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/*-
* Copyright (c) 2010 Pawel Jakub Dawidek <pjd@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/jail.h>
#include <sys/kernel.h>
#include <sys/libkern.h>
#include <sys/limits.h>
#include <sys/misc.h>
#include <sys/sunddi.h>
#include <sys/sysctl.h>
int
ddi_strtol(const char *str, char **nptr, int base, long *result)
{
*result = strtol(str, nptr, base);
return (0);
}
int
ddi_strtoul(const char *str, char **nptr, int base, unsigned long *result)
{
if (str == hw_serial) {
*result = prison0.pr_hostid;
return (0);
}
*result = strtoul(str, nptr, base);
return (0);
}
int
ddi_strtoull(const char *str, char **nptr, int base, unsigned long long *result)
{
*result = (unsigned long long)strtouq(str, nptr, base);
return (0);
}
struct ddi_soft_state_item {
int ssi_item;
void *ssi_data;
LIST_ENTRY(ddi_soft_state_item) ssi_next;
};
struct ddi_soft_state {
size_t ss_size;
kmutex_t ss_lock;
LIST_HEAD(, ddi_soft_state_item) ss_list;
};
static void *
ddi_get_soft_state_locked(struct ddi_soft_state *ss, int item)
{
struct ddi_soft_state_item *itemp;
ASSERT(MUTEX_HELD(&ss->ss_lock));
LIST_FOREACH(itemp, &ss->ss_list, ssi_next) {
if (itemp->ssi_item == item)
return (itemp->ssi_data);
}
return (NULL);
}
void *
ddi_get_soft_state(void *state, int item)
{
struct ddi_soft_state *ss = state;
void *data;
mutex_enter(&ss->ss_lock);
data = ddi_get_soft_state_locked(ss, item);
mutex_exit(&ss->ss_lock);
return (data);
}
int
ddi_soft_state_zalloc(void *state, int item)
{
struct ddi_soft_state *ss = state;
struct ddi_soft_state_item *itemp;
itemp = kmem_alloc(sizeof(*itemp), KM_SLEEP);
itemp->ssi_item = item;
itemp->ssi_data = kmem_zalloc(ss->ss_size, KM_SLEEP);
mutex_enter(&ss->ss_lock);
if (ddi_get_soft_state_locked(ss, item) != NULL) {
mutex_exit(&ss->ss_lock);
kmem_free(itemp->ssi_data, ss->ss_size);
kmem_free(itemp, sizeof(*itemp));
return (DDI_FAILURE);
}
LIST_INSERT_HEAD(&ss->ss_list, itemp, ssi_next);
mutex_exit(&ss->ss_lock);
return (DDI_SUCCESS);
}
static void
ddi_soft_state_free_locked(struct ddi_soft_state *ss, int item)
{
struct ddi_soft_state_item *itemp;
ASSERT(MUTEX_HELD(&ss->ss_lock));
LIST_FOREACH(itemp, &ss->ss_list, ssi_next) {
if (itemp->ssi_item == item)
break;
}
if (itemp != NULL) {
LIST_REMOVE(itemp, ssi_next);
kmem_free(itemp->ssi_data, ss->ss_size);
kmem_free(itemp, sizeof(*itemp));
}
}
void
ddi_soft_state_free(void *state, int item)
{
struct ddi_soft_state *ss = state;
mutex_enter(&ss->ss_lock);
ddi_soft_state_free_locked(ss, item);
mutex_exit(&ss->ss_lock);
}
int
ddi_soft_state_init(void **statep, size_t size, size_t nitems __unused)
{
struct ddi_soft_state *ss;
ss = kmem_alloc(sizeof(*ss), KM_SLEEP);
mutex_init(&ss->ss_lock, NULL, MUTEX_DEFAULT, NULL);
ss->ss_size = size;
LIST_INIT(&ss->ss_list);
*statep = ss;
return (0);
}
void
ddi_soft_state_fini(void **statep)
{
struct ddi_soft_state *ss = *statep;
struct ddi_soft_state_item *itemp;
int item;
mutex_enter(&ss->ss_lock);
while ((itemp = LIST_FIRST(&ss->ss_list)) != NULL) {
item = itemp->ssi_item;
ddi_soft_state_free_locked(ss, item);
}
mutex_exit(&ss->ss_lock);
mutex_destroy(&ss->ss_lock);
kmem_free(ss, sizeof(*ss));
*statep = NULL;
}
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