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 | 28 | #include <asm/kvm_ppc.h> |
bc8080cb | 29 | |
9aa4dd5e | 30 | #include "../mm/mmu_decl.h" |
29a5a6f9 | 31 | #include "e500.h" |
46f43c6e | 32 | #include "trace.h" |
49ea0695 | 33 | #include "timing.h" |
bc8080cb | 34 | |
0164c0f0 | 35 | #define to_htlb1_esel(esel) (host_tlb_params[1].entries - (esel) - 1) |
bc8080cb | 36 | |
dd9ebf1f LY |
37 | struct id { |
38 | unsigned long val; | |
39 | struct id **pentry; | |
40 | }; | |
41 | ||
42 | #define NUM_TIDS 256 | |
43 | ||
44 | /* | |
45 | * This table provide mappings from: | |
46 | * (guestAS,guestTID,guestPR) --> ID of physical cpu | |
47 | * guestAS [0..1] | |
48 | * guestTID [0..255] | |
49 | * guestPR [0..1] | |
50 | * ID [1..255] | |
51 | * Each vcpu keeps one vcpu_id_table. | |
52 | */ | |
53 | struct vcpu_id_table { | |
54 | struct id id[2][NUM_TIDS][2]; | |
55 | }; | |
56 | ||
57 | /* | |
58 | * This table provide reversed mappings of vcpu_id_table: | |
59 | * ID --> address of vcpu_id_table item. | |
60 | * Each physical core has one pcpu_id_table. | |
61 | */ | |
62 | struct pcpu_id_table { | |
63 | struct id *entry[NUM_TIDS]; | |
64 | }; | |
65 | ||
66 | static DEFINE_PER_CPU(struct pcpu_id_table, pcpu_sids); | |
67 | ||
68 | /* This variable keeps last used shadow ID on local core. | |
69 | * The valid range of shadow ID is [1..255] */ | |
70 | static DEFINE_PER_CPU(unsigned long, pcpu_last_used_sid); | |
71 | ||
0164c0f0 | 72 | static struct kvmppc_e500_tlb_params host_tlb_params[E500_TLB_NUM]; |
bc8080cb | 73 | |
dc83b8bc SW |
74 | static struct kvm_book3e_206_tlb_entry *get_entry( |
75 | struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel, int entry) | |
76 | { | |
77 | int offset = vcpu_e500->gtlb_offset[tlbsel]; | |
78 | return &vcpu_e500->gtlb_arch[offset + entry]; | |
79 | } | |
80 | ||
dd9ebf1f LY |
81 | /* |
82 | * Allocate a free shadow id and setup a valid sid mapping in given entry. | |
83 | * A mapping is only valid when vcpu_id_table and pcpu_id_table are match. | |
84 | * | |
85 | * The caller must have preemption disabled, and keep it that way until | |
86 | * it has finished with the returned shadow id (either written into the | |
87 | * TLB or arch.shadow_pid, or discarded). | |
88 | */ | |
89 | static inline int local_sid_setup_one(struct id *entry) | |
90 | { | |
91 | unsigned long sid; | |
92 | int ret = -1; | |
93 | ||
94 | sid = ++(__get_cpu_var(pcpu_last_used_sid)); | |
95 | if (sid < NUM_TIDS) { | |
96 | __get_cpu_var(pcpu_sids).entry[sid] = entry; | |
97 | entry->val = sid; | |
98 | entry->pentry = &__get_cpu_var(pcpu_sids).entry[sid]; | |
99 | ret = sid; | |
100 | } | |
101 | ||
102 | /* | |
103 | * If sid == NUM_TIDS, we've run out of sids. We return -1, and | |
104 | * the caller will invalidate everything and start over. | |
105 | * | |
106 | * sid > NUM_TIDS indicates a race, which we disable preemption to | |
107 | * avoid. | |
108 | */ | |
109 | WARN_ON(sid > NUM_TIDS); | |
110 | ||
111 | return ret; | |
112 | } | |
113 | ||
114 | /* | |
115 | * Check if given entry contain a valid shadow id mapping. | |
116 | * An ID mapping is considered valid only if | |
117 | * both vcpu and pcpu know this mapping. | |
118 | * | |
119 | * The caller must have preemption disabled, and keep it that way until | |
120 | * it has finished with the returned shadow id (either written into the | |
121 | * TLB or arch.shadow_pid, or discarded). | |
122 | */ | |
123 | static inline int local_sid_lookup(struct id *entry) | |
124 | { | |
125 | if (entry && entry->val != 0 && | |
126 | __get_cpu_var(pcpu_sids).entry[entry->val] == entry && | |
127 | entry->pentry == &__get_cpu_var(pcpu_sids).entry[entry->val]) | |
128 | return entry->val; | |
129 | return -1; | |
130 | } | |
131 | ||
90b92a6f | 132 | /* Invalidate all id mappings on local core -- call with preempt disabled */ |
dd9ebf1f LY |
133 | static inline void local_sid_destroy_all(void) |
134 | { | |
dd9ebf1f LY |
135 | __get_cpu_var(pcpu_last_used_sid) = 0; |
136 | memset(&__get_cpu_var(pcpu_sids), 0, sizeof(__get_cpu_var(pcpu_sids))); | |
dd9ebf1f LY |
137 | } |
138 | ||
139 | static void *kvmppc_e500_id_table_alloc(struct kvmppc_vcpu_e500 *vcpu_e500) | |
140 | { | |
141 | vcpu_e500->idt = kzalloc(sizeof(struct vcpu_id_table), GFP_KERNEL); | |
142 | return vcpu_e500->idt; | |
143 | } | |
144 | ||
145 | static void kvmppc_e500_id_table_free(struct kvmppc_vcpu_e500 *vcpu_e500) | |
146 | { | |
147 | kfree(vcpu_e500->idt); | |
148 | } | |
149 | ||
150 | /* Invalidate all mappings on vcpu */ | |
151 | static void kvmppc_e500_id_table_reset_all(struct kvmppc_vcpu_e500 *vcpu_e500) | |
152 | { | |
153 | memset(vcpu_e500->idt, 0, sizeof(struct vcpu_id_table)); | |
154 | ||
155 | /* Update shadow pid when mappings are changed */ | |
156 | kvmppc_e500_recalc_shadow_pid(vcpu_e500); | |
157 | } | |
158 | ||
159 | /* Invalidate one ID mapping on vcpu */ | |
160 | static inline void kvmppc_e500_id_table_reset_one( | |
161 | struct kvmppc_vcpu_e500 *vcpu_e500, | |
162 | int as, int pid, int pr) | |
163 | { | |
164 | struct vcpu_id_table *idt = vcpu_e500->idt; | |
165 | ||
166 | BUG_ON(as >= 2); | |
167 | BUG_ON(pid >= NUM_TIDS); | |
168 | BUG_ON(pr >= 2); | |
169 | ||
170 | idt->id[as][pid][pr].val = 0; | |
171 | idt->id[as][pid][pr].pentry = NULL; | |
172 | ||
173 | /* Update shadow pid when mappings are changed */ | |
174 | kvmppc_e500_recalc_shadow_pid(vcpu_e500); | |
175 | } | |
176 | ||
177 | /* | |
178 | * Map guest (vcpu,AS,ID,PR) to physical core shadow id. | |
179 | * This function first lookup if a valid mapping exists, | |
180 | * if not, then creates a new one. | |
181 | * | |
182 | * The caller must have preemption disabled, and keep it that way until | |
183 | * it has finished with the returned shadow id (either written into the | |
184 | * TLB or arch.shadow_pid, or discarded). | |
185 | */ | |
186 | static unsigned int kvmppc_e500_get_sid(struct kvmppc_vcpu_e500 *vcpu_e500, | |
187 | unsigned int as, unsigned int gid, | |
188 | unsigned int pr, int avoid_recursion) | |
189 | { | |
190 | struct vcpu_id_table *idt = vcpu_e500->idt; | |
191 | int sid; | |
192 | ||
193 | BUG_ON(as >= 2); | |
194 | BUG_ON(gid >= NUM_TIDS); | |
195 | BUG_ON(pr >= 2); | |
196 | ||
197 | sid = local_sid_lookup(&idt->id[as][gid][pr]); | |
198 | ||
199 | while (sid <= 0) { | |
200 | /* No mapping yet */ | |
201 | sid = local_sid_setup_one(&idt->id[as][gid][pr]); | |
202 | if (sid <= 0) { | |
203 | _tlbil_all(); | |
204 | local_sid_destroy_all(); | |
205 | } | |
206 | ||
207 | /* Update shadow pid when mappings are changed */ | |
208 | if (!avoid_recursion) | |
209 | kvmppc_e500_recalc_shadow_pid(vcpu_e500); | |
210 | } | |
211 | ||
212 | return sid; | |
213 | } | |
214 | ||
215 | /* Map guest pid to shadow. | |
216 | * We use PID to keep shadow of current guest non-zero PID, | |
217 | * and use PID1 to keep shadow of guest zero PID. | |
218 | * So that guest tlbe with TID=0 can be accessed at any time */ | |
219 | void kvmppc_e500_recalc_shadow_pid(struct kvmppc_vcpu_e500 *vcpu_e500) | |
220 | { | |
221 | preempt_disable(); | |
222 | vcpu_e500->vcpu.arch.shadow_pid = kvmppc_e500_get_sid(vcpu_e500, | |
223 | get_cur_as(&vcpu_e500->vcpu), | |
224 | get_cur_pid(&vcpu_e500->vcpu), | |
225 | get_cur_pr(&vcpu_e500->vcpu), 1); | |
226 | vcpu_e500->vcpu.arch.shadow_pid1 = kvmppc_e500_get_sid(vcpu_e500, | |
227 | get_cur_as(&vcpu_e500->vcpu), 0, | |
228 | get_cur_pr(&vcpu_e500->vcpu), 1); | |
229 | preempt_enable(); | |
230 | } | |
231 | ||
0164c0f0 | 232 | static inline unsigned int gtlb0_get_next_victim( |
bc8080cb HB |
233 | struct kvmppc_vcpu_e500 *vcpu_e500) |
234 | { | |
235 | unsigned int victim; | |
236 | ||
08b7fa92 | 237 | victim = vcpu_e500->gtlb_nv[0]++; |
dc83b8bc | 238 | if (unlikely(vcpu_e500->gtlb_nv[0] >= vcpu_e500->gtlb_params[0].ways)) |
08b7fa92 | 239 | vcpu_e500->gtlb_nv[0] = 0; |
bc8080cb HB |
240 | |
241 | return victim; | |
242 | } | |
243 | ||
244 | static inline unsigned int tlb1_max_shadow_size(void) | |
245 | { | |
a4cd8b23 | 246 | /* reserve one entry for magic page */ |
0164c0f0 | 247 | return host_tlb_params[1].entries - tlbcam_index - 1; |
bc8080cb HB |
248 | } |
249 | ||
dc83b8bc | 250 | static inline int tlbe_is_writable(struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb | 251 | { |
dc83b8bc | 252 | return tlbe->mas7_3 & (MAS3_SW|MAS3_UW); |
bc8080cb HB |
253 | } |
254 | ||
255 | static inline u32 e500_shadow_mas3_attrib(u32 mas3, int usermode) | |
256 | { | |
257 | /* Mask off reserved bits. */ | |
258 | mas3 &= MAS3_ATTRIB_MASK; | |
259 | ||
260 | if (!usermode) { | |
261 | /* Guest is in supervisor mode, | |
262 | * so we need to translate guest | |
263 | * supervisor permissions into user permissions. */ | |
264 | mas3 &= ~E500_TLB_USER_PERM_MASK; | |
265 | mas3 |= (mas3 & E500_TLB_SUPER_PERM_MASK) << 1; | |
266 | } | |
267 | ||
268 | return mas3 | E500_TLB_SUPER_PERM_MASK; | |
269 | } | |
270 | ||
271 | static inline u32 e500_shadow_mas2_attrib(u32 mas2, int usermode) | |
272 | { | |
046a48b3 LY |
273 | #ifdef CONFIG_SMP |
274 | return (mas2 & MAS2_ATTRIB_MASK) | MAS2_M; | |
275 | #else | |
bc8080cb | 276 | return mas2 & MAS2_ATTRIB_MASK; |
046a48b3 | 277 | #endif |
bc8080cb HB |
278 | } |
279 | ||
280 | /* | |
281 | * writing shadow tlb entry to host TLB | |
282 | */ | |
dc83b8bc SW |
283 | static inline void __write_host_tlbe(struct kvm_book3e_206_tlb_entry *stlbe, |
284 | uint32_t mas0) | |
bc8080cb | 285 | { |
0ef30995 SW |
286 | unsigned long flags; |
287 | ||
288 | local_irq_save(flags); | |
289 | mtspr(SPRN_MAS0, mas0); | |
bc8080cb | 290 | mtspr(SPRN_MAS1, stlbe->mas1); |
dc83b8bc SW |
291 | mtspr(SPRN_MAS2, (unsigned long)stlbe->mas2); |
292 | mtspr(SPRN_MAS3, (u32)stlbe->mas7_3); | |
293 | mtspr(SPRN_MAS7, (u32)(stlbe->mas7_3 >> 32)); | |
0ef30995 SW |
294 | asm volatile("isync; tlbwe" : : : "memory"); |
295 | local_irq_restore(flags); | |
d37b1a03 LY |
296 | |
297 | trace_kvm_booke206_stlb_write(mas0, stlbe->mas8, stlbe->mas1, | |
298 | stlbe->mas2, stlbe->mas7_3); | |
bc8080cb HB |
299 | } |
300 | ||
57013524 SW |
301 | /* |
302 | * Acquire a mas0 with victim hint, as if we just took a TLB miss. | |
303 | * | |
304 | * We don't care about the address we're searching for, other than that it's | |
305 | * in the right set and is not present in the TLB. Using a zero PID and a | |
306 | * userspace address means we don't have to set and then restore MAS5, or | |
307 | * calculate a proper MAS6 value. | |
308 | */ | |
309 | static u32 get_host_mas0(unsigned long eaddr) | |
310 | { | |
311 | unsigned long flags; | |
312 | u32 mas0; | |
313 | ||
314 | local_irq_save(flags); | |
315 | mtspr(SPRN_MAS6, 0); | |
316 | asm volatile("tlbsx 0, %0" : : "b" (eaddr & ~CONFIG_PAGE_OFFSET)); | |
317 | mas0 = mfspr(SPRN_MAS0); | |
318 | local_irq_restore(flags); | |
319 | ||
320 | return mas0; | |
321 | } | |
322 | ||
323 | /* sesel is for tlb1 only */ | |
bc8080cb | 324 | static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500, |
57013524 | 325 | int tlbsel, int sesel, struct kvm_book3e_206_tlb_entry *stlbe) |
bc8080cb | 326 | { |
57013524 SW |
327 | u32 mas0; |
328 | ||
bc8080cb | 329 | if (tlbsel == 0) { |
57013524 SW |
330 | mas0 = get_host_mas0(stlbe->mas2); |
331 | __write_host_tlbe(stlbe, mas0); | |
bc8080cb | 332 | } else { |
0ef30995 SW |
333 | __write_host_tlbe(stlbe, |
334 | MAS0_TLBSEL(1) | | |
57013524 | 335 | MAS0_ESEL(to_htlb1_esel(sesel))); |
bc8080cb | 336 | } |
bc8080cb HB |
337 | } |
338 | ||
a4cd8b23 SW |
339 | void kvmppc_map_magic(struct kvm_vcpu *vcpu) |
340 | { | |
dd9ebf1f | 341 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); |
dc83b8bc | 342 | struct kvm_book3e_206_tlb_entry magic; |
a4cd8b23 | 343 | ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK; |
dd9ebf1f | 344 | unsigned int stid; |
a4cd8b23 SW |
345 | pfn_t pfn; |
346 | ||
347 | pfn = (pfn_t)virt_to_phys((void *)shared_page) >> PAGE_SHIFT; | |
348 | get_page(pfn_to_page(pfn)); | |
349 | ||
dd9ebf1f LY |
350 | preempt_disable(); |
351 | stid = kvmppc_e500_get_sid(vcpu_e500, 0, 0, 0, 0); | |
352 | ||
353 | magic.mas1 = MAS1_VALID | MAS1_TS | MAS1_TID(stid) | | |
a4cd8b23 SW |
354 | MAS1_TSIZE(BOOK3E_PAGESZ_4K); |
355 | magic.mas2 = vcpu->arch.magic_page_ea | MAS2_M; | |
dc83b8bc SW |
356 | magic.mas7_3 = ((u64)pfn << PAGE_SHIFT) | |
357 | MAS3_SW | MAS3_SR | MAS3_UW | MAS3_UR; | |
d37b1a03 | 358 | magic.mas8 = 0; |
a4cd8b23 SW |
359 | |
360 | __write_host_tlbe(&magic, MAS0_TLBSEL(1) | MAS0_ESEL(tlbcam_index)); | |
dd9ebf1f | 361 | preempt_enable(); |
a4cd8b23 SW |
362 | } |
363 | ||
bc8080cb HB |
364 | void kvmppc_e500_tlb_load(struct kvm_vcpu *vcpu, int cpu) |
365 | { | |
dd9ebf1f LY |
366 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); |
367 | ||
368 | /* Shadow PID may be expired on local core */ | |
369 | kvmppc_e500_recalc_shadow_pid(vcpu_e500); | |
bc8080cb HB |
370 | } |
371 | ||
372 | void kvmppc_e500_tlb_put(struct kvm_vcpu *vcpu) | |
373 | { | |
dd9ebf1f LY |
374 | } |
375 | ||
0164c0f0 SW |
376 | static void inval_gtlbe_on_host(struct kvmppc_vcpu_e500 *vcpu_e500, |
377 | int tlbsel, int esel) | |
dd9ebf1f | 378 | { |
dc83b8bc SW |
379 | struct kvm_book3e_206_tlb_entry *gtlbe = |
380 | get_entry(vcpu_e500, tlbsel, esel); | |
dd9ebf1f LY |
381 | struct vcpu_id_table *idt = vcpu_e500->idt; |
382 | unsigned int pr, tid, ts, pid; | |
383 | u32 val, eaddr; | |
384 | unsigned long flags; | |
385 | ||
386 | ts = get_tlb_ts(gtlbe); | |
387 | tid = get_tlb_tid(gtlbe); | |
388 | ||
389 | preempt_disable(); | |
390 | ||
391 | /* One guest ID may be mapped to two shadow IDs */ | |
392 | for (pr = 0; pr < 2; pr++) { | |
393 | /* | |
394 | * The shadow PID can have a valid mapping on at most one | |
395 | * host CPU. In the common case, it will be valid on this | |
396 | * CPU, in which case (for TLB0) we do a local invalidation | |
397 | * of the specific address. | |
398 | * | |
399 | * If the shadow PID is not valid on the current host CPU, or | |
400 | * if we're invalidating a TLB1 entry, we invalidate the | |
401 | * entire shadow PID. | |
402 | */ | |
403 | if (tlbsel == 1 || | |
404 | (pid = local_sid_lookup(&idt->id[ts][tid][pr])) <= 0) { | |
405 | kvmppc_e500_id_table_reset_one(vcpu_e500, ts, tid, pr); | |
406 | continue; | |
407 | } | |
408 | ||
409 | /* | |
410 | * The guest is invalidating a TLB0 entry which is in a PID | |
411 | * that has a valid shadow mapping on this host CPU. We | |
412 | * search host TLB0 to invalidate it's shadow TLB entry, | |
413 | * similar to __tlbil_va except that we need to look in AS1. | |
414 | */ | |
415 | val = (pid << MAS6_SPID_SHIFT) | MAS6_SAS; | |
416 | eaddr = get_tlb_eaddr(gtlbe); | |
417 | ||
418 | local_irq_save(flags); | |
419 | ||
420 | mtspr(SPRN_MAS6, val); | |
421 | asm volatile("tlbsx 0, %[eaddr]" : : [eaddr] "r" (eaddr)); | |
422 | val = mfspr(SPRN_MAS1); | |
423 | if (val & MAS1_VALID) { | |
424 | mtspr(SPRN_MAS1, val & ~MAS1_VALID); | |
425 | asm volatile("tlbwe"); | |
426 | } | |
427 | ||
428 | local_irq_restore(flags); | |
429 | } | |
430 | ||
431 | preempt_enable(); | |
bc8080cb HB |
432 | } |
433 | ||
0164c0f0 SW |
434 | static int tlb0_set_base(gva_t addr, int sets, int ways) |
435 | { | |
436 | int set_base; | |
437 | ||
438 | set_base = (addr >> PAGE_SHIFT) & (sets - 1); | |
439 | set_base *= ways; | |
440 | ||
441 | return set_base; | |
442 | } | |
443 | ||
444 | static int gtlb0_set_base(struct kvmppc_vcpu_e500 *vcpu_e500, gva_t addr) | |
445 | { | |
dc83b8bc SW |
446 | return tlb0_set_base(addr, vcpu_e500->gtlb_params[0].sets, |
447 | vcpu_e500->gtlb_params[0].ways); | |
0164c0f0 SW |
448 | } |
449 | ||
b5904972 | 450 | static unsigned int get_tlb_esel(struct kvm_vcpu *vcpu, int tlbsel) |
0164c0f0 | 451 | { |
b5904972 SW |
452 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); |
453 | int esel = get_tlb_esel_bit(vcpu); | |
0164c0f0 SW |
454 | |
455 | if (tlbsel == 0) { | |
dc83b8bc | 456 | esel &= vcpu_e500->gtlb_params[0].ways - 1; |
b5904972 | 457 | esel += gtlb0_set_base(vcpu_e500, vcpu->arch.shared->mas2); |
0164c0f0 | 458 | } else { |
dc83b8bc | 459 | esel &= vcpu_e500->gtlb_params[tlbsel].entries - 1; |
0164c0f0 SW |
460 | } |
461 | ||
462 | return esel; | |
463 | } | |
464 | ||
bc8080cb HB |
465 | /* Search the guest TLB for a matching entry. */ |
466 | static int kvmppc_e500_tlb_index(struct kvmppc_vcpu_e500 *vcpu_e500, | |
467 | gva_t eaddr, int tlbsel, unsigned int pid, int as) | |
468 | { | |
dc83b8bc SW |
469 | int size = vcpu_e500->gtlb_params[tlbsel].entries; |
470 | unsigned int set_base, offset; | |
bc8080cb HB |
471 | int i; |
472 | ||
1aee47a0 | 473 | if (tlbsel == 0) { |
0164c0f0 | 474 | set_base = gtlb0_set_base(vcpu_e500, eaddr); |
dc83b8bc | 475 | size = vcpu_e500->gtlb_params[0].ways; |
1aee47a0 SW |
476 | } else { |
477 | set_base = 0; | |
478 | } | |
479 | ||
dc83b8bc SW |
480 | offset = vcpu_e500->gtlb_offset[tlbsel]; |
481 | ||
1aee47a0 | 482 | for (i = 0; i < size; i++) { |
dc83b8bc SW |
483 | struct kvm_book3e_206_tlb_entry *tlbe = |
484 | &vcpu_e500->gtlb_arch[offset + set_base + i]; | |
bc8080cb HB |
485 | unsigned int tid; |
486 | ||
487 | if (eaddr < get_tlb_eaddr(tlbe)) | |
488 | continue; | |
489 | ||
490 | if (eaddr > get_tlb_end(tlbe)) | |
491 | continue; | |
492 | ||
493 | tid = get_tlb_tid(tlbe); | |
494 | if (tid && (tid != pid)) | |
495 | continue; | |
496 | ||
497 | if (!get_tlb_v(tlbe)) | |
498 | continue; | |
499 | ||
500 | if (get_tlb_ts(tlbe) != as && as != -1) | |
501 | continue; | |
502 | ||
1aee47a0 | 503 | return set_base + i; |
bc8080cb HB |
504 | } |
505 | ||
506 | return -1; | |
507 | } | |
508 | ||
0164c0f0 | 509 | static inline void kvmppc_e500_ref_setup(struct tlbe_ref *ref, |
dc83b8bc | 510 | struct kvm_book3e_206_tlb_entry *gtlbe, |
0164c0f0 | 511 | pfn_t pfn) |
bc8080cb | 512 | { |
0164c0f0 SW |
513 | ref->pfn = pfn; |
514 | ref->flags = E500_TLB_VALID; | |
bc8080cb | 515 | |
08b7fa92 | 516 | if (tlbe_is_writable(gtlbe)) |
0164c0f0 | 517 | ref->flags |= E500_TLB_DIRTY; |
bc8080cb HB |
518 | } |
519 | ||
0164c0f0 | 520 | static inline void kvmppc_e500_ref_release(struct tlbe_ref *ref) |
bc8080cb | 521 | { |
0164c0f0 SW |
522 | if (ref->flags & E500_TLB_VALID) { |
523 | if (ref->flags & E500_TLB_DIRTY) | |
524 | kvm_release_pfn_dirty(ref->pfn); | |
08b7fa92 | 525 | else |
0164c0f0 SW |
526 | kvm_release_pfn_clean(ref->pfn); |
527 | ||
528 | ref->flags = 0; | |
529 | } | |
530 | } | |
531 | ||
532 | static void clear_tlb_privs(struct kvmppc_vcpu_e500 *vcpu_e500) | |
533 | { | |
534 | int tlbsel = 0; | |
535 | int i; | |
bc8080cb | 536 | |
dc83b8bc | 537 | for (i = 0; i < vcpu_e500->gtlb_params[tlbsel].entries; i++) { |
0164c0f0 SW |
538 | struct tlbe_ref *ref = |
539 | &vcpu_e500->gtlb_priv[tlbsel][i].ref; | |
540 | kvmppc_e500_ref_release(ref); | |
08b7fa92 | 541 | } |
bc8080cb HB |
542 | } |
543 | ||
0164c0f0 SW |
544 | static void clear_tlb_refs(struct kvmppc_vcpu_e500 *vcpu_e500) |
545 | { | |
546 | int stlbsel = 1; | |
547 | int i; | |
548 | ||
dc83b8bc SW |
549 | kvmppc_e500_id_table_reset_all(vcpu_e500); |
550 | ||
0164c0f0 SW |
551 | for (i = 0; i < host_tlb_params[stlbsel].entries; i++) { |
552 | struct tlbe_ref *ref = | |
553 | &vcpu_e500->tlb_refs[stlbsel][i]; | |
554 | kvmppc_e500_ref_release(ref); | |
555 | } | |
556 | ||
557 | clear_tlb_privs(vcpu_e500); | |
558 | } | |
559 | ||
bc8080cb HB |
560 | static inline void kvmppc_e500_deliver_tlb_miss(struct kvm_vcpu *vcpu, |
561 | unsigned int eaddr, int as) | |
562 | { | |
563 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
564 | unsigned int victim, pidsel, tsized; | |
565 | int tlbsel; | |
566 | ||
fb2838d4 | 567 | /* since we only have two TLBs, only lower bit is used. */ |
b5904972 | 568 | tlbsel = (vcpu->arch.shared->mas4 >> 28) & 0x1; |
0164c0f0 | 569 | victim = (tlbsel == 0) ? gtlb0_get_next_victim(vcpu_e500) : 0; |
b5904972 SW |
570 | pidsel = (vcpu->arch.shared->mas4 >> 16) & 0xf; |
571 | tsized = (vcpu->arch.shared->mas4 >> 7) & 0x1f; | |
bc8080cb | 572 | |
b5904972 | 573 | vcpu->arch.shared->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(victim) |
08b7fa92 | 574 | | MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]); |
b5904972 | 575 | vcpu->arch.shared->mas1 = MAS1_VALID | (as ? MAS1_TS : 0) |
bc8080cb HB |
576 | | MAS1_TID(vcpu_e500->pid[pidsel]) |
577 | | MAS1_TSIZE(tsized); | |
b5904972 SW |
578 | vcpu->arch.shared->mas2 = (eaddr & MAS2_EPN) |
579 | | (vcpu->arch.shared->mas4 & MAS2_ATTRIB_MASK); | |
580 | vcpu->arch.shared->mas7_3 &= MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3; | |
581 | vcpu->arch.shared->mas6 = (vcpu->arch.shared->mas6 & MAS6_SPID1) | |
bc8080cb HB |
582 | | (get_cur_pid(vcpu) << 16) |
583 | | (as ? MAS6_SAS : 0); | |
bc8080cb HB |
584 | } |
585 | ||
3bf3cdcc | 586 | /* TID must be supplied by the caller */ |
dc83b8bc SW |
587 | static inline void kvmppc_e500_setup_stlbe( |
588 | struct kvmppc_vcpu_e500 *vcpu_e500, | |
589 | struct kvm_book3e_206_tlb_entry *gtlbe, | |
590 | int tsize, struct tlbe_ref *ref, u64 gvaddr, | |
591 | struct kvm_book3e_206_tlb_entry *stlbe) | |
08b7fa92 | 592 | { |
0164c0f0 SW |
593 | pfn_t pfn = ref->pfn; |
594 | ||
595 | BUG_ON(!(ref->flags & E500_TLB_VALID)); | |
08b7fa92 LY |
596 | |
597 | /* Force TS=1 IPROT=0 for all guest mappings. */ | |
3bf3cdcc | 598 | stlbe->mas1 = MAS1_TSIZE(tsize) | MAS1_TS | MAS1_VALID; |
08b7fa92 LY |
599 | stlbe->mas2 = (gvaddr & MAS2_EPN) |
600 | | e500_shadow_mas2_attrib(gtlbe->mas2, | |
601 | vcpu_e500->vcpu.arch.shared->msr & MSR_PR); | |
dc83b8bc SW |
602 | stlbe->mas7_3 = ((u64)pfn << PAGE_SHIFT) |
603 | | e500_shadow_mas3_attrib(gtlbe->mas7_3, | |
08b7fa92 | 604 | vcpu_e500->vcpu.arch.shared->msr & MSR_PR); |
08b7fa92 LY |
605 | } |
606 | ||
bc8080cb | 607 | static inline void kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, |
dc83b8bc | 608 | u64 gvaddr, gfn_t gfn, struct kvm_book3e_206_tlb_entry *gtlbe, |
57013524 | 609 | int tlbsel, struct kvm_book3e_206_tlb_entry *stlbe, |
dc83b8bc | 610 | struct tlbe_ref *ref) |
bc8080cb | 611 | { |
9973d54e | 612 | struct kvm_memory_slot *slot; |
9973d54e SW |
613 | unsigned long pfn, hva; |
614 | int pfnmap = 0; | |
615 | int tsize = BOOK3E_PAGESZ_4K; | |
bc8080cb | 616 | |
59c1f4e3 SW |
617 | /* |
618 | * Translate guest physical to true physical, acquiring | |
619 | * a page reference if it is normal, non-reserved memory. | |
9973d54e SW |
620 | * |
621 | * gfn_to_memslot() must succeed because otherwise we wouldn't | |
622 | * have gotten this far. Eventually we should just pass the slot | |
623 | * pointer through from the first lookup. | |
59c1f4e3 | 624 | */ |
9973d54e SW |
625 | slot = gfn_to_memslot(vcpu_e500->vcpu.kvm, gfn); |
626 | hva = gfn_to_hva_memslot(slot, gfn); | |
627 | ||
628 | if (tlbsel == 1) { | |
629 | struct vm_area_struct *vma; | |
630 | down_read(¤t->mm->mmap_sem); | |
631 | ||
632 | vma = find_vma(current->mm, hva); | |
633 | if (vma && hva >= vma->vm_start && | |
634 | (vma->vm_flags & VM_PFNMAP)) { | |
635 | /* | |
636 | * This VMA is a physically contiguous region (e.g. | |
637 | * /dev/mem) that bypasses normal Linux page | |
638 | * management. Find the overlap between the | |
639 | * vma and the memslot. | |
640 | */ | |
641 | ||
642 | unsigned long start, end; | |
643 | unsigned long slot_start, slot_end; | |
644 | ||
645 | pfnmap = 1; | |
646 | ||
647 | start = vma->vm_pgoff; | |
648 | end = start + | |
649 | ((vma->vm_end - vma->vm_start) >> PAGE_SHIFT); | |
650 | ||
651 | pfn = start + ((hva - vma->vm_start) >> PAGE_SHIFT); | |
652 | ||
653 | slot_start = pfn - (gfn - slot->base_gfn); | |
654 | slot_end = slot_start + slot->npages; | |
655 | ||
656 | if (start < slot_start) | |
657 | start = slot_start; | |
658 | if (end > slot_end) | |
659 | end = slot_end; | |
660 | ||
661 | tsize = (gtlbe->mas1 & MAS1_TSIZE_MASK) >> | |
662 | MAS1_TSIZE_SHIFT; | |
663 | ||
664 | /* | |
665 | * e500 doesn't implement the lowest tsize bit, | |
666 | * or 1K pages. | |
667 | */ | |
668 | tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1); | |
669 | ||
670 | /* | |
671 | * Now find the largest tsize (up to what the guest | |
672 | * requested) that will cover gfn, stay within the | |
673 | * range, and for which gfn and pfn are mutually | |
674 | * aligned. | |
675 | */ | |
676 | ||
677 | for (; tsize > BOOK3E_PAGESZ_4K; tsize -= 2) { | |
678 | unsigned long gfn_start, gfn_end, tsize_pages; | |
679 | tsize_pages = 1 << (tsize - 2); | |
680 | ||
681 | gfn_start = gfn & ~(tsize_pages - 1); | |
682 | gfn_end = gfn_start + tsize_pages; | |
683 | ||
684 | if (gfn_start + pfn - gfn < start) | |
685 | continue; | |
686 | if (gfn_end + pfn - gfn > end) | |
687 | continue; | |
688 | if ((gfn & (tsize_pages - 1)) != | |
689 | (pfn & (tsize_pages - 1))) | |
690 | continue; | |
691 | ||
692 | gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1); | |
693 | pfn &= ~(tsize_pages - 1); | |
694 | break; | |
695 | } | |
95325e6b AG |
696 | } else if (vma && hva >= vma->vm_start && |
697 | (vma->vm_flags & VM_HUGETLB)) { | |
698 | unsigned long psize = vma_kernel_pagesize(vma); | |
699 | ||
700 | tsize = (gtlbe->mas1 & MAS1_TSIZE_MASK) >> | |
701 | MAS1_TSIZE_SHIFT; | |
702 | ||
703 | /* | |
704 | * Take the largest page size that satisfies both host | |
705 | * and guest mapping | |
706 | */ | |
707 | tsize = min(__ilog2(psize) - 10, tsize); | |
708 | ||
709 | /* | |
710 | * e500 doesn't implement the lowest tsize bit, | |
711 | * or 1K pages. | |
712 | */ | |
713 | tsize = max(BOOK3E_PAGESZ_4K, tsize & ~1); | |
9973d54e SW |
714 | } |
715 | ||
716 | up_read(¤t->mm->mmap_sem); | |
717 | } | |
718 | ||
719 | if (likely(!pfnmap)) { | |
95325e6b | 720 | unsigned long tsize_pages = 1 << (tsize + 10 - PAGE_SHIFT); |
9973d54e SW |
721 | pfn = gfn_to_pfn_memslot(vcpu_e500->vcpu.kvm, slot, gfn); |
722 | if (is_error_pfn(pfn)) { | |
723 | printk(KERN_ERR "Couldn't get real page for gfn %lx!\n", | |
724 | (long)gfn); | |
725 | kvm_release_pfn_clean(pfn); | |
726 | return; | |
727 | } | |
95325e6b AG |
728 | |
729 | /* Align guest and physical address to page map boundaries */ | |
730 | pfn &= ~(tsize_pages - 1); | |
731 | gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1); | |
bc8080cb | 732 | } |
bc8080cb | 733 | |
0164c0f0 SW |
734 | /* Drop old ref and setup new one. */ |
735 | kvmppc_e500_ref_release(ref); | |
736 | kvmppc_e500_ref_setup(ref, gtlbe, pfn); | |
bc8080cb | 737 | |
0164c0f0 | 738 | kvmppc_e500_setup_stlbe(vcpu_e500, gtlbe, tsize, ref, gvaddr, stlbe); |
bc8080cb HB |
739 | } |
740 | ||
741 | /* XXX only map the one-one case, for now use TLB0 */ | |
57013524 SW |
742 | static void kvmppc_e500_tlb0_map(struct kvmppc_vcpu_e500 *vcpu_e500, |
743 | int esel, | |
744 | struct kvm_book3e_206_tlb_entry *stlbe) | |
bc8080cb | 745 | { |
dc83b8bc | 746 | struct kvm_book3e_206_tlb_entry *gtlbe; |
0164c0f0 | 747 | struct tlbe_ref *ref; |
bc8080cb | 748 | |
dc83b8bc | 749 | gtlbe = get_entry(vcpu_e500, 0, esel); |
0164c0f0 SW |
750 | ref = &vcpu_e500->gtlb_priv[0][esel].ref; |
751 | ||
bc8080cb HB |
752 | kvmppc_e500_shadow_map(vcpu_e500, get_tlb_eaddr(gtlbe), |
753 | get_tlb_raddr(gtlbe) >> PAGE_SHIFT, | |
57013524 | 754 | gtlbe, 0, stlbe, ref); |
bc8080cb HB |
755 | } |
756 | ||
757 | /* Caller must ensure that the specified guest TLB entry is safe to insert into | |
758 | * the shadow TLB. */ | |
759 | /* XXX for both one-one and one-to-many , for now use TLB1 */ | |
760 | static int kvmppc_e500_tlb1_map(struct kvmppc_vcpu_e500 *vcpu_e500, | |
dc83b8bc SW |
761 | u64 gvaddr, gfn_t gfn, struct kvm_book3e_206_tlb_entry *gtlbe, |
762 | struct kvm_book3e_206_tlb_entry *stlbe) | |
bc8080cb | 763 | { |
0164c0f0 | 764 | struct tlbe_ref *ref; |
bc8080cb HB |
765 | unsigned int victim; |
766 | ||
0164c0f0 | 767 | victim = vcpu_e500->host_tlb1_nv++; |
bc8080cb | 768 | |
0164c0f0 SW |
769 | if (unlikely(vcpu_e500->host_tlb1_nv >= tlb1_max_shadow_size())) |
770 | vcpu_e500->host_tlb1_nv = 0; | |
bc8080cb | 771 | |
0164c0f0 | 772 | ref = &vcpu_e500->tlb_refs[1][victim]; |
57013524 | 773 | kvmppc_e500_shadow_map(vcpu_e500, gvaddr, gfn, gtlbe, 1, stlbe, ref); |
bc8080cb HB |
774 | |
775 | return victim; | |
776 | } | |
777 | ||
dd9ebf1f | 778 | void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr) |
bc8080cb | 779 | { |
dd9ebf1f LY |
780 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); |
781 | ||
782 | /* Recalc shadow pid since MSR changes */ | |
783 | kvmppc_e500_recalc_shadow_pid(vcpu_e500); | |
bc8080cb HB |
784 | } |
785 | ||
08b7fa92 LY |
786 | static inline int kvmppc_e500_gtlbe_invalidate( |
787 | struct kvmppc_vcpu_e500 *vcpu_e500, | |
788 | int tlbsel, int esel) | |
bc8080cb | 789 | { |
dc83b8bc SW |
790 | struct kvm_book3e_206_tlb_entry *gtlbe = |
791 | get_entry(vcpu_e500, tlbsel, esel); | |
bc8080cb HB |
792 | |
793 | if (unlikely(get_tlb_iprot(gtlbe))) | |
794 | return -1; | |
795 | ||
bc8080cb HB |
796 | gtlbe->mas1 = 0; |
797 | ||
798 | return 0; | |
799 | } | |
800 | ||
b0a1835d LY |
801 | int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, ulong value) |
802 | { | |
803 | int esel; | |
804 | ||
805 | if (value & MMUCSR0_TLB0FI) | |
dc83b8bc | 806 | for (esel = 0; esel < vcpu_e500->gtlb_params[0].entries; esel++) |
b0a1835d LY |
807 | kvmppc_e500_gtlbe_invalidate(vcpu_e500, 0, esel); |
808 | if (value & MMUCSR0_TLB1FI) | |
dc83b8bc | 809 | for (esel = 0; esel < vcpu_e500->gtlb_params[1].entries; esel++) |
b0a1835d LY |
810 | kvmppc_e500_gtlbe_invalidate(vcpu_e500, 1, esel); |
811 | ||
dd9ebf1f LY |
812 | /* Invalidate all vcpu id mappings */ |
813 | kvmppc_e500_id_table_reset_all(vcpu_e500); | |
b0a1835d LY |
814 | |
815 | return EMULATE_DONE; | |
816 | } | |
817 | ||
bc8080cb HB |
818 | int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb) |
819 | { | |
820 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
821 | unsigned int ia; | |
822 | int esel, tlbsel; | |
823 | gva_t ea; | |
824 | ||
8e5b26b5 | 825 | ea = ((ra) ? kvmppc_get_gpr(vcpu, ra) : 0) + kvmppc_get_gpr(vcpu, rb); |
bc8080cb HB |
826 | |
827 | ia = (ea >> 2) & 0x1; | |
828 | ||
fb2838d4 | 829 | /* since we only have two TLBs, only lower bit is used. */ |
bc8080cb HB |
830 | tlbsel = (ea >> 3) & 0x1; |
831 | ||
832 | if (ia) { | |
833 | /* invalidate all entries */ | |
dc83b8bc SW |
834 | for (esel = 0; esel < vcpu_e500->gtlb_params[tlbsel].entries; |
835 | esel++) | |
bc8080cb HB |
836 | kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel); |
837 | } else { | |
838 | ea &= 0xfffff000; | |
839 | esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel, | |
840 | get_cur_pid(vcpu), -1); | |
841 | if (esel >= 0) | |
842 | kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel); | |
843 | } | |
844 | ||
dd9ebf1f LY |
845 | /* Invalidate all vcpu id mappings */ |
846 | kvmppc_e500_id_table_reset_all(vcpu_e500); | |
bc8080cb HB |
847 | |
848 | return EMULATE_DONE; | |
849 | } | |
850 | ||
851 | int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu) | |
852 | { | |
853 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
854 | int tlbsel, esel; | |
dc83b8bc | 855 | struct kvm_book3e_206_tlb_entry *gtlbe; |
bc8080cb | 856 | |
b5904972 SW |
857 | tlbsel = get_tlb_tlbsel(vcpu); |
858 | esel = get_tlb_esel(vcpu, tlbsel); | |
bc8080cb | 859 | |
dc83b8bc | 860 | gtlbe = get_entry(vcpu_e500, tlbsel, esel); |
b5904972 SW |
861 | vcpu->arch.shared->mas0 &= ~MAS0_NV(~0); |
862 | vcpu->arch.shared->mas0 |= MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]); | |
863 | vcpu->arch.shared->mas1 = gtlbe->mas1; | |
864 | vcpu->arch.shared->mas2 = gtlbe->mas2; | |
865 | vcpu->arch.shared->mas7_3 = gtlbe->mas7_3; | |
bc8080cb HB |
866 | |
867 | return EMULATE_DONE; | |
868 | } | |
869 | ||
870 | int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, int rb) | |
871 | { | |
872 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
b5904972 SW |
873 | int as = !!get_cur_sas(vcpu); |
874 | unsigned int pid = get_cur_spid(vcpu); | |
bc8080cb | 875 | int esel, tlbsel; |
dc83b8bc | 876 | struct kvm_book3e_206_tlb_entry *gtlbe = NULL; |
bc8080cb HB |
877 | gva_t ea; |
878 | ||
8e5b26b5 | 879 | ea = kvmppc_get_gpr(vcpu, rb); |
bc8080cb HB |
880 | |
881 | for (tlbsel = 0; tlbsel < 2; tlbsel++) { | |
882 | esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel, pid, as); | |
883 | if (esel >= 0) { | |
dc83b8bc | 884 | gtlbe = get_entry(vcpu_e500, tlbsel, esel); |
bc8080cb HB |
885 | break; |
886 | } | |
887 | } | |
888 | ||
889 | if (gtlbe) { | |
303b7c97 SW |
890 | esel &= vcpu_e500->gtlb_params[tlbsel].ways - 1; |
891 | ||
b5904972 | 892 | vcpu->arch.shared->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(esel) |
08b7fa92 | 893 | | MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]); |
b5904972 SW |
894 | vcpu->arch.shared->mas1 = gtlbe->mas1; |
895 | vcpu->arch.shared->mas2 = gtlbe->mas2; | |
896 | vcpu->arch.shared->mas7_3 = gtlbe->mas7_3; | |
bc8080cb HB |
897 | } else { |
898 | int victim; | |
899 | ||
fb2838d4 | 900 | /* since we only have two TLBs, only lower bit is used. */ |
b5904972 | 901 | tlbsel = vcpu->arch.shared->mas4 >> 28 & 0x1; |
0164c0f0 | 902 | victim = (tlbsel == 0) ? gtlb0_get_next_victim(vcpu_e500) : 0; |
bc8080cb | 903 | |
b5904972 SW |
904 | vcpu->arch.shared->mas0 = MAS0_TLBSEL(tlbsel) |
905 | | MAS0_ESEL(victim) | |
08b7fa92 | 906 | | MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]); |
b5904972 SW |
907 | vcpu->arch.shared->mas1 = |
908 | (vcpu->arch.shared->mas6 & MAS6_SPID0) | |
909 | | (vcpu->arch.shared->mas6 & (MAS6_SAS ? MAS1_TS : 0)) | |
910 | | (vcpu->arch.shared->mas4 & MAS4_TSIZED(~0)); | |
911 | vcpu->arch.shared->mas2 &= MAS2_EPN; | |
912 | vcpu->arch.shared->mas2 |= vcpu->arch.shared->mas4 & | |
913 | MAS2_ATTRIB_MASK; | |
914 | vcpu->arch.shared->mas7_3 &= MAS3_U0 | MAS3_U1 | | |
915 | MAS3_U2 | MAS3_U3; | |
bc8080cb HB |
916 | } |
917 | ||
49ea0695 | 918 | kvmppc_set_exit_type(vcpu, EMULATED_TLBSX_EXITS); |
bc8080cb HB |
919 | return EMULATE_DONE; |
920 | } | |
921 | ||
57013524 | 922 | /* sesel is for tlb1 only */ |
3bf3cdcc | 923 | static void write_stlbe(struct kvmppc_vcpu_e500 *vcpu_e500, |
dc83b8bc SW |
924 | struct kvm_book3e_206_tlb_entry *gtlbe, |
925 | struct kvm_book3e_206_tlb_entry *stlbe, | |
3bf3cdcc SW |
926 | int stlbsel, int sesel) |
927 | { | |
928 | int stid; | |
929 | ||
930 | preempt_disable(); | |
931 | stid = kvmppc_e500_get_sid(vcpu_e500, get_tlb_ts(gtlbe), | |
932 | get_tlb_tid(gtlbe), | |
933 | get_cur_pr(&vcpu_e500->vcpu), 0); | |
934 | ||
935 | stlbe->mas1 |= MAS1_TID(stid); | |
936 | write_host_tlbe(vcpu_e500, stlbsel, sesel, stlbe); | |
937 | preempt_enable(); | |
938 | } | |
939 | ||
bc8080cb HB |
940 | int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu) |
941 | { | |
942 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
dc83b8bc | 943 | struct kvm_book3e_206_tlb_entry *gtlbe; |
08b7fa92 | 944 | int tlbsel, esel; |
bc8080cb | 945 | |
b5904972 SW |
946 | tlbsel = get_tlb_tlbsel(vcpu); |
947 | esel = get_tlb_esel(vcpu, tlbsel); | |
bc8080cb | 948 | |
dc83b8bc | 949 | gtlbe = get_entry(vcpu_e500, tlbsel, esel); |
bc8080cb | 950 | |
dd9ebf1f | 951 | if (get_tlb_v(gtlbe)) |
0164c0f0 | 952 | inval_gtlbe_on_host(vcpu_e500, tlbsel, esel); |
bc8080cb | 953 | |
b5904972 SW |
954 | gtlbe->mas1 = vcpu->arch.shared->mas1; |
955 | gtlbe->mas2 = vcpu->arch.shared->mas2; | |
956 | gtlbe->mas7_3 = vcpu->arch.shared->mas7_3; | |
bc8080cb | 957 | |
d37b1a03 LY |
958 | trace_kvm_booke206_gtlb_write(vcpu->arch.shared->mas0, gtlbe->mas1, |
959 | gtlbe->mas2, gtlbe->mas7_3); | |
bc8080cb HB |
960 | |
961 | /* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */ | |
962 | if (tlbe_is_host_safe(vcpu, gtlbe)) { | |
dc83b8bc | 963 | struct kvm_book3e_206_tlb_entry stlbe; |
08b7fa92 LY |
964 | int stlbsel, sesel; |
965 | u64 eaddr; | |
966 | u64 raddr; | |
967 | ||
bc8080cb HB |
968 | switch (tlbsel) { |
969 | case 0: | |
970 | /* TLB0 */ | |
971 | gtlbe->mas1 &= ~MAS1_TSIZE(~0); | |
0cfb50e5 | 972 | gtlbe->mas1 |= MAS1_TSIZE(BOOK3E_PAGESZ_4K); |
bc8080cb HB |
973 | |
974 | stlbsel = 0; | |
57013524 SW |
975 | kvmppc_e500_tlb0_map(vcpu_e500, esel, &stlbe); |
976 | sesel = 0; /* unused */ | |
bc8080cb HB |
977 | |
978 | break; | |
979 | ||
980 | case 1: | |
981 | /* TLB1 */ | |
982 | eaddr = get_tlb_eaddr(gtlbe); | |
983 | raddr = get_tlb_raddr(gtlbe); | |
984 | ||
985 | /* Create a 4KB mapping on the host. | |
986 | * If the guest wanted a large page, | |
987 | * only the first 4KB is mapped here and the rest | |
988 | * are mapped on the fly. */ | |
989 | stlbsel = 1; | |
990 | sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr, | |
08b7fa92 | 991 | raddr >> PAGE_SHIFT, gtlbe, &stlbe); |
bc8080cb HB |
992 | break; |
993 | ||
994 | default: | |
995 | BUG(); | |
996 | } | |
3bf3cdcc SW |
997 | |
998 | write_stlbe(vcpu_e500, gtlbe, &stlbe, stlbsel, sesel); | |
bc8080cb HB |
999 | } |
1000 | ||
49ea0695 | 1001 | kvmppc_set_exit_type(vcpu, EMULATED_TLBWE_EXITS); |
bc8080cb HB |
1002 | return EMULATE_DONE; |
1003 | } | |
1004 | ||
1005 | int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr) | |
1006 | { | |
666e7252 | 1007 | unsigned int as = !!(vcpu->arch.shared->msr & MSR_IS); |
bc8080cb HB |
1008 | |
1009 | return kvmppc_e500_tlb_search(vcpu, eaddr, get_cur_pid(vcpu), as); | |
1010 | } | |
1011 | ||
1012 | int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr) | |
1013 | { | |
666e7252 | 1014 | unsigned int as = !!(vcpu->arch.shared->msr & MSR_DS); |
bc8080cb HB |
1015 | |
1016 | return kvmppc_e500_tlb_search(vcpu, eaddr, get_cur_pid(vcpu), as); | |
1017 | } | |
1018 | ||
1019 | void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu) | |
1020 | { | |
666e7252 | 1021 | unsigned int as = !!(vcpu->arch.shared->msr & MSR_IS); |
bc8080cb HB |
1022 | |
1023 | kvmppc_e500_deliver_tlb_miss(vcpu, vcpu->arch.pc, as); | |
1024 | } | |
1025 | ||
1026 | void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu) | |
1027 | { | |
666e7252 | 1028 | unsigned int as = !!(vcpu->arch.shared->msr & MSR_DS); |
bc8080cb HB |
1029 | |
1030 | kvmppc_e500_deliver_tlb_miss(vcpu, vcpu->arch.fault_dear, as); | |
1031 | } | |
1032 | ||
1033 | gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int index, | |
1034 | gva_t eaddr) | |
1035 | { | |
1036 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
dc83b8bc SW |
1037 | struct kvm_book3e_206_tlb_entry *gtlbe; |
1038 | u64 pgmask; | |
1039 | ||
1040 | gtlbe = get_entry(vcpu_e500, tlbsel_of(index), esel_of(index)); | |
1041 | pgmask = get_tlb_bytes(gtlbe) - 1; | |
bc8080cb HB |
1042 | |
1043 | return get_tlb_raddr(gtlbe) | (eaddr & pgmask); | |
1044 | } | |
1045 | ||
1046 | void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu) | |
1047 | { | |
bc8080cb HB |
1048 | } |
1049 | ||
1050 | void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr, | |
1051 | unsigned int index) | |
1052 | { | |
1053 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
08b7fa92 | 1054 | struct tlbe_priv *priv; |
dc83b8bc | 1055 | struct kvm_book3e_206_tlb_entry *gtlbe, stlbe; |
bc8080cb HB |
1056 | int tlbsel = tlbsel_of(index); |
1057 | int esel = esel_of(index); | |
1058 | int stlbsel, sesel; | |
1059 | ||
dc83b8bc | 1060 | gtlbe = get_entry(vcpu_e500, tlbsel, esel); |
08b7fa92 | 1061 | |
bc8080cb HB |
1062 | switch (tlbsel) { |
1063 | case 0: | |
1064 | stlbsel = 0; | |
57013524 | 1065 | sesel = 0; /* unused */ |
0164c0f0 | 1066 | priv = &vcpu_e500->gtlb_priv[tlbsel][esel]; |
08b7fa92 LY |
1067 | |
1068 | kvmppc_e500_setup_stlbe(vcpu_e500, gtlbe, BOOK3E_PAGESZ_4K, | |
0164c0f0 | 1069 | &priv->ref, eaddr, &stlbe); |
bc8080cb HB |
1070 | break; |
1071 | ||
1072 | case 1: { | |
1073 | gfn_t gfn = gpaddr >> PAGE_SHIFT; | |
bc8080cb HB |
1074 | |
1075 | stlbsel = 1; | |
08b7fa92 LY |
1076 | sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr, gfn, |
1077 | gtlbe, &stlbe); | |
bc8080cb HB |
1078 | break; |
1079 | } | |
1080 | ||
1081 | default: | |
1082 | BUG(); | |
1083 | break; | |
1084 | } | |
08b7fa92 | 1085 | |
3bf3cdcc | 1086 | write_stlbe(vcpu_e500, gtlbe, &stlbe, stlbsel, sesel); |
bc8080cb HB |
1087 | } |
1088 | ||
1089 | int kvmppc_e500_tlb_search(struct kvm_vcpu *vcpu, | |
1090 | gva_t eaddr, unsigned int pid, int as) | |
1091 | { | |
1092 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
1093 | int esel, tlbsel; | |
1094 | ||
1095 | for (tlbsel = 0; tlbsel < 2; tlbsel++) { | |
1096 | esel = kvmppc_e500_tlb_index(vcpu_e500, eaddr, tlbsel, pid, as); | |
1097 | if (esel >= 0) | |
1098 | return index_of(tlbsel, esel); | |
1099 | } | |
1100 | ||
1101 | return -1; | |
1102 | } | |
1103 | ||
5ce941ee SW |
1104 | void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid) |
1105 | { | |
1106 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
1107 | ||
dd9ebf1f LY |
1108 | if (vcpu->arch.pid != pid) { |
1109 | vcpu_e500->pid[0] = vcpu->arch.pid = pid; | |
1110 | kvmppc_e500_recalc_shadow_pid(vcpu_e500); | |
1111 | } | |
5ce941ee SW |
1112 | } |
1113 | ||
bc8080cb HB |
1114 | void kvmppc_e500_tlb_setup(struct kvmppc_vcpu_e500 *vcpu_e500) |
1115 | { | |
dc83b8bc | 1116 | struct kvm_book3e_206_tlb_entry *tlbe; |
bc8080cb HB |
1117 | |
1118 | /* Insert large initial mapping for guest. */ | |
dc83b8bc | 1119 | tlbe = get_entry(vcpu_e500, 1, 0); |
0cfb50e5 | 1120 | tlbe->mas1 = MAS1_VALID | MAS1_TSIZE(BOOK3E_PAGESZ_256M); |
bc8080cb | 1121 | tlbe->mas2 = 0; |
dc83b8bc | 1122 | tlbe->mas7_3 = E500_TLB_SUPER_PERM_MASK; |
bc8080cb HB |
1123 | |
1124 | /* 4K map for serial output. Used by kernel wrapper. */ | |
dc83b8bc | 1125 | tlbe = get_entry(vcpu_e500, 1, 1); |
0cfb50e5 | 1126 | tlbe->mas1 = MAS1_VALID | MAS1_TSIZE(BOOK3E_PAGESZ_4K); |
bc8080cb | 1127 | tlbe->mas2 = (0xe0004500 & 0xFFFFF000) | MAS2_I | MAS2_G; |
dc83b8bc SW |
1128 | tlbe->mas7_3 = (0xe0004500 & 0xFFFFF000) | E500_TLB_SUPER_PERM_MASK; |
1129 | } | |
1130 | ||
1131 | static void free_gtlb(struct kvmppc_vcpu_e500 *vcpu_e500) | |
1132 | { | |
1133 | int i; | |
1134 | ||
1135 | clear_tlb_refs(vcpu_e500); | |
1136 | kfree(vcpu_e500->gtlb_priv[0]); | |
1137 | kfree(vcpu_e500->gtlb_priv[1]); | |
1138 | ||
1139 | if (vcpu_e500->shared_tlb_pages) { | |
1140 | vfree((void *)(round_down((uintptr_t)vcpu_e500->gtlb_arch, | |
1141 | PAGE_SIZE))); | |
1142 | ||
1143 | for (i = 0; i < vcpu_e500->num_shared_tlb_pages; i++) { | |
1144 | set_page_dirty_lock(vcpu_e500->shared_tlb_pages[i]); | |
1145 | put_page(vcpu_e500->shared_tlb_pages[i]); | |
1146 | } | |
1147 | ||
1148 | vcpu_e500->num_shared_tlb_pages = 0; | |
1149 | vcpu_e500->shared_tlb_pages = NULL; | |
1150 | } else { | |
1151 | kfree(vcpu_e500->gtlb_arch); | |
1152 | } | |
1153 | ||
1154 | vcpu_e500->gtlb_arch = NULL; | |
1155 | } | |
1156 | ||
1157 | int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, | |
1158 | struct kvm_config_tlb *cfg) | |
1159 | { | |
1160 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
1161 | struct kvm_book3e_206_tlb_params params; | |
1162 | char *virt; | |
1163 | struct page **pages; | |
1164 | struct tlbe_priv *privs[2] = {}; | |
1165 | size_t array_len; | |
1166 | u32 sets; | |
1167 | int num_pages, ret, i; | |
1168 | ||
1169 | if (cfg->mmu_type != KVM_MMU_FSL_BOOKE_NOHV) | |
1170 | return -EINVAL; | |
1171 | ||
1172 | if (copy_from_user(¶ms, (void __user *)(uintptr_t)cfg->params, | |
1173 | sizeof(params))) | |
1174 | return -EFAULT; | |
1175 | ||
1176 | if (params.tlb_sizes[1] > 64) | |
1177 | return -EINVAL; | |
1178 | if (params.tlb_ways[1] != params.tlb_sizes[1]) | |
1179 | return -EINVAL; | |
1180 | if (params.tlb_sizes[2] != 0 || params.tlb_sizes[3] != 0) | |
1181 | return -EINVAL; | |
1182 | if (params.tlb_ways[2] != 0 || params.tlb_ways[3] != 0) | |
1183 | return -EINVAL; | |
1184 | ||
1185 | if (!is_power_of_2(params.tlb_ways[0])) | |
1186 | return -EINVAL; | |
1187 | ||
1188 | sets = params.tlb_sizes[0] >> ilog2(params.tlb_ways[0]); | |
1189 | if (!is_power_of_2(sets)) | |
1190 | return -EINVAL; | |
1191 | ||
1192 | array_len = params.tlb_sizes[0] + params.tlb_sizes[1]; | |
1193 | array_len *= sizeof(struct kvm_book3e_206_tlb_entry); | |
1194 | ||
1195 | if (cfg->array_len < array_len) | |
1196 | return -EINVAL; | |
1197 | ||
1198 | num_pages = DIV_ROUND_UP(cfg->array + array_len - 1, PAGE_SIZE) - | |
1199 | cfg->array / PAGE_SIZE; | |
1200 | pages = kmalloc(sizeof(struct page *) * num_pages, GFP_KERNEL); | |
1201 | if (!pages) | |
1202 | return -ENOMEM; | |
1203 | ||
1204 | ret = get_user_pages_fast(cfg->array, num_pages, 1, pages); | |
1205 | if (ret < 0) | |
1206 | goto err_pages; | |
1207 | ||
1208 | if (ret != num_pages) { | |
1209 | num_pages = ret; | |
1210 | ret = -EFAULT; | |
1211 | goto err_put_page; | |
1212 | } | |
1213 | ||
1214 | virt = vmap(pages, num_pages, VM_MAP, PAGE_KERNEL); | |
1215 | if (!virt) | |
1216 | goto err_put_page; | |
1217 | ||
1218 | privs[0] = kzalloc(sizeof(struct tlbe_priv) * params.tlb_sizes[0], | |
1219 | GFP_KERNEL); | |
1220 | privs[1] = kzalloc(sizeof(struct tlbe_priv) * params.tlb_sizes[1], | |
1221 | GFP_KERNEL); | |
1222 | ||
1223 | if (!privs[0] || !privs[1]) | |
1224 | goto err_put_page; | |
1225 | ||
1226 | free_gtlb(vcpu_e500); | |
1227 | ||
1228 | vcpu_e500->gtlb_priv[0] = privs[0]; | |
1229 | vcpu_e500->gtlb_priv[1] = privs[1]; | |
1230 | ||
1231 | vcpu_e500->gtlb_arch = (struct kvm_book3e_206_tlb_entry *) | |
1232 | (virt + (cfg->array & (PAGE_SIZE - 1))); | |
1233 | ||
1234 | vcpu_e500->gtlb_params[0].entries = params.tlb_sizes[0]; | |
1235 | vcpu_e500->gtlb_params[1].entries = params.tlb_sizes[1]; | |
1236 | ||
1237 | vcpu_e500->gtlb_offset[0] = 0; | |
1238 | vcpu_e500->gtlb_offset[1] = params.tlb_sizes[0]; | |
1239 | ||
7b11dc99 | 1240 | vcpu_e500->tlb0cfg &= ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); |
dc83b8bc SW |
1241 | if (params.tlb_sizes[0] <= 2048) |
1242 | vcpu_e500->tlb0cfg |= params.tlb_sizes[0]; | |
7b11dc99 | 1243 | vcpu_e500->tlb0cfg |= params.tlb_ways[0] << TLBnCFG_ASSOC_SHIFT; |
dc83b8bc | 1244 | |
7b11dc99 | 1245 | vcpu_e500->tlb1cfg &= ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); |
dc83b8bc | 1246 | vcpu_e500->tlb1cfg |= params.tlb_sizes[1]; |
7b11dc99 | 1247 | vcpu_e500->tlb1cfg |= params.tlb_ways[1] << TLBnCFG_ASSOC_SHIFT; |
dc83b8bc SW |
1248 | |
1249 | vcpu_e500->shared_tlb_pages = pages; | |
1250 | vcpu_e500->num_shared_tlb_pages = num_pages; | |
1251 | ||
1252 | vcpu_e500->gtlb_params[0].ways = params.tlb_ways[0]; | |
1253 | vcpu_e500->gtlb_params[0].sets = sets; | |
1254 | ||
1255 | vcpu_e500->gtlb_params[1].ways = params.tlb_sizes[1]; | |
1256 | vcpu_e500->gtlb_params[1].sets = 1; | |
1257 | ||
1258 | return 0; | |
1259 | ||
1260 | err_put_page: | |
1261 | kfree(privs[0]); | |
1262 | kfree(privs[1]); | |
1263 | ||
1264 | for (i = 0; i < num_pages; i++) | |
1265 | put_page(pages[i]); | |
1266 | ||
1267 | err_pages: | |
1268 | kfree(pages); | |
1269 | return ret; | |
1270 | } | |
1271 | ||
1272 | int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, | |
1273 | struct kvm_dirty_tlb *dirty) | |
1274 | { | |
1275 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
1276 | ||
1277 | clear_tlb_refs(vcpu_e500); | |
1278 | return 0; | |
bc8080cb HB |
1279 | } |
1280 | ||
1281 | int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500) | |
1282 | { | |
dc83b8bc SW |
1283 | int entry_size = sizeof(struct kvm_book3e_206_tlb_entry); |
1284 | int entries = KVM_E500_TLB0_SIZE + KVM_E500_TLB1_SIZE; | |
1285 | ||
0164c0f0 SW |
1286 | host_tlb_params[0].entries = mfspr(SPRN_TLB0CFG) & TLBnCFG_N_ENTRY; |
1287 | host_tlb_params[1].entries = mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY; | |
1288 | ||
1289 | /* | |
1290 | * This should never happen on real e500 hardware, but is | |
1291 | * architecturally possible -- e.g. in some weird nested | |
1292 | * virtualization case. | |
1293 | */ | |
1294 | if (host_tlb_params[0].entries == 0 || | |
1295 | host_tlb_params[1].entries == 0) { | |
1296 | pr_err("%s: need to know host tlb size\n", __func__); | |
1297 | return -ENODEV; | |
1298 | } | |
1299 | ||
1300 | host_tlb_params[0].ways = (mfspr(SPRN_TLB0CFG) & TLBnCFG_ASSOC) >> | |
1301 | TLBnCFG_ASSOC_SHIFT; | |
1302 | host_tlb_params[1].ways = host_tlb_params[1].entries; | |
1303 | ||
1304 | if (!is_power_of_2(host_tlb_params[0].entries) || | |
1305 | !is_power_of_2(host_tlb_params[0].ways) || | |
1306 | host_tlb_params[0].entries < host_tlb_params[0].ways || | |
1307 | host_tlb_params[0].ways == 0) { | |
1308 | pr_err("%s: bad tlb0 host config: %u entries %u ways\n", | |
1309 | __func__, host_tlb_params[0].entries, | |
1310 | host_tlb_params[0].ways); | |
1311 | return -ENODEV; | |
1312 | } | |
1313 | ||
1314 | host_tlb_params[0].sets = | |
1315 | host_tlb_params[0].entries / host_tlb_params[0].ways; | |
1316 | host_tlb_params[1].sets = 1; | |
bc8080cb | 1317 | |
dc83b8bc SW |
1318 | vcpu_e500->gtlb_params[0].entries = KVM_E500_TLB0_SIZE; |
1319 | vcpu_e500->gtlb_params[1].entries = KVM_E500_TLB1_SIZE; | |
bc8080cb | 1320 | |
dc83b8bc SW |
1321 | vcpu_e500->gtlb_params[0].ways = KVM_E500_TLB0_WAY_NUM; |
1322 | vcpu_e500->gtlb_params[0].sets = | |
1323 | KVM_E500_TLB0_SIZE / KVM_E500_TLB0_WAY_NUM; | |
1324 | ||
1325 | vcpu_e500->gtlb_params[1].ways = KVM_E500_TLB1_SIZE; | |
1326 | vcpu_e500->gtlb_params[1].sets = 1; | |
1327 | ||
1328 | vcpu_e500->gtlb_arch = kmalloc(entries * entry_size, GFP_KERNEL); | |
1329 | if (!vcpu_e500->gtlb_arch) | |
1330 | return -ENOMEM; | |
1331 | ||
1332 | vcpu_e500->gtlb_offset[0] = 0; | |
1333 | vcpu_e500->gtlb_offset[1] = KVM_E500_TLB0_SIZE; | |
0164c0f0 SW |
1334 | |
1335 | vcpu_e500->tlb_refs[0] = | |
1336 | kzalloc(sizeof(struct tlbe_ref) * host_tlb_params[0].entries, | |
1337 | GFP_KERNEL); | |
1338 | if (!vcpu_e500->tlb_refs[0]) | |
1339 | goto err; | |
1340 | ||
1341 | vcpu_e500->tlb_refs[1] = | |
1342 | kzalloc(sizeof(struct tlbe_ref) * host_tlb_params[1].entries, | |
1343 | GFP_KERNEL); | |
1344 | if (!vcpu_e500->tlb_refs[1]) | |
1345 | goto err; | |
1346 | ||
dc83b8bc SW |
1347 | vcpu_e500->gtlb_priv[0] = kzalloc(sizeof(struct tlbe_ref) * |
1348 | vcpu_e500->gtlb_params[0].entries, | |
1349 | GFP_KERNEL); | |
0164c0f0 SW |
1350 | if (!vcpu_e500->gtlb_priv[0]) |
1351 | goto err; | |
1352 | ||
dc83b8bc SW |
1353 | vcpu_e500->gtlb_priv[1] = kzalloc(sizeof(struct tlbe_ref) * |
1354 | vcpu_e500->gtlb_params[1].entries, | |
1355 | GFP_KERNEL); | |
0164c0f0 SW |
1356 | if (!vcpu_e500->gtlb_priv[1]) |
1357 | goto err; | |
bc8080cb | 1358 | |
dd9ebf1f | 1359 | if (kvmppc_e500_id_table_alloc(vcpu_e500) == NULL) |
0164c0f0 | 1360 | goto err; |
dd9ebf1f | 1361 | |
da15bf43 | 1362 | /* Init TLB configuration register */ |
7b11dc99 SW |
1363 | vcpu_e500->tlb0cfg = mfspr(SPRN_TLB0CFG) & |
1364 | ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); | |
dc83b8bc | 1365 | vcpu_e500->tlb0cfg |= vcpu_e500->gtlb_params[0].entries; |
7b11dc99 SW |
1366 | vcpu_e500->tlb0cfg |= |
1367 | vcpu_e500->gtlb_params[0].ways << TLBnCFG_ASSOC_SHIFT; | |
1368 | ||
1369 | vcpu_e500->tlb1cfg = mfspr(SPRN_TLB1CFG) & | |
1370 | ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); | |
1371 | vcpu_e500->tlb0cfg |= vcpu_e500->gtlb_params[1].entries; | |
1372 | vcpu_e500->tlb0cfg |= | |
1373 | vcpu_e500->gtlb_params[1].ways << TLBnCFG_ASSOC_SHIFT; | |
da15bf43 | 1374 | |
bc8080cb HB |
1375 | return 0; |
1376 | ||
0164c0f0 | 1377 | err: |
dc83b8bc | 1378 | free_gtlb(vcpu_e500); |
0164c0f0 SW |
1379 | kfree(vcpu_e500->tlb_refs[0]); |
1380 | kfree(vcpu_e500->tlb_refs[1]); | |
bc8080cb HB |
1381 | return -1; |
1382 | } | |
1383 | ||
1384 | void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500) | |
1385 | { | |
dc83b8bc | 1386 | free_gtlb(vcpu_e500); |
dd9ebf1f | 1387 | kvmppc_e500_id_table_free(vcpu_e500); |
0164c0f0 SW |
1388 | |
1389 | kfree(vcpu_e500->tlb_refs[0]); | |
1390 | kfree(vcpu_e500->tlb_refs[1]); | |
bc8080cb | 1391 | } |