release/src-rt-6.x.4708/linux/linux-2.6.36/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_HPAGE_GFN_SHIFT(x)  0
  39 #define KVM_NR_PAGE_SIZES       1
  40 #define KVM_PAGES_PER_HPAGE(x)  (1UL<<31)
  41
  42 #define HPTEG_CACHE_NUM                 (1 << 15)
  43 #define HPTEG_HASH_BITS_PTE             13
  44 #define HPTEG_HASH_BITS_VPTE            13
  45 #define HPTEG_HASH_BITS_VPTE_LONG       5
  46 #define HPTEG_HASH_NUM_PTE              (1 << HPTEG_HASH_BITS_PTE)
  47 #define HPTEG_HASH_NUM_VPTE             (1 << HPTEG_HASH_BITS_VPTE)
  48 #define HPTEG_HASH_NUM_VPTE_LONG        (1 << HPTEG_HASH_BITS_VPTE_LONG)
  49
  50 struct kvm;
  51 struct kvm_run;
  52 struct kvm_vcpu;
  53
  54 struct kvm_vm_stat {
  55         u32 remote_tlb_flush;
  56 };
  57
  58 struct kvm_vcpu_stat {
  59         u32 sum_exits;
  60         u32 mmio_exits;
  61         u32 dcr_exits;
  62         u32 signal_exits;
  63         u32 light_exits;
  64         /* Account for special types of light exits: */
  65         u32 itlb_real_miss_exits;
  66         u32 itlb_virt_miss_exits;
  67         u32 dtlb_real_miss_exits;
  68         u32 dtlb_virt_miss_exits;
  69         u32 syscall_exits;
  70         u32 isi_exits;
  71         u32 dsi_exits;
  72         u32 emulated_inst_exits;
  73         u32 dec_exits;
  74         u32 ext_intr_exits;
  75         u32 halt_wakeup;
  76 #ifdef CONFIG_PPC_BOOK3S
  77         u32 pf_storage;
  78         u32 pf_instruc;
  79         u32 sp_storage;
  80         u32 sp_instruc;
  81         u32 queue_intr;
  82         u32 ld;
  83         u32 ld_slow;
  84         u32 st;
  85         u32 st_slow;
  86 #endif
  87 };
  88
  89 enum kvm_exit_types {
  90         MMIO_EXITS,
  91         DCR_EXITS,
  92         SIGNAL_EXITS,
  93         ITLB_REAL_MISS_EXITS,
  94         ITLB_VIRT_MISS_EXITS,
  95         DTLB_REAL_MISS_EXITS,
  96         DTLB_VIRT_MISS_EXITS,
  97         SYSCALL_EXITS,
  98         ISI_EXITS,
  99         DSI_EXITS,
 100         EMULATED_INST_EXITS,
 101         EMULATED_MTMSRWE_EXITS,
 102         EMULATED_WRTEE_EXITS,
 103         EMULATED_MTSPR_EXITS,
 104         EMULATED_MFSPR_EXITS,
 105         EMULATED_MTMSR_EXITS,
 106         EMULATED_MFMSR_EXITS,
 107         EMULATED_TLBSX_EXITS,
 108         EMULATED_TLBWE_EXITS,
 109         EMULATED_RFI_EXITS,
 110         DEC_EXITS,
 111         EXT_INTR_EXITS,
 112         HALT_WAKEUP,
 113         USR_PR_INST,
 114         FP_UNAVAIL,
 115         DEBUG_EXITS,
 116         TIMEINGUEST,
 117         __NUMBER_OF_KVM_EXIT_TYPES
 118 };
 119
 120 /* allow access to big endian 32bit upper/lower parts and 64bit var */
 121 struct kvmppc_exit_timing {
 122         union {
 123                 u64 tv64;
 124                 struct {
 125                         u32 tbu, tbl;
 126                 } tv32;
 127         };
 128 };
 129
 130 struct kvm_arch {
 131 };
 132
 133 struct kvmppc_pte {
 134         ulong eaddr;
 135         u64 vpage;
 136         ulong raddr;
 137         bool may_read           : 1;
 138         bool may_write          : 1;
 139         bool may_execute        : 1;
 140 };
 141
 142 struct kvmppc_mmu {
 143         /* book3s_64 only */
 144         void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
 145         u64  (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
 146         u64  (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
 147         void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
 148         void (*slbia)(struct kvm_vcpu *vcpu);
 149         /* book3s */
 150         void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
 151         u32  (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
 152         int  (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
 153         void (*reset_msr)(struct kvm_vcpu *vcpu);
 154         void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
 155         int  (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
 156         u64  (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
 157         bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
 158 };
 159
 160 struct hpte_cache {
 161         struct hlist_node list_pte;
 162         struct hlist_node list_vpte;
 163         struct hlist_node list_vpte_long;
 164         u64 host_va;
 165         u64 pfn;
 166         ulong slot;
 167         struct kvmppc_pte pte;
 168 };
 169
 170 struct kvm_vcpu_arch {
 171         ulong host_stack;
 172         u32 host_pid;
 173 #ifdef CONFIG_PPC_BOOK3S
 174         ulong host_msr;
 175         ulong host_r2;
 176         void *host_retip;
 177         ulong trampoline_lowmem;
 178         ulong trampoline_enter;
 179         ulong highmem_handler;
 180         ulong rmcall;
 181         ulong host_paca_phys;
 182         struct kvmppc_mmu mmu;
 183 #endif
 184
 185         ulong gpr[32];
 186
 187         u64 fpr[32];
 188         u64 fpscr;
 189
 190 #ifdef CONFIG_ALTIVEC
 191         vector128 vr[32];
 192         vector128 vscr;
 193 #endif
 194
 195 #ifdef CONFIG_VSX
 196         u64 vsr[32];
 197 #endif
 198
 199 #ifdef CONFIG_PPC_BOOK3S
 200         /* For Gekko paired singles */
 201         u32 qpr[32];
 202 #endif
 203
 204 #ifdef CONFIG_BOOKE
 205         ulong pc;
 206         ulong ctr;
 207         ulong lr;
 208
 209         ulong xer;
 210         u32 cr;
 211 #endif
 212
 213         ulong msr;
 214 #ifdef CONFIG_PPC_BOOK3S
 215         ulong shadow_msr;
 216         ulong hflags;
 217         ulong guest_owned_ext;
 218 #endif
 219         u32 mmucr;
 220         ulong sprg0;
 221         ulong sprg1;
 222         ulong sprg2;
 223         ulong sprg3;
 224         ulong sprg4;
 225         ulong sprg5;
 226         ulong sprg6;
 227         ulong sprg7;
 228         ulong srr0;
 229         ulong srr1;
 230         ulong csrr0;
 231         ulong csrr1;
 232         ulong dsrr0;
 233         ulong dsrr1;
 234         ulong dear;
 235         ulong esr;
 236         u32 dec;
 237         u32 decar;
 238         u32 tbl;
 239         u32 tbu;
 240         u32 tcr;
 241         u32 tsr;
 242         u32 ivor[64];
 243         ulong ivpr;
 244         u32 pir;
 245         u32 pvr;
 246
 247         u32 shadow_pid;
 248         u32 pid;
 249         u32 swap_pid;
 250
 251         u32 ccr0;
 252         u32 ccr1;
 253         u32 dbcr0;
 254         u32 dbcr1;
 255         u32 dbsr;
 256
 257 #ifdef CONFIG_KVM_EXIT_TIMING
 258         struct kvmppc_exit_timing timing_exit;
 259         struct kvmppc_exit_timing timing_last_enter;
 260         u32 last_exit_type;
 261         u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
 262         u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 263         u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 264         u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 265         u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
 266         u64 timing_last_exit;
 267         struct dentry *debugfs_exit_timing;
 268 #endif
 269
 270 #ifdef CONFIG_BOOKE
 271         u32 last_inst;
 272         ulong fault_dear;
 273         ulong fault_esr;
 274         ulong queued_dear;
 275         ulong queued_esr;
 276 #endif
 277         gpa_t paddr_accessed;
 278
 279         u8 io_gpr; /* GPR used as IO source/target */
 280         u8 mmio_is_bigendian;
 281         u8 mmio_sign_extend;
 282         u8 dcr_needed;
 283         u8 dcr_is_write;
 284         u8 osi_needed;
 285         u8 osi_enabled;
 286
 287         u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
 288
 289         struct hrtimer dec_timer;
 290         struct tasklet_struct tasklet;
 291         u64 dec_jiffies;
 292         unsigned long pending_exceptions;
 293
 294 #ifdef CONFIG_PPC_BOOK3S
 295         struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE];
 296         struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
 297         struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
 298         int hpte_cache_count;
 299 #endif
 300 };
 301
 302 #endif /* __POWERPC_KVM_HOST_H__ */