linux/drivers/char/hvc_tile.c
Chris Metcalf ef06f55a5c arch/tile: catch up on various minor cleanups.
None of these changes fix any actual bugs, but are just various cleanups
that fell out along the way.  In particular, some unused #defines and
includes are removed, PREFETCH_STRIDE is added (the default is right for
our shipping chips, but wrong for our next generation), our tile-specific
prefetching code is removed so the (identical) generic prefetching code
can be used instead, a comment is fixed to be proper GPL and not just a
"paste GPL here" token, a "//" comment is converted to "/* */", etc.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2010-07-06 13:42:15 -04:00

68 lines
1.6 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)
{
hvc_alloc(0, 0, &hvc_tile_get_put_ops, 128);
return 0;
}
device_initcall(hvc_tile_init);