static void init_duart_port(uart_state_t *port, int line)
{
if (!(port->flags & DUART_INITIALIZED)) {
port->line = line;
port->status = (u32 *)(IOADDR(A_DUART_CHANREG(line, R_DUART_STATUS)));
port->imr = (u32 *)(IOADDR(A_DUART_IMRREG(line)));
port->tx_hold = (u32 *)(IOADDR(A_DUART_CHANREG(line, R_DUART_TX_HOLD)));
port->rx_hold = (u32 *)(IOADDR(A_DUART_CHANREG(line, R_DUART_RX_HOLD)));
port->mode_1 = (u32 *)(IOADDR(A_DUART_CHANREG(line, R_DUART_MODE_REG_1)));
port->mode_2 = (u32 *)(IOADDR(A_DUART_CHANREG(line, R_DUART_MODE_REG_2)));
port->clk_sel = (u32 *)(IOADDR(A_DUART_CHANREG(line, R_DUART_CLK_SEL)));
port->cmd = (u32 *)(IOADDR(A_DUART_CHANREG(line, R_DUART_CMD)));
port->flags |= DUART_INITIALIZED;
}
}
/* Set up the driver and register it, register the 2 1250 UART interrupts. This
is called from tty_init, or as a part of the module init */
static int __init sb1250_duart_init(void)
{
int i;
sb1250_duart_driver = alloc_tty_driver(DUART_MAX_LINE);
if (!sb1250_duart_driver)
return -ENOMEM;
sb1250_duart_driver->owner = THIS_MODULE;
sb1250_duart_driver->name = "duart";
sb1250_duart_driver->devfs_name = "duart/";
sb1250_duart_driver->major = TTY_MAJOR;
sb1250_duart_driver->minor_start = SB1250_DUART_MINOR_BASE;
sb1250_duart_driver->type = TTY_DRIVER_TYPE_SERIAL;
sb1250_duart_driver->subtype = SERIAL_TYPE_NORMAL;
sb1250_duart_driver->init_termios = tty_std_termios;
sb1250_duart_driver->flags = TTY_DRIVER_REAL_RAW;
tty_set_operations(sb1250_duart_driver, &duart_ops);
for (i=0; i<DUART_MAX_LINE; i++) {
uart_state_t *port = uart_states + i;
if (!sb1250_duart_present[i])
continue;
init_duart_port(port, i);
spin_lock_init(&port->outp_lock);
duart_mask_ints(i, M_DUART_IMR_ALL);
if (request_irq(K_INT_UART_0+i, duart_int, 0, "uart", port)) {
panic("Couldn't get uart0 interrupt line");
}
__raw_writeq(M_DUART_RX_EN|M_DUART_TX_EN,
(u8 *) IOADDR(A_DUART_CHANREG(i, R_DUART_CMD)));
duart_set_cflag(i, DEFAULT_CFLAGS);
}
/* Interrupts are now active, our ISR can be called. */
if (tty_register_driver(sb1250_duart_driver)) {
printk(KERN_ERR "Couldn't register sb1250 duart serial driver\n");
put_tty_driver(sb1250_duart_driver);
return 1;
}
return 0;
}
static int get_serial_info(uart_state_t *us, struct serial_struct * retinfo) {
struct serial_struct tmp;
memset(&tmp, 0, sizeof(tmp));
tmp.type=PORT_SB1250;
tmp.line=us->line;
tmp.port=A_DUART_CHANREG(tmp.line,0);
tmp.irq=K_INT_UART_0 + tmp.line;
tmp.xmit_fifo_size=16; /* fixed by hw */
tmp.baud_base=5000000;
tmp.io_type=SERIAL_IO_MEM;
if (copy_to_user(retinfo,&tmp,sizeof(*retinfo)))
return -EFAULT;
return 0;
}
/* Set up the driver and register it, register the 2 1250 UART interrupts. This
is called from tty_init, or as a part of the module init */
static int __init sb1250_duart_init(void)
{
int i;
sb1250_duart_driver.magic = TTY_DRIVER_MAGIC;
sb1250_duart_driver.driver_name = "serial";
#ifdef CONFIG_DEVFS_FS
sb1250_duart_driver.name = "tts/%d";
#else
sb1250_duart_driver.name = "ttyS";
#endif
sb1250_duart_driver.major = TTY_MAJOR;
sb1250_duart_driver.minor_start = SB1250_DUART_MINOR_BASE;
sb1250_duart_driver.num = DUART_MAX_LINE;
sb1250_duart_driver.type = TTY_DRIVER_TYPE_SERIAL;
sb1250_duart_driver.subtype = SERIAL_TYPE_NORMAL;
sb1250_duart_driver.init_termios = tty_std_termios;
sb1250_duart_driver.flags = TTY_DRIVER_REAL_RAW;
sb1250_duart_driver.refcount = &duart_refcount;
sb1250_duart_driver.table = duart_table;
sb1250_duart_driver.termios = duart_termios;
sb1250_duart_driver.termios_locked = duart_termios_locked;
sb1250_duart_driver.open = duart_open;
sb1250_duart_driver.close = duart_close;
sb1250_duart_driver.write = duart_write;
sb1250_duart_driver.put_char = duart_put_char;
sb1250_duart_driver.write_room = duart_write_room;
sb1250_duart_driver.flush_chars = duart_flush_chars;
sb1250_duart_driver.chars_in_buffer = duart_chars_in_buffer;
sb1250_duart_driver.flush_buffer = duart_flush_buffer;
sb1250_duart_driver.ioctl = duart_ioctl;
sb1250_duart_driver.set_termios = duart_set_termios;
sb1250_duart_driver.stop = duart_stop;
sb1250_duart_driver.start = duart_start;
sb1250_duart_driver.hangup = duart_hangup;
sb1250_duart_driver.wait_until_sent = duart_wait_until_sent;
sb1250_duart_callout_driver = sb1250_duart_driver;
#ifdef CONFIG_DEVFS_FS
sb1250_duart_callout_driver.name = "cua/%d";
#else
sb1250_duart_callout_driver.name = "cua";
#endif
sb1250_duart_callout_driver.major = TTYAUX_MAJOR;
sb1250_duart_callout_driver.subtype = SERIAL_TYPE_CALLOUT;
for (i=0; i<DUART_MAX_LINE; i++) {
uart_state_t *port = uart_states + i;
if (!sb1250_duart_present[i])
continue;
init_duart_port(port, i);
spin_lock_init(&port->outp_lock);
duart_mask_ints(i, M_DUART_IMR_ALL);
if (request_irq(K_INT_UART_0+i, duart_int, 0, "uart", port)) {
panic("Couldn't get uart0 interrupt line");
}
out64(M_DUART_RX_EN|M_DUART_TX_EN,
IO_SPACE_BASE | A_DUART_CHANREG(i, R_DUART_CMD));
duart_set_cflag(i, DEFAULT_CFLAGS);
}
/* Interrupts are now active, our ISR can be called. */
if (tty_register_driver(&sb1250_duart_driver)) {
printk(KERN_ERR "Couldn't register sb1250 duart serial driver\n");
}
if (tty_register_driver(&sb1250_duart_callout_driver)) {
printk(KERN_ERR "Couldn't register sb1250 duart callout driver\n");
}
return 0;
}
