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 <[email protected]>
   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.h>
  19 #include <linux/seqlock.h>
  20 #include <linux/module.h>
  21 #include <linux/pci.h>
  22 #include <linux/mmu_notifier.h>
  23 #include <asm/debug.h>
  24 #include <asm/cpu.h>
  25 #include <asm/fpu.h>
  26 #include <asm/isc.h>
  27 #include <asm/guarded_storage.h>
  28
  29 #define KVM_S390_BSCA_CPU_SLOTS 64
  30 #define KVM_S390_ESCA_CPU_SLOTS 248
  31 #define KVM_MAX_VCPUS 255
  32
  33 /*
  34  * These seem to be used for allocating ->chip in the routing table, which we
  35  * don't use. 1 is as small as we can get to reduce the needed memory. If we
  36  * need 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 1
  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 #define KVM_REQ_REFRESH_GUEST_PREFIX    \
  50         KVM_ARCH_REQ_FLAGS(6, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
  51
  52 #define SIGP_CTRL_C             0x80
  53 #define SIGP_CTRL_SCN_MASK      0x3f
  54
  55 union bsca_sigp_ctrl {
  56         __u8 value;
  57         struct {
  58                 __u8 c : 1;
  59                 __u8 r : 1;
  60                 __u8 scn : 6;
  61         };
  62 };
  63
  64 union esca_sigp_ctrl {
  65         __u16 value;
  66         struct {
  67                 __u8 c : 1;
  68                 __u8 reserved: 7;
  69                 __u8 scn;
  70         };
  71 };
  72
  73 struct esca_entry {
  74         union esca_sigp_ctrl sigp_ctrl;
  75         __u16   reserved1[3];
  76         __u64   sda;
  77         __u64   reserved2[6];
  78 };
  79
  80 struct bsca_entry {
  81         __u8    reserved0;
  82         union bsca_sigp_ctrl    sigp_ctrl;
  83         __u16   reserved[3];
  84         __u64   sda;
  85         __u64   reserved2[2];
  86 };
  87
  88 union ipte_control {
  89         unsigned long val;
  90         struct {
  91                 unsigned long k  : 1;
  92                 unsigned long kh : 31;
  93                 unsigned long kg : 32;
  94         };
  95 };
  96
  97 /*
  98  * Utility is defined as two bytes but having it four bytes wide
  99  * generates more efficient code. Since the following bytes are
 100  * reserved this makes no functional difference.
 101  */
 102 union sca_utility {
 103         __u32 val;
 104         struct {
 105                 __u32 mtcr : 1;
 106                 __u32      : 31;
 107         };
 108 };
 109
 110 struct bsca_block {
 111         union ipte_control ipte_control;
 112         __u64   reserved[5];
 113         __u64   mcn;
 114         union sca_utility utility;
 115         __u8    reserved2[4];
 116         struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
 117 };
 118
 119 struct esca_block {
 120         union ipte_control ipte_control;
 121         __u64   reserved1[6];
 122         union sca_utility utility;
 123         __u8    reserved2[4];
 124         __u64   mcn[4];
 125         __u64   reserved3[20];
 126         struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
 127 };
 128
 129 /*
 130  * This struct is used to store some machine check info from lowcore
 131  * for machine checks that happen while the guest is running.
 132  * This info in host's lowcore might be overwritten by a second machine
 133  * check from host when host is in the machine check's high-level handling.
 134  * The size is 24 bytes.
 135  */
 136 struct mcck_volatile_info {
 137         __u64 mcic;
 138         __u64 failing_storage_address;
 139         __u32 ext_damage_code;
 140         __u32 reserved;
 141 };
 142
 143 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
 144                           CR0_MEASUREMENT_ALERT_SUBMASK)
 145 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
 146                            CR14_EXTERNAL_DAMAGE_SUBMASK)
 147
 148 #define SIDAD_SIZE_MASK         0xff
 149 #define sida_addr(sie_block) phys_to_virt((sie_block)->sidad & PAGE_MASK)
 150 #define sida_size(sie_block) \
 151         ((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE)
 152
 153 #define CPUSTAT_STOPPED    0x80000000
 154 #define CPUSTAT_WAIT       0x10000000
 155 #define CPUSTAT_ECALL_PEND 0x08000000
 156 #define CPUSTAT_STOP_INT   0x04000000
 157 #define CPUSTAT_IO_INT     0x02000000
 158 #define CPUSTAT_EXT_INT    0x01000000
 159 #define CPUSTAT_RUNNING    0x00800000
 160 #define CPUSTAT_RETAINED   0x00400000
 161 #define CPUSTAT_TIMING_SUB 0x00020000
 162 #define CPUSTAT_SIE_SUB    0x00010000
 163 #define CPUSTAT_RRF        0x00008000
 164 #define CPUSTAT_SLSV       0x00004000
 165 #define CPUSTAT_SLSR       0x00002000
 166 #define CPUSTAT_ZARCH      0x00000800
 167 #define CPUSTAT_MCDS       0x00000100
 168 #define CPUSTAT_KSS        0x00000200
 169 #define CPUSTAT_SM         0x00000080
 170 #define CPUSTAT_IBS        0x00000040
 171 #define CPUSTAT_GED2       0x00000010
 172 #define CPUSTAT_G          0x00000008
 173 #define CPUSTAT_GED        0x00000004
 174 #define CPUSTAT_J          0x00000002
 175 #define CPUSTAT_P          0x00000001
 176
 177 struct kvm_s390_sie_block {
 178         atomic_t cpuflags;              /* 0x0000 */
 179         __u32 : 1;                      /* 0x0004 */
 180         __u32 prefix : 18;
 181         __u32 : 1;
 182         __u32 ibc : 12;
 183         __u8    reserved08[4];          /* 0x0008 */
 184 #define PROG_IN_SIE (1<<0)
 185         __u32   prog0c;                 /* 0x000c */
 186         union {
 187                 __u8    reserved10[16];         /* 0x0010 */
 188                 struct {
 189                         __u64   pv_handle_cpu;
 190                         __u64   pv_handle_config;
 191                 };
 192         };
 193 #define PROG_BLOCK_SIE  (1<<0)
 194 #define PROG_REQUEST    (1<<1)
 195         atomic_t prog20;                /* 0x0020 */
 196         __u8    reserved24[4];          /* 0x0024 */
 197         __u64   cputm;                  /* 0x0028 */
 198         __u64   ckc;                    /* 0x0030 */
 199         __u64   epoch;                  /* 0x0038 */
 200         __u32   svcc;                   /* 0x0040 */
 201 #define LCTL_CR0        0x8000
 202 #define LCTL_CR6        0x0200
 203 #define LCTL_CR9        0x0040
 204 #define LCTL_CR10       0x0020
 205 #define LCTL_CR11       0x0010
 206 #define LCTL_CR14       0x0002
 207         __u16   lctl;                   /* 0x0044 */
 208         __s16   icpua;                  /* 0x0046 */
 209 #define ICTL_OPEREXC    0x80000000
 210 #define ICTL_PINT       0x20000000
 211 #define ICTL_LPSW       0x00400000
 212 #define ICTL_STCTL      0x00040000
 213 #define ICTL_ISKE       0x00004000
 214 #define ICTL_SSKE       0x00002000
 215 #define ICTL_RRBE       0x00001000
 216 #define ICTL_TPROT      0x00000200
 217         __u32   ictl;                   /* 0x0048 */
 218 #define ECA_CEI         0x80000000
 219 #define ECA_IB          0x40000000
 220 #define ECA_SIGPI       0x10000000
 221 #define ECA_MVPGI       0x01000000
 222 #define ECA_AIV         0x00200000
 223 #define ECA_VX          0x00020000
 224 #define ECA_PROTEXCI    0x00002000
 225 #define ECA_APIE        0x00000008
 226 #define ECA_SII         0x00000001
 227         __u32   eca;                    /* 0x004c */
 228 #define ICPT_INST       0x04
 229 #define ICPT_PROGI      0x08
 230 #define ICPT_INSTPROGI  0x0C
 231 #define ICPT_EXTREQ     0x10
 232 #define ICPT_EXTINT     0x14
 233 #define ICPT_IOREQ      0x18
 234 #define ICPT_WAIT       0x1c
 235 #define ICPT_VALIDITY   0x20
 236 #define ICPT_STOP       0x28
 237 #define ICPT_OPEREXC    0x2C
 238 #define ICPT_PARTEXEC   0x38
 239 #define ICPT_IOINST     0x40
 240 #define ICPT_KSS        0x5c
 241 #define ICPT_MCHKREQ    0x60
 242 #define ICPT_INT_ENABLE 0x64
 243 #define ICPT_PV_INSTR   0x68
 244 #define ICPT_PV_NOTIFY  0x6c
 245 #define ICPT_PV_PREF    0x70
 246         __u8    icptcode;               /* 0x0050 */
 247         __u8    icptstatus;             /* 0x0051 */
 248         __u16   ihcpu;                  /* 0x0052 */
 249         __u8    reserved54;             /* 0x0054 */
 250 #define IICTL_CODE_NONE          0x00
 251 #define IICTL_CODE_MCHK          0x01
 252 #define IICTL_CODE_EXT           0x02
 253 #define IICTL_CODE_IO            0x03
 254 #define IICTL_CODE_RESTART       0x04
 255 #define IICTL_CODE_SPECIFICATION 0x10
 256 #define IICTL_CODE_OPERAND       0x11
 257         __u8    iictl;                  /* 0x0055 */
 258         __u16   ipa;                    /* 0x0056 */
 259         __u32   ipb;                    /* 0x0058 */
 260         __u32   scaoh;                  /* 0x005c */
 261 #define FPF_BPBC        0x20
 262         __u8    fpf;                    /* 0x0060 */
 263 #define ECB_GS          0x40
 264 #define ECB_TE          0x10
 265 #define ECB_SPECI       0x08
 266 #define ECB_SRSI        0x04
 267 #define ECB_HOSTPROTINT 0x02
 268 #define ECB_PTF         0x01
 269         __u8    ecb;                    /* 0x0061 */
 270 #define ECB2_CMMA       0x80
 271 #define ECB2_IEP        0x20
 272 #define ECB2_PFMFI      0x08
 273 #define ECB2_ESCA       0x04
 274 #define ECB2_ZPCI_LSI   0x02
 275         __u8    ecb2;                   /* 0x0062 */
 276 #define ECB3_AISI       0x20
 277 #define ECB3_AISII      0x10
 278 #define ECB3_DEA 0x08
 279 #define ECB3_AES 0x04
 280 #define ECB3_RI  0x01
 281         __u8    ecb3;                   /* 0x0063 */
 282 #define ESCA_SCAOL_MASK ~0x3fU
 283         __u32   scaol;                  /* 0x0064 */
 284         __u8    sdf;                    /* 0x0068 */
 285         __u8    epdx;                   /* 0x0069 */
 286         __u8    cpnc;                   /* 0x006a */
 287         __u8    reserved6b;             /* 0x006b */
 288         __u32   todpr;                  /* 0x006c */
 289 #define GISA_FORMAT1 0x00000001
 290         __u32   gd;                     /* 0x0070 */
 291         __u8    reserved74[12];         /* 0x0074 */
 292         __u64   mso;                    /* 0x0080 */
 293         __u64   msl;                    /* 0x0088 */
 294         psw_t   gpsw;                   /* 0x0090 */
 295         __u64   gg14;                   /* 0x00a0 */
 296         __u64   gg15;                   /* 0x00a8 */
 297         __u8    reservedb0[8];          /* 0x00b0 */
 298 #define HPID_KVM        0x4
 299 #define HPID_VSIE       0x5
 300         __u8    hpid;                   /* 0x00b8 */
 301         __u8    reservedb9[7];          /* 0x00b9 */
 302         union {
 303                 struct {
 304                         __u32   eiparams;       /* 0x00c0 */
 305                         __u16   extcpuaddr;     /* 0x00c4 */
 306                         __u16   eic;            /* 0x00c6 */
 307                 };
 308                 __u64   mcic;                   /* 0x00c0 */
 309         } __packed;
 310         __u32   reservedc8;             /* 0x00c8 */
 311         union {
 312                 struct {
 313                         __u16   pgmilc;         /* 0x00cc */
 314                         __u16   iprcc;          /* 0x00ce */
 315                 };
 316                 __u32   edc;                    /* 0x00cc */
 317         } __packed;
 318         union {
 319                 struct {
 320                         __u32   dxc;            /* 0x00d0 */
 321                         __u16   mcn;            /* 0x00d4 */
 322                         __u8    perc;           /* 0x00d6 */
 323                         __u8    peratmid;       /* 0x00d7 */
 324                 };
 325                 __u64   faddr;                  /* 0x00d0 */
 326         } __packed;
 327         __u64   peraddr;                /* 0x00d8 */
 328         __u8    eai;                    /* 0x00e0 */
 329         __u8    peraid;                 /* 0x00e1 */
 330         __u8    oai;                    /* 0x00e2 */
 331         __u8    armid;                  /* 0x00e3 */
 332         __u8    reservede4[4];          /* 0x00e4 */
 333         union {
 334                 __u64   tecmc;          /* 0x00e8 */
 335                 struct {
 336                         __u16   subchannel_id;  /* 0x00e8 */
 337                         __u16   subchannel_nr;  /* 0x00ea */
 338                         __u32   io_int_parm;    /* 0x00ec */
 339                         __u32   io_int_word;    /* 0x00f0 */
 340                 };
 341         } __packed;
 342         __u8    reservedf4[8];          /* 0x00f4 */
 343 #define CRYCB_FORMAT_MASK 0x00000003
 344 #define CRYCB_FORMAT0 0x00000000
 345 #define CRYCB_FORMAT1 0x00000001
 346 #define CRYCB_FORMAT2 0x00000003
 347         __u32   crycbd;                 /* 0x00fc */
 348         __u64   gcr[16];                /* 0x0100 */
 349         union {
 350                 __u64   gbea;           /* 0x0180 */
 351                 __u64   sidad;
 352         };
 353         __u8    reserved188[8];         /* 0x0188 */
 354         __u64   sdnxo;                  /* 0x0190 */
 355         __u8    reserved198[8];         /* 0x0198 */
 356         __u32   fac;                    /* 0x01a0 */
 357         __u8    reserved1a4[20];        /* 0x01a4 */
 358         __u64   cbrlo;                  /* 0x01b8 */
 359         __u8    reserved1c0[8];         /* 0x01c0 */
 360 #define ECD_HOSTREGMGMT 0x20000000
 361 #define ECD_MEF         0x08000000
 362 #define ECD_ETOKENF     0x02000000
 363 #define ECD_ECC         0x00200000
 364 #define ECD_HMAC        0x00004000
 365         __u32   ecd;                    /* 0x01c8 */
 366         __u8    reserved1cc[18];        /* 0x01cc */
 367         __u64   pp;                     /* 0x01de */
 368         __u8    reserved1e6[2];         /* 0x01e6 */
 369         __u64   itdba;                  /* 0x01e8 */
 370         __u64   riccbd;                 /* 0x01f0 */
 371         __u64   gvrd;                   /* 0x01f8 */
 372 } __packed __aligned(512);
 373
 374 struct kvm_s390_itdb {
 375         __u8    data[256];
 376 };
 377
 378 struct sie_page {
 379         struct kvm_s390_sie_block sie_block;
 380         struct mcck_volatile_info mcck_info;    /* 0x0200 */
 381         __u8 reserved218[360];          /* 0x0218 */
 382         __u64 pv_grregs[16];            /* 0x0380 */
 383         __u8 reserved400[512];          /* 0x0400 */
 384         struct kvm_s390_itdb itdb;      /* 0x0600 */
 385         __u8 reserved700[2304];         /* 0x0700 */
 386 };
 387
 388 struct kvm_vcpu_stat {
 389         struct kvm_vcpu_stat_generic generic;
 390         u64 exit_userspace;
 391         u64 exit_null;
 392         u64 exit_external_request;
 393         u64 exit_io_request;
 394         u64 exit_external_interrupt;
 395         u64 exit_stop_request;
 396         u64 exit_validity;
 397         u64 exit_instruction;
 398         u64 exit_pei;
 399         u64 halt_no_poll_steal;
 400         u64 instruction_lctl;
 401         u64 instruction_lctlg;
 402         u64 instruction_stctl;
 403         u64 instruction_stctg;
 404         u64 exit_program_interruption;
 405         u64 exit_instr_and_program;
 406         u64 exit_operation_exception;
 407         u64 deliver_ckc;
 408         u64 deliver_cputm;
 409         u64 deliver_external_call;
 410         u64 deliver_emergency_signal;
 411         u64 deliver_service_signal;
 412         u64 deliver_virtio;
 413         u64 deliver_stop_signal;
 414         u64 deliver_prefix_signal;
 415         u64 deliver_restart_signal;
 416         u64 deliver_program;
 417         u64 deliver_io;
 418         u64 deliver_machine_check;
 419         u64 exit_wait_state;
 420         u64 inject_ckc;
 421         u64 inject_cputm;
 422         u64 inject_external_call;
 423         u64 inject_emergency_signal;
 424         u64 inject_mchk;
 425         u64 inject_pfault_init;
 426         u64 inject_program;
 427         u64 inject_restart;
 428         u64 inject_set_prefix;
 429         u64 inject_stop_signal;
 430         u64 instruction_epsw;
 431         u64 instruction_gs;
 432         u64 instruction_io_other;
 433         u64 instruction_lpsw;
 434         u64 instruction_lpswe;
 435         u64 instruction_lpswey;
 436         u64 instruction_pfmf;
 437         u64 instruction_ptff;
 438         u64 instruction_sck;
 439         u64 instruction_sckpf;
 440         u64 instruction_stidp;
 441         u64 instruction_spx;
 442         u64 instruction_stpx;
 443         u64 instruction_stap;
 444         u64 instruction_iske;
 445         u64 instruction_ri;
 446         u64 instruction_rrbe;
 447         u64 instruction_sske;
 448         u64 instruction_ipte_interlock;
 449         u64 instruction_stsi;
 450         u64 instruction_stfl;
 451         u64 instruction_tb;
 452         u64 instruction_tpi;
 453         u64 instruction_tprot;
 454         u64 instruction_tsch;
 455         u64 instruction_sie;
 456         u64 instruction_essa;
 457         u64 instruction_sthyi;
 458         u64 instruction_sigp_sense;
 459         u64 instruction_sigp_sense_running;
 460         u64 instruction_sigp_external_call;
 461         u64 instruction_sigp_emergency;
 462         u64 instruction_sigp_cond_emergency;
 463         u64 instruction_sigp_start;
 464         u64 instruction_sigp_stop;
 465         u64 instruction_sigp_stop_store_status;
 466         u64 instruction_sigp_store_status;
 467         u64 instruction_sigp_store_adtl_status;
 468         u64 instruction_sigp_arch;
 469         u64 instruction_sigp_prefix;
 470         u64 instruction_sigp_restart;
 471         u64 instruction_sigp_init_cpu_reset;
 472         u64 instruction_sigp_cpu_reset;
 473         u64 instruction_sigp_unknown;
 474         u64 instruction_diagnose_10;
 475         u64 instruction_diagnose_44;
 476         u64 instruction_diagnose_9c;
 477         u64 diag_9c_ignored;
 478         u64 diag_9c_forward;
 479         u64 instruction_diagnose_258;
 480         u64 instruction_diagnose_308;
 481         u64 instruction_diagnose_500;
 482         u64 instruction_diagnose_other;
 483         u64 pfault_sync;
 484 };
 485
 486 #define PGM_OPERATION                   0x01
 487 #define PGM_PRIVILEGED_OP               0x02
 488 #define PGM_EXECUTE                     0x03
 489 #define PGM_PROTECTION                  0x04
 490 #define PGM_ADDRESSING                  0x05
 491 #define PGM_SPECIFICATION               0x06
 492 #define PGM_DATA                        0x07
 493 #define PGM_FIXED_POINT_OVERFLOW        0x08
 494 #define PGM_FIXED_POINT_DIVIDE          0x09
 495 #define PGM_DECIMAL_OVERFLOW            0x0a
 496 #define PGM_DECIMAL_DIVIDE              0x0b
 497 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 498 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 499 #define PGM_HFP_SIGNIFICANCE            0x0e
 500 #define PGM_HFP_DIVIDE                  0x0f
 501 #define PGM_SEGMENT_TRANSLATION         0x10
 502 #define PGM_PAGE_TRANSLATION            0x11
 503 #define PGM_TRANSLATION_SPEC            0x12
 504 #define PGM_SPECIAL_OPERATION           0x13
 505 #define PGM_OPERAND                     0x15
 506 #define PGM_TRACE_TABEL                 0x16
 507 #define PGM_VECTOR_PROCESSING           0x1b
 508 #define PGM_SPACE_SWITCH                0x1c
 509 #define PGM_HFP_SQUARE_ROOT             0x1d
 510 #define PGM_PC_TRANSLATION_SPEC         0x1f
 511 #define PGM_AFX_TRANSLATION             0x20
 512 #define PGM_ASX_TRANSLATION             0x21
 513 #define PGM_LX_TRANSLATION              0x22
 514 #define PGM_EX_TRANSLATION              0x23
 515 #define PGM_PRIMARY_AUTHORITY           0x24
 516 #define PGM_SECONDARY_AUTHORITY         0x25
 517 #define PGM_LFX_TRANSLATION             0x26
 518 #define PGM_LSX_TRANSLATION             0x27
 519 #define PGM_ALET_SPECIFICATION          0x28
 520 #define PGM_ALEN_TRANSLATION            0x29
 521 #define PGM_ALE_SEQUENCE                0x2a
 522 #define PGM_ASTE_VALIDITY               0x2b
 523 #define PGM_ASTE_SEQUENCE               0x2c
 524 #define PGM_EXTENDED_AUTHORITY          0x2d
 525 #define PGM_LSTE_SEQUENCE               0x2e
 526 #define PGM_ASTE_INSTANCE               0x2f
 527 #define PGM_STACK_FULL                  0x30
 528 #define PGM_STACK_EMPTY                 0x31
 529 #define PGM_STACK_SPECIFICATION         0x32
 530 #define PGM_STACK_TYPE                  0x33
 531 #define PGM_STACK_OPERATION             0x34
 532 #define PGM_ASCE_TYPE                   0x38
 533 #define PGM_REGION_FIRST_TRANS          0x39
 534 #define PGM_REGION_SECOND_TRANS         0x3a
 535 #define PGM_REGION_THIRD_TRANS          0x3b
 536 #define PGM_SECURE_STORAGE_ACCESS       0x3d
 537 #define PGM_NON_SECURE_STORAGE_ACCESS   0x3e
 538 #define PGM_SECURE_STORAGE_VIOLATION    0x3f
 539 #define PGM_MONITOR                     0x40
 540 #define PGM_PER                         0x80
 541 #define PGM_CRYPTO_OPERATION            0x119
 542
 543 /* irq types in ascend order of priorities */
 544 enum irq_types {
 545         IRQ_PEND_SET_PREFIX = 0,
 546         IRQ_PEND_RESTART,
 547         IRQ_PEND_SIGP_STOP,
 548         IRQ_PEND_IO_ISC_7,
 549         IRQ_PEND_IO_ISC_6,
 550         IRQ_PEND_IO_ISC_5,
 551         IRQ_PEND_IO_ISC_4,
 552         IRQ_PEND_IO_ISC_3,
 553         IRQ_PEND_IO_ISC_2,
 554         IRQ_PEND_IO_ISC_1,
 555         IRQ_PEND_IO_ISC_0,
 556         IRQ_PEND_VIRTIO,
 557         IRQ_PEND_PFAULT_DONE,
 558         IRQ_PEND_PFAULT_INIT,
 559         IRQ_PEND_EXT_HOST,
 560         IRQ_PEND_EXT_SERVICE,
 561         IRQ_PEND_EXT_SERVICE_EV,
 562         IRQ_PEND_EXT_TIMING,
 563         IRQ_PEND_EXT_CPU_TIMER,
 564         IRQ_PEND_EXT_CLOCK_COMP,
 565         IRQ_PEND_EXT_EXTERNAL,
 566         IRQ_PEND_EXT_EMERGENCY,
 567         IRQ_PEND_EXT_MALFUNC,
 568         IRQ_PEND_EXT_IRQ_KEY,
 569         IRQ_PEND_MCHK_REP,
 570         IRQ_PEND_PROG,
 571         IRQ_PEND_SVC,
 572         IRQ_PEND_MCHK_EX,
 573         IRQ_PEND_COUNT
 574 };
 575
 576 /* We have 2M for virtio device descriptor pages. Smallest amount of
 577  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 578  */
 579 #define KVM_S390_MAX_VIRTIO_IRQS 87381
 580
 581 /*
 582  * Repressible (non-floating) machine check interrupts
 583  * subclass bits in MCIC
 584  */
 585 #define MCHK_EXTD_BIT 58
 586 #define MCHK_DEGR_BIT 56
 587 #define MCHK_WARN_BIT 55
 588 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 589                        (1UL << MCHK_EXTD_BIT) | \
 590                        (1UL << MCHK_WARN_BIT))
 591
 592 /* Exigent machine check interrupts subclass bits in MCIC */
 593 #define MCHK_SD_BIT 63
 594 #define MCHK_PD_BIT 62
 595 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 596
 597 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 598                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 599                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 600                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 601                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 602                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 603                            (1UL << IRQ_PEND_EXT_TIMING)     | \
 604                            (1UL << IRQ_PEND_EXT_HOST)       | \
 605                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
 606                            (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
 607                            (1UL << IRQ_PEND_VIRTIO)         | \
 608                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
 609                            (1UL << IRQ_PEND_PFAULT_DONE))
 610
 611 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 612                           (1UL << IRQ_PEND_IO_ISC_1) | \
 613                           (1UL << IRQ_PEND_IO_ISC_2) | \
 614                           (1UL << IRQ_PEND_IO_ISC_3) | \
 615                           (1UL << IRQ_PEND_IO_ISC_4) | \
 616                           (1UL << IRQ_PEND_IO_ISC_5) | \
 617                           (1UL << IRQ_PEND_IO_ISC_6) | \
 618                           (1UL << IRQ_PEND_IO_ISC_7))
 619
 620 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 621                             (1UL << IRQ_PEND_MCHK_EX))
 622
 623 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 624                               (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 625                               (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 626                               (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 627                               (1UL << IRQ_PEND_EXT_SERVICE)    | \
 628                               (1UL << IRQ_PEND_EXT_SERVICE_EV))
 629
 630 struct kvm_s390_interrupt_info {
 631         struct list_head list;
 632         u64     type;
 633         union {
 634                 struct kvm_s390_io_info io;
 635                 struct kvm_s390_ext_info ext;
 636                 struct kvm_s390_pgm_info pgm;
 637                 struct kvm_s390_emerg_info emerg;
 638                 struct kvm_s390_extcall_info extcall;
 639                 struct kvm_s390_prefix_info prefix;
 640                 struct kvm_s390_stop_info stop;
 641                 struct kvm_s390_mchk_info mchk;
 642         };
 643 };
 644
 645 struct kvm_s390_irq_payload {
 646         struct kvm_s390_io_info io;
 647         struct kvm_s390_ext_info ext;
 648         struct kvm_s390_pgm_info pgm;
 649         struct kvm_s390_emerg_info emerg;
 650         struct kvm_s390_extcall_info extcall;
 651         struct kvm_s390_prefix_info prefix;
 652         struct kvm_s390_stop_info stop;
 653         struct kvm_s390_mchk_info mchk;
 654 };
 655
 656 struct kvm_s390_local_interrupt {
 657         spinlock_t lock;
 658         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 659         struct kvm_s390_irq_payload irq;
 660         unsigned long pending_irqs;
 661 };
 662
 663 #define FIRQ_LIST_IO_ISC_0 0
 664 #define FIRQ_LIST_IO_ISC_1 1
 665 #define FIRQ_LIST_IO_ISC_2 2
 666 #define FIRQ_LIST_IO_ISC_3 3
 667 #define FIRQ_LIST_IO_ISC_4 4
 668 #define FIRQ_LIST_IO_ISC_5 5
 669 #define FIRQ_LIST_IO_ISC_6 6
 670 #define FIRQ_LIST_IO_ISC_7 7
 671 #define FIRQ_LIST_PFAULT   8
 672 #define FIRQ_LIST_VIRTIO   9
 673 #define FIRQ_LIST_COUNT   10
 674 #define FIRQ_CNTR_IO       0
 675 #define FIRQ_CNTR_SERVICE  1
 676 #define FIRQ_CNTR_VIRTIO   2
 677 #define FIRQ_CNTR_PFAULT   3
 678 #define FIRQ_MAX_COUNT     4
 679
 680 /* mask the AIS mode for a given ISC */
 681 #define AIS_MODE_MASK(isc) (0x80 >> isc)
 682
 683 #define KVM_S390_AIS_MODE_ALL    0
 684 #define KVM_S390_AIS_MODE_SINGLE 1
 685
 686 struct kvm_s390_float_interrupt {
 687         unsigned long pending_irqs;
 688         unsigned long masked_irqs;
 689         spinlock_t lock;
 690         struct list_head lists[FIRQ_LIST_COUNT];
 691         int counters[FIRQ_MAX_COUNT];
 692         struct kvm_s390_mchk_info mchk;
 693         struct kvm_s390_ext_info srv_signal;
 694         int next_rr_cpu;
 695         struct mutex ais_lock;
 696         u8 simm;
 697         u8 nimm;
 698 };
 699
 700 struct kvm_hw_wp_info_arch {
 701         unsigned long addr;
 702         unsigned long phys_addr;
 703         int len;
 704         char *old_data;
 705 };
 706
 707 struct kvm_hw_bp_info_arch {
 708         unsigned long addr;
 709         int len;
 710 };
 711
 712 /*
 713  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 714  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 715  * arch/s390/include/uapi/asm/kvm.h
 716  */
 717 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 718
 719 #define guestdbg_enabled(vcpu) \
 720                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 721 #define guestdbg_sstep_enabled(vcpu) \
 722                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 723 #define guestdbg_hw_bp_enabled(vcpu) \
 724                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 725 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 726                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 727
 728 #define KVM_GUESTDBG_VALID_MASK \
 729                 (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\
 730                 KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING)
 731
 732 struct kvm_guestdbg_info_arch {
 733         unsigned long cr0;
 734         unsigned long cr9;
 735         unsigned long cr10;
 736         unsigned long cr11;
 737         struct kvm_hw_bp_info_arch *hw_bp_info;
 738         struct kvm_hw_wp_info_arch *hw_wp_info;
 739         int nr_hw_bp;
 740         int nr_hw_wp;
 741         unsigned long last_bp;
 742 };
 743
 744 struct kvm_s390_pv_vcpu {
 745         u64 handle;
 746         unsigned long stor_base;
 747 };
 748
 749 struct kvm_vcpu_arch {
 750         struct kvm_s390_sie_block *sie_block;
 751         /* if vsie is active, currently executed shadow sie control block */
 752         struct kvm_s390_sie_block *vsie_block;
 753         unsigned int      host_acrs[NUM_ACRS];
 754         struct gs_cb      *host_gscb;
 755         struct kvm_s390_local_interrupt local_int;
 756         struct hrtimer    ckc_timer;
 757         struct kvm_s390_pgm_info pgm;
 758         struct gmap *gmap;
 759         struct kvm_guestdbg_info_arch guestdbg;
 760         unsigned long pfault_token;
 761         unsigned long pfault_select;
 762         unsigned long pfault_compare;
 763         bool cputm_enabled;
 764         /*
 765          * The seqcount protects updates to cputm_start and sie_block.cputm,
 766          * this way we can have non-blocking reads with consistent values.
 767          * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
 768          * values and to start/stop/enable/disable cpu timer accounting.
 769          */
 770         seqcount_t cputm_seqcount;
 771         __u64 cputm_start;
 772         bool gs_enabled;
 773         bool skey_enabled;
 774         /* Indicator if the access registers have been loaded from guest */
 775         bool acrs_loaded;
 776         struct kvm_s390_pv_vcpu pv;
 777         union diag318_info diag318_info;
 778 };
 779
 780 struct kvm_vm_stat {
 781         struct kvm_vm_stat_generic generic;
 782         u64 inject_io;
 783         u64 inject_float_mchk;
 784         u64 inject_pfault_done;
 785         u64 inject_service_signal;
 786         u64 inject_virtio;
 787         u64 aen_forward;
 788         u64 gmap_shadow_create;
 789         u64 gmap_shadow_reuse;
 790         u64 gmap_shadow_r1_entry;
 791         u64 gmap_shadow_r2_entry;
 792         u64 gmap_shadow_r3_entry;
 793         u64 gmap_shadow_sg_entry;
 794         u64 gmap_shadow_pg_entry;
 795 };
 796
 797 struct kvm_arch_memory_slot {
 798 };
 799
 800 struct s390_map_info {
 801         struct list_head list;
 802         __u64 guest_addr;
 803         __u64 addr;
 804         struct page *page;
 805 };
 806
 807 struct s390_io_adapter {
 808         unsigned int id;
 809         int isc;
 810         bool maskable;
 811         bool masked;
 812         bool swap;
 813         bool suppressible;
 814 };
 815
 816 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 817 #define MAX_S390_ADAPTER_MAPS 256
 818
 819 /* maximum size of facilities and facility mask is 2k bytes */
 820 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 821 #define S390_ARCH_FAC_LIST_SIZE_U64 \
 822         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 823 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 824 #define S390_ARCH_FAC_MASK_SIZE_U64 \
 825         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 826
 827 struct kvm_s390_cpu_model {
 828         /* facility mask supported by kvm & hosting machine */
 829         __u64 fac_mask[S390_ARCH_FAC_MASK_SIZE_U64];
 830         struct kvm_s390_vm_cpu_subfunc subfuncs;
 831         /* facility list requested by guest (in dma page) */
 832         __u64 *fac_list;
 833         u64 cpuid;
 834         unsigned short ibc;
 835         /* subset of available UV-features for pv-guests enabled by user space */
 836         struct kvm_s390_vm_cpu_uv_feat uv_feat_guest;
 837 };
 838
 839 typedef int (*crypto_hook)(struct kvm_vcpu *vcpu);
 840
 841 struct kvm_s390_crypto {
 842         struct kvm_s390_crypto_cb *crycb;
 843         struct rw_semaphore pqap_hook_rwsem;
 844         crypto_hook *pqap_hook;
 845         __u32 crycbd;
 846         __u8 aes_kw;
 847         __u8 dea_kw;
 848         __u8 apie;
 849 };
 850
 851 #define APCB0_MASK_SIZE 1
 852 struct kvm_s390_apcb0 {
 853         __u64 apm[APCB0_MASK_SIZE];             /* 0x0000 */
 854         __u64 aqm[APCB0_MASK_SIZE];             /* 0x0008 */
 855         __u64 adm[APCB0_MASK_SIZE];             /* 0x0010 */
 856         __u64 reserved18;                       /* 0x0018 */
 857 };
 858
 859 #define APCB1_MASK_SIZE 4
 860 struct kvm_s390_apcb1 {
 861         __u64 apm[APCB1_MASK_SIZE];             /* 0x0000 */
 862         __u64 aqm[APCB1_MASK_SIZE];             /* 0x0020 */
 863         __u64 adm[APCB1_MASK_SIZE];             /* 0x0040 */
 864         __u64 reserved60[4];                    /* 0x0060 */
 865 };
 866
 867 struct kvm_s390_crypto_cb {
 868         struct kvm_s390_apcb0 apcb0;            /* 0x0000 */
 869         __u8   reserved20[0x0048 - 0x0020];     /* 0x0020 */
 870         __u8   dea_wrapping_key_mask[24];       /* 0x0048 */
 871         __u8   aes_wrapping_key_mask[32];       /* 0x0060 */
 872         struct kvm_s390_apcb1 apcb1;            /* 0x0080 */
 873 };
 874
 875 struct kvm_s390_gisa {
 876         union {
 877                 struct { /* common to all formats */
 878                         u32 next_alert;
 879                         u8  ipm;
 880                         u8  reserved01[2];
 881                         u8  iam;
 882                 };
 883                 struct { /* format 0 */
 884                         u32 next_alert;
 885                         u8  ipm;
 886                         u8  reserved01;
 887                         u8  : 6;
 888                         u8  g : 1;
 889                         u8  c : 1;
 890                         u8  iam;
 891                         u8  reserved02[4];
 892                         u32 airq_count;
 893                 } g0;
 894                 struct { /* format 1 */
 895                         u32 next_alert;
 896                         u8  ipm;
 897                         u8  simm;
 898                         u8  nimm;
 899                         u8  iam;
 900                         u8  aism[8];
 901                         u8  : 6;
 902                         u8  g : 1;
 903                         u8  c : 1;
 904                         u8  reserved03[11];
 905                         u32 airq_count;
 906                 } g1;
 907                 struct {
 908                         u64 word[4];
 909                 } u64;
 910         };
 911 };
 912
 913 struct kvm_s390_gib {
 914         u32 alert_list_origin;
 915         u32 reserved01;
 916         u8:5;
 917         u8  nisc:3;
 918         u8  reserved03[3];
 919         u32 reserved04[5];
 920 };
 921
 922 /*
 923  * sie_page2 has to be allocated as DMA because fac_list, crycb and
 924  * gisa need 31bit addresses in the sie control block.
 925  */
 926 struct sie_page2 {
 927         __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
 928         struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
 929         struct kvm_s390_gisa gisa;                      /* 0x0900 */
 930         struct kvm *kvm;                                /* 0x0920 */
 931         u8 reserved928[0x1000 - 0x928];                 /* 0x0928 */
 932 };
 933
 934 struct kvm_s390_vsie {
 935         struct mutex mutex;
 936         struct radix_tree_root addr_to_page;
 937         int page_count;
 938         int next;
 939         struct page *pages[KVM_MAX_VCPUS];
 940 };
 941
 942 struct kvm_s390_gisa_iam {
 943         u8 mask;
 944         spinlock_t ref_lock;
 945         u32 ref_count[MAX_ISC + 1];
 946 };
 947
 948 struct kvm_s390_gisa_interrupt {
 949         struct kvm_s390_gisa *origin;
 950         struct kvm_s390_gisa_iam alert;
 951         struct hrtimer timer;
 952         u64 expires;
 953         DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
 954 };
 955
 956 struct kvm_s390_pv {
 957         u64 handle;
 958         u64 guest_len;
 959         unsigned long stor_base;
 960         void *stor_var;
 961         bool dumping;
 962         void *set_aside;
 963         struct list_head need_cleanup;
 964         struct mmu_notifier mmu_notifier;
 965 };
 966
 967 struct kvm_arch{
 968         void *sca;
 969         int use_esca;
 970         rwlock_t sca_lock;
 971         debug_info_t *dbf;
 972         struct kvm_s390_float_interrupt float_int;
 973         struct kvm_device *flic;
 974         struct gmap *gmap;
 975         unsigned long mem_limit;
 976         int css_support;
 977         int use_irqchip;
 978         int use_cmma;
 979         int use_pfmfi;
 980         int use_skf;
 981         int use_zpci_interp;
 982         int user_cpu_state_ctrl;
 983         int user_sigp;
 984         int user_stsi;
 985         int user_instr0;
 986         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 987         wait_queue_head_t ipte_wq;
 988         int ipte_lock_count;
 989         struct mutex ipte_mutex;
 990         spinlock_t start_stop_lock;
 991         struct sie_page2 *sie_page2;
 992         struct kvm_s390_cpu_model model;
 993         struct kvm_s390_crypto crypto;
 994         struct kvm_s390_vsie vsie;
 995         u8 epdx;
 996         u64 epoch;
 997         int migration_mode;
 998         atomic64_t cmma_dirty_pages;
 999         /* subset of available cpu features enabled by user space */
1000         DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
1001         /* indexed by vcpu_idx */
1002         DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
1003         struct kvm_s390_gisa_interrupt gisa_int;
1004         struct kvm_s390_pv pv;
1005         struct list_head kzdev_list;
1006         spinlock_t kzdev_list_lock;
1007 };
1008
1009 #define KVM_HVA_ERR_BAD         (-1UL)
1010 #define KVM_HVA_ERR_RO_BAD      (-2UL)
1011
1012 static inline bool kvm_is_error_hva(unsigned long addr)
1013 {
1014         return IS_ERR_VALUE(addr);
1015 }
1016
1017 #define ASYNC_PF_PER_VCPU       64
1018 struct kvm_arch_async_pf {
1019         unsigned long pfault_token;
1020 };
1021
1022 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
1023
1024 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1025                                struct kvm_async_pf *work);
1026
1027 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1028                                      struct kvm_async_pf *work);
1029
1030 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1031                                  struct kvm_async_pf *work);
1032
1033 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
1034
1035 void kvm_arch_crypto_clear_masks(struct kvm *kvm);
1036 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
1037                                unsigned long *aqm, unsigned long *adm);
1038
1039 int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa,
1040              unsigned long gasce);
1041
1042 static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa, unsigned long gasce)
1043 {
1044         return __sie64a(virt_to_phys(sie_block), sie_block, rsa, gasce);
1045 }
1046
1047 extern char sie_exit;
1048
1049 bool kvm_s390_pv_is_protected(struct kvm *kvm);
1050 bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu);
1051
1052 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
1053 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
1054
1055 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
1056 static inline void kvm_arch_free_memslot(struct kvm *kvm,
1057                                          struct kvm_memory_slot *slot) {}
1058 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
1059 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
1060 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
1061                 struct kvm_memory_slot *slot) {}
1062 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
1063 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
1064
1065 #define __KVM_HAVE_ARCH_VM_FREE
1066 void kvm_arch_free_vm(struct kvm *kvm);
1067
1068 struct zpci_kvm_hook {
1069         int (*kvm_register)(void *opaque, struct kvm *kvm);
1070         void (*kvm_unregister)(void *opaque);
1071 };
1072
1073 extern struct zpci_kvm_hook zpci_kvm_hook;
1074
1075 #endif