a53c8fab3f
Remove the file name from the comment at top of many files. In most cases the file name was wrong anyway, so it's rather pointless. Also unify the IBM copyright statement. We did have a lot of sightly different statements and wanted to change them one after another whenever a file gets touched. However that never happened. Instead people start to take the old/"wrong" statements to use as a template for new files. So unify all of them in one go. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
554 lines
17 KiB
C
554 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_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(zfcp_unit, unit, access_shared, "%d\n",
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(zfcp_unit_sdev_status(unit) &
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ZFCP_STATUS_LUN_SHARED) != 0);
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ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n",
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(zfcp_unit_sdev_status(unit) &
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ZFCP_STATUS_LUN_READONLY) != 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 (strict_strtoul(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 (strict_strtoul(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 (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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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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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 (strict_strtoull(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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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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zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
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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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if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
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return -EINVAL;
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if (zfcp_unit_add(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_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 (strict_strtoull(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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/**
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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_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_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); \
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struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
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struct zfcp_port *port = zfcp_sdev->port; \
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\
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return sprintf(buf, _format, _value); \
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} \
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static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
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ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
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dev_name(&port->adapter->ccw_device->dev));
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ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
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(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
|
|
};
|