#include <linux/fcntl.h>
#include <linux/mm.h>
#include <linux/slab.h>
+#include <linux/capability.h>
#include <linux/console.h>
#include <linux/module.h>
#include <linux/serial.h>
#include <linux/serialP.h>
+#include <linux/sysrq.h>
#include <asm/irq.h>
#include <asm/hw_irq.h>
#define KEYBOARD_INTR 3 /* must match with simulator! */
#define NR_PORTS 1 /* only one port for now */
-#define SERIAL_INLINE 1
-
-#ifdef SERIAL_INLINE
-#define _INLINE_ inline
-#endif
#define IRQ_T(info) ((info->flags & ASYNC_SHARE_IRQ) ? SA_SHIRQ : SA_INTERRUPT)
static struct console *console;
static unsigned char *tmp_buf;
-static DECLARE_MUTEX(tmp_buf_sem);
extern struct console *console_drivers; /* from kernel/printk.c */
static void rs_start(struct tty_struct *tty)
{
-#if SIMSERIAL_DEBUG
+#ifdef SIMSERIAL_DEBUG
printk("rs_start: tty->stopped=%d tty->hw_stopped=%d tty->flow_stopped=%d\n",
tty->stopped, tty->hw_stopped, tty->flow_stopped);
#endif
seen_esc = 2;
continue;
} else if ( seen_esc == 2 ) {
- if ( ch == 'P' ) show_state(); /* F1 key */
-#ifdef CONFIG_KDB
- if ( ch == 'S' )
- kdb(KDB_REASON_KEYBOARD, 0, (kdb_eframe_t) regs);
+ 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);
+ handle_sysrq(ch, regs, NULL);
+ }
#endif
-
seen_esc = 0;
continue;
}
}
seen_esc = 0;
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) break;
- *tty->flip.char_buf_ptr = ch;
-
- *tty->flip.flag_buf_ptr = 0;
-
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
+ if (tty_insert_flip_char(tty, ch, TTY_NORMAL) == 0)
+ break;
}
tty_flip_buffer_push(tty);
}
local_irq_restore(flags);
}
-static _INLINE_ void transmit_chars(struct async_struct *info, int *intr_done)
+static void transmit_chars(struct async_struct *info, int *intr_done)
{
int count;
unsigned long flags;
}
-static int rs_write(struct tty_struct * tty, int from_user,
+static int rs_write(struct tty_struct * tty,
const unsigned char *buf, int count)
{
int c, ret = 0;
if (!tty || !info->xmit.buf || !tmp_buf) return 0;
- if (from_user) {
- down(&tmp_buf_sem);
- while (1) {
- int c1;
- c = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE);
- if (count < c)
- c = count;
- if (c <= 0)
- break;
-
- c -= copy_from_user(tmp_buf, buf, c);
- if (!c) {
- if (!ret)
- ret = -EFAULT;
- break;
- }
-
- local_irq_save(flags);
- {
- c1 = CIRC_SPACE_TO_END(info->xmit.head, info->xmit.tail,
- SERIAL_XMIT_SIZE);
- if (c1 < c)
- c = c1;
- memcpy(info->xmit.buf + info->xmit.head, tmp_buf, c);
- info->xmit.head = ((info->xmit.head + c) &
- (SERIAL_XMIT_SIZE-1));
- }
- local_irq_restore(flags);
-
- buf += c;
- count -= c;
- ret += c;
- }
- up(&tmp_buf_sem);
- } else {
- 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_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;
}
- local_irq_restore(flags);
+ 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
*/
info->event = 0;
info->tty = 0;
if (info->blocked_open) {
- if (info->close_delay) {
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(info->close_delay);
- }
+ if (info->close_delay)
+ schedule_timeout_interruptible(info->close_delay);
wake_up_interruptible(&info->open_wait);
}
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
static int __init
simrs_init (void)
{
- int i;
+ int i, rc;
struct serial_state *state;
if (!ia64_platform_is("hpsim"))
if (state->type == PORT_UNKNOWN) continue;
if (!state->irq) {
- state->irq = assign_irq_vector(AUTO_ASSIGN);
+ if ((rc = assign_irq_vector(AUTO_ASSIGN)) < 0)
+ panic("%s: out of interrupt vectors!\n",
+ __FUNCTION__);
+ state->irq = rc;
ia64_ssc_connect_irq(KEYBOARD_INTR, state->irq);
}