/* SPDX-License-Identifier: GPL-2.0 */
/*
 * definition for store system information stsi
 *
 * Copyright IBM Corp. 2001, 2008
 *
 *    Author(s): Ulrich Weigand <weigand@de.ibm.com>
 *               Christian Borntraeger <borntraeger@de.ibm.com>
 */

#ifndef __ASM_S390_SYSINFO_H
#define __ASM_S390_SYSINFO_H

#include <linux/uuid.h>
#include <asm/bitsperlong.h>
#include <asm/asm.h>

/*
 * stsi - store system information
 *
 * Returns the current configuration level if function code 0 was specified.
 * Otherwise returns 0 on success or a negative value on error.
 */
static inline int stsi(void *sysinfo, int fc, int sel1, int sel2)
{
        int r0 = (fc << 28) | sel1;
        int cc;

        asm volatile(
                "       lr      %%r0,%[r0]\n"
                "       lr      %%r1,%[r1]\n"
                "       stsi    %[sysinfo]\n"
                "       lr      %[r0],%%r0\n"
                CC_IPM(cc)
                : CC_OUT(cc, cc), [r0] "+d" (r0), [sysinfo] "=Q" (*(char *)sysinfo)
                : [r1] "d" (sel2)
                : CC_CLOBBER_LIST("0", "1", "memory"));
        if (cc == 3)
                return -EOPNOTSUPP;
        return fc ? 0 : (unsigned int)r0 >> 28;
}

struct sysinfo_1_1_1 {
        unsigned char p:1;
        unsigned char :6;
        unsigned char t:1;
        unsigned char :8;
        unsigned char ccr;
        unsigned char cai;
        char reserved_0[20];
        unsigned long lic;
        char manufacturer[16];
        char type[4];
        char reserved_1[12];
        char model_capacity[16];
        char sequence[16];
        char plant[4];
        char model[16];
        char model_perm_cap[16];
        char model_temp_cap[16];
        unsigned int model_cap_rating;
        unsigned int model_perm_cap_rating;
        unsigned int model_temp_cap_rating;
        unsigned char typepct[5];
        unsigned char reserved_2[3];
        unsigned int ncr;
        unsigned int npr;
        unsigned int ntr;
        char reserved_3[4];
        char model_var_cap[16];
        unsigned int model_var_cap_rating;
        unsigned int nvr;
};

struct sysinfo_1_2_1 {
        char reserved_0[80];
        char sequence[16];
        char plant[4];
        char reserved_1[2];
        unsigned short cpu_address;
};

struct sysinfo_1_2_2 {
        char format;
        char reserved_0[1];
        unsigned short acc_offset;
        unsigned char mt_installed :1;
        unsigned char :2;
        unsigned char mt_stid :5;
        unsigned char :3;
        unsigned char mt_gtid :5;
        char reserved_1[18];
        unsigned int nominal_cap;
        unsigned int secondary_cap;
        unsigned int capability;
        unsigned short cpus_total;
        unsigned short cpus_configured;
        unsigned short cpus_standby;
        unsigned short cpus_reserved;
        unsigned short adjustment[];
};

struct sysinfo_1_2_2_extension {
        unsigned int alt_capability;
        unsigned short alt_adjustment[];
};

struct sysinfo_2_2_1 {
        char reserved_0[80];
        char sequence[16];
        char plant[4];
        unsigned short cpu_id;
        unsigned short cpu_address;
};

struct sysinfo_2_2_2 {
        char reserved_0[32];
        unsigned short lpar_number;
        char reserved_1;
        unsigned char characteristics;
        unsigned short cpus_total;
        unsigned short cpus_configured;
        unsigned short cpus_standby;
        unsigned short cpus_reserved;
        char name[8];
        unsigned int caf;
        char reserved_2[8];
        unsigned char mt_installed :1;
        unsigned char :2;
        unsigned char mt_stid :5;
        unsigned char :3;
        unsigned char mt_gtid :5;
        unsigned char :3;
        unsigned char mt_psmtid :5;
        char reserved_3[5];
        unsigned short cpus_dedicated;
        unsigned short cpus_shared;
        char reserved_4[3];
        unsigned char vsne;
        uuid_t uuid;
        char reserved_5[160];
        char ext_name[256];
};

#define LPAR_CHAR_DEDICATED     (1 << 7)
#define LPAR_CHAR_SHARED        (1 << 6)
#define LPAR_CHAR_LIMITED       (1 << 5)

struct sysinfo_3_2_2 {
        char reserved_0[31];
        unsigned char :4;
        unsigned char count:4;
        struct {
                char reserved_0[4];
                unsigned short cpus_total;
                unsigned short cpus_configured;
                unsigned short cpus_standby;
                unsigned short cpus_reserved;
                char name[8];
                unsigned int caf;
                char cpi[16];
                char reserved_1[3];
                unsigned char evmne;
                unsigned int reserved_2;
                uuid_t uuid;
        } vm[8];
        char reserved_3[1504];
        char ext_names[8][256];
};

extern int topology_max_mnest;

/*
 * Returns the maximum nesting level supported by the cpu topology code.
 * The current maximum level is 4 which is the drawer level.
 */
static inline unsigned char topology_mnest_limit(void)
{
        return min(topology_max_mnest, 4);
}

#define TOPOLOGY_NR_MAG         6

struct topology_core {
        unsigned char nl;
        unsigned char reserved0[3];
        unsigned char :5;
        unsigned char d:1;
        unsigned char pp:2;
        unsigned char reserved1;
        unsigned short origin;
        unsigned long mask;
};

struct topology_container {
        unsigned char nl;
        unsigned char reserved[6];
        unsigned char id;
};

union topology_entry {
        unsigned char nl;
        struct topology_core cpu;
        struct topology_container container;
};

struct sysinfo_15_1_x {
        unsigned char reserved0[2];
        unsigned short length;
        unsigned char mag[TOPOLOGY_NR_MAG];
        unsigned char reserved1;
        unsigned char mnest;
        unsigned char reserved2[4];
        union topology_entry tle[];
};

int stsi(void *sysinfo, int fc, int sel1, int sel2);

/*
 * Service level reporting interface.
 */
struct service_level {
        struct list_head list;
        void (*seq_print)(struct seq_file *, struct service_level *);
};

int register_service_level(struct service_level *);
int unregister_service_level(struct service_level *);

int sthyi_fill(void *dst, u64 *rc);
#endif /* __ASM_S390_SYSINFO_H */