1 /*
2  *  PS3 System Manager core.
3  *
4  *  Copyright (C) 2007 Sony Computer Entertainment Inc.
5  *  Copyright 2007 Sony Corp.
6  *
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; version 2 of the License.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, write to the Free Software
18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  */
20 
21 #include <linux/kernel.h>
22 #include <asm/lv1call.h>
23 #include <asm/ps3.h>
24 
25 /**
26  * Staticly linked routines that allow late binding of a loaded sys-manager
27  * module.
28  */
29 
30 static struct ps3_sys_manager_ops ps3_sys_manager_ops;
31 
32 /**
33  * ps3_register_sys_manager_ops - Bind ps3_sys_manager_ops to a module.
34  * @ops: struct ps3_sys_manager_ops.
35  *
36  * To be called from ps3_sys_manager_probe() and ps3_sys_manager_remove() to
37  * register call back ops for power control.  Copies data to the static
38  * variable ps3_sys_manager_ops.
39  */
40 
ps3_sys_manager_register_ops(const struct ps3_sys_manager_ops * ops)41 void ps3_sys_manager_register_ops(const struct ps3_sys_manager_ops *ops)
42 {
43 	BUG_ON(!ops);
44 	BUG_ON(!ops->dev);
45 	ps3_sys_manager_ops = ops ? *ops : ps3_sys_manager_ops;
46 }
47 EXPORT_SYMBOL_GPL(ps3_sys_manager_register_ops);
48 
ps3_sys_manager_power_off(void)49 void ps3_sys_manager_power_off(void)
50 {
51 	if (ps3_sys_manager_ops.power_off)
52 		ps3_sys_manager_ops.power_off(ps3_sys_manager_ops.dev);
53 
54 	ps3_sys_manager_halt();
55 }
56 
ps3_sys_manager_restart(void)57 void ps3_sys_manager_restart(void)
58 {
59 	if (ps3_sys_manager_ops.restart)
60 		ps3_sys_manager_ops.restart(ps3_sys_manager_ops.dev);
61 
62 	ps3_sys_manager_halt();
63 }
64 
ps3_sys_manager_halt(void)65 void ps3_sys_manager_halt(void)
66 {
67 	pr_emerg("System Halted, OK to turn off power\n");
68 	local_irq_disable();
69 	while (1)
70 		lv1_pause(1);
71 }
72 
73