1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* n2-asm.S: Niagara2 RNG hypervisor call assembler. 3 * 4 * Copyright (C) 2008 David S. Miller <davem@davemloft.net> 5 */ 6 #include <linux/linkage.h> 7 #include <asm/hypervisor.h> 8 #include "n2rng.h" 9 10 .text 11 12 ENTRY(sun4v_rng_get_diag_ctl) 13 mov HV_FAST_RNG_GET_DIAG_CTL, %o5 14 ta HV_FAST_TRAP 15 retl 16 nop 17 ENDPROC(sun4v_rng_get_diag_ctl) 18 19 ENTRY(sun4v_rng_ctl_read_v1) 20 mov %o1, %o3 21 mov %o2, %o4 22 mov HV_FAST_RNG_CTL_READ, %o5 23 ta HV_FAST_TRAP 24 stx %o1, [%o3] 25 retl 26 stx %o2, [%o4] 27 ENDPROC(sun4v_rng_ctl_read_v1) 28 29 ENTRY(sun4v_rng_ctl_read_v2) 30 save %sp, -192, %sp 31 mov %i0, %o0 32 mov %i1, %o1 33 mov HV_FAST_RNG_CTL_READ, %o5 34 ta HV_FAST_TRAP 35 stx %o1, [%i2] 36 stx %o2, [%i3] 37 stx %o3, [%i4] 38 stx %o4, [%i5] 39 ret 40 restore %g0, %o0, %o0 41 ENDPROC(sun4v_rng_ctl_read_v2) 42 43 ENTRY(sun4v_rng_ctl_write_v1) 44 mov %o3, %o4 45 mov HV_FAST_RNG_CTL_WRITE, %o5 46 ta HV_FAST_TRAP 47 retl 48 stx %o1, [%o4] 49 ENDPROC(sun4v_rng_ctl_write_v1) 50 51 ENTRY(sun4v_rng_ctl_write_v2) 52 mov HV_FAST_RNG_CTL_WRITE, %o5 53 ta HV_FAST_TRAP 54 retl 55 nop 56 ENDPROC(sun4v_rng_ctl_write_v2) 57 58 ENTRY(sun4v_rng_data_read_diag_v1) 59 mov %o2, %o4 60 mov HV_FAST_RNG_DATA_READ_DIAG, %o5 61 ta HV_FAST_TRAP 62 retl 63 stx %o1, [%o4] 64 ENDPROC(sun4v_rng_data_read_diag_v1) 65 66 ENTRY(sun4v_rng_data_read_diag_v2) 67 mov %o3, %o4 68 mov HV_FAST_RNG_DATA_READ_DIAG, %o5 69 ta HV_FAST_TRAP 70 retl 71 stx %o1, [%o4] 72 ENDPROC(sun4v_rng_data_read_diag_v2) 73 74 ENTRY(sun4v_rng_data_read) 75 mov %o1, %o4 76 mov HV_FAST_RNG_DATA_READ, %o5 77 ta HV_FAST_TRAP 78 retl 79 stx %o1, [%o4] 80 ENDPROC(sun4v_rng_data_read) 81