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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/block/aoe/aoemain.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/block/aoe/aoemain.c')
-rw-r--r--drivers/block/aoe/aoemain.c112
1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/block/aoe/aoemain.c b/drivers/block/aoe/aoemain.c
new file mode 100644
index 000000000000..387588a3f4ba
--- /dev/null
+++ b/drivers/block/aoe/aoemain.c
@@ -0,0 +1,112 @@
1/* Copyright (c) 2004 Coraid, Inc. See COPYING for GPL terms. */
2/*
3 * aoemain.c
4 * Module initialization routines, discover timer
5 */
6
7#include <linux/hdreg.h>
8#include <linux/blkdev.h>
9#include <linux/module.h>
10#include "aoe.h"
11
12MODULE_LICENSE("GPL");
13MODULE_AUTHOR("Sam Hopkins <sah@coraid.com>");
14MODULE_DESCRIPTION("AoE block/char driver for 2.6.[0-9]+");
15MODULE_VERSION(VERSION);
16
17enum { TINIT, TRUN, TKILL };
18
19static void
20discover_timer(ulong vp)
21{
22 static struct timer_list t;
23 static volatile ulong die;
24 static spinlock_t lock;
25 ulong flags;
26 enum { DTIMERTICK = HZ * 60 }; /* one minute */
27
28 switch (vp) {
29 case TINIT:
30 init_timer(&t);
31 spin_lock_init(&lock);
32 t.data = TRUN;
33 t.function = discover_timer;
34 die = 0;
35 case TRUN:
36 spin_lock_irqsave(&lock, flags);
37 if (!die) {
38 t.expires = jiffies + DTIMERTICK;
39 add_timer(&t);
40 }
41 spin_unlock_irqrestore(&lock, flags);
42
43 aoecmd_cfg(0xffff, 0xff);
44 return;
45 case TKILL:
46 spin_lock_irqsave(&lock, flags);
47 die = 1;
48 spin_unlock_irqrestore(&lock, flags);
49
50 del_timer_sync(&t);
51 default:
52 return;
53 }
54}
55
56static void
57aoe_exit(void)
58{
59 discover_timer(TKILL);
60
61 aoenet_exit();
62 unregister_blkdev(AOE_MAJOR, DEVICE_NAME);
63 aoechr_exit();
64 aoedev_exit();
65 aoeblk_exit(); /* free cache after de-allocating bufs */
66}
67
68static int __init
69aoe_init(void)
70{
71 int ret;
72
73 ret = aoedev_init();
74 if (ret)
75 return ret;
76 ret = aoechr_init();
77 if (ret)
78 goto chr_fail;
79 ret = aoeblk_init();
80 if (ret)
81 goto blk_fail;
82 ret = aoenet_init();
83 if (ret)
84 goto net_fail;
85 ret = register_blkdev(AOE_MAJOR, DEVICE_NAME);
86 if (ret < 0) {
87 printk(KERN_ERR "aoe: aoeblk_init: can't register major\n");
88 goto blkreg_fail;
89 }
90
91 printk(KERN_INFO
92 "aoe: aoe_init: AoE v2.6-%s initialised.\n",
93 VERSION);
94 discover_timer(TINIT);
95 return 0;
96
97 blkreg_fail:
98 aoenet_exit();
99 net_fail:
100 aoeblk_exit();
101 blk_fail:
102 aoechr_exit();
103 chr_fail:
104 aoedev_exit();
105
106 printk(KERN_INFO "aoe: aoe_init: initialisation failure.\n");
107 return ret;
108}
109
110module_init(aoe_init);
111module_exit(aoe_exit);
112