1 /* SPDX-License-Identifier: GPL-2.0-only */
4 * Copyright IBM Corp. 2008
6 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
9 #ifndef __POWERPC_KVM_PPC_H__
10 #define __POWERPC_KVM_PPC_H__
12 /* This file exists just so we can dereference kvm_vcpu, avoiding nested header
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>
24 #include <asm/kvm_booke.h>
26 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
29 #include <asm/cpu_has_feature.h>
33 * KVMPPC_INST_SW_BREAKPOINT is debug Instruction
34 * for supporting software breakpoint.
36 #define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00
38 enum emulation_result {
39 EMULATE_DONE, /* no further processing */
40 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
41 EMULATE_FAIL, /* can't emulate this instruction */
42 EMULATE_AGAIN, /* something went wrong. go again */
43 EMULATE_EXIT_USER, /* emulation requires exit to user-space */
46 enum instruction_fetch_type {
48 INST_SC, /* system call */
52 XLATE_INST, /* translate instruction address */
53 XLATE_DATA /* translate data address */
56 enum xlate_readwrite {
57 XLATE_READ, /* check for read permissions */
58 XLATE_WRITE /* check for write permissions */
61 extern int kvmppc_vcpu_run(struct kvm_vcpu *vcpu);
62 extern int __kvmppc_vcpu_run(struct kvm_vcpu *vcpu);
63 extern void kvmppc_handler_highmem(void);
65 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
66 extern int kvmppc_handle_load(struct kvm_vcpu *vcpu,
67 unsigned int rt, unsigned int bytes,
68 int is_default_endian);
69 extern int kvmppc_handle_loads(struct kvm_vcpu *vcpu,
70 unsigned int rt, unsigned int bytes,
71 int is_default_endian);
72 extern int kvmppc_handle_vsx_load(struct kvm_vcpu *vcpu,
73 unsigned int rt, unsigned int bytes,
74 int is_default_endian, int mmio_sign_extend);
75 extern int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu,
76 unsigned int rt, unsigned int bytes, int is_default_endian);
77 extern int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu,
78 unsigned int rs, unsigned int bytes, int is_default_endian);
79 extern int kvmppc_handle_store(struct kvm_vcpu *vcpu,
80 u64 val, unsigned int bytes,
81 int is_default_endian);
82 extern int kvmppc_handle_vsx_store(struct kvm_vcpu *vcpu,
83 int rs, unsigned int bytes,
84 int is_default_endian);
86 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
87 enum instruction_fetch_type type, u32 *inst);
89 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
91 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
93 extern int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu);
94 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
95 extern int kvmppc_emulate_mmio(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);
103 /* Core-specific hooks */
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 int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
110 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
111 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
113 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
114 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
115 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
116 enum xlate_instdata xlid, enum xlate_readwrite xlrw,
117 struct kvmppc_pte *pte);
119 extern int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu);
120 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
121 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
122 extern int kvmppc_core_check_processor_compat(void);
123 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
124 struct kvm_translation *tr);
126 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
127 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
129 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
130 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
131 extern void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong flags);
132 extern void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu);
133 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
134 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu);
135 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu);
136 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu);
137 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
138 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
139 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
140 struct kvm_interrupt *irq);
141 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
142 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags,
144 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
147 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu);
148 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
150 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
151 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
153 extern int kvmppc_booke_init(void);
154 extern void kvmppc_booke_exit(void);
156 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
157 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
158 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
160 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order);
161 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info);
162 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order);
163 extern void kvmppc_free_hpt(struct kvm_hpt_info *info);
164 extern void kvmppc_rmap_reset(struct kvm *kvm);
165 extern long kvmppc_prepare_vrma(struct kvm *kvm,
166 struct kvm_userspace_memory_region *mem);
167 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
168 struct kvm_memory_slot *memslot, unsigned long porder);
169 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
170 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
171 struct iommu_group *grp);
172 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
173 struct iommu_group *grp);
174 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm);
175 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm);
176 extern void kvmppc_setup_partition_table(struct kvm *kvm);
178 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
179 struct kvm_create_spapr_tce_64 *args);
180 extern struct kvmppc_spapr_tce_table *kvmppc_find_table(
181 struct kvm *kvm, unsigned long liobn);
182 #define kvmppc_ioba_validate(stt, ioba, npages) \
183 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \
184 (stt)->size, (ioba), (npages)) ? \
185 H_PARAMETER : H_SUCCESS)
186 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
187 unsigned long ioba, unsigned long tce);
188 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
189 unsigned long liobn, unsigned long ioba,
190 unsigned long tce_list, unsigned long npages);
191 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
192 unsigned long liobn, unsigned long ioba,
193 unsigned long tce_value, unsigned long npages);
194 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
196 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages);
197 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages);
198 extern int kvmppc_core_init_vm(struct kvm *kvm);
199 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
200 extern void kvmppc_core_free_memslot(struct kvm *kvm,
201 struct kvm_memory_slot *slot);
202 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
203 const struct kvm_memory_slot *old,
204 struct kvm_memory_slot *new,
205 enum kvm_mr_change change);
206 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
207 struct kvm_memory_slot *old,
208 const struct kvm_memory_slot *new,
209 enum kvm_mr_change change);
210 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
211 struct kvm_ppc_smmu_info *info);
212 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
213 struct kvm_memory_slot *memslot);
215 extern int kvmppc_bookehv_init(void);
216 extern void kvmppc_bookehv_exit(void);
218 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
220 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
221 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm,
222 struct kvm_ppc_resize_hpt *rhpt);
223 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm,
224 struct kvm_ppc_resize_hpt *rhpt);
226 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
228 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
229 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
230 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
232 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
234 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
236 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
237 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
239 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
240 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
242 union kvmppc_one_reg {
258 struct module *owner;
259 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
260 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
261 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
262 union kvmppc_one_reg *val);
263 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
264 union kvmppc_one_reg *val);
265 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
266 void (*vcpu_put)(struct kvm_vcpu *vcpu);
267 void (*inject_interrupt)(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags);
268 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
269 int (*vcpu_run)(struct kvm_vcpu *vcpu);
270 int (*vcpu_create)(struct kvm_vcpu *vcpu);
271 void (*vcpu_free)(struct kvm_vcpu *vcpu);
272 int (*check_requests)(struct kvm_vcpu *vcpu);
273 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
274 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
275 int (*prepare_memory_region)(struct kvm *kvm,
276 const struct kvm_memory_slot *old,
277 struct kvm_memory_slot *new,
278 enum kvm_mr_change change);
279 void (*commit_memory_region)(struct kvm *kvm,
280 struct kvm_memory_slot *old,
281 const struct kvm_memory_slot *new,
282 enum kvm_mr_change change);
283 bool (*unmap_gfn_range)(struct kvm *kvm, struct kvm_gfn_range *range);
284 bool (*age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range);
285 bool (*test_age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range);
286 bool (*set_spte_gfn)(struct kvm *kvm, struct kvm_gfn_range *range);
287 void (*free_memslot)(struct kvm_memory_slot *slot);
288 int (*init_vm)(struct kvm *kvm);
289 void (*destroy_vm)(struct kvm *kvm);
290 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
291 int (*emulate_op)(struct kvm_vcpu *vcpu,
292 unsigned int inst, int *advance);
293 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
294 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
295 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
296 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
298 int (*hcall_implemented)(unsigned long hcall);
299 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *,
300 struct irq_bypass_producer *);
301 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *,
302 struct irq_bypass_producer *);
303 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg);
304 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
305 int (*set_smt_mode)(struct kvm *kvm, unsigned long mode,
306 unsigned long flags);
307 void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr);
308 int (*enable_nested)(struct kvm *kvm);
309 int (*load_from_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
311 int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
313 int (*enable_svm)(struct kvm *kvm);
314 int (*svm_off)(struct kvm *kvm);
315 int (*enable_dawr1)(struct kvm *kvm);
316 bool (*hash_v3_possible)(void);
317 int (*create_vm_debugfs)(struct kvm *kvm);
318 int (*create_vcpu_debugfs)(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry);
321 extern struct kvmppc_ops *kvmppc_hv_ops;
322 extern struct kvmppc_ops *kvmppc_pr_ops;
324 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
325 enum instruction_fetch_type type, u32 *inst)
327 int ret = EMULATE_DONE;
330 /* Load the instruction manually if it failed to do so in the
332 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
333 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
335 /* Write fetch_failed unswapped if the fetch failed */
336 if (ret == EMULATE_DONE)
337 fetched_inst = kvmppc_need_byteswap(vcpu) ?
338 swab32(vcpu->arch.last_inst) :
339 vcpu->arch.last_inst;
341 fetched_inst = vcpu->arch.last_inst;
343 *inst = fetched_inst;
347 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
349 return kvm->arch.kvm_ops == kvmppc_hv_ops;
352 extern int kvmppc_hwrng_present(void);
355 * Cuts out inst bits with ordering according to spec.
356 * That means the leftmost bit is zero. All given bits are included.
358 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
365 mask = (1 << (lsb - msb + 1)) - 1;
366 r = (inst >> (63 - lsb)) & mask;
372 * Replaces inst bits with ordering according to spec.
374 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
381 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
382 r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
387 #define one_reg_size(id) \
388 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
390 #define get_reg_val(id, reg) ({ \
391 union kvmppc_one_reg __u; \
392 switch (one_reg_size(id)) { \
393 case 4: __u.wval = (reg); break; \
394 case 8: __u.dval = (reg); break; \
401 #define set_reg_val(id, val) ({ \
403 switch (one_reg_size(id)) { \
404 case 4: __v = (val).wval; break; \
405 case 8: __v = (val).dval; break; \
411 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
412 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
414 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
415 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
417 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
418 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
419 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
420 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
422 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
426 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
427 extern void kvm_cma_reserve(void) __init;
428 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
430 paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr;
433 static inline void kvmppc_set_xive_tima(int cpu,
434 unsigned long phys_addr,
435 void __iomem *virt_addr)
437 paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr;
438 paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr;
441 static inline u32 kvmppc_get_xics_latch(void)
445 xirr = get_paca()->kvm_hstate.saved_xirr;
446 get_paca()->kvm_hstate.saved_xirr = 0;
451 * To avoid the need to unnecessarily exit fully to the host kernel, an IPI to
452 * a CPU thread that's running/napping inside of a guest is by default regarded
453 * as a request to wake the CPU (if needed) and continue execution within the
454 * guest, potentially to process new state like externally-generated
455 * interrupts or IPIs sent from within the guest itself (e.g. H_PROD/H_IPI).
457 * To force an exit to the host kernel, kvmppc_set_host_ipi() must be called
458 * prior to issuing the IPI to set the corresponding 'host_ipi' flag in the
459 * target CPU's PACA. To avoid unnecessary exits to the host, this flag should
460 * be immediately cleared via kvmppc_clear_host_ipi() by the IPI handler on
461 * the receiving side prior to processing the IPI work.
465 * We currently issue an smp_mb() at the beginning of kvmppc_set_host_ipi().
466 * This is to guard against sequences such as the following:
469 * X: smp_muxed_ipi_set_message():
471 * X: message[RESCHEDULE] = 1
472 * X: doorbell_global_ipi(42):
473 * X: kvmppc_set_host_ipi(42)
474 * X: ppc_msgsnd_sync()/smp_mb()
475 * X: ppc_msgsnd() -> 42
476 * 42: doorbell_exception(): // from CPU X
478 * 105: smp_muxed_ipi_set_message():
480 * // STORE DEFERRED DUE TO RE-ORDERING
481 * --105: message[CALL_FUNCTION] = 1
482 * | 105: doorbell_global_ipi(42):
483 * | 105: kvmppc_set_host_ipi(42)
484 * | 42: kvmppc_clear_host_ipi(42)
485 * | 42: smp_ipi_demux_relaxed()
486 * | 42: // returns to executing guest
487 * | // RE-ORDERED STORE COMPLETES
488 * ->105: message[CALL_FUNCTION] = 1
489 * 105: ppc_msgsnd_sync()/smp_mb()
490 * 105: ppc_msgsnd() -> 42
491 * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored
492 * 105: // hangs waiting on 42 to process messages/call_single_queue
494 * We also issue an smp_mb() at the end of kvmppc_clear_host_ipi(). This is
495 * to guard against sequences such as the following (as well as to create
496 * a read-side pairing with the barrier in kvmppc_set_host_ipi()):
499 * X: smp_muxed_ipi_set_message():
501 * X: message[RESCHEDULE] = 1
502 * X: doorbell_global_ipi(42):
503 * X: kvmppc_set_host_ipi(42)
504 * X: ppc_msgsnd_sync()/smp_mb()
505 * X: ppc_msgsnd() -> 42
506 * 42: doorbell_exception(): // from CPU X
508 * // STORE DEFERRED DUE TO RE-ORDERING
509 * -- 42: kvmppc_clear_host_ipi(42)
510 * | 42: smp_ipi_demux_relaxed()
511 * | 105: smp_muxed_ipi_set_message():
513 * | 105: message[CALL_FUNCTION] = 1
514 * | 105: doorbell_global_ipi(42):
515 * | 105: kvmppc_set_host_ipi(42)
516 * | // RE-ORDERED STORE COMPLETES
517 * -> 42: kvmppc_clear_host_ipi(42)
518 * 42: // returns to executing guest
519 * 105: ppc_msgsnd_sync()/smp_mb()
520 * 105: ppc_msgsnd() -> 42
521 * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored
522 * 105: // hangs waiting on 42 to process messages/call_single_queue
524 static inline void kvmppc_set_host_ipi(int cpu)
527 * order stores of IPI messages vs. setting of host_ipi flag
529 * pairs with the barrier in kvmppc_clear_host_ipi()
532 paca_ptrs[cpu]->kvm_hstate.host_ipi = 1;
535 static inline void kvmppc_clear_host_ipi(int cpu)
537 paca_ptrs[cpu]->kvm_hstate.host_ipi = 0;
539 * order clearing of host_ipi flag vs. processing of IPI messages
541 * pairs with the barrier in kvmppc_set_host_ipi()
546 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
548 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
551 extern void kvm_hv_vm_activated(void);
552 extern void kvm_hv_vm_deactivated(void);
553 extern bool kvm_hv_mode_active(void);
555 extern void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu);
558 static inline void __init kvm_cma_reserve(void)
561 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
564 static inline void kvmppc_set_xive_tima(int cpu,
565 unsigned long phys_addr,
566 void __iomem *virt_addr)
569 static inline u32 kvmppc_get_xics_latch(void)
574 static inline void kvmppc_set_host_ipi(int cpu)
577 static inline void kvmppc_clear_host_ipi(int cpu)
580 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
585 static inline bool kvm_hv_mode_active(void) { return false; }
589 #ifdef CONFIG_PPC_PSERIES
590 static inline bool kvmhv_on_pseries(void)
592 return !cpu_has_feature(CPU_FTR_HVMODE);
595 static inline bool kvmhv_on_pseries(void)
601 #ifdef CONFIG_KVM_XICS
602 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
604 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
607 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
610 if (kvm && kvm_irq_bypass)
611 return kvm->arch.pimap;
615 extern void kvmppc_alloc_host_rm_ops(void);
616 extern void kvmppc_free_host_rm_ops(void);
617 extern void kvmppc_free_pimap(struct kvm *kvm);
618 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall);
619 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
620 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
621 extern int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req);
622 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
623 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
624 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
625 struct kvm_vcpu *vcpu, u32 cpu);
626 extern void kvmppc_xics_ipi_action(void);
627 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq,
628 unsigned long host_irq);
629 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
630 unsigned long host_irq);
631 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr,
632 struct kvmppc_irq_map *irq_map,
633 struct kvmppc_passthru_irqmap *pimap,
636 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
637 int level, bool line_status);
639 extern int h_ipi_redirect;
641 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
644 static inline void kvmppc_alloc_host_rm_ops(void) {}
645 static inline void kvmppc_free_host_rm_ops(void) {}
646 static inline void kvmppc_free_pimap(struct kvm *kvm) {}
647 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall)
649 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
651 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
652 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
654 static inline int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req)
658 #ifdef CONFIG_KVM_XIVE
660 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine"
661 * ie. P9 new interrupt controller, while the second "xive" is the legacy
662 * "eXternal Interrupt Vector Entry" which is the configuration of an
663 * interrupt on the "xics" interrupt controller on P8 and earlier. Those
664 * two function consume or produce a legacy "XIVE" state from the
665 * new "XIVE" interrupt controller.
667 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
669 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
671 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq);
672 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq);
674 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
675 struct kvm_vcpu *vcpu, u32 cpu);
676 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu);
677 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
678 unsigned long host_irq);
679 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
680 unsigned long host_irq);
681 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu);
682 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
684 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
685 int level, bool line_status);
686 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu);
687 extern void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu);
688 extern void kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu);
690 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu)
692 return vcpu->arch.irq_type == KVMPPC_IRQ_XIVE;
695 extern int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev,
696 struct kvm_vcpu *vcpu, u32 cpu);
697 extern void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu);
698 extern int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu,
699 union kvmppc_one_reg *val);
700 extern int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu,
701 union kvmppc_one_reg *val);
702 extern bool kvmppc_xive_native_supported(void);
705 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
706 u32 priority) { return -1; }
707 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
708 u32 *priority) { return -1; }
709 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; }
710 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; }
712 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
713 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
714 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
715 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
716 struct irq_desc *host_desc) { return -ENODEV; }
717 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
718 struct irq_desc *host_desc) { return -ENODEV; }
719 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; }
720 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; }
722 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
723 int level, bool line_status) { return -ENODEV; }
724 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { }
725 static inline void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu) { }
726 static inline void kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu) { }
728 static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu)
730 static inline int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev,
731 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
732 static inline void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
733 static inline int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu,
734 union kvmppc_one_reg *val)
736 static inline int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu,
737 union kvmppc_one_reg *val)
740 #endif /* CONFIG_KVM_XIVE */
742 #if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER)
743 static inline bool xics_on_xive(void)
745 return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE);
748 static inline bool xics_on_xive(void)
755 * Prototypes for functions called only from assembler code.
756 * Having prototypes reduces sparse errors.
758 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
759 unsigned long ioba, unsigned long tce);
760 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
761 unsigned long liobn, unsigned long ioba,
762 unsigned long tce_list, unsigned long npages);
763 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
764 unsigned long liobn, unsigned long ioba,
765 unsigned long tce_value, unsigned long npages);
766 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target,
767 unsigned int yield_count);
768 long kvmppc_rm_h_random(struct kvm_vcpu *vcpu);
769 void kvmhv_commence_exit(int trap);
770 void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu);
771 void kvmppc_subcore_enter_guest(void);
772 void kvmppc_subcore_exit_guest(void);
773 long kvmppc_realmode_hmi_handler(void);
774 long kvmppc_p9_realmode_hmi_handler(struct kvm_vcpu *vcpu);
775 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
776 long pte_index, unsigned long pteh, unsigned long ptel);
777 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
778 unsigned long pte_index, unsigned long avpn);
779 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu);
780 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
781 unsigned long pte_index, unsigned long avpn);
782 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
783 unsigned long pte_index);
784 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
785 unsigned long pte_index);
786 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
787 unsigned long pte_index);
788 long kvmppc_rm_h_page_init(struct kvm_vcpu *vcpu, unsigned long flags,
789 unsigned long dest, unsigned long src);
790 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr,
791 unsigned long slb_v, unsigned int status, bool data);
792 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu);
793 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu);
794 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server);
795 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server,
797 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr);
798 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr);
799 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu);
802 * Host-side operations we want to set up while running in real
803 * mode in the guest operating on the xics.
804 * Currently only VCPU wakeup is supported.
807 union kvmppc_rm_state {
815 struct kvmppc_host_rm_core {
816 union kvmppc_rm_state rm_state;
821 struct kvmppc_host_rm_ops {
822 struct kvmppc_host_rm_core *rm_core;
823 void (*vcpu_kick)(struct kvm_vcpu *vcpu);
826 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv;
828 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
830 #ifdef CONFIG_KVM_BOOKE_HV
831 return mfspr(SPRN_GEPR);
832 #elif defined(CONFIG_BOOKE)
833 return vcpu->arch.epr;
839 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
841 #ifdef CONFIG_KVM_BOOKE_HV
842 mtspr(SPRN_GEPR, epr);
843 #elif defined(CONFIG_BOOKE)
844 vcpu->arch.epr = epr;
848 #ifdef CONFIG_KVM_MPIC
850 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
851 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
853 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
857 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
861 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
862 struct kvm_vcpu *vcpu, u32 cpu)
867 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
868 struct kvm_vcpu *vcpu)
872 #endif /* CONFIG_KVM_MPIC */
874 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
875 struct kvm_config_tlb *cfg);
876 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
877 struct kvm_dirty_tlb *cfg);
879 long kvmppc_alloc_lpid(void);
880 void kvmppc_claim_lpid(long lpid);
881 void kvmppc_free_lpid(long lpid);
882 void kvmppc_init_lpid(unsigned long nr_lpids);
884 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn)
888 * We can only access pages that the kernel maps
889 * as memory. Bail out for unmapped ones.
894 /* Clear i-cache for new pages */
895 page = pfn_to_page(pfn);
896 if (!test_bit(PG_dcache_clean, &page->flags)) {
897 flush_dcache_icache_page(page);
898 set_bit(PG_dcache_clean, &page->flags);
903 * Shared struct helpers. The shared struct can be little or big endian,
904 * depending on the guest endianness. So expose helpers to all of them.
906 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
908 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
909 /* Only Book3S_64 PR supports bi-endian for now */
910 return vcpu->arch.shared_big_endian;
911 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
912 /* Book3s_64 HV on little endian is always little endian */
919 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \
920 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
922 return mfspr(bookehv_spr); \
925 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \
926 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \
928 mtspr(bookehv_spr, val); \
931 #define SHARED_WRAPPER_GET(reg, size) \
932 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
934 if (kvmppc_shared_big_endian(vcpu)) \
935 return be##size##_to_cpu(vcpu->arch.shared->reg); \
937 return le##size##_to_cpu(vcpu->arch.shared->reg); \
940 #define SHARED_WRAPPER_SET(reg, size) \
941 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
943 if (kvmppc_shared_big_endian(vcpu)) \
944 vcpu->arch.shared->reg = cpu_to_be##size(val); \
946 vcpu->arch.shared->reg = cpu_to_le##size(val); \
949 #define SHARED_WRAPPER(reg, size) \
950 SHARED_WRAPPER_GET(reg, size) \
951 SHARED_WRAPPER_SET(reg, size) \
953 #define SPRNG_WRAPPER(reg, bookehv_spr) \
954 SPRNG_WRAPPER_GET(reg, bookehv_spr) \
955 SPRNG_WRAPPER_SET(reg, bookehv_spr) \
957 #ifdef CONFIG_KVM_BOOKE_HV
959 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
960 SPRNG_WRAPPER(reg, bookehv_spr) \
964 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
965 SHARED_WRAPPER(reg, size) \
969 SHARED_WRAPPER(critical, 64)
970 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
971 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
972 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
973 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
974 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
975 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
976 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
977 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
978 SHARED_WRAPPER_GET(msr, 64)
979 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
981 if (kvmppc_shared_big_endian(vcpu))
982 vcpu->arch.shared->msr = cpu_to_be64(val);
984 vcpu->arch.shared->msr = cpu_to_le64(val);
986 SHARED_WRAPPER(dsisr, 32)
987 SHARED_WRAPPER(int_pending, 32)
988 SHARED_WRAPPER(sprg4, 64)
989 SHARED_WRAPPER(sprg5, 64)
990 SHARED_WRAPPER(sprg6, 64)
991 SHARED_WRAPPER(sprg7, 64)
993 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
995 if (kvmppc_shared_big_endian(vcpu))
996 return be32_to_cpu(vcpu->arch.shared->sr[nr]);
998 return le32_to_cpu(vcpu->arch.shared->sr[nr]);
1001 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
1003 if (kvmppc_shared_big_endian(vcpu))
1004 vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
1006 vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
1010 * Please call after prepare_to_enter. This function puts the lazy ee and irq
1011 * disabled tracking state back to normal mode, without actually enabling
1014 static inline void kvmppc_fix_ee_before_entry(void)
1016 trace_hardirqs_on();
1020 * To avoid races, the caller must have gone directly from having
1021 * interrupts fully-enabled to hard-disabled.
1023 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
1025 /* Only need to enable IRQs by hard enabling them after this */
1026 local_paca->irq_happened = 0;
1027 irq_soft_mask_set(IRQS_ENABLED);
1031 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
1034 ulong msr_64bit = 0;
1036 ea = kvmppc_get_gpr(vcpu, rb);
1038 ea += kvmppc_get_gpr(vcpu, ra);
1040 #if defined(CONFIG_PPC_BOOK3E_64)
1042 #elif defined(CONFIG_PPC_BOOK3S_64)
1046 if (!(kvmppc_get_msr(vcpu) & msr_64bit))
1052 extern void xics_wake_cpu(int cpu);
1054 #endif /* __POWERPC_KVM_PPC_H__ */