2 * definition for kernel virtual machines on s390
4 * Copyright IBM Corp. 2008, 2009
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.
10 * Author(s): Carsten Otte <cotte@de.ibm.com>
14 #ifndef ASM_KVM_HOST_H
15 #define ASM_KVM_HOST_H
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>
27 #define KVM_MAX_VCPUS 64
28 #define KVM_USER_MEM_SLOTS 32
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.
35 #define KVM_NR_IRQCHIPS 1
36 #define KVM_IRQCHIP_NUM_PINS 4096
38 #define SIGP_CTRL_C 0x80
39 #define SIGP_CTRL_SCN_MASK 0x3f
47 } __attribute__((packed));
53 unsigned long kh : 31;
54 unsigned long kg : 32;
59 union ipte_control ipte_control;
63 struct sca_entry cpu[64];
64 } __attribute__((packed));
66 #define CPUSTAT_STOPPED 0x80000000
67 #define CPUSTAT_WAIT 0x10000000
68 #define CPUSTAT_ECALL_PEND 0x08000000
69 #define CPUSTAT_STOP_INT 0x04000000
70 #define CPUSTAT_IO_INT 0x02000000
71 #define CPUSTAT_EXT_INT 0x01000000
72 #define CPUSTAT_RUNNING 0x00800000
73 #define CPUSTAT_RETAINED 0x00400000
74 #define CPUSTAT_TIMING_SUB 0x00020000
75 #define CPUSTAT_SIE_SUB 0x00010000
76 #define CPUSTAT_RRF 0x00008000
77 #define CPUSTAT_SLSV 0x00004000
78 #define CPUSTAT_SLSR 0x00002000
79 #define CPUSTAT_ZARCH 0x00000800
80 #define CPUSTAT_MCDS 0x00000100
81 #define CPUSTAT_SM 0x00000080
82 #define CPUSTAT_IBS 0x00000040
83 #define CPUSTAT_G 0x00000008
84 #define CPUSTAT_GED 0x00000004
85 #define CPUSTAT_J 0x00000002
86 #define CPUSTAT_P 0x00000001
88 struct kvm_s390_sie_block {
89 atomic_t cpuflags; /* 0x0000 */
90 __u32 : 1; /* 0x0004 */
94 __u8 reserved08[4]; /* 0x0008 */
95 #define PROG_IN_SIE (1<<0)
96 __u32 prog0c; /* 0x000c */
97 __u8 reserved10[16]; /* 0x0010 */
98 #define PROG_BLOCK_SIE 0x00000001
99 atomic_t prog20; /* 0x0020 */
100 __u8 reserved24[4]; /* 0x0024 */
101 __u64 cputm; /* 0x0028 */
102 __u64 ckc; /* 0x0030 */
103 __u64 epoch; /* 0x0038 */
104 __u8 reserved40[4]; /* 0x0040 */
105 #define LCTL_CR0 0x8000
106 #define LCTL_CR6 0x0200
107 #define LCTL_CR9 0x0040
108 #define LCTL_CR10 0x0020
109 #define LCTL_CR11 0x0010
110 #define LCTL_CR14 0x0002
111 __u16 lctl; /* 0x0044 */
112 __s16 icpua; /* 0x0046 */
113 #define ICTL_PINT 0x20000000
114 #define ICTL_LPSW 0x00400000
115 #define ICTL_STCTL 0x00040000
116 #define ICTL_ISKE 0x00004000
117 #define ICTL_SSKE 0x00002000
118 #define ICTL_RRBE 0x00001000
119 #define ICTL_TPROT 0x00000200
120 __u32 ictl; /* 0x0048 */
121 __u32 eca; /* 0x004c */
122 #define ICPT_INST 0x04
123 #define ICPT_PROGI 0x08
124 #define ICPT_INSTPROGI 0x0C
125 #define ICPT_OPEREXC 0x2C
126 #define ICPT_PARTEXEC 0x38
127 #define ICPT_IOINST 0x40
128 __u8 icptcode; /* 0x0050 */
129 __u8 icptstatus; /* 0x0051 */
130 __u16 ihcpu; /* 0x0052 */
131 __u8 reserved54[2]; /* 0x0054 */
132 __u16 ipa; /* 0x0056 */
133 __u32 ipb; /* 0x0058 */
134 __u32 scaoh; /* 0x005c */
135 __u8 reserved60; /* 0x0060 */
136 __u8 ecb; /* 0x0061 */
137 __u8 ecb2; /* 0x0062 */
138 #define ECB3_AES 0x04
139 #define ECB3_DEA 0x08
140 __u8 ecb3; /* 0x0063 */
141 __u32 scaol; /* 0x0064 */
142 __u8 reserved68[4]; /* 0x0068 */
143 __u32 todpr; /* 0x006c */
144 __u8 reserved70[32]; /* 0x0070 */
145 psw_t gpsw; /* 0x0090 */
146 __u64 gg14; /* 0x00a0 */
147 __u64 gg15; /* 0x00a8 */
148 __u8 reservedb0[20]; /* 0x00b0 */
149 __u16 extcpuaddr; /* 0x00c4 */
150 __u16 eic; /* 0x00c6 */
151 __u32 reservedc8; /* 0x00c8 */
152 __u16 pgmilc; /* 0x00cc */
153 __u16 iprcc; /* 0x00ce */
154 __u32 dxc; /* 0x00d0 */
155 __u16 mcn; /* 0x00d4 */
156 __u8 perc; /* 0x00d6 */
157 __u8 peratmid; /* 0x00d7 */
158 __u64 peraddr; /* 0x00d8 */
159 __u8 eai; /* 0x00e0 */
160 __u8 peraid; /* 0x00e1 */
161 __u8 oai; /* 0x00e2 */
162 __u8 armid; /* 0x00e3 */
163 __u8 reservede4[4]; /* 0x00e4 */
164 __u64 tecmc; /* 0x00e8 */
165 __u8 reservedf0[12]; /* 0x00f0 */
166 #define CRYCB_FORMAT1 0x00000001
167 #define CRYCB_FORMAT2 0x00000003
168 __u32 crycbd; /* 0x00fc */
169 __u64 gcr[16]; /* 0x0100 */
170 __u64 gbea; /* 0x0180 */
171 __u8 reserved188[24]; /* 0x0188 */
172 __u32 fac; /* 0x01a0 */
173 __u8 reserved1a4[20]; /* 0x01a4 */
174 __u64 cbrlo; /* 0x01b8 */
175 __u8 reserved1c0[8]; /* 0x01c0 */
176 __u32 ecd; /* 0x01c8 */
177 __u8 reserved1cc[18]; /* 0x01cc */
178 __u64 pp; /* 0x01de */
179 __u8 reserved1e6[2]; /* 0x01e6 */
180 __u64 itdba; /* 0x01e8 */
181 __u8 reserved1f0[16]; /* 0x01f0 */
182 } __attribute__((packed));
184 struct kvm_s390_itdb {
188 struct kvm_s390_vregs {
190 __u8 reserved200[512]; /* for future vector expansion */
194 struct kvm_s390_sie_block sie_block;
195 __u8 reserved200[1024]; /* 0x0200 */
196 struct kvm_s390_itdb itdb; /* 0x0600 */
197 __u8 reserved700[1280]; /* 0x0700 */
198 struct kvm_s390_vregs vregs; /* 0x0c00 */
201 struct kvm_vcpu_stat {
204 u32 exit_external_request;
205 u32 exit_external_interrupt;
206 u32 exit_stop_request;
208 u32 exit_instruction;
209 u32 halt_successful_poll;
211 u32 instruction_lctl;
212 u32 instruction_lctlg;
213 u32 instruction_stctl;
214 u32 instruction_stctg;
215 u32 exit_program_interruption;
216 u32 exit_instr_and_program;
217 u32 deliver_external_call;
218 u32 deliver_emergency_signal;
219 u32 deliver_service_signal;
220 u32 deliver_virtio_interrupt;
221 u32 deliver_stop_signal;
222 u32 deliver_prefix_signal;
223 u32 deliver_restart_signal;
224 u32 deliver_program_int;
227 u32 instruction_pfmf;
228 u32 instruction_stidp;
230 u32 instruction_stpx;
231 u32 instruction_stap;
232 u32 instruction_storage_key;
233 u32 instruction_ipte_interlock;
234 u32 instruction_stsch;
235 u32 instruction_chsc;
236 u32 instruction_stsi;
237 u32 instruction_stfl;
238 u32 instruction_tprot;
239 u32 instruction_essa;
240 u32 instruction_sigp_sense;
241 u32 instruction_sigp_sense_running;
242 u32 instruction_sigp_external_call;
243 u32 instruction_sigp_emergency;
244 u32 instruction_sigp_cond_emergency;
245 u32 instruction_sigp_start;
246 u32 instruction_sigp_stop;
247 u32 instruction_sigp_stop_store_status;
248 u32 instruction_sigp_store_status;
249 u32 instruction_sigp_store_adtl_status;
250 u32 instruction_sigp_arch;
251 u32 instruction_sigp_prefix;
252 u32 instruction_sigp_restart;
253 u32 instruction_sigp_init_cpu_reset;
254 u32 instruction_sigp_cpu_reset;
255 u32 instruction_sigp_unknown;
261 #define PGM_OPERATION 0x01
262 #define PGM_PRIVILEGED_OP 0x02
263 #define PGM_EXECUTE 0x03
264 #define PGM_PROTECTION 0x04
265 #define PGM_ADDRESSING 0x05
266 #define PGM_SPECIFICATION 0x06
267 #define PGM_DATA 0x07
268 #define PGM_FIXED_POINT_OVERFLOW 0x08
269 #define PGM_FIXED_POINT_DIVIDE 0x09
270 #define PGM_DECIMAL_OVERFLOW 0x0a
271 #define PGM_DECIMAL_DIVIDE 0x0b
272 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c
273 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d
274 #define PGM_HFP_SIGNIFICANCE 0x0e
275 #define PGM_HFP_DIVIDE 0x0f
276 #define PGM_SEGMENT_TRANSLATION 0x10
277 #define PGM_PAGE_TRANSLATION 0x11
278 #define PGM_TRANSLATION_SPEC 0x12
279 #define PGM_SPECIAL_OPERATION 0x13
280 #define PGM_OPERAND 0x15
281 #define PGM_TRACE_TABEL 0x16
282 #define PGM_VECTOR_PROCESSING 0x1b
283 #define PGM_SPACE_SWITCH 0x1c
284 #define PGM_HFP_SQUARE_ROOT 0x1d
285 #define PGM_PC_TRANSLATION_SPEC 0x1f
286 #define PGM_AFX_TRANSLATION 0x20
287 #define PGM_ASX_TRANSLATION 0x21
288 #define PGM_LX_TRANSLATION 0x22
289 #define PGM_EX_TRANSLATION 0x23
290 #define PGM_PRIMARY_AUTHORITY 0x24
291 #define PGM_SECONDARY_AUTHORITY 0x25
292 #define PGM_LFX_TRANSLATION 0x26
293 #define PGM_LSX_TRANSLATION 0x27
294 #define PGM_ALET_SPECIFICATION 0x28
295 #define PGM_ALEN_TRANSLATION 0x29
296 #define PGM_ALE_SEQUENCE 0x2a
297 #define PGM_ASTE_VALIDITY 0x2b
298 #define PGM_ASTE_SEQUENCE 0x2c
299 #define PGM_EXTENDED_AUTHORITY 0x2d
300 #define PGM_LSTE_SEQUENCE 0x2e
301 #define PGM_ASTE_INSTANCE 0x2f
302 #define PGM_STACK_FULL 0x30
303 #define PGM_STACK_EMPTY 0x31
304 #define PGM_STACK_SPECIFICATION 0x32
305 #define PGM_STACK_TYPE 0x33
306 #define PGM_STACK_OPERATION 0x34
307 #define PGM_ASCE_TYPE 0x38
308 #define PGM_REGION_FIRST_TRANS 0x39
309 #define PGM_REGION_SECOND_TRANS 0x3a
310 #define PGM_REGION_THIRD_TRANS 0x3b
311 #define PGM_MONITOR 0x40
313 #define PGM_CRYPTO_OPERATION 0x119
315 /* irq types in order of priority */
317 IRQ_PEND_MCHK_EX = 0,
321 IRQ_PEND_EXT_IRQ_KEY,
322 IRQ_PEND_EXT_MALFUNC,
323 IRQ_PEND_EXT_EMERGENCY,
324 IRQ_PEND_EXT_EXTERNAL,
325 IRQ_PEND_EXT_CLOCK_COMP,
326 IRQ_PEND_EXT_CPU_TIMER,
328 IRQ_PEND_EXT_SERVICE,
330 IRQ_PEND_PFAULT_INIT,
331 IRQ_PEND_PFAULT_DONE,
347 /* We have 2M for virtio device descriptor pages. Smallest amount of
348 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
350 #define KVM_S390_MAX_VIRTIO_IRQS 87381
353 * Repressible (non-floating) machine check interrupts
354 * subclass bits in MCIC
356 #define MCHK_EXTD_BIT 58
357 #define MCHK_DEGR_BIT 56
358 #define MCHK_WARN_BIT 55
359 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
360 (1UL << MCHK_EXTD_BIT) | \
361 (1UL << MCHK_WARN_BIT))
363 /* Exigent machine check interrupts subclass bits in MCIC */
364 #define MCHK_SD_BIT 63
365 #define MCHK_PD_BIT 62
366 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
368 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \
369 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
370 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \
371 (1UL << IRQ_PEND_EXT_MALFUNC) | \
372 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
373 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
374 (1UL << IRQ_PEND_EXT_TIMING) | \
375 (1UL << IRQ_PEND_EXT_HOST) | \
376 (1UL << IRQ_PEND_EXT_SERVICE) | \
377 (1UL << IRQ_PEND_VIRTIO) | \
378 (1UL << IRQ_PEND_PFAULT_INIT) | \
379 (1UL << IRQ_PEND_PFAULT_DONE))
381 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
382 (1UL << IRQ_PEND_IO_ISC_1) | \
383 (1UL << IRQ_PEND_IO_ISC_2) | \
384 (1UL << IRQ_PEND_IO_ISC_3) | \
385 (1UL << IRQ_PEND_IO_ISC_4) | \
386 (1UL << IRQ_PEND_IO_ISC_5) | \
387 (1UL << IRQ_PEND_IO_ISC_6) | \
388 (1UL << IRQ_PEND_IO_ISC_7))
390 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
391 (1UL << IRQ_PEND_MCHK_EX))
393 struct kvm_s390_interrupt_info {
394 struct list_head list;
397 struct kvm_s390_io_info io;
398 struct kvm_s390_ext_info ext;
399 struct kvm_s390_pgm_info pgm;
400 struct kvm_s390_emerg_info emerg;
401 struct kvm_s390_extcall_info extcall;
402 struct kvm_s390_prefix_info prefix;
403 struct kvm_s390_stop_info stop;
404 struct kvm_s390_mchk_info mchk;
408 struct kvm_s390_irq_payload {
409 struct kvm_s390_io_info io;
410 struct kvm_s390_ext_info ext;
411 struct kvm_s390_pgm_info pgm;
412 struct kvm_s390_emerg_info emerg;
413 struct kvm_s390_extcall_info extcall;
414 struct kvm_s390_prefix_info prefix;
415 struct kvm_s390_stop_info stop;
416 struct kvm_s390_mchk_info mchk;
419 struct kvm_s390_local_interrupt {
421 struct kvm_s390_float_interrupt *float_int;
422 struct swait_head *wq;
424 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
425 struct kvm_s390_irq_payload irq;
426 unsigned long pending_irqs;
429 #define FIRQ_LIST_IO_ISC_0 0
430 #define FIRQ_LIST_IO_ISC_1 1
431 #define FIRQ_LIST_IO_ISC_2 2
432 #define FIRQ_LIST_IO_ISC_3 3
433 #define FIRQ_LIST_IO_ISC_4 4
434 #define FIRQ_LIST_IO_ISC_5 5
435 #define FIRQ_LIST_IO_ISC_6 6
436 #define FIRQ_LIST_IO_ISC_7 7
437 #define FIRQ_LIST_PFAULT 8
438 #define FIRQ_LIST_VIRTIO 9
439 #define FIRQ_LIST_COUNT 10
440 #define FIRQ_CNTR_IO 0
441 #define FIRQ_CNTR_SERVICE 1
442 #define FIRQ_CNTR_VIRTIO 2
443 #define FIRQ_CNTR_PFAULT 3
444 #define FIRQ_MAX_COUNT 4
446 struct kvm_s390_float_interrupt {
447 unsigned long pending_irqs;
449 struct list_head lists[FIRQ_LIST_COUNT];
450 int counters[FIRQ_MAX_COUNT];
451 struct kvm_s390_mchk_info mchk;
452 struct kvm_s390_ext_info srv_signal;
454 unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
457 struct kvm_hw_wp_info_arch {
459 unsigned long phys_addr;
464 struct kvm_hw_bp_info_arch {
470 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
471 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
472 * arch/s390/include/uapi/asm/kvm.h
474 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
476 #define guestdbg_enabled(vcpu) \
477 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
478 #define guestdbg_sstep_enabled(vcpu) \
479 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
480 #define guestdbg_hw_bp_enabled(vcpu) \
481 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
482 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
483 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
485 struct kvm_guestdbg_info_arch {
490 struct kvm_hw_bp_info_arch *hw_bp_info;
491 struct kvm_hw_wp_info_arch *hw_wp_info;
494 unsigned long last_bp;
497 struct kvm_vcpu_arch {
498 struct kvm_s390_sie_block *sie_block;
499 s390_fp_regs host_fpregs;
500 unsigned int host_acrs[NUM_ACRS];
501 s390_fp_regs guest_fpregs;
502 struct kvm_s390_vregs *host_vregs;
503 struct kvm_s390_local_interrupt local_int;
504 struct hrtimer ckc_timer;
505 struct kvm_s390_pgm_info pgm;
511 struct kvm_guestdbg_info_arch guestdbg;
512 unsigned long pfault_token;
513 unsigned long pfault_select;
514 unsigned long pfault_compare;
518 u32 remote_tlb_flush;
521 struct kvm_arch_memory_slot {
524 struct s390_map_info {
525 struct list_head list;
531 struct s390_io_adapter {
537 struct rw_semaphore maps_lock;
538 struct list_head maps;
542 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
543 #define MAX_S390_ADAPTER_MAPS 256
545 /* maximum size of facilities and facility mask is 2k bytes */
546 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
547 #define S390_ARCH_FAC_LIST_SIZE_U64 \
548 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
549 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
550 #define S390_ARCH_FAC_MASK_SIZE_U64 \
551 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
553 struct kvm_s390_fac {
554 /* facility list requested by guest */
555 __u64 list[S390_ARCH_FAC_LIST_SIZE_U64];
556 /* facility mask supported by kvm & hosting machine */
557 __u64 mask[S390_ARCH_FAC_LIST_SIZE_U64];
560 struct kvm_s390_cpu_model {
561 struct kvm_s390_fac *fac;
566 struct kvm_s390_crypto {
567 struct kvm_s390_crypto_cb *crycb;
573 struct kvm_s390_crypto_cb {
574 __u8 reserved00[72]; /* 0x0000 */
575 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */
576 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */
577 __u8 reserved80[128]; /* 0x0080 */
581 struct sca_block *sca;
583 struct kvm_s390_float_interrupt float_int;
584 struct kvm_device *flic;
589 int user_cpu_state_ctrl;
592 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
593 wait_queue_head_t ipte_wq;
595 struct mutex ipte_mutex;
596 spinlock_t start_stop_lock;
597 struct kvm_s390_cpu_model model;
598 struct kvm_s390_crypto crypto;
602 #define KVM_HVA_ERR_BAD (-1UL)
603 #define KVM_HVA_ERR_RO_BAD (-2UL)
605 static inline bool kvm_is_error_hva(unsigned long addr)
607 return IS_ERR_VALUE(addr);
610 #define ASYNC_PF_PER_VCPU 64
611 struct kvm_arch_async_pf {
612 unsigned long pfault_token;
615 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
617 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
618 struct kvm_async_pf *work);
620 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
621 struct kvm_async_pf *work);
623 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
624 struct kvm_async_pf *work);
626 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
627 extern char sie_exit;
629 static inline void kvm_arch_hardware_disable(void) {}
630 static inline void kvm_arch_check_processor_compat(void *rtn) {}
631 static inline void kvm_arch_exit(void) {}
632 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
633 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
634 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
635 static inline void kvm_arch_free_memslot(struct kvm *kvm,
636 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
637 static inline void kvm_arch_memslots_updated(struct kvm *kvm) {}
638 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
639 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
640 struct kvm_memory_slot *slot) {}