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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
4 *
5 * Author: Yu Liu <yu.liu@freescale.com>
6 * Scott Wood <scottwood@freescale.com>
7 * Ashish Kalra <ashish.kalra@freescale.com>
8 * Varun Sethi <varun.sethi@freescale.com>
9 *
10 * Description:
11 * This file is based on arch/powerpc/kvm/44x_tlb.h and
12 * arch/powerpc/include/asm/kvm_44x.h by Hollis Blanchard <hollisb@us.ibm.com>,
13 * Copyright IBM Corp. 2007-2008
14 */
15
16#ifndef KVM_E500_H
17#define KVM_E500_H
18
19#include <linux/kvm_host.h>
20#include <asm/nohash/mmu-e500.h>
21#include <asm/tlb.h>
22#include <asm/cputhreads.h>
23
24enum vcpu_ftr {
25 VCPU_FTR_MMU_V2
26};
27
28#define E500_PID_NUM 3
29#define E500_TLB_NUM 2
30
31/* entry is mapped somewhere in host TLB */
32#define E500_TLB_VALID (1 << 31)
33/* TLB1 entry is mapped by host TLB1, tracked by bitmaps */
34#define E500_TLB_BITMAP (1 << 30)
35/* TLB1 entry is mapped by host TLB0 */
36#define E500_TLB_TLB0 (1 << 29)
37/* bits [6-5] MAS2_X1 and MAS2_X0 and [4-0] bits for WIMGE */
38#define E500_TLB_MAS2_ATTR (0x7f)
39
40struct tlbe_ref {
41 kvm_pfn_t pfn; /* valid only for TLB0, except briefly */
42 unsigned int flags; /* E500_TLB_* */
43};
44
45struct tlbe_priv {
46 struct tlbe_ref ref;
47};
48
49#ifdef CONFIG_KVM_E500V2
50struct vcpu_id_table;
51#endif
52
53struct kvmppc_e500_tlb_params {
54 int entries, ways, sets;
55};
56
57struct kvmppc_vcpu_e500 {
58 struct kvm_vcpu vcpu;
59
60 /* Unmodified copy of the guest's TLB -- shared with host userspace. */
61 struct kvm_book3e_206_tlb_entry *gtlb_arch;
62
63 /* Starting entry number in gtlb_arch[] */
64 int gtlb_offset[E500_TLB_NUM];
65
66 /* KVM internal information associated with each guest TLB entry */
67 struct tlbe_priv *gtlb_priv[E500_TLB_NUM];
68
69 struct kvmppc_e500_tlb_params gtlb_params[E500_TLB_NUM];
70
71 unsigned int gtlb_nv[E500_TLB_NUM];
72
73 unsigned int host_tlb1_nv;
74
75 u32 svr;
76 u32 l1csr0;
77 u32 l1csr1;
78 u32 hid0;
79 u32 hid1;
80 u64 mcar;
81
82 struct page **shared_tlb_pages;
83 int num_shared_tlb_pages;
84
85 u64 *g2h_tlb1_map;
86 unsigned int *h2g_tlb1_rmap;
87
88 /* Minimum and maximum address mapped my TLB1 */
89 unsigned long tlb1_min_eaddr;
90 unsigned long tlb1_max_eaddr;
91
92#ifdef CONFIG_KVM_E500V2
93 u32 pid[E500_PID_NUM];
94
95 /* vcpu id table */
96 struct vcpu_id_table *idt;
97#endif
98};
99
100static inline struct kvmppc_vcpu_e500 *to_e500(struct kvm_vcpu *vcpu)
101{
102 return container_of(vcpu, struct kvmppc_vcpu_e500, vcpu);
103}
104
105
106/* This geometry is the legacy default -- can be overridden by userspace */
107#define KVM_E500_TLB0_WAY_SIZE 128
108#define KVM_E500_TLB0_WAY_NUM 2
109
110#define KVM_E500_TLB0_SIZE (KVM_E500_TLB0_WAY_SIZE * KVM_E500_TLB0_WAY_NUM)
111#define KVM_E500_TLB1_SIZE 16
112
113#define index_of(tlbsel, esel) (((tlbsel) << 16) | ((esel) & 0xFFFF))
114#define tlbsel_of(index) ((index) >> 16)
115#define esel_of(index) ((index) & 0xFFFF)
116
117#define E500_TLB_USER_PERM_MASK (MAS3_UX|MAS3_UR|MAS3_UW)
118#define E500_TLB_SUPER_PERM_MASK (MAS3_SX|MAS3_SR|MAS3_SW)
119#define MAS2_ATTRIB_MASK \
120 (MAS2_X0 | MAS2_X1 | MAS2_E | MAS2_G)
121#define MAS3_ATTRIB_MASK \
122 (MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3 \
123 | E500_TLB_USER_PERM_MASK | E500_TLB_SUPER_PERM_MASK)
124
125int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500,
126 ulong value);
127int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu);
128int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu);
129int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, gva_t ea);
130int kvmppc_e500_emul_tlbilx(struct kvm_vcpu *vcpu, int type, gva_t ea);
131int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, gva_t ea);
132int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500);
133void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500);
134
135void kvmppc_get_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
136int kvmppc_set_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
137
138int kvmppc_get_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id,
139 union kvmppc_one_reg *val);
140int kvmppc_set_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id,
141 union kvmppc_one_reg *val);
142
143#ifdef CONFIG_KVM_E500V2
144unsigned int kvmppc_e500_get_sid(struct kvmppc_vcpu_e500 *vcpu_e500,
145 unsigned int as, unsigned int gid,
146 unsigned int pr, int avoid_recursion);
147#endif
148
149/* TLB helper functions */
150static inline unsigned int
151get_tlb_size(const struct kvm_book3e_206_tlb_entry *tlbe)
152{
153 return (tlbe->mas1 >> 7) & 0x1f;
154}
155
156static inline gva_t get_tlb_eaddr(const struct kvm_book3e_206_tlb_entry *tlbe)
157{
158 return tlbe->mas2 & MAS2_EPN;
159}
160
161static inline u64 get_tlb_bytes(const struct kvm_book3e_206_tlb_entry *tlbe)
162{
163 unsigned int pgsize = get_tlb_size(tlbe);
164 return 1ULL << 10 << pgsize;
165}
166
167static inline gva_t get_tlb_end(const struct kvm_book3e_206_tlb_entry *tlbe)
168{
169 u64 bytes = get_tlb_bytes(tlbe);
170 return get_tlb_eaddr(tlbe) + bytes - 1;
171}
172
173static inline u64 get_tlb_raddr(const struct kvm_book3e_206_tlb_entry *tlbe)
174{
175 return tlbe->mas7_3 & ~0xfffULL;
176}
177
178static inline unsigned int
179get_tlb_tid(const struct kvm_book3e_206_tlb_entry *tlbe)
180{
181 return (tlbe->mas1 >> 16) & 0xff;
182}
183
184static inline unsigned int
185get_tlb_ts(const struct kvm_book3e_206_tlb_entry *tlbe)
186{
187 return (tlbe->mas1 >> 12) & 0x1;
188}
189
190static inline unsigned int
191get_tlb_v(const struct kvm_book3e_206_tlb_entry *tlbe)
192{
193 return (tlbe->mas1 >> 31) & 0x1;
194}
195
196static inline unsigned int
197get_tlb_iprot(const struct kvm_book3e_206_tlb_entry *tlbe)
198{
199 return (tlbe->mas1 >> 30) & 0x1;
200}
201
202static inline unsigned int
203get_tlb_tsize(const struct kvm_book3e_206_tlb_entry *tlbe)
204{
205 return (tlbe->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
206}
207
208static inline unsigned int get_cur_pid(struct kvm_vcpu *vcpu)
209{
210 return vcpu->arch.pid & 0xff;
211}
212
213static inline unsigned int get_cur_as(struct kvm_vcpu *vcpu)
214{
215 return !!(vcpu->arch.shared->msr & (MSR_IS | MSR_DS));
216}
217
218static inline unsigned int get_cur_pr(struct kvm_vcpu *vcpu)
219{
220 return !!(vcpu->arch.shared->msr & MSR_PR);
221}
222
223static inline unsigned int get_cur_spid(const struct kvm_vcpu *vcpu)
224{
225 return (vcpu->arch.shared->mas6 >> 16) & 0xff;
226}
227
228static inline unsigned int get_cur_sas(const struct kvm_vcpu *vcpu)
229{
230 return vcpu->arch.shared->mas6 & 0x1;
231}
232
233static inline unsigned int get_tlb_tlbsel(const struct kvm_vcpu *vcpu)
234{
235 /*
236 * Manual says that tlbsel has 2 bits wide.
237 * Since we only have two TLBs, only lower bit is used.
238 */
239 return (vcpu->arch.shared->mas0 >> 28) & 0x1;
240}
241
242static inline unsigned int get_tlb_nv_bit(const struct kvm_vcpu *vcpu)
243{
244 return vcpu->arch.shared->mas0 & 0xfff;
245}
246
247static inline unsigned int get_tlb_esel_bit(const struct kvm_vcpu *vcpu)
248{
249 return (vcpu->arch.shared->mas0 >> 16) & 0xfff;
250}
251
252static inline int tlbe_is_host_safe(const struct kvm_vcpu *vcpu,
253 const struct kvm_book3e_206_tlb_entry *tlbe)
254{
255 gpa_t gpa;
256
257 if (!get_tlb_v(tlbe))
258 return 0;
259
260#ifndef CONFIG_KVM_BOOKE_HV
261 /* Does it match current guest AS? */
262 /* XXX what about IS != DS? */
263 if (get_tlb_ts(tlbe) != !!(vcpu->arch.shared->msr & MSR_IS))
264 return 0;
265#endif
266
267 gpa = get_tlb_raddr(tlbe);
268 if (!gfn_to_memslot(vcpu->kvm, gpa >> PAGE_SHIFT))
269 /* Mapping is not for RAM. */
270 return 0;
271
272 return 1;
273}
274
275static inline struct kvm_book3e_206_tlb_entry *get_entry(
276 struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel, int entry)
277{
278 int offset = vcpu_e500->gtlb_offset[tlbsel];
279 return &vcpu_e500->gtlb_arch[offset + entry];
280}
281
282void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500,
283 struct kvm_book3e_206_tlb_entry *gtlbe);
284void kvmppc_e500_tlbil_all(struct kvmppc_vcpu_e500 *vcpu_e500);
285
286#ifdef CONFIG_KVM_BOOKE_HV
287#define kvmppc_e500_get_tlb_stid(vcpu, gtlbe) get_tlb_tid(gtlbe)
288#define get_tlbmiss_tid(vcpu) get_cur_pid(vcpu)
289#define get_tlb_sts(gtlbe) (gtlbe->mas1 & MAS1_TS)
290
291/*
292 * These functions should be called with preemption disabled
293 * and the returned value is valid only in that context
294 */
295static inline int get_thread_specific_lpid(int vm_lpid)
296{
297 int vcpu_lpid = vm_lpid;
298
299 if (threads_per_core == 2)
300 vcpu_lpid |= smp_processor_id() & 1;
301
302 return vcpu_lpid;
303}
304
305static inline int get_lpid(struct kvm_vcpu *vcpu)
306{
307 return get_thread_specific_lpid(vcpu->kvm->arch.lpid);
308}
309#else
310unsigned int kvmppc_e500_get_tlb_stid(struct kvm_vcpu *vcpu,
311 struct kvm_book3e_206_tlb_entry *gtlbe);
312
313static inline unsigned int get_tlbmiss_tid(struct kvm_vcpu *vcpu)
314{
315 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
316 unsigned int tidseld = (vcpu->arch.shared->mas4 >> 16) & 0xf;
317
318 return vcpu_e500->pid[tidseld];
319}
320
321/* Force TS=1 for all guest mappings. */
322#define get_tlb_sts(gtlbe) (MAS1_TS)
323#endif /* !BOOKE_HV */
324
325static inline bool has_feature(const struct kvm_vcpu *vcpu,
326 enum vcpu_ftr ftr)
327{
328 bool has_ftr;
329 switch (ftr) {
330 case VCPU_FTR_MMU_V2:
331 has_ftr = ((vcpu->arch.mmucfg & MMUCFG_MAVN) == MMUCFG_MAVN_V2);
332 break;
333 default:
334 return false;
335 }
336 return has_ftr;
337}
338
339#endif /* KVM_E500_H */
1/*
2 * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
3 *
4 * Author: Yu Liu <yu.liu@freescale.com>
5 * Scott Wood <scottwood@freescale.com>
6 * Ashish Kalra <ashish.kalra@freescale.com>
7 * Varun Sethi <varun.sethi@freescale.com>
8 *
9 * Description:
10 * This file is based on arch/powerpc/kvm/44x_tlb.h and
11 * arch/powerpc/include/asm/kvm_44x.h by Hollis Blanchard <hollisb@us.ibm.com>,
12 * Copyright IBM Corp. 2007-2008
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License, version 2, as
16 * published by the Free Software Foundation.
17 */
18
19#ifndef KVM_E500_H
20#define KVM_E500_H
21
22#include <linux/kvm_host.h>
23#include <asm/mmu-book3e.h>
24#include <asm/tlb.h>
25#include <asm/cputhreads.h>
26
27enum vcpu_ftr {
28 VCPU_FTR_MMU_V2
29};
30
31#define E500_PID_NUM 3
32#define E500_TLB_NUM 2
33
34/* entry is mapped somewhere in host TLB */
35#define E500_TLB_VALID (1 << 31)
36/* TLB1 entry is mapped by host TLB1, tracked by bitmaps */
37#define E500_TLB_BITMAP (1 << 30)
38/* TLB1 entry is mapped by host TLB0 */
39#define E500_TLB_TLB0 (1 << 29)
40/* bits [6-5] MAS2_X1 and MAS2_X0 and [4-0] bits for WIMGE */
41#define E500_TLB_MAS2_ATTR (0x7f)
42
43struct tlbe_ref {
44 kvm_pfn_t pfn; /* valid only for TLB0, except briefly */
45 unsigned int flags; /* E500_TLB_* */
46};
47
48struct tlbe_priv {
49 struct tlbe_ref ref;
50};
51
52#ifdef CONFIG_KVM_E500V2
53struct vcpu_id_table;
54#endif
55
56struct kvmppc_e500_tlb_params {
57 int entries, ways, sets;
58};
59
60struct kvmppc_vcpu_e500 {
61 struct kvm_vcpu vcpu;
62
63 /* Unmodified copy of the guest's TLB -- shared with host userspace. */
64 struct kvm_book3e_206_tlb_entry *gtlb_arch;
65
66 /* Starting entry number in gtlb_arch[] */
67 int gtlb_offset[E500_TLB_NUM];
68
69 /* KVM internal information associated with each guest TLB entry */
70 struct tlbe_priv *gtlb_priv[E500_TLB_NUM];
71
72 struct kvmppc_e500_tlb_params gtlb_params[E500_TLB_NUM];
73
74 unsigned int gtlb_nv[E500_TLB_NUM];
75
76 unsigned int host_tlb1_nv;
77
78 u32 svr;
79 u32 l1csr0;
80 u32 l1csr1;
81 u32 hid0;
82 u32 hid1;
83 u64 mcar;
84
85 struct page **shared_tlb_pages;
86 int num_shared_tlb_pages;
87
88 u64 *g2h_tlb1_map;
89 unsigned int *h2g_tlb1_rmap;
90
91 /* Minimum and maximum address mapped my TLB1 */
92 unsigned long tlb1_min_eaddr;
93 unsigned long tlb1_max_eaddr;
94
95#ifdef CONFIG_KVM_E500V2
96 u32 pid[E500_PID_NUM];
97
98 /* vcpu id table */
99 struct vcpu_id_table *idt;
100#endif
101};
102
103static inline struct kvmppc_vcpu_e500 *to_e500(struct kvm_vcpu *vcpu)
104{
105 return container_of(vcpu, struct kvmppc_vcpu_e500, vcpu);
106}
107
108
109/* This geometry is the legacy default -- can be overridden by userspace */
110#define KVM_E500_TLB0_WAY_SIZE 128
111#define KVM_E500_TLB0_WAY_NUM 2
112
113#define KVM_E500_TLB0_SIZE (KVM_E500_TLB0_WAY_SIZE * KVM_E500_TLB0_WAY_NUM)
114#define KVM_E500_TLB1_SIZE 16
115
116#define index_of(tlbsel, esel) (((tlbsel) << 16) | ((esel) & 0xFFFF))
117#define tlbsel_of(index) ((index) >> 16)
118#define esel_of(index) ((index) & 0xFFFF)
119
120#define E500_TLB_USER_PERM_MASK (MAS3_UX|MAS3_UR|MAS3_UW)
121#define E500_TLB_SUPER_PERM_MASK (MAS3_SX|MAS3_SR|MAS3_SW)
122#define MAS2_ATTRIB_MASK \
123 (MAS2_X0 | MAS2_X1 | MAS2_E | MAS2_G)
124#define MAS3_ATTRIB_MASK \
125 (MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3 \
126 | E500_TLB_USER_PERM_MASK | E500_TLB_SUPER_PERM_MASK)
127
128int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500,
129 ulong value);
130int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu);
131int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu);
132int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, gva_t ea);
133int kvmppc_e500_emul_tlbilx(struct kvm_vcpu *vcpu, int type, gva_t ea);
134int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, gva_t ea);
135int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500);
136void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500);
137
138void kvmppc_get_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
139int kvmppc_set_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
140
141int kvmppc_get_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id,
142 union kvmppc_one_reg *val);
143int kvmppc_set_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id,
144 union kvmppc_one_reg *val);
145
146#ifdef CONFIG_KVM_E500V2
147unsigned int kvmppc_e500_get_sid(struct kvmppc_vcpu_e500 *vcpu_e500,
148 unsigned int as, unsigned int gid,
149 unsigned int pr, int avoid_recursion);
150#endif
151
152/* TLB helper functions */
153static inline unsigned int
154get_tlb_size(const struct kvm_book3e_206_tlb_entry *tlbe)
155{
156 return (tlbe->mas1 >> 7) & 0x1f;
157}
158
159static inline gva_t get_tlb_eaddr(const struct kvm_book3e_206_tlb_entry *tlbe)
160{
161 return tlbe->mas2 & MAS2_EPN;
162}
163
164static inline u64 get_tlb_bytes(const struct kvm_book3e_206_tlb_entry *tlbe)
165{
166 unsigned int pgsize = get_tlb_size(tlbe);
167 return 1ULL << 10 << pgsize;
168}
169
170static inline gva_t get_tlb_end(const struct kvm_book3e_206_tlb_entry *tlbe)
171{
172 u64 bytes = get_tlb_bytes(tlbe);
173 return get_tlb_eaddr(tlbe) + bytes - 1;
174}
175
176static inline u64 get_tlb_raddr(const struct kvm_book3e_206_tlb_entry *tlbe)
177{
178 return tlbe->mas7_3 & ~0xfffULL;
179}
180
181static inline unsigned int
182get_tlb_tid(const struct kvm_book3e_206_tlb_entry *tlbe)
183{
184 return (tlbe->mas1 >> 16) & 0xff;
185}
186
187static inline unsigned int
188get_tlb_ts(const struct kvm_book3e_206_tlb_entry *tlbe)
189{
190 return (tlbe->mas1 >> 12) & 0x1;
191}
192
193static inline unsigned int
194get_tlb_v(const struct kvm_book3e_206_tlb_entry *tlbe)
195{
196 return (tlbe->mas1 >> 31) & 0x1;
197}
198
199static inline unsigned int
200get_tlb_iprot(const struct kvm_book3e_206_tlb_entry *tlbe)
201{
202 return (tlbe->mas1 >> 30) & 0x1;
203}
204
205static inline unsigned int
206get_tlb_tsize(const struct kvm_book3e_206_tlb_entry *tlbe)
207{
208 return (tlbe->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
209}
210
211static inline unsigned int get_cur_pid(struct kvm_vcpu *vcpu)
212{
213 return vcpu->arch.pid & 0xff;
214}
215
216static inline unsigned int get_cur_as(struct kvm_vcpu *vcpu)
217{
218 return !!(vcpu->arch.shared->msr & (MSR_IS | MSR_DS));
219}
220
221static inline unsigned int get_cur_pr(struct kvm_vcpu *vcpu)
222{
223 return !!(vcpu->arch.shared->msr & MSR_PR);
224}
225
226static inline unsigned int get_cur_spid(const struct kvm_vcpu *vcpu)
227{
228 return (vcpu->arch.shared->mas6 >> 16) & 0xff;
229}
230
231static inline unsigned int get_cur_sas(const struct kvm_vcpu *vcpu)
232{
233 return vcpu->arch.shared->mas6 & 0x1;
234}
235
236static inline unsigned int get_tlb_tlbsel(const struct kvm_vcpu *vcpu)
237{
238 /*
239 * Manual says that tlbsel has 2 bits wide.
240 * Since we only have two TLBs, only lower bit is used.
241 */
242 return (vcpu->arch.shared->mas0 >> 28) & 0x1;
243}
244
245static inline unsigned int get_tlb_nv_bit(const struct kvm_vcpu *vcpu)
246{
247 return vcpu->arch.shared->mas0 & 0xfff;
248}
249
250static inline unsigned int get_tlb_esel_bit(const struct kvm_vcpu *vcpu)
251{
252 return (vcpu->arch.shared->mas0 >> 16) & 0xfff;
253}
254
255static inline int tlbe_is_host_safe(const struct kvm_vcpu *vcpu,
256 const struct kvm_book3e_206_tlb_entry *tlbe)
257{
258 gpa_t gpa;
259
260 if (!get_tlb_v(tlbe))
261 return 0;
262
263#ifndef CONFIG_KVM_BOOKE_HV
264 /* Does it match current guest AS? */
265 /* XXX what about IS != DS? */
266 if (get_tlb_ts(tlbe) != !!(vcpu->arch.shared->msr & MSR_IS))
267 return 0;
268#endif
269
270 gpa = get_tlb_raddr(tlbe);
271 if (!gfn_to_memslot(vcpu->kvm, gpa >> PAGE_SHIFT))
272 /* Mapping is not for RAM. */
273 return 0;
274
275 return 1;
276}
277
278static inline struct kvm_book3e_206_tlb_entry *get_entry(
279 struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel, int entry)
280{
281 int offset = vcpu_e500->gtlb_offset[tlbsel];
282 return &vcpu_e500->gtlb_arch[offset + entry];
283}
284
285void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500,
286 struct kvm_book3e_206_tlb_entry *gtlbe);
287void kvmppc_e500_tlbil_all(struct kvmppc_vcpu_e500 *vcpu_e500);
288
289#ifdef CONFIG_KVM_BOOKE_HV
290#define kvmppc_e500_get_tlb_stid(vcpu, gtlbe) get_tlb_tid(gtlbe)
291#define get_tlbmiss_tid(vcpu) get_cur_pid(vcpu)
292#define get_tlb_sts(gtlbe) (gtlbe->mas1 & MAS1_TS)
293
294/*
295 * These functions should be called with preemption disabled
296 * and the returned value is valid only in that context
297 */
298static inline int get_thread_specific_lpid(int vm_lpid)
299{
300 int vcpu_lpid = vm_lpid;
301
302 if (threads_per_core == 2)
303 vcpu_lpid |= smp_processor_id() & 1;
304
305 return vcpu_lpid;
306}
307
308static inline int get_lpid(struct kvm_vcpu *vcpu)
309{
310 return get_thread_specific_lpid(vcpu->kvm->arch.lpid);
311}
312#else
313unsigned int kvmppc_e500_get_tlb_stid(struct kvm_vcpu *vcpu,
314 struct kvm_book3e_206_tlb_entry *gtlbe);
315
316static inline unsigned int get_tlbmiss_tid(struct kvm_vcpu *vcpu)
317{
318 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
319 unsigned int tidseld = (vcpu->arch.shared->mas4 >> 16) & 0xf;
320
321 return vcpu_e500->pid[tidseld];
322}
323
324/* Force TS=1 for all guest mappings. */
325#define get_tlb_sts(gtlbe) (MAS1_TS)
326#endif /* !BOOKE_HV */
327
328static inline bool has_feature(const struct kvm_vcpu *vcpu,
329 enum vcpu_ftr ftr)
330{
331 bool has_ftr;
332 switch (ftr) {
333 case VCPU_FTR_MMU_V2:
334 has_ftr = ((vcpu->arch.mmucfg & MMUCFG_MAVN) == MMUCFG_MAVN_V2);
335 break;
336 default:
337 return false;
338 }
339 return has_ftr;
340}
341
342#endif /* KVM_E500_H */