MAILBOX_LOCAL int mailbox_request_channel(
struct mb *mb,
struct mb_buff ** mb_buf,
unsigned int mailcode)
{
struct mb_head *head = MAILBOX_NULL;
struct mb_queue *queue = MAILBOX_NULL;
struct mb_buff *mbuff = MAILBOX_NULL;
int ret_val = MAILBOX_OK;
*mb_buf = MAILBOX_NULL;
mbuff = mailbox_get_channel_handle(mb, mailcode);
if (MAILBOX_NULL == mbuff) {
ret_val = (int)MAILBOX_ERRO;
goto request_erro;/*lint --e{801}*/
}
/*通过判断通道保护字，检查通道有没有初始化*/
head = (struct mb_head*)mbuff->config->head_addr;
if (( (MAILBOX_PROTECT1 != head->ulProtectWord1) )
|| (MAILBOX_PROTECT2 != head->ulProtectWord2)
||(MAILBOX_PROTECT1 != head->ulProtectWord3)
|| (MAILBOX_PROTECT2 != head->ulProtectWord4)) {
/*保护字不正确，说明邮箱未初始化，或者内存被踩，报错。*/
ret_val = mailbox_logerro_p1(MAILBOX_NOT_READY, mailcode);
goto request_erro;/*lint --e{801}*/
}
if(mailbox_get_src_id(mailcode) == mb->local_id) {
/* 不允许在中断中发邮件*/
if (MAILBOX_TRUE == mailbox_int_context()) {
//TODO:接下来的开发(IFC for 低功耗)可能需要支持在中断中发送邮件，这里就需要锁中断。
ret_val = mailbox_logerro_p1(MAILBOX_ERR_GUT_SEND_MAIL_IN_INT_CONTEXT, mailcode);
goto request_erro;/*lint --e{801}*/
} else {
if (MAILBOX_OK != mailbox_mutex_lock(&mbuff->mutex)) {
/*非中断发送，需要资源保护，获取当前通道资源。*/
ret_val = mailbox_logerro_p1(MAILBOX_CRIT_GUT_MUTEX_LOCK_FAILED, mailcode);
goto request_erro;/*lint --e{801}*/
}
}
}
mbuff->mailcode = mailcode;
/*共享内存队列，需要依据邮箱头信息对队列操作符进行填充*/
queue = &mbuff->mail_queue;
queue->front = queue->base + head->ulFront * sizeof(unsigned int);
queue->rear = queue->base + head->ulRear * sizeof(unsigned int);
mbuff->mb = mb;
*mb_buf = mbuff;
return MAILBOX_OK;
request_erro:
//mailbox_out(("###mailbox_request_channel ERR!"RT));
return ret_val;
}
/*****************************************************************************
函 数 名 : mailbox_release_channel
接口类型 : 对内接口
功能描述 : 关闭邮箱，释放资源。
输入参数 : mb_buff* mbuff - 邮箱通道缓存操作符
输出参数 : 无
返 回 值 : 邮箱关闭是否成功
调用函数 :
被调函数 :
修改历史 :
1.日 期 : 2012年9月27日
作 者 : 莫南 00176101
修改内容 : 新生成函数
*****************************************************************************/
MAILBOX_LOCAL long mailbox_release_channel(struct mb *mb,
struct mb_buff *mbuff)
{
unsigned long channel_id = mbuff->channel_id;
/*需要区分是读还是写*/
if (mb->local_id == mailbox_get_src_id(channel_id)) {
if (MAILBOX_TRUE == mailbox_int_context()) {
/*TODO:接下来的开发(IFC for 低功耗)可能需要支持在中断中发送邮件，
这里就需要解锁中断。*/
} else {
mailbox_mutex_unlock(&mbuff->mutex);
}
}
return MAILBOX_OK;
}
MAILBOX_EXTERN unsigned long mailbox_send_msg(
unsigned long mailcode,
void *data,
unsigned long length)
{
unsigned long ret_val;
unsigned long try_go_on = MAILBOX_TRUE;
unsigned long try_times = 0;
extern bool hifi_is_loaded(void);
if (!hifi_is_loaded()) {
return MAILBOX_TARGET_NOT_READY;
}
ret_val= BSP_CPU_StateGet(mailbox_get_dst_id(mailcode));
if(!ret_val) {
return MAILBOX_TARGET_NOT_READY;
}
ret_val = mailbox_try_send_msg(mailcode, data, length);
if (MAILBOX_FALSE == mailbox_int_context()) {
/*发送满等待轮询尝试*/
while (MAILBOX_FULL == ret_val) {
mailbox_delivery(mailbox_get_channel_id(mailcode));
try_go_on = mailbox_scene_delay(MAILBOX_DELAY_SCENE_MSG_FULL, &try_times);
if (MAILBOX_TRUE == try_go_on) {
ret_val = mailbox_try_send_msg(mailcode, data, length);
} else {
break;
}
}
}
if (MAILBOX_OK != ret_val) {
mailbox_show(mailcode,0);
mailbox_assert(ret_val);
if (MAILBOX_FULL != ret_val) {
ret_val = MAILBOX_ERRO;
}
return ret_val;
}
return ret_val;
}
/*****************************************************************************
函 数 名 : mailbox_send_msg
功能描述 : 提供给各模块进行核间数据发送的接口。
输入参数 :
unsigned int mailcode -- 邮件的id号, 逻辑通道号。
unsigned char *data -- 指向邮件数据的指针。
unsigned int length/byte -- 数据或者消息总长度 字节为单位。
输出参数 : 无
返 回 值 : unsigned int
成功OK, 异常返回值
调用函数 :
被调函数 :
修改历史 :
1.日 期 : 2012年9月28日
作 者 : 莫南 00176101
修改内容 : 新生成函数
*****************************************************************************/
MAILBOX_EXTERN unsigned int mailbox_send_msg(
unsigned int mailcode,
void *data,
unsigned int length)
{
int ret_val = MAILBOX_OK;
unsigned int try_go_on = MAILBOX_TRUE;
int try_times = 0;
ret_val= BSP_CPU_StateGet(mailbox_get_dst_id(mailcode));
if(!ret_val)
{
return MAILBOX_TARGET_NOT_READY;
}
ret_val = (int)mailbox_try_send_msg(mailcode, data, length);
if (MAILBOX_FALSE == mailbox_int_context()) {
/*发送满等待轮询尝试*/
while ((int)MAILBOX_FULL == ret_val) {
mailbox_delivery(mailbox_get_channel_id(mailcode));
try_go_on = (unsigned int)mailbox_scene_delay(MAILBOX_DELAY_SCENE_MSG_FULL, &try_times);
if (MAILBOX_TRUE == try_go_on) {
ret_val = (int)mailbox_try_send_msg(mailcode, data, length);
} else {
break;
}
}
}
if (MAILBOX_OK != ret_val) {
/*mailbox_show(mailcode,0);*/
/*mailbox_assert(ret_val);*/
if ((int)MAILBOX_FULL != ret_val) {
ret_val = (int)MAILBOX_ERRO;
}
return (unsigned int)ret_val;
}
return (unsigned int)ret_val;
}
MAILBOX_LOCAL long mailbox_request_channel(
struct mb *mb,
struct mb_buff ** mb_buf,
unsigned long mailcode)
{
struct mb_head *head = MAILBOX_NULL;
struct mb_queue *queue = MAILBOX_NULL;
struct mb_buff *mbuff = MAILBOX_NULL;
long ret_val = MAILBOX_OK;
mailbox_dpm_device_get();
*mb_buf = MAILBOX_NULL;
mbuff = mailbox_get_channel_handle(mb, mailcode);
if (MAILBOX_NULL == mbuff) {
ret_val = MAILBOX_ERRO;
goto request_erro;
}
/*通过判断通道保护字，检查通道有没有初始化*/
head = (struct mb_head*)mbuff->config->head_addr;
if (( (MAILBOX_PROTECT1 != head->ulProtectWord1) )
|| (MAILBOX_PROTECT2 != head->ulProtectWord2)
||(MAILBOX_PROTECT1 != head->ulProtectWord3)
|| (MAILBOX_PROTECT2 != head->ulProtectWord4)) {
#if 1/*k3 modify 保护字不正确重新初始化一下邮箱头，不要return影响通信流程，后续再找根因*/
/*保护字不正确，说明邮箱未初始化，或者内存被踩，报错。*/
/* do not check cause hifi maybe not pwr on when the first ipc message send */
mailbox_init_mem(mbuff->config);
mailbox_logerro_p1(MAILBOX_NOT_READY, mailcode);
#endif
}
if(mailbox_get_src_id(mailcode) == mb->local_id) {
/* 不允许在中断中发邮件*/
if (MAILBOX_TRUE == mailbox_int_context()) {
//TODO:接下来的开发(IFC for 低功耗)可能需要支持在中断中发送邮件，这里就需要锁中断。
ret_val = mailbox_logerro_p1(MAILBOX_ERR_GUT_SEND_MAIL_IN_INT_CONTEXT, mailcode);
goto request_erro;
} else {
if (MAILBOX_OK != mailbox_mutex_lock(&mbuff->mutex)) {
/*非中断发送，需要资源保护，获取当前通道资源。*/
ret_val = mailbox_logerro_p1(MAILBOX_CRIT_GUT_MUTEX_LOCK_FAILED, mailcode);
goto request_erro;
}
}
}
mbuff->mailcode = mailcode;
/*共享内存队列，需要依据邮箱头信息对队列操作符进行填充*/
queue = &mbuff->mail_queue;
queue->front = queue->base + head->ulFront * sizeof(unsigned long);
queue->rear = queue->base + head->ulRear * sizeof(unsigned long);
mbuff->mb = mb;
*mb_buf = mbuff;
return MAILBOX_OK;
request_erro:
mailbox_out(("###mailbox_request_channel ERR! \n"));
mailbox_dpm_device_put();
return ret_val;
}
