Merge tag 'kvm-s390-next-5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git...
[sfrench/cifs-2.6.git] / arch / s390 / include / asm / kvm_host.h
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,
35  * which we don't use. 4096 is an out-of-thin-air value. If we need
36  * 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 4096
40 #define KVM_HALT_POLL_NS_DEFAULT 50000
41
42 /* s390-specific vcpu->requests bit members */
43 #define KVM_REQ_ENABLE_IBS      KVM_ARCH_REQ(0)
44 #define KVM_REQ_DISABLE_IBS     KVM_ARCH_REQ(1)
45 #define KVM_REQ_ICPT_OPEREXC    KVM_ARCH_REQ(2)
46 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
47 #define KVM_REQ_STOP_MIGRATION  KVM_ARCH_REQ(4)
48 #define KVM_REQ_VSIE_RESTART    KVM_ARCH_REQ(5)
49
50 #define SIGP_CTRL_C             0x80
51 #define SIGP_CTRL_SCN_MASK      0x3f
52
53 union bsca_sigp_ctrl {
54         __u8 value;
55         struct {
56                 __u8 c : 1;
57                 __u8 r : 1;
58                 __u8 scn : 6;
59         };
60 };
61
62 union esca_sigp_ctrl {
63         __u16 value;
64         struct {
65                 __u8 c : 1;
66                 __u8 reserved: 7;
67                 __u8 scn;
68         };
69 };
70
71 struct esca_entry {
72         union esca_sigp_ctrl sigp_ctrl;
73         __u16   reserved1[3];
74         __u64   sda;
75         __u64   reserved2[6];
76 };
77
78 struct bsca_entry {
79         __u8    reserved0;
80         union bsca_sigp_ctrl    sigp_ctrl;
81         __u16   reserved[3];
82         __u64   sda;
83         __u64   reserved2[2];
84 };
85
86 union ipte_control {
87         unsigned long val;
88         struct {
89                 unsigned long k  : 1;
90                 unsigned long kh : 31;
91                 unsigned long kg : 32;
92         };
93 };
94
95 struct bsca_block {
96         union ipte_control ipte_control;
97         __u64   reserved[5];
98         __u64   mcn;
99         __u64   reserved2;
100         struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
101 };
102
103 struct esca_block {
104         union ipte_control ipte_control;
105         __u64   reserved1[7];
106         __u64   mcn[4];
107         __u64   reserved2[20];
108         struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
109 };
110
111 /*
112  * This struct is used to store some machine check info from lowcore
113  * for machine checks that happen while the guest is running.
114  * This info in host's lowcore might be overwritten by a second machine
115  * check from host when host is in the machine check's high-level handling.
116  * The size is 24 bytes.
117  */
118 struct mcck_volatile_info {
119         __u64 mcic;
120         __u64 failing_storage_address;
121         __u32 ext_damage_code;
122         __u32 reserved;
123 };
124
125 #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
126                           CR0_MEASUREMENT_ALERT_SUBMASK)
127 #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
128                            CR14_EXTERNAL_DAMAGE_SUBMASK)
129
130 #define CPUSTAT_STOPPED    0x80000000
131 #define CPUSTAT_WAIT       0x10000000
132 #define CPUSTAT_ECALL_PEND 0x08000000
133 #define CPUSTAT_STOP_INT   0x04000000
134 #define CPUSTAT_IO_INT     0x02000000
135 #define CPUSTAT_EXT_INT    0x01000000
136 #define CPUSTAT_RUNNING    0x00800000
137 #define CPUSTAT_RETAINED   0x00400000
138 #define CPUSTAT_TIMING_SUB 0x00020000
139 #define CPUSTAT_SIE_SUB    0x00010000
140 #define CPUSTAT_RRF        0x00008000
141 #define CPUSTAT_SLSV       0x00004000
142 #define CPUSTAT_SLSR       0x00002000
143 #define CPUSTAT_ZARCH      0x00000800
144 #define CPUSTAT_MCDS       0x00000100
145 #define CPUSTAT_KSS        0x00000200
146 #define CPUSTAT_SM         0x00000080
147 #define CPUSTAT_IBS        0x00000040
148 #define CPUSTAT_GED2       0x00000010
149 #define CPUSTAT_G          0x00000008
150 #define CPUSTAT_GED        0x00000004
151 #define CPUSTAT_J          0x00000002
152 #define CPUSTAT_P          0x00000001
153
154 struct kvm_s390_sie_block {
155         atomic_t cpuflags;              /* 0x0000 */
156         __u32 : 1;                      /* 0x0004 */
157         __u32 prefix : 18;
158         __u32 : 1;
159         __u32 ibc : 12;
160         __u8    reserved08[4];          /* 0x0008 */
161 #define PROG_IN_SIE (1<<0)
162         __u32   prog0c;                 /* 0x000c */
163         __u8    reserved10[16];         /* 0x0010 */
164 #define PROG_BLOCK_SIE  (1<<0)
165 #define PROG_REQUEST    (1<<1)
166         atomic_t prog20;                /* 0x0020 */
167         __u8    reserved24[4];          /* 0x0024 */
168         __u64   cputm;                  /* 0x0028 */
169         __u64   ckc;                    /* 0x0030 */
170         __u64   epoch;                  /* 0x0038 */
171         __u32   svcc;                   /* 0x0040 */
172 #define LCTL_CR0        0x8000
173 #define LCTL_CR6        0x0200
174 #define LCTL_CR9        0x0040
175 #define LCTL_CR10       0x0020
176 #define LCTL_CR11       0x0010
177 #define LCTL_CR14       0x0002
178         __u16   lctl;                   /* 0x0044 */
179         __s16   icpua;                  /* 0x0046 */
180 #define ICTL_OPEREXC    0x80000000
181 #define ICTL_PINT       0x20000000
182 #define ICTL_LPSW       0x00400000
183 #define ICTL_STCTL      0x00040000
184 #define ICTL_ISKE       0x00004000
185 #define ICTL_SSKE       0x00002000
186 #define ICTL_RRBE       0x00001000
187 #define ICTL_TPROT      0x00000200
188         __u32   ictl;                   /* 0x0048 */
189 #define ECA_CEI         0x80000000
190 #define ECA_IB          0x40000000
191 #define ECA_SIGPI       0x10000000
192 #define ECA_MVPGI       0x01000000
193 #define ECA_AIV         0x00200000
194 #define ECA_VX          0x00020000
195 #define ECA_PROTEXCI    0x00002000
196 #define ECA_APIE        0x00000008
197 #define ECA_SII         0x00000001
198         __u32   eca;                    /* 0x004c */
199 #define ICPT_INST       0x04
200 #define ICPT_PROGI      0x08
201 #define ICPT_INSTPROGI  0x0C
202 #define ICPT_EXTREQ     0x10
203 #define ICPT_EXTINT     0x14
204 #define ICPT_IOREQ      0x18
205 #define ICPT_WAIT       0x1c
206 #define ICPT_VALIDITY   0x20
207 #define ICPT_STOP       0x28
208 #define ICPT_OPEREXC    0x2C
209 #define ICPT_PARTEXEC   0x38
210 #define ICPT_IOINST     0x40
211 #define ICPT_KSS        0x5c
212         __u8    icptcode;               /* 0x0050 */
213         __u8    icptstatus;             /* 0x0051 */
214         __u16   ihcpu;                  /* 0x0052 */
215         __u8    reserved54[2];          /* 0x0054 */
216         __u16   ipa;                    /* 0x0056 */
217         __u32   ipb;                    /* 0x0058 */
218         __u32   scaoh;                  /* 0x005c */
219 #define FPF_BPBC        0x20
220         __u8    fpf;                    /* 0x0060 */
221 #define ECB_GS          0x40
222 #define ECB_TE          0x10
223 #define ECB_SRSI        0x04
224 #define ECB_HOSTPROTINT 0x02
225         __u8    ecb;                    /* 0x0061 */
226 #define ECB2_CMMA       0x80
227 #define ECB2_IEP        0x20
228 #define ECB2_PFMFI      0x08
229 #define ECB2_ESCA       0x04
230         __u8    ecb2;                   /* 0x0062 */
231 #define ECB3_DEA 0x08
232 #define ECB3_AES 0x04
233 #define ECB3_RI  0x01
234         __u8    ecb3;                   /* 0x0063 */
235         __u32   scaol;                  /* 0x0064 */
236         __u8    reserved68;             /* 0x0068 */
237         __u8    epdx;                   /* 0x0069 */
238         __u8    reserved6a[2];          /* 0x006a */
239         __u32   todpr;                  /* 0x006c */
240 #define GISA_FORMAT1 0x00000001
241         __u32   gd;                     /* 0x0070 */
242         __u8    reserved74[12];         /* 0x0074 */
243         __u64   mso;                    /* 0x0080 */
244         __u64   msl;                    /* 0x0088 */
245         psw_t   gpsw;                   /* 0x0090 */
246         __u64   gg14;                   /* 0x00a0 */
247         __u64   gg15;                   /* 0x00a8 */
248         __u8    reservedb0[8];          /* 0x00b0 */
249 #define HPID_KVM        0x4
250 #define HPID_VSIE       0x5
251         __u8    hpid;                   /* 0x00b8 */
252         __u8    reservedb9[11];         /* 0x00b9 */
253         __u16   extcpuaddr;             /* 0x00c4 */
254         __u16   eic;                    /* 0x00c6 */
255         __u32   reservedc8;             /* 0x00c8 */
256         __u16   pgmilc;                 /* 0x00cc */
257         __u16   iprcc;                  /* 0x00ce */
258         __u32   dxc;                    /* 0x00d0 */
259         __u16   mcn;                    /* 0x00d4 */
260         __u8    perc;                   /* 0x00d6 */
261         __u8    peratmid;               /* 0x00d7 */
262         __u64   peraddr;                /* 0x00d8 */
263         __u8    eai;                    /* 0x00e0 */
264         __u8    peraid;                 /* 0x00e1 */
265         __u8    oai;                    /* 0x00e2 */
266         __u8    armid;                  /* 0x00e3 */
267         __u8    reservede4[4];          /* 0x00e4 */
268         __u64   tecmc;                  /* 0x00e8 */
269         __u8    reservedf0[12];         /* 0x00f0 */
270 #define CRYCB_FORMAT_MASK 0x00000003
271 #define CRYCB_FORMAT0 0x00000000
272 #define CRYCB_FORMAT1 0x00000001
273 #define CRYCB_FORMAT2 0x00000003
274         __u32   crycbd;                 /* 0x00fc */
275         __u64   gcr[16];                /* 0x0100 */
276         __u64   gbea;                   /* 0x0180 */
277         __u8    reserved188[8];         /* 0x0188 */
278         __u64   sdnxo;                  /* 0x0190 */
279         __u8    reserved198[8];         /* 0x0198 */
280         __u32   fac;                    /* 0x01a0 */
281         __u8    reserved1a4[20];        /* 0x01a4 */
282         __u64   cbrlo;                  /* 0x01b8 */
283         __u8    reserved1c0[8];         /* 0x01c0 */
284 #define ECD_HOSTREGMGMT 0x20000000
285 #define ECD_MEF         0x08000000
286 #define ECD_ETOKENF     0x02000000
287 #define ECD_ECC         0x00200000
288         __u32   ecd;                    /* 0x01c8 */
289         __u8    reserved1cc[18];        /* 0x01cc */
290         __u64   pp;                     /* 0x01de */
291         __u8    reserved1e6[2];         /* 0x01e6 */
292         __u64   itdba;                  /* 0x01e8 */
293         __u64   riccbd;                 /* 0x01f0 */
294         __u64   gvrd;                   /* 0x01f8 */
295 } __attribute__((packed));
296
297 struct kvm_s390_itdb {
298         __u8    data[256];
299 };
300
301 struct sie_page {
302         struct kvm_s390_sie_block sie_block;
303         struct mcck_volatile_info mcck_info;    /* 0x0200 */
304         __u8 reserved218[1000];         /* 0x0218 */
305         struct kvm_s390_itdb itdb;      /* 0x0600 */
306         __u8 reserved700[2304];         /* 0x0700 */
307 };
308
309 struct kvm_vcpu_stat {
310         u64 exit_userspace;
311         u64 exit_null;
312         u64 exit_external_request;
313         u64 exit_io_request;
314         u64 exit_external_interrupt;
315         u64 exit_stop_request;
316         u64 exit_validity;
317         u64 exit_instruction;
318         u64 exit_pei;
319         u64 halt_successful_poll;
320         u64 halt_attempted_poll;
321         u64 halt_poll_invalid;
322         u64 halt_no_poll_steal;
323         u64 halt_wakeup;
324         u64 instruction_lctl;
325         u64 instruction_lctlg;
326         u64 instruction_stctl;
327         u64 instruction_stctg;
328         u64 exit_program_interruption;
329         u64 exit_instr_and_program;
330         u64 exit_operation_exception;
331         u64 deliver_ckc;
332         u64 deliver_cputm;
333         u64 deliver_external_call;
334         u64 deliver_emergency_signal;
335         u64 deliver_service_signal;
336         u64 deliver_virtio;
337         u64 deliver_stop_signal;
338         u64 deliver_prefix_signal;
339         u64 deliver_restart_signal;
340         u64 deliver_program;
341         u64 deliver_io;
342         u64 deliver_machine_check;
343         u64 exit_wait_state;
344         u64 inject_ckc;
345         u64 inject_cputm;
346         u64 inject_external_call;
347         u64 inject_emergency_signal;
348         u64 inject_mchk;
349         u64 inject_pfault_init;
350         u64 inject_program;
351         u64 inject_restart;
352         u64 inject_set_prefix;
353         u64 inject_stop_signal;
354         u64 instruction_epsw;
355         u64 instruction_gs;
356         u64 instruction_io_other;
357         u64 instruction_lpsw;
358         u64 instruction_lpswe;
359         u64 instruction_pfmf;
360         u64 instruction_ptff;
361         u64 instruction_sck;
362         u64 instruction_sckpf;
363         u64 instruction_stidp;
364         u64 instruction_spx;
365         u64 instruction_stpx;
366         u64 instruction_stap;
367         u64 instruction_iske;
368         u64 instruction_ri;
369         u64 instruction_rrbe;
370         u64 instruction_sske;
371         u64 instruction_ipte_interlock;
372         u64 instruction_stsi;
373         u64 instruction_stfl;
374         u64 instruction_tb;
375         u64 instruction_tpi;
376         u64 instruction_tprot;
377         u64 instruction_tsch;
378         u64 instruction_sie;
379         u64 instruction_essa;
380         u64 instruction_sthyi;
381         u64 instruction_sigp_sense;
382         u64 instruction_sigp_sense_running;
383         u64 instruction_sigp_external_call;
384         u64 instruction_sigp_emergency;
385         u64 instruction_sigp_cond_emergency;
386         u64 instruction_sigp_start;
387         u64 instruction_sigp_stop;
388         u64 instruction_sigp_stop_store_status;
389         u64 instruction_sigp_store_status;
390         u64 instruction_sigp_store_adtl_status;
391         u64 instruction_sigp_arch;
392         u64 instruction_sigp_prefix;
393         u64 instruction_sigp_restart;
394         u64 instruction_sigp_init_cpu_reset;
395         u64 instruction_sigp_cpu_reset;
396         u64 instruction_sigp_unknown;
397         u64 diagnose_10;
398         u64 diagnose_44;
399         u64 diagnose_9c;
400         u64 diagnose_9c_ignored;
401         u64 diagnose_258;
402         u64 diagnose_308;
403         u64 diagnose_500;
404         u64 diagnose_other;
405 };
406
407 #define PGM_OPERATION                   0x01
408 #define PGM_PRIVILEGED_OP               0x02
409 #define PGM_EXECUTE                     0x03
410 #define PGM_PROTECTION                  0x04
411 #define PGM_ADDRESSING                  0x05
412 #define PGM_SPECIFICATION               0x06
413 #define PGM_DATA                        0x07
414 #define PGM_FIXED_POINT_OVERFLOW        0x08
415 #define PGM_FIXED_POINT_DIVIDE          0x09
416 #define PGM_DECIMAL_OVERFLOW            0x0a
417 #define PGM_DECIMAL_DIVIDE              0x0b
418 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
419 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
420 #define PGM_HFP_SIGNIFICANCE            0x0e
421 #define PGM_HFP_DIVIDE                  0x0f
422 #define PGM_SEGMENT_TRANSLATION         0x10
423 #define PGM_PAGE_TRANSLATION            0x11
424 #define PGM_TRANSLATION_SPEC            0x12
425 #define PGM_SPECIAL_OPERATION           0x13
426 #define PGM_OPERAND                     0x15
427 #define PGM_TRACE_TABEL                 0x16
428 #define PGM_VECTOR_PROCESSING           0x1b
429 #define PGM_SPACE_SWITCH                0x1c
430 #define PGM_HFP_SQUARE_ROOT             0x1d
431 #define PGM_PC_TRANSLATION_SPEC         0x1f
432 #define PGM_AFX_TRANSLATION             0x20
433 #define PGM_ASX_TRANSLATION             0x21
434 #define PGM_LX_TRANSLATION              0x22
435 #define PGM_EX_TRANSLATION              0x23
436 #define PGM_PRIMARY_AUTHORITY           0x24
437 #define PGM_SECONDARY_AUTHORITY         0x25
438 #define PGM_LFX_TRANSLATION             0x26
439 #define PGM_LSX_TRANSLATION             0x27
440 #define PGM_ALET_SPECIFICATION          0x28
441 #define PGM_ALEN_TRANSLATION            0x29
442 #define PGM_ALE_SEQUENCE                0x2a
443 #define PGM_ASTE_VALIDITY               0x2b
444 #define PGM_ASTE_SEQUENCE               0x2c
445 #define PGM_EXTENDED_AUTHORITY          0x2d
446 #define PGM_LSTE_SEQUENCE               0x2e
447 #define PGM_ASTE_INSTANCE               0x2f
448 #define PGM_STACK_FULL                  0x30
449 #define PGM_STACK_EMPTY                 0x31
450 #define PGM_STACK_SPECIFICATION         0x32
451 #define PGM_STACK_TYPE                  0x33
452 #define PGM_STACK_OPERATION             0x34
453 #define PGM_ASCE_TYPE                   0x38
454 #define PGM_REGION_FIRST_TRANS          0x39
455 #define PGM_REGION_SECOND_TRANS         0x3a
456 #define PGM_REGION_THIRD_TRANS          0x3b
457 #define PGM_MONITOR                     0x40
458 #define PGM_PER                         0x80
459 #define PGM_CRYPTO_OPERATION            0x119
460
461 /* irq types in ascend order of priorities */
462 enum irq_types {
463         IRQ_PEND_SET_PREFIX = 0,
464         IRQ_PEND_RESTART,
465         IRQ_PEND_SIGP_STOP,
466         IRQ_PEND_IO_ISC_7,
467         IRQ_PEND_IO_ISC_6,
468         IRQ_PEND_IO_ISC_5,
469         IRQ_PEND_IO_ISC_4,
470         IRQ_PEND_IO_ISC_3,
471         IRQ_PEND_IO_ISC_2,
472         IRQ_PEND_IO_ISC_1,
473         IRQ_PEND_IO_ISC_0,
474         IRQ_PEND_VIRTIO,
475         IRQ_PEND_PFAULT_DONE,
476         IRQ_PEND_PFAULT_INIT,
477         IRQ_PEND_EXT_HOST,
478         IRQ_PEND_EXT_SERVICE,
479         IRQ_PEND_EXT_TIMING,
480         IRQ_PEND_EXT_CPU_TIMER,
481         IRQ_PEND_EXT_CLOCK_COMP,
482         IRQ_PEND_EXT_EXTERNAL,
483         IRQ_PEND_EXT_EMERGENCY,
484         IRQ_PEND_EXT_MALFUNC,
485         IRQ_PEND_EXT_IRQ_KEY,
486         IRQ_PEND_MCHK_REP,
487         IRQ_PEND_PROG,
488         IRQ_PEND_SVC,
489         IRQ_PEND_MCHK_EX,
490         IRQ_PEND_COUNT
491 };
492
493 /* We have 2M for virtio device descriptor pages. Smallest amount of
494  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
495  */
496 #define KVM_S390_MAX_VIRTIO_IRQS 87381
497
498 /*
499  * Repressible (non-floating) machine check interrupts
500  * subclass bits in MCIC
501  */
502 #define MCHK_EXTD_BIT 58
503 #define MCHK_DEGR_BIT 56
504 #define MCHK_WARN_BIT 55
505 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
506                        (1UL << MCHK_EXTD_BIT) | \
507                        (1UL << MCHK_WARN_BIT))
508
509 /* Exigent machine check interrupts subclass bits in MCIC */
510 #define MCHK_SD_BIT 63
511 #define MCHK_PD_BIT 62
512 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
513
514 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
515                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
516                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
517                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
518                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
519                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
520                            (1UL << IRQ_PEND_EXT_TIMING)     | \
521                            (1UL << IRQ_PEND_EXT_HOST)       | \
522                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
523                            (1UL << IRQ_PEND_VIRTIO)         | \
524                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
525                            (1UL << IRQ_PEND_PFAULT_DONE))
526
527 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
528                           (1UL << IRQ_PEND_IO_ISC_1) | \
529                           (1UL << IRQ_PEND_IO_ISC_2) | \
530                           (1UL << IRQ_PEND_IO_ISC_3) | \
531                           (1UL << IRQ_PEND_IO_ISC_4) | \
532                           (1UL << IRQ_PEND_IO_ISC_5) | \
533                           (1UL << IRQ_PEND_IO_ISC_6) | \
534                           (1UL << IRQ_PEND_IO_ISC_7))
535
536 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
537                             (1UL << IRQ_PEND_MCHK_EX))
538
539 struct kvm_s390_interrupt_info {
540         struct list_head list;
541         u64     type;
542         union {
543                 struct kvm_s390_io_info io;
544                 struct kvm_s390_ext_info ext;
545                 struct kvm_s390_pgm_info pgm;
546                 struct kvm_s390_emerg_info emerg;
547                 struct kvm_s390_extcall_info extcall;
548                 struct kvm_s390_prefix_info prefix;
549                 struct kvm_s390_stop_info stop;
550                 struct kvm_s390_mchk_info mchk;
551         };
552 };
553
554 struct kvm_s390_irq_payload {
555         struct kvm_s390_io_info io;
556         struct kvm_s390_ext_info ext;
557         struct kvm_s390_pgm_info pgm;
558         struct kvm_s390_emerg_info emerg;
559         struct kvm_s390_extcall_info extcall;
560         struct kvm_s390_prefix_info prefix;
561         struct kvm_s390_stop_info stop;
562         struct kvm_s390_mchk_info mchk;
563 };
564
565 struct kvm_s390_local_interrupt {
566         spinlock_t lock;
567         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
568         struct kvm_s390_irq_payload irq;
569         unsigned long pending_irqs;
570 };
571
572 #define FIRQ_LIST_IO_ISC_0 0
573 #define FIRQ_LIST_IO_ISC_1 1
574 #define FIRQ_LIST_IO_ISC_2 2
575 #define FIRQ_LIST_IO_ISC_3 3
576 #define FIRQ_LIST_IO_ISC_4 4
577 #define FIRQ_LIST_IO_ISC_5 5
578 #define FIRQ_LIST_IO_ISC_6 6
579 #define FIRQ_LIST_IO_ISC_7 7
580 #define FIRQ_LIST_PFAULT   8
581 #define FIRQ_LIST_VIRTIO   9
582 #define FIRQ_LIST_COUNT   10
583 #define FIRQ_CNTR_IO       0
584 #define FIRQ_CNTR_SERVICE  1
585 #define FIRQ_CNTR_VIRTIO   2
586 #define FIRQ_CNTR_PFAULT   3
587 #define FIRQ_MAX_COUNT     4
588
589 /* mask the AIS mode for a given ISC */
590 #define AIS_MODE_MASK(isc) (0x80 >> isc)
591
592 #define KVM_S390_AIS_MODE_ALL    0
593 #define KVM_S390_AIS_MODE_SINGLE 1
594
595 struct kvm_s390_float_interrupt {
596         unsigned long pending_irqs;
597         spinlock_t lock;
598         struct list_head lists[FIRQ_LIST_COUNT];
599         int counters[FIRQ_MAX_COUNT];
600         struct kvm_s390_mchk_info mchk;
601         struct kvm_s390_ext_info srv_signal;
602         int next_rr_cpu;
603         struct mutex ais_lock;
604         u8 simm;
605         u8 nimm;
606 };
607
608 struct kvm_hw_wp_info_arch {
609         unsigned long addr;
610         unsigned long phys_addr;
611         int len;
612         char *old_data;
613 };
614
615 struct kvm_hw_bp_info_arch {
616         unsigned long addr;
617         int len;
618 };
619
620 /*
621  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
622  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
623  * arch/s390/include/uapi/asm/kvm.h
624  */
625 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
626
627 #define guestdbg_enabled(vcpu) \
628                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
629 #define guestdbg_sstep_enabled(vcpu) \
630                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
631 #define guestdbg_hw_bp_enabled(vcpu) \
632                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
633 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
634                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
635
636 struct kvm_guestdbg_info_arch {
637         unsigned long cr0;
638         unsigned long cr9;
639         unsigned long cr10;
640         unsigned long cr11;
641         struct kvm_hw_bp_info_arch *hw_bp_info;
642         struct kvm_hw_wp_info_arch *hw_wp_info;
643         int nr_hw_bp;
644         int nr_hw_wp;
645         unsigned long last_bp;
646 };
647
648 struct kvm_vcpu_arch {
649         struct kvm_s390_sie_block *sie_block;
650         /* if vsie is active, currently executed shadow sie control block */
651         struct kvm_s390_sie_block *vsie_block;
652         unsigned int      host_acrs[NUM_ACRS];
653         struct gs_cb      *host_gscb;
654         struct fpu        host_fpregs;
655         struct kvm_s390_local_interrupt local_int;
656         struct hrtimer    ckc_timer;
657         struct kvm_s390_pgm_info pgm;
658         struct gmap *gmap;
659         /* backup location for the currently enabled gmap when scheduled out */
660         struct gmap *enabled_gmap;
661         struct kvm_guestdbg_info_arch guestdbg;
662         unsigned long pfault_token;
663         unsigned long pfault_select;
664         unsigned long pfault_compare;
665         bool cputm_enabled;
666         /*
667          * The seqcount protects updates to cputm_start and sie_block.cputm,
668          * this way we can have non-blocking reads with consistent values.
669          * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
670          * values and to start/stop/enable/disable cpu timer accounting.
671          */
672         seqcount_t cputm_seqcount;
673         __u64 cputm_start;
674         bool gs_enabled;
675         bool skey_enabled;
676 };
677
678 struct kvm_vm_stat {
679         u64 inject_io;
680         u64 inject_float_mchk;
681         u64 inject_pfault_done;
682         u64 inject_service_signal;
683         u64 inject_virtio;
684         u64 remote_tlb_flush;
685 };
686
687 struct kvm_arch_memory_slot {
688 };
689
690 struct s390_map_info {
691         struct list_head list;
692         __u64 guest_addr;
693         __u64 addr;
694         struct page *page;
695 };
696
697 struct s390_io_adapter {
698         unsigned int id;
699         int isc;
700         bool maskable;
701         bool masked;
702         bool swap;
703         bool suppressible;
704         struct rw_semaphore maps_lock;
705         struct list_head maps;
706         atomic_t nr_maps;
707 };
708
709 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
710 #define MAX_S390_ADAPTER_MAPS 256
711
712 /* maximum size of facilities and facility mask is 2k bytes */
713 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
714 #define S390_ARCH_FAC_LIST_SIZE_U64 \
715         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
716 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
717 #define S390_ARCH_FAC_MASK_SIZE_U64 \
718         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
719
720 struct kvm_s390_cpu_model {
721         /* facility mask supported by kvm & hosting machine */
722         __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
723         struct kvm_s390_vm_cpu_subfunc subfuncs;
724         /* facility list requested by guest (in dma page) */
725         __u64 *fac_list;
726         u64 cpuid;
727         unsigned short ibc;
728 };
729
730 struct kvm_s390_module_hook {
731         int (*hook)(struct kvm_vcpu *vcpu);
732         struct module *owner;
733 };
734
735 struct kvm_s390_crypto {
736         struct kvm_s390_crypto_cb *crycb;
737         struct kvm_s390_module_hook *pqap_hook;
738         __u32 crycbd;
739         __u8 aes_kw;
740         __u8 dea_kw;
741         __u8 apie;
742 };
743
744 #define APCB0_MASK_SIZE 1
745 struct kvm_s390_apcb0 {
746         __u64 apm[APCB0_MASK_SIZE];             /* 0x0000 */
747         __u64 aqm[APCB0_MASK_SIZE];             /* 0x0008 */
748         __u64 adm[APCB0_MASK_SIZE];             /* 0x0010 */
749         __u64 reserved18;                       /* 0x0018 */
750 };
751
752 #define APCB1_MASK_SIZE 4
753 struct kvm_s390_apcb1 {
754         __u64 apm[APCB1_MASK_SIZE];             /* 0x0000 */
755         __u64 aqm[APCB1_MASK_SIZE];             /* 0x0020 */
756         __u64 adm[APCB1_MASK_SIZE];             /* 0x0040 */
757         __u64 reserved60[4];                    /* 0x0060 */
758 };
759
760 struct kvm_s390_crypto_cb {
761         struct kvm_s390_apcb0 apcb0;            /* 0x0000 */
762         __u8   reserved20[0x0048 - 0x0020];     /* 0x0020 */
763         __u8   dea_wrapping_key_mask[24];       /* 0x0048 */
764         __u8   aes_wrapping_key_mask[32];       /* 0x0060 */
765         struct kvm_s390_apcb1 apcb1;            /* 0x0080 */
766 };
767
768 struct kvm_s390_gisa {
769         union {
770                 struct { /* common to all formats */
771                         u32 next_alert;
772                         u8  ipm;
773                         u8  reserved01[2];
774                         u8  iam;
775                 };
776                 struct { /* format 0 */
777                         u32 next_alert;
778                         u8  ipm;
779                         u8  reserved01;
780                         u8  : 6;
781                         u8  g : 1;
782                         u8  c : 1;
783                         u8  iam;
784                         u8  reserved02[4];
785                         u32 airq_count;
786                 } g0;
787                 struct { /* format 1 */
788                         u32 next_alert;
789                         u8  ipm;
790                         u8  simm;
791                         u8  nimm;
792                         u8  iam;
793                         u8  aism[8];
794                         u8  : 6;
795                         u8  g : 1;
796                         u8  c : 1;
797                         u8  reserved03[11];
798                         u32 airq_count;
799                 } g1;
800                 struct {
801                         u64 word[4];
802                 } u64;
803         };
804 };
805
806 struct kvm_s390_gib {
807         u32 alert_list_origin;
808         u32 reserved01;
809         u8:5;
810         u8  nisc:3;
811         u8  reserved03[3];
812         u32 reserved04[5];
813 };
814
815 /*
816  * sie_page2 has to be allocated as DMA because fac_list, crycb and
817  * gisa need 31bit addresses in the sie control block.
818  */
819 struct sie_page2 {
820         __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
821         struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
822         struct kvm_s390_gisa gisa;                      /* 0x0900 */
823         struct kvm *kvm;                                /* 0x0920 */
824         u8 reserved928[0x1000 - 0x928];                 /* 0x0928 */
825 };
826
827 struct kvm_s390_vsie {
828         struct mutex mutex;
829         struct radix_tree_root addr_to_page;
830         int page_count;
831         int next;
832         struct page *pages[KVM_MAX_VCPUS];
833 };
834
835 struct kvm_s390_gisa_iam {
836         u8 mask;
837         spinlock_t ref_lock;
838         u32 ref_count[MAX_ISC + 1];
839 };
840
841 struct kvm_s390_gisa_interrupt {
842         struct kvm_s390_gisa *origin;
843         struct kvm_s390_gisa_iam alert;
844         struct hrtimer timer;
845         u64 expires;
846         DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
847 };
848
849 struct kvm_arch{
850         void *sca;
851         int use_esca;
852         rwlock_t sca_lock;
853         debug_info_t *dbf;
854         struct kvm_s390_float_interrupt float_int;
855         struct kvm_device *flic;
856         struct gmap *gmap;
857         unsigned long mem_limit;
858         int css_support;
859         int use_irqchip;
860         int use_cmma;
861         int use_pfmfi;
862         int use_skf;
863         int user_cpu_state_ctrl;
864         int user_sigp;
865         int user_stsi;
866         int user_instr0;
867         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
868         wait_queue_head_t ipte_wq;
869         int ipte_lock_count;
870         struct mutex ipte_mutex;
871         spinlock_t start_stop_lock;
872         struct sie_page2 *sie_page2;
873         struct kvm_s390_cpu_model model;
874         struct kvm_s390_crypto crypto;
875         struct kvm_s390_vsie vsie;
876         u8 epdx;
877         u64 epoch;
878         int migration_mode;
879         atomic64_t cmma_dirty_pages;
880         /* subset of available cpu features enabled by user space */
881         DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
882         DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
883         struct kvm_s390_gisa_interrupt gisa_int;
884 };
885
886 #define KVM_HVA_ERR_BAD         (-1UL)
887 #define KVM_HVA_ERR_RO_BAD      (-2UL)
888
889 static inline bool kvm_is_error_hva(unsigned long addr)
890 {
891         return IS_ERR_VALUE(addr);
892 }
893
894 #define ASYNC_PF_PER_VCPU       64
895 struct kvm_arch_async_pf {
896         unsigned long pfault_token;
897 };
898
899 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
900
901 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
902                                struct kvm_async_pf *work);
903
904 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
905                                      struct kvm_async_pf *work);
906
907 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
908                                  struct kvm_async_pf *work);
909
910 void kvm_arch_crypto_clear_masks(struct kvm *kvm);
911 void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
912                                unsigned long *aqm, unsigned long *adm);
913
914 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
915 extern char sie_exit;
916
917 extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
918 extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
919
920 static inline void kvm_arch_hardware_disable(void) {}
921 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
922 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
923 static inline void kvm_arch_free_memslot(struct kvm *kvm,
924                 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
925 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
926 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
927 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
928                 struct kvm_memory_slot *slot) {}
929 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
930 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
931
932 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
933
934 #endif