This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / block / aoe / aoemain.c

diff --git a/drivers/block/aoe/aoemain.c b/drivers/block/aoe/aoemain.c
new file mode 100644 (file)
index 0000000..387588a
--- /dev/null
+++ b/drivers/block/aoe/aoemain.c
@@ -0,0 +1,112 @@
+/* Copyright (c) 2004 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 "aoe.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Sam Hopkins <sah@coraid.com>");
+MODULE_DESCRIPTION("AoE block/char driver for 2.6.[0-9]+");
+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: aoeblk_init: can't register major\n");
+               goto blkreg_fail;
+       }
+
+       printk(KERN_INFO
+              "aoe: aoe_init: AoE v2.6-%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: aoe_init: initialisation failure.\n");
+       return ret;
+}
+
+module_init(aoe_init);
+module_exit(aoe_exit);
+