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
  92     uint32_t fpc;          /* floating-point control register */
  93     uint32_t cc_op;
  94
  95     float_status fpu_status; /* passed to softfloat lib */
  96
  97     /* The low part of a 128-bit return, or remainder of a divide.  */
  98     uint64_t retxl;
  99
 100     PSW psw;
 101
 102     uint64_t cc_src;
 103     uint64_t cc_dst;
 104     uint64_t cc_vr;
 105
 106     uint64_t __excp_addr;
 107     uint64_t psa;
 108
 109     uint32_t int_pgm_code;
 110     uint32_t int_pgm_ilen;
 111
 112     uint32_t int_svc_code;
 113     uint32_t int_svc_ilen;
 114
 115     uint64_t per_address;
 116     uint16_t per_perc_atmid;
 117
 118     uint64_t cregs[16]; /* control registers */
 119
 120     ExtQueue ext_queue[MAX_EXT_QUEUE];
 121     IOIntQueue io_queue[MAX_IO_QUEUE][8];
 122     MchkQueue mchk_queue[MAX_MCHK_QUEUE];
 123
 124     int pending_int;
 125     int ext_index;
 126     int io_index[8];
 127     int mchk_index;
 128
 129     uint64_t ckc;
 130     uint64_t cputm;
 131     uint32_t todpr;
 132
 133     uint64_t pfault_token;
 134     uint64_t pfault_compare;
 135     uint64_t pfault_select;
 136
 137     uint64_t gbea;
 138     uint64_t pp;
 139
 140     uint8_t riccb[64];
 141
 142     CPU_COMMON
 143
 144     /* reset does memset(0) up to here */
 145
 146     uint32_t cpu_num;
 147     uint32_t machine_type;
 148
 149     uint64_t tod_offset;
 150     uint64_t tod_basetime;
 151     QEMUTimer *tod_timer;
 152
 153     QEMUTimer *cpu_timer;
 154
 155     /*
 156      * The cpu state represents the logical state of a cpu. In contrast to other
 157      * architectures, there is a difference between a halt and a stop on s390.
 158      * If all cpus are either stopped (including check stop) or in the disabled
 159      * wait state, the vm can be shut down.
 160      */
 161 #define CPU_STATE_UNINITIALIZED        0x00
 162 #define CPU_STATE_STOPPED              0x01
 163 #define CPU_STATE_CHECK_STOP           0x02
 164 #define CPU_STATE_OPERATING            0x03
 165 #define CPU_STATE_LOAD                 0x04
 166     uint8_t cpu_state;
 167
 168     /* currently processed sigp order */
 169     uint8_t sigp_order;
 170
 171 } CPUS390XState;
 172
 173 static inline CPU_DoubleU *get_freg(CPUS390XState *cs, int nr)
 174 {
 175     return &cs->vregs[nr][0];
 176 }
 177
 178 /**
 179  * S390CPU:
 180  * @env: #CPUS390XState.
 181  *
 182  * An S/390 CPU.
 183  */
 184 struct S390CPU {
 185     /*< private >*/
 186     CPUState parent_obj;
 187     /*< public >*/
 188
 189     CPUS390XState env;
 190     int64_t id;
 191     S390CPUModel *model;
 192     /* needed for live migration */
 193     void *irqstate;
 194     uint32_t irqstate_saved_size;
 195 };
 196
 197 static inline S390CPU *s390_env_get_cpu(CPUS390XState *env)
 198 {
 199     return container_of(env, S390CPU, env);
 200 }
 201
 202 #define ENV_GET_CPU(e) CPU(s390_env_get_cpu(e))
 203
 204 #define ENV_OFFSET offsetof(S390CPU, env)
 205
 206 #ifndef CONFIG_USER_ONLY
 207 extern const struct VMStateDescription vmstate_s390_cpu;
 208 #endif
 209
 210 void s390_cpu_do_interrupt(CPUState *cpu);
 211 bool s390_cpu_exec_interrupt(CPUState *cpu, int int_req);
 212 void s390_cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
 213                          int flags);
 214 int s390_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
 215                               int cpuid, void *opaque);
 216
 217 hwaddr s390_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
 218 hwaddr s390_cpu_get_phys_addr_debug(CPUState *cpu, vaddr addr);
 219 int s390_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
 220 int s390_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
 221 void s390_cpu_gdb_init(CPUState *cs);
 222 void s390x_cpu_debug_excp_handler(CPUState *cs);
 223
 224 #include "sysemu/kvm.h"
 225
 226 /* distinguish between 24 bit and 31 bit addressing */
 227 #define HIGH_ORDER_BIT 0x80000000
 228
 229 /* Interrupt Codes */
 230 /* Program Interrupts */
 231 #define PGM_OPERATION                   0x0001
 232 #define PGM_PRIVILEGED                  0x0002
 233 #define PGM_EXECUTE                     0x0003
 234 #define PGM_PROTECTION                  0x0004
 235 #define PGM_ADDRESSING                  0x0005
 236 #define PGM_SPECIFICATION               0x0006
 237 #define PGM_DATA                        0x0007
 238 #define PGM_FIXPT_OVERFLOW              0x0008
 239 #define PGM_FIXPT_DIVIDE                0x0009
 240 #define PGM_DEC_OVERFLOW                0x000a
 241 #define PGM_DEC_DIVIDE                  0x000b
 242 #define PGM_HFP_EXP_OVERFLOW            0x000c
 243 #define PGM_HFP_EXP_UNDERFLOW           0x000d
 244 #define PGM_HFP_SIGNIFICANCE            0x000e
 245 #define PGM_HFP_DIVIDE                  0x000f
 246 #define PGM_SEGMENT_TRANS               0x0010
 247 #define PGM_PAGE_TRANS                  0x0011
 248 #define PGM_TRANS_SPEC                  0x0012
 249 #define PGM_SPECIAL_OP                  0x0013
 250 #define PGM_OPERAND                     0x0015
 251 #define PGM_TRACE_TABLE                 0x0016
 252 #define PGM_SPACE_SWITCH                0x001c
 253 #define PGM_HFP_SQRT                    0x001d
 254 #define PGM_PC_TRANS_SPEC               0x001f
 255 #define PGM_AFX_TRANS                   0x0020
 256 #define PGM_ASX_TRANS                   0x0021
 257 #define PGM_LX_TRANS                    0x0022
 258 #define PGM_EX_TRANS                    0x0023
 259 #define PGM_PRIM_AUTH                   0x0024
 260 #define PGM_SEC_AUTH                    0x0025
 261 #define PGM_ALET_SPEC                   0x0028
 262 #define PGM_ALEN_SPEC                   0x0029
 263 #define PGM_ALE_SEQ                     0x002a
 264 #define PGM_ASTE_VALID                  0x002b
 265 #define PGM_ASTE_SEQ                    0x002c
 266 #define PGM_EXT_AUTH                    0x002d
 267 #define PGM_STACK_FULL                  0x0030
 268 #define PGM_STACK_EMPTY                 0x0031
 269 #define PGM_STACK_SPEC                  0x0032
 270 #define PGM_STACK_TYPE                  0x0033
 271 #define PGM_STACK_OP                    0x0034
 272 #define PGM_ASCE_TYPE                   0x0038
 273 #define PGM_REG_FIRST_TRANS             0x0039
 274 #define PGM_REG_SEC_TRANS               0x003a
 275 #define PGM_REG_THIRD_TRANS             0x003b
 276 #define PGM_MONITOR                     0x0040
 277 #define PGM_PER                         0x0080
 278 #define PGM_CRYPTO                      0x0119
 279
 280 /* External Interrupts */
 281 #define EXT_INTERRUPT_KEY               0x0040
 282 #define EXT_CLOCK_COMP                  0x1004
 283 #define EXT_CPU_TIMER                   0x1005
 284 #define EXT_MALFUNCTION                 0x1200
 285 #define EXT_EMERGENCY                   0x1201
 286 #define EXT_EXTERNAL_CALL               0x1202
 287 #define EXT_ETR                         0x1406
 288 #define EXT_SERVICE                     0x2401
 289 #define EXT_VIRTIO                      0x2603
 290
 291 /* PSW defines */
 292 #undef PSW_MASK_PER
 293 #undef PSW_MASK_DAT
 294 #undef PSW_MASK_IO
 295 #undef PSW_MASK_EXT
 296 #undef PSW_MASK_KEY
 297 #undef PSW_SHIFT_KEY
 298 #undef PSW_MASK_MCHECK
 299 #undef PSW_MASK_WAIT
 300 #undef PSW_MASK_PSTATE
 301 #undef PSW_MASK_ASC
 302 #undef PSW_MASK_CC
 303 #undef PSW_MASK_PM
 304 #undef PSW_MASK_64
 305 #undef PSW_MASK_32
 306 #undef PSW_MASK_ESA_ADDR
 307
 308 #define PSW_MASK_PER            0x4000000000000000ULL
 309 #define PSW_MASK_DAT            0x0400000000000000ULL
 310 #define PSW_MASK_IO             0x0200000000000000ULL
 311 #define PSW_MASK_EXT            0x0100000000000000ULL
 312 #define PSW_MASK_KEY            0x00F0000000000000ULL
 313 #define PSW_SHIFT_KEY           56
 314 #define PSW_MASK_MCHECK         0x0004000000000000ULL
 315 #define PSW_MASK_WAIT           0x0002000000000000ULL
 316 #define PSW_MASK_PSTATE         0x0001000000000000ULL
 317 #define PSW_MASK_ASC            0x0000C00000000000ULL
 318 #define PSW_MASK_CC             0x0000300000000000ULL
 319 #define PSW_MASK_PM             0x00000F0000000000ULL
 320 #define PSW_MASK_64             0x0000000100000000ULL
 321 #define PSW_MASK_32             0x0000000080000000ULL
 322 #define PSW_MASK_ESA_ADDR       0x000000007fffffffULL
 323
 324 #undef PSW_ASC_PRIMARY
 325 #undef PSW_ASC_ACCREG
 326 #undef PSW_ASC_SECONDARY
 327 #undef PSW_ASC_HOME
 328
 329 #define PSW_ASC_PRIMARY         0x0000000000000000ULL
 330 #define PSW_ASC_ACCREG          0x0000400000000000ULL
 331 #define PSW_ASC_SECONDARY       0x0000800000000000ULL
 332 #define PSW_ASC_HOME            0x0000C00000000000ULL
 333
 334 /* tb flags */
 335
 336 #define FLAG_MASK_PER           (PSW_MASK_PER    >> 32)
 337 #define FLAG_MASK_DAT           (PSW_MASK_DAT    >> 32)
 338 #define FLAG_MASK_IO            (PSW_MASK_IO     >> 32)
 339 #define FLAG_MASK_EXT           (PSW_MASK_EXT    >> 32)
 340 #define FLAG_MASK_KEY           (PSW_MASK_KEY    >> 32)
 341 #define FLAG_MASK_MCHECK        (PSW_MASK_MCHECK >> 32)
 342 #define FLAG_MASK_WAIT          (PSW_MASK_WAIT   >> 32)
 343 #define FLAG_MASK_PSTATE        (PSW_MASK_PSTATE >> 32)
 344 #define FLAG_MASK_ASC           (PSW_MASK_ASC    >> 32)
 345 #define FLAG_MASK_CC            (PSW_MASK_CC     >> 32)
 346 #define FLAG_MASK_PM            (PSW_MASK_PM     >> 32)
 347 #define FLAG_MASK_64            (PSW_MASK_64     >> 32)
 348 #define FLAG_MASK_32            0x00001000
 349
 350 /* Control register 0 bits */
 351 #define CR0_LOWPROT             0x0000000010000000ULL
 352 #define CR0_EDAT                0x0000000000800000ULL
 353
 354 /* MMU */
 355 #define MMU_PRIMARY_IDX         0
 356 #define MMU_SECONDARY_IDX       1
 357 #define MMU_HOME_IDX            2
 358
 359 static inline int cpu_mmu_index (CPUS390XState *env, bool ifetch)
 360 {
 361     switch (env->psw.mask & PSW_MASK_ASC) {
 362     case PSW_ASC_PRIMARY:
 363         return MMU_PRIMARY_IDX;
 364     case PSW_ASC_SECONDARY:
 365         return MMU_SECONDARY_IDX;
 366     case PSW_ASC_HOME:
 367         return MMU_HOME_IDX;
 368     case PSW_ASC_ACCREG:
 369         /* Fallthrough: access register mode is not yet supported */
 370     default:
 371         abort();
 372     }
 373 }
 374
 375 static inline uint64_t cpu_mmu_idx_to_asc(int mmu_idx)
 376 {
 377     switch (mmu_idx) {
 378     case MMU_PRIMARY_IDX:
 379         return PSW_ASC_PRIMARY;
 380     case MMU_SECONDARY_IDX:
 381         return PSW_ASC_SECONDARY;
 382     case MMU_HOME_IDX:
 383         return PSW_ASC_HOME;
 384     default:
 385         abort();
 386     }
 387 }
 388
 389 static inline void cpu_get_tb_cpu_state(CPUS390XState* env, target_ulong *pc,
 390                                         target_ulong *cs_base, uint32_t *flags)
 391 {
 392     *pc = env->psw.addr;
 393     *cs_base = 0;
 394     *flags = ((env->psw.mask >> 32) & ~FLAG_MASK_CC) |
 395              ((env->psw.mask & PSW_MASK_32) ? FLAG_MASK_32 : 0);
 396 }
 397
 398 #define MAX_ILEN 6
 399
 400 /* While the PoO talks about ILC (a number between 1-3) what is actually
 401    stored in LowCore is shifted left one bit (an even between 2-6).  As
 402    this is the actual length of the insn and therefore more useful, that
 403    is what we want to pass around and manipulate.  To make sure that we
 404    have applied this distinction universally, rename the "ILC" to "ILEN".  */
 405 static inline int get_ilen(uint8_t opc)
 406 {
 407     switch (opc >> 6) {
 408     case 0:
 409         return 2;
 410     case 1:
 411     case 2:
 412         return 4;
 413     default:
 414         return 6;
 415     }
 416 }
 417
 418 /* PER bits from control register 9 */
 419 #define PER_CR9_EVENT_BRANCH           0x80000000
 420 #define PER_CR9_EVENT_IFETCH           0x40000000
 421 #define PER_CR9_EVENT_STORE            0x20000000
 422 #define PER_CR9_EVENT_STORE_REAL       0x08000000
 423 #define PER_CR9_EVENT_NULLIFICATION    0x01000000
 424 #define PER_CR9_CONTROL_BRANCH_ADDRESS 0x00800000
 425 #define PER_CR9_CONTROL_ALTERATION     0x00200000
 426
 427 /* PER bits from the PER CODE/ATMID/AI in lowcore */
 428 #define PER_CODE_EVENT_BRANCH          0x8000
 429 #define PER_CODE_EVENT_IFETCH          0x4000
 430 #define PER_CODE_EVENT_STORE           0x2000
 431 #define PER_CODE_EVENT_STORE_REAL      0x0800
 432 #define PER_CODE_EVENT_NULLIFICATION   0x0100
 433
 434 /* Compute the ATMID field that is stored in the per_perc_atmid lowcore
 435    entry when a PER exception is triggered.  */
 436 static inline uint8_t get_per_atmid(CPUS390XState *env)
 437 {
 438     return ((env->psw.mask & PSW_MASK_64) ?      (1 << 7) : 0) |
 439            (                                     (1 << 6)    ) |
 440            ((env->psw.mask & PSW_MASK_32) ?      (1 << 5) : 0) |
 441            ((env->psw.mask & PSW_MASK_DAT)?      (1 << 4) : 0) |
 442            ((env->psw.mask & PSW_ASC_SECONDARY)? (1 << 3) : 0) |
 443            ((env->psw.mask & PSW_ASC_ACCREG)?    (1 << 2) : 0);
 444 }
 445
 446 /* Check if an address is within the PER starting address and the PER
 447    ending address.  The address range might loop.  */
 448 static inline bool get_per_in_range(CPUS390XState *env, uint64_t addr)
 449 {
 450     if (env->cregs[10] <= env->cregs[11]) {
 451         return env->cregs[10] <= addr && addr <= env->cregs[11];
 452     } else {
 453         return env->cregs[10] <= addr || addr <= env->cregs[11];
 454     }
 455 }
 456
 457 #ifndef CONFIG_USER_ONLY
 458 /* In several cases of runtime exceptions, we havn't recorded the true
 459    instruction length.  Use these codes when raising exceptions in order
 460    to re-compute the length by examining the insn in memory.  */
 461 #define ILEN_LATER       0x20
 462 #define ILEN_LATER_INC   0x21
 463 void trigger_pgm_exception(CPUS390XState *env, uint32_t code, uint32_t ilen);
 464 #endif
 465
 466 S390CPU *cpu_s390x_init(const char *cpu_model);
 467 S390CPU *s390x_new_cpu(const char *cpu_model, int64_t id, Error **errp);
 468 S390CPU *cpu_s390x_create(const char *cpu_model, Error **errp);
 469 void s390x_translate_init(void);
 470
 471 /* you can call this signal handler from your SIGBUS and SIGSEGV
 472    signal handlers to inform the virtual CPU of exceptions. non zero
 473    is returned if the signal was handled by the virtual CPU.  */
 474 int cpu_s390x_signal_handler(int host_signum, void *pinfo,
 475                            void *puc);
 476 int s390_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
 477                               int mmu_idx);
 478
 479
 480 #ifndef CONFIG_USER_ONLY
 481 void do_restart_interrupt(CPUS390XState *env);
 482
 483 static inline hwaddr decode_basedisp_s(CPUS390XState *env, uint32_t ipb,
 484                                        uint8_t *ar)
 485 {
 486     hwaddr addr = 0;
 487     uint8_t reg;
 488
 489     reg = ipb >> 28;
 490     if (reg > 0) {
 491         addr = env->regs[reg];
 492     }
 493     addr += (ipb >> 16) & 0xfff;
 494     if (ar) {
 495         *ar = reg;
 496     }
 497
 498     return addr;
 499 }
 500
 501 /* Base/displacement are at the same locations. */
 502 #define decode_basedisp_rs decode_basedisp_s
 503
 504 /* helper functions for run_on_cpu() */
 505 static inline void s390_do_cpu_reset(CPUState *cs, void *arg)
 506 {
 507     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 508
 509     scc->cpu_reset(cs);
 510 }
 511 static inline void s390_do_cpu_full_reset(CPUState *cs, void *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
 625 extern void subsystem_reset(void);
 626
 627 #define cpu_init(model) CPU(cpu_s390x_init(model))
 628 #define cpu_signal_handler cpu_s390x_signal_handler
 629
 630 void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 631 #define cpu_list s390_cpu_list
 632 void s390_cpu_model_register_props(Object *obj);
 633 void s390_cpu_model_class_register_props(ObjectClass *oc);
 634 void s390_realize_cpu_model(CPUState *cs, Error **errp);
 635 ObjectClass *s390_cpu_class_by_name(const char *name);
 636
 637 #define EXCP_EXT 1 /* external interrupt */
 638 #define EXCP_SVC 2 /* supervisor call (syscall) */
 639 #define EXCP_PGM 3 /* program interruption */
 640 #define EXCP_IO  7 /* I/O interrupt */
 641 #define EXCP_MCHK 8 /* machine check */
 642
 643 #define INTERRUPT_EXT        (1 << 0)
 644 #define INTERRUPT_TOD        (1 << 1)
 645 #define INTERRUPT_CPUTIMER   (1 << 2)
 646 #define INTERRUPT_IO         (1 << 3)
 647 #define INTERRUPT_MCHK       (1 << 4)
 648
 649 /* Program Status Word.  */
 650 #define S390_PSWM_REGNUM 0
 651 #define S390_PSWA_REGNUM 1
 652 /* General Purpose Registers.  */
 653 #define S390_R0_REGNUM 2
 654 #define S390_R1_REGNUM 3
 655 #define S390_R2_REGNUM 4
 656 #define S390_R3_REGNUM 5
 657 #define S390_R4_REGNUM 6
 658 #define S390_R5_REGNUM 7
 659 #define S390_R6_REGNUM 8
 660 #define S390_R7_REGNUM 9
 661 #define S390_R8_REGNUM 10
 662 #define S390_R9_REGNUM 11
 663 #define S390_R10_REGNUM 12
 664 #define S390_R11_REGNUM 13
 665 #define S390_R12_REGNUM 14
 666 #define S390_R13_REGNUM 15
 667 #define S390_R14_REGNUM 16
 668 #define S390_R15_REGNUM 17
 669 /* Total Core Registers. */
 670 #define S390_NUM_CORE_REGS 18
 671
 672 /* CC optimization */
 673
 674 /* Instead of computing the condition codes after each x86 instruction,
 675  * QEMU just stores the result (called CC_DST), the type of operation
 676  * (called CC_OP) and whatever operands are needed (CC_SRC and possibly
 677  * CC_VR). When the condition codes are needed, the condition codes can
 678  * be calculated using this information. Condition codes are not generated
 679  * if they are only needed for conditional branches.
 680  */
 681 enum cc_op {
 682     CC_OP_CONST0 = 0,           /* CC is 0 */
 683     CC_OP_CONST1,               /* CC is 1 */
 684     CC_OP_CONST2,               /* CC is 2 */
 685     CC_OP_CONST3,               /* CC is 3 */
 686
 687     CC_OP_DYNAMIC,              /* CC calculation defined by env->cc_op */
 688     CC_OP_STATIC,               /* CC value is env->cc_op */
 689
 690     CC_OP_NZ,                   /* env->cc_dst != 0 */
 691     CC_OP_LTGT_32,              /* signed less/greater than (32bit) */
 692     CC_OP_LTGT_64,              /* signed less/greater than (64bit) */
 693     CC_OP_LTUGTU_32,            /* unsigned less/greater than (32bit) */
 694     CC_OP_LTUGTU_64,            /* unsigned less/greater than (64bit) */
 695     CC_OP_LTGT0_32,             /* signed less/greater than 0 (32bit) */
 696     CC_OP_LTGT0_64,             /* signed less/greater than 0 (64bit) */
 697
 698     CC_OP_ADD_64,               /* overflow on add (64bit) */
 699     CC_OP_ADDU_64,              /* overflow on unsigned add (64bit) */
 700     CC_OP_ADDC_64,              /* overflow on unsigned add-carry (64bit) */
 701     CC_OP_SUB_64,               /* overflow on subtraction (64bit) */
 702     CC_OP_SUBU_64,              /* overflow on unsigned subtraction (64bit) */
 703     CC_OP_SUBB_64,              /* overflow on unsigned sub-borrow (64bit) */
 704     CC_OP_ABS_64,               /* sign eval on abs (64bit) */
 705     CC_OP_NABS_64,              /* sign eval on nabs (64bit) */
 706
 707     CC_OP_ADD_32,               /* overflow on add (32bit) */
 708     CC_OP_ADDU_32,              /* overflow on unsigned add (32bit) */
 709     CC_OP_ADDC_32,              /* overflow on unsigned add-carry (32bit) */
 710     CC_OP_SUB_32,               /* overflow on subtraction (32bit) */
 711     CC_OP_SUBU_32,              /* overflow on unsigned subtraction (32bit) */
 712     CC_OP_SUBB_32,              /* overflow on unsigned sub-borrow (32bit) */
 713     CC_OP_ABS_32,               /* sign eval on abs (64bit) */
 714     CC_OP_NABS_32,              /* sign eval on nabs (64bit) */
 715
 716     CC_OP_COMP_32,              /* complement */
 717     CC_OP_COMP_64,              /* complement */
 718
 719     CC_OP_TM_32,                /* test under mask (32bit) */
 720     CC_OP_TM_64,                /* test under mask (64bit) */
 721
 722     CC_OP_NZ_F32,               /* FP dst != 0 (32bit) */
 723     CC_OP_NZ_F64,               /* FP dst != 0 (64bit) */
 724     CC_OP_NZ_F128,              /* FP dst != 0 (128bit) */
 725
 726     CC_OP_ICM,                  /* insert characters under mask */
 727     CC_OP_SLA_32,               /* Calculate shift left signed (32bit) */
 728     CC_OP_SLA_64,               /* Calculate shift left signed (64bit) */
 729     CC_OP_FLOGR,                /* find leftmost one */
 730     CC_OP_MAX
 731 };
 732
 733 static const char *cc_names[] = {
 734     [CC_OP_CONST0]    = "CC_OP_CONST0",
 735     [CC_OP_CONST1]    = "CC_OP_CONST1",
 736     [CC_OP_CONST2]    = "CC_OP_CONST2",
 737     [CC_OP_CONST3]    = "CC_OP_CONST3",
 738     [CC_OP_DYNAMIC]   = "CC_OP_DYNAMIC",
 739     [CC_OP_STATIC]    = "CC_OP_STATIC",
 740     [CC_OP_NZ]        = "CC_OP_NZ",
 741     [CC_OP_LTGT_32]   = "CC_OP_LTGT_32",
 742     [CC_OP_LTGT_64]   = "CC_OP_LTGT_64",
 743     [CC_OP_LTUGTU_32] = "CC_OP_LTUGTU_32",
 744     [CC_OP_LTUGTU_64] = "CC_OP_LTUGTU_64",
 745     [CC_OP_LTGT0_32]  = "CC_OP_LTGT0_32",
 746     [CC_OP_LTGT0_64]  = "CC_OP_LTGT0_64",
 747     [CC_OP_ADD_64]    = "CC_OP_ADD_64",
 748     [CC_OP_ADDU_64]   = "CC_OP_ADDU_64",
 749     [CC_OP_ADDC_64]   = "CC_OP_ADDC_64",
 750     [CC_OP_SUB_64]    = "CC_OP_SUB_64",
 751     [CC_OP_SUBU_64]   = "CC_OP_SUBU_64",
 752     [CC_OP_SUBB_64]   = "CC_OP_SUBB_64",
 753     [CC_OP_ABS_64]    = "CC_OP_ABS_64",
 754     [CC_OP_NABS_64]   = "CC_OP_NABS_64",
 755     [CC_OP_ADD_32]    = "CC_OP_ADD_32",
 756     [CC_OP_ADDU_32]   = "CC_OP_ADDU_32",
 757     [CC_OP_ADDC_32]   = "CC_OP_ADDC_32",
 758     [CC_OP_SUB_32]    = "CC_OP_SUB_32",
 759     [CC_OP_SUBU_32]   = "CC_OP_SUBU_32",
 760     [CC_OP_SUBB_32]   = "CC_OP_SUBB_32",
 761     [CC_OP_ABS_32]    = "CC_OP_ABS_32",
 762     [CC_OP_NABS_32]   = "CC_OP_NABS_32",
 763     [CC_OP_COMP_32]   = "CC_OP_COMP_32",
 764     [CC_OP_COMP_64]   = "CC_OP_COMP_64",
 765     [CC_OP_TM_32]     = "CC_OP_TM_32",
 766     [CC_OP_TM_64]     = "CC_OP_TM_64",
 767     [CC_OP_NZ_F32]    = "CC_OP_NZ_F32",
 768     [CC_OP_NZ_F64]    = "CC_OP_NZ_F64",
 769     [CC_OP_NZ_F128]   = "CC_OP_NZ_F128",
 770     [CC_OP_ICM]       = "CC_OP_ICM",
 771     [CC_OP_SLA_32]    = "CC_OP_SLA_32",
 772     [CC_OP_SLA_64]    = "CC_OP_SLA_64",
 773     [CC_OP_FLOGR]     = "CC_OP_FLOGR",
 774 };
 775
 776 static inline const char *cc_name(int cc_op)
 777 {
 778     return cc_names[cc_op];
 779 }
 780
 781 static inline void setcc(S390CPU *cpu, uint64_t cc)
 782 {
 783     CPUS390XState *env = &cpu->env;
 784
 785     env->psw.mask &= ~(3ull << 44);
 786     env->psw.mask |= (cc & 3) << 44;
 787     env->cc_op = cc;
 788 }
 789
 790 typedef struct LowCore
 791 {
 792     /* prefix area: defined by architecture */
 793     uint32_t        ccw1[2];                  /* 0x000 */
 794     uint32_t        ccw2[4];                  /* 0x008 */
 795     uint8_t         pad1[0x80-0x18];          /* 0x018 */
 796     uint32_t        ext_params;               /* 0x080 */
 797     uint16_t        cpu_addr;                 /* 0x084 */
 798     uint16_t        ext_int_code;             /* 0x086 */
 799     uint16_t        svc_ilen;                 /* 0x088 */
 800     uint16_t        svc_code;                 /* 0x08a */
 801     uint16_t        pgm_ilen;                 /* 0x08c */
 802     uint16_t        pgm_code;                 /* 0x08e */
 803     uint32_t        data_exc_code;            /* 0x090 */
 804     uint16_t        mon_class_num;            /* 0x094 */
 805     uint16_t        per_perc_atmid;           /* 0x096 */
 806     uint64_t        per_address;              /* 0x098 */
 807     uint8_t         exc_access_id;            /* 0x0a0 */
 808     uint8_t         per_access_id;            /* 0x0a1 */
 809     uint8_t         op_access_id;             /* 0x0a2 */
 810     uint8_t         ar_access_id;             /* 0x0a3 */
 811     uint8_t         pad2[0xA8-0xA4];          /* 0x0a4 */
 812     uint64_t        trans_exc_code;           /* 0x0a8 */
 813     uint64_t        monitor_code;             /* 0x0b0 */
 814     uint16_t        subchannel_id;            /* 0x0b8 */
 815     uint16_t        subchannel_nr;            /* 0x0ba */
 816     uint32_t        io_int_parm;              /* 0x0bc */
 817     uint32_t        io_int_word;              /* 0x0c0 */
 818     uint8_t         pad3[0xc8-0xc4];          /* 0x0c4 */
 819     uint32_t        stfl_fac_list;            /* 0x0c8 */
 820     uint8_t         pad4[0xe8-0xcc];          /* 0x0cc */
 821     uint32_t        mcck_interruption_code[2]; /* 0x0e8 */
 822     uint8_t         pad5[0xf4-0xf0];          /* 0x0f0 */
 823     uint32_t        external_damage_code;     /* 0x0f4 */
 824     uint64_t        failing_storage_address;  /* 0x0f8 */
 825     uint8_t         pad6[0x110-0x100];        /* 0x100 */
 826     uint64_t        per_breaking_event_addr;  /* 0x110 */
 827     uint8_t         pad7[0x120-0x118];        /* 0x118 */
 828     PSW             restart_old_psw;          /* 0x120 */
 829     PSW             external_old_psw;         /* 0x130 */
 830     PSW             svc_old_psw;              /* 0x140 */
 831     PSW             program_old_psw;          /* 0x150 */
 832     PSW             mcck_old_psw;             /* 0x160 */
 833     PSW             io_old_psw;               /* 0x170 */
 834     uint8_t         pad8[0x1a0-0x180];        /* 0x180 */
 835     PSW             restart_new_psw;          /* 0x1a0 */
 836     PSW             external_new_psw;         /* 0x1b0 */
 837     PSW             svc_new_psw;              /* 0x1c0 */
 838     PSW             program_new_psw;          /* 0x1d0 */
 839     PSW             mcck_new_psw;             /* 0x1e0 */
 840     PSW             io_new_psw;               /* 0x1f0 */
 841     PSW             return_psw;               /* 0x200 */
 842     uint8_t         irb[64];                  /* 0x210 */
 843     uint64_t        sync_enter_timer;         /* 0x250 */
 844     uint64_t        async_enter_timer;        /* 0x258 */
 845     uint64_t        exit_timer;               /* 0x260 */
 846     uint64_t        last_update_timer;        /* 0x268 */
 847     uint64_t        user_timer;               /* 0x270 */
 848     uint64_t        system_timer;             /* 0x278 */
 849     uint64_t        last_update_clock;        /* 0x280 */
 850     uint64_t        steal_clock;              /* 0x288 */
 851     PSW             return_mcck_psw;          /* 0x290 */
 852     uint8_t         pad9[0xc00-0x2a0];        /* 0x2a0 */
 853     /* System info area */
 854     uint64_t        save_area[16];            /* 0xc00 */
 855     uint8_t         pad10[0xd40-0xc80];       /* 0xc80 */
 856     uint64_t        kernel_stack;             /* 0xd40 */
 857     uint64_t        thread_info;              /* 0xd48 */
 858     uint64_t        async_stack;              /* 0xd50 */
 859     uint64_t        kernel_asce;              /* 0xd58 */
 860     uint64_t        user_asce;                /* 0xd60 */
 861     uint64_t        panic_stack;              /* 0xd68 */
 862     uint64_t        user_exec_asce;           /* 0xd70 */
 863     uint8_t         pad11[0xdc0-0xd78];       /* 0xd78 */
 864
 865     /* SMP info area: defined by DJB */
 866     uint64_t        clock_comparator;         /* 0xdc0 */
 867     uint64_t        ext_call_fast;            /* 0xdc8 */
 868     uint64_t        percpu_offset;            /* 0xdd0 */
 869     uint64_t        current_task;             /* 0xdd8 */
 870     uint32_t        softirq_pending;          /* 0xde0 */
 871     uint32_t        pad_0x0de4;               /* 0xde4 */
 872     uint64_t        int_clock;                /* 0xde8 */
 873     uint8_t         pad12[0xe00-0xdf0];       /* 0xdf0 */
 874
 875     /* 0xe00 is used as indicator for dump tools */
 876     /* whether the kernel died with panic() or not */
 877     uint32_t        panic_magic;              /* 0xe00 */
 878
 879     uint8_t         pad13[0x11b8-0xe04];      /* 0xe04 */
 880
 881     /* 64 bit extparam used for pfault, diag 250 etc  */
 882     uint64_t        ext_params2;               /* 0x11B8 */
 883
 884     uint8_t         pad14[0x1200-0x11C0];      /* 0x11C0 */
 885
 886     /* System info area */
 887
 888     uint64_t        floating_pt_save_area[16]; /* 0x1200 */
 889     uint64_t        gpregs_save_area[16];      /* 0x1280 */
 890     uint32_t        st_status_fixed_logout[4]; /* 0x1300 */
 891     uint8_t         pad15[0x1318-0x1310];      /* 0x1310 */
 892     uint32_t        prefixreg_save_area;       /* 0x1318 */
 893     uint32_t        fpt_creg_save_area;        /* 0x131c */
 894     uint8_t         pad16[0x1324-0x1320];      /* 0x1320 */
 895     uint32_t        tod_progreg_save_area;     /* 0x1324 */
 896     uint32_t        cpu_timer_save_area[2];    /* 0x1328 */
 897     uint32_t        clock_comp_save_area[2];   /* 0x1330 */
 898     uint8_t         pad17[0x1340-0x1338];      /* 0x1338 */
 899     uint32_t        access_regs_save_area[16]; /* 0x1340 */
 900     uint64_t        cregs_save_area[16];       /* 0x1380 */
 901
 902     /* align to the top of the prefix area */
 903
 904     uint8_t         pad18[0x2000-0x1400];      /* 0x1400 */
 905 } QEMU_PACKED LowCore;
 906
 907 /* STSI */
 908 #define STSI_LEVEL_MASK         0x00000000f0000000ULL
 909 #define STSI_LEVEL_CURRENT      0x0000000000000000ULL
 910 #define STSI_LEVEL_1            0x0000000010000000ULL
 911 #define STSI_LEVEL_2            0x0000000020000000ULL
 912 #define STSI_LEVEL_3            0x0000000030000000ULL
 913 #define STSI_R0_RESERVED_MASK   0x000000000fffff00ULL
 914 #define STSI_R0_SEL1_MASK       0x00000000000000ffULL
 915 #define STSI_R1_RESERVED_MASK   0x00000000ffff0000ULL
 916 #define STSI_R1_SEL2_MASK       0x000000000000ffffULL
 917
 918 /* Basic Machine Configuration */
 919 struct sysib_111 {
 920     uint32_t res1[8];
 921     uint8_t  manuf[16];
 922     uint8_t  type[4];
 923     uint8_t  res2[12];
 924     uint8_t  model[16];
 925     uint8_t  sequence[16];
 926     uint8_t  plant[4];
 927     uint8_t  res3[156];
 928 };
 929
 930 /* Basic Machine CPU */
 931 struct sysib_121 {
 932     uint32_t res1[80];
 933     uint8_t  sequence[16];
 934     uint8_t  plant[4];
 935     uint8_t  res2[2];
 936     uint16_t cpu_addr;
 937     uint8_t  res3[152];
 938 };
 939
 940 /* Basic Machine CPUs */
 941 struct sysib_122 {
 942     uint8_t res1[32];
 943     uint32_t capability;
 944     uint16_t total_cpus;
 945     uint16_t active_cpus;
 946     uint16_t standby_cpus;
 947     uint16_t reserved_cpus;
 948     uint16_t adjustments[2026];
 949 };
 950
 951 /* LPAR CPU */
 952 struct sysib_221 {
 953     uint32_t res1[80];
 954     uint8_t  sequence[16];
 955     uint8_t  plant[4];
 956     uint16_t cpu_id;
 957     uint16_t cpu_addr;
 958     uint8_t  res3[152];
 959 };
 960
 961 /* LPAR CPUs */
 962 struct sysib_222 {
 963     uint32_t res1[32];
 964     uint16_t lpar_num;
 965     uint8_t  res2;
 966     uint8_t  lcpuc;
 967     uint16_t total_cpus;
 968     uint16_t conf_cpus;
 969     uint16_t standby_cpus;
 970     uint16_t reserved_cpus;
 971     uint8_t  name[8];
 972     uint32_t caf;
 973     uint8_t  res3[16];
 974     uint16_t dedicated_cpus;
 975     uint16_t shared_cpus;
 976     uint8_t  res4[180];
 977 };
 978
 979 /* VM CPUs */
 980 struct sysib_322 {
 981     uint8_t  res1[31];
 982     uint8_t  count;
 983     struct {
 984         uint8_t  res2[4];
 985         uint16_t total_cpus;
 986         uint16_t conf_cpus;
 987         uint16_t standby_cpus;
 988         uint16_t reserved_cpus;
 989         uint8_t  name[8];
 990         uint32_t caf;
 991         uint8_t  cpi[16];
 992         uint8_t res5[3];
 993         uint8_t ext_name_encoding;
 994         uint32_t res3;
 995         uint8_t uuid[16];
 996     } vm[8];
 997     uint8_t res4[1504];
 998     uint8_t ext_names[8][256];
 999 };
1000
1001 /* MMU defines */
1002 #define _ASCE_ORIGIN            ~0xfffULL /* segment table origin             */
1003 #define _ASCE_SUBSPACE          0x200     /* subspace group control           */
1004 #define _ASCE_PRIVATE_SPACE     0x100     /* private space control            */
1005 #define _ASCE_ALT_EVENT         0x80      /* storage alteration event control */
1006 #define _ASCE_SPACE_SWITCH      0x40      /* space switch event               */
1007 #define _ASCE_REAL_SPACE        0x20      /* real space control               */
1008 #define _ASCE_TYPE_MASK         0x0c      /* asce table type mask             */
1009 #define _ASCE_TYPE_REGION1      0x0c      /* region first table type          */
1010 #define _ASCE_TYPE_REGION2      0x08      /* region second table type         */
1011 #define _ASCE_TYPE_REGION3      0x04      /* region third table type          */
1012 #define _ASCE_TYPE_SEGMENT      0x00      /* segment table type               */
1013 #define _ASCE_TABLE_LENGTH      0x03      /* region table length              */
1014
1015 #define _REGION_ENTRY_ORIGIN    ~0xfffULL /* region/segment table origin      */
1016 #define _REGION_ENTRY_RO        0x200     /* region/segment protection bit    */
1017 #define _REGION_ENTRY_TF        0xc0      /* region/segment table offset      */
1018 #define _REGION_ENTRY_INV       0x20      /* invalid region table entry       */
1019 #define _REGION_ENTRY_TYPE_MASK 0x0c      /* region/segment table type mask   */
1020 #define _REGION_ENTRY_TYPE_R1   0x0c      /* region first table type          */
1021 #define _REGION_ENTRY_TYPE_R2   0x08      /* region second table type         */
1022 #define _REGION_ENTRY_TYPE_R3   0x04      /* region third table type          */
1023 #define _REGION_ENTRY_LENGTH    0x03      /* region third length              */
1024
1025 #define _SEGMENT_ENTRY_ORIGIN   ~0x7ffULL /* segment table origin             */
1026 #define _SEGMENT_ENTRY_FC       0x400     /* format control                   */
1027 #define _SEGMENT_ENTRY_RO       0x200     /* page protection bit              */
1028 #define _SEGMENT_ENTRY_INV      0x20      /* invalid segment table entry      */
1029
1030 #define _PAGE_RO        0x200            /* HW read-only bit  */
1031 #define _PAGE_INVALID   0x400            /* HW invalid bit    */
1032 #define _PAGE_RES0      0x800            /* bit must be zero  */
1033
1034 #define SK_C                    (0x1 << 1)
1035 #define SK_R                    (0x1 << 2)
1036 #define SK_F                    (0x1 << 3)
1037 #define SK_ACC_MASK             (0xf << 4)
1038
1039 /* SIGP order codes */
1040 #define SIGP_SENSE             0x01
1041 #define SIGP_EXTERNAL_CALL     0x02
1042 #define SIGP_EMERGENCY         0x03
1043 #define SIGP_START             0x04
1044 #define SIGP_STOP              0x05
1045 #define SIGP_RESTART           0x06
1046 #define SIGP_STOP_STORE_STATUS 0x09
1047 #define SIGP_INITIAL_CPU_RESET 0x0b
1048 #define SIGP_CPU_RESET         0x0c
1049 #define SIGP_SET_PREFIX        0x0d
1050 #define SIGP_STORE_STATUS_ADDR 0x0e
1051 #define SIGP_SET_ARCH          0x12
1052 #define SIGP_STORE_ADTL_STATUS 0x17
1053
1054 /* SIGP condition codes */
1055 #define SIGP_CC_ORDER_CODE_ACCEPTED 0
1056 #define SIGP_CC_STATUS_STORED       1
1057 #define SIGP_CC_BUSY                2
1058 #define SIGP_CC_NOT_OPERATIONAL     3
1059
1060 /* SIGP status bits */
1061 #define SIGP_STAT_EQUIPMENT_CHECK   0x80000000UL
1062 #define SIGP_STAT_INCORRECT_STATE   0x00000200UL
1063 #define SIGP_STAT_INVALID_PARAMETER 0x00000100UL
1064 #define SIGP_STAT_EXT_CALL_PENDING  0x00000080UL
1065 #define SIGP_STAT_STOPPED           0x00000040UL
1066 #define SIGP_STAT_OPERATOR_INTERV   0x00000020UL
1067 #define SIGP_STAT_CHECK_STOP        0x00000010UL
1068 #define SIGP_STAT_INOPERATIVE       0x00000004UL
1069 #define SIGP_STAT_INVALID_ORDER     0x00000002UL
1070 #define SIGP_STAT_RECEIVER_CHECK    0x00000001UL
1071
1072 /* SIGP SET ARCHITECTURE modes */
1073 #define SIGP_MODE_ESA_S390 0
1074 #define SIGP_MODE_Z_ARCH_TRANS_ALL_PSW 1
1075 #define SIGP_MODE_Z_ARCH_TRANS_CUR_PSW 2
1076
1077 void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr);
1078 int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc,
1079                   target_ulong *raddr, int *flags, bool exc);
1080 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code);
1081 uint32_t calc_cc(CPUS390XState *env, uint32_t cc_op, uint64_t src, uint64_t dst,
1082                  uint64_t vr);
1083 void s390_cpu_recompute_watchpoints(CPUState *cs);
1084
1085 int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
1086                          int len, bool is_write);
1087
1088 #define s390_cpu_virt_mem_read(cpu, laddr, ar, dest, len)    \
1089         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, false)
1090 #define s390_cpu_virt_mem_write(cpu, laddr, ar, dest, len)       \
1091         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, true)
1092 #define s390_cpu_virt_mem_check_write(cpu, laddr, ar, len)   \
1093         s390_cpu_virt_mem_rw(cpu, laddr, ar, NULL, len, true)
1094
1095 /* The value of the TOD clock for 1.1.1970. */
1096 #define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
1097
1098 /* Converts ns to s390's clock format */
1099 static inline uint64_t time2tod(uint64_t ns) {
1100     return (ns << 9) / 125;
1101 }
1102
1103 /* Converts s390's clock format to ns */
1104 static inline uint64_t tod2time(uint64_t t) {
1105     return (t * 125) >> 9;
1106 }
1107
1108 /* from s390-virtio-ccw */
1109 #define MEM_SECTION_SIZE             0x10000000UL
1110 #define MAX_AVAIL_SLOTS              32
1111
1112 /* fpu_helper.c */
1113 uint32_t set_cc_nz_f32(float32 v);
1114 uint32_t set_cc_nz_f64(float64 v);
1115 uint32_t set_cc_nz_f128(float128 v);
1116
1117 /* misc_helper.c */
1118 #ifndef CONFIG_USER_ONLY
1119 int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3);
1120 void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3);
1121 #endif
1122 void program_interrupt(CPUS390XState *env, uint32_t code, int ilen);
1123 void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp,
1124                                      uintptr_t retaddr);
1125
1126 #ifdef CONFIG_KVM
1127 void kvm_s390_io_interrupt(uint16_t subchannel_id,
1128                            uint16_t subchannel_nr, uint32_t io_int_parm,
1129                            uint32_t io_int_word);
1130 void kvm_s390_crw_mchk(void);
1131 void kvm_s390_enable_css_support(S390CPU *cpu);
1132 int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
1133                                     int vq, bool assign);
1134 int kvm_s390_cpu_restart(S390CPU *cpu);
1135 int kvm_s390_get_memslot_count(KVMState *s);
1136 void kvm_s390_cmma_reset(void);
1137 int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state);
1138 void kvm_s390_reset_vcpu(S390CPU *cpu);
1139 int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit, uint64_t *hw_limit);
1140 void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu);
1141 int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu);
1142 int kvm_s390_get_ri(void);
1143 void kvm_s390_crypto_reset(void);
1144 #else
1145 static inline void kvm_s390_io_interrupt(uint16_t subchannel_id,
1146                                         uint16_t subchannel_nr,
1147                                         uint32_t io_int_parm,
1148                                         uint32_t io_int_word)
1149 {
1150 }
1151 static inline void kvm_s390_crw_mchk(void)
1152 {
1153 }
1154 static inline void kvm_s390_enable_css_support(S390CPU *cpu)
1155 {
1156 }
1157 static inline int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier,
1158                                                   uint32_t sch, int vq,
1159                                                   bool assign)
1160 {
1161     return -ENOSYS;
1162 }
1163 static inline int kvm_s390_cpu_restart(S390CPU *cpu)
1164 {
1165     return -ENOSYS;
1166 }
1167 static inline void kvm_s390_cmma_reset(void)
1168 {
1169 }
1170 static inline int kvm_s390_get_memslot_count(KVMState *s)
1171 {
1172   return MAX_AVAIL_SLOTS;
1173 }
1174 static inline int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
1175 {
1176     return -ENOSYS;
1177 }
1178 static inline void kvm_s390_reset_vcpu(S390CPU *cpu)
1179 {
1180 }
1181 static inline int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit,
1182                                          uint64_t *hw_limit)
1183 {
1184     return 0;
1185 }
1186 static inline void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
1187 {
1188 }
1189 static inline int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
1190 {
1191     return 0;
1192 }
1193 static inline int kvm_s390_get_ri(void)
1194 {
1195     return 0;
1196 }
1197 static inline void kvm_s390_crypto_reset(void)
1198 {
1199 }
1200 #endif
1201
1202 static inline int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit)
1203 {
1204     if (kvm_enabled()) {
1205         return kvm_s390_set_mem_limit(kvm_state, new_limit, hw_limit);
1206     }
1207     return 0;
1208 }
1209
1210 static inline void s390_cmma_reset(void)
1211 {
1212     if (kvm_enabled()) {
1213         kvm_s390_cmma_reset();
1214     }
1215 }
1216
1217 static inline int s390_cpu_restart(S390CPU *cpu)
1218 {
1219     if (kvm_enabled()) {
1220         return kvm_s390_cpu_restart(cpu);
1221     }
1222     return -ENOSYS;
1223 }
1224
1225 static inline int s390_get_memslot_count(KVMState *s)
1226 {
1227     if (kvm_enabled()) {
1228         return kvm_s390_get_memslot_count(s);
1229     } else {
1230         return MAX_AVAIL_SLOTS;
1231     }
1232 }
1233
1234 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
1235                        uint32_t io_int_parm, uint32_t io_int_word);
1236 void s390_crw_mchk(void);
1237
1238 static inline int s390_assign_subch_ioeventfd(EventNotifier *notifier,
1239                                               uint32_t sch_id, int vq,
1240                                               bool assign)
1241 {
1242     return kvm_s390_assign_subch_ioeventfd(notifier, sch_id, vq, assign);
1243 }
1244
1245 static inline void s390_crypto_reset(void)
1246 {
1247     if (kvm_enabled()) {
1248         kvm_s390_crypto_reset();
1249     }
1250 }
1251
1252 /* machine check interruption code */
1253
1254 /* subclasses */
1255 #define MCIC_SC_SD 0x8000000000000000ULL
1256 #define MCIC_SC_PD 0x4000000000000000ULL
1257 #define MCIC_SC_SR 0x2000000000000000ULL
1258 #define MCIC_SC_CD 0x0800000000000000ULL
1259 #define MCIC_SC_ED 0x0400000000000000ULL
1260 #define MCIC_SC_DG 0x0100000000000000ULL
1261 #define MCIC_SC_W  0x0080000000000000ULL
1262 #define MCIC_SC_CP 0x0040000000000000ULL
1263 #define MCIC_SC_SP 0x0020000000000000ULL
1264 #define MCIC_SC_CK 0x0010000000000000ULL
1265
1266 /* subclass modifiers */
1267 #define MCIC_SCM_B  0x0002000000000000ULL
1268 #define MCIC_SCM_DA 0x0000000020000000ULL
1269 #define MCIC_SCM_AP 0x0000000000080000ULL
1270
1271 /* storage errors */
1272 #define MCIC_SE_SE 0x0000800000000000ULL
1273 #define MCIC_SE_SC 0x0000400000000000ULL
1274 #define MCIC_SE_KE 0x0000200000000000ULL
1275 #define MCIC_SE_DS 0x0000100000000000ULL
1276 #define MCIC_SE_IE 0x0000000080000000ULL
1277
1278 /* validity bits */
1279 #define MCIC_VB_WP 0x0000080000000000ULL
1280 #define MCIC_VB_MS 0x0000040000000000ULL
1281 #define MCIC_VB_PM 0x0000020000000000ULL
1282 #define MCIC_VB_IA 0x0000010000000000ULL
1283 #define MCIC_VB_FA 0x0000008000000000ULL
1284 #define MCIC_VB_VR 0x0000004000000000ULL
1285 #define MCIC_VB_EC 0x0000002000000000ULL
1286 #define MCIC_VB_FP 0x0000001000000000ULL
1287 #define MCIC_VB_GR 0x0000000800000000ULL
1288 #define MCIC_VB_CR 0x0000000400000000ULL
1289 #define MCIC_VB_ST 0x0000000100000000ULL
1290 #define MCIC_VB_AR 0x0000000040000000ULL
1291 #define MCIC_VB_PR 0x0000000000200000ULL
1292 #define MCIC_VB_FC 0x0000000000100000ULL
1293 #define MCIC_VB_CT 0x0000000000020000ULL
1294 #define MCIC_VB_CC 0x0000000000010000ULL
1295
1296 #endif