| /* |
| * 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_USER_MEM_SLOTS 32 |
| #define KVM_MEM_SLOTS_NUM KVM_USER_MEM_SLOTS |
| |
| #ifdef CONFIG_KVM_MMIO |
| #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 |
| #endif |
| |
| /* These values are internal and can be increased later */ |
| #define KVM_NR_IRQCHIPS 1 |
| #define KVM_IRQCHIP_NUM_PINS 256 |
| |
| #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 |
| |
| #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 kvm; |
| struct kvm_run; |
| struct kvm_vcpu; |
| |
| 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 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 kvm_rma_info { |
| atomic_t use_count; |
| unsigned long base_pfn; |
| }; |
| |
| /* 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_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_HV_POSSIBLE |
| unsigned long *rmap; |
| unsigned long *slot_phys; |
| #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 rmor; |
| struct kvm_rma_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]; |
| int hpt_cma_alloc; |
| #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; |
| #endif |
| #ifdef CONFIG_KVM_MPIC |
| struct openpic *mpic; |
| #endif |
| #ifdef CONFIG_KVM_XICS |
| struct kvmppc_xics *xics; |
| #endif |
| struct kvmppc_ops *kvm_ops; |
| }; |
| |
| /* |
| * 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; |
| u64 tb_offset; /* guest timebase - host timebase */ |
| ulong lpcr; |
| u32 arch_compat; |
| ulong pcr; |
| }; |
| |
| #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 { |
| 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 */ |
| }; |
| |
| # 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]; |
| |
| 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; |
| ulong cfar; |
| ulong ppr; |
| 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 |
| 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]; |
| u64 siar; |
| u64 sdar; |
| |
| #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 tlbps[4]; |
| u32 mmucfg; |
| u32 eptcfg; |
| u32 epr; |
| u32 crit_save; |
| /* guest debug registers*/ |
| struct debug_reg dbg_reg; |
| /* hardware visible debug registers when in guest state */ |
| struct debug_reg shadow_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; |
| u8 epr_flags; /* KVMPPC_EPR_xxx */ |
| u8 epr_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 */ |
| |
| 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; |
| 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 |
| #define __KVM_HAVE_CREATE_DEVICE |
| |
| #endif /* __POWERPC_KVM_HOST_H__ */ |