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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef __LINUX_KVM_S390_H
3#define __LINUX_KVM_S390_H
4/*
5 * KVM s390 specific structures and definitions
6 *
7 * Copyright IBM Corp. 2008, 2018
8 *
9 * Author(s): Carsten Otte <cotte@de.ibm.com>
10 * Christian Borntraeger <borntraeger@de.ibm.com>
11 */
12#include <linux/types.h>
13
14#define __KVM_S390
15#define __KVM_HAVE_GUEST_DEBUG
16
17/* Device control API: s390-specific devices */
18#define KVM_DEV_FLIC_GET_ALL_IRQS 1
19#define KVM_DEV_FLIC_ENQUEUE 2
20#define KVM_DEV_FLIC_CLEAR_IRQS 3
21#define KVM_DEV_FLIC_APF_ENABLE 4
22#define KVM_DEV_FLIC_APF_DISABLE_WAIT 5
23#define KVM_DEV_FLIC_ADAPTER_REGISTER 6
24#define KVM_DEV_FLIC_ADAPTER_MODIFY 7
25#define KVM_DEV_FLIC_CLEAR_IO_IRQ 8
26#define KVM_DEV_FLIC_AISM 9
27#define KVM_DEV_FLIC_AIRQ_INJECT 10
28#define KVM_DEV_FLIC_AISM_ALL 11
29/*
30 * We can have up to 4*64k pending subchannels + 8 adapter interrupts,
31 * as well as up to ASYNC_PF_PER_VCPU*KVM_MAX_VCPUS pfault done interrupts.
32 * There are also sclp and machine checks. This gives us
33 * sizeof(kvm_s390_irq)*(4*65536+8+64*64+1+1) = 72 * 266250 = 19170000
34 * Lets round up to 8192 pages.
35 */
36#define KVM_S390_MAX_FLOAT_IRQS 266250
37#define KVM_S390_FLIC_MAX_BUFFER 0x2000000
38
39struct kvm_s390_io_adapter {
40 __u32 id;
41 __u8 isc;
42 __u8 maskable;
43 __u8 swap;
44 __u8 flags;
45};
46
47#define KVM_S390_ADAPTER_SUPPRESSIBLE 0x01
48
49struct kvm_s390_ais_req {
50 __u8 isc;
51 __u16 mode;
52};
53
54struct kvm_s390_ais_all {
55 __u8 simm;
56 __u8 nimm;
57};
58
59#define KVM_S390_IO_ADAPTER_MASK 1
60#define KVM_S390_IO_ADAPTER_MAP 2
61#define KVM_S390_IO_ADAPTER_UNMAP 3
62
63struct kvm_s390_io_adapter_req {
64 __u32 id;
65 __u8 type;
66 __u8 mask;
67 __u16 pad0;
68 __u64 addr;
69};
70
71/* kvm attr_group on vm fd */
72#define KVM_S390_VM_MEM_CTRL 0
73#define KVM_S390_VM_TOD 1
74#define KVM_S390_VM_CRYPTO 2
75#define KVM_S390_VM_CPU_MODEL 3
76#define KVM_S390_VM_MIGRATION 4
77#define KVM_S390_VM_CPU_TOPOLOGY 5
78
79/* kvm attributes for mem_ctrl */
80#define KVM_S390_VM_MEM_ENABLE_CMMA 0
81#define KVM_S390_VM_MEM_CLR_CMMA 1
82#define KVM_S390_VM_MEM_LIMIT_SIZE 2
83
84#define KVM_S390_NO_MEM_LIMIT U64_MAX
85
86/* kvm attributes for KVM_S390_VM_TOD */
87#define KVM_S390_VM_TOD_LOW 0
88#define KVM_S390_VM_TOD_HIGH 1
89#define KVM_S390_VM_TOD_EXT 2
90
91struct kvm_s390_vm_tod_clock {
92 __u8 epoch_idx;
93 __u64 tod;
94};
95
96/* kvm attributes for KVM_S390_VM_CPU_MODEL */
97/* processor related attributes are r/w */
98#define KVM_S390_VM_CPU_PROCESSOR 0
99struct kvm_s390_vm_cpu_processor {
100 __u64 cpuid;
101 __u16 ibc;
102 __u8 pad[6];
103 __u64 fac_list[256];
104};
105
106/* machine related attributes are r/o */
107#define KVM_S390_VM_CPU_MACHINE 1
108struct kvm_s390_vm_cpu_machine {
109 __u64 cpuid;
110 __u32 ibc;
111 __u8 pad[4];
112 __u64 fac_mask[256];
113 __u64 fac_list[256];
114};
115
116#define KVM_S390_VM_CPU_PROCESSOR_FEAT 2
117#define KVM_S390_VM_CPU_MACHINE_FEAT 3
118
119#define KVM_S390_VM_CPU_FEAT_NR_BITS 1024
120#define KVM_S390_VM_CPU_FEAT_ESOP 0
121#define KVM_S390_VM_CPU_FEAT_SIEF2 1
122#define KVM_S390_VM_CPU_FEAT_64BSCAO 2
123#define KVM_S390_VM_CPU_FEAT_SIIF 3
124#define KVM_S390_VM_CPU_FEAT_GPERE 4
125#define KVM_S390_VM_CPU_FEAT_GSLS 5
126#define KVM_S390_VM_CPU_FEAT_IB 6
127#define KVM_S390_VM_CPU_FEAT_CEI 7
128#define KVM_S390_VM_CPU_FEAT_IBS 8
129#define KVM_S390_VM_CPU_FEAT_SKEY 9
130#define KVM_S390_VM_CPU_FEAT_CMMA 10
131#define KVM_S390_VM_CPU_FEAT_PFMFI 11
132#define KVM_S390_VM_CPU_FEAT_SIGPIF 12
133#define KVM_S390_VM_CPU_FEAT_KSS 13
134struct kvm_s390_vm_cpu_feat {
135 __u64 feat[16];
136};
137
138#define KVM_S390_VM_CPU_PROCESSOR_SUBFUNC 4
139#define KVM_S390_VM_CPU_MACHINE_SUBFUNC 5
140/* for "test bit" instructions MSB 0 bit ordering, for "query" raw blocks */
141struct kvm_s390_vm_cpu_subfunc {
142 __u8 plo[32]; /* always */
143 __u8 ptff[16]; /* with TOD-clock steering */
144 __u8 kmac[16]; /* with MSA */
145 __u8 kmc[16]; /* with MSA */
146 __u8 km[16]; /* with MSA */
147 __u8 kimd[16]; /* with MSA */
148 __u8 klmd[16]; /* with MSA */
149 __u8 pckmo[16]; /* with MSA3 */
150 __u8 kmctr[16]; /* with MSA4 */
151 __u8 kmf[16]; /* with MSA4 */
152 __u8 kmo[16]; /* with MSA4 */
153 __u8 pcc[16]; /* with MSA4 */
154 __u8 ppno[16]; /* with MSA5 */
155 __u8 kma[16]; /* with MSA8 */
156 __u8 kdsa[16]; /* with MSA9 */
157 __u8 sortl[32]; /* with STFLE.150 */
158 __u8 dfltcc[32]; /* with STFLE.151 */
159 __u8 reserved[1728];
160};
161
162/* kvm attributes for crypto */
163#define KVM_S390_VM_CRYPTO_ENABLE_AES_KW 0
164#define KVM_S390_VM_CRYPTO_ENABLE_DEA_KW 1
165#define KVM_S390_VM_CRYPTO_DISABLE_AES_KW 2
166#define KVM_S390_VM_CRYPTO_DISABLE_DEA_KW 3
167#define KVM_S390_VM_CRYPTO_ENABLE_APIE 4
168#define KVM_S390_VM_CRYPTO_DISABLE_APIE 5
169
170/* kvm attributes for migration mode */
171#define KVM_S390_VM_MIGRATION_STOP 0
172#define KVM_S390_VM_MIGRATION_START 1
173#define KVM_S390_VM_MIGRATION_STATUS 2
174
175/* for KVM_GET_REGS and KVM_SET_REGS */
176struct kvm_regs {
177 /* general purpose regs for s390 */
178 __u64 gprs[16];
179};
180
181/* for KVM_GET_SREGS and KVM_SET_SREGS */
182struct kvm_sregs {
183 __u32 acrs[16];
184 __u64 crs[16];
185};
186
187/* for KVM_GET_FPU and KVM_SET_FPU */
188struct kvm_fpu {
189 __u32 fpc;
190 __u64 fprs[16];
191};
192
193#define KVM_GUESTDBG_USE_HW_BP 0x00010000
194
195#define KVM_HW_BP 1
196#define KVM_HW_WP_WRITE 2
197#define KVM_SINGLESTEP 4
198
199struct kvm_debug_exit_arch {
200 __u64 addr;
201 __u8 type;
202 __u8 pad[7]; /* Should be set to 0 */
203};
204
205struct kvm_hw_breakpoint {
206 __u64 addr;
207 __u64 phys_addr;
208 __u64 len;
209 __u8 type;
210 __u8 pad[7]; /* Should be set to 0 */
211};
212
213/* for KVM_SET_GUEST_DEBUG */
214struct kvm_guest_debug_arch {
215 __u32 nr_hw_bp;
216 __u32 pad; /* Should be set to 0 */
217 struct kvm_hw_breakpoint __user *hw_bp;
218};
219
220/* for KVM_SYNC_PFAULT and KVM_REG_S390_PFTOKEN */
221#define KVM_S390_PFAULT_TOKEN_INVALID 0xffffffffffffffffULL
222
223#define KVM_SYNC_PREFIX (1UL << 0)
224#define KVM_SYNC_GPRS (1UL << 1)
225#define KVM_SYNC_ACRS (1UL << 2)
226#define KVM_SYNC_CRS (1UL << 3)
227#define KVM_SYNC_ARCH0 (1UL << 4)
228#define KVM_SYNC_PFAULT (1UL << 5)
229#define KVM_SYNC_VRS (1UL << 6)
230#define KVM_SYNC_RICCB (1UL << 7)
231#define KVM_SYNC_FPRS (1UL << 8)
232#define KVM_SYNC_GSCB (1UL << 9)
233#define KVM_SYNC_BPBC (1UL << 10)
234#define KVM_SYNC_ETOKEN (1UL << 11)
235#define KVM_SYNC_DIAG318 (1UL << 12)
236
237#define KVM_SYNC_S390_VALID_FIELDS \
238 (KVM_SYNC_PREFIX | KVM_SYNC_GPRS | KVM_SYNC_ACRS | KVM_SYNC_CRS | \
239 KVM_SYNC_ARCH0 | KVM_SYNC_PFAULT | KVM_SYNC_VRS | KVM_SYNC_RICCB | \
240 KVM_SYNC_FPRS | KVM_SYNC_GSCB | KVM_SYNC_BPBC | KVM_SYNC_ETOKEN | \
241 KVM_SYNC_DIAG318)
242
243/* length and alignment of the sdnx as a power of two */
244#define SDNXC 8
245#define SDNXL (1UL << SDNXC)
246/* definition of registers in kvm_run */
247struct kvm_sync_regs {
248 __u64 prefix; /* prefix register */
249 __u64 gprs[16]; /* general purpose registers */
250 __u32 acrs[16]; /* access registers */
251 __u64 crs[16]; /* control registers */
252 __u64 todpr; /* tod programmable register [ARCH0] */
253 __u64 cputm; /* cpu timer [ARCH0] */
254 __u64 ckc; /* clock comparator [ARCH0] */
255 __u64 pp; /* program parameter [ARCH0] */
256 __u64 gbea; /* guest breaking-event address [ARCH0] */
257 __u64 pft; /* pfault token [PFAULT] */
258 __u64 pfs; /* pfault select [PFAULT] */
259 __u64 pfc; /* pfault compare [PFAULT] */
260 union {
261 __u64 vrs[32][2]; /* vector registers (KVM_SYNC_VRS) */
262 __u64 fprs[16]; /* fp registers (KVM_SYNC_FPRS) */
263 };
264 __u8 reserved[512]; /* for future vector expansion */
265 __u32 fpc; /* valid on KVM_SYNC_VRS or KVM_SYNC_FPRS */
266 __u8 bpbc : 1; /* bp mode */
267 __u8 reserved2 : 7;
268 __u8 padding1[51]; /* riccb needs to be 64byte aligned */
269 __u8 riccb[64]; /* runtime instrumentation controls block */
270 __u64 diag318; /* diagnose 0x318 info */
271 __u8 padding2[184]; /* sdnx needs to be 256byte aligned */
272 union {
273 __u8 sdnx[SDNXL]; /* state description annex */
274 struct {
275 __u64 reserved1[2];
276 __u64 gscb[4];
277 __u64 etoken;
278 __u64 etoken_extension;
279 };
280 };
281};
282
283#define KVM_REG_S390_TODPR (KVM_REG_S390 | KVM_REG_SIZE_U32 | 0x1)
284#define KVM_REG_S390_EPOCHDIFF (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x2)
285#define KVM_REG_S390_CPU_TIMER (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x3)
286#define KVM_REG_S390_CLOCK_COMP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x4)
287#define KVM_REG_S390_PFTOKEN (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x5)
288#define KVM_REG_S390_PFCOMPARE (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x6)
289#define KVM_REG_S390_PFSELECT (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x7)
290#define KVM_REG_S390_PP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x8)
291#define KVM_REG_S390_GBEA (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x9)
292#endif