projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b990a9d3 MZ |
1 | /* |
| 2 | * Copyright (C) 2012,2013 - ARM Ltd | |
| 3 | * Author: Marc Zyngier <marc.zyngier@arm.com> | |
| 4 | * | |
| 5 | * Based on arch/arm/kvm/coproc_a15.c: | |
| 6 | * Copyright (C) 2012 - Virtual Open Systems and Columbia University | |
| 7 | * Authors: Rusty Russell <rusty@rustcorp.au> | |
| 8 | * Christoffer Dall <c.dall@virtualopensystems.com> | |
| 9 | * | |
| 10 | * This program is free software; you can redistribute it and/or modify | |
| 11 | * it under the terms of the GNU General Public License, version 2, as | |
| 12 | * published by the Free Software Foundation. | |
| 13 | * | |
| 14 | * This program is distributed in the hope that it will be useful, | |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 | * GNU General Public License for more details. | |
| 18 | * | |
| 19 | * You should have received a copy of the GNU General Public License | |
| 20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 21 | */ | |
| 22 | #include <linux/kvm_host.h> | |
| 23 | #include <asm/cputype.h> | |
| 24 | #include <asm/kvm_arm.h> | |
| 25 | #include <asm/kvm_asm.h> | |
| 26 | #include <asm/kvm_host.h> | |
| 27 | #include <asm/kvm_emulate.h> | |
| 28 | #include <asm/kvm_coproc.h> | |
| 29 | #include <linux/init.h> | |
| 30 | ||
| 31 | #include "sys_regs.h" | |
| 32 | ||
| 33 | static bool access_actlr(struct kvm_vcpu *vcpu, | |
| 3fec037d | 34 | struct sys_reg_params *p, |
| b990a9d3 MZ |
35 | const struct sys_reg_desc *r) |
| 36 | { | |
| 37 | if (p->is_write) | |
| 38 | return ignore_write(vcpu, p); | |
| 39 | ||
| 2ec5be3d | 40 | p->regval = vcpu_sys_reg(vcpu, ACTLR_EL1); |
| b990a9d3 MZ |
41 | return true; |
| 42 | } | |
| 43 | ||
| 44 | static void reset_actlr(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r) | |
| 45 | { | |
| 46 | u64 actlr; | |
| 47 | ||
| 48 | asm volatile("mrs %0, actlr_el1\n" : "=r" (actlr)); | |
| 49 | vcpu_sys_reg(vcpu, ACTLR_EL1) = actlr; | |
| 50 | } | |
| 51 | ||
| 52 | /* | |
| 53 | * Implementation specific sys-reg registers. | |
| 54 | * Important: Must be sorted ascending by Op0, Op1, CRn, CRm, Op2 | |
| 55 | */ | |
| 56 | static const struct sys_reg_desc genericv8_sys_regs[] = { | |
| 57 | /* ACTLR_EL1 */ | |
| 58 | { Op0(0b11), Op1(0b000), CRn(0b0001), CRm(0b0000), Op2(0b001), | |
| 59 | access_actlr, reset_actlr, ACTLR_EL1 }, | |
| 60 | }; | |
| 61 | ||
| 06c7654d MZ |
62 | static const struct sys_reg_desc genericv8_cp15_regs[] = { |
| 63 | /* ACTLR */ | |
| 64 | { Op1(0b000), CRn(0b0001), CRm(0b0000), Op2(0b001), | |
| 65 | access_actlr }, | |
| 66 | }; | |
| 67 | ||
| b990a9d3 MZ |
68 | static struct kvm_sys_reg_target_table genericv8_target_table = { |
| 69 | .table64 = { | |
| 70 | .table = genericv8_sys_regs, | |
| 71 | .num = ARRAY_SIZE(genericv8_sys_regs), | |
| 72 | }, | |
| 06c7654d MZ |
73 | .table32 = { |
| 74 | .table = genericv8_cp15_regs, | |
| 75 | .num = ARRAY_SIZE(genericv8_cp15_regs), | |
| 76 | }, | |
| b990a9d3 MZ |
77 | }; |
| 78 | ||
| 79 | static int __init sys_reg_genericv8_init(void) | |
| 80 | { | |
| 81 | unsigned int i; | |
| 82 | ||
| 83 | for (i = 1; i < ARRAY_SIZE(genericv8_sys_regs); i++) | |
| 84 | BUG_ON(cmp_sys_reg(&genericv8_sys_regs[i-1], | |
| 85 | &genericv8_sys_regs[i]) >= 0); | |
| 86 | ||
| 87 | kvm_register_target_sys_reg_table(KVM_ARM_TARGET_AEM_V8, | |
| 88 | &genericv8_target_table); | |
| 89 | kvm_register_target_sys_reg_table(KVM_ARM_TARGET_FOUNDATION_V8, | |
| 90 | &genericv8_target_table); | |
| 1252b331 MZ |
91 | kvm_register_target_sys_reg_table(KVM_ARM_TARGET_CORTEX_A53, |
| 92 | &genericv8_target_table); | |
| b990a9d3 MZ |
93 | kvm_register_target_sys_reg_table(KVM_ARM_TARGET_CORTEX_A57, |
| 94 | &genericv8_target_table); | |
| e28100bd AP |
95 | kvm_register_target_sys_reg_table(KVM_ARM_TARGET_XGENE_POTENZA, |
| 96 | &genericv8_target_table); | |
| bca556ac SP |
97 | kvm_register_target_sys_reg_table(KVM_ARM_TARGET_GENERIC_V8, |
| 98 | &genericv8_target_table); | |
| e28100bd | 99 | |
| b990a9d3 MZ |
100 | return 0; |
| 101 | } | |
| 102 | late_initcall(sys_reg_genericv8_init); |