_invalid.attr, |
|
&dev_attr_adapter_diag_sfp_connector_type.attr, |
|
&dev_attr_adapter_diag_sfp_fec_active.attr, |
|
&dev_attr_adapter_diag_b2b_credit.attr, |
|
NULL, |
|
}; |
|
|
|
const struct attribute_group zfcp_sysfs_diag_attr_group = { |
|
.name = "diagnostics", |
|
.attrs = zfcp_sysfs_diag_attrs, |
|
};
|
|
|