1 /* 2 * asm-s390/kvm_host.h - definition for kernel virtual machines on s390 3 * 4 * Copyright IBM Corp. 2008 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/cpuid.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_PAGES_PER_HPAGE 256 44 45 #define CPUSTAT_HOST 0x80000000 46 #define CPUSTAT_WAIT 0x10000000 47 #define CPUSTAT_ECALL_PEND 0x08000000 48 #define CPUSTAT_STOP_INT 0x04000000 49 #define CPUSTAT_IO_INT 0x02000000 50 #define CPUSTAT_EXT_INT 0x01000000 51 #define CPUSTAT_RUNNING 0x00800000 52 #define CPUSTAT_RETAINED 0x00400000 53 #define CPUSTAT_TIMING_SUB 0x00020000 54 #define CPUSTAT_SIE_SUB 0x00010000 55 #define CPUSTAT_RRF 0x00008000 56 #define CPUSTAT_SLSV 0x00004000 57 #define CPUSTAT_SLSR 0x00002000 58 #define CPUSTAT_ZARCH 0x00000800 59 #define CPUSTAT_MCDS 0x00000100 60 #define CPUSTAT_SM 0x00000080 61 #define CPUSTAT_G 0x00000008 62 #define CPUSTAT_J 0x00000002 63 #define CPUSTAT_P 0x00000001 64 65 struct kvm_s390_sie_block { 66 atomic_t cpuflags; /* 0x0000 */ 67 __u32 prefix; /* 0x0004 */ 68 __u8 reserved8[32]; /* 0x0008 */ 69 __u64 cputm; /* 0x0028 */ 70 __u64 ckc; /* 0x0030 */ 71 __u64 epoch; /* 0x0038 */ 72 __u8 reserved40[4]; /* 0x0040 */ 73 #define LCTL_CR0 0x8000 74 __u16 lctl; /* 0x0044 */ 75 __s16 icpua; /* 0x0046 */ 76 __u32 ictl; /* 0x0048 */ 77 __u32 eca; /* 0x004c */ 78 __u8 icptcode; /* 0x0050 */ 79 __u8 reserved51; /* 0x0051 */ 80 __u16 ihcpu; /* 0x0052 */ 81 __u8 reserved54[2]; /* 0x0054 */ 82 __u16 ipa; /* 0x0056 */ 83 __u32 ipb; /* 0x0058 */ 84 __u32 scaoh; /* 0x005c */ 85 __u8 reserved60; /* 0x0060 */ 86 __u8 ecb; /* 0x0061 */ 87 __u8 reserved62[2]; /* 0x0062 */ 88 __u32 scaol; /* 0x0064 */ 89 __u8 reserved68[4]; /* 0x0068 */ 90 __u32 todpr; /* 0x006c */ 91 __u8 reserved70[16]; /* 0x0070 */ 92 __u64 gmsor; /* 0x0080 */ 93 __u64 gmslm; /* 0x0088 */ 94 psw_t gpsw; /* 0x0090 */ 95 __u64 gg14; /* 0x00a0 */ 96 __u64 gg15; /* 0x00a8 */ 97 __u8 reservedb0[30]; /* 0x00b0 */ 98 __u16 iprcc; /* 0x00ce */ 99 __u8 reservedd0[48]; /* 0x00d0 */ 100 __u64 gcr[16]; /* 0x0100 */ 101 __u64 gbea; /* 0x0180 */ 102 __u8 reserved188[24]; /* 0x0188 */ 103 __u32 fac; /* 0x01a0 */ 104 __u8 reserved1a4[92]; /* 0x01a4 */ 105 } __attribute__((packed)); 106 107 struct kvm_vcpu_stat { 108 u32 exit_userspace; 109 u32 exit_null; 110 u32 exit_external_request; 111 u32 exit_external_interrupt; 112 u32 exit_stop_request; 113 u32 exit_validity; 114 u32 exit_instruction; 115 u32 instruction_lctl; 116 u32 instruction_lctlg; 117 u32 exit_program_interruption; 118 u32 exit_instr_and_program; 119 u32 deliver_emergency_signal; 120 u32 deliver_service_signal; 121 u32 deliver_virtio_interrupt; 122 u32 deliver_stop_signal; 123 u32 deliver_prefix_signal; 124 u32 deliver_restart_signal; 125 u32 deliver_program_int; 126 u32 exit_wait_state; 127 u32 instruction_stidp; 128 u32 instruction_spx; 129 u32 instruction_stpx; 130 u32 instruction_stap; 131 u32 instruction_storage_key; 132 u32 instruction_stsch; 133 u32 instruction_chsc; 134 u32 instruction_stsi; 135 u32 instruction_stfl; 136 u32 instruction_sigp_sense; 137 u32 instruction_sigp_emergency; 138 u32 instruction_sigp_stop; 139 u32 instruction_sigp_arch; 140 u32 instruction_sigp_prefix; 141 u32 instruction_sigp_restart; 142 u32 diagnose_44; 143 }; 144 145 struct kvm_s390_io_info { 146 __u16 subchannel_id; /* 0x0b8 */ 147 __u16 subchannel_nr; /* 0x0ba */ 148 __u32 io_int_parm; /* 0x0bc */ 149 __u32 io_int_word; /* 0x0c0 */ 150 }; 151 152 struct kvm_s390_ext_info { 153 __u32 ext_params; 154 __u64 ext_params2; 155 }; 156 157 #define PGM_OPERATION 0x01 158 #define PGM_PRIVILEGED_OPERATION 0x02 159 #define PGM_EXECUTE 0x03 160 #define PGM_PROTECTION 0x04 161 #define PGM_ADDRESSING 0x05 162 #define PGM_SPECIFICATION 0x06 163 #define PGM_DATA 0x07 164 165 struct kvm_s390_pgm_info { 166 __u16 code; 167 }; 168 169 struct kvm_s390_prefix_info { 170 __u32 address; 171 }; 172 173 struct kvm_s390_interrupt_info { 174 struct list_head list; 175 u64 type; 176 union { 177 struct kvm_s390_io_info io; 178 struct kvm_s390_ext_info ext; 179 struct kvm_s390_pgm_info pgm; 180 struct kvm_s390_prefix_info prefix; 181 }; 182 }; 183 184 /* for local_interrupt.action_flags */ 185 #define ACTION_STORE_ON_STOP 1 186 #define ACTION_STOP_ON_STOP 2 187 188 struct kvm_s390_local_interrupt { 189 spinlock_t lock; 190 struct list_head list; 191 atomic_t active; 192 struct kvm_s390_float_interrupt *float_int; 193 int timer_due; /* event indicator for waitqueue below */ 194 wait_queue_head_t wq; 195 atomic_t *cpuflags; 196 unsigned int action_bits; 197 }; 198 199 struct kvm_s390_float_interrupt { 200 spinlock_t lock; 201 struct list_head list; 202 atomic_t active; 203 int next_rr_cpu; 204 unsigned long idle_mask [(64 + sizeof(long) - 1) / sizeof(long)]; 205 struct kvm_s390_local_interrupt *local_int[64]; 206 }; 207 208 209 struct kvm_vcpu_arch { 210 struct kvm_s390_sie_block *sie_block; 211 unsigned long guest_gprs[16]; 212 s390_fp_regs host_fpregs; 213 unsigned int host_acrs[NUM_ACRS]; 214 s390_fp_regs guest_fpregs; 215 unsigned int guest_acrs[NUM_ACRS]; 216 struct kvm_s390_local_interrupt local_int; 217 struct hrtimer ckc_timer; 218 struct tasklet_struct tasklet; 219 union { 220 cpuid_t cpu_id; 221 u64 stidp_data; 222 }; 223 }; 224 225 struct kvm_vm_stat { 226 u32 remote_tlb_flush; 227 }; 228 229 struct kvm_arch{ 230 unsigned long guest_origin; 231 unsigned long guest_memsize; 232 struct sca_block *sca; 233 debug_info_t *dbf; 234 struct kvm_s390_float_interrupt float_int; 235 }; 236 237 extern int sie64a(struct kvm_s390_sie_block *, unsigned long *); 238 #endif 239