kvm.h

   1 /*
   2  * QEMU KVM support
   3  *
   4  * Copyright IBM, Corp. 2008
   5  *
   6  * Authors:
   7  *  Anthony Liguori   <aliguori@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  *
  12  */
  13
  14 #ifndef QEMU_KVM_H
  15 #define QEMU_KVM_H
  16
  17 #include <errno.h>
  18 #include "config-host.h"
  19 #include "qemu-queue.h"
  20
  21 #ifdef CONFIG_KVM
  22 #include <linux/kvm.h>
  23 #endif
  24
  25 extern int kvm_allowed;
  26 extern bool kvm_kernel_irqchip;
  27
  28 #if defined CONFIG_KVM || !defined NEED_CPU_H
  29 #define kvm_enabled()           (kvm_allowed)
  30 #define kvm_irqchip_in_kernel() (kvm_kernel_irqchip)
  31 #else
  32 #define kvm_enabled()           (0)
  33 #define kvm_irqchip_in_kernel() (false)
  34 #endif
  35
  36 struct kvm_run;
  37 struct kvm_lapic_state;
  38
  39 typedef struct KVMCapabilityInfo {
  40     const char *name;
  41     int value;
  42 } KVMCapabilityInfo;
  43
  44 #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP }
  45 #define KVM_CAP_LAST_INFO { NULL, 0 }
  46
  47 /* external API */
  48
  49 int kvm_init(void);
  50
  51 int kvm_has_sync_mmu(void);
  52 int kvm_has_vcpu_events(void);
  53 int kvm_has_robust_singlestep(void);
  54 int kvm_has_debugregs(void);
  55 int kvm_has_xsave(void);
  56 int kvm_has_xcrs(void);
  57 int kvm_has_many_ioeventfds(void);
  58 int kvm_has_pit_state2(void);
  59 int kvm_has_gsi_routing(void);
  60 int kvm_has_intx_set_mask(void);
  61
  62 int kvm_allows_irq0_override(void);
  63
  64 #ifdef NEED_CPU_H
  65 int kvm_init_vcpu(CPUArchState *env);
  66
  67 int kvm_cpu_exec(CPUArchState *env);
  68
  69 #if !defined(CONFIG_USER_ONLY)
  70 void kvm_setup_guest_memory(void *start, size_t size);
  71
  72 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  73 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  74 void kvm_flush_coalesced_mmio_buffer(void);
  75 #endif
  76
  77 int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr,
  78                           target_ulong len, int type);
  79 int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr,
  80                           target_ulong len, int type);
  81 void kvm_remove_all_breakpoints(CPUArchState *current_env);
  82 int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap);
  83 #ifndef _WIN32
  84 int kvm_set_signal_mask(CPUArchState *env, const sigset_t *sigset);
  85 #endif
  86
  87 int kvm_on_sigbus_vcpu(CPUArchState *env, int code, void *addr);
  88 int kvm_on_sigbus(int code, void *addr);
  89 #endif /* NEED_CPU_H */
  90
  91 /* internal API */
  92
  93 struct KVMState;
  94 typedef struct KVMState KVMState;
  95 extern KVMState *kvm_state;
  96
  97 int kvm_ioctl(KVMState *s, int type, ...);
  98
  99 int kvm_vm_ioctl(KVMState *s, int type, ...);
 100
 101 #ifdef NEED_CPU_H
 102 int kvm_vcpu_ioctl(CPUArchState *env, int type, ...);
 103
 104 /* Arch specific hooks */
 105
 106 extern const KVMCapabilityInfo kvm_arch_required_capabilities[];
 107
 108 void kvm_arch_pre_run(CPUArchState *env, struct kvm_run *run);
 109 void kvm_arch_post_run(CPUArchState *env, struct kvm_run *run);
 110
 111 int kvm_arch_handle_exit(CPUArchState *env, struct kvm_run *run);
 112
 113 int kvm_arch_process_async_events(CPUArchState *env);
 114
 115 int kvm_arch_get_registers(CPUArchState *env);
 116
 117 /* state subset only touched by the VCPU itself during runtime */
 118 #define KVM_PUT_RUNTIME_STATE   1
 119 /* state subset modified during VCPU reset */
 120 #define KVM_PUT_RESET_STATE     2
 121 /* full state set, modified during initialization or on vmload */
 122 #define KVM_PUT_FULL_STATE      3
 123
 124 int kvm_arch_put_registers(CPUArchState *env, int level);
 125
 126 int kvm_arch_init(KVMState *s);
 127
 128 int kvm_arch_init_vcpu(CPUArchState *env);
 129
 130 void kvm_arch_reset_vcpu(CPUArchState *env);
 131
 132 int kvm_arch_on_sigbus_vcpu(CPUArchState *env, int code, void *addr);
 133 int kvm_arch_on_sigbus(int code, void *addr);
 134
 135 void kvm_arch_init_irq_routing(KVMState *s);
 136
 137 int kvm_irqchip_set_irq(KVMState *s, int irq, int level);
 138
 139 void kvm_irqchip_add_route(KVMState *s, int gsi, int irqchip, int pin);
 140 int kvm_irqchip_commit_routes(KVMState *s);
 141
 142 void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
 143 void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
 144
 145 struct kvm_guest_debug;
 146 struct kvm_debug_exit_arch;
 147
 148 struct kvm_sw_breakpoint {
 149     target_ulong pc;
 150     target_ulong saved_insn;
 151     int use_count;
 152     QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
 153 };
 154
 155 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
 156
 157 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUArchState *env,
 158                                                  target_ulong pc);
 159
 160 int kvm_sw_breakpoints_active(CPUArchState *env);
 161
 162 int kvm_arch_insert_sw_breakpoint(CPUArchState *current_env,
 163                                   struct kvm_sw_breakpoint *bp);
 164 int kvm_arch_remove_sw_breakpoint(CPUArchState *current_env,
 165                                   struct kvm_sw_breakpoint *bp);
 166 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
 167                                   target_ulong len, int type);
 168 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
 169                                   target_ulong len, int type);
 170 void kvm_arch_remove_all_hw_breakpoints(void);
 171
 172 void kvm_arch_update_guest_debug(CPUArchState *env, struct kvm_guest_debug *dbg);
 173
 174 bool kvm_arch_stop_on_emulation_error(CPUArchState *env);
 175
 176 int kvm_check_extension(KVMState *s, unsigned int extension);
 177
 178 uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
 179                                       uint32_t index, int reg);
 180 void kvm_cpu_synchronize_state(CPUArchState *env);
 181 void kvm_cpu_synchronize_post_reset(CPUArchState *env);
 182 void kvm_cpu_synchronize_post_init(CPUArchState *env);
 183
 184 /* generic hooks - to be moved/refactored once there are more users */
 185
 186 static inline void cpu_synchronize_state(CPUArchState *env)
 187 {
 188     if (kvm_enabled()) {
 189         kvm_cpu_synchronize_state(env);
 190     }
 191 }
 192
 193 static inline void cpu_synchronize_post_reset(CPUArchState *env)
 194 {
 195     if (kvm_enabled()) {
 196         kvm_cpu_synchronize_post_reset(env);
 197     }
 198 }
 199
 200 static inline void cpu_synchronize_post_init(CPUArchState *env)
 201 {
 202     if (kvm_enabled()) {
 203         kvm_cpu_synchronize_post_init(env);
 204     }
 205 }
 206
 207
 208 #if !defined(CONFIG_USER_ONLY)
 209 int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr,
 210                                        target_phys_addr_t *phys_addr);
 211 #endif
 212
 213 #endif
 214 int kvm_set_ioeventfd_mmio(int fd, uint32_t adr, uint32_t val, bool assign,
 215                            uint32_t size);
 216
 217 int kvm_set_irqfd(int gsi, int fd, bool assigned);
 218
 219 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
 220
 221 typedef struct KVMMsiMessage {
 222     uint32_t gsi;
 223     uint32_t addr_lo;
 224     uint32_t addr_hi;
 225     uint32_t data;
 226 } KVMMsiMessage;
 227
 228 int kvm_get_irq_route_gsi(void);
 229
 230 int kvm_msi_message_add(KVMMsiMessage *msg);
 231 int kvm_msi_message_del(KVMMsiMessage *msg);
 232 int kvm_msi_message_update(KVMMsiMessage *old, KVMMsiMessage *new);
 233
 234 #ifndef NEED_CPU_H
 235 int kvm_irqchip_set_irq(KVMState *s, int irq, int level);
 236 int kvm_irqchip_commit_routes(KVMState *s);
 237 #endif
 238
 239 #ifdef NEED_CPU_H
 240 #include "qemu-kvm.h"
 241 #endif
 242
 243 #endif