xref: /openbmc/linux/arch/s390/include/asm/kvm_host.h (revision ee1cd5048959de496cd005c50b137212a5b62062)
1  /* SPDX-License-Identifier: GPL-2.0 */
2  /*
3   * definition for kernel virtual machines on s390
4   *
5   * Copyright IBM Corp. 2008, 2018
6   *
7   *    Author(s): Carsten Otte <cotte@de.ibm.com>
8   */
9  
10  
11  #ifndef ASM_KVM_HOST_H
12  #define ASM_KVM_HOST_H
13  
14  #include <linux/types.h>
15  #include <linux/hrtimer.h>
16  #include <linux/interrupt.h>
17  #include <linux/kvm_types.h>
18  #include <linux/kvm_host.h>
19  #include <linux/kvm.h>
20  #include <linux/seqlock.h>
21  #include <linux/module.h>
22  #include <linux/pci.h>
23  #include <linux/mmu_notifier.h>
24  #include <asm/debug.h>
25  #include <asm/cpu.h>
26  #include <asm/fpu/api.h>
27  #include <asm/isc.h>
28  #include <asm/guarded_storage.h>
29  
30  #define KVM_S390_BSCA_CPU_SLOTS 64
31  #define KVM_S390_ESCA_CPU_SLOTS 248
32  #define KVM_MAX_VCPUS 255
33  
34  /*
35   * These seem to be used for allocating ->chip in the routing table, which we
36   * don't use. 1 is as small as we can get to reduce the needed memory. If we
37   * need to look at ->chip later on, we'll need to revisit this.
38   */
39  #define KVM_NR_IRQCHIPS 1
40  #define KVM_IRQCHIP_NUM_PINS 1
41  #define KVM_HALT_POLL_NS_DEFAULT 50000
42  
43  /* s390-specific vcpu->requests bit members */
44  #define KVM_REQ_ENABLE_IBS	KVM_ARCH_REQ(0)
45  #define KVM_REQ_DISABLE_IBS	KVM_ARCH_REQ(1)
46  #define KVM_REQ_ICPT_OPEREXC	KVM_ARCH_REQ(2)
47  #define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
48  #define KVM_REQ_STOP_MIGRATION  KVM_ARCH_REQ(4)
49  #define KVM_REQ_VSIE_RESTART	KVM_ARCH_REQ(5)
50  #define KVM_REQ_REFRESH_GUEST_PREFIX	\
51  	KVM_ARCH_REQ_FLAGS(6, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
52  
53  #define SIGP_CTRL_C		0x80
54  #define SIGP_CTRL_SCN_MASK	0x3f
55  
56  union bsca_sigp_ctrl {
57  	__u8 value;
58  	struct {
59  		__u8 c : 1;
60  		__u8 r : 1;
61  		__u8 scn : 6;
62  	};
63  };
64  
65  union esca_sigp_ctrl {
66  	__u16 value;
67  	struct {
68  		__u8 c : 1;
69  		__u8 reserved: 7;
70  		__u8 scn;
71  	};
72  };
73  
74  struct esca_entry {
75  	union esca_sigp_ctrl sigp_ctrl;
76  	__u16   reserved1[3];
77  	__u64   sda;
78  	__u64   reserved2[6];
79  };
80  
81  struct bsca_entry {
82  	__u8	reserved0;
83  	union bsca_sigp_ctrl	sigp_ctrl;
84  	__u16	reserved[3];
85  	__u64	sda;
86  	__u64	reserved2[2];
87  };
88  
89  union ipte_control {
90  	unsigned long val;
91  	struct {
92  		unsigned long k  : 1;
93  		unsigned long kh : 31;
94  		unsigned long kg : 32;
95  	};
96  };
97  
98  union sca_utility {
99  	__u16 val;
100  	struct {
101  		__u16 mtcr : 1;
102  		__u16 reserved : 15;
103  	};
104  };
105  
106  struct bsca_block {
107  	union ipte_control ipte_control;
108  	__u64	reserved[5];
109  	__u64	mcn;
110  	union sca_utility utility;
111  	__u8	reserved2[6];
112  	struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
113  };
114  
115  struct esca_block {
116  	union ipte_control ipte_control;
117  	__u64   reserved1[6];
118  	union sca_utility utility;
119  	__u8	reserved2[6];
120  	__u64   mcn[4];
121  	__u64   reserved3[20];
122  	struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
123  };
124  
125  /*
126   * This struct is used to store some machine check info from lowcore
127   * for machine checks that happen while the guest is running.
128   * This info in host's lowcore might be overwritten by a second machine
129   * check from host when host is in the machine check's high-level handling.
130   * The size is 24 bytes.
131   */
132  struct mcck_volatile_info {
133  	__u64 mcic;
134  	__u64 failing_storage_address;
135  	__u32 ext_damage_code;
136  	__u32 reserved;
137  };
138  
139  #define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
140  			  CR0_MEASUREMENT_ALERT_SUBMASK)
141  #define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
142  			   CR14_EXTERNAL_DAMAGE_SUBMASK)
143  
144  #define SIDAD_SIZE_MASK		0xff
145  #define sida_addr(sie_block) phys_to_virt((sie_block)->sidad & PAGE_MASK)
146  #define sida_size(sie_block) \
147  	((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE)
148  
149  #define CPUSTAT_STOPPED    0x80000000
150  #define CPUSTAT_WAIT       0x10000000
151  #define CPUSTAT_ECALL_PEND 0x08000000
152  #define CPUSTAT_STOP_INT   0x04000000
153  #define CPUSTAT_IO_INT     0x02000000
154  #define CPUSTAT_EXT_INT    0x01000000
155  #define CPUSTAT_RUNNING    0x00800000
156  #define CPUSTAT_RETAINED   0x00400000
157  #define CPUSTAT_TIMING_SUB 0x00020000
158  #define CPUSTAT_SIE_SUB    0x00010000
159  #define CPUSTAT_RRF        0x00008000
160  #define CPUSTAT_SLSV       0x00004000
161  #define CPUSTAT_SLSR       0x00002000
162  #define CPUSTAT_ZARCH      0x00000800
163  #define CPUSTAT_MCDS       0x00000100
164  #define CPUSTAT_KSS        0x00000200
165  #define CPUSTAT_SM         0x00000080
166  #define CPUSTAT_IBS        0x00000040
167  #define CPUSTAT_GED2       0x00000010
168  #define CPUSTAT_G          0x00000008
169  #define CPUSTAT_GED        0x00000004
170  #define CPUSTAT_J          0x00000002
171  #define CPUSTAT_P          0x00000001
172  
173  struct kvm_s390_sie_block {
174  	atomic_t cpuflags;		/* 0x0000 */
175  	__u32 : 1;			/* 0x0004 */
176  	__u32 prefix : 18;
177  	__u32 : 1;
178  	__u32 ibc : 12;
179  	__u8	reserved08[4];		/* 0x0008 */
180  #define PROG_IN_SIE (1<<0)
181  	__u32	prog0c;			/* 0x000c */
182  	union {
183  		__u8	reserved10[16];		/* 0x0010 */
184  		struct {
185  			__u64	pv_handle_cpu;
186  			__u64	pv_handle_config;
187  		};
188  	};
189  #define PROG_BLOCK_SIE	(1<<0)
190  #define PROG_REQUEST	(1<<1)
191  	atomic_t prog20;		/* 0x0020 */
192  	__u8	reserved24[4];		/* 0x0024 */
193  	__u64	cputm;			/* 0x0028 */
194  	__u64	ckc;			/* 0x0030 */
195  	__u64	epoch;			/* 0x0038 */
196  	__u32	svcc;			/* 0x0040 */
197  #define LCTL_CR0	0x8000
198  #define LCTL_CR6	0x0200
199  #define LCTL_CR9	0x0040
200  #define LCTL_CR10	0x0020
201  #define LCTL_CR11	0x0010
202  #define LCTL_CR14	0x0002
203  	__u16   lctl;			/* 0x0044 */
204  	__s16	icpua;			/* 0x0046 */
205  #define ICTL_OPEREXC	0x80000000
206  #define ICTL_PINT	0x20000000
207  #define ICTL_LPSW	0x00400000
208  #define ICTL_STCTL	0x00040000
209  #define ICTL_ISKE	0x00004000
210  #define ICTL_SSKE	0x00002000
211  #define ICTL_RRBE	0x00001000
212  #define ICTL_TPROT	0x00000200
213  	__u32	ictl;			/* 0x0048 */
214  #define ECA_CEI		0x80000000
215  #define ECA_IB		0x40000000
216  #define ECA_SIGPI	0x10000000
217  #define ECA_MVPGI	0x01000000
218  #define ECA_AIV		0x00200000
219  #define ECA_VX		0x00020000
220  #define ECA_PROTEXCI	0x00002000
221  #define ECA_APIE	0x00000008
222  #define ECA_SII		0x00000001
223  	__u32	eca;			/* 0x004c */
224  #define ICPT_INST	0x04
225  #define ICPT_PROGI	0x08
226  #define ICPT_INSTPROGI	0x0C
227  #define ICPT_EXTREQ	0x10
228  #define ICPT_EXTINT	0x14
229  #define ICPT_IOREQ	0x18
230  #define ICPT_WAIT	0x1c
231  #define ICPT_VALIDITY	0x20
232  #define ICPT_STOP	0x28
233  #define ICPT_OPEREXC	0x2C
234  #define ICPT_PARTEXEC	0x38
235  #define ICPT_IOINST	0x40
236  #define ICPT_KSS	0x5c
237  #define ICPT_MCHKREQ	0x60
238  #define ICPT_INT_ENABLE	0x64
239  #define ICPT_PV_INSTR	0x68
240  #define ICPT_PV_NOTIFY	0x6c
241  #define ICPT_PV_PREF	0x70
242  	__u8	icptcode;		/* 0x0050 */
243  	__u8	icptstatus;		/* 0x0051 */
244  	__u16	ihcpu;			/* 0x0052 */
245  	__u8	reserved54;		/* 0x0054 */
246  #define IICTL_CODE_NONE		 0x00
247  #define IICTL_CODE_MCHK		 0x01
248  #define IICTL_CODE_EXT		 0x02
249  #define IICTL_CODE_IO		 0x03
250  #define IICTL_CODE_RESTART	 0x04
251  #define IICTL_CODE_SPECIFICATION 0x10
252  #define IICTL_CODE_OPERAND	 0x11
253  	__u8	iictl;			/* 0x0055 */
254  	__u16	ipa;			/* 0x0056 */
255  	__u32	ipb;			/* 0x0058 */
256  	__u32	scaoh;			/* 0x005c */
257  #define FPF_BPBC 	0x20
258  	__u8	fpf;			/* 0x0060 */
259  #define ECB_GS		0x40
260  #define ECB_TE		0x10
261  #define ECB_SPECI	0x08
262  #define ECB_SRSI	0x04
263  #define ECB_HOSTPROTINT	0x02
264  #define ECB_PTF		0x01
265  	__u8	ecb;			/* 0x0061 */
266  #define ECB2_CMMA	0x80
267  #define ECB2_IEP	0x20
268  #define ECB2_PFMFI	0x08
269  #define ECB2_ESCA	0x04
270  #define ECB2_ZPCI_LSI	0x02
271  	__u8    ecb2;                   /* 0x0062 */
272  #define ECB3_AISI	0x20
273  #define ECB3_AISII	0x10
274  #define ECB3_DEA 0x08
275  #define ECB3_AES 0x04
276  #define ECB3_RI  0x01
277  	__u8    ecb3;			/* 0x0063 */
278  #define ESCA_SCAOL_MASK ~0x3fU
279  	__u32	scaol;			/* 0x0064 */
280  	__u8	sdf;			/* 0x0068 */
281  	__u8    epdx;			/* 0x0069 */
282  	__u8	cpnc;			/* 0x006a */
283  	__u8	reserved6b;		/* 0x006b */
284  	__u32	todpr;			/* 0x006c */
285  #define GISA_FORMAT1 0x00000001
286  	__u32	gd;			/* 0x0070 */
287  	__u8	reserved74[12];		/* 0x0074 */
288  	__u64	mso;			/* 0x0080 */
289  	__u64	msl;			/* 0x0088 */
290  	psw_t	gpsw;			/* 0x0090 */
291  	__u64	gg14;			/* 0x00a0 */
292  	__u64	gg15;			/* 0x00a8 */
293  	__u8	reservedb0[8];		/* 0x00b0 */
294  #define HPID_KVM	0x4
295  #define HPID_VSIE	0x5
296  	__u8	hpid;			/* 0x00b8 */
297  	__u8	reservedb9[7];		/* 0x00b9 */
298  	union {
299  		struct {
300  			__u32	eiparams;	/* 0x00c0 */
301  			__u16	extcpuaddr;	/* 0x00c4 */
302  			__u16	eic;		/* 0x00c6 */
303  		};
304  		__u64	mcic;			/* 0x00c0 */
305  	} __packed;
306  	__u32	reservedc8;		/* 0x00c8 */
307  	union {
308  		struct {
309  			__u16	pgmilc;		/* 0x00cc */
310  			__u16	iprcc;		/* 0x00ce */
311  		};
312  		__u32	edc;			/* 0x00cc */
313  	} __packed;
314  	union {
315  		struct {
316  			__u32	dxc;		/* 0x00d0 */
317  			__u16	mcn;		/* 0x00d4 */
318  			__u8	perc;		/* 0x00d6 */
319  			__u8	peratmid;	/* 0x00d7 */
320  		};
321  		__u64	faddr;			/* 0x00d0 */
322  	} __packed;
323  	__u64	peraddr;		/* 0x00d8 */
324  	__u8	eai;			/* 0x00e0 */
325  	__u8	peraid;			/* 0x00e1 */
326  	__u8	oai;			/* 0x00e2 */
327  	__u8	armid;			/* 0x00e3 */
328  	__u8	reservede4[4];		/* 0x00e4 */
329  	union {
330  		__u64	tecmc;		/* 0x00e8 */
331  		struct {
332  			__u16	subchannel_id;	/* 0x00e8 */
333  			__u16	subchannel_nr;	/* 0x00ea */
334  			__u32	io_int_parm;	/* 0x00ec */
335  			__u32	io_int_word;	/* 0x00f0 */
336  		};
337  	} __packed;
338  	__u8	reservedf4[8];		/* 0x00f4 */
339  #define CRYCB_FORMAT_MASK 0x00000003
340  #define CRYCB_FORMAT0 0x00000000
341  #define CRYCB_FORMAT1 0x00000001
342  #define CRYCB_FORMAT2 0x00000003
343  	__u32	crycbd;			/* 0x00fc */
344  	__u64	gcr[16];		/* 0x0100 */
345  	union {
346  		__u64	gbea;		/* 0x0180 */
347  		__u64	sidad;
348  	};
349  	__u8    reserved188[8];		/* 0x0188 */
350  	__u64   sdnxo;			/* 0x0190 */
351  	__u8    reserved198[8];		/* 0x0198 */
352  	__u32	fac;			/* 0x01a0 */
353  	__u8	reserved1a4[20];	/* 0x01a4 */
354  	__u64	cbrlo;			/* 0x01b8 */
355  	__u8	reserved1c0[8];		/* 0x01c0 */
356  #define ECD_HOSTREGMGMT	0x20000000
357  #define ECD_MEF		0x08000000
358  #define ECD_ETOKENF	0x02000000
359  #define ECD_ECC		0x00200000
360  	__u32	ecd;			/* 0x01c8 */
361  	__u8	reserved1cc[18];	/* 0x01cc */
362  	__u64	pp;			/* 0x01de */
363  	__u8	reserved1e6[2];		/* 0x01e6 */
364  	__u64	itdba;			/* 0x01e8 */
365  	__u64   riccbd;			/* 0x01f0 */
366  	__u64	gvrd;			/* 0x01f8 */
367  } __packed __aligned(512);
368  
369  struct kvm_s390_itdb {
370  	__u8	data[256];
371  };
372  
373  struct sie_page {
374  	struct kvm_s390_sie_block sie_block;
375  	struct mcck_volatile_info mcck_info;	/* 0x0200 */
376  	__u8 reserved218[360];		/* 0x0218 */
377  	__u64 pv_grregs[16];		/* 0x0380 */
378  	__u8 reserved400[512];		/* 0x0400 */
379  	struct kvm_s390_itdb itdb;	/* 0x0600 */
380  	__u8 reserved700[2304];		/* 0x0700 */
381  };
382  
383  struct kvm_vcpu_stat {
384  	struct kvm_vcpu_stat_generic generic;
385  	u64 exit_userspace;
386  	u64 exit_null;
387  	u64 exit_external_request;
388  	u64 exit_io_request;
389  	u64 exit_external_interrupt;
390  	u64 exit_stop_request;
391  	u64 exit_validity;
392  	u64 exit_instruction;
393  	u64 exit_pei;
394  	u64 halt_no_poll_steal;
395  	u64 instruction_lctl;
396  	u64 instruction_lctlg;
397  	u64 instruction_stctl;
398  	u64 instruction_stctg;
399  	u64 exit_program_interruption;
400  	u64 exit_instr_and_program;
401  	u64 exit_operation_exception;
402  	u64 deliver_ckc;
403  	u64 deliver_cputm;
404  	u64 deliver_external_call;
405  	u64 deliver_emergency_signal;
406  	u64 deliver_service_signal;
407  	u64 deliver_virtio;
408  	u64 deliver_stop_signal;
409  	u64 deliver_prefix_signal;
410  	u64 deliver_restart_signal;
411  	u64 deliver_program;
412  	u64 deliver_io;
413  	u64 deliver_machine_check;
414  	u64 exit_wait_state;
415  	u64 inject_ckc;
416  	u64 inject_cputm;
417  	u64 inject_external_call;
418  	u64 inject_emergency_signal;
419  	u64 inject_mchk;
420  	u64 inject_pfault_init;
421  	u64 inject_program;
422  	u64 inject_restart;
423  	u64 inject_set_prefix;
424  	u64 inject_stop_signal;
425  	u64 instruction_epsw;
426  	u64 instruction_gs;
427  	u64 instruction_io_other;
428  	u64 instruction_lpsw;
429  	u64 instruction_lpswe;
430  	u64 instruction_lpswey;
431  	u64 instruction_pfmf;
432  	u64 instruction_ptff;
433  	u64 instruction_sck;
434  	u64 instruction_sckpf;
435  	u64 instruction_stidp;
436  	u64 instruction_spx;
437  	u64 instruction_stpx;
438  	u64 instruction_stap;
439  	u64 instruction_iske;
440  	u64 instruction_ri;
441  	u64 instruction_rrbe;
442  	u64 instruction_sske;
443  	u64 instruction_ipte_interlock;
444  	u64 instruction_stsi;
445  	u64 instruction_stfl;
446  	u64 instruction_tb;
447  	u64 instruction_tpi;
448  	u64 instruction_tprot;
449  	u64 instruction_tsch;
450  	u64 instruction_sie;
451  	u64 instruction_essa;
452  	u64 instruction_sthyi;
453  	u64 instruction_sigp_sense;
454  	u64 instruction_sigp_sense_running;
455  	u64 instruction_sigp_external_call;
456  	u64 instruction_sigp_emergency;
457  	u64 instruction_sigp_cond_emergency;
458  	u64 instruction_sigp_start;
459  	u64 instruction_sigp_stop;
460  	u64 instruction_sigp_stop_store_status;
461  	u64 instruction_sigp_store_status;
462  	u64 instruction_sigp_store_adtl_status;
463  	u64 instruction_sigp_arch;
464  	u64 instruction_sigp_prefix;
465  	u64 instruction_sigp_restart;
466  	u64 instruction_sigp_init_cpu_reset;
467  	u64 instruction_sigp_cpu_reset;
468  	u64 instruction_sigp_unknown;
469  	u64 instruction_diagnose_10;
470  	u64 instruction_diagnose_44;
471  	u64 instruction_diagnose_9c;
472  	u64 diag_9c_ignored;
473  	u64 diag_9c_forward;
474  	u64 instruction_diagnose_258;
475  	u64 instruction_diagnose_308;
476  	u64 instruction_diagnose_500;
477  	u64 instruction_diagnose_other;
478  	u64 pfault_sync;
479  };
480  
481  #define PGM_OPERATION			0x01
482  #define PGM_PRIVILEGED_OP		0x02
483  #define PGM_EXECUTE			0x03
484  #define PGM_PROTECTION			0x04
485  #define PGM_ADDRESSING			0x05
486  #define PGM_SPECIFICATION		0x06
487  #define PGM_DATA			0x07
488  #define PGM_FIXED_POINT_OVERFLOW	0x08
489  #define PGM_FIXED_POINT_DIVIDE		0x09
490  #define PGM_DECIMAL_OVERFLOW		0x0a
491  #define PGM_DECIMAL_DIVIDE		0x0b
492  #define PGM_HFP_EXPONENT_OVERFLOW	0x0c
493  #define PGM_HFP_EXPONENT_UNDERFLOW	0x0d
494  #define PGM_HFP_SIGNIFICANCE		0x0e
495  #define PGM_HFP_DIVIDE			0x0f
496  #define PGM_SEGMENT_TRANSLATION		0x10
497  #define PGM_PAGE_TRANSLATION		0x11
498  #define PGM_TRANSLATION_SPEC		0x12
499  #define PGM_SPECIAL_OPERATION		0x13
500  #define PGM_OPERAND			0x15
501  #define PGM_TRACE_TABEL			0x16
502  #define PGM_VECTOR_PROCESSING		0x1b
503  #define PGM_SPACE_SWITCH		0x1c
504  #define PGM_HFP_SQUARE_ROOT		0x1d
505  #define PGM_PC_TRANSLATION_SPEC		0x1f
506  #define PGM_AFX_TRANSLATION		0x20
507  #define PGM_ASX_TRANSLATION		0x21
508  #define PGM_LX_TRANSLATION		0x22
509  #define PGM_EX_TRANSLATION		0x23
510  #define PGM_PRIMARY_AUTHORITY		0x24
511  #define PGM_SECONDARY_AUTHORITY		0x25
512  #define PGM_LFX_TRANSLATION		0x26
513  #define PGM_LSX_TRANSLATION		0x27
514  #define PGM_ALET_SPECIFICATION		0x28
515  #define PGM_ALEN_TRANSLATION		0x29
516  #define PGM_ALE_SEQUENCE		0x2a
517  #define PGM_ASTE_VALIDITY		0x2b
518  #define PGM_ASTE_SEQUENCE		0x2c
519  #define PGM_EXTENDED_AUTHORITY		0x2d
520  #define PGM_LSTE_SEQUENCE		0x2e
521  #define PGM_ASTE_INSTANCE		0x2f
522  #define PGM_STACK_FULL			0x30
523  #define PGM_STACK_EMPTY			0x31
524  #define PGM_STACK_SPECIFICATION		0x32
525  #define PGM_STACK_TYPE			0x33
526  #define PGM_STACK_OPERATION		0x34
527  #define PGM_ASCE_TYPE			0x38
528  #define PGM_REGION_FIRST_TRANS		0x39
529  #define PGM_REGION_SECOND_TRANS		0x3a
530  #define PGM_REGION_THIRD_TRANS		0x3b
531  #define PGM_MONITOR			0x40
532  #define PGM_PER				0x80
533  #define PGM_CRYPTO_OPERATION		0x119
534  
535  /* irq types in ascend order of priorities */
536  enum irq_types {
537  	IRQ_PEND_SET_PREFIX = 0,
538  	IRQ_PEND_RESTART,
539  	IRQ_PEND_SIGP_STOP,
540  	IRQ_PEND_IO_ISC_7,
541  	IRQ_PEND_IO_ISC_6,
542  	IRQ_PEND_IO_ISC_5,
543  	IRQ_PEND_IO_ISC_4,
544  	IRQ_PEND_IO_ISC_3,
545  	IRQ_PEND_IO_ISC_2,
546  	IRQ_PEND_IO_ISC_1,
547  	IRQ_PEND_IO_ISC_0,
548  	IRQ_PEND_VIRTIO,
549  	IRQ_PEND_PFAULT_DONE,
550  	IRQ_PEND_PFAULT_INIT,
551  	IRQ_PEND_EXT_HOST,
552  	IRQ_PEND_EXT_SERVICE,
553  	IRQ_PEND_EXT_SERVICE_EV,
554  	IRQ_PEND_EXT_TIMING,
555  	IRQ_PEND_EXT_CPU_TIMER,
556  	IRQ_PEND_EXT_CLOCK_COMP,
557  	IRQ_PEND_EXT_EXTERNAL,
558  	IRQ_PEND_EXT_EMERGENCY,
559  	IRQ_PEND_EXT_MALFUNC,
560  	IRQ_PEND_EXT_IRQ_KEY,
561  	IRQ_PEND_MCHK_REP,
562  	IRQ_PEND_PROG,
563  	IRQ_PEND_SVC,
564  	IRQ_PEND_MCHK_EX,
565  	IRQ_PEND_COUNT
566  };
567  
568  /* We have 2M for virtio device descriptor pages. Smallest amount of
569   * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
570   */
571  #define KVM_S390_MAX_VIRTIO_IRQS 87381
572  
573  /*
574   * Repressible (non-floating) machine check interrupts
575   * subclass bits in MCIC
576   */
577  #define MCHK_EXTD_BIT 58
578  #define MCHK_DEGR_BIT 56
579  #define MCHK_WARN_BIT 55
580  #define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
581  		       (1UL << MCHK_EXTD_BIT) | \
582  		       (1UL << MCHK_WARN_BIT))
583  
584  /* Exigent machine check interrupts subclass bits in MCIC */
585  #define MCHK_SD_BIT 63
586  #define MCHK_PD_BIT 62
587  #define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
588  
589  #define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
590  			   (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
591  			   (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
592  			   (1UL << IRQ_PEND_EXT_MALFUNC)    | \
593  			   (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
594  			   (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
595  			   (1UL << IRQ_PEND_EXT_TIMING)     | \
596  			   (1UL << IRQ_PEND_EXT_HOST)       | \
597  			   (1UL << IRQ_PEND_EXT_SERVICE)    | \
598  			   (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
599  			   (1UL << IRQ_PEND_VIRTIO)         | \
600  			   (1UL << IRQ_PEND_PFAULT_INIT)    | \
601  			   (1UL << IRQ_PEND_PFAULT_DONE))
602  
603  #define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
604  			  (1UL << IRQ_PEND_IO_ISC_1) | \
605  			  (1UL << IRQ_PEND_IO_ISC_2) | \
606  			  (1UL << IRQ_PEND_IO_ISC_3) | \
607  			  (1UL << IRQ_PEND_IO_ISC_4) | \
608  			  (1UL << IRQ_PEND_IO_ISC_5) | \
609  			  (1UL << IRQ_PEND_IO_ISC_6) | \
610  			  (1UL << IRQ_PEND_IO_ISC_7))
611  
612  #define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
613  			    (1UL << IRQ_PEND_MCHK_EX))
614  
615  #define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
616  			      (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
617  			      (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
618  			      (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
619  			      (1UL << IRQ_PEND_EXT_SERVICE)    | \
620  			      (1UL << IRQ_PEND_EXT_SERVICE_EV))
621  
622  struct kvm_s390_interrupt_info {
623  	struct list_head list;
624  	u64	type;
625  	union {
626  		struct kvm_s390_io_info io;
627  		struct kvm_s390_ext_info ext;
628  		struct kvm_s390_pgm_info pgm;
629  		struct kvm_s390_emerg_info emerg;
630  		struct kvm_s390_extcall_info extcall;
631  		struct kvm_s390_prefix_info prefix;
632  		struct kvm_s390_stop_info stop;
633  		struct kvm_s390_mchk_info mchk;
634  	};
635  };
636  
637  struct kvm_s390_irq_payload {
638  	struct kvm_s390_io_info io;
639  	struct kvm_s390_ext_info ext;
640  	struct kvm_s390_pgm_info pgm;
641  	struct kvm_s390_emerg_info emerg;
642  	struct kvm_s390_extcall_info extcall;
643  	struct kvm_s390_prefix_info prefix;
644  	struct kvm_s390_stop_info stop;
645  	struct kvm_s390_mchk_info mchk;
646  };
647  
648  struct kvm_s390_local_interrupt {
649  	spinlock_t lock;
650  	DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
651  	struct kvm_s390_irq_payload irq;
652  	unsigned long pending_irqs;
653  };
654  
655  #define FIRQ_LIST_IO_ISC_0 0
656  #define FIRQ_LIST_IO_ISC_1 1
657  #define FIRQ_LIST_IO_ISC_2 2
658  #define FIRQ_LIST_IO_ISC_3 3
659  #define FIRQ_LIST_IO_ISC_4 4
660  #define FIRQ_LIST_IO_ISC_5 5
661  #define FIRQ_LIST_IO_ISC_6 6
662  #define FIRQ_LIST_IO_ISC_7 7
663  #define FIRQ_LIST_PFAULT   8
664  #define FIRQ_LIST_VIRTIO   9
665  #define FIRQ_LIST_COUNT   10
666  #define FIRQ_CNTR_IO       0
667  #define FIRQ_CNTR_SERVICE  1
668  #define FIRQ_CNTR_VIRTIO   2
669  #define FIRQ_CNTR_PFAULT   3
670  #define FIRQ_MAX_COUNT     4
671  
672  /* mask the AIS mode for a given ISC */
673  #define AIS_MODE_MASK(isc) (0x80 >> isc)
674  
675  #define KVM_S390_AIS_MODE_ALL    0
676  #define KVM_S390_AIS_MODE_SINGLE 1
677  
678  struct kvm_s390_float_interrupt {
679  	unsigned long pending_irqs;
680  	unsigned long masked_irqs;
681  	spinlock_t lock;
682  	struct list_head lists[FIRQ_LIST_COUNT];
683  	int counters[FIRQ_MAX_COUNT];
684  	struct kvm_s390_mchk_info mchk;
685  	struct kvm_s390_ext_info srv_signal;
686  	int next_rr_cpu;
687  	struct mutex ais_lock;
688  	u8 simm;
689  	u8 nimm;
690  };
691  
692  struct kvm_hw_wp_info_arch {
693  	unsigned long addr;
694  	unsigned long phys_addr;
695  	int len;
696  	char *old_data;
697  };
698  
699  struct kvm_hw_bp_info_arch {
700  	unsigned long addr;
701  	int len;
702  };
703  
704  /*
705   * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
706   * Further KVM_GUESTDBG flags which an be used from userspace can be found in
707   * arch/s390/include/uapi/asm/kvm.h
708   */
709  #define KVM_GUESTDBG_EXIT_PENDING 0x10000000
710  
711  #define guestdbg_enabled(vcpu) \
712  		(vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
713  #define guestdbg_sstep_enabled(vcpu) \
714  		(vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
715  #define guestdbg_hw_bp_enabled(vcpu) \
716  		(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
717  #define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
718  		(vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
719  
720  #define KVM_GUESTDBG_VALID_MASK \
721  		(KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\
722  		KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING)
723  
724  struct kvm_guestdbg_info_arch {
725  	unsigned long cr0;
726  	unsigned long cr9;
727  	unsigned long cr10;
728  	unsigned long cr11;
729  	struct kvm_hw_bp_info_arch *hw_bp_info;
730  	struct kvm_hw_wp_info_arch *hw_wp_info;
731  	int nr_hw_bp;
732  	int nr_hw_wp;
733  	unsigned long last_bp;
734  };
735  
736  struct kvm_s390_pv_vcpu {
737  	u64 handle;
738  	unsigned long stor_base;
739  };
740  
741  struct kvm_vcpu_arch {
742  	struct kvm_s390_sie_block *sie_block;
743  	/* if vsie is active, currently executed shadow sie control block */
744  	struct kvm_s390_sie_block *vsie_block;
745  	unsigned int      host_acrs[NUM_ACRS];
746  	struct gs_cb      *host_gscb;
747  	struct fpu	  host_fpregs;
748  	struct kvm_s390_local_interrupt local_int;
749  	struct hrtimer    ckc_timer;
750  	struct kvm_s390_pgm_info pgm;
751  	struct gmap *gmap;
752  	/* backup location for the currently enabled gmap when scheduled out */
753  	struct gmap *enabled_gmap;
754  	struct kvm_guestdbg_info_arch guestdbg;
755  	unsigned long pfault_token;
756  	unsigned long pfault_select;
757  	unsigned long pfault_compare;
758  	bool cputm_enabled;
759  	/*
760  	 * The seqcount protects updates to cputm_start and sie_block.cputm,
761  	 * this way we can have non-blocking reads with consistent values.
762  	 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
763  	 * values and to start/stop/enable/disable cpu timer accounting.
764  	 */
765  	seqcount_t cputm_seqcount;
766  	__u64 cputm_start;
767  	bool gs_enabled;
768  	bool skey_enabled;
769  	struct kvm_s390_pv_vcpu pv;
770  	union diag318_info diag318_info;
771  };
772  
773  struct kvm_vm_stat {
774  	struct kvm_vm_stat_generic generic;
775  	u64 inject_io;
776  	u64 inject_float_mchk;
777  	u64 inject_pfault_done;
778  	u64 inject_service_signal;
779  	u64 inject_virtio;
780  	u64 aen_forward;
781  	u64 gmap_shadow_create;
782  	u64 gmap_shadow_reuse;
783  	u64 gmap_shadow_r1_entry;
784  	u64 gmap_shadow_r2_entry;
785  	u64 gmap_shadow_r3_entry;
786  	u64 gmap_shadow_sg_entry;
787  	u64 gmap_shadow_pg_entry;
788  };
789  
790  struct kvm_arch_memory_slot {
791  };
792  
793  struct s390_map_info {
794  	struct list_head list;
795  	__u64 guest_addr;
796  	__u64 addr;
797  	struct page *page;
798  };
799  
800  struct s390_io_adapter {
801  	unsigned int id;
802  	int isc;
803  	bool maskable;
804  	bool masked;
805  	bool swap;
806  	bool suppressible;
807  };
808  
809  #define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
810  #define MAX_S390_ADAPTER_MAPS 256
811  
812  /* maximum size of facilities and facility mask is 2k bytes */
813  #define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
814  #define S390_ARCH_FAC_LIST_SIZE_U64 \
815  	(S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
816  #define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
817  #define S390_ARCH_FAC_MASK_SIZE_U64 \
818  	(S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
819  
820  struct kvm_s390_cpu_model {
821  	/* facility mask supported by kvm & hosting machine */
822  	__u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
823  	struct kvm_s390_vm_cpu_subfunc subfuncs;
824  	/* facility list requested by guest (in dma page) */
825  	__u64 *fac_list;
826  	u64 cpuid;
827  	unsigned short ibc;
828  	/* subset of available UV-features for pv-guests enabled by user space */
829  	struct kvm_s390_vm_cpu_uv_feat uv_feat_guest;
830  };
831  
832  typedef int (*crypto_hook)(struct kvm_vcpu *vcpu);
833  
834  struct kvm_s390_crypto {
835  	struct kvm_s390_crypto_cb *crycb;
836  	struct rw_semaphore pqap_hook_rwsem;
837  	crypto_hook *pqap_hook;
838  	__u32 crycbd;
839  	__u8 aes_kw;
840  	__u8 dea_kw;
841  	__u8 apie;
842  };
843  
844  #define APCB0_MASK_SIZE 1
845  struct kvm_s390_apcb0 {
846  	__u64 apm[APCB0_MASK_SIZE];		/* 0x0000 */
847  	__u64 aqm[APCB0_MASK_SIZE];		/* 0x0008 */
848  	__u64 adm[APCB0_MASK_SIZE];		/* 0x0010 */
849  	__u64 reserved18;			/* 0x0018 */
850  };
851  
852  #define APCB1_MASK_SIZE 4
853  struct kvm_s390_apcb1 {
854  	__u64 apm[APCB1_MASK_SIZE];		/* 0x0000 */
855  	__u64 aqm[APCB1_MASK_SIZE];		/* 0x0020 */
856  	__u64 adm[APCB1_MASK_SIZE];		/* 0x0040 */
857  	__u64 reserved60[4];			/* 0x0060 */
858  };
859  
860  struct kvm_s390_crypto_cb {
861  	struct kvm_s390_apcb0 apcb0;		/* 0x0000 */
862  	__u8   reserved20[0x0048 - 0x0020];	/* 0x0020 */
863  	__u8   dea_wrapping_key_mask[24];	/* 0x0048 */
864  	__u8   aes_wrapping_key_mask[32];	/* 0x0060 */
865  	struct kvm_s390_apcb1 apcb1;		/* 0x0080 */
866  };
867  
868  struct kvm_s390_gisa {
869  	union {
870  		struct { /* common to all formats */
871  			u32 next_alert;
872  			u8  ipm;
873  			u8  reserved01[2];
874  			u8  iam;
875  		};
876  		struct { /* format 0 */
877  			u32 next_alert;
878  			u8  ipm;
879  			u8  reserved01;
880  			u8  : 6;
881  			u8  g : 1;
882  			u8  c : 1;
883  			u8  iam;
884  			u8  reserved02[4];
885  			u32 airq_count;
886  		} g0;
887  		struct { /* format 1 */
888  			u32 next_alert;
889  			u8  ipm;
890  			u8  simm;
891  			u8  nimm;
892  			u8  iam;
893  			u8  aism[8];
894  			u8  : 6;
895  			u8  g : 1;
896  			u8  c : 1;
897  			u8  reserved03[11];
898  			u32 airq_count;
899  		} g1;
900  		struct {
901  			u64 word[4];
902  		} u64;
903  	};
904  };
905  
906  struct kvm_s390_gib {
907  	u32 alert_list_origin;
908  	u32 reserved01;
909  	u8:5;
910  	u8  nisc:3;
911  	u8  reserved03[3];
912  	u32 reserved04[5];
913  };
914  
915  /*
916   * sie_page2 has to be allocated as DMA because fac_list, crycb and
917   * gisa need 31bit addresses in the sie control block.
918   */
919  struct sie_page2 {
920  	__u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];	/* 0x0000 */
921  	struct kvm_s390_crypto_cb crycb;		/* 0x0800 */
922  	struct kvm_s390_gisa gisa;			/* 0x0900 */
923  	struct kvm *kvm;				/* 0x0920 */
924  	u8 reserved928[0x1000 - 0x928];			/* 0x0928 */
925  };
926  
927  struct kvm_s390_vsie {
928  	struct mutex mutex;
929  	struct radix_tree_root addr_to_page;
930  	int page_count;
931  	int next;
932  	struct page *pages[KVM_MAX_VCPUS];
933  };
934  
935  struct kvm_s390_gisa_iam {
936  	u8 mask;
937  	spinlock_t ref_lock;
938  	u32 ref_count[MAX_ISC + 1];
939  };
940  
941  struct kvm_s390_gisa_interrupt {
942  	struct kvm_s390_gisa *origin;
943  	struct kvm_s390_gisa_iam alert;
944  	struct hrtimer timer;
945  	u64 expires;
946  	DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
947  };
948  
949  struct kvm_s390_pv {
950  	u64 handle;
951  	u64 guest_len;
952  	unsigned long stor_base;
953  	void *stor_var;
954  	bool dumping;
955  	void *set_aside;
956  	struct list_head need_cleanup;
957  	struct mmu_notifier mmu_notifier;
958  };
959  
960  struct kvm_arch{
961  	void *sca;
962  	int use_esca;
963  	rwlock_t sca_lock;
964  	debug_info_t *dbf;
965  	struct kvm_s390_float_interrupt float_int;
966  	struct kvm_device *flic;
967  	struct gmap *gmap;
968  	unsigned long mem_limit;
969  	int css_support;
970  	int use_irqchip;
971  	int use_cmma;
972  	int use_pfmfi;
973  	int use_skf;
974  	int use_zpci_interp;
975  	int user_cpu_state_ctrl;
976  	int user_sigp;
977  	int user_stsi;
978  	int user_instr0;
979  	struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
980  	wait_queue_head_t ipte_wq;
981  	int ipte_lock_count;
982  	struct mutex ipte_mutex;
983  	spinlock_t start_stop_lock;
984  	struct sie_page2 *sie_page2;
985  	struct kvm_s390_cpu_model model;
986  	struct kvm_s390_crypto crypto;
987  	struct kvm_s390_vsie vsie;
988  	u8 epdx;
989  	u64 epoch;
990  	int migration_mode;
991  	atomic64_t cmma_dirty_pages;
992  	/* subset of available cpu features enabled by user space */
993  	DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
994  	/* indexed by vcpu_idx */
995  	DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
996  	struct kvm_s390_gisa_interrupt gisa_int;
997  	struct kvm_s390_pv pv;
998  	struct list_head kzdev_list;
999  	spinlock_t kzdev_list_lock;
1000  };
1001  
1002  #define KVM_HVA_ERR_BAD		(-1UL)
1003  #define KVM_HVA_ERR_RO_BAD	(-2UL)
1004  
kvm_is_error_hva(unsigned long addr)1005  static inline bool kvm_is_error_hva(unsigned long addr)
1006  {
1007  	return IS_ERR_VALUE(addr);
1008  }
1009  
1010  #define ASYNC_PF_PER_VCPU	64
1011  struct kvm_arch_async_pf {
1012  	unsigned long pfault_token;
1013  };
1014  
1015  bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
1016  
1017  void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1018  			       struct kvm_async_pf *work);
1019  
1020  bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1021  				     struct kvm_async_pf *work);
1022  
1023  void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1024  				 struct kvm_async_pf *work);
1025  
kvm_arch_async_page_present_queued(struct kvm_vcpu * vcpu)1026  static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
1027  
1028  void kvm_arch_crypto_clear_masks(struct kvm *kvm);
1029  void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
1030  			       unsigned long *aqm, unsigned long *adm);
1031  
1032  int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa);
1033  
sie64a(struct kvm_s390_sie_block * sie_block,u64 * rsa)1034  static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa)
1035  {
1036  	return __sie64a(virt_to_phys(sie_block), sie_block, rsa);
1037  }
1038  
1039  extern char sie_exit;
1040  
1041  bool kvm_s390_pv_is_protected(struct kvm *kvm);
1042  bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu);
1043  
1044  extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
1045  extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
1046  
kvm_arch_sync_events(struct kvm * kvm)1047  static inline void kvm_arch_sync_events(struct kvm *kvm) {}
kvm_arch_sched_in(struct kvm_vcpu * vcpu,int cpu)1048  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)1049  static inline void kvm_arch_free_memslot(struct kvm *kvm,
1050  					 struct kvm_memory_slot *slot) {}
kvm_arch_memslots_updated(struct kvm * kvm,u64 gen)1051  static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
kvm_arch_flush_shadow_all(struct kvm * kvm)1052  static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
kvm_arch_flush_shadow_memslot(struct kvm * kvm,struct kvm_memory_slot * slot)1053  static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
1054  		struct kvm_memory_slot *slot) {}
kvm_arch_vcpu_blocking(struct kvm_vcpu * vcpu)1055  static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
kvm_arch_vcpu_unblocking(struct kvm_vcpu * vcpu)1056  static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
1057  
1058  #define __KVM_HAVE_ARCH_VM_FREE
1059  void kvm_arch_free_vm(struct kvm *kvm);
1060  
1061  struct zpci_kvm_hook {
1062  	int (*kvm_register)(void *opaque, struct kvm *kvm);
1063  	void (*kvm_unregister)(void *opaque);
1064  };
1065  
1066  extern struct zpci_kvm_hook zpci_kvm_hook;
1067  
1068  #endif
1069