/* * 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 */ #ifndef __POWERPC_KVM_HOST_H__ #define __POWERPC_KVM_HOST_H__ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define KVM_MAX_VCPUS NR_CPUS #define KVM_MAX_VCORES NR_CPUS #define KVM_USER_MEM_SLOTS 512 #include #define KVM_MAX_VCPU_ID (threads_per_subcore * KVM_MAX_VCORES) #ifdef CONFIG_KVM_MMIO #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 #endif #define KVM_HALT_POLL_NS_DEFAULT 500000 /* These values are internal and can be increased later */ #define KVM_NR_IRQCHIPS 1 #define KVM_IRQCHIP_NUM_PINS 256 /* PPC-specific vcpu->requests bit members */ #define KVM_REQ_WATCHDOG 8 #define KVM_REQ_EPR_EXIT 9 #include #define KVM_ARCH_WANT_MMU_NOTIFIER 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 start, unsigned long end); 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); static inline void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm, unsigned long address) { } #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_BITS_VPTE_64K 11 #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) #define HPTEG_HASH_NUM_VPTE_64K (1 << HPTEG_HASH_BITS_VPTE_64K) /* Physical Address Mask - allowed range of real mode RAM access */ #define KVM_PAM 0x0fffffffffffffffULL struct lppaca; struct slb_shadow; struct dtl_entry; struct kvmppc_vcpu_book3s; struct kvmppc_book3s_shadow_vcpu; struct kvm_vm_stat { u32 remote_tlb_flush; }; struct kvm_vcpu_stat { u32 sum_exits; u32 mmio_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_successful_poll; u32 halt_attempted_poll; u32 halt_wakeup; u32 dbell_exits; u32 gdbell_exits; u32 ld; u32 st; #ifdef CONFIG_PPC_BOOK3S u32 pf_storage; u32 pf_instruc; u32 sp_storage; u32 sp_instruc; u32 queue_intr; u32 ld_slow; u32 st_slow; #endif }; enum kvm_exit_types { MMIO_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, EMULATED_RFDI_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; struct rcu_head rcu; u32 page_shift; u64 offset; /* in pages */ u64 size; /* window size in pages */ struct page *pages[0]; }; /* XICS components, defined in book3s_xics.c */ struct kvmppc_xics; struct kvmppc_icp; /* * 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_CHG_SHIFT 48 #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_CHG_ORDER (0x3ful << KVMPPC_RMAP_CHG_SHIFT) #define KVMPPC_RMAP_PRESENT 0x100000000ul #define KVMPPC_RMAP_INDEX 0xfffffffful struct kvm_arch_memory_slot { #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE unsigned long *rmap; #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */ }; struct kvm_arch { unsigned int lpid; #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 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 vrma_slb_v; int hpte_setup_done; u32 hpt_order; atomic_t vcpus_running; u32 online_vcores; unsigned long hpt_npte; unsigned long hpt_mask; atomic_t hpte_mod_interest; cpumask_t need_tlb_flush; int hpt_cma_alloc; struct dentry *debugfs_dir; struct dentry *htab_dentry; #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */ #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE struct mutex hpt_mutex; #endif #ifdef CONFIG_PPC_BOOK3S_64 struct list_head spapr_tce_tables; struct list_head rtas_tokens; DECLARE_BITMAP(enabled_hcalls, MAX_HCALL_OPCODE/4 + 1); #endif #ifdef CONFIG_KVM_MPIC struct openpic *mpic; #endif #ifdef CONFIG_KVM_XICS struct kvmppc_xics *xics; #endif struct kvmppc_ops *kvm_ops; #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE /* This array can grow quite large, keep it at the end */ struct kvmppc_vcore *vcores[KVM_MAX_VCORES]; #endif }; /* * Struct for a virtual core. * Note: entry_exit_map combines a bitmap of threads that have entered * in the bottom 8 bits and a bitmap of threads that have exited in the * next 8 bits. This is so that we can atomically set the entry bit * iff the exit map is 0 without taking a lock. */ struct kvmppc_vcore { int n_runnable; int num_threads; int entry_exit_map; int napping_threads; int first_vcpuid; u16 pcpu; u16 last_cpu; u8 vcore_state; u8 in_guest; struct kvmppc_vcore *master_vcore; struct list_head runnable_threads; struct list_head preempt_list; spinlock_t lock; struct swait_queue_head wq; spinlock_t stoltb_lock; /* protects stolen_tb and preempt_tb */ u64 stolen_tb; u64 preempt_tb; struct kvm_vcpu *runner; struct kvm *kvm; u64 tb_offset; /* guest timebase - host timebase */ ulong lpcr; u32 arch_compat; ulong pcr; ulong dpdes; /* doorbell state (POWER8) */ ulong conferring_threads; }; #define VCORE_ENTRY_MAP(vc) ((vc)->entry_exit_map & 0xff) #define VCORE_EXIT_MAP(vc) ((vc)->entry_exit_map >> 8) #define VCORE_IS_EXITING(vc) (VCORE_EXIT_MAP(vc) != 0) /* This bit is used when a vcore exit is triggered from outside the vcore */ #define VCORE_EXIT_REQ 0x10000 /* * Values for vcore_state. * Note that these are arranged such that lower values * (< VCORE_SLEEPING) don't require stolen time accounting * on load/unload, and higher values do. */ #define VCORE_INACTIVE 0 #define VCORE_PREEMPT 1 #define VCORE_PIGGYBACK 2 #define VCORE_SLEEPING 3 #define VCORE_RUNNING 4 #define VCORE_EXITING 5 /* * 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 { unsigned long gpa; /* Current guest phys addr */ 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 */ bool dirty; /* true => area has been modified by kernel */ }; struct kvmppc_pte { ulong eaddr; u64 vpage; ulong raddr; bool may_read : 1; bool may_write : 1; bool may_execute : 1; u8 page_size; /* MMU_PAGE_xxx */ }; 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, bool iswrite); 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; u8 base_page_size; /* MMU_PAGE_xxx */ }; /* Struct used to accumulate timing information in HV real mode code */ struct kvmhv_tb_accumulator { u64 seqcount; /* used to synchronize access, also count * 2 */ u64 tb_total; /* total time in timebase ticks */ u64 tb_min; /* min time */ u64 tb_max; /* max time */ }; # 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 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */ #define KVMPPC_EPR_NONE 0 /* EPR not supported */ #define KVMPPC_EPR_USER 1 /* exit to userspace to fill EPR */ #define KVMPPC_EPR_KERNEL 2 /* in-kernel irqchip */ #define KVMPPC_IRQ_DEFAULT 0 #define KVMPPC_IRQ_MPIC 1 #define KVMPPC_IRQ_XICS 2 struct openpic; 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; struct kvmppc_vcpu_book3s *book3s; #endif #ifdef CONFIG_PPC_BOOK3S_32 struct kvmppc_book3s_shadow_vcpu *shadow_vcpu; #endif ulong gpr[32]; struct thread_fp_state fp; #ifdef CONFIG_SPE ulong evr[32]; ulong spefscr; ulong host_spefscr; u64 acc; #endif #ifdef CONFIG_ALTIVEC struct thread_vr_state vr; #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; #ifdef CONFIG_PPC_BOOK3S ulong tar; #endif ulong xer; u32 cr; #ifdef CONFIG_PPC_BOOK3S ulong hflags; ulong guest_owned_ext; ulong purr; ulong spurr; ulong ic; ulong vtb; ulong dscr; ulong amr; ulong uamor; ulong iamr; u32 ctrl; u32 dabrx; ulong dabr; ulong dawr; ulong dawrx; ulong ciabr; ulong cfar; ulong ppr; u32 pspb; ulong fscr; ulong shadow_fscr; ulong ebbhr; ulong ebbrr; ulong bescr; ulong csigr; ulong tacr; ulong tcscr; ulong acop; ulong wort; ulong shadow_srr1; #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 /* Time base value when we entered the guest */ u64 entry_tb; u64 entry_vtb; u64 entry_ic; 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[5]; u32 pmc[8]; u32 spmc[2]; u64 siar; u64 sdar; u64 sier; #ifdef CONFIG_PPC_TRANSACTIONAL_MEM u64 tfhar; u64 texasr; u64 tfiar; u32 cr_tm; u64 lr_tm; u64 ctr_tm; u64 amr_tm; u64 ppr_tm; u64 dscr_tm; u64 tar_tm; ulong gpr_tm[32]; struct thread_fp_state fp_tm; struct thread_vr_state vr_tm; u32 vrsave_tm; /* also USPRG0 */ #endif #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; unsigned long intr_msr; #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 tlbps[4]; u32 mmucfg; u32 eptcfg; u32 epr; u64 sprg9; u32 pwrmgtcr0; u32 crit_save; /* guest debug registers*/ struct debug_reg dbg_reg; #endif gpa_t paddr_accessed; gva_t vaddr_accessed; pgd_t *pgdir; u8 io_gpr; /* GPR used as IO source/target */ u8 mmio_host_swabbed; u8 mmio_sign_extend; u8 osi_needed; u8 osi_enabled; u8 papr_enabled; u8 watchdog_enabled; u8 sane; u8 cpu_type; u8 hcall_needed; u8 epr_flags; /* KVMPPC_EPR_xxx */ u8 epr_needed; u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */ struct hrtimer dec_timer; u64 dec_jiffies; u64 dec_expires; unsigned long pending_exceptions; u8 ceded; u8 prodded; u32 last_inst; struct swait_queue_head *wqp; struct kvmppc_vcore *vcore; int ret; int trap; int state; int ptid; int thread_cpu; bool timer_running; wait_queue_head_t cpu_run; struct kvm_vcpu_arch_shared *shared; #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) bool shared_big_endian; #endif 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 */ bool disable_kernel_nx; int irq_type; /* one of KVM_IRQ_* */ int irq_cpu_id; struct openpic *mpic; /* KVM_IRQ_MPIC */ #ifdef CONFIG_KVM_XICS struct kvmppc_icp *icp; /* XICS presentation controller */ #endif #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 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; 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; u32 emul_inst; #endif #ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING struct kvmhv_tb_accumulator *cur_activity; /* What we're timing */ u64 cur_tb_start; /* when it started */ struct kvmhv_tb_accumulator rm_entry; /* real-mode entry code */ struct kvmhv_tb_accumulator rm_intr; /* real-mode intr handling */ struct kvmhv_tb_accumulator rm_exit; /* real-mode exit code */ struct kvmhv_tb_accumulator guest_time; /* guest execution */ struct kvmhv_tb_accumulator cede_time; /* time napping inside guest */ struct dentry *debugfs_dir; struct dentry *debugfs_timings; #endif /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */ }; #define VCPU_FPR(vcpu, i) (vcpu)->arch.fp.fpr[i][TS_FPROFFSET] /* 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 #define __KVM_HAVE_CREATE_DEVICE static inline void kvm_arch_hardware_disable(void) {} static inline void kvm_arch_hardware_unsetup(void) {} static inline void kvm_arch_sync_events(struct kvm *kvm) {} static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {} static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} static inline void kvm_arch_exit(void) {} static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} #endif /* __POWERPC_KVM_HOST_H__ */