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kvm_host.h
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1 /*
2  * 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 <[email protected]>
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 
27 struct sca_entry {
28  atomic_t scn;
29  __u32 reserved;
30  __u64 sda;
31  __u64 reserved2[2];
32 } __attribute__((packed));
33 
34 
35 struct 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_STOPPED 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 
70 struct 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[32]; /* 0x0070 */
97  psw_t gpsw; /* 0x0090 */
98  __u64 gg14; /* 0x00a0 */
99  __u64 gg15; /* 0x00a8 */
100  __u8 reservedb0[30]; /* 0x00b0 */
101  __u16 iprcc; /* 0x00ce */
102  __u8 reservedd0[48]; /* 0x00d0 */
103  __u64 gcr[16]; /* 0x0100 */
104  __u64 gbea; /* 0x0180 */
105  __u8 reserved188[24]; /* 0x0188 */
106  __u32 fac; /* 0x01a0 */
107  __u8 reserved1a4[92]; /* 0x01a4 */
108 } __attribute__((packed));
109 
110 struct kvm_vcpu_stat {
111  u32 exit_userspace;
112  u32 exit_null;
113  u32 exit_external_request;
114  u32 exit_external_interrupt;
115  u32 exit_stop_request;
116  u32 exit_validity;
117  u32 exit_instruction;
118  u32 instruction_lctl;
119  u32 instruction_lctlg;
120  u32 exit_program_interruption;
121  u32 exit_instr_and_program;
122  u32 deliver_external_call;
123  u32 deliver_emergency_signal;
124  u32 deliver_service_signal;
125  u32 deliver_virtio_interrupt;
126  u32 deliver_stop_signal;
127  u32 deliver_prefix_signal;
128  u32 deliver_restart_signal;
129  u32 deliver_program_int;
130  u32 exit_wait_state;
131  u32 instruction_stidp;
132  u32 instruction_spx;
133  u32 instruction_stpx;
134  u32 instruction_stap;
135  u32 instruction_storage_key;
136  u32 instruction_stsch;
137  u32 instruction_chsc;
138  u32 instruction_stsi;
139  u32 instruction_stfl;
140  u32 instruction_tprot;
141  u32 instruction_sigp_sense;
142  u32 instruction_sigp_sense_running;
143  u32 instruction_sigp_external_call;
144  u32 instruction_sigp_emergency;
145  u32 instruction_sigp_stop;
146  u32 instruction_sigp_arch;
147  u32 instruction_sigp_prefix;
148  u32 instruction_sigp_restart;
149  u32 diagnose_10;
150  u32 diagnose_44;
151  u32 diagnose_9c;
152 };
153 
154 struct kvm_s390_io_info {
155  __u16 subchannel_id; /* 0x0b8 */
156  __u16 subchannel_nr; /* 0x0ba */
157  __u32 io_int_parm; /* 0x0bc */
158  __u32 io_int_word; /* 0x0c0 */
159 };
160 
161 struct kvm_s390_ext_info {
162  __u32 ext_params;
163  __u64 ext_params2;
164 };
165 
166 #define PGM_OPERATION 0x01
167 #define PGM_PRIVILEGED_OPERATION 0x02
168 #define PGM_EXECUTE 0x03
169 #define PGM_PROTECTION 0x04
170 #define PGM_ADDRESSING 0x05
171 #define PGM_SPECIFICATION 0x06
172 #define PGM_DATA 0x07
173 
174 struct kvm_s390_pgm_info {
175  __u16 code;
176 };
177 
178 struct kvm_s390_prefix_info {
179  __u32 address;
180 };
181 
182 struct kvm_s390_extcall_info {
183  __u16 code;
184 };
185 
186 struct kvm_s390_emerg_info {
187  __u16 code;
188 };
189 
190 struct kvm_s390_interrupt_info {
191  struct list_head list;
192  u64 type;
193  union {
194  struct kvm_s390_io_info io;
195  struct kvm_s390_ext_info ext;
196  struct kvm_s390_pgm_info pgm;
197  struct kvm_s390_emerg_info emerg;
198  struct kvm_s390_extcall_info extcall;
199  struct kvm_s390_prefix_info prefix;
200  };
201 };
202 
203 /* for local_interrupt.action_flags */
204 #define ACTION_STORE_ON_STOP (1<<0)
205 #define ACTION_STOP_ON_STOP (1<<1)
206 #define ACTION_RELOADVCPU_ON_STOP (1<<2)
207 
208 struct kvm_s390_local_interrupt {
209  spinlock_t lock;
210  struct list_head list;
211  atomic_t active;
212  struct kvm_s390_float_interrupt *float_int;
213  int timer_due; /* event indicator for waitqueue below */
214  wait_queue_head_t wq;
215  atomic_t *cpuflags;
216  unsigned int action_bits;
217 };
218 
219 struct kvm_s390_float_interrupt {
220  spinlock_t lock;
221  struct list_head list;
222  atomic_t active;
223  int next_rr_cpu;
224  unsigned long idle_mask[(KVM_MAX_VCPUS + sizeof(long) - 1)
225  / sizeof(long)];
226  struct kvm_s390_local_interrupt *local_int[KVM_MAX_VCPUS];
227 };
228 
229 
230 struct kvm_vcpu_arch {
231  struct kvm_s390_sie_block *sie_block;
232  s390_fp_regs host_fpregs;
233  unsigned int host_acrs[NUM_ACRS];
234  s390_fp_regs guest_fpregs;
235  struct kvm_s390_local_interrupt local_int;
236  struct hrtimer ckc_timer;
237  struct tasklet_struct tasklet;
238  union {
239  struct cpuid cpu_id;
240  u64 stidp_data;
241  };
242  struct gmap *gmap;
243 };
244 
245 struct kvm_vm_stat {
246  u32 remote_tlb_flush;
247 };
248 
249 struct kvm_arch_memory_slot {
250 };
251 
252 struct kvm_arch{
253  struct sca_block *sca;
254  debug_info_t *dbf;
255  struct kvm_s390_float_interrupt float_int;
256  struct gmap *gmap;
257 };
258 
259 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
260 #endif
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