qemu-kvm.h

   1 /*
   2  * qemu/kvm integration
   3  *
   4  * Copyright (C) 2006-2008 Qumranet Technologies
   5  *
   6  * Licensed under the terms of the GNU GPL version 2 or higher.
   7  */
   8 #ifndef THE_ORIGINAL_AND_TRUE_QEMU_KVM_H
   9 #define THE_ORIGINAL_AND_TRUE_QEMU_KVM_H
  10
  11 #include "cpu.h"
  12
  13 #include <signal.h>
  14 #include <stdlib.h>
  15
  16 #ifdef CONFIG_KVM
  17
  18 #if defined(__s390__)
  19 #include <asm/ptrace.h>
  20 #endif
  21
  22 #include <stdint.h>
  23
  24 #ifndef __user
  25 #define __user       /* temporary, until installed via make headers_install */
  26 #endif
  27
  28 #include <linux/kvm.h>
  29
  30 #include <signal.h>
  31
  32 /* FIXME: share this number with kvm */
  33 /* FIXME: or dynamically alloc/realloc regions */
  34 #ifdef __s390__
  35 #define KVM_MAX_NUM_MEM_REGIONS 1u
  36 #define MAX_VCPUS 64
  37 #define LIBKVM_S390_ORIGIN (0UL)
  38 #elif defined(__ia64__)
  39 #define KVM_MAX_NUM_MEM_REGIONS 32u
  40 #define MAX_VCPUS 256
  41 #else
  42 #define KVM_MAX_NUM_MEM_REGIONS 32u
  43 #define MAX_VCPUS 16
  44 #endif
  45
  46 /* kvm abi verison variable */
  47 extern int kvm_abi;
  48
  49 /**
  50  * \brief The KVM context
  51  *
  52  * The verbose KVM context
  53  */
  54
  55 struct kvm_context {
  56     void *opaque;
  57     /// is dirty pages logging enabled for all regions or not
  58     int dirty_pages_log_all;
  59     /// do not create in-kernel irqchip if set
  60     int no_irqchip_creation;
  61     /// in-kernel irqchip status
  62     int irqchip_in_kernel;
  63     /// ioctl to use to inject interrupts
  64     int irqchip_inject_ioctl;
  65     /// do not create in-kernel pit if set
  66     int no_pit_creation;
  67 #ifdef KVM_CAP_IRQ_ROUTING
  68     struct kvm_irq_routing *irq_routes;
  69     int nr_allocated_irq_routes;
  70 #endif
  71     void *used_gsi_bitmap;
  72     int max_gsi;
  73 };
  74
  75 typedef struct kvm_context *kvm_context_t;
  76
  77 #include "kvm.h"
  78 int kvm_alloc_kernel_memory(kvm_context_t kvm, unsigned long memory,
  79                             void **vm_mem);
  80 int kvm_alloc_userspace_memory(kvm_context_t kvm, unsigned long memory,
  81                                void **vm_mem);
  82
  83 int kvm_arch_create(kvm_context_t kvm, unsigned long phys_mem_bytes,
  84                     void **vm_mem);
  85
  86 int kvm_arch_run(CPUState *env);
  87
  88
  89 void kvm_show_code(CPUState *env);
  90
  91 int handle_halt(CPUState *env);
  92
  93 int handle_shutdown(kvm_context_t kvm, CPUState *env);
  94 void post_kvm_run(kvm_context_t kvm, CPUState *env);
  95 int pre_kvm_run(kvm_context_t kvm, CPUState *env);
  96 int handle_io_window(kvm_context_t kvm);
  97 int try_push_interrupts(kvm_context_t kvm);
  98
  99 #if defined(__x86_64__) || defined(__i386__)
 100 struct kvm_msr_list *kvm_get_msr_list(kvm_context_t);
 101 int kvm_get_msrs(CPUState *env, struct kvm_msr_entry *msrs, int n);
 102 int kvm_set_msrs(CPUState *env, struct kvm_msr_entry *msrs, int n);
 103 int kvm_get_mce_cap_supported(kvm_context_t, uint64_t *mce_cap,
 104                               int *max_banks);
 105 int kvm_setup_mce(CPUState *env, uint64_t *mcg_cap);
 106 struct kvm_x86_mce;
 107 int kvm_set_mce(CPUState *env, struct kvm_x86_mce *mce);
 108 #endif
 109
 110 /*!
 111  * \brief Create new KVM context
 112  *
 113  * This creates a new kvm_context. A KVM context is a small area of data that
 114  * holds information about the KVM instance that gets created by this call.\n
 115  * This should always be your first call to KVM.
 116  *
 117  * \param opaque Not used
 118  * \return NULL on failure
 119  */
 120 int kvm_init(int smp_cpus);
 121
 122 /*!
 123  * \brief Disable the in-kernel IRQCHIP creation
 124  *
 125  * In-kernel irqchip is enabled by default. If userspace irqchip is to be used,
 126  * this should be called prior to kvm_create().
 127  *
 128  * \param kvm Pointer to the kvm_context
 129  */
 130 void kvm_disable_irqchip_creation(kvm_context_t kvm);
 131
 132 /*!
 133  * \brief Disable the in-kernel PIT creation
 134  *
 135  * In-kernel pit is enabled by default. If userspace pit is to be used,
 136  * this should be called prior to kvm_create().
 137  *
 138  *  \param kvm Pointer to the kvm_context
 139  */
 140 void kvm_disable_pit_creation(kvm_context_t kvm);
 141
 142 /*!
 143  * \brief Create new virtual machine
 144  *
 145  * This creates a new virtual machine, maps physical RAM to it, and creates a
 146  * virtual CPU for it.\n
 147  * \n
 148  * Memory gets mapped for addresses 0->0xA0000, 0xC0000->phys_mem_bytes
 149  *
 150  * \param kvm Pointer to the current kvm_context
 151  * \param phys_mem_bytes The amount of physical ram you want the VM to have
 152  * \param phys_mem This pointer will be set to point to the memory that
 153  * kvm_create allocates for physical RAM
 154  * \return 0 on success
 155  */
 156 int kvm_create(kvm_context_t kvm, unsigned long phys_mem_bytes,
 157                void **phys_mem);
 158 int kvm_create_vm(kvm_context_t kvm);
 159 void kvm_create_irqchip(kvm_context_t kvm);
 160
 161 /*!
 162  * \brief Start the VCPU
 163  *
 164  * This starts the VCPU and virtualization is started.\n
 165  * \n
 166  * This function will not return until any of these conditions are met:
 167  * - An IO/MMIO handler does not return "0"
 168  * - An exception that neither the guest OS, nor KVM can handle occurs
 169  *
 170  * \note This function will call the callbacks registered in kvm_init()
 171  * to emulate those functions
 172  * \note If you at any point want to interrupt the VCPU, kvm_run() will
 173  * listen to the EINTR signal. This allows you to simulate external interrupts
 174  * and asyncronous IO.
 175  *
 176  * \param kvm Pointer to the current kvm_context
 177  * \param vcpu Which virtual CPU should be started
 178  * \return 0 on success, but you really shouldn't expect this function to
 179  * return except for when an error has occured, or when you have sent it
 180  * an EINTR signal.
 181  */
 182 int kvm_run(CPUState *env);
 183
 184 /*!
 185  * \brief Check if a vcpu is ready for interrupt injection
 186  *
 187  * This checks if vcpu interrupts are not masked by mov ss or sti.
 188  *
 189  * \param kvm Pointer to the current kvm_context
 190  * \param vcpu Which virtual CPU should get dumped
 191  * \return boolean indicating interrupt injection readiness
 192  */
 193 int kvm_is_ready_for_interrupt_injection(CPUState *env);
 194
 195 /*!
 196  * \brief Read VCPU registers
 197  *
 198  * This gets the GP registers from the VCPU and outputs them
 199  * into a kvm_regs structure
 200  *
 201  * \note This function returns a \b copy of the VCPUs registers.\n
 202  * If you wish to modify the VCPUs GP registers, you should call kvm_set_regs()
 203  *
 204  * \param kvm Pointer to the current kvm_context
 205  * \param vcpu Which virtual CPU should get dumped
 206  * \param regs Pointer to a kvm_regs which will be populated with the VCPUs
 207  * registers values
 208  * \return 0 on success
 209  */
 210 int kvm_get_regs(CPUState *env, struct kvm_regs *regs);
 211
 212 /*!
 213  * \brief Write VCPU registers
 214  *
 215  * This sets the GP registers on the VCPU from a kvm_regs structure
 216  *
 217  * \note When this function returns, the regs pointer and the data it points to
 218  * can be discarded
 219  * \param kvm Pointer to the current kvm_context
 220  * \param vcpu Which virtual CPU should get dumped
 221  * \param regs Pointer to a kvm_regs which will be populated with the VCPUs
 222  * registers values
 223  * \return 0 on success
 224  */
 225 int kvm_set_regs(CPUState *env, struct kvm_regs *regs);
 226 /*!
 227  * \brief Read VCPU fpu registers
 228  *
 229  * This gets the FPU registers from the VCPU and outputs them
 230  * into a kvm_fpu structure
 231  *
 232  * \note This function returns a \b copy of the VCPUs registers.\n
 233  * If you wish to modify the VCPU FPU registers, you should call kvm_set_fpu()
 234  *
 235  * \param kvm Pointer to the current kvm_context
 236  * \param vcpu Which virtual CPU should get dumped
 237  * \param fpu Pointer to a kvm_fpu which will be populated with the VCPUs
 238  * fpu registers values
 239  * \return 0 on success
 240  */
 241 int kvm_get_fpu(CPUState *env, struct kvm_fpu *fpu);
 242
 243 /*!
 244  * \brief Write VCPU fpu registers
 245  *
 246  * This sets the FPU registers on the VCPU from a kvm_fpu structure
 247  *
 248  * \note When this function returns, the fpu pointer and the data it points to
 249  * can be discarded
 250  * \param kvm Pointer to the current kvm_context
 251  * \param vcpu Which virtual CPU should get dumped
 252  * \param fpu Pointer to a kvm_fpu which holds the new vcpu fpu state
 253  * \return 0 on success
 254  */
 255 int kvm_set_fpu(CPUState *env, struct kvm_fpu *fpu);
 256
 257 /*!
 258  * \brief Read VCPU system registers
 259  *
 260  * This gets the non-GP registers from the VCPU and outputs them
 261  * into a kvm_sregs structure
 262  *
 263  * \note This function returns a \b copy of the VCPUs registers.\n
 264  * If you wish to modify the VCPUs non-GP registers, you should call
 265  * kvm_set_sregs()
 266  *
 267  * \param kvm Pointer to the current kvm_context
 268  * \param vcpu Which virtual CPU should get dumped
 269  * \param regs Pointer to a kvm_sregs which will be populated with the VCPUs
 270  * registers values
 271  * \return 0 on success
 272  */
 273 int kvm_get_sregs(CPUState *env, struct kvm_sregs *regs);
 274
 275 /*!
 276  * \brief Write VCPU system registers
 277  *
 278  * This sets the non-GP registers on the VCPU from a kvm_sregs structure
 279  *
 280  * \note When this function returns, the regs pointer and the data it points to
 281  * can be discarded
 282  * \param kvm Pointer to the current kvm_context
 283  * \param vcpu Which virtual CPU should get dumped
 284  * \param regs Pointer to a kvm_sregs which will be populated with the VCPUs
 285  * registers values
 286  * \return 0 on success
 287  */
 288 int kvm_set_sregs(CPUState *env, struct kvm_sregs *regs);
 289
 290 #ifdef KVM_CAP_MP_STATE
 291 /*!
 292  *  * \brief Read VCPU MP state
 293  *
 294  */
 295 int kvm_get_mpstate(CPUState *env, struct kvm_mp_state *mp_state);
 296
 297 /*!
 298  *  * \brief Write VCPU MP state
 299  *
 300  */
 301 int kvm_set_mpstate(CPUState *env, struct kvm_mp_state *mp_state);
 302 #endif
 303
 304 /*!
 305  * \brief Simulate an external vectored interrupt
 306  *
 307  * This allows you to simulate an external vectored interrupt.
 308  *
 309  * \param kvm Pointer to the current kvm_context
 310  * \param vcpu Which virtual CPU should get dumped
 311  * \param irq Vector number
 312  * \return 0 on success
 313  */
 314 int kvm_inject_irq(CPUState *env, unsigned irq);
 315
 316 #if defined(__i386__) || defined(__x86_64__)
 317 /*!
 318  * \brief Setup a vcpu's cpuid instruction emulation
 319  *
 320  * Set up a table of cpuid function to cpuid outputs.\n
 321  *
 322  * \param kvm Pointer to the current kvm_context
 323  * \param vcpu Which virtual CPU should be initialized
 324  * \param nent number of entries to be installed
 325  * \param entries cpuid function entries table
 326  * \return 0 on success, or -errno on error
 327  */
 328 int kvm_setup_cpuid(CPUState *env, int nent,
 329                     struct kvm_cpuid_entry *entries);
 330
 331 /*!
 332  * \brief Setup a vcpu's cpuid instruction emulation
 333  *
 334  * Set up a table of cpuid function to cpuid outputs.
 335  * This call replaces the older kvm_setup_cpuid interface by adding a few
 336  * parameters to support cpuid functions that have sub-leaf values.
 337  *
 338  * \param kvm Pointer to the current kvm_context
 339  * \param vcpu Which virtual CPU should be initialized
 340  * \param nent number of entries to be installed
 341  * \param entries cpuid function entries table
 342  * \return 0 on success, or -errno on error
 343  */
 344 int kvm_setup_cpuid2(CPUState *env, int nent,
 345                      struct kvm_cpuid_entry2 *entries);
 346
 347 /*!
 348  * \brief Setting the number of shadow pages to be allocated to the vm
 349  *
 350  * \param kvm pointer to kvm_context
 351  * \param nrshadow_pages number of pages to be allocated
 352  */
 353 int kvm_set_shadow_pages(kvm_context_t kvm, unsigned int nrshadow_pages);
 354
 355 /*!
 356  * \brief Getting the number of shadow pages that are allocated to the vm
 357  *
 358  * \param kvm pointer to kvm_context
 359  * \param nrshadow_pages number of pages to be allocated
 360  */
 361 int kvm_get_shadow_pages(kvm_context_t kvm, unsigned int *nrshadow_pages);
 362
 363 #endif
 364
 365 /*!
 366  * \brief Dump VCPU registers
 367  *
 368  * This dumps some of the information that KVM has about a virtual CPU, namely:
 369  * - GP Registers
 370  *
 371  * A much more verbose version of this is available as kvm_dump_vcpu()
 372  *
 373  * \param kvm Pointer to the current kvm_context
 374  * \param vcpu Which virtual CPU should get dumped
 375  * \return 0 on success
 376  */
 377 void kvm_show_regs(CPUState *env);
 378
 379
 380 void *kvm_create_phys_mem(kvm_context_t, unsigned long phys_start,
 381                           unsigned long len, int log, int writable);
 382 void kvm_destroy_phys_mem(kvm_context_t, unsigned long phys_start,
 383                           unsigned long len);
 384 void kvm_unregister_memory_area(kvm_context_t, uint64_t phys_start,
 385                                 unsigned long len);
 386
 387 int kvm_is_containing_region(kvm_context_t kvm, unsigned long phys_start,
 388                              unsigned long size);
 389 int kvm_register_phys_mem(kvm_context_t kvm, unsigned long phys_start,
 390                           void *userspace_addr, unsigned long len, int log);
 391 int kvm_get_dirty_pages(kvm_context_t, unsigned long phys_addr, void *buf);
 392 int kvm_get_dirty_pages_range(kvm_context_t kvm, unsigned long phys_addr,
 393                               unsigned long end_addr, void *opaque,
 394                               int (*cb)(unsigned long start,
 395                                         unsigned long len, void *bitmap,
 396                                         void *opaque));
 397 int kvm_register_coalesced_mmio(kvm_context_t kvm, uint64_t addr,
 398                                 uint32_t size);
 399 int kvm_unregister_coalesced_mmio(kvm_context_t kvm, uint64_t addr,
 400                                   uint32_t size);
 401
 402 /*!
 403  * \brief Create a memory alias
 404  *
 405  * Aliases a portion of physical memory to another portion.  If the guest
 406  * accesses the alias region, it will behave exactly as if it accessed
 407  * the target memory.
 408  */
 409 int kvm_create_memory_alias(kvm_context_t, uint64_t phys_start, uint64_t len,
 410                             uint64_t target_phys);
 411
 412 /*!
 413  * \brief Destroy a memory alias
 414  *
 415  * Removes an alias created with kvm_create_memory_alias().
 416  */
 417 int kvm_destroy_memory_alias(kvm_context_t, uint64_t phys_start);
 418
 419 /*!
 420  * \brief Get a bitmap of guest ram pages which are allocated to the guest.
 421  *
 422  * \param kvm Pointer to the current kvm_context
 423  * \param phys_addr Memory slot phys addr
 424  * \param bitmap Long aligned address of a big enough bitmap (one bit per page)
 425  */
 426 int kvm_get_mem_map(kvm_context_t kvm, unsigned long phys_addr, void *bitmap);
 427 int kvm_get_mem_map_range(kvm_context_t kvm, unsigned long phys_addr,
 428                           unsigned long len, void *buf, void *opaque,
 429                           int (*cb)(unsigned long start,
 430                                     unsigned long len, void *bitmap,
 431                                     void *opaque));
 432 int kvm_set_irq_level(kvm_context_t kvm, int irq, int level, int *status);
 433
 434 int kvm_dirty_pages_log_enable_slot(kvm_context_t kvm, uint64_t phys_start,
 435                                     uint64_t len);
 436 int kvm_dirty_pages_log_disable_slot(kvm_context_t kvm, uint64_t phys_start,
 437                                      uint64_t len);
 438 /*!
 439  * \brief Enable dirty-pages-logging for all memory regions
 440  *
 441  * \param kvm Pointer to the current kvm_context
 442  */
 443 int kvm_dirty_pages_log_enable_all(kvm_context_t kvm);
 444
 445 /*!
 446  * \brief Disable dirty-page-logging for some memory regions
 447  *
 448  * Disable dirty-pages-logging for those memory regions that were
 449  * created with dirty-page-logging disabled.
 450  *
 451  * \param kvm Pointer to the current kvm_context
 452  */
 453 int kvm_dirty_pages_log_reset(kvm_context_t kvm);
 454
 455 #ifdef KVM_CAP_IRQCHIP
 456 /*!
 457  * \brief Dump in kernel IRQCHIP contents
 458  *
 459  * Dump one of the in kernel irq chip devices, including PIC (master/slave)
 460  * and IOAPIC into a kvm_irqchip structure
 461  *
 462  * \param kvm Pointer to the current kvm_context
 463  * \param chip The irq chip device to be dumped
 464  */
 465 int kvm_get_irqchip(kvm_context_t kvm, struct kvm_irqchip *chip);
 466
 467 /*!
 468  * \brief Set in kernel IRQCHIP contents
 469  *
 470  * Write one of the in kernel irq chip devices, including PIC (master/slave)
 471  * and IOAPIC
 472  *
 473  *
 474  * \param kvm Pointer to the current kvm_context
 475  * \param chip THe irq chip device to be written
 476  */
 477 int kvm_set_irqchip(kvm_context_t kvm, struct kvm_irqchip *chip);
 478
 479 #if defined(__i386__) || defined(__x86_64__)
 480 /*!
 481  * \brief Get in kernel local APIC for vcpu
 482  *
 483  * Save the local apic state including the timer of a virtual CPU
 484  *
 485  * \param kvm Pointer to the current kvm_context
 486  * \param vcpu Which virtual CPU should be accessed
 487  * \param s Local apic state of the specific virtual CPU
 488  */
 489 int kvm_get_lapic(CPUState *env, struct kvm_lapic_state *s);
 490
 491 /*!
 492  * \brief Set in kernel local APIC for vcpu
 493  *
 494  * Restore the local apic state including the timer of a virtual CPU
 495  *
 496  * \param kvm Pointer to the current kvm_context
 497  * \param vcpu Which virtual CPU should be accessed
 498  * \param s Local apic state of the specific virtual CPU
 499  */
 500 int kvm_set_lapic(CPUState *env, struct kvm_lapic_state *s);
 501
 502 #endif
 503
 504 /*!
 505  * \brief Simulate an NMI
 506  *
 507  * This allows you to simulate a non-maskable interrupt.
 508  *
 509  * \param kvm Pointer to the current kvm_context
 510  * \param vcpu Which virtual CPU should get dumped
 511  * \return 0 on success
 512  */
 513 int kvm_inject_nmi(CPUState *env);
 514
 515 #endif
 516
 517 /*!
 518  * \brief Simulate an x86 MCE
 519  *
 520  * This allows you to simulate a x86 MCE.
 521  *
 522  * \param cenv Which virtual CPU should get MCE injected
 523  * \param bank Bank number
 524  * \param status MSR_MCI_STATUS
 525  * \param mcg_status MSR_MCG_STATUS
 526  * \param addr MSR_MCI_ADDR
 527  * \param misc MSR_MCI_MISC
 528  * \param abort_on_error abort on error
 529  */
 530 void kvm_inject_x86_mce(CPUState *cenv, int bank, uint64_t status,
 531                         uint64_t mcg_status, uint64_t addr, uint64_t misc,
 532                         int abort_on_error);
 533
 534 /*!
 535  * \brief Initialize coalesced MMIO
 536  *
 537  * Check for coalesced MMIO capability and store in context
 538  *
 539  * \param kvm Pointer to the current kvm_context
 540  */
 541 int kvm_init_coalesced_mmio(kvm_context_t kvm);
 542
 543 #ifdef KVM_CAP_PIT
 544
 545 #if defined(__i386__) || defined(__x86_64__)
 546 /*!
 547  * \brief Get in kernel PIT of the virtual domain
 548  *
 549  * Save the PIT state.
 550  *
 551  * \param kvm Pointer to the current kvm_context
 552  * \param s PIT state of the virtual domain
 553  */
 554 int kvm_get_pit(kvm_context_t kvm, struct kvm_pit_state *s);
 555
 556 /*!
 557  * \brief Set in kernel PIT of the virtual domain
 558  *
 559  * Restore the PIT state.
 560  * Timer would be retriggerred after restored.
 561  *
 562  * \param kvm Pointer to the current kvm_context
 563  * \param s PIT state of the virtual domain
 564  */
 565 int kvm_set_pit(kvm_context_t kvm, struct kvm_pit_state *s);
 566
 567 int kvm_reinject_control(kvm_context_t kvm, int pit_reinject);
 568
 569 #ifdef KVM_CAP_PIT_STATE2
 570 /*!
 571  * \brief Check for kvm support of kvm_pit_state2
 572  *
 573  * \param kvm Pointer to the current kvm_context
 574  * \return 0 on success
 575  */
 576 int kvm_has_pit_state2(kvm_context_t kvm);
 577
 578 /*!
 579  * \brief Set in kernel PIT state2 of the virtual domain
 580  *
 581  *
 582  * \param kvm Pointer to the current kvm_context
 583  * \param ps2 PIT state2 of the virtual domain
 584  * \return 0 on success
 585  */
 586 int kvm_set_pit2(kvm_context_t kvm, struct kvm_pit_state2 *ps2);
 587
 588 /*!
 589  * \brief Get in kernel PIT state2 of the virtual domain
 590  *
 591  *
 592  * \param kvm Pointer to the current kvm_context
 593  * \param ps2 PIT state2 of the virtual domain
 594  * \return 0 on success
 595  */
 596 int kvm_get_pit2(kvm_context_t kvm, struct kvm_pit_state2 *ps2);
 597
 598 #endif
 599 #endif
 600 #endif
 601
 602 #ifdef KVM_CAP_VAPIC
 603
 604 int kvm_enable_vapic(CPUState *env, uint64_t vapic);
 605
 606 #endif
 607
 608 #if defined(__s390__)
 609 int kvm_s390_initial_reset(kvm_context_t kvm, int slot);
 610 int kvm_s390_interrupt(kvm_context_t kvm, int slot,
 611                        struct kvm_s390_interrupt *kvmint);
 612 int kvm_s390_set_initial_psw(kvm_context_t kvm, int slot, psw_t psw);
 613 int kvm_s390_store_status(kvm_context_t kvm, int slot, unsigned long addr);
 614 #endif
 615
 616 #ifdef KVM_CAP_DEVICE_ASSIGNMENT
 617 /*!
 618  * \brief Notifies host kernel about a PCI device to be assigned to a guest
 619  *
 620  * Used for PCI device assignment, this function notifies the host
 621  * kernel about the assigning of the physical PCI device to a guest.
 622  *
 623  * \param kvm Pointer to the current kvm_context
 624  * \param assigned_dev Parameters, like bus, devfn number, etc
 625  */
 626 int kvm_assign_pci_device(kvm_context_t kvm,
 627                           struct kvm_assigned_pci_dev *assigned_dev);
 628
 629 /*!
 630  * \brief Assign IRQ for an assigned device
 631  *
 632  * Used for PCI device assignment, this function assigns IRQ numbers for
 633  * an physical device and guest IRQ handling.
 634  *
 635  * \param kvm Pointer to the current kvm_context
 636  * \param assigned_irq Parameters, like dev id, host irq, guest irq, etc
 637  */
 638 int kvm_assign_irq(kvm_context_t kvm, struct kvm_assigned_irq *assigned_irq);
 639
 640 #ifdef KVM_CAP_ASSIGN_DEV_IRQ
 641 /*!
 642  * \brief Deassign IRQ for an assigned device
 643  *
 644  * Used for PCI device assignment, this function deassigns IRQ numbers
 645  * for an assigned device.
 646  *
 647  * \param kvm Pointer to the current kvm_context
 648  * \param assigned_irq Parameters, like dev id, host irq, guest irq, etc
 649  */
 650 int kvm_deassign_irq(kvm_context_t kvm, struct kvm_assigned_irq *assigned_irq);
 651 #endif
 652 #endif
 653
 654 /*!
 655  * \brief Determines whether destroying memory regions is allowed
 656  *
 657  * KVM before 2.6.29 had a bug when destroying memory regions.
 658  *
 659  * \param kvm Pointer to the current kvm_context
 660  */
 661 int kvm_destroy_memory_region_works(kvm_context_t kvm);
 662
 663 #ifdef KVM_CAP_DEVICE_DEASSIGNMENT
 664 /*!
 665  * \brief Notifies host kernel about a PCI device to be deassigned from a guest
 666  *
 667  * Used for hot remove PCI device, this function notifies the host
 668  * kernel about the deassigning of the physical PCI device from a guest.
 669  *
 670  * \param kvm Pointer to the current kvm_context
 671  * \param assigned_dev Parameters, like bus, devfn number, etc
 672  */
 673 int kvm_deassign_pci_device(kvm_context_t kvm,
 674                             struct kvm_assigned_pci_dev *assigned_dev);
 675 #endif
 676
 677 /*!
 678  * \brief Checks whether the generic irq routing capability is present
 679  *
 680  * Checks whether kvm can reroute interrupts among the various interrupt
 681  * controllers.
 682  *
 683  * \param kvm Pointer to the current kvm_context
 684  */
 685 int kvm_has_gsi_routing(kvm_context_t kvm);
 686
 687 /*!
 688  * \brief Determines the number of gsis that can be routed
 689  *
 690  * Returns the number of distinct gsis that can be routed by kvm.  This is
 691  * also the number of distinct routes (if a gsi has two routes, than another
 692  * gsi cannot be used...)
 693  *
 694  * \param kvm Pointer to the current kvm_context
 695  */
 696 int kvm_get_gsi_count(kvm_context_t kvm);
 697
 698 /*!
 699  * \brief Clears the temporary irq routing table
 700  *
 701  * Clears the temporary irq routing table.  Nothing is committed to the
 702  * running VM.
 703  *
 704  * \param kvm Pointer to the current kvm_context
 705  */
 706 int kvm_clear_gsi_routes(kvm_context_t kvm);
 707
 708 /*!
 709  * \brief Adds an irq route to the temporary irq routing table
 710  *
 711  * Adds an irq route to the temporary irq routing table.  Nothing is
 712  * committed to the running VM.
 713  *
 714  * \param kvm Pointer to the current kvm_context
 715  */
 716 int kvm_add_irq_route(kvm_context_t kvm, int gsi, int irqchip, int pin);
 717
 718 /*!
 719  * \brief Removes an irq route from the temporary irq routing table
 720  *
 721  * Adds an irq route to the temporary irq routing table.  Nothing is
 722  * committed to the running VM.
 723  *
 724  * \param kvm Pointer to the current kvm_context
 725  */
 726 int kvm_del_irq_route(kvm_context_t kvm, int gsi, int irqchip, int pin);
 727
 728 struct kvm_irq_routing_entry;
 729 /*!
 730  * \brief Adds a routing entry to the temporary irq routing table
 731  *
 732  * Adds a filled routing entry to the temporary irq routing table. Nothing is
 733  * committed to the running VM.
 734  *
 735  * \param kvm Pointer to the current kvm_context
 736  */
 737 int kvm_add_routing_entry(kvm_context_t kvm,
 738                           struct kvm_irq_routing_entry *entry);
 739
 740 /*!
 741  * \brief Removes a routing from the temporary irq routing table
 742  *
 743  * Remove a routing to the temporary irq routing table.  Nothing is
 744  * committed to the running VM.
 745  *
 746  * \param kvm Pointer to the current kvm_context
 747  */
 748 int kvm_del_routing_entry(kvm_context_t kvm,
 749                           struct kvm_irq_routing_entry *entry);
 750
 751 /*!
 752  * \brief Updates a routing in the temporary irq routing table
 753  *
 754  * Update a routing in the temporary irq routing table
 755  * with a new value. entry type and GSI can not be changed.
 756  * Nothing is committed to the running VM.
 757  *
 758  * \param kvm Pointer to the current kvm_context
 759  */
 760 int kvm_update_routing_entry(kvm_context_t kvm,
 761                              struct kvm_irq_routing_entry *entry,
 762                              struct kvm_irq_routing_entry *newentry);
 763
 764 /*!
 765  * \brief Commit the temporary irq routing table
 766  *
 767  * Commit the temporary irq routing table to the running VM.
 768  *
 769  * \param kvm Pointer to the current kvm_context
 770  */
 771 int kvm_commit_irq_routes(kvm_context_t kvm);
 772
 773 /*!
 774  * \brief Get unused GSI number for irq routing table
 775  *
 776  * Get unused GSI number for irq routing table
 777  *
 778  * \param kvm Pointer to the current kvm_context
 779  */
 780 int kvm_get_irq_route_gsi(kvm_context_t kvm);
 781
 782 /*!
 783  * \brief Create a file descriptor for injecting interrupts
 784  *
 785  * Creates an eventfd based file-descriptor that maps to a specific GSI
 786  * in the guest.  eventfd compliant signaling (write() from userspace, or
 787  * eventfd_signal() from kernelspace) will cause the GSI to inject
 788  * itself into the guest at the next available window.
 789  *
 790  * \param kvm Pointer to the current kvm_context
 791  * \param gsi GSI to assign to this fd
 792  * \param flags reserved, must be zero
 793  */
 794 int kvm_irqfd(kvm_context_t kvm, int gsi, int flags);
 795
 796 #ifdef KVM_CAP_DEVICE_MSIX
 797 int kvm_assign_set_msix_nr(kvm_context_t kvm,
 798                            struct kvm_assigned_msix_nr *msix_nr);
 799 int kvm_assign_set_msix_entry(kvm_context_t kvm,
 800                               struct kvm_assigned_msix_entry *entry);
 801 #endif
 802
 803 #else                           /* !CONFIG_KVM */
 804
 805 typedef struct kvm_context *kvm_context_t;
 806 typedef struct kvm_vcpu_context *kvm_vcpu_context_t;
 807
 808 struct kvm_pit_state {
 809 };
 810
 811 static inline int kvm_init(int smp_cpus)
 812 {
 813     return 0;
 814 }
 815
 816 static inline void kvm_inject_x86_mce(CPUState *cenv, int bank,
 817                                       uint64_t status, uint64_t mcg_status,
 818                                       uint64_t addr, uint64_t misc,
 819                                       int abort_on_error)
 820 {
 821     if (abort_on_error)
 822         abort();
 823 }
 824
 825 #endif                          /* !CONFIG_KVM */
 826
 827
 828 int kvm_main_loop(void);
 829 int kvm_init_ap(void);
 830 int kvm_vcpu_inited(CPUState *env);
 831 void kvm_save_lapic(CPUState *env);
 832 void kvm_load_lapic(CPUState *env);
 833
 834 void kvm_hpet_enable_kpit(void);
 835 void kvm_hpet_disable_kpit(void);
 836 int kvm_set_irq(int irq, int level, int *status);
 837
 838 int kvm_physical_memory_set_dirty_tracking(int enable);
 839
 840 void qemu_kvm_call_with_env(void (*func)(void *), void *data, CPUState *env);
 841 void qemu_kvm_cpuid_on_env(CPUState *env);
 842 void kvm_inject_interrupt(CPUState *env, int mask);
 843 void kvm_update_after_sipi(CPUState *env);
 844 void kvm_update_interrupt_request(CPUState *env);
 845 void kvm_set_phys_mem(target_phys_addr_t start_addr, ram_addr_t size,
 846                       ram_addr_t phys_offset);
 847 void *kvm_cpu_create_phys_mem(target_phys_addr_t start_addr, unsigned long size,
 848                               int log, int writable);
 849
 850 void kvm_cpu_destroy_phys_mem(target_phys_addr_t start_addr,
 851                               unsigned long size);
 852 void kvm_qemu_log_memory(target_phys_addr_t start, target_phys_addr_t size,
 853                          int log);
 854 int kvm_qemu_create_memory_alias(uint64_t phys_start, uint64_t len,
 855                                  uint64_t target_phys);
 856 int kvm_qemu_destroy_memory_alias(uint64_t phys_start);
 857
 858 int kvm_arch_qemu_create_context(void);
 859
 860 void kvm_arch_save_regs(CPUState *env);
 861 void kvm_arch_load_regs(CPUState *env, int level);
 862 int kvm_arch_has_work(CPUState *env);
 863 void kvm_arch_process_irqchip_events(CPUState *env);
 864 int kvm_arch_try_push_interrupts(void *opaque);
 865 void kvm_arch_push_nmi(void *opaque);
 866 void kvm_arch_cpu_reset(CPUState *env);
 867 int kvm_set_boot_cpu_id(uint32_t id);
 868
 869 void qemu_kvm_aio_wait_start(void);
 870 void qemu_kvm_aio_wait(void);
 871 void qemu_kvm_aio_wait_end(void);
 872
 873 void qemu_kvm_notify_work(void);
 874
 875 void kvm_tpr_access_report(CPUState *env, uint64_t rip, int is_write);
 876
 877 int kvm_arch_init_irq_routing(void);
 878
 879 int kvm_mmio_read(void *opaque, uint64_t addr, uint8_t * data, int len);
 880 int kvm_mmio_write(void *opaque, uint64_t addr, uint8_t * data, int len);
 881
 882 #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
 883 struct ioperm_data;
 884
 885 void kvm_ioperm(CPUState *env, void *data);
 886 void kvm_add_ioperm_data(struct ioperm_data *data);
 887 void kvm_remove_ioperm_data(unsigned long start_port, unsigned long num);
 888 void kvm_arch_do_ioperm(void *_data);
 889 #endif
 890
 891 #define ALIGN(x, y)  (((x)+(y)-1) & ~((y)-1))
 892 #define BITMAP_SIZE(m) (ALIGN(((m)>>TARGET_PAGE_BITS), HOST_LONG_BITS) / 8)
 893
 894 #ifdef CONFIG_KVM
 895 #include "qemu-queue.h"
 896
 897 extern int kvm_irqchip;
 898 extern int kvm_pit;
 899 extern int kvm_pit_reinject;
 900 extern int kvm_nested;
 901 extern kvm_context_t kvm_context;
 902
 903 struct ioperm_data {
 904     unsigned long start_port;
 905     unsigned long num;
 906     int turn_on;
 907     QLIST_ENTRY(ioperm_data) entries;
 908 };
 909
 910 void qemu_kvm_cpu_stop(CPUState *env);
 911 int kvm_arch_halt(CPUState *env);
 912 int handle_tpr_access(void *opaque, CPUState *env, uint64_t rip,
 913                       int is_write);
 914
 915 #define qemu_kvm_has_gsi_routing() kvm_has_gsi_routing(kvm_context)
 916 #ifdef TARGET_I386
 917 #define qemu_kvm_has_pit_state2() kvm_has_pit_state2(kvm_context)
 918 #endif
 919 #else
 920 #define kvm_nested 0
 921 #define qemu_kvm_has_gsi_routing() (0)
 922 #ifdef TARGET_I386
 923 #define qemu_kvm_has_pit_state2() (0)
 924 #endif
 925 #define qemu_kvm_cpu_stop(env) do {} while(0)
 926 #endif
 927
 928 void kvm_mutex_unlock(void);
 929 void kvm_mutex_lock(void);
 930
 931 int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
 932                                    target_phys_addr_t end_addr);
 933
 934
 935 static inline int kvm_sync_vcpus(void)
 936 {
 937     return 0;
 938 }
 939
 940 static inline int kvm_set_migration_log(int enable)
 941 {
 942     return kvm_physical_memory_set_dirty_tracking(enable);
 943 }
 944
 945
 946 #ifdef CONFIG_KVM
 947
 948 typedef struct KVMSlot {
 949     target_phys_addr_t start_addr;
 950     ram_addr_t memory_size;
 951     ram_addr_t phys_offset;
 952     int slot;
 953     int flags;
 954 } KVMSlot;
 955
 956 typedef struct kvm_dirty_log KVMDirtyLog;
 957
 958 struct KVMState {
 959     KVMSlot slots[32];
 960     int fd;
 961     int vmfd;
 962     int coalesced_mmio;
 963 #ifdef KVM_CAP_COALESCED_MMIO
 964     struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
 965 #endif
 966     int broken_set_mem_region;
 967     int migration_log;
 968     int vcpu_events;
 969     int robust_singlestep;
 970     int debugregs;
 971 #ifdef KVM_CAP_SET_GUEST_DEBUG
 972     QTAILQ_HEAD(, kvm_sw_breakpoint) kvm_sw_breakpoints;
 973 #endif
 974     int irqchip_in_kernel;
 975     int pit_in_kernel;
 976
 977     struct kvm_context kvm_context;
 978 };
 979
 980 extern struct KVMState *kvm_state;
 981
 982 int kvm_tpr_enable_vapic(CPUState *env);
 983
 984 unsigned long kvm_get_thread_id(void);
 985 int kvm_cpu_is_stopped(CPUState *env);
 986
 987 #endif
 988
 989 #endif