arch/s390/include/asm/kvm_host.h

   1 /*
   2  * definition for kernel virtual machines on s390
   3  *
   4  * Copyright IBM Corp. 2008, 2009
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License (version 2 only)
   8  * as published by the Free Software Foundation.
   9  *
  10  *    Author(s): Carsten Otte <cotte@de.ibm.com>
  11  */
  12
  13
  14 #ifndef ASM_KVM_HOST_H
  15 #define ASM_KVM_HOST_H
  16
  17 #include <linux/types.h>
  18 #include <linux/hrtimer.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/kvm_types.h>
  21 #include <linux/kvm_host.h>
  22 #include <linux/kvm.h>
  23 #include <asm/debug.h>
  24 #include <asm/cpu.h>
  25 #include <asm/fpu-internal.h>
  26 #include <asm/isc.h>
  27
  28 #define KVM_MAX_VCPUS 64
  29 #define KVM_USER_MEM_SLOTS 32
  30
  31 /*
  32  * These seem to be used for allocating ->chip in the routing table,
  33  * which we don't use. 4096 is an out-of-thin-air value. If we need
  34  * to look at ->chip later on, we'll need to revisit this.
  35  */
  36 #define KVM_NR_IRQCHIPS 1
  37 #define KVM_IRQCHIP_NUM_PINS 4096
  38 #define KVM_HALT_POLL_NS_DEFAULT 0
  39
  40 #define SIGP_CTRL_C             0x80
  41 #define SIGP_CTRL_SCN_MASK      0x3f
  42
  43 struct sca_entry {
  44         __u8    reserved0;
  45         __u8    sigp_ctrl;
  46         __u16   reserved[3];
  47         __u64   sda;
  48         __u64   reserved2[2];
  49 } __attribute__((packed));
  50
  51 union ipte_control {
  52         unsigned long val;
  53         struct {
  54                 unsigned long k  : 1;
  55                 unsigned long kh : 31;
  56                 unsigned long kg : 32;
  57         };
  58 };
  59
  60 struct sca_block {
  61         union ipte_control ipte_control;
  62         __u64   reserved[5];
  63         __u64   mcn;
  64         __u64   reserved2;
  65         struct sca_entry cpu[64];
  66 } __attribute__((packed));
  67
  68 #define CPUSTAT_STOPPED    0x80000000
  69 #define CPUSTAT_WAIT       0x10000000
  70 #define CPUSTAT_ECALL_PEND 0x08000000
  71 #define CPUSTAT_STOP_INT   0x04000000
  72 #define CPUSTAT_IO_INT     0x02000000
  73 #define CPUSTAT_EXT_INT    0x01000000
  74 #define CPUSTAT_RUNNING    0x00800000
  75 #define CPUSTAT_RETAINED   0x00400000
  76 #define CPUSTAT_TIMING_SUB 0x00020000
  77 #define CPUSTAT_SIE_SUB    0x00010000
  78 #define CPUSTAT_RRF        0x00008000
  79 #define CPUSTAT_SLSV       0x00004000
  80 #define CPUSTAT_SLSR       0x00002000
  81 #define CPUSTAT_ZARCH      0x00000800
  82 #define CPUSTAT_MCDS       0x00000100
  83 #define CPUSTAT_SM         0x00000080
  84 #define CPUSTAT_IBS        0x00000040
  85 #define CPUSTAT_GED2       0x00000010
  86 #define CPUSTAT_G          0x00000008
  87 #define CPUSTAT_GED        0x00000004
  88 #define CPUSTAT_J          0x00000002
  89 #define CPUSTAT_P          0x00000001
  90
  91 struct kvm_s390_sie_block {
  92         atomic_t cpuflags;              /* 0x0000 */
  93         __u32 : 1;                      /* 0x0004 */
  94         __u32 prefix : 18;
  95         __u32 : 1;
  96         __u32 ibc : 12;
  97         __u8    reserved08[4];          /* 0x0008 */
  98 #define PROG_IN_SIE (1<<0)
  99         __u32   prog0c;                 /* 0x000c */
 100         __u8    reserved10[16];         /* 0x0010 */
 101 #define PROG_BLOCK_SIE  (1<<0)
 102 #define PROG_REQUEST    (1<<1)
 103         atomic_t prog20;                /* 0x0020 */
 104         __u8    reserved24[4];          /* 0x0024 */
 105         __u64   cputm;                  /* 0x0028 */
 106         __u64   ckc;                    /* 0x0030 */
 107         __u64   epoch;                  /* 0x0038 */
 108         __u8    reserved40[4];          /* 0x0040 */
 109 #define LCTL_CR0        0x8000
 110 #define LCTL_CR6        0x0200
 111 #define LCTL_CR9        0x0040
 112 #define LCTL_CR10       0x0020
 113 #define LCTL_CR11       0x0010
 114 #define LCTL_CR14       0x0002
 115         __u16   lctl;                   /* 0x0044 */
 116         __s16   icpua;                  /* 0x0046 */
 117 #define ICTL_PINT       0x20000000
 118 #define ICTL_LPSW       0x00400000
 119 #define ICTL_STCTL      0x00040000
 120 #define ICTL_ISKE       0x00004000
 121 #define ICTL_SSKE       0x00002000
 122 #define ICTL_RRBE       0x00001000
 123 #define ICTL_TPROT      0x00000200
 124         __u32   ictl;                   /* 0x0048 */
 125         __u32   eca;                    /* 0x004c */
 126 #define ICPT_INST       0x04
 127 #define ICPT_PROGI      0x08
 128 #define ICPT_INSTPROGI  0x0C
 129 #define ICPT_OPEREXC    0x2C
 130 #define ICPT_PARTEXEC   0x38
 131 #define ICPT_IOINST     0x40
 132         __u8    icptcode;               /* 0x0050 */
 133         __u8    icptstatus;             /* 0x0051 */
 134         __u16   ihcpu;                  /* 0x0052 */
 135         __u8    reserved54[2];          /* 0x0054 */
 136         __u16   ipa;                    /* 0x0056 */
 137         __u32   ipb;                    /* 0x0058 */
 138         __u32   scaoh;                  /* 0x005c */
 139         __u8    reserved60;             /* 0x0060 */
 140         __u8    ecb;                    /* 0x0061 */
 141         __u8    ecb2;                   /* 0x0062 */
 142 #define ECB3_AES 0x04
 143 #define ECB3_DEA 0x08
 144         __u8    ecb3;                   /* 0x0063 */
 145         __u32   scaol;                  /* 0x0064 */
 146         __u8    reserved68[4];          /* 0x0068 */
 147         __u32   todpr;                  /* 0x006c */
 148         __u8    reserved70[32];         /* 0x0070 */
 149         psw_t   gpsw;                   /* 0x0090 */
 150         __u64   gg14;                   /* 0x00a0 */
 151         __u64   gg15;                   /* 0x00a8 */
 152         __u8    reservedb0[20];         /* 0x00b0 */
 153         __u16   extcpuaddr;             /* 0x00c4 */
 154         __u16   eic;                    /* 0x00c6 */
 155         __u32   reservedc8;             /* 0x00c8 */
 156         __u16   pgmilc;                 /* 0x00cc */
 157         __u16   iprcc;                  /* 0x00ce */
 158         __u32   dxc;                    /* 0x00d0 */
 159         __u16   mcn;                    /* 0x00d4 */
 160         __u8    perc;                   /* 0x00d6 */
 161         __u8    peratmid;               /* 0x00d7 */
 162         __u64   peraddr;                /* 0x00d8 */
 163         __u8    eai;                    /* 0x00e0 */
 164         __u8    peraid;                 /* 0x00e1 */
 165         __u8    oai;                    /* 0x00e2 */
 166         __u8    armid;                  /* 0x00e3 */
 167         __u8    reservede4[4];          /* 0x00e4 */
 168         __u64   tecmc;                  /* 0x00e8 */
 169         __u8    reservedf0[12];         /* 0x00f0 */
 170 #define CRYCB_FORMAT1 0x00000001
 171 #define CRYCB_FORMAT2 0x00000003
 172         __u32   crycbd;                 /* 0x00fc */
 173         __u64   gcr[16];                /* 0x0100 */
 174         __u64   gbea;                   /* 0x0180 */
 175         __u8    reserved188[24];        /* 0x0188 */
 176         __u32   fac;                    /* 0x01a0 */
 177         __u8    reserved1a4[20];        /* 0x01a4 */
 178         __u64   cbrlo;                  /* 0x01b8 */
 179         __u8    reserved1c0[8];         /* 0x01c0 */
 180         __u32   ecd;                    /* 0x01c8 */
 181         __u8    reserved1cc[18];        /* 0x01cc */
 182         __u64   pp;                     /* 0x01de */
 183         __u8    reserved1e6[2];         /* 0x01e6 */
 184         __u64   itdba;                  /* 0x01e8 */
 185         __u8    reserved1f0[16];        /* 0x01f0 */
 186 } __attribute__((packed));
 187
 188 struct kvm_s390_itdb {
 189         __u8    data[256];
 190 } __packed;
 191
 192 struct kvm_s390_vregs {
 193         __vector128 vrs[32];
 194         __u8    reserved200[512];       /* for future vector expansion */
 195 } __packed;
 196
 197 struct sie_page {
 198         struct kvm_s390_sie_block sie_block;
 199         __u8 reserved200[1024];         /* 0x0200 */
 200         struct kvm_s390_itdb itdb;      /* 0x0600 */
 201         __u8 reserved700[1280];         /* 0x0700 */
 202         struct kvm_s390_vregs vregs;    /* 0x0c00 */
 203 } __packed;
 204
 205 struct kvm_vcpu_stat {
 206         u32 exit_userspace;
 207         u32 exit_null;
 208         u32 exit_external_request;
 209         u32 exit_external_interrupt;
 210         u32 exit_stop_request;
 211         u32 exit_validity;
 212         u32 exit_instruction;
 213         u32 halt_successful_poll;
 214         u32 halt_attempted_poll;
 215         u32 halt_wakeup;
 216         u32 instruction_lctl;
 217         u32 instruction_lctlg;
 218         u32 instruction_stctl;
 219         u32 instruction_stctg;
 220         u32 exit_program_interruption;
 221         u32 exit_instr_and_program;
 222         u32 deliver_external_call;
 223         u32 deliver_emergency_signal;
 224         u32 deliver_service_signal;
 225         u32 deliver_virtio_interrupt;
 226         u32 deliver_stop_signal;
 227         u32 deliver_prefix_signal;
 228         u32 deliver_restart_signal;
 229         u32 deliver_program_int;
 230         u32 deliver_io_int;
 231         u32 exit_wait_state;
 232         u32 instruction_pfmf;
 233         u32 instruction_stidp;
 234         u32 instruction_spx;
 235         u32 instruction_stpx;
 236         u32 instruction_stap;
 237         u32 instruction_storage_key;
 238         u32 instruction_ipte_interlock;
 239         u32 instruction_stsch;
 240         u32 instruction_chsc;
 241         u32 instruction_stsi;
 242         u32 instruction_stfl;
 243         u32 instruction_tprot;
 244         u32 instruction_essa;
 245         u32 instruction_sigp_sense;
 246         u32 instruction_sigp_sense_running;
 247         u32 instruction_sigp_external_call;
 248         u32 instruction_sigp_emergency;
 249         u32 instruction_sigp_cond_emergency;
 250         u32 instruction_sigp_start;
 251         u32 instruction_sigp_stop;
 252         u32 instruction_sigp_stop_store_status;
 253         u32 instruction_sigp_store_status;
 254         u32 instruction_sigp_store_adtl_status;
 255         u32 instruction_sigp_arch;
 256         u32 instruction_sigp_prefix;
 257         u32 instruction_sigp_restart;
 258         u32 instruction_sigp_init_cpu_reset;
 259         u32 instruction_sigp_cpu_reset;
 260         u32 instruction_sigp_unknown;
 261         u32 diagnose_10;
 262         u32 diagnose_44;
 263         u32 diagnose_9c;
 264         u32 diagnose_258;
 265         u32 diagnose_308;
 266         u32 diagnose_500;
 267 };
 268
 269 #define PGM_OPERATION                   0x01
 270 #define PGM_PRIVILEGED_OP               0x02
 271 #define PGM_EXECUTE                     0x03
 272 #define PGM_PROTECTION                  0x04
 273 #define PGM_ADDRESSING                  0x05
 274 #define PGM_SPECIFICATION               0x06
 275 #define PGM_DATA                        0x07
 276 #define PGM_FIXED_POINT_OVERFLOW        0x08
 277 #define PGM_FIXED_POINT_DIVIDE          0x09
 278 #define PGM_DECIMAL_OVERFLOW            0x0a
 279 #define PGM_DECIMAL_DIVIDE              0x0b
 280 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 281 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 282 #define PGM_HFP_SIGNIFICANCE            0x0e
 283 #define PGM_HFP_DIVIDE                  0x0f
 284 #define PGM_SEGMENT_TRANSLATION         0x10
 285 #define PGM_PAGE_TRANSLATION            0x11
 286 #define PGM_TRANSLATION_SPEC            0x12
 287 #define PGM_SPECIAL_OPERATION           0x13
 288 #define PGM_OPERAND                     0x15
 289 #define PGM_TRACE_TABEL                 0x16
 290 #define PGM_VECTOR_PROCESSING           0x1b
 291 #define PGM_SPACE_SWITCH                0x1c
 292 #define PGM_HFP_SQUARE_ROOT             0x1d
 293 #define PGM_PC_TRANSLATION_SPEC         0x1f
 294 #define PGM_AFX_TRANSLATION             0x20
 295 #define PGM_ASX_TRANSLATION             0x21
 296 #define PGM_LX_TRANSLATION              0x22
 297 #define PGM_EX_TRANSLATION              0x23
 298 #define PGM_PRIMARY_AUTHORITY           0x24
 299 #define PGM_SECONDARY_AUTHORITY         0x25
 300 #define PGM_LFX_TRANSLATION             0x26
 301 #define PGM_LSX_TRANSLATION             0x27
 302 #define PGM_ALET_SPECIFICATION          0x28
 303 #define PGM_ALEN_TRANSLATION            0x29
 304 #define PGM_ALE_SEQUENCE                0x2a
 305 #define PGM_ASTE_VALIDITY               0x2b
 306 #define PGM_ASTE_SEQUENCE               0x2c
 307 #define PGM_EXTENDED_AUTHORITY          0x2d
 308 #define PGM_LSTE_SEQUENCE               0x2e
 309 #define PGM_ASTE_INSTANCE               0x2f
 310 #define PGM_STACK_FULL                  0x30
 311 #define PGM_STACK_EMPTY                 0x31
 312 #define PGM_STACK_SPECIFICATION         0x32
 313 #define PGM_STACK_TYPE                  0x33
 314 #define PGM_STACK_OPERATION             0x34
 315 #define PGM_ASCE_TYPE                   0x38
 316 #define PGM_REGION_FIRST_TRANS          0x39
 317 #define PGM_REGION_SECOND_TRANS         0x3a
 318 #define PGM_REGION_THIRD_TRANS          0x3b
 319 #define PGM_MONITOR                     0x40
 320 #define PGM_PER                         0x80
 321 #define PGM_CRYPTO_OPERATION            0x119
 322
 323 /* irq types in order of priority */
 324 enum irq_types {
 325         IRQ_PEND_MCHK_EX = 0,
 326         IRQ_PEND_SVC,
 327         IRQ_PEND_PROG,
 328         IRQ_PEND_MCHK_REP,
 329         IRQ_PEND_EXT_IRQ_KEY,
 330         IRQ_PEND_EXT_MALFUNC,
 331         IRQ_PEND_EXT_EMERGENCY,
 332         IRQ_PEND_EXT_EXTERNAL,
 333         IRQ_PEND_EXT_CLOCK_COMP,
 334         IRQ_PEND_EXT_CPU_TIMER,
 335         IRQ_PEND_EXT_TIMING,
 336         IRQ_PEND_EXT_SERVICE,
 337         IRQ_PEND_EXT_HOST,
 338         IRQ_PEND_PFAULT_INIT,
 339         IRQ_PEND_PFAULT_DONE,
 340         IRQ_PEND_VIRTIO,
 341         IRQ_PEND_IO_ISC_0,
 342         IRQ_PEND_IO_ISC_1,
 343         IRQ_PEND_IO_ISC_2,
 344         IRQ_PEND_IO_ISC_3,
 345         IRQ_PEND_IO_ISC_4,
 346         IRQ_PEND_IO_ISC_5,
 347         IRQ_PEND_IO_ISC_6,
 348         IRQ_PEND_IO_ISC_7,
 349         IRQ_PEND_SIGP_STOP,
 350         IRQ_PEND_RESTART,
 351         IRQ_PEND_SET_PREFIX,
 352         IRQ_PEND_COUNT
 353 };
 354
 355 /* We have 2M for virtio device descriptor pages. Smallest amount of
 356  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 357  */
 358 #define KVM_S390_MAX_VIRTIO_IRQS 87381
 359
 360 /*
 361  * Repressible (non-floating) machine check interrupts
 362  * subclass bits in MCIC
 363  */
 364 #define MCHK_EXTD_BIT 58
 365 #define MCHK_DEGR_BIT 56
 366 #define MCHK_WARN_BIT 55
 367 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 368                        (1UL << MCHK_EXTD_BIT) | \
 369                        (1UL << MCHK_WARN_BIT))
 370
 371 /* Exigent machine check interrupts subclass bits in MCIC */
 372 #define MCHK_SD_BIT 63
 373 #define MCHK_PD_BIT 62
 374 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 375
 376 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 377                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 378                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 379                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 380                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 381                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 382                            (1UL << IRQ_PEND_EXT_TIMING)     | \
 383                            (1UL << IRQ_PEND_EXT_HOST)       | \
 384                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
 385                            (1UL << IRQ_PEND_VIRTIO)         | \
 386                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
 387                            (1UL << IRQ_PEND_PFAULT_DONE))
 388
 389 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 390                           (1UL << IRQ_PEND_IO_ISC_1) | \
 391                           (1UL << IRQ_PEND_IO_ISC_2) | \
 392                           (1UL << IRQ_PEND_IO_ISC_3) | \
 393                           (1UL << IRQ_PEND_IO_ISC_4) | \
 394                           (1UL << IRQ_PEND_IO_ISC_5) | \
 395                           (1UL << IRQ_PEND_IO_ISC_6) | \
 396                           (1UL << IRQ_PEND_IO_ISC_7))
 397
 398 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 399                             (1UL << IRQ_PEND_MCHK_EX))
 400
 401 struct kvm_s390_interrupt_info {
 402         struct list_head list;
 403         u64     type;
 404         union {
 405                 struct kvm_s390_io_info io;
 406                 struct kvm_s390_ext_info ext;
 407                 struct kvm_s390_pgm_info pgm;
 408                 struct kvm_s390_emerg_info emerg;
 409                 struct kvm_s390_extcall_info extcall;
 410                 struct kvm_s390_prefix_info prefix;
 411                 struct kvm_s390_stop_info stop;
 412                 struct kvm_s390_mchk_info mchk;
 413         };
 414 };
 415
 416 struct kvm_s390_irq_payload {
 417         struct kvm_s390_io_info io;
 418         struct kvm_s390_ext_info ext;
 419         struct kvm_s390_pgm_info pgm;
 420         struct kvm_s390_emerg_info emerg;
 421         struct kvm_s390_extcall_info extcall;
 422         struct kvm_s390_prefix_info prefix;
 423         struct kvm_s390_stop_info stop;
 424         struct kvm_s390_mchk_info mchk;
 425 };
 426
 427 struct kvm_s390_local_interrupt {
 428         spinlock_t lock;
 429         struct kvm_s390_float_interrupt *float_int;
 430         wait_queue_head_t *wq;
 431         atomic_t *cpuflags;
 432         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 433         struct kvm_s390_irq_payload irq;
 434         unsigned long pending_irqs;
 435 };
 436
 437 #define FIRQ_LIST_IO_ISC_0 0
 438 #define FIRQ_LIST_IO_ISC_1 1
 439 #define FIRQ_LIST_IO_ISC_2 2
 440 #define FIRQ_LIST_IO_ISC_3 3
 441 #define FIRQ_LIST_IO_ISC_4 4
 442 #define FIRQ_LIST_IO_ISC_5 5
 443 #define FIRQ_LIST_IO_ISC_6 6
 444 #define FIRQ_LIST_IO_ISC_7 7
 445 #define FIRQ_LIST_PFAULT   8
 446 #define FIRQ_LIST_VIRTIO   9
 447 #define FIRQ_LIST_COUNT   10
 448 #define FIRQ_CNTR_IO       0
 449 #define FIRQ_CNTR_SERVICE  1
 450 #define FIRQ_CNTR_VIRTIO   2
 451 #define FIRQ_CNTR_PFAULT   3
 452 #define FIRQ_MAX_COUNT     4
 453
 454 struct kvm_s390_float_interrupt {
 455         unsigned long pending_irqs;
 456         spinlock_t lock;
 457         struct list_head lists[FIRQ_LIST_COUNT];
 458         int counters[FIRQ_MAX_COUNT];
 459         struct kvm_s390_mchk_info mchk;
 460         struct kvm_s390_ext_info srv_signal;
 461         int next_rr_cpu;
 462         unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
 463 };
 464
 465 struct kvm_hw_wp_info_arch {
 466         unsigned long addr;
 467         unsigned long phys_addr;
 468         int len;
 469         char *old_data;
 470 };
 471
 472 struct kvm_hw_bp_info_arch {
 473         unsigned long addr;
 474         int len;
 475 };
 476
 477 /*
 478  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 479  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 480  * arch/s390/include/uapi/asm/kvm.h
 481  */
 482 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 483
 484 #define guestdbg_enabled(vcpu) \
 485                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 486 #define guestdbg_sstep_enabled(vcpu) \
 487                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 488 #define guestdbg_hw_bp_enabled(vcpu) \
 489                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 490 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 491                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 492
 493 struct kvm_guestdbg_info_arch {
 494         unsigned long cr0;
 495         unsigned long cr9;
 496         unsigned long cr10;
 497         unsigned long cr11;
 498         struct kvm_hw_bp_info_arch *hw_bp_info;
 499         struct kvm_hw_wp_info_arch *hw_wp_info;
 500         int nr_hw_bp;
 501         int nr_hw_wp;
 502         unsigned long last_bp;
 503 };
 504
 505 struct kvm_vcpu_arch {
 506         struct kvm_s390_sie_block *sie_block;
 507         unsigned int      host_acrs[NUM_ACRS];
 508         struct fpu        host_fpregs;
 509         struct fpu        guest_fpregs;
 510         struct kvm_s390_local_interrupt local_int;
 511         struct hrtimer    ckc_timer;
 512         struct kvm_s390_pgm_info pgm;
 513         union  {
 514                 struct cpuid    cpu_id;
 515                 u64             stidp_data;
 516         };
 517         struct gmap *gmap;
 518         struct kvm_guestdbg_info_arch guestdbg;
 519         unsigned long pfault_token;
 520         unsigned long pfault_select;
 521         unsigned long pfault_compare;
 522 };
 523
 524 struct kvm_vm_stat {
 525         u32 remote_tlb_flush;
 526 };
 527
 528 struct kvm_arch_memory_slot {
 529 };
 530
 531 struct s390_map_info {
 532         struct list_head list;
 533         __u64 guest_addr;
 534         __u64 addr;
 535         struct page *page;
 536 };
 537
 538 struct s390_io_adapter {
 539         unsigned int id;
 540         int isc;
 541         bool maskable;
 542         bool masked;
 543         bool swap;
 544         struct rw_semaphore maps_lock;
 545         struct list_head maps;
 546         atomic_t nr_maps;
 547 };
 548
 549 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 550 #define MAX_S390_ADAPTER_MAPS 256
 551
 552 /* maximum size of facilities and facility mask is 2k bytes */
 553 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 554 #define S390_ARCH_FAC_LIST_SIZE_U64 \
 555         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 556 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 557 #define S390_ARCH_FAC_MASK_SIZE_U64 \
 558         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 559
 560 struct kvm_s390_fac {
 561         /* facility list requested by guest */
 562         __u64 list[S390_ARCH_FAC_LIST_SIZE_U64];
 563         /* facility mask supported by kvm & hosting machine */
 564         __u64 mask[S390_ARCH_FAC_LIST_SIZE_U64];
 565 };
 566
 567 struct kvm_s390_cpu_model {
 568         struct kvm_s390_fac *fac;
 569         struct cpuid cpu_id;
 570         unsigned short ibc;
 571 };
 572
 573 struct kvm_s390_crypto {
 574         struct kvm_s390_crypto_cb *crycb;
 575         __u32 crycbd;
 576         __u8 aes_kw;
 577         __u8 dea_kw;
 578 };
 579
 580 struct kvm_s390_crypto_cb {
 581         __u8    reserved00[72];                 /* 0x0000 */
 582         __u8    dea_wrapping_key_mask[24];      /* 0x0048 */
 583         __u8    aes_wrapping_key_mask[32];      /* 0x0060 */
 584         __u8    reserved80[128];                /* 0x0080 */
 585 };
 586
 587 struct kvm_arch{
 588         struct sca_block *sca;
 589         debug_info_t *dbf;
 590         struct kvm_s390_float_interrupt float_int;
 591         struct kvm_device *flic;
 592         struct gmap *gmap;
 593         int css_support;
 594         int use_irqchip;
 595         int use_cmma;
 596         int user_cpu_state_ctrl;
 597         int user_sigp;
 598         int user_stsi;
 599         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 600         wait_queue_head_t ipte_wq;
 601         int ipte_lock_count;
 602         struct mutex ipte_mutex;
 603         spinlock_t start_stop_lock;
 604         struct kvm_s390_cpu_model model;
 605         struct kvm_s390_crypto crypto;
 606         u64 epoch;
 607 };
 608
 609 #define KVM_HVA_ERR_BAD         (-1UL)
 610 #define KVM_HVA_ERR_RO_BAD      (-2UL)
 611
 612 static inline bool kvm_is_error_hva(unsigned long addr)
 613 {
 614         return IS_ERR_VALUE(addr);
 615 }
 616
 617 #define ASYNC_PF_PER_VCPU       64
 618 struct kvm_arch_async_pf {
 619         unsigned long pfault_token;
 620 };
 621
 622 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 623
 624 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 625                                struct kvm_async_pf *work);
 626
 627 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 628                                      struct kvm_async_pf *work);
 629
 630 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 631                                  struct kvm_async_pf *work);
 632
 633 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 634 extern char sie_exit;
 635
 636 static inline void kvm_arch_hardware_disable(void) {}
 637 static inline void kvm_arch_check_processor_compat(void *rtn) {}
 638 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 639 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
 640 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 641 static inline void kvm_arch_free_memslot(struct kvm *kvm,
 642                 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
 643 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
 644 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 645 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
 646                 struct kvm_memory_slot *slot) {}
 647
 648 #endif