// SPDX-License-Identifier: GPL-2.0+
/*
* Interface for Dynamic Logical Partitioning of I / O Slots on
* RPA - compliant PPC64 platform .
*
* John Rose < johnrose @ austin . ibm . com >
* October 2003
*
* Copyright ( C ) 2003 IBM .
*/
#include <linux/kobject.h>
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/pci_hotplug.h>
#include "rpaphp.h"
#include "rpadlpar.h"
#include "../pci.h"
#define DLPAR_KOBJ_NAME "control"
/* Those two have no quotes because they are passed to __ATTR() which
* stringifies the argument ( yuck ! )
*/
#define ADD_SLOT_ATTR_NAME add_slot
#define REMOVE_SLOT_ATTR_NAME remove_slot
static ssize_t add_slot_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t nbytes)
{
char drc_name[MAX_DRC_NAME_LEN];
char *end;
int rc;
if (nbytes >= MAX_DRC_NAME_LEN)
return 0 ;
strscpy(drc_name, buf, nbytes + 1 );
end = strchr(drc_name, '\n' );
if (end)
*end = '\0' ;
rc = dlpar_add_slot(drc_name);
if (rc)
return rc;
return nbytes;
}
static ssize_t add_slot_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return sysfs_emit(buf, "0\n" );
}
static ssize_t remove_slot_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t nbytes)
{
char drc_name[MAX_DRC_NAME_LEN];
int rc;
char *end;
if (nbytes >= MAX_DRC_NAME_LEN)
return 0 ;
strscpy(drc_name, buf, nbytes + 1 );
end = strchr(drc_name, '\n' );
if (end)
*end = '\0' ;
rc = dlpar_remove_slot(drc_name);
if (rc)
return rc;
return nbytes;
}
static ssize_t remove_slot_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return sysfs_emit(buf, "0\n" );
}
static struct kobj_attribute add_slot_attr =
__ATTR(ADD_SLOT_ATTR_NAME, 0644 , add_slot_show, add_slot_store);
static struct kobj_attribute remove_slot_attr =
__ATTR(REMOVE_SLOT_ATTR_NAME, 0644 , remove_slot_show, remove_slot_store);
static struct attribute *default_attrs[] = {
&add_slot_attr.attr,
&remove_slot_attr.attr,
NULL,
};
static const struct attribute_group dlpar_attr_group = {
.attrs = default_attrs,
};
static struct kobject *dlpar_kobj;
int dlpar_sysfs_init(void )
{
int error;
dlpar_kobj = kobject_create_and_add(DLPAR_KOBJ_NAME,
&pci_slots_kset->kobj);
if (!dlpar_kobj)
return -EINVAL;
error = sysfs_create_group(dlpar_kobj, &dlpar_attr_group);
if (error)
kobject_put(dlpar_kobj);
return error;
}
void dlpar_sysfs_exit(void )
{
sysfs_remove_group(dlpar_kobj, &dlpar_attr_group);
kobject_put(dlpar_kobj);
}
Messung V0.5 in Prozent C=98 H=100 G=98
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-09-28)
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