342 lines
8.7 KiB
C
342 lines
8.7 KiB
C
/*
|
|
* Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
|
|
*
|
|
* Author: Yu Liu <yu.liu@freescale.com>
|
|
* Scott Wood <scottwood@freescale.com>
|
|
* Ashish Kalra <ashish.kalra@freescale.com>
|
|
* Varun Sethi <varun.sethi@freescale.com>
|
|
*
|
|
* Description:
|
|
* This file is based on arch/powerpc/kvm/44x_tlb.h and
|
|
* arch/powerpc/include/asm/kvm_44x.h by Hollis Blanchard <hollisb@us.ibm.com>,
|
|
* Copyright IBM Corp. 2007-2008
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef KVM_E500_H
|
|
#define KVM_E500_H
|
|
|
|
#include <linux/kvm_host.h>
|
|
#include <asm/mmu-book3e.h>
|
|
#include <asm/tlb.h>
|
|
#include <asm/cputhreads.h>
|
|
|
|
enum vcpu_ftr {
|
|
VCPU_FTR_MMU_V2
|
|
};
|
|
|
|
#define E500_PID_NUM 3
|
|
#define E500_TLB_NUM 2
|
|
|
|
/* entry is mapped somewhere in host TLB */
|
|
#define E500_TLB_VALID (1 << 31)
|
|
/* TLB1 entry is mapped by host TLB1, tracked by bitmaps */
|
|
#define E500_TLB_BITMAP (1 << 30)
|
|
/* TLB1 entry is mapped by host TLB0 */
|
|
#define E500_TLB_TLB0 (1 << 29)
|
|
/* bits [6-5] MAS2_X1 and MAS2_X0 and [4-0] bits for WIMGE */
|
|
#define E500_TLB_MAS2_ATTR (0x7f)
|
|
|
|
struct tlbe_ref {
|
|
pfn_t pfn; /* valid only for TLB0, except briefly */
|
|
unsigned int flags; /* E500_TLB_* */
|
|
};
|
|
|
|
struct tlbe_priv {
|
|
struct tlbe_ref ref;
|
|
};
|
|
|
|
#ifdef CONFIG_KVM_E500V2
|
|
struct vcpu_id_table;
|
|
#endif
|
|
|
|
struct kvmppc_e500_tlb_params {
|
|
int entries, ways, sets;
|
|
};
|
|
|
|
struct kvmppc_vcpu_e500 {
|
|
struct kvm_vcpu vcpu;
|
|
|
|
/* Unmodified copy of the guest's TLB -- shared with host userspace. */
|
|
struct kvm_book3e_206_tlb_entry *gtlb_arch;
|
|
|
|
/* Starting entry number in gtlb_arch[] */
|
|
int gtlb_offset[E500_TLB_NUM];
|
|
|
|
/* KVM internal information associated with each guest TLB entry */
|
|
struct tlbe_priv *gtlb_priv[E500_TLB_NUM];
|
|
|
|
struct kvmppc_e500_tlb_params gtlb_params[E500_TLB_NUM];
|
|
|
|
unsigned int gtlb_nv[E500_TLB_NUM];
|
|
|
|
unsigned int host_tlb1_nv;
|
|
|
|
u32 svr;
|
|
u32 l1csr0;
|
|
u32 l1csr1;
|
|
u32 hid0;
|
|
u32 hid1;
|
|
u64 mcar;
|
|
|
|
struct page **shared_tlb_pages;
|
|
int num_shared_tlb_pages;
|
|
|
|
u64 *g2h_tlb1_map;
|
|
unsigned int *h2g_tlb1_rmap;
|
|
|
|
/* Minimum and maximum address mapped my TLB1 */
|
|
unsigned long tlb1_min_eaddr;
|
|
unsigned long tlb1_max_eaddr;
|
|
|
|
#ifdef CONFIG_KVM_E500V2
|
|
u32 pid[E500_PID_NUM];
|
|
|
|
/* vcpu id table */
|
|
struct vcpu_id_table *idt;
|
|
#endif
|
|
};
|
|
|
|
static inline struct kvmppc_vcpu_e500 *to_e500(struct kvm_vcpu *vcpu)
|
|
{
|
|
return container_of(vcpu, struct kvmppc_vcpu_e500, vcpu);
|
|
}
|
|
|
|
|
|
/* This geometry is the legacy default -- can be overridden by userspace */
|
|
#define KVM_E500_TLB0_WAY_SIZE 128
|
|
#define KVM_E500_TLB0_WAY_NUM 2
|
|
|
|
#define KVM_E500_TLB0_SIZE (KVM_E500_TLB0_WAY_SIZE * KVM_E500_TLB0_WAY_NUM)
|
|
#define KVM_E500_TLB1_SIZE 16
|
|
|
|
#define index_of(tlbsel, esel) (((tlbsel) << 16) | ((esel) & 0xFFFF))
|
|
#define tlbsel_of(index) ((index) >> 16)
|
|
#define esel_of(index) ((index) & 0xFFFF)
|
|
|
|
#define E500_TLB_USER_PERM_MASK (MAS3_UX|MAS3_UR|MAS3_UW)
|
|
#define E500_TLB_SUPER_PERM_MASK (MAS3_SX|MAS3_SR|MAS3_SW)
|
|
#define MAS2_ATTRIB_MASK \
|
|
(MAS2_X0 | MAS2_X1 | MAS2_E | MAS2_G)
|
|
#define MAS3_ATTRIB_MASK \
|
|
(MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3 \
|
|
| E500_TLB_USER_PERM_MASK | E500_TLB_SUPER_PERM_MASK)
|
|
|
|
int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500,
|
|
ulong value);
|
|
int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu);
|
|
int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu);
|
|
int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, gva_t ea);
|
|
int kvmppc_e500_emul_tlbilx(struct kvm_vcpu *vcpu, int type, gva_t ea);
|
|
int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, gva_t ea);
|
|
int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500);
|
|
void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500);
|
|
|
|
void kvmppc_get_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
|
|
int kvmppc_set_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
|
|
|
|
int kvmppc_get_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id,
|
|
union kvmppc_one_reg *val);
|
|
int kvmppc_set_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id,
|
|
union kvmppc_one_reg *val);
|
|
|
|
#ifdef CONFIG_KVM_E500V2
|
|
unsigned int kvmppc_e500_get_sid(struct kvmppc_vcpu_e500 *vcpu_e500,
|
|
unsigned int as, unsigned int gid,
|
|
unsigned int pr, int avoid_recursion);
|
|
#endif
|
|
|
|
/* TLB helper functions */
|
|
static inline unsigned int
|
|
get_tlb_size(const struct kvm_book3e_206_tlb_entry *tlbe)
|
|
{
|
|
return (tlbe->mas1 >> 7) & 0x1f;
|
|
}
|
|
|
|
static inline gva_t get_tlb_eaddr(const struct kvm_book3e_206_tlb_entry *tlbe)
|
|
{
|
|
return tlbe->mas2 & MAS2_EPN;
|
|
}
|
|
|
|
static inline u64 get_tlb_bytes(const struct kvm_book3e_206_tlb_entry *tlbe)
|
|
{
|
|
unsigned int pgsize = get_tlb_size(tlbe);
|
|
return 1ULL << 10 << pgsize;
|
|
}
|
|
|
|
static inline gva_t get_tlb_end(const struct kvm_book3e_206_tlb_entry *tlbe)
|
|
{
|
|
u64 bytes = get_tlb_bytes(tlbe);
|
|
return get_tlb_eaddr(tlbe) + bytes - 1;
|
|
}
|
|
|
|
static inline u64 get_tlb_raddr(const struct kvm_book3e_206_tlb_entry *tlbe)
|
|
{
|
|
return tlbe->mas7_3 & ~0xfffULL;
|
|
}
|
|
|
|
static inline unsigned int
|
|
get_tlb_tid(const struct kvm_book3e_206_tlb_entry *tlbe)
|
|
{
|
|
return (tlbe->mas1 >> 16) & 0xff;
|
|
}
|
|
|
|
static inline unsigned int
|
|
get_tlb_ts(const struct kvm_book3e_206_tlb_entry *tlbe)
|
|
{
|
|
return (tlbe->mas1 >> 12) & 0x1;
|
|
}
|
|
|
|
static inline unsigned int
|
|
get_tlb_v(const struct kvm_book3e_206_tlb_entry *tlbe)
|
|
{
|
|
return (tlbe->mas1 >> 31) & 0x1;
|
|
}
|
|
|
|
static inline unsigned int
|
|
get_tlb_iprot(const struct kvm_book3e_206_tlb_entry *tlbe)
|
|
{
|
|
return (tlbe->mas1 >> 30) & 0x1;
|
|
}
|
|
|
|
static inline unsigned int
|
|
get_tlb_tsize(const struct kvm_book3e_206_tlb_entry *tlbe)
|
|
{
|
|
return (tlbe->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
|
|
}
|
|
|
|
static inline unsigned int get_cur_pid(struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->arch.pid & 0xff;
|
|
}
|
|
|
|
static inline unsigned int get_cur_as(struct kvm_vcpu *vcpu)
|
|
{
|
|
return !!(vcpu->arch.shared->msr & (MSR_IS | MSR_DS));
|
|
}
|
|
|
|
static inline unsigned int get_cur_pr(struct kvm_vcpu *vcpu)
|
|
{
|
|
return !!(vcpu->arch.shared->msr & MSR_PR);
|
|
}
|
|
|
|
static inline unsigned int get_cur_spid(const struct kvm_vcpu *vcpu)
|
|
{
|
|
return (vcpu->arch.shared->mas6 >> 16) & 0xff;
|
|
}
|
|
|
|
static inline unsigned int get_cur_sas(const struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->arch.shared->mas6 & 0x1;
|
|
}
|
|
|
|
static inline unsigned int get_tlb_tlbsel(const struct kvm_vcpu *vcpu)
|
|
{
|
|
/*
|
|
* Manual says that tlbsel has 2 bits wide.
|
|
* Since we only have two TLBs, only lower bit is used.
|
|
*/
|
|
return (vcpu->arch.shared->mas0 >> 28) & 0x1;
|
|
}
|
|
|
|
static inline unsigned int get_tlb_nv_bit(const struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->arch.shared->mas0 & 0xfff;
|
|
}
|
|
|
|
static inline unsigned int get_tlb_esel_bit(const struct kvm_vcpu *vcpu)
|
|
{
|
|
return (vcpu->arch.shared->mas0 >> 16) & 0xfff;
|
|
}
|
|
|
|
static inline int tlbe_is_host_safe(const struct kvm_vcpu *vcpu,
|
|
const struct kvm_book3e_206_tlb_entry *tlbe)
|
|
{
|
|
gpa_t gpa;
|
|
|
|
if (!get_tlb_v(tlbe))
|
|
return 0;
|
|
|
|
#ifndef CONFIG_KVM_BOOKE_HV
|
|
/* Does it match current guest AS? */
|
|
/* XXX what about IS != DS? */
|
|
if (get_tlb_ts(tlbe) != !!(vcpu->arch.shared->msr & MSR_IS))
|
|
return 0;
|
|
#endif
|
|
|
|
gpa = get_tlb_raddr(tlbe);
|
|
if (!gfn_to_memslot(vcpu->kvm, gpa >> PAGE_SHIFT))
|
|
/* Mapping is not for RAM. */
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static inline struct kvm_book3e_206_tlb_entry *get_entry(
|
|
struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel, int entry)
|
|
{
|
|
int offset = vcpu_e500->gtlb_offset[tlbsel];
|
|
return &vcpu_e500->gtlb_arch[offset + entry];
|
|
}
|
|
|
|
void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500,
|
|
struct kvm_book3e_206_tlb_entry *gtlbe);
|
|
void kvmppc_e500_tlbil_all(struct kvmppc_vcpu_e500 *vcpu_e500);
|
|
|
|
#ifdef CONFIG_KVM_BOOKE_HV
|
|
#define kvmppc_e500_get_tlb_stid(vcpu, gtlbe) get_tlb_tid(gtlbe)
|
|
#define get_tlbmiss_tid(vcpu) get_cur_pid(vcpu)
|
|
#define get_tlb_sts(gtlbe) (gtlbe->mas1 & MAS1_TS)
|
|
|
|
/*
|
|
* These functions should be called with preemption disabled
|
|
* and the returned value is valid only in that context
|
|
*/
|
|
static inline int get_thread_specific_lpid(int vm_lpid)
|
|
{
|
|
int vcpu_lpid = vm_lpid;
|
|
|
|
if (threads_per_core == 2)
|
|
vcpu_lpid |= smp_processor_id() & 1;
|
|
|
|
return vcpu_lpid;
|
|
}
|
|
|
|
static inline int get_lpid(struct kvm_vcpu *vcpu)
|
|
{
|
|
return get_thread_specific_lpid(vcpu->kvm->arch.lpid);
|
|
}
|
|
#else
|
|
unsigned int kvmppc_e500_get_tlb_stid(struct kvm_vcpu *vcpu,
|
|
struct kvm_book3e_206_tlb_entry *gtlbe);
|
|
|
|
static inline unsigned int get_tlbmiss_tid(struct kvm_vcpu *vcpu)
|
|
{
|
|
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
|
|
unsigned int tidseld = (vcpu->arch.shared->mas4 >> 16) & 0xf;
|
|
|
|
return vcpu_e500->pid[tidseld];
|
|
}
|
|
|
|
/* Force TS=1 for all guest mappings. */
|
|
#define get_tlb_sts(gtlbe) (MAS1_TS)
|
|
#endif /* !BOOKE_HV */
|
|
|
|
static inline bool has_feature(const struct kvm_vcpu *vcpu,
|
|
enum vcpu_ftr ftr)
|
|
{
|
|
bool has_ftr;
|
|
switch (ftr) {
|
|
case VCPU_FTR_MMU_V2:
|
|
has_ftr = ((vcpu->arch.mmucfg & MMUCFG_MAVN) == MMUCFG_MAVN_V2);
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
return has_ftr;
|
|
}
|
|
|
|
#endif /* KVM_E500_H */
|