/*
* neo_param()
* Send any/all changes to the line to the UART.
*/
static void neo_param(struct jsm_channel *ch)
{
u8 lcr = 0;
u8 uart_lcr, ier;
u32 baud;
int quot;
struct jsm_board *bd;
bd = ch->ch_bd;
if (!bd)
return;
/*
* If baud rate is zero, flush queues, and set mval to drop DTR.
*/
if ((ch->ch_c_cflag & (CBAUD)) == 0) {
ch->ch_r_head = ch->ch_r_tail = 0;
ch->ch_e_head = ch->ch_e_tail = 0;
ch->ch_w_head = ch->ch_w_tail = 0;
neo_flush_uart_write(ch);
neo_flush_uart_read(ch);
ch->ch_flags |= (CH_BAUD0);
ch->ch_mostat &= ~(UART_MCR_RTS | UART_MCR_DTR);
neo_assert_modem_signals(ch);
ch->ch_old_baud = 0;
return;
} else if (ch->ch_custom_speed) {
baud = ch->ch_custom_speed;
if (ch->ch_flags & CH_BAUD0)
ch->ch_flags &= ~(CH_BAUD0);
} else {
int i;
unsigned int cflag;
static struct {
unsigned int rate;
unsigned int cflag;
} baud_rates[] = {
{ 921600, B921600 },
{ 460800, B460800 },
{ 230400, B230400 },
{ 115200, B115200 },
{ 57600, B57600 },
{ 38400, B38400 },
{ 19200, B19200 },
{ 9600, B9600 },
{ 4800, B4800 },
{ 2400, B2400 },
{ 1200, B1200 },
{ 600, B600 },
{ 300, B300 },
{ 200, B200 },
{ 150, B150 },
{ 134, B134 },
{ 110, B110 },
{ 75, B75 },
{ 50, B50 },
};
cflag = C_BAUD(ch->uart_port.state->port.tty);
baud = 9600;
for (i = 0; i < ARRAY_SIZE(baud_rates); i++) {
if (baud_rates[i].cflag == cflag) {
baud = baud_rates[i].rate;
break;
}
}
if (ch->ch_flags & CH_BAUD0)
ch->ch_flags &= ~(CH_BAUD0);
}
if (ch->ch_c_cflag & PARENB)
lcr |= UART_LCR_PARITY;
if (!(ch->ch_c_cflag & PARODD))
lcr |= UART_LCR_EPAR;
/*
* Not all platforms support mark/space parity,
* so this will hide behind an ifdef.
*/
#ifdef CMSPAR
if (ch->ch_c_cflag & CMSPAR)
lcr |= UART_LCR_SPAR;
#endif
if (ch->ch_c_cflag & CSTOPB)
lcr |= UART_LCR_STOP;
switch (ch->ch_c_cflag & CSIZE) {
case CS5:
lcr |= UART_LCR_WLEN5;
break;
case CS6:
lcr |= UART_LCR_WLEN6;
break;
case CS7:
lcr |= UART_LCR_WLEN7;
break;
case CS8:
default:
lcr |= UART_LCR_WLEN8;
break;
}
ier = readb(&ch->ch_neo_uart->ier);
uart_lcr = readb(&ch->ch_neo_uart->lcr);
if (baud == 0)
baud = 9600;
quot = ch->ch_bd->bd_dividend / baud;
if (quot != 0) {
ch->ch_old_baud = baud;
writeb(UART_LCR_DLAB, &ch->ch_neo_uart->lcr);
writeb((quot & 0xff), &ch->ch_neo_uart->txrx);
writeb((quot >> 8), &ch->ch_neo_uart->ier);
writeb(lcr, &ch->ch_neo_uart->lcr);
}
/*
* neo_param()
* Send any/all changes to the line to the UART.
*/
static void neo_param(struct tty_struct *tty)
{
unsigned char lcr = 0;
unsigned char uart_lcr = 0;
unsigned char ier = 0;
unsigned char uart_ier = 0;
uint baud = 9600;
int quot = 0;
struct dgnc_board *bd;
struct channel_t *ch;
struct un_t *un;
if (!tty || tty->magic != TTY_MAGIC)
return;
un = (struct un_t *)tty->driver_data;
if (!un || un->magic != DGNC_UNIT_MAGIC)
return;
ch = un->un_ch;
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
return;
bd = ch->ch_bd;
if (!bd || bd->magic != DGNC_BOARD_MAGIC)
return;
/*
* If baud rate is zero, flush queues, and set mval to drop DTR.
*/
if ((ch->ch_c_cflag & (CBAUD)) == 0) {
ch->ch_r_head = 0;
ch->ch_r_tail = 0;
ch->ch_e_head = 0;
ch->ch_e_tail = 0;
ch->ch_w_head = 0;
ch->ch_w_tail = 0;
neo_flush_uart_write(ch);
neo_flush_uart_read(ch);
/* The baudrate is B0 so all modem lines are to be dropped. */
ch->ch_flags |= (CH_BAUD0);
ch->ch_mostat &= ~(UART_MCR_RTS | UART_MCR_DTR);
neo_assert_modem_signals(ch);
ch->ch_old_baud = 0;
return;
} else if (ch->ch_custom_speed) {
baud = ch->ch_custom_speed;
/* Handle transition from B0 */
if (ch->ch_flags & CH_BAUD0) {
ch->ch_flags &= ~(CH_BAUD0);
/*
* Bring back up RTS and DTR...
* Also handle RTS or DTR toggle if set.
*/
if (!(ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE))
ch->ch_mostat |= (UART_MCR_RTS);
if (!(ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE))
ch->ch_mostat |= (UART_MCR_DTR);
}
} else {
int iindex = 0;
int jindex = 0;
ulong bauds[4][16] = {
{ /* slowbaud */
0, 50, 75, 110,
134, 150, 200, 300,
600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 },
{ /* slowbaud & CBAUDEX */
0, 57600, 115200, 230400,
460800, 150, 200, 921600,
600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 },
{ /* fastbaud */
0, 57600, 76800, 115200,
131657, 153600, 230400, 460800,
921600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 },
{ /* fastbaud & CBAUDEX */
0, 57600, 115200, 230400,
460800, 150, 200, 921600,
600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 }
};
/* Only use the TXPrint baud rate if the terminal unit is NOT open */
if (!(ch->ch_tun.un_flags & UN_ISOPEN) && (un->un_type == DGNC_PRINT))
baud = C_BAUD(ch->ch_pun.un_tty) & 0xff;
else
baud = C_BAUD(ch->ch_tun.un_tty) & 0xff;
if (ch->ch_c_cflag & CBAUDEX)
iindex = 1;
if (ch->ch_digi.digi_flags & DIGI_FAST)
iindex += 2;
jindex = baud;
if ((iindex >= 0) && (iindex < 4) && (jindex >= 0) && (jindex < 16))
baud = bauds[iindex][jindex];
else
baud = 0;
if (baud == 0)
baud = 9600;
/* Handle transition from B0 */
if (ch->ch_flags & CH_BAUD0) {
ch->ch_flags &= ~(CH_BAUD0);
/*
* Bring back up RTS and DTR...
* Also handle RTS or DTR toggle if set.
*/
if (!(ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE))
ch->ch_mostat |= (UART_MCR_RTS);
if (!(ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE))
ch->ch_mostat |= (UART_MCR_DTR);
}
}
if (ch->ch_c_cflag & PARENB)
lcr |= UART_LCR_PARITY;
if (!(ch->ch_c_cflag & PARODD))
lcr |= UART_LCR_EPAR;
/*
* Not all platforms support mark/space parity,
* so this will hide behind an ifdef.
*/
#ifdef CMSPAR
if (ch->ch_c_cflag & CMSPAR)
lcr |= UART_LCR_SPAR;
#endif
if (ch->ch_c_cflag & CSTOPB)
lcr |= UART_LCR_STOP;
switch (ch->ch_c_cflag & CSIZE) {
case CS5:
lcr |= UART_LCR_WLEN5;
break;
case CS6:
lcr |= UART_LCR_WLEN6;
break;
case CS7:
lcr |= UART_LCR_WLEN7;
break;
case CS8:
default:
lcr |= UART_LCR_WLEN8;
break;
}
uart_ier = readb(&ch->ch_neo_uart->ier);
ier = uart_ier;
uart_lcr = readb(&ch->ch_neo_uart->lcr);
if (baud == 0)
baud = 9600;
quot = ch->ch_bd->bd_dividend / baud;
if (quot != 0 && ch->ch_old_baud != baud) {
ch->ch_old_baud = baud;
writeb(UART_LCR_DLAB, &ch->ch_neo_uart->lcr);
writeb((quot & 0xff), &ch->ch_neo_uart->txrx);
writeb((quot >> 8), &ch->ch_neo_uart->ier);
writeb(lcr, &ch->ch_neo_uart->lcr);
}
/*
* neo_param()
* Send any/all changes to the line to the UART.
*/
static void neo_param(struct jsm_channel *ch)
{
u8 lcr = 0;
u8 uart_lcr = 0;
u8 ier = 0;
u32 baud = 9600;
int quot = 0;
struct jsm_board *bd;
bd = ch->ch_bd;
if (!bd)
return;
/*
* If baud rate is zero, flush queues, and set mval to drop DTR.
*/
if ((ch->ch_c_cflag & (CBAUD)) == 0) {
ch->ch_r_head = ch->ch_r_tail = 0;
ch->ch_e_head = ch->ch_e_tail = 0;
ch->ch_w_head = ch->ch_w_tail = 0;
neo_flush_uart_write(ch);
neo_flush_uart_read(ch);
ch->ch_flags |= (CH_BAUD0);
ch->ch_mostat &= ~(UART_MCR_RTS | UART_MCR_DTR);
neo_assert_modem_signals(ch);
ch->ch_old_baud = 0;
return;
} else if (ch->ch_custom_speed) {
baud = ch->ch_custom_speed;
if (ch->ch_flags & CH_BAUD0)
ch->ch_flags &= ~(CH_BAUD0);
} else {
int iindex = 0;
int jindex = 0;
const u64 bauds[4][16] = {
{
0, 50, 75, 110,
134, 150, 200, 300,
600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 },
{
0, 57600, 115200, 230400,
460800, 150, 200, 921600,
600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 },
{
0, 57600, 76800, 115200,
131657, 153600, 230400, 460800,
921600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 },
{
0, 57600, 115200, 230400,
460800, 150, 200, 921600,
600, 1200, 1800, 2400,
4800, 9600, 19200, 38400 }
};
baud = C_BAUD(ch->uart_port.info->tty) & 0xff;
if (ch->ch_c_cflag & CBAUDEX)
iindex = 1;
jindex = baud;
if ((iindex >= 0) && (iindex < 4) && (jindex >= 0) && (jindex < 16))
baud = bauds[iindex][jindex];
else {
jsm_printk(IOCTL, DEBUG, &ch->ch_bd->pci_dev,
"baud indices were out of range (%d)(%d)",
iindex, jindex);
baud = 0;
}
if (baud == 0)
baud = 9600;
if (ch->ch_flags & CH_BAUD0)
ch->ch_flags &= ~(CH_BAUD0);
}
if (ch->ch_c_cflag & PARENB)
lcr |= UART_LCR_PARITY;
if (!(ch->ch_c_cflag & PARODD))
lcr |= UART_LCR_EPAR;
/*
* Not all platforms support mark/space parity,
* so this will hide behind an ifdef.
*/
#ifdef CMSPAR
if (ch->ch_c_cflag & CMSPAR)
lcr |= UART_LCR_SPAR;
#endif
if (ch->ch_c_cflag & CSTOPB)
lcr |= UART_LCR_STOP;
switch (ch->ch_c_cflag & CSIZE) {
case CS5:
lcr |= UART_LCR_WLEN5;
break;
case CS6:
lcr |= UART_LCR_WLEN6;
break;
case CS7:
lcr |= UART_LCR_WLEN7;
break;
case CS8:
default:
lcr |= UART_LCR_WLEN8;
break;
}
ier = readb(&ch->ch_neo_uart->ier);
uart_lcr = readb(&ch->ch_neo_uart->lcr);
if (baud == 0)
baud = 9600;
quot = ch->ch_bd->bd_dividend / baud;
if (quot != 0) {
ch->ch_old_baud = baud;
writeb(UART_LCR_DLAB, &ch->ch_neo_uart->lcr);
writeb((quot & 0xff), &ch->ch_neo_uart->txrx);
writeb((quot >> 8), &ch->ch_neo_uart->ier);
writeb(lcr, &ch->ch_neo_uart->lcr);
}
