1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2007 - 2012 Realtek Corporation. */
4 #define _OSDEP_SERVICE_C_
6 #include "../include/osdep_service.h"
7 #include "../include/drv_types.h"
8 #include "../include/recv_osdep.h"
9 #include "../include/linux/vmalloc.h"
10 #include "../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 void *rtw_malloc2d(int h, int w, int size)
60 void **a = kzalloc(h * sizeof(void *) + h * w * size, GFP_KERNEL);
64 for (j = 0; j < h; j++)
65 a[j] = ((char *)(a+h)) + j*w*size;
71 For the following list_xxx operations,
72 caller must guarantee the atomic context.
73 Otherwise, there will be racing condition.
76 Caller must check if the list is empty before calling rtw_list_delete
79 u32 _rtw_down_sema(struct semaphore *sema)
81 if (down_interruptible(sema))
87 void _rtw_mutex_init(struct mutex *pmutex)
92 void _rtw_mutex_free(struct mutex *pmutex)
94 mutex_destroy(pmutex);
97 void _rtw_init_queue(struct __queue *pqueue)
99 INIT_LIST_HEAD(&(pqueue->queue));
100 spin_lock_init(&(pqueue->lock));
103 inline u32 rtw_systime_to_ms(u32 systime)
105 return systime * 1000 / HZ;
108 inline u32 rtw_ms_to_systime(u32 ms)
110 return ms * HZ / 1000;
113 /* the input parameter start use the same unit as jiffies */
114 inline s32 rtw_get_passing_time_ms(u32 start)
116 return rtw_systime_to_ms(jiffies-start);
119 inline s32 rtw_get_time_interval_ms(u32 start, u32 end)
121 return rtw_systime_to_ms(end-start);
124 void rtw_sleep_schedulable(int ms)
128 delta = (ms * HZ)/1000;/* ms) */
131 set_current_state(TASK_INTERRUPTIBLE);
132 if (schedule_timeout(delta) != 0)
136 void rtw_msleep_os(int ms)
138 msleep((unsigned int)ms);
141 void rtw_usleep_os(int us)
146 msleep((us/1000) + 1);
149 void rtw_mdelay_os(int ms)
151 mdelay((unsigned long)ms);
154 void rtw_udelay_os(int us)
156 udelay((unsigned long)us);
159 void rtw_yield_os(void)
164 #define RTW_SUSPEND_LOCK_NAME "rtw_wifi"
166 static const struct device_type wlan_type = {
170 struct net_device *rtw_alloc_etherdev_with_old_priv(int sizeof_priv,
173 struct net_device *pnetdev;
174 struct rtw_netdev_priv_indicator *pnpi;
176 pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4);
180 pnetdev->dev.type = &wlan_type;
181 pnpi = netdev_priv(pnetdev);
182 pnpi->priv = old_priv;
183 pnpi->sizeof_priv = sizeof_priv;
189 struct net_device *rtw_alloc_etherdev(int sizeof_priv)
191 struct net_device *pnetdev;
192 struct rtw_netdev_priv_indicator *pnpi;
194 pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4);
198 pnpi = netdev_priv(pnetdev);
200 pnpi->priv = rtw_zvmalloc(sizeof_priv);
202 free_netdev(pnetdev);
207 pnpi->sizeof_priv = sizeof_priv;
212 void rtw_free_netdev(struct net_device *netdev)
214 struct rtw_netdev_priv_indicator *pnpi;
219 pnpi = netdev_priv(netdev);
231 int rtw_change_ifname(struct adapter *padapter, const char *ifname)
233 struct net_device *pnetdev;
234 struct net_device *cur_pnetdev;
235 struct rereg_nd_name_data *rereg_priv;
241 cur_pnetdev = padapter->pnetdev;
242 rereg_priv = &padapter->rereg_nd_name_priv;
244 /* free the old_pnetdev */
245 if (rereg_priv->old_pnetdev) {
246 free_netdev(rereg_priv->old_pnetdev);
247 rereg_priv->old_pnetdev = NULL;
250 if (!rtnl_is_locked())
251 unregister_netdev(cur_pnetdev);
253 unregister_netdevice(cur_pnetdev);
255 rtw_proc_remove_one(cur_pnetdev);
257 rereg_priv->old_pnetdev = cur_pnetdev;
259 pnetdev = rtw_init_netdev(padapter);
265 SET_NETDEV_DEV(pnetdev, dvobj_to_dev(adapter_to_dvobj(padapter)));
267 rtw_init_netdev_name(pnetdev, ifname);
269 memcpy(pnetdev->dev_addr, padapter->eeprompriv.mac_addr, ETH_ALEN);
271 if (!rtnl_is_locked())
272 ret = register_netdev(pnetdev);
274 ret = register_netdevice(pnetdev);
276 RT_TRACE(_module_hci_intfs_c_, _drv_err_,
277 ("register_netdev() failed\n"));
280 rtw_proc_init_one(pnetdev);
286 void rtw_buf_update(u8 **buf, u32 *buf_len, u8 *src, u32 src_len)
292 if (!buf || !buf_len)
295 if (!src || !src_len)
299 dup = kmalloc(src_len, GFP_ATOMIC);
302 memcpy(dup, src, dup_len);
308 /* replace buf with dup */
318 * rtw_cbuf_full - test if cbuf is full
319 * @cbuf: pointer of struct rtw_cbuf
321 * Returns: true if cbuf is full
323 inline bool rtw_cbuf_full(struct rtw_cbuf *cbuf)
325 return (cbuf->write == cbuf->read-1) ? true : false;
329 * rtw_cbuf_empty - test if cbuf is empty
330 * @cbuf: pointer of struct rtw_cbuf
332 * Returns: true if cbuf is empty
334 inline bool rtw_cbuf_empty(struct rtw_cbuf *cbuf)
336 return (cbuf->write == cbuf->read) ? true : false;
340 * rtw_cbuf_push - push a pointer into cbuf
341 * @cbuf: pointer of struct rtw_cbuf
342 * @buf: pointer to push in
344 * Lock free operation, be careful of the use scheme
345 * Returns: true push success
347 bool rtw_cbuf_push(struct rtw_cbuf *cbuf, void *buf)
349 if (rtw_cbuf_full(cbuf))
353 DBG_88E("%s on %u\n", __func__, cbuf->write);
354 cbuf->bufs[cbuf->write] = buf;
355 cbuf->write = (cbuf->write+1)%cbuf->size;
361 * rtw_cbuf_pop - pop a pointer from cbuf
362 * @cbuf: pointer of struct rtw_cbuf
364 * Lock free operation, be careful of the use scheme
365 * Returns: pointer popped out
367 void *rtw_cbuf_pop(struct rtw_cbuf *cbuf)
370 if (rtw_cbuf_empty(cbuf))
374 DBG_88E("%s on %u\n", __func__, cbuf->read);
375 buf = cbuf->bufs[cbuf->read];
376 cbuf->read = (cbuf->read+1)%cbuf->size;
382 * rtw_cbuf_alloc - allocate a rtw_cbuf with given size and do initialization
383 * @size: size of pointer
385 * Returns: pointer of srtuct rtw_cbuf, NULL for allocation failure
387 struct rtw_cbuf *rtw_cbuf_alloc(u32 size)
389 struct rtw_cbuf *cbuf;
391 cbuf = kmalloc(sizeof(*cbuf) + sizeof(void *)*size, GFP_KERNEL);