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Linux 4.17-rc4
[linux-2.6-block.git] / arch / powerpc / include / asm / kvm_book3s.h
CommitLineData
4e342025
AG		 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 SUSE Linux Products GmbH 2009
16 *
17 * Authors: Alexander Graf <agraf@suse.de>
18 */
19
20#ifndef __ASM_KVM_BOOK3S_H__
21#define __ASM_KVM_BOOK3S_H__
22
23#include <linux/types.h>
24#include <linux/kvm_host.h>
2191d657 25#include <asm/kvm_book3s_asm.h>
4e342025 26
4e342025 27struct kvmppc_bat {
e15a1137 28 u64 raw;
4e342025
AG		 29 u32 bepi;
30 u32 bepi_mask;
4e342025
AG		 31 u32 brpn;
32 u8 wimg;
33 u8 pp;
3ed9c6d2
AG		 34 bool vs : 1;
35 bool vp : 1;
4e342025
AG		 36};
37
38struct kvmppc_sid_map {
39 u64 guest_vsid;
40 u64 guest_esid;
41 u64 host_vsid;
3ed9c6d2 42 bool valid : 1;
4e342025
AG		 43};
44
45#define SID_MAP_BITS 9
46#define SID_MAP_NUM (1 << SID_MAP_BITS)
47#define SID_MAP_MASK (SID_MAP_NUM - 1)
48
8b6db3bc
AG		 49#ifdef CONFIG_PPC_BOOK3S_64
50#define SID_CONTEXTS 1
51#else
52#define SID_CONTEXTS 128
53#define VSID_POOL_SIZE (SID_CONTEXTS * 16)
54#endif
55
c4befc58
PM		 56struct hpte_cache {
57 struct hlist_node list_pte;
58 struct hlist_node list_pte_long;
59 struct hlist_node list_vpte;
60 struct hlist_node list_vpte_long;
a4a0f252
PM		 61#ifdef CONFIG_PPC_BOOK3S_64
62 struct hlist_node list_vpte_64k;
63#endif
c4befc58 64 struct rcu_head rcu_head;
5524a27d 65 u64 host_vpn;
c4befc58
PM		 66 u64 pfn;
67 ulong slot;
68 struct kvmppc_pte pte;
c9029c34 69 int pagesize;
c4befc58
PM		 70};
71
e64fb7e2
SJS		 72/*
73 * Struct for a virtual core.
74 * Note: entry_exit_map combines a bitmap of threads that have entered
75 * in the bottom 8 bits and a bitmap of threads that have exited in the
76 * next 8 bits. This is so that we can atomically set the entry bit
77 * iff the exit map is 0 without taking a lock.
78 */
79struct kvmppc_vcore {
80 int n_runnable;
81 int num_threads;
82 int entry_exit_map;
83 int napping_threads;
84 int first_vcpuid;
85 u16 pcpu;
86 u16 last_cpu;
87 u8 vcore_state;
88 u8 in_guest;
7b5f8272 89 struct kvm_vcpu *runnable_threads[MAX_SMT_THREADS];
e64fb7e2
SJS		 90 struct list_head preempt_list;
91 spinlock_t lock;
92 struct swait_queue_head wq;
93 spinlock_t stoltb_lock; /* protects stolen_tb and preempt_tb */
94 u64 stolen_tb;
95 u64 preempt_tb;
96 struct kvm_vcpu *runner;
97 struct kvm *kvm;
98 u64 tb_offset; /* guest timebase - host timebase */
99 ulong lpcr;
100 u32 arch_compat;
101 ulong pcr;
102 ulong dpdes; /* doorbell state (POWER8) */
88b02cf9 103 ulong vtb; /* virtual timebase */
e64fb7e2 104 ulong conferring_threads;
0cda69dd 105 unsigned int halt_poll_ns;
e64fb7e2
SJS		 106};
107
4e342025 108struct kvmppc_vcpu_book3s {
4e342025 109 struct kvmppc_sid_map sid_map[SID_MAP_NUM];
4e342025
AG		 110 struct {
111 u64 esid;
112 u64 vsid;
113 } slb_shadow[64];
114 u8 slb_shadow_max;
4e342025
AG		 115 struct kvmppc_bat ibat[8];
116 struct kvmppc_bat dbat[8];
117 u64 hid[6];
d6d549b2 118 u64 gqr[8];
4e342025 119 u64 sdr1;
4e342025
AG		 120 u64 hior;
121 u64 msr_mask;
88b02cf9 122 u64 vtb;
8b6db3bc
AG		 123#ifdef CONFIG_PPC_BOOK3S_32
124 u32 vsid_pool[VSID_POOL_SIZE];
ffe36492 125 u32 vsid_next;
8b6db3bc 126#else
ffe36492
BH		 127 u64 proto_vsid_first;
128 u64 proto_vsid_max;
129 u64 proto_vsid_next;
8b6db3bc
AG		 130#endif
131 int context_id[SID_CONTEXTS];
c4befc58 132
1022fc3d
AG		 133 bool hior_explicit; /* HIOR is set by ioctl, not PVR */
134
c4befc58
PM		 135 struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE];
136 struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG];
137 struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
138 struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
a4a0f252
PM		 139#ifdef CONFIG_PPC_BOOK3S_64
140 struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K];
141#endif
c4befc58
PM		 142 int hpte_cache_count;
143 spinlock_t mmu_lock;
4e342025
AG		 144};
145
c9029c34
PM		 146#define VSID_REAL 0x07ffffffffc00000ULL
147#define VSID_BAT 0x07ffffffffb00000ULL
148#define VSID_64K 0x0800000000000000ULL
0f296829 149#define VSID_1T 0x1000000000000000ULL
f7bc74e1
AG		 150#define VSID_REAL_DR 0x2000000000000000ULL
151#define VSID_REAL_IR 0x4000000000000000ULL
5a1b419f 152#define VSID_PR 0x8000000000000000ULL
4e342025 153
af7b4d10 154extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
4e342025 155extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
af7b4d10 156extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
4e342025
AG		 157extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
158extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
159extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
de56a948 160extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
93b159b4
PM		 161extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
162 bool iswrite);
163extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
4e342025 164extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
0f296829 165extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
4e342025 166extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
697d3899
PM		 167extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
168 struct kvm_vcpu *vcpu, unsigned long addr,
169 unsigned long status);
170extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
171 unsigned long slb_v, unsigned long valid);
5a319350
PM		 172extern int kvmppc_hv_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu,
173 unsigned long gpa, gva_t ea, int is_store);
fef093be
AG		 174
175extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
176extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
d78bca72 177extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte);
fef093be
AG		 178extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
179extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
180extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
181extern int kvmppc_mmu_hpte_sysinit(void);
182extern void kvmppc_mmu_hpte_sysexit(void);
de56a948 183extern int kvmppc_mmu_hv_init(void);
ae2113a4 184extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc);
fef093be 185
5a319350
PM		 186extern int kvmppc_book3s_radix_page_fault(struct kvm_run *run,
187 struct kvm_vcpu *vcpu,
188 unsigned long ea, unsigned long dsisr);
9e04ba69
PM		 189extern int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
190 struct kvmppc_pte *gpte, bool data, bool iswrite);
8cf4ecc0 191extern int kvmppc_init_vm_radix(struct kvm *kvm);
5a319350
PM		 192extern void kvmppc_free_radix(struct kvm *kvm);
193extern int kvmppc_radix_init(void);
194extern void kvmppc_radix_exit(void);
01756099
PM		 195extern int kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
196 unsigned long gfn);
197extern int kvm_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
198 unsigned long gfn);
199extern int kvm_test_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
200 unsigned long gfn);
8f7b79b8
PM		 201extern long kvmppc_hv_get_dirty_log_radix(struct kvm *kvm,
202 struct kvm_memory_slot *memslot, unsigned long *map);
8cf4ecc0 203extern int kvmhv_get_rmmu_info(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
9e04ba69 204
35c4a733 205/* XXX remove this export when load_last_inst() is generic */
5467a97d 206extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
4e342025 207extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
bc5ad3f3
BH		 208extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
209 unsigned int vec);
de56a948 210extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
e15a1137
AG		 211extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
212 bool upper, u32 val);
aba3bd7f 213extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
831317b6 214extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
ba049e93
DW		 215extern kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa,
216 bool writing, bool *writable);
342d3db7
PM		 217extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
218 unsigned long *rmap, long pte_index, int realmode);
e641a317
PM		 219extern void kvmppc_update_dirty_map(struct kvm_memory_slot *memslot,
220 unsigned long gfn, unsigned long psize);
6f22bd32 221extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
342d3db7 222 unsigned long pte_index);
6f22bd32 223void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep,
55514893 224 unsigned long pte_index);
93e60249
PM		 225extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
226 unsigned long *nb_ret);
c35635ef
PM		 227extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr,
228 unsigned long gpa, bool dirty);
7ed661bf
PM		 229extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
230 long pte_index, unsigned long pteh, unsigned long ptel,
231 pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
6b445ad4
PM		 232extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
233 unsigned long pte_index, unsigned long avpn,
234 unsigned long *hpret);
8f7b79b8 235extern long kvmppc_hv_get_dirty_log_hpt(struct kvm *kvm,
dfe49dbd 236 struct kvm_memory_slot *memslot, unsigned long *map);
8f7b79b8
PM		 237extern void kvmppc_harvest_vpa_dirty(struct kvmppc_vpa *vpa,
238 struct kvm_memory_slot *memslot,
239 unsigned long *map);
a0144e2a
PM		 240extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr,
241 unsigned long mask);
8e6afa36 242extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr);
4e342025 243
4bb3c7a0
PM		 244extern int kvmhv_p9_tm_emulation_early(struct kvm_vcpu *vcpu);
245extern int kvmhv_p9_tm_emulation(struct kvm_vcpu *vcpu);
246extern void kvmhv_emulate_tm_rollback(struct kvm_vcpu *vcpu);
247
02143947 248extern void kvmppc_entry_trampoline(void);
de56a948 249extern void kvmppc_hv_entry_trampoline(void);
ca7f4203
AG		 250extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
251extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
0254f074 252extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
699a0ea0 253extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm);
ae2113a4
PM		 254extern int kvmppc_hcall_impl_pr(unsigned long cmd);
255extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd);
07ae5389
AG		 256extern void kvmppc_copy_to_svcpu(struct kvm_vcpu *vcpu);
257extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu);
644abbb2 258extern int kvm_irq_bypass;
4e342025
AG		 259
260static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
261{
3ff95502 262 return vcpu->arch.book3s;
4e342025
AG		 263}
264
de56a948
PM		 265/* Also add subarch specific defines */
266
267#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
268#include <asm/kvm_book3s_32.h>
269#endif
270#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
271#include <asm/kvm_book3s_64.h>
272#endif
273
c7f38f46
AG		 274static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
275{
a2d56020 276 vcpu->arch.gpr[num] = val;
c7f38f46
AG		 277}
278
279static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
280{
a2d56020 281 return vcpu->arch.gpr[num];
c7f38f46
AG		 282}
283
284static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
285{
a2d56020 286 vcpu->arch.cr = val;
c7f38f46
AG		 287}
288
289static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
290{
a2d56020 291 return vcpu->arch.cr;
c7f38f46
AG		 292}
293
c63517c2 294static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val)
c7f38f46 295{
a2d56020 296 vcpu->arch.xer = val;
c7f38f46
AG		 297}
298
c63517c2 299static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu)
c7f38f46 300{
a2d56020 301 return vcpu->arch.xer;
c7f38f46
AG		 302}
303
304static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
305{
a2d56020 306 vcpu->arch.ctr = val;
c7f38f46
AG		 307}
308
309static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
310{
a2d56020 311 return vcpu->arch.ctr;
c7f38f46
AG		 312}
313
314static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
315{
a2d56020 316 vcpu->arch.lr = val;
c7f38f46
AG		 317}
318
319static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
320{
a2d56020 321 return vcpu->arch.lr;
c7f38f46
AG		 322}
323
324static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
325{
a2d56020 326 vcpu->arch.pc = val;
c7f38f46
AG		 327}
328
329static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
330{
a2d56020 331 return vcpu->arch.pc;
c7f38f46
AG		 332}
333
5deb8e7a 334static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu);
73601775 335static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
c7f38f46 336{
5deb8e7a 337 return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE);
73601775 338}
c7f38f46 339
c7f38f46
AG		 340static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
341{
a2d56020
PM		 342 return vcpu->arch.fault_dar;
343}
344
e59d24e6
GK		 345static inline bool is_kvmppc_resume_guest(int r)
346{
347 return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
348}
349
c12fb43c
AG		 350static inline bool is_kvmppc_hv_enabled(struct kvm *kvm);
351static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu)
352{
353 /* Only PR KVM supports the magic page */
354 return !is_kvmppc_hv_enabled(vcpu->kvm);
355}
356
99342cf8
DG		 357extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu);
358extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu);
359
ad0a048b
AG		 360/* Magic register values loaded into r3 and r4 before the 'sc' assembly
361 * instruction for the OSI hypercalls */
362#define OSI_SC_MAGIC_R3 0x113724FA
363#define OSI_SC_MAGIC_R4 0x77810F9B
364
4e342025 365#define INS_DCBZ 0x7c0007ec
8c32a2ea
BB		 366/* TO = 31 for unconditional trap */
367#define INS_TW 0x7fe00008
4e342025 368
043cc4d7
SW		 369/* LPIDs we support with this build -- runtime limit may be lower */
370#define KVMPPC_NR_LPIDS (LPID_RSVD + 1)
371
c01e3f66
AG		 372#define SPLIT_HACK_MASK 0xff000000
373#define SPLIT_HACK_OFFS 0xfb000000
374
4e342025 375#endif /* __ASM_KVM_BOOK3S_H__ */
Linux 6.x block layer and io_uring tree(s)