/* SPDX-License-Identifier: GPL-2.0 */
/* n2-asm.S: Niagara2 RNG hypervisor call assembler.
 *
 * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
 */
#include <linux/linkage.h>
#include <asm/hypervisor.h>
#include "n2rng.h"

        .text

ENTRY(sun4v_rng_get_diag_ctl)
        mov     HV_FAST_RNG_GET_DIAG_CTL, %o5
        ta      HV_FAST_TRAP
        retl
         nop
ENDPROC(sun4v_rng_get_diag_ctl)

ENTRY(sun4v_rng_ctl_read_v1)
        mov     %o1, %o3
        mov     %o2, %o4
        mov     HV_FAST_RNG_CTL_READ, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%o3]
        retl
         stx    %o2, [%o4]
ENDPROC(sun4v_rng_ctl_read_v1)

ENTRY(sun4v_rng_ctl_read_v2)
        save    %sp, -192, %sp
        mov     %i0, %o0
        mov     %i1, %o1
        mov     HV_FAST_RNG_CTL_READ, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%i2]
        stx     %o2, [%i3]
        stx     %o3, [%i4]
        stx     %o4, [%i5]
        ret
        restore %g0, %o0, %o0
ENDPROC(sun4v_rng_ctl_read_v2)

ENTRY(sun4v_rng_ctl_write_v1)
        mov     %o3, %o4
        mov     HV_FAST_RNG_CTL_WRITE, %o5
        ta      HV_FAST_TRAP
        retl
         stx    %o1, [%o4]
ENDPROC(sun4v_rng_ctl_write_v1)

ENTRY(sun4v_rng_ctl_write_v2)
        mov     HV_FAST_RNG_CTL_WRITE, %o5
        ta      HV_FAST_TRAP
        retl
         nop
ENDPROC(sun4v_rng_ctl_write_v2)

ENTRY(sun4v_rng_data_read_diag_v1)
        mov     %o2, %o4
        mov     HV_FAST_RNG_DATA_READ_DIAG, %o5
        ta      HV_FAST_TRAP
        retl
         stx    %o1, [%o4]
ENDPROC(sun4v_rng_data_read_diag_v1)

ENTRY(sun4v_rng_data_read_diag_v2)
        mov     %o3, %o4
        mov     HV_FAST_RNG_DATA_READ_DIAG, %o5
        ta      HV_FAST_TRAP
        retl
         stx    %o1, [%o4]
ENDPROC(sun4v_rng_data_read_diag_v2)

ENTRY(sun4v_rng_data_read)
        mov     %o1, %o4
        mov     HV_FAST_RNG_DATA_READ, %o5
        ta      HV_FAST_TRAP
        retl
         stx    %o1, [%o4]
ENDPROC(sun4v_rng_data_read)