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path: root/drivers/s390/scsi/zfcp_sysfs_port.c
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Diffstat (limited to 'drivers/s390/scsi/zfcp_sysfs_port.c')
-rw-r--r--drivers/s390/scsi/zfcp_sysfs_port.c278
1 files changed, 0 insertions, 278 deletions
diff --git a/drivers/s390/scsi/zfcp_sysfs_port.c b/drivers/s390/scsi/zfcp_sysfs_port.c
deleted file mode 100644
index e183ff8bdb2..00000000000
--- a/drivers/s390/scsi/zfcp_sysfs_port.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/*
- * zfcp device driver
- *
- * sysfs attributes for zfcp port.
- *
- * Copyright IBM Corporation 2002, 2008
- */
-
-#include "zfcp_ext.h"
-
-/**
- * zfcp_sysfs_port_release - gets called when a struct device port is released
- * @dev: pointer to belonging device
- */
-void
-zfcp_sysfs_port_release(struct device *dev)
-{
- kfree(dev);
-}
-
-/**
- * ZFCP_DEFINE_PORT_ATTR
- * @_name: name of show attribute
- * @_format: format string
- * @_value: value to print
- *
- * Generates attributes for a port.
- */
-#define ZFCP_DEFINE_PORT_ATTR(_name, _format, _value) \
-static ssize_t zfcp_sysfs_port_##_name##_show(struct device *dev, struct device_attribute *attr, \
- char *buf) \
-{ \
- struct zfcp_port *port; \
- \
- port = dev_get_drvdata(dev); \
- return sprintf(buf, _format, _value); \
-} \
- \
-static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_port_##_name##_show, NULL);
-
-ZFCP_DEFINE_PORT_ATTR(status, "0x%08x\n", atomic_read(&port->status));
-ZFCP_DEFINE_PORT_ATTR(in_recovery, "%d\n", atomic_test_mask
- (ZFCP_STATUS_COMMON_ERP_INUSE, &port->status));
-ZFCP_DEFINE_PORT_ATTR(access_denied, "%d\n", atomic_test_mask
- (ZFCP_STATUS_COMMON_ACCESS_DENIED, &port->status));
-
-/**
- * zfcp_sysfs_unit_add_store - add a unit to sysfs tree
- * @dev: pointer to belonging device
- * @buf: pointer to input buffer
- * @count: number of bytes in buffer
- *
- * Store function of the "unit_add" attribute of a port.
- */
-static ssize_t
-zfcp_sysfs_unit_add_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
-{
- fcp_lun_t fcp_lun;
- char *endp;
- struct zfcp_port *port;
- struct zfcp_unit *unit;
- int retval = -EINVAL;
-
- down(&zfcp_data.config_sema);
-
- port = dev_get_drvdata(dev);
- if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status)) {
- retval = -EBUSY;
- goto out;
- }
-
- fcp_lun = simple_strtoull(buf, &endp, 0);
- if ((endp + 1) < (buf + count))
- goto out;
-
- unit = zfcp_unit_enqueue(port, fcp_lun);
- if (IS_ERR(unit))
- goto out;
-
- retval = 0;
-
- zfcp_erp_unit_reopen(unit, 0, 94, NULL);
- zfcp_erp_wait(unit->port->adapter);
- zfcp_unit_put(unit);
- out:
- up(&zfcp_data.config_sema);
- return retval ? retval : (ssize_t) count;
-}
-
-static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
-
-/**
- * zfcp_sysfs_unit_remove_store - remove a unit from sysfs tree
- * @dev: pointer to belonging device
- * @buf: pointer to input buffer
- * @count: number of bytes in buffer
- */
-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;
- struct zfcp_unit *unit;
- fcp_lun_t fcp_lun;
- char *endp;
- int retval = 0;
-
- down(&zfcp_data.config_sema);
-
- port = dev_get_drvdata(dev);
- if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status)) {
- retval = -EBUSY;
- goto out;
- }
-
- fcp_lun = simple_strtoull(buf, &endp, 0);
- if ((endp + 1) < (buf + count)) {
- retval = -EINVAL;
- goto out;
- }
-
- write_lock_irq(&zfcp_data.config_lock);
- unit = zfcp_get_unit_by_lun(port, fcp_lun);
- if (unit && (atomic_read(&unit->refcount) == 0)) {
- zfcp_unit_get(unit);
- atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status);
- list_move(&unit->list, &port->unit_remove_lh);
- }
- else {
- unit = NULL;
- }
- write_unlock_irq(&zfcp_data.config_lock);
-
- if (!unit) {
- retval = -ENXIO;
- goto out;
- }
-
- zfcp_erp_unit_shutdown(unit, 0, 95, NULL);
- zfcp_erp_wait(unit->port->adapter);
- zfcp_unit_put(unit);
- zfcp_unit_dequeue(unit);
- out:
- up(&zfcp_data.config_sema);
- return retval ? retval : (ssize_t) count;
-}
-
-static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
-
-/**
- * zfcp_sysfs_port_failed_store - failed state of port
- * @dev: pointer to belonging device
- * @buf: pointer to input buffer
- * @count: number of bytes in buffer
- *
- * Store function of the "failed" attribute of a port.
- * If a "0" gets written to "failed", error recovery will be
- * started for the belonging port.
- */
-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;
- unsigned int val;
- char *endp;
- int retval = 0;
-
- down(&zfcp_data.config_sema);
-
- port = dev_get_drvdata(dev);
- if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status)) {
- retval = -EBUSY;
- goto out;
- }
-
- val = simple_strtoul(buf, &endp, 0);
- if (((endp + 1) < (buf + count)) || (val != 0)) {
- retval = -EINVAL;
- goto out;
- }
-
- zfcp_erp_modify_port_status(port, 45, NULL,
- ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
- zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, 96, NULL);
- zfcp_erp_wait(port->adapter);
- out:
- up(&zfcp_data.config_sema);
- return retval ? retval : (ssize_t) count;
-}
-
-/**
- * zfcp_sysfs_port_failed_show - failed state of port
- * @dev: pointer to belonging device
- * @buf: pointer to input buffer
- *
- * Show function of "failed" attribute of port. Will be
- * "0" if port is working, otherwise "1".
- */
-static ssize_t
-zfcp_sysfs_port_failed_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct zfcp_port *port;
-
- port = dev_get_drvdata(dev);
- if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &port->status))
- return sprintf(buf, "1\n");
- else
- return sprintf(buf, "0\n");
-}
-
-static DEVICE_ATTR(failed, S_IWUSR | S_IRUGO, zfcp_sysfs_port_failed_show,
- zfcp_sysfs_port_failed_store);
-
-/**
- * zfcp_port_common_attrs
- * sysfs attributes that are common for all kind of fc ports.
- */
-static struct attribute *zfcp_port_common_attrs[] = {
- &dev_attr_failed.attr,
- &dev_attr_in_recovery.attr,
- &dev_attr_status.attr,
- &dev_attr_access_denied.attr,
- NULL
-};
-
-static struct attribute_group zfcp_port_common_attr_group = {
- .attrs = zfcp_port_common_attrs,
-};
-
-/**
- * zfcp_port_no_ns_attrs
- * sysfs attributes not to be used for nameserver ports.
- */
-static struct attribute *zfcp_port_no_ns_attrs[] = {
- &dev_attr_unit_add.attr,
- &dev_attr_unit_remove.attr,
- NULL
-};
-
-static struct attribute_group zfcp_port_no_ns_attr_group = {
- .attrs = zfcp_port_no_ns_attrs,
-};
-
-/**
- * zfcp_sysfs_port_create_files - create sysfs port files
- * @dev: pointer to belonging device
- *
- * Create all attributes of the sysfs representation of a port.
- */
-int
-zfcp_sysfs_port_create_files(struct device *dev, u32 flags)
-{
- int retval;
-
- retval = sysfs_create_group(&dev->kobj, &zfcp_port_common_attr_group);
-
- if ((flags & ZFCP_STATUS_PORT_WKA) || retval)
- return retval;
-
- retval = sysfs_create_group(&dev->kobj, &zfcp_port_no_ns_attr_group);
- if (retval)
- sysfs_remove_group(&dev->kobj, &zfcp_port_common_attr_group);
-
- return retval;
-}
-
-/**
- * zfcp_sysfs_port_remove_files - remove sysfs port files
- * @dev: pointer to belonging device
- *
- * Remove all attributes of the sysfs representation of a port.
- */
-void
-zfcp_sysfs_port_remove_files(struct device *dev, u32 flags)
-{
- sysfs_remove_group(&dev->kobj, &zfcp_port_common_attr_group);
- if (!(flags & ZFCP_STATUS_PORT_WKA))
- sysfs_remove_group(&dev->kobj, &zfcp_port_no_ns_attr_group);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 02:42:33 +0000