/*
* Copyright (C) 2012 - Virtual Open Systems and Columbia University
* Author: Christoffer Dall <[email protected]>
*
* 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_MMIO_H__
#define __ARM64_KVM_MMIO_H__

#include <linux/kvm_host.h>
#include <asm/kvm_asm.h>
#include <asm/kvm_arm.h>

/*
* This is annoying. The mmio code requires this, even if we don't
* need any decoding. To be fixed.
*/
struct kvm_decode {
unsigned long rt;
bool sign_extend;
};

/*
* The in-kernel MMIO emulation code wants to use a copy of run->mmio,
* which is an anonymous type. Use our own type instead.
*/
struct kvm_exit_mmio {
phys_addr_t phys_addr;
u8 data[8];
u32 len;
bool is_write;
};

static inline void kvm_prepare_mmio(struct kvm_run *run,
struct kvm_exit_mmio *mmio)
{
run->mmio.phys_addr = mmio->phys_addr;
run->mmio.len = mmio->len;
run->mmio.is_write = mmio->is_write;
memcpy(run->mmio.data, mmio->data, mmio->len);
run->exit_reason = KVM_EXIT_MMIO;
}

int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run);
int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
phys_addr_t fault_ipa);

#endif /* __ARM64_KVM_MMIO_H__ */