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 void s390_cpu_do_interrupt(CPUState *cpu);
 217 bool s390_cpu_exec_interrupt(CPUState *cpu, int int_req);
 218 void s390_cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
 219                          int flags);
 220 int s390_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
 221                               int cpuid, void *opaque);
 222
 223 hwaddr s390_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
 224 hwaddr s390_cpu_get_phys_addr_debug(CPUState *cpu, vaddr addr);
 225 int s390_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
 226 int s390_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
 227 void s390_cpu_gdb_init(CPUState *cs);
 228 void s390x_cpu_debug_excp_handler(CPUState *cs);
 229
 230 #include "sysemu/kvm.h"
 231
 232 /* distinguish between 24 bit and 31 bit addressing */
 233 #define HIGH_ORDER_BIT 0x80000000
 234
 235 /* Interrupt Codes */
 236 /* Program Interrupts */
 237 #define PGM_OPERATION                   0x0001
 238 #define PGM_PRIVILEGED                  0x0002
 239 #define PGM_EXECUTE                     0x0003
 240 #define PGM_PROTECTION                  0x0004
 241 #define PGM_ADDRESSING                  0x0005
 242 #define PGM_SPECIFICATION               0x0006
 243 #define PGM_DATA                        0x0007
 244 #define PGM_FIXPT_OVERFLOW              0x0008
 245 #define PGM_FIXPT_DIVIDE                0x0009
 246 #define PGM_DEC_OVERFLOW                0x000a
 247 #define PGM_DEC_DIVIDE                  0x000b
 248 #define PGM_HFP_EXP_OVERFLOW            0x000c
 249 #define PGM_HFP_EXP_UNDERFLOW           0x000d
 250 #define PGM_HFP_SIGNIFICANCE            0x000e
 251 #define PGM_HFP_DIVIDE                  0x000f
 252 #define PGM_SEGMENT_TRANS               0x0010
 253 #define PGM_PAGE_TRANS                  0x0011
 254 #define PGM_TRANS_SPEC                  0x0012
 255 #define PGM_SPECIAL_OP                  0x0013
 256 #define PGM_OPERAND                     0x0015
 257 #define PGM_TRACE_TABLE                 0x0016
 258 #define PGM_SPACE_SWITCH                0x001c
 259 #define PGM_HFP_SQRT                    0x001d
 260 #define PGM_PC_TRANS_SPEC               0x001f
 261 #define PGM_AFX_TRANS                   0x0020
 262 #define PGM_ASX_TRANS                   0x0021
 263 #define PGM_LX_TRANS                    0x0022
 264 #define PGM_EX_TRANS                    0x0023
 265 #define PGM_PRIM_AUTH                   0x0024
 266 #define PGM_SEC_AUTH                    0x0025
 267 #define PGM_ALET_SPEC                   0x0028
 268 #define PGM_ALEN_SPEC                   0x0029
 269 #define PGM_ALE_SEQ                     0x002a
 270 #define PGM_ASTE_VALID                  0x002b
 271 #define PGM_ASTE_SEQ                    0x002c
 272 #define PGM_EXT_AUTH                    0x002d
 273 #define PGM_STACK_FULL                  0x0030
 274 #define PGM_STACK_EMPTY                 0x0031
 275 #define PGM_STACK_SPEC                  0x0032
 276 #define PGM_STACK_TYPE                  0x0033
 277 #define PGM_STACK_OP                    0x0034
 278 #define PGM_ASCE_TYPE                   0x0038
 279 #define PGM_REG_FIRST_TRANS             0x0039
 280 #define PGM_REG_SEC_TRANS               0x003a
 281 #define PGM_REG_THIRD_TRANS             0x003b
 282 #define PGM_MONITOR                     0x0040
 283 #define PGM_PER                         0x0080
 284 #define PGM_CRYPTO                      0x0119
 285
 286 /* External Interrupts */
 287 #define EXT_INTERRUPT_KEY               0x0040
 288 #define EXT_CLOCK_COMP                  0x1004
 289 #define EXT_CPU_TIMER                   0x1005
 290 #define EXT_MALFUNCTION                 0x1200
 291 #define EXT_EMERGENCY                   0x1201
 292 #define EXT_EXTERNAL_CALL               0x1202
 293 #define EXT_ETR                         0x1406
 294 #define EXT_SERVICE                     0x2401
 295 #define EXT_VIRTIO                      0x2603
 296
 297 /* PSW defines */
 298 #undef PSW_MASK_PER
 299 #undef PSW_MASK_DAT
 300 #undef PSW_MASK_IO
 301 #undef PSW_MASK_EXT
 302 #undef PSW_MASK_KEY
 303 #undef PSW_SHIFT_KEY
 304 #undef PSW_MASK_MCHECK
 305 #undef PSW_MASK_WAIT
 306 #undef PSW_MASK_PSTATE
 307 #undef PSW_MASK_ASC
 308 #undef PSW_SHIFT_ASC
 309 #undef PSW_MASK_CC
 310 #undef PSW_MASK_PM
 311 #undef PSW_MASK_64
 312 #undef PSW_MASK_32
 313 #undef PSW_MASK_ESA_ADDR
 314
 315 #define PSW_MASK_PER            0x4000000000000000ULL
 316 #define PSW_MASK_DAT            0x0400000000000000ULL
 317 #define PSW_MASK_IO             0x0200000000000000ULL
 318 #define PSW_MASK_EXT            0x0100000000000000ULL
 319 #define PSW_MASK_KEY            0x00F0000000000000ULL
 320 #define PSW_SHIFT_KEY           52
 321 #define PSW_MASK_MCHECK         0x0004000000000000ULL
 322 #define PSW_MASK_WAIT           0x0002000000000000ULL
 323 #define PSW_MASK_PSTATE         0x0001000000000000ULL
 324 #define PSW_MASK_ASC            0x0000C00000000000ULL
 325 #define PSW_SHIFT_ASC           46
 326 #define PSW_MASK_CC             0x0000300000000000ULL
 327 #define PSW_MASK_PM             0x00000F0000000000ULL
 328 #define PSW_MASK_64             0x0000000100000000ULL
 329 #define PSW_MASK_32             0x0000000080000000ULL
 330 #define PSW_MASK_ESA_ADDR       0x000000007fffffffULL
 331
 332 #undef PSW_ASC_PRIMARY
 333 #undef PSW_ASC_ACCREG
 334 #undef PSW_ASC_SECONDARY
 335 #undef PSW_ASC_HOME
 336
 337 #define PSW_ASC_PRIMARY         0x0000000000000000ULL
 338 #define PSW_ASC_ACCREG          0x0000400000000000ULL
 339 #define PSW_ASC_SECONDARY       0x0000800000000000ULL
 340 #define PSW_ASC_HOME            0x0000C00000000000ULL
 341
 342 /* the address space values shifted */
 343 #define AS_PRIMARY              0
 344 #define AS_ACCREG               1
 345 #define AS_SECONDARY            2
 346 #define AS_HOME                 3
 347
 348 /* tb flags */
 349
 350 #define FLAG_MASK_PSW_SHIFT     31
 351 #define FLAG_MASK_PER           (PSW_MASK_PER    >> FLAG_MASK_PSW_SHIFT)
 352 #define FLAG_MASK_PSTATE        (PSW_MASK_PSTATE >> FLAG_MASK_PSW_SHIFT)
 353 #define FLAG_MASK_ASC           (PSW_MASK_ASC    >> FLAG_MASK_PSW_SHIFT)
 354 #define FLAG_MASK_64            (PSW_MASK_64     >> FLAG_MASK_PSW_SHIFT)
 355 #define FLAG_MASK_32            (PSW_MASK_32     >> FLAG_MASK_PSW_SHIFT)
 356 #define FLAG_MASK_PSW           (FLAG_MASK_PER | FLAG_MASK_PSTATE \
 357                                 | FLAG_MASK_ASC | FLAG_MASK_64 | FLAG_MASK_32)
 358
 359 /* Control register 0 bits */
 360 #define CR0_LOWPROT             0x0000000010000000ULL
 361 #define CR0_SECONDARY           0x0000000004000000ULL
 362 #define CR0_EDAT                0x0000000000800000ULL
 363
 364 /* MMU */
 365 #define MMU_PRIMARY_IDX         0
 366 #define MMU_SECONDARY_IDX       1
 367 #define MMU_HOME_IDX            2
 368
 369 static inline bool psw_key_valid(CPUS390XState *env, uint8_t psw_key)
 370 {
 371     uint16_t pkm = env->cregs[3] >> 16;
 372
 373     if (env->psw.mask & PSW_MASK_PSTATE) {
 374         /* PSW key has range 0..15, it is valid if the bit is 1 in the PKM */
 375         return pkm & (0x80 >> psw_key);
 376     }
 377     return true;
 378 }
 379
 380 static inline int cpu_mmu_index(CPUS390XState *env, bool ifetch)
 381 {
 382     switch (env->psw.mask & PSW_MASK_ASC) {
 383     case PSW_ASC_PRIMARY:
 384         return MMU_PRIMARY_IDX;
 385     case PSW_ASC_SECONDARY:
 386         return MMU_SECONDARY_IDX;
 387     case PSW_ASC_HOME:
 388         return MMU_HOME_IDX;
 389     case PSW_ASC_ACCREG:
 390         /* Fallthrough: access register mode is not yet supported */
 391     default:
 392         abort();
 393     }
 394 }
 395
 396 static inline uint64_t cpu_mmu_idx_to_asc(int mmu_idx)
 397 {
 398     switch (mmu_idx) {
 399     case MMU_PRIMARY_IDX:
 400         return PSW_ASC_PRIMARY;
 401     case MMU_SECONDARY_IDX:
 402         return PSW_ASC_SECONDARY;
 403     case MMU_HOME_IDX:
 404         return PSW_ASC_HOME;
 405     default:
 406         abort();
 407     }
 408 }
 409
 410 static inline void cpu_get_tb_cpu_state(CPUS390XState* env, target_ulong *pc,
 411                                         target_ulong *cs_base, uint32_t *flags)
 412 {
 413     *pc = env->psw.addr;
 414     *cs_base = env->ex_value;
 415     *flags = (env->psw.mask >> FLAG_MASK_PSW_SHIFT) & FLAG_MASK_PSW;
 416 }
 417
 418 #define MAX_ILEN 6
 419
 420 /* While the PoO talks about ILC (a number between 1-3) what is actually
 421    stored in LowCore is shifted left one bit (an even between 2-6).  As
 422    this is the actual length of the insn and therefore more useful, that
 423    is what we want to pass around and manipulate.  To make sure that we
 424    have applied this distinction universally, rename the "ILC" to "ILEN".  */
 425 static inline int get_ilen(uint8_t opc)
 426 {
 427     switch (opc >> 6) {
 428     case 0:
 429         return 2;
 430     case 1:
 431     case 2:
 432         return 4;
 433     default:
 434         return 6;
 435     }
 436 }
 437
 438 /* PER bits from control register 9 */
 439 #define PER_CR9_EVENT_BRANCH           0x80000000
 440 #define PER_CR9_EVENT_IFETCH           0x40000000
 441 #define PER_CR9_EVENT_STORE            0x20000000
 442 #define PER_CR9_EVENT_STORE_REAL       0x08000000
 443 #define PER_CR9_EVENT_NULLIFICATION    0x01000000
 444 #define PER_CR9_CONTROL_BRANCH_ADDRESS 0x00800000
 445 #define PER_CR9_CONTROL_ALTERATION     0x00200000
 446
 447 /* PER bits from the PER CODE/ATMID/AI in lowcore */
 448 #define PER_CODE_EVENT_BRANCH          0x8000
 449 #define PER_CODE_EVENT_IFETCH          0x4000
 450 #define PER_CODE_EVENT_STORE           0x2000
 451 #define PER_CODE_EVENT_STORE_REAL      0x0800
 452 #define PER_CODE_EVENT_NULLIFICATION   0x0100
 453
 454 /* Compute the ATMID field that is stored in the per_perc_atmid lowcore
 455    entry when a PER exception is triggered.  */
 456 static inline uint8_t get_per_atmid(CPUS390XState *env)
 457 {
 458     return ((env->psw.mask & PSW_MASK_64) ?      (1 << 7) : 0) |
 459            (                                     (1 << 6)    ) |
 460            ((env->psw.mask & PSW_MASK_32) ?      (1 << 5) : 0) |
 461            ((env->psw.mask & PSW_MASK_DAT)?      (1 << 4) : 0) |
 462            ((env->psw.mask & PSW_ASC_SECONDARY)? (1 << 3) : 0) |
 463            ((env->psw.mask & PSW_ASC_ACCREG)?    (1 << 2) : 0);
 464 }
 465
 466 /* Check if an address is within the PER starting address and the PER
 467    ending address.  The address range might loop.  */
 468 static inline bool get_per_in_range(CPUS390XState *env, uint64_t addr)
 469 {
 470     if (env->cregs[10] <= env->cregs[11]) {
 471         return env->cregs[10] <= addr && addr <= env->cregs[11];
 472     } else {
 473         return env->cregs[10] <= addr || addr <= env->cregs[11];
 474     }
 475 }
 476
 477 S390CPU *cpu_s390x_init(const char *cpu_model);
 478 S390CPU *s390x_new_cpu(const char *cpu_model, int64_t id, Error **errp);
 479 S390CPU *cpu_s390x_create(const char *cpu_model, Error **errp);
 480 void s390x_translate_init(void);
 481
 482 /* you can call this signal handler from your SIGBUS and SIGSEGV
 483    signal handlers to inform the virtual CPU of exceptions. non zero
 484    is returned if the signal was handled by the virtual CPU.  */
 485 int cpu_s390x_signal_handler(int host_signum, void *pinfo,
 486                            void *puc);
 487 int s390_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
 488                               int mmu_idx);
 489
 490
 491 #ifndef CONFIG_USER_ONLY
 492 void do_restart_interrupt(CPUS390XState *env);
 493 void s390x_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
 494                                    MMUAccessType access_type,
 495                                    int mmu_idx, uintptr_t retaddr);
 496
 497 static inline hwaddr decode_basedisp_s(CPUS390XState *env, uint32_t ipb,
 498                                        uint8_t *ar)
 499 {
 500     hwaddr addr = 0;
 501     uint8_t reg;
 502
 503     reg = ipb >> 28;
 504     if (reg > 0) {
 505         addr = env->regs[reg];
 506     }
 507     addr += (ipb >> 16) & 0xfff;
 508     if (ar) {
 509         *ar = reg;
 510     }
 511
 512     return addr;
 513 }
 514
 515 /* Base/displacement are at the same locations. */
 516 #define decode_basedisp_rs decode_basedisp_s
 517
 518 /* helper functions for run_on_cpu() */
 519 static inline void s390_do_cpu_reset(CPUState *cs, run_on_cpu_data arg)
 520 {
 521     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 522
 523     scc->cpu_reset(cs);
 524 }
 525 static inline void s390_do_cpu_full_reset(CPUState *cs, run_on_cpu_data arg)
 526 {
 527     cpu_reset(cs);
 528 }
 529
 530 void s390x_tod_timer(void *opaque);
 531 void s390x_cpu_timer(void *opaque);
 532
 533 int s390_virtio_hypercall(CPUS390XState *env);
 534
 535 #ifdef CONFIG_KVM
 536 void kvm_s390_service_interrupt(uint32_t parm);
 537 void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq);
 538 void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq);
 539 int kvm_s390_inject_flic(struct kvm_s390_irq *irq);
 540 void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code);
 541 int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
 542                     int len, bool is_write);
 543 int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_clock);
 544 int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_clock);
 545 #else
 546 static inline void kvm_s390_service_interrupt(uint32_t parm)
 547 {
 548 }
 549 static inline int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
 550 {
 551     return -ENOSYS;
 552 }
 553 static inline int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
 554 {
 555     return -ENOSYS;
 556 }
 557 static inline int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar,
 558                                   void *hostbuf, int len, bool is_write)
 559 {
 560     return -ENOSYS;
 561 }
 562 static inline void kvm_s390_access_exception(S390CPU *cpu, uint16_t code,
 563                                              uint64_t te_code)
 564 {
 565 }
 566 #endif
 567
 568 static inline int s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
 569 {
 570     if (kvm_enabled()) {
 571         return kvm_s390_get_clock(tod_high, tod_low);
 572     }
 573     /* Fixme TCG */
 574     *tod_high = 0;
 575     *tod_low = 0;
 576     return 0;
 577 }
 578
 579 static inline int s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
 580 {
 581     if (kvm_enabled()) {
 582         return kvm_s390_set_clock(tod_high, tod_low);
 583     }
 584     /* Fixme TCG */
 585     return 0;
 586 }
 587
 588 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
 589 unsigned int s390_cpu_halt(S390CPU *cpu);
 590 void s390_cpu_unhalt(S390CPU *cpu);
 591 unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu);
 592 static inline uint8_t s390_cpu_get_state(S390CPU *cpu)
 593 {
 594     return cpu->env.cpu_state;
 595 }
 596
 597 void gtod_save(QEMUFile *f, void *opaque);
 598 int gtod_load(QEMUFile *f, void *opaque, int version_id);
 599
 600 void cpu_inject_ext(S390CPU *cpu, uint32_t code, uint32_t param,
 601                     uint64_t param64);
 602
 603 /* ioinst.c */
 604 void ioinst_handle_xsch(S390CPU *cpu, uint64_t reg1);
 605 void ioinst_handle_csch(S390CPU *cpu, uint64_t reg1);
 606 void ioinst_handle_hsch(S390CPU *cpu, uint64_t reg1);
 607 void ioinst_handle_msch(S390CPU *cpu, uint64_t reg1, uint32_t ipb);
 608 void ioinst_handle_ssch(S390CPU *cpu, uint64_t reg1, uint32_t ipb);
 609 void ioinst_handle_stcrw(S390CPU *cpu, uint32_t ipb);
 610 void ioinst_handle_stsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb);
 611 int ioinst_handle_tsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb);
 612 void ioinst_handle_chsc(S390CPU *cpu, uint32_t ipb);
 613 int ioinst_handle_tpi(S390CPU *cpu, uint32_t ipb);
 614 void ioinst_handle_schm(S390CPU *cpu, uint64_t reg1, uint64_t reg2,
 615                         uint32_t ipb);
 616 void ioinst_handle_rsch(S390CPU *cpu, uint64_t reg1);
 617 void ioinst_handle_rchp(S390CPU *cpu, uint64_t reg1);
 618 void ioinst_handle_sal(S390CPU *cpu, uint64_t reg1);
 619
 620 /* service interrupts are floating therefore we must not pass an cpustate */
 621 void s390_sclp_extint(uint32_t parm);
 622
 623 #else
 624 static inline unsigned int s390_cpu_halt(S390CPU *cpu)
 625 {
 626     return 0;
 627 }
 628
 629 static inline void s390_cpu_unhalt(S390CPU *cpu)
 630 {
 631 }
 632
 633 static inline unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
 634 {
 635     return 0;
 636 }
 637 #endif
 638
 639 extern void subsystem_reset(void);
 640
 641 #define cpu_init(model) CPU(cpu_s390x_init(model))
 642 #define cpu_signal_handler cpu_s390x_signal_handler
 643
 644 void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 645 #define cpu_list s390_cpu_list
 646 void s390_cpu_model_register_props(Object *obj);
 647 void s390_cpu_model_class_register_props(ObjectClass *oc);
 648 void s390_realize_cpu_model(CPUState *cs, Error **errp);
 649 ObjectClass *s390_cpu_class_by_name(const char *name);
 650
 651 #define EXCP_EXT 1 /* external interrupt */
 652 #define EXCP_SVC 2 /* supervisor call (syscall) */
 653 #define EXCP_PGM 3 /* program interruption */
 654 #define EXCP_IO  7 /* I/O interrupt */
 655 #define EXCP_MCHK 8 /* machine check */
 656
 657 #define INTERRUPT_EXT        (1 << 0)
 658 #define INTERRUPT_TOD        (1 << 1)
 659 #define INTERRUPT_CPUTIMER   (1 << 2)
 660 #define INTERRUPT_IO         (1 << 3)
 661 #define INTERRUPT_MCHK       (1 << 4)
 662
 663 /* Program Status Word.  */
 664 #define S390_PSWM_REGNUM 0
 665 #define S390_PSWA_REGNUM 1
 666 /* General Purpose Registers.  */
 667 #define S390_R0_REGNUM 2
 668 #define S390_R1_REGNUM 3
 669 #define S390_R2_REGNUM 4
 670 #define S390_R3_REGNUM 5
 671 #define S390_R4_REGNUM 6
 672 #define S390_R5_REGNUM 7
 673 #define S390_R6_REGNUM 8
 674 #define S390_R7_REGNUM 9
 675 #define S390_R8_REGNUM 10
 676 #define S390_R9_REGNUM 11
 677 #define S390_R10_REGNUM 12
 678 #define S390_R11_REGNUM 13
 679 #define S390_R12_REGNUM 14
 680 #define S390_R13_REGNUM 15
 681 #define S390_R14_REGNUM 16
 682 #define S390_R15_REGNUM 17
 683 /* Total Core Registers. */
 684 #define S390_NUM_CORE_REGS 18
 685
 686 /* CC optimization */
 687
 688 /* Instead of computing the condition codes after each x86 instruction,
 689  * QEMU just stores the result (called CC_DST), the type of operation
 690  * (called CC_OP) and whatever operands are needed (CC_SRC and possibly
 691  * CC_VR). When the condition codes are needed, the condition codes can
 692  * be calculated using this information. Condition codes are not generated
 693  * if they are only needed for conditional branches.
 694  */
 695 enum cc_op {
 696     CC_OP_CONST0 = 0,           /* CC is 0 */
 697     CC_OP_CONST1,               /* CC is 1 */
 698     CC_OP_CONST2,               /* CC is 2 */
 699     CC_OP_CONST3,               /* CC is 3 */
 700
 701     CC_OP_DYNAMIC,              /* CC calculation defined by env->cc_op */
 702     CC_OP_STATIC,               /* CC value is env->cc_op */
 703
 704     CC_OP_NZ,                   /* env->cc_dst != 0 */
 705     CC_OP_LTGT_32,              /* signed less/greater than (32bit) */
 706     CC_OP_LTGT_64,              /* signed less/greater than (64bit) */
 707     CC_OP_LTUGTU_32,            /* unsigned less/greater than (32bit) */
 708     CC_OP_LTUGTU_64,            /* unsigned less/greater than (64bit) */
 709     CC_OP_LTGT0_32,             /* signed less/greater than 0 (32bit) */
 710     CC_OP_LTGT0_64,             /* signed less/greater than 0 (64bit) */
 711
 712     CC_OP_ADD_64,               /* overflow on add (64bit) */
 713     CC_OP_ADDU_64,              /* overflow on unsigned add (64bit) */
 714     CC_OP_ADDC_64,              /* overflow on unsigned add-carry (64bit) */
 715     CC_OP_SUB_64,               /* overflow on subtraction (64bit) */
 716     CC_OP_SUBU_64,              /* overflow on unsigned subtraction (64bit) */
 717     CC_OP_SUBB_64,              /* overflow on unsigned sub-borrow (64bit) */
 718     CC_OP_ABS_64,               /* sign eval on abs (64bit) */
 719     CC_OP_NABS_64,              /* sign eval on nabs (64bit) */
 720
 721     CC_OP_ADD_32,               /* overflow on add (32bit) */
 722     CC_OP_ADDU_32,              /* overflow on unsigned add (32bit) */
 723     CC_OP_ADDC_32,              /* overflow on unsigned add-carry (32bit) */
 724     CC_OP_SUB_32,               /* overflow on subtraction (32bit) */
 725     CC_OP_SUBU_32,              /* overflow on unsigned subtraction (32bit) */
 726     CC_OP_SUBB_32,              /* overflow on unsigned sub-borrow (32bit) */
 727     CC_OP_ABS_32,               /* sign eval on abs (64bit) */
 728     CC_OP_NABS_32,              /* sign eval on nabs (64bit) */
 729
 730     CC_OP_COMP_32,              /* complement */
 731     CC_OP_COMP_64,              /* complement */
 732
 733     CC_OP_TM_32,                /* test under mask (32bit) */
 734     CC_OP_TM_64,                /* test under mask (64bit) */
 735
 736     CC_OP_NZ_F32,               /* FP dst != 0 (32bit) */
 737     CC_OP_NZ_F64,               /* FP dst != 0 (64bit) */
 738     CC_OP_NZ_F128,              /* FP dst != 0 (128bit) */
 739
 740     CC_OP_ICM,                  /* insert characters under mask */
 741     CC_OP_SLA_32,               /* Calculate shift left signed (32bit) */
 742     CC_OP_SLA_64,               /* Calculate shift left signed (64bit) */
 743     CC_OP_FLOGR,                /* find leftmost one */
 744     CC_OP_MAX
 745 };
 746
 747 static const char *cc_names[] = {
 748     [CC_OP_CONST0]    = "CC_OP_CONST0",
 749     [CC_OP_CONST1]    = "CC_OP_CONST1",
 750     [CC_OP_CONST2]    = "CC_OP_CONST2",
 751     [CC_OP_CONST3]    = "CC_OP_CONST3",
 752     [CC_OP_DYNAMIC]   = "CC_OP_DYNAMIC",
 753     [CC_OP_STATIC]    = "CC_OP_STATIC",
 754     [CC_OP_NZ]        = "CC_OP_NZ",
 755     [CC_OP_LTGT_32]   = "CC_OP_LTGT_32",
 756     [CC_OP_LTGT_64]   = "CC_OP_LTGT_64",
 757     [CC_OP_LTUGTU_32] = "CC_OP_LTUGTU_32",
 758     [CC_OP_LTUGTU_64] = "CC_OP_LTUGTU_64",
 759     [CC_OP_LTGT0_32]  = "CC_OP_LTGT0_32",
 760     [CC_OP_LTGT0_64]  = "CC_OP_LTGT0_64",
 761     [CC_OP_ADD_64]    = "CC_OP_ADD_64",
 762     [CC_OP_ADDU_64]   = "CC_OP_ADDU_64",
 763     [CC_OP_ADDC_64]   = "CC_OP_ADDC_64",
 764     [CC_OP_SUB_64]    = "CC_OP_SUB_64",
 765     [CC_OP_SUBU_64]   = "CC_OP_SUBU_64",
 766     [CC_OP_SUBB_64]   = "CC_OP_SUBB_64",
 767     [CC_OP_ABS_64]    = "CC_OP_ABS_64",
 768     [CC_OP_NABS_64]   = "CC_OP_NABS_64",
 769     [CC_OP_ADD_32]    = "CC_OP_ADD_32",
 770     [CC_OP_ADDU_32]   = "CC_OP_ADDU_32",
 771     [CC_OP_ADDC_32]   = "CC_OP_ADDC_32",
 772     [CC_OP_SUB_32]    = "CC_OP_SUB_32",
 773     [CC_OP_SUBU_32]   = "CC_OP_SUBU_32",
 774     [CC_OP_SUBB_32]   = "CC_OP_SUBB_32",
 775     [CC_OP_ABS_32]    = "CC_OP_ABS_32",
 776     [CC_OP_NABS_32]   = "CC_OP_NABS_32",
 777     [CC_OP_COMP_32]   = "CC_OP_COMP_32",
 778     [CC_OP_COMP_64]   = "CC_OP_COMP_64",
 779     [CC_OP_TM_32]     = "CC_OP_TM_32",
 780     [CC_OP_TM_64]     = "CC_OP_TM_64",
 781     [CC_OP_NZ_F32]    = "CC_OP_NZ_F32",
 782     [CC_OP_NZ_F64]    = "CC_OP_NZ_F64",
 783     [CC_OP_NZ_F128]   = "CC_OP_NZ_F128",
 784     [CC_OP_ICM]       = "CC_OP_ICM",
 785     [CC_OP_SLA_32]    = "CC_OP_SLA_32",
 786     [CC_OP_SLA_64]    = "CC_OP_SLA_64",
 787     [CC_OP_FLOGR]     = "CC_OP_FLOGR",
 788 };
 789
 790 static inline const char *cc_name(int cc_op)
 791 {
 792     return cc_names[cc_op];
 793 }
 794
 795 static inline void setcc(S390CPU *cpu, uint64_t cc)
 796 {
 797     CPUS390XState *env = &cpu->env;
 798
 799     env->psw.mask &= ~(3ull << 44);
 800     env->psw.mask |= (cc & 3) << 44;
 801     env->cc_op = cc;
 802 }
 803
 804 #ifndef CONFIG_USER_ONLY
 805
 806 typedef struct LowCore
 807 {
 808     /* prefix area: defined by architecture */
 809     uint32_t        ccw1[2];                  /* 0x000 */
 810     uint32_t        ccw2[4];                  /* 0x008 */
 811     uint8_t         pad1[0x80-0x18];          /* 0x018 */
 812     uint32_t        ext_params;               /* 0x080 */
 813     uint16_t        cpu_addr;                 /* 0x084 */
 814     uint16_t        ext_int_code;             /* 0x086 */
 815     uint16_t        svc_ilen;                 /* 0x088 */
 816     uint16_t        svc_code;                 /* 0x08a */
 817     uint16_t        pgm_ilen;                 /* 0x08c */
 818     uint16_t        pgm_code;                 /* 0x08e */
 819     uint32_t        data_exc_code;            /* 0x090 */
 820     uint16_t        mon_class_num;            /* 0x094 */
 821     uint16_t        per_perc_atmid;           /* 0x096 */
 822     uint64_t        per_address;              /* 0x098 */
 823     uint8_t         exc_access_id;            /* 0x0a0 */
 824     uint8_t         per_access_id;            /* 0x0a1 */
 825     uint8_t         op_access_id;             /* 0x0a2 */
 826     uint8_t         ar_access_id;             /* 0x0a3 */
 827     uint8_t         pad2[0xA8-0xA4];          /* 0x0a4 */
 828     uint64_t        trans_exc_code;           /* 0x0a8 */
 829     uint64_t        monitor_code;             /* 0x0b0 */
 830     uint16_t        subchannel_id;            /* 0x0b8 */
 831     uint16_t        subchannel_nr;            /* 0x0ba */
 832     uint32_t        io_int_parm;              /* 0x0bc */
 833     uint32_t        io_int_word;              /* 0x0c0 */
 834     uint8_t         pad3[0xc8-0xc4];          /* 0x0c4 */
 835     uint32_t        stfl_fac_list;            /* 0x0c8 */
 836     uint8_t         pad4[0xe8-0xcc];          /* 0x0cc */
 837     uint32_t        mcck_interruption_code[2]; /* 0x0e8 */
 838     uint8_t         pad5[0xf4-0xf0];          /* 0x0f0 */
 839     uint32_t        external_damage_code;     /* 0x0f4 */
 840     uint64_t        failing_storage_address;  /* 0x0f8 */
 841     uint8_t         pad6[0x110-0x100];        /* 0x100 */
 842     uint64_t        per_breaking_event_addr;  /* 0x110 */
 843     uint8_t         pad7[0x120-0x118];        /* 0x118 */
 844     PSW             restart_old_psw;          /* 0x120 */
 845     PSW             external_old_psw;         /* 0x130 */
 846     PSW             svc_old_psw;              /* 0x140 */
 847     PSW             program_old_psw;          /* 0x150 */
 848     PSW             mcck_old_psw;             /* 0x160 */
 849     PSW             io_old_psw;               /* 0x170 */
 850     uint8_t         pad8[0x1a0-0x180];        /* 0x180 */
 851     PSW             restart_new_psw;          /* 0x1a0 */
 852     PSW             external_new_psw;         /* 0x1b0 */
 853     PSW             svc_new_psw;              /* 0x1c0 */
 854     PSW             program_new_psw;          /* 0x1d0 */
 855     PSW             mcck_new_psw;             /* 0x1e0 */
 856     PSW             io_new_psw;               /* 0x1f0 */
 857     PSW             return_psw;               /* 0x200 */
 858     uint8_t         irb[64];                  /* 0x210 */
 859     uint64_t        sync_enter_timer;         /* 0x250 */
 860     uint64_t        async_enter_timer;        /* 0x258 */
 861     uint64_t        exit_timer;               /* 0x260 */
 862     uint64_t        last_update_timer;        /* 0x268 */
 863     uint64_t        user_timer;               /* 0x270 */
 864     uint64_t        system_timer;             /* 0x278 */
 865     uint64_t        last_update_clock;        /* 0x280 */
 866     uint64_t        steal_clock;              /* 0x288 */
 867     PSW             return_mcck_psw;          /* 0x290 */
 868     uint8_t         pad9[0xc00-0x2a0];        /* 0x2a0 */
 869     /* System info area */
 870     uint64_t        save_area[16];            /* 0xc00 */
 871     uint8_t         pad10[0xd40-0xc80];       /* 0xc80 */
 872     uint64_t        kernel_stack;             /* 0xd40 */
 873     uint64_t        thread_info;              /* 0xd48 */
 874     uint64_t        async_stack;              /* 0xd50 */
 875     uint64_t        kernel_asce;              /* 0xd58 */
 876     uint64_t        user_asce;                /* 0xd60 */
 877     uint64_t        panic_stack;              /* 0xd68 */
 878     uint64_t        user_exec_asce;           /* 0xd70 */
 879     uint8_t         pad11[0xdc0-0xd78];       /* 0xd78 */
 880
 881     /* SMP info area: defined by DJB */
 882     uint64_t        clock_comparator;         /* 0xdc0 */
 883     uint64_t        ext_call_fast;            /* 0xdc8 */
 884     uint64_t        percpu_offset;            /* 0xdd0 */
 885     uint64_t        current_task;             /* 0xdd8 */
 886     uint32_t        softirq_pending;          /* 0xde0 */
 887     uint32_t        pad_0x0de4;               /* 0xde4 */
 888     uint64_t        int_clock;                /* 0xde8 */
 889     uint8_t         pad12[0xe00-0xdf0];       /* 0xdf0 */
 890
 891     /* 0xe00 is used as indicator for dump tools */
 892     /* whether the kernel died with panic() or not */
 893     uint32_t        panic_magic;              /* 0xe00 */
 894
 895     uint8_t         pad13[0x11b8-0xe04];      /* 0xe04 */
 896
 897     /* 64 bit extparam used for pfault, diag 250 etc  */
 898     uint64_t        ext_params2;               /* 0x11B8 */
 899
 900     uint8_t         pad14[0x1200-0x11C0];      /* 0x11C0 */
 901
 902     /* System info area */
 903
 904     uint64_t        floating_pt_save_area[16]; /* 0x1200 */
 905     uint64_t        gpregs_save_area[16];      /* 0x1280 */
 906     uint32_t        st_status_fixed_logout[4]; /* 0x1300 */
 907     uint8_t         pad15[0x1318-0x1310];      /* 0x1310 */
 908     uint32_t        prefixreg_save_area;       /* 0x1318 */
 909     uint32_t        fpt_creg_save_area;        /* 0x131c */
 910     uint8_t         pad16[0x1324-0x1320];      /* 0x1320 */
 911     uint32_t        tod_progreg_save_area;     /* 0x1324 */
 912     uint32_t        cpu_timer_save_area[2];    /* 0x1328 */
 913     uint32_t        clock_comp_save_area[2];   /* 0x1330 */
 914     uint8_t         pad17[0x1340-0x1338];      /* 0x1338 */
 915     uint32_t        access_regs_save_area[16]; /* 0x1340 */
 916     uint64_t        cregs_save_area[16];       /* 0x1380 */
 917
 918     /* align to the top of the prefix area */
 919
 920     uint8_t         pad18[0x2000-0x1400];      /* 0x1400 */
 921 } QEMU_PACKED LowCore;
 922
 923 LowCore *cpu_map_lowcore(CPUS390XState *env);
 924 void cpu_unmap_lowcore(LowCore *lowcore);
 925
 926 #endif
 927
 928 /* STSI */
 929 #define STSI_LEVEL_MASK         0x00000000f0000000ULL
 930 #define STSI_LEVEL_CURRENT      0x0000000000000000ULL
 931 #define STSI_LEVEL_1            0x0000000010000000ULL
 932 #define STSI_LEVEL_2            0x0000000020000000ULL
 933 #define STSI_LEVEL_3            0x0000000030000000ULL
 934 #define STSI_R0_RESERVED_MASK   0x000000000fffff00ULL
 935 #define STSI_R0_SEL1_MASK       0x00000000000000ffULL
 936 #define STSI_R1_RESERVED_MASK   0x00000000ffff0000ULL
 937 #define STSI_R1_SEL2_MASK       0x000000000000ffffULL
 938
 939 /* Basic Machine Configuration */
 940 struct sysib_111 {
 941     uint32_t res1[8];
 942     uint8_t  manuf[16];
 943     uint8_t  type[4];
 944     uint8_t  res2[12];
 945     uint8_t  model[16];
 946     uint8_t  sequence[16];
 947     uint8_t  plant[4];
 948     uint8_t  res3[156];
 949 };
 950
 951 /* Basic Machine CPU */
 952 struct sysib_121 {
 953     uint32_t res1[80];
 954     uint8_t  sequence[16];
 955     uint8_t  plant[4];
 956     uint8_t  res2[2];
 957     uint16_t cpu_addr;
 958     uint8_t  res3[152];
 959 };
 960
 961 /* Basic Machine CPUs */
 962 struct sysib_122 {
 963     uint8_t res1[32];
 964     uint32_t capability;
 965     uint16_t total_cpus;
 966     uint16_t active_cpus;
 967     uint16_t standby_cpus;
 968     uint16_t reserved_cpus;
 969     uint16_t adjustments[2026];
 970 };
 971
 972 /* LPAR CPU */
 973 struct sysib_221 {
 974     uint32_t res1[80];
 975     uint8_t  sequence[16];
 976     uint8_t  plant[4];
 977     uint16_t cpu_id;
 978     uint16_t cpu_addr;
 979     uint8_t  res3[152];
 980 };
 981
 982 /* LPAR CPUs */
 983 struct sysib_222 {
 984     uint32_t res1[32];
 985     uint16_t lpar_num;
 986     uint8_t  res2;
 987     uint8_t  lcpuc;
 988     uint16_t total_cpus;
 989     uint16_t conf_cpus;
 990     uint16_t standby_cpus;
 991     uint16_t reserved_cpus;
 992     uint8_t  name[8];
 993     uint32_t caf;
 994     uint8_t  res3[16];
 995     uint16_t dedicated_cpus;
 996     uint16_t shared_cpus;
 997     uint8_t  res4[180];
 998 };
 999
1000 /* VM CPUs */
1001 struct sysib_322 {
1002     uint8_t  res1[31];
1003     uint8_t  count;
1004     struct {
1005         uint8_t  res2[4];
1006         uint16_t total_cpus;
1007         uint16_t conf_cpus;
1008         uint16_t standby_cpus;
1009         uint16_t reserved_cpus;
1010         uint8_t  name[8];
1011         uint32_t caf;
1012         uint8_t  cpi[16];
1013         uint8_t res5[3];
1014         uint8_t ext_name_encoding;
1015         uint32_t res3;
1016         uint8_t uuid[16];
1017     } vm[8];
1018     uint8_t res4[1504];
1019     uint8_t ext_names[8][256];
1020 };
1021
1022 /* MMU defines */
1023 #define _ASCE_ORIGIN            ~0xfffULL /* segment table origin             */
1024 #define _ASCE_SUBSPACE          0x200     /* subspace group control           */
1025 #define _ASCE_PRIVATE_SPACE     0x100     /* private space control            */
1026 #define _ASCE_ALT_EVENT         0x80      /* storage alteration event control */
1027 #define _ASCE_SPACE_SWITCH      0x40      /* space switch event               */
1028 #define _ASCE_REAL_SPACE        0x20      /* real space control               */
1029 #define _ASCE_TYPE_MASK         0x0c      /* asce table type mask             */
1030 #define _ASCE_TYPE_REGION1      0x0c      /* region first table type          */
1031 #define _ASCE_TYPE_REGION2      0x08      /* region second table type         */
1032 #define _ASCE_TYPE_REGION3      0x04      /* region third table type          */
1033 #define _ASCE_TYPE_SEGMENT      0x00      /* segment table type               */
1034 #define _ASCE_TABLE_LENGTH      0x03      /* region table length              */
1035
1036 #define _REGION_ENTRY_ORIGIN    ~0xfffULL /* region/segment table origin      */
1037 #define _REGION_ENTRY_RO        0x200     /* region/segment protection bit    */
1038 #define _REGION_ENTRY_TF        0xc0      /* region/segment table offset      */
1039 #define _REGION_ENTRY_INV       0x20      /* invalid region table entry       */
1040 #define _REGION_ENTRY_TYPE_MASK 0x0c      /* region/segment table type mask   */
1041 #define _REGION_ENTRY_TYPE_R1   0x0c      /* region first table type          */
1042 #define _REGION_ENTRY_TYPE_R2   0x08      /* region second table type         */
1043 #define _REGION_ENTRY_TYPE_R3   0x04      /* region third table type          */
1044 #define _REGION_ENTRY_LENGTH    0x03      /* region third length              */
1045
1046 #define _SEGMENT_ENTRY_ORIGIN   ~0x7ffULL /* segment table origin             */
1047 #define _SEGMENT_ENTRY_FC       0x400     /* format control                   */
1048 #define _SEGMENT_ENTRY_RO       0x200     /* page protection bit              */
1049 #define _SEGMENT_ENTRY_INV      0x20      /* invalid segment table entry      */
1050
1051 #define VADDR_PX                0xff000   /* page index bits                  */
1052
1053 #define _PAGE_RO        0x200            /* HW read-only bit  */
1054 #define _PAGE_INVALID   0x400            /* HW invalid bit    */
1055 #define _PAGE_RES0      0x800            /* bit must be zero  */
1056
1057 #define SK_C                    (0x1 << 1)
1058 #define SK_R                    (0x1 << 2)
1059 #define SK_F                    (0x1 << 3)
1060 #define SK_ACC_MASK             (0xf << 4)
1061
1062 /* SIGP order codes */
1063 #define SIGP_SENSE             0x01
1064 #define SIGP_EXTERNAL_CALL     0x02
1065 #define SIGP_EMERGENCY         0x03
1066 #define SIGP_START             0x04
1067 #define SIGP_STOP              0x05
1068 #define SIGP_RESTART           0x06
1069 #define SIGP_STOP_STORE_STATUS 0x09
1070 #define SIGP_INITIAL_CPU_RESET 0x0b
1071 #define SIGP_CPU_RESET         0x0c
1072 #define SIGP_SET_PREFIX        0x0d
1073 #define SIGP_STORE_STATUS_ADDR 0x0e
1074 #define SIGP_SET_ARCH          0x12
1075 #define SIGP_STORE_ADTL_STATUS 0x17
1076
1077 /* SIGP condition codes */
1078 #define SIGP_CC_ORDER_CODE_ACCEPTED 0
1079 #define SIGP_CC_STATUS_STORED       1
1080 #define SIGP_CC_BUSY                2
1081 #define SIGP_CC_NOT_OPERATIONAL     3
1082
1083 /* SIGP status bits */
1084 #define SIGP_STAT_EQUIPMENT_CHECK   0x80000000UL
1085 #define SIGP_STAT_INCORRECT_STATE   0x00000200UL
1086 #define SIGP_STAT_INVALID_PARAMETER 0x00000100UL
1087 #define SIGP_STAT_EXT_CALL_PENDING  0x00000080UL
1088 #define SIGP_STAT_STOPPED           0x00000040UL
1089 #define SIGP_STAT_OPERATOR_INTERV   0x00000020UL
1090 #define SIGP_STAT_CHECK_STOP        0x00000010UL
1091 #define SIGP_STAT_INOPERATIVE       0x00000004UL
1092 #define SIGP_STAT_INVALID_ORDER     0x00000002UL
1093 #define SIGP_STAT_RECEIVER_CHECK    0x00000001UL
1094
1095 /* SIGP SET ARCHITECTURE modes */
1096 #define SIGP_MODE_ESA_S390 0
1097 #define SIGP_MODE_Z_ARCH_TRANS_ALL_PSW 1
1098 #define SIGP_MODE_Z_ARCH_TRANS_CUR_PSW 2
1099
1100 /* SIGP order code mask corresponding to bit positions 56-63 */
1101 #define SIGP_ORDER_MASK 0x000000ff
1102
1103 void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr);
1104 uint64_t get_psw_mask(CPUS390XState *env);
1105 target_ulong mmu_real2abs(CPUS390XState *env, target_ulong raddr);
1106 int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc,
1107                   target_ulong *raddr, int *flags, bool exc);
1108 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code);
1109 uint32_t calc_cc(CPUS390XState *env, uint32_t cc_op, uint64_t src, uint64_t dst,
1110                  uint64_t vr);
1111 void s390_cpu_recompute_watchpoints(CPUState *cs);
1112
1113 int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
1114                          int len, bool is_write);
1115
1116 #define s390_cpu_virt_mem_read(cpu, laddr, ar, dest, len)    \
1117         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, false)
1118 #define s390_cpu_virt_mem_write(cpu, laddr, ar, dest, len)       \
1119         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, true)
1120 #define s390_cpu_virt_mem_check_write(cpu, laddr, ar, len)   \
1121         s390_cpu_virt_mem_rw(cpu, laddr, ar, NULL, len, true)
1122
1123 /* The value of the TOD clock for 1.1.1970. */
1124 #define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
1125
1126 /* Converts ns to s390's clock format */
1127 static inline uint64_t time2tod(uint64_t ns) {
1128     return (ns << 9) / 125;
1129 }
1130
1131 /* Converts s390's clock format to ns */
1132 static inline uint64_t tod2time(uint64_t t) {
1133     return (t * 125) >> 9;
1134 }
1135
1136 /* from s390-virtio-ccw */
1137 #define MEM_SECTION_SIZE             0x10000000UL
1138 #define MAX_AVAIL_SLOTS              32
1139
1140 /* fpu_helper.c */
1141 uint32_t set_cc_nz_f32(float32 v);
1142 uint32_t set_cc_nz_f64(float64 v);
1143 uint32_t set_cc_nz_f128(float128 v);
1144
1145 /* misc_helper.c */
1146 #ifndef CONFIG_USER_ONLY
1147 int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3);
1148 void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3);
1149 #endif
1150 /* automatically detect the instruction length */
1151 #define ILEN_AUTO                   0xff
1152 void program_interrupt(CPUS390XState *env, uint32_t code, int ilen);
1153 void trigger_pgm_exception(CPUS390XState *env, uint32_t code, uint32_t ilen);
1154 void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp,
1155                                      uintptr_t retaddr);
1156
1157 #ifdef CONFIG_KVM
1158 void kvm_s390_program_interrupt(S390CPU *cpu, uint16_t code);
1159 void kvm_s390_io_interrupt(uint16_t subchannel_id,
1160                            uint16_t subchannel_nr, uint32_t io_int_parm,
1161                            uint32_t io_int_word);
1162 void kvm_s390_crw_mchk(void);
1163 void kvm_s390_enable_css_support(S390CPU *cpu);
1164 int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
1165                                     int vq, bool assign);
1166 int kvm_s390_cpu_restart(S390CPU *cpu);
1167 int kvm_s390_get_memslot_count(KVMState *s);
1168 int kvm_s390_cmma_active(void);
1169 void kvm_s390_cmma_reset(void);
1170 int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state);
1171 void kvm_s390_reset_vcpu(S390CPU *cpu);
1172 int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit, uint64_t *hw_limit);
1173 void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu);
1174 int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu);
1175 int kvm_s390_get_ri(void);
1176 int kvm_s390_get_gs(void);
1177 void kvm_s390_crypto_reset(void);
1178 #else
1179 static inline void kvm_s390_program_interrupt(S390CPU *cpu, uint16_t code)
1180 {
1181 }
1182 static inline void kvm_s390_io_interrupt(uint16_t subchannel_id,
1183                                         uint16_t subchannel_nr,
1184                                         uint32_t io_int_parm,
1185                                         uint32_t io_int_word)
1186 {
1187 }
1188 static inline void kvm_s390_crw_mchk(void)
1189 {
1190 }
1191 static inline void kvm_s390_enable_css_support(S390CPU *cpu)
1192 {
1193 }
1194 static inline int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier,
1195                                                   uint32_t sch, int vq,
1196                                                   bool assign)
1197 {
1198     return -ENOSYS;
1199 }
1200 static inline int kvm_s390_cpu_restart(S390CPU *cpu)
1201 {
1202     return -ENOSYS;
1203 }
1204 static inline void kvm_s390_cmma_reset(void)
1205 {
1206 }
1207 static inline int kvm_s390_get_memslot_count(KVMState *s)
1208 {
1209   return MAX_AVAIL_SLOTS;
1210 }
1211 static inline int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
1212 {
1213     return -ENOSYS;
1214 }
1215 static inline void kvm_s390_reset_vcpu(S390CPU *cpu)
1216 {
1217 }
1218 static inline int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit,
1219                                          uint64_t *hw_limit)
1220 {
1221     return 0;
1222 }
1223 static inline void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
1224 {
1225 }
1226 static inline int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
1227 {
1228     return 0;
1229 }
1230 static inline int kvm_s390_get_ri(void)
1231 {
1232     return 0;
1233 }
1234 static inline int kvm_s390_get_gs(void)
1235 {
1236     return 0;
1237 }
1238 static inline void kvm_s390_crypto_reset(void)
1239 {
1240 }
1241 #endif
1242
1243 static inline int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit)
1244 {
1245     if (kvm_enabled()) {
1246         return kvm_s390_set_mem_limit(kvm_state, new_limit, hw_limit);
1247     }
1248     return 0;
1249 }
1250
1251 static inline void s390_cmma_reset(void)
1252 {
1253     if (kvm_enabled()) {
1254         kvm_s390_cmma_reset();
1255     }
1256 }
1257
1258 static inline int s390_cpu_restart(S390CPU *cpu)
1259 {
1260     if (kvm_enabled()) {
1261         return kvm_s390_cpu_restart(cpu);
1262     }
1263     return -ENOSYS;
1264 }
1265
1266 static inline int s390_get_memslot_count(KVMState *s)
1267 {
1268     if (kvm_enabled()) {
1269         return kvm_s390_get_memslot_count(s);
1270     } else {
1271         return MAX_AVAIL_SLOTS;
1272     }
1273 }
1274
1275 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
1276                        uint32_t io_int_parm, uint32_t io_int_word);
1277 void s390_crw_mchk(void);
1278
1279 static inline int s390_assign_subch_ioeventfd(EventNotifier *notifier,
1280                                               uint32_t sch_id, int vq,
1281                                               bool assign)
1282 {
1283     if (kvm_enabled()) {
1284         return kvm_s390_assign_subch_ioeventfd(notifier, sch_id, vq, assign);
1285     } else {
1286         return 0;
1287     }
1288 }
1289
1290 static inline void s390_crypto_reset(void)
1291 {
1292     if (kvm_enabled()) {
1293         kvm_s390_crypto_reset();
1294     }
1295 }
1296
1297 static inline bool s390_get_squash_mcss(void)
1298 {
1299     if (object_property_get_bool(OBJECT(qdev_get_machine()), "s390-squash-mcss",
1300                                  NULL)) {
1301         return true;
1302     }
1303
1304     return false;
1305 }
1306
1307 /* machine check interruption code */
1308
1309 /* subclasses */
1310 #define MCIC_SC_SD 0x8000000000000000ULL
1311 #define MCIC_SC_PD 0x4000000000000000ULL
1312 #define MCIC_SC_SR 0x2000000000000000ULL
1313 #define MCIC_SC_CD 0x0800000000000000ULL
1314 #define MCIC_SC_ED 0x0400000000000000ULL
1315 #define MCIC_SC_DG 0x0100000000000000ULL
1316 #define MCIC_SC_W  0x0080000000000000ULL
1317 #define MCIC_SC_CP 0x0040000000000000ULL
1318 #define MCIC_SC_SP 0x0020000000000000ULL
1319 #define MCIC_SC_CK 0x0010000000000000ULL
1320
1321 /* subclass modifiers */
1322 #define MCIC_SCM_B  0x0002000000000000ULL
1323 #define MCIC_SCM_DA 0x0000000020000000ULL
1324 #define MCIC_SCM_AP 0x0000000000080000ULL
1325
1326 /* storage errors */
1327 #define MCIC_SE_SE 0x0000800000000000ULL
1328 #define MCIC_SE_SC 0x0000400000000000ULL
1329 #define MCIC_SE_KE 0x0000200000000000ULL
1330 #define MCIC_SE_DS 0x0000100000000000ULL
1331 #define MCIC_SE_IE 0x0000000080000000ULL
1332
1333 /* validity bits */
1334 #define MCIC_VB_WP 0x0000080000000000ULL
1335 #define MCIC_VB_MS 0x0000040000000000ULL
1336 #define MCIC_VB_PM 0x0000020000000000ULL
1337 #define MCIC_VB_IA 0x0000010000000000ULL
1338 #define MCIC_VB_FA 0x0000008000000000ULL
1339 #define MCIC_VB_VR 0x0000004000000000ULL
1340 #define MCIC_VB_EC 0x0000002000000000ULL
1341 #define MCIC_VB_FP 0x0000001000000000ULL
1342 #define MCIC_VB_GR 0x0000000800000000ULL
1343 #define MCIC_VB_CR 0x0000000400000000ULL
1344 #define MCIC_VB_ST 0x0000000100000000ULL
1345 #define MCIC_VB_AR 0x0000000040000000ULL
1346 #define MCIC_VB_GS 0x0000000008000000ULL
1347 #define MCIC_VB_PR 0x0000000000200000ULL
1348 #define MCIC_VB_FC 0x0000000000100000ULL
1349 #define MCIC_VB_CT 0x0000000000020000ULL
1350 #define MCIC_VB_CC 0x0000000000010000ULL
1351
1352 #endif