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 <linux/pci.h>
23 #include <linux/mmu_notifier.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
34 /*
35 * These seem to be used for allocating ->chip in the routing table, which we
36 * don't use. 1 is as small as we can get to reduce the needed memory. If we
37 * need to look at ->chip later on, we'll need to revisit this.
38 */
39 #define KVM_NR_IRQCHIPS 1
40 #define KVM_IRQCHIP_NUM_PINS 1
41 #define KVM_HALT_POLL_NS_DEFAULT 50000
42
43 /* s390-specific vcpu->requests bit members */
44 #define KVM_REQ_ENABLE_IBS KVM_ARCH_REQ(0)
45 #define KVM_REQ_DISABLE_IBS KVM_ARCH_REQ(1)
46 #define KVM_REQ_ICPT_OPEREXC KVM_ARCH_REQ(2)
47 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
48 #define KVM_REQ_STOP_MIGRATION KVM_ARCH_REQ(4)
49 #define KVM_REQ_VSIE_RESTART KVM_ARCH_REQ(5)
50 #define KVM_REQ_REFRESH_GUEST_PREFIX \
51 KVM_ARCH_REQ_FLAGS(6, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
52
53 #define SIGP_CTRL_C 0x80
54 #define SIGP_CTRL_SCN_MASK 0x3f
55
56 union bsca_sigp_ctrl {
57 __u8 value;
58 struct {
59 __u8 c : 1;
60 __u8 r : 1;
61 __u8 scn : 6;
62 };
63 };
64
65 union esca_sigp_ctrl {
66 __u16 value;
67 struct {
68 __u8 c : 1;
69 __u8 reserved: 7;
70 __u8 scn;
71 };
72 };
73
74 struct esca_entry {
75 union esca_sigp_ctrl sigp_ctrl;
76 __u16 reserved1[3];
77 __u64 sda;
78 __u64 reserved2[6];
79 };
80
81 struct bsca_entry {
82 __u8 reserved0;
83 union bsca_sigp_ctrl sigp_ctrl;
84 __u16 reserved[3];
85 __u64 sda;
86 __u64 reserved2[2];
87 };
88
89 union ipte_control {
90 unsigned long val;
91 struct {
92 unsigned long k : 1;
93 unsigned long kh : 31;
94 unsigned long kg : 32;
95 };
96 };
97
98 union sca_utility {
99 __u16 val;
100 struct {
101 __u16 mtcr : 1;
102 __u16 reserved : 15;
103 };
104 };
105
106 struct bsca_block {
107 union ipte_control ipte_control;
108 __u64 reserved[5];
109 __u64 mcn;
110 union sca_utility utility;
111 __u8 reserved2[6];
112 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
113 };
114
115 struct esca_block {
116 union ipte_control ipte_control;
117 __u64 reserved1[6];
118 union sca_utility utility;
119 __u8 reserved2[6];
120 __u64 mcn[4];
121 __u64 reserved3[20];
122 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
123 };
124
125 /*
126 * This struct is used to store some machine check info from lowcore
127 * for machine checks that happen while the guest is running.
128 * This info in host's lowcore might be overwritten by a second machine
129 * check from host when host is in the machine check's high-level handling.
130 * The size is 24 bytes.
131 */
132 struct mcck_volatile_info {
133 __u64 mcic;
134 __u64 failing_storage_address;
135 __u32 ext_damage_code;
136 __u32 reserved;
137 };
138
139 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
140 CR0_MEASUREMENT_ALERT_SUBMASK)
141 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
142 CR14_EXTERNAL_DAMAGE_SUBMASK)
143
144 #define SIDAD_SIZE_MASK 0xff
145 #define sida_addr(sie_block) phys_to_virt((sie_block)->sidad & PAGE_MASK)
146 #define sida_size(sie_block) \
147 ((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE)
148
149 #define CPUSTAT_STOPPED 0x80000000
150 #define CPUSTAT_WAIT 0x10000000
151 #define CPUSTAT_ECALL_PEND 0x08000000
152 #define CPUSTAT_STOP_INT 0x04000000
153 #define CPUSTAT_IO_INT 0x02000000
154 #define CPUSTAT_EXT_INT 0x01000000
155 #define CPUSTAT_RUNNING 0x00800000
156 #define CPUSTAT_RETAINED 0x00400000
157 #define CPUSTAT_TIMING_SUB 0x00020000
158 #define CPUSTAT_SIE_SUB 0x00010000
159 #define CPUSTAT_RRF 0x00008000
160 #define CPUSTAT_SLSV 0x00004000
161 #define CPUSTAT_SLSR 0x00002000
162 #define CPUSTAT_ZARCH 0x00000800
163 #define CPUSTAT_MCDS 0x00000100
164 #define CPUSTAT_KSS 0x00000200
165 #define CPUSTAT_SM 0x00000080
166 #define CPUSTAT_IBS 0x00000040
167 #define CPUSTAT_GED2 0x00000010
168 #define CPUSTAT_G 0x00000008
169 #define CPUSTAT_GED 0x00000004
170 #define CPUSTAT_J 0x00000002
171 #define CPUSTAT_P 0x00000001
172
173 struct kvm_s390_sie_block {
174 atomic_t cpuflags; /* 0x0000 */
175 __u32 : 1; /* 0x0004 */
176 __u32 prefix : 18;
177 __u32 : 1;
178 __u32 ibc : 12;
179 __u8 reserved08[4]; /* 0x0008 */
180 #define PROG_IN_SIE (1<<0)
181 __u32 prog0c; /* 0x000c */
182 union {
183 __u8 reserved10[16]; /* 0x0010 */
184 struct {
185 __u64 pv_handle_cpu;
186 __u64 pv_handle_config;
187 };
188 };
189 #define PROG_BLOCK_SIE (1<<0)
190 #define PROG_REQUEST (1<<1)
191 atomic_t prog20; /* 0x0020 */
192 __u8 reserved24[4]; /* 0x0024 */
193 __u64 cputm; /* 0x0028 */
194 __u64 ckc; /* 0x0030 */
195 __u64 epoch; /* 0x0038 */
196 __u32 svcc; /* 0x0040 */
197 #define LCTL_CR0 0x8000
198 #define LCTL_CR6 0x0200
199 #define LCTL_CR9 0x0040
200 #define LCTL_CR10 0x0020
201 #define LCTL_CR11 0x0010
202 #define LCTL_CR14 0x0002
203 __u16 lctl; /* 0x0044 */
204 __s16 icpua; /* 0x0046 */
205 #define ICTL_OPEREXC 0x80000000
206 #define ICTL_PINT 0x20000000
207 #define ICTL_LPSW 0x00400000
208 #define ICTL_STCTL 0x00040000
209 #define ICTL_ISKE 0x00004000
210 #define ICTL_SSKE 0x00002000
211 #define ICTL_RRBE 0x00001000
212 #define ICTL_TPROT 0x00000200
213 __u32 ictl; /* 0x0048 */
214 #define ECA_CEI 0x80000000
215 #define ECA_IB 0x40000000
216 #define ECA_SIGPI 0x10000000
217 #define ECA_MVPGI 0x01000000
218 #define ECA_AIV 0x00200000
219 #define ECA_VX 0x00020000
220 #define ECA_PROTEXCI 0x00002000
221 #define ECA_APIE 0x00000008
222 #define ECA_SII 0x00000001
223 __u32 eca; /* 0x004c */
224 #define ICPT_INST 0x04
225 #define ICPT_PROGI 0x08
226 #define ICPT_INSTPROGI 0x0C
227 #define ICPT_EXTREQ 0x10
228 #define ICPT_EXTINT 0x14
229 #define ICPT_IOREQ 0x18
230 #define ICPT_WAIT 0x1c
231 #define ICPT_VALIDITY 0x20
232 #define ICPT_STOP 0x28
233 #define ICPT_OPEREXC 0x2C
234 #define ICPT_PARTEXEC 0x38
235 #define ICPT_IOINST 0x40
236 #define ICPT_KSS 0x5c
237 #define ICPT_MCHKREQ 0x60
238 #define ICPT_INT_ENABLE 0x64
239 #define ICPT_PV_INSTR 0x68
240 #define ICPT_PV_NOTIFY 0x6c
241 #define ICPT_PV_PREF 0x70
242 __u8 icptcode; /* 0x0050 */
243 __u8 icptstatus; /* 0x0051 */
244 __u16 ihcpu; /* 0x0052 */
245 __u8 reserved54; /* 0x0054 */
246 #define IICTL_CODE_NONE 0x00
247 #define IICTL_CODE_MCHK 0x01
248 #define IICTL_CODE_EXT 0x02
249 #define IICTL_CODE_IO 0x03
250 #define IICTL_CODE_RESTART 0x04
251 #define IICTL_CODE_SPECIFICATION 0x10
252 #define IICTL_CODE_OPERAND 0x11
253 __u8 iictl; /* 0x0055 */
254 __u16 ipa; /* 0x0056 */
255 __u32 ipb; /* 0x0058 */
256 __u32 scaoh; /* 0x005c */
257 #define FPF_BPBC 0x20
258 __u8 fpf; /* 0x0060 */
259 #define ECB_GS 0x40
260 #define ECB_TE 0x10
261 #define ECB_SPECI 0x08
262 #define ECB_SRSI 0x04
263 #define ECB_HOSTPROTINT 0x02
264 #define ECB_PTF 0x01
265 __u8 ecb; /* 0x0061 */
266 #define ECB2_CMMA 0x80
267 #define ECB2_IEP 0x20
268 #define ECB2_PFMFI 0x08
269 #define ECB2_ESCA 0x04
270 #define ECB2_ZPCI_LSI 0x02
271 __u8 ecb2; /* 0x0062 */
272 #define ECB3_AISI 0x20
273 #define ECB3_AISII 0x10
274 #define ECB3_DEA 0x08
275 #define ECB3_AES 0x04
276 #define ECB3_RI 0x01
277 __u8 ecb3; /* 0x0063 */
278 #define ESCA_SCAOL_MASK ~0x3fU
279 __u32 scaol; /* 0x0064 */
280 __u8 sdf; /* 0x0068 */
281 __u8 epdx; /* 0x0069 */
282 __u8 cpnc; /* 0x006a */
283 __u8 reserved6b; /* 0x006b */
284 __u32 todpr; /* 0x006c */
285 #define GISA_FORMAT1 0x00000001
286 __u32 gd; /* 0x0070 */
287 __u8 reserved74[12]; /* 0x0074 */
288 __u64 mso; /* 0x0080 */
289 __u64 msl; /* 0x0088 */
290 psw_t gpsw; /* 0x0090 */
291 __u64 gg14; /* 0x00a0 */
292 __u64 gg15; /* 0x00a8 */
293 __u8 reservedb0[8]; /* 0x00b0 */
294 #define HPID_KVM 0x4
295 #define HPID_VSIE 0x5
296 __u8 hpid; /* 0x00b8 */
297 __u8 reservedb9[7]; /* 0x00b9 */
298 union {
299 struct {
300 __u32 eiparams; /* 0x00c0 */
301 __u16 extcpuaddr; /* 0x00c4 */
302 __u16 eic; /* 0x00c6 */
303 };
304 __u64 mcic; /* 0x00c0 */
305 } __packed;
306 __u32 reservedc8; /* 0x00c8 */
307 union {
308 struct {
309 __u16 pgmilc; /* 0x00cc */
310 __u16 iprcc; /* 0x00ce */
311 };
312 __u32 edc; /* 0x00cc */
313 } __packed;
314 union {
315 struct {
316 __u32 dxc; /* 0x00d0 */
317 __u16 mcn; /* 0x00d4 */
318 __u8 perc; /* 0x00d6 */
319 __u8 peratmid; /* 0x00d7 */
320 };
321 __u64 faddr; /* 0x00d0 */
322 } __packed;
323 __u64 peraddr; /* 0x00d8 */
324 __u8 eai; /* 0x00e0 */
325 __u8 peraid; /* 0x00e1 */
326 __u8 oai; /* 0x00e2 */
327 __u8 armid; /* 0x00e3 */
328 __u8 reservede4[4]; /* 0x00e4 */
329 union {
330 __u64 tecmc; /* 0x00e8 */
331 struct {
332 __u16 subchannel_id; /* 0x00e8 */
333 __u16 subchannel_nr; /* 0x00ea */
334 __u32 io_int_parm; /* 0x00ec */
335 __u32 io_int_word; /* 0x00f0 */
336 };
337 } __packed;
338 __u8 reservedf4[8]; /* 0x00f4 */
339 #define CRYCB_FORMAT_MASK 0x00000003
340 #define CRYCB_FORMAT0 0x00000000
341 #define CRYCB_FORMAT1 0x00000001
342 #define CRYCB_FORMAT2 0x00000003
343 __u32 crycbd; /* 0x00fc */
344 __u64 gcr[16]; /* 0x0100 */
345 union {
346 __u64 gbea; /* 0x0180 */
347 __u64 sidad;
348 };
349 __u8 reserved188[8]; /* 0x0188 */
350 __u64 sdnxo; /* 0x0190 */
351 __u8 reserved198[8]; /* 0x0198 */
352 __u32 fac; /* 0x01a0 */
353 __u8 reserved1a4[20]; /* 0x01a4 */
354 __u64 cbrlo; /* 0x01b8 */
355 __u8 reserved1c0[8]; /* 0x01c0 */
356 #define ECD_HOSTREGMGMT 0x20000000
357 #define ECD_MEF 0x08000000
358 #define ECD_ETOKENF 0x02000000
359 #define ECD_ECC 0x00200000
360 __u32 ecd; /* 0x01c8 */
361 __u8 reserved1cc[18]; /* 0x01cc */
362 __u64 pp; /* 0x01de */
363 __u8 reserved1e6[2]; /* 0x01e6 */
364 __u64 itdba; /* 0x01e8 */
365 __u64 riccbd; /* 0x01f0 */
366 __u64 gvrd; /* 0x01f8 */
367 } __packed __aligned(512);
368
369 struct kvm_s390_itdb {
370 __u8 data[256];
371 };
372
373 struct sie_page {
374 struct kvm_s390_sie_block sie_block;
375 struct mcck_volatile_info mcck_info; /* 0x0200 */
376 __u8 reserved218[360]; /* 0x0218 */
377 __u64 pv_grregs[16]; /* 0x0380 */
378 __u8 reserved400[512]; /* 0x0400 */
379 struct kvm_s390_itdb itdb; /* 0x0600 */
380 __u8 reserved700[2304]; /* 0x0700 */
381 };
382
383 struct kvm_vcpu_stat {
384 struct kvm_vcpu_stat_generic generic;
385 u64 exit_userspace;
386 u64 exit_null;
387 u64 exit_external_request;
388 u64 exit_io_request;
389 u64 exit_external_interrupt;
390 u64 exit_stop_request;
391 u64 exit_validity;
392 u64 exit_instruction;
393 u64 exit_pei;
394 u64 halt_no_poll_steal;
395 u64 instruction_lctl;
396 u64 instruction_lctlg;
397 u64 instruction_stctl;
398 u64 instruction_stctg;
399 u64 exit_program_interruption;
400 u64 exit_instr_and_program;
401 u64 exit_operation_exception;
402 u64 deliver_ckc;
403 u64 deliver_cputm;
404 u64 deliver_external_call;
405 u64 deliver_emergency_signal;
406 u64 deliver_service_signal;
407 u64 deliver_virtio;
408 u64 deliver_stop_signal;
409 u64 deliver_prefix_signal;
410 u64 deliver_restart_signal;
411 u64 deliver_program;
412 u64 deliver_io;
413 u64 deliver_machine_check;
414 u64 exit_wait_state;
415 u64 inject_ckc;
416 u64 inject_cputm;
417 u64 inject_external_call;
418 u64 inject_emergency_signal;
419 u64 inject_mchk;
420 u64 inject_pfault_init;
421 u64 inject_program;
422 u64 inject_restart;
423 u64 inject_set_prefix;
424 u64 inject_stop_signal;
425 u64 instruction_epsw;
426 u64 instruction_gs;
427 u64 instruction_io_other;
428 u64 instruction_lpsw;
429 u64 instruction_lpswe;
430 u64 instruction_pfmf;
431 u64 instruction_ptff;
432 u64 instruction_sck;
433 u64 instruction_sckpf;
434 u64 instruction_stidp;
435 u64 instruction_spx;
436 u64 instruction_stpx;
437 u64 instruction_stap;
438 u64 instruction_iske;
439 u64 instruction_ri;
440 u64 instruction_rrbe;
441 u64 instruction_sske;
442 u64 instruction_ipte_interlock;
443 u64 instruction_stsi;
444 u64 instruction_stfl;
445 u64 instruction_tb;
446 u64 instruction_tpi;
447 u64 instruction_tprot;
448 u64 instruction_tsch;
449 u64 instruction_sie;
450 u64 instruction_essa;
451 u64 instruction_sthyi;
452 u64 instruction_sigp_sense;
453 u64 instruction_sigp_sense_running;
454 u64 instruction_sigp_external_call;
455 u64 instruction_sigp_emergency;
456 u64 instruction_sigp_cond_emergency;
457 u64 instruction_sigp_start;
458 u64 instruction_sigp_stop;
459 u64 instruction_sigp_stop_store_status;
460 u64 instruction_sigp_store_status;
461 u64 instruction_sigp_store_adtl_status;
462 u64 instruction_sigp_arch;
463 u64 instruction_sigp_prefix;
464 u64 instruction_sigp_restart;
465 u64 instruction_sigp_init_cpu_reset;
466 u64 instruction_sigp_cpu_reset;
467 u64 instruction_sigp_unknown;
468 u64 instruction_diagnose_10;
469 u64 instruction_diagnose_44;
470 u64 instruction_diagnose_9c;
471 u64 diag_9c_ignored;
472 u64 diag_9c_forward;
473 u64 instruction_diagnose_258;
474 u64 instruction_diagnose_308;
475 u64 instruction_diagnose_500;
476 u64 instruction_diagnose_other;
477 u64 pfault_sync;
478 };
479
480 #define PGM_OPERATION 0x01
481 #define PGM_PRIVILEGED_OP 0x02
482 #define PGM_EXECUTE 0x03
483 #define PGM_PROTECTION 0x04
484 #define PGM_ADDRESSING 0x05
485 #define PGM_SPECIFICATION 0x06
486 #define PGM_DATA 0x07
487 #define PGM_FIXED_POINT_OVERFLOW 0x08
488 #define PGM_FIXED_POINT_DIVIDE 0x09
489 #define PGM_DECIMAL_OVERFLOW 0x0a
490 #define PGM_DECIMAL_DIVIDE 0x0b
491 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c
492 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d
493 #define PGM_HFP_SIGNIFICANCE 0x0e
494 #define PGM_HFP_DIVIDE 0x0f
495 #define PGM_SEGMENT_TRANSLATION 0x10
496 #define PGM_PAGE_TRANSLATION 0x11
497 #define PGM_TRANSLATION_SPEC 0x12
498 #define PGM_SPECIAL_OPERATION 0x13
499 #define PGM_OPERAND 0x15
500 #define PGM_TRACE_TABEL 0x16
501 #define PGM_VECTOR_PROCESSING 0x1b
502 #define PGM_SPACE_SWITCH 0x1c
503 #define PGM_HFP_SQUARE_ROOT 0x1d
504 #define PGM_PC_TRANSLATION_SPEC 0x1f
505 #define PGM_AFX_TRANSLATION 0x20
506 #define PGM_ASX_TRANSLATION 0x21
507 #define PGM_LX_TRANSLATION 0x22
508 #define PGM_EX_TRANSLATION 0x23
509 #define PGM_PRIMARY_AUTHORITY 0x24
510 #define PGM_SECONDARY_AUTHORITY 0x25
511 #define PGM_LFX_TRANSLATION 0x26
512 #define PGM_LSX_TRANSLATION 0x27
513 #define PGM_ALET_SPECIFICATION 0x28
514 #define PGM_ALEN_TRANSLATION 0x29
515 #define PGM_ALE_SEQUENCE 0x2a
516 #define PGM_ASTE_VALIDITY 0x2b
517 #define PGM_ASTE_SEQUENCE 0x2c
518 #define PGM_EXTENDED_AUTHORITY 0x2d
519 #define PGM_LSTE_SEQUENCE 0x2e
520 #define PGM_ASTE_INSTANCE 0x2f
521 #define PGM_STACK_FULL 0x30
522 #define PGM_STACK_EMPTY 0x31
523 #define PGM_STACK_SPECIFICATION 0x32
524 #define PGM_STACK_TYPE 0x33
525 #define PGM_STACK_OPERATION 0x34
526 #define PGM_ASCE_TYPE 0x38
527 #define PGM_REGION_FIRST_TRANS 0x39
528 #define PGM_REGION_SECOND_TRANS 0x3a
529 #define PGM_REGION_THIRD_TRANS 0x3b
530 #define PGM_MONITOR 0x40
531 #define PGM_PER 0x80
532 #define PGM_CRYPTO_OPERATION 0x119
533
534 /* irq types in ascend order of priorities */
535 enum irq_types {
536 IRQ_PEND_SET_PREFIX = 0,
537 IRQ_PEND_RESTART,
538 IRQ_PEND_SIGP_STOP,
539 IRQ_PEND_IO_ISC_7,
540 IRQ_PEND_IO_ISC_6,
541 IRQ_PEND_IO_ISC_5,
542 IRQ_PEND_IO_ISC_4,
543 IRQ_PEND_IO_ISC_3,
544 IRQ_PEND_IO_ISC_2,
545 IRQ_PEND_IO_ISC_1,
546 IRQ_PEND_IO_ISC_0,
547 IRQ_PEND_VIRTIO,
548 IRQ_PEND_PFAULT_DONE,
549 IRQ_PEND_PFAULT_INIT,
550 IRQ_PEND_EXT_HOST,
551 IRQ_PEND_EXT_SERVICE,
552 IRQ_PEND_EXT_SERVICE_EV,
553 IRQ_PEND_EXT_TIMING,
554 IRQ_PEND_EXT_CPU_TIMER,
555 IRQ_PEND_EXT_CLOCK_COMP,
556 IRQ_PEND_EXT_EXTERNAL,
557 IRQ_PEND_EXT_EMERGENCY,
558 IRQ_PEND_EXT_MALFUNC,
559 IRQ_PEND_EXT_IRQ_KEY,
560 IRQ_PEND_MCHK_REP,
561 IRQ_PEND_PROG,
562 IRQ_PEND_SVC,
563 IRQ_PEND_MCHK_EX,
564 IRQ_PEND_COUNT
565 };
566
567 /* We have 2M for virtio device descriptor pages. Smallest amount of
568 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
569 */
570 #define KVM_S390_MAX_VIRTIO_IRQS 87381
571
572 /*
573 * Repressible (non-floating) machine check interrupts
574 * subclass bits in MCIC
575 */
576 #define MCHK_EXTD_BIT 58
577 #define MCHK_DEGR_BIT 56
578 #define MCHK_WARN_BIT 55
579 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
580 (1UL << MCHK_EXTD_BIT) | \
581 (1UL << MCHK_WARN_BIT))
582
583 /* Exigent machine check interrupts subclass bits in MCIC */
584 #define MCHK_SD_BIT 63
585 #define MCHK_PD_BIT 62
586 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
587
588 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \
589 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
590 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \
591 (1UL << IRQ_PEND_EXT_MALFUNC) | \
592 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
593 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
594 (1UL << IRQ_PEND_EXT_TIMING) | \
595 (1UL << IRQ_PEND_EXT_HOST) | \
596 (1UL << IRQ_PEND_EXT_SERVICE) | \
597 (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
598 (1UL << IRQ_PEND_VIRTIO) | \
599 (1UL << IRQ_PEND_PFAULT_INIT) | \
600 (1UL << IRQ_PEND_PFAULT_DONE))
601
602 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
603 (1UL << IRQ_PEND_IO_ISC_1) | \
604 (1UL << IRQ_PEND_IO_ISC_2) | \
605 (1UL << IRQ_PEND_IO_ISC_3) | \
606 (1UL << IRQ_PEND_IO_ISC_4) | \
607 (1UL << IRQ_PEND_IO_ISC_5) | \
608 (1UL << IRQ_PEND_IO_ISC_6) | \
609 (1UL << IRQ_PEND_IO_ISC_7))
610
611 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
612 (1UL << IRQ_PEND_MCHK_EX))
613
614 #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER) | \
615 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
616 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
617 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
618 (1UL << IRQ_PEND_EXT_SERVICE) | \
619 (1UL << IRQ_PEND_EXT_SERVICE_EV))
620
621 struct kvm_s390_interrupt_info {
622 struct list_head list;
623 u64 type;
624 union {
625 struct kvm_s390_io_info io;
626 struct kvm_s390_ext_info ext;
627 struct kvm_s390_pgm_info pgm;
628 struct kvm_s390_emerg_info emerg;
629 struct kvm_s390_extcall_info extcall;
630 struct kvm_s390_prefix_info prefix;
631 struct kvm_s390_stop_info stop;
632 struct kvm_s390_mchk_info mchk;
633 };
634 };
635
636 struct kvm_s390_irq_payload {
637 struct kvm_s390_io_info io;
638 struct kvm_s390_ext_info ext;
639 struct kvm_s390_pgm_info pgm;
640 struct kvm_s390_emerg_info emerg;
641 struct kvm_s390_extcall_info extcall;
642 struct kvm_s390_prefix_info prefix;
643 struct kvm_s390_stop_info stop;
644 struct kvm_s390_mchk_info mchk;
645 };
646
647 struct kvm_s390_local_interrupt {
648 spinlock_t lock;
649 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
650 struct kvm_s390_irq_payload irq;
651 unsigned long pending_irqs;
652 };
653
654 #define FIRQ_LIST_IO_ISC_0 0
655 #define FIRQ_LIST_IO_ISC_1 1
656 #define FIRQ_LIST_IO_ISC_2 2
657 #define FIRQ_LIST_IO_ISC_3 3
658 #define FIRQ_LIST_IO_ISC_4 4
659 #define FIRQ_LIST_IO_ISC_5 5
660 #define FIRQ_LIST_IO_ISC_6 6
661 #define FIRQ_LIST_IO_ISC_7 7
662 #define FIRQ_LIST_PFAULT 8
663 #define FIRQ_LIST_VIRTIO 9
664 #define FIRQ_LIST_COUNT 10
665 #define FIRQ_CNTR_IO 0
666 #define FIRQ_CNTR_SERVICE 1
667 #define FIRQ_CNTR_VIRTIO 2
668 #define FIRQ_CNTR_PFAULT 3
669 #define FIRQ_MAX_COUNT 4
670
671 /* mask the AIS mode for a given ISC */
672 #define AIS_MODE_MASK(isc) (0x80 >> isc)
673
674 #define KVM_S390_AIS_MODE_ALL 0
675 #define KVM_S390_AIS_MODE_SINGLE 1
676
677 struct kvm_s390_float_interrupt {
678 unsigned long pending_irqs;
679 unsigned long masked_irqs;
680 spinlock_t lock;
681 struct list_head lists[FIRQ_LIST_COUNT];
682 int counters[FIRQ_MAX_COUNT];
683 struct kvm_s390_mchk_info mchk;
684 struct kvm_s390_ext_info srv_signal;
685 int next_rr_cpu;
686 struct mutex ais_lock;
687 u8 simm;
688 u8 nimm;
689 };
690
691 struct kvm_hw_wp_info_arch {
692 unsigned long addr;
693 unsigned long phys_addr;
694 int len;
695 char *old_data;
696 };
697
698 struct kvm_hw_bp_info_arch {
699 unsigned long addr;
700 int len;
701 };
702
703 /*
704 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
705 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
706 * arch/s390/include/uapi/asm/kvm.h
707 */
708 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
709
710 #define guestdbg_enabled(vcpu) \
711 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
712 #define guestdbg_sstep_enabled(vcpu) \
713 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
714 #define guestdbg_hw_bp_enabled(vcpu) \
715 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
716 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
717 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
718
719 #define KVM_GUESTDBG_VALID_MASK \
720 (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\
721 KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING)
722
723 struct kvm_guestdbg_info_arch {
724 unsigned long cr0;
725 unsigned long cr9;
726 unsigned long cr10;
727 unsigned long cr11;
728 struct kvm_hw_bp_info_arch *hw_bp_info;
729 struct kvm_hw_wp_info_arch *hw_wp_info;
730 int nr_hw_bp;
731 int nr_hw_wp;
732 unsigned long last_bp;
733 };
734
735 struct kvm_s390_pv_vcpu {
736 u64 handle;
737 unsigned long stor_base;
738 };
739
740 struct kvm_vcpu_arch {
741 struct kvm_s390_sie_block *sie_block;
742 /* if vsie is active, currently executed shadow sie control block */
743 struct kvm_s390_sie_block *vsie_block;
744 unsigned int host_acrs[NUM_ACRS];
745 struct gs_cb *host_gscb;
746 struct fpu host_fpregs;
747 struct kvm_s390_local_interrupt local_int;
748 struct hrtimer ckc_timer;
749 struct kvm_s390_pgm_info pgm;
750 struct gmap *gmap;
751 /* backup location for the currently enabled gmap when scheduled out */
752 struct gmap *enabled_gmap;
753 struct kvm_guestdbg_info_arch guestdbg;
754 unsigned long pfault_token;
755 unsigned long pfault_select;
756 unsigned long pfault_compare;
757 bool cputm_enabled;
758 /*
759 * The seqcount protects updates to cputm_start and sie_block.cputm,
760 * this way we can have non-blocking reads with consistent values.
761 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
762 * values and to start/stop/enable/disable cpu timer accounting.
763 */
764 seqcount_t cputm_seqcount;
765 __u64 cputm_start;
766 bool gs_enabled;
767 bool skey_enabled;
768 struct kvm_s390_pv_vcpu pv;
769 union diag318_info diag318_info;
770 };
771
772 struct kvm_vm_stat {
773 struct kvm_vm_stat_generic generic;
774 u64 inject_io;
775 u64 inject_float_mchk;
776 u64 inject_pfault_done;
777 u64 inject_service_signal;
778 u64 inject_virtio;
779 u64 aen_forward;
780 u64 gmap_shadow_create;
781 u64 gmap_shadow_reuse;
782 u64 gmap_shadow_r1_entry;
783 u64 gmap_shadow_r2_entry;
784 u64 gmap_shadow_r3_entry;
785 u64 gmap_shadow_sg_entry;
786 u64 gmap_shadow_pg_entry;
787 };
788
789 struct kvm_arch_memory_slot {
790 };
791
792 struct s390_map_info {
793 struct list_head list;
794 __u64 guest_addr;
795 __u64 addr;
796 struct page *page;
797 };
798
799 struct s390_io_adapter {
800 unsigned int id;
801 int isc;
802 bool maskable;
803 bool masked;
804 bool swap;
805 bool suppressible;
806 };
807
808 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
809 #define MAX_S390_ADAPTER_MAPS 256
810
811 /* maximum size of facilities and facility mask is 2k bytes */
812 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
813 #define S390_ARCH_FAC_LIST_SIZE_U64 \
814 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
815 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
816 #define S390_ARCH_FAC_MASK_SIZE_U64 \
817 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
818
819 struct kvm_s390_cpu_model {
820 /* facility mask supported by kvm & hosting machine */
821 __u64 fac_mask[S390_ARCH_FAC_MASK_SIZE_U64];
822 struct kvm_s390_vm_cpu_subfunc subfuncs;
823 /* facility list requested by guest (in dma page) */
824 __u64 *fac_list;
825 u64 cpuid;
826 unsigned short ibc;
827 /* subset of available UV-features for pv-guests enabled by user space */
828 struct kvm_s390_vm_cpu_uv_feat uv_feat_guest;
829 };
830
831 typedef int (*crypto_hook)(struct kvm_vcpu *vcpu);
832
833 struct kvm_s390_crypto {
834 struct kvm_s390_crypto_cb *crycb;
835 struct rw_semaphore pqap_hook_rwsem;
836 crypto_hook *pqap_hook;
837 __u32 crycbd;
838 __u8 aes_kw;
839 __u8 dea_kw;
840 __u8 apie;
841 };
842
843 #define APCB0_MASK_SIZE 1
844 struct kvm_s390_apcb0 {
845 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */
846 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */
847 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */
848 __u64 reserved18; /* 0x0018 */
849 };
850
851 #define APCB1_MASK_SIZE 4
852 struct kvm_s390_apcb1 {
853 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */
854 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */
855 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */
856 __u64 reserved60[4]; /* 0x0060 */
857 };
858
859 struct kvm_s390_crypto_cb {
860 struct kvm_s390_apcb0 apcb0; /* 0x0000 */
861 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */
862 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */
863 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */
864 struct kvm_s390_apcb1 apcb1; /* 0x0080 */
865 };
866
867 struct kvm_s390_gisa {
868 union {
869 struct { /* common to all formats */
870 u32 next_alert;
871 u8 ipm;
872 u8 reserved01[2];
873 u8 iam;
874 };
875 struct { /* format 0 */
876 u32 next_alert;
877 u8 ipm;
878 u8 reserved01;
879 u8 : 6;
880 u8 g : 1;
881 u8 c : 1;
882 u8 iam;
883 u8 reserved02[4];
884 u32 airq_count;
885 } g0;
886 struct { /* format 1 */
887 u32 next_alert;
888 u8 ipm;
889 u8 simm;
890 u8 nimm;
891 u8 iam;
892 u8 aism[8];
893 u8 : 6;
894 u8 g : 1;
895 u8 c : 1;
896 u8 reserved03[11];
897 u32 airq_count;
898 } g1;
899 struct {
900 u64 word[4];
901 } u64;
902 };
903 };
904
905 struct kvm_s390_gib {
906 u32 alert_list_origin;
907 u32 reserved01;
908 u8:5;
909 u8 nisc:3;
910 u8 reserved03[3];
911 u32 reserved04[5];
912 };
913
914 /*
915 * sie_page2 has to be allocated as DMA because fac_list, crycb and
916 * gisa need 31bit addresses in the sie control block.
917 */
918 struct sie_page2 {
919 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */
920 struct kvm_s390_crypto_cb crycb; /* 0x0800 */
921 struct kvm_s390_gisa gisa; /* 0x0900 */
922 struct kvm *kvm; /* 0x0920 */
923 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */
924 };
925
926 struct kvm_s390_vsie {
927 struct mutex mutex;
928 struct radix_tree_root addr_to_page;
929 int page_count;
930 int next;
931 struct page *pages[KVM_MAX_VCPUS];
932 };
933
934 struct kvm_s390_gisa_iam {
935 u8 mask;
936 spinlock_t ref_lock;
937 u32 ref_count[MAX_ISC + 1];
938 };
939
940 struct kvm_s390_gisa_interrupt {
941 struct kvm_s390_gisa *origin;
942 struct kvm_s390_gisa_iam alert;
943 struct hrtimer timer;
944 u64 expires;
945 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
946 };
947
948 struct kvm_s390_pv {
949 u64 handle;
950 u64 guest_len;
951 unsigned long stor_base;
952 void *stor_var;
953 bool dumping;
954 void *set_aside;
955 struct list_head need_cleanup;
956 struct mmu_notifier mmu_notifier;
957 };
958
959 struct kvm_arch{
960 void *sca;
961 int use_esca;
962 rwlock_t sca_lock;
963 debug_info_t *dbf;
964 struct kvm_s390_float_interrupt float_int;
965 struct kvm_device *flic;
966 struct gmap *gmap;
967 unsigned long mem_limit;
968 int css_support;
969 int use_irqchip;
970 int use_cmma;
971 int use_pfmfi;
972 int use_skf;
973 int use_zpci_interp;
974 int user_cpu_state_ctrl;
975 int user_sigp;
976 int user_stsi;
977 int user_instr0;
978 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
979 wait_queue_head_t ipte_wq;
980 int ipte_lock_count;
981 struct mutex ipte_mutex;
982 spinlock_t start_stop_lock;
983 struct sie_page2 *sie_page2;
984 struct kvm_s390_cpu_model model;
985 struct kvm_s390_crypto crypto;
986 struct kvm_s390_vsie vsie;
987 u8 epdx;
988 u64 epoch;
989 int migration_mode;
990 atomic64_t cmma_dirty_pages;
991 /* subset of available cpu features enabled by user space */
992 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
993 /* indexed by vcpu_idx */
994 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
995 struct kvm_s390_gisa_interrupt gisa_int;
996 struct kvm_s390_pv pv;
997 struct list_head kzdev_list;
998 spinlock_t kzdev_list_lock;
999 };
1000
1001 #define KVM_HVA_ERR_BAD (-1UL)
1002 #define KVM_HVA_ERR_RO_BAD (-2UL)
1003
kvm_is_error_hva(unsigned long addr)1004 static inline bool kvm_is_error_hva(unsigned long addr)
1005 {
1006 return IS_ERR_VALUE(addr);
1007 }
1008
1009 #define ASYNC_PF_PER_VCPU 64
1010 struct kvm_arch_async_pf {
1011 unsigned long pfault_token;
1012 };
1013
1014 bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
1015
1016 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1017 struct kvm_async_pf *work);
1018
1019 bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1020 struct kvm_async_pf *work);
1021
1022 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1023 struct kvm_async_pf *work);
1024
kvm_arch_async_page_present_queued(struct kvm_vcpu * vcpu)1025 static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
1026
1027 void kvm_arch_crypto_clear_masks(struct kvm *kvm);
1028 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
1029 unsigned long *aqm, unsigned long *adm);
1030
1031 int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa);
1032
sie64a(struct kvm_s390_sie_block * sie_block,u64 * rsa)1033 static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa)
1034 {
1035 return __sie64a(virt_to_phys(sie_block), sie_block, rsa);
1036 }
1037
1038 extern char sie_exit;
1039
1040 bool kvm_s390_pv_is_protected(struct kvm *kvm);
1041 bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu);
1042
1043 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
1044 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
1045
kvm_arch_sync_events(struct kvm * kvm)1046 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
kvm_arch_sched_in(struct kvm_vcpu * vcpu,int cpu)1047 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)1048 static inline void kvm_arch_free_memslot(struct kvm *kvm,
1049 struct kvm_memory_slot *slot) {}
kvm_arch_memslots_updated(struct kvm * kvm,u64 gen)1050 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
kvm_arch_flush_shadow_all(struct kvm * kvm)1051 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
kvm_arch_flush_shadow_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)1052 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
1053 struct kvm_memory_slot *slot) {}
kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)1054 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)1055 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
1056
1057 #define __KVM_HAVE_ARCH_VM_FREE
1058 void kvm_arch_free_vm(struct kvm *kvm);
1059
1060 struct zpci_kvm_hook {
1061 int (*kvm_register)(void *opaque, struct kvm *kvm);
1062 void (*kvm_unregister)(void *opaque);
1063 };
1064
1065 extern struct zpci_kvm_hook zpci_kvm_hook;
1066
1067 #endif
1068