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   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
  53 union bsca_sigp_ctrl {
  54         __u8 value;
  55         struct {
  56                 __u8 c : 1;
  57                 __u8 r : 1;
  58                 __u8 scn : 6;
  59         };
  60 };
  61
  62 union esca_sigp_ctrl {
  63         __u16 value;
  64         struct {
  65                 __u8 c : 1;
  66                 __u8 reserved: 7;
  67                 __u8 scn;
  68         };
  69 };
  70
  71 struct esca_entry {
  72         union esca_sigp_ctrl sigp_ctrl;
  73         __u16   reserved1[3];
  74         __u64   sda;
  75         __u64   reserved2[6];
  76 };
  77
  78 struct 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
  86 union 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
  95 struct 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
 103 struct 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  */
 118 struct mcck_volatile_info {
 119         __u64 mcic;
 120         __u64 failing_storage_address;
 121         __u32 ext_damage_code;
 122         __u32 reserved;
 123 };
 124
 125 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
 126                           CR0_MEASUREMENT_ALERT_SUBMASK)
 127 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
 128                            CR14_EXTERNAL_DAMAGE_SUBMASK)
 129
 130 #define CPUSTAT_STOPPED    0x80000000
 131 #define CPUSTAT_WAIT       0x10000000
 132 #define CPUSTAT_ECALL_PEND 0x08000000
 133 #define CPUSTAT_STOP_INT   0x04000000
 134 #define CPUSTAT_IO_INT     0x02000000
 135 #define CPUSTAT_EXT_INT    0x01000000
 136 #define CPUSTAT_RUNNING    0x00800000
 137 #define CPUSTAT_RETAINED   0x00400000
 138 #define CPUSTAT_TIMING_SUB 0x00020000
 139 #define CPUSTAT_SIE_SUB    0x00010000
 140 #define CPUSTAT_RRF        0x00008000
 141 #define CPUSTAT_SLSV       0x00004000
 142 #define CPUSTAT_SLSR       0x00002000
 143 #define CPUSTAT_ZARCH      0x00000800
 144 #define CPUSTAT_MCDS       0x00000100
 145 #define CPUSTAT_KSS        0x00000200
 146 #define CPUSTAT_SM         0x00000080
 147 #define CPUSTAT_IBS        0x00000040
 148 #define CPUSTAT_GED2       0x00000010
 149 #define CPUSTAT_G          0x00000008
 150 #define CPUSTAT_GED        0x00000004
 151 #define CPUSTAT_J          0x00000002
 152 #define CPUSTAT_P          0x00000001
 153
 154 struct kvm_s390_sie_block {
 155         atomic_t cpuflags;              /* 0x0000 */
 156         __u32 : 1;                      /* 0x0004 */
 157         __u32 prefix : 18;
 158         __u32 : 1;
 159         __u32 ibc : 12;
 160         __u8    reserved08[4];          /* 0x0008 */
 161 #define PROG_IN_SIE (1<<0)
 162         __u32   prog0c;                 /* 0x000c */
 163         __u8    reserved10[16];         /* 0x0010 */
 164 #define PROG_BLOCK_SIE  (1<<0)
 165 #define PROG_REQUEST    (1<<1)
 166         atomic_t prog20;                /* 0x0020 */
 167         __u8    reserved24[4];          /* 0x0024 */
 168         __u64   cputm;                  /* 0x0028 */
 169         __u64   ckc;                    /* 0x0030 */
 170         __u64   epoch;                  /* 0x0038 */
 171         __u32   svcc;                   /* 0x0040 */
 172 #define LCTL_CR0        0x8000
 173 #define LCTL_CR6        0x0200
 174 #define LCTL_CR9        0x0040
 175 #define LCTL_CR10       0x0020
 176 #define LCTL_CR11       0x0010
 177 #define LCTL_CR14       0x0002
 178         __u16   lctl;                   /* 0x0044 */
 179         __s16   icpua;                  /* 0x0046 */
 180 #define ICTL_OPEREXC    0x80000000
 181 #define ICTL_PINT       0x20000000
 182 #define ICTL_LPSW       0x00400000
 183 #define ICTL_STCTL      0x00040000
 184 #define ICTL_ISKE       0x00004000
 185 #define ICTL_SSKE       0x00002000
 186 #define ICTL_RRBE       0x00001000
 187 #define ICTL_TPROT      0x00000200
 188         __u32   ictl;                   /* 0x0048 */
 189 #define ECA_CEI         0x80000000
 190 #define ECA_IB          0x40000000
 191 #define ECA_SIGPI       0x10000000
 192 #define ECA_MVPGI       0x01000000
 193 #define ECA_AIV         0x00200000
 194 #define ECA_VX          0x00020000
 195 #define ECA_PROTEXCI    0x00002000
 196 #define ECA_APIE        0x00000008
 197 #define ECA_SII         0x00000001
 198         __u32   eca;                    /* 0x004c */
 199 #define ICPT_INST       0x04
 200 #define ICPT_PROGI      0x08
 201 #define ICPT_INSTPROGI  0x0C
 202 #define ICPT_EXTREQ     0x10
 203 #define ICPT_EXTINT     0x14
 204 #define ICPT_IOREQ      0x18
 205 #define ICPT_WAIT       0x1c
 206 #define ICPT_VALIDITY   0x20
 207 #define ICPT_STOP       0x28
 208 #define ICPT_OPEREXC    0x2C
 209 #define ICPT_PARTEXEC   0x38
 210 #define ICPT_IOINST     0x40
 211 #define ICPT_KSS        0x5c
 212         __u8    icptcode;               /* 0x0050 */
 213         __u8    icptstatus;             /* 0x0051 */
 214         __u16   ihcpu;                  /* 0x0052 */
 215         __u8    reserved54[2];          /* 0x0054 */
 216         __u16   ipa;                    /* 0x0056 */
 217         __u32   ipb;                    /* 0x0058 */
 218         __u32   scaoh;                  /* 0x005c */
 219 #define FPF_BPBC        0x20
 220         __u8    fpf;                    /* 0x0060 */
 221 #define ECB_GS          0x40
 222 #define ECB_TE          0x10
 223 #define ECB_SRSI        0x04
 224 #define ECB_HOSTPROTINT 0x02
 225         __u8    ecb;                    /* 0x0061 */
 226 #define ECB2_CMMA       0x80
 227 #define ECB2_IEP        0x20
 228 #define ECB2_PFMFI      0x08
 229 #define ECB2_ESCA       0x04
 230         __u8    ecb2;                   /* 0x0062 */
 231 #define ECB3_DEA 0x08
 232 #define ECB3_AES 0x04
 233 #define ECB3_RI  0x01
 234         __u8    ecb3;                   /* 0x0063 */
 235         __u32   scaol;                  /* 0x0064 */
 236         __u8    reserved68;             /* 0x0068 */
 237         __u8    epdx;                   /* 0x0069 */
 238         __u8    reserved6a[2];          /* 0x006a */
 239         __u32   todpr;                  /* 0x006c */
 240 #define GISA_FORMAT1 0x00000001
 241         __u32   gd;                     /* 0x0070 */
 242         __u8    reserved74[12];         /* 0x0074 */
 243         __u64   mso;                    /* 0x0080 */
 244         __u64   msl;                    /* 0x0088 */
 245         psw_t   gpsw;                   /* 0x0090 */
 246         __u64   gg14;                   /* 0x00a0 */
 247         __u64   gg15;                   /* 0x00a8 */
 248         __u8    reservedb0[8];          /* 0x00b0 */
 249 #define HPID_KVM        0x4
 250 #define HPID_VSIE       0x5
 251         __u8    hpid;                   /* 0x00b8 */
 252         __u8    reservedb9[11];         /* 0x00b9 */
 253         __u16   extcpuaddr;             /* 0x00c4 */
 254         __u16   eic;                    /* 0x00c6 */
 255         __u32   reservedc8;             /* 0x00c8 */
 256         __u16   pgmilc;                 /* 0x00cc */
 257         __u16   iprcc;                  /* 0x00ce */
 258         __u32   dxc;                    /* 0x00d0 */
 259         __u16   mcn;                    /* 0x00d4 */
 260         __u8    perc;                   /* 0x00d6 */
 261         __u8    peratmid;               /* 0x00d7 */
 262         __u64   peraddr;                /* 0x00d8 */
 263         __u8    eai;                    /* 0x00e0 */
 264         __u8    peraid;                 /* 0x00e1 */
 265         __u8    oai;                    /* 0x00e2 */
 266         __u8    armid;                  /* 0x00e3 */
 267         __u8    reservede4[4];          /* 0x00e4 */
 268         __u64   tecmc;                  /* 0x00e8 */
 269         __u8    reservedf0[12];         /* 0x00f0 */
 270 #define CRYCB_FORMAT_MASK 0x00000003
 271 #define CRYCB_FORMAT0 0x00000000
 272 #define CRYCB_FORMAT1 0x00000001
 273 #define CRYCB_FORMAT2 0x00000003
 274         __u32   crycbd;                 /* 0x00fc */
 275         __u64   gcr[16];                /* 0x0100 */
 276         __u64   gbea;                   /* 0x0180 */
 277         __u8    reserved188[8];         /* 0x0188 */
 278         __u64   sdnxo;                  /* 0x0190 */
 279         __u8    reserved198[8];         /* 0x0198 */
 280         __u32   fac;                    /* 0x01a0 */
 281         __u8    reserved1a4[20];        /* 0x01a4 */
 282         __u64   cbrlo;                  /* 0x01b8 */
 283         __u8    reserved1c0[8];         /* 0x01c0 */
 284 #define ECD_HOSTREGMGMT 0x20000000
 285 #define ECD_MEF         0x08000000
 286 #define ECD_ETOKENF     0x02000000
 287 #define ECD_ECC         0x00200000
 288         __u32   ecd;                    /* 0x01c8 */
 289         __u8    reserved1cc[18];        /* 0x01cc */
 290         __u64   pp;                     /* 0x01de */
 291         __u8    reserved1e6[2];         /* 0x01e6 */
 292         __u64   itdba;                  /* 0x01e8 */
 293         __u64   riccbd;                 /* 0x01f0 */
 294         __u64   gvrd;                   /* 0x01f8 */
 295 } __attribute__((packed));
 296
 297 struct kvm_s390_itdb {
 298         __u8    data[256];
 299 };
 300
 301 struct sie_page {
 302         struct kvm_s390_sie_block sie_block;
 303         struct mcck_volatile_info mcck_info;    /* 0x0200 */
 304         __u8 reserved218[1000];         /* 0x0218 */
 305         struct kvm_s390_itdb itdb;      /* 0x0600 */
 306         __u8 reserved700[2304];         /* 0x0700 */
 307 };
 308
 309 struct kvm_vcpu_stat {
 310         u64 exit_userspace;
 311         u64 exit_null;
 312         u64 exit_external_request;
 313         u64 exit_io_request;
 314         u64 exit_external_interrupt;
 315         u64 exit_stop_request;
 316         u64 exit_validity;
 317         u64 exit_instruction;
 318         u64 exit_pei;
 319         u64 halt_successful_poll;
 320         u64 halt_attempted_poll;
 321         u64 halt_poll_invalid;
 322         u64 halt_no_poll_steal;
 323         u64 halt_wakeup;
 324         u64 instruction_lctl;
 325         u64 instruction_lctlg;
 326         u64 instruction_stctl;
 327         u64 instruction_stctg;
 328         u64 exit_program_interruption;
 329         u64 exit_instr_and_program;
 330         u64 exit_operation_exception;
 331         u64 deliver_ckc;
 332         u64 deliver_cputm;
 333         u64 deliver_external_call;
 334         u64 deliver_emergency_signal;
 335         u64 deliver_service_signal;
 336         u64 deliver_virtio;
 337         u64 deliver_stop_signal;
 338         u64 deliver_prefix_signal;
 339         u64 deliver_restart_signal;
 340         u64 deliver_program;
 341         u64 deliver_io;
 342         u64 deliver_machine_check;
 343         u64 exit_wait_state;
 344         u64 inject_ckc;
 345         u64 inject_cputm;
 346         u64 inject_external_call;
 347         u64 inject_emergency_signal;
 348         u64 inject_mchk;
 349         u64 inject_pfault_init;
 350         u64 inject_program;
 351         u64 inject_restart;
 352         u64 inject_set_prefix;
 353         u64 inject_stop_signal;
 354         u64 instruction_epsw;
 355         u64 instruction_gs;
 356         u64 instruction_io_other;
 357         u64 instruction_lpsw;
 358         u64 instruction_lpswe;
 359         u64 instruction_pfmf;
 360         u64 instruction_ptff;
 361         u64 instruction_sck;
 362         u64 instruction_sckpf;
 363         u64 instruction_stidp;
 364         u64 instruction_spx;
 365         u64 instruction_stpx;
 366         u64 instruction_stap;
 367         u64 instruction_iske;
 368         u64 instruction_ri;
 369         u64 instruction_rrbe;
 370         u64 instruction_sske;
 371         u64 instruction_ipte_interlock;
 372         u64 instruction_stsi;
 373         u64 instruction_stfl;
 374         u64 instruction_tb;
 375         u64 instruction_tpi;
 376         u64 instruction_tprot;
 377         u64 instruction_tsch;
 378         u64 instruction_sie;
 379         u64 instruction_essa;
 380         u64 instruction_sthyi;
 381         u64 instruction_sigp_sense;
 382         u64 instruction_sigp_sense_running;
 383         u64 instruction_sigp_external_call;
 384         u64 instruction_sigp_emergency;
 385         u64 instruction_sigp_cond_emergency;
 386         u64 instruction_sigp_start;
 387         u64 instruction_sigp_stop;
 388         u64 instruction_sigp_stop_store_status;
 389         u64 instruction_sigp_store_status;
 390         u64 instruction_sigp_store_adtl_status;
 391         u64 instruction_sigp_arch;
 392         u64 instruction_sigp_prefix;
 393         u64 instruction_sigp_restart;
 394         u64 instruction_sigp_init_cpu_reset;
 395         u64 instruction_sigp_cpu_reset;
 396         u64 instruction_sigp_unknown;
 397         u64 diagnose_10;
 398         u64 diagnose_44;
 399         u64 diagnose_9c;
 400         u64 diagnose_9c_ignored;
 401         u64 diagnose_258;
 402         u64 diagnose_308;
 403         u64 diagnose_500;
 404         u64 diagnose_other;
 405 };
 406
 407 #define PGM_OPERATION                   0x01
 408 #define PGM_PRIVILEGED_OP               0x02
 409 #define PGM_EXECUTE                     0x03
 410 #define PGM_PROTECTION                  0x04
 411 #define PGM_ADDRESSING                  0x05
 412 #define PGM_SPECIFICATION               0x06
 413 #define PGM_DATA                        0x07
 414 #define PGM_FIXED_POINT_OVERFLOW        0x08
 415 #define PGM_FIXED_POINT_DIVIDE          0x09
 416 #define PGM_DECIMAL_OVERFLOW            0x0a
 417 #define PGM_DECIMAL_DIVIDE              0x0b
 418 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 419 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 420 #define PGM_HFP_SIGNIFICANCE            0x0e
 421 #define PGM_HFP_DIVIDE                  0x0f
 422 #define PGM_SEGMENT_TRANSLATION         0x10
 423 #define PGM_PAGE_TRANSLATION            0x11
 424 #define PGM_TRANSLATION_SPEC            0x12
 425 #define PGM_SPECIAL_OPERATION           0x13
 426 #define PGM_OPERAND                     0x15
 427 #define PGM_TRACE_TABEL                 0x16
 428 #define PGM_VECTOR_PROCESSING           0x1b
 429 #define PGM_SPACE_SWITCH                0x1c
 430 #define PGM_HFP_SQUARE_ROOT             0x1d
 431 #define PGM_PC_TRANSLATION_SPEC         0x1f
 432 #define PGM_AFX_TRANSLATION             0x20
 433 #define PGM_ASX_TRANSLATION             0x21
 434 #define PGM_LX_TRANSLATION              0x22
 435 #define PGM_EX_TRANSLATION              0x23
 436 #define PGM_PRIMARY_AUTHORITY           0x24
 437 #define PGM_SECONDARY_AUTHORITY         0x25
 438 #define PGM_LFX_TRANSLATION             0x26
 439 #define PGM_LSX_TRANSLATION             0x27
 440 #define PGM_ALET_SPECIFICATION          0x28
 441 #define PGM_ALEN_TRANSLATION            0x29
 442 #define PGM_ALE_SEQUENCE                0x2a
 443 #define PGM_ASTE_VALIDITY               0x2b
 444 #define PGM_ASTE_SEQUENCE               0x2c
 445 #define PGM_EXTENDED_AUTHORITY          0x2d
 446 #define PGM_LSTE_SEQUENCE               0x2e
 447 #define PGM_ASTE_INSTANCE               0x2f
 448 #define PGM_STACK_FULL                  0x30
 449 #define PGM_STACK_EMPTY                 0x31
 450 #define PGM_STACK_SPECIFICATION         0x32
 451 #define PGM_STACK_TYPE                  0x33
 452 #define PGM_STACK_OPERATION             0x34
 453 #define PGM_ASCE_TYPE                   0x38
 454 #define PGM_REGION_FIRST_TRANS          0x39
 455 #define PGM_REGION_SECOND_TRANS         0x3a
 456 #define PGM_REGION_THIRD_TRANS          0x3b
 457 #define PGM_MONITOR                     0x40
 458 #define PGM_PER                         0x80
 459 #define PGM_CRYPTO_OPERATION            0x119
 460
 461 /* irq types in ascend order of priorities */
 462 enum irq_types {
 463         IRQ_PEND_SET_PREFIX = 0,
 464         IRQ_PEND_RESTART,
 465         IRQ_PEND_SIGP_STOP,
 466         IRQ_PEND_IO_ISC_7,
 467         IRQ_PEND_IO_ISC_6,
 468         IRQ_PEND_IO_ISC_5,
 469         IRQ_PEND_IO_ISC_4,
 470         IRQ_PEND_IO_ISC_3,
 471         IRQ_PEND_IO_ISC_2,
 472         IRQ_PEND_IO_ISC_1,
 473         IRQ_PEND_IO_ISC_0,
 474         IRQ_PEND_VIRTIO,
 475         IRQ_PEND_PFAULT_DONE,
 476         IRQ_PEND_PFAULT_INIT,
 477         IRQ_PEND_EXT_HOST,
 478         IRQ_PEND_EXT_SERVICE,
 479         IRQ_PEND_EXT_TIMING,
 480         IRQ_PEND_EXT_CPU_TIMER,
 481         IRQ_PEND_EXT_CLOCK_COMP,
 482         IRQ_PEND_EXT_EXTERNAL,
 483         IRQ_PEND_EXT_EMERGENCY,
 484         IRQ_PEND_EXT_MALFUNC,
 485         IRQ_PEND_EXT_IRQ_KEY,
 486         IRQ_PEND_MCHK_REP,
 487         IRQ_PEND_PROG,
 488         IRQ_PEND_SVC,
 489         IRQ_PEND_MCHK_EX,
 490         IRQ_PEND_COUNT
 491 };
 492
 493 /* We have 2M for virtio device descriptor pages. Smallest amount of
 494  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 495  */
 496 #define KVM_S390_MAX_VIRTIO_IRQS 87381
 497
 498 /*
 499  * Repressible (non-floating) machine check interrupts
 500  * subclass bits in MCIC
 501  */
 502 #define MCHK_EXTD_BIT 58
 503 #define MCHK_DEGR_BIT 56
 504 #define MCHK_WARN_BIT 55
 505 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 506                        (1UL << MCHK_EXTD_BIT) | \
 507                        (1UL << MCHK_WARN_BIT))
 508
 509 /* Exigent machine check interrupts subclass bits in MCIC */
 510 #define MCHK_SD_BIT 63
 511 #define MCHK_PD_BIT 62
 512 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 513
 514 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 515                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 516                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 517                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 518                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 519                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 520                            (1UL << IRQ_PEND_EXT_TIMING)     | \
 521                            (1UL << IRQ_PEND_EXT_HOST)       | \
 522                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
 523                            (1UL << IRQ_PEND_VIRTIO)         | \
 524                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
 525                            (1UL << IRQ_PEND_PFAULT_DONE))
 526
 527 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 528                           (1UL << IRQ_PEND_IO_ISC_1) | \
 529                           (1UL << IRQ_PEND_IO_ISC_2) | \
 530                           (1UL << IRQ_PEND_IO_ISC_3) | \
 531                           (1UL << IRQ_PEND_IO_ISC_4) | \
 532                           (1UL << IRQ_PEND_IO_ISC_5) | \
 533                           (1UL << IRQ_PEND_IO_ISC_6) | \
 534                           (1UL << IRQ_PEND_IO_ISC_7))
 535
 536 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 537                             (1UL << IRQ_PEND_MCHK_EX))
 538
 539 struct kvm_s390_interrupt_info {
 540         struct list_head list;
 541         u64     type;
 542         union {
 543                 struct kvm_s390_io_info io;
 544                 struct kvm_s390_ext_info ext;
 545                 struct kvm_s390_pgm_info pgm;
 546                 struct kvm_s390_emerg_info emerg;
 547                 struct kvm_s390_extcall_info extcall;
 548                 struct kvm_s390_prefix_info prefix;
 549                 struct kvm_s390_stop_info stop;
 550                 struct kvm_s390_mchk_info mchk;
 551         };
 552 };
 553
 554 struct kvm_s390_irq_payload {
 555         struct kvm_s390_io_info io;
 556         struct kvm_s390_ext_info ext;
 557         struct kvm_s390_pgm_info pgm;
 558         struct kvm_s390_emerg_info emerg;
 559         struct kvm_s390_extcall_info extcall;
 560         struct kvm_s390_prefix_info prefix;
 561         struct kvm_s390_stop_info stop;
 562         struct kvm_s390_mchk_info mchk;
 563 };
 564
 565 struct kvm_s390_local_interrupt {
 566         spinlock_t lock;
 567         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 568         struct kvm_s390_irq_payload irq;
 569         unsigned long pending_irqs;
 570 };
 571
 572 #define FIRQ_LIST_IO_ISC_0 0
 573 #define FIRQ_LIST_IO_ISC_1 1
 574 #define FIRQ_LIST_IO_ISC_2 2
 575 #define FIRQ_LIST_IO_ISC_3 3
 576 #define FIRQ_LIST_IO_ISC_4 4
 577 #define FIRQ_LIST_IO_ISC_5 5
 578 #define FIRQ_LIST_IO_ISC_6 6
 579 #define FIRQ_LIST_IO_ISC_7 7
 580 #define FIRQ_LIST_PFAULT   8
 581 #define FIRQ_LIST_VIRTIO   9
 582 #define FIRQ_LIST_COUNT   10
 583 #define FIRQ_CNTR_IO       0
 584 #define FIRQ_CNTR_SERVICE  1
 585 #define FIRQ_CNTR_VIRTIO   2
 586 #define FIRQ_CNTR_PFAULT   3
 587 #define FIRQ_MAX_COUNT     4
 588
 589 /* mask the AIS mode for a given ISC */
 590 #define AIS_MODE_MASK(isc) (0x80 >> isc)
 591
 592 #define KVM_S390_AIS_MODE_ALL    0
 593 #define KVM_S390_AIS_MODE_SINGLE 1
 594
 595 struct kvm_s390_float_interrupt {
 596         unsigned long pending_irqs;
 597         spinlock_t lock;
 598         struct list_head lists[FIRQ_LIST_COUNT];
 599         int counters[FIRQ_MAX_COUNT];
 600         struct kvm_s390_mchk_info mchk;
 601         struct kvm_s390_ext_info srv_signal;
 602         int next_rr_cpu;
 603         struct mutex ais_lock;
 604         u8 simm;
 605         u8 nimm;
 606 };
 607
 608 struct kvm_hw_wp_info_arch {
 609         unsigned long addr;
 610         unsigned long phys_addr;
 611         int len;
 612         char *old_data;
 613 };
 614
 615 struct kvm_hw_bp_info_arch {
 616         unsigned long addr;
 617         int len;
 618 };
 619
 620 /*
 621  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 622  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 623  * arch/s390/include/uapi/asm/kvm.h
 624  */
 625 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 626
 627 #define guestdbg_enabled(vcpu) \
 628                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 629 #define guestdbg_sstep_enabled(vcpu) \
 630                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 631 #define guestdbg_hw_bp_enabled(vcpu) \
 632                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 633 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 634                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 635
 636 struct kvm_guestdbg_info_arch {
 637         unsigned long cr0;
 638         unsigned long cr9;
 639         unsigned long cr10;
 640         unsigned long cr11;
 641         struct kvm_hw_bp_info_arch *hw_bp_info;
 642         struct kvm_hw_wp_info_arch *hw_wp_info;
 643         int nr_hw_bp;
 644         int nr_hw_wp;
 645         unsigned long last_bp;
 646 };
 647
 648 struct kvm_vcpu_arch {
 649         struct kvm_s390_sie_block *sie_block;
 650         /* if vsie is active, currently executed shadow sie control block */
 651         struct kvm_s390_sie_block *vsie_block;
 652         unsigned int      host_acrs[NUM_ACRS];
 653         struct gs_cb      *host_gscb;
 654         struct fpu        host_fpregs;
 655         struct kvm_s390_local_interrupt local_int;
 656         struct hrtimer    ckc_timer;
 657         struct kvm_s390_pgm_info pgm;
 658         struct gmap *gmap;
 659         /* backup location for the currently enabled gmap when scheduled out */
 660         struct gmap *enabled_gmap;
 661         struct kvm_guestdbg_info_arch guestdbg;
 662         unsigned long pfault_token;
 663         unsigned long pfault_select;
 664         unsigned long pfault_compare;
 665         bool cputm_enabled;
 666         /*
 667          * The seqcount protects updates to cputm_start and sie_block.cputm,
 668          * this way we can have non-blocking reads with consistent values.
 669          * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
 670          * values and to start/stop/enable/disable cpu timer accounting.
 671          */
 672         seqcount_t cputm_seqcount;
 673         __u64 cputm_start;
 674         bool gs_enabled;
 675         bool skey_enabled;
 676 };
 677
 678 struct kvm_vm_stat {
 679         u64 inject_io;
 680         u64 inject_float_mchk;
 681         u64 inject_pfault_done;
 682         u64 inject_service_signal;
 683         u64 inject_virtio;
 684         u64 remote_tlb_flush;
 685 };
 686
 687 struct kvm_arch_memory_slot {
 688 };
 689
 690 struct s390_map_info {
 691         struct list_head list;
 692         __u64 guest_addr;
 693         __u64 addr;
 694         struct page *page;
 695 };
 696
 697 struct s390_io_adapter {
 698         unsigned int id;
 699         int isc;
 700         bool maskable;
 701         bool masked;
 702         bool swap;
 703         bool suppressible;
 704         struct rw_semaphore maps_lock;
 705         struct list_head maps;
 706         atomic_t nr_maps;
 707 };
 708
 709 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 710 #define MAX_S390_ADAPTER_MAPS 256
 711
 712 /* maximum size of facilities and facility mask is 2k bytes */
 713 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 714 #define S390_ARCH_FAC_LIST_SIZE_U64 \
 715         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 716 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 717 #define S390_ARCH_FAC_MASK_SIZE_U64 \
 718         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 719
 720 struct kvm_s390_cpu_model {
 721         /* facility mask supported by kvm & hosting machine */
 722         __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
 723         struct kvm_s390_vm_cpu_subfunc subfuncs;
 724         /* facility list requested by guest (in dma page) */
 725         __u64 *fac_list;
 726         u64 cpuid;
 727         unsigned short ibc;
 728 };
 729
 730 struct kvm_s390_module_hook {
 731         int (*hook)(struct kvm_vcpu *vcpu);
 732         struct module *owner;
 733 };
 734
 735 struct kvm_s390_crypto {
 736         struct kvm_s390_crypto_cb *crycb;
 737         struct kvm_s390_module_hook *pqap_hook;
 738         __u32 crycbd;
 739         __u8 aes_kw;
 740         __u8 dea_kw;
 741         __u8 apie;
 742 };
 743
 744 #define APCB0_MASK_SIZE 1
 745 struct kvm_s390_apcb0 {
 746         __u64 apm[APCB0_MASK_SIZE];             /* 0x0000 */
 747         __u64 aqm[APCB0_MASK_SIZE];             /* 0x0008 */
 748         __u64 adm[APCB0_MASK_SIZE];             /* 0x0010 */
 749         __u64 reserved18;                       /* 0x0018 */
 750 };
 751
 752 #define APCB1_MASK_SIZE 4
 753 struct kvm_s390_apcb1 {
 754         __u64 apm[APCB1_MASK_SIZE];             /* 0x0000 */
 755         __u64 aqm[APCB1_MASK_SIZE];             /* 0x0020 */
 756         __u64 adm[APCB1_MASK_SIZE];             /* 0x0040 */
 757         __u64 reserved60[4];                    /* 0x0060 */
 758 };
 759
 760 struct kvm_s390_crypto_cb {
 761         struct kvm_s390_apcb0 apcb0;            /* 0x0000 */
 762         __u8   reserved20[0x0048 - 0x0020];     /* 0x0020 */
 763         __u8   dea_wrapping_key_mask[24];       /* 0x0048 */
 764         __u8   aes_wrapping_key_mask[32];       /* 0x0060 */
 765         struct kvm_s390_apcb1 apcb1;            /* 0x0080 */
 766 };
 767
 768 struct kvm_s390_gisa {
 769         union {
 770                 struct { /* common to all formats */
 771                         u32 next_alert;
 772                         u8  ipm;
 773                         u8  reserved01[2];
 774                         u8  iam;
 775                 };
 776                 struct { /* format 0 */
 777                         u32 next_alert;
 778                         u8  ipm;
 779                         u8  reserved01;
 780                         u8  : 6;
 781                         u8  g : 1;
 782                         u8  c : 1;
 783                         u8  iam;
 784                         u8  reserved02[4];
 785                         u32 airq_count;
 786                 } g0;
 787                 struct { /* format 1 */
 788                         u32 next_alert;
 789                         u8  ipm;
 790                         u8  simm;
 791                         u8  nimm;
 792                         u8  iam;
 793                         u8  aism[8];
 794                         u8  : 6;
 795                         u8  g : 1;
 796                         u8  c : 1;
 797                         u8  reserved03[11];
 798                         u32 airq_count;
 799                 } g1;
 800                 struct {
 801                         u64 word[4];
 802                 } u64;
 803         };
 804 };
 805
 806 struct kvm_s390_gib {
 807         u32 alert_list_origin;
 808         u32 reserved01;
 809         u8:5;
 810         u8  nisc:3;
 811         u8  reserved03[3];
 812         u32 reserved04[5];
 813 };
 814
 815 /*
 816  * sie_page2 has to be allocated as DMA because fac_list, crycb and
 817  * gisa need 31bit addresses in the sie control block.
 818  */
 819 struct sie_page2 {
 820         __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
 821         struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
 822         struct kvm_s390_gisa gisa;                      /* 0x0900 */
 823         struct kvm *kvm;                                /* 0x0920 */
 824         u8 reserved928[0x1000 - 0x928];                 /* 0x0928 */
 825 };
 826
 827 struct kvm_s390_vsie {
 828         struct mutex mutex;
 829         struct radix_tree_root addr_to_page;
 830         int page_count;
 831         int next;
 832         struct page *pages[KVM_MAX_VCPUS];
 833 };
 834
 835 struct kvm_s390_gisa_iam {
 836         u8 mask;
 837         spinlock_t ref_lock;
 838         u32 ref_count[MAX_ISC + 1];
 839 };
 840
 841 struct kvm_s390_gisa_interrupt {
 842         struct kvm_s390_gisa *origin;
 843         struct kvm_s390_gisa_iam alert;
 844         struct hrtimer timer;
 845         u64 expires;
 846         DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
 847 };
 848
 849 struct kvm_arch{
 850         void *sca;
 851         int use_esca;
 852         rwlock_t sca_lock;
 853         debug_info_t *dbf;
 854         struct kvm_s390_float_interrupt float_int;
 855         struct kvm_device *flic;
 856         struct gmap *gmap;
 857         unsigned long mem_limit;
 858         int css_support;
 859         int use_irqchip;
 860         int use_cmma;
 861         int use_pfmfi;
 862         int use_skf;
 863         int user_cpu_state_ctrl;
 864         int user_sigp;
 865         int user_stsi;
 866         int user_instr0;
 867         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 868         wait_queue_head_t ipte_wq;
 869         int ipte_lock_count;
 870         struct mutex ipte_mutex;
 871         spinlock_t start_stop_lock;
 872         struct sie_page2 *sie_page2;
 873         struct kvm_s390_cpu_model model;
 874         struct kvm_s390_crypto crypto;
 875         struct kvm_s390_vsie vsie;
 876         u8 epdx;
 877         u64 epoch;
 878         int migration_mode;
 879         atomic64_t cmma_dirty_pages;
 880         /* subset of available cpu features enabled by user space */
 881         DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
 882         DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
 883         struct kvm_s390_gisa_interrupt gisa_int;
 884 };
 885
 886 #define KVM_HVA_ERR_BAD         (-1UL)
 887 #define KVM_HVA_ERR_RO_BAD      (-2UL)
 888
 889 static inline bool kvm_is_error_hva(unsigned long addr)
 890 {
 891         return IS_ERR_VALUE(addr);
 892 }
 893
 894 #define ASYNC_PF_PER_VCPU       64
 895 struct kvm_arch_async_pf {
 896         unsigned long pfault_token;
 897 };
 898
 899 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 900
 901 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 902                                struct kvm_async_pf *work);
 903
 904 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 905                                      struct kvm_async_pf *work);
 906
 907 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 908                                  struct kvm_async_pf *work);
 909
 910 void kvm_arch_crypto_clear_masks(struct kvm *kvm);
 911 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
 912                                unsigned long *aqm, unsigned long *adm);
 913
 914 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 915 extern char sie_exit;
 916
 917 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
 918 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
 919
 920 static inline void kvm_arch_hardware_disable(void) {}
 921 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 922 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 923 static inline void kvm_arch_free_memslot(struct kvm *kvm,
 924                                          struct kvm_memory_slot *slot) {}
 925 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
 926 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 927 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
 928                 struct kvm_memory_slot *slot) {}
 929 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
 930 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
 931
 932 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
 933
 934 #endif