| #ifndef _POWERPC_PMI_H |
| #define _POWERPC_PMI_H |
| |
| /* |
| * Definitions for talking with PMI device on PowerPC |
| * |
| * PMI (Platform Management Interrupt) is a way to communicate |
| * with the BMC (Baseboard Management Controller) via interrupts. |
| * Unlike IPMI it is bidirectional and has a low latency. |
| * |
| * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 |
| * |
| * Author: Christian Krafft <krafft@de.ibm.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #ifdef __KERNEL__ |
| |
| #include <asm/of_device.h> |
| |
| #define PMI_TYPE_FREQ_CHANGE 0x01 |
| #define PMI_READ_TYPE 0 |
| #define PMI_READ_DATA0 1 |
| #define PMI_READ_DATA1 2 |
| #define PMI_READ_DATA2 3 |
| #define PMI_WRITE_TYPE 4 |
| #define PMI_WRITE_DATA0 5 |
| #define PMI_WRITE_DATA1 6 |
| #define PMI_WRITE_DATA2 7 |
| |
| #define PMI_ACK 0x80 |
| |
| #define PMI_TIMEOUT 100 |
| |
| typedef struct { |
| u8 type; |
| u8 data0; |
| u8 data1; |
| u8 data2; |
| } pmi_message_t; |
| |
| struct pmi_handler { |
| struct list_head node; |
| u8 type; |
| void (*handle_pmi_message) (pmi_message_t); |
| }; |
| |
| int pmi_register_handler(struct pmi_handler *); |
| void pmi_unregister_handler(struct pmi_handler *); |
| |
| int pmi_send_message(pmi_message_t); |
| |
| #endif /* __KERNEL__ */ |
| #endif /* _POWERPC_PMI_H */ |