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 <linux/export.h>
23 #include <asm/lv1call.h>
24 #include <asm/ps3.h>
25 
26 /**
27  * Staticly linked routines that allow late binding of a loaded sys-manager
28  * module.
29  */
30 
31 static struct ps3_sys_manager_ops ps3_sys_manager_ops;
32 
33 /**
34  * ps3_register_sys_manager_ops - Bind ps3_sys_manager_ops to a module.
35  * @ops: struct ps3_sys_manager_ops.
36  *
37  * To be called from ps3_sys_manager_probe() and ps3_sys_manager_remove() to
38  * register call back ops for power control.  Copies data to the static
39  * variable ps3_sys_manager_ops.
40  */
41 
ps3_sys_manager_register_ops(const struct ps3_sys_manager_ops * ops)42 void ps3_sys_manager_register_ops(const struct ps3_sys_manager_ops *ops)
43 {
44 	BUG_ON(!ops);
45 	BUG_ON(!ops->dev);
46 	ps3_sys_manager_ops = ops ? *ops : ps3_sys_manager_ops;
47 }
48 EXPORT_SYMBOL_GPL(ps3_sys_manager_register_ops);
49 
ps3_sys_manager_power_off(void)50 void __noreturn ps3_sys_manager_power_off(void)
51 {
52 	if (ps3_sys_manager_ops.power_off)
53 		ps3_sys_manager_ops.power_off(ps3_sys_manager_ops.dev);
54 
55 	ps3_sys_manager_halt();
56 }
57 
ps3_sys_manager_restart(void)58 void __noreturn ps3_sys_manager_restart(void)
59 {
60 	if (ps3_sys_manager_ops.restart)
61 		ps3_sys_manager_ops.restart(ps3_sys_manager_ops.dev);
62 
63 	ps3_sys_manager_halt();
64 }
65 
ps3_sys_manager_halt(void)66 void __noreturn ps3_sys_manager_halt(void)
67 {
68 	pr_emerg("System Halted, OK to turn off power\n");
69 	local_irq_disable();
70 	while (1)
71 		lv1_pause(1);
72 }
73 
74