126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
#include "type.h"
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#include "const.h"
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#include "protect.h"
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#include "string.h"
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#include "proc.h"
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#include "tty.h"
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#include "console.h"
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#include "global.h"
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#include "proto.h"
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#include "keyboard.h"
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#include "x86.h"
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#include "memman.h"
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#include "stdio.h"
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#include "serialport.h"
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int current_console; // 当前显示在屏幕上的console
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int tty_ok = 0;
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void tty_write(NTTY *tty, char *buf, int len);
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int tty_read(NTTY *tty, char *buf, int len);
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NTTY* cur_ntty;
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NTTY* ntty_table[NR_CONSOLES];
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static void write_default_tty(char ch) {
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cur_ntty->write(cur_ntty, ch);
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}
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inline NTTY* get_tty(const int nr_tty) {
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return ntty_table[nr_tty];
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}
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void init_tty_main()
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{
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NTTY *tty;
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for (int i = 0; i < 2; ++i)
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{
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// tty = &ntty_table[i];
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tty = (NTTY*)K_PHY2LIN(do_kmalloc(sizeof(NTTY)));
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tty->driver_type = 1; // vga
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// tty->input_buf = (void*)do_kmalloc(sizeof(keyboard_buf));
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// tty->output_buf = (void*)do_kmalloc(sizeof(vga_buf));
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tty->input_buf = (keyboard_buf*)K_PHY2LIN(do_kmalloc(sizeof(keyboard_buf)));
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tty->output_buf = (vga_buf*)K_PHY2LIN(do_kmalloc(sizeof(vga_buf)));
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vga_tty_init(tty);
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ps2_tty_init(tty);
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tty->write = vga_tty_write;
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tty->read = ps2_tty_read;
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tty->recvbuf = ps2_tty_recvbuf;
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ntty_table[i] = tty;
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}
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for (int i = 2; i < 3; ++ i) {
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tty = (NTTY*)K_PHY2LIN(do_kmalloc(sizeof(NTTY)));
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tty->driver_type = 2;
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tty->input_buf = (serial_buf*)K_PHY2LIN(do_kmalloc(sizeof(serial_buf)));
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tty->output_buf = NULL;
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serial_tty_init_i(tty);
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serial_tty_init_o(tty);
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tty->write = serial_tty_write;
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tty->read = serial_tty_read;
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tty->recvbuf = serial_tty_recvbuf;
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ntty_table[2] = tty;
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}
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cur_ntty = ntty_table[0];
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tty_ok = 1;
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simpleconsole_transfer(write_default_tty);
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kprintf("TTY initialized\n");
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}
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void task_tty()
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{
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// NTTY* p_tty;
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// for (p_tty = ntty_table; p_tty < ntty_table + 3; ++ p_tty) {
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// init_ntty(p_tty);
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// }
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volatile char serial_input;
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while (1)
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{
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yield();
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// vga_tty_flush(cur_ntty);
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// serial_input = read_serial();
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// vga_tty_write(get_tty(2), serial_input);
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// kprintf("%c", serial_input);
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}
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}
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/*****************************************************************************
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* tty_write
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****************************************************************************
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* 当fd=STD_OUT时，write()系统调用转发到此函数
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*****************************************************************************/
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void tty_write(NTTY *tty, char *buf, int len)
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{
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if (!tty_ok) {
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simpleconsole_write(buf, len);
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// while (--len >= 0) write_serial(*buf++);
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return;
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}
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else if (tty->driver_type == 1) {
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while (--len >= 0)
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{
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vga_tty_write(tty, *buf++);
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}
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if (cur_ntty == tty) vga_tty_flush(tty);
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}
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else if (tty->driver_type == 2) {
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while(--len >= 0) {
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serial_tty_write(tty, *buf++);
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}
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}
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}
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/*****************************************************************************
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* tty_read
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****************************************************************************
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* 当fd=STD_IN时，read()系统调用转发到此函数
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*****************************************************************************/
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int tty_read(NTTY *tty, char *buf, int len)
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{
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return tty->read(tty, buf, len);
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} |