arch/powerpc/include/asm/kvm_book3s.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 SUSE Linux Products GmbH 2009
  16  *
  17  * Authors: Alexander Graf <agraf@suse.de>
  18  */
  19
  20 #ifndef __ASM_KVM_BOOK3S_H__
  21 #define __ASM_KVM_BOOK3S_H__
  22
  23 #include <linux/types.h>
  24 #include <linux/kvm_host.h>
  25 #include <asm/kvm_book3s_asm.h>
  26
  27 struct kvmppc_bat {
  28         u64 raw;
  29         u32 bepi;
  30         u32 bepi_mask;
  31         u32 brpn;
  32         u8 wimg;
  33         u8 pp;
  34         bool vs         : 1;
  35         bool vp         : 1;
  36 };
  37
  38 struct kvmppc_sid_map {
  39         u64 guest_vsid;
  40         u64 guest_esid;
  41         u64 host_vsid;
  42         bool valid      : 1;
  43 };
  44
  45 #define SID_MAP_BITS    9
  46 #define SID_MAP_NUM     (1 << SID_MAP_BITS)
  47 #define SID_MAP_MASK    (SID_MAP_NUM - 1)
  48
  49 #ifdef CONFIG_PPC_BOOK3S_64
  50 #define SID_CONTEXTS    1
  51 #else
  52 #define SID_CONTEXTS    128
  53 #define VSID_POOL_SIZE  (SID_CONTEXTS * 16)
  54 #endif
  55
  56 struct hpte_cache {
  57         struct hlist_node list_pte;
  58         struct hlist_node list_pte_long;
  59         struct hlist_node list_vpte;
  60         struct hlist_node list_vpte_long;
  61 #ifdef CONFIG_PPC_BOOK3S_64
  62         struct hlist_node list_vpte_64k;
  63 #endif
  64         struct rcu_head rcu_head;
  65         u64 host_vpn;
  66         u64 pfn;
  67         ulong slot;
  68         struct kvmppc_pte pte;
  69         int pagesize;
  70 };
  71
  72 struct kvmppc_vcpu_book3s {
  73         struct kvmppc_sid_map sid_map[SID_MAP_NUM];
  74         struct {
  75                 u64 esid;
  76                 u64 vsid;
  77         } slb_shadow[64];
  78         u8 slb_shadow_max;
  79         struct kvmppc_bat ibat[8];
  80         struct kvmppc_bat dbat[8];
  81         u64 hid[6];
  82         u64 gqr[8];
  83         u64 sdr1;
  84         u64 hior;
  85         u64 msr_mask;
  86 #ifdef CONFIG_PPC_BOOK3S_32
  87         u32 vsid_pool[VSID_POOL_SIZE];
  88         u32 vsid_next;
  89 #else
  90         u64 proto_vsid_first;
  91         u64 proto_vsid_max;
  92         u64 proto_vsid_next;
  93 #endif
  94         int context_id[SID_CONTEXTS];
  95
  96         bool hior_explicit;             /* HIOR is set by ioctl, not PVR */
  97
  98         struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE];
  99         struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG];
 100         struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
 101         struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
 102 #ifdef CONFIG_PPC_BOOK3S_64
 103         struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K];
 104 #endif
 105         int hpte_cache_count;
 106         spinlock_t mmu_lock;
 107 };
 108
 109 #define VSID_REAL       0x07ffffffffc00000ULL
 110 #define VSID_BAT        0x07ffffffffb00000ULL
 111 #define VSID_64K        0x0800000000000000ULL
 112 #define VSID_1T         0x1000000000000000ULL
 113 #define VSID_REAL_DR    0x2000000000000000ULL
 114 #define VSID_REAL_IR    0x4000000000000000ULL
 115 #define VSID_PR         0x8000000000000000ULL
 116
 117 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
 118 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
 119 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
 120 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
 121 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
 122 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
 123 extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
 124 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
 125                                bool iswrite);
 126 extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
 127 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
 128 extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
 129 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
 130 extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
 131                         struct kvm_vcpu *vcpu, unsigned long addr,
 132                         unsigned long status);
 133 extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
 134                         unsigned long slb_v, unsigned long valid);
 135
 136 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
 137 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
 138 extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte);
 139 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
 140 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
 141 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
 142 extern int kvmppc_mmu_hpte_sysinit(void);
 143 extern void kvmppc_mmu_hpte_sysexit(void);
 144 extern int kvmppc_mmu_hv_init(void);
 145 extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc);
 146
 147 /* XXX remove this export when load_last_inst() is generic */
 148 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
 149 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
 150 extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
 151                                           unsigned int vec);
 152 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
 153 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
 154                            bool upper, u32 val);
 155 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
 156 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
 157 extern pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
 158                         bool *writable);
 159 extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
 160                         unsigned long *rmap, long pte_index, int realmode);
 161 extern void kvmppc_update_rmap_change(unsigned long *rmap, unsigned long psize);
 162 extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
 163                         unsigned long pte_index);
 164 void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep,
 165                         unsigned long pte_index);
 166 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
 167                         unsigned long *nb_ret);
 168 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr,
 169                         unsigned long gpa, bool dirty);
 170 extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
 171                         long pte_index, unsigned long pteh, unsigned long ptel,
 172                         pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
 173 extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
 174                         unsigned long pte_index, unsigned long avpn,
 175                         unsigned long *hpret);
 176 extern long kvmppc_hv_get_dirty_log(struct kvm *kvm,
 177                         struct kvm_memory_slot *memslot, unsigned long *map);
 178 extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr,
 179                         unsigned long mask);
 180 extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr);
 181
 182 extern void kvmppc_entry_trampoline(void);
 183 extern void kvmppc_hv_entry_trampoline(void);
 184 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
 185 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
 186 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
 187 extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm);
 188 extern int kvmppc_hcall_impl_pr(unsigned long cmd);
 189 extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd);
 190 extern void kvmppc_copy_to_svcpu(struct kvmppc_book3s_shadow_vcpu *svcpu,
 191                                  struct kvm_vcpu *vcpu);
 192 extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu,
 193                                    struct kvmppc_book3s_shadow_vcpu *svcpu);
 194
 195 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
 196 {
 197         return vcpu->arch.book3s;
 198 }
 199
 200 /* Also add subarch specific defines */
 201
 202 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
 203 #include <asm/kvm_book3s_32.h>
 204 #endif
 205 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
 206 #include <asm/kvm_book3s_64.h>
 207 #endif
 208
 209 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
 210 {
 211         vcpu->arch.gpr[num] = val;
 212 }
 213
 214 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
 215 {
 216         return vcpu->arch.gpr[num];
 217 }
 218
 219 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
 220 {
 221         vcpu->arch.cr = val;
 222 }
 223
 224 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
 225 {
 226         return vcpu->arch.cr;
 227 }
 228
 229 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val)
 230 {
 231         vcpu->arch.xer = val;
 232 }
 233
 234 static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu)
 235 {
 236         return vcpu->arch.xer;
 237 }
 238
 239 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
 240 {
 241         vcpu->arch.ctr = val;
 242 }
 243
 244 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
 245 {
 246         return vcpu->arch.ctr;
 247 }
 248
 249 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
 250 {
 251         vcpu->arch.lr = val;
 252 }
 253
 254 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
 255 {
 256         return vcpu->arch.lr;
 257 }
 258
 259 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
 260 {
 261         vcpu->arch.pc = val;
 262 }
 263
 264 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
 265 {
 266         return vcpu->arch.pc;
 267 }
 268
 269 static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu);
 270 static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
 271 {
 272         return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE);
 273 }
 274
 275 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
 276 {
 277         return vcpu->arch.fault_dar;
 278 }
 279
 280 static inline bool is_kvmppc_resume_guest(int r)
 281 {
 282         return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
 283 }
 284
 285 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm);
 286 static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu)
 287 {
 288         /* Only PR KVM supports the magic page */
 289         return !is_kvmppc_hv_enabled(vcpu->kvm);
 290 }
 291
 292 extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu);
 293 extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu);
 294
 295 /* Magic register values loaded into r3 and r4 before the 'sc' assembly
 296  * instruction for the OSI hypercalls */
 297 #define OSI_SC_MAGIC_R3                 0x113724FA
 298 #define OSI_SC_MAGIC_R4                 0x77810F9B
 299
 300 #define INS_DCBZ                        0x7c0007ec
 301 /* TO = 31 for unconditional trap */
 302 #define INS_TW                          0x7fe00008
 303
 304 /* LPIDs we support with this build -- runtime limit may be lower */
 305 #define KVMPPC_NR_LPIDS                 (LPID_RSVD + 1)
 306
 307 #define SPLIT_HACK_MASK                 0xff000000
 308 #define SPLIT_HACK_OFFS                 0xfb000000
 309
 310 #endif /* __ASM_KVM_BOOK3S_H__ */