/*
 * udbg interface to hvc_console.c
 *
 * (C) Copyright David Gibson, IBM Corporation 2008.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <linux/console.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/irq.h>

#include <asm/udbg.h>

#include "hvc_console.h"

struct hvc_struct *hvc_udbg_dev;

static int hvc_udbg_put(uint32_t vtermno, const char *buf, int count)
{
	int i;

	for (i = 0; i < count && udbg_putc; i++)
		udbg_putc(buf[i]);

	return i;
}

static int hvc_udbg_get(uint32_t vtermno, char *buf, int count)
{
	int i, c;

	if (!udbg_getc_poll)
		return 0;

	for (i = 0; i < count; i++) {
		if ((c = udbg_getc_poll()) == -1)
			break;
		buf[i] = c;
	}

	return i;
}

static const struct hv_ops hvc_udbg_ops = {
	.get_chars = hvc_udbg_get,
	.put_chars = hvc_udbg_put,
};

static int __init hvc_udbg_init(void)
{
	struct hvc_struct *hp;

	if (!udbg_putc)
		return -ENODEV;

	BUG_ON(hvc_udbg_dev);

	hp = hvc_alloc(0, 0, &hvc_udbg_ops, 16);
	if (IS_ERR(hp))
		return PTR_ERR(hp);

	hvc_udbg_dev = hp;

	return 0;
}
device_initcall(hvc_udbg_init);

static int __init hvc_udbg_console_init(void)
{
	if (!udbg_putc)
		return -ENODEV;

	hvc_instantiate(0, 0, &hvc_udbg_ops);
	add_preferred_console("hvc", 0, NULL);

	return 0;
}
console_initcall(hvc_udbg_console_init);
27c1c853b335675bee335d893bc3d324b'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/tools/net/bpf_exp.l?h=nds-private-remove&amp;id=71810db27c1c853b335675bee335d893bc3d324b'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/tools/net/bpf_exp.l'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='71810db27c1c853b335675bee335d893bc3d324b'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=71810db27c1c853b335675bee335d893bc3d324b'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools?h=nds-private-remove&amp;id=71810db27c1c853b335675bee335d893bc3d324b'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/net?h=nds-private-remove&amp;id=71810db27c1c853b335675bee335d893bc3d324b'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/net/bpf_exp.l?h=nds-private-remove&amp;id=71810db27c1c853b335675bee335d893bc3d324b'>bpf_exp.l</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/tools/net/bpf_exp.l?h=nds-private-remove&amp;id=71810db27c1c853b335675bee335d893bc3d324b&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>