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