void ADSL_DisableIRQ1_2(void)
{
register UINT32 temp;
if (pF2_IRQ1_ISR == 0 && pF2_IRQ2_ISR == 0)
return;
temp = intLock();
#ifdef LEVEL_MODE_ADSL
DisableInterruptCount++;
if (pF2_IRQ1_ISR)
SetGPIOIntEnable(GPIOINT_F2_IRQ1, 0);
if (pF2_IRQ2_ISR)
SetGPIOIntEnable(GPIOINT_F2_IRQ2, 0);
/* Indicate start of critical section for debug */
SetGPIOF2PCS(TRUE);
intUnlock(temp);
#else /* LEVEL_MODE_ADSL */
oldValue[DisableInterruptCount]=temp;
if (DisableInterruptCount == 0)
/* Indicate start of critical section for debug */
SetGPIOF2PCS(TRUE);
DisableInterruptCount++;
#endif /* LEVEL_MODE_ADSL */
}
void ADSL_EnableIRQ1_2(void)
{
register UINT32 temp;
if (pF2_IRQ1_ISR == 0 && pF2_IRQ2_ISR == 0)
return;
temp= intLock();
#ifdef LEVEL_MODE_ADSL
if (DisableInterruptCount)
DisableInterruptCount--;
if (DisableInterruptCount == 0)
{
/* Indicate out of critical section for debug */
SetGPIOF2PCS(FALSE);
if (pF2_IRQ1_ISR)
SetGPIOIntEnable(GPIOINT_F2_IRQ1, 1);
if (pF2_IRQ2_ISR)
SetGPIOIntEnable(GPIOINT_F2_IRQ2, 1);
}
intUnlock(temp);
#else /* LEVEL_MODE_ADSL */
if (DisableInterruptCount == 0)
{
intUnlock(temp);
return;
}
DisableInterruptCount--;
if (DisableInterruptCount == 0)
/* Indicate out of critical section for debug */
SetGPIOF2PCS(FALSE);
/* Allow for nesting, push values onto a stack */
intUnlock(temp);
intUnlock(oldValue[DisableInterruptCount]);
#endif /* LEVEL_MODE_ADSL */
}
/*
* This routine is called whenever a serial port is opened. It
* enables interrupts for a serial port, linking in its S structure into
* the IRQ chain. It also performs the serial-specific
* initialization for the tty structure.
*/
int rs_open(struct tty_struct *tty, struct file * filp)
{
int retval, line;
struct cnxt_serial *info;
line = MINOR(tty->device) - tty->driver.minor_start;
if (line != 0) /* we have exactly one */
return -ENODEV;
info = &uart_info;
if (serial_paranoia_check(info, tty->device, "rs_open"))
return -ENODEV;
info->count++;
tty->driver_data = info;
info->tty = tty;
/*
* Start up serial port
*/
retval = startup(info);
if (retval)
return retval;
retval = block_til_ready(tty, filp, info);
if (retval) {
printk("rs_open returning after block_til_ready with %d\n",
retval);
return retval;
}
if ((info->count == 1) && (info->flags & S_SPLIT_TERMIOS)) {
if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
*tty->termios = info->normal_termios;
else
*tty->termios = info->callout_termios;
change_speed(info);
}
info->session = current->session;
info->pgrp = current->pgrp;
// Enable GPIO interrupt line for console uart
SetGPIOIntEnable(GPIOINT_UART1, IRQ_ON);
return 0;
}
/* Showtime code registers callbacks */
void SetF2Interrupts(void (*(pIRQ1))(void *),void (*(pIRQ2))(void *), void *pContext)
{
UINT32 OldLevel = 0;
OldLevel = intLock();
pFalconContext = pContext ;
if (pIRQ1)
{
pF2_IRQ1_ISR= pIRQ1;
GPIO_SetGPIOIRQRoutine(GPIOINT_F2_IRQ1, GPIOB10_Handler);
SetGPIOInputEnable( GPIOINT_F2_IRQ1, GP_INPUTON );
SetGPIOIntEnable(GPIOINT_F2_IRQ1, IRQ_OFF);
#ifdef LEVEL_MODE_ADSL
SetGPIOIntMode (GPIOINT_F2_IRQ1, GP_IRQ_MODE_LEVEL);
#endif
SetGPIOIntPolarity (GPIOINT_F2_IRQ1, GP_IRQ_POL_NEGATIVE);
SetGPIOIntEnable(GPIOINT_F2_IRQ1, IRQ_ON);
}
else
{
SetGPIOIntEnable(GPIOINT_F2_IRQ1, IRQ_OFF);
ClearGPIOIntStatus(GPIOINT_F2_IRQ1);
pF2_IRQ1_ISR= pIRQ1;
}
if (pIRQ2)
{
pF2_IRQ2_ISR= pIRQ2;
GPIO_SetGPIOIRQRoutine(GPIOINT_F2_IRQ2, GPIOB11_Handler);
SetGPIOInputEnable( GPIOINT_F2_IRQ2, GP_INPUTON );
SetGPIOIntEnable(GPIOINT_F2_IRQ2, IRQ_OFF);
#ifdef LEVEL_MODE_ADSL
SetGPIOIntMode (GPIOINT_F2_IRQ2, GP_IRQ_MODE_LEVEL);
#endif
SetGPIOIntPolarity (GPIOINT_F2_IRQ2, GP_IRQ_POL_NEGATIVE);
SetGPIOIntEnable(GPIOINT_F2_IRQ2, IRQ_ON);
}
else
{
SetGPIOIntEnable(GPIOINT_F2_IRQ2, IRQ_OFF);
ClearGPIOIntStatus(GPIOINT_F2_IRQ2);
pF2_IRQ2_ISR= pIRQ2;
}
intUnlock(OldLevel);
}
static int __init
rs_cnxt_init(void)
{
int flags;
struct cnxt_serial *info;
/* Setup base handler, and timer table. */
init_bh(SERIAL_BH, do_serial_bh);
/* Initialize the tty_driver structure */
memset(&serial_driver, 0, sizeof(struct tty_driver));
serial_driver.magic = TTY_DRIVER_MAGIC;
serial_driver.name = "ttyS";
serial_driver.major = TTY_MAJOR;
serial_driver.minor_start = 64;
serial_driver.num = 1;
serial_driver.type = TTY_DRIVER_TYPE_SERIAL;
serial_driver.subtype = SERIAL_TYPE_NORMAL;
serial_driver.init_termios = tty_std_termios;
serial_driver.init_termios.c_cflag =
B57600 | CS8 | CREAD | HUPCL | CLOCAL;
serial_driver.flags = TTY_DRIVER_REAL_RAW;
serial_driver.refcount = &serial_refcount;
serial_driver.table = serial_table;
serial_driver.termios = serial_termios;
serial_driver.termios_locked = serial_termios_locked;
serial_driver.open = rs_open;
serial_driver.close = rs_close;
serial_driver.write = rs_write;
serial_driver.put_char = rs_put_char;
serial_driver.flush_chars = rs_flush_chars;
serial_driver.write_room = rs_write_room;
serial_driver.chars_in_buffer = rs_chars_in_buffer;
serial_driver.flush_buffer = rs_flush_buffer;
serial_driver.ioctl = rs_ioctl;
serial_driver.throttle = rs_throttle;
serial_driver.unthrottle = rs_unthrottle;
serial_driver.set_termios = rs_set_termios;
serial_driver.stop = rs_stop;
serial_driver.start = rs_start;
serial_driver.hangup = rs_hangup;
serial_driver.set_ldisc = rs_set_ldisc;
/*
* The callout device is just like normal device except for
* major number and the subtype code.
*/
callout_driver = serial_driver;
callout_driver.name = "cua";
callout_driver.major = TTYAUX_MAJOR;
callout_driver.subtype = SERIAL_TYPE_CALLOUT;
if (tty_register_driver(&serial_driver))
panic("Couldn't register serial driver\n");
if (tty_register_driver(&callout_driver))
panic("Couldn't register callout driver\n");
save_flags(flags); cli();
info = &uart_info;
info->magic = SERIAL_MAGIC;
info->uart = (struct uart_regs*)UART0_Base_Addr;
info->port = UART0_Base_Addr;
info->tty = 0;
info->irq = CNXT_INT_LVL_GPIO;
info->custom_divisor = 16;
info->close_delay = 50;
info->closing_wait = 3000;
info->x_char = 0;
info->event = 0;
info->count = 0;
info->blocked_open = 0;
info->tqueue.routine = do_softint;
info->tqueue.data = info;
info->tqueue_hangup.routine = do_serial_hangup;
info->tqueue_hangup.data = info;
info->callout_termios =callout_driver.init_termios;
info->normal_termios = serial_driver.init_termios;
init_waitqueue_head(&info->open_wait);
init_waitqueue_head(&info->close_wait);
info->line = 0;
info->is_cons = 1; /* Means shortcuts work */
printk("%s%d at 0x%08x (irq = %d)", serial_driver.name, info->line,
info->port, info->irq);
printk(" is a 16c550 UART\n");
printk("info = %08x\n",info);
#if DEBUG_CONSOLE_ON_UART_2
SetGPIOIntEnable( GPIO25, IRQ_OFF );
SetGPIOInputEnable( GPIO25, GP_INPUTOFF );
#endif
SetGPIOIntEnable(GPIOINT_UART1, IRQ_OFF);
SetGPIODir( GPIOINT_UART1, GP_INPUT );
SetGPIOIntPolarity (GPIOINT_UART1, GP_IRQ_POL_POSITIVE);
SetGPIOInputEnable( GPIOINT_UART1, GP_INPUTON );
GPIO_SetGPIOIRQRoutine(GPIOINT_UART1, GPIOB25_Handler);
SetGPIOIntEnable(GPIOINT_UART1, IRQ_ON);
restore_flags(flags);
return 0;
}