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 lppaca;
  63 struct slb_shadow;
  64 struct dtl;
  65
  66 struct kvm_vm_stat {
  67         u32 remote_tlb_flush;
  68 };
  69
  70 struct kvm_vcpu_stat {
  71         u32 sum_exits;
  72         u32 mmio_exits;
  73         u32 dcr_exits;
  74         u32 signal_exits;
  75         u32 light_exits;
  76         /* Account for special types of light exits: */
  77         u32 itlb_real_miss_exits;
  78         u32 itlb_virt_miss_exits;
  79         u32 dtlb_real_miss_exits;
  80         u32 dtlb_virt_miss_exits;
  81         u32 syscall_exits;
  82         u32 isi_exits;
  83         u32 dsi_exits;
  84         u32 emulated_inst_exits;
  85         u32 dec_exits;
  86         u32 ext_intr_exits;
  87         u32 halt_wakeup;
  88 #ifdef CONFIG_PPC_BOOK3S
  89         u32 pf_storage;
  90         u32 pf_instruc;
  91         u32 sp_storage;
  92         u32 sp_instruc;
  93         u32 queue_intr;
  94         u32 ld;
  95         u32 ld_slow;
  96         u32 st;
  97         u32 st_slow;
  98 #endif
  99 };
 100
 101 enum kvm_exit_types {
 102         MMIO_EXITS,
 103         DCR_EXITS,
 104         SIGNAL_EXITS,
 105         ITLB_REAL_MISS_EXITS,
 106         ITLB_VIRT_MISS_EXITS,
 107         DTLB_REAL_MISS_EXITS,
 108         DTLB_VIRT_MISS_EXITS,
 109         SYSCALL_EXITS,
 110         ISI_EXITS,
 111         DSI_EXITS,
 112         EMULATED_INST_EXITS,
 113         EMULATED_MTMSRWE_EXITS,
 114         EMULATED_WRTEE_EXITS,
 115         EMULATED_MTSPR_EXITS,
 116         EMULATED_MFSPR_EXITS,
 117         EMULATED_MTMSR_EXITS,
 118         EMULATED_MFMSR_EXITS,
 119         EMULATED_TLBSX_EXITS,
 120         EMULATED_TLBWE_EXITS,
 121         EMULATED_RFI_EXITS,
 122         DEC_EXITS,
 123         EXT_INTR_EXITS,
 124         HALT_WAKEUP,
 125         USR_PR_INST,
 126         FP_UNAVAIL,
 127         DEBUG_EXITS,
 128         TIMEINGUEST,
 129         __NUMBER_OF_KVM_EXIT_TYPES
 130 };
 131
 132 /* allow access to big endian 32bit upper/lower parts and 64bit var */
 133 struct kvmppc_exit_timing {
 134         union {
 135                 u64 tv64;
 136                 struct {
 137                         u32 tbu, tbl;
 138                 } tv32;
 139         };
 140 };
 141
 142 struct kvmppc_pginfo {
 143         unsigned long pfn;
 144         atomic_t refcnt;
 145 };
 146
 147 struct kvmppc_spapr_tce_table {
 148         struct list_head list;
 149         struct kvm *kvm;
 150         u64 liobn;
 151         u32 window_size;
 152         struct page *pages[0];
 153 };
 154
 155 struct kvm_arch {
 156 #ifdef CONFIG_KVM_BOOK3S_64_HV
 157         unsigned long hpt_virt;
 158         unsigned long ram_npages;
 159         unsigned long ram_psize;
 160         unsigned long ram_porder;
 161         struct kvmppc_pginfo *ram_pginfo;
 162         unsigned int lpid;
 163         unsigned int host_lpid;
 164         unsigned long host_lpcr;
 165         unsigned long sdr1;
 166         unsigned long host_sdr1;
 167         int tlbie_lock;
 168         struct list_head spapr_tce_tables;
 169         unsigned short last_vcpu[NR_CPUS];
 170 #endif /* CONFIG_KVM_BOOK3S_64_HV */
 171 };
 172
 173 struct kvmppc_pte {
 174         ulong eaddr;
 175         u64 vpage;
 176         ulong raddr;
 177         bool may_read           : 1;
 178         bool may_write          : 1;
 179         bool may_execute        : 1;
 180 };
 181
 182 struct kvmppc_mmu {
 183         /* book3s_64 only */
 184         void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
 185         u64  (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
 186         u64  (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
 187         void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
 188         void (*slbia)(struct kvm_vcpu *vcpu);
 189         /* book3s */
 190         void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
 191         u32  (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
 192         int  (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
 193         void (*reset_msr)(struct kvm_vcpu *vcpu);
 194         void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
 195         int  (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
 196         u64  (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
 197         bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
 198 };
 199
 200 struct kvmppc_slb {
 201         u64 esid;
 202         u64 vsid;
 203         u64 orige;
 204         u64 origv;
 205         bool valid      : 1;
 206         bool Ks         : 1;
 207         bool Kp         : 1;
 208         bool nx         : 1;
 209         bool large      : 1;    /* PTEs are 16MB */
 210         bool tb         : 1;    /* 1TB segment */
 211         bool class      : 1;
 212 };
 213
 214 struct kvm_vcpu_arch {
 215         ulong host_stack;
 216         u32 host_pid;
 217 #ifdef CONFIG_PPC_BOOK3S
 218         ulong host_msr;
 219         ulong host_r2;
 220         void *host_retip;
 221         ulong trampoline_lowmem;
 222         ulong trampoline_enter;
 223         ulong highmem_handler;
 224         ulong rmcall;
 225         ulong host_paca_phys;
 226         struct kvmppc_slb slb[64];
 227         int slb_max;            /* 1 + index of last valid entry in slb[] */
 228         int slb_nr;             /* total number of entries in SLB */
 229         struct kvmppc_mmu mmu;
 230 #endif
 231
 232         ulong gpr[32];
 233
 234         u64 fpr[32];
 235         u64 fpscr;
 236
 237 #ifdef CONFIG_SPE
 238         ulong evr[32];
 239         ulong spefscr;
 240         ulong host_spefscr;
 241         u64 acc;
 242 #endif
 243 #ifdef CONFIG_ALTIVEC
 244         vector128 vr[32];
 245         vector128 vscr;
 246 #endif
 247
 248 #ifdef CONFIG_VSX
 249         u64 vsr[64];
 250 #endif
 251
 252 #ifdef CONFIG_PPC_BOOK3S
 253         /* For Gekko paired singles */
 254         u32 qpr[32];
 255 #endif
 256
 257         ulong pc;
 258         ulong ctr;
 259         ulong lr;
 260
 261         ulong xer;
 262         u32 cr;
 263
 264 #ifdef CONFIG_PPC_BOOK3S
 265         ulong hflags;
 266         ulong guest_owned_ext;
 267         ulong purr;
 268         ulong spurr;
 269         ulong lpcr;
 270         ulong dscr;
 271         ulong amr;
 272         ulong uamor;
 273         u32 ctrl;
 274         ulong dabr;
 275 #endif
 276         u32 vrsave; /* also USPRG0 */
 277         u32 mmucr;
 278         ulong shadow_msr;
 279         ulong sprg4;
 280         ulong sprg5;
 281         ulong sprg6;
 282         ulong sprg7;
 283         ulong csrr0;
 284         ulong csrr1;
 285         ulong dsrr0;
 286         ulong dsrr1;
 287         ulong mcsrr0;
 288         ulong mcsrr1;
 289         ulong mcsr;
 290         ulong esr;
 291         u32 dec;
 292         u32 decar;
 293         u32 tbl;
 294         u32 tbu;
 295         u32 tcr;
 296         u32 tsr;
 297         u32 ivor[64];
 298         ulong ivpr;
 299         u32 pir;
 300         u32 pvr;
 301
 302         u32 shadow_pid;
 303         u32 shadow_pid1;
 304         u32 pid;
 305         u32 swap_pid;
 306
 307         u32 ccr0;
 308         u32 ccr1;
 309         u32 dbcr0;
 310         u32 dbcr1;
 311         u32 dbsr;
 312
 313         u64 mmcr[3];
 314         u32 pmc[6];
 315
 316 #ifdef CONFIG_KVM_EXIT_TIMING
 317         struct mutex exit_timing_lock;
 318         struct kvmppc_exit_timing timing_exit;
 319         struct kvmppc_exit_timing timing_last_enter;
 320         u32 last_exit_type;
 321         u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
 322         u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 323         u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 324         u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 325         u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 326         u64 timing_last_exit;
 327         struct dentry *debugfs_exit_timing;
 328 #endif
 329
 330 #ifdef CONFIG_PPC_BOOK3S
 331         ulong fault_dar;
 332         u32 fault_dsisr;
 333 #endif
 334
 335 #ifdef CONFIG_BOOKE
 336         ulong fault_dear;
 337         ulong fault_esr;
 338         ulong queued_dear;
 339         ulong queued_esr;
 340 #endif
 341         gpa_t paddr_accessed;
 342
 343         u8 io_gpr; /* GPR used as IO source/target */
 344         u8 mmio_is_bigendian;
 345         u8 mmio_sign_extend;
 346         u8 dcr_needed;
 347         u8 dcr_is_write;
 348         u8 osi_needed;
 349         u8 osi_enabled;
 350         u8 hcall_needed;
 351
 352         u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
 353
 354         struct hrtimer dec_timer;
 355         struct tasklet_struct tasklet;
 356         u64 dec_jiffies;
 357         u64 dec_expires;
 358         unsigned long pending_exceptions;
 359         u16 last_cpu;
 360         u8 ceded;
 361         u8 prodded;
 362         u32 last_inst;
 363
 364         struct lppaca *vpa;
 365         struct slb_shadow *slb_shadow;
 366         struct dtl *dtl;
 367         struct dtl *dtl_end;
 368         int trap;
 369         struct kvm_vcpu_arch_shared *shared;
 370         unsigned long magic_page_pa; /* phys addr to map the magic page to */
 371         unsigned long magic_page_ea; /* effect. addr to map the magic page to */
 372
 373 #ifdef CONFIG_KVM_BOOK3S_64_HV
 374         struct kvm_vcpu_arch_shared shregs;
 375 #endif
 376 };
 377
 378 #endif /* __POWERPC_KVM_HOST_H__ */