[deliverable/linux.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>
#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

#if !defined(CONFIG_KVM_440)
#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_unmap_hva_range(struct kvm *kvm,
			       unsigned long start, unsigned long end);
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->arch.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 memslot->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 {
#ifdef CONFIG_KVM_BOOK3S_64_HV
	unsigned long *rmap;
	unsigned long *slot_phys;
#endif /* CONFIG_KVM_BOOK3S_64_HV */
};

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;
	u32 online_vcores;
	unsigned long hpt_npte;
	unsigned long hpt_mask;
	atomic_t hpte_mod_interest;
	spinlock_t slot_phys_lock;
	cpumask_t need_tlb_flush;
	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;
	u16 last_cpu;
	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_SLEEPING	1
#define VCORE_STARTING	2
#define VCORE_RUNNING	3
#define VCORE_EXITING	4

/*
 * 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;
};

# ifdef CONFIG_PPC_FSL_BOOK3E
#define KVMPPC_BOOKE_IAC_NUM	2
#define KVMPPC_BOOKE_DAC_NUM	2
# else
#define KVMPPC_BOOKE_IAC_NUM	4
#define KVMPPC_BOOKE_DAC_NUM	2
# endif
#define KVMPPC_BOOKE_MAX_IAC	4
#define KVMPPC_BOOKE_MAX_DAC	2

struct kvmppc_booke_debug_reg {
	u32 dbcr0;
	u32 dbcr1;
	u32 dbcr2;
#ifdef CONFIG_KVM_E500MC
	u32 dbcr4;
#endif
	u64 iac[KVMPPC_BOOKE_MAX_IAC];
	u64 dac[KVMPPC_BOOKE_MAX_DAC];
};

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 shadow_msrp;
	u32 eplc;
	u32 epsc;
	u32 oldpir;
#endif

#if defined(CONFIG_BOOKE)
#if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
	u32 epcr;
#endif
#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 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;
	spinlock_t wdt_lock;
	struct timer_list wdt_timer;
	u32 tlbcfg[4];
	u32 mmucfg;
	u32 epr;
	struct kvmppc_booke_debug_reg dbg_reg;
#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 watchdog_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;
	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;

	spinlock_t tbacct_lock;
	u64 busy_stolen;
	u64 busy_preempt;
#endif
};

/* Values for vcpu->arch.state */
#define KVMPPC_VCPU_NOTREADY		0
#define KVMPPC_VCPU_RUNNABLE		1
#define KVMPPC_VCPU_BUSY_IN_HOST	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__ */
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>
249ba1ee	36	#include <asm/cacheflush.h>
bbf45ba5	37
371fefd6 PM	38	#define KVM_MAX_VCPUS NR_CPUS
371fefd6 PM	39	#define KVM_MAX_VCORES NR_CPUS
bbf45ba5 HB	40	#define KVM_MEMORY_SLOTS 32
	41	/* memory slots that does not exposed to userspace */
	42	#define KVM_PRIVATE_MEM_SLOTS 4
b2b2f165	43	#define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)
bbf45ba5	44
de56a948	45	#ifdef CONFIG_KVM_MMIO
588968b6	46	#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
de56a948	47	#endif
588968b6	48
9b0cb3c8	49	#if !defined(CONFIG_KVM_440)
342d3db7 PM	50	#include <linux/mmu_notifier.h>
	51
	52	#define KVM_ARCH_WANT_MMU_NOTIFIER
	53
	54	struct kvm;
	55	extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
b3ae2096 TY	56	extern int kvm_unmap_hva_range(struct kvm *kvm,
b3ae2096 TY	57	unsigned long start, unsigned long end);
342d3db7 PM	58	extern int kvm_age_hva(struct kvm *kvm, unsigned long hva);
	59	extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
	60	extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
	61
	62	#endif
	63
bbf45ba5	64	/* We don't currently support large pages. */
82855413	65	#define KVM_HPAGE_GFN_SHIFT(x) 0
ec04b260 JR	66	#define KVM_NR_PAGE_SIZES 1
ec04b260 JR	67	#define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
bbf45ba5	68
fef093be AG	69	#define HPTEG_CACHE_NUM (1 << 15)
fef093be AG	70	#define HPTEG_HASH_BITS_PTE 13
2d27fc5e	71	#define HPTEG_HASH_BITS_PTE_LONG 12
fef093be AG	72	#define HPTEG_HASH_BITS_VPTE 13
	73	#define HPTEG_HASH_BITS_VPTE_LONG 5
	74	#define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
2d27fc5e	75	#define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
fef093be AG	76	#define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
fef093be AG	77	#define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
ca95150b	78
28e83b4f AG	79	/* Physical Address Mask - allowed range of real mode RAM access */
	80	#define KVM_PAM 0x0fffffffffffffffULL
	81
bbf45ba5 HB	82	struct kvm;
	83	struct kvm_run;
	84	struct kvm_vcpu;
	85
a8606e20 PM	86	struct lppaca;
a8606e20 PM	87	struct slb_shadow;
2e25aa5f	88	struct dtl_entry;
a8606e20	89
bbf45ba5 HB	90	struct kvm_vm_stat {
	91	u32 remote_tlb_flush;
	92	};
	93
	94	struct kvm_vcpu_stat {
	95	u32 sum_exits;
	96	u32 mmio_exits;
	97	u32 dcr_exits;
	98	u32 signal_exits;
	99	u32 light_exits;
	100	/* Account for special types of light exits: */
	101	u32 itlb_real_miss_exits;
	102	u32 itlb_virt_miss_exits;
	103	u32 dtlb_real_miss_exits;
	104	u32 dtlb_virt_miss_exits;
	105	u32 syscall_exits;
	106	u32 isi_exits;
	107	u32 dsi_exits;
	108	u32 emulated_inst_exits;
	109	u32 dec_exits;
	110	u32 ext_intr_exits;
45c5eb67	111	u32 halt_wakeup;
d30f6e48 SW	112	u32 dbell_exits;
d30f6e48 SW	113	u32 gdbell_exits;
00c3a37c	114	#ifdef CONFIG_PPC_BOOK3S
ca95150b AG	115	u32 pf_storage;
	116	u32 pf_instruc;
	117	u32 sp_storage;
	118	u32 sp_instruc;
	119	u32 queue_intr;
	120	u32 ld;
	121	u32 ld_slow;
	122	u32 st;
	123	u32 st_slow;
	124	#endif
bbf45ba5 HB	125	};
bbf45ba5 HB	126
73e75b41 HB	127	enum kvm_exit_types {
	128	MMIO_EXITS,
	129	DCR_EXITS,
	130	SIGNAL_EXITS,
	131	ITLB_REAL_MISS_EXITS,
	132	ITLB_VIRT_MISS_EXITS,
	133	DTLB_REAL_MISS_EXITS,
	134	DTLB_VIRT_MISS_EXITS,
	135	SYSCALL_EXITS,
	136	ISI_EXITS,
	137	DSI_EXITS,
	138	EMULATED_INST_EXITS,
	139	EMULATED_MTMSRWE_EXITS,
	140	EMULATED_WRTEE_EXITS,
	141	EMULATED_MTSPR_EXITS,
	142	EMULATED_MFSPR_EXITS,
	143	EMULATED_MTMSR_EXITS,
	144	EMULATED_MFMSR_EXITS,
	145	EMULATED_TLBSX_EXITS,
	146	EMULATED_TLBWE_EXITS,
	147	EMULATED_RFI_EXITS,
d30f6e48	148	EMULATED_RFCI_EXITS,
73e75b41 HB	149	DEC_EXITS,
	150	EXT_INTR_EXITS,
	151	HALT_WAKEUP,
	152	USR_PR_INST,
	153	FP_UNAVAIL,
	154	DEBUG_EXITS,
	155	TIMEINGUEST,
d30f6e48 SW	156	DBELL_EXITS,
d30f6e48 SW	157	GDBELL_EXITS,
73e75b41 HB	158	__NUMBER_OF_KVM_EXIT_TYPES
	159	};
	160
73e75b41	161	/* allow access to big endian 32bit upper/lower parts and 64bit var */
7b701591	162	struct kvmppc_exit_timing {
73e75b41 HB	163	union {
	164	u64 tv64;
	165	struct {
	166	u32 tbu, tbl;
	167	} tv32;
	168	};
	169	};
73e75b41	170
de56a948 PM	171	struct kvmppc_pginfo {
	172	unsigned long pfn;
	173	atomic_t refcnt;
	174	};
	175
54738c09 DG	176	struct kvmppc_spapr_tce_table {
	177	struct list_head list;
	178	struct kvm *kvm;
	179	u64 liobn;
	180	u32 window_size;
	181	struct page *pages[0];
	182	};
	183
b4e70611	184	struct kvmppc_linear_info {
aa04b4cc PM	185	void *base_virt;
	186	unsigned long base_pfn;
	187	unsigned long npages;
	188	struct list_head list;
b4e70611 AG	189	atomic_t use_count;
b4e70611 AG	190	int type;
aa04b4cc PM	191	};
aa04b4cc PM	192
8936dda4 PM	193	/*
	194	* The reverse mapping array has one entry for each HPTE,
	195	* which stores the guest's view of the second word of the HPTE
06ce2c63 PM	196	* (including the guest physical address of the mapping),
	197	* plus forward and backward pointers in a doubly-linked ring
	198	* of HPTEs that map the same host page. The pointers in this
	199	* ring are 32-bit HPTE indexes, to save space.
8936dda4 PM	200	*/
	201	struct revmap_entry {
	202	unsigned long guest_rpte;
06ce2c63	203	unsigned int forw, back;
8936dda4 PM	204	};
8936dda4 PM	205
06ce2c63	206	/*
a66b48c3	207	* We use the top bit of each memslot->arch.rmap entry as a lock bit,
06ce2c63 PM	208	* and bit 32 as a present flag. The bottom 32 bits are the
	209	* index in the guest HPT of a HPTE that points to the page.
	210	*/
	211	#define KVMPPC_RMAP_LOCK_BIT 63
bad3b507 PM	212	#define KVMPPC_RMAP_RC_SHIFT 32
	213	#define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
	214	#define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
06ce2c63 PM	215	#define KVMPPC_RMAP_PRESENT 0x100000000ul
	216	#define KVMPPC_RMAP_INDEX 0xfffffffful
	217
a66b48c3	218	/* Low-order bits in memslot->arch.slot_phys[] */
da9d1d7f	219	#define KVMPPC_PAGE_ORDER_MASK 0x1f
9d0ef5ea PM	220	#define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
9d0ef5ea PM	221	#define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
b2b2f165 PM	222	#define KVMPPC_GOT_PAGE 0x80
b2b2f165 PM	223
db3fe4eb	224	struct kvm_arch_memory_slot {
a66b48c3	225	#ifdef CONFIG_KVM_BOOK3S_64_HV
d89cc617	226	unsigned long *rmap;
a66b48c3 PM	227	unsigned long *slot_phys;
a66b48c3 PM	228	#endif /* CONFIG_KVM_BOOK3S_64_HV */
db3fe4eb TY	229	};
db3fe4eb TY	230
bbf45ba5	231	struct kvm_arch {
d30f6e48	232	unsigned int lpid;
de56a948 PM	233	#ifdef CONFIG_KVM_BOOK3S_64_HV
de56a948 PM	234	unsigned long hpt_virt;
8936dda4	235	struct revmap_entry *revmap;
de56a948 PM	236	unsigned int host_lpid;
	237	unsigned long host_lpcr;
	238	unsigned long sdr1;
	239	unsigned long host_sdr1;
	240	int tlbie_lock;
aa04b4cc PM	241	unsigned long lpcr;
aa04b4cc PM	242	unsigned long rmor;
b4e70611	243	struct kvmppc_linear_info *rma;
697d3899	244	unsigned long vrma_slb_v;
c77162de	245	int rma_setup_done;
342d3db7	246	int using_mmu_notifiers;
32fad281 PM	247	u32 hpt_order;
32fad281 PM	248	atomic_t vcpus_running;
1b400ba0	249	u32 online_vcores;
32fad281 PM	250	unsigned long hpt_npte;
32fad281 PM	251	unsigned long hpt_mask;
44e5f6be	252	atomic_t hpte_mod_interest;
c77162de	253	spinlock_t slot_phys_lock;
1b400ba0	254	cpumask_t need_tlb_flush;
371fefd6	255	struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
d2a1b483	256	struct kvmppc_linear_info *hpt_li;
de56a948	257	#endif /* CONFIG_KVM_BOOK3S_64_HV */
f31e65e1 BH	258	#ifdef CONFIG_PPC_BOOK3S_64
	259	struct list_head spapr_tce_tables;
	260	#endif
bbf45ba5 HB	261	};
bbf45ba5 HB	262
371fefd6 PM	263	/*
	264	* Struct for a virtual core.
	265	* Note: entry_exit_count combines an entry count in the bottom 8 bits
	266	* and an exit count in the next 8 bits. This is so that we can
	267	* atomically increment the entry count iff the exit count is 0
	268	* without taking the lock.
	269	*/
	270	struct kvmppc_vcore {
	271	int n_runnable;
19ccb76a	272	int n_busy;
371fefd6 PM	273	int num_threads;
	274	int entry_exit_count;
	275	int n_woken;
	276	int nap_count;
19ccb76a	277	int napping_threads;
371fefd6	278	u16 pcpu;
1b400ba0	279	u16 last_cpu;
19ccb76a	280	u8 vcore_state;
371fefd6 PM	281	u8 in_guest;
	282	struct list_head runnable_threads;
	283	spinlock_t lock;
19ccb76a	284	wait_queue_head_t wq;
0456ec4f PM	285	u64 stolen_tb;
	286	u64 preempt_tb;
	287	struct kvm_vcpu *runner;
371fefd6 PM	288	};
	289
	290	#define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
	291	#define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
	292
19ccb76a PM	293	/* Values for vcore_state */
19ccb76a PM	294	#define VCORE_INACTIVE 0
2f12f034 PM	295	#define VCORE_SLEEPING 1
	296	#define VCORE_STARTING 2
	297	#define VCORE_RUNNING 3
	298	#define VCORE_EXITING 4
19ccb76a	299
2e25aa5f PM	300	/*
	301	* Struct used to manage memory for a virtual processor area
	302	* registered by a PAPR guest. There are three types of area
	303	* that a guest can register.
	304	*/
	305	struct kvmppc_vpa {
	306	void pinned_addr; / Address in kernel linear mapping */
	307	void pinned_end; / End of region */
	308	unsigned long next_gpa; /* Guest phys addr for update */
	309	unsigned long len; /* Number of bytes required */
	310	u8 update_pending; /* 1 => update pinned_addr from next_gpa */
	311	};
	312
ca95150b	313	struct kvmppc_pte {
af7b4d10	314	ulong eaddr;
ca95150b	315	u64 vpage;
af7b4d10	316	ulong raddr;
3ed9c6d2 AG	317	bool may_read : 1;
	318	bool may_write : 1;
	319	bool may_execute : 1;
ca95150b AG	320	};
	321
	322	struct kvmppc_mmu {
	323	/* book3s_64 only */
	324	void (slbmte)(struct kvm_vcpu vcpu, u64 rb, u64 rs);
	325	u64 (slbmfee)(struct kvm_vcpu vcpu, u64 slb_nr);
	326	u64 (slbmfev)(struct kvm_vcpu vcpu, u64 slb_nr);
	327	void (slbie)(struct kvm_vcpu vcpu, u64 slb_nr);
	328	void (slbia)(struct kvm_vcpu vcpu);
	329	/* book3s */
	330	void (mtsrin)(struct kvm_vcpu vcpu, u32 srnum, ulong value);
	331	u32 (mfsrin)(struct kvm_vcpu vcpu, u32 srnum);
	332	int (xlate)(struct kvm_vcpu vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
	333	void (reset_msr)(struct kvm_vcpu vcpu);
	334	void (tlbie)(struct kvm_vcpu vcpu, ulong addr, bool large);
af7b4d10	335	int (esid_to_vsid)(struct kvm_vcpu vcpu, ulong esid, u64 *vsid);
ca95150b AG	336	u64 (ea_to_vp)(struct kvm_vcpu vcpu, gva_t eaddr, bool data);
	337	bool (is_dcbz32)(struct kvm_vcpu vcpu);
	338	};
	339
c4befc58 PM	340	struct kvmppc_slb {
	341	u64 esid;
	342	u64 vsid;
	343	u64 orige;
	344	u64 origv;
	345	bool valid : 1;
	346	bool Ks : 1;
	347	bool Kp : 1;
	348	bool nx : 1;
	349	bool large : 1; /* PTEs are 16MB */
	350	bool tb : 1; /* 1TB segment */
	351	bool class : 1;
ca95150b AG	352	};
ca95150b AG	353
6df8d3fc BB	354	# ifdef CONFIG_PPC_FSL_BOOK3E
	355	#define KVMPPC_BOOKE_IAC_NUM 2
	356	#define KVMPPC_BOOKE_DAC_NUM 2
	357	# else
	358	#define KVMPPC_BOOKE_IAC_NUM 4
	359	#define KVMPPC_BOOKE_DAC_NUM 2
	360	# endif
	361	#define KVMPPC_BOOKE_MAX_IAC 4
	362	#define KVMPPC_BOOKE_MAX_DAC 2
	363
	364	struct kvmppc_booke_debug_reg {
	365	u32 dbcr0;
	366	u32 dbcr1;
	367	u32 dbcr2;
	368	#ifdef CONFIG_KVM_E500MC
	369	u32 dbcr4;
	370	#endif
	371	u64 iac[KVMPPC_BOOKE_MAX_IAC];
	372	u64 dac[KVMPPC_BOOKE_MAX_DAC];
	373	};
	374
bbf45ba5	375	struct kvm_vcpu_arch {
ca95150b	376	ulong host_stack;
bbf45ba5	377	u32 host_pid;
00c3a37c	378	#ifdef CONFIG_PPC_BOOK3S
c4befc58	379	struct kvmppc_slb slb[64];
de56a948	380	int slb_max; /* 1 + index of last valid entry in slb[] */
c4befc58	381	int slb_nr; /* total number of entries in SLB */
ca95150b AG	382	struct kvmppc_mmu mmu;
ca95150b AG	383	#endif
bbf45ba5	384
5cf8ca22	385	ulong gpr[32];
bbf45ba5	386
180a34d2	387	u64 fpr[32];
c62e096d	388	u64 fpscr;
180a34d2	389
4cd35f67 SW	390	#ifdef CONFIG_SPE
	391	ulong evr[32];
	392	ulong spefscr;
	393	ulong host_spefscr;
	394	u64 acc;
	395	#endif
180a34d2 AG	396	#ifdef CONFIG_ALTIVEC
	397	vector128 vr[32];
	398	vector128 vscr;
	399	#endif
	400
	401	#ifdef CONFIG_VSX
de56a948	402	u64 vsr[64];
180a34d2 AG	403	#endif
180a34d2 AG	404
d30f6e48 SW	405	#ifdef CONFIG_KVM_BOOKE_HV
	406	u32 host_mas4;
	407	u32 host_mas6;
	408	u32 shadow_epcr;
d30f6e48 SW	409	u32 shadow_msrp;
	410	u32 eplc;
	411	u32 epsc;
	412	u32 oldpir;
	413	#endif
	414
62b4db00 AG	415	#if defined(CONFIG_BOOKE)
	416	#if defined(CONFIG_KVM_BOOKE_HV) \|\| defined(CONFIG_64BIT)
	417	u32 epcr;
	418	#endif
	419	#endif
	420
5aa9e2f4 AG	421	#ifdef CONFIG_PPC_BOOK3S
	422	/* For Gekko paired singles */
	423	u32 qpr[32];
	424	#endif
	425
5cf8ca22	426	ulong pc;
5cf8ca22 HB	427	ulong ctr;
5cf8ca22 HB	428	ulong lr;
7e57cba0	429
5cf8ca22	430	ulong xer;
7e57cba0	431	u32 cr;
bbf45ba5	432
00c3a37c	433	#ifdef CONFIG_PPC_BOOK3S
ca95150b	434	ulong hflags;
180a34d2	435	ulong guest_owned_ext;
de56a948 PM	436	ulong purr;
de56a948 PM	437	ulong spurr;
de56a948 PM	438	ulong dscr;
	439	ulong amr;
	440	ulong uamor;
	441	u32 ctrl;
	442	ulong dabr;
ca95150b	443	#endif
eab17672	444	u32 vrsave; /* also USPRG0 */
bbf45ba5	445	u32 mmucr;
5fd8505e	446	/* shadow_msr is unused for BookE HV */
ecee273f	447	ulong shadow_msr;
5cf8ca22 HB	448	ulong csrr0;
	449	ulong csrr1;
	450	ulong dsrr0;
	451	ulong dsrr1;
5ce941ee SW	452	ulong mcsrr0;
	453	ulong mcsrr1;
	454	ulong mcsr;
bbf45ba5	455	u32 dec;
21bd000a	456	#ifdef CONFIG_BOOKE
bbf45ba5	457	u32 decar;
21bd000a	458	#endif
bbf45ba5 HB	459	u32 tbl;
	460	u32 tbu;
	461	u32 tcr;
dfd4d47e	462	ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
bb3a8a17	463	u32 ivor[64];
5cf8ca22	464	ulong ivpr;
ca95150b	465	u32 pvr;
49dd2c49 HB	466
49dd2c49 HB	467	u32 shadow_pid;
dd9ebf1f	468	u32 shadow_pid1;
bbf45ba5	469	u32 pid;
49dd2c49 HB	470	u32 swap_pid;
49dd2c49 HB	471
bbf45ba5 HB	472	u32 ccr0;
bbf45ba5 HB	473	u32 ccr1;
f7b200af	474	u32 dbsr;
bbf45ba5	475
de56a948	476	u64 mmcr[3];
9e368f29	477	u32 pmc[8];
de56a948	478
73e75b41	479	#ifdef CONFIG_KVM_EXIT_TIMING
09000adb	480	struct mutex exit_timing_lock;
7b701591 HB	481	struct kvmppc_exit_timing timing_exit;
7b701591 HB	482	struct kvmppc_exit_timing timing_last_enter;
73e75b41 HB	483	u32 last_exit_type;
	484	u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
	485	u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
	486	u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
	487	u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
	488	u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
	489	u64 timing_last_exit;
	490	struct dentry *debugfs_exit_timing;
	491	#endif
	492
de56a948 PM	493	#ifdef CONFIG_PPC_BOOK3S
	494	ulong fault_dar;
	495	u32 fault_dsisr;
	496	#endif
	497
0604675f	498	#ifdef CONFIG_BOOKE
5cf8ca22 HB	499	ulong fault_dear;
5cf8ca22 HB	500	ulong fault_esr;
daf5e271 LY	501	ulong queued_dear;
daf5e271 LY	502	ulong queued_esr;
f61c94bb BB	503	spinlock_t wdt_lock;
f61c94bb BB	504	struct timer_list wdt_timer;
8fdd21a2 SW	505	u32 tlbcfg[4];
8fdd21a2 SW	506	u32 mmucfg;
d30f6e48	507	u32 epr;
6df8d3fc	508	struct kvmppc_booke_debug_reg dbg_reg;
0604675f	509	#endif
bbf45ba5	510	gpa_t paddr_accessed;
6020c0f6	511	gva_t vaddr_accessed;
bbf45ba5 HB	512
	513	u8 io_gpr; /* GPR used as IO source/target */
	514	u8 mmio_is_bigendian;
3587d534	515	u8 mmio_sign_extend;
bbf45ba5 HB	516	u8 dcr_needed;
bbf45ba5 HB	517	u8 dcr_is_write;
ad0a048b AG	518	u8 osi_needed;
ad0a048b AG	519	u8 osi_enabled;
9432ba60	520	u8 papr_enabled;
f61c94bb	521	u8 watchdog_enabled;
af8f38b3 AG	522	u8 sane;
af8f38b3 AG	523	u8 cpu_type;
de56a948	524	u8 hcall_needed;
bbf45ba5 HB	525
	526	u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
	527
544c6761 AG	528	struct hrtimer dec_timer;
544c6761 AG	529	struct tasklet_struct tasklet;
ca95150b	530	u64 dec_jiffies;
de56a948	531	u64 dec_expires;
bbf45ba5	532	unsigned long pending_exceptions;
a8606e20 PM	533	u8 ceded;
a8606e20 PM	534	u8 prodded;
de56a948	535	u32 last_inst;
a8606e20	536
19ccb76a	537	wait_queue_head_t *wqp;
371fefd6 PM	538	struct kvmppc_vcore *vcore;
371fefd6 PM	539	int ret;
de56a948	540	int trap;
371fefd6 PM	541	int state;
371fefd6 PM	542	int ptid;
19ccb76a	543	bool timer_running;
371fefd6 PM	544	wait_queue_head_t cpu_run;
371fefd6 PM	545
96bc451a	546	struct kvm_vcpu_arch_shared *shared;
beb03f14 AG	547	unsigned long magic_page_pa; /* phys addr to map the magic page to */
beb03f14 AG	548	unsigned long magic_page_ea; /* effect. addr to map the magic page to */
de56a948 PM	549
	550	#ifdef CONFIG_KVM_BOOK3S_64_HV
	551	struct kvm_vcpu_arch_shared shregs;
371fefd6	552
697d3899 PM	553	unsigned long pgfault_addr;
	554	long pgfault_index;
	555	unsigned long pgfault_hpte[2];
	556
371fefd6 PM	557	struct list_head run_list;
	558	struct task_struct *run_task;
	559	struct kvm_run *kvm_run;
342d3db7	560	pgd_t *pgdir;
2e25aa5f PM	561
	562	spinlock_t vpa_update_lock;
	563	struct kvmppc_vpa vpa;
	564	struct kvmppc_vpa dtl;
	565	struct dtl_entry *dtl_ptr;
	566	unsigned long dtl_index;
0456ec4f	567	u64 stolen_logged;
2e25aa5f	568	struct kvmppc_vpa slb_shadow;
c7b67670 PM	569
	570	spinlock_t tbacct_lock;
	571	u64 busy_stolen;
	572	u64 busy_preempt;
de56a948	573	#endif
bbf45ba5 HB	574	};
bbf45ba5 HB	575
19ccb76a	576	/* Values for vcpu->arch.state */
8455d79e PM	577	#define KVMPPC_VCPU_NOTREADY 0
8455d79e PM	578	#define KVMPPC_VCPU_RUNNABLE 1
c7b67670	579	#define KVMPPC_VCPU_BUSY_IN_HOST 2
371fefd6	580
b3c5d3c2 AG	581	/* Values for vcpu->arch.io_gpr */
	582	#define KVM_MMIO_REG_MASK 0x001f
	583	#define KVM_MMIO_REG_EXT_MASK 0xffe0
	584	#define KVM_MMIO_REG_GPR 0x0000
	585	#define KVM_MMIO_REG_FPR 0x0020
	586	#define KVM_MMIO_REG_QPR 0x0040
	587	#define KVM_MMIO_REG_FQPR 0x0060
	588
2246f8b5	589	#define __KVM_HAVE_ARCH_WQP
b6d33834	590
bbf45ba5	591	#endif /* __POWERPC_KVM_HOST_H__ */