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#include <linux/fs.h>
#include <asm/uaccess.h>
#include "wlan_includes.h"
#ifdef USE_MAC_FROM_RDA_NVRAM
#include <plat/md_sys.h>
#endif
#define WIFI_NVRAM_FILE_NAME "/data/misc/wifi/WLANMAC"
static int nvram_read(char *filename, char *buf, ssize_t len, int offset)
{
struct file *fd;
int retLen = -1;
mm_segment_t old_fs = get_fs();
set_fs(KERNEL_DS);
fd = filp_open(filename, O_WRONLY|O_CREAT, 0644);
if(IS_ERR(fd)){
printk("[wlan][nvram_read] : failed to open!!\n");
return -1;
}
do{
if ((fd->f_op == NULL) || (fd->f_op->read == NULL)){
printk("[wlan][nvram_read] : file can not be read!!\n");
break;
}
if (fd->f_pos != offset){
if (fd->f_op->llseek){
if(fd->f_op->llseek(fd, offset, 0) != offset){
printk("[wlan][nvram_read] : failed to seek!!\n");
break;
}
}else{
fd->f_pos = offset;
}
}
retLen = fd->f_op->read(fd, buf, len, &fd->f_pos);
}while(false);
filp_close(fd, NULL);
set_fs(old_fs);
return retLen;
}
static int nvram_write(char *filename, char *buf, ssize_t len, int offset)
{
struct file *fd;
int retLen = -1;
mm_segment_t old_fs = get_fs();
set_fs(KERNEL_DS);
fd = filp_open(filename, O_WRONLY|O_CREAT, 0644);
if(IS_ERR(fd)){
printk("[wlan][nvram_write] : failed to open!!\n");
return -1;
}
do{
if ((fd->f_op == NULL) || (fd->f_op->write == NULL)){
printk("[wlan][nvram_write] : file can not be write!!\n");
break;
}
if (fd->f_pos != offset){
if (fd->f_op->llseek){
if(fd->f_op->llseek(fd, offset, 0) != offset){
printk("[wlan][nvram_write] : failed to seek!!\n");
break;
}
}else{
fd->f_pos = offset;
}
}
retLen = fd->f_op->write(fd, buf, len, &fd->f_pos);
}while(false);
filp_close(fd, NULL);
set_fs(old_fs);
return retLen;
}
int wlan_read_mac_from_file(char* buf)
{
return nvram_read(WIFI_NVRAM_FILE_NAME, buf, 6, 0);
}
int wlan_write_mac_to_file(char * buf)
{
return nvram_write(WIFI_NVRAM_FILE_NAME, buf, 6, 0);
}
#ifdef USE_MAC_FROM_RDA_NVRAM
int wlan_read_mac_from_nvram(char *buf)
{
int ret;
struct msys_device *wlan_msys = NULL;
struct wlan_mac_info wlan_info;
struct client_cmd cmd_set;
wlan_msys = rda_msys_alloc_device();
if (!wlan_msys) {
WLAN_ERRP("nvram: can not allocate wlan_msys device\n");
ret = -ENOMEM;
goto err_handle_sys;
}
wlan_msys->module = SYS_GEN_MOD;
wlan_msys->name = "rda-wlan";
rda_msys_register_device(wlan_msys);
memset(&wlan_info, sizeof(wlan_info), 0);
cmd_set.pmsys_dev = wlan_msys;
cmd_set.mod_id = SYS_GEN_MOD;
cmd_set.mesg_id = SYS_GEN_CMD_GET_WIFI_INFO;
cmd_set.pdata = NULL;
cmd_set.data_size = 0;
cmd_set.pout_data = &wlan_info;
cmd_set.out_size = sizeof(wlan_info);
ret = rda_msys_send_cmd(&cmd_set);
if (ret) {
WLAN_ERRP("nvram:can not get wifi mac from nvram \n");
ret = -EBUSY;
goto err_handle_cmd;
}
if (wlan_info.activated != WIFI_MAC_ACTIVATED_FLAG) {
WLAN_ERRP("nvram:get invalid wifi mac address from nvram\n");
ret = -EINVAL;
goto err_invalid_mac;
}
memcpy(buf, wlan_info.mac_addr, ETH_ALEN);
WLAN_DBGLAP(WLAN_DA_MAIN, WLAN_DL_CRIT,
"nvram:get wifi mac address [%02x:%02x:%02x:%02x:%02x:%02x] from nvram success.\n",
buf[0], buf[1], buf[2],
buf[3], buf[4], buf[5]);
ret = 0; /* success*/
err_invalid_mac:
err_handle_cmd:
rda_msys_unregister_device(wlan_msys);
rda_msys_free_device(wlan_msys);
err_handle_sys:
return ret;
}
int wlan_write_mac_to_nvram(const char *buf)
{
int ret;
struct msys_device *wlan_msys = NULL;
struct wlan_mac_info wlan_info;
struct client_cmd cmd_set;
wlan_msys = rda_msys_alloc_device();
if (!wlan_msys) {
WLAN_ERRP("nvram: can not allocate wlan_msys device\n");
ret = -ENOMEM;
goto err_handle_sys;
}
wlan_msys->module = SYS_GEN_MOD;
wlan_msys->name = "rda-wlan";
rda_msys_register_device(wlan_msys);
memset(&wlan_info, sizeof(wlan_info), 0);
wlan_info.activated = WIFI_MAC_ACTIVATED_FLAG;
memcpy(wlan_info.mac_addr, buf, ETH_ALEN);
cmd_set.pmsys_dev = wlan_msys;
cmd_set.mod_id = SYS_GEN_MOD;
cmd_set.mesg_id = SYS_GEN_CMD_SET_WIFI_INFO;
cmd_set.pdata = &wlan_info;
cmd_set.data_size = sizeof(wlan_info);
cmd_set.pout_data = NULL;
cmd_set.out_size = 0;
ret = rda_msys_send_cmd(&cmd_set);
if (ret) {
WLAN_ERRP("nvram:can not set wifi mac to nvram \n");
ret = -EBUSY;
goto err_handle_cmd;
}
WLAN_DBGLAP(WLAN_DA_MAIN, WLAN_DL_CRIT,
"nvram:set wifi mac address [%02x:%02x:%02x:%02x:%02x:%02x] to nvram success.\n",
buf[0], buf[1], buf[2],
buf[3], buf[4], buf[5]);
ret = 0; /* success*/
err_handle_cmd:
rda_msys_unregister_device(wlan_msys);
rda_msys_free_device(wlan_msys);
err_handle_sys:
return ret;
}
#endif /*USE_MAC_FROM_RDA_NVRAM*/
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