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_host.h>
19 #include <linux/kvm.h>
20 #include <linux/seqlock.h>
21 #include <linux/module.h>
22 #include <asm/debug.h>
23 #include <asm/cpu.h>
24 #include <asm/fpu/api.h>
25 #include <asm/isc.h>
26 #include <asm/guarded_storage.h>
27
28 #define KVM_S390_BSCA_CPU_SLOTS 64
29 #define KVM_S390_ESCA_CPU_SLOTS 248
30 #define KVM_MAX_VCPUS 255
31
32 /*
33 * These seem to be used for allocating ->chip in the routing table, which we
34 * don't use. 1 is as small as we can get to reduce the needed memory. If we
35 * need to look at ->chip later on, we'll need to revisit this.
36 */
37 #define KVM_NR_IRQCHIPS 1
38 #define KVM_IRQCHIP_NUM_PINS 1
39 #define KVM_HALT_POLL_NS_DEFAULT 50000
40
41 /* s390-specific vcpu->requests bit members */
42 #define KVM_REQ_ENABLE_IBS KVM_ARCH_REQ(0)
43 #define KVM_REQ_DISABLE_IBS KVM_ARCH_REQ(1)
44 #define KVM_REQ_ICPT_OPEREXC KVM_ARCH_REQ(2)
45 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
46 #define KVM_REQ_STOP_MIGRATION KVM_ARCH_REQ(4)
47 #define KVM_REQ_VSIE_RESTART KVM_ARCH_REQ(5)
48 #define KVM_REQ_REFRESH_GUEST_PREFIX \
49 KVM_ARCH_REQ_FLAGS(6, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
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 CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
127 CR0_MEASUREMENT_ALERT_SUBMASK)
128 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
129 CR14_EXTERNAL_DAMAGE_SUBMASK)
130
131 #define SIDAD_SIZE_MASK 0xff
132 #define sida_origin(sie_block) \
133 ((sie_block)->sidad & PAGE_MASK)
134 #define sida_size(sie_block) \
135 ((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE)
136
137 #define CPUSTAT_STOPPED 0x80000000
138 #define CPUSTAT_WAIT 0x10000000
139 #define CPUSTAT_ECALL_PEND 0x08000000
140 #define CPUSTAT_STOP_INT 0x04000000
141 #define CPUSTAT_IO_INT 0x02000000
142 #define CPUSTAT_EXT_INT 0x01000000
143 #define CPUSTAT_RUNNING 0x00800000
144 #define CPUSTAT_RETAINED 0x00400000
145 #define CPUSTAT_TIMING_SUB 0x00020000
146 #define CPUSTAT_SIE_SUB 0x00010000
147 #define CPUSTAT_RRF 0x00008000
148 #define CPUSTAT_SLSV 0x00004000
149 #define CPUSTAT_SLSR 0x00002000
150 #define CPUSTAT_ZARCH 0x00000800
151 #define CPUSTAT_MCDS 0x00000100
152 #define CPUSTAT_KSS 0x00000200
153 #define CPUSTAT_SM 0x00000080
154 #define CPUSTAT_IBS 0x00000040
155 #define CPUSTAT_GED2 0x00000010
156 #define CPUSTAT_G 0x00000008
157 #define CPUSTAT_GED 0x00000004
158 #define CPUSTAT_J 0x00000002
159 #define CPUSTAT_P 0x00000001
160
161 struct kvm_s390_sie_block {
162 atomic_t cpuflags; /* 0x0000 */
163 __u32 : 1; /* 0x0004 */
164 __u32 prefix : 18;
165 __u32 : 1;
166 __u32 ibc : 12;
167 __u8 reserved08[4]; /* 0x0008 */
168 #define PROG_IN_SIE (1<<0)
169 __u32 prog0c; /* 0x000c */
170 union {
171 __u8 reserved10[16]; /* 0x0010 */
172 struct {
173 __u64 pv_handle_cpu;
174 __u64 pv_handle_config;
175 };
176 };
177 #define PROG_BLOCK_SIE (1<<0)
178 #define PROG_REQUEST (1<<1)
179 atomic_t prog20; /* 0x0020 */
180 __u8 reserved24[4]; /* 0x0024 */
181 __u64 cputm; /* 0x0028 */
182 __u64 ckc; /* 0x0030 */
183 __u64 epoch; /* 0x0038 */
184 __u32 svcc; /* 0x0040 */
185 #define LCTL_CR0 0x8000
186 #define LCTL_CR6 0x0200
187 #define LCTL_CR9 0x0040
188 #define LCTL_CR10 0x0020
189 #define LCTL_CR11 0x0010
190 #define LCTL_CR14 0x0002
191 __u16 lctl; /* 0x0044 */
192 __s16 icpua; /* 0x0046 */
193 #define ICTL_OPEREXC 0x80000000
194 #define ICTL_PINT 0x20000000
195 #define ICTL_LPSW 0x00400000
196 #define ICTL_STCTL 0x00040000
197 #define ICTL_ISKE 0x00004000
198 #define ICTL_SSKE 0x00002000
199 #define ICTL_RRBE 0x00001000
200 #define ICTL_TPROT 0x00000200
201 __u32 ictl; /* 0x0048 */
202 #define ECA_CEI 0x80000000
203 #define ECA_IB 0x40000000
204 #define ECA_SIGPI 0x10000000
205 #define ECA_MVPGI 0x01000000
206 #define ECA_AIV 0x00200000
207 #define ECA_VX 0x00020000
208 #define ECA_PROTEXCI 0x00002000
209 #define ECA_APIE 0x00000008
210 #define ECA_SII 0x00000001
211 __u32 eca; /* 0x004c */
212 #define ICPT_INST 0x04
213 #define ICPT_PROGI 0x08
214 #define ICPT_INSTPROGI 0x0C
215 #define ICPT_EXTREQ 0x10
216 #define ICPT_EXTINT 0x14
217 #define ICPT_IOREQ 0x18
218 #define ICPT_WAIT 0x1c
219 #define ICPT_VALIDITY 0x20
220 #define ICPT_STOP 0x28
221 #define ICPT_OPEREXC 0x2C
222 #define ICPT_PARTEXEC 0x38
223 #define ICPT_IOINST 0x40
224 #define ICPT_KSS 0x5c
225 #define ICPT_MCHKREQ 0x60
226 #define ICPT_INT_ENABLE 0x64
227 #define ICPT_PV_INSTR 0x68
228 #define ICPT_PV_NOTIFY 0x6c
229 #define ICPT_PV_PREF 0x70
230 __u8 icptcode; /* 0x0050 */
231 __u8 icptstatus; /* 0x0051 */
232 __u16 ihcpu; /* 0x0052 */
233 __u8 reserved54; /* 0x0054 */
234 #define IICTL_CODE_NONE 0x00
235 #define IICTL_CODE_MCHK 0x01
236 #define IICTL_CODE_EXT 0x02
237 #define IICTL_CODE_IO 0x03
238 #define IICTL_CODE_RESTART 0x04
239 #define IICTL_CODE_SPECIFICATION 0x10
240 #define IICTL_CODE_OPERAND 0x11
241 __u8 iictl; /* 0x0055 */
242 __u16 ipa; /* 0x0056 */
243 __u32 ipb; /* 0x0058 */
244 __u32 scaoh; /* 0x005c */
245 #define FPF_BPBC 0x20
246 __u8 fpf; /* 0x0060 */
247 #define ECB_GS 0x40
248 #define ECB_TE 0x10
249 #define ECB_SPECI 0x08
250 #define ECB_SRSI 0x04
251 #define ECB_HOSTPROTINT 0x02
252 __u8 ecb; /* 0x0061 */
253 #define ECB2_CMMA 0x80
254 #define ECB2_IEP 0x20
255 #define ECB2_PFMFI 0x08
256 #define ECB2_ESCA 0x04
257 __u8 ecb2; /* 0x0062 */
258 #define ECB3_DEA 0x08
259 #define ECB3_AES 0x04
260 #define ECB3_RI 0x01
261 __u8 ecb3; /* 0x0063 */
262 __u32 scaol; /* 0x0064 */
263 __u8 sdf; /* 0x0068 */
264 __u8 epdx; /* 0x0069 */
265 __u8 cpnc; /* 0x006a */
266 __u8 reserved6b; /* 0x006b */
267 __u32 todpr; /* 0x006c */
268 #define GISA_FORMAT1 0x00000001
269 __u32 gd; /* 0x0070 */
270 __u8 reserved74[12]; /* 0x0074 */
271 __u64 mso; /* 0x0080 */
272 __u64 msl; /* 0x0088 */
273 psw_t gpsw; /* 0x0090 */
274 __u64 gg14; /* 0x00a0 */
275 __u64 gg15; /* 0x00a8 */
276 __u8 reservedb0[8]; /* 0x00b0 */
277 #define HPID_KVM 0x4
278 #define HPID_VSIE 0x5
279 __u8 hpid; /* 0x00b8 */
280 __u8 reservedb9[7]; /* 0x00b9 */
281 union {
282 struct {
283 __u32 eiparams; /* 0x00c0 */
284 __u16 extcpuaddr; /* 0x00c4 */
285 __u16 eic; /* 0x00c6 */
286 };
287 __u64 mcic; /* 0x00c0 */
288 } __packed;
289 __u32 reservedc8; /* 0x00c8 */
290 union {
291 struct {
292 __u16 pgmilc; /* 0x00cc */
293 __u16 iprcc; /* 0x00ce */
294 };
295 __u32 edc; /* 0x00cc */
296 } __packed;
297 union {
298 struct {
299 __u32 dxc; /* 0x00d0 */
300 __u16 mcn; /* 0x00d4 */
301 __u8 perc; /* 0x00d6 */
302 __u8 peratmid; /* 0x00d7 */
303 };
304 __u64 faddr; /* 0x00d0 */
305 } __packed;
306 __u64 peraddr; /* 0x00d8 */
307 __u8 eai; /* 0x00e0 */
308 __u8 peraid; /* 0x00e1 */
309 __u8 oai; /* 0x00e2 */
310 __u8 armid; /* 0x00e3 */
311 __u8 reservede4[4]; /* 0x00e4 */
312 union {
313 __u64 tecmc; /* 0x00e8 */
314 struct {
315 __u16 subchannel_id; /* 0x00e8 */
316 __u16 subchannel_nr; /* 0x00ea */
317 __u32 io_int_parm; /* 0x00ec */
318 __u32 io_int_word; /* 0x00f0 */
319 };
320 } __packed;
321 __u8 reservedf4[8]; /* 0x00f4 */
322 #define CRYCB_FORMAT_MASK 0x00000003
323 #define CRYCB_FORMAT0 0x00000000
324 #define CRYCB_FORMAT1 0x00000001
325 #define CRYCB_FORMAT2 0x00000003
326 __u32 crycbd; /* 0x00fc */
327 __u64 gcr[16]; /* 0x0100 */
328 union {
329 __u64 gbea; /* 0x0180 */
330 __u64 sidad;
331 };
332 __u8 reserved188[8]; /* 0x0188 */
333 __u64 sdnxo; /* 0x0190 */
334 __u8 reserved198[8]; /* 0x0198 */
335 __u32 fac; /* 0x01a0 */
336 __u8 reserved1a4[20]; /* 0x01a4 */
337 __u64 cbrlo; /* 0x01b8 */
338 __u8 reserved1c0[8]; /* 0x01c0 */
339 #define ECD_HOSTREGMGMT 0x20000000
340 #define ECD_MEF 0x08000000
341 #define ECD_ETOKENF 0x02000000
342 #define ECD_ECC 0x00200000
343 __u32 ecd; /* 0x01c8 */
344 __u8 reserved1cc[18]; /* 0x01cc */
345 __u64 pp; /* 0x01de */
346 __u8 reserved1e6[2]; /* 0x01e6 */
347 __u64 itdba; /* 0x01e8 */
348 __u64 riccbd; /* 0x01f0 */
349 __u64 gvrd; /* 0x01f8 */
350 } __packed __aligned(512);
351
352 struct kvm_s390_itdb {
353 __u8 data[256];
354 };
355
356 struct sie_page {
357 struct kvm_s390_sie_block sie_block;
358 struct mcck_volatile_info mcck_info; /* 0x0200 */
359 __u8 reserved218[360]; /* 0x0218 */
360 __u64 pv_grregs[16]; /* 0x0380 */
361 __u8 reserved400[512]; /* 0x0400 */
362 struct kvm_s390_itdb itdb; /* 0x0600 */
363 __u8 reserved700[2304]; /* 0x0700 */
364 };
365
366 struct kvm_vcpu_stat {
367 struct kvm_vcpu_stat_generic generic;
368 u64 exit_userspace;
369 u64 exit_null;
370 u64 exit_external_request;
371 u64 exit_io_request;
372 u64 exit_external_interrupt;
373 u64 exit_stop_request;
374 u64 exit_validity;
375 u64 exit_instruction;
376 u64 exit_pei;
377 u64 halt_no_poll_steal;
378 u64 instruction_lctl;
379 u64 instruction_lctlg;
380 u64 instruction_stctl;
381 u64 instruction_stctg;
382 u64 exit_program_interruption;
383 u64 exit_instr_and_program;
384 u64 exit_operation_exception;
385 u64 deliver_ckc;
386 u64 deliver_cputm;
387 u64 deliver_external_call;
388 u64 deliver_emergency_signal;
389 u64 deliver_service_signal;
390 u64 deliver_virtio;
391 u64 deliver_stop_signal;
392 u64 deliver_prefix_signal;
393 u64 deliver_restart_signal;
394 u64 deliver_program;
395 u64 deliver_io;
396 u64 deliver_machine_check;
397 u64 exit_wait_state;
398 u64 inject_ckc;
399 u64 inject_cputm;
400 u64 inject_external_call;
401 u64 inject_emergency_signal;
402 u64 inject_mchk;
403 u64 inject_pfault_init;
404 u64 inject_program;
405 u64 inject_restart;
406 u64 inject_set_prefix;
407 u64 inject_stop_signal;
408 u64 instruction_epsw;
409 u64 instruction_gs;
410 u64 instruction_io_other;
411 u64 instruction_lpsw;
412 u64 instruction_lpswe;
413 u64 instruction_pfmf;
414 u64 instruction_ptff;
415 u64 instruction_sck;
416 u64 instruction_sckpf;
417 u64 instruction_stidp;
418 u64 instruction_spx;
419 u64 instruction_stpx;
420 u64 instruction_stap;
421 u64 instruction_iske;
422 u64 instruction_ri;
423 u64 instruction_rrbe;
424 u64 instruction_sske;
425 u64 instruction_ipte_interlock;
426 u64 instruction_stsi;
427 u64 instruction_stfl;
428 u64 instruction_tb;
429 u64 instruction_tpi;
430 u64 instruction_tprot;
431 u64 instruction_tsch;
432 u64 instruction_sie;
433 u64 instruction_essa;
434 u64 instruction_sthyi;
435 u64 instruction_sigp_sense;
436 u64 instruction_sigp_sense_running;
437 u64 instruction_sigp_external_call;
438 u64 instruction_sigp_emergency;
439 u64 instruction_sigp_cond_emergency;
440 u64 instruction_sigp_start;
441 u64 instruction_sigp_stop;
442 u64 instruction_sigp_stop_store_status;
443 u64 instruction_sigp_store_status;
444 u64 instruction_sigp_store_adtl_status;
445 u64 instruction_sigp_arch;
446 u64 instruction_sigp_prefix;
447 u64 instruction_sigp_restart;
448 u64 instruction_sigp_init_cpu_reset;
449 u64 instruction_sigp_cpu_reset;
450 u64 instruction_sigp_unknown;
451 u64 instruction_diagnose_10;
452 u64 instruction_diagnose_44;
453 u64 instruction_diagnose_9c;
454 u64 diag_9c_ignored;
455 u64 diag_9c_forward;
456 u64 instruction_diagnose_258;
457 u64 instruction_diagnose_308;
458 u64 instruction_diagnose_500;
459 u64 instruction_diagnose_other;
460 u64 pfault_sync;
461 };
462
463 #define PGM_OPERATION 0x01
464 #define PGM_PRIVILEGED_OP 0x02
465 #define PGM_EXECUTE 0x03
466 #define PGM_PROTECTION 0x04
467 #define PGM_ADDRESSING 0x05
468 #define PGM_SPECIFICATION 0x06
469 #define PGM_DATA 0x07
470 #define PGM_FIXED_POINT_OVERFLOW 0x08
471 #define PGM_FIXED_POINT_DIVIDE 0x09
472 #define PGM_DECIMAL_OVERFLOW 0x0a
473 #define PGM_DECIMAL_DIVIDE 0x0b
474 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c
475 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d
476 #define PGM_HFP_SIGNIFICANCE 0x0e
477 #define PGM_HFP_DIVIDE 0x0f
478 #define PGM_SEGMENT_TRANSLATION 0x10
479 #define PGM_PAGE_TRANSLATION 0x11
480 #define PGM_TRANSLATION_SPEC 0x12
481 #define PGM_SPECIAL_OPERATION 0x13
482 #define PGM_OPERAND 0x15
483 #define PGM_TRACE_TABEL 0x16
484 #define PGM_VECTOR_PROCESSING 0x1b
485 #define PGM_SPACE_SWITCH 0x1c
486 #define PGM_HFP_SQUARE_ROOT 0x1d
487 #define PGM_PC_TRANSLATION_SPEC 0x1f
488 #define PGM_AFX_TRANSLATION 0x20
489 #define PGM_ASX_TRANSLATION 0x21
490 #define PGM_LX_TRANSLATION 0x22
491 #define PGM_EX_TRANSLATION 0x23
492 #define PGM_PRIMARY_AUTHORITY 0x24
493 #define PGM_SECONDARY_AUTHORITY 0x25
494 #define PGM_LFX_TRANSLATION 0x26
495 #define PGM_LSX_TRANSLATION 0x27
496 #define PGM_ALET_SPECIFICATION 0x28
497 #define PGM_ALEN_TRANSLATION 0x29
498 #define PGM_ALE_SEQUENCE 0x2a
499 #define PGM_ASTE_VALIDITY 0x2b
500 #define PGM_ASTE_SEQUENCE 0x2c
501 #define PGM_EXTENDED_AUTHORITY 0x2d
502 #define PGM_LSTE_SEQUENCE 0x2e
503 #define PGM_ASTE_INSTANCE 0x2f
504 #define PGM_STACK_FULL 0x30
505 #define PGM_STACK_EMPTY 0x31
506 #define PGM_STACK_SPECIFICATION 0x32
507 #define PGM_STACK_TYPE 0x33
508 #define PGM_STACK_OPERATION 0x34
509 #define PGM_ASCE_TYPE 0x38
510 #define PGM_REGION_FIRST_TRANS 0x39
511 #define PGM_REGION_SECOND_TRANS 0x3a
512 #define PGM_REGION_THIRD_TRANS 0x3b
513 #define PGM_MONITOR 0x40
514 #define PGM_PER 0x80
515 #define PGM_CRYPTO_OPERATION 0x119
516
517 /* irq types in ascend order of priorities */
518 enum irq_types {
519 IRQ_PEND_SET_PREFIX = 0,
520 IRQ_PEND_RESTART,
521 IRQ_PEND_SIGP_STOP,
522 IRQ_PEND_IO_ISC_7,
523 IRQ_PEND_IO_ISC_6,
524 IRQ_PEND_IO_ISC_5,
525 IRQ_PEND_IO_ISC_4,
526 IRQ_PEND_IO_ISC_3,
527 IRQ_PEND_IO_ISC_2,
528 IRQ_PEND_IO_ISC_1,
529 IRQ_PEND_IO_ISC_0,
530 IRQ_PEND_VIRTIO,
531 IRQ_PEND_PFAULT_DONE,
532 IRQ_PEND_PFAULT_INIT,
533 IRQ_PEND_EXT_HOST,
534 IRQ_PEND_EXT_SERVICE,
535 IRQ_PEND_EXT_SERVICE_EV,
536 IRQ_PEND_EXT_TIMING,
537 IRQ_PEND_EXT_CPU_TIMER,
538 IRQ_PEND_EXT_CLOCK_COMP,
539 IRQ_PEND_EXT_EXTERNAL,
540 IRQ_PEND_EXT_EMERGENCY,
541 IRQ_PEND_EXT_MALFUNC,
542 IRQ_PEND_EXT_IRQ_KEY,
543 IRQ_PEND_MCHK_REP,
544 IRQ_PEND_PROG,
545 IRQ_PEND_SVC,
546 IRQ_PEND_MCHK_EX,
547 IRQ_PEND_COUNT
548 };
549
550 /* We have 2M for virtio device descriptor pages. Smallest amount of
551 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
552 */
553 #define KVM_S390_MAX_VIRTIO_IRQS 87381
554
555 /*
556 * Repressible (non-floating) machine check interrupts
557 * subclass bits in MCIC
558 */
559 #define MCHK_EXTD_BIT 58
560 #define MCHK_DEGR_BIT 56
561 #define MCHK_WARN_BIT 55
562 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
563 (1UL << MCHK_EXTD_BIT) | \
564 (1UL << MCHK_WARN_BIT))
565
566 /* Exigent machine check interrupts subclass bits in MCIC */
567 #define MCHK_SD_BIT 63
568 #define MCHK_PD_BIT 62
569 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
570
571 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \
572 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
573 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \
574 (1UL << IRQ_PEND_EXT_MALFUNC) | \
575 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
576 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
577 (1UL << IRQ_PEND_EXT_TIMING) | \
578 (1UL << IRQ_PEND_EXT_HOST) | \
579 (1UL << IRQ_PEND_EXT_SERVICE) | \
580 (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
581 (1UL << IRQ_PEND_VIRTIO) | \
582 (1UL << IRQ_PEND_PFAULT_INIT) | \
583 (1UL << IRQ_PEND_PFAULT_DONE))
584
585 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
586 (1UL << IRQ_PEND_IO_ISC_1) | \
587 (1UL << IRQ_PEND_IO_ISC_2) | \
588 (1UL << IRQ_PEND_IO_ISC_3) | \
589 (1UL << IRQ_PEND_IO_ISC_4) | \
590 (1UL << IRQ_PEND_IO_ISC_5) | \
591 (1UL << IRQ_PEND_IO_ISC_6) | \
592 (1UL << IRQ_PEND_IO_ISC_7))
593
594 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
595 (1UL << IRQ_PEND_MCHK_EX))
596
597 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER) | \
598 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
599 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
600 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
601 (1UL << IRQ_PEND_EXT_SERVICE) | \
602 (1UL << IRQ_PEND_EXT_SERVICE_EV))
603
604 struct kvm_s390_interrupt_info {
605 struct list_head list;
606 u64 type;
607 union {
608 struct kvm_s390_io_info io;
609 struct kvm_s390_ext_info ext;
610 struct kvm_s390_pgm_info pgm;
611 struct kvm_s390_emerg_info emerg;
612 struct kvm_s390_extcall_info extcall;
613 struct kvm_s390_prefix_info prefix;
614 struct kvm_s390_stop_info stop;
615 struct kvm_s390_mchk_info mchk;
616 };
617 };
618
619 struct kvm_s390_irq_payload {
620 struct kvm_s390_io_info io;
621 struct kvm_s390_ext_info ext;
622 struct kvm_s390_pgm_info pgm;
623 struct kvm_s390_emerg_info emerg;
624 struct kvm_s390_extcall_info extcall;
625 struct kvm_s390_prefix_info prefix;
626 struct kvm_s390_stop_info stop;
627 struct kvm_s390_mchk_info mchk;
628 };
629
630 struct kvm_s390_local_interrupt {
631 spinlock_t lock;
632 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
633 struct kvm_s390_irq_payload irq;
634 unsigned long pending_irqs;
635 };
636
637 #define FIRQ_LIST_IO_ISC_0 0
638 #define FIRQ_LIST_IO_ISC_1 1
639 #define FIRQ_LIST_IO_ISC_2 2
640 #define FIRQ_LIST_IO_ISC_3 3
641 #define FIRQ_LIST_IO_ISC_4 4
642 #define FIRQ_LIST_IO_ISC_5 5
643 #define FIRQ_LIST_IO_ISC_6 6
644 #define FIRQ_LIST_IO_ISC_7 7
645 #define FIRQ_LIST_PFAULT 8
646 #define FIRQ_LIST_VIRTIO 9
647 #define FIRQ_LIST_COUNT 10
648 #define FIRQ_CNTR_IO 0
649 #define FIRQ_CNTR_SERVICE 1
650 #define FIRQ_CNTR_VIRTIO 2
651 #define FIRQ_CNTR_PFAULT 3
652 #define FIRQ_MAX_COUNT 4
653
654 /* mask the AIS mode for a given ISC */
655 #define AIS_MODE_MASK(isc) (0x80 >> isc)
656
657 #define KVM_S390_AIS_MODE_ALL 0
658 #define KVM_S390_AIS_MODE_SINGLE 1
659
660 struct kvm_s390_float_interrupt {
661 unsigned long pending_irqs;
662 unsigned long masked_irqs;
663 spinlock_t lock;
664 struct list_head lists[FIRQ_LIST_COUNT];
665 int counters[FIRQ_MAX_COUNT];
666 struct kvm_s390_mchk_info mchk;
667 struct kvm_s390_ext_info srv_signal;
668 int next_rr_cpu;
669 struct mutex ais_lock;
670 u8 simm;
671 u8 nimm;
672 };
673
674 struct kvm_hw_wp_info_arch {
675 unsigned long addr;
676 unsigned long phys_addr;
677 int len;
678 char *old_data;
679 };
680
681 struct kvm_hw_bp_info_arch {
682 unsigned long addr;
683 int len;
684 };
685
686 /*
687 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
688 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
689 * arch/s390/include/uapi/asm/kvm.h
690 */
691 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
692
693 #define guestdbg_enabled(vcpu) \
694 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
695 #define guestdbg_sstep_enabled(vcpu) \
696 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
697 #define guestdbg_hw_bp_enabled(vcpu) \
698 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
699 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
700 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
701
702 #define KVM_GUESTDBG_VALID_MASK \
703 (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\
704 KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING)
705
706 struct kvm_guestdbg_info_arch {
707 unsigned long cr0;
708 unsigned long cr9;
709 unsigned long cr10;
710 unsigned long cr11;
711 struct kvm_hw_bp_info_arch *hw_bp_info;
712 struct kvm_hw_wp_info_arch *hw_wp_info;
713 int nr_hw_bp;
714 int nr_hw_wp;
715 unsigned long last_bp;
716 };
717
718 struct kvm_s390_pv_vcpu {
719 u64 handle;
720 unsigned long stor_base;
721 };
722
723 struct kvm_vcpu_arch {
724 struct kvm_s390_sie_block *sie_block;
725 /* if vsie is active, currently executed shadow sie control block */
726 struct kvm_s390_sie_block *vsie_block;
727 unsigned int host_acrs[NUM_ACRS];
728 struct gs_cb *host_gscb;
729 struct fpu host_fpregs;
730 struct kvm_s390_local_interrupt local_int;
731 struct hrtimer ckc_timer;
732 struct kvm_s390_pgm_info pgm;
733 struct gmap *gmap;
734 /* backup location for the currently enabled gmap when scheduled out */
735 struct gmap *enabled_gmap;
736 struct kvm_guestdbg_info_arch guestdbg;
737 unsigned long pfault_token;
738 unsigned long pfault_select;
739 unsigned long pfault_compare;
740 bool cputm_enabled;
741 /*
742 * The seqcount protects updates to cputm_start and sie_block.cputm,
743 * this way we can have non-blocking reads with consistent values.
744 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
745 * values and to start/stop/enable/disable cpu timer accounting.
746 */
747 seqcount_t cputm_seqcount;
748 __u64 cputm_start;
749 bool gs_enabled;
750 bool skey_enabled;
751 struct kvm_s390_pv_vcpu pv;
752 union diag318_info diag318_info;
753 };
754
755 struct kvm_vm_stat {
756 struct kvm_vm_stat_generic generic;
757 u64 inject_io;
758 u64 inject_float_mchk;
759 u64 inject_pfault_done;
760 u64 inject_service_signal;
761 u64 inject_virtio;
762 };
763
764 struct kvm_arch_memory_slot {
765 };
766
767 struct s390_map_info {
768 struct list_head list;
769 __u64 guest_addr;
770 __u64 addr;
771 struct page *page;
772 };
773
774 struct s390_io_adapter {
775 unsigned int id;
776 int isc;
777 bool maskable;
778 bool masked;
779 bool swap;
780 bool suppressible;
781 };
782
783 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
784 #define MAX_S390_ADAPTER_MAPS 256
785
786 /* maximum size of facilities and facility mask is 2k bytes */
787 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
788 #define S390_ARCH_FAC_LIST_SIZE_U64 \
789 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
790 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
791 #define S390_ARCH_FAC_MASK_SIZE_U64 \
792 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
793
794 struct kvm_s390_cpu_model {
795 /* facility mask supported by kvm & hosting machine */
796 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
797 struct kvm_s390_vm_cpu_subfunc subfuncs;
798 /* facility list requested by guest (in dma page) */
799 __u64 *fac_list;
800 u64 cpuid;
801 unsigned short ibc;
802 };
803
804 typedef int (*crypto_hook)(struct kvm_vcpu *vcpu);
805
806 struct kvm_s390_crypto {
807 struct kvm_s390_crypto_cb *crycb;
808 struct rw_semaphore pqap_hook_rwsem;
809 crypto_hook *pqap_hook;
810 __u32 crycbd;
811 __u8 aes_kw;
812 __u8 dea_kw;
813 __u8 apie;
814 };
815
816 #define APCB0_MASK_SIZE 1
817 struct kvm_s390_apcb0 {
818 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */
819 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */
820 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */
821 __u64 reserved18; /* 0x0018 */
822 };
823
824 #define APCB1_MASK_SIZE 4
825 struct kvm_s390_apcb1 {
826 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */
827 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */
828 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */
829 __u64 reserved60[4]; /* 0x0060 */
830 };
831
832 struct kvm_s390_crypto_cb {
833 struct kvm_s390_apcb0 apcb0; /* 0x0000 */
834 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */
835 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */
836 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */
837 struct kvm_s390_apcb1 apcb1; /* 0x0080 */
838 };
839
840 struct kvm_s390_gisa {
841 union {
842 struct { /* common to all formats */
843 u32 next_alert;
844 u8 ipm;
845 u8 reserved01[2];
846 u8 iam;
847 };
848 struct { /* format 0 */
849 u32 next_alert;
850 u8 ipm;
851 u8 reserved01;
852 u8 : 6;
853 u8 g : 1;
854 u8 c : 1;
855 u8 iam;
856 u8 reserved02[4];
857 u32 airq_count;
858 } g0;
859 struct { /* format 1 */
860 u32 next_alert;
861 u8 ipm;
862 u8 simm;
863 u8 nimm;
864 u8 iam;
865 u8 aism[8];
866 u8 : 6;
867 u8 g : 1;
868 u8 c : 1;
869 u8 reserved03[11];
870 u32 airq_count;
871 } g1;
872 struct {
873 u64 word[4];
874 } u64;
875 };
876 };
877
878 struct kvm_s390_gib {
879 u32 alert_list_origin;
880 u32 reserved01;
881 u8:5;
882 u8 nisc:3;
883 u8 reserved03[3];
884 u32 reserved04[5];
885 };
886
887 /*
888 * sie_page2 has to be allocated as DMA because fac_list, crycb and
889 * gisa need 31bit addresses in the sie control block.
890 */
891 struct sie_page2 {
892 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */
893 struct kvm_s390_crypto_cb crycb; /* 0x0800 */
894 struct kvm_s390_gisa gisa; /* 0x0900 */
895 struct kvm *kvm; /* 0x0920 */
896 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */
897 };
898
899 struct kvm_s390_vsie {
900 struct mutex mutex;
901 struct radix_tree_root addr_to_page;
902 int page_count;
903 int next;
904 struct page *pages[KVM_MAX_VCPUS];
905 };
906
907 struct kvm_s390_gisa_iam {
908 u8 mask;
909 spinlock_t ref_lock;
910 u32 ref_count[MAX_ISC + 1];
911 };
912
913 struct kvm_s390_gisa_interrupt {
914 struct kvm_s390_gisa *origin;
915 struct kvm_s390_gisa_iam alert;
916 struct hrtimer timer;
917 u64 expires;
918 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
919 };
920
921 struct kvm_s390_pv {
922 u64 handle;
923 u64 guest_len;
924 unsigned long stor_base;
925 void *stor_var;
926 };
927
928 struct kvm_arch{
929 void *sca;
930 int use_esca;
931 rwlock_t sca_lock;
932 debug_info_t *dbf;
933 struct kvm_s390_float_interrupt float_int;
934 struct kvm_device *flic;
935 struct gmap *gmap;
936 unsigned long mem_limit;
937 int css_support;
938 int use_irqchip;
939 int use_cmma;
940 int use_pfmfi;
941 int use_skf;
942 int user_cpu_state_ctrl;
943 int user_sigp;
944 int user_stsi;
945 int user_instr0;
946 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
947 wait_queue_head_t ipte_wq;
948 int ipte_lock_count;
949 struct mutex ipte_mutex;
950 spinlock_t start_stop_lock;
951 struct sie_page2 *sie_page2;
952 struct kvm_s390_cpu_model model;
953 struct kvm_s390_crypto crypto;
954 struct kvm_s390_vsie vsie;
955 u8 epdx;
956 u64 epoch;
957 int migration_mode;
958 atomic64_t cmma_dirty_pages;
959 /* subset of available cpu features enabled by user space */
960 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
961 /* indexed by vcpu_idx */
962 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
963 struct kvm_s390_gisa_interrupt gisa_int;
964 struct kvm_s390_pv pv;
965 };
966
967 #define KVM_HVA_ERR_BAD (-1UL)
968 #define KVM_HVA_ERR_RO_BAD (-2UL)
969
kvm_is_error_hva(unsigned long addr)970 static inline bool kvm_is_error_hva(unsigned long addr)
971 {
972 return IS_ERR_VALUE(addr);
973 }
974
975 #define ASYNC_PF_PER_VCPU 64
976 struct kvm_arch_async_pf {
977 unsigned long pfault_token;
978 };
979
980 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
981
982 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
983 struct kvm_async_pf *work);
984
985 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
986 struct kvm_async_pf *work);
987
988 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
989 struct kvm_async_pf *work);
990
kvm_arch_async_page_present_queued(struct kvm_vcpu * vcpu)991 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
992
993 void kvm_arch_crypto_clear_masks(struct kvm *kvm);
994 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
995 unsigned long *aqm, unsigned long *adm);
996
997 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
998 extern char sie_exit;
999
1000 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
1001 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
1002
kvm_arch_hardware_disable(void)1003 static inline void kvm_arch_hardware_disable(void) {}
kvm_arch_sync_events(struct kvm * kvm)1004 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
kvm_arch_sched_in(struct kvm_vcpu * vcpu,int cpu)1005 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
kvm_arch_free_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)1006 static inline void kvm_arch_free_memslot(struct kvm *kvm,
1007 struct kvm_memory_slot *slot) {}
kvm_arch_memslots_updated(struct kvm * kvm,u64 gen)1008 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
kvm_arch_flush_shadow_all(struct kvm * kvm)1009 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
kvm_arch_flush_shadow_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)1010 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
1011 struct kvm_memory_slot *slot) {}
kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)1012 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)1013 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
1014
1015 #endif
1016