1ae1fae34SPekka Enberg #ifndef KVM__KVM_H 2ae1fae34SPekka Enberg #define KVM__KVM_H 3ae1fae34SPekka Enberg 4da8883c1SPekka Enberg #include "kvm/interrupt.h" 5da8883c1SPekka Enberg 6ae1fae34SPekka Enberg #include <stdbool.h> 73fdf659dSSasha Levin #include <linux/types.h> 8ce79f1caSPekka Enberg #include <time.h> 9ae1fae34SPekka Enberg 10ca99b3d3SCyrill Gorcunov #define KVM_NR_CPUS (255) 11874467f8SSasha Levin #define KVM_32BIT_GAP_SIZE (512 << 20) 12874467f8SSasha Levin #define KVM_32BIT_GAP_START ((1ULL << 32) - KVM_32BIT_GAP_SIZE) 13ca99b3d3SCyrill Gorcunov 14*49e5227dSSasha Levin #define SIGKVMEXIT (SIGUSR1 + 2) 15*49e5227dSSasha Levin 16ae1fae34SPekka Enberg struct kvm { 17ae1fae34SPekka Enberg int sys_fd; /* For system ioctls(), i.e. /dev/kvm */ 18ae1fae34SPekka Enberg int vm_fd; /* For VM ioctls() */ 19ce79f1caSPekka Enberg timer_t timerid; /* Posix timer for interrupts */ 20ae1fae34SPekka Enberg 210c7c14a7SCyrill Gorcunov int nrcpus; /* Number of cpus to run */ 220c7c14a7SCyrill Gorcunov 233fdf659dSSasha Levin u64 ram_size; 24ae1fae34SPekka Enberg void *ram_start; 25ae1fae34SPekka Enberg 262049569dSPekka Enberg bool nmi_disabled; 272049569dSPekka Enberg 283fdf659dSSasha Levin u16 boot_selector; 293fdf659dSSasha Levin u16 boot_ip; 303fdf659dSSasha Levin u16 boot_sp; 31edc8a14dSPekka Enberg 32da8883c1SPekka Enberg struct interrupt_table interrupt_table; 33b0b42ba0SPekka Enberg 34b0b42ba0SPekka Enberg const char *vmlinux; 35ae1fae34SPekka Enberg }; 36ae1fae34SPekka Enberg 37192a99d1SCyrill Gorcunov struct kvm *kvm__init(const char *kvm_dev, unsigned long ram_size); 3843835ac9SSasha Levin int kvm__max_cpus(struct kvm *kvm); 3943835ac9SSasha Levin void kvm__init_ram(struct kvm *kvm); 4043835ac9SSasha Levin void kvm__delete(struct kvm *kvm); 412065a6f7SCyrill Gorcunov bool kvm__load_kernel(struct kvm *kvm, const char *kernel_filename, 422065a6f7SCyrill Gorcunov const char *initrd_filename, const char *kernel_cmdline); 4343835ac9SSasha Levin void kvm__setup_bios(struct kvm *kvm); 4443835ac9SSasha Levin void kvm__start_timer(struct kvm *kvm); 4543835ac9SSasha Levin void kvm__stop_timer(struct kvm *kvm); 4643835ac9SSasha Levin void kvm__irq_line(struct kvm *kvm, int irq, int level); 4743835ac9SSasha Levin bool kvm__emulate_io(struct kvm *kvm, u16 port, void *data, int direction, int size, u32 count); 4843835ac9SSasha Levin bool kvm__emulate_mmio(struct kvm *kvm, u64 phys_addr, u8 *data, u32 len, u8 is_write); 496b1994caSSasha Levin bool kvm__register_mmio(u64 phys_addr, u64 phys_addr_len, void (*kvm_mmio_callback_fn)(u64 addr, u8 *data, u32 len, u8 is_write)); 506b1994caSSasha Levin bool kvm__deregister_mmio(u64 phys_addr); 51ae1fae34SPekka Enberg 52ae1fae34SPekka Enberg /* 53ae1fae34SPekka Enberg * Debugging 54ae1fae34SPekka Enberg */ 5543835ac9SSasha Levin void kvm__dump_mem(struct kvm *kvm, unsigned long addr, unsigned long size); 56ae1fae34SPekka Enberg 57ae1fae34SPekka Enberg extern const char *kvm_exit_reasons[]; 58ae1fae34SPekka Enberg 5943835ac9SSasha Levin static inline bool host_ptr_in_ram(struct kvm *kvm, void *p) 609292f776SCyrill Gorcunov { 6143835ac9SSasha Levin return kvm->ram_start <= p && p < (kvm->ram_start + kvm->ram_size); 629292f776SCyrill Gorcunov } 639292f776SCyrill Gorcunov 643fdf659dSSasha Levin static inline u32 segment_to_flat(u16 selector, u16 offset) 659292f776SCyrill Gorcunov { 663fdf659dSSasha Levin return ((u32)selector << 4) + (u32) offset; 679292f776SCyrill Gorcunov } 689292f776SCyrill Gorcunov 6943835ac9SSasha Levin static inline void *guest_flat_to_host(struct kvm *kvm, unsigned long offset) 709292f776SCyrill Gorcunov { 7143835ac9SSasha Levin return kvm->ram_start + offset; 729292f776SCyrill Gorcunov } 739292f776SCyrill Gorcunov 7443835ac9SSasha Levin static inline void *guest_real_to_host(struct kvm *kvm, u16 selector, u16 offset) 759292f776SCyrill Gorcunov { 769292f776SCyrill Gorcunov unsigned long flat = segment_to_flat(selector, offset); 779292f776SCyrill Gorcunov 7843835ac9SSasha Levin return guest_flat_to_host(kvm, flat); 799292f776SCyrill Gorcunov } 809292f776SCyrill Gorcunov 81ae1fae34SPekka Enberg #endif /* KVM__KVM_H */ 82