arch/s390/include/asm/kvm_host.h

   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 <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 <linux/kvm.h>
  20 #include <asm/debug.h>
  21 #include <asm/cpu.h>
  22
  23 #define KVM_MAX_VCPUS 64
  24 #define KVM_USER_MEM_SLOTS 32
  25
  26 struct sca_entry {
  27         atomic_t scn;
  28         __u32   reserved;
  29         __u64   sda;
  30         __u64   reserved2[2];
  31 } __attribute__((packed));
  32
  33
  34 struct sca_block {
  35         __u64   ipte_control;
  36         __u64   reserved[5];
  37         __u64   mcn;
  38         __u64   reserved2;
  39         struct sca_entry cpu[64];
  40 } __attribute__((packed));
  41
  42 #define CPUSTAT_STOPPED    0x80000000
  43 #define CPUSTAT_WAIT       0x10000000
  44 #define CPUSTAT_ECALL_PEND 0x08000000
  45 #define CPUSTAT_STOP_INT   0x04000000
  46 #define CPUSTAT_IO_INT     0x02000000
  47 #define CPUSTAT_EXT_INT    0x01000000
  48 #define CPUSTAT_RUNNING    0x00800000
  49 #define CPUSTAT_RETAINED   0x00400000
  50 #define CPUSTAT_TIMING_SUB 0x00020000
  51 #define CPUSTAT_SIE_SUB    0x00010000
  52 #define CPUSTAT_RRF        0x00008000
  53 #define CPUSTAT_SLSV       0x00004000
  54 #define CPUSTAT_SLSR       0x00002000
  55 #define CPUSTAT_ZARCH      0x00000800
  56 #define CPUSTAT_MCDS       0x00000100
  57 #define CPUSTAT_SM         0x00000080
  58 #define CPUSTAT_G          0x00000008
  59 #define CPUSTAT_GED        0x00000004
  60 #define CPUSTAT_J          0x00000002
  61 #define CPUSTAT_P          0x00000001
  62
  63 struct kvm_s390_sie_block {
  64         atomic_t cpuflags;              /* 0x0000 */
  65         __u32   prefix;                 /* 0x0004 */
  66         __u8    reserved08[4];          /* 0x0008 */
  67 #define PROG_IN_SIE (1<<0)
  68         __u32   prog0c;                 /* 0x000c */
  69         __u8    reserved10[16];         /* 0x0010 */
  70 #define PROG_BLOCK_SIE 0x00000001
  71         atomic_t prog20;                /* 0x0020 */
  72         __u8    reserved24[4];          /* 0x0024 */
  73         __u64   cputm;                  /* 0x0028 */
  74         __u64   ckc;                    /* 0x0030 */
  75         __u64   epoch;                  /* 0x0038 */
  76         __u8    reserved40[4];          /* 0x0040 */
  77 #define LCTL_CR0        0x8000
  78 #define LCTL_CR6        0x0200
  79 #define LCTL_CR14       0x0002
  80         __u16   lctl;                   /* 0x0044 */
  81         __s16   icpua;                  /* 0x0046 */
  82 #define ICTL_LPSW 0x00400000
  83         __u32   ictl;                   /* 0x0048 */
  84         __u32   eca;                    /* 0x004c */
  85         __u8    icptcode;               /* 0x0050 */
  86         __u8    reserved51;             /* 0x0051 */
  87         __u16   ihcpu;                  /* 0x0052 */
  88         __u8    reserved54[2];          /* 0x0054 */
  89         __u16   ipa;                    /* 0x0056 */
  90         __u32   ipb;                    /* 0x0058 */
  91         __u32   scaoh;                  /* 0x005c */
  92         __u8    reserved60;             /* 0x0060 */
  93         __u8    ecb;                    /* 0x0061 */
  94         __u8    ecb2;                   /* 0x0062 */
  95         __u8    reserved63[1];          /* 0x0063 */
  96         __u32   scaol;                  /* 0x0064 */
  97         __u8    reserved68[4];          /* 0x0068 */
  98         __u32   todpr;                  /* 0x006c */
  99         __u8    reserved70[32];         /* 0x0070 */
 100         psw_t   gpsw;                   /* 0x0090 */
 101         __u64   gg14;                   /* 0x00a0 */
 102         __u64   gg15;                   /* 0x00a8 */
 103         __u8    reservedb0[30];         /* 0x00b0 */
 104         __u16   iprcc;                  /* 0x00ce */
 105         __u8    reservedd0[48];         /* 0x00d0 */
 106         __u64   gcr[16];                /* 0x0100 */
 107         __u64   gbea;                   /* 0x0180 */
 108         __u8    reserved188[24];        /* 0x0188 */
 109         __u32   fac;                    /* 0x01a0 */
 110         __u8    reserved1a4[68];        /* 0x01a4 */
 111         __u64   itdba;                  /* 0x01e8 */
 112         __u8    reserved1f0[16];        /* 0x01f0 */
 113 } __attribute__((packed));
 114
 115 struct kvm_s390_itdb {
 116         __u8    data[256];
 117 } __packed;
 118
 119 struct sie_page {
 120         struct kvm_s390_sie_block sie_block;
 121         __u8 reserved200[1024];         /* 0x0200 */
 122         struct kvm_s390_itdb itdb;      /* 0x0600 */
 123         __u8 reserved700[2304];         /* 0x0700 */
 124 } __packed;
 125
 126 struct kvm_vcpu_stat {
 127         u32 exit_userspace;
 128         u32 exit_null;
 129         u32 exit_external_request;
 130         u32 exit_external_interrupt;
 131         u32 exit_stop_request;
 132         u32 exit_validity;
 133         u32 exit_instruction;
 134         u32 instruction_lctl;
 135         u32 instruction_lctlg;
 136         u32 exit_program_interruption;
 137         u32 exit_instr_and_program;
 138         u32 deliver_external_call;
 139         u32 deliver_emergency_signal;
 140         u32 deliver_service_signal;
 141         u32 deliver_virtio_interrupt;
 142         u32 deliver_stop_signal;
 143         u32 deliver_prefix_signal;
 144         u32 deliver_restart_signal;
 145         u32 deliver_program_int;
 146         u32 deliver_io_int;
 147         u32 exit_wait_state;
 148         u32 instruction_pfmf;
 149         u32 instruction_stidp;
 150         u32 instruction_spx;
 151         u32 instruction_stpx;
 152         u32 instruction_stap;
 153         u32 instruction_storage_key;
 154         u32 instruction_stsch;
 155         u32 instruction_chsc;
 156         u32 instruction_stsi;
 157         u32 instruction_stfl;
 158         u32 instruction_tprot;
 159         u32 instruction_sigp_sense;
 160         u32 instruction_sigp_sense_running;
 161         u32 instruction_sigp_external_call;
 162         u32 instruction_sigp_emergency;
 163         u32 instruction_sigp_stop;
 164         u32 instruction_sigp_arch;
 165         u32 instruction_sigp_prefix;
 166         u32 instruction_sigp_restart;
 167         u32 diagnose_10;
 168         u32 diagnose_44;
 169         u32 diagnose_9c;
 170 };
 171
 172 #define PGM_OPERATION            0x01
 173 #define PGM_PRIVILEGED_OP        0x02
 174 #define PGM_EXECUTE              0x03
 175 #define PGM_PROTECTION           0x04
 176 #define PGM_ADDRESSING           0x05
 177 #define PGM_SPECIFICATION        0x06
 178 #define PGM_DATA                 0x07
 179
 180 struct kvm_s390_interrupt_info {
 181         struct list_head list;
 182         u64     type;
 183         union {
 184                 struct kvm_s390_io_info io;
 185                 struct kvm_s390_ext_info ext;
 186                 struct kvm_s390_pgm_info pgm;
 187                 struct kvm_s390_emerg_info emerg;
 188                 struct kvm_s390_extcall_info extcall;
 189                 struct kvm_s390_prefix_info prefix;
 190                 struct kvm_s390_mchk_info mchk;
 191         };
 192 };
 193
 194 /* for local_interrupt.action_flags */
 195 #define ACTION_STORE_ON_STOP            (1<<0)
 196 #define ACTION_STOP_ON_STOP             (1<<1)
 197
 198 struct kvm_s390_local_interrupt {
 199         spinlock_t lock;
 200         struct list_head list;
 201         atomic_t active;
 202         struct kvm_s390_float_interrupt *float_int;
 203         int timer_due; /* event indicator for waitqueue below */
 204         wait_queue_head_t *wq;
 205         atomic_t *cpuflags;
 206         unsigned int action_bits;
 207 };
 208
 209 struct kvm_s390_float_interrupt {
 210         spinlock_t lock;
 211         struct list_head list;
 212         atomic_t active;
 213         int next_rr_cpu;
 214         unsigned long idle_mask[(KVM_MAX_VCPUS + sizeof(long) - 1)
 215                                 / sizeof(long)];
 216         struct kvm_s390_local_interrupt *local_int[KVM_MAX_VCPUS];
 217         unsigned int irq_count;
 218 };
 219
 220
 221 struct kvm_vcpu_arch {
 222         struct kvm_s390_sie_block *sie_block;
 223         s390_fp_regs      host_fpregs;
 224         unsigned int      host_acrs[NUM_ACRS];
 225         s390_fp_regs      guest_fpregs;
 226         struct kvm_s390_local_interrupt local_int;
 227         struct hrtimer    ckc_timer;
 228         struct tasklet_struct tasklet;
 229         union  {
 230                 struct cpuid    cpu_id;
 231                 u64             stidp_data;
 232         };
 233         struct gmap *gmap;
 234 };
 235
 236 struct kvm_vm_stat {
 237         u32 remote_tlb_flush;
 238 };
 239
 240 struct kvm_arch_memory_slot {
 241 };
 242
 243 struct kvm_arch{
 244         struct sca_block *sca;
 245         debug_info_t *dbf;
 246         struct kvm_s390_float_interrupt float_int;
 247         struct kvm_device *flic;
 248         struct gmap *gmap;
 249         int css_support;
 250 };
 251
 252 #define KVM_HVA_ERR_BAD         (-1UL)
 253 #define KVM_HVA_ERR_RO_BAD      (-2UL)
 254
 255 static inline bool kvm_is_error_hva(unsigned long addr)
 256 {
 257         return IS_ERR_VALUE(addr);
 258 }
 259
 260 extern int sie64a(struct kvm_s390_sie_block *, u64 *);
 261 extern char sie_exit;
 262 #endif