Merge branch 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm
[linux-2.6.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         __u64   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_SHIFT(x) (PAGE_SHIFT + ((x) - 1) * 8)
45 #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
46 #define KVM_HPAGE_MASK(x)       (~(KVM_HPAGE_SIZE(x) - 1))
47 #define KVM_PAGES_PER_HPAGE(x)  (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
48
49 #define CPUSTAT_HOST       0x80000000
50 #define CPUSTAT_WAIT       0x10000000
51 #define CPUSTAT_ECALL_PEND 0x08000000
52 #define CPUSTAT_STOP_INT   0x04000000
53 #define CPUSTAT_IO_INT     0x02000000
54 #define CPUSTAT_EXT_INT    0x01000000
55 #define CPUSTAT_RUNNING    0x00800000
56 #define CPUSTAT_RETAINED   0x00400000
57 #define CPUSTAT_TIMING_SUB 0x00020000
58 #define CPUSTAT_SIE_SUB    0x00010000
59 #define CPUSTAT_RRF        0x00008000
60 #define CPUSTAT_SLSV       0x00004000
61 #define CPUSTAT_SLSR       0x00002000
62 #define CPUSTAT_ZARCH      0x00000800
63 #define CPUSTAT_MCDS       0x00000100
64 #define CPUSTAT_SM         0x00000080
65 #define CPUSTAT_G          0x00000008
66 #define CPUSTAT_J          0x00000002
67 #define CPUSTAT_P          0x00000001
68
69 struct kvm_s390_sie_block {
70         atomic_t cpuflags;              /* 0x0000 */
71         __u32   prefix;                 /* 0x0004 */
72         __u8    reserved8[32];          /* 0x0008 */
73         __u64   cputm;                  /* 0x0028 */
74         __u64   ckc;                    /* 0x0030 */
75         __u64   epoch;                  /* 0x0038 */
76         __u8    reserved40[4];          /* 0x0040 */
77 #define LCTL_CR0        0x8000
78         __u16   lctl;                   /* 0x0044 */
79         __s16   icpua;                  /* 0x0046 */
80         __u32   ictl;                   /* 0x0048 */
81         __u32   eca;                    /* 0x004c */
82         __u8    icptcode;               /* 0x0050 */
83         __u8    reserved51;             /* 0x0051 */
84         __u16   ihcpu;                  /* 0x0052 */
85         __u8    reserved54[2];          /* 0x0054 */
86         __u16   ipa;                    /* 0x0056 */
87         __u32   ipb;                    /* 0x0058 */
88         __u32   scaoh;                  /* 0x005c */
89         __u8    reserved60;             /* 0x0060 */
90         __u8    ecb;                    /* 0x0061 */
91         __u8    reserved62[2];          /* 0x0062 */
92         __u32   scaol;                  /* 0x0064 */
93         __u8    reserved68[4];          /* 0x0068 */
94         __u32   todpr;                  /* 0x006c */
95         __u8    reserved70[16];         /* 0x0070 */
96         __u64   gmsor;                  /* 0x0080 */
97         __u64   gmslm;                  /* 0x0088 */
98         psw_t   gpsw;                   /* 0x0090 */
99         __u64   gg14;                   /* 0x00a0 */
100         __u64   gg15;                   /* 0x00a8 */
101         __u8    reservedb0[30];         /* 0x00b0 */
102         __u16   iprcc;                  /* 0x00ce */
103         __u8    reservedd0[48];         /* 0x00d0 */
104         __u64   gcr[16];                /* 0x0100 */
105         __u64   gbea;                   /* 0x0180 */
106         __u8    reserved188[24];        /* 0x0188 */
107         __u32   fac;                    /* 0x01a0 */
108         __u8    reserved1a4[92];        /* 0x01a4 */
109 } __attribute__((packed));
110
111 struct kvm_vcpu_stat {
112         u32 exit_userspace;
113         u32 exit_null;
114         u32 exit_external_request;
115         u32 exit_external_interrupt;
116         u32 exit_stop_request;
117         u32 exit_validity;
118         u32 exit_instruction;
119         u32 instruction_lctl;
120         u32 instruction_lctlg;
121         u32 exit_program_interruption;
122         u32 exit_instr_and_program;
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_sigp_sense;
141         u32 instruction_sigp_emergency;
142         u32 instruction_sigp_stop;
143         u32 instruction_sigp_arch;
144         u32 instruction_sigp_prefix;
145         u32 instruction_sigp_restart;
146         u32 diagnose_44;
147 };
148
149 struct kvm_s390_io_info {
150         __u16        subchannel_id;            /* 0x0b8 */
151         __u16        subchannel_nr;            /* 0x0ba */
152         __u32        io_int_parm;              /* 0x0bc */
153         __u32        io_int_word;              /* 0x0c0 */
154 };
155
156 struct kvm_s390_ext_info {
157         __u32 ext_params;
158         __u64 ext_params2;
159 };
160
161 #define PGM_OPERATION            0x01
162 #define PGM_PRIVILEGED_OPERATION 0x02
163 #define PGM_EXECUTE              0x03
164 #define PGM_PROTECTION           0x04
165 #define PGM_ADDRESSING           0x05
166 #define PGM_SPECIFICATION        0x06
167 #define PGM_DATA                 0x07
168
169 struct kvm_s390_pgm_info {
170         __u16 code;
171 };
172
173 struct kvm_s390_prefix_info {
174         __u32 address;
175 };
176
177 struct kvm_s390_interrupt_info {
178         struct list_head list;
179         u64     type;
180         union {
181                 struct kvm_s390_io_info io;
182                 struct kvm_s390_ext_info ext;
183                 struct kvm_s390_pgm_info pgm;
184                 struct kvm_s390_prefix_info prefix;
185         };
186 };
187
188 /* for local_interrupt.action_flags */
189 #define ACTION_STORE_ON_STOP            (1<<0)
190 #define ACTION_STOP_ON_STOP             (1<<1)
191 #define ACTION_RELOADVCPU_ON_STOP       (1<<2)
192
193 struct kvm_s390_local_interrupt {
194         spinlock_t lock;
195         struct list_head list;
196         atomic_t active;
197         struct kvm_s390_float_interrupt *float_int;
198         int timer_due; /* event indicator for waitqueue below */
199         wait_queue_head_t wq;
200         atomic_t *cpuflags;
201         unsigned int action_bits;
202 };
203
204 struct kvm_s390_float_interrupt {
205         spinlock_t lock;
206         struct list_head list;
207         atomic_t active;
208         int next_rr_cpu;
209         unsigned long idle_mask [(64 + sizeof(long) - 1) / sizeof(long)];
210         struct kvm_s390_local_interrupt *local_int[64];
211 };
212
213
214 struct kvm_vcpu_arch {
215         struct kvm_s390_sie_block *sie_block;
216         unsigned long     guest_gprs[16];
217         s390_fp_regs      host_fpregs;
218         unsigned int      host_acrs[NUM_ACRS];
219         s390_fp_regs      guest_fpregs;
220         unsigned int      guest_acrs[NUM_ACRS];
221         struct kvm_s390_local_interrupt local_int;
222         struct hrtimer    ckc_timer;
223         struct tasklet_struct tasklet;
224         union  {
225                 struct cpuid    cpu_id;
226                 u64             stidp_data;
227         };
228 };
229
230 struct kvm_vm_stat {
231         u32 remote_tlb_flush;
232 };
233
234 struct kvm_arch{
235         struct sca_block *sca;
236         debug_info_t *dbf;
237         struct kvm_s390_float_interrupt float_int;
238 };
239
240 extern int sie64a(struct kvm_s390_sie_block *, unsigned long *);
241 #endif