arch/s390/include/asm/kvm_host.h

   1 /*
   2  * definition for kernel virtual machines on s390
   3  *
   4  * Copyright IBM Corp. 2008, 2009
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License (version 2 only)
   8  * as published by the Free Software Foundation.
   9  *
  10  *    Author(s): Carsten Otte <cotte@de.ibm.com>
  11  */
  12
  13
  14 #ifndef ASM_KVM_HOST_H
  15 #define ASM_KVM_HOST_H
  16
  17 #include <linux/types.h>
  18 #include <linux/hrtimer.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/kvm_types.h>
  21 #include <linux/kvm_host.h>
  22 #include <linux/kvm.h>
  23 #include <linux/seqlock.h>
  24 #include <asm/debug.h>
  25 #include <asm/cpu.h>
  26 #include <asm/fpu/api.h>
  27 #include <asm/isc.h>
  28 #include <asm/guarded_storage.h>
  29
  30 #define KVM_S390_BSCA_CPU_SLOTS 64
  31 #define KVM_S390_ESCA_CPU_SLOTS 248
  32 #define KVM_MAX_VCPUS 255
  33 #define KVM_USER_MEM_SLOTS 32
  34
  35 /*
  36  * These seem to be used for allocating ->chip in the routing table,
  37  * which we don't use. 4096 is an out-of-thin-air value. If we need
  38  * to look at ->chip later on, we'll need to revisit this.
  39  */
  40 #define KVM_NR_IRQCHIPS 1
  41 #define KVM_IRQCHIP_NUM_PINS 4096
  42 #define KVM_HALT_POLL_NS_DEFAULT 80000
  43
  44 /* s390-specific vcpu->requests bit members */
  45 #define KVM_REQ_ENABLE_IBS         8
  46 #define KVM_REQ_DISABLE_IBS        9
  47 #define KVM_REQ_ICPT_OPEREXC       10
  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 } __packed;
  60
  61 union esca_sigp_ctrl {
  62         __u16 value;
  63         struct {
  64                 __u8 c : 1;
  65                 __u8 reserved: 7;
  66                 __u8 scn;
  67         };
  68 } __packed;
  69
  70 struct esca_entry {
  71         union esca_sigp_ctrl sigp_ctrl;
  72         __u16   reserved1[3];
  73         __u64   sda;
  74         __u64   reserved2[6];
  75 } __packed;
  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 } __attribute__((packed));
  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 } __attribute__((packed));
 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 } __packed;
 109
 110 #define CPUSTAT_STOPPED    0x80000000
 111 #define CPUSTAT_WAIT       0x10000000
 112 #define CPUSTAT_ECALL_PEND 0x08000000
 113 #define CPUSTAT_STOP_INT   0x04000000
 114 #define CPUSTAT_IO_INT     0x02000000
 115 #define CPUSTAT_EXT_INT    0x01000000
 116 #define CPUSTAT_RUNNING    0x00800000
 117 #define CPUSTAT_RETAINED   0x00400000
 118 #define CPUSTAT_TIMING_SUB 0x00020000
 119 #define CPUSTAT_SIE_SUB    0x00010000
 120 #define CPUSTAT_RRF        0x00008000
 121 #define CPUSTAT_SLSV       0x00004000
 122 #define CPUSTAT_SLSR       0x00002000
 123 #define CPUSTAT_ZARCH      0x00000800
 124 #define CPUSTAT_MCDS       0x00000100
 125 #define CPUSTAT_KSS        0x00000200
 126 #define CPUSTAT_SM         0x00000080
 127 #define CPUSTAT_IBS        0x00000040
 128 #define CPUSTAT_GED2       0x00000010
 129 #define CPUSTAT_G          0x00000008
 130 #define CPUSTAT_GED        0x00000004
 131 #define CPUSTAT_J          0x00000002
 132 #define CPUSTAT_P          0x00000001
 133
 134 struct kvm_s390_sie_block {
 135         atomic_t cpuflags;              /* 0x0000 */
 136         __u32 : 1;                      /* 0x0004 */
 137         __u32 prefix : 18;
 138         __u32 : 1;
 139         __u32 ibc : 12;
 140         __u8    reserved08[4];          /* 0x0008 */
 141 #define PROG_IN_SIE (1<<0)
 142         __u32   prog0c;                 /* 0x000c */
 143         __u8    reserved10[16];         /* 0x0010 */
 144 #define PROG_BLOCK_SIE  (1<<0)
 145 #define PROG_REQUEST    (1<<1)
 146         atomic_t prog20;                /* 0x0020 */
 147         __u8    reserved24[4];          /* 0x0024 */
 148         __u64   cputm;                  /* 0x0028 */
 149         __u64   ckc;                    /* 0x0030 */
 150         __u64   epoch;                  /* 0x0038 */
 151         __u32   svcc;                   /* 0x0040 */
 152 #define LCTL_CR0        0x8000
 153 #define LCTL_CR6        0x0200
 154 #define LCTL_CR9        0x0040
 155 #define LCTL_CR10       0x0020
 156 #define LCTL_CR11       0x0010
 157 #define LCTL_CR14       0x0002
 158         __u16   lctl;                   /* 0x0044 */
 159         __s16   icpua;                  /* 0x0046 */
 160 #define ICTL_OPEREXC    0x80000000
 161 #define ICTL_PINT       0x20000000
 162 #define ICTL_LPSW       0x00400000
 163 #define ICTL_STCTL      0x00040000
 164 #define ICTL_ISKE       0x00004000
 165 #define ICTL_SSKE       0x00002000
 166 #define ICTL_RRBE       0x00001000
 167 #define ICTL_TPROT      0x00000200
 168         __u32   ictl;                   /* 0x0048 */
 169 #define ECA_CEI         0x80000000
 170 #define ECA_IB          0x40000000
 171 #define ECA_SIGPI       0x10000000
 172 #define ECA_MVPGI       0x01000000
 173 #define ECA_VX          0x00020000
 174 #define ECA_PROTEXCI    0x00002000
 175 #define ECA_SII         0x00000001
 176         __u32   eca;                    /* 0x004c */
 177 #define ICPT_INST       0x04
 178 #define ICPT_PROGI      0x08
 179 #define ICPT_INSTPROGI  0x0C
 180 #define ICPT_EXTREQ     0x10
 181 #define ICPT_EXTINT     0x14
 182 #define ICPT_IOREQ      0x18
 183 #define ICPT_WAIT       0x1c
 184 #define ICPT_VALIDITY   0x20
 185 #define ICPT_STOP       0x28
 186 #define ICPT_OPEREXC    0x2C
 187 #define ICPT_PARTEXEC   0x38
 188 #define ICPT_IOINST     0x40
 189 #define ICPT_KSS        0x5c
 190         __u8    icptcode;               /* 0x0050 */
 191         __u8    icptstatus;             /* 0x0051 */
 192         __u16   ihcpu;                  /* 0x0052 */
 193         __u8    reserved54[2];          /* 0x0054 */
 194         __u16   ipa;                    /* 0x0056 */
 195         __u32   ipb;                    /* 0x0058 */
 196         __u32   scaoh;                  /* 0x005c */
 197         __u8    reserved60;             /* 0x0060 */
 198 #define ECB_GS          0x40
 199 #define ECB_TE          0x10
 200 #define ECB_SRSI        0x04
 201 #define ECB_HOSTPROTINT 0x02
 202         __u8    ecb;                    /* 0x0061 */
 203 #define ECB2_CMMA       0x80
 204 #define ECB2_IEP        0x20
 205 #define ECB2_PFMFI      0x08
 206 #define ECB2_ESCA       0x04
 207         __u8    ecb2;                   /* 0x0062 */
 208 #define ECB3_DEA 0x08
 209 #define ECB3_AES 0x04
 210 #define ECB3_RI  0x01
 211         __u8    ecb3;                   /* 0x0063 */
 212         __u32   scaol;                  /* 0x0064 */
 213         __u8    reserved68[4];          /* 0x0068 */
 214         __u32   todpr;                  /* 0x006c */
 215         __u8    reserved70[16];         /* 0x0070 */
 216         __u64   mso;                    /* 0x0080 */
 217         __u64   msl;                    /* 0x0088 */
 218         psw_t   gpsw;                   /* 0x0090 */
 219         __u64   gg14;                   /* 0x00a0 */
 220         __u64   gg15;                   /* 0x00a8 */
 221         __u8    reservedb0[20];         /* 0x00b0 */
 222         __u16   extcpuaddr;             /* 0x00c4 */
 223         __u16   eic;                    /* 0x00c6 */
 224         __u32   reservedc8;             /* 0x00c8 */
 225         __u16   pgmilc;                 /* 0x00cc */
 226         __u16   iprcc;                  /* 0x00ce */
 227         __u32   dxc;                    /* 0x00d0 */
 228         __u16   mcn;                    /* 0x00d4 */
 229         __u8    perc;                   /* 0x00d6 */
 230         __u8    peratmid;               /* 0x00d7 */
 231         __u64   peraddr;                /* 0x00d8 */
 232         __u8    eai;                    /* 0x00e0 */
 233         __u8    peraid;                 /* 0x00e1 */
 234         __u8    oai;                    /* 0x00e2 */
 235         __u8    armid;                  /* 0x00e3 */
 236         __u8    reservede4[4];          /* 0x00e4 */
 237         __u64   tecmc;                  /* 0x00e8 */
 238         __u8    reservedf0[12];         /* 0x00f0 */
 239 #define CRYCB_FORMAT1 0x00000001
 240 #define CRYCB_FORMAT2 0x00000003
 241         __u32   crycbd;                 /* 0x00fc */
 242         __u64   gcr[16];                /* 0x0100 */
 243         __u64   gbea;                   /* 0x0180 */
 244         __u8    reserved188[8];         /* 0x0188 */
 245         __u64   sdnxo;                  /* 0x0190 */
 246         __u8    reserved198[8];         /* 0x0198 */
 247         __u32   fac;                    /* 0x01a0 */
 248         __u8    reserved1a4[20];        /* 0x01a4 */
 249         __u64   cbrlo;                  /* 0x01b8 */
 250         __u8    reserved1c0[8];         /* 0x01c0 */
 251 #define ECD_HOSTREGMGMT 0x20000000
 252         __u32   ecd;                    /* 0x01c8 */
 253         __u8    reserved1cc[18];        /* 0x01cc */
 254         __u64   pp;                     /* 0x01de */
 255         __u8    reserved1e6[2];         /* 0x01e6 */
 256         __u64   itdba;                  /* 0x01e8 */
 257         __u64   riccbd;                 /* 0x01f0 */
 258         __u64   gvrd;                   /* 0x01f8 */
 259 } __attribute__((packed));
 260
 261 struct kvm_s390_itdb {
 262         __u8    data[256];
 263 } __packed;
 264
 265 struct sie_page {
 266         struct kvm_s390_sie_block sie_block;
 267         __u8 reserved200[1024];         /* 0x0200 */
 268         struct kvm_s390_itdb itdb;      /* 0x0600 */
 269         __u8 reserved700[2304];         /* 0x0700 */
 270 } __packed;
 271
 272 struct kvm_vcpu_stat {
 273         u64 exit_userspace;
 274         u64 exit_null;
 275         u64 exit_external_request;
 276         u64 exit_external_interrupt;
 277         u64 exit_stop_request;
 278         u64 exit_validity;
 279         u64 exit_instruction;
 280         u64 exit_pei;
 281         u64 halt_successful_poll;
 282         u64 halt_attempted_poll;
 283         u64 halt_poll_invalid;
 284         u64 halt_wakeup;
 285         u64 instruction_lctl;
 286         u64 instruction_lctlg;
 287         u64 instruction_stctl;
 288         u64 instruction_stctg;
 289         u64 exit_program_interruption;
 290         u64 exit_instr_and_program;
 291         u64 exit_operation_exception;
 292         u64 deliver_external_call;
 293         u64 deliver_emergency_signal;
 294         u64 deliver_service_signal;
 295         u64 deliver_virtio_interrupt;
 296         u64 deliver_stop_signal;
 297         u64 deliver_prefix_signal;
 298         u64 deliver_restart_signal;
 299         u64 deliver_program_int;
 300         u64 deliver_io_int;
 301         u64 exit_wait_state;
 302         u64 instruction_pfmf;
 303         u64 instruction_stidp;
 304         u64 instruction_spx;
 305         u64 instruction_stpx;
 306         u64 instruction_stap;
 307         u64 instruction_storage_key;
 308         u64 instruction_ipte_interlock;
 309         u64 instruction_stsch;
 310         u64 instruction_chsc;
 311         u64 instruction_stsi;
 312         u64 instruction_stfl;
 313         u64 instruction_tprot;
 314         u64 instruction_sie;
 315         u64 instruction_essa;
 316         u64 instruction_sthyi;
 317         u64 instruction_sigp_sense;
 318         u64 instruction_sigp_sense_running;
 319         u64 instruction_sigp_external_call;
 320         u64 instruction_sigp_emergency;
 321         u64 instruction_sigp_cond_emergency;
 322         u64 instruction_sigp_start;
 323         u64 instruction_sigp_stop;
 324         u64 instruction_sigp_stop_store_status;
 325         u64 instruction_sigp_store_status;
 326         u64 instruction_sigp_store_adtl_status;
 327         u64 instruction_sigp_arch;
 328         u64 instruction_sigp_prefix;
 329         u64 instruction_sigp_restart;
 330         u64 instruction_sigp_init_cpu_reset;
 331         u64 instruction_sigp_cpu_reset;
 332         u64 instruction_sigp_unknown;
 333         u64 diagnose_10;
 334         u64 diagnose_44;
 335         u64 diagnose_9c;
 336         u64 diagnose_258;
 337         u64 diagnose_308;
 338         u64 diagnose_500;
 339 };
 340
 341 #define PGM_OPERATION                   0x01
 342 #define PGM_PRIVILEGED_OP               0x02
 343 #define PGM_EXECUTE                     0x03
 344 #define PGM_PROTECTION                  0x04
 345 #define PGM_ADDRESSING                  0x05
 346 #define PGM_SPECIFICATION               0x06
 347 #define PGM_DATA                        0x07
 348 #define PGM_FIXED_POINT_OVERFLOW        0x08
 349 #define PGM_FIXED_POINT_DIVIDE          0x09
 350 #define PGM_DECIMAL_OVERFLOW            0x0a
 351 #define PGM_DECIMAL_DIVIDE              0x0b
 352 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
 353 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
 354 #define PGM_HFP_SIGNIFICANCE            0x0e
 355 #define PGM_HFP_DIVIDE                  0x0f
 356 #define PGM_SEGMENT_TRANSLATION         0x10
 357 #define PGM_PAGE_TRANSLATION            0x11
 358 #define PGM_TRANSLATION_SPEC            0x12
 359 #define PGM_SPECIAL_OPERATION           0x13
 360 #define PGM_OPERAND                     0x15
 361 #define PGM_TRACE_TABEL                 0x16
 362 #define PGM_VECTOR_PROCESSING           0x1b
 363 #define PGM_SPACE_SWITCH                0x1c
 364 #define PGM_HFP_SQUARE_ROOT             0x1d
 365 #define PGM_PC_TRANSLATION_SPEC         0x1f
 366 #define PGM_AFX_TRANSLATION             0x20
 367 #define PGM_ASX_TRANSLATION             0x21
 368 #define PGM_LX_TRANSLATION              0x22
 369 #define PGM_EX_TRANSLATION              0x23
 370 #define PGM_PRIMARY_AUTHORITY           0x24
 371 #define PGM_SECONDARY_AUTHORITY         0x25
 372 #define PGM_LFX_TRANSLATION             0x26
 373 #define PGM_LSX_TRANSLATION             0x27
 374 #define PGM_ALET_SPECIFICATION          0x28
 375 #define PGM_ALEN_TRANSLATION            0x29
 376 #define PGM_ALE_SEQUENCE                0x2a
 377 #define PGM_ASTE_VALIDITY               0x2b
 378 #define PGM_ASTE_SEQUENCE               0x2c
 379 #define PGM_EXTENDED_AUTHORITY          0x2d
 380 #define PGM_LSTE_SEQUENCE               0x2e
 381 #define PGM_ASTE_INSTANCE               0x2f
 382 #define PGM_STACK_FULL                  0x30
 383 #define PGM_STACK_EMPTY                 0x31
 384 #define PGM_STACK_SPECIFICATION         0x32
 385 #define PGM_STACK_TYPE                  0x33
 386 #define PGM_STACK_OPERATION             0x34
 387 #define PGM_ASCE_TYPE                   0x38
 388 #define PGM_REGION_FIRST_TRANS          0x39
 389 #define PGM_REGION_SECOND_TRANS         0x3a
 390 #define PGM_REGION_THIRD_TRANS          0x3b
 391 #define PGM_MONITOR                     0x40
 392 #define PGM_PER                         0x80
 393 #define PGM_CRYPTO_OPERATION            0x119
 394
 395 /* irq types in order of priority */
 396 enum irq_types {
 397         IRQ_PEND_MCHK_EX = 0,
 398         IRQ_PEND_SVC,
 399         IRQ_PEND_PROG,
 400         IRQ_PEND_MCHK_REP,
 401         IRQ_PEND_EXT_IRQ_KEY,
 402         IRQ_PEND_EXT_MALFUNC,
 403         IRQ_PEND_EXT_EMERGENCY,
 404         IRQ_PEND_EXT_EXTERNAL,
 405         IRQ_PEND_EXT_CLOCK_COMP,
 406         IRQ_PEND_EXT_CPU_TIMER,
 407         IRQ_PEND_EXT_TIMING,
 408         IRQ_PEND_EXT_SERVICE,
 409         IRQ_PEND_EXT_HOST,
 410         IRQ_PEND_PFAULT_INIT,
 411         IRQ_PEND_PFAULT_DONE,
 412         IRQ_PEND_VIRTIO,
 413         IRQ_PEND_IO_ISC_0,
 414         IRQ_PEND_IO_ISC_1,
 415         IRQ_PEND_IO_ISC_2,
 416         IRQ_PEND_IO_ISC_3,
 417         IRQ_PEND_IO_ISC_4,
 418         IRQ_PEND_IO_ISC_5,
 419         IRQ_PEND_IO_ISC_6,
 420         IRQ_PEND_IO_ISC_7,
 421         IRQ_PEND_SIGP_STOP,
 422         IRQ_PEND_RESTART,
 423         IRQ_PEND_SET_PREFIX,
 424         IRQ_PEND_COUNT
 425 };
 426
 427 /* We have 2M for virtio device descriptor pages. Smallest amount of
 428  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 429  */
 430 #define KVM_S390_MAX_VIRTIO_IRQS 87381
 431
 432 /*
 433  * Repressible (non-floating) machine check interrupts
 434  * subclass bits in MCIC
 435  */
 436 #define MCHK_EXTD_BIT 58
 437 #define MCHK_DEGR_BIT 56
 438 #define MCHK_WARN_BIT 55
 439 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 440                        (1UL << MCHK_EXTD_BIT) | \
 441                        (1UL << MCHK_WARN_BIT))
 442
 443 /* Exigent machine check interrupts subclass bits in MCIC */
 444 #define MCHK_SD_BIT 63
 445 #define MCHK_PD_BIT 62
 446 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 447
 448 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 449                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 450                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 451                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 452                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 453                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 454                            (1UL << IRQ_PEND_EXT_TIMING)     | \
 455                            (1UL << IRQ_PEND_EXT_HOST)       | \
 456                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
 457                            (1UL << IRQ_PEND_VIRTIO)         | \
 458                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
 459                            (1UL << IRQ_PEND_PFAULT_DONE))
 460
 461 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 462                           (1UL << IRQ_PEND_IO_ISC_1) | \
 463                           (1UL << IRQ_PEND_IO_ISC_2) | \
 464                           (1UL << IRQ_PEND_IO_ISC_3) | \
 465                           (1UL << IRQ_PEND_IO_ISC_4) | \
 466                           (1UL << IRQ_PEND_IO_ISC_5) | \
 467                           (1UL << IRQ_PEND_IO_ISC_6) | \
 468                           (1UL << IRQ_PEND_IO_ISC_7))
 469
 470 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 471                             (1UL << IRQ_PEND_MCHK_EX))
 472
 473 struct kvm_s390_interrupt_info {
 474         struct list_head list;
 475         u64     type;
 476         union {
 477                 struct kvm_s390_io_info io;
 478                 struct kvm_s390_ext_info ext;
 479                 struct kvm_s390_pgm_info pgm;
 480                 struct kvm_s390_emerg_info emerg;
 481                 struct kvm_s390_extcall_info extcall;
 482                 struct kvm_s390_prefix_info prefix;
 483                 struct kvm_s390_stop_info stop;
 484                 struct kvm_s390_mchk_info mchk;
 485         };
 486 };
 487
 488 struct kvm_s390_irq_payload {
 489         struct kvm_s390_io_info io;
 490         struct kvm_s390_ext_info ext;
 491         struct kvm_s390_pgm_info pgm;
 492         struct kvm_s390_emerg_info emerg;
 493         struct kvm_s390_extcall_info extcall;
 494         struct kvm_s390_prefix_info prefix;
 495         struct kvm_s390_stop_info stop;
 496         struct kvm_s390_mchk_info mchk;
 497 };
 498
 499 struct kvm_s390_local_interrupt {
 500         spinlock_t lock;
 501         struct kvm_s390_float_interrupt *float_int;
 502         struct swait_queue_head *wq;
 503         atomic_t *cpuflags;
 504         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 505         struct kvm_s390_irq_payload irq;
 506         unsigned long pending_irqs;
 507 };
 508
 509 #define FIRQ_LIST_IO_ISC_0 0
 510 #define FIRQ_LIST_IO_ISC_1 1
 511 #define FIRQ_LIST_IO_ISC_2 2
 512 #define FIRQ_LIST_IO_ISC_3 3
 513 #define FIRQ_LIST_IO_ISC_4 4
 514 #define FIRQ_LIST_IO_ISC_5 5
 515 #define FIRQ_LIST_IO_ISC_6 6
 516 #define FIRQ_LIST_IO_ISC_7 7
 517 #define FIRQ_LIST_PFAULT   8
 518 #define FIRQ_LIST_VIRTIO   9
 519 #define FIRQ_LIST_COUNT   10
 520 #define FIRQ_CNTR_IO       0
 521 #define FIRQ_CNTR_SERVICE  1
 522 #define FIRQ_CNTR_VIRTIO   2
 523 #define FIRQ_CNTR_PFAULT   3
 524 #define FIRQ_MAX_COUNT     4
 525
 526 /* mask the AIS mode for a given ISC */
 527 #define AIS_MODE_MASK(isc) (0x80 >> isc)
 528
 529 #define KVM_S390_AIS_MODE_ALL    0
 530 #define KVM_S390_AIS_MODE_SINGLE 1
 531
 532 struct kvm_s390_float_interrupt {
 533         unsigned long pending_irqs;
 534         spinlock_t lock;
 535         struct list_head lists[FIRQ_LIST_COUNT];
 536         int counters[FIRQ_MAX_COUNT];
 537         struct kvm_s390_mchk_info mchk;
 538         struct kvm_s390_ext_info srv_signal;
 539         int next_rr_cpu;
 540         unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
 541         struct mutex ais_lock;
 542         u8 simm;
 543         u8 nimm;
 544         int ais_enabled;
 545 };
 546
 547 struct kvm_hw_wp_info_arch {
 548         unsigned long addr;
 549         unsigned long phys_addr;
 550         int len;
 551         char *old_data;
 552 };
 553
 554 struct kvm_hw_bp_info_arch {
 555         unsigned long addr;
 556         int len;
 557 };
 558
 559 /*
 560  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 561  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 562  * arch/s390/include/uapi/asm/kvm.h
 563  */
 564 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 565
 566 #define guestdbg_enabled(vcpu) \
 567                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 568 #define guestdbg_sstep_enabled(vcpu) \
 569                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 570 #define guestdbg_hw_bp_enabled(vcpu) \
 571                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 572 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 573                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 574
 575 struct kvm_guestdbg_info_arch {
 576         unsigned long cr0;
 577         unsigned long cr9;
 578         unsigned long cr10;
 579         unsigned long cr11;
 580         struct kvm_hw_bp_info_arch *hw_bp_info;
 581         struct kvm_hw_wp_info_arch *hw_wp_info;
 582         int nr_hw_bp;
 583         int nr_hw_wp;
 584         unsigned long last_bp;
 585 };
 586
 587 struct kvm_vcpu_arch {
 588         struct kvm_s390_sie_block *sie_block;
 589         /* if vsie is active, currently executed shadow sie control block */
 590         struct kvm_s390_sie_block *vsie_block;
 591         unsigned int      host_acrs[NUM_ACRS];
 592         struct gs_cb      *host_gscb;
 593         struct fpu        host_fpregs;
 594         struct kvm_s390_local_interrupt local_int;
 595         struct hrtimer    ckc_timer;
 596         struct kvm_s390_pgm_info pgm;
 597         struct gmap *gmap;
 598         /* backup location for the currently enabled gmap when scheduled out */
 599         struct gmap *enabled_gmap;
 600         struct kvm_guestdbg_info_arch guestdbg;
 601         unsigned long pfault_token;
 602         unsigned long pfault_select;
 603         unsigned long pfault_compare;
 604         bool cputm_enabled;
 605         /*
 606          * The seqcount protects updates to cputm_start and sie_block.cputm,
 607          * this way we can have non-blocking reads with consistent values.
 608          * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
 609          * values and to start/stop/enable/disable cpu timer accounting.
 610          */
 611         seqcount_t cputm_seqcount;
 612         __u64 cputm_start;
 613         bool gs_enabled;
 614 };
 615
 616 struct kvm_vm_stat {
 617         ulong remote_tlb_flush;
 618 };
 619
 620 struct kvm_arch_memory_slot {
 621 };
 622
 623 struct s390_map_info {
 624         struct list_head list;
 625         __u64 guest_addr;
 626         __u64 addr;
 627         struct page *page;
 628 };
 629
 630 struct s390_io_adapter {
 631         unsigned int id;
 632         int isc;
 633         bool maskable;
 634         bool masked;
 635         bool swap;
 636         bool suppressible;
 637         struct rw_semaphore maps_lock;
 638         struct list_head maps;
 639         atomic_t nr_maps;
 640 };
 641
 642 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 643 #define MAX_S390_ADAPTER_MAPS 256
 644
 645 /* maximum size of facilities and facility mask is 2k bytes */
 646 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 647 #define S390_ARCH_FAC_LIST_SIZE_U64 \
 648         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 649 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 650 #define S390_ARCH_FAC_MASK_SIZE_U64 \
 651         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 652
 653 struct kvm_s390_cpu_model {
 654         /* facility mask supported by kvm & hosting machine */
 655         __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
 656         /* facility list requested by guest (in dma page) */
 657         __u64 *fac_list;
 658         u64 cpuid;
 659         unsigned short ibc;
 660 };
 661
 662 struct kvm_s390_crypto {
 663         struct kvm_s390_crypto_cb *crycb;
 664         __u32 crycbd;
 665         __u8 aes_kw;
 666         __u8 dea_kw;
 667 };
 668
 669 struct kvm_s390_crypto_cb {
 670         __u8    reserved00[72];                 /* 0x0000 */
 671         __u8    dea_wrapping_key_mask[24];      /* 0x0048 */
 672         __u8    aes_wrapping_key_mask[32];      /* 0x0060 */
 673         __u8    reserved80[128];                /* 0x0080 */
 674 };
 675
 676 /*
 677  * sie_page2 has to be allocated as DMA because fac_list and crycb need
 678  * 31bit addresses in the sie control block.
 679  */
 680 struct sie_page2 {
 681         __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
 682         struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
 683         u8 reserved900[0x1000 - 0x900];                 /* 0x0900 */
 684 } __packed;
 685
 686 struct kvm_s390_vsie {
 687         struct mutex mutex;
 688         struct radix_tree_root addr_to_page;
 689         int page_count;
 690         int next;
 691         struct page *pages[KVM_MAX_VCPUS];
 692 };
 693
 694 struct kvm_arch{
 695         void *sca;
 696         int use_esca;
 697         rwlock_t sca_lock;
 698         debug_info_t *dbf;
 699         struct kvm_s390_float_interrupt float_int;
 700         struct kvm_device *flic;
 701         struct gmap *gmap;
 702         unsigned long mem_limit;
 703         int css_support;
 704         int use_irqchip;
 705         int use_cmma;
 706         int user_cpu_state_ctrl;
 707         int user_sigp;
 708         int user_stsi;
 709         int user_instr0;
 710         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 711         wait_queue_head_t ipte_wq;
 712         int ipte_lock_count;
 713         struct mutex ipte_mutex;
 714         struct ratelimit_state sthyi_limit;
 715         spinlock_t start_stop_lock;
 716         struct sie_page2 *sie_page2;
 717         struct kvm_s390_cpu_model model;
 718         struct kvm_s390_crypto crypto;
 719         struct kvm_s390_vsie vsie;
 720         u64 epoch;
 721         /* subset of available cpu features enabled by user space */
 722         DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
 723 };
 724
 725 #define KVM_HVA_ERR_BAD         (-1UL)
 726 #define KVM_HVA_ERR_RO_BAD      (-2UL)
 727
 728 static inline bool kvm_is_error_hva(unsigned long addr)
 729 {
 730         return IS_ERR_VALUE(addr);
 731 }
 732
 733 #define ASYNC_PF_PER_VCPU       64
 734 struct kvm_arch_async_pf {
 735         unsigned long pfault_token;
 736 };
 737
 738 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
 739
 740 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
 741                                struct kvm_async_pf *work);
 742
 743 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
 744                                      struct kvm_async_pf *work);
 745
 746 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
 747                                  struct kvm_async_pf *work);
 748
 749 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 750 extern char sie_exit;
 751
 752 static inline void kvm_arch_hardware_disable(void) {}
 753 static inline void kvm_arch_check_processor_compat(void *rtn) {}
 754 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
 755 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
 756 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
 757 static inline void kvm_arch_free_memslot(struct kvm *kvm,
 758                 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
 759 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
 760 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
 761 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
 762                 struct kvm_memory_slot *slot) {}
 763 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
 764 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
 765
 766 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
 767
 768 #endif