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 #ifndef CPU_S390X_H
  23 #define CPU_S390X_H
  24
  25 #include "qemu-common.h"
  26 #include "cpu-qom.h"
  27
  28 #define TARGET_LONG_BITS 64
  29
  30 #define ELF_MACHINE_UNAME "S390X"
  31
  32 #define CPUArchState struct CPUS390XState
  33
  34 #include "exec/cpu-defs.h"
  35 #define TARGET_PAGE_BITS 12
  36
  37 #define TARGET_PHYS_ADDR_SPACE_BITS 64
  38 #define TARGET_VIRT_ADDR_SPACE_BITS 64
  39
  40 #include "exec/cpu-all.h"
  41
  42 #include "fpu/softfloat.h"
  43
  44 #define NB_MMU_MODES 3
  45 #define TARGET_INSN_START_EXTRA_WORDS 1
  46
  47 #define MMU_MODE0_SUFFIX _primary
  48 #define MMU_MODE1_SUFFIX _secondary
  49 #define MMU_MODE2_SUFFIX _home
  50
  51 #define MMU_USER_IDX 0
  52
  53 #define MAX_EXT_QUEUE 16
  54 #define MAX_IO_QUEUE 16
  55 #define MAX_MCHK_QUEUE 16
  56
  57 #define PSW_MCHK_MASK 0x0004000000000000
  58 #define PSW_IO_MASK 0x0200000000000000
  59
  60 typedef struct PSW {
  61     uint64_t mask;
  62     uint64_t addr;
  63 } PSW;
  64
  65 typedef struct ExtQueue {
  66     uint32_t code;
  67     uint32_t param;
  68     uint32_t param64;
  69 } ExtQueue;
  70
  71 typedef struct IOIntQueue {
  72     uint16_t id;
  73     uint16_t nr;
  74     uint32_t parm;
  75     uint32_t word;
  76 } IOIntQueue;
  77
  78 typedef struct MchkQueue {
  79     uint16_t type;
  80 } MchkQueue;
  81
  82 typedef struct CPUS390XState {
  83     uint64_t regs[16];     /* GP registers */
  84     /*
  85      * The floating point registers are part of the vector registers.
  86      * vregs[0][0] -> vregs[15][0] are 16 floating point registers
  87      */
  88     CPU_DoubleU vregs[32][2];  /* vector registers */
  89     uint32_t aregs[16];    /* access registers */
  90
  91     uint32_t fpc;          /* floating-point control register */
  92     uint32_t cc_op;
  93
  94     float_status fpu_status; /* passed to softfloat lib */
  95
  96     /* The low part of a 128-bit return, or remainder of a divide.  */
  97     uint64_t retxl;
  98
  99     PSW psw;
 100
 101     uint64_t cc_src;
 102     uint64_t cc_dst;
 103     uint64_t cc_vr;
 104
 105     uint64_t __excp_addr;
 106     uint64_t psa;
 107
 108     uint32_t int_pgm_code;
 109     uint32_t int_pgm_ilen;
 110
 111     uint32_t int_svc_code;
 112     uint32_t int_svc_ilen;
 113
 114     uint64_t per_address;
 115     uint16_t per_perc_atmid;
 116
 117     uint64_t cregs[16]; /* control registers */
 118
 119     ExtQueue ext_queue[MAX_EXT_QUEUE];
 120     IOIntQueue io_queue[MAX_IO_QUEUE][8];
 121     MchkQueue mchk_queue[MAX_MCHK_QUEUE];
 122
 123     int pending_int;
 124     int ext_index;
 125     int io_index[8];
 126     int mchk_index;
 127
 128     uint64_t ckc;
 129     uint64_t cputm;
 130     uint32_t todpr;
 131
 132     uint64_t pfault_token;
 133     uint64_t pfault_compare;
 134     uint64_t pfault_select;
 135
 136     uint64_t gbea;
 137     uint64_t pp;
 138
 139     uint8_t riccb[64];
 140
 141     CPU_COMMON
 142
 143     /* reset does memset(0) up to here */
 144
 145     uint32_t cpu_num;
 146     uint32_t machine_type;
 147
 148     uint64_t tod_offset;
 149     uint64_t tod_basetime;
 150     QEMUTimer *tod_timer;
 151
 152     QEMUTimer *cpu_timer;
 153
 154     /*
 155      * The cpu state represents the logical state of a cpu. In contrast to other
 156      * architectures, there is a difference between a halt and a stop on s390.
 157      * If all cpus are either stopped (including check stop) or in the disabled
 158      * wait state, the vm can be shut down.
 159      */
 160 #define CPU_STATE_UNINITIALIZED        0x00
 161 #define CPU_STATE_STOPPED              0x01
 162 #define CPU_STATE_CHECK_STOP           0x02
 163 #define CPU_STATE_OPERATING            0x03
 164 #define CPU_STATE_LOAD                 0x04
 165     uint8_t cpu_state;
 166
 167     /* currently processed sigp order */
 168     uint8_t sigp_order;
 169
 170 } CPUS390XState;
 171
 172 static inline CPU_DoubleU *get_freg(CPUS390XState *cs, int nr)
 173 {
 174     return &cs->vregs[nr][0];
 175 }
 176
 177 /**
 178  * S390CPU:
 179  * @env: #CPUS390XState.
 180  *
 181  * An S/390 CPU.
 182  */
 183 struct S390CPU {
 184     /*< private >*/
 185     CPUState parent_obj;
 186     /*< public >*/
 187
 188     CPUS390XState env;
 189     int64_t id;
 190     /* needed for live migration */
 191     void *irqstate;
 192     uint32_t irqstate_saved_size;
 193 };
 194
 195 static inline S390CPU *s390_env_get_cpu(CPUS390XState *env)
 196 {
 197     return container_of(env, S390CPU, env);
 198 }
 199
 200 #define ENV_GET_CPU(e) CPU(s390_env_get_cpu(e))
 201
 202 #define ENV_OFFSET offsetof(S390CPU, env)
 203
 204 #ifndef CONFIG_USER_ONLY
 205 extern const struct VMStateDescription vmstate_s390_cpu;
 206 #endif
 207
 208 void s390_cpu_do_interrupt(CPUState *cpu);
 209 bool s390_cpu_exec_interrupt(CPUState *cpu, int int_req);
 210 void s390_cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
 211                          int flags);
 212 int s390_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
 213                               int cpuid, void *opaque);
 214
 215 hwaddr s390_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
 216 hwaddr s390_cpu_get_phys_addr_debug(CPUState *cpu, vaddr addr);
 217 int s390_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
 218 int s390_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
 219 void s390_cpu_gdb_init(CPUState *cs);
 220 void s390x_cpu_debug_excp_handler(CPUState *cs);
 221
 222 #include <sysemu/kvm.h>
 223
 224 /* distinguish between 24 bit and 31 bit addressing */
 225 #define HIGH_ORDER_BIT 0x80000000
 226
 227 /* Interrupt Codes */
 228 /* Program Interrupts */
 229 #define PGM_OPERATION                   0x0001
 230 #define PGM_PRIVILEGED                  0x0002
 231 #define PGM_EXECUTE                     0x0003
 232 #define PGM_PROTECTION                  0x0004
 233 #define PGM_ADDRESSING                  0x0005
 234 #define PGM_SPECIFICATION               0x0006
 235 #define PGM_DATA                        0x0007
 236 #define PGM_FIXPT_OVERFLOW              0x0008
 237 #define PGM_FIXPT_DIVIDE                0x0009
 238 #define PGM_DEC_OVERFLOW                0x000a
 239 #define PGM_DEC_DIVIDE                  0x000b
 240 #define PGM_HFP_EXP_OVERFLOW            0x000c
 241 #define PGM_HFP_EXP_UNDERFLOW           0x000d
 242 #define PGM_HFP_SIGNIFICANCE            0x000e
 243 #define PGM_HFP_DIVIDE                  0x000f
 244 #define PGM_SEGMENT_TRANS               0x0010
 245 #define PGM_PAGE_TRANS                  0x0011
 246 #define PGM_TRANS_SPEC                  0x0012
 247 #define PGM_SPECIAL_OP                  0x0013
 248 #define PGM_OPERAND                     0x0015
 249 #define PGM_TRACE_TABLE                 0x0016
 250 #define PGM_SPACE_SWITCH                0x001c
 251 #define PGM_HFP_SQRT                    0x001d
 252 #define PGM_PC_TRANS_SPEC               0x001f
 253 #define PGM_AFX_TRANS                   0x0020
 254 #define PGM_ASX_TRANS                   0x0021
 255 #define PGM_LX_TRANS                    0x0022
 256 #define PGM_EX_TRANS                    0x0023
 257 #define PGM_PRIM_AUTH                   0x0024
 258 #define PGM_SEC_AUTH                    0x0025
 259 #define PGM_ALET_SPEC                   0x0028
 260 #define PGM_ALEN_SPEC                   0x0029
 261 #define PGM_ALE_SEQ                     0x002a
 262 #define PGM_ASTE_VALID                  0x002b
 263 #define PGM_ASTE_SEQ                    0x002c
 264 #define PGM_EXT_AUTH                    0x002d
 265 #define PGM_STACK_FULL                  0x0030
 266 #define PGM_STACK_EMPTY                 0x0031
 267 #define PGM_STACK_SPEC                  0x0032
 268 #define PGM_STACK_TYPE                  0x0033
 269 #define PGM_STACK_OP                    0x0034
 270 #define PGM_ASCE_TYPE                   0x0038
 271 #define PGM_REG_FIRST_TRANS             0x0039
 272 #define PGM_REG_SEC_TRANS               0x003a
 273 #define PGM_REG_THIRD_TRANS             0x003b
 274 #define PGM_MONITOR                     0x0040
 275 #define PGM_PER                         0x0080
 276 #define PGM_CRYPTO                      0x0119
 277
 278 /* External Interrupts */
 279 #define EXT_INTERRUPT_KEY               0x0040
 280 #define EXT_CLOCK_COMP                  0x1004
 281 #define EXT_CPU_TIMER                   0x1005
 282 #define EXT_MALFUNCTION                 0x1200
 283 #define EXT_EMERGENCY                   0x1201
 284 #define EXT_EXTERNAL_CALL               0x1202
 285 #define EXT_ETR                         0x1406
 286 #define EXT_SERVICE                     0x2401
 287 #define EXT_VIRTIO                      0x2603
 288
 289 /* PSW defines */
 290 #undef PSW_MASK_PER
 291 #undef PSW_MASK_DAT
 292 #undef PSW_MASK_IO
 293 #undef PSW_MASK_EXT
 294 #undef PSW_MASK_KEY
 295 #undef PSW_SHIFT_KEY
 296 #undef PSW_MASK_MCHECK
 297 #undef PSW_MASK_WAIT
 298 #undef PSW_MASK_PSTATE
 299 #undef PSW_MASK_ASC
 300 #undef PSW_MASK_CC
 301 #undef PSW_MASK_PM
 302 #undef PSW_MASK_64
 303 #undef PSW_MASK_32
 304 #undef PSW_MASK_ESA_ADDR
 305
 306 #define PSW_MASK_PER            0x4000000000000000ULL
 307 #define PSW_MASK_DAT            0x0400000000000000ULL
 308 #define PSW_MASK_IO             0x0200000000000000ULL
 309 #define PSW_MASK_EXT            0x0100000000000000ULL
 310 #define PSW_MASK_KEY            0x00F0000000000000ULL
 311 #define PSW_SHIFT_KEY           56
 312 #define PSW_MASK_MCHECK         0x0004000000000000ULL
 313 #define PSW_MASK_WAIT           0x0002000000000000ULL
 314 #define PSW_MASK_PSTATE         0x0001000000000000ULL
 315 #define PSW_MASK_ASC            0x0000C00000000000ULL
 316 #define PSW_MASK_CC             0x0000300000000000ULL
 317 #define PSW_MASK_PM             0x00000F0000000000ULL
 318 #define PSW_MASK_64             0x0000000100000000ULL
 319 #define PSW_MASK_32             0x0000000080000000ULL
 320 #define PSW_MASK_ESA_ADDR       0x000000007fffffffULL
 321
 322 #undef PSW_ASC_PRIMARY
 323 #undef PSW_ASC_ACCREG
 324 #undef PSW_ASC_SECONDARY
 325 #undef PSW_ASC_HOME
 326
 327 #define PSW_ASC_PRIMARY         0x0000000000000000ULL
 328 #define PSW_ASC_ACCREG          0x0000400000000000ULL
 329 #define PSW_ASC_SECONDARY       0x0000800000000000ULL
 330 #define PSW_ASC_HOME            0x0000C00000000000ULL
 331
 332 /* tb flags */
 333
 334 #define FLAG_MASK_PER           (PSW_MASK_PER    >> 32)
 335 #define FLAG_MASK_DAT           (PSW_MASK_DAT    >> 32)
 336 #define FLAG_MASK_IO            (PSW_MASK_IO     >> 32)
 337 #define FLAG_MASK_EXT           (PSW_MASK_EXT    >> 32)
 338 #define FLAG_MASK_KEY           (PSW_MASK_KEY    >> 32)
 339 #define FLAG_MASK_MCHECK        (PSW_MASK_MCHECK >> 32)
 340 #define FLAG_MASK_WAIT          (PSW_MASK_WAIT   >> 32)
 341 #define FLAG_MASK_PSTATE        (PSW_MASK_PSTATE >> 32)
 342 #define FLAG_MASK_ASC           (PSW_MASK_ASC    >> 32)
 343 #define FLAG_MASK_CC            (PSW_MASK_CC     >> 32)
 344 #define FLAG_MASK_PM            (PSW_MASK_PM     >> 32)
 345 #define FLAG_MASK_64            (PSW_MASK_64     >> 32)
 346 #define FLAG_MASK_32            0x00001000
 347
 348 /* Control register 0 bits */
 349 #define CR0_LOWPROT             0x0000000010000000ULL
 350 #define CR0_EDAT                0x0000000000800000ULL
 351
 352 /* MMU */
 353 #define MMU_PRIMARY_IDX         0
 354 #define MMU_SECONDARY_IDX       1
 355 #define MMU_HOME_IDX            2
 356
 357 static inline int cpu_mmu_index (CPUS390XState *env, bool ifetch)
 358 {
 359     switch (env->psw.mask & PSW_MASK_ASC) {
 360     case PSW_ASC_PRIMARY:
 361         return MMU_PRIMARY_IDX;
 362     case PSW_ASC_SECONDARY:
 363         return MMU_SECONDARY_IDX;
 364     case PSW_ASC_HOME:
 365         return MMU_HOME_IDX;
 366     case PSW_ASC_ACCREG:
 367         /* Fallthrough: access register mode is not yet supported */
 368     default:
 369         abort();
 370     }
 371 }
 372
 373 static inline uint64_t cpu_mmu_idx_to_asc(int mmu_idx)
 374 {
 375     switch (mmu_idx) {
 376     case MMU_PRIMARY_IDX:
 377         return PSW_ASC_PRIMARY;
 378     case MMU_SECONDARY_IDX:
 379         return PSW_ASC_SECONDARY;
 380     case MMU_HOME_IDX:
 381         return PSW_ASC_HOME;
 382     default:
 383         abort();
 384     }
 385 }
 386
 387 static inline void cpu_get_tb_cpu_state(CPUS390XState* env, target_ulong *pc,
 388                                         target_ulong *cs_base, uint32_t *flags)
 389 {
 390     *pc = env->psw.addr;
 391     *cs_base = 0;
 392     *flags = ((env->psw.mask >> 32) & ~FLAG_MASK_CC) |
 393              ((env->psw.mask & PSW_MASK_32) ? FLAG_MASK_32 : 0);
 394 }
 395
 396 /* While the PoO talks about ILC (a number between 1-3) what is actually
 397    stored in LowCore is shifted left one bit (an even between 2-6).  As
 398    this is the actual length of the insn and therefore more useful, that
 399    is what we want to pass around and manipulate.  To make sure that we
 400    have applied this distinction universally, rename the "ILC" to "ILEN".  */
 401 static inline int get_ilen(uint8_t opc)
 402 {
 403     switch (opc >> 6) {
 404     case 0:
 405         return 2;
 406     case 1:
 407     case 2:
 408         return 4;
 409     default:
 410         return 6;
 411     }
 412 }
 413
 414 /* PER bits from control register 9 */
 415 #define PER_CR9_EVENT_BRANCH           0x80000000
 416 #define PER_CR9_EVENT_IFETCH           0x40000000
 417 #define PER_CR9_EVENT_STORE            0x20000000
 418 #define PER_CR9_EVENT_STORE_REAL       0x08000000
 419 #define PER_CR9_EVENT_NULLIFICATION    0x01000000
 420 #define PER_CR9_CONTROL_BRANCH_ADDRESS 0x00800000
 421 #define PER_CR9_CONTROL_ALTERATION     0x00200000
 422
 423 /* PER bits from the PER CODE/ATMID/AI in lowcore */
 424 #define PER_CODE_EVENT_BRANCH          0x8000
 425 #define PER_CODE_EVENT_IFETCH          0x4000
 426 #define PER_CODE_EVENT_STORE           0x2000
 427 #define PER_CODE_EVENT_STORE_REAL      0x0800
 428 #define PER_CODE_EVENT_NULLIFICATION   0x0100
 429
 430 /* Compute the ATMID field that is stored in the per_perc_atmid lowcore
 431    entry when a PER exception is triggered.  */
 432 static inline uint8_t get_per_atmid(CPUS390XState *env)
 433 {
 434     return ((env->psw.mask & PSW_MASK_64) ?      (1 << 7) : 0) |
 435            (                                     (1 << 6)    ) |
 436            ((env->psw.mask & PSW_MASK_32) ?      (1 << 5) : 0) |
 437            ((env->psw.mask & PSW_MASK_DAT)?      (1 << 4) : 0) |
 438            ((env->psw.mask & PSW_ASC_SECONDARY)? (1 << 3) : 0) |
 439            ((env->psw.mask & PSW_ASC_ACCREG)?    (1 << 2) : 0);
 440 }
 441
 442 /* Check if an address is within the PER starting address and the PER
 443    ending address.  The address range might loop.  */
 444 static inline bool get_per_in_range(CPUS390XState *env, uint64_t addr)
 445 {
 446     if (env->cregs[10] <= env->cregs[11]) {
 447         return env->cregs[10] <= addr && addr <= env->cregs[11];
 448     } else {
 449         return env->cregs[10] <= addr || addr <= env->cregs[11];
 450     }
 451 }
 452
 453 #ifndef CONFIG_USER_ONLY
 454 /* In several cases of runtime exceptions, we havn't recorded the true
 455    instruction length.  Use these codes when raising exceptions in order
 456    to re-compute the length by examining the insn in memory.  */
 457 #define ILEN_LATER       0x20
 458 #define ILEN_LATER_INC   0x21
 459 void trigger_pgm_exception(CPUS390XState *env, uint32_t code, uint32_t ilen);
 460 #endif
 461
 462 S390CPU *cpu_s390x_init(const char *cpu_model);
 463 S390CPU *s390x_new_cpu(const char *cpu_model, int64_t id, Error **errp);
 464 S390CPU *cpu_s390x_create(const char *cpu_model, Error **errp);
 465 void s390x_translate_init(void);
 466 int cpu_s390x_exec(CPUState *cpu);
 467
 468 /* you can call this signal handler from your SIGBUS and SIGSEGV
 469    signal handlers to inform the virtual CPU of exceptions. non zero
 470    is returned if the signal was handled by the virtual CPU.  */
 471 int cpu_s390x_signal_handler(int host_signum, void *pinfo,
 472                            void *puc);
 473 int s390_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
 474                               int mmu_idx);
 475
 476
 477 #ifndef CONFIG_USER_ONLY
 478 void do_restart_interrupt(CPUS390XState *env);
 479
 480 static inline hwaddr decode_basedisp_s(CPUS390XState *env, uint32_t ipb,
 481                                        uint8_t *ar)
 482 {
 483     hwaddr addr = 0;
 484     uint8_t reg;
 485
 486     reg = ipb >> 28;
 487     if (reg > 0) {
 488         addr = env->regs[reg];
 489     }
 490     addr += (ipb >> 16) & 0xfff;
 491     if (ar) {
 492         *ar = reg;
 493     }
 494
 495     return addr;
 496 }
 497
 498 /* Base/displacement are at the same locations. */
 499 #define decode_basedisp_rs decode_basedisp_s
 500
 501 /* helper functions for run_on_cpu() */
 502 static inline void s390_do_cpu_reset(void *arg)
 503 {
 504     CPUState *cs = arg;
 505     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 506
 507     scc->cpu_reset(cs);
 508 }
 509 static inline void s390_do_cpu_full_reset(void *arg)
 510 {
 511     CPUState *cs = arg;
 512
 513     cpu_reset(cs);
 514 }
 515
 516 void s390x_tod_timer(void *opaque);
 517 void s390x_cpu_timer(void *opaque);
 518
 519 int s390_virtio_hypercall(CPUS390XState *env);
 520
 521 #ifdef CONFIG_KVM
 522 void kvm_s390_service_interrupt(uint32_t parm);
 523 void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq);
 524 void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq);
 525 int kvm_s390_inject_flic(struct kvm_s390_irq *irq);
 526 void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code);
 527 int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
 528                     int len, bool is_write);
 529 int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_clock);
 530 int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_clock);
 531 #else
 532 static inline void kvm_s390_service_interrupt(uint32_t parm)
 533 {
 534 }
 535 static inline int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
 536 {
 537     return -ENOSYS;
 538 }
 539 static inline int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
 540 {
 541     return -ENOSYS;
 542 }
 543 static inline int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar,
 544                                   void *hostbuf, int len, bool is_write)
 545 {
 546     return -ENOSYS;
 547 }
 548 static inline void kvm_s390_access_exception(S390CPU *cpu, uint16_t code,
 549                                              uint64_t te_code)
 550 {
 551 }
 552 #endif
 553
 554 static inline int s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
 555 {
 556     if (kvm_enabled()) {
 557         return kvm_s390_get_clock(tod_high, tod_low);
 558     }
 559     /* Fixme TCG */
 560     *tod_high = 0;
 561     *tod_low = 0;
 562     return 0;
 563 }
 564
 565 static inline int s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
 566 {
 567     if (kvm_enabled()) {
 568         return kvm_s390_set_clock(tod_high, tod_low);
 569     }
 570     /* Fixme TCG */
 571     return 0;
 572 }
 573
 574 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
 575 unsigned int s390_cpu_halt(S390CPU *cpu);
 576 void s390_cpu_unhalt(S390CPU *cpu);
 577 unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu);
 578 static inline uint8_t s390_cpu_get_state(S390CPU *cpu)
 579 {
 580     return cpu->env.cpu_state;
 581 }
 582
 583 void gtod_save(QEMUFile *f, void *opaque);
 584 int gtod_load(QEMUFile *f, void *opaque, int version_id);
 585
 586 void cpu_inject_ext(S390CPU *cpu, uint32_t code, uint32_t param,
 587                     uint64_t param64);
 588
 589 /* ioinst.c */
 590 void ioinst_handle_xsch(S390CPU *cpu, uint64_t reg1);
 591 void ioinst_handle_csch(S390CPU *cpu, uint64_t reg1);
 592 void ioinst_handle_hsch(S390CPU *cpu, uint64_t reg1);
 593 void ioinst_handle_msch(S390CPU *cpu, uint64_t reg1, uint32_t ipb);
 594 void ioinst_handle_ssch(S390CPU *cpu, uint64_t reg1, uint32_t ipb);
 595 void ioinst_handle_stcrw(S390CPU *cpu, uint32_t ipb);
 596 void ioinst_handle_stsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb);
 597 int ioinst_handle_tsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb);
 598 void ioinst_handle_chsc(S390CPU *cpu, uint32_t ipb);
 599 int ioinst_handle_tpi(S390CPU *cpu, uint32_t ipb);
 600 void ioinst_handle_schm(S390CPU *cpu, uint64_t reg1, uint64_t reg2,
 601                         uint32_t ipb);
 602 void ioinst_handle_rsch(S390CPU *cpu, uint64_t reg1);
 603 void ioinst_handle_rchp(S390CPU *cpu, uint64_t reg1);
 604 void ioinst_handle_sal(S390CPU *cpu, uint64_t reg1);
 605
 606 /* service interrupts are floating therefore we must not pass an cpustate */
 607 void s390_sclp_extint(uint32_t parm);
 608
 609 #else
 610 static inline unsigned int s390_cpu_halt(S390CPU *cpu)
 611 {
 612     return 0;
 613 }
 614
 615 static inline void s390_cpu_unhalt(S390CPU *cpu)
 616 {
 617 }
 618
 619 static inline unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
 620 {
 621     return 0;
 622 }
 623 #endif
 624 void cpu_lock(void);
 625 void cpu_unlock(void);
 626
 627 extern void subsystem_reset(void);
 628
 629 #define cpu_init(model) CPU(cpu_s390x_init(model))
 630 #define cpu_exec cpu_s390x_exec
 631 #define cpu_signal_handler cpu_s390x_signal_handler
 632
 633 void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 634 #define cpu_list s390_cpu_list
 635
 636 #define EXCP_EXT 1 /* external interrupt */
 637 #define EXCP_SVC 2 /* supervisor call (syscall) */
 638 #define EXCP_PGM 3 /* program interruption */
 639 #define EXCP_IO  7 /* I/O interrupt */
 640 #define EXCP_MCHK 8 /* machine check */
 641
 642 #define INTERRUPT_EXT        (1 << 0)
 643 #define INTERRUPT_TOD        (1 << 1)
 644 #define INTERRUPT_CPUTIMER   (1 << 2)
 645 #define INTERRUPT_IO         (1 << 3)
 646 #define INTERRUPT_MCHK       (1 << 4)
 647
 648 /* Program Status Word.  */
 649 #define S390_PSWM_REGNUM 0
 650 #define S390_PSWA_REGNUM 1
 651 /* General Purpose Registers.  */
 652 #define S390_R0_REGNUM 2
 653 #define S390_R1_REGNUM 3
 654 #define S390_R2_REGNUM 4
 655 #define S390_R3_REGNUM 5
 656 #define S390_R4_REGNUM 6
 657 #define S390_R5_REGNUM 7
 658 #define S390_R6_REGNUM 8
 659 #define S390_R7_REGNUM 9
 660 #define S390_R8_REGNUM 10
 661 #define S390_R9_REGNUM 11
 662 #define S390_R10_REGNUM 12
 663 #define S390_R11_REGNUM 13
 664 #define S390_R12_REGNUM 14
 665 #define S390_R13_REGNUM 15
 666 #define S390_R14_REGNUM 16
 667 #define S390_R15_REGNUM 17
 668 /* Total Core Registers. */
 669 #define S390_NUM_CORE_REGS 18
 670
 671 /* CC optimization */
 672
 673 enum cc_op {
 674     CC_OP_CONST0 = 0,           /* CC is 0 */
 675     CC_OP_CONST1,               /* CC is 1 */
 676     CC_OP_CONST2,               /* CC is 2 */
 677     CC_OP_CONST3,               /* CC is 3 */
 678
 679     CC_OP_DYNAMIC,              /* CC calculation defined by env->cc_op */
 680     CC_OP_STATIC,               /* CC value is env->cc_op */
 681
 682     CC_OP_NZ,                   /* env->cc_dst != 0 */
 683     CC_OP_LTGT_32,              /* signed less/greater than (32bit) */
 684     CC_OP_LTGT_64,              /* signed less/greater than (64bit) */
 685     CC_OP_LTUGTU_32,            /* unsigned less/greater than (32bit) */
 686     CC_OP_LTUGTU_64,            /* unsigned less/greater than (64bit) */
 687     CC_OP_LTGT0_32,             /* signed less/greater than 0 (32bit) */
 688     CC_OP_LTGT0_64,             /* signed less/greater than 0 (64bit) */
 689
 690     CC_OP_ADD_64,               /* overflow on add (64bit) */
 691     CC_OP_ADDU_64,              /* overflow on unsigned add (64bit) */
 692     CC_OP_ADDC_64,              /* overflow on unsigned add-carry (64bit) */
 693     CC_OP_SUB_64,               /* overflow on subtraction (64bit) */
 694     CC_OP_SUBU_64,              /* overflow on unsigned subtraction (64bit) */
 695     CC_OP_SUBB_64,              /* overflow on unsigned sub-borrow (64bit) */
 696     CC_OP_ABS_64,               /* sign eval on abs (64bit) */
 697     CC_OP_NABS_64,              /* sign eval on nabs (64bit) */
 698
 699     CC_OP_ADD_32,               /* overflow on add (32bit) */
 700     CC_OP_ADDU_32,              /* overflow on unsigned add (32bit) */
 701     CC_OP_ADDC_32,              /* overflow on unsigned add-carry (32bit) */
 702     CC_OP_SUB_32,               /* overflow on subtraction (32bit) */
 703     CC_OP_SUBU_32,              /* overflow on unsigned subtraction (32bit) */
 704     CC_OP_SUBB_32,              /* overflow on unsigned sub-borrow (32bit) */
 705     CC_OP_ABS_32,               /* sign eval on abs (64bit) */
 706     CC_OP_NABS_32,              /* sign eval on nabs (64bit) */
 707
 708     CC_OP_COMP_32,              /* complement */
 709     CC_OP_COMP_64,              /* complement */
 710
 711     CC_OP_TM_32,                /* test under mask (32bit) */
 712     CC_OP_TM_64,                /* test under mask (64bit) */
 713
 714     CC_OP_NZ_F32,               /* FP dst != 0 (32bit) */
 715     CC_OP_NZ_F64,               /* FP dst != 0 (64bit) */
 716     CC_OP_NZ_F128,              /* FP dst != 0 (128bit) */
 717
 718     CC_OP_ICM,                  /* insert characters under mask */
 719     CC_OP_SLA_32,               /* Calculate shift left signed (32bit) */
 720     CC_OP_SLA_64,               /* Calculate shift left signed (64bit) */
 721     CC_OP_FLOGR,                /* find leftmost one */
 722     CC_OP_MAX
 723 };
 724
 725 static const char *cc_names[] = {
 726     [CC_OP_CONST0]    = "CC_OP_CONST0",
 727     [CC_OP_CONST1]    = "CC_OP_CONST1",
 728     [CC_OP_CONST2]    = "CC_OP_CONST2",
 729     [CC_OP_CONST3]    = "CC_OP_CONST3",
 730     [CC_OP_DYNAMIC]   = "CC_OP_DYNAMIC",
 731     [CC_OP_STATIC]    = "CC_OP_STATIC",
 732     [CC_OP_NZ]        = "CC_OP_NZ",
 733     [CC_OP_LTGT_32]   = "CC_OP_LTGT_32",
 734     [CC_OP_LTGT_64]   = "CC_OP_LTGT_64",
 735     [CC_OP_LTUGTU_32] = "CC_OP_LTUGTU_32",
 736     [CC_OP_LTUGTU_64] = "CC_OP_LTUGTU_64",
 737     [CC_OP_LTGT0_32]  = "CC_OP_LTGT0_32",
 738     [CC_OP_LTGT0_64]  = "CC_OP_LTGT0_64",
 739     [CC_OP_ADD_64]    = "CC_OP_ADD_64",
 740     [CC_OP_ADDU_64]   = "CC_OP_ADDU_64",
 741     [CC_OP_ADDC_64]   = "CC_OP_ADDC_64",
 742     [CC_OP_SUB_64]    = "CC_OP_SUB_64",
 743     [CC_OP_SUBU_64]   = "CC_OP_SUBU_64",
 744     [CC_OP_SUBB_64]   = "CC_OP_SUBB_64",
 745     [CC_OP_ABS_64]    = "CC_OP_ABS_64",
 746     [CC_OP_NABS_64]   = "CC_OP_NABS_64",
 747     [CC_OP_ADD_32]    = "CC_OP_ADD_32",
 748     [CC_OP_ADDU_32]   = "CC_OP_ADDU_32",
 749     [CC_OP_ADDC_32]   = "CC_OP_ADDC_32",
 750     [CC_OP_SUB_32]    = "CC_OP_SUB_32",
 751     [CC_OP_SUBU_32]   = "CC_OP_SUBU_32",
 752     [CC_OP_SUBB_32]   = "CC_OP_SUBB_32",
 753     [CC_OP_ABS_32]    = "CC_OP_ABS_32",
 754     [CC_OP_NABS_32]   = "CC_OP_NABS_32",
 755     [CC_OP_COMP_32]   = "CC_OP_COMP_32",
 756     [CC_OP_COMP_64]   = "CC_OP_COMP_64",
 757     [CC_OP_TM_32]     = "CC_OP_TM_32",
 758     [CC_OP_TM_64]     = "CC_OP_TM_64",
 759     [CC_OP_NZ_F32]    = "CC_OP_NZ_F32",
 760     [CC_OP_NZ_F64]    = "CC_OP_NZ_F64",
 761     [CC_OP_NZ_F128]   = "CC_OP_NZ_F128",
 762     [CC_OP_ICM]       = "CC_OP_ICM",
 763     [CC_OP_SLA_32]    = "CC_OP_SLA_32",
 764     [CC_OP_SLA_64]    = "CC_OP_SLA_64",
 765     [CC_OP_FLOGR]     = "CC_OP_FLOGR",
 766 };
 767
 768 static inline const char *cc_name(int cc_op)
 769 {
 770     return cc_names[cc_op];
 771 }
 772
 773 static inline void setcc(S390CPU *cpu, uint64_t cc)
 774 {
 775     CPUS390XState *env = &cpu->env;
 776
 777     env->psw.mask &= ~(3ull << 44);
 778     env->psw.mask |= (cc & 3) << 44;
 779     env->cc_op = cc;
 780 }
 781
 782 typedef struct LowCore
 783 {
 784     /* prefix area: defined by architecture */
 785     uint32_t        ccw1[2];                  /* 0x000 */
 786     uint32_t        ccw2[4];                  /* 0x008 */
 787     uint8_t         pad1[0x80-0x18];          /* 0x018 */
 788     uint32_t        ext_params;               /* 0x080 */
 789     uint16_t        cpu_addr;                 /* 0x084 */
 790     uint16_t        ext_int_code;             /* 0x086 */
 791     uint16_t        svc_ilen;                 /* 0x088 */
 792     uint16_t        svc_code;                 /* 0x08a */
 793     uint16_t        pgm_ilen;                 /* 0x08c */
 794     uint16_t        pgm_code;                 /* 0x08e */
 795     uint32_t        data_exc_code;            /* 0x090 */
 796     uint16_t        mon_class_num;            /* 0x094 */
 797     uint16_t        per_perc_atmid;           /* 0x096 */
 798     uint64_t        per_address;              /* 0x098 */
 799     uint8_t         exc_access_id;            /* 0x0a0 */
 800     uint8_t         per_access_id;            /* 0x0a1 */
 801     uint8_t         op_access_id;             /* 0x0a2 */
 802     uint8_t         ar_access_id;             /* 0x0a3 */
 803     uint8_t         pad2[0xA8-0xA4];          /* 0x0a4 */
 804     uint64_t        trans_exc_code;           /* 0x0a8 */
 805     uint64_t        monitor_code;             /* 0x0b0 */
 806     uint16_t        subchannel_id;            /* 0x0b8 */
 807     uint16_t        subchannel_nr;            /* 0x0ba */
 808     uint32_t        io_int_parm;              /* 0x0bc */
 809     uint32_t        io_int_word;              /* 0x0c0 */
 810     uint8_t         pad3[0xc8-0xc4];          /* 0x0c4 */
 811     uint32_t        stfl_fac_list;            /* 0x0c8 */
 812     uint8_t         pad4[0xe8-0xcc];          /* 0x0cc */
 813     uint32_t        mcck_interruption_code[2]; /* 0x0e8 */
 814     uint8_t         pad5[0xf4-0xf0];          /* 0x0f0 */
 815     uint32_t        external_damage_code;     /* 0x0f4 */
 816     uint64_t        failing_storage_address;  /* 0x0f8 */
 817     uint8_t         pad6[0x110-0x100];        /* 0x100 */
 818     uint64_t        per_breaking_event_addr;  /* 0x110 */
 819     uint8_t         pad7[0x120-0x118];        /* 0x118 */
 820     PSW             restart_old_psw;          /* 0x120 */
 821     PSW             external_old_psw;         /* 0x130 */
 822     PSW             svc_old_psw;              /* 0x140 */
 823     PSW             program_old_psw;          /* 0x150 */
 824     PSW             mcck_old_psw;             /* 0x160 */
 825     PSW             io_old_psw;               /* 0x170 */
 826     uint8_t         pad8[0x1a0-0x180];        /* 0x180 */
 827     PSW             restart_new_psw;          /* 0x1a0 */
 828     PSW             external_new_psw;         /* 0x1b0 */
 829     PSW             svc_new_psw;              /* 0x1c0 */
 830     PSW             program_new_psw;          /* 0x1d0 */
 831     PSW             mcck_new_psw;             /* 0x1e0 */
 832     PSW             io_new_psw;               /* 0x1f0 */
 833     PSW             return_psw;               /* 0x200 */
 834     uint8_t         irb[64];                  /* 0x210 */
 835     uint64_t        sync_enter_timer;         /* 0x250 */
 836     uint64_t        async_enter_timer;        /* 0x258 */
 837     uint64_t        exit_timer;               /* 0x260 */
 838     uint64_t        last_update_timer;        /* 0x268 */
 839     uint64_t        user_timer;               /* 0x270 */
 840     uint64_t        system_timer;             /* 0x278 */
 841     uint64_t        last_update_clock;        /* 0x280 */
 842     uint64_t        steal_clock;              /* 0x288 */
 843     PSW             return_mcck_psw;          /* 0x290 */
 844     uint8_t         pad9[0xc00-0x2a0];        /* 0x2a0 */
 845     /* System info area */
 846     uint64_t        save_area[16];            /* 0xc00 */
 847     uint8_t         pad10[0xd40-0xc80];       /* 0xc80 */
 848     uint64_t        kernel_stack;             /* 0xd40 */
 849     uint64_t        thread_info;              /* 0xd48 */
 850     uint64_t        async_stack;              /* 0xd50 */
 851     uint64_t        kernel_asce;              /* 0xd58 */
 852     uint64_t        user_asce;                /* 0xd60 */
 853     uint64_t        panic_stack;              /* 0xd68 */
 854     uint64_t        user_exec_asce;           /* 0xd70 */
 855     uint8_t         pad11[0xdc0-0xd78];       /* 0xd78 */
 856
 857     /* SMP info area: defined by DJB */
 858     uint64_t        clock_comparator;         /* 0xdc0 */
 859     uint64_t        ext_call_fast;            /* 0xdc8 */
 860     uint64_t        percpu_offset;            /* 0xdd0 */
 861     uint64_t        current_task;             /* 0xdd8 */
 862     uint32_t        softirq_pending;          /* 0xde0 */
 863     uint32_t        pad_0x0de4;               /* 0xde4 */
 864     uint64_t        int_clock;                /* 0xde8 */
 865     uint8_t         pad12[0xe00-0xdf0];       /* 0xdf0 */
 866
 867     /* 0xe00 is used as indicator for dump tools */
 868     /* whether the kernel died with panic() or not */
 869     uint32_t        panic_magic;              /* 0xe00 */
 870
 871     uint8_t         pad13[0x11b8-0xe04];      /* 0xe04 */
 872
 873     /* 64 bit extparam used for pfault, diag 250 etc  */
 874     uint64_t        ext_params2;               /* 0x11B8 */
 875
 876     uint8_t         pad14[0x1200-0x11C0];      /* 0x11C0 */
 877
 878     /* System info area */
 879
 880     uint64_t        floating_pt_save_area[16]; /* 0x1200 */
 881     uint64_t        gpregs_save_area[16];      /* 0x1280 */
 882     uint32_t        st_status_fixed_logout[4]; /* 0x1300 */
 883     uint8_t         pad15[0x1318-0x1310];      /* 0x1310 */
 884     uint32_t        prefixreg_save_area;       /* 0x1318 */
 885     uint32_t        fpt_creg_save_area;        /* 0x131c */
 886     uint8_t         pad16[0x1324-0x1320];      /* 0x1320 */
 887     uint32_t        tod_progreg_save_area;     /* 0x1324 */
 888     uint32_t        cpu_timer_save_area[2];    /* 0x1328 */
 889     uint32_t        clock_comp_save_area[2];   /* 0x1330 */
 890     uint8_t         pad17[0x1340-0x1338];      /* 0x1338 */
 891     uint32_t        access_regs_save_area[16]; /* 0x1340 */
 892     uint64_t        cregs_save_area[16];       /* 0x1380 */
 893
 894     /* align to the top of the prefix area */
 895
 896     uint8_t         pad18[0x2000-0x1400];      /* 0x1400 */
 897 } QEMU_PACKED LowCore;
 898
 899 /* STSI */
 900 #define STSI_LEVEL_MASK         0x00000000f0000000ULL
 901 #define STSI_LEVEL_CURRENT      0x0000000000000000ULL
 902 #define STSI_LEVEL_1            0x0000000010000000ULL
 903 #define STSI_LEVEL_2            0x0000000020000000ULL
 904 #define STSI_LEVEL_3            0x0000000030000000ULL
 905 #define STSI_R0_RESERVED_MASK   0x000000000fffff00ULL
 906 #define STSI_R0_SEL1_MASK       0x00000000000000ffULL
 907 #define STSI_R1_RESERVED_MASK   0x00000000ffff0000ULL
 908 #define STSI_R1_SEL2_MASK       0x000000000000ffffULL
 909
 910 /* Basic Machine Configuration */
 911 struct sysib_111 {
 912     uint32_t res1[8];
 913     uint8_t  manuf[16];
 914     uint8_t  type[4];
 915     uint8_t  res2[12];
 916     uint8_t  model[16];
 917     uint8_t  sequence[16];
 918     uint8_t  plant[4];
 919     uint8_t  res3[156];
 920 };
 921
 922 /* Basic Machine CPU */
 923 struct sysib_121 {
 924     uint32_t res1[80];
 925     uint8_t  sequence[16];
 926     uint8_t  plant[4];
 927     uint8_t  res2[2];
 928     uint16_t cpu_addr;
 929     uint8_t  res3[152];
 930 };
 931
 932 /* Basic Machine CPUs */
 933 struct sysib_122 {
 934     uint8_t res1[32];
 935     uint32_t capability;
 936     uint16_t total_cpus;
 937     uint16_t active_cpus;
 938     uint16_t standby_cpus;
 939     uint16_t reserved_cpus;
 940     uint16_t adjustments[2026];
 941 };
 942
 943 /* LPAR CPU */
 944 struct sysib_221 {
 945     uint32_t res1[80];
 946     uint8_t  sequence[16];
 947     uint8_t  plant[4];
 948     uint16_t cpu_id;
 949     uint16_t cpu_addr;
 950     uint8_t  res3[152];
 951 };
 952
 953 /* LPAR CPUs */
 954 struct sysib_222 {
 955     uint32_t res1[32];
 956     uint16_t lpar_num;
 957     uint8_t  res2;
 958     uint8_t  lcpuc;
 959     uint16_t total_cpus;
 960     uint16_t conf_cpus;
 961     uint16_t standby_cpus;
 962     uint16_t reserved_cpus;
 963     uint8_t  name[8];
 964     uint32_t caf;
 965     uint8_t  res3[16];
 966     uint16_t dedicated_cpus;
 967     uint16_t shared_cpus;
 968     uint8_t  res4[180];
 969 };
 970
 971 /* VM CPUs */
 972 struct sysib_322 {
 973     uint8_t  res1[31];
 974     uint8_t  count;
 975     struct {
 976         uint8_t  res2[4];
 977         uint16_t total_cpus;
 978         uint16_t conf_cpus;
 979         uint16_t standby_cpus;
 980         uint16_t reserved_cpus;
 981         uint8_t  name[8];
 982         uint32_t caf;
 983         uint8_t  cpi[16];
 984         uint8_t res5[3];
 985         uint8_t ext_name_encoding;
 986         uint32_t res3;
 987         uint8_t uuid[16];
 988     } vm[8];
 989     uint8_t res4[1504];
 990     uint8_t ext_names[8][256];
 991 };
 992
 993 /* MMU defines */
 994 #define _ASCE_ORIGIN            ~0xfffULL /* segment table origin             */
 995 #define _ASCE_SUBSPACE          0x200     /* subspace group control           */
 996 #define _ASCE_PRIVATE_SPACE     0x100     /* private space control            */
 997 #define _ASCE_ALT_EVENT         0x80      /* storage alteration event control */
 998 #define _ASCE_SPACE_SWITCH      0x40      /* space switch event               */
 999 #define _ASCE_REAL_SPACE        0x20      /* real space control               */
1000 #define _ASCE_TYPE_MASK         0x0c      /* asce table type mask             */
1001 #define _ASCE_TYPE_REGION1      0x0c      /* region first table type          */
1002 #define _ASCE_TYPE_REGION2      0x08      /* region second table type         */
1003 #define _ASCE_TYPE_REGION3      0x04      /* region third table type          */
1004 #define _ASCE_TYPE_SEGMENT      0x00      /* segment table type               */
1005 #define _ASCE_TABLE_LENGTH      0x03      /* region table length              */
1006
1007 #define _REGION_ENTRY_ORIGIN    ~0xfffULL /* region/segment table origin      */
1008 #define _REGION_ENTRY_RO        0x200     /* region/segment protection bit    */
1009 #define _REGION_ENTRY_TF        0xc0      /* region/segment table offset      */
1010 #define _REGION_ENTRY_INV       0x20      /* invalid region table entry       */
1011 #define _REGION_ENTRY_TYPE_MASK 0x0c      /* region/segment table type mask   */
1012 #define _REGION_ENTRY_TYPE_R1   0x0c      /* region first table type          */
1013 #define _REGION_ENTRY_TYPE_R2   0x08      /* region second table type         */
1014 #define _REGION_ENTRY_TYPE_R3   0x04      /* region third table type          */
1015 #define _REGION_ENTRY_LENGTH    0x03      /* region third length              */
1016
1017 #define _SEGMENT_ENTRY_ORIGIN   ~0x7ffULL /* segment table origin             */
1018 #define _SEGMENT_ENTRY_FC       0x400     /* format control                   */
1019 #define _SEGMENT_ENTRY_RO       0x200     /* page protection bit              */
1020 #define _SEGMENT_ENTRY_INV      0x20      /* invalid segment table entry      */
1021
1022 #define _PAGE_RO        0x200            /* HW read-only bit  */
1023 #define _PAGE_INVALID   0x400            /* HW invalid bit    */
1024 #define _PAGE_RES0      0x800            /* bit must be zero  */
1025
1026 #define SK_C                    (0x1 << 1)
1027 #define SK_R                    (0x1 << 2)
1028 #define SK_F                    (0x1 << 3)
1029 #define SK_ACC_MASK             (0xf << 4)
1030
1031 /* SIGP order codes */
1032 #define SIGP_SENSE             0x01
1033 #define SIGP_EXTERNAL_CALL     0x02
1034 #define SIGP_EMERGENCY         0x03
1035 #define SIGP_START             0x04
1036 #define SIGP_STOP              0x05
1037 #define SIGP_RESTART           0x06
1038 #define SIGP_STOP_STORE_STATUS 0x09
1039 #define SIGP_INITIAL_CPU_RESET 0x0b
1040 #define SIGP_CPU_RESET         0x0c
1041 #define SIGP_SET_PREFIX        0x0d
1042 #define SIGP_STORE_STATUS_ADDR 0x0e
1043 #define SIGP_SET_ARCH          0x12
1044 #define SIGP_STORE_ADTL_STATUS 0x17
1045
1046 /* SIGP condition codes */
1047 #define SIGP_CC_ORDER_CODE_ACCEPTED 0
1048 #define SIGP_CC_STATUS_STORED       1
1049 #define SIGP_CC_BUSY                2
1050 #define SIGP_CC_NOT_OPERATIONAL     3
1051
1052 /* SIGP status bits */
1053 #define SIGP_STAT_EQUIPMENT_CHECK   0x80000000UL
1054 #define SIGP_STAT_INCORRECT_STATE   0x00000200UL
1055 #define SIGP_STAT_INVALID_PARAMETER 0x00000100UL
1056 #define SIGP_STAT_EXT_CALL_PENDING  0x00000080UL
1057 #define SIGP_STAT_STOPPED           0x00000040UL
1058 #define SIGP_STAT_OPERATOR_INTERV   0x00000020UL
1059 #define SIGP_STAT_CHECK_STOP        0x00000010UL
1060 #define SIGP_STAT_INOPERATIVE       0x00000004UL
1061 #define SIGP_STAT_INVALID_ORDER     0x00000002UL
1062 #define SIGP_STAT_RECEIVER_CHECK    0x00000001UL
1063
1064 /* SIGP SET ARCHITECTURE modes */
1065 #define SIGP_MODE_ESA_S390 0
1066 #define SIGP_MODE_Z_ARCH_TRANS_ALL_PSW 1
1067 #define SIGP_MODE_Z_ARCH_TRANS_CUR_PSW 2
1068
1069 void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr);
1070 int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc,
1071                   target_ulong *raddr, int *flags, bool exc);
1072 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code);
1073 uint32_t calc_cc(CPUS390XState *env, uint32_t cc_op, uint64_t src, uint64_t dst,
1074                  uint64_t vr);
1075 void s390_cpu_recompute_watchpoints(CPUState *cs);
1076
1077 int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
1078                          int len, bool is_write);
1079
1080 #define s390_cpu_virt_mem_read(cpu, laddr, ar, dest, len)    \
1081         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, false)
1082 #define s390_cpu_virt_mem_write(cpu, laddr, ar, dest, len)       \
1083         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, true)
1084 #define s390_cpu_virt_mem_check_write(cpu, laddr, ar, len)   \
1085         s390_cpu_virt_mem_rw(cpu, laddr, ar, NULL, len, true)
1086
1087 /* The value of the TOD clock for 1.1.1970. */
1088 #define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
1089
1090 /* Converts ns to s390's clock format */
1091 static inline uint64_t time2tod(uint64_t ns) {
1092     return (ns << 9) / 125;
1093 }
1094
1095 /* Converts s390's clock format to ns */
1096 static inline uint64_t tod2time(uint64_t t) {
1097     return (t * 125) >> 9;
1098 }
1099
1100 /* from s390-virtio-ccw */
1101 #define MEM_SECTION_SIZE             0x10000000UL
1102 #define MAX_AVAIL_SLOTS              32
1103
1104 /* fpu_helper.c */
1105 uint32_t set_cc_nz_f32(float32 v);
1106 uint32_t set_cc_nz_f64(float64 v);
1107 uint32_t set_cc_nz_f128(float128 v);
1108
1109 /* misc_helper.c */
1110 #ifndef CONFIG_USER_ONLY
1111 int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3);
1112 void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3);
1113 #endif
1114 void program_interrupt(CPUS390XState *env, uint32_t code, int ilen);
1115 void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp,
1116                                      uintptr_t retaddr);
1117
1118 #ifdef CONFIG_KVM
1119 void kvm_s390_io_interrupt(uint16_t subchannel_id,
1120                            uint16_t subchannel_nr, uint32_t io_int_parm,
1121                            uint32_t io_int_word);
1122 void kvm_s390_crw_mchk(void);
1123 void kvm_s390_enable_css_support(S390CPU *cpu);
1124 int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
1125                                     int vq, bool assign);
1126 int kvm_s390_cpu_restart(S390CPU *cpu);
1127 int kvm_s390_get_memslot_count(KVMState *s);
1128 void kvm_s390_cmma_reset(void);
1129 int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state);
1130 void kvm_s390_reset_vcpu(S390CPU *cpu);
1131 int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit, uint64_t *hw_limit);
1132 void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu);
1133 int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu);
1134 int kvm_s390_get_ri(void);
1135 void kvm_s390_crypto_reset(void);
1136 #else
1137 static inline void kvm_s390_io_interrupt(uint16_t subchannel_id,
1138                                         uint16_t subchannel_nr,
1139                                         uint32_t io_int_parm,
1140                                         uint32_t io_int_word)
1141 {
1142 }
1143 static inline void kvm_s390_crw_mchk(void)
1144 {
1145 }
1146 static inline void kvm_s390_enable_css_support(S390CPU *cpu)
1147 {
1148 }
1149 static inline int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier,
1150                                                   uint32_t sch, int vq,
1151                                                   bool assign)
1152 {
1153     return -ENOSYS;
1154 }
1155 static inline int kvm_s390_cpu_restart(S390CPU *cpu)
1156 {
1157     return -ENOSYS;
1158 }
1159 static inline void kvm_s390_cmma_reset(void)
1160 {
1161 }
1162 static inline int kvm_s390_get_memslot_count(KVMState *s)
1163 {
1164   return MAX_AVAIL_SLOTS;
1165 }
1166 static inline int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
1167 {
1168     return -ENOSYS;
1169 }
1170 static inline void kvm_s390_reset_vcpu(S390CPU *cpu)
1171 {
1172 }
1173 static inline int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit,
1174                                          uint64_t *hw_limit)
1175 {
1176     return 0;
1177 }
1178 static inline void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
1179 {
1180 }
1181 static inline int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
1182 {
1183     return 0;
1184 }
1185 static inline int kvm_s390_get_ri(void)
1186 {
1187     return 0;
1188 }
1189 static inline void kvm_s390_crypto_reset(void)
1190 {
1191 }
1192 #endif
1193
1194 static inline int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit)
1195 {
1196     if (kvm_enabled()) {
1197         return kvm_s390_set_mem_limit(kvm_state, new_limit, hw_limit);
1198     }
1199     return 0;
1200 }
1201
1202 static inline void s390_cmma_reset(void)
1203 {
1204     if (kvm_enabled()) {
1205         kvm_s390_cmma_reset();
1206     }
1207 }
1208
1209 static inline int s390_cpu_restart(S390CPU *cpu)
1210 {
1211     if (kvm_enabled()) {
1212         return kvm_s390_cpu_restart(cpu);
1213     }
1214     return -ENOSYS;
1215 }
1216
1217 static inline int s390_get_memslot_count(KVMState *s)
1218 {
1219     if (kvm_enabled()) {
1220         return kvm_s390_get_memslot_count(s);
1221     } else {
1222         return MAX_AVAIL_SLOTS;
1223     }
1224 }
1225
1226 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
1227                        uint32_t io_int_parm, uint32_t io_int_word);
1228 void s390_crw_mchk(void);
1229
1230 static inline int s390_assign_subch_ioeventfd(EventNotifier *notifier,
1231                                               uint32_t sch_id, int vq,
1232                                               bool assign)
1233 {
1234     return kvm_s390_assign_subch_ioeventfd(notifier, sch_id, vq, assign);
1235 }
1236
1237 static inline void s390_crypto_reset(void)
1238 {
1239     if (kvm_enabled()) {
1240         kvm_s390_crypto_reset();
1241     }
1242 }
1243
1244 /* machine check interruption code */
1245
1246 /* subclasses */
1247 #define MCIC_SC_SD 0x8000000000000000ULL
1248 #define MCIC_SC_PD 0x4000000000000000ULL
1249 #define MCIC_SC_SR 0x2000000000000000ULL
1250 #define MCIC_SC_CD 0x0800000000000000ULL
1251 #define MCIC_SC_ED 0x0400000000000000ULL
1252 #define MCIC_SC_DG 0x0100000000000000ULL
1253 #define MCIC_SC_W  0x0080000000000000ULL
1254 #define MCIC_SC_CP 0x0040000000000000ULL
1255 #define MCIC_SC_SP 0x0020000000000000ULL
1256 #define MCIC_SC_CK 0x0010000000000000ULL
1257
1258 /* subclass modifiers */
1259 #define MCIC_SCM_B  0x0002000000000000ULL
1260 #define MCIC_SCM_DA 0x0000000020000000ULL
1261 #define MCIC_SCM_AP 0x0000000000080000ULL
1262
1263 /* storage errors */
1264 #define MCIC_SE_SE 0x0000800000000000ULL
1265 #define MCIC_SE_SC 0x0000400000000000ULL
1266 #define MCIC_SE_KE 0x0000200000000000ULL
1267 #define MCIC_SE_DS 0x0000100000000000ULL
1268 #define MCIC_SE_IE 0x0000000080000000ULL
1269
1270 /* validity bits */
1271 #define MCIC_VB_WP 0x0000080000000000ULL
1272 #define MCIC_VB_MS 0x0000040000000000ULL
1273 #define MCIC_VB_PM 0x0000020000000000ULL
1274 #define MCIC_VB_IA 0x0000010000000000ULL
1275 #define MCIC_VB_FA 0x0000008000000000ULL
1276 #define MCIC_VB_VR 0x0000004000000000ULL
1277 #define MCIC_VB_EC 0x0000002000000000ULL
1278 #define MCIC_VB_FP 0x0000001000000000ULL
1279 #define MCIC_VB_GR 0x0000000800000000ULL
1280 #define MCIC_VB_CR 0x0000000400000000ULL
1281 #define MCIC_VB_ST 0x0000000100000000ULL
1282 #define MCIC_VB_AR 0x0000000040000000ULL
1283 #define MCIC_VB_PR 0x0000000000200000ULL
1284 #define MCIC_VB_FC 0x0000000000100000ULL
1285 #define MCIC_VB_CT 0x0000000000020000ULL
1286 #define MCIC_VB_CC 0x0000000000010000ULL
1287
1288 #endif