target/s390x/cpu.h

   1 /*
   2  * S/390 virtual CPU header
   3  *
   4  *  Copyright (c) 2009 Ulrich Hecht
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * Contributions after 2012-10-29 are licensed under the terms of the
  17  * GNU GPL, version 2 or (at your option) any later version.
  18  *
  19  * You should have received a copy of the GNU (Lesser) General Public
  20  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #ifndef S390X_CPU_H
  24 #define S390X_CPU_H
  25
  26 #include "qemu-common.h"
  27 #include "cpu-qom.h"
  28 #include "cpu_models.h"
  29
  30 #define TARGET_LONG_BITS 64
  31
  32 #define ELF_MACHINE_UNAME "S390X"
  33
  34 #define CPUArchState struct CPUS390XState
  35
  36 #include "exec/cpu-defs.h"
  37 #define TARGET_PAGE_BITS 12
  38
  39 #define TARGET_PHYS_ADDR_SPACE_BITS 64
  40 #define TARGET_VIRT_ADDR_SPACE_BITS 64
  41
  42 #include "exec/cpu-all.h"
  43
  44 #include "fpu/softfloat.h"
  45
  46 #define NB_MMU_MODES 4
  47 #define TARGET_INSN_START_EXTRA_WORDS 1
  48
  49 #define MMU_MODE0_SUFFIX _primary
  50 #define MMU_MODE1_SUFFIX _secondary
  51 #define MMU_MODE2_SUFFIX _home
  52 #define MMU_MODE3_SUFFIX _real
  53
  54 #define MMU_USER_IDX 0
  55
  56 #define MAX_EXT_QUEUE 16
  57 #define MAX_IO_QUEUE 16
  58 #define MAX_MCHK_QUEUE 16
  59
  60 #define PSW_MCHK_MASK 0x0004000000000000
  61 #define PSW_IO_MASK 0x0200000000000000
  62
  63 #define S390_MAX_CPUS 248
  64
  65 typedef struct PSW {
  66     uint64_t mask;
  67     uint64_t addr;
  68 } PSW;
  69
  70 typedef struct ExtQueue {
  71     uint32_t code;
  72     uint32_t param;
  73     uint32_t param64;
  74 } ExtQueue;
  75
  76 typedef struct IOIntQueue {
  77     uint16_t id;
  78     uint16_t nr;
  79     uint32_t parm;
  80     uint32_t word;
  81 } IOIntQueue;
  82
  83 typedef struct MchkQueue {
  84     uint16_t type;
  85 } MchkQueue;
  86
  87 struct CPUS390XState {
  88     uint64_t regs[16];     /* GP registers */
  89     /*
  90      * The floating point registers are part of the vector registers.
  91      * vregs[0][0] -> vregs[15][0] are 16 floating point registers
  92      */
  93     CPU_DoubleU vregs[32][2];  /* vector registers */
  94     uint32_t aregs[16];    /* access registers */
  95     uint8_t riccb[64];     /* runtime instrumentation control */
  96     uint64_t gscb[4];      /* guarded storage control */
  97
  98     /* Fields up to this point are not cleared by initial CPU reset */
  99     struct {} start_initial_reset_fields;
 100
 101     uint32_t fpc;          /* floating-point control register */
 102     uint32_t cc_op;
 103
 104     float_status fpu_status; /* passed to softfloat lib */
 105
 106     /* The low part of a 128-bit return, or remainder of a divide.  */
 107     uint64_t retxl;
 108
 109     PSW psw;
 110
 111     uint64_t cc_src;
 112     uint64_t cc_dst;
 113     uint64_t cc_vr;
 114
 115     uint64_t ex_value;
 116
 117     uint64_t __excp_addr;
 118     uint64_t psa;
 119
 120     uint32_t int_pgm_code;
 121     uint32_t int_pgm_ilen;
 122
 123     uint32_t int_svc_code;
 124     uint32_t int_svc_ilen;
 125
 126     uint64_t per_address;
 127     uint16_t per_perc_atmid;
 128
 129     uint64_t cregs[16]; /* control registers */
 130
 131     ExtQueue ext_queue[MAX_EXT_QUEUE];
 132     IOIntQueue io_queue[MAX_IO_QUEUE][8];
 133     MchkQueue mchk_queue[MAX_MCHK_QUEUE];
 134
 135     int pending_int;
 136     int ext_index;
 137     int io_index[8];
 138     int mchk_index;
 139
 140     uint64_t ckc;
 141     uint64_t cputm;
 142     uint32_t todpr;
 143
 144     uint64_t pfault_token;
 145     uint64_t pfault_compare;
 146     uint64_t pfault_select;
 147
 148     uint64_t gbea;
 149     uint64_t pp;
 150
 151     /* Fields up to this point are cleared by a CPU reset */
 152     struct {} end_reset_fields;
 153
 154     CPU_COMMON
 155
 156 #if !defined(CONFIG_USER_ONLY)
 157     uint32_t core_id; /* PoP "CPU address", same as cpu_index */
 158     uint64_t cpuid;
 159 #endif
 160
 161     uint64_t tod_offset;
 162     uint64_t tod_basetime;
 163     QEMUTimer *tod_timer;
 164
 165     QEMUTimer *cpu_timer;
 166
 167     /*
 168      * The cpu state represents the logical state of a cpu. In contrast to other
 169      * architectures, there is a difference between a halt and a stop on s390.
 170      * If all cpus are either stopped (including check stop) or in the disabled
 171      * wait state, the vm can be shut down.
 172      */
 173 #define CPU_STATE_UNINITIALIZED        0x00
 174 #define CPU_STATE_STOPPED              0x01
 175 #define CPU_STATE_CHECK_STOP           0x02
 176 #define CPU_STATE_OPERATING            0x03
 177 #define CPU_STATE_LOAD                 0x04
 178     uint8_t cpu_state;
 179
 180     /* currently processed sigp order */
 181     uint8_t sigp_order;
 182
 183 };
 184
 185 static inline CPU_DoubleU *get_freg(CPUS390XState *cs, int nr)
 186 {
 187     return &cs->vregs[nr][0];
 188 }
 189
 190 /**
 191  * S390CPU:
 192  * @env: #CPUS390XState.
 193  *
 194  * An S/390 CPU.
 195  */
 196 struct S390CPU {
 197     /*< private >*/
 198     CPUState parent_obj;
 199     /*< public >*/
 200
 201     CPUS390XState env;
 202     S390CPUModel *model;
 203     /* needed for live migration */
 204     void *irqstate;
 205     uint32_t irqstate_saved_size;
 206 };
 207
 208 static inline S390CPU *s390_env_get_cpu(CPUS390XState *env)
 209 {
 210     return container_of(env, S390CPU, env);
 211 }
 212
 213 #define ENV_GET_CPU(e) CPU(s390_env_get_cpu(e))
 214
 215 #define ENV_OFFSET offsetof(S390CPU, env)
 216
 217 #ifndef CONFIG_USER_ONLY
 218 extern const struct VMStateDescription vmstate_s390_cpu;
 219 #endif
 220
 221 /* distinguish between 24 bit and 31 bit addressing */
 222 #define HIGH_ORDER_BIT 0x80000000
 223
 224 /* Interrupt Codes */
 225 /* Program Interrupts */
 226 #define PGM_OPERATION                   0x0001
 227 #define PGM_PRIVILEGED                  0x0002
 228 #define PGM_EXECUTE                     0x0003
 229 #define PGM_PROTECTION                  0x0004
 230 #define PGM_ADDRESSING                  0x0005
 231 #define PGM_SPECIFICATION               0x0006
 232 #define PGM_DATA                        0x0007
 233 #define PGM_FIXPT_OVERFLOW              0x0008
 234 #define PGM_FIXPT_DIVIDE                0x0009
 235 #define PGM_DEC_OVERFLOW                0x000a
 236 #define PGM_DEC_DIVIDE                  0x000b
 237 #define PGM_HFP_EXP_OVERFLOW            0x000c
 238 #define PGM_HFP_EXP_UNDERFLOW           0x000d
 239 #define PGM_HFP_SIGNIFICANCE            0x000e
 240 #define PGM_HFP_DIVIDE                  0x000f
 241 #define PGM_SEGMENT_TRANS               0x0010
 242 #define PGM_PAGE_TRANS                  0x0011
 243 #define PGM_TRANS_SPEC                  0x0012
 244 #define PGM_SPECIAL_OP                  0x0013
 245 #define PGM_OPERAND                     0x0015
 246 #define PGM_TRACE_TABLE                 0x0016
 247 #define PGM_SPACE_SWITCH                0x001c
 248 #define PGM_HFP_SQRT                    0x001d
 249 #define PGM_PC_TRANS_SPEC               0x001f
 250 #define PGM_AFX_TRANS                   0x0020
 251 #define PGM_ASX_TRANS                   0x0021
 252 #define PGM_LX_TRANS                    0x0022
 253 #define PGM_EX_TRANS                    0x0023
 254 #define PGM_PRIM_AUTH                   0x0024
 255 #define PGM_SEC_AUTH                    0x0025
 256 #define PGM_ALET_SPEC                   0x0028
 257 #define PGM_ALEN_SPEC                   0x0029
 258 #define PGM_ALE_SEQ                     0x002a
 259 #define PGM_ASTE_VALID                  0x002b
 260 #define PGM_ASTE_SEQ                    0x002c
 261 #define PGM_EXT_AUTH                    0x002d
 262 #define PGM_STACK_FULL                  0x0030
 263 #define PGM_STACK_EMPTY                 0x0031
 264 #define PGM_STACK_SPEC                  0x0032
 265 #define PGM_STACK_TYPE                  0x0033
 266 #define PGM_STACK_OP                    0x0034
 267 #define PGM_ASCE_TYPE                   0x0038
 268 #define PGM_REG_FIRST_TRANS             0x0039
 269 #define PGM_REG_SEC_TRANS               0x003a
 270 #define PGM_REG_THIRD_TRANS             0x003b
 271 #define PGM_MONITOR                     0x0040
 272 #define PGM_PER                         0x0080
 273 #define PGM_CRYPTO                      0x0119
 274
 275 /* External Interrupts */
 276 #define EXT_INTERRUPT_KEY               0x0040
 277 #define EXT_CLOCK_COMP                  0x1004
 278 #define EXT_CPU_TIMER                   0x1005
 279 #define EXT_MALFUNCTION                 0x1200
 280 #define EXT_EMERGENCY                   0x1201
 281 #define EXT_EXTERNAL_CALL               0x1202
 282 #define EXT_ETR                         0x1406
 283 #define EXT_SERVICE                     0x2401
 284 #define EXT_VIRTIO                      0x2603
 285
 286 /* PSW defines */
 287 #undef PSW_MASK_PER
 288 #undef PSW_MASK_DAT
 289 #undef PSW_MASK_IO
 290 #undef PSW_MASK_EXT
 291 #undef PSW_MASK_KEY
 292 #undef PSW_SHIFT_KEY
 293 #undef PSW_MASK_MCHECK
 294 #undef PSW_MASK_WAIT
 295 #undef PSW_MASK_PSTATE
 296 #undef PSW_MASK_ASC
 297 #undef PSW_SHIFT_ASC
 298 #undef PSW_MASK_CC
 299 #undef PSW_MASK_PM
 300 #undef PSW_SHIFT_MASK_PM
 301 #undef PSW_MASK_64
 302 #undef PSW_MASK_32
 303 #undef PSW_MASK_ESA_ADDR
 304
 305 #define PSW_MASK_PER            0x4000000000000000ULL
 306 #define PSW_MASK_DAT            0x0400000000000000ULL
 307 #define PSW_MASK_IO             0x0200000000000000ULL
 308 #define PSW_MASK_EXT            0x0100000000000000ULL
 309 #define PSW_MASK_KEY            0x00F0000000000000ULL
 310 #define PSW_SHIFT_KEY           52
 311 #define PSW_MASK_MCHECK         0x0004000000000000ULL
 312 #define PSW_MASK_WAIT           0x0002000000000000ULL
 313 #define PSW_MASK_PSTATE         0x0001000000000000ULL
 314 #define PSW_MASK_ASC            0x0000C00000000000ULL
 315 #define PSW_SHIFT_ASC           46
 316 #define PSW_MASK_CC             0x0000300000000000ULL
 317 #define PSW_MASK_PM             0x00000F0000000000ULL
 318 #define PSW_SHIFT_MASK_PM       40
 319 #define PSW_MASK_64             0x0000000100000000ULL
 320 #define PSW_MASK_32             0x0000000080000000ULL
 321 #define PSW_MASK_ESA_ADDR       0x000000007fffffffULL
 322
 323 #undef PSW_ASC_PRIMARY
 324 #undef PSW_ASC_ACCREG
 325 #undef PSW_ASC_SECONDARY
 326 #undef PSW_ASC_HOME
 327
 328 #define PSW_ASC_PRIMARY         0x0000000000000000ULL
 329 #define PSW_ASC_ACCREG          0x0000400000000000ULL
 330 #define PSW_ASC_SECONDARY       0x0000800000000000ULL
 331 #define PSW_ASC_HOME            0x0000C00000000000ULL
 332
 333 /* the address space values shifted */
 334 #define AS_PRIMARY              0
 335 #define AS_ACCREG               1
 336 #define AS_SECONDARY            2
 337 #define AS_HOME                 3
 338
 339 /* tb flags */
 340
 341 #define FLAG_MASK_PSW_SHIFT     31
 342 #define FLAG_MASK_PER           (PSW_MASK_PER    >> FLAG_MASK_PSW_SHIFT)
 343 #define FLAG_MASK_PSTATE        (PSW_MASK_PSTATE >> FLAG_MASK_PSW_SHIFT)
 344 #define FLAG_MASK_ASC           (PSW_MASK_ASC    >> FLAG_MASK_PSW_SHIFT)
 345 #define FLAG_MASK_64            (PSW_MASK_64     >> FLAG_MASK_PSW_SHIFT)
 346 #define FLAG_MASK_32            (PSW_MASK_32     >> FLAG_MASK_PSW_SHIFT)
 347 #define FLAG_MASK_PSW           (FLAG_MASK_PER | FLAG_MASK_PSTATE \
 348                                 | FLAG_MASK_ASC | FLAG_MASK_64 | FLAG_MASK_32)
 349
 350 /* Control register 0 bits */
 351 #define CR0_LOWPROT             0x0000000010000000ULL
 352 #define CR0_SECONDARY           0x0000000004000000ULL
 353 #define CR0_EDAT                0x0000000000800000ULL
 354
 355 /* MMU */
 356 #define MMU_PRIMARY_IDX         0
 357 #define MMU_SECONDARY_IDX       1
 358 #define MMU_HOME_IDX            2
 359 #define MMU_REAL_IDX            3
 360
 361 static inline int cpu_mmu_index(CPUS390XState *env, bool ifetch)
 362 {
 363     switch (env->psw.mask & PSW_MASK_ASC) {
 364     case PSW_ASC_PRIMARY:
 365         return MMU_PRIMARY_IDX;
 366     case PSW_ASC_SECONDARY:
 367         return MMU_SECONDARY_IDX;
 368     case PSW_ASC_HOME:
 369         return MMU_HOME_IDX;
 370     case PSW_ASC_ACCREG:
 371         /* Fallthrough: access register mode is not yet supported */
 372     default:
 373         abort();
 374     }
 375 }
 376
 377 static inline void cpu_get_tb_cpu_state(CPUS390XState* env, target_ulong *pc,
 378                                         target_ulong *cs_base, uint32_t *flags)
 379 {
 380     *pc = env->psw.addr;
 381     *cs_base = env->ex_value;
 382     *flags = (env->psw.mask >> FLAG_MASK_PSW_SHIFT) & FLAG_MASK_PSW;
 383 }
 384
 385 /* PER bits from control register 9 */
 386 #define PER_CR9_EVENT_BRANCH           0x80000000
 387 #define PER_CR9_EVENT_IFETCH           0x40000000
 388 #define PER_CR9_EVENT_STORE            0x20000000
 389 #define PER_CR9_EVENT_STORE_REAL       0x08000000
 390 #define PER_CR9_EVENT_NULLIFICATION    0x01000000
 391 #define PER_CR9_CONTROL_BRANCH_ADDRESS 0x00800000
 392 #define PER_CR9_CONTROL_ALTERATION     0x00200000
 393
 394 /* PER bits from the PER CODE/ATMID/AI in lowcore */
 395 #define PER_CODE_EVENT_BRANCH          0x8000
 396 #define PER_CODE_EVENT_IFETCH          0x4000
 397 #define PER_CODE_EVENT_STORE           0x2000
 398 #define PER_CODE_EVENT_STORE_REAL      0x0800
 399 #define PER_CODE_EVENT_NULLIFICATION   0x0100
 400
 401 #define EXCP_EXT 1 /* external interrupt */
 402 #define EXCP_SVC 2 /* supervisor call (syscall) */
 403 #define EXCP_PGM 3 /* program interruption */
 404 #define EXCP_IO  7 /* I/O interrupt */
 405 #define EXCP_MCHK 8 /* machine check */
 406
 407 #define INTERRUPT_EXT        (1 << 0)
 408 #define INTERRUPT_TOD        (1 << 1)
 409 #define INTERRUPT_CPUTIMER   (1 << 2)
 410 #define INTERRUPT_IO         (1 << 3)
 411 #define INTERRUPT_MCHK       (1 << 4)
 412
 413 /* Program Status Word.  */
 414 #define S390_PSWM_REGNUM 0
 415 #define S390_PSWA_REGNUM 1
 416 /* General Purpose Registers.  */
 417 #define S390_R0_REGNUM 2
 418 #define S390_R1_REGNUM 3
 419 #define S390_R2_REGNUM 4
 420 #define S390_R3_REGNUM 5
 421 #define S390_R4_REGNUM 6
 422 #define S390_R5_REGNUM 7
 423 #define S390_R6_REGNUM 8
 424 #define S390_R7_REGNUM 9
 425 #define S390_R8_REGNUM 10
 426 #define S390_R9_REGNUM 11
 427 #define S390_R10_REGNUM 12
 428 #define S390_R11_REGNUM 13
 429 #define S390_R12_REGNUM 14
 430 #define S390_R13_REGNUM 15
 431 #define S390_R14_REGNUM 16
 432 #define S390_R15_REGNUM 17
 433 /* Total Core Registers. */
 434 #define S390_NUM_CORE_REGS 18
 435
 436 static inline void setcc(S390CPU *cpu, uint64_t cc)
 437 {
 438     CPUS390XState *env = &cpu->env;
 439
 440     env->psw.mask &= ~(3ull << 44);
 441     env->psw.mask |= (cc & 3) << 44;
 442     env->cc_op = cc;
 443 }
 444
 445 /* STSI */
 446 #define STSI_LEVEL_MASK         0x00000000f0000000ULL
 447 #define STSI_LEVEL_CURRENT      0x0000000000000000ULL
 448 #define STSI_LEVEL_1            0x0000000010000000ULL
 449 #define STSI_LEVEL_2            0x0000000020000000ULL
 450 #define STSI_LEVEL_3            0x0000000030000000ULL
 451 #define STSI_R0_RESERVED_MASK   0x000000000fffff00ULL
 452 #define STSI_R0_SEL1_MASK       0x00000000000000ffULL
 453 #define STSI_R1_RESERVED_MASK   0x00000000ffff0000ULL
 454 #define STSI_R1_SEL2_MASK       0x000000000000ffffULL
 455
 456 /* Basic Machine Configuration */
 457 struct sysib_111 {
 458     uint32_t res1[8];
 459     uint8_t  manuf[16];
 460     uint8_t  type[4];
 461     uint8_t  res2[12];
 462     uint8_t  model[16];
 463     uint8_t  sequence[16];
 464     uint8_t  plant[4];
 465     uint8_t  res3[156];
 466 };
 467
 468 /* Basic Machine CPU */
 469 struct sysib_121 {
 470     uint32_t res1[80];
 471     uint8_t  sequence[16];
 472     uint8_t  plant[4];
 473     uint8_t  res2[2];
 474     uint16_t cpu_addr;
 475     uint8_t  res3[152];
 476 };
 477
 478 /* Basic Machine CPUs */
 479 struct sysib_122 {
 480     uint8_t res1[32];
 481     uint32_t capability;
 482     uint16_t total_cpus;
 483     uint16_t active_cpus;
 484     uint16_t standby_cpus;
 485     uint16_t reserved_cpus;
 486     uint16_t adjustments[2026];
 487 };
 488
 489 /* LPAR CPU */
 490 struct sysib_221 {
 491     uint32_t res1[80];
 492     uint8_t  sequence[16];
 493     uint8_t  plant[4];
 494     uint16_t cpu_id;
 495     uint16_t cpu_addr;
 496     uint8_t  res3[152];
 497 };
 498
 499 /* LPAR CPUs */
 500 struct sysib_222 {
 501     uint32_t res1[32];
 502     uint16_t lpar_num;
 503     uint8_t  res2;
 504     uint8_t  lcpuc;
 505     uint16_t total_cpus;
 506     uint16_t conf_cpus;
 507     uint16_t standby_cpus;
 508     uint16_t reserved_cpus;
 509     uint8_t  name[8];
 510     uint32_t caf;
 511     uint8_t  res3[16];
 512     uint16_t dedicated_cpus;
 513     uint16_t shared_cpus;
 514     uint8_t  res4[180];
 515 };
 516
 517 /* VM CPUs */
 518 struct sysib_322 {
 519     uint8_t  res1[31];
 520     uint8_t  count;
 521     struct {
 522         uint8_t  res2[4];
 523         uint16_t total_cpus;
 524         uint16_t conf_cpus;
 525         uint16_t standby_cpus;
 526         uint16_t reserved_cpus;
 527         uint8_t  name[8];
 528         uint32_t caf;
 529         uint8_t  cpi[16];
 530         uint8_t res5[3];
 531         uint8_t ext_name_encoding;
 532         uint32_t res3;
 533         uint8_t uuid[16];
 534     } vm[8];
 535     uint8_t res4[1504];
 536     uint8_t ext_names[8][256];
 537 };
 538
 539 /* MMU defines */
 540 #define _ASCE_ORIGIN            ~0xfffULL /* segment table origin             */
 541 #define _ASCE_SUBSPACE          0x200     /* subspace group control           */
 542 #define _ASCE_PRIVATE_SPACE     0x100     /* private space control            */
 543 #define _ASCE_ALT_EVENT         0x80      /* storage alteration event control */
 544 #define _ASCE_SPACE_SWITCH      0x40      /* space switch event               */
 545 #define _ASCE_REAL_SPACE        0x20      /* real space control               */
 546 #define _ASCE_TYPE_MASK         0x0c      /* asce table type mask             */
 547 #define _ASCE_TYPE_REGION1      0x0c      /* region first table type          */
 548 #define _ASCE_TYPE_REGION2      0x08      /* region second table type         */
 549 #define _ASCE_TYPE_REGION3      0x04      /* region third table type          */
 550 #define _ASCE_TYPE_SEGMENT      0x00      /* segment table type               */
 551 #define _ASCE_TABLE_LENGTH      0x03      /* region table length              */
 552
 553 #define _REGION_ENTRY_ORIGIN    ~0xfffULL /* region/segment table origin      */
 554 #define _REGION_ENTRY_RO        0x200     /* region/segment protection bit    */
 555 #define _REGION_ENTRY_TF        0xc0      /* region/segment table offset      */
 556 #define _REGION_ENTRY_INV       0x20      /* invalid region table entry       */
 557 #define _REGION_ENTRY_TYPE_MASK 0x0c      /* region/segment table type mask   */
 558 #define _REGION_ENTRY_TYPE_R1   0x0c      /* region first table type          */
 559 #define _REGION_ENTRY_TYPE_R2   0x08      /* region second table type         */
 560 #define _REGION_ENTRY_TYPE_R3   0x04      /* region third table type          */
 561 #define _REGION_ENTRY_LENGTH    0x03      /* region third length              */
 562
 563 #define _SEGMENT_ENTRY_ORIGIN   ~0x7ffULL /* segment table origin             */
 564 #define _SEGMENT_ENTRY_FC       0x400     /* format control                   */
 565 #define _SEGMENT_ENTRY_RO       0x200     /* page protection bit              */
 566 #define _SEGMENT_ENTRY_INV      0x20      /* invalid segment table entry      */
 567
 568 #define VADDR_PX                0xff000   /* page index bits                  */
 569
 570 #define _PAGE_RO        0x200            /* HW read-only bit  */
 571 #define _PAGE_INVALID   0x400            /* HW invalid bit    */
 572 #define _PAGE_RES0      0x800            /* bit must be zero  */
 573
 574 #define SK_C                    (0x1 << 1)
 575 #define SK_R                    (0x1 << 2)
 576 #define SK_F                    (0x1 << 3)
 577 #define SK_ACC_MASK             (0xf << 4)
 578
 579 /* SIGP order codes */
 580 #define SIGP_SENSE             0x01
 581 #define SIGP_EXTERNAL_CALL     0x02
 582 #define SIGP_EMERGENCY         0x03
 583 #define SIGP_START             0x04
 584 #define SIGP_STOP              0x05
 585 #define SIGP_RESTART           0x06
 586 #define SIGP_STOP_STORE_STATUS 0x09
 587 #define SIGP_INITIAL_CPU_RESET 0x0b
 588 #define SIGP_CPU_RESET         0x0c
 589 #define SIGP_SET_PREFIX        0x0d
 590 #define SIGP_STORE_STATUS_ADDR 0x0e
 591 #define SIGP_SET_ARCH          0x12
 592 #define SIGP_STORE_ADTL_STATUS 0x17
 593
 594 /* SIGP condition codes */
 595 #define SIGP_CC_ORDER_CODE_ACCEPTED 0
 596 #define SIGP_CC_STATUS_STORED       1
 597 #define SIGP_CC_BUSY                2
 598 #define SIGP_CC_NOT_OPERATIONAL     3
 599
 600 /* SIGP status bits */
 601 #define SIGP_STAT_EQUIPMENT_CHECK   0x80000000UL
 602 #define SIGP_STAT_INCORRECT_STATE   0x00000200UL
 603 #define SIGP_STAT_INVALID_PARAMETER 0x00000100UL
 604 #define SIGP_STAT_EXT_CALL_PENDING  0x00000080UL
 605 #define SIGP_STAT_STOPPED           0x00000040UL
 606 #define SIGP_STAT_OPERATOR_INTERV   0x00000020UL
 607 #define SIGP_STAT_CHECK_STOP        0x00000010UL
 608 #define SIGP_STAT_INOPERATIVE       0x00000004UL
 609 #define SIGP_STAT_INVALID_ORDER     0x00000002UL
 610 #define SIGP_STAT_RECEIVER_CHECK    0x00000001UL
 611
 612 /* SIGP SET ARCHITECTURE modes */
 613 #define SIGP_MODE_ESA_S390 0
 614 #define SIGP_MODE_Z_ARCH_TRANS_ALL_PSW 1
 615 #define SIGP_MODE_Z_ARCH_TRANS_CUR_PSW 2
 616
 617 /* SIGP order code mask corresponding to bit positions 56-63 */
 618 #define SIGP_ORDER_MASK 0x000000ff
 619
 620 /* from s390-virtio-ccw */
 621 #define MEM_SECTION_SIZE             0x10000000UL
 622 #define MAX_AVAIL_SLOTS              32
 623
 624 /* machine check interruption code */
 625
 626 /* subclasses */
 627 #define MCIC_SC_SD 0x8000000000000000ULL
 628 #define MCIC_SC_PD 0x4000000000000000ULL
 629 #define MCIC_SC_SR 0x2000000000000000ULL
 630 #define MCIC_SC_CD 0x0800000000000000ULL
 631 #define MCIC_SC_ED 0x0400000000000000ULL
 632 #define MCIC_SC_DG 0x0100000000000000ULL
 633 #define MCIC_SC_W  0x0080000000000000ULL
 634 #define MCIC_SC_CP 0x0040000000000000ULL
 635 #define MCIC_SC_SP 0x0020000000000000ULL
 636 #define MCIC_SC_CK 0x0010000000000000ULL
 637
 638 /* subclass modifiers */
 639 #define MCIC_SCM_B  0x0002000000000000ULL
 640 #define MCIC_SCM_DA 0x0000000020000000ULL
 641 #define MCIC_SCM_AP 0x0000000000080000ULL
 642
 643 /* storage errors */
 644 #define MCIC_SE_SE 0x0000800000000000ULL
 645 #define MCIC_SE_SC 0x0000400000000000ULL
 646 #define MCIC_SE_KE 0x0000200000000000ULL
 647 #define MCIC_SE_DS 0x0000100000000000ULL
 648 #define MCIC_SE_IE 0x0000000080000000ULL
 649
 650 /* validity bits */
 651 #define MCIC_VB_WP 0x0000080000000000ULL
 652 #define MCIC_VB_MS 0x0000040000000000ULL
 653 #define MCIC_VB_PM 0x0000020000000000ULL
 654 #define MCIC_VB_IA 0x0000010000000000ULL
 655 #define MCIC_VB_FA 0x0000008000000000ULL
 656 #define MCIC_VB_VR 0x0000004000000000ULL
 657 #define MCIC_VB_EC 0x0000002000000000ULL
 658 #define MCIC_VB_FP 0x0000001000000000ULL
 659 #define MCIC_VB_GR 0x0000000800000000ULL
 660 #define MCIC_VB_CR 0x0000000400000000ULL
 661 #define MCIC_VB_ST 0x0000000100000000ULL
 662 #define MCIC_VB_AR 0x0000000040000000ULL
 663 #define MCIC_VB_GS 0x0000000008000000ULL
 664 #define MCIC_VB_PR 0x0000000000200000ULL
 665 #define MCIC_VB_FC 0x0000000000100000ULL
 666 #define MCIC_VB_CT 0x0000000000020000ULL
 667 #define MCIC_VB_CC 0x0000000000010000ULL
 668
 669
 670 /* cpu.c */
 671 int s390_get_clock(uint8_t *tod_high, uint64_t *tod_low);
 672 int s390_set_clock(uint8_t *tod_high, uint64_t *tod_low);
 673 void s390_crypto_reset(void);
 674 bool s390_get_squash_mcss(void);
 675 int s390_get_memslot_count(void);
 676 int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit);
 677 void s390_cmma_reset(void);
 678 int s390_cpu_restart(S390CPU *cpu);
 679 void s390_enable_css_support(S390CPU *cpu);
 680 int s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch_id,
 681                                 int vq, bool assign);
 682 #ifndef CONFIG_USER_ONLY
 683 unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu);
 684 #else
 685 static inline unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
 686 {
 687     return 0;
 688 }
 689 #endif /* CONFIG_USER_ONLY */
 690
 691
 692 /* cpu_models.c */
 693 void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 694 #define cpu_list s390_cpu_list
 695
 696 /* helper.c */
 697 #define cpu_init(cpu_model) cpu_generic_init(TYPE_S390_CPU, cpu_model)
 698 S390CPU *s390x_new_cpu(const char *typename, uint32_t core_id, Error **errp);
 699
 700 #define S390_CPU_TYPE_SUFFIX "-" TYPE_S390_CPU
 701 #define S390_CPU_TYPE_NAME(name) (name S390_CPU_TYPE_SUFFIX)
 702
 703 /* you can call this signal handler from your SIGBUS and SIGSEGV
 704    signal handlers to inform the virtual CPU of exceptions. non zero
 705    is returned if the signal was handled by the virtual CPU.  */
 706 int cpu_s390x_signal_handler(int host_signum, void *pinfo, void *puc);
 707 #define cpu_signal_handler cpu_s390x_signal_handler
 708
 709
 710 /* interrupt.c */
 711 void s390_crw_mchk(void);
 712 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
 713                        uint32_t io_int_parm, uint32_t io_int_word);
 714 /* automatically detect the instruction length */
 715 #define ILEN_AUTO                   0xff
 716 void program_interrupt(CPUS390XState *env, uint32_t code, int ilen);
 717 /* service interrupts are floating therefore we must not pass an cpustate */
 718 void s390_sclp_extint(uint32_t parm);
 719
 720
 721 /* mmu_helper.c */
 722 int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
 723                          int len, bool is_write);
 724 #define s390_cpu_virt_mem_read(cpu, laddr, ar, dest, len)    \
 725         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, false)
 726 #define s390_cpu_virt_mem_write(cpu, laddr, ar, dest, len)       \
 727         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, true)
 728 #define s390_cpu_virt_mem_check_write(cpu, laddr, ar, len)   \
 729         s390_cpu_virt_mem_rw(cpu, laddr, ar, NULL, len, true)
 730
 731
 732 /* outside of target/s390x/ */
 733 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
 734
 735 #endif