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char: cadence_uart: Clean up variable names
[qemu/ar7.git] / target-ppc / mmu_helper.c
blob527c6adca37bdccd442a64499c42ab1380882e0d
1 /*
2 * PowerPC MMU, TLB, SLB and BAT emulation helpers for QEMU.
3 *
4 * Copyright (c) 2003-2007 Jocelyn Mayer
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19 #include "cpu.h"
20 #include "exec/helper-proto.h"
21 #include "sysemu/kvm.h"
22 #include "kvm_ppc.h"
23 #include "mmu-hash64.h"
24 #include "mmu-hash32.h"
25 #include "exec/cpu_ldst.h"
26
27 //#define DEBUG_MMU
28 //#define DEBUG_BATS
29 //#define DEBUG_SOFTWARE_TLB
30 //#define DUMP_PAGE_TABLES
31 //#define DEBUG_SOFTWARE_TLB
32 //#define FLUSH_ALL_TLBS
33
34 #ifdef DEBUG_MMU
35 # define LOG_MMU_STATE(cpu) log_cpu_state((cpu), 0)
36 #else
37 # define LOG_MMU_STATE(cpu) do { } while (0)
38 #endif
39
40 #ifdef DEBUG_SOFTWARE_TLB
41 # define LOG_SWTLB(...) qemu_log(__VA_ARGS__)
42 #else
43 # define LOG_SWTLB(...) do { } while (0)
44 #endif
45
46 #ifdef DEBUG_BATS
47 # define LOG_BATS(...) qemu_log(__VA_ARGS__)
48 #else
49 # define LOG_BATS(...) do { } while (0)
50 #endif
51
52 /*****************************************************************************/
53 /* PowerPC MMU emulation */
54
55 /* Context used internally during MMU translations */
56 typedef struct mmu_ctx_t mmu_ctx_t;
57 struct mmu_ctx_t {
58 hwaddr raddr; /* Real address */
59 hwaddr eaddr; /* Effective address */
60 int prot; /* Protection bits */
61 hwaddr hash[2]; /* Pagetable hash values */
62 target_ulong ptem; /* Virtual segment ID | API */
63 int key; /* Access key */
64 int nx; /* Non-execute area */
65 };
66
67 /* Common routines used by software and hardware TLBs emulation */
68 static inline int pte_is_valid(target_ulong pte0)
69 {
70 return pte0 & 0x80000000 ? 1 : 0;
71 }
72
73 static inline void pte_invalidate(target_ulong *pte0)
74 {
75 *pte0 &= ~0x80000000;
76 }
77
78 #define PTE_PTEM_MASK 0x7FFFFFBF
79 #define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
80
81 static int pp_check(int key, int pp, int nx)
82 {
83 int access;
84
85 /* Compute access rights */
86 access = 0;
87 if (key == 0) {
88 switch (pp) {
89 case 0x0:
90 case 0x1:
91 case 0x2:
92 access |= PAGE_WRITE;
93 /* No break here */
94 case 0x3:
95 access |= PAGE_READ;
96 break;
97 }
98 } else {
99 switch (pp) {
100 case 0x0:
101 access = 0;
102 break;
103 case 0x1:
104 case 0x3:
105 access = PAGE_READ;
106 break;
107 case 0x2:
108 access = PAGE_READ | PAGE_WRITE;
109 break;
110 }
111 }
112 if (nx == 0) {
113 access |= PAGE_EXEC;
114 }
115
116 return access;
117 }
118
119 static int check_prot(int prot, int rw, int access_type)
120 {
121 int ret;
122
123 if (access_type == ACCESS_CODE) {
124 if (prot & PAGE_EXEC) {
125 ret = 0;
126 } else {
127 ret = -2;
128 }
129 } else if (rw) {
130 if (prot & PAGE_WRITE) {
131 ret = 0;
132 } else {
133 ret = -2;
134 }
135 } else {
136 if (prot & PAGE_READ) {
137 ret = 0;
138 } else {
139 ret = -2;
140 }
141 }
142
143 return ret;
144 }
145
146 static inline int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0,
147 target_ulong pte1, int h, int rw, int type)
148 {
149 target_ulong ptem, mmask;
150 int access, ret, pteh, ptev, pp;
151
152 ret = -1;
153 /* Check validity and table match */
154 ptev = pte_is_valid(pte0);
155 pteh = (pte0 >> 6) & 1;
156 if (ptev && h == pteh) {
157 /* Check vsid & api */
158 ptem = pte0 & PTE_PTEM_MASK;
159 mmask = PTE_CHECK_MASK;
160 pp = pte1 & 0x00000003;
161 if (ptem == ctx->ptem) {
162 if (ctx->raddr != (hwaddr)-1ULL) {
163 /* all matches should have equal RPN, WIMG & PP */
164 if ((ctx->raddr & mmask) != (pte1 & mmask)) {
165 qemu_log("Bad RPN/WIMG/PP\n");
166 return -3;
167 }
168 }
169 /* Compute access rights */
170 access = pp_check(ctx->key, pp, ctx->nx);
171 /* Keep the matching PTE informations */
172 ctx->raddr = pte1;
173 ctx->prot = access;
174 ret = check_prot(ctx->prot, rw, type);
175 if (ret == 0) {
176 /* Access granted */
177 qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n");
178 } else {
179 /* Access right violation */
180 qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n");
181 }
182 }
183 }
184
185 return ret;
186 }
187
188 static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p,
189 int ret, int rw)
190 {
191 int store = 0;
192
193 /* Update page flags */
194 if (!(*pte1p & 0x00000100)) {
195 /* Update accessed flag */
196 *pte1p |= 0x00000100;
197 store = 1;
198 }
199 if (!(*pte1p & 0x00000080)) {
200 if (rw == 1 && ret == 0) {
201 /* Update changed flag */
202 *pte1p |= 0x00000080;
203 store = 1;
204 } else {
205 /* Force page fault for first write access */
206 ctx->prot &= ~PAGE_WRITE;
207 }
208 }
209
210 return store;
211 }
212
213 /* Software driven TLB helpers */
214 static inline int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr,
215 int way, int is_code)
216 {
217 int nr;
218
219 /* Select TLB num in a way from address */
220 nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1);
221 /* Select TLB way */
222 nr += env->tlb_per_way * way;
223 /* 6xx have separate TLBs for instructions and data */
224 if (is_code && env->id_tlbs == 1) {
225 nr += env->nb_tlb;
226 }
227
228 return nr;
229 }
230
231 static inline void ppc6xx_tlb_invalidate_all(CPUPPCState *env)
232 {
233 PowerPCCPU *cpu = ppc_env_get_cpu(env);
234 ppc6xx_tlb_t *tlb;
235 int nr, max;
236
237 /* LOG_SWTLB("Invalidate all TLBs\n"); */
238 /* Invalidate all defined software TLB */
239 max = env->nb_tlb;
240 if (env->id_tlbs == 1) {
241 max *= 2;
242 }
243 for (nr = 0; nr < max; nr++) {
244 tlb = &env->tlb.tlb6[nr];
245 pte_invalidate(&tlb->pte0);
246 }
247 tlb_flush(CPU(cpu), 1);
248 }
249
250 static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env,
251 target_ulong eaddr,
252 int is_code, int match_epn)
253 {
254 #if !defined(FLUSH_ALL_TLBS)
255 CPUState *cs = CPU(ppc_env_get_cpu(env));
256 ppc6xx_tlb_t *tlb;
257 int way, nr;
258
259 /* Invalidate ITLB + DTLB, all ways */
260 for (way = 0; way < env->nb_ways; way++) {
261 nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code);
262 tlb = &env->tlb.tlb6[nr];
263 if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) {
264 LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr,
265 env->nb_tlb, eaddr);
266 pte_invalidate(&tlb->pte0);
267 tlb_flush_page(cs, tlb->EPN);
268 }
269 }
270 #else
271 /* XXX: PowerPC specification say this is valid as well */
272 ppc6xx_tlb_invalidate_all(env);
273 #endif
274 }
275
276 static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env,
277 target_ulong eaddr, int is_code)
278 {
279 ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0);
280 }
281
282 static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way,
283 int is_code, target_ulong pte0, target_ulong pte1)
284 {
285 ppc6xx_tlb_t *tlb;
286 int nr;
287
288 nr = ppc6xx_tlb_getnum(env, EPN, way, is_code);
289 tlb = &env->tlb.tlb6[nr];
290 LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx
291 " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1);
292 /* Invalidate any pending reference in QEMU for this virtual address */
293 ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1);
294 tlb->pte0 = pte0;
295 tlb->pte1 = pte1;
296 tlb->EPN = EPN;
297 /* Store last way for LRU mechanism */
298 env->last_way = way;
299 }
300
301 static inline int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx,
302 target_ulong eaddr, int rw, int access_type)
303 {
304 ppc6xx_tlb_t *tlb;
305 int nr, best, way;
306 int ret;
307
308 best = -1;
309 ret = -1; /* No TLB found */
310 for (way = 0; way < env->nb_ways; way++) {
311 nr = ppc6xx_tlb_getnum(env, eaddr, way,
312 access_type == ACCESS_CODE ? 1 : 0);
313 tlb = &env->tlb.tlb6[nr];
314 /* This test "emulates" the PTE index match for hardware TLBs */
315 if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) {
316 LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx
317 "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb,
318 pte_is_valid(tlb->pte0) ? "valid" : "inval",
319 tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr);
320 continue;
321 }
322 LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " "
323 TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb,
324 pte_is_valid(tlb->pte0) ? "valid" : "inval",
325 tlb->EPN, eaddr, tlb->pte1,
326 rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D');
327 switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1, 0, rw, access_type)) {
328 case -3:
329 /* TLB inconsistency */
330 return -1;
331 case -2:
332 /* Access violation */
333 ret = -2;
334 best = nr;
335 break;
336 case -1:
337 default:
338 /* No match */
339 break;
340 case 0:
341 /* access granted */
342 /* XXX: we should go on looping to check all TLBs consistency
343 * but we can speed-up the whole thing as the
344 * result would be undefined if TLBs are not consistent.
345 */
346 ret = 0;
347 best = nr;
348 goto done;
349 }
350 }
351 if (best != -1) {
352 done:
353 LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n",
354 ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret);
355 /* Update page flags */
356 pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, rw);
357 }
358
359 return ret;
360 }
361
362 /* Perform BAT hit & translation */
363 static inline void bat_size_prot(CPUPPCState *env, target_ulong *blp,
364 int *validp, int *protp, target_ulong *BATu,
365 target_ulong *BATl)
366 {
367 target_ulong bl;
368 int pp, valid, prot;
369
370 bl = (*BATu & 0x00001FFC) << 15;
371 valid = 0;
372 prot = 0;
373 if (((msr_pr == 0) && (*BATu & 0x00000002)) ||
374 ((msr_pr != 0) && (*BATu & 0x00000001))) {
375 valid = 1;
376 pp = *BATl & 0x00000003;
377 if (pp != 0) {
378 prot = PAGE_READ | PAGE_EXEC;
379 if (pp == 0x2) {
380 prot |= PAGE_WRITE;
381 }
382 }
383 }
384 *blp = bl;
385 *validp = valid;
386 *protp = prot;
387 }
388
389 static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx,
390 target_ulong virtual, int rw, int type)
391 {
392 target_ulong *BATlt, *BATut, *BATu, *BATl;
393 target_ulong BEPIl, BEPIu, bl;
394 int i, valid, prot;
395 int ret = -1;
396
397 LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__,
398 type == ACCESS_CODE ? 'I' : 'D', virtual);
399 switch (type) {
400 case ACCESS_CODE:
401 BATlt = env->IBAT[1];
402 BATut = env->IBAT[0];
403 break;
404 default:
405 BATlt = env->DBAT[1];
406 BATut = env->DBAT[0];
407 break;
408 }
409 for (i = 0; i < env->nb_BATs; i++) {
410 BATu = &BATut[i];
411 BATl = &BATlt[i];
412 BEPIu = *BATu & 0xF0000000;
413 BEPIl = *BATu & 0x0FFE0000;
414 bat_size_prot(env, &bl, &valid, &prot, BATu, BATl);
415 LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
416 " BATl " TARGET_FMT_lx "\n", __func__,
417 type == ACCESS_CODE ? 'I' : 'D', i, virtual, *BATu, *BATl);
418 if ((virtual & 0xF0000000) == BEPIu &&
419 ((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
420 /* BAT matches */
421 if (valid != 0) {
422 /* Get physical address */
423 ctx->raddr = (*BATl & 0xF0000000) |
424 ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
425 (virtual & 0x0001F000);
426 /* Compute access rights */
427 ctx->prot = prot;
428 ret = check_prot(ctx->prot, rw, type);
429 if (ret == 0) {
430 LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n",
431 i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-',
432 ctx->prot & PAGE_WRITE ? 'W' : '-');
433 }
434 break;
435 }
436 }
437 }
438 if (ret < 0) {
439 #if defined(DEBUG_BATS)
440 if (qemu_log_enabled()) {
441 LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual);
442 for (i = 0; i < 4; i++) {
443 BATu = &BATut[i];
444 BATl = &BATlt[i];
445 BEPIu = *BATu & 0xF0000000;
446 BEPIl = *BATu & 0x0FFE0000;
447 bl = (*BATu & 0x00001FFC) << 15;
448 LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
449 " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " "
450 TARGET_FMT_lx " " TARGET_FMT_lx "\n",
451 __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
452 *BATu, *BATl, BEPIu, BEPIl, bl);
453 }
454 }
455 #endif
456 }
457 /* No hit */
458 return ret;
459 }
460
461 /* Perform segment based translation */
462 static inline int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx,
463 target_ulong eaddr, int rw, int type)
464 {
465 hwaddr hash;
466 target_ulong vsid;
467 int ds, pr, target_page_bits;
468 int ret;
469 target_ulong sr, pgidx;
470
471 pr = msr_pr;
472 ctx->eaddr = eaddr;
473
474 sr = env->sr[eaddr >> 28];
475 ctx->key = (((sr & 0x20000000) && (pr != 0)) ||
476 ((sr & 0x40000000) && (pr == 0))) ? 1 : 0;
477 ds = sr & 0x80000000 ? 1 : 0;
478 ctx->nx = sr & 0x10000000 ? 1 : 0;
479 vsid = sr & 0x00FFFFFF;
480 target_page_bits = TARGET_PAGE_BITS;
481 qemu_log_mask(CPU_LOG_MMU,
482 "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx
483 " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx
484 " ir=%d dr=%d pr=%d %d t=%d\n",
485 eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir,
486 (int)msr_dr, pr != 0 ? 1 : 0, rw, type);
487 pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits;
488 hash = vsid ^ pgidx;
489 ctx->ptem = (vsid << 7) | (pgidx >> 10);
490
491 qemu_log_mask(CPU_LOG_MMU,
492 "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n",
493 ctx->key, ds, ctx->nx, vsid);
494 ret = -1;
495 if (!ds) {
496 /* Check if instruction fetch is allowed, if needed */
497 if (type != ACCESS_CODE || ctx->nx == 0) {
498 /* Page address translation */
499 qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx
500 " htab_mask " TARGET_FMT_plx
501 " hash " TARGET_FMT_plx "\n",
502 env->htab_base, env->htab_mask, hash);
503 ctx->hash[0] = hash;
504 ctx->hash[1] = ~hash;
505
506 /* Initialize real address with an invalid value */
507 ctx->raddr = (hwaddr)-1ULL;
508 /* Software TLB search */
509 ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type);
510 #if defined(DUMP_PAGE_TABLES)
511 if (qemu_log_enabled()) {
512 hwaddr curaddr;
513 uint32_t a0, a1, a2, a3;
514
515 qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx
516 "\n", sdr, mask + 0x80);
517 for (curaddr = sdr; curaddr < (sdr + mask + 0x80);
518 curaddr += 16) {
519 a0 = ldl_phys(curaddr);
520 a1 = ldl_phys(curaddr + 4);
521 a2 = ldl_phys(curaddr + 8);
522 a3 = ldl_phys(curaddr + 12);
523 if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) {
524 qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n",
525 curaddr, a0, a1, a2, a3);
526 }
527 }
528 }
529 #endif
530 } else {
531 qemu_log_mask(CPU_LOG_MMU, "No access allowed\n");
532 ret = -3;
533 }
534 } else {
535 target_ulong sr;
536
537 qemu_log_mask(CPU_LOG_MMU, "direct store...\n");
538 /* Direct-store segment : absolutely *BUGGY* for now */
539
540 /* Direct-store implies a 32-bit MMU.
541 * Check the Segment Register's bus unit ID (BUID).
542 */
543 sr = env->sr[eaddr >> 28];
544 if ((sr & 0x1FF00000) >> 20 == 0x07f) {
545 /* Memory-forced I/O controller interface access */
546 /* If T=1 and BUID=x'07F', the 601 performs a memory access
547 * to SR[28-31] LA[4-31], bypassing all protection mechanisms.
548 */
549 ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF);
550 ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
551 return 0;
552 }
553
554 switch (type) {
555 case ACCESS_INT:
556 /* Integer load/store : only access allowed */
557 break;
558 case ACCESS_CODE:
559 /* No code fetch is allowed in direct-store areas */
560 return -4;
561 case ACCESS_FLOAT:
562 /* Floating point load/store */
563 return -4;
564 case ACCESS_RES:
565 /* lwarx, ldarx or srwcx. */
566 return -4;
567 case ACCESS_CACHE:
568 /* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
569 /* Should make the instruction do no-op.
570 * As it already do no-op, it's quite easy :-)
571 */
572 ctx->raddr = eaddr;
573 return 0;
574 case ACCESS_EXT:
575 /* eciwx or ecowx */
576 return -4;
577 default:
578 qemu_log("ERROR: instruction should not need "
579 "address translation\n");
580 return -4;
581 }
582 if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) {
583 ctx->raddr = eaddr;
584 ret = 2;
585 } else {
586 ret = -2;
587 }
588 }
589
590 return ret;
591 }
592
593 /* Generic TLB check function for embedded PowerPC implementations */
594 static int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb,
595 hwaddr *raddrp,
596 target_ulong address, uint32_t pid, int ext,
597 int i)
598 {
599 target_ulong mask;
600
601 /* Check valid flag */
602 if (!(tlb->prot & PAGE_VALID)) {
603 return -1;
604 }
605 mask = ~(tlb->size - 1);
606 LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx
607 " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid, tlb->EPN,
608 mask, (uint32_t)tlb->PID, tlb->prot);
609 /* Check PID */
610 if (tlb->PID != 0 && tlb->PID != pid) {
611 return -1;
612 }
613 /* Check effective address */
614 if ((address & mask) != tlb->EPN) {
615 return -1;
616 }
617 *raddrp = (tlb->RPN & mask) | (address & ~mask);
618 if (ext) {
619 /* Extend the physical address to 36 bits */
620 *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32;
621 }
622
623 return 0;
624 }
625
626 /* Generic TLB search function for PowerPC embedded implementations */
627 static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address,
628 uint32_t pid)
629 {
630 ppcemb_tlb_t *tlb;
631 hwaddr raddr;
632 int i, ret;
633
634 /* Default return value is no match */
635 ret = -1;
636 for (i = 0; i < env->nb_tlb; i++) {
637 tlb = &env->tlb.tlbe[i];
638 if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) {
639 ret = i;
640 break;
641 }
642 }
643
644 return ret;
645 }
646
647 /* Helpers specific to PowerPC 40x implementations */
648 static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env)
649 {
650 PowerPCCPU *cpu = ppc_env_get_cpu(env);
651 ppcemb_tlb_t *tlb;
652 int i;
653
654 for (i = 0; i < env->nb_tlb; i++) {
655 tlb = &env->tlb.tlbe[i];
656 tlb->prot &= ~PAGE_VALID;
657 }
658 tlb_flush(CPU(cpu), 1);
659 }
660
661 static inline void ppc4xx_tlb_invalidate_virt(CPUPPCState *env,
662 target_ulong eaddr, uint32_t pid)
663 {
664 #if !defined(FLUSH_ALL_TLBS)
665 CPUState *cs = CPU(ppc_env_get_cpu(env));
666 ppcemb_tlb_t *tlb;
667 hwaddr raddr;
668 target_ulong page, end;
669 int i;
670
671 for (i = 0; i < env->nb_tlb; i++) {
672 tlb = &env->tlb.tlbe[i];
673 if (ppcemb_tlb_check(env, tlb, &raddr, eaddr, pid, 0, i) == 0) {
674 end = tlb->EPN + tlb->size;
675 for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) {
676 tlb_flush_page(cs, page);
677 }
678 tlb->prot &= ~PAGE_VALID;
679 break;
680 }
681 }
682 #else
683 ppc4xx_tlb_invalidate_all(env);
684 #endif
685 }
686
687 static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
688 target_ulong address, int rw,
689 int access_type)
690 {
691 ppcemb_tlb_t *tlb;
692 hwaddr raddr;
693 int i, ret, zsel, zpr, pr;
694
695 ret = -1;
696 raddr = (hwaddr)-1ULL;
697 pr = msr_pr;
698 for (i = 0; i < env->nb_tlb; i++) {
699 tlb = &env->tlb.tlbe[i];
700 if (ppcemb_tlb_check(env, tlb, &raddr, address,
701 env->spr[SPR_40x_PID], 0, i) < 0) {
702 continue;
703 }
704 zsel = (tlb->attr >> 4) & 0xF;
705 zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3;
706 LOG_SWTLB("%s: TLB %d zsel %d zpr %d rw %d attr %08x\n",
707 __func__, i, zsel, zpr, rw, tlb->attr);
708 /* Check execute enable bit */
709 switch (zpr) {
710 case 0x2:
711 if (pr != 0) {
712 goto check_perms;
713 }
714 /* No break here */
715 case 0x3:
716 /* All accesses granted */
717 ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
718 ret = 0;
719 break;
720 case 0x0:
721 if (pr != 0) {
722 /* Raise Zone protection fault. */
723 env->spr[SPR_40x_ESR] = 1 << 22;
724 ctx->prot = 0;
725 ret = -2;
726 break;
727 }
728 /* No break here */
729 case 0x1:
730 check_perms:
731 /* Check from TLB entry */
732 ctx->prot = tlb->prot;
733 ret = check_prot(ctx->prot, rw, access_type);
734 if (ret == -2) {
735 env->spr[SPR_40x_ESR] = 0;
736 }
737 break;
738 }
739 if (ret >= 0) {
740 ctx->raddr = raddr;
741 LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
742 " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
743 ret);
744 return 0;
745 }
746 }
747 LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
748 " %d %d\n", __func__, address, raddr, ctx->prot, ret);
749
750 return ret;
751 }
752
753 void store_40x_sler(CPUPPCState *env, uint32_t val)
754 {
755 PowerPCCPU *cpu = ppc_env_get_cpu(env);
756
757 /* XXX: TO BE FIXED */
758 if (val != 0x00000000) {
759 cpu_abort(CPU(cpu), "Little-endian regions are not supported by now\n");
760 }
761 env->spr[SPR_405_SLER] = val;
762 }
763
764 static inline int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb,
765 hwaddr *raddr, int *prot,
766 target_ulong address, int rw,
767 int access_type, int i)
768 {
769 int ret, prot2;
770
771 if (ppcemb_tlb_check(env, tlb, raddr, address,
772 env->spr[SPR_BOOKE_PID],
773 !env->nb_pids, i) >= 0) {
774 goto found_tlb;
775 }
776
777 if (env->spr[SPR_BOOKE_PID1] &&
778 ppcemb_tlb_check(env, tlb, raddr, address,
779 env->spr[SPR_BOOKE_PID1], 0, i) >= 0) {
780 goto found_tlb;
781 }
782
783 if (env->spr[SPR_BOOKE_PID2] &&
784 ppcemb_tlb_check(env, tlb, raddr, address,
785 env->spr[SPR_BOOKE_PID2], 0, i) >= 0) {
786 goto found_tlb;
787 }
788
789 LOG_SWTLB("%s: TLB entry not found\n", __func__);
790 return -1;
791
792 found_tlb:
793
794 if (msr_pr != 0) {
795 prot2 = tlb->prot & 0xF;
796 } else {
797 prot2 = (tlb->prot >> 4) & 0xF;
798 }
799
800 /* Check the address space */
801 if (access_type == ACCESS_CODE) {
802 if (msr_ir != (tlb->attr & 1)) {
803 LOG_SWTLB("%s: AS doesn't match\n", __func__);
804 return -1;
805 }
806
807 *prot = prot2;
808 if (prot2 & PAGE_EXEC) {
809 LOG_SWTLB("%s: good TLB!\n", __func__);
810 return 0;
811 }
812
813 LOG_SWTLB("%s: no PAGE_EXEC: %x\n", __func__, prot2);
814 ret = -3;
815 } else {
816 if (msr_dr != (tlb->attr & 1)) {
817 LOG_SWTLB("%s: AS doesn't match\n", __func__);
818 return -1;
819 }
820
821 *prot = prot2;
822 if ((!rw && prot2 & PAGE_READ) || (rw && (prot2 & PAGE_WRITE))) {
823 LOG_SWTLB("%s: found TLB!\n", __func__);
824 return 0;
825 }
826
827 LOG_SWTLB("%s: PAGE_READ/WRITE doesn't match: %x\n", __func__, prot2);
828 ret = -2;
829 }
830
831 return ret;
832 }
833
834 static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
835 target_ulong address, int rw,
836 int access_type)
837 {
838 ppcemb_tlb_t *tlb;
839 hwaddr raddr;
840 int i, ret;
841
842 ret = -1;
843 raddr = (hwaddr)-1ULL;
844 for (i = 0; i < env->nb_tlb; i++) {
845 tlb = &env->tlb.tlbe[i];
846 ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, rw,
847 access_type, i);
848 if (!ret) {
849 break;
850 }
851 }
852
853 if (ret >= 0) {
854 ctx->raddr = raddr;
855 LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
856 " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
857 ret);
858 } else {
859 LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
860 " %d %d\n", __func__, address, raddr, ctx->prot, ret);
861 }
862
863 return ret;
864 }
865
866 static void booke206_flush_tlb(CPUPPCState *env, int flags,
867 const int check_iprot)
868 {
869 PowerPCCPU *cpu = ppc_env_get_cpu(env);
870 int tlb_size;
871 int i, j;
872 ppcmas_tlb_t *tlb = env->tlb.tlbm;
873
874 for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
875 if (flags & (1 << i)) {
876 tlb_size = booke206_tlb_size(env, i);
877 for (j = 0; j < tlb_size; j++) {
878 if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) {
879 tlb[j].mas1 &= ~MAS1_VALID;
880 }
881 }
882 }
883 tlb += booke206_tlb_size(env, i);
884 }
885
886 tlb_flush(CPU(cpu), 1);
887 }
888
889 static hwaddr booke206_tlb_to_page_size(CPUPPCState *env,
890 ppcmas_tlb_t *tlb)
891 {
892 int tlbm_size;
893
894 tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
895
896 return 1024ULL << tlbm_size;
897 }
898
899 /* TLB check function for MAS based SoftTLBs */
900 static int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb,
901 hwaddr *raddrp, target_ulong address,
902 uint32_t pid)
903 {
904 hwaddr mask;
905 uint32_t tlb_pid;
906
907 if (!msr_cm) {
908 /* In 32bit mode we can only address 32bit EAs */
909 address = (uint32_t)address;
910 }
911
912 /* Check valid flag */
913 if (!(tlb->mas1 & MAS1_VALID)) {
914 return -1;
915 }
916
917 mask = ~(booke206_tlb_to_page_size(env, tlb) - 1);
918 LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%"
919 PRIx64 " mask=0x" TARGET_FMT_lx " MAS7_3=0x%" PRIx64 " MAS8=%x\n",
920 __func__, address, pid, tlb->mas1, tlb->mas2, mask, tlb->mas7_3,
921 tlb->mas8);
922
923 /* Check PID */
924 tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT;
925 if (tlb_pid != 0 && tlb_pid != pid) {
926 return -1;
927 }
928
929 /* Check effective address */
930 if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) {
931 return -1;
932 }
933
934 if (raddrp) {
935 *raddrp = (tlb->mas7_3 & mask) | (address & ~mask);
936 }
937
938 return 0;
939 }
940
941 static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb,
942 hwaddr *raddr, int *prot,
943 target_ulong address, int rw,
944 int access_type)
945 {
946 int ret;
947 int prot2 = 0;
948
949 if (ppcmas_tlb_check(env, tlb, raddr, address,
950 env->spr[SPR_BOOKE_PID]) >= 0) {
951 goto found_tlb;
952 }
953
954 if (env->spr[SPR_BOOKE_PID1] &&
955 ppcmas_tlb_check(env, tlb, raddr, address,
956 env->spr[SPR_BOOKE_PID1]) >= 0) {
957 goto found_tlb;
958 }
959
960 if (env->spr[SPR_BOOKE_PID2] &&
961 ppcmas_tlb_check(env, tlb, raddr, address,
962 env->spr[SPR_BOOKE_PID2]) >= 0) {
963 goto found_tlb;
964 }
965
966 LOG_SWTLB("%s: TLB entry not found\n", __func__);
967 return -1;
968
969 found_tlb:
970
971 if (msr_pr != 0) {
972 if (tlb->mas7_3 & MAS3_UR) {
973 prot2 |= PAGE_READ;
974 }
975 if (tlb->mas7_3 & MAS3_UW) {
976 prot2 |= PAGE_WRITE;
977 }
978 if (tlb->mas7_3 & MAS3_UX) {
979 prot2 |= PAGE_EXEC;
980 }
981 } else {
982 if (tlb->mas7_3 & MAS3_SR) {
983 prot2 |= PAGE_READ;
984 }
985 if (tlb->mas7_3 & MAS3_SW) {
986 prot2 |= PAGE_WRITE;
987 }
988 if (tlb->mas7_3 & MAS3_SX) {
989 prot2 |= PAGE_EXEC;
990 }
991 }
992
993 /* Check the address space and permissions */
994 if (access_type == ACCESS_CODE) {
995 if (msr_ir != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
996 LOG_SWTLB("%s: AS doesn't match\n", __func__);
997 return -1;
998 }
999
1000 *prot = prot2;
1001 if (prot2 & PAGE_EXEC) {
1002 LOG_SWTLB("%s: good TLB!\n", __func__);
1003 return 0;
1004 }
1005
1006 LOG_SWTLB("%s: no PAGE_EXEC: %x\n", __func__, prot2);
1007 ret = -3;
1008 } else {
1009 if (msr_dr != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
1010 LOG_SWTLB("%s: AS doesn't match\n", __func__);
1011 return -1;
1012 }
1013
1014 *prot = prot2;
1015 if ((!rw && prot2 & PAGE_READ) || (rw && (prot2 & PAGE_WRITE))) {
1016 LOG_SWTLB("%s: found TLB!\n", __func__);
1017 return 0;
1018 }
1019
1020 LOG_SWTLB("%s: PAGE_READ/WRITE doesn't match: %x\n", __func__, prot2);
1021 ret = -2;
1022 }
1023
1024 return ret;
1025 }
1026
1027 static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
1028 target_ulong address, int rw,
1029 int access_type)
1030 {
1031 ppcmas_tlb_t *tlb;
1032 hwaddr raddr;
1033 int i, j, ret;
1034
1035 ret = -1;
1036 raddr = (hwaddr)-1ULL;
1037
1038 for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
1039 int ways = booke206_tlb_ways(env, i);
1040
1041 for (j = 0; j < ways; j++) {
1042 tlb = booke206_get_tlbm(env, i, address, j);
1043 if (!tlb) {
1044 continue;
1045 }
1046 ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address,
1047 rw, access_type);
1048 if (ret != -1) {
1049 goto found_tlb;
1050 }
1051 }
1052 }
1053
1054 found_tlb:
1055
1056 if (ret >= 0) {
1057 ctx->raddr = raddr;
1058 LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
1059 " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
1060 ret);
1061 } else {
1062 LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
1063 " %d %d\n", __func__, address, raddr, ctx->prot, ret);
1064 }
1065
1066 return ret;
1067 }
1068
1069 static const char *book3e_tsize_to_str[32] = {
1070 "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K",
1071 "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M",
1072 "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G",
1073 "1T", "2T"
1074 };
1075
1076 static void mmubooke_dump_mmu(FILE *f, fprintf_function cpu_fprintf,
1077 CPUPPCState *env)
1078 {
1079 ppcemb_tlb_t *entry;
1080 int i;
1081
1082 if (kvm_enabled() && !env->kvm_sw_tlb) {
1083 cpu_fprintf(f, "Cannot access KVM TLB\n");
1084 return;
1085 }
1086
1087 cpu_fprintf(f, "\nTLB:\n");
1088 cpu_fprintf(f, "Effective Physical Size PID Prot "
1089 "Attr\n");
1090
1091 entry = &env->tlb.tlbe[0];
1092 for (i = 0; i < env->nb_tlb; i++, entry++) {
1093 hwaddr ea, pa;
1094 target_ulong mask;
1095 uint64_t size = (uint64_t)entry->size;
1096 char size_buf[20];
1097
1098 /* Check valid flag */
1099 if (!(entry->prot & PAGE_VALID)) {
1100 continue;
1101 }
1102
1103 mask = ~(entry->size - 1);
1104 ea = entry->EPN & mask;
1105 pa = entry->RPN & mask;
1106 /* Extend the physical address to 36 bits */
1107 pa |= (hwaddr)(entry->RPN & 0xF) << 32;
1108 size /= 1024;
1109 if (size >= 1024) {
1110 snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / 1024);
1111 } else {
1112 snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size);
1113 }
1114 cpu_fprintf(f, "0x%016" PRIx64 " 0x%016" PRIx64 " %s %-5u %08x %08x\n",
1115 (uint64_t)ea, (uint64_t)pa, size_buf, (uint32_t)entry->PID,
1116 entry->prot, entry->attr);
1117 }
1118
1119 }
1120
1121 static void mmubooke206_dump_one_tlb(FILE *f, fprintf_function cpu_fprintf,
1122 CPUPPCState *env, int tlbn, int offset,
1123 int tlbsize)
1124 {
1125 ppcmas_tlb_t *entry;
1126 int i;
1127
1128 cpu_fprintf(f, "\nTLB%d:\n", tlbn);
1129 cpu_fprintf(f, "Effective Physical Size TID TS SRWX"
1130 " URWX WIMGE U0123\n");
1131
1132 entry = &env->tlb.tlbm[offset];
1133 for (i = 0; i < tlbsize; i++, entry++) {
1134 hwaddr ea, pa, size;
1135 int tsize;
1136
1137 if (!(entry->mas1 & MAS1_VALID)) {
1138 continue;
1139 }
1140
1141 tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
1142 size = 1024ULL << tsize;
1143 ea = entry->mas2 & ~(size - 1);
1144 pa = entry->mas7_3 & ~(size - 1);
1145
1146 cpu_fprintf(f, "0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u S%c%c%c"
1147 "U%c%c%c %c%c%c%c%c U%c%c%c%c\n",
1148 (uint64_t)ea, (uint64_t)pa,
1149 book3e_tsize_to_str[tsize],
1150 (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT,
1151 (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT,
1152 entry->mas7_3 & MAS3_SR ? 'R' : '-',
1153 entry->mas7_3 & MAS3_SW ? 'W' : '-',
1154 entry->mas7_3 & MAS3_SX ? 'X' : '-',
1155 entry->mas7_3 & MAS3_UR ? 'R' : '-',
1156 entry->mas7_3 & MAS3_UW ? 'W' : '-',
1157 entry->mas7_3 & MAS3_UX ? 'X' : '-',
1158 entry->mas2 & MAS2_W ? 'W' : '-',
1159 entry->mas2 & MAS2_I ? 'I' : '-',
1160 entry->mas2 & MAS2_M ? 'M' : '-',
1161 entry->mas2 & MAS2_G ? 'G' : '-',
1162 entry->mas2 & MAS2_E ? 'E' : '-',
1163 entry->mas7_3 & MAS3_U0 ? '0' : '-',
1164 entry->mas7_3 & MAS3_U1 ? '1' : '-',
1165 entry->mas7_3 & MAS3_U2 ? '2' : '-',
1166 entry->mas7_3 & MAS3_U3 ? '3' : '-');
1167 }
1168 }
1169
1170 static void mmubooke206_dump_mmu(FILE *f, fprintf_function cpu_fprintf,
1171 CPUPPCState *env)
1172 {
1173 int offset = 0;
1174 int i;
1175
1176 if (kvm_enabled() && !env->kvm_sw_tlb) {
1177 cpu_fprintf(f, "Cannot access KVM TLB\n");
1178 return;
1179 }
1180
1181 for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
1182 int size = booke206_tlb_size(env, i);
1183
1184 if (size == 0) {
1185 continue;
1186 }
1187
1188 mmubooke206_dump_one_tlb(f, cpu_fprintf, env, i, offset, size);
1189 offset += size;
1190 }
1191 }
1192
1193 static void mmu6xx_dump_BATs(FILE *f, fprintf_function cpu_fprintf,
1194 CPUPPCState *env, int type)
1195 {
1196 target_ulong *BATlt, *BATut, *BATu, *BATl;
1197 target_ulong BEPIl, BEPIu, bl;
1198 int i;
1199
1200 switch (type) {
1201 case ACCESS_CODE:
1202 BATlt = env->IBAT[1];
1203 BATut = env->IBAT[0];
1204 break;
1205 default:
1206 BATlt = env->DBAT[1];
1207 BATut = env->DBAT[0];
1208 break;
1209 }
1210
1211 for (i = 0; i < env->nb_BATs; i++) {
1212 BATu = &BATut[i];
1213 BATl = &BATlt[i];
1214 BEPIu = *BATu & 0xF0000000;
1215 BEPIl = *BATu & 0x0FFE0000;
1216 bl = (*BATu & 0x00001FFC) << 15;
1217 cpu_fprintf(f, "%s BAT%d BATu " TARGET_FMT_lx
1218 " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " "
1219 TARGET_FMT_lx " " TARGET_FMT_lx "\n",
1220 type == ACCESS_CODE ? "code" : "data", i,
1221 *BATu, *BATl, BEPIu, BEPIl, bl);
1222 }
1223 }
1224
1225 static void mmu6xx_dump_mmu(FILE *f, fprintf_function cpu_fprintf,
1226 CPUPPCState *env)
1227 {
1228 ppc6xx_tlb_t *tlb;
1229 target_ulong sr;
1230 int type, way, entry, i;
1231
1232 cpu_fprintf(f, "HTAB base = 0x%"HWADDR_PRIx"\n", env->htab_base);
1233 cpu_fprintf(f, "HTAB mask = 0x%"HWADDR_PRIx"\n", env->htab_mask);
1234
1235 cpu_fprintf(f, "\nSegment registers:\n");
1236 for (i = 0; i < 32; i++) {
1237 sr = env->sr[i];
1238 if (sr & 0x80000000) {
1239 cpu_fprintf(f, "%02d T=%d Ks=%d Kp=%d BUID=0x%03x "
1240 "CNTLR_SPEC=0x%05x\n", i,
1241 sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0,
1242 sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) & 0x1FF),
1243 (uint32_t)(sr & 0xFFFFF));
1244 } else {
1245 cpu_fprintf(f, "%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i,
1246 sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0,
1247 sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0,
1248 (uint32_t)(sr & 0x00FFFFFF));
1249 }
1250 }
1251
1252 cpu_fprintf(f, "\nBATs:\n");
1253 mmu6xx_dump_BATs(f, cpu_fprintf, env, ACCESS_INT);
1254 mmu6xx_dump_BATs(f, cpu_fprintf, env, ACCESS_CODE);
1255
1256 if (env->id_tlbs != 1) {
1257 cpu_fprintf(f, "ERROR: 6xx MMU should have separated TLB"
1258 " for code and data\n");
1259 }
1260
1261 cpu_fprintf(f, "\nTLBs [EPN EPN + SIZE]\n");
1262
1263 for (type = 0; type < 2; type++) {
1264 for (way = 0; way < env->nb_ways; way++) {
1265 for (entry = env->nb_tlb * type + env->tlb_per_way * way;
1266 entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1));
1267 entry++) {
1268
1269 tlb = &env->tlb.tlb6[entry];
1270 cpu_fprintf(f, "%s TLB %02d/%02d way:%d %s ["
1271 TARGET_FMT_lx " " TARGET_FMT_lx "]\n",
1272 type ? "code" : "data", entry % env->nb_tlb,
1273 env->nb_tlb, way,
1274 pte_is_valid(tlb->pte0) ? "valid" : "inval",
1275 tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE);
1276 }
1277 }
1278 }
1279 }
1280
1281 void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env)
1282 {
1283 switch (env->mmu_model) {
1284 case POWERPC_MMU_BOOKE:
1285 mmubooke_dump_mmu(f, cpu_fprintf, env);
1286 break;
1287 case POWERPC_MMU_BOOKE206:
1288 mmubooke206_dump_mmu(f, cpu_fprintf, env);
1289 break;
1290 case POWERPC_MMU_SOFT_6xx:
1291 case POWERPC_MMU_SOFT_74xx:
1292 mmu6xx_dump_mmu(f, cpu_fprintf, env);
1293 break;
1294 #if defined(TARGET_PPC64)
1295 case POWERPC_MMU_64B:
1296 case POWERPC_MMU_2_06:
1297 case POWERPC_MMU_2_06a:
1298 case POWERPC_MMU_2_06d:
1299 dump_slb(f, cpu_fprintf, env);
1300 break;
1301 #endif
1302 default:
1303 qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__);
1304 }
1305 }
1306
1307 static inline int check_physical(CPUPPCState *env, mmu_ctx_t *ctx,
1308 target_ulong eaddr, int rw)
1309 {
1310 int in_plb, ret;
1311
1312 ctx->raddr = eaddr;
1313 ctx->prot = PAGE_READ | PAGE_EXEC;
1314 ret = 0;
1315 switch (env->mmu_model) {
1316 case POWERPC_MMU_SOFT_6xx:
1317 case POWERPC_MMU_SOFT_74xx:
1318 case POWERPC_MMU_SOFT_4xx:
1319 case POWERPC_MMU_REAL:
1320 case POWERPC_MMU_BOOKE:
1321 ctx->prot |= PAGE_WRITE;
1322 break;
1323
1324 case POWERPC_MMU_SOFT_4xx_Z:
1325 if (unlikely(msr_pe != 0)) {
1326 /* 403 family add some particular protections,
1327 * using PBL/PBU registers for accesses with no translation.
1328 */
1329 in_plb =
1330 /* Check PLB validity */
1331 (env->pb[0] < env->pb[1] &&
1332 /* and address in plb area */
1333 eaddr >= env->pb[0] && eaddr < env->pb[1]) ||
1334 (env->pb[2] < env->pb[3] &&
1335 eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0;
1336 if (in_plb ^ msr_px) {
1337 /* Access in protected area */
1338 if (rw == 1) {
1339 /* Access is not allowed */
1340 ret = -2;
1341 }
1342 } else {
1343 /* Read-write access is allowed */
1344 ctx->prot |= PAGE_WRITE;
1345 }
1346 }
1347 break;
1348
1349 default:
1350 /* Caller's checks mean we should never get here for other models */
1351 abort();
1352 return -1;
1353 }
1354
1355 return ret;
1356 }
1357
1358 static int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
1359 target_ulong eaddr, int rw, int access_type)
1360 {
1361 PowerPCCPU *cpu = ppc_env_get_cpu(env);
1362 int ret = -1;
1363 bool real_mode = (access_type == ACCESS_CODE && msr_ir == 0)
1364 || (access_type != ACCESS_CODE && msr_dr == 0);
1365
1366 #if 0
1367 qemu_log("%s\n", __func__);
1368 #endif
1369
1370 switch (env->mmu_model) {
1371 case POWERPC_MMU_SOFT_6xx:
1372 case POWERPC_MMU_SOFT_74xx:
1373 if (real_mode) {
1374 ret = check_physical(env, ctx, eaddr, rw);
1375 } else {
1376 /* Try to find a BAT */
1377 if (env->nb_BATs != 0) {
1378 ret = get_bat_6xx_tlb(env, ctx, eaddr, rw, access_type);
1379 }
1380 if (ret < 0) {
1381 /* We didn't match any BAT entry or don't have BATs */
1382 ret = get_segment_6xx_tlb(env, ctx, eaddr, rw, access_type);
1383 }
1384 }
1385 break;
1386
1387 case POWERPC_MMU_SOFT_4xx:
1388 case POWERPC_MMU_SOFT_4xx_Z:
1389 if (real_mode) {
1390 ret = check_physical(env, ctx, eaddr, rw);
1391 } else {
1392 ret = mmu40x_get_physical_address(env, ctx, eaddr,
1393 rw, access_type);
1394 }
1395 break;
1396 case POWERPC_MMU_BOOKE:
1397 ret = mmubooke_get_physical_address(env, ctx, eaddr,
1398 rw, access_type);
1399 break;
1400 case POWERPC_MMU_BOOKE206:
1401 ret = mmubooke206_get_physical_address(env, ctx, eaddr, rw,
1402 access_type);
1403 break;
1404 case POWERPC_MMU_MPC8xx:
1405 /* XXX: TODO */
1406 cpu_abort(CPU(cpu), "MPC8xx MMU model is not implemented\n");
1407 break;
1408 case POWERPC_MMU_REAL:
1409 if (real_mode) {
1410 ret = check_physical(env, ctx, eaddr, rw);
1411 } else {
1412 cpu_abort(CPU(cpu), "PowerPC in real mode do not do any translation\n");
1413 }
1414 return -1;
1415 default:
1416 cpu_abort(CPU(cpu), "Unknown or invalid MMU model\n");
1417 return -1;
1418 }
1419 #if 0
1420 qemu_log("%s address " TARGET_FMT_lx " => %d " TARGET_FMT_plx "\n",
1421 __func__, eaddr, ret, ctx->raddr);
1422 #endif
1423
1424 return ret;
1425 }
1426
1427 hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
1428 {
1429 PowerPCCPU *cpu = POWERPC_CPU(cs);
1430 CPUPPCState *env = &cpu->env;
1431 mmu_ctx_t ctx;
1432
1433 switch (env->mmu_model) {
1434 #if defined(TARGET_PPC64)
1435 case POWERPC_MMU_64B:
1436 case POWERPC_MMU_2_06:
1437 case POWERPC_MMU_2_06a:
1438 case POWERPC_MMU_2_06d:
1439 return ppc_hash64_get_phys_page_debug(env, addr);
1440 #endif
1441
1442 case POWERPC_MMU_32B:
1443 case POWERPC_MMU_601:
1444 return ppc_hash32_get_phys_page_debug(env, addr);
1445
1446 default:
1447 ;
1448 }
1449
1450 if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT) != 0)) {
1451
1452 /* Some MMUs have separate TLBs for code and data. If we only try an
1453 * ACCESS_INT, we may not be able to read instructions mapped by code
1454 * TLBs, so we also try a ACCESS_CODE.
1455 */
1456 if (unlikely(get_physical_address(env, &ctx, addr, 0,
1457 ACCESS_CODE) != 0)) {
1458 return -1;
1459 }
1460 }
1461
1462 return ctx.raddr & TARGET_PAGE_MASK;
1463 }
1464
1465 static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong address,
1466 int rw)
1467 {
1468 env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK;
1469 env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK;
1470 env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK;
1471 env->spr[SPR_BOOKE_MAS3] = 0;
1472 env->spr[SPR_BOOKE_MAS6] = 0;
1473 env->spr[SPR_BOOKE_MAS7] = 0;
1474
1475 /* AS */
1476 if (((rw == 2) && msr_ir) || ((rw != 2) && msr_dr)) {
1477 env->spr[SPR_BOOKE_MAS1] |= MAS1_TS;
1478 env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS;
1479 }
1480
1481 env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID;
1482 env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK;
1483
1484 switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) {
1485 case MAS4_TIDSELD_PID0:
1486 env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID] << MAS1_TID_SHIFT;
1487 break;
1488 case MAS4_TIDSELD_PID1:
1489 env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID1] << MAS1_TID_SHIFT;
1490 break;
1491 case MAS4_TIDSELD_PID2:
1492 env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID2] << MAS1_TID_SHIFT;
1493 break;
1494 }
1495
1496 env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16;
1497
1498 /* next victim logic */
1499 env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT;
1500 env->last_way++;
1501 env->last_way &= booke206_tlb_ways(env, 0) - 1;
1502 env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT;
1503 }
1504
1505 /* Perform address translation */
1506 static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address,
1507 int rw, int mmu_idx)
1508 {
1509 CPUState *cs = CPU(ppc_env_get_cpu(env));
1510 mmu_ctx_t ctx;
1511 int access_type;
1512 int ret = 0;
1513
1514 if (rw == 2) {
1515 /* code access */
1516 rw = 0;
1517 access_type = ACCESS_CODE;
1518 } else {
1519 /* data access */
1520 access_type = env->access_type;
1521 }
1522 ret = get_physical_address(env, &ctx, address, rw, access_type);
1523 if (ret == 0) {
1524 tlb_set_page(cs, address & TARGET_PAGE_MASK,
1525 ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
1526 mmu_idx, TARGET_PAGE_SIZE);
1527 ret = 0;
1528 } else if (ret < 0) {
1529 LOG_MMU_STATE(cs);
1530 if (access_type == ACCESS_CODE) {
1531 switch (ret) {
1532 case -1:
1533 /* No matches in page tables or TLB */
1534 switch (env->mmu_model) {
1535 case POWERPC_MMU_SOFT_6xx:
1536 cs->exception_index = POWERPC_EXCP_IFTLB;
1537 env->error_code = 1 << 18;
1538 env->spr[SPR_IMISS] = address;
1539 env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
1540 goto tlb_miss;
1541 case POWERPC_MMU_SOFT_74xx:
1542 cs->exception_index = POWERPC_EXCP_IFTLB;
1543 goto tlb_miss_74xx;
1544 case POWERPC_MMU_SOFT_4xx:
1545 case POWERPC_MMU_SOFT_4xx_Z:
1546 cs->exception_index = POWERPC_EXCP_ITLB;
1547 env->error_code = 0;
1548 env->spr[SPR_40x_DEAR] = address;
1549 env->spr[SPR_40x_ESR] = 0x00000000;
1550 break;
1551 case POWERPC_MMU_BOOKE206:
1552 booke206_update_mas_tlb_miss(env, address, rw);
1553 /* fall through */
1554 case POWERPC_MMU_BOOKE:
1555 cs->exception_index = POWERPC_EXCP_ITLB;
1556 env->error_code = 0;
1557 env->spr[SPR_BOOKE_DEAR] = address;
1558 return -1;
1559 case POWERPC_MMU_MPC8xx:
1560 /* XXX: TODO */
1561 cpu_abort(cs, "MPC8xx MMU model is not implemented\n");
1562 break;
1563 case POWERPC_MMU_REAL:
1564 cpu_abort(cs, "PowerPC in real mode should never raise "
1565 "any MMU exceptions\n");
1566 return -1;
1567 default:
1568 cpu_abort(cs, "Unknown or invalid MMU model\n");
1569 return -1;
1570 }
1571 break;
1572 case -2:
1573 /* Access rights violation */
1574 cs->exception_index = POWERPC_EXCP_ISI;
1575 env->error_code = 0x08000000;
1576 break;
1577 case -3:
1578 /* No execute protection violation */
1579 if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
1580 (env->mmu_model == POWERPC_MMU_BOOKE206)) {
1581 env->spr[SPR_BOOKE_ESR] = 0x00000000;
1582 }
1583 cs->exception_index = POWERPC_EXCP_ISI;
1584 env->error_code = 0x10000000;
1585 break;
1586 case -4:
1587 /* Direct store exception */
1588 /* No code fetch is allowed in direct-store areas */
1589 cs->exception_index = POWERPC_EXCP_ISI;
1590 env->error_code = 0x10000000;
1591 break;
1592 }
1593 } else {
1594 switch (ret) {
1595 case -1:
1596 /* No matches in page tables or TLB */
1597 switch (env->mmu_model) {
1598 case POWERPC_MMU_SOFT_6xx:
1599 if (rw == 1) {
1600 cs->exception_index = POWERPC_EXCP_DSTLB;
1601 env->error_code = 1 << 16;
1602 } else {
1603 cs->exception_index = POWERPC_EXCP_DLTLB;
1604 env->error_code = 0;
1605 }
1606 env->spr[SPR_DMISS] = address;
1607 env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
1608 tlb_miss:
1609 env->error_code |= ctx.key << 19;
1610 env->spr[SPR_HASH1] = env->htab_base +
1611 get_pteg_offset32(env, ctx.hash[0]);
1612 env->spr[SPR_HASH2] = env->htab_base +
1613 get_pteg_offset32(env, ctx.hash[1]);
1614 break;
1615 case POWERPC_MMU_SOFT_74xx:
1616 if (rw == 1) {
1617 cs->exception_index = POWERPC_EXCP_DSTLB;
1618 } else {
1619 cs->exception_index = POWERPC_EXCP_DLTLB;
1620 }
1621 tlb_miss_74xx:
1622 /* Implement LRU algorithm */
1623 env->error_code = ctx.key << 19;
1624 env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) |
1625 ((env->last_way + 1) & (env->nb_ways - 1));
1626 env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem;
1627 break;
1628 case POWERPC_MMU_SOFT_4xx:
1629 case POWERPC_MMU_SOFT_4xx_Z:
1630 cs->exception_index = POWERPC_EXCP_DTLB;
1631 env->error_code = 0;
1632 env->spr[SPR_40x_DEAR] = address;
1633 if (rw) {
1634 env->spr[SPR_40x_ESR] = 0x00800000;
1635 } else {
1636 env->spr[SPR_40x_ESR] = 0x00000000;
1637 }
1638 break;
1639 case POWERPC_MMU_MPC8xx:
1640 /* XXX: TODO */
1641 cpu_abort(cs, "MPC8xx MMU model is not implemented\n");
1642 break;
1643 case POWERPC_MMU_BOOKE206:
1644 booke206_update_mas_tlb_miss(env, address, rw);
1645 /* fall through */
1646 case POWERPC_MMU_BOOKE:
1647 cs->exception_index = POWERPC_EXCP_DTLB;
1648 env->error_code = 0;
1649 env->spr[SPR_BOOKE_DEAR] = address;
1650 env->spr[SPR_BOOKE_ESR] = rw ? ESR_ST : 0;
1651 return -1;
1652 case POWERPC_MMU_REAL:
1653 cpu_abort(cs, "PowerPC in real mode should never raise "
1654 "any MMU exceptions\n");
1655 return -1;
1656 default:
1657 cpu_abort(cs, "Unknown or invalid MMU model\n");
1658 return -1;
1659 }
1660 break;
1661 case -2:
1662 /* Access rights violation */
1663 cs->exception_index = POWERPC_EXCP_DSI;
1664 env->error_code = 0;
1665 if (env->mmu_model == POWERPC_MMU_SOFT_4xx
1666 || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) {
1667 env->spr[SPR_40x_DEAR] = address;
1668 if (rw) {
1669 env->spr[SPR_40x_ESR] |= 0x00800000;
1670 }
1671 } else if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
1672 (env->mmu_model == POWERPC_MMU_BOOKE206)) {
1673 env->spr[SPR_BOOKE_DEAR] = address;
1674 env->spr[SPR_BOOKE_ESR] = rw ? ESR_ST : 0;
1675 } else {
1676 env->spr[SPR_DAR] = address;
1677 if (rw == 1) {
1678 env->spr[SPR_DSISR] = 0x0A000000;
1679 } else {
1680 env->spr[SPR_DSISR] = 0x08000000;
1681 }
1682 }
1683 break;
1684 case -4:
1685 /* Direct store exception */
1686 switch (access_type) {
1687 case ACCESS_FLOAT:
1688 /* Floating point load/store */
1689 cs->exception_index = POWERPC_EXCP_ALIGN;
1690 env->error_code = POWERPC_EXCP_ALIGN_FP;
1691 env->spr[SPR_DAR] = address;
1692 break;
1693 case ACCESS_RES:
1694 /* lwarx, ldarx or stwcx. */
1695 cs->exception_index = POWERPC_EXCP_DSI;
1696 env->error_code = 0;
1697 env->spr[SPR_DAR] = address;
1698 if (rw == 1) {
1699 env->spr[SPR_DSISR] = 0x06000000;
1700 } else {
1701 env->spr[SPR_DSISR] = 0x04000000;
1702 }
1703 break;
1704 case ACCESS_EXT:
1705 /* eciwx or ecowx */
1706 cs->exception_index = POWERPC_EXCP_DSI;
1707 env->error_code = 0;
1708 env->spr[SPR_DAR] = address;
1709 if (rw == 1) {
1710 env->spr[SPR_DSISR] = 0x06100000;
1711 } else {
1712 env->spr[SPR_DSISR] = 0x04100000;
1713 }
1714 break;
1715 default:
1716 printf("DSI: invalid exception (%d)\n", ret);
1717 cs->exception_index = POWERPC_EXCP_PROGRAM;
1718 env->error_code =
1719 POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
1720 env->spr[SPR_DAR] = address;
1721 break;
1722 }
1723 break;
1724 }
1725 }
1726 #if 0
1727 printf("%s: set exception to %d %02x\n", __func__,
1728 cs->exception, env->error_code);
1729 #endif
1730 ret = 1;
1731 }
1732
1733 return ret;
1734 }
1735
1736 /*****************************************************************************/
1737 /* BATs management */
1738 #if !defined(FLUSH_ALL_TLBS)
1739 static inline void do_invalidate_BAT(CPUPPCState *env, target_ulong BATu,
1740 target_ulong mask)
1741 {
1742 CPUState *cs = CPU(ppc_env_get_cpu(env));
1743 target_ulong base, end, page;
1744
1745 base = BATu & ~0x0001FFFF;
1746 end = base + mask + 0x00020000;
1747 LOG_BATS("Flush BAT from " TARGET_FMT_lx " to " TARGET_FMT_lx " ("
1748 TARGET_FMT_lx ")\n", base, end, mask);
1749 for (page = base; page != end; page += TARGET_PAGE_SIZE) {
1750 tlb_flush_page(cs, page);
1751 }
1752 LOG_BATS("Flush done\n");
1753 }
1754 #endif
1755
1756 static inline void dump_store_bat(CPUPPCState *env, char ID, int ul, int nr,
1757 target_ulong value)
1758 {
1759 LOG_BATS("Set %cBAT%d%c to " TARGET_FMT_lx " (" TARGET_FMT_lx ")\n", ID,
1760 nr, ul == 0 ? 'u' : 'l', value, env->nip);
1761 }
1762
1763 void helper_store_ibatu(CPUPPCState *env, uint32_t nr, target_ulong value)
1764 {
1765 target_ulong mask;
1766
1767 dump_store_bat(env, 'I', 0, nr, value);
1768 if (env->IBAT[0][nr] != value) {
1769 mask = (value << 15) & 0x0FFE0000UL;
1770 #if !defined(FLUSH_ALL_TLBS)
1771 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1772 #endif
1773 /* When storing valid upper BAT, mask BEPI and BRPN
1774 * and invalidate all TLBs covered by this BAT
1775 */
1776 mask = (value << 15) & 0x0FFE0000UL;
1777 env->IBAT[0][nr] = (value & 0x00001FFFUL) |
1778 (value & ~0x0001FFFFUL & ~mask);
1779 env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) |
1780 (env->IBAT[1][nr] & ~0x0001FFFF & ~mask);
1781 #if !defined(FLUSH_ALL_TLBS)
1782 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1783 #else
1784 tlb_flush(env, 1);
1785 #endif
1786 }
1787 }
1788
1789 void helper_store_ibatl(CPUPPCState *env, uint32_t nr, target_ulong value)
1790 {
1791 dump_store_bat(env, 'I', 1, nr, value);
1792 env->IBAT[1][nr] = value;
1793 }
1794
1795 void helper_store_dbatu(CPUPPCState *env, uint32_t nr, target_ulong value)
1796 {
1797 target_ulong mask;
1798
1799 dump_store_bat(env, 'D', 0, nr, value);
1800 if (env->DBAT[0][nr] != value) {
1801 /* When storing valid upper BAT, mask BEPI and BRPN
1802 * and invalidate all TLBs covered by this BAT
1803 */
1804 mask = (value << 15) & 0x0FFE0000UL;
1805 #if !defined(FLUSH_ALL_TLBS)
1806 do_invalidate_BAT(env, env->DBAT[0][nr], mask);
1807 #endif
1808 mask = (value << 15) & 0x0FFE0000UL;
1809 env->DBAT[0][nr] = (value & 0x00001FFFUL) |
1810 (value & ~0x0001FFFFUL & ~mask);
1811 env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) |
1812 (env->DBAT[1][nr] & ~0x0001FFFF & ~mask);
1813 #if !defined(FLUSH_ALL_TLBS)
1814 do_invalidate_BAT(env, env->DBAT[0][nr], mask);
1815 #else
1816 tlb_flush(env, 1);
1817 #endif
1818 }
1819 }
1820
1821 void helper_store_dbatl(CPUPPCState *env, uint32_t nr, target_ulong value)
1822 {
1823 dump_store_bat(env, 'D', 1, nr, value);
1824 env->DBAT[1][nr] = value;
1825 }
1826
1827 void helper_store_601_batu(CPUPPCState *env, uint32_t nr, target_ulong value)
1828 {
1829 target_ulong mask;
1830 #if defined(FLUSH_ALL_TLBS)
1831 int do_inval;
1832 #endif
1833
1834 dump_store_bat(env, 'I', 0, nr, value);
1835 if (env->IBAT[0][nr] != value) {
1836 #if defined(FLUSH_ALL_TLBS)
1837 do_inval = 0;
1838 #endif
1839 mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
1840 if (env->IBAT[1][nr] & 0x40) {
1841 /* Invalidate BAT only if it is valid */
1842 #if !defined(FLUSH_ALL_TLBS)
1843 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1844 #else
1845 do_inval = 1;
1846 #endif
1847 }
1848 /* When storing valid upper BAT, mask BEPI and BRPN
1849 * and invalidate all TLBs covered by this BAT
1850 */
1851 env->IBAT[0][nr] = (value & 0x00001FFFUL) |
1852 (value & ~0x0001FFFFUL & ~mask);
1853 env->DBAT[0][nr] = env->IBAT[0][nr];
1854 if (env->IBAT[1][nr] & 0x40) {
1855 #if !defined(FLUSH_ALL_TLBS)
1856 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1857 #else
1858 do_inval = 1;
1859 #endif
1860 }
1861 #if defined(FLUSH_ALL_TLBS)
1862 if (do_inval) {
1863 tlb_flush(env, 1);
1864 }
1865 #endif
1866 }
1867 }
1868
1869 void helper_store_601_batl(CPUPPCState *env, uint32_t nr, target_ulong value)
1870 {
1871 #if !defined(FLUSH_ALL_TLBS)
1872 target_ulong mask;
1873 #else
1874 int do_inval;
1875 #endif
1876
1877 dump_store_bat(env, 'I', 1, nr, value);
1878 if (env->IBAT[1][nr] != value) {
1879 #if defined(FLUSH_ALL_TLBS)
1880 do_inval = 0;
1881 #endif
1882 if (env->IBAT[1][nr] & 0x40) {
1883 #if !defined(FLUSH_ALL_TLBS)
1884 mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
1885 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1886 #else
1887 do_inval = 1;
1888 #endif
1889 }
1890 if (value & 0x40) {
1891 #if !defined(FLUSH_ALL_TLBS)
1892 mask = (value << 17) & 0x0FFE0000UL;
1893 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1894 #else
1895 do_inval = 1;
1896 #endif
1897 }
1898 env->IBAT[1][nr] = value;
1899 env->DBAT[1][nr] = value;
1900 #if defined(FLUSH_ALL_TLBS)
1901 if (do_inval) {
1902 tlb_flush(env, 1);
1903 }
1904 #endif
1905 }
1906 }
1907
1908 /*****************************************************************************/
1909 /* TLB management */
1910 void ppc_tlb_invalidate_all(CPUPPCState *env)
1911 {
1912 PowerPCCPU *cpu = ppc_env_get_cpu(env);
1913
1914 switch (env->mmu_model) {
1915 case POWERPC_MMU_SOFT_6xx:
1916 case POWERPC_MMU_SOFT_74xx:
1917 ppc6xx_tlb_invalidate_all(env);
1918 break;
1919 case POWERPC_MMU_SOFT_4xx:
1920 case POWERPC_MMU_SOFT_4xx_Z:
1921 ppc4xx_tlb_invalidate_all(env);
1922 break;
1923 case POWERPC_MMU_REAL:
1924 cpu_abort(CPU(cpu), "No TLB for PowerPC 4xx in real mode\n");
1925 break;
1926 case POWERPC_MMU_MPC8xx:
1927 /* XXX: TODO */
1928 cpu_abort(CPU(cpu), "MPC8xx MMU model is not implemented\n");
1929 break;
1930 case POWERPC_MMU_BOOKE:
1931 tlb_flush(CPU(cpu), 1);
1932 break;
1933 case POWERPC_MMU_BOOKE206:
1934 booke206_flush_tlb(env, -1, 0);
1935 break;
1936 case POWERPC_MMU_32B:
1937 case POWERPC_MMU_601:
1938 #if defined(TARGET_PPC64)
1939 case POWERPC_MMU_64B:
1940 case POWERPC_MMU_2_06:
1941 case POWERPC_MMU_2_06a:
1942 case POWERPC_MMU_2_06d:
1943 #endif /* defined(TARGET_PPC64) */
1944 tlb_flush(CPU(cpu), 1);
1945 break;
1946 default:
1947 /* XXX: TODO */
1948 cpu_abort(CPU(cpu), "Unknown MMU model\n");
1949 break;
1950 }
1951 }
1952
1953 void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr)
1954 {
1955 #if !defined(FLUSH_ALL_TLBS)
1956 PowerPCCPU *cpu = ppc_env_get_cpu(env);
1957 CPUState *cs;
1958
1959 addr &= TARGET_PAGE_MASK;
1960 switch (env->mmu_model) {
1961 case POWERPC_MMU_SOFT_6xx:
1962 case POWERPC_MMU_SOFT_74xx:
1963 ppc6xx_tlb_invalidate_virt(env, addr, 0);
1964 if (env->id_tlbs == 1) {
1965 ppc6xx_tlb_invalidate_virt(env, addr, 1);
1966 }
1967 break;
1968 case POWERPC_MMU_SOFT_4xx:
1969 case POWERPC_MMU_SOFT_4xx_Z:
1970 ppc4xx_tlb_invalidate_virt(env, addr, env->spr[SPR_40x_PID]);
1971 break;
1972 case POWERPC_MMU_REAL:
1973 cpu_abort(CPU(cpu), "No TLB for PowerPC 4xx in real mode\n");
1974 break;
1975 case POWERPC_MMU_MPC8xx:
1976 /* XXX: TODO */
1977 cpu_abort(CPU(cpu), "MPC8xx MMU model is not implemented\n");
1978 break;
1979 case POWERPC_MMU_BOOKE:
1980 /* XXX: TODO */
1981 cpu_abort(CPU(cpu), "BookE MMU model is not implemented\n");
1982 break;
1983 case POWERPC_MMU_BOOKE206:
1984 /* XXX: TODO */
1985 cpu_abort(CPU(cpu), "BookE 2.06 MMU model is not implemented\n");
1986 break;
1987 case POWERPC_MMU_32B:
1988 case POWERPC_MMU_601:
1989 /* tlbie invalidate TLBs for all segments */
1990 addr &= ~((target_ulong)-1ULL << 28);
1991 cs = CPU(cpu);
1992 /* XXX: this case should be optimized,
1993 * giving a mask to tlb_flush_page
1994 */
1995 tlb_flush_page(cs, addr | (0x0 << 28));
1996 tlb_flush_page(cs, addr | (0x1 << 28));
1997 tlb_flush_page(cs, addr | (0x2 << 28));
1998 tlb_flush_page(cs, addr | (0x3 << 28));
1999 tlb_flush_page(cs, addr | (0x4 << 28));
2000 tlb_flush_page(cs, addr | (0x5 << 28));
2001 tlb_flush_page(cs, addr | (0x6 << 28));
2002 tlb_flush_page(cs, addr | (0x7 << 28));
2003 tlb_flush_page(cs, addr | (0x8 << 28));
2004 tlb_flush_page(cs, addr | (0x9 << 28));
2005 tlb_flush_page(cs, addr | (0xA << 28));
2006 tlb_flush_page(cs, addr | (0xB << 28));
2007 tlb_flush_page(cs, addr | (0xC << 28));
2008 tlb_flush_page(cs, addr | (0xD << 28));
2009 tlb_flush_page(cs, addr | (0xE << 28));
2010 tlb_flush_page(cs, addr | (0xF << 28));
2011 break;
2012 #if defined(TARGET_PPC64)
2013 case POWERPC_MMU_64B:
2014 case POWERPC_MMU_2_06:
2015 case POWERPC_MMU_2_06a:
2016 case POWERPC_MMU_2_06d:
2017 /* tlbie invalidate TLBs for all segments */
2018 /* XXX: given the fact that there are too many segments to invalidate,
2019 * and we still don't have a tlb_flush_mask(env, n, mask) in QEMU,
2020 * we just invalidate all TLBs
2021 */
2022 tlb_flush(CPU(cpu), 1);
2023 break;
2024 #endif /* defined(TARGET_PPC64) */
2025 default:
2026 /* XXX: TODO */
2027 cpu_abort(CPU(cpu), "Unknown MMU model\n");
2028 break;
2029 }
2030 #else
2031 ppc_tlb_invalidate_all(env);
2032 #endif
2033 }
2034
2035 /*****************************************************************************/
2036 /* Special registers manipulation */
2037 void ppc_store_sdr1(CPUPPCState *env, target_ulong value)
2038 {
2039 qemu_log_mask(CPU_LOG_MMU, "%s: " TARGET_FMT_lx "\n", __func__, value);
2040 assert(!env->external_htab);
2041 env->spr[SPR_SDR1] = value;
2042 #if defined(TARGET_PPC64)
2043 if (env->mmu_model & POWERPC_MMU_64) {
2044 target_ulong htabsize = value & SDR_64_HTABSIZE;
2045
2046 if (htabsize > 28) {
2047 fprintf(stderr, "Invalid HTABSIZE 0x" TARGET_FMT_lx
2048 " stored in SDR1\n", htabsize);
2049 htabsize = 28;
2050 }
2051 env->htab_mask = (1ULL << (htabsize + 18 - 7)) - 1;
2052 env->htab_base = value & SDR_64_HTABORG;
2053 } else
2054 #endif /* defined(TARGET_PPC64) */
2055 {
2056 /* FIXME: Should check for valid HTABMASK values */
2057 env->htab_mask = ((value & SDR_32_HTABMASK) << 16) | 0xFFFF;
2058 env->htab_base = value & SDR_32_HTABORG;
2059 }
2060 }
2061
2062 /* Segment registers load and store */
2063 target_ulong helper_load_sr(CPUPPCState *env, target_ulong sr_num)
2064 {
2065 #if defined(TARGET_PPC64)
2066 if (env->mmu_model & POWERPC_MMU_64) {
2067 /* XXX */
2068 return 0;
2069 }
2070 #endif
2071 return env->sr[sr_num];
2072 }
2073
2074 void helper_store_sr(CPUPPCState *env, target_ulong srnum, target_ulong value)
2075 {
2076 PowerPCCPU *cpu = ppc_env_get_cpu(env);
2077
2078 qemu_log_mask(CPU_LOG_MMU,
2079 "%s: reg=%d " TARGET_FMT_lx " " TARGET_FMT_lx "\n", __func__,
2080 (int)srnum, value, env->sr[srnum]);
2081 #if defined(TARGET_PPC64)
2082 if (env->mmu_model & POWERPC_MMU_64) {
2083 uint64_t rb = 0, rs = 0;
2084
2085 /* ESID = srnum */
2086 rb |= ((uint32_t)srnum & 0xf) << 28;
2087 /* Set the valid bit */
2088 rb |= SLB_ESID_V;
2089 /* Index = ESID */
2090 rb |= (uint32_t)srnum;
2091
2092 /* VSID = VSID */
2093 rs |= (value & 0xfffffff) << 12;
2094 /* flags = flags */
2095 rs |= ((value >> 27) & 0xf) << 8;
2096
2097 ppc_store_slb(env, rb, rs);
2098 } else
2099 #endif
2100 if (env->sr[srnum] != value) {
2101 env->sr[srnum] = value;
2102 /* Invalidating 256MB of virtual memory in 4kB pages is way longer than
2103 flusing the whole TLB. */
2104 #if !defined(FLUSH_ALL_TLBS) && 0
2105 {
2106 target_ulong page, end;
2107 /* Invalidate 256 MB of virtual memory */
2108 page = (16 << 20) * srnum;
2109 end = page + (16 << 20);
2110 for (; page != end; page += TARGET_PAGE_SIZE) {
2111 tlb_flush_page(CPU(cpu), page);
2112 }
2113 }
2114 #else
2115 tlb_flush(CPU(cpu), 1);
2116 #endif
2117 }
2118 }
2119
2120 /* TLB management */
2121 void helper_tlbia(CPUPPCState *env)
2122 {
2123 ppc_tlb_invalidate_all(env);
2124 }
2125
2126 void helper_tlbie(CPUPPCState *env, target_ulong addr)
2127 {
2128 ppc_tlb_invalidate_one(env, addr);
2129 }
2130
2131 /* Software driven TLBs management */
2132 /* PowerPC 602/603 software TLB load instructions helpers */
2133 static void do_6xx_tlb(CPUPPCState *env, target_ulong new_EPN, int is_code)
2134 {
2135 target_ulong RPN, CMP, EPN;
2136 int way;
2137
2138 RPN = env->spr[SPR_RPA];
2139 if (is_code) {
2140 CMP = env->spr[SPR_ICMP];
2141 EPN = env->spr[SPR_IMISS];
2142 } else {
2143 CMP = env->spr[SPR_DCMP];
2144 EPN = env->spr[SPR_DMISS];
2145 }
2146 way = (env->spr[SPR_SRR1] >> 17) & 1;
2147 (void)EPN; /* avoid a compiler warning */
2148 LOG_SWTLB("%s: EPN " TARGET_FMT_lx " " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx
2149 " PTE1 " TARGET_FMT_lx " way %d\n", __func__, new_EPN, EPN, CMP,
2150 RPN, way);
2151 /* Store this TLB */
2152 ppc6xx_tlb_store(env, (uint32_t)(new_EPN & TARGET_PAGE_MASK),
2153 way, is_code, CMP, RPN);
2154 }
2155
2156 void helper_6xx_tlbd(CPUPPCState *env, target_ulong EPN)
2157 {
2158 do_6xx_tlb(env, EPN, 0);
2159 }
2160
2161 void helper_6xx_tlbi(CPUPPCState *env, target_ulong EPN)
2162 {
2163 do_6xx_tlb(env, EPN, 1);
2164 }
2165
2166 /* PowerPC 74xx software TLB load instructions helpers */
2167 static void do_74xx_tlb(CPUPPCState *env, target_ulong new_EPN, int is_code)
2168 {
2169 target_ulong RPN, CMP, EPN;
2170 int way;
2171
2172 RPN = env->spr[SPR_PTELO];
2173 CMP = env->spr[SPR_PTEHI];
2174 EPN = env->spr[SPR_TLBMISS] & ~0x3;
2175 way = env->spr[SPR_TLBMISS] & 0x3;
2176 (void)EPN; /* avoid a compiler warning */
2177 LOG_SWTLB("%s: EPN " TARGET_FMT_lx " " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx
2178 " PTE1 " TARGET_FMT_lx " way %d\n", __func__, new_EPN, EPN, CMP,
2179 RPN, way);
2180 /* Store this TLB */
2181 ppc6xx_tlb_store(env, (uint32_t)(new_EPN & TARGET_PAGE_MASK),
2182 way, is_code, CMP, RPN);
2183 }
2184
2185 void helper_74xx_tlbd(CPUPPCState *env, target_ulong EPN)
2186 {
2187 do_74xx_tlb(env, EPN, 0);
2188 }
2189
2190 void helper_74xx_tlbi(CPUPPCState *env, target_ulong EPN)
2191 {
2192 do_74xx_tlb(env, EPN, 1);
2193 }
2194
2195 /*****************************************************************************/
2196 /* PowerPC 601 specific instructions (POWER bridge) */
2197
2198 target_ulong helper_rac(CPUPPCState *env, target_ulong addr)
2199 {
2200 mmu_ctx_t ctx;
2201 int nb_BATs;
2202 target_ulong ret = 0;
2203
2204 /* We don't have to generate many instances of this instruction,
2205 * as rac is supervisor only.
2206 */
2207 /* XXX: FIX THIS: Pretend we have no BAT */
2208 nb_BATs = env->nb_BATs;
2209 env->nb_BATs = 0;
2210 if (get_physical_address(env, &ctx, addr, 0, ACCESS_INT) == 0) {
2211 ret = ctx.raddr;
2212 }
2213 env->nb_BATs = nb_BATs;
2214 return ret;
2215 }
2216
2217 static inline target_ulong booke_tlb_to_page_size(int size)
2218 {
2219 return 1024 << (2 * size);
2220 }
2221
2222 static inline int booke_page_size_to_tlb(target_ulong page_size)
2223 {
2224 int size;
2225
2226 switch (page_size) {
2227 case 0x00000400UL:
2228 size = 0x0;
2229 break;
2230 case 0x00001000UL:
2231 size = 0x1;
2232 break;
2233 case 0x00004000UL:
2234 size = 0x2;
2235 break;
2236 case 0x00010000UL:
2237 size = 0x3;
2238 break;
2239 case 0x00040000UL:
2240 size = 0x4;
2241 break;
2242 case 0x00100000UL:
2243 size = 0x5;
2244 break;
2245 case 0x00400000UL:
2246 size = 0x6;
2247 break;
2248 case 0x01000000UL:
2249 size = 0x7;
2250 break;
2251 case 0x04000000UL:
2252 size = 0x8;
2253 break;
2254 case 0x10000000UL:
2255 size = 0x9;
2256 break;
2257 case 0x40000000UL:
2258 size = 0xA;
2259 break;
2260 #if defined(TARGET_PPC64)
2261 case 0x000100000000ULL:
2262 size = 0xB;
2263 break;
2264 case 0x000400000000ULL:
2265 size = 0xC;
2266 break;
2267 case 0x001000000000ULL:
2268 size = 0xD;
2269 break;
2270 case 0x004000000000ULL:
2271 size = 0xE;
2272 break;
2273 case 0x010000000000ULL:
2274 size = 0xF;
2275 break;
2276 #endif
2277 default:
2278 size = -1;
2279 break;
2280 }
2281
2282 return size;
2283 }
2284
2285 /* Helpers for 4xx TLB management */
2286 #define PPC4XX_TLB_ENTRY_MASK 0x0000003f /* Mask for 64 TLB entries */
2287
2288 #define PPC4XX_TLBHI_V 0x00000040
2289 #define PPC4XX_TLBHI_E 0x00000020
2290 #define PPC4XX_TLBHI_SIZE_MIN 0
2291 #define PPC4XX_TLBHI_SIZE_MAX 7
2292 #define PPC4XX_TLBHI_SIZE_DEFAULT 1
2293 #define PPC4XX_TLBHI_SIZE_SHIFT 7
2294 #define PPC4XX_TLBHI_SIZE_MASK 0x00000007
2295
2296 #define PPC4XX_TLBLO_EX 0x00000200
2297 #define PPC4XX_TLBLO_WR 0x00000100
2298 #define PPC4XX_TLBLO_ATTR_MASK 0x000000FF
2299 #define PPC4XX_TLBLO_RPN_MASK 0xFFFFFC00
2300
2301 target_ulong helper_4xx_tlbre_hi(CPUPPCState *env, target_ulong entry)
2302 {
2303 ppcemb_tlb_t *tlb;
2304 target_ulong ret;
2305 int size;
2306
2307 entry &= PPC4XX_TLB_ENTRY_MASK;
2308 tlb = &env->tlb.tlbe[entry];
2309 ret = tlb->EPN;
2310 if (tlb->prot & PAGE_VALID) {
2311 ret |= PPC4XX_TLBHI_V;
2312 }
2313 size = booke_page_size_to_tlb(tlb->size);
2314 if (size < PPC4XX_TLBHI_SIZE_MIN || size > PPC4XX_TLBHI_SIZE_MAX) {
2315 size = PPC4XX_TLBHI_SIZE_DEFAULT;
2316 }
2317 ret |= size << PPC4XX_TLBHI_SIZE_SHIFT;
2318 env->spr[SPR_40x_PID] = tlb->PID;
2319 return ret;
2320 }
2321
2322 target_ulong helper_4xx_tlbre_lo(CPUPPCState *env, target_ulong entry)
2323 {
2324 ppcemb_tlb_t *tlb;
2325 target_ulong ret;
2326
2327 entry &= PPC4XX_TLB_ENTRY_MASK;
2328 tlb = &env->tlb.tlbe[entry];
2329 ret = tlb->RPN;
2330 if (tlb->prot & PAGE_EXEC) {
2331 ret |= PPC4XX_TLBLO_EX;
2332 }
2333 if (tlb->prot & PAGE_WRITE) {
2334 ret |= PPC4XX_TLBLO_WR;
2335 }
2336 return ret;
2337 }
2338
2339 void helper_4xx_tlbwe_hi(CPUPPCState *env, target_ulong entry,
2340 target_ulong val)
2341 {
2342 PowerPCCPU *cpu = ppc_env_get_cpu(env);
2343 CPUState *cs = CPU(cpu);
2344 ppcemb_tlb_t *tlb;
2345 target_ulong page, end;
2346
2347 LOG_SWTLB("%s entry %d val " TARGET_FMT_lx "\n", __func__, (int)entry,
2348 val);
2349 entry &= PPC4XX_TLB_ENTRY_MASK;
2350 tlb = &env->tlb.tlbe[entry];
2351 /* Invalidate previous TLB (if it's valid) */
2352 if (tlb->prot & PAGE_VALID) {
2353 end = tlb->EPN + tlb->size;
2354 LOG_SWTLB("%s: invalidate old TLB %d start " TARGET_FMT_lx " end "
2355 TARGET_FMT_lx "\n", __func__, (int)entry, tlb->EPN, end);
2356 for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) {
2357 tlb_flush_page(cs, page);
2358 }
2359 }
2360 tlb->size = booke_tlb_to_page_size((val >> PPC4XX_TLBHI_SIZE_SHIFT)
2361 & PPC4XX_TLBHI_SIZE_MASK);
2362 /* We cannot handle TLB size < TARGET_PAGE_SIZE.
2363 * If this ever occurs, one should use the ppcemb target instead
2364 * of the ppc or ppc64 one
2365 */
2366 if ((val & PPC4XX_TLBHI_V) && tlb->size < TARGET_PAGE_SIZE) {
2367 cpu_abort(cs, "TLB size " TARGET_FMT_lu " < %u "
2368 "are not supported (%d)\n",
2369 tlb->size, TARGET_PAGE_SIZE, (int)((val >> 7) & 0x7));
2370 }
2371 tlb->EPN = val & ~(tlb->size - 1);
2372 if (val & PPC4XX_TLBHI_V) {
2373 tlb->prot |= PAGE_VALID;
2374 if (val & PPC4XX_TLBHI_E) {
2375 /* XXX: TO BE FIXED */
2376 cpu_abort(cs,
2377 "Little-endian TLB entries are not supported by now\n");
2378 }
2379 } else {
2380 tlb->prot &= ~PAGE_VALID;
2381 }
2382 tlb->PID = env->spr[SPR_40x_PID]; /* PID */
2383 LOG_SWTLB("%s: set up TLB %d RPN " TARGET_FMT_plx " EPN " TARGET_FMT_lx
2384 " size " TARGET_FMT_lx " prot %c%c%c%c PID %d\n", __func__,
2385 (int)entry, tlb->RPN, tlb->EPN, tlb->size,
2386 tlb->prot & PAGE_READ ? 'r' : '-',
2387 tlb->prot & PAGE_WRITE ? 'w' : '-',
2388 tlb->prot & PAGE_EXEC ? 'x' : '-',
2389 tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID);
2390 /* Invalidate new TLB (if valid) */
2391 if (tlb->prot & PAGE_VALID) {
2392 end = tlb->EPN + tlb->size;
2393 LOG_SWTLB("%s: invalidate TLB %d start " TARGET_FMT_lx " end "
2394 TARGET_FMT_lx "\n", __func__, (int)entry, tlb->EPN, end);
2395 for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) {
2396 tlb_flush_page(cs, page);
2397 }
2398 }
2399 }
2400
2401 void helper_4xx_tlbwe_lo(CPUPPCState *env, target_ulong entry,
2402 target_ulong val)
2403 {
2404 ppcemb_tlb_t *tlb;
2405
2406 LOG_SWTLB("%s entry %i val " TARGET_FMT_lx "\n", __func__, (int)entry,
2407 val);
2408 entry &= PPC4XX_TLB_ENTRY_MASK;
2409 tlb = &env->tlb.tlbe[entry];
2410 tlb->attr = val & PPC4XX_TLBLO_ATTR_MASK;
2411 tlb->RPN = val & PPC4XX_TLBLO_RPN_MASK;
2412 tlb->prot = PAGE_READ;
2413 if (val & PPC4XX_TLBLO_EX) {
2414 tlb->prot |= PAGE_EXEC;
2415 }
2416 if (val & PPC4XX_TLBLO_WR) {
2417 tlb->prot |= PAGE_WRITE;
2418 }
2419 LOG_SWTLB("%s: set up TLB %d RPN " TARGET_FMT_plx " EPN " TARGET_FMT_lx
2420 " size " TARGET_FMT_lx " prot %c%c%c%c PID %d\n", __func__,
2421 (int)entry, tlb->RPN, tlb->EPN, tlb->size,
2422 tlb->prot & PAGE_READ ? 'r' : '-',
2423 tlb->prot & PAGE_WRITE ? 'w' : '-',
2424 tlb->prot & PAGE_EXEC ? 'x' : '-',
2425 tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID);
2426 }
2427
2428 target_ulong helper_4xx_tlbsx(CPUPPCState *env, target_ulong address)
2429 {
2430 return ppcemb_tlb_search(env, address, env->spr[SPR_40x_PID]);
2431 }
2432
2433 /* PowerPC 440 TLB management */
2434 void helper_440_tlbwe(CPUPPCState *env, uint32_t word, target_ulong entry,
2435 target_ulong value)
2436 {
2437 PowerPCCPU *cpu = ppc_env_get_cpu(env);
2438 ppcemb_tlb_t *tlb;
2439 target_ulong EPN, RPN, size;
2440 int do_flush_tlbs;
2441
2442 LOG_SWTLB("%s word %d entry %d value " TARGET_FMT_lx "\n",
2443 __func__, word, (int)entry, value);
2444 do_flush_tlbs = 0;
2445 entry &= 0x3F;
2446 tlb = &env->tlb.tlbe[entry];
2447 switch (word) {
2448 default:
2449 /* Just here to please gcc */
2450 case 0:
2451 EPN = value & 0xFFFFFC00;
2452 if ((tlb->prot & PAGE_VALID) && EPN != tlb->EPN) {
2453 do_flush_tlbs = 1;
2454 }
2455 tlb->EPN = EPN;
2456 size = booke_tlb_to_page_size((value >> 4) & 0xF);
2457 if ((tlb->prot & PAGE_VALID) && tlb->size < size) {
2458 do_flush_tlbs = 1;
2459 }
2460 tlb->size = size;
2461 tlb->attr &= ~0x1;
2462 tlb->attr |= (value >> 8) & 1;
2463 if (value & 0x200) {
2464 tlb->prot |= PAGE_VALID;
2465 } else {
2466 if (tlb->prot & PAGE_VALID) {
2467 tlb->prot &= ~PAGE_VALID;
2468 do_flush_tlbs = 1;
2469 }
2470 }
2471 tlb->PID = env->spr[SPR_440_MMUCR] & 0x000000FF;
2472 if (do_flush_tlbs) {
2473 tlb_flush(CPU(cpu), 1);
2474 }
2475 break;
2476 case 1:
2477 RPN = value & 0xFFFFFC0F;
2478 if ((tlb->prot & PAGE_VALID) && tlb->RPN != RPN) {
2479 tlb_flush(CPU(cpu), 1);
2480 }
2481 tlb->RPN = RPN;
2482 break;
2483 case 2:
2484 tlb->attr = (tlb->attr & 0x1) | (value & 0x0000FF00);
2485 tlb->prot = tlb->prot & PAGE_VALID;
2486 if (value & 0x1) {
2487 tlb->prot |= PAGE_READ << 4;
2488 }
2489 if (value & 0x2) {
2490 tlb->prot |= PAGE_WRITE << 4;
2491 }
2492 if (value & 0x4) {
2493 tlb->prot |= PAGE_EXEC << 4;
2494 }
2495 if (value & 0x8) {
2496 tlb->prot |= PAGE_READ;
2497 }
2498 if (value & 0x10) {
2499 tlb->prot |= PAGE_WRITE;
2500 }
2501 if (value & 0x20) {
2502 tlb->prot |= PAGE_EXEC;
2503 }
2504 break;
2505 }
2506 }
2507
2508 target_ulong helper_440_tlbre(CPUPPCState *env, uint32_t word,
2509 target_ulong entry)
2510 {
2511 ppcemb_tlb_t *tlb;
2512 target_ulong ret;
2513 int size;
2514
2515 entry &= 0x3F;
2516 tlb = &env->tlb.tlbe[entry];
2517 switch (word) {
2518 default:
2519 /* Just here to please gcc */
2520 case 0:
2521 ret = tlb->EPN;
2522 size = booke_page_size_to_tlb(tlb->size);
2523 if (size < 0 || size > 0xF) {
2524 size = 1;
2525 }
2526 ret |= size << 4;
2527 if (tlb->attr & 0x1) {
2528 ret |= 0x100;
2529 }
2530 if (tlb->prot & PAGE_VALID) {
2531 ret |= 0x200;
2532 }
2533 env->spr[SPR_440_MMUCR] &= ~0x000000FF;
2534 env->spr[SPR_440_MMUCR] |= tlb->PID;
2535 break;
2536 case 1:
2537 ret = tlb->RPN;
2538 break;
2539 case 2:
2540 ret = tlb->attr & ~0x1;
2541 if (tlb->prot & (PAGE_READ << 4)) {
2542 ret |= 0x1;
2543 }
2544 if (tlb->prot & (PAGE_WRITE << 4)) {
2545 ret |= 0x2;
2546 }
2547 if (tlb->prot & (PAGE_EXEC << 4)) {
2548 ret |= 0x4;
2549 }
2550 if (tlb->prot & PAGE_READ) {
2551 ret |= 0x8;
2552 }
2553 if (tlb->prot & PAGE_WRITE) {
2554 ret |= 0x10;
2555 }
2556 if (tlb->prot & PAGE_EXEC) {
2557 ret |= 0x20;
2558 }
2559 break;
2560 }
2561 return ret;
2562 }
2563
2564 target_ulong helper_440_tlbsx(CPUPPCState *env, target_ulong address)
2565 {
2566 return ppcemb_tlb_search(env, address, env->spr[SPR_440_MMUCR] & 0xFF);
2567 }
2568
2569 /* PowerPC BookE 2.06 TLB management */
2570
2571 static ppcmas_tlb_t *booke206_cur_tlb(CPUPPCState *env)
2572 {
2573 PowerPCCPU *cpu = ppc_env_get_cpu(env);
2574 uint32_t tlbncfg = 0;
2575 int esel = (env->spr[SPR_BOOKE_MAS0] & MAS0_ESEL_MASK) >> MAS0_ESEL_SHIFT;
2576 int ea = (env->spr[SPR_BOOKE_MAS2] & MAS2_EPN_MASK);
2577 int tlb;
2578
2579 tlb = (env->spr[SPR_BOOKE_MAS0] & MAS0_TLBSEL_MASK) >> MAS0_TLBSEL_SHIFT;
2580 tlbncfg = env->spr[SPR_BOOKE_TLB0CFG + tlb];
2581
2582 if ((tlbncfg & TLBnCFG_HES) && (env->spr[SPR_BOOKE_MAS0] & MAS0_HES)) {
2583 cpu_abort(CPU(cpu), "we don't support HES yet\n");
2584 }
2585
2586 return booke206_get_tlbm(env, tlb, ea, esel);
2587 }
2588
2589 void helper_booke_setpid(CPUPPCState *env, uint32_t pidn, target_ulong pid)
2590 {
2591 PowerPCCPU *cpu = ppc_env_get_cpu(env);
2592
2593 env->spr[pidn] = pid;
2594 /* changing PIDs mean we're in a different address space now */
2595 tlb_flush(CPU(cpu), 1);
2596 }
2597
2598 void helper_booke206_tlbwe(CPUPPCState *env)
2599 {
2600 PowerPCCPU *cpu = ppc_env_get_cpu(env);
2601 uint32_t tlbncfg, tlbn;
2602 ppcmas_tlb_t *tlb;
2603 uint32_t size_tlb, size_ps;
2604 target_ulong mask;
2605
2606
2607 switch (env->spr[SPR_BOOKE_MAS0] & MAS0_WQ_MASK) {
2608 case MAS0_WQ_ALWAYS:
2609 /* good to go, write that entry */
2610 break;
2611 case MAS0_WQ_COND:
2612 /* XXX check if reserved */
2613 if (0) {
2614 return;
2615 }
2616 break;
2617 case MAS0_WQ_CLR_RSRV:
2618 /* XXX clear entry */
2619 return;
2620 default:
2621 /* no idea what to do */
2622 return;
2623 }
2624
2625 if (((env->spr[SPR_BOOKE_MAS0] & MAS0_ATSEL) == MAS0_ATSEL_LRAT) &&
2626 !msr_gs) {
2627 /* XXX we don't support direct LRAT setting yet */
2628 fprintf(stderr, "cpu: don't support LRAT setting yet\n");
2629 return;
2630 }
2631
2632 tlbn = (env->spr[SPR_BOOKE_MAS0] & MAS0_TLBSEL_MASK) >> MAS0_TLBSEL_SHIFT;
2633 tlbncfg = env->spr[SPR_BOOKE_TLB0CFG + tlbn];
2634
2635 tlb = booke206_cur_tlb(env);
2636
2637 if (!tlb) {
2638 helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
2639 POWERPC_EXCP_INVAL |
2640 POWERPC_EXCP_INVAL_INVAL);
2641 }
2642
2643 /* check that we support the targeted size */
2644 size_tlb = (env->spr[SPR_BOOKE_MAS1] & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
2645 size_ps = booke206_tlbnps(env, tlbn);
2646 if ((env->spr[SPR_BOOKE_MAS1] & MAS1_VALID) && (tlbncfg & TLBnCFG_AVAIL) &&
2647 !(size_ps & (1 << size_tlb))) {
2648 helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
2649 POWERPC_EXCP_INVAL |
2650 POWERPC_EXCP_INVAL_INVAL);
2651 }
2652
2653 if (msr_gs) {
2654 cpu_abort(CPU(cpu), "missing HV implementation\n");
2655 }
2656 tlb->mas7_3 = ((uint64_t)env->spr[SPR_BOOKE_MAS7] << 32) |
2657 env->spr[SPR_BOOKE_MAS3];
2658 tlb->mas1 = env->spr[SPR_BOOKE_MAS1];
2659
2660 /* MAV 1.0 only */
2661 if (!(tlbncfg & TLBnCFG_AVAIL)) {
2662 /* force !AVAIL TLB entries to correct page size */
2663 tlb->mas1 &= ~MAS1_TSIZE_MASK;
2664 /* XXX can be configured in MMUCSR0 */
2665 tlb->mas1 |= (tlbncfg & TLBnCFG_MINSIZE) >> 12;
2666 }
2667
2668 /* Make a mask from TLB size to discard invalid bits in EPN field */
2669 mask = ~(booke206_tlb_to_page_size(env, tlb) - 1);
2670 /* Add a mask for page attributes */
2671 mask |= MAS2_ACM | MAS2_VLE | MAS2_W | MAS2_I | MAS2_M | MAS2_G | MAS2_E;
2672
2673 if (!msr_cm) {
2674 /* Executing a tlbwe instruction in 32-bit mode will set
2675 * bits 0:31 of the TLB EPN field to zero.
2676 */
2677 mask &= 0xffffffff;
2678 }
2679
2680 tlb->mas2 = env->spr[SPR_BOOKE_MAS2] & mask;
2681
2682 if (!(tlbncfg & TLBnCFG_IPROT)) {
2683 /* no IPROT supported by TLB */
2684 tlb->mas1 &= ~MAS1_IPROT;
2685 }
2686
2687 if (booke206_tlb_to_page_size(env, tlb) == TARGET_PAGE_SIZE) {
2688 tlb_flush_page(CPU(cpu), tlb->mas2 & MAS2_EPN_MASK);
2689 } else {
2690 tlb_flush(CPU(cpu), 1);
2691 }
2692 }
2693
2694 static inline void booke206_tlb_to_mas(CPUPPCState *env, ppcmas_tlb_t *tlb)
2695 {
2696 int tlbn = booke206_tlbm_to_tlbn(env, tlb);
2697 int way = booke206_tlbm_to_way(env, tlb);
2698
2699 env->spr[SPR_BOOKE_MAS0] = tlbn << MAS0_TLBSEL_SHIFT;
2700 env->spr[SPR_BOOKE_MAS0] |= way << MAS0_ESEL_SHIFT;
2701 env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT;
2702
2703 env->spr[SPR_BOOKE_MAS1] = tlb->mas1;
2704 env->spr[SPR_BOOKE_MAS2] = tlb->mas2;
2705 env->spr[SPR_BOOKE_MAS3] = tlb->mas7_3;
2706 env->spr[SPR_BOOKE_MAS7] = tlb->mas7_3 >> 32;
2707 }
2708
2709 void helper_booke206_tlbre(CPUPPCState *env)
2710 {
2711 ppcmas_tlb_t *tlb = NULL;
2712
2713 tlb = booke206_cur_tlb(env);
2714 if (!tlb) {
2715 env->spr[SPR_BOOKE_MAS1] = 0;
2716 } else {
2717 booke206_tlb_to_mas(env, tlb);
2718 }
2719 }
2720
2721 void helper_booke206_tlbsx(CPUPPCState *env, target_ulong address)
2722 {
2723 ppcmas_tlb_t *tlb = NULL;
2724 int i, j;
2725 hwaddr raddr;
2726 uint32_t spid, sas;
2727
2728 spid = (env->spr[SPR_BOOKE_MAS6] & MAS6_SPID_MASK) >> MAS6_SPID_SHIFT;
2729 sas = env->spr[SPR_BOOKE_MAS6] & MAS6_SAS;
2730
2731 for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
2732 int ways = booke206_tlb_ways(env, i);
2733
2734 for (j = 0; j < ways; j++) {
2735 tlb = booke206_get_tlbm(env, i, address, j);
2736
2737 if (!tlb) {
2738 continue;
2739 }
2740
2741 if (ppcmas_tlb_check(env, tlb, &raddr, address, spid)) {
2742 continue;
2743 }
2744
2745 if (sas != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
2746 continue;
2747 }
2748
2749 booke206_tlb_to_mas(env, tlb);
2750 return;
2751 }
2752 }
2753
2754 /* no entry found, fill with defaults */
2755 env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK;
2756 env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK;
2757 env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK;
2758 env->spr[SPR_BOOKE_MAS3] = 0;
2759 env->spr[SPR_BOOKE_MAS7] = 0;
2760
2761 if (env->spr[SPR_BOOKE_MAS6] & MAS6_SAS) {
2762 env->spr[SPR_BOOKE_MAS1] |= MAS1_TS;
2763 }
2764
2765 env->spr[SPR_BOOKE_MAS1] |= (env->spr[SPR_BOOKE_MAS6] >> 16)
2766 << MAS1_TID_SHIFT;
2767
2768 /* next victim logic */
2769 env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT;
2770 env->last_way++;
2771 env->last_way &= booke206_tlb_ways(env, 0) - 1;
2772 env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT;
2773 }
2774
2775 static inline void booke206_invalidate_ea_tlb(CPUPPCState *env, int tlbn,
2776 uint32_t ea)
2777 {
2778 int i;
2779 int ways = booke206_tlb_ways(env, tlbn);
2780 target_ulong mask;
2781
2782 for (i = 0; i < ways; i++) {
2783 ppcmas_tlb_t *tlb = booke206_get_tlbm(env, tlbn, ea, i);
2784 if (!tlb) {
2785 continue;
2786 }
2787 mask = ~(booke206_tlb_to_page_size(env, tlb) - 1);
2788 if (((tlb->mas2 & MAS2_EPN_MASK) == (ea & mask)) &&
2789 !(tlb->mas1 & MAS1_IPROT)) {
2790 tlb->mas1 &= ~MAS1_VALID;
2791 }
2792 }
2793 }
2794
2795 void helper_booke206_tlbivax(CPUPPCState *env, target_ulong address)
2796 {
2797 PowerPCCPU *cpu = ppc_env_get_cpu(env);
2798
2799 if (address & 0x4) {
2800 /* flush all entries */
2801 if (address & 0x8) {
2802 /* flush all of TLB1 */
2803 booke206_flush_tlb(env, BOOKE206_FLUSH_TLB1, 1);
2804 } else {
2805 /* flush all of TLB0 */
2806 booke206_flush_tlb(env, BOOKE206_FLUSH_TLB0, 0);
2807 }
2808 return;
2809 }
2810
2811 if (address & 0x8) {
2812 /* flush TLB1 entries */
2813 booke206_invalidate_ea_tlb(env, 1, address);
2814 tlb_flush(CPU(cpu), 1);
2815 } else {
2816 /* flush TLB0 entries */
2817 booke206_invalidate_ea_tlb(env, 0, address);
2818 tlb_flush_page(CPU(cpu), address & MAS2_EPN_MASK);
2819 }
2820 }
2821
2822 void helper_booke206_tlbilx0(CPUPPCState *env, target_ulong address)
2823 {
2824 /* XXX missing LPID handling */
2825 booke206_flush_tlb(env, -1, 1);
2826 }
2827
2828 void helper_booke206_tlbilx1(CPUPPCState *env, target_ulong address)
2829 {
2830 PowerPCCPU *cpu = ppc_env_get_cpu(env);
2831 int i, j;
2832 int tid = (env->spr[SPR_BOOKE_MAS6] & MAS6_SPID);
2833 ppcmas_tlb_t *tlb = env->tlb.tlbm;
2834 int tlb_size;
2835
2836 /* XXX missing LPID handling */
2837 for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
2838 tlb_size = booke206_tlb_size(env, i);
2839 for (j = 0; j < tlb_size; j++) {
2840 if (!(tlb[j].mas1 & MAS1_IPROT) &&
2841 ((tlb[j].mas1 & MAS1_TID_MASK) == tid)) {
2842 tlb[j].mas1 &= ~MAS1_VALID;
2843 }
2844 }
2845 tlb += booke206_tlb_size(env, i);
2846 }
2847 tlb_flush(CPU(cpu), 1);
2848 }
2849
2850 void helper_booke206_tlbilx3(CPUPPCState *env, target_ulong address)
2851 {
2852 PowerPCCPU *cpu = ppc_env_get_cpu(env);
2853 int i, j;
2854 ppcmas_tlb_t *tlb;
2855 int tid = (env->spr[SPR_BOOKE_MAS6] & MAS6_SPID);
2856 int pid = tid >> MAS6_SPID_SHIFT;
2857 int sgs = env->spr[SPR_BOOKE_MAS5] & MAS5_SGS;
2858 int ind = (env->spr[SPR_BOOKE_MAS6] & MAS6_SIND) ? MAS1_IND : 0;
2859 /* XXX check for unsupported isize and raise an invalid opcode then */
2860 int size = env->spr[SPR_BOOKE_MAS6] & MAS6_ISIZE_MASK;
2861 /* XXX implement MAV2 handling */
2862 bool mav2 = false;
2863
2864 /* XXX missing LPID handling */
2865 /* flush by pid and ea */
2866 for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
2867 int ways = booke206_tlb_ways(env, i);
2868
2869 for (j = 0; j < ways; j++) {
2870 tlb = booke206_get_tlbm(env, i, address, j);
2871 if (!tlb) {
2872 continue;
2873 }
2874 if ((ppcmas_tlb_check(env, tlb, NULL, address, pid) != 0) ||
2875 (tlb->mas1 & MAS1_IPROT) ||
2876 ((tlb->mas1 & MAS1_IND) != ind) ||
2877 ((tlb->mas8 & MAS8_TGS) != sgs)) {
2878 continue;
2879 }
2880 if (mav2 && ((tlb->mas1 & MAS1_TSIZE_MASK) != size)) {
2881 /* XXX only check when MMUCFG[TWC] || TLBnCFG[HES] */
2882 continue;
2883 }
2884 /* XXX e500mc doesn't match SAS, but other cores might */
2885 tlb->mas1 &= ~MAS1_VALID;
2886 }
2887 }
2888 tlb_flush(CPU(cpu), 1);
2889 }
2890
2891 void helper_booke206_tlbflush(CPUPPCState *env, target_ulong type)
2892 {
2893 int flags = 0;
2894
2895 if (type & 2) {
2896 flags |= BOOKE206_FLUSH_TLB1;
2897 }
2898
2899 if (type & 4) {
2900 flags |= BOOKE206_FLUSH_TLB0;
2901 }
2902
2903 booke206_flush_tlb(env, flags, 1);
2904 }
2905
2906
2907 /*****************************************************************************/
2908
2909 /* try to fill the TLB and return an exception if error. If retaddr is
2910 NULL, it means that the function was called in C code (i.e. not
2911 from generated code or from helper.c) */
2912 /* XXX: fix it to restore all registers */
2913 void tlb_fill(CPUState *cs, target_ulong addr, int is_write, int mmu_idx,
2914 uintptr_t retaddr)
2915 {
2916 PowerPCCPU *cpu = POWERPC_CPU(cs);
2917 PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs);
2918 CPUPPCState *env = &cpu->env;
2919 int ret;
2920
2921 if (pcc->handle_mmu_fault) {
2922 ret = pcc->handle_mmu_fault(cpu, addr, is_write, mmu_idx);
2923 } else {
2924 ret = cpu_ppc_handle_mmu_fault(env, addr, is_write, mmu_idx);
2925 }
2926 if (unlikely(ret != 0)) {
2927 if (likely(retaddr)) {
2928 /* now we have a real cpu fault */
2929 cpu_restore_state(cs, retaddr);
2930 }
2931 helper_raise_exception_err(env, cs->exception_index, env->error_code);
2932 }
2933 }
AR7 emulation for QEMU