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
  29 #define TARGET_LONG_BITS 64
  30
  31 #define ELF_MACHINE_UNAME "S390X"
  32
  33 #define CPUArchState struct CPUS390XState
  34
  35 #include "exec/cpu-defs.h"
  36 #define TARGET_PAGE_BITS 12
  37
  38 #define TARGET_PHYS_ADDR_SPACE_BITS 64
  39 #define TARGET_VIRT_ADDR_SPACE_BITS 64
  40
  41 #include "exec/cpu-all.h"
  42
  43 #include "fpu/softfloat.h"
  44
  45 #define NB_MMU_MODES 3
  46 #define TARGET_INSN_START_EXTRA_WORDS 1
  47
  48 #define MMU_MODE0_SUFFIX _primary
  49 #define MMU_MODE1_SUFFIX _secondary
  50 #define MMU_MODE2_SUFFIX _home
  51
  52 #define MMU_USER_IDX 0
  53
  54 #define MAX_EXT_QUEUE 16
  55 #define MAX_IO_QUEUE 16
  56 #define MAX_MCHK_QUEUE 16
  57
  58 #define PSW_MCHK_MASK 0x0004000000000000
  59 #define PSW_IO_MASK 0x0200000000000000
  60
  61 typedef struct PSW {
  62     uint64_t mask;
  63     uint64_t addr;
  64 } PSW;
  65
  66 typedef struct ExtQueue {
  67     uint32_t code;
  68     uint32_t param;
  69     uint32_t param64;
  70 } ExtQueue;
  71
  72 typedef struct IOIntQueue {
  73     uint16_t id;
  74     uint16_t nr;
  75     uint32_t parm;
  76     uint32_t word;
  77 } IOIntQueue;
  78
  79 typedef struct MchkQueue {
  80     uint16_t type;
  81 } MchkQueue;
  82
  83 typedef struct CPUS390XState {
  84     uint64_t regs[16];     /* GP registers */
  85     /*
  86      * The floating point registers are part of the vector registers.
  87      * vregs[0][0] -> vregs[15][0] are 16 floating point registers
  88      */
  89     CPU_DoubleU vregs[32][2];  /* vector registers */
  90     uint32_t aregs[16];    /* access registers */
  91     uint8_t riccb[64];     /* runtime instrumentation control */
  92     uint64_t gscb[4];      /* guarded storage control */
  93
  94     /* Fields up to this point are not cleared by initial CPU reset */
  95     struct {} start_initial_reset_fields;
  96
  97     uint32_t fpc;          /* floating-point control register */
  98     uint32_t cc_op;
  99
 100     float_status fpu_status; /* passed to softfloat lib */
 101
 102     /* The low part of a 128-bit return, or remainder of a divide.  */
 103     uint64_t retxl;
 104
 105     PSW psw;
 106
 107     uint64_t cc_src;
 108     uint64_t cc_dst;
 109     uint64_t cc_vr;
 110
 111     uint64_t ex_value;
 112
 113     uint64_t __excp_addr;
 114     uint64_t psa;
 115
 116     uint32_t int_pgm_code;
 117     uint32_t int_pgm_ilen;
 118
 119     uint32_t int_svc_code;
 120     uint32_t int_svc_ilen;
 121
 122     uint64_t per_address;
 123     uint16_t per_perc_atmid;
 124
 125     uint64_t cregs[16]; /* control registers */
 126
 127     ExtQueue ext_queue[MAX_EXT_QUEUE];
 128     IOIntQueue io_queue[MAX_IO_QUEUE][8];
 129     MchkQueue mchk_queue[MAX_MCHK_QUEUE];
 130
 131     int pending_int;
 132     int ext_index;
 133     int io_index[8];
 134     int mchk_index;
 135
 136     uint64_t ckc;
 137     uint64_t cputm;
 138     uint32_t todpr;
 139
 140     uint64_t pfault_token;
 141     uint64_t pfault_compare;
 142     uint64_t pfault_select;
 143
 144     uint64_t gbea;
 145     uint64_t pp;
 146
 147     /* Fields up to this point are cleared by a CPU reset */
 148     struct {} end_reset_fields;
 149
 150     CPU_COMMON
 151
 152     uint32_t cpu_num;
 153     uint64_t cpuid;
 154
 155     uint64_t tod_offset;
 156     uint64_t tod_basetime;
 157     QEMUTimer *tod_timer;
 158
 159     QEMUTimer *cpu_timer;
 160
 161     /*
 162      * The cpu state represents the logical state of a cpu. In contrast to other
 163      * architectures, there is a difference between a halt and a stop on s390.
 164      * If all cpus are either stopped (including check stop) or in the disabled
 165      * wait state, the vm can be shut down.
 166      */
 167 #define CPU_STATE_UNINITIALIZED        0x00
 168 #define CPU_STATE_STOPPED              0x01
 169 #define CPU_STATE_CHECK_STOP           0x02
 170 #define CPU_STATE_OPERATING            0x03
 171 #define CPU_STATE_LOAD                 0x04
 172     uint8_t cpu_state;
 173
 174     /* currently processed sigp order */
 175     uint8_t sigp_order;
 176
 177 } CPUS390XState;
 178
 179 static inline CPU_DoubleU *get_freg(CPUS390XState *cs, int nr)
 180 {
 181     return &cs->vregs[nr][0];
 182 }
 183
 184 /**
 185  * S390CPU:
 186  * @env: #CPUS390XState.
 187  *
 188  * An S/390 CPU.
 189  */
 190 struct S390CPU {
 191     /*< private >*/
 192     CPUState parent_obj;
 193     /*< public >*/
 194
 195     CPUS390XState env;
 196     int64_t id;
 197     S390CPUModel *model;
 198     /* needed for live migration */
 199     void *irqstate;
 200     uint32_t irqstate_saved_size;
 201 };
 202
 203 static inline S390CPU *s390_env_get_cpu(CPUS390XState *env)
 204 {
 205     return container_of(env, S390CPU, env);
 206 }
 207
 208 #define ENV_GET_CPU(e) CPU(s390_env_get_cpu(e))
 209
 210 #define ENV_OFFSET offsetof(S390CPU, env)
 211
 212 #ifndef CONFIG_USER_ONLY
 213 extern const struct VMStateDescription vmstate_s390_cpu;
 214 #endif
 215
 216 /* distinguish between 24 bit and 31 bit addressing */
 217 #define HIGH_ORDER_BIT 0x80000000
 218
 219 /* Interrupt Codes */
 220 /* Program Interrupts */
 221 #define PGM_OPERATION                   0x0001
 222 #define PGM_PRIVILEGED                  0x0002
 223 #define PGM_EXECUTE                     0x0003
 224 #define PGM_PROTECTION                  0x0004
 225 #define PGM_ADDRESSING                  0x0005
 226 #define PGM_SPECIFICATION               0x0006
 227 #define PGM_DATA                        0x0007
 228 #define PGM_FIXPT_OVERFLOW              0x0008
 229 #define PGM_FIXPT_DIVIDE                0x0009
 230 #define PGM_DEC_OVERFLOW                0x000a
 231 #define PGM_DEC_DIVIDE                  0x000b
 232 #define PGM_HFP_EXP_OVERFLOW            0x000c
 233 #define PGM_HFP_EXP_UNDERFLOW           0x000d
 234 #define PGM_HFP_SIGNIFICANCE            0x000e
 235 #define PGM_HFP_DIVIDE                  0x000f
 236 #define PGM_SEGMENT_TRANS               0x0010
 237 #define PGM_PAGE_TRANS                  0x0011
 238 #define PGM_TRANS_SPEC                  0x0012
 239 #define PGM_SPECIAL_OP                  0x0013
 240 #define PGM_OPERAND                     0x0015
 241 #define PGM_TRACE_TABLE                 0x0016
 242 #define PGM_SPACE_SWITCH                0x001c
 243 #define PGM_HFP_SQRT                    0x001d
 244 #define PGM_PC_TRANS_SPEC               0x001f
 245 #define PGM_AFX_TRANS                   0x0020
 246 #define PGM_ASX_TRANS                   0x0021
 247 #define PGM_LX_TRANS                    0x0022
 248 #define PGM_EX_TRANS                    0x0023
 249 #define PGM_PRIM_AUTH                   0x0024
 250 #define PGM_SEC_AUTH                    0x0025
 251 #define PGM_ALET_SPEC                   0x0028
 252 #define PGM_ALEN_SPEC                   0x0029
 253 #define PGM_ALE_SEQ                     0x002a
 254 #define PGM_ASTE_VALID                  0x002b
 255 #define PGM_ASTE_SEQ                    0x002c
 256 #define PGM_EXT_AUTH                    0x002d
 257 #define PGM_STACK_FULL                  0x0030
 258 #define PGM_STACK_EMPTY                 0x0031
 259 #define PGM_STACK_SPEC                  0x0032
 260 #define PGM_STACK_TYPE                  0x0033
 261 #define PGM_STACK_OP                    0x0034
 262 #define PGM_ASCE_TYPE                   0x0038
 263 #define PGM_REG_FIRST_TRANS             0x0039
 264 #define PGM_REG_SEC_TRANS               0x003a
 265 #define PGM_REG_THIRD_TRANS             0x003b
 266 #define PGM_MONITOR                     0x0040
 267 #define PGM_PER                         0x0080
 268 #define PGM_CRYPTO                      0x0119
 269
 270 /* External Interrupts */
 271 #define EXT_INTERRUPT_KEY               0x0040
 272 #define EXT_CLOCK_COMP                  0x1004
 273 #define EXT_CPU_TIMER                   0x1005
 274 #define EXT_MALFUNCTION                 0x1200
 275 #define EXT_EMERGENCY                   0x1201
 276 #define EXT_EXTERNAL_CALL               0x1202
 277 #define EXT_ETR                         0x1406
 278 #define EXT_SERVICE                     0x2401
 279 #define EXT_VIRTIO                      0x2603
 280
 281 /* PSW defines */
 282 #undef PSW_MASK_PER
 283 #undef PSW_MASK_DAT
 284 #undef PSW_MASK_IO
 285 #undef PSW_MASK_EXT
 286 #undef PSW_MASK_KEY
 287 #undef PSW_SHIFT_KEY
 288 #undef PSW_MASK_MCHECK
 289 #undef PSW_MASK_WAIT
 290 #undef PSW_MASK_PSTATE
 291 #undef PSW_MASK_ASC
 292 #undef PSW_SHIFT_ASC
 293 #undef PSW_MASK_CC
 294 #undef PSW_MASK_PM
 295 #undef PSW_MASK_64
 296 #undef PSW_MASK_32
 297 #undef PSW_MASK_ESA_ADDR
 298
 299 #define PSW_MASK_PER            0x4000000000000000ULL
 300 #define PSW_MASK_DAT            0x0400000000000000ULL
 301 #define PSW_MASK_IO             0x0200000000000000ULL
 302 #define PSW_MASK_EXT            0x0100000000000000ULL
 303 #define PSW_MASK_KEY            0x00F0000000000000ULL
 304 #define PSW_SHIFT_KEY           52
 305 #define PSW_MASK_MCHECK         0x0004000000000000ULL
 306 #define PSW_MASK_WAIT           0x0002000000000000ULL
 307 #define PSW_MASK_PSTATE         0x0001000000000000ULL
 308 #define PSW_MASK_ASC            0x0000C00000000000ULL
 309 #define PSW_SHIFT_ASC           46
 310 #define PSW_MASK_CC             0x0000300000000000ULL
 311 #define PSW_MASK_PM             0x00000F0000000000ULL
 312 #define PSW_MASK_64             0x0000000100000000ULL
 313 #define PSW_MASK_32             0x0000000080000000ULL
 314 #define PSW_MASK_ESA_ADDR       0x000000007fffffffULL
 315
 316 #undef PSW_ASC_PRIMARY
 317 #undef PSW_ASC_ACCREG
 318 #undef PSW_ASC_SECONDARY
 319 #undef PSW_ASC_HOME
 320
 321 #define PSW_ASC_PRIMARY         0x0000000000000000ULL
 322 #define PSW_ASC_ACCREG          0x0000400000000000ULL
 323 #define PSW_ASC_SECONDARY       0x0000800000000000ULL
 324 #define PSW_ASC_HOME            0x0000C00000000000ULL
 325
 326 /* the address space values shifted */
 327 #define AS_PRIMARY              0
 328 #define AS_ACCREG               1
 329 #define AS_SECONDARY            2
 330 #define AS_HOME                 3
 331
 332 /* tb flags */
 333
 334 #define FLAG_MASK_PSW_SHIFT     31
 335 #define FLAG_MASK_PER           (PSW_MASK_PER    >> FLAG_MASK_PSW_SHIFT)
 336 #define FLAG_MASK_PSTATE        (PSW_MASK_PSTATE >> FLAG_MASK_PSW_SHIFT)
 337 #define FLAG_MASK_ASC           (PSW_MASK_ASC    >> FLAG_MASK_PSW_SHIFT)
 338 #define FLAG_MASK_64            (PSW_MASK_64     >> FLAG_MASK_PSW_SHIFT)
 339 #define FLAG_MASK_32            (PSW_MASK_32     >> FLAG_MASK_PSW_SHIFT)
 340 #define FLAG_MASK_PSW           (FLAG_MASK_PER | FLAG_MASK_PSTATE \
 341                                 | FLAG_MASK_ASC | FLAG_MASK_64 | FLAG_MASK_32)
 342
 343 /* Control register 0 bits */
 344 #define CR0_LOWPROT             0x0000000010000000ULL
 345 #define CR0_SECONDARY           0x0000000004000000ULL
 346 #define CR0_EDAT                0x0000000000800000ULL
 347
 348 /* MMU */
 349 #define MMU_PRIMARY_IDX         0
 350 #define MMU_SECONDARY_IDX       1
 351 #define MMU_HOME_IDX            2
 352
 353 static inline int cpu_mmu_index(CPUS390XState *env, bool ifetch)
 354 {
 355     switch (env->psw.mask & PSW_MASK_ASC) {
 356     case PSW_ASC_PRIMARY:
 357         return MMU_PRIMARY_IDX;
 358     case PSW_ASC_SECONDARY:
 359         return MMU_SECONDARY_IDX;
 360     case PSW_ASC_HOME:
 361         return MMU_HOME_IDX;
 362     case PSW_ASC_ACCREG:
 363         /* Fallthrough: access register mode is not yet supported */
 364     default:
 365         abort();
 366     }
 367 }
 368
 369 static inline void cpu_get_tb_cpu_state(CPUS390XState* env, target_ulong *pc,
 370                                         target_ulong *cs_base, uint32_t *flags)
 371 {
 372     *pc = env->psw.addr;
 373     *cs_base = env->ex_value;
 374     *flags = (env->psw.mask >> FLAG_MASK_PSW_SHIFT) & FLAG_MASK_PSW;
 375 }
 376
 377 /* PER bits from control register 9 */
 378 #define PER_CR9_EVENT_BRANCH           0x80000000
 379 #define PER_CR9_EVENT_IFETCH           0x40000000
 380 #define PER_CR9_EVENT_STORE            0x20000000
 381 #define PER_CR9_EVENT_STORE_REAL       0x08000000
 382 #define PER_CR9_EVENT_NULLIFICATION    0x01000000
 383 #define PER_CR9_CONTROL_BRANCH_ADDRESS 0x00800000
 384 #define PER_CR9_CONTROL_ALTERATION     0x00200000
 385
 386 /* PER bits from the PER CODE/ATMID/AI in lowcore */
 387 #define PER_CODE_EVENT_BRANCH          0x8000
 388 #define PER_CODE_EVENT_IFETCH          0x4000
 389 #define PER_CODE_EVENT_STORE           0x2000
 390 #define PER_CODE_EVENT_STORE_REAL      0x0800
 391 #define PER_CODE_EVENT_NULLIFICATION   0x0100
 392
 393 #define EXCP_EXT 1 /* external interrupt */
 394 #define EXCP_SVC 2 /* supervisor call (syscall) */
 395 #define EXCP_PGM 3 /* program interruption */
 396 #define EXCP_IO  7 /* I/O interrupt */
 397 #define EXCP_MCHK 8 /* machine check */
 398
 399 #define INTERRUPT_EXT        (1 << 0)
 400 #define INTERRUPT_TOD        (1 << 1)
 401 #define INTERRUPT_CPUTIMER   (1 << 2)
 402 #define INTERRUPT_IO         (1 << 3)
 403 #define INTERRUPT_MCHK       (1 << 4)
 404
 405 /* Program Status Word.  */
 406 #define S390_PSWM_REGNUM 0
 407 #define S390_PSWA_REGNUM 1
 408 /* General Purpose Registers.  */
 409 #define S390_R0_REGNUM 2
 410 #define S390_R1_REGNUM 3
 411 #define S390_R2_REGNUM 4
 412 #define S390_R3_REGNUM 5
 413 #define S390_R4_REGNUM 6
 414 #define S390_R5_REGNUM 7
 415 #define S390_R6_REGNUM 8
 416 #define S390_R7_REGNUM 9
 417 #define S390_R8_REGNUM 10
 418 #define S390_R9_REGNUM 11
 419 #define S390_R10_REGNUM 12
 420 #define S390_R11_REGNUM 13
 421 #define S390_R12_REGNUM 14
 422 #define S390_R13_REGNUM 15
 423 #define S390_R14_REGNUM 16
 424 #define S390_R15_REGNUM 17
 425 /* Total Core Registers. */
 426 #define S390_NUM_CORE_REGS 18
 427
 428 static inline void setcc(S390CPU *cpu, uint64_t cc)
 429 {
 430     CPUS390XState *env = &cpu->env;
 431
 432     env->psw.mask &= ~(3ull << 44);
 433     env->psw.mask |= (cc & 3) << 44;
 434     env->cc_op = cc;
 435 }
 436
 437 /* STSI */
 438 #define STSI_LEVEL_MASK         0x00000000f0000000ULL
 439 #define STSI_LEVEL_CURRENT      0x0000000000000000ULL
 440 #define STSI_LEVEL_1            0x0000000010000000ULL
 441 #define STSI_LEVEL_2            0x0000000020000000ULL
 442 #define STSI_LEVEL_3            0x0000000030000000ULL
 443 #define STSI_R0_RESERVED_MASK   0x000000000fffff00ULL
 444 #define STSI_R0_SEL1_MASK       0x00000000000000ffULL
 445 #define STSI_R1_RESERVED_MASK   0x00000000ffff0000ULL
 446 #define STSI_R1_SEL2_MASK       0x000000000000ffffULL
 447
 448 /* Basic Machine Configuration */
 449 struct sysib_111 {
 450     uint32_t res1[8];
 451     uint8_t  manuf[16];
 452     uint8_t  type[4];
 453     uint8_t  res2[12];
 454     uint8_t  model[16];
 455     uint8_t  sequence[16];
 456     uint8_t  plant[4];
 457     uint8_t  res3[156];
 458 };
 459
 460 /* Basic Machine CPU */
 461 struct sysib_121 {
 462     uint32_t res1[80];
 463     uint8_t  sequence[16];
 464     uint8_t  plant[4];
 465     uint8_t  res2[2];
 466     uint16_t cpu_addr;
 467     uint8_t  res3[152];
 468 };
 469
 470 /* Basic Machine CPUs */
 471 struct sysib_122 {
 472     uint8_t res1[32];
 473     uint32_t capability;
 474     uint16_t total_cpus;
 475     uint16_t active_cpus;
 476     uint16_t standby_cpus;
 477     uint16_t reserved_cpus;
 478     uint16_t adjustments[2026];
 479 };
 480
 481 /* LPAR CPU */
 482 struct sysib_221 {
 483     uint32_t res1[80];
 484     uint8_t  sequence[16];
 485     uint8_t  plant[4];
 486     uint16_t cpu_id;
 487     uint16_t cpu_addr;
 488     uint8_t  res3[152];
 489 };
 490
 491 /* LPAR CPUs */
 492 struct sysib_222 {
 493     uint32_t res1[32];
 494     uint16_t lpar_num;
 495     uint8_t  res2;
 496     uint8_t  lcpuc;
 497     uint16_t total_cpus;
 498     uint16_t conf_cpus;
 499     uint16_t standby_cpus;
 500     uint16_t reserved_cpus;
 501     uint8_t  name[8];
 502     uint32_t caf;
 503     uint8_t  res3[16];
 504     uint16_t dedicated_cpus;
 505     uint16_t shared_cpus;
 506     uint8_t  res4[180];
 507 };
 508
 509 /* VM CPUs */
 510 struct sysib_322 {
 511     uint8_t  res1[31];
 512     uint8_t  count;
 513     struct {
 514         uint8_t  res2[4];
 515         uint16_t total_cpus;
 516         uint16_t conf_cpus;
 517         uint16_t standby_cpus;
 518         uint16_t reserved_cpus;
 519         uint8_t  name[8];
 520         uint32_t caf;
 521         uint8_t  cpi[16];
 522         uint8_t res5[3];
 523         uint8_t ext_name_encoding;
 524         uint32_t res3;
 525         uint8_t uuid[16];
 526     } vm[8];
 527     uint8_t res4[1504];
 528     uint8_t ext_names[8][256];
 529 };
 530
 531 /* MMU defines */
 532 #define _ASCE_ORIGIN            ~0xfffULL /* segment table origin             */
 533 #define _ASCE_SUBSPACE          0x200     /* subspace group control           */
 534 #define _ASCE_PRIVATE_SPACE     0x100     /* private space control            */
 535 #define _ASCE_ALT_EVENT         0x80      /* storage alteration event control */
 536 #define _ASCE_SPACE_SWITCH      0x40      /* space switch event               */
 537 #define _ASCE_REAL_SPACE        0x20      /* real space control               */
 538 #define _ASCE_TYPE_MASK         0x0c      /* asce table type mask             */
 539 #define _ASCE_TYPE_REGION1      0x0c      /* region first table type          */
 540 #define _ASCE_TYPE_REGION2      0x08      /* region second table type         */
 541 #define _ASCE_TYPE_REGION3      0x04      /* region third table type          */
 542 #define _ASCE_TYPE_SEGMENT      0x00      /* segment table type               */
 543 #define _ASCE_TABLE_LENGTH      0x03      /* region table length              */
 544
 545 #define _REGION_ENTRY_ORIGIN    ~0xfffULL /* region/segment table origin      */
 546 #define _REGION_ENTRY_RO        0x200     /* region/segment protection bit    */
 547 #define _REGION_ENTRY_TF        0xc0      /* region/segment table offset      */
 548 #define _REGION_ENTRY_INV       0x20      /* invalid region table entry       */
 549 #define _REGION_ENTRY_TYPE_MASK 0x0c      /* region/segment table type mask   */
 550 #define _REGION_ENTRY_TYPE_R1   0x0c      /* region first table type          */
 551 #define _REGION_ENTRY_TYPE_R2   0x08      /* region second table type         */
 552 #define _REGION_ENTRY_TYPE_R3   0x04      /* region third table type          */
 553 #define _REGION_ENTRY_LENGTH    0x03      /* region third length              */
 554
 555 #define _SEGMENT_ENTRY_ORIGIN   ~0x7ffULL /* segment table origin             */
 556 #define _SEGMENT_ENTRY_FC       0x400     /* format control                   */
 557 #define _SEGMENT_ENTRY_RO       0x200     /* page protection bit              */
 558 #define _SEGMENT_ENTRY_INV      0x20      /* invalid segment table entry      */
 559
 560 #define VADDR_PX                0xff000   /* page index bits                  */
 561
 562 #define _PAGE_RO        0x200            /* HW read-only bit  */
 563 #define _PAGE_INVALID   0x400            /* HW invalid bit    */
 564 #define _PAGE_RES0      0x800            /* bit must be zero  */
 565
 566 #define SK_C                    (0x1 << 1)
 567 #define SK_R                    (0x1 << 2)
 568 #define SK_F                    (0x1 << 3)
 569 #define SK_ACC_MASK             (0xf << 4)
 570
 571 /* SIGP order codes */
 572 #define SIGP_SENSE             0x01
 573 #define SIGP_EXTERNAL_CALL     0x02
 574 #define SIGP_EMERGENCY         0x03
 575 #define SIGP_START             0x04
 576 #define SIGP_STOP              0x05
 577 #define SIGP_RESTART           0x06
 578 #define SIGP_STOP_STORE_STATUS 0x09
 579 #define SIGP_INITIAL_CPU_RESET 0x0b
 580 #define SIGP_CPU_RESET         0x0c
 581 #define SIGP_SET_PREFIX        0x0d
 582 #define SIGP_STORE_STATUS_ADDR 0x0e
 583 #define SIGP_SET_ARCH          0x12
 584 #define SIGP_STORE_ADTL_STATUS 0x17
 585
 586 /* SIGP condition codes */
 587 #define SIGP_CC_ORDER_CODE_ACCEPTED 0
 588 #define SIGP_CC_STATUS_STORED       1
 589 #define SIGP_CC_BUSY                2
 590 #define SIGP_CC_NOT_OPERATIONAL     3
 591
 592 /* SIGP status bits */
 593 #define SIGP_STAT_EQUIPMENT_CHECK   0x80000000UL
 594 #define SIGP_STAT_INCORRECT_STATE   0x00000200UL
 595 #define SIGP_STAT_INVALID_PARAMETER 0x00000100UL
 596 #define SIGP_STAT_EXT_CALL_PENDING  0x00000080UL
 597 #define SIGP_STAT_STOPPED           0x00000040UL
 598 #define SIGP_STAT_OPERATOR_INTERV   0x00000020UL
 599 #define SIGP_STAT_CHECK_STOP        0x00000010UL
 600 #define SIGP_STAT_INOPERATIVE       0x00000004UL
 601 #define SIGP_STAT_INVALID_ORDER     0x00000002UL
 602 #define SIGP_STAT_RECEIVER_CHECK    0x00000001UL
 603
 604 /* SIGP SET ARCHITECTURE modes */
 605 #define SIGP_MODE_ESA_S390 0
 606 #define SIGP_MODE_Z_ARCH_TRANS_ALL_PSW 1
 607 #define SIGP_MODE_Z_ARCH_TRANS_CUR_PSW 2
 608
 609 /* SIGP order code mask corresponding to bit positions 56-63 */
 610 #define SIGP_ORDER_MASK 0x000000ff
 611
 612 /* from s390-virtio-ccw */
 613 #define MEM_SECTION_SIZE             0x10000000UL
 614 #define MAX_AVAIL_SLOTS              32
 615
 616 /* machine check interruption code */
 617
 618 /* subclasses */
 619 #define MCIC_SC_SD 0x8000000000000000ULL
 620 #define MCIC_SC_PD 0x4000000000000000ULL
 621 #define MCIC_SC_SR 0x2000000000000000ULL
 622 #define MCIC_SC_CD 0x0800000000000000ULL
 623 #define MCIC_SC_ED 0x0400000000000000ULL
 624 #define MCIC_SC_DG 0x0100000000000000ULL
 625 #define MCIC_SC_W  0x0080000000000000ULL
 626 #define MCIC_SC_CP 0x0040000000000000ULL
 627 #define MCIC_SC_SP 0x0020000000000000ULL
 628 #define MCIC_SC_CK 0x0010000000000000ULL
 629
 630 /* subclass modifiers */
 631 #define MCIC_SCM_B  0x0002000000000000ULL
 632 #define MCIC_SCM_DA 0x0000000020000000ULL
 633 #define MCIC_SCM_AP 0x0000000000080000ULL
 634
 635 /* storage errors */
 636 #define MCIC_SE_SE 0x0000800000000000ULL
 637 #define MCIC_SE_SC 0x0000400000000000ULL
 638 #define MCIC_SE_KE 0x0000200000000000ULL
 639 #define MCIC_SE_DS 0x0000100000000000ULL
 640 #define MCIC_SE_IE 0x0000000080000000ULL
 641
 642 /* validity bits */
 643 #define MCIC_VB_WP 0x0000080000000000ULL
 644 #define MCIC_VB_MS 0x0000040000000000ULL
 645 #define MCIC_VB_PM 0x0000020000000000ULL
 646 #define MCIC_VB_IA 0x0000010000000000ULL
 647 #define MCIC_VB_FA 0x0000008000000000ULL
 648 #define MCIC_VB_VR 0x0000004000000000ULL
 649 #define MCIC_VB_EC 0x0000002000000000ULL
 650 #define MCIC_VB_FP 0x0000001000000000ULL
 651 #define MCIC_VB_GR 0x0000000800000000ULL
 652 #define MCIC_VB_CR 0x0000000400000000ULL
 653 #define MCIC_VB_ST 0x0000000100000000ULL
 654 #define MCIC_VB_AR 0x0000000040000000ULL
 655 #define MCIC_VB_GS 0x0000000008000000ULL
 656 #define MCIC_VB_PR 0x0000000000200000ULL
 657 #define MCIC_VB_FC 0x0000000000100000ULL
 658 #define MCIC_VB_CT 0x0000000000020000ULL
 659 #define MCIC_VB_CC 0x0000000000010000ULL
 660
 661
 662 /* cpu.c */
 663 int s390_get_clock(uint8_t *tod_high, uint64_t *tod_low);
 664 int s390_set_clock(uint8_t *tod_high, uint64_t *tod_low);
 665 void s390_crypto_reset(void);
 666 bool s390_get_squash_mcss(void);
 667 int s390_get_memslot_count(void);
 668 int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit);
 669 void s390_cmma_reset(void);
 670 int s390_cpu_restart(S390CPU *cpu);
 671 void s390_enable_css_support(S390CPU *cpu);
 672 int s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch_id,
 673                                 int vq, bool assign);
 674 #ifndef CONFIG_USER_ONLY
 675 unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu);
 676 #else
 677 static inline unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
 678 {
 679     return 0;
 680 }
 681 #endif /* CONFIG_USER_ONLY */
 682
 683
 684 /* cpu_models.c */
 685 void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 686 #define cpu_list s390_cpu_list
 687 const char *s390_default_cpu_model_name(void);
 688
 689
 690 /* helper.c */
 691 #define cpu_init(cpu_model) cpu_generic_init(TYPE_S390_CPU, cpu_model)
 692 S390CPU *s390x_new_cpu(const char *cpu_model, int64_t id, Error **errp);
 693 /* you can call this signal handler from your SIGBUS and SIGSEGV
 694    signal handlers to inform the virtual CPU of exceptions. non zero
 695    is returned if the signal was handled by the virtual CPU.  */
 696 int cpu_s390x_signal_handler(int host_signum, void *pinfo, void *puc);
 697 #define cpu_signal_handler cpu_s390x_signal_handler
 698
 699
 700 /* interrupt.c */
 701 void s390_crw_mchk(void);
 702 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
 703                        uint32_t io_int_parm, uint32_t io_int_word);
 704 /* automatically detect the instruction length */
 705 #define ILEN_AUTO                   0xff
 706 void program_interrupt(CPUS390XState *env, uint32_t code, int ilen);
 707 /* service interrupts are floating therefore we must not pass an cpustate */
 708 void s390_sclp_extint(uint32_t parm);
 709
 710
 711 /* mmu_helper.c */
 712 int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
 713                          int len, bool is_write);
 714 #define s390_cpu_virt_mem_read(cpu, laddr, ar, dest, len)    \
 715         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, false)
 716 #define s390_cpu_virt_mem_write(cpu, laddr, ar, dest, len)       \
 717         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, true)
 718 #define s390_cpu_virt_mem_check_write(cpu, laddr, ar, len)   \
 719         s390_cpu_virt_mem_rw(cpu, laddr, ar, NULL, len, true)
 720
 721
 722 /* outside of target/s390x/ */
 723 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
 724 extern void subsystem_reset(void);
 725 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code);
 726 int s390_virtio_hypercall(CPUS390XState *env);
 727
 728 #endif