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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 <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 | ||
41 | /* | |
42 | * KVMPPC_INST_SW_BREAKPOINT is debug Instruction | |
43 | * for supporting software breakpoint. | |
44 | */ | |
45 | #define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00 | |
46 | ||
47 | enum emulation_result { | |
48 | EMULATE_DONE, /* no further processing */ | |
49 | EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ | |
50 | EMULATE_FAIL, /* can't emulate this instruction */ | |
51 | EMULATE_AGAIN, /* something went wrong. go again */ | |
52 | EMULATE_EXIT_USER, /* emulation requires exit to user-space */ | |
53 | }; | |
54 | ||
55 | enum instruction_type { | |
56 | INST_GENERIC, | |
57 | INST_SC, /* system call */ | |
58 | }; | |
59 | ||
60 | enum xlate_instdata { | |
61 | XLATE_INST, /* translate instruction address */ | |
62 | XLATE_DATA /* translate data address */ | |
63 | }; | |
64 | ||
65 | enum xlate_readwrite { | |
66 | XLATE_READ, /* check for read permissions */ | |
67 | XLATE_WRITE /* check for write permissions */ | |
68 | }; | |
69 | ||
70 | extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); | |
71 | extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); | |
72 | extern void kvmppc_handler_highmem(void); | |
73 | ||
74 | extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); | |
75 | extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
76 | unsigned int rt, unsigned int bytes, | |
77 | int is_default_endian); | |
78 | extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
79 | unsigned int rt, unsigned int bytes, | |
80 | int is_default_endian); | |
81 | extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
82 | u64 val, unsigned int bytes, | |
83 | int is_default_endian); | |
84 | ||
85 | extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, | |
86 | enum instruction_type type, u32 *inst); | |
87 | ||
88 | extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, | |
89 | bool data); | |
90 | extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, | |
91 | bool data); | |
92 | extern int kvmppc_emulate_instruction(struct kvm_run *run, | |
93 | struct kvm_vcpu *vcpu); | |
94 | extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu); | |
95 | extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); | |
96 | extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); | |
97 | extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); | |
98 | extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu); | |
99 | extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); | |
100 | extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); | |
101 | extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
102 | ||
103 | /* Core-specific hooks */ | |
104 | ||
105 | extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, | |
106 | unsigned int gtlb_idx); | |
107 | extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); | |
108 | extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); | |
109 | extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu); | |
110 | extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu); | |
111 | extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); | |
112 | extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); | |
113 | extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, | |
114 | gva_t eaddr); | |
115 | extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); | |
116 | extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); | |
117 | extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, | |
118 | enum xlate_instdata xlid, enum xlate_readwrite xlrw, | |
119 | struct kvmppc_pte *pte); | |
120 | ||
121 | extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, | |
122 | unsigned int id); | |
123 | extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); | |
124 | extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); | |
125 | extern int kvmppc_core_check_processor_compat(void); | |
126 | extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, | |
127 | struct kvm_translation *tr); | |
128 | ||
129 | extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
130 | extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); | |
131 | ||
132 | extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); | |
133 | extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); | |
134 | extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); | |
135 | extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); | |
136 | extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); | |
137 | extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, | |
138 | struct kvm_interrupt *irq); | |
139 | extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); | |
140 | extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags, | |
141 | ulong esr_flags); | |
142 | extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, | |
143 | ulong dear_flags, | |
144 | ulong esr_flags); | |
145 | extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu); | |
146 | extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, | |
147 | ulong esr_flags); | |
148 | extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); | |
149 | extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); | |
150 | ||
151 | extern int kvmppc_booke_init(void); | |
152 | extern void kvmppc_booke_exit(void); | |
153 | ||
154 | extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); | |
155 | extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); | |
156 | extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); | |
157 | ||
158 | extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp); | |
159 | extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp); | |
160 | extern void kvmppc_free_hpt(struct kvm *kvm); | |
161 | extern long kvmppc_prepare_vrma(struct kvm *kvm, | |
162 | struct kvm_userspace_memory_region *mem); | |
163 | extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, | |
164 | struct kvm_memory_slot *memslot, unsigned long porder); | |
165 | extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); | |
166 | ||
167 | extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, | |
168 | struct kvm_create_spapr_tce_64 *args); | |
169 | extern struct kvmppc_spapr_tce_table *kvmppc_find_table( | |
170 | struct kvm_vcpu *vcpu, unsigned long liobn); | |
171 | extern long kvmppc_ioba_validate(struct kvmppc_spapr_tce_table *stt, | |
172 | unsigned long ioba, unsigned long npages); | |
173 | extern long kvmppc_tce_validate(struct kvmppc_spapr_tce_table *tt, | |
174 | unsigned long tce); | |
175 | extern long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa, | |
176 | unsigned long *ua, unsigned long **prmap); | |
177 | extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt, | |
178 | unsigned long idx, unsigned long tce); | |
179 | extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, | |
180 | unsigned long ioba, unsigned long tce); | |
181 | extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, | |
182 | unsigned long liobn, unsigned long ioba, | |
183 | unsigned long tce_list, unsigned long npages); | |
184 | extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu, | |
185 | unsigned long liobn, unsigned long ioba, | |
186 | unsigned long tce_value, unsigned long npages); | |
187 | extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn, | |
188 | unsigned long ioba); | |
189 | extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages); | |
190 | extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages); | |
191 | extern int kvmppc_core_init_vm(struct kvm *kvm); | |
192 | extern void kvmppc_core_destroy_vm(struct kvm *kvm); | |
193 | extern void kvmppc_core_free_memslot(struct kvm *kvm, | |
194 | struct kvm_memory_slot *free, | |
195 | struct kvm_memory_slot *dont); | |
196 | extern int kvmppc_core_create_memslot(struct kvm *kvm, | |
197 | struct kvm_memory_slot *slot, | |
198 | unsigned long npages); | |
199 | extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, | |
200 | struct kvm_memory_slot *memslot, | |
201 | const struct kvm_userspace_memory_region *mem); | |
202 | extern void kvmppc_core_commit_memory_region(struct kvm *kvm, | |
203 | const struct kvm_userspace_memory_region *mem, | |
204 | const struct kvm_memory_slot *old, | |
205 | const struct kvm_memory_slot *new); | |
206 | extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, | |
207 | struct kvm_ppc_smmu_info *info); | |
208 | extern void kvmppc_core_flush_memslot(struct kvm *kvm, | |
209 | struct kvm_memory_slot *memslot); | |
210 | ||
211 | extern int kvmppc_bookehv_init(void); | |
212 | extern void kvmppc_bookehv_exit(void); | |
213 | ||
214 | extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); | |
215 | ||
216 | extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); | |
217 | ||
218 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); | |
219 | ||
220 | extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); | |
221 | extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); | |
222 | extern void kvmppc_rtas_tokens_free(struct kvm *kvm); | |
223 | extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, | |
224 | u32 priority); | |
225 | extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, | |
226 | u32 *priority); | |
227 | extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); | |
228 | extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); | |
229 | ||
230 | void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu); | |
231 | void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu); | |
232 | ||
233 | union kvmppc_one_reg { | |
234 | u32 wval; | |
235 | u64 dval; | |
236 | vector128 vval; | |
237 | u64 vsxval[2]; | |
238 | struct { | |
239 | u64 addr; | |
240 | u64 length; | |
241 | } vpaval; | |
242 | }; | |
243 | ||
244 | struct kvmppc_ops { | |
245 | struct module *owner; | |
246 | int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); | |
247 | int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); | |
248 | int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, | |
249 | union kvmppc_one_reg *val); | |
250 | int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, | |
251 | union kvmppc_one_reg *val); | |
252 | void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); | |
253 | void (*vcpu_put)(struct kvm_vcpu *vcpu); | |
254 | void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); | |
255 | int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); | |
256 | struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); | |
257 | void (*vcpu_free)(struct kvm_vcpu *vcpu); | |
258 | int (*check_requests)(struct kvm_vcpu *vcpu); | |
259 | int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); | |
260 | void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); | |
261 | int (*prepare_memory_region)(struct kvm *kvm, | |
262 | struct kvm_memory_slot *memslot, | |
263 | const struct kvm_userspace_memory_region *mem); | |
264 | void (*commit_memory_region)(struct kvm *kvm, | |
265 | const struct kvm_userspace_memory_region *mem, | |
266 | const struct kvm_memory_slot *old, | |
267 | const struct kvm_memory_slot *new); | |
268 | int (*unmap_hva)(struct kvm *kvm, unsigned long hva); | |
269 | int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, | |
270 | unsigned long end); | |
271 | int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end); | |
272 | int (*test_age_hva)(struct kvm *kvm, unsigned long hva); | |
273 | void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); | |
274 | void (*mmu_destroy)(struct kvm_vcpu *vcpu); | |
275 | void (*free_memslot)(struct kvm_memory_slot *free, | |
276 | struct kvm_memory_slot *dont); | |
277 | int (*create_memslot)(struct kvm_memory_slot *slot, | |
278 | unsigned long npages); | |
279 | int (*init_vm)(struct kvm *kvm); | |
280 | void (*destroy_vm)(struct kvm *kvm); | |
281 | int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); | |
282 | int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
283 | unsigned int inst, int *advance); | |
284 | int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); | |
285 | int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); | |
286 | void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); | |
287 | long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, | |
288 | unsigned long arg); | |
289 | int (*hcall_implemented)(unsigned long hcall); | |
290 | int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, | |
291 | struct irq_bypass_producer *); | |
292 | void (*irq_bypass_del_producer)(struct irq_bypass_consumer *, | |
293 | struct irq_bypass_producer *); | |
294 | int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg); | |
295 | int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); | |
296 | }; | |
297 | ||
298 | extern struct kvmppc_ops *kvmppc_hv_ops; | |
299 | extern struct kvmppc_ops *kvmppc_pr_ops; | |
300 | ||
301 | static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, | |
302 | enum instruction_type type, u32 *inst) | |
303 | { | |
304 | int ret = EMULATE_DONE; | |
305 | u32 fetched_inst; | |
306 | ||
307 | /* Load the instruction manually if it failed to do so in the | |
308 | * exit path */ | |
309 | if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) | |
310 | ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); | |
311 | ||
312 | /* Write fetch_failed unswapped if the fetch failed */ | |
313 | if (ret == EMULATE_DONE) | |
314 | fetched_inst = kvmppc_need_byteswap(vcpu) ? | |
315 | swab32(vcpu->arch.last_inst) : | |
316 | vcpu->arch.last_inst; | |
317 | else | |
318 | fetched_inst = vcpu->arch.last_inst; | |
319 | ||
320 | *inst = fetched_inst; | |
321 | return ret; | |
322 | } | |
323 | ||
324 | static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) | |
325 | { | |
326 | return kvm->arch.kvm_ops == kvmppc_hv_ops; | |
327 | } | |
328 | ||
329 | extern int kvmppc_hwrng_present(void); | |
330 | ||
331 | /* | |
332 | * Cuts out inst bits with ordering according to spec. | |
333 | * That means the leftmost bit is zero. All given bits are included. | |
334 | */ | |
335 | static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) | |
336 | { | |
337 | u32 r; | |
338 | u32 mask; | |
339 | ||
340 | BUG_ON(msb > lsb); | |
341 | ||
342 | mask = (1 << (lsb - msb + 1)) - 1; | |
343 | r = (inst >> (63 - lsb)) & mask; | |
344 | ||
345 | return r; | |
346 | } | |
347 | ||
348 | /* | |
349 | * Replaces inst bits with ordering according to spec. | |
350 | */ | |
351 | static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) | |
352 | { | |
353 | u32 r; | |
354 | u32 mask; | |
355 | ||
356 | BUG_ON(msb > lsb); | |
357 | ||
358 | mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); | |
359 | r = (inst & ~mask) | ((value << (63 - lsb)) & mask); | |
360 | ||
361 | return r; | |
362 | } | |
363 | ||
364 | #define one_reg_size(id) \ | |
365 | (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) | |
366 | ||
367 | #define get_reg_val(id, reg) ({ \ | |
368 | union kvmppc_one_reg __u; \ | |
369 | switch (one_reg_size(id)) { \ | |
370 | case 4: __u.wval = (reg); break; \ | |
371 | case 8: __u.dval = (reg); break; \ | |
372 | default: BUG(); \ | |
373 | } \ | |
374 | __u; \ | |
375 | }) | |
376 | ||
377 | ||
378 | #define set_reg_val(id, val) ({ \ | |
379 | u64 __v; \ | |
380 | switch (one_reg_size(id)) { \ | |
381 | case 4: __v = (val).wval; break; \ | |
382 | case 8: __v = (val).dval; break; \ | |
383 | default: BUG(); \ | |
384 | } \ | |
385 | __v; \ | |
386 | }) | |
387 | ||
388 | int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); | |
389 | int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); | |
390 | ||
391 | int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); | |
392 | int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); | |
393 | ||
394 | int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); | |
395 | int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); | |
396 | int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); | |
397 | int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); | |
398 | ||
399 | void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); | |
400 | ||
401 | struct openpic; | |
402 | ||
403 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE | |
404 | extern void kvm_cma_reserve(void) __init; | |
405 | static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) | |
406 | { | |
407 | paca[cpu].kvm_hstate.xics_phys = addr; | |
408 | } | |
409 | ||
410 | static inline u32 kvmppc_get_xics_latch(void) | |
411 | { | |
412 | u32 xirr; | |
413 | ||
414 | xirr = get_paca()->kvm_hstate.saved_xirr; | |
415 | get_paca()->kvm_hstate.saved_xirr = 0; | |
416 | return xirr; | |
417 | } | |
418 | ||
419 | static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) | |
420 | { | |
421 | paca[cpu].kvm_hstate.host_ipi = host_ipi; | |
422 | } | |
423 | ||
424 | static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) | |
425 | { | |
426 | vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); | |
427 | } | |
428 | ||
429 | extern void kvm_hv_vm_activated(void); | |
430 | extern void kvm_hv_vm_deactivated(void); | |
431 | extern bool kvm_hv_mode_active(void); | |
432 | ||
433 | #else | |
434 | static inline void __init kvm_cma_reserve(void) | |
435 | {} | |
436 | ||
437 | static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) | |
438 | {} | |
439 | ||
440 | static inline u32 kvmppc_get_xics_latch(void) | |
441 | { | |
442 | return 0; | |
443 | } | |
444 | ||
445 | static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) | |
446 | {} | |
447 | ||
448 | static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) | |
449 | { | |
450 | kvm_vcpu_kick(vcpu); | |
451 | } | |
452 | ||
453 | static inline bool kvm_hv_mode_active(void) { return false; } | |
454 | ||
455 | #endif | |
456 | ||
457 | #ifdef CONFIG_KVM_XICS | |
458 | static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) | |
459 | { | |
460 | return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; | |
461 | } | |
462 | ||
463 | static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( | |
464 | struct kvm *kvm) | |
465 | { | |
466 | if (kvm && kvm_irq_bypass) | |
467 | return kvm->arch.pimap; | |
468 | return NULL; | |
469 | } | |
470 | ||
471 | extern void kvmppc_alloc_host_rm_ops(void); | |
472 | extern void kvmppc_free_host_rm_ops(void); | |
473 | extern void kvmppc_free_pimap(struct kvm *kvm); | |
474 | extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); | |
475 | extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); | |
476 | extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server); | |
477 | extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args); | |
478 | extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); | |
479 | extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); | |
480 | extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); | |
481 | extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, | |
482 | struct kvm_vcpu *vcpu, u32 cpu); | |
483 | extern void kvmppc_xics_ipi_action(void); | |
484 | extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq, | |
485 | unsigned long host_irq); | |
486 | extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq, | |
487 | unsigned long host_irq); | |
488 | extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr, | |
489 | struct kvmppc_irq_map *irq_map, | |
490 | struct kvmppc_passthru_irqmap *pimap, | |
491 | bool *again); | |
492 | extern int h_ipi_redirect; | |
493 | #else | |
494 | static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( | |
495 | struct kvm *kvm) | |
496 | { return NULL; } | |
497 | static inline void kvmppc_alloc_host_rm_ops(void) {}; | |
498 | static inline void kvmppc_free_host_rm_ops(void) {}; | |
499 | static inline void kvmppc_free_pimap(struct kvm *kvm) {}; | |
500 | static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) | |
501 | { return 0; } | |
502 | static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) | |
503 | { return 0; } | |
504 | static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } | |
505 | static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, | |
506 | unsigned long server) | |
507 | { return -EINVAL; } | |
508 | static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm, | |
509 | struct kvm_irq_level *args) | |
510 | { return -ENOTTY; } | |
511 | static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) | |
512 | { return 0; } | |
513 | #endif | |
514 | ||
515 | /* | |
516 | * Prototypes for functions called only from assembler code. | |
517 | * Having prototypes reduces sparse errors. | |
518 | */ | |
519 | long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, | |
520 | unsigned long ioba, unsigned long tce); | |
521 | long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu, | |
522 | unsigned long liobn, unsigned long ioba, | |
523 | unsigned long tce_list, unsigned long npages); | |
524 | long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, | |
525 | unsigned long liobn, unsigned long ioba, | |
526 | unsigned long tce_value, unsigned long npages); | |
527 | long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, | |
528 | unsigned int yield_count); | |
529 | long kvmppc_h_random(struct kvm_vcpu *vcpu); | |
530 | void kvmhv_commence_exit(int trap); | |
531 | long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); | |
532 | void kvmppc_subcore_enter_guest(void); | |
533 | void kvmppc_subcore_exit_guest(void); | |
534 | long kvmppc_realmode_hmi_handler(void); | |
535 | long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, | |
536 | long pte_index, unsigned long pteh, unsigned long ptel); | |
537 | long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, | |
538 | unsigned long pte_index, unsigned long avpn); | |
539 | long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); | |
540 | long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, | |
541 | unsigned long pte_index, unsigned long avpn, | |
542 | unsigned long va); | |
543 | long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, | |
544 | unsigned long pte_index); | |
545 | long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, | |
546 | unsigned long pte_index); | |
547 | long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, | |
548 | unsigned long pte_index); | |
549 | long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, | |
550 | unsigned long slb_v, unsigned int status, bool data); | |
551 | unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); | |
552 | int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, | |
553 | unsigned long mfrr); | |
554 | int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); | |
555 | int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); | |
556 | ||
557 | /* | |
558 | * Host-side operations we want to set up while running in real | |
559 | * mode in the guest operating on the xics. | |
560 | * Currently only VCPU wakeup is supported. | |
561 | */ | |
562 | ||
563 | union kvmppc_rm_state { | |
564 | unsigned long raw; | |
565 | struct { | |
566 | u32 in_host; | |
567 | u32 rm_action; | |
568 | }; | |
569 | }; | |
570 | ||
571 | struct kvmppc_host_rm_core { | |
572 | union kvmppc_rm_state rm_state; | |
573 | void *rm_data; | |
574 | char pad[112]; | |
575 | }; | |
576 | ||
577 | struct kvmppc_host_rm_ops { | |
578 | struct kvmppc_host_rm_core *rm_core; | |
579 | void (*vcpu_kick)(struct kvm_vcpu *vcpu); | |
580 | }; | |
581 | ||
582 | extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv; | |
583 | ||
584 | static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu) | |
585 | { | |
586 | #ifdef CONFIG_KVM_BOOKE_HV | |
587 | return mfspr(SPRN_GEPR); | |
588 | #elif defined(CONFIG_BOOKE) | |
589 | return vcpu->arch.epr; | |
590 | #else | |
591 | return 0; | |
592 | #endif | |
593 | } | |
594 | ||
595 | static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) | |
596 | { | |
597 | #ifdef CONFIG_KVM_BOOKE_HV | |
598 | mtspr(SPRN_GEPR, epr); | |
599 | #elif defined(CONFIG_BOOKE) | |
600 | vcpu->arch.epr = epr; | |
601 | #endif | |
602 | } | |
603 | ||
604 | #ifdef CONFIG_KVM_MPIC | |
605 | ||
606 | void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); | |
607 | int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, | |
608 | u32 cpu); | |
609 | void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); | |
610 | ||
611 | #else | |
612 | ||
613 | static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) | |
614 | { | |
615 | } | |
616 | ||
617 | static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, | |
618 | struct kvm_vcpu *vcpu, u32 cpu) | |
619 | { | |
620 | return -EINVAL; | |
621 | } | |
622 | ||
623 | static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, | |
624 | struct kvm_vcpu *vcpu) | |
625 | { | |
626 | } | |
627 | ||
628 | #endif /* CONFIG_KVM_MPIC */ | |
629 | ||
630 | int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, | |
631 | struct kvm_config_tlb *cfg); | |
632 | int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, | |
633 | struct kvm_dirty_tlb *cfg); | |
634 | ||
635 | long kvmppc_alloc_lpid(void); | |
636 | void kvmppc_claim_lpid(long lpid); | |
637 | void kvmppc_free_lpid(long lpid); | |
638 | void kvmppc_init_lpid(unsigned long nr_lpids); | |
639 | ||
640 | static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) | |
641 | { | |
642 | struct page *page; | |
643 | /* | |
644 | * We can only access pages that the kernel maps | |
645 | * as memory. Bail out for unmapped ones. | |
646 | */ | |
647 | if (!pfn_valid(pfn)) | |
648 | return; | |
649 | ||
650 | /* Clear i-cache for new pages */ | |
651 | page = pfn_to_page(pfn); | |
652 | if (!test_bit(PG_arch_1, &page->flags)) { | |
653 | flush_dcache_icache_page(page); | |
654 | set_bit(PG_arch_1, &page->flags); | |
655 | } | |
656 | } | |
657 | ||
658 | /* | |
659 | * Shared struct helpers. The shared struct can be little or big endian, | |
660 | * depending on the guest endianness. So expose helpers to all of them. | |
661 | */ | |
662 | static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) | |
663 | { | |
664 | #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) | |
665 | /* Only Book3S_64 PR supports bi-endian for now */ | |
666 | return vcpu->arch.shared_big_endian; | |
667 | #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__) | |
668 | /* Book3s_64 HV on little endian is always little endian */ | |
669 | return false; | |
670 | #else | |
671 | return true; | |
672 | #endif | |
673 | } | |
674 | ||
675 | #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ | |
676 | static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ | |
677 | { \ | |
678 | return mfspr(bookehv_spr); \ | |
679 | } \ | |
680 | ||
681 | #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ | |
682 | static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ | |
683 | { \ | |
684 | mtspr(bookehv_spr, val); \ | |
685 | } \ | |
686 | ||
687 | #define SHARED_WRAPPER_GET(reg, size) \ | |
688 | static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ | |
689 | { \ | |
690 | if (kvmppc_shared_big_endian(vcpu)) \ | |
691 | return be##size##_to_cpu(vcpu->arch.shared->reg); \ | |
692 | else \ | |
693 | return le##size##_to_cpu(vcpu->arch.shared->reg); \ | |
694 | } \ | |
695 | ||
696 | #define SHARED_WRAPPER_SET(reg, size) \ | |
697 | static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ | |
698 | { \ | |
699 | if (kvmppc_shared_big_endian(vcpu)) \ | |
700 | vcpu->arch.shared->reg = cpu_to_be##size(val); \ | |
701 | else \ | |
702 | vcpu->arch.shared->reg = cpu_to_le##size(val); \ | |
703 | } \ | |
704 | ||
705 | #define SHARED_WRAPPER(reg, size) \ | |
706 | SHARED_WRAPPER_GET(reg, size) \ | |
707 | SHARED_WRAPPER_SET(reg, size) \ | |
708 | ||
709 | #define SPRNG_WRAPPER(reg, bookehv_spr) \ | |
710 | SPRNG_WRAPPER_GET(reg, bookehv_spr) \ | |
711 | SPRNG_WRAPPER_SET(reg, bookehv_spr) \ | |
712 | ||
713 | #ifdef CONFIG_KVM_BOOKE_HV | |
714 | ||
715 | #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ | |
716 | SPRNG_WRAPPER(reg, bookehv_spr) \ | |
717 | ||
718 | #else | |
719 | ||
720 | #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ | |
721 | SHARED_WRAPPER(reg, size) \ | |
722 | ||
723 | #endif | |
724 | ||
725 | SHARED_WRAPPER(critical, 64) | |
726 | SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) | |
727 | SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) | |
728 | SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) | |
729 | SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) | |
730 | SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) | |
731 | SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) | |
732 | SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) | |
733 | SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) | |
734 | SHARED_WRAPPER_GET(msr, 64) | |
735 | static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) | |
736 | { | |
737 | if (kvmppc_shared_big_endian(vcpu)) | |
738 | vcpu->arch.shared->msr = cpu_to_be64(val); | |
739 | else | |
740 | vcpu->arch.shared->msr = cpu_to_le64(val); | |
741 | } | |
742 | SHARED_WRAPPER(dsisr, 32) | |
743 | SHARED_WRAPPER(int_pending, 32) | |
744 | SHARED_WRAPPER(sprg4, 64) | |
745 | SHARED_WRAPPER(sprg5, 64) | |
746 | SHARED_WRAPPER(sprg6, 64) | |
747 | SHARED_WRAPPER(sprg7, 64) | |
748 | ||
749 | static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) | |
750 | { | |
751 | if (kvmppc_shared_big_endian(vcpu)) | |
752 | return be32_to_cpu(vcpu->arch.shared->sr[nr]); | |
753 | else | |
754 | return le32_to_cpu(vcpu->arch.shared->sr[nr]); | |
755 | } | |
756 | ||
757 | static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val) | |
758 | { | |
759 | if (kvmppc_shared_big_endian(vcpu)) | |
760 | vcpu->arch.shared->sr[nr] = cpu_to_be32(val); | |
761 | else | |
762 | vcpu->arch.shared->sr[nr] = cpu_to_le32(val); | |
763 | } | |
764 | ||
765 | /* | |
766 | * Please call after prepare_to_enter. This function puts the lazy ee and irq | |
767 | * disabled tracking state back to normal mode, without actually enabling | |
768 | * interrupts. | |
769 | */ | |
770 | static inline void kvmppc_fix_ee_before_entry(void) | |
771 | { | |
772 | trace_hardirqs_on(); | |
773 | ||
774 | #ifdef CONFIG_PPC64 | |
775 | /* | |
776 | * To avoid races, the caller must have gone directly from having | |
777 | * interrupts fully-enabled to hard-disabled. | |
778 | */ | |
779 | WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); | |
780 | ||
781 | /* Only need to enable IRQs by hard enabling them after this */ | |
782 | local_paca->irq_happened = 0; | |
783 | local_paca->soft_enabled = 1; | |
784 | #endif | |
785 | } | |
786 | ||
787 | static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) | |
788 | { | |
789 | ulong ea; | |
790 | ulong msr_64bit = 0; | |
791 | ||
792 | ea = kvmppc_get_gpr(vcpu, rb); | |
793 | if (ra) | |
794 | ea += kvmppc_get_gpr(vcpu, ra); | |
795 | ||
796 | #if defined(CONFIG_PPC_BOOK3E_64) | |
797 | msr_64bit = MSR_CM; | |
798 | #elif defined(CONFIG_PPC_BOOK3S_64) | |
799 | msr_64bit = MSR_SF; | |
800 | #endif | |
801 | ||
802 | if (!(kvmppc_get_msr(vcpu) & msr_64bit)) | |
803 | ea = (uint32_t)ea; | |
804 | ||
805 | return ea; | |
806 | } | |
807 | ||
808 | extern void xics_wake_cpu(int cpu); | |
809 | ||
810 | #endif /* __POWERPC_KVM_PPC_H__ */ |