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 #define KVM_USER_MEM_SLOTS 32
32
33 /*
34 * These seem to be used for allocating ->chip in the routing table, which we
35 * don't use. 1 is as small as we can get to reduce the needed memory. If we
36 * need to look at ->chip later on, we'll need to revisit this.
37 */
38 #define KVM_NR_IRQCHIPS 1
39 #define KVM_IRQCHIP_NUM_PINS 1
40 #define KVM_HALT_POLL_NS_DEFAULT 50000
41
42 /* s390-specific vcpu->requests bit members */
43 #define KVM_REQ_ENABLE_IBS KVM_ARCH_REQ(0)
44 #define KVM_REQ_DISABLE_IBS KVM_ARCH_REQ(1)
45 #define KVM_REQ_ICPT_OPEREXC KVM_ARCH_REQ(2)
46 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
47 #define KVM_REQ_STOP_MIGRATION KVM_ARCH_REQ(4)
48 #define KVM_REQ_VSIE_RESTART KVM_ARCH_REQ(5)
49
50 #define SIGP_CTRL_C 0x80
51 #define SIGP_CTRL_SCN_MASK 0x3f
52
53 union bsca_sigp_ctrl {
54 __u8 value;
55 struct {
56 __u8 c : 1;
57 __u8 r : 1;
58 __u8 scn : 6;
59 };
60 };
61
62 union esca_sigp_ctrl {
63 __u16 value;
64 struct {
65 __u8 c : 1;
66 __u8 reserved: 7;
67 __u8 scn;
68 };
69 };
70
71 struct esca_entry {
72 union esca_sigp_ctrl sigp_ctrl;
73 __u16 reserved1[3];
74 __u64 sda;
75 __u64 reserved2[6];
76 };
77
78 struct bsca_entry {
79 __u8 reserved0;
80 union bsca_sigp_ctrl sigp_ctrl;
81 __u16 reserved[3];
82 __u64 sda;
83 __u64 reserved2[2];
84 };
85
86 union ipte_control {
87 unsigned long val;
88 struct {
89 unsigned long k : 1;
90 unsigned long kh : 31;
91 unsigned long kg : 32;
92 };
93 };
94
95 struct bsca_block {
96 union ipte_control ipte_control;
97 __u64 reserved[5];
98 __u64 mcn;
99 __u64 reserved2;
100 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
101 };
102
103 struct esca_block {
104 union ipte_control ipte_control;
105 __u64 reserved1[7];
106 __u64 mcn[4];
107 __u64 reserved2[20];
108 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
109 };
110
111 /*
112 * This struct is used to store some machine check info from lowcore
113 * for machine checks that happen while the guest is running.
114 * This info in host's lowcore might be overwritten by a second machine
115 * check from host when host is in the machine check's high-level handling.
116 * The size is 24 bytes.
117 */
118 struct mcck_volatile_info {
119 __u64 mcic;
120 __u64 failing_storage_address;
121 __u32 ext_damage_code;
122 __u32 reserved;
123 };
124
125 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
126 CR0_MEASUREMENT_ALERT_SUBMASK)
127 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
128 CR14_EXTERNAL_DAMAGE_SUBMASK)
129
130 #define SIDAD_SIZE_MASK 0xff
131 #define sida_origin(sie_block) \
132 ((sie_block)->sidad & PAGE_MASK)
133 #define sida_size(sie_block) \
134 ((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE)
135
136 #define CPUSTAT_STOPPED 0x80000000
137 #define CPUSTAT_WAIT 0x10000000
138 #define CPUSTAT_ECALL_PEND 0x08000000
139 #define CPUSTAT_STOP_INT 0x04000000
140 #define CPUSTAT_IO_INT 0x02000000
141 #define CPUSTAT_EXT_INT 0x01000000
142 #define CPUSTAT_RUNNING 0x00800000
143 #define CPUSTAT_RETAINED 0x00400000
144 #define CPUSTAT_TIMING_SUB 0x00020000
145 #define CPUSTAT_SIE_SUB 0x00010000
146 #define CPUSTAT_RRF 0x00008000
147 #define CPUSTAT_SLSV 0x00004000
148 #define CPUSTAT_SLSR 0x00002000
149 #define CPUSTAT_ZARCH 0x00000800
150 #define CPUSTAT_MCDS 0x00000100
151 #define CPUSTAT_KSS 0x00000200
152 #define CPUSTAT_SM 0x00000080
153 #define CPUSTAT_IBS 0x00000040
154 #define CPUSTAT_GED2 0x00000010
155 #define CPUSTAT_G 0x00000008
156 #define CPUSTAT_GED 0x00000004
157 #define CPUSTAT_J 0x00000002
158 #define CPUSTAT_P 0x00000001
159
160 struct kvm_s390_sie_block {
161 atomic_t cpuflags; /* 0x0000 */
162 __u32 : 1; /* 0x0004 */
163 __u32 prefix : 18;
164 __u32 : 1;
165 __u32 ibc : 12;
166 __u8 reserved08[4]; /* 0x0008 */
167 #define PROG_IN_SIE (1<<0)
168 __u32 prog0c; /* 0x000c */
169 union {
170 __u8 reserved10[16]; /* 0x0010 */
171 struct {
172 __u64 pv_handle_cpu;
173 __u64 pv_handle_config;
174 };
175 };
176 #define PROG_BLOCK_SIE (1<<0)
177 #define PROG_REQUEST (1<<1)
178 atomic_t prog20; /* 0x0020 */
179 __u8 reserved24[4]; /* 0x0024 */
180 __u64 cputm; /* 0x0028 */
181 __u64 ckc; /* 0x0030 */
182 __u64 epoch; /* 0x0038 */
183 __u32 svcc; /* 0x0040 */
184 #define LCTL_CR0 0x8000
185 #define LCTL_CR6 0x0200
186 #define LCTL_CR9 0x0040
187 #define LCTL_CR10 0x0020
188 #define LCTL_CR11 0x0010
189 #define LCTL_CR14 0x0002
190 __u16 lctl; /* 0x0044 */
191 __s16 icpua; /* 0x0046 */
192 #define ICTL_OPEREXC 0x80000000
193 #define ICTL_PINT 0x20000000
194 #define ICTL_LPSW 0x00400000
195 #define ICTL_STCTL 0x00040000
196 #define ICTL_ISKE 0x00004000
197 #define ICTL_SSKE 0x00002000
198 #define ICTL_RRBE 0x00001000
199 #define ICTL_TPROT 0x00000200
200 __u32 ictl; /* 0x0048 */
201 #define ECA_CEI 0x80000000
202 #define ECA_IB 0x40000000
203 #define ECA_SIGPI 0x10000000
204 #define ECA_MVPGI 0x01000000
205 #define ECA_AIV 0x00200000
206 #define ECA_VX 0x00020000
207 #define ECA_PROTEXCI 0x00002000
208 #define ECA_APIE 0x00000008
209 #define ECA_SII 0x00000001
210 __u32 eca; /* 0x004c */
211 #define ICPT_INST 0x04
212 #define ICPT_PROGI 0x08
213 #define ICPT_INSTPROGI 0x0C
214 #define ICPT_EXTREQ 0x10
215 #define ICPT_EXTINT 0x14
216 #define ICPT_IOREQ 0x18
217 #define ICPT_WAIT 0x1c
218 #define ICPT_VALIDITY 0x20
219 #define ICPT_STOP 0x28
220 #define ICPT_OPEREXC 0x2C
221 #define ICPT_PARTEXEC 0x38
222 #define ICPT_IOINST 0x40
223 #define ICPT_KSS 0x5c
224 #define ICPT_MCHKREQ 0x60
225 #define ICPT_INT_ENABLE 0x64
226 #define ICPT_PV_INSTR 0x68
227 #define ICPT_PV_NOTIFY 0x6c
228 #define ICPT_PV_PREF 0x70
229 __u8 icptcode; /* 0x0050 */
230 __u8 icptstatus; /* 0x0051 */
231 __u16 ihcpu; /* 0x0052 */
232 __u8 reserved54; /* 0x0054 */
233 #define IICTL_CODE_NONE 0x00
234 #define IICTL_CODE_MCHK 0x01
235 #define IICTL_CODE_EXT 0x02
236 #define IICTL_CODE_IO 0x03
237 #define IICTL_CODE_RESTART 0x04
238 #define IICTL_CODE_SPECIFICATION 0x10
239 #define IICTL_CODE_OPERAND 0x11
240 __u8 iictl; /* 0x0055 */
241 __u16 ipa; /* 0x0056 */
242 __u32 ipb; /* 0x0058 */
243 __u32 scaoh; /* 0x005c */
244 #define FPF_BPBC 0x20
245 __u8 fpf; /* 0x0060 */
246 #define ECB_GS 0x40
247 #define ECB_TE 0x10
248 #define ECB_SRSI 0x04
249 #define ECB_HOSTPROTINT 0x02
250 __u8 ecb; /* 0x0061 */
251 #define ECB2_CMMA 0x80
252 #define ECB2_IEP 0x20
253 #define ECB2_PFMFI 0x08
254 #define ECB2_ESCA 0x04
255 __u8 ecb2; /* 0x0062 */
256 #define ECB3_DEA 0x08
257 #define ECB3_AES 0x04
258 #define ECB3_RI 0x01
259 __u8 ecb3; /* 0x0063 */
260 __u32 scaol; /* 0x0064 */
261 __u8 sdf; /* 0x0068 */
262 __u8 epdx; /* 0x0069 */
263 __u8 cpnc; /* 0x006a */
264 __u8 reserved6b; /* 0x006b */
265 __u32 todpr; /* 0x006c */
266 #define GISA_FORMAT1 0x00000001
267 __u32 gd; /* 0x0070 */
268 __u8 reserved74[12]; /* 0x0074 */
269 __u64 mso; /* 0x0080 */
270 __u64 msl; /* 0x0088 */
271 psw_t gpsw; /* 0x0090 */
272 __u64 gg14; /* 0x00a0 */
273 __u64 gg15; /* 0x00a8 */
274 __u8 reservedb0[8]; /* 0x00b0 */
275 #define HPID_KVM 0x4
276 #define HPID_VSIE 0x5
277 __u8 hpid; /* 0x00b8 */
278 __u8 reservedb9[7]; /* 0x00b9 */
279 union {
280 struct {
281 __u32 eiparams; /* 0x00c0 */
282 __u16 extcpuaddr; /* 0x00c4 */
283 __u16 eic; /* 0x00c6 */
284 };
285 __u64 mcic; /* 0x00c0 */
286 } __packed;
287 __u32 reservedc8; /* 0x00c8 */
288 union {
289 struct {
290 __u16 pgmilc; /* 0x00cc */
291 __u16 iprcc; /* 0x00ce */
292 };
293 __u32 edc; /* 0x00cc */
294 } __packed;
295 union {
296 struct {
297 __u32 dxc; /* 0x00d0 */
298 __u16 mcn; /* 0x00d4 */
299 __u8 perc; /* 0x00d6 */
300 __u8 peratmid; /* 0x00d7 */
301 };
302 __u64 faddr; /* 0x00d0 */
303 } __packed;
304 __u64 peraddr; /* 0x00d8 */
305 __u8 eai; /* 0x00e0 */
306 __u8 peraid; /* 0x00e1 */
307 __u8 oai; /* 0x00e2 */
308 __u8 armid; /* 0x00e3 */
309 __u8 reservede4[4]; /* 0x00e4 */
310 union {
311 __u64 tecmc; /* 0x00e8 */
312 struct {
313 __u16 subchannel_id; /* 0x00e8 */
314 __u16 subchannel_nr; /* 0x00ea */
315 __u32 io_int_parm; /* 0x00ec */
316 __u32 io_int_word; /* 0x00f0 */
317 };
318 } __packed;
319 __u8 reservedf4[8]; /* 0x00f4 */
320 #define CRYCB_FORMAT_MASK 0x00000003
321 #define CRYCB_FORMAT0 0x00000000
322 #define CRYCB_FORMAT1 0x00000001
323 #define CRYCB_FORMAT2 0x00000003
324 __u32 crycbd; /* 0x00fc */
325 __u64 gcr[16]; /* 0x0100 */
326 union {
327 __u64 gbea; /* 0x0180 */
328 __u64 sidad;
329 };
330 __u8 reserved188[8]; /* 0x0188 */
331 __u64 sdnxo; /* 0x0190 */
332 __u8 reserved198[8]; /* 0x0198 */
333 __u32 fac; /* 0x01a0 */
334 __u8 reserved1a4[20]; /* 0x01a4 */
335 __u64 cbrlo; /* 0x01b8 */
336 __u8 reserved1c0[8]; /* 0x01c0 */
337 #define ECD_HOSTREGMGMT 0x20000000
338 #define ECD_MEF 0x08000000
339 #define ECD_ETOKENF 0x02000000
340 #define ECD_ECC 0x00200000
341 __u32 ecd; /* 0x01c8 */
342 __u8 reserved1cc[18]; /* 0x01cc */
343 __u64 pp; /* 0x01de */
344 __u8 reserved1e6[2]; /* 0x01e6 */
345 __u64 itdba; /* 0x01e8 */
346 __u64 riccbd; /* 0x01f0 */
347 __u64 gvrd; /* 0x01f8 */
348 } __packed __aligned(512);
349
350 struct kvm_s390_itdb {
351 __u8 data[256];
352 };
353
354 struct sie_page {
355 struct kvm_s390_sie_block sie_block;
356 struct mcck_volatile_info mcck_info; /* 0x0200 */
357 __u8 reserved218[360]; /* 0x0218 */
358 __u64 pv_grregs[16]; /* 0x0380 */
359 __u8 reserved400[512]; /* 0x0400 */
360 struct kvm_s390_itdb itdb; /* 0x0600 */
361 __u8 reserved700[2304]; /* 0x0700 */
362 };
363
364 struct kvm_vcpu_stat {
365 u64 exit_userspace;
366 u64 exit_null;
367 u64 exit_external_request;
368 u64 exit_io_request;
369 u64 exit_external_interrupt;
370 u64 exit_stop_request;
371 u64 exit_validity;
372 u64 exit_instruction;
373 u64 exit_pei;
374 u64 halt_successful_poll;
375 u64 halt_attempted_poll;
376 u64 halt_poll_invalid;
377 u64 halt_no_poll_steal;
378 u64 halt_wakeup;
379 u64 halt_poll_success_ns;
380 u64 halt_poll_fail_ns;
381 u64 instruction_lctl;
382 u64 instruction_lctlg;
383 u64 instruction_stctl;
384 u64 instruction_stctg;
385 u64 exit_program_interruption;
386 u64 exit_instr_and_program;
387 u64 exit_operation_exception;
388 u64 deliver_ckc;
389 u64 deliver_cputm;
390 u64 deliver_external_call;
391 u64 deliver_emergency_signal;
392 u64 deliver_service_signal;
393 u64 deliver_virtio;
394 u64 deliver_stop_signal;
395 u64 deliver_prefix_signal;
396 u64 deliver_restart_signal;
397 u64 deliver_program;
398 u64 deliver_io;
399 u64 deliver_machine_check;
400 u64 exit_wait_state;
401 u64 inject_ckc;
402 u64 inject_cputm;
403 u64 inject_external_call;
404 u64 inject_emergency_signal;
405 u64 inject_mchk;
406 u64 inject_pfault_init;
407 u64 inject_program;
408 u64 inject_restart;
409 u64 inject_set_prefix;
410 u64 inject_stop_signal;
411 u64 instruction_epsw;
412 u64 instruction_gs;
413 u64 instruction_io_other;
414 u64 instruction_lpsw;
415 u64 instruction_lpswe;
416 u64 instruction_pfmf;
417 u64 instruction_ptff;
418 u64 instruction_sck;
419 u64 instruction_sckpf;
420 u64 instruction_stidp;
421 u64 instruction_spx;
422 u64 instruction_stpx;
423 u64 instruction_stap;
424 u64 instruction_iske;
425 u64 instruction_ri;
426 u64 instruction_rrbe;
427 u64 instruction_sske;
428 u64 instruction_ipte_interlock;
429 u64 instruction_stsi;
430 u64 instruction_stfl;
431 u64 instruction_tb;
432 u64 instruction_tpi;
433 u64 instruction_tprot;
434 u64 instruction_tsch;
435 u64 instruction_sie;
436 u64 instruction_essa;
437 u64 instruction_sthyi;
438 u64 instruction_sigp_sense;
439 u64 instruction_sigp_sense_running;
440 u64 instruction_sigp_external_call;
441 u64 instruction_sigp_emergency;
442 u64 instruction_sigp_cond_emergency;
443 u64 instruction_sigp_start;
444 u64 instruction_sigp_stop;
445 u64 instruction_sigp_stop_store_status;
446 u64 instruction_sigp_store_status;
447 u64 instruction_sigp_store_adtl_status;
448 u64 instruction_sigp_arch;
449 u64 instruction_sigp_prefix;
450 u64 instruction_sigp_restart;
451 u64 instruction_sigp_init_cpu_reset;
452 u64 instruction_sigp_cpu_reset;
453 u64 instruction_sigp_unknown;
454 u64 diagnose_10;
455 u64 diagnose_44;
456 u64 diagnose_9c;
457 u64 diagnose_9c_ignored;
458 u64 diagnose_258;
459 u64 diagnose_308;
460 u64 diagnose_500;
461 u64 diagnose_other;
462 };
463
464 #define PGM_OPERATION 0x01
465 #define PGM_PRIVILEGED_OP 0x02
466 #define PGM_EXECUTE 0x03
467 #define PGM_PROTECTION 0x04
468 #define PGM_ADDRESSING 0x05
469 #define PGM_SPECIFICATION 0x06
470 #define PGM_DATA 0x07
471 #define PGM_FIXED_POINT_OVERFLOW 0x08
472 #define PGM_FIXED_POINT_DIVIDE 0x09
473 #define PGM_DECIMAL_OVERFLOW 0x0a
474 #define PGM_DECIMAL_DIVIDE 0x0b
475 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c
476 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d
477 #define PGM_HFP_SIGNIFICANCE 0x0e
478 #define PGM_HFP_DIVIDE 0x0f
479 #define PGM_SEGMENT_TRANSLATION 0x10
480 #define PGM_PAGE_TRANSLATION 0x11
481 #define PGM_TRANSLATION_SPEC 0x12
482 #define PGM_SPECIAL_OPERATION 0x13
483 #define PGM_OPERAND 0x15
484 #define PGM_TRACE_TABEL 0x16
485 #define PGM_VECTOR_PROCESSING 0x1b
486 #define PGM_SPACE_SWITCH 0x1c
487 #define PGM_HFP_SQUARE_ROOT 0x1d
488 #define PGM_PC_TRANSLATION_SPEC 0x1f
489 #define PGM_AFX_TRANSLATION 0x20
490 #define PGM_ASX_TRANSLATION 0x21
491 #define PGM_LX_TRANSLATION 0x22
492 #define PGM_EX_TRANSLATION 0x23
493 #define PGM_PRIMARY_AUTHORITY 0x24
494 #define PGM_SECONDARY_AUTHORITY 0x25
495 #define PGM_LFX_TRANSLATION 0x26
496 #define PGM_LSX_TRANSLATION 0x27
497 #define PGM_ALET_SPECIFICATION 0x28
498 #define PGM_ALEN_TRANSLATION 0x29
499 #define PGM_ALE_SEQUENCE 0x2a
500 #define PGM_ASTE_VALIDITY 0x2b
501 #define PGM_ASTE_SEQUENCE 0x2c
502 #define PGM_EXTENDED_AUTHORITY 0x2d
503 #define PGM_LSTE_SEQUENCE 0x2e
504 #define PGM_ASTE_INSTANCE 0x2f
505 #define PGM_STACK_FULL 0x30
506 #define PGM_STACK_EMPTY 0x31
507 #define PGM_STACK_SPECIFICATION 0x32
508 #define PGM_STACK_TYPE 0x33
509 #define PGM_STACK_OPERATION 0x34
510 #define PGM_ASCE_TYPE 0x38
511 #define PGM_REGION_FIRST_TRANS 0x39
512 #define PGM_REGION_SECOND_TRANS 0x3a
513 #define PGM_REGION_THIRD_TRANS 0x3b
514 #define PGM_MONITOR 0x40
515 #define PGM_PER 0x80
516 #define PGM_CRYPTO_OPERATION 0x119
517
518 /* irq types in ascend order of priorities */
519 enum irq_types {
520 IRQ_PEND_SET_PREFIX = 0,
521 IRQ_PEND_RESTART,
522 IRQ_PEND_SIGP_STOP,
523 IRQ_PEND_IO_ISC_7,
524 IRQ_PEND_IO_ISC_6,
525 IRQ_PEND_IO_ISC_5,
526 IRQ_PEND_IO_ISC_4,
527 IRQ_PEND_IO_ISC_3,
528 IRQ_PEND_IO_ISC_2,
529 IRQ_PEND_IO_ISC_1,
530 IRQ_PEND_IO_ISC_0,
531 IRQ_PEND_VIRTIO,
532 IRQ_PEND_PFAULT_DONE,
533 IRQ_PEND_PFAULT_INIT,
534 IRQ_PEND_EXT_HOST,
535 IRQ_PEND_EXT_SERVICE,
536 IRQ_PEND_EXT_SERVICE_EV,
537 IRQ_PEND_EXT_TIMING,
538 IRQ_PEND_EXT_CPU_TIMER,
539 IRQ_PEND_EXT_CLOCK_COMP,
540 IRQ_PEND_EXT_EXTERNAL,
541 IRQ_PEND_EXT_EMERGENCY,
542 IRQ_PEND_EXT_MALFUNC,
543 IRQ_PEND_EXT_IRQ_KEY,
544 IRQ_PEND_MCHK_REP,
545 IRQ_PEND_PROG,
546 IRQ_PEND_SVC,
547 IRQ_PEND_MCHK_EX,
548 IRQ_PEND_COUNT
549 };
550
551 /* We have 2M for virtio device descriptor pages. Smallest amount of
552 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
553 */
554 #define KVM_S390_MAX_VIRTIO_IRQS 87381
555
556 /*
557 * Repressible (non-floating) machine check interrupts
558 * subclass bits in MCIC
559 */
560 #define MCHK_EXTD_BIT 58
561 #define MCHK_DEGR_BIT 56
562 #define MCHK_WARN_BIT 55
563 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
564 (1UL << MCHK_EXTD_BIT) | \
565 (1UL << MCHK_WARN_BIT))
566
567 /* Exigent machine check interrupts subclass bits in MCIC */
568 #define MCHK_SD_BIT 63
569 #define MCHK_PD_BIT 62
570 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
571
572 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \
573 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
574 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \
575 (1UL << IRQ_PEND_EXT_MALFUNC) | \
576 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
577 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
578 (1UL << IRQ_PEND_EXT_TIMING) | \
579 (1UL << IRQ_PEND_EXT_HOST) | \
580 (1UL << IRQ_PEND_EXT_SERVICE) | \
581 (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
582 (1UL << IRQ_PEND_VIRTIO) | \
583 (1UL << IRQ_PEND_PFAULT_INIT) | \
584 (1UL << IRQ_PEND_PFAULT_DONE))
585
586 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
587 (1UL << IRQ_PEND_IO_ISC_1) | \
588 (1UL << IRQ_PEND_IO_ISC_2) | \
589 (1UL << IRQ_PEND_IO_ISC_3) | \
590 (1UL << IRQ_PEND_IO_ISC_4) | \
591 (1UL << IRQ_PEND_IO_ISC_5) | \
592 (1UL << IRQ_PEND_IO_ISC_6) | \
593 (1UL << IRQ_PEND_IO_ISC_7))
594
595 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
596 (1UL << IRQ_PEND_MCHK_EX))
597
598 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER) | \
599 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
600 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
601 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
602 (1UL << IRQ_PEND_EXT_SERVICE) | \
603 (1UL << IRQ_PEND_EXT_SERVICE_EV))
604
605 struct kvm_s390_interrupt_info {
606 struct list_head list;
607 u64 type;
608 union {
609 struct kvm_s390_io_info io;
610 struct kvm_s390_ext_info ext;
611 struct kvm_s390_pgm_info pgm;
612 struct kvm_s390_emerg_info emerg;
613 struct kvm_s390_extcall_info extcall;
614 struct kvm_s390_prefix_info prefix;
615 struct kvm_s390_stop_info stop;
616 struct kvm_s390_mchk_info mchk;
617 };
618 };
619
620 struct kvm_s390_irq_payload {
621 struct kvm_s390_io_info io;
622 struct kvm_s390_ext_info ext;
623 struct kvm_s390_pgm_info pgm;
624 struct kvm_s390_emerg_info emerg;
625 struct kvm_s390_extcall_info extcall;
626 struct kvm_s390_prefix_info prefix;
627 struct kvm_s390_stop_info stop;
628 struct kvm_s390_mchk_info mchk;
629 };
630
631 struct kvm_s390_local_interrupt {
632 spinlock_t lock;
633 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
634 struct kvm_s390_irq_payload irq;
635 unsigned long pending_irqs;
636 };
637
638 #define FIRQ_LIST_IO_ISC_0 0
639 #define FIRQ_LIST_IO_ISC_1 1
640 #define FIRQ_LIST_IO_ISC_2 2
641 #define FIRQ_LIST_IO_ISC_3 3
642 #define FIRQ_LIST_IO_ISC_4 4
643 #define FIRQ_LIST_IO_ISC_5 5
644 #define FIRQ_LIST_IO_ISC_6 6
645 #define FIRQ_LIST_IO_ISC_7 7
646 #define FIRQ_LIST_PFAULT 8
647 #define FIRQ_LIST_VIRTIO 9
648 #define FIRQ_LIST_COUNT 10
649 #define FIRQ_CNTR_IO 0
650 #define FIRQ_CNTR_SERVICE 1
651 #define FIRQ_CNTR_VIRTIO 2
652 #define FIRQ_CNTR_PFAULT 3
653 #define FIRQ_MAX_COUNT 4
654
655 /* mask the AIS mode for a given ISC */
656 #define AIS_MODE_MASK(isc) (0x80 >> isc)
657
658 #define KVM_S390_AIS_MODE_ALL 0
659 #define KVM_S390_AIS_MODE_SINGLE 1
660
661 struct kvm_s390_float_interrupt {
662 unsigned long pending_irqs;
663 unsigned long masked_irqs;
664 spinlock_t lock;
665 struct list_head lists[FIRQ_LIST_COUNT];
666 int counters[FIRQ_MAX_COUNT];
667 struct kvm_s390_mchk_info mchk;
668 struct kvm_s390_ext_info srv_signal;
669 int next_rr_cpu;
670 struct mutex ais_lock;
671 u8 simm;
672 u8 nimm;
673 };
674
675 struct kvm_hw_wp_info_arch {
676 unsigned long addr;
677 unsigned long phys_addr;
678 int len;
679 char *old_data;
680 };
681
682 struct kvm_hw_bp_info_arch {
683 unsigned long addr;
684 int len;
685 };
686
687 /*
688 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
689 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
690 * arch/s390/include/uapi/asm/kvm.h
691 */
692 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
693
694 #define guestdbg_enabled(vcpu) \
695 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
696 #define guestdbg_sstep_enabled(vcpu) \
697 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
698 #define guestdbg_hw_bp_enabled(vcpu) \
699 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
700 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
701 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
702
703 struct kvm_guestdbg_info_arch {
704 unsigned long cr0;
705 unsigned long cr9;
706 unsigned long cr10;
707 unsigned long cr11;
708 struct kvm_hw_bp_info_arch *hw_bp_info;
709 struct kvm_hw_wp_info_arch *hw_wp_info;
710 int nr_hw_bp;
711 int nr_hw_wp;
712 unsigned long last_bp;
713 };
714
715 struct kvm_s390_pv_vcpu {
716 u64 handle;
717 unsigned long stor_base;
718 };
719
720 struct kvm_vcpu_arch {
721 struct kvm_s390_sie_block *sie_block;
722 /* if vsie is active, currently executed shadow sie control block */
723 struct kvm_s390_sie_block *vsie_block;
724 unsigned int host_acrs[NUM_ACRS];
725 struct gs_cb *host_gscb;
726 struct fpu host_fpregs;
727 struct kvm_s390_local_interrupt local_int;
728 struct hrtimer ckc_timer;
729 struct kvm_s390_pgm_info pgm;
730 struct gmap *gmap;
731 /* backup location for the currently enabled gmap when scheduled out */
732 struct gmap *enabled_gmap;
733 struct kvm_guestdbg_info_arch guestdbg;
734 unsigned long pfault_token;
735 unsigned long pfault_select;
736 unsigned long pfault_compare;
737 bool cputm_enabled;
738 /*
739 * The seqcount protects updates to cputm_start and sie_block.cputm,
740 * this way we can have non-blocking reads with consistent values.
741 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
742 * values and to start/stop/enable/disable cpu timer accounting.
743 */
744 seqcount_t cputm_seqcount;
745 __u64 cputm_start;
746 bool gs_enabled;
747 bool skey_enabled;
748 struct kvm_s390_pv_vcpu pv;
749 union diag318_info diag318_info;
750 };
751
752 struct kvm_vm_stat {
753 u64 inject_io;
754 u64 inject_float_mchk;
755 u64 inject_pfault_done;
756 u64 inject_service_signal;
757 u64 inject_virtio;
758 u64 remote_tlb_flush;
759 };
760
761 struct kvm_arch_memory_slot {
762 };
763
764 struct s390_map_info {
765 struct list_head list;
766 __u64 guest_addr;
767 __u64 addr;
768 struct page *page;
769 };
770
771 struct s390_io_adapter {
772 unsigned int id;
773 int isc;
774 bool maskable;
775 bool masked;
776 bool swap;
777 bool suppressible;
778 };
779
780 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
781 #define MAX_S390_ADAPTER_MAPS 256
782
783 /* maximum size of facilities and facility mask is 2k bytes */
784 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
785 #define S390_ARCH_FAC_LIST_SIZE_U64 \
786 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
787 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
788 #define S390_ARCH_FAC_MASK_SIZE_U64 \
789 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
790
791 struct kvm_s390_cpu_model {
792 /* facility mask supported by kvm & hosting machine */
793 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
794 struct kvm_s390_vm_cpu_subfunc subfuncs;
795 /* facility list requested by guest (in dma page) */
796 __u64 *fac_list;
797 u64 cpuid;
798 unsigned short ibc;
799 };
800
801 struct kvm_s390_module_hook {
802 int (*hook)(struct kvm_vcpu *vcpu);
803 struct module *owner;
804 };
805
806 struct kvm_s390_crypto {
807 struct kvm_s390_crypto_cb *crycb;
808 struct kvm_s390_module_hook *pqap_hook;
809 __u32 crycbd;
810 __u8 aes_kw;
811 __u8 dea_kw;
812 __u8 apie;
813 };
814
815 #define APCB0_MASK_SIZE 1
816 struct kvm_s390_apcb0 {
817 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */
818 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */
819 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */
820 __u64 reserved18; /* 0x0018 */
821 };
822
823 #define APCB1_MASK_SIZE 4
824 struct kvm_s390_apcb1 {
825 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */
826 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */
827 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */
828 __u64 reserved60[4]; /* 0x0060 */
829 };
830
831 struct kvm_s390_crypto_cb {
832 struct kvm_s390_apcb0 apcb0; /* 0x0000 */
833 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */
834 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */
835 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */
836 struct kvm_s390_apcb1 apcb1; /* 0x0080 */
837 };
838
839 struct kvm_s390_gisa {
840 union {
841 struct { /* common to all formats */
842 u32 next_alert;
843 u8 ipm;
844 u8 reserved01[2];
845 u8 iam;
846 };
847 struct { /* format 0 */
848 u32 next_alert;
849 u8 ipm;
850 u8 reserved01;
851 u8 : 6;
852 u8 g : 1;
853 u8 c : 1;
854 u8 iam;
855 u8 reserved02[4];
856 u32 airq_count;
857 } g0;
858 struct { /* format 1 */
859 u32 next_alert;
860 u8 ipm;
861 u8 simm;
862 u8 nimm;
863 u8 iam;
864 u8 aism[8];
865 u8 : 6;
866 u8 g : 1;
867 u8 c : 1;
868 u8 reserved03[11];
869 u32 airq_count;
870 } g1;
871 struct {
872 u64 word[4];
873 } u64;
874 };
875 };
876
877 struct kvm_s390_gib {
878 u32 alert_list_origin;
879 u32 reserved01;
880 u8:5;
881 u8 nisc:3;
882 u8 reserved03[3];
883 u32 reserved04[5];
884 };
885
886 /*
887 * sie_page2 has to be allocated as DMA because fac_list, crycb and
888 * gisa need 31bit addresses in the sie control block.
889 */
890 struct sie_page2 {
891 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */
892 struct kvm_s390_crypto_cb crycb; /* 0x0800 */
893 struct kvm_s390_gisa gisa; /* 0x0900 */
894 struct kvm *kvm; /* 0x0920 */
895 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */
896 };
897
898 struct kvm_s390_vsie {
899 struct mutex mutex;
900 struct radix_tree_root addr_to_page;
901 int page_count;
902 int next;
903 struct page *pages[KVM_MAX_VCPUS];
904 };
905
906 struct kvm_s390_gisa_iam {
907 u8 mask;
908 spinlock_t ref_lock;
909 u32 ref_count[MAX_ISC + 1];
910 };
911
912 struct kvm_s390_gisa_interrupt {
913 struct kvm_s390_gisa *origin;
914 struct kvm_s390_gisa_iam alert;
915 struct hrtimer timer;
916 u64 expires;
917 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
918 };
919
920 struct kvm_s390_pv {
921 u64 handle;
922 u64 guest_len;
923 unsigned long stor_base;
924 void *stor_var;
925 };
926
927 struct kvm_arch{
928 void *sca;
929 int use_esca;
930 rwlock_t sca_lock;
931 debug_info_t *dbf;
932 struct kvm_s390_float_interrupt float_int;
933 struct kvm_device *flic;
934 struct gmap *gmap;
935 unsigned long mem_limit;
936 int css_support;
937 int use_irqchip;
938 int use_cmma;
939 int use_pfmfi;
940 int use_skf;
941 int user_cpu_state_ctrl;
942 int user_sigp;
943 int user_stsi;
944 int user_instr0;
945 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
946 wait_queue_head_t ipte_wq;
947 int ipte_lock_count;
948 struct mutex ipte_mutex;
949 spinlock_t start_stop_lock;
950 struct sie_page2 *sie_page2;
951 struct kvm_s390_cpu_model model;
952 struct kvm_s390_crypto crypto;
953 struct kvm_s390_vsie vsie;
954 u8 epdx;
955 u64 epoch;
956 int migration_mode;
957 atomic64_t cmma_dirty_pages;
958 /* subset of available cpu features enabled by user space */
959 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
960 /* indexed by vcpu_idx */
961 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
962 struct kvm_s390_gisa_interrupt gisa_int;
963 struct kvm_s390_pv pv;
964 };
965
966 #define KVM_HVA_ERR_BAD (-1UL)
967 #define KVM_HVA_ERR_RO_BAD (-2UL)
968
kvm_is_error_hva(unsigned long addr)969 static inline bool kvm_is_error_hva(unsigned long addr)
970 {
971 return IS_ERR_VALUE(addr);
972 }
973
974 #define ASYNC_PF_PER_VCPU 64
975 struct kvm_arch_async_pf {
976 unsigned long pfault_token;
977 };
978
979 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
980
981 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
982 struct kvm_async_pf *work);
983
984 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
985 struct kvm_async_pf *work);
986
987 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
988 struct kvm_async_pf *work);
989
kvm_arch_async_page_present_queued(struct kvm_vcpu * vcpu)990 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
991
992 void kvm_arch_crypto_clear_masks(struct kvm *kvm);
993 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
994 unsigned long *aqm, unsigned long *adm);
995
996 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
997 extern char sie_exit;
998
999 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
1000 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
1001
kvm_arch_hardware_disable(void)1002 static inline void kvm_arch_hardware_disable(void) {}
kvm_arch_sync_events(struct kvm * kvm)1003 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
kvm_arch_sched_in(struct kvm_vcpu * vcpu,int cpu)1004 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)1005 static inline void kvm_arch_free_memslot(struct kvm *kvm,
1006 struct kvm_memory_slot *slot) {}
kvm_arch_memslots_updated(struct kvm * kvm,u64 gen)1007 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
kvm_arch_flush_shadow_all(struct kvm * kvm)1008 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
kvm_arch_flush_shadow_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)1009 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
1010 struct kvm_memory_slot *slot) {}
kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)1011 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)1012 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
1013
1014 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
1015
1016 #endif
1017