diff options
Diffstat (limited to 'drivers/staging/r8188eu/os_dep/osdep_service.c')
| -rw-r--r-- | drivers/staging/r8188eu/os_dep/osdep_service.c | 343 |
1 files changed, 343 insertions, 0 deletions
diff --git a/drivers/staging/r8188eu/os_dep/osdep_service.c b/drivers/staging/r8188eu/os_dep/osdep_service.c new file mode 100644 index 000000000000..95ac6086370b --- /dev/null +++ b/drivers/staging/r8188eu/os_dep/osdep_service.c @@ -0,0 +1,343 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2007 - 2012 Realtek Corporation. */ + +#define _OSDEP_SERVICE_C_ + +#include "../include/osdep_service.h" +#include "../include/drv_types.h" +#include "../include/recv_osdep.h" +#include "../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; +} + +u32 rtw_atoi(u8 *s) +{ + int num = 0, flag = 0; + int i; + for (i = 0; i <= strlen(s); i++) { + if (s[i] >= '0' && s[i] <= '9') + num = num * 10 + s[i] - '0'; + else if (s[0] == '-' && i == 0) + flag = 1; + else + break; + } + if (flag == 1) + num = num * -1; + return num; +} + +void *rtw_malloc2d(int h, int w, int size) +{ + int j; + + void **a = kzalloc(h * sizeof(void *) + h * w * size, GFP_KERNEL); + if (!a) + return NULL; + + for (j = 0; j < h; j++) + a[j] = ((char *)(a + h)) + j * w * size; + + return a; +} + +/* +For the following list_xxx operations, +caller must guarantee the atomic context. +Otherwise, there will be racing condition. +*/ +/* +Caller must check if the list is empty before calling rtw_list_delete +*/ + +u32 _rtw_down_sema(struct semaphore *sema) +{ + if (down_interruptible(sema)) + return _FAIL; + else + return _SUCCESS; +} + +void _rtw_mutex_init(struct mutex *pmutex) +{ + mutex_init(pmutex); +} + +void _rtw_mutex_free(struct mutex *pmutex) +{ + mutex_destroy(pmutex); +} + +void _rtw_init_queue(struct __queue *pqueue) +{ + INIT_LIST_HEAD(&pqueue->queue); + spin_lock_init(&pqueue->lock); +} + +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 use the same unit as jiffies */ +inline s32 rtw_get_passing_time_ms(u32 start) +{ + return rtw_systime_to_ms(jiffies - start); +} + +void rtw_usleep_os(int us) +{ + if (1 < (us / 1000)) + msleep(1); + else + msleep((us / 1000) + 1); +} + +#define RTW_SUSPEND_LOCK_NAME "rtw_wifi" + +static const struct device_type wlan_type = { + .name = "wlan", +}; + +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; + + pnetdev->dev.type = &wlan_type; + 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) + goto error; + + rtw_proc_init_one(pnetdev); + return 0; +error: + return -1; +} + +void rtw_buf_update(u8 **buf, u32 *buf_len, u8 *src, u32 src_len) +{ + u32 dup_len = 0; + u8 *ori = NULL; + u8 *dup = NULL; + + if (!buf || !buf_len) + return; + + if (!src || !src_len) + goto keep_ori; + + /* duplicate src */ + dup = kmalloc(src_len, GFP_ATOMIC); + if (dup) { + dup_len = src_len; + memcpy(dup, src, dup_len); + } + +keep_ori: + ori = *buf; + + /* 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 = kmalloc(sizeof(*cbuf) + sizeof(void *) * size, GFP_KERNEL); + + if (cbuf) { + cbuf->write = 0; + cbuf->read = 0; + cbuf->size = size; + } + return cbuf; +} |