[linux-2.6-block.git] / arch / powerpc / include / asm / kvm_host.h

/*
 * 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>

#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;

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;
#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,
	DEC_EXITS,
	EXT_INTR_EXITS,
	HALT_WAKEUP,
	USR_PR_INST,
	FP_UNAVAIL,
	DEBUG_EXITS,
	TIMEINGUEST,
	__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_rma_info {
	void		*base_virt;
	unsigned long	 base_pfn;
	unsigned long	 npages;
	struct list_head list;
	atomic_t 	 use_count;
};

/*
 * 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_REF_BIT	33
#define KVMPPC_RMAP_REFERENCED	(1ul << KVMPPC_RMAP_REF_BIT)
#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 {
#ifdef CONFIG_KVM_BOOK3S_64_HV
	unsigned long hpt_virt;
	struct revmap_entry *revmap;
	unsigned int lpid;
	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_rma_info *rma;
	unsigned long vrma_slb_v;
	int rma_setup_done;
	int using_mmu_notifiers;
	struct list_head spapr_tce_tables;
	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];
#endif /* CONFIG_KVM_BOOK3S_64_HV */
};

/*
 * 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;
};

#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 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_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;
	ulong shadow_msr;
	ulong csrr0;
	ulong csrr1;
	ulong dsrr0;
	ulong dsrr1;
	ulong mcsrr0;
	ulong mcsrr1;
	ulong mcsr;
	u32 dec;
	u32 decar;
	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;
#endif
	gpa_t paddr_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;

	struct lppaca *vpa;
	struct slb_shadow *slb_shadow;
	struct dtl *dtl;
	struct dtl *dtl_end;

	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;
#endif
};

/* Values for vcpu->arch.state */
#define KVMPPC_VCPU_STOPPED		0
#define KVMPPC_VCPU_BUSY_IN_HOST	1
#define KVMPPC_VCPU_RUNNABLE		2

#endif /* __POWERPC_KVM_HOST_H__ */
Commit	Line	Data
bbf45ba5 HB	1	/*
	2	* This program is free software; you can redistribute it and/or modify
	3	* it under the terms of the GNU General Public License, version 2, as
	4	* published by the Free Software Foundation.
	5	*
	6	* This program is distributed in the hope that it will be useful,
	7	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	8	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	9	* GNU General Public License for more details.
	10	*
	11	* You should have received a copy of the GNU General Public License
	12	* along with this program; if not, write to the Free Software
	13	* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	14	*
	15	* Copyright IBM Corp. 2007
	16	*
	17	* Authors: Hollis Blanchard <hollisb@us.ibm.com>
	18	*/
	19
	20	#ifndef __POWERPC_KVM_HOST_H__
	21	#define __POWERPC_KVM_HOST_H__
	22
	23	#include <linux/mutex.h>
544c6761 AG	24	#include <linux/hrtimer.h>
544c6761 AG	25	#include <linux/interrupt.h>
bbf45ba5 HB	26	#include <linux/types.h>
bbf45ba5 HB	27	#include <linux/kvm_types.h>
371fefd6 PM	28	#include <linux/threads.h>
371fefd6 PM	29	#include <linux/spinlock.h>
96bc451a	30	#include <linux/kvm_para.h>
aa04b4cc PM	31	#include <linux/list.h>
aa04b4cc PM	32	#include <linux/atomic.h>
bbf45ba5	33	#include <asm/kvm_asm.h>
371fefd6	34	#include <asm/processor.h>
342d3db7	35	#include <asm/page.h>
bbf45ba5	36
371fefd6 PM	37	#define KVM_MAX_VCPUS NR_CPUS
371fefd6 PM	38	#define KVM_MAX_VCORES NR_CPUS
bbf45ba5 HB	39	#define KVM_MEMORY_SLOTS 32
	40	/* memory slots that does not exposed to userspace */
	41	#define KVM_PRIVATE_MEM_SLOTS 4
b2b2f165	42	#define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
bbf45ba5	43
de56a948	44	#ifdef CONFIG_KVM_MMIO
588968b6	45	#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
de56a948	46	#endif
588968b6	47
342d3db7 PM	48	#ifdef CONFIG_KVM_BOOK3S_64_HV
	49	#include <linux/mmu_notifier.h>
	50
	51	#define KVM_ARCH_WANT_MMU_NOTIFIER
	52
	53	struct kvm;
	54	extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
	55	extern int kvm_age_hva(struct kvm *kvm, unsigned long hva);
	56	extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
	57	extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
	58
	59	#endif
	60
bbf45ba5	61	/* We don't currently support large pages. */
82855413	62	#define KVM_HPAGE_GFN_SHIFT(x) 0
ec04b260 JR	63	#define KVM_NR_PAGE_SIZES 1
ec04b260 JR	64	#define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
bbf45ba5	65
fef093be AG	66	#define HPTEG_CACHE_NUM (1 << 15)
fef093be AG	67	#define HPTEG_HASH_BITS_PTE 13
2d27fc5e	68	#define HPTEG_HASH_BITS_PTE_LONG 12
fef093be AG	69	#define HPTEG_HASH_BITS_VPTE 13
	70	#define HPTEG_HASH_BITS_VPTE_LONG 5
	71	#define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
2d27fc5e	72	#define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
fef093be AG	73	#define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
fef093be AG	74	#define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
ca95150b	75
28e83b4f AG	76	/* Physical Address Mask - allowed range of real mode RAM access */
	77	#define KVM_PAM 0x0fffffffffffffffULL
	78
bbf45ba5 HB	79	struct kvm;
	80	struct kvm_run;
	81	struct kvm_vcpu;
	82
a8606e20 PM	83	struct lppaca;
	84	struct slb_shadow;
	85	struct dtl;
	86
bbf45ba5 HB	87	struct kvm_vm_stat {
	88	u32 remote_tlb_flush;
	89	};
	90
	91	struct kvm_vcpu_stat {
	92	u32 sum_exits;
	93	u32 mmio_exits;
	94	u32 dcr_exits;
	95	u32 signal_exits;
	96	u32 light_exits;
	97	/* Account for special types of light exits: */
	98	u32 itlb_real_miss_exits;
	99	u32 itlb_virt_miss_exits;
	100	u32 dtlb_real_miss_exits;
	101	u32 dtlb_virt_miss_exits;
	102	u32 syscall_exits;
	103	u32 isi_exits;
	104	u32 dsi_exits;
	105	u32 emulated_inst_exits;
	106	u32 dec_exits;
	107	u32 ext_intr_exits;
45c5eb67	108	u32 halt_wakeup;
00c3a37c	109	#ifdef CONFIG_PPC_BOOK3S
ca95150b AG	110	u32 pf_storage;
	111	u32 pf_instruc;
	112	u32 sp_storage;
	113	u32 sp_instruc;
	114	u32 queue_intr;
	115	u32 ld;
	116	u32 ld_slow;
	117	u32 st;
	118	u32 st_slow;
	119	#endif
bbf45ba5 HB	120	};
bbf45ba5 HB	121
73e75b41 HB	122	enum kvm_exit_types {
	123	MMIO_EXITS,
	124	DCR_EXITS,
	125	SIGNAL_EXITS,
	126	ITLB_REAL_MISS_EXITS,
	127	ITLB_VIRT_MISS_EXITS,
	128	DTLB_REAL_MISS_EXITS,
	129	DTLB_VIRT_MISS_EXITS,
	130	SYSCALL_EXITS,
	131	ISI_EXITS,
	132	DSI_EXITS,
	133	EMULATED_INST_EXITS,
	134	EMULATED_MTMSRWE_EXITS,
	135	EMULATED_WRTEE_EXITS,
	136	EMULATED_MTSPR_EXITS,
	137	EMULATED_MFSPR_EXITS,
	138	EMULATED_MTMSR_EXITS,
	139	EMULATED_MFMSR_EXITS,
	140	EMULATED_TLBSX_EXITS,
	141	EMULATED_TLBWE_EXITS,
	142	EMULATED_RFI_EXITS,
	143	DEC_EXITS,
	144	EXT_INTR_EXITS,
	145	HALT_WAKEUP,
	146	USR_PR_INST,
	147	FP_UNAVAIL,
	148	DEBUG_EXITS,
	149	TIMEINGUEST,
	150	__NUMBER_OF_KVM_EXIT_TYPES
	151	};
	152
73e75b41	153	/* allow access to big endian 32bit upper/lower parts and 64bit var */
7b701591	154	struct kvmppc_exit_timing {
73e75b41 HB	155	union {
	156	u64 tv64;
	157	struct {
	158	u32 tbu, tbl;
	159	} tv32;
	160	};
	161	};
73e75b41	162
de56a948 PM	163	struct kvmppc_pginfo {
	164	unsigned long pfn;
	165	atomic_t refcnt;
	166	};
	167
54738c09 DG	168	struct kvmppc_spapr_tce_table {
	169	struct list_head list;
	170	struct kvm *kvm;
	171	u64 liobn;
	172	u32 window_size;
	173	struct page *pages[0];
	174	};
	175
aa04b4cc PM	176	struct kvmppc_rma_info {
	177	void *base_virt;
	178	unsigned long base_pfn;
	179	unsigned long npages;
	180	struct list_head list;
	181	atomic_t use_count;
	182	};
	183
8936dda4 PM	184	/*
	185	* The reverse mapping array has one entry for each HPTE,
	186	* which stores the guest's view of the second word of the HPTE
06ce2c63 PM	187	* (including the guest physical address of the mapping),
	188	* plus forward and backward pointers in a doubly-linked ring
	189	* of HPTEs that map the same host page. The pointers in this
	190	* ring are 32-bit HPTE indexes, to save space.
8936dda4 PM	191	*/
	192	struct revmap_entry {
	193	unsigned long guest_rpte;
06ce2c63	194	unsigned int forw, back;
8936dda4 PM	195	};
8936dda4 PM	196
06ce2c63 PM	197	/*
	198	* We use the top bit of each memslot->rmap entry as a lock bit,
	199	* and bit 32 as a present flag. The bottom 32 bits are the
	200	* index in the guest HPT of a HPTE that points to the page.
	201	*/
	202	#define KVMPPC_RMAP_LOCK_BIT 63
	203	#define KVMPPC_RMAP_REF_BIT 33
	204	#define KVMPPC_RMAP_REFERENCED (1ul << KVMPPC_RMAP_REF_BIT)
	205	#define KVMPPC_RMAP_PRESENT 0x100000000ul
	206	#define KVMPPC_RMAP_INDEX 0xfffffffful
	207
b2b2f165	208	/* Low-order bits in kvm->arch.slot_phys[][] */
da9d1d7f	209	#define KVMPPC_PAGE_ORDER_MASK 0x1f
9d0ef5ea PM	210	#define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
9d0ef5ea PM	211	#define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
b2b2f165 PM	212	#define KVMPPC_GOT_PAGE 0x80
b2b2f165 PM	213
bbf45ba5	214	struct kvm_arch {
de56a948 PM	215	#ifdef CONFIG_KVM_BOOK3S_64_HV
de56a948 PM	216	unsigned long hpt_virt;
8936dda4	217	struct revmap_entry *revmap;
de56a948 PM	218	unsigned int lpid;
	219	unsigned int host_lpid;
	220	unsigned long host_lpcr;
	221	unsigned long sdr1;
	222	unsigned long host_sdr1;
	223	int tlbie_lock;
aa04b4cc PM	224	unsigned long lpcr;
	225	unsigned long rmor;
	226	struct kvmppc_rma_info *rma;
697d3899	227	unsigned long vrma_slb_v;
c77162de	228	int rma_setup_done;
342d3db7	229	int using_mmu_notifiers;
54738c09	230	struct list_head spapr_tce_tables;
c77162de	231	spinlock_t slot_phys_lock;
b2b2f165 PM	232	unsigned long *slot_phys[KVM_MEM_SLOTS_NUM];
b2b2f165 PM	233	int slot_npages[KVM_MEM_SLOTS_NUM];
de56a948	234	unsigned short last_vcpu[NR_CPUS];
371fefd6	235	struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
de56a948	236	#endif /* CONFIG_KVM_BOOK3S_64_HV */
bbf45ba5 HB	237	};
bbf45ba5 HB	238
371fefd6 PM	239	/*
	240	* Struct for a virtual core.
	241	* Note: entry_exit_count combines an entry count in the bottom 8 bits
	242	* and an exit count in the next 8 bits. This is so that we can
	243	* atomically increment the entry count iff the exit count is 0
	244	* without taking the lock.
	245	*/
	246	struct kvmppc_vcore {
	247	int n_runnable;
19ccb76a	248	int n_busy;
371fefd6 PM	249	int num_threads;
	250	int entry_exit_count;
	251	int n_woken;
	252	int nap_count;
19ccb76a	253	int napping_threads;
371fefd6	254	u16 pcpu;
19ccb76a	255	u8 vcore_state;
371fefd6 PM	256	u8 in_guest;
	257	struct list_head runnable_threads;
	258	spinlock_t lock;
19ccb76a	259	wait_queue_head_t wq;
371fefd6 PM	260	};
	261
	262	#define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
	263	#define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
	264
19ccb76a PM	265	/* Values for vcore_state */
	266	#define VCORE_INACTIVE 0
	267	#define VCORE_RUNNING 1
	268	#define VCORE_EXITING 2
	269	#define VCORE_SLEEPING 3
	270
ca95150b	271	struct kvmppc_pte {
af7b4d10	272	ulong eaddr;
ca95150b	273	u64 vpage;
af7b4d10	274	ulong raddr;
3ed9c6d2 AG	275	bool may_read : 1;
	276	bool may_write : 1;
	277	bool may_execute : 1;
ca95150b AG	278	};
	279
	280	struct kvmppc_mmu {
	281	/* book3s_64 only */
	282	void (slbmte)(struct kvm_vcpu vcpu, u64 rb, u64 rs);
	283	u64 (slbmfee)(struct kvm_vcpu vcpu, u64 slb_nr);
	284	u64 (slbmfev)(struct kvm_vcpu vcpu, u64 slb_nr);
	285	void (slbie)(struct kvm_vcpu vcpu, u64 slb_nr);
	286	void (slbia)(struct kvm_vcpu vcpu);
	287	/* book3s */
	288	void (mtsrin)(struct kvm_vcpu vcpu, u32 srnum, ulong value);
	289	u32 (mfsrin)(struct kvm_vcpu vcpu, u32 srnum);
	290	int (xlate)(struct kvm_vcpu vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
	291	void (reset_msr)(struct kvm_vcpu vcpu);
	292	void (tlbie)(struct kvm_vcpu vcpu, ulong addr, bool large);
af7b4d10	293	int (esid_to_vsid)(struct kvm_vcpu vcpu, ulong esid, u64 *vsid);
ca95150b AG	294	u64 (ea_to_vp)(struct kvm_vcpu vcpu, gva_t eaddr, bool data);
	295	bool (is_dcbz32)(struct kvm_vcpu vcpu);
	296	};
	297
c4befc58 PM	298	struct kvmppc_slb {
	299	u64 esid;
	300	u64 vsid;
	301	u64 orige;
	302	u64 origv;
	303	bool valid : 1;
	304	bool Ks : 1;
	305	bool Kp : 1;
	306	bool nx : 1;
	307	bool large : 1; /* PTEs are 16MB */
	308	bool tb : 1; /* 1TB segment */
	309	bool class : 1;
ca95150b AG	310	};
ca95150b AG	311
bbf45ba5	312	struct kvm_vcpu_arch {
ca95150b	313	ulong host_stack;
bbf45ba5	314	u32 host_pid;
00c3a37c	315	#ifdef CONFIG_PPC_BOOK3S
c4befc58	316	struct kvmppc_slb slb[64];
de56a948	317	int slb_max; /* 1 + index of last valid entry in slb[] */
c4befc58	318	int slb_nr; /* total number of entries in SLB */
ca95150b AG	319	struct kvmppc_mmu mmu;
ca95150b AG	320	#endif
bbf45ba5	321
5cf8ca22	322	ulong gpr[32];
bbf45ba5	323
180a34d2	324	u64 fpr[32];
c62e096d	325	u64 fpscr;
180a34d2	326
4cd35f67 SW	327	#ifdef CONFIG_SPE
	328	ulong evr[32];
	329	ulong spefscr;
	330	ulong host_spefscr;
	331	u64 acc;
	332	#endif
180a34d2 AG	333	#ifdef CONFIG_ALTIVEC
	334	vector128 vr[32];
	335	vector128 vscr;
	336	#endif
	337
	338	#ifdef CONFIG_VSX
de56a948	339	u64 vsr[64];
180a34d2 AG	340	#endif
180a34d2 AG	341
5aa9e2f4 AG	342	#ifdef CONFIG_PPC_BOOK3S
	343	/* For Gekko paired singles */
	344	u32 qpr[32];
	345	#endif
	346
5cf8ca22	347	ulong pc;
5cf8ca22 HB	348	ulong ctr;
5cf8ca22 HB	349	ulong lr;
7e57cba0	350
5cf8ca22	351	ulong xer;
7e57cba0	352	u32 cr;
bbf45ba5	353
00c3a37c	354	#ifdef CONFIG_PPC_BOOK3S
ca95150b	355	ulong hflags;
180a34d2	356	ulong guest_owned_ext;
de56a948 PM	357	ulong purr;
de56a948 PM	358	ulong spurr;
de56a948 PM	359	ulong dscr;
	360	ulong amr;
	361	ulong uamor;
	362	u32 ctrl;
	363	ulong dabr;
ca95150b	364	#endif
eab17672	365	u32 vrsave; /* also USPRG0 */
bbf45ba5	366	u32 mmucr;
ecee273f	367	ulong shadow_msr;
5cf8ca22 HB	368	ulong csrr0;
	369	ulong csrr1;
	370	ulong dsrr0;
	371	ulong dsrr1;
5ce941ee SW	372	ulong mcsrr0;
	373	ulong mcsrr1;
	374	ulong mcsr;
bbf45ba5 HB	375	u32 dec;
	376	u32 decar;
	377	u32 tbl;
	378	u32 tbu;
	379	u32 tcr;
dfd4d47e	380	ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
bb3a8a17	381	u32 ivor[64];
5cf8ca22	382	ulong ivpr;
ca95150b	383	u32 pvr;
49dd2c49 HB	384
49dd2c49 HB	385	u32 shadow_pid;
dd9ebf1f	386	u32 shadow_pid1;
bbf45ba5	387	u32 pid;
49dd2c49 HB	388	u32 swap_pid;
49dd2c49 HB	389
bbf45ba5 HB	390	u32 ccr0;
	391	u32 ccr1;
	392	u32 dbcr0;
	393	u32 dbcr1;
f7b200af	394	u32 dbsr;
bbf45ba5	395
de56a948	396	u64 mmcr[3];
9e368f29	397	u32 pmc[8];
de56a948	398
73e75b41	399	#ifdef CONFIG_KVM_EXIT_TIMING
09000adb	400	struct mutex exit_timing_lock;
7b701591 HB	401	struct kvmppc_exit_timing timing_exit;
7b701591 HB	402	struct kvmppc_exit_timing timing_last_enter;
73e75b41 HB	403	u32 last_exit_type;
	404	u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
	405	u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
	406	u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
	407	u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
	408	u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
	409	u64 timing_last_exit;
	410	struct dentry *debugfs_exit_timing;
	411	#endif
	412
de56a948 PM	413	#ifdef CONFIG_PPC_BOOK3S
	414	ulong fault_dar;
	415	u32 fault_dsisr;
	416	#endif
	417
0604675f	418	#ifdef CONFIG_BOOKE
5cf8ca22 HB	419	ulong fault_dear;
5cf8ca22 HB	420	ulong fault_esr;
daf5e271 LY	421	ulong queued_dear;
daf5e271 LY	422	ulong queued_esr;
0604675f	423	#endif
bbf45ba5 HB	424	gpa_t paddr_accessed;
	425
	426	u8 io_gpr; /* GPR used as IO source/target */
	427	u8 mmio_is_bigendian;
3587d534	428	u8 mmio_sign_extend;
bbf45ba5 HB	429	u8 dcr_needed;
bbf45ba5 HB	430	u8 dcr_is_write;
ad0a048b AG	431	u8 osi_needed;
ad0a048b AG	432	u8 osi_enabled;
9432ba60	433	u8 papr_enabled;
af8f38b3 AG	434	u8 sane;
af8f38b3 AG	435	u8 cpu_type;
de56a948	436	u8 hcall_needed;
bbf45ba5 HB	437
	438	u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
	439
544c6761 AG	440	struct hrtimer dec_timer;
544c6761 AG	441	struct tasklet_struct tasklet;
ca95150b	442	u64 dec_jiffies;
de56a948	443	u64 dec_expires;
bbf45ba5	444	unsigned long pending_exceptions;
de56a948	445	u16 last_cpu;
a8606e20 PM	446	u8 ceded;
a8606e20 PM	447	u8 prodded;
de56a948	448	u32 last_inst;
a8606e20 PM	449
	450	struct lppaca *vpa;
	451	struct slb_shadow *slb_shadow;
	452	struct dtl *dtl;
	453	struct dtl *dtl_end;
371fefd6	454
19ccb76a	455	wait_queue_head_t *wqp;
371fefd6 PM	456	struct kvmppc_vcore *vcore;
371fefd6 PM	457	int ret;
de56a948	458	int trap;
371fefd6 PM	459	int state;
371fefd6 PM	460	int ptid;
19ccb76a	461	bool timer_running;
371fefd6 PM	462	wait_queue_head_t cpu_run;
371fefd6 PM	463
96bc451a	464	struct kvm_vcpu_arch_shared *shared;
beb03f14 AG	465	unsigned long magic_page_pa; /* phys addr to map the magic page to */
beb03f14 AG	466	unsigned long magic_page_ea; /* effect. addr to map the magic page to */
de56a948 PM	467
	468	#ifdef CONFIG_KVM_BOOK3S_64_HV
	469	struct kvm_vcpu_arch_shared shregs;
371fefd6	470
697d3899 PM	471	unsigned long pgfault_addr;
	472	long pgfault_index;
	473	unsigned long pgfault_hpte[2];
	474
371fefd6 PM	475	struct list_head run_list;
	476	struct task_struct *run_task;
	477	struct kvm_run *kvm_run;
342d3db7	478	pgd_t *pgdir;
de56a948	479	#endif
bbf45ba5 HB	480	};
bbf45ba5 HB	481
19ccb76a PM	482	/* Values for vcpu->arch.state */
	483	#define KVMPPC_VCPU_STOPPED 0
	484	#define KVMPPC_VCPU_BUSY_IN_HOST 1
371fefd6 PM	485	#define KVMPPC_VCPU_RUNNABLE 2
371fefd6 PM	486
bbf45ba5	487	#endif /* __POWERPC_KVM_HOST_H__ */