/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright IBM Corp. 2006
 *
 * Author(s): Melissa Howland <melissah@us.ibm.com>
 */

#ifndef _ASM_S390_APPLDATA_H
#define _ASM_S390_APPLDATA_H

#include <linux/io.h>
#include <asm/machine.h>
#include <asm/diag.h>

#define APPLDATA_START_INTERVAL_REC     0x80
#define APPLDATA_STOP_REC               0x81
#define APPLDATA_GEN_EVENT_REC          0x82
#define APPLDATA_START_CONFIG_REC       0x83

/*
 * Parameter list for DIAGNOSE X'DC'
 */
struct appldata_parameter_list {
        u16 diag;
        u8  function;
        u8  parlist_length;
        u32 unused01;
        u16 reserved;
        u16 buffer_length;
        u32 unused02;
        u64 product_id_addr;
        u64 buffer_addr;
} __attribute__ ((packed));

struct appldata_product_id {
        char prod_nr[7];        /* product number */
        u16  prod_fn;           /* product function */
        u8   record_nr;         /* record number */
        u16  version_nr;        /* version */
        u16  release_nr;        /* release */
        u16  mod_lvl;           /* modification level */
} __attribute__ ((packed));


static inline int appldata_asm(struct appldata_parameter_list *parm_list,
                               struct appldata_product_id *id,
                               unsigned short fn, void *buffer,
                               unsigned short length)
{
        int ry;

        if (!machine_is_vm())
                return -EOPNOTSUPP;
        parm_list->diag = 0xdc;
        parm_list->function = fn;
        parm_list->parlist_length = sizeof(*parm_list);
        parm_list->buffer_length = length;
        parm_list->product_id_addr = virt_to_phys(id);
        parm_list->buffer_addr = virt_to_phys(buffer);
        diag_stat_inc(DIAG_STAT_X0DC);
        asm volatile(
                "       diag    %1,%0,0xdc"
                : "=d" (ry)
                : "d" (virt_to_phys(parm_list)), "m" (*parm_list), "m" (*id)
                : "cc");
        return ry;
}

#endif /* _ASM_S390_APPLDATA_H */