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 * 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
 * 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, write to the Free Software
 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * Copyright IBM Corp. 2008
 * Authors: Hollis Blanchard <hollisb@us.ibm.com>

#ifndef __POWERPC_KVM_PPC_H__
#define __POWERPC_KVM_PPC_H__

/* This file exists just so we can dereference kvm_vcpu, avoiding nested header
 * dependencies. */

#include <linux/mutex.h>
#include <linux/timer.h>
#include <linux/types.h>
#include <linux/kvm_types.h>
#include <linux/kvm_host.h>

struct kvm_tlb {
      struct tlbe guest_tlb[PPC44x_TLB_SIZE];
      struct tlbe shadow_tlb[PPC44x_TLB_SIZE];

enum emulation_result {
      EMULATE_DONE,         /* no further processing */
      EMULATE_DO_MMIO,      /* kvm_run filled with MMIO request */
      EMULATE_DO_DCR,       /* kvm_run filled with DCR request */
      EMULATE_FAIL,         /* can't emulate this instruction */

extern const unsigned char exception_priority[];
extern const unsigned char priority_exception[];

extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
extern char kvmppc_handlers_start[];
extern unsigned long kvmppc_handler_len;

extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
                              unsigned int rt, unsigned int bytes,
                              int is_bigendian);
extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
                               u32 val, unsigned int bytes, int is_bigendian);

extern int kvmppc_emulate_instruction(struct kvm_run *run,
                                      struct kvm_vcpu *vcpu);
extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);

extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gfn_t gfn,
                           u64 asid, u32 flags);
extern void kvmppc_mmu_invalidate(struct kvm_vcpu *vcpu, gva_t eaddr,
                                  gva_t eend, u32 asid);
extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);

/* XXX Book E specific */
extern void kvmppc_tlbe_set_modified(struct kvm_vcpu *vcpu, unsigned int i);

extern void kvmppc_check_and_deliver_interrupts(struct kvm_vcpu *vcpu);

static inline void kvmppc_queue_exception(struct kvm_vcpu *vcpu, int exception)
      unsigned int priority = exception_priority[exception];
      set_bit(priority, &vcpu->arch.pending_exceptions);

static inline void kvmppc_clear_exception(struct kvm_vcpu *vcpu, int exception)
      unsigned int priority = exception_priority[exception];
      clear_bit(priority, &vcpu->arch.pending_exceptions);

/* Helper function for "full" MSR writes. No need to call this if only EE is
 * changing. */
static inline void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr)
      if ((new_msr & MSR_PR) != (vcpu->arch.msr & MSR_PR))
            kvmppc_mmu_priv_switch(vcpu, new_msr & MSR_PR);

      vcpu->arch.msr = new_msr;

      if (vcpu->arch.msr & MSR_WE)

static inline void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 new_pid)
      if (vcpu->arch.pid != new_pid) {
            vcpu->arch.pid = new_pid;
            vcpu->arch.swap_pid = 1;

extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);

#endif /* __POWERPC_KVM_PPC_H__ */

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