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Diffstat (limited to 'drivers/staging/rtl8723bs/os_dep/osdep_service.c')
-rw-r--r--drivers/staging/rtl8723bs/os_dep/osdep_service.c481
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;
+}
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