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 <asm/debug.h> 20 #include <asm/cpu.h> 21 22 #define KVM_MAX_VCPUS 64 23 #define KVM_USER_MEM_SLOTS 32 24 25 struct sca_entry { 26 atomic_t scn; 27 __u32 reserved; 28 __u64 sda; 29 __u64 reserved2[2]; 30 } __attribute__((packed)); 31 32 33 struct sca_block { 34 __u64 ipte_control; 35 __u64 reserved[5]; 36 __u64 mcn; 37 __u64 reserved2; 38 struct sca_entry cpu[64]; 39 } __attribute__((packed)); 40 41 #define CPUSTAT_STOPPED 0x80000000 42 #define CPUSTAT_WAIT 0x10000000 43 #define CPUSTAT_ECALL_PEND 0x08000000 44 #define CPUSTAT_STOP_INT 0x04000000 45 #define CPUSTAT_IO_INT 0x02000000 46 #define CPUSTAT_EXT_INT 0x01000000 47 #define CPUSTAT_RUNNING 0x00800000 48 #define CPUSTAT_RETAINED 0x00400000 49 #define CPUSTAT_TIMING_SUB 0x00020000 50 #define CPUSTAT_SIE_SUB 0x00010000 51 #define CPUSTAT_RRF 0x00008000 52 #define CPUSTAT_SLSV 0x00004000 53 #define CPUSTAT_SLSR 0x00002000 54 #define CPUSTAT_ZARCH 0x00000800 55 #define CPUSTAT_MCDS 0x00000100 56 #define CPUSTAT_SM 0x00000080 57 #define CPUSTAT_G 0x00000008 58 #define CPUSTAT_GED 0x00000004 59 #define CPUSTAT_J 0x00000002 60 #define CPUSTAT_P 0x00000001 61 62 struct kvm_s390_sie_block { 63 atomic_t cpuflags; /* 0x0000 */ 64 __u32 prefix; /* 0x0004 */ 65 __u8 reserved08[4]; /* 0x0008 */ 66 #define PROG_IN_SIE (1<<0) 67 __u32 prog0c; /* 0x000c */ 68 __u8 reserved10[16]; /* 0x0010 */ 69 #define PROG_BLOCK_SIE 0x00000001 70 atomic_t prog20; /* 0x0020 */ 71 __u8 reserved24[4]; /* 0x0024 */ 72 __u64 cputm; /* 0x0028 */ 73 __u64 ckc; /* 0x0030 */ 74 __u64 epoch; /* 0x0038 */ 75 __u8 reserved40[4]; /* 0x0040 */ 76 #define LCTL_CR0 0x8000 77 #define LCTL_CR6 0x0200 78 #define LCTL_CR14 0x0002 79 __u16 lctl; /* 0x0044 */ 80 __s16 icpua; /* 0x0046 */ 81 #define ICTL_LPSW 0x00400000 82 __u32 ictl; /* 0x0048 */ 83 __u32 eca; /* 0x004c */ 84 __u8 icptcode; /* 0x0050 */ 85 __u8 reserved51; /* 0x0051 */ 86 __u16 ihcpu; /* 0x0052 */ 87 __u8 reserved54[2]; /* 0x0054 */ 88 __u16 ipa; /* 0x0056 */ 89 __u32 ipb; /* 0x0058 */ 90 __u32 scaoh; /* 0x005c */ 91 __u8 reserved60; /* 0x0060 */ 92 __u8 ecb; /* 0x0061 */ 93 __u8 ecb2; /* 0x0062 */ 94 __u8 reserved63[1]; /* 0x0063 */ 95 __u32 scaol; /* 0x0064 */ 96 __u8 reserved68[4]; /* 0x0068 */ 97 __u32 todpr; /* 0x006c */ 98 __u8 reserved70[32]; /* 0x0070 */ 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[68]; /* 0x01a4 */ 110 __u64 itdba; /* 0x01e8 */ 111 __u8 reserved1f0[16]; /* 0x01f0 */ 112 } __attribute__((packed)); 113 114 struct kvm_s390_itdb { 115 __u8 data[256]; 116 } __packed; 117 118 struct sie_page { 119 struct kvm_s390_sie_block sie_block; 120 __u8 reserved200[1024]; /* 0x0200 */ 121 struct kvm_s390_itdb itdb; /* 0x0600 */ 122 __u8 reserved700[2304]; /* 0x0700 */ 123 } __packed; 124 125 struct kvm_vcpu_stat { 126 u32 exit_userspace; 127 u32 exit_null; 128 u32 exit_external_request; 129 u32 exit_external_interrupt; 130 u32 exit_stop_request; 131 u32 exit_validity; 132 u32 exit_instruction; 133 u32 instruction_lctl; 134 u32 instruction_lctlg; 135 u32 exit_program_interruption; 136 u32 exit_instr_and_program; 137 u32 deliver_external_call; 138 u32 deliver_emergency_signal; 139 u32 deliver_service_signal; 140 u32 deliver_virtio_interrupt; 141 u32 deliver_stop_signal; 142 u32 deliver_prefix_signal; 143 u32 deliver_restart_signal; 144 u32 deliver_program_int; 145 u32 deliver_io_int; 146 u32 exit_wait_state; 147 u32 instruction_pfmf; 148 u32 instruction_stidp; 149 u32 instruction_spx; 150 u32 instruction_stpx; 151 u32 instruction_stap; 152 u32 instruction_storage_key; 153 u32 instruction_stsch; 154 u32 instruction_chsc; 155 u32 instruction_stsi; 156 u32 instruction_stfl; 157 u32 instruction_tprot; 158 u32 instruction_sigp_sense; 159 u32 instruction_sigp_sense_running; 160 u32 instruction_sigp_external_call; 161 u32 instruction_sigp_emergency; 162 u32 instruction_sigp_stop; 163 u32 instruction_sigp_arch; 164 u32 instruction_sigp_prefix; 165 u32 instruction_sigp_restart; 166 u32 diagnose_10; 167 u32 diagnose_44; 168 u32 diagnose_9c; 169 }; 170 171 struct kvm_s390_io_info { 172 __u16 subchannel_id; /* 0x0b8 */ 173 __u16 subchannel_nr; /* 0x0ba */ 174 __u32 io_int_parm; /* 0x0bc */ 175 __u32 io_int_word; /* 0x0c0 */ 176 }; 177 178 struct kvm_s390_ext_info { 179 __u32 ext_params; 180 __u64 ext_params2; 181 }; 182 183 #define PGM_OPERATION 0x01 184 #define PGM_PRIVILEGED_OP 0x02 185 #define PGM_EXECUTE 0x03 186 #define PGM_PROTECTION 0x04 187 #define PGM_ADDRESSING 0x05 188 #define PGM_SPECIFICATION 0x06 189 #define PGM_DATA 0x07 190 191 struct kvm_s390_pgm_info { 192 __u16 code; 193 }; 194 195 struct kvm_s390_prefix_info { 196 __u32 address; 197 }; 198 199 struct kvm_s390_extcall_info { 200 __u16 code; 201 }; 202 203 struct kvm_s390_emerg_info { 204 __u16 code; 205 }; 206 207 struct kvm_s390_mchk_info { 208 __u64 cr14; 209 __u64 mcic; 210 }; 211 212 struct kvm_s390_interrupt_info { 213 struct list_head list; 214 u64 type; 215 union { 216 struct kvm_s390_io_info io; 217 struct kvm_s390_ext_info ext; 218 struct kvm_s390_pgm_info pgm; 219 struct kvm_s390_emerg_info emerg; 220 struct kvm_s390_extcall_info extcall; 221 struct kvm_s390_prefix_info prefix; 222 struct kvm_s390_mchk_info mchk; 223 }; 224 }; 225 226 /* for local_interrupt.action_flags */ 227 #define ACTION_STORE_ON_STOP (1<<0) 228 #define ACTION_STOP_ON_STOP (1<<1) 229 230 struct kvm_s390_local_interrupt { 231 spinlock_t lock; 232 struct list_head list; 233 atomic_t active; 234 struct kvm_s390_float_interrupt *float_int; 235 int timer_due; /* event indicator for waitqueue below */ 236 wait_queue_head_t *wq; 237 atomic_t *cpuflags; 238 unsigned int action_bits; 239 }; 240 241 struct kvm_s390_float_interrupt { 242 spinlock_t lock; 243 struct list_head list; 244 atomic_t active; 245 int next_rr_cpu; 246 unsigned long idle_mask[(KVM_MAX_VCPUS + sizeof(long) - 1) 247 / sizeof(long)]; 248 struct kvm_s390_local_interrupt *local_int[KVM_MAX_VCPUS]; 249 }; 250 251 252 struct kvm_vcpu_arch { 253 struct kvm_s390_sie_block *sie_block; 254 s390_fp_regs host_fpregs; 255 unsigned int host_acrs[NUM_ACRS]; 256 s390_fp_regs guest_fpregs; 257 struct kvm_s390_local_interrupt local_int; 258 struct hrtimer ckc_timer; 259 struct tasklet_struct tasklet; 260 union { 261 struct cpuid cpu_id; 262 u64 stidp_data; 263 }; 264 struct gmap *gmap; 265 }; 266 267 struct kvm_vm_stat { 268 u32 remote_tlb_flush; 269 }; 270 271 struct kvm_arch_memory_slot { 272 }; 273 274 struct kvm_arch{ 275 struct sca_block *sca; 276 debug_info_t *dbf; 277 struct kvm_s390_float_interrupt float_int; 278 struct gmap *gmap; 279 int css_support; 280 }; 281 282 #define KVM_HVA_ERR_BAD (-1UL) 283 #define KVM_HVA_ERR_RO_BAD (-2UL) 284 285 static inline bool kvm_is_error_hva(unsigned long addr) 286 { 287 return IS_ERR_VALUE(addr); 288 } 289 290 extern int sie64a(struct kvm_s390_sie_block *, u64 *); 291 extern char sie_exit; 292 #endif 293