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) 11*874467f8SSasha Levin #define KVM_32BIT_GAP_SIZE (512 << 20) 12*874467f8SSasha Levin #define KVM_32BIT_GAP_START ((1ULL << 32) - KVM_32BIT_GAP_SIZE) 13ca99b3d3SCyrill Gorcunov 14ae1fae34SPekka Enberg struct kvm { 15ae1fae34SPekka Enberg int sys_fd; /* For system ioctls(), i.e. /dev/kvm */ 16ae1fae34SPekka Enberg int vm_fd; /* For VM ioctls() */ 17ce79f1caSPekka Enberg timer_t timerid; /* Posix timer for interrupts */ 18ae1fae34SPekka Enberg 190c7c14a7SCyrill Gorcunov int nrcpus; /* Number of cpus to run */ 200c7c14a7SCyrill Gorcunov 213fdf659dSSasha Levin u64 ram_size; 22ae1fae34SPekka Enberg void *ram_start; 23ae1fae34SPekka Enberg 242049569dSPekka Enberg bool nmi_disabled; 252049569dSPekka Enberg 263fdf659dSSasha Levin u16 boot_selector; 273fdf659dSSasha Levin u16 boot_ip; 283fdf659dSSasha Levin u16 boot_sp; 29edc8a14dSPekka Enberg 30da8883c1SPekka Enberg struct interrupt_table interrupt_table; 31ae1fae34SPekka Enberg }; 32ae1fae34SPekka Enberg 33192a99d1SCyrill Gorcunov struct kvm *kvm__init(const char *kvm_dev, unsigned long ram_size); 34384922b3SPekka Enberg int kvm__max_cpus(struct kvm *self); 35839051d9SSasha Levin void kvm__init_ram(struct kvm *self); 369ef4c68eSPekka Enberg void kvm__delete(struct kvm *self); 372065a6f7SCyrill Gorcunov bool kvm__load_kernel(struct kvm *kvm, const char *kernel_filename, 382065a6f7SCyrill Gorcunov const char *initrd_filename, const char *kernel_cmdline); 39b3594ec7SCyrill Gorcunov void kvm__setup_bios(struct kvm *self); 40ce79f1caSPekka Enberg void kvm__start_timer(struct kvm *self); 41fbfe68b7SSasha Levin void kvm__stop_timer(struct kvm *self); 428b1ff07eSPekka Enberg void kvm__irq_line(struct kvm *self, int irq, int level); 433fdf659dSSasha Levin bool kvm__emulate_io(struct kvm *self, u16 port, void *data, int direction, int size, u32 count); 443fdf659dSSasha Levin bool kvm__emulate_mmio(struct kvm *self, u64 phys_addr, u8 *data, u32 len, u8 is_write); 45ae1fae34SPekka Enberg 46ae1fae34SPekka Enberg /* 47ae1fae34SPekka Enberg * Debugging 48ae1fae34SPekka Enberg */ 49090f898eSCyrill Gorcunov void kvm__dump_mem(struct kvm *self, unsigned long addr, unsigned long size); 50ae1fae34SPekka Enberg 51ae1fae34SPekka Enberg extern const char *kvm_exit_reasons[]; 52ae1fae34SPekka Enberg 539292f776SCyrill Gorcunov static inline bool host_ptr_in_ram(struct kvm *self, void *p) 549292f776SCyrill Gorcunov { 559292f776SCyrill Gorcunov return self->ram_start <= p && p < (self->ram_start + self->ram_size); 569292f776SCyrill Gorcunov } 579292f776SCyrill Gorcunov 583fdf659dSSasha Levin static inline u32 segment_to_flat(u16 selector, u16 offset) 599292f776SCyrill Gorcunov { 603fdf659dSSasha Levin return ((u32)selector << 4) + (u32) offset; 619292f776SCyrill Gorcunov } 629292f776SCyrill Gorcunov 639292f776SCyrill Gorcunov static inline void *guest_flat_to_host(struct kvm *self, unsigned long offset) 649292f776SCyrill Gorcunov { 659292f776SCyrill Gorcunov return self->ram_start + offset; 669292f776SCyrill Gorcunov } 679292f776SCyrill Gorcunov 683fdf659dSSasha Levin static inline void *guest_real_to_host(struct kvm *self, u16 selector, u16 offset) 699292f776SCyrill Gorcunov { 709292f776SCyrill Gorcunov unsigned long flat = segment_to_flat(selector, offset); 719292f776SCyrill Gorcunov 729292f776SCyrill Gorcunov return guest_flat_to_host(self, flat); 739292f776SCyrill Gorcunov } 749292f776SCyrill Gorcunov 75ae1fae34SPekka Enberg #endif /* KVM__KVM_H */ 76