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