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/arch/ia64/hp/sim/hpsim_console.c

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C | 76 lines | 57 code | 12 blank | 7 comment | 5 complexity | 8d24128239cde00fa940e6563df25dcf MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 1/*
 2 * Platform dependent support for HP simulator.
 3 *
 4 * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co
 5 *	David Mosberger-Tang <davidm@hpl.hp.com>
 6 * Copyright (C) 1999 Vijay Chander <vijay@engr.sgi.com>
 7 */
 8
 9#include <linux/init.h>
10#include <linux/kernel.h>
11#include <linux/param.h>
12#include <linux/string.h>
13#include <linux/types.h>
14#include <linux/tty.h>
15#include <linux/kdev_t.h>
16#include <linux/console.h>
17
18#include <asm/delay.h>
19#include <asm/irq.h>
20#include <asm/pal.h>
21#include <asm/machvec.h>
22#include <asm/pgtable.h>
23#include <asm/sal.h>
24#include <asm/hpsim.h>
25
26#include "hpsim_ssc.h"
27
28static int simcons_init (struct console *, char *);
29static void simcons_write (struct console *, const char *, unsigned);
30static struct tty_driver *simcons_console_device (struct console *, int *);
31
32static struct console hpsim_cons = {
33	.name =		"simcons",
34	.write =	simcons_write,
35	.device =	simcons_console_device,
36	.setup =	simcons_init,
37	.flags =	CON_PRINTBUFFER,
38	.index =	-1,
39};
40
41static int
42simcons_init (struct console *cons, char *options)
43{
44	return 0;
45}
46
47static void
48simcons_write (struct console *cons, const char *buf, unsigned count)
49{
50	unsigned long ch;
51
52	while (count-- > 0) {
53		ch = *buf++;
54		ia64_ssc(ch, 0, 0, 0, SSC_PUTCHAR);
55		if (ch == '\n')
56		  ia64_ssc('\r', 0, 0, 0, SSC_PUTCHAR);
57	}
58}
59
60static struct tty_driver *simcons_console_device (struct console *c, int *index)
61{
62	*index = c->index;
63	return hp_simserial_driver;
64}
65
66int simcons_register(void)
67{
68	if (!ia64_platform_is("hpsim"))
69		return 1;
70
71	if (hpsim_cons.flags & CON_ENABLED)
72		return 1;
73
74	register_console(&hpsim_cons);
75	return 0;
76}