1fea05a26SEd Cashin /* Copyright (c) 2012 Coraid, Inc. See COPYING for GPL terms. */
21da177e4SLinus Torvalds /*
31da177e4SLinus Torvalds * aoemain.c
41da177e4SLinus Torvalds * Module initialization routines, discover timer
51da177e4SLinus Torvalds */
61da177e4SLinus Torvalds
71da177e4SLinus Torvalds #include <linux/hdreg.h>
81da177e4SLinus Torvalds #include <linux/blkdev.h>
91da177e4SLinus Torvalds #include <linux/module.h>
10e9bb8fb0SDavid S. Miller #include <linux/skbuff.h>
111da177e4SLinus Torvalds #include "aoe.h"
121da177e4SLinus Torvalds
131da177e4SLinus Torvalds MODULE_LICENSE("GPL");
141da177e4SLinus Torvalds MODULE_AUTHOR("Sam Hopkins <sah@coraid.com>");
1502edb05eSEd L. Cashin MODULE_DESCRIPTION("AoE block/char driver for 2.6.2 and newer 2.6 kernels");
161da177e4SLinus Torvalds MODULE_VERSION(VERSION);
171da177e4SLinus Torvalds
185ea22086SKees Cook static struct timer_list timer;
19*0b8d7622STetsuo Handa struct workqueue_struct *aoe_wq;
201da177e4SLinus Torvalds
discover_timer(struct timer_list * t)215ea22086SKees Cook static void discover_timer(struct timer_list *t)
221da177e4SLinus Torvalds {
235ea22086SKees Cook mod_timer(t, jiffies + HZ * 60); /* one minute */
241da177e4SLinus Torvalds
251da177e4SLinus Torvalds aoecmd_cfg(0xffff, 0xff);
261da177e4SLinus Torvalds }
271da177e4SLinus Torvalds
28e7cc005fSChengguang Xu static void __exit
aoe_exit(void)291da177e4SLinus Torvalds aoe_exit(void)
301da177e4SLinus Torvalds {
315ea22086SKees Cook del_timer_sync(&timer);
321da177e4SLinus Torvalds
331da177e4SLinus Torvalds aoenet_exit();
341da177e4SLinus Torvalds unregister_blkdev(AOE_MAJOR, DEVICE_NAME);
35896831f5SEd Cashin aoecmd_exit();
361da177e4SLinus Torvalds aoechr_exit();
371da177e4SLinus Torvalds aoedev_exit();
381da177e4SLinus Torvalds aoeblk_exit(); /* free cache after de-allocating bufs */
39*0b8d7622STetsuo Handa destroy_workqueue(aoe_wq);
401da177e4SLinus Torvalds }
411da177e4SLinus Torvalds
421da177e4SLinus Torvalds static int __init
aoe_init(void)431da177e4SLinus Torvalds aoe_init(void)
441da177e4SLinus Torvalds {
451da177e4SLinus Torvalds int ret;
461da177e4SLinus Torvalds
47*0b8d7622STetsuo Handa aoe_wq = alloc_workqueue("aoe_wq", 0, 0);
48*0b8d7622STetsuo Handa if (!aoe_wq)
49*0b8d7622STetsuo Handa return -ENOMEM;
50*0b8d7622STetsuo Handa
511da177e4SLinus Torvalds ret = aoedev_init();
521da177e4SLinus Torvalds if (ret)
53*0b8d7622STetsuo Handa goto dev_fail;
541da177e4SLinus Torvalds ret = aoechr_init();
551da177e4SLinus Torvalds if (ret)
561da177e4SLinus Torvalds goto chr_fail;
571da177e4SLinus Torvalds ret = aoeblk_init();
581da177e4SLinus Torvalds if (ret)
591da177e4SLinus Torvalds goto blk_fail;
601da177e4SLinus Torvalds ret = aoenet_init();
611da177e4SLinus Torvalds if (ret)
621da177e4SLinus Torvalds goto net_fail;
63896831f5SEd Cashin ret = aoecmd_init();
64896831f5SEd Cashin if (ret)
65896831f5SEd Cashin goto cmd_fail;
661da177e4SLinus Torvalds ret = register_blkdev(AOE_MAJOR, DEVICE_NAME);
671da177e4SLinus Torvalds if (ret < 0) {
68a12c93f0SEd L. Cashin printk(KERN_ERR "aoe: can't register major\n");
691da177e4SLinus Torvalds goto blkreg_fail;
701da177e4SLinus Torvalds }
71a12c93f0SEd L. Cashin printk(KERN_INFO "aoe: AoE v%s initialised.\n", VERSION);
725ea22086SKees Cook
735ea22086SKees Cook timer_setup(&timer, discover_timer, 0);
745ea22086SKees Cook discover_timer(&timer);
751da177e4SLinus Torvalds return 0;
761da177e4SLinus Torvalds blkreg_fail:
77896831f5SEd Cashin aoecmd_exit();
78896831f5SEd Cashin cmd_fail:
791da177e4SLinus Torvalds aoenet_exit();
801da177e4SLinus Torvalds net_fail:
811da177e4SLinus Torvalds aoeblk_exit();
821da177e4SLinus Torvalds blk_fail:
831da177e4SLinus Torvalds aoechr_exit();
841da177e4SLinus Torvalds chr_fail:
851da177e4SLinus Torvalds aoedev_exit();
86*0b8d7622STetsuo Handa dev_fail:
87*0b8d7622STetsuo Handa destroy_workqueue(aoe_wq);
881da177e4SLinus Torvalds
89a12c93f0SEd L. Cashin printk(KERN_INFO "aoe: initialisation failure.\n");
901da177e4SLinus Torvalds return ret;
911da177e4SLinus Torvalds }
921da177e4SLinus Torvalds
931da177e4SLinus Torvalds module_init(aoe_init);
941da177e4SLinus Torvalds module_exit(aoe_exit);
951da177e4SLinus Torvalds
96