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
49 #define SIGP_CTRL_C 0x80
50 #define SIGP_CTRL_SCN_MASK 0x3f
51
52 union bsca_sigp_ctrl {
53 __u8 value;
54 struct {
55 __u8 c : 1;
56 __u8 r : 1;
57 __u8 scn : 6;
58 };
59 };
60
61 union esca_sigp_ctrl {
62 __u16 value;
63 struct {
64 __u8 c : 1;
65 __u8 reserved: 7;
66 __u8 scn;
67 };
68 };
69
70 struct esca_entry {
71 union esca_sigp_ctrl sigp_ctrl;
72 __u16 reserved1[3];
73 __u64 sda;
74 __u64 reserved2[6];
75 };
76
77 struct bsca_entry {
78 __u8 reserved0;
79 union bsca_sigp_ctrl sigp_ctrl;
80 __u16 reserved[3];
81 __u64 sda;
82 __u64 reserved2[2];
83 };
84
85 union ipte_control {
86 unsigned long val;
87 struct {
88 unsigned long k : 1;
89 unsigned long kh : 31;
90 unsigned long kg : 32;
91 };
92 };
93
94 struct bsca_block {
95 union ipte_control ipte_control;
96 __u64 reserved[5];
97 __u64 mcn;
98 __u64 reserved2;
99 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
100 };
101
102 struct esca_block {
103 union ipte_control ipte_control;
104 __u64 reserved1[7];
105 __u64 mcn[4];
106 __u64 reserved2[20];
107 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
108 };
109
110 /*
111 * This struct is used to store some machine check info from lowcore
112 * for machine checks that happen while the guest is running.
113 * This info in host's lowcore might be overwritten by a second machine
114 * check from host when host is in the machine check's high-level handling.
115 * The size is 24 bytes.
116 */
117 struct mcck_volatile_info {
118 __u64 mcic;
119 __u64 failing_storage_address;
120 __u32 ext_damage_code;
121 __u32 reserved;
122 };
123
124 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
125 CR0_MEASUREMENT_ALERT_SUBMASK)
126 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
127 CR14_EXTERNAL_DAMAGE_SUBMASK)
128
129 #define SIDAD_SIZE_MASK 0xff
130 #define sida_origin(sie_block) \
131 ((sie_block)->sidad & PAGE_MASK)
132 #define sida_size(sie_block) \
133 ((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE)
134
135 #define CPUSTAT_STOPPED 0x80000000
136 #define CPUSTAT_WAIT 0x10000000
137 #define CPUSTAT_ECALL_PEND 0x08000000
138 #define CPUSTAT_STOP_INT 0x04000000
139 #define CPUSTAT_IO_INT 0x02000000
140 #define CPUSTAT_EXT_INT 0x01000000
141 #define CPUSTAT_RUNNING 0x00800000
142 #define CPUSTAT_RETAINED 0x00400000
143 #define CPUSTAT_TIMING_SUB 0x00020000
144 #define CPUSTAT_SIE_SUB 0x00010000
145 #define CPUSTAT_RRF 0x00008000
146 #define CPUSTAT_SLSV 0x00004000
147 #define CPUSTAT_SLSR 0x00002000
148 #define CPUSTAT_ZARCH 0x00000800
149 #define CPUSTAT_MCDS 0x00000100
150 #define CPUSTAT_KSS 0x00000200
151 #define CPUSTAT_SM 0x00000080
152 #define CPUSTAT_IBS 0x00000040
153 #define CPUSTAT_GED2 0x00000010
154 #define CPUSTAT_G 0x00000008
155 #define CPUSTAT_GED 0x00000004
156 #define CPUSTAT_J 0x00000002
157 #define CPUSTAT_P 0x00000001
158
159 struct kvm_s390_sie_block {
160 atomic_t cpuflags; /* 0x0000 */
161 __u32 : 1; /* 0x0004 */
162 __u32 prefix : 18;
163 __u32 : 1;
164 __u32 ibc : 12;
165 __u8 reserved08[4]; /* 0x0008 */
166 #define PROG_IN_SIE (1<<0)
167 __u32 prog0c; /* 0x000c */
168 union {
169 __u8 reserved10[16]; /* 0x0010 */
170 struct {
171 __u64 pv_handle_cpu;
172 __u64 pv_handle_config;
173 };
174 };
175 #define PROG_BLOCK_SIE (1<<0)
176 #define PROG_REQUEST (1<<1)
177 atomic_t prog20; /* 0x0020 */
178 __u8 reserved24[4]; /* 0x0024 */
179 __u64 cputm; /* 0x0028 */
180 __u64 ckc; /* 0x0030 */
181 __u64 epoch; /* 0x0038 */
182 __u32 svcc; /* 0x0040 */
183 #define LCTL_CR0 0x8000
184 #define LCTL_CR6 0x0200
185 #define LCTL_CR9 0x0040
186 #define LCTL_CR10 0x0020
187 #define LCTL_CR11 0x0010
188 #define LCTL_CR14 0x0002
189 __u16 lctl; /* 0x0044 */
190 __s16 icpua; /* 0x0046 */
191 #define ICTL_OPEREXC 0x80000000
192 #define ICTL_PINT 0x20000000
193 #define ICTL_LPSW 0x00400000
194 #define ICTL_STCTL 0x00040000
195 #define ICTL_ISKE 0x00004000
196 #define ICTL_SSKE 0x00002000
197 #define ICTL_RRBE 0x00001000
198 #define ICTL_TPROT 0x00000200
199 __u32 ictl; /* 0x0048 */
200 #define ECA_CEI 0x80000000
201 #define ECA_IB 0x40000000
202 #define ECA_SIGPI 0x10000000
203 #define ECA_MVPGI 0x01000000
204 #define ECA_AIV 0x00200000
205 #define ECA_VX 0x00020000
206 #define ECA_PROTEXCI 0x00002000
207 #define ECA_APIE 0x00000008
208 #define ECA_SII 0x00000001
209 __u32 eca; /* 0x004c */
210 #define ICPT_INST 0x04
211 #define ICPT_PROGI 0x08
212 #define ICPT_INSTPROGI 0x0C
213 #define ICPT_EXTREQ 0x10
214 #define ICPT_EXTINT 0x14
215 #define ICPT_IOREQ 0x18
216 #define ICPT_WAIT 0x1c
217 #define ICPT_VALIDITY 0x20
218 #define ICPT_STOP 0x28
219 #define ICPT_OPEREXC 0x2C
220 #define ICPT_PARTEXEC 0x38
221 #define ICPT_IOINST 0x40
222 #define ICPT_KSS 0x5c
223 #define ICPT_MCHKREQ 0x60
224 #define ICPT_INT_ENABLE 0x64
225 #define ICPT_PV_INSTR 0x68
226 #define ICPT_PV_NOTIFY 0x6c
227 #define ICPT_PV_PREF 0x70
228 __u8 icptcode; /* 0x0050 */
229 __u8 icptstatus; /* 0x0051 */
230 __u16 ihcpu; /* 0x0052 */
231 __u8 reserved54; /* 0x0054 */
232 #define IICTL_CODE_NONE 0x00
233 #define IICTL_CODE_MCHK 0x01
234 #define IICTL_CODE_EXT 0x02
235 #define IICTL_CODE_IO 0x03
236 #define IICTL_CODE_RESTART 0x04
237 #define IICTL_CODE_SPECIFICATION 0x10
238 #define IICTL_CODE_OPERAND 0x11
239 __u8 iictl; /* 0x0055 */
240 __u16 ipa; /* 0x0056 */
241 __u32 ipb; /* 0x0058 */
242 __u32 scaoh; /* 0x005c */
243 #define FPF_BPBC 0x20
244 __u8 fpf; /* 0x0060 */
245 #define ECB_GS 0x40
246 #define ECB_TE 0x10
247 #define ECB_SPECI 0x08
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 struct kvm_vcpu_stat_generic generic;
366 u64 exit_userspace;
367 u64 exit_null;
368 u64 exit_external_request;
369 u64 exit_io_request;
370 u64 exit_external_interrupt;
371 u64 exit_stop_request;
372 u64 exit_validity;
373 u64 exit_instruction;
374 u64 exit_pei;
375 u64 halt_no_poll_steal;
376 u64 instruction_lctl;
377 u64 instruction_lctlg;
378 u64 instruction_stctl;
379 u64 instruction_stctg;
380 u64 exit_program_interruption;
381 u64 exit_instr_and_program;
382 u64 exit_operation_exception;
383 u64 deliver_ckc;
384 u64 deliver_cputm;
385 u64 deliver_external_call;
386 u64 deliver_emergency_signal;
387 u64 deliver_service_signal;
388 u64 deliver_virtio;
389 u64 deliver_stop_signal;
390 u64 deliver_prefix_signal;
391 u64 deliver_restart_signal;
392 u64 deliver_program;
393 u64 deliver_io;
394 u64 deliver_machine_check;
395 u64 exit_wait_state;
396 u64 inject_ckc;
397 u64 inject_cputm;
398 u64 inject_external_call;
399 u64 inject_emergency_signal;
400 u64 inject_mchk;
401 u64 inject_pfault_init;
402 u64 inject_program;
403 u64 inject_restart;
404 u64 inject_set_prefix;
405 u64 inject_stop_signal;
406 u64 instruction_epsw;
407 u64 instruction_gs;
408 u64 instruction_io_other;
409 u64 instruction_lpsw;
410 u64 instruction_lpswe;
411 u64 instruction_pfmf;
412 u64 instruction_ptff;
413 u64 instruction_sck;
414 u64 instruction_sckpf;
415 u64 instruction_stidp;
416 u64 instruction_spx;
417 u64 instruction_stpx;
418 u64 instruction_stap;
419 u64 instruction_iske;
420 u64 instruction_ri;
421 u64 instruction_rrbe;
422 u64 instruction_sske;
423 u64 instruction_ipte_interlock;
424 u64 instruction_stsi;
425 u64 instruction_stfl;
426 u64 instruction_tb;
427 u64 instruction_tpi;
428 u64 instruction_tprot;
429 u64 instruction_tsch;
430 u64 instruction_sie;
431 u64 instruction_essa;
432 u64 instruction_sthyi;
433 u64 instruction_sigp_sense;
434 u64 instruction_sigp_sense_running;
435 u64 instruction_sigp_external_call;
436 u64 instruction_sigp_emergency;
437 u64 instruction_sigp_cond_emergency;
438 u64 instruction_sigp_start;
439 u64 instruction_sigp_stop;
440 u64 instruction_sigp_stop_store_status;
441 u64 instruction_sigp_store_status;
442 u64 instruction_sigp_store_adtl_status;
443 u64 instruction_sigp_arch;
444 u64 instruction_sigp_prefix;
445 u64 instruction_sigp_restart;
446 u64 instruction_sigp_init_cpu_reset;
447 u64 instruction_sigp_cpu_reset;
448 u64 instruction_sigp_unknown;
449 u64 instruction_diagnose_10;
450 u64 instruction_diagnose_44;
451 u64 instruction_diagnose_9c;
452 u64 diag_9c_ignored;
453 u64 diag_9c_forward;
454 u64 instruction_diagnose_258;
455 u64 instruction_diagnose_308;
456 u64 instruction_diagnose_500;
457 u64 instruction_diagnose_other;
458 u64 pfault_sync;
459 };
460
461 #define PGM_OPERATION 0x01
462 #define PGM_PRIVILEGED_OP 0x02
463 #define PGM_EXECUTE 0x03
464 #define PGM_PROTECTION 0x04
465 #define PGM_ADDRESSING 0x05
466 #define PGM_SPECIFICATION 0x06
467 #define PGM_DATA 0x07
468 #define PGM_FIXED_POINT_OVERFLOW 0x08
469 #define PGM_FIXED_POINT_DIVIDE 0x09
470 #define PGM_DECIMAL_OVERFLOW 0x0a
471 #define PGM_DECIMAL_DIVIDE 0x0b
472 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c
473 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d
474 #define PGM_HFP_SIGNIFICANCE 0x0e
475 #define PGM_HFP_DIVIDE 0x0f
476 #define PGM_SEGMENT_TRANSLATION 0x10
477 #define PGM_PAGE_TRANSLATION 0x11
478 #define PGM_TRANSLATION_SPEC 0x12
479 #define PGM_SPECIAL_OPERATION 0x13
480 #define PGM_OPERAND 0x15
481 #define PGM_TRACE_TABEL 0x16
482 #define PGM_VECTOR_PROCESSING 0x1b
483 #define PGM_SPACE_SWITCH 0x1c
484 #define PGM_HFP_SQUARE_ROOT 0x1d
485 #define PGM_PC_TRANSLATION_SPEC 0x1f
486 #define PGM_AFX_TRANSLATION 0x20
487 #define PGM_ASX_TRANSLATION 0x21
488 #define PGM_LX_TRANSLATION 0x22
489 #define PGM_EX_TRANSLATION 0x23
490 #define PGM_PRIMARY_AUTHORITY 0x24
491 #define PGM_SECONDARY_AUTHORITY 0x25
492 #define PGM_LFX_TRANSLATION 0x26
493 #define PGM_LSX_TRANSLATION 0x27
494 #define PGM_ALET_SPECIFICATION 0x28
495 #define PGM_ALEN_TRANSLATION 0x29
496 #define PGM_ALE_SEQUENCE 0x2a
497 #define PGM_ASTE_VALIDITY 0x2b
498 #define PGM_ASTE_SEQUENCE 0x2c
499 #define PGM_EXTENDED_AUTHORITY 0x2d
500 #define PGM_LSTE_SEQUENCE 0x2e
501 #define PGM_ASTE_INSTANCE 0x2f
502 #define PGM_STACK_FULL 0x30
503 #define PGM_STACK_EMPTY 0x31
504 #define PGM_STACK_SPECIFICATION 0x32
505 #define PGM_STACK_TYPE 0x33
506 #define PGM_STACK_OPERATION 0x34
507 #define PGM_ASCE_TYPE 0x38
508 #define PGM_REGION_FIRST_TRANS 0x39
509 #define PGM_REGION_SECOND_TRANS 0x3a
510 #define PGM_REGION_THIRD_TRANS 0x3b
511 #define PGM_MONITOR 0x40
512 #define PGM_PER 0x80
513 #define PGM_CRYPTO_OPERATION 0x119
514
515 /* irq types in ascend order of priorities */
516 enum irq_types {
517 IRQ_PEND_SET_PREFIX = 0,
518 IRQ_PEND_RESTART,
519 IRQ_PEND_SIGP_STOP,
520 IRQ_PEND_IO_ISC_7,
521 IRQ_PEND_IO_ISC_6,
522 IRQ_PEND_IO_ISC_5,
523 IRQ_PEND_IO_ISC_4,
524 IRQ_PEND_IO_ISC_3,
525 IRQ_PEND_IO_ISC_2,
526 IRQ_PEND_IO_ISC_1,
527 IRQ_PEND_IO_ISC_0,
528 IRQ_PEND_VIRTIO,
529 IRQ_PEND_PFAULT_DONE,
530 IRQ_PEND_PFAULT_INIT,
531 IRQ_PEND_EXT_HOST,
532 IRQ_PEND_EXT_SERVICE,
533 IRQ_PEND_EXT_SERVICE_EV,
534 IRQ_PEND_EXT_TIMING,
535 IRQ_PEND_EXT_CPU_TIMER,
536 IRQ_PEND_EXT_CLOCK_COMP,
537 IRQ_PEND_EXT_EXTERNAL,
538 IRQ_PEND_EXT_EMERGENCY,
539 IRQ_PEND_EXT_MALFUNC,
540 IRQ_PEND_EXT_IRQ_KEY,
541 IRQ_PEND_MCHK_REP,
542 IRQ_PEND_PROG,
543 IRQ_PEND_SVC,
544 IRQ_PEND_MCHK_EX,
545 IRQ_PEND_COUNT
546 };
547
548 /* We have 2M for virtio device descriptor pages. Smallest amount of
549 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
550 */
551 #define KVM_S390_MAX_VIRTIO_IRQS 87381
552
553 /*
554 * Repressible (non-floating) machine check interrupts
555 * subclass bits in MCIC
556 */
557 #define MCHK_EXTD_BIT 58
558 #define MCHK_DEGR_BIT 56
559 #define MCHK_WARN_BIT 55
560 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
561 (1UL << MCHK_EXTD_BIT) | \
562 (1UL << MCHK_WARN_BIT))
563
564 /* Exigent machine check interrupts subclass bits in MCIC */
565 #define MCHK_SD_BIT 63
566 #define MCHK_PD_BIT 62
567 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
568
569 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \
570 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
571 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \
572 (1UL << IRQ_PEND_EXT_MALFUNC) | \
573 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
574 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
575 (1UL << IRQ_PEND_EXT_TIMING) | \
576 (1UL << IRQ_PEND_EXT_HOST) | \
577 (1UL << IRQ_PEND_EXT_SERVICE) | \
578 (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
579 (1UL << IRQ_PEND_VIRTIO) | \
580 (1UL << IRQ_PEND_PFAULT_INIT) | \
581 (1UL << IRQ_PEND_PFAULT_DONE))
582
583 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
584 (1UL << IRQ_PEND_IO_ISC_1) | \
585 (1UL << IRQ_PEND_IO_ISC_2) | \
586 (1UL << IRQ_PEND_IO_ISC_3) | \
587 (1UL << IRQ_PEND_IO_ISC_4) | \
588 (1UL << IRQ_PEND_IO_ISC_5) | \
589 (1UL << IRQ_PEND_IO_ISC_6) | \
590 (1UL << IRQ_PEND_IO_ISC_7))
591
592 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
593 (1UL << IRQ_PEND_MCHK_EX))
594
595 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER) | \
596 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
597 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
598 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
599 (1UL << IRQ_PEND_EXT_SERVICE) | \
600 (1UL << IRQ_PEND_EXT_SERVICE_EV))
601
602 struct kvm_s390_interrupt_info {
603 struct list_head list;
604 u64 type;
605 union {
606 struct kvm_s390_io_info io;
607 struct kvm_s390_ext_info ext;
608 struct kvm_s390_pgm_info pgm;
609 struct kvm_s390_emerg_info emerg;
610 struct kvm_s390_extcall_info extcall;
611 struct kvm_s390_prefix_info prefix;
612 struct kvm_s390_stop_info stop;
613 struct kvm_s390_mchk_info mchk;
614 };
615 };
616
617 struct kvm_s390_irq_payload {
618 struct kvm_s390_io_info io;
619 struct kvm_s390_ext_info ext;
620 struct kvm_s390_pgm_info pgm;
621 struct kvm_s390_emerg_info emerg;
622 struct kvm_s390_extcall_info extcall;
623 struct kvm_s390_prefix_info prefix;
624 struct kvm_s390_stop_info stop;
625 struct kvm_s390_mchk_info mchk;
626 };
627
628 struct kvm_s390_local_interrupt {
629 spinlock_t lock;
630 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
631 struct kvm_s390_irq_payload irq;
632 unsigned long pending_irqs;
633 };
634
635 #define FIRQ_LIST_IO_ISC_0 0
636 #define FIRQ_LIST_IO_ISC_1 1
637 #define FIRQ_LIST_IO_ISC_2 2
638 #define FIRQ_LIST_IO_ISC_3 3
639 #define FIRQ_LIST_IO_ISC_4 4
640 #define FIRQ_LIST_IO_ISC_5 5
641 #define FIRQ_LIST_IO_ISC_6 6
642 #define FIRQ_LIST_IO_ISC_7 7
643 #define FIRQ_LIST_PFAULT 8
644 #define FIRQ_LIST_VIRTIO 9
645 #define FIRQ_LIST_COUNT 10
646 #define FIRQ_CNTR_IO 0
647 #define FIRQ_CNTR_SERVICE 1
648 #define FIRQ_CNTR_VIRTIO 2
649 #define FIRQ_CNTR_PFAULT 3
650 #define FIRQ_MAX_COUNT 4
651
652 /* mask the AIS mode for a given ISC */
653 #define AIS_MODE_MASK(isc) (0x80 >> isc)
654
655 #define KVM_S390_AIS_MODE_ALL 0
656 #define KVM_S390_AIS_MODE_SINGLE 1
657
658 struct kvm_s390_float_interrupt {
659 unsigned long pending_irqs;
660 unsigned long masked_irqs;
661 spinlock_t lock;
662 struct list_head lists[FIRQ_LIST_COUNT];
663 int counters[FIRQ_MAX_COUNT];
664 struct kvm_s390_mchk_info mchk;
665 struct kvm_s390_ext_info srv_signal;
666 int next_rr_cpu;
667 struct mutex ais_lock;
668 u8 simm;
669 u8 nimm;
670 };
671
672 struct kvm_hw_wp_info_arch {
673 unsigned long addr;
674 unsigned long phys_addr;
675 int len;
676 char *old_data;
677 };
678
679 struct kvm_hw_bp_info_arch {
680 unsigned long addr;
681 int len;
682 };
683
684 /*
685 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
686 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
687 * arch/s390/include/uapi/asm/kvm.h
688 */
689 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
690
691 #define guestdbg_enabled(vcpu) \
692 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
693 #define guestdbg_sstep_enabled(vcpu) \
694 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
695 #define guestdbg_hw_bp_enabled(vcpu) \
696 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
697 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
698 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
699
700 #define KVM_GUESTDBG_VALID_MASK \
701 (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\
702 KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING)
703
704 struct kvm_guestdbg_info_arch {
705 unsigned long cr0;
706 unsigned long cr9;
707 unsigned long cr10;
708 unsigned long cr11;
709 struct kvm_hw_bp_info_arch *hw_bp_info;
710 struct kvm_hw_wp_info_arch *hw_wp_info;
711 int nr_hw_bp;
712 int nr_hw_wp;
713 unsigned long last_bp;
714 };
715
716 struct kvm_s390_pv_vcpu {
717 u64 handle;
718 unsigned long stor_base;
719 };
720
721 struct kvm_vcpu_arch {
722 struct kvm_s390_sie_block *sie_block;
723 /* if vsie is active, currently executed shadow sie control block */
724 struct kvm_s390_sie_block *vsie_block;
725 unsigned int host_acrs[NUM_ACRS];
726 struct gs_cb *host_gscb;
727 struct fpu host_fpregs;
728 struct kvm_s390_local_interrupt local_int;
729 struct hrtimer ckc_timer;
730 struct kvm_s390_pgm_info pgm;
731 struct gmap *gmap;
732 /* backup location for the currently enabled gmap when scheduled out */
733 struct gmap *enabled_gmap;
734 struct kvm_guestdbg_info_arch guestdbg;
735 unsigned long pfault_token;
736 unsigned long pfault_select;
737 unsigned long pfault_compare;
738 bool cputm_enabled;
739 /*
740 * The seqcount protects updates to cputm_start and sie_block.cputm,
741 * this way we can have non-blocking reads with consistent values.
742 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
743 * values and to start/stop/enable/disable cpu timer accounting.
744 */
745 seqcount_t cputm_seqcount;
746 __u64 cputm_start;
747 bool gs_enabled;
748 bool skey_enabled;
749 struct kvm_s390_pv_vcpu pv;
750 union diag318_info diag318_info;
751 };
752
753 struct kvm_vm_stat {
754 struct kvm_vm_stat_generic generic;
755 u64 inject_io;
756 u64 inject_float_mchk;
757 u64 inject_pfault_done;
758 u64 inject_service_signal;
759 u64 inject_virtio;
760 };
761
762 struct kvm_arch_memory_slot {
763 };
764
765 struct s390_map_info {
766 struct list_head list;
767 __u64 guest_addr;
768 __u64 addr;
769 struct page *page;
770 };
771
772 struct s390_io_adapter {
773 unsigned int id;
774 int isc;
775 bool maskable;
776 bool masked;
777 bool swap;
778 bool suppressible;
779 };
780
781 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
782 #define MAX_S390_ADAPTER_MAPS 256
783
784 /* maximum size of facilities and facility mask is 2k bytes */
785 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
786 #define S390_ARCH_FAC_LIST_SIZE_U64 \
787 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
788 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
789 #define S390_ARCH_FAC_MASK_SIZE_U64 \
790 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
791
792 struct kvm_s390_cpu_model {
793 /* facility mask supported by kvm & hosting machine */
794 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
795 struct kvm_s390_vm_cpu_subfunc subfuncs;
796 /* facility list requested by guest (in dma page) */
797 __u64 *fac_list;
798 u64 cpuid;
799 unsigned short ibc;
800 };
801
802 typedef int (*crypto_hook)(struct kvm_vcpu *vcpu);
803
804 struct kvm_s390_crypto {
805 struct kvm_s390_crypto_cb *crycb;
806 struct rw_semaphore pqap_hook_rwsem;
807 crypto_hook *pqap_hook;
808 __u32 crycbd;
809 __u8 aes_kw;
810 __u8 dea_kw;
811 __u8 apie;
812 };
813
814 #define APCB0_MASK_SIZE 1
815 struct kvm_s390_apcb0 {
816 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */
817 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */
818 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */
819 __u64 reserved18; /* 0x0018 */
820 };
821
822 #define APCB1_MASK_SIZE 4
823 struct kvm_s390_apcb1 {
824 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */
825 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */
826 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */
827 __u64 reserved60[4]; /* 0x0060 */
828 };
829
830 struct kvm_s390_crypto_cb {
831 struct kvm_s390_apcb0 apcb0; /* 0x0000 */
832 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */
833 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */
834 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */
835 struct kvm_s390_apcb1 apcb1; /* 0x0080 */
836 };
837
838 struct kvm_s390_gisa {
839 union {
840 struct { /* common to all formats */
841 u32 next_alert;
842 u8 ipm;
843 u8 reserved01[2];
844 u8 iam;
845 };
846 struct { /* format 0 */
847 u32 next_alert;
848 u8 ipm;
849 u8 reserved01;
850 u8 : 6;
851 u8 g : 1;
852 u8 c : 1;
853 u8 iam;
854 u8 reserved02[4];
855 u32 airq_count;
856 } g0;
857 struct { /* format 1 */
858 u32 next_alert;
859 u8 ipm;
860 u8 simm;
861 u8 nimm;
862 u8 iam;
863 u8 aism[8];
864 u8 : 6;
865 u8 g : 1;
866 u8 c : 1;
867 u8 reserved03[11];
868 u32 airq_count;
869 } g1;
870 struct {
871 u64 word[4];
872 } u64;
873 };
874 };
875
876 struct kvm_s390_gib {
877 u32 alert_list_origin;
878 u32 reserved01;
879 u8:5;
880 u8 nisc:3;
881 u8 reserved03[3];
882 u32 reserved04[5];
883 };
884
885 /*
886 * sie_page2 has to be allocated as DMA because fac_list, crycb and
887 * gisa need 31bit addresses in the sie control block.
888 */
889 struct sie_page2 {
890 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */
891 struct kvm_s390_crypto_cb crycb; /* 0x0800 */
892 struct kvm_s390_gisa gisa; /* 0x0900 */
893 struct kvm *kvm; /* 0x0920 */
894 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */
895 };
896
897 struct kvm_s390_vsie {
898 struct mutex mutex;
899 struct radix_tree_root addr_to_page;
900 int page_count;
901 int next;
902 struct page *pages[KVM_MAX_VCPUS];
903 };
904
905 struct kvm_s390_gisa_iam {
906 u8 mask;
907 spinlock_t ref_lock;
908 u32 ref_count[MAX_ISC + 1];
909 };
910
911 struct kvm_s390_gisa_interrupt {
912 struct kvm_s390_gisa *origin;
913 struct kvm_s390_gisa_iam alert;
914 struct hrtimer timer;
915 u64 expires;
916 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
917 };
918
919 struct kvm_s390_pv {
920 u64 handle;
921 u64 guest_len;
922 unsigned long stor_base;
923 void *stor_var;
924 };
925
926 struct kvm_arch{
927 void *sca;
928 int use_esca;
929 rwlock_t sca_lock;
930 debug_info_t *dbf;
931 struct kvm_s390_float_interrupt float_int;
932 struct kvm_device *flic;
933 struct gmap *gmap;
934 unsigned long mem_limit;
935 int css_support;
936 int use_irqchip;
937 int use_cmma;
938 int use_pfmfi;
939 int use_skf;
940 int user_cpu_state_ctrl;
941 int user_sigp;
942 int user_stsi;
943 int user_instr0;
944 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
945 wait_queue_head_t ipte_wq;
946 int ipte_lock_count;
947 struct mutex ipte_mutex;
948 spinlock_t start_stop_lock;
949 struct sie_page2 *sie_page2;
950 struct kvm_s390_cpu_model model;
951 struct kvm_s390_crypto crypto;
952 struct kvm_s390_vsie vsie;
953 u8 epdx;
954 u64 epoch;
955 int migration_mode;
956 atomic64_t cmma_dirty_pages;
957 /* subset of available cpu features enabled by user space */
958 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
959 /* indexed by vcpu_idx */
960 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
961 struct kvm_s390_gisa_interrupt gisa_int;
962 struct kvm_s390_pv pv;
963 };
964
965 #define KVM_HVA_ERR_BAD (-1UL)
966 #define KVM_HVA_ERR_RO_BAD (-2UL)
967
kvm_is_error_hva(unsigned long addr)968 static inline bool kvm_is_error_hva(unsigned long addr)
969 {
970 return IS_ERR_VALUE(addr);
971 }
972
973 #define ASYNC_PF_PER_VCPU 64
974 struct kvm_arch_async_pf {
975 unsigned long pfault_token;
976 };
977
978 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
979
980 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
981 struct kvm_async_pf *work);
982
983 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
984 struct kvm_async_pf *work);
985
986 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
987 struct kvm_async_pf *work);
988
kvm_arch_async_page_present_queued(struct kvm_vcpu * vcpu)989 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
990
991 void kvm_arch_crypto_clear_masks(struct kvm *kvm);
992 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
993 unsigned long *aqm, unsigned long *adm);
994
995 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
996 extern char sie_exit;
997
998 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
999 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
1000
kvm_arch_hardware_disable(void)1001 static inline void kvm_arch_hardware_disable(void) {}
kvm_arch_sync_events(struct kvm * kvm)1002 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
kvm_arch_sched_in(struct kvm_vcpu * vcpu,int cpu)1003 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)1004 static inline void kvm_arch_free_memslot(struct kvm *kvm,
1005 struct kvm_memory_slot *slot) {}
kvm_arch_memslots_updated(struct kvm * kvm,u64 gen)1006 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
kvm_arch_flush_shadow_all(struct kvm * kvm)1007 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
kvm_arch_flush_shadow_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)1008 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
1009 struct kvm_memory_slot *slot) {}
kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)1010 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)1011 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
1012
1013 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
1014
1015 #endif
1016