Commit | Line | Data |
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bc8080cb | 1 | /* |
49ea0695 | 2 | * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved. |
bc8080cb HB |
3 | * |
4 | * Author: Yu Liu, yu.liu@freescale.com | |
5 | * | |
6 | * Description: | |
7 | * This file is based on arch/powerpc/kvm/44x_tlb.c, | |
8 | * by Hollis Blanchard <hollisb@us.ibm.com>. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License, version 2, as | |
12 | * published by the Free Software Foundation. | |
13 | */ | |
14 | ||
0164c0f0 | 15 | #include <linux/kernel.h> |
bc8080cb | 16 | #include <linux/types.h> |
5a0e3ad6 | 17 | #include <linux/slab.h> |
bc8080cb HB |
18 | #include <linux/string.h> |
19 | #include <linux/kvm.h> | |
20 | #include <linux/kvm_host.h> | |
21 | #include <linux/highmem.h> | |
dc83b8bc SW |
22 | #include <linux/log2.h> |
23 | #include <linux/uaccess.h> | |
24 | #include <linux/sched.h> | |
25 | #include <linux/rwsem.h> | |
26 | #include <linux/vmalloc.h> | |
95325e6b | 27 | #include <linux/hugetlb.h> |
bc8080cb HB |
28 | #include <asm/kvm_ppc.h> |
29 | #include <asm/kvm_e500.h> | |
30 | ||
9aa4dd5e | 31 | #include "../mm/mmu_decl.h" |
bc8080cb | 32 | #include "e500_tlb.h" |
46f43c6e | 33 | #include "trace.h" |
49ea0695 | 34 | #include "timing.h" |
bc8080cb | 35 | |
0164c0f0 | 36 | #define to_htlb1_esel(esel) (host_tlb_params[1].entries - (esel) - 1) |
bc8080cb | 37 | |
dd9ebf1f LY |
38 | struct id { |
39 | unsigned long val; | |
40 | struct id **pentry; | |
41 | }; | |
42 | ||
43 | #define NUM_TIDS 256 | |
44 | ||
45 | /* | |
46 | * This table provide mappings from: | |
47 | * (guestAS,guestTID,guestPR) --> ID of physical cpu | |
48 | * guestAS [0..1] | |
49 | * guestTID [0..255] | |
50 | * guestPR [0..1] | |
51 | * ID [1..255] | |
52 | * Each vcpu keeps one vcpu_id_table. | |
53 | */ | |
54 | struct vcpu_id_table { | |
55 | struct id id[2][NUM_TIDS][2]; | |
56 | }; | |
57 | ||
58 | /* | |
59 | * This table provide reversed mappings of vcpu_id_table: | |
60 | * ID --> address of vcpu_id_table item. | |
61 | * Each physical core has one pcpu_id_table. | |
62 | */ | |
63 | struct pcpu_id_table { | |
64 | struct id *entry[NUM_TIDS]; | |
65 | }; | |
66 | ||
67 | static DEFINE_PER_CPU(struct pcpu_id_table, pcpu_sids); | |
68 | ||
69 | /* This variable keeps last used shadow ID on local core. | |
70 | * The valid range of shadow ID is [1..255] */ | |
71 | static DEFINE_PER_CPU(unsigned long, pcpu_last_used_sid); | |
72 | ||
0164c0f0 | 73 | static struct kvmppc_e500_tlb_params host_tlb_params[E500_TLB_NUM]; |
bc8080cb | 74 | |
dc83b8bc SW |
75 | static struct kvm_book3e_206_tlb_entry *get_entry( |
76 | struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel, int entry) | |
77 | { | |
78 | int offset = vcpu_e500->gtlb_offset[tlbsel]; | |
79 | return &vcpu_e500->gtlb_arch[offset + entry]; | |
80 | } | |
81 | ||
dd9ebf1f LY |
82 | /* |
83 | * Allocate a free shadow id and setup a valid sid mapping in given entry. | |
84 | * A mapping is only valid when vcpu_id_table and pcpu_id_table are match. | |
85 | * | |
86 | * The caller must have preemption disabled, and keep it that way until | |
87 | * it has finished with the returned shadow id (either written into the | |
88 | * TLB or arch.shadow_pid, or discarded). | |
89 | */ | |
90 | static inline int local_sid_setup_one(struct id *entry) | |
91 | { | |
92 | unsigned long sid; | |
93 | int ret = -1; | |
94 | ||
95 | sid = ++(__get_cpu_var(pcpu_last_used_sid)); | |
96 | if (sid < NUM_TIDS) { | |
97 | __get_cpu_var(pcpu_sids).entry[sid] = entry; | |
98 | entry->val = sid; | |
99 | entry->pentry = &__get_cpu_var(pcpu_sids).entry[sid]; | |
100 | ret = sid; | |
101 | } | |
102 | ||
103 | /* | |
104 | * If sid == NUM_TIDS, we've run out of sids. We return -1, and | |
105 | * the caller will invalidate everything and start over. | |
106 | * | |
107 | * sid > NUM_TIDS indicates a race, which we disable preemption to | |
108 | * avoid. | |
109 | */ | |
110 | WARN_ON(sid > NUM_TIDS); | |
111 | ||
112 | return ret; | |
113 | } | |
114 | ||
115 | /* | |
116 | * Check if given entry contain a valid shadow id mapping. | |
117 | * An ID mapping is considered valid only if | |
118 | * both vcpu and pcpu know this mapping. | |
119 | * | |
120 | * The caller must have preemption disabled, and keep it that way until | |
121 | * it has finished with the returned shadow id (either written into the | |
122 | * TLB or arch.shadow_pid, or discarded). | |
123 | */ | |
124 | static inline int local_sid_lookup(struct id *entry) | |
125 | { | |
126 | if (entry && entry->val != 0 && | |
127 | __get_cpu_var(pcpu_sids).entry[entry->val] == entry && | |
128 | entry->pentry == &__get_cpu_var(pcpu_sids).entry[entry->val]) | |
129 | return entry->val; | |
130 | return -1; | |
131 | } | |
132 | ||
90b92a6f | 133 | /* Invalidate all id mappings on local core -- call with preempt disabled */ |
dd9ebf1f LY |
134 | static inline void local_sid_destroy_all(void) |
135 | { | |
dd9ebf1f LY |
136 | __get_cpu_var(pcpu_last_used_sid) = 0; |
137 | memset(&__get_cpu_var(pcpu_sids), 0, sizeof(__get_cpu_var(pcpu_sids))); | |
dd9ebf1f LY |
138 | } |
139 | ||
140 | static void *kvmppc_e500_id_table_alloc(struct kvmppc_vcpu_e500 *vcpu_e500) | |
141 | { | |
142 | vcpu_e500->idt = kzalloc(sizeof(struct vcpu_id_table), GFP_KERNEL); | |
143 | return vcpu_e500->idt; | |
144 | } | |
145 | ||
146 | static void kvmppc_e500_id_table_free(struct kvmppc_vcpu_e500 *vcpu_e500) | |
147 | { | |
148 | kfree(vcpu_e500->idt); | |
149 | } | |
150 | ||
151 | /* Invalidate all mappings on vcpu */ | |
152 | static void kvmppc_e500_id_table_reset_all(struct kvmppc_vcpu_e500 *vcpu_e500) | |
153 | { | |
154 | memset(vcpu_e500->idt, 0, sizeof(struct vcpu_id_table)); | |
155 | ||
156 | /* Update shadow pid when mappings are changed */ | |
157 | kvmppc_e500_recalc_shadow_pid(vcpu_e500); | |
158 | } | |
159 | ||
160 | /* Invalidate one ID mapping on vcpu */ | |
161 | static inline void kvmppc_e500_id_table_reset_one( | |
162 | struct kvmppc_vcpu_e500 *vcpu_e500, | |
163 | int as, int pid, int pr) | |
164 | { | |
165 | struct vcpu_id_table *idt = vcpu_e500->idt; | |
166 | ||
167 | BUG_ON(as >= 2); | |
168 | BUG_ON(pid >= NUM_TIDS); | |
169 | BUG_ON(pr >= 2); | |
170 | ||
171 | idt->id[as][pid][pr].val = 0; | |
172 | idt->id[as][pid][pr].pentry = NULL; | |
173 | ||
174 | /* Update shadow pid when mappings are changed */ | |
175 | kvmppc_e500_recalc_shadow_pid(vcpu_e500); | |
176 | } | |
177 | ||
178 | /* | |
179 | * Map guest (vcpu,AS,ID,PR) to physical core shadow id. | |
180 | * This function first lookup if a valid mapping exists, | |
181 | * if not, then creates a new one. | |
182 | * | |
183 | * The caller must have preemption disabled, and keep it that way until | |
184 | * it has finished with the returned shadow id (either written into the | |
185 | * TLB or arch.shadow_pid, or discarded). | |
186 | */ | |
187 | static unsigned int kvmppc_e500_get_sid(struct kvmppc_vcpu_e500 *vcpu_e500, | |
188 | unsigned int as, unsigned int gid, | |
189 | unsigned int pr, int avoid_recursion) | |
190 | { | |
191 | struct vcpu_id_table *idt = vcpu_e500->idt; | |
192 | int sid; | |
193 | ||
194 | BUG_ON(as >= 2); | |
195 | BUG_ON(gid >= NUM_TIDS); | |
196 | BUG_ON(pr >= 2); | |
197 | ||
198 | sid = local_sid_lookup(&idt->id[as][gid][pr]); | |
199 | ||
200 | while (sid <= 0) { | |
201 | /* No mapping yet */ | |
202 | sid = local_sid_setup_one(&idt->id[as][gid][pr]); | |
203 | if (sid <= 0) { | |
204 | _tlbil_all(); | |
205 | local_sid_destroy_all(); | |
206 | } | |
207 | ||
208 | /* Update shadow pid when mappings are changed */ | |
209 | if (!avoid_recursion) | |
210 | kvmppc_e500_recalc_shadow_pid(vcpu_e500); | |
211 | } | |
212 | ||
213 | return sid; | |
214 | } | |
215 | ||
216 | /* Map guest pid to shadow. | |
217 | * We use PID to keep shadow of current guest non-zero PID, | |
218 | * and use PID1 to keep shadow of guest zero PID. | |
219 | * So that guest tlbe with TID=0 can be accessed at any time */ | |
220 | void kvmppc_e500_recalc_shadow_pid(struct kvmppc_vcpu_e500 *vcpu_e500) | |
221 | { | |
222 | preempt_disable(); | |
223 | vcpu_e500->vcpu.arch.shadow_pid = kvmppc_e500_get_sid(vcpu_e500, | |
224 | get_cur_as(&vcpu_e500->vcpu), | |
225 | get_cur_pid(&vcpu_e500->vcpu), | |
226 | get_cur_pr(&vcpu_e500->vcpu), 1); | |
227 | vcpu_e500->vcpu.arch.shadow_pid1 = kvmppc_e500_get_sid(vcpu_e500, | |
228 | get_cur_as(&vcpu_e500->vcpu), 0, | |
229 | get_cur_pr(&vcpu_e500->vcpu), 1); | |
230 | preempt_enable(); | |
231 | } | |
232 | ||
0164c0f0 | 233 | static inline unsigned int gtlb0_get_next_victim( |
bc8080cb HB |
234 | struct kvmppc_vcpu_e500 *vcpu_e500) |
235 | { | |
236 | unsigned int victim; | |
237 | ||
08b7fa92 | 238 | victim = vcpu_e500->gtlb_nv[0]++; |
dc83b8bc | 239 | if (unlikely(vcpu_e500->gtlb_nv[0] >= vcpu_e500->gtlb_params[0].ways)) |
08b7fa92 | 240 | vcpu_e500->gtlb_nv[0] = 0; |
bc8080cb HB |
241 | |
242 | return victim; | |
243 | } | |
244 | ||
245 | static inline unsigned int tlb1_max_shadow_size(void) | |
246 | { | |
a4cd8b23 | 247 | /* reserve one entry for magic page */ |
0164c0f0 | 248 | return host_tlb_params[1].entries - tlbcam_index - 1; |
bc8080cb HB |
249 | } |
250 | ||
dc83b8bc | 251 | static inline int tlbe_is_writable(struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb | 252 | { |
dc83b8bc | 253 | return tlbe->mas7_3 & (MAS3_SW|MAS3_UW); |
bc8080cb HB |
254 | } |
255 | ||
256 | static inline u32 e500_shadow_mas3_attrib(u32 mas3, int usermode) | |
257 | { | |
258 | /* Mask off reserved bits. */ | |
259 | mas3 &= MAS3_ATTRIB_MASK; | |
260 | ||
261 | if (!usermode) { | |
262 | /* Guest is in supervisor mode, | |
263 | * so we need to translate guest | |
264 | * supervisor permissions into user permissions. */ | |
265 | mas3 &= ~E500_TLB_USER_PERM_MASK; | |
266 | mas3 |= (mas3 & E500_TLB_SUPER_PERM_MASK) << 1; | |
267 | } | |
268 | ||
269 | return mas3 | E500_TLB_SUPER_PERM_MASK; | |
270 | } | |
271 | ||
272 | static inline u32 e500_shadow_mas2_attrib(u32 mas2, int usermode) | |
273 | { | |
046a48b3 LY |
274 | #ifdef CONFIG_SMP |
275 | return (mas2 & MAS2_ATTRIB_MASK) | MAS2_M; | |
276 | #else | |
bc8080cb | 277 | return mas2 & MAS2_ATTRIB_MASK; |
046a48b3 | 278 | #endif |
bc8080cb HB |
279 | } |
280 | ||
281 | /* | |
282 | * writing shadow tlb entry to host TLB | |
283 | */ | |
dc83b8bc SW |
284 | static inline void __write_host_tlbe(struct kvm_book3e_206_tlb_entry *stlbe, |
285 | uint32_t mas0) | |
bc8080cb | 286 | { |
0ef30995 SW |
287 | unsigned long flags; |
288 | ||
289 | local_irq_save(flags); | |
290 | mtspr(SPRN_MAS0, mas0); | |
bc8080cb | 291 | mtspr(SPRN_MAS1, stlbe->mas1); |
dc83b8bc SW |
292 | mtspr(SPRN_MAS2, (unsigned long)stlbe->mas2); |
293 | mtspr(SPRN_MAS3, (u32)stlbe->mas7_3); | |
294 | mtspr(SPRN_MAS7, (u32)(stlbe->mas7_3 >> 32)); | |
0ef30995 SW |
295 | asm volatile("isync; tlbwe" : : : "memory"); |
296 | local_irq_restore(flags); | |
bc8080cb HB |
297 | } |
298 | ||
0164c0f0 | 299 | /* esel is index into set, not whole array */ |
bc8080cb | 300 | static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500, |
dc83b8bc | 301 | int tlbsel, int esel, struct kvm_book3e_206_tlb_entry *stlbe) |
bc8080cb | 302 | { |
bc8080cb | 303 | if (tlbsel == 0) { |
dc83b8bc SW |
304 | int way = esel & (vcpu_e500->gtlb_params[0].ways - 1); |
305 | __write_host_tlbe(stlbe, MAS0_TLBSEL(0) | MAS0_ESEL(way)); | |
bc8080cb | 306 | } else { |
0ef30995 SW |
307 | __write_host_tlbe(stlbe, |
308 | MAS0_TLBSEL(1) | | |
309 | MAS0_ESEL(to_htlb1_esel(esel))); | |
bc8080cb | 310 | } |
08b7fa92 | 311 | trace_kvm_stlb_write(index_of(tlbsel, esel), stlbe->mas1, stlbe->mas2, |
dc83b8bc | 312 | (u32)stlbe->mas7_3, (u32)(stlbe->mas7_3 >> 32)); |
bc8080cb HB |
313 | } |
314 | ||
a4cd8b23 SW |
315 | void kvmppc_map_magic(struct kvm_vcpu *vcpu) |
316 | { | |
dd9ebf1f | 317 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); |
dc83b8bc | 318 | struct kvm_book3e_206_tlb_entry magic; |
a4cd8b23 | 319 | ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK; |
dd9ebf1f | 320 | unsigned int stid; |
a4cd8b23 SW |
321 | pfn_t pfn; |
322 | ||
323 | pfn = (pfn_t)virt_to_phys((void *)shared_page) >> PAGE_SHIFT; | |
324 | get_page(pfn_to_page(pfn)); | |
325 | ||
dd9ebf1f LY |
326 | preempt_disable(); |
327 | stid = kvmppc_e500_get_sid(vcpu_e500, 0, 0, 0, 0); | |
328 | ||
329 | magic.mas1 = MAS1_VALID | MAS1_TS | MAS1_TID(stid) | | |
a4cd8b23 SW |
330 | MAS1_TSIZE(BOOK3E_PAGESZ_4K); |
331 | magic.mas2 = vcpu->arch.magic_page_ea | MAS2_M; | |
dc83b8bc SW |
332 | magic.mas7_3 = ((u64)pfn << PAGE_SHIFT) | |
333 | MAS3_SW | MAS3_SR | MAS3_UW | MAS3_UR; | |
a4cd8b23 SW |
334 | |
335 | __write_host_tlbe(&magic, MAS0_TLBSEL(1) | MAS0_ESEL(tlbcam_index)); | |
dd9ebf1f | 336 | preempt_enable(); |
a4cd8b23 SW |
337 | } |
338 | ||
bc8080cb HB |
339 | void kvmppc_e500_tlb_load(struct kvm_vcpu *vcpu, int cpu) |
340 | { | |
dd9ebf1f LY |
341 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); |
342 | ||
343 | /* Shadow PID may be expired on local core */ | |
344 | kvmppc_e500_recalc_shadow_pid(vcpu_e500); | |
bc8080cb HB |
345 | } |
346 | ||
347 | void kvmppc_e500_tlb_put(struct kvm_vcpu *vcpu) | |
348 | { | |
dd9ebf1f LY |
349 | } |
350 | ||
0164c0f0 SW |
351 | static void inval_gtlbe_on_host(struct kvmppc_vcpu_e500 *vcpu_e500, |
352 | int tlbsel, int esel) | |
dd9ebf1f | 353 | { |
dc83b8bc SW |
354 | struct kvm_book3e_206_tlb_entry *gtlbe = |
355 | get_entry(vcpu_e500, tlbsel, esel); | |
dd9ebf1f LY |
356 | struct vcpu_id_table *idt = vcpu_e500->idt; |
357 | unsigned int pr, tid, ts, pid; | |
358 | u32 val, eaddr; | |
359 | unsigned long flags; | |
360 | ||
361 | ts = get_tlb_ts(gtlbe); | |
362 | tid = get_tlb_tid(gtlbe); | |
363 | ||
364 | preempt_disable(); | |
365 | ||
366 | /* One guest ID may be mapped to two shadow IDs */ | |
367 | for (pr = 0; pr < 2; pr++) { | |
368 | /* | |
369 | * The shadow PID can have a valid mapping on at most one | |
370 | * host CPU. In the common case, it will be valid on this | |
371 | * CPU, in which case (for TLB0) we do a local invalidation | |
372 | * of the specific address. | |
373 | * | |
374 | * If the shadow PID is not valid on the current host CPU, or | |
375 | * if we're invalidating a TLB1 entry, we invalidate the | |
376 | * entire shadow PID. | |
377 | */ | |
378 | if (tlbsel == 1 || | |
379 | (pid = local_sid_lookup(&idt->id[ts][tid][pr])) <= 0) { | |
380 | kvmppc_e500_id_table_reset_one(vcpu_e500, ts, tid, pr); | |
381 | continue; | |
382 | } | |
383 | ||
384 | /* | |
385 | * The guest is invalidating a TLB0 entry which is in a PID | |
386 | * that has a valid shadow mapping on this host CPU. We | |
387 | * search host TLB0 to invalidate it's shadow TLB entry, | |
388 | * similar to __tlbil_va except that we need to look in AS1. | |
389 | */ | |
390 | val = (pid << MAS6_SPID_SHIFT) | MAS6_SAS; | |
391 | eaddr = get_tlb_eaddr(gtlbe); | |
392 | ||
393 | local_irq_save(flags); | |
394 | ||
395 | mtspr(SPRN_MAS6, val); | |
396 | asm volatile("tlbsx 0, %[eaddr]" : : [eaddr] "r" (eaddr)); | |
397 | val = mfspr(SPRN_MAS1); | |
398 | if (val & MAS1_VALID) { | |
399 | mtspr(SPRN_MAS1, val & ~MAS1_VALID); | |
400 | asm volatile("tlbwe"); | |
401 | } | |
402 | ||
403 | local_irq_restore(flags); | |
404 | } | |
405 | ||
406 | preempt_enable(); | |
bc8080cb HB |
407 | } |
408 | ||
0164c0f0 SW |
409 | static int tlb0_set_base(gva_t addr, int sets, int ways) |
410 | { | |
411 | int set_base; | |
412 | ||
413 | set_base = (addr >> PAGE_SHIFT) & (sets - 1); | |
414 | set_base *= ways; | |
415 | ||
416 | return set_base; | |
417 | } | |
418 | ||
419 | static int gtlb0_set_base(struct kvmppc_vcpu_e500 *vcpu_e500, gva_t addr) | |
420 | { | |
dc83b8bc SW |
421 | return tlb0_set_base(addr, vcpu_e500->gtlb_params[0].sets, |
422 | vcpu_e500->gtlb_params[0].ways); | |
0164c0f0 SW |
423 | } |
424 | ||
425 | static int htlb0_set_base(gva_t addr) | |
426 | { | |
427 | return tlb0_set_base(addr, host_tlb_params[0].sets, | |
428 | host_tlb_params[0].ways); | |
429 | } | |
430 | ||
b5904972 | 431 | static unsigned int get_tlb_esel(struct kvm_vcpu *vcpu, int tlbsel) |
0164c0f0 | 432 | { |
b5904972 SW |
433 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); |
434 | int esel = get_tlb_esel_bit(vcpu); | |
0164c0f0 SW |
435 | |
436 | if (tlbsel == 0) { | |
dc83b8bc | 437 | esel &= vcpu_e500->gtlb_params[0].ways - 1; |
b5904972 | 438 | esel += gtlb0_set_base(vcpu_e500, vcpu->arch.shared->mas2); |
0164c0f0 | 439 | } else { |
dc83b8bc | 440 | esel &= vcpu_e500->gtlb_params[tlbsel].entries - 1; |
0164c0f0 SW |
441 | } |
442 | ||
443 | return esel; | |
444 | } | |
445 | ||
bc8080cb HB |
446 | /* Search the guest TLB for a matching entry. */ |
447 | static int kvmppc_e500_tlb_index(struct kvmppc_vcpu_e500 *vcpu_e500, | |
448 | gva_t eaddr, int tlbsel, unsigned int pid, int as) | |
449 | { | |
dc83b8bc SW |
450 | int size = vcpu_e500->gtlb_params[tlbsel].entries; |
451 | unsigned int set_base, offset; | |
bc8080cb HB |
452 | int i; |
453 | ||
1aee47a0 | 454 | if (tlbsel == 0) { |
0164c0f0 | 455 | set_base = gtlb0_set_base(vcpu_e500, eaddr); |
dc83b8bc | 456 | size = vcpu_e500->gtlb_params[0].ways; |
1aee47a0 SW |
457 | } else { |
458 | set_base = 0; | |
459 | } | |
460 | ||
dc83b8bc SW |
461 | offset = vcpu_e500->gtlb_offset[tlbsel]; |
462 | ||
1aee47a0 | 463 | for (i = 0; i < size; i++) { |
dc83b8bc SW |
464 | struct kvm_book3e_206_tlb_entry *tlbe = |
465 | &vcpu_e500->gtlb_arch[offset + set_base + i]; | |
bc8080cb HB |
466 | unsigned int tid; |
467 | ||
468 | if (eaddr < get_tlb_eaddr(tlbe)) | |
469 | continue; | |
470 | ||
471 | if (eaddr > get_tlb_end(tlbe)) | |
472 | continue; | |
473 | ||
474 | tid = get_tlb_tid(tlbe); | |
475 | if (tid && (tid != pid)) | |
476 | continue; | |
477 | ||
478 | if (!get_tlb_v(tlbe)) | |
479 | continue; | |
480 | ||
481 | if (get_tlb_ts(tlbe) != as && as != -1) | |
482 | continue; | |
483 | ||
1aee47a0 | 484 | return set_base + i; |
bc8080cb HB |
485 | } |
486 | ||
487 | return -1; | |
488 | } | |
489 | ||
0164c0f0 | 490 | static inline void kvmppc_e500_ref_setup(struct tlbe_ref *ref, |
dc83b8bc | 491 | struct kvm_book3e_206_tlb_entry *gtlbe, |
0164c0f0 | 492 | pfn_t pfn) |
bc8080cb | 493 | { |
0164c0f0 SW |
494 | ref->pfn = pfn; |
495 | ref->flags = E500_TLB_VALID; | |
bc8080cb | 496 | |
08b7fa92 | 497 | if (tlbe_is_writable(gtlbe)) |
0164c0f0 | 498 | ref->flags |= E500_TLB_DIRTY; |
bc8080cb HB |
499 | } |
500 | ||
0164c0f0 | 501 | static inline void kvmppc_e500_ref_release(struct tlbe_ref *ref) |
bc8080cb | 502 | { |
0164c0f0 SW |
503 | if (ref->flags & E500_TLB_VALID) { |
504 | if (ref->flags & E500_TLB_DIRTY) | |
505 | kvm_release_pfn_dirty(ref->pfn); | |
08b7fa92 | 506 | else |
0164c0f0 SW |
507 | kvm_release_pfn_clean(ref->pfn); |
508 | ||
509 | ref->flags = 0; | |
510 | } | |
511 | } | |
512 | ||
513 | static void clear_tlb_privs(struct kvmppc_vcpu_e500 *vcpu_e500) | |
514 | { | |
515 | int tlbsel = 0; | |
516 | int i; | |
bc8080cb | 517 | |
dc83b8bc | 518 | for (i = 0; i < vcpu_e500->gtlb_params[tlbsel].entries; i++) { |
0164c0f0 SW |
519 | struct tlbe_ref *ref = |
520 | &vcpu_e500->gtlb_priv[tlbsel][i].ref; | |
521 | kvmppc_e500_ref_release(ref); | |
08b7fa92 | 522 | } |
bc8080cb HB |
523 | } |
524 | ||
0164c0f0 SW |
525 | static void clear_tlb_refs(struct kvmppc_vcpu_e500 *vcpu_e500) |
526 | { | |
527 | int stlbsel = 1; | |
528 | int i; | |
529 | ||
dc83b8bc SW |
530 | kvmppc_e500_id_table_reset_all(vcpu_e500); |
531 | ||
0164c0f0 SW |
532 | for (i = 0; i < host_tlb_params[stlbsel].entries; i++) { |
533 | struct tlbe_ref *ref = | |
534 | &vcpu_e500->tlb_refs[stlbsel][i]; | |
535 | kvmppc_e500_ref_release(ref); | |
536 | } | |
537 | ||
538 | clear_tlb_privs(vcpu_e500); | |
539 | } | |
540 | ||
bc8080cb HB |
541 | static inline void kvmppc_e500_deliver_tlb_miss(struct kvm_vcpu *vcpu, |
542 | unsigned int eaddr, int as) | |
543 | { | |
544 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
545 | unsigned int victim, pidsel, tsized; | |
546 | int tlbsel; | |
547 | ||
fb2838d4 | 548 | /* since we only have two TLBs, only lower bit is used. */ |
b5904972 | 549 | tlbsel = (vcpu->arch.shared->mas4 >> 28) & 0x1; |
0164c0f0 | 550 | victim = (tlbsel == 0) ? gtlb0_get_next_victim(vcpu_e500) : 0; |
b5904972 SW |
551 | pidsel = (vcpu->arch.shared->mas4 >> 16) & 0xf; |
552 | tsized = (vcpu->arch.shared->mas4 >> 7) & 0x1f; | |
bc8080cb | 553 | |
b5904972 | 554 | vcpu->arch.shared->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(victim) |
08b7fa92 | 555 | | MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]); |
b5904972 | 556 | vcpu->arch.shared->mas1 = MAS1_VALID | (as ? MAS1_TS : 0) |
bc8080cb HB |
557 | | MAS1_TID(vcpu_e500->pid[pidsel]) |
558 | | MAS1_TSIZE(tsized); | |
b5904972 SW |
559 | vcpu->arch.shared->mas2 = (eaddr & MAS2_EPN) |
560 | | (vcpu->arch.shared->mas4 & MAS2_ATTRIB_MASK); | |
561 | vcpu->arch.shared->mas7_3 &= MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3; | |
562 | vcpu->arch.shared->mas6 = (vcpu->arch.shared->mas6 & MAS6_SPID1) | |
bc8080cb HB |
563 | | (get_cur_pid(vcpu) << 16) |
564 | | (as ? MAS6_SAS : 0); | |
bc8080cb HB |
565 | } |
566 | ||
3bf3cdcc | 567 | /* TID must be supplied by the caller */ |
dc83b8bc SW |
568 | static inline void kvmppc_e500_setup_stlbe( |
569 | struct kvmppc_vcpu_e500 *vcpu_e500, | |
570 | struct kvm_book3e_206_tlb_entry *gtlbe, | |
571 | int tsize, struct tlbe_ref *ref, u64 gvaddr, | |
572 | struct kvm_book3e_206_tlb_entry *stlbe) | |
08b7fa92 | 573 | { |
0164c0f0 SW |
574 | pfn_t pfn = ref->pfn; |
575 | ||
576 | BUG_ON(!(ref->flags & E500_TLB_VALID)); | |
08b7fa92 LY |
577 | |
578 | /* Force TS=1 IPROT=0 for all guest mappings. */ | |
3bf3cdcc | 579 | stlbe->mas1 = MAS1_TSIZE(tsize) | MAS1_TS | MAS1_VALID; |
08b7fa92 LY |
580 | stlbe->mas2 = (gvaddr & MAS2_EPN) |
581 | | e500_shadow_mas2_attrib(gtlbe->mas2, | |
582 | vcpu_e500->vcpu.arch.shared->msr & MSR_PR); | |
dc83b8bc SW |
583 | stlbe->mas7_3 = ((u64)pfn << PAGE_SHIFT) |
584 | | e500_shadow_mas3_attrib(gtlbe->mas7_3, | |
08b7fa92 | 585 | vcpu_e500->vcpu.arch.shared->msr & MSR_PR); |
08b7fa92 LY |
586 | } |
587 | ||
0164c0f0 | 588 | /* sesel is an index into the entire array, not just the set */ |
bc8080cb | 589 | static inline void kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, |
dc83b8bc SW |
590 | u64 gvaddr, gfn_t gfn, struct kvm_book3e_206_tlb_entry *gtlbe, |
591 | int tlbsel, int sesel, struct kvm_book3e_206_tlb_entry *stlbe, | |
592 | struct tlbe_ref *ref) | |
bc8080cb | 593 | { |
9973d54e | 594 | struct kvm_memory_slot *slot; |
9973d54e SW |
595 | unsigned long pfn, hva; |
596 | int pfnmap = 0; | |
597 | int tsize = BOOK3E_PAGESZ_4K; | |
bc8080cb | 598 | |
59c1f4e3 SW |
599 | /* |
600 | * Translate guest physical to true physical, acquiring | |
601 | * a page reference if it is normal, non-reserved memory. | |
9973d54e SW |
602 | * |
603 | * gfn_to_memslot() must succeed because otherwise we wouldn't | |
604 | * have gotten this far. Eventually we should just pass the slot | |
605 | * pointer through from the first lookup. | |
59c1f4e3 | 606 | */ |
9973d54e SW |
607 | slot = gfn_to_memslot(vcpu_e500->vcpu.kvm, gfn); |
608 | hva = gfn_to_hva_memslot(slot, gfn); | |
609 | ||
610 | if (tlbsel == 1) { | |
611 | struct vm_area_struct *vma; | |
612 | down_read(¤t->mm->mmap_sem); | |
613 | ||
614 | vma = find_vma(current->mm, hva); | |
615 | if (vma && hva >= vma->vm_start && | |
616 | (vma->vm_flags & VM_PFNMAP)) { | |
617 | /* | |
618 | * This VMA is a physically contiguous region (e.g. | |
619 | * /dev/mem) that bypasses normal Linux page | |
620 | * management. Find the overlap between the | |
621 | * vma and the memslot. | |
622 | */ | |
623 | ||
624 | unsigned long start, end; | |
625 | unsigned long slot_start, slot_end; | |
626 | ||
627 | pfnmap = 1; | |
628 | ||
629 | start = vma->vm_pgoff; | |
630 | end = start + | |
631 | ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT); | |
632 | ||
633 | pfn = start + ((hva - vma->vm_start) >> PAGE_SHIFT); | |
634 | ||
635 | slot_start = pfn - (gfn - slot->base_gfn); | |
636 | slot_end = slot_start + slot->npages; | |
637 | ||
638 | if (start < slot_start) | |
639 | start = slot_start; | |
640 | if (end > slot_end) | |
641 | end = slot_end; | |
642 | ||
643 | tsize = (gtlbe->mas1 & MAS1_TSIZE_MASK) >> | |
644 | MAS1_TSIZE_SHIFT; | |
645 | ||
646 | /* | |
647 | * e500 doesn't implement the lowest tsize bit, | |
648 | * or 1K pages. | |
649 | */ | |
650 | tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1); | |
651 | ||
652 | /* | |
653 | * Now find the largest tsize (up to what the guest | |
654 | * requested) that will cover gfn, stay within the | |
655 | * range, and for which gfn and pfn are mutually | |
656 | * aligned. | |
657 | */ | |
658 | ||
659 | for (; tsize > BOOK3E_PAGESZ_4K; tsize -= 2) { | |
660 | unsigned long gfn_start, gfn_end, tsize_pages; | |
661 | tsize_pages = 1 << (tsize - 2); | |
662 | ||
663 | gfn_start = gfn & ~(tsize_pages - 1); | |
664 | gfn_end = gfn_start + tsize_pages; | |
665 | ||
666 | if (gfn_start + pfn - gfn < start) | |
667 | continue; | |
668 | if (gfn_end + pfn - gfn > end) | |
669 | continue; | |
670 | if ((gfn & (tsize_pages - 1)) != | |
671 | (pfn & (tsize_pages - 1))) | |
672 | continue; | |
673 | ||
674 | gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1); | |
675 | pfn &= ~(tsize_pages - 1); | |
676 | break; | |
677 | } | |
95325e6b AG |
678 | } else if (vma && hva >= vma->vm_start && |
679 | (vma->vm_flags & VM_HUGETLB)) { | |
680 | unsigned long psize = vma_kernel_pagesize(vma); | |
681 | ||
682 | tsize = (gtlbe->mas1 & MAS1_TSIZE_MASK) >> | |
683 | MAS1_TSIZE_SHIFT; | |
684 | ||
685 | /* | |
686 | * Take the largest page size that satisfies both host | |
687 | * and guest mapping | |
688 | */ | |
689 | tsize = min(__ilog2(psize) - 10, tsize); | |
690 | ||
691 | /* | |
692 | * e500 doesn't implement the lowest tsize bit, | |
693 | * or 1K pages. | |
694 | */ | |
695 | tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1); | |
9973d54e SW |
696 | } |
697 | ||
698 | up_read(¤t->mm->mmap_sem); | |
699 | } | |
700 | ||
701 | if (likely(!pfnmap)) { | |
95325e6b | 702 | unsigned long tsize_pages = 1 << (tsize + 10 - PAGE_SHIFT); |
9973d54e SW |
703 | pfn = gfn_to_pfn_memslot(vcpu_e500->vcpu.kvm, slot, gfn); |
704 | if (is_error_pfn(pfn)) { | |
705 | printk(KERN_ERR "Couldn't get real page for gfn %lx!\n", | |
706 | (long)gfn); | |
707 | kvm_release_pfn_clean(pfn); | |
708 | return; | |
709 | } | |
95325e6b AG |
710 | |
711 | /* Align guest and physical address to page map boundaries */ | |
712 | pfn &= ~(tsize_pages - 1); | |
713 | gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1); | |
bc8080cb | 714 | } |
bc8080cb | 715 | |
0164c0f0 SW |
716 | /* Drop old ref and setup new one. */ |
717 | kvmppc_e500_ref_release(ref); | |
718 | kvmppc_e500_ref_setup(ref, gtlbe, pfn); | |
bc8080cb | 719 | |
0164c0f0 | 720 | kvmppc_e500_setup_stlbe(vcpu_e500, gtlbe, tsize, ref, gvaddr, stlbe); |
bc8080cb HB |
721 | } |
722 | ||
723 | /* XXX only map the one-one case, for now use TLB0 */ | |
08b7fa92 | 724 | static int kvmppc_e500_tlb0_map(struct kvmppc_vcpu_e500 *vcpu_e500, |
dc83b8bc SW |
725 | int esel, |
726 | struct kvm_book3e_206_tlb_entry *stlbe) | |
bc8080cb | 727 | { |
dc83b8bc | 728 | struct kvm_book3e_206_tlb_entry *gtlbe; |
0164c0f0 SW |
729 | struct tlbe_ref *ref; |
730 | int sesel = esel & (host_tlb_params[0].ways - 1); | |
731 | int sesel_base; | |
732 | gva_t ea; | |
bc8080cb | 733 | |
dc83b8bc | 734 | gtlbe = get_entry(vcpu_e500, 0, esel); |
0164c0f0 SW |
735 | ref = &vcpu_e500->gtlb_priv[0][esel].ref; |
736 | ||
737 | ea = get_tlb_eaddr(gtlbe); | |
738 | sesel_base = htlb0_set_base(ea); | |
bc8080cb HB |
739 | |
740 | kvmppc_e500_shadow_map(vcpu_e500, get_tlb_eaddr(gtlbe), | |
741 | get_tlb_raddr(gtlbe) >> PAGE_SHIFT, | |
0164c0f0 | 742 | gtlbe, 0, sesel_base + sesel, stlbe, ref); |
bc8080cb | 743 | |
0164c0f0 | 744 | return sesel; |
bc8080cb HB |
745 | } |
746 | ||
747 | /* Caller must ensure that the specified guest TLB entry is safe to insert into | |
748 | * the shadow TLB. */ | |
749 | /* XXX for both one-one and one-to-many , for now use TLB1 */ | |
750 | static int kvmppc_e500_tlb1_map(struct kvmppc_vcpu_e500 *vcpu_e500, | |
dc83b8bc SW |
751 | u64 gvaddr, gfn_t gfn, struct kvm_book3e_206_tlb_entry *gtlbe, |
752 | struct kvm_book3e_206_tlb_entry *stlbe) | |
bc8080cb | 753 | { |
0164c0f0 | 754 | struct tlbe_ref *ref; |
bc8080cb HB |
755 | unsigned int victim; |
756 | ||
0164c0f0 | 757 | victim = vcpu_e500->host_tlb1_nv++; |
bc8080cb | 758 | |
0164c0f0 SW |
759 | if (unlikely(vcpu_e500->host_tlb1_nv >= tlb1_max_shadow_size())) |
760 | vcpu_e500->host_tlb1_nv = 0; | |
bc8080cb | 761 | |
0164c0f0 SW |
762 | ref = &vcpu_e500->tlb_refs[1][victim]; |
763 | kvmppc_e500_shadow_map(vcpu_e500, gvaddr, gfn, gtlbe, 1, | |
764 | victim, stlbe, ref); | |
bc8080cb HB |
765 | |
766 | return victim; | |
767 | } | |
768 | ||
dd9ebf1f | 769 | void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr) |
bc8080cb | 770 | { |
dd9ebf1f LY |
771 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); |
772 | ||
773 | /* Recalc shadow pid since MSR changes */ | |
774 | kvmppc_e500_recalc_shadow_pid(vcpu_e500); | |
bc8080cb HB |
775 | } |
776 | ||
08b7fa92 LY |
777 | static inline int kvmppc_e500_gtlbe_invalidate( |
778 | struct kvmppc_vcpu_e500 *vcpu_e500, | |
779 | int tlbsel, int esel) | |
bc8080cb | 780 | { |
dc83b8bc SW |
781 | struct kvm_book3e_206_tlb_entry *gtlbe = |
782 | get_entry(vcpu_e500, tlbsel, esel); | |
bc8080cb HB |
783 | |
784 | if (unlikely(get_tlb_iprot(gtlbe))) | |
785 | return -1; | |
786 | ||
bc8080cb HB |
787 | gtlbe->mas1 = 0; |
788 | ||
789 | return 0; | |
790 | } | |
791 | ||
b0a1835d LY |
792 | int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, ulong value) |
793 | { | |
794 | int esel; | |
795 | ||
796 | if (value & MMUCSR0_TLB0FI) | |
dc83b8bc | 797 | for (esel = 0; esel < vcpu_e500->gtlb_params[0].entries; esel++) |
b0a1835d LY |
798 | kvmppc_e500_gtlbe_invalidate(vcpu_e500, 0, esel); |
799 | if (value & MMUCSR0_TLB1FI) | |
dc83b8bc | 800 | for (esel = 0; esel < vcpu_e500->gtlb_params[1].entries; esel++) |
b0a1835d LY |
801 | kvmppc_e500_gtlbe_invalidate(vcpu_e500, 1, esel); |
802 | ||
dd9ebf1f LY |
803 | /* Invalidate all vcpu id mappings */ |
804 | kvmppc_e500_id_table_reset_all(vcpu_e500); | |
b0a1835d LY |
805 | |
806 | return EMULATE_DONE; | |
807 | } | |
808 | ||
bc8080cb HB |
809 | int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb) |
810 | { | |
811 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
812 | unsigned int ia; | |
813 | int esel, tlbsel; | |
814 | gva_t ea; | |
815 | ||
8e5b26b5 | 816 | ea = ((ra) ? kvmppc_get_gpr(vcpu, ra) : 0) + kvmppc_get_gpr(vcpu, rb); |
bc8080cb HB |
817 | |
818 | ia = (ea >> 2) & 0x1; | |
819 | ||
fb2838d4 | 820 | /* since we only have two TLBs, only lower bit is used. */ |
bc8080cb HB |
821 | tlbsel = (ea >> 3) & 0x1; |
822 | ||
823 | if (ia) { | |
824 | /* invalidate all entries */ | |
dc83b8bc SW |
825 | for (esel = 0; esel < vcpu_e500->gtlb_params[tlbsel].entries; |
826 | esel++) | |
bc8080cb HB |
827 | kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel); |
828 | } else { | |
829 | ea &= 0xfffff000; | |
830 | esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel, | |
831 | get_cur_pid(vcpu), -1); | |
832 | if (esel >= 0) | |
833 | kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel); | |
834 | } | |
835 | ||
dd9ebf1f LY |
836 | /* Invalidate all vcpu id mappings */ |
837 | kvmppc_e500_id_table_reset_all(vcpu_e500); | |
bc8080cb HB |
838 | |
839 | return EMULATE_DONE; | |
840 | } | |
841 | ||
842 | int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu) | |
843 | { | |
844 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
845 | int tlbsel, esel; | |
dc83b8bc | 846 | struct kvm_book3e_206_tlb_entry *gtlbe; |
bc8080cb | 847 | |
b5904972 SW |
848 | tlbsel = get_tlb_tlbsel(vcpu); |
849 | esel = get_tlb_esel(vcpu, tlbsel); | |
bc8080cb | 850 | |
dc83b8bc | 851 | gtlbe = get_entry(vcpu_e500, tlbsel, esel); |
b5904972 SW |
852 | vcpu->arch.shared->mas0 &= ~MAS0_NV(~0); |
853 | vcpu->arch.shared->mas0 |= MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]); | |
854 | vcpu->arch.shared->mas1 = gtlbe->mas1; | |
855 | vcpu->arch.shared->mas2 = gtlbe->mas2; | |
856 | vcpu->arch.shared->mas7_3 = gtlbe->mas7_3; | |
bc8080cb HB |
857 | |
858 | return EMULATE_DONE; | |
859 | } | |
860 | ||
861 | int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, int rb) | |
862 | { | |
863 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
b5904972 SW |
864 | int as = !!get_cur_sas(vcpu); |
865 | unsigned int pid = get_cur_spid(vcpu); | |
bc8080cb | 866 | int esel, tlbsel; |
dc83b8bc | 867 | struct kvm_book3e_206_tlb_entry *gtlbe = NULL; |
bc8080cb HB |
868 | gva_t ea; |
869 | ||
8e5b26b5 | 870 | ea = kvmppc_get_gpr(vcpu, rb); |
bc8080cb HB |
871 | |
872 | for (tlbsel = 0; tlbsel < 2; tlbsel++) { | |
873 | esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel, pid, as); | |
874 | if (esel >= 0) { | |
dc83b8bc | 875 | gtlbe = get_entry(vcpu_e500, tlbsel, esel); |
bc8080cb HB |
876 | break; |
877 | } | |
878 | } | |
879 | ||
880 | if (gtlbe) { | |
303b7c97 SW |
881 | esel &= vcpu_e500->gtlb_params[tlbsel].ways - 1; |
882 | ||
b5904972 | 883 | vcpu->arch.shared->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(esel) |
08b7fa92 | 884 | | MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]); |
b5904972 SW |
885 | vcpu->arch.shared->mas1 = gtlbe->mas1; |
886 | vcpu->arch.shared->mas2 = gtlbe->mas2; | |
887 | vcpu->arch.shared->mas7_3 = gtlbe->mas7_3; | |
bc8080cb HB |
888 | } else { |
889 | int victim; | |
890 | ||
fb2838d4 | 891 | /* since we only have two TLBs, only lower bit is used. */ |
b5904972 | 892 | tlbsel = vcpu->arch.shared->mas4 >> 28 & 0x1; |
0164c0f0 | 893 | victim = (tlbsel == 0) ? gtlb0_get_next_victim(vcpu_e500) : 0; |
bc8080cb | 894 | |
b5904972 SW |
895 | vcpu->arch.shared->mas0 = MAS0_TLBSEL(tlbsel) |
896 | | MAS0_ESEL(victim) | |
08b7fa92 | 897 | | MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]); |
b5904972 SW |
898 | vcpu->arch.shared->mas1 = |
899 | (vcpu->arch.shared->mas6 & MAS6_SPID0) | |
900 | | (vcpu->arch.shared->mas6 & (MAS6_SAS ? MAS1_TS : 0)) | |
901 | | (vcpu->arch.shared->mas4 & MAS4_TSIZED(~0)); | |
902 | vcpu->arch.shared->mas2 &= MAS2_EPN; | |
903 | vcpu->arch.shared->mas2 |= vcpu->arch.shared->mas4 & | |
904 | MAS2_ATTRIB_MASK; | |
905 | vcpu->arch.shared->mas7_3 &= MAS3_U0 | MAS3_U1 | | |
906 | MAS3_U2 | MAS3_U3; | |
bc8080cb HB |
907 | } |
908 | ||
49ea0695 | 909 | kvmppc_set_exit_type(vcpu, EMULATED_TLBSX_EXITS); |
bc8080cb HB |
910 | return EMULATE_DONE; |
911 | } | |
912 | ||
3bf3cdcc SW |
913 | /* sesel is index into the set, not the whole array */ |
914 | static void write_stlbe(struct kvmppc_vcpu_e500 *vcpu_e500, | |
dc83b8bc SW |
915 | struct kvm_book3e_206_tlb_entry *gtlbe, |
916 | struct kvm_book3e_206_tlb_entry *stlbe, | |
3bf3cdcc SW |
917 | int stlbsel, int sesel) |
918 | { | |
919 | int stid; | |
920 | ||
921 | preempt_disable(); | |
922 | stid = kvmppc_e500_get_sid(vcpu_e500, get_tlb_ts(gtlbe), | |
923 | get_tlb_tid(gtlbe), | |
924 | get_cur_pr(&vcpu_e500->vcpu), 0); | |
925 | ||
926 | stlbe->mas1 |= MAS1_TID(stid); | |
927 | write_host_tlbe(vcpu_e500, stlbsel, sesel, stlbe); | |
928 | preempt_enable(); | |
929 | } | |
930 | ||
bc8080cb HB |
931 | int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu) |
932 | { | |
933 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
dc83b8bc | 934 | struct kvm_book3e_206_tlb_entry *gtlbe; |
08b7fa92 | 935 | int tlbsel, esel; |
bc8080cb | 936 | |
b5904972 SW |
937 | tlbsel = get_tlb_tlbsel(vcpu); |
938 | esel = get_tlb_esel(vcpu, tlbsel); | |
bc8080cb | 939 | |
dc83b8bc | 940 | gtlbe = get_entry(vcpu_e500, tlbsel, esel); |
bc8080cb | 941 | |
dd9ebf1f | 942 | if (get_tlb_v(gtlbe)) |
0164c0f0 | 943 | inval_gtlbe_on_host(vcpu_e500, tlbsel, esel); |
bc8080cb | 944 | |
b5904972 SW |
945 | gtlbe->mas1 = vcpu->arch.shared->mas1; |
946 | gtlbe->mas2 = vcpu->arch.shared->mas2; | |
947 | gtlbe->mas7_3 = vcpu->arch.shared->mas7_3; | |
bc8080cb | 948 | |
b5904972 | 949 | trace_kvm_gtlb_write(vcpu->arch.shared->mas0, gtlbe->mas1, gtlbe->mas2, |
dc83b8bc | 950 | (u32)gtlbe->mas7_3, (u32)(gtlbe->mas7_3 >> 32)); |
bc8080cb HB |
951 | |
952 | /* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */ | |
953 | if (tlbe_is_host_safe(vcpu, gtlbe)) { | |
dc83b8bc | 954 | struct kvm_book3e_206_tlb_entry stlbe; |
08b7fa92 LY |
955 | int stlbsel, sesel; |
956 | u64 eaddr; | |
957 | u64 raddr; | |
958 | ||
bc8080cb HB |
959 | switch (tlbsel) { |
960 | case 0: | |
961 | /* TLB0 */ | |
962 | gtlbe->mas1 &= ~MAS1_TSIZE(~0); | |
0cfb50e5 | 963 | gtlbe->mas1 |= MAS1_TSIZE(BOOK3E_PAGESZ_4K); |
bc8080cb HB |
964 | |
965 | stlbsel = 0; | |
08b7fa92 | 966 | sesel = kvmppc_e500_tlb0_map(vcpu_e500, esel, &stlbe); |
bc8080cb HB |
967 | |
968 | break; | |
969 | ||
970 | case 1: | |
971 | /* TLB1 */ | |
972 | eaddr = get_tlb_eaddr(gtlbe); | |
973 | raddr = get_tlb_raddr(gtlbe); | |
974 | ||
975 | /* Create a 4KB mapping on the host. | |
976 | * If the guest wanted a large page, | |
977 | * only the first 4KB is mapped here and the rest | |
978 | * are mapped on the fly. */ | |
979 | stlbsel = 1; | |
980 | sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr, | |
08b7fa92 | 981 | raddr >> PAGE_SHIFT, gtlbe, &stlbe); |
bc8080cb HB |
982 | break; |
983 | ||
984 | default: | |
985 | BUG(); | |
986 | } | |
3bf3cdcc SW |
987 | |
988 | write_stlbe(vcpu_e500, gtlbe, &stlbe, stlbsel, sesel); | |
bc8080cb HB |
989 | } |
990 | ||
49ea0695 | 991 | kvmppc_set_exit_type(vcpu, EMULATED_TLBWE_EXITS); |
bc8080cb HB |
992 | return EMULATE_DONE; |
993 | } | |
994 | ||
995 | int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr) | |
996 | { | |
666e7252 | 997 | unsigned int as = !!(vcpu->arch.shared->msr & MSR_IS); |
bc8080cb HB |
998 | |
999 | return kvmppc_e500_tlb_search(vcpu, eaddr, get_cur_pid(vcpu), as); | |
1000 | } | |
1001 | ||
1002 | int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr) | |
1003 | { | |
666e7252 | 1004 | unsigned int as = !!(vcpu->arch.shared->msr & MSR_DS); |
bc8080cb HB |
1005 | |
1006 | return kvmppc_e500_tlb_search(vcpu, eaddr, get_cur_pid(vcpu), as); | |
1007 | } | |
1008 | ||
1009 | void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu) | |
1010 | { | |
666e7252 | 1011 | unsigned int as = !!(vcpu->arch.shared->msr & MSR_IS); |
bc8080cb HB |
1012 | |
1013 | kvmppc_e500_deliver_tlb_miss(vcpu, vcpu->arch.pc, as); | |
1014 | } | |
1015 | ||
1016 | void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu) | |
1017 | { | |
666e7252 | 1018 | unsigned int as = !!(vcpu->arch.shared->msr & MSR_DS); |
bc8080cb HB |
1019 | |
1020 | kvmppc_e500_deliver_tlb_miss(vcpu, vcpu->arch.fault_dear, as); | |
1021 | } | |
1022 | ||
1023 | gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int index, | |
1024 | gva_t eaddr) | |
1025 | { | |
1026 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
dc83b8bc SW |
1027 | struct kvm_book3e_206_tlb_entry *gtlbe; |
1028 | u64 pgmask; | |
1029 | ||
1030 | gtlbe = get_entry(vcpu_e500, tlbsel_of(index), esel_of(index)); | |
1031 | pgmask = get_tlb_bytes(gtlbe) - 1; | |
bc8080cb HB |
1032 | |
1033 | return get_tlb_raddr(gtlbe) | (eaddr & pgmask); | |
1034 | } | |
1035 | ||
1036 | void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu) | |
1037 | { | |
bc8080cb HB |
1038 | } |
1039 | ||
1040 | void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr, | |
1041 | unsigned int index) | |
1042 | { | |
1043 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
08b7fa92 | 1044 | struct tlbe_priv *priv; |
dc83b8bc | 1045 | struct kvm_book3e_206_tlb_entry *gtlbe, stlbe; |
bc8080cb HB |
1046 | int tlbsel = tlbsel_of(index); |
1047 | int esel = esel_of(index); | |
1048 | int stlbsel, sesel; | |
1049 | ||
dc83b8bc | 1050 | gtlbe = get_entry(vcpu_e500, tlbsel, esel); |
08b7fa92 | 1051 | |
bc8080cb HB |
1052 | switch (tlbsel) { |
1053 | case 0: | |
1054 | stlbsel = 0; | |
0164c0f0 SW |
1055 | sesel = esel & (host_tlb_params[0].ways - 1); |
1056 | priv = &vcpu_e500->gtlb_priv[tlbsel][esel]; | |
08b7fa92 LY |
1057 | |
1058 | kvmppc_e500_setup_stlbe(vcpu_e500, gtlbe, BOOK3E_PAGESZ_4K, | |
0164c0f0 | 1059 | &priv->ref, eaddr, &stlbe); |
bc8080cb HB |
1060 | break; |
1061 | ||
1062 | case 1: { | |
1063 | gfn_t gfn = gpaddr >> PAGE_SHIFT; | |
bc8080cb HB |
1064 | |
1065 | stlbsel = 1; | |
08b7fa92 LY |
1066 | sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr, gfn, |
1067 | gtlbe, &stlbe); | |
bc8080cb HB |
1068 | break; |
1069 | } | |
1070 | ||
1071 | default: | |
1072 | BUG(); | |
1073 | break; | |
1074 | } | |
08b7fa92 | 1075 | |
3bf3cdcc | 1076 | write_stlbe(vcpu_e500, gtlbe, &stlbe, stlbsel, sesel); |
bc8080cb HB |
1077 | } |
1078 | ||
1079 | int kvmppc_e500_tlb_search(struct kvm_vcpu *vcpu, | |
1080 | gva_t eaddr, unsigned int pid, int as) | |
1081 | { | |
1082 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
1083 | int esel, tlbsel; | |
1084 | ||
1085 | for (tlbsel = 0; tlbsel < 2; tlbsel++) { | |
1086 | esel = kvmppc_e500_tlb_index(vcpu_e500, eaddr, tlbsel, pid, as); | |
1087 | if (esel >= 0) | |
1088 | return index_of(tlbsel, esel); | |
1089 | } | |
1090 | ||
1091 | return -1; | |
1092 | } | |
1093 | ||
5ce941ee SW |
1094 | void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid) |
1095 | { | |
1096 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
1097 | ||
dd9ebf1f LY |
1098 | if (vcpu->arch.pid != pid) { |
1099 | vcpu_e500->pid[0] = vcpu->arch.pid = pid; | |
1100 | kvmppc_e500_recalc_shadow_pid(vcpu_e500); | |
1101 | } | |
5ce941ee SW |
1102 | } |
1103 | ||
bc8080cb HB |
1104 | void kvmppc_e500_tlb_setup(struct kvmppc_vcpu_e500 *vcpu_e500) |
1105 | { | |
dc83b8bc | 1106 | struct kvm_book3e_206_tlb_entry *tlbe; |
bc8080cb HB |
1107 | |
1108 | /* Insert large initial mapping for guest. */ | |
dc83b8bc | 1109 | tlbe = get_entry(vcpu_e500, 1, 0); |
0cfb50e5 | 1110 | tlbe->mas1 = MAS1_VALID | MAS1_TSIZE(BOOK3E_PAGESZ_256M); |
bc8080cb | 1111 | tlbe->mas2 = 0; |
dc83b8bc | 1112 | tlbe->mas7_3 = E500_TLB_SUPER_PERM_MASK; |
bc8080cb HB |
1113 | |
1114 | /* 4K map for serial output. Used by kernel wrapper. */ | |
dc83b8bc | 1115 | tlbe = get_entry(vcpu_e500, 1, 1); |
0cfb50e5 | 1116 | tlbe->mas1 = MAS1_VALID | MAS1_TSIZE(BOOK3E_PAGESZ_4K); |
bc8080cb | 1117 | tlbe->mas2 = (0xe0004500 & 0xFFFFF000) | MAS2_I | MAS2_G; |
dc83b8bc SW |
1118 | tlbe->mas7_3 = (0xe0004500 & 0xFFFFF000) | E500_TLB_SUPER_PERM_MASK; |
1119 | } | |
1120 | ||
1121 | static void free_gtlb(struct kvmppc_vcpu_e500 *vcpu_e500) | |
1122 | { | |
1123 | int i; | |
1124 | ||
1125 | clear_tlb_refs(vcpu_e500); | |
1126 | kfree(vcpu_e500->gtlb_priv[0]); | |
1127 | kfree(vcpu_e500->gtlb_priv[1]); | |
1128 | ||
1129 | if (vcpu_e500->shared_tlb_pages) { | |
1130 | vfree((void *)(round_down((uintptr_t)vcpu_e500->gtlb_arch, | |
1131 | PAGE_SIZE))); | |
1132 | ||
1133 | for (i = 0; i < vcpu_e500->num_shared_tlb_pages; i++) { | |
1134 | set_page_dirty_lock(vcpu_e500->shared_tlb_pages[i]); | |
1135 | put_page(vcpu_e500->shared_tlb_pages[i]); | |
1136 | } | |
1137 | ||
1138 | vcpu_e500->num_shared_tlb_pages = 0; | |
1139 | vcpu_e500->shared_tlb_pages = NULL; | |
1140 | } else { | |
1141 | kfree(vcpu_e500->gtlb_arch); | |
1142 | } | |
1143 | ||
1144 | vcpu_e500->gtlb_arch = NULL; | |
1145 | } | |
1146 | ||
1147 | int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, | |
1148 | struct kvm_config_tlb *cfg) | |
1149 | { | |
1150 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
1151 | struct kvm_book3e_206_tlb_params params; | |
1152 | char *virt; | |
1153 | struct page **pages; | |
1154 | struct tlbe_priv *privs[2] = {}; | |
1155 | size_t array_len; | |
1156 | u32 sets; | |
1157 | int num_pages, ret, i; | |
1158 | ||
1159 | if (cfg->mmu_type != KVM_MMU_FSL_BOOKE_NOHV) | |
1160 | return -EINVAL; | |
1161 | ||
1162 | if (copy_from_user(¶ms, (void __user *)(uintptr_t)cfg->params, | |
1163 | sizeof(params))) | |
1164 | return -EFAULT; | |
1165 | ||
1166 | if (params.tlb_sizes[1] > 64) | |
1167 | return -EINVAL; | |
1168 | if (params.tlb_ways[1] != params.tlb_sizes[1]) | |
1169 | return -EINVAL; | |
1170 | if (params.tlb_sizes[2] != 0 || params.tlb_sizes[3] != 0) | |
1171 | return -EINVAL; | |
1172 | if (params.tlb_ways[2] != 0 || params.tlb_ways[3] != 0) | |
1173 | return -EINVAL; | |
1174 | ||
1175 | if (!is_power_of_2(params.tlb_ways[0])) | |
1176 | return -EINVAL; | |
1177 | ||
1178 | sets = params.tlb_sizes[0] >> ilog2(params.tlb_ways[0]); | |
1179 | if (!is_power_of_2(sets)) | |
1180 | return -EINVAL; | |
1181 | ||
1182 | array_len = params.tlb_sizes[0] + params.tlb_sizes[1]; | |
1183 | array_len *= sizeof(struct kvm_book3e_206_tlb_entry); | |
1184 | ||
1185 | if (cfg->array_len < array_len) | |
1186 | return -EINVAL; | |
1187 | ||
1188 | num_pages = DIV_ROUND_UP(cfg->array + array_len - 1, PAGE_SIZE) - | |
1189 | cfg->array / PAGE_SIZE; | |
1190 | pages = kmalloc(sizeof(struct page *) * num_pages, GFP_KERNEL); | |
1191 | if (!pages) | |
1192 | return -ENOMEM; | |
1193 | ||
1194 | ret = get_user_pages_fast(cfg->array, num_pages, 1, pages); | |
1195 | if (ret < 0) | |
1196 | goto err_pages; | |
1197 | ||
1198 | if (ret != num_pages) { | |
1199 | num_pages = ret; | |
1200 | ret = -EFAULT; | |
1201 | goto err_put_page; | |
1202 | } | |
1203 | ||
1204 | virt = vmap(pages, num_pages, VM_MAP, PAGE_KERNEL); | |
1205 | if (!virt) | |
1206 | goto err_put_page; | |
1207 | ||
1208 | privs[0] = kzalloc(sizeof(struct tlbe_priv) * params.tlb_sizes[0], | |
1209 | GFP_KERNEL); | |
1210 | privs[1] = kzalloc(sizeof(struct tlbe_priv) * params.tlb_sizes[1], | |
1211 | GFP_KERNEL); | |
1212 | ||
1213 | if (!privs[0] || !privs[1]) | |
1214 | goto err_put_page; | |
1215 | ||
1216 | free_gtlb(vcpu_e500); | |
1217 | ||
1218 | vcpu_e500->gtlb_priv[0] = privs[0]; | |
1219 | vcpu_e500->gtlb_priv[1] = privs[1]; | |
1220 | ||
1221 | vcpu_e500->gtlb_arch = (struct kvm_book3e_206_tlb_entry *) | |
1222 | (virt + (cfg->array & (PAGE_SIZE - 1))); | |
1223 | ||
1224 | vcpu_e500->gtlb_params[0].entries = params.tlb_sizes[0]; | |
1225 | vcpu_e500->gtlb_params[1].entries = params.tlb_sizes[1]; | |
1226 | ||
1227 | vcpu_e500->gtlb_offset[0] = 0; | |
1228 | vcpu_e500->gtlb_offset[1] = params.tlb_sizes[0]; | |
1229 | ||
7b11dc99 | 1230 | vcpu_e500->tlb0cfg &= ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); |
dc83b8bc SW |
1231 | if (params.tlb_sizes[0] <= 2048) |
1232 | vcpu_e500->tlb0cfg |= params.tlb_sizes[0]; | |
7b11dc99 | 1233 | vcpu_e500->tlb0cfg |= params.tlb_ways[0] << TLBnCFG_ASSOC_SHIFT; |
dc83b8bc | 1234 | |
7b11dc99 | 1235 | vcpu_e500->tlb1cfg &= ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); |
dc83b8bc | 1236 | vcpu_e500->tlb1cfg |= params.tlb_sizes[1]; |
7b11dc99 | 1237 | vcpu_e500->tlb1cfg |= params.tlb_ways[1] << TLBnCFG_ASSOC_SHIFT; |
dc83b8bc SW |
1238 | |
1239 | vcpu_e500->shared_tlb_pages = pages; | |
1240 | vcpu_e500->num_shared_tlb_pages = num_pages; | |
1241 | ||
1242 | vcpu_e500->gtlb_params[0].ways = params.tlb_ways[0]; | |
1243 | vcpu_e500->gtlb_params[0].sets = sets; | |
1244 | ||
1245 | vcpu_e500->gtlb_params[1].ways = params.tlb_sizes[1]; | |
1246 | vcpu_e500->gtlb_params[1].sets = 1; | |
1247 | ||
1248 | return 0; | |
1249 | ||
1250 | err_put_page: | |
1251 | kfree(privs[0]); | |
1252 | kfree(privs[1]); | |
1253 | ||
1254 | for (i = 0; i < num_pages; i++) | |
1255 | put_page(pages[i]); | |
1256 | ||
1257 | err_pages: | |
1258 | kfree(pages); | |
1259 | return ret; | |
1260 | } | |
1261 | ||
1262 | int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, | |
1263 | struct kvm_dirty_tlb *dirty) | |
1264 | { | |
1265 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
1266 | ||
1267 | clear_tlb_refs(vcpu_e500); | |
1268 | return 0; | |
bc8080cb HB |
1269 | } |
1270 | ||
1271 | int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500) | |
1272 | { | |
dc83b8bc SW |
1273 | int entry_size = sizeof(struct kvm_book3e_206_tlb_entry); |
1274 | int entries = KVM_E500_TLB0_SIZE + KVM_E500_TLB1_SIZE; | |
1275 | ||
0164c0f0 SW |
1276 | host_tlb_params[0].entries = mfspr(SPRN_TLB0CFG) & TLBnCFG_N_ENTRY; |
1277 | host_tlb_params[1].entries = mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY; | |
1278 | ||
1279 | /* | |
1280 | * This should never happen on real e500 hardware, but is | |
1281 | * architecturally possible -- e.g. in some weird nested | |
1282 | * virtualization case. | |
1283 | */ | |
1284 | if (host_tlb_params[0].entries == 0 || | |
1285 | host_tlb_params[1].entries == 0) { | |
1286 | pr_err("%s: need to know host tlb size\n", __func__); | |
1287 | return -ENODEV; | |
1288 | } | |
1289 | ||
1290 | host_tlb_params[0].ways = (mfspr(SPRN_TLB0CFG) & TLBnCFG_ASSOC) >> | |
1291 | TLBnCFG_ASSOC_SHIFT; | |
1292 | host_tlb_params[1].ways = host_tlb_params[1].entries; | |
1293 | ||
1294 | if (!is_power_of_2(host_tlb_params[0].entries) || | |
1295 | !is_power_of_2(host_tlb_params[0].ways) || | |
1296 | host_tlb_params[0].entries < host_tlb_params[0].ways || | |
1297 | host_tlb_params[0].ways == 0) { | |
1298 | pr_err("%s: bad tlb0 host config: %u entries %u ways\n", | |
1299 | __func__, host_tlb_params[0].entries, | |
1300 | host_tlb_params[0].ways); | |
1301 | return -ENODEV; | |
1302 | } | |
1303 | ||
1304 | host_tlb_params[0].sets = | |
1305 | host_tlb_params[0].entries / host_tlb_params[0].ways; | |
1306 | host_tlb_params[1].sets = 1; | |
bc8080cb | 1307 | |
dc83b8bc SW |
1308 | vcpu_e500->gtlb_params[0].entries = KVM_E500_TLB0_SIZE; |
1309 | vcpu_e500->gtlb_params[1].entries = KVM_E500_TLB1_SIZE; | |
bc8080cb | 1310 | |
dc83b8bc SW |
1311 | vcpu_e500->gtlb_params[0].ways = KVM_E500_TLB0_WAY_NUM; |
1312 | vcpu_e500->gtlb_params[0].sets = | |
1313 | KVM_E500_TLB0_SIZE / KVM_E500_TLB0_WAY_NUM; | |
1314 | ||
1315 | vcpu_e500->gtlb_params[1].ways = KVM_E500_TLB1_SIZE; | |
1316 | vcpu_e500->gtlb_params[1].sets = 1; | |
1317 | ||
1318 | vcpu_e500->gtlb_arch = kmalloc(entries * entry_size, GFP_KERNEL); | |
1319 | if (!vcpu_e500->gtlb_arch) | |
1320 | return -ENOMEM; | |
1321 | ||
1322 | vcpu_e500->gtlb_offset[0] = 0; | |
1323 | vcpu_e500->gtlb_offset[1] = KVM_E500_TLB0_SIZE; | |
0164c0f0 SW |
1324 | |
1325 | vcpu_e500->tlb_refs[0] = | |
1326 | kzalloc(sizeof(struct tlbe_ref) * host_tlb_params[0].entries, | |
1327 | GFP_KERNEL); | |
1328 | if (!vcpu_e500->tlb_refs[0]) | |
1329 | goto err; | |
1330 | ||
1331 | vcpu_e500->tlb_refs[1] = | |
1332 | kzalloc(sizeof(struct tlbe_ref) * host_tlb_params[1].entries, | |
1333 | GFP_KERNEL); | |
1334 | if (!vcpu_e500->tlb_refs[1]) | |
1335 | goto err; | |
1336 | ||
dc83b8bc SW |
1337 | vcpu_e500->gtlb_priv[0] = kzalloc(sizeof(struct tlbe_ref) * |
1338 | vcpu_e500->gtlb_params[0].entries, | |
1339 | GFP_KERNEL); | |
0164c0f0 SW |
1340 | if (!vcpu_e500->gtlb_priv[0]) |
1341 | goto err; | |
1342 | ||
dc83b8bc SW |
1343 | vcpu_e500->gtlb_priv[1] = kzalloc(sizeof(struct tlbe_ref) * |
1344 | vcpu_e500->gtlb_params[1].entries, | |
1345 | GFP_KERNEL); | |
0164c0f0 SW |
1346 | if (!vcpu_e500->gtlb_priv[1]) |
1347 | goto err; | |
bc8080cb | 1348 | |
dd9ebf1f | 1349 | if (kvmppc_e500_id_table_alloc(vcpu_e500) == NULL) |
0164c0f0 | 1350 | goto err; |
dd9ebf1f | 1351 | |
da15bf43 | 1352 | /* Init TLB configuration register */ |
7b11dc99 SW |
1353 | vcpu_e500->tlb0cfg = mfspr(SPRN_TLB0CFG) & |
1354 | ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); | |
dc83b8bc | 1355 | vcpu_e500->tlb0cfg |= vcpu_e500->gtlb_params[0].entries; |
7b11dc99 SW |
1356 | vcpu_e500->tlb0cfg |= |
1357 | vcpu_e500->gtlb_params[0].ways << TLBnCFG_ASSOC_SHIFT; | |
1358 | ||
1359 | vcpu_e500->tlb1cfg = mfspr(SPRN_TLB1CFG) & | |
1360 | ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); | |
1361 | vcpu_e500->tlb0cfg |= vcpu_e500->gtlb_params[1].entries; | |
1362 | vcpu_e500->tlb0cfg |= | |
1363 | vcpu_e500->gtlb_params[1].ways << TLBnCFG_ASSOC_SHIFT; | |
da15bf43 | 1364 | |
bc8080cb HB |
1365 | return 0; |
1366 | ||
0164c0f0 | 1367 | err: |
dc83b8bc | 1368 | free_gtlb(vcpu_e500); |
0164c0f0 SW |
1369 | kfree(vcpu_e500->tlb_refs[0]); |
1370 | kfree(vcpu_e500->tlb_refs[1]); | |
bc8080cb HB |
1371 | return -1; |
1372 | } | |
1373 | ||
1374 | void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500) | |
1375 | { | |
dc83b8bc | 1376 | free_gtlb(vcpu_e500); |
dd9ebf1f | 1377 | kvmppc_e500_id_table_free(vcpu_e500); |
0164c0f0 SW |
1378 | |
1379 | kfree(vcpu_e500->tlb_refs[0]); | |
1380 | kfree(vcpu_e500->tlb_refs[1]); | |
bc8080cb | 1381 | } |