diff options
Diffstat (limited to 'drivers/staging/rtl8723bs/os_dep/osdep_service.c')
| -rw-r--r-- | drivers/staging/rtl8723bs/os_dep/osdep_service.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/drivers/staging/rtl8723bs/os_dep/osdep_service.c b/drivers/staging/rtl8723bs/os_dep/osdep_service.c new file mode 100644 index 0000000000..f09c1324c3 --- /dev/null +++ b/drivers/staging/rtl8723bs/os_dep/osdep_service.c @@ -0,0 +1,235 @@ +// SPDX-License-Identifier: GPL-2.0 +/****************************************************************************** + * + * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved. + * + ******************************************************************************/ +#include <drv_types.h> +#include <rtw_debug.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; +} + +void *_rtw_malloc(u32 sz) +{ + return kmalloc(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); +} + +void *_rtw_zmalloc(u32 sz) +{ + void *pbuf = _rtw_malloc(sz); + + if (pbuf) + memset(pbuf, 0, sz); + + return pbuf; +} + +inline struct sk_buff *_rtw_skb_alloc(u32 sz) +{ + return __dev_alloc_skb(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); +} + +inline struct sk_buff *_rtw_skb_copy(const struct sk_buff *skb) +{ + return skb_copy(skb, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); +} + +inline int _rtw_netif_rx(struct net_device *ndev, struct sk_buff *skb) +{ + skb->dev = ndev; + return netif_rx(skb); +} + +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; +} + +void rtw_buf_free(u8 **buf, u32 *buf_len) +{ + if (!buf || !buf_len) + return; + + if (*buf) { + *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 */ + if (ori && ori_len > 0) + 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; + + 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; + + 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 = rtw_malloc(struct_size(cbuf, bufs, size)); + + if (cbuf) { + cbuf->write = cbuf->read = 0; + cbuf->size = size; + } + + return cbuf; +} |