Viewing file:  hpsim_console.c (1.54 KB) -rw-r--r--
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/*
* Platform dependent support for HP simulator.
*
* Copyright (C) 1998, 1999 Hewlett-Packard Co
* Copyright (C) 1998, 1999 David Mosberger-Tang <davidm@hpl.hp.com>
* Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/kdev_t.h>
#include <linux/console.h>
#include <asm/delay.h>
#include <asm/irq.h>
#include <asm/pal.h>
#include <asm/machvec.h>
#include <asm/pgtable.h>
#include <asm/sal.h>
#include "hpsim_ssc.h"
static int simcons_init (struct console *, char *);
static void simcons_write (struct console *, const char *, unsigned);
static int simcons_wait_key (struct console *);
static kdev_t simcons_console_device (struct console *);
struct console hpsim_cons = {
name: "simcons",
write: simcons_write,
device: simcons_console_device,
wait_key: simcons_wait_key,
setup: simcons_init,
flags: CON_PRINTBUFFER,
index: -1,
};
static int
simcons_init (struct console *cons, char *options)
{
return 0;
}
static void
simcons_write (struct console *cons, const char *buf, unsigned count)
{
unsigned long ch;
while (count-- > 0) {
ch = *buf++;
ia64_ssc(ch, 0, 0, 0, SSC_PUTCHAR);
if (ch == '\n')
ia64_ssc('\r', 0, 0, 0, SSC_PUTCHAR);
}
}
static int
simcons_wait_key (struct console *cons)
{
char ch;
do {
ch = ia64_ssc(0, 0, 0, 0, SSC_GETCHAR);
} while (ch == '\0');
return ch;
}
static kdev_t
simcons_console_device (struct console *c)
{
return MKDEV(TTY_MAJOR, 64 + c->index);
}
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