/*****************************************************************************
函 数 名 : mailbox_init_all_handle
接口类型 : 对内接口
功能描述 : 初始化邮箱的所有通道句柄
输入参数 : struct mb *mb -- 邮箱总句柄
struct mb_cfg *config -- 邮箱通道的全局配置表。
unsigned long cpu_id -- 注册此通道的CPU号。
输出参数 : 无
返 回 值 : 邮箱操作句柄
调用函数 :
被调函数 :
修改历史 :
1.日 期 : 2012年9月7日
作 者 : 莫南 00176101
修改内容 : 新生成函数
*****************************************************************************/
MAILBOX_LOCAL long mailbox_init_all_handle(
struct mb *mb,
struct mb_cfg *config,
unsigned long cpu_id)
{
struct mb_queue *queue = MAILBOX_NULL;
unsigned long direct= MIALBOX_DIRECTION_INVALID; /*标记当前邮箱通道
是不是本核相关的有效通道*/
unsigned long ret_val = MAILBOX_OK;
struct mb_link *send_link = MAILBOX_NULL;/*指向主结构体的发送通道
数组基地址*/
struct mb_link *recv_link = MAILBOX_NULL; /*指向主结构体的接收通道
数组基地址*/
struct mb_buff *mbuf_prob = &g_mailbox_channel_handle_pool[0];
struct mb_cb *cb_prob = &g_mailbox_user_cb_pool[0];
struct mb_buff *mbuf_cur = MAILBOX_NULL; /*指向正在处理的邮箱通道*/
unsigned long channel_sum = 0;
unsigned long use_sum = 0;
unsigned long src_id = 0;
unsigned long dst_id = 0;
unsigned long carrier_id = 0;
unsigned long use_max = 0;
send_link = mb->send_tbl;
recv_link = mb->recv_tbl;
/*第二次循环对每个通道句柄分配空间,并赋值。(这段代码变量太多，不方便拆开另建函数)*/
/*初始化每个邮箱的控制句柄*/
while (MAILBOX_MAILCODE_INVALID != config->butt_id) {
direct = MIALBOX_DIRECTION_INVALID;
src_id = mailbox_get_src_id(config->butt_id);
dst_id = mailbox_get_dst_id(config->butt_id);
carrier_id = mailbox_get_carrier_id(config->butt_id);
use_max = mailbox_get_use_id(config->butt_id);
/*检查是不是本CPU发送通道*/
if (cpu_id == src_id) {
direct = MIALBOX_DIRECTION_SEND;
/*没有分配空间则分配空间*/
if (MAILBOX_NULL == send_link[dst_id].channel_buff) {
send_link[dst_id].channel_buff = mbuf_prob;
mbuf_prob += (send_link[dst_id].carrier_butt);
channel_sum += (send_link[dst_id].carrier_butt);
if (channel_sum > MAILBOX_CHANNEL_NUM) {
return mailbox_logerro_p1(MAILBOX_CRIT_GUT_INIT_CHANNEL_POOL_TOO_SMALL,
channel_sum);
}
}
mbuf_cur = &send_link[dst_id].channel_buff[carrier_id];
}
/*检查是不是本CPU接收通道*/
if (cpu_id == dst_id) {
direct = MIALBOX_DIRECTION_RECEIVE;
/*没有分配空间则分配空间*/
if (MAILBOX_NULL == recv_link[src_id].channel_buff) {
recv_link[src_id].channel_buff = mbuf_prob;
mbuf_prob += (recv_link[src_id].carrier_butt);
channel_sum += (recv_link[src_id].carrier_butt);
if (channel_sum > MAILBOX_CHANNEL_NUM) {
return mailbox_logerro_p1(MAILBOX_CRIT_GUT_INIT_CHANNEL_POOL_TOO_SMALL,
channel_sum);
}
}
mbuf_cur = &recv_link[src_id].channel_buff[carrier_id];
/*1。为邮件注册回调函数申请空间*/
mbuf_cur->read_cb = cb_prob;
cb_prob += use_max;
use_sum += use_max;
if (use_sum > MAILBOX_USER_NUM) {
return mailbox_logerro_p1(MAILBOX_CRIT_GUT_INIT_USER_POOL_TOO_SMALL, use_sum);
}
/*3.注册邮箱线程回调接口，用于获取共享内存邮箱数据的处理*/
ret_val = mailbox_process_register(mailbox_get_channel_id(config->butt_id),
mailbox_read_channel, mbuf_cur);
/*4.初始化邮箱共享内存，设置标志位。*/
ret_val |= mailbox_init_mem(config);
}
if ((MIALBOX_DIRECTION_INVALID != direct ) && (MAILBOX_NULL != mbuf_cur)) {
/*给控制句柄赋予邮箱ID号*/
mbuf_cur->channel_id = mailbox_get_channel_id(config->butt_id);
mbuf_cur->seq_num = MAILBOX_SEQNUM_START;
#ifdef MAILBOX_OPEN_MNTN
mbuf_cur->mntn.peak_traffic_left = MAILBOX_QUEUE_LEFT_INVALID;
mbuf_cur->mntn.mbuff = mbuf_cur;
#endif
/*给邮箱配置物理资源*/
mbuf_cur->config = config;
/*初始化通道资源*/
queue = &(mbuf_cur->mail_queue);
/*初始化邮箱通道的环形队列控制符，以下两项是初始化以后不会再变化的。*/
queue->length = mbuf_cur->config->data_size -
(MAILBOX_DATA_LEN_PROTECT_NUM * MAILBOX_PROTECT_LEN);
queue->base = mbuf_cur->config->data_addr +
(MAILBOX_DATA_BASE_PROTECT_NUM * MAILBOX_PROTECT_LEN);
/*把此通道注册到具体平台*/
ret_val = mailbox_channel_register(mailbox_get_channel_id(config->butt_id), /*lint !e539*/
config->int_src,
mailbox_get_dst_id(config->butt_id),
direct,
&mbuf_cur->mutex);
}
config++;
}
/*检查内存池大小是否刚好,如果报错，请检查宏设置是否匹配:
这里检查下面三个数组的空间是否适配。
g_mailbox_global_cfg_tbl[];
g_mailbox_channel_handle_pool[MAILBOX_CHANNEL_NUM];
g_mailbox_user_cb_pool[MAILBOX_USER_NUM];
*/
if((unsigned long)MAILBOX_CHANNEL_NUM != channel_sum ) {
ret_val = mailbox_logerro_p1(MAILBOX_ERR_GUT_INIT_CHANNEL_POOL_TOO_LARGE,
(MAILBOX_CHANNEL_NUM<<16) | channel_sum);
}
if(MAILBOX_USER_NUM != use_sum) {
ret_val = mailbox_logerro_p1(MAILBOX_ERR_GUT_INIT_USER_POOL_TOO_LARGE, use_sum);
}
return 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;
}
