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_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
  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[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
 112 struct 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
 150 struct 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
 157 struct 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
 170 struct kvm_s390_pgm_info {
 171         __u16 code;
 172 };
 173
 174 struct kvm_s390_prefix_info {
 175         __u32 address;
 176 };
 177
 178 struct 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
 194 struct 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
 205 struct 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
 215 struct 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
 231 struct kvm_vm_stat {
 232         u32 remote_tlb_flush;
 233 };
 234
 235 struct kvm_arch{
 236         struct sca_block *sca;
 237         debug_info_t *dbf;
 238         struct kvm_s390_float_interrupt float_int;
 239 };
 240
 241 extern int sie64a(struct kvm_s390_sie_block *, unsigned long *);
 242 #endif