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. 2008 16 * 17 * Authors: Hollis Blanchard <hollisb@us.ibm.com> 18 */ 19 20 #ifndef __POWERPC_KVM_PPC_H__ 21 #define __POWERPC_KVM_PPC_H__ 22 23 /* This file exists just so we can dereference kvm_vcpu, avoiding nested header 24 * dependencies. */ 25 26 #include <linux/mutex.h> 27 #include <linux/timer.h> 28 #include <linux/types.h> 29 #include <linux/kvm_types.h> 30 #include <linux/kvm_host.h> 31 #include <linux/bug.h> 32 #ifdef CONFIG_PPC_BOOK3S 33 #include <asm/kvm_book3s.h> 34 #else 35 #include <asm/kvm_booke.h> 36 #endif 37 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER 38 #include <asm/paca.h> 39 #endif 40 41 enum emulation_result { 42 EMULATE_DONE, /* no further processing */ 43 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ 44 EMULATE_DO_DCR, /* kvm_run filled with DCR request */ 45 EMULATE_FAIL, /* can't emulate this instruction */ 46 EMULATE_AGAIN, /* something went wrong. go again */ 47 EMULATE_DO_PAPR, /* kvm_run filled with PAPR request */ 48 }; 49 50 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 51 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 52 extern void kvmppc_handler_highmem(void); 53 54 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); 55 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 56 unsigned int rt, unsigned int bytes, 57 int is_bigendian); 58 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, 59 unsigned int rt, unsigned int bytes, 60 int is_bigendian); 61 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 62 u64 val, unsigned int bytes, int is_bigendian); 63 64 extern int kvmppc_emulate_instruction(struct kvm_run *run, 65 struct kvm_vcpu *vcpu); 66 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); 67 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); 68 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); 69 extern void kvmppc_decrementer_func(unsigned long data); 70 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); 71 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); 72 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); 73 74 /* Core-specific hooks */ 75 76 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, 77 unsigned int gtlb_idx); 78 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); 79 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 80 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu); 81 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu); 82 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 83 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 84 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 85 gva_t eaddr); 86 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 87 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 88 89 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, 90 unsigned int id); 91 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 92 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 93 extern int kvmppc_core_check_processor_compat(void); 94 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, 95 struct kvm_translation *tr); 96 97 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 98 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); 99 100 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); 101 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); 102 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 103 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 104 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 105 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 106 struct kvm_interrupt *irq); 107 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu, 108 struct kvm_interrupt *irq); 109 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 110 111 extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, 112 unsigned int op, int *advance); 113 extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, 114 ulong val); 115 extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, 116 ulong *val); 117 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 118 119 extern int kvmppc_booke_init(void); 120 extern void kvmppc_booke_exit(void); 121 122 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 123 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 124 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 125 126 extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp); 127 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp); 128 extern void kvmppc_free_hpt(struct kvm *kvm); 129 extern long kvmppc_prepare_vrma(struct kvm *kvm, 130 struct kvm_userspace_memory_region *mem); 131 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 132 struct kvm_memory_slot *memslot, unsigned long porder); 133 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 134 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 135 struct kvm_create_spapr_tce *args); 136 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 137 unsigned long ioba, unsigned long tce); 138 extern long kvm_vm_ioctl_allocate_rma(struct kvm *kvm, 139 struct kvm_allocate_rma *rma); 140 extern struct kvmppc_linear_info *kvm_alloc_rma(void); 141 extern void kvm_release_rma(struct kvmppc_linear_info *ri); 142 extern struct kvmppc_linear_info *kvm_alloc_hpt(void); 143 extern void kvm_release_hpt(struct kvmppc_linear_info *li); 144 extern int kvmppc_core_init_vm(struct kvm *kvm); 145 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 146 extern void kvmppc_core_free_memslot(struct kvm_memory_slot *free, 147 struct kvm_memory_slot *dont); 148 extern int kvmppc_core_create_memslot(struct kvm_memory_slot *slot, 149 unsigned long npages); 150 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 151 struct kvm_memory_slot *memslot, 152 struct kvm_userspace_memory_region *mem); 153 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 154 struct kvm_userspace_memory_region *mem, 155 struct kvm_memory_slot old); 156 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 157 struct kvm_ppc_smmu_info *info); 158 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 159 struct kvm_memory_slot *memslot); 160 161 extern int kvmppc_bookehv_init(void); 162 extern void kvmppc_bookehv_exit(void); 163 164 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 165 166 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 167 168 /* 169 * Cuts out inst bits with ordering according to spec. 170 * That means the leftmost bit is zero. All given bits are included. 171 */ 172 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 173 { 174 u32 r; 175 u32 mask; 176 177 BUG_ON(msb > lsb); 178 179 mask = (1 << (lsb - msb + 1)) - 1; 180 r = (inst >> (63 - lsb)) & mask; 181 182 return r; 183 } 184 185 /* 186 * Replaces inst bits with ordering according to spec. 187 */ 188 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 189 { 190 u32 r; 191 u32 mask; 192 193 BUG_ON(msb > lsb); 194 195 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 196 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 197 198 return r; 199 } 200 201 union kvmppc_one_reg { 202 u32 wval; 203 u64 dval; 204 vector128 vval; 205 u64 vsxval[2]; 206 struct { 207 u64 addr; 208 u64 length; 209 } vpaval; 210 }; 211 212 #define one_reg_size(id) \ 213 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 214 215 #define get_reg_val(id, reg) ({ \ 216 union kvmppc_one_reg __u; \ 217 switch (one_reg_size(id)) { \ 218 case 4: __u.wval = (reg); break; \ 219 case 8: __u.dval = (reg); break; \ 220 default: BUG(); \ 221 } \ 222 __u; \ 223 }) 224 225 226 #define set_reg_val(id, val) ({ \ 227 u64 __v; \ 228 switch (one_reg_size(id)) { \ 229 case 4: __v = (val).wval; break; \ 230 case 8: __v = (val).dval; break; \ 231 default: BUG(); \ 232 } \ 233 __v; \ 234 }) 235 236 void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 237 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 238 239 void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 240 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 241 242 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 243 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 244 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 245 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 246 247 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 248 249 #ifdef CONFIG_KVM_BOOK3S_64_HV 250 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 251 { 252 paca[cpu].kvm_hstate.xics_phys = addr; 253 } 254 255 extern void kvm_linear_init(void); 256 257 #else 258 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 259 {} 260 261 static inline void kvm_linear_init(void) 262 {} 263 #endif 264 265 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 266 { 267 #ifdef CONFIG_KVM_BOOKE_HV 268 mtspr(SPRN_GEPR, epr); 269 #elif defined(CONFIG_BOOKE) 270 vcpu->arch.epr = epr; 271 #endif 272 } 273 274 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 275 struct kvm_config_tlb *cfg); 276 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 277 struct kvm_dirty_tlb *cfg); 278 279 long kvmppc_alloc_lpid(void); 280 void kvmppc_claim_lpid(long lpid); 281 void kvmppc_free_lpid(long lpid); 282 void kvmppc_init_lpid(unsigned long nr_lpids); 283 284 static inline void kvmppc_mmu_flush_icache(pfn_t pfn) 285 { 286 /* Clear i-cache for new pages */ 287 struct page *page; 288 page = pfn_to_page(pfn); 289 if (!test_bit(PG_arch_1, &page->flags)) { 290 flush_dcache_icache_page(page); 291 set_bit(PG_arch_1, &page->flags); 292 } 293 } 294 295 /* Please call after prepare_to_enter. This function puts the lazy ee state 296 back to normal mode, without actually enabling interrupts. */ 297 static inline void kvmppc_lazy_ee_enable(void) 298 { 299 #ifdef CONFIG_PPC64 300 /* Only need to enable IRQs by hard enabling them after this */ 301 local_paca->irq_happened = 0; 302 local_paca->soft_enabled = 1; 303 #endif 304 } 305 306 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 307 { 308 ulong ea; 309 ulong msr_64bit = 0; 310 311 ea = kvmppc_get_gpr(vcpu, rb); 312 if (ra) 313 ea += kvmppc_get_gpr(vcpu, ra); 314 315 #if defined(CONFIG_PPC_BOOK3E_64) 316 msr_64bit = MSR_CM; 317 #elif defined(CONFIG_PPC_BOOK3S_64) 318 msr_64bit = MSR_SF; 319 #endif 320 321 if (!(vcpu->arch.shared->msr & msr_64bit)) 322 ea = (uint32_t)ea; 323 324 return ea; 325 } 326 327 #endif /* __POWERPC_KVM_PPC_H__ */ 328