arch/s390/include/asm/kvm_host.h

   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 <asm/debug.h>
  22 #include <asm/cpu.h>
  23 #include <asm/fpu/api.h>
  24 #include <asm/isc.h>
  25 #include <asm/guarded_storage.h>
  26
  27 #define KVM_S390_BSCA_CPU_SLOTS 64
  28 #define KVM_S390_ESCA_CPU_SLOTS 248
  29 #define KVM_MAX_VCPUS 255
  30 #define KVM_USER_MEM_SLOTS 32
  31
  32 /*
  33  * These seem to be used for allocating ->chip in the routing table,
  34  * which we don't use. 4096 is an out-of-thin-air value. If we need
  35  * to look at ->chip later on, we'll need to revisit this.
  36  */
  37 #define KVM_NR_IRQCHIPS 1
  38 #define KVM_IRQCHIP_NUM_PINS 4096
  39 #define KVM_HALT_POLL_NS_DEFAULT 80000
  40
  41 /* s390-specific vcpu->requests bit members */
  42 #define KVM_REQ_ENABLE_IBS      KVM_ARCH_REQ(0)
  43 #define KVM_REQ_DISABLE_IBS     KVM_ARCH_REQ(1)
  44 #define KVM_REQ_ICPT_OPEREXC    KVM_ARCH_REQ(2)
  45 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
  46 #define KVM_REQ_STOP_MIGRATION  KVM_ARCH_REQ(4)
  47 #define KVM_REQ_VSIE_RESTART    KVM_ARCH_REQ(5)
  48
  49 #define SIGP_CTRL_C             0x80
  50 #define SIGP_CTRL_SCN_MASK      0x3f
  51
  52 union bsca_sigp_ctrl {
  53         __u8 value;
  54         struct {
  55                 __u8 c : 1;
  56                 __u8 r : 1;
  57                 __u8 scn : 6;
  58         };
  59 };
  60
  61 union esca_sigp_ctrl {
  62         __u16 value;
  63         struct {
  64                 __u8 c : 1;
  65                 __u8 reserved: 7;
  66                 __u8 scn;
  67         };
  68 };
  69
  70 struct esca_entry {
  71         union esca_sigp_ctrl sigp_ctrl;
  72         __u16   reserved1[3];
  73         __u64   sda;
  74         __u64   reserved2[6];
  75 };
  76
  77 struct bsca_entry {
  78         __u8    reserved0;
  79         union bsca_sigp_ctrl    sigp_ctrl;
  80         __u16   reserved[3];
  81         __u64   sda;
  82         __u64   reserved2[2];
  83 };
  84
  85 union ipte_control {
  86         unsigned long val;
  87         struct {
  88                 unsigned long k  : 1;
  89                 unsigned long kh : 31;
  90                 unsigned long kg : 32;
  91         };
  92 };
  93
  94 struct bsca_block {
  95         union ipte_control ipte_control;
  96         __u64   reserved[5];
  97         __u64   mcn;
  98         __u64   reserved2;
  99         struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
 100 };
 101
 102 struct esca_block {
 103         union ipte_control ipte_control;
 104         __u64   reserved1[7];
 105         __u64   mcn[4];
 106         __u64   reserved2[20];
 107         struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
 108 };
 109
 110 /*
 111  * This struct is used to store some machine check info from lowcore
 112  * for machine checks that happen while the guest is running.
 113  * This info in host's lowcore might be overwritten by a second machine
 114  * check from host when host is in the machine check's high-level handling.
 115  * The size is 24 bytes.
 116  */
 117 struct mcck_volatile_info {
 118         __u64 mcic;
 119         __u64 failing_storage_address;
 120         __u32 ext_damage_code;
 121         __u32 reserved;
 122 };
 123
 124 #define CPUSTAT_STOPPED    0x80000000
 125 #define CPUSTAT_WAIT       0x10000000
 126 #define CPUSTAT_ECALL_PEND 0x08000000
 127 #define CPUSTAT_STOP_INT   0x04000000
 128 #define CPUSTAT_IO_INT     0x02000000
 129 #define CPUSTAT_EXT_INT    0x01000000
 130 #define CPUSTAT_RUNNING    0x00800000
 131 #define CPUSTAT_RETAINED   0x00400000
 132 #define CPUSTAT_TIMING_SUB 0x00020000
 133 #define CPUSTAT_SIE_SUB    0x00010000
 134 #define CPUSTAT_RRF        0x00008000
 135 #define CPUSTAT_SLSV       0x00004000
 136 #define CPUSTAT_SLSR       0x00002000
 137 #define CPUSTAT_ZARCH      0x00000800
 138 #define CPUSTAT_MCDS       0x00000100
 139 #define CPUSTAT_KSS        0x00000200
 140 #define CPUSTAT_SM         0x00000080
 141 #define CPUSTAT_IBS        0x00000040
 142 #define CPUSTAT_GED2       0x00000010
 143 #define CPUSTAT_G          0x00000008
 144 #define CPUSTAT_GED        0x00000004
 145 #define CPUSTAT_J          0x00000002
 146 #define CPUSTAT_P          0x00000001
 147
 148 struct kvm_s390_sie_block {
 149         atomic_t cpuflags;              /* 0x0000 */
 150         __u32 : 1;                      /* 0x0004 */
 151         __u32 prefix : 18;
 152         __u32 : 1;
 153         __u32 ibc : 12;
 154         __u8    reserved08[4];          /* 0x0008 */
 155 #define PROG_IN_SIE (1<<0)
 156         __u32   prog0c;                 /* 0x000c */
 157         __u8    reserved10[16];         /* 0x0010 */
 158 #define PROG_BLOCK_SIE  (1<<0)
 159 #define PROG_REQUEST    (1<<1)
 160         atomic_t prog20;                /* 0x0020 */
 161         __u8    reserved24[4];          /* 0x0024 */
 162         __u64   cputm;                  /* 0x0028 */
 163         __u64   ckc;                    /* 0x0030 */
 164         __u64   epoch;                  /* 0x0038 */
 165         __u32   svcc;                   /* 0x0040 */
 166 #define LCTL_CR0        0x8000
 167 #define LCTL_CR6        0x0200
 168 #define LCTL_CR9        0x0040
 169 #define LCTL_CR10       0x0020
 170 #define LCTL_CR11       0x0010
 171 #define LCTL_CR14       0x0002
 172         __u16   lctl;                   /* 0x0044 */
 173         __s16   icpua;                  /* 0x0046 */
 174 #define ICTL_OPEREXC    0x80000000
 175 #define ICTL_PINT       0x20000000
 176 #define ICTL_LPSW       0x00400000
 177 #define ICTL_STCTL      0x00040000
 178 #define ICTL_ISKE       0x00004000
 179 #define ICTL_SSKE       0x00002000
 180 #define ICTL_RRBE       0x00001000
 181 #define ICTL_TPROT      0x00000200
 182         __u32   ictl;                   /* 0x0048 */
 183 #define ECA_CEI         0x80000000
 184 #define ECA_IB          0x40000000
 185 #define ECA_SIGPI       0x10000000
 186 #define ECA_MVPGI       0x01000000
 187 #define ECA_AIV         0x00200000
 188 #define ECA_VX          0x00020000
 189 #define ECA_PROTEXCI    0x00002000
 190 #define ECA_APIE        0x00000008
 191 #define ECA_SII         0x00000001
 192         __u32   eca;                    /* 0x004c */
 193 #define ICPT_INST       0x04
 194 #define ICPT_PROGI      0x08
 195 #define ICPT_INSTPROGI  0x0C
 196 #define ICPT_EXTREQ     0x10
 197 #define ICPT_EXTINT     0x14
 198 #define ICPT_IOREQ      0x18
 199 #define ICPT_WAIT       0x1c
 200 #define ICPT_VALIDITY   0x20
 201 #define ICPT_STOP       0x28
 202 #define ICPT_OPEREXC    0x2C
 203 #define ICPT_PARTEXEC   0x38
 204 #define ICPT_IOINST     0x40
 205 #define ICPT_KSS        0x5c
 206         __u8    icptcode;               /* 0x0050 */
 207         __u8    icptstatus;             /* 0x0051 */
 208         __u16   ihcpu;                  /* 0x0052 */
 209         __u8    reserved54[2];          /* 0x0054 */
 210         __u16   ipa;                    /* 0x0056 */
 211         __u32   ipb;                    /* 0x0058 */
 212         __u32   scaoh;                  /* 0x005c */
 213 #define FPF_BPBC        0x20
 214         __u8    fpf;                    /* 0x0060 */
 215 #define ECB_GS          0x40
 216 #define ECB_TE          0x10
 217 #define ECB_SRSI        0x04
 218 #define ECB_HOSTPROTINT 0x02
 219         __u8    ecb;                    /* 0x0061 */
 220 #define ECB2_CMMA       0x80
 221 #define ECB2_IEP        0x20
 222 #define ECB2_PFMFI      0x08
 223 #define ECB2_ESCA       0x04
 224         __u8    ecb2;                   /* 0x0062 */
 225 #define ECB3_DEA 0x08
 226 #define ECB3_AES 0x04
 227 #define ECB3_RI  0x01
 228         __u8    ecb3;                   /* 0x0063 */
 229         __u32   scaol;                  /* 0x0064 */
 230         __u8    reserved68;             /* 0x0068 */
 231         __u8    epdx;                   /* 0x0069 */
 232         __u8    reserved6a[2];          /* 0x006a */
 233         __u32   todpr;                  /* 0x006c */
 234 #define GISA_FORMAT1 0x00000001
 235         __u32   gd;                     /* 0x0070 */
 236         __u8    reserved74[12];         /* 0x0074 */
 237         __u64   mso;                    /* 0x0080 */
 238         __u64   msl;                    /* 0x0088 */
 239         psw_t   gpsw;                   /* 0x0090 */
 240         __u64   gg14;                   /* 0x00a0 */
 241         __u64   gg15;                   /* 0x00a8 */
 242         __u8    reservedb0[8];          /* 0x00b0 */
 243 #define HPID_KVM        0x4
 244 #define HPID_VSIE       0x5
 245         __u8    hpid;                   /* 0x00b8 */
 246         __u8    reservedb9[11];         /* 0x00b9 */
 247         __u16   extcpuaddr;             /* 0x00c4 */
 248         __u16   eic;                    /* 0x00c6 */
 249         __u32   reservedc8;             /* 0x00c8 */
 250         __u16   pgmilc;                 /* 0x00cc */
 251         __u16   iprcc;                  /* 0x00ce */
 252         __u32   dxc;                    /* 0x00d0 */
 253         __u16   mcn;                    /* 0x00d4 */
 254         __u8    perc;                   /* 0x00d6 */
 255         __u8    peratmid;               /* 0x00d7 */
 256         __u64   peraddr;                /* 0x00d8 */
 257         __u8    eai;                    /* 0x00e0 */
 258         __u8    peraid;                 /* 0x00e1 */
 259         __u8    oai;                    /* 0x00e2 */
 260         __u8    armid;                  /* 0x00e3 */
 261         __u8    reservede4[4];          /* 0x00e4 */
 262         __u64   tecmc;                  /* 0x00e8 */
 263         __u8    reservedf0[12];         /* 0x00f0 */
 264 #define CRYCB_FORMAT_MASK 0x00000003
 265 #define CRYCB_FORMAT0 0x00000000
 266 #define CRYCB_FORMAT1 0x00000001
 267 #define CRYCB_FORMAT2 0x00000003
 268         __u32   crycbd;                 /* 0x00fc */
 269         __u64   gcr[16];                /* 0x0100 */
 270         __u64   gbea;                   /* 0x0180 */
 271         __u8    reserved188[8];         /* 0x0188 */
 272         __u64   sdnxo;                  /* 0x0190 */
 273         __u8    reserved198[8];         /* 0x0198 */
 274         __u32   fac;                    /* 0x01a0 */
 275         __u8    reserved1a4[20];        /* 0x01a4 */
 276         __u64   cbrlo;                  /* 0x01b8 */
 277         __u8    reserved1c0[8];         /* 0x01c0 */
 278 #define ECD_HOSTREGMGMT 0x20000000
 279 #define ECD_MEF         0x08000000
 280 #define ECD_ETOKENF     0x02000000
 281         __u32   ecd;                    /* 0x01c8 */
 282         __u8    reserved1cc[18];        /* 0x01cc */
 283         __u64   pp;                     /* 0x01de */
 284         __u8    reserved1e6[2];         /* 0x01e6 */
 285         __u64   itdba;                  /* 0x01e8 */
 286         __u64   riccbd;                 /* 0x01f0 */
 287         __u64   gvrd;                   /* 0x01f8 */
 288 } __attribute__((packed));
 289
 290 struct kvm_s390_itdb {
 291         __u8    data[256];
 292 };
 293
 294 struct sie_page {
 295         struct kvm_s390_sie_block sie_block;
 296         struct mcck_volatile_info mcck_info;    /* 0x0200 */
 297         __u8 reserved218[1000];         /* 0x0218 */
 298         struct kvm_s390_itdb itdb;      /* 0x0600 */
 299         __u8 reserved700[2304];         /* 0x0700 */
 300 };
 301
 302 struct kvm_vcpu_stat {
 303         u64 exit_userspace;
 304         u64 exit_null;
 305         u64 exit_external_request;
 306         u64 exit_io_request;
 307         u64 exit_external_interrupt;
 308         u64 exit_stop_request;
 309         u64 exit_validity;
 310         u64 exit_instruction;
 311         u64 exit_pei;
 312         u64 halt_successful_poll;
 313         u64 halt_attempted_poll;
 314         u64 halt_poll_invalid;
 315         u64 halt_wakeup;
 316         u64 instruction_lctl;
 317         u64 instruction_lctlg;
 318         u64 instruction_stctl;
 319         u64 instruction_stctg;
 320         u64 exit_program_interruption;
 321         u64 exit_instr_and_program;
 322         u64 exit_operation_exception;
 323         u64 deliver_ckc;
 324         u64 deliver_cputm;
 325         u64 deliver_external_call;
 326         u64 deliver_emergency_signal;
 327         u64 deliver_service_signal;
 328         u64 deliver_virtio;
 329         u64 deliver_stop_signal;
 330         u64 deliver_prefix_signal;
 331         u64 deliver_restart_signal;
 332         u64 deliver_program;
 333         u64 deliver_io;
 334         u64 deliver_machine_check;
 335         u64 exit_wait_state;
 336         u64 inject_ckc;
 337         u64 inject_cputm;
 338         u64 inject_external_call;
 339         u64 inject_emergency_signal;
 340         u64 inject_mchk;
 341         u64 inject_pfault_init;
 342         u64 inject_program;
 343         u64 inject_restart;
 344         u64 inject_set_prefix;
 345         u64 inject_stop_signal;
 346         u64 instruction_epsw;
 347         u64 instruction_gs;
 348         u64 instruction_io_other;
 349         u64 instruction_lpsw;
 350         u64 instruction_lpswe;
 351         u64 instruction_pfmf;
 352         u64 instruction_ptff;
 353         u64 instruction_sck;
 354         u64 instruction_sckpf;
 355         u64 instruction_stidp;
 356         u64 instruction_spx;
 357         u64 instruction_stpx;
 358         u64 instruction_stap;
 359         u64 instruction_iske;
 360         u64 instruction_ri;
 361         u64 instruction_rrbe;
 362         u64 instruction_sske;
 363         u64 instruction_ipte_interlock;
 364         u64 instruction_stsi;
 365         u64 instruction_stfl;
 366         u64 instruction_tb;
 367         u64 instruction_tpi;
 368         u64 instruction_tprot;
 369         u64 instruction_tsch;
 370         u64 instruction_sie;
 371         u64 instruction_essa;
 372         u64 instruction_sthyi;
 373         u64 instruction_sigp_sense;
 374         u64 instruction_sigp_sense_running;
 375         u64 instruction_sigp_external_call;
 376         u64 instruction_sigp_emergency;
 377         u64 instruction_sigp_cond_emergency;
 378         u64 instruction_sigp_start;
 379         u64 instruction_sigp_stop;
 380         u64 instruction_sigp_stop_store_status;
 381         u64 instruction_sigp_store_status;
 382         u64 instruction_sigp_store_adtl_status;
 383         u64 instruction_sigp_arch;
 384         u64 instruction_sigp_prefix;
 385         u64 instruction_sigp_restart;
 386         u64 instruction_sigp_init_cpu_reset;
 387         u64 instruction_sigp_cpu_reset;
 388         u64 instruction_sigp_unknown;
 389         u64 diagnose_10;
 390         u64 diagnose_44;
 391         u64 diagnose_9c;
 392         u64 diagnose_258;
 393         u64 diagnose_308;
 394         u64 diagnose_500;
 395         u64 diagnose_other;
 396 };
 397
 398 #define PGM_OPERATION                   0x01
 399 #define PGM_PRIVILEGED_OP               0x02
 400 #define PGM_EXECUTE                     0x03
 401 #define PGM_PROTECTION                  0x04
 402 #define PGM_ADDRESSING                  0x05
 403 #define PGM_SPECIFICATION               0x06
 404 #define PGM_DATA                        0x07
 405 #define PGM_FIXED_POINT_OVERFLOW        0x08
 406 #define PGM_FIXED_POINT_DIVIDE          0x09
 407 #define PGM_DECIMAL_OVERFLOW            0x0a
 408 #define PGM_DECIMAL_DIVIDE              0x0b
 409 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 410 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 411 #define PGM_HFP_SIGNIFICANCE            0x0e
 412 #define PGM_HFP_DIVIDE                  0x0f
 413 #define PGM_SEGMENT_TRANSLATION         0x10
 414 #define PGM_PAGE_TRANSLATION            0x11
 415 #define PGM_TRANSLATION_SPEC            0x12
 416 #define PGM_SPECIAL_OPERATION           0x13
 417 #define PGM_OPERAND                     0x15
 418 #define PGM_TRACE_TABEL                 0x16
 419 #define PGM_VECTOR_PROCESSING           0x1b
 420 #define PGM_SPACE_SWITCH                0x1c
 421 #define PGM_HFP_SQUARE_ROOT             0x1d
 422 #define PGM_PC_TRANSLATION_SPEC         0x1f
 423 #define PGM_AFX_TRANSLATION             0x20
 424 #define PGM_ASX_TRANSLATION             0x21
 425 #define PGM_LX_TRANSLATION              0x22
 426 #define PGM_EX_TRANSLATION              0x23
 427 #define PGM_PRIMARY_AUTHORITY           0x24
 428 #define PGM_SECONDARY_AUTHORITY         0x25
 429 #define PGM_LFX_TRANSLATION             0x26
 430 #define PGM_LSX_TRANSLATION             0x27
 431 #define PGM_ALET_SPECIFICATION          0x28
 432 #define PGM_ALEN_TRANSLATION            0x29
 433 #define PGM_ALE_SEQUENCE                0x2a
 434 #define PGM_ASTE_VALIDITY               0x2b
 435 #define PGM_ASTE_SEQUENCE               0x2c
 436 #define PGM_EXTENDED_AUTHORITY          0x2d
 437 #define PGM_LSTE_SEQUENCE               0x2e
 438 #define PGM_ASTE_INSTANCE               0x2f
 439 #define PGM_STACK_FULL                  0x30
 440 #define PGM_STACK_EMPTY                 0x31
 441 #define PGM_STACK_SPECIFICATION         0x32
 442 #define PGM_STACK_TYPE                  0x33
 443 #define PGM_STACK_OPERATION             0x34
 444 #define PGM_ASCE_TYPE                   0x38
 445 #define PGM_REGION_FIRST_TRANS          0x39
 446 #define PGM_REGION_SECOND_TRANS         0x3a
 447 #define PGM_REGION_THIRD_TRANS          0x3b
 448 #define PGM_MONITOR                     0x40
 449 #define PGM_PER                         0x80
 450 #define PGM_CRYPTO_OPERATION            0x119
 451
 452 /* irq types in ascend order of priorities */
 453 enum irq_types {
 454         IRQ_PEND_SET_PREFIX = 0,
 455         IRQ_PEND_RESTART,
 456         IRQ_PEND_SIGP_STOP,
 457         IRQ_PEND_IO_ISC_7,
 458         IRQ_PEND_IO_ISC_6,
 459         IRQ_PEND_IO_ISC_5,
 460         IRQ_PEND_IO_ISC_4,
 461         IRQ_PEND_IO_ISC_3,
 462         IRQ_PEND_IO_ISC_2,
 463         IRQ_PEND_IO_ISC_1,
 464         IRQ_PEND_IO_ISC_0,
 465         IRQ_PEND_VIRTIO,
 466         IRQ_PEND_PFAULT_DONE,
 467         IRQ_PEND_PFAULT_INIT,
 468         IRQ_PEND_EXT_HOST,
 469         IRQ_PEND_EXT_SERVICE,
 470         IRQ_PEND_EXT_TIMING,
 471         IRQ_PEND_EXT_CPU_TIMER,
 472         IRQ_PEND_EXT_CLOCK_COMP,
 473         IRQ_PEND_EXT_EXTERNAL,
 474         IRQ_PEND_EXT_EMERGENCY,
 475         IRQ_PEND_EXT_MALFUNC,
 476         IRQ_PEND_EXT_IRQ_KEY,
 477         IRQ_PEND_MCHK_REP,
 478         IRQ_PEND_PROG,
 479         IRQ_PEND_SVC,
 480         IRQ_PEND_MCHK_EX,
 481         IRQ_PEND_COUNT
 482 };
 483
 484 /* We have 2M for virtio device descriptor pages. Smallest amount of
 485  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 486  */
 487 #define KVM_S390_MAX_VIRTIO_IRQS 87381
 488
 489 /*
 490  * Repressible (non-floating) machine check interrupts
 491  * subclass bits in MCIC
 492  */
 493 #define MCHK_EXTD_BIT 58
 494 #define MCHK_DEGR_BIT 56
 495 #define MCHK_WARN_BIT 55
 496 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 497                        (1UL << MCHK_EXTD_BIT) | \
 498                        (1UL << MCHK_WARN_BIT))
 499
 500 /* Exigent machine check interrupts subclass bits in MCIC */
 501 #define MCHK_SD_BIT 63
 502 #define MCHK_PD_BIT 62
 503 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 504
 505 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 506                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 507                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 508                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 509                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 510                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 511                            (1UL << IRQ_PEND_EXT_TIMING)     | \
 512                            (1UL << IRQ_PEND_EXT_HOST)       | \
 513                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
 514                            (1UL << IRQ_PEND_VIRTIO)         | \
 515                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
 516                            (1UL << IRQ_PEND_PFAULT_DONE))
 517
 518 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 519                           (1UL << IRQ_PEND_IO_ISC_1) | \
 520                           (1UL << IRQ_PEND_IO_ISC_2) | \
 521                           (1UL << IRQ_PEND_IO_ISC_3) | \
 522                           (1UL << IRQ_PEND_IO_ISC_4) | \
 523                           (1UL << IRQ_PEND_IO_ISC_5) | \
 524                           (1UL << IRQ_PEND_IO_ISC_6) | \
 525                           (1UL << IRQ_PEND_IO_ISC_7))
 526
 527 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 528                             (1UL << IRQ_PEND_MCHK_EX))
 529
 530 struct kvm_s390_interrupt_info {
 531         struct list_head list;
 532         u64     type;
 533         union {
 534                 struct kvm_s390_io_info io;
 535                 struct kvm_s390_ext_info ext;
 536                 struct kvm_s390_pgm_info pgm;
 537                 struct kvm_s390_emerg_info emerg;
 538                 struct kvm_s390_extcall_info extcall;
 539                 struct kvm_s390_prefix_info prefix;
 540                 struct kvm_s390_stop_info stop;
 541                 struct kvm_s390_mchk_info mchk;
 542         };
 543 };
 544
 545 struct kvm_s390_irq_payload {
 546         struct kvm_s390_io_info io;
 547         struct kvm_s390_ext_info ext;
 548         struct kvm_s390_pgm_info pgm;
 549         struct kvm_s390_emerg_info emerg;
 550         struct kvm_s390_extcall_info extcall;
 551         struct kvm_s390_prefix_info prefix;
 552         struct kvm_s390_stop_info stop;
 553         struct kvm_s390_mchk_info mchk;
 554 };
 555
 556 struct kvm_s390_local_interrupt {
 557         spinlock_t lock;
 558         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 559         struct kvm_s390_irq_payload irq;
 560         unsigned long pending_irqs;
 561 };
 562
 563 #define FIRQ_LIST_IO_ISC_0 0
 564 #define FIRQ_LIST_IO_ISC_1 1
 565 #define FIRQ_LIST_IO_ISC_2 2
 566 #define FIRQ_LIST_IO_ISC_3 3
 567 #define FIRQ_LIST_IO_ISC_4 4
 568 #define FIRQ_LIST_IO_ISC_5 5
 569 #define FIRQ_LIST_IO_ISC_6 6
 570 #define FIRQ_LIST_IO_ISC_7 7
 571 #define FIRQ_LIST_PFAULT   8
 572 #define FIRQ_LIST_VIRTIO   9
 573 #define FIRQ_LIST_COUNT   10
 574 #define FIRQ_CNTR_IO       0
 575 #define FIRQ_CNTR_SERVICE  1
 576 #define FIRQ_CNTR_VIRTIO   2
 577 #define FIRQ_CNTR_PFAULT   3
 578 #define FIRQ_MAX_COUNT     4
 579
 580 /* mask the AIS mode for a given ISC */
 581 #define AIS_MODE_MASK(isc) (0x80 >> isc)
 582
 583 #define KVM_S390_AIS_MODE_ALL    0
 584 #define KVM_S390_AIS_MODE_SINGLE 1
 585
 586 struct kvm_s390_float_interrupt {
 587         unsigned long pending_irqs;
 588         spinlock_t lock;
 589         struct list_head lists[FIRQ_LIST_COUNT];
 590         int counters[FIRQ_MAX_COUNT];
 591         struct kvm_s390_mchk_info mchk;
 592         struct kvm_s390_ext_info srv_signal;
 593         int next_rr_cpu;
 594         struct mutex ais_lock;
 595         u8 simm;
 596         u8 nimm;
 597 };
 598
 599 struct kvm_hw_wp_info_arch {
 600         unsigned long addr;
 601         unsigned long phys_addr;
 602         int len;
 603         char *old_data;
 604 };
 605
 606 struct kvm_hw_bp_info_arch {
 607         unsigned long addr;
 608         int len;
 609 };
 610
 611 /*
 612  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 613  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 614  * arch/s390/include/uapi/asm/kvm.h
 615  */
 616 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 617
 618 #define guestdbg_enabled(vcpu) \
 619                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 620 #define guestdbg_sstep_enabled(vcpu) \
 621                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 622 #define guestdbg_hw_bp_enabled(vcpu) \
 623                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 624 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 625                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 626
 627 struct kvm_guestdbg_info_arch {
 628         unsigned long cr0;
 629         unsigned long cr9;
 630         unsigned long cr10;
 631         unsigned long cr11;
 632         struct kvm_hw_bp_info_arch *hw_bp_info;
 633         struct kvm_hw_wp_info_arch *hw_wp_info;
 634         int nr_hw_bp;
 635         int nr_hw_wp;
 636         unsigned long last_bp;
 637 };
 638
 639 struct kvm_vcpu_arch {
 640         struct kvm_s390_sie_block *sie_block;
 641         /* if vsie is active, currently executed shadow sie control block */
 642         struct kvm_s390_sie_block *vsie_block;
 643         unsigned int      host_acrs[NUM_ACRS];
 644         struct gs_cb      *host_gscb;
 645         struct fpu        host_fpregs;
 646         struct kvm_s390_local_interrupt local_int;
 647         struct hrtimer    ckc_timer;
 648         struct kvm_s390_pgm_info pgm;
 649         struct gmap *gmap;
 650         /* backup location for the currently enabled gmap when scheduled out */
 651         struct gmap *enabled_gmap;
 652         struct kvm_guestdbg_info_arch guestdbg;
 653         unsigned long pfault_token;
 654         unsigned long pfault_select;
 655         unsigned long pfault_compare;
 656         bool cputm_enabled;
 657         /*
 658          * The seqcount protects updates to cputm_start and sie_block.cputm,
 659          * this way we can have non-blocking reads with consistent values.
 660          * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
 661          * values and to start/stop/enable/disable cpu timer accounting.
 662          */
 663         seqcount_t cputm_seqcount;
 664         __u64 cputm_start;
 665         bool gs_enabled;
 666         bool skey_enabled;
 667 };
 668
 669 struct kvm_vm_stat {
 670         u64 inject_io;
 671         u64 inject_float_mchk;
 672         u64 inject_pfault_done;
 673         u64 inject_service_signal;
 674         u64 inject_virtio;
 675         u64 remote_tlb_flush;
 676 };
 677
 678 struct kvm_arch_memory_slot {
 679 };
 680
 681 struct s390_map_info {
 682         struct list_head list;
 683         __u64 guest_addr;
 684         __u64 addr;
 685         struct page *page;
 686 };
 687
 688 struct s390_io_adapter {
 689         unsigned int id;
 690         int isc;
 691         bool maskable;
 692         bool masked;
 693         bool swap;
 694         bool suppressible;
 695         struct rw_semaphore maps_lock;
 696         struct list_head maps;
 697         atomic_t nr_maps;
 698 };
 699
 700 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 701 #define MAX_S390_ADAPTER_MAPS 256
 702
 703 /* maximum size of facilities and facility mask is 2k bytes */
 704 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 705 #define S390_ARCH_FAC_LIST_SIZE_U64 \
 706         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 707 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 708 #define S390_ARCH_FAC_MASK_SIZE_U64 \
 709         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 710
 711 struct kvm_s390_cpu_model {
 712         /* facility mask supported by kvm & hosting machine */
 713         __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
 714         struct kvm_s390_vm_cpu_subfunc subfuncs;
 715         /* facility list requested by guest (in dma page) */
 716         __u64 *fac_list;
 717         u64 cpuid;
 718         unsigned short ibc;
 719 };
 720
 721 struct kvm_s390_crypto {
 722         struct kvm_s390_crypto_cb *crycb;
 723         __u32 crycbd;
 724         __u8 aes_kw;
 725         __u8 dea_kw;
 726         __u8 apie;
 727 };
 728
 729 #define APCB0_MASK_SIZE 1
 730 struct kvm_s390_apcb0 {
 731         __u64 apm[APCB0_MASK_SIZE];             /* 0x0000 */
 732         __u64 aqm[APCB0_MASK_SIZE];             /* 0x0008 */
 733         __u64 adm[APCB0_MASK_SIZE];             /* 0x0010 */
 734         __u64 reserved18;                       /* 0x0018 */
 735 };
 736
 737 #define APCB1_MASK_SIZE 4
 738 struct kvm_s390_apcb1 {
 739         __u64 apm[APCB1_MASK_SIZE];             /* 0x0000 */
 740         __u64 aqm[APCB1_MASK_SIZE];             /* 0x0020 */
 741         __u64 adm[APCB1_MASK_SIZE];             /* 0x0040 */
 742         __u64 reserved60[4];                    /* 0x0060 */
 743 };
 744
 745 struct kvm_s390_crypto_cb {
 746         struct kvm_s390_apcb0 apcb0;            /* 0x0000 */
 747         __u8   reserved20[0x0048 - 0x0020];     /* 0x0020 */
 748         __u8   dea_wrapping_key_mask[24];       /* 0x0048 */
 749         __u8   aes_wrapping_key_mask[32];       /* 0x0060 */
 750         struct kvm_s390_apcb1 apcb1;            /* 0x0080 */
 751 };
 752
 753 struct kvm_s390_gisa {
 754         union {
 755                 struct { /* common to all formats */
 756                         u32 next_alert;
 757                         u8  ipm;
 758                         u8  reserved01[2];
 759                         u8  iam;
 760                 };
 761                 struct { /* format 0 */
 762                         u32 next_alert;
 763                         u8  ipm;
 764                         u8  reserved01;
 765                         u8  : 6;
 766                         u8  g : 1;
 767                         u8  c : 1;
 768                         u8  iam;
 769                         u8  reserved02[4];
 770                         u32 airq_count;
 771                 } g0;
 772                 struct { /* format 1 */
 773                         u32 next_alert;
 774                         u8  ipm;
 775                         u8  simm;
 776                         u8  nimm;
 777                         u8  iam;
 778                         u8  aism[8];
 779                         u8  : 6;
 780                         u8  g : 1;
 781                         u8  c : 1;
 782                         u8  reserved03[11];
 783                         u32 airq_count;
 784                 } g1;
 785                 struct {
 786                         u64 word[4];
 787                 } u64;
 788         };
 789 };
 790
 791 struct kvm_s390_gib {
 792         u32 alert_list_origin;
 793         u32 reserved01;
 794         u8:5;
 795         u8  nisc:3;
 796         u8  reserved03[3];
 797         u32 reserved04[5];
 798 };
 799
 800 /*
 801  * sie_page2 has to be allocated as DMA because fac_list, crycb and
 802  * gisa need 31bit addresses in the sie control block.
 803  */
 804 struct sie_page2 {
 805         __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
 806         struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
 807         struct kvm_s390_gisa gisa;                      /* 0x0900 */
 808         struct kvm *kvm;                                /* 0x0920 */
 809         u8 reserved928[0x1000 - 0x928];                 /* 0x0928 */
 810 };
 811
 812 struct kvm_s390_vsie {
 813         struct mutex mutex;
 814         struct radix_tree_root addr_to_page;
 815         int page_count;
 816         int next;
 817         struct page *pages[KVM_MAX_VCPUS];
 818 };
 819
 820 struct kvm_s390_gisa_iam {
 821         u8 mask;
 822         spinlock_t ref_lock;
 823         u32 ref_count[MAX_ISC + 1];
 824 };
 825
 826 struct kvm_s390_gisa_interrupt {
 827         struct kvm_s390_gisa *origin;
 828         struct kvm_s390_gisa_iam alert;
 829         struct hrtimer timer;
 830         u64 expires;
 831         DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
 832 };
 833
 834 struct kvm_arch{
 835         void *sca;
 836         int use_esca;
 837         rwlock_t sca_lock;
 838         debug_info_t *dbf;
 839         struct kvm_s390_float_interrupt float_int;
 840         struct kvm_device *flic;
 841         struct gmap *gmap;
 842         unsigned long mem_limit;
 843         int css_support;
 844         int use_irqchip;
 845         int use_cmma;
 846         int use_pfmfi;
 847         int use_skf;
 848         int user_cpu_state_ctrl;
 849         int user_sigp;
 850         int user_stsi;
 851         int user_instr0;
 852         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 853         wait_queue_head_t ipte_wq;
 854         int ipte_lock_count;
 855         struct mutex ipte_mutex;
 856         spinlock_t start_stop_lock;
 857         struct sie_page2 *sie_page2;
 858         struct kvm_s390_cpu_model model;
 859         struct kvm_s390_crypto crypto;
 860         struct kvm_s390_vsie vsie;
 861         u8 epdx;
 862         u64 epoch;
 863         int migration_mode;
 864         atomic64_t cmma_dirty_pages;
 865         /* subset of available cpu features enabled by user space */
 866         DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
 867         DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
 868         struct kvm_s390_gisa_interrupt gisa_int;
 869 };
 870
 871 #define KVM_HVA_ERR_BAD         (-1UL)
 872 #define KVM_HVA_ERR_RO_BAD      (-2UL)
 873
 874 static inline bool kvm_is_error_hva(unsigned long addr)
 875 {
 876         return IS_ERR_VALUE(addr);
 877 }
 878
 879 #define ASYNC_PF_PER_VCPU       64
 880 struct kvm_arch_async_pf {
 881         unsigned long pfault_token;
 882 };
 883
 884 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 885
 886 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 887                                struct kvm_async_pf *work);
 888
 889 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 890                                      struct kvm_async_pf *work);
 891
 892 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 893                                  struct kvm_async_pf *work);
 894
 895 void kvm_arch_crypto_clear_masks(struct kvm *kvm);
 896 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
 897                                unsigned long *aqm, unsigned long *adm);
 898
 899 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 900 extern char sie_exit;
 901
 902 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
 903 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
 904
 905 static inline void kvm_arch_hardware_disable(void) {}
 906 static inline void kvm_arch_check_processor_compat(void *rtn) {}
 907 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 908 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
 909 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 910 static inline void kvm_arch_free_memslot(struct kvm *kvm,
 911                 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
 912 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
 913 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 914 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
 915                 struct kvm_memory_slot *slot) {}
 916 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
 917 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
 918
 919 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
 920
 921 #endif