kernel/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/isc.h>
  26
  27 #define KVM_MAX_VCPUS 64
  28 #define KVM_USER_MEM_SLOTS 32
  29
  30 /*
  31  * These seem to be used for allocating ->chip in the routing table,
  32  * which we don't use. 4096 is an out-of-thin-air value. If we need
  33  * to look at ->chip later on, we'll need to revisit this.
  34  */
  35 #define KVM_NR_IRQCHIPS 1
  36 #define KVM_IRQCHIP_NUM_PINS 4096
  37
  38 #define SIGP_CTRL_C             0x80
  39 #define SIGP_CTRL_SCN_MASK      0x3f
  40
  41 struct sca_entry {
  42         __u8    reserved0;
  43         __u8    sigp_ctrl;
  44         __u16   reserved[3];
  45         __u64   sda;
  46         __u64   reserved2[2];
  47 } __attribute__((packed));
  48
  49 union ipte_control {
  50         unsigned long val;
  51         struct {
  52                 unsigned long k  : 1;
  53                 unsigned long kh : 31;
  54                 unsigned long kg : 32;
  55         };
  56 };
  57
  58 struct sca_block {
  59         union ipte_control ipte_control;
  60         __u64   reserved[5];
  61         __u64   mcn;
  62         __u64   reserved2;
  63         struct sca_entry cpu[64];
  64 } __attribute__((packed));
  65
  66 #define CPUSTAT_STOPPED    0x80000000
  67 #define CPUSTAT_WAIT       0x10000000
  68 #define CPUSTAT_ECALL_PEND 0x08000000
  69 #define CPUSTAT_STOP_INT   0x04000000
  70 #define CPUSTAT_IO_INT     0x02000000
  71 #define CPUSTAT_EXT_INT    0x01000000
  72 #define CPUSTAT_RUNNING    0x00800000
  73 #define CPUSTAT_RETAINED   0x00400000
  74 #define CPUSTAT_TIMING_SUB 0x00020000
  75 #define CPUSTAT_SIE_SUB    0x00010000
  76 #define CPUSTAT_RRF        0x00008000
  77 #define CPUSTAT_SLSV       0x00004000
  78 #define CPUSTAT_SLSR       0x00002000
  79 #define CPUSTAT_ZARCH      0x00000800
  80 #define CPUSTAT_MCDS       0x00000100
  81 #define CPUSTAT_SM         0x00000080
  82 #define CPUSTAT_IBS        0x00000040
  83 #define CPUSTAT_G          0x00000008
  84 #define CPUSTAT_GED        0x00000004
  85 #define CPUSTAT_J          0x00000002
  86 #define CPUSTAT_P          0x00000001
  87
  88 struct kvm_s390_sie_block {
  89         atomic_t cpuflags;              /* 0x0000 */
  90         __u32 : 1;                      /* 0x0004 */
  91         __u32 prefix : 18;
  92         __u32 : 1;
  93         __u32 ibc : 12;
  94         __u8    reserved08[4];          /* 0x0008 */
  95 #define PROG_IN_SIE (1<<0)
  96         __u32   prog0c;                 /* 0x000c */
  97         __u8    reserved10[16];         /* 0x0010 */
  98 #define PROG_BLOCK_SIE 0x00000001
  99         atomic_t prog20;                /* 0x0020 */
 100         __u8    reserved24[4];          /* 0x0024 */
 101         __u64   cputm;                  /* 0x0028 */
 102         __u64   ckc;                    /* 0x0030 */
 103         __u64   epoch;                  /* 0x0038 */
 104         __u8    reserved40[4];          /* 0x0040 */
 105 #define LCTL_CR0        0x8000
 106 #define LCTL_CR6        0x0200
 107 #define LCTL_CR9        0x0040
 108 #define LCTL_CR10       0x0020
 109 #define LCTL_CR11       0x0010
 110 #define LCTL_CR14       0x0002
 111         __u16   lctl;                   /* 0x0044 */
 112         __s16   icpua;                  /* 0x0046 */
 113 #define ICTL_PINT       0x20000000
 114 #define ICTL_LPSW       0x00400000
 115 #define ICTL_STCTL      0x00040000
 116 #define ICTL_ISKE       0x00004000
 117 #define ICTL_SSKE       0x00002000
 118 #define ICTL_RRBE       0x00001000
 119 #define ICTL_TPROT      0x00000200
 120         __u32   ictl;                   /* 0x0048 */
 121         __u32   eca;                    /* 0x004c */
 122 #define ICPT_INST       0x04
 123 #define ICPT_PROGI      0x08
 124 #define ICPT_INSTPROGI  0x0C
 125 #define ICPT_OPEREXC    0x2C
 126 #define ICPT_PARTEXEC   0x38
 127 #define ICPT_IOINST     0x40
 128         __u8    icptcode;               /* 0x0050 */
 129         __u8    icptstatus;             /* 0x0051 */
 130         __u16   ihcpu;                  /* 0x0052 */
 131         __u8    reserved54[2];          /* 0x0054 */
 132         __u16   ipa;                    /* 0x0056 */
 133         __u32   ipb;                    /* 0x0058 */
 134         __u32   scaoh;                  /* 0x005c */
 135         __u8    reserved60;             /* 0x0060 */
 136         __u8    ecb;                    /* 0x0061 */
 137         __u8    ecb2;                   /* 0x0062 */
 138 #define ECB3_AES 0x04
 139 #define ECB3_DEA 0x08
 140         __u8    ecb3;                   /* 0x0063 */
 141         __u32   scaol;                  /* 0x0064 */
 142         __u8    reserved68[4];          /* 0x0068 */
 143         __u32   todpr;                  /* 0x006c */
 144         __u8    reserved70[32];         /* 0x0070 */
 145         psw_t   gpsw;                   /* 0x0090 */
 146         __u64   gg14;                   /* 0x00a0 */
 147         __u64   gg15;                   /* 0x00a8 */
 148         __u8    reservedb0[20];         /* 0x00b0 */
 149         __u16   extcpuaddr;             /* 0x00c4 */
 150         __u16   eic;                    /* 0x00c6 */
 151         __u32   reservedc8;             /* 0x00c8 */
 152         __u16   pgmilc;                 /* 0x00cc */
 153         __u16   iprcc;                  /* 0x00ce */
 154         __u32   dxc;                    /* 0x00d0 */
 155         __u16   mcn;                    /* 0x00d4 */
 156         __u8    perc;                   /* 0x00d6 */
 157         __u8    peratmid;               /* 0x00d7 */
 158         __u64   peraddr;                /* 0x00d8 */
 159         __u8    eai;                    /* 0x00e0 */
 160         __u8    peraid;                 /* 0x00e1 */
 161         __u8    oai;                    /* 0x00e2 */
 162         __u8    armid;                  /* 0x00e3 */
 163         __u8    reservede4[4];          /* 0x00e4 */
 164         __u64   tecmc;                  /* 0x00e8 */
 165         __u8    reservedf0[12];         /* 0x00f0 */
 166 #define CRYCB_FORMAT1 0x00000001
 167 #define CRYCB_FORMAT2 0x00000003
 168         __u32   crycbd;                 /* 0x00fc */
 169         __u64   gcr[16];                /* 0x0100 */
 170         __u64   gbea;                   /* 0x0180 */
 171         __u8    reserved188[24];        /* 0x0188 */
 172         __u32   fac;                    /* 0x01a0 */
 173         __u8    reserved1a4[20];        /* 0x01a4 */
 174         __u64   cbrlo;                  /* 0x01b8 */
 175         __u8    reserved1c0[8];         /* 0x01c0 */
 176         __u32   ecd;                    /* 0x01c8 */
 177         __u8    reserved1cc[18];        /* 0x01cc */
 178         __u64   pp;                     /* 0x01de */
 179         __u8    reserved1e6[2];         /* 0x01e6 */
 180         __u64   itdba;                  /* 0x01e8 */
 181         __u8    reserved1f0[16];        /* 0x01f0 */
 182 } __attribute__((packed));
 183
 184 struct kvm_s390_itdb {
 185         __u8    data[256];
 186 } __packed;
 187
 188 struct kvm_s390_vregs {
 189         __vector128 vrs[32];
 190         __u8    reserved200[512];       /* for future vector expansion */
 191 } __packed;
 192
 193 struct sie_page {
 194         struct kvm_s390_sie_block sie_block;
 195         __u8 reserved200[1024];         /* 0x0200 */
 196         struct kvm_s390_itdb itdb;      /* 0x0600 */
 197         __u8 reserved700[1280];         /* 0x0700 */
 198         struct kvm_s390_vregs vregs;    /* 0x0c00 */
 199 } __packed;
 200
 201 struct kvm_vcpu_stat {
 202         u32 exit_userspace;
 203         u32 exit_null;
 204         u32 exit_external_request;
 205         u32 exit_external_interrupt;
 206         u32 exit_stop_request;
 207         u32 exit_validity;
 208         u32 exit_instruction;
 209         u32 halt_successful_poll;
 210         u32 halt_wakeup;
 211         u32 instruction_lctl;
 212         u32 instruction_lctlg;
 213         u32 instruction_stctl;
 214         u32 instruction_stctg;
 215         u32 exit_program_interruption;
 216         u32 exit_instr_and_program;
 217         u32 deliver_external_call;
 218         u32 deliver_emergency_signal;
 219         u32 deliver_service_signal;
 220         u32 deliver_virtio_interrupt;
 221         u32 deliver_stop_signal;
 222         u32 deliver_prefix_signal;
 223         u32 deliver_restart_signal;
 224         u32 deliver_program_int;
 225         u32 deliver_io_int;
 226         u32 exit_wait_state;
 227         u32 instruction_pfmf;
 228         u32 instruction_stidp;
 229         u32 instruction_spx;
 230         u32 instruction_stpx;
 231         u32 instruction_stap;
 232         u32 instruction_storage_key;
 233         u32 instruction_ipte_interlock;
 234         u32 instruction_stsch;
 235         u32 instruction_chsc;
 236         u32 instruction_stsi;
 237         u32 instruction_stfl;
 238         u32 instruction_tprot;
 239         u32 instruction_essa;
 240         u32 instruction_sigp_sense;
 241         u32 instruction_sigp_sense_running;
 242         u32 instruction_sigp_external_call;
 243         u32 instruction_sigp_emergency;
 244         u32 instruction_sigp_cond_emergency;
 245         u32 instruction_sigp_start;
 246         u32 instruction_sigp_stop;
 247         u32 instruction_sigp_stop_store_status;
 248         u32 instruction_sigp_store_status;
 249         u32 instruction_sigp_store_adtl_status;
 250         u32 instruction_sigp_arch;
 251         u32 instruction_sigp_prefix;
 252         u32 instruction_sigp_restart;
 253         u32 instruction_sigp_init_cpu_reset;
 254         u32 instruction_sigp_cpu_reset;
 255         u32 instruction_sigp_unknown;
 256         u32 diagnose_10;
 257         u32 diagnose_44;
 258         u32 diagnose_9c;
 259 };
 260
 261 #define PGM_OPERATION                   0x01
 262 #define PGM_PRIVILEGED_OP               0x02
 263 #define PGM_EXECUTE                     0x03
 264 #define PGM_PROTECTION                  0x04
 265 #define PGM_ADDRESSING                  0x05
 266 #define PGM_SPECIFICATION               0x06
 267 #define PGM_DATA                        0x07
 268 #define PGM_FIXED_POINT_OVERFLOW        0x08
 269 #define PGM_FIXED_POINT_DIVIDE          0x09
 270 #define PGM_DECIMAL_OVERFLOW            0x0a
 271 #define PGM_DECIMAL_DIVIDE              0x0b
 272 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 273 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 274 #define PGM_HFP_SIGNIFICANCE            0x0e
 275 #define PGM_HFP_DIVIDE                  0x0f
 276 #define PGM_SEGMENT_TRANSLATION         0x10
 277 #define PGM_PAGE_TRANSLATION            0x11
 278 #define PGM_TRANSLATION_SPEC            0x12
 279 #define PGM_SPECIAL_OPERATION           0x13
 280 #define PGM_OPERAND                     0x15
 281 #define PGM_TRACE_TABEL                 0x16
 282 #define PGM_VECTOR_PROCESSING           0x1b
 283 #define PGM_SPACE_SWITCH                0x1c
 284 #define PGM_HFP_SQUARE_ROOT             0x1d
 285 #define PGM_PC_TRANSLATION_SPEC         0x1f
 286 #define PGM_AFX_TRANSLATION             0x20
 287 #define PGM_ASX_TRANSLATION             0x21
 288 #define PGM_LX_TRANSLATION              0x22
 289 #define PGM_EX_TRANSLATION              0x23
 290 #define PGM_PRIMARY_AUTHORITY           0x24
 291 #define PGM_SECONDARY_AUTHORITY         0x25
 292 #define PGM_LFX_TRANSLATION             0x26
 293 #define PGM_LSX_TRANSLATION             0x27
 294 #define PGM_ALET_SPECIFICATION          0x28
 295 #define PGM_ALEN_TRANSLATION            0x29
 296 #define PGM_ALE_SEQUENCE                0x2a
 297 #define PGM_ASTE_VALIDITY               0x2b
 298 #define PGM_ASTE_SEQUENCE               0x2c
 299 #define PGM_EXTENDED_AUTHORITY          0x2d
 300 #define PGM_LSTE_SEQUENCE               0x2e
 301 #define PGM_ASTE_INSTANCE               0x2f
 302 #define PGM_STACK_FULL                  0x30
 303 #define PGM_STACK_EMPTY                 0x31
 304 #define PGM_STACK_SPECIFICATION         0x32
 305 #define PGM_STACK_TYPE                  0x33
 306 #define PGM_STACK_OPERATION             0x34
 307 #define PGM_ASCE_TYPE                   0x38
 308 #define PGM_REGION_FIRST_TRANS          0x39
 309 #define PGM_REGION_SECOND_TRANS         0x3a
 310 #define PGM_REGION_THIRD_TRANS          0x3b
 311 #define PGM_MONITOR                     0x40
 312 #define PGM_PER                         0x80
 313 #define PGM_CRYPTO_OPERATION            0x119
 314
 315 /* irq types in order of priority */
 316 enum irq_types {
 317         IRQ_PEND_MCHK_EX = 0,
 318         IRQ_PEND_SVC,
 319         IRQ_PEND_PROG,
 320         IRQ_PEND_MCHK_REP,
 321         IRQ_PEND_EXT_IRQ_KEY,
 322         IRQ_PEND_EXT_MALFUNC,
 323         IRQ_PEND_EXT_EMERGENCY,
 324         IRQ_PEND_EXT_EXTERNAL,
 325         IRQ_PEND_EXT_CLOCK_COMP,
 326         IRQ_PEND_EXT_CPU_TIMER,
 327         IRQ_PEND_EXT_TIMING,
 328         IRQ_PEND_EXT_SERVICE,
 329         IRQ_PEND_EXT_HOST,
 330         IRQ_PEND_PFAULT_INIT,
 331         IRQ_PEND_PFAULT_DONE,
 332         IRQ_PEND_VIRTIO,
 333         IRQ_PEND_IO_ISC_0,
 334         IRQ_PEND_IO_ISC_1,
 335         IRQ_PEND_IO_ISC_2,
 336         IRQ_PEND_IO_ISC_3,
 337         IRQ_PEND_IO_ISC_4,
 338         IRQ_PEND_IO_ISC_5,
 339         IRQ_PEND_IO_ISC_6,
 340         IRQ_PEND_IO_ISC_7,
 341         IRQ_PEND_SIGP_STOP,
 342         IRQ_PEND_RESTART,
 343         IRQ_PEND_SET_PREFIX,
 344         IRQ_PEND_COUNT
 345 };
 346
 347 /* We have 2M for virtio device descriptor pages. Smallest amount of
 348  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 349  */
 350 #define KVM_S390_MAX_VIRTIO_IRQS 87381
 351
 352 /*
 353  * Repressible (non-floating) machine check interrupts
 354  * subclass bits in MCIC
 355  */
 356 #define MCHK_EXTD_BIT 58
 357 #define MCHK_DEGR_BIT 56
 358 #define MCHK_WARN_BIT 55
 359 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 360                        (1UL << MCHK_EXTD_BIT) | \
 361                        (1UL << MCHK_WARN_BIT))
 362
 363 /* Exigent machine check interrupts subclass bits in MCIC */
 364 #define MCHK_SD_BIT 63
 365 #define MCHK_PD_BIT 62
 366 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 367
 368 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 369                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 370                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 371                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 372                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 373                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 374                            (1UL << IRQ_PEND_EXT_TIMING)     | \
 375                            (1UL << IRQ_PEND_EXT_HOST)       | \
 376                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
 377                            (1UL << IRQ_PEND_VIRTIO)         | \
 378                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
 379                            (1UL << IRQ_PEND_PFAULT_DONE))
 380
 381 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 382                           (1UL << IRQ_PEND_IO_ISC_1) | \
 383                           (1UL << IRQ_PEND_IO_ISC_2) | \
 384                           (1UL << IRQ_PEND_IO_ISC_3) | \
 385                           (1UL << IRQ_PEND_IO_ISC_4) | \
 386                           (1UL << IRQ_PEND_IO_ISC_5) | \
 387                           (1UL << IRQ_PEND_IO_ISC_6) | \
 388                           (1UL << IRQ_PEND_IO_ISC_7))
 389
 390 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 391                             (1UL << IRQ_PEND_MCHK_EX))
 392
 393 struct kvm_s390_interrupt_info {
 394         struct list_head list;
 395         u64     type;
 396         union {
 397                 struct kvm_s390_io_info io;
 398                 struct kvm_s390_ext_info ext;
 399                 struct kvm_s390_pgm_info pgm;
 400                 struct kvm_s390_emerg_info emerg;
 401                 struct kvm_s390_extcall_info extcall;
 402                 struct kvm_s390_prefix_info prefix;
 403                 struct kvm_s390_stop_info stop;
 404                 struct kvm_s390_mchk_info mchk;
 405         };
 406 };
 407
 408 struct kvm_s390_irq_payload {
 409         struct kvm_s390_io_info io;
 410         struct kvm_s390_ext_info ext;
 411         struct kvm_s390_pgm_info pgm;
 412         struct kvm_s390_emerg_info emerg;
 413         struct kvm_s390_extcall_info extcall;
 414         struct kvm_s390_prefix_info prefix;
 415         struct kvm_s390_stop_info stop;
 416         struct kvm_s390_mchk_info mchk;
 417 };
 418
 419 struct kvm_s390_local_interrupt {
 420         spinlock_t lock;
 421         struct kvm_s390_float_interrupt *float_int;
 422         struct swait_head *wq;
 423         atomic_t *cpuflags;
 424         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 425         struct kvm_s390_irq_payload irq;
 426         unsigned long pending_irqs;
 427 };
 428
 429 #define FIRQ_LIST_IO_ISC_0 0
 430 #define FIRQ_LIST_IO_ISC_1 1
 431 #define FIRQ_LIST_IO_ISC_2 2
 432 #define FIRQ_LIST_IO_ISC_3 3
 433 #define FIRQ_LIST_IO_ISC_4 4
 434 #define FIRQ_LIST_IO_ISC_5 5
 435 #define FIRQ_LIST_IO_ISC_6 6
 436 #define FIRQ_LIST_IO_ISC_7 7
 437 #define FIRQ_LIST_PFAULT   8
 438 #define FIRQ_LIST_VIRTIO   9
 439 #define FIRQ_LIST_COUNT   10
 440 #define FIRQ_CNTR_IO       0
 441 #define FIRQ_CNTR_SERVICE  1
 442 #define FIRQ_CNTR_VIRTIO   2
 443 #define FIRQ_CNTR_PFAULT   3
 444 #define FIRQ_MAX_COUNT     4
 445
 446 struct kvm_s390_float_interrupt {
 447         unsigned long pending_irqs;
 448         spinlock_t lock;
 449         struct list_head lists[FIRQ_LIST_COUNT];
 450         int counters[FIRQ_MAX_COUNT];
 451         struct kvm_s390_mchk_info mchk;
 452         struct kvm_s390_ext_info srv_signal;
 453         int next_rr_cpu;
 454         unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
 455 };
 456
 457 struct kvm_hw_wp_info_arch {
 458         unsigned long addr;
 459         unsigned long phys_addr;
 460         int len;
 461         char *old_data;
 462 };
 463
 464 struct kvm_hw_bp_info_arch {
 465         unsigned long addr;
 466         int len;
 467 };
 468
 469 /*
 470  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 471  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 472  * arch/s390/include/uapi/asm/kvm.h
 473  */
 474 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 475
 476 #define guestdbg_enabled(vcpu) \
 477                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 478 #define guestdbg_sstep_enabled(vcpu) \
 479                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 480 #define guestdbg_hw_bp_enabled(vcpu) \
 481                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 482 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 483                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 484
 485 struct kvm_guestdbg_info_arch {
 486         unsigned long cr0;
 487         unsigned long cr9;
 488         unsigned long cr10;
 489         unsigned long cr11;
 490         struct kvm_hw_bp_info_arch *hw_bp_info;
 491         struct kvm_hw_wp_info_arch *hw_wp_info;
 492         int nr_hw_bp;
 493         int nr_hw_wp;
 494         unsigned long last_bp;
 495 };
 496
 497 struct kvm_vcpu_arch {
 498         struct kvm_s390_sie_block *sie_block;
 499         s390_fp_regs      host_fpregs;
 500         unsigned int      host_acrs[NUM_ACRS];
 501         s390_fp_regs      guest_fpregs;
 502         struct kvm_s390_vregs   *host_vregs;
 503         struct kvm_s390_local_interrupt local_int;
 504         struct hrtimer    ckc_timer;
 505         struct kvm_s390_pgm_info pgm;
 506         union  {
 507                 struct cpuid    cpu_id;
 508                 u64             stidp_data;
 509         };
 510         struct gmap *gmap;
 511         struct kvm_guestdbg_info_arch guestdbg;
 512         unsigned long pfault_token;
 513         unsigned long pfault_select;
 514         unsigned long pfault_compare;
 515 };
 516
 517 struct kvm_vm_stat {
 518         u32 remote_tlb_flush;
 519 };
 520
 521 struct kvm_arch_memory_slot {
 522 };
 523
 524 struct s390_map_info {
 525         struct list_head list;
 526         __u64 guest_addr;
 527         __u64 addr;
 528         struct page *page;
 529 };
 530
 531 struct s390_io_adapter {
 532         unsigned int id;
 533         int isc;
 534         bool maskable;
 535         bool masked;
 536         bool swap;
 537         struct rw_semaphore maps_lock;
 538         struct list_head maps;
 539         atomic_t nr_maps;
 540 };
 541
 542 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 543 #define MAX_S390_ADAPTER_MAPS 256
 544
 545 /* maximum size of facilities and facility mask is 2k bytes */
 546 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 547 #define S390_ARCH_FAC_LIST_SIZE_U64 \
 548         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 549 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 550 #define S390_ARCH_FAC_MASK_SIZE_U64 \
 551         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 552
 553 struct kvm_s390_fac {
 554         /* facility list requested by guest */
 555         __u64 list[S390_ARCH_FAC_LIST_SIZE_U64];
 556         /* facility mask supported by kvm & hosting machine */
 557         __u64 mask[S390_ARCH_FAC_LIST_SIZE_U64];
 558 };
 559
 560 struct kvm_s390_cpu_model {
 561         struct kvm_s390_fac *fac;
 562         struct cpuid cpu_id;
 563         unsigned short ibc;
 564 };
 565
 566 struct kvm_s390_crypto {
 567         struct kvm_s390_crypto_cb *crycb;
 568         __u32 crycbd;
 569         __u8 aes_kw;
 570         __u8 dea_kw;
 571 };
 572
 573 struct kvm_s390_crypto_cb {
 574         __u8    reserved00[72];                 /* 0x0000 */
 575         __u8    dea_wrapping_key_mask[24];      /* 0x0048 */
 576         __u8    aes_wrapping_key_mask[32];      /* 0x0060 */
 577         __u8    reserved80[128];                /* 0x0080 */
 578 };
 579
 580 struct kvm_arch{
 581         struct sca_block *sca;
 582         debug_info_t *dbf;
 583         struct kvm_s390_float_interrupt float_int;
 584         struct kvm_device *flic;
 585         struct gmap *gmap;
 586         int css_support;
 587         int use_irqchip;
 588         int use_cmma;
 589         int user_cpu_state_ctrl;
 590         int user_sigp;
 591         int user_stsi;
 592         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 593         wait_queue_head_t ipte_wq;
 594         int ipte_lock_count;
 595         struct mutex ipte_mutex;
 596         spinlock_t start_stop_lock;
 597         struct kvm_s390_cpu_model model;
 598         struct kvm_s390_crypto crypto;
 599         u64 epoch;
 600 };
 601
 602 #define KVM_HVA_ERR_BAD         (-1UL)
 603 #define KVM_HVA_ERR_RO_BAD      (-2UL)
 604
 605 static inline bool kvm_is_error_hva(unsigned long addr)
 606 {
 607         return IS_ERR_VALUE(addr);
 608 }
 609
 610 #define ASYNC_PF_PER_VCPU       64
 611 struct kvm_arch_async_pf {
 612         unsigned long pfault_token;
 613 };
 614
 615 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 616
 617 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 618                                struct kvm_async_pf *work);
 619
 620 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 621                                      struct kvm_async_pf *work);
 622
 623 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 624                                  struct kvm_async_pf *work);
 625
 626 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 627 extern char sie_exit;
 628
 629 static inline void kvm_arch_hardware_disable(void) {}
 630 static inline void kvm_arch_check_processor_compat(void *rtn) {}
 631 static inline void kvm_arch_exit(void) {}
 632 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 633 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
 634 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 635 static inline void kvm_arch_free_memslot(struct kvm *kvm,
 636                 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
 637 static inline void kvm_arch_memslots_updated(struct kvm *kvm) {}
 638 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 639 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
 640                 struct kvm_memory_slot *slot) {}
 641
 642 #endif