/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Auxtrace support for s390 CPU measurement sampling facility
 *
 *  Copyright IBM Corp. 2018
 *  Author(s): Hendrik Brueckner <brueckner@linux.ibm.com>
 *             Thomas Richter <tmricht@linux.ibm.com>
 */
#ifndef S390_CPUMSF_KERNEL_H
#define S390_CPUMSF_KERNEL_H

#define S390_CPUMSF_PAGESZ      4096    /* Size of sample block units */
#define S390_CPUMSF_DIAG_DEF_FIRST      0x8001  /* Diagnostic entry lowest id */

struct hws_basic_entry {
        unsigned int def:16;        /* 0-15  Data Entry Format           */
        unsigned int R:4;           /* 16-19 reserved                    */
        unsigned int U:4;           /* 20-23 Number of unique instruct.  */
        unsigned int z:2;           /* zeros                             */
        unsigned int T:1;           /* 26 PSW DAT mode                   */
        unsigned int W:1;           /* 27 PSW wait state                 */
        unsigned int P:1;           /* 28 PSW Problem state              */
        unsigned int AS:2;          /* 29-30 PSW address-space control   */
        unsigned int I:1;           /* 31 entry valid or invalid         */
        unsigned int CL:2;          /* 32-33 Configuration Level         */
        unsigned int:14;
        unsigned int prim_asn:16;   /* primary ASN                       */
        unsigned long long ia;      /* Instruction Address               */
        unsigned long long gpp;     /* Guest Program Parameter           */
        unsigned long long hpp;     /* Host Program Parameter            */
};

struct hws_diag_entry {
        unsigned int def:16;        /* 0-15  Data Entry Format           */
        unsigned int R:15;          /* 16-19 and 20-30 reserved          */
        unsigned int I:1;           /* 31 entry valid or invalid         */
        u8           data[];        /* Machine-dependent sample data     */
};

struct hws_combined_entry {
        struct hws_basic_entry  basic;  /* Basic-sampling data entry */
        struct hws_diag_entry   diag;   /* Diagnostic-sampling data entry */
};

struct hws_trailer_entry {
        union {
                struct {
                        unsigned int f:1;       /* 0 - Block Full Indicator   */
                        unsigned int a:1;       /* 1 - Alert request control  */
                        unsigned int t:1;       /* 2 - Timestamp format       */
                        unsigned int:29;        /* 3 - 31: Reserved           */
                        unsigned int bsdes:16;  /* 32-47: size of basic SDE   */
                        unsigned int dsdes:16;  /* 48-63: size of diagnostic SDE */
                };
                unsigned long long flags;       /* 0 - 64: All indicators     */
        };
        unsigned long long overflow;     /* 64 - sample Overflow count        */
        unsigned char timestamp[16];     /* 16 - 31 timestamp                 */
        unsigned long long reserved1;    /* 32 -Reserved                      */
        unsigned long long reserved2;    /*                                   */
        union {                          /* 48 - reserved for programming use */
                struct {
                        unsigned long long clock_base:1; /* in progusage2 */
                        unsigned long long progusage1:63;
                        unsigned long long progusage2;
                };
                unsigned long long progusage[2];
        };
};

#endif