*
* rs_set_termios fixed to look also for changes of the input
* flags INPCK, BRKINT, PARMRK, IGNPAR and IGNBRK.
- * Bernd Anh�pl 05/17/96.
+ * Bernd Anhäupl 05/17/96.
*
* --- End of notices from serial.c ---
*
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/delay.h>
+#include <linux/bitops.h>
#include <asm/system.h>
#include <asm/io.h>
-#include <asm/bitops.h>
#include <asm/dma.h>
#include <linux/slab.h>
static struct tty_driver *esp_driver;
-/* serial subtype definitions */
-#define SERIAL_TYPE_NORMAL 1
-
/*
* Serial driver configuration section. Here are the various options:
*
* -----------------------------------------------------------------------
*/
-/*
- * This routine is used by the interrupt handler to schedule
- * processing in the software interrupt portion of the driver.
- */
-static inline void rs_sched_event(struct esp_struct *info,
- int event)
-{
- info->event |= 1 << event;
- schedule_work(&info->tqueue);
-}
-
static DEFINE_SPINLOCK(pio_lock);
static inline struct esp_pio_buffer *get_pio_buffer(void)
}
if (info->xmit_cnt < WAKEUP_CHARS) {
- rs_sched_event(info, ESP_EVENT_WRITE_WAKEUP);
+ if (info->tty)
+ tty_wakeup(info->tty);
#ifdef SERIAL_DEBUG_INTR
printk("THRE...");
info->xmit_tail = (info->xmit_tail + dma_bytes) & (ESP_XMIT_SIZE - 1);
if (info->xmit_cnt < WAKEUP_CHARS) {
- rs_sched_event(info, ESP_EVENT_WRITE_WAKEUP);
+ if (info->tty)
+ tty_wakeup(info->tty);
#ifdef SERIAL_DEBUG_INTR
printk("THRE...");
#ifdef SERIAL_DEBUG_OPEN
printk("scheduling hangup...");
#endif
- schedule_work(&info->tqueue_hangup);
+ tty_hangup(info->tty);
}
}
}
* -------------------------------------------------------------------
*/
-static void do_softint(struct work_struct *work)
-{
- struct esp_struct *info =
- container_of(work, struct esp_struct, tqueue);
- struct tty_struct *tty;
-
- tty = info->tty;
- if (!tty)
- return;
-
- if (test_and_clear_bit(ESP_EVENT_WRITE_WAKEUP, &info->event)) {
- tty_wakeup(tty);
- }
-}
-
-/*
- * This routine is called from the scheduler tqueue when the interrupt
- * routine has signalled that a hangup has occurred. The path of
- * hangup processing is:
- *
- * serial interrupt routine -> (scheduler tqueue) ->
- * do_serial_hangup() -> tty->hangup() -> esp_hangup()
- *
- */
-static void do_serial_hangup(struct work_struct *work)
-{
- struct esp_struct *info =
- container_of(work, struct esp_struct, tqueue_hangup);
- struct tty_struct *tty;
-
- tty = info->tty;
- if (tty)
- tty_hangup(tty);
-}
-
/*
* ---------------------------------------------------------------
* Low level utility subroutines for the serial driver: routines to
/*
* Set up parity check flag
*/
-#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
-
info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
if (I_INPCK(info->tty))
info->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
unsigned long flags;
- if ( (tty->termios->c_cflag == old_termios->c_cflag)
- && ( RELEVANT_IFLAG(tty->termios->c_iflag)
- == RELEVANT_IFLAG(old_termios->c_iflag)))
- return;
-
change_speed(info);
spin_lock_irqsave(&info->lock, flags);
tty->driver->flush_buffer(tty);
tty_ldisc_flush(tty);
tty->closing = 0;
- info->event = 0;
info->tty = NULL;
if (info->blocked_open) {
rs_flush_buffer(tty);
shutdown(info);
- info->event = 0;
info->count = 0;
info->flags &= ~ASYNC_NORMAL_ACTIVE;
info->tty = NULL;
return 1;
}
- info = kmalloc(sizeof(struct esp_struct), GFP_KERNEL);
+ info = kzalloc(sizeof(struct esp_struct), GFP_KERNEL);
if (!info)
{
return 1;
}
- memset((void *)info, 0, sizeof(struct esp_struct));
spin_lock_init(&info->lock);
/* rx_trigger, tx_trigger are needed by autoconfig */
info->config.rx_trigger = rx_trigger;
info->magic = ESP_MAGIC;
info->close_delay = 5*HZ/10;
info->closing_wait = 30*HZ;
- INIT_WORK(&info->tqueue, do_softint);
- INIT_WORK(&info->tqueue_hangup, do_serial_hangup);
info->config.rx_timeout = rx_timeout;
info->config.flow_on = flow_on;
info->config.flow_off = flow_off;
if (!dma)
info->stat_flags |= ESP_STAT_NEVER_DMA;
- info = kmalloc(sizeof(struct esp_struct), GFP_KERNEL);
+ info = kzalloc(sizeof(struct esp_struct), GFP_KERNEL);
if (!info)
{
printk(KERN_ERR "Couldn't allocate memory for esp serial device information\n");
return 0;
}
- memset((void *)info, 0, sizeof(struct esp_struct));
/* rx_trigger, tx_trigger are needed by autoconfig */
info->config.rx_trigger = rx_trigger;
info->config.tx_trigger = tx_trigger;