mirror of
https://github.com/lwfinger/rtl8188eu.git
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165 lines
3.3 KiB
C
165 lines
3.3 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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*
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******************************************************************************/
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#define _OSDEP_SERVICE_C_
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#include <osdep_service.h>
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#include <osdep_intf.h>
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#include <drv_types.h>
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#include <recv_osdep.h>
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#include <linux/vmalloc.h>
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#include <rtw_ioctl_set.h>
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/*
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* Translate the OS dependent @param error_code to OS independent RTW_STATUS_CODE
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* @return: one of RTW_STATUS_CODE
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*/
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inline int RTW_STATUS_CODE(int error_code)
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{
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if (error_code >= 0)
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return _SUCCESS;
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return _FAIL;
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}
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u8 *_rtw_malloc(u32 sz)
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{
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u8 *pbuf = NULL;
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pbuf = kmalloc(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
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return pbuf;
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}
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void *rtw_malloc2d(int h, int w, int size)
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{
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int j;
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void **a = kzalloc(h*sizeof(void *) + h*w*size, GFP_KERNEL);
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if (a == NULL) {
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pr_info("%s: alloc memory fail!\n", __func__);
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return NULL;
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}
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for (j = 0; j < h; j++)
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a[j] = ((char *)(a+h)) + j*w*size;
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return a;
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}
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u32 _rtw_down_sema(struct semaphore *sema)
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{
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if (down_interruptible(sema))
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return _FAIL;
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else
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return _SUCCESS;
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}
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void _rtw_init_queue(struct __queue *pqueue)
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{
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INIT_LIST_HEAD(&(pqueue->queue));
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spin_lock_init(&(pqueue->lock));
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}
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/* the input parameter start must be in jiffies */
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inline s32 rtw_get_passing_time_ms(u32 start)
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{
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return jiffies_to_msecs(jiffies-start);
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}
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struct net_device *rtw_alloc_etherdev_with_old_priv(int sizeof_priv,
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void *old_priv)
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{
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struct net_device *pnetdev;
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struct rtw_netdev_priv_indicator *pnpi;
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pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4);
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if (!pnetdev)
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goto RETURN;
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pnpi = netdev_priv(pnetdev);
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pnpi->priv = old_priv;
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pnpi->sizeof_priv = sizeof_priv;
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RETURN:
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return pnetdev;
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}
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void rtw_free_netdev(struct net_device *netdev)
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{
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struct rtw_netdev_priv_indicator *pnpi;
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if (!netdev)
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goto RETURN;
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pnpi = netdev_priv(netdev);
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if (!pnpi->priv)
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goto RETURN;
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vfree(pnpi->priv);
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free_netdev(netdev);
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RETURN:
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return;
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}
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u64 rtw_modular64(u64 x, u64 y)
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{
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return do_div(x, y);
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}
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void rtw_buf_free(u8 **buf, u32 *buf_len)
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{
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*buf_len = 0;
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kfree(*buf);
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*buf = NULL;
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}
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void rtw_buf_update(u8 **buf, u32 *buf_len, u8 *src, u32 src_len)
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{
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u32 ori_len = 0, dup_len = 0;
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u8 *ori = NULL;
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u8 *dup = NULL;
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if (!buf || !buf_len)
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return;
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if (!src || !src_len)
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goto keep_ori;
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/* duplicate src */
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dup = rtw_malloc(src_len);
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if (dup) {
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dup_len = src_len;
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memcpy(dup, src, dup_len);
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}
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keep_ori:
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ori = *buf;
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ori_len = *buf_len;
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/* replace buf with dup */
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*buf_len = 0;
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*buf = dup;
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*buf_len = dup_len;
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/* free ori */
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kfree(ori);
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}
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