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 struct KVMState;
  48 typedef struct KVMState KVMState;
  49 extern KVMState *kvm_state;
  50
  51 /* external API */
  52
  53 int kvm_init(void);
  54
  55 int kvm_has_sync_mmu(void);
  56 int kvm_has_vcpu_events(void);
  57 int kvm_has_robust_singlestep(void);
  58 int kvm_has_debugregs(void);
  59 int kvm_has_xsave(void);
  60 int kvm_has_xcrs(void);
  61 int kvm_has_pit_state2(void);
  62 int kvm_has_many_ioeventfds(void);
  63 int kvm_has_gsi_routing(void);
  64
  65 int kvm_allows_irq0_override(void);
  66
  67 #ifdef NEED_CPU_H
  68 int kvm_init_vcpu(CPUArchState *env);
  69
  70 int kvm_cpu_exec(CPUArchState *env);
  71
  72 #if !defined(CONFIG_USER_ONLY)
  73 void kvm_setup_guest_memory(void *start, size_t size);
  74
  75 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  76 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  77 void kvm_flush_coalesced_mmio_buffer(void);
  78 #endif
  79
  80 int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr,
  81                           target_ulong len, int type);
  82 int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr,
  83                           target_ulong len, int type);
  84 void kvm_remove_all_breakpoints(CPUArchState *current_env);
  85 int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap);
  86 #ifndef _WIN32
  87 int kvm_set_signal_mask(CPUArchState *env, const sigset_t *sigset);
  88 #endif
  89
  90 int kvm_on_sigbus_vcpu(CPUArchState *env, int code, void *addr);
  91 int kvm_on_sigbus(int code, void *addr);
  92
  93 /* internal API */
  94
  95 int kvm_ioctl(KVMState *s, int type, ...);
  96
  97 int kvm_vm_ioctl(KVMState *s, int type, ...);
  98
  99 int kvm_vcpu_ioctl(CPUArchState *env, int type, ...);
 100
 101 /* Arch specific hooks */
 102
 103 extern const KVMCapabilityInfo kvm_arch_required_capabilities[];
 104
 105 void kvm_arch_pre_run(CPUArchState *env, struct kvm_run *run);
 106 void kvm_arch_post_run(CPUArchState *env, struct kvm_run *run);
 107
 108 int kvm_arch_handle_exit(CPUArchState *env, struct kvm_run *run);
 109
 110 int kvm_arch_process_async_events(CPUArchState *env);
 111
 112 int kvm_arch_get_registers(CPUArchState *env);
 113
 114 /* state subset only touched by the VCPU itself during runtime */
 115 #define KVM_PUT_RUNTIME_STATE   1
 116 /* state subset modified during VCPU reset */
 117 #define KVM_PUT_RESET_STATE     2
 118 /* full state set, modified during initialization or on vmload */
 119 #define KVM_PUT_FULL_STATE      3
 120
 121 int kvm_arch_put_registers(CPUArchState *env, int level);
 122
 123 int kvm_arch_init(KVMState *s);
 124
 125 int kvm_arch_init_vcpu(CPUArchState *env);
 126
 127 void kvm_arch_reset_vcpu(CPUArchState *env);
 128
 129 int kvm_arch_on_sigbus_vcpu(CPUArchState *env, int code, void *addr);
 130 int kvm_arch_on_sigbus(int code, void *addr);
 131
 132 void kvm_arch_init_irq_routing(KVMState *s);
 133
 134 int kvm_irqchip_set_irq(KVMState *s, int irq, int level);
 135 int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg);
 136
 137 void kvm_irqchip_add_irq_route(KVMState *s, int gsi, int irqchip, int pin);
 138
 139 void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
 140 void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
 141
 142 struct kvm_guest_debug;
 143 struct kvm_debug_exit_arch;
 144
 145 struct kvm_sw_breakpoint {
 146     target_ulong pc;
 147     target_ulong saved_insn;
 148     int use_count;
 149     QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
 150 };
 151
 152 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
 153
 154 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUArchState *env,
 155                                                  target_ulong pc);
 156
 157 int kvm_sw_breakpoints_active(CPUArchState *env);
 158
 159 int kvm_arch_insert_sw_breakpoint(CPUArchState *current_env,
 160                                   struct kvm_sw_breakpoint *bp);
 161 int kvm_arch_remove_sw_breakpoint(CPUArchState *current_env,
 162                                   struct kvm_sw_breakpoint *bp);
 163 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
 164                                   target_ulong len, int type);
 165 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
 166                                   target_ulong len, int type);
 167 void kvm_arch_remove_all_hw_breakpoints(void);
 168
 169 void kvm_arch_update_guest_debug(CPUArchState *env, struct kvm_guest_debug *dbg);
 170
 171 bool kvm_arch_stop_on_emulation_error(CPUArchState *env);
 172
 173 int kvm_check_extension(KVMState *s, unsigned int extension);
 174
 175 uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
 176                                       uint32_t index, int reg);
 177 void kvm_cpu_synchronize_state(CPUArchState *env);
 178 void kvm_cpu_synchronize_post_reset(CPUArchState *env);
 179 void kvm_cpu_synchronize_post_init(CPUArchState *env);
 180
 181 /* generic hooks - to be moved/refactored once there are more users */
 182
 183 static inline void cpu_synchronize_state(CPUArchState *env)
 184 {
 185     if (kvm_enabled()) {
 186         kvm_cpu_synchronize_state(env);
 187     }
 188 }
 189
 190 static inline void cpu_synchronize_post_reset(CPUArchState *env)
 191 {
 192     if (kvm_enabled()) {
 193         kvm_cpu_synchronize_post_reset(env);
 194     }
 195 }
 196
 197 static inline void cpu_synchronize_post_init(CPUArchState *env)
 198 {
 199     if (kvm_enabled()) {
 200         kvm_cpu_synchronize_post_init(env);
 201     }
 202 }
 203
 204
 205 #if !defined(CONFIG_USER_ONLY)
 206 int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr,
 207                                        target_phys_addr_t *phys_addr);
 208 #endif
 209
 210 #endif
 211 int kvm_set_ioeventfd_mmio(int fd, uint32_t adr, uint32_t val, bool assign,
 212                            uint32_t size);
 213
 214 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
 215
 216 int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg);
 217 void kvm_irqchip_release_virq(KVMState *s, int virq);
 218
 219 int kvm_irqchip_add_irqfd(KVMState *s, int fd, int virq);
 220 int kvm_irqchip_remove_irqfd(KVMState *s, int fd, int virq);
 221 int kvm_irqchip_add_irq_notifier(KVMState *s, EventNotifier *n, int virq);
 222 int kvm_irqchip_remove_irq_notifier(KVMState *s, EventNotifier *n, int virq);
 223 #endif