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 <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
  32 /*
  33  * These seem to be used for allocating ->chip in the routing table, which we
  34  * don't use. 1 is as small as we can get to reduce the needed memory. If we
  35  * need 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 1
  39 #define KVM_HALT_POLL_NS_DEFAULT 50000
  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 CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
 125                           CR0_MEASUREMENT_ALERT_SUBMASK)
 126 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
 127                            CR14_EXTERNAL_DAMAGE_SUBMASK)
 128
 129 #define SIDAD_SIZE_MASK         0xff
 130 #define sida_origin(sie_block) \
 131         ((sie_block)->sidad & PAGE_MASK)
 132 #define sida_size(sie_block) \
 133         ((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE)
 134
 135 #define CPUSTAT_STOPPED    0x80000000
 136 #define CPUSTAT_WAIT       0x10000000
 137 #define CPUSTAT_ECALL_PEND 0x08000000
 138 #define CPUSTAT_STOP_INT   0x04000000
 139 #define CPUSTAT_IO_INT     0x02000000
 140 #define CPUSTAT_EXT_INT    0x01000000
 141 #define CPUSTAT_RUNNING    0x00800000
 142 #define CPUSTAT_RETAINED   0x00400000
 143 #define CPUSTAT_TIMING_SUB 0x00020000
 144 #define CPUSTAT_SIE_SUB    0x00010000
 145 #define CPUSTAT_RRF        0x00008000
 146 #define CPUSTAT_SLSV       0x00004000
 147 #define CPUSTAT_SLSR       0x00002000
 148 #define CPUSTAT_ZARCH      0x00000800
 149 #define CPUSTAT_MCDS       0x00000100
 150 #define CPUSTAT_KSS        0x00000200
 151 #define CPUSTAT_SM         0x00000080
 152 #define CPUSTAT_IBS        0x00000040
 153 #define CPUSTAT_GED2       0x00000010
 154 #define CPUSTAT_G          0x00000008
 155 #define CPUSTAT_GED        0x00000004
 156 #define CPUSTAT_J          0x00000002
 157 #define CPUSTAT_P          0x00000001
 158
 159 struct kvm_s390_sie_block {
 160         atomic_t cpuflags;              /* 0x0000 */
 161         __u32 : 1;                      /* 0x0004 */
 162         __u32 prefix : 18;
 163         __u32 : 1;
 164         __u32 ibc : 12;
 165         __u8    reserved08[4];          /* 0x0008 */
 166 #define PROG_IN_SIE (1<<0)
 167         __u32   prog0c;                 /* 0x000c */
 168         union {
 169                 __u8    reserved10[16];         /* 0x0010 */
 170                 struct {
 171                         __u64   pv_handle_cpu;
 172                         __u64   pv_handle_config;
 173                 };
 174         };
 175 #define PROG_BLOCK_SIE  (1<<0)
 176 #define PROG_REQUEST    (1<<1)
 177         atomic_t prog20;                /* 0x0020 */
 178         __u8    reserved24[4];          /* 0x0024 */
 179         __u64   cputm;                  /* 0x0028 */
 180         __u64   ckc;                    /* 0x0030 */
 181         __u64   epoch;                  /* 0x0038 */
 182         __u32   svcc;                   /* 0x0040 */
 183 #define LCTL_CR0        0x8000
 184 #define LCTL_CR6        0x0200
 185 #define LCTL_CR9        0x0040
 186 #define LCTL_CR10       0x0020
 187 #define LCTL_CR11       0x0010
 188 #define LCTL_CR14       0x0002
 189         __u16   lctl;                   /* 0x0044 */
 190         __s16   icpua;                  /* 0x0046 */
 191 #define ICTL_OPEREXC    0x80000000
 192 #define ICTL_PINT       0x20000000
 193 #define ICTL_LPSW       0x00400000
 194 #define ICTL_STCTL      0x00040000
 195 #define ICTL_ISKE       0x00004000
 196 #define ICTL_SSKE       0x00002000
 197 #define ICTL_RRBE       0x00001000
 198 #define ICTL_TPROT      0x00000200
 199         __u32   ictl;                   /* 0x0048 */
 200 #define ECA_CEI         0x80000000
 201 #define ECA_IB          0x40000000
 202 #define ECA_SIGPI       0x10000000
 203 #define ECA_MVPGI       0x01000000
 204 #define ECA_AIV         0x00200000
 205 #define ECA_VX          0x00020000
 206 #define ECA_PROTEXCI    0x00002000
 207 #define ECA_APIE        0x00000008
 208 #define ECA_SII         0x00000001
 209         __u32   eca;                    /* 0x004c */
 210 #define ICPT_INST       0x04
 211 #define ICPT_PROGI      0x08
 212 #define ICPT_INSTPROGI  0x0C
 213 #define ICPT_EXTREQ     0x10
 214 #define ICPT_EXTINT     0x14
 215 #define ICPT_IOREQ      0x18
 216 #define ICPT_WAIT       0x1c
 217 #define ICPT_VALIDITY   0x20
 218 #define ICPT_STOP       0x28
 219 #define ICPT_OPEREXC    0x2C
 220 #define ICPT_PARTEXEC   0x38
 221 #define ICPT_IOINST     0x40
 222 #define ICPT_KSS        0x5c
 223 #define ICPT_MCHKREQ    0x60
 224 #define ICPT_INT_ENABLE 0x64
 225 #define ICPT_PV_INSTR   0x68
 226 #define ICPT_PV_NOTIFY  0x6c
 227 #define ICPT_PV_PREF    0x70
 228         __u8    icptcode;               /* 0x0050 */
 229         __u8    icptstatus;             /* 0x0051 */
 230         __u16   ihcpu;                  /* 0x0052 */
 231         __u8    reserved54;             /* 0x0054 */
 232 #define IICTL_CODE_NONE          0x00
 233 #define IICTL_CODE_MCHK          0x01
 234 #define IICTL_CODE_EXT           0x02
 235 #define IICTL_CODE_IO            0x03
 236 #define IICTL_CODE_RESTART       0x04
 237 #define IICTL_CODE_SPECIFICATION 0x10
 238 #define IICTL_CODE_OPERAND       0x11
 239         __u8    iictl;                  /* 0x0055 */
 240         __u16   ipa;                    /* 0x0056 */
 241         __u32   ipb;                    /* 0x0058 */
 242         __u32   scaoh;                  /* 0x005c */
 243 #define FPF_BPBC        0x20
 244         __u8    fpf;                    /* 0x0060 */
 245 #define ECB_GS          0x40
 246 #define ECB_TE          0x10
 247 #define ECB_SPECI       0x08
 248 #define ECB_SRSI        0x04
 249 #define ECB_HOSTPROTINT 0x02
 250         __u8    ecb;                    /* 0x0061 */
 251 #define ECB2_CMMA       0x80
 252 #define ECB2_IEP        0x20
 253 #define ECB2_PFMFI      0x08
 254 #define ECB2_ESCA       0x04
 255         __u8    ecb2;                   /* 0x0062 */
 256 #define ECB3_DEA 0x08
 257 #define ECB3_AES 0x04
 258 #define ECB3_RI  0x01
 259         __u8    ecb3;                   /* 0x0063 */
 260         __u32   scaol;                  /* 0x0064 */
 261         __u8    sdf;                    /* 0x0068 */
 262         __u8    epdx;                   /* 0x0069 */
 263         __u8    cpnc;                   /* 0x006a */
 264         __u8    reserved6b;             /* 0x006b */
 265         __u32   todpr;                  /* 0x006c */
 266 #define GISA_FORMAT1 0x00000001
 267         __u32   gd;                     /* 0x0070 */
 268         __u8    reserved74[12];         /* 0x0074 */
 269         __u64   mso;                    /* 0x0080 */
 270         __u64   msl;                    /* 0x0088 */
 271         psw_t   gpsw;                   /* 0x0090 */
 272         __u64   gg14;                   /* 0x00a0 */
 273         __u64   gg15;                   /* 0x00a8 */
 274         __u8    reservedb0[8];          /* 0x00b0 */
 275 #define HPID_KVM        0x4
 276 #define HPID_VSIE       0x5
 277         __u8    hpid;                   /* 0x00b8 */
 278         __u8    reservedb9[7];          /* 0x00b9 */
 279         union {
 280                 struct {
 281                         __u32   eiparams;       /* 0x00c0 */
 282                         __u16   extcpuaddr;     /* 0x00c4 */
 283                         __u16   eic;            /* 0x00c6 */
 284                 };
 285                 __u64   mcic;                   /* 0x00c0 */
 286         } __packed;
 287         __u32   reservedc8;             /* 0x00c8 */
 288         union {
 289                 struct {
 290                         __u16   pgmilc;         /* 0x00cc */
 291                         __u16   iprcc;          /* 0x00ce */
 292                 };
 293                 __u32   edc;                    /* 0x00cc */
 294         } __packed;
 295         union {
 296                 struct {
 297                         __u32   dxc;            /* 0x00d0 */
 298                         __u16   mcn;            /* 0x00d4 */
 299                         __u8    perc;           /* 0x00d6 */
 300                         __u8    peratmid;       /* 0x00d7 */
 301                 };
 302                 __u64   faddr;                  /* 0x00d0 */
 303         } __packed;
 304         __u64   peraddr;                /* 0x00d8 */
 305         __u8    eai;                    /* 0x00e0 */
 306         __u8    peraid;                 /* 0x00e1 */
 307         __u8    oai;                    /* 0x00e2 */
 308         __u8    armid;                  /* 0x00e3 */
 309         __u8    reservede4[4];          /* 0x00e4 */
 310         union {
 311                 __u64   tecmc;          /* 0x00e8 */
 312                 struct {
 313                         __u16   subchannel_id;  /* 0x00e8 */
 314                         __u16   subchannel_nr;  /* 0x00ea */
 315                         __u32   io_int_parm;    /* 0x00ec */
 316                         __u32   io_int_word;    /* 0x00f0 */
 317                 };
 318         } __packed;
 319         __u8    reservedf4[8];          /* 0x00f4 */
 320 #define CRYCB_FORMAT_MASK 0x00000003
 321 #define CRYCB_FORMAT0 0x00000000
 322 #define CRYCB_FORMAT1 0x00000001
 323 #define CRYCB_FORMAT2 0x00000003
 324         __u32   crycbd;                 /* 0x00fc */
 325         __u64   gcr[16];                /* 0x0100 */
 326         union {
 327                 __u64   gbea;           /* 0x0180 */
 328                 __u64   sidad;
 329         };
 330         __u8    reserved188[8];         /* 0x0188 */
 331         __u64   sdnxo;                  /* 0x0190 */
 332         __u8    reserved198[8];         /* 0x0198 */
 333         __u32   fac;                    /* 0x01a0 */
 334         __u8    reserved1a4[20];        /* 0x01a4 */
 335         __u64   cbrlo;                  /* 0x01b8 */
 336         __u8    reserved1c0[8];         /* 0x01c0 */
 337 #define ECD_HOSTREGMGMT 0x20000000
 338 #define ECD_MEF         0x08000000
 339 #define ECD_ETOKENF     0x02000000
 340 #define ECD_ECC         0x00200000
 341         __u32   ecd;                    /* 0x01c8 */
 342         __u8    reserved1cc[18];        /* 0x01cc */
 343         __u64   pp;                     /* 0x01de */
 344         __u8    reserved1e6[2];         /* 0x01e6 */
 345         __u64   itdba;                  /* 0x01e8 */
 346         __u64   riccbd;                 /* 0x01f0 */
 347         __u64   gvrd;                   /* 0x01f8 */
 348 } __packed __aligned(512);
 349
 350 struct kvm_s390_itdb {
 351         __u8    data[256];
 352 };
 353
 354 struct sie_page {
 355         struct kvm_s390_sie_block sie_block;
 356         struct mcck_volatile_info mcck_info;    /* 0x0200 */
 357         __u8 reserved218[360];          /* 0x0218 */
 358         __u64 pv_grregs[16];            /* 0x0380 */
 359         __u8 reserved400[512];          /* 0x0400 */
 360         struct kvm_s390_itdb itdb;      /* 0x0600 */
 361         __u8 reserved700[2304];         /* 0x0700 */
 362 };
 363
 364 struct kvm_vcpu_stat {
 365         struct kvm_vcpu_stat_generic generic;
 366         u64 exit_userspace;
 367         u64 exit_null;
 368         u64 exit_external_request;
 369         u64 exit_io_request;
 370         u64 exit_external_interrupt;
 371         u64 exit_stop_request;
 372         u64 exit_validity;
 373         u64 exit_instruction;
 374         u64 exit_pei;
 375         u64 halt_no_poll_steal;
 376         u64 instruction_lctl;
 377         u64 instruction_lctlg;
 378         u64 instruction_stctl;
 379         u64 instruction_stctg;
 380         u64 exit_program_interruption;
 381         u64 exit_instr_and_program;
 382         u64 exit_operation_exception;
 383         u64 deliver_ckc;
 384         u64 deliver_cputm;
 385         u64 deliver_external_call;
 386         u64 deliver_emergency_signal;
 387         u64 deliver_service_signal;
 388         u64 deliver_virtio;
 389         u64 deliver_stop_signal;
 390         u64 deliver_prefix_signal;
 391         u64 deliver_restart_signal;
 392         u64 deliver_program;
 393         u64 deliver_io;
 394         u64 deliver_machine_check;
 395         u64 exit_wait_state;
 396         u64 inject_ckc;
 397         u64 inject_cputm;
 398         u64 inject_external_call;
 399         u64 inject_emergency_signal;
 400         u64 inject_mchk;
 401         u64 inject_pfault_init;
 402         u64 inject_program;
 403         u64 inject_restart;
 404         u64 inject_set_prefix;
 405         u64 inject_stop_signal;
 406         u64 instruction_epsw;
 407         u64 instruction_gs;
 408         u64 instruction_io_other;
 409         u64 instruction_lpsw;
 410         u64 instruction_lpswe;
 411         u64 instruction_pfmf;
 412         u64 instruction_ptff;
 413         u64 instruction_sck;
 414         u64 instruction_sckpf;
 415         u64 instruction_stidp;
 416         u64 instruction_spx;
 417         u64 instruction_stpx;
 418         u64 instruction_stap;
 419         u64 instruction_iske;
 420         u64 instruction_ri;
 421         u64 instruction_rrbe;
 422         u64 instruction_sske;
 423         u64 instruction_ipte_interlock;
 424         u64 instruction_stsi;
 425         u64 instruction_stfl;
 426         u64 instruction_tb;
 427         u64 instruction_tpi;
 428         u64 instruction_tprot;
 429         u64 instruction_tsch;
 430         u64 instruction_sie;
 431         u64 instruction_essa;
 432         u64 instruction_sthyi;
 433         u64 instruction_sigp_sense;
 434         u64 instruction_sigp_sense_running;
 435         u64 instruction_sigp_external_call;
 436         u64 instruction_sigp_emergency;
 437         u64 instruction_sigp_cond_emergency;
 438         u64 instruction_sigp_start;
 439         u64 instruction_sigp_stop;
 440         u64 instruction_sigp_stop_store_status;
 441         u64 instruction_sigp_store_status;
 442         u64 instruction_sigp_store_adtl_status;
 443         u64 instruction_sigp_arch;
 444         u64 instruction_sigp_prefix;
 445         u64 instruction_sigp_restart;
 446         u64 instruction_sigp_init_cpu_reset;
 447         u64 instruction_sigp_cpu_reset;
 448         u64 instruction_sigp_unknown;
 449         u64 instruction_diagnose_10;
 450         u64 instruction_diagnose_44;
 451         u64 instruction_diagnose_9c;
 452         u64 diag_9c_ignored;
 453         u64 diag_9c_forward;
 454         u64 instruction_diagnose_258;
 455         u64 instruction_diagnose_308;
 456         u64 instruction_diagnose_500;
 457         u64 instruction_diagnose_other;
 458         u64 pfault_sync;
 459 };
 460
 461 #define PGM_OPERATION                   0x01
 462 #define PGM_PRIVILEGED_OP               0x02
 463 #define PGM_EXECUTE                     0x03
 464 #define PGM_PROTECTION                  0x04
 465 #define PGM_ADDRESSING                  0x05
 466 #define PGM_SPECIFICATION               0x06
 467 #define PGM_DATA                        0x07
 468 #define PGM_FIXED_POINT_OVERFLOW        0x08
 469 #define PGM_FIXED_POINT_DIVIDE          0x09
 470 #define PGM_DECIMAL_OVERFLOW            0x0a
 471 #define PGM_DECIMAL_DIVIDE              0x0b
 472 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 473 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 474 #define PGM_HFP_SIGNIFICANCE            0x0e
 475 #define PGM_HFP_DIVIDE                  0x0f
 476 #define PGM_SEGMENT_TRANSLATION         0x10
 477 #define PGM_PAGE_TRANSLATION            0x11
 478 #define PGM_TRANSLATION_SPEC            0x12
 479 #define PGM_SPECIAL_OPERATION           0x13
 480 #define PGM_OPERAND                     0x15
 481 #define PGM_TRACE_TABEL                 0x16
 482 #define PGM_VECTOR_PROCESSING           0x1b
 483 #define PGM_SPACE_SWITCH                0x1c
 484 #define PGM_HFP_SQUARE_ROOT             0x1d
 485 #define PGM_PC_TRANSLATION_SPEC         0x1f
 486 #define PGM_AFX_TRANSLATION             0x20
 487 #define PGM_ASX_TRANSLATION             0x21
 488 #define PGM_LX_TRANSLATION              0x22
 489 #define PGM_EX_TRANSLATION              0x23
 490 #define PGM_PRIMARY_AUTHORITY           0x24
 491 #define PGM_SECONDARY_AUTHORITY         0x25
 492 #define PGM_LFX_TRANSLATION             0x26
 493 #define PGM_LSX_TRANSLATION             0x27
 494 #define PGM_ALET_SPECIFICATION          0x28
 495 #define PGM_ALEN_TRANSLATION            0x29
 496 #define PGM_ALE_SEQUENCE                0x2a
 497 #define PGM_ASTE_VALIDITY               0x2b
 498 #define PGM_ASTE_SEQUENCE               0x2c
 499 #define PGM_EXTENDED_AUTHORITY          0x2d
 500 #define PGM_LSTE_SEQUENCE               0x2e
 501 #define PGM_ASTE_INSTANCE               0x2f
 502 #define PGM_STACK_FULL                  0x30
 503 #define PGM_STACK_EMPTY                 0x31
 504 #define PGM_STACK_SPECIFICATION         0x32
 505 #define PGM_STACK_TYPE                  0x33
 506 #define PGM_STACK_OPERATION             0x34
 507 #define PGM_ASCE_TYPE                   0x38
 508 #define PGM_REGION_FIRST_TRANS          0x39
 509 #define PGM_REGION_SECOND_TRANS         0x3a
 510 #define PGM_REGION_THIRD_TRANS          0x3b
 511 #define PGM_MONITOR                     0x40
 512 #define PGM_PER                         0x80
 513 #define PGM_CRYPTO_OPERATION            0x119
 514
 515 /* irq types in ascend order of priorities */
 516 enum irq_types {
 517         IRQ_PEND_SET_PREFIX = 0,
 518         IRQ_PEND_RESTART,
 519         IRQ_PEND_SIGP_STOP,
 520         IRQ_PEND_IO_ISC_7,
 521         IRQ_PEND_IO_ISC_6,
 522         IRQ_PEND_IO_ISC_5,
 523         IRQ_PEND_IO_ISC_4,
 524         IRQ_PEND_IO_ISC_3,
 525         IRQ_PEND_IO_ISC_2,
 526         IRQ_PEND_IO_ISC_1,
 527         IRQ_PEND_IO_ISC_0,
 528         IRQ_PEND_VIRTIO,
 529         IRQ_PEND_PFAULT_DONE,
 530         IRQ_PEND_PFAULT_INIT,
 531         IRQ_PEND_EXT_HOST,
 532         IRQ_PEND_EXT_SERVICE,
 533         IRQ_PEND_EXT_SERVICE_EV,
 534         IRQ_PEND_EXT_TIMING,
 535         IRQ_PEND_EXT_CPU_TIMER,
 536         IRQ_PEND_EXT_CLOCK_COMP,
 537         IRQ_PEND_EXT_EXTERNAL,
 538         IRQ_PEND_EXT_EMERGENCY,
 539         IRQ_PEND_EXT_MALFUNC,
 540         IRQ_PEND_EXT_IRQ_KEY,
 541         IRQ_PEND_MCHK_REP,
 542         IRQ_PEND_PROG,
 543         IRQ_PEND_SVC,
 544         IRQ_PEND_MCHK_EX,
 545         IRQ_PEND_COUNT
 546 };
 547
 548 /* We have 2M for virtio device descriptor pages. Smallest amount of
 549  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 550  */
 551 #define KVM_S390_MAX_VIRTIO_IRQS 87381
 552
 553 /*
 554  * Repressible (non-floating) machine check interrupts
 555  * subclass bits in MCIC
 556  */
 557 #define MCHK_EXTD_BIT 58
 558 #define MCHK_DEGR_BIT 56
 559 #define MCHK_WARN_BIT 55
 560 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 561                        (1UL << MCHK_EXTD_BIT) | \
 562                        (1UL << MCHK_WARN_BIT))
 563
 564 /* Exigent machine check interrupts subclass bits in MCIC */
 565 #define MCHK_SD_BIT 63
 566 #define MCHK_PD_BIT 62
 567 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 568
 569 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 570                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 571                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 572                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 573                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 574                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 575                            (1UL << IRQ_PEND_EXT_TIMING)     | \
 576                            (1UL << IRQ_PEND_EXT_HOST)       | \
 577                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
 578                            (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
 579                            (1UL << IRQ_PEND_VIRTIO)         | \
 580                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
 581                            (1UL << IRQ_PEND_PFAULT_DONE))
 582
 583 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 584                           (1UL << IRQ_PEND_IO_ISC_1) | \
 585                           (1UL << IRQ_PEND_IO_ISC_2) | \
 586                           (1UL << IRQ_PEND_IO_ISC_3) | \
 587                           (1UL << IRQ_PEND_IO_ISC_4) | \
 588                           (1UL << IRQ_PEND_IO_ISC_5) | \
 589                           (1UL << IRQ_PEND_IO_ISC_6) | \
 590                           (1UL << IRQ_PEND_IO_ISC_7))
 591
 592 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 593                             (1UL << IRQ_PEND_MCHK_EX))
 594
 595 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 596                               (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 597                               (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 598                               (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 599                               (1UL << IRQ_PEND_EXT_SERVICE)    | \
 600                               (1UL << IRQ_PEND_EXT_SERVICE_EV))
 601
 602 struct kvm_s390_interrupt_info {
 603         struct list_head list;
 604         u64     type;
 605         union {
 606                 struct kvm_s390_io_info io;
 607                 struct kvm_s390_ext_info ext;
 608                 struct kvm_s390_pgm_info pgm;
 609                 struct kvm_s390_emerg_info emerg;
 610                 struct kvm_s390_extcall_info extcall;
 611                 struct kvm_s390_prefix_info prefix;
 612                 struct kvm_s390_stop_info stop;
 613                 struct kvm_s390_mchk_info mchk;
 614         };
 615 };
 616
 617 struct kvm_s390_irq_payload {
 618         struct kvm_s390_io_info io;
 619         struct kvm_s390_ext_info ext;
 620         struct kvm_s390_pgm_info pgm;
 621         struct kvm_s390_emerg_info emerg;
 622         struct kvm_s390_extcall_info extcall;
 623         struct kvm_s390_prefix_info prefix;
 624         struct kvm_s390_stop_info stop;
 625         struct kvm_s390_mchk_info mchk;
 626 };
 627
 628 struct kvm_s390_local_interrupt {
 629         spinlock_t lock;
 630         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 631         struct kvm_s390_irq_payload irq;
 632         unsigned long pending_irqs;
 633 };
 634
 635 #define FIRQ_LIST_IO_ISC_0 0
 636 #define FIRQ_LIST_IO_ISC_1 1
 637 #define FIRQ_LIST_IO_ISC_2 2
 638 #define FIRQ_LIST_IO_ISC_3 3
 639 #define FIRQ_LIST_IO_ISC_4 4
 640 #define FIRQ_LIST_IO_ISC_5 5
 641 #define FIRQ_LIST_IO_ISC_6 6
 642 #define FIRQ_LIST_IO_ISC_7 7
 643 #define FIRQ_LIST_PFAULT   8
 644 #define FIRQ_LIST_VIRTIO   9
 645 #define FIRQ_LIST_COUNT   10
 646 #define FIRQ_CNTR_IO       0
 647 #define FIRQ_CNTR_SERVICE  1
 648 #define FIRQ_CNTR_VIRTIO   2
 649 #define FIRQ_CNTR_PFAULT   3
 650 #define FIRQ_MAX_COUNT     4
 651
 652 /* mask the AIS mode for a given ISC */
 653 #define AIS_MODE_MASK(isc) (0x80 >> isc)
 654
 655 #define KVM_S390_AIS_MODE_ALL    0
 656 #define KVM_S390_AIS_MODE_SINGLE 1
 657
 658 struct kvm_s390_float_interrupt {
 659         unsigned long pending_irqs;
 660         unsigned long masked_irqs;
 661         spinlock_t lock;
 662         struct list_head lists[FIRQ_LIST_COUNT];
 663         int counters[FIRQ_MAX_COUNT];
 664         struct kvm_s390_mchk_info mchk;
 665         struct kvm_s390_ext_info srv_signal;
 666         int next_rr_cpu;
 667         struct mutex ais_lock;
 668         u8 simm;
 669         u8 nimm;
 670 };
 671
 672 struct kvm_hw_wp_info_arch {
 673         unsigned long addr;
 674         unsigned long phys_addr;
 675         int len;
 676         char *old_data;
 677 };
 678
 679 struct kvm_hw_bp_info_arch {
 680         unsigned long addr;
 681         int len;
 682 };
 683
 684 /*
 685  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 686  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 687  * arch/s390/include/uapi/asm/kvm.h
 688  */
 689 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 690
 691 #define guestdbg_enabled(vcpu) \
 692                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 693 #define guestdbg_sstep_enabled(vcpu) \
 694                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 695 #define guestdbg_hw_bp_enabled(vcpu) \
 696                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 697 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 698                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 699
 700 #define KVM_GUESTDBG_VALID_MASK \
 701                 (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\
 702                 KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING)
 703
 704 struct kvm_guestdbg_info_arch {
 705         unsigned long cr0;
 706         unsigned long cr9;
 707         unsigned long cr10;
 708         unsigned long cr11;
 709         struct kvm_hw_bp_info_arch *hw_bp_info;
 710         struct kvm_hw_wp_info_arch *hw_wp_info;
 711         int nr_hw_bp;
 712         int nr_hw_wp;
 713         unsigned long last_bp;
 714 };
 715
 716 struct kvm_s390_pv_vcpu {
 717         u64 handle;
 718         unsigned long stor_base;
 719 };
 720
 721 struct kvm_vcpu_arch {
 722         struct kvm_s390_sie_block *sie_block;
 723         /* if vsie is active, currently executed shadow sie control block */
 724         struct kvm_s390_sie_block *vsie_block;
 725         unsigned int      host_acrs[NUM_ACRS];
 726         struct gs_cb      *host_gscb;
 727         struct fpu        host_fpregs;
 728         struct kvm_s390_local_interrupt local_int;
 729         struct hrtimer    ckc_timer;
 730         struct kvm_s390_pgm_info pgm;
 731         struct gmap *gmap;
 732         /* backup location for the currently enabled gmap when scheduled out */
 733         struct gmap *enabled_gmap;
 734         struct kvm_guestdbg_info_arch guestdbg;
 735         unsigned long pfault_token;
 736         unsigned long pfault_select;
 737         unsigned long pfault_compare;
 738         bool cputm_enabled;
 739         /*
 740          * The seqcount protects updates to cputm_start and sie_block.cputm,
 741          * this way we can have non-blocking reads with consistent values.
 742          * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
 743          * values and to start/stop/enable/disable cpu timer accounting.
 744          */
 745         seqcount_t cputm_seqcount;
 746         __u64 cputm_start;
 747         bool gs_enabled;
 748         bool skey_enabled;
 749         struct kvm_s390_pv_vcpu pv;
 750         union diag318_info diag318_info;
 751 };
 752
 753 struct kvm_vm_stat {
 754         struct kvm_vm_stat_generic generic;
 755         u64 inject_io;
 756         u64 inject_float_mchk;
 757         u64 inject_pfault_done;
 758         u64 inject_service_signal;
 759         u64 inject_virtio;
 760 };
 761
 762 struct kvm_arch_memory_slot {
 763 };
 764
 765 struct s390_map_info {
 766         struct list_head list;
 767         __u64 guest_addr;
 768         __u64 addr;
 769         struct page *page;
 770 };
 771
 772 struct s390_io_adapter {
 773         unsigned int id;
 774         int isc;
 775         bool maskable;
 776         bool masked;
 777         bool swap;
 778         bool suppressible;
 779 };
 780
 781 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 782 #define MAX_S390_ADAPTER_MAPS 256
 783
 784 /* maximum size of facilities and facility mask is 2k bytes */
 785 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 786 #define S390_ARCH_FAC_LIST_SIZE_U64 \
 787         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 788 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 789 #define S390_ARCH_FAC_MASK_SIZE_U64 \
 790         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 791
 792 struct kvm_s390_cpu_model {
 793         /* facility mask supported by kvm & hosting machine */
 794         __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
 795         struct kvm_s390_vm_cpu_subfunc subfuncs;
 796         /* facility list requested by guest (in dma page) */
 797         __u64 *fac_list;
 798         u64 cpuid;
 799         unsigned short ibc;
 800 };
 801
 802 struct kvm_s390_module_hook {
 803         int (*hook)(struct kvm_vcpu *vcpu);
 804         struct module *owner;
 805 };
 806
 807 struct kvm_s390_crypto {
 808         struct kvm_s390_crypto_cb *crycb;
 809         struct kvm_s390_module_hook *pqap_hook;
 810         __u32 crycbd;
 811         __u8 aes_kw;
 812         __u8 dea_kw;
 813         __u8 apie;
 814 };
 815
 816 #define APCB0_MASK_SIZE 1
 817 struct kvm_s390_apcb0 {
 818         __u64 apm[APCB0_MASK_SIZE];             /* 0x0000 */
 819         __u64 aqm[APCB0_MASK_SIZE];             /* 0x0008 */
 820         __u64 adm[APCB0_MASK_SIZE];             /* 0x0010 */
 821         __u64 reserved18;                       /* 0x0018 */
 822 };
 823
 824 #define APCB1_MASK_SIZE 4
 825 struct kvm_s390_apcb1 {
 826         __u64 apm[APCB1_MASK_SIZE];             /* 0x0000 */
 827         __u64 aqm[APCB1_MASK_SIZE];             /* 0x0020 */
 828         __u64 adm[APCB1_MASK_SIZE];             /* 0x0040 */
 829         __u64 reserved60[4];                    /* 0x0060 */
 830 };
 831
 832 struct kvm_s390_crypto_cb {
 833         struct kvm_s390_apcb0 apcb0;            /* 0x0000 */
 834         __u8   reserved20[0x0048 - 0x0020];     /* 0x0020 */
 835         __u8   dea_wrapping_key_mask[24];       /* 0x0048 */
 836         __u8   aes_wrapping_key_mask[32];       /* 0x0060 */
 837         struct kvm_s390_apcb1 apcb1;            /* 0x0080 */
 838 };
 839
 840 struct kvm_s390_gisa {
 841         union {
 842                 struct { /* common to all formats */
 843                         u32 next_alert;
 844                         u8  ipm;
 845                         u8  reserved01[2];
 846                         u8  iam;
 847                 };
 848                 struct { /* format 0 */
 849                         u32 next_alert;
 850                         u8  ipm;
 851                         u8  reserved01;
 852                         u8  : 6;
 853                         u8  g : 1;
 854                         u8  c : 1;
 855                         u8  iam;
 856                         u8  reserved02[4];
 857                         u32 airq_count;
 858                 } g0;
 859                 struct { /* format 1 */
 860                         u32 next_alert;
 861                         u8  ipm;
 862                         u8  simm;
 863                         u8  nimm;
 864                         u8  iam;
 865                         u8  aism[8];
 866                         u8  : 6;
 867                         u8  g : 1;
 868                         u8  c : 1;
 869                         u8  reserved03[11];
 870                         u32 airq_count;
 871                 } g1;
 872                 struct {
 873                         u64 word[4];
 874                 } u64;
 875         };
 876 };
 877
 878 struct kvm_s390_gib {
 879         u32 alert_list_origin;
 880         u32 reserved01;
 881         u8:5;
 882         u8  nisc:3;
 883         u8  reserved03[3];
 884         u32 reserved04[5];
 885 };
 886
 887 /*
 888  * sie_page2 has to be allocated as DMA because fac_list, crycb and
 889  * gisa need 31bit addresses in the sie control block.
 890  */
 891 struct sie_page2 {
 892         __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
 893         struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
 894         struct kvm_s390_gisa gisa;                      /* 0x0900 */
 895         struct kvm *kvm;                                /* 0x0920 */
 896         u8 reserved928[0x1000 - 0x928];                 /* 0x0928 */
 897 };
 898
 899 struct kvm_s390_vsie {
 900         struct mutex mutex;
 901         struct radix_tree_root addr_to_page;
 902         int page_count;
 903         int next;
 904         struct page *pages[KVM_MAX_VCPUS];
 905 };
 906
 907 struct kvm_s390_gisa_iam {
 908         u8 mask;
 909         spinlock_t ref_lock;
 910         u32 ref_count[MAX_ISC + 1];
 911 };
 912
 913 struct kvm_s390_gisa_interrupt {
 914         struct kvm_s390_gisa *origin;
 915         struct kvm_s390_gisa_iam alert;
 916         struct hrtimer timer;
 917         u64 expires;
 918         DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
 919 };
 920
 921 struct kvm_s390_pv {
 922         u64 handle;
 923         u64 guest_len;
 924         unsigned long stor_base;
 925         void *stor_var;
 926 };
 927
 928 struct kvm_arch{
 929         void *sca;
 930         int use_esca;
 931         rwlock_t sca_lock;
 932         debug_info_t *dbf;
 933         struct kvm_s390_float_interrupt float_int;
 934         struct kvm_device *flic;
 935         struct gmap *gmap;
 936         unsigned long mem_limit;
 937         int css_support;
 938         int use_irqchip;
 939         int use_cmma;
 940         int use_pfmfi;
 941         int use_skf;
 942         int user_cpu_state_ctrl;
 943         int user_sigp;
 944         int user_stsi;
 945         int user_instr0;
 946         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 947         wait_queue_head_t ipte_wq;
 948         int ipte_lock_count;
 949         struct mutex ipte_mutex;
 950         spinlock_t start_stop_lock;
 951         struct sie_page2 *sie_page2;
 952         struct kvm_s390_cpu_model model;
 953         struct kvm_s390_crypto crypto;
 954         struct kvm_s390_vsie vsie;
 955         u8 epdx;
 956         u64 epoch;
 957         int migration_mode;
 958         atomic64_t cmma_dirty_pages;
 959         /* subset of available cpu features enabled by user space */
 960         DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
 961         /* indexed by vcpu_idx */
 962         DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
 963         struct kvm_s390_gisa_interrupt gisa_int;
 964         struct kvm_s390_pv pv;
 965 };
 966
 967 #define KVM_HVA_ERR_BAD         (-1UL)
 968 #define KVM_HVA_ERR_RO_BAD      (-2UL)
 969
 970 static inline bool kvm_is_error_hva(unsigned long addr)
 971 {
 972         return IS_ERR_VALUE(addr);
 973 }
 974
 975 #define ASYNC_PF_PER_VCPU       64
 976 struct kvm_arch_async_pf {
 977         unsigned long pfault_token;
 978 };
 979
 980 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
 981
 982 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 983                                struct kvm_async_pf *work);
 984
 985 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 986                                      struct kvm_async_pf *work);
 987
 988 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 989                                  struct kvm_async_pf *work);
 990
 991 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
 992
 993 void kvm_arch_crypto_clear_masks(struct kvm *kvm);
 994 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
 995                                unsigned long *aqm, unsigned long *adm);
 996
 997 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 998 extern char sie_exit;
 999
1000 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
1001 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
1002
1003 static inline void kvm_arch_hardware_disable(void) {}
1004 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
1005 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
1006 static inline void kvm_arch_free_memslot(struct kvm *kvm,
1007                                          struct kvm_memory_slot *slot) {}
1008 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
1009 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
1010 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
1011                 struct kvm_memory_slot *slot) {}
1012 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
1013 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
1014
1015 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
1016
1017 #endif