cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pmi.h (1177B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2#ifndef _POWERPC_PMI_H
      3#define _POWERPC_PMI_H
      4
      5/*
      6 * Definitions for talking with PMI device on PowerPC
      7 *
      8 * PMI (Platform Management Interrupt) is a way to communicate
      9 * with the BMC (Baseboard Management Controller) via interrupts.
     10 * Unlike IPMI it is bidirectional and has a low latency.
     11 *
     12 * (C) Copyright IBM Deutschland Entwicklung GmbH 2005
     13 *
     14 * Author: Christian Krafft <krafft@de.ibm.com>
     15 */
     16
     17#ifdef __KERNEL__
     18
     19#define PMI_TYPE_FREQ_CHANGE	0x01
     20#define PMI_TYPE_POWER_BUTTON	0x02
     21#define PMI_READ_TYPE		0
     22#define PMI_READ_DATA0		1
     23#define PMI_READ_DATA1		2
     24#define PMI_READ_DATA2		3
     25#define PMI_WRITE_TYPE		4
     26#define PMI_WRITE_DATA0		5
     27#define PMI_WRITE_DATA1		6
     28#define PMI_WRITE_DATA2		7
     29
     30#define PMI_ACK			0x80
     31
     32#define PMI_TIMEOUT		100
     33
     34typedef struct {
     35	u8	type;
     36	u8	data0;
     37	u8	data1;
     38	u8	data2;
     39} pmi_message_t;
     40
     41struct pmi_handler {
     42	struct list_head node;
     43	u8 type;
     44	void (*handle_pmi_message) (pmi_message_t);
     45};
     46
     47int pmi_register_handler(struct pmi_handler *);
     48void pmi_unregister_handler(struct pmi_handler *);
     49
     50int pmi_send_message(pmi_message_t);
     51
     52#endif /* __KERNEL__ */
     53#endif /* _POWERPC_PMI_H */