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[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_external_call; 125 u32 deliver_emergency_signal; 126 u32 deliver_service_signal; 127 u32 deliver_virtio_interrupt; 128 u32 deliver_stop_signal; 129 u32 deliver_prefix_signal; 130 u32 deliver_restart_signal; 131 u32 deliver_program_int; 132 u32 deliver_io_int; 133 u32 exit_wait_state; 134 u32 instruction_pfmf; 135 u32 instruction_stidp; 136 u32 instruction_spx; 137 u32 instruction_stpx; 138 u32 instruction_stap; 139 u32 instruction_storage_key; 140 u32 instruction_stsch; 141 u32 instruction_chsc; 142 u32 instruction_stsi; 143 u32 instruction_stfl; 144 u32 instruction_tprot; 145 u32 instruction_sigp_sense; 146 u32 instruction_sigp_sense_running; 147 u32 instruction_sigp_external_call; 148 u32 instruction_sigp_emergency; 149 u32 instruction_sigp_stop; 150 u32 instruction_sigp_arch; 151 u32 instruction_sigp_prefix; 152 u32 instruction_sigp_restart; 153 u32 diagnose_10; 154 u32 diagnose_44; 155 u32 diagnose_9c; 156 }; 157 158 struct kvm_s390_io_info { 159 __u16 subchannel_id; /* 0x0b8 */ 160 __u16 subchannel_nr; /* 0x0ba */ 161 __u32 io_int_parm; /* 0x0bc */ 162 __u32 io_int_word; /* 0x0c0 */ 163 }; 164 165 struct kvm_s390_ext_info { 166 __u32 ext_params; 167 __u64 ext_params2; 168 }; 169 170 #define PGM_OPERATION 0x01 171 #define PGM_PRIVILEGED_OP 0x02 172 #define PGM_EXECUTE 0x03 173 #define PGM_PROTECTION 0x04 174 #define PGM_ADDRESSING 0x05 175 #define PGM_SPECIFICATION 0x06 176 #define PGM_DATA 0x07 177 178 struct kvm_s390_pgm_info { 179 __u16 code; 180 }; 181 182 struct kvm_s390_prefix_info { 183 __u32 address; 184 }; 185 186 struct kvm_s390_extcall_info { 187 __u16 code; 188 }; 189 190 struct kvm_s390_emerg_info { 191 __u16 code; 192 }; 193 194 struct kvm_s390_mchk_info { 195 __u64 cr14; 196 __u64 mcic; 197 }; 198 199 struct kvm_s390_interrupt_info { 200 struct list_head list; 201 u64 type; 202 union { 203 struct kvm_s390_io_info io; 204 struct kvm_s390_ext_info ext; 205 struct kvm_s390_pgm_info pgm; 206 struct kvm_s390_emerg_info emerg; 207 struct kvm_s390_extcall_info extcall; 208 struct kvm_s390_prefix_info prefix; 209 struct kvm_s390_mchk_info mchk; 210 }; 211 }; 212 213 /* for local_interrupt.action_flags */ 214 #define ACTION_STORE_ON_STOP (1<<0) 215 #define ACTION_STOP_ON_STOP (1<<1) 216 217 struct kvm_s390_local_interrupt { 218 spinlock_t lock; 219 struct list_head list; 220 atomic_t active; 221 struct kvm_s390_float_interrupt *float_int; 222 int timer_due; /* event indicator for waitqueue below */ 223 wait_queue_head_t *wq; 224 atomic_t *cpuflags; 225 unsigned int action_bits; 226 }; 227 228 struct kvm_s390_float_interrupt { 229 spinlock_t lock; 230 struct list_head list; 231 atomic_t active; 232 int next_rr_cpu; 233 unsigned long idle_mask[(KVM_MAX_VCPUS + sizeof(long) - 1) 234 / sizeof(long)]; 235 struct kvm_s390_local_interrupt *local_int[KVM_MAX_VCPUS]; 236 }; 237 238 239 struct kvm_vcpu_arch { 240 struct kvm_s390_sie_block *sie_block; 241 s390_fp_regs host_fpregs; 242 unsigned int host_acrs[NUM_ACRS]; 243 s390_fp_regs guest_fpregs; 244 struct kvm_s390_local_interrupt local_int; 245 struct hrtimer ckc_timer; 246 struct tasklet_struct tasklet; 247 union { 248 struct cpuid cpu_id; 249 u64 stidp_data; 250 }; 251 struct gmap *gmap; 252 }; 253 254 struct kvm_vm_stat { 255 u32 remote_tlb_flush; 256 }; 257 258 struct kvm_arch_memory_slot { 259 }; 260 261 struct kvm_arch{ 262 struct sca_block *sca; 263 debug_info_t *dbf; 264 struct kvm_s390_float_interrupt float_int; 265 struct gmap *gmap; 266 int css_support; 267 }; 268 269 #define KVM_HVA_ERR_BAD (-1UL) 270 #define KVM_HVA_ERR_RO_BAD (-2UL) 271 272 static inline bool kvm_is_error_hva(unsigned long addr) 273 { 274 return IS_ERR_VALUE(addr); 275 } 276 277 extern int sie64a(struct kvm_s390_sie_block *, u64 *); 278 extern char sie_exit; 279 #endif 280