tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#include <asm/xive.h>
40#include <asm/cpu_has_feature.h>
41#endif
42
43/*
44 * KVMPPC_INST_SW_BREAKPOINT is debug Instruction
45 * for supporting software breakpoint.
46 */
47#define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00
48
49enum emulation_result {
50 EMULATE_DONE, /* no further processing */
51 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
52 EMULATE_FAIL, /* can't emulate this instruction */
53 EMULATE_AGAIN, /* something went wrong. go again */
54 EMULATE_EXIT_USER, /* emulation requires exit to user-space */
55};
56
57enum instruction_fetch_type {
58 INST_GENERIC,
59 INST_SC, /* system call */
60};
61
62enum xlate_instdata {
63 XLATE_INST, /* translate instruction address */
64 XLATE_DATA /* translate data address */
65};
66
67enum xlate_readwrite {
68 XLATE_READ, /* check for read permissions */
69 XLATE_WRITE /* check for write permissions */
70};
71
72extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
73extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
74extern void kvmppc_handler_highmem(void);
75
76extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
77extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
78 unsigned int rt, unsigned int bytes,
79 int is_default_endian);
80extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
81 unsigned int rt, unsigned int bytes,
82 int is_default_endian);
83extern int kvmppc_handle_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
84 unsigned int rt, unsigned int bytes,
85 int is_default_endian, int mmio_sign_extend);
86extern int kvmppc_handle_vmx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
87 unsigned int rt, unsigned int bytes, int is_default_endian);
88extern int kvmppc_handle_vmx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
89 unsigned int rs, unsigned int bytes, int is_default_endian);
90extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
91 u64 val, unsigned int bytes,
92 int is_default_endian);
93extern int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
94 int rs, unsigned int bytes,
95 int is_default_endian);
96
97extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
98 enum instruction_fetch_type type, u32 *inst);
99
100extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
101 bool data);
102extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
103 bool data);
104extern int kvmppc_emulate_instruction(struct kvm_run *run,
105 struct kvm_vcpu *vcpu);
106extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
107extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
108extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
109extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
110extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
111extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
112extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
113extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
114
115/* Core-specific hooks */
116
117extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
118 unsigned int gtlb_idx);
119extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
120extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
121extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
122extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
123extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
124extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
125extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
126 gva_t eaddr);
127extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
128extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
129extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
130 enum xlate_instdata xlid, enum xlate_readwrite xlrw,
131 struct kvmppc_pte *pte);
132
133extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
134 unsigned int id);
135extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
136extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
137extern int kvmppc_core_check_processor_compat(void);
138extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
139 struct kvm_translation *tr);
140
141extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
142extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
143
144extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
145extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
146extern void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong flags);
147extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
148extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu);
149extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu);
150extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu);
151extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
152extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
153extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
154 struct kvm_interrupt *irq);
155extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
156extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags,
157 ulong esr_flags);
158extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
159 ulong dear_flags,
160 ulong esr_flags);
161extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu);
162extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
163 ulong esr_flags);
164extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
165extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
166
167extern int kvmppc_booke_init(void);
168extern void kvmppc_booke_exit(void);
169
170extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
171extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
172extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
173
174extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order);
175extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info);
176extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order);
177extern void kvmppc_free_hpt(struct kvm_hpt_info *info);
178extern void kvmppc_rmap_reset(struct kvm *kvm);
179extern long kvmppc_prepare_vrma(struct kvm *kvm,
180 struct kvm_userspace_memory_region *mem);
181extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
182 struct kvm_memory_slot *memslot, unsigned long porder);
183extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
184extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
185 struct iommu_group *grp);
186extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
187 struct iommu_group *grp);
188extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm);
189extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm);
190extern void kvmppc_setup_partition_table(struct kvm *kvm);
191
192extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
193 struct kvm_create_spapr_tce_64 *args);
194extern struct kvmppc_spapr_tce_table *kvmppc_find_table(
195 struct kvm *kvm, unsigned long liobn);
196#define kvmppc_ioba_validate(stt, ioba, npages) \
197 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \
198 (stt)->size, (ioba), (npages)) ? \
199 H_PARAMETER : H_SUCCESS)
200extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
201 unsigned long ioba, unsigned long tce);
202extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
203 unsigned long liobn, unsigned long ioba,
204 unsigned long tce_list, unsigned long npages);
205extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
206 unsigned long liobn, unsigned long ioba,
207 unsigned long tce_value, unsigned long npages);
208extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
209 unsigned long ioba);
210extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages);
211extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages);
212extern int kvmppc_core_init_vm(struct kvm *kvm);
213extern void kvmppc_core_destroy_vm(struct kvm *kvm);
214extern void kvmppc_core_free_memslot(struct kvm *kvm,
215 struct kvm_memory_slot *free,
216 struct kvm_memory_slot *dont);
217extern int kvmppc_core_create_memslot(struct kvm *kvm,
218 struct kvm_memory_slot *slot,
219 unsigned long npages);
220extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
221 struct kvm_memory_slot *memslot,
222 const struct kvm_userspace_memory_region *mem);
223extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
224 const struct kvm_userspace_memory_region *mem,
225 const struct kvm_memory_slot *old,
226 const struct kvm_memory_slot *new,
227 enum kvm_mr_change change);
228extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
229 struct kvm_ppc_smmu_info *info);
230extern void kvmppc_core_flush_memslot(struct kvm *kvm,
231 struct kvm_memory_slot *memslot);
232
233extern int kvmppc_bookehv_init(void);
234extern void kvmppc_bookehv_exit(void);
235
236extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
237
238extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
239extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm,
240 struct kvm_ppc_resize_hpt *rhpt);
241extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm,
242 struct kvm_ppc_resize_hpt *rhpt);
243
244int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
245
246extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
247extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
248extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
249
250extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
251 u32 priority);
252extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
253 u32 *priority);
254extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
255extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
256
257void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
258void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
259
260union kvmppc_one_reg {
261 u32 wval;
262 u64 dval;
263 vector128 vval;
264 u64 vsxval[2];
265 u32 vsx32val[4];
266 u16 vsx16val[8];
267 u8 vsx8val[16];
268 struct {
269 u64 addr;
270 u64 length;
271 } vpaval;
272 u64 xive_timaval[2];
273};
274
275struct kvmppc_ops {
276 struct module *owner;
277 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
278 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
279 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
280 union kvmppc_one_reg *val);
281 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
282 union kvmppc_one_reg *val);
283 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
284 void (*vcpu_put)(struct kvm_vcpu *vcpu);
285 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
286 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
287 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
288 void (*vcpu_free)(struct kvm_vcpu *vcpu);
289 int (*check_requests)(struct kvm_vcpu *vcpu);
290 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
291 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
292 int (*prepare_memory_region)(struct kvm *kvm,
293 struct kvm_memory_slot *memslot,
294 const struct kvm_userspace_memory_region *mem);
295 void (*commit_memory_region)(struct kvm *kvm,
296 const struct kvm_userspace_memory_region *mem,
297 const struct kvm_memory_slot *old,
298 const struct kvm_memory_slot *new,
299 enum kvm_mr_change change);
300 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start,
301 unsigned long end);
302 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end);
303 int (*test_age_hva)(struct kvm *kvm, unsigned long hva);
304 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte);
305 void (*mmu_destroy)(struct kvm_vcpu *vcpu);
306 void (*free_memslot)(struct kvm_memory_slot *free,
307 struct kvm_memory_slot *dont);
308 int (*create_memslot)(struct kvm_memory_slot *slot,
309 unsigned long npages);
310 int (*init_vm)(struct kvm *kvm);
311 void (*destroy_vm)(struct kvm *kvm);
312 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
313 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu,
314 unsigned int inst, int *advance);
315 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
316 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
317 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
318 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
319 unsigned long arg);
320 int (*hcall_implemented)(unsigned long hcall);
321 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *,
322 struct irq_bypass_producer *);
323 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *,
324 struct irq_bypass_producer *);
325 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg);
326 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
327 int (*set_smt_mode)(struct kvm *kvm, unsigned long mode,
328 unsigned long flags);
329 void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr);
330 int (*enable_nested)(struct kvm *kvm);
331 int (*load_from_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
332 int size);
333 int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
334 int size);
335};
336
337extern struct kvmppc_ops *kvmppc_hv_ops;
338extern struct kvmppc_ops *kvmppc_pr_ops;
339
340static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
341 enum instruction_fetch_type type, u32 *inst)
342{
343 int ret = EMULATE_DONE;
344 u32 fetched_inst;
345
346 /* Load the instruction manually if it failed to do so in the
347 * exit path */
348 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
349 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
350
351 /* Write fetch_failed unswapped if the fetch failed */
352 if (ret == EMULATE_DONE)
353 fetched_inst = kvmppc_need_byteswap(vcpu) ?
354 swab32(vcpu->arch.last_inst) :
355 vcpu->arch.last_inst;
356 else
357 fetched_inst = vcpu->arch.last_inst;
358
359 *inst = fetched_inst;
360 return ret;
361}
362
363static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
364{
365 return kvm->arch.kvm_ops == kvmppc_hv_ops;
366}
367
368extern int kvmppc_hwrng_present(void);
369
370/*
371 * Cuts out inst bits with ordering according to spec.
372 * That means the leftmost bit is zero. All given bits are included.
373 */
374static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
375{
376 u32 r;
377 u32 mask;
378
379 BUG_ON(msb > lsb);
380
381 mask = (1 << (lsb - msb + 1)) - 1;
382 r = (inst >> (63 - lsb)) & mask;
383
384 return r;
385}
386
387/*
388 * Replaces inst bits with ordering according to spec.
389 */
390static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
391{
392 u32 r;
393 u32 mask;
394
395 BUG_ON(msb > lsb);
396
397 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
398 r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
399
400 return r;
401}
402
403#define one_reg_size(id) \
404 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
405
406#define get_reg_val(id, reg) ({ \
407 union kvmppc_one_reg __u; \
408 switch (one_reg_size(id)) { \
409 case 4: __u.wval = (reg); break; \
410 case 8: __u.dval = (reg); break; \
411 default: BUG(); \
412 } \
413 __u; \
414})
415
416
417#define set_reg_val(id, val) ({ \
418 u64 __v; \
419 switch (one_reg_size(id)) { \
420 case 4: __v = (val).wval; break; \
421 case 8: __v = (val).dval; break; \
422 default: BUG(); \
423 } \
424 __v; \
425})
426
427int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
428int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
429
430int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
431int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
432
433int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
434int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
435int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
436int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
437
438void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
439
440struct openpic;
441
442#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
443extern void kvm_cma_reserve(void) __init;
444static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
445{
446 paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr;
447}
448
449static inline void kvmppc_set_xive_tima(int cpu,
450 unsigned long phys_addr,
451 void __iomem *virt_addr)
452{
453 paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr;
454 paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr;
455}
456
457static inline u32 kvmppc_get_xics_latch(void)
458{
459 u32 xirr;
460
461 xirr = get_paca()->kvm_hstate.saved_xirr;
462 get_paca()->kvm_hstate.saved_xirr = 0;
463 return xirr;
464}
465
466static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
467{
468 paca_ptrs[cpu]->kvm_hstate.host_ipi = host_ipi;
469}
470
471static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
472{
473 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
474}
475
476extern void kvm_hv_vm_activated(void);
477extern void kvm_hv_vm_deactivated(void);
478extern bool kvm_hv_mode_active(void);
479
480extern void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu,
481 struct kvm_nested_guest *nested);
482
483#else
484static inline void __init kvm_cma_reserve(void)
485{}
486
487static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
488{}
489
490static inline void kvmppc_set_xive_tima(int cpu,
491 unsigned long phys_addr,
492 void __iomem *virt_addr)
493{}
494
495static inline u32 kvmppc_get_xics_latch(void)
496{
497 return 0;
498}
499
500static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
501{}
502
503static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
504{
505 kvm_vcpu_kick(vcpu);
506}
507
508static inline bool kvm_hv_mode_active(void) { return false; }
509
510#endif
511
512#ifdef CONFIG_KVM_XICS
513static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
514{
515 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
516}
517
518static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
519 struct kvm *kvm)
520{
521 if (kvm && kvm_irq_bypass)
522 return kvm->arch.pimap;
523 return NULL;
524}
525
526extern void kvmppc_alloc_host_rm_ops(void);
527extern void kvmppc_free_host_rm_ops(void);
528extern void kvmppc_free_pimap(struct kvm *kvm);
529extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall);
530extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
531extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
532extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
533extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
534extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
535 struct kvm_vcpu *vcpu, u32 cpu);
536extern void kvmppc_xics_ipi_action(void);
537extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq,
538 unsigned long host_irq);
539extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
540 unsigned long host_irq);
541extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr,
542 struct kvmppc_irq_map *irq_map,
543 struct kvmppc_passthru_irqmap *pimap,
544 bool *again);
545
546extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
547 int level, bool line_status);
548
549extern int h_ipi_redirect;
550#else
551static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
552 struct kvm *kvm)
553 { return NULL; }
554static inline void kvmppc_alloc_host_rm_ops(void) {};
555static inline void kvmppc_free_host_rm_ops(void) {};
556static inline void kvmppc_free_pimap(struct kvm *kvm) {};
557static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall)
558 { return 0; }
559static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
560 { return 0; }
561static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
562static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
563 { return 0; }
564#endif
565
566#ifdef CONFIG_KVM_XIVE
567/*
568 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine"
569 * ie. P9 new interrupt controller, while the second "xive" is the legacy
570 * "eXternal Interrupt Vector Entry" which is the configuration of an
571 * interrupt on the "xics" interrupt controller on P8 and earlier. Those
572 * two function consume or produce a legacy "XIVE" state from the
573 * new "XIVE" interrupt controller.
574 */
575extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
576 u32 priority);
577extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
578 u32 *priority);
579extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq);
580extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq);
581extern void kvmppc_xive_init_module(void);
582extern void kvmppc_xive_exit_module(void);
583
584extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
585 struct kvm_vcpu *vcpu, u32 cpu);
586extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu);
587extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
588 struct irq_desc *host_desc);
589extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
590 struct irq_desc *host_desc);
591extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu);
592extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
593
594extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
595 int level, bool line_status);
596extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu);
597
598static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu)
599{
600 return vcpu->arch.irq_type == KVMPPC_IRQ_XIVE;
601}
602
603extern int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev,
604 struct kvm_vcpu *vcpu, u32 cpu);
605extern void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu);
606extern void kvmppc_xive_native_init_module(void);
607extern void kvmppc_xive_native_exit_module(void);
608extern int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu,
609 union kvmppc_one_reg *val);
610extern int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu,
611 union kvmppc_one_reg *val);
612
613#else
614static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
615 u32 priority) { return -1; }
616static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
617 u32 *priority) { return -1; }
618static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; }
619static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; }
620static inline void kvmppc_xive_init_module(void) { }
621static inline void kvmppc_xive_exit_module(void) { }
622
623static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
624 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
625static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
626static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
627 struct irq_desc *host_desc) { return -ENODEV; }
628static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
629 struct irq_desc *host_desc) { return -ENODEV; }
630static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; }
631static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; }
632
633static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
634 int level, bool line_status) { return -ENODEV; }
635static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { }
636
637static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu)
638 { return 0; }
639static inline int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev,
640 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
641static inline void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
642static inline void kvmppc_xive_native_init_module(void) { }
643static inline void kvmppc_xive_native_exit_module(void) { }
644static inline int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu,
645 union kvmppc_one_reg *val)
646{ return 0; }
647static inline int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu,
648 union kvmppc_one_reg *val)
649{ return -ENOENT; }
650
651#endif /* CONFIG_KVM_XIVE */
652
653#if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER)
654static inline bool xics_on_xive(void)
655{
656 return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE);
657}
658#else
659static inline bool xics_on_xive(void)
660{
661 return false;
662}
663#endif
664
665/*
666 * Prototypes for functions called only from assembler code.
667 * Having prototypes reduces sparse errors.
668 */
669long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
670 unsigned long ioba, unsigned long tce);
671long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
672 unsigned long liobn, unsigned long ioba,
673 unsigned long tce_list, unsigned long npages);
674long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
675 unsigned long liobn, unsigned long ioba,
676 unsigned long tce_value, unsigned long npages);
677long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target,
678 unsigned int yield_count);
679long kvmppc_h_random(struct kvm_vcpu *vcpu);
680void kvmhv_commence_exit(int trap);
681void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu);
682void kvmppc_subcore_enter_guest(void);
683void kvmppc_subcore_exit_guest(void);
684long kvmppc_realmode_hmi_handler(void);
685long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
686 long pte_index, unsigned long pteh, unsigned long ptel);
687long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
688 unsigned long pte_index, unsigned long avpn);
689long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu);
690long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
691 unsigned long pte_index, unsigned long avpn,
692 unsigned long va);
693long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
694 unsigned long pte_index);
695long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
696 unsigned long pte_index);
697long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
698 unsigned long pte_index);
699long kvmppc_rm_h_page_init(struct kvm_vcpu *vcpu, unsigned long flags,
700 unsigned long dest, unsigned long src);
701long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr,
702 unsigned long slb_v, unsigned int status, bool data);
703unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu);
704unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu);
705unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server);
706int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server,
707 unsigned long mfrr);
708int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr);
709int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr);
710void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu);
711
712/*
713 * Host-side operations we want to set up while running in real
714 * mode in the guest operating on the xics.
715 * Currently only VCPU wakeup is supported.
716 */
717
718union kvmppc_rm_state {
719 unsigned long raw;
720 struct {
721 u32 in_host;
722 u32 rm_action;
723 };
724};
725
726struct kvmppc_host_rm_core {
727 union kvmppc_rm_state rm_state;
728 void *rm_data;
729 char pad[112];
730};
731
732struct kvmppc_host_rm_ops {
733 struct kvmppc_host_rm_core *rm_core;
734 void (*vcpu_kick)(struct kvm_vcpu *vcpu);
735};
736
737extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv;
738
739static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
740{
741#ifdef CONFIG_KVM_BOOKE_HV
742 return mfspr(SPRN_GEPR);
743#elif defined(CONFIG_BOOKE)
744 return vcpu->arch.epr;
745#else
746 return 0;
747#endif
748}
749
750static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
751{
752#ifdef CONFIG_KVM_BOOKE_HV
753 mtspr(SPRN_GEPR, epr);
754#elif defined(CONFIG_BOOKE)
755 vcpu->arch.epr = epr;
756#endif
757}
758
759#ifdef CONFIG_KVM_MPIC
760
761void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
762int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
763 u32 cpu);
764void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
765
766#else
767
768static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
769{
770}
771
772static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
773 struct kvm_vcpu *vcpu, u32 cpu)
774{
775 return -EINVAL;
776}
777
778static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
779 struct kvm_vcpu *vcpu)
780{
781}
782
783#endif /* CONFIG_KVM_MPIC */
784
785int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
786 struct kvm_config_tlb *cfg);
787int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
788 struct kvm_dirty_tlb *cfg);
789
790long kvmppc_alloc_lpid(void);
791void kvmppc_claim_lpid(long lpid);
792void kvmppc_free_lpid(long lpid);
793void kvmppc_init_lpid(unsigned long nr_lpids);
794
795static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn)
796{
797 struct page *page;
798 /*
799 * We can only access pages that the kernel maps
800 * as memory. Bail out for unmapped ones.
801 */
802 if (!pfn_valid(pfn))
803 return;
804
805 /* Clear i-cache for new pages */
806 page = pfn_to_page(pfn);
807 if (!test_bit(PG_arch_1, &page->flags)) {
808 flush_dcache_icache_page(page);
809 set_bit(PG_arch_1, &page->flags);
810 }
811}
812
813/*
814 * Shared struct helpers. The shared struct can be little or big endian,
815 * depending on the guest endianness. So expose helpers to all of them.
816 */
817static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
818{
819#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
820 /* Only Book3S_64 PR supports bi-endian for now */
821 return vcpu->arch.shared_big_endian;
822#elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
823 /* Book3s_64 HV on little endian is always little endian */
824 return false;
825#else
826 return true;
827#endif
828}
829
830#define SPRNG_WRAPPER_GET(reg, bookehv_spr) \
831static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
832{ \
833 return mfspr(bookehv_spr); \
834} \
835
836#define SPRNG_WRAPPER_SET(reg, bookehv_spr) \
837static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \
838{ \
839 mtspr(bookehv_spr, val); \
840} \
841
842#define SHARED_WRAPPER_GET(reg, size) \
843static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
844{ \
845 if (kvmppc_shared_big_endian(vcpu)) \
846 return be##size##_to_cpu(vcpu->arch.shared->reg); \
847 else \
848 return le##size##_to_cpu(vcpu->arch.shared->reg); \
849} \
850
851#define SHARED_WRAPPER_SET(reg, size) \
852static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
853{ \
854 if (kvmppc_shared_big_endian(vcpu)) \
855 vcpu->arch.shared->reg = cpu_to_be##size(val); \
856 else \
857 vcpu->arch.shared->reg = cpu_to_le##size(val); \
858} \
859
860#define SHARED_WRAPPER(reg, size) \
861 SHARED_WRAPPER_GET(reg, size) \
862 SHARED_WRAPPER_SET(reg, size) \
863
864#define SPRNG_WRAPPER(reg, bookehv_spr) \
865 SPRNG_WRAPPER_GET(reg, bookehv_spr) \
866 SPRNG_WRAPPER_SET(reg, bookehv_spr) \
867
868#ifdef CONFIG_KVM_BOOKE_HV
869
870#define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
871 SPRNG_WRAPPER(reg, bookehv_spr) \
872
873#else
874
875#define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
876 SHARED_WRAPPER(reg, size) \
877
878#endif
879
880SHARED_WRAPPER(critical, 64)
881SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
882SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
883SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
884SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
885SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
886SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
887SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
888SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
889SHARED_WRAPPER_GET(msr, 64)
890static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
891{
892 if (kvmppc_shared_big_endian(vcpu))
893 vcpu->arch.shared->msr = cpu_to_be64(val);
894 else
895 vcpu->arch.shared->msr = cpu_to_le64(val);
896}
897SHARED_WRAPPER(dsisr, 32)
898SHARED_WRAPPER(int_pending, 32)
899SHARED_WRAPPER(sprg4, 64)
900SHARED_WRAPPER(sprg5, 64)
901SHARED_WRAPPER(sprg6, 64)
902SHARED_WRAPPER(sprg7, 64)
903
904static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
905{
906 if (kvmppc_shared_big_endian(vcpu))
907 return be32_to_cpu(vcpu->arch.shared->sr[nr]);
908 else
909 return le32_to_cpu(vcpu->arch.shared->sr[nr]);
910}
911
912static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
913{
914 if (kvmppc_shared_big_endian(vcpu))
915 vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
916 else
917 vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
918}
919
920/*
921 * Please call after prepare_to_enter. This function puts the lazy ee and irq
922 * disabled tracking state back to normal mode, without actually enabling
923 * interrupts.
924 */
925static inline void kvmppc_fix_ee_before_entry(void)
926{
927 trace_hardirqs_on();
928
929#ifdef CONFIG_PPC64
930 /*
931 * To avoid races, the caller must have gone directly from having
932 * interrupts fully-enabled to hard-disabled.
933 */
934 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
935
936 /* Only need to enable IRQs by hard enabling them after this */
937 local_paca->irq_happened = 0;
938 irq_soft_mask_set(IRQS_ENABLED);
939#endif
940}
941
942static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
943{
944 ulong ea;
945 ulong msr_64bit = 0;
946
947 ea = kvmppc_get_gpr(vcpu, rb);
948 if (ra)
949 ea += kvmppc_get_gpr(vcpu, ra);
950
951#if defined(CONFIG_PPC_BOOK3E_64)
952 msr_64bit = MSR_CM;
953#elif defined(CONFIG_PPC_BOOK3S_64)
954 msr_64bit = MSR_SF;
955#endif
956
957 if (!(kvmppc_get_msr(vcpu) & msr_64bit))
958 ea = (uint32_t)ea;
959
960 return ea;
961}
962
963extern void xics_wake_cpu(int cpu);
964
965#endif /* __POWERPC_KVM_PPC_H__ */