/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __S390_ASM_SIGP_H
#define __S390_ASM_SIGP_H

/* SIGP order codes */
#define SIGP_SENSE                    1
#define SIGP_EXTERNAL_CALL            2
#define SIGP_EMERGENCY_SIGNAL         3
#define SIGP_START                    4
#define SIGP_STOP                     5
#define SIGP_RESTART                  6
#define SIGP_STOP_AND_STORE_STATUS    9
#define SIGP_INITIAL_CPU_RESET       11
#define SIGP_CPU_RESET               12
#define SIGP_SET_PREFIX              13
#define SIGP_STORE_STATUS_AT_ADDRESS 14
#define SIGP_SET_ARCHITECTURE        18
#define SIGP_COND_EMERGENCY_SIGNAL   19
#define SIGP_SENSE_RUNNING           21
#define SIGP_SET_MULTI_THREADING     22
#define SIGP_STORE_ADDITIONAL_STATUS 23

/* SIGP condition codes */
#define SIGP_CC_ORDER_CODE_ACCEPTED 0
#define SIGP_CC_STATUS_STORED       1
#define SIGP_CC_BUSY                2
#define SIGP_CC_NOT_OPERATIONAL     3

/* SIGP cpu status bits */

#define SIGP_STATUS_INVALID_ORDER       0x00000002UL
#define SIGP_STATUS_CHECK_STOP          0x00000010UL
#define SIGP_STATUS_STOPPED             0x00000040UL
#define SIGP_STATUS_EXT_CALL_PENDING    0x00000080UL
#define SIGP_STATUS_INVALID_PARAMETER   0x00000100UL
#define SIGP_STATUS_INCORRECT_STATE     0x00000200UL
#define SIGP_STATUS_NOT_RUNNING         0x00000400UL

#ifndef __ASSEMBLER__

#include <asm/asm.h>

static inline int ____pcpu_sigp(u16 addr, u8 order, unsigned long parm,
                                u32 *status)
{
        union register_pair r1 = { .odd = parm, };
        int cc;

        asm volatile(
                "       sigp    %[r1],%[addr],0(%[order])\n"
                CC_IPM(cc)
                : CC_OUT(cc, cc), [r1] "+d" (r1.pair)
                : [addr] "d" (addr), [order] "a" (order)
                : CC_CLOBBER);
        *status = r1.even;
        return CC_TRANSFORM(cc);
}

static inline int __pcpu_sigp(u16 addr, u8 order, unsigned long parm,
                              u32 *status)
{
        u32 _status;
        int cc;

        cc = ____pcpu_sigp(addr, order, parm, &_status);
        if (status && cc == SIGP_CC_STATUS_STORED)
                *status = _status;
        return cc;
}

#endif /* __ASSEMBLER__ */

#endif /* __S390_ASM_SIGP_H */