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
29 #define KVM_S390_BSCA_CPU_SLOTS 64
30 #define KVM_S390_ESCA_CPU_SLOTS 248
31 #define KVM_MAX_VCPUS 255
32 #define KVM_USER_MEM_SLOTS 32
33
34 /*
35 * These seem to be used for allocating ->chip in the routing table,
36 * which we don't use. 4096 is an out-of-thin-air value. If we need
37 * 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 4096
41 #define KVM_HALT_POLL_NS_DEFAULT 80000
42
43 /* s390-specific vcpu->requests bit members */
44 #define KVM_REQ_ENABLE_IBS 8
45 #define KVM_REQ_DISABLE_IBS 9
46 #define KVM_REQ_ICPT_OPEREXC 10
47
48 #define SIGP_CTRL_C 0x80
49 #define SIGP_CTRL_SCN_MASK 0x3f
50
51 union bsca_sigp_ctrl {
52 __u8 value;
53 struct {
54 __u8 c : 1;
55 __u8 r : 1;
56 __u8 scn : 6;
57 };
58 } __packed;
59
60 union esca_sigp_ctrl {
61 __u16 value;
62 struct {
63 __u8 c : 1;
64 __u8 reserved: 7;
65 __u8 scn;
66 };
67 } __packed;
68
69 struct esca_entry {
70 union esca_sigp_ctrl sigp_ctrl;
71 __u16 reserved1[3];
72 __u64 sda;
73 __u64 reserved2[6];
74 } __packed;
75
76 struct bsca_entry {
77 __u8 reserved0;
78 union bsca_sigp_ctrl sigp_ctrl;
79 __u16 reserved[3];
80 __u64 sda;
81 __u64 reserved2[2];
82 } __attribute__((packed));
83
84 union ipte_control {
85 unsigned long val;
86 struct {
87 unsigned long k : 1;
88 unsigned long kh : 31;
89 unsigned long kg : 32;
90 };
91 };
92
93 struct bsca_block {
94 union ipte_control ipte_control;
95 __u64 reserved[5];
96 __u64 mcn;
97 __u64 reserved2;
98 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
99 } __attribute__((packed));
100
101 struct esca_block {
102 union ipte_control ipte_control;
103 __u64 reserved1[7];
104 __u64 mcn[4];
105 __u64 reserved2[20];
106 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
107 } __packed;
108
109 #define CPUSTAT_STOPPED 0x80000000
110 #define CPUSTAT_WAIT 0x10000000
111 #define CPUSTAT_ECALL_PEND 0x08000000
112 #define CPUSTAT_STOP_INT 0x04000000
113 #define CPUSTAT_IO_INT 0x02000000
114 #define CPUSTAT_EXT_INT 0x01000000
115 #define CPUSTAT_RUNNING 0x00800000
116 #define CPUSTAT_RETAINED 0x00400000
117 #define CPUSTAT_TIMING_SUB 0x00020000
118 #define CPUSTAT_SIE_SUB 0x00010000
119 #define CPUSTAT_RRF 0x00008000
120 #define CPUSTAT_SLSV 0x00004000
121 #define CPUSTAT_SLSR 0x00002000
122 #define CPUSTAT_ZARCH 0x00000800
123 #define CPUSTAT_MCDS 0x00000100
124 #define CPUSTAT_SM 0x00000080
125 #define CPUSTAT_IBS 0x00000040
126 #define CPUSTAT_GED2 0x00000010
127 #define CPUSTAT_G 0x00000008
128 #define CPUSTAT_GED 0x00000004
129 #define CPUSTAT_J 0x00000002
130 #define CPUSTAT_P 0x00000001
131
132 struct kvm_s390_sie_block {
133 atomic_t cpuflags; /* 0x0000 */
134 __u32 : 1; /* 0x0004 */
135 __u32 prefix : 18;
136 __u32 : 1;
137 __u32 ibc : 12;
138 __u8 reserved08[4]; /* 0x0008 */
139 #define PROG_IN_SIE (1<<0)
140 __u32 prog0c; /* 0x000c */
141 __u8 reserved10[16]; /* 0x0010 */
142 #define PROG_BLOCK_SIE (1<<0)
143 #define PROG_REQUEST (1<<1)
144 atomic_t prog20; /* 0x0020 */
145 __u8 reserved24[4]; /* 0x0024 */
146 __u64 cputm; /* 0x0028 */
147 __u64 ckc; /* 0x0030 */
148 __u64 epoch; /* 0x0038 */
149 __u32 svcc; /* 0x0040 */
150 #define LCTL_CR0 0x8000
151 #define LCTL_CR6 0x0200
152 #define LCTL_CR9 0x0040
153 #define LCTL_CR10 0x0020
154 #define LCTL_CR11 0x0010
155 #define LCTL_CR14 0x0002
156 __u16 lctl; /* 0x0044 */
157 __s16 icpua; /* 0x0046 */
158 #define ICTL_OPEREXC 0x80000000
159 #define ICTL_PINT 0x20000000
160 #define ICTL_LPSW 0x00400000
161 #define ICTL_STCTL 0x00040000
162 #define ICTL_ISKE 0x00004000
163 #define ICTL_SSKE 0x00002000
164 #define ICTL_RRBE 0x00001000
165 #define ICTL_TPROT 0x00000200
166 __u32 ictl; /* 0x0048 */
167 __u32 eca; /* 0x004c */
168 #define ICPT_INST 0x04
169 #define ICPT_PROGI 0x08
170 #define ICPT_INSTPROGI 0x0C
171 #define ICPT_EXTINT 0x14
172 #define ICPT_VALIDITY 0x20
173 #define ICPT_STOP 0x28
174 #define ICPT_OPEREXC 0x2C
175 #define ICPT_PARTEXEC 0x38
176 #define ICPT_IOINST 0x40
177 __u8 icptcode; /* 0x0050 */
178 __u8 icptstatus; /* 0x0051 */
179 __u16 ihcpu; /* 0x0052 */
180 __u8 reserved54[2]; /* 0x0054 */
181 __u16 ipa; /* 0x0056 */
182 __u32 ipb; /* 0x0058 */
183 __u32 scaoh; /* 0x005c */
184 #define FPF_BPBC 0x20
185 __u8 fpf; /* 0x0060 */
186 __u8 ecb; /* 0x0061 */
187 __u8 ecb2; /* 0x0062 */
188 #define ECB3_AES 0x04
189 #define ECB3_DEA 0x08
190 __u8 ecb3; /* 0x0063 */
191 __u32 scaol; /* 0x0064 */
192 __u8 reserved68[4]; /* 0x0068 */
193 __u32 todpr; /* 0x006c */
194 __u8 reserved70[16]; /* 0x0070 */
195 __u64 mso; /* 0x0080 */
196 __u64 msl; /* 0x0088 */
197 psw_t gpsw; /* 0x0090 */
198 __u64 gg14; /* 0x00a0 */
199 __u64 gg15; /* 0x00a8 */
200 __u8 reservedb0[20]; /* 0x00b0 */
201 __u16 extcpuaddr; /* 0x00c4 */
202 __u16 eic; /* 0x00c6 */
203 __u32 reservedc8; /* 0x00c8 */
204 __u16 pgmilc; /* 0x00cc */
205 __u16 iprcc; /* 0x00ce */
206 __u32 dxc; /* 0x00d0 */
207 __u16 mcn; /* 0x00d4 */
208 __u8 perc; /* 0x00d6 */
209 __u8 peratmid; /* 0x00d7 */
210 __u64 peraddr; /* 0x00d8 */
211 __u8 eai; /* 0x00e0 */
212 __u8 peraid; /* 0x00e1 */
213 __u8 oai; /* 0x00e2 */
214 __u8 armid; /* 0x00e3 */
215 __u8 reservede4[4]; /* 0x00e4 */
216 __u64 tecmc; /* 0x00e8 */
217 __u8 reservedf0[12]; /* 0x00f0 */
218 #define CRYCB_FORMAT1 0x00000001
219 #define CRYCB_FORMAT2 0x00000003
220 __u32 crycbd; /* 0x00fc */
221 __u64 gcr[16]; /* 0x0100 */
222 __u64 gbea; /* 0x0180 */
223 __u8 reserved188[24]; /* 0x0188 */
224 __u32 fac; /* 0x01a0 */
225 __u8 reserved1a4[20]; /* 0x01a4 */
226 __u64 cbrlo; /* 0x01b8 */
227 __u8 reserved1c0[8]; /* 0x01c0 */
228 __u32 ecd; /* 0x01c8 */
229 __u8 reserved1cc[18]; /* 0x01cc */
230 __u64 pp; /* 0x01de */
231 __u8 reserved1e6[2]; /* 0x01e6 */
232 __u64 itdba; /* 0x01e8 */
233 __u64 riccbd; /* 0x01f0 */
234 __u64 gvrd; /* 0x01f8 */
235 } __attribute__((packed));
236
237 struct kvm_s390_itdb {
238 __u8 data[256];
239 } __packed;
240
241 struct sie_page {
242 struct kvm_s390_sie_block sie_block;
243 __u8 reserved200[1024]; /* 0x0200 */
244 struct kvm_s390_itdb itdb; /* 0x0600 */
245 __u8 reserved700[2304]; /* 0x0700 */
246 } __packed;
247
248 struct kvm_vcpu_stat {
249 u64 exit_userspace;
250 u64 exit_null;
251 u64 exit_external_request;
252 u64 exit_external_interrupt;
253 u64 exit_stop_request;
254 u64 exit_validity;
255 u64 exit_instruction;
256 u64 exit_pei;
257 u64 halt_successful_poll;
258 u64 halt_attempted_poll;
259 u64 halt_poll_invalid;
260 u64 halt_wakeup;
261 u64 instruction_lctl;
262 u64 instruction_lctlg;
263 u64 instruction_stctl;
264 u64 instruction_stctg;
265 u64 exit_program_interruption;
266 u64 exit_instr_and_program;
267 u64 exit_operation_exception;
268 u64 deliver_external_call;
269 u64 deliver_emergency_signal;
270 u64 deliver_service_signal;
271 u64 deliver_virtio_interrupt;
272 u64 deliver_stop_signal;
273 u64 deliver_prefix_signal;
274 u64 deliver_restart_signal;
275 u64 deliver_program_int;
276 u64 deliver_io_int;
277 u64 exit_wait_state;
278 u64 instruction_pfmf;
279 u64 instruction_stidp;
280 u64 instruction_spx;
281 u64 instruction_stpx;
282 u64 instruction_stap;
283 u64 instruction_storage_key;
284 u64 instruction_ipte_interlock;
285 u64 instruction_stsch;
286 u64 instruction_chsc;
287 u64 instruction_stsi;
288 u64 instruction_stfl;
289 u64 instruction_tprot;
290 u64 instruction_sie;
291 u64 instruction_essa;
292 u64 instruction_sthyi;
293 u64 instruction_sigp_sense;
294 u64 instruction_sigp_sense_running;
295 u64 instruction_sigp_external_call;
296 u64 instruction_sigp_emergency;
297 u64 instruction_sigp_cond_emergency;
298 u64 instruction_sigp_start;
299 u64 instruction_sigp_stop;
300 u64 instruction_sigp_stop_store_status;
301 u64 instruction_sigp_store_status;
302 u64 instruction_sigp_store_adtl_status;
303 u64 instruction_sigp_arch;
304 u64 instruction_sigp_prefix;
305 u64 instruction_sigp_restart;
306 u64 instruction_sigp_init_cpu_reset;
307 u64 instruction_sigp_cpu_reset;
308 u64 instruction_sigp_unknown;
309 u64 diagnose_10;
310 u64 diagnose_44;
311 u64 diagnose_9c;
312 u64 diagnose_258;
313 u64 diagnose_308;
314 u64 diagnose_500;
315 };
316
317 #define PGM_OPERATION 0x01
318 #define PGM_PRIVILEGED_OP 0x02
319 #define PGM_EXECUTE 0x03
320 #define PGM_PROTECTION 0x04
321 #define PGM_ADDRESSING 0x05
322 #define PGM_SPECIFICATION 0x06
323 #define PGM_DATA 0x07
324 #define PGM_FIXED_POINT_OVERFLOW 0x08
325 #define PGM_FIXED_POINT_DIVIDE 0x09
326 #define PGM_DECIMAL_OVERFLOW 0x0a
327 #define PGM_DECIMAL_DIVIDE 0x0b
328 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c
329 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d
330 #define PGM_HFP_SIGNIFICANCE 0x0e
331 #define PGM_HFP_DIVIDE 0x0f
332 #define PGM_SEGMENT_TRANSLATION 0x10
333 #define PGM_PAGE_TRANSLATION 0x11
334 #define PGM_TRANSLATION_SPEC 0x12
335 #define PGM_SPECIAL_OPERATION 0x13
336 #define PGM_OPERAND 0x15
337 #define PGM_TRACE_TABEL 0x16
338 #define PGM_VECTOR_PROCESSING 0x1b
339 #define PGM_SPACE_SWITCH 0x1c
340 #define PGM_HFP_SQUARE_ROOT 0x1d
341 #define PGM_PC_TRANSLATION_SPEC 0x1f
342 #define PGM_AFX_TRANSLATION 0x20
343 #define PGM_ASX_TRANSLATION 0x21
344 #define PGM_LX_TRANSLATION 0x22
345 #define PGM_EX_TRANSLATION 0x23
346 #define PGM_PRIMARY_AUTHORITY 0x24
347 #define PGM_SECONDARY_AUTHORITY 0x25
348 #define PGM_LFX_TRANSLATION 0x26
349 #define PGM_LSX_TRANSLATION 0x27
350 #define PGM_ALET_SPECIFICATION 0x28
351 #define PGM_ALEN_TRANSLATION 0x29
352 #define PGM_ALE_SEQUENCE 0x2a
353 #define PGM_ASTE_VALIDITY 0x2b
354 #define PGM_ASTE_SEQUENCE 0x2c
355 #define PGM_EXTENDED_AUTHORITY 0x2d
356 #define PGM_LSTE_SEQUENCE 0x2e
357 #define PGM_ASTE_INSTANCE 0x2f
358 #define PGM_STACK_FULL 0x30
359 #define PGM_STACK_EMPTY 0x31
360 #define PGM_STACK_SPECIFICATION 0x32
361 #define PGM_STACK_TYPE 0x33
362 #define PGM_STACK_OPERATION 0x34
363 #define PGM_ASCE_TYPE 0x38
364 #define PGM_REGION_FIRST_TRANS 0x39
365 #define PGM_REGION_SECOND_TRANS 0x3a
366 #define PGM_REGION_THIRD_TRANS 0x3b
367 #define PGM_MONITOR 0x40
368 #define PGM_PER 0x80
369 #define PGM_CRYPTO_OPERATION 0x119
370
371 /* irq types in order of priority */
372 enum irq_types {
373 IRQ_PEND_MCHK_EX = 0,
374 IRQ_PEND_SVC,
375 IRQ_PEND_PROG,
376 IRQ_PEND_MCHK_REP,
377 IRQ_PEND_EXT_IRQ_KEY,
378 IRQ_PEND_EXT_MALFUNC,
379 IRQ_PEND_EXT_EMERGENCY,
380 IRQ_PEND_EXT_EXTERNAL,
381 IRQ_PEND_EXT_CLOCK_COMP,
382 IRQ_PEND_EXT_CPU_TIMER,
383 IRQ_PEND_EXT_TIMING,
384 IRQ_PEND_EXT_SERVICE,
385 IRQ_PEND_EXT_HOST,
386 IRQ_PEND_PFAULT_INIT,
387 IRQ_PEND_PFAULT_DONE,
388 IRQ_PEND_VIRTIO,
389 IRQ_PEND_IO_ISC_0,
390 IRQ_PEND_IO_ISC_1,
391 IRQ_PEND_IO_ISC_2,
392 IRQ_PEND_IO_ISC_3,
393 IRQ_PEND_IO_ISC_4,
394 IRQ_PEND_IO_ISC_5,
395 IRQ_PEND_IO_ISC_6,
396 IRQ_PEND_IO_ISC_7,
397 IRQ_PEND_SIGP_STOP,
398 IRQ_PEND_RESTART,
399 IRQ_PEND_SET_PREFIX,
400 IRQ_PEND_COUNT
401 };
402
403 /* We have 2M for virtio device descriptor pages. Smallest amount of
404 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
405 */
406 #define KVM_S390_MAX_VIRTIO_IRQS 87381
407
408 /*
409 * Repressible (non-floating) machine check interrupts
410 * subclass bits in MCIC
411 */
412 #define MCHK_EXTD_BIT 58
413 #define MCHK_DEGR_BIT 56
414 #define MCHK_WARN_BIT 55
415 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
416 (1UL << MCHK_EXTD_BIT) | \
417 (1UL << MCHK_WARN_BIT))
418
419 /* Exigent machine check interrupts subclass bits in MCIC */
420 #define MCHK_SD_BIT 63
421 #define MCHK_PD_BIT 62
422 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
423
424 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \
425 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
426 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \
427 (1UL << IRQ_PEND_EXT_MALFUNC) | \
428 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
429 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
430 (1UL << IRQ_PEND_EXT_TIMING) | \
431 (1UL << IRQ_PEND_EXT_HOST) | \
432 (1UL << IRQ_PEND_EXT_SERVICE) | \
433 (1UL << IRQ_PEND_VIRTIO) | \
434 (1UL << IRQ_PEND_PFAULT_INIT) | \
435 (1UL << IRQ_PEND_PFAULT_DONE))
436
437 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
438 (1UL << IRQ_PEND_IO_ISC_1) | \
439 (1UL << IRQ_PEND_IO_ISC_2) | \
440 (1UL << IRQ_PEND_IO_ISC_3) | \
441 (1UL << IRQ_PEND_IO_ISC_4) | \
442 (1UL << IRQ_PEND_IO_ISC_5) | \
443 (1UL << IRQ_PEND_IO_ISC_6) | \
444 (1UL << IRQ_PEND_IO_ISC_7))
445
446 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
447 (1UL << IRQ_PEND_MCHK_EX))
448
449 struct kvm_s390_interrupt_info {
450 struct list_head list;
451 u64 type;
452 union {
453 struct kvm_s390_io_info io;
454 struct kvm_s390_ext_info ext;
455 struct kvm_s390_pgm_info pgm;
456 struct kvm_s390_emerg_info emerg;
457 struct kvm_s390_extcall_info extcall;
458 struct kvm_s390_prefix_info prefix;
459 struct kvm_s390_stop_info stop;
460 struct kvm_s390_mchk_info mchk;
461 };
462 };
463
464 struct kvm_s390_irq_payload {
465 struct kvm_s390_io_info io;
466 struct kvm_s390_ext_info ext;
467 struct kvm_s390_pgm_info pgm;
468 struct kvm_s390_emerg_info emerg;
469 struct kvm_s390_extcall_info extcall;
470 struct kvm_s390_prefix_info prefix;
471 struct kvm_s390_stop_info stop;
472 struct kvm_s390_mchk_info mchk;
473 };
474
475 struct kvm_s390_local_interrupt {
476 spinlock_t lock;
477 struct kvm_s390_float_interrupt *float_int;
478 struct swait_queue_head *wq;
479 atomic_t *cpuflags;
480 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
481 struct kvm_s390_irq_payload irq;
482 unsigned long pending_irqs;
483 };
484
485 #define FIRQ_LIST_IO_ISC_0 0
486 #define FIRQ_LIST_IO_ISC_1 1
487 #define FIRQ_LIST_IO_ISC_2 2
488 #define FIRQ_LIST_IO_ISC_3 3
489 #define FIRQ_LIST_IO_ISC_4 4
490 #define FIRQ_LIST_IO_ISC_5 5
491 #define FIRQ_LIST_IO_ISC_6 6
492 #define FIRQ_LIST_IO_ISC_7 7
493 #define FIRQ_LIST_PFAULT 8
494 #define FIRQ_LIST_VIRTIO 9
495 #define FIRQ_LIST_COUNT 10
496 #define FIRQ_CNTR_IO 0
497 #define FIRQ_CNTR_SERVICE 1
498 #define FIRQ_CNTR_VIRTIO 2
499 #define FIRQ_CNTR_PFAULT 3
500 #define FIRQ_MAX_COUNT 4
501
502 struct kvm_s390_float_interrupt {
503 unsigned long pending_irqs;
504 spinlock_t lock;
505 struct list_head lists[FIRQ_LIST_COUNT];
506 int counters[FIRQ_MAX_COUNT];
507 struct kvm_s390_mchk_info mchk;
508 struct kvm_s390_ext_info srv_signal;
509 int next_rr_cpu;
510 unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
511 };
512
513 struct kvm_hw_wp_info_arch {
514 unsigned long addr;
515 unsigned long phys_addr;
516 int len;
517 char *old_data;
518 };
519
520 struct kvm_hw_bp_info_arch {
521 unsigned long addr;
522 int len;
523 };
524
525 /*
526 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
527 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
528 * arch/s390/include/uapi/asm/kvm.h
529 */
530 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
531
532 #define guestdbg_enabled(vcpu) \
533 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
534 #define guestdbg_sstep_enabled(vcpu) \
535 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
536 #define guestdbg_hw_bp_enabled(vcpu) \
537 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
538 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
539 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
540
541 struct kvm_guestdbg_info_arch {
542 unsigned long cr0;
543 unsigned long cr9;
544 unsigned long cr10;
545 unsigned long cr11;
546 struct kvm_hw_bp_info_arch *hw_bp_info;
547 struct kvm_hw_wp_info_arch *hw_wp_info;
548 int nr_hw_bp;
549 int nr_hw_wp;
550 unsigned long last_bp;
551 };
552
553 struct kvm_vcpu_arch {
554 struct kvm_s390_sie_block *sie_block;
555 /* if vsie is active, currently executed shadow sie control block */
556 struct kvm_s390_sie_block *vsie_block;
557 unsigned int host_acrs[NUM_ACRS];
558 struct fpu host_fpregs;
559 struct kvm_s390_local_interrupt local_int;
560 struct hrtimer ckc_timer;
561 struct kvm_s390_pgm_info pgm;
562 struct gmap *gmap;
563 /* backup location for the currently enabled gmap when scheduled out */
564 struct gmap *enabled_gmap;
565 struct kvm_guestdbg_info_arch guestdbg;
566 unsigned long pfault_token;
567 unsigned long pfault_select;
568 unsigned long pfault_compare;
569 bool cputm_enabled;
570 /*
571 * The seqcount protects updates to cputm_start and sie_block.cputm,
572 * this way we can have non-blocking reads with consistent values.
573 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
574 * values and to start/stop/enable/disable cpu timer accounting.
575 */
576 seqcount_t cputm_seqcount;
577 __u64 cputm_start;
578 };
579
580 struct kvm_vm_stat {
581 ulong remote_tlb_flush;
582 };
583
584 struct kvm_arch_memory_slot {
585 };
586
587 struct s390_map_info {
588 struct list_head list;
589 __u64 guest_addr;
590 __u64 addr;
591 struct page *page;
592 };
593
594 struct s390_io_adapter {
595 unsigned int id;
596 int isc;
597 bool maskable;
598 bool masked;
599 bool swap;
600 struct rw_semaphore maps_lock;
601 struct list_head maps;
602 atomic_t nr_maps;
603 };
604
605 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
606 #define MAX_S390_ADAPTER_MAPS 256
607
608 /* maximum size of facilities and facility mask is 2k bytes */
609 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
610 #define S390_ARCH_FAC_LIST_SIZE_U64 \
611 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
612 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
613 #define S390_ARCH_FAC_MASK_SIZE_U64 \
614 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
615
616 struct kvm_s390_cpu_model {
617 /* facility mask supported by kvm & hosting machine */
618 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
619 /* facility list requested by guest (in dma page) */
620 __u64 *fac_list;
621 u64 cpuid;
622 unsigned short ibc;
623 };
624
625 struct kvm_s390_crypto {
626 struct kvm_s390_crypto_cb *crycb;
627 __u32 crycbd;
628 __u8 aes_kw;
629 __u8 dea_kw;
630 };
631
632 struct kvm_s390_crypto_cb {
633 __u8 reserved00[72]; /* 0x0000 */
634 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */
635 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */
636 __u8 reserved80[128]; /* 0x0080 */
637 };
638
639 /*
640 * sie_page2 has to be allocated as DMA because fac_list and crycb need
641 * 31bit addresses in the sie control block.
642 */
643 struct sie_page2 {
644 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */
645 struct kvm_s390_crypto_cb crycb; /* 0x0800 */
646 u8 reserved900[0x1000 - 0x900]; /* 0x0900 */
647 } __packed;
648
649 struct kvm_s390_vsie {
650 struct mutex mutex;
651 struct radix_tree_root addr_to_page;
652 int page_count;
653 int next;
654 struct page *pages[KVM_MAX_VCPUS];
655 };
656
657 struct kvm_arch{
658 void *sca;
659 int use_esca;
660 rwlock_t sca_lock;
661 debug_info_t *dbf;
662 struct kvm_s390_float_interrupt float_int;
663 struct kvm_device *flic;
664 struct gmap *gmap;
665 unsigned long mem_limit;
666 int css_support;
667 int use_irqchip;
668 int use_cmma;
669 int user_cpu_state_ctrl;
670 int user_sigp;
671 int user_stsi;
672 int user_instr0;
673 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
674 wait_queue_head_t ipte_wq;
675 int ipte_lock_count;
676 struct mutex ipte_mutex;
677 struct ratelimit_state sthyi_limit;
678 spinlock_t start_stop_lock;
679 struct sie_page2 *sie_page2;
680 struct kvm_s390_cpu_model model;
681 struct kvm_s390_crypto crypto;
682 struct kvm_s390_vsie vsie;
683 u64 epoch;
684 /* subset of available cpu features enabled by user space */
685 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
686 };
687
688 #define KVM_HVA_ERR_BAD (-1UL)
689 #define KVM_HVA_ERR_RO_BAD (-2UL)
690
kvm_is_error_hva(unsigned long addr)691 static inline bool kvm_is_error_hva(unsigned long addr)
692 {
693 return IS_ERR_VALUE(addr);
694 }
695
696 #define ASYNC_PF_PER_VCPU 64
697 struct kvm_arch_async_pf {
698 unsigned long pfault_token;
699 };
700
701 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
702
703 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
704 struct kvm_async_pf *work);
705
706 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
707 struct kvm_async_pf *work);
708
709 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
710 struct kvm_async_pf *work);
711
712 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
713 extern char sie_exit;
714
kvm_arch_hardware_disable(void)715 static inline void kvm_arch_hardware_disable(void) {}
kvm_arch_check_processor_compat(void * rtn)716 static inline void kvm_arch_check_processor_compat(void *rtn) {}
kvm_arch_sync_events(struct kvm * kvm)717 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
kvm_arch_vcpu_uninit(struct kvm_vcpu * vcpu)718 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
kvm_arch_sched_in(struct kvm_vcpu * vcpu,int cpu)719 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)720 static inline void kvm_arch_free_memslot(struct kvm *kvm,
721 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
kvm_arch_memslots_updated(struct kvm * kvm,struct kvm_memslots * slots)722 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
kvm_arch_flush_shadow_all(struct kvm * kvm)723 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
kvm_arch_flush_shadow_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)724 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
725 struct kvm_memory_slot *slot) {}
kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)726 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)727 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
728
729 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
730
731 #endif
732