| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Copyright (C) 2019 Western Digital Corporation or its affiliates. |
| * |
| * Authors: |
| * Anup Patel <anup.patel@wdc.com> |
| */ |
| |
| #include <linux/linkage.h> |
| #include <asm/asm.h> |
| |
| .text |
| .altmacro |
| .option norelax |
| |
| /* |
| * Instruction encoding of hfence.gvma is: |
| * HFENCE.GVMA rs1, rs2 |
| * HFENCE.GVMA zero, rs2 |
| * HFENCE.GVMA rs1 |
| * HFENCE.GVMA |
| * |
| * rs1!=zero and rs2!=zero ==> HFENCE.GVMA rs1, rs2 |
| * rs1==zero and rs2!=zero ==> HFENCE.GVMA zero, rs2 |
| * rs1!=zero and rs2==zero ==> HFENCE.GVMA rs1 |
| * rs1==zero and rs2==zero ==> HFENCE.GVMA |
| * |
| * Instruction encoding of HFENCE.GVMA is: |
| * 0110001 rs2(5) rs1(5) 000 00000 1110011 |
| */ |
| |
| ENTRY(__kvm_riscv_hfence_gvma_vmid_gpa) |
| /* |
| * rs1 = a0 (GPA >> 2) |
| * rs2 = a1 (VMID) |
| * HFENCE.GVMA a0, a1 |
| * 0110001 01011 01010 000 00000 1110011 |
| */ |
| .word 0x62b50073 |
| ret |
| ENDPROC(__kvm_riscv_hfence_gvma_vmid_gpa) |
| |
| ENTRY(__kvm_riscv_hfence_gvma_vmid) |
| /* |
| * rs1 = zero |
| * rs2 = a0 (VMID) |
| * HFENCE.GVMA zero, a0 |
| * 0110001 01010 00000 000 00000 1110011 |
| */ |
| .word 0x62a00073 |
| ret |
| ENDPROC(__kvm_riscv_hfence_gvma_vmid) |
| |
| ENTRY(__kvm_riscv_hfence_gvma_gpa) |
| /* |
| * rs1 = a0 (GPA >> 2) |
| * rs2 = zero |
| * HFENCE.GVMA a0 |
| * 0110001 00000 01010 000 00000 1110011 |
| */ |
| .word 0x62050073 |
| ret |
| ENDPROC(__kvm_riscv_hfence_gvma_gpa) |
| |
| ENTRY(__kvm_riscv_hfence_gvma_all) |
| /* |
| * rs1 = zero |
| * rs2 = zero |
| * HFENCE.GVMA |
| * 0110001 00000 00000 000 00000 1110011 |
| */ |
| .word 0x62000073 |
| ret |
| ENDPROC(__kvm_riscv_hfence_gvma_all) |
