497 lines
15 KiB
C
497 lines
15 KiB
C
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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 Corporation 2008
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*/
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#include "zfcp_ext.h"
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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 = dev_get_drvdata(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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ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, status, "0x%08x\n",
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atomic_read(&adapter->status));
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ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwnn, "0x%016llx\n",
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adapter->peer_wwnn);
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ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwpn, "0x%016llx\n",
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adapter->peer_wwpn);
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ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_d_id, "0x%06x\n",
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adapter->peer_d_id);
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ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, card_version, "0x%04x\n",
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adapter->hydra_version);
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ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, lic_version, "0x%08x\n",
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adapter->fsf_lic_version);
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ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, hardware_version, "0x%08x\n",
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adapter->hardware_version);
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ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, in_recovery, "%d\n",
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(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(zfcp_port, port, access_denied, "%d\n",
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(atomic_read(&port->status) &
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ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
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ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
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atomic_read(&unit->status));
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ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
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(atomic_read(&unit->status) &
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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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(atomic_read(&unit->status) &
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ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
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ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n",
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(atomic_read(&unit->status) &
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ZFCP_STATUS_UNIT_SHARED) != 0);
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ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n",
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(atomic_read(&unit->status) &
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ZFCP_STATUS_UNIT_READONLY) != 0);
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#define ZFCP_SYSFS_FAILED(_feat_def, _feat, _adapter, _mod_id, _reopen_id) \
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static ssize_t zfcp_sysfs_##_feat##_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 _feat_def *_feat = dev_get_drvdata(dev); \
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\
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if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_ERP_FAILED) \
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return sprintf(buf, "1\n"); \
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else \
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return sprintf(buf, "0\n"); \
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} \
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static ssize_t zfcp_sysfs_##_feat##_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 _feat_def *_feat = dev_get_drvdata(dev); \
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unsigned long val; \
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int retval = 0; \
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\
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down(&zfcp_data.config_sema); \
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if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_REMOVE) { \
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retval = -EBUSY; \
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goto out; \
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} \
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\
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if (strict_strtoul(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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\
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zfcp_erp_modify_##_feat##_status(_feat, _mod_id, NULL, \
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ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);\
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zfcp_erp_##_feat##_reopen(_feat, ZFCP_STATUS_COMMON_ERP_FAILED, \
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_reopen_id, NULL); \
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zfcp_erp_wait(_adapter); \
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out: \
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up(&zfcp_data.config_sema); \
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return retval ? retval : (ssize_t) count; \
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} \
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static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR | S_IRUGO, \
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zfcp_sysfs_##_feat##_failed_show, \
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zfcp_sysfs_##_feat##_failed_store);
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ZFCP_SYSFS_FAILED(zfcp_adapter, adapter, adapter, 44, 93);
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ZFCP_SYSFS_FAILED(zfcp_port, port, port->adapter, 45, 96);
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ZFCP_SYSFS_FAILED(zfcp_unit, unit, unit->port->adapter, 46, 97);
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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 zfcp_adapter *adapter = dev_get_drvdata(dev);
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int ret;
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if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE)
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return -EBUSY;
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ret = zfcp_scan_ports(adapter);
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return ret ? ret : (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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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 zfcp_adapter *adapter = dev_get_drvdata(dev);
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struct zfcp_port *port;
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wwn_t wwpn;
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int retval = 0;
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down(&zfcp_data.config_sema);
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if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) {
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retval = -EBUSY;
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goto out;
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}
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if (strict_strtoull(buf, 0, &wwpn)) {
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retval = -EINVAL;
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goto out;
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}
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write_lock_irq(&zfcp_data.config_lock);
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port = zfcp_get_port_by_wwpn(adapter, wwpn);
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if (port && (atomic_read(&port->refcount) == 0)) {
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zfcp_port_get(port);
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atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
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list_move(&port->list, &adapter->port_remove_lh);
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} else
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port = NULL;
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write_unlock_irq(&zfcp_data.config_lock);
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if (!port) {
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retval = -ENXIO;
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goto out;
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}
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zfcp_erp_port_shutdown(port, 0, 92, NULL);
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zfcp_erp_wait(adapter);
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zfcp_port_put(port);
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zfcp_port_dequeue(port);
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out:
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up(&zfcp_data.config_sema);
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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 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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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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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 = dev_get_drvdata(dev);
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struct zfcp_unit *unit;
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fcp_lun_t fcp_lun;
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int retval = -EINVAL;
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down(&zfcp_data.config_sema);
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if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
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retval = -EBUSY;
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goto out;
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}
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if (strict_strtoull(buf, 0, &fcp_lun))
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goto out;
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unit = zfcp_unit_enqueue(port, fcp_lun);
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if (IS_ERR(unit))
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goto out;
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retval = 0;
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zfcp_erp_unit_reopen(unit, 0, 94, NULL);
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zfcp_erp_wait(unit->port->adapter);
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zfcp_unit_put(unit);
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out:
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up(&zfcp_data.config_sema);
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return retval ? retval : (ssize_t) 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 = dev_get_drvdata(dev);
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struct zfcp_unit *unit;
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fcp_lun_t fcp_lun;
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int retval = 0;
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down(&zfcp_data.config_sema);
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if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
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retval = -EBUSY;
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goto out;
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}
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if (strict_strtoull(buf, 0, &fcp_lun)) {
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retval = -EINVAL;
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goto out;
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}
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write_lock_irq(&zfcp_data.config_lock);
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unit = zfcp_get_unit_by_lun(port, fcp_lun);
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if (unit && (atomic_read(&unit->refcount) == 0)) {
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zfcp_unit_get(unit);
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atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status);
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list_move(&unit->list, &port->unit_remove_lh);
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} else
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unit = NULL;
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write_unlock_irq(&zfcp_data.config_lock);
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if (!unit) {
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retval = -ENXIO;
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goto out;
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}
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zfcp_erp_unit_shutdown(unit, 0, 95, NULL);
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zfcp_erp_wait(unit->port->adapter);
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zfcp_unit_put(unit);
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zfcp_unit_dequeue(unit);
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out:
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up(&zfcp_data.config_sema);
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return retval ? retval : (ssize_t) 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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static struct attribute *zfcp_port_ns_attrs[] = {
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&dev_attr_port_failed.attr,
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&dev_attr_port_in_recovery.attr,
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&dev_attr_port_status.attr,
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&dev_attr_port_access_denied.attr,
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NULL
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};
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/**
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* zfcp_sysfs_ns_port_attrs - sysfs attributes for nameserver
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*/
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struct attribute_group zfcp_sysfs_ns_port_attrs = {
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.attrs = zfcp_port_ns_attrs,
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};
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static struct attribute *zfcp_port_no_ns_attrs[] = {
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&dev_attr_unit_add.attr,
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&dev_attr_unit_remove.attr,
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&dev_attr_port_failed.attr,
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&dev_attr_port_in_recovery.attr,
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&dev_attr_port_status.attr,
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&dev_attr_port_access_denied.attr,
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NULL
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};
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/**
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* zfcp_sysfs_port_attrs - sysfs attributes for all other ports
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*/
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struct attribute_group zfcp_sysfs_port_attrs = {
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.attrs = zfcp_port_no_ns_attrs,
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};
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static struct attribute *zfcp_unit_attrs[] = {
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&dev_attr_unit_failed.attr,
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&dev_attr_unit_in_recovery.attr,
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&dev_attr_unit_status.attr,
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&dev_attr_unit_access_denied.attr,
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&dev_attr_unit_access_shared.attr,
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&dev_attr_unit_access_readonly.attr,
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NULL
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};
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struct attribute_group zfcp_sysfs_unit_attrs = {
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.attrs = zfcp_unit_attrs,
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};
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#define ZFCP_DEFINE_LATENCY_ATTR(_name) \
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static ssize_t \
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zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
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struct device_attribute *attr, \
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char *buf) { \
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struct scsi_device *sdev = to_scsi_device(dev); \
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struct zfcp_unit *unit = sdev->hostdata; \
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struct zfcp_latencies *lat = &unit->latencies; \
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struct zfcp_adapter *adapter = unit->port->adapter; \
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unsigned long flags; \
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unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
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\
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spin_lock_irqsave(&lat->lock, flags); \
|
||
|
|
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_irqrestore(&lat->lock, flags); \
|
||
|
|
\
|
||
|
|
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_unit *unit = sdev->hostdata; \
|
||
|
|
struct zfcp_latencies *lat = &unit->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_unit *unit = sdev->hostdata; \
|
||
|
|
\
|
||
|
|
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",
|
||
|
|
unit->port->adapter->ccw_device->dev.bus_id);
|
||
|
|
ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", unit->port->wwpn);
|
||
|
|
ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", unit->fcp_lun);
|
||
|
|
|
||
|
|
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,
|
||
|
|
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, qtcb_port);
|
||
|
|
if (!retval)
|
||
|
|
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, qtcb_config);
|
||
|
|
if (!retval)
|
||
|
|
*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);
|
||
|
|
|
||
|
|
struct device_attribute *zfcp_sysfs_shost_attrs[] = {
|
||
|
|
&dev_attr_utilization,
|
||
|
|
&dev_attr_requests,
|
||
|
|
&dev_attr_megabytes,
|
||
|
|
&dev_attr_seconds_active,
|
||
|
|
NULL
|
||
|
|
};
|