PUBLIC void task_hd()
{
MESSAGE msg;
init_hd();
while (true) {
send_recv(RECEIVE, ANY, &msg);
int src = msg.source;
switch (msg.type) {
case DEV_OPEN:
hd_identify(0);
//hd_open(msg.DEVICE);
break;
case DEV_CLOSE:
hd_close(msg.DEVICE);
break;
case DEV_READ:
case DEV_WRITE:
hd_rdwt(&msg);
break;
case DEV_IOCTL:
hd_ioctl(&msg);
break;
default:
kprintf("[KERNEL ERROR]HD driveer::unknown msg");
break;
}
send_recv(SEND, src, &msg);
}
}
/**
* Main loop of HD driver.
*
*****************************************************************************/
PUBLIC void task_hd()
{
MESSAGE msg;
init_hd();
while (1) {
send_recv(RECEIVE, ANY, &msg);
int src = msg.source;
switch (msg.type) {
case DEV_OPEN:
hd_open(msg.DEVICE);
break;
case DEV_CLOSE:
hd_close(msg.DEVICE);
break;
case DEV_READ:
case DEV_WRITE:
hd_rdwt(&msg);
break;
case DEV_IOCTL:
hd_ioctl(&msg);
break;
default:
dump_msg("HD driver::unknown msg", &msg);
spin("FS::main_loop (invalid msg.type)");
break;
}
send_recv(SEND, src, &msg);
}
}
PUBLIC void task_hd() {
MESSAGE msg;
init_hd();
printl("Task HD begins.\n");
while (TRUE) {
send_recv(RECEIVE, ANY, &msg);
int src = msg.source;
switch(msg.type) {
case DEV_OPEN:
/* 获得硬盘的信息 */
/* hd_identify(0); */
hd_open(msg.DEVICE);
break;
case DEV_CLOSE:
hd_close(msg.DEVICE);
break;
case DEV_READ:
case DEV_WRITE:
hd_rdwt(&msg);
break;
case DEV_IOCTL:
hd_ioctl(&msg);
break;
default:
panic("HD driver::unknown msg");
}
send_recv(SEND, src, &msg);
}
}
/*
功能：
处理硬盘相关请求的任务进程。初始化后，永久运行接收有关硬盘请求的信息
参数：
（无）
返回值：
（无）
*/
void task_hd(){
MESSAGE message;
#ifdef DEBUG_HD
printl("in task_hd\n");
#endif
//初始化硬盘
init_hd();
while(1){
reset_message(&message);
send_receive(RECEIVE,ANY,&message);
int src=message.source_pid;
switch(message.type){
case INFO_FS_OPEN:
hd_open(&message);
break;
case INFO_FS_CLOSE:
hd_close(&message);
break;
case INFO_FS_READ:
case INFO_FS_WRITE:
hd_rdwt(&message);
break;
case INFO_FS_IOCTL:
hd_ioctl(&message);
break;
case INFO_FS_DEVICE:
hd_device_info(&message);
break;
default:
//panic("unkonw message type(%d) in task_hd",src);
break;
}
#ifdef DEBUG_HD
printl("in task_hd\n");
#endif
/* message.source_pid=process2pid(p_process_ready); */
send_receive(SEND,src,&message);
}
}
//init process pid = 0;
static void start_kernel()
{
// init_trap();// define in kernel/start.c
init_clock(); //clock interrupt init
main_memory_end = (1<<20) + (EXT_MEM_K << 10);
main_memory_end &= 0xfffff000;
if(main_memory_end > 12 * 1024 * 1024) //内存大于6M时
{
buffer_memory_start = 3 * 1024 * 1024;
buffer_memory_end = 4 * 1024 * 1024;
}
else
{
buffer_memory_start = 3 * 1024 * 1024 - 512 * 1024;
buffer_memory_end = 3 * 1024 * 1024;
}
main_memory_start = buffer_memory_end; //主内存的起始地址 = 缓冲区末端
main_memory_start &= 0xfffff000;
printk("start memroy = %d\t end memory = %d\n",main_memory_start,main_memory_end);
// buffer_memory_end = (buffer_memory_end + BUFFER_SIZE) & (~BUFFER_SIZE)- 1; //align BUFFER_SIZE
init_buffer(buffer_memory_start,buffer_memory_end); //buffer init
paging_init(main_memory_start,main_memory_end);
init_mem(main_memory_start,main_memory_end); //memeory management init
init_hd(); //hard disk init
init_fs(); //filesystem init
// init_sock();
move_to_user_mode();
while(1){}
}
static void start_kernel()
{
init_clock(); //clock interrupt init
get_memsize(&main_memory_end);
main_memory_end &= 0xfffff000;
paging_init();
init_mem(); //memeory management init
buffer_init();
/* scheduler init */
init_sched();
init_hd(); //hard disk init
init_fs(); //filesystem init
init_task();
/*init_sock();*/
}
