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[linux.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 <asm/debug.h>
22 #include <asm/cpu.h>
23 #include <asm/fpu/api.h>
24 #include <asm/isc.h>
25 #include <asm/guarded_storage.h>
26
27 #define KVM_S390_BSCA_CPU_SLOTS 64
28 #define KVM_S390_ESCA_CPU_SLOTS 248
29 #define KVM_MAX_VCPUS 255
30 #define KVM_USER_MEM_SLOTS 32
31
32 /*
33  * These seem to be used for allocating ->chip in the routing table,
34  * which we don't use. 4096 is an out-of-thin-air value. If we need
35  * to look at ->chip later on, we'll need to revisit this.
36  */
37 #define KVM_NR_IRQCHIPS 1
38 #define KVM_IRQCHIP_NUM_PINS 4096
39 #define KVM_HALT_POLL_NS_DEFAULT 80000
40
41 /* s390-specific vcpu->requests bit members */
42 #define KVM_REQ_ENABLE_IBS      KVM_ARCH_REQ(0)
43 #define KVM_REQ_DISABLE_IBS     KVM_ARCH_REQ(1)
44 #define KVM_REQ_ICPT_OPEREXC    KVM_ARCH_REQ(2)
45 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
46 #define KVM_REQ_STOP_MIGRATION  KVM_ARCH_REQ(4)
47
48 #define SIGP_CTRL_C             0x80
49 #define SIGP_CTRL_SCN_MASK      0x3f
50
51 union bsca_sigp_ctrl {
52         __u8 value;
53         struct {
54                 __u8 c : 1;
55                 __u8 r : 1;
56                 __u8 scn : 6;
57         };
58 };
59
60 union esca_sigp_ctrl {
61         __u16 value;
62         struct {
63                 __u8 c : 1;
64                 __u8 reserved: 7;
65                 __u8 scn;
66         };
67 };
68
69 struct esca_entry {
70         union esca_sigp_ctrl sigp_ctrl;
71         __u16   reserved1[3];
72         __u64   sda;
73         __u64   reserved2[6];
74 };
75
76 struct bsca_entry {
77         __u8    reserved0;
78         union bsca_sigp_ctrl    sigp_ctrl;
79         __u16   reserved[3];
80         __u64   sda;
81         __u64   reserved2[2];
82 };
83
84 union ipte_control {
85         unsigned long val;
86         struct {
87                 unsigned long k  : 1;
88                 unsigned long kh : 31;
89                 unsigned long kg : 32;
90         };
91 };
92
93 struct bsca_block {
94         union ipte_control ipte_control;
95         __u64   reserved[5];
96         __u64   mcn;
97         __u64   reserved2;
98         struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
99 };
100
101 struct esca_block {
102         union ipte_control ipte_control;
103         __u64   reserved1[7];
104         __u64   mcn[4];
105         __u64   reserved2[20];
106         struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
107 };
108
109 /*
110  * This struct is used to store some machine check info from lowcore
111  * for machine checks that happen while the guest is running.
112  * This info in host's lowcore might be overwritten by a second machine
113  * check from host when host is in the machine check's high-level handling.
114  * The size is 24 bytes.
115  */
116 struct mcck_volatile_info {
117         __u64 mcic;
118         __u64 failing_storage_address;
119         __u32 ext_damage_code;
120         __u32 reserved;
121 };
122
123 #define CPUSTAT_STOPPED    0x80000000
124 #define CPUSTAT_WAIT       0x10000000
125 #define CPUSTAT_ECALL_PEND 0x08000000
126 #define CPUSTAT_STOP_INT   0x04000000
127 #define CPUSTAT_IO_INT     0x02000000
128 #define CPUSTAT_EXT_INT    0x01000000
129 #define CPUSTAT_RUNNING    0x00800000
130 #define CPUSTAT_RETAINED   0x00400000
131 #define CPUSTAT_TIMING_SUB 0x00020000
132 #define CPUSTAT_SIE_SUB    0x00010000
133 #define CPUSTAT_RRF        0x00008000
134 #define CPUSTAT_SLSV       0x00004000
135 #define CPUSTAT_SLSR       0x00002000
136 #define CPUSTAT_ZARCH      0x00000800
137 #define CPUSTAT_MCDS       0x00000100
138 #define CPUSTAT_KSS        0x00000200
139 #define CPUSTAT_SM         0x00000080
140 #define CPUSTAT_IBS        0x00000040
141 #define CPUSTAT_GED2       0x00000010
142 #define CPUSTAT_G          0x00000008
143 #define CPUSTAT_GED        0x00000004
144 #define CPUSTAT_J          0x00000002
145 #define CPUSTAT_P          0x00000001
146
147 struct kvm_s390_sie_block {
148         atomic_t cpuflags;              /* 0x0000 */
149         __u32 : 1;                      /* 0x0004 */
150         __u32 prefix : 18;
151         __u32 : 1;
152         __u32 ibc : 12;
153         __u8    reserved08[4];          /* 0x0008 */
154 #define PROG_IN_SIE (1<<0)
155         __u32   prog0c;                 /* 0x000c */
156         __u8    reserved10[16];         /* 0x0010 */
157 #define PROG_BLOCK_SIE  (1<<0)
158 #define PROG_REQUEST    (1<<1)
159         atomic_t prog20;                /* 0x0020 */
160         __u8    reserved24[4];          /* 0x0024 */
161         __u64   cputm;                  /* 0x0028 */
162         __u64   ckc;                    /* 0x0030 */
163         __u64   epoch;                  /* 0x0038 */
164         __u32   svcc;                   /* 0x0040 */
165 #define LCTL_CR0        0x8000
166 #define LCTL_CR6        0x0200
167 #define LCTL_CR9        0x0040
168 #define LCTL_CR10       0x0020
169 #define LCTL_CR11       0x0010
170 #define LCTL_CR14       0x0002
171         __u16   lctl;                   /* 0x0044 */
172         __s16   icpua;                  /* 0x0046 */
173 #define ICTL_OPEREXC    0x80000000
174 #define ICTL_PINT       0x20000000
175 #define ICTL_LPSW       0x00400000
176 #define ICTL_STCTL      0x00040000
177 #define ICTL_ISKE       0x00004000
178 #define ICTL_SSKE       0x00002000
179 #define ICTL_RRBE       0x00001000
180 #define ICTL_TPROT      0x00000200
181         __u32   ictl;                   /* 0x0048 */
182 #define ECA_CEI         0x80000000
183 #define ECA_IB          0x40000000
184 #define ECA_SIGPI       0x10000000
185 #define ECA_MVPGI       0x01000000
186 #define ECA_AIV         0x00200000
187 #define ECA_VX          0x00020000
188 #define ECA_PROTEXCI    0x00002000
189 #define ECA_SII         0x00000001
190         __u32   eca;                    /* 0x004c */
191 #define ICPT_INST       0x04
192 #define ICPT_PROGI      0x08
193 #define ICPT_INSTPROGI  0x0C
194 #define ICPT_EXTREQ     0x10
195 #define ICPT_EXTINT     0x14
196 #define ICPT_IOREQ      0x18
197 #define ICPT_WAIT       0x1c
198 #define ICPT_VALIDITY   0x20
199 #define ICPT_STOP       0x28
200 #define ICPT_OPEREXC    0x2C
201 #define ICPT_PARTEXEC   0x38
202 #define ICPT_IOINST     0x40
203 #define ICPT_KSS        0x5c
204         __u8    icptcode;               /* 0x0050 */
205         __u8    icptstatus;             /* 0x0051 */
206         __u16   ihcpu;                  /* 0x0052 */
207         __u8    reserved54[2];          /* 0x0054 */
208         __u16   ipa;                    /* 0x0056 */
209         __u32   ipb;                    /* 0x0058 */
210         __u32   scaoh;                  /* 0x005c */
211 #define FPF_BPBC        0x20
212         __u8    fpf;                    /* 0x0060 */
213 #define ECB_GS          0x40
214 #define ECB_TE          0x10
215 #define ECB_SRSI        0x04
216 #define ECB_HOSTPROTINT 0x02
217         __u8    ecb;                    /* 0x0061 */
218 #define ECB2_CMMA       0x80
219 #define ECB2_IEP        0x20
220 #define ECB2_PFMFI      0x08
221 #define ECB2_ESCA       0x04
222         __u8    ecb2;                   /* 0x0062 */
223 #define ECB3_DEA 0x08
224 #define ECB3_AES 0x04
225 #define ECB3_RI  0x01
226         __u8    ecb3;                   /* 0x0063 */
227         __u32   scaol;                  /* 0x0064 */
228         __u8    reserved68;             /* 0x0068 */
229         __u8    epdx;                   /* 0x0069 */
230         __u8    reserved6a[2];          /* 0x006a */
231         __u32   todpr;                  /* 0x006c */
232 #define GISA_FORMAT1 0x00000001
233         __u32   gd;                     /* 0x0070 */
234         __u8    reserved74[12];         /* 0x0074 */
235         __u64   mso;                    /* 0x0080 */
236         __u64   msl;                    /* 0x0088 */
237         psw_t   gpsw;                   /* 0x0090 */
238         __u64   gg14;                   /* 0x00a0 */
239         __u64   gg15;                   /* 0x00a8 */
240         __u8    reservedb0[20];         /* 0x00b0 */
241         __u16   extcpuaddr;             /* 0x00c4 */
242         __u16   eic;                    /* 0x00c6 */
243         __u32   reservedc8;             /* 0x00c8 */
244         __u16   pgmilc;                 /* 0x00cc */
245         __u16   iprcc;                  /* 0x00ce */
246         __u32   dxc;                    /* 0x00d0 */
247         __u16   mcn;                    /* 0x00d4 */
248         __u8    perc;                   /* 0x00d6 */
249         __u8    peratmid;               /* 0x00d7 */
250         __u64   peraddr;                /* 0x00d8 */
251         __u8    eai;                    /* 0x00e0 */
252         __u8    peraid;                 /* 0x00e1 */
253         __u8    oai;                    /* 0x00e2 */
254         __u8    armid;                  /* 0x00e3 */
255         __u8    reservede4[4];          /* 0x00e4 */
256         __u64   tecmc;                  /* 0x00e8 */
257         __u8    reservedf0[12];         /* 0x00f0 */
258 #define CRYCB_FORMAT1 0x00000001
259 #define CRYCB_FORMAT2 0x00000003
260         __u32   crycbd;                 /* 0x00fc */
261         __u64   gcr[16];                /* 0x0100 */
262         __u64   gbea;                   /* 0x0180 */
263         __u8    reserved188[8];         /* 0x0188 */
264         __u64   sdnxo;                  /* 0x0190 */
265         __u8    reserved198[8];         /* 0x0198 */
266         __u32   fac;                    /* 0x01a0 */
267         __u8    reserved1a4[20];        /* 0x01a4 */
268         __u64   cbrlo;                  /* 0x01b8 */
269         __u8    reserved1c0[8];         /* 0x01c0 */
270 #define ECD_HOSTREGMGMT 0x20000000
271 #define ECD_MEF         0x08000000
272         __u32   ecd;                    /* 0x01c8 */
273         __u8    reserved1cc[18];        /* 0x01cc */
274         __u64   pp;                     /* 0x01de */
275         __u8    reserved1e6[2];         /* 0x01e6 */
276         __u64   itdba;                  /* 0x01e8 */
277         __u64   riccbd;                 /* 0x01f0 */
278         __u64   gvrd;                   /* 0x01f8 */
279 } __attribute__((packed));
280
281 struct kvm_s390_itdb {
282         __u8    data[256];
283 };
284
285 struct sie_page {
286         struct kvm_s390_sie_block sie_block;
287         struct mcck_volatile_info mcck_info;    /* 0x0200 */
288         __u8 reserved218[1000];         /* 0x0218 */
289         struct kvm_s390_itdb itdb;      /* 0x0600 */
290         __u8 reserved700[2304];         /* 0x0700 */
291 };
292
293 struct kvm_vcpu_stat {
294         u64 exit_userspace;
295         u64 exit_null;
296         u64 exit_external_request;
297         u64 exit_io_request;
298         u64 exit_external_interrupt;
299         u64 exit_stop_request;
300         u64 exit_validity;
301         u64 exit_instruction;
302         u64 exit_pei;
303         u64 halt_successful_poll;
304         u64 halt_attempted_poll;
305         u64 halt_poll_invalid;
306         u64 halt_wakeup;
307         u64 instruction_lctl;
308         u64 instruction_lctlg;
309         u64 instruction_stctl;
310         u64 instruction_stctg;
311         u64 exit_program_interruption;
312         u64 exit_instr_and_program;
313         u64 exit_operation_exception;
314         u64 deliver_ckc;
315         u64 deliver_cputm;
316         u64 deliver_external_call;
317         u64 deliver_emergency_signal;
318         u64 deliver_service_signal;
319         u64 deliver_virtio;
320         u64 deliver_stop_signal;
321         u64 deliver_prefix_signal;
322         u64 deliver_restart_signal;
323         u64 deliver_program;
324         u64 deliver_io;
325         u64 deliver_machine_check;
326         u64 exit_wait_state;
327         u64 inject_ckc;
328         u64 inject_cputm;
329         u64 inject_external_call;
330         u64 inject_emergency_signal;
331         u64 inject_mchk;
332         u64 inject_pfault_init;
333         u64 inject_program;
334         u64 inject_restart;
335         u64 inject_set_prefix;
336         u64 inject_stop_signal;
337         u64 instruction_epsw;
338         u64 instruction_gs;
339         u64 instruction_io_other;
340         u64 instruction_lpsw;
341         u64 instruction_lpswe;
342         u64 instruction_pfmf;
343         u64 instruction_ptff;
344         u64 instruction_sck;
345         u64 instruction_sckpf;
346         u64 instruction_stidp;
347         u64 instruction_spx;
348         u64 instruction_stpx;
349         u64 instruction_stap;
350         u64 instruction_iske;
351         u64 instruction_ri;
352         u64 instruction_rrbe;
353         u64 instruction_sske;
354         u64 instruction_ipte_interlock;
355         u64 instruction_stsi;
356         u64 instruction_stfl;
357         u64 instruction_tb;
358         u64 instruction_tpi;
359         u64 instruction_tprot;
360         u64 instruction_tsch;
361         u64 instruction_sie;
362         u64 instruction_essa;
363         u64 instruction_sthyi;
364         u64 instruction_sigp_sense;
365         u64 instruction_sigp_sense_running;
366         u64 instruction_sigp_external_call;
367         u64 instruction_sigp_emergency;
368         u64 instruction_sigp_cond_emergency;
369         u64 instruction_sigp_start;
370         u64 instruction_sigp_stop;
371         u64 instruction_sigp_stop_store_status;
372         u64 instruction_sigp_store_status;
373         u64 instruction_sigp_store_adtl_status;
374         u64 instruction_sigp_arch;
375         u64 instruction_sigp_prefix;
376         u64 instruction_sigp_restart;
377         u64 instruction_sigp_init_cpu_reset;
378         u64 instruction_sigp_cpu_reset;
379         u64 instruction_sigp_unknown;
380         u64 diagnose_10;
381         u64 diagnose_44;
382         u64 diagnose_9c;
383         u64 diagnose_258;
384         u64 diagnose_308;
385         u64 diagnose_500;
386         u64 diagnose_other;
387 };
388
389 #define PGM_OPERATION                   0x01
390 #define PGM_PRIVILEGED_OP               0x02
391 #define PGM_EXECUTE                     0x03
392 #define PGM_PROTECTION                  0x04
393 #define PGM_ADDRESSING                  0x05
394 #define PGM_SPECIFICATION               0x06
395 #define PGM_DATA                        0x07
396 #define PGM_FIXED_POINT_OVERFLOW        0x08
397 #define PGM_FIXED_POINT_DIVIDE          0x09
398 #define PGM_DECIMAL_OVERFLOW            0x0a
399 #define PGM_DECIMAL_DIVIDE              0x0b
400 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
401 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
402 #define PGM_HFP_SIGNIFICANCE            0x0e
403 #define PGM_HFP_DIVIDE                  0x0f
404 #define PGM_SEGMENT_TRANSLATION         0x10
405 #define PGM_PAGE_TRANSLATION            0x11
406 #define PGM_TRANSLATION_SPEC            0x12
407 #define PGM_SPECIAL_OPERATION           0x13
408 #define PGM_OPERAND                     0x15
409 #define PGM_TRACE_TABEL                 0x16
410 #define PGM_VECTOR_PROCESSING           0x1b
411 #define PGM_SPACE_SWITCH                0x1c
412 #define PGM_HFP_SQUARE_ROOT             0x1d
413 #define PGM_PC_TRANSLATION_SPEC         0x1f
414 #define PGM_AFX_TRANSLATION             0x20
415 #define PGM_ASX_TRANSLATION             0x21
416 #define PGM_LX_TRANSLATION              0x22
417 #define PGM_EX_TRANSLATION              0x23
418 #define PGM_PRIMARY_AUTHORITY           0x24
419 #define PGM_SECONDARY_AUTHORITY         0x25
420 #define PGM_LFX_TRANSLATION             0x26
421 #define PGM_LSX_TRANSLATION             0x27
422 #define PGM_ALET_SPECIFICATION          0x28
423 #define PGM_ALEN_TRANSLATION            0x29
424 #define PGM_ALE_SEQUENCE                0x2a
425 #define PGM_ASTE_VALIDITY               0x2b
426 #define PGM_ASTE_SEQUENCE               0x2c
427 #define PGM_EXTENDED_AUTHORITY          0x2d
428 #define PGM_LSTE_SEQUENCE               0x2e
429 #define PGM_ASTE_INSTANCE               0x2f
430 #define PGM_STACK_FULL                  0x30
431 #define PGM_STACK_EMPTY                 0x31
432 #define PGM_STACK_SPECIFICATION         0x32
433 #define PGM_STACK_TYPE                  0x33
434 #define PGM_STACK_OPERATION             0x34
435 #define PGM_ASCE_TYPE                   0x38
436 #define PGM_REGION_FIRST_TRANS          0x39
437 #define PGM_REGION_SECOND_TRANS         0x3a
438 #define PGM_REGION_THIRD_TRANS          0x3b
439 #define PGM_MONITOR                     0x40
440 #define PGM_PER                         0x80
441 #define PGM_CRYPTO_OPERATION            0x119
442
443 /* irq types in ascend order of priorities */
444 enum irq_types {
445         IRQ_PEND_SET_PREFIX = 0,
446         IRQ_PEND_RESTART,
447         IRQ_PEND_SIGP_STOP,
448         IRQ_PEND_IO_ISC_7,
449         IRQ_PEND_IO_ISC_6,
450         IRQ_PEND_IO_ISC_5,
451         IRQ_PEND_IO_ISC_4,
452         IRQ_PEND_IO_ISC_3,
453         IRQ_PEND_IO_ISC_2,
454         IRQ_PEND_IO_ISC_1,
455         IRQ_PEND_IO_ISC_0,
456         IRQ_PEND_VIRTIO,
457         IRQ_PEND_PFAULT_DONE,
458         IRQ_PEND_PFAULT_INIT,
459         IRQ_PEND_EXT_HOST,
460         IRQ_PEND_EXT_SERVICE,
461         IRQ_PEND_EXT_TIMING,
462         IRQ_PEND_EXT_CPU_TIMER,
463         IRQ_PEND_EXT_CLOCK_COMP,
464         IRQ_PEND_EXT_EXTERNAL,
465         IRQ_PEND_EXT_EMERGENCY,
466         IRQ_PEND_EXT_MALFUNC,
467         IRQ_PEND_EXT_IRQ_KEY,
468         IRQ_PEND_MCHK_REP,
469         IRQ_PEND_PROG,
470         IRQ_PEND_SVC,
471         IRQ_PEND_MCHK_EX,
472         IRQ_PEND_COUNT
473 };
474
475 /* We have 2M for virtio device descriptor pages. Smallest amount of
476  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
477  */
478 #define KVM_S390_MAX_VIRTIO_IRQS 87381
479
480 /*
481  * Repressible (non-floating) machine check interrupts
482  * subclass bits in MCIC
483  */
484 #define MCHK_EXTD_BIT 58
485 #define MCHK_DEGR_BIT 56
486 #define MCHK_WARN_BIT 55
487 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
488                        (1UL << MCHK_EXTD_BIT) | \
489                        (1UL << MCHK_WARN_BIT))
490
491 /* Exigent machine check interrupts subclass bits in MCIC */
492 #define MCHK_SD_BIT 63
493 #define MCHK_PD_BIT 62
494 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
495
496 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
497                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
498                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
499                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
500                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
501                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
502                            (1UL << IRQ_PEND_EXT_TIMING)     | \
503                            (1UL << IRQ_PEND_EXT_HOST)       | \
504                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
505                            (1UL << IRQ_PEND_VIRTIO)         | \
506                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
507                            (1UL << IRQ_PEND_PFAULT_DONE))
508
509 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
510                           (1UL << IRQ_PEND_IO_ISC_1) | \
511                           (1UL << IRQ_PEND_IO_ISC_2) | \
512                           (1UL << IRQ_PEND_IO_ISC_3) | \
513                           (1UL << IRQ_PEND_IO_ISC_4) | \
514                           (1UL << IRQ_PEND_IO_ISC_5) | \
515                           (1UL << IRQ_PEND_IO_ISC_6) | \
516                           (1UL << IRQ_PEND_IO_ISC_7))
517
518 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
519                             (1UL << IRQ_PEND_MCHK_EX))
520
521 struct kvm_s390_interrupt_info {
522         struct list_head list;
523         u64     type;
524         union {
525                 struct kvm_s390_io_info io;
526                 struct kvm_s390_ext_info ext;
527                 struct kvm_s390_pgm_info pgm;
528                 struct kvm_s390_emerg_info emerg;
529                 struct kvm_s390_extcall_info extcall;
530                 struct kvm_s390_prefix_info prefix;
531                 struct kvm_s390_stop_info stop;
532                 struct kvm_s390_mchk_info mchk;
533         };
534 };
535
536 struct kvm_s390_irq_payload {
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 struct kvm_s390_local_interrupt {
548         spinlock_t lock;
549         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
550         struct kvm_s390_irq_payload irq;
551         unsigned long pending_irqs;
552 };
553
554 #define FIRQ_LIST_IO_ISC_0 0
555 #define FIRQ_LIST_IO_ISC_1 1
556 #define FIRQ_LIST_IO_ISC_2 2
557 #define FIRQ_LIST_IO_ISC_3 3
558 #define FIRQ_LIST_IO_ISC_4 4
559 #define FIRQ_LIST_IO_ISC_5 5
560 #define FIRQ_LIST_IO_ISC_6 6
561 #define FIRQ_LIST_IO_ISC_7 7
562 #define FIRQ_LIST_PFAULT   8
563 #define FIRQ_LIST_VIRTIO   9
564 #define FIRQ_LIST_COUNT   10
565 #define FIRQ_CNTR_IO       0
566 #define FIRQ_CNTR_SERVICE  1
567 #define FIRQ_CNTR_VIRTIO   2
568 #define FIRQ_CNTR_PFAULT   3
569 #define FIRQ_MAX_COUNT     4
570
571 /* mask the AIS mode for a given ISC */
572 #define AIS_MODE_MASK(isc) (0x80 >> isc)
573
574 #define KVM_S390_AIS_MODE_ALL    0
575 #define KVM_S390_AIS_MODE_SINGLE 1
576
577 struct kvm_s390_float_interrupt {
578         unsigned long pending_irqs;
579         spinlock_t lock;
580         struct list_head lists[FIRQ_LIST_COUNT];
581         int counters[FIRQ_MAX_COUNT];
582         struct kvm_s390_mchk_info mchk;
583         struct kvm_s390_ext_info srv_signal;
584         int next_rr_cpu;
585         unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
586         struct mutex ais_lock;
587         u8 simm;
588         u8 nimm;
589 };
590
591 struct kvm_hw_wp_info_arch {
592         unsigned long addr;
593         unsigned long phys_addr;
594         int len;
595         char *old_data;
596 };
597
598 struct kvm_hw_bp_info_arch {
599         unsigned long addr;
600         int len;
601 };
602
603 /*
604  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
605  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
606  * arch/s390/include/uapi/asm/kvm.h
607  */
608 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
609
610 #define guestdbg_enabled(vcpu) \
611                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
612 #define guestdbg_sstep_enabled(vcpu) \
613                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
614 #define guestdbg_hw_bp_enabled(vcpu) \
615                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
616 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
617                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
618
619 struct kvm_guestdbg_info_arch {
620         unsigned long cr0;
621         unsigned long cr9;
622         unsigned long cr10;
623         unsigned long cr11;
624         struct kvm_hw_bp_info_arch *hw_bp_info;
625         struct kvm_hw_wp_info_arch *hw_wp_info;
626         int nr_hw_bp;
627         int nr_hw_wp;
628         unsigned long last_bp;
629 };
630
631 struct kvm_vcpu_arch {
632         struct kvm_s390_sie_block *sie_block;
633         /* if vsie is active, currently executed shadow sie control block */
634         struct kvm_s390_sie_block *vsie_block;
635         unsigned int      host_acrs[NUM_ACRS];
636         struct gs_cb      *host_gscb;
637         struct fpu        host_fpregs;
638         struct kvm_s390_local_interrupt local_int;
639         struct hrtimer    ckc_timer;
640         struct kvm_s390_pgm_info pgm;
641         struct gmap *gmap;
642         /* backup location for the currently enabled gmap when scheduled out */
643         struct gmap *enabled_gmap;
644         struct kvm_guestdbg_info_arch guestdbg;
645         unsigned long pfault_token;
646         unsigned long pfault_select;
647         unsigned long pfault_compare;
648         bool cputm_enabled;
649         /*
650          * The seqcount protects updates to cputm_start and sie_block.cputm,
651          * this way we can have non-blocking reads with consistent values.
652          * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
653          * values and to start/stop/enable/disable cpu timer accounting.
654          */
655         seqcount_t cputm_seqcount;
656         __u64 cputm_start;
657         bool gs_enabled;
658 };
659
660 struct kvm_vm_stat {
661         u64 inject_io;
662         u64 inject_float_mchk;
663         u64 inject_pfault_done;
664         u64 inject_service_signal;
665         u64 inject_virtio;
666         u64 remote_tlb_flush;
667 };
668
669 struct kvm_arch_memory_slot {
670 };
671
672 struct s390_map_info {
673         struct list_head list;
674         __u64 guest_addr;
675         __u64 addr;
676         struct page *page;
677 };
678
679 struct s390_io_adapter {
680         unsigned int id;
681         int isc;
682         bool maskable;
683         bool masked;
684         bool swap;
685         bool suppressible;
686         struct rw_semaphore maps_lock;
687         struct list_head maps;
688         atomic_t nr_maps;
689 };
690
691 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
692 #define MAX_S390_ADAPTER_MAPS 256
693
694 /* maximum size of facilities and facility mask is 2k bytes */
695 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
696 #define S390_ARCH_FAC_LIST_SIZE_U64 \
697         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
698 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
699 #define S390_ARCH_FAC_MASK_SIZE_U64 \
700         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
701
702 struct kvm_s390_cpu_model {
703         /* facility mask supported by kvm & hosting machine */
704         __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
705         /* facility list requested by guest (in dma page) */
706         __u64 *fac_list;
707         u64 cpuid;
708         unsigned short ibc;
709 };
710
711 struct kvm_s390_crypto {
712         struct kvm_s390_crypto_cb *crycb;
713         __u32 crycbd;
714         __u8 aes_kw;
715         __u8 dea_kw;
716 };
717
718 #define APCB0_MASK_SIZE 1
719 struct kvm_s390_apcb0 {
720         __u64 apm[APCB0_MASK_SIZE];             /* 0x0000 */
721         __u64 aqm[APCB0_MASK_SIZE];             /* 0x0008 */
722         __u64 adm[APCB0_MASK_SIZE];             /* 0x0010 */
723         __u64 reserved18;                       /* 0x0018 */
724 };
725
726 #define APCB1_MASK_SIZE 4
727 struct kvm_s390_apcb1 {
728         __u64 apm[APCB1_MASK_SIZE];             /* 0x0000 */
729         __u64 aqm[APCB1_MASK_SIZE];             /* 0x0020 */
730         __u64 adm[APCB1_MASK_SIZE];             /* 0x0040 */
731         __u64 reserved60[4];                    /* 0x0060 */
732 };
733
734 struct kvm_s390_crypto_cb {
735         struct kvm_s390_apcb0 apcb0;            /* 0x0000 */
736         __u8   reserved20[0x0048 - 0x0020];     /* 0x0020 */
737         __u8   dea_wrapping_key_mask[24];       /* 0x0048 */
738         __u8   aes_wrapping_key_mask[32];       /* 0x0060 */
739         struct kvm_s390_apcb1 apcb1;            /* 0x0080 */
740 };
741
742 struct kvm_s390_gisa {
743         union {
744                 struct { /* common to all formats */
745                         u32 next_alert;
746                         u8  ipm;
747                         u8  reserved01[2];
748                         u8  iam;
749                 };
750                 struct { /* format 0 */
751                         u32 next_alert;
752                         u8  ipm;
753                         u8  reserved01;
754                         u8  : 6;
755                         u8  g : 1;
756                         u8  c : 1;
757                         u8  iam;
758                         u8  reserved02[4];
759                         u32 airq_count;
760                 } g0;
761                 struct { /* format 1 */
762                         u32 next_alert;
763                         u8  ipm;
764                         u8  simm;
765                         u8  nimm;
766                         u8  iam;
767                         u8  aism[8];
768                         u8  : 6;
769                         u8  g : 1;
770                         u8  c : 1;
771                         u8  reserved03[11];
772                         u32 airq_count;
773                 } g1;
774         };
775 };
776
777 /*
778  * sie_page2 has to be allocated as DMA because fac_list, crycb and
779  * gisa need 31bit addresses in the sie control block.
780  */
781 struct sie_page2 {
782         __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
783         struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
784         struct kvm_s390_gisa gisa;                      /* 0x0900 */
785         u8 reserved920[0x1000 - 0x920];                 /* 0x0920 */
786 };
787
788 struct kvm_s390_vsie {
789         struct mutex mutex;
790         struct radix_tree_root addr_to_page;
791         int page_count;
792         int next;
793         struct page *pages[KVM_MAX_VCPUS];
794 };
795
796 struct kvm_s390_migration_state {
797         unsigned long bitmap_size;      /* in bits (number of guest pages) */
798         atomic64_t dirty_pages;         /* number of dirty pages */
799         unsigned long *pgste_bitmap;
800 };
801
802 struct kvm_arch{
803         void *sca;
804         int use_esca;
805         rwlock_t sca_lock;
806         debug_info_t *dbf;
807         struct kvm_s390_float_interrupt float_int;
808         struct kvm_device *flic;
809         struct gmap *gmap;
810         unsigned long mem_limit;
811         int css_support;
812         int use_irqchip;
813         int use_cmma;
814         int use_pfmfi;
815         int user_cpu_state_ctrl;
816         int user_sigp;
817         int user_stsi;
818         int user_instr0;
819         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
820         wait_queue_head_t ipte_wq;
821         int ipte_lock_count;
822         struct mutex ipte_mutex;
823         spinlock_t start_stop_lock;
824         struct sie_page2 *sie_page2;
825         struct kvm_s390_cpu_model model;
826         struct kvm_s390_crypto crypto;
827         struct kvm_s390_vsie vsie;
828         u8 epdx;
829         u64 epoch;
830         struct kvm_s390_migration_state *migration_state;
831         /* subset of available cpu features enabled by user space */
832         DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
833         struct kvm_s390_gisa *gisa;
834 };
835
836 #define KVM_HVA_ERR_BAD         (-1UL)
837 #define KVM_HVA_ERR_RO_BAD      (-2UL)
838
839 static inline bool kvm_is_error_hva(unsigned long addr)
840 {
841         return IS_ERR_VALUE(addr);
842 }
843
844 #define ASYNC_PF_PER_VCPU       64
845 struct kvm_arch_async_pf {
846         unsigned long pfault_token;
847 };
848
849 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
850
851 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
852                                struct kvm_async_pf *work);
853
854 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
855                                      struct kvm_async_pf *work);
856
857 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
858                                  struct kvm_async_pf *work);
859
860 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
861 extern char sie_exit;
862
863 static inline void kvm_arch_hardware_disable(void) {}
864 static inline void kvm_arch_check_processor_compat(void *rtn) {}
865 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
866 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
867 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
868 static inline void kvm_arch_free_memslot(struct kvm *kvm,
869                 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
870 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
871 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
872 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
873                 struct kvm_memory_slot *slot) {}
874 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
875 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
876
877 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
878
879 #endif