2005-04-17 05:20:36 +07:00
|
|
|
/*
|
|
|
|
* Simulated Serial Driver (fake serial)
|
|
|
|
*
|
|
|
|
* This driver is mostly used for bringup purposes and will go away.
|
|
|
|
* It has a strong dependency on the system console. All outputs
|
|
|
|
* are rerouted to the same facility as the one used by printk which, in our
|
|
|
|
* case means sys_sim.c console (goes via the simulator). The code hereafter
|
|
|
|
* is completely leveraged from the serial.c driver.
|
|
|
|
*
|
|
|
|
* Copyright (C) 1999-2000, 2002-2003 Hewlett-Packard Co
|
|
|
|
* Stephane Eranian <eranian@hpl.hp.com>
|
|
|
|
* David Mosberger-Tang <davidm@hpl.hp.com>
|
|
|
|
*
|
|
|
|
* 02/04/00 D. Mosberger Merged in serial.c bug fixes in rs_close().
|
|
|
|
* 02/25/00 D. Mosberger Synced up with 2.3.99pre-5 version of serial.c.
|
|
|
|
* 07/30/02 D. Mosberger Replace sti()/cli() with explicit spinlocks & local irq masking
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/errno.h>
|
|
|
|
#include <linux/sched.h>
|
|
|
|
#include <linux/tty.h>
|
|
|
|
#include <linux/tty_flip.h>
|
|
|
|
#include <linux/major.h>
|
|
|
|
#include <linux/fcntl.h>
|
|
|
|
#include <linux/mm.h>
|
|
|
|
#include <linux/slab.h>
|
2006-01-12 03:17:48 +07:00
|
|
|
#include <linux/capability.h>
|
2005-04-17 05:20:36 +07:00
|
|
|
#include <linux/console.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/serial.h>
|
|
|
|
#include <linux/serialP.h>
|
2005-06-10 12:40:00 +07:00
|
|
|
#include <linux/sysrq.h>
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
#include <asm/irq.h>
|
|
|
|
#include <asm/hw_irq.h>
|
|
|
|
#include <asm/uaccess.h>
|
|
|
|
|
|
|
|
#undef SIMSERIAL_DEBUG /* define this to get some debug information */
|
|
|
|
|
|
|
|
#define KEYBOARD_INTR 3 /* must match with simulator! */
|
|
|
|
|
|
|
|
#define NR_PORTS 1 /* only one port for now */
|
|
|
|
|
2006-07-02 09:29:17 +07:00
|
|
|
#define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? IRQF_SHARED : IRQF_DISABLED)
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
#define SSC_GETCHAR 21
|
|
|
|
|
|
|
|
extern long ia64_ssc (long, long, long, long, int);
|
|
|
|
extern void ia64_ssc_connect_irq (long intr, long irq);
|
|
|
|
|
|
|
|
static char *serial_name = "SimSerial driver";
|
|
|
|
static char *serial_version = "0.6";
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This has been extracted from asm/serial.h. We need one eventually but
|
|
|
|
* I don't know exactly what we're going to put in it so just fake one
|
|
|
|
* for now.
|
|
|
|
*/
|
|
|
|
#define BASE_BAUD ( 1843200 / 16 )
|
|
|
|
|
|
|
|
#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Most of the values here are meaningless to this particular driver.
|
|
|
|
* However some values must be preserved for the code (leveraged from serial.c
|
|
|
|
* to work correctly).
|
|
|
|
* port must not be 0
|
|
|
|
* type must not be UNKNOWN
|
|
|
|
* So I picked arbitrary (guess from where?) values instead
|
|
|
|
*/
|
|
|
|
static struct serial_state rs_table[NR_PORTS]={
|
|
|
|
/* UART CLK PORT IRQ FLAGS */
|
|
|
|
{ 0, BASE_BAUD, 0x3F8, 0, STD_COM_FLAGS,0,PORT_16550 } /* ttyS0 */
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Just for the fun of it !
|
|
|
|
*/
|
|
|
|
static struct serial_uart_config uart_config[] = {
|
|
|
|
{ "unknown", 1, 0 },
|
|
|
|
{ "8250", 1, 0 },
|
|
|
|
{ "16450", 1, 0 },
|
|
|
|
{ "16550", 1, 0 },
|
|
|
|
{ "16550A", 16, UART_CLEAR_FIFO | UART_USE_FIFO },
|
|
|
|
{ "cirrus", 1, 0 },
|
|
|
|
{ "ST16650", 1, UART_CLEAR_FIFO | UART_STARTECH },
|
|
|
|
{ "ST16650V2", 32, UART_CLEAR_FIFO | UART_USE_FIFO |
|
|
|
|
UART_STARTECH },
|
|
|
|
{ "TI16750", 64, UART_CLEAR_FIFO | UART_USE_FIFO},
|
2006-10-11 04:46:17 +07:00
|
|
|
{ NULL, 0}
|
2005-04-17 05:20:36 +07:00
|
|
|
};
|
|
|
|
|
|
|
|
struct tty_driver *hp_simserial_driver;
|
|
|
|
|
|
|
|
static struct async_struct *IRQ_ports[NR_IRQS];
|
|
|
|
|
|
|
|
static struct console *console;
|
|
|
|
|
|
|
|
static unsigned char *tmp_buf;
|
|
|
|
|
|
|
|
extern struct console *console_drivers; /* from kernel/printk.c */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ------------------------------------------------------------
|
|
|
|
* rs_stop() and rs_start()
|
|
|
|
*
|
|
|
|
* This routines are called before setting or resetting tty->stopped.
|
|
|
|
* They enable or disable transmitter interrupts, as necessary.
|
|
|
|
* ------------------------------------------------------------
|
|
|
|
*/
|
|
|
|
static void rs_stop(struct tty_struct *tty)
|
|
|
|
{
|
|
|
|
#ifdef SIMSERIAL_DEBUG
|
|
|
|
printk("rs_stop: tty->stopped=%d tty->hw_stopped=%d tty->flow_stopped=%d\n",
|
|
|
|
tty->stopped, tty->hw_stopped, tty->flow_stopped);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static void rs_start(struct tty_struct *tty)
|
|
|
|
{
|
2005-09-08 05:23:50 +07:00
|
|
|
#ifdef SIMSERIAL_DEBUG
|
2005-04-17 05:20:36 +07:00
|
|
|
printk("rs_start: tty->stopped=%d tty->hw_stopped=%d tty->flow_stopped=%d\n",
|
|
|
|
tty->stopped, tty->hw_stopped, tty->flow_stopped);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2006-10-08 20:59:19 +07:00
|
|
|
static void receive_chars(struct tty_struct *tty)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
|
|
|
unsigned char ch;
|
|
|
|
static unsigned char seen_esc = 0;
|
|
|
|
|
|
|
|
while ( (ch = ia64_ssc(0, 0, 0, 0, SSC_GETCHAR)) ) {
|
|
|
|
if ( ch == 27 && seen_esc == 0 ) {
|
|
|
|
seen_esc = 1;
|
|
|
|
continue;
|
|
|
|
} else {
|
|
|
|
if ( seen_esc==1 && ch == 'O' ) {
|
|
|
|
seen_esc = 2;
|
|
|
|
continue;
|
|
|
|
} else if ( seen_esc == 2 ) {
|
2005-06-10 12:40:00 +07:00
|
|
|
if ( ch == 'P' ) /* F1 */
|
|
|
|
show_state();
|
|
|
|
#ifdef CONFIG_MAGIC_SYSRQ
|
|
|
|
if ( ch == 'S' ) { /* F4 */
|
|
|
|
do
|
|
|
|
ch = ia64_ssc(0, 0, 0, 0,
|
|
|
|
SSC_GETCHAR);
|
|
|
|
while (!ch);
|
2006-10-08 20:59:19 +07:00
|
|
|
handle_sysrq(ch, NULL);
|
2005-06-10 12:40:00 +07:00
|
|
|
}
|
2005-04-17 05:20:36 +07:00
|
|
|
#endif
|
|
|
|
seen_esc = 0;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
seen_esc = 0;
|
|
|
|
|
2006-01-14 05:46:38 +07:00
|
|
|
if (tty_insert_flip_char(tty, ch, TTY_NORMAL) == 0)
|
|
|
|
break;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
tty_flip_buffer_push(tty);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This is the serial driver's interrupt routine for a single port
|
|
|
|
*/
|
2006-10-08 20:59:19 +07:00
|
|
|
static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
|
|
|
struct async_struct * info;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* I don't know exactly why they don't use the dev_id opaque data
|
|
|
|
* pointer instead of this extra lookup table
|
|
|
|
*/
|
|
|
|
info = IRQ_ports[irq];
|
|
|
|
if (!info || !info->tty) {
|
|
|
|
printk(KERN_INFO "simrs_interrupt_single: info|tty=0 info=%p problem\n", info);
|
|
|
|
return IRQ_NONE;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* pretty simple in our case, because we only get interrupts
|
|
|
|
* on inbound traffic
|
|
|
|
*/
|
2006-10-08 20:59:19 +07:00
|
|
|
receive_chars(info->tty);
|
2005-04-17 05:20:36 +07:00
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* -------------------------------------------------------------------
|
|
|
|
* Here ends the serial interrupt routines.
|
|
|
|
* -------------------------------------------------------------------
|
|
|
|
*/
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
/*
|
|
|
|
* not really used in our situation so keep them commented out for now
|
|
|
|
*/
|
|
|
|
static DECLARE_TASK_QUEUE(tq_serial); /* used to be at the top of the file */
|
|
|
|
static void do_serial_bh(void)
|
|
|
|
{
|
|
|
|
run_task_queue(&tq_serial);
|
|
|
|
printk(KERN_ERR "do_serial_bh: called\n");
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2006-12-06 02:36:26 +07:00
|
|
|
static void do_softint(struct work_struct *private_)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
|
|
|
printk(KERN_ERR "simserial: do_softint called\n");
|
|
|
|
}
|
|
|
|
|
2008-04-30 14:54:13 +07:00
|
|
|
static int rs_put_char(struct tty_struct *tty, unsigned char ch)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
|
|
|
struct async_struct *info = (struct async_struct *)tty->driver_data;
|
|
|
|
unsigned long flags;
|
|
|
|
|
2008-04-30 14:54:13 +07:00
|
|
|
if (!tty || !info->xmit.buf)
|
|
|
|
return 0;
|
2005-04-17 05:20:36 +07:00
|
|
|
|
|
|
|
local_irq_save(flags);
|
|
|
|
if (CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) == 0) {
|
|
|
|
local_irq_restore(flags);
|
2008-04-30 14:54:13 +07:00
|
|
|
return 0;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
info->xmit.buf[info->xmit.head] = ch;
|
|
|
|
info->xmit.head = (info->xmit.head + 1) & (SERIAL_XMIT_SIZE-1);
|
|
|
|
local_irq_restore(flags);
|
2008-04-30 14:54:13 +07:00
|
|
|
return 1;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
2006-03-23 18:00:56 +07:00
|
|
|
static void transmit_chars(struct async_struct *info, int *intr_done)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
|
|
|
int count;
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
|
|
|
|
local_irq_save(flags);
|
|
|
|
|
|
|
|
if (info->x_char) {
|
|
|
|
char c = info->x_char;
|
|
|
|
|
|
|
|
console->write(console, &c, 1);
|
|
|
|
|
|
|
|
info->state->icount.tx++;
|
|
|
|
info->x_char = 0;
|
|
|
|
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (info->xmit.head == info->xmit.tail || info->tty->stopped || info->tty->hw_stopped) {
|
|
|
|
#ifdef SIMSERIAL_DEBUG
|
|
|
|
printk("transmit_chars: head=%d, tail=%d, stopped=%d\n",
|
|
|
|
info->xmit.head, info->xmit.tail, info->tty->stopped);
|
|
|
|
#endif
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* We removed the loop and try to do it in to chunks. We need
|
|
|
|
* 2 operations maximum because it's a ring buffer.
|
|
|
|
*
|
|
|
|
* First from current to tail if possible.
|
|
|
|
* Then from the beginning of the buffer until necessary
|
|
|
|
*/
|
|
|
|
|
|
|
|
count = min(CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE),
|
|
|
|
SERIAL_XMIT_SIZE - info->xmit.tail);
|
|
|
|
console->write(console, info->xmit.buf+info->xmit.tail, count);
|
|
|
|
|
|
|
|
info->xmit.tail = (info->xmit.tail+count) & (SERIAL_XMIT_SIZE-1);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We have more at the beginning of the buffer
|
|
|
|
*/
|
|
|
|
count = CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
|
|
|
|
if (count) {
|
|
|
|
console->write(console, info->xmit.buf, count);
|
|
|
|
info->xmit.tail += count;
|
|
|
|
}
|
|
|
|
out:
|
|
|
|
local_irq_restore(flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void rs_flush_chars(struct tty_struct *tty)
|
|
|
|
{
|
|
|
|
struct async_struct *info = (struct async_struct *)tty->driver_data;
|
|
|
|
|
|
|
|
if (info->xmit.head == info->xmit.tail || tty->stopped || tty->hw_stopped ||
|
|
|
|
!info->xmit.buf)
|
|
|
|
return;
|
|
|
|
|
|
|
|
transmit_chars(info, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int rs_write(struct tty_struct * tty,
|
|
|
|
const unsigned char *buf, int count)
|
|
|
|
{
|
|
|
|
int c, ret = 0;
|
|
|
|
struct async_struct *info = (struct async_struct *)tty->driver_data;
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
if (!tty || !info->xmit.buf || !tmp_buf) return 0;
|
|
|
|
|
|
|
|
local_irq_save(flags);
|
|
|
|
while (1) {
|
|
|
|
c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
|
|
|
|
if (count < c)
|
|
|
|
c = count;
|
|
|
|
if (c <= 0) {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
memcpy(info->xmit.buf + info->xmit.head, buf, c);
|
|
|
|
info->xmit.head = ((info->xmit.head + c) &
|
|
|
|
(SERIAL_XMIT_SIZE-1));
|
|
|
|
buf += c;
|
|
|
|
count -= c;
|
|
|
|
ret += c;
|
|
|
|
}
|
|
|
|
local_irq_restore(flags);
|
|
|
|
/*
|
|
|
|
* Hey, we transmit directly from here in our case
|
|
|
|
*/
|
|
|
|
if (CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE)
|
|
|
|
&& !tty->stopped && !tty->hw_stopped) {
|
|
|
|
transmit_chars(info, NULL);
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rs_write_room(struct tty_struct *tty)
|
|
|
|
{
|
|
|
|
struct async_struct *info = (struct async_struct *)tty->driver_data;
|
|
|
|
|
|
|
|
return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rs_chars_in_buffer(struct tty_struct *tty)
|
|
|
|
{
|
|
|
|
struct async_struct *info = (struct async_struct *)tty->driver_data;
|
|
|
|
|
|
|
|
return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void rs_flush_buffer(struct tty_struct *tty)
|
|
|
|
{
|
|
|
|
struct async_struct *info = (struct async_struct *)tty->driver_data;
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
local_irq_save(flags);
|
|
|
|
info->xmit.head = info->xmit.tail = 0;
|
|
|
|
local_irq_restore(flags);
|
|
|
|
|
|
|
|
wake_up_interruptible(&tty->write_wait);
|
|
|
|
|
|
|
|
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
|
|
|
|
tty->ldisc.write_wakeup)
|
|
|
|
(tty->ldisc.write_wakeup)(tty);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This function is used to send a high-priority XON/XOFF character to
|
|
|
|
* the device
|
|
|
|
*/
|
|
|
|
static void rs_send_xchar(struct tty_struct *tty, char ch)
|
|
|
|
{
|
|
|
|
struct async_struct *info = (struct async_struct *)tty->driver_data;
|
|
|
|
|
|
|
|
info->x_char = ch;
|
|
|
|
if (ch) {
|
|
|
|
/*
|
|
|
|
* I guess we could call console->write() directly but
|
|
|
|
* let's do that for now.
|
|
|
|
*/
|
|
|
|
transmit_chars(info, NULL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ------------------------------------------------------------
|
|
|
|
* rs_throttle()
|
|
|
|
*
|
|
|
|
* This routine is called by the upper-layer tty layer to signal that
|
|
|
|
* incoming characters should be throttled.
|
|
|
|
* ------------------------------------------------------------
|
|
|
|
*/
|
|
|
|
static void rs_throttle(struct tty_struct * tty)
|
|
|
|
{
|
|
|
|
if (I_IXOFF(tty)) rs_send_xchar(tty, STOP_CHAR(tty));
|
|
|
|
|
|
|
|
printk(KERN_INFO "simrs_throttle called\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
static void rs_unthrottle(struct tty_struct * tty)
|
|
|
|
{
|
|
|
|
struct async_struct *info = (struct async_struct *)tty->driver_data;
|
|
|
|
|
|
|
|
if (I_IXOFF(tty)) {
|
|
|
|
if (info->x_char)
|
|
|
|
info->x_char = 0;
|
|
|
|
else
|
|
|
|
rs_send_xchar(tty, START_CHAR(tty));
|
|
|
|
}
|
|
|
|
printk(KERN_INFO "simrs_unthrottle called\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* rs_break() --- routine which turns the break handling on or off
|
|
|
|
*/
|
|
|
|
static void rs_break(struct tty_struct *tty, int break_state)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rs_ioctl(struct tty_struct *tty, struct file * file,
|
|
|
|
unsigned int cmd, unsigned long arg)
|
|
|
|
{
|
|
|
|
if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
|
|
|
|
(cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) &&
|
|
|
|
(cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
|
|
|
|
if (tty->flags & (1 << TTY_IO_ERROR))
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (cmd) {
|
|
|
|
case TIOCMGET:
|
|
|
|
printk(KERN_INFO "rs_ioctl: TIOCMGET called\n");
|
|
|
|
return -EINVAL;
|
|
|
|
case TIOCMBIS:
|
|
|
|
case TIOCMBIC:
|
|
|
|
case TIOCMSET:
|
|
|
|
printk(KERN_INFO "rs_ioctl: TIOCMBIS/BIC/SET called\n");
|
|
|
|
return -EINVAL;
|
|
|
|
case TIOCGSERIAL:
|
|
|
|
printk(KERN_INFO "simrs_ioctl TIOCGSERIAL called\n");
|
|
|
|
return 0;
|
|
|
|
case TIOCSSERIAL:
|
|
|
|
printk(KERN_INFO "simrs_ioctl TIOCSSERIAL called\n");
|
|
|
|
return 0;
|
|
|
|
case TIOCSERCONFIG:
|
|
|
|
printk(KERN_INFO "rs_ioctl: TIOCSERCONFIG called\n");
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
case TIOCSERGETLSR: /* Get line status register */
|
|
|
|
printk(KERN_INFO "rs_ioctl: TIOCSERGETLSR called\n");
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
case TIOCSERGSTRUCT:
|
|
|
|
printk(KERN_INFO "rs_ioctl: TIOCSERGSTRUCT called\n");
|
|
|
|
#if 0
|
|
|
|
if (copy_to_user((struct async_struct *) arg,
|
|
|
|
info, sizeof(struct async_struct)))
|
|
|
|
return -EFAULT;
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
|
|
|
|
* - mask passed in arg for lines of interest
|
|
|
|
* (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
|
|
|
|
* Caller should use TIOCGICOUNT to see which one it was
|
|
|
|
*/
|
|
|
|
case TIOCMIWAIT:
|
|
|
|
printk(KERN_INFO "rs_ioctl: TIOCMIWAIT: called\n");
|
|
|
|
return 0;
|
|
|
|
/*
|
|
|
|
* Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
|
|
|
|
* Return: write counters to the user passed counter struct
|
|
|
|
* NB: both 1->0 and 0->1 transitions are counted except for
|
|
|
|
* RI where only 0->1 is counted.
|
|
|
|
*/
|
|
|
|
case TIOCGICOUNT:
|
|
|
|
printk(KERN_INFO "rs_ioctl: TIOCGICOUNT called\n");
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
case TIOCSERGWILD:
|
|
|
|
case TIOCSERSWILD:
|
|
|
|
/* "setserial -W" is called in Debian boot */
|
|
|
|
printk (KERN_INFO "TIOCSER?WILD ioctl obsolete, ignored.\n");
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
default:
|
|
|
|
return -ENOIOCTLCMD;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
|
|
|
|
|
2006-12-13 01:47:36 +07:00
|
|
|
static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
|
2005-04-17 05:20:36 +07:00
|
|
|
{
|
|
|
|
unsigned int cflag = tty->termios->c_cflag;
|
|
|
|
|
|
|
|
if ( (cflag == old_termios->c_cflag)
|
|
|
|
&& ( RELEVANT_IFLAG(tty->termios->c_iflag)
|
|
|
|
== RELEVANT_IFLAG(old_termios->c_iflag)))
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
|
|
/* Handle turning off CRTSCTS */
|
|
|
|
if ((old_termios->c_cflag & CRTSCTS) &&
|
|
|
|
!(tty->termios->c_cflag & CRTSCTS)) {
|
|
|
|
tty->hw_stopped = 0;
|
|
|
|
rs_start(tty);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* This routine will shutdown a serial port; interrupts are disabled, and
|
|
|
|
* DTR is dropped if the hangup on close termio flag is on.
|
|
|
|
*/
|
|
|
|
static void shutdown(struct async_struct * info)
|
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
struct serial_state *state;
|
|
|
|
int retval;
|
|
|
|
|
|
|
|
if (!(info->flags & ASYNC_INITIALIZED)) return;
|
|
|
|
|
|
|
|
state = info->state;
|
|
|
|
|
|
|
|
#ifdef SIMSERIAL_DEBUG
|
|
|
|
printk("Shutting down serial port %d (irq %d)....", info->line,
|
|
|
|
state->irq);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
local_irq_save(flags);
|
|
|
|
{
|
|
|
|
/*
|
|
|
|
* First unlink the serial port from the IRQ chain...
|
|
|
|
*/
|
|
|
|
if (info->next_port)
|
|
|
|
info->next_port->prev_port = info->prev_port;
|
|
|
|
if (info->prev_port)
|
|
|
|
info->prev_port->next_port = info->next_port;
|
|
|
|
else
|
|
|
|
IRQ_ports[state->irq] = info->next_port;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Free the IRQ, if necessary
|
|
|
|
*/
|
|
|
|
if (state->irq && (!IRQ_ports[state->irq] ||
|
|
|
|
!IRQ_ports[state->irq]->next_port)) {
|
|
|
|
if (IRQ_ports[state->irq]) {
|
|
|
|
free_irq(state->irq, NULL);
|
|
|
|
retval = request_irq(state->irq, rs_interrupt_single,
|
|
|
|
IRQ_T(info), "serial", NULL);
|
|
|
|
|
|
|
|
if (retval)
|
|
|
|
printk(KERN_ERR "serial shutdown: request_irq: error %d"
|
|
|
|
" Couldn't reacquire IRQ.\n", retval);
|
|
|
|
} else
|
|
|
|
free_irq(state->irq, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (info->xmit.buf) {
|
|
|
|
free_page((unsigned long) info->xmit.buf);
|
2006-10-11 04:46:17 +07:00
|
|
|
info->xmit.buf = NULL;
|
2005-04-17 05:20:36 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
|
|
|
|
|
|
|
|
info->flags &= ~ASYNC_INITIALIZED;
|
|
|
|
}
|
|
|
|
local_irq_restore(flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ------------------------------------------------------------
|
|
|
|
* rs_close()
|
|
|
|
*
|
|
|
|
* This routine is called when the serial port gets closed. First, we
|
|
|
|
* wait for the last remaining data to be sent. Then, we unlink its
|
|
|
|
* async structure from the interrupt chain if necessary, and we free
|
|
|
|
* that IRQ if nothing is left in the chain.
|
|
|
|
* ------------------------------------------------------------
|
|
|
|
*/
|
|
|
|
static void rs_close(struct tty_struct *tty, struct file * filp)
|
|
|
|
{
|
|
|
|
struct async_struct * info = (struct async_struct *)tty->driver_data;
|
|
|
|
struct serial_state *state;
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
if (!info ) return;
|
|
|
|
|
|
|
|
state = info->state;
|
|
|
|
|
|
|
|
local_irq_save(flags);
|
|
|
|
if (tty_hung_up_p(filp)) {
|
|
|
|
#ifdef SIMSERIAL_DEBUG
|
|
|
|
printk("rs_close: hung_up\n");
|
|
|
|
#endif
|
|
|
|
local_irq_restore(flags);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
#ifdef SIMSERIAL_DEBUG
|
|
|
|
printk("rs_close ttys%d, count = %d\n", info->line, state->count);
|
|
|
|
#endif
|
|
|
|
if ((tty->count == 1) && (state->count != 1)) {
|
|
|
|
/*
|
|
|
|
* Uh, oh. tty->count is 1, which means that the tty
|
|
|
|
* structure will be freed. state->count should always
|
|
|
|
* be one in these conditions. If it's greater than
|
|
|
|
* one, we've got real problems, since it means the
|
|
|
|
* serial port won't be shutdown.
|
|
|
|
*/
|
|
|
|
printk(KERN_ERR "rs_close: bad serial port count; tty->count is 1, "
|
|
|
|
"state->count is %d\n", state->count);
|
|
|
|
state->count = 1;
|
|
|
|
}
|
|
|
|
if (--state->count < 0) {
|
|
|
|
printk(KERN_ERR "rs_close: bad serial port count for ttys%d: %d\n",
|
|
|
|
info->line, state->count);
|
|
|
|
state->count = 0;
|
|
|
|
}
|
|
|
|
if (state->count) {
|
|
|
|
local_irq_restore(flags);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
info->flags |= ASYNC_CLOSING;
|
|
|
|
local_irq_restore(flags);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Now we wait for the transmit buffer to clear; and we notify
|
|
|
|
* the line discipline to only process XON/XOFF characters.
|
|
|
|
*/
|
|
|
|
shutdown(info);
|
2008-04-30 14:54:13 +07:00
|
|
|
if (tty->ops->flush_buffer)
|
|
|
|
tty->ops->flush_buffer(tty);
|
2005-04-17 05:20:36 +07:00
|
|
|
if (tty->ldisc.flush_buffer) tty->ldisc.flush_buffer(tty);
|
|
|
|
info->event = 0;
|
2006-10-11 04:46:17 +07:00
|
|
|
info->tty = NULL;
|
2005-04-17 05:20:36 +07:00
|
|
|
if (info->blocked_open) {
|
2005-11-07 16:01:11 +07:00
|
|
|
if (info->close_delay)
|
|
|
|
schedule_timeout_interruptible(info->close_delay);
|
2005-04-17 05:20:36 +07:00
|
|
|
wake_up_interruptible(&info->open_wait);
|
|
|
|
}
|
|
|
|
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
|
|
|
|
wake_up_interruptible(&info->close_wait);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* rs_wait_until_sent() --- wait until the transmitter is empty
|
|
|
|
*/
|
|
|
|
static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* rs_hangup() --- called by tty_hangup() when a hangup is signaled.
|
|
|
|
*/
|
|
|
|
static void rs_hangup(struct tty_struct *tty)
|
|
|
|
{
|
|
|
|
struct async_struct * info = (struct async_struct *)tty->driver_data;
|
|
|
|
struct serial_state *state = info->state;
|
|
|
|
|
|
|
|
#ifdef SIMSERIAL_DEBUG
|
|
|
|
printk("rs_hangup: called\n");
|
|
|
|
#endif
|
|
|
|
|
|
|
|
state = info->state;
|
|
|
|
|
|
|
|
rs_flush_buffer(tty);
|
|
|
|
if (info->flags & ASYNC_CLOSING)
|
|
|
|
return;
|
|
|
|
shutdown(info);
|
|
|
|
|
|
|
|
info->event = 0;
|
|
|
|
state->count = 0;
|
|
|
|
info->flags &= ~ASYNC_NORMAL_ACTIVE;
|
2006-10-11 04:46:17 +07:00
|
|
|
info->tty = NULL;
|
2005-04-17 05:20:36 +07:00
|
|
|
wake_up_interruptible(&info->open_wait);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int get_async_struct(int line, struct async_struct **ret_info)
|
|
|
|
{
|
|
|
|
struct async_struct *info;
|
|
|
|
struct serial_state *sstate;
|
|
|
|
|
|
|
|
sstate = rs_table + line;
|
|
|
|
sstate->count++;
|
|
|
|
if (sstate->info) {
|
|
|
|
*ret_info = sstate->info;
|
|
|
|
return 0;
|
|
|
|
}
|
2006-12-05 05:58:35 +07:00
|
|
|
info = kzalloc(sizeof(struct async_struct), GFP_KERNEL);
|
2005-04-17 05:20:36 +07:00
|
|
|
if (!info) {
|
|
|
|
sstate->count--;
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
init_waitqueue_head(&info->open_wait);
|
|
|
|
init_waitqueue_head(&info->close_wait);
|
|
|
|
init_waitqueue_head(&info->delta_msr_wait);
|
|
|
|
info->magic = SERIAL_MAGIC;
|
|
|
|
info->port = sstate->port;
|
|
|
|
info->flags = sstate->flags;
|
|
|
|
info->xmit_fifo_size = sstate->xmit_fifo_size;
|
|
|
|
info->line = line;
|
2006-12-06 02:36:26 +07:00
|
|
|
INIT_WORK(&info->work, do_softint);
|
2005-04-17 05:20:36 +07:00
|
|
|
info->state = sstate;
|
|
|
|
if (sstate->info) {
|
|
|
|
kfree(info);
|
|
|
|
*ret_info = sstate->info;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
*ret_info = sstate->info = info;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
startup(struct async_struct *info)
|
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
int retval=0;
|
2006-10-09 18:19:47 +07:00
|
|
|
irq_handler_t handler;
|
2005-04-17 05:20:36 +07:00
|
|
|
struct serial_state *state= info->state;
|
|
|
|
unsigned long page;
|
|
|
|
|
|
|
|
page = get_zeroed_page(GFP_KERNEL);
|
|
|
|
if (!page)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
local_irq_save(flags);
|
|
|
|
|
|
|
|
if (info->flags & ASYNC_INITIALIZED) {
|
|
|
|
free_page(page);
|
|
|
|
goto errout;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!state->port || !state->type) {
|
|
|
|
if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
|
|
|
|
free_page(page);
|
|
|
|
goto errout;
|
|
|
|
}
|
|
|
|
if (info->xmit.buf)
|
|
|
|
free_page(page);
|
|
|
|
else
|
|
|
|
info->xmit.buf = (unsigned char *) page;
|
|
|
|
|
|
|
|
#ifdef SIMSERIAL_DEBUG
|
|
|
|
printk("startup: ttys%d (irq %d)...", info->line, state->irq);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate the IRQ if necessary
|
|
|
|
*/
|
|
|
|
if (state->irq && (!IRQ_ports[state->irq] ||
|
|
|
|
!IRQ_ports[state->irq]->next_port)) {
|
|
|
|
if (IRQ_ports[state->irq]) {
|
|
|
|
retval = -EBUSY;
|
|
|
|
goto errout;
|
|
|
|
} else
|
|
|
|
handler = rs_interrupt_single;
|
|
|
|
|
|
|
|
retval = request_irq(state->irq, handler, IRQ_T(info), "simserial", NULL);
|
|
|
|
if (retval) {
|
|
|
|
if (capable(CAP_SYS_ADMIN)) {
|
|
|
|
if (info->tty)
|
|
|
|
set_bit(TTY_IO_ERROR,
|
|
|
|
&info->tty->flags);
|
|
|
|
retval = 0;
|
|
|
|
}
|
|
|
|
goto errout;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Insert serial port into IRQ chain.
|
|
|
|
*/
|
2006-10-11 04:46:17 +07:00
|
|
|
info->prev_port = NULL;
|
2005-04-17 05:20:36 +07:00
|
|
|
info->next_port = IRQ_ports[state->irq];
|
|
|
|
if (info->next_port)
|
|
|
|
info->next_port->prev_port = info;
|
|
|
|
IRQ_ports[state->irq] = info;
|
|
|
|
|
|
|
|
if (info->tty) clear_bit(TTY_IO_ERROR, &info->tty->flags);
|
|
|
|
|
|
|
|
info->xmit.head = info->xmit.tail = 0;
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
/*
|
|
|
|
* Set up serial timers...
|
|
|
|
*/
|
|
|
|
timer_table[RS_TIMER].expires = jiffies + 2*HZ/100;
|
|
|
|
timer_active |= 1 << RS_TIMER;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set up the tty->alt_speed kludge
|
|
|
|
*/
|
|
|
|
if (info->tty) {
|
|
|
|
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
|
|
|
|
info->tty->alt_speed = 57600;
|
|
|
|
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
|
|
|
|
info->tty->alt_speed = 115200;
|
|
|
|
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
|
|
|
|
info->tty->alt_speed = 230400;
|
|
|
|
if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
|
|
|
|
info->tty->alt_speed = 460800;
|
|
|
|
}
|
|
|
|
|
|
|
|
info->flags |= ASYNC_INITIALIZED;
|
|
|
|
local_irq_restore(flags);
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
errout:
|
|
|
|
local_irq_restore(flags);
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This routine is called whenever a serial port is opened. It
|
|
|
|
* enables interrupts for a serial port, linking in its async structure into
|
|
|
|
* the IRQ chain. It also performs the serial-specific
|
|
|
|
* initialization for the tty structure.
|
|
|
|
*/
|
|
|
|
static int rs_open(struct tty_struct *tty, struct file * filp)
|
|
|
|
{
|
|
|
|
struct async_struct *info;
|
|
|
|
int retval, line;
|
|
|
|
unsigned long page;
|
|
|
|
|
|
|
|
line = tty->index;
|
|
|
|
if ((line < 0) || (line >= NR_PORTS))
|
|
|
|
return -ENODEV;
|
|
|
|
retval = get_async_struct(line, &info);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
tty->driver_data = info;
|
|
|
|
info->tty = tty;
|
|
|
|
|
|
|
|
#ifdef SIMSERIAL_DEBUG
|
|
|
|
printk("rs_open %s, count = %d\n", tty->name, info->state->count);
|
|
|
|
#endif
|
|
|
|
info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
|
|
|
|
|
|
|
|
if (!tmp_buf) {
|
|
|
|
page = get_zeroed_page(GFP_KERNEL);
|
|
|
|
if (!page)
|
|
|
|
return -ENOMEM;
|
|
|
|
if (tmp_buf)
|
|
|
|
free_page(page);
|
|
|
|
else
|
|
|
|
tmp_buf = (unsigned char *) page;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the port is the middle of closing, bail out now
|
|
|
|
*/
|
|
|
|
if (tty_hung_up_p(filp) ||
|
|
|
|
(info->flags & ASYNC_CLOSING)) {
|
|
|
|
if (info->flags & ASYNC_CLOSING)
|
|
|
|
interruptible_sleep_on(&info->close_wait);
|
|
|
|
#ifdef SERIAL_DO_RESTART
|
|
|
|
return ((info->flags & ASYNC_HUP_NOTIFY) ?
|
|
|
|
-EAGAIN : -ERESTARTSYS);
|
|
|
|
#else
|
|
|
|
return -EAGAIN;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Start up serial port
|
|
|
|
*/
|
|
|
|
retval = startup(info);
|
|
|
|
if (retval) {
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* figure out which console to use (should be one already)
|
|
|
|
*/
|
|
|
|
console = console_drivers;
|
|
|
|
while (console) {
|
|
|
|
if ((console->flags & CON_ENABLED) && console->write) break;
|
|
|
|
console = console->next;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef SIMSERIAL_DEBUG
|
|
|
|
printk("rs_open ttys%d successful\n", info->line);
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* /proc fs routines....
|
|
|
|
*/
|
|
|
|
|
|
|
|
static inline int line_info(char *buf, struct serial_state *state)
|
|
|
|
{
|
|
|
|
return sprintf(buf, "%d: uart:%s port:%lX irq:%d\n",
|
|
|
|
state->line, uart_config[state->type].name,
|
|
|
|
state->port, state->irq);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int rs_read_proc(char *page, char **start, off_t off, int count,
|
|
|
|
int *eof, void *data)
|
|
|
|
{
|
|
|
|
int i, len = 0, l;
|
|
|
|
off_t begin = 0;
|
|
|
|
|
|
|
|
len += sprintf(page, "simserinfo:1.0 driver:%s\n", serial_version);
|
|
|
|
for (i = 0; i < NR_PORTS && len < 4000; i++) {
|
|
|
|
l = line_info(page + len, &rs_table[i]);
|
|
|
|
len += l;
|
|
|
|
if (len+begin > off+count)
|
|
|
|
goto done;
|
|
|
|
if (len+begin < off) {
|
|
|
|
begin += len;
|
|
|
|
len = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
*eof = 1;
|
|
|
|
done:
|
|
|
|
if (off >= len+begin)
|
|
|
|
return 0;
|
|
|
|
*start = page + (begin-off);
|
|
|
|
return ((count < begin+len-off) ? count : begin+len-off);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ---------------------------------------------------------------------
|
|
|
|
* rs_init() and friends
|
|
|
|
*
|
|
|
|
* rs_init() is called at boot-time to initialize the serial driver.
|
|
|
|
* ---------------------------------------------------------------------
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This routine prints out the appropriate serial driver version
|
|
|
|
* number, and identifies which options were configured into this
|
|
|
|
* driver.
|
|
|
|
*/
|
|
|
|
static inline void show_serial_version(void)
|
|
|
|
{
|
|
|
|
printk(KERN_INFO "%s version %s with", serial_name, serial_version);
|
|
|
|
printk(KERN_INFO " no serial options enabled\n");
|
|
|
|
}
|
|
|
|
|
2006-10-02 16:17:18 +07:00
|
|
|
static const struct tty_operations hp_ops = {
|
2005-04-17 05:20:36 +07:00
|
|
|
.open = rs_open,
|
|
|
|
.close = rs_close,
|
|
|
|
.write = rs_write,
|
|
|
|
.put_char = rs_put_char,
|
|
|
|
.flush_chars = rs_flush_chars,
|
|
|
|
.write_room = rs_write_room,
|
|
|
|
.chars_in_buffer = rs_chars_in_buffer,
|
|
|
|
.flush_buffer = rs_flush_buffer,
|
|
|
|
.ioctl = rs_ioctl,
|
|
|
|
.throttle = rs_throttle,
|
|
|
|
.unthrottle = rs_unthrottle,
|
|
|
|
.send_xchar = rs_send_xchar,
|
|
|
|
.set_termios = rs_set_termios,
|
|
|
|
.stop = rs_stop,
|
|
|
|
.start = rs_start,
|
|
|
|
.hangup = rs_hangup,
|
|
|
|
.break_ctl = rs_break,
|
|
|
|
.wait_until_sent = rs_wait_until_sent,
|
|
|
|
.read_proc = rs_read_proc,
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The serial driver boot-time initialization code!
|
|
|
|
*/
|
|
|
|
static int __init
|
|
|
|
simrs_init (void)
|
|
|
|
{
|
2005-07-11 11:49:00 +07:00
|
|
|
int i, rc;
|
2005-04-17 05:20:36 +07:00
|
|
|
struct serial_state *state;
|
|
|
|
|
|
|
|
if (!ia64_platform_is("hpsim"))
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
hp_simserial_driver = alloc_tty_driver(1);
|
|
|
|
if (!hp_simserial_driver)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
show_serial_version();
|
|
|
|
|
|
|
|
/* Initialize the tty_driver structure */
|
|
|
|
|
|
|
|
hp_simserial_driver->owner = THIS_MODULE;
|
|
|
|
hp_simserial_driver->driver_name = "simserial";
|
|
|
|
hp_simserial_driver->name = "ttyS";
|
|
|
|
hp_simserial_driver->major = TTY_MAJOR;
|
|
|
|
hp_simserial_driver->minor_start = 64;
|
|
|
|
hp_simserial_driver->type = TTY_DRIVER_TYPE_SERIAL;
|
|
|
|
hp_simserial_driver->subtype = SERIAL_TYPE_NORMAL;
|
|
|
|
hp_simserial_driver->init_termios = tty_std_termios;
|
|
|
|
hp_simserial_driver->init_termios.c_cflag =
|
|
|
|
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
|
|
|
|
hp_simserial_driver->flags = TTY_DRIVER_REAL_RAW;
|
|
|
|
tty_set_operations(hp_simserial_driver, &hp_ops);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Let's have a little bit of fun !
|
|
|
|
*/
|
|
|
|
for (i = 0, state = rs_table; i < NR_PORTS; i++,state++) {
|
|
|
|
|
|
|
|
if (state->type == PORT_UNKNOWN) continue;
|
|
|
|
|
|
|
|
if (!state->irq) {
|
2005-07-11 11:49:00 +07:00
|
|
|
if ((rc = assign_irq_vector(AUTO_ASSIGN)) < 0)
|
|
|
|
panic("%s: out of interrupt vectors!\n",
|
2008-03-05 06:15:00 +07:00
|
|
|
__func__);
|
2005-07-11 11:49:00 +07:00
|
|
|
state->irq = rc;
|
2005-04-17 05:20:36 +07:00
|
|
|
ia64_ssc_connect_irq(KEYBOARD_INTR, state->irq);
|
|
|
|
}
|
|
|
|
|
|
|
|
printk(KERN_INFO "ttyS%d at 0x%04lx (irq = %d) is a %s\n",
|
|
|
|
state->line,
|
|
|
|
state->port, state->irq,
|
|
|
|
uart_config[state->type].name);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (tty_register_driver(hp_simserial_driver))
|
|
|
|
panic("Couldn't register simserial driver\n");
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifndef MODULE
|
|
|
|
__initcall(simrs_init);
|
|
|
|
#endif
|