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 <linux/kvm_para.h>
  29 #include <asm/kvm_asm.h>
  30
  31 #define KVM_MAX_VCPUS 1
  32 #define KVM_MEMORY_SLOTS 32
  33 /* memory slots that does not exposed to userspace */
  34 #define KVM_PRIVATE_MEM_SLOTS 4
  35
  36 #ifdef CONFIG_KVM_MMIO
  37 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
  38 #endif
  39
  40 /* We don't currently support large pages. */
  41 #define KVM_HPAGE_GFN_SHIFT(x)  0
  42 #define KVM_NR_PAGE_SIZES       1
  43 #define KVM_PAGES_PER_HPAGE(x)  (1UL<<31)
  44
  45 #define HPTEG_CACHE_NUM                 (1 << 15)
  46 #define HPTEG_HASH_BITS_PTE             13
  47 #define HPTEG_HASH_BITS_PTE_LONG        12
  48 #define HPTEG_HASH_BITS_VPTE            13
  49 #define HPTEG_HASH_BITS_VPTE_LONG       5
  50 #define HPTEG_HASH_NUM_PTE              (1 << HPTEG_HASH_BITS_PTE)
  51 #define HPTEG_HASH_NUM_PTE_LONG         (1 << HPTEG_HASH_BITS_PTE_LONG)
  52 #define HPTEG_HASH_NUM_VPTE             (1 << HPTEG_HASH_BITS_VPTE)
  53 #define HPTEG_HASH_NUM_VPTE_LONG        (1 << HPTEG_HASH_BITS_VPTE_LONG)
  54
  55 /* Physical Address Mask - allowed range of real mode RAM access */
  56 #define KVM_PAM                 0x0fffffffffffffffULL
  57
  58 struct kvm;
  59 struct kvm_run;
  60 struct kvm_vcpu;
  61
  62 struct kvm_vm_stat {
  63         u32 remote_tlb_flush;
  64 };
  65
  66 struct kvm_vcpu_stat {
  67         u32 sum_exits;
  68         u32 mmio_exits;
  69         u32 dcr_exits;
  70         u32 signal_exits;
  71         u32 light_exits;
  72         /* Account for special types of light exits: */
  73         u32 itlb_real_miss_exits;
  74         u32 itlb_virt_miss_exits;
  75         u32 dtlb_real_miss_exits;
  76         u32 dtlb_virt_miss_exits;
  77         u32 syscall_exits;
  78         u32 isi_exits;
  79         u32 dsi_exits;
  80         u32 emulated_inst_exits;
  81         u32 dec_exits;
  82         u32 ext_intr_exits;
  83         u32 halt_wakeup;
  84 #ifdef CONFIG_PPC_BOOK3S
  85         u32 pf_storage;
  86         u32 pf_instruc;
  87         u32 sp_storage;
  88         u32 sp_instruc;
  89         u32 queue_intr;
  90         u32 ld;
  91         u32 ld_slow;
  92         u32 st;
  93         u32 st_slow;
  94 #endif
  95 };
  96
  97 enum kvm_exit_types {
  98         MMIO_EXITS,
  99         DCR_EXITS,
 100         SIGNAL_EXITS,
 101         ITLB_REAL_MISS_EXITS,
 102         ITLB_VIRT_MISS_EXITS,
 103         DTLB_REAL_MISS_EXITS,
 104         DTLB_VIRT_MISS_EXITS,
 105         SYSCALL_EXITS,
 106         ISI_EXITS,
 107         DSI_EXITS,
 108         EMULATED_INST_EXITS,
 109         EMULATED_MTMSRWE_EXITS,
 110         EMULATED_WRTEE_EXITS,
 111         EMULATED_MTSPR_EXITS,
 112         EMULATED_MFSPR_EXITS,
 113         EMULATED_MTMSR_EXITS,
 114         EMULATED_MFMSR_EXITS,
 115         EMULATED_TLBSX_EXITS,
 116         EMULATED_TLBWE_EXITS,
 117         EMULATED_RFI_EXITS,
 118         DEC_EXITS,
 119         EXT_INTR_EXITS,
 120         HALT_WAKEUP,
 121         USR_PR_INST,
 122         FP_UNAVAIL,
 123         DEBUG_EXITS,
 124         TIMEINGUEST,
 125         __NUMBER_OF_KVM_EXIT_TYPES
 126 };
 127
 128 /* allow access to big endian 32bit upper/lower parts and 64bit var */
 129 struct kvmppc_exit_timing {
 130         union {
 131                 u64 tv64;
 132                 struct {
 133                         u32 tbu, tbl;
 134                 } tv32;
 135         };
 136 };
 137
 138 struct kvmppc_pginfo {
 139         unsigned long pfn;
 140         atomic_t refcnt;
 141 };
 142
 143 struct kvm_arch {
 144 #ifdef CONFIG_KVM_BOOK3S_64_HV
 145         unsigned long hpt_virt;
 146         unsigned long ram_npages;
 147         unsigned long ram_psize;
 148         unsigned long ram_porder;
 149         struct kvmppc_pginfo *ram_pginfo;
 150         unsigned int lpid;
 151         unsigned int host_lpid;
 152         unsigned long host_lpcr;
 153         unsigned long sdr1;
 154         unsigned long host_sdr1;
 155         int tlbie_lock;
 156         unsigned short last_vcpu[NR_CPUS];
 157 #endif /* CONFIG_KVM_BOOK3S_64_HV */
 158 };
 159
 160 struct kvmppc_pte {
 161         ulong eaddr;
 162         u64 vpage;
 163         ulong raddr;
 164         bool may_read           : 1;
 165         bool may_write          : 1;
 166         bool may_execute        : 1;
 167 };
 168
 169 struct kvmppc_mmu {
 170         /* book3s_64 only */
 171         void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
 172         u64  (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
 173         u64  (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
 174         void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
 175         void (*slbia)(struct kvm_vcpu *vcpu);
 176         /* book3s */
 177         void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
 178         u32  (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
 179         int  (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
 180         void (*reset_msr)(struct kvm_vcpu *vcpu);
 181         void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
 182         int  (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
 183         u64  (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
 184         bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
 185 };
 186
 187 struct kvmppc_slb {
 188         u64 esid;
 189         u64 vsid;
 190         u64 orige;
 191         u64 origv;
 192         bool valid      : 1;
 193         bool Ks         : 1;
 194         bool Kp         : 1;
 195         bool nx         : 1;
 196         bool large      : 1;    /* PTEs are 16MB */
 197         bool tb         : 1;    /* 1TB segment */
 198         bool class      : 1;
 199 };
 200
 201 struct kvm_vcpu_arch {
 202         ulong host_stack;
 203         u32 host_pid;
 204 #ifdef CONFIG_PPC_BOOK3S
 205         ulong host_msr;
 206         ulong host_r2;
 207         void *host_retip;
 208         ulong trampoline_lowmem;
 209         ulong trampoline_enter;
 210         ulong highmem_handler;
 211         ulong rmcall;
 212         ulong host_paca_phys;
 213         struct kvmppc_slb slb[64];
 214         int slb_max;            /* 1 + index of last valid entry in slb[] */
 215         int slb_nr;             /* total number of entries in SLB */
 216         struct kvmppc_mmu mmu;
 217 #endif
 218
 219         ulong gpr[32];
 220
 221         u64 fpr[32];
 222         u64 fpscr;
 223
 224 #ifdef CONFIG_SPE
 225         ulong evr[32];
 226         ulong spefscr;
 227         ulong host_spefscr;
 228         u64 acc;
 229 #endif
 230 #ifdef CONFIG_ALTIVEC
 231         vector128 vr[32];
 232         vector128 vscr;
 233 #endif
 234
 235 #ifdef CONFIG_VSX
 236         u64 vsr[64];
 237 #endif
 238
 239 #ifdef CONFIG_PPC_BOOK3S
 240         /* For Gekko paired singles */
 241         u32 qpr[32];
 242 #endif
 243
 244         ulong pc;
 245         ulong ctr;
 246         ulong lr;
 247
 248         ulong xer;
 249         u32 cr;
 250
 251 #ifdef CONFIG_PPC_BOOK3S
 252         ulong hflags;
 253         ulong guest_owned_ext;
 254         ulong purr;
 255         ulong spurr;
 256         ulong lpcr;
 257         ulong dscr;
 258         ulong amr;
 259         ulong uamor;
 260         u32 ctrl;
 261         ulong dabr;
 262 #endif
 263         u32 vrsave; /* also USPRG0 */
 264         u32 mmucr;
 265         ulong shadow_msr;
 266         ulong sprg4;
 267         ulong sprg5;
 268         ulong sprg6;
 269         ulong sprg7;
 270         ulong csrr0;
 271         ulong csrr1;
 272         ulong dsrr0;
 273         ulong dsrr1;
 274         ulong mcsrr0;
 275         ulong mcsrr1;
 276         ulong mcsr;
 277         ulong esr;
 278         u32 dec;
 279         u32 decar;
 280         u32 tbl;
 281         u32 tbu;
 282         u32 tcr;
 283         u32 tsr;
 284         u32 ivor[64];
 285         ulong ivpr;
 286         u32 pir;
 287         u32 pvr;
 288
 289         u32 shadow_pid;
 290         u32 shadow_pid1;
 291         u32 pid;
 292         u32 swap_pid;
 293
 294         u32 ccr0;
 295         u32 ccr1;
 296         u32 dbcr0;
 297         u32 dbcr1;
 298         u32 dbsr;
 299
 300         u64 mmcr[3];
 301         u32 pmc[6];
 302
 303 #ifdef CONFIG_KVM_EXIT_TIMING
 304         struct mutex exit_timing_lock;
 305         struct kvmppc_exit_timing timing_exit;
 306         struct kvmppc_exit_timing timing_last_enter;
 307         u32 last_exit_type;
 308         u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
 309         u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 310         u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 311         u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 312         u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 313         u64 timing_last_exit;
 314         struct dentry *debugfs_exit_timing;
 315 #endif
 316
 317 #ifdef CONFIG_PPC_BOOK3S
 318         ulong fault_dar;
 319         u32 fault_dsisr;
 320 #endif
 321
 322 #ifdef CONFIG_BOOKE
 323         ulong fault_dear;
 324         ulong fault_esr;
 325         ulong queued_dear;
 326         ulong queued_esr;
 327 #endif
 328         gpa_t paddr_accessed;
 329
 330         u8 io_gpr; /* GPR used as IO source/target */
 331         u8 mmio_is_bigendian;
 332         u8 mmio_sign_extend;
 333         u8 dcr_needed;
 334         u8 dcr_is_write;
 335         u8 osi_needed;
 336         u8 osi_enabled;
 337         u8 hcall_needed;
 338
 339         u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
 340
 341         struct hrtimer dec_timer;
 342         struct tasklet_struct tasklet;
 343         u64 dec_jiffies;
 344         u64 dec_expires;
 345         unsigned long pending_exceptions;
 346         u16 last_cpu;
 347         u32 last_inst;
 348         int trap;
 349         struct kvm_vcpu_arch_shared *shared;
 350         unsigned long magic_page_pa; /* phys addr to map the magic page to */
 351         unsigned long magic_page_ea; /* effect. addr to map the magic page to */
 352
 353 #ifdef CONFIG_KVM_BOOK3S_64_HV
 354         struct kvm_vcpu_arch_shared shregs;
 355 #endif
 356 };
 357
 358 #endif /* __POWERPC_KVM_HOST_H__ */