arch/ia64/kvm/vcpu.h

   1 /*
   2  *  vcpu.h: vcpu routines
   3  *      Copyright (c) 2005, Intel Corporation.
   4  *      Xuefei Xu (Anthony Xu) (Anthony.xu@intel.com)
   5  *      Yaozu Dong (Eddie Dong) (Eddie.dong@intel.com)
   6  *
   7  *      Copyright (c) 2007, Intel Corporation.
   8  *      Xuefei Xu (Anthony Xu) (Anthony.xu@intel.com)
   9  *      Xiantao Zhang (xiantao.zhang@intel.com)
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms and conditions of the GNU General Public License,
  13  * version 2, as published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope it will be useful, but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  18  * more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along with
  21  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  22  * Place - Suite 330, Boston, MA 02111-1307 USA.
  23  *
  24  */
  25
  26
  27 #ifndef __KVM_VCPU_H__
  28 #define __KVM_VCPU_H__
  29
  30 #include <asm/types.h>
  31 #include <asm/fpu.h>
  32 #include <asm/processor.h>
  33
  34 #ifndef __ASSEMBLY__
  35 #include "vti.h"
  36
  37 #include <linux/kvm_host.h>
  38 #include <linux/spinlock.h>
  39
  40 typedef unsigned long IA64_INST;
  41
  42 typedef union U_IA64_BUNDLE {
  43         unsigned long i64[2];
  44         struct { unsigned long template:5, slot0:41, slot1a:18,
  45                 slot1b:23, slot2:41; };
  46         /* NOTE: following doesn't work because bitfields can't cross natural
  47            size boundaries
  48            struct { unsigned long template:5, slot0:41, slot1:41, slot2:41; }; */
  49 } IA64_BUNDLE;
  50
  51 typedef union U_INST64_A5 {
  52         IA64_INST inst;
  53         struct { unsigned long qp:6, r1:7, imm7b:7, r3:2, imm5c:5,
  54                 imm9d:9, s:1, major:4; };
  55 } INST64_A5;
  56
  57 typedef union U_INST64_B4 {
  58         IA64_INST inst;
  59         struct { unsigned long qp:6, btype:3, un3:3, p:1, b2:3, un11:11, x6:6,
  60                 wh:2, d:1, un1:1, major:4; };
  61 } INST64_B4;
  62
  63 typedef union U_INST64_B8 {
  64         IA64_INST inst;
  65         struct { unsigned long qp:6, un21:21, x6:6, un4:4, major:4; };
  66 } INST64_B8;
  67
  68 typedef union U_INST64_B9 {
  69         IA64_INST inst;
  70         struct { unsigned long qp:6, imm20:20, :1, x6:6, :3, i:1, major:4; };
  71 } INST64_B9;
  72
  73 typedef union U_INST64_I19 {
  74         IA64_INST inst;
  75         struct { unsigned long qp:6, imm20:20, :1, x6:6, x3:3, i:1, major:4; };
  76 } INST64_I19;
  77
  78 typedef union U_INST64_I26 {
  79         IA64_INST inst;
  80         struct { unsigned long qp:6, :7, r2:7, ar3:7, x6:6, x3:3, :1, major:4; };
  81 } INST64_I26;
  82
  83 typedef union U_INST64_I27 {
  84         IA64_INST inst;
  85         struct { unsigned long qp:6, :7, imm:7, ar3:7, x6:6, x3:3, s:1, major:4; };
  86 } INST64_I27;
  87
  88 typedef union U_INST64_I28 { /* not privileged (mov from AR) */
  89         IA64_INST inst;
  90         struct { unsigned long qp:6, r1:7, :7, ar3:7, x6:6, x3:3, :1, major:4; };
  91 } INST64_I28;
  92
  93 typedef union U_INST64_M28 {
  94         IA64_INST inst;
  95         struct { unsigned long qp:6, :14, r3:7, x6:6, x3:3, :1, major:4; };
  96 } INST64_M28;
  97
  98 typedef union U_INST64_M29 {
  99         IA64_INST inst;
 100         struct { unsigned long qp:6, :7, r2:7, ar3:7, x6:6, x3:3, :1, major:4; };
 101 } INST64_M29;
 102
 103 typedef union U_INST64_M30 {
 104         IA64_INST inst;
 105         struct { unsigned long qp:6, :7, imm:7, ar3:7, x4:4, x2:2,
 106                 x3:3, s:1, major:4; };
 107 } INST64_M30;
 108
 109 typedef union U_INST64_M31 {
 110         IA64_INST inst;
 111         struct { unsigned long qp:6, r1:7, :7, ar3:7, x6:6, x3:3, :1, major:4; };
 112 } INST64_M31;
 113
 114 typedef union U_INST64_M32 {
 115         IA64_INST inst;
 116         struct { unsigned long qp:6, :7, r2:7, cr3:7, x6:6, x3:3, :1, major:4; };
 117 } INST64_M32;
 118
 119 typedef union U_INST64_M33 {
 120         IA64_INST inst;
 121         struct { unsigned long qp:6, r1:7, :7, cr3:7, x6:6, x3:3, :1, major:4; };
 122 } INST64_M33;
 123
 124 typedef union U_INST64_M35 {
 125         IA64_INST inst;
 126         struct { unsigned long qp:6, :7, r2:7, :7, x6:6, x3:3, :1, major:4; };
 127
 128 } INST64_M35;
 129
 130 typedef union U_INST64_M36 {
 131         IA64_INST inst;
 132         struct { unsigned long qp:6, r1:7, :14, x6:6, x3:3, :1, major:4; };
 133 } INST64_M36;
 134
 135 typedef union U_INST64_M37 {
 136         IA64_INST inst;
 137         struct { unsigned long qp:6, imm20a:20, :1, x4:4, x2:2, x3:3,
 138                 i:1, major:4; };
 139 } INST64_M37;
 140
 141 typedef union U_INST64_M41 {
 142         IA64_INST inst;
 143         struct { unsigned long qp:6, :7, r2:7, :7, x6:6, x3:3, :1, major:4; };
 144 } INST64_M41;
 145
 146 typedef union U_INST64_M42 {
 147         IA64_INST inst;
 148         struct { unsigned long qp:6, :7, r2:7, r3:7, x6:6, x3:3, :1, major:4; };
 149 } INST64_M42;
 150
 151 typedef union U_INST64_M43 {
 152         IA64_INST inst;
 153         struct { unsigned long qp:6, r1:7, :7, r3:7, x6:6, x3:3, :1, major:4; };
 154 } INST64_M43;
 155
 156 typedef union U_INST64_M44 {
 157         IA64_INST inst;
 158         struct { unsigned long qp:6, imm:21, x4:4, i2:2, x3:3, i:1, major:4; };
 159 } INST64_M44;
 160
 161 typedef union U_INST64_M45 {
 162         IA64_INST inst;
 163         struct { unsigned long qp:6, :7, r2:7, r3:7, x6:6, x3:3, :1, major:4; };
 164 } INST64_M45;
 165
 166 typedef union U_INST64_M46 {
 167         IA64_INST inst;
 168         struct { unsigned long qp:6, r1:7, un7:7, r3:7, x6:6,
 169                 x3:3, un1:1, major:4; };
 170 } INST64_M46;
 171
 172 typedef union U_INST64_M47 {
 173         IA64_INST inst;
 174         struct { unsigned long qp:6, un14:14, r3:7, x6:6, x3:3, un1:1, major:4; };
 175 } INST64_M47;
 176
 177 typedef union U_INST64_M1{
 178         IA64_INST inst;
 179         struct { unsigned long qp:6, r1:7, un7:7, r3:7, x:1, hint:2,
 180                 x6:6, m:1, major:4; };
 181 } INST64_M1;
 182
 183 typedef union U_INST64_M2{
 184         IA64_INST inst;
 185         struct { unsigned long qp:6, r1:7, r2:7, r3:7, x:1, hint:2,
 186                 x6:6, m:1, major:4; };
 187 } INST64_M2;
 188
 189 typedef union U_INST64_M3{
 190         IA64_INST inst;
 191         struct { unsigned long qp:6, r1:7, imm7:7, r3:7, i:1, hint:2,
 192                 x6:6, s:1, major:4; };
 193 } INST64_M3;
 194
 195 typedef union U_INST64_M4 {
 196         IA64_INST inst;
 197         struct { unsigned long qp:6, un7:7, r2:7, r3:7, x:1, hint:2,
 198                 x6:6, m:1, major:4; };
 199 } INST64_M4;
 200
 201 typedef union U_INST64_M5 {
 202         IA64_INST inst;
 203         struct { unsigned long qp:6, imm7:7, r2:7, r3:7, i:1, hint:2,
 204                 x6:6, s:1, major:4; };
 205 } INST64_M5;
 206
 207 typedef union U_INST64_M6 {
 208         IA64_INST inst;
 209         struct { unsigned long qp:6, f1:7, un7:7, r3:7, x:1, hint:2,
 210                 x6:6, m:1, major:4; };
 211 } INST64_M6;
 212
 213 typedef union U_INST64_M9 {
 214         IA64_INST inst;
 215         struct { unsigned long qp:6, :7, f2:7, r3:7, x:1, hint:2,
 216                 x6:6, m:1, major:4; };
 217 } INST64_M9;
 218
 219 typedef union U_INST64_M10 {
 220         IA64_INST inst;
 221         struct { unsigned long qp:6, imm7:7, f2:7, r3:7, i:1, hint:2,
 222                 x6:6, s:1, major:4; };
 223 } INST64_M10;
 224
 225 typedef union U_INST64_M12 {
 226         IA64_INST inst;
 227         struct { unsigned long qp:6, f1:7, f2:7, r3:7, x:1, hint:2,
 228                 x6:6, m:1, major:4; };
 229 } INST64_M12;
 230
 231 typedef union U_INST64_M15 {
 232         IA64_INST inst;
 233         struct { unsigned long qp:6, :7, imm7:7, r3:7, i:1, hint:2,
 234                 x6:6, s:1, major:4; };
 235 } INST64_M15;
 236
 237 typedef union U_INST64 {
 238         IA64_INST inst;
 239         struct { unsigned long :37, major:4; } generic;
 240         INST64_A5 A5;   /* used in build_hypercall_bundle only */
 241         INST64_B4 B4;   /* used in build_hypercall_bundle only */
 242         INST64_B8 B8;   /* rfi, bsw.[01] */
 243         INST64_B9 B9;   /* break.b */
 244         INST64_I19 I19; /* used in build_hypercall_bundle only */
 245         INST64_I26 I26; /* mov register to ar (I unit) */
 246         INST64_I27 I27; /* mov immediate to ar (I unit) */
 247         INST64_I28 I28; /* mov from ar (I unit) */
 248         INST64_M1  M1;  /* ld integer */
 249         INST64_M2  M2;
 250         INST64_M3  M3;
 251         INST64_M4  M4;  /* st integer */
 252         INST64_M5  M5;
 253         INST64_M6  M6;  /* ldfd floating pointer                */
 254         INST64_M9  M9;  /* stfd floating pointer                */
 255         INST64_M10 M10; /* stfd floating pointer                */
 256         INST64_M12 M12;     /* ldfd pair floating pointer               */
 257         INST64_M15 M15; /* lfetch + imm update                  */
 258         INST64_M28 M28; /* purge translation cache entry        */
 259         INST64_M29 M29; /* mov register to ar (M unit)          */
 260         INST64_M30 M30; /* mov immediate to ar (M unit)         */
 261         INST64_M31 M31; /* mov from ar (M unit)                 */
 262         INST64_M32 M32; /* mov reg to cr                        */
 263         INST64_M33 M33; /* mov from cr                          */
 264         INST64_M35 M35; /* mov to psr                           */
 265         INST64_M36 M36; /* mov from psr                         */
 266         INST64_M37 M37; /* break.m                              */
 267         INST64_M41 M41; /* translation cache insert             */
 268         INST64_M42 M42; /* mov to indirect reg/translation reg insert*/
 269         INST64_M43 M43; /* mov from indirect reg                */
 270         INST64_M44 M44; /* set/reset system mask                */
 271         INST64_M45 M45; /* translation purge                    */
 272         INST64_M46 M46; /* translation access (tpa,tak)         */
 273         INST64_M47 M47; /* purge translation entry              */
 274 } INST64;
 275
 276 #define MASK_41 ((unsigned long)0x1ffffffffff)
 277
 278 /* Virtual address memory attributes encoding */
 279 #define VA_MATTR_WB         0x0
 280 #define VA_MATTR_UC         0x4
 281 #define VA_MATTR_UCE        0x5
 282 #define VA_MATTR_WC         0x6
 283 #define VA_MATTR_NATPAGE    0x7
 284
 285 #define PMASK(size)         (~((size) - 1))
 286 #define PSIZE(size)         (1UL<<(size))
 287 #define CLEARLSB(ppn, nbits)    (((ppn) >> (nbits)) << (nbits))
 288 #define PAGEALIGN(va, ps)       CLEARLSB(va, ps)
 289 #define PAGE_FLAGS_RV_MASK   (0x2|(0x3UL<<50)|(((1UL<<11)-1)<<53))
 290 #define _PAGE_MA_ST     (0x1 <<  2) /* is reserved for software use */
 291
 292 #define ARCH_PAGE_SHIFT   12
 293
 294 #define INVALID_TI_TAG (1UL << 63)
 295
 296 #define VTLB_PTE_P_BIT      0
 297 #define VTLB_PTE_IO_BIT     60
 298 #define VTLB_PTE_IO         (1UL<<VTLB_PTE_IO_BIT)
 299 #define VTLB_PTE_P          (1UL<<VTLB_PTE_P_BIT)
 300
 301 #define vcpu_quick_region_check(_tr_regions,_ifa)               \
 302         (_tr_regions & (1 << ((unsigned long)_ifa >> 61)))
 303
 304 #define vcpu_quick_region_set(_tr_regions,_ifa)             \
 305         do {_tr_regions |= (1 << ((unsigned long)_ifa >> 61)); } while (0)
 306
 307 static inline void vcpu_set_tr(struct thash_data *trp, u64 pte, u64 itir,
 308                 u64 va, u64 rid)
 309 {
 310         trp->page_flags = pte;
 311         trp->itir = itir;
 312         trp->vadr = va;
 313         trp->rid = rid;
 314 }
 315
 316 extern u64 kvm_get_mpt_entry(u64 gpfn);
 317
 318 /* Return I/ */
 319 static inline u64 __gpfn_is_io(u64 gpfn)
 320 {
 321         u64  pte;
 322         pte = kvm_get_mpt_entry(gpfn);
 323         if (!(pte & GPFN_INV_MASK)) {
 324                 pte = pte & GPFN_IO_MASK;
 325                 if (pte != GPFN_PHYS_MMIO)
 326                         return pte;
 327         }
 328         return 0;
 329 }
 330 #endif
 331 #define IA64_NO_FAULT   0
 332 #define IA64_FAULT      1
 333
 334 #define VMM_RBS_OFFSET  ((VMM_TASK_SIZE + 15) & ~15)
 335
 336 #define SW_BAD  0   /* Bad mode transitition */
 337 #define SW_V2P  1   /* Physical emulatino is activated */
 338 #define SW_P2V  2   /* Exit physical mode emulation */
 339 #define SW_SELF 3   /* No mode transition */
 340 #define SW_NOP  4   /* Mode transition, but without action required */
 341
 342 #define GUEST_IN_PHY    0x1
 343 #define GUEST_PHY_EMUL  0x2
 344
 345 #define current_vcpu ((struct kvm_vcpu *) ia64_getreg(_IA64_REG_TP))
 346
 347 #define VRN_SHIFT       61
 348 #define VRN_MASK        0xe000000000000000
 349 #define VRN0            0x0UL
 350 #define VRN1            0x1UL
 351 #define VRN2            0x2UL
 352 #define VRN3            0x3UL
 353 #define VRN4            0x4UL
 354 #define VRN5            0x5UL
 355 #define VRN6            0x6UL
 356 #define VRN7            0x7UL
 357
 358 #define IRQ_NO_MASKED         0
 359 #define IRQ_MASKED_BY_VTPR    1
 360 #define IRQ_MASKED_BY_INSVC   2   /* masked by inservice IRQ */
 361
 362 #define PTA_BASE_SHIFT      15
 363
 364 #define IA64_PSR_VM_BIT     46
 365 #define IA64_PSR_VM (__IA64_UL(1) << IA64_PSR_VM_BIT)
 366
 367 /* Interruption Function State */
 368 #define IA64_IFS_V_BIT      63
 369 #define IA64_IFS_V  (__IA64_UL(1) << IA64_IFS_V_BIT)
 370
 371 #define PHY_PAGE_UC (_PAGE_A|_PAGE_D|_PAGE_P|_PAGE_MA_UC|_PAGE_AR_RWX)
 372 #define PHY_PAGE_WB (_PAGE_A|_PAGE_D|_PAGE_P|_PAGE_MA_WB|_PAGE_AR_RWX)
 373
 374 #ifndef __ASSEMBLY__
 375
 376 #include <asm/gcc_intrin.h>
 377
 378 #define is_physical_mode(v)             \
 379         ((v->arch.mode_flags) & GUEST_IN_PHY)
 380
 381 #define is_virtual_mode(v)      \
 382         (!is_physical_mode(v))
 383
 384 #define MODE_IND(psr)   \
 385         (((psr).it << 2) + ((psr).dt << 1) + (psr).rt)
 386
 387 #ifndef CONFIG_SMP
 388 #define _vmm_raw_spin_lock(x)    do {}while(0)
 389 #define _vmm_raw_spin_unlock(x) do {}while(0)
 390 #else
 391 typedef struct {
 392         volatile unsigned int lock;
 393 } vmm_spinlock_t;
 394 #define _vmm_raw_spin_lock(x)                                           \
 395         do {                                                            \
 396                 __u32 *ia64_spinlock_ptr = (__u32 *) (x);               \
 397                 __u64 ia64_spinlock_val;                                \
 398                 ia64_spinlock_val = ia64_cmpxchg4_acq(ia64_spinlock_ptr, 1, 0);\
 399                 if (unlikely(ia64_spinlock_val)) {                      \
 400                         do {                                            \
 401                                 while (*ia64_spinlock_ptr)              \
 402                                 ia64_barrier();                         \
 403                                 ia64_spinlock_val =                     \
 404                                 ia64_cmpxchg4_acq(ia64_spinlock_ptr, 1, 0);\
 405                         } while (ia64_spinlock_val);                    \
 406                 }                                                       \
 407         } while (0)
 408
 409 #define _vmm_raw_spin_unlock(x)                         \
 410         do { barrier();                         \
 411                 ((vmm_spinlock_t *)x)->lock = 0; } \
 412 while (0)
 413 #endif
 414
 415 void vmm_spin_lock(vmm_spinlock_t *lock);
 416 void vmm_spin_unlock(vmm_spinlock_t *lock);
 417 enum {
 418         I_TLB = 1,
 419         D_TLB = 2
 420 };
 421
 422 union kvm_va {
 423         struct {
 424                 unsigned long off : 60;         /* intra-region offset */
 425                 unsigned long reg :  4;         /* region number */
 426         } f;
 427         unsigned long l;
 428         void *p;
 429 };
 430
 431 #define __kvm_pa(x)     ({union kvm_va _v; _v.l = (long) (x);           \
 432                                                 _v.f.reg = 0; _v.l; })
 433 #define __kvm_va(x)     ({union kvm_va _v; _v.l = (long) (x);           \
 434                                 _v.f.reg = -1; _v.p; })
 435
 436 #define _REGION_ID(x)           ({union ia64_rr _v; _v.val = (long)(x); \
 437                                                 _v.rid; })
 438 #define _REGION_PAGE_SIZE(x)    ({union ia64_rr _v; _v.val = (long)(x); \
 439                                                 _v.ps; })
 440 #define _REGION_HW_WALKER(x)    ({union ia64_rr _v; _v.val = (long)(x); \
 441                                                 _v.ve; })
 442
 443 enum vhpt_ref{ DATA_REF, NA_REF, INST_REF, RSE_REF };
 444 enum tlb_miss_type { INSTRUCTION, DATA, REGISTER };
 445
 446 #define VCPU(_v, _x) ((_v)->arch.vpd->_x)
 447 #define VMX(_v, _x)  ((_v)->arch._x)
 448
 449 #define VLSAPIC_INSVC(vcpu, i) ((vcpu)->arch.insvc[i])
 450 #define VLSAPIC_XTP(_v)        VMX(_v, xtp)
 451
 452 static inline unsigned long itir_ps(unsigned long itir)
 453 {
 454         return ((itir >> 2) & 0x3f);
 455 }
 456
 457
 458 /**************************************************************************
 459   VCPU control register access routines
 460  **************************************************************************/
 461
 462 static inline u64 vcpu_get_itir(struct kvm_vcpu *vcpu)
 463 {
 464         return ((u64)VCPU(vcpu, itir));
 465 }
 466
 467 static inline void vcpu_set_itir(struct kvm_vcpu *vcpu, u64 val)
 468 {
 469         VCPU(vcpu, itir) = val;
 470 }
 471
 472 static inline u64 vcpu_get_ifa(struct kvm_vcpu *vcpu)
 473 {
 474         return ((u64)VCPU(vcpu, ifa));
 475 }
 476
 477 static inline void vcpu_set_ifa(struct kvm_vcpu *vcpu, u64 val)
 478 {
 479         VCPU(vcpu, ifa) = val;
 480 }
 481
 482 static inline u64 vcpu_get_iva(struct kvm_vcpu *vcpu)
 483 {
 484         return ((u64)VCPU(vcpu, iva));
 485 }
 486
 487 static inline u64 vcpu_get_pta(struct kvm_vcpu *vcpu)
 488 {
 489         return ((u64)VCPU(vcpu, pta));
 490 }
 491
 492 static inline u64 vcpu_get_lid(struct kvm_vcpu *vcpu)
 493 {
 494         return ((u64)VCPU(vcpu, lid));
 495 }
 496
 497 static inline u64 vcpu_get_tpr(struct kvm_vcpu *vcpu)
 498 {
 499         return ((u64)VCPU(vcpu, tpr));
 500 }
 501
 502 static inline u64 vcpu_get_eoi(struct kvm_vcpu *vcpu)
 503 {
 504         return (0UL);           /*reads of eoi always return 0 */
 505 }
 506
 507 static inline u64 vcpu_get_irr0(struct kvm_vcpu *vcpu)
 508 {
 509         return ((u64)VCPU(vcpu, irr[0]));
 510 }
 511
 512 static inline u64 vcpu_get_irr1(struct kvm_vcpu *vcpu)
 513 {
 514         return ((u64)VCPU(vcpu, irr[1]));
 515 }
 516
 517 static inline u64 vcpu_get_irr2(struct kvm_vcpu *vcpu)
 518 {
 519         return ((u64)VCPU(vcpu, irr[2]));
 520 }
 521
 522 static inline u64 vcpu_get_irr3(struct kvm_vcpu *vcpu)
 523 {
 524         return ((u64)VCPU(vcpu, irr[3]));
 525 }
 526
 527 static inline void vcpu_set_dcr(struct kvm_vcpu *vcpu, u64 val)
 528 {
 529         ia64_setreg(_IA64_REG_CR_DCR, val);
 530 }
 531
 532 static inline void vcpu_set_isr(struct kvm_vcpu *vcpu, u64 val)
 533 {
 534         VCPU(vcpu, isr) = val;
 535 }
 536
 537 static inline void vcpu_set_lid(struct kvm_vcpu *vcpu, u64 val)
 538 {
 539         VCPU(vcpu, lid) = val;
 540 }
 541
 542 static inline void vcpu_set_ipsr(struct kvm_vcpu *vcpu, u64 val)
 543 {
 544         VCPU(vcpu, ipsr) = val;
 545 }
 546
 547 static inline void vcpu_set_iip(struct kvm_vcpu *vcpu, u64 val)
 548 {
 549         VCPU(vcpu, iip) = val;
 550 }
 551
 552 static inline void vcpu_set_ifs(struct kvm_vcpu *vcpu, u64 val)
 553 {
 554         VCPU(vcpu, ifs) = val;
 555 }
 556
 557 static inline void vcpu_set_iipa(struct kvm_vcpu *vcpu, u64 val)
 558 {
 559         VCPU(vcpu, iipa) = val;
 560 }
 561
 562 static inline void vcpu_set_iha(struct kvm_vcpu *vcpu, u64 val)
 563 {
 564         VCPU(vcpu, iha) = val;
 565 }
 566
 567
 568 static inline u64 vcpu_get_rr(struct kvm_vcpu *vcpu, u64 reg)
 569 {
 570         return vcpu->arch.vrr[reg>>61];
 571 }
 572
 573 /**************************************************************************
 574   VCPU debug breakpoint register access routines
 575  **************************************************************************/
 576
 577 static inline void vcpu_set_dbr(struct kvm_vcpu *vcpu, u64 reg, u64 val)
 578 {
 579         __ia64_set_dbr(reg, val);
 580 }
 581
 582 static inline void vcpu_set_ibr(struct kvm_vcpu *vcpu, u64 reg, u64 val)
 583 {
 584         ia64_set_ibr(reg, val);
 585 }
 586
 587 static inline u64 vcpu_get_dbr(struct kvm_vcpu *vcpu, u64 reg)
 588 {
 589         return ((u64)__ia64_get_dbr(reg));
 590 }
 591
 592 static inline u64 vcpu_get_ibr(struct kvm_vcpu *vcpu, u64 reg)
 593 {
 594         return ((u64)ia64_get_ibr(reg));
 595 }
 596
 597 /**************************************************************************
 598   VCPU performance monitor register access routines
 599  **************************************************************************/
 600 static inline void vcpu_set_pmc(struct kvm_vcpu *vcpu, u64 reg, u64 val)
 601 {
 602         /* NOTE: Writes to unimplemented PMC registers are discarded */
 603         ia64_set_pmc(reg, val);
 604 }
 605
 606 static inline void vcpu_set_pmd(struct kvm_vcpu *vcpu, u64 reg, u64 val)
 607 {
 608         /* NOTE: Writes to unimplemented PMD registers are discarded */
 609         ia64_set_pmd(reg, val);
 610 }
 611
 612 static inline u64 vcpu_get_pmc(struct kvm_vcpu *vcpu, u64 reg)
 613 {
 614         /* NOTE: Reads from unimplemented PMC registers return zero */
 615         return ((u64)ia64_get_pmc(reg));
 616 }
 617
 618 static inline u64 vcpu_get_pmd(struct kvm_vcpu *vcpu, u64 reg)
 619 {
 620         /* NOTE: Reads from unimplemented PMD registers return zero */
 621         return ((u64)ia64_get_pmd(reg));
 622 }
 623
 624 static inline unsigned long vrrtomrr(unsigned long val)
 625 {
 626         union ia64_rr rr;
 627         rr.val = val;
 628         rr.rid = (rr.rid << 4) | 0xe;
 629         if (rr.ps > PAGE_SHIFT)
 630                 rr.ps = PAGE_SHIFT;
 631         rr.ve = 1;
 632         return rr.val;
 633 }
 634
 635
 636 static inline int highest_bits(int *dat)
 637 {
 638         u32  bits, bitnum;
 639         int i;
 640
 641         /* loop for all 256 bits */
 642         for (i = 7; i >= 0 ; i--) {
 643                 bits = dat[i];
 644                 if (bits) {
 645                         bitnum = fls(bits);
 646                         return i * 32 + bitnum - 1;
 647                 }
 648         }
 649         return NULL_VECTOR;
 650 }
 651
 652 /*
 653  * The pending irq is higher than the inservice one.
 654  *
 655  */
 656 static inline int is_higher_irq(int pending, int inservice)
 657 {
 658         return ((pending > inservice)
 659                         || ((pending != NULL_VECTOR)
 660                                 && (inservice == NULL_VECTOR)));
 661 }
 662
 663 static inline int is_higher_class(int pending, int mic)
 664 {
 665         return ((pending >> 4) > mic);
 666 }
 667
 668 /*
 669  * Return 0-255 for pending irq.
 670  *        NULL_VECTOR: when no pending.
 671  */
 672 static inline int highest_pending_irq(struct kvm_vcpu *vcpu)
 673 {
 674         if (VCPU(vcpu, irr[0]) & (1UL<<NMI_VECTOR))
 675                 return NMI_VECTOR;
 676         if (VCPU(vcpu, irr[0]) & (1UL<<ExtINT_VECTOR))
 677                 return ExtINT_VECTOR;
 678
 679         return highest_bits((int *)&VCPU(vcpu, irr[0]));
 680 }
 681
 682 static inline int highest_inservice_irq(struct kvm_vcpu *vcpu)
 683 {
 684         if (VMX(vcpu, insvc[0]) & (1UL<<NMI_VECTOR))
 685                 return NMI_VECTOR;
 686         if (VMX(vcpu, insvc[0]) & (1UL<<ExtINT_VECTOR))
 687                 return ExtINT_VECTOR;
 688
 689         return highest_bits((int *)&(VMX(vcpu, insvc[0])));
 690 }
 691
 692 extern void vcpu_get_fpreg(struct kvm_vcpu *vcpu, unsigned long reg,
 693                                         struct ia64_fpreg *val);
 694 extern void vcpu_set_fpreg(struct kvm_vcpu *vcpu, unsigned long reg,
 695                                         struct ia64_fpreg *val);
 696 extern u64 vcpu_get_gr(struct kvm_vcpu *vcpu, unsigned long reg);
 697 extern void vcpu_set_gr(struct kvm_vcpu *vcpu, unsigned long reg,
 698                         u64 val, int nat);
 699 extern unsigned long vcpu_get_psr(struct kvm_vcpu *vcpu);
 700 extern void vcpu_set_psr(struct kvm_vcpu *vcpu, unsigned long val);
 701 extern u64 vcpu_thash(struct kvm_vcpu *vcpu, u64 vadr);
 702 extern void vcpu_bsw0(struct kvm_vcpu *vcpu);
 703 extern void thash_vhpt_insert(struct kvm_vcpu *v, u64 pte,
 704                                         u64 itir, u64 va, int type);
 705 extern struct thash_data *vhpt_lookup(u64 va);
 706 extern u64 guest_vhpt_lookup(u64 iha, u64 *pte);
 707 extern void thash_purge_entries(struct kvm_vcpu *v, u64 va, u64 ps);
 708 extern void thash_purge_entries_remote(struct kvm_vcpu *v, u64 va, u64 ps);
 709 extern u64 translate_phy_pte(u64 *pte, u64 itir, u64 va);
 710 extern void thash_purge_and_insert(struct kvm_vcpu *v, u64 pte,
 711                 u64 itir, u64 ifa, int type);
 712 extern void thash_purge_all(struct kvm_vcpu *v);
 713 extern struct thash_data *vtlb_lookup(struct kvm_vcpu *v,
 714                                                 u64 va, int is_data);
 715 extern int vtr_find_overlap(struct kvm_vcpu *vcpu, u64 va,
 716                                                 u64 ps, int is_data);
 717
 718 extern void vcpu_increment_iip(struct kvm_vcpu *v);
 719 extern void vcpu_decrement_iip(struct kvm_vcpu *vcpu);
 720 extern void vcpu_pend_interrupt(struct kvm_vcpu *vcpu, u8 vec);
 721 extern void vcpu_unpend_interrupt(struct kvm_vcpu *vcpu, u8 vec);
 722 extern void data_page_not_present(struct kvm_vcpu *vcpu, u64 vadr);
 723 extern void dnat_page_consumption(struct kvm_vcpu *vcpu, u64 vadr);
 724 extern void alt_dtlb(struct kvm_vcpu *vcpu, u64 vadr);
 725 extern void nested_dtlb(struct kvm_vcpu *vcpu);
 726 extern void dvhpt_fault(struct kvm_vcpu *vcpu, u64 vadr);
 727 extern int vhpt_enabled(struct kvm_vcpu *vcpu, u64 vadr, enum vhpt_ref ref);
 728
 729 extern void update_vhpi(struct kvm_vcpu *vcpu, int vec);
 730 extern int irq_masked(struct kvm_vcpu *vcpu, int h_pending, int h_inservice);
 731
 732 extern int fetch_code(struct kvm_vcpu *vcpu, u64 gip, IA64_BUNDLE *pbundle);
 733 extern void emulate_io_inst(struct kvm_vcpu *vcpu, u64 padr, u64 ma);
 734 extern void vmm_transition(struct kvm_vcpu *vcpu);
 735 extern void vmm_trampoline(union context *from, union context *to);
 736 extern int vmm_entry(void);
 737 extern  u64 vcpu_get_itc(struct kvm_vcpu *vcpu);
 738
 739 extern void vmm_reset_entry(void);
 740 void kvm_init_vtlb(struct kvm_vcpu *v);
 741 void kvm_init_vhpt(struct kvm_vcpu *v);
 742 void thash_init(struct thash_cb *hcb, u64 sz);
 743
 744 void panic_vm(struct kvm_vcpu *v, const char *fmt, ...);
 745 u64 kvm_gpa_to_mpa(u64 gpa);
 746 extern u64 ia64_call_vsa(u64 proc, u64 arg1, u64 arg2, u64 arg3,
 747                 u64 arg4, u64 arg5, u64 arg6, u64 arg7);
 748
 749 extern long vmm_sanity;
 750
 751 #endif
 752 #endif  /* __VCPU_H__ */