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 27struct sca_entry { 28 atomic_t scn; 29 __u64 reserved; 30 __u64 sda; 31 __u64 reserved2[2]; 32} __attribute__((packed)); 33 34 35struct 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_SHIFT(x) (PAGE_SHIFT + ((x) - 1) * 8) 45#define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x)) 46#define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1)) 47#define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE) 48 49#define CPUSTAT_HOST 0x80000000 50#define CPUSTAT_WAIT 0x10000000 51#define CPUSTAT_ECALL_PEND 0x08000000 52#define CPUSTAT_STOP_INT 0x04000000 53#define CPUSTAT_IO_INT 0x02000000 54#define CPUSTAT_EXT_INT 0x01000000 55#define CPUSTAT_RUNNING 0x00800000 56#define CPUSTAT_RETAINED 0x00400000 57#define CPUSTAT_TIMING_SUB 0x00020000 58#define CPUSTAT_SIE_SUB 0x00010000 59#define CPUSTAT_RRF 0x00008000 60#define CPUSTAT_SLSV 0x00004000 61#define CPUSTAT_SLSR 0x00002000 62#define CPUSTAT_ZARCH 0x00000800 63#define CPUSTAT_MCDS 0x00000100 64#define CPUSTAT_SM 0x00000080 65#define CPUSTAT_G 0x00000008 66#define CPUSTAT_J 0x00000002 67#define CPUSTAT_P 0x00000001 68 69struct kvm_s390_sie_block { 70 atomic_t cpuflags; /* 0x0000 */ 71 __u32 prefix; /* 0x0004 */ 72 __u8 reserved8[32]; /* 0x0008 */ 73 __u64 cputm; /* 0x0028 */ 74 __u64 ckc; /* 0x0030 */ 75 __u64 epoch; /* 0x0038 */ 76 __u8 reserved40[4]; /* 0x0040 */ 77#define LCTL_CR0 0x8000 78 __u16 lctl; /* 0x0044 */ 79 __s16 icpua; /* 0x0046 */ 80 __u32 ictl; /* 0x0048 */ 81 __u32 eca; /* 0x004c */ 82 __u8 icptcode; /* 0x0050 */ 83 __u8 reserved51; /* 0x0051 */ 84 __u16 ihcpu; /* 0x0052 */ 85 __u8 reserved54[2]; /* 0x0054 */ 86 __u16 ipa; /* 0x0056 */ 87 __u32 ipb; /* 0x0058 */ 88 __u32 scaoh; /* 0x005c */ 89 __u8 reserved60; /* 0x0060 */ 90 __u8 ecb; /* 0x0061 */ 91 __u8 reserved62[2]; /* 0x0062 */ 92 __u32 scaol; /* 0x0064 */ 93 __u8 reserved68[4]; /* 0x0068 */ 94 __u32 todpr; /* 0x006c */ 95 __u8 reserved70[16]; /* 0x0070 */ 96 __u64 gmsor; /* 0x0080 */ 97 __u64 gmslm; /* 0x0088 */ 98 psw_t gpsw; /* 0x0090 */ 99 __u64 gg14; /* 0x00a0 */ 100 __u64 gg15; /* 0x00a8 */ 101 __u8 reservedb0[30]; /* 0x00b0 */ 102 __u16 iprcc; /* 0x00ce */ 103 __u8 reservedd0[48]; /* 0x00d0 */ 104 __u64 gcr[16]; /* 0x0100 */ 105 __u64 gbea; /* 0x0180 */ 106 __u8 reserved188[24]; /* 0x0188 */ 107 __u32 fac; /* 0x01a0 */ 108 __u8 reserved1a4[92]; /* 0x01a4 */ 109} __attribute__((packed)); 110 111struct kvm_vcpu_stat { 112 u32 exit_userspace; 113 u32 exit_null; 114 u32 exit_external_request; 115 u32 exit_external_interrupt; 116 u32 exit_stop_request; 117 u32 exit_validity; 118 u32 exit_instruction; 119 u32 instruction_lctl; 120 u32 instruction_lctlg; 121 u32 exit_program_interruption; 122 u32 exit_instr_and_program; 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_sigp_sense; 141 u32 instruction_sigp_emergency; 142 u32 instruction_sigp_stop; 143 u32 instruction_sigp_arch; 144 u32 instruction_sigp_prefix; 145 u32 instruction_sigp_restart; 146 u32 diagnose_44; 147}; 148 149struct kvm_s390_io_info { 150 __u16 subchannel_id; /* 0x0b8 */ 151 __u16 subchannel_nr; /* 0x0ba */ 152 __u32 io_int_parm; /* 0x0bc */ 153 __u32 io_int_word; /* 0x0c0 */ 154}; 155 156struct kvm_s390_ext_info { 157 __u32 ext_params; 158 __u64 ext_params2; 159}; 160 161#define PGM_OPERATION 0x01 162#define PGM_PRIVILEGED_OPERATION 0x02 163#define PGM_EXECUTE 0x03 164#define PGM_PROTECTION 0x04 165#define PGM_ADDRESSING 0x05 166#define PGM_SPECIFICATION 0x06 167#define PGM_DATA 0x07 168 169struct kvm_s390_pgm_info { 170 __u16 code; 171}; 172 173struct kvm_s390_prefix_info { 174 __u32 address; 175}; 176 177struct kvm_s390_interrupt_info { 178 struct list_head list; 179 u64 type; 180 union { 181 struct kvm_s390_io_info io; 182 struct kvm_s390_ext_info ext; 183 struct kvm_s390_pgm_info pgm; 184 struct kvm_s390_prefix_info prefix; 185 }; 186}; 187 188/* for local_interrupt.action_flags */ 189#define ACTION_STORE_ON_STOP (1<<0) 190#define ACTION_STOP_ON_STOP (1<<1) 191#define ACTION_RELOADVCPU_ON_STOP (1<<2) 192 193struct kvm_s390_local_interrupt { 194 spinlock_t lock; 195 struct list_head list; 196 atomic_t active; 197 struct kvm_s390_float_interrupt *float_int; 198 int timer_due; /* event indicator for waitqueue below */ 199 wait_queue_head_t wq; 200 atomic_t *cpuflags; 201 unsigned int action_bits; 202}; 203 204struct kvm_s390_float_interrupt { 205 spinlock_t lock; 206 struct list_head list; 207 atomic_t active; 208 int next_rr_cpu; 209 unsigned long idle_mask [(64 + sizeof(long) - 1) / sizeof(long)]; 210 struct kvm_s390_local_interrupt *local_int[64]; 211}; 212 213 214struct kvm_vcpu_arch { 215 struct kvm_s390_sie_block *sie_block; 216 unsigned long guest_gprs[16]; 217 s390_fp_regs host_fpregs; 218 unsigned int host_acrs[NUM_ACRS]; 219 s390_fp_regs guest_fpregs; 220 unsigned int guest_acrs[NUM_ACRS]; 221 struct kvm_s390_local_interrupt local_int; 222 struct hrtimer ckc_timer; 223 struct tasklet_struct tasklet; 224 union { 225 struct cpuid cpu_id; 226 u64 stidp_data; 227 }; 228}; 229 230struct kvm_vm_stat { 231 u32 remote_tlb_flush; 232}; 233 234struct kvm_arch{ 235 struct sca_block *sca; 236 debug_info_t *dbf; 237 struct kvm_s390_float_interrupt float_int; 238}; 239 240extern int sie64a(struct kvm_s390_sie_block *, unsigned long *); 241#endif 242