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#define KVM_S390_VM_CPU_PROCESSOR_UV_FEAT_GUEST	6
163#define KVM_S390_VM_CPU_MACHINE_UV_FEAT_GUEST	7
164
165#define KVM_S390_VM_CPU_UV_FEAT_NR_BITS	64
166struct kvm_s390_vm_cpu_uv_feat {
167	union {
168		struct {
169			__u64 : 4;
170			__u64 ap : 1;		/* bit 4 */
171			__u64 ap_intr : 1;	/* bit 5 */
172			__u64 : 58;
173		};
174		__u64 feat;
175	};
176};
177
178/* kvm attributes for crypto */
179#define KVM_S390_VM_CRYPTO_ENABLE_AES_KW	0
180#define KVM_S390_VM_CRYPTO_ENABLE_DEA_KW	1
181#define KVM_S390_VM_CRYPTO_DISABLE_AES_KW	2
182#define KVM_S390_VM_CRYPTO_DISABLE_DEA_KW	3
183#define KVM_S390_VM_CRYPTO_ENABLE_APIE		4
184#define KVM_S390_VM_CRYPTO_DISABLE_APIE		5
185
186/* kvm attributes for migration mode */
187#define KVM_S390_VM_MIGRATION_STOP	0
188#define KVM_S390_VM_MIGRATION_START	1
189#define KVM_S390_VM_MIGRATION_STATUS	2
190
191/* for KVM_GET_REGS and KVM_SET_REGS */
192struct kvm_regs {
193	/* general purpose regs for s390 */
194	__u64 gprs[16];
195};
196
197/* for KVM_GET_SREGS and KVM_SET_SREGS */
198struct kvm_sregs {
199	__u32 acrs[16];
200	__u64 crs[16];
201};
202
203/* for KVM_GET_FPU and KVM_SET_FPU */
204struct kvm_fpu {
205	__u32 fpc;
206	__u64 fprs[16];
207};
208
209#define KVM_GUESTDBG_USE_HW_BP		0x00010000
210
211#define KVM_HW_BP			1
212#define KVM_HW_WP_WRITE			2
213#define KVM_SINGLESTEP			4
214
215struct kvm_debug_exit_arch {
216	__u64 addr;
217	__u8 type;
218	__u8 pad[7]; /* Should be set to 0 */
219};
220
221struct kvm_hw_breakpoint {
222	__u64 addr;
223	__u64 phys_addr;
224	__u64 len;
225	__u8 type;
226	__u8 pad[7]; /* Should be set to 0 */
227};
228
229/* for KVM_SET_GUEST_DEBUG */
230struct kvm_guest_debug_arch {
231	__u32 nr_hw_bp;
232	__u32 pad; /* Should be set to 0 */
233	struct kvm_hw_breakpoint __user *hw_bp;
234};
235
236/* for KVM_SYNC_PFAULT and KVM_REG_S390_PFTOKEN */
237#define KVM_S390_PFAULT_TOKEN_INVALID	0xffffffffffffffffULL
238
239#define KVM_SYNC_PREFIX (1UL << 0)
240#define KVM_SYNC_GPRS   (1UL << 1)
241#define KVM_SYNC_ACRS   (1UL << 2)
242#define KVM_SYNC_CRS    (1UL << 3)
243#define KVM_SYNC_ARCH0  (1UL << 4)
244#define KVM_SYNC_PFAULT (1UL << 5)
245#define KVM_SYNC_VRS    (1UL << 6)
246#define KVM_SYNC_RICCB  (1UL << 7)
247#define KVM_SYNC_FPRS   (1UL << 8)
248#define KVM_SYNC_GSCB   (1UL << 9)
249#define KVM_SYNC_BPBC   (1UL << 10)
250#define KVM_SYNC_ETOKEN (1UL << 11)
251#define KVM_SYNC_DIAG318 (1UL << 12)
252
253#define KVM_SYNC_S390_VALID_FIELDS \
254	(KVM_SYNC_PREFIX | KVM_SYNC_GPRS | KVM_SYNC_ACRS | KVM_SYNC_CRS | \
255	 KVM_SYNC_ARCH0 | KVM_SYNC_PFAULT | KVM_SYNC_VRS | KVM_SYNC_RICCB | \
256	 KVM_SYNC_FPRS | KVM_SYNC_GSCB | KVM_SYNC_BPBC | KVM_SYNC_ETOKEN | \
257	 KVM_SYNC_DIAG318)
258
259/* length and alignment of the sdnx as a power of two */
260#define SDNXC 8
261#define SDNXL (1UL << SDNXC)
262/* definition of registers in kvm_run */
263struct kvm_sync_regs {
264	__u64 prefix;	/* prefix register */
265	__u64 gprs[16];	/* general purpose registers */
266	__u32 acrs[16];	/* access registers */
267	__u64 crs[16];	/* control registers */
268	__u64 todpr;	/* tod programmable register [ARCH0] */
269	__u64 cputm;	/* cpu timer [ARCH0] */
270	__u64 ckc;	/* clock comparator [ARCH0] */
271	__u64 pp;	/* program parameter [ARCH0] */
272	__u64 gbea;	/* guest breaking-event address [ARCH0] */
273	__u64 pft;	/* pfault token [PFAULT] */
274	__u64 pfs;	/* pfault select [PFAULT] */
275	__u64 pfc;	/* pfault compare [PFAULT] */
276	union {
277		__u64 vrs[32][2];	/* vector registers (KVM_SYNC_VRS) */
278		__u64 fprs[16];		/* fp registers (KVM_SYNC_FPRS) */
279	};
280	__u8  reserved[512];	/* for future vector expansion */
281	__u32 fpc;		/* valid on KVM_SYNC_VRS or KVM_SYNC_FPRS */
282	__u8 bpbc : 1;		/* bp mode */
283	__u8 reserved2 : 7;
284	__u8 padding1[51];	/* riccb needs to be 64byte aligned */
285	__u8 riccb[64];		/* runtime instrumentation controls block */
286	__u64 diag318;		/* diagnose 0x318 info */
287	__u8 padding2[184];	/* sdnx needs to be 256byte aligned */
288	union {
289		__u8 sdnx[SDNXL];  /* state description annex */
290		struct {
291			__u64 reserved1[2];
292			__u64 gscb[4];
293			__u64 etoken;
294			__u64 etoken_extension;
295		};
296	};
297};
298
299#define KVM_REG_S390_TODPR	(KVM_REG_S390 | KVM_REG_SIZE_U32 | 0x1)
300#define KVM_REG_S390_EPOCHDIFF	(KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x2)
301#define KVM_REG_S390_CPU_TIMER  (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x3)
302#define KVM_REG_S390_CLOCK_COMP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x4)
303#define KVM_REG_S390_PFTOKEN	(KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x5)
304#define KVM_REG_S390_PFCOMPARE	(KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x6)
305#define KVM_REG_S390_PFSELECT	(KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x7)
306#define KVM_REG_S390_PP		(KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x8)
307#define KVM_REG_S390_GBEA	(KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x9)
308#endif
309