forked from Minki/linux
553448f6c4
Cleanup the messages used in the zfcp driver: Remove unnecessary debug and trace message and convert the remaining messages to standard kernel macros. Remove the zfcp message macros and while updating the whole flie also update the copyright headers. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
151 lines
4.4 KiB
C
151 lines
4.4 KiB
C
/*
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* zfcp device driver
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*
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* sysfs interface for zfcp unit.
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*
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* Copyright IBM Corporation 2002, 2008
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*/
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#include "zfcp_ext.h"
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/**
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* zfcp_sysfs_unit_release - gets called when a struct device unit is released
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* @dev: pointer to belonging device
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*/
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void
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zfcp_sysfs_unit_release(struct device *dev)
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{
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kfree(dev);
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}
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/**
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* ZFCP_DEFINE_UNIT_ATTR
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* @_name: name of show attribute
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* @_format: format string
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* @_value: value to print
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*
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* Generates attribute for a unit.
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*/
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#define ZFCP_DEFINE_UNIT_ATTR(_name, _format, _value) \
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static ssize_t zfcp_sysfs_unit_##_name##_show(struct device *dev, struct device_attribute *attr, \
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char *buf) \
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{ \
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struct zfcp_unit *unit; \
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\
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unit = dev_get_drvdata(dev); \
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return sprintf(buf, _format, _value); \
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} \
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\
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static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_unit_##_name##_show, NULL);
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ZFCP_DEFINE_UNIT_ATTR(status, "0x%08x\n", atomic_read(&unit->status));
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ZFCP_DEFINE_UNIT_ATTR(in_recovery, "%d\n", atomic_test_mask
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(ZFCP_STATUS_COMMON_ERP_INUSE, &unit->status));
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ZFCP_DEFINE_UNIT_ATTR(access_denied, "%d\n", atomic_test_mask
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(ZFCP_STATUS_COMMON_ACCESS_DENIED, &unit->status));
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ZFCP_DEFINE_UNIT_ATTR(access_shared, "%d\n", atomic_test_mask
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(ZFCP_STATUS_UNIT_SHARED, &unit->status));
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ZFCP_DEFINE_UNIT_ATTR(access_readonly, "%d\n", atomic_test_mask
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(ZFCP_STATUS_UNIT_READONLY, &unit->status));
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/**
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* zfcp_sysfs_unit_failed_store - failed state of unit
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* @dev: pointer to belonging device
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* @buf: pointer to input buffer
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* @count: number of bytes in buffer
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*
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* Store function of the "failed" attribute of a unit.
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* If a "0" gets written to "failed", error recovery will be
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* started for the belonging unit.
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*/
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static ssize_t
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zfcp_sysfs_unit_failed_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
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{
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struct zfcp_unit *unit;
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unsigned int val;
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char *endp;
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int retval = 0;
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down(&zfcp_data.config_sema);
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unit = dev_get_drvdata(dev);
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if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status)) {
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retval = -EBUSY;
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goto out;
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}
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val = simple_strtoul(buf, &endp, 0);
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if (((endp + 1) < (buf + count)) || (val != 0)) {
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retval = -EINVAL;
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goto out;
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}
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zfcp_erp_modify_unit_status(unit, 46, NULL,
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ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
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zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED, 97, NULL);
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zfcp_erp_wait(unit->port->adapter);
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out:
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up(&zfcp_data.config_sema);
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return retval ? retval : (ssize_t) count;
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}
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/**
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* zfcp_sysfs_unit_failed_show - failed state of unit
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* @dev: pointer to belonging device
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* @buf: pointer to input buffer
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*
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* Show function of "failed" attribute of unit. Will be
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* "0" if unit is working, otherwise "1".
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*/
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static ssize_t
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zfcp_sysfs_unit_failed_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct zfcp_unit *unit;
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unit = dev_get_drvdata(dev);
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if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &unit->status))
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return sprintf(buf, "1\n");
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else
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return sprintf(buf, "0\n");
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}
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static DEVICE_ATTR(failed, S_IWUSR | S_IRUGO, zfcp_sysfs_unit_failed_show,
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zfcp_sysfs_unit_failed_store);
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static struct attribute *zfcp_unit_attrs[] = {
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&dev_attr_failed.attr,
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&dev_attr_in_recovery.attr,
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&dev_attr_status.attr,
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&dev_attr_access_denied.attr,
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&dev_attr_access_shared.attr,
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&dev_attr_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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/**
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* zfcp_sysfs_create_unit_files - create sysfs unit files
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* @dev: pointer to belonging device
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*
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* Create all attributes of the sysfs representation of a unit.
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*/
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int
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zfcp_sysfs_unit_create_files(struct device *dev)
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{
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return sysfs_create_group(&dev->kobj, &zfcp_unit_attr_group);
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}
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/**
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* zfcp_sysfs_remove_unit_files - remove sysfs unit files
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* @dev: pointer to belonging device
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*
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* Remove all attributes of the sysfs representation of a unit.
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*/
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void
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zfcp_sysfs_unit_remove_files(struct device *dev)
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{
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sysfs_remove_group(&dev->kobj, &zfcp_unit_attr_group);
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}
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