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 CPUSTAT_STOPPED 0x80000000
126 #define CPUSTAT_WAIT 0x10000000
127 #define CPUSTAT_ECALL_PEND 0x08000000
128 #define CPUSTAT_STOP_INT 0x04000000
129 #define CPUSTAT_IO_INT 0x02000000
130 #define CPUSTAT_EXT_INT 0x01000000
131 #define CPUSTAT_RUNNING 0x00800000
132 #define CPUSTAT_RETAINED 0x00400000
133 #define CPUSTAT_TIMING_SUB 0x00020000
134 #define CPUSTAT_SIE_SUB 0x00010000
135 #define CPUSTAT_RRF 0x00008000
136 #define CPUSTAT_SLSV 0x00004000
137 #define CPUSTAT_SLSR 0x00002000
138 #define CPUSTAT_ZARCH 0x00000800
139 #define CPUSTAT_MCDS 0x00000100
140 #define CPUSTAT_KSS 0x00000200
141 #define CPUSTAT_SM 0x00000080
142 #define CPUSTAT_IBS 0x00000040
143 #define CPUSTAT_GED2 0x00000010
144 #define CPUSTAT_G 0x00000008
145 #define CPUSTAT_GED 0x00000004
146 #define CPUSTAT_J 0x00000002
147 #define CPUSTAT_P 0x00000001
148
149 struct kvm_s390_sie_block {
150 atomic_t cpuflags; /* 0x0000 */
151 __u32 : 1; /* 0x0004 */
152 __u32 prefix : 18;
153 __u32 : 1;
154 __u32 ibc : 12;
155 __u8 reserved08[4]; /* 0x0008 */
156 #define PROG_IN_SIE (1<<0)
157 __u32 prog0c; /* 0x000c */
158 __u8 reserved10[16]; /* 0x0010 */
159 #define PROG_BLOCK_SIE (1<<0)
160 #define PROG_REQUEST (1<<1)
161 atomic_t prog20; /* 0x0020 */
162 __u8 reserved24[4]; /* 0x0024 */
163 __u64 cputm; /* 0x0028 */
164 __u64 ckc; /* 0x0030 */
165 __u64 epoch; /* 0x0038 */
166 __u32 svcc; /* 0x0040 */
167 #define LCTL_CR0 0x8000
168 #define LCTL_CR6 0x0200
169 #define LCTL_CR9 0x0040
170 #define LCTL_CR10 0x0020
171 #define LCTL_CR11 0x0010
172 #define LCTL_CR14 0x0002
173 __u16 lctl; /* 0x0044 */
174 __s16 icpua; /* 0x0046 */
175 #define ICTL_OPEREXC 0x80000000
176 #define ICTL_PINT 0x20000000
177 #define ICTL_LPSW 0x00400000
178 #define ICTL_STCTL 0x00040000
179 #define ICTL_ISKE 0x00004000
180 #define ICTL_SSKE 0x00002000
181 #define ICTL_RRBE 0x00001000
182 #define ICTL_TPROT 0x00000200
183 __u32 ictl; /* 0x0048 */
184 #define ECA_CEI 0x80000000
185 #define ECA_IB 0x40000000
186 #define ECA_SIGPI 0x10000000
187 #define ECA_MVPGI 0x01000000
188 #define ECA_AIV 0x00200000
189 #define ECA_VX 0x00020000
190 #define ECA_PROTEXCI 0x00002000
191 #define ECA_APIE 0x00000008
192 #define ECA_SII 0x00000001
193 __u32 eca; /* 0x004c */
194 #define ICPT_INST 0x04
195 #define ICPT_PROGI 0x08
196 #define ICPT_INSTPROGI 0x0C
197 #define ICPT_EXTREQ 0x10
198 #define ICPT_EXTINT 0x14
199 #define ICPT_IOREQ 0x18
200 #define ICPT_WAIT 0x1c
201 #define ICPT_VALIDITY 0x20
202 #define ICPT_STOP 0x28
203 #define ICPT_OPEREXC 0x2C
204 #define ICPT_PARTEXEC 0x38
205 #define ICPT_IOINST 0x40
206 #define ICPT_KSS 0x5c
207 __u8 icptcode; /* 0x0050 */
208 __u8 icptstatus; /* 0x0051 */
209 __u16 ihcpu; /* 0x0052 */
210 __u8 reserved54[2]; /* 0x0054 */
211 __u16 ipa; /* 0x0056 */
212 __u32 ipb; /* 0x0058 */
213 __u32 scaoh; /* 0x005c */
214 #define FPF_BPBC 0x20
215 __u8 fpf; /* 0x0060 */
216 #define ECB_GS 0x40
217 #define ECB_TE 0x10
218 #define ECB_SRSI 0x04
219 #define ECB_HOSTPROTINT 0x02
220 __u8 ecb; /* 0x0061 */
221 #define ECB2_CMMA 0x80
222 #define ECB2_IEP 0x20
223 #define ECB2_PFMFI 0x08
224 #define ECB2_ESCA 0x04
225 __u8 ecb2; /* 0x0062 */
226 #define ECB3_DEA 0x08
227 #define ECB3_AES 0x04
228 #define ECB3_RI 0x01
229 __u8 ecb3; /* 0x0063 */
230 __u32 scaol; /* 0x0064 */
231 __u8 reserved68; /* 0x0068 */
232 __u8 epdx; /* 0x0069 */
233 __u8 reserved6a[2]; /* 0x006a */
234 __u32 todpr; /* 0x006c */
235 #define GISA_FORMAT1 0x00000001
236 __u32 gd; /* 0x0070 */
237 __u8 reserved74[12]; /* 0x0074 */
238 __u64 mso; /* 0x0080 */
239 __u64 msl; /* 0x0088 */
240 psw_t gpsw; /* 0x0090 */
241 __u64 gg14; /* 0x00a0 */
242 __u64 gg15; /* 0x00a8 */
243 __u8 reservedb0[8]; /* 0x00b0 */
244 #define HPID_KVM 0x4
245 #define HPID_VSIE 0x5
246 __u8 hpid; /* 0x00b8 */
247 __u8 reservedb9[11]; /* 0x00b9 */
248 __u16 extcpuaddr; /* 0x00c4 */
249 __u16 eic; /* 0x00c6 */
250 __u32 reservedc8; /* 0x00c8 */
251 __u16 pgmilc; /* 0x00cc */
252 __u16 iprcc; /* 0x00ce */
253 __u32 dxc; /* 0x00d0 */
254 __u16 mcn; /* 0x00d4 */
255 __u8 perc; /* 0x00d6 */
256 __u8 peratmid; /* 0x00d7 */
257 __u64 peraddr; /* 0x00d8 */
258 __u8 eai; /* 0x00e0 */
259 __u8 peraid; /* 0x00e1 */
260 __u8 oai; /* 0x00e2 */
261 __u8 armid; /* 0x00e3 */
262 __u8 reservede4[4]; /* 0x00e4 */
263 __u64 tecmc; /* 0x00e8 */
264 __u8 reservedf0[12]; /* 0x00f0 */
265 #define CRYCB_FORMAT_MASK 0x00000003
266 #define CRYCB_FORMAT0 0x00000000
267 #define CRYCB_FORMAT1 0x00000001
268 #define CRYCB_FORMAT2 0x00000003
269 __u32 crycbd; /* 0x00fc */
270 __u64 gcr[16]; /* 0x0100 */
271 __u64 gbea; /* 0x0180 */
272 __u8 reserved188[8]; /* 0x0188 */
273 __u64 sdnxo; /* 0x0190 */
274 __u8 reserved198[8]; /* 0x0198 */
275 __u32 fac; /* 0x01a0 */
276 __u8 reserved1a4[20]; /* 0x01a4 */
277 __u64 cbrlo; /* 0x01b8 */
278 __u8 reserved1c0[8]; /* 0x01c0 */
279 #define ECD_HOSTREGMGMT 0x20000000
280 #define ECD_MEF 0x08000000
281 #define ECD_ETOKENF 0x02000000
282 #define ECD_ECC 0x00200000
283 __u32 ecd; /* 0x01c8 */
284 __u8 reserved1cc[18]; /* 0x01cc */
285 __u64 pp; /* 0x01de */
286 __u8 reserved1e6[2]; /* 0x01e6 */
287 __u64 itdba; /* 0x01e8 */
288 __u64 riccbd; /* 0x01f0 */
289 __u64 gvrd; /* 0x01f8 */
290 } __attribute__((packed));
291
292 struct kvm_s390_itdb {
293 __u8 data[256];
294 };
295
296 struct sie_page {
297 struct kvm_s390_sie_block sie_block;
298 struct mcck_volatile_info mcck_info; /* 0x0200 */
299 __u8 reserved218[1000]; /* 0x0218 */
300 struct kvm_s390_itdb itdb; /* 0x0600 */
301 __u8 reserved700[2304]; /* 0x0700 */
302 };
303
304 struct kvm_vcpu_stat {
305 u64 exit_userspace;
306 u64 exit_null;
307 u64 exit_external_request;
308 u64 exit_io_request;
309 u64 exit_external_interrupt;
310 u64 exit_stop_request;
311 u64 exit_validity;
312 u64 exit_instruction;
313 u64 exit_pei;
314 u64 halt_successful_poll;
315 u64 halt_attempted_poll;
316 u64 halt_poll_invalid;
317 u64 halt_no_poll_steal;
318 u64 halt_wakeup;
319 u64 instruction_lctl;
320 u64 instruction_lctlg;
321 u64 instruction_stctl;
322 u64 instruction_stctg;
323 u64 exit_program_interruption;
324 u64 exit_instr_and_program;
325 u64 exit_operation_exception;
326 u64 deliver_ckc;
327 u64 deliver_cputm;
328 u64 deliver_external_call;
329 u64 deliver_emergency_signal;
330 u64 deliver_service_signal;
331 u64 deliver_virtio;
332 u64 deliver_stop_signal;
333 u64 deliver_prefix_signal;
334 u64 deliver_restart_signal;
335 u64 deliver_program;
336 u64 deliver_io;
337 u64 deliver_machine_check;
338 u64 exit_wait_state;
339 u64 inject_ckc;
340 u64 inject_cputm;
341 u64 inject_external_call;
342 u64 inject_emergency_signal;
343 u64 inject_mchk;
344 u64 inject_pfault_init;
345 u64 inject_program;
346 u64 inject_restart;
347 u64 inject_set_prefix;
348 u64 inject_stop_signal;
349 u64 instruction_epsw;
350 u64 instruction_gs;
351 u64 instruction_io_other;
352 u64 instruction_lpsw;
353 u64 instruction_lpswe;
354 u64 instruction_pfmf;
355 u64 instruction_ptff;
356 u64 instruction_sck;
357 u64 instruction_sckpf;
358 u64 instruction_stidp;
359 u64 instruction_spx;
360 u64 instruction_stpx;
361 u64 instruction_stap;
362 u64 instruction_iske;
363 u64 instruction_ri;
364 u64 instruction_rrbe;
365 u64 instruction_sske;
366 u64 instruction_ipte_interlock;
367 u64 instruction_stsi;
368 u64 instruction_stfl;
369 u64 instruction_tb;
370 u64 instruction_tpi;
371 u64 instruction_tprot;
372 u64 instruction_tsch;
373 u64 instruction_sie;
374 u64 instruction_essa;
375 u64 instruction_sthyi;
376 u64 instruction_sigp_sense;
377 u64 instruction_sigp_sense_running;
378 u64 instruction_sigp_external_call;
379 u64 instruction_sigp_emergency;
380 u64 instruction_sigp_cond_emergency;
381 u64 instruction_sigp_start;
382 u64 instruction_sigp_stop;
383 u64 instruction_sigp_stop_store_status;
384 u64 instruction_sigp_store_status;
385 u64 instruction_sigp_store_adtl_status;
386 u64 instruction_sigp_arch;
387 u64 instruction_sigp_prefix;
388 u64 instruction_sigp_restart;
389 u64 instruction_sigp_init_cpu_reset;
390 u64 instruction_sigp_cpu_reset;
391 u64 instruction_sigp_unknown;
392 u64 diagnose_10;
393 u64 diagnose_44;
394 u64 diagnose_9c;
395 u64 diagnose_258;
396 u64 diagnose_308;
397 u64 diagnose_500;
398 u64 diagnose_other;
399 };
400
401 #define PGM_OPERATION 0x01
402 #define PGM_PRIVILEGED_OP 0x02
403 #define PGM_EXECUTE 0x03
404 #define PGM_PROTECTION 0x04
405 #define PGM_ADDRESSING 0x05
406 #define PGM_SPECIFICATION 0x06
407 #define PGM_DATA 0x07
408 #define PGM_FIXED_POINT_OVERFLOW 0x08
409 #define PGM_FIXED_POINT_DIVIDE 0x09
410 #define PGM_DECIMAL_OVERFLOW 0x0a
411 #define PGM_DECIMAL_DIVIDE 0x0b
412 #define PGM_HFP_EXPONENT_OVERFLOW 0x0c
413 #define PGM_HFP_EXPONENT_UNDERFLOW 0x0d
414 #define PGM_HFP_SIGNIFICANCE 0x0e
415 #define PGM_HFP_DIVIDE 0x0f
416 #define PGM_SEGMENT_TRANSLATION 0x10
417 #define PGM_PAGE_TRANSLATION 0x11
418 #define PGM_TRANSLATION_SPEC 0x12
419 #define PGM_SPECIAL_OPERATION 0x13
420 #define PGM_OPERAND 0x15
421 #define PGM_TRACE_TABEL 0x16
422 #define PGM_VECTOR_PROCESSING 0x1b
423 #define PGM_SPACE_SWITCH 0x1c
424 #define PGM_HFP_SQUARE_ROOT 0x1d
425 #define PGM_PC_TRANSLATION_SPEC 0x1f
426 #define PGM_AFX_TRANSLATION 0x20
427 #define PGM_ASX_TRANSLATION 0x21
428 #define PGM_LX_TRANSLATION 0x22
429 #define PGM_EX_TRANSLATION 0x23
430 #define PGM_PRIMARY_AUTHORITY 0x24
431 #define PGM_SECONDARY_AUTHORITY 0x25
432 #define PGM_LFX_TRANSLATION 0x26
433 #define PGM_LSX_TRANSLATION 0x27
434 #define PGM_ALET_SPECIFICATION 0x28
435 #define PGM_ALEN_TRANSLATION 0x29
436 #define PGM_ALE_SEQUENCE 0x2a
437 #define PGM_ASTE_VALIDITY 0x2b
438 #define PGM_ASTE_SEQUENCE 0x2c
439 #define PGM_EXTENDED_AUTHORITY 0x2d
440 #define PGM_LSTE_SEQUENCE 0x2e
441 #define PGM_ASTE_INSTANCE 0x2f
442 #define PGM_STACK_FULL 0x30
443 #define PGM_STACK_EMPTY 0x31
444 #define PGM_STACK_SPECIFICATION 0x32
445 #define PGM_STACK_TYPE 0x33
446 #define PGM_STACK_OPERATION 0x34
447 #define PGM_ASCE_TYPE 0x38
448 #define PGM_REGION_FIRST_TRANS 0x39
449 #define PGM_REGION_SECOND_TRANS 0x3a
450 #define PGM_REGION_THIRD_TRANS 0x3b
451 #define PGM_MONITOR 0x40
452 #define PGM_PER 0x80
453 #define PGM_CRYPTO_OPERATION 0x119
454
455 /* irq types in ascend order of priorities */
456 enum irq_types {
457 IRQ_PEND_SET_PREFIX = 0,
458 IRQ_PEND_RESTART,
459 IRQ_PEND_SIGP_STOP,
460 IRQ_PEND_IO_ISC_7,
461 IRQ_PEND_IO_ISC_6,
462 IRQ_PEND_IO_ISC_5,
463 IRQ_PEND_IO_ISC_4,
464 IRQ_PEND_IO_ISC_3,
465 IRQ_PEND_IO_ISC_2,
466 IRQ_PEND_IO_ISC_1,
467 IRQ_PEND_IO_ISC_0,
468 IRQ_PEND_VIRTIO,
469 IRQ_PEND_PFAULT_DONE,
470 IRQ_PEND_PFAULT_INIT,
471 IRQ_PEND_EXT_HOST,
472 IRQ_PEND_EXT_SERVICE,
473 IRQ_PEND_EXT_TIMING,
474 IRQ_PEND_EXT_CPU_TIMER,
475 IRQ_PEND_EXT_CLOCK_COMP,
476 IRQ_PEND_EXT_EXTERNAL,
477 IRQ_PEND_EXT_EMERGENCY,
478 IRQ_PEND_EXT_MALFUNC,
479 IRQ_PEND_EXT_IRQ_KEY,
480 IRQ_PEND_MCHK_REP,
481 IRQ_PEND_PROG,
482 IRQ_PEND_SVC,
483 IRQ_PEND_MCHK_EX,
484 IRQ_PEND_COUNT
485 };
486
487 /* We have 2M for virtio device descriptor pages. Smallest amount of
488 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
489 */
490 #define KVM_S390_MAX_VIRTIO_IRQS 87381
491
492 /*
493 * Repressible (non-floating) machine check interrupts
494 * subclass bits in MCIC
495 */
496 #define MCHK_EXTD_BIT 58
497 #define MCHK_DEGR_BIT 56
498 #define MCHK_WARN_BIT 55
499 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
500 (1UL << MCHK_EXTD_BIT) | \
501 (1UL << MCHK_WARN_BIT))
502
503 /* Exigent machine check interrupts subclass bits in MCIC */
504 #define MCHK_SD_BIT 63
505 #define MCHK_PD_BIT 62
506 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
507
508 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \
509 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
510 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \
511 (1UL << IRQ_PEND_EXT_MALFUNC) | \
512 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
513 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
514 (1UL << IRQ_PEND_EXT_TIMING) | \
515 (1UL << IRQ_PEND_EXT_HOST) | \
516 (1UL << IRQ_PEND_EXT_SERVICE) | \
517 (1UL << IRQ_PEND_VIRTIO) | \
518 (1UL << IRQ_PEND_PFAULT_INIT) | \
519 (1UL << IRQ_PEND_PFAULT_DONE))
520
521 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
522 (1UL << IRQ_PEND_IO_ISC_1) | \
523 (1UL << IRQ_PEND_IO_ISC_2) | \
524 (1UL << IRQ_PEND_IO_ISC_3) | \
525 (1UL << IRQ_PEND_IO_ISC_4) | \
526 (1UL << IRQ_PEND_IO_ISC_5) | \
527 (1UL << IRQ_PEND_IO_ISC_6) | \
528 (1UL << IRQ_PEND_IO_ISC_7))
529
530 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
531 (1UL << IRQ_PEND_MCHK_EX))
532
533 struct kvm_s390_interrupt_info {
534 struct list_head list;
535 u64 type;
536 union {
537 struct kvm_s390_io_info io;
538 struct kvm_s390_ext_info ext;
539 struct kvm_s390_pgm_info pgm;
540 struct kvm_s390_emerg_info emerg;
541 struct kvm_s390_extcall_info extcall;
542 struct kvm_s390_prefix_info prefix;
543 struct kvm_s390_stop_info stop;
544 struct kvm_s390_mchk_info mchk;
545 };
546 };
547
548 struct kvm_s390_irq_payload {
549 struct kvm_s390_io_info io;
550 struct kvm_s390_ext_info ext;
551 struct kvm_s390_pgm_info pgm;
552 struct kvm_s390_emerg_info emerg;
553 struct kvm_s390_extcall_info extcall;
554 struct kvm_s390_prefix_info prefix;
555 struct kvm_s390_stop_info stop;
556 struct kvm_s390_mchk_info mchk;
557 };
558
559 struct kvm_s390_local_interrupt {
560 spinlock_t lock;
561 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
562 struct kvm_s390_irq_payload irq;
563 unsigned long pending_irqs;
564 };
565
566 #define FIRQ_LIST_IO_ISC_0 0
567 #define FIRQ_LIST_IO_ISC_1 1
568 #define FIRQ_LIST_IO_ISC_2 2
569 #define FIRQ_LIST_IO_ISC_3 3
570 #define FIRQ_LIST_IO_ISC_4 4
571 #define FIRQ_LIST_IO_ISC_5 5
572 #define FIRQ_LIST_IO_ISC_6 6
573 #define FIRQ_LIST_IO_ISC_7 7
574 #define FIRQ_LIST_PFAULT 8
575 #define FIRQ_LIST_VIRTIO 9
576 #define FIRQ_LIST_COUNT 10
577 #define FIRQ_CNTR_IO 0
578 #define FIRQ_CNTR_SERVICE 1
579 #define FIRQ_CNTR_VIRTIO 2
580 #define FIRQ_CNTR_PFAULT 3
581 #define FIRQ_MAX_COUNT 4
582
583 /* mask the AIS mode for a given ISC */
584 #define AIS_MODE_MASK(isc) (0x80 >> isc)
585
586 #define KVM_S390_AIS_MODE_ALL 0
587 #define KVM_S390_AIS_MODE_SINGLE 1
588
589 struct kvm_s390_float_interrupt {
590 unsigned long pending_irqs;
591 spinlock_t lock;
592 struct list_head lists[FIRQ_LIST_COUNT];
593 int counters[FIRQ_MAX_COUNT];
594 struct kvm_s390_mchk_info mchk;
595 struct kvm_s390_ext_info srv_signal;
596 int next_rr_cpu;
597 struct mutex ais_lock;
598 u8 simm;
599 u8 nimm;
600 };
601
602 struct kvm_hw_wp_info_arch {
603 unsigned long addr;
604 unsigned long phys_addr;
605 int len;
606 char *old_data;
607 };
608
609 struct kvm_hw_bp_info_arch {
610 unsigned long addr;
611 int len;
612 };
613
614 /*
615 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
616 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
617 * arch/s390/include/uapi/asm/kvm.h
618 */
619 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
620
621 #define guestdbg_enabled(vcpu) \
622 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
623 #define guestdbg_sstep_enabled(vcpu) \
624 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
625 #define guestdbg_hw_bp_enabled(vcpu) \
626 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
627 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
628 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
629
630 struct kvm_guestdbg_info_arch {
631 unsigned long cr0;
632 unsigned long cr9;
633 unsigned long cr10;
634 unsigned long cr11;
635 struct kvm_hw_bp_info_arch *hw_bp_info;
636 struct kvm_hw_wp_info_arch *hw_wp_info;
637 int nr_hw_bp;
638 int nr_hw_wp;
639 unsigned long last_bp;
640 };
641
642 struct kvm_vcpu_arch {
643 struct kvm_s390_sie_block *sie_block;
644 /* if vsie is active, currently executed shadow sie control block */
645 struct kvm_s390_sie_block *vsie_block;
646 unsigned int host_acrs[NUM_ACRS];
647 struct gs_cb *host_gscb;
648 struct fpu host_fpregs;
649 struct kvm_s390_local_interrupt local_int;
650 struct hrtimer ckc_timer;
651 struct kvm_s390_pgm_info pgm;
652 struct gmap *gmap;
653 /* backup location for the currently enabled gmap when scheduled out */
654 struct gmap *enabled_gmap;
655 struct kvm_guestdbg_info_arch guestdbg;
656 unsigned long pfault_token;
657 unsigned long pfault_select;
658 unsigned long pfault_compare;
659 bool cputm_enabled;
660 /*
661 * The seqcount protects updates to cputm_start and sie_block.cputm,
662 * this way we can have non-blocking reads with consistent values.
663 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
664 * values and to start/stop/enable/disable cpu timer accounting.
665 */
666 seqcount_t cputm_seqcount;
667 __u64 cputm_start;
668 bool gs_enabled;
669 bool skey_enabled;
670 };
671
672 struct kvm_vm_stat {
673 u64 inject_io;
674 u64 inject_float_mchk;
675 u64 inject_pfault_done;
676 u64 inject_service_signal;
677 u64 inject_virtio;
678 u64 remote_tlb_flush;
679 };
680
681 struct kvm_arch_memory_slot {
682 };
683
684 struct s390_map_info {
685 struct list_head list;
686 __u64 guest_addr;
687 __u64 addr;
688 struct page *page;
689 };
690
691 struct s390_io_adapter {
692 unsigned int id;
693 int isc;
694 bool maskable;
695 bool masked;
696 bool swap;
697 bool suppressible;
698 struct rw_semaphore maps_lock;
699 struct list_head maps;
700 atomic_t nr_maps;
701 };
702
703 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
704 #define MAX_S390_ADAPTER_MAPS 256
705
706 /* maximum size of facilities and facility mask is 2k bytes */
707 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
708 #define S390_ARCH_FAC_LIST_SIZE_U64 \
709 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
710 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
711 #define S390_ARCH_FAC_MASK_SIZE_U64 \
712 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
713
714 struct kvm_s390_cpu_model {
715 /* facility mask supported by kvm & hosting machine */
716 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
717 struct kvm_s390_vm_cpu_subfunc subfuncs;
718 /* facility list requested by guest (in dma page) */
719 __u64 *fac_list;
720 u64 cpuid;
721 unsigned short ibc;
722 };
723
724 struct kvm_s390_module_hook {
725 int (*hook)(struct kvm_vcpu *vcpu);
726 struct module *owner;
727 };
728
729 struct kvm_s390_crypto {
730 struct kvm_s390_crypto_cb *crycb;
731 struct kvm_s390_module_hook *pqap_hook;
732 __u32 crycbd;
733 __u8 aes_kw;
734 __u8 dea_kw;
735 __u8 apie;
736 };
737
738 #define APCB0_MASK_SIZE 1
739 struct kvm_s390_apcb0 {
740 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */
741 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */
742 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */
743 __u64 reserved18; /* 0x0018 */
744 };
745
746 #define APCB1_MASK_SIZE 4
747 struct kvm_s390_apcb1 {
748 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */
749 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */
750 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */
751 __u64 reserved60[4]; /* 0x0060 */
752 };
753
754 struct kvm_s390_crypto_cb {
755 struct kvm_s390_apcb0 apcb0; /* 0x0000 */
756 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */
757 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */
758 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */
759 struct kvm_s390_apcb1 apcb1; /* 0x0080 */
760 };
761
762 struct kvm_s390_gisa {
763 union {
764 struct { /* common to all formats */
765 u32 next_alert;
766 u8 ipm;
767 u8 reserved01[2];
768 u8 iam;
769 };
770 struct { /* format 0 */
771 u32 next_alert;
772 u8 ipm;
773 u8 reserved01;
774 u8 : 6;
775 u8 g : 1;
776 u8 c : 1;
777 u8 iam;
778 u8 reserved02[4];
779 u32 airq_count;
780 } g0;
781 struct { /* format 1 */
782 u32 next_alert;
783 u8 ipm;
784 u8 simm;
785 u8 nimm;
786 u8 iam;
787 u8 aism[8];
788 u8 : 6;
789 u8 g : 1;
790 u8 c : 1;
791 u8 reserved03[11];
792 u32 airq_count;
793 } g1;
794 struct {
795 u64 word[4];
796 } u64;
797 };
798 };
799
800 struct kvm_s390_gib {
801 u32 alert_list_origin;
802 u32 reserved01;
803 u8:5;
804 u8 nisc:3;
805 u8 reserved03[3];
806 u32 reserved04[5];
807 };
808
809 /*
810 * sie_page2 has to be allocated as DMA because fac_list, crycb and
811 * gisa need 31bit addresses in the sie control block.
812 */
813 struct sie_page2 {
814 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */
815 struct kvm_s390_crypto_cb crycb; /* 0x0800 */
816 struct kvm_s390_gisa gisa; /* 0x0900 */
817 struct kvm *kvm; /* 0x0920 */
818 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */
819 };
820
821 struct kvm_s390_vsie {
822 struct mutex mutex;
823 struct radix_tree_root addr_to_page;
824 int page_count;
825 int next;
826 struct page *pages[KVM_MAX_VCPUS];
827 };
828
829 struct kvm_s390_gisa_iam {
830 u8 mask;
831 spinlock_t ref_lock;
832 u32 ref_count[MAX_ISC + 1];
833 };
834
835 struct kvm_s390_gisa_interrupt {
836 struct kvm_s390_gisa *origin;
837 struct kvm_s390_gisa_iam alert;
838 struct hrtimer timer;
839 u64 expires;
840 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
841 };
842
843 struct kvm_arch{
844 void *sca;
845 int use_esca;
846 rwlock_t sca_lock;
847 debug_info_t *dbf;
848 struct kvm_s390_float_interrupt float_int;
849 struct kvm_device *flic;
850 struct gmap *gmap;
851 unsigned long mem_limit;
852 int css_support;
853 int use_irqchip;
854 int use_cmma;
855 int use_pfmfi;
856 int use_skf;
857 int user_cpu_state_ctrl;
858 int user_sigp;
859 int user_stsi;
860 int user_instr0;
861 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
862 wait_queue_head_t ipte_wq;
863 int ipte_lock_count;
864 struct mutex ipte_mutex;
865 spinlock_t start_stop_lock;
866 struct sie_page2 *sie_page2;
867 struct kvm_s390_cpu_model model;
868 struct kvm_s390_crypto crypto;
869 struct kvm_s390_vsie vsie;
870 u8 epdx;
871 u64 epoch;
872 int migration_mode;
873 atomic64_t cmma_dirty_pages;
874 /* subset of available cpu features enabled by user space */
875 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
876 /* indexed by vcpu_idx */
877 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
878 struct kvm_s390_gisa_interrupt gisa_int;
879 };
880
881 #define KVM_HVA_ERR_BAD (-1UL)
882 #define KVM_HVA_ERR_RO_BAD (-2UL)
883
kvm_is_error_hva(unsigned long addr)884 static inline bool kvm_is_error_hva(unsigned long addr)
885 {
886 return IS_ERR_VALUE(addr);
887 }
888
889 #define ASYNC_PF_PER_VCPU 64
890 struct kvm_arch_async_pf {
891 unsigned long pfault_token;
892 };
893
894 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
895
896 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
897 struct kvm_async_pf *work);
898
899 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
900 struct kvm_async_pf *work);
901
902 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
903 struct kvm_async_pf *work);
904
905 void kvm_arch_crypto_clear_masks(struct kvm *kvm);
906 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
907 unsigned long *aqm, unsigned long *adm);
908
909 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
910 extern char sie_exit;
911
912 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
913 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
914
kvm_arch_hardware_disable(void)915 static inline void kvm_arch_hardware_disable(void) {}
kvm_arch_sync_events(struct kvm * kvm)916 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
kvm_arch_vcpu_uninit(struct kvm_vcpu * vcpu)917 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
kvm_arch_sched_in(struct kvm_vcpu * vcpu,int cpu)918 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
kvm_arch_free_memslot(struct kvm * kvm,struct kvm_memory_slot * free,struct kvm_memory_slot * dont)919 static inline void kvm_arch_free_memslot(struct kvm *kvm,
920 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
kvm_arch_memslots_updated(struct kvm * kvm,u64 gen)921 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
kvm_arch_flush_shadow_all(struct kvm * kvm)922 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
kvm_arch_flush_shadow_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)923 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
924 struct kvm_memory_slot *slot) {}
kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)925 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)926 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
927
928 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
929
930 #endif
931