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#endif
40
41/*
42 * KVMPPC_INST_SW_BREAKPOINT is debug Instruction
43 * for supporting software breakpoint.
44 */
45#define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00
46
47enum emulation_result {
48 EMULATE_DONE, /* no further processing */
49 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
50 EMULATE_FAIL, /* can't emulate this instruction */
51 EMULATE_AGAIN, /* something went wrong. go again */
52 EMULATE_EXIT_USER, /* emulation requires exit to user-space */
53};
54
55enum instruction_type {
56 INST_GENERIC,
57 INST_SC, /* system call */
58};
59
60enum xlate_instdata {
61 XLATE_INST, /* translate instruction address */
62 XLATE_DATA /* translate data address */
63};
64
65enum xlate_readwrite {
66 XLATE_READ, /* check for read permissions */
67 XLATE_WRITE /* check for write permissions */
68};
69
70extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
71extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
72extern void kvmppc_handler_highmem(void);
73
74extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
75extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
76 unsigned int rt, unsigned int bytes,
77 int is_default_endian);
78extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
79 unsigned int rt, unsigned int bytes,
80 int is_default_endian);
81extern int kvmppc_handle_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
82 unsigned int rt, unsigned int bytes,
83 int is_default_endian, int mmio_sign_extend);
84extern int kvmppc_handle_load128_by2x64(struct kvm_run *run,
85 struct kvm_vcpu *vcpu, unsigned int rt, int is_default_endian);
86extern int kvmppc_handle_store128_by2x64(struct kvm_run *run,
87 struct kvm_vcpu *vcpu, unsigned int rs, int is_default_endian);
88extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
89 u64 val, unsigned int bytes,
90 int is_default_endian);
91extern int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
92 int rs, unsigned int bytes,
93 int is_default_endian);
94
95extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
96 enum instruction_type type, u32 *inst);
97
98extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
99 bool data);
100extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
101 bool data);
102extern int kvmppc_emulate_instruction(struct kvm_run *run,
103 struct kvm_vcpu *vcpu);
104extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
105extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
106extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
107extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
108extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
109extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
110extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
111extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
112
113/* Core-specific hooks */
114
115extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
116 unsigned int gtlb_idx);
117extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
118extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
119extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
120extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
121extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
122extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
123extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
124 gva_t eaddr);
125extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
126extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
127extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
128 enum xlate_instdata xlid, enum xlate_readwrite xlrw,
129 struct kvmppc_pte *pte);
130
131extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
132 unsigned int id);
133extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
134extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
135extern int kvmppc_core_check_processor_compat(void);
136extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
137 struct kvm_translation *tr);
138
139extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
140extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
141
142extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
143extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
144extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
145extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu);
146extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu);
147extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu);
148extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
149extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
150extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
151 struct kvm_interrupt *irq);
152extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
153extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags,
154 ulong esr_flags);
155extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
156 ulong dear_flags,
157 ulong esr_flags);
158extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu);
159extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
160 ulong esr_flags);
161extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
162extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
163
164extern int kvmppc_booke_init(void);
165extern void kvmppc_booke_exit(void);
166
167extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
168extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
169extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
170
171extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order);
172extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info);
173extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order);
174extern void kvmppc_free_hpt(struct kvm_hpt_info *info);
175extern void kvmppc_rmap_reset(struct kvm *kvm);
176extern long kvmppc_prepare_vrma(struct kvm *kvm,
177 struct kvm_userspace_memory_region *mem);
178extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
179 struct kvm_memory_slot *memslot, unsigned long porder);
180extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
181extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
182 struct iommu_group *grp);
183extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
184 struct iommu_group *grp);
185extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm);
186extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm);
187extern void kvmppc_setup_partition_table(struct kvm *kvm);
188
189extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
190 struct kvm_create_spapr_tce_64 *args);
191extern struct kvmppc_spapr_tce_table *kvmppc_find_table(
192 struct kvm *kvm, unsigned long liobn);
193#define kvmppc_ioba_validate(stt, ioba, npages) \
194 (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \
195 (stt)->size, (ioba), (npages)) ? \
196 H_PARAMETER : H_SUCCESS)
197extern long kvmppc_tce_validate(struct kvmppc_spapr_tce_table *tt,
198 unsigned long tce);
199extern long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa,
200 unsigned long *ua, unsigned long **prmap);
201extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt,
202 unsigned long idx, unsigned long tce);
203extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
204 unsigned long ioba, unsigned long tce);
205extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
206 unsigned long liobn, unsigned long ioba,
207 unsigned long tce_list, unsigned long npages);
208extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
209 unsigned long liobn, unsigned long ioba,
210 unsigned long tce_value, unsigned long npages);
211extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
212 unsigned long ioba);
213extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages);
214extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages);
215extern int kvmppc_core_init_vm(struct kvm *kvm);
216extern void kvmppc_core_destroy_vm(struct kvm *kvm);
217extern void kvmppc_core_free_memslot(struct kvm *kvm,
218 struct kvm_memory_slot *free,
219 struct kvm_memory_slot *dont);
220extern int kvmppc_core_create_memslot(struct kvm *kvm,
221 struct kvm_memory_slot *slot,
222 unsigned long npages);
223extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
224 struct kvm_memory_slot *memslot,
225 const struct kvm_userspace_memory_region *mem);
226extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
227 const struct kvm_userspace_memory_region *mem,
228 const struct kvm_memory_slot *old,
229 const struct kvm_memory_slot *new);
230extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
231 struct kvm_ppc_smmu_info *info);
232extern void kvmppc_core_flush_memslot(struct kvm *kvm,
233 struct kvm_memory_slot *memslot);
234
235extern int kvmppc_bookehv_init(void);
236extern void kvmppc_bookehv_exit(void);
237
238extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
239
240extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
241extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm,
242 struct kvm_ppc_resize_hpt *rhpt);
243extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm,
244 struct kvm_ppc_resize_hpt *rhpt);
245
246int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
247
248extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
249extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
250extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
251
252extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
253 u32 priority);
254extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
255 u32 *priority);
256extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
257extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
258
259void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
260void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
261
262union kvmppc_one_reg {
263 u32 wval;
264 u64 dval;
265 vector128 vval;
266 u64 vsxval[2];
267 u32 vsx32val[4];
268 struct {
269 u64 addr;
270 u64 length;
271 } vpaval;
272};
273
274struct kvmppc_ops {
275 struct module *owner;
276 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
277 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
278 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
279 union kvmppc_one_reg *val);
280 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
281 union kvmppc_one_reg *val);
282 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
283 void (*vcpu_put)(struct kvm_vcpu *vcpu);
284 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
285 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
286 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
287 void (*vcpu_free)(struct kvm_vcpu *vcpu);
288 int (*check_requests)(struct kvm_vcpu *vcpu);
289 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
290 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
291 int (*prepare_memory_region)(struct kvm *kvm,
292 struct kvm_memory_slot *memslot,
293 const struct kvm_userspace_memory_region *mem);
294 void (*commit_memory_region)(struct kvm *kvm,
295 const struct kvm_userspace_memory_region *mem,
296 const struct kvm_memory_slot *old,
297 const struct kvm_memory_slot *new);
298 int (*unmap_hva)(struct kvm *kvm, unsigned long hva);
299 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start,
300 unsigned long end);
301 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end);
302 int (*test_age_hva)(struct kvm *kvm, unsigned long hva);
303 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte);
304 void (*mmu_destroy)(struct kvm_vcpu *vcpu);
305 void (*free_memslot)(struct kvm_memory_slot *free,
306 struct kvm_memory_slot *dont);
307 int (*create_memslot)(struct kvm_memory_slot *slot,
308 unsigned long npages);
309 int (*init_vm)(struct kvm *kvm);
310 void (*destroy_vm)(struct kvm *kvm);
311 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
312 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu,
313 unsigned int inst, int *advance);
314 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
315 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
316 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
317 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
318 unsigned long arg);
319 int (*hcall_implemented)(unsigned long hcall);
320 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *,
321 struct irq_bypass_producer *);
322 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *,
323 struct irq_bypass_producer *);
324 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg);
325 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
326 int (*set_smt_mode)(struct kvm *kvm, unsigned long mode,
327 unsigned long flags);
328};
329
330extern struct kvmppc_ops *kvmppc_hv_ops;
331extern struct kvmppc_ops *kvmppc_pr_ops;
332
333static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
334 enum instruction_type type, u32 *inst)
335{
336 int ret = EMULATE_DONE;
337 u32 fetched_inst;
338
339 /* Load the instruction manually if it failed to do so in the
340 * exit path */
341 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
342 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
343
344 /* Write fetch_failed unswapped if the fetch failed */
345 if (ret == EMULATE_DONE)
346 fetched_inst = kvmppc_need_byteswap(vcpu) ?
347 swab32(vcpu->arch.last_inst) :
348 vcpu->arch.last_inst;
349 else
350 fetched_inst = vcpu->arch.last_inst;
351
352 *inst = fetched_inst;
353 return ret;
354}
355
356static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
357{
358 return kvm->arch.kvm_ops == kvmppc_hv_ops;
359}
360
361extern int kvmppc_hwrng_present(void);
362
363/*
364 * Cuts out inst bits with ordering according to spec.
365 * That means the leftmost bit is zero. All given bits are included.
366 */
367static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
368{
369 u32 r;
370 u32 mask;
371
372 BUG_ON(msb > lsb);
373
374 mask = (1 << (lsb - msb + 1)) - 1;
375 r = (inst >> (63 - lsb)) & mask;
376
377 return r;
378}
379
380/*
381 * Replaces inst bits with ordering according to spec.
382 */
383static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
384{
385 u32 r;
386 u32 mask;
387
388 BUG_ON(msb > lsb);
389
390 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
391 r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
392
393 return r;
394}
395
396#define one_reg_size(id) \
397 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
398
399#define get_reg_val(id, reg) ({ \
400 union kvmppc_one_reg __u; \
401 switch (one_reg_size(id)) { \
402 case 4: __u.wval = (reg); break; \
403 case 8: __u.dval = (reg); break; \
404 default: BUG(); \
405 } \
406 __u; \
407})
408
409
410#define set_reg_val(id, val) ({ \
411 u64 __v; \
412 switch (one_reg_size(id)) { \
413 case 4: __v = (val).wval; break; \
414 case 8: __v = (val).dval; break; \
415 default: BUG(); \
416 } \
417 __v; \
418})
419
420int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
421int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
422
423int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
424int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
425
426int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
427int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
428int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
429int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
430
431void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
432
433struct openpic;
434
435#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
436extern void kvm_cma_reserve(void) __init;
437static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
438{
439 paca[cpu].kvm_hstate.xics_phys = (void __iomem *)addr;
440}
441
442static inline void kvmppc_set_xive_tima(int cpu,
443 unsigned long phys_addr,
444 void __iomem *virt_addr)
445{
446 paca[cpu].kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr;
447 paca[cpu].kvm_hstate.xive_tima_virt = virt_addr;
448}
449
450static inline u32 kvmppc_get_xics_latch(void)
451{
452 u32 xirr;
453
454 xirr = get_paca()->kvm_hstate.saved_xirr;
455 get_paca()->kvm_hstate.saved_xirr = 0;
456 return xirr;
457}
458
459static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
460{
461 paca[cpu].kvm_hstate.host_ipi = host_ipi;
462}
463
464static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
465{
466 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
467}
468
469extern void kvm_hv_vm_activated(void);
470extern void kvm_hv_vm_deactivated(void);
471extern bool kvm_hv_mode_active(void);
472
473#else
474static inline void __init kvm_cma_reserve(void)
475{}
476
477static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
478{}
479
480static inline void kvmppc_set_xive_tima(int cpu,
481 unsigned long phys_addr,
482 void __iomem *virt_addr)
483{}
484
485static inline u32 kvmppc_get_xics_latch(void)
486{
487 return 0;
488}
489
490static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
491{}
492
493static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
494{
495 kvm_vcpu_kick(vcpu);
496}
497
498static inline bool kvm_hv_mode_active(void) { return false; }
499
500#endif
501
502#ifdef CONFIG_KVM_XICS
503static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
504{
505 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
506}
507
508static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
509 struct kvm *kvm)
510{
511 if (kvm && kvm_irq_bypass)
512 return kvm->arch.pimap;
513 return NULL;
514}
515
516extern void kvmppc_alloc_host_rm_ops(void);
517extern void kvmppc_free_host_rm_ops(void);
518extern void kvmppc_free_pimap(struct kvm *kvm);
519extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall);
520extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
521extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
522extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
523extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
524extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
525 struct kvm_vcpu *vcpu, u32 cpu);
526extern void kvmppc_xics_ipi_action(void);
527extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq,
528 unsigned long host_irq);
529extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
530 unsigned long host_irq);
531extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr,
532 struct kvmppc_irq_map *irq_map,
533 struct kvmppc_passthru_irqmap *pimap,
534 bool *again);
535
536extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
537 int level, bool line_status);
538
539extern int h_ipi_redirect;
540#else
541static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
542 struct kvm *kvm)
543 { return NULL; }
544static inline void kvmppc_alloc_host_rm_ops(void) {};
545static inline void kvmppc_free_host_rm_ops(void) {};
546static inline void kvmppc_free_pimap(struct kvm *kvm) {};
547static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall)
548 { return 0; }
549static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
550 { return 0; }
551static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
552static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
553 { return 0; }
554#endif
555
556#ifdef CONFIG_KVM_XIVE
557/*
558 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine"
559 * ie. P9 new interrupt controller, while the second "xive" is the legacy
560 * "eXternal Interrupt Vector Entry" which is the configuration of an
561 * interrupt on the "xics" interrupt controller on P8 and earlier. Those
562 * two function consume or produce a legacy "XIVE" state from the
563 * new "XIVE" interrupt controller.
564 */
565extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
566 u32 priority);
567extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
568 u32 *priority);
569extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq);
570extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq);
571extern void kvmppc_xive_init_module(void);
572extern void kvmppc_xive_exit_module(void);
573
574extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
575 struct kvm_vcpu *vcpu, u32 cpu);
576extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu);
577extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
578 struct irq_desc *host_desc);
579extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
580 struct irq_desc *host_desc);
581extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu);
582extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
583
584extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
585 int level, bool line_status);
586#else
587static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
588 u32 priority) { return -1; }
589static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
590 u32 *priority) { return -1; }
591static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; }
592static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; }
593static inline void kvmppc_xive_init_module(void) { }
594static inline void kvmppc_xive_exit_module(void) { }
595
596static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
597 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
598static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
599static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
600 struct irq_desc *host_desc) { return -ENODEV; }
601static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
602 struct irq_desc *host_desc) { return -ENODEV; }
603static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; }
604static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; }
605
606static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
607 int level, bool line_status) { return -ENODEV; }
608#endif /* CONFIG_KVM_XIVE */
609
610/*
611 * Prototypes for functions called only from assembler code.
612 * Having prototypes reduces sparse errors.
613 */
614long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
615 unsigned long ioba, unsigned long tce);
616long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
617 unsigned long liobn, unsigned long ioba,
618 unsigned long tce_list, unsigned long npages);
619long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
620 unsigned long liobn, unsigned long ioba,
621 unsigned long tce_value, unsigned long npages);
622long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target,
623 unsigned int yield_count);
624long kvmppc_h_random(struct kvm_vcpu *vcpu);
625void kvmhv_commence_exit(int trap);
626long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu);
627void kvmppc_subcore_enter_guest(void);
628void kvmppc_subcore_exit_guest(void);
629long kvmppc_realmode_hmi_handler(void);
630long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
631 long pte_index, unsigned long pteh, unsigned long ptel);
632long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
633 unsigned long pte_index, unsigned long avpn);
634long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu);
635long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
636 unsigned long pte_index, unsigned long avpn,
637 unsigned long va);
638long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
639 unsigned long pte_index);
640long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
641 unsigned long pte_index);
642long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
643 unsigned long pte_index);
644long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr,
645 unsigned long slb_v, unsigned int status, bool data);
646unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu);
647unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu);
648unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server);
649int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server,
650 unsigned long mfrr);
651int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr);
652int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr);
653
654/*
655 * Host-side operations we want to set up while running in real
656 * mode in the guest operating on the xics.
657 * Currently only VCPU wakeup is supported.
658 */
659
660union kvmppc_rm_state {
661 unsigned long raw;
662 struct {
663 u32 in_host;
664 u32 rm_action;
665 };
666};
667
668struct kvmppc_host_rm_core {
669 union kvmppc_rm_state rm_state;
670 void *rm_data;
671 char pad[112];
672};
673
674struct kvmppc_host_rm_ops {
675 struct kvmppc_host_rm_core *rm_core;
676 void (*vcpu_kick)(struct kvm_vcpu *vcpu);
677};
678
679extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv;
680
681static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
682{
683#ifdef CONFIG_KVM_BOOKE_HV
684 return mfspr(SPRN_GEPR);
685#elif defined(CONFIG_BOOKE)
686 return vcpu->arch.epr;
687#else
688 return 0;
689#endif
690}
691
692static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
693{
694#ifdef CONFIG_KVM_BOOKE_HV
695 mtspr(SPRN_GEPR, epr);
696#elif defined(CONFIG_BOOKE)
697 vcpu->arch.epr = epr;
698#endif
699}
700
701#ifdef CONFIG_KVM_MPIC
702
703void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
704int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
705 u32 cpu);
706void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
707
708#else
709
710static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
711{
712}
713
714static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
715 struct kvm_vcpu *vcpu, u32 cpu)
716{
717 return -EINVAL;
718}
719
720static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
721 struct kvm_vcpu *vcpu)
722{
723}
724
725#endif /* CONFIG_KVM_MPIC */
726
727int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
728 struct kvm_config_tlb *cfg);
729int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
730 struct kvm_dirty_tlb *cfg);
731
732long kvmppc_alloc_lpid(void);
733void kvmppc_claim_lpid(long lpid);
734void kvmppc_free_lpid(long lpid);
735void kvmppc_init_lpid(unsigned long nr_lpids);
736
737static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn)
738{
739 struct page *page;
740 /*
741 * We can only access pages that the kernel maps
742 * as memory. Bail out for unmapped ones.
743 */
744 if (!pfn_valid(pfn))
745 return;
746
747 /* Clear i-cache for new pages */
748 page = pfn_to_page(pfn);
749 if (!test_bit(PG_arch_1, &page->flags)) {
750 flush_dcache_icache_page(page);
751 set_bit(PG_arch_1, &page->flags);
752 }
753}
754
755/*
756 * Shared struct helpers. The shared struct can be little or big endian,
757 * depending on the guest endianness. So expose helpers to all of them.
758 */
759static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
760{
761#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
762 /* Only Book3S_64 PR supports bi-endian for now */
763 return vcpu->arch.shared_big_endian;
764#elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
765 /* Book3s_64 HV on little endian is always little endian */
766 return false;
767#else
768 return true;
769#endif
770}
771
772#define SPRNG_WRAPPER_GET(reg, bookehv_spr) \
773static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
774{ \
775 return mfspr(bookehv_spr); \
776} \
777
778#define SPRNG_WRAPPER_SET(reg, bookehv_spr) \
779static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \
780{ \
781 mtspr(bookehv_spr, val); \
782} \
783
784#define SHARED_WRAPPER_GET(reg, size) \
785static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
786{ \
787 if (kvmppc_shared_big_endian(vcpu)) \
788 return be##size##_to_cpu(vcpu->arch.shared->reg); \
789 else \
790 return le##size##_to_cpu(vcpu->arch.shared->reg); \
791} \
792
793#define SHARED_WRAPPER_SET(reg, size) \
794static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
795{ \
796 if (kvmppc_shared_big_endian(vcpu)) \
797 vcpu->arch.shared->reg = cpu_to_be##size(val); \
798 else \
799 vcpu->arch.shared->reg = cpu_to_le##size(val); \
800} \
801
802#define SHARED_WRAPPER(reg, size) \
803 SHARED_WRAPPER_GET(reg, size) \
804 SHARED_WRAPPER_SET(reg, size) \
805
806#define SPRNG_WRAPPER(reg, bookehv_spr) \
807 SPRNG_WRAPPER_GET(reg, bookehv_spr) \
808 SPRNG_WRAPPER_SET(reg, bookehv_spr) \
809
810#ifdef CONFIG_KVM_BOOKE_HV
811
812#define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
813 SPRNG_WRAPPER(reg, bookehv_spr) \
814
815#else
816
817#define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
818 SHARED_WRAPPER(reg, size) \
819
820#endif
821
822SHARED_WRAPPER(critical, 64)
823SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
824SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
825SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
826SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
827SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
828SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
829SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
830SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
831SHARED_WRAPPER_GET(msr, 64)
832static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
833{
834 if (kvmppc_shared_big_endian(vcpu))
835 vcpu->arch.shared->msr = cpu_to_be64(val);
836 else
837 vcpu->arch.shared->msr = cpu_to_le64(val);
838}
839SHARED_WRAPPER(dsisr, 32)
840SHARED_WRAPPER(int_pending, 32)
841SHARED_WRAPPER(sprg4, 64)
842SHARED_WRAPPER(sprg5, 64)
843SHARED_WRAPPER(sprg6, 64)
844SHARED_WRAPPER(sprg7, 64)
845
846static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
847{
848 if (kvmppc_shared_big_endian(vcpu))
849 return be32_to_cpu(vcpu->arch.shared->sr[nr]);
850 else
851 return le32_to_cpu(vcpu->arch.shared->sr[nr]);
852}
853
854static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
855{
856 if (kvmppc_shared_big_endian(vcpu))
857 vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
858 else
859 vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
860}
861
862/*
863 * Please call after prepare_to_enter. This function puts the lazy ee and irq
864 * disabled tracking state back to normal mode, without actually enabling
865 * interrupts.
866 */
867static inline void kvmppc_fix_ee_before_entry(void)
868{
869 trace_hardirqs_on();
870
871#ifdef CONFIG_PPC64
872 /*
873 * To avoid races, the caller must have gone directly from having
874 * interrupts fully-enabled to hard-disabled.
875 */
876 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
877
878 /* Only need to enable IRQs by hard enabling them after this */
879 local_paca->irq_happened = 0;
880 irq_soft_mask_set(IRQS_ENABLED);
881#endif
882}
883
884static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
885{
886 ulong ea;
887 ulong msr_64bit = 0;
888
889 ea = kvmppc_get_gpr(vcpu, rb);
890 if (ra)
891 ea += kvmppc_get_gpr(vcpu, ra);
892
893#if defined(CONFIG_PPC_BOOK3E_64)
894 msr_64bit = MSR_CM;
895#elif defined(CONFIG_PPC_BOOK3S_64)
896 msr_64bit = MSR_SF;
897#endif
898
899 if (!(kvmppc_get_msr(vcpu) & msr_64bit))
900 ea = (uint32_t)ea;
901
902 return ea;
903}
904
905extern void xics_wake_cpu(int cpu);
906
907#endif /* __POWERPC_KVM_PPC_H__ */