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
 385 int kvm_is_containing_region(kvm_context_t kvm, unsigned long phys_start,
 386                              unsigned long size);
 387 int kvm_register_phys_mem(kvm_context_t kvm, unsigned long phys_start,
 388                           void *userspace_addr, unsigned long len, int log);
 389 int kvm_get_dirty_pages_range(kvm_context_t kvm, unsigned long phys_addr,
 390                               unsigned long end_addr, void *opaque,
 391                               int (*cb)(unsigned long start,
 392                                         unsigned long len, void *bitmap,
 393                                         void *opaque));
 394 int kvm_register_coalesced_mmio(kvm_context_t kvm, uint64_t addr,
 395                                 uint32_t size);
 396 int kvm_unregister_coalesced_mmio(kvm_context_t kvm, uint64_t addr,
 397                                   uint32_t size);
 398
 399 /*!
 400  * \brief Get a bitmap of guest ram pages which are allocated to the guest.
 401  *
 402  * \param kvm Pointer to the current kvm_context
 403  * \param phys_addr Memory slot phys addr
 404  * \param bitmap Long aligned address of a big enough bitmap (one bit per page)
 405  */
 406 int kvm_get_mem_map(kvm_context_t kvm, unsigned long phys_addr, void *bitmap);
 407 int kvm_get_mem_map_range(kvm_context_t kvm, unsigned long phys_addr,
 408                           unsigned long len, void *buf, void *opaque,
 409                           int (*cb)(unsigned long start,
 410                                     unsigned long len, void *bitmap,
 411                                     void *opaque));
 412 int kvm_set_irq_level(kvm_context_t kvm, int irq, int level, int *status);
 413
 414 int kvm_dirty_pages_log_enable_slot(kvm_context_t kvm, uint64_t phys_start,
 415                                     uint64_t len);
 416 int kvm_dirty_pages_log_disable_slot(kvm_context_t kvm, uint64_t phys_start,
 417                                      uint64_t len);
 418 /*!
 419  * \brief Enable dirty-pages-logging for all memory regions
 420  *
 421  * \param kvm Pointer to the current kvm_context
 422  */
 423 int kvm_dirty_pages_log_enable_all(kvm_context_t kvm);
 424
 425 /*!
 426  * \brief Disable dirty-page-logging for some memory regions
 427  *
 428  * Disable dirty-pages-logging for those memory regions that were
 429  * created with dirty-page-logging disabled.
 430  *
 431  * \param kvm Pointer to the current kvm_context
 432  */
 433 int kvm_dirty_pages_log_reset(kvm_context_t kvm);
 434
 435 #ifdef KVM_CAP_IRQCHIP
 436 /*!
 437  * \brief Dump in kernel IRQCHIP contents
 438  *
 439  * Dump one of the in kernel irq chip devices, including PIC (master/slave)
 440  * and IOAPIC into a kvm_irqchip structure
 441  *
 442  * \param kvm Pointer to the current kvm_context
 443  * \param chip The irq chip device to be dumped
 444  */
 445 int kvm_get_irqchip(kvm_context_t kvm, struct kvm_irqchip *chip);
 446
 447 /*!
 448  * \brief Set in kernel IRQCHIP contents
 449  *
 450  * Write one of the in kernel irq chip devices, including PIC (master/slave)
 451  * and IOAPIC
 452  *
 453  *
 454  * \param kvm Pointer to the current kvm_context
 455  * \param chip THe irq chip device to be written
 456  */
 457 int kvm_set_irqchip(kvm_context_t kvm, struct kvm_irqchip *chip);
 458
 459 #if defined(__i386__) || defined(__x86_64__)
 460 /*!
 461  * \brief Get in kernel local APIC for vcpu
 462  *
 463  * Save the local apic state including the timer of a virtual CPU
 464  *
 465  * \param kvm Pointer to the current kvm_context
 466  * \param vcpu Which virtual CPU should be accessed
 467  * \param s Local apic state of the specific virtual CPU
 468  */
 469 int kvm_get_lapic(CPUState *env, struct kvm_lapic_state *s);
 470
 471 /*!
 472  * \brief Set in kernel local APIC for vcpu
 473  *
 474  * Restore the local apic state including the timer of a virtual CPU
 475  *
 476  * \param kvm Pointer to the current kvm_context
 477  * \param vcpu Which virtual CPU should be accessed
 478  * \param s Local apic state of the specific virtual CPU
 479  */
 480 int kvm_set_lapic(CPUState *env, struct kvm_lapic_state *s);
 481
 482 #endif
 483
 484 /*!
 485  * \brief Simulate an NMI
 486  *
 487  * This allows you to simulate a non-maskable interrupt.
 488  *
 489  * \param kvm Pointer to the current kvm_context
 490  * \param vcpu Which virtual CPU should get dumped
 491  * \return 0 on success
 492  */
 493 int kvm_inject_nmi(CPUState *env);
 494
 495 #endif
 496
 497 /*!
 498  * \brief Simulate an x86 MCE
 499  *
 500  * This allows you to simulate a x86 MCE.
 501  *
 502  * \param cenv Which virtual CPU should get MCE injected
 503  * \param bank Bank number
 504  * \param status MSR_MCI_STATUS
 505  * \param mcg_status MSR_MCG_STATUS
 506  * \param addr MSR_MCI_ADDR
 507  * \param misc MSR_MCI_MISC
 508  * \param abort_on_error abort on error
 509  */
 510 void kvm_inject_x86_mce(CPUState *cenv, int bank, uint64_t status,
 511                         uint64_t mcg_status, uint64_t addr, uint64_t misc,
 512                         int abort_on_error);
 513
 514 /*!
 515  * \brief Initialize coalesced MMIO
 516  *
 517  * Check for coalesced MMIO capability and store in context
 518  *
 519  * \param kvm Pointer to the current kvm_context
 520  */
 521 int kvm_init_coalesced_mmio(kvm_context_t kvm);
 522
 523 #ifdef KVM_CAP_PIT
 524
 525 #if defined(__i386__) || defined(__x86_64__)
 526 /*!
 527  * \brief Get in kernel PIT of the virtual domain
 528  *
 529  * Save the PIT state.
 530  *
 531  * \param kvm Pointer to the current kvm_context
 532  * \param s PIT state of the virtual domain
 533  */
 534 int kvm_get_pit(kvm_context_t kvm, struct kvm_pit_state *s);
 535
 536 /*!
 537  * \brief Set in kernel PIT of the virtual domain
 538  *
 539  * Restore the PIT state.
 540  * Timer would be retriggerred after restored.
 541  *
 542  * \param kvm Pointer to the current kvm_context
 543  * \param s PIT state of the virtual domain
 544  */
 545 int kvm_set_pit(kvm_context_t kvm, struct kvm_pit_state *s);
 546
 547 int kvm_reinject_control(kvm_context_t kvm, int pit_reinject);
 548
 549 #ifdef KVM_CAP_PIT_STATE2
 550 /*!
 551  * \brief Check for kvm support of kvm_pit_state2
 552  *
 553  * \param kvm Pointer to the current kvm_context
 554  * \return 0 on success
 555  */
 556 int kvm_has_pit_state2(kvm_context_t kvm);
 557
 558 /*!
 559  * \brief Set in kernel PIT state2 of the virtual domain
 560  *
 561  *
 562  * \param kvm Pointer to the current kvm_context
 563  * \param ps2 PIT state2 of the virtual domain
 564  * \return 0 on success
 565  */
 566 int kvm_set_pit2(kvm_context_t kvm, struct kvm_pit_state2 *ps2);
 567
 568 /*!
 569  * \brief Get in kernel PIT state2 of the virtual domain
 570  *
 571  *
 572  * \param kvm Pointer to the current kvm_context
 573  * \param ps2 PIT state2 of the virtual domain
 574  * \return 0 on success
 575  */
 576 int kvm_get_pit2(kvm_context_t kvm, struct kvm_pit_state2 *ps2);
 577
 578 #endif
 579 #endif
 580 #endif
 581
 582 #ifdef KVM_CAP_VAPIC
 583
 584 int kvm_enable_vapic(CPUState *env, uint64_t vapic);
 585
 586 #endif
 587
 588 #if defined(__s390__)
 589 int kvm_s390_initial_reset(kvm_context_t kvm, int slot);
 590 int kvm_s390_interrupt(kvm_context_t kvm, int slot,
 591                        struct kvm_s390_interrupt *kvmint);
 592 int kvm_s390_set_initial_psw(kvm_context_t kvm, int slot, psw_t psw);
 593 int kvm_s390_store_status(kvm_context_t kvm, int slot, unsigned long addr);
 594 #endif
 595
 596 #ifdef KVM_CAP_DEVICE_ASSIGNMENT
 597 /*!
 598  * \brief Notifies host kernel about a PCI device to be assigned to a guest
 599  *
 600  * Used for PCI device assignment, this function notifies the host
 601  * kernel about the assigning of the physical PCI device to a guest.
 602  *
 603  * \param kvm Pointer to the current kvm_context
 604  * \param assigned_dev Parameters, like bus, devfn number, etc
 605  */
 606 int kvm_assign_pci_device(kvm_context_t kvm,
 607                           struct kvm_assigned_pci_dev *assigned_dev);
 608
 609 /*!
 610  * \brief Assign IRQ for an assigned device
 611  *
 612  * Used for PCI device assignment, this function assigns IRQ numbers for
 613  * an physical device and guest IRQ handling.
 614  *
 615  * \param kvm Pointer to the current kvm_context
 616  * \param assigned_irq Parameters, like dev id, host irq, guest irq, etc
 617  */
 618 int kvm_assign_irq(kvm_context_t kvm, struct kvm_assigned_irq *assigned_irq);
 619
 620 #ifdef KVM_CAP_ASSIGN_DEV_IRQ
 621 /*!
 622  * \brief Deassign IRQ for an assigned device
 623  *
 624  * Used for PCI device assignment, this function deassigns IRQ numbers
 625  * for an assigned device.
 626  *
 627  * \param kvm Pointer to the current kvm_context
 628  * \param assigned_irq Parameters, like dev id, host irq, guest irq, etc
 629  */
 630 int kvm_deassign_irq(kvm_context_t kvm, struct kvm_assigned_irq *assigned_irq);
 631 #endif
 632 #endif
 633
 634 #ifdef KVM_CAP_DEVICE_DEASSIGNMENT
 635 /*!
 636  * \brief Notifies host kernel about a PCI device to be deassigned from a guest
 637  *
 638  * Used for hot remove PCI device, this function notifies the host
 639  * kernel about the deassigning of the physical PCI device from a guest.
 640  *
 641  * \param kvm Pointer to the current kvm_context
 642  * \param assigned_dev Parameters, like bus, devfn number, etc
 643  */
 644 int kvm_deassign_pci_device(kvm_context_t kvm,
 645                             struct kvm_assigned_pci_dev *assigned_dev);
 646 #endif
 647
 648 /*!
 649  * \brief Checks whether the generic irq routing capability is present
 650  *
 651  * Checks whether kvm can reroute interrupts among the various interrupt
 652  * controllers.
 653  *
 654  * \param kvm Pointer to the current kvm_context
 655  */
 656 int kvm_has_gsi_routing(kvm_context_t kvm);
 657
 658 /*!
 659  * \brief Determines the number of gsis that can be routed
 660  *
 661  * Returns the number of distinct gsis that can be routed by kvm.  This is
 662  * also the number of distinct routes (if a gsi has two routes, than another
 663  * gsi cannot be used...)
 664  *
 665  * \param kvm Pointer to the current kvm_context
 666  */
 667 int kvm_get_gsi_count(kvm_context_t kvm);
 668
 669 /*!
 670  * \brief Clears the temporary irq routing table
 671  *
 672  * Clears the temporary irq routing table.  Nothing is committed to the
 673  * running VM.
 674  *
 675  * \param kvm Pointer to the current kvm_context
 676  */
 677 int kvm_clear_gsi_routes(kvm_context_t kvm);
 678
 679 /*!
 680  * \brief Adds an irq route to the temporary irq routing table
 681  *
 682  * Adds an irq route to the temporary irq routing table.  Nothing is
 683  * committed to the running VM.
 684  *
 685  * \param kvm Pointer to the current kvm_context
 686  */
 687 int kvm_add_irq_route(kvm_context_t kvm, int gsi, int irqchip, int pin);
 688
 689 /*!
 690  * \brief Removes an irq route from the temporary irq routing table
 691  *
 692  * Adds an irq route to the temporary irq routing table.  Nothing is
 693  * committed to the running VM.
 694  *
 695  * \param kvm Pointer to the current kvm_context
 696  */
 697 int kvm_del_irq_route(kvm_context_t kvm, int gsi, int irqchip, int pin);
 698
 699 struct kvm_irq_routing_entry;
 700 /*!
 701  * \brief Adds a routing entry to the temporary irq routing table
 702  *
 703  * Adds a filled routing entry to the temporary irq routing table. Nothing is
 704  * committed to the running VM.
 705  *
 706  * \param kvm Pointer to the current kvm_context
 707  */
 708 int kvm_add_routing_entry(kvm_context_t kvm,
 709                           struct kvm_irq_routing_entry *entry);
 710
 711 /*!
 712  * \brief Removes a routing from the temporary irq routing table
 713  *
 714  * Remove a routing to the temporary irq routing table.  Nothing is
 715  * committed to the running VM.
 716  *
 717  * \param kvm Pointer to the current kvm_context
 718  */
 719 int kvm_del_routing_entry(kvm_context_t kvm,
 720                           struct kvm_irq_routing_entry *entry);
 721
 722 /*!
 723  * \brief Updates a routing in the temporary irq routing table
 724  *
 725  * Update a routing in the temporary irq routing table
 726  * with a new value. entry type and GSI can not be changed.
 727  * Nothing is committed to the running VM.
 728  *
 729  * \param kvm Pointer to the current kvm_context
 730  */
 731 int kvm_update_routing_entry(kvm_context_t kvm,
 732                              struct kvm_irq_routing_entry *entry,
 733                              struct kvm_irq_routing_entry *newentry);
 734
 735 /*!
 736  * \brief Commit the temporary irq routing table
 737  *
 738  * Commit the temporary irq routing table to the running VM.
 739  *
 740  * \param kvm Pointer to the current kvm_context
 741  */
 742 int kvm_commit_irq_routes(kvm_context_t kvm);
 743
 744 /*!
 745  * \brief Get unused GSI number for irq routing table
 746  *
 747  * Get unused GSI number for irq routing table
 748  *
 749  * \param kvm Pointer to the current kvm_context
 750  */
 751 int kvm_get_irq_route_gsi(kvm_context_t kvm);
 752
 753 /*!
 754  * \brief Create a file descriptor for injecting interrupts
 755  *
 756  * Creates an eventfd based file-descriptor that maps to a specific GSI
 757  * in the guest.  eventfd compliant signaling (write() from userspace, or
 758  * eventfd_signal() from kernelspace) will cause the GSI to inject
 759  * itself into the guest at the next available window.
 760  *
 761  * \param kvm Pointer to the current kvm_context
 762  * \param gsi GSI to assign to this fd
 763  * \param flags reserved, must be zero
 764  */
 765 int kvm_irqfd(kvm_context_t kvm, int gsi, int flags);
 766
 767 #ifdef KVM_CAP_DEVICE_MSIX
 768 int kvm_assign_set_msix_nr(kvm_context_t kvm,
 769                            struct kvm_assigned_msix_nr *msix_nr);
 770 int kvm_assign_set_msix_entry(kvm_context_t kvm,
 771                               struct kvm_assigned_msix_entry *entry);
 772 #endif
 773
 774 #else                           /* !CONFIG_KVM */
 775
 776 typedef struct kvm_context *kvm_context_t;
 777 typedef struct kvm_vcpu_context *kvm_vcpu_context_t;
 778
 779 struct kvm_pit_state {
 780 };
 781
 782 static inline int kvm_init(int smp_cpus)
 783 {
 784     return 0;
 785 }
 786
 787 static inline void kvm_inject_x86_mce(CPUState *cenv, int bank,
 788                                       uint64_t status, uint64_t mcg_status,
 789                                       uint64_t addr, uint64_t misc,
 790                                       int abort_on_error)
 791 {
 792     if (abort_on_error)
 793         abort();
 794 }
 795
 796 #endif                          /* !CONFIG_KVM */
 797
 798
 799 int kvm_main_loop(void);
 800 int kvm_init_ap(void);
 801 int kvm_vcpu_inited(CPUState *env);
 802 void kvm_save_lapic(CPUState *env);
 803 void kvm_load_lapic(CPUState *env);
 804
 805 void kvm_hpet_enable_kpit(void);
 806 void kvm_hpet_disable_kpit(void);
 807 int kvm_set_irq(int irq, int level, int *status);
 808
 809 int kvm_physical_memory_set_dirty_tracking(int enable);
 810
 811 void qemu_kvm_call_with_env(void (*func)(void *), void *data, CPUState *env);
 812 void qemu_kvm_cpuid_on_env(CPUState *env);
 813 void kvm_inject_interrupt(CPUState *env, int mask);
 814 void kvm_update_after_sipi(CPUState *env);
 815 void kvm_update_interrupt_request(CPUState *env);
 816 void kvm_set_phys_mem(target_phys_addr_t start_addr, ram_addr_t size,
 817                       ram_addr_t phys_offset);
 818 void *kvm_cpu_create_phys_mem(target_phys_addr_t start_addr, unsigned long size,
 819                               int log, int writable);
 820
 821 void kvm_cpu_destroy_phys_mem(target_phys_addr_t start_addr,
 822                               unsigned long size);
 823 void kvm_qemu_log_memory(target_phys_addr_t start, target_phys_addr_t size,
 824                          int log);
 825 int kvm_qemu_create_memory_alias(uint64_t phys_start, uint64_t len,
 826                                  uint64_t target_phys);
 827 int kvm_qemu_destroy_memory_alias(uint64_t phys_start);
 828
 829 int kvm_arch_qemu_create_context(void);
 830
 831 void kvm_arch_save_regs(CPUState *env);
 832 void kvm_arch_load_regs(CPUState *env, int level);
 833 int kvm_arch_has_work(CPUState *env);
 834 void kvm_arch_process_irqchip_events(CPUState *env);
 835 int kvm_arch_try_push_interrupts(void *opaque);
 836 void kvm_arch_push_nmi(void *opaque);
 837 void kvm_arch_cpu_reset(CPUState *env);
 838 int kvm_set_boot_cpu_id(uint32_t id);
 839
 840 void qemu_kvm_aio_wait_start(void);
 841 void qemu_kvm_aio_wait(void);
 842 void qemu_kvm_aio_wait_end(void);
 843
 844 void qemu_kvm_notify_work(void);
 845
 846 void kvm_tpr_access_report(CPUState *env, uint64_t rip, int is_write);
 847
 848 int kvm_arch_init_irq_routing(void);
 849
 850 int kvm_mmio_read(void *opaque, uint64_t addr, uint8_t * data, int len);
 851 int kvm_mmio_write(void *opaque, uint64_t addr, uint8_t * data, int len);
 852
 853 #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
 854 struct ioperm_data;
 855
 856 void kvm_ioperm(CPUState *env, void *data);
 857 void kvm_add_ioperm_data(struct ioperm_data *data);
 858 void kvm_remove_ioperm_data(unsigned long start_port, unsigned long num);
 859 void kvm_arch_do_ioperm(void *_data);
 860 #endif
 861
 862 #define ALIGN(x, y)  (((x)+(y)-1) & ~((y)-1))
 863 #define BITMAP_SIZE(m) (ALIGN(((m)>>TARGET_PAGE_BITS), HOST_LONG_BITS) / 8)
 864
 865 #ifdef CONFIG_KVM
 866 #include "qemu-queue.h"
 867
 868 extern int kvm_irqchip;
 869 extern int kvm_pit;
 870 extern int kvm_pit_reinject;
 871 extern int kvm_nested;
 872 extern kvm_context_t kvm_context;
 873
 874 struct ioperm_data {
 875     unsigned long start_port;
 876     unsigned long num;
 877     int turn_on;
 878     QLIST_ENTRY(ioperm_data) entries;
 879 };
 880
 881 void qemu_kvm_cpu_stop(CPUState *env);
 882 int kvm_arch_halt(CPUState *env);
 883 int handle_tpr_access(void *opaque, CPUState *env, uint64_t rip,
 884                       int is_write);
 885
 886 #define qemu_kvm_has_gsi_routing() kvm_has_gsi_routing(kvm_context)
 887 #ifdef TARGET_I386
 888 #define qemu_kvm_has_pit_state2() kvm_has_pit_state2(kvm_context)
 889 #endif
 890 #else
 891 #define kvm_nested 0
 892 #define qemu_kvm_has_gsi_routing() (0)
 893 #ifdef TARGET_I386
 894 #define qemu_kvm_has_pit_state2() (0)
 895 #endif
 896 #define qemu_kvm_cpu_stop(env) do {} while(0)
 897 #endif
 898
 899 void kvm_mutex_unlock(void);
 900 void kvm_mutex_lock(void);
 901
 902 int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
 903                                    target_phys_addr_t end_addr);
 904
 905
 906 static inline int kvm_sync_vcpus(void)
 907 {
 908     return 0;
 909 }
 910
 911 static inline int kvm_set_migration_log(int enable)
 912 {
 913     return kvm_physical_memory_set_dirty_tracking(enable);
 914 }
 915
 916
 917 #ifdef CONFIG_KVM
 918
 919 typedef struct KVMSlot {
 920     target_phys_addr_t start_addr;
 921     ram_addr_t memory_size;
 922     ram_addr_t phys_offset;
 923     int slot;
 924     int flags;
 925 } KVMSlot;
 926
 927 typedef struct kvm_dirty_log KVMDirtyLog;
 928
 929 struct KVMState {
 930     KVMSlot slots[32];
 931     int fd;
 932     int vmfd;
 933     int coalesced_mmio;
 934 #ifdef KVM_CAP_COALESCED_MMIO
 935     struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
 936 #endif
 937     int broken_set_mem_region;
 938     int migration_log;
 939     int vcpu_events;
 940     int robust_singlestep;
 941     int debugregs;
 942 #ifdef KVM_CAP_SET_GUEST_DEBUG
 943     QTAILQ_HEAD(, kvm_sw_breakpoint) kvm_sw_breakpoints;
 944 #endif
 945     int irqchip_in_kernel;
 946     int pit_in_kernel;
 947
 948     struct kvm_context kvm_context;
 949 };
 950
 951 extern struct KVMState *kvm_state;
 952
 953 int kvm_tpr_enable_vapic(CPUState *env);
 954
 955 unsigned long kvm_get_thread_id(void);
 956 int kvm_cpu_is_stopped(CPUState *env);
 957
 958 #endif
 959
 960 #endif