1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 *
4 * Copyright IBM Corp. 2008
5 *
6 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
7 */
8
9 #ifndef __POWERPC_KVM_PPC_H__
10 #define __POWERPC_KVM_PPC_H__
11
12 /* This file exists just so we can dereference kvm_vcpu, avoiding nested header
13 * dependencies. */
14
15 #include <linux/mutex.h>
16 #include <linux/timer.h>
17 #include <linux/types.h>
18 #include <linux/kvm_types.h>
19 #include <linux/kvm_host.h>
20 #include <linux/bug.h>
21 #ifdef CONFIG_PPC_BOOK3S
22 #include <asm/kvm_book3s.h>
23 #else
24 #include <asm/kvm_booke.h>
25 #endif
26 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
27 #include <asm/paca.h>
28 #include <asm/xive.h>
29 #include <asm/cpu_has_feature.h>
30 #endif
31 #include <asm/inst.h>
32
33 /*
34 * KVMPPC_INST_SW_BREAKPOINT is debug Instruction
35 * for supporting software breakpoint.
36 */
37 #define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00
38
39 enum emulation_result {
40 EMULATE_DONE, /* no further processing */
41 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
42 EMULATE_FAIL, /* can't emulate this instruction */
43 EMULATE_AGAIN, /* something went wrong. go again */
44 EMULATE_EXIT_USER, /* emulation requires exit to user-space */
45 };
46
47 enum instruction_fetch_type {
48 INST_GENERIC,
49 INST_SC, /* system call */
50 };
51
52 enum xlate_instdata {
53 XLATE_INST, /* translate instruction address */
54 XLATE_DATA /* translate data address */
55 };
56
57 enum xlate_readwrite {
58 XLATE_READ, /* check for read permissions */
59 XLATE_WRITE /* check for write permissions */
60 };
61
62 extern int kvmppc_vcpu_run(struct kvm_vcpu *vcpu);
63 extern int __kvmppc_vcpu_run(struct kvm_vcpu *vcpu);
64 extern void kvmppc_handler_highmem(void);
65
66 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
67 extern int kvmppc_handle_load(struct kvm_vcpu *vcpu,
68 unsigned int rt, unsigned int bytes,
69 int is_default_endian);
70 extern int kvmppc_handle_loads(struct kvm_vcpu *vcpu,
71 unsigned int rt, unsigned int bytes,
72 int is_default_endian);
73 extern int kvmppc_handle_vsx_load(struct kvm_vcpu *vcpu,
74 unsigned int rt, unsigned int bytes,
75 int is_default_endian, int mmio_sign_extend);
76 extern int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu,
77 unsigned int rt, unsigned int bytes, int is_default_endian);
78 extern int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu,
79 unsigned int rs, unsigned int bytes, int is_default_endian);
80 extern int kvmppc_handle_store(struct kvm_vcpu *vcpu,
81 u64 val, unsigned int bytes,
82 int is_default_endian);
83 extern int kvmppc_handle_vsx_store(struct kvm_vcpu *vcpu,
84 int rs, unsigned int bytes,
85 int is_default_endian);
86
87 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
88 enum instruction_fetch_type type,
89 unsigned long *inst);
90
91 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
92 bool data);
93 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
94 bool data);
95 extern int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu);
96 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
97 extern int kvmppc_emulate_mmio(struct kvm_vcpu *vcpu);
98 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
99 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
100 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
101 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
102 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
103 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
104
105 /* Core-specific hooks */
106
107 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
108 unsigned int gtlb_idx);
109 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
110 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
111 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
112 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
113 gva_t eaddr);
114 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
115 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
116 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
117 enum xlate_instdata xlid, enum xlate_readwrite xlrw,
118 struct kvmppc_pte *pte);
119
120 extern int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu);
121 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
122 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
123 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
124 struct kvm_translation *tr);
125
126 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
127 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
128
129 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
130 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
131
132 extern void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu,
133 ulong srr1_flags);
134 extern void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu);
135 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu,
136 ulong srr1_flags);
137 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu,
138 ulong srr1_flags);
139 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu,
140 ulong srr1_flags);
141 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu,
142 ulong srr1_flags);
143 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
144 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
145 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
146 struct kvm_interrupt *irq);
147 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
148 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu,
149 ulong dear_flags,
150 ulong esr_flags);
151 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
152 ulong srr1_flags,
153 ulong dar,
154 ulong dsisr);
155 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu);
156 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
157 ulong srr1_flags);
158
159 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
160 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
161
162 extern int kvmppc_booke_init(void);
163 extern void kvmppc_booke_exit(void);
164
165 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
166 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
167
168 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order);
169 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info);
170 extern int kvmppc_alloc_reset_hpt(struct kvm *kvm, int order);
171 extern void kvmppc_free_hpt(struct kvm_hpt_info *info);
172 extern void kvmppc_rmap_reset(struct kvm *kvm);
173 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
174 struct kvm_memory_slot *memslot, unsigned long porder);
175 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
176 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
177 struct iommu_group *grp);
178 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
179 struct iommu_group *grp);
180 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm);
181 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm);
182 extern void kvmppc_setup_partition_table(struct kvm *kvm);
183
184 extern int kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
185 struct kvm_create_spapr_tce_64 *args);
186 #define kvmppc_ioba_validate(stt, ioba, npages) \
187 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \
188 (stt)->size, (ioba), (npages)) ? \
189 H_PARAMETER : H_SUCCESS)
190 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
191 unsigned long ioba, unsigned long tce);
192 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
193 unsigned long liobn, unsigned long ioba,
194 unsigned long tce_list, unsigned long npages);
195 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
196 unsigned long liobn, unsigned long ioba,
197 unsigned long tce_value, unsigned long npages);
198 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
199 unsigned long ioba);
200 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages);
201 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages);
202 extern int kvmppc_core_init_vm(struct kvm *kvm);
203 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
204 extern void kvmppc_core_free_memslot(struct kvm *kvm,
205 struct kvm_memory_slot *slot);
206 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
207 const struct kvm_memory_slot *old,
208 struct kvm_memory_slot *new,
209 enum kvm_mr_change change);
210 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
211 struct kvm_memory_slot *old,
212 const struct kvm_memory_slot *new,
213 enum kvm_mr_change change);
214 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
215 struct kvm_ppc_smmu_info *info);
216 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
217 struct kvm_memory_slot *memslot);
218
219 extern int kvmppc_bookehv_init(void);
220 extern void kvmppc_bookehv_exit(void);
221
222 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
223
224 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
225 extern int kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm,
226 struct kvm_ppc_resize_hpt *rhpt);
227 extern int kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm,
228 struct kvm_ppc_resize_hpt *rhpt);
229
230 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
231
232 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
233 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
234 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
235
236 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
237 u32 priority);
238 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
239 u32 *priority);
240 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
241 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
242
243 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
244 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
245
246 union kvmppc_one_reg {
247 u32 wval;
248 u64 dval;
249 vector128 vval;
250 u64 vsxval[2];
251 u32 vsx32val[4];
252 u16 vsx16val[8];
253 u8 vsx8val[16];
254 struct {
255 u64 addr;
256 u64 length;
257 } vpaval;
258 u64 xive_timaval[2];
259 };
260
261 struct kvmppc_ops {
262 struct module *owner;
263 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
264 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
265 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
266 union kvmppc_one_reg *val);
267 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
268 union kvmppc_one_reg *val);
269 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
270 void (*vcpu_put)(struct kvm_vcpu *vcpu);
271 void (*inject_interrupt)(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags);
272 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
273 int (*vcpu_run)(struct kvm_vcpu *vcpu);
274 int (*vcpu_create)(struct kvm_vcpu *vcpu);
275 void (*vcpu_free)(struct kvm_vcpu *vcpu);
276 int (*check_requests)(struct kvm_vcpu *vcpu);
277 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
278 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
279 int (*prepare_memory_region)(struct kvm *kvm,
280 const struct kvm_memory_slot *old,
281 struct kvm_memory_slot *new,
282 enum kvm_mr_change change);
283 void (*commit_memory_region)(struct kvm *kvm,
284 struct kvm_memory_slot *old,
285 const struct kvm_memory_slot *new,
286 enum kvm_mr_change change);
287 bool (*unmap_gfn_range)(struct kvm *kvm, struct kvm_gfn_range *range);
288 bool (*age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range);
289 bool (*test_age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range);
290 void (*free_memslot)(struct kvm_memory_slot *slot);
291 int (*init_vm)(struct kvm *kvm);
292 void (*destroy_vm)(struct kvm *kvm);
293 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
294 int (*emulate_op)(struct kvm_vcpu *vcpu,
295 unsigned int inst, int *advance);
296 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
297 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
298 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
299 int (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
300 unsigned long arg);
301 int (*hcall_implemented)(unsigned long hcall);
302 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *,
303 struct irq_bypass_producer *);
304 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *,
305 struct irq_bypass_producer *);
306 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg);
307 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
308 int (*set_smt_mode)(struct kvm *kvm, unsigned long mode,
309 unsigned long flags);
310 void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr);
311 int (*enable_nested)(struct kvm *kvm);
312 int (*load_from_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
313 int size);
314 int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
315 int size);
316 int (*enable_svm)(struct kvm *kvm);
317 int (*svm_off)(struct kvm *kvm);
318 int (*enable_dawr1)(struct kvm *kvm);
319 bool (*hash_v3_possible)(void);
320 int (*create_vm_debugfs)(struct kvm *kvm);
321 int (*create_vcpu_debugfs)(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry);
322 };
323
324 extern struct kvmppc_ops *kvmppc_hv_ops;
325 extern struct kvmppc_ops *kvmppc_pr_ops;
326
327 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
328 enum instruction_fetch_type type, ppc_inst_t *inst)
329 {
330 int ret = EMULATE_DONE;
331 u32 fetched_inst;
332
333 /* Load the instruction manually if it failed to do so in the
334 * exit path */
335 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
336 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
337
338 /* Write fetch_failed unswapped if the fetch failed */
339 if (ret != EMULATE_DONE) {
340 *inst = ppc_inst(KVM_INST_FETCH_FAILED);
341 return ret;
342 }
343
344 #ifdef CONFIG_PPC64
345 /* Is this a prefixed instruction? */
346 if ((vcpu->arch.last_inst >> 32) != 0) {
347 u32 prefix = vcpu->arch.last_inst >> 32;
348 u32 suffix = vcpu->arch.last_inst;
349 if (kvmppc_need_byteswap(vcpu)) {
350 prefix = swab32(prefix);
351 suffix = swab32(suffix);
352 }
353 *inst = ppc_inst_prefix(prefix, suffix);
354 return EMULATE_DONE;
355 }
356 #endif
357
358 fetched_inst = kvmppc_need_byteswap(vcpu) ?
359 swab32(vcpu->arch.last_inst) :
360 vcpu->arch.last_inst;
361 *inst = ppc_inst(fetched_inst);
362 return EMULATE_DONE;
363 }
364
365 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
366 {
367 return kvm->arch.kvm_ops == kvmppc_hv_ops;
368 }
369
370 extern int kvmppc_hwrng_present(void);
371
372 /*
373 * Cuts out inst bits with ordering according to spec.
374 * That means the leftmost bit is zero. All given bits are included.
375 */
376 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
377 {
378 u32 r;
379 u32 mask;
380
381 BUG_ON(msb > lsb);
382
383 mask = (1 << (lsb - msb + 1)) - 1;
384 r = (inst >> (63 - lsb)) & mask;
385
386 return r;
387 }
388
389 /*
390 * Replaces inst bits with ordering according to spec.
391 */
392 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
393 {
394 u32 r;
395 u32 mask;
396
397 BUG_ON(msb > lsb);
398
399 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
400 r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
401
402 return r;
403 }
404
405 #define one_reg_size(id) \
406 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
407
408 #define get_reg_val(id, reg) ({ \
409 union kvmppc_one_reg __u; \
410 switch (one_reg_size(id)) { \
411 case 4: __u.wval = (reg); break; \
412 case 8: __u.dval = (reg); break; \
413 default: BUG(); \
414 } \
415 __u; \
416 })
417
418
419 #define set_reg_val(id, val) ({ \
420 u64 __v; \
421 switch (one_reg_size(id)) { \
422 case 4: __v = (val).wval; break; \
423 case 8: __v = (val).dval; break; \
424 default: BUG(); \
425 } \
426 __v; \
427 })
428
429 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
430 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
431
432 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
433 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
434
435 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
436 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
437 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
438 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
439
440 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
441
442 struct openpic;
443
444 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
445 extern void kvm_cma_reserve(void) __init;
446 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
447 {
448 paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr;
449 }
450
451 static inline void kvmppc_set_xive_tima(int cpu,
452 unsigned long phys_addr,
453 void __iomem *virt_addr)
454 {
455 paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr;
456 paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr;
457 }
458
459 static inline u32 kvmppc_get_xics_latch(void)
460 {
461 u32 xirr;
462
463 xirr = get_paca()->kvm_hstate.saved_xirr;
464 get_paca()->kvm_hstate.saved_xirr = 0;
465 return xirr;
466 }
467
468 /*
469 * To avoid the need to unnecessarily exit fully to the host kernel, an IPI to
470 * a CPU thread that's running/napping inside of a guest is by default regarded
471 * as a request to wake the CPU (if needed) and continue execution within the
472 * guest, potentially to process new state like externally-generated
473 * interrupts or IPIs sent from within the guest itself (e.g. H_PROD/H_IPI).
474 *
475 * To force an exit to the host kernel, kvmppc_set_host_ipi() must be called
476 * prior to issuing the IPI to set the corresponding 'host_ipi' flag in the
477 * target CPU's PACA. To avoid unnecessary exits to the host, this flag should
478 * be immediately cleared via kvmppc_clear_host_ipi() by the IPI handler on
479 * the receiving side prior to processing the IPI work.
480 *
481 * NOTE:
482 *
483 * We currently issue an smp_mb() at the beginning of kvmppc_set_host_ipi().
484 * This is to guard against sequences such as the following:
485 *
486 * CPU
487 * X: smp_muxed_ipi_set_message():
488 * X: smp_mb()
489 * X: message[RESCHEDULE] = 1
490 * X: doorbell_global_ipi(42):
491 * X: kvmppc_set_host_ipi(42)
492 * X: ppc_msgsnd_sync()/smp_mb()
493 * X: ppc_msgsnd() -> 42
494 * 42: doorbell_exception(): // from CPU X
495 * 42: ppc_msgsync()
496 * 105: smp_muxed_ipi_set_message():
497 * 105: smb_mb()
498 * // STORE DEFERRED DUE TO RE-ORDERING
499 * --105: message[CALL_FUNCTION] = 1
500 * | 105: doorbell_global_ipi(42):
501 * | 105: kvmppc_set_host_ipi(42)
502 * | 42: kvmppc_clear_host_ipi(42)
503 * | 42: smp_ipi_demux_relaxed()
504 * | 42: // returns to executing guest
505 * | // RE-ORDERED STORE COMPLETES
506 * ->105: message[CALL_FUNCTION] = 1
507 * 105: ppc_msgsnd_sync()/smp_mb()
508 * 105: ppc_msgsnd() -> 42
509 * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored
510 * 105: // hangs waiting on 42 to process messages/call_single_queue
511 *
512 * We also issue an smp_mb() at the end of kvmppc_clear_host_ipi(). This is
513 * to guard against sequences such as the following (as well as to create
514 * a read-side pairing with the barrier in kvmppc_set_host_ipi()):
515 *
516 * CPU
517 * X: smp_muxed_ipi_set_message():
518 * X: smp_mb()
519 * X: message[RESCHEDULE] = 1
520 * X: doorbell_global_ipi(42):
521 * X: kvmppc_set_host_ipi(42)
522 * X: ppc_msgsnd_sync()/smp_mb()
523 * X: ppc_msgsnd() -> 42
524 * 42: doorbell_exception(): // from CPU X
525 * 42: ppc_msgsync()
526 * // STORE DEFERRED DUE TO RE-ORDERING
527 * -- 42: kvmppc_clear_host_ipi(42)
528 * | 42: smp_ipi_demux_relaxed()
529 * | 105: smp_muxed_ipi_set_message():
530 * | 105: smb_mb()
531 * | 105: message[CALL_FUNCTION] = 1
532 * | 105: doorbell_global_ipi(42):
533 * | 105: kvmppc_set_host_ipi(42)
534 * | // RE-ORDERED STORE COMPLETES
535 * -> 42: kvmppc_clear_host_ipi(42)
536 * 42: // returns to executing guest
537 * 105: ppc_msgsnd_sync()/smp_mb()
538 * 105: ppc_msgsnd() -> 42
539 * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored
540 * 105: // hangs waiting on 42 to process messages/call_single_queue
541 */
542 static inline void kvmppc_set_host_ipi(int cpu)
543 {
544 /*
545 * order stores of IPI messages vs. setting of host_ipi flag
546 *
547 * pairs with the barrier in kvmppc_clear_host_ipi()
548 */
549 smp_mb();
550 WRITE_ONCE(paca_ptrs[cpu]->kvm_hstate.host_ipi, 1);
551 }
552
553 static inline void kvmppc_clear_host_ipi(int cpu)
554 {
555 WRITE_ONCE(paca_ptrs[cpu]->kvm_hstate.host_ipi, 0);
556 /*
557 * order clearing of host_ipi flag vs. processing of IPI messages
558 *
559 * pairs with the barrier in kvmppc_set_host_ipi()
560 */
561 smp_mb();
562 }
563
564 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
565 {
566 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
567 }
568
569 extern void kvm_hv_vm_activated(void);
570 extern void kvm_hv_vm_deactivated(void);
571 extern bool kvm_hv_mode_active(void);
572
573 extern void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu);
574
575 #else
576 static inline void __init kvm_cma_reserve(void)
577 {}
578
579 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
580 {}
581
582 static inline void kvmppc_set_xive_tima(int cpu,
583 unsigned long phys_addr,
584 void __iomem *virt_addr)
585 {}
586
587 static inline u32 kvmppc_get_xics_latch(void)
588 {
589 return 0;
590 }
591
592 static inline void kvmppc_set_host_ipi(int cpu)
593 {}
594
595 static inline void kvmppc_clear_host_ipi(int cpu)
596 {}
597
598 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
599 {
600 kvm_vcpu_kick(vcpu);
601 }
602
603 static inline bool kvm_hv_mode_active(void) { return false; }
604
605 #endif
606
607 #ifdef CONFIG_PPC_PSERIES
608 static inline bool kvmhv_on_pseries(void)
609 {
610 return !cpu_has_feature(CPU_FTR_HVMODE);
611 }
612 #else
613 static inline bool kvmhv_on_pseries(void)
614 {
615 return false;
616 }
617
618 #endif
619
620 #ifndef CONFIG_PPC_BOOK3S
621
622 static inline bool kvmhv_is_nestedv2(void)
623 {
624 return false;
625 }
626
627 static inline bool kvmhv_is_nestedv1(void)
628 {
629 return false;
630 }
631
632 static inline int kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu *vcpu,
633 struct pt_regs *regs)
634 {
635 return 0;
636 }
637 static inline int kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu *vcpu,
638 struct pt_regs *regs)
639 {
640 return 0;
641 }
642
643 static inline int kvmhv_nestedv2_mark_dirty(struct kvm_vcpu *vcpu, u16 iden)
644 {
645 return 0;
646 }
647
648 static inline int kvmhv_nestedv2_cached_reload(struct kvm_vcpu *vcpu, u16 iden)
649 {
650 return 0;
651 }
652
653 #endif
654
655 #ifdef CONFIG_KVM_XICS
656 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
657 {
658 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
659 }
660
661 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
662 struct kvm *kvm)
663 {
664 if (kvm && kvm_irq_bypass)
665 return kvm->arch.pimap;
666 return NULL;
667 }
668
669 extern void kvmppc_alloc_host_rm_ops(void);
670 extern void kvmppc_free_host_rm_ops(void);
671 extern void kvmppc_free_pimap(struct kvm *kvm);
672 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall);
673 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
674 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
675 extern int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req);
676 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
677 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
678 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
679 struct kvm_vcpu *vcpu, u32 cpu);
680 extern void kvmppc_xics_ipi_action(void);
681 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq,
682 unsigned long host_irq);
683 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
684 unsigned long host_irq);
685 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr,
686 struct kvmppc_irq_map *irq_map,
687 struct kvmppc_passthru_irqmap *pimap,
688 bool *again);
689
690 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
691 int level, bool line_status);
692
693 extern int h_ipi_redirect;
694 #else
695 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
696 struct kvm *kvm)
697 { return NULL; }
698 static inline void kvmppc_alloc_host_rm_ops(void) {}
699 static inline void kvmppc_free_host_rm_ops(void) {}
700 static inline void kvmppc_free_pimap(struct kvm *kvm) {}
701 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall)
702 { return 0; }
703 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
704 { return 0; }
705 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
706 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
707 { return 0; }
708 static inline int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req)
709 { return 0; }
710 #endif
711
712 #ifdef CONFIG_KVM_XIVE
713 /*
714 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine"
715 * ie. P9 new interrupt controller, while the second "xive" is the legacy
716 * "eXternal Interrupt Vector Entry" which is the configuration of an
717 * interrupt on the "xics" interrupt controller on P8 and earlier. Those
718 * two function consume or produce a legacy "XIVE" state from the
719 * new "XIVE" interrupt controller.
720 */
721 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
722 u32 priority);
723 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
724 u32 *priority);
725 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq);
726 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq);
727
728 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
729 struct kvm_vcpu *vcpu, u32 cpu);
730 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu);
731 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
732 unsigned long host_irq);
733 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
734 unsigned long host_irq);
735 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu);
736 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
737
738 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
739 int level, bool line_status);
740 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu);
741 extern void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu);
742 extern bool kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu);
743
744 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu)
745 {
746 return vcpu->arch.irq_type == KVMPPC_IRQ_XIVE;
747 }
748
749 extern int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev,
750 struct kvm_vcpu *vcpu, u32 cpu);
751 extern void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu);
752 extern int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu,
753 union kvmppc_one_reg *val);
754 extern int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu,
755 union kvmppc_one_reg *val);
756 extern bool kvmppc_xive_native_supported(void);
757
758 #else
759 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
760 u32 priority) { return -1; }
761 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
762 u32 *priority) { return -1; }
763 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; }
764 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; }
765
766 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
767 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
768 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
769 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
770 struct irq_desc *host_desc) { return -ENODEV; }
771 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
772 struct irq_desc *host_desc) { return -ENODEV; }
773 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; }
774 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; }
775
776 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
777 int level, bool line_status) { return -ENODEV; }
778 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { }
779 static inline void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu) { }
780 static inline bool kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu) { return true; }
781
782 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu)
783 { return 0; }
784 static inline int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev,
785 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
786 static inline void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
787 static inline int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu,
788 union kvmppc_one_reg *val)
789 { return 0; }
790 static inline int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu,
791 union kvmppc_one_reg *val)
792 { return -ENOENT; }
793
794 #endif /* CONFIG_KVM_XIVE */
795
796 #if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER)
797 static inline bool xics_on_xive(void)
798 {
799 return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE);
800 }
801 #else
802 static inline bool xics_on_xive(void)
803 {
804 return false;
805 }
806 #endif
807
808 /*
809 * Prototypes for functions called only from assembler code.
810 * Having prototypes reduces sparse errors.
811 */
812 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
813 unsigned long ioba, unsigned long tce);
814 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
815 unsigned long liobn, unsigned long ioba,
816 unsigned long tce_list, unsigned long npages);
817 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
818 unsigned long liobn, unsigned long ioba,
819 unsigned long tce_value, unsigned long npages);
820 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target,
821 unsigned int yield_count);
822 long kvmppc_rm_h_random(struct kvm_vcpu *vcpu);
823 void kvmhv_commence_exit(int trap);
824 void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu);
825 void kvmppc_subcore_enter_guest(void);
826 void kvmppc_subcore_exit_guest(void);
827 long kvmppc_realmode_hmi_handler(void);
828 long kvmppc_p9_realmode_hmi_handler(struct kvm_vcpu *vcpu);
829 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
830 long pte_index, unsigned long pteh, unsigned long ptel);
831 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
832 unsigned long pte_index, unsigned long avpn);
833 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu);
834 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
835 unsigned long pte_index, unsigned long avpn);
836 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
837 unsigned long pte_index);
838 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
839 unsigned long pte_index);
840 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
841 unsigned long pte_index);
842 long kvmppc_rm_h_page_init(struct kvm_vcpu *vcpu, unsigned long flags,
843 unsigned long dest, unsigned long src);
844 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr,
845 unsigned long slb_v, unsigned int status, bool data);
846 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu);
847
848 /*
849 * Host-side operations we want to set up while running in real
850 * mode in the guest operating on the xics.
851 * Currently only VCPU wakeup is supported.
852 */
853
854 union kvmppc_rm_state {
855 unsigned long raw;
856 struct {
857 u32 in_host;
858 u32 rm_action;
859 };
860 };
861
862 struct kvmppc_host_rm_core {
863 union kvmppc_rm_state rm_state;
864 void *rm_data;
865 char pad[112];
866 };
867
868 struct kvmppc_host_rm_ops {
869 struct kvmppc_host_rm_core *rm_core;
870 void (*vcpu_kick)(struct kvm_vcpu *vcpu);
871 };
872
873 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv;
874
875 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
876 {
877 #ifdef CONFIG_KVM_BOOKE_HV
878 return mfspr(SPRN_GEPR);
879 #elif defined(CONFIG_BOOKE)
880 return vcpu->arch.epr;
881 #else
882 return 0;
883 #endif
884 }
885
886 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
887 {
888 #ifdef CONFIG_KVM_BOOKE_HV
889 mtspr(SPRN_GEPR, epr);
890 #elif defined(CONFIG_BOOKE)
891 vcpu->arch.epr = epr;
892 #endif
893 }
894
895 #ifdef CONFIG_KVM_MPIC
896
897 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
898 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
899 u32 cpu);
900 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
901
902 #else
903
904 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
905 {
906 }
907
908 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
909 struct kvm_vcpu *vcpu, u32 cpu)
910 {
911 return -EINVAL;
912 }
913
914 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
915 struct kvm_vcpu *vcpu)
916 {
917 }
918
919 #endif /* CONFIG_KVM_MPIC */
920
921 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
922 struct kvm_config_tlb *cfg);
923 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
924 struct kvm_dirty_tlb *cfg);
925
926 long kvmppc_alloc_lpid(void);
927 void kvmppc_free_lpid(long lpid);
928 void kvmppc_init_lpid(unsigned long nr_lpids);
929
930 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn)
931 {
932 struct folio *folio;
933 /*
934 * We can only access pages that the kernel maps
935 * as memory. Bail out for unmapped ones.
936 */
937 if (!pfn_valid(pfn))
938 return;
939
940 /* Clear i-cache for new pages */
941 folio = page_folio(pfn_to_page(pfn));
942 if (!test_bit(PG_dcache_clean, &folio->flags)) {
943 flush_dcache_icache_folio(folio);
944 set_bit(PG_dcache_clean, &folio->flags);
945 }
946 }
947
948 /*
949 * Shared struct helpers. The shared struct can be little or big endian,
950 * depending on the guest endianness. So expose helpers to all of them.
951 */
952 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
953 {
954 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
955 /* Only Book3S_64 PR supports bi-endian for now */
956 return vcpu->arch.shared_big_endian;
957 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
958 /* Book3s_64 HV on little endian is always little endian */
959 return false;
960 #else
961 return true;
962 #endif
963 }
964
965 #define KVMPPC_BOOKE_HV_SPRNG_ACCESSOR_GET(reg, bookehv_spr) \
966 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
967 { \
968 return mfspr(bookehv_spr); \
969 } \
970
971 #define KVMPPC_BOOKE_HV_SPRNG_ACCESSOR_SET(reg, bookehv_spr) \
972 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \
973 { \
974 mtspr(bookehv_spr, val); \
975 } \
976
977 #define KVMPPC_VCPU_SHARED_REGS_ACCESSOR_GET(reg, size, iden) \
978 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
979 { \
980 if (iden) \
981 WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden) < 0); \
982 if (kvmppc_shared_big_endian(vcpu)) \
983 return be##size##_to_cpu((__be##size __force)vcpu->arch.shared->reg); \
984 else \
985 return le##size##_to_cpu((__le##size __force)vcpu->arch.shared->reg); \
986 } \
987
988 #define KVMPPC_VCPU_SHARED_REGS_ACCESSOR_SET(reg, size, iden) \
989 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
990 { \
991 if (kvmppc_shared_big_endian(vcpu)) \
992 vcpu->arch.shared->reg = (u##size __force)cpu_to_be##size(val); \
993 else \
994 vcpu->arch.shared->reg = (u##size __force)cpu_to_le##size(val); \
995 \
996 if (iden) \
997 kvmhv_nestedv2_mark_dirty(vcpu, iden); \
998 } \
999
1000 #define KVMPPC_VCPU_SHARED_REGS_ACCESSOR(reg, size, iden) \
1001 KVMPPC_VCPU_SHARED_REGS_ACCESSOR_GET(reg, size, iden) \
1002 KVMPPC_VCPU_SHARED_REGS_ACCESSOR_SET(reg, size, iden) \
1003
1004 #define KVMPPC_BOOKE_HV_SPRNG_ACCESSOR(reg, bookehv_spr) \
1005 KVMPPC_BOOKE_HV_SPRNG_ACCESSOR_GET(reg, bookehv_spr) \
1006 KVMPPC_BOOKE_HV_SPRNG_ACCESSOR_SET(reg, bookehv_spr) \
1007
1008 #ifdef CONFIG_KVM_BOOKE_HV
1009
1010 #define KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(reg, size, bookehv_spr, iden) \
1011 KVMPPC_BOOKE_HV_SPRNG_ACCESSOR(reg, bookehv_spr) \
1012
1013 #else
1014
1015 #define KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(reg, size, bookehv_spr, iden) \
1016 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(reg, size, iden) \
1017
1018 #endif
1019
1020 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(critical, 64, 0)
1021 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(sprg0, 64, SPRN_GSPRG0, KVMPPC_GSID_SPRG0)
1022 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(sprg1, 64, SPRN_GSPRG1, KVMPPC_GSID_SPRG1)
1023 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(sprg2, 64, SPRN_GSPRG2, KVMPPC_GSID_SPRG2)
1024 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(sprg3, 64, SPRN_GSPRG3, KVMPPC_GSID_SPRG3)
1025 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(srr0, 64, SPRN_GSRR0, KVMPPC_GSID_SRR0)
1026 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(srr1, 64, SPRN_GSRR1, KVMPPC_GSID_SRR1)
1027 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(dar, 64, SPRN_GDEAR, KVMPPC_GSID_DAR)
1028 KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(esr, 64, SPRN_GESR, 0)
1029 KVMPPC_VCPU_SHARED_REGS_ACCESSOR_GET(msr, 64, KVMPPC_GSID_MSR)
1030 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
1031 {
1032 if (kvmppc_shared_big_endian(vcpu))
1033 vcpu->arch.shared->msr = cpu_to_be64(val);
1034 else
1035 vcpu->arch.shared->msr = cpu_to_le64(val);
1036 kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_MSR);
1037 }
1038 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(dsisr, 32, KVMPPC_GSID_DSISR)
1039 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(int_pending, 32, 0)
1040 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(sprg4, 64, 0)
1041 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(sprg5, 64, 0)
1042 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(sprg6, 64, 0)
1043 KVMPPC_VCPU_SHARED_REGS_ACCESSOR(sprg7, 64, 0)
1044
1045 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
1046 {
1047 if (kvmppc_shared_big_endian(vcpu))
1048 return be32_to_cpu(vcpu->arch.shared->sr[nr]);
1049 else
1050 return le32_to_cpu(vcpu->arch.shared->sr[nr]);
1051 }
1052
1053 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
1054 {
1055 if (kvmppc_shared_big_endian(vcpu))
1056 vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
1057 else
1058 vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
1059 }
1060
1061 /*
1062 * Please call after prepare_to_enter. This function puts the lazy ee and irq
1063 * disabled tracking state back to normal mode, without actually enabling
1064 * interrupts.
1065 */
1066 static inline void kvmppc_fix_ee_before_entry(void)
1067 {
1068 trace_hardirqs_on();
1069
1070 #ifdef CONFIG_PPC64
1071 /*
1072 * To avoid races, the caller must have gone directly from having
1073 * interrupts fully-enabled to hard-disabled.
1074 */
1075 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
1076
1077 /* Only need to enable IRQs by hard enabling them after this */
1078 local_paca->irq_happened = 0;
1079 irq_soft_mask_set(IRQS_ENABLED);
1080 #endif
1081 }
1082
1083 static inline void kvmppc_fix_ee_after_exit(void)
1084 {
1085 #ifdef CONFIG_PPC64
1086 /* Only need to enable IRQs by hard enabling them after this */
1087 local_paca->irq_happened = PACA_IRQ_HARD_DIS;
1088 irq_soft_mask_set(IRQS_ALL_DISABLED);
1089 #endif
1090
1091 trace_hardirqs_off();
1092 }
1093
1094
1095 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
1096 {
1097 ulong ea;
1098 ulong msr_64bit = 0;
1099
1100 ea = kvmppc_get_gpr(vcpu, rb);
1101 if (ra)
1102 ea += kvmppc_get_gpr(vcpu, ra);
1103
1104 #if defined(CONFIG_PPC_BOOK3E_64)
1105 msr_64bit = MSR_CM;
1106 #elif defined(CONFIG_PPC_BOOK3S_64)
1107 msr_64bit = MSR_SF;
1108 #endif
1109
1110 if (!(kvmppc_get_msr(vcpu) & msr_64bit))
1111 ea = (uint32_t)ea;
1112
1113 return ea;
1114 }
1115
1116 extern void xics_wake_cpu(int cpu);
1117
1118 #endif /* __POWERPC_KVM_PPC_H__ */
1119
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