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linux_dsm_epyc7002/drivers/s390/scsi/zfcp_sysfs.c
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00

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// SPDX-License-Identifier: GPL-2.0
/*
* zfcp device driver
*
* sysfs attributes.
*
* Copyright IBM Corp. 2008, 2010
*/
#define KMSG_COMPONENT "zfcp"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/slab.h>
#include "zfcp_ext.h"
#define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
_show, _store)
#define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \
static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
struct device_attribute *at,\
char *buf) \
{ \
struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \
\
return sprintf(buf, _format, _value); \
} \
static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
zfcp_sysfs_##_feat##_##_name##_show, NULL);
#define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value) \
static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
struct device_attribute *at,\
char *buf) \
{ \
return sprintf(buf, _format, _value); \
} \
static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
zfcp_sysfs_##_feat##_##_name##_show, NULL);
#define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \
static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
struct device_attribute *at,\
char *buf) \
{ \
struct ccw_device *cdev = to_ccwdev(dev); \
struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \
int i; \
\
if (!adapter) \
return -ENODEV; \
\
i = sprintf(buf, _format, _value); \
zfcp_ccw_adapter_put(adapter); \
return i; \
} \
static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \
zfcp_sysfs_adapter_##_name##_show, NULL);
ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
(unsigned long long) adapter->peer_wwnn);
ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
(unsigned long long) adapter->peer_wwpn);
ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
atomic_read(&port->status));
ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
(atomic_read(&port->status) &
ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
ZFCP_DEFINE_ATTR_CONST(port, access_denied, "%d\n", 0);
ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
zfcp_unit_sdev_status(unit));
ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
(zfcp_unit_sdev_status(unit) &
ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
(zfcp_unit_sdev_status(unit) &
ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);
static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
return sprintf(buf, "1\n");
return sprintf(buf, "0\n");
}
static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
unsigned long val;
if (kstrtoul(buf, 0, &val) || val != 0)
return -EINVAL;
zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
zfcp_erp_wait(port->adapter);
return count;
}
static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
zfcp_sysfs_port_failed_show,
zfcp_sysfs_port_failed_store);
static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
struct scsi_device *sdev;
unsigned int status, failed = 1;
sdev = zfcp_unit_sdev(unit);
if (sdev) {
status = atomic_read(&sdev_to_zfcp(sdev)->status);
failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
scsi_device_put(sdev);
}
return sprintf(buf, "%d\n", failed);
}
static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
unsigned long val;
struct scsi_device *sdev;
if (kstrtoul(buf, 0, &val) || val != 0)
return -EINVAL;
sdev = zfcp_unit_sdev(unit);
if (sdev) {
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
"syufai2");
zfcp_erp_wait(unit->port->adapter);
} else
zfcp_unit_scsi_scan(unit);
return count;
}
static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
zfcp_sysfs_unit_failed_show,
zfcp_sysfs_unit_failed_store);
static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ccw_device *cdev = to_ccwdev(dev);
struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
int i;
if (!adapter)
return -ENODEV;
if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
i = sprintf(buf, "1\n");
else
i = sprintf(buf, "0\n");
zfcp_ccw_adapter_put(adapter);
return i;
}
static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct ccw_device *cdev = to_ccwdev(dev);
struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
unsigned long val;
int retval = 0;
if (!adapter)
return -ENODEV;
if (kstrtoul(buf, 0, &val) || val != 0) {
retval = -EINVAL;
goto out;
}
zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
"syafai2");
zfcp_erp_wait(adapter);
out:
zfcp_ccw_adapter_put(adapter);
return retval ? retval : (ssize_t) count;
}
static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
zfcp_sysfs_adapter_failed_show,
zfcp_sysfs_adapter_failed_store);
static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct ccw_device *cdev = to_ccwdev(dev);
struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
if (!adapter)
return -ENODEV;
/*
* Users wish is our command: immediately schedule and flush a
* worker to conduct a synchronous port scan, that is, neither
* a random delay nor a rate limit is applied here.
*/
queue_delayed_work(adapter->work_queue, &adapter->scan_work, 0);
flush_delayed_work(&adapter->scan_work);
zfcp_ccw_adapter_put(adapter);
return (ssize_t) count;
}
static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
zfcp_sysfs_port_rescan_store);
DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct ccw_device *cdev = to_ccwdev(dev);
struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
struct zfcp_port *port;
u64 wwpn;
int retval = -EINVAL;
if (!adapter)
return -ENODEV;
if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
goto out;
port = zfcp_get_port_by_wwpn(adapter, wwpn);
if (!port)
goto out;
else
retval = 0;
mutex_lock(&zfcp_sysfs_port_units_mutex);
if (atomic_read(&port->units) > 0) {
retval = -EBUSY;
mutex_unlock(&zfcp_sysfs_port_units_mutex);
goto out;
}
/* port is about to be removed, so no more unit_add */
atomic_set(&port->units, -1);
mutex_unlock(&zfcp_sysfs_port_units_mutex);
write_lock_irq(&adapter->port_list_lock);
list_del(&port->list);
write_unlock_irq(&adapter->port_list_lock);
put_device(&port->dev);
zfcp_erp_port_shutdown(port, 0, "syprs_1");
device_unregister(&port->dev);
out:
zfcp_ccw_adapter_put(adapter);
return retval ? retval : (ssize_t) count;
}
static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
zfcp_sysfs_port_remove_store);
static struct attribute *zfcp_adapter_attrs[] = {
&dev_attr_adapter_failed.attr,
&dev_attr_adapter_in_recovery.attr,
&dev_attr_adapter_port_remove.attr,
&dev_attr_adapter_port_rescan.attr,
&dev_attr_adapter_peer_wwnn.attr,
&dev_attr_adapter_peer_wwpn.attr,
&dev_attr_adapter_peer_d_id.attr,
&dev_attr_adapter_card_version.attr,
&dev_attr_adapter_lic_version.attr,
&dev_attr_adapter_status.attr,
&dev_attr_adapter_hardware_version.attr,
NULL
};
struct attribute_group zfcp_sysfs_adapter_attrs = {
.attrs = zfcp_adapter_attrs,
};
static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
u64 fcp_lun;
int retval;
if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
return -EINVAL;
retval = zfcp_unit_add(port, fcp_lun);
if (retval)
return retval;
return count;
}
static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
u64 fcp_lun;
if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
return -EINVAL;
if (zfcp_unit_remove(port, fcp_lun))
return -EINVAL;
return count;
}
static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
static struct attribute *zfcp_port_attrs[] = {
&dev_attr_unit_add.attr,
&dev_attr_unit_remove.attr,
&dev_attr_port_failed.attr,
&dev_attr_port_in_recovery.attr,
&dev_attr_port_status.attr,
&dev_attr_port_access_denied.attr,
NULL
};
static struct attribute_group zfcp_port_attr_group = {
.attrs = zfcp_port_attrs,
};
const struct attribute_group *zfcp_port_attr_groups[] = {
&zfcp_port_attr_group,
NULL,
};
static struct attribute *zfcp_unit_attrs[] = {
&dev_attr_unit_failed.attr,
&dev_attr_unit_in_recovery.attr,
&dev_attr_unit_status.attr,
&dev_attr_unit_access_denied.attr,
&dev_attr_unit_access_shared.attr,
&dev_attr_unit_access_readonly.attr,
NULL
};
static struct attribute_group zfcp_unit_attr_group = {
.attrs = zfcp_unit_attrs,
};
const struct attribute_group *zfcp_unit_attr_groups[] = {
&zfcp_unit_attr_group,
NULL,
};
#define ZFCP_DEFINE_LATENCY_ATTR(_name) \
static ssize_t \
zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
struct device_attribute *attr, \
char *buf) { \
struct scsi_device *sdev = to_scsi_device(dev); \
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \
unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
\
spin_lock_bh(&lat->lock); \
fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
fmin = lat->_name.fabric.min * adapter->timer_ticks; \
fmax = lat->_name.fabric.max * adapter->timer_ticks; \
csum = lat->_name.channel.sum * adapter->timer_ticks; \
cmin = lat->_name.channel.min * adapter->timer_ticks; \
cmax = lat->_name.channel.max * adapter->timer_ticks; \
cc = lat->_name.counter; \
spin_unlock_bh(&lat->lock); \
\
do_div(fsum, 1000); \
do_div(fmin, 1000); \
do_div(fmax, 1000); \
do_div(csum, 1000); \
do_div(cmin, 1000); \
do_div(cmax, 1000); \
\
return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
fmin, fmax, fsum, cmin, cmax, csum, cc); \
} \
static ssize_t \
zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
struct scsi_device *sdev = to_scsi_device(dev); \
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
unsigned long flags; \
\
spin_lock_irqsave(&lat->lock, flags); \
lat->_name.fabric.sum = 0; \
lat->_name.fabric.min = 0xFFFFFFFF; \
lat->_name.fabric.max = 0; \
lat->_name.channel.sum = 0; \
lat->_name.channel.min = 0xFFFFFFFF; \
lat->_name.channel.max = 0; \
lat->_name.counter = 0; \
spin_unlock_irqrestore(&lat->lock, flags); \
\
return (ssize_t) count; \
} \
static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \
zfcp_sysfs_unit_##_name##_latency_show, \
zfcp_sysfs_unit_##_name##_latency_store);
ZFCP_DEFINE_LATENCY_ATTR(read);
ZFCP_DEFINE_LATENCY_ATTR(write);
ZFCP_DEFINE_LATENCY_ATTR(cmd);
#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
struct device_attribute *attr,\
char *buf) \
{ \
struct scsi_device *sdev = to_scsi_device(dev); \
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
\
return sprintf(buf, _format, _value); \
} \
static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
dev_name(&zfcp_sdev->port->adapter->ccw_device->dev));
ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
(unsigned long long) zfcp_sdev->port->wwpn);
static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct scsi_device *sdev = to_scsi_device(dev);
return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
}
static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
ZFCP_DEFINE_SCSI_ATTR(zfcp_access_denied, "%d\n",
(atomic_read(&zfcp_sdev->status) &
ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
static ssize_t zfcp_sysfs_scsi_zfcp_failed_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct scsi_device *sdev = to_scsi_device(dev);
unsigned int status = atomic_read(&sdev_to_zfcp(sdev)->status);
unsigned int failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
return sprintf(buf, "%d\n", failed);
}
static ssize_t zfcp_sysfs_scsi_zfcp_failed_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct scsi_device *sdev = to_scsi_device(dev);
unsigned long val;
if (kstrtoul(buf, 0, &val) || val != 0)
return -EINVAL;
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
"syufai3");
zfcp_erp_wait(sdev_to_zfcp(sdev)->port->adapter);
return count;
}
static DEVICE_ATTR(zfcp_failed, S_IWUSR | S_IRUGO,
zfcp_sysfs_scsi_zfcp_failed_show,
zfcp_sysfs_scsi_zfcp_failed_store);
ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n",
(atomic_read(&zfcp_sdev->status) &
ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n",
atomic_read(&zfcp_sdev->status));
struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
&dev_attr_fcp_lun,
&dev_attr_wwpn,
&dev_attr_hba_id,
&dev_attr_read_latency,
&dev_attr_write_latency,
&dev_attr_cmd_latency,
&dev_attr_zfcp_access_denied,
&dev_attr_zfcp_failed,
&dev_attr_zfcp_in_recovery,
&dev_attr_zfcp_status,
NULL
};
static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *scsi_host = dev_to_shost(dev);
struct fsf_qtcb_bottom_port *qtcb_port;
struct zfcp_adapter *adapter;
int retval;
adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
return -EOPNOTSUPP;
qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
if (!qtcb_port)
return -ENOMEM;
retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
if (!retval)
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
};
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