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 */
kvmppc_get_field(u64 inst,int msb,int lsb)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 */
kvmppc_set_field(u64 inst,int msb,int lsb,int value)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__ */
146