/* SPDX-License-Identifier: GPL-2.0 */
/*
* definition for kernel virtual machines on s390
*
* Copyright IBM Corp. 2008, 2018
*
* Author(s): Carsten Otte <cotte@de.ibm.com>
*/
#ifndef ASM_KVM_HOST_H
#define ASM_KVM_HOST_H
#include <linux/types.h>
#include <linux/hrtimer.h>
#include <linux/interrupt.h>
#include <linux/kvm_types.h>
#include <linux/kvm_host.h>
#include <linux/kvm.h>
#include <linux/seqlock.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/mmu_notifier.h>
#include <asm/debug.h>
#include <asm/cpu.h>
#include <asm/fpu/api.h>
#include <asm/isc.h>
#include <asm/guarded_storage.h>
#define KVM_S390_BSCA_CPU_SLOTS 64
#define KVM_S390_ESCA_CPU_SLOTS 248
#define KVM_MAX_VCPUS 255
/*
* These seem to be used for allocating ->chip in the routing table, which we
* don't use. 1 is as small as we can get to reduce the needed memory. If we
* need to look at ->chip later on, we'll need to revisit this.
*/
#define KVM_NR_IRQCHIPS 1
#define KVM_IRQCHIP_NUM_PINS 1
#define KVM_HALT_POLL_NS_DEFAULT 50000
/* s390-specific vcpu->requests bit members */
#define KVM_REQ_ENABLE_IBS KVM_ARCH_REQ(0)
#define KVM_REQ_DISABLE_IBS KVM_ARCH_REQ(1)
#define KVM_REQ_ICPT_OPEREXC KVM_ARCH_REQ(2)
#define KVM_REQ_START_MIGRATION KVM_ARCH_REQ(3)
#define KVM_REQ_STOP_MIGRATION KVM_ARCH_REQ(4)
#define KVM_REQ_VSIE_RESTART KVM_ARCH_REQ(5)
#define KVM_REQ_REFRESH_GUEST_PREFIX \
KVM_ARCH_REQ_FLAGS(6, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
#define SIGP_CTRL_C 0x80
#define SIGP_CTRL_SCN_MASK 0x3f
union bsca_sigp_ctrl {
__u8 value;
struct {
__u8 c : 1;
__u8 r : 1;
__u8 scn : 6;
};
};
union esca_sigp_ctrl {
__u16 value;
struct {
__u8 c : 1;
__u8 reserved: 7;
__u8 scn;
};
};
struct esca_entry {
union esca_sigp_ctrl sigp_ctrl;
__u16 reserved1[3];
__u64 sda;
__u64 reserved2[6];
};
struct bsca_entry {
__u8 reserved0;
union bsca_sigp_ctrl sigp_ctrl;
__u16 reserved[3];
__u64 sda;
__u64 reserved2[2];
};
union ipte_control {
unsigned long val;
struct {
unsigned long k : 1;
unsigned long kh : 31;
unsigned long kg : 32;
};
};
union sca_utility {
__u16 val;
struct {
__u16 mtcr : 1;
__u16 reserved : 15;
};
};
struct bsca_block {
union ipte_control ipte_control;
__u64 reserved[5];
__u64 mcn;
union sca_utility utility;
__u8 reserved2[6];
struct bsca_entry cpu[KVM_S390_BSCA_CPU_SLOTS];
};
struct esca_block {
union ipte_control ipte_control;
__u64 reserved1[6];
union sca_utility utility;
__u8 reserved2[6];
__u64 mcn[4];
__u64 reserved3[20];
struct esca_entry cpu[KVM_S390_ESCA_CPU_SLOTS];
};
/*
* This struct is used to store some machine check info from lowcore
* for machine checks that happen while the guest is running.
* This info in host's lowcore might be overwritten by a second machine
* check from host when host is in the machine check's high-level handling.
* The size is 24 bytes.
*/
struct mcck_volatile_info {
__u64 mcic;
__u64 failing_storage_address;
__u32 ext_damage_code;
__u32 reserved;
};
#define CR0_INITIAL_MASK (CR0_UNUSED_56 | CR0_INTERRUPT_KEY_SUBMASK | \
CR0_MEASUREMENT_ALERT_SUBMASK)
#define CR14_INITIAL_MASK (CR14_UNUSED_32 | CR14_UNUSED_33 | \
CR14_EXTERNAL_DAMAGE_SUBMASK)
#define SIDAD_SIZE_MASK 0xff
#define sida_addr(sie_block) phys_to_virt((sie_block)->sidad & PAGE_MASK)
#define sida_size(sie_block) \
((((sie_block)->sidad & SIDAD_SIZE_MASK) + 1) * PAGE_SIZE)
#define CPUSTAT_STOPPED 0x80000000
#define CPUSTAT_WAIT 0x10000000
#define CPUSTAT_ECALL_PEND 0x08000000
#define CPUSTAT_STOP_INT 0x04000000
#define CPUSTAT_IO_INT 0x02000000
#define CPUSTAT_EXT_INT 0x01000000
#define CPUSTAT_RUNNING 0x00800000
#define CPUSTAT_RETAINED 0x00400000
#define CPUSTAT_TIMING_SUB 0x00020000
#define CPUSTAT_SIE_SUB 0x00010000
#define CPUSTAT_RRF 0x00008000
#define CPUSTAT_SLSV 0x00004000
#define CPUSTAT_SLSR 0x00002000
#define CPUSTAT_ZARCH 0x00000800
#define CPUSTAT_MCDS 0x00000100
#define CPUSTAT_KSS 0x00000200
#define CPUSTAT_SM 0x00000080
#define CPUSTAT_IBS 0x00000040
#define CPUSTAT_GED2 0x00000010
#define CPUSTAT_G 0x00000008
#define CPUSTAT_GED 0x00000004
#define CPUSTAT_J 0x00000002
#define CPUSTAT_P 0x00000001
struct kvm_s390_sie_block {
atomic_t cpuflags; /* 0x0000 */
__u32 : 1; /* 0x0004 */
__u32 prefix : 18;
__u32 : 1;
__u32 ibc : 12;
__u8 reserved08[4]; /* 0x0008 */
#define PROG_IN_SIE (1<<0)
__u32 prog0c; /* 0x000c */
union {
__u8 reserved10[16]; /* 0x0010 */
struct {
__u64 pv_handle_cpu;
__u64 pv_handle_config;
};
};
#define PROG_BLOCK_SIE (1<<0)
#define PROG_REQUEST (1<<1)
atomic_t prog20; /* 0x0020 */
__u8 reserved24[4]; /* 0x0024 */
__u64 cputm; /* 0x0028 */
__u64 ckc; /* 0x0030 */
__u64 epoch; /* 0x0038 */
__u32 svcc; /* 0x0040 */
#define LCTL_CR0 0x8000
#define LCTL_CR6 0x0200
#define LCTL_CR9 0x0040
#define LCTL_CR10 0x0020
#define LCTL_CR11 0x0010
#define LCTL_CR14 0x0002
__u16 lctl; /* 0x0044 */
__s16 icpua; /* 0x0046 */
#define ICTL_OPEREXC 0x80000000
#define ICTL_PINT 0x20000000
#define ICTL_LPSW 0x00400000
#define ICTL_STCTL 0x00040000
#define ICTL_ISKE 0x00004000
#define ICTL_SSKE 0x00002000
#define ICTL_RRBE 0x00001000
#define ICTL_TPROT 0x00000200
__u32 ictl; /* 0x0048 */
#define ECA_CEI 0x80000000
#define ECA_IB 0x40000000
#define ECA_SIGPI 0x10000000
#define ECA_MVPGI 0x01000000
#define ECA_AIV 0x00200000
#define ECA_VX 0x00020000
#define ECA_PROTEXCI 0x00002000
#define ECA_APIE 0x00000008
#define ECA_SII 0x00000001
__u32 eca; /* 0x004c */
#define ICPT_INST 0x04
#define ICPT_PROGI 0x08
#define ICPT_INSTPROGI 0x0C
#define ICPT_EXTREQ 0x10
#define ICPT_EXTINT 0x14
#define ICPT_IOREQ 0x18
#define ICPT_WAIT 0x1c
#define ICPT_VALIDITY 0x20
#define ICPT_STOP 0x28
#define ICPT_OPEREXC 0x2C
#define ICPT_PARTEXEC 0x38
#define ICPT_IOINST 0x40
#define ICPT_KSS 0x5c
#define ICPT_MCHKREQ 0x60
#define ICPT_INT_ENABLE 0x64
#define ICPT_PV_INSTR 0x68
#define ICPT_PV_NOTIFY 0x6c
#define ICPT_PV_PREF 0x70
__u8 icptcode; /* 0x0050 */
__u8 icptstatus; /* 0x0051 */
__u16 ihcpu; /* 0x0052 */
__u8 reserved54; /* 0x0054 */
#define IICTL_CODE_NONE 0x00
#define IICTL_CODE_MCHK 0x01
#define IICTL_CODE_EXT 0x02
#define IICTL_CODE_IO 0x03
#define IICTL_CODE_RESTART 0x04
#define IICTL_CODE_SPECIFICATION 0x10
#define IICTL_CODE_OPERAND 0x11
__u8 iictl; /* 0x0055 */
__u16 ipa; /* 0x0056 */
__u32 ipb; /* 0x0058 */
__u32 scaoh; /* 0x005c */
#define FPF_BPBC 0x20
__u8 fpf; /* 0x0060 */
#define ECB_GS 0x40
#define ECB_TE 0x10
#define ECB_SPECI 0x08
#define ECB_SRSI 0x04
#define ECB_HOSTPROTINT 0x02
#define ECB_PTF 0x01
__u8 ecb; /* 0x0061 */
#define ECB2_CMMA 0x80
#define ECB2_IEP 0x20
#define ECB2_PFMFI 0x08
#define ECB2_ESCA 0x04
#define ECB2_ZPCI_LSI 0x02
__u8 ecb2; /* 0x0062 */
#define ECB3_AISI 0x20
#define ECB3_AISII 0x10
#define ECB3_DEA 0x08
#define ECB3_AES 0x04
#define ECB3_RI 0x01
__u8 ecb3; /* 0x0063 */
#define ESCA_SCAOL_MASK ~0x3fU
__u32 scaol; /* 0x0064 */
__u8 sdf; /* 0x0068 */
__u8 epdx; /* 0x0069 */
__u8 cpnc; /* 0x006a */
__u8 reserved6b; /* 0x006b */
__u32 todpr; /* 0x006c */
#define GISA_FORMAT1 0x00000001
__u32 gd; /* 0x0070 */
__u8 reserved74[12]; /* 0x0074 */
__u64 mso; /* 0x0080 */
__u64 msl; /* 0x0088 */
psw_t gpsw; /* 0x0090 */
__u64 gg14; /* 0x00a0 */
__u64 gg15; /* 0x00a8 */
__u8 reservedb0[8]; /* 0x00b0 */
#define HPID_KVM 0x4
#define HPID_VSIE 0x5
__u8 hpid; /* 0x00b8 */
__u8 reservedb9[7]; /* 0x00b9 */
union {
struct {
__u32 eiparams; /* 0x00c0 */
__u16 extcpuaddr; /* 0x00c4 */
__u16 eic; /* 0x00c6 */
};
__u64 mcic; /* 0x00c0 */
} __packed;
__u32 reservedc8; /* 0x00c8 */
union {
struct {
__u16 pgmilc; /* 0x00cc */
__u16 iprcc; /* 0x00ce */
};
__u32 edc; /* 0x00cc */
} __packed;
union {
struct {
__u32 dxc; /* 0x00d0 */
__u16 mcn; /* 0x00d4 */
__u8 perc; /* 0x00d6 */
__u8 peratmid; /* 0x00d7 */
};
__u64 faddr; /* 0x00d0 */
} __packed;
__u64 peraddr; /* 0x00d8 */
__u8 eai; /* 0x00e0 */
__u8 peraid; /* 0x00e1 */
__u8 oai; /* 0x00e2 */
__u8 armid; /* 0x00e3 */
__u8 reservede4[4]; /* 0x00e4 */
union {
__u64 tecmc; /* 0x00e8 */
struct {
__u16 subchannel_id; /* 0x00e8 */
__u16 subchannel_nr; /* 0x00ea */
__u32 io_int_parm; /* 0x00ec */
__u32 io_int_word; /* 0x00f0 */
};
} __packed;
__u8 reservedf4[8]; /* 0x00f4 */
#define CRYCB_FORMAT_MASK 0x00000003
#define CRYCB_FORMAT0 0x00000000
#define CRYCB_FORMAT1 0x00000001
#define CRYCB_FORMAT2 0x00000003
__u32 crycbd; /* 0x00fc */
__u64 gcr[16]; /* 0x0100 */
union {
__u64 gbea; /* 0x0180 */
__u64 sidad;
};
__u8 reserved188[8]; /* 0x0188 */
__u64 sdnxo; /* 0x0190 */
__u8 reserved198[8]; /* 0x0198 */
__u32 fac; /* 0x01a0 */
__u8 reserved1a4[20]; /* 0x01a4 */
__u64 cbrlo; /* 0x01b8 */
__u8 reserved1c0[8]; /* 0x01c0 */
#define ECD_HOSTREGMGMT 0x20000000
#define ECD_MEF 0x08000000
#define ECD_ETOKENF 0x02000000
#define ECD_ECC 0x00200000
__u32 ecd; /* 0x01c8 */
__u8 reserved1cc[18]; /* 0x01cc */
__u64 pp; /* 0x01de */
__u8 reserved1e6[2]; /* 0x01e6 */
__u64 itdba; /* 0x01e8 */
__u64 riccbd; /* 0x01f0 */
__u64 gvrd; /* 0x01f8 */
} __packed __aligned(512);
struct kvm_s390_itdb {
__u8 data[256];
};
struct sie_page {
struct kvm_s390_sie_block sie_block;
struct mcck_volatile_info mcck_info; /* 0x0200 */
__u8 reserved218[360]; /* 0x0218 */
__u64 pv_grregs[16]; /* 0x0380 */
__u8 reserved400[512]; /* 0x0400 */
struct kvm_s390_itdb itdb; /* 0x0600 */
__u8 reserved700[2304]; /* 0x0700 */
};
struct kvm_vcpu_stat {
struct kvm_vcpu_stat_generic generic;
u64 exit_userspace;
u64 exit_null;
u64 exit_external_request;
u64 exit_io_request;
u64 exit_external_interrupt;
u64 exit_stop_request;
u64 exit_validity;
u64 exit_instruction;
u64 exit_pei;
u64 halt_no_poll_steal;
u64 instruction_lctl;
u64 instruction_lctlg;
u64 instruction_stctl;
u64 instruction_stctg;
u64 exit_program_interruption;
u64 exit_instr_and_program;
u64 exit_operation_exception;
u64 deliver_ckc;
u64 deliver_cputm;
u64 deliver_external_call;
u64 deliver_emergency_signal;
u64 deliver_service_signal;
u64 deliver_virtio;
u64 deliver_stop_signal;
u64 deliver_prefix_signal;
u64 deliver_restart_signal;
u64 deliver_program;
u64 deliver_io;
u64 deliver_machine_check;
u64 exit_wait_state;
u64 inject_ckc;
u64 inject_cputm;
u64 inject_external_call;
u64 inject_emergency_signal;
u64 inject_mchk;
u64 inject_pfault_init;
u64 inject_program;
u64 inject_restart;
u64 inject_set_prefix;
u64 inject_stop_signal;
u64 instruction_epsw;
u64 instruction_gs;
u64 instruction_io_other;
u64 instruction_lpsw;
u64 instruction_lpswe;
u64 instruction_pfmf;
u64 instruction_ptff;
u64 instruction_sck;
u64 instruction_sckpf;
u64 instruction_stidp;
u64 instruction_spx;
u64 instruction_stpx;
u64 instruction_stap;
u64 instruction_iske;
u64 instruction_ri;
u64 instruction_rrbe;
u64 instruction_sske;
u64 instruction_ipte_interlock;
u64 instruction_stsi;
u64 instruction_stfl;
u64 instruction_tb;
u64 instruction_tpi;
u64 instruction_tprot;
u64 instruction_tsch;
u64 instruction_sie;
u64 instruction_essa;
u64 instruction_sthyi;
u64 instruction_sigp_sense;
u64 instruction_sigp_sense_running;
u64 instruction_sigp_external_call;
u64 instruction_sigp_emergency;
u64 instruction_sigp_cond_emergency;
u64 instruction_sigp_start;
u64 instruction_sigp_stop;
u64 instruction_sigp_stop_store_status;
u64 instruction_sigp_store_status;
u64 instruction_sigp_store_adtl_status;
u64 instruction_sigp_arch;
u64 instruction_sigp_prefix;
u64 instruction_sigp_restart;
u64 instruction_sigp_init_cpu_reset;
u64 instruction_sigp_cpu_reset;
u64 instruction_sigp_unknown;
u64 instruction_diagnose_10;
u64 instruction_diagnose_44;
u64 instruction_diagnose_9c;
u64 diag_9c_ignored;
u64 diag_9c_forward;
u64 instruction_diagnose_258;
u64 instruction_diagnose_308;
u64 instruction_diagnose_500;
u64 instruction_diagnose_other;
u64 pfault_sync;
};
#define PGM_OPERATION 0x01
#define PGM_PRIVILEGED_OP 0x02
#define PGM_EXECUTE 0x03
#define PGM_PROTECTION 0x04
#define PGM_ADDRESSING 0x05
#define PGM_SPECIFICATION 0x06
#define PGM_DATA 0x07
#define PGM_FIXED_POINT_OVERFLOW 0x08
#define PGM_FIXED_POINT_DIVIDE 0x09
#define PGM_DECIMAL_OVERFLOW 0x0a
#define PGM_DECIMAL_DIVIDE 0x0b
#define PGM_HFP_EXPONENT_OVERFLOW 0x0c
#define PGM_HFP_EXPONENT_UNDERFLOW 0x0d
#define PGM_HFP_SIGNIFICANCE 0x0e
#define PGM_HFP_DIVIDE 0x0f
#define PGM_SEGMENT_TRANSLATION 0x10
#define PGM_PAGE_TRANSLATION 0x11
#define PGM_TRANSLATION_SPEC 0x12
#define PGM_SPECIAL_OPERATION 0x13
#define PGM_OPERAND 0x15
#define PGM_TRACE_TABEL 0x16
#define PGM_VECTOR_PROCESSING 0x1b
#define PGM_SPACE_SWITCH 0x1c
#define PGM_HFP_SQUARE_ROOT 0x1d
#define PGM_PC_TRANSLATION_SPEC 0x1f
#define PGM_AFX_TRANSLATION 0x20
#define PGM_ASX_TRANSLATION 0x21
#define PGM_LX_TRANSLATION 0x22
#define PGM_EX_TRANSLATION 0x23
#define PGM_PRIMARY_AUTHORITY 0x24
#define PGM_SECONDARY_AUTHORITY 0x25
#define PGM_LFX_TRANSLATION 0x26
#define PGM_LSX_TRANSLATION 0x27
#define PGM_ALET_SPECIFICATION 0x28
#define PGM_ALEN_TRANSLATION 0x29
#define PGM_ALE_SEQUENCE 0x2a
#define PGM_ASTE_VALIDITY 0x2b
#define PGM_ASTE_SEQUENCE 0x2c
#define PGM_EXTENDED_AUTHORITY 0x2d
#define PGM_LSTE_SEQUENCE 0x2e
#define PGM_ASTE_INSTANCE 0x2f
#define PGM_STACK_FULL 0x30
#define PGM_STACK_EMPTY 0x31
#define PGM_STACK_SPECIFICATION 0x32
#define PGM_STACK_TYPE 0x33
#define PGM_STACK_OPERATION 0x34
#define PGM_ASCE_TYPE 0x38
#define PGM_REGION_FIRST_TRANS 0x39
#define PGM_REGION_SECOND_TRANS 0x3a
#define PGM_REGION_THIRD_TRANS 0x3b
#define PGM_MONITOR 0x40
#define PGM_PER 0x80
#define PGM_CRYPTO_OPERATION 0x119
/* irq types in ascend order of priorities */
enum irq_types {
IRQ_PEND_SET_PREFIX = 0,
IRQ_PEND_RESTART,
IRQ_PEND_SIGP_STOP,
IRQ_PEND_IO_ISC_7,
IRQ_PEND_IO_ISC_6,
IRQ_PEND_IO_ISC_5,
IRQ_PEND_IO_ISC_4,
IRQ_PEND_IO_ISC_3,
IRQ_PEND_IO_ISC_2,
IRQ_PEND_IO_ISC_1,
IRQ_PEND_IO_ISC_0,
IRQ_PEND_VIRTIO,
IRQ_PEND_PFAULT_DONE,
IRQ_PEND_PFAULT_INIT,
IRQ_PEND_EXT_HOST,
IRQ_PEND_EXT_SERVICE,
IRQ_PEND_EXT_SERVICE_EV,
IRQ_PEND_EXT_TIMING,
IRQ_PEND_EXT_CPU_TIMER,
IRQ_PEND_EXT_CLOCK_COMP,
IRQ_PEND_EXT_EXTERNAL,
IRQ_PEND_EXT_EMERGENCY,
IRQ_PEND_EXT_MALFUNC,
IRQ_PEND_EXT_IRQ_KEY,
IRQ_PEND_MCHK_REP,
IRQ_PEND_PROG,
IRQ_PEND_SVC,
IRQ_PEND_MCHK_EX,
IRQ_PEND_COUNT
};
/* We have 2M for virtio device descriptor pages. Smallest amount of
* memory per page is 24 bytes (1 queue), so (2048*1024) / 24 = 87381
*/
#define KVM_S390_MAX_VIRTIO_IRQS 87381
/*
* Repressible (non-floating) machine check interrupts
* subclass bits in MCIC
*/
#define MCHK_EXTD_BIT 58
#define MCHK_DEGR_BIT 56
#define MCHK_WARN_BIT 55
#define MCHK_REP_MASK ((1UL << MCHK_DEGR_BIT) | \
(1UL << MCHK_EXTD_BIT) | \
(1UL << MCHK_WARN_BIT))
/* Exigent machine check interrupts subclass bits in MCIC */
#define MCHK_SD_BIT 63
#define MCHK_PD_BIT 62
#define MCHK_EX_MASK ((1UL << MCHK_SD_BIT) | (1UL << MCHK_PD_BIT))
#define IRQ_PEND_EXT_MASK ((1UL << IRQ_PEND_EXT_IRQ_KEY) | \
(1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
(1UL << IRQ_PEND_EXT_CPU_TIMER) | \
(1UL << IRQ_PEND_EXT_MALFUNC) | \
(1UL << IRQ_PEND_EXT_EMERGENCY) | \
(1UL << IRQ_PEND_EXT_EXTERNAL) | \
(1UL << IRQ_PEND_EXT_TIMING) | \
(1UL << IRQ_PEND_EXT_HOST) | \
(1UL << IRQ_PEND_EXT_SERVICE) | \
(1UL << IRQ_PEND_EXT_SERVICE_EV) | \
(1UL << IRQ_PEND_VIRTIO) | \
(1UL << IRQ_PEND_PFAULT_INIT) | \
(1UL << IRQ_PEND_PFAULT_DONE))
#define IRQ_PEND_IO_MASK ((1UL << IRQ_PEND_IO_ISC_0) | \
(1UL << IRQ_PEND_IO_ISC_1) | \
(1UL << IRQ_PEND_IO_ISC_2) | \
(1UL << IRQ_PEND_IO_ISC_3) | \
(1UL << IRQ_PEND_IO_ISC_4) | \
(1UL << IRQ_PEND_IO_ISC_5) | \
(1UL << IRQ_PEND_IO_ISC_6) | \
(1UL << IRQ_PEND_IO_ISC_7))
#define IRQ_PEND_MCHK_MASK ((1UL << IRQ_PEND_MCHK_REP) | \
(1UL << IRQ_PEND_MCHK_EX))
#define IRQ_PEND_EXT_II_MASK ((1UL << IRQ_PEND_EXT_CPU_TIMER) | \
(1UL << IRQ_PEND_EXT_CLOCK_COMP) | \
(1UL << IRQ_PEND_EXT_EMERGENCY) | \
(1UL << IRQ_PEND_EXT_EXTERNAL) | \
(1UL << IRQ_PEND_EXT_SERVICE) | \
(1UL << IRQ_PEND_EXT_SERVICE_EV))
struct kvm_s390_interrupt_info {
struct list_head list;
u64 type;
union {
struct kvm_s390_io_info io;
struct kvm_s390_ext_info ext;
struct kvm_s390_pgm_info pgm;
struct kvm_s390_emerg_info emerg;
struct kvm_s390_extcall_info extcall;
struct kvm_s390_prefix_info prefix;
struct kvm_s390_stop_info stop;
struct kvm_s390_mchk_info mchk;
};
};
struct kvm_s390_irq_payload {
struct kvm_s390_io_info io;
struct kvm_s390_ext_info ext;
struct kvm_s390_pgm_info pgm;
struct kvm_s390_emerg_info emerg;
struct kvm_s390_extcall_info extcall;
struct kvm_s390_prefix_info prefix;
struct kvm_s390_stop_info stop;
struct kvm_s390_mchk_info mchk;
};
struct kvm_s390_local_interrupt {
spinlock_t lock;
DECLARE_BITMAP(sigp_emerg_pending, KVM_MAX_VCPUS);
struct kvm_s390_irq_payload irq;
unsigned long pending_irqs;
};
#define FIRQ_LIST_IO_ISC_0 0
#define FIRQ_LIST_IO_ISC_1 1
#define FIRQ_LIST_IO_ISC_2 2
#define FIRQ_LIST_IO_ISC_3 3
#define FIRQ_LIST_IO_ISC_4 4
#define FIRQ_LIST_IO_ISC_5 5
#define FIRQ_LIST_IO_ISC_6 6
#define FIRQ_LIST_IO_ISC_7 7
#define FIRQ_LIST_PFAULT 8
#define FIRQ_LIST_VIRTIO 9
#define FIRQ_LIST_COUNT 10
#define FIRQ_CNTR_IO 0
#define FIRQ_CNTR_SERVICE 1
#define FIRQ_CNTR_VIRTIO 2
#define FIRQ_CNTR_PFAULT 3
#define FIRQ_MAX_COUNT 4
/* mask the AIS mode for a given ISC */
#define AIS_MODE_MASK(isc) (0x80 >> isc)
#define KVM_S390_AIS_MODE_ALL 0
#define KVM_S390_AIS_MODE_SINGLE 1
struct kvm_s390_float_interrupt {
unsigned long pending_irqs;
unsigned long masked_irqs;
spinlock_t lock;
struct list_head lists[FIRQ_LIST_COUNT];
int counters[FIRQ_MAX_COUNT];
struct kvm_s390_mchk_info mchk;
struct kvm_s390_ext_info srv_signal;
int next_rr_cpu;
struct mutex ais_lock;
u8 simm;
u8 nimm;
};
struct kvm_hw_wp_info_arch {
unsigned long addr;
unsigned long phys_addr;
int len;
char *old_data;
};
struct kvm_hw_bp_info_arch {
unsigned long addr;
int len;
};
/*
* Only the upper 16 bits of kvm_guest_debug->control are arch specific.
* Further KVM_GUESTDBG flags which an be used from userspace can be found in
* arch/s390/include/uapi/asm/kvm.h
*/
#define KVM_GUESTDBG_EXIT_PENDING 0x10000000
#define guestdbg_enabled(vcpu) \
(vcpu->guest_debug & KVM_GUESTDBG_ENABLE)
#define guestdbg_sstep_enabled(vcpu) \
(vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
#define guestdbg_hw_bp_enabled(vcpu) \
(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
#define guestdbg_exit_pending(vcpu) (guestdbg_enabled(vcpu) && \
(vcpu->guest_debug & KVM_GUESTDBG_EXIT_PENDING))
#define KVM_GUESTDBG_VALID_MASK \
(KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP |\
KVM_GUESTDBG_USE_HW_BP | KVM_GUESTDBG_EXIT_PENDING)
struct kvm_guestdbg_info_arch {
unsigned long cr0;
unsigned long cr9;
unsigned long cr10;
unsigned long cr11;
struct kvm_hw_bp_info_arch *hw_bp_info;
struct kvm_hw_wp_info_arch *hw_wp_info;
int nr_hw_bp;
int nr_hw_wp;
unsigned long last_bp;
};
struct kvm_s390_pv_vcpu {
u64 handle;
unsigned long stor_base;
};
struct kvm_vcpu_arch {
struct kvm_s390_sie_block *sie_block;
/* if vsie is active, currently executed shadow sie control block */
struct kvm_s390_sie_block *vsie_block;
unsigned int host_acrs[NUM_ACRS];
struct gs_cb *host_gscb;
struct fpu host_fpregs;
struct kvm_s390_local_interrupt local_int;
struct hrtimer ckc_timer;
struct kvm_s390_pgm_info pgm;
struct gmap *gmap;
/* backup location for the currently enabled gmap when scheduled out */
struct gmap *enabled_gmap;
struct kvm_guestdbg_info_arch guestdbg;
unsigned long pfault_token;
unsigned long pfault_select;
unsigned long pfault_compare;
bool cputm_enabled;
/*
* The seqcount protects updates to cputm_start and sie_block.cputm,
* this way we can have non-blocking reads with consistent values.
* Only the owning VCPU thread (vcpu->cpu) is allowed to change these
* values and to start/stop/enable/disable cpu timer accounting.
*/
seqcount_t cputm_seqcount;
__u64 cputm_start;
bool gs_enabled;
bool skey_enabled;
struct kvm_s390_pv_vcpu pv;
union diag318_info diag318_info;
};
struct kvm_vm_stat {
struct kvm_vm_stat_generic generic;
u64 inject_io;
u64 inject_float_mchk;
u64 inject_pfault_done;
u64 inject_service_signal;
u64 inject_virtio;
u64 aen_forward;
};
struct kvm_arch_memory_slot {
};
struct s390_map_info {
struct list_head list;
__u64 guest_addr;
__u64 addr;
struct page *page;
};
struct s390_io_adapter {
unsigned int id;
int isc;
bool maskable;
bool masked;
bool swap;
bool suppressible;
};
#define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
#define MAX_S390_ADAPTER_MAPS 256
/* maximum size of facilities and facility mask is 2k bytes */
#define S390_ARCH_FAC_LIST_SIZE_BYTE (1<<11)
#define S390_ARCH_FAC_LIST_SIZE_U64 \
(S390_ARCH_FAC_LIST_SIZE_BYTE / sizeof(u64))
#define S390_ARCH_FAC_MASK_SIZE_BYTE S390_ARCH_FAC_LIST_SIZE_BYTE
#define S390_ARCH_FAC_MASK_SIZE_U64 \
(S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64))
struct kvm_s390_cpu_model {
/* facility mask supported by kvm & hosting machine */
__u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64];
struct kvm_s390_vm_cpu_subfunc subfuncs;
/* facility list requested by guest (in dma page) */
__u64 *fac_list;
u64 cpuid;
unsigned short ibc;
/* subset of available UV-features for pv-guests enabled by user space */
struct kvm_s390_vm_cpu_uv_feat uv_feat_guest;
};
typedef int (*crypto_hook)(struct kvm_vcpu *vcpu);
struct kvm_s390_crypto {
struct kvm_s390_crypto_cb *crycb;
struct rw_semaphore pqap_hook_rwsem;
crypto_hook *pqap_hook;
__u32 crycbd;
__u8 aes_kw;
__u8 dea_kw;
__u8 apie;
};
#define APCB0_MASK_SIZE 1
struct kvm_s390_apcb0 {
__u64 apm[APCB0_MASK_SIZE]; /* 0x0000 */
__u64 aqm[APCB0_MASK_SIZE]; /* 0x0008 */
__u64 adm[APCB0_MASK_SIZE]; /* 0x0010 */
__u64 reserved18; /* 0x0018 */
};
#define APCB1_MASK_SIZE 4
struct kvm_s390_apcb1 {
__u64 apm[APCB1_MASK_SIZE]; /* 0x0000 */
__u64 aqm[APCB1_MASK_SIZE]; /* 0x0020 */
__u64 adm[APCB1_MASK_SIZE]; /* 0x0040 */
__u64 reserved60[4]; /* 0x0060 */
};
struct kvm_s390_crypto_cb {
struct kvm_s390_apcb0 apcb0; /* 0x0000 */
__u8 reserved20[0x0048 - 0x0020]; /* 0x0020 */
__u8 dea_wrapping_key_mask[24]; /* 0x0048 */
__u8 aes_wrapping_key_mask[32]; /* 0x0060 */
struct kvm_s390_apcb1 apcb1; /* 0x0080 */
};
struct kvm_s390_gisa {
union {
struct { /* common to all formats */
u32 next_alert;
u8 ipm;
u8 reserved01[2];
u8 iam;
};
struct { /* format 0 */
u32 next_alert;
u8 ipm;
u8 reserved01;
u8 : 6;
u8 g : 1;
u8 c : 1;
u8 iam;
u8 reserved02[4];
u32 airq_count;
} g0;
struct { /* format 1 */
u32 next_alert;
u8 ipm;
u8 simm;
u8 nimm;
u8 iam;
u8 aism[8];
u8 : 6;
u8 g : 1;
u8 c : 1;
u8 reserved03[11];
u32 airq_count;
} g1;
struct {
u64 word[4];
} u64;
};
};
struct kvm_s390_gib {
u32 alert_list_origin;
u32 reserved01;
u8:5;
u8 nisc:3;
u8 reserved03[3];
u32 reserved04[5];
};
/*
* sie_page2 has to be allocated as DMA because fac_list, crycb and
* gisa need 31bit addresses in the sie control block.
*/
struct sie_page2 {
__u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */
struct kvm_s390_crypto_cb crycb; /* 0x0800 */
struct kvm_s390_gisa gisa; /* 0x0900 */
struct kvm *kvm; /* 0x0920 */
u8 reserved928[0x1000 - 0x928]; /* 0x0928 */
};
struct kvm_s390_vsie {
struct mutex mutex;
struct radix_tree_root addr_to_page;
int page_count;
int next;
struct page *pages[KVM_MAX_VCPUS];
};
struct kvm_s390_gisa_iam {
u8 mask;
spinlock_t ref_lock;
u32 ref_count[MAX_ISC + 1];
};
struct kvm_s390_gisa_interrupt {
struct kvm_s390_gisa *origin;
struct kvm_s390_gisa_iam alert;
struct hrtimer timer;
u64 expires;
DECLARE_BITMAP(kicked_mask, KVM_MAX_VCPUS);
};
struct kvm_s390_pv {
u64 handle;
u64 guest_len;
unsigned long stor_base;
void *stor_var;
bool dumping;
void *set_aside;
struct list_head need_cleanup;
struct mmu_notifier mmu_notifier;
};
struct kvm_arch{
void *sca;
int use_esca;
rwlock_t sca_lock;
debug_info_t *dbf;
struct kvm_s390_float_interrupt float_int;
struct kvm_device *flic;
struct gmap *gmap;
unsigned long mem_limit;
int css_support;
int use_irqchip;
int use_cmma;
int use_pfmfi;
int use_skf;
int use_zpci_interp;
int user_cpu_state_ctrl;
int user_sigp;
int user_stsi;
int user_instr0;
struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
wait_queue_head_t ipte_wq;
int ipte_lock_count;
struct mutex ipte_mutex;
spinlock_t start_stop_lock;
struct sie_page2 *sie_page2;
struct kvm_s390_cpu_model model;
struct kvm_s390_crypto crypto;
struct kvm_s390_vsie vsie;
u8 epdx;
u64 epoch;
int migration_mode;
atomic64_t cmma_dirty_pages;
/* subset of available cpu features enabled by user space */
DECLARE_BITMAP(cpu_feat, KVM_S390_VM_CPU_FEAT_NR_BITS);
/* indexed by vcpu_idx */
DECLARE_BITMAP(idle_mask, KVM_MAX_VCPUS);
struct kvm_s390_gisa_interrupt gisa_int;
struct kvm_s390_pv pv;
struct list_head kzdev_list;
spinlock_t kzdev_list_lock;
};
#define KVM_HVA_ERR_BAD (-1UL)
#define KVM_HVA_ERR_RO_BAD (-2UL)
static inline bool kvm_is_error_hva(unsigned long addr)
{
return IS_ERR_VALUE(addr);
}
#define ASYNC_PF_PER_VCPU 64
struct kvm_arch_async_pf {
unsigned long pfault_token;
};
bool kvm_arch_can_dequeue_async_page_present(struct kvm_vcpu *vcpu);
void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
struct kvm_async_pf *work);
bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
struct kvm_async_pf *work);
void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
struct kvm_async_pf *work);
static inline void kvm_arch_async_page_present_queued(struct kvm_vcpu *vcpu) {}
void kvm_arch_crypto_clear_masks(struct kvm *kvm);
void kvm_arch_crypto_set_masks(struct kvm *kvm, unsigned long *apm,
unsigned long *aqm, unsigned long *adm);
int __sie64a(phys_addr_t sie_block_phys, struct kvm_s390_sie_block *sie_block, u64 *rsa);
static inline int sie64a(struct kvm_s390_sie_block *sie_block, u64 *rsa)
{
return __sie64a(virt_to_phys(sie_block), sie_block, rsa);
}
extern char sie_exit;
bool kvm_s390_pv_is_protected(struct kvm *kvm);
bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu);
extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
static inline void kvm_arch_free_memslot(struct kvm *kvm,
struct kvm_memory_slot *slot) {}
static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
static inline void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
struct kvm_memory_slot *slot) {}
static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
#define __KVM_HAVE_ARCH_VM_FREE
void kvm_arch_free_vm(struct kvm *kvm);
struct zpci_kvm_hook {
int (*kvm_register)(void *opaque, struct kvm *kvm);
void (*kvm_unregister)(void *opaque);
};
extern struct zpci_kvm_hook zpci_kvm_hook;
#endif