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 #ifdef NEED_CPU_H
  21 #include "qemu-kvm.h"
  22 #endif
  23
  24 #ifdef CONFIG_KVM
  25 #include <linux/kvm.h>
  26 #endif
  27
  28 extern int kvm_allowed;
  29
  30 #if defined CONFIG_KVM || !defined NEED_CPU_H
  31 #define kvm_enabled() (kvm_allowed)
  32 #else
  33 #define kvm_enabled() (0)
  34 #endif
  35
  36 #ifdef OBSOLETE_KVM_IMPL
  37 struct kvm_run;
  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 #endif /* OBSOLETE_KVM_IMPL */
  51
  52 int kvm_has_sync_mmu(void);
  53 int kvm_has_vcpu_events(void);
  54 int kvm_has_robust_singlestep(void);
  55 int kvm_has_debugregs(void);
  56 int kvm_has_xsave(void);
  57 int kvm_has_xcrs(void);
  58 int kvm_has_many_ioeventfds(void);
  59
  60 #ifdef NEED_CPU_H
  61 int kvm_init_vcpu(CPUState *env);
  62
  63 int kvm_cpu_exec(CPUState *env);
  64
  65 #if !defined(CONFIG_USER_ONLY)
  66 void kvm_cpu_register_phys_memory_client(void);
  67
  68 void kvm_setup_guest_memory(void *start, size_t size);
  69
  70 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  71 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  72 void kvm_flush_coalesced_mmio_buffer(void);
  73 #endif
  74
  75 int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
  76                           target_ulong len, int type);
  77 int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
  78                           target_ulong len, int type);
  79 void kvm_remove_all_breakpoints(CPUState *current_env);
  80 int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap);
  81 #ifndef _WIN32
  82 int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset);
  83 #endif
  84
  85 int kvm_pit_in_kernel(void);
  86
  87 int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr);
  88 int kvm_on_sigbus(int code, void *addr);
  89
  90 /* internal API */
  91
  92 struct KVMState;
  93 typedef struct KVMState KVMState;
  94 extern KVMState *kvm_state;
  95
  96 int kvm_ioctl(KVMState *s, int type, ...);
  97
  98 int kvm_vm_ioctl(KVMState *s, int type, ...);
  99
 100 int kvm_vcpu_ioctl(CPUState *env, int type, ...);
 101
 102 /* Arch specific hooks */
 103
 104 #ifdef OBSOLETE_KVM_IMPL
 105 extern const KVMCapabilityInfo kvm_arch_required_capabilities[];
 106 #endif
 107
 108 void kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
 109 void kvm_arch_post_run(CPUState *env, struct kvm_run *run);
 110
 111 int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
 112
 113 int kvm_arch_process_async_events(CPUState *env);
 114
 115 int kvm_arch_get_registers(CPUState *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(CPUState *env, int level);
 125
 126 int kvm_arch_init(KVMState *s);
 127
 128 int kvm_arch_init_vcpu(CPUState *env);
 129
 130 void kvm_arch_reset_vcpu(CPUState *env);
 131
 132 int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr);
 133 int kvm_arch_on_sigbus(int code, void *addr);
 134
 135 struct kvm_guest_debug;
 136 struct kvm_debug_exit_arch;
 137
 138 struct kvm_sw_breakpoint {
 139     target_ulong pc;
 140     target_ulong saved_insn;
 141     int use_count;
 142     QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
 143 };
 144
 145 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
 146
 147 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
 148                                                  target_ulong pc);
 149
 150 int kvm_sw_breakpoints_active(CPUState *env);
 151
 152 int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
 153                                   struct kvm_sw_breakpoint *bp);
 154 int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
 155                                   struct kvm_sw_breakpoint *bp);
 156 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
 157                                   target_ulong len, int type);
 158 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
 159                                   target_ulong len, int type);
 160 void kvm_arch_remove_all_hw_breakpoints(void);
 161
 162 void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
 163
 164 bool kvm_arch_stop_on_emulation_error(CPUState *env);
 165
 166 int kvm_check_extension(KVMState *s, unsigned int extension);
 167
 168 uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function,
 169                                       uint32_t index, int reg);
 170 void kvm_cpu_synchronize_state(CPUState *env);
 171 void kvm_cpu_synchronize_post_reset(CPUState *env);
 172 void kvm_cpu_synchronize_post_init(CPUState *env);
 173
 174 /* generic hooks - to be moved/refactored once there are more users */
 175
 176 static inline void cpu_synchronize_state(CPUState *env)
 177 {
 178     if (kvm_enabled()) {
 179         kvm_cpu_synchronize_state(env);
 180     }
 181 }
 182
 183 static inline void cpu_synchronize_post_reset(CPUState *env)
 184 {
 185     if (kvm_enabled()) {
 186         kvm_cpu_synchronize_post_reset(env);
 187     }
 188 }
 189
 190 static inline void cpu_synchronize_post_init(CPUState *env)
 191 {
 192     if (kvm_enabled()) {
 193         kvm_cpu_synchronize_post_init(env);
 194     }
 195 }
 196
 197 #if !defined(CONFIG_USER_ONLY)
 198 int kvm_physical_memory_addr_from_ram(KVMState *s, ram_addr_t ram_addr,
 199                                       target_phys_addr_t *phys_addr);
 200 #endif
 201
 202 #endif
 203 int kvm_set_ioeventfd_mmio_long(int fd, uint32_t adr, uint32_t val, bool assign);
 204
 205 #if defined(KVM_IRQFD) && defined(CONFIG_KVM)
 206 int kvm_set_irqfd(int gsi, int fd, bool assigned);
 207 #else
 208 static inline
 209 int kvm_set_irqfd(int gsi, int fd, bool assigned)
 210 {
 211     return -ENOSYS;
 212 }
 213 #endif
 214
 215 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
 216
 217 typedef struct KVMMsiMessage {
 218     uint32_t gsi;
 219     uint32_t addr_lo;
 220     uint32_t addr_hi;
 221     uint32_t data;
 222 } KVMMsiMessage;
 223
 224 int kvm_has_gsi_routing(void);
 225 int kvm_get_irq_route_gsi(void);
 226
 227 int kvm_msi_message_add(KVMMsiMessage *msg);
 228 int kvm_msi_message_del(KVMMsiMessage *msg);
 229 int kvm_msi_message_update(KVMMsiMessage *old, KVMMsiMessage *new);
 230
 231 int kvm_commit_irq_routes(void);
 232
 233 int kvm_irqchip_in_kernel(void);
 234
 235 int kvm_set_irq(int irq, int level, int *status);
 236
 237 #endif