diff options
Diffstat (limited to 'drivers/staging/rtl8723au/os_dep/osdep_service.c')
-rw-r--r-- | drivers/staging/rtl8723au/os_dep/osdep_service.c | 429 |
1 files changed, 429 insertions, 0 deletions
diff --git a/drivers/staging/rtl8723au/os_dep/osdep_service.c b/drivers/staging/rtl8723au/os_dep/osdep_service.c new file mode 100644 index 000000000000..aeb48db0ee8c --- /dev/null +++ b/drivers/staging/rtl8723au/os_dep/osdep_service.c @@ -0,0 +1,429 @@ +/****************************************************************************** + * + * 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 <osdep_service.h> +#include <drv_types.h> +#include <recv_osdep.h> +#include <linux/vmalloc.h> + +#define RT_TAG ('1178') + +/* +* Translate the OS dependent @param error_code to OS independent RTW_STATUS_CODE23a +* @return: one of RTW_STATUS_CODE23a +*/ +inline int RTW_STATUS_CODE23a(int error_code) +{ + if (error_code >= 0) + return _SUCCESS; + return _FAIL; +} + +inline u8 *_rtw_vmalloc(u32 sz) +{ + u8 *pbuf; + pbuf = vmalloc(sz); + + return pbuf; +} + +inline u8 *_rtw_zvmalloc(u32 sz) +{ + u8 *pbuf; + pbuf = _rtw_vmalloc(sz); + if (pbuf != NULL) + memset(pbuf, 0, sz); + + return pbuf; +} + +inline void _rtw_vmfree(u8 *pbuf, u32 sz) +{ + vfree(pbuf); +} + +void _rtw_init_queue23a(struct rtw_queue *pqueue) +{ + INIT_LIST_HEAD(&pqueue->queue); + spin_lock_init(&pqueue->lock); +} + +u32 _rtw_queue_empty23a(struct rtw_queue *pqueue) +{ + if (list_empty(&pqueue->queue)) + return true; + else + return false; +} + +u32 rtw_get_current_time(void) +{ + return jiffies; +} + +inline u32 rtw_systime_to_ms23a(u32 systime) +{ + return systime * 1000 / HZ; +} + +inline u32 rtw_ms_to_systime23a(u32 ms) +{ + return ms * HZ / 1000; +} + +/* the input parameter start use the same unit as returned + * by rtw_get_current_time + */ +inline s32 rtw_get_passing_time_ms23a(u32 start) +{ + return rtw_systime_to_ms23a(jiffies-start); +} + +inline s32 rtw_get_time_interval_ms23a(u32 start, u32 end) +{ + return rtw_systime_to_ms23a(end-start); +} + +#define RTW_SUSPEND_LOCK_NAME "rtw_wifi" + +inline void rtw_suspend_lock_init(void) +{ +} + +inline void rtw_suspend_lock_uninit(void) +{ +} + +inline void rtw_lock_suspend(void) +{ +} + +inline void rtw_unlock_suspend(void) +{ +} + +/* 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, buf+sum, len-sum, &fp->f_pos); + if (rlen > 0) + sum += rlen; + else if (0 != rlen) + return rlen; + else + break; + } + return sum; +} + +static int writeFile(struct file *fp, char *buf, int len) +{ + int wlen = 0, sum = 0; + + if (!fp->f_op || !fp->f_op->write) + return -EPERM; + + while (sum < len) { + wlen = fp->f_op->write(fp, buf+sum, len-sum, &fp->f_pos); + if (wlen > 0) + sum += wlen; + else if (0 != wlen) + return wlen; + 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) { + ret = openFile(&fp, path, O_RDONLY, 0); + if (!ret) { + DBG_8723A("%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_8723A("%s readFile, ret:%d\n", __func__, ret); + } else { + DBG_8723A("%s openFile path:%s Fail, ret:%d\n", + __func__, path, ret); + } + } else { + DBG_8723A("%s NULL pointer\n", __func__); + ret = -EINVAL; + } + return ret; +} + +/* Open the file with @param path and wirte @param sz byte of data starting + * from @param buf into the file + * @param path the path of the file to open and write + * @param buf the starting address of the data to write into file + * @param sz how many bytes to write at most + * @return the byte we've written, or Linux specific error code + */ +static int storeToFile(char *path, u8 *buf, u32 sz) +{ + struct file *fp; + int ret = 0; + mm_segment_t oldfs; + + if (path && buf) { + ret = openFile(&fp, path, O_CREAT|O_WRONLY, 0666); + if (!ret) { + DBG_8723A("%s openFile path:%s fp =%p\n", __func__, + path, fp); + + oldfs = get_fs(); set_fs(get_ds()); + ret = writeFile(fp, buf, sz); + set_fs(oldfs); + closeFile(fp); + + DBG_8723A("%s writeFile, ret:%d\n", __func__, ret); + } else { + DBG_8723A("%s openFile path:%s Fail, ret:%d\n", + __func__, path, ret); + } + } else { + DBG_8723A("%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 memoryi + * 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; +} + +/* Open the file with @param path and wirte @param sz byte of + * data starting from @param buf into the file + * @param path the path of the file to open and write + * @param buf the starting address of the data to write into file + * @param sz how many bytes to write at most + * @return the byte we've written + */ +int rtw_store_to_file(char *path, u8 *buf, u32 sz) +{ + int ret = storeToFile(path, buf, sz); + return ret >= 0 ? ret : 0; +} + +u64 rtw_modular6423a(u64 x, u64 y) +{ + return do_div(x, y); +} + +u64 rtw_division6423a(u64 x, u64 y) +{ + do_div(x, y); + return x; +} + +/* rtw_cbuf_full23a - test if cbuf is full + * @cbuf: pointer of struct rtw_cbuf + * + * Returns: true if cbuf is full + */ +inline bool rtw_cbuf_full23a(struct rtw_cbuf *cbuf) +{ + return (cbuf->write == cbuf->read-1) ? true : false; +} + +/* rtw_cbuf_empty23a - test if cbuf is empty + * @cbuf: pointer of struct rtw_cbuf + * + * Returns: true if cbuf is empty + */ +inline bool rtw_cbuf_empty23a(struct rtw_cbuf *cbuf) +{ + return (cbuf->write == cbuf->read) ? true : false; +} + +/** + * rtw_cbuf_push23a - 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_push23a(struct rtw_cbuf *cbuf, void *buf) +{ + if (rtw_cbuf_full23a(cbuf)) + return _FAIL; + + if (0) + DBG_8723A("%s on %u\n", __func__, cbuf->write); + cbuf->bufs[cbuf->write] = buf; + cbuf->write = (cbuf->write+1)%cbuf->size; + + return _SUCCESS; +} + +/** + * rtw_cbuf_pop23a - 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_pop23a(struct rtw_cbuf *cbuf) +{ + void *buf; + if (rtw_cbuf_empty23a(cbuf)) + return NULL; + + if (0) + DBG_8723A("%s on %u\n", __func__, cbuf->read); + buf = cbuf->bufs[cbuf->read]; + cbuf->read = (cbuf->read+1)%cbuf->size; + + return buf; +} + +/** + * rtw_cbuf_alloc23a - 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_alloc23a(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; +} + +/** + * rtw_cbuf_free - free the given rtw_cbuf + * @cbuf: pointer of struct rtw_cbuf to free + */ +void rtw_cbuf_free(struct rtw_cbuf *cbuf) +{ + kfree(cbuf); +} |