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- /*
- * Copyright (C) 2012,2013 - ARM Ltd
- * Author: Marc Zyngier <marc.zyngier@arm.com>
- *
- * Based on arch/arm/kvm/coproc_a15.c:
- * Copyright (C) 2012 - Virtual Open Systems and Columbia University
- * Authors: Rusty Russell <rusty@rustcorp.au>
- * Christoffer Dall <c.dall@virtualopensystems.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2, as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
- #include <linux/kvm_host.h>
- #include <asm/cputype.h>
- #include <asm/kvm_arm.h>
- #include <asm/kvm_asm.h>
- #include <asm/kvm_host.h>
- #include <asm/kvm_emulate.h>
- #include <asm/kvm_coproc.h>
- #include <linux/init.h>
- #include "sys_regs.h"
- static bool access_actlr(struct kvm_vcpu *vcpu,
- struct sys_reg_params *p,
- const struct sys_reg_desc *r)
- {
- if (p->is_write)
- return ignore_write(vcpu, p);
- p->regval = vcpu_sys_reg(vcpu, ACTLR_EL1);
- return true;
- }
- static void reset_actlr(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r)
- {
- u64 actlr;
- asm volatile("mrs %0, actlr_el1\n" : "=r" (actlr));
- vcpu_sys_reg(vcpu, ACTLR_EL1) = actlr;
- }
- /*
- * Implementation specific sys-reg registers.
- * Important: Must be sorted ascending by Op0, Op1, CRn, CRm, Op2
- */
- static const struct sys_reg_desc genericv8_sys_regs[] = {
- /* ACTLR_EL1 */
- { Op0(0b11), Op1(0b000), CRn(0b0001), CRm(0b0000), Op2(0b001),
- access_actlr, reset_actlr, ACTLR_EL1 },
- };
- static const struct sys_reg_desc genericv8_cp15_regs[] = {
- /* ACTLR */
- { Op1(0b000), CRn(0b0001), CRm(0b0000), Op2(0b001),
- access_actlr },
- };
- static struct kvm_sys_reg_target_table genericv8_target_table = {
- .table64 = {
- .table = genericv8_sys_regs,
- .num = ARRAY_SIZE(genericv8_sys_regs),
- },
- .table32 = {
- .table = genericv8_cp15_regs,
- .num = ARRAY_SIZE(genericv8_cp15_regs),
- },
- };
- static int __init sys_reg_genericv8_init(void)
- {
- unsigned int i;
- for (i = 1; i < ARRAY_SIZE(genericv8_sys_regs); i++)
- BUG_ON(cmp_sys_reg(&genericv8_sys_regs[i-1],
- &genericv8_sys_regs[i]) >= 0);
- kvm_register_target_sys_reg_table(KVM_ARM_TARGET_AEM_V8,
- &genericv8_target_table);
- kvm_register_target_sys_reg_table(KVM_ARM_TARGET_FOUNDATION_V8,
- &genericv8_target_table);
- kvm_register_target_sys_reg_table(KVM_ARM_TARGET_CORTEX_A53,
- &genericv8_target_table);
- kvm_register_target_sys_reg_table(KVM_ARM_TARGET_CORTEX_A57,
- &genericv8_target_table);
- kvm_register_target_sys_reg_table(KVM_ARM_TARGET_XGENE_POTENZA,
- &genericv8_target_table);
- kvm_register_target_sys_reg_table(KVM_ARM_TARGET_GENERIC_V8,
- &genericv8_target_table);
- return 0;
- }
- late_initcall(sys_reg_genericv8_init);
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