]>
Commit | Line | Data |
---|---|---|
bc8080cb | 1 | /* |
dd9ebf1f | 2 | * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved. |
bc8080cb | 3 | * |
fc6cf995 | 4 | * Author: Yu Liu <yu.liu@freescale.com> |
73196cd3 | 5 | * Scott Wood <scottwood@freescale.com> |
4f802fe9 | 6 | * Ashish Kalra <ashish.kalra@freescale.com> |
73196cd3 | 7 | * Varun Sethi <varun.sethi@freescale.com> |
bc8080cb HB |
8 | * |
9 | * Description: | |
fc6cf995 SW |
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 | |
bc8080cb HB |
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 | ||
29a5a6f9 SW |
19 | #ifndef KVM_E500_H |
20 | #define KVM_E500_H | |
bc8080cb HB |
21 | |
22 | #include <linux/kvm_host.h> | |
0cfb50e5 | 23 | #include <asm/mmu-book3e.h> |
bc8080cb | 24 | #include <asm/tlb.h> |
fc6cf995 | 25 | |
307d9008 MC |
26 | enum vcpu_ftr { |
27 | VCPU_FTR_MMU_V2 | |
28 | }; | |
29 | ||
fc6cf995 SW |
30 | #define E500_PID_NUM 3 |
31 | #define E500_TLB_NUM 2 | |
32 | ||
47bf3797 | 33 | /* entry is mapped somewhere in host TLB */ |
08c9a188 | 34 | #define E500_TLB_VALID (1 << 31) |
47bf3797 | 35 | /* TLB1 entry is mapped by host TLB1, tracked by bitmaps */ |
08c9a188 | 36 | #define E500_TLB_BITMAP (1 << 30) |
47bf3797 | 37 | /* TLB1 entry is mapped by host TLB0 */ |
08c9a188 BB |
38 | #define E500_TLB_TLB0 (1 << 29) |
39 | /* bits [6-5] MAS2_X1 and MAS2_X0 and [4-0] bits for WIMGE */ | |
40 | #define E500_TLB_MAS2_ATTR (0x7f) | |
fc6cf995 SW |
41 | |
42 | struct tlbe_ref { | |
47bf3797 SW |
43 | pfn_t pfn; /* valid only for TLB0, except briefly */ |
44 | unsigned int flags; /* E500_TLB_* */ | |
fc6cf995 SW |
45 | }; |
46 | ||
47 | struct tlbe_priv { | |
47bf3797 | 48 | struct tlbe_ref ref; |
fc6cf995 SW |
49 | }; |
50 | ||
bf7ca4bd | 51 | #ifdef CONFIG_KVM_E500V2 |
fc6cf995 | 52 | struct vcpu_id_table; |
8fdd21a2 | 53 | #endif |
fc6cf995 SW |
54 | |
55 | struct kvmppc_e500_tlb_params { | |
56 | int entries, ways, sets; | |
57 | }; | |
58 | ||
59 | struct kvmppc_vcpu_e500 { | |
52e1718c SW |
60 | struct kvm_vcpu vcpu; |
61 | ||
fc6cf995 SW |
62 | /* Unmodified copy of the guest's TLB -- shared with host userspace. */ |
63 | struct kvm_book3e_206_tlb_entry *gtlb_arch; | |
64 | ||
65 | /* Starting entry number in gtlb_arch[] */ | |
66 | int gtlb_offset[E500_TLB_NUM]; | |
67 | ||
68 | /* KVM internal information associated with each guest TLB entry */ | |
69 | struct tlbe_priv *gtlb_priv[E500_TLB_NUM]; | |
70 | ||
71 | struct kvmppc_e500_tlb_params gtlb_params[E500_TLB_NUM]; | |
72 | ||
73 | unsigned int gtlb_nv[E500_TLB_NUM]; | |
74 | ||
fc6cf995 SW |
75 | unsigned int host_tlb1_nv; |
76 | ||
fc6cf995 | 77 | u32 svr; |
fc6cf995 SW |
78 | u32 l1csr0; |
79 | u32 l1csr1; | |
80 | u32 hid0; | |
81 | u32 hid1; | |
fc6cf995 SW |
82 | u64 mcar; |
83 | ||
84 | struct page **shared_tlb_pages; | |
85 | int num_shared_tlb_pages; | |
8fdd21a2 | 86 | |
4f802fe9 SW |
87 | u64 *g2h_tlb1_map; |
88 | unsigned int *h2g_tlb1_rmap; | |
89 | ||
cc902ad4 BB |
90 | /* Minimum and maximum address mapped my TLB1 */ |
91 | unsigned long tlb1_min_eaddr; | |
92 | unsigned long tlb1_max_eaddr; | |
93 | ||
bf7ca4bd | 94 | #ifdef CONFIG_KVM_E500V2 |
8fdd21a2 SW |
95 | u32 pid[E500_PID_NUM]; |
96 | ||
97 | /* vcpu id table */ | |
98 | struct vcpu_id_table *idt; | |
99 | #endif | |
fc6cf995 SW |
100 | }; |
101 | ||
102 | static inline struct kvmppc_vcpu_e500 *to_e500(struct kvm_vcpu *vcpu) | |
103 | { | |
104 | return container_of(vcpu, struct kvmppc_vcpu_e500, vcpu); | |
105 | } | |
bc8080cb | 106 | |
73196cd3 | 107 | |
dc83b8bc SW |
108 | /* This geometry is the legacy default -- can be overridden by userspace */ |
109 | #define KVM_E500_TLB0_WAY_SIZE 128 | |
110 | #define KVM_E500_TLB0_WAY_NUM 2 | |
bc8080cb HB |
111 | |
112 | #define KVM_E500_TLB0_SIZE (KVM_E500_TLB0_WAY_SIZE * KVM_E500_TLB0_WAY_NUM) | |
113 | #define KVM_E500_TLB1_SIZE 16 | |
114 | ||
115 | #define index_of(tlbsel, esel) (((tlbsel) << 16) | ((esel) & 0xFFFF)) | |
116 | #define tlbsel_of(index) ((index) >> 16) | |
117 | #define esel_of(index) ((index) & 0xFFFF) | |
118 | ||
119 | #define E500_TLB_USER_PERM_MASK (MAS3_UX|MAS3_UR|MAS3_UW) | |
120 | #define E500_TLB_SUPER_PERM_MASK (MAS3_SX|MAS3_SR|MAS3_SW) | |
121 | #define MAS2_ATTRIB_MASK \ | |
ca8ccbd4 | 122 | (MAS2_X0 | MAS2_X1 | MAS2_E | MAS2_G) |
bc8080cb HB |
123 | #define MAS3_ATTRIB_MASK \ |
124 | (MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3 \ | |
125 | | E500_TLB_USER_PERM_MASK | E500_TLB_SUPER_PERM_MASK) | |
126 | ||
52e1718c SW |
127 | int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, |
128 | ulong value); | |
129 | int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu); | |
130 | int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu); | |
7cdd7a95 MC |
131 | int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, gva_t ea); |
132 | int kvmppc_e500_emul_tlbilx(struct kvm_vcpu *vcpu, int type, gva_t ea); | |
133 | int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, gva_t ea); | |
52e1718c SW |
134 | int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500); |
135 | void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500); | |
136 | ||
137 | void kvmppc_get_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); | |
138 | int kvmppc_set_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); | |
bc8080cb | 139 | |
a85d2aa2 MC |
140 | int kvmppc_get_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id, |
141 | union kvmppc_one_reg *val); | |
142 | int kvmppc_set_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id, | |
143 | union kvmppc_one_reg *val); | |
8fdd21a2 | 144 | |
bf7ca4bd | 145 | #ifdef CONFIG_KVM_E500V2 |
8fdd21a2 SW |
146 | unsigned int kvmppc_e500_get_sid(struct kvmppc_vcpu_e500 *vcpu_e500, |
147 | unsigned int as, unsigned int gid, | |
148 | unsigned int pr, int avoid_recursion); | |
149 | #endif | |
150 | ||
bc8080cb | 151 | /* TLB helper functions */ |
dc83b8bc SW |
152 | static inline unsigned int |
153 | get_tlb_size(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb | 154 | { |
0cfb50e5 | 155 | return (tlbe->mas1 >> 7) & 0x1f; |
bc8080cb HB |
156 | } |
157 | ||
dc83b8bc | 158 | static inline gva_t get_tlb_eaddr(const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb | 159 | { |
e9666ea1 | 160 | return tlbe->mas2 & MAS2_EPN; |
bc8080cb HB |
161 | } |
162 | ||
dc83b8bc | 163 | static inline u64 get_tlb_bytes(const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb HB |
164 | { |
165 | unsigned int pgsize = get_tlb_size(tlbe); | |
0cfb50e5 | 166 | return 1ULL << 10 << pgsize; |
bc8080cb HB |
167 | } |
168 | ||
dc83b8bc | 169 | static inline gva_t get_tlb_end(const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb HB |
170 | { |
171 | u64 bytes = get_tlb_bytes(tlbe); | |
172 | return get_tlb_eaddr(tlbe) + bytes - 1; | |
173 | } | |
174 | ||
dc83b8bc | 175 | static inline u64 get_tlb_raddr(const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb | 176 | { |
dc83b8bc | 177 | return tlbe->mas7_3 & ~0xfffULL; |
bc8080cb HB |
178 | } |
179 | ||
dc83b8bc SW |
180 | static inline unsigned int |
181 | get_tlb_tid(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb HB |
182 | { |
183 | return (tlbe->mas1 >> 16) & 0xff; | |
184 | } | |
185 | ||
dc83b8bc SW |
186 | static inline unsigned int |
187 | get_tlb_ts(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb HB |
188 | { |
189 | return (tlbe->mas1 >> 12) & 0x1; | |
190 | } | |
191 | ||
dc83b8bc SW |
192 | static inline unsigned int |
193 | get_tlb_v(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb HB |
194 | { |
195 | return (tlbe->mas1 >> 31) & 0x1; | |
196 | } | |
197 | ||
dc83b8bc SW |
198 | static inline unsigned int |
199 | get_tlb_iprot(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb HB |
200 | { |
201 | return (tlbe->mas1 >> 30) & 0x1; | |
202 | } | |
203 | ||
8fdd21a2 SW |
204 | static inline unsigned int |
205 | get_tlb_tsize(const struct kvm_book3e_206_tlb_entry *tlbe) | |
206 | { | |
207 | return (tlbe->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; | |
208 | } | |
209 | ||
bc8080cb HB |
210 | static inline unsigned int get_cur_pid(struct kvm_vcpu *vcpu) |
211 | { | |
212 | return vcpu->arch.pid & 0xff; | |
213 | } | |
214 | ||
dd9ebf1f LY |
215 | static inline unsigned int get_cur_as(struct kvm_vcpu *vcpu) |
216 | { | |
217 | return !!(vcpu->arch.shared->msr & (MSR_IS | MSR_DS)); | |
218 | } | |
219 | ||
220 | static inline unsigned int get_cur_pr(struct kvm_vcpu *vcpu) | |
221 | { | |
222 | return !!(vcpu->arch.shared->msr & MSR_PR); | |
223 | } | |
224 | ||
b5904972 | 225 | static inline unsigned int get_cur_spid(const struct kvm_vcpu *vcpu) |
bc8080cb | 226 | { |
b5904972 | 227 | return (vcpu->arch.shared->mas6 >> 16) & 0xff; |
bc8080cb HB |
228 | } |
229 | ||
b5904972 | 230 | static inline unsigned int get_cur_sas(const struct kvm_vcpu *vcpu) |
bc8080cb | 231 | { |
b5904972 | 232 | return vcpu->arch.shared->mas6 & 0x1; |
bc8080cb HB |
233 | } |
234 | ||
b5904972 | 235 | static inline unsigned int get_tlb_tlbsel(const struct kvm_vcpu *vcpu) |
bc8080cb HB |
236 | { |
237 | /* | |
238 | * Manual says that tlbsel has 2 bits wide. | |
fb2838d4 | 239 | * Since we only have two TLBs, only lower bit is used. |
bc8080cb | 240 | */ |
b5904972 | 241 | return (vcpu->arch.shared->mas0 >> 28) & 0x1; |
bc8080cb HB |
242 | } |
243 | ||
b5904972 | 244 | static inline unsigned int get_tlb_nv_bit(const struct kvm_vcpu *vcpu) |
bc8080cb | 245 | { |
b5904972 | 246 | return vcpu->arch.shared->mas0 & 0xfff; |
bc8080cb HB |
247 | } |
248 | ||
b5904972 | 249 | static inline unsigned int get_tlb_esel_bit(const struct kvm_vcpu *vcpu) |
bc8080cb | 250 | { |
b5904972 | 251 | return (vcpu->arch.shared->mas0 >> 16) & 0xfff; |
bc8080cb HB |
252 | } |
253 | ||
bc8080cb | 254 | static inline int tlbe_is_host_safe(const struct kvm_vcpu *vcpu, |
dc83b8bc | 255 | const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb HB |
256 | { |
257 | gpa_t gpa; | |
258 | ||
259 | if (!get_tlb_v(tlbe)) | |
260 | return 0; | |
261 | ||
73196cd3 | 262 | #ifndef CONFIG_KVM_BOOKE_HV |
bc8080cb HB |
263 | /* Does it match current guest AS? */ |
264 | /* XXX what about IS != DS? */ | |
666e7252 | 265 | if (get_tlb_ts(tlbe) != !!(vcpu->arch.shared->msr & MSR_IS)) |
bc8080cb | 266 | return 0; |
73196cd3 | 267 | #endif |
bc8080cb HB |
268 | |
269 | gpa = get_tlb_raddr(tlbe); | |
270 | if (!gfn_to_memslot(vcpu->kvm, gpa >> PAGE_SHIFT)) | |
271 | /* Mapping is not for RAM. */ | |
272 | return 0; | |
273 | ||
274 | return 1; | |
275 | } | |
276 | ||
8fdd21a2 SW |
277 | static inline struct kvm_book3e_206_tlb_entry *get_entry( |
278 | struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel, int entry) | |
279 | { | |
280 | int offset = vcpu_e500->gtlb_offset[tlbsel]; | |
281 | return &vcpu_e500->gtlb_arch[offset + entry]; | |
282 | } | |
283 | ||
284 | void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500, | |
285 | struct kvm_book3e_206_tlb_entry *gtlbe); | |
286 | void kvmppc_e500_tlbil_all(struct kvmppc_vcpu_e500 *vcpu_e500); | |
287 | ||
73196cd3 SW |
288 | #ifdef CONFIG_KVM_BOOKE_HV |
289 | #define kvmppc_e500_get_tlb_stid(vcpu, gtlbe) get_tlb_tid(gtlbe) | |
290 | #define get_tlbmiss_tid(vcpu) get_cur_pid(vcpu) | |
291 | #define get_tlb_sts(gtlbe) (gtlbe->mas1 & MAS1_TS) | |
292 | #else | |
8fdd21a2 SW |
293 | unsigned int kvmppc_e500_get_tlb_stid(struct kvm_vcpu *vcpu, |
294 | struct kvm_book3e_206_tlb_entry *gtlbe); | |
295 | ||
296 | static inline unsigned int get_tlbmiss_tid(struct kvm_vcpu *vcpu) | |
297 | { | |
298 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
299 | unsigned int tidseld = (vcpu->arch.shared->mas4 >> 16) & 0xf; | |
300 | ||
301 | return vcpu_e500->pid[tidseld]; | |
302 | } | |
303 | ||
304 | /* Force TS=1 for all guest mappings. */ | |
305 | #define get_tlb_sts(gtlbe) (MAS1_TS) | |
73196cd3 | 306 | #endif /* !BOOKE_HV */ |
8fdd21a2 | 307 | |
307d9008 MC |
308 | static inline bool has_feature(const struct kvm_vcpu *vcpu, |
309 | enum vcpu_ftr ftr) | |
310 | { | |
311 | bool has_ftr; | |
312 | switch (ftr) { | |
313 | case VCPU_FTR_MMU_V2: | |
314 | has_ftr = ((vcpu->arch.mmucfg & MMUCFG_MAVN) == MMUCFG_MAVN_V2); | |
315 | break; | |
316 | default: | |
317 | return false; | |
318 | } | |
319 | return has_ftr; | |
320 | } | |
321 | ||
29a5a6f9 | 322 | #endif /* KVM_E500_H */ |