arch/powerpc/include/asm/kvm_host.h

   1 /*
   2  * This program is free software; you can redistribute it and/or modify
   3  * it under the terms of the GNU General Public License, version 2, as
   4  * published by the Free Software Foundation.
   5  *
   6  * This program is distributed in the hope that it will be useful,
   7  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9  * GNU General Public License for more details.
  10  *
  11  * You should have received a copy of the GNU General Public License
  12  * along with this program; if not, write to the Free Software
  13  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  14  *
  15  * Copyright IBM Corp. 2007
  16  *
  17  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
  18  */
  19
  20 #ifndef __POWERPC_KVM_HOST_H__
  21 #define __POWERPC_KVM_HOST_H__
  22
  23 #include <linux/mutex.h>
  24 #include <linux/hrtimer.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/types.h>
  27 #include <linux/kvm_types.h>
  28 #include <asm/kvm_asm.h>
  29
  30 #define KVM_MAX_VCPUS 1
  31 #define KVM_MEMORY_SLOTS 32
  32 /* memory slots that does not exposed to userspace */
  33 #define KVM_PRIVATE_MEM_SLOTS 4
  34
  35 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
  36
  37 /* We don't currently support large pages. */
  38 #define KVM_NR_PAGE_SIZES       1
  39 #define KVM_PAGES_PER_HPAGE(x)  (1UL<<31)
  40
  41 #define HPTEG_CACHE_NUM 1024
  42
  43 struct kvm;
  44 struct kvm_run;
  45 struct kvm_vcpu;
  46
  47 struct kvm_vm_stat {
  48         u32 remote_tlb_flush;
  49 };
  50
  51 struct kvm_vcpu_stat {
  52         u32 sum_exits;
  53         u32 mmio_exits;
  54         u32 dcr_exits;
  55         u32 signal_exits;
  56         u32 light_exits;
  57         /* Account for special types of light exits: */
  58         u32 itlb_real_miss_exits;
  59         u32 itlb_virt_miss_exits;
  60         u32 dtlb_real_miss_exits;
  61         u32 dtlb_virt_miss_exits;
  62         u32 syscall_exits;
  63         u32 isi_exits;
  64         u32 dsi_exits;
  65         u32 emulated_inst_exits;
  66         u32 dec_exits;
  67         u32 ext_intr_exits;
  68         u32 halt_wakeup;
  69 #ifdef CONFIG_PPC64
  70         u32 pf_storage;
  71         u32 pf_instruc;
  72         u32 sp_storage;
  73         u32 sp_instruc;
  74         u32 queue_intr;
  75         u32 ld;
  76         u32 ld_slow;
  77         u32 st;
  78         u32 st_slow;
  79 #endif
  80 };
  81
  82 enum kvm_exit_types {
  83         MMIO_EXITS,
  84         DCR_EXITS,
  85         SIGNAL_EXITS,
  86         ITLB_REAL_MISS_EXITS,
  87         ITLB_VIRT_MISS_EXITS,
  88         DTLB_REAL_MISS_EXITS,
  89         DTLB_VIRT_MISS_EXITS,
  90         SYSCALL_EXITS,
  91         ISI_EXITS,
  92         DSI_EXITS,
  93         EMULATED_INST_EXITS,
  94         EMULATED_MTMSRWE_EXITS,
  95         EMULATED_WRTEE_EXITS,
  96         EMULATED_MTSPR_EXITS,
  97         EMULATED_MFSPR_EXITS,
  98         EMULATED_MTMSR_EXITS,
  99         EMULATED_MFMSR_EXITS,
 100         EMULATED_TLBSX_EXITS,
 101         EMULATED_TLBWE_EXITS,
 102         EMULATED_RFI_EXITS,
 103         DEC_EXITS,
 104         EXT_INTR_EXITS,
 105         HALT_WAKEUP,
 106         USR_PR_INST,
 107         FP_UNAVAIL,
 108         DEBUG_EXITS,
 109         TIMEINGUEST,
 110         __NUMBER_OF_KVM_EXIT_TYPES
 111 };
 112
 113 /* allow access to big endian 32bit upper/lower parts and 64bit var */
 114 struct kvmppc_exit_timing {
 115         union {
 116                 u64 tv64;
 117                 struct {
 118                         u32 tbu, tbl;
 119                 } tv32;
 120         };
 121 };
 122
 123 struct kvm_arch {
 124 };
 125
 126 struct kvmppc_pte {
 127         u64 eaddr;
 128         u64 vpage;
 129         u64 raddr;
 130         bool may_read;
 131         bool may_write;
 132         bool may_execute;
 133 };
 134
 135 struct kvmppc_mmu {
 136         /* book3s_64 only */
 137         void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
 138         u64  (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
 139         u64  (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
 140         void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
 141         void (*slbia)(struct kvm_vcpu *vcpu);
 142         /* book3s */
 143         void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
 144         u32  (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
 145         int  (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
 146         void (*reset_msr)(struct kvm_vcpu *vcpu);
 147         void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
 148         int  (*esid_to_vsid)(struct kvm_vcpu *vcpu, u64 esid, u64 *vsid);
 149         u64  (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
 150         bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
 151 };
 152
 153 struct hpte_cache {
 154         u64 host_va;
 155         u64 pfn;
 156         ulong slot;
 157         struct kvmppc_pte pte;
 158 };
 159
 160 struct kvm_vcpu_arch {
 161         ulong host_stack;
 162         u32 host_pid;
 163 #ifdef CONFIG_PPC64
 164         ulong host_msr;
 165         ulong host_r2;
 166         void *host_retip;
 167         ulong trampoline_lowmem;
 168         ulong trampoline_enter;
 169         ulong highmem_handler;
 170         ulong host_paca_phys;
 171         struct kvmppc_mmu mmu;
 172 #endif
 173
 174         u64 fpr[32];
 175         ulong gpr[32];
 176
 177         ulong pc;
 178         u32 cr;
 179         ulong ctr;
 180         ulong lr;
 181         ulong xer;
 182
 183         ulong msr;
 184 #ifdef CONFIG_PPC64
 185         ulong shadow_msr;
 186         ulong hflags;
 187 #endif
 188         u32 mmucr;
 189         ulong sprg0;
 190         ulong sprg1;
 191         ulong sprg2;
 192         ulong sprg3;
 193         ulong sprg4;
 194         ulong sprg5;
 195         ulong sprg6;
 196         ulong sprg7;
 197         ulong srr0;
 198         ulong srr1;
 199         ulong csrr0;
 200         ulong csrr1;
 201         ulong dsrr0;
 202         ulong dsrr1;
 203         ulong dear;
 204         ulong esr;
 205         u32 dec;
 206         u32 decar;
 207         u32 tbl;
 208         u32 tbu;
 209         u32 tcr;
 210         u32 tsr;
 211         u32 ivor[64];
 212         ulong ivpr;
 213         u32 pir;
 214         u32 pvr;
 215
 216         u32 shadow_pid;
 217         u32 pid;
 218         u32 swap_pid;
 219
 220         u32 ccr0;
 221         u32 ccr1;
 222         u32 dbcr0;
 223         u32 dbcr1;
 224         u32 dbsr;
 225
 226 #ifdef CONFIG_KVM_EXIT_TIMING
 227         struct kvmppc_exit_timing timing_exit;
 228         struct kvmppc_exit_timing timing_last_enter;
 229         u32 last_exit_type;
 230         u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
 231         u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 232         u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 233         u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 234         u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 235         u64 timing_last_exit;
 236         struct dentry *debugfs_exit_timing;
 237 #endif
 238
 239         u32 last_inst;
 240 #ifdef CONFIG_PPC64
 241         ulong fault_dsisr;
 242 #endif
 243         ulong fault_dear;
 244         ulong fault_esr;
 245         gpa_t paddr_accessed;
 246
 247         u8 io_gpr; /* GPR used as IO source/target */
 248         u8 mmio_is_bigendian;
 249         u8 dcr_needed;
 250         u8 dcr_is_write;
 251
 252         u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
 253
 254         struct hrtimer dec_timer;
 255         struct tasklet_struct tasklet;
 256         u64 dec_jiffies;
 257         unsigned long pending_exceptions;
 258
 259 #ifdef CONFIG_PPC64
 260         struct hpte_cache hpte_cache[HPTEG_CACHE_NUM];
 261         int hpte_cache_offset;
 262 #endif
 263 };
 264
 265 #endif /* __POWERPC_KVM_HOST_H__ */