LXR linux/arch/arm/include/asm/kvm

   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__ */
  57