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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/fpu/api.h>
26 #include <asm/isc.h>
27 
28 #define KVM_MAX_VCPUS 64
29 #define KVM_USER_MEM_SLOTS 32
30 
31 /*
32  * These seem to be used for allocating ->chip in the routing table, which we
33  * don't use. 1 is as small as we can get to reduce the needed memory. If we
34  * need to look at ->chip later on, we'll need to revisit this.
35  */
36 #define KVM_NR_IRQCHIPS 1
37 #define KVM_IRQCHIP_NUM_PINS 1
38 #define KVM_HALT_POLL_NS_DEFAULT 0
39 
40 #define SIGP_CTRL_C		0x80
41 #define SIGP_CTRL_SCN_MASK	0x3f
42 
43 struct sca_entry {
44 	__u8	reserved0;
45 	__u8	sigp_ctrl;
46 	__u16	reserved[3];
47 	__u64	sda;
48 	__u64	reserved2[2];
49 } __attribute__((packed));
50 
51 union ipte_control {
52 	unsigned long val;
53 	struct {
54 		unsigned long k  : 1;
55 		unsigned long kh : 31;
56 		unsigned long kg : 32;
57 	};
58 };
59 
60 struct sca_block {
61 	union ipte_control ipte_control;
62 	__u64	reserved[5];
63 	__u64	mcn;
64 	__u64	reserved2;
65 	struct sca_entry cpu[64];
66 } __attribute__((packed));
67 
68 #define CPUSTAT_STOPPED    0x80000000
69 #define CPUSTAT_WAIT       0x10000000
70 #define CPUSTAT_ECALL_PEND 0x08000000
71 #define CPUSTAT_STOP_INT   0x04000000
72 #define CPUSTAT_IO_INT     0x02000000
73 #define CPUSTAT_EXT_INT    0x01000000
74 #define CPUSTAT_RUNNING    0x00800000
75 #define CPUSTAT_RETAINED   0x00400000
76 #define CPUSTAT_TIMING_SUB 0x00020000
77 #define CPUSTAT_SIE_SUB    0x00010000
78 #define CPUSTAT_RRF        0x00008000
79 #define CPUSTAT_SLSV       0x00004000
80 #define CPUSTAT_SLSR       0x00002000
81 #define CPUSTAT_ZARCH      0x00000800
82 #define CPUSTAT_MCDS       0x00000100
83 #define CPUSTAT_SM         0x00000080
84 #define CPUSTAT_IBS        0x00000040
85 #define CPUSTAT_GED2       0x00000010
86 #define CPUSTAT_G          0x00000008
87 #define CPUSTAT_GED        0x00000004
88 #define CPUSTAT_J          0x00000002
89 #define CPUSTAT_P          0x00000001
90 
91 struct kvm_s390_sie_block {
92 	atomic_t cpuflags;		/* 0x0000 */
93 	__u32 : 1;			/* 0x0004 */
94 	__u32 prefix : 18;
95 	__u32 : 1;
96 	__u32 ibc : 12;
97 	__u8	reserved08[4];		/* 0x0008 */
98 #define PROG_IN_SIE (1<<0)
99 	__u32	prog0c;			/* 0x000c */
100 	__u8	reserved10[16];		/* 0x0010 */
101 #define PROG_BLOCK_SIE	(1<<0)
102 #define PROG_REQUEST	(1<<1)
103 	atomic_t prog20;		/* 0x0020 */
104 	__u8	reserved24[4];		/* 0x0024 */
105 	__u64	cputm;			/* 0x0028 */
106 	__u64	ckc;			/* 0x0030 */
107 	__u64	epoch;			/* 0x0038 */
108 	__u8	reserved40[4];		/* 0x0040 */
109 #define LCTL_CR0	0x8000
110 #define LCTL_CR6	0x0200
111 #define LCTL_CR9	0x0040
112 #define LCTL_CR10	0x0020
113 #define LCTL_CR11	0x0010
114 #define LCTL_CR14	0x0002
115 	__u16   lctl;			/* 0x0044 */
116 	__s16	icpua;			/* 0x0046 */
117 #define ICTL_PINT	0x20000000
118 #define ICTL_LPSW	0x00400000
119 #define ICTL_STCTL	0x00040000
120 #define ICTL_ISKE	0x00004000
121 #define ICTL_SSKE	0x00002000
122 #define ICTL_RRBE	0x00001000
123 #define ICTL_TPROT	0x00000200
124 	__u32	ictl;			/* 0x0048 */
125 	__u32	eca;			/* 0x004c */
126 #define ICPT_INST	0x04
127 #define ICPT_PROGI	0x08
128 #define ICPT_INSTPROGI	0x0C
129 #define ICPT_OPEREXC	0x2C
130 #define ICPT_PARTEXEC	0x38
131 #define ICPT_IOINST	0x40
132 	__u8	icptcode;		/* 0x0050 */
133 	__u8	icptstatus;		/* 0x0051 */
134 	__u16	ihcpu;			/* 0x0052 */
135 	__u8	reserved54[2];		/* 0x0054 */
136 	__u16	ipa;			/* 0x0056 */
137 	__u32	ipb;			/* 0x0058 */
138 	__u32	scaoh;			/* 0x005c */
139 #define FPF_BPBC 	0x20
140 	__u8	fpf;			/* 0x0060 */
141 	__u8	ecb;			/* 0x0061 */
142 	__u8    ecb2;                   /* 0x0062 */
143 #define ECB3_AES 0x04
144 #define ECB3_DEA 0x08
145 	__u8    ecb3;			/* 0x0063 */
146 	__u32	scaol;			/* 0x0064 */
147 	__u8	reserved68[4];		/* 0x0068 */
148 	__u32	todpr;			/* 0x006c */
149 	__u8	reserved70[32];		/* 0x0070 */
150 	psw_t	gpsw;			/* 0x0090 */
151 	__u64	gg14;			/* 0x00a0 */
152 	__u64	gg15;			/* 0x00a8 */
153 	__u8	reservedb0[20];		/* 0x00b0 */
154 	__u16	extcpuaddr;		/* 0x00c4 */
155 	__u16	eic;			/* 0x00c6 */
156 	__u32	reservedc8;		/* 0x00c8 */
157 	__u16	pgmilc;			/* 0x00cc */
158 	__u16	iprcc;			/* 0x00ce */
159 	__u32	dxc;			/* 0x00d0 */
160 	__u16	mcn;			/* 0x00d4 */
161 	__u8	perc;			/* 0x00d6 */
162 	__u8	peratmid;		/* 0x00d7 */
163 	__u64	peraddr;		/* 0x00d8 */
164 	__u8	eai;			/* 0x00e0 */
165 	__u8	peraid;			/* 0x00e1 */
166 	__u8	oai;			/* 0x00e2 */
167 	__u8	armid;			/* 0x00e3 */
168 	__u8	reservede4[4];		/* 0x00e4 */
169 	__u64	tecmc;			/* 0x00e8 */
170 	__u8	reservedf0[12];		/* 0x00f0 */
171 #define CRYCB_FORMAT1 0x00000001
172 #define CRYCB_FORMAT2 0x00000003
173 	__u32	crycbd;			/* 0x00fc */
174 	__u64	gcr[16];		/* 0x0100 */
175 	__u64	gbea;			/* 0x0180 */
176 	__u8	reserved188[24];	/* 0x0188 */
177 	__u32	fac;			/* 0x01a0 */
178 	__u8	reserved1a4[20];	/* 0x01a4 */
179 	__u64	cbrlo;			/* 0x01b8 */
180 	__u8	reserved1c0[8];		/* 0x01c0 */
181 	__u32	ecd;			/* 0x01c8 */
182 	__u8	reserved1cc[18];	/* 0x01cc */
183 	__u64	pp;			/* 0x01de */
184 	__u8	reserved1e6[2];		/* 0x01e6 */
185 	__u64	itdba;			/* 0x01e8 */
186 	__u8	reserved1f0[16];	/* 0x01f0 */
187 } __attribute__((packed));
188 
189 struct kvm_s390_itdb {
190 	__u8	data[256];
191 } __packed;
192 
193 struct kvm_s390_vregs {
194 	__vector128 vrs[32];
195 	__u8	reserved200[512];	/* for future vector expansion */
196 } __packed;
197 
198 struct sie_page {
199 	struct kvm_s390_sie_block sie_block;
200 	__u8 reserved200[1024];		/* 0x0200 */
201 	struct kvm_s390_itdb itdb;	/* 0x0600 */
202 	__u8 reserved700[1280];		/* 0x0700 */
203 	struct kvm_s390_vregs vregs;	/* 0x0c00 */
204 } __packed;
205 
206 struct kvm_vcpu_stat {
207 	u32 exit_userspace;
208 	u32 exit_null;
209 	u32 exit_external_request;
210 	u32 exit_external_interrupt;
211 	u32 exit_stop_request;
212 	u32 exit_validity;
213 	u32 exit_instruction;
214 	u32 halt_successful_poll;
215 	u32 halt_attempted_poll;
216 	u32 halt_wakeup;
217 	u32 instruction_lctl;
218 	u32 instruction_lctlg;
219 	u32 instruction_stctl;
220 	u32 instruction_stctg;
221 	u32 exit_program_interruption;
222 	u32 exit_instr_and_program;
223 	u32 deliver_external_call;
224 	u32 deliver_emergency_signal;
225 	u32 deliver_service_signal;
226 	u32 deliver_virtio_interrupt;
227 	u32 deliver_stop_signal;
228 	u32 deliver_prefix_signal;
229 	u32 deliver_restart_signal;
230 	u32 deliver_program_int;
231 	u32 deliver_io_int;
232 	u32 exit_wait_state;
233 	u32 instruction_pfmf;
234 	u32 instruction_stidp;
235 	u32 instruction_spx;
236 	u32 instruction_stpx;
237 	u32 instruction_stap;
238 	u32 instruction_storage_key;
239 	u32 instruction_ipte_interlock;
240 	u32 instruction_stsch;
241 	u32 instruction_chsc;
242 	u32 instruction_stsi;
243 	u32 instruction_stfl;
244 	u32 instruction_tprot;
245 	u32 instruction_essa;
246 	u32 instruction_sigp_sense;
247 	u32 instruction_sigp_sense_running;
248 	u32 instruction_sigp_external_call;
249 	u32 instruction_sigp_emergency;
250 	u32 instruction_sigp_cond_emergency;
251 	u32 instruction_sigp_start;
252 	u32 instruction_sigp_stop;
253 	u32 instruction_sigp_stop_store_status;
254 	u32 instruction_sigp_store_status;
255 	u32 instruction_sigp_store_adtl_status;
256 	u32 instruction_sigp_arch;
257 	u32 instruction_sigp_prefix;
258 	u32 instruction_sigp_restart;
259 	u32 instruction_sigp_init_cpu_reset;
260 	u32 instruction_sigp_cpu_reset;
261 	u32 instruction_sigp_unknown;
262 	u32 diagnose_10;
263 	u32 diagnose_44;
264 	u32 diagnose_9c;
265 	u32 diagnose_258;
266 	u32 diagnose_308;
267 	u32 diagnose_500;
268 };
269 
270 #define PGM_OPERATION			0x01
271 #define PGM_PRIVILEGED_OP		0x02
272 #define PGM_EXECUTE			0x03
273 #define PGM_PROTECTION			0x04
274 #define PGM_ADDRESSING			0x05
275 #define PGM_SPECIFICATION		0x06
276 #define PGM_DATA			0x07
277 #define PGM_FIXED_POINT_OVERFLOW	0x08
278 #define PGM_FIXED_POINT_DIVIDE		0x09
279 #define PGM_DECIMAL_OVERFLOW		0x0a
280 #define PGM_DECIMAL_DIVIDE		0x0b
281 #define PGM_HFP_EXPONENT_OVERFLOW	0x0c
282 #define PGM_HFP_EXPONENT_UNDERFLOW	0x0d
283 #define PGM_HFP_SIGNIFICANCE		0x0e
284 #define PGM_HFP_DIVIDE			0x0f
285 #define PGM_SEGMENT_TRANSLATION		0x10
286 #define PGM_PAGE_TRANSLATION		0x11
287 #define PGM_TRANSLATION_SPEC		0x12
288 #define PGM_SPECIAL_OPERATION		0x13
289 #define PGM_OPERAND			0x15
290 #define PGM_TRACE_TABEL			0x16
291 #define PGM_VECTOR_PROCESSING		0x1b
292 #define PGM_SPACE_SWITCH		0x1c
293 #define PGM_HFP_SQUARE_ROOT		0x1d
294 #define PGM_PC_TRANSLATION_SPEC		0x1f
295 #define PGM_AFX_TRANSLATION		0x20
296 #define PGM_ASX_TRANSLATION		0x21
297 #define PGM_LX_TRANSLATION		0x22
298 #define PGM_EX_TRANSLATION		0x23
299 #define PGM_PRIMARY_AUTHORITY		0x24
300 #define PGM_SECONDARY_AUTHORITY		0x25
301 #define PGM_LFX_TRANSLATION		0x26
302 #define PGM_LSX_TRANSLATION		0x27
303 #define PGM_ALET_SPECIFICATION		0x28
304 #define PGM_ALEN_TRANSLATION		0x29
305 #define PGM_ALE_SEQUENCE		0x2a
306 #define PGM_ASTE_VALIDITY		0x2b
307 #define PGM_ASTE_SEQUENCE		0x2c
308 #define PGM_EXTENDED_AUTHORITY		0x2d
309 #define PGM_LSTE_SEQUENCE		0x2e
310 #define PGM_ASTE_INSTANCE		0x2f
311 #define PGM_STACK_FULL			0x30
312 #define PGM_STACK_EMPTY			0x31
313 #define PGM_STACK_SPECIFICATION		0x32
314 #define PGM_STACK_TYPE			0x33
315 #define PGM_STACK_OPERATION		0x34
316 #define PGM_ASCE_TYPE			0x38
317 #define PGM_REGION_FIRST_TRANS		0x39
318 #define PGM_REGION_SECOND_TRANS		0x3a
319 #define PGM_REGION_THIRD_TRANS		0x3b
320 #define PGM_MONITOR			0x40
321 #define PGM_PER				0x80
322 #define PGM_CRYPTO_OPERATION		0x119
323 
324 /* irq types in order of priority */
325 enum irq_types {
326 	IRQ_PEND_MCHK_EX = 0,
327 	IRQ_PEND_SVC,
328 	IRQ_PEND_PROG,
329 	IRQ_PEND_MCHK_REP,
330 	IRQ_PEND_EXT_IRQ_KEY,
331 	IRQ_PEND_EXT_MALFUNC,
332 	IRQ_PEND_EXT_EMERGENCY,
333 	IRQ_PEND_EXT_EXTERNAL,
334 	IRQ_PEND_EXT_CLOCK_COMP,
335 	IRQ_PEND_EXT_CPU_TIMER,
336 	IRQ_PEND_EXT_TIMING,
337 	IRQ_PEND_EXT_SERVICE,
338 	IRQ_PEND_EXT_HOST,
339 	IRQ_PEND_PFAULT_INIT,
340 	IRQ_PEND_PFAULT_DONE,
341 	IRQ_PEND_VIRTIO,
342 	IRQ_PEND_IO_ISC_0,
343 	IRQ_PEND_IO_ISC_1,
344 	IRQ_PEND_IO_ISC_2,
345 	IRQ_PEND_IO_ISC_3,
346 	IRQ_PEND_IO_ISC_4,
347 	IRQ_PEND_IO_ISC_5,
348 	IRQ_PEND_IO_ISC_6,
349 	IRQ_PEND_IO_ISC_7,
350 	IRQ_PEND_SIGP_STOP,
351 	IRQ_PEND_RESTART,
352 	IRQ_PEND_SET_PREFIX,
353 	IRQ_PEND_COUNT
354 };
355 
356 /* We have 2M for virtio device descriptor pages. Smallest amount of
357  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
358  */
359 #define KVM_S390_MAX_VIRTIO_IRQS 87381
360 
361 /*
362  * Repressible (non-floating) machine check interrupts
363  * subclass bits in MCIC
364  */
365 #define MCHK_EXTD_BIT 58
366 #define MCHK_DEGR_BIT 56
367 #define MCHK_WARN_BIT 55
368 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
369 		       (1UL << MCHK_EXTD_BIT) | \
370 		       (1UL << MCHK_WARN_BIT))
371 
372 /* Exigent machine check interrupts subclass bits in MCIC */
373 #define MCHK_SD_BIT 63
374 #define MCHK_PD_BIT 62
375 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
376 
377 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
378 			   (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
379 			   (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
380 			   (1UL << IRQ_PEND_EXT_MALFUNC)    | \
381 			   (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
382 			   (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
383 			   (1UL << IRQ_PEND_EXT_TIMING)     | \
384 			   (1UL << IRQ_PEND_EXT_HOST)       | \
385 			   (1UL << IRQ_PEND_EXT_SERVICE)    | \
386 			   (1UL << IRQ_PEND_VIRTIO)         | \
387 			   (1UL << IRQ_PEND_PFAULT_INIT)    | \
388 			   (1UL << IRQ_PEND_PFAULT_DONE))
389 
390 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
391 			  (1UL << IRQ_PEND_IO_ISC_1) | \
392 			  (1UL << IRQ_PEND_IO_ISC_2) | \
393 			  (1UL << IRQ_PEND_IO_ISC_3) | \
394 			  (1UL << IRQ_PEND_IO_ISC_4) | \
395 			  (1UL << IRQ_PEND_IO_ISC_5) | \
396 			  (1UL << IRQ_PEND_IO_ISC_6) | \
397 			  (1UL << IRQ_PEND_IO_ISC_7))
398 
399 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
400 			    (1UL << IRQ_PEND_MCHK_EX))
401 
402 struct kvm_s390_interrupt_info {
403 	struct list_head list;
404 	u64	type;
405 	union {
406 		struct kvm_s390_io_info io;
407 		struct kvm_s390_ext_info ext;
408 		struct kvm_s390_pgm_info pgm;
409 		struct kvm_s390_emerg_info emerg;
410 		struct kvm_s390_extcall_info extcall;
411 		struct kvm_s390_prefix_info prefix;
412 		struct kvm_s390_stop_info stop;
413 		struct kvm_s390_mchk_info mchk;
414 	};
415 };
416 
417 struct kvm_s390_irq_payload {
418 	struct kvm_s390_io_info io;
419 	struct kvm_s390_ext_info ext;
420 	struct kvm_s390_pgm_info pgm;
421 	struct kvm_s390_emerg_info emerg;
422 	struct kvm_s390_extcall_info extcall;
423 	struct kvm_s390_prefix_info prefix;
424 	struct kvm_s390_stop_info stop;
425 	struct kvm_s390_mchk_info mchk;
426 };
427 
428 struct kvm_s390_local_interrupt {
429 	spinlock_t lock;
430 	struct kvm_s390_float_interrupt *float_int;
431 	wait_queue_head_t *wq;
432 	atomic_t *cpuflags;
433 	DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
434 	struct kvm_s390_irq_payload irq;
435 	unsigned long pending_irqs;
436 };
437 
438 #define FIRQ_LIST_IO_ISC_0 0
439 #define FIRQ_LIST_IO_ISC_1 1
440 #define FIRQ_LIST_IO_ISC_2 2
441 #define FIRQ_LIST_IO_ISC_3 3
442 #define FIRQ_LIST_IO_ISC_4 4
443 #define FIRQ_LIST_IO_ISC_5 5
444 #define FIRQ_LIST_IO_ISC_6 6
445 #define FIRQ_LIST_IO_ISC_7 7
446 #define FIRQ_LIST_PFAULT   8
447 #define FIRQ_LIST_VIRTIO   9
448 #define FIRQ_LIST_COUNT   10
449 #define FIRQ_CNTR_IO       0
450 #define FIRQ_CNTR_SERVICE  1
451 #define FIRQ_CNTR_VIRTIO   2
452 #define FIRQ_CNTR_PFAULT   3
453 #define FIRQ_MAX_COUNT     4
454 
455 struct kvm_s390_float_interrupt {
456 	unsigned long pending_irqs;
457 	spinlock_t lock;
458 	struct list_head lists[FIRQ_LIST_COUNT];
459 	int counters[FIRQ_MAX_COUNT];
460 	struct kvm_s390_mchk_info mchk;
461 	struct kvm_s390_ext_info srv_signal;
462 	int next_rr_cpu;
463 	unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
464 };
465 
466 struct kvm_hw_wp_info_arch {
467 	unsigned long addr;
468 	unsigned long phys_addr;
469 	int len;
470 	char *old_data;
471 };
472 
473 struct kvm_hw_bp_info_arch {
474 	unsigned long addr;
475 	int len;
476 };
477 
478 /*
479  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
480  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
481  * arch/s390/include/uapi/asm/kvm.h
482  */
483 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
484 
485 #define guestdbg_enabled(vcpu) \
486 		(vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
487 #define guestdbg_sstep_enabled(vcpu) \
488 		(vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
489 #define guestdbg_hw_bp_enabled(vcpu) \
490 		(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
491 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
492 		(vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
493 
494 struct kvm_guestdbg_info_arch {
495 	unsigned long cr0;
496 	unsigned long cr9;
497 	unsigned long cr10;
498 	unsigned long cr11;
499 	struct kvm_hw_bp_info_arch *hw_bp_info;
500 	struct kvm_hw_wp_info_arch *hw_wp_info;
501 	int nr_hw_bp;
502 	int nr_hw_wp;
503 	unsigned long last_bp;
504 };
505 
506 struct kvm_vcpu_arch {
507 	struct kvm_s390_sie_block *sie_block;
508 	unsigned int      host_acrs[NUM_ACRS];
509 	struct fpu	  host_fpregs;
510 	struct kvm_s390_local_interrupt local_int;
511 	struct hrtimer    ckc_timer;
512 	struct kvm_s390_pgm_info pgm;
513 	union  {
514 		struct cpuid	cpu_id;
515 		u64		stidp_data;
516 	};
517 	struct gmap *gmap;
518 	struct kvm_guestdbg_info_arch guestdbg;
519 	unsigned long pfault_token;
520 	unsigned long pfault_select;
521 	unsigned long pfault_compare;
522 };
523 
524 struct kvm_vm_stat {
525 	u32 remote_tlb_flush;
526 };
527 
528 struct kvm_arch_memory_slot {
529 };
530 
531 struct s390_map_info {
532 	struct list_head list;
533 	__u64 guest_addr;
534 	__u64 addr;
535 	struct page *page;
536 };
537 
538 struct s390_io_adapter {
539 	unsigned int id;
540 	int isc;
541 	bool maskable;
542 	bool masked;
543 	bool swap;
544 	struct rw_semaphore maps_lock;
545 	struct list_head maps;
546 	atomic_t nr_maps;
547 };
548 
549 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
550 #define MAX_S390_ADAPTER_MAPS 256
551 
552 /* maximum size of facilities and facility mask is 2k bytes */
553 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
554 #define S390_ARCH_FAC_LIST_SIZE_U64 \
555 	(S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
556 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
557 #define S390_ARCH_FAC_MASK_SIZE_U64 \
558 	(S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
559 
560 struct kvm_s390_fac {
561 	/* facility list requested by guest */
562 	__u64 list[S390_ARCH_FAC_LIST_SIZE_U64];
563 	/* facility mask supported by kvm & hosting machine */
564 	__u64 mask[S390_ARCH_FAC_LIST_SIZE_U64];
565 };
566 
567 struct kvm_s390_cpu_model {
568 	struct kvm_s390_fac *fac;
569 	struct cpuid cpu_id;
570 	unsigned short ibc;
571 };
572 
573 struct kvm_s390_crypto {
574 	struct kvm_s390_crypto_cb *crycb;
575 	__u32 crycbd;
576 	__u8 aes_kw;
577 	__u8 dea_kw;
578 };
579 
580 struct kvm_s390_crypto_cb {
581 	__u8    reserved00[72];                 /* 0x0000 */
582 	__u8    dea_wrapping_key_mask[24];      /* 0x0048 */
583 	__u8    aes_wrapping_key_mask[32];      /* 0x0060 */
584 	__u8    reserved80[128];                /* 0x0080 */
585 };
586 
587 struct kvm_arch{
588 	struct sca_block *sca;
589 	debug_info_t *dbf;
590 	struct kvm_s390_float_interrupt float_int;
591 	struct kvm_device *flic;
592 	struct gmap *gmap;
593 	int css_support;
594 	int use_irqchip;
595 	int use_cmma;
596 	int user_cpu_state_ctrl;
597 	int user_sigp;
598 	int user_stsi;
599 	struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
600 	wait_queue_head_t ipte_wq;
601 	int ipte_lock_count;
602 	struct mutex ipte_mutex;
603 	spinlock_t start_stop_lock;
604 	struct kvm_s390_cpu_model model;
605 	struct kvm_s390_crypto crypto;
606 	u64 epoch;
607 };
608 
609 #define KVM_HVA_ERR_BAD		(-1UL)
610 #define KVM_HVA_ERR_RO_BAD	(-2UL)
611 
kvm_is_error_hva(unsigned long addr)612 static inline bool kvm_is_error_hva(unsigned long addr)
613 {
614 	return IS_ERR_VALUE(addr);
615 }
616 
617 #define ASYNC_PF_PER_VCPU	64
618 struct kvm_arch_async_pf {
619 	unsigned long pfault_token;
620 };
621 
622 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
623 
624 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
625 			       struct kvm_async_pf *work);
626 
627 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
628 				     struct kvm_async_pf *work);
629 
630 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
631 				 struct kvm_async_pf *work);
632 
633 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
634 extern char sie_exit;
635 
kvm_arch_hardware_disable(void)636 static inline void kvm_arch_hardware_disable(void) {}
kvm_arch_check_processor_compat(void * rtn)637 static inline void kvm_arch_check_processor_compat(void *rtn) {}
kvm_arch_sync_events(struct kvm * kvm)638 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
kvm_arch_vcpu_uninit(struct kvm_vcpu * vcpu)639 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
kvm_arch_sched_in(struct kvm_vcpu * vcpu,int cpu)640 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
kvm_arch_free_memslot(struct kvm * kvm,struct kvm_memory_slot * free,struct kvm_memory_slot * dont)641 static inline void kvm_arch_free_memslot(struct kvm *kvm,
642 		struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
kvm_arch_memslots_updated(struct kvm * kvm,struct kvm_memslots * slots)643 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
kvm_arch_flush_shadow_all(struct kvm * kvm)644 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
kvm_arch_flush_shadow_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)645 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
646 		struct kvm_memory_slot *slot) {}
kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)647 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)648 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
649 
650 #endif
651