diff options
Diffstat (limited to 'drivers/staging/rtl8723bs/os_dep/osdep_service.c')
-rw-r--r-- | drivers/staging/rtl8723bs/os_dep/osdep_service.c | 481 |
1 files changed, 481 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 0000000..02db59e --- /dev/null +++ b/drivers/staging/rtl8723bs/os_dep/osdep_service.c @@ -0,0 +1,481 @@ +/****************************************************************************** + * + * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + ******************************************************************************/ + + +#define _OSDEP_SERVICE_C_ + +#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; +} + +u8 *_rtw_malloc(u32 sz) +{ + u8 *pbuf = NULL; + + pbuf = kmalloc(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); + + return pbuf; +} + +u8 *_rtw_zmalloc(u32 sz) +{ + u8 *pbuf = _rtw_malloc(sz); + + if (pbuf != NULL) { + 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 struct sk_buff *_rtw_skb_clone(struct sk_buff *skb) +{ + return skb_clone(skb, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); +} + +inline int _rtw_netif_rx(_nic_hdl ndev, struct sk_buff *skb) +{ + skb->dev = ndev; + return netif_rx(skb); +} + +void rtw_init_timer(_timer *ptimer, void *padapter, void *pfunc) +{ + struct adapter *adapter = (struct adapter *)padapter; + + _init_timer(ptimer, adapter->pnetdev, pfunc, adapter); +} + +void _rtw_init_queue(struct __queue *pqueue) +{ + INIT_LIST_HEAD(&(pqueue->queue)); + + spin_lock_init(&(pqueue->lock)); +} + +/* +* Open a file with the specific @param path, @param flag, @param mode +* @param fpp the pointer of struct file pointer to get struct file pointer while file opening is success +* @param path the path of the file to open +* @param flag file operation flags, please refer to linux document +* @param mode please refer to linux document +* @return Linux specific error code +*/ +static int openFile(struct file **fpp, char *path, int flag, int mode) +{ + struct file *fp; + + fp =filp_open(path, flag, mode); + if (IS_ERR(fp)) { + *fpp = NULL; + return PTR_ERR(fp); + } + else { + *fpp =fp; + return 0; + } +} + +/* +* Close the file with the specific @param fp +* @param fp the pointer of struct file to close +* @return always 0 +*/ +static int closeFile(struct file *fp) +{ + filp_close(fp, NULL); + return 0; +} + +static int readFile(struct file *fp, char *buf, int len) +{ + int rlen = 0, sum = 0; + + if (!fp->f_op || !fp->f_op->read) + return -EPERM; + + while (sum<len) { + rlen =fp->f_op->read(fp, (char __force __user *)buf+sum, len-sum, &fp->f_pos); + if (rlen>0) + sum+=rlen; + else if (0 != rlen) + return rlen; + else + break; + } + + return sum; + +} + +/* +* Test if the specifi @param path is a file and readable +* @param path the path of the file to test +* @return Linux specific error code +*/ +static int isFileReadable(char *path) +{ + struct file *fp; + int ret = 0; + mm_segment_t oldfs; + char buf; + + fp =filp_open(path, O_RDONLY, 0); + if (IS_ERR(fp)) { + ret = PTR_ERR(fp); + } + else { + oldfs = get_fs(); set_fs(get_ds()); + + if (1!=readFile(fp, &buf, 1)) + ret = PTR_ERR(fp); + + set_fs(oldfs); + filp_close(fp, NULL); + } + return ret; +} + +/* +* Open the file with @param path and retrive the file content into memory starting from @param buf for @param sz at most +* @param path the path of the file to open and read +* @param buf the starting address of the buffer to store file content +* @param sz how many bytes to read at most +* @return the byte we've read, or Linux specific error code +*/ +static int retriveFromFile(char *path, u8 *buf, u32 sz) +{ + int ret =-1; + mm_segment_t oldfs; + struct file *fp; + + if (path && buf) { + if (0 == (ret =openFile(&fp, path, O_RDONLY, 0))) { + DBG_871X("%s openFile path:%s fp =%p\n", __func__, path , fp); + + oldfs = get_fs(); set_fs(get_ds()); + ret =readFile(fp, buf, sz); + set_fs(oldfs); + closeFile(fp); + + DBG_871X("%s readFile, ret:%d\n", __func__, ret); + + } else { + DBG_871X("%s openFile path:%s Fail, ret:%d\n", __func__, path, ret); + } + } else { + DBG_871X("%s NULL pointer\n", __func__); + ret = -EINVAL; + } + return ret; +} + +/* +* Test if the specifi @param path is a file and readable +* @param path the path of the file to test +* @return true or false +*/ +int rtw_is_file_readable(char *path) +{ + if (isFileReadable(path) == 0) + return true; + else + return false; +} + +/* +* Open the file with @param path and retrive the file content into memory starting from @param buf for @param sz at most +* @param path the path of the file to open and read +* @param buf the starting address of the buffer to store file content +* @param sz how many bytes to read at most +* @return the byte we've read +*/ +int rtw_retrive_from_file(char *path, u8 *buf, u32 sz) +{ + int ret =retriveFromFile(path, buf, sz); + return ret>= 0?ret:0; +} + +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; +} + +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); + + 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) { + RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("register_netdev() failed\n")); + goto error; + } + + return 0; + +error: + + return -1; + +} + +u64 rtw_modular64(u64 x, u64 y) +{ + return do_div(x, y); +} + +void rtw_buf_free(u8 **buf, u32 *buf_len) +{ + u32 ori_len; + + if (!buf || !buf_len) + return; + + ori_len = *buf_len; + + 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; + + DBG_871X("%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; + + DBG_871X("%s on %u\n", __func__, cbuf->read); + buf = cbuf->bufs[cbuf->read]; + cbuf->read = (cbuf->read+1)%cbuf->size; + + return buf; +} + +/** + * rtw_cbuf_alloc - allocte 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 = (struct rtw_cbuf *)rtw_malloc(sizeof(*cbuf) + sizeof(void*)*size); + + if (cbuf) { + cbuf->write = cbuf->read = 0; + cbuf->size = size; + } + + return cbuf; +} |