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
  37 enum emulation_result {
  38         EMULATE_DONE,         /* no further processing */
  39         EMULATE_DO_MMIO,      /* kvm_run filled with MMIO request */
  40         EMULATE_DO_DCR,       /* kvm_run filled with DCR request */
  41         EMULATE_FAIL,         /* can't emulate this instruction */
  42         EMULATE_AGAIN,        /* something went wrong. go again */
  43 };
  44
  45 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
  46 extern char kvmppc_handlers_start[];
  47 extern unsigned long kvmppc_handler_len;
  48 extern void kvmppc_handler_highmem(void);
  49
  50 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
  51 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
  52                               unsigned int rt, unsigned int bytes,
  53                               int is_bigendian);
  54 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
  55                                unsigned int rt, unsigned int bytes,
  56                                int is_bigendian);
  57 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
  58                                u64 val, unsigned int bytes, int is_bigendian);
  59
  60 extern int kvmppc_emulate_instruction(struct kvm_run *run,
  61                                       struct kvm_vcpu *vcpu);
  62 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
  63 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
  64
  65 /* Core-specific hooks */
  66
  67 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
  68                            unsigned int gtlb_idx);
  69 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
  70 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
  71 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
  72 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
  73 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
  74 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
  75 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
  76                               gva_t eaddr);
  77 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
  78 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
  79
  80 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
  81                                                 unsigned int id);
  82 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
  83 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
  84 extern int kvmppc_core_check_processor_compat(void);
  85 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
  86                                       struct kvm_translation *tr);
  87
  88 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
  89 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
  90
  91 extern void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu);
  92 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
  93 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
  94 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
  95 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
  96 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
  97                                        struct kvm_interrupt *irq);
  98 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
  99                                          struct kvm_interrupt *irq);
 100
 101 extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
 102                                   unsigned int op, int *advance);
 103 extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs);
 104 extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt);
 105
 106 extern int kvmppc_booke_init(void);
 107 extern void kvmppc_booke_exit(void);
 108
 109 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
 110 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
 111
 112 /*
 113  * Cuts out inst bits with ordering according to spec.
 114  * That means the leftmost bit is zero. All given bits are included.
 115  */
 116 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
 117 {
 118         u32 r;
 119         u32 mask;
 120
 121         BUG_ON(msb > lsb);
 122
 123         mask = (1 << (lsb - msb + 1)) - 1;
 124         r = (inst >> (63 - lsb)) & mask;
 125
 126         return r;
 127 }
 128
 129 /*
 130  * Replaces inst bits with ordering according to spec.
 131  */
 132 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
 133 {
 134         u32 r;
 135         u32 mask;
 136
 137         BUG_ON(msb > lsb);
 138
 139         mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
 140         r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
 141
 142         return r;
 143 }
 144
 145 #endif /* __POWERPC_KVM_PPC_H__ */