/* SPDX-License-Identifier: GPL-2.0 */
/*
 * s390 diagnose functions
 *
 * Copyright IBM Corp. 2007
 * Author(s): Michael Holzheu <holzheu@de.ibm.com>
 */

#ifndef _ASM_S390_DIAG_H
#define _ASM_S390_DIAG_H

#include <linux/if_ether.h>
#include <linux/percpu.h>
#include <asm/asm-extable.h>
#include <asm/sclp.h>
#include <asm/cio.h>

enum diag_stat_enum {
        DIAG_STAT_X008,
        DIAG_STAT_X00C,
        DIAG_STAT_X010,
        DIAG_STAT_X014,
        DIAG_STAT_X044,
        DIAG_STAT_X064,
        DIAG_STAT_X08C,
        DIAG_STAT_X09C,
        DIAG_STAT_X0DC,
        DIAG_STAT_X204,
        DIAG_STAT_X210,
        DIAG_STAT_X224,
        DIAG_STAT_X250,
        DIAG_STAT_X258,
        DIAG_STAT_X26C,
        DIAG_STAT_X288,
        DIAG_STAT_X2C4,
        DIAG_STAT_X2FC,
        DIAG_STAT_X304,
        DIAG_STAT_X308,
        DIAG_STAT_X310,
        DIAG_STAT_X318,
        DIAG_STAT_X320,
        DIAG_STAT_X324,
        DIAG_STAT_X49C,
        DIAG_STAT_X500,
        NR_DIAG_STAT
};

void diag_stat_inc(enum diag_stat_enum nr);
void diag_stat_inc_norecursion(enum diag_stat_enum nr);

struct hypfs_diag0c_entry;

/*
 * Diagnose 0c: Pseudo Timer
 */
void diag0c(struct hypfs_diag0c_entry *data);

/*
 * Diagnose 10: Release page range
 */
static inline void diag10_range(unsigned long start_pfn, unsigned long num_pfn)
{
        unsigned long start_addr, end_addr;

        start_addr = pfn_to_phys(start_pfn);
        end_addr = pfn_to_phys(start_pfn + num_pfn - 1);

        diag_stat_inc(DIAG_STAT_X010);
        asm_inline volatile(
                "0:     diag    %0,%1,0x10\n"
                "1:     nopr    %%r7\n"
                EX_TABLE(0b, 1b)
                EX_TABLE(1b, 1b)
                : : "a" (start_addr), "a" (end_addr));
}

/*
 * Diagnose 14: Input spool file manipulation
 */
extern int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode);

/*
 * Diagnose 210: Get information about a virtual device
 */
struct diag210 {
        u16 vrdcdvno;   /* device number (input) */
        u16 vrdclen;    /* data block length (input) */
        u8 vrdcvcla;    /* virtual device class (output) */
        u8 vrdcvtyp;    /* virtual device type (output) */
        u8 vrdcvsta;    /* virtual device status (output) */
        u8 vrdcvfla;    /* virtual device flags (output) */
        u8 vrdcrccl;    /* real device class (output) */
        u8 vrdccrty;    /* real device type (output) */
        u8 vrdccrmd;    /* real device model (output) */
        u8 vrdccrft;    /* real device feature (output) */
} __packed __aligned(4);

extern int diag210(struct diag210 *addr);

struct diag8c {
        u8 flags;
        u8 num_partitions;
        u16 width;
        u16 height;
        u8 data[];
} __packed __aligned(4);

extern int diag8c(struct diag8c *out, struct ccw_dev_id *devno);

/* bit is set in flags, when physical cpu info is included in diag 204 data */
#define DIAG204_LPAR_PHYS_FLG 0x80
#define DIAG204_LPAR_NAME_LEN 8         /* lpar name len in diag 204 data */
#define DIAG204_CPU_NAME_LEN 16         /* type name len of cpus in diag224 name table */

/* diag 204 subcodes */
enum diag204_sc {
        DIAG204_SUBC_STIB4 = 4,
        DIAG204_SUBC_RSI = 5,
        DIAG204_SUBC_STIB6 = 6,
        DIAG204_SUBC_STIB7 = 7
};

#define DIAG204_SUBCODE_MASK 0xffff
#define DIAG204_BIF_BIT 0x80000000
#define DIAG204_BUSY_WAIT (HZ / 10)

/* The two available diag 204 data formats */
enum diag204_format {
        DIAG204_INFO_SIMPLE = 0,
        DIAG204_INFO_EXT = 0x00010000
};

enum diag204_cpu_flags {
        DIAG204_CPU_ONLINE = 0x20,
        DIAG204_CPU_CAPPED = 0x40,
};

struct diag204_info_blk_hdr {
        __u8  npar;
        __u8  flags;
        __u16 tslice;
        __u16 phys_cpus;
        __u16 this_part;
        __u64 curtod;
} __packed;

struct diag204_x_info_blk_hdr {
        __u8  npar;
        __u8  flags;
        __u16 tslice;
        __u16 phys_cpus;
        __u16 this_part;
        __u64 curtod1;
        __u64 curtod2;
        char reserved[40];
} __packed;

struct diag204_part_hdr {
        __u8 pn;
        __u8 cpus;
        char reserved[6];
        char part_name[DIAG204_LPAR_NAME_LEN];
} __packed;

struct diag204_x_part_hdr {
        __u8  pn;
        __u8  cpus;
        __u8  rcpus;
        __u8  pflag;
        __u32 mlu;
        char  part_name[DIAG204_LPAR_NAME_LEN];
        char  lpc_name[8];
        char  os_name[8];
        __u64 online_cs;
        __u64 online_es;
        __u8  upid;
        __u8  reserved:3;
        __u8  mtid:5;
        char  reserved1[2];
        __u32 group_mlu;
        char  group_name[8];
        char  hardware_group_name[8];
        char  reserved2[24];
} __packed;

struct diag204_cpu_info {
        __u16 cpu_addr;
        char  reserved1[2];
        __u8  ctidx;
        __u8  cflag;
        __u16 weight;
        __u64 acc_time;
        __u64 lp_time;
} __packed;

struct diag204_x_cpu_info {
        __u16 cpu_addr;
        char  reserved1[2];
        __u8  ctidx;
        __u8  cflag;
        __u16 weight;
        __u64 acc_time;
        __u64 lp_time;
        __u16 min_weight;
        __u16 cur_weight;
        __u16 max_weight;
        char  reseved2[2];
        __u64 online_time;
        __u64 wait_time;
        __u32 pma_weight;
        __u32 polar_weight;
        __u32 cpu_type_cap;
        __u32 group_cpu_type_cap;
        char  reserved3[32];
} __packed;

struct diag204_phys_hdr {
        char reserved1[1];
        __u8 cpus;
        char reserved2[6];
        char mgm_name[8];
} __packed;

struct diag204_x_phys_hdr {
        char reserved1[1];
        __u8 cpus;
        char reserved2[6];
        char mgm_name[8];
        char reserved3[80];
} __packed;

struct diag204_phys_cpu {
        __u16 cpu_addr;
        char  reserved1[2];
        __u8  ctidx;
        char  reserved2[3];
        __u64 mgm_time;
        char  reserved3[8];
} __packed;

struct diag204_x_phys_cpu {
        __u16 cpu_addr;
        char  reserved1[2];
        __u8  ctidx;
        char  reserved2[1];
        __u16 weight;
        __u64 mgm_time;
        char  reserved3[80];
} __packed;

struct diag204_x_part_block {
        struct diag204_x_part_hdr hdr;
        struct diag204_x_cpu_info cpus[];
} __packed;

struct diag204_x_phys_block {
        struct diag204_x_phys_hdr hdr;
        struct diag204_x_phys_cpu cpus[];
} __packed;

enum diag26c_sc {
        DIAG26C_PORT_VNIC    = 0x00000024,
        DIAG26C_MAC_SERVICES = 0x00000030
};

enum diag26c_version {
        DIAG26C_VERSION2         = 0x00000002,  /* z/VM 5.4.0 */
        DIAG26C_VERSION6_VM65918 = 0x00020006   /* z/VM 6.4.0 + VM65918 */
};

#define DIAG26C_VNIC_INFO       0x0002
struct diag26c_vnic_req {
        u32     resp_buf_len;
        u32     resp_version;
        u16     req_format;
        u16     vlan_id;
        u64     sys_name;
        u8      res[2];
        u16     devno;
} __packed __aligned(8);

#define VNIC_INFO_PROT_L3       1
#define VNIC_INFO_PROT_L2       2
/* Note: this is the bare minimum, use it for uninitialized VNICs only. */
struct diag26c_vnic_resp {
        u32     version;
        u32     entry_cnt;
        /* VNIC info: */
        u32     next_entry;
        u64     owner;
        u16     devno;
        u8      status;
        u8      type;
        u64     lan_owner;
        u64     lan_name;
        u64     port_name;
        u8      port_type;
        u8      ext_status:6;
        u8      protocol:2;
        u16     base_devno;
        u32     port_num;
        u32     ifindex;
        u32     maxinfo;
        u32     dev_count;
        /* 3x device info: */
        u8      dev_info1[28];
        u8      dev_info2[28];
        u8      dev_info3[28];
} __packed __aligned(8);

#define DIAG26C_GET_MAC 0x0000
struct diag26c_mac_req {
        u32     resp_buf_len;
        u32     resp_version;
        u16     op_code;
        u16     devno;
        u8      res[4];
};

struct diag26c_mac_resp {
        u32     version;
        u8      mac[ETH_ALEN];
        u8      res[2];
} __aligned(8);

#define CPNC_LINUX              0x4
union diag318_info {
        unsigned long val;
        struct {
                unsigned long cpnc : 8;
                unsigned long cpvc : 56;
        };
};

static inline bool diag204_has_bif(void)
{
        return sclp.has_diag204_bif;
}

int diag204(unsigned long subcode, unsigned long size, void *addr);
int diag224(void *ptr);
int diag26c(void *req, void *resp, enum diag26c_sc subcode);

struct hypfs_diag0c_entry;

/*
 * This structure must contain only pointers/references into
 * the AMODE31 text section.
 */
struct diag_ops {
        int (*diag210)(struct diag210 *addr);
        int (*diag26c)(unsigned long rx, unsigned long rx1, enum diag26c_sc subcode);
        int (*diag14)(unsigned long rx, unsigned long ry1, unsigned long subcode);
        int (*diag8c)(struct diag8c *addr, struct ccw_dev_id *devno, size_t len);
        void (*diag0c)(unsigned long rx);
        void (*diag308_reset)(void);
};

extern struct diag_ops diag_amode31_ops;
extern struct diag210 *__diag210_tmp_amode31;

int _diag210_amode31(struct diag210 *addr);
int _diag26c_amode31(unsigned long rx, unsigned long rx1, enum diag26c_sc subcode);
int _diag14_amode31(unsigned long rx, unsigned long ry1, unsigned long subcode);
void _diag0c_amode31(unsigned long rx);
void _diag308_reset_amode31(void);
int _diag8c_amode31(struct diag8c *addr, struct ccw_dev_id *devno, size_t len);

/* diag 49c subcodes */
enum diag49c_sc {
        DIAG49C_SUBC_ACK = 0,
        DIAG49C_SUBC_REG = 1
};

int diag49c(unsigned long subcode);

#endif /* _ASM_S390_DIAG_H */