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 void 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, int rs);
111 extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt);
112 
113 extern int kvmppc_booke_init(void);
114 extern void kvmppc_booke_exit(void);
115 
116 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
117 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
118 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
119 
120 extern long kvmppc_alloc_hpt(struct kvm *kvm);
121 extern void kvmppc_free_hpt(struct kvm *kvm);
122 extern long kvmppc_prepare_vrma(struct kvm *kvm,
123 				struct kvm_userspace_memory_region *mem);
124 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
125 			struct kvm_memory_slot *memslot, unsigned long porder);
126 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
127 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
128 				struct kvm_create_spapr_tce *args);
129 extern long kvm_vm_ioctl_allocate_rma(struct kvm *kvm,
130 				struct kvm_allocate_rma *rma);
131 extern struct kvmppc_linear_info *kvm_alloc_rma(void);
132 extern void kvm_release_rma(struct kvmppc_linear_info *ri);
133 extern struct kvmppc_linear_info *kvm_alloc_hpt(void);
134 extern void kvm_release_hpt(struct kvmppc_linear_info *li);
135 extern int kvmppc_core_init_vm(struct kvm *kvm);
136 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
137 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
138 				struct kvm_userspace_memory_region *mem);
139 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
140 				struct kvm_userspace_memory_region *mem);
141 
142 /*
143  * Cuts out inst bits with ordering according to spec.
144  * That means the leftmost bit is zero. All given bits are included.
145  */
kvmppc_get_field(u64 inst,int msb,int lsb)146 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
147 {
148 	u32 r;
149 	u32 mask;
150 
151 	BUG_ON(msb > lsb);
152 
153 	mask = (1 << (lsb - msb + 1)) - 1;
154 	r = (inst >> (63 - lsb)) & mask;
155 
156 	return r;
157 }
158 
159 /*
160  * Replaces inst bits with ordering according to spec.
161  */
kvmppc_set_field(u64 inst,int msb,int lsb,int value)162 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
163 {
164 	u32 r;
165 	u32 mask;
166 
167 	BUG_ON(msb > lsb);
168 
169 	mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
170 	r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
171 
172 	return r;
173 }
174 
175 void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
176 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
177 
178 void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
179 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
180 
181 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
182 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
183 
184 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
185 
186 #ifdef CONFIG_KVM_BOOK3S_64_HV
kvmppc_set_xics_phys(int cpu,unsigned long addr)187 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
188 {
189 	paca[cpu].kvm_hstate.xics_phys = addr;
190 }
191 
192 extern void kvm_linear_init(void);
193 
194 #else
kvmppc_set_xics_phys(int cpu,unsigned long addr)195 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
196 {}
197 
kvm_linear_init(void)198 static inline void kvm_linear_init(void)
199 {}
200 #endif
201 
202 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
203 			      struct kvm_config_tlb *cfg);
204 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
205 			     struct kvm_dirty_tlb *cfg);
206 
207 #endif /* __POWERPC_KVM_PPC_H__ */
208