mirror of
https://git.rtems.org/rtems-libbsd/
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Import DPAA driver snapshot
Imported from Freescale Linux repository git://git.freescale.com/ppc/upstream/linux.git commit 2774c204cd8bfc56a200ff4dcdfc9cdf5b6fc161. Linux compatibility layer is partly from FreeBSD.
This commit is contained in:
Sebastian Huber
194
rtemsbsd/powerpc/include/linux/sysfs.h
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194
rtemsbsd/powerpc/include/linux/sysfs.h
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@@ -0,0 +1,194 @@
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/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LINUX_SYSFS_H_
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#define _LINUX_SYSFS_H_
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#if 0
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#include <sys/sysctl.h>
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struct attribute {
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const char *name;
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struct module *owner;
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mode_t mode;
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};
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struct sysfs_ops {
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ssize_t (*show)(struct kobject *, struct attribute *, char *);
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ssize_t (*store)(struct kobject *, struct attribute *, const char *,
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size_t);
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};
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struct attribute_group {
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const char *name;
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mode_t (*is_visible)(struct kobject *,
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struct attribute *, int);
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struct attribute **attrs;
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};
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#define __ATTR(_name, _mode, _show, _store) { \
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.attr = { .name = __stringify(_name), .mode = _mode }, \
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.show = _show, .store = _store, \
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}
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#define __ATTR_RO(_name) { \
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.attr = { .name = __stringify(_name), .mode = 0444 }, \
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.show = _name##_show, \
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}
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#define __ATTR_NULL { .attr = { .name = NULL } }
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/*
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* Handle our generic '\0' terminated 'C' string.
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* Two cases:
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* a variable string: point arg1 at it, arg2 is max length.
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* a constant string: point arg1 at it, arg2 is zero.
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*/
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static inline int
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sysctl_handle_attr(SYSCTL_HANDLER_ARGS)
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{
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struct kobject *kobj;
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struct attribute *attr;
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const struct sysfs_ops *ops;
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char *buf;
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int error;
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ssize_t len;
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kobj = arg1;
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attr = (struct attribute *)arg2;
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if (kobj->ktype == NULL || kobj->ktype->sysfs_ops == NULL)
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return (ENODEV);
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buf = (char *)get_zeroed_page(GFP_KERNEL);
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if (buf == NULL)
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return (ENOMEM);
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ops = kobj->ktype->sysfs_ops;
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if (ops->show) {
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len = ops->show(kobj, attr, buf);
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/*
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* It's valid to not have a 'show' so just return an
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* empty string.
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*/
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if (len < 0) {
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error = -len;
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if (error != EIO)
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goto out;
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buf[0] = '\0';
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} else if (len) {
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len--;
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if (len >= PAGE_SIZE)
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len = PAGE_SIZE - 1;
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/* Trim trailing newline. */
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buf[len] = '\0';
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}
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}
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/* Leave one trailing byte to append a newline. */
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error = sysctl_handle_string(oidp, buf, PAGE_SIZE - 1, req);
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if (error != 0 || req->newptr == NULL || ops->store == NULL)
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goto out;
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len = strlcat(buf, "\n", PAGE_SIZE);
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KASSERT(len < PAGE_SIZE, ("new attribute truncated"));
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len = ops->store(kobj, attr, buf, len);
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if (len < 0)
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error = -len;
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out:
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free_page((unsigned long)buf);
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return (error);
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}
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static inline int
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sysfs_create_file(struct kobject *kobj, const struct attribute *attr)
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{
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sysctl_add_oid(NULL, SYSCTL_CHILDREN(kobj->oidp), OID_AUTO,
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attr->name, CTLTYPE_STRING|CTLFLAG_RW|CTLFLAG_MPSAFE, kobj,
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(uintptr_t)attr, sysctl_handle_attr, "A", "");
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return (0);
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}
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static inline void
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sysfs_remove_file(struct kobject *kobj, const struct attribute *attr)
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{
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if (kobj->oidp)
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sysctl_remove_name(kobj->oidp, attr->name, 1, 1);
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}
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static inline void
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sysfs_remove_group(struct kobject *kobj, const struct attribute_group *grp)
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{
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if (kobj->oidp)
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sysctl_remove_name(kobj->oidp, grp->name, 1, 1);
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}
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static inline int
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sysfs_create_group(struct kobject *kobj, const struct attribute_group *grp)
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{
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struct attribute **attr;
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struct sysctl_oid *oidp;
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oidp = SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(kobj->oidp),
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OID_AUTO, grp->name, CTLFLAG_RD|CTLFLAG_MPSAFE, NULL, grp->name);
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for (attr = grp->attrs; *attr != NULL; attr++) {
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sysctl_add_oid(NULL, SYSCTL_CHILDREN(oidp), OID_AUTO,
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(*attr)->name, CTLTYPE_STRING|CTLFLAG_RW|CTLFLAG_MPSAFE,
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kobj, (uintptr_t)*attr, sysctl_handle_attr, "A", "");
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}
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return (0);
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}
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static inline int
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sysfs_create_dir(struct kobject *kobj)
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{
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kobj->oidp = SYSCTL_ADD_NODE(NULL, SYSCTL_CHILDREN(kobj->parent->oidp),
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OID_AUTO, kobj->name, CTLFLAG_RD|CTLFLAG_MPSAFE, NULL, kobj->name);
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return (0);
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}
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static inline void
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sysfs_remove_dir(struct kobject *kobj)
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{
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if (kobj->oidp == NULL)
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return;
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sysctl_remove_oid(kobj->oidp, 1, 1);
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}
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#define sysfs_attr_init(attr) do {} while(0)
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#endif
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#endif /* _LINUX_SYSFS_H_ */
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