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_HOST 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[16]; /* 0x0070 */ 97 __u64 gmsor; /* 0x0080 */ 98 __u64 gmslm; /* 0x0088 */ 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_emergency_signal; 125 u32 deliver_service_signal; 126 u32 deliver_virtio_interrupt; 127 u32 deliver_stop_signal; 128 u32 deliver_prefix_signal; 129 u32 deliver_restart_signal; 130 u32 deliver_program_int; 131 u32 exit_wait_state; 132 u32 instruction_stidp; 133 u32 instruction_spx; 134 u32 instruction_stpx; 135 u32 instruction_stap; 136 u32 instruction_storage_key; 137 u32 instruction_stsch; 138 u32 instruction_chsc; 139 u32 instruction_stsi; 140 u32 instruction_stfl; 141 u32 instruction_sigp_sense; 142 u32 instruction_sigp_emergency; 143 u32 instruction_sigp_stop; 144 u32 instruction_sigp_arch; 145 u32 instruction_sigp_prefix; 146 u32 instruction_sigp_restart; 147 u32 diagnose_44; 148 }; 149 150 struct kvm_s390_io_info { 151 __u16 subchannel_id; /* 0x0b8 */ 152 __u16 subchannel_nr; /* 0x0ba */ 153 __u32 io_int_parm; /* 0x0bc */ 154 __u32 io_int_word; /* 0x0c0 */ 155 }; 156 157 struct kvm_s390_ext_info { 158 __u32 ext_params; 159 __u64 ext_params2; 160 }; 161 162 #define PGM_OPERATION 0x01 163 #define PGM_PRIVILEGED_OPERATION 0x02 164 #define PGM_EXECUTE 0x03 165 #define PGM_PROTECTION 0x04 166 #define PGM_ADDRESSING 0x05 167 #define PGM_SPECIFICATION 0x06 168 #define PGM_DATA 0x07 169 170 struct kvm_s390_pgm_info { 171 __u16 code; 172 }; 173 174 struct kvm_s390_prefix_info { 175 __u32 address; 176 }; 177 178 struct kvm_s390_interrupt_info { 179 struct list_head list; 180 u64 type; 181 union { 182 struct kvm_s390_io_info io; 183 struct kvm_s390_ext_info ext; 184 struct kvm_s390_pgm_info pgm; 185 struct kvm_s390_prefix_info prefix; 186 }; 187 }; 188 189 /* for local_interrupt.action_flags */ 190 #define ACTION_STORE_ON_STOP (1<<0) 191 #define ACTION_STOP_ON_STOP (1<<1) 192 #define ACTION_RELOADVCPU_ON_STOP (1<<2) 193 194 struct kvm_s390_local_interrupt { 195 spinlock_t lock; 196 struct list_head list; 197 atomic_t active; 198 struct kvm_s390_float_interrupt *float_int; 199 int timer_due; /* event indicator for waitqueue below */ 200 wait_queue_head_t wq; 201 atomic_t *cpuflags; 202 unsigned int action_bits; 203 }; 204 205 struct kvm_s390_float_interrupt { 206 spinlock_t lock; 207 struct list_head list; 208 atomic_t active; 209 int next_rr_cpu; 210 unsigned long idle_mask [(64 + sizeof(long) - 1) / sizeof(long)]; 211 struct kvm_s390_local_interrupt *local_int[64]; 212 }; 213 214 215 struct kvm_vcpu_arch { 216 struct kvm_s390_sie_block *sie_block; 217 unsigned long guest_gprs[16]; 218 s390_fp_regs host_fpregs; 219 unsigned int host_acrs[NUM_ACRS]; 220 s390_fp_regs guest_fpregs; 221 unsigned int guest_acrs[NUM_ACRS]; 222 struct kvm_s390_local_interrupt local_int; 223 struct hrtimer ckc_timer; 224 struct tasklet_struct tasklet; 225 union { 226 struct cpuid cpu_id; 227 u64 stidp_data; 228 }; 229 }; 230 231 struct kvm_vm_stat { 232 u32 remote_tlb_flush; 233 }; 234 235 struct kvm_arch{ 236 struct sca_block *sca; 237 debug_info_t *dbf; 238 struct kvm_s390_float_interrupt float_int; 239 }; 240 241 extern int sie64a(struct kvm_s390_sie_block *, unsigned long *); 242 #endif 243