diff options
Diffstat (limited to 'drivers/staging/rtl8188eu/os_dep/osdep_service.c')
| -rw-r--r-- | drivers/staging/rtl8188eu/os_dep/osdep_service.c | 815 |
1 files changed, 815 insertions, 0 deletions
diff --git a/drivers/staging/rtl8188eu/os_dep/osdep_service.c b/drivers/staging/rtl8188eu/os_dep/osdep_service.c new file mode 100644 index 000000000000..4e0bfb7e153b --- /dev/null +++ b/drivers/staging/rtl8188eu/os_dep/osdep_service.c @@ -0,0 +1,815 @@ +/****************************************************************************** + * + * 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. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA + * + * + ******************************************************************************/ + + +#define _OSDEP_SERVICE_C_ + +#include <osdep_service.h> +#include <drv_types.h> +#include <recv_osdep.h> +#include <linux/vmalloc.h> +#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; +} + +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); +} + +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; +} + +void *rtw_malloc2d(int h, int w, int size) +{ + int j; + + void **a = (void **)rtw_zmalloc(h*sizeof(void *) + h*w*size); + if (a == NULL) { + pr_info("%s: alloc memory fail!\n", __func__); + return NULL; + } + + for (j = 0; j < h; j++) + a[j] = ((char *)(a+h)) + j*w*size; + + return a; +} + +void rtw_mfree2d(void *pbuf, int h, int w, int size) +{ + kfree(pbuf); +} + +int _rtw_memcmp(void *dst, void *src, u32 sz) +{ +/* under Linux/GNU/GLibc, the return value of memcmp for two same + * mem. chunk is 0 */ + if (!(memcmp(dst, src, sz))) + return true; + else + return false; +} + +void _rtw_memset(void *pbuf, int c, u32 sz) +{ + memset(pbuf, c, sz); +} + +void _rtw_init_listhead(struct list_head *list) +{ + INIT_LIST_HEAD(list); +} + +/* +For the following list_xxx operations, +caller must guarantee the atomic context. +Otherwise, there will be racing condition. +*/ +u32 rtw_is_list_empty(struct list_head *phead) +{ + if (list_empty(phead)) + return true; + else + return false; +} + +void rtw_list_insert_head(struct list_head *plist, struct list_head *phead) +{ + list_add(plist, phead); +} + +void rtw_list_insert_tail(struct list_head *plist, struct list_head *phead) +{ + list_add_tail(plist, phead); +} + +/* +Caller must check if the list is empty before calling rtw_list_delete +*/ + +void _rtw_init_sema(struct semaphore *sema, int init_val) +{ + sema_init(sema, init_val); +} + +void _rtw_free_sema(struct semaphore *sema) +{ +} + +void _rtw_up_sema(struct semaphore *sema) +{ + up(sema); +} + +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_spinlock_init(spinlock_t *plock) +{ + spin_lock_init(plock); +} + +void _rtw_spinlock_free(spinlock_t *plock) +{ +} + +void _rtw_init_queue(struct __queue *pqueue) +{ + _rtw_init_listhead(&(pqueue->queue)); + _rtw_spinlock_init(&(pqueue->lock)); +} + +u32 _rtw_queue_empty(struct __queue *pqueue) +{ + return rtw_is_list_empty(&(pqueue->queue)); +} + +u32 rtw_end_of_queue_search(struct list_head *head, struct list_head *plist) +{ + if (head == plist) + return true; + else + return false; +} + +u32 rtw_get_current_time(void) +{ + return jiffies; +} + +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 returned by + * rtw_get_current_time */ +inline s32 rtw_get_passing_time_ms(u32 start) +{ + return rtw_systime_to_ms(jiffies-start); +} + +inline s32 rtw_get_time_interval_ms(u32 start, u32 end) +{ + return rtw_systime_to_ms(end-start); +} + +void rtw_sleep_schedulable(int ms) +{ + u32 delta; + + delta = (ms * HZ)/1000;/* ms) */ + if (delta == 0) + delta = 1;/* 1 ms */ + set_current_state(TASK_INTERRUPTIBLE); + if (schedule_timeout(delta) != 0) + return; +} + +void rtw_msleep_os(int ms) +{ + msleep((unsigned int)ms); +} + +void rtw_usleep_os(int us) +{ + if (1 < (us/1000)) + msleep(1); + else + msleep((us/1000) + 1); +} + +void rtw_mdelay_os(int ms) +{ + mdelay((unsigned long)ms); +} + +void rtw_udelay_os(int us) +{ + udelay((unsigned long)us); +} + +void rtw_yield_os(void) +{ + yield(); +} + +#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) +{ +} + +inline void ATOMIC_SET(ATOMIC_T *v, int i) +{ + atomic_set(v, i); +} + +inline int ATOMIC_READ(ATOMIC_T *v) +{ + return atomic_read(v); +} + +inline void ATOMIC_ADD(ATOMIC_T *v, int i) +{ + atomic_add(i, v); +} + +inline void ATOMIC_SUB(ATOMIC_T *v, int i) +{ + atomic_sub(i, v); +} + +inline void ATOMIC_INC(ATOMIC_T *v) +{ + atomic_inc(v); +} + +inline void ATOMIC_DEC(ATOMIC_T *v) +{ + atomic_dec(v); +} + +inline int ATOMIC_ADD_RETURN(ATOMIC_T *v, int i) +{ + return atomic_add_return(i, v); +} + +inline int ATOMIC_SUB_RETURN(ATOMIC_T *v, int i) +{ + return atomic_sub_return(i, v); +} + +inline int ATOMIC_INC_RETURN(ATOMIC_T *v) +{ + return atomic_inc_return(v); +} + +inline int ATOMIC_DEC_RETURN(ATOMIC_T *v) +{ + return atomic_dec_return(v); +} + +/* 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 __user *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 __user *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 __user 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 retrievefromfile(char *path, u8 __user *buf, u32 sz) +{ + int ret = -1; + mm_segment_t oldfs; + struct file *fp; + + if (path && buf) { + ret = openfile(&fp, path, O_RDONLY, 0); + if (0 == ret) { + DBG_88E("%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_88E("%s readfile, ret:%d\n", __func__, ret); + + } else { + DBG_88E("%s openfile path:%s Fail, ret:%d\n", __func__, + path, ret); + } + } else { + DBG_88E("%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 __user *buf, u32 sz) +{ + int ret = 0; + mm_segment_t oldfs; + struct file *fp; + + if (path && buf) { + ret = openfile(&fp, path, O_CREAT|O_WRONLY, 0666); + if (0 == ret) { + DBG_88E("%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_88E("%s writefile, ret:%d\n", __func__, ret); + + } else { + DBG_88E("%s openfile path:%s Fail, ret:%d\n", __func__, path, ret); + } + } else { + DBG_88E("%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 __user *buf, u32 sz) +{ + int ret = retrievefromfile(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 __user *buf, u32 sz) +{ + int ret = storetofile(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 = rtw_zvmalloc(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; + + rtw_vmfree(pnpi->priv, pnpi->sizeof_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 = padapter->pnetdev; + struct rereg_nd_name_data *rereg_priv; + int ret; + + if (!padapter) + goto error; + + 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) { + RT_TRACE(_module_hci_intfs_c_, _drv_err_, + ("register_netdev() failed\n")); + goto error; + } + rtw_proc_init_one(pnetdev); + return 0; +error: + return -1; +} + +u64 rtw_modular64(u64 x, u64 y) +{ + return do_div(x, y); +} + +u64 rtw_division64(u64 x, u64 y) +{ + do_div(x, y); + return x; +} + +void rtw_buf_free(u8 **buf, u32 *buf_len) +{ + *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 */ + 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 - 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 = 0; + cbuf->read = 0; + cbuf->size = size; + } + return cbuf; +} |