tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#include <linux/bug.h>
32#ifdef CONFIG_PPC_BOOK3S
33#include <asm/kvm_book3s.h>
34#else
35#include <asm/kvm_booke.h>
36#endif
37#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
38#include <asm/paca.h>
39#endif
40
41enum emulation_result {
42 EMULATE_DONE, /* no further processing */
43 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
44 EMULATE_DO_DCR, /* kvm_run filled with DCR request */
45 EMULATE_FAIL, /* can't emulate this instruction */
46 EMULATE_AGAIN, /* something went wrong. go again */
47};
48
49extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
50extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
51extern char kvmppc_handlers_start[];
52extern unsigned long kvmppc_handler_len;
53extern void kvmppc_handler_highmem(void);
54
55extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
56extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
57 unsigned int rt, unsigned int bytes,
58 int is_bigendian);
59extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
60 unsigned int rt, unsigned int bytes,
61 int is_bigendian);
62extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
63 u64 val, unsigned int bytes, int is_bigendian);
64
65extern int kvmppc_emulate_instruction(struct kvm_run *run,
66 struct kvm_vcpu *vcpu);
67extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
68extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
69extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
70extern void kvmppc_decrementer_func(unsigned long data);
71extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
72extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
73extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
74
75/* Core-specific hooks */
76
77extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
78 unsigned int gtlb_idx);
79extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
80extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
81extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
82extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
83extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
84extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
85extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
86 gva_t eaddr);
87extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
88extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
89
90extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
91 unsigned int id);
92extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
93extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
94extern int kvmppc_core_check_processor_compat(void);
95extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
96 struct kvm_translation *tr);
97
98extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
99extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
100
101extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
102extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
103extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
104extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
105extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
106extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
107 struct kvm_interrupt *irq);
108extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
109 struct kvm_interrupt *irq);
110extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
111
112extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
113 unsigned int op, int *advance);
114extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn,
115 ulong val);
116extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn,
117 ulong *val);
118extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
119
120extern int kvmppc_booke_init(void);
121extern void kvmppc_booke_exit(void);
122
123extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
124extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
125extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
126
127extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp);
128extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp);
129extern void kvmppc_free_hpt(struct kvm *kvm);
130extern long kvmppc_prepare_vrma(struct kvm *kvm,
131 struct kvm_userspace_memory_region *mem);
132extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
133 struct kvm_memory_slot *memslot, unsigned long porder);
134extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
135extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
136 struct kvm_create_spapr_tce *args);
137extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
138 unsigned long ioba, unsigned long tce);
139extern long kvm_vm_ioctl_allocate_rma(struct kvm *kvm,
140 struct kvm_allocate_rma *rma);
141extern struct kvmppc_linear_info *kvm_alloc_rma(void);
142extern void kvm_release_rma(struct kvmppc_linear_info *ri);
143extern struct kvmppc_linear_info *kvm_alloc_hpt(void);
144extern void kvm_release_hpt(struct kvmppc_linear_info *li);
145extern int kvmppc_core_init_vm(struct kvm *kvm);
146extern void kvmppc_core_destroy_vm(struct kvm *kvm);
147extern void kvmppc_core_free_memslot(struct kvm_memory_slot *free,
148 struct kvm_memory_slot *dont);
149extern int kvmppc_core_create_memslot(struct kvm_memory_slot *slot,
150 unsigned long npages);
151extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
152 struct kvm_memory_slot *memslot,
153 struct kvm_userspace_memory_region *mem);
154extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
155 struct kvm_userspace_memory_region *mem,
156 struct kvm_memory_slot old);
157extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
158 struct kvm_ppc_smmu_info *info);
159extern void kvmppc_core_flush_memslot(struct kvm *kvm,
160 struct kvm_memory_slot *memslot);
161
162extern int kvmppc_bookehv_init(void);
163extern void kvmppc_bookehv_exit(void);
164
165extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
166
167extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
168
169/*
170 * Cuts out inst bits with ordering according to spec.
171 * That means the leftmost bit is zero. All given bits are included.
172 */
173static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
174{
175 u32 r;
176 u32 mask;
177
178 BUG_ON(msb > lsb);
179
180 mask = (1 << (lsb - msb + 1)) - 1;
181 r = (inst >> (63 - lsb)) & mask;
182
183 return r;
184}
185
186/*
187 * Replaces inst bits with ordering according to spec.
188 */
189static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
190{
191 u32 r;
192 u32 mask;
193
194 BUG_ON(msb > lsb);
195
196 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
197 r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
198
199 return r;
200}
201
202union kvmppc_one_reg {
203 u32 wval;
204 u64 dval;
205 vector128 vval;
206 u64 vsxval[2];
207 struct {
208 u64 addr;
209 u64 length;
210 } vpaval;
211};
212
213#define one_reg_size(id) \
214 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
215
216#define get_reg_val(id, reg) ({ \
217 union kvmppc_one_reg __u; \
218 switch (one_reg_size(id)) { \
219 case 4: __u.wval = (reg); break; \
220 case 8: __u.dval = (reg); break; \
221 default: BUG(); \
222 } \
223 __u; \
224})
225
226
227#define set_reg_val(id, val) ({ \
228 u64 __v; \
229 switch (one_reg_size(id)) { \
230 case 4: __v = (val).wval; break; \
231 case 8: __v = (val).dval; break; \
232 default: BUG(); \
233 } \
234 __v; \
235})
236
237void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
238int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
239
240void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
241int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
242
243int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
244int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
245int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
246int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
247
248void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
249
250#ifdef CONFIG_KVM_BOOK3S_64_HV
251static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
252{
253 paca[cpu].kvm_hstate.xics_phys = addr;
254}
255
256extern void kvm_linear_init(void);
257
258#else
259static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
260{}
261
262static inline void kvm_linear_init(void)
263{}
264#endif
265
266int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
267 struct kvm_config_tlb *cfg);
268int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
269 struct kvm_dirty_tlb *cfg);
270
271long kvmppc_alloc_lpid(void);
272void kvmppc_claim_lpid(long lpid);
273void kvmppc_free_lpid(long lpid);
274void kvmppc_init_lpid(unsigned long nr_lpids);
275
276static inline void kvmppc_mmu_flush_icache(pfn_t pfn)
277{
278 /* Clear i-cache for new pages */
279 struct page *page;
280 page = pfn_to_page(pfn);
281 if (!test_bit(PG_arch_1, &page->flags)) {
282 flush_dcache_icache_page(page);
283 set_bit(PG_arch_1, &page->flags);
284 }
285}
286
287/* Please call after prepare_to_enter. This function puts the lazy ee state
288 back to normal mode, without actually enabling interrupts. */
289static inline void kvmppc_lazy_ee_enable(void)
290{
291#ifdef CONFIG_PPC64
292 /* Only need to enable IRQs by hard enabling them after this */
293 local_paca->irq_happened = 0;
294 local_paca->soft_enabled = 1;
295#endif
296}
297
298static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
299{
300 ulong ea;
301 ulong msr_64bit = 0;
302
303 ea = kvmppc_get_gpr(vcpu, rb);
304 if (ra)
305 ea += kvmppc_get_gpr(vcpu, ra);
306
307#if defined(CONFIG_PPC_BOOK3E_64)
308 msr_64bit = MSR_CM;
309#elif defined(CONFIG_PPC_BOOK3S_64)
310 msr_64bit = MSR_SF;
311#endif
312
313 if (!(vcpu->arch.shared->msr & msr_64bit))
314 ea = (uint32_t)ea;
315
316 return ea;
317}
318
319#endif /* __POWERPC_KVM_PPC_H__ */