kvm_ppc.h revision df6909e5d52f67be01862c5cb453e509aee661f1 
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
37enum 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
45extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
46extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
47extern char kvmppc_handlers_start[];
48extern unsigned long kvmppc_handler_len;
49extern void kvmppc_handler_highmem(void);
50
51extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
52extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
53                              unsigned int rt, unsigned int bytes,
54                              int is_bigendian);
55extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
56                               unsigned int rt, unsigned int bytes,
57                               int is_bigendian);
58extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
59                               u64 val, unsigned int bytes, int is_bigendian);
60
61extern int kvmppc_emulate_instruction(struct kvm_run *run,
62                                      struct kvm_vcpu *vcpu);
63extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
64extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
65extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
66
67/* Core-specific hooks */
68
69extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
70                           unsigned int gtlb_idx);
71extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
72extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
73extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
74extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
75extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
76extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
77extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
78                              gva_t eaddr);
79extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
80extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
81
82extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
83                                                unsigned int id);
84extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
85extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
86extern int kvmppc_core_check_processor_compat(void);
87extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
88                                      struct kvm_translation *tr);
89
90extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
91extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
92
93extern void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu);
94extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
95extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
96extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
97extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
98extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
99                                       struct kvm_interrupt *irq);
100extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
101                                         struct kvm_interrupt *irq);
102
103extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
104                                  unsigned int op, int *advance);
105extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs);
106extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt);
107
108extern int kvmppc_booke_init(void);
109extern void kvmppc_booke_exit(void);
110
111extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
112extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
113extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
114
115extern int kvmppc_core_init_vm(struct kvm *kvm);
116extern void kvmppc_core_destroy_vm(struct kvm *kvm);
117extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
118				struct kvm_userspace_memory_region *mem);
119extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
120				struct kvm_userspace_memory_region *mem);
121
122/*
123 * Cuts out inst bits with ordering according to spec.
124 * That means the leftmost bit is zero. All given bits are included.
125 */
126static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
127{
128	u32 r;
129	u32 mask;
130
131	BUG_ON(msb > lsb);
132
133	mask = (1 << (lsb - msb + 1)) - 1;
134	r = (inst >> (63 - lsb)) & mask;
135
136	return r;
137}
138
139/*
140 * Replaces inst bits with ordering according to spec.
141 */
142static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
143{
144	u32 r;
145	u32 mask;
146
147	BUG_ON(msb > lsb);
148
149	mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
150	r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
151
152	return r;
153}
154
155void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
156int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
157
158void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
159int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
160
161void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
162
163#endif /* __POWERPC_KVM_PPC_H__ */
164