arm64: KVM: system register handling

/*

 * Copyright (C) 2012,2013 - ARM Ltd

 * Author: Marc Zyngier <marc.zyngier@arm.com>

 *

 * Derived from arch/arm/include/asm/kvm_coproc.h

 * Copyright (C) 2012 Rusty Russell IBM Corporation

 *

 * 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/>.

 */

#ifndef __ARM64_KVM_COPROC_H__

#define __ARM64_KVM_COPROC_H__

#include <linux/kvm_host.h>

void kvm_reset_sys_regs(struct kvm_vcpu *vcpu);

struct kvm_sys_reg_table {

	const struct sys_reg_desc *table;

	size_t num;

};

struct kvm_sys_reg_target_table {

	struct kvm_sys_reg_table table64;

};

void kvm_register_target_sys_reg_table(unsigned int target,

				       struct kvm_sys_reg_target_table *table);

int kvm_handle_sys_reg(struct kvm_vcpu *vcpu, struct kvm_run *run);

#define kvm_coproc_table_init kvm_sys_reg_table_init

void kvm_sys_reg_table_init(void);

struct kvm_one_reg;

int kvm_arm_copy_sys_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);

int kvm_arm_sys_reg_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *);

int kvm_arm_sys_reg_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *);

unsigned long kvm_arm_num_sys_reg_descs(struct kvm_vcpu *vcpu);

#endif /* __ARM64_KVM_COPROC_H__ */

struct kvm_arch_memory_slot {

struct kvm_arch_memory_slot {

};

};

/* If you need to interpret the index values, here is the key: */

#define KVM_REG_ARM_COPROC_MASK		0x000000000FFF0000

#define KVM_REG_ARM_COPROC_SHIFT	16

/* Normal registers are mapped as coprocessor 16. */

#define KVM_REG_ARM_CORE		(0x0010 << KVM_REG_ARM_COPROC_SHIFT)

#define KVM_REG_ARM_CORE_REG(name)	(offsetof(struct kvm_regs, name) / sizeof(__u32))

/* Some registers need more space to represent values. */

#define KVM_REG_ARM_DEMUX		(0x0011 << KVM_REG_ARM_COPROC_SHIFT)

#define KVM_REG_ARM_DEMUX_ID_MASK	0x000000000000FF00

#define KVM_REG_ARM_DEMUX_ID_SHIFT	8

#define KVM_REG_ARM_DEMUX_ID_CCSIDR	(0x00 << KVM_REG_ARM_DEMUX_ID_SHIFT)

#define KVM_REG_ARM_DEMUX_VAL_MASK	0x00000000000000FF

#define KVM_REG_ARM_DEMUX_VAL_SHIFT	0

/* AArch64 system registers */

#define KVM_REG_ARM64_SYSREG		(0x0013 << KVM_REG_ARM_COPROC_SHIFT)

#define KVM_REG_ARM64_SYSREG_OP0_MASK	0x000000000000c000

#define KVM_REG_ARM64_SYSREG_OP0_SHIFT	14

#define KVM_REG_ARM64_SYSREG_OP1_MASK	0x0000000000003800

#define KVM_REG_ARM64_SYSREG_OP1_SHIFT	11

#define KVM_REG_ARM64_SYSREG_CRN_MASK	0x0000000000000780

#define KVM_REG_ARM64_SYSREG_CRN_SHIFT	7

#define KVM_REG_ARM64_SYSREG_CRM_MASK	0x0000000000000078

#define KVM_REG_ARM64_SYSREG_CRM_SHIFT	3

#define KVM_REG_ARM64_SYSREG_OP2_MASK	0x0000000000000007

#define KVM_REG_ARM64_SYSREG_OP2_SHIFT	0

/* KVM_IRQ_LINE irq field index values */

/* KVM_IRQ_LINE irq field index values */

#define KVM_ARM_IRQ_TYPE_SHIFT		24

#define KVM_ARM_IRQ_TYPE_SHIFT		24

#define KVM_ARM_IRQ_TYPE_MASK		0xff

#define KVM_ARM_IRQ_TYPE_MASK		0xff