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 *args);
169 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
170 unsigned long ioba, unsigned long tce);
171 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
172 unsigned long ioba);
173 extern struct kvm_rma_info *kvm_alloc_rma(void);
174 extern void kvm_release_rma(struct kvm_rma_info *ri);
175 extern struct page *kvm_alloc_hpt(unsigned long nr_pages);
176 extern void kvm_release_hpt(struct page *page, unsigned long nr_pages);
177 extern int kvmppc_core_init_vm(struct kvm *kvm);
178 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
179 extern void kvmppc_core_free_memslot(struct kvm *kvm,
180 struct kvm_memory_slot *free,
181 struct kvm_memory_slot *dont);
182 extern int kvmppc_core_create_memslot(struct kvm *kvm,
183 struct kvm_memory_slot *slot,
184 unsigned long npages);
185 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
186 struct kvm_memory_slot *memslot,
187 struct kvm_userspace_memory_region *mem);
188 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
189 struct kvm_userspace_memory_region *mem,
190 const struct kvm_memory_slot *old);
191 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
192 struct kvm_ppc_smmu_info *info);
193 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
194 struct kvm_memory_slot *memslot);
195
196 extern int kvmppc_bookehv_init(void);
197 extern void kvmppc_bookehv_exit(void);
198
199 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
200
201 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
202
203 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
204
205 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
206 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
207 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
208 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
209 u32 priority);
210 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
211 u32 *priority);
212 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
213 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
214
215 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
216 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
217
218 union kvmppc_one_reg {
219 u32 wval;
220 u64 dval;
221 vector128 vval;
222 u64 vsxval[2];
223 struct {
224 u64 addr;
225 u64 length;
226 } vpaval;
227 };
228
229 struct kvmppc_ops {
230 struct module *owner;
231 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
232 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
233 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
234 union kvmppc_one_reg *val);
235 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
236 union kvmppc_one_reg *val);
237 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
238 void (*vcpu_put)(struct kvm_vcpu *vcpu);
239 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
240 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
241 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
242 void (*vcpu_free)(struct kvm_vcpu *vcpu);
243 int (*check_requests)(struct kvm_vcpu *vcpu);
244 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
245 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
246 int (*prepare_memory_region)(struct kvm *kvm,
247 struct kvm_memory_slot *memslot,
248 struct kvm_userspace_memory_region *mem);
249 void (*commit_memory_region)(struct kvm *kvm,
250 struct kvm_userspace_memory_region *mem,
251 const struct kvm_memory_slot *old);
252 int (*unmap_hva)(struct kvm *kvm, unsigned long hva);
253 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start,
254 unsigned long end);
255 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end);
256 int (*test_age_hva)(struct kvm *kvm, unsigned long hva);
257 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte);
258 void (*mmu_destroy)(struct kvm_vcpu *vcpu);
259 void (*free_memslot)(struct kvm_memory_slot *free,
260 struct kvm_memory_slot *dont);
261 int (*create_memslot)(struct kvm_memory_slot *slot,
262 unsigned long npages);
263 int (*init_vm)(struct kvm *kvm);
264 void (*destroy_vm)(struct kvm *kvm);
265 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
266 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu,
267 unsigned int inst, int *advance);
268 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
269 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
270 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
271 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
272 unsigned long arg);
273 int (*hcall_implemented)(unsigned long hcall);
274 };
275
276 extern struct kvmppc_ops *kvmppc_hv_ops;
277 extern struct kvmppc_ops *kvmppc_pr_ops;
278
kvmppc_get_last_inst(struct kvm_vcpu * vcpu,enum instruction_type type,u32 * inst)279 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
280 enum instruction_type type, u32 *inst)
281 {
282 int ret = EMULATE_DONE;
283 u32 fetched_inst;
284
285 /* Load the instruction manually if it failed to do so in the
286 * exit path */
287 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
288 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
289
290 /* Write fetch_failed unswapped if the fetch failed */
291 if (ret == EMULATE_DONE)
292 fetched_inst = kvmppc_need_byteswap(vcpu) ?
293 swab32(vcpu->arch.last_inst) :
294 vcpu->arch.last_inst;
295 else
296 fetched_inst = vcpu->arch.last_inst;
297
298 *inst = fetched_inst;
299 return ret;
300 }
301
is_kvmppc_hv_enabled(struct kvm * kvm)302 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
303 {
304 return kvm->arch.kvm_ops == kvmppc_hv_ops;
305 }
306
307 /*
308 * Cuts out inst bits with ordering according to spec.
309 * That means the leftmost bit is zero. All given bits are included.
310 */
kvmppc_get_field(u64 inst,int msb,int lsb)311 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
312 {
313 u32 r;
314 u32 mask;
315
316 BUG_ON(msb > lsb);
317
318 mask = (1 << (lsb - msb + 1)) - 1;
319 r = (inst >> (63 - lsb)) & mask;
320
321 return r;
322 }
323
324 /*
325 * Replaces inst bits with ordering according to spec.
326 */
kvmppc_set_field(u64 inst,int msb,int lsb,int value)327 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
328 {
329 u32 r;
330 u32 mask;
331
332 BUG_ON(msb > lsb);
333
334 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
335 r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
336
337 return r;
338 }
339
340 #define one_reg_size(id) \
341 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
342
343 #define get_reg_val(id, reg) ({ \
344 union kvmppc_one_reg __u; \
345 switch (one_reg_size(id)) { \
346 case 4: __u.wval = (reg); break; \
347 case 8: __u.dval = (reg); break; \
348 default: BUG(); \
349 } \
350 __u; \
351 })
352
353
354 #define set_reg_val(id, val) ({ \
355 u64 __v; \
356 switch (one_reg_size(id)) { \
357 case 4: __v = (val).wval; break; \
358 case 8: __v = (val).dval; break; \
359 default: BUG(); \
360 } \
361 __v; \
362 })
363
364 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
365 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
366
367 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
368 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
369
370 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
371 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
372 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
373 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
374
375 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
376
377 struct openpic;
378
379 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
380 extern void kvm_cma_reserve(void) __init;
kvmppc_set_xics_phys(int cpu,unsigned long addr)381 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
382 {
383 paca[cpu].kvm_hstate.xics_phys = addr;
384 }
385
kvmppc_get_xics_latch(void)386 static inline u32 kvmppc_get_xics_latch(void)
387 {
388 u32 xirr;
389
390 xirr = get_paca()->kvm_hstate.saved_xirr;
391 get_paca()->kvm_hstate.saved_xirr = 0;
392 return xirr;
393 }
394
kvmppc_set_host_ipi(int cpu,u8 host_ipi)395 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
396 {
397 paca[cpu].kvm_hstate.host_ipi = host_ipi;
398 }
399
kvmppc_fast_vcpu_kick(struct kvm_vcpu * vcpu)400 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
401 {
402 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
403 }
404
405 extern void kvm_hv_vm_activated(void);
406 extern void kvm_hv_vm_deactivated(void);
407 extern bool kvm_hv_mode_active(void);
408
409 #else
kvm_cma_reserve(void)410 static inline void __init kvm_cma_reserve(void)
411 {}
412
kvmppc_set_xics_phys(int cpu,unsigned long addr)413 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
414 {}
415
kvmppc_get_xics_latch(void)416 static inline u32 kvmppc_get_xics_latch(void)
417 {
418 return 0;
419 }
420
kvmppc_set_host_ipi(int cpu,u8 host_ipi)421 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
422 {}
423
kvmppc_fast_vcpu_kick(struct kvm_vcpu * vcpu)424 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
425 {
426 kvm_vcpu_kick(vcpu);
427 }
428
kvm_hv_mode_active(void)429 static inline bool kvm_hv_mode_active(void) { return false; }
430
431 #endif
432
433 #ifdef CONFIG_KVM_XICS
kvmppc_xics_enabled(struct kvm_vcpu * vcpu)434 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
435 {
436 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
437 }
438 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
439 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server);
440 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args);
441 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
442 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
443 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
444 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
445 struct kvm_vcpu *vcpu, u32 cpu);
446 #else
kvmppc_xics_enabled(struct kvm_vcpu * vcpu)447 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
448 { return 0; }
kvmppc_xics_free_icp(struct kvm_vcpu * vcpu)449 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
kvmppc_xics_create_icp(struct kvm_vcpu * vcpu,unsigned long server)450 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu,
451 unsigned long server)
452 { return -EINVAL; }
kvm_vm_ioctl_xics_irq(struct kvm * kvm,struct kvm_irq_level * args)453 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm,
454 struct kvm_irq_level *args)
455 { return -ENOTTY; }
kvmppc_xics_hcall(struct kvm_vcpu * vcpu,u32 cmd)456 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
457 { return 0; }
458 #endif
459
kvmppc_get_epr(struct kvm_vcpu * vcpu)460 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
461 {
462 #ifdef CONFIG_KVM_BOOKE_HV
463 return mfspr(SPRN_GEPR);
464 #elif defined(CONFIG_BOOKE)
465 return vcpu->arch.epr;
466 #else
467 return 0;
468 #endif
469 }
470
kvmppc_set_epr(struct kvm_vcpu * vcpu,u32 epr)471 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
472 {
473 #ifdef CONFIG_KVM_BOOKE_HV
474 mtspr(SPRN_GEPR, epr);
475 #elif defined(CONFIG_BOOKE)
476 vcpu->arch.epr = epr;
477 #endif
478 }
479
480 #ifdef CONFIG_KVM_MPIC
481
482 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
483 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
484 u32 cpu);
485 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
486
487 #else
488
kvmppc_mpic_set_epr(struct kvm_vcpu * vcpu)489 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
490 {
491 }
492
kvmppc_mpic_connect_vcpu(struct kvm_device * dev,struct kvm_vcpu * vcpu,u32 cpu)493 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
494 struct kvm_vcpu *vcpu, u32 cpu)
495 {
496 return -EINVAL;
497 }
498
kvmppc_mpic_disconnect_vcpu(struct openpic * opp,struct kvm_vcpu * vcpu)499 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
500 struct kvm_vcpu *vcpu)
501 {
502 }
503
504 #endif /* CONFIG_KVM_MPIC */
505
506 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
507 struct kvm_config_tlb *cfg);
508 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
509 struct kvm_dirty_tlb *cfg);
510
511 long kvmppc_alloc_lpid(void);
512 void kvmppc_claim_lpid(long lpid);
513 void kvmppc_free_lpid(long lpid);
514 void kvmppc_init_lpid(unsigned long nr_lpids);
515
kvmppc_mmu_flush_icache(pfn_t pfn)516 static inline void kvmppc_mmu_flush_icache(pfn_t pfn)
517 {
518 struct page *page;
519 /*
520 * We can only access pages that the kernel maps
521 * as memory. Bail out for unmapped ones.
522 */
523 if (!pfn_valid(pfn))
524 return;
525
526 /* Clear i-cache for new pages */
527 page = pfn_to_page(pfn);
528 if (!test_bit(PG_arch_1, &page->flags)) {
529 flush_dcache_icache_page(page);
530 set_bit(PG_arch_1, &page->flags);
531 }
532 }
533
534 /*
535 * Shared struct helpers. The shared struct can be little or big endian,
536 * depending on the guest endianness. So expose helpers to all of them.
537 */
kvmppc_shared_big_endian(struct kvm_vcpu * vcpu)538 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
539 {
540 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
541 /* Only Book3S_64 PR supports bi-endian for now */
542 return vcpu->arch.shared_big_endian;
543 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
544 /* Book3s_64 HV on little endian is always little endian */
545 return false;
546 #else
547 return true;
548 #endif
549 }
550
551 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \
552 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
553 { \
554 return mfspr(bookehv_spr); \
555 } \
556
557 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \
558 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \
559 { \
560 mtspr(bookehv_spr, val); \
561 } \
562
563 #define SHARED_WRAPPER_GET(reg, size) \
564 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
565 { \
566 if (kvmppc_shared_big_endian(vcpu)) \
567 return be##size##_to_cpu(vcpu->arch.shared->reg); \
568 else \
569 return le##size##_to_cpu(vcpu->arch.shared->reg); \
570 } \
571
572 #define SHARED_WRAPPER_SET(reg, size) \
573 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
574 { \
575 if (kvmppc_shared_big_endian(vcpu)) \
576 vcpu->arch.shared->reg = cpu_to_be##size(val); \
577 else \
578 vcpu->arch.shared->reg = cpu_to_le##size(val); \
579 } \
580
581 #define SHARED_WRAPPER(reg, size) \
582 SHARED_WRAPPER_GET(reg, size) \
583 SHARED_WRAPPER_SET(reg, size) \
584
585 #define SPRNG_WRAPPER(reg, bookehv_spr) \
586 SPRNG_WRAPPER_GET(reg, bookehv_spr) \
587 SPRNG_WRAPPER_SET(reg, bookehv_spr) \
588
589 #ifdef CONFIG_KVM_BOOKE_HV
590
591 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
592 SPRNG_WRAPPER(reg, bookehv_spr) \
593
594 #else
595
596 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
597 SHARED_WRAPPER(reg, size) \
598
599 #endif
600
601 SHARED_WRAPPER(critical, 64)
602 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
603 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
604 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
605 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
606 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
607 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
608 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
609 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
610 SHARED_WRAPPER_GET(msr, 64)
kvmppc_set_msr_fast(struct kvm_vcpu * vcpu,u64 val)611 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
612 {
613 if (kvmppc_shared_big_endian(vcpu))
614 vcpu->arch.shared->msr = cpu_to_be64(val);
615 else
616 vcpu->arch.shared->msr = cpu_to_le64(val);
617 }
618 SHARED_WRAPPER(dsisr, 32)
619 SHARED_WRAPPER(int_pending, 32)
620 SHARED_WRAPPER(sprg4, 64)
621 SHARED_WRAPPER(sprg5, 64)
622 SHARED_WRAPPER(sprg6, 64)
623 SHARED_WRAPPER(sprg7, 64)
624
kvmppc_get_sr(struct kvm_vcpu * vcpu,int nr)625 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
626 {
627 if (kvmppc_shared_big_endian(vcpu))
628 return be32_to_cpu(vcpu->arch.shared->sr[nr]);
629 else
630 return le32_to_cpu(vcpu->arch.shared->sr[nr]);
631 }
632
kvmppc_set_sr(struct kvm_vcpu * vcpu,int nr,u32 val)633 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
634 {
635 if (kvmppc_shared_big_endian(vcpu))
636 vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
637 else
638 vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
639 }
640
641 /*
642 * Please call after prepare_to_enter. This function puts the lazy ee and irq
643 * disabled tracking state back to normal mode, without actually enabling
644 * interrupts.
645 */
kvmppc_fix_ee_before_entry(void)646 static inline void kvmppc_fix_ee_before_entry(void)
647 {
648 trace_hardirqs_on();
649
650 #ifdef CONFIG_PPC64
651 /*
652 * To avoid races, the caller must have gone directly from having
653 * interrupts fully-enabled to hard-disabled.
654 */
655 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
656
657 /* Only need to enable IRQs by hard enabling them after this */
658 local_paca->irq_happened = 0;
659 local_paca->soft_enabled = 1;
660 #endif
661 }
662
kvmppc_get_ea_indexed(struct kvm_vcpu * vcpu,int ra,int rb)663 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
664 {
665 ulong ea;
666 ulong msr_64bit = 0;
667
668 ea = kvmppc_get_gpr(vcpu, rb);
669 if (ra)
670 ea += kvmppc_get_gpr(vcpu, ra);
671
672 #if defined(CONFIG_PPC_BOOK3E_64)
673 msr_64bit = MSR_CM;
674 #elif defined(CONFIG_PPC_BOOK3S_64)
675 msr_64bit = MSR_SF;
676 #endif
677
678 if (!(kvmppc_get_msr(vcpu) & msr_64bit))
679 ea = (uint32_t)ea;
680
681 return ea;
682 }
683
684 extern void xics_wake_cpu(int cpu);
685
686 #endif /* __POWERPC_KVM_PPC_H__ */
687