Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 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> |
| 25 | #include <drv_types.h> |
| 26 | #include <recv_osdep.h> |
| 27 | #include <linux/vmalloc.h> |
| 28 | #include <rtw_ioctl_set.h> |
| 29 | |
| 30 | /* |
| 31 | * Translate the OS dependent @param error_code to OS independent RTW_STATUS_CODE |
| 32 | * @return: one of RTW_STATUS_CODE |
| 33 | */ |
| 34 | inline int RTW_STATUS_CODE(int error_code) |
| 35 | { |
| 36 | if (error_code >= 0) |
| 37 | return _SUCCESS; |
| 38 | return _FAIL; |
| 39 | } |
| 40 | |
| 41 | u32 rtw_atoi(u8 *s) |
| 42 | { |
| 43 | int num = 0, flag = 0; |
| 44 | int i; |
| 45 | for (i = 0; i <= strlen(s); i++) { |
| 46 | if (s[i] >= '0' && s[i] <= '9') |
| 47 | num = num * 10 + s[i] - '0'; |
| 48 | else if (s[0] == '-' && i == 0) |
| 49 | flag = 1; |
| 50 | else |
| 51 | break; |
| 52 | } |
| 53 | if (flag == 1) |
| 54 | num = num * -1; |
Teodora Baluta | 1f9d82d | 2013-11-08 00:13:46 +0200 | [diff] [blame] | 55 | return num; |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 56 | } |
| 57 | |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 58 | u8 *_rtw_malloc(u32 sz) |
| 59 | { |
| 60 | u8 *pbuf = NULL; |
| 61 | |
| 62 | pbuf = kmalloc(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); |
| 63 | return pbuf; |
| 64 | } |
| 65 | |
| 66 | u8 *_rtw_zmalloc(u32 sz) |
| 67 | { |
| 68 | u8 *pbuf = _rtw_malloc(sz); |
| 69 | |
| 70 | if (pbuf != NULL) |
| 71 | memset(pbuf, 0, sz); |
| 72 | return pbuf; |
| 73 | } |
| 74 | |
| 75 | void *rtw_malloc2d(int h, int w, int size) |
| 76 | { |
| 77 | int j; |
| 78 | |
| 79 | void **a = (void **)rtw_zmalloc(h*sizeof(void *) + h*w*size); |
| 80 | if (a == NULL) { |
| 81 | pr_info("%s: alloc memory fail!\n", __func__); |
| 82 | return NULL; |
| 83 | } |
| 84 | |
| 85 | for (j = 0; j < h; j++) |
| 86 | a[j] = ((char *)(a+h)) + j*w*size; |
| 87 | |
| 88 | return a; |
| 89 | } |
| 90 | |
| 91 | void rtw_mfree2d(void *pbuf, int h, int w, int size) |
| 92 | { |
| 93 | kfree(pbuf); |
| 94 | } |
| 95 | |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 96 | void _rtw_memset(void *pbuf, int c, u32 sz) |
| 97 | { |
| 98 | memset(pbuf, c, sz); |
| 99 | } |
| 100 | |
| 101 | void _rtw_init_listhead(struct list_head *list) |
| 102 | { |
| 103 | INIT_LIST_HEAD(list); |
| 104 | } |
| 105 | |
| 106 | /* |
| 107 | For the following list_xxx operations, |
| 108 | caller must guarantee the atomic context. |
| 109 | Otherwise, there will be racing condition. |
| 110 | */ |
| 111 | u32 rtw_is_list_empty(struct list_head *phead) |
| 112 | { |
| 113 | if (list_empty(phead)) |
| 114 | return true; |
| 115 | else |
| 116 | return false; |
| 117 | } |
| 118 | |
| 119 | void rtw_list_insert_head(struct list_head *plist, struct list_head *phead) |
| 120 | { |
| 121 | list_add(plist, phead); |
| 122 | } |
| 123 | |
| 124 | void rtw_list_insert_tail(struct list_head *plist, struct list_head *phead) |
| 125 | { |
| 126 | list_add_tail(plist, phead); |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | Caller must check if the list is empty before calling rtw_list_delete |
| 131 | */ |
| 132 | |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 133 | u32 _rtw_down_sema(struct semaphore *sema) |
| 134 | { |
| 135 | if (down_interruptible(sema)) |
| 136 | return _FAIL; |
| 137 | else |
| 138 | return _SUCCESS; |
| 139 | } |
| 140 | |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 141 | void _rtw_init_queue(struct __queue *pqueue) |
| 142 | { |
| 143 | _rtw_init_listhead(&(pqueue->queue)); |
Larry Finger | f214e52 | 2013-12-19 22:38:38 -0600 | [diff] [blame] | 144 | spin_lock_init(&(pqueue->lock)); |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 145 | } |
| 146 | |
| 147 | u32 _rtw_queue_empty(struct __queue *pqueue) |
| 148 | { |
| 149 | return rtw_is_list_empty(&(pqueue->queue)); |
| 150 | } |
| 151 | |
| 152 | u32 rtw_end_of_queue_search(struct list_head *head, struct list_head *plist) |
| 153 | { |
| 154 | if (head == plist) |
| 155 | return true; |
| 156 | else |
| 157 | return false; |
| 158 | } |
| 159 | |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 160 | inline u32 rtw_systime_to_ms(u32 systime) |
| 161 | { |
| 162 | return systime * 1000 / HZ; |
| 163 | } |
| 164 | |
| 165 | inline u32 rtw_ms_to_systime(u32 ms) |
| 166 | { |
| 167 | return ms * HZ / 1000; |
| 168 | } |
| 169 | |
Larry Finger | c01fb49 | 2013-12-19 22:38:40 -0600 | [diff] [blame] | 170 | /* the input parameter start must be in jiffies */ |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 171 | inline s32 rtw_get_passing_time_ms(u32 start) |
| 172 | { |
| 173 | return rtw_systime_to_ms(jiffies-start); |
| 174 | } |
| 175 | |
| 176 | inline s32 rtw_get_time_interval_ms(u32 start, u32 end) |
| 177 | { |
| 178 | return rtw_systime_to_ms(end-start); |
| 179 | } |
| 180 | |
| 181 | void rtw_sleep_schedulable(int ms) |
| 182 | { |
| 183 | u32 delta; |
| 184 | |
| 185 | delta = (ms * HZ)/1000;/* ms) */ |
| 186 | if (delta == 0) |
| 187 | delta = 1;/* 1 ms */ |
| 188 | set_current_state(TASK_INTERRUPTIBLE); |
| 189 | if (schedule_timeout(delta) != 0) |
| 190 | return; |
| 191 | } |
| 192 | |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 193 | #define RTW_SUSPEND_LOCK_NAME "rtw_wifi" |
| 194 | |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 195 | struct net_device *rtw_alloc_etherdev_with_old_priv(int sizeof_priv, |
| 196 | void *old_priv) |
| 197 | { |
| 198 | struct net_device *pnetdev; |
| 199 | struct rtw_netdev_priv_indicator *pnpi; |
| 200 | |
| 201 | pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4); |
| 202 | if (!pnetdev) |
| 203 | goto RETURN; |
| 204 | |
| 205 | pnpi = netdev_priv(pnetdev); |
| 206 | pnpi->priv = old_priv; |
| 207 | pnpi->sizeof_priv = sizeof_priv; |
| 208 | |
| 209 | RETURN: |
| 210 | return pnetdev; |
| 211 | } |
| 212 | |
| 213 | struct net_device *rtw_alloc_etherdev(int sizeof_priv) |
| 214 | { |
| 215 | struct net_device *pnetdev; |
| 216 | struct rtw_netdev_priv_indicator *pnpi; |
| 217 | |
| 218 | pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4); |
| 219 | if (!pnetdev) |
| 220 | goto RETURN; |
| 221 | |
| 222 | pnpi = netdev_priv(pnetdev); |
| 223 | |
Larry Finger | 2397c6e | 2014-02-06 20:45:42 -0600 | [diff] [blame] | 224 | pnpi->priv = vzalloc(sizeof_priv); |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 225 | if (!pnpi->priv) { |
| 226 | free_netdev(pnetdev); |
| 227 | pnetdev = NULL; |
| 228 | goto RETURN; |
| 229 | } |
| 230 | |
| 231 | pnpi->sizeof_priv = sizeof_priv; |
| 232 | RETURN: |
| 233 | return pnetdev; |
| 234 | } |
| 235 | |
| 236 | void rtw_free_netdev(struct net_device *netdev) |
| 237 | { |
| 238 | struct rtw_netdev_priv_indicator *pnpi; |
| 239 | |
| 240 | if (!netdev) |
| 241 | goto RETURN; |
| 242 | |
| 243 | pnpi = netdev_priv(netdev); |
| 244 | |
| 245 | if (!pnpi->priv) |
| 246 | goto RETURN; |
| 247 | |
Larry Finger | 03bd6ae | 2014-02-06 20:45:43 -0600 | [diff] [blame] | 248 | vfree(pnpi->priv); |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 249 | free_netdev(netdev); |
| 250 | |
| 251 | RETURN: |
| 252 | return; |
| 253 | } |
| 254 | |
| 255 | int rtw_change_ifname(struct adapter *padapter, const char *ifname) |
| 256 | { |
| 257 | struct net_device *pnetdev; |
Larry Finger | efbff73 | 2013-09-04 15:56:00 -0500 | [diff] [blame] | 258 | struct net_device *cur_pnetdev; |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 259 | struct rereg_nd_name_data *rereg_priv; |
| 260 | int ret; |
| 261 | |
| 262 | if (!padapter) |
| 263 | goto error; |
| 264 | |
Larry Finger | efbff73 | 2013-09-04 15:56:00 -0500 | [diff] [blame] | 265 | cur_pnetdev = padapter->pnetdev; |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 266 | rereg_priv = &padapter->rereg_nd_name_priv; |
| 267 | |
| 268 | /* free the old_pnetdev */ |
| 269 | if (rereg_priv->old_pnetdev) { |
| 270 | free_netdev(rereg_priv->old_pnetdev); |
| 271 | rereg_priv->old_pnetdev = NULL; |
| 272 | } |
| 273 | |
| 274 | if (!rtnl_is_locked()) |
| 275 | unregister_netdev(cur_pnetdev); |
| 276 | else |
| 277 | unregister_netdevice(cur_pnetdev); |
| 278 | |
| 279 | rtw_proc_remove_one(cur_pnetdev); |
| 280 | |
| 281 | rereg_priv->old_pnetdev = cur_pnetdev; |
| 282 | |
| 283 | pnetdev = rtw_init_netdev(padapter); |
| 284 | if (!pnetdev) { |
| 285 | ret = -1; |
| 286 | goto error; |
| 287 | } |
| 288 | |
| 289 | SET_NETDEV_DEV(pnetdev, dvobj_to_dev(adapter_to_dvobj(padapter))); |
| 290 | |
| 291 | rtw_init_netdev_name(pnetdev, ifname); |
| 292 | |
| 293 | memcpy(pnetdev->dev_addr, padapter->eeprompriv.mac_addr, ETH_ALEN); |
| 294 | |
| 295 | if (!rtnl_is_locked()) |
| 296 | ret = register_netdev(pnetdev); |
| 297 | else |
| 298 | ret = register_netdevice(pnetdev); |
| 299 | if (ret != 0) { |
| 300 | RT_TRACE(_module_hci_intfs_c_, _drv_err_, |
| 301 | ("register_netdev() failed\n")); |
| 302 | goto error; |
| 303 | } |
| 304 | rtw_proc_init_one(pnetdev); |
| 305 | return 0; |
| 306 | error: |
| 307 | return -1; |
| 308 | } |
| 309 | |
| 310 | u64 rtw_modular64(u64 x, u64 y) |
| 311 | { |
| 312 | return do_div(x, y); |
| 313 | } |
| 314 | |
| 315 | u64 rtw_division64(u64 x, u64 y) |
| 316 | { |
| 317 | do_div(x, y); |
| 318 | return x; |
| 319 | } |
| 320 | |
| 321 | void rtw_buf_free(u8 **buf, u32 *buf_len) |
| 322 | { |
| 323 | *buf_len = 0; |
| 324 | kfree(*buf); |
| 325 | *buf = NULL; |
| 326 | } |
| 327 | |
| 328 | void rtw_buf_update(u8 **buf, u32 *buf_len, u8 *src, u32 src_len) |
| 329 | { |
| 330 | u32 ori_len = 0, dup_len = 0; |
| 331 | u8 *ori = NULL; |
| 332 | u8 *dup = NULL; |
| 333 | |
| 334 | if (!buf || !buf_len) |
| 335 | return; |
| 336 | |
| 337 | if (!src || !src_len) |
| 338 | goto keep_ori; |
| 339 | |
| 340 | /* duplicate src */ |
| 341 | dup = rtw_malloc(src_len); |
| 342 | if (dup) { |
| 343 | dup_len = src_len; |
| 344 | memcpy(dup, src, dup_len); |
| 345 | } |
| 346 | |
| 347 | keep_ori: |
| 348 | ori = *buf; |
| 349 | ori_len = *buf_len; |
| 350 | |
| 351 | /* replace buf with dup */ |
| 352 | *buf_len = 0; |
| 353 | *buf = dup; |
| 354 | *buf_len = dup_len; |
| 355 | |
| 356 | /* free ori */ |
| 357 | kfree(ori); |
| 358 | } |
| 359 | |
| 360 | |
| 361 | /** |
| 362 | * rtw_cbuf_full - test if cbuf is full |
| 363 | * @cbuf: pointer of struct rtw_cbuf |
| 364 | * |
| 365 | * Returns: true if cbuf is full |
| 366 | */ |
| 367 | inline bool rtw_cbuf_full(struct rtw_cbuf *cbuf) |
| 368 | { |
| 369 | return (cbuf->write == cbuf->read-1) ? true : false; |
| 370 | } |
| 371 | |
| 372 | /** |
| 373 | * rtw_cbuf_empty - test if cbuf is empty |
| 374 | * @cbuf: pointer of struct rtw_cbuf |
| 375 | * |
| 376 | * Returns: true if cbuf is empty |
| 377 | */ |
| 378 | inline bool rtw_cbuf_empty(struct rtw_cbuf *cbuf) |
| 379 | { |
| 380 | return (cbuf->write == cbuf->read) ? true : false; |
| 381 | } |
| 382 | |
| 383 | /** |
| 384 | * rtw_cbuf_push - push a pointer into cbuf |
| 385 | * @cbuf: pointer of struct rtw_cbuf |
| 386 | * @buf: pointer to push in |
| 387 | * |
| 388 | * Lock free operation, be careful of the use scheme |
| 389 | * Returns: true push success |
| 390 | */ |
| 391 | bool rtw_cbuf_push(struct rtw_cbuf *cbuf, void *buf) |
| 392 | { |
| 393 | if (rtw_cbuf_full(cbuf)) |
| 394 | return _FAIL; |
| 395 | |
| 396 | if (0) |
| 397 | DBG_88E("%s on %u\n", __func__, cbuf->write); |
| 398 | cbuf->bufs[cbuf->write] = buf; |
| 399 | cbuf->write = (cbuf->write+1)%cbuf->size; |
| 400 | |
| 401 | return _SUCCESS; |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * rtw_cbuf_pop - pop a pointer from cbuf |
| 406 | * @cbuf: pointer of struct rtw_cbuf |
| 407 | * |
| 408 | * Lock free operation, be careful of the use scheme |
| 409 | * Returns: pointer popped out |
| 410 | */ |
| 411 | void *rtw_cbuf_pop(struct rtw_cbuf *cbuf) |
| 412 | { |
| 413 | void *buf; |
| 414 | if (rtw_cbuf_empty(cbuf)) |
| 415 | return NULL; |
| 416 | |
| 417 | if (0) |
| 418 | DBG_88E("%s on %u\n", __func__, cbuf->read); |
| 419 | buf = cbuf->bufs[cbuf->read]; |
| 420 | cbuf->read = (cbuf->read+1)%cbuf->size; |
| 421 | |
| 422 | return buf; |
| 423 | } |
| 424 | |
| 425 | /** |
Masanari Iida | 7efc02c | 2013-09-27 00:11:46 +0900 | [diff] [blame] | 426 | * rtw_cbuf_alloc - allocate a rtw_cbuf with given size and do initialization |
Larry Finger | a2c60d4 | 2013-08-21 22:33:58 -0500 | [diff] [blame] | 427 | * @size: size of pointer |
| 428 | * |
| 429 | * Returns: pointer of srtuct rtw_cbuf, NULL for allocation failure |
| 430 | */ |
| 431 | struct rtw_cbuf *rtw_cbuf_alloc(u32 size) |
| 432 | { |
| 433 | struct rtw_cbuf *cbuf; |
| 434 | |
| 435 | cbuf = (struct rtw_cbuf *)rtw_malloc(sizeof(*cbuf) + |
| 436 | sizeof(void *)*size); |
| 437 | |
| 438 | if (cbuf) { |
| 439 | cbuf->write = 0; |
| 440 | cbuf->read = 0; |
| 441 | cbuf->size = size; |
| 442 | } |
| 443 | return cbuf; |
| 444 | } |