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1  /* SPDX-License-Identifier: GPL-2.0 */
2  /*
3   * definition for kernel virtual machines on s390
4   *
5   * Copyright IBM Corp. 2008, 2018
6   *
7   *    Author(s): Carsten Otte <cotte@de.ibm.com>
8   */
9  
10  
11  #ifndef ASM_KVM_HOST_H
12  #define ASM_KVM_HOST_H
13  
14  #include <linux/types.h>
15  #include <linux/hrtimer.h>
16  #include <linux/interrupt.h>
17  #include <linux/kvm_types.h>
18  #include <linux/kvm_host.h>
19  #include <linux/kvm.h>
20  #include <linux/seqlock.h>
21  #include <linux/module.h>
22  #include <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  
32  /*
33   * These seem to be used for allocating ->chip in the routing table, which we
34   * don't use. 1 is as small as we can get to reduce the needed memory. If we
35   * need 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 1
39  #define KVM_HALT_POLL_NS_DEFAULT 50000
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  #define KVM_REQ_VSIE_RESTART	KVM_ARCH_REQ(5)
48  
49  #define SIGP_CTRL_C		0x80
50  #define SIGP_CTRL_SCN_MASK	0x3f
51  
52  union bsca_sigp_ctrl {
53  	__u8 value;
54  	struct {
55  		__u8 c : 1;
56  		__u8 r : 1;
57  		__u8 scn : 6;
58  	};
59  };
60  
61  union esca_sigp_ctrl {
62  	__u16 value;
63  	struct {
64  		__u8 c : 1;
65  		__u8 reserved: 7;
66  		__u8 scn;
67  	};
68  };
69  
70  struct esca_entry {
71  	union esca_sigp_ctrl sigp_ctrl;
72  	__u16   reserved1[3];
73  	__u64   sda;
74  	__u64   reserved2[6];
75  };
76  
77  struct bsca_entry {
78  	__u8	reserved0;
79  	union bsca_sigp_ctrl	sigp_ctrl;
80  	__u16	reserved[3];
81  	__u64	sda;
82  	__u64	reserved2[2];
83  };
84  
85  union ipte_control {
86  	unsigned long val;
87  	struct {
88  		unsigned long k  : 1;
89  		unsigned long kh : 31;
90  		unsigned long kg : 32;
91  	};
92  };
93  
94  struct bsca_block {
95  	union ipte_control ipte_control;
96  	__u64	reserved[5];
97  	__u64	mcn;
98  	__u64	reserved2;
99  	struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
100  };
101  
102  struct esca_block {
103  	union ipte_control ipte_control;
104  	__u64   reserved1[7];
105  	__u64   mcn[4];
106  	__u64   reserved2[20];
107  	struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
108  };
109  
110  /*
111   * This struct is used to store some machine check info from lowcore
112   * for machine checks that happen while the guest is running.
113   * This info in host's lowcore might be overwritten by a second machine
114   * check from host when host is in the machine check's high-level handling.
115   * The size is 24 bytes.
116   */
117  struct mcck_volatile_info {
118  	__u64 mcic;
119  	__u64 failing_storage_address;
120  	__u32 ext_damage_code;
121  	__u32 reserved;
122  };
123  
124  #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
125  			  CR0_MEASUREMENT_ALERT_SUBMASK)
126  #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
127  			   CR14_EXTERNAL_DAMAGE_SUBMASK)
128  
129  #define SIDAD_SIZE_MASK		0xff
130  #define sida_origin(sie_block) \
131  	((sie_block)->sidad & PAGE_MASK)
132  #define sida_size(sie_block) \
133  	((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE)
134  
135  #define CPUSTAT_STOPPED    0x80000000
136  #define CPUSTAT_WAIT       0x10000000
137  #define CPUSTAT_ECALL_PEND 0x08000000
138  #define CPUSTAT_STOP_INT   0x04000000
139  #define CPUSTAT_IO_INT     0x02000000
140  #define CPUSTAT_EXT_INT    0x01000000
141  #define CPUSTAT_RUNNING    0x00800000
142  #define CPUSTAT_RETAINED   0x00400000
143  #define CPUSTAT_TIMING_SUB 0x00020000
144  #define CPUSTAT_SIE_SUB    0x00010000
145  #define CPUSTAT_RRF        0x00008000
146  #define CPUSTAT_SLSV       0x00004000
147  #define CPUSTAT_SLSR       0x00002000
148  #define CPUSTAT_ZARCH      0x00000800
149  #define CPUSTAT_MCDS       0x00000100
150  #define CPUSTAT_KSS        0x00000200
151  #define CPUSTAT_SM         0x00000080
152  #define CPUSTAT_IBS        0x00000040
153  #define CPUSTAT_GED2       0x00000010
154  #define CPUSTAT_G          0x00000008
155  #define CPUSTAT_GED        0x00000004
156  #define CPUSTAT_J          0x00000002
157  #define CPUSTAT_P          0x00000001
158  
159  struct kvm_s390_sie_block {
160  	atomic_t cpuflags;		/* 0x0000 */
161  	__u32 : 1;			/* 0x0004 */
162  	__u32 prefix : 18;
163  	__u32 : 1;
164  	__u32 ibc : 12;
165  	__u8	reserved08[4];		/* 0x0008 */
166  #define PROG_IN_SIE (1<<0)
167  	__u32	prog0c;			/* 0x000c */
168  	union {
169  		__u8	reserved10[16];		/* 0x0010 */
170  		struct {
171  			__u64	pv_handle_cpu;
172  			__u64	pv_handle_config;
173  		};
174  	};
175  #define PROG_BLOCK_SIE	(1<<0)
176  #define PROG_REQUEST	(1<<1)
177  	atomic_t prog20;		/* 0x0020 */
178  	__u8	reserved24[4];		/* 0x0024 */
179  	__u64	cputm;			/* 0x0028 */
180  	__u64	ckc;			/* 0x0030 */
181  	__u64	epoch;			/* 0x0038 */
182  	__u32	svcc;			/* 0x0040 */
183  #define LCTL_CR0	0x8000
184  #define LCTL_CR6	0x0200
185  #define LCTL_CR9	0x0040
186  #define LCTL_CR10	0x0020
187  #define LCTL_CR11	0x0010
188  #define LCTL_CR14	0x0002
189  	__u16   lctl;			/* 0x0044 */
190  	__s16	icpua;			/* 0x0046 */
191  #define ICTL_OPEREXC	0x80000000
192  #define ICTL_PINT	0x20000000
193  #define ICTL_LPSW	0x00400000
194  #define ICTL_STCTL	0x00040000
195  #define ICTL_ISKE	0x00004000
196  #define ICTL_SSKE	0x00002000
197  #define ICTL_RRBE	0x00001000
198  #define ICTL_TPROT	0x00000200
199  	__u32	ictl;			/* 0x0048 */
200  #define ECA_CEI		0x80000000
201  #define ECA_IB		0x40000000
202  #define ECA_SIGPI	0x10000000
203  #define ECA_MVPGI	0x01000000
204  #define ECA_AIV		0x00200000
205  #define ECA_VX		0x00020000
206  #define ECA_PROTEXCI	0x00002000
207  #define ECA_APIE	0x00000008
208  #define ECA_SII		0x00000001
209  	__u32	eca;			/* 0x004c */
210  #define ICPT_INST	0x04
211  #define ICPT_PROGI	0x08
212  #define ICPT_INSTPROGI	0x0C
213  #define ICPT_EXTREQ	0x10
214  #define ICPT_EXTINT	0x14
215  #define ICPT_IOREQ	0x18
216  #define ICPT_WAIT	0x1c
217  #define ICPT_VALIDITY	0x20
218  #define ICPT_STOP	0x28
219  #define ICPT_OPEREXC	0x2C
220  #define ICPT_PARTEXEC	0x38
221  #define ICPT_IOINST	0x40
222  #define ICPT_KSS	0x5c
223  #define ICPT_MCHKREQ	0x60
224  #define ICPT_INT_ENABLE	0x64
225  #define ICPT_PV_INSTR	0x68
226  #define ICPT_PV_NOTIFY	0x6c
227  #define ICPT_PV_PREF	0x70
228  	__u8	icptcode;		/* 0x0050 */
229  	__u8	icptstatus;		/* 0x0051 */
230  	__u16	ihcpu;			/* 0x0052 */
231  	__u8	reserved54;		/* 0x0054 */
232  #define IICTL_CODE_NONE		 0x00
233  #define IICTL_CODE_MCHK		 0x01
234  #define IICTL_CODE_EXT		 0x02
235  #define IICTL_CODE_IO		 0x03
236  #define IICTL_CODE_RESTART	 0x04
237  #define IICTL_CODE_SPECIFICATION 0x10
238  #define IICTL_CODE_OPERAND	 0x11
239  	__u8	iictl;			/* 0x0055 */
240  	__u16	ipa;			/* 0x0056 */
241  	__u32	ipb;			/* 0x0058 */
242  	__u32	scaoh;			/* 0x005c */
243  #define FPF_BPBC 	0x20
244  	__u8	fpf;			/* 0x0060 */
245  #define ECB_GS		0x40
246  #define ECB_TE		0x10
247  #define ECB_SPECI	0x08
248  #define ECB_SRSI	0x04
249  #define ECB_HOSTPROTINT	0x02
250  	__u8	ecb;			/* 0x0061 */
251  #define ECB2_CMMA	0x80
252  #define ECB2_IEP	0x20
253  #define ECB2_PFMFI	0x08
254  #define ECB2_ESCA	0x04
255  	__u8    ecb2;                   /* 0x0062 */
256  #define ECB3_DEA 0x08
257  #define ECB3_AES 0x04
258  #define ECB3_RI  0x01
259  	__u8    ecb3;			/* 0x0063 */
260  	__u32	scaol;			/* 0x0064 */
261  	__u8	sdf;			/* 0x0068 */
262  	__u8    epdx;			/* 0x0069 */
263  	__u8	cpnc;			/* 0x006a */
264  	__u8	reserved6b;		/* 0x006b */
265  	__u32	todpr;			/* 0x006c */
266  #define GISA_FORMAT1 0x00000001
267  	__u32	gd;			/* 0x0070 */
268  	__u8	reserved74[12];		/* 0x0074 */
269  	__u64	mso;			/* 0x0080 */
270  	__u64	msl;			/* 0x0088 */
271  	psw_t	gpsw;			/* 0x0090 */
272  	__u64	gg14;			/* 0x00a0 */
273  	__u64	gg15;			/* 0x00a8 */
274  	__u8	reservedb0[8];		/* 0x00b0 */
275  #define HPID_KVM	0x4
276  #define HPID_VSIE	0x5
277  	__u8	hpid;			/* 0x00b8 */
278  	__u8	reservedb9[7];		/* 0x00b9 */
279  	union {
280  		struct {
281  			__u32	eiparams;	/* 0x00c0 */
282  			__u16	extcpuaddr;	/* 0x00c4 */
283  			__u16	eic;		/* 0x00c6 */
284  		};
285  		__u64	mcic;			/* 0x00c0 */
286  	} __packed;
287  	__u32	reservedc8;		/* 0x00c8 */
288  	union {
289  		struct {
290  			__u16	pgmilc;		/* 0x00cc */
291  			__u16	iprcc;		/* 0x00ce */
292  		};
293  		__u32	edc;			/* 0x00cc */
294  	} __packed;
295  	union {
296  		struct {
297  			__u32	dxc;		/* 0x00d0 */
298  			__u16	mcn;		/* 0x00d4 */
299  			__u8	perc;		/* 0x00d6 */
300  			__u8	peratmid;	/* 0x00d7 */
301  		};
302  		__u64	faddr;			/* 0x00d0 */
303  	} __packed;
304  	__u64	peraddr;		/* 0x00d8 */
305  	__u8	eai;			/* 0x00e0 */
306  	__u8	peraid;			/* 0x00e1 */
307  	__u8	oai;			/* 0x00e2 */
308  	__u8	armid;			/* 0x00e3 */
309  	__u8	reservede4[4];		/* 0x00e4 */
310  	union {
311  		__u64	tecmc;		/* 0x00e8 */
312  		struct {
313  			__u16	subchannel_id;	/* 0x00e8 */
314  			__u16	subchannel_nr;	/* 0x00ea */
315  			__u32	io_int_parm;	/* 0x00ec */
316  			__u32	io_int_word;	/* 0x00f0 */
317  		};
318  	} __packed;
319  	__u8	reservedf4[8];		/* 0x00f4 */
320  #define CRYCB_FORMAT_MASK 0x00000003
321  #define CRYCB_FORMAT0 0x00000000
322  #define CRYCB_FORMAT1 0x00000001
323  #define CRYCB_FORMAT2 0x00000003
324  	__u32	crycbd;			/* 0x00fc */
325  	__u64	gcr[16];		/* 0x0100 */
326  	union {
327  		__u64	gbea;		/* 0x0180 */
328  		__u64	sidad;
329  	};
330  	__u8    reserved188[8];		/* 0x0188 */
331  	__u64   sdnxo;			/* 0x0190 */
332  	__u8    reserved198[8];		/* 0x0198 */
333  	__u32	fac;			/* 0x01a0 */
334  	__u8	reserved1a4[20];	/* 0x01a4 */
335  	__u64	cbrlo;			/* 0x01b8 */
336  	__u8	reserved1c0[8];		/* 0x01c0 */
337  #define ECD_HOSTREGMGMT	0x20000000
338  #define ECD_MEF		0x08000000
339  #define ECD_ETOKENF	0x02000000
340  #define ECD_ECC		0x00200000
341  	__u32	ecd;			/* 0x01c8 */
342  	__u8	reserved1cc[18];	/* 0x01cc */
343  	__u64	pp;			/* 0x01de */
344  	__u8	reserved1e6[2];		/* 0x01e6 */
345  	__u64	itdba;			/* 0x01e8 */
346  	__u64   riccbd;			/* 0x01f0 */
347  	__u64	gvrd;			/* 0x01f8 */
348  } __packed __aligned(512);
349  
350  struct kvm_s390_itdb {
351  	__u8	data[256];
352  };
353  
354  struct sie_page {
355  	struct kvm_s390_sie_block sie_block;
356  	struct mcck_volatile_info mcck_info;	/* 0x0200 */
357  	__u8 reserved218[360];		/* 0x0218 */
358  	__u64 pv_grregs[16];		/* 0x0380 */
359  	__u8 reserved400[512];		/* 0x0400 */
360  	struct kvm_s390_itdb itdb;	/* 0x0600 */
361  	__u8 reserved700[2304];		/* 0x0700 */
362  };
363  
364  struct kvm_vcpu_stat {
365  	struct kvm_vcpu_stat_generic generic;
366  	u64 exit_userspace;
367  	u64 exit_null;
368  	u64 exit_external_request;
369  	u64 exit_io_request;
370  	u64 exit_external_interrupt;
371  	u64 exit_stop_request;
372  	u64 exit_validity;
373  	u64 exit_instruction;
374  	u64 exit_pei;
375  	u64 halt_no_poll_steal;
376  	u64 instruction_lctl;
377  	u64 instruction_lctlg;
378  	u64 instruction_stctl;
379  	u64 instruction_stctg;
380  	u64 exit_program_interruption;
381  	u64 exit_instr_and_program;
382  	u64 exit_operation_exception;
383  	u64 deliver_ckc;
384  	u64 deliver_cputm;
385  	u64 deliver_external_call;
386  	u64 deliver_emergency_signal;
387  	u64 deliver_service_signal;
388  	u64 deliver_virtio;
389  	u64 deliver_stop_signal;
390  	u64 deliver_prefix_signal;
391  	u64 deliver_restart_signal;
392  	u64 deliver_program;
393  	u64 deliver_io;
394  	u64 deliver_machine_check;
395  	u64 exit_wait_state;
396  	u64 inject_ckc;
397  	u64 inject_cputm;
398  	u64 inject_external_call;
399  	u64 inject_emergency_signal;
400  	u64 inject_mchk;
401  	u64 inject_pfault_init;
402  	u64 inject_program;
403  	u64 inject_restart;
404  	u64 inject_set_prefix;
405  	u64 inject_stop_signal;
406  	u64 instruction_epsw;
407  	u64 instruction_gs;
408  	u64 instruction_io_other;
409  	u64 instruction_lpsw;
410  	u64 instruction_lpswe;
411  	u64 instruction_pfmf;
412  	u64 instruction_ptff;
413  	u64 instruction_sck;
414  	u64 instruction_sckpf;
415  	u64 instruction_stidp;
416  	u64 instruction_spx;
417  	u64 instruction_stpx;
418  	u64 instruction_stap;
419  	u64 instruction_iske;
420  	u64 instruction_ri;
421  	u64 instruction_rrbe;
422  	u64 instruction_sske;
423  	u64 instruction_ipte_interlock;
424  	u64 instruction_stsi;
425  	u64 instruction_stfl;
426  	u64 instruction_tb;
427  	u64 instruction_tpi;
428  	u64 instruction_tprot;
429  	u64 instruction_tsch;
430  	u64 instruction_sie;
431  	u64 instruction_essa;
432  	u64 instruction_sthyi;
433  	u64 instruction_sigp_sense;
434  	u64 instruction_sigp_sense_running;
435  	u64 instruction_sigp_external_call;
436  	u64 instruction_sigp_emergency;
437  	u64 instruction_sigp_cond_emergency;
438  	u64 instruction_sigp_start;
439  	u64 instruction_sigp_stop;
440  	u64 instruction_sigp_stop_store_status;
441  	u64 instruction_sigp_store_status;
442  	u64 instruction_sigp_store_adtl_status;
443  	u64 instruction_sigp_arch;
444  	u64 instruction_sigp_prefix;
445  	u64 instruction_sigp_restart;
446  	u64 instruction_sigp_init_cpu_reset;
447  	u64 instruction_sigp_cpu_reset;
448  	u64 instruction_sigp_unknown;
449  	u64 instruction_diagnose_10;
450  	u64 instruction_diagnose_44;
451  	u64 instruction_diagnose_9c;
452  	u64 diag_9c_ignored;
453  	u64 diag_9c_forward;
454  	u64 instruction_diagnose_258;
455  	u64 instruction_diagnose_308;
456  	u64 instruction_diagnose_500;
457  	u64 instruction_diagnose_other;
458  	u64 pfault_sync;
459  };
460  
461  #define PGM_OPERATION			0x01
462  #define PGM_PRIVILEGED_OP		0x02
463  #define PGM_EXECUTE			0x03
464  #define PGM_PROTECTION			0x04
465  #define PGM_ADDRESSING			0x05
466  #define PGM_SPECIFICATION		0x06
467  #define PGM_DATA			0x07
468  #define PGM_FIXED_POINT_OVERFLOW	0x08
469  #define PGM_FIXED_POINT_DIVIDE		0x09
470  #define PGM_DECIMAL_OVERFLOW		0x0a
471  #define PGM_DECIMAL_DIVIDE		0x0b
472  #define PGM_HFP_EXPONENT_OVERFLOW	0x0c
473  #define PGM_HFP_EXPONENT_UNDERFLOW	0x0d
474  #define PGM_HFP_SIGNIFICANCE		0x0e
475  #define PGM_HFP_DIVIDE			0x0f
476  #define PGM_SEGMENT_TRANSLATION		0x10
477  #define PGM_PAGE_TRANSLATION		0x11
478  #define PGM_TRANSLATION_SPEC		0x12
479  #define PGM_SPECIAL_OPERATION		0x13
480  #define PGM_OPERAND			0x15
481  #define PGM_TRACE_TABEL			0x16
482  #define PGM_VECTOR_PROCESSING		0x1b
483  #define PGM_SPACE_SWITCH		0x1c
484  #define PGM_HFP_SQUARE_ROOT		0x1d
485  #define PGM_PC_TRANSLATION_SPEC		0x1f
486  #define PGM_AFX_TRANSLATION		0x20
487  #define PGM_ASX_TRANSLATION		0x21
488  #define PGM_LX_TRANSLATION		0x22
489  #define PGM_EX_TRANSLATION		0x23
490  #define PGM_PRIMARY_AUTHORITY		0x24
491  #define PGM_SECONDARY_AUTHORITY		0x25
492  #define PGM_LFX_TRANSLATION		0x26
493  #define PGM_LSX_TRANSLATION		0x27
494  #define PGM_ALET_SPECIFICATION		0x28
495  #define PGM_ALEN_TRANSLATION		0x29
496  #define PGM_ALE_SEQUENCE		0x2a
497  #define PGM_ASTE_VALIDITY		0x2b
498  #define PGM_ASTE_SEQUENCE		0x2c
499  #define PGM_EXTENDED_AUTHORITY		0x2d
500  #define PGM_LSTE_SEQUENCE		0x2e
501  #define PGM_ASTE_INSTANCE		0x2f
502  #define PGM_STACK_FULL			0x30
503  #define PGM_STACK_EMPTY			0x31
504  #define PGM_STACK_SPECIFICATION		0x32
505  #define PGM_STACK_TYPE			0x33
506  #define PGM_STACK_OPERATION		0x34
507  #define PGM_ASCE_TYPE			0x38
508  #define PGM_REGION_FIRST_TRANS		0x39
509  #define PGM_REGION_SECOND_TRANS		0x3a
510  #define PGM_REGION_THIRD_TRANS		0x3b
511  #define PGM_MONITOR			0x40
512  #define PGM_PER				0x80
513  #define PGM_CRYPTO_OPERATION		0x119
514  
515  /* irq types in ascend order of priorities */
516  enum irq_types {
517  	IRQ_PEND_SET_PREFIX = 0,
518  	IRQ_PEND_RESTART,
519  	IRQ_PEND_SIGP_STOP,
520  	IRQ_PEND_IO_ISC_7,
521  	IRQ_PEND_IO_ISC_6,
522  	IRQ_PEND_IO_ISC_5,
523  	IRQ_PEND_IO_ISC_4,
524  	IRQ_PEND_IO_ISC_3,
525  	IRQ_PEND_IO_ISC_2,
526  	IRQ_PEND_IO_ISC_1,
527  	IRQ_PEND_IO_ISC_0,
528  	IRQ_PEND_VIRTIO,
529  	IRQ_PEND_PFAULT_DONE,
530  	IRQ_PEND_PFAULT_INIT,
531  	IRQ_PEND_EXT_HOST,
532  	IRQ_PEND_EXT_SERVICE,
533  	IRQ_PEND_EXT_SERVICE_EV,
534  	IRQ_PEND_EXT_TIMING,
535  	IRQ_PEND_EXT_CPU_TIMER,
536  	IRQ_PEND_EXT_CLOCK_COMP,
537  	IRQ_PEND_EXT_EXTERNAL,
538  	IRQ_PEND_EXT_EMERGENCY,
539  	IRQ_PEND_EXT_MALFUNC,
540  	IRQ_PEND_EXT_IRQ_KEY,
541  	IRQ_PEND_MCHK_REP,
542  	IRQ_PEND_PROG,
543  	IRQ_PEND_SVC,
544  	IRQ_PEND_MCHK_EX,
545  	IRQ_PEND_COUNT
546  };
547  
548  /* We have 2M for virtio device descriptor pages. Smallest amount of
549   * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
550   */
551  #define KVM_S390_MAX_VIRTIO_IRQS 87381
552  
553  /*
554   * Repressible (non-floating) machine check interrupts
555   * subclass bits in MCIC
556   */
557  #define MCHK_EXTD_BIT 58
558  #define MCHK_DEGR_BIT 56
559  #define MCHK_WARN_BIT 55
560  #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
561  		       (1UL << MCHK_EXTD_BIT) | \
562  		       (1UL << MCHK_WARN_BIT))
563  
564  /* Exigent machine check interrupts subclass bits in MCIC */
565  #define MCHK_SD_BIT 63
566  #define MCHK_PD_BIT 62
567  #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
568  
569  #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
570  			   (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
571  			   (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
572  			   (1UL << IRQ_PEND_EXT_MALFUNC)    | \
573  			   (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
574  			   (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
575  			   (1UL << IRQ_PEND_EXT_TIMING)     | \
576  			   (1UL << IRQ_PEND_EXT_HOST)       | \
577  			   (1UL << IRQ_PEND_EXT_SERVICE)    | \
578  			   (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
579  			   (1UL << IRQ_PEND_VIRTIO)         | \
580  			   (1UL << IRQ_PEND_PFAULT_INIT)    | \
581  			   (1UL << IRQ_PEND_PFAULT_DONE))
582  
583  #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
584  			  (1UL << IRQ_PEND_IO_ISC_1) | \
585  			  (1UL << IRQ_PEND_IO_ISC_2) | \
586  			  (1UL << IRQ_PEND_IO_ISC_3) | \
587  			  (1UL << IRQ_PEND_IO_ISC_4) | \
588  			  (1UL << IRQ_PEND_IO_ISC_5) | \
589  			  (1UL << IRQ_PEND_IO_ISC_6) | \
590  			  (1UL << IRQ_PEND_IO_ISC_7))
591  
592  #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
593  			    (1UL << IRQ_PEND_MCHK_EX))
594  
595  #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
596  			      (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
597  			      (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
598  			      (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
599  			      (1UL << IRQ_PEND_EXT_SERVICE)    | \
600  			      (1UL << IRQ_PEND_EXT_SERVICE_EV))
601  
602  struct kvm_s390_interrupt_info {
603  	struct list_head list;
604  	u64	type;
605  	union {
606  		struct kvm_s390_io_info io;
607  		struct kvm_s390_ext_info ext;
608  		struct kvm_s390_pgm_info pgm;
609  		struct kvm_s390_emerg_info emerg;
610  		struct kvm_s390_extcall_info extcall;
611  		struct kvm_s390_prefix_info prefix;
612  		struct kvm_s390_stop_info stop;
613  		struct kvm_s390_mchk_info mchk;
614  	};
615  };
616  
617  struct kvm_s390_irq_payload {
618  	struct kvm_s390_io_info io;
619  	struct kvm_s390_ext_info ext;
620  	struct kvm_s390_pgm_info pgm;
621  	struct kvm_s390_emerg_info emerg;
622  	struct kvm_s390_extcall_info extcall;
623  	struct kvm_s390_prefix_info prefix;
624  	struct kvm_s390_stop_info stop;
625  	struct kvm_s390_mchk_info mchk;
626  };
627  
628  struct kvm_s390_local_interrupt {
629  	spinlock_t lock;
630  	DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
631  	struct kvm_s390_irq_payload irq;
632  	unsigned long pending_irqs;
633  };
634  
635  #define FIRQ_LIST_IO_ISC_0 0
636  #define FIRQ_LIST_IO_ISC_1 1
637  #define FIRQ_LIST_IO_ISC_2 2
638  #define FIRQ_LIST_IO_ISC_3 3
639  #define FIRQ_LIST_IO_ISC_4 4
640  #define FIRQ_LIST_IO_ISC_5 5
641  #define FIRQ_LIST_IO_ISC_6 6
642  #define FIRQ_LIST_IO_ISC_7 7
643  #define FIRQ_LIST_PFAULT   8
644  #define FIRQ_LIST_VIRTIO   9
645  #define FIRQ_LIST_COUNT   10
646  #define FIRQ_CNTR_IO       0
647  #define FIRQ_CNTR_SERVICE  1
648  #define FIRQ_CNTR_VIRTIO   2
649  #define FIRQ_CNTR_PFAULT   3
650  #define FIRQ_MAX_COUNT     4
651  
652  /* mask the AIS mode for a given ISC */
653  #define AIS_MODE_MASK(isc) (0x80 >> isc)
654  
655  #define KVM_S390_AIS_MODE_ALL    0
656  #define KVM_S390_AIS_MODE_SINGLE 1
657  
658  struct kvm_s390_float_interrupt {
659  	unsigned long pending_irqs;
660  	unsigned long masked_irqs;
661  	spinlock_t lock;
662  	struct list_head lists[FIRQ_LIST_COUNT];
663  	int counters[FIRQ_MAX_COUNT];
664  	struct kvm_s390_mchk_info mchk;
665  	struct kvm_s390_ext_info srv_signal;
666  	int next_rr_cpu;
667  	struct mutex ais_lock;
668  	u8 simm;
669  	u8 nimm;
670  };
671  
672  struct kvm_hw_wp_info_arch {
673  	unsigned long addr;
674  	unsigned long phys_addr;
675  	int len;
676  	char *old_data;
677  };
678  
679  struct kvm_hw_bp_info_arch {
680  	unsigned long addr;
681  	int len;
682  };
683  
684  /*
685   * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
686   * Further KVM_GUESTDBG flags which an be used from userspace can be found in
687   * arch/s390/include/uapi/asm/kvm.h
688   */
689  #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
690  
691  #define guestdbg_enabled(vcpu) \
692  		(vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
693  #define guestdbg_sstep_enabled(vcpu) \
694  		(vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
695  #define guestdbg_hw_bp_enabled(vcpu) \
696  		(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
697  #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
698  		(vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
699  
700  #define KVM_GUESTDBG_VALID_MASK \
701  		(KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\
702  		KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING)
703  
704  struct kvm_guestdbg_info_arch {
705  	unsigned long cr0;
706  	unsigned long cr9;
707  	unsigned long cr10;
708  	unsigned long cr11;
709  	struct kvm_hw_bp_info_arch *hw_bp_info;
710  	struct kvm_hw_wp_info_arch *hw_wp_info;
711  	int nr_hw_bp;
712  	int nr_hw_wp;
713  	unsigned long last_bp;
714  };
715  
716  struct kvm_s390_pv_vcpu {
717  	u64 handle;
718  	unsigned long stor_base;
719  };
720  
721  struct kvm_vcpu_arch {
722  	struct kvm_s390_sie_block *sie_block;
723  	/* if vsie is active, currently executed shadow sie control block */
724  	struct kvm_s390_sie_block *vsie_block;
725  	unsigned int      host_acrs[NUM_ACRS];
726  	struct gs_cb      *host_gscb;
727  	struct fpu	  host_fpregs;
728  	struct kvm_s390_local_interrupt local_int;
729  	struct hrtimer    ckc_timer;
730  	struct kvm_s390_pgm_info pgm;
731  	struct gmap *gmap;
732  	/* backup location for the currently enabled gmap when scheduled out */
733  	struct gmap *enabled_gmap;
734  	struct kvm_guestdbg_info_arch guestdbg;
735  	unsigned long pfault_token;
736  	unsigned long pfault_select;
737  	unsigned long pfault_compare;
738  	bool cputm_enabled;
739  	/*
740  	 * The seqcount protects updates to cputm_start and sie_block.cputm,
741  	 * this way we can have non-blocking reads with consistent values.
742  	 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
743  	 * values and to start/stop/enable/disable cpu timer accounting.
744  	 */
745  	seqcount_t cputm_seqcount;
746  	__u64 cputm_start;
747  	bool gs_enabled;
748  	bool skey_enabled;
749  	struct kvm_s390_pv_vcpu pv;
750  	union diag318_info diag318_info;
751  };
752  
753  struct kvm_vm_stat {
754  	struct kvm_vm_stat_generic generic;
755  	u64 inject_io;
756  	u64 inject_float_mchk;
757  	u64 inject_pfault_done;
758  	u64 inject_service_signal;
759  	u64 inject_virtio;
760  };
761  
762  struct kvm_arch_memory_slot {
763  };
764  
765  struct s390_map_info {
766  	struct list_head list;
767  	__u64 guest_addr;
768  	__u64 addr;
769  	struct page *page;
770  };
771  
772  struct s390_io_adapter {
773  	unsigned int id;
774  	int isc;
775  	bool maskable;
776  	bool masked;
777  	bool swap;
778  	bool suppressible;
779  };
780  
781  #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
782  #define MAX_S390_ADAPTER_MAPS 256
783  
784  /* maximum size of facilities and facility mask is 2k bytes */
785  #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
786  #define S390_ARCH_FAC_LIST_SIZE_U64 \
787  	(S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
788  #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
789  #define S390_ARCH_FAC_MASK_SIZE_U64 \
790  	(S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
791  
792  struct kvm_s390_cpu_model {
793  	/* facility mask supported by kvm & hosting machine */
794  	__u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
795  	struct kvm_s390_vm_cpu_subfunc subfuncs;
796  	/* facility list requested by guest (in dma page) */
797  	__u64 *fac_list;
798  	u64 cpuid;
799  	unsigned short ibc;
800  };
801  
802  typedef int (*crypto_hook)(struct kvm_vcpu *vcpu);
803  
804  struct kvm_s390_crypto {
805  	struct kvm_s390_crypto_cb *crycb;
806  	struct rw_semaphore pqap_hook_rwsem;
807  	crypto_hook *pqap_hook;
808  	__u32 crycbd;
809  	__u8 aes_kw;
810  	__u8 dea_kw;
811  	__u8 apie;
812  };
813  
814  #define APCB0_MASK_SIZE 1
815  struct kvm_s390_apcb0 {
816  	__u64 apm[APCB0_MASK_SIZE];		/* 0x0000 */
817  	__u64 aqm[APCB0_MASK_SIZE];		/* 0x0008 */
818  	__u64 adm[APCB0_MASK_SIZE];		/* 0x0010 */
819  	__u64 reserved18;			/* 0x0018 */
820  };
821  
822  #define APCB1_MASK_SIZE 4
823  struct kvm_s390_apcb1 {
824  	__u64 apm[APCB1_MASK_SIZE];		/* 0x0000 */
825  	__u64 aqm[APCB1_MASK_SIZE];		/* 0x0020 */
826  	__u64 adm[APCB1_MASK_SIZE];		/* 0x0040 */
827  	__u64 reserved60[4];			/* 0x0060 */
828  };
829  
830  struct kvm_s390_crypto_cb {
831  	struct kvm_s390_apcb0 apcb0;		/* 0x0000 */
832  	__u8   reserved20[0x0048 - 0x0020];	/* 0x0020 */
833  	__u8   dea_wrapping_key_mask[24];	/* 0x0048 */
834  	__u8   aes_wrapping_key_mask[32];	/* 0x0060 */
835  	struct kvm_s390_apcb1 apcb1;		/* 0x0080 */
836  };
837  
838  struct kvm_s390_gisa {
839  	union {
840  		struct { /* common to all formats */
841  			u32 next_alert;
842  			u8  ipm;
843  			u8  reserved01[2];
844  			u8  iam;
845  		};
846  		struct { /* format 0 */
847  			u32 next_alert;
848  			u8  ipm;
849  			u8  reserved01;
850  			u8  : 6;
851  			u8  g : 1;
852  			u8  c : 1;
853  			u8  iam;
854  			u8  reserved02[4];
855  			u32 airq_count;
856  		} g0;
857  		struct { /* format 1 */
858  			u32 next_alert;
859  			u8  ipm;
860  			u8  simm;
861  			u8  nimm;
862  			u8  iam;
863  			u8  aism[8];
864  			u8  : 6;
865  			u8  g : 1;
866  			u8  c : 1;
867  			u8  reserved03[11];
868  			u32 airq_count;
869  		} g1;
870  		struct {
871  			u64 word[4];
872  		} u64;
873  	};
874  };
875  
876  struct kvm_s390_gib {
877  	u32 alert_list_origin;
878  	u32 reserved01;
879  	u8:5;
880  	u8  nisc:3;
881  	u8  reserved03[3];
882  	u32 reserved04[5];
883  };
884  
885  /*
886   * sie_page2 has to be allocated as DMA because fac_list, crycb and
887   * gisa need 31bit addresses in the sie control block.
888   */
889  struct sie_page2 {
890  	__u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];	/* 0x0000 */
891  	struct kvm_s390_crypto_cb crycb;		/* 0x0800 */
892  	struct kvm_s390_gisa gisa;			/* 0x0900 */
893  	struct kvm *kvm;				/* 0x0920 */
894  	u8 reserved928[0x1000 - 0x928];			/* 0x0928 */
895  };
896  
897  struct kvm_s390_vsie {
898  	struct mutex mutex;
899  	struct radix_tree_root addr_to_page;
900  	int page_count;
901  	int next;
902  	struct page *pages[KVM_MAX_VCPUS];
903  };
904  
905  struct kvm_s390_gisa_iam {
906  	u8 mask;
907  	spinlock_t ref_lock;
908  	u32 ref_count[MAX_ISC + 1];
909  };
910  
911  struct kvm_s390_gisa_interrupt {
912  	struct kvm_s390_gisa *origin;
913  	struct kvm_s390_gisa_iam alert;
914  	struct hrtimer timer;
915  	u64 expires;
916  	DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
917  };
918  
919  struct kvm_s390_pv {
920  	u64 handle;
921  	u64 guest_len;
922  	unsigned long stor_base;
923  	void *stor_var;
924  };
925  
926  struct kvm_arch{
927  	void *sca;
928  	int use_esca;
929  	rwlock_t sca_lock;
930  	debug_info_t *dbf;
931  	struct kvm_s390_float_interrupt float_int;
932  	struct kvm_device *flic;
933  	struct gmap *gmap;
934  	unsigned long mem_limit;
935  	int css_support;
936  	int use_irqchip;
937  	int use_cmma;
938  	int use_pfmfi;
939  	int use_skf;
940  	int user_cpu_state_ctrl;
941  	int user_sigp;
942  	int user_stsi;
943  	int user_instr0;
944  	struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
945  	wait_queue_head_t ipte_wq;
946  	int ipte_lock_count;
947  	struct mutex ipte_mutex;
948  	spinlock_t start_stop_lock;
949  	struct sie_page2 *sie_page2;
950  	struct kvm_s390_cpu_model model;
951  	struct kvm_s390_crypto crypto;
952  	struct kvm_s390_vsie vsie;
953  	u8 epdx;
954  	u64 epoch;
955  	int migration_mode;
956  	atomic64_t cmma_dirty_pages;
957  	/* subset of available cpu features enabled by user space */
958  	DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
959  	/* indexed by vcpu_idx */
960  	DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
961  	struct kvm_s390_gisa_interrupt gisa_int;
962  	struct kvm_s390_pv pv;
963  };
964  
965  #define KVM_HVA_ERR_BAD		(-1UL)
966  #define KVM_HVA_ERR_RO_BAD	(-2UL)
967  
kvm_is_error_hva(unsigned long addr)968  static inline bool kvm_is_error_hva(unsigned long addr)
969  {
970  	return IS_ERR_VALUE(addr);
971  }
972  
973  #define ASYNC_PF_PER_VCPU	64
974  struct kvm_arch_async_pf {
975  	unsigned long pfault_token;
976  };
977  
978  bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
979  
980  void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
981  			       struct kvm_async_pf *work);
982  
983  bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
984  				     struct kvm_async_pf *work);
985  
986  void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
987  				 struct kvm_async_pf *work);
988  
kvm_arch_async_page_present_queued(struct kvm_vcpu * vcpu)989  static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
990  
991  void kvm_arch_crypto_clear_masks(struct kvm *kvm);
992  void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
993  			       unsigned long *aqm, unsigned long *adm);
994  
995  extern int sie64a(struct kvm_s390_sie_block *, u64 *);
996  extern char sie_exit;
997  
998  extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
999  extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
1000  
kvm_arch_hardware_disable(void)1001  static inline void kvm_arch_hardware_disable(void) {}
kvm_arch_sync_events(struct kvm * kvm)1002  static inline void kvm_arch_sync_events(struct kvm *kvm) {}
kvm_arch_sched_in(struct kvm_vcpu * vcpu,int cpu)1003  static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
kvm_arch_free_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)1004  static inline void kvm_arch_free_memslot(struct kvm *kvm,
1005  					 struct kvm_memory_slot *slot) {}
kvm_arch_memslots_updated(struct kvm * kvm,u64 gen)1006  static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
kvm_arch_flush_shadow_all(struct kvm * kvm)1007  static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
kvm_arch_flush_shadow_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)1008  static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
1009  		struct kvm_memory_slot *slot) {}
kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)1010  static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)1011  static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
1012  
1013  void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu);
1014  
1015  #endif
1016