[deliverable/linux.git] / drivers / staging / rtl8188eu / os_dep / osdep_service.c

/******************************************************************************
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 *
 ******************************************************************************/


#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)
{
	u8	*pbuf = NULL;

	pbuf = kmalloc(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
	return pbuf;
}

void *rtw_malloc2d(int h, int w, int size)
{
	int j;

	void **a = (void **)kzalloc(h*sizeof(void *) + h*w*size, GFP_KERNEL);
	if (a == NULL) {
		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;
	else
		return _SUCCESS;
}

void	_rtw_init_queue(struct __queue *pqueue)
{
	INIT_LIST_HEAD(&(pqueue->queue));
	spin_lock_init(&(pqueue->lock));
}

u32	  _rtw_queue_empty(struct __queue *pqueue)
{
	return list_empty(&(pqueue->queue));
}

inline u32 rtw_systime_to_ms(u32 systime)
{
	return systime * 1000 / HZ;
}

inline u32 rtw_ms_to_systime(u32 ms)
{
	return ms * HZ / 1000;
}

/*  the input parameter start must be in jiffies */
inline s32 rtw_get_passing_time_ms(u32 start)
{
	return rtw_systime_to_ms(jiffies-start);
}

inline s32 rtw_get_time_interval_ms(u32 start, u32 end)
{
	return rtw_systime_to_ms(end-start);
}

#define RTW_SUSPEND_LOCK_NAME "rtw_wifi"

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;
}

struct net_device *rtw_alloc_etherdev(int sizeof_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 = vzalloc(sizeof_priv);
	if (!pnpi->priv) {
		free_netdev(pnetdev);
		pnetdev = NULL;
		goto RETURN;
	}

	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;
}

int rtw_change_ifname(struct adapter *padapter, const char *ifname)
{
	struct net_device *pnetdev;
	struct net_device *cur_pnetdev;
	struct rereg_nd_name_data *rereg_priv;
	int ret;

	if (!padapter)
		goto error;

	cur_pnetdev = padapter->pnetdev;
	rereg_priv = &padapter->rereg_nd_name_priv;

	/* free the old_pnetdev */
	if (rereg_priv->old_pnetdev) {
		free_netdev(rereg_priv->old_pnetdev);
		rereg_priv->old_pnetdev = NULL;
	}

	if (!rtnl_is_locked())
		unregister_netdev(cur_pnetdev);
	else
		unregister_netdevice(cur_pnetdev);

	rtw_proc_remove_one(cur_pnetdev);

	rereg_priv->old_pnetdev = cur_pnetdev;

	pnetdev = rtw_init_netdev(padapter);
	if (!pnetdev)  {
		ret = -1;
		goto error;
	}

	SET_NETDEV_DEV(pnetdev, dvobj_to_dev(adapter_to_dvobj(padapter)));

	rtw_init_netdev_name(pnetdev, ifname);

	memcpy(pnetdev->dev_addr, padapter->eeprompriv.mac_addr, ETH_ALEN);

	if (!rtnl_is_locked())
		ret = register_netdev(pnetdev);
	else
		ret = register_netdevice(pnetdev);
	if (ret != 0) {
		RT_TRACE(_module_hci_intfs_c_, _drv_err_,
			 ("register_netdev() failed\n"));
		goto error;
	}
	rtw_proc_init_one(pnetdev);
	return 0;
error:
	return -1;
}

u64 rtw_modular64(u64 x, u64 y)
{
	return do_div(x, y);
}

u64 rtw_division64(u64 x, u64 y)
{
	do_div(x, y);
	return x;
}

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 ori_len = 0, 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;
	ori_len = *buf_len;

	/* replace buf with dup */
	*buf_len = 0;
	*buf = dup;
	*buf_len = dup_len;

	/* free ori */
	kfree(ori);
}


/**
 * rtw_cbuf_full - test if cbuf is full
 * @cbuf: pointer of struct rtw_cbuf
 *
 * Returns: true if cbuf is full
 */
inline bool rtw_cbuf_full(struct rtw_cbuf *cbuf)
{
	return (cbuf->write == cbuf->read-1) ? true : false;
}

/**
 * rtw_cbuf_empty - test if cbuf is empty
 * @cbuf: pointer of struct rtw_cbuf
 *
 * Returns: true if cbuf is empty
 */
inline bool rtw_cbuf_empty(struct rtw_cbuf *cbuf)
{
	return (cbuf->write == cbuf->read) ? true : false;
}

/**
 * rtw_cbuf_push - push a pointer into cbuf
 * @cbuf: pointer of struct rtw_cbuf
 * @buf: pointer to push in
 *
 * Lock free operation, be careful of the use scheme
 * Returns: true push success
 */
bool rtw_cbuf_push(struct rtw_cbuf *cbuf, void *buf)
{
	if (rtw_cbuf_full(cbuf))
		return _FAIL;

	if (0)
		DBG_88E("%s on %u\n", __func__, cbuf->write);
	cbuf->bufs[cbuf->write] = buf;
	cbuf->write = (cbuf->write+1)%cbuf->size;

	return _SUCCESS;
}

/**
 * rtw_cbuf_pop - pop a pointer from cbuf
 * @cbuf: pointer of struct rtw_cbuf
 *
 * Lock free operation, be careful of the use scheme
 * Returns: pointer popped out
 */
void *rtw_cbuf_pop(struct rtw_cbuf *cbuf)
{
	void *buf;
	if (rtw_cbuf_empty(cbuf))
		return NULL;

	if (0)
		DBG_88E("%s on %u\n", __func__, cbuf->read);
	buf = cbuf->bufs[cbuf->read];
	cbuf->read = (cbuf->read+1)%cbuf->size;

	return buf;
}

/**
 * rtw_cbuf_alloc - allocate a rtw_cbuf with given size and do initialization
 * @size: size of pointer
 *
 * Returns: pointer of srtuct rtw_cbuf, NULL for allocation failure
 */
struct rtw_cbuf *rtw_cbuf_alloc(u32 size)
{
	struct rtw_cbuf *cbuf;

	cbuf = (struct rtw_cbuf *)rtw_malloc(sizeof(*cbuf) +
	       sizeof(void *)*size);

	if (cbuf) {
		cbuf->write = 0;
		cbuf->read = 0;
		cbuf->size = size;
	}
	return cbuf;
}
Commit	Line	Data
a2c60d42 LF	1	/******************************************************************************
	2	*
	3	* Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms of version 2 of the GNU General Public License as
	7	* published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	* more details.
	13	*
	14	* You should have received a copy of the GNU General Public License along with
	15	* this program; if not, write to the Free Software Foundation, Inc.,
	16	* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
	17	*
	18	*
	19	******************************************************************************/
	20
	21
	22	#define _OSDEP_SERVICE_C_
	23
	24	#include <osdep_service.h>
0a95a7f4	25	#include <osdep_intf.h>
a2c60d42 LF	26	#include <drv_types.h>
	27	#include <recv_osdep.h>
	28	#include <linux/vmalloc.h>
	29	#include <rtw_ioctl_set.h>
	30
	31	/*
	32	* Translate the OS dependent @param error_code to OS independent RTW_STATUS_CODE
	33	* @return: one of RTW_STATUS_CODE
	34	*/
	35	inline int RTW_STATUS_CODE(int error_code)
	36	{
	37	if (error_code >= 0)
	38	return _SUCCESS;
	39	return _FAIL;
	40	}
	41
a2c60d42 LF	42	u8 *_rtw_malloc(u32 sz)
	43	{
	44	u8 *pbuf = NULL;
	45
	46	pbuf = kmalloc(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
	47	return pbuf;
	48	}
	49
a2c60d42 LF	50	void *rtw_malloc2d(int h, int w, int size)
	51	{
	52	int j;
	53
fadbe0cd	54	void a = (void )kzalloc(hsizeof(void ) + hwsize, GFP_KERNEL);
a2c60d42 LF	55	if (a == NULL) {
	56	pr_info("%s: alloc memory fail!\n", __func__);
	57	return NULL;
	58	}
	59
	60	for (j = 0; j < h; j++)
	61	a[j] = ((char )(a+h)) + jw*size;
	62
	63	return a;
	64	}
	65
a2c60d42 LF	66	u32 _rtw_down_sema(struct semaphore *sema)
	67	{
	68	if (down_interruptible(sema))
	69	return _FAIL;
	70	else
	71	return _SUCCESS;
	72	}
	73
a2c60d42 LF	74	void _rtw_init_queue(struct __queue *pqueue)
a2c60d42 LF	75	{
aa3f5ccb	76	INIT_LIST_HEAD(&(pqueue->queue));
f214e521	77	spin_lock_init(&(pqueue->lock));
a2c60d42 LF	78	}
	79
	80	u32 _rtw_queue_empty(struct __queue *pqueue)
	81	{
9c4b0e70	82	return list_empty(&(pqueue->queue));
a2c60d42 LF	83	}
a2c60d42 LF	84
a2c60d42 LF	85	inline u32 rtw_systime_to_ms(u32 systime)
	86	{
	87	return systime * 1000 / HZ;
	88	}
	89
	90	inline u32 rtw_ms_to_systime(u32 ms)
	91	{
	92	return ms * HZ / 1000;
	93	}
	94
c01fb496	95	/* the input parameter start must be in jiffies */
a2c60d42 LF	96	inline s32 rtw_get_passing_time_ms(u32 start)
	97	{
	98	return rtw_systime_to_ms(jiffies-start);
	99	}
	100
	101	inline s32 rtw_get_time_interval_ms(u32 start, u32 end)
	102	{
	103	return rtw_systime_to_ms(end-start);
	104	}
	105
a2c60d42 LF	106	#define RTW_SUSPEND_LOCK_NAME "rtw_wifi"
a2c60d42 LF	107
a2c60d42 LF	108	struct net_device *rtw_alloc_etherdev_with_old_priv(int sizeof_priv,
	109	void *old_priv)
	110	{
	111	struct net_device *pnetdev;
	112	struct rtw_netdev_priv_indicator *pnpi;
	113
	114	pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4);
	115	if (!pnetdev)
	116	goto RETURN;
	117
	118	pnpi = netdev_priv(pnetdev);
	119	pnpi->priv = old_priv;
	120	pnpi->sizeof_priv = sizeof_priv;
	121
	122	RETURN:
	123	return pnetdev;
	124	}
	125
	126	struct net_device *rtw_alloc_etherdev(int sizeof_priv)
	127	{
	128	struct net_device *pnetdev;
	129	struct rtw_netdev_priv_indicator *pnpi;
	130
	131	pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4);
	132	if (!pnetdev)
	133	goto RETURN;
	134
	135	pnpi = netdev_priv(pnetdev);
	136
2397c6e0	137	pnpi->priv = vzalloc(sizeof_priv);
a2c60d42 LF	138	if (!pnpi->priv) {
	139	free_netdev(pnetdev);
	140	pnetdev = NULL;
	141	goto RETURN;
	142	}
	143
	144	pnpi->sizeof_priv = sizeof_priv;
	145	RETURN:
	146	return pnetdev;
	147	}
	148
	149	void rtw_free_netdev(struct net_device *netdev)
	150	{
	151	struct rtw_netdev_priv_indicator *pnpi;
	152
	153	if (!netdev)
	154	goto RETURN;
	155
	156	pnpi = netdev_priv(netdev);
	157
	158	if (!pnpi->priv)
	159	goto RETURN;
	160
03bd6aea	161	vfree(pnpi->priv);
a2c60d42 LF	162	free_netdev(netdev);
	163
	164	RETURN:
	165	return;
	166	}
	167
	168	int rtw_change_ifname(struct adapter padapter, const char ifname)
	169	{
	170	struct net_device *pnetdev;
efbff73e	171	struct net_device *cur_pnetdev;
a2c60d42 LF	172	struct rereg_nd_name_data *rereg_priv;
	173	int ret;
	174
	175	if (!padapter)
	176	goto error;
	177
efbff73e	178	cur_pnetdev = padapter->pnetdev;
a2c60d42 LF	179	rereg_priv = &padapter->rereg_nd_name_priv;
	180
	181	/* free the old_pnetdev */
	182	if (rereg_priv->old_pnetdev) {
	183	free_netdev(rereg_priv->old_pnetdev);
	184	rereg_priv->old_pnetdev = NULL;
	185	}
	186
	187	if (!rtnl_is_locked())
	188	unregister_netdev(cur_pnetdev);
	189	else
	190	unregister_netdevice(cur_pnetdev);
	191
	192	rtw_proc_remove_one(cur_pnetdev);
	193
	194	rereg_priv->old_pnetdev = cur_pnetdev;
	195
	196	pnetdev = rtw_init_netdev(padapter);
	197	if (!pnetdev) {
	198	ret = -1;
	199	goto error;
	200	}
	201
	202	SET_NETDEV_DEV(pnetdev, dvobj_to_dev(adapter_to_dvobj(padapter)));
	203
	204	rtw_init_netdev_name(pnetdev, ifname);
	205
	206	memcpy(pnetdev->dev_addr, padapter->eeprompriv.mac_addr, ETH_ALEN);
	207
	208	if (!rtnl_is_locked())
	209	ret = register_netdev(pnetdev);
	210	else
	211	ret = register_netdevice(pnetdev);
	212	if (ret != 0) {
	213	RT_TRACE(_module_hci_intfs_c_, _drv_err_,
	214	("register_netdev() failed\n"));
	215	goto error;
	216	}
	217	rtw_proc_init_one(pnetdev);
	218	return 0;
	219	error:
	220	return -1;
	221	}
	222
	223	u64 rtw_modular64(u64 x, u64 y)
	224	{
	225	return do_div(x, y);
	226	}
	227
	228	u64 rtw_division64(u64 x, u64 y)
	229	{
	230	do_div(x, y);
	231	return x;
	232	}
	233
	234	void rtw_buf_free(u8 *buf, u32 buf_len)
	235	{
	236	*buf_len = 0;
	237	kfree(*buf);
	238	*buf = NULL;
	239	}
	240
	241	void rtw_buf_update(u8 *buf, u32 buf_len, u8 *src, u32 src_len)
	242	{
243	u32 ori_len = 0, dup_len = 0;
244	u8 *ori = NULL;
245	u8 *dup = NULL;
246
247	if (!buf \|\| !buf_len)
248	return;
249
250	if (!src \|\| !src_len)
251	goto keep_ori;
252
253	/* duplicate src */
254	dup = rtw_malloc(src_len);
255	if (dup) {
256	dup_len = src_len;
257	memcpy(dup, src, dup_len);
258	}
259
260	keep_ori:
261	ori = *buf;
262	ori_len = *buf_len;
263
264	/* replace buf with dup */
265	*buf_len = 0;
266	*buf = dup;
267	*buf_len = dup_len;
268
269	/* free ori */
270	kfree(ori);
271	}
272
273
274	/**
275	* rtw_cbuf_full - test if cbuf is full
276	* @cbuf: pointer of struct rtw_cbuf
277	*
278	* Returns: true if cbuf is full
279	*/
280	inline bool rtw_cbuf_full(struct rtw_cbuf *cbuf)
281	{
282	return (cbuf->write == cbuf->read-1) ? true : false;
283	}
284
285	/**
286	* rtw_cbuf_empty - test if cbuf is empty
287	* @cbuf: pointer of struct rtw_cbuf
288	*
289	* Returns: true if cbuf is empty
290	*/
291	inline bool rtw_cbuf_empty(struct rtw_cbuf *cbuf)
292	{
293	return (cbuf->write == cbuf->read) ? true : false;
294	}
295
296	/**
297	* rtw_cbuf_push - push a pointer into cbuf
298	* @cbuf: pointer of struct rtw_cbuf
299	* @buf: pointer to push in
300	*
301	* Lock free operation, be careful of the use scheme
302	* Returns: true push success
303	*/
304	bool rtw_cbuf_push(struct rtw_cbuf cbuf, void buf)
305	{
306	if (rtw_cbuf_full(cbuf))
307	return _FAIL;
308
309	if (0)
310	DBG_88E("%s on %u\n", __func__, cbuf->write);
311	cbuf->bufs[cbuf->write] = buf;
312	cbuf->write = (cbuf->write+1)%cbuf->size;
313
314	return _SUCCESS;
315	}
316
317	/**
318	* rtw_cbuf_pop - pop a pointer from cbuf
319	* @cbuf: pointer of struct rtw_cbuf
320	*
321	* Lock free operation, be careful of the use scheme
322	* Returns: pointer popped out
323	*/
324	void rtw_cbuf_pop(struct rtw_cbuf cbuf)
325	{
326	void *buf;
327	if (rtw_cbuf_empty(cbuf))
328	return NULL;
329
330	if (0)
331	DBG_88E("%s on %u\n", __func__, cbuf->read);
332	buf = cbuf->bufs[cbuf->read];
333	cbuf->read = (cbuf->read+1)%cbuf->size;
334
335	return buf;
336	}
337
338	/**
7efc02ca	339	* rtw_cbuf_alloc - allocate a rtw_cbuf with given size and do initialization
a2c60d42 LF	340	* @size: size of pointer
	341	*
	342	* Returns: pointer of srtuct rtw_cbuf, NULL for allocation failure
	343	*/
	344	struct rtw_cbuf *rtw_cbuf_alloc(u32 size)
	345	{
	346	struct rtw_cbuf *cbuf;
	347
	348	cbuf = (struct rtw_cbuf )rtw_malloc(sizeof(cbuf) +
	349	sizeof(void )size);
	350
	351	if (cbuf) {
	352	cbuf->write = 0;
	353	cbuf->read = 0;
	354	cbuf->size = size;
	355	}
	356	return cbuf;
	357	}