Merge tag 'nand/for-4.16' of git://git.infradead.org/linux-mtd into mtd/next
[linux-2.6-microblaze.git] / arch / s390 / include / asm / kvm_host.h
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 #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 #define KVM_USER_MEM_SLOTS 32
34
35 /*
36  * These seem to be used for allocating ->chip in the routing table,
37  * which we don't use. 4096 is an out-of-thin-air value. If we need
38  * to look at ->chip later on, we'll need to revisit this.
39  */
40 #define KVM_NR_IRQCHIPS 1
41 #define KVM_IRQCHIP_NUM_PINS 4096
42 #define KVM_HALT_POLL_NS_DEFAULT 80000
43
44 /* s390-specific vcpu->requests bit members */
45 #define KVM_REQ_ENABLE_IBS      KVM_ARCH_REQ(0)
46 #define KVM_REQ_DISABLE_IBS     KVM_ARCH_REQ(1)
47 #define KVM_REQ_ICPT_OPEREXC    KVM_ARCH_REQ(2)
48 #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
49 #define KVM_REQ_STOP_MIGRATION  KVM_ARCH_REQ(4)
50
51 #define SIGP_CTRL_C             0x80
52 #define SIGP_CTRL_SCN_MASK      0x3f
53
54 union bsca_sigp_ctrl {
55         __u8 value;
56         struct {
57                 __u8 c : 1;
58                 __u8 r : 1;
59                 __u8 scn : 6;
60         };
61 };
62
63 union esca_sigp_ctrl {
64         __u16 value;
65         struct {
66                 __u8 c : 1;
67                 __u8 reserved: 7;
68                 __u8 scn;
69         };
70 };
71
72 struct esca_entry {
73         union esca_sigp_ctrl sigp_ctrl;
74         __u16   reserved1[3];
75         __u64   sda;
76         __u64   reserved2[6];
77 };
78
79 struct bsca_entry {
80         __u8    reserved0;
81         union bsca_sigp_ctrl    sigp_ctrl;
82         __u16   reserved[3];
83         __u64   sda;
84         __u64   reserved2[2];
85 };
86
87 union ipte_control {
88         unsigned long val;
89         struct {
90                 unsigned long k  : 1;
91                 unsigned long kh : 31;
92                 unsigned long kg : 32;
93         };
94 };
95
96 struct bsca_block {
97         union ipte_control ipte_control;
98         __u64   reserved[5];
99         __u64   mcn;
100         __u64   reserved2;
101         struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
102 };
103
104 struct esca_block {
105         union ipte_control ipte_control;
106         __u64   reserved1[7];
107         __u64   mcn[4];
108         __u64   reserved2[20];
109         struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
110 };
111
112 /*
113  * This struct is used to store some machine check info from lowcore
114  * for machine checks that happen while the guest is running.
115  * This info in host's lowcore might be overwritten by a second machine
116  * check from host when host is in the machine check's high-level handling.
117  * The size is 24 bytes.
118  */
119 struct mcck_volatile_info {
120         __u64 mcic;
121         __u64 failing_storage_address;
122         __u32 ext_damage_code;
123         __u32 reserved;
124 };
125
126 #define CPUSTAT_STOPPED    0x80000000
127 #define CPUSTAT_WAIT       0x10000000
128 #define CPUSTAT_ECALL_PEND 0x08000000
129 #define CPUSTAT_STOP_INT   0x04000000
130 #define CPUSTAT_IO_INT     0x02000000
131 #define CPUSTAT_EXT_INT    0x01000000
132 #define CPUSTAT_RUNNING    0x00800000
133 #define CPUSTAT_RETAINED   0x00400000
134 #define CPUSTAT_TIMING_SUB 0x00020000
135 #define CPUSTAT_SIE_SUB    0x00010000
136 #define CPUSTAT_RRF        0x00008000
137 #define CPUSTAT_SLSV       0x00004000
138 #define CPUSTAT_SLSR       0x00002000
139 #define CPUSTAT_ZARCH      0x00000800
140 #define CPUSTAT_MCDS       0x00000100
141 #define CPUSTAT_KSS        0x00000200
142 #define CPUSTAT_SM         0x00000080
143 #define CPUSTAT_IBS        0x00000040
144 #define CPUSTAT_GED2       0x00000010
145 #define CPUSTAT_G          0x00000008
146 #define CPUSTAT_GED        0x00000004
147 #define CPUSTAT_J          0x00000002
148 #define CPUSTAT_P          0x00000001
149
150 struct kvm_s390_sie_block {
151         atomic_t cpuflags;              /* 0x0000 */
152         __u32 : 1;                      /* 0x0004 */
153         __u32 prefix : 18;
154         __u32 : 1;
155         __u32 ibc : 12;
156         __u8    reserved08[4];          /* 0x0008 */
157 #define PROG_IN_SIE (1<<0)
158         __u32   prog0c;                 /* 0x000c */
159         __u8    reserved10[16];         /* 0x0010 */
160 #define PROG_BLOCK_SIE  (1<<0)
161 #define PROG_REQUEST    (1<<1)
162         atomic_t prog20;                /* 0x0020 */
163         __u8    reserved24[4];          /* 0x0024 */
164         __u64   cputm;                  /* 0x0028 */
165         __u64   ckc;                    /* 0x0030 */
166         __u64   epoch;                  /* 0x0038 */
167         __u32   svcc;                   /* 0x0040 */
168 #define LCTL_CR0        0x8000
169 #define LCTL_CR6        0x0200
170 #define LCTL_CR9        0x0040
171 #define LCTL_CR10       0x0020
172 #define LCTL_CR11       0x0010
173 #define LCTL_CR14       0x0002
174         __u16   lctl;                   /* 0x0044 */
175         __s16   icpua;                  /* 0x0046 */
176 #define ICTL_OPEREXC    0x80000000
177 #define ICTL_PINT       0x20000000
178 #define ICTL_LPSW       0x00400000
179 #define ICTL_STCTL      0x00040000
180 #define ICTL_ISKE       0x00004000
181 #define ICTL_SSKE       0x00002000
182 #define ICTL_RRBE       0x00001000
183 #define ICTL_TPROT      0x00000200
184         __u32   ictl;                   /* 0x0048 */
185 #define ECA_CEI         0x80000000
186 #define ECA_IB          0x40000000
187 #define ECA_SIGPI       0x10000000
188 #define ECA_MVPGI       0x01000000
189 #define ECA_VX          0x00020000
190 #define ECA_PROTEXCI    0x00002000
191 #define ECA_SII         0x00000001
192         __u32   eca;                    /* 0x004c */
193 #define ICPT_INST       0x04
194 #define ICPT_PROGI      0x08
195 #define ICPT_INSTPROGI  0x0C
196 #define ICPT_EXTREQ     0x10
197 #define ICPT_EXTINT     0x14
198 #define ICPT_IOREQ      0x18
199 #define ICPT_WAIT       0x1c
200 #define ICPT_VALIDITY   0x20
201 #define ICPT_STOP       0x28
202 #define ICPT_OPEREXC    0x2C
203 #define ICPT_PARTEXEC   0x38
204 #define ICPT_IOINST     0x40
205 #define ICPT_KSS        0x5c
206         __u8    icptcode;               /* 0x0050 */
207         __u8    icptstatus;             /* 0x0051 */
208         __u16   ihcpu;                  /* 0x0052 */
209         __u8    reserved54[2];          /* 0x0054 */
210         __u16   ipa;                    /* 0x0056 */
211         __u32   ipb;                    /* 0x0058 */
212         __u32   scaoh;                  /* 0x005c */
213         __u8    reserved60;             /* 0x0060 */
214 #define ECB_GS          0x40
215 #define ECB_TE          0x10
216 #define ECB_SRSI        0x04
217 #define ECB_HOSTPROTINT 0x02
218         __u8    ecb;                    /* 0x0061 */
219 #define ECB2_CMMA       0x80
220 #define ECB2_IEP        0x20
221 #define ECB2_PFMFI      0x08
222 #define ECB2_ESCA       0x04
223         __u8    ecb2;                   /* 0x0062 */
224 #define ECB3_DEA 0x08
225 #define ECB3_AES 0x04
226 #define ECB3_RI  0x01
227         __u8    ecb3;                   /* 0x0063 */
228         __u32   scaol;                  /* 0x0064 */
229         __u8    reserved68;             /* 0x0068 */
230         __u8    epdx;                   /* 0x0069 */
231         __u8    reserved6a[2];          /* 0x006a */
232         __u32   todpr;                  /* 0x006c */
233         __u8    reserved70[16];         /* 0x0070 */
234         __u64   mso;                    /* 0x0080 */
235         __u64   msl;                    /* 0x0088 */
236         psw_t   gpsw;                   /* 0x0090 */
237         __u64   gg14;                   /* 0x00a0 */
238         __u64   gg15;                   /* 0x00a8 */
239         __u8    reservedb0[20];         /* 0x00b0 */
240         __u16   extcpuaddr;             /* 0x00c4 */
241         __u16   eic;                    /* 0x00c6 */
242         __u32   reservedc8;             /* 0x00c8 */
243         __u16   pgmilc;                 /* 0x00cc */
244         __u16   iprcc;                  /* 0x00ce */
245         __u32   dxc;                    /* 0x00d0 */
246         __u16   mcn;                    /* 0x00d4 */
247         __u8    perc;                   /* 0x00d6 */
248         __u8    peratmid;               /* 0x00d7 */
249         __u64   peraddr;                /* 0x00d8 */
250         __u8    eai;                    /* 0x00e0 */
251         __u8    peraid;                 /* 0x00e1 */
252         __u8    oai;                    /* 0x00e2 */
253         __u8    armid;                  /* 0x00e3 */
254         __u8    reservede4[4];          /* 0x00e4 */
255         __u64   tecmc;                  /* 0x00e8 */
256         __u8    reservedf0[12];         /* 0x00f0 */
257 #define CRYCB_FORMAT1 0x00000001
258 #define CRYCB_FORMAT2 0x00000003
259         __u32   crycbd;                 /* 0x00fc */
260         __u64   gcr[16];                /* 0x0100 */
261         __u64   gbea;                   /* 0x0180 */
262         __u8    reserved188[8];         /* 0x0188 */
263         __u64   sdnxo;                  /* 0x0190 */
264         __u8    reserved198[8];         /* 0x0198 */
265         __u32   fac;                    /* 0x01a0 */
266         __u8    reserved1a4[20];        /* 0x01a4 */
267         __u64   cbrlo;                  /* 0x01b8 */
268         __u8    reserved1c0[8];         /* 0x01c0 */
269 #define ECD_HOSTREGMGMT 0x20000000
270 #define ECD_MEF         0x08000000
271         __u32   ecd;                    /* 0x01c8 */
272         __u8    reserved1cc[18];        /* 0x01cc */
273         __u64   pp;                     /* 0x01de */
274         __u8    reserved1e6[2];         /* 0x01e6 */
275         __u64   itdba;                  /* 0x01e8 */
276         __u64   riccbd;                 /* 0x01f0 */
277         __u64   gvrd;                   /* 0x01f8 */
278 } __attribute__((packed));
279
280 struct kvm_s390_itdb {
281         __u8    data[256];
282 };
283
284 struct sie_page {
285         struct kvm_s390_sie_block sie_block;
286         struct mcck_volatile_info mcck_info;    /* 0x0200 */
287         __u8 reserved218[1000];         /* 0x0218 */
288         struct kvm_s390_itdb itdb;      /* 0x0600 */
289         __u8 reserved700[2304];         /* 0x0700 */
290 };
291
292 struct kvm_vcpu_stat {
293         u64 exit_userspace;
294         u64 exit_null;
295         u64 exit_external_request;
296         u64 exit_external_interrupt;
297         u64 exit_stop_request;
298         u64 exit_validity;
299         u64 exit_instruction;
300         u64 exit_pei;
301         u64 halt_successful_poll;
302         u64 halt_attempted_poll;
303         u64 halt_poll_invalid;
304         u64 halt_wakeup;
305         u64 instruction_lctl;
306         u64 instruction_lctlg;
307         u64 instruction_stctl;
308         u64 instruction_stctg;
309         u64 exit_program_interruption;
310         u64 exit_instr_and_program;
311         u64 exit_operation_exception;
312         u64 deliver_external_call;
313         u64 deliver_emergency_signal;
314         u64 deliver_service_signal;
315         u64 deliver_virtio_interrupt;
316         u64 deliver_stop_signal;
317         u64 deliver_prefix_signal;
318         u64 deliver_restart_signal;
319         u64 deliver_program_int;
320         u64 deliver_io_int;
321         u64 exit_wait_state;
322         u64 instruction_pfmf;
323         u64 instruction_stidp;
324         u64 instruction_spx;
325         u64 instruction_stpx;
326         u64 instruction_stap;
327         u64 instruction_storage_key;
328         u64 instruction_ipte_interlock;
329         u64 instruction_stsch;
330         u64 instruction_chsc;
331         u64 instruction_stsi;
332         u64 instruction_stfl;
333         u64 instruction_tprot;
334         u64 instruction_sie;
335         u64 instruction_essa;
336         u64 instruction_sthyi;
337         u64 instruction_sigp_sense;
338         u64 instruction_sigp_sense_running;
339         u64 instruction_sigp_external_call;
340         u64 instruction_sigp_emergency;
341         u64 instruction_sigp_cond_emergency;
342         u64 instruction_sigp_start;
343         u64 instruction_sigp_stop;
344         u64 instruction_sigp_stop_store_status;
345         u64 instruction_sigp_store_status;
346         u64 instruction_sigp_store_adtl_status;
347         u64 instruction_sigp_arch;
348         u64 instruction_sigp_prefix;
349         u64 instruction_sigp_restart;
350         u64 instruction_sigp_init_cpu_reset;
351         u64 instruction_sigp_cpu_reset;
352         u64 instruction_sigp_unknown;
353         u64 diagnose_10;
354         u64 diagnose_44;
355         u64 diagnose_9c;
356         u64 diagnose_258;
357         u64 diagnose_308;
358         u64 diagnose_500;
359 };
360
361 #define PGM_OPERATION                   0x01
362 #define PGM_PRIVILEGED_OP               0x02
363 #define PGM_EXECUTE                     0x03
364 #define PGM_PROTECTION                  0x04
365 #define PGM_ADDRESSING                  0x05
366 #define PGM_SPECIFICATION               0x06
367 #define PGM_DATA                        0x07
368 #define PGM_FIXED_POINT_OVERFLOW        0x08
369 #define PGM_FIXED_POINT_DIVIDE          0x09
370 #define PGM_DECIMAL_OVERFLOW            0x0a
371 #define PGM_DECIMAL_DIVIDE              0x0b
372 #define PGM_HFP_EXPONENT_OVERFLOW       0x0c
373 #define PGM_HFP_EXPONENT_UNDERFLOW      0x0d
374 #define PGM_HFP_SIGNIFICANCE            0x0e
375 #define PGM_HFP_DIVIDE                  0x0f
376 #define PGM_SEGMENT_TRANSLATION         0x10
377 #define PGM_PAGE_TRANSLATION            0x11
378 #define PGM_TRANSLATION_SPEC            0x12
379 #define PGM_SPECIAL_OPERATION           0x13
380 #define PGM_OPERAND                     0x15
381 #define PGM_TRACE_TABEL                 0x16
382 #define PGM_VECTOR_PROCESSING           0x1b
383 #define PGM_SPACE_SWITCH                0x1c
384 #define PGM_HFP_SQUARE_ROOT             0x1d
385 #define PGM_PC_TRANSLATION_SPEC         0x1f
386 #define PGM_AFX_TRANSLATION             0x20
387 #define PGM_ASX_TRANSLATION             0x21
388 #define PGM_LX_TRANSLATION              0x22
389 #define PGM_EX_TRANSLATION              0x23
390 #define PGM_PRIMARY_AUTHORITY           0x24
391 #define PGM_SECONDARY_AUTHORITY         0x25
392 #define PGM_LFX_TRANSLATION             0x26
393 #define PGM_LSX_TRANSLATION             0x27
394 #define PGM_ALET_SPECIFICATION          0x28
395 #define PGM_ALEN_TRANSLATION            0x29
396 #define PGM_ALE_SEQUENCE                0x2a
397 #define PGM_ASTE_VALIDITY               0x2b
398 #define PGM_ASTE_SEQUENCE               0x2c
399 #define PGM_EXTENDED_AUTHORITY          0x2d
400 #define PGM_LSTE_SEQUENCE               0x2e
401 #define PGM_ASTE_INSTANCE               0x2f
402 #define PGM_STACK_FULL                  0x30
403 #define PGM_STACK_EMPTY                 0x31
404 #define PGM_STACK_SPECIFICATION         0x32
405 #define PGM_STACK_TYPE                  0x33
406 #define PGM_STACK_OPERATION             0x34
407 #define PGM_ASCE_TYPE                   0x38
408 #define PGM_REGION_FIRST_TRANS          0x39
409 #define PGM_REGION_SECOND_TRANS         0x3a
410 #define PGM_REGION_THIRD_TRANS          0x3b
411 #define PGM_MONITOR                     0x40
412 #define PGM_PER                         0x80
413 #define PGM_CRYPTO_OPERATION            0x119
414
415 /* irq types in order of priority */
416 enum irq_types {
417         IRQ_PEND_MCHK_EX = 0,
418         IRQ_PEND_SVC,
419         IRQ_PEND_PROG,
420         IRQ_PEND_MCHK_REP,
421         IRQ_PEND_EXT_IRQ_KEY,
422         IRQ_PEND_EXT_MALFUNC,
423         IRQ_PEND_EXT_EMERGENCY,
424         IRQ_PEND_EXT_EXTERNAL,
425         IRQ_PEND_EXT_CLOCK_COMP,
426         IRQ_PEND_EXT_CPU_TIMER,
427         IRQ_PEND_EXT_TIMING,
428         IRQ_PEND_EXT_SERVICE,
429         IRQ_PEND_EXT_HOST,
430         IRQ_PEND_PFAULT_INIT,
431         IRQ_PEND_PFAULT_DONE,
432         IRQ_PEND_VIRTIO,
433         IRQ_PEND_IO_ISC_0,
434         IRQ_PEND_IO_ISC_1,
435         IRQ_PEND_IO_ISC_2,
436         IRQ_PEND_IO_ISC_3,
437         IRQ_PEND_IO_ISC_4,
438         IRQ_PEND_IO_ISC_5,
439         IRQ_PEND_IO_ISC_6,
440         IRQ_PEND_IO_ISC_7,
441         IRQ_PEND_SIGP_STOP,
442         IRQ_PEND_RESTART,
443         IRQ_PEND_SET_PREFIX,
444         IRQ_PEND_COUNT
445 };
446
447 /* We have 2M for virtio device descriptor pages. Smallest amount of
448  * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
449  */
450 #define KVM_S390_MAX_VIRTIO_IRQS 87381
451
452 /*
453  * Repressible (non-floating) machine check interrupts
454  * subclass bits in MCIC
455  */
456 #define MCHK_EXTD_BIT 58
457 #define MCHK_DEGR_BIT 56
458 #define MCHK_WARN_BIT 55
459 #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
460                        (1UL << MCHK_EXTD_BIT) | \
461                        (1UL << MCHK_WARN_BIT))
462
463 /* Exigent machine check interrupts subclass bits in MCIC */
464 #define MCHK_SD_BIT 63
465 #define MCHK_PD_BIT 62
466 #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
467
468 #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
469                            (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
470                            (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
471                            (1UL << IRQ_PEND_EXT_MALFUNC)    | \
472                            (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
473                            (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
474                            (1UL << IRQ_PEND_EXT_TIMING)     | \
475                            (1UL << IRQ_PEND_EXT_HOST)       | \
476                            (1UL << IRQ_PEND_EXT_SERVICE)    | \
477                            (1UL << IRQ_PEND_VIRTIO)         | \
478                            (1UL << IRQ_PEND_PFAULT_INIT)    | \
479                            (1UL << IRQ_PEND_PFAULT_DONE))
480
481 #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
482                           (1UL << IRQ_PEND_IO_ISC_1) | \
483                           (1UL << IRQ_PEND_IO_ISC_2) | \
484                           (1UL << IRQ_PEND_IO_ISC_3) | \
485                           (1UL << IRQ_PEND_IO_ISC_4) | \
486                           (1UL << IRQ_PEND_IO_ISC_5) | \
487                           (1UL << IRQ_PEND_IO_ISC_6) | \
488                           (1UL << IRQ_PEND_IO_ISC_7))
489
490 #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
491                             (1UL << IRQ_PEND_MCHK_EX))
492
493 struct kvm_s390_interrupt_info {
494         struct list_head list;
495         u64     type;
496         union {
497                 struct kvm_s390_io_info io;
498                 struct kvm_s390_ext_info ext;
499                 struct kvm_s390_pgm_info pgm;
500                 struct kvm_s390_emerg_info emerg;
501                 struct kvm_s390_extcall_info extcall;
502                 struct kvm_s390_prefix_info prefix;
503                 struct kvm_s390_stop_info stop;
504                 struct kvm_s390_mchk_info mchk;
505         };
506 };
507
508 struct kvm_s390_irq_payload {
509         struct kvm_s390_io_info io;
510         struct kvm_s390_ext_info ext;
511         struct kvm_s390_pgm_info pgm;
512         struct kvm_s390_emerg_info emerg;
513         struct kvm_s390_extcall_info extcall;
514         struct kvm_s390_prefix_info prefix;
515         struct kvm_s390_stop_info stop;
516         struct kvm_s390_mchk_info mchk;
517 };
518
519 struct kvm_s390_local_interrupt {
520         spinlock_t lock;
521         struct kvm_s390_float_interrupt *float_int;
522         struct swait_queue_head *wq;
523         atomic_t *cpuflags;
524         DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
525         struct kvm_s390_irq_payload irq;
526         unsigned long pending_irqs;
527 };
528
529 #define FIRQ_LIST_IO_ISC_0 0
530 #define FIRQ_LIST_IO_ISC_1 1
531 #define FIRQ_LIST_IO_ISC_2 2
532 #define FIRQ_LIST_IO_ISC_3 3
533 #define FIRQ_LIST_IO_ISC_4 4
534 #define FIRQ_LIST_IO_ISC_5 5
535 #define FIRQ_LIST_IO_ISC_6 6
536 #define FIRQ_LIST_IO_ISC_7 7
537 #define FIRQ_LIST_PFAULT   8
538 #define FIRQ_LIST_VIRTIO   9
539 #define FIRQ_LIST_COUNT   10
540 #define FIRQ_CNTR_IO       0
541 #define FIRQ_CNTR_SERVICE  1
542 #define FIRQ_CNTR_VIRTIO   2
543 #define FIRQ_CNTR_PFAULT   3
544 #define FIRQ_MAX_COUNT     4
545
546 /* mask the AIS mode for a given ISC */
547 #define AIS_MODE_MASK(isc) (0x80 >> isc)
548
549 #define KVM_S390_AIS_MODE_ALL    0
550 #define KVM_S390_AIS_MODE_SINGLE 1
551
552 struct kvm_s390_float_interrupt {
553         unsigned long pending_irqs;
554         spinlock_t lock;
555         struct list_head lists[FIRQ_LIST_COUNT];
556         int counters[FIRQ_MAX_COUNT];
557         struct kvm_s390_mchk_info mchk;
558         struct kvm_s390_ext_info srv_signal;
559         int next_rr_cpu;
560         unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
561         struct mutex ais_lock;
562         u8 simm;
563         u8 nimm;
564 };
565
566 struct kvm_hw_wp_info_arch {
567         unsigned long addr;
568         unsigned long phys_addr;
569         int len;
570         char *old_data;
571 };
572
573 struct kvm_hw_bp_info_arch {
574         unsigned long addr;
575         int len;
576 };
577
578 /*
579  * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
580  * Further KVM_GUESTDBG flags which an be used from userspace can be found in
581  * arch/s390/include/uapi/asm/kvm.h
582  */
583 #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
584
585 #define guestdbg_enabled(vcpu) \
586                 (vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
587 #define guestdbg_sstep_enabled(vcpu) \
588                 (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
589 #define guestdbg_hw_bp_enabled(vcpu) \
590                 (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
591 #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
592                 (vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
593
594 struct kvm_guestdbg_info_arch {
595         unsigned long cr0;
596         unsigned long cr9;
597         unsigned long cr10;
598         unsigned long cr11;
599         struct kvm_hw_bp_info_arch *hw_bp_info;
600         struct kvm_hw_wp_info_arch *hw_wp_info;
601         int nr_hw_bp;
602         int nr_hw_wp;
603         unsigned long last_bp;
604 };
605
606 struct kvm_vcpu_arch {
607         struct kvm_s390_sie_block *sie_block;
608         /* if vsie is active, currently executed shadow sie control block */
609         struct kvm_s390_sie_block *vsie_block;
610         unsigned int      host_acrs[NUM_ACRS];
611         struct gs_cb      *host_gscb;
612         struct fpu        host_fpregs;
613         struct kvm_s390_local_interrupt local_int;
614         struct hrtimer    ckc_timer;
615         struct kvm_s390_pgm_info pgm;
616         struct gmap *gmap;
617         /* backup location for the currently enabled gmap when scheduled out */
618         struct gmap *enabled_gmap;
619         struct kvm_guestdbg_info_arch guestdbg;
620         unsigned long pfault_token;
621         unsigned long pfault_select;
622         unsigned long pfault_compare;
623         bool cputm_enabled;
624         /*
625          * The seqcount protects updates to cputm_start and sie_block.cputm,
626          * this way we can have non-blocking reads with consistent values.
627          * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
628          * values and to start/stop/enable/disable cpu timer accounting.
629          */
630         seqcount_t cputm_seqcount;
631         __u64 cputm_start;
632         bool gs_enabled;
633 };
634
635 struct kvm_vm_stat {
636         ulong remote_tlb_flush;
637 };
638
639 struct kvm_arch_memory_slot {
640 };
641
642 struct s390_map_info {
643         struct list_head list;
644         __u64 guest_addr;
645         __u64 addr;
646         struct page *page;
647 };
648
649 struct s390_io_adapter {
650         unsigned int id;
651         int isc;
652         bool maskable;
653         bool masked;
654         bool swap;
655         bool suppressible;
656         struct rw_semaphore maps_lock;
657         struct list_head maps;
658         atomic_t nr_maps;
659 };
660
661 #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
662 #define MAX_S390_ADAPTER_MAPS 256
663
664 /* maximum size of facilities and facility mask is 2k bytes */
665 #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
666 #define S390_ARCH_FAC_LIST_SIZE_U64 \
667         (S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
668 #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
669 #define S390_ARCH_FAC_MASK_SIZE_U64 \
670         (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
671
672 struct kvm_s390_cpu_model {
673         /* facility mask supported by kvm & hosting machine */
674         __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
675         /* facility list requested by guest (in dma page) */
676         __u64 *fac_list;
677         u64 cpuid;
678         unsigned short ibc;
679 };
680
681 struct kvm_s390_crypto {
682         struct kvm_s390_crypto_cb *crycb;
683         __u32 crycbd;
684         __u8 aes_kw;
685         __u8 dea_kw;
686 };
687
688 #define APCB0_MASK_SIZE 1
689 struct kvm_s390_apcb0 {
690         __u64 apm[APCB0_MASK_SIZE];             /* 0x0000 */
691         __u64 aqm[APCB0_MASK_SIZE];             /* 0x0008 */
692         __u64 adm[APCB0_MASK_SIZE];             /* 0x0010 */
693         __u64 reserved18;                       /* 0x0018 */
694 };
695
696 #define APCB1_MASK_SIZE 4
697 struct kvm_s390_apcb1 {
698         __u64 apm[APCB1_MASK_SIZE];             /* 0x0000 */
699         __u64 aqm[APCB1_MASK_SIZE];             /* 0x0020 */
700         __u64 adm[APCB1_MASK_SIZE];             /* 0x0040 */
701         __u64 reserved60[4];                    /* 0x0060 */
702 };
703
704 struct kvm_s390_crypto_cb {
705         struct kvm_s390_apcb0 apcb0;            /* 0x0000 */
706         __u8   reserved20[0x0048 - 0x0020];     /* 0x0020 */
707         __u8   dea_wrapping_key_mask[24];       /* 0x0048 */
708         __u8   aes_wrapping_key_mask[32];       /* 0x0060 */
709         struct kvm_s390_apcb1 apcb1;            /* 0x0080 */
710 };
711
712 /*
713  * sie_page2 has to be allocated as DMA because fac_list and crycb need
714  * 31bit addresses in the sie control block.
715  */
716 struct sie_page2 {
717         __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];    /* 0x0000 */
718         struct kvm_s390_crypto_cb crycb;                /* 0x0800 */
719         u8 reserved900[0x1000 - 0x900];                 /* 0x0900 */
720 };
721
722 struct kvm_s390_vsie {
723         struct mutex mutex;
724         struct radix_tree_root addr_to_page;
725         int page_count;
726         int next;
727         struct page *pages[KVM_MAX_VCPUS];
728 };
729
730 struct kvm_s390_migration_state {
731         unsigned long bitmap_size;      /* in bits (number of guest pages) */
732         atomic64_t dirty_pages;         /* number of dirty pages */
733         unsigned long *pgste_bitmap;
734 };
735
736 struct kvm_arch{
737         void *sca;
738         int use_esca;
739         rwlock_t sca_lock;
740         debug_info_t *dbf;
741         struct kvm_s390_float_interrupt float_int;
742         struct kvm_device *flic;
743         struct gmap *gmap;
744         unsigned long mem_limit;
745         int css_support;
746         int use_irqchip;
747         int use_cmma;
748         int user_cpu_state_ctrl;
749         int user_sigp;
750         int user_stsi;
751         int user_instr0;
752         struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
753         wait_queue_head_t ipte_wq;
754         int ipte_lock_count;
755         struct mutex ipte_mutex;
756         spinlock_t start_stop_lock;
757         struct sie_page2 *sie_page2;
758         struct kvm_s390_cpu_model model;
759         struct kvm_s390_crypto crypto;
760         struct kvm_s390_vsie vsie;
761         u8 epdx;
762         u64 epoch;
763         struct kvm_s390_migration_state *migration_state;
764         /* subset of available cpu features enabled by user space */
765         DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
766 };
767
768 #define KVM_HVA_ERR_BAD         (-1UL)
769 #define KVM_HVA_ERR_RO_BAD      (-2UL)
770
771 static inline bool kvm_is_error_hva(unsigned long addr)
772 {
773         return IS_ERR_VALUE(addr);
774 }
775
776 #define ASYNC_PF_PER_VCPU       64
777 struct kvm_arch_async_pf {
778         unsigned long pfault_token;
779 };
780
781 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
782
783 void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
784                                struct kvm_async_pf *work);
785
786 void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
787                                      struct kvm_async_pf *work);
788
789 void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
790                                  struct kvm_async_pf *work);
791
792 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
793 extern char sie_exit;
794
795 static inline void kvm_arch_hardware_disable(void) {}
796 static inline void kvm_arch_check_processor_compat(void *rtn) {}
797 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
798 static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
799 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
800 static inline void kvm_arch_free_memslot(struct kvm *kvm,
801                 struct kvm_memory_slot *free, struct kvm_memory_slot *dont) {}
802 static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
803 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
804 static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
805                 struct kvm_memory_slot *slot) {}
806 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
807 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
808
809 void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
810
811 #endif