[PATCH] Char: mxser_new, upgrade to 1.9.15
- allow special rates - break when bad status Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jiri Slaby
Linus Torvalds
parent
1a221026c3
commit
f64c84a166
2 changed files with 105 additions and 20 deletions
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@ -49,7 +49,7 @@
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#include "mxser_new.h"
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#define MXSER_VERSION "2.0"
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#define MXSER_VERSION "2.0.1" /* 1.9.15 */
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#define MXSERMAJOR 174
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#define MXSERCUMAJOR 175
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@ -179,6 +179,18 @@ static struct pci_device_id mxser_pcibrds[] = {
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};
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MODULE_DEVICE_TABLE(pci, mxser_pcibrds);
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static int mxvar_baud_table[] = {
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0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400,
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4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600
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};
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static unsigned int mxvar_baud_table1[] = {
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0, B50, B75, B110, B134, B150, B200, B300, B600, B1200, B1800, B2400,
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B4800, B9600, B19200, B38400, B57600, B115200, B230400, B460800, B921600
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};
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#define BAUD_TABLE_NO ARRAY_SIZE(mxvar_baud_table)
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#define B_SPEC B2000000
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static int ioaddr[MXSER_BOARDS] = { 0, 0, 0, 0 };
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static int ttymajor = MXSERMAJOR;
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static int calloutmajor = MXSERCUMAJOR;
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@ -240,6 +252,7 @@ struct mxser_port {
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long realbaud;
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int type; /* UART type */
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int flags; /* defined in tty.h */
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int speed;
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int x_char; /* xon/xoff character */
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int IER; /* Interrupt Enable Register */
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@ -444,10 +457,10 @@ static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp,
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static int mxser_set_baud(struct mxser_port *info, long newspd)
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{
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unsigned int i;
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int quot = 0;
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unsigned char cval;
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int ret = 0;
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unsigned long flags;
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if (!info->tty || !info->tty->termios)
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return ret;
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@ -459,29 +472,34 @@ static int mxser_set_baud(struct mxser_port *info, long newspd)
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return 0;
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info->realbaud = newspd;
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if (newspd == 134) {
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quot = (2 * info->baud_base / 269);
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} else if (newspd) {
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quot = info->baud_base / newspd;
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if (quot == 0)
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quot = 1;
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for (i = 0; i < BAUD_TABLE_NO; i++)
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if (newspd == mxvar_baud_table[i])
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break;
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if (i == BAUD_TABLE_NO) {
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quot = info->baud_base / info->speed;
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if (info->speed <= 0 || info->speed > info->max_baud)
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quot = 0;
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} else {
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quot = 0;
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if (newspd == 134) {
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quot = (2 * info->baud_base / 269);
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} else if (newspd) {
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quot = info->baud_base / newspd;
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if (quot == 0)
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quot = 1;
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} else {
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quot = 0;
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}
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}
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info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base);
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info->timeout += HZ / 50; /* Add .02 seconds of slop */
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if (quot) {
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spin_lock_irqsave(&info->slock, flags);
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info->MCR |= UART_MCR_DTR;
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outb(info->MCR, info->ioaddr + UART_MCR);
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spin_unlock_irqrestore(&info->slock, flags);
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} else {
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spin_lock_irqsave(&info->slock, flags);
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info->MCR &= ~UART_MCR_DTR;
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outb(info->MCR, info->ioaddr + UART_MCR);
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spin_unlock_irqrestore(&info->slock, flags);
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return ret;
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}
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@ -493,6 +511,18 @@ static int mxser_set_baud(struct mxser_port *info, long newspd)
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outb(quot >> 8, info->ioaddr + UART_DLM); /* MS of divisor */
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outb(cval, info->ioaddr + UART_LCR); /* reset DLAB */
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if (i == BAUD_TABLE_NO) {
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quot = info->baud_base % info->speed;
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quot *= 8;
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if ((quot % info->speed) > (info->speed / 2)) {
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quot /= info->speed;
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quot++;
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} else {
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quot /= info->speed;
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}
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SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, quot);
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} else
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SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, 0);
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return ret;
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}
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@ -508,7 +538,6 @@ static int mxser_change_speed(struct mxser_port *info,
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int ret = 0;
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unsigned char status;
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long baud;
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unsigned long flags;
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if (!info->tty || !info->tty->termios)
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return ret;
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@ -517,7 +546,10 @@ static int mxser_change_speed(struct mxser_port *info,
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return ret;
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if (mxser_set_baud_method[info->tty->index] == 0) {
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baud = tty_get_baud_rate(info->tty);
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if ((cflag & CBAUD) == B_SPEC)
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baud = info->speed;
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else
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baud = tty_get_baud_rate(info->tty);
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mxser_set_baud(info, baud);
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}
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@ -656,7 +688,6 @@ static int mxser_change_speed(struct mxser_port *info,
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}
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}
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if (info->board->chip_flag) {
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spin_lock_irqsave(&info->slock, flags);
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SET_MOXA_MUST_XON1_VALUE(info->ioaddr, START_CHAR(info->tty));
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SET_MOXA_MUST_XOFF1_VALUE(info->ioaddr, STOP_CHAR(info->tty));
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if (I_IXON(info->tty)) {
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@ -669,7 +700,6 @@ static int mxser_change_speed(struct mxser_port *info,
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} else {
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DISABLE_MOXA_MUST_TX_SOFTWARE_FLOW_CONTROL(info->ioaddr);
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}
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spin_unlock_irqrestore(&info->slock, flags);
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}
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@ -822,8 +852,8 @@ static int mxser_startup(struct mxser_port *info)
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/*
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* and set the speed of the serial port
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*/
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spin_unlock_irqrestore(&info->slock, flags);
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mxser_change_speed(info, NULL);
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spin_unlock_irqrestore(&info->slock, flags);
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info->flags |= ASYNC_INITIALIZED;
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return 0;
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@ -1195,6 +1225,7 @@ static int mxser_set_serial_info(struct mxser_port *info,
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struct serial_struct __user *new_info)
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{
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struct serial_struct new_serial;
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unsigned long sl_flags;
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unsigned int flags;
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int retval = 0;
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@ -1237,8 +1268,11 @@ static int mxser_set_serial_info(struct mxser_port *info,
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process_txrx_fifo(info);
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if (info->flags & ASYNC_INITIALIZED) {
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if (flags != (info->flags & ASYNC_SPD_MASK))
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if (flags != (info->flags & ASYNC_SPD_MASK)) {
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spin_lock_irqsave(&info->slock, sl_flags);
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mxser_change_speed(info, NULL);
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spin_unlock_irqrestore(&info->slock, sl_flags);
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}
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} else
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retval = mxser_startup(info);
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@ -1615,6 +1649,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
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struct serial_icounter_struct __user *p_cuser;
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unsigned long templ;
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unsigned long flags;
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unsigned int i;
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void __user *argp = (void __user *)arg;
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int retval;
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@ -1653,6 +1688,36 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
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return 0;
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}
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if (cmd == MOXA_SET_SPECIAL_BAUD_RATE) {
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int speed;
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if (get_user(speed, (int __user *)argp))
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return -EFAULT;
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if (speed <= 0 || speed > info->max_baud)
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return -EFAULT;
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if (!info->tty || !info->tty->termios || !info->ioaddr)
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return 0;
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info->tty->termios->c_cflag &= ~(CBAUD | CBAUDEX);
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for (i = 0; i < BAUD_TABLE_NO; i++)
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if (speed == mxvar_baud_table[i])
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break;
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if (i == BAUD_TABLE_NO) {
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info->tty->termios->c_cflag |= B_SPEC;
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} else if (speed != 0)
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info->tty->termios->c_cflag |= mxvar_baud_table1[i];
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info->speed = speed;
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spin_lock_irqsave(&info->slock, flags);
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mxser_change_speed(info, 0);
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spin_unlock_irqrestore(&info->slock, flags);
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return 0;
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} else if (cmd == MOXA_GET_SPECIAL_BAUD_RATE) {
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if (copy_to_user(argp, &info->speed, sizeof(int)))
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return -EFAULT;
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return 0;
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}
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if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && cmd != TIOCGICOUNT &&
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test_bit(TTY_IO_ERROR, &tty->flags))
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return -EIO;
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@ -1770,7 +1835,9 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
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long baud;
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if (get_user(baud, (long __user *)argp))
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return -EFAULT;
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spin_lock_irqsave(&info->slock, flags);
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mxser_set_baud(info, baud);
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spin_unlock_irqrestore(&info->slock, flags);
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return 0;
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}
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case MOXA_ASPP_GETBAUD:
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@ -1947,7 +2014,9 @@ static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termi
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if ((tty->termios->c_cflag != old_termios->c_cflag) ||
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(RELEVANT_IFLAG(tty->termios->c_iflag) != RELEVANT_IFLAG(old_termios->c_iflag))) {
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spin_lock_irqsave(&info->slock, flags);
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mxser_change_speed(info, old_termios);
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spin_unlock_irqrestore(&info->slock, flags);
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if ((old_termios->c_cflag & CRTSCTS) &&
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!(tty->termios->c_cflag & CRTSCTS)) {
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@ -2137,7 +2206,8 @@ static void mxser_receive_chars(struct mxser_port *port, int *status)
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} else if (*status & UART_LSR_OE) {
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flag = TTY_OVERRUN;
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port->icount.overrun++;
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}
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} else
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flag = TTY_BREAK;
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}
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tty_insert_flip_char(tty, ch, flag);
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cnt++;
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@ -2385,6 +2455,7 @@ static int __devinit mxser_initbrd(struct mxser_board *brd,
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info->normal_termios = mxvar_sdriver->init_termios;
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init_waitqueue_head(&info->open_wait);
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init_waitqueue_head(&info->delta_msr_wait);
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info->speed = 9600;
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memset(&info->mon_data, 0, sizeof(struct mxser_mon));
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info->err_shadow = 0;
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spin_lock_init(&info->slock);
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@ -35,6 +35,8 @@
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#define MOXA_ASPP_LSTATUS (MOXA + 74)
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#define MOXA_ASPP_MON_EXT (MOXA + 75)
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#define MOXA_SET_BAUD_METHOD (MOXA + 76)
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#define MOXA_SET_SPECIAL_BAUD_RATE (MOXA + 77)
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#define MOXA_GET_SPECIAL_BAUD_RATE (MOXA + 78)
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/* --------------------------------------------------- */
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@ -212,6 +214,18 @@
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outb(__oldlcr, (info)->ioaddr+UART_LCR); \
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} while (0)
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#define SET_MOXA_MUST_ENUM_VALUE(baseio, Value) do { \
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u8 __oldlcr, __efr; \
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__oldlcr = inb((baseio)+UART_LCR); \
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outb(MOXA_MUST_ENTER_ENCHANCE, (baseio)+UART_LCR); \
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__efr = inb((baseio)+MOXA_MUST_EFR_REGISTER); \
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__efr &= ~MOXA_MUST_EFR_BANK_MASK; \
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__efr |= MOXA_MUST_EFR_BANK2; \
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outb(__efr, (baseio)+MOXA_MUST_EFR_REGISTER); \
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outb((u8)(Value), (baseio)+MOXA_MUST_ENUM_REGISTER); \
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outb(__oldlcr, (baseio)+UART_LCR); \
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} while (0)
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#define GET_MOXA_MUST_HARDWARE_ID(baseio, pId) do { \
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u8 __oldlcr, __efr; \
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__oldlcr = inb((baseio)+UART_LCR); \
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