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KVM: PPC: VFIO: Add in-kernel acceleration for VFIO
[mirror_ubuntu-zesty-kernel.git] / arch / powerpc / include / asm / kvm_ppc.h
CommitLineData
bbf45ba5
HB		 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>
a136a8bd 31#include <linux/bug.h>
1c0006d8
AG		 32#ifdef CONFIG_PPC_BOOK3S
33#include <asm/kvm_book3s.h>
c7f38f46
AG		 34#else
35#include <asm/kvm_booke.h>
1c0006d8 36#endif
371fefd6
PM		 37#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
38#include <asm/paca.h>
39#endif
bbf45ba5 40
a59c1d9e
MS		 41/*
42 * KVMPPC_INST_SW_BREAKPOINT is debug Instruction
43 * for supporting software breakpoint.
44 */
45#define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00
46
bbf45ba5
HB		 47enum emulation_result {
48 EMULATE_DONE, /* no further processing */
49 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
bbf45ba5 50 EMULATE_FAIL, /* can't emulate this instruction */
37f5bca6 51 EMULATE_AGAIN, /* something went wrong. go again */
c402a3f4 52 EMULATE_EXIT_USER, /* emulation requires exit to user-space */
bbf45ba5
HB		 53};
54
51f04726
MC		 55enum instruction_type {
56 INST_GENERIC,
57 INST_SC, /* system call */
58};
59
7d15c06f
AG		 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
df6909e5 70extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
bbf45ba5 71extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
29eb61bc 72extern void kvmppc_handler_highmem(void);
bbf45ba5
HB		 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,
73601775 77 int is_default_endian);
3587d534
AG		 78extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
79 unsigned int rt, unsigned int bytes,
73601775 80 int is_default_endian);
bbf45ba5 81extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
73601775
CLG		 82 u64 val, unsigned int bytes,
83 int is_default_endian);
bbf45ba5 84
51f04726
MC		 85extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
86 enum instruction_type type, u32 *inst);
87
35c4a733
AG		 88extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
89 bool data);
90extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
91 bool data);
bbf45ba5
HB		 92extern int kvmppc_emulate_instruction(struct kvm_run *run,
93 struct kvm_vcpu *vcpu);
d69614a2 94extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
ce263d70 95extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
75f74f0d 96extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
5ce941ee 97extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
d02d4d15 98extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
af8f38b3 99extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
f61c94bb
BB		 100extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
101extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
bbf45ba5 102
ecc0981f
HB		 103/* Core-specific hooks */
104
89168618 105extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
7924bd41 106 unsigned int gtlb_idx);
bbf45ba5 107extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
49dd2c49 108extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
ecc0981f 109extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
9cc5e953 110extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
fa86b8dd
HB		 111extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
112extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
be8d1cae
HB		 113extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
114 gva_t eaddr);
b52a638c
HB		 115extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
116extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
7d15c06f
AG		 117extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
118 enum xlate_instdata xlid, enum xlate_readwrite xlrw,
119 struct kvmppc_pte *pte);
9dd921cf 120
db93f574
HB		 121extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
122 unsigned int id);
123extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
5cbb5106 124extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
9dd921cf 125extern int kvmppc_core_check_processor_compat(void);
5cbb5106
HB		 126extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
127 struct kvm_translation *tr);
9dd921cf
HB		 128
129extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
130extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
131
a8e4ef84 132extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
9dd921cf 133extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
25a8a02d 134extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
9dd921cf 135extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
7706664d 136extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
9dd921cf
HB		 137extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
138 struct kvm_interrupt *irq);
4fe27d2a 139extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
8de12015
AG		 140extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags,
141 ulong esr_flags);
142extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
143 ulong dear_flags,
144 ulong esr_flags);
145extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu);
146extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
147 ulong esr_flags);
862d31f7 148extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
7c973a2e 149extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
75f74f0d 150
db93f574
HB		 151extern int kvmppc_booke_init(void);
152extern void kvmppc_booke_exit(void);
153
c30f8a6c 154extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
2a342ed5 155extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
a4cd8b23 156extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
c30f8a6c 157
32fad281
PM		 158extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp);
159extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp);
de56a948
PM		 160extern void kvmppc_free_hpt(struct kvm *kvm);
161extern long kvmppc_prepare_vrma(struct kvm *kvm,
162 struct kvm_userspace_memory_region *mem);
c77162de 163extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
da9d1d7f 164 struct kvm_memory_slot *memslot, unsigned long porder);
a8606e20 165extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
20464b9b
AK		 166extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
167 struct iommu_group *grp);
168extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
169 struct iommu_group *grp);
bc5ad3f3 170
54738c09 171extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
58ded420 172 struct kvm_create_spapr_tce_64 *args);
d3695aa4 173extern struct kvmppc_spapr_tce_table *kvmppc_find_table(
69e0373c 174 struct kvm *kvm, unsigned long liobn);
5ee7af18
AK		 175extern long kvmppc_ioba_validate(struct kvmppc_spapr_tce_table *stt,
176 unsigned long ioba, unsigned long npages);
177extern long kvmppc_tce_validate(struct kvmppc_spapr_tce_table *tt,
178 unsigned long tce);
d3695aa4
AK		 179extern long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa,
180 unsigned long *ua, unsigned long **prmap);
181extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt,
182 unsigned long idx, unsigned long tce);
f31e65e1
BH		 183extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
184 unsigned long ioba, unsigned long tce);
d3695aa4
AK		 185extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
186 unsigned long liobn, unsigned long ioba,
187 unsigned long tce_list, unsigned long npages);
188extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
189 unsigned long liobn, unsigned long ioba,
190 unsigned long tce_value, unsigned long npages);
69e9fbb2
LD		 191extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
192 unsigned long ioba);
fa61a4e3
AK		 193extern struct page *kvm_alloc_hpt(unsigned long nr_pages);
194extern void kvm_release_hpt(struct page *page, unsigned long nr_pages);
f9e0554d
PM		 195extern int kvmppc_core_init_vm(struct kvm *kvm);
196extern void kvmppc_core_destroy_vm(struct kvm *kvm);
5587027c
AK		 197extern void kvmppc_core_free_memslot(struct kvm *kvm,
198 struct kvm_memory_slot *free,
a66b48c3 199 struct kvm_memory_slot *dont);
5587027c
AK		 200extern int kvmppc_core_create_memslot(struct kvm *kvm,
201 struct kvm_memory_slot *slot,
a66b48c3 202 unsigned long npages);
f9e0554d 203extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
a66b48c3 204 struct kvm_memory_slot *memslot,
09170a49 205 const struct kvm_userspace_memory_region *mem);
f9e0554d 206extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
09170a49 207 const struct kvm_userspace_memory_region *mem,
f36f3f28
PB		 208 const struct kvm_memory_slot *old,
209 const struct kvm_memory_slot *new);
5b74716e
BH		 210extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
211 struct kvm_ppc_smmu_info *info);
dfe49dbd
PM		 212extern void kvmppc_core_flush_memslot(struct kvm *kvm,
213 struct kvm_memory_slot *memslot);
f9e0554d 214
d30f6e48
SW		 215extern int kvmppc_bookehv_init(void);
216extern void kvmppc_bookehv_exit(void);
217
03d25c5b
AG		 218extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
219
a2932923
PM		 220extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
221
5df554ad
SW		 222int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
223
8e591cb7
ME		 224extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
225extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
226extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
bc5ad3f3
BH		 227extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
228 u32 priority);
229extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
230 u32 *priority);
d19bd862
PM		 231extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
232extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
8e591cb7 233
2f699a59
BB		 234void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
235void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
236
3a167bea
AK		 237union kvmppc_one_reg {
238 u32 wval;
239 u64 dval;
240 vector128 vval;
241 u64 vsxval[2];
242 struct {
243 u64 addr;
244 u64 length;
245 } vpaval;
246};
247
248struct kvmppc_ops {
cbbc58d4 249 struct module *owner;
3a167bea
AK		 250 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
251 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
252 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
253 union kvmppc_one_reg *val);
254 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
255 union kvmppc_one_reg *val);
256 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
257 void (*vcpu_put)(struct kvm_vcpu *vcpu);
258 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
259 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
260 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
261 void (*vcpu_free)(struct kvm_vcpu *vcpu);
262 int (*check_requests)(struct kvm_vcpu *vcpu);
263 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
264 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
265 int (*prepare_memory_region)(struct kvm *kvm,
266 struct kvm_memory_slot *memslot,
09170a49 267 const struct kvm_userspace_memory_region *mem);
3a167bea 268 void (*commit_memory_region)(struct kvm *kvm,
09170a49 269 const struct kvm_userspace_memory_region *mem,
f36f3f28
PB		 270 const struct kvm_memory_slot *old,
271 const struct kvm_memory_slot *new);
3a167bea
AK		 272 int (*unmap_hva)(struct kvm *kvm, unsigned long hva);
273 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start,
274 unsigned long end);
57128468 275 int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end);
3a167bea
AK		 276 int (*test_age_hva)(struct kvm *kvm, unsigned long hva);
277 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte);
278 void (*mmu_destroy)(struct kvm_vcpu *vcpu);
279 void (*free_memslot)(struct kvm_memory_slot *free,
280 struct kvm_memory_slot *dont);
281 int (*create_memslot)(struct kvm_memory_slot *slot,
282 unsigned long npages);
283 int (*init_vm)(struct kvm *kvm);
284 void (*destroy_vm)(struct kvm *kvm);
3a167bea
AK		 285 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
286 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu,
287 unsigned int inst, int *advance);
288 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
289 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
290 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
291 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
292 unsigned long arg);
ae2113a4 293 int (*hcall_implemented)(unsigned long hcall);
9576730d
SW		 294 int (*irq_bypass_add_producer)(struct irq_bypass_consumer *,
295 struct irq_bypass_producer *);
296 void (*irq_bypass_del_producer)(struct irq_bypass_consumer *,
297 struct irq_bypass_producer *);
d046dddb
PM		 298 int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg);
299 int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
3a167bea
AK		 300};
301
cbbc58d4
AK		 302extern struct kvmppc_ops *kvmppc_hv_ops;
303extern struct kvmppc_ops *kvmppc_pr_ops;
3a167bea 304
51f04726
MC		 305static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
306 enum instruction_type type, u32 *inst)
307{
308 int ret = EMULATE_DONE;
309 u32 fetched_inst;
310
311 /* Load the instruction manually if it failed to do so in the
312 * exit path */
313 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
314 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
315
316 /* Write fetch_failed unswapped if the fetch failed */
317 if (ret == EMULATE_DONE)
318 fetched_inst = kvmppc_need_byteswap(vcpu) ?
319 swab32(vcpu->arch.last_inst) :
320 vcpu->arch.last_inst;
321 else
322 fetched_inst = vcpu->arch.last_inst;
323
324 *inst = fetched_inst;
325 return ret;
326}
327
a78b55d1
AK		 328static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
329{
330 return kvm->arch.kvm_ops == kvmppc_hv_ops;
331}
332
e928e9cb
ME		 333extern int kvmppc_hwrng_present(void);
334
0564ee8a
AG		 335/*
336 * Cuts out inst bits with ordering according to spec.
337 * That means the leftmost bit is zero. All given bits are included.
338 */
339static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
340{
341 u32 r;
342 u32 mask;
343
344 BUG_ON(msb > lsb);
345
346 mask = (1 << (lsb - msb + 1)) - 1;
347 r = (inst >> (63 - lsb)) & mask;
348
349 return r;
350}
351
352/*
353 * Replaces inst bits with ordering according to spec.
354 */
355static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
356{
357 u32 r;
358 u32 mask;
359
360 BUG_ON(msb > lsb);
361
362 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
363 r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
364
365 return r;
366}
367
a136a8bd
PM		 368#define one_reg_size(id) \
369 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
370
371#define get_reg_val(id, reg) ({ \
372 union kvmppc_one_reg __u; \
373 switch (one_reg_size(id)) { \
374 case 4: __u.wval = (reg); break; \
375 case 8: __u.dval = (reg); break; \
376 default: BUG(); \
377 } \
378 __u; \
379})
380
381
382#define set_reg_val(id, val) ({ \
383 u64 __v; \
384 switch (one_reg_size(id)) { \
385 case 4: __v = (val).wval; break; \
386 case 8: __v = (val).dval; break; \
387 default: BUG(); \
388 } \
389 __v; \
390})
391
3a167bea 392int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
5ce941ee
SW		 393int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
394
3a167bea 395int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
5ce941ee
SW		 396int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
397
31f3438e
PM		 398int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
399int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
a136a8bd
PM		 400int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
401int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
31f3438e 402
5ce941ee
SW		 403void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
404
5df554ad 405struct openpic;
5df554ad 406
9975f5e3 407#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
fa61a4e3 408extern void kvm_cma_reserve(void) __init;
371fefd6
PM		 409static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
410{
411 paca[cpu].kvm_hstate.xics_phys = addr;
412}
aa04b4cc 413
54695c30
BH		 414static inline u32 kvmppc_get_xics_latch(void)
415{
699cc876 416 u32 xirr;
54695c30 417
699cc876 418 xirr = get_paca()->kvm_hstate.saved_xirr;
54695c30 419 get_paca()->kvm_hstate.saved_xirr = 0;
54695c30
BH		 420 return xirr;
421}
422
423static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
424{
425 paca[cpu].kvm_hstate.host_ipi = host_ipi;
426}
427
3a167bea
AK		 428static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
429{
cbbc58d4 430 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
3a167bea 431}
aa04b4cc 432
441c19c8
ME		 433extern void kvm_hv_vm_activated(void);
434extern void kvm_hv_vm_deactivated(void);
435extern bool kvm_hv_mode_active(void);
436
371fefd6 437#else
fa61a4e3
AK		 438static inline void __init kvm_cma_reserve(void)
439{}
440
371fefd6
PM		 441static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
442{}
aa04b4cc 443
54695c30
BH		 444static inline u32 kvmppc_get_xics_latch(void)
445{
446 return 0;
447}
448
449static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
450{}
451
452static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
453{
454 kvm_vcpu_kick(vcpu);
455}
441c19c8
ME		 456
457static inline bool kvm_hv_mode_active(void) { return false; }
458
bc5ad3f3
BH		 459#endif
460
461#ifdef CONFIG_KVM_XICS
462static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
463{
464 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
465}
8daaafc8
SW		 466
467static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
468 struct kvm *kvm)
469{
644abbb2 470 if (kvm && kvm_irq_bypass)
8daaafc8
SW		 471 return kvm->arch.pimap;
472 return NULL;
473}
474
79b6c247
SW		 475extern void kvmppc_alloc_host_rm_ops(void);
476extern void kvmppc_free_host_rm_ops(void);
8daaafc8 477extern void kvmppc_free_pimap(struct kvm *kvm);
f7af5209 478extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall);
bc5ad3f3
BH		 479extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
480extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server);
481extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args);
482extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
8b78645c
PM		 483extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
484extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
5975a2e0
PM		 485extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
486 struct kvm_vcpu *vcpu, u32 cpu);
0c2a6606 487extern void kvmppc_xics_ipi_action(void);
5d375199
PM		 488extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq,
489 unsigned long host_irq);
490extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
491 unsigned long host_irq);
f725758b
PM		 492extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr,
493 struct kvmppc_irq_map *irq_map,
494 struct kvmppc_passthru_irqmap *pimap,
495 bool *again);
520fe9c6 496extern int h_ipi_redirect;
bc5ad3f3 497#else
8daaafc8
SW		 498static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
499 struct kvm *kvm)
500 { return NULL; }
79b6c247
SW		 501static inline void kvmppc_alloc_host_rm_ops(void) {};
502static inline void kvmppc_free_host_rm_ops(void) {};
8daaafc8 503static inline void kvmppc_free_pimap(struct kvm *kvm) {};
f7af5209
SW		 504static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall)
505 { return 0; }
bc5ad3f3
BH		 506static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
507 { return 0; }
508static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
509static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu,
510 unsigned long server)
511 { return -EINVAL; }
512static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm,
513 struct kvm_irq_level *args)
514 { return -ENOTTY; }
515static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
516 { return 0; }
371fefd6
PM		 517#endif
518
e34af784
PM		 519/*
520 * Prototypes for functions called only from assembler code.
521 * Having prototypes reduces sparse errors.
522 */
523long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
524 unsigned long ioba, unsigned long tce);
525long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
526 unsigned long liobn, unsigned long ioba,
527 unsigned long tce_list, unsigned long npages);
528long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
529 unsigned long liobn, unsigned long ioba,
530 unsigned long tce_value, unsigned long npages);
531long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target,
532 unsigned int yield_count);
533long kvmppc_h_random(struct kvm_vcpu *vcpu);
534void kvmhv_commence_exit(int trap);
535long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu);
536void kvmppc_subcore_enter_guest(void);
537void kvmppc_subcore_exit_guest(void);
538long kvmppc_realmode_hmi_handler(void);
539long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
540 long pte_index, unsigned long pteh, unsigned long ptel);
541long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
542 unsigned long pte_index, unsigned long avpn);
543long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu);
544long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
545 unsigned long pte_index, unsigned long avpn,
546 unsigned long va);
547long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
548 unsigned long pte_index);
549long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
550 unsigned long pte_index);
551long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
552 unsigned long pte_index);
553long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr,
554 unsigned long slb_v, unsigned int status, bool data);
555unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu);
556int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server,
557 unsigned long mfrr);
558int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr);
559int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr);
560
79b6c247
SW		 561/*
562 * Host-side operations we want to set up while running in real
563 * mode in the guest operating on the xics.
564 * Currently only VCPU wakeup is supported.
565 */
566
567union kvmppc_rm_state {
568 unsigned long raw;
569 struct {
570 u32 in_host;
571 u32 rm_action;
572 };
573};
574
575struct kvmppc_host_rm_core {
576 union kvmppc_rm_state rm_state;
577 void *rm_data;
578 char pad[112];
579};
580
581struct kvmppc_host_rm_ops {
582 struct kvmppc_host_rm_core *rm_core;
583 void (*vcpu_kick)(struct kvm_vcpu *vcpu);
584};
585
586extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv;
587
34f754b9
BB		 588static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
589{
590#ifdef CONFIG_KVM_BOOKE_HV
591 return mfspr(SPRN_GEPR);
592#elif defined(CONFIG_BOOKE)
593 return vcpu->arch.epr;
594#else
595 return 0;
596#endif
597}
598
1c810636
AG		 599static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
600{
601#ifdef CONFIG_KVM_BOOKE_HV
602 mtspr(SPRN_GEPR, epr);
603#elif defined(CONFIG_BOOKE)
604 vcpu->arch.epr = epr;
605#endif
606}
607
5df554ad
SW		 608#ifdef CONFIG_KVM_MPIC
609
610void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
eb1e4f43
SW		 611int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
612 u32 cpu);
613void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
5df554ad
SW		 614
615#else
616
617static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
618{
619}
620
eb1e4f43
SW		 621static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
622 struct kvm_vcpu *vcpu, u32 cpu)
623{
624 return -EINVAL;
625}
626
627static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
628 struct kvm_vcpu *vcpu)
629{
630}
631
5df554ad
SW		 632#endif /* CONFIG_KVM_MPIC */
633
dc83b8bc
SW		 634int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
635 struct kvm_config_tlb *cfg);
636int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
637 struct kvm_dirty_tlb *cfg);
638
043cc4d7
SW		 639long kvmppc_alloc_lpid(void);
640void kvmppc_claim_lpid(long lpid);
641void kvmppc_free_lpid(long lpid);
642void kvmppc_init_lpid(unsigned long nr_lpids);
643
ba049e93 644static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn)
249ba1ee 645{
249ba1ee 646 struct page *page;
adccf65c
BB		 647 /*
648 * We can only access pages that the kernel maps
649 * as memory. Bail out for unmapped ones.
650 */
651 if (!pfn_valid(pfn))
652 return;
653
654 /* Clear i-cache for new pages */
249ba1ee
AG		 655 page = pfn_to_page(pfn);
656 if (!test_bit(PG_arch_1, &page->flags)) {
657 flush_dcache_icache_page(page);
658 set_bit(PG_arch_1, &page->flags);
659 }
660}
661
5deb8e7a
AG		 662/*
663 * Shared struct helpers. The shared struct can be little or big endian,
664 * depending on the guest endianness. So expose helpers to all of them.
665 */
666static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
667{
668#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
669 /* Only Book3S_64 PR supports bi-endian for now */
670 return vcpu->arch.shared_big_endian;
671#elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
672 /* Book3s_64 HV on little endian is always little endian */
673 return false;
674#else
675 return true;
676#endif
677}
678
5a484c7c 679#define SPRNG_WRAPPER_GET(reg, bookehv_spr) \
1dc0c5b8
BB		 680static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
681{ \
5a484c7c 682 return mfspr(bookehv_spr); \
1dc0c5b8
BB		 683} \
684
5a484c7c 685#define SPRNG_WRAPPER_SET(reg, bookehv_spr) \
1dc0c5b8
BB		 686static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \
687{ \
5a484c7c 688 mtspr(bookehv_spr, val); \
1dc0c5b8
BB		 689} \
690
5deb8e7a 691#define SHARED_WRAPPER_GET(reg, size) \
1dc0c5b8 692static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
5deb8e7a
AG		 693{ \
694 if (kvmppc_shared_big_endian(vcpu)) \
695 return be##size##_to_cpu(vcpu->arch.shared->reg); \
696 else \
697 return le##size##_to_cpu(vcpu->arch.shared->reg); \
698} \
699
700#define SHARED_WRAPPER_SET(reg, size) \
701static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
702{ \
703 if (kvmppc_shared_big_endian(vcpu)) \
704 vcpu->arch.shared->reg = cpu_to_be##size(val); \
705 else \
706 vcpu->arch.shared->reg = cpu_to_le##size(val); \
707} \
708
709#define SHARED_WRAPPER(reg, size) \
710 SHARED_WRAPPER_GET(reg, size) \
711 SHARED_WRAPPER_SET(reg, size) \
712
5a484c7c
BB		 713#define SPRNG_WRAPPER(reg, bookehv_spr) \
714 SPRNG_WRAPPER_GET(reg, bookehv_spr) \
715 SPRNG_WRAPPER_SET(reg, bookehv_spr) \
1dc0c5b8
BB		 716
717#ifdef CONFIG_KVM_BOOKE_HV
718
5a484c7c
BB		 719#define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
720 SPRNG_WRAPPER(reg, bookehv_spr) \
1dc0c5b8
BB		 721
722#else
723
5a484c7c 724#define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \
1dc0c5b8
BB		 725 SHARED_WRAPPER(reg, size) \
726
727#endif
728
5deb8e7a 729SHARED_WRAPPER(critical, 64)
1dc0c5b8
BB		 730SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
731SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
732SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
733SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
734SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
735SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
736SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
dc168549 737SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
5deb8e7a
AG		 738SHARED_WRAPPER_GET(msr, 64)
739static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
740{
741 if (kvmppc_shared_big_endian(vcpu))
742 vcpu->arch.shared->msr = cpu_to_be64(val);
743 else
744 vcpu->arch.shared->msr = cpu_to_le64(val);
745}
746SHARED_WRAPPER(dsisr, 32)
747SHARED_WRAPPER(int_pending, 32)
748SHARED_WRAPPER(sprg4, 64)
749SHARED_WRAPPER(sprg5, 64)
750SHARED_WRAPPER(sprg6, 64)
751SHARED_WRAPPER(sprg7, 64)
752
753static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
754{
755 if (kvmppc_shared_big_endian(vcpu))
756 return be32_to_cpu(vcpu->arch.shared->sr[nr]);
757 else
758 return le32_to_cpu(vcpu->arch.shared->sr[nr]);
759}
760
761static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
762{
763 if (kvmppc_shared_big_endian(vcpu))
764 vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
765 else
766 vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
767}
768
5f1c248f
SW		 769/*
770 * Please call after prepare_to_enter. This function puts the lazy ee and irq
771 * disabled tracking state back to normal mode, without actually enabling
772 * interrupts.
773 */
774static inline void kvmppc_fix_ee_before_entry(void)
bd2be683 775{
5f1c248f
SW		 776 trace_hardirqs_on();
777
bd2be683 778#ifdef CONFIG_PPC64
6c85f52b
SW		 779 /*
780 * To avoid races, the caller must have gone directly from having
781 * interrupts fully-enabled to hard-disabled.
782 */
783 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
784
bd2be683
AG		 785 /* Only need to enable IRQs by hard enabling them after this */
786 local_paca->irq_happened = 0;
787 local_paca->soft_enabled = 1;
788#endif
789}
249ba1ee 790
7cdd7a95
MC		 791static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
792{
793 ulong ea;
8823a8fd 794 ulong msr_64bit = 0;
7cdd7a95
MC		 795
796 ea = kvmppc_get_gpr(vcpu, rb);
797 if (ra)
798 ea += kvmppc_get_gpr(vcpu, ra);
799
8823a8fd
MC		 800#if defined(CONFIG_PPC_BOOK3E_64)
801 msr_64bit = MSR_CM;
802#elif defined(CONFIG_PPC_BOOK3S_64)
803 msr_64bit = MSR_SF;
804#endif
805
5deb8e7a 806 if (!(kvmppc_get_msr(vcpu) & msr_64bit))
8823a8fd
MC		 807 ea = (uint32_t)ea;
808
7cdd7a95
MC		 809 return ea;
810}
811
54695c30
BH		 812extern void xics_wake_cpu(int cpu);
813
bbf45ba5 814#endif /* __POWERPC_KVM_PPC_H__ */
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