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(unsigned long nr_pages);
190 extern void kvm_release_hpt(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 };
295
296 extern struct kvmppc_ops *kvmppc_hv_ops;
297 extern struct kvmppc_ops *kvmppc_pr_ops;
298
kvmppc_get_last_inst(struct kvm_vcpu * vcpu,enum instruction_type type,u32 * inst)299 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
300 enum instruction_type type, u32 *inst)
301 {
302 int ret = EMULATE_DONE;
303 u32 fetched_inst;
304
305 /* Load the instruction manually if it failed to do so in the
306 * exit path */
307 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
308 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
309
310 /* Write fetch_failed unswapped if the fetch failed */
311 if (ret == EMULATE_DONE)
312 fetched_inst = kvmppc_need_byteswap(vcpu) ?
313 swab32(vcpu->arch.last_inst) :
314 vcpu->arch.last_inst;
315 else
316 fetched_inst = vcpu->arch.last_inst;
317
318 *inst = fetched_inst;
319 return ret;
320 }
321
is_kvmppc_hv_enabled(struct kvm * kvm)322 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
323 {
324 return kvm->arch.kvm_ops == kvmppc_hv_ops;
325 }
326
327 extern int kvmppc_hwrng_present(void);
328
329 /*
330 * Cuts out inst bits with ordering according to spec.
331 * That means the leftmost bit is zero. All given bits are included.
332 */
kvmppc_get_field(u64 inst,int msb,int lsb)333 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
334 {
335 u32 r;
336 u32 mask;
337
338 BUG_ON(msb > lsb);
339
340 mask = (1 << (lsb - msb + 1)) - 1;
341 r = (inst >> (63 - lsb)) & mask;
342
343 return r;
344 }
345
346 /*
347 * Replaces inst bits with ordering according to spec.
348 */
kvmppc_set_field(u64 inst,int msb,int lsb,int value)349 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
350 {
351 u32 r;
352 u32 mask;
353
354 BUG_ON(msb > lsb);
355
356 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
357 r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
358
359 return r;
360 }
361
362 #define one_reg_size(id) \
363 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
364
365 #define get_reg_val(id, reg) ({ \
366 union kvmppc_one_reg __u; \
367 switch (one_reg_size(id)) { \
368 case 4: __u.wval = (reg); break; \
369 case 8: __u.dval = (reg); break; \
370 default: BUG(); \
371 } \
372 __u; \
373 })
374
375
376 #define set_reg_val(id, val) ({ \
377 u64 __v; \
378 switch (one_reg_size(id)) { \
379 case 4: __v = (val).wval; break; \
380 case 8: __v = (val).dval; break; \
381 default: BUG(); \
382 } \
383 __v; \
384 })
385
386 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
387 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
388
389 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
390 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
391
392 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
393 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
394 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
395 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
396
397 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
398
399 struct openpic;
400
401 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
402 extern void kvm_cma_reserve(void) __init;
kvmppc_set_xics_phys(int cpu,unsigned long addr)403 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
404 {
405 paca[cpu].kvm_hstate.xics_phys = addr;
406 }
407
kvmppc_get_xics_latch(void)408 static inline u32 kvmppc_get_xics_latch(void)
409 {
410 u32 xirr;
411
412 xirr = get_paca()->kvm_hstate.saved_xirr;
413 get_paca()->kvm_hstate.saved_xirr = 0;
414 return xirr;
415 }
416
kvmppc_set_host_ipi(int cpu,u8 host_ipi)417 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
418 {
419 paca[cpu].kvm_hstate.host_ipi = host_ipi;
420 }
421
kvmppc_fast_vcpu_kick(struct kvm_vcpu * vcpu)422 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
423 {
424 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
425 }
426
427 extern void kvm_hv_vm_activated(void);
428 extern void kvm_hv_vm_deactivated(void);
429 extern bool kvm_hv_mode_active(void);
430
431 #else
kvm_cma_reserve(void)432 static inline void __init kvm_cma_reserve(void)
433 {}
434
kvmppc_set_xics_phys(int cpu,unsigned long addr)435 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
436 {}
437
kvmppc_get_xics_latch(void)438 static inline u32 kvmppc_get_xics_latch(void)
439 {
440 return 0;
441 }
442
kvmppc_set_host_ipi(int cpu,u8 host_ipi)443 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
444 {}
445
kvmppc_fast_vcpu_kick(struct kvm_vcpu * vcpu)446 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
447 {
448 kvm_vcpu_kick(vcpu);
449 }
450
kvm_hv_mode_active(void)451 static inline bool kvm_hv_mode_active(void) { return false; }
452
453 #endif
454
455 #ifdef CONFIG_KVM_XICS
kvmppc_xics_enabled(struct kvm_vcpu * vcpu)456 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
457 {
458 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
459 }
460
kvmppc_get_passthru_irqmap(struct kvm * kvm)461 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
462 struct kvm *kvm)
463 {
464 if (kvm && kvm_irq_bypass)
465 return kvm->arch.pimap;
466 return NULL;
467 }
468
469 extern void kvmppc_alloc_host_rm_ops(void);
470 extern void kvmppc_free_host_rm_ops(void);
471 extern void kvmppc_free_pimap(struct kvm *kvm);
472 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall);
473 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
474 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server);
475 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args);
476 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
477 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
478 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
479 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
480 struct kvm_vcpu *vcpu, u32 cpu);
481 extern void kvmppc_xics_ipi_action(void);
482 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq,
483 unsigned long host_irq);
484 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
485 unsigned long host_irq);
486 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, u32 xirr,
487 struct kvmppc_irq_map *irq_map,
488 struct kvmppc_passthru_irqmap *pimap);
489 extern int h_ipi_redirect;
490 #else
kvmppc_get_passthru_irqmap(struct kvm * kvm)491 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
492 struct kvm *kvm)
493 { return NULL; }
kvmppc_alloc_host_rm_ops(void)494 static inline void kvmppc_alloc_host_rm_ops(void) {};
kvmppc_free_host_rm_ops(void)495 static inline void kvmppc_free_host_rm_ops(void) {};
kvmppc_free_pimap(struct kvm * kvm)496 static inline void kvmppc_free_pimap(struct kvm *kvm) {};
kvmppc_xics_rm_complete(struct kvm_vcpu * vcpu,u32 hcall)497 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall)
498 { return 0; }
kvmppc_xics_enabled(struct kvm_vcpu * vcpu)499 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
500 { return 0; }
kvmppc_xics_free_icp(struct kvm_vcpu * vcpu)501 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
kvmppc_xics_create_icp(struct kvm_vcpu * vcpu,unsigned long server)502 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu,
503 unsigned long server)
504 { return -EINVAL; }
kvm_vm_ioctl_xics_irq(struct kvm * kvm,struct kvm_irq_level * args)505 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm,
506 struct kvm_irq_level *args)
507 { return -ENOTTY; }
kvmppc_xics_hcall(struct kvm_vcpu * vcpu,u32 cmd)508 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
509 { return 0; }
510 #endif
511
512 /*
513 * Host-side operations we want to set up while running in real
514 * mode in the guest operating on the xics.
515 * Currently only VCPU wakeup is supported.
516 */
517
518 union kvmppc_rm_state {
519 unsigned long raw;
520 struct {
521 u32 in_host;
522 u32 rm_action;
523 };
524 };
525
526 struct kvmppc_host_rm_core {
527 union kvmppc_rm_state rm_state;
528 void *rm_data;
529 char pad[112];
530 };
531
532 struct kvmppc_host_rm_ops {
533 struct kvmppc_host_rm_core *rm_core;
534 void (*vcpu_kick)(struct kvm_vcpu *vcpu);
535 };
536
537 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv;
538
kvmppc_get_epr(struct kvm_vcpu * vcpu)539 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
540 {
541 #ifdef CONFIG_KVM_BOOKE_HV
542 return mfspr(SPRN_GEPR);
543 #elif defined(CONFIG_BOOKE)
544 return vcpu->arch.epr;
545 #else
546 return 0;
547 #endif
548 }
549
kvmppc_set_epr(struct kvm_vcpu * vcpu,u32 epr)550 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
551 {
552 #ifdef CONFIG_KVM_BOOKE_HV
553 mtspr(SPRN_GEPR, epr);
554 #elif defined(CONFIG_BOOKE)
555 vcpu->arch.epr = epr;
556 #endif
557 }
558
559 #ifdef CONFIG_KVM_MPIC
560
561 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
562 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
563 u32 cpu);
564 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
565
566 #else
567
kvmppc_mpic_set_epr(struct kvm_vcpu * vcpu)568 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
569 {
570 }
571
kvmppc_mpic_connect_vcpu(struct kvm_device * dev,struct kvm_vcpu * vcpu,u32 cpu)572 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
573 struct kvm_vcpu *vcpu, u32 cpu)
574 {
575 return -EINVAL;
576 }
577
kvmppc_mpic_disconnect_vcpu(struct openpic * opp,struct kvm_vcpu * vcpu)578 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
579 struct kvm_vcpu *vcpu)
580 {
581 }
582
583 #endif /* CONFIG_KVM_MPIC */
584
585 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
586 struct kvm_config_tlb *cfg);
587 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
588 struct kvm_dirty_tlb *cfg);
589
590 long kvmppc_alloc_lpid(void);
591 void kvmppc_claim_lpid(long lpid);
592 void kvmppc_free_lpid(long lpid);
593 void kvmppc_init_lpid(unsigned long nr_lpids);
594
kvmppc_mmu_flush_icache(kvm_pfn_t pfn)595 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn)
596 {
597 struct page *page;
598 /*
599 * We can only access pages that the kernel maps
600 * as memory. Bail out for unmapped ones.
601 */
602 if (!pfn_valid(pfn))
603 return;
604
605 /* Clear i-cache for new pages */
606 page = pfn_to_page(pfn);
607 if (!test_bit(PG_arch_1, &page->flags)) {
608 flush_dcache_icache_page(page);
609 set_bit(PG_arch_1, &page->flags);
610 }
611 }
612
613 /*
614 * Shared struct helpers. The shared struct can be little or big endian,
615 * depending on the guest endianness. So expose helpers to all of them.
616 */
kvmppc_shared_big_endian(struct kvm_vcpu * vcpu)617 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
618 {
619 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
620 /* Only Book3S_64 PR supports bi-endian for now */
621 return vcpu->arch.shared_big_endian;
622 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
623 /* Book3s_64 HV on little endian is always little endian */
624 return false;
625 #else
626 return true;
627 #endif
628 }
629
630 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \
631 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
632 { \
633 return mfspr(bookehv_spr); \
634 } \
635
636 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \
637 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \
638 { \
639 mtspr(bookehv_spr, val); \
640 } \
641
642 #define SHARED_WRAPPER_GET(reg, size) \
643 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
644 { \
645 if (kvmppc_shared_big_endian(vcpu)) \
646 return be##size##_to_cpu(vcpu->arch.shared->reg); \
647 else \
648 return le##size##_to_cpu(vcpu->arch.shared->reg); \
649 } \
650
651 #define SHARED_WRAPPER_SET(reg, size) \
652 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
653 { \
654 if (kvmppc_shared_big_endian(vcpu)) \
655 vcpu->arch.shared->reg = cpu_to_be##size(val); \
656 else \
657 vcpu->arch.shared->reg = cpu_to_le##size(val); \
658 } \
659
660 #define SHARED_WRAPPER(reg, size) \
661 SHARED_WRAPPER_GET(reg, size) \
662 SHARED_WRAPPER_SET(reg, size) \
663
664 #define SPRNG_WRAPPER(reg, bookehv_spr) \
665 SPRNG_WRAPPER_GET(reg, bookehv_spr) \
666 SPRNG_WRAPPER_SET(reg, bookehv_spr) \
667
668 #ifdef CONFIG_KVM_BOOKE_HV
669
670 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
671 SPRNG_WRAPPER(reg, bookehv_spr) \
672
673 #else
674
675 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
676 SHARED_WRAPPER(reg, size) \
677
678 #endif
679
680 SHARED_WRAPPER(critical, 64)
681 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
682 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
683 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
684 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
685 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
686 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
687 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
688 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
689 SHARED_WRAPPER_GET(msr, 64)
kvmppc_set_msr_fast(struct kvm_vcpu * vcpu,u64 val)690 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
691 {
692 if (kvmppc_shared_big_endian(vcpu))
693 vcpu->arch.shared->msr = cpu_to_be64(val);
694 else
695 vcpu->arch.shared->msr = cpu_to_le64(val);
696 }
697 SHARED_WRAPPER(dsisr, 32)
698 SHARED_WRAPPER(int_pending, 32)
699 SHARED_WRAPPER(sprg4, 64)
700 SHARED_WRAPPER(sprg5, 64)
701 SHARED_WRAPPER(sprg6, 64)
702 SHARED_WRAPPER(sprg7, 64)
703
kvmppc_get_sr(struct kvm_vcpu * vcpu,int nr)704 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
705 {
706 if (kvmppc_shared_big_endian(vcpu))
707 return be32_to_cpu(vcpu->arch.shared->sr[nr]);
708 else
709 return le32_to_cpu(vcpu->arch.shared->sr[nr]);
710 }
711
kvmppc_set_sr(struct kvm_vcpu * vcpu,int nr,u32 val)712 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
713 {
714 if (kvmppc_shared_big_endian(vcpu))
715 vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
716 else
717 vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
718 }
719
720 /*
721 * Please call after prepare_to_enter. This function puts the lazy ee and irq
722 * disabled tracking state back to normal mode, without actually enabling
723 * interrupts.
724 */
kvmppc_fix_ee_before_entry(void)725 static inline void kvmppc_fix_ee_before_entry(void)
726 {
727 trace_hardirqs_on();
728
729 #ifdef CONFIG_PPC64
730 /*
731 * To avoid races, the caller must have gone directly from having
732 * interrupts fully-enabled to hard-disabled.
733 */
734 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
735
736 /* Only need to enable IRQs by hard enabling them after this */
737 local_paca->irq_happened = 0;
738 local_paca->soft_enabled = 1;
739 #endif
740 }
741
kvmppc_get_ea_indexed(struct kvm_vcpu * vcpu,int ra,int rb)742 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
743 {
744 ulong ea;
745 ulong msr_64bit = 0;
746
747 ea = kvmppc_get_gpr(vcpu, rb);
748 if (ra)
749 ea += kvmppc_get_gpr(vcpu, ra);
750
751 #if defined(CONFIG_PPC_BOOK3E_64)
752 msr_64bit = MSR_CM;
753 #elif defined(CONFIG_PPC_BOOK3S_64)
754 msr_64bit = MSR_SF;
755 #endif
756
757 if (!(kvmppc_get_msr(vcpu) & msr_64bit))
758 ea = (uint32_t)ea;
759
760 return ea;
761 }
762
763 extern void xics_wake_cpu(int cpu);
764
765 #endif /* __POWERPC_KVM_PPC_H__ */
766