Commit | Line | Data |
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d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
bc8080cb | 2 | /* |
dd9ebf1f | 3 | * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved. |
bc8080cb | 4 | * |
fc6cf995 | 5 | * Author: Yu Liu <yu.liu@freescale.com> |
73196cd3 | 6 | * Scott Wood <scottwood@freescale.com> |
4f802fe9 | 7 | * Ashish Kalra <ashish.kalra@freescale.com> |
73196cd3 | 8 | * Varun Sethi <varun.sethi@freescale.com> |
bc8080cb HB |
9 | * |
10 | * Description: | |
fc6cf995 SW |
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 | |
bc8080cb HB |
14 | */ |
15 | ||
29a5a6f9 SW |
16 | #ifndef KVM_E500_H |
17 | #define KVM_E500_H | |
bc8080cb HB |
18 | |
19 | #include <linux/kvm_host.h> | |
994da93d | 20 | #include <asm/nohash/mmu-book3e.h> |
bc8080cb | 21 | #include <asm/tlb.h> |
188e267c | 22 | #include <asm/cputhreads.h> |
fc6cf995 | 23 | |
307d9008 MC |
24 | enum vcpu_ftr { |
25 | VCPU_FTR_MMU_V2 | |
26 | }; | |
27 | ||
fc6cf995 SW |
28 | #define E500_PID_NUM 3 |
29 | #define E500_TLB_NUM 2 | |
30 | ||
47bf3797 | 31 | /* entry is mapped somewhere in host TLB */ |
08c9a188 | 32 | #define E500_TLB_VALID (1 << 31) |
47bf3797 | 33 | /* TLB1 entry is mapped by host TLB1, tracked by bitmaps */ |
08c9a188 | 34 | #define E500_TLB_BITMAP (1 << 30) |
47bf3797 | 35 | /* TLB1 entry is mapped by host TLB0 */ |
08c9a188 BB |
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) | |
fc6cf995 SW |
39 | |
40 | struct tlbe_ref { | |
ba049e93 | 41 | kvm_pfn_t pfn; /* valid only for TLB0, except briefly */ |
47bf3797 | 42 | unsigned int flags; /* E500_TLB_* */ |
fc6cf995 SW |
43 | }; |
44 | ||
45 | struct tlbe_priv { | |
47bf3797 | 46 | struct tlbe_ref ref; |
fc6cf995 SW |
47 | }; |
48 | ||
bf7ca4bd | 49 | #ifdef CONFIG_KVM_E500V2 |
fc6cf995 | 50 | struct vcpu_id_table; |
8fdd21a2 | 51 | #endif |
fc6cf995 SW |
52 | |
53 | struct kvmppc_e500_tlb_params { | |
54 | int entries, ways, sets; | |
55 | }; | |
56 | ||
57 | struct kvmppc_vcpu_e500 { | |
52e1718c SW |
58 | struct kvm_vcpu vcpu; |
59 | ||
fc6cf995 SW |
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 | ||
fc6cf995 SW |
73 | unsigned int host_tlb1_nv; |
74 | ||
fc6cf995 | 75 | u32 svr; |
fc6cf995 SW |
76 | u32 l1csr0; |
77 | u32 l1csr1; | |
78 | u32 hid0; | |
79 | u32 hid1; | |
fc6cf995 SW |
80 | u64 mcar; |
81 | ||
82 | struct page **shared_tlb_pages; | |
83 | int num_shared_tlb_pages; | |
8fdd21a2 | 84 | |
4f802fe9 SW |
85 | u64 *g2h_tlb1_map; |
86 | unsigned int *h2g_tlb1_rmap; | |
87 | ||
cc902ad4 BB |
88 | /* Minimum and maximum address mapped my TLB1 */ |
89 | unsigned long tlb1_min_eaddr; | |
90 | unsigned long tlb1_max_eaddr; | |
91 | ||
bf7ca4bd | 92 | #ifdef CONFIG_KVM_E500V2 |
8fdd21a2 SW |
93 | u32 pid[E500_PID_NUM]; |
94 | ||
95 | /* vcpu id table */ | |
96 | struct vcpu_id_table *idt; | |
97 | #endif | |
fc6cf995 SW |
98 | }; |
99 | ||
100 | static inline struct kvmppc_vcpu_e500 *to_e500(struct kvm_vcpu *vcpu) | |
101 | { | |
102 | return container_of(vcpu, struct kvmppc_vcpu_e500, vcpu); | |
103 | } | |
bc8080cb | 104 | |
73196cd3 | 105 | |
dc83b8bc SW |
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 | |
bc8080cb HB |
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 \ | |
ca8ccbd4 | 120 | (MAS2_X0 | MAS2_X1 | MAS2_E | MAS2_G) |
bc8080cb HB |
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 | ||
52e1718c SW |
125 | int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, |
126 | ulong value); | |
127 | int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu); | |
128 | int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu); | |
7cdd7a95 MC |
129 | int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, gva_t ea); |
130 | int kvmppc_e500_emul_tlbilx(struct kvm_vcpu *vcpu, int type, gva_t ea); | |
131 | int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, gva_t ea); | |
52e1718c SW |
132 | int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500); |
133 | void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500); | |
134 | ||
135 | void kvmppc_get_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); | |
136 | int kvmppc_set_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); | |
bc8080cb | 137 | |
a85d2aa2 MC |
138 | int kvmppc_get_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id, |
139 | union kvmppc_one_reg *val); | |
140 | int kvmppc_set_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id, | |
141 | union kvmppc_one_reg *val); | |
8fdd21a2 | 142 | |
bf7ca4bd | 143 | #ifdef CONFIG_KVM_E500V2 |
8fdd21a2 SW |
144 | unsigned 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 | ||
bc8080cb | 149 | /* TLB helper functions */ |
dc83b8bc SW |
150 | static inline unsigned int |
151 | get_tlb_size(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb | 152 | { |
0cfb50e5 | 153 | return (tlbe->mas1 >> 7) & 0x1f; |
bc8080cb HB |
154 | } |
155 | ||
dc83b8bc | 156 | static inline gva_t get_tlb_eaddr(const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb | 157 | { |
e9666ea1 | 158 | return tlbe->mas2 & MAS2_EPN; |
bc8080cb HB |
159 | } |
160 | ||
dc83b8bc | 161 | static inline u64 get_tlb_bytes(const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb HB |
162 | { |
163 | unsigned int pgsize = get_tlb_size(tlbe); | |
0cfb50e5 | 164 | return 1ULL << 10 << pgsize; |
bc8080cb HB |
165 | } |
166 | ||
dc83b8bc | 167 | static inline gva_t get_tlb_end(const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb HB |
168 | { |
169 | u64 bytes = get_tlb_bytes(tlbe); | |
170 | return get_tlb_eaddr(tlbe) + bytes - 1; | |
171 | } | |
172 | ||
dc83b8bc | 173 | static inline u64 get_tlb_raddr(const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb | 174 | { |
dc83b8bc | 175 | return tlbe->mas7_3 & ~0xfffULL; |
bc8080cb HB |
176 | } |
177 | ||
dc83b8bc SW |
178 | static inline unsigned int |
179 | get_tlb_tid(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb HB |
180 | { |
181 | return (tlbe->mas1 >> 16) & 0xff; | |
182 | } | |
183 | ||
dc83b8bc SW |
184 | static inline unsigned int |
185 | get_tlb_ts(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb HB |
186 | { |
187 | return (tlbe->mas1 >> 12) & 0x1; | |
188 | } | |
189 | ||
dc83b8bc SW |
190 | static inline unsigned int |
191 | get_tlb_v(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb HB |
192 | { |
193 | return (tlbe->mas1 >> 31) & 0x1; | |
194 | } | |
195 | ||
dc83b8bc SW |
196 | static inline unsigned int |
197 | get_tlb_iprot(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb HB |
198 | { |
199 | return (tlbe->mas1 >> 30) & 0x1; | |
200 | } | |
201 | ||
8fdd21a2 SW |
202 | static inline unsigned int |
203 | get_tlb_tsize(const struct kvm_book3e_206_tlb_entry *tlbe) | |
204 | { | |
205 | return (tlbe->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; | |
206 | } | |
207 | ||
bc8080cb HB |
208 | static inline unsigned int get_cur_pid(struct kvm_vcpu *vcpu) |
209 | { | |
210 | return vcpu->arch.pid & 0xff; | |
211 | } | |
212 | ||
dd9ebf1f LY |
213 | static inline unsigned int get_cur_as(struct kvm_vcpu *vcpu) |
214 | { | |
215 | return !!(vcpu->arch.shared->msr & (MSR_IS | MSR_DS)); | |
216 | } | |
217 | ||
218 | static inline unsigned int get_cur_pr(struct kvm_vcpu *vcpu) | |
219 | { | |
220 | return !!(vcpu->arch.shared->msr & MSR_PR); | |
221 | } | |
222 | ||
b5904972 | 223 | static inline unsigned int get_cur_spid(const struct kvm_vcpu *vcpu) |
bc8080cb | 224 | { |
b5904972 | 225 | return (vcpu->arch.shared->mas6 >> 16) & 0xff; |
bc8080cb HB |
226 | } |
227 | ||
b5904972 | 228 | static inline unsigned int get_cur_sas(const struct kvm_vcpu *vcpu) |
bc8080cb | 229 | { |
b5904972 | 230 | return vcpu->arch.shared->mas6 & 0x1; |
bc8080cb HB |
231 | } |
232 | ||
b5904972 | 233 | static inline unsigned int get_tlb_tlbsel(const struct kvm_vcpu *vcpu) |
bc8080cb HB |
234 | { |
235 | /* | |
236 | * Manual says that tlbsel has 2 bits wide. | |
fb2838d4 | 237 | * Since we only have two TLBs, only lower bit is used. |
bc8080cb | 238 | */ |
b5904972 | 239 | return (vcpu->arch.shared->mas0 >> 28) & 0x1; |
bc8080cb HB |
240 | } |
241 | ||
b5904972 | 242 | static inline unsigned int get_tlb_nv_bit(const struct kvm_vcpu *vcpu) |
bc8080cb | 243 | { |
b5904972 | 244 | return vcpu->arch.shared->mas0 & 0xfff; |
bc8080cb HB |
245 | } |
246 | ||
b5904972 | 247 | static inline unsigned int get_tlb_esel_bit(const struct kvm_vcpu *vcpu) |
bc8080cb | 248 | { |
b5904972 | 249 | return (vcpu->arch.shared->mas0 >> 16) & 0xfff; |
bc8080cb HB |
250 | } |
251 | ||
bc8080cb | 252 | static inline int tlbe_is_host_safe(const struct kvm_vcpu *vcpu, |
dc83b8bc | 253 | const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb HB |
254 | { |
255 | gpa_t gpa; | |
256 | ||
257 | if (!get_tlb_v(tlbe)) | |
258 | return 0; | |
259 | ||
73196cd3 | 260 | #ifndef CONFIG_KVM_BOOKE_HV |
bc8080cb HB |
261 | /* Does it match current guest AS? */ |
262 | /* XXX what about IS != DS? */ | |
666e7252 | 263 | if (get_tlb_ts(tlbe) != !!(vcpu->arch.shared->msr & MSR_IS)) |
bc8080cb | 264 | return 0; |
73196cd3 | 265 | #endif |
bc8080cb HB |
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 | ||
8fdd21a2 SW |
275 | static 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 | ||
282 | void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500, | |
283 | struct kvm_book3e_206_tlb_entry *gtlbe); | |
284 | void kvmppc_e500_tlbil_all(struct kvmppc_vcpu_e500 *vcpu_e500); | |
285 | ||
73196cd3 SW |
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) | |
188e267c MC |
290 | |
291 | /* | |
292 | * These functions should be called with preemption disabled | |
293 | * and the returned value is valid only in that context | |
294 | */ | |
295 | static 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 | ||
305 | static inline int get_lpid(struct kvm_vcpu *vcpu) | |
306 | { | |
307 | return get_thread_specific_lpid(vcpu->kvm->arch.lpid); | |
308 | } | |
73196cd3 | 309 | #else |
8fdd21a2 SW |
310 | unsigned int kvmppc_e500_get_tlb_stid(struct kvm_vcpu *vcpu, |
311 | struct kvm_book3e_206_tlb_entry *gtlbe); | |
312 | ||
313 | static 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) | |
73196cd3 | 323 | #endif /* !BOOKE_HV */ |
8fdd21a2 | 324 | |
307d9008 MC |
325 | static 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 | ||
29a5a6f9 | 339 | #endif /* KVM_E500_H */ |