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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s390-cpumcf-kernel.h (2153B)


      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Support for s390 CPU measurement counter set diagnostic facility
      4 *
      5 * Copyright IBM Corp. 2019
      6   Author(s): Hendrik Brueckner <brueckner@linux.ibm.com>
      7 *		Thomas Richter <tmricht@linux.ibm.com>
      8 */
      9#ifndef S390_CPUMCF_KERNEL_H
     10#define S390_CPUMCF_KERNEL_H
     11
     12#define	S390_CPUMCF_DIAG_DEF	0xfeef	/* Counter diagnostic entry ID */
     13#define	PERF_EVENT_CPUM_CF_DIAG	0xBC000	/* Event: Counter sets */
     14#define PERF_EVENT_CPUM_SF_DIAG	0xBD000 /* Event: Combined-sampling */
     15
     16struct cf_ctrset_entry {	/* CPU-M CF counter set entry (8 byte) */
     17	unsigned int def:16;	/* 0-15  Data Entry Format */
     18	unsigned int set:16;	/* 16-23 Counter set identifier */
     19	unsigned int ctr:16;	/* 24-39 Number of stored counters */
     20	unsigned int res1:16;	/* 40-63 Reserved */
     21};
     22
     23struct cf_trailer_entry {	/* CPU-M CF trailer for raw traces (64 byte) */
     24	/* 0 - 7 */
     25	union {
     26		struct {
     27			unsigned int clock_base:1;	/* TOD clock base */
     28			unsigned int speed:1;		/* CPU speed */
     29			/* Measurement alerts */
     30			unsigned int mtda:1;	/* Loss of MT ctr. data alert */
     31			unsigned int caca:1;	/* Counter auth. change alert */
     32			unsigned int lcda:1;	/* Loss of counter data alert */
     33		};
     34		unsigned long flags;		/* 0-63    All indicators */
     35	};
     36	/* 8 - 15 */
     37	unsigned int cfvn:16;			/* 64-79   Ctr First Version */
     38	unsigned int csvn:16;			/* 80-95   Ctr Second Version */
     39	unsigned int cpu_speed:32;		/* 96-127  CPU speed */
     40	/* 16 - 23 */
     41	unsigned long timestamp;		/* 128-191 Timestamp (TOD) */
     42	/* 24 - 55 */
     43	union {
     44		struct {
     45			unsigned long progusage1;
     46			unsigned long progusage2;
     47			unsigned long progusage3;
     48			unsigned long tod_base;
     49		};
     50		unsigned long progusage[4];
     51	};
     52	/* 56 - 63 */
     53	unsigned int mach_type:16;		/* Machine type */
     54	unsigned int res1:16;			/* Reserved */
     55	unsigned int res2:32;			/* Reserved */
     56};
     57
     58#define	CPUMF_CTR_SET_BASIC	0	/* Basic Counter Set */
     59#define	CPUMF_CTR_SET_USER	1	/* Problem-State Counter Set */
     60#define	CPUMF_CTR_SET_CRYPTO	2	/* Crypto-Activity Counter Set */
     61#define	CPUMF_CTR_SET_EXT	3	/* Extended Counter Set */
     62#define	CPUMF_CTR_SET_MT_DIAG	4	/* MT-diagnostic Counter Set */
     63#endif