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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
56union bsca_sigp_ctrl {
57 __u8 value;
58 struct {
59 __u8 c : 1;
60 __u8 r : 1;
61 __u8 scn : 6;
62 };
63};
64
65union esca_sigp_ctrl {
66 __u16 value;
67 struct {
68 __u8 c : 1;
69 __u8 reserved: 7;
70 __u8 scn;
71 };
72};
73
74struct esca_entry {
75 union esca_sigp_ctrl sigp_ctrl;
76 __u16 reserved1[3];
77 __u64 sda;
78 __u64 reserved2[6];
79};
80
81struct 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
89union 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
98union sca_utility {
99 __u16 val;
100 struct {
101 __u16 mtcr : 1;
102 __u16 reserved : 15;
103 };
104};
105
106struct 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
115struct 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 */
132struct 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
173struct 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
369struct kvm_s390_itdb {
370 __u8 data[256];
371};
372
373struct 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
383struct 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 */
535enum 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
621struct 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
636struct 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
647struct 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
677struct 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
691struct kvm_hw_wp_info_arch {
692 unsigned long addr;
693 unsigned long phys_addr;
694 int len;
695 char *old_data;
696};
697
698struct 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
723struct 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
735struct kvm_s390_pv_vcpu {
736 u64 handle;
737 unsigned long stor_base;
738};
739
740struct 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
772struct 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};
781
782struct kvm_arch_memory_slot {
783};
784
785struct s390_map_info {
786 struct list_head list;
787 __u64 guest_addr;
788 __u64 addr;
789 struct page *page;
790};
791
792struct s390_io_adapter {
793 unsigned int id;
794 int isc;
795 bool maskable;
796 bool masked;
797 bool swap;
798 bool suppressible;
799};
800
801#define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
802#define MAX_S390_ADAPTER_MAPS 256
803
804/* maximum size of facilities and facility mask is 2k bytes */
805#define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
806#define S390_ARCH_FAC_LIST_SIZE_U64 \
807 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
808#define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
809#define S390_ARCH_FAC_MASK_SIZE_U64 \
810 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
811
812struct kvm_s390_cpu_model {
813 /* facility mask supported by kvm & hosting machine */
814 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
815 struct kvm_s390_vm_cpu_subfunc subfuncs;
816 /* facility list requested by guest (in dma page) */
817 __u64 *fac_list;
818 u64 cpuid;
819 unsigned short ibc;
820};
821
822typedef int (*crypto_hook)(struct kvm_vcpu *vcpu);
823
824struct kvm_s390_crypto {
825 struct kvm_s390_crypto_cb *crycb;
826 struct rw_semaphore pqap_hook_rwsem;
827 crypto_hook *pqap_hook;
828 __u32 crycbd;
829 __u8 aes_kw;
830 __u8 dea_kw;
831 __u8 apie;
832};
833
834#define APCB0_MASK_SIZE 1
835struct kvm_s390_apcb0 {
836 __u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */
837 __u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */
838 __u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */
839 __u64 reserved18; /* 0x0018 */
840};
841
842#define APCB1_MASK_SIZE 4
843struct kvm_s390_apcb1 {
844 __u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */
845 __u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */
846 __u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */
847 __u64 reserved60[4]; /* 0x0060 */
848};
849
850struct kvm_s390_crypto_cb {
851 struct kvm_s390_apcb0 apcb0; /* 0x0000 */
852 __u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */
853 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */
854 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */
855 struct kvm_s390_apcb1 apcb1; /* 0x0080 */
856};
857
858struct kvm_s390_gisa {
859 union {
860 struct { /* common to all formats */
861 u32 next_alert;
862 u8 ipm;
863 u8 reserved01[2];
864 u8 iam;
865 };
866 struct { /* format 0 */
867 u32 next_alert;
868 u8 ipm;
869 u8 reserved01;
870 u8 : 6;
871 u8 g : 1;
872 u8 c : 1;
873 u8 iam;
874 u8 reserved02[4];
875 u32 airq_count;
876 } g0;
877 struct { /* format 1 */
878 u32 next_alert;
879 u8 ipm;
880 u8 simm;
881 u8 nimm;
882 u8 iam;
883 u8 aism[8];
884 u8 : 6;
885 u8 g : 1;
886 u8 c : 1;
887 u8 reserved03[11];
888 u32 airq_count;
889 } g1;
890 struct {
891 u64 word[4];
892 } u64;
893 };
894};
895
896struct kvm_s390_gib {
897 u32 alert_list_origin;
898 u32 reserved01;
899 u8:5;
900 u8 nisc:3;
901 u8 reserved03[3];
902 u32 reserved04[5];
903};
904
905/*
906 * sie_page2 has to be allocated as DMA because fac_list, crycb and
907 * gisa need 31bit addresses in the sie control block.
908 */
909struct sie_page2 {
910 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */
911 struct kvm_s390_crypto_cb crycb; /* 0x0800 */
912 struct kvm_s390_gisa gisa; /* 0x0900 */
913 struct kvm *kvm; /* 0x0920 */
914 u8 reserved928[0x1000 - 0x928]; /* 0x0928 */
915};
916
917struct kvm_s390_vsie {
918 struct mutex mutex;
919 struct radix_tree_root addr_to_page;
920 int page_count;
921 int next;
922 struct page *pages[KVM_MAX_VCPUS];
923};
924
925struct kvm_s390_gisa_iam {
926 u8 mask;
927 spinlock_t ref_lock;
928 u32 ref_count[MAX_ISC + 1];
929};
930
931struct kvm_s390_gisa_interrupt {
932 struct kvm_s390_gisa *origin;
933 struct kvm_s390_gisa_iam alert;
934 struct hrtimer timer;
935 u64 expires;
936 DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
937};
938
939struct kvm_s390_pv {
940 u64 handle;
941 u64 guest_len;
942 unsigned long stor_base;
943 void *stor_var;
944 bool dumping;
945 void *set_aside;
946 struct list_head need_cleanup;
947 struct mmu_notifier mmu_notifier;
948};
949
950struct kvm_arch{
951 void *sca;
952 int use_esca;
953 rwlock_t sca_lock;
954 debug_info_t *dbf;
955 struct kvm_s390_float_interrupt float_int;
956 struct kvm_device *flic;
957 struct gmap *gmap;
958 unsigned long mem_limit;
959 int css_support;
960 int use_irqchip;
961 int use_cmma;
962 int use_pfmfi;
963 int use_skf;
964 int use_zpci_interp;
965 int user_cpu_state_ctrl;
966 int user_sigp;
967 int user_stsi;
968 int user_instr0;
969 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
970 wait_queue_head_t ipte_wq;
971 int ipte_lock_count;
972 struct mutex ipte_mutex;
973 spinlock_t start_stop_lock;
974 struct sie_page2 *sie_page2;
975 struct kvm_s390_cpu_model model;
976 struct kvm_s390_crypto crypto;
977 struct kvm_s390_vsie vsie;
978 u8 epdx;
979 u64 epoch;
980 int migration_mode;
981 atomic64_t cmma_dirty_pages;
982 /* subset of available cpu features enabled by user space */
983 DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
984 /* indexed by vcpu_idx */
985 DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
986 struct kvm_s390_gisa_interrupt gisa_int;
987 struct kvm_s390_pv pv;
988 struct list_head kzdev_list;
989 spinlock_t kzdev_list_lock;
990};
991
992#define KVM_HVA_ERR_BAD (-1UL)
993#define KVM_HVA_ERR_RO_BAD (-2UL)
994
995static inline bool kvm_is_error_hva(unsigned long addr)
996{
997 return IS_ERR_VALUE(addr);
998}
999
1000#define ASYNC_PF_PER_VCPU 64
1001struct kvm_arch_async_pf {
1002 unsigned long pfault_token;
1003};
1004
1005bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
1006
1007void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1008 struct kvm_async_pf *work);
1009
1010bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1011 struct kvm_async_pf *work);
1012
1013void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1014 struct kvm_async_pf *work);
1015
1016static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
1017
1018void kvm_arch_crypto_clear_masks(struct kvm *kvm);
1019void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
1020 unsigned long *aqm, unsigned long *adm);
1021
1022int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa);
1023
1024static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa)
1025{
1026 return __sie64a(virt_to_phys(sie_block), sie_block, rsa);
1027}
1028
1029extern char sie_exit;
1030
1031extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
1032extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
1033
1034static inline void kvm_arch_hardware_disable(void) {}
1035static inline void kvm_arch_sync_events(struct kvm *kvm) {}
1036static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
1037static inline void kvm_arch_free_memslot(struct kvm *kvm,
1038 struct kvm_memory_slot *slot) {}
1039static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
1040static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
1041static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
1042 struct kvm_memory_slot *slot) {}
1043static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
1044static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
1045
1046#define __KVM_HAVE_ARCH_VM_FREE
1047void kvm_arch_free_vm(struct kvm *kvm);
1048
1049struct zpci_kvm_hook {
1050 int (*kvm_register)(void *opaque, struct kvm *kvm);
1051 void (*kvm_unregister)(void *opaque);
1052};
1053
1054extern struct zpci_kvm_hook zpci_kvm_hook;
1055
1056#endif
1/*
2 * definition for kernel virtual machines on s390
3 *
4 * Copyright IBM Corp. 2008, 2009
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License (version 2 only)
8 * as published by the Free Software Foundation.
9 *
10 * Author(s): Carsten Otte <cotte@de.ibm.com>
11 */
12
13
14#ifndef ASM_KVM_HOST_H
15#define ASM_KVM_HOST_H
16
17#include <linux/types.h>
18#include <linux/hrtimer.h>
19#include <linux/interrupt.h>
20#include <linux/kvm_types.h>
21#include <linux/kvm_host.h>
22#include <linux/kvm.h>
23#include <linux/seqlock.h>
24#include <asm/debug.h>
25#include <asm/cpu.h>
26#include <asm/fpu/api.h>
27#include <asm/isc.h>
28
29#define KVM_S390_BSCA_CPU_SLOTS 64
30#define KVM_S390_ESCA_CPU_SLOTS 248
31#define KVM_MAX_VCPUS KVM_S390_ESCA_CPU_SLOTS
32#define KVM_USER_MEM_SLOTS 32
33
34/*
35 * These seem to be used for allocating ->chip in the routing table,
36 * which we don't use. 4096 is an out-of-thin-air value. If we need
37 * 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 4096
41#define KVM_HALT_POLL_NS_DEFAULT 0
42
43/* s390-specific vcpu->requests bit members */
44#define KVM_REQ_ENABLE_IBS 8
45#define KVM_REQ_DISABLE_IBS 9
46
47#define SIGP_CTRL_C 0x80
48#define SIGP_CTRL_SCN_MASK 0x3f
49
50union bsca_sigp_ctrl {
51 __u8 value;
52 struct {
53 __u8 c : 1;
54 __u8 r : 1;
55 __u8 scn : 6;
56 };
57} __packed;
58
59union esca_sigp_ctrl {
60 __u16 value;
61 struct {
62 __u8 c : 1;
63 __u8 reserved: 7;
64 __u8 scn;
65 };
66} __packed;
67
68struct esca_entry {
69 union esca_sigp_ctrl sigp_ctrl;
70 __u16 reserved1[3];
71 __u64 sda;
72 __u64 reserved2[6];
73} __packed;
74
75struct bsca_entry {
76 __u8 reserved0;
77 union bsca_sigp_ctrl sigp_ctrl;
78 __u16 reserved[3];
79 __u64 sda;
80 __u64 reserved2[2];
81} __attribute__((packed));
82
83union ipte_control {
84 unsigned long val;
85 struct {
86 unsigned long k : 1;
87 unsigned long kh : 31;
88 unsigned long kg : 32;
89 };
90};
91
92struct bsca_block {
93 union ipte_control ipte_control;
94 __u64 reserved[5];
95 __u64 mcn;
96 __u64 reserved2;
97 struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
98} __attribute__((packed));
99
100struct esca_block {
101 union ipte_control ipte_control;
102 __u64 reserved1[7];
103 __u64 mcn[4];
104 __u64 reserved2[20];
105 struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
106} __packed;
107
108#define CPUSTAT_STOPPED 0x80000000
109#define CPUSTAT_WAIT 0x10000000
110#define CPUSTAT_ECALL_PEND 0x08000000
111#define CPUSTAT_STOP_INT 0x04000000
112#define CPUSTAT_IO_INT 0x02000000
113#define CPUSTAT_EXT_INT 0x01000000
114#define CPUSTAT_RUNNING 0x00800000
115#define CPUSTAT_RETAINED 0x00400000
116#define CPUSTAT_TIMING_SUB 0x00020000
117#define CPUSTAT_SIE_SUB 0x00010000
118#define CPUSTAT_RRF 0x00008000
119#define CPUSTAT_SLSV 0x00004000
120#define CPUSTAT_SLSR 0x00002000
121#define CPUSTAT_ZARCH 0x00000800
122#define CPUSTAT_MCDS 0x00000100
123#define CPUSTAT_SM 0x00000080
124#define CPUSTAT_IBS 0x00000040
125#define CPUSTAT_GED2 0x00000010
126#define CPUSTAT_G 0x00000008
127#define CPUSTAT_GED 0x00000004
128#define CPUSTAT_J 0x00000002
129#define CPUSTAT_P 0x00000001
130
131struct kvm_s390_sie_block {
132 atomic_t cpuflags; /* 0x0000 */
133 __u32 : 1; /* 0x0004 */
134 __u32 prefix : 18;
135 __u32 : 1;
136 __u32 ibc : 12;
137 __u8 reserved08[4]; /* 0x0008 */
138#define PROG_IN_SIE (1<<0)
139 __u32 prog0c; /* 0x000c */
140 __u8 reserved10[16]; /* 0x0010 */
141#define PROG_BLOCK_SIE (1<<0)
142#define PROG_REQUEST (1<<1)
143 atomic_t prog20; /* 0x0020 */
144 __u8 reserved24[4]; /* 0x0024 */
145 __u64 cputm; /* 0x0028 */
146 __u64 ckc; /* 0x0030 */
147 __u64 epoch; /* 0x0038 */
148 __u8 reserved40[4]; /* 0x0040 */
149#define LCTL_CR0 0x8000
150#define LCTL_CR6 0x0200
151#define LCTL_CR9 0x0040
152#define LCTL_CR10 0x0020
153#define LCTL_CR11 0x0010
154#define LCTL_CR14 0x0002
155 __u16 lctl; /* 0x0044 */
156 __s16 icpua; /* 0x0046 */
157#define ICTL_PINT 0x20000000
158#define ICTL_LPSW 0x00400000
159#define ICTL_STCTL 0x00040000
160#define ICTL_ISKE 0x00004000
161#define ICTL_SSKE 0x00002000
162#define ICTL_RRBE 0x00001000
163#define ICTL_TPROT 0x00000200
164 __u32 ictl; /* 0x0048 */
165 __u32 eca; /* 0x004c */
166#define ICPT_INST 0x04
167#define ICPT_PROGI 0x08
168#define ICPT_INSTPROGI 0x0C
169#define ICPT_OPEREXC 0x2C
170#define ICPT_PARTEXEC 0x38
171#define ICPT_IOINST 0x40
172 __u8 icptcode; /* 0x0050 */
173 __u8 icptstatus; /* 0x0051 */
174 __u16 ihcpu; /* 0x0052 */
175 __u8 reserved54[2]; /* 0x0054 */
176 __u16 ipa; /* 0x0056 */
177 __u32 ipb; /* 0x0058 */
178 __u32 scaoh; /* 0x005c */
179 __u8 reserved60; /* 0x0060 */
180 __u8 ecb; /* 0x0061 */
181 __u8 ecb2; /* 0x0062 */
182#define ECB3_AES 0x04
183#define ECB3_DEA 0x08
184 __u8 ecb3; /* 0x0063 */
185 __u32 scaol; /* 0x0064 */
186 __u8 reserved68[4]; /* 0x0068 */
187 __u32 todpr; /* 0x006c */
188 __u8 reserved70[32]; /* 0x0070 */
189 psw_t gpsw; /* 0x0090 */
190 __u64 gg14; /* 0x00a0 */
191 __u64 gg15; /* 0x00a8 */
192 __u8 reservedb0[20]; /* 0x00b0 */
193 __u16 extcpuaddr; /* 0x00c4 */
194 __u16 eic; /* 0x00c6 */
195 __u32 reservedc8; /* 0x00c8 */
196 __u16 pgmilc; /* 0x00cc */
197 __u16 iprcc; /* 0x00ce */
198 __u32 dxc; /* 0x00d0 */
199 __u16 mcn; /* 0x00d4 */
200 __u8 perc; /* 0x00d6 */
201 __u8 peratmid; /* 0x00d7 */
202 __u64 peraddr; /* 0x00d8 */
203 __u8 eai; /* 0x00e0 */
204 __u8 peraid; /* 0x00e1 */
205 __u8 oai; /* 0x00e2 */
206 __u8 armid; /* 0x00e3 */
207 __u8 reservede4[4]; /* 0x00e4 */
208 __u64 tecmc; /* 0x00e8 */
209 __u8 reservedf0[12]; /* 0x00f0 */
210#define CRYCB_FORMAT1 0x00000001
211#define CRYCB_FORMAT2 0x00000003
212 __u32 crycbd; /* 0x00fc */
213 __u64 gcr[16]; /* 0x0100 */
214 __u64 gbea; /* 0x0180 */
215 __u8 reserved188[24]; /* 0x0188 */
216 __u32 fac; /* 0x01a0 */
217 __u8 reserved1a4[20]; /* 0x01a4 */
218 __u64 cbrlo; /* 0x01b8 */
219 __u8 reserved1c0[8]; /* 0x01c0 */
220 __u32 ecd; /* 0x01c8 */
221 __u8 reserved1cc[18]; /* 0x01cc */
222 __u64 pp; /* 0x01de */
223 __u8 reserved1e6[2]; /* 0x01e6 */
224 __u64 itdba; /* 0x01e8 */
225 __u64 riccbd; /* 0x01f0 */
226 __u8 reserved1f8[8]; /* 0x01f8 */
227} __attribute__((packed));
228
229struct kvm_s390_itdb {
230 __u8 data[256];
231} __packed;
232
233struct sie_page {
234 struct kvm_s390_sie_block sie_block;
235 __u8 reserved200[1024]; /* 0x0200 */
236 struct kvm_s390_itdb itdb; /* 0x0600 */
237 __u8 reserved700[2304]; /* 0x0700 */
238} __packed;
239
240struct kvm_vcpu_stat {
241 u32 exit_userspace;
242 u32 exit_null;
243 u32 exit_external_request;
244 u32 exit_external_interrupt;
245 u32 exit_stop_request;
246 u32 exit_validity;
247 u32 exit_instruction;
248 u32 halt_successful_poll;
249 u32 halt_attempted_poll;
250 u32 halt_wakeup;
251 u32 instruction_lctl;
252 u32 instruction_lctlg;
253 u32 instruction_stctl;
254 u32 instruction_stctg;
255 u32 exit_program_interruption;
256 u32 exit_instr_and_program;
257 u32 deliver_external_call;
258 u32 deliver_emergency_signal;
259 u32 deliver_service_signal;
260 u32 deliver_virtio_interrupt;
261 u32 deliver_stop_signal;
262 u32 deliver_prefix_signal;
263 u32 deliver_restart_signal;
264 u32 deliver_program_int;
265 u32 deliver_io_int;
266 u32 exit_wait_state;
267 u32 instruction_pfmf;
268 u32 instruction_stidp;
269 u32 instruction_spx;
270 u32 instruction_stpx;
271 u32 instruction_stap;
272 u32 instruction_storage_key;
273 u32 instruction_ipte_interlock;
274 u32 instruction_stsch;
275 u32 instruction_chsc;
276 u32 instruction_stsi;
277 u32 instruction_stfl;
278 u32 instruction_tprot;
279 u32 instruction_essa;
280 u32 instruction_sigp_sense;
281 u32 instruction_sigp_sense_running;
282 u32 instruction_sigp_external_call;
283 u32 instruction_sigp_emergency;
284 u32 instruction_sigp_cond_emergency;
285 u32 instruction_sigp_start;
286 u32 instruction_sigp_stop;
287 u32 instruction_sigp_stop_store_status;
288 u32 instruction_sigp_store_status;
289 u32 instruction_sigp_store_adtl_status;
290 u32 instruction_sigp_arch;
291 u32 instruction_sigp_prefix;
292 u32 instruction_sigp_restart;
293 u32 instruction_sigp_init_cpu_reset;
294 u32 instruction_sigp_cpu_reset;
295 u32 instruction_sigp_unknown;
296 u32 diagnose_10;
297 u32 diagnose_44;
298 u32 diagnose_9c;
299 u32 diagnose_258;
300 u32 diagnose_308;
301 u32 diagnose_500;
302};
303
304#define PGM_OPERATION 0x01
305#define PGM_PRIVILEGED_OP 0x02
306#define PGM_EXECUTE 0x03
307#define PGM_PROTECTION 0x04
308#define PGM_ADDRESSING 0x05
309#define PGM_SPECIFICATION 0x06
310#define PGM_DATA 0x07
311#define PGM_FIXED_POINT_OVERFLOW 0x08
312#define PGM_FIXED_POINT_DIVIDE 0x09
313#define PGM_DECIMAL_OVERFLOW 0x0a
314#define PGM_DECIMAL_DIVIDE 0x0b
315#define PGM_HFP_EXPONENT_OVERFLOW 0x0c
316#define PGM_HFP_EXPONENT_UNDERFLOW 0x0d
317#define PGM_HFP_SIGNIFICANCE 0x0e
318#define PGM_HFP_DIVIDE 0x0f
319#define PGM_SEGMENT_TRANSLATION 0x10
320#define PGM_PAGE_TRANSLATION 0x11
321#define PGM_TRANSLATION_SPEC 0x12
322#define PGM_SPECIAL_OPERATION 0x13
323#define PGM_OPERAND 0x15
324#define PGM_TRACE_TABEL 0x16
325#define PGM_VECTOR_PROCESSING 0x1b
326#define PGM_SPACE_SWITCH 0x1c
327#define PGM_HFP_SQUARE_ROOT 0x1d
328#define PGM_PC_TRANSLATION_SPEC 0x1f
329#define PGM_AFX_TRANSLATION 0x20
330#define PGM_ASX_TRANSLATION 0x21
331#define PGM_LX_TRANSLATION 0x22
332#define PGM_EX_TRANSLATION 0x23
333#define PGM_PRIMARY_AUTHORITY 0x24
334#define PGM_SECONDARY_AUTHORITY 0x25
335#define PGM_LFX_TRANSLATION 0x26
336#define PGM_LSX_TRANSLATION 0x27
337#define PGM_ALET_SPECIFICATION 0x28
338#define PGM_ALEN_TRANSLATION 0x29
339#define PGM_ALE_SEQUENCE 0x2a
340#define PGM_ASTE_VALIDITY 0x2b
341#define PGM_ASTE_SEQUENCE 0x2c
342#define PGM_EXTENDED_AUTHORITY 0x2d
343#define PGM_LSTE_SEQUENCE 0x2e
344#define PGM_ASTE_INSTANCE 0x2f
345#define PGM_STACK_FULL 0x30
346#define PGM_STACK_EMPTY 0x31
347#define PGM_STACK_SPECIFICATION 0x32
348#define PGM_STACK_TYPE 0x33
349#define PGM_STACK_OPERATION 0x34
350#define PGM_ASCE_TYPE 0x38
351#define PGM_REGION_FIRST_TRANS 0x39
352#define PGM_REGION_SECOND_TRANS 0x3a
353#define PGM_REGION_THIRD_TRANS 0x3b
354#define PGM_MONITOR 0x40
355#define PGM_PER 0x80
356#define PGM_CRYPTO_OPERATION 0x119
357
358/* irq types in order of priority */
359enum irq_types {
360 IRQ_PEND_MCHK_EX = 0,
361 IRQ_PEND_SVC,
362 IRQ_PEND_PROG,
363 IRQ_PEND_MCHK_REP,
364 IRQ_PEND_EXT_IRQ_KEY,
365 IRQ_PEND_EXT_MALFUNC,
366 IRQ_PEND_EXT_EMERGENCY,
367 IRQ_PEND_EXT_EXTERNAL,
368 IRQ_PEND_EXT_CLOCK_COMP,
369 IRQ_PEND_EXT_CPU_TIMER,
370 IRQ_PEND_EXT_TIMING,
371 IRQ_PEND_EXT_SERVICE,
372 IRQ_PEND_EXT_HOST,
373 IRQ_PEND_PFAULT_INIT,
374 IRQ_PEND_PFAULT_DONE,
375 IRQ_PEND_VIRTIO,
376 IRQ_PEND_IO_ISC_0,
377 IRQ_PEND_IO_ISC_1,
378 IRQ_PEND_IO_ISC_2,
379 IRQ_PEND_IO_ISC_3,
380 IRQ_PEND_IO_ISC_4,
381 IRQ_PEND_IO_ISC_5,
382 IRQ_PEND_IO_ISC_6,
383 IRQ_PEND_IO_ISC_7,
384 IRQ_PEND_SIGP_STOP,
385 IRQ_PEND_RESTART,
386 IRQ_PEND_SET_PREFIX,
387 IRQ_PEND_COUNT
388};
389
390/* We have 2M for virtio device descriptor pages. Smallest amount of
391 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
392 */
393#define KVM_S390_MAX_VIRTIO_IRQS 87381
394
395/*
396 * Repressible (non-floating) machine check interrupts
397 * subclass bits in MCIC
398 */
399#define MCHK_EXTD_BIT 58
400#define MCHK_DEGR_BIT 56
401#define MCHK_WARN_BIT 55
402#define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
403 (1UL << MCHK_EXTD_BIT) | \
404 (1UL << MCHK_WARN_BIT))
405
406/* Exigent machine check interrupts subclass bits in MCIC */
407#define MCHK_SD_BIT 63
408#define MCHK_PD_BIT 62
409#define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
410
411#define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \
412 (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
413 (1UL << IRQ_PEND_EXT_CPU_TIMER) | \
414 (1UL << IRQ_PEND_EXT_MALFUNC) | \
415 (1UL << IRQ_PEND_EXT_EMERGENCY) | \
416 (1UL << IRQ_PEND_EXT_EXTERNAL) | \
417 (1UL << IRQ_PEND_EXT_TIMING) | \
418 (1UL << IRQ_PEND_EXT_HOST) | \
419 (1UL << IRQ_PEND_EXT_SERVICE) | \
420 (1UL << IRQ_PEND_VIRTIO) | \
421 (1UL << IRQ_PEND_PFAULT_INIT) | \
422 (1UL << IRQ_PEND_PFAULT_DONE))
423
424#define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
425 (1UL << IRQ_PEND_IO_ISC_1) | \
426 (1UL << IRQ_PEND_IO_ISC_2) | \
427 (1UL << IRQ_PEND_IO_ISC_3) | \
428 (1UL << IRQ_PEND_IO_ISC_4) | \
429 (1UL << IRQ_PEND_IO_ISC_5) | \
430 (1UL << IRQ_PEND_IO_ISC_6) | \
431 (1UL << IRQ_PEND_IO_ISC_7))
432
433#define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
434 (1UL << IRQ_PEND_MCHK_EX))
435
436struct kvm_s390_interrupt_info {
437 struct list_head list;
438 u64 type;
439 union {
440 struct kvm_s390_io_info io;
441 struct kvm_s390_ext_info ext;
442 struct kvm_s390_pgm_info pgm;
443 struct kvm_s390_emerg_info emerg;
444 struct kvm_s390_extcall_info extcall;
445 struct kvm_s390_prefix_info prefix;
446 struct kvm_s390_stop_info stop;
447 struct kvm_s390_mchk_info mchk;
448 };
449};
450
451struct kvm_s390_irq_payload {
452 struct kvm_s390_io_info io;
453 struct kvm_s390_ext_info ext;
454 struct kvm_s390_pgm_info pgm;
455 struct kvm_s390_emerg_info emerg;
456 struct kvm_s390_extcall_info extcall;
457 struct kvm_s390_prefix_info prefix;
458 struct kvm_s390_stop_info stop;
459 struct kvm_s390_mchk_info mchk;
460};
461
462struct kvm_s390_local_interrupt {
463 spinlock_t lock;
464 struct kvm_s390_float_interrupt *float_int;
465 struct swait_queue_head *wq;
466 atomic_t *cpuflags;
467 DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
468 struct kvm_s390_irq_payload irq;
469 unsigned long pending_irqs;
470};
471
472#define FIRQ_LIST_IO_ISC_0 0
473#define FIRQ_LIST_IO_ISC_1 1
474#define FIRQ_LIST_IO_ISC_2 2
475#define FIRQ_LIST_IO_ISC_3 3
476#define FIRQ_LIST_IO_ISC_4 4
477#define FIRQ_LIST_IO_ISC_5 5
478#define FIRQ_LIST_IO_ISC_6 6
479#define FIRQ_LIST_IO_ISC_7 7
480#define FIRQ_LIST_PFAULT 8
481#define FIRQ_LIST_VIRTIO 9
482#define FIRQ_LIST_COUNT 10
483#define FIRQ_CNTR_IO 0
484#define FIRQ_CNTR_SERVICE 1
485#define FIRQ_CNTR_VIRTIO 2
486#define FIRQ_CNTR_PFAULT 3
487#define FIRQ_MAX_COUNT 4
488
489struct kvm_s390_float_interrupt {
490 unsigned long pending_irqs;
491 spinlock_t lock;
492 struct list_head lists[FIRQ_LIST_COUNT];
493 int counters[FIRQ_MAX_COUNT];
494 struct kvm_s390_mchk_info mchk;
495 struct kvm_s390_ext_info srv_signal;
496 int next_rr_cpu;
497 unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
498};
499
500struct kvm_hw_wp_info_arch {
501 unsigned long addr;
502 unsigned long phys_addr;
503 int len;
504 char *old_data;
505};
506
507struct kvm_hw_bp_info_arch {
508 unsigned long addr;
509 int len;
510};
511
512/*
513 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
514 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
515 * arch/s390/include/uapi/asm/kvm.h
516 */
517#define KVM_GUESTDBG_EXIT_PENDING 0x10000000
518
519#define guestdbg_enabled(vcpu) \
520 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
521#define guestdbg_sstep_enabled(vcpu) \
522 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
523#define guestdbg_hw_bp_enabled(vcpu) \
524 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
525#define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
526 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
527
528struct kvm_guestdbg_info_arch {
529 unsigned long cr0;
530 unsigned long cr9;
531 unsigned long cr10;
532 unsigned long cr11;
533 struct kvm_hw_bp_info_arch *hw_bp_info;
534 struct kvm_hw_wp_info_arch *hw_wp_info;
535 int nr_hw_bp;
536 int nr_hw_wp;
537 unsigned long last_bp;
538};
539
540struct kvm_vcpu_arch {
541 struct kvm_s390_sie_block *sie_block;
542 unsigned int host_acrs[NUM_ACRS];
543 struct fpu host_fpregs;
544 struct kvm_s390_local_interrupt local_int;
545 struct hrtimer ckc_timer;
546 struct kvm_s390_pgm_info pgm;
547 union {
548 struct cpuid cpu_id;
549 u64 stidp_data;
550 };
551 struct gmap *gmap;
552 struct kvm_guestdbg_info_arch guestdbg;
553 unsigned long pfault_token;
554 unsigned long pfault_select;
555 unsigned long pfault_compare;
556 bool cputm_enabled;
557 /*
558 * The seqcount protects updates to cputm_start and sie_block.cputm,
559 * this way we can have non-blocking reads with consistent values.
560 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
561 * values and to start/stop/enable/disable cpu timer accounting.
562 */
563 seqcount_t cputm_seqcount;
564 __u64 cputm_start;
565};
566
567struct kvm_vm_stat {
568 u32 remote_tlb_flush;
569};
570
571struct kvm_arch_memory_slot {
572};
573
574struct s390_map_info {
575 struct list_head list;
576 __u64 guest_addr;
577 __u64 addr;
578 struct page *page;
579};
580
581struct s390_io_adapter {
582 unsigned int id;
583 int isc;
584 bool maskable;
585 bool masked;
586 bool swap;
587 struct rw_semaphore maps_lock;
588 struct list_head maps;
589 atomic_t nr_maps;
590};
591
592#define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
593#define MAX_S390_ADAPTER_MAPS 256
594
595/* maximum size of facilities and facility mask is 2k bytes */
596#define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
597#define S390_ARCH_FAC_LIST_SIZE_U64 \
598 (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
599#define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
600#define S390_ARCH_FAC_MASK_SIZE_U64 \
601 (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
602
603struct kvm_s390_cpu_model {
604 /* facility mask supported by kvm & hosting machine */
605 __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
606 /* facility list requested by guest (in dma page) */
607 __u64 *fac_list;
608 struct cpuid cpu_id;
609 unsigned short ibc;
610};
611
612struct kvm_s390_crypto {
613 struct kvm_s390_crypto_cb *crycb;
614 __u32 crycbd;
615 __u8 aes_kw;
616 __u8 dea_kw;
617};
618
619struct kvm_s390_crypto_cb {
620 __u8 reserved00[72]; /* 0x0000 */
621 __u8 dea_wrapping_key_mask[24]; /* 0x0048 */
622 __u8 aes_wrapping_key_mask[32]; /* 0x0060 */
623 __u8 reserved80[128]; /* 0x0080 */
624};
625
626/*
627 * sie_page2 has to be allocated as DMA because fac_list and crycb need
628 * 31bit addresses in the sie control block.
629 */
630struct sie_page2 {
631 __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */
632 struct kvm_s390_crypto_cb crycb; /* 0x0800 */
633 u8 reserved900[0x1000 - 0x900]; /* 0x0900 */
634} __packed;
635
636struct kvm_arch{
637 void *sca;
638 int use_esca;
639 rwlock_t sca_lock;
640 debug_info_t *dbf;
641 struct kvm_s390_float_interrupt float_int;
642 struct kvm_device *flic;
643 struct gmap *gmap;
644 unsigned long mem_limit;
645 int css_support;
646 int use_irqchip;
647 int use_cmma;
648 int user_cpu_state_ctrl;
649 int user_sigp;
650 int user_stsi;
651 struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
652 wait_queue_head_t ipte_wq;
653 int ipte_lock_count;
654 struct mutex ipte_mutex;
655 spinlock_t start_stop_lock;
656 struct sie_page2 *sie_page2;
657 struct kvm_s390_cpu_model model;
658 struct kvm_s390_crypto crypto;
659 u64 epoch;
660};
661
662#define KVM_HVA_ERR_BAD (-1UL)
663#define KVM_HVA_ERR_RO_BAD (-2UL)
664
665static inline bool kvm_is_error_hva(unsigned long addr)
666{
667 return IS_ERR_VALUE(addr);
668}
669
670#define ASYNC_PF_PER_VCPU 64
671struct kvm_arch_async_pf {
672 unsigned long pfault_token;
673};
674
675bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
676
677void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
678 struct kvm_async_pf *work);
679
680void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
681 struct kvm_async_pf *work);
682
683void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
684 struct kvm_async_pf *work);
685
686extern int sie64a(struct kvm_s390_sie_block *, u64 *);
687extern char sie_exit;
688
689static inline void kvm_arch_hardware_disable(void) {}
690static inline void kvm_arch_check_processor_compat(void *rtn) {}
691static inline void kvm_arch_sync_events(struct kvm *kvm) {}
692static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
693static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
694static inline void kvm_arch_free_memslot(struct kvm *kvm,
695 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
696static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
697static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
698static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
699 struct kvm_memory_slot *slot) {}
700static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
701static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
702
703#endif