1/* 2 * kvm_host.h: used for kvm module, and hold ia64-specific sections. 3 * 4 * Copyright (C) 2007, Intel Corporation. 5 * 6 * Xiantao Zhang <xiantao.zhang@intel.com> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms and conditions of the GNU General Public License, 10 * version 2, as published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15 * more details. 16 * 17 * You should have received a copy of the GNU General Public License along with 18 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple 19 * Place - Suite 330, Boston, MA 02111-1307 USA. 20 * 21 */ 22 23#ifndef __ASM_KVM_HOST_H 24#define __ASM_KVM_HOST_H 25 26#define KVM_MEMORY_SLOTS 32 27/* memory slots that does not exposed to userspace */ 28#define KVM_PRIVATE_MEM_SLOTS 4 29 30#define KVM_COALESCED_MMIO_PAGE_OFFSET 1 31 32/* define exit reasons from vmm to kvm*/ 33#define EXIT_REASON_VM_PANIC 0 34#define EXIT_REASON_MMIO_INSTRUCTION 1 35#define EXIT_REASON_PAL_CALL 2 36#define EXIT_REASON_SAL_CALL 3 37#define EXIT_REASON_SWITCH_RR6 4 38#define EXIT_REASON_VM_DESTROY 5 39#define EXIT_REASON_EXTERNAL_INTERRUPT 6 40#define EXIT_REASON_IPI 7 41#define EXIT_REASON_PTC_G 8 42#define EXIT_REASON_DEBUG 20 43 44/*Define vmm address space and vm data space.*/ 45#define KVM_VMM_SIZE (__IA64_UL_CONST(16)<<20) 46#define KVM_VMM_SHIFT 24 47#define KVM_VMM_BASE 0xD000000000000000 48#define VMM_SIZE (__IA64_UL_CONST(8)<<20) 49 50/* 51 * Define vm_buffer, used by PAL Services, base address. 52 * Note: vm_buffer is in the VMM-BLOCK, the size must be < 8M 53 */ 54#define KVM_VM_BUFFER_BASE (KVM_VMM_BASE + VMM_SIZE) 55#define KVM_VM_BUFFER_SIZE (__IA64_UL_CONST(8)<<20) 56 57/* 58 * kvm guest's data area looks as follow: 59 * 60 * +----------------------+ ------- KVM_VM_DATA_SIZE 61 * | vcpu[n]'s data | | ___________________KVM_STK_OFFSET 62 * | | | / | 63 * | .......... | | /vcpu's struct&stack | 64 * | .......... | | /---------------------|---- 0 65 * | vcpu[5]'s data | | / vpd | 66 * | vcpu[4]'s data | |/-----------------------| 67 * | vcpu[3]'s data | / vtlb | 68 * | vcpu[2]'s data | /|------------------------| 69 * | vcpu[1]'s data |/ | vhpt | 70 * | vcpu[0]'s data |____________________________| 71 * +----------------------+ | 72 * | memory dirty log | | 73 * +----------------------+ | 74 * | vm's data struct | | 75 * +----------------------+ | 76 * | | | 77 * | | | 78 * | | | 79 * | | | 80 * | | | 81 * | | | 82 * | | | 83 * | vm's p2m table | | 84 * | | | 85 * | | | 86 * | | | | 87 * vm's data->| | | | 88 * +----------------------+ ------- 0 89 * To support large memory, needs to increase the size of p2m. 90 * To support more vcpus, needs to ensure it has enough space to 91 * hold vcpus' data. 92 */ 93 94#define KVM_VM_DATA_SHIFT 26 95#define KVM_VM_DATA_SIZE (__IA64_UL_CONST(1) << KVM_VM_DATA_SHIFT) 96#define KVM_VM_DATA_BASE (KVM_VMM_BASE + KVM_VM_DATA_SIZE) 97 98#define KVM_P2M_BASE KVM_VM_DATA_BASE 99#define KVM_P2M_SIZE (__IA64_UL_CONST(24) << 20) 100 101#define VHPT_SHIFT 16 102#define VHPT_SIZE (__IA64_UL_CONST(1) << VHPT_SHIFT) 103#define VHPT_NUM_ENTRIES (__IA64_UL_CONST(1) << (VHPT_SHIFT-5)) 104 105#define VTLB_SHIFT 16 106#define VTLB_SIZE (__IA64_UL_CONST(1) << VTLB_SHIFT) 107#define VTLB_NUM_ENTRIES (1UL << (VHPT_SHIFT-5)) 108 109#define VPD_SHIFT 16 110#define VPD_SIZE (__IA64_UL_CONST(1) << VPD_SHIFT) 111 112#define VCPU_STRUCT_SHIFT 16 113#define VCPU_STRUCT_SIZE (__IA64_UL_CONST(1) << VCPU_STRUCT_SHIFT) 114 115/* 116 * This must match KVM_IA64_VCPU_STACK_{SHIFT,SIZE} arch/ia64/include/asm/kvm.h 117 */ 118#define KVM_STK_SHIFT 16 119#define KVM_STK_OFFSET (__IA64_UL_CONST(1)<< KVM_STK_SHIFT) 120 121#define KVM_VM_STRUCT_SHIFT 19 122#define KVM_VM_STRUCT_SIZE (__IA64_UL_CONST(1) << KVM_VM_STRUCT_SHIFT) 123 124#define KVM_MEM_DIRY_LOG_SHIFT 19 125#define KVM_MEM_DIRTY_LOG_SIZE (__IA64_UL_CONST(1) << KVM_MEM_DIRY_LOG_SHIFT) 126 127#ifndef __ASSEMBLY__ 128 129/*Define the max vcpus and memory for Guests.*/ 130#define KVM_MAX_VCPUS (KVM_VM_DATA_SIZE - KVM_P2M_SIZE - KVM_VM_STRUCT_SIZE -\ 131 KVM_MEM_DIRTY_LOG_SIZE) / sizeof(struct kvm_vcpu_data) 132#define KVM_MAX_MEM_SIZE (KVM_P2M_SIZE >> 3 << PAGE_SHIFT) 133 134#define VMM_LOG_LEN 256 135 136#include <linux/types.h> 137#include <linux/mm.h> 138#include <linux/kvm.h> 139#include <linux/kvm_para.h> 140#include <linux/kvm_types.h> 141 142#include <asm/pal.h> 143#include <asm/sal.h> 144#include <asm/page.h> 145 146struct kvm_vcpu_data { 147 char vcpu_vhpt[VHPT_SIZE]; 148 char vcpu_vtlb[VTLB_SIZE]; 149 char vcpu_vpd[VPD_SIZE]; 150 char vcpu_struct[VCPU_STRUCT_SIZE]; 151}; 152 153struct kvm_vm_data { 154 char kvm_p2m[KVM_P2M_SIZE]; 155 char kvm_vm_struct[KVM_VM_STRUCT_SIZE]; 156 char kvm_mem_dirty_log[KVM_MEM_DIRTY_LOG_SIZE]; 157 struct kvm_vcpu_data vcpu_data[KVM_MAX_VCPUS]; 158}; 159 160#define VCPU_BASE(n) (KVM_VM_DATA_BASE + \ 161 offsetof(struct kvm_vm_data, vcpu_data[n])) 162#define KVM_VM_BASE (KVM_VM_DATA_BASE + \ 163 offsetof(struct kvm_vm_data, kvm_vm_struct)) 164#define KVM_MEM_DIRTY_LOG_BASE KVM_VM_DATA_BASE + \ 165 offsetof(struct kvm_vm_data, kvm_mem_dirty_log) 166 167#define VHPT_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vhpt)) 168#define VTLB_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vtlb)) 169#define VPD_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vpd)) 170#define VCPU_STRUCT_BASE(n) (VCPU_BASE(n) + \ 171 offsetof(struct kvm_vcpu_data, vcpu_struct)) 172 173/*IO section definitions*/ 174#define IOREQ_READ 1 175#define IOREQ_WRITE 0 176 177#define STATE_IOREQ_NONE 0 178#define STATE_IOREQ_READY 1 179#define STATE_IOREQ_INPROCESS 2 180#define STATE_IORESP_READY 3 181 182/*Guest Physical address layout.*/ 183#define GPFN_MEM (0UL << 60) /* Guest pfn is normal mem */ 184#define GPFN_FRAME_BUFFER (1UL << 60) /* VGA framebuffer */ 185#define GPFN_LOW_MMIO (2UL << 60) /* Low MMIO range */ 186#define GPFN_PIB (3UL << 60) /* PIB base */ 187#define GPFN_IOSAPIC (4UL << 60) /* IOSAPIC base */ 188#define GPFN_LEGACY_IO (5UL << 60) /* Legacy I/O base */ 189#define GPFN_GFW (6UL << 60) /* Guest Firmware */ 190#define GPFN_PHYS_MMIO (7UL << 60) /* Directed MMIO Range */ 191 192#define GPFN_IO_MASK (7UL << 60) /* Guest pfn is I/O type */ 193#define GPFN_INV_MASK (1UL << 63) /* Guest pfn is invalid */ 194#define INVALID_MFN (~0UL) 195#define MEM_G (1UL << 30) 196#define MEM_M (1UL << 20) 197#define MMIO_START (3 * MEM_G) 198#define MMIO_SIZE (512 * MEM_M) 199#define VGA_IO_START 0xA0000UL 200#define VGA_IO_SIZE 0x20000 201#define LEGACY_IO_START (MMIO_START + MMIO_SIZE) 202#define LEGACY_IO_SIZE (64 * MEM_M) 203#define IO_SAPIC_START 0xfec00000UL 204#define IO_SAPIC_SIZE 0x100000 205#define PIB_START 0xfee00000UL 206#define PIB_SIZE 0x200000 207#define GFW_START (4 * MEM_G - 16 * MEM_M) 208#define GFW_SIZE (16 * MEM_M) 209 210/*Deliver mode, defined for ioapic.c*/ 211#define dest_Fixed IOSAPIC_FIXED 212#define dest_LowestPrio IOSAPIC_LOWEST_PRIORITY 213 214#define NMI_VECTOR 2 215#define ExtINT_VECTOR 0 216#define NULL_VECTOR (-1) 217#define IA64_SPURIOUS_INT_VECTOR 0x0f 218 219#define VCPU_LID(v) (((u64)(v)->vcpu_id) << 24) 220 221/* 222 *Delivery mode 223 */ 224#define SAPIC_DELIV_SHIFT 8 225#define SAPIC_FIXED 0x0 226#define SAPIC_LOWEST_PRIORITY 0x1 227#define SAPIC_PMI 0x2 228#define SAPIC_NMI 0x4 229#define SAPIC_INIT 0x5 230#define SAPIC_EXTINT 0x7 231 232/* 233 * vcpu->requests bit members for arch 234 */ 235#define KVM_REQ_PTC_G 32 236#define KVM_REQ_RESUME 33 237 238#define KVM_NR_PAGE_SIZES 1 239#define KVM_PAGES_PER_HPAGE(x) 1 240 241struct kvm; 242struct kvm_vcpu; 243 244struct kvm_mmio_req { 245 uint64_t addr; /* physical address */ 246 uint64_t size; /* size in bytes */ 247 uint64_t data; /* data (or paddr of data) */ 248 uint8_t state:4; 249 uint8_t dir:1; /* 1=read, 0=write */ 250}; 251 252/*Pal data struct */ 253struct kvm_pal_call{ 254 /*In area*/ 255 uint64_t gr28; 256 uint64_t gr29; 257 uint64_t gr30; 258 uint64_t gr31; 259 /*Out area*/ 260 struct ia64_pal_retval ret; 261}; 262 263/* Sal data structure */ 264struct kvm_sal_call{ 265 /*In area*/ 266 uint64_t in0; 267 uint64_t in1; 268 uint64_t in2; 269 uint64_t in3; 270 uint64_t in4; 271 uint64_t in5; 272 uint64_t in6; 273 uint64_t in7; 274 struct sal_ret_values ret; 275}; 276 277/*Guest change rr6*/ 278struct kvm_switch_rr6 { 279 uint64_t old_rr; 280 uint64_t new_rr; 281}; 282 283union ia64_ipi_a{ 284 unsigned long val; 285 struct { 286 unsigned long rv : 3; 287 unsigned long ir : 1; 288 unsigned long eid : 8; 289 unsigned long id : 8; 290 unsigned long ib_base : 44; 291 }; 292}; 293 294union ia64_ipi_d { 295 unsigned long val; 296 struct { 297 unsigned long vector : 8; 298 unsigned long dm : 3; 299 unsigned long ig : 53; 300 }; 301}; 302 303/*ipi check exit data*/ 304struct kvm_ipi_data{ 305 union ia64_ipi_a addr; 306 union ia64_ipi_d data; 307}; 308 309/*global purge data*/ 310struct kvm_ptc_g { 311 unsigned long vaddr; 312 unsigned long rr; 313 unsigned long ps; 314 struct kvm_vcpu *vcpu; 315}; 316 317/*Exit control data */ 318struct exit_ctl_data{ 319 uint32_t exit_reason; 320 uint32_t vm_status; 321 union { 322 struct kvm_mmio_req ioreq; 323 struct kvm_pal_call pal_data; 324 struct kvm_sal_call sal_data; 325 struct kvm_switch_rr6 rr_data; 326 struct kvm_ipi_data ipi_data; 327 struct kvm_ptc_g ptc_g_data; 328 } u; 329}; 330 331union pte_flags { 332 unsigned long val; 333 struct { 334 unsigned long p : 1; /*0 */ 335 unsigned long : 1; /* 1 */ 336 unsigned long ma : 3; /* 2-4 */ 337 unsigned long a : 1; /* 5 */ 338 unsigned long d : 1; /* 6 */ 339 unsigned long pl : 2; /* 7-8 */ 340 unsigned long ar : 3; /* 9-11 */ 341 unsigned long ppn : 38; /* 12-49 */ 342 unsigned long : 2; /* 50-51 */ 343 unsigned long ed : 1; /* 52 */ 344 }; 345}; 346 347union ia64_pta { 348 unsigned long val; 349 struct { 350 unsigned long ve : 1; 351 unsigned long reserved0 : 1; 352 unsigned long size : 6; 353 unsigned long vf : 1; 354 unsigned long reserved1 : 6; 355 unsigned long base : 49; 356 }; 357}; 358 359struct thash_cb { 360 /* THASH base information */ 361 struct thash_data *hash; /* hash table pointer */ 362 union ia64_pta pta; 363 int num; 364}; 365 366struct kvm_vcpu_stat { 367}; 368 369struct kvm_vcpu_arch { 370 int launched; 371 int last_exit; 372 int last_run_cpu; 373 int vmm_tr_slot; 374 int vm_tr_slot; 375 int sn_rtc_tr_slot; 376 377#define KVM_MP_STATE_RUNNABLE 0 378#define KVM_MP_STATE_UNINITIALIZED 1 379#define KVM_MP_STATE_INIT_RECEIVED 2 380#define KVM_MP_STATE_HALTED 3 381 int mp_state; 382 383#define MAX_PTC_G_NUM 3 384 int ptc_g_count; 385 struct kvm_ptc_g ptc_g_data[MAX_PTC_G_NUM]; 386 387 /*halt timer to wake up sleepy vcpus*/ 388 struct hrtimer hlt_timer; 389 long ht_active; 390 391 struct kvm_lapic *apic; /* kernel irqchip context */ 392 struct vpd *vpd; 393 394 /* Exit data for vmm_transition*/ 395 struct exit_ctl_data exit_data; 396 397 cpumask_t cache_coherent_map; 398 399 unsigned long vmm_rr; 400 unsigned long host_rr6; 401 unsigned long psbits[8]; 402 unsigned long cr_iipa; 403 unsigned long cr_isr; 404 unsigned long vsa_base; 405 unsigned long dirty_log_lock_pa; 406 unsigned long __gp; 407 /* TR and TC. */ 408 struct thash_data itrs[NITRS]; 409 struct thash_data dtrs[NDTRS]; 410 /* Bit is set if there is a tr/tc for the region. */ 411 unsigned char itr_regions; 412 unsigned char dtr_regions; 413 unsigned char tc_regions; 414 /* purge all */ 415 unsigned long ptce_base; 416 unsigned long ptce_count[2]; 417 unsigned long ptce_stride[2]; 418 /* itc/itm */ 419 unsigned long last_itc; 420 long itc_offset; 421 unsigned long itc_check; 422 unsigned long timer_check; 423 unsigned int timer_pending; 424 unsigned int timer_fired; 425 426 unsigned long vrr[8]; 427 unsigned long ibr[8]; 428 unsigned long dbr[8]; 429 unsigned long insvc[4]; /* Interrupt in service. */ 430 unsigned long xtp; 431 432 unsigned long metaphysical_rr0; /* from kvm_arch (so is pinned) */ 433 unsigned long metaphysical_rr4; /* from kvm_arch (so is pinned) */ 434 unsigned long metaphysical_saved_rr0; /* from kvm_arch */ 435 unsigned long metaphysical_saved_rr4; /* from kvm_arch */ 436 unsigned long fp_psr; /*used for lazy float register */ 437 unsigned long saved_gp; 438 /*for phycial emulation */ 439 int mode_flags; 440 struct thash_cb vtlb; 441 struct thash_cb vhpt; 442 char irq_check; 443 char irq_new_pending; 444 445 unsigned long opcode; 446 unsigned long cause; 447 char log_buf[VMM_LOG_LEN]; 448 union context host; 449 union context guest; 450}; 451 452struct kvm_vm_stat { 453 u64 remote_tlb_flush; 454}; 455 456struct kvm_sal_data { 457 unsigned long boot_ip; 458 unsigned long boot_gp; 459}; 460 461struct kvm_arch { 462 spinlock_t dirty_log_lock; 463 464 unsigned long vm_base; 465 unsigned long metaphysical_rr0; 466 unsigned long metaphysical_rr4; 467 unsigned long vmm_init_rr; 468 469 int is_sn2; 470 471 struct kvm_ioapic *vioapic; 472 struct kvm_vm_stat stat; 473 struct kvm_sal_data rdv_sal_data; 474 475 struct list_head assigned_dev_head; 476 struct iommu_domain *iommu_domain; 477 int iommu_flags; 478 struct hlist_head irq_ack_notifier_list; 479 480 unsigned long irq_sources_bitmap; 481 unsigned long irq_states[KVM_IOAPIC_NUM_PINS]; 482}; 483 484union cpuid3_t { 485 u64 value; 486 struct { 487 u64 number : 8; 488 u64 revision : 8; 489 u64 model : 8; 490 u64 family : 8; 491 u64 archrev : 8; 492 u64 rv : 24; 493 }; 494}; 495 496struct kvm_pt_regs { 497 /* The following registers are saved by SAVE_MIN: */ 498 unsigned long b6; /* scratch */ 499 unsigned long b7; /* scratch */ 500 501 unsigned long ar_csd; /* used by cmp8xchg16 (scratch) */ 502 unsigned long ar_ssd; /* reserved for future use (scratch) */ 503 504 unsigned long r8; /* scratch (return value register 0) */ 505 unsigned long r9; /* scratch (return value register 1) */ 506 unsigned long r10; /* scratch (return value register 2) */ 507 unsigned long r11; /* scratch (return value register 3) */ 508 509 unsigned long cr_ipsr; /* interrupted task's psr */ 510 unsigned long cr_iip; /* interrupted task's instruction pointer */ 511 unsigned long cr_ifs; /* interrupted task's function state */ 512 513 unsigned long ar_unat; /* interrupted task's NaT register (preserved) */ 514 unsigned long ar_pfs; /* prev function state */ 515 unsigned long ar_rsc; /* RSE configuration */ 516 /* The following two are valid only if cr_ipsr.cpl > 0: */ 517 unsigned long ar_rnat; /* RSE NaT */ 518 unsigned long ar_bspstore; /* RSE bspstore */ 519 520 unsigned long pr; /* 64 predicate registers (1 bit each) */ 521 unsigned long b0; /* return pointer (bp) */ 522 unsigned long loadrs; /* size of dirty partition << 16 */ 523 524 unsigned long r1; /* the gp pointer */ 525 unsigned long r12; /* interrupted task's memory stack pointer */ 526 unsigned long r13; /* thread pointer */ 527 528 unsigned long ar_fpsr; /* floating point status (preserved) */ 529 unsigned long r15; /* scratch */ 530 531 /* The remaining registers are NOT saved for system calls. */ 532 unsigned long r14; /* scratch */ 533 unsigned long r2; /* scratch */ 534 unsigned long r3; /* scratch */ 535 unsigned long r16; /* scratch */ 536 unsigned long r17; /* scratch */ 537 unsigned long r18; /* scratch */ 538 unsigned long r19; /* scratch */ 539 unsigned long r20; /* scratch */ 540 unsigned long r21; /* scratch */ 541 unsigned long r22; /* scratch */ 542 unsigned long r23; /* scratch */ 543 unsigned long r24; /* scratch */ 544 unsigned long r25; /* scratch */ 545 unsigned long r26; /* scratch */ 546 unsigned long r27; /* scratch */ 547 unsigned long r28; /* scratch */ 548 unsigned long r29; /* scratch */ 549 unsigned long r30; /* scratch */ 550 unsigned long r31; /* scratch */ 551 unsigned long ar_ccv; /* compare/exchange value (scratch) */ 552 553 /* 554 * Floating point registers that the kernel considers scratch: 555 */ 556 struct ia64_fpreg f6; /* scratch */ 557 struct ia64_fpreg f7; /* scratch */ 558 struct ia64_fpreg f8; /* scratch */ 559 struct ia64_fpreg f9; /* scratch */ 560 struct ia64_fpreg f10; /* scratch */ 561 struct ia64_fpreg f11; /* scratch */ 562 563 unsigned long r4; /* preserved */ 564 unsigned long r5; /* preserved */ 565 unsigned long r6; /* preserved */ 566 unsigned long r7; /* preserved */ 567 unsigned long eml_unat; /* used for emulating instruction */ 568 unsigned long pad0; /* alignment pad */ 569}; 570 571static inline struct kvm_pt_regs *vcpu_regs(struct kvm_vcpu *v) 572{ 573 return (struct kvm_pt_regs *) ((unsigned long) v + KVM_STK_OFFSET) - 1; 574} 575 576typedef int kvm_vmm_entry(void); 577typedef void kvm_tramp_entry(union context *host, union context *guest); 578 579struct kvm_vmm_info{ 580 struct module *module; 581 kvm_vmm_entry *vmm_entry; 582 kvm_tramp_entry *tramp_entry; 583 unsigned long vmm_ivt; 584 unsigned long patch_mov_ar; 585 unsigned long patch_mov_ar_sn2; 586}; 587 588int kvm_highest_pending_irq(struct kvm_vcpu *vcpu); 589int kvm_emulate_halt(struct kvm_vcpu *vcpu); 590int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); 591void kvm_sal_emul(struct kvm_vcpu *vcpu); 592 593#endif /* __ASSEMBLY__*/ 594 595#endif 596