Release 4.14 arch/powerpc/kvm/e500.h
/*
* 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 {
kvm_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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Scott Wood | 25 | 100.00% | 1 | 100.00% |
| Total | 25 | 100.00% | 1 | 100.00% |
/* 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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 22 | 88.00% | 1 | 33.33% |
| Liu Yu | 2 | 8.00% | 1 | 33.33% |
| Scott Wood | 1 | 4.00% | 1 | 33.33% |
| Total | 25 | 100.00% | 3 | 100.00% |
static inline gva_t get_tlb_eaddr(const struct kvm_book3e_206_tlb_entry *tlbe)
{
return tlbe->mas2 & MAS2_EPN;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 18 | 90.00% | 1 | 33.33% |
| Scott Wood | 1 | 5.00% | 1 | 33.33% |
| Mihai Caraman | 1 | 5.00% | 1 | 33.33% |
| Total | 20 | 100.00% | 3 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 28 | 96.55% | 1 | 50.00% |
| Scott Wood | 1 | 3.45% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 30 | 96.77% | 1 | 50.00% |
| Scott Wood | 1 | 3.23% | 1 | 50.00% |
| Total | 31 | 100.00% | 2 | 100.00% |
static inline u64 get_tlb_raddr(const struct kvm_book3e_206_tlb_entry *tlbe)
{
return tlbe->mas7_3 & ~0xfffULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 17 | 80.95% | 1 | 50.00% |
| Scott Wood | 4 | 19.05% | 1 | 50.00% |
| Total | 21 | 100.00% | 2 | 100.00% |
static inline unsigned int
get_tlb_tid(const struct kvm_book3e_206_tlb_entry *tlbe)
{
return (tlbe->mas1 >> 16) & 0xff;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 24 | 96.00% | 1 | 50.00% |
| Scott Wood | 1 | 4.00% | 1 | 50.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
static inline unsigned int
get_tlb_ts(const struct kvm_book3e_206_tlb_entry *tlbe)
{
return (tlbe->mas1 >> 12) & 0x1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 24 | 96.00% | 1 | 50.00% |
| Scott Wood | 1 | 4.00% | 1 | 50.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
static inline unsigned int
get_tlb_v(const struct kvm_book3e_206_tlb_entry *tlbe)
{
return (tlbe->mas1 >> 31) & 0x1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 24 | 96.00% | 1 | 50.00% |
| Scott Wood | 1 | 4.00% | 1 | 50.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
static inline unsigned int
get_tlb_iprot(const struct kvm_book3e_206_tlb_entry *tlbe)
{
return (tlbe->mas1 >> 30) & 0x1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 24 | 96.00% | 1 | 50.00% |
| Scott Wood | 1 | 4.00% | 1 | 50.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
static inline unsigned int
get_tlb_tsize(const struct kvm_book3e_206_tlb_entry *tlbe)
{
return (tlbe->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Scott Wood | 25 | 100.00% | 1 | 100.00% |
| Total | 25 | 100.00% | 1 | 100.00% |
static inline unsigned int get_cur_pid(struct kvm_vcpu *vcpu)
{
return vcpu->arch.pid & 0xff;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 22 | 100.00% | 1 | 100.00% |
| Total | 22 | 100.00% | 1 | 100.00% |
static inline unsigned int get_cur_as(struct kvm_vcpu *vcpu)
{
return !!(vcpu->arch.shared->msr & (MSR_IS | MSR_DS));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Liu Yu | 32 | 100.00% | 1 | 100.00% |
| Total | 32 | 100.00% | 1 | 100.00% |
static inline unsigned int get_cur_pr(struct kvm_vcpu *vcpu)
{
return !!(vcpu->arch.shared->msr & MSR_PR);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Liu Yu | 28 | 100.00% | 1 | 100.00% |
| Total | 28 | 100.00% | 1 | 100.00% |
static inline unsigned int get_cur_spid(const struct kvm_vcpu *vcpu)
{
return (vcpu->arch.shared->mas6 >> 16) & 0xff;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 22 | 75.86% | 1 | 50.00% |
| Scott Wood | 7 | 24.14% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
static inline unsigned int get_cur_sas(const struct kvm_vcpu *vcpu)
{
return vcpu->arch.shared->mas6 & 0x1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 18 | 72.00% | 1 | 50.00% |
| Scott Wood | 7 | 28.00% | 1 | 50.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 22 | 73.33% | 1 | 33.33% |
| Scott Wood | 7 | 23.33% | 1 | 33.33% |
| Liu Yu | 1 | 3.33% | 1 | 33.33% |
| Total | 30 | 100.00% | 3 | 100.00% |
static inline unsigned int get_tlb_nv_bit(const struct kvm_vcpu *vcpu)
{
return vcpu->arch.shared->mas0 & 0xfff;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 18 | 72.00% | 1 | 50.00% |
| Scott Wood | 7 | 28.00% | 1 | 50.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
static inline unsigned int get_tlb_esel_bit(const struct kvm_vcpu *vcpu)
{
return (vcpu->arch.shared->mas0 >> 16) & 0xfff;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 22 | 75.86% | 1 | 50.00% |
| Scott Wood | 7 | 24.14% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 84 | 91.30% | 1 | 25.00% |
| Scott Wood | 6 | 6.52% | 2 | 50.00% |
| Alexander Graf | 2 | 2.17% | 1 | 25.00% |
| Total | 92 | 100.00% | 4 | 100.00% |
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];
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Scott Wood | 41 | 100.00% | 1 | 100.00% |
| Total | 41 | 100.00% | 1 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mihai Caraman | 31 | 100.00% | 1 | 100.00% |
| Total | 31 | 100.00% | 1 | 100.00% |
static inline int get_lpid(struct kvm_vcpu *vcpu)
{
return get_thread_specific_lpid(vcpu->kvm->arch.lpid);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mihai Caraman | 24 | 100.00% | 1 | 100.00% |
| Total | 24 | 100.00% | 1 | 100.00% |
#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];
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Scott Wood | 49 | 100.00% | 1 | 100.00% |
| Total | 49 | 100.00% | 1 | 100.00% |
/* 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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mihai Caraman | 53 | 100.00% | 1 | 100.00% |
| Total | 53 | 100.00% | 1 | 100.00% |
#endif /* KVM_E500_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hollis Blanchard | 538 | 41.01% | 1 | 3.85% |
| Scott Wood | 518 | 39.48% | 10 | 38.46% |
| Mihai Caraman | 160 | 12.20% | 5 | 19.23% |
| Liu Yu | 69 | 5.26% | 3 | 11.54% |
| Bharat Bhushan | 18 | 1.37% | 3 | 11.54% |
| Alexander Graf | 8 | 0.61% | 3 | 11.54% |
| Dan J Williams | 1 | 0.08% | 1 | 3.85% |
| Total | 1312 | 100.00% | 26 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.