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
  70 /* Core-specific hooks */
  71
  72 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
  73                            unsigned int gtlb_idx);
  74 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
  75 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
  76 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
  77 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
  78 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
  79 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
  80 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
  81                               gva_t eaddr);
  82 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
  83 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
  84
  85 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
  86                                                 unsigned int id);
  87 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
  88 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
  89 extern int kvmppc_core_check_processor_compat(void);
  90 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
  91                                       struct kvm_translation *tr);
  92
  93 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
  94 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
  95
  96 extern void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu);
  97 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
  98 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
  99 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
 100 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
 101 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
 102                                        struct kvm_interrupt *irq);
 103 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
 104                                          struct kvm_interrupt *irq);
 105
 106 extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
 107                                   unsigned int op, int *advance);
 108 extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs);
 109 extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt);
 110
 111 extern int kvmppc_booke_init(void);
 112 extern void kvmppc_booke_exit(void);
 113
 114 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
 115 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
 116 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
 117
 118 extern long kvmppc_alloc_hpt(struct kvm *kvm);
 119 extern void kvmppc_free_hpt(struct kvm *kvm);
 120 extern long kvmppc_prepare_vrma(struct kvm *kvm,
 121                                 struct kvm_userspace_memory_region *mem);
 122 extern void kvmppc_map_vrma(struct kvm *kvm,
 123                             struct kvm_userspace_memory_region *mem);
 124 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
 125 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
 126                                 struct kvm_create_spapr_tce *args);
 127 extern long kvm_vm_ioctl_allocate_rma(struct kvm *kvm,
 128                                 struct kvm_allocate_rma *rma);
 129 extern struct kvmppc_rma_info *kvm_alloc_rma(void);
 130 extern void kvm_release_rma(struct kvmppc_rma_info *ri);
 131 extern int kvmppc_core_init_vm(struct kvm *kvm);
 132 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
 133 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
 134                                 struct kvm_userspace_memory_region *mem);
 135 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
 136                                 struct kvm_userspace_memory_region *mem);
 137
 138 /*
 139  * Cuts out inst bits with ordering according to spec.
 140  * That means the leftmost bit is zero. All given bits are included.
 141  */
 142 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
 143 {
 144         u32 r;
 145         u32 mask;
 146
 147         BUG_ON(msb > lsb);
 148
 149         mask = (1 << (lsb - msb + 1)) - 1;
 150         r = (inst >> (63 - lsb)) & mask;
 151
 152         return r;
 153 }
 154
 155 /*
 156  * Replaces inst bits with ordering according to spec.
 157  */
 158 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
 159 {
 160         u32 r;
 161         u32 mask;
 162
 163         BUG_ON(msb > lsb);
 164
 165         mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
 166         r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
 167
 168         return r;
 169 }
 170
 171 void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 172 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 173
 174 void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 175 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
 176
 177 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
 178
 179 #ifdef CONFIG_KVM_BOOK3S_64_HV
 180 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 181 {
 182         paca[cpu].kvm_hstate.xics_phys = addr;
 183 }
 184
 185 extern void kvm_rma_init(void);
 186
 187 #else
 188 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
 189 {}
 190
 191 static inline void kvm_rma_init(void)
 192 {}
 193 #endif
 194
 195 #endif /* __POWERPC_KVM_PPC_H__ */