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 <cotte@de.ibm.com>
  8 */
  9
 10
 11#ifndef ASM_KVM_HOST_H
 12#define ASM_KVM_HOST_H
 13
 14#include <linux/types.h>
 15#include <linux/hrtimer.h>
 16#include <linux/interrupt.h>
 17#include <linux/kvm_types.h>
 18#include <linux/kvm.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/kvm_host_types.h>
 24#include <asm/debug.h>
 25#include <asm/cpu.h>
 26#include <asm/fpu.h>
 27#include <asm/isc.h>
 28#include <asm/guarded_storage.h>
 29
 30#define KVM_MAX_VCPUS 255
 31
 32#define KVM_INTERNAL_MEM_SLOTS 1
 33
 34/*
 35 * These seem to be used for allocating ->chip in the routing table, which we
 36 * don't use. 1 is as small as we can get to reduce the needed memory. If we
 37 * need to look at ->chip later on, we'll need to revisit this.
 38 */
 39#define KVM_NR_IRQCHIPS 1
 40#define KVM_IRQCHIP_NUM_PINS 1
 41#define KVM_HALT_POLL_NS_DEFAULT 50000
 42
 43/* s390-specific vcpu->requests bit members */
 44#define KVM_REQ_ENABLE_IBS	KVM_ARCH_REQ(0)
 45#define KVM_REQ_DISABLE_IBS	KVM_ARCH_REQ(1)
 46#define KVM_REQ_ICPT_OPEREXC	KVM_ARCH_REQ(2)
 47#define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
 48#define KVM_REQ_STOP_MIGRATION  KVM_ARCH_REQ(4)
 49#define KVM_REQ_VSIE_RESTART	KVM_ARCH_REQ(5)
 50#define KVM_REQ_REFRESH_GUEST_PREFIX	\
 51	KVM_ARCH_REQ_FLAGS(6, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
 52
 53struct kvm_vcpu_stat {
 54	struct kvm_vcpu_stat_generic generic;
 55	u64 exit_userspace;
 56	u64 exit_null;
 57	u64 exit_external_request;
 58	u64 exit_io_request;
 59	u64 exit_external_interrupt;
 60	u64 exit_stop_request;
 61	u64 exit_validity;
 62	u64 exit_instruction;
 63	u64 exit_pei;
 64	u64 halt_no_poll_steal;
 65	u64 instruction_lctl;
 66	u64 instruction_lctlg;
 67	u64 instruction_stctl;
 68	u64 instruction_stctg;
 69	u64 exit_program_interruption;
 70	u64 exit_instr_and_program;
 71	u64 exit_operation_exception;
 72	u64 deliver_ckc;
 73	u64 deliver_cputm;
 74	u64 deliver_external_call;
 75	u64 deliver_emergency_signal;
 76	u64 deliver_service_signal;
 77	u64 deliver_virtio;
 78	u64 deliver_stop_signal;
 79	u64 deliver_prefix_signal;
 80	u64 deliver_restart_signal;
 81	u64 deliver_program;
 82	u64 deliver_io;
 83	u64 deliver_machine_check;
 84	u64 exit_wait_state;
 85	u64 inject_ckc;
 86	u64 inject_cputm;
 87	u64 inject_external_call;
 88	u64 inject_emergency_signal;
 89	u64 inject_mchk;
 90	u64 inject_pfault_init;
 91	u64 inject_program;
 92	u64 inject_restart;
 93	u64 inject_set_prefix;
 94	u64 inject_stop_signal;
 95	u64 instruction_epsw;
 96	u64 instruction_gs;
 97	u64 instruction_io_other;
 98	u64 instruction_lpsw;
 99	u64 instruction_lpswe;
100	u64 instruction_lpswey;
101	u64 instruction_pfmf;
102	u64 instruction_ptff;
103	u64 instruction_sck;
104	u64 instruction_sckpf;
105	u64 instruction_stidp;
106	u64 instruction_spx;
107	u64 instruction_stpx;
108	u64 instruction_stap;
109	u64 instruction_iske;
110	u64 instruction_ri;
111	u64 instruction_rrbe;
112	u64 instruction_sske;
113	u64 instruction_ipte_interlock;
114	u64 instruction_stsi;
115	u64 instruction_stfl;
116	u64 instruction_tb;
117	u64 instruction_tpi;
118	u64 instruction_tprot;
119	u64 instruction_tsch;
120	u64 instruction_sie;
121	u64 instruction_essa;
122	u64 instruction_sthyi;
123	u64 instruction_sigp_sense;
124	u64 instruction_sigp_sense_running;
125	u64 instruction_sigp_external_call;
126	u64 instruction_sigp_emergency;
127	u64 instruction_sigp_cond_emergency;
128	u64 instruction_sigp_start;
129	u64 instruction_sigp_stop;
130	u64 instruction_sigp_stop_store_status;
131	u64 instruction_sigp_store_status;
132	u64 instruction_sigp_store_adtl_status;
133	u64 instruction_sigp_arch;
134	u64 instruction_sigp_prefix;
135	u64 instruction_sigp_restart;
136	u64 instruction_sigp_init_cpu_reset;
137	u64 instruction_sigp_cpu_reset;
138	u64 instruction_sigp_unknown;
139	u64 instruction_diagnose_10;
140	u64 instruction_diagnose_44;
141	u64 instruction_diagnose_9c;
142	u64 diag_9c_ignored;
143	u64 diag_9c_forward;
144	u64 instruction_diagnose_258;
145	u64 instruction_diagnose_308;
146	u64 instruction_diagnose_500;
147	u64 instruction_diagnose_other;
148	u64 pfault_sync;
149	u64 signal_exits;
150};
151
152#define PGM_OPERATION			0x01
153#define PGM_PRIVILEGED_OP		0x02
154#define PGM_EXECUTE			0x03
155#define PGM_PROTECTION			0x04
156#define PGM_ADDRESSING			0x05
157#define PGM_SPECIFICATION		0x06
158#define PGM_DATA			0x07
159#define PGM_FIXED_POINT_OVERFLOW	0x08
160#define PGM_FIXED_POINT_DIVIDE		0x09
161#define PGM_DECIMAL_OVERFLOW		0x0a
162#define PGM_DECIMAL_DIVIDE		0x0b
163#define PGM_HFP_EXPONENT_OVERFLOW	0x0c
164#define PGM_HFP_EXPONENT_UNDERFLOW	0x0d
165#define PGM_HFP_SIGNIFICANCE		0x0e
166#define PGM_HFP_DIVIDE			0x0f
167#define PGM_SEGMENT_TRANSLATION		0x10
168#define PGM_PAGE_TRANSLATION		0x11
169#define PGM_TRANSLATION_SPEC		0x12
170#define PGM_SPECIAL_OPERATION		0x13
171#define PGM_OPERAND			0x15
172#define PGM_TRACE_TABEL			0x16
173#define PGM_VECTOR_PROCESSING		0x1b
174#define PGM_SPACE_SWITCH		0x1c
175#define PGM_HFP_SQUARE_ROOT		0x1d
176#define PGM_PC_TRANSLATION_SPEC		0x1f
177#define PGM_AFX_TRANSLATION		0x20
178#define PGM_ASX_TRANSLATION		0x21
179#define PGM_LX_TRANSLATION		0x22
180#define PGM_EX_TRANSLATION		0x23
181#define PGM_PRIMARY_AUTHORITY		0x24
182#define PGM_SECONDARY_AUTHORITY		0x25
183#define PGM_LFX_TRANSLATION		0x26
184#define PGM_LSX_TRANSLATION		0x27
185#define PGM_ALET_SPECIFICATION		0x28
186#define PGM_ALEN_TRANSLATION		0x29
187#define PGM_ALE_SEQUENCE		0x2a
188#define PGM_ASTE_VALIDITY		0x2b
189#define PGM_ASTE_SEQUENCE		0x2c
190#define PGM_EXTENDED_AUTHORITY		0x2d
191#define PGM_LSTE_SEQUENCE		0x2e
192#define PGM_ASTE_INSTANCE		0x2f
193#define PGM_STACK_FULL			0x30
194#define PGM_STACK_EMPTY			0x31
195#define PGM_STACK_SPECIFICATION		0x32
196#define PGM_STACK_TYPE			0x33
197#define PGM_STACK_OPERATION		0x34
198#define PGM_ASCE_TYPE			0x38
199#define PGM_REGION_FIRST_TRANS		0x39
200#define PGM_REGION_SECOND_TRANS		0x3a
201#define PGM_REGION_THIRD_TRANS		0x3b
202#define PGM_SECURE_STORAGE_ACCESS	0x3d
203#define PGM_NON_SECURE_STORAGE_ACCESS	0x3e
204#define PGM_SECURE_STORAGE_VIOLATION	0x3f
205#define PGM_MONITOR			0x40
206#define PGM_PER				0x80
207#define PGM_CRYPTO_OPERATION		0x119
208
209/* irq types in ascend order of priorities */
210enum irq_types {
211	IRQ_PEND_SET_PREFIX = 0,
212	IRQ_PEND_RESTART,
213	IRQ_PEND_SIGP_STOP,
214	IRQ_PEND_IO_ISC_7,
215	IRQ_PEND_IO_ISC_6,
216	IRQ_PEND_IO_ISC_5,
217	IRQ_PEND_IO_ISC_4,
218	IRQ_PEND_IO_ISC_3,
219	IRQ_PEND_IO_ISC_2,
220	IRQ_PEND_IO_ISC_1,
221	IRQ_PEND_IO_ISC_0,
222	IRQ_PEND_VIRTIO,
223	IRQ_PEND_PFAULT_DONE,
224	IRQ_PEND_PFAULT_INIT,
225	IRQ_PEND_EXT_HOST,
226	IRQ_PEND_EXT_SERVICE,
227	IRQ_PEND_EXT_SERVICE_EV,
228	IRQ_PEND_EXT_TIMING,
229	IRQ_PEND_EXT_CPU_TIMER,
230	IRQ_PEND_EXT_CLOCK_COMP,
231	IRQ_PEND_EXT_EXTERNAL,
232	IRQ_PEND_EXT_EMERGENCY,
233	IRQ_PEND_EXT_MALFUNC,
234	IRQ_PEND_EXT_IRQ_KEY,
235	IRQ_PEND_MCHK_REP,
236	IRQ_PEND_PROG,
237	IRQ_PEND_SVC,
238	IRQ_PEND_MCHK_EX,
239	IRQ_PEND_COUNT
240};
241
242/* We have 2M for virtio device descriptor pages. Smallest amount of
243 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
244 */
245#define KVM_S390_MAX_VIRTIO_IRQS 87381
246
247/*
248 * Repressible (non-floating) machine check interrupts
249 * subclass bits in MCIC
250 */
251#define MCHK_EXTD_BIT 58
252#define MCHK_DEGR_BIT 56
253#define MCHK_WARN_BIT 55
254#define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
255		       (1UL << MCHK_EXTD_BIT) | \
256		       (1UL << MCHK_WARN_BIT))
257
258/* Exigent machine check interrupts subclass bits in MCIC */
259#define MCHK_SD_BIT 63
260#define MCHK_PD_BIT 62
261#define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
262
263#define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
264			   (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
265			   (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
266			   (1UL << IRQ_PEND_EXT_MALFUNC)    | \
267			   (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
268			   (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
269			   (1UL << IRQ_PEND_EXT_TIMING)     | \
270			   (1UL << IRQ_PEND_EXT_HOST)       | \
271			   (1UL << IRQ_PEND_EXT_SERVICE)    | \
272			   (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
273			   (1UL << IRQ_PEND_VIRTIO)         | \
274			   (1UL << IRQ_PEND_PFAULT_INIT)    | \
275			   (1UL << IRQ_PEND_PFAULT_DONE))
276
277#define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
278			  (1UL << IRQ_PEND_IO_ISC_1) | \
279			  (1UL << IRQ_PEND_IO_ISC_2) | \
280			  (1UL << IRQ_PEND_IO_ISC_3) | \
281			  (1UL << IRQ_PEND_IO_ISC_4) | \
282			  (1UL << IRQ_PEND_IO_ISC_5) | \
283			  (1UL << IRQ_PEND_IO_ISC_6) | \
284			  (1UL << IRQ_PEND_IO_ISC_7))
285
286#define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
287			    (1UL << IRQ_PEND_MCHK_EX))
288
289#define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
290			      (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
291			      (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
292			      (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
293			      (1UL << IRQ_PEND_EXT_SERVICE)    | \
294			      (1UL << IRQ_PEND_EXT_SERVICE_EV))
295
296struct kvm_s390_interrupt_info {
297	struct list_head list;
298	u64	type;
299	union {
300		struct kvm_s390_io_info io;
301		struct kvm_s390_ext_info ext;
302		struct kvm_s390_pgm_info pgm;
303		struct kvm_s390_emerg_info emerg;
304		struct kvm_s390_extcall_info extcall;
305		struct kvm_s390_prefix_info prefix;
306		struct kvm_s390_stop_info stop;
307		struct kvm_s390_mchk_info mchk;
308	};
309};
310
311struct kvm_s390_irq_payload {
312	struct kvm_s390_io_info io;
313	struct kvm_s390_ext_info ext;
314	struct kvm_s390_pgm_info pgm;
315	struct kvm_s390_emerg_info emerg;
316	struct kvm_s390_extcall_info extcall;
317	struct kvm_s390_prefix_info prefix;
318	struct kvm_s390_stop_info stop;
319	struct kvm_s390_mchk_info mchk;
320};
321
322struct kvm_s390_local_interrupt {
323	spinlock_t lock;
324	DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
325	struct kvm_s390_irq_payload irq;
326	unsigned long pending_irqs;
327};
328
329#define FIRQ_LIST_IO_ISC_0 0
330#define FIRQ_LIST_IO_ISC_1 1
331#define FIRQ_LIST_IO_ISC_2 2
332#define FIRQ_LIST_IO_ISC_3 3
333#define FIRQ_LIST_IO_ISC_4 4
334#define FIRQ_LIST_IO_ISC_5 5
335#define FIRQ_LIST_IO_ISC_6 6
336#define FIRQ_LIST_IO_ISC_7 7
337#define FIRQ_LIST_PFAULT   8
338#define FIRQ_LIST_VIRTIO   9
339#define FIRQ_LIST_COUNT   10
340#define FIRQ_CNTR_IO       0
341#define FIRQ_CNTR_SERVICE  1
342#define FIRQ_CNTR_VIRTIO   2
343#define FIRQ_CNTR_PFAULT   3
344#define FIRQ_MAX_COUNT     4
345
346/* mask the AIS mode for a given ISC */
347#define AIS_MODE_MASK(isc) (0x80 >> isc)
348
349#define KVM_S390_AIS_MODE_ALL    0
350#define KVM_S390_AIS_MODE_SINGLE 1
351
352struct kvm_s390_float_interrupt {
353	unsigned long pending_irqs;
354	unsigned long masked_irqs;
355	spinlock_t lock;
356	struct list_head lists[FIRQ_LIST_COUNT];
357	int counters[FIRQ_MAX_COUNT];
358	struct kvm_s390_mchk_info mchk;
359	struct kvm_s390_ext_info srv_signal;
360	int last_sleep_cpu;
361	struct mutex ais_lock;
362	u8 simm;
363	u8 nimm;
364};
365
366struct kvm_hw_wp_info_arch {
367	unsigned long addr;
368	unsigned long phys_addr;
369	int len;
370	char *old_data;
371};
372
373struct kvm_hw_bp_info_arch {
374	unsigned long addr;
375	int len;
376};
377
378/*
379 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
380 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
381 * arch/s390/include/uapi/asm/kvm.h
382 */
383#define KVM_GUESTDBG_EXIT_PENDING 0x10000000
384
385#define guestdbg_enabled(vcpu) \
386		(vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
387#define guestdbg_sstep_enabled(vcpu) \
388		(vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
389#define guestdbg_hw_bp_enabled(vcpu) \
390		(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
391#define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
392		(vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
393
394#define KVM_GUESTDBG_VALID_MASK \
395		(KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\
396		KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING)
397
398struct kvm_guestdbg_info_arch {
399	unsigned long cr0;
400	unsigned long cr9;
401	unsigned long cr10;
402	unsigned long cr11;
403	struct kvm_hw_bp_info_arch *hw_bp_info;
404	struct kvm_hw_wp_info_arch *hw_wp_info;
405	int nr_hw_bp;
406	int nr_hw_wp;
407	unsigned long last_bp;
408};
409
410struct kvm_s390_pv_vcpu {
411	u64 handle;
412	unsigned long stor_base;
413};
414
415struct kvm_vcpu_arch {
416	struct kvm_s390_sie_block *sie_block;
417	/* if vsie is active, currently executed shadow sie control block */
418	struct kvm_s390_sie_block *vsie_block;
419	unsigned int      host_acrs[NUM_ACRS];
420	struct gs_cb      *host_gscb;
421	struct kvm_s390_local_interrupt local_int;
422	struct hrtimer    ckc_timer;
423	struct kvm_s390_pgm_info pgm;
424	struct gmap *gmap;
425	struct kvm_guestdbg_info_arch guestdbg;
426	unsigned long pfault_token;
427	unsigned long pfault_select;
428	unsigned long pfault_compare;
429	bool cputm_enabled;
430	/*
431	 * The seqcount protects updates to cputm_start and sie_block.cputm,
432	 * this way we can have non-blocking reads with consistent values.
433	 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
434	 * values and to start/stop/enable/disable cpu timer accounting.
435	 */
436	seqcount_t cputm_seqcount;
437	__u64 cputm_start;
438	bool gs_enabled;
439	bool skey_enabled;
440	/* Indicator if the access registers have been loaded from guest */
441	bool acrs_loaded;
442	struct kvm_s390_pv_vcpu pv;
443	union diag318_info diag318_info;
444};
445
446struct kvm_vm_stat {
447	struct kvm_vm_stat_generic generic;
448	u64 inject_io;
449	u64 inject_float_mchk;
450	u64 inject_pfault_done;
451	u64 inject_service_signal;
452	u64 inject_virtio;
453	u64 aen_forward;
454	u64 gmap_shadow_create;
455	u64 gmap_shadow_reuse;
456	u64 gmap_shadow_r1_entry;
457	u64 gmap_shadow_r2_entry;
458	u64 gmap_shadow_r3_entry;
459	u64 gmap_shadow_sg_entry;
460	u64 gmap_shadow_pg_entry;
461};
462
463struct kvm_arch_memory_slot {
464};
465
466struct s390_map_info {
467	struct list_head list;
468	__u64 guest_addr;
469	__u64 addr;
470	struct page *page;
471};
472
473struct s390_io_adapter {
474	unsigned int id;
475	int isc;
476	bool maskable;
477	bool masked;
478	bool swap;
479	bool suppressible;
480};
481
482#define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
483#define MAX_S390_ADAPTER_MAPS 256
484
485/* maximum size of facilities and facility mask is 2k bytes */
486#define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
487#define S390_ARCH_FAC_LIST_SIZE_U64 \
488	(S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
489#define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
490#define S390_ARCH_FAC_MASK_SIZE_U64 \
491	(S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
492
493struct kvm_s390_cpu_model {
494	/* facility mask supported by kvm & hosting machine */
495	__u64 fac_mask[S390_ARCH_FAC_MASK_SIZE_U64];
496	struct kvm_s390_vm_cpu_subfunc subfuncs;
497	/* facility list requested by guest (in dma page) */
498	__u64 *fac_list;
499	u64 cpuid;
500	unsigned short ibc;
501	/* subset of available UV-features for pv-guests enabled by user space */
502	struct kvm_s390_vm_cpu_uv_feat uv_feat_guest;
503};
504
505typedef int (*crypto_hook)(struct kvm_vcpu *vcpu);
506
507struct kvm_s390_crypto {
508	struct kvm_s390_crypto_cb *crycb;
509	struct rw_semaphore pqap_hook_rwsem;
510	crypto_hook *pqap_hook;
511	__u32 crycbd;
512	__u8 aes_kw;
513	__u8 dea_kw;
514	__u8 apie;
515};
516
517#define APCB0_MASK_SIZE 1
518struct kvm_s390_apcb0 {
519	__u64 apm[APCB0_MASK_SIZE];		/* 0x0000 */
520	__u64 aqm[APCB0_MASK_SIZE];		/* 0x0008 */
521	__u64 adm[APCB0_MASK_SIZE];		/* 0x0010 */
522	__u64 reserved18;			/* 0x0018 */
523};
524
525#define APCB1_MASK_SIZE 4
526struct kvm_s390_apcb1 {
527	__u64 apm[APCB1_MASK_SIZE];		/* 0x0000 */
528	__u64 aqm[APCB1_MASK_SIZE];		/* 0x0020 */
529	__u64 adm[APCB1_MASK_SIZE];		/* 0x0040 */
530	__u64 reserved60[4];			/* 0x0060 */
531};
532
533struct kvm_s390_crypto_cb {
534	struct kvm_s390_apcb0 apcb0;		/* 0x0000 */
535	__u8   reserved20[0x0048 - 0x0020];	/* 0x0020 */
536	__u8   dea_wrapping_key_mask[24];	/* 0x0048 */
537	__u8   aes_wrapping_key_mask[32];	/* 0x0060 */
538	struct kvm_s390_apcb1 apcb1;		/* 0x0080 */
539};
540
541struct kvm_s390_gisa {
542	union {
543		struct { /* common to all formats */
544			u32 next_alert;
545			u8  ipm;
546			u8  reserved01[2];
547			u8  iam;
548		};
549		struct { /* format 0 */
550			u32 next_alert;
551			u8  ipm;
552			u8  reserved01;
553			u8  : 6;
554			u8  g : 1;
555			u8  c : 1;
556			u8  iam;
557			u8  reserved02[4];
558			u32 airq_count;
559		} g0;
560		struct { /* format 1 */
561			u32 next_alert;
562			u8  ipm;
563			u8  simm;
564			u8  nimm;
565			u8  iam;
566			u8  aism[8];
567			u8  : 6;
568			u8  g : 1;
569			u8  c : 1;
570			u8  reserved03[11];
571			u32 airq_count;
572		} g1;
573		struct {
574			u64 word[4];
575		} u64;
576	};
577};
578
579struct kvm_s390_gib {
580	u32 alert_list_origin;
581	u32 reserved01;
582	u8:5;
583	u8  nisc:3;
584	u8  reserved03[3];
585	u32 reserved04[5];
586};
587
588/*
589 * sie_page2 has to be allocated as DMA because fac_list, crycb and
590 * gisa need 31bit addresses in the sie control block.
591 */
592struct sie_page2 {
593	__u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];	/* 0x0000 */
594	struct kvm_s390_crypto_cb crycb;		/* 0x0800 */
595	struct kvm_s390_gisa gisa;			/* 0x0900 */
596	struct kvm *kvm;				/* 0x0920 */
597	u8 reserved928[0x1000 - 0x928];			/* 0x0928 */
598};
599
600struct vsie_page;
601
602struct kvm_s390_vsie {
603	struct mutex mutex;
604	struct radix_tree_root addr_to_page;
605	int page_count;
606	int next;
607	struct vsie_page *pages[KVM_MAX_VCPUS];
608};
609
610struct kvm_s390_gisa_iam {
611	u8 mask;
612	spinlock_t ref_lock;
613	u32 ref_count[MAX_ISC + 1];
614};
615
616struct kvm_s390_gisa_interrupt {
617	struct kvm_s390_gisa *origin;
618	struct kvm_s390_gisa_iam alert;
619	struct hrtimer timer;
620	u64 expires;
621	DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
622};
623
624struct kvm_s390_pv {
625	u64 handle;
626	u64 guest_len;
627	unsigned long stor_base;
628	void *stor_var;
629	bool dumping;
630	void *set_aside;
631	struct list_head need_cleanup;
632	struct mmu_notifier mmu_notifier;
633};
634
635struct kvm_arch {
636	struct esca_block *sca;
637	debug_info_t *dbf;
638	struct kvm_s390_float_interrupt float_int;
639	struct kvm_device *flic;
640	struct gmap *gmap;
641	unsigned long mem_limit;
642	int css_support;
643	int use_irqchip;
644	int use_cmma;
645	int use_pfmfi;
646	int use_skf;
647	int use_zpci_interp;
648	int user_cpu_state_ctrl;
649	int user_sigp;
650	int user_stsi;
651	int user_instr0;
652	int user_operexec;
653	struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
654	wait_queue_head_t ipte_wq;
655	int ipte_lock_count;
656	struct mutex ipte_mutex;
657	spinlock_t start_stop_lock;
658	struct sie_page2 *sie_page2;
659	struct kvm_s390_cpu_model model;
660	struct kvm_s390_crypto crypto;
661	struct kvm_s390_vsie vsie;
662	u8 epdx;
663	u64 epoch;
664	int migration_mode;
665	atomic64_t cmma_dirty_pages;
666	/* subset of available cpu features enabled by user space */
667	DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
668	/* indexed by vcpu_idx */
669	DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
670	struct kvm_s390_gisa_interrupt gisa_int;
671	struct kvm_s390_pv pv;
672	struct list_head kzdev_list;
673	spinlock_t kzdev_list_lock;
674};
675
676#define KVM_HVA_ERR_BAD		(-1UL)
677#define KVM_HVA_ERR_RO_BAD	(-2UL)
678
679static inline bool kvm_is_error_hva(unsigned long addr)
680{
681	return IS_ERR_VALUE(addr);
682}
683
684#define ASYNC_PF_PER_VCPU	64
685struct kvm_arch_async_pf {
686	unsigned long pfault_token;
687};
688
689bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
690
691void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
692			       struct kvm_async_pf *work);
693
694bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
695				     struct kvm_async_pf *work);
696
697void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
698				 struct kvm_async_pf *work);
699
700static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
701
702void kvm_arch_crypto_clear_masks(struct kvm *kvm);
703void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
704			       unsigned long *aqm, unsigned long *adm);
705
706int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa,
707	     unsigned long gasce);
708
709static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa, unsigned long gasce)
710{
711	return __sie64a(virt_to_phys(sie_block), sie_block, rsa, gasce);
712}
713
714extern char sie_exit;
715
716bool kvm_s390_pv_is_protected(struct kvm *kvm);
717bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu);
718
719extern int kvm_s390_enter_exit_sie(struct kvm_s390_sie_block *scb,
720				   u64 *gprs, unsigned long gasce);
721
722extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
723extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
724
725bool kvm_s390_is_gpa_in_memslot(struct kvm *kvm, gpa_t gpa);
726
727static inline void kvm_arch_free_memslot(struct kvm *kvm,
728					 struct kvm_memory_slot *slot) {}
729static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
730static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
731static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
732		struct kvm_memory_slot *slot) {}
733static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
734static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
735
736#define __KVM_HAVE_ARCH_VM_FREE
737void kvm_arch_free_vm(struct kvm *kvm);
738
739struct zpci_kvm_hook {
740	int (*kvm_register)(void *opaque, struct kvm *kvm);
741	void (*kvm_unregister)(void *opaque);
742};
743
744extern struct zpci_kvm_hook zpci_kvm_hook;
745
746#endif