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DIAGNOSE 0x318 (diag318) sets information regarding the environment the VM is running in (Linux, z/VM, etc) and is observed via firmware/service events. This is a privileged s390x instruction that must be intercepted by SIE. Userspace handles the instruction as well as migration. Data is communicated via VCPU register synchronization. The Control Program Name Code (CPNC) is stored in the SIE block. The CPNC along with the Control Program Version Code (CPVC) are stored in the kvm_vcpu_arch struct. This data is reset on load normal and clear resets. Signed-off-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Link: https://lore.kernel.org/r/20200622154636.5499-3-walling@linux.ibm.com [borntraeger@de.ibm.com: fix sync_reg position] Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
292 lines
8.1 KiB
C
292 lines
8.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef __LINUX_KVM_S390_H
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#define __LINUX_KVM_S390_H
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/*
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* KVM s390 specific structures and definitions
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*
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* Copyright IBM Corp. 2008, 2018
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*
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* Author(s): Carsten Otte <cotte@de.ibm.com>
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* Christian Borntraeger <borntraeger@de.ibm.com>
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*/
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#include <linux/types.h>
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#define __KVM_S390
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#define __KVM_HAVE_GUEST_DEBUG
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/* Device control API: s390-specific devices */
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#define KVM_DEV_FLIC_GET_ALL_IRQS 1
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#define KVM_DEV_FLIC_ENQUEUE 2
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#define KVM_DEV_FLIC_CLEAR_IRQS 3
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#define KVM_DEV_FLIC_APF_ENABLE 4
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#define KVM_DEV_FLIC_APF_DISABLE_WAIT 5
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#define KVM_DEV_FLIC_ADAPTER_REGISTER 6
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#define KVM_DEV_FLIC_ADAPTER_MODIFY 7
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#define KVM_DEV_FLIC_CLEAR_IO_IRQ 8
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#define KVM_DEV_FLIC_AISM 9
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#define KVM_DEV_FLIC_AIRQ_INJECT 10
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#define KVM_DEV_FLIC_AISM_ALL 11
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/*
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* We can have up to 4*64k pending subchannels + 8 adapter interrupts,
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* as well as up to ASYNC_PF_PER_VCPU*KVM_MAX_VCPUS pfault done interrupts.
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* There are also sclp and machine checks. This gives us
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* sizeof(kvm_s390_irq)*(4*65536+8+64*64+1+1) = 72 * 266250 = 19170000
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* Lets round up to 8192 pages.
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*/
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#define KVM_S390_MAX_FLOAT_IRQS 266250
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#define KVM_S390_FLIC_MAX_BUFFER 0x2000000
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struct kvm_s390_io_adapter {
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__u32 id;
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__u8 isc;
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__u8 maskable;
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__u8 swap;
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__u8 flags;
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};
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#define KVM_S390_ADAPTER_SUPPRESSIBLE 0x01
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struct kvm_s390_ais_req {
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__u8 isc;
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__u16 mode;
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};
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struct kvm_s390_ais_all {
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__u8 simm;
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__u8 nimm;
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};
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#define KVM_S390_IO_ADAPTER_MASK 1
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#define KVM_S390_IO_ADAPTER_MAP 2
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#define KVM_S390_IO_ADAPTER_UNMAP 3
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struct kvm_s390_io_adapter_req {
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__u32 id;
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__u8 type;
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__u8 mask;
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__u16 pad0;
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__u64 addr;
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};
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/* kvm attr_group on vm fd */
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#define KVM_S390_VM_MEM_CTRL 0
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#define KVM_S390_VM_TOD 1
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#define KVM_S390_VM_CRYPTO 2
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#define KVM_S390_VM_CPU_MODEL 3
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#define KVM_S390_VM_MIGRATION 4
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/* kvm attributes for mem_ctrl */
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#define KVM_S390_VM_MEM_ENABLE_CMMA 0
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#define KVM_S390_VM_MEM_CLR_CMMA 1
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#define KVM_S390_VM_MEM_LIMIT_SIZE 2
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#define KVM_S390_NO_MEM_LIMIT U64_MAX
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/* kvm attributes for KVM_S390_VM_TOD */
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#define KVM_S390_VM_TOD_LOW 0
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#define KVM_S390_VM_TOD_HIGH 1
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#define KVM_S390_VM_TOD_EXT 2
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struct kvm_s390_vm_tod_clock {
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__u8 epoch_idx;
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__u64 tod;
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};
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/* kvm attributes for KVM_S390_VM_CPU_MODEL */
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/* processor related attributes are r/w */
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#define KVM_S390_VM_CPU_PROCESSOR 0
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struct kvm_s390_vm_cpu_processor {
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__u64 cpuid;
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__u16 ibc;
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__u8 pad[6];
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__u64 fac_list[256];
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};
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/* machine related attributes are r/o */
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#define KVM_S390_VM_CPU_MACHINE 1
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struct kvm_s390_vm_cpu_machine {
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__u64 cpuid;
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__u32 ibc;
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__u8 pad[4];
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__u64 fac_mask[256];
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__u64 fac_list[256];
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};
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#define KVM_S390_VM_CPU_PROCESSOR_FEAT 2
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#define KVM_S390_VM_CPU_MACHINE_FEAT 3
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#define KVM_S390_VM_CPU_FEAT_NR_BITS 1024
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#define KVM_S390_VM_CPU_FEAT_ESOP 0
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#define KVM_S390_VM_CPU_FEAT_SIEF2 1
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#define KVM_S390_VM_CPU_FEAT_64BSCAO 2
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#define KVM_S390_VM_CPU_FEAT_SIIF 3
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#define KVM_S390_VM_CPU_FEAT_GPERE 4
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#define KVM_S390_VM_CPU_FEAT_GSLS 5
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#define KVM_S390_VM_CPU_FEAT_IB 6
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#define KVM_S390_VM_CPU_FEAT_CEI 7
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#define KVM_S390_VM_CPU_FEAT_IBS 8
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#define KVM_S390_VM_CPU_FEAT_SKEY 9
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#define KVM_S390_VM_CPU_FEAT_CMMA 10
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#define KVM_S390_VM_CPU_FEAT_PFMFI 11
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#define KVM_S390_VM_CPU_FEAT_SIGPIF 12
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#define KVM_S390_VM_CPU_FEAT_KSS 13
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struct kvm_s390_vm_cpu_feat {
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__u64 feat[16];
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};
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#define KVM_S390_VM_CPU_PROCESSOR_SUBFUNC 4
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#define KVM_S390_VM_CPU_MACHINE_SUBFUNC 5
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/* for "test bit" instructions MSB 0 bit ordering, for "query" raw blocks */
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struct kvm_s390_vm_cpu_subfunc {
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__u8 plo[32]; /* always */
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__u8 ptff[16]; /* with TOD-clock steering */
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__u8 kmac[16]; /* with MSA */
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__u8 kmc[16]; /* with MSA */
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__u8 km[16]; /* with MSA */
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__u8 kimd[16]; /* with MSA */
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__u8 klmd[16]; /* with MSA */
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__u8 pckmo[16]; /* with MSA3 */
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__u8 kmctr[16]; /* with MSA4 */
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__u8 kmf[16]; /* with MSA4 */
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__u8 kmo[16]; /* with MSA4 */
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__u8 pcc[16]; /* with MSA4 */
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__u8 ppno[16]; /* with MSA5 */
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__u8 kma[16]; /* with MSA8 */
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__u8 kdsa[16]; /* with MSA9 */
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__u8 sortl[32]; /* with STFLE.150 */
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__u8 dfltcc[32]; /* with STFLE.151 */
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__u8 reserved[1728];
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};
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/* kvm attributes for crypto */
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#define KVM_S390_VM_CRYPTO_ENABLE_AES_KW 0
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#define KVM_S390_VM_CRYPTO_ENABLE_DEA_KW 1
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#define KVM_S390_VM_CRYPTO_DISABLE_AES_KW 2
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#define KVM_S390_VM_CRYPTO_DISABLE_DEA_KW 3
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#define KVM_S390_VM_CRYPTO_ENABLE_APIE 4
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#define KVM_S390_VM_CRYPTO_DISABLE_APIE 5
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/* kvm attributes for migration mode */
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#define KVM_S390_VM_MIGRATION_STOP 0
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#define KVM_S390_VM_MIGRATION_START 1
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#define KVM_S390_VM_MIGRATION_STATUS 2
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/* for KVM_GET_REGS and KVM_SET_REGS */
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struct kvm_regs {
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/* general purpose regs for s390 */
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__u64 gprs[16];
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};
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/* for KVM_GET_SREGS and KVM_SET_SREGS */
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struct kvm_sregs {
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__u32 acrs[16];
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__u64 crs[16];
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};
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/* for KVM_GET_FPU and KVM_SET_FPU */
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struct kvm_fpu {
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__u32 fpc;
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__u64 fprs[16];
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};
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#define KVM_GUESTDBG_USE_HW_BP 0x00010000
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#define KVM_HW_BP 1
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#define KVM_HW_WP_WRITE 2
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#define KVM_SINGLESTEP 4
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struct kvm_debug_exit_arch {
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__u64 addr;
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__u8 type;
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__u8 pad[7]; /* Should be set to 0 */
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};
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struct kvm_hw_breakpoint {
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__u64 addr;
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__u64 phys_addr;
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__u64 len;
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__u8 type;
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__u8 pad[7]; /* Should be set to 0 */
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};
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/* for KVM_SET_GUEST_DEBUG */
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struct kvm_guest_debug_arch {
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__u32 nr_hw_bp;
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__u32 pad; /* Should be set to 0 */
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struct kvm_hw_breakpoint __user *hw_bp;
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};
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/* for KVM_SYNC_PFAULT and KVM_REG_S390_PFTOKEN */
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#define KVM_S390_PFAULT_TOKEN_INVALID 0xffffffffffffffffULL
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#define KVM_SYNC_PREFIX (1UL << 0)
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#define KVM_SYNC_GPRS (1UL << 1)
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#define KVM_SYNC_ACRS (1UL << 2)
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#define KVM_SYNC_CRS (1UL << 3)
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#define KVM_SYNC_ARCH0 (1UL << 4)
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#define KVM_SYNC_PFAULT (1UL << 5)
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#define KVM_SYNC_VRS (1UL << 6)
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#define KVM_SYNC_RICCB (1UL << 7)
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#define KVM_SYNC_FPRS (1UL << 8)
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#define KVM_SYNC_GSCB (1UL << 9)
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#define KVM_SYNC_BPBC (1UL << 10)
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#define KVM_SYNC_ETOKEN (1UL << 11)
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#define KVM_SYNC_DIAG318 (1UL << 12)
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#define KVM_SYNC_S390_VALID_FIELDS \
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(KVM_SYNC_PREFIX | KVM_SYNC_GPRS | KVM_SYNC_ACRS | KVM_SYNC_CRS | \
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KVM_SYNC_ARCH0 | KVM_SYNC_PFAULT | KVM_SYNC_VRS | KVM_SYNC_RICCB | \
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KVM_SYNC_FPRS | KVM_SYNC_GSCB | KVM_SYNC_BPBC | KVM_SYNC_ETOKEN | \
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KVM_SYNC_DIAG318)
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/* length and alignment of the sdnx as a power of two */
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#define SDNXC 8
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#define SDNXL (1UL << SDNXC)
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/* definition of registers in kvm_run */
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struct kvm_sync_regs {
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__u64 prefix; /* prefix register */
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__u64 gprs[16]; /* general purpose registers */
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__u32 acrs[16]; /* access registers */
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__u64 crs[16]; /* control registers */
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__u64 todpr; /* tod programmable register [ARCH0] */
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__u64 cputm; /* cpu timer [ARCH0] */
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__u64 ckc; /* clock comparator [ARCH0] */
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__u64 pp; /* program parameter [ARCH0] */
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__u64 gbea; /* guest breaking-event address [ARCH0] */
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__u64 pft; /* pfault token [PFAULT] */
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__u64 pfs; /* pfault select [PFAULT] */
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__u64 pfc; /* pfault compare [PFAULT] */
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union {
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__u64 vrs[32][2]; /* vector registers (KVM_SYNC_VRS) */
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__u64 fprs[16]; /* fp registers (KVM_SYNC_FPRS) */
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};
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__u8 reserved[512]; /* for future vector expansion */
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__u32 fpc; /* valid on KVM_SYNC_VRS or KVM_SYNC_FPRS */
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__u8 bpbc : 1; /* bp mode */
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__u8 reserved2 : 7;
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__u8 padding1[51]; /* riccb needs to be 64byte aligned */
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__u8 riccb[64]; /* runtime instrumentation controls block */
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__u64 diag318; /* diagnose 0x318 info */
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__u8 padding2[184]; /* sdnx needs to be 256byte aligned */
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union {
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__u8 sdnx[SDNXL]; /* state description annex */
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struct {
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__u64 reserved1[2];
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__u64 gscb[4];
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__u64 etoken;
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__u64 etoken_extension;
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};
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};
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};
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#define KVM_REG_S390_TODPR (KVM_REG_S390 | KVM_REG_SIZE_U32 | 0x1)
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#define KVM_REG_S390_EPOCHDIFF (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x2)
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#define KVM_REG_S390_CPU_TIMER (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x3)
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#define KVM_REG_S390_CLOCK_COMP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x4)
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#define KVM_REG_S390_PFTOKEN (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x5)
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#define KVM_REG_S390_PFCOMPARE (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x6)
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#define KVM_REG_S390_PFSELECT (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x7)
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#define KVM_REG_S390_PP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x8)
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#define KVM_REG_S390_GBEA (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x9)
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#endif
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