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 <linux/kvm.h> /* for struct kvm_regs */ 7ae1fae34SPekka Enberg 8ae1fae34SPekka Enberg #include <stdbool.h> 9ae1fae34SPekka Enberg #include <stdint.h> 10ae1fae34SPekka Enberg 11ae1fae34SPekka Enberg struct kvm { 12ae1fae34SPekka Enberg int sys_fd; /* For system ioctls(), i.e. /dev/kvm */ 13ae1fae34SPekka Enberg int vm_fd; /* For VM ioctls() */ 14ae1fae34SPekka Enberg int vcpu_fd; /* For VCPU ioctls() */ 15ae1fae34SPekka Enberg struct kvm_run *kvm_run; 16ae1fae34SPekka Enberg 17*9f532d00SPekka Enberg struct disk_image *disk_image; 18ae1fae34SPekka Enberg uint64_t ram_size; 19ae1fae34SPekka Enberg void *ram_start; 20ae1fae34SPekka Enberg 212049569dSPekka Enberg bool nmi_disabled; 222049569dSPekka Enberg 23dbdb74c2SPekka Enberg uint16_t boot_selector; 24edc8a14dSPekka Enberg uint16_t boot_ip; 25dbdb74c2SPekka Enberg uint16_t boot_sp; 26edc8a14dSPekka Enberg 27ae1fae34SPekka Enberg struct kvm_regs regs; 2853602077SPekka Enberg struct kvm_sregs sregs; 29ce4d0766SPekka Enberg struct kvm_fpu fpu; 3053d48714SPekka Enberg struct kvm_msrs *msrs; /* dynamically allocated */ 31da8883c1SPekka Enberg 32da8883c1SPekka Enberg struct interrupt_table interrupt_table; 33ae1fae34SPekka Enberg }; 34ae1fae34SPekka Enberg 35192a99d1SCyrill Gorcunov struct kvm *kvm__init(const char *kvm_dev, unsigned long ram_size); 369ef4c68eSPekka Enberg void kvm__delete(struct kvm *self); 37a1fe6bc5SPekka Enberg void kvm__setup_cpuid(struct kvm *self); 38ae1fae34SPekka Enberg void kvm__enable_singlestep(struct kvm *self); 392065a6f7SCyrill Gorcunov bool kvm__load_kernel(struct kvm *kvm, const char *kernel_filename, 402065a6f7SCyrill Gorcunov const char *initrd_filename, const char *kernel_cmdline); 417fb218bdSPekka Enberg void kvm__reset_vcpu(struct kvm *self); 422f3976eeSPekka Enberg void kvm__setup_mem(struct kvm *self); 43ae1fae34SPekka Enberg void kvm__run(struct kvm *self); 448b1ff07eSPekka Enberg void kvm__irq_line(struct kvm *self, int irq, int level); 452049569dSPekka Enberg bool kvm__emulate_io(struct kvm *self, uint16_t port, void *data, int direction, int size, uint32_t count); 4629443dabSPekka Enberg bool kvm__emulate_mmio(struct kvm *self, uint64_t phys_addr, uint8_t *data, uint32_t len, uint8_t is_write); 47ae1fae34SPekka Enberg 48ae1fae34SPekka Enberg /* 49ae1fae34SPekka Enberg * Debugging 50ae1fae34SPekka Enberg */ 51ae1fae34SPekka Enberg void kvm__show_code(struct kvm *self); 52ae1fae34SPekka Enberg void kvm__show_registers(struct kvm *self); 53f01944c8SPekka Enberg void kvm__show_page_tables(struct kvm *self); 54090f898eSCyrill Gorcunov void kvm__dump_mem(struct kvm *self, unsigned long addr, unsigned long size); 55ae1fae34SPekka Enberg 56ae1fae34SPekka Enberg extern const char *kvm_exit_reasons[]; 57ae1fae34SPekka Enberg 589292f776SCyrill Gorcunov static inline bool host_ptr_in_ram(struct kvm *self, void *p) 599292f776SCyrill Gorcunov { 609292f776SCyrill Gorcunov return self->ram_start <= p && p < (self->ram_start + self->ram_size); 619292f776SCyrill Gorcunov } 629292f776SCyrill Gorcunov 639292f776SCyrill Gorcunov static inline uint32_t segment_to_flat(uint16_t selector, uint16_t offset) 649292f776SCyrill Gorcunov { 659292f776SCyrill Gorcunov return ((uint32_t)selector << 4) + (uint32_t) offset; 669292f776SCyrill Gorcunov } 679292f776SCyrill Gorcunov 689292f776SCyrill Gorcunov static inline void *guest_flat_to_host(struct kvm *self, unsigned long offset) 699292f776SCyrill Gorcunov { 709292f776SCyrill Gorcunov return self->ram_start + offset; 719292f776SCyrill Gorcunov } 729292f776SCyrill Gorcunov 739292f776SCyrill Gorcunov static inline void *guest_real_to_host(struct kvm *self, uint16_t selector, uint16_t offset) 749292f776SCyrill Gorcunov { 759292f776SCyrill Gorcunov unsigned long flat = segment_to_flat(selector, offset); 769292f776SCyrill Gorcunov 779292f776SCyrill Gorcunov return guest_flat_to_host(self, flat); 789292f776SCyrill Gorcunov } 799292f776SCyrill Gorcunov 80ae1fae34SPekka Enberg #endif /* KVM__KVM_H */ 81