release/src-rt-6.x.4708/linux/linux-2.6.36/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_slb {
  28         u64 esid;
  29         u64 vsid;
  30         u64 orige;
  31         u64 origv;
  32         bool valid      : 1;
  33         bool Ks         : 1;
  34         bool Kp         : 1;
  35         bool nx         : 1;
  36         bool large      : 1;    /* PTEs are 16MB */
  37         bool tb         : 1;    /* 1TB segment */
  38         bool class      : 1;
  39 };
  40
  41 struct kvmppc_sr {
  42         u32 raw;
  43         u32 vsid;
  44         bool Ks         : 1;
  45         bool Kp         : 1;
  46         bool nx         : 1;
  47         bool valid      : 1;
  48 };
  49
  50 struct kvmppc_bat {
  51         u64 raw;
  52         u32 bepi;
  53         u32 bepi_mask;
  54         u32 brpn;
  55         u8 wimg;
  56         u8 pp;
  57         bool vs         : 1;
  58         bool vp         : 1;
  59 };
  60
  61 struct kvmppc_sid_map {
  62         u64 guest_vsid;
  63         u64 guest_esid;
  64         u64 host_vsid;
  65         bool valid      : 1;
  66 };
  67
  68 #define SID_MAP_BITS    9
  69 #define SID_MAP_NUM     (1 << SID_MAP_BITS)
  70 #define SID_MAP_MASK    (SID_MAP_NUM - 1)
  71
  72 struct kvmppc_vcpu_book3s {
  73         struct kvm_vcpu vcpu;
  74         struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
  75         struct kvmppc_sid_map sid_map[SID_MAP_NUM];
  76         struct kvmppc_slb slb[64];
  77         struct {
  78                 u64 esid;
  79                 u64 vsid;
  80         } slb_shadow[64];
  81         u8 slb_shadow_max;
  82         struct kvmppc_sr sr[16];
  83         struct kvmppc_bat ibat[8];
  84         struct kvmppc_bat dbat[8];
  85         u64 hid[6];
  86         u64 gqr[8];
  87         int slb_nr;
  88         u32 dsisr;
  89         u64 sdr1;
  90         u64 hior;
  91         u64 msr_mask;
  92         u64 vsid_first;
  93         u64 vsid_next;
  94         u64 vsid_max;
  95         int context_id;
  96         ulong prog_flags; /* flags to inject when giving a 700 trap */
  97 };
  98
  99 #define CONTEXT_HOST            0
 100 #define CONTEXT_GUEST           1
 101 #define CONTEXT_GUEST_END       2
 102
 103 #define VSID_REAL       0x1fffffffffc00000ULL
 104 #define VSID_BAT        0x1fffffffffb00000ULL
 105 #define VSID_REAL_DR    0x2000000000000000ULL
 106 #define VSID_REAL_IR    0x4000000000000000ULL
 107 #define VSID_PR         0x8000000000000000ULL
 108
 109 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
 110 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
 111 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
 112 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
 113 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
 114 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
 115 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
 116 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
 117 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
 118
 119 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
 120 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
 121 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
 122 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
 123 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
 124 extern int kvmppc_mmu_hpte_sysinit(void);
 125 extern void kvmppc_mmu_hpte_sysexit(void);
 126
 127 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
 128 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
 129 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
 130 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
 131                            bool upper, u32 val);
 132 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
 133 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
 134
 135 extern u32 kvmppc_trampoline_lowmem;
 136 extern u32 kvmppc_trampoline_enter;
 137 extern void kvmppc_rmcall(ulong srr0, ulong srr1);
 138 extern void kvmppc_load_up_fpu(void);
 139 extern void kvmppc_load_up_altivec(void);
 140 extern void kvmppc_load_up_vsx(void);
 141 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
 142 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
 143
 144 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
 145 {
 146         return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu);
 147 }
 148
 149 static inline ulong dsisr(void)
 150 {
 151         ulong r;
 152         asm ( "mfdsisr %0 " : "=r" (r) );
 153         return r;
 154 }
 155
 156 extern void kvm_return_point(void);
 157 static inline struct kvmppc_book3s_shadow_vcpu *to_svcpu(struct kvm_vcpu *vcpu);
 158
 159 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
 160 {
 161         if ( num < 14 ) {
 162                 to_svcpu(vcpu)->gpr[num] = val;
 163                 to_book3s(vcpu)->shadow_vcpu->gpr[num] = val;
 164         } else
 165                 vcpu->arch.gpr[num] = val;
 166 }
 167
 168 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
 169 {
 170         if ( num < 14 )
 171                 return to_svcpu(vcpu)->gpr[num];
 172         else
 173                 return vcpu->arch.gpr[num];
 174 }
 175
 176 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
 177 {
 178         to_svcpu(vcpu)->cr = val;
 179         to_book3s(vcpu)->shadow_vcpu->cr = val;
 180 }
 181
 182 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
 183 {
 184         return to_svcpu(vcpu)->cr;
 185 }
 186
 187 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
 188 {
 189         to_svcpu(vcpu)->xer = val;
 190         to_book3s(vcpu)->shadow_vcpu->xer = val;
 191 }
 192
 193 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
 194 {
 195         return to_svcpu(vcpu)->xer;
 196 }
 197
 198 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
 199 {
 200         to_svcpu(vcpu)->ctr = val;
 201 }
 202
 203 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
 204 {
 205         return to_svcpu(vcpu)->ctr;
 206 }
 207
 208 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
 209 {
 210         to_svcpu(vcpu)->lr = val;
 211 }
 212
 213 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
 214 {
 215         return to_svcpu(vcpu)->lr;
 216 }
 217
 218 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
 219 {
 220         to_svcpu(vcpu)->pc = val;
 221 }
 222
 223 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
 224 {
 225         return to_svcpu(vcpu)->pc;
 226 }
 227
 228 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu)
 229 {
 230         ulong pc = kvmppc_get_pc(vcpu);
 231         struct kvmppc_book3s_shadow_vcpu *svcpu = to_svcpu(vcpu);
 232
 233         /* Load the instruction manually if it failed to do so in the
 234          * exit path */
 235         if (svcpu->last_inst == KVM_INST_FETCH_FAILED)
 236                 kvmppc_ld(vcpu, &pc, sizeof(u32), &svcpu->last_inst, false);
 237
 238         return svcpu->last_inst;
 239 }
 240
 241 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
 242 {
 243         return to_svcpu(vcpu)->fault_dar;
 244 }
 245
 246 /* Magic register values loaded into r3 and r4 before the 'sc' assembly
 247  * instruction for the OSI hypercalls */
 248 #define OSI_SC_MAGIC_R3                 0x113724FA
 249 #define OSI_SC_MAGIC_R4                 0x77810F9B
 250
 251 #define INS_DCBZ                        0x7c0007ec
 252
 253 /* Also add subarch specific defines */
 254
 255 #ifdef CONFIG_PPC_BOOK3S_32
 256 #include <asm/kvm_book3s_32.h>
 257 #else
 258 #include <asm/kvm_book3s_64.h>
 259 #endif
 260
 261 #endif /* __ASM_KVM_BOOK3S_H__ */