1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2007 - 2012 Realtek Corporation. */
4 #define _OSDEP_SERVICE_C_
6 #include <osdep_service.h>
8 #include <recv_osdep.h>
9 #include <linux/vmalloc.h>
10 #include <rtw_ioctl_set.h>
13 * Translate the OS dependent @param error_code to OS independent RTW_STATUS_CODE
14 * @return: one of RTW_STATUS_CODE
16 inline int RTW_STATUS_CODE(int error_code)
25 int num = 0, flag = 0;
27 for (i = 0; i <= strlen(s); i++) {
28 if (s[i] >= '0' && s[i] <= '9')
29 num = num * 10 + s[i] - '0';
30 else if (s[0] == '-' && i == 0)
40 inline u8 *_rtw_vmalloc(u32 sz)
47 inline u8 *_rtw_zvmalloc(u32 sz)
50 pbuf = _rtw_vmalloc(sz);
56 inline void _rtw_vmfree(u8 *pbuf, u32 sz)
61 u8 *_rtw_malloc(u32 sz)
65 pbuf = kmalloc(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
69 u8 *_rtw_zmalloc(u32 sz)
71 u8 *pbuf = _rtw_malloc(sz);
78 void *rtw_malloc2d(int h, int w, int size)
82 void **a = (void **)rtw_zmalloc(h*sizeof(void *) + h*w*size);
84 pr_info("%s: alloc memory fail!\n", __func__);
88 for (j = 0; j < h; j++)
89 a[j] = ((char *)(a+h)) + j*w*size;
94 void rtw_mfree2d(void *pbuf, int h, int w, int size)
100 For the following list_xxx operations,
101 caller must guarantee the atomic context.
102 Otherwise, there will be racing condition.
105 Caller must check if the list is empty before calling rtw_list_delete
108 u32 _rtw_down_sema(struct semaphore *sema)
110 if (down_interruptible(sema))
116 void _rtw_mutex_init(struct mutex *pmutex)
121 void _rtw_mutex_free(struct mutex *pmutex)
123 mutex_destroy(pmutex);
126 void _rtw_spinlock_free(spinlock_t *plock)
130 void _rtw_init_queue(struct __queue *pqueue)
132 INIT_LIST_HEAD(&(pqueue->queue));
133 spin_lock_init(&(pqueue->lock));
136 inline u32 rtw_systime_to_ms(u32 systime)
138 return systime * 1000 / HZ;
141 inline u32 rtw_ms_to_systime(u32 ms)
143 return ms * HZ / 1000;
146 /* the input parameter start use the same unit as jiffies */
147 inline s32 rtw_get_passing_time_ms(u32 start)
149 return rtw_systime_to_ms(jiffies-start);
152 inline s32 rtw_get_time_interval_ms(u32 start, u32 end)
154 return rtw_systime_to_ms(end-start);
157 void rtw_sleep_schedulable(int ms)
161 delta = (ms * HZ)/1000;/* ms) */
164 set_current_state(TASK_INTERRUPTIBLE);
165 if (schedule_timeout(delta) != 0)
169 void rtw_msleep_os(int ms)
171 msleep((unsigned int)ms);
174 void rtw_usleep_os(int us)
179 msleep((us/1000) + 1);
182 void rtw_mdelay_os(int ms)
184 mdelay((unsigned long)ms);
187 void rtw_udelay_os(int us)
189 udelay((unsigned long)us);
192 void rtw_yield_os(void)
197 #define RTW_SUSPEND_LOCK_NAME "rtw_wifi"
199 inline void rtw_suspend_lock_init(void)
203 inline void rtw_suspend_lock_uninit(void)
207 inline void rtw_lock_suspend(void)
211 inline void rtw_unlock_suspend(void)
215 inline void ATOMIC_SET(ATOMIC_T *v, int i)
220 inline int ATOMIC_READ(ATOMIC_T *v)
222 return atomic_read(v);
225 inline void ATOMIC_ADD(ATOMIC_T *v, int i)
230 inline void ATOMIC_SUB(ATOMIC_T *v, int i)
235 inline void ATOMIC_INC(ATOMIC_T *v)
240 inline void ATOMIC_DEC(ATOMIC_T *v)
245 inline int ATOMIC_ADD_RETURN(ATOMIC_T *v, int i)
247 return atomic_add_return(i, v);
250 inline int ATOMIC_SUB_RETURN(ATOMIC_T *v, int i)
252 return atomic_sub_return(i, v);
255 inline int ATOMIC_INC_RETURN(ATOMIC_T *v)
257 return atomic_inc_return(v);
260 inline int ATOMIC_DEC_RETURN(ATOMIC_T *v)
262 return atomic_dec_return(v);
265 static const struct device_type wlan_type = {
269 struct net_device *rtw_alloc_etherdev_with_old_priv(int sizeof_priv,
272 struct net_device *pnetdev;
273 struct rtw_netdev_priv_indicator *pnpi;
275 pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4);
279 pnetdev->dev.type = &wlan_type;
280 pnpi = netdev_priv(pnetdev);
281 pnpi->priv = old_priv;
282 pnpi->sizeof_priv = sizeof_priv;
288 struct net_device *rtw_alloc_etherdev(int sizeof_priv)
290 struct net_device *pnetdev;
291 struct rtw_netdev_priv_indicator *pnpi;
293 pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4);
297 pnpi = netdev_priv(pnetdev);
299 pnpi->priv = rtw_zvmalloc(sizeof_priv);
301 free_netdev(pnetdev);
306 pnpi->sizeof_priv = sizeof_priv;
311 void rtw_free_netdev(struct net_device *netdev)
313 struct rtw_netdev_priv_indicator *pnpi;
318 pnpi = netdev_priv(netdev);
323 rtw_vmfree(pnpi->priv, pnpi->sizeof_priv);
330 int rtw_change_ifname(struct adapter *padapter, const char *ifname)
332 struct net_device *pnetdev;
333 struct net_device *cur_pnetdev;
334 struct rereg_nd_name_data *rereg_priv;
340 cur_pnetdev = padapter->pnetdev;
341 rereg_priv = &padapter->rereg_nd_name_priv;
343 /* free the old_pnetdev */
344 if (rereg_priv->old_pnetdev) {
345 free_netdev(rereg_priv->old_pnetdev);
346 rereg_priv->old_pnetdev = NULL;
349 if (!rtnl_is_locked())
350 unregister_netdev(cur_pnetdev);
352 unregister_netdevice(cur_pnetdev);
354 rtw_proc_remove_one(cur_pnetdev);
356 rereg_priv->old_pnetdev = cur_pnetdev;
358 pnetdev = rtw_init_netdev(padapter);
364 SET_NETDEV_DEV(pnetdev, dvobj_to_dev(adapter_to_dvobj(padapter)));
366 rtw_init_netdev_name(pnetdev, ifname);
368 memcpy(pnetdev->dev_addr, padapter->eeprompriv.mac_addr, ETH_ALEN);
370 if (!rtnl_is_locked())
371 ret = register_netdev(pnetdev);
373 ret = register_netdevice(pnetdev);
375 RT_TRACE(_module_hci_intfs_c_, _drv_err_,
376 ("register_netdev() failed\n"));
379 rtw_proc_init_one(pnetdev);
385 u64 rtw_modular64(u64 x, u64 y)
390 u64 rtw_division64(u64 x, u64 y)
396 void rtw_buf_free(u8 **buf, u32 *buf_len)
403 void rtw_buf_update(u8 **buf, u32 *buf_len, u8 *src, u32 src_len)
405 u32 ori_len = 0, dup_len = 0;
409 if (!buf || !buf_len)
412 if (!src || !src_len)
416 dup = rtw_malloc(src_len);
419 memcpy(dup, src, dup_len);
426 /* replace buf with dup */
436 * rtw_cbuf_full - test if cbuf is full
437 * @cbuf: pointer of struct rtw_cbuf
439 * Returns: true if cbuf is full
441 inline bool rtw_cbuf_full(struct rtw_cbuf *cbuf)
443 return (cbuf->write == cbuf->read-1) ? true : false;
447 * rtw_cbuf_empty - test if cbuf is empty
448 * @cbuf: pointer of struct rtw_cbuf
450 * Returns: true if cbuf is empty
452 inline bool rtw_cbuf_empty(struct rtw_cbuf *cbuf)
454 return (cbuf->write == cbuf->read) ? true : false;
458 * rtw_cbuf_push - push a pointer into cbuf
459 * @cbuf: pointer of struct rtw_cbuf
460 * @buf: pointer to push in
462 * Lock free operation, be careful of the use scheme
463 * Returns: true push success
465 bool rtw_cbuf_push(struct rtw_cbuf *cbuf, void *buf)
467 if (rtw_cbuf_full(cbuf))
471 DBG_88E("%s on %u\n", __func__, cbuf->write);
472 cbuf->bufs[cbuf->write] = buf;
473 cbuf->write = (cbuf->write+1)%cbuf->size;
479 * rtw_cbuf_pop - pop a pointer from cbuf
480 * @cbuf: pointer of struct rtw_cbuf
482 * Lock free operation, be careful of the use scheme
483 * Returns: pointer popped out
485 void *rtw_cbuf_pop(struct rtw_cbuf *cbuf)
488 if (rtw_cbuf_empty(cbuf))
492 DBG_88E("%s on %u\n", __func__, cbuf->read);
493 buf = cbuf->bufs[cbuf->read];
494 cbuf->read = (cbuf->read+1)%cbuf->size;
500 * rtw_cbuf_alloc - allocate a rtw_cbuf with given size and do initialization
501 * @size: size of pointer
503 * Returns: pointer of srtuct rtw_cbuf, NULL for allocation failure
505 struct rtw_cbuf *rtw_cbuf_alloc(u32 size)
507 struct rtw_cbuf *cbuf;
509 cbuf = (struct rtw_cbuf *)rtw_malloc(sizeof(*cbuf) +
510 sizeof(void *)*size);