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 <asm/debug.h> 24 #include <asm/cpu.h> 25 #include <asm/isc.h> 26 27 #define KVM_MAX_VCPUS 64 28 #define KVM_USER_MEM_SLOTS 32 29 30 /* 31 * These seem to be used for allocating ->chip in the routing table, 32 * which we don't use. 4096 is an out-of-thin-air value. If we need 33 * to look at ->chip later on, we'll need to revisit this. 34 */ 35 #define KVM_NR_IRQCHIPS 1 36 #define KVM_IRQCHIP_NUM_PINS 4096 37 38 #define SIGP_CTRL_C 0x00800000 39 40 struct sca_entry { 41 atomic_t ctrl; 42 __u32 reserved; 43 __u64 sda; 44 __u64 reserved2[2]; 45 } __attribute__((packed)); 46 47 union ipte_control { 48 unsigned long val; 49 struct { 50 unsigned long k : 1; 51 unsigned long kh : 31; 52 unsigned long kg : 32; 53 }; 54 }; 55 56 struct sca_block { 57 union ipte_control ipte_control; 58 __u64 reserved[5]; 59 __u64 mcn; 60 __u64 reserved2; 61 struct sca_entry cpu[64]; 62 } __attribute__((packed)); 63 64 #define CPUSTAT_STOPPED 0x80000000 65 #define CPUSTAT_WAIT 0x10000000 66 #define CPUSTAT_ECALL_PEND 0x08000000 67 #define CPUSTAT_STOP_INT 0x04000000 68 #define CPUSTAT_IO_INT 0x02000000 69 #define CPUSTAT_EXT_INT 0x01000000 70 #define CPUSTAT_RUNNING 0x00800000 71 #define CPUSTAT_RETAINED 0x00400000 72 #define CPUSTAT_TIMING_SUB 0x00020000 73 #define CPUSTAT_SIE_SUB 0x00010000 74 #define CPUSTAT_RRF 0x00008000 75 #define CPUSTAT_SLSV 0x00004000 76 #define CPUSTAT_SLSR 0x00002000 77 #define CPUSTAT_ZARCH 0x00000800 78 #define CPUSTAT_MCDS 0x00000100 79 #define CPUSTAT_SM 0x00000080 80 #define CPUSTAT_IBS 0x00000040 81 #define CPUSTAT_G 0x00000008 82 #define CPUSTAT_GED 0x00000004 83 #define CPUSTAT_J 0x00000002 84 #define CPUSTAT_P 0x00000001 85 86 struct kvm_s390_sie_block { 87 atomic_t cpuflags; /* 0x0000 */ 88 __u32 : 1; /* 0x0004 */ 89 __u32 prefix : 18; 90 __u32 : 13; 91 __u8 reserved08[4]; /* 0x0008 */ 92 #define PROG_IN_SIE (1<<0) 93 __u32 prog0c; /* 0x000c */ 94 __u8 reserved10[16]; /* 0x0010 */ 95 #define PROG_BLOCK_SIE 0x00000001 96 atomic_t prog20; /* 0x0020 */ 97 __u8 reserved24[4]; /* 0x0024 */ 98 __u64 cputm; /* 0x0028 */ 99 __u64 ckc; /* 0x0030 */ 100 __u64 epoch; /* 0x0038 */ 101 __u8 reserved40[4]; /* 0x0040 */ 102 #define LCTL_CR0 0x8000 103 #define LCTL_CR6 0x0200 104 #define LCTL_CR9 0x0040 105 #define LCTL_CR10 0x0020 106 #define LCTL_CR11 0x0010 107 #define LCTL_CR14 0x0002 108 __u16 lctl; /* 0x0044 */ 109 __s16 icpua; /* 0x0046 */ 110 #define ICTL_PINT 0x20000000 111 #define ICTL_LPSW 0x00400000 112 #define ICTL_STCTL 0x00040000 113 #define ICTL_ISKE 0x00004000 114 #define ICTL_SSKE 0x00002000 115 #define ICTL_RRBE 0x00001000 116 #define ICTL_TPROT 0x00000200 117 __u32 ictl; /* 0x0048 */ 118 __u32 eca; /* 0x004c */ 119 #define ICPT_INST 0x04 120 #define ICPT_PROGI 0x08 121 #define ICPT_INSTPROGI 0x0C 122 #define ICPT_OPEREXC 0x2C 123 #define ICPT_PARTEXEC 0x38 124 #define ICPT_IOINST 0x40 125 __u8 icptcode; /* 0x0050 */ 126 __u8 reserved51; /* 0x0051 */ 127 __u16 ihcpu; /* 0x0052 */ 128 __u8 reserved54[2]; /* 0x0054 */ 129 __u16 ipa; /* 0x0056 */ 130 __u32 ipb; /* 0x0058 */ 131 __u32 scaoh; /* 0x005c */ 132 __u8 reserved60; /* 0x0060 */ 133 __u8 ecb; /* 0x0061 */ 134 __u8 ecb2; /* 0x0062 */ 135 __u8 reserved63[1]; /* 0x0063 */ 136 __u32 scaol; /* 0x0064 */ 137 __u8 reserved68[4]; /* 0x0068 */ 138 __u32 todpr; /* 0x006c */ 139 __u8 reserved70[32]; /* 0x0070 */ 140 psw_t gpsw; /* 0x0090 */ 141 __u64 gg14; /* 0x00a0 */ 142 __u64 gg15; /* 0x00a8 */ 143 __u8 reservedb0[20]; /* 0x00b0 */ 144 __u16 extcpuaddr; /* 0x00c4 */ 145 __u16 eic; /* 0x00c6 */ 146 __u32 reservedc8; /* 0x00c8 */ 147 __u16 pgmilc; /* 0x00cc */ 148 __u16 iprcc; /* 0x00ce */ 149 __u32 dxc; /* 0x00d0 */ 150 __u16 mcn; /* 0x00d4 */ 151 __u8 perc; /* 0x00d6 */ 152 __u8 peratmid; /* 0x00d7 */ 153 __u64 peraddr; /* 0x00d8 */ 154 __u8 eai; /* 0x00e0 */ 155 __u8 peraid; /* 0x00e1 */ 156 __u8 oai; /* 0x00e2 */ 157 __u8 armid; /* 0x00e3 */ 158 __u8 reservede4[4]; /* 0x00e4 */ 159 __u64 tecmc; /* 0x00e8 */ 160 __u8 reservedf0[12]; /* 0x00f0 */ 161 #define CRYCB_FORMAT1 0x00000001 162 __u32 crycbd; /* 0x00fc */ 163 __u64 gcr[16]; /* 0x0100 */ 164 __u64 gbea; /* 0x0180 */ 165 __u8 reserved188[24]; /* 0x0188 */ 166 __u32 fac; /* 0x01a0 */ 167 __u8 reserved1a4[20]; /* 0x01a4 */ 168 __u64 cbrlo; /* 0x01b8 */ 169 __u8 reserved1c0[30]; /* 0x01c0 */ 170 __u64 pp; /* 0x01de */ 171 __u8 reserved1e6[2]; /* 0x01e6 */ 172 __u64 itdba; /* 0x01e8 */ 173 __u8 reserved1f0[16]; /* 0x01f0 */ 174 } __attribute__((packed)); 175 176 struct kvm_s390_itdb { 177 __u8 data[256]; 178 } __packed; 179 180 struct sie_page { 181 struct kvm_s390_sie_block sie_block; 182 __u8 reserved200[1024]; /* 0x0200 */ 183 struct kvm_s390_itdb itdb; /* 0x0600 */ 184 __u8 reserved700[2304]; /* 0x0700 */ 185 } __packed; 186 187 struct kvm_vcpu_stat { 188 u32 exit_userspace; 189 u32 exit_null; 190 u32 exit_external_request; 191 u32 exit_external_interrupt; 192 u32 exit_stop_request; 193 u32 exit_validity; 194 u32 exit_instruction; 195 u32 halt_wakeup; 196 u32 instruction_lctl; 197 u32 instruction_lctlg; 198 u32 instruction_stctl; 199 u32 instruction_stctg; 200 u32 exit_program_interruption; 201 u32 exit_instr_and_program; 202 u32 deliver_external_call; 203 u32 deliver_emergency_signal; 204 u32 deliver_service_signal; 205 u32 deliver_virtio_interrupt; 206 u32 deliver_stop_signal; 207 u32 deliver_prefix_signal; 208 u32 deliver_restart_signal; 209 u32 deliver_program_int; 210 u32 deliver_io_int; 211 u32 exit_wait_state; 212 u32 instruction_pfmf; 213 u32 instruction_stidp; 214 u32 instruction_spx; 215 u32 instruction_stpx; 216 u32 instruction_stap; 217 u32 instruction_storage_key; 218 u32 instruction_ipte_interlock; 219 u32 instruction_stsch; 220 u32 instruction_chsc; 221 u32 instruction_stsi; 222 u32 instruction_stfl; 223 u32 instruction_tprot; 224 u32 instruction_essa; 225 u32 instruction_sigp_sense; 226 u32 instruction_sigp_sense_running; 227 u32 instruction_sigp_external_call; 228 u32 instruction_sigp_emergency; 229 u32 instruction_sigp_stop; 230 u32 instruction_sigp_arch; 231 u32 instruction_sigp_prefix; 232 u32 instruction_sigp_restart; 233 u32 diagnose_10; 234 u32 diagnose_44; 235 u32 diagnose_9c; 236 }; 237 238 #define PGM_OPERATION 0x01 239 #define PGM_PRIVILEGED_OP 0x02 240 #define PGM_EXECUTE 0x03 241 #define PGM_PROTECTION 0x04 242 #define PGM_ADDRESSING 0x05 243 #define PGM_SPECIFICATION 0x06 244 #define PGM_DATA 0x07 245 #define PGM_FIXED_POINT_OVERFLOW 0x08 246 #define PGM_FIXED_POINT_DIVIDE 0x09 247 #define PGM_DECIMAL_OVERFLOW 0x0a 248 #define PGM_DECIMAL_DIVIDE 0x0b 249 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c 250 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d 251 #define PGM_HFP_SIGNIFICANCE 0x0e 252 #define PGM_HFP_DIVIDE 0x0f 253 #define PGM_SEGMENT_TRANSLATION 0x10 254 #define PGM_PAGE_TRANSLATION 0x11 255 #define PGM_TRANSLATION_SPEC 0x12 256 #define PGM_SPECIAL_OPERATION 0x13 257 #define PGM_OPERAND 0x15 258 #define PGM_TRACE_TABEL 0x16 259 #define PGM_SPACE_SWITCH 0x1c 260 #define PGM_HFP_SQUARE_ROOT 0x1d 261 #define PGM_PC_TRANSLATION_SPEC 0x1f 262 #define PGM_AFX_TRANSLATION 0x20 263 #define PGM_ASX_TRANSLATION 0x21 264 #define PGM_LX_TRANSLATION 0x22 265 #define PGM_EX_TRANSLATION 0x23 266 #define PGM_PRIMARY_AUTHORITY 0x24 267 #define PGM_SECONDARY_AUTHORITY 0x25 268 #define PGM_LFX_TRANSLATION 0x26 269 #define PGM_LSX_TRANSLATION 0x27 270 #define PGM_ALET_SPECIFICATION 0x28 271 #define PGM_ALEN_TRANSLATION 0x29 272 #define PGM_ALE_SEQUENCE 0x2a 273 #define PGM_ASTE_VALIDITY 0x2b 274 #define PGM_ASTE_SEQUENCE 0x2c 275 #define PGM_EXTENDED_AUTHORITY 0x2d 276 #define PGM_LSTE_SEQUENCE 0x2e 277 #define PGM_ASTE_INSTANCE 0x2f 278 #define PGM_STACK_FULL 0x30 279 #define PGM_STACK_EMPTY 0x31 280 #define PGM_STACK_SPECIFICATION 0x32 281 #define PGM_STACK_TYPE 0x33 282 #define PGM_STACK_OPERATION 0x34 283 #define PGM_ASCE_TYPE 0x38 284 #define PGM_REGION_FIRST_TRANS 0x39 285 #define PGM_REGION_SECOND_TRANS 0x3a 286 #define PGM_REGION_THIRD_TRANS 0x3b 287 #define PGM_MONITOR 0x40 288 #define PGM_PER 0x80 289 #define PGM_CRYPTO_OPERATION 0x119 290 291 struct kvm_s390_interrupt_info { 292 struct list_head list; 293 u64 type; 294 union { 295 struct kvm_s390_io_info io; 296 struct kvm_s390_ext_info ext; 297 struct kvm_s390_pgm_info pgm; 298 struct kvm_s390_emerg_info emerg; 299 struct kvm_s390_extcall_info extcall; 300 struct kvm_s390_prefix_info prefix; 301 struct kvm_s390_mchk_info mchk; 302 }; 303 }; 304 305 /* for local_interrupt.action_flags */ 306 #define ACTION_STORE_ON_STOP (1<<0) 307 #define ACTION_STOP_ON_STOP (1<<1) 308 309 struct kvm_s390_local_interrupt { 310 spinlock_t lock; 311 struct list_head list; 312 atomic_t active; 313 struct kvm_s390_float_interrupt *float_int; 314 wait_queue_head_t *wq; 315 atomic_t *cpuflags; 316 unsigned int action_bits; 317 }; 318 319 struct kvm_s390_float_interrupt { 320 spinlock_t lock; 321 struct list_head list; 322 atomic_t active; 323 int next_rr_cpu; 324 unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)]; 325 unsigned int irq_count; 326 }; 327 328 struct kvm_hw_wp_info_arch { 329 unsigned long addr; 330 unsigned long phys_addr; 331 int len; 332 char *old_data; 333 }; 334 335 struct kvm_hw_bp_info_arch { 336 unsigned long addr; 337 int len; 338 }; 339 340 /* 341 * Only the upper 16 bits of kvm_guest_debug->control are arch specific. 342 * Further KVM_GUESTDBG flags which an be used from userspace can be found in 343 * arch/s390/include/uapi/asm/kvm.h 344 */ 345 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000 346 347 #define guestdbg_enabled(vcpu) \ 348 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) 349 #define guestdbg_sstep_enabled(vcpu) \ 350 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) 351 #define guestdbg_hw_bp_enabled(vcpu) \ 352 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) 353 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \ 354 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING)) 355 356 struct kvm_guestdbg_info_arch { 357 unsigned long cr0; 358 unsigned long cr9; 359 unsigned long cr10; 360 unsigned long cr11; 361 struct kvm_hw_bp_info_arch *hw_bp_info; 362 struct kvm_hw_wp_info_arch *hw_wp_info; 363 int nr_hw_bp; 364 int nr_hw_wp; 365 unsigned long last_bp; 366 }; 367 368 struct kvm_vcpu_arch { 369 struct kvm_s390_sie_block *sie_block; 370 s390_fp_regs host_fpregs; 371 unsigned int host_acrs[NUM_ACRS]; 372 s390_fp_regs guest_fpregs; 373 struct kvm_s390_local_interrupt local_int; 374 struct hrtimer ckc_timer; 375 struct kvm_s390_pgm_info pgm; 376 union { 377 struct cpuid cpu_id; 378 u64 stidp_data; 379 }; 380 struct gmap *gmap; 381 struct kvm_guestdbg_info_arch guestdbg; 382 #define KVM_S390_PFAULT_TOKEN_INVALID (-1UL) 383 unsigned long pfault_token; 384 unsigned long pfault_select; 385 unsigned long pfault_compare; 386 }; 387 388 struct kvm_vm_stat { 389 u32 remote_tlb_flush; 390 }; 391 392 struct kvm_arch_memory_slot { 393 }; 394 395 struct s390_map_info { 396 struct list_head list; 397 __u64 guest_addr; 398 __u64 addr; 399 struct page *page; 400 }; 401 402 struct s390_io_adapter { 403 unsigned int id; 404 int isc; 405 bool maskable; 406 bool masked; 407 bool swap; 408 struct rw_semaphore maps_lock; 409 struct list_head maps; 410 atomic_t nr_maps; 411 }; 412 413 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8) 414 #define MAX_S390_ADAPTER_MAPS 256 415 416 struct kvm_s390_crypto { 417 struct kvm_s390_crypto_cb *crycb; 418 __u32 crycbd; 419 }; 420 421 struct kvm_s390_crypto_cb { 422 __u8 reserved00[128]; /* 0x0000 */ 423 }; 424 425 struct kvm_arch{ 426 struct sca_block *sca; 427 debug_info_t *dbf; 428 struct kvm_s390_float_interrupt float_int; 429 struct kvm_device *flic; 430 struct gmap *gmap; 431 int css_support; 432 int use_irqchip; 433 int use_cmma; 434 int user_cpu_state_ctrl; 435 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS]; 436 wait_queue_head_t ipte_wq; 437 spinlock_t start_stop_lock; 438 struct kvm_s390_crypto crypto; 439 }; 440 441 #define KVM_HVA_ERR_BAD (-1UL) 442 #define KVM_HVA_ERR_RO_BAD (-2UL) 443 444 static inline bool kvm_is_error_hva(unsigned long addr) 445 { 446 return IS_ERR_VALUE(addr); 447 } 448 449 #define ASYNC_PF_PER_VCPU 64 450 struct kvm_arch_async_pf { 451 unsigned long pfault_token; 452 }; 453 454 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu); 455 456 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, 457 struct kvm_async_pf *work); 458 459 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, 460 struct kvm_async_pf *work); 461 462 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, 463 struct kvm_async_pf *work); 464 465 extern int sie64a(struct kvm_s390_sie_block *, u64 *); 466 extern char sie_exit; 467 468 static inline void kvm_arch_hardware_disable(void) {} 469 static inline void kvm_arch_check_processor_compat(void *rtn) {} 470 static inline void kvm_arch_exit(void) {} 471 static inline void kvm_arch_sync_events(struct kvm *kvm) {} 472 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {} 473 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} 474 static inline void kvm_arch_free_memslot(struct kvm *kvm, 475 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {} 476 static inline void kvm_arch_memslots_updated(struct kvm *kvm) {} 477 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} 478 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm, 479 struct kvm_memory_slot *slot) {} 480 481 #endif 482