diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /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.c | 112 |
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 @@ +/* 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); + |