578 lines
17 KiB
C
578 lines
17 KiB
C
/*
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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, 2010
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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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#include <linux/slab.h>
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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 = 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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#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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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(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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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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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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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_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
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zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
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"syafai2");
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zfcp_erp_wait(adapter);
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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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if (!adapter)
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return -ENODEV;
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/* sync the user-space- with the kernel-invocation of scan_work */
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queue_work(adapter->work_queue, &adapter->scan_work);
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flush_work(&adapter->scan_work);
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zfcp_ccw_adapter_put(adapter);
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return (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 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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mutex_lock(&zfcp_sysfs_port_units_mutex);
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if (atomic_read(&port->units) > 0) {
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retval = -EBUSY;
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mutex_unlock(&zfcp_sysfs_port_units_mutex);
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goto out;
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}
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/* port is about to be removed, so no more unit_add */
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atomic_set(&port->units, -1);
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mutex_unlock(&zfcp_sysfs_port_units_mutex);
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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 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 = container_of(dev, struct zfcp_port, dev);
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u64 fcp_lun;
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int retval;
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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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static struct attribute *zfcp_port_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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static struct attribute_group zfcp_port_attr_group = {
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.attrs = zfcp_port_attrs,
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};
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const struct attribute_group *zfcp_port_attr_groups[] = {
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&zfcp_port_attr_group,
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NULL,
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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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static struct attribute_group zfcp_unit_attr_group = {
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.attrs = zfcp_unit_attrs,
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};
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const struct attribute_group *zfcp_unit_attr_groups[] = {
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&zfcp_unit_attr_group,
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NULL,
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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_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
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struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
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struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \
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unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
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\
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spin_lock_bh(&lat->lock); \
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fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
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fmin = lat->_name.fabric.min * adapter->timer_ticks; \
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fmax = lat->_name.fabric.max * adapter->timer_ticks; \
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csum = lat->_name.channel.sum * adapter->timer_ticks; \
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cmin = lat->_name.channel.min * adapter->timer_ticks; \
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cmax = lat->_name.channel.max * adapter->timer_ticks; \
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cc = lat->_name.counter; \
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spin_unlock_bh(&lat->lock); \
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\
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do_div(fsum, 1000); \
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do_div(fmin, 1000); \
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do_div(fmax, 1000); \
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do_div(csum, 1000); \
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do_div(cmin, 1000); \
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do_div(cmax, 1000); \
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\
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return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
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fmin, fmax, fsum, cmin, cmax, csum, cc); \
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} \
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static ssize_t \
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zfcp_sysfs_unit_##_name##_latency_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 scsi_device *sdev = to_scsi_device(dev); \
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struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
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struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
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unsigned long flags; \
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\
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spin_lock_irqsave(&lat->lock, flags); \
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lat->_name.fabric.sum = 0; \
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lat->_name.fabric.min = 0xFFFFFFFF; \
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lat->_name.fabric.max = 0; \
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lat->_name.channel.sum = 0; \
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lat->_name.channel.min = 0xFFFFFFFF; \
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lat->_name.channel.max = 0; \
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lat->_name.counter = 0; \
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spin_unlock_irqrestore(&lat->lock, flags); \
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\
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return (ssize_t) count; \
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} \
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static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
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zfcp_sysfs_unit_##_name##_latency_show, \
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zfcp_sysfs_unit_##_name##_latency_store);
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ZFCP_DEFINE_LATENCY_ATTR(read);
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ZFCP_DEFINE_LATENCY_ATTR(write);
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ZFCP_DEFINE_LATENCY_ATTR(cmd);
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#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
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static ssize_t zfcp_sysfs_scsi_##_name##_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 scsi_device *sdev = to_scsi_device(dev); \
|
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
|
|
struct zfcp_port *port = zfcp_sdev->port; \
|
|
\
|
|
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(&port->adapter->ccw_device->dev));
|
|
ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
|
|
(unsigned long long) 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);
|
|
|
|
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->qdio, 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->qdio, 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);
|
|
|
|
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
|
|
};
|