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 page *kvm_alloc_hpt(unsigned long nr_pages);
174 extern void kvm_release_hpt(struct page *page, unsigned long nr_pages);
175 extern int kvmppc_core_init_vm(struct kvm *kvm);
176 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
177 extern void kvmppc_core_free_memslot(struct kvm *kvm,
178 struct kvm_memory_slot *free,
179 struct kvm_memory_slot *dont);
180 extern int kvmppc_core_create_memslot(struct kvm *kvm,
181 struct kvm_memory_slot *slot,
182 unsigned long npages);
183 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
184 struct kvm_memory_slot *memslot,
185 const struct kvm_userspace_memory_region *mem);
186 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
187 const struct kvm_userspace_memory_region *mem,
188 const struct kvm_memory_slot *old,
189 const struct kvm_memory_slot *new);
190 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
191 struct kvm_ppc_smmu_info *info);
192 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
193 struct kvm_memory_slot *memslot);
194
195 extern int kvmppc_bookehv_init(void);
196 extern void kvmppc_bookehv_exit(void);
197
198 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
199
200 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
201
202 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
203
204 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
205 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
206 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
207 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
208 u32 priority);
209 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
210 u32 *priority);
211 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
212 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
213
214 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
215 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
216
217 union kvmppc_one_reg {
218 u32 wval;
219 u64 dval;
220 vector128 vval;
221 u64 vsxval[2];
222 struct {
223 u64 addr;
224 u64 length;
225 } vpaval;
226 };
227
228 struct kvmppc_ops {
229 struct module *owner;
230 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
231 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
232 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
233 union kvmppc_one_reg *val);
234 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
235 union kvmppc_one_reg *val);
236 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
237 void (*vcpu_put)(struct kvm_vcpu *vcpu);
238 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
239 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
240 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
241 void (*vcpu_free)(struct kvm_vcpu *vcpu);
242 int (*check_requests)(struct kvm_vcpu *vcpu);
243 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
244 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
245 int (*prepare_memory_region)(struct kvm *kvm,
246 struct kvm_memory_slot *memslot,
247 const struct kvm_userspace_memory_region *mem);
248 void (*commit_memory_region)(struct kvm *kvm,
249 const struct kvm_userspace_memory_region *mem,
250 const struct kvm_memory_slot *old,
251 const struct kvm_memory_slot *new);
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 extern int kvmppc_hwrng_present(void);
308
309 /*
310 * Cuts out inst bits with ordering according to spec.
311 * That means the leftmost bit is zero. All given bits are included.
312 */
kvmppc_get_field(u64 inst,int msb,int lsb)313 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
314 {
315 u32 r;
316 u32 mask;
317
318 BUG_ON(msb > lsb);
319
320 mask = (1 << (lsb - msb + 1)) - 1;
321 r = (inst >> (63 - lsb)) & mask;
322
323 return r;
324 }
325
326 /*
327 * Replaces inst bits with ordering according to spec.
328 */
kvmppc_set_field(u64 inst,int msb,int lsb,int value)329 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
330 {
331 u32 r;
332 u32 mask;
333
334 BUG_ON(msb > lsb);
335
336 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
337 r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
338
339 return r;
340 }
341
342 #define one_reg_size(id) \
343 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
344
345 #define get_reg_val(id, reg) ({ \
346 union kvmppc_one_reg __u; \
347 switch (one_reg_size(id)) { \
348 case 4: __u.wval = (reg); break; \
349 case 8: __u.dval = (reg); break; \
350 default: BUG(); \
351 } \
352 __u; \
353 })
354
355
356 #define set_reg_val(id, val) ({ \
357 u64 __v; \
358 switch (one_reg_size(id)) { \
359 case 4: __v = (val).wval; break; \
360 case 8: __v = (val).dval; break; \
361 default: BUG(); \
362 } \
363 __v; \
364 })
365
366 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
367 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
368
369 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
370 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
371
372 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
373 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
374 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
375 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
376
377 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
378
379 struct openpic;
380
381 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
382 extern void kvm_cma_reserve(void) __init;
kvmppc_set_xics_phys(int cpu,unsigned long addr)383 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
384 {
385 paca[cpu].kvm_hstate.xics_phys = addr;
386 }
387
kvmppc_get_xics_latch(void)388 static inline u32 kvmppc_get_xics_latch(void)
389 {
390 u32 xirr;
391
392 xirr = get_paca()->kvm_hstate.saved_xirr;
393 get_paca()->kvm_hstate.saved_xirr = 0;
394 return xirr;
395 }
396
kvmppc_set_host_ipi(int cpu,u8 host_ipi)397 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
398 {
399 paca[cpu].kvm_hstate.host_ipi = host_ipi;
400 }
401
kvmppc_fast_vcpu_kick(struct kvm_vcpu * vcpu)402 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
403 {
404 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
405 }
406
407 extern void kvm_hv_vm_activated(void);
408 extern void kvm_hv_vm_deactivated(void);
409 extern bool kvm_hv_mode_active(void);
410
411 #else
kvm_cma_reserve(void)412 static inline void __init kvm_cma_reserve(void)
413 {}
414
kvmppc_set_xics_phys(int cpu,unsigned long addr)415 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
416 {}
417
kvmppc_get_xics_latch(void)418 static inline u32 kvmppc_get_xics_latch(void)
419 {
420 return 0;
421 }
422
kvmppc_set_host_ipi(int cpu,u8 host_ipi)423 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
424 {}
425
kvmppc_fast_vcpu_kick(struct kvm_vcpu * vcpu)426 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
427 {
428 kvm_vcpu_kick(vcpu);
429 }
430
kvm_hv_mode_active(void)431 static inline bool kvm_hv_mode_active(void) { return false; }
432
433 #endif
434
435 #ifdef CONFIG_KVM_XICS
kvmppc_xics_enabled(struct kvm_vcpu * vcpu)436 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
437 {
438 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
439 }
440 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
441 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server);
442 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args);
443 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
444 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
445 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
446 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
447 struct kvm_vcpu *vcpu, u32 cpu);
448 #else
kvmppc_xics_enabled(struct kvm_vcpu * vcpu)449 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
450 { return 0; }
kvmppc_xics_free_icp(struct kvm_vcpu * vcpu)451 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
kvmppc_xics_create_icp(struct kvm_vcpu * vcpu,unsigned long server)452 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu,
453 unsigned long server)
454 { return -EINVAL; }
kvm_vm_ioctl_xics_irq(struct kvm * kvm,struct kvm_irq_level * args)455 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm,
456 struct kvm_irq_level *args)
457 { return -ENOTTY; }
kvmppc_xics_hcall(struct kvm_vcpu * vcpu,u32 cmd)458 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
459 { return 0; }
460 #endif
461
kvmppc_get_epr(struct kvm_vcpu * vcpu)462 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
463 {
464 #ifdef CONFIG_KVM_BOOKE_HV
465 return mfspr(SPRN_GEPR);
466 #elif defined(CONFIG_BOOKE)
467 return vcpu->arch.epr;
468 #else
469 return 0;
470 #endif
471 }
472
kvmppc_set_epr(struct kvm_vcpu * vcpu,u32 epr)473 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
474 {
475 #ifdef CONFIG_KVM_BOOKE_HV
476 mtspr(SPRN_GEPR, epr);
477 #elif defined(CONFIG_BOOKE)
478 vcpu->arch.epr = epr;
479 #endif
480 }
481
482 #ifdef CONFIG_KVM_MPIC
483
484 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
485 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
486 u32 cpu);
487 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
488
489 #else
490
kvmppc_mpic_set_epr(struct kvm_vcpu * vcpu)491 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
492 {
493 }
494
kvmppc_mpic_connect_vcpu(struct kvm_device * dev,struct kvm_vcpu * vcpu,u32 cpu)495 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
496 struct kvm_vcpu *vcpu, u32 cpu)
497 {
498 return -EINVAL;
499 }
500
kvmppc_mpic_disconnect_vcpu(struct openpic * opp,struct kvm_vcpu * vcpu)501 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
502 struct kvm_vcpu *vcpu)
503 {
504 }
505
506 #endif /* CONFIG_KVM_MPIC */
507
508 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
509 struct kvm_config_tlb *cfg);
510 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
511 struct kvm_dirty_tlb *cfg);
512
513 long kvmppc_alloc_lpid(void);
514 void kvmppc_claim_lpid(long lpid);
515 void kvmppc_free_lpid(long lpid);
516 void kvmppc_init_lpid(unsigned long nr_lpids);
517
kvmppc_mmu_flush_icache(pfn_t pfn)518 static inline void kvmppc_mmu_flush_icache(pfn_t pfn)
519 {
520 struct page *page;
521 /*
522 * We can only access pages that the kernel maps
523 * as memory. Bail out for unmapped ones.
524 */
525 if (!pfn_valid(pfn))
526 return;
527
528 /* Clear i-cache for new pages */
529 page = pfn_to_page(pfn);
530 if (!test_bit(PG_arch_1, &page->flags)) {
531 flush_dcache_icache_page(page);
532 set_bit(PG_arch_1, &page->flags);
533 }
534 }
535
536 /*
537 * Shared struct helpers. The shared struct can be little or big endian,
538 * depending on the guest endianness. So expose helpers to all of them.
539 */
kvmppc_shared_big_endian(struct kvm_vcpu * vcpu)540 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
541 {
542 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
543 /* Only Book3S_64 PR supports bi-endian for now */
544 return vcpu->arch.shared_big_endian;
545 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
546 /* Book3s_64 HV on little endian is always little endian */
547 return false;
548 #else
549 return true;
550 #endif
551 }
552
553 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \
554 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
555 { \
556 return mfspr(bookehv_spr); \
557 } \
558
559 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \
560 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \
561 { \
562 mtspr(bookehv_spr, val); \
563 } \
564
565 #define SHARED_WRAPPER_GET(reg, size) \
566 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
567 { \
568 if (kvmppc_shared_big_endian(vcpu)) \
569 return be##size##_to_cpu(vcpu->arch.shared->reg); \
570 else \
571 return le##size##_to_cpu(vcpu->arch.shared->reg); \
572 } \
573
574 #define SHARED_WRAPPER_SET(reg, size) \
575 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
576 { \
577 if (kvmppc_shared_big_endian(vcpu)) \
578 vcpu->arch.shared->reg = cpu_to_be##size(val); \
579 else \
580 vcpu->arch.shared->reg = cpu_to_le##size(val); \
581 } \
582
583 #define SHARED_WRAPPER(reg, size) \
584 SHARED_WRAPPER_GET(reg, size) \
585 SHARED_WRAPPER_SET(reg, size) \
586
587 #define SPRNG_WRAPPER(reg, bookehv_spr) \
588 SPRNG_WRAPPER_GET(reg, bookehv_spr) \
589 SPRNG_WRAPPER_SET(reg, bookehv_spr) \
590
591 #ifdef CONFIG_KVM_BOOKE_HV
592
593 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
594 SPRNG_WRAPPER(reg, bookehv_spr) \
595
596 #else
597
598 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
599 SHARED_WRAPPER(reg, size) \
600
601 #endif
602
603 SHARED_WRAPPER(critical, 64)
604 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
605 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
606 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
607 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
608 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
609 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
610 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
611 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
612 SHARED_WRAPPER_GET(msr, 64)
kvmppc_set_msr_fast(struct kvm_vcpu * vcpu,u64 val)613 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
614 {
615 if (kvmppc_shared_big_endian(vcpu))
616 vcpu->arch.shared->msr = cpu_to_be64(val);
617 else
618 vcpu->arch.shared->msr = cpu_to_le64(val);
619 }
620 SHARED_WRAPPER(dsisr, 32)
621 SHARED_WRAPPER(int_pending, 32)
622 SHARED_WRAPPER(sprg4, 64)
623 SHARED_WRAPPER(sprg5, 64)
624 SHARED_WRAPPER(sprg6, 64)
625 SHARED_WRAPPER(sprg7, 64)
626
kvmppc_get_sr(struct kvm_vcpu * vcpu,int nr)627 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
628 {
629 if (kvmppc_shared_big_endian(vcpu))
630 return be32_to_cpu(vcpu->arch.shared->sr[nr]);
631 else
632 return le32_to_cpu(vcpu->arch.shared->sr[nr]);
633 }
634
kvmppc_set_sr(struct kvm_vcpu * vcpu,int nr,u32 val)635 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
636 {
637 if (kvmppc_shared_big_endian(vcpu))
638 vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
639 else
640 vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
641 }
642
643 /*
644 * Please call after prepare_to_enter. This function puts the lazy ee and irq
645 * disabled tracking state back to normal mode, without actually enabling
646 * interrupts.
647 */
kvmppc_fix_ee_before_entry(void)648 static inline void kvmppc_fix_ee_before_entry(void)
649 {
650 trace_hardirqs_on();
651
652 #ifdef CONFIG_PPC64
653 /*
654 * To avoid races, the caller must have gone directly from having
655 * interrupts fully-enabled to hard-disabled.
656 */
657 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
658
659 /* Only need to enable IRQs by hard enabling them after this */
660 local_paca->irq_happened = 0;
661 local_paca->soft_enabled = 1;
662 #endif
663 }
664
kvmppc_get_ea_indexed(struct kvm_vcpu * vcpu,int ra,int rb)665 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
666 {
667 ulong ea;
668 ulong msr_64bit = 0;
669
670 ea = kvmppc_get_gpr(vcpu, rb);
671 if (ra)
672 ea += kvmppc_get_gpr(vcpu, ra);
673
674 #if defined(CONFIG_PPC_BOOK3E_64)
675 msr_64bit = MSR_CM;
676 #elif defined(CONFIG_PPC_BOOK3S_64)
677 msr_64bit = MSR_SF;
678 #endif
679
680 if (!(kvmppc_get_msr(vcpu) & msr_64bit))
681 ea = (uint32_t)ea;
682
683 return ea;
684 }
685
686 extern void xics_wake_cpu(int cpu);
687
688 #endif /* __POWERPC_KVM_PPC_H__ */
689