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 #include <asm/guarded_storage.h>
29
30 #define KVM_S390_BSCA_CPU_SLOTS 64
31 #define KVM_S390_ESCA_CPU_SLOTS 248
32 #define KVM_MAX_VCPUS 255
33 #define KVM_USER_MEM_SLOTS 32
34
35 /*
36 * These seem to be used for allocating ->chip in the routing table,
37 * which we don't use. 4096 is an out-of-thin-air value. If we need
38 * to look at ->chip later on, we'll need to revisit this.
39 */
40 #define KVM_NR_IRQCHIPS 1
41 #define KVM_IRQCHIP_NUM_PINS 4096
42 #define KVM_HALT_POLL_NS_DEFAULT 80000
43
44 /* s390-specific vcpu->requests bit members */
45 #define KVM_REQ_ENABLE_IBS KVM_ARCH_REQ(0)
46 #define KVM_REQ_DISABLE_IBS KVM_ARCH_REQ(1)
47 #define KVM_REQ_ICPT_OPEREXC KVM_ARCH_REQ(2)
48 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
49 #define KVM_REQ_STOP_MIGRATION KVM_ARCH_REQ(4)
50
51 #define SIGP_CTRL_C 0x80
52 #define SIGP_CTRL_SCN_MASK 0x3f
53
54 union bsca_sigp_ctrl {
55 __u8 value;
56 struct {
57 __u8 c : 1;
58 __u8 r : 1;
59 __u8 scn : 6;
60 };
61 };
62
63 union esca_sigp_ctrl {
64 __u16 value;
65 struct {
66 __u8 c : 1;
67 __u8 reserved: 7;
68 __u8 scn;
69 };
70 };
71
72 struct esca_entry {
73 union esca_sigp_ctrl sigp_ctrl;
74 __u16 reserved1[3];
75 __u64 sda;
76 __u64 reserved2[6];
77 };
78
79 struct bsca_entry {
80 __u8 reserved0;
81 union bsca_sigp_ctrl sigp_ctrl;
82 __u16 reserved[3];
83 __u64 sda;
84 __u64 reserved2[2];
85 };
86
87 union ipte_control {
88 unsigned long val;
89 struct {
90 unsigned long k : 1;
91 unsigned long kh : 31;
92 unsigned long kg : 32;
93 };
94 };
95
96 struct bsca_block {
97 union ipte_control ipte_control;
98 __u64 reserved[5];
99 __u64 mcn;
100 __u64 reserved2;
101 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
102 };
103
104 struct esca_block {
105 union ipte_control ipte_control;
106 __u64 reserved1[7];
107 __u64 mcn[4];
108 __u64 reserved2[20];
109 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
110 };
111
112 /*
113 * This struct is used to store some machine check info from lowcore
114 * for machine checks that happen while the guest is running.
115 * This info in host's lowcore might be overwritten by a second machine
116 * check from host when host is in the machine check's high-level handling.
117 * The size is 24 bytes.
118 */
119 struct mcck_volatile_info {
120 __u64 mcic;
121 __u64 failing_storage_address;
122 __u32 ext_damage_code;
123 __u32 reserved;
124 };
125
126 #define CPUSTAT_STOPPED 0x80000000
127 #define CPUSTAT_WAIT 0x10000000
128 #define CPUSTAT_ECALL_PEND 0x08000000
129 #define CPUSTAT_STOP_INT 0x04000000
130 #define CPUSTAT_IO_INT 0x02000000
131 #define CPUSTAT_EXT_INT 0x01000000
132 #define CPUSTAT_RUNNING 0x00800000
133 #define CPUSTAT_RETAINED 0x00400000
134 #define CPUSTAT_TIMING_SUB 0x00020000
135 #define CPUSTAT_SIE_SUB 0x00010000
136 #define CPUSTAT_RRF 0x00008000
137 #define CPUSTAT_SLSV 0x00004000
138 #define CPUSTAT_SLSR 0x00002000
139 #define CPUSTAT_ZARCH 0x00000800
140 #define CPUSTAT_MCDS 0x00000100
141 #define CPUSTAT_KSS 0x00000200
142 #define CPUSTAT_SM 0x00000080
143 #define CPUSTAT_IBS 0x00000040
144 #define CPUSTAT_GED2 0x00000010
145 #define CPUSTAT_G 0x00000008
146 #define CPUSTAT_GED 0x00000004
147 #define CPUSTAT_J 0x00000002
148 #define CPUSTAT_P 0x00000001
149
150 struct kvm_s390_sie_block {
151 atomic_t cpuflags; /* 0x0000 */
152 __u32 : 1; /* 0x0004 */
153 __u32 prefix : 18;
154 __u32 : 1;
155 __u32 ibc : 12;
156 __u8 reserved08[4]; /* 0x0008 */
157 #define PROG_IN_SIE (1<<0)
158 __u32 prog0c; /* 0x000c */
159 __u8 reserved10[16]; /* 0x0010 */
160 #define PROG_BLOCK_SIE (1<<0)
161 #define PROG_REQUEST (1<<1)
162 atomic_t prog20; /* 0x0020 */
163 __u8 reserved24[4]; /* 0x0024 */
164 __u64 cputm; /* 0x0028 */
165 __u64 ckc; /* 0x0030 */
166 __u64 epoch; /* 0x0038 */
167 __u32 svcc; /* 0x0040 */
168 #define LCTL_CR0 0x8000
169 #define LCTL_CR6 0x0200
170 #define LCTL_CR9 0x0040
171 #define LCTL_CR10 0x0020
172 #define LCTL_CR11 0x0010
173 #define LCTL_CR14 0x0002
174 __u16 lctl; /* 0x0044 */
175 __s16 icpua; /* 0x0046 */
176 #define ICTL_OPEREXC 0x80000000
177 #define ICTL_PINT 0x20000000
178 #define ICTL_LPSW 0x00400000
179 #define ICTL_STCTL 0x00040000
180 #define ICTL_ISKE 0x00004000
181 #define ICTL_SSKE 0x00002000
182 #define ICTL_RRBE 0x00001000
183 #define ICTL_TPROT 0x00000200
184 __u32 ictl; /* 0x0048 */
185 #define ECA_CEI 0x80000000
186 #define ECA_IB 0x40000000
187 #define ECA_SIGPI 0x10000000
188 #define ECA_MVPGI 0x01000000
189 #define ECA_VX 0x00020000
190 #define ECA_PROTEXCI 0x00002000
191 #define ECA_SII 0x00000001
192 __u32 eca; /* 0x004c */
193 #define ICPT_INST 0x04
194 #define ICPT_PROGI 0x08
195 #define ICPT_INSTPROGI 0x0C
196 #define ICPT_EXTREQ 0x10
197 #define ICPT_EXTINT 0x14
198 #define ICPT_IOREQ 0x18
199 #define ICPT_WAIT 0x1c
200 #define ICPT_VALIDITY 0x20
201 #define ICPT_STOP 0x28
202 #define ICPT_OPEREXC 0x2C
203 #define ICPT_PARTEXEC 0x38
204 #define ICPT_IOINST 0x40
205 #define ICPT_KSS 0x5c
206 __u8 icptcode; /* 0x0050 */
207 __u8 icptstatus; /* 0x0051 */
208 __u16 ihcpu; /* 0x0052 */
209 __u8 reserved54[2]; /* 0x0054 */
210 __u16 ipa; /* 0x0056 */
211 __u32 ipb; /* 0x0058 */
212 __u32 scaoh; /* 0x005c */
213 #define FPF_BPBC 0x20
214 __u8 fpf; /* 0x0060 */
215 #define ECB_GS 0x40
216 #define ECB_TE 0x10
217 #define ECB_SRSI 0x04
218 #define ECB_HOSTPROTINT 0x02
219 __u8 ecb; /* 0x0061 */
220 #define ECB2_CMMA 0x80
221 #define ECB2_IEP 0x20
222 #define ECB2_PFMFI 0x08
223 #define ECB2_ESCA 0x04
224 __u8 ecb2; /* 0x0062 */
225 #define ECB3_DEA 0x08
226 #define ECB3_AES 0x04
227 #define ECB3_RI 0x01
228 __u8 ecb3; /* 0x0063 */
229 __u32 scaol; /* 0x0064 */
230 __u8 reserved68; /* 0x0068 */
231 __u8 epdx; /* 0x0069 */
232 __u8 reserved6a[2]; /* 0x006a */
233 __u32 todpr; /* 0x006c */
234 __u8 reserved70[16]; /* 0x0070 */
235 __u64 mso; /* 0x0080 */
236 __u64 msl; /* 0x0088 */
237 psw_t gpsw; /* 0x0090 */
238 __u64 gg14; /* 0x00a0 */
239 __u64 gg15; /* 0x00a8 */
240 __u8 reservedb0[20]; /* 0x00b0 */
241 __u16 extcpuaddr; /* 0x00c4 */
242 __u16 eic; /* 0x00c6 */
243 __u32 reservedc8; /* 0x00c8 */
244 __u16 pgmilc; /* 0x00cc */
245 __u16 iprcc; /* 0x00ce */
246 __u32 dxc; /* 0x00d0 */
247 __u16 mcn; /* 0x00d4 */
248 __u8 perc; /* 0x00d6 */
249 __u8 peratmid; /* 0x00d7 */
250 __u64 peraddr; /* 0x00d8 */
251 __u8 eai; /* 0x00e0 */
252 __u8 peraid; /* 0x00e1 */
253 __u8 oai; /* 0x00e2 */
254 __u8 armid; /* 0x00e3 */
255 __u8 reservede4[4]; /* 0x00e4 */
256 __u64 tecmc; /* 0x00e8 */
257 __u8 reservedf0[12]; /* 0x00f0 */
258 #define CRYCB_FORMAT1 0x00000001
259 #define CRYCB_FORMAT2 0x00000003
260 __u32 crycbd; /* 0x00fc */
261 __u64 gcr[16]; /* 0x0100 */
262 __u64 gbea; /* 0x0180 */
263 __u8 reserved188[8]; /* 0x0188 */
264 __u64 sdnxo; /* 0x0190 */
265 __u8 reserved198[8]; /* 0x0198 */
266 __u32 fac; /* 0x01a0 */
267 __u8 reserved1a4[20]; /* 0x01a4 */
268 __u64 cbrlo; /* 0x01b8 */
269 __u8 reserved1c0[8]; /* 0x01c0 */
270 #define ECD_HOSTREGMGMT 0x20000000
271 #define ECD_MEF 0x08000000
272 __u32 ecd; /* 0x01c8 */
273 __u8 reserved1cc[18]; /* 0x01cc */
274 __u64 pp; /* 0x01de */
275 __u8 reserved1e6[2]; /* 0x01e6 */
276 __u64 itdba; /* 0x01e8 */
277 __u64 riccbd; /* 0x01f0 */
278 __u64 gvrd; /* 0x01f8 */
279 } __attribute__((packed));
280
281 struct kvm_s390_itdb {
282 __u8 data[256];
283 };
284
285 struct sie_page {
286 struct kvm_s390_sie_block sie_block;
287 struct mcck_volatile_info mcck_info; /* 0x0200 */
288 __u8 reserved218[1000]; /* 0x0218 */
289 struct kvm_s390_itdb itdb; /* 0x0600 */
290 __u8 reserved700[2304]; /* 0x0700 */
291 };
292
293 struct kvm_vcpu_stat {
294 u64 exit_userspace;
295 u64 exit_null;
296 u64 exit_external_request;
297 u64 exit_external_interrupt;
298 u64 exit_stop_request;
299 u64 exit_validity;
300 u64 exit_instruction;
301 u64 exit_pei;
302 u64 halt_successful_poll;
303 u64 halt_attempted_poll;
304 u64 halt_poll_invalid;
305 u64 halt_wakeup;
306 u64 instruction_lctl;
307 u64 instruction_lctlg;
308 u64 instruction_stctl;
309 u64 instruction_stctg;
310 u64 exit_program_interruption;
311 u64 exit_instr_and_program;
312 u64 exit_operation_exception;
313 u64 deliver_external_call;
314 u64 deliver_emergency_signal;
315 u64 deliver_service_signal;
316 u64 deliver_virtio_interrupt;
317 u64 deliver_stop_signal;
318 u64 deliver_prefix_signal;
319 u64 deliver_restart_signal;
320 u64 deliver_program_int;
321 u64 deliver_io_int;
322 u64 exit_wait_state;
323 u64 instruction_pfmf;
324 u64 instruction_stidp;
325 u64 instruction_spx;
326 u64 instruction_stpx;
327 u64 instruction_stap;
328 u64 instruction_storage_key;
329 u64 instruction_ipte_interlock;
330 u64 instruction_stsch;
331 u64 instruction_chsc;
332 u64 instruction_stsi;
333 u64 instruction_stfl;
334 u64 instruction_tprot;
335 u64 instruction_sie;
336 u64 instruction_essa;
337 u64 instruction_sthyi;
338 u64 instruction_sigp_sense;
339 u64 instruction_sigp_sense_running;
340 u64 instruction_sigp_external_call;
341 u64 instruction_sigp_emergency;
342 u64 instruction_sigp_cond_emergency;
343 u64 instruction_sigp_start;
344 u64 instruction_sigp_stop;
345 u64 instruction_sigp_stop_store_status;
346 u64 instruction_sigp_store_status;
347 u64 instruction_sigp_store_adtl_status;
348 u64 instruction_sigp_arch;
349 u64 instruction_sigp_prefix;
350 u64 instruction_sigp_restart;
351 u64 instruction_sigp_init_cpu_reset;
352 u64 instruction_sigp_cpu_reset;
353 u64 instruction_sigp_unknown;
354 u64 diagnose_10;
355 u64 diagnose_44;
356 u64 diagnose_9c;
357 u64 diagnose_258;
358 u64 diagnose_308;
359 u64 diagnose_500;
360 };
361
362 #define PGM_OPERATION 0x01
363 #define PGM_PRIVILEGED_OP 0x02
364 #define PGM_EXECUTE 0x03
365 #define PGM_PROTECTION 0x04
366 #define PGM_ADDRESSING 0x05
367 #define PGM_SPECIFICATION 0x06
368 #define PGM_DATA 0x07
369 #define PGM_FIXED_POINT_OVERFLOW 0x08
370 #define PGM_FIXED_POINT_DIVIDE 0x09
371 #define PGM_DECIMAL_OVERFLOW 0x0a
372 #define PGM_DECIMAL_DIVIDE 0x0b
373 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c
374 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d
375 #define PGM_HFP_SIGNIFICANCE 0x0e
376 #define PGM_HFP_DIVIDE 0x0f
377 #define PGM_SEGMENT_TRANSLATION 0x10
378 #define PGM_PAGE_TRANSLATION 0x11
379 #define PGM_TRANSLATION_SPEC 0x12
380 #define PGM_SPECIAL_OPERATION 0x13
381 #define PGM_OPERAND 0x15
382 #define PGM_TRACE_TABEL 0x16
383 #define PGM_VECTOR_PROCESSING 0x1b
384 #define PGM_SPACE_SWITCH 0x1c
385 #define PGM_HFP_SQUARE_ROOT 0x1d
386 #define PGM_PC_TRANSLATION_SPEC 0x1f
387 #define PGM_AFX_TRANSLATION 0x20
388 #define PGM_ASX_TRANSLATION 0x21
389 #define PGM_LX_TRANSLATION 0x22
390 #define PGM_EX_TRANSLATION 0x23
391 #define PGM_PRIMARY_AUTHORITY 0x24
392 #define PGM_SECONDARY_AUTHORITY 0x25
393 #define PGM_LFX_TRANSLATION 0x26
394 #define PGM_LSX_TRANSLATION 0x27
395 #define PGM_ALET_SPECIFICATION 0x28
396 #define PGM_ALEN_TRANSLATION 0x29
397 #define PGM_ALE_SEQUENCE 0x2a
398 #define PGM_ASTE_VALIDITY 0x2b
399 #define PGM_ASTE_SEQUENCE 0x2c
400 #define PGM_EXTENDED_AUTHORITY 0x2d
401 #define PGM_LSTE_SEQUENCE 0x2e
402 #define PGM_ASTE_INSTANCE 0x2f
403 #define PGM_STACK_FULL 0x30
404 #define PGM_STACK_EMPTY 0x31
405 #define PGM_STACK_SPECIFICATION 0x32
406 #define PGM_STACK_TYPE 0x33
407 #define PGM_STACK_OPERATION 0x34
408 #define PGM_ASCE_TYPE 0x38
409 #define PGM_REGION_FIRST_TRANS 0x39
410 #define PGM_REGION_SECOND_TRANS 0x3a
411 #define PGM_REGION_THIRD_TRANS 0x3b
412 #define PGM_MONITOR 0x40
413 #define PGM_PER 0x80
414 #define PGM_CRYPTO_OPERATION 0x119
415
416 /* irq types in order of priority */
417 enum irq_types {
418 IRQ_PEND_MCHK_EX = 0,
419 IRQ_PEND_SVC,
420 IRQ_PEND_PROG,
421 IRQ_PEND_MCHK_REP,
422 IRQ_PEND_EXT_IRQ_KEY,
423 IRQ_PEND_EXT_MALFUNC,
424 IRQ_PEND_EXT_EMERGENCY,
425 IRQ_PEND_EXT_EXTERNAL,
426 IRQ_PEND_EXT_CLOCK_COMP,
427 IRQ_PEND_EXT_CPU_TIMER,
428 IRQ_PEND_EXT_TIMING,
429 IRQ_PEND_EXT_SERVICE,
430 IRQ_PEND_EXT_HOST,
431 IRQ_PEND_PFAULT_INIT,
432 IRQ_PEND_PFAULT_DONE,
433 IRQ_PEND_VIRTIO,
434 IRQ_PEND_IO_ISC_0,
435 IRQ_PEND_IO_ISC_1,
436 IRQ_PEND_IO_ISC_2,
437 IRQ_PEND_IO_ISC_3,
438 IRQ_PEND_IO_ISC_4,
439 IRQ_PEND_IO_ISC_5,
440 IRQ_PEND_IO_ISC_6,
441 IRQ_PEND_IO_ISC_7,
442 IRQ_PEND_SIGP_STOP,
443 IRQ_PEND_RESTART,
444 IRQ_PEND_SET_PREFIX,
445 IRQ_PEND_COUNT
446 };
447
448 /* We have 2M for virtio device descriptor pages. Smallest amount of
449 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
450 */
451 #define KVM_S390_MAX_VIRTIO_IRQS 87381
452
453 /*
454 * Repressible (non-floating) machine check interrupts
455 * subclass bits in MCIC
456 */
457 #define MCHK_EXTD_BIT 58
458 #define MCHK_DEGR_BIT 56
459 #define MCHK_WARN_BIT 55
460 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
461 (1UL << MCHK_EXTD_BIT) | \
462 (1UL << MCHK_WARN_BIT))
463
464 /* Exigent machine check interrupts subclass bits in MCIC */
465 #define MCHK_SD_BIT 63
466 #define MCHK_PD_BIT 62
467 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
468
469 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \
470 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
471 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \
472 (1UL << IRQ_PEND_EXT_MALFUNC) | \
473 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
474 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
475 (1UL << IRQ_PEND_EXT_TIMING) | \
476 (1UL << IRQ_PEND_EXT_HOST) | \
477 (1UL << IRQ_PEND_EXT_SERVICE) | \
478 (1UL << IRQ_PEND_VIRTIO) | \
479 (1UL << IRQ_PEND_PFAULT_INIT) | \
480 (1UL << IRQ_PEND_PFAULT_DONE))
481
482 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
483 (1UL << IRQ_PEND_IO_ISC_1) | \
484 (1UL << IRQ_PEND_IO_ISC_2) | \
485 (1UL << IRQ_PEND_IO_ISC_3) | \
486 (1UL << IRQ_PEND_IO_ISC_4) | \
487 (1UL << IRQ_PEND_IO_ISC_5) | \
488 (1UL << IRQ_PEND_IO_ISC_6) | \
489 (1UL << IRQ_PEND_IO_ISC_7))
490
491 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
492 (1UL << IRQ_PEND_MCHK_EX))
493
494 struct kvm_s390_interrupt_info {
495 struct list_head list;
496 u64 type;
497 union {
498 struct kvm_s390_io_info io;
499 struct kvm_s390_ext_info ext;
500 struct kvm_s390_pgm_info pgm;
501 struct kvm_s390_emerg_info emerg;
502 struct kvm_s390_extcall_info extcall;
503 struct kvm_s390_prefix_info prefix;
504 struct kvm_s390_stop_info stop;
505 struct kvm_s390_mchk_info mchk;
506 };
507 };
508
509 struct kvm_s390_irq_payload {
510 struct kvm_s390_io_info io;
511 struct kvm_s390_ext_info ext;
512 struct kvm_s390_pgm_info pgm;
513 struct kvm_s390_emerg_info emerg;
514 struct kvm_s390_extcall_info extcall;
515 struct kvm_s390_prefix_info prefix;
516 struct kvm_s390_stop_info stop;
517 struct kvm_s390_mchk_info mchk;
518 };
519
520 struct kvm_s390_local_interrupt {
521 spinlock_t lock;
522 struct kvm_s390_float_interrupt *float_int;
523 struct swait_queue_head *wq;
524 atomic_t *cpuflags;
525 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
526 struct kvm_s390_irq_payload irq;
527 unsigned long pending_irqs;
528 };
529
530 #define FIRQ_LIST_IO_ISC_0 0
531 #define FIRQ_LIST_IO_ISC_1 1
532 #define FIRQ_LIST_IO_ISC_2 2
533 #define FIRQ_LIST_IO_ISC_3 3
534 #define FIRQ_LIST_IO_ISC_4 4
535 #define FIRQ_LIST_IO_ISC_5 5
536 #define FIRQ_LIST_IO_ISC_6 6
537 #define FIRQ_LIST_IO_ISC_7 7
538 #define FIRQ_LIST_PFAULT 8
539 #define FIRQ_LIST_VIRTIO 9
540 #define FIRQ_LIST_COUNT 10
541 #define FIRQ_CNTR_IO 0
542 #define FIRQ_CNTR_SERVICE 1
543 #define FIRQ_CNTR_VIRTIO 2
544 #define FIRQ_CNTR_PFAULT 3
545 #define FIRQ_MAX_COUNT 4
546
547 /* mask the AIS mode for a given ISC */
548 #define AIS_MODE_MASK(isc) (0x80 >> isc)
549
550 #define KVM_S390_AIS_MODE_ALL 0
551 #define KVM_S390_AIS_MODE_SINGLE 1
552
553 struct kvm_s390_float_interrupt {
554 unsigned long pending_irqs;
555 spinlock_t lock;
556 struct list_head lists[FIRQ_LIST_COUNT];
557 int counters[FIRQ_MAX_COUNT];
558 struct kvm_s390_mchk_info mchk;
559 struct kvm_s390_ext_info srv_signal;
560 int next_rr_cpu;
561 unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
562 struct mutex ais_lock;
563 u8 simm;
564 u8 nimm;
565 };
566
567 struct kvm_hw_wp_info_arch {
568 unsigned long addr;
569 unsigned long phys_addr;
570 int len;
571 char *old_data;
572 };
573
574 struct kvm_hw_bp_info_arch {
575 unsigned long addr;
576 int len;
577 };
578
579 /*
580 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
581 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
582 * arch/s390/include/uapi/asm/kvm.h
583 */
584 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
585
586 #define guestdbg_enabled(vcpu) \
587 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
588 #define guestdbg_sstep_enabled(vcpu) \
589 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
590 #define guestdbg_hw_bp_enabled(vcpu) \
591 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
592 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
593 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
594
595 struct kvm_guestdbg_info_arch {
596 unsigned long cr0;
597 unsigned long cr9;
598 unsigned long cr10;
599 unsigned long cr11;
600 struct kvm_hw_bp_info_arch *hw_bp_info;
601 struct kvm_hw_wp_info_arch *hw_wp_info;
602 int nr_hw_bp;
603 int nr_hw_wp;
604 unsigned long last_bp;
605 };
606
607 struct kvm_vcpu_arch {
608 struct kvm_s390_sie_block *sie_block;
609 /* if vsie is active, currently executed shadow sie control block */
610 struct kvm_s390_sie_block *vsie_block;
611 unsigned int host_acrs[NUM_ACRS];
612 struct gs_cb *host_gscb;
613 struct fpu host_fpregs;
614 struct kvm_s390_local_interrupt local_int;
615 struct hrtimer ckc_timer;
616 struct kvm_s390_pgm_info pgm;
617 struct gmap *gmap;
618 /* backup location for the currently enabled gmap when scheduled out */
619 struct gmap *enabled_gmap;
620 struct kvm_guestdbg_info_arch guestdbg;
621 unsigned long pfault_token;
622 unsigned long pfault_select;
623 unsigned long pfault_compare;
624 bool cputm_enabled;
625 /*
626 * The seqcount protects updates to cputm_start and sie_block.cputm,
627 * this way we can have non-blocking reads with consistent values.
628 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
629 * values and to start/stop/enable/disable cpu timer accounting.
630 */
631 seqcount_t cputm_seqcount;
632 __u64 cputm_start;
633 bool gs_enabled;
634 };
635
636 struct kvm_vm_stat {
637 ulong remote_tlb_flush;
638 };
639
640 struct kvm_arch_memory_slot {
641 };
642
643 struct s390_map_info {
644 struct list_head list;
645 __u64 guest_addr;
646 __u64 addr;
647 struct page *page;
648 };
649
650 struct s390_io_adapter {
651 unsigned int id;
652 int isc;
653 bool maskable;
654 bool masked;
655 bool swap;
656 bool suppressible;
657 struct rw_semaphore maps_lock;
658 struct list_head maps;
659 atomic_t nr_maps;
660 };
661
662 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
663 #define MAX_S390_ADAPTER_MAPS 256
664
665 /* maximum size of facilities and facility mask is 2k bytes */
666 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
667 #define S390_ARCH_FAC_LIST_SIZE_U64 \
668 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
669 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
670 #define S390_ARCH_FAC_MASK_SIZE_U64 \
671 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
672
673 struct kvm_s390_cpu_model {
674 /* facility mask supported by kvm & hosting machine */
675 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
676 /* facility list requested by guest (in dma page) */
677 __u64 *fac_list;
678 u64 cpuid;
679 unsigned short ibc;
680 };
681
682 struct kvm_s390_crypto {
683 struct kvm_s390_crypto_cb *crycb;
684 __u32 crycbd;
685 __u8 aes_kw;
686 __u8 dea_kw;
687 };
688
689 struct kvm_s390_crypto_cb {
690 __u8 reserved00[72]; /* 0x0000 */
691 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */
692 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */
693 __u8 reserved80[128]; /* 0x0080 */
694 };
695
696 /*
697 * sie_page2 has to be allocated as DMA because fac_list and crycb need
698 * 31bit addresses in the sie control block.
699 */
700 struct sie_page2 {
701 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */
702 struct kvm_s390_crypto_cb crycb; /* 0x0800 */
703 u8 reserved900[0x1000 - 0x900]; /* 0x0900 */
704 };
705
706 struct kvm_s390_vsie {
707 struct mutex mutex;
708 struct radix_tree_root addr_to_page;
709 int page_count;
710 int next;
711 struct page *pages[KVM_MAX_VCPUS];
712 };
713
714 struct kvm_s390_migration_state {
715 unsigned long bitmap_size; /* in bits (number of guest pages) */
716 atomic64_t dirty_pages; /* number of dirty pages */
717 unsigned long *pgste_bitmap;
718 };
719
720 struct kvm_arch{
721 void *sca;
722 int use_esca;
723 rwlock_t sca_lock;
724 debug_info_t *dbf;
725 struct kvm_s390_float_interrupt float_int;
726 struct kvm_device *flic;
727 struct gmap *gmap;
728 unsigned long mem_limit;
729 int css_support;
730 int use_irqchip;
731 int use_cmma;
732 int user_cpu_state_ctrl;
733 int user_sigp;
734 int user_stsi;
735 int user_instr0;
736 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
737 wait_queue_head_t ipte_wq;
738 int ipte_lock_count;
739 struct mutex ipte_mutex;
740 struct ratelimit_state sthyi_limit;
741 spinlock_t start_stop_lock;
742 struct sie_page2 *sie_page2;
743 struct kvm_s390_cpu_model model;
744 struct kvm_s390_crypto crypto;
745 struct kvm_s390_vsie vsie;
746 u8 epdx;
747 u64 epoch;
748 struct kvm_s390_migration_state *migration_state;
749 /* subset of available cpu features enabled by user space */
750 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
751 };
752
753 #define KVM_HVA_ERR_BAD (-1UL)
754 #define KVM_HVA_ERR_RO_BAD (-2UL)
755
kvm_is_error_hva(unsigned long addr)756 static inline bool kvm_is_error_hva(unsigned long addr)
757 {
758 return IS_ERR_VALUE(addr);
759 }
760
761 #define ASYNC_PF_PER_VCPU 64
762 struct kvm_arch_async_pf {
763 unsigned long pfault_token;
764 };
765
766 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
767
768 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
769 struct kvm_async_pf *work);
770
771 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
772 struct kvm_async_pf *work);
773
774 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
775 struct kvm_async_pf *work);
776
777 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
778 extern char sie_exit;
779
kvm_arch_hardware_disable(void)780 static inline void kvm_arch_hardware_disable(void) {}
kvm_arch_check_processor_compat(void * rtn)781 static inline void kvm_arch_check_processor_compat(void *rtn) {}
kvm_arch_sync_events(struct kvm * kvm)782 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
kvm_arch_vcpu_uninit(struct kvm_vcpu * vcpu)783 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
kvm_arch_sched_in(struct kvm_vcpu * vcpu,int cpu)784 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)785 static inline void kvm_arch_free_memslot(struct kvm *kvm,
786 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
kvm_arch_memslots_updated(struct kvm * kvm,u64 gen)787 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
kvm_arch_flush_shadow_all(struct kvm * kvm)788 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
kvm_arch_flush_shadow_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)789 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
790 struct kvm_memory_slot *slot) {}
kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)791 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)792 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
793
794 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
795
796 #endif
797