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/******************************************************************************
*
* Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
******************************************************************************/
#define _OSDEP_SERVICE_C_
#include <osdep_service.h>
#include <osdep_intf.h>
#include <drv_types.h>
#include <recv_osdep.h>
#include <linux/vmalloc.h>
#include <rtw_ioctl_set.h>
/*
* Translate the OS dependent @param error_code to OS independent RTW_STATUS_CODE
* @return: one of RTW_STATUS_CODE
*/
inline int RTW_STATUS_CODE(int error_code)
{
if (error_code >= 0)
return _SUCCESS;
return _FAIL;
}
u8 *_rtw_malloc(u32 sz)
{
return kmalloc(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
}
void *rtw_malloc2d(int h, int w, int size)
{
int j;
void **a = kzalloc(h*sizeof(void *) + h*w*size, GFP_KERNEL);
if (!a) {
pr_info("%s: alloc memory fail!\n", __func__);
return NULL;
}
for (j = 0; j < h; j++)
a[j] = ((char *)(a+h)) + j*w*size;
return a;
}
u32 _rtw_down_sema(struct semaphore *sema)
{
if (down_interruptible(sema))
return _FAIL;
return _SUCCESS;
}
void _rtw_init_queue(struct __queue *pqueue)
{
INIT_LIST_HEAD(&(pqueue->queue));
spin_lock_init(&(pqueue->lock));
}
struct net_device *rtw_alloc_etherdev_with_old_priv(int sizeof_priv,
void *old_priv)
{
struct net_device *pnetdev;
struct rtw_netdev_priv_indicator *pnpi;
pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4);
if (!pnetdev)
goto RETURN;
pnpi = netdev_priv(pnetdev);
pnpi->priv = old_priv;
pnpi->sizeof_priv = sizeof_priv;
RETURN:
return pnetdev;
}
void rtw_free_netdev(struct net_device *netdev)
{
struct rtw_netdev_priv_indicator *pnpi;
if (!netdev)
goto RETURN;
pnpi = netdev_priv(netdev);
if (!pnpi->priv)
goto RETURN;
vfree(pnpi->priv);
free_netdev(netdev);
RETURN:
return;
}
u64 rtw_modular64(u64 x, u64 y)
{
return do_div(x, y);
}
void rtw_buf_free(u8 **buf, u32 *buf_len)
{
*buf_len = 0;
kfree(*buf);
*buf = NULL;
}
void rtw_buf_update(u8 **buf, u32 *buf_len, u8 *src, u32 src_len)
{
u32 dup_len = 0;
u8 *ori = NULL;
u8 *dup = NULL;
if (!buf || !buf_len)
return;
if (!src || !src_len)
goto keep_ori;
/* duplicate src */
dup = rtw_malloc(src_len);
if (dup) {
dup_len = src_len;
memcpy(dup, src, dup_len);
}
keep_ori:
ori = *buf;
/* replace buf with dup */
*buf_len = 0;
*buf = dup;
*buf_len = dup_len;
/* free ori */
kfree(ori);
}
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