mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-24 02:18:54 +00:00
112 lines
2.0 KiB
C
112 lines
2.0 KiB
C
/* Copyright (c) 2007 Coraid, Inc. See COPYING for GPL terms. */
|
|
/*
|
|
* aoemain.c
|
|
* Module initialization routines, discover timer
|
|
*/
|
|
|
|
#include <linux/hdreg.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/module.h>
|
|
#include <linux/skbuff.h>
|
|
#include "aoe.h"
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Sam Hopkins <sah@coraid.com>");
|
|
MODULE_DESCRIPTION("AoE block/char driver for 2.6.2 and newer 2.6 kernels");
|
|
MODULE_VERSION(VERSION);
|
|
|
|
enum { TINIT, TRUN, TKILL };
|
|
|
|
static void
|
|
discover_timer(ulong vp)
|
|
{
|
|
static struct timer_list t;
|
|
static volatile ulong die;
|
|
static spinlock_t lock;
|
|
ulong flags;
|
|
enum { DTIMERTICK = HZ * 60 }; /* one minute */
|
|
|
|
switch (vp) {
|
|
case TINIT:
|
|
init_timer(&t);
|
|
spin_lock_init(&lock);
|
|
t.data = TRUN;
|
|
t.function = discover_timer;
|
|
die = 0;
|
|
case TRUN:
|
|
spin_lock_irqsave(&lock, flags);
|
|
if (!die) {
|
|
t.expires = jiffies + DTIMERTICK;
|
|
add_timer(&t);
|
|
}
|
|
spin_unlock_irqrestore(&lock, flags);
|
|
|
|
aoecmd_cfg(0xffff, 0xff);
|
|
return;
|
|
case TKILL:
|
|
spin_lock_irqsave(&lock, flags);
|
|
die = 1;
|
|
spin_unlock_irqrestore(&lock, flags);
|
|
|
|
del_timer_sync(&t);
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void
|
|
aoe_exit(void)
|
|
{
|
|
discover_timer(TKILL);
|
|
|
|
aoenet_exit();
|
|
unregister_blkdev(AOE_MAJOR, DEVICE_NAME);
|
|
aoechr_exit();
|
|
aoedev_exit();
|
|
aoeblk_exit(); /* free cache after de-allocating bufs */
|
|
}
|
|
|
|
static int __init
|
|
aoe_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = aoedev_init();
|
|
if (ret)
|
|
return ret;
|
|
ret = aoechr_init();
|
|
if (ret)
|
|
goto chr_fail;
|
|
ret = aoeblk_init();
|
|
if (ret)
|
|
goto blk_fail;
|
|
ret = aoenet_init();
|
|
if (ret)
|
|
goto net_fail;
|
|
ret = register_blkdev(AOE_MAJOR, DEVICE_NAME);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "aoe: can't register major\n");
|
|
goto blkreg_fail;
|
|
}
|
|
|
|
printk(KERN_INFO "aoe: AoE v%s initialised.\n", VERSION);
|
|
discover_timer(TINIT);
|
|
return 0;
|
|
|
|
blkreg_fail:
|
|
aoenet_exit();
|
|
net_fail:
|
|
aoeblk_exit();
|
|
blk_fail:
|
|
aoechr_exit();
|
|
chr_fail:
|
|
aoedev_exit();
|
|
|
|
printk(KERN_INFO "aoe: initialisation failure.\n");
|
|
return ret;
|
|
}
|
|
|
|
module_init(aoe_init);
|
|
module_exit(aoe_exit);
|
|
|