Staging: hv: hv_mouse: unwind the initialization process a bit
[zen-stable.git] / arch / powerpc / include / asm / pmi.h
blobb4e91fbf5081ab79533856a12f3370d42218499a
1 #ifndef _POWERPC_PMI_H
2 #define _POWERPC_PMI_H
4 /*
5 * Definitions for talking with PMI device on PowerPC
7 * PMI (Platform Management Interrupt) is a way to communicate
8 * with the BMC (Baseboard Management Controller) via interrupts.
9 * Unlike IPMI it is bidirectional and has a low latency.
11 * (C) Copyright IBM Deutschland Entwicklung GmbH 2005
13 * Author: Christian Krafft <krafft@de.ibm.com>
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2, or (at your option)
18 * any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 #ifdef __KERNEL__
32 #define PMI_TYPE_FREQ_CHANGE 0x01
33 #define PMI_TYPE_POWER_BUTTON 0x02
34 #define PMI_READ_TYPE 0
35 #define PMI_READ_DATA0 1
36 #define PMI_READ_DATA1 2
37 #define PMI_READ_DATA2 3
38 #define PMI_WRITE_TYPE 4
39 #define PMI_WRITE_DATA0 5
40 #define PMI_WRITE_DATA1 6
41 #define PMI_WRITE_DATA2 7
43 #define PMI_ACK 0x80
45 #define PMI_TIMEOUT 100
47 typedef struct {
48 u8 type;
49 u8 data0;
50 u8 data1;
51 u8 data2;
52 } pmi_message_t;
54 struct pmi_handler {
55 struct list_head node;
56 u8 type;
57 void (*handle_pmi_message) (pmi_message_t);
60 int pmi_register_handler(struct pmi_handler *);
61 void pmi_unregister_handler(struct pmi_handler *);
63 int pmi_send_message(pmi_message_t);
65 #endif /* __KERNEL__ */
66 #endif /* _POWERPC_PMI_H */