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
  27 #define TARGET_LONG_BITS 64
  28
  29 #define ELF_MACHINE_UNAME "S390X"
  30
  31 #define CPUArchState struct CPUS390XState
  32
  33 #include "exec/cpu-defs.h"
  34 #define TARGET_PAGE_BITS 12
  35
  36 #define TARGET_PHYS_ADDR_SPACE_BITS 64
  37 #define TARGET_VIRT_ADDR_SPACE_BITS 64
  38
  39 #include "exec/cpu-all.h"
  40
  41 #include "fpu/softfloat.h"
  42
  43 #define NB_MMU_MODES 3
  44 #define TARGET_INSN_START_EXTRA_WORDS 1
  45
  46 #define MMU_MODE0_SUFFIX _primary
  47 #define MMU_MODE1_SUFFIX _secondary
  48 #define MMU_MODE2_SUFFIX _home
  49
  50 #define MMU_USER_IDX 0
  51
  52 #define MAX_EXT_QUEUE 16
  53 #define MAX_IO_QUEUE 16
  54 #define MAX_MCHK_QUEUE 16
  55
  56 #define PSW_MCHK_MASK 0x0004000000000000
  57 #define PSW_IO_MASK 0x0200000000000000
  58
  59 typedef struct PSW {
  60     uint64_t mask;
  61     uint64_t addr;
  62 } PSW;
  63
  64 typedef struct ExtQueue {
  65     uint32_t code;
  66     uint32_t param;
  67     uint32_t param64;
  68 } ExtQueue;
  69
  70 typedef struct IOIntQueue {
  71     uint16_t id;
  72     uint16_t nr;
  73     uint32_t parm;
  74     uint32_t word;
  75 } IOIntQueue;
  76
  77 typedef struct MchkQueue {
  78     uint16_t type;
  79 } MchkQueue;
  80
  81 typedef struct CPUS390XState {
  82     uint64_t regs[16];     /* GP registers */
  83     /*
  84      * The floating point registers are part of the vector registers.
  85      * vregs[0][0] -> vregs[15][0] are 16 floating point registers
  86      */
  87     CPU_DoubleU vregs[32][2];  /* vector registers */
  88     uint32_t aregs[16];    /* access registers */
  89
  90     uint32_t fpc;          /* floating-point control register */
  91     uint32_t cc_op;
  92
  93     float_status fpu_status; /* passed to softfloat lib */
  94
  95     /* The low part of a 128-bit return, or remainder of a divide.  */
  96     uint64_t retxl;
  97
  98     PSW psw;
  99
 100     uint64_t cc_src;
 101     uint64_t cc_dst;
 102     uint64_t cc_vr;
 103
 104     uint64_t __excp_addr;
 105     uint64_t psa;
 106
 107     uint32_t int_pgm_code;
 108     uint32_t int_pgm_ilen;
 109
 110     uint32_t int_svc_code;
 111     uint32_t int_svc_ilen;
 112
 113     uint64_t per_address;
 114     uint16_t per_perc_atmid;
 115
 116     uint64_t cregs[16]; /* control registers */
 117
 118     ExtQueue ext_queue[MAX_EXT_QUEUE];
 119     IOIntQueue io_queue[MAX_IO_QUEUE][8];
 120     MchkQueue mchk_queue[MAX_MCHK_QUEUE];
 121
 122     int pending_int;
 123     int ext_index;
 124     int io_index[8];
 125     int mchk_index;
 126
 127     uint64_t ckc;
 128     uint64_t cputm;
 129     uint32_t todpr;
 130
 131     uint64_t pfault_token;
 132     uint64_t pfault_compare;
 133     uint64_t pfault_select;
 134
 135     uint64_t gbea;
 136     uint64_t pp;
 137
 138     CPU_COMMON
 139
 140     /* reset does memset(0) up to here */
 141
 142     uint32_t cpu_num;
 143     uint32_t machine_type;
 144
 145     uint64_t tod_offset;
 146     uint64_t tod_basetime;
 147     QEMUTimer *tod_timer;
 148
 149     QEMUTimer *cpu_timer;
 150
 151     /*
 152      * The cpu state represents the logical state of a cpu. In contrast to other
 153      * architectures, there is a difference between a halt and a stop on s390.
 154      * If all cpus are either stopped (including check stop) or in the disabled
 155      * wait state, the vm can be shut down.
 156      */
 157 #define CPU_STATE_UNINITIALIZED        0x00
 158 #define CPU_STATE_STOPPED              0x01
 159 #define CPU_STATE_CHECK_STOP           0x02
 160 #define CPU_STATE_OPERATING            0x03
 161 #define CPU_STATE_LOAD                 0x04
 162     uint8_t cpu_state;
 163
 164     /* currently processed sigp order */
 165     uint8_t sigp_order;
 166
 167 } CPUS390XState;
 168
 169 static inline CPU_DoubleU *get_freg(CPUS390XState *cs, int nr)
 170 {
 171     return &cs->vregs[nr][0];
 172 }
 173
 174 #include "cpu-qom.h"
 175 #include <sysemu/kvm.h>
 176
 177 /* distinguish between 24 bit and 31 bit addressing */
 178 #define HIGH_ORDER_BIT 0x80000000
 179
 180 /* Interrupt Codes */
 181 /* Program Interrupts */
 182 #define PGM_OPERATION                   0x0001
 183 #define PGM_PRIVILEGED                  0x0002
 184 #define PGM_EXECUTE                     0x0003
 185 #define PGM_PROTECTION                  0x0004
 186 #define PGM_ADDRESSING                  0x0005
 187 #define PGM_SPECIFICATION               0x0006
 188 #define PGM_DATA                        0x0007
 189 #define PGM_FIXPT_OVERFLOW              0x0008
 190 #define PGM_FIXPT_DIVIDE                0x0009
 191 #define PGM_DEC_OVERFLOW                0x000a
 192 #define PGM_DEC_DIVIDE                  0x000b
 193 #define PGM_HFP_EXP_OVERFLOW            0x000c
 194 #define PGM_HFP_EXP_UNDERFLOW           0x000d
 195 #define PGM_HFP_SIGNIFICANCE            0x000e
 196 #define PGM_HFP_DIVIDE                  0x000f
 197 #define PGM_SEGMENT_TRANS               0x0010
 198 #define PGM_PAGE_TRANS                  0x0011
 199 #define PGM_TRANS_SPEC                  0x0012
 200 #define PGM_SPECIAL_OP                  0x0013
 201 #define PGM_OPERAND                     0x0015
 202 #define PGM_TRACE_TABLE                 0x0016
 203 #define PGM_SPACE_SWITCH                0x001c
 204 #define PGM_HFP_SQRT                    0x001d
 205 #define PGM_PC_TRANS_SPEC               0x001f
 206 #define PGM_AFX_TRANS                   0x0020
 207 #define PGM_ASX_TRANS                   0x0021
 208 #define PGM_LX_TRANS                    0x0022
 209 #define PGM_EX_TRANS                    0x0023
 210 #define PGM_PRIM_AUTH                   0x0024
 211 #define PGM_SEC_AUTH                    0x0025
 212 #define PGM_ALET_SPEC                   0x0028
 213 #define PGM_ALEN_SPEC                   0x0029
 214 #define PGM_ALE_SEQ                     0x002a
 215 #define PGM_ASTE_VALID                  0x002b
 216 #define PGM_ASTE_SEQ                    0x002c
 217 #define PGM_EXT_AUTH                    0x002d
 218 #define PGM_STACK_FULL                  0x0030
 219 #define PGM_STACK_EMPTY                 0x0031
 220 #define PGM_STACK_SPEC                  0x0032
 221 #define PGM_STACK_TYPE                  0x0033
 222 #define PGM_STACK_OP                    0x0034
 223 #define PGM_ASCE_TYPE                   0x0038
 224 #define PGM_REG_FIRST_TRANS             0x0039
 225 #define PGM_REG_SEC_TRANS               0x003a
 226 #define PGM_REG_THIRD_TRANS             0x003b
 227 #define PGM_MONITOR                     0x0040
 228 #define PGM_PER                         0x0080
 229 #define PGM_CRYPTO                      0x0119
 230
 231 /* External Interrupts */
 232 #define EXT_INTERRUPT_KEY               0x0040
 233 #define EXT_CLOCK_COMP                  0x1004
 234 #define EXT_CPU_TIMER                   0x1005
 235 #define EXT_MALFUNCTION                 0x1200
 236 #define EXT_EMERGENCY                   0x1201
 237 #define EXT_EXTERNAL_CALL               0x1202
 238 #define EXT_ETR                         0x1406
 239 #define EXT_SERVICE                     0x2401
 240 #define EXT_VIRTIO                      0x2603
 241
 242 /* PSW defines */
 243 #undef PSW_MASK_PER
 244 #undef PSW_MASK_DAT
 245 #undef PSW_MASK_IO
 246 #undef PSW_MASK_EXT
 247 #undef PSW_MASK_KEY
 248 #undef PSW_SHIFT_KEY
 249 #undef PSW_MASK_MCHECK
 250 #undef PSW_MASK_WAIT
 251 #undef PSW_MASK_PSTATE
 252 #undef PSW_MASK_ASC
 253 #undef PSW_MASK_CC
 254 #undef PSW_MASK_PM
 255 #undef PSW_MASK_64
 256 #undef PSW_MASK_32
 257 #undef PSW_MASK_ESA_ADDR
 258
 259 #define PSW_MASK_PER            0x4000000000000000ULL
 260 #define PSW_MASK_DAT            0x0400000000000000ULL
 261 #define PSW_MASK_IO             0x0200000000000000ULL
 262 #define PSW_MASK_EXT            0x0100000000000000ULL
 263 #define PSW_MASK_KEY            0x00F0000000000000ULL
 264 #define PSW_SHIFT_KEY           56
 265 #define PSW_MASK_MCHECK         0x0004000000000000ULL
 266 #define PSW_MASK_WAIT           0x0002000000000000ULL
 267 #define PSW_MASK_PSTATE         0x0001000000000000ULL
 268 #define PSW_MASK_ASC            0x0000C00000000000ULL
 269 #define PSW_MASK_CC             0x0000300000000000ULL
 270 #define PSW_MASK_PM             0x00000F0000000000ULL
 271 #define PSW_MASK_64             0x0000000100000000ULL
 272 #define PSW_MASK_32             0x0000000080000000ULL
 273 #define PSW_MASK_ESA_ADDR       0x000000007fffffffULL
 274
 275 #undef PSW_ASC_PRIMARY
 276 #undef PSW_ASC_ACCREG
 277 #undef PSW_ASC_SECONDARY
 278 #undef PSW_ASC_HOME
 279
 280 #define PSW_ASC_PRIMARY         0x0000000000000000ULL
 281 #define PSW_ASC_ACCREG          0x0000400000000000ULL
 282 #define PSW_ASC_SECONDARY       0x0000800000000000ULL
 283 #define PSW_ASC_HOME            0x0000C00000000000ULL
 284
 285 /* tb flags */
 286
 287 #define FLAG_MASK_PER           (PSW_MASK_PER    >> 32)
 288 #define FLAG_MASK_DAT           (PSW_MASK_DAT    >> 32)
 289 #define FLAG_MASK_IO            (PSW_MASK_IO     >> 32)
 290 #define FLAG_MASK_EXT           (PSW_MASK_EXT    >> 32)
 291 #define FLAG_MASK_KEY           (PSW_MASK_KEY    >> 32)
 292 #define FLAG_MASK_MCHECK        (PSW_MASK_MCHECK >> 32)
 293 #define FLAG_MASK_WAIT          (PSW_MASK_WAIT   >> 32)
 294 #define FLAG_MASK_PSTATE        (PSW_MASK_PSTATE >> 32)
 295 #define FLAG_MASK_ASC           (PSW_MASK_ASC    >> 32)
 296 #define FLAG_MASK_CC            (PSW_MASK_CC     >> 32)
 297 #define FLAG_MASK_PM            (PSW_MASK_PM     >> 32)
 298 #define FLAG_MASK_64            (PSW_MASK_64     >> 32)
 299 #define FLAG_MASK_32            0x00001000
 300
 301 /* Control register 0 bits */
 302 #define CR0_LOWPROT             0x0000000010000000ULL
 303 #define CR0_EDAT                0x0000000000800000ULL
 304
 305 /* MMU */
 306 #define MMU_PRIMARY_IDX         0
 307 #define MMU_SECONDARY_IDX       1
 308 #define MMU_HOME_IDX            2
 309
 310 static inline int cpu_mmu_index (CPUS390XState *env, bool ifetch)
 311 {
 312     switch (env->psw.mask & PSW_MASK_ASC) {
 313     case PSW_ASC_PRIMARY:
 314         return MMU_PRIMARY_IDX;
 315     case PSW_ASC_SECONDARY:
 316         return MMU_SECONDARY_IDX;
 317     case PSW_ASC_HOME:
 318         return MMU_HOME_IDX;
 319     case PSW_ASC_ACCREG:
 320         /* Fallthrough: access register mode is not yet supported */
 321     default:
 322         abort();
 323     }
 324 }
 325
 326 static inline uint64_t cpu_mmu_idx_to_asc(int mmu_idx)
 327 {
 328     switch (mmu_idx) {
 329     case MMU_PRIMARY_IDX:
 330         return PSW_ASC_PRIMARY;
 331     case MMU_SECONDARY_IDX:
 332         return PSW_ASC_SECONDARY;
 333     case MMU_HOME_IDX:
 334         return PSW_ASC_HOME;
 335     default:
 336         abort();
 337     }
 338 }
 339
 340 static inline void cpu_get_tb_cpu_state(CPUS390XState* env, target_ulong *pc,
 341                                         target_ulong *cs_base, int *flags)
 342 {
 343     *pc = env->psw.addr;
 344     *cs_base = 0;
 345     *flags = ((env->psw.mask >> 32) & ~FLAG_MASK_CC) |
 346              ((env->psw.mask & PSW_MASK_32) ? FLAG_MASK_32 : 0);
 347 }
 348
 349 /* While the PoO talks about ILC (a number between 1-3) what is actually
 350    stored in LowCore is shifted left one bit (an even between 2-6).  As
 351    this is the actual length of the insn and therefore more useful, that
 352    is what we want to pass around and manipulate.  To make sure that we
 353    have applied this distinction universally, rename the "ILC" to "ILEN".  */
 354 static inline int get_ilen(uint8_t opc)
 355 {
 356     switch (opc >> 6) {
 357     case 0:
 358         return 2;
 359     case 1:
 360     case 2:
 361         return 4;
 362     default:
 363         return 6;
 364     }
 365 }
 366
 367 /* PER bits from control register 9 */
 368 #define PER_CR9_EVENT_BRANCH           0x80000000
 369 #define PER_CR9_EVENT_IFETCH           0x40000000
 370 #define PER_CR9_EVENT_STORE            0x20000000
 371 #define PER_CR9_EVENT_STORE_REAL       0x08000000
 372 #define PER_CR9_EVENT_NULLIFICATION    0x01000000
 373 #define PER_CR9_CONTROL_BRANCH_ADDRESS 0x00800000
 374 #define PER_CR9_CONTROL_ALTERATION     0x00200000
 375
 376 /* PER bits from the PER CODE/ATMID/AI in lowcore */
 377 #define PER_CODE_EVENT_BRANCH          0x8000
 378 #define PER_CODE_EVENT_IFETCH          0x4000
 379 #define PER_CODE_EVENT_STORE           0x2000
 380 #define PER_CODE_EVENT_STORE_REAL      0x0800
 381 #define PER_CODE_EVENT_NULLIFICATION   0x0100
 382
 383 /* Compute the ATMID field that is stored in the per_perc_atmid lowcore
 384    entry when a PER exception is triggered.  */
 385 static inline uint8_t get_per_atmid(CPUS390XState *env)
 386 {
 387     return ((env->psw.mask & PSW_MASK_64) ?      (1 << 7) : 0) |
 388            (                                     (1 << 6)    ) |
 389            ((env->psw.mask & PSW_MASK_32) ?      (1 << 5) : 0) |
 390            ((env->psw.mask & PSW_MASK_DAT)?      (1 << 4) : 0) |
 391            ((env->psw.mask & PSW_ASC_SECONDARY)? (1 << 3) : 0) |
 392            ((env->psw.mask & PSW_ASC_ACCREG)?    (1 << 2) : 0);
 393 }
 394
 395 /* Check if an address is within the PER starting address and the PER
 396    ending address.  The address range might loop.  */
 397 static inline bool get_per_in_range(CPUS390XState *env, uint64_t addr)
 398 {
 399     if (env->cregs[10] <= env->cregs[11]) {
 400         return env->cregs[10] <= addr && addr <= env->cregs[11];
 401     } else {
 402         return env->cregs[10] <= addr || addr <= env->cregs[11];
 403     }
 404 }
 405
 406 #ifndef CONFIG_USER_ONLY
 407 /* In several cases of runtime exceptions, we havn't recorded the true
 408    instruction length.  Use these codes when raising exceptions in order
 409    to re-compute the length by examining the insn in memory.  */
 410 #define ILEN_LATER       0x20
 411 #define ILEN_LATER_INC   0x21
 412 void trigger_pgm_exception(CPUS390XState *env, uint32_t code, uint32_t ilen);
 413 #endif
 414
 415 S390CPU *cpu_s390x_init(const char *cpu_model);
 416 S390CPU *s390x_new_cpu(const char *cpu_model, int64_t id, Error **errp);
 417 S390CPU *cpu_s390x_create(const char *cpu_model, Error **errp);
 418 void s390x_translate_init(void);
 419 int cpu_s390x_exec(CPUState *cpu);
 420
 421 /* you can call this signal handler from your SIGBUS and SIGSEGV
 422    signal handlers to inform the virtual CPU of exceptions. non zero
 423    is returned if the signal was handled by the virtual CPU.  */
 424 int cpu_s390x_signal_handler(int host_signum, void *pinfo,
 425                            void *puc);
 426 int s390_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
 427                               int mmu_idx);
 428
 429 #include "ioinst.h"
 430
 431
 432 #ifndef CONFIG_USER_ONLY
 433 void do_restart_interrupt(CPUS390XState *env);
 434
 435 static inline hwaddr decode_basedisp_s(CPUS390XState *env, uint32_t ipb,
 436                                        uint8_t *ar)
 437 {
 438     hwaddr addr = 0;
 439     uint8_t reg;
 440
 441     reg = ipb >> 28;
 442     if (reg > 0) {
 443         addr = env->regs[reg];
 444     }
 445     addr += (ipb >> 16) & 0xfff;
 446     if (ar) {
 447         *ar = reg;
 448     }
 449
 450     return addr;
 451 }
 452
 453 /* Base/displacement are at the same locations. */
 454 #define decode_basedisp_rs decode_basedisp_s
 455
 456 /* helper functions for run_on_cpu() */
 457 static inline void s390_do_cpu_reset(void *arg)
 458 {
 459     CPUState *cs = arg;
 460     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 461
 462     scc->cpu_reset(cs);
 463 }
 464 static inline void s390_do_cpu_full_reset(void *arg)
 465 {
 466     CPUState *cs = arg;
 467
 468     cpu_reset(cs);
 469 }
 470
 471 void s390x_tod_timer(void *opaque);
 472 void s390x_cpu_timer(void *opaque);
 473
 474 int s390_virtio_hypercall(CPUS390XState *env);
 475
 476 #ifdef CONFIG_KVM
 477 void kvm_s390_service_interrupt(uint32_t parm);
 478 void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq);
 479 void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq);
 480 int kvm_s390_inject_flic(struct kvm_s390_irq *irq);
 481 void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code);
 482 int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
 483                     int len, bool is_write);
 484 int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_clock);
 485 int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_clock);
 486 #else
 487 static inline void kvm_s390_service_interrupt(uint32_t parm)
 488 {
 489 }
 490 static inline int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
 491 {
 492     return -ENOSYS;
 493 }
 494 static inline int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
 495 {
 496     return -ENOSYS;
 497 }
 498 static inline int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar,
 499                                   void *hostbuf, int len, bool is_write)
 500 {
 501     return -ENOSYS;
 502 }
 503 static inline void kvm_s390_access_exception(S390CPU *cpu, uint16_t code,
 504                                              uint64_t te_code)
 505 {
 506 }
 507 #endif
 508
 509 static inline int s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
 510 {
 511     if (kvm_enabled()) {
 512         return kvm_s390_get_clock(tod_high, tod_low);
 513     }
 514     /* Fixme TCG */
 515     *tod_high = 0;
 516     *tod_low = 0;
 517     return 0;
 518 }
 519
 520 static inline int s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
 521 {
 522     if (kvm_enabled()) {
 523         return kvm_s390_set_clock(tod_high, tod_low);
 524     }
 525     /* Fixme TCG */
 526     return 0;
 527 }
 528
 529 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
 530 unsigned int s390_cpu_halt(S390CPU *cpu);
 531 void s390_cpu_unhalt(S390CPU *cpu);
 532 unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu);
 533 static inline uint8_t s390_cpu_get_state(S390CPU *cpu)
 534 {
 535     return cpu->env.cpu_state;
 536 }
 537
 538 void gtod_save(QEMUFile *f, void *opaque);
 539 int gtod_load(QEMUFile *f, void *opaque, int version_id);
 540
 541 /* service interrupts are floating therefore we must not pass an cpustate */
 542 void s390_sclp_extint(uint32_t parm);
 543
 544 #else
 545 static inline unsigned int s390_cpu_halt(S390CPU *cpu)
 546 {
 547     return 0;
 548 }
 549
 550 static inline void s390_cpu_unhalt(S390CPU *cpu)
 551 {
 552 }
 553
 554 static inline unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
 555 {
 556     return 0;
 557 }
 558 #endif
 559 void cpu_lock(void);
 560 void cpu_unlock(void);
 561
 562 typedef struct SubchDev SubchDev;
 563
 564 #ifndef CONFIG_USER_ONLY
 565 extern void subsystem_reset(void);
 566 SubchDev *css_find_subch(uint8_t m, uint8_t cssid, uint8_t ssid,
 567                          uint16_t schid);
 568 bool css_subch_visible(SubchDev *sch);
 569 void css_conditional_io_interrupt(SubchDev *sch);
 570 int css_do_stsch(SubchDev *sch, SCHIB *schib);
 571 bool css_schid_final(int m, uint8_t cssid, uint8_t ssid, uint16_t schid);
 572 int css_do_msch(SubchDev *sch, const SCHIB *schib);
 573 int css_do_xsch(SubchDev *sch);
 574 int css_do_csch(SubchDev *sch);
 575 int css_do_hsch(SubchDev *sch);
 576 int css_do_ssch(SubchDev *sch, ORB *orb);
 577 int css_do_tsch_get_irb(SubchDev *sch, IRB *irb, int *irb_len);
 578 void css_do_tsch_update_subch(SubchDev *sch);
 579 int css_do_stcrw(CRW *crw);
 580 void css_undo_stcrw(CRW *crw);
 581 int css_do_tpi(IOIntCode *int_code, int lowcore);
 582 int css_collect_chp_desc(int m, uint8_t cssid, uint8_t f_chpid, uint8_t l_chpid,
 583                          int rfmt, void *buf);
 584 void css_do_schm(uint8_t mbk, int update, int dct, uint64_t mbo);
 585 int css_enable_mcsse(void);
 586 int css_enable_mss(void);
 587 int css_do_rsch(SubchDev *sch);
 588 int css_do_rchp(uint8_t cssid, uint8_t chpid);
 589 bool css_present(uint8_t cssid);
 590 #endif
 591
 592 #define cpu_init(model) CPU(cpu_s390x_init(model))
 593 #define cpu_exec cpu_s390x_exec
 594 #define cpu_signal_handler cpu_s390x_signal_handler
 595
 596 void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf);
 597 #define cpu_list s390_cpu_list
 598
 599 #include "exec/exec-all.h"
 600
 601 #define EXCP_EXT 1 /* external interrupt */
 602 #define EXCP_SVC 2 /* supervisor call (syscall) */
 603 #define EXCP_PGM 3 /* program interruption */
 604 #define EXCP_IO  7 /* I/O interrupt */
 605 #define EXCP_MCHK 8 /* machine check */
 606
 607 #define INTERRUPT_EXT        (1 << 0)
 608 #define INTERRUPT_TOD        (1 << 1)
 609 #define INTERRUPT_CPUTIMER   (1 << 2)
 610 #define INTERRUPT_IO         (1 << 3)
 611 #define INTERRUPT_MCHK       (1 << 4)
 612
 613 /* Program Status Word.  */
 614 #define S390_PSWM_REGNUM 0
 615 #define S390_PSWA_REGNUM 1
 616 /* General Purpose Registers.  */
 617 #define S390_R0_REGNUM 2
 618 #define S390_R1_REGNUM 3
 619 #define S390_R2_REGNUM 4
 620 #define S390_R3_REGNUM 5
 621 #define S390_R4_REGNUM 6
 622 #define S390_R5_REGNUM 7
 623 #define S390_R6_REGNUM 8
 624 #define S390_R7_REGNUM 9
 625 #define S390_R8_REGNUM 10
 626 #define S390_R9_REGNUM 11
 627 #define S390_R10_REGNUM 12
 628 #define S390_R11_REGNUM 13
 629 #define S390_R12_REGNUM 14
 630 #define S390_R13_REGNUM 15
 631 #define S390_R14_REGNUM 16
 632 #define S390_R15_REGNUM 17
 633 /* Total Core Registers. */
 634 #define S390_NUM_CORE_REGS 18
 635
 636 /* CC optimization */
 637
 638 enum cc_op {
 639     CC_OP_CONST0 = 0,           /* CC is 0 */
 640     CC_OP_CONST1,               /* CC is 1 */
 641     CC_OP_CONST2,               /* CC is 2 */
 642     CC_OP_CONST3,               /* CC is 3 */
 643
 644     CC_OP_DYNAMIC,              /* CC calculation defined by env->cc_op */
 645     CC_OP_STATIC,               /* CC value is env->cc_op */
 646
 647     CC_OP_NZ,                   /* env->cc_dst != 0 */
 648     CC_OP_LTGT_32,              /* signed less/greater than (32bit) */
 649     CC_OP_LTGT_64,              /* signed less/greater than (64bit) */
 650     CC_OP_LTUGTU_32,            /* unsigned less/greater than (32bit) */
 651     CC_OP_LTUGTU_64,            /* unsigned less/greater than (64bit) */
 652     CC_OP_LTGT0_32,             /* signed less/greater than 0 (32bit) */
 653     CC_OP_LTGT0_64,             /* signed less/greater than 0 (64bit) */
 654
 655     CC_OP_ADD_64,               /* overflow on add (64bit) */
 656     CC_OP_ADDU_64,              /* overflow on unsigned add (64bit) */
 657     CC_OP_ADDC_64,              /* overflow on unsigned add-carry (64bit) */
 658     CC_OP_SUB_64,               /* overflow on subtraction (64bit) */
 659     CC_OP_SUBU_64,              /* overflow on unsigned subtraction (64bit) */
 660     CC_OP_SUBB_64,              /* overflow on unsigned sub-borrow (64bit) */
 661     CC_OP_ABS_64,               /* sign eval on abs (64bit) */
 662     CC_OP_NABS_64,              /* sign eval on nabs (64bit) */
 663
 664     CC_OP_ADD_32,               /* overflow on add (32bit) */
 665     CC_OP_ADDU_32,              /* overflow on unsigned add (32bit) */
 666     CC_OP_ADDC_32,              /* overflow on unsigned add-carry (32bit) */
 667     CC_OP_SUB_32,               /* overflow on subtraction (32bit) */
 668     CC_OP_SUBU_32,              /* overflow on unsigned subtraction (32bit) */
 669     CC_OP_SUBB_32,              /* overflow on unsigned sub-borrow (32bit) */
 670     CC_OP_ABS_32,               /* sign eval on abs (64bit) */
 671     CC_OP_NABS_32,              /* sign eval on nabs (64bit) */
 672
 673     CC_OP_COMP_32,              /* complement */
 674     CC_OP_COMP_64,              /* complement */
 675
 676     CC_OP_TM_32,                /* test under mask (32bit) */
 677     CC_OP_TM_64,                /* test under mask (64bit) */
 678
 679     CC_OP_NZ_F32,               /* FP dst != 0 (32bit) */
 680     CC_OP_NZ_F64,               /* FP dst != 0 (64bit) */
 681     CC_OP_NZ_F128,              /* FP dst != 0 (128bit) */
 682
 683     CC_OP_ICM,                  /* insert characters under mask */
 684     CC_OP_SLA_32,               /* Calculate shift left signed (32bit) */
 685     CC_OP_SLA_64,               /* Calculate shift left signed (64bit) */
 686     CC_OP_FLOGR,                /* find leftmost one */
 687     CC_OP_MAX
 688 };
 689
 690 static const char *cc_names[] = {
 691     [CC_OP_CONST0]    = "CC_OP_CONST0",
 692     [CC_OP_CONST1]    = "CC_OP_CONST1",
 693     [CC_OP_CONST2]    = "CC_OP_CONST2",
 694     [CC_OP_CONST3]    = "CC_OP_CONST3",
 695     [CC_OP_DYNAMIC]   = "CC_OP_DYNAMIC",
 696     [CC_OP_STATIC]    = "CC_OP_STATIC",
 697     [CC_OP_NZ]        = "CC_OP_NZ",
 698     [CC_OP_LTGT_32]   = "CC_OP_LTGT_32",
 699     [CC_OP_LTGT_64]   = "CC_OP_LTGT_64",
 700     [CC_OP_LTUGTU_32] = "CC_OP_LTUGTU_32",
 701     [CC_OP_LTUGTU_64] = "CC_OP_LTUGTU_64",
 702     [CC_OP_LTGT0_32]  = "CC_OP_LTGT0_32",
 703     [CC_OP_LTGT0_64]  = "CC_OP_LTGT0_64",
 704     [CC_OP_ADD_64]    = "CC_OP_ADD_64",
 705     [CC_OP_ADDU_64]   = "CC_OP_ADDU_64",
 706     [CC_OP_ADDC_64]   = "CC_OP_ADDC_64",
 707     [CC_OP_SUB_64]    = "CC_OP_SUB_64",
 708     [CC_OP_SUBU_64]   = "CC_OP_SUBU_64",
 709     [CC_OP_SUBB_64]   = "CC_OP_SUBB_64",
 710     [CC_OP_ABS_64]    = "CC_OP_ABS_64",
 711     [CC_OP_NABS_64]   = "CC_OP_NABS_64",
 712     [CC_OP_ADD_32]    = "CC_OP_ADD_32",
 713     [CC_OP_ADDU_32]   = "CC_OP_ADDU_32",
 714     [CC_OP_ADDC_32]   = "CC_OP_ADDC_32",
 715     [CC_OP_SUB_32]    = "CC_OP_SUB_32",
 716     [CC_OP_SUBU_32]   = "CC_OP_SUBU_32",
 717     [CC_OP_SUBB_32]   = "CC_OP_SUBB_32",
 718     [CC_OP_ABS_32]    = "CC_OP_ABS_32",
 719     [CC_OP_NABS_32]   = "CC_OP_NABS_32",
 720     [CC_OP_COMP_32]   = "CC_OP_COMP_32",
 721     [CC_OP_COMP_64]   = "CC_OP_COMP_64",
 722     [CC_OP_TM_32]     = "CC_OP_TM_32",
 723     [CC_OP_TM_64]     = "CC_OP_TM_64",
 724     [CC_OP_NZ_F32]    = "CC_OP_NZ_F32",
 725     [CC_OP_NZ_F64]    = "CC_OP_NZ_F64",
 726     [CC_OP_NZ_F128]   = "CC_OP_NZ_F128",
 727     [CC_OP_ICM]       = "CC_OP_ICM",
 728     [CC_OP_SLA_32]    = "CC_OP_SLA_32",
 729     [CC_OP_SLA_64]    = "CC_OP_SLA_64",
 730     [CC_OP_FLOGR]     = "CC_OP_FLOGR",
 731 };
 732
 733 static inline const char *cc_name(int cc_op)
 734 {
 735     return cc_names[cc_op];
 736 }
 737
 738 static inline void setcc(S390CPU *cpu, uint64_t cc)
 739 {
 740     CPUS390XState *env = &cpu->env;
 741
 742     env->psw.mask &= ~(3ull << 44);
 743     env->psw.mask |= (cc & 3) << 44;
 744     env->cc_op = cc;
 745 }
 746
 747 typedef struct LowCore
 748 {
 749     /* prefix area: defined by architecture */
 750     uint32_t        ccw1[2];                  /* 0x000 */
 751     uint32_t        ccw2[4];                  /* 0x008 */
 752     uint8_t         pad1[0x80-0x18];          /* 0x018 */
 753     uint32_t        ext_params;               /* 0x080 */
 754     uint16_t        cpu_addr;                 /* 0x084 */
 755     uint16_t        ext_int_code;             /* 0x086 */
 756     uint16_t        svc_ilen;                 /* 0x088 */
 757     uint16_t        svc_code;                 /* 0x08a */
 758     uint16_t        pgm_ilen;                 /* 0x08c */
 759     uint16_t        pgm_code;                 /* 0x08e */
 760     uint32_t        data_exc_code;            /* 0x090 */
 761     uint16_t        mon_class_num;            /* 0x094 */
 762     uint16_t        per_perc_atmid;           /* 0x096 */
 763     uint64_t        per_address;              /* 0x098 */
 764     uint8_t         exc_access_id;            /* 0x0a0 */
 765     uint8_t         per_access_id;            /* 0x0a1 */
 766     uint8_t         op_access_id;             /* 0x0a2 */
 767     uint8_t         ar_access_id;             /* 0x0a3 */
 768     uint8_t         pad2[0xA8-0xA4];          /* 0x0a4 */
 769     uint64_t        trans_exc_code;           /* 0x0a8 */
 770     uint64_t        monitor_code;             /* 0x0b0 */
 771     uint16_t        subchannel_id;            /* 0x0b8 */
 772     uint16_t        subchannel_nr;            /* 0x0ba */
 773     uint32_t        io_int_parm;              /* 0x0bc */
 774     uint32_t        io_int_word;              /* 0x0c0 */
 775     uint8_t         pad3[0xc8-0xc4];          /* 0x0c4 */
 776     uint32_t        stfl_fac_list;            /* 0x0c8 */
 777     uint8_t         pad4[0xe8-0xcc];          /* 0x0cc */
 778     uint32_t        mcck_interruption_code[2]; /* 0x0e8 */
 779     uint8_t         pad5[0xf4-0xf0];          /* 0x0f0 */
 780     uint32_t        external_damage_code;     /* 0x0f4 */
 781     uint64_t        failing_storage_address;  /* 0x0f8 */
 782     uint8_t         pad6[0x110-0x100];        /* 0x100 */
 783     uint64_t        per_breaking_event_addr;  /* 0x110 */
 784     uint8_t         pad7[0x120-0x118];        /* 0x118 */
 785     PSW             restart_old_psw;          /* 0x120 */
 786     PSW             external_old_psw;         /* 0x130 */
 787     PSW             svc_old_psw;              /* 0x140 */
 788     PSW             program_old_psw;          /* 0x150 */
 789     PSW             mcck_old_psw;             /* 0x160 */
 790     PSW             io_old_psw;               /* 0x170 */
 791     uint8_t         pad8[0x1a0-0x180];        /* 0x180 */
 792     PSW             restart_new_psw;          /* 0x1a0 */
 793     PSW             external_new_psw;         /* 0x1b0 */
 794     PSW             svc_new_psw;              /* 0x1c0 */
 795     PSW             program_new_psw;          /* 0x1d0 */
 796     PSW             mcck_new_psw;             /* 0x1e0 */
 797     PSW             io_new_psw;               /* 0x1f0 */
 798     PSW             return_psw;               /* 0x200 */
 799     uint8_t         irb[64];                  /* 0x210 */
 800     uint64_t        sync_enter_timer;         /* 0x250 */
 801     uint64_t        async_enter_timer;        /* 0x258 */
 802     uint64_t        exit_timer;               /* 0x260 */
 803     uint64_t        last_update_timer;        /* 0x268 */
 804     uint64_t        user_timer;               /* 0x270 */
 805     uint64_t        system_timer;             /* 0x278 */
 806     uint64_t        last_update_clock;        /* 0x280 */
 807     uint64_t        steal_clock;              /* 0x288 */
 808     PSW             return_mcck_psw;          /* 0x290 */
 809     uint8_t         pad9[0xc00-0x2a0];        /* 0x2a0 */
 810     /* System info area */
 811     uint64_t        save_area[16];            /* 0xc00 */
 812     uint8_t         pad10[0xd40-0xc80];       /* 0xc80 */
 813     uint64_t        kernel_stack;             /* 0xd40 */
 814     uint64_t        thread_info;              /* 0xd48 */
 815     uint64_t        async_stack;              /* 0xd50 */
 816     uint64_t        kernel_asce;              /* 0xd58 */
 817     uint64_t        user_asce;                /* 0xd60 */
 818     uint64_t        panic_stack;              /* 0xd68 */
 819     uint64_t        user_exec_asce;           /* 0xd70 */
 820     uint8_t         pad11[0xdc0-0xd78];       /* 0xd78 */
 821
 822     /* SMP info area: defined by DJB */
 823     uint64_t        clock_comparator;         /* 0xdc0 */
 824     uint64_t        ext_call_fast;            /* 0xdc8 */
 825     uint64_t        percpu_offset;            /* 0xdd0 */
 826     uint64_t        current_task;             /* 0xdd8 */
 827     uint32_t        softirq_pending;          /* 0xde0 */
 828     uint32_t        pad_0x0de4;               /* 0xde4 */
 829     uint64_t        int_clock;                /* 0xde8 */
 830     uint8_t         pad12[0xe00-0xdf0];       /* 0xdf0 */
 831
 832     /* 0xe00 is used as indicator for dump tools */
 833     /* whether the kernel died with panic() or not */
 834     uint32_t        panic_magic;              /* 0xe00 */
 835
 836     uint8_t         pad13[0x11b8-0xe04];      /* 0xe04 */
 837
 838     /* 64 bit extparam used for pfault, diag 250 etc  */
 839     uint64_t        ext_params2;               /* 0x11B8 */
 840
 841     uint8_t         pad14[0x1200-0x11C0];      /* 0x11C0 */
 842
 843     /* System info area */
 844
 845     uint64_t        floating_pt_save_area[16]; /* 0x1200 */
 846     uint64_t        gpregs_save_area[16];      /* 0x1280 */
 847     uint32_t        st_status_fixed_logout[4]; /* 0x1300 */
 848     uint8_t         pad15[0x1318-0x1310];      /* 0x1310 */
 849     uint32_t        prefixreg_save_area;       /* 0x1318 */
 850     uint32_t        fpt_creg_save_area;        /* 0x131c */
 851     uint8_t         pad16[0x1324-0x1320];      /* 0x1320 */
 852     uint32_t        tod_progreg_save_area;     /* 0x1324 */
 853     uint32_t        cpu_timer_save_area[2];    /* 0x1328 */
 854     uint32_t        clock_comp_save_area[2];   /* 0x1330 */
 855     uint8_t         pad17[0x1340-0x1338];      /* 0x1338 */
 856     uint32_t        access_regs_save_area[16]; /* 0x1340 */
 857     uint64_t        cregs_save_area[16];       /* 0x1380 */
 858
 859     /* align to the top of the prefix area */
 860
 861     uint8_t         pad18[0x2000-0x1400];      /* 0x1400 */
 862 } QEMU_PACKED LowCore;
 863
 864 /* STSI */
 865 #define STSI_LEVEL_MASK         0x00000000f0000000ULL
 866 #define STSI_LEVEL_CURRENT      0x0000000000000000ULL
 867 #define STSI_LEVEL_1            0x0000000010000000ULL
 868 #define STSI_LEVEL_2            0x0000000020000000ULL
 869 #define STSI_LEVEL_3            0x0000000030000000ULL
 870 #define STSI_R0_RESERVED_MASK   0x000000000fffff00ULL
 871 #define STSI_R0_SEL1_MASK       0x00000000000000ffULL
 872 #define STSI_R1_RESERVED_MASK   0x00000000ffff0000ULL
 873 #define STSI_R1_SEL2_MASK       0x000000000000ffffULL
 874
 875 /* Basic Machine Configuration */
 876 struct sysib_111 {
 877     uint32_t res1[8];
 878     uint8_t  manuf[16];
 879     uint8_t  type[4];
 880     uint8_t  res2[12];
 881     uint8_t  model[16];
 882     uint8_t  sequence[16];
 883     uint8_t  plant[4];
 884     uint8_t  res3[156];
 885 };
 886
 887 /* Basic Machine CPU */
 888 struct sysib_121 {
 889     uint32_t res1[80];
 890     uint8_t  sequence[16];
 891     uint8_t  plant[4];
 892     uint8_t  res2[2];
 893     uint16_t cpu_addr;
 894     uint8_t  res3[152];
 895 };
 896
 897 /* Basic Machine CPUs */
 898 struct sysib_122 {
 899     uint8_t res1[32];
 900     uint32_t capability;
 901     uint16_t total_cpus;
 902     uint16_t active_cpus;
 903     uint16_t standby_cpus;
 904     uint16_t reserved_cpus;
 905     uint16_t adjustments[2026];
 906 };
 907
 908 /* LPAR CPU */
 909 struct sysib_221 {
 910     uint32_t res1[80];
 911     uint8_t  sequence[16];
 912     uint8_t  plant[4];
 913     uint16_t cpu_id;
 914     uint16_t cpu_addr;
 915     uint8_t  res3[152];
 916 };
 917
 918 /* LPAR CPUs */
 919 struct sysib_222 {
 920     uint32_t res1[32];
 921     uint16_t lpar_num;
 922     uint8_t  res2;
 923     uint8_t  lcpuc;
 924     uint16_t total_cpus;
 925     uint16_t conf_cpus;
 926     uint16_t standby_cpus;
 927     uint16_t reserved_cpus;
 928     uint8_t  name[8];
 929     uint32_t caf;
 930     uint8_t  res3[16];
 931     uint16_t dedicated_cpus;
 932     uint16_t shared_cpus;
 933     uint8_t  res4[180];
 934 };
 935
 936 /* VM CPUs */
 937 struct sysib_322 {
 938     uint8_t  res1[31];
 939     uint8_t  count;
 940     struct {
 941         uint8_t  res2[4];
 942         uint16_t total_cpus;
 943         uint16_t conf_cpus;
 944         uint16_t standby_cpus;
 945         uint16_t reserved_cpus;
 946         uint8_t  name[8];
 947         uint32_t caf;
 948         uint8_t  cpi[16];
 949         uint8_t res5[3];
 950         uint8_t ext_name_encoding;
 951         uint32_t res3;
 952         uint8_t uuid[16];
 953     } vm[8];
 954     uint8_t res4[1504];
 955     uint8_t ext_names[8][256];
 956 };
 957
 958 /* MMU defines */
 959 #define _ASCE_ORIGIN            ~0xfffULL /* segment table origin             */
 960 #define _ASCE_SUBSPACE          0x200     /* subspace group control           */
 961 #define _ASCE_PRIVATE_SPACE     0x100     /* private space control            */
 962 #define _ASCE_ALT_EVENT         0x80      /* storage alteration event control */
 963 #define _ASCE_SPACE_SWITCH      0x40      /* space switch event               */
 964 #define _ASCE_REAL_SPACE        0x20      /* real space control               */
 965 #define _ASCE_TYPE_MASK         0x0c      /* asce table type mask             */
 966 #define _ASCE_TYPE_REGION1      0x0c      /* region first table type          */
 967 #define _ASCE_TYPE_REGION2      0x08      /* region second table type         */
 968 #define _ASCE_TYPE_REGION3      0x04      /* region third table type          */
 969 #define _ASCE_TYPE_SEGMENT      0x00      /* segment table type               */
 970 #define _ASCE_TABLE_LENGTH      0x03      /* region table length              */
 971
 972 #define _REGION_ENTRY_ORIGIN    ~0xfffULL /* region/segment table origin      */
 973 #define _REGION_ENTRY_RO        0x200     /* region/segment protection bit    */
 974 #define _REGION_ENTRY_TF        0xc0      /* region/segment table offset      */
 975 #define _REGION_ENTRY_INV       0x20      /* invalid region table entry       */
 976 #define _REGION_ENTRY_TYPE_MASK 0x0c      /* region/segment table type mask   */
 977 #define _REGION_ENTRY_TYPE_R1   0x0c      /* region first table type          */
 978 #define _REGION_ENTRY_TYPE_R2   0x08      /* region second table type         */
 979 #define _REGION_ENTRY_TYPE_R3   0x04      /* region third table type          */
 980 #define _REGION_ENTRY_LENGTH    0x03      /* region third length              */
 981
 982 #define _SEGMENT_ENTRY_ORIGIN   ~0x7ffULL /* segment table origin             */
 983 #define _SEGMENT_ENTRY_FC       0x400     /* format control                   */
 984 #define _SEGMENT_ENTRY_RO       0x200     /* page protection bit              */
 985 #define _SEGMENT_ENTRY_INV      0x20      /* invalid segment table entry      */
 986
 987 #define _PAGE_RO        0x200            /* HW read-only bit  */
 988 #define _PAGE_INVALID   0x400            /* HW invalid bit    */
 989 #define _PAGE_RES0      0x800            /* bit must be zero  */
 990
 991 #define SK_C                    (0x1 << 1)
 992 #define SK_R                    (0x1 << 2)
 993 #define SK_F                    (0x1 << 3)
 994 #define SK_ACC_MASK             (0xf << 4)
 995
 996 /* SIGP order codes */
 997 #define SIGP_SENSE             0x01
 998 #define SIGP_EXTERNAL_CALL     0x02
 999 #define SIGP_EMERGENCY         0x03
1000 #define SIGP_START             0x04
1001 #define SIGP_STOP              0x05
1002 #define SIGP_RESTART           0x06
1003 #define SIGP_STOP_STORE_STATUS 0x09
1004 #define SIGP_INITIAL_CPU_RESET 0x0b
1005 #define SIGP_CPU_RESET         0x0c
1006 #define SIGP_SET_PREFIX        0x0d
1007 #define SIGP_STORE_STATUS_ADDR 0x0e
1008 #define SIGP_SET_ARCH          0x12
1009 #define SIGP_STORE_ADTL_STATUS 0x17
1010
1011 /* SIGP condition codes */
1012 #define SIGP_CC_ORDER_CODE_ACCEPTED 0
1013 #define SIGP_CC_STATUS_STORED       1
1014 #define SIGP_CC_BUSY                2
1015 #define SIGP_CC_NOT_OPERATIONAL     3
1016
1017 /* SIGP status bits */
1018 #define SIGP_STAT_EQUIPMENT_CHECK   0x80000000UL
1019 #define SIGP_STAT_INCORRECT_STATE   0x00000200UL
1020 #define SIGP_STAT_INVALID_PARAMETER 0x00000100UL
1021 #define SIGP_STAT_EXT_CALL_PENDING  0x00000080UL
1022 #define SIGP_STAT_STOPPED           0x00000040UL
1023 #define SIGP_STAT_OPERATOR_INTERV   0x00000020UL
1024 #define SIGP_STAT_CHECK_STOP        0x00000010UL
1025 #define SIGP_STAT_INOPERATIVE       0x00000004UL
1026 #define SIGP_STAT_INVALID_ORDER     0x00000002UL
1027 #define SIGP_STAT_RECEIVER_CHECK    0x00000001UL
1028
1029 /* SIGP SET ARCHITECTURE modes */
1030 #define SIGP_MODE_ESA_S390 0
1031 #define SIGP_MODE_Z_ARCH_TRANS_ALL_PSW 1
1032 #define SIGP_MODE_Z_ARCH_TRANS_CUR_PSW 2
1033
1034 void load_psw(CPUS390XState *env, uint64_t mask, uint64_t addr);
1035 int mmu_translate(CPUS390XState *env, target_ulong vaddr, int rw, uint64_t asc,
1036                   target_ulong *raddr, int *flags, bool exc);
1037 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code);
1038 uint32_t calc_cc(CPUS390XState *env, uint32_t cc_op, uint64_t src, uint64_t dst,
1039                  uint64_t vr);
1040 void s390_cpu_recompute_watchpoints(CPUState *cs);
1041
1042 int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
1043                          int len, bool is_write);
1044
1045 #define s390_cpu_virt_mem_read(cpu, laddr, ar, dest, len)    \
1046         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, false)
1047 #define s390_cpu_virt_mem_write(cpu, laddr, ar, dest, len)       \
1048         s390_cpu_virt_mem_rw(cpu, laddr, ar, dest, len, true)
1049 #define s390_cpu_virt_mem_check_write(cpu, laddr, ar, len)   \
1050         s390_cpu_virt_mem_rw(cpu, laddr, ar, NULL, len, true)
1051
1052 /* The value of the TOD clock for 1.1.1970. */
1053 #define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
1054
1055 /* Converts ns to s390's clock format */
1056 static inline uint64_t time2tod(uint64_t ns) {
1057     return (ns << 9) / 125;
1058 }
1059
1060 /* Converts s390's clock format to ns */
1061 static inline uint64_t tod2time(uint64_t t) {
1062     return (t * 125) >> 9;
1063 }
1064
1065 static inline void cpu_inject_ext(S390CPU *cpu, uint32_t code, uint32_t param,
1066                                   uint64_t param64)
1067 {
1068     CPUS390XState *env = &cpu->env;
1069
1070     if (env->ext_index == MAX_EXT_QUEUE - 1) {
1071         /* ugh - can't queue anymore. Let's drop. */
1072         return;
1073     }
1074
1075     env->ext_index++;
1076     assert(env->ext_index < MAX_EXT_QUEUE);
1077
1078     env->ext_queue[env->ext_index].code = code;
1079     env->ext_queue[env->ext_index].param = param;
1080     env->ext_queue[env->ext_index].param64 = param64;
1081
1082     env->pending_int |= INTERRUPT_EXT;
1083     cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
1084 }
1085
1086 static inline void cpu_inject_io(S390CPU *cpu, uint16_t subchannel_id,
1087                                  uint16_t subchannel_number,
1088                                  uint32_t io_int_parm, uint32_t io_int_word)
1089 {
1090     CPUS390XState *env = &cpu->env;
1091     int isc = IO_INT_WORD_ISC(io_int_word);
1092
1093     if (env->io_index[isc] == MAX_IO_QUEUE - 1) {
1094         /* ugh - can't queue anymore. Let's drop. */
1095         return;
1096     }
1097
1098     env->io_index[isc]++;
1099     assert(env->io_index[isc] < MAX_IO_QUEUE);
1100
1101     env->io_queue[env->io_index[isc]][isc].id = subchannel_id;
1102     env->io_queue[env->io_index[isc]][isc].nr = subchannel_number;
1103     env->io_queue[env->io_index[isc]][isc].parm = io_int_parm;
1104     env->io_queue[env->io_index[isc]][isc].word = io_int_word;
1105
1106     env->pending_int |= INTERRUPT_IO;
1107     cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
1108 }
1109
1110 static inline void cpu_inject_crw_mchk(S390CPU *cpu)
1111 {
1112     CPUS390XState *env = &cpu->env;
1113
1114     if (env->mchk_index == MAX_MCHK_QUEUE - 1) {
1115         /* ugh - can't queue anymore. Let's drop. */
1116         return;
1117     }
1118
1119     env->mchk_index++;
1120     assert(env->mchk_index < MAX_MCHK_QUEUE);
1121
1122     env->mchk_queue[env->mchk_index].type = 1;
1123
1124     env->pending_int |= INTERRUPT_MCHK;
1125     cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
1126 }
1127
1128 /* from s390-virtio-ccw */
1129 #define MEM_SECTION_SIZE             0x10000000UL
1130 #define MAX_AVAIL_SLOTS              32
1131
1132 /* fpu_helper.c */
1133 uint32_t set_cc_nz_f32(float32 v);
1134 uint32_t set_cc_nz_f64(float64 v);
1135 uint32_t set_cc_nz_f128(float128 v);
1136
1137 /* misc_helper.c */
1138 #ifndef CONFIG_USER_ONLY
1139 int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3);
1140 void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3);
1141 #endif
1142 void program_interrupt(CPUS390XState *env, uint32_t code, int ilen);
1143 void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp,
1144                                      uintptr_t retaddr);
1145
1146 #ifdef CONFIG_KVM
1147 void kvm_s390_io_interrupt(uint16_t subchannel_id,
1148                            uint16_t subchannel_nr, uint32_t io_int_parm,
1149                            uint32_t io_int_word);
1150 void kvm_s390_crw_mchk(void);
1151 void kvm_s390_enable_css_support(S390CPU *cpu);
1152 int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
1153                                     int vq, bool assign);
1154 int kvm_s390_cpu_restart(S390CPU *cpu);
1155 int kvm_s390_get_memslot_count(KVMState *s);
1156 void kvm_s390_cmma_reset(void);
1157 int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state);
1158 void kvm_s390_reset_vcpu(S390CPU *cpu);
1159 int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit, uint64_t *hw_limit);
1160 void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu);
1161 int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu);
1162 void kvm_s390_crypto_reset(void);
1163 #else
1164 static inline void kvm_s390_io_interrupt(uint16_t subchannel_id,
1165                                         uint16_t subchannel_nr,
1166                                         uint32_t io_int_parm,
1167                                         uint32_t io_int_word)
1168 {
1169 }
1170 static inline void kvm_s390_crw_mchk(void)
1171 {
1172 }
1173 static inline void kvm_s390_enable_css_support(S390CPU *cpu)
1174 {
1175 }
1176 static inline int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier,
1177                                                   uint32_t sch, int vq,
1178                                                   bool assign)
1179 {
1180     return -ENOSYS;
1181 }
1182 static inline int kvm_s390_cpu_restart(S390CPU *cpu)
1183 {
1184     return -ENOSYS;
1185 }
1186 static inline void kvm_s390_cmma_reset(void)
1187 {
1188 }
1189 static inline int kvm_s390_get_memslot_count(KVMState *s)
1190 {
1191   return MAX_AVAIL_SLOTS;
1192 }
1193 static inline int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
1194 {
1195     return -ENOSYS;
1196 }
1197 static inline void kvm_s390_reset_vcpu(S390CPU *cpu)
1198 {
1199 }
1200 static inline int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit,
1201                                          uint64_t *hw_limit)
1202 {
1203     return 0;
1204 }
1205 static inline void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
1206 {
1207 }
1208 static inline int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
1209 {
1210     return 0;
1211 }
1212 static inline void kvm_s390_crypto_reset(void)
1213 {
1214 }
1215 #endif
1216
1217 static inline int s390_set_memory_limit(uint64_t new_limit, uint64_t *hw_limit)
1218 {
1219     if (kvm_enabled()) {
1220         return kvm_s390_set_mem_limit(kvm_state, new_limit, hw_limit);
1221     }
1222     return 0;
1223 }
1224
1225 static inline void s390_cmma_reset(void)
1226 {
1227     if (kvm_enabled()) {
1228         kvm_s390_cmma_reset();
1229     }
1230 }
1231
1232 static inline int s390_cpu_restart(S390CPU *cpu)
1233 {
1234     if (kvm_enabled()) {
1235         return kvm_s390_cpu_restart(cpu);
1236     }
1237     return -ENOSYS;
1238 }
1239
1240 static inline int s390_get_memslot_count(KVMState *s)
1241 {
1242     if (kvm_enabled()) {
1243         return kvm_s390_get_memslot_count(s);
1244     } else {
1245         return MAX_AVAIL_SLOTS;
1246     }
1247 }
1248
1249 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
1250                        uint32_t io_int_parm, uint32_t io_int_word);
1251 void s390_crw_mchk(void);
1252
1253 static inline int s390_assign_subch_ioeventfd(EventNotifier *notifier,
1254                                               uint32_t sch_id, int vq,
1255                                               bool assign)
1256 {
1257     return kvm_s390_assign_subch_ioeventfd(notifier, sch_id, vq, assign);
1258 }
1259
1260 static inline void s390_crypto_reset(void)
1261 {
1262     if (kvm_enabled()) {
1263         kvm_s390_crypto_reset();
1264     }
1265 }
1266
1267 #ifdef CONFIG_KVM
1268 static inline bool vregs_needed(void *opaque)
1269 {
1270     if (kvm_enabled()) {
1271         return kvm_check_extension(kvm_state, KVM_CAP_S390_VECTOR_REGISTERS);
1272     }
1273     return 0;
1274 }
1275 #else
1276 static inline bool vregs_needed(void *opaque)
1277 {
1278     return 0;
1279 }
1280 #endif
1281
1282 /* machine check interruption code */
1283
1284 /* subclasses */
1285 #define MCIC_SC_SD 0x8000000000000000ULL
1286 #define MCIC_SC_PD 0x4000000000000000ULL
1287 #define MCIC_SC_SR 0x2000000000000000ULL
1288 #define MCIC_SC_CD 0x0800000000000000ULL
1289 #define MCIC_SC_ED 0x0400000000000000ULL
1290 #define MCIC_SC_DG 0x0100000000000000ULL
1291 #define MCIC_SC_W  0x0080000000000000ULL
1292 #define MCIC_SC_CP 0x0040000000000000ULL
1293 #define MCIC_SC_SP 0x0020000000000000ULL
1294 #define MCIC_SC_CK 0x0010000000000000ULL
1295
1296 /* subclass modifiers */
1297 #define MCIC_SCM_B  0x0002000000000000ULL
1298 #define MCIC_SCM_DA 0x0000000020000000ULL
1299 #define MCIC_SCM_AP 0x0000000000080000ULL
1300
1301 /* storage errors */
1302 #define MCIC_SE_SE 0x0000800000000000ULL
1303 #define MCIC_SE_SC 0x0000400000000000ULL
1304 #define MCIC_SE_KE 0x0000200000000000ULL
1305 #define MCIC_SE_DS 0x0000100000000000ULL
1306 #define MCIC_SE_IE 0x0000000080000000ULL
1307
1308 /* validity bits */
1309 #define MCIC_VB_WP 0x0000080000000000ULL
1310 #define MCIC_VB_MS 0x0000040000000000ULL
1311 #define MCIC_VB_PM 0x0000020000000000ULL
1312 #define MCIC_VB_IA 0x0000010000000000ULL
1313 #define MCIC_VB_FA 0x0000008000000000ULL
1314 #define MCIC_VB_VR 0x0000004000000000ULL
1315 #define MCIC_VB_EC 0x0000002000000000ULL
1316 #define MCIC_VB_FP 0x0000001000000000ULL
1317 #define MCIC_VB_GR 0x0000000800000000ULL
1318 #define MCIC_VB_CR 0x0000000400000000ULL
1319 #define MCIC_VB_ST 0x0000000100000000ULL
1320 #define MCIC_VB_AR 0x0000000040000000ULL
1321 #define MCIC_VB_PR 0x0000000000200000ULL
1322 #define MCIC_VB_FC 0x0000000000100000ULL
1323 #define MCIC_VB_CT 0x0000000000020000ULL
1324 #define MCIC_VB_CC 0x0000000000010000ULL
1325
1326 #endif