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kvm_ppc.h
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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 <[email protected]>
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 
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 int 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,
111  ulong val);
112 extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn,
113  ulong *val);
114 
115 extern int kvmppc_booke_init(void);
116 extern void kvmppc_booke_exit(void);
117 
118 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
119 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
120 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
121 
122 extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp);
123 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp);
124 extern void kvmppc_free_hpt(struct kvm *kvm);
125 extern long kvmppc_prepare_vrma(struct kvm *kvm,
127 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
128  struct kvm_memory_slot *memslot, unsigned long porder);
129 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
130 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
131  struct kvm_create_spapr_tce *args);
132 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
133  unsigned long ioba, unsigned long tce);
134 extern long kvm_vm_ioctl_allocate_rma(struct kvm *kvm,
135  struct kvm_allocate_rma *rma);
136 extern struct kvmppc_linear_info *kvm_alloc_rma(void);
137 extern void kvm_release_rma(struct kvmppc_linear_info *ri);
138 extern struct kvmppc_linear_info *kvm_alloc_hpt(void);
139 extern void kvm_release_hpt(struct kvmppc_linear_info *li);
140 extern int kvmppc_core_init_vm(struct kvm *kvm);
141 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
142 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
144 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
146 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
147  struct kvm_ppc_smmu_info *info);
148 
149 extern int kvmppc_bookehv_init(void);
150 extern void kvmppc_bookehv_exit(void);
151 
152 /*
153  * Cuts out inst bits with ordering according to spec.
154  * That means the leftmost bit is zero. All given bits are included.
155  */
156 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
157 {
158  u32 r;
159  u32 mask;
160 
161  BUG_ON(msb > lsb);
162 
163  mask = (1 << (lsb - msb + 1)) - 1;
164  r = (inst >> (63 - lsb)) & mask;
165 
166  return r;
167 }
168 
169 /*
170  * Replaces inst bits with ordering according to spec.
171  */
172 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
173 {
174  u32 r;
175  u32 mask;
176 
177  BUG_ON(msb > lsb);
178 
179  mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
180  r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
181 
182  return r;
183 }
184 
185 void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
186 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
187 
188 void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
189 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
190 
191 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
192 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
193 
194 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
195 
196 #ifdef CONFIG_KVM_BOOK3S_64_HV
197 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
198 {
199  paca[cpu].kvm_hstate.xics_phys = addr;
200 }
201 
202 extern void kvm_linear_init(void);
203 
204 #else
205 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
206 {}
207 
208 static inline void kvm_linear_init(void)
209 {}
210 #endif
211 
212 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
213  struct kvm_config_tlb *cfg);
214 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
215  struct kvm_dirty_tlb *cfg);
216 
217 long kvmppc_alloc_lpid(void);
218 void kvmppc_claim_lpid(long lpid);
219 void kvmppc_free_lpid(long lpid);
220 void kvmppc_init_lpid(unsigned long nr_lpids);
221 
222 static inline void kvmppc_mmu_flush_icache(pfn_t pfn)
223 {
224  /* Clear i-cache for new pages */
225  struct page *page;
226  page = pfn_to_page(pfn);
227  if (!test_bit(PG_arch_1, &page->flags)) {
229  set_bit(PG_arch_1, &page->flags);
230  }
231 }
232 
233 
234 #endif /* __POWERPC_KVM_PPC_H__ */