1/*
 2 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
 3 * Author: Christoffer Dall <c.dall@virtualopensystems.com>
 4 *
 5 * This program is free software; you can redistribute it and/or modify
 6 * it under the terms of the GNU General Public License, version 2, as
 7 * published by the Free Software Foundation.
 8 *
 9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
17 */
18
19#ifndef __ARM_KVM_MMIO_H__
20#define __ARM_KVM_MMIO_H__
21
22#include <linux/kvm_host.h>
23#include <asm/kvm_asm.h>
24#include <asm/kvm_arm.h>
25
26struct kvm_decode {
27	unsigned long rt;
28	bool sign_extend;
29};
30
31/*
32 * The in-kernel MMIO emulation code wants to use a copy of run->mmio,
33 * which is an anonymous type. Use our own type instead.
34 */
35struct kvm_exit_mmio {
36	phys_addr_t	phys_addr;
37	u8		data[8];
38	u32		len;
39	bool		is_write;
40};
41
42static inline void kvm_prepare_mmio(struct kvm_run *run,
43				    struct kvm_exit_mmio *mmio)
44{
45	run->mmio.phys_addr	= mmio->phys_addr;
46	run->mmio.len		= mmio->len;
47	run->mmio.is_write	= mmio->is_write;
48	memcpy(run->mmio.data, mmio->data, mmio->len);
49	run->exit_reason	= KVM_EXIT_MMIO;
50}
51
52int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run);
53int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
54		 phys_addr_t fault_ipa);
55
56#endif	/* __ARM_KVM_MMIO_H__ */

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
 4 * Author: Christoffer Dall <c.dall@virtualopensystems.com>
 
 
 
 
 
 
 
 
 
 
 
 
 
 5 */
 6
 7#ifndef __ARM_KVM_MMIO_H__
 8#define __ARM_KVM_MMIO_H__
 9
10#include <linux/kvm_host.h>
11#include <asm/kvm_asm.h>
12#include <asm/kvm_arm.h>
13
14struct kvm_decode {
15	unsigned long rt;
16	bool sign_extend;
17};
18
19void kvm_mmio_write_buf(void *buf, unsigned int len, unsigned long data);
20unsigned long kvm_mmio_read_buf(const void *buf, unsigned int len);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
21
22int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run);
23int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run,
24		 phys_addr_t fault_ipa);
25
26#endif	/* __ARM_KVM_MMIO_H__ */