LXR linux/arch/s390/include/asm/kvm

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * definition for kernel virtual machines on s390
   4 *
   5 * Copyright IBM Corp. 2008, 2018
   6 *
   7 *    Author(s): Carsten Otte <cotte@de.ibm.com>
   8 */
   9
  10
  11#ifndef ASM_KVM_HOST_H
  12#define ASM_KVM_HOST_H
  13
  14#include <linux/types.h>
  15#include <linux/hrtimer.h>
  16#include <linux/interrupt.h>
  17#include <linux/kvm_types.h>
  18#include <linux/kvm_host.h>
  19#include <linux/kvm.h>
  20#include <linux/seqlock.h>
  21#include <linux/module.h>
  22#include <asm/debug.h>
  23#include <asm/cpu.h>
  24#include <asm/fpu/api.h>
  25#include <asm/isc.h>
  26#include <asm/guarded_storage.h>
  27
  28#define KVM_S390_BSCA_CPU_SLOTS 64
  29#define KVM_S390_ESCA_CPU_SLOTS 248
  30#define KVM_MAX_VCPUS 255
  31#define KVM_USER_MEM_SLOTS 32
  32
  33/*
  34 * These seem to be used for allocating ->chip in the routing table,
  35 * which we don't use. 4096 is an out-of-thin-air value. If we need
  36 * to look at ->chip later on, we'll need to revisit this.
  37 */
  38#define KVM_NR_IRQCHIPS 1
  39#define KVM_IRQCHIP_NUM_PINS 4096
  40#define KVM_HALT_POLL_NS_DEFAULT 50000
  41
  42/* s390-specific vcpu->requests bit members */
  43#define KVM_REQ_ENABLE_IBS      KVM_ARCH_REQ(0)
  44#define KVM_REQ_DISABLE_IBS     KVM_ARCH_REQ(1)
  45#define KVM_REQ_ICPT_OPEREXC    KVM_ARCH_REQ(2)
  46#define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
  47#define KVM_REQ_STOP_MIGRATION  KVM_ARCH_REQ(4)
  48#define KVM_REQ_VSIE_RESTART    KVM_ARCH_REQ(5)
  49
  50#define SIGP_CTRL_C             0x80
  51#define SIGP_CTRL_SCN_MASK      0x3f
  52
  53union bsca_sigp_ctrl {
  54        __u8 value;
  55        struct {
  56                __u8 c : 1;
  57                __u8 r : 1;
  58                __u8 scn : 6;
  59        };
  60};
  61
  62union esca_sigp_ctrl {
  63        __u16 value;
  64        struct {
  65                __u8 c : 1;
  66                __u8 reserved: 7;
  67                __u8 scn;
  68        };
  69};
  70
  71struct esca_entry {
  72        union esca_sigp_ctrl sigp_ctrl;
  73        __u16   reserved1[3];
  74        __u64   sda;
  75        __u64   reserved2[6];
  76};
  77
  78struct bsca_entry {
  79        __u8    reserved0;
  80        union bsca_sigp_ctrl    sigp_ctrl;
  81        __u16   reserved[3];
  82        __u64   sda;
  83        __u64   reserved2[2];
  84};
  85
  86union ipte_control {
  87        unsigned long val;
  88        struct {
  89                unsigned long k  : 1;
  90                unsigned long kh : 31;
  91                unsigned long kg : 32;
  92        };
  93};
  94
  95struct bsca_block {
  96        union ipte_control ipte_control;
  97        __u64   reserved[5];
  98        __u64   mcn;
  99        __u64   reserved2;
 100        struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
 101};
 102
 103struct esca_block {
 104        union ipte_control ipte_control;
 105        __u64   reserved1[7];
 106        __u64   mcn[4];
 107        __u64   reserved2[20];
 108        struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
 109};
 110
 111/*
 112 * This struct is used to store some machine check info from lowcore
 113 * for machine checks that happen while the guest is running.
 114 * This info in host's lowcore might be overwritten by a second machine
 115 * check from host when host is in the machine check's high-level handling.
 116 * The size is 24 bytes.
 117 */
 118struct mcck_volatile_info {
 119        __u64 mcic;
 120        __u64 failing_storage_address;
 121        __u32 ext_damage_code;
 122        __u32 reserved;
 123};
 124
 125#define CPUSTAT_STOPPED    0x80000000
 126#define CPUSTAT_WAIT       0x10000000
 127#define CPUSTAT_ECALL_PEND 0x08000000
 128#define CPUSTAT_STOP_INT   0x04000000
 129#define CPUSTAT_IO_INT     0x02000000
 130#define CPUSTAT_EXT_INT    0x01000000
 131#define CPUSTAT_RUNNING    0x00800000
 132#define CPUSTAT_RETAINED   0x00400000
 133#define CPUSTAT_TIMING_SUB 0x00020000
 134#define CPUSTAT_SIE_SUB    0x00010000
 135#define CPUSTAT_RRF        0x00008000
 136#define CPUSTAT_SLSV       0x00004000
 137#define CPUSTAT_SLSR       0x00002000
 138#define CPUSTAT_ZARCH      0x00000800
 139#define CPUSTAT_MCDS       0x00000100
 140#define CPUSTAT_KSS        0x00000200
 141#define CPUSTAT_SM         0x00000080
 142#define CPUSTAT_IBS        0x00000040
 143#define CPUSTAT_GED2       0x00000010
 144#define CPUSTAT_G          0x00000008
 145#define CPUSTAT_GED        0x00000004
 146#define CPUSTAT_J          0x00000002
 147#define CPUSTAT_P          0x00000001
 148
 149struct kvm_s390_sie_block {
 150        atomic_t cpuflags;              /* 0x0000 */
 151        __u32 : 1;                      /* 0x0004 */
 152        __u32 prefix : 18;
 153        __u32 : 1;
 154        __u32 ibc : 12;
 155        __u8    reserved08[4];          /* 0x0008 */
 156#define PROG_IN_SIE (1<<0)
 157        __u32   prog0c;                 /* 0x000c */
 158        __u8    reserved10[16];         /* 0x0010 */
 159#define PROG_BLOCK_SIE  (1<<0)
 160#define PROG_REQUEST    (1<<1)
 161        atomic_t prog20;                /* 0x0020 */
 162        __u8    reserved24[4];          /* 0x0024 */
 163        __u64   cputm;                  /* 0x0028 */
 164        __u64   ckc;                    /* 0x0030 */
 165        __u64   epoch;                  /* 0x0038 */
 166        __u32   svcc;                   /* 0x0040 */
 167#define LCTL_CR0        0x8000
 168#define LCTL_CR6        0x0200
 169#define LCTL_CR9        0x0040
 170#define LCTL_CR10       0x0020
 171#define LCTL_CR11       0x0010
 172#define LCTL_CR14       0x0002
 173        __u16   lctl;                   /* 0x0044 */
 174        __s16   icpua;                  /* 0x0046 */
 175#define ICTL_OPEREXC    0x80000000
 176#define ICTL_PINT       0x20000000
 177#define ICTL_LPSW       0x00400000
 178#define ICTL_STCTL      0x00040000
 179#define ICTL_ISKE       0x00004000
 180#define ICTL_SSKE       0x00002000
 181#define ICTL_RRBE       0x00001000
 182#define ICTL_TPROT      0x00000200
 183        __u32   ictl;                   /* 0x0048 */
 184#define ECA_CEI         0x80000000
 185#define ECA_IB          0x40000000
 186#define ECA_SIGPI       0x10000000
 187#define ECA_MVPGI       0x01000000
 188#define ECA_AIV         0x00200000
 189#define ECA_VX          0x00020000
 190#define ECA_PROTEXCI    0x00002000
 191#define ECA_APIE        0x00000008
 192#define ECA_SII         0x00000001
 193        __u32   eca;                    /* 0x004c */
 194#define ICPT_INST       0x04
 195#define ICPT_PROGI      0x08
 196#define ICPT_INSTPROGI  0x0C
 197#define ICPT_EXTREQ     0x10
 198#define ICPT_EXTINT     0x14
 199#define ICPT_IOREQ      0x18
 200#define ICPT_WAIT       0x1c
 201#define ICPT_VALIDITY   0x20
 202#define ICPT_STOP       0x28
 203#define ICPT_OPEREXC    0x2C
 204#define ICPT_PARTEXEC   0x38
 205#define ICPT_IOINST     0x40
 206#define ICPT_KSS        0x5c
 207        __u8    icptcode;               /* 0x0050 */
 208        __u8    icptstatus;             /* 0x0051 */
 209        __u16   ihcpu;                  /* 0x0052 */
 210        __u8    reserved54[2];          /* 0x0054 */
 211        __u16   ipa;                    /* 0x0056 */
 212        __u32   ipb;                    /* 0x0058 */
 213        __u32   scaoh;                  /* 0x005c */
 214#define FPF_BPBC        0x20
 215        __u8    fpf;                    /* 0x0060 */
 216#define ECB_GS          0x40
 217#define ECB_TE          0x10
 218#define ECB_SRSI        0x04
 219#define ECB_HOSTPROTINT 0x02
 220        __u8    ecb;                    /* 0x0061 */
 221#define ECB2_CMMA       0x80
 222#define ECB2_IEP        0x20
 223#define ECB2_PFMFI      0x08
 224#define ECB2_ESCA       0x04
 225        __u8    ecb2;                   /* 0x0062 */
 226#define ECB3_DEA 0x08
 227#define ECB3_AES 0x04
 228#define ECB3_RI  0x01
 229        __u8    ecb3;                   /* 0x0063 */
 230        __u32   scaol;                  /* 0x0064 */
 231        __u8    reserved68;             /* 0x0068 */
 232        __u8    epdx;                   /* 0x0069 */
 233        __u8    reserved6a[2];          /* 0x006a */
 234        __u32   todpr;                  /* 0x006c */
 235#define GISA_FORMAT1 0x00000001
 236        __u32   gd;                     /* 0x0070 */
 237        __u8    reserved74[12];         /* 0x0074 */
 238        __u64   mso;                    /* 0x0080 */
 239        __u64   msl;                    /* 0x0088 */
 240        psw_t   gpsw;                   /* 0x0090 */
 241        __u64   gg14;                   /* 0x00a0 */
 242        __u64   gg15;                   /* 0x00a8 */
 243        __u8    reservedb0[8];          /* 0x00b0 */
 244#define HPID_KVM        0x4
 245#define HPID_VSIE       0x5
 246        __u8    hpid;                   /* 0x00b8 */
 247        __u8    reservedb9[11];         /* 0x00b9 */
 248        __u16   extcpuaddr;             /* 0x00c4 */
 249        __u16   eic;                    /* 0x00c6 */
 250        __u32   reservedc8;             /* 0x00c8 */
 251        __u16   pgmilc;                 /* 0x00cc */
 252        __u16   iprcc;                  /* 0x00ce */
 253        __u32   dxc;                    /* 0x00d0 */
 254        __u16   mcn;                    /* 0x00d4 */
 255        __u8    perc;                   /* 0x00d6 */
 256        __u8    peratmid;               /* 0x00d7 */
 257        __u64   peraddr;                /* 0x00d8 */
 258        __u8    eai;                    /* 0x00e0 */
 259        __u8    peraid;                 /* 0x00e1 */
 260        __u8    oai;                    /* 0x00e2 */
 261        __u8    armid;                  /* 0x00e3 */
 262        __u8    reservede4[4];          /* 0x00e4 */
 263        __u64   tecmc;                  /* 0x00e8 */
 264        __u8    reservedf0[12];         /* 0x00f0 */
 265#define CRYCB_FORMAT_MASK 0x00000003
 266#define CRYCB_FORMAT0 0x00000000
 267#define CRYCB_FORMAT1 0x00000001
 268#define CRYCB_FORMAT2 0x00000003
 269        __u32   crycbd;                 /* 0x00fc */
 270        __u64   gcr[16];                /* 0x0100 */
 271        __u64   gbea;                   /* 0x0180 */
 272        __u8    reserved188[8];         /* 0x0188 */
 273        __u64   sdnxo;                  /* 0x0190 */
 274        __u8    reserved198[8];         /* 0x0198 */
 275        __u32   fac;                    /* 0x01a0 */
 276        __u8    reserved1a4[20];        /* 0x01a4 */
 277        __u64   cbrlo;                  /* 0x01b8 */
 278        __u8    reserved1c0[8];         /* 0x01c0 */
 279#define ECD_HOSTREGMGMT 0x20000000
 280#define ECD_MEF         0x08000000
 281#define ECD_ETOKENF     0x02000000
 282#define ECD_ECC         0x00200000
 283        __u32   ecd;                    /* 0x01c8 */
 284        __u8    reserved1cc[18];        /* 0x01cc */
 285        __u64   pp;                     /* 0x01de */
 286        __u8    reserved1e6[2];         /* 0x01e6 */
 287        __u64   itdba;                  /* 0x01e8 */
 288        __u64   riccbd;                 /* 0x01f0 */
 289        __u64   gvrd;                   /* 0x01f8 */
 290} __attribute__((packed));
 291
 292struct kvm_s390_itdb {
 293        __u8    data[256];
 294};
 295
 296struct sie_page {
 297        struct kvm_s390_sie_block sie_block;
 298        struct mcck_volatile_info mcck_info;    /* 0x0200 */
 299        __u8 reserved218[1000];         /* 0x0218 */
 300        struct kvm_s390_itdb itdb;      /* 0x0600 */
 301        __u8 reserved700[2304];         /* 0x0700 */
 302};
 303
 304struct kvm_vcpu_stat {
 305        u64 exit_userspace;
 306        u64 exit_null;
 307        u64 exit_external_request;
 308        u64 exit_io_request;
 309        u64 exit_external_interrupt;
 310        u64 exit_stop_request;
 311        u64 exit_validity;
 312        u64 exit_instruction;
 313        u64 exit_pei;
 314        u64 halt_successful_poll;
 315        u64 halt_attempted_poll;
 316        u64 halt_poll_invalid;
 317        u64 halt_no_poll_steal;
 318        u64 halt_wakeup;
 319        u64 instruction_lctl;
 320        u64 instruction_lctlg;
 321        u64 instruction_stctl;
 322        u64 instruction_stctg;
 323        u64 exit_program_interruption;
 324        u64 exit_instr_and_program;
 325        u64 exit_operation_exception;
 326        u64 deliver_ckc;
 327        u64 deliver_cputm;
 328        u64 deliver_external_call;
 329        u64 deliver_emergency_signal;
 330        u64 deliver_service_signal;
 331        u64 deliver_virtio;
 332        u64 deliver_stop_signal;
 333        u64 deliver_prefix_signal;
 334        u64 deliver_restart_signal;
 335        u64 deliver_program;
 336        u64 deliver_io;
 337        u64 deliver_machine_check;
 338        u64 exit_wait_state;
 339        u64 inject_ckc;
 340        u64 inject_cputm;
 341        u64 inject_external_call;
 342        u64 inject_emergency_signal;
 343        u64 inject_mchk;
 344        u64 inject_pfault_init;
 345        u64 inject_program;
 346        u64 inject_restart;
 347        u64 inject_set_prefix;
 348        u64 inject_stop_signal;
 349        u64 instruction_epsw;
 350        u64 instruction_gs;
 351        u64 instruction_io_other;
 352        u64 instruction_lpsw;
 353        u64 instruction_lpswe;
 354        u64 instruction_pfmf;
 355        u64 instruction_ptff;
 356        u64 instruction_sck;
 357        u64 instruction_sckpf;
 358        u64 instruction_stidp;
 359        u64 instruction_spx;
 360        u64 instruction_stpx;
 361        u64 instruction_stap;
 362        u64 instruction_iske;
 363        u64 instruction_ri;
 364        u64 instruction_rrbe;
 365        u64 instruction_sske;
 366        u64 instruction_ipte_interlock;
 367        u64 instruction_stsi;
 368        u64 instruction_stfl;
 369        u64 instruction_tb;
 370        u64 instruction_tpi;
 371        u64 instruction_tprot;
 372        u64 instruction_tsch;
 373        u64 instruction_sie;
 374        u64 instruction_essa;
 375        u64 instruction_sthyi;
 376        u64 instruction_sigp_sense;
 377        u64 instruction_sigp_sense_running;
 378        u64 instruction_sigp_external_call;
 379        u64 instruction_sigp_emergency;
 380        u64 instruction_sigp_cond_emergency;
 381        u64 instruction_sigp_start;
 382        u64 instruction_sigp_stop;
 383        u64 instruction_sigp_stop_store_status;
 384        u64 instruction_sigp_store_status;
 385        u64 instruction_sigp_store_adtl_status;
 386        u64 instruction_sigp_arch;
 387        u64 instruction_sigp_prefix;
 388        u64 instruction_sigp_restart;
 389        u64 instruction_sigp_init_cpu_reset;
 390        u64 instruction_sigp_cpu_reset;
 391        u64 instruction_sigp_unknown;
 392        u64 diagnose_10;
 393        u64 diagnose_44;
 394        u64 diagnose_9c;
 395        u64 diagnose_258;
 396        u64 diagnose_308;
 397        u64 diagnose_500;
 398        u64 diagnose_other;
 399};
 400
 401#define PGM_OPERATION                   0x01
 402#define PGM_PRIVILEGED_OP               0x02
 403#define PGM_EXECUTE                     0x03
 404#define PGM_PROTECTION                  0x04
 405#define PGM_ADDRESSING                  0x05
 406#define PGM_SPECIFICATION               0x06
 407#define PGM_DATA                        0x07
 408#define PGM_FIXED_POINT_OVERFLOW        0x08
 409#define PGM_FIXED_POINT_DIVIDE          0x09
 410#define PGM_DECIMAL_OVERFLOW            0x0a
 411#define PGM_DECIMAL_DIVIDE              0x0b
 412#define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 413#define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 414#define PGM_HFP_SIGNIFICANCE            0x0e
 415#define PGM_HFP_DIVIDE                  0x0f
 416#define PGM_SEGMENT_TRANSLATION         0x10
 417#define PGM_PAGE_TRANSLATION            0x11
 418#define PGM_TRANSLATION_SPEC            0x12
 419#define PGM_SPECIAL_OPERATION           0x13
 420#define PGM_OPERAND                     0x15
 421#define PGM_TRACE_TABEL                 0x16
 422#define PGM_VECTOR_PROCESSING           0x1b
 423#define PGM_SPACE_SWITCH                0x1c
 424#define PGM_HFP_SQUARE_ROOT             0x1d
 425#define PGM_PC_TRANSLATION_SPEC         0x1f
 426#define PGM_AFX_TRANSLATION             0x20
 427#define PGM_ASX_TRANSLATION             0x21
 428#define PGM_LX_TRANSLATION              0x22
 429#define PGM_EX_TRANSLATION              0x23
 430#define PGM_PRIMARY_AUTHORITY           0x24
 431#define PGM_SECONDARY_AUTHORITY         0x25
 432#define PGM_LFX_TRANSLATION             0x26
 433#define PGM_LSX_TRANSLATION             0x27
 434#define PGM_ALET_SPECIFICATION          0x28
 435#define PGM_ALEN_TRANSLATION            0x29
 436#define PGM_ALE_SEQUENCE                0x2a
 437#define PGM_ASTE_VALIDITY               0x2b
 438#define PGM_ASTE_SEQUENCE               0x2c
 439#define PGM_EXTENDED_AUTHORITY          0x2d
 440#define PGM_LSTE_SEQUENCE               0x2e
 441#define PGM_ASTE_INSTANCE               0x2f
 442#define PGM_STACK_FULL                  0x30
 443#define PGM_STACK_EMPTY                 0x31
 444#define PGM_STACK_SPECIFICATION         0x32
 445#define PGM_STACK_TYPE                  0x33
 446#define PGM_STACK_OPERATION             0x34
 447#define PGM_ASCE_TYPE                   0x38
 448#define PGM_REGION_FIRST_TRANS          0x39
 449#define PGM_REGION_SECOND_TRANS         0x3a
 450#define PGM_REGION_THIRD_TRANS          0x3b
 451#define PGM_MONITOR                     0x40
 452#define PGM_PER                         0x80
 453#define PGM_CRYPTO_OPERATION            0x119
 454
 455/* irq types in ascend order of priorities */
 456enum irq_types {
 457        IRQ_PEND_SET_PREFIX = 0,
 458        IRQ_PEND_RESTART,
 459        IRQ_PEND_SIGP_STOP,
 460        IRQ_PEND_IO_ISC_7,
 461        IRQ_PEND_IO_ISC_6,
 462        IRQ_PEND_IO_ISC_5,
 463        IRQ_PEND_IO_ISC_4,
 464        IRQ_PEND_IO_ISC_3,
 465        IRQ_PEND_IO_ISC_2,
 466        IRQ_PEND_IO_ISC_1,
 467        IRQ_PEND_IO_ISC_0,
 468        IRQ_PEND_VIRTIO,
 469        IRQ_PEND_PFAULT_DONE,
 470        IRQ_PEND_PFAULT_INIT,
 471        IRQ_PEND_EXT_HOST,
 472        IRQ_PEND_EXT_SERVICE,
 473        IRQ_PEND_EXT_TIMING,
 474        IRQ_PEND_EXT_CPU_TIMER,
 475        IRQ_PEND_EXT_CLOCK_COMP,
 476        IRQ_PEND_EXT_EXTERNAL,
 477        IRQ_PEND_EXT_EMERGENCY,
 478        IRQ_PEND_EXT_MALFUNC,
 479        IRQ_PEND_EXT_IRQ_KEY,
 480        IRQ_PEND_MCHK_REP,
 481        IRQ_PEND_PROG,
 482        IRQ_PEND_SVC,
 483        IRQ_PEND_MCHK_EX,
 484        IRQ_PEND_COUNT
 485};
 486
 487/* We have 2M for virtio device descriptor pages. Smallest amount of
 488 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 489 */
 490#define KVM_S390_MAX_VIRTIO_IRQS 87381
 491
 492/*
 493 * Repressible (non-floating) machine check interrupts
 494 * subclass bits in MCIC
 495 */
 496#define MCHK_EXTD_BIT 58
 497#define MCHK_DEGR_BIT 56
 498#define MCHK_WARN_BIT 55
 499#define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 500                       (1UL << MCHK_EXTD_BIT) | \
 501                       (1UL << MCHK_WARN_BIT))
 502
 503/* Exigent machine check interrupts subclass bits in MCIC */
 504#define MCHK_SD_BIT 63
 505#define MCHK_PD_BIT 62
 506#define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 507
 508#define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 509                           (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 510                           (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 511                           (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 512                           (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 513                           (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 514                           (1UL << IRQ_PEND_EXT_TIMING)     | \
 515                           (1UL << IRQ_PEND_EXT_HOST)       | \
 516                           (1UL << IRQ_PEND_EXT_SERVICE)    | \
 517                           (1UL << IRQ_PEND_VIRTIO)         | \
 518                           (1UL << IRQ_PEND_PFAULT_INIT)    | \
 519                           (1UL << IRQ_PEND_PFAULT_DONE))
 520
 521#define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 522                          (1UL << IRQ_PEND_IO_ISC_1) | \
 523                          (1UL << IRQ_PEND_IO_ISC_2) | \
 524                          (1UL << IRQ_PEND_IO_ISC_3) | \
 525                          (1UL << IRQ_PEND_IO_ISC_4) | \
 526                          (1UL << IRQ_PEND_IO_ISC_5) | \
 527                          (1UL << IRQ_PEND_IO_ISC_6) | \
 528                          (1UL << IRQ_PEND_IO_ISC_7))
 529
 530#define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 531                            (1UL << IRQ_PEND_MCHK_EX))
 532
 533struct kvm_s390_interrupt_info {
 534        struct list_head list;
 535        u64     type;
 536        union {
 537                struct kvm_s390_io_info io;
 538                struct kvm_s390_ext_info ext;
 539                struct kvm_s390_pgm_info pgm;
 540                struct kvm_s390_emerg_info emerg;
 541                struct kvm_s390_extcall_info extcall;
 542                struct kvm_s390_prefix_info prefix;
 543                struct kvm_s390_stop_info stop;
 544                struct kvm_s390_mchk_info mchk;
 545        };
 546};
 547
 548struct kvm_s390_irq_payload {
 549        struct kvm_s390_io_info io;
 550        struct kvm_s390_ext_info ext;
 551        struct kvm_s390_pgm_info pgm;
 552        struct kvm_s390_emerg_info emerg;
 553        struct kvm_s390_extcall_info extcall;
 554        struct kvm_s390_prefix_info prefix;
 555        struct kvm_s390_stop_info stop;
 556        struct kvm_s390_mchk_info mchk;
 557};
 558
 559struct kvm_s390_local_interrupt {
 560        spinlock_t lock;
 561        DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 562        struct kvm_s390_irq_payload irq;
 563        unsigned long pending_irqs;
 564};
 565
 566#define FIRQ_LIST_IO_ISC_0 0
 567#define FIRQ_LIST_IO_ISC_1 1
 568#define FIRQ_LIST_IO_ISC_2 2
 569#define FIRQ_LIST_IO_ISC_3 3
 570#define FIRQ_LIST_IO_ISC_4 4
 571#define FIRQ_LIST_IO_ISC_5 5
 572#define FIRQ_LIST_IO_ISC_6 6
 573#define FIRQ_LIST_IO_ISC_7 7
 574#define FIRQ_LIST_PFAULT   8
 575#define FIRQ_LIST_VIRTIO   9
 576#define FIRQ_LIST_COUNT   10
 577#define FIRQ_CNTR_IO       0
 578#define FIRQ_CNTR_SERVICE  1
 579#define FIRQ_CNTR_VIRTIO   2
 580#define FIRQ_CNTR_PFAULT   3
 581#define FIRQ_MAX_COUNT     4
 582
 583/* mask the AIS mode for a given ISC */
 584#define AIS_MODE_MASK(isc) (0x80 >> isc)
 585
 586#define KVM_S390_AIS_MODE_ALL    0
 587#define KVM_S390_AIS_MODE_SINGLE 1
 588
 589struct kvm_s390_float_interrupt {
 590        unsigned long pending_irqs;
 591        spinlock_t lock;
 592        struct list_head lists[FIRQ_LIST_COUNT];
 593        int counters[FIRQ_MAX_COUNT];
 594        struct kvm_s390_mchk_info mchk;
 595        struct kvm_s390_ext_info srv_signal;
 596        int next_rr_cpu;
 597        struct mutex ais_lock;
 598        u8 simm;
 599        u8 nimm;
 600};
 601
 602struct kvm_hw_wp_info_arch {
 603        unsigned long addr;
 604        unsigned long phys_addr;
 605        int len;
 606        char *old_data;
 607};
 608
 609struct kvm_hw_bp_info_arch {
 610        unsigned long addr;
 611        int len;
 612};
 613
 614/*
 615 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 616 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 617 * arch/s390/include/uapi/asm/kvm.h
 618 */
 619#define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 620
 621#define guestdbg_enabled(vcpu) \
 622                (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 623#define guestdbg_sstep_enabled(vcpu) \
 624                (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 625#define guestdbg_hw_bp_enabled(vcpu) \
 626                (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 627#define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 628                (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 629
 630struct kvm_guestdbg_info_arch {
 631        unsigned long cr0;
 632        unsigned long cr9;
 633        unsigned long cr10;
 634        unsigned long cr11;
 635        struct kvm_hw_bp_info_arch *hw_bp_info;
 636        struct kvm_hw_wp_info_arch *hw_wp_info;
 637        int nr_hw_bp;
 638        int nr_hw_wp;
 639        unsigned long last_bp;
 640};
 641
 642struct kvm_vcpu_arch {
 643        struct kvm_s390_sie_block *sie_block;
 644        /* if vsie is active, currently executed shadow sie control block */
 645        struct kvm_s390_sie_block *vsie_block;
 646        unsigned int      host_acrs[NUM_ACRS];
 647        struct gs_cb      *host_gscb;
 648        struct fpu        host_fpregs;
 649        struct kvm_s390_local_interrupt local_int;
 650        struct hrtimer    ckc_timer;
 651        struct kvm_s390_pgm_info pgm;
 652        struct gmap *gmap;
 653        /* backup location for the currently enabled gmap when scheduled out */
 654        struct gmap *enabled_gmap;
 655        struct kvm_guestdbg_info_arch guestdbg;
 656        unsigned long pfault_token;
 657        unsigned long pfault_select;
 658        unsigned long pfault_compare;
 659        bool cputm_enabled;
 660        /*
 661         * The seqcount protects updates to cputm_start and sie_block.cputm,
 662         * this way we can have non-blocking reads with consistent values.
 663         * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
 664         * values and to start/stop/enable/disable cpu timer accounting.
 665         */
 666        seqcount_t cputm_seqcount;
 667        __u64 cputm_start;
 668        bool gs_enabled;
 669        bool skey_enabled;
 670};
 671
 672struct kvm_vm_stat {
 673        u64 inject_io;
 674        u64 inject_float_mchk;
 675        u64 inject_pfault_done;
 676        u64 inject_service_signal;
 677        u64 inject_virtio;
 678        u64 remote_tlb_flush;
 679};
 680
 681struct kvm_arch_memory_slot {
 682};
 683
 684struct s390_map_info {
 685        struct list_head list;
 686        __u64 guest_addr;
 687        __u64 addr;
 688        struct page *page;
 689};
 690
 691struct s390_io_adapter {
 692        unsigned int id;
 693        int isc;
 694        bool maskable;
 695        bool masked;
 696        bool swap;
 697        bool suppressible;
 698        struct rw_semaphore maps_lock;
 699        struct list_head maps;
 700        atomic_t nr_maps;
 701};
 702
 703#define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 704#define MAX_S390_ADAPTER_MAPS 256
 705
 706/* maximum size of facilities and facility mask is 2k bytes */
 707#define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 708#define S390_ARCH_FAC_LIST_SIZE_U64 \
 709        (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 710#define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 711#define S390_ARCH_FAC_MASK_SIZE_U64 \
 712        (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 713
 714struct kvm_s390_cpu_model {
 715        /* facility mask supported by kvm & hosting machine */
 716        __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
 717        struct kvm_s390_vm_cpu_subfunc subfuncs;
 718        /* facility list requested by guest (in dma page) */
 719        __u64 *fac_list;
 720        u64 cpuid;
 721        unsigned short ibc;
 722};
 723
 724struct kvm_s390_module_hook {
 725        int (*hook)(struct kvm_vcpu *vcpu);
 726        struct module *owner;
 727};
 728
 729struct kvm_s390_crypto {
 730        struct kvm_s390_crypto_cb *crycb;
 731        struct kvm_s390_module_hook *pqap_hook;
 732        __u32 crycbd;
 733        __u8 aes_kw;
 734        __u8 dea_kw;
 735        __u8 apie;
 736};
 737
 738#define APCB0_MASK_SIZE 1
 739struct kvm_s390_apcb0 {
 740        __u64 apm[APCB0_MASK_SIZE];             /* 0x0000 */
 741        __u64 aqm[APCB0_MASK_SIZE];             /* 0x0008 */
 742        __u64 adm[APCB0_MASK_SIZE];             /* 0x0010 */
 743        __u64 reserved18;                       /* 0x0018 */
 744};
 745
 746#define APCB1_MASK_SIZE 4
 747struct kvm_s390_apcb1 {
 748        __u64 apm[APCB1_MASK_SIZE];             /* 0x0000 */
 749        __u64 aqm[APCB1_MASK_SIZE];             /* 0x0020 */
 750        __u64 adm[APCB1_MASK_SIZE];             /* 0x0040 */
 751        __u64 reserved60[4];                    /* 0x0060 */
 752};
 753
 754struct kvm_s390_crypto_cb {
 755        struct kvm_s390_apcb0 apcb0;            /* 0x0000 */
 756        __u8   reserved20[0x0048 - 0x0020];     /* 0x0020 */
 757        __u8   dea_wrapping_key_mask[24];       /* 0x0048 */
 758        __u8   aes_wrapping_key_mask[32];       /* 0x0060 */
 759        struct kvm_s390_apcb1 apcb1;            /* 0x0080 */
 760};
 761
 762struct kvm_s390_gisa {
 763        union {
 764                struct { /* common to all formats */
 765                        u32 next_alert;
 766                        u8  ipm;
 767                        u8  reserved01[2];
 768                        u8  iam;
 769                };
 770                struct { /* format 0 */
 771                        u32 next_alert;
 772                        u8  ipm;
 773                        u8  reserved01;
 774                        u8  : 6;
 775                        u8  g : 1;
 776                        u8  c : 1;
 777                        u8  iam;
 778                        u8  reserved02[4];
 779                        u32 airq_count;
 780                } g0;
 781                struct { /* format 1 */
 782                        u32 next_alert;
 783                        u8  ipm;
 784                        u8  simm;
 785                        u8  nimm;
 786                        u8  iam;
 787                        u8  aism[8];
 788                        u8  : 6;
 789                        u8  g : 1;
 790                        u8  c : 1;
 791                        u8  reserved03[11];
 792                        u32 airq_count;
 793                } g1;
 794                struct {
 795                        u64 word[4];
 796                } u64;
 797        };
 798};
 799
 800struct kvm_s390_gib {
 801        u32 alert_list_origin;
 802        u32 reserved01;
 803        u8:5;
 804        u8  nisc:3;
 805        u8  reserved03[3];
 806        u32 reserved04[5];
 807};
 808
 809/*
 810 * sie_page2 has to be allocated as DMA because fac_list, crycb and
 811 * gisa need 31bit addresses in the sie control block.
 812 */
 813struct sie_page2 {
 814        __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
 815        struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
 816        struct kvm_s390_gisa gisa;                      /* 0x0900 */
 817        struct kvm *kvm;                                /* 0x0920 */
 818        u8 reserved928[0x1000 - 0x928];                 /* 0x0928 */
 819};
 820
 821struct kvm_s390_vsie {
 822        struct mutex mutex;
 823        struct radix_tree_root addr_to_page;
 824        int page_count;
 825        int next;
 826        struct page *pages[KVM_MAX_VCPUS];
 827};
 828
 829struct kvm_s390_gisa_iam {
 830        u8 mask;
 831        spinlock_t ref_lock;
 832        u32 ref_count[MAX_ISC + 1];
 833};
 834
 835struct kvm_s390_gisa_interrupt {
 836        struct kvm_s390_gisa *origin;
 837        struct kvm_s390_gisa_iam alert;
 838        struct hrtimer timer;
 839        u64 expires;
 840        DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
 841};
 842
 843struct kvm_arch{
 844        void *sca;
 845        int use_esca;
 846        rwlock_t sca_lock;
 847        debug_info_t *dbf;
 848        struct kvm_s390_float_interrupt float_int;
 849        struct kvm_device *flic;
 850        struct gmap *gmap;
 851        unsigned long mem_limit;
 852        int css_support;
 853        int use_irqchip;
 854        int use_cmma;
 855        int use_pfmfi;
 856        int use_skf;
 857        int user_cpu_state_ctrl;
 858        int user_sigp;
 859        int user_stsi;
 860        int user_instr0;
 861        struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 862        wait_queue_head_t ipte_wq;
 863        int ipte_lock_count;
 864        struct mutex ipte_mutex;
 865        spinlock_t start_stop_lock;
 866        struct sie_page2 *sie_page2;
 867        struct kvm_s390_cpu_model model;
 868        struct kvm_s390_crypto crypto;
 869        struct kvm_s390_vsie vsie;
 870        u8 epdx;
 871        u64 epoch;
 872        int migration_mode;
 873        atomic64_t cmma_dirty_pages;
 874        /* subset of available cpu features enabled by user space */
 875        DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
 876        DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
 877        struct kvm_s390_gisa_interrupt gisa_int;
 878};
 879
 880#define KVM_HVA_ERR_BAD         (-1UL)
 881#define KVM_HVA_ERR_RO_BAD      (-2UL)
 882
 883static inline bool kvm_is_error_hva(unsigned long addr)
 884{
 885        return IS_ERR_VALUE(addr);
 886}
 887
 888#define ASYNC_PF_PER_VCPU       64
 889struct kvm_arch_async_pf {
 890        unsigned long pfault_token;
 891};
 892
 893bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 894
 895void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 896                               struct kvm_async_pf *work);
 897
 898void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 899                                     struct kvm_async_pf *work);
 900
 901void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 902                                 struct kvm_async_pf *work);
 903
 904void kvm_arch_crypto_clear_masks(struct kvm *kvm);
 905void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
 906                               unsigned long *aqm, unsigned long *adm);
 907
 908extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 909extern char sie_exit;
 910
 911extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
 912extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
 913
 914static inline void kvm_arch_hardware_disable(void) {}
 915static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 916static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
 917static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 918static inline void kvm_arch_free_memslot(struct kvm *kvm,
 919                struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
 920static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
 921static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 922static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
 923                struct kvm_memory_slot *slot) {}
 924static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
 925static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
 926
 927void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
 928
 929#endif
 930