1 /*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2008
16 *
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 */
19
20 #ifndef __POWERPC_KVM_PPC_H__
21 #define __POWERPC_KVM_PPC_H__
22
23 /* This file exists just so we can dereference kvm_vcpu, avoiding nested header
24 * dependencies. */
25
26 #include <linux/mutex.h>
27 #include <linux/timer.h>
28 #include <linux/types.h>
29 #include <linux/kvm_types.h>
30 #include <linux/kvm_host.h>
31 #include <linux/bug.h>
32 #ifdef CONFIG_PPC_BOOK3S
33 #include <asm/kvm_book3s.h>
34 #else
35 #include <asm/kvm_booke.h>
36 #endif
37 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
38 #include <asm/paca.h>
39 #endif
40
41 /*
42 * KVMPPC_INST_SW_BREAKPOINT is debug Instruction
43 * for supporting software breakpoint.
44 */
45 #define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00
46
47 enum emulation_result {
48 EMULATE_DONE, /* no further processing */
49 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
50 EMULATE_FAIL, /* can't emulate this instruction */
51 EMULATE_AGAIN, /* something went wrong. go again */
52 EMULATE_EXIT_USER, /* emulation requires exit to user-space */
53 };
54
55 enum instruction_fetch_type {
56 INST_GENERIC,
57 INST_SC, /* system call */
58 };
59
60 enum xlate_instdata {
61 XLATE_INST, /* translate instruction address */
62 XLATE_DATA /* translate data address */
63 };
64
65 enum xlate_readwrite {
66 XLATE_READ, /* check for read permissions */
67 XLATE_WRITE /* check for write permissions */
68 };
69
70 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
71 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
72 extern void kvmppc_handler_highmem(void);
73
74 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
75 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
76 unsigned int rt, unsigned int bytes,
77 int is_default_endian);
78 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
79 unsigned int rt, unsigned int bytes,
80 int is_default_endian);
81 extern int kvmppc_handle_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);
84 extern int kvmppc_handle_vmx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
85 unsigned int rt, unsigned int bytes, int is_default_endian);
86 extern int kvmppc_handle_vmx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
87 unsigned int rs, unsigned int bytes, int is_default_endian);
88 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
89 u64 val, unsigned int bytes,
90 int is_default_endian);
91 extern 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
95 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
96 enum instruction_fetch_type type, u32 *inst);
97
98 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
99 bool data);
100 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
101 bool data);
102 extern int kvmppc_emulate_instruction(struct kvm_run *run,
103 struct kvm_vcpu *vcpu);
104 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
105 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
106 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
107 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
108 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
109 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
110 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
111 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
112
113 /* Core-specific hooks */
114
115 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
116 unsigned int gtlb_idx);
117 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
118 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
119 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
120 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
121 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
122 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
123 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
124 gva_t eaddr);
125 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
126 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
127 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
128 enum xlate_instdata xlid, enum xlate_readwrite xlrw,
129 struct kvmppc_pte *pte);
130
131 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
132 unsigned int id);
133 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
134 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
135 extern int kvmppc_core_check_processor_compat(void);
136 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
137 struct kvm_translation *tr);
138
139 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
140 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
141
142 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
143 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
144 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
145 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu);
146 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu);
147 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu);
148 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
149 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
150 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
151 struct kvm_interrupt *irq);
152 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
153 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags,
154 ulong esr_flags);
155 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
156 ulong dear_flags,
157 ulong esr_flags);
158 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu);
159 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
160 ulong esr_flags);
161 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
162 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
163
164 extern int kvmppc_booke_init(void);
165 extern void kvmppc_booke_exit(void);
166
167 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
168 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
169 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
170
171 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order);
172 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info);
173 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order);
174 extern void kvmppc_free_hpt(struct kvm_hpt_info *info);
175 extern void kvmppc_rmap_reset(struct kvm *kvm);
176 extern long kvmppc_prepare_vrma(struct kvm *kvm,
177 struct kvm_userspace_memory_region *mem);
178 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
179 struct kvm_memory_slot *memslot, unsigned long porder);
180 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
181 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
182 struct iommu_group *grp);
183 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
184 struct iommu_group *grp);
185 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm);
186 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm);
187 extern void kvmppc_setup_partition_table(struct kvm *kvm);
188
189 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
190 struct kvm_create_spapr_tce_64 *args);
191 extern 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)
197 extern long kvmppc_tce_validate(struct kvmppc_spapr_tce_table *tt,
198 unsigned long tce);
199 extern long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa,
200 unsigned long *ua, unsigned long **prmap);
201 extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt,
202 unsigned long idx, unsigned long tce);
203 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
204 unsigned long ioba, unsigned long tce);
205 extern 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);
208 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
209 unsigned long liobn, unsigned long ioba,
210 unsigned long tce_value, unsigned long npages);
211 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
212 unsigned long ioba);
213 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages);
214 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages);
215 extern int kvmppc_core_init_vm(struct kvm *kvm);
216 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
217 extern void kvmppc_core_free_memslot(struct kvm *kvm,
218 struct kvm_memory_slot *free,
219 struct kvm_memory_slot *dont);
220 extern int kvmppc_core_create_memslot(struct kvm *kvm,
221 struct kvm_memory_slot *slot,
222 unsigned long npages);
223 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
224 struct kvm_memory_slot *memslot,
225 const struct kvm_userspace_memory_region *mem);
226 extern 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);
230 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
231 struct kvm_ppc_smmu_info *info);
232 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
233 struct kvm_memory_slot *memslot);
234
235 extern int kvmppc_bookehv_init(void);
236 extern void kvmppc_bookehv_exit(void);
237
238 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
239
240 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
241 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm,
242 struct kvm_ppc_resize_hpt *rhpt);
243 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm,
244 struct kvm_ppc_resize_hpt *rhpt);
245
246 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
247
248 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
249 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
250 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
251
252 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
253 u32 priority);
254 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
255 u32 *priority);
256 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
257 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
258
259 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
260 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
261
262 union kvmppc_one_reg {
263 u32 wval;
264 u64 dval;
265 vector128 vval;
266 u64 vsxval[2];
267 u32 vsx32val[4];
268 u16 vsx16val[8];
269 u8 vsx8val[16];
270 struct {
271 u64 addr;
272 u64 length;
273 } vpaval;
274 };
275
276 struct kvmppc_ops {
277 struct module *owner;
278 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
279 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
280 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
281 union kvmppc_one_reg *val);
282 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
283 union kvmppc_one_reg *val);
284 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
285 void (*vcpu_put)(struct kvm_vcpu *vcpu);
286 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
287 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
288 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
289 void (*vcpu_free)(struct kvm_vcpu *vcpu);
290 int (*check_requests)(struct kvm_vcpu *vcpu);
291 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
292 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
293 int (*prepare_memory_region)(struct kvm *kvm,
294 struct kvm_memory_slot *memslot,
295 const struct kvm_userspace_memory_region *mem);
296 void (*commit_memory_region)(struct kvm *kvm,
297 const struct kvm_userspace_memory_region *mem,
298 const struct kvm_memory_slot *old,
299 const struct kvm_memory_slot *new);
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 };
331
332 extern struct kvmppc_ops *kvmppc_hv_ops;
333 extern struct kvmppc_ops *kvmppc_pr_ops;
334
kvmppc_get_last_inst(struct kvm_vcpu * vcpu,enum instruction_fetch_type type,u32 * inst)335 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
336 enum instruction_fetch_type type, u32 *inst)
337 {
338 int ret = EMULATE_DONE;
339 u32 fetched_inst;
340
341 /* Load the instruction manually if it failed to do so in the
342 * exit path */
343 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
344 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
345
346 /* Write fetch_failed unswapped if the fetch failed */
347 if (ret == EMULATE_DONE)
348 fetched_inst = kvmppc_need_byteswap(vcpu) ?
349 swab32(vcpu->arch.last_inst) :
350 vcpu->arch.last_inst;
351 else
352 fetched_inst = vcpu->arch.last_inst;
353
354 *inst = fetched_inst;
355 return ret;
356 }
357
is_kvmppc_hv_enabled(struct kvm * kvm)358 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
359 {
360 return kvm->arch.kvm_ops == kvmppc_hv_ops;
361 }
362
363 extern int kvmppc_hwrng_present(void);
364
365 /*
366 * Cuts out inst bits with ordering according to spec.
367 * That means the leftmost bit is zero. All given bits are included.
368 */
kvmppc_get_field(u64 inst,int msb,int lsb)369 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
370 {
371 u32 r;
372 u32 mask;
373
374 BUG_ON(msb > lsb);
375
376 mask = (1 << (lsb - msb + 1)) - 1;
377 r = (inst >> (63 - lsb)) & mask;
378
379 return r;
380 }
381
382 /*
383 * Replaces inst bits with ordering according to spec.
384 */
kvmppc_set_field(u64 inst,int msb,int lsb,int value)385 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
386 {
387 u32 r;
388 u32 mask;
389
390 BUG_ON(msb > lsb);
391
392 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
393 r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
394
395 return r;
396 }
397
398 #define one_reg_size(id) \
399 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
400
401 #define get_reg_val(id, reg) ({ \
402 union kvmppc_one_reg __u; \
403 switch (one_reg_size(id)) { \
404 case 4: __u.wval = (reg); break; \
405 case 8: __u.dval = (reg); break; \
406 default: BUG(); \
407 } \
408 __u; \
409 })
410
411
412 #define set_reg_val(id, val) ({ \
413 u64 __v; \
414 switch (one_reg_size(id)) { \
415 case 4: __v = (val).wval; break; \
416 case 8: __v = (val).dval; break; \
417 default: BUG(); \
418 } \
419 __v; \
420 })
421
422 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
423 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
424
425 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
426 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
427
428 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
429 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
430 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
431 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
432
433 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
434
435 struct openpic;
436
437 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
438 extern void kvm_cma_reserve(void) __init;
kvmppc_set_xics_phys(int cpu,unsigned long addr)439 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
440 {
441 paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr;
442 }
443
kvmppc_set_xive_tima(int cpu,unsigned long phys_addr,void __iomem * virt_addr)444 static inline void kvmppc_set_xive_tima(int cpu,
445 unsigned long phys_addr,
446 void __iomem *virt_addr)
447 {
448 paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr;
449 paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr;
450 }
451
kvmppc_get_xics_latch(void)452 static inline u32 kvmppc_get_xics_latch(void)
453 {
454 u32 xirr;
455
456 xirr = get_paca()->kvm_hstate.saved_xirr;
457 get_paca()->kvm_hstate.saved_xirr = 0;
458 return xirr;
459 }
460
kvmppc_set_host_ipi(int cpu,u8 host_ipi)461 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
462 {
463 paca_ptrs[cpu]->kvm_hstate.host_ipi = host_ipi;
464 }
465
kvmppc_fast_vcpu_kick(struct kvm_vcpu * vcpu)466 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
467 {
468 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
469 }
470
471 extern void kvm_hv_vm_activated(void);
472 extern void kvm_hv_vm_deactivated(void);
473 extern bool kvm_hv_mode_active(void);
474
475 #else
kvm_cma_reserve(void)476 static inline void __init kvm_cma_reserve(void)
477 {}
478
kvmppc_set_xics_phys(int cpu,unsigned long addr)479 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
480 {}
481
kvmppc_set_xive_tima(int cpu,unsigned long phys_addr,void __iomem * virt_addr)482 static inline void kvmppc_set_xive_tima(int cpu,
483 unsigned long phys_addr,
484 void __iomem *virt_addr)
485 {}
486
kvmppc_get_xics_latch(void)487 static inline u32 kvmppc_get_xics_latch(void)
488 {
489 return 0;
490 }
491
kvmppc_set_host_ipi(int cpu,u8 host_ipi)492 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
493 {}
494
kvmppc_fast_vcpu_kick(struct kvm_vcpu * vcpu)495 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
496 {
497 kvm_vcpu_kick(vcpu);
498 }
499
kvm_hv_mode_active(void)500 static inline bool kvm_hv_mode_active(void) { return false; }
501
502 #endif
503
504 #ifdef CONFIG_KVM_XICS
kvmppc_xics_enabled(struct kvm_vcpu * vcpu)505 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
506 {
507 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
508 }
509
kvmppc_get_passthru_irqmap(struct kvm * kvm)510 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
511 struct kvm *kvm)
512 {
513 if (kvm && kvm_irq_bypass)
514 return kvm->arch.pimap;
515 return NULL;
516 }
517
518 extern void kvmppc_alloc_host_rm_ops(void);
519 extern void kvmppc_free_host_rm_ops(void);
520 extern void kvmppc_free_pimap(struct kvm *kvm);
521 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall);
522 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
523 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
524 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
525 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
526 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
527 struct kvm_vcpu *vcpu, u32 cpu);
528 extern void kvmppc_xics_ipi_action(void);
529 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq,
530 unsigned long host_irq);
531 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
532 unsigned long host_irq);
533 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr,
534 struct kvmppc_irq_map *irq_map,
535 struct kvmppc_passthru_irqmap *pimap,
536 bool *again);
537
538 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
539 int level, bool line_status);
540
541 extern int h_ipi_redirect;
542 #else
kvmppc_get_passthru_irqmap(struct kvm * kvm)543 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
544 struct kvm *kvm)
545 { return NULL; }
kvmppc_alloc_host_rm_ops(void)546 static inline void kvmppc_alloc_host_rm_ops(void) {};
kvmppc_free_host_rm_ops(void)547 static inline void kvmppc_free_host_rm_ops(void) {};
kvmppc_free_pimap(struct kvm * kvm)548 static inline void kvmppc_free_pimap(struct kvm *kvm) {};
kvmppc_xics_rm_complete(struct kvm_vcpu * vcpu,u32 hcall)549 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall)
550 { return 0; }
kvmppc_xics_enabled(struct kvm_vcpu * vcpu)551 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
552 { return 0; }
kvmppc_xics_free_icp(struct kvm_vcpu * vcpu)553 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
kvmppc_xics_hcall(struct kvm_vcpu * vcpu,u32 cmd)554 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
555 { return 0; }
556 #endif
557
558 #ifdef CONFIG_KVM_XIVE
559 /*
560 * Below the first "xive" is the "eXternal Interrupt Virtualization Engine"
561 * ie. P9 new interrupt controller, while the second "xive" is the legacy
562 * "eXternal Interrupt Vector Entry" which is the configuration of an
563 * interrupt on the "xics" interrupt controller on P8 and earlier. Those
564 * two function consume or produce a legacy "XIVE" state from the
565 * new "XIVE" interrupt controller.
566 */
567 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
568 u32 priority);
569 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
570 u32 *priority);
571 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq);
572 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq);
573 extern void kvmppc_xive_init_module(void);
574 extern void kvmppc_xive_exit_module(void);
575
576 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
577 struct kvm_vcpu *vcpu, u32 cpu);
578 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu);
579 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
580 struct irq_desc *host_desc);
581 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
582 struct irq_desc *host_desc);
583 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu);
584 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
585
586 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
587 int level, bool line_status);
588 #else
kvmppc_xive_set_xive(struct kvm * kvm,u32 irq,u32 server,u32 priority)589 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
590 u32 priority) { return -1; }
kvmppc_xive_get_xive(struct kvm * kvm,u32 irq,u32 * server,u32 * priority)591 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
592 u32 *priority) { return -1; }
kvmppc_xive_int_on(struct kvm * kvm,u32 irq)593 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; }
kvmppc_xive_int_off(struct kvm * kvm,u32 irq)594 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; }
kvmppc_xive_init_module(void)595 static inline void kvmppc_xive_init_module(void) { }
kvmppc_xive_exit_module(void)596 static inline void kvmppc_xive_exit_module(void) { }
597
kvmppc_xive_connect_vcpu(struct kvm_device * dev,struct kvm_vcpu * vcpu,u32 cpu)598 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
599 struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
kvmppc_xive_cleanup_vcpu(struct kvm_vcpu * vcpu)600 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
kvmppc_xive_set_mapped(struct kvm * kvm,unsigned long guest_irq,struct irq_desc * host_desc)601 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
602 struct irq_desc *host_desc) { return -ENODEV; }
kvmppc_xive_clr_mapped(struct kvm * kvm,unsigned long guest_irq,struct irq_desc * host_desc)603 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
604 struct irq_desc *host_desc) { return -ENODEV; }
kvmppc_xive_get_icp(struct kvm_vcpu * vcpu)605 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; }
kvmppc_xive_set_icp(struct kvm_vcpu * vcpu,u64 icpval)606 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; }
607
kvmppc_xive_set_irq(struct kvm * kvm,int irq_source_id,u32 irq,int level,bool line_status)608 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
609 int level, bool line_status) { return -ENODEV; }
610 #endif /* CONFIG_KVM_XIVE */
611
612 /*
613 * Prototypes for functions called only from assembler code.
614 * Having prototypes reduces sparse errors.
615 */
616 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
617 unsigned long ioba, unsigned long tce);
618 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
619 unsigned long liobn, unsigned long ioba,
620 unsigned long tce_list, unsigned long npages);
621 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
622 unsigned long liobn, unsigned long ioba,
623 unsigned long tce_value, unsigned long npages);
624 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target,
625 unsigned int yield_count);
626 long kvmppc_h_random(struct kvm_vcpu *vcpu);
627 void kvmhv_commence_exit(int trap);
628 long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu);
629 void kvmppc_subcore_enter_guest(void);
630 void kvmppc_subcore_exit_guest(void);
631 long kvmppc_realmode_hmi_handler(void);
632 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
633 long pte_index, unsigned long pteh, unsigned long ptel);
634 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
635 unsigned long pte_index, unsigned long avpn);
636 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu);
637 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
638 unsigned long pte_index, unsigned long avpn,
639 unsigned long va);
640 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
641 unsigned long pte_index);
642 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
643 unsigned long pte_index);
644 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
645 unsigned long pte_index);
646 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr,
647 unsigned long slb_v, unsigned int status, bool data);
648 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu);
649 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu);
650 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server);
651 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server,
652 unsigned long mfrr);
653 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr);
654 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr);
655
656 /*
657 * Host-side operations we want to set up while running in real
658 * mode in the guest operating on the xics.
659 * Currently only VCPU wakeup is supported.
660 */
661
662 union kvmppc_rm_state {
663 unsigned long raw;
664 struct {
665 u32 in_host;
666 u32 rm_action;
667 };
668 };
669
670 struct kvmppc_host_rm_core {
671 union kvmppc_rm_state rm_state;
672 void *rm_data;
673 char pad[112];
674 };
675
676 struct kvmppc_host_rm_ops {
677 struct kvmppc_host_rm_core *rm_core;
678 void (*vcpu_kick)(struct kvm_vcpu *vcpu);
679 };
680
681 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv;
682
kvmppc_get_epr(struct kvm_vcpu * vcpu)683 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
684 {
685 #ifdef CONFIG_KVM_BOOKE_HV
686 return mfspr(SPRN_GEPR);
687 #elif defined(CONFIG_BOOKE)
688 return vcpu->arch.epr;
689 #else
690 return 0;
691 #endif
692 }
693
kvmppc_set_epr(struct kvm_vcpu * vcpu,u32 epr)694 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
695 {
696 #ifdef CONFIG_KVM_BOOKE_HV
697 mtspr(SPRN_GEPR, epr);
698 #elif defined(CONFIG_BOOKE)
699 vcpu->arch.epr = epr;
700 #endif
701 }
702
703 #ifdef CONFIG_KVM_MPIC
704
705 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
706 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
707 u32 cpu);
708 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
709
710 #else
711
kvmppc_mpic_set_epr(struct kvm_vcpu * vcpu)712 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
713 {
714 }
715
kvmppc_mpic_connect_vcpu(struct kvm_device * dev,struct kvm_vcpu * vcpu,u32 cpu)716 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
717 struct kvm_vcpu *vcpu, u32 cpu)
718 {
719 return -EINVAL;
720 }
721
kvmppc_mpic_disconnect_vcpu(struct openpic * opp,struct kvm_vcpu * vcpu)722 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
723 struct kvm_vcpu *vcpu)
724 {
725 }
726
727 #endif /* CONFIG_KVM_MPIC */
728
729 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
730 struct kvm_config_tlb *cfg);
731 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
732 struct kvm_dirty_tlb *cfg);
733
734 long kvmppc_alloc_lpid(void);
735 void kvmppc_claim_lpid(long lpid);
736 void kvmppc_free_lpid(long lpid);
737 void kvmppc_init_lpid(unsigned long nr_lpids);
738
kvmppc_mmu_flush_icache(kvm_pfn_t pfn)739 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn)
740 {
741 struct page *page;
742 /*
743 * We can only access pages that the kernel maps
744 * as memory. Bail out for unmapped ones.
745 */
746 if (!pfn_valid(pfn))
747 return;
748
749 /* Clear i-cache for new pages */
750 page = pfn_to_page(pfn);
751 if (!test_bit(PG_arch_1, &page->flags)) {
752 flush_dcache_icache_page(page);
753 set_bit(PG_arch_1, &page->flags);
754 }
755 }
756
757 /*
758 * Shared struct helpers. The shared struct can be little or big endian,
759 * depending on the guest endianness. So expose helpers to all of them.
760 */
kvmppc_shared_big_endian(struct kvm_vcpu * vcpu)761 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
762 {
763 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
764 /* Only Book3S_64 PR supports bi-endian for now */
765 return vcpu->arch.shared_big_endian;
766 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
767 /* Book3s_64 HV on little endian is always little endian */
768 return false;
769 #else
770 return true;
771 #endif
772 }
773
774 #define SPRNG_WRAPPER_GET(reg, bookehv_spr) \
775 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
776 { \
777 return mfspr(bookehv_spr); \
778 } \
779
780 #define SPRNG_WRAPPER_SET(reg, bookehv_spr) \
781 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \
782 { \
783 mtspr(bookehv_spr, val); \
784 } \
785
786 #define SHARED_WRAPPER_GET(reg, size) \
787 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
788 { \
789 if (kvmppc_shared_big_endian(vcpu)) \
790 return be##size##_to_cpu(vcpu->arch.shared->reg); \
791 else \
792 return le##size##_to_cpu(vcpu->arch.shared->reg); \
793 } \
794
795 #define SHARED_WRAPPER_SET(reg, size) \
796 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
797 { \
798 if (kvmppc_shared_big_endian(vcpu)) \
799 vcpu->arch.shared->reg = cpu_to_be##size(val); \
800 else \
801 vcpu->arch.shared->reg = cpu_to_le##size(val); \
802 } \
803
804 #define SHARED_WRAPPER(reg, size) \
805 SHARED_WRAPPER_GET(reg, size) \
806 SHARED_WRAPPER_SET(reg, size) \
807
808 #define SPRNG_WRAPPER(reg, bookehv_spr) \
809 SPRNG_WRAPPER_GET(reg, bookehv_spr) \
810 SPRNG_WRAPPER_SET(reg, bookehv_spr) \
811
812 #ifdef CONFIG_KVM_BOOKE_HV
813
814 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
815 SPRNG_WRAPPER(reg, bookehv_spr) \
816
817 #else
818
819 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
820 SHARED_WRAPPER(reg, size) \
821
822 #endif
823
824 SHARED_WRAPPER(critical, 64)
825 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
826 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
827 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
828 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
829 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
830 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
831 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
832 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
833 SHARED_WRAPPER_GET(msr, 64)
kvmppc_set_msr_fast(struct kvm_vcpu * vcpu,u64 val)834 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
835 {
836 if (kvmppc_shared_big_endian(vcpu))
837 vcpu->arch.shared->msr = cpu_to_be64(val);
838 else
839 vcpu->arch.shared->msr = cpu_to_le64(val);
840 }
841 SHARED_WRAPPER(dsisr, 32)
842 SHARED_WRAPPER(int_pending, 32)
843 SHARED_WRAPPER(sprg4, 64)
844 SHARED_WRAPPER(sprg5, 64)
845 SHARED_WRAPPER(sprg6, 64)
846 SHARED_WRAPPER(sprg7, 64)
847
kvmppc_get_sr(struct kvm_vcpu * vcpu,int nr)848 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
849 {
850 if (kvmppc_shared_big_endian(vcpu))
851 return be32_to_cpu(vcpu->arch.shared->sr[nr]);
852 else
853 return le32_to_cpu(vcpu->arch.shared->sr[nr]);
854 }
855
kvmppc_set_sr(struct kvm_vcpu * vcpu,int nr,u32 val)856 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
857 {
858 if (kvmppc_shared_big_endian(vcpu))
859 vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
860 else
861 vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
862 }
863
864 /*
865 * Please call after prepare_to_enter. This function puts the lazy ee and irq
866 * disabled tracking state back to normal mode, without actually enabling
867 * interrupts.
868 */
kvmppc_fix_ee_before_entry(void)869 static inline void kvmppc_fix_ee_before_entry(void)
870 {
871 trace_hardirqs_on();
872
873 #ifdef CONFIG_PPC64
874 /*
875 * To avoid races, the caller must have gone directly from having
876 * interrupts fully-enabled to hard-disabled.
877 */
878 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
879
880 /* Only need to enable IRQs by hard enabling them after this */
881 local_paca->irq_happened = 0;
882 irq_soft_mask_set(IRQS_ENABLED);
883 #endif
884 }
885
kvmppc_get_ea_indexed(struct kvm_vcpu * vcpu,int ra,int rb)886 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
887 {
888 ulong ea;
889 ulong msr_64bit = 0;
890
891 ea = kvmppc_get_gpr(vcpu, rb);
892 if (ra)
893 ea += kvmppc_get_gpr(vcpu, ra);
894
895 #if defined(CONFIG_PPC_BOOK3E_64)
896 msr_64bit = MSR_CM;
897 #elif defined(CONFIG_PPC_BOOK3S_64)
898 msr_64bit = MSR_SF;
899 #endif
900
901 if (!(kvmppc_get_msr(vcpu) & msr_64bit))
902 ea = (uint32_t)ea;
903
904 return ea;
905 }
906
907 extern void xics_wake_cpu(int cpu);
908
909 #endif /* __POWERPC_KVM_PPC_H__ */
910
