tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/*
2 * asm-s390/kvm_host.h - definition for kernel virtual machines on s390
3 *
4 * Copyright IBM Corp. 2008,2009
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License (version 2 only)
8 * as published by the Free Software Foundation.
9 *
10 * Author(s): Carsten Otte <cotte@de.ibm.com>
11 */
12
13
14#ifndef ASM_KVM_HOST_H
15#define ASM_KVM_HOST_H
16#include <linux/hrtimer.h>
17#include <linux/interrupt.h>
18#include <linux/kvm_host.h>
19#include <asm/debug.h>
20#include <asm/cpu.h>
21
22#define KVM_MAX_VCPUS 64
23#define KVM_MEMORY_SLOTS 32
24/* memory slots that does not exposed to userspace */
25#define KVM_PRIVATE_MEM_SLOTS 4
26
27struct sca_entry {
28 atomic_t scn;
29 __u32 reserved;
30 __u64 sda;
31 __u64 reserved2[2];
32} __attribute__((packed));
33
34
35struct sca_block {
36 __u64 ipte_control;
37 __u64 reserved[5];
38 __u64 mcn;
39 __u64 reserved2;
40 struct sca_entry cpu[64];
41} __attribute__((packed));
42
43#define KVM_NR_PAGE_SIZES 2
44#define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 8)
45#define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
46#define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
47#define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
48#define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
49
50#define CPUSTAT_HOST 0x80000000
51#define CPUSTAT_WAIT 0x10000000
52#define CPUSTAT_ECALL_PEND 0x08000000
53#define CPUSTAT_STOP_INT 0x04000000
54#define CPUSTAT_IO_INT 0x02000000
55#define CPUSTAT_EXT_INT 0x01000000
56#define CPUSTAT_RUNNING 0x00800000
57#define CPUSTAT_RETAINED 0x00400000
58#define CPUSTAT_TIMING_SUB 0x00020000
59#define CPUSTAT_SIE_SUB 0x00010000
60#define CPUSTAT_RRF 0x00008000
61#define CPUSTAT_SLSV 0x00004000
62#define CPUSTAT_SLSR 0x00002000
63#define CPUSTAT_ZARCH 0x00000800
64#define CPUSTAT_MCDS 0x00000100
65#define CPUSTAT_SM 0x00000080
66#define CPUSTAT_G 0x00000008
67#define CPUSTAT_J 0x00000002
68#define CPUSTAT_P 0x00000001
69
70struct kvm_s390_sie_block {
71 atomic_t cpuflags; /* 0x0000 */
72 __u32 prefix; /* 0x0004 */
73 __u8 reserved8[32]; /* 0x0008 */
74 __u64 cputm; /* 0x0028 */
75 __u64 ckc; /* 0x0030 */
76 __u64 epoch; /* 0x0038 */
77 __u8 reserved40[4]; /* 0x0040 */
78#define LCTL_CR0 0x8000
79 __u16 lctl; /* 0x0044 */
80 __s16 icpua; /* 0x0046 */
81 __u32 ictl; /* 0x0048 */
82 __u32 eca; /* 0x004c */
83 __u8 icptcode; /* 0x0050 */
84 __u8 reserved51; /* 0x0051 */
85 __u16 ihcpu; /* 0x0052 */
86 __u8 reserved54[2]; /* 0x0054 */
87 __u16 ipa; /* 0x0056 */
88 __u32 ipb; /* 0x0058 */
89 __u32 scaoh; /* 0x005c */
90 __u8 reserved60; /* 0x0060 */
91 __u8 ecb; /* 0x0061 */
92 __u8 reserved62[2]; /* 0x0062 */
93 __u32 scaol; /* 0x0064 */
94 __u8 reserved68[4]; /* 0x0068 */
95 __u32 todpr; /* 0x006c */
96 __u8 reserved70[16]; /* 0x0070 */
97 __u64 gmsor; /* 0x0080 */
98 __u64 gmslm; /* 0x0088 */
99 psw_t gpsw; /* 0x0090 */
100 __u64 gg14; /* 0x00a0 */
101 __u64 gg15; /* 0x00a8 */
102 __u8 reservedb0[30]; /* 0x00b0 */
103 __u16 iprcc; /* 0x00ce */
104 __u8 reservedd0[48]; /* 0x00d0 */
105 __u64 gcr[16]; /* 0x0100 */
106 __u64 gbea; /* 0x0180 */
107 __u8 reserved188[24]; /* 0x0188 */
108 __u32 fac; /* 0x01a0 */
109 __u8 reserved1a4[92]; /* 0x01a4 */
110} __attribute__((packed));
111
112struct kvm_vcpu_stat {
113 u32 exit_userspace;
114 u32 exit_null;
115 u32 exit_external_request;
116 u32 exit_external_interrupt;
117 u32 exit_stop_request;
118 u32 exit_validity;
119 u32 exit_instruction;
120 u32 instruction_lctl;
121 u32 instruction_lctlg;
122 u32 exit_program_interruption;
123 u32 exit_instr_and_program;
124 u32 deliver_emergency_signal;
125 u32 deliver_service_signal;
126 u32 deliver_virtio_interrupt;
127 u32 deliver_stop_signal;
128 u32 deliver_prefix_signal;
129 u32 deliver_restart_signal;
130 u32 deliver_program_int;
131 u32 exit_wait_state;
132 u32 instruction_stidp;
133 u32 instruction_spx;
134 u32 instruction_stpx;
135 u32 instruction_stap;
136 u32 instruction_storage_key;
137 u32 instruction_stsch;
138 u32 instruction_chsc;
139 u32 instruction_stsi;
140 u32 instruction_stfl;
141 u32 instruction_sigp_sense;
142 u32 instruction_sigp_emergency;
143 u32 instruction_sigp_stop;
144 u32 instruction_sigp_arch;
145 u32 instruction_sigp_prefix;
146 u32 instruction_sigp_restart;
147 u32 diagnose_44;
148};
149
150struct kvm_s390_io_info {
151 __u16 subchannel_id; /* 0x0b8 */
152 __u16 subchannel_nr; /* 0x0ba */
153 __u32 io_int_parm; /* 0x0bc */
154 __u32 io_int_word; /* 0x0c0 */
155};
156
157struct kvm_s390_ext_info {
158 __u32 ext_params;
159 __u64 ext_params2;
160};
161
162#define PGM_OPERATION 0x01
163#define PGM_PRIVILEGED_OPERATION 0x02
164#define PGM_EXECUTE 0x03
165#define PGM_PROTECTION 0x04
166#define PGM_ADDRESSING 0x05
167#define PGM_SPECIFICATION 0x06
168#define PGM_DATA 0x07
169
170struct kvm_s390_pgm_info {
171 __u16 code;
172};
173
174struct kvm_s390_prefix_info {
175 __u32 address;
176};
177
178struct kvm_s390_interrupt_info {
179 struct list_head list;
180 u64 type;
181 union {
182 struct kvm_s390_io_info io;
183 struct kvm_s390_ext_info ext;
184 struct kvm_s390_pgm_info pgm;
185 struct kvm_s390_prefix_info prefix;
186 };
187};
188
189/* for local_interrupt.action_flags */
190#define ACTION_STORE_ON_STOP (1<<0)
191#define ACTION_STOP_ON_STOP (1<<1)
192#define ACTION_RELOADVCPU_ON_STOP (1<<2)
193
194struct kvm_s390_local_interrupt {
195 spinlock_t lock;
196 struct list_head list;
197 atomic_t active;
198 struct kvm_s390_float_interrupt *float_int;
199 int timer_due; /* event indicator for waitqueue below */
200 wait_queue_head_t wq;
201 atomic_t *cpuflags;
202 unsigned int action_bits;
203};
204
205struct kvm_s390_float_interrupt {
206 spinlock_t lock;
207 struct list_head list;
208 atomic_t active;
209 int next_rr_cpu;
210 unsigned long idle_mask [(64 + sizeof(long) - 1) / sizeof(long)];
211 struct kvm_s390_local_interrupt *local_int[64];
212};
213
214
215struct kvm_vcpu_arch {
216 struct kvm_s390_sie_block *sie_block;
217 unsigned long guest_gprs[16];
218 s390_fp_regs host_fpregs;
219 unsigned int host_acrs[NUM_ACRS];
220 s390_fp_regs guest_fpregs;
221 unsigned int guest_acrs[NUM_ACRS];
222 struct kvm_s390_local_interrupt local_int;
223 struct hrtimer ckc_timer;
224 struct tasklet_struct tasklet;
225 union {
226 struct cpuid cpu_id;
227 u64 stidp_data;
228 };
229};
230
231struct kvm_vm_stat {
232 u32 remote_tlb_flush;
233};
234
235struct kvm_arch{
236 struct sca_block *sca;
237 debug_info_t *dbf;
238 struct kvm_s390_float_interrupt float_int;
239};
240
241extern int sie64a(struct kvm_s390_sie_block *, unsigned long *);
242#endif