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
  56union bsca_sigp_ctrl {
  57	__u8 value;
  58	struct {
  59		__u8 c : 1;
  60		__u8 r : 1;
  61		__u8 scn : 6;
  62	};
  63};
  64
  65union esca_sigp_ctrl {
  66	__u16 value;
  67	struct {
  68		__u8 c : 1;
  69		__u8 reserved: 7;
  70		__u8 scn;
  71	};
  72};
  73
  74struct esca_entry {
  75	union esca_sigp_ctrl sigp_ctrl;
  76	__u16   reserved1[3];
  77	__u64   sda;
  78	__u64   reserved2[6];
  79};
  80
  81struct 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
  89union 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
  98union sca_utility {
  99	__u16 val;
 100	struct {
 101		__u16 mtcr : 1;
 102		__u16 reserved : 15;
 103	};
 104};
 105
 106struct 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
 115struct 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 */
 132struct 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
 173struct 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
 369struct kvm_s390_itdb {
 370	__u8	data[256];
 371};
 372
 373struct 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
 383struct 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_pfmf;
 431	u64 instruction_ptff;
 432	u64 instruction_sck;
 433	u64 instruction_sckpf;
 434	u64 instruction_stidp;
 435	u64 instruction_spx;
 436	u64 instruction_stpx;
 437	u64 instruction_stap;
 438	u64 instruction_iske;
 439	u64 instruction_ri;
 440	u64 instruction_rrbe;
 441	u64 instruction_sske;
 442	u64 instruction_ipte_interlock;
 443	u64 instruction_stsi;
 444	u64 instruction_stfl;
 445	u64 instruction_tb;
 446	u64 instruction_tpi;
 447	u64 instruction_tprot;
 448	u64 instruction_tsch;
 449	u64 instruction_sie;
 450	u64 instruction_essa;
 451	u64 instruction_sthyi;
 452	u64 instruction_sigp_sense;
 453	u64 instruction_sigp_sense_running;
 454	u64 instruction_sigp_external_call;
 455	u64 instruction_sigp_emergency;
 456	u64 instruction_sigp_cond_emergency;
 457	u64 instruction_sigp_start;
 458	u64 instruction_sigp_stop;
 459	u64 instruction_sigp_stop_store_status;
 460	u64 instruction_sigp_store_status;
 461	u64 instruction_sigp_store_adtl_status;
 462	u64 instruction_sigp_arch;
 463	u64 instruction_sigp_prefix;
 464	u64 instruction_sigp_restart;
 465	u64 instruction_sigp_init_cpu_reset;
 466	u64 instruction_sigp_cpu_reset;
 467	u64 instruction_sigp_unknown;
 468	u64 instruction_diagnose_10;
 469	u64 instruction_diagnose_44;
 470	u64 instruction_diagnose_9c;
 471	u64 diag_9c_ignored;
 472	u64 diag_9c_forward;
 473	u64 instruction_diagnose_258;
 474	u64 instruction_diagnose_308;
 475	u64 instruction_diagnose_500;
 476	u64 instruction_diagnose_other;
 477	u64 pfault_sync;
 478};
 479
 480#define PGM_OPERATION			0x01
 481#define PGM_PRIVILEGED_OP		0x02
 482#define PGM_EXECUTE			0x03
 483#define PGM_PROTECTION			0x04
 484#define PGM_ADDRESSING			0x05
 485#define PGM_SPECIFICATION		0x06
 486#define PGM_DATA			0x07
 487#define PGM_FIXED_POINT_OVERFLOW	0x08
 488#define PGM_FIXED_POINT_DIVIDE		0x09
 489#define PGM_DECIMAL_OVERFLOW		0x0a
 490#define PGM_DECIMAL_DIVIDE		0x0b
 491#define PGM_HFP_EXPONENT_OVERFLOW	0x0c
 492#define PGM_HFP_EXPONENT_UNDERFLOW	0x0d
 493#define PGM_HFP_SIGNIFICANCE		0x0e
 494#define PGM_HFP_DIVIDE			0x0f
 495#define PGM_SEGMENT_TRANSLATION		0x10
 496#define PGM_PAGE_TRANSLATION		0x11
 497#define PGM_TRANSLATION_SPEC		0x12
 498#define PGM_SPECIAL_OPERATION		0x13
 499#define PGM_OPERAND			0x15
 500#define PGM_TRACE_TABEL			0x16
 501#define PGM_VECTOR_PROCESSING		0x1b
 502#define PGM_SPACE_SWITCH		0x1c
 503#define PGM_HFP_SQUARE_ROOT		0x1d
 504#define PGM_PC_TRANSLATION_SPEC		0x1f
 505#define PGM_AFX_TRANSLATION		0x20
 506#define PGM_ASX_TRANSLATION		0x21
 507#define PGM_LX_TRANSLATION		0x22
 508#define PGM_EX_TRANSLATION		0x23
 509#define PGM_PRIMARY_AUTHORITY		0x24
 510#define PGM_SECONDARY_AUTHORITY		0x25
 511#define PGM_LFX_TRANSLATION		0x26
 512#define PGM_LSX_TRANSLATION		0x27
 513#define PGM_ALET_SPECIFICATION		0x28
 514#define PGM_ALEN_TRANSLATION		0x29
 515#define PGM_ALE_SEQUENCE		0x2a
 516#define PGM_ASTE_VALIDITY		0x2b
 517#define PGM_ASTE_SEQUENCE		0x2c
 518#define PGM_EXTENDED_AUTHORITY		0x2d
 519#define PGM_LSTE_SEQUENCE		0x2e
 520#define PGM_ASTE_INSTANCE		0x2f
 521#define PGM_STACK_FULL			0x30
 522#define PGM_STACK_EMPTY			0x31
 523#define PGM_STACK_SPECIFICATION		0x32
 524#define PGM_STACK_TYPE			0x33
 525#define PGM_STACK_OPERATION		0x34
 526#define PGM_ASCE_TYPE			0x38
 527#define PGM_REGION_FIRST_TRANS		0x39
 528#define PGM_REGION_SECOND_TRANS		0x3a
 529#define PGM_REGION_THIRD_TRANS		0x3b
 530#define PGM_MONITOR			0x40
 531#define PGM_PER				0x80
 532#define PGM_CRYPTO_OPERATION		0x119
 533
 534/* irq types in ascend order of priorities */
 535enum irq_types {
 536	IRQ_PEND_SET_PREFIX = 0,
 537	IRQ_PEND_RESTART,
 538	IRQ_PEND_SIGP_STOP,
 539	IRQ_PEND_IO_ISC_7,
 540	IRQ_PEND_IO_ISC_6,
 541	IRQ_PEND_IO_ISC_5,
 542	IRQ_PEND_IO_ISC_4,
 543	IRQ_PEND_IO_ISC_3,
 544	IRQ_PEND_IO_ISC_2,
 545	IRQ_PEND_IO_ISC_1,
 546	IRQ_PEND_IO_ISC_0,
 547	IRQ_PEND_VIRTIO,
 548	IRQ_PEND_PFAULT_DONE,
 549	IRQ_PEND_PFAULT_INIT,
 550	IRQ_PEND_EXT_HOST,
 551	IRQ_PEND_EXT_SERVICE,
 552	IRQ_PEND_EXT_SERVICE_EV,
 553	IRQ_PEND_EXT_TIMING,
 554	IRQ_PEND_EXT_CPU_TIMER,
 555	IRQ_PEND_EXT_CLOCK_COMP,
 556	IRQ_PEND_EXT_EXTERNAL,
 557	IRQ_PEND_EXT_EMERGENCY,
 558	IRQ_PEND_EXT_MALFUNC,
 559	IRQ_PEND_EXT_IRQ_KEY,
 560	IRQ_PEND_MCHK_REP,
 561	IRQ_PEND_PROG,
 562	IRQ_PEND_SVC,
 563	IRQ_PEND_MCHK_EX,
 564	IRQ_PEND_COUNT
 565};
 566
 567/* We have 2M for virtio device descriptor pages. Smallest amount of
 568 * memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
 569 */
 570#define KVM_S390_MAX_VIRTIO_IRQS 87381
 571
 572/*
 573 * Repressible (non-floating) machine check interrupts
 574 * subclass bits in MCIC
 575 */
 576#define MCHK_EXTD_BIT 58
 577#define MCHK_DEGR_BIT 56
 578#define MCHK_WARN_BIT 55
 579#define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
 580		       (1UL << MCHK_EXTD_BIT) | \
 581		       (1UL << MCHK_WARN_BIT))
 582
 583/* Exigent machine check interrupts subclass bits in MCIC */
 584#define MCHK_SD_BIT 63
 585#define MCHK_PD_BIT 62
 586#define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
 587
 588#define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY)    | \
 589			   (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 590			   (1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 591			   (1UL << IRQ_PEND_EXT_MALFUNC)    | \
 592			   (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 593			   (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 594			   (1UL << IRQ_PEND_EXT_TIMING)     | \
 595			   (1UL << IRQ_PEND_EXT_HOST)       | \
 596			   (1UL << IRQ_PEND_EXT_SERVICE)    | \
 597			   (1UL << IRQ_PEND_EXT_SERVICE_EV) | \
 598			   (1UL << IRQ_PEND_VIRTIO)         | \
 599			   (1UL << IRQ_PEND_PFAULT_INIT)    | \
 600			   (1UL << IRQ_PEND_PFAULT_DONE))
 601
 602#define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
 603			  (1UL << IRQ_PEND_IO_ISC_1) | \
 604			  (1UL << IRQ_PEND_IO_ISC_2) | \
 605			  (1UL << IRQ_PEND_IO_ISC_3) | \
 606			  (1UL << IRQ_PEND_IO_ISC_4) | \
 607			  (1UL << IRQ_PEND_IO_ISC_5) | \
 608			  (1UL << IRQ_PEND_IO_ISC_6) | \
 609			  (1UL << IRQ_PEND_IO_ISC_7))
 610
 611#define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
 612			    (1UL << IRQ_PEND_MCHK_EX))
 613
 614#define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER)  | \
 615			      (1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
 616			      (1UL << IRQ_PEND_EXT_EMERGENCY)  | \
 617			      (1UL << IRQ_PEND_EXT_EXTERNAL)   | \
 618			      (1UL << IRQ_PEND_EXT_SERVICE)    | \
 619			      (1UL << IRQ_PEND_EXT_SERVICE_EV))
 620
 621struct kvm_s390_interrupt_info {
 622	struct list_head list;
 623	u64	type;
 624	union {
 625		struct kvm_s390_io_info io;
 626		struct kvm_s390_ext_info ext;
 627		struct kvm_s390_pgm_info pgm;
 628		struct kvm_s390_emerg_info emerg;
 629		struct kvm_s390_extcall_info extcall;
 630		struct kvm_s390_prefix_info prefix;
 631		struct kvm_s390_stop_info stop;
 632		struct kvm_s390_mchk_info mchk;
 633	};
 634};
 635
 636struct kvm_s390_irq_payload {
 637	struct kvm_s390_io_info io;
 638	struct kvm_s390_ext_info ext;
 639	struct kvm_s390_pgm_info pgm;
 640	struct kvm_s390_emerg_info emerg;
 641	struct kvm_s390_extcall_info extcall;
 642	struct kvm_s390_prefix_info prefix;
 643	struct kvm_s390_stop_info stop;
 644	struct kvm_s390_mchk_info mchk;
 645};
 646
 647struct kvm_s390_local_interrupt {
 648	spinlock_t lock;
 649	DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
 650	struct kvm_s390_irq_payload irq;
 651	unsigned long pending_irqs;
 
 
 
 
 652};
 653
 654#define FIRQ_LIST_IO_ISC_0 0
 655#define FIRQ_LIST_IO_ISC_1 1
 656#define FIRQ_LIST_IO_ISC_2 2
 657#define FIRQ_LIST_IO_ISC_3 3
 658#define FIRQ_LIST_IO_ISC_4 4
 659#define FIRQ_LIST_IO_ISC_5 5
 660#define FIRQ_LIST_IO_ISC_6 6
 661#define FIRQ_LIST_IO_ISC_7 7
 662#define FIRQ_LIST_PFAULT   8
 663#define FIRQ_LIST_VIRTIO   9
 664#define FIRQ_LIST_COUNT   10
 665#define FIRQ_CNTR_IO       0
 666#define FIRQ_CNTR_SERVICE  1
 667#define FIRQ_CNTR_VIRTIO   2
 668#define FIRQ_CNTR_PFAULT   3
 669#define FIRQ_MAX_COUNT     4
 670
 671/* mask the AIS mode for a given ISC */
 672#define AIS_MODE_MASK(isc) (0x80 >> isc)
 673
 674#define KVM_S390_AIS_MODE_ALL    0
 675#define KVM_S390_AIS_MODE_SINGLE 1
 676
 677struct kvm_s390_float_interrupt {
 678	unsigned long pending_irqs;
 679	unsigned long masked_irqs;
 680	spinlock_t lock;
 681	struct list_head lists[FIRQ_LIST_COUNT];
 682	int counters[FIRQ_MAX_COUNT];
 683	struct kvm_s390_mchk_info mchk;
 684	struct kvm_s390_ext_info srv_signal;
 685	int next_rr_cpu;
 686	struct mutex ais_lock;
 687	u8 simm;
 688	u8 nimm;
 689};
 690
 691struct kvm_hw_wp_info_arch {
 692	unsigned long addr;
 693	unsigned long phys_addr;
 694	int len;
 695	char *old_data;
 696};
 697
 698struct kvm_hw_bp_info_arch {
 699	unsigned long addr;
 700	int len;
 701};
 702
 703/*
 704 * Only the upper 16 bits of kvm_guest_debug->control are arch specific.
 705 * Further KVM_GUESTDBG flags which an be used from userspace can be found in
 706 * arch/s390/include/uapi/asm/kvm.h
 707 */
 708#define KVM_GUESTDBG_EXIT_PENDING 0x10000000
 709
 710#define guestdbg_enabled(vcpu) \
 711		(vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
 712#define guestdbg_sstep_enabled(vcpu) \
 713		(vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
 714#define guestdbg_hw_bp_enabled(vcpu) \
 715		(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
 716#define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
 717		(vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
 718
 719#define KVM_GUESTDBG_VALID_MASK \
 720		(KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\
 721		KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING)
 722
 723struct kvm_guestdbg_info_arch {
 724	unsigned long cr0;
 725	unsigned long cr9;
 726	unsigned long cr10;
 727	unsigned long cr11;
 728	struct kvm_hw_bp_info_arch *hw_bp_info;
 729	struct kvm_hw_wp_info_arch *hw_wp_info;
 730	int nr_hw_bp;
 731	int nr_hw_wp;
 732	unsigned long last_bp;
 733};
 734
 735struct kvm_s390_pv_vcpu {
 736	u64 handle;
 737	unsigned long stor_base;
 738};
 739
 740struct kvm_vcpu_arch {
 741	struct kvm_s390_sie_block *sie_block;
 742	/* if vsie is active, currently executed shadow sie control block */
 743	struct kvm_s390_sie_block *vsie_block;
 744	unsigned int      host_acrs[NUM_ACRS];
 745	struct gs_cb      *host_gscb;
 746	struct fpu	  host_fpregs;
 747	struct kvm_s390_local_interrupt local_int;
 748	struct hrtimer    ckc_timer;
 749	struct kvm_s390_pgm_info pgm;
 
 
 
 
 750	struct gmap *gmap;
 751	/* backup location for the currently enabled gmap when scheduled out */
 752	struct gmap *enabled_gmap;
 753	struct kvm_guestdbg_info_arch guestdbg;
 754	unsigned long pfault_token;
 755	unsigned long pfault_select;
 756	unsigned long pfault_compare;
 757	bool cputm_enabled;
 758	/*
 759	 * The seqcount protects updates to cputm_start and sie_block.cputm,
 760	 * this way we can have non-blocking reads with consistent values.
 761	 * Only the owning VCPU thread (vcpu->cpu) is allowed to change these
 762	 * values and to start/stop/enable/disable cpu timer accounting.
 763	 */
 764	seqcount_t cputm_seqcount;
 765	__u64 cputm_start;
 766	bool gs_enabled;
 767	bool skey_enabled;
 768	struct kvm_s390_pv_vcpu pv;
 769	union diag318_info diag318_info;
 770};
 771
 772struct kvm_vm_stat {
 773	struct kvm_vm_stat_generic generic;
 774	u64 inject_io;
 775	u64 inject_float_mchk;
 776	u64 inject_pfault_done;
 777	u64 inject_service_signal;
 778	u64 inject_virtio;
 779	u64 aen_forward;
 780};
 781
 782struct kvm_arch_memory_slot {
 783};
 784
 785struct s390_map_info {
 786	struct list_head list;
 787	__u64 guest_addr;
 788	__u64 addr;
 789	struct page *page;
 790};
 791
 792struct s390_io_adapter {
 793	unsigned int id;
 794	int isc;
 795	bool maskable;
 796	bool masked;
 797	bool swap;
 798	bool suppressible;
 799};
 800
 801#define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
 802#define MAX_S390_ADAPTER_MAPS 256
 803
 804/* maximum size of facilities and facility mask is 2k bytes */
 805#define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
 806#define S390_ARCH_FAC_LIST_SIZE_U64 \
 807	(S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
 808#define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
 809#define S390_ARCH_FAC_MASK_SIZE_U64 \
 810	(S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
 811
 812struct kvm_s390_cpu_model {
 813	/* facility mask supported by kvm & hosting machine */
 814	__u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
 815	struct kvm_s390_vm_cpu_subfunc subfuncs;
 816	/* facility list requested by guest (in dma page) */
 817	__u64 *fac_list;
 818	u64 cpuid;
 819	unsigned short ibc;
 820};
 821
 822typedef int (*crypto_hook)(struct kvm_vcpu *vcpu);
 823
 824struct kvm_s390_crypto {
 825	struct kvm_s390_crypto_cb *crycb;
 826	struct rw_semaphore pqap_hook_rwsem;
 827	crypto_hook *pqap_hook;
 828	__u32 crycbd;
 829	__u8 aes_kw;
 830	__u8 dea_kw;
 831	__u8 apie;
 832};
 833
 834#define APCB0_MASK_SIZE 1
 835struct kvm_s390_apcb0 {
 836	__u64 apm[APCB0_MASK_SIZE];		/* 0x0000 */
 837	__u64 aqm[APCB0_MASK_SIZE];		/* 0x0008 */
 838	__u64 adm[APCB0_MASK_SIZE];		/* 0x0010 */
 839	__u64 reserved18;			/* 0x0018 */
 840};
 841
 842#define APCB1_MASK_SIZE 4
 843struct kvm_s390_apcb1 {
 844	__u64 apm[APCB1_MASK_SIZE];		/* 0x0000 */
 845	__u64 aqm[APCB1_MASK_SIZE];		/* 0x0020 */
 846	__u64 adm[APCB1_MASK_SIZE];		/* 0x0040 */
 847	__u64 reserved60[4];			/* 0x0060 */
 848};
 849
 850struct kvm_s390_crypto_cb {
 851	struct kvm_s390_apcb0 apcb0;		/* 0x0000 */
 852	__u8   reserved20[0x0048 - 0x0020];	/* 0x0020 */
 853	__u8   dea_wrapping_key_mask[24];	/* 0x0048 */
 854	__u8   aes_wrapping_key_mask[32];	/* 0x0060 */
 855	struct kvm_s390_apcb1 apcb1;		/* 0x0080 */
 856};
 857
 858struct kvm_s390_gisa {
 859	union {
 860		struct { /* common to all formats */
 861			u32 next_alert;
 862			u8  ipm;
 863			u8  reserved01[2];
 864			u8  iam;
 865		};
 866		struct { /* format 0 */
 867			u32 next_alert;
 868			u8  ipm;
 869			u8  reserved01;
 870			u8  : 6;
 871			u8  g : 1;
 872			u8  c : 1;
 873			u8  iam;
 874			u8  reserved02[4];
 875			u32 airq_count;
 876		} g0;
 877		struct { /* format 1 */
 878			u32 next_alert;
 879			u8  ipm;
 880			u8  simm;
 881			u8  nimm;
 882			u8  iam;
 883			u8  aism[8];
 884			u8  : 6;
 885			u8  g : 1;
 886			u8  c : 1;
 887			u8  reserved03[11];
 888			u32 airq_count;
 889		} g1;
 890		struct {
 891			u64 word[4];
 892		} u64;
 893	};
 894};
 895
 896struct kvm_s390_gib {
 897	u32 alert_list_origin;
 898	u32 reserved01;
 899	u8:5;
 900	u8  nisc:3;
 901	u8  reserved03[3];
 902	u32 reserved04[5];
 903};
 904
 905/*
 906 * sie_page2 has to be allocated as DMA because fac_list, crycb and
 907 * gisa need 31bit addresses in the sie control block.
 908 */
 909struct sie_page2 {
 910	__u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64];	/* 0x0000 */
 911	struct kvm_s390_crypto_cb crycb;		/* 0x0800 */
 912	struct kvm_s390_gisa gisa;			/* 0x0900 */
 913	struct kvm *kvm;				/* 0x0920 */
 914	u8 reserved928[0x1000 - 0x928];			/* 0x0928 */
 915};
 916
 917struct kvm_s390_vsie {
 918	struct mutex mutex;
 919	struct radix_tree_root addr_to_page;
 920	int page_count;
 921	int next;
 922	struct page *pages[KVM_MAX_VCPUS];
 923};
 924
 925struct kvm_s390_gisa_iam {
 926	u8 mask;
 927	spinlock_t ref_lock;
 928	u32 ref_count[MAX_ISC + 1];
 929};
 930
 931struct kvm_s390_gisa_interrupt {
 932	struct kvm_s390_gisa *origin;
 933	struct kvm_s390_gisa_iam alert;
 934	struct hrtimer timer;
 935	u64 expires;
 936	DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
 937};
 938
 939struct kvm_s390_pv {
 940	u64 handle;
 941	u64 guest_len;
 942	unsigned long stor_base;
 943	void *stor_var;
 944	bool dumping;
 945	void *set_aside;
 946	struct list_head need_cleanup;
 947	struct mmu_notifier mmu_notifier;
 948};
 949
 950struct kvm_arch{
 951	void *sca;
 952	int use_esca;
 953	rwlock_t sca_lock;
 954	debug_info_t *dbf;
 955	struct kvm_s390_float_interrupt float_int;
 956	struct kvm_device *flic;
 957	struct gmap *gmap;
 958	unsigned long mem_limit;
 959	int css_support;
 960	int use_irqchip;
 961	int use_cmma;
 962	int use_pfmfi;
 963	int use_skf;
 964	int use_zpci_interp;
 965	int user_cpu_state_ctrl;
 966	int user_sigp;
 967	int user_stsi;
 968	int user_instr0;
 969	struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
 970	wait_queue_head_t ipte_wq;
 971	int ipte_lock_count;
 972	struct mutex ipte_mutex;
 973	spinlock_t start_stop_lock;
 974	struct sie_page2 *sie_page2;
 975	struct kvm_s390_cpu_model model;
 976	struct kvm_s390_crypto crypto;
 977	struct kvm_s390_vsie vsie;
 978	u8 epdx;
 979	u64 epoch;
 980	int migration_mode;
 981	atomic64_t cmma_dirty_pages;
 982	/* subset of available cpu features enabled by user space */
 983	DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
 984	/* indexed by vcpu_idx */
 985	DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
 986	struct kvm_s390_gisa_interrupt gisa_int;
 987	struct kvm_s390_pv pv;
 988	struct list_head kzdev_list;
 989	spinlock_t kzdev_list_lock;
 990};
 991
 992#define KVM_HVA_ERR_BAD		(-1UL)
 993#define KVM_HVA_ERR_RO_BAD	(-2UL)
 994
 995static inline bool kvm_is_error_hva(unsigned long addr)
 996{
 997	return IS_ERR_VALUE(addr);
 998}
 999
1000#define ASYNC_PF_PER_VCPU	64
1001struct kvm_arch_async_pf {
1002	unsigned long pfault_token;
1003};
1004
1005bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
1006
1007void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
1008			       struct kvm_async_pf *work);
1009
1010bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
1011				     struct kvm_async_pf *work);
1012
1013void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
1014				 struct kvm_async_pf *work);
1015
1016static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
1017
1018void kvm_arch_crypto_clear_masks(struct kvm *kvm);
1019void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
1020			       unsigned long *aqm, unsigned long *adm);
1021
1022int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa);
1023
1024static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa)
1025{
1026	return __sie64a(virt_to_phys(sie_block), sie_block, rsa);
1027}
1028
1029extern char sie_exit;
1030
1031extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
1032extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
1033
1034static inline void kvm_arch_hardware_disable(void) {}
1035static inline void kvm_arch_sync_events(struct kvm *kvm) {}
1036static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
1037static inline void kvm_arch_free_memslot(struct kvm *kvm,
1038					 struct kvm_memory_slot *slot) {}
1039static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
1040static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
1041static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
1042		struct kvm_memory_slot *slot) {}
1043static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
1044static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
1045
1046#define __KVM_HAVE_ARCH_VM_FREE
1047void kvm_arch_free_vm(struct kvm *kvm);
1048
1049struct zpci_kvm_hook {
1050	int (*kvm_register)(void *opaque, struct kvm *kvm);
1051	void (*kvm_unregister)(void *opaque);
1052};
1053
1054extern struct zpci_kvm_hook zpci_kvm_hook;
1055
1056#endif