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_STOPPED 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[32]; /* 0x0070 */ 97 psw_t gpsw; /* 0x0090 */ 98 __u64 gg14; /* 0x00a0 */ 99 __u64 gg15; /* 0x00a8 */ 100 __u8 reservedb0[30]; /* 0x00b0 */ 101 __u16 iprcc; /* 0x00ce */ 102 __u8 reservedd0[48]; /* 0x00d0 */ 103 __u64 gcr[16]; /* 0x0100 */ 104 __u64 gbea; /* 0x0180 */ 105 __u8 reserved188[24]; /* 0x0188 */ 106 __u32 fac; /* 0x01a0 */ 107 __u8 reserved1a4[92]; /* 0x01a4 */ 108 } __attribute__((packed)); 109 110 struct kvm_vcpu_stat { 111 u32 exit_userspace; 112 u32 exit_null; 113 u32 exit_external_request; 114 u32 exit_external_interrupt; 115 u32 exit_stop_request; 116 u32 exit_validity; 117 u32 exit_instruction; 118 u32 instruction_lctl; 119 u32 instruction_lctlg; 120 u32 exit_program_interruption; 121 u32 exit_instr_and_program; 122 u32 deliver_external_call; 123 u32 deliver_emergency_signal; 124 u32 deliver_service_signal; 125 u32 deliver_virtio_interrupt; 126 u32 deliver_stop_signal; 127 u32 deliver_prefix_signal; 128 u32 deliver_restart_signal; 129 u32 deliver_program_int; 130 u32 exit_wait_state; 131 u32 instruction_stidp; 132 u32 instruction_spx; 133 u32 instruction_stpx; 134 u32 instruction_stap; 135 u32 instruction_storage_key; 136 u32 instruction_stsch; 137 u32 instruction_chsc; 138 u32 instruction_stsi; 139 u32 instruction_stfl; 140 u32 instruction_tprot; 141 u32 instruction_sigp_sense; 142 u32 instruction_sigp_sense_running; 143 u32 instruction_sigp_external_call; 144 u32 instruction_sigp_emergency; 145 u32 instruction_sigp_stop; 146 u32 instruction_sigp_arch; 147 u32 instruction_sigp_prefix; 148 u32 instruction_sigp_restart; 149 u32 diagnose_10; 150 u32 diagnose_44; 151 }; 152 153 struct kvm_s390_io_info { 154 __u16 subchannel_id; /* 0x0b8 */ 155 __u16 subchannel_nr; /* 0x0ba */ 156 __u32 io_int_parm; /* 0x0bc */ 157 __u32 io_int_word; /* 0x0c0 */ 158 }; 159 160 struct kvm_s390_ext_info { 161 __u32 ext_params; 162 __u64 ext_params2; 163 }; 164 165 #define PGM_OPERATION 0x01 166 #define PGM_PRIVILEGED_OPERATION 0x02 167 #define PGM_EXECUTE 0x03 168 #define PGM_PROTECTION 0x04 169 #define PGM_ADDRESSING 0x05 170 #define PGM_SPECIFICATION 0x06 171 #define PGM_DATA 0x07 172 173 struct kvm_s390_pgm_info { 174 __u16 code; 175 }; 176 177 struct kvm_s390_prefix_info { 178 __u32 address; 179 }; 180 181 struct kvm_s390_extcall_info { 182 __u16 code; 183 }; 184 185 struct kvm_s390_emerg_info { 186 __u16 code; 187 }; 188 189 struct kvm_s390_interrupt_info { 190 struct list_head list; 191 u64 type; 192 union { 193 struct kvm_s390_io_info io; 194 struct kvm_s390_ext_info ext; 195 struct kvm_s390_pgm_info pgm; 196 struct kvm_s390_emerg_info emerg; 197 struct kvm_s390_extcall_info extcall; 198 struct kvm_s390_prefix_info prefix; 199 }; 200 }; 201 202 /* for local_interrupt.action_flags */ 203 #define ACTION_STORE_ON_STOP (1<<0) 204 #define ACTION_STOP_ON_STOP (1<<1) 205 #define ACTION_RELOADVCPU_ON_STOP (1<<2) 206 207 struct kvm_s390_local_interrupt { 208 spinlock_t lock; 209 struct list_head list; 210 atomic_t active; 211 struct kvm_s390_float_interrupt *float_int; 212 int timer_due; /* event indicator for waitqueue below */ 213 wait_queue_head_t wq; 214 atomic_t *cpuflags; 215 unsigned int action_bits; 216 }; 217 218 struct kvm_s390_float_interrupt { 219 spinlock_t lock; 220 struct list_head list; 221 atomic_t active; 222 int next_rr_cpu; 223 unsigned long idle_mask[(KVM_MAX_VCPUS + sizeof(long) - 1) 224 / sizeof(long)]; 225 struct kvm_s390_local_interrupt *local_int[KVM_MAX_VCPUS]; 226 }; 227 228 229 struct kvm_vcpu_arch { 230 struct kvm_s390_sie_block *sie_block; 231 s390_fp_regs host_fpregs; 232 unsigned int host_acrs[NUM_ACRS]; 233 s390_fp_regs guest_fpregs; 234 struct kvm_s390_local_interrupt local_int; 235 struct hrtimer ckc_timer; 236 struct tasklet_struct tasklet; 237 union { 238 struct cpuid cpu_id; 239 u64 stidp_data; 240 }; 241 struct gmap *gmap; 242 }; 243 244 struct kvm_vm_stat { 245 u32 remote_tlb_flush; 246 }; 247 248 struct kvm_arch_memory_slot { 249 }; 250 251 struct kvm_arch{ 252 struct sca_block *sca; 253 debug_info_t *dbf; 254 struct kvm_s390_float_interrupt float_int; 255 struct gmap *gmap; 256 }; 257 258 extern int sie64a(struct kvm_s390_sie_block *, u64 *); 259 #endif 260