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