Contributors: 8
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| David Gibson |
243 |
87.10% |
1 |
11.11% |
| Benjamin Herrenschmidt |
20 |
7.17% |
1 |
11.11% |
| Jiri Slaby (SUSE) |
10 |
3.58% |
1 |
11.11% |
| Greg Kroah-Hartman |
2 |
0.72% |
2 |
22.22% |
| Alan Cox |
1 |
0.36% |
1 |
11.11% |
| Rusty Russell |
1 |
0.36% |
1 |
11.11% |
| Paul Gortmaker |
1 |
0.36% |
1 |
11.11% |
| yu kuai |
1 |
0.36% |
1 |
11.11% |
| Total |
279 |
|
9 |
|
// SPDX-License-Identifier: GPL-2.0+
/*
* udbg interface to hvc_console.c
*
* (C) Copyright David Gibson, IBM Corporation 2008.
*/
#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"
static struct hvc_struct *hvc_udbg_dev;
static ssize_t hvc_udbg_put(uint32_t vtermno, const u8 *buf, size_t count)
{
size_t i;
for (i = 0; i < count && udbg_putc; i++)
udbg_putc(buf[i]);
return i;
}
static ssize_t hvc_udbg_get(uint32_t vtermno, u8 *buf, size_t count)
{
size_t i;
int 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);