17c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier/* 27c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * Copyright (C) 2012,2013 - ARM Ltd 37c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * Author: Marc Zyngier <marc.zyngier@arm.com> 47c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * 57c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * Derived from arch/arm/kvm/coproc.h 67c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * Copyright (C) 2012 - Virtual Open Systems and Columbia University 77c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * Authors: Christoffer Dall <c.dall@virtualopensystems.com> 87c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * 97c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * This program is free software; you can redistribute it and/or modify 107c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * it under the terms of the GNU General Public License, version 2, as 117c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * published by the Free Software Foundation. 127c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * 137c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * This program is distributed in the hope that it will be useful, 147c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * but WITHOUT ANY WARRANTY; without even the implied warranty of 157c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 167c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * GNU General Public License for more details. 177c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * 187c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * You should have received a copy of the GNU General Public License 197c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier * along with this program. If not, see <http://www.gnu.org/licenses/>. 207c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier */ 217c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 227c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier#ifndef __ARM64_KVM_SYS_REGS_LOCAL_H__ 237c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier#define __ARM64_KVM_SYS_REGS_LOCAL_H__ 247c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 257c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngierstruct sys_reg_params { 267c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier u8 Op0; 277c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier u8 Op1; 287c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier u8 CRn; 297c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier u8 CRm; 307c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier u8 Op2; 317c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier u8 Rt; 327c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier bool is_write; 332072d29c46b73e39b3c6c56c6027af77086f45fdMarc Zyngier bool is_aarch32; 342072d29c46b73e39b3c6c56c6027af77086f45fdMarc Zyngier bool is_32bit; /* Only valid if is_aarch32 is true */ 357c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier}; 367c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 377c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngierstruct sys_reg_desc { 387c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier /* MRS/MSR instruction which accesses it. */ 397c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier u8 Op0; 407c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier u8 Op1; 417c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier u8 CRn; 427c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier u8 CRm; 437c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier u8 Op2; 447c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 457c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier /* Trapped access from guest, if non-NULL. */ 467c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier bool (*access)(struct kvm_vcpu *, 477c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier const struct sys_reg_params *, 487c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier const struct sys_reg_desc *); 497c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 507c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier /* Initialization for vcpu. */ 517c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier void (*reset)(struct kvm_vcpu *, const struct sys_reg_desc *); 527c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 537c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier /* Index into sys_reg[], or 0 if we don't need to save it. */ 547c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier int reg; 557c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 567c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier /* Value (usually reset value) */ 577c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier u64 val; 587c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier}; 597c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 607c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngierstatic inline void print_sys_reg_instr(const struct sys_reg_params *p) 617c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier{ 627c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier /* Look, we even formatted it for you to paste into the table! */ 637c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier kvm_pr_unimpl(" { Op0(%2u), Op1(%2u), CRn(%2u), CRm(%2u), Op2(%2u), func_%s },\n", 647c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier p->Op0, p->Op1, p->CRn, p->CRm, p->Op2, p->is_write ? "write" : "read"); 657c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier} 667c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 677c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngierstatic inline bool ignore_write(struct kvm_vcpu *vcpu, 687c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier const struct sys_reg_params *p) 697c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier{ 707c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier return true; 717c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier} 727c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 737c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngierstatic inline bool read_zero(struct kvm_vcpu *vcpu, 747c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier const struct sys_reg_params *p) 757c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier{ 767c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier *vcpu_reg(vcpu, p->Rt) = 0; 777c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier return true; 787c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier} 797c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 807c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngierstatic inline bool write_to_read_only(struct kvm_vcpu *vcpu, 817c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier const struct sys_reg_params *params) 827c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier{ 837c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier kvm_debug("sys_reg write to read-only register at: %lx\n", 847c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier *vcpu_pc(vcpu)); 857c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier print_sys_reg_instr(params); 867c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier return false; 877c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier} 887c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 897c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngierstatic inline bool read_from_write_only(struct kvm_vcpu *vcpu, 907c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier const struct sys_reg_params *params) 917c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier{ 927c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier kvm_debug("sys_reg read to write-only register at: %lx\n", 937c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier *vcpu_pc(vcpu)); 947c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier print_sys_reg_instr(params); 957c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier return false; 967c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier} 977c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 987c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier/* Reset functions */ 997c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngierstatic inline void reset_unknown(struct kvm_vcpu *vcpu, 1007c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier const struct sys_reg_desc *r) 1017c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier{ 1027c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier BUG_ON(!r->reg); 1037c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier BUG_ON(r->reg >= NR_SYS_REGS); 1047c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier vcpu_sys_reg(vcpu, r->reg) = 0x1de7ec7edbadc0deULL; 1057c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier} 1067c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 1077c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngierstatic inline void reset_val(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r) 1087c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier{ 1097c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier BUG_ON(!r->reg); 1107c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier BUG_ON(r->reg >= NR_SYS_REGS); 1117c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier vcpu_sys_reg(vcpu, r->reg) = r->val; 1127c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier} 1137c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 1147c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngierstatic inline int cmp_sys_reg(const struct sys_reg_desc *i1, 1157c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier const struct sys_reg_desc *i2) 1167c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier{ 1177c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier BUG_ON(i1 == i2); 1187c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier if (!i1) 1197c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier return 1; 1207c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier else if (!i2) 1217c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier return -1; 1227c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier if (i1->Op0 != i2->Op0) 1237c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier return i1->Op0 - i2->Op0; 1247c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier if (i1->Op1 != i2->Op1) 1257c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier return i1->Op1 - i2->Op1; 1267c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier if (i1->CRn != i2->CRn) 1277c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier return i1->CRn - i2->CRn; 1287c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier if (i1->CRm != i2->CRm) 1297c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier return i1->CRm - i2->CRm; 1307c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier return i1->Op2 - i2->Op2; 1317c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier} 1327c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 1337c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 1347c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier#define Op0(_x) .Op0 = _x 1357c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier#define Op1(_x) .Op1 = _x 1367c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier#define CRn(_x) .CRn = _x 1377c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier#define CRm(_x) .CRm = _x 1387c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier#define Op2(_x) .Op2 = _x 1397c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier 1407c8c5e6a9101ea57a1c2c9faff0917e79251a21eMarc Zyngier#endif /* __ARM64_KVM_SYS_REGS_LOCAL_H__ */ 141