mirror of https://gitee.com/openkylin/linux.git
553 lines
12 KiB
C
553 lines
12 KiB
C
/*
|
|
* 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
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* 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. 2007
|
|
*
|
|
* Authors: Hollis Blanchard <hollisb@us.ibm.com>
|
|
*/
|
|
|
|
#ifndef __POWERPC_KVM_HOST_H__
|
|
#define __POWERPC_KVM_HOST_H__
|
|
|
|
#include <linux/mutex.h>
|
|
#include <linux/hrtimer.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/types.h>
|
|
#include <linux/kvm_types.h>
|
|
#include <linux/threads.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/kvm_para.h>
|
|
#include <linux/list.h>
|
|
#include <linux/atomic.h>
|
|
#include <asm/kvm_asm.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/page.h>
|
|
#include <asm/cacheflush.h>
|
|
|
|
#define KVM_MAX_VCPUS NR_CPUS
|
|
#define KVM_MAX_VCORES NR_CPUS
|
|
#define KVM_MEMORY_SLOTS 32
|
|
/* memory slots that does not exposed to userspace */
|
|
#define KVM_PRIVATE_MEM_SLOTS 4
|
|
#define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
|
|
|
|
#ifdef CONFIG_KVM_MMIO
|
|
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
|
|
#endif
|
|
|
|
#ifdef CONFIG_KVM_BOOK3S_64_HV
|
|
#include <linux/mmu_notifier.h>
|
|
|
|
#define KVM_ARCH_WANT_MMU_NOTIFIER
|
|
|
|
struct kvm;
|
|
extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
|
|
extern int kvm_age_hva(struct kvm *kvm, unsigned long hva);
|
|
extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
|
|
extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
|
|
|
|
#endif
|
|
|
|
/* We don't currently support large pages. */
|
|
#define KVM_HPAGE_GFN_SHIFT(x) 0
|
|
#define KVM_NR_PAGE_SIZES 1
|
|
#define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
|
|
|
|
#define HPTEG_CACHE_NUM (1 << 15)
|
|
#define HPTEG_HASH_BITS_PTE 13
|
|
#define HPTEG_HASH_BITS_PTE_LONG 12
|
|
#define HPTEG_HASH_BITS_VPTE 13
|
|
#define HPTEG_HASH_BITS_VPTE_LONG 5
|
|
#define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
|
|
#define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
|
|
#define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
|
|
#define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
|
|
|
|
/* Physical Address Mask - allowed range of real mode RAM access */
|
|
#define KVM_PAM 0x0fffffffffffffffULL
|
|
|
|
struct kvm;
|
|
struct kvm_run;
|
|
struct kvm_vcpu;
|
|
|
|
struct lppaca;
|
|
struct slb_shadow;
|
|
struct dtl_entry;
|
|
|
|
struct kvm_vm_stat {
|
|
u32 remote_tlb_flush;
|
|
};
|
|
|
|
struct kvm_vcpu_stat {
|
|
u32 sum_exits;
|
|
u32 mmio_exits;
|
|
u32 dcr_exits;
|
|
u32 signal_exits;
|
|
u32 light_exits;
|
|
/* Account for special types of light exits: */
|
|
u32 itlb_real_miss_exits;
|
|
u32 itlb_virt_miss_exits;
|
|
u32 dtlb_real_miss_exits;
|
|
u32 dtlb_virt_miss_exits;
|
|
u32 syscall_exits;
|
|
u32 isi_exits;
|
|
u32 dsi_exits;
|
|
u32 emulated_inst_exits;
|
|
u32 dec_exits;
|
|
u32 ext_intr_exits;
|
|
u32 halt_wakeup;
|
|
u32 dbell_exits;
|
|
u32 gdbell_exits;
|
|
#ifdef CONFIG_PPC_BOOK3S
|
|
u32 pf_storage;
|
|
u32 pf_instruc;
|
|
u32 sp_storage;
|
|
u32 sp_instruc;
|
|
u32 queue_intr;
|
|
u32 ld;
|
|
u32 ld_slow;
|
|
u32 st;
|
|
u32 st_slow;
|
|
#endif
|
|
};
|
|
|
|
enum kvm_exit_types {
|
|
MMIO_EXITS,
|
|
DCR_EXITS,
|
|
SIGNAL_EXITS,
|
|
ITLB_REAL_MISS_EXITS,
|
|
ITLB_VIRT_MISS_EXITS,
|
|
DTLB_REAL_MISS_EXITS,
|
|
DTLB_VIRT_MISS_EXITS,
|
|
SYSCALL_EXITS,
|
|
ISI_EXITS,
|
|
DSI_EXITS,
|
|
EMULATED_INST_EXITS,
|
|
EMULATED_MTMSRWE_EXITS,
|
|
EMULATED_WRTEE_EXITS,
|
|
EMULATED_MTSPR_EXITS,
|
|
EMULATED_MFSPR_EXITS,
|
|
EMULATED_MTMSR_EXITS,
|
|
EMULATED_MFMSR_EXITS,
|
|
EMULATED_TLBSX_EXITS,
|
|
EMULATED_TLBWE_EXITS,
|
|
EMULATED_RFI_EXITS,
|
|
EMULATED_RFCI_EXITS,
|
|
DEC_EXITS,
|
|
EXT_INTR_EXITS,
|
|
HALT_WAKEUP,
|
|
USR_PR_INST,
|
|
FP_UNAVAIL,
|
|
DEBUG_EXITS,
|
|
TIMEINGUEST,
|
|
DBELL_EXITS,
|
|
GDBELL_EXITS,
|
|
__NUMBER_OF_KVM_EXIT_TYPES
|
|
};
|
|
|
|
/* allow access to big endian 32bit upper/lower parts and 64bit var */
|
|
struct kvmppc_exit_timing {
|
|
union {
|
|
u64 tv64;
|
|
struct {
|
|
u32 tbu, tbl;
|
|
} tv32;
|
|
};
|
|
};
|
|
|
|
struct kvmppc_pginfo {
|
|
unsigned long pfn;
|
|
atomic_t refcnt;
|
|
};
|
|
|
|
struct kvmppc_spapr_tce_table {
|
|
struct list_head list;
|
|
struct kvm *kvm;
|
|
u64 liobn;
|
|
u32 window_size;
|
|
struct page *pages[0];
|
|
};
|
|
|
|
struct kvmppc_linear_info {
|
|
void *base_virt;
|
|
unsigned long base_pfn;
|
|
unsigned long npages;
|
|
struct list_head list;
|
|
atomic_t use_count;
|
|
int type;
|
|
};
|
|
|
|
/*
|
|
* The reverse mapping array has one entry for each HPTE,
|
|
* which stores the guest's view of the second word of the HPTE
|
|
* (including the guest physical address of the mapping),
|
|
* plus forward and backward pointers in a doubly-linked ring
|
|
* of HPTEs that map the same host page. The pointers in this
|
|
* ring are 32-bit HPTE indexes, to save space.
|
|
*/
|
|
struct revmap_entry {
|
|
unsigned long guest_rpte;
|
|
unsigned int forw, back;
|
|
};
|
|
|
|
/*
|
|
* We use the top bit of each memslot->rmap entry as a lock bit,
|
|
* and bit 32 as a present flag. The bottom 32 bits are the
|
|
* index in the guest HPT of a HPTE that points to the page.
|
|
*/
|
|
#define KVMPPC_RMAP_LOCK_BIT 63
|
|
#define KVMPPC_RMAP_RC_SHIFT 32
|
|
#define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
|
|
#define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
|
|
#define KVMPPC_RMAP_PRESENT 0x100000000ul
|
|
#define KVMPPC_RMAP_INDEX 0xfffffffful
|
|
|
|
/* Low-order bits in kvm->arch.slot_phys[][] */
|
|
#define KVMPPC_PAGE_ORDER_MASK 0x1f
|
|
#define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
|
|
#define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
|
|
#define KVMPPC_GOT_PAGE 0x80
|
|
|
|
struct kvm_arch_memory_slot {
|
|
};
|
|
|
|
struct kvm_arch {
|
|
unsigned int lpid;
|
|
#ifdef CONFIG_KVM_BOOK3S_64_HV
|
|
unsigned long hpt_virt;
|
|
struct revmap_entry *revmap;
|
|
unsigned int host_lpid;
|
|
unsigned long host_lpcr;
|
|
unsigned long sdr1;
|
|
unsigned long host_sdr1;
|
|
int tlbie_lock;
|
|
unsigned long lpcr;
|
|
unsigned long rmor;
|
|
struct kvmppc_linear_info *rma;
|
|
unsigned long vrma_slb_v;
|
|
int rma_setup_done;
|
|
int using_mmu_notifiers;
|
|
u32 hpt_order;
|
|
atomic_t vcpus_running;
|
|
unsigned long hpt_npte;
|
|
unsigned long hpt_mask;
|
|
spinlock_t slot_phys_lock;
|
|
unsigned long *slot_phys[KVM_MEM_SLOTS_NUM];
|
|
int slot_npages[KVM_MEM_SLOTS_NUM];
|
|
unsigned short last_vcpu[NR_CPUS];
|
|
struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
|
|
struct kvmppc_linear_info *hpt_li;
|
|
#endif /* CONFIG_KVM_BOOK3S_64_HV */
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
struct list_head spapr_tce_tables;
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
* Struct for a virtual core.
|
|
* Note: entry_exit_count combines an entry count in the bottom 8 bits
|
|
* and an exit count in the next 8 bits. This is so that we can
|
|
* atomically increment the entry count iff the exit count is 0
|
|
* without taking the lock.
|
|
*/
|
|
struct kvmppc_vcore {
|
|
int n_runnable;
|
|
int n_busy;
|
|
int num_threads;
|
|
int entry_exit_count;
|
|
int n_woken;
|
|
int nap_count;
|
|
int napping_threads;
|
|
u16 pcpu;
|
|
u8 vcore_state;
|
|
u8 in_guest;
|
|
struct list_head runnable_threads;
|
|
spinlock_t lock;
|
|
wait_queue_head_t wq;
|
|
u64 stolen_tb;
|
|
u64 preempt_tb;
|
|
struct kvm_vcpu *runner;
|
|
};
|
|
|
|
#define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
|
|
#define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
|
|
|
|
/* Values for vcore_state */
|
|
#define VCORE_INACTIVE 0
|
|
#define VCORE_RUNNING 1
|
|
#define VCORE_EXITING 2
|
|
#define VCORE_SLEEPING 3
|
|
|
|
/*
|
|
* Struct used to manage memory for a virtual processor area
|
|
* registered by a PAPR guest. There are three types of area
|
|
* that a guest can register.
|
|
*/
|
|
struct kvmppc_vpa {
|
|
void *pinned_addr; /* Address in kernel linear mapping */
|
|
void *pinned_end; /* End of region */
|
|
unsigned long next_gpa; /* Guest phys addr for update */
|
|
unsigned long len; /* Number of bytes required */
|
|
u8 update_pending; /* 1 => update pinned_addr from next_gpa */
|
|
};
|
|
|
|
struct kvmppc_pte {
|
|
ulong eaddr;
|
|
u64 vpage;
|
|
ulong raddr;
|
|
bool may_read : 1;
|
|
bool may_write : 1;
|
|
bool may_execute : 1;
|
|
};
|
|
|
|
struct kvmppc_mmu {
|
|
/* book3s_64 only */
|
|
void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
|
|
u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
|
|
u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
|
|
void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
|
|
void (*slbia)(struct kvm_vcpu *vcpu);
|
|
/* book3s */
|
|
void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
|
|
u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
|
|
int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
|
|
void (*reset_msr)(struct kvm_vcpu *vcpu);
|
|
void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
|
|
int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
|
|
u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
|
|
bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
|
|
};
|
|
|
|
struct kvmppc_slb {
|
|
u64 esid;
|
|
u64 vsid;
|
|
u64 orige;
|
|
u64 origv;
|
|
bool valid : 1;
|
|
bool Ks : 1;
|
|
bool Kp : 1;
|
|
bool nx : 1;
|
|
bool large : 1; /* PTEs are 16MB */
|
|
bool tb : 1; /* 1TB segment */
|
|
bool class : 1;
|
|
};
|
|
|
|
struct kvm_vcpu_arch {
|
|
ulong host_stack;
|
|
u32 host_pid;
|
|
#ifdef CONFIG_PPC_BOOK3S
|
|
struct kvmppc_slb slb[64];
|
|
int slb_max; /* 1 + index of last valid entry in slb[] */
|
|
int slb_nr; /* total number of entries in SLB */
|
|
struct kvmppc_mmu mmu;
|
|
#endif
|
|
|
|
ulong gpr[32];
|
|
|
|
u64 fpr[32];
|
|
u64 fpscr;
|
|
|
|
#ifdef CONFIG_SPE
|
|
ulong evr[32];
|
|
ulong spefscr;
|
|
ulong host_spefscr;
|
|
u64 acc;
|
|
#endif
|
|
#ifdef CONFIG_ALTIVEC
|
|
vector128 vr[32];
|
|
vector128 vscr;
|
|
#endif
|
|
|
|
#ifdef CONFIG_VSX
|
|
u64 vsr[64];
|
|
#endif
|
|
|
|
#ifdef CONFIG_KVM_BOOKE_HV
|
|
u32 host_mas4;
|
|
u32 host_mas6;
|
|
u32 shadow_epcr;
|
|
u32 epcr;
|
|
u32 shadow_msrp;
|
|
u32 eplc;
|
|
u32 epsc;
|
|
u32 oldpir;
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC_BOOK3S
|
|
/* For Gekko paired singles */
|
|
u32 qpr[32];
|
|
#endif
|
|
|
|
ulong pc;
|
|
ulong ctr;
|
|
ulong lr;
|
|
|
|
ulong xer;
|
|
u32 cr;
|
|
|
|
#ifdef CONFIG_PPC_BOOK3S
|
|
ulong hflags;
|
|
ulong guest_owned_ext;
|
|
ulong purr;
|
|
ulong spurr;
|
|
ulong dscr;
|
|
ulong amr;
|
|
ulong uamor;
|
|
u32 ctrl;
|
|
ulong dabr;
|
|
#endif
|
|
u32 vrsave; /* also USPRG0 */
|
|
u32 mmucr;
|
|
/* shadow_msr is unused for BookE HV */
|
|
ulong shadow_msr;
|
|
ulong csrr0;
|
|
ulong csrr1;
|
|
ulong dsrr0;
|
|
ulong dsrr1;
|
|
ulong mcsrr0;
|
|
ulong mcsrr1;
|
|
ulong mcsr;
|
|
u32 dec;
|
|
#ifdef CONFIG_BOOKE
|
|
u32 decar;
|
|
#endif
|
|
u32 tbl;
|
|
u32 tbu;
|
|
u32 tcr;
|
|
ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
|
|
u32 ivor[64];
|
|
ulong ivpr;
|
|
u32 pvr;
|
|
|
|
u32 shadow_pid;
|
|
u32 shadow_pid1;
|
|
u32 pid;
|
|
u32 swap_pid;
|
|
|
|
u32 ccr0;
|
|
u32 ccr1;
|
|
u32 dbcr0;
|
|
u32 dbcr1;
|
|
u32 dbsr;
|
|
|
|
u64 mmcr[3];
|
|
u32 pmc[8];
|
|
|
|
#ifdef CONFIG_KVM_EXIT_TIMING
|
|
struct mutex exit_timing_lock;
|
|
struct kvmppc_exit_timing timing_exit;
|
|
struct kvmppc_exit_timing timing_last_enter;
|
|
u32 last_exit_type;
|
|
u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
|
|
u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
|
|
u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
|
|
u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
|
|
u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
|
|
u64 timing_last_exit;
|
|
struct dentry *debugfs_exit_timing;
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC_BOOK3S
|
|
ulong fault_dar;
|
|
u32 fault_dsisr;
|
|
#endif
|
|
|
|
#ifdef CONFIG_BOOKE
|
|
ulong fault_dear;
|
|
ulong fault_esr;
|
|
ulong queued_dear;
|
|
ulong queued_esr;
|
|
u32 tlbcfg[4];
|
|
u32 mmucfg;
|
|
u32 epr;
|
|
#endif
|
|
gpa_t paddr_accessed;
|
|
gva_t vaddr_accessed;
|
|
|
|
u8 io_gpr; /* GPR used as IO source/target */
|
|
u8 mmio_is_bigendian;
|
|
u8 mmio_sign_extend;
|
|
u8 dcr_needed;
|
|
u8 dcr_is_write;
|
|
u8 osi_needed;
|
|
u8 osi_enabled;
|
|
u8 papr_enabled;
|
|
u8 sane;
|
|
u8 cpu_type;
|
|
u8 hcall_needed;
|
|
|
|
u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
|
|
|
|
struct hrtimer dec_timer;
|
|
struct tasklet_struct tasklet;
|
|
u64 dec_jiffies;
|
|
u64 dec_expires;
|
|
unsigned long pending_exceptions;
|
|
u16 last_cpu;
|
|
u8 ceded;
|
|
u8 prodded;
|
|
u32 last_inst;
|
|
|
|
wait_queue_head_t *wqp;
|
|
struct kvmppc_vcore *vcore;
|
|
int ret;
|
|
int trap;
|
|
int state;
|
|
int ptid;
|
|
bool timer_running;
|
|
wait_queue_head_t cpu_run;
|
|
|
|
struct kvm_vcpu_arch_shared *shared;
|
|
unsigned long magic_page_pa; /* phys addr to map the magic page to */
|
|
unsigned long magic_page_ea; /* effect. addr to map the magic page to */
|
|
|
|
#ifdef CONFIG_KVM_BOOK3S_64_HV
|
|
struct kvm_vcpu_arch_shared shregs;
|
|
|
|
unsigned long pgfault_addr;
|
|
long pgfault_index;
|
|
unsigned long pgfault_hpte[2];
|
|
|
|
struct list_head run_list;
|
|
struct task_struct *run_task;
|
|
struct kvm_run *kvm_run;
|
|
pgd_t *pgdir;
|
|
|
|
spinlock_t vpa_update_lock;
|
|
struct kvmppc_vpa vpa;
|
|
struct kvmppc_vpa dtl;
|
|
struct dtl_entry *dtl_ptr;
|
|
unsigned long dtl_index;
|
|
u64 stolen_logged;
|
|
struct kvmppc_vpa slb_shadow;
|
|
#endif
|
|
};
|
|
|
|
/* Values for vcpu->arch.state */
|
|
#define KVMPPC_VCPU_STOPPED 0
|
|
#define KVMPPC_VCPU_BUSY_IN_HOST 1
|
|
#define KVMPPC_VCPU_RUNNABLE 2
|
|
|
|
/* Values for vcpu->arch.io_gpr */
|
|
#define KVM_MMIO_REG_MASK 0x001f
|
|
#define KVM_MMIO_REG_EXT_MASK 0xffe0
|
|
#define KVM_MMIO_REG_GPR 0x0000
|
|
#define KVM_MMIO_REG_FPR 0x0020
|
|
#define KVM_MMIO_REG_QPR 0x0040
|
|
#define KVM_MMIO_REG_FQPR 0x0060
|
|
|
|
#define __KVM_HAVE_ARCH_WQP
|
|
|
|
#endif /* __POWERPC_KVM_HOST_H__ */
|