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KVM: PPC: Book3S: Get/set guest SPRs using the GET/SET_ONE_REG interface
[linux-2.6-block.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
bbf45ba5
HB		 41enum emulation_result {
42 EMULATE_DONE, /* no further processing */
43 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
44 EMULATE_DO_DCR, /* kvm_run filled with DCR request */
45 EMULATE_FAIL, /* can't emulate this instruction */
37f5bca6 46 EMULATE_AGAIN, /* something went wrong. go again */
bbf45ba5
HB		 47};
48
df6909e5 49extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
bbf45ba5
HB		 50extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
51extern char kvmppc_handlers_start[];
52extern unsigned long kvmppc_handler_len;
29eb61bc 53extern void kvmppc_handler_highmem(void);
bbf45ba5
HB		 54
55extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
56extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
57 unsigned int rt, unsigned int bytes,
58 int is_bigendian);
3587d534
AG		 59extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
60 unsigned int rt, unsigned int bytes,
61 int is_bigendian);
bbf45ba5 62extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
b104d066 63 u64 val, unsigned int bytes, int is_bigendian);
bbf45ba5
HB		 64
65extern int kvmppc_emulate_instruction(struct kvm_run *run,
66 struct kvm_vcpu *vcpu);
ce263d70 67extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
75f74f0d 68extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
5ce941ee 69extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
dfd4d47e 70extern void kvmppc_decrementer_func(unsigned long data);
af8f38b3 71extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
f61c94bb
BB		 72extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
73extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
bbf45ba5 74
ecc0981f
HB		 75/* Core-specific hooks */
76
89168618 77extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
7924bd41 78 unsigned int gtlb_idx);
bbf45ba5 79extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
49dd2c49 80extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
ecc0981f 81extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
9cc5e953 82extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
fa86b8dd
HB		 83extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
84extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
be8d1cae
HB		 85extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
86 gva_t eaddr);
b52a638c
HB		 87extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
88extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
9dd921cf 89
db93f574
HB		 90extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
91 unsigned int id);
92extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
5cbb5106 93extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
9dd921cf 94extern int kvmppc_core_check_processor_compat(void);
5cbb5106
HB		 95extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
96 struct kvm_translation *tr);
9dd921cf
HB		 97
98extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
99extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
100
a8e4ef84 101extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
9dd921cf 102extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
25a8a02d 103extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
9dd921cf 104extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
7706664d 105extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
9dd921cf
HB		 106extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
107 struct kvm_interrupt *irq);
18978768
AG		 108extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
109 struct kvm_interrupt *irq);
862d31f7 110extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
9dd921cf 111
75f74f0d
HB		 112extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
113 unsigned int op, int *advance);
54771e62
AG		 114extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn,
115 ulong val);
116extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn,
117 ulong *val);
7c973a2e 118extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
75f74f0d 119
db93f574
HB		 120extern int kvmppc_booke_init(void);
121extern void kvmppc_booke_exit(void);
122
c30f8a6c 123extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
2a342ed5 124extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
a4cd8b23 125extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
c30f8a6c 126
32fad281
PM		 127extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp);
128extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp);
de56a948
PM		 129extern void kvmppc_free_hpt(struct kvm *kvm);
130extern long kvmppc_prepare_vrma(struct kvm *kvm,
131 struct kvm_userspace_memory_region *mem);
c77162de 132extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
da9d1d7f 133 struct kvm_memory_slot *memslot, unsigned long porder);
a8606e20 134extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
54738c09
DG		 135extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
136 struct kvm_create_spapr_tce *args);
f31e65e1
BH		 137extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
138 unsigned long ioba, unsigned long tce);
aa04b4cc
PM		 139extern long kvm_vm_ioctl_allocate_rma(struct kvm *kvm,
140 struct kvm_allocate_rma *rma);
b4e70611
AG		 141extern struct kvmppc_linear_info *kvm_alloc_rma(void);
142extern void kvm_release_rma(struct kvmppc_linear_info *ri);
d2a1b483
AG		 143extern struct kvmppc_linear_info *kvm_alloc_hpt(void);
144extern void kvm_release_hpt(struct kvmppc_linear_info *li);
f9e0554d
PM		 145extern int kvmppc_core_init_vm(struct kvm *kvm);
146extern void kvmppc_core_destroy_vm(struct kvm *kvm);
a66b48c3
PM		 147extern void kvmppc_core_free_memslot(struct kvm_memory_slot *free,
148 struct kvm_memory_slot *dont);
149extern int kvmppc_core_create_memslot(struct kvm_memory_slot *slot,
150 unsigned long npages);
f9e0554d 151extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
a66b48c3 152 struct kvm_memory_slot *memslot,
f9e0554d
PM		 153 struct kvm_userspace_memory_region *mem);
154extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
dfe49dbd
PM		 155 struct kvm_userspace_memory_region *mem,
156 struct kvm_memory_slot old);
5b74716e
BH		 157extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
158 struct kvm_ppc_smmu_info *info);
dfe49dbd
PM		 159extern void kvmppc_core_flush_memslot(struct kvm *kvm,
160 struct kvm_memory_slot *memslot);
f9e0554d 161
d30f6e48
SW		 162extern int kvmppc_bookehv_init(void);
163extern void kvmppc_bookehv_exit(void);
164
03d25c5b
AG		 165extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
166
0564ee8a
AG		 167/*
168 * Cuts out inst bits with ordering according to spec.
169 * That means the leftmost bit is zero. All given bits are included.
170 */
171static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
172{
173 u32 r;
174 u32 mask;
175
176 BUG_ON(msb > lsb);
177
178 mask = (1 << (lsb - msb + 1)) - 1;
179 r = (inst >> (63 - lsb)) & mask;
180
181 return r;
182}
183
184/*
185 * Replaces inst bits with ordering according to spec.
186 */
187static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
188{
189 u32 r;
190 u32 mask;
191
192 BUG_ON(msb > lsb);
193
194 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
195 r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
196
197 return r;
198}
199
a136a8bd
PM		 200union kvmppc_one_reg {
201 u32 wval;
202 u64 dval;
203};
204
205#define one_reg_size(id) \
206 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
207
208#define get_reg_val(id, reg) ({ \
209 union kvmppc_one_reg __u; \
210 switch (one_reg_size(id)) { \
211 case 4: __u.wval = (reg); break; \
212 case 8: __u.dval = (reg); break; \
213 default: BUG(); \
214 } \
215 __u; \
216})
217
218
219#define set_reg_val(id, val) ({ \
220 u64 __v; \
221 switch (one_reg_size(id)) { \
222 case 4: __v = (val).wval; break; \
223 case 8: __v = (val).dval; break; \
224 default: BUG(); \
225 } \
226 __v; \
227})
228
5ce941ee
SW		 229void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
230int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
231
232void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
233int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
234
31f3438e
PM		 235int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
236int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
a136a8bd
PM		 237int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
238int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
31f3438e 239
5ce941ee
SW		 240void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
241
371fefd6
PM		 242#ifdef CONFIG_KVM_BOOK3S_64_HV
243static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
244{
245 paca[cpu].kvm_hstate.xics_phys = addr;
246}
aa04b4cc 247
b4e70611 248extern void kvm_linear_init(void);
aa04b4cc 249
371fefd6
PM		 250#else
251static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
252{}
aa04b4cc 253
b4e70611 254static inline void kvm_linear_init(void)
aa04b4cc 255{}
371fefd6
PM		 256#endif
257
dc83b8bc
SW		 258int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
259 struct kvm_config_tlb *cfg);
260int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
261 struct kvm_dirty_tlb *cfg);
262
043cc4d7
SW		 263long kvmppc_alloc_lpid(void);
264void kvmppc_claim_lpid(long lpid);
265void kvmppc_free_lpid(long lpid);
266void kvmppc_init_lpid(unsigned long nr_lpids);
267
249ba1ee
AG		 268static inline void kvmppc_mmu_flush_icache(pfn_t pfn)
269{
270 /* Clear i-cache for new pages */
271 struct page *page;
272 page = pfn_to_page(pfn);
273 if (!test_bit(PG_arch_1, &page->flags)) {
274 flush_dcache_icache_page(page);
275 set_bit(PG_arch_1, &page->flags);
276 }
277}
278
bd2be683
AG		 279/* Please call after prepare_to_enter. This function puts the lazy ee state
280 back to normal mode, without actually enabling interrupts. */
281static inline void kvmppc_lazy_ee_enable(void)
282{
283#ifdef CONFIG_PPC64
284 /* Only need to enable IRQs by hard enabling them after this */
285 local_paca->irq_happened = 0;
286 local_paca->soft_enabled = 1;
287#endif
288}
249ba1ee 289
bbf45ba5 290#endif /* __POWERPC_KVM_PPC_H__ */
Linux 6.x block layer and io_uring tree(s)