728674a7e4
As requested by Arnd Bergmann, the hvc drivers are now moved to the drivers/tty/hvc/ directory. The virtio_console.c driver was also moved, as it required the hvc_console.h file to be able to be built, and it really is a hvc driver. Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/*
|
|
* Copyright 2010 Tilera Corporation. All Rights Reserved.
|
|
*
|
|
* 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, version 2.
|
|
*
|
|
* 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, GOOD TITLE or
|
|
* NON INFRINGEMENT. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* Tilera TILE Processor hypervisor console
|
|
*/
|
|
|
|
#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 <hv/hypervisor.h>
|
|
|
|
#include "hvc_console.h"
|
|
|
|
static int hvc_tile_put_chars(uint32_t vt, const char *buf, int count)
|
|
{
|
|
return hv_console_write((HV_VirtAddr)buf, count);
|
|
}
|
|
|
|
static int hvc_tile_get_chars(uint32_t vt, char *buf, int count)
|
|
{
|
|
int i, c;
|
|
|
|
for (i = 0; i < count; ++i) {
|
|
c = hv_console_read_if_ready();
|
|
if (c < 0)
|
|
break;
|
|
buf[i] = c;
|
|
}
|
|
|
|
return i;
|
|
}
|
|
|
|
static const struct hv_ops hvc_tile_get_put_ops = {
|
|
.get_chars = hvc_tile_get_chars,
|
|
.put_chars = hvc_tile_put_chars,
|
|
};
|
|
|
|
static int __init hvc_tile_console_init(void)
|
|
{
|
|
extern void disable_early_printk(void);
|
|
hvc_instantiate(0, 0, &hvc_tile_get_put_ops);
|
|
add_preferred_console("hvc", 0, NULL);
|
|
disable_early_printk();
|
|
return 0;
|
|
}
|
|
console_initcall(hvc_tile_console_init);
|
|
|
|
static int __init hvc_tile_init(void)
|
|
{
|
|
struct hvc_struct *s;
|
|
s = hvc_alloc(0, 0, &hvc_tile_get_put_ops, 128);
|
|
return IS_ERR(s) ? PTR_ERR(s) : 0;
|
|
}
|
|
device_initcall(hvc_tile_init);
|