KVM: Introduce kvm_memory_slot::arch and move lpage_info into it
[linux-3.10.git] / arch / s390 / include / asm / kvm_host.h
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
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 };
152
153 struct kvm_s390_io_info {
154         __u16        subchannel_id;            /* 0x0b8 */
155         __u16        subchannel_nr;            /* 0x0ba */
156         __u32        io_int_parm;              /* 0x0bc */
157         __u32        io_int_word;              /* 0x0c0 */
158 };
159
160 struct kvm_s390_ext_info {
161         __u32 ext_params;
162         __u64 ext_params2;
163 };
164
165 #define PGM_OPERATION            0x01
166 #define PGM_PRIVILEGED_OPERATION 0x02
167 #define PGM_EXECUTE              0x03
168 #define PGM_PROTECTION           0x04
169 #define PGM_ADDRESSING           0x05
170 #define PGM_SPECIFICATION        0x06
171 #define PGM_DATA                 0x07
172
173 struct kvm_s390_pgm_info {
174         __u16 code;
175 };
176
177 struct kvm_s390_prefix_info {
178         __u32 address;
179 };
180
181 struct kvm_s390_extcall_info {
182         __u16 code;
183 };
184
185 struct kvm_s390_emerg_info {
186         __u16 code;
187 };
188
189 struct kvm_s390_interrupt_info {
190         struct list_head list;
191         u64     type;
192         union {
193                 struct kvm_s390_io_info io;
194                 struct kvm_s390_ext_info ext;
195                 struct kvm_s390_pgm_info pgm;
196                 struct kvm_s390_emerg_info emerg;
197                 struct kvm_s390_extcall_info extcall;
198                 struct kvm_s390_prefix_info prefix;
199         };
200 };
201
202 /* for local_interrupt.action_flags */
203 #define ACTION_STORE_ON_STOP            (1<<0)
204 #define ACTION_STOP_ON_STOP             (1<<1)
205 #define ACTION_RELOADVCPU_ON_STOP       (1<<2)
206
207 struct kvm_s390_local_interrupt {
208         spinlock_t lock;
209         struct list_head list;
210         atomic_t active;
211         struct kvm_s390_float_interrupt *float_int;
212         int timer_due; /* event indicator for waitqueue below */
213         wait_queue_head_t wq;
214         atomic_t *cpuflags;
215         unsigned int action_bits;
216 };
217
218 struct kvm_s390_float_interrupt {
219         spinlock_t lock;
220         struct list_head list;
221         atomic_t active;
222         int next_rr_cpu;
223         unsigned long idle_mask[(KVM_MAX_VCPUS + sizeof(long) - 1)
224                                 / sizeof(long)];
225         struct kvm_s390_local_interrupt *local_int[KVM_MAX_VCPUS];
226 };
227
228
229 struct kvm_vcpu_arch {
230         struct kvm_s390_sie_block *sie_block;
231         s390_fp_regs      host_fpregs;
232         unsigned int      host_acrs[NUM_ACRS];
233         s390_fp_regs      guest_fpregs;
234         struct kvm_s390_local_interrupt local_int;
235         struct hrtimer    ckc_timer;
236         struct tasklet_struct tasklet;
237         union  {
238                 struct cpuid    cpu_id;
239                 u64             stidp_data;
240         };
241         struct gmap *gmap;
242 };
243
244 struct kvm_vm_stat {
245         u32 remote_tlb_flush;
246 };
247
248 struct kvm_arch_memory_slot {
249 };
250
251 struct kvm_arch{
252         struct sca_block *sca;
253         debug_info_t *dbf;
254         struct kvm_s390_float_interrupt float_int;
255         struct gmap *gmap;
256 };
257
258 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
259 #endif