arch/powerpc/include/asm/kvm_ppc.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. 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 #ifdef CONFIG_PPC_BOOK3S
  32 #include <asm/kvm_book3s.h>
  33 #else
  34 #include <asm/kvm_booke.h>
  35 #endif
  36 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
  37 #include <asm/paca.h>
  38 #endif
  39
  40 enum emulation_result {
  41         EMULATE_DONE,         /* no further processing */
  42         EMULATE_DO_MMIO,      /* kvm_run filled with MMIO request */
  43         EMULATE_DO_DCR,       /* kvm_run filled with DCR request */
  44         EMULATE_FAIL,         /* can't emulate this instruction */
  45         EMULATE_AGAIN,        /* something went wrong. go again */
  46 };
  47
  48 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
  49 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
  50 extern char kvmppc_handlers_start[];
  51 extern unsigned long kvmppc_handler_len;
  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
  72 /* Core-specific hooks */
  73
  74 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
  75                            unsigned int gtlb_idx);
  76 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
  77 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
  78 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
  79 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
  80 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
  81 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
  82 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
  83                               gva_t eaddr);
  84 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
  85 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
  86
  87 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
  88                                                 unsigned int id);
  89 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
  90 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
  91 extern int kvmppc_core_check_processor_compat(void);
  92 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
  93                                       struct kvm_translation *tr);
  94
  95 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
  96 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
  97
  98 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
  99 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
 100 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
 101 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
 102 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
 103 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
 104                                        struct kvm_interrupt *irq);
 105 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
 106                                          struct kvm_interrupt *irq);
 107
 108 extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
 109                                   unsigned int op, int *advance);
 110 extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn,
 111                                      ulong val);
 112 extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn,
 113                                      ulong *val);
 114
 115 extern int kvmppc_booke_init(void);
 116 extern void kvmppc_booke_exit(void);
 117
 118 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
 119 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
 120 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
 121
 122 extern long kvmppc_alloc_hpt(struct kvm *kvm);
 123 extern void kvmppc_free_hpt(struct kvm *kvm);
 124 extern long kvmppc_prepare_vrma(struct kvm *kvm,
 125                                 struct kvm_userspace_memory_region *mem);
 126 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
 127                         struct kvm_memory_slot *memslot, unsigned long porder);
 128 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
 129 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
 130                                 struct kvm_create_spapr_tce *args);
 131 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
 132                              unsigned long ioba, unsigned long tce);
 133 extern long kvm_vm_ioctl_allocate_rma(struct kvm *kvm,
 134                                 struct kvm_allocate_rma *rma);
 135 extern struct kvmppc_linear_info *kvm_alloc_rma(void);
 136 extern void kvm_release_rma(struct kvmppc_linear_info *ri);
 137 extern struct kvmppc_linear_info *kvm_alloc_hpt(void);
 138 extern void kvm_release_hpt(struct kvmppc_linear_info *li);
 139 extern int kvmppc_core_init_vm(struct kvm *kvm);
 140 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
 141 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
 142                                 struct kvm_userspace_memory_region *mem);
 143 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
 144                                 struct kvm_userspace_memory_region *mem);
 145 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
 146                                       struct kvm_ppc_smmu_info *info);
 147
 148 extern int kvmppc_bookehv_init(void);
 149 extern void kvmppc_bookehv_exit(void);
 150
 151 /*
 152  * Cuts out inst bits with ordering according to spec.
 153  * That means the leftmost bit is zero. All given bits are included.
 154  */
 155 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
 156 {
 157         u32 r;
 158         u32 mask;
 159
 160         BUG_ON(msb > lsb);
 161
 162         mask = (1 << (lsb - msb + 1)) - 1;
 163         r = (inst >> (63 - lsb)) & mask;
 164
 165         return r;
 166 }
 167
 168 /*
 169  * Replaces inst bits with ordering according to spec.
 170  */
 171 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
 172 {
 173         u32 r;
 174         u32 mask;
 175
 176         BUG_ON(msb > lsb);
 177
 178         mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
 179         r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
 180
 181         return r;
 182 }
 183
 184 void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 185 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 186
 187 void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 188 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 189
 190 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
 191 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
 192
 193 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
 194
 195 #ifdef CONFIG_KVM_BOOK3S_64_HV
 196 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 197 {
 198         paca[cpu].kvm_hstate.xics_phys = addr;
 199 }
 200
 201 extern void kvm_linear_init(void);
 202
 203 #else
 204 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 205 {}
 206
 207 static inline void kvm_linear_init(void)
 208 {}
 209 #endif
 210
 211 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
 212                               struct kvm_config_tlb *cfg);
 213 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
 214                              struct kvm_dirty_tlb *cfg);
 215
 216 long kvmppc_alloc_lpid(void);
 217 void kvmppc_claim_lpid(long lpid);
 218 void kvmppc_free_lpid(long lpid);
 219 void kvmppc_init_lpid(unsigned long nr_lpids);
 220
 221 #endif /* __POWERPC_KVM_PPC_H__ */