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qmu-img: fix qemu-img convert to generate a valid image when the source referenced...
[qemu-kvm/fedora.git] / target-ppc / helper.c
blobb7162dfe58a4d197860df78d2b6b2bb1dc83e9e1
1 /*
2 * PowerPC 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 <stdarg.h>
20 #include <stdlib.h>
21 #include <stdio.h>
22 #include <string.h>
23 #include <inttypes.h>
24 #include <signal.h>
25
26 #include "cpu.h"
27 #include "exec-all.h"
28 #include "helper_regs.h"
29 #include "qemu-common.h"
30 #include "kvm.h"
31
32 //#define DEBUG_MMU
33 //#define DEBUG_BATS
34 //#define DEBUG_SLB
35 //#define DEBUG_SOFTWARE_TLB
36 //#define DUMP_PAGE_TABLES
37 //#define DEBUG_EXCEPTIONS
38 //#define FLUSH_ALL_TLBS
39
40 #ifdef DEBUG_MMU
41 # define LOG_MMU(...) qemu_log(__VA_ARGS__)
42 # define LOG_MMU_STATE(env) log_cpu_state((env), 0)
43 #else
44 # define LOG_MMU(...) do { } while (0)
45 # define LOG_MMU_STATE(...) do { } while (0)
46 #endif
47
48
49 #ifdef DEBUG_SOFTWARE_TLB
50 # define LOG_SWTLB(...) qemu_log(__VA_ARGS__)
51 #else
52 # define LOG_SWTLB(...) do { } while (0)
53 #endif
54
55 #ifdef DEBUG_BATS
56 # define LOG_BATS(...) qemu_log(__VA_ARGS__)
57 #else
58 # define LOG_BATS(...) do { } while (0)
59 #endif
60
61 #ifdef DEBUG_SLB
62 # define LOG_SLB(...) qemu_log(__VA_ARGS__)
63 #else
64 # define LOG_SLB(...) do { } while (0)
65 #endif
66
67 #ifdef DEBUG_EXCEPTIONS
68 # define LOG_EXCP(...) qemu_log(__VA_ARGS__)
69 #else
70 # define LOG_EXCP(...) do { } while (0)
71 #endif
72
73
74 /*****************************************************************************/
75 /* PowerPC MMU emulation */
76
77 #if defined(CONFIG_USER_ONLY)
78 int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
79 int mmu_idx, int is_softmmu)
80 {
81 int exception, error_code;
82
83 if (rw == 2) {
84 exception = POWERPC_EXCP_ISI;
85 error_code = 0x40000000;
86 } else {
87 exception = POWERPC_EXCP_DSI;
88 error_code = 0x40000000;
89 if (rw)
90 error_code |= 0x02000000;
91 env->spr[SPR_DAR] = address;
92 env->spr[SPR_DSISR] = error_code;
93 }
94 env->exception_index = exception;
95 env->error_code = error_code;
96
97 return 1;
98 }
99
100 target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
101 {
102 return addr;
103 }
104
105 #else
106 /* Common routines used by software and hardware TLBs emulation */
107 static always_inline int pte_is_valid (target_ulong pte0)
108 {
109 return pte0 & 0x80000000 ? 1 : 0;
110 }
111
112 static always_inline void pte_invalidate (target_ulong *pte0)
113 {
114 *pte0 &= ~0x80000000;
115 }
116
117 #if defined(TARGET_PPC64)
118 static always_inline int pte64_is_valid (target_ulong pte0)
119 {
120 return pte0 & 0x0000000000000001ULL ? 1 : 0;
121 }
122
123 static always_inline void pte64_invalidate (target_ulong *pte0)
124 {
125 *pte0 &= ~0x0000000000000001ULL;
126 }
127 #endif
128
129 #define PTE_PTEM_MASK 0x7FFFFFBF
130 #define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
131 #if defined(TARGET_PPC64)
132 #define PTE64_PTEM_MASK 0xFFFFFFFFFFFFFF80ULL
133 #define PTE64_CHECK_MASK (TARGET_PAGE_MASK | 0x7F)
134 #endif
135
136 static always_inline int pp_check (int key, int pp, int nx)
137 {
138 int access;
139
140 /* Compute access rights */
141 /* When pp is 3/7, the result is undefined. Set it to noaccess */
142 access = 0;
143 if (key == 0) {
144 switch (pp) {
145 case 0x0:
146 case 0x1:
147 case 0x2:
148 access |= PAGE_WRITE;
149 /* No break here */
150 case 0x3:
151 case 0x6:
152 access |= PAGE_READ;
153 break;
154 }
155 } else {
156 switch (pp) {
157 case 0x0:
158 case 0x6:
159 access = 0;
160 break;
161 case 0x1:
162 case 0x3:
163 access = PAGE_READ;
164 break;
165 case 0x2:
166 access = PAGE_READ | PAGE_WRITE;
167 break;
168 }
169 }
170 if (nx == 0)
171 access |= PAGE_EXEC;
172
173 return access;
174 }
175
176 static always_inline int check_prot (int prot, int rw, int access_type)
177 {
178 int ret;
179
180 if (access_type == ACCESS_CODE) {
181 if (prot & PAGE_EXEC)
182 ret = 0;
183 else
184 ret = -2;
185 } else if (rw) {
186 if (prot & PAGE_WRITE)
187 ret = 0;
188 else
189 ret = -2;
190 } else {
191 if (prot & PAGE_READ)
192 ret = 0;
193 else
194 ret = -2;
195 }
196
197 return ret;
198 }
199
200 static always_inline int _pte_check (mmu_ctx_t *ctx, int is_64b,
201 target_ulong pte0, target_ulong pte1,
202 int h, int rw, int type)
203 {
204 target_ulong ptem, mmask;
205 int access, ret, pteh, ptev, pp;
206
207 access = 0;
208 ret = -1;
209 /* Check validity and table match */
210 #if defined(TARGET_PPC64)
211 if (is_64b) {
212 ptev = pte64_is_valid(pte0);
213 pteh = (pte0 >> 1) & 1;
214 } else
215 #endif
216 {
217 ptev = pte_is_valid(pte0);
218 pteh = (pte0 >> 6) & 1;
219 }
220 if (ptev && h == pteh) {
221 /* Check vsid & api */
222 #if defined(TARGET_PPC64)
223 if (is_64b) {
224 ptem = pte0 & PTE64_PTEM_MASK;
225 mmask = PTE64_CHECK_MASK;
226 pp = (pte1 & 0x00000003) | ((pte1 >> 61) & 0x00000004);
227 ctx->nx = (pte1 >> 2) & 1; /* No execute bit */
228 ctx->nx |= (pte1 >> 3) & 1; /* Guarded bit */
229 } else
230 #endif
231 {
232 ptem = pte0 & PTE_PTEM_MASK;
233 mmask = PTE_CHECK_MASK;
234 pp = pte1 & 0x00000003;
235 }
236 if (ptem == ctx->ptem) {
237 if (ctx->raddr != (target_phys_addr_t)-1ULL) {
238 /* all matches should have equal RPN, WIMG & PP */
239 if ((ctx->raddr & mmask) != (pte1 & mmask)) {
240 qemu_log("Bad RPN/WIMG/PP\n");
241 return -3;
242 }
243 }
244 /* Compute access rights */
245 access = pp_check(ctx->key, pp, ctx->nx);
246 /* Keep the matching PTE informations */
247 ctx->raddr = pte1;
248 ctx->prot = access;
249 ret = check_prot(ctx->prot, rw, type);
250 if (ret == 0) {
251 /* Access granted */
252 LOG_MMU("PTE access granted !\n");
253 } else {
254 /* Access right violation */
255 LOG_MMU("PTE access rejected\n");
256 }
257 }
258 }
259
260 return ret;
261 }
262
263 static always_inline int pte32_check (mmu_ctx_t *ctx,
264 target_ulong pte0, target_ulong pte1,
265 int h, int rw, int type)
266 {
267 return _pte_check(ctx, 0, pte0, pte1, h, rw, type);
268 }
269
270 #if defined(TARGET_PPC64)
271 static always_inline int pte64_check (mmu_ctx_t *ctx,
272 target_ulong pte0, target_ulong pte1,
273 int h, int rw, int type)
274 {
275 return _pte_check(ctx, 1, pte0, pte1, h, rw, type);
276 }
277 #endif
278
279 static always_inline int pte_update_flags (mmu_ctx_t *ctx, target_ulong *pte1p,
280 int ret, int rw)
281 {
282 int store = 0;
283
284 /* Update page flags */
285 if (!(*pte1p & 0x00000100)) {
286 /* Update accessed flag */
287 *pte1p |= 0x00000100;
288 store = 1;
289 }
290 if (!(*pte1p & 0x00000080)) {
291 if (rw == 1 && ret == 0) {
292 /* Update changed flag */
293 *pte1p |= 0x00000080;
294 store = 1;
295 } else {
296 /* Force page fault for first write access */
297 ctx->prot &= ~PAGE_WRITE;
298 }
299 }
300
301 return store;
302 }
303
304 /* Software driven TLB helpers */
305 static always_inline int ppc6xx_tlb_getnum (CPUState *env, target_ulong eaddr,
306 int way, int is_code)
307 {
308 int nr;
309
310 /* Select TLB num in a way from address */
311 nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1);
312 /* Select TLB way */
313 nr += env->tlb_per_way * way;
314 /* 6xx have separate TLBs for instructions and data */
315 if (is_code && env->id_tlbs == 1)
316 nr += env->nb_tlb;
317
318 return nr;
319 }
320
321 static always_inline void ppc6xx_tlb_invalidate_all (CPUState *env)
322 {
323 ppc6xx_tlb_t *tlb;
324 int nr, max;
325
326 //LOG_SWTLB("Invalidate all TLBs\n");
327 /* Invalidate all defined software TLB */
328 max = env->nb_tlb;
329 if (env->id_tlbs == 1)
330 max *= 2;
331 for (nr = 0; nr < max; nr++) {
332 tlb = &env->tlb[nr].tlb6;
333 pte_invalidate(&tlb->pte0);
334 }
335 tlb_flush(env, 1);
336 }
337
338 static always_inline void __ppc6xx_tlb_invalidate_virt (CPUState *env,
339 target_ulong eaddr,
340 int is_code,
341 int match_epn)
342 {
343 #if !defined(FLUSH_ALL_TLBS)
344 ppc6xx_tlb_t *tlb;
345 int way, nr;
346
347 /* Invalidate ITLB + DTLB, all ways */
348 for (way = 0; way < env->nb_ways; way++) {
349 nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code);
350 tlb = &env->tlb[nr].tlb6;
351 if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) {
352 LOG_SWTLB("TLB invalidate %d/%d " ADDRX "\n",
353 nr, env->nb_tlb, eaddr);
354 pte_invalidate(&tlb->pte0);
355 tlb_flush_page(env, tlb->EPN);
356 }
357 }
358 #else
359 /* XXX: PowerPC specification say this is valid as well */
360 ppc6xx_tlb_invalidate_all(env);
361 #endif
362 }
363
364 static always_inline void ppc6xx_tlb_invalidate_virt (CPUState *env,
365 target_ulong eaddr,
366 int is_code)
367 {
368 __ppc6xx_tlb_invalidate_virt(env, eaddr, is_code, 0);
369 }
370
371 void ppc6xx_tlb_store (CPUState *env, target_ulong EPN, int way, int is_code,
372 target_ulong pte0, target_ulong pte1)
373 {
374 ppc6xx_tlb_t *tlb;
375 int nr;
376
377 nr = ppc6xx_tlb_getnum(env, EPN, way, is_code);
378 tlb = &env->tlb[nr].tlb6;
379 LOG_SWTLB("Set TLB %d/%d EPN " ADDRX " PTE0 " ADDRX
380 " PTE1 " ADDRX "\n", nr, env->nb_tlb, EPN, pte0, pte1);
381 /* Invalidate any pending reference in Qemu for this virtual address */
382 __ppc6xx_tlb_invalidate_virt(env, EPN, is_code, 1);
383 tlb->pte0 = pte0;
384 tlb->pte1 = pte1;
385 tlb->EPN = EPN;
386 /* Store last way for LRU mechanism */
387 env->last_way = way;
388 }
389
390 static always_inline int ppc6xx_tlb_check (CPUState *env, mmu_ctx_t *ctx,
391 target_ulong eaddr, int rw,
392 int access_type)
393 {
394 ppc6xx_tlb_t *tlb;
395 int nr, best, way;
396 int ret;
397
398 best = -1;
399 ret = -1; /* No TLB found */
400 for (way = 0; way < env->nb_ways; way++) {
401 nr = ppc6xx_tlb_getnum(env, eaddr, way,
402 access_type == ACCESS_CODE ? 1 : 0);
403 tlb = &env->tlb[nr].tlb6;
404 /* This test "emulates" the PTE index match for hardware TLBs */
405 if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) {
406 LOG_SWTLB("TLB %d/%d %s [" ADDRX " " ADDRX
407 "] <> " ADDRX "\n",
408 nr, env->nb_tlb,
409 pte_is_valid(tlb->pte0) ? "valid" : "inval",
410 tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr);
411 continue;
412 }
413 LOG_SWTLB("TLB %d/%d %s " ADDRX " <> " ADDRX " " ADDRX
414 " %c %c\n",
415 nr, env->nb_tlb,
416 pte_is_valid(tlb->pte0) ? "valid" : "inval",
417 tlb->EPN, eaddr, tlb->pte1,
418 rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D');
419 switch (pte32_check(ctx, tlb->pte0, tlb->pte1, 0, rw, access_type)) {
420 case -3:
421 /* TLB inconsistency */
422 return -1;
423 case -2:
424 /* Access violation */
425 ret = -2;
426 best = nr;
427 break;
428 case -1:
429 default:
430 /* No match */
431 break;
432 case 0:
433 /* access granted */
434 /* XXX: we should go on looping to check all TLBs consistency
435 * but we can speed-up the whole thing as the
436 * result would be undefined if TLBs are not consistent.
437 */
438 ret = 0;
439 best = nr;
440 goto done;
441 }
442 }
443 if (best != -1) {
444 done:
445 LOG_SWTLB("found TLB at addr " PADDRX " prot=%01x ret=%d\n",
446 ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret);
447 /* Update page flags */
448 pte_update_flags(ctx, &env->tlb[best].tlb6.pte1, ret, rw);
449 }
450
451 return ret;
452 }
453
454 /* Perform BAT hit & translation */
455 static always_inline void bat_size_prot (CPUState *env, target_ulong *blp,
456 int *validp, int *protp,
457 target_ulong *BATu, target_ulong *BATl)
458 {
459 target_ulong bl;
460 int pp, valid, prot;
461
462 bl = (*BATu & 0x00001FFC) << 15;
463 valid = 0;
464 prot = 0;
465 if (((msr_pr == 0) && (*BATu & 0x00000002)) ||
466 ((msr_pr != 0) && (*BATu & 0x00000001))) {
467 valid = 1;
468 pp = *BATl & 0x00000003;
469 if (pp != 0) {
470 prot = PAGE_READ | PAGE_EXEC;
471 if (pp == 0x2)
472 prot |= PAGE_WRITE;
473 }
474 }
475 *blp = bl;
476 *validp = valid;
477 *protp = prot;
478 }
479
480 static always_inline void bat_601_size_prot (CPUState *env,target_ulong *blp,
481 int *validp, int *protp,
482 target_ulong *BATu,
483 target_ulong *BATl)
484 {
485 target_ulong bl;
486 int key, pp, valid, prot;
487
488 bl = (*BATl & 0x0000003F) << 17;
489 LOG_BATS("b %02x ==> bl " ADDRX " msk " ADDRX "\n",
490 (uint8_t)(*BATl & 0x0000003F), bl, ~bl);
491 prot = 0;
492 valid = (*BATl >> 6) & 1;
493 if (valid) {
494 pp = *BATu & 0x00000003;
495 if (msr_pr == 0)
496 key = (*BATu >> 3) & 1;
497 else
498 key = (*BATu >> 2) & 1;
499 prot = pp_check(key, pp, 0);
500 }
501 *blp = bl;
502 *validp = valid;
503 *protp = prot;
504 }
505
506 static always_inline int get_bat (CPUState *env, mmu_ctx_t *ctx,
507 target_ulong virtual, int rw, int type)
508 {
509 target_ulong *BATlt, *BATut, *BATu, *BATl;
510 target_ulong base, BEPIl, BEPIu, bl;
511 int i, valid, prot;
512 int ret = -1;
513
514 LOG_BATS("%s: %cBAT v " ADDRX "\n", __func__,
515 type == ACCESS_CODE ? 'I' : 'D', virtual);
516 switch (type) {
517 case ACCESS_CODE:
518 BATlt = env->IBAT[1];
519 BATut = env->IBAT[0];
520 break;
521 default:
522 BATlt = env->DBAT[1];
523 BATut = env->DBAT[0];
524 break;
525 }
526 base = virtual & 0xFFFC0000;
527 for (i = 0; i < env->nb_BATs; i++) {
528 BATu = &BATut[i];
529 BATl = &BATlt[i];
530 BEPIu = *BATu & 0xF0000000;
531 BEPIl = *BATu & 0x0FFE0000;
532 if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
533 bat_601_size_prot(env, &bl, &valid, &prot, BATu, BATl);
534 } else {
535 bat_size_prot(env, &bl, &valid, &prot, BATu, BATl);
536 }
537 LOG_BATS("%s: %cBAT%d v " ADDRX " BATu " ADDRX
538 " BATl " ADDRX "\n", __func__,
539 type == ACCESS_CODE ? 'I' : 'D', i, virtual, *BATu, *BATl);
540 if ((virtual & 0xF0000000) == BEPIu &&
541 ((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
542 /* BAT matches */
543 if (valid != 0) {
544 /* Get physical address */
545 ctx->raddr = (*BATl & 0xF0000000) |
546 ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
547 (virtual & 0x0001F000);
548 /* Compute access rights */
549 ctx->prot = prot;
550 ret = check_prot(ctx->prot, rw, type);
551 if (ret == 0)
552 LOG_BATS("BAT %d match: r " PADDRX " prot=%c%c\n",
553 i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-',
554 ctx->prot & PAGE_WRITE ? 'W' : '-');
555 break;
556 }
557 }
558 }
559 if (ret < 0) {
560 #if defined(DEBUG_BATS)
561 if (qemu_log_enabled()) {
562 LOG_BATS("no BAT match for " ADDRX ":\n", virtual);
563 for (i = 0; i < 4; i++) {
564 BATu = &BATut[i];
565 BATl = &BATlt[i];
566 BEPIu = *BATu & 0xF0000000;
567 BEPIl = *BATu & 0x0FFE0000;
568 bl = (*BATu & 0x00001FFC) << 15;
569 LOG_BATS("%s: %cBAT%d v " ADDRX " BATu " ADDRX
570 " BATl " ADDRX " \n\t" ADDRX " " ADDRX " " ADDRX "\n",
571 __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
572 *BATu, *BATl, BEPIu, BEPIl, bl);
573 }
574 }
575 #endif
576 }
577 /* No hit */
578 return ret;
579 }
580
581 /* PTE table lookup */
582 static always_inline int _find_pte (mmu_ctx_t *ctx, int is_64b, int h,
583 int rw, int type,
584 int target_page_bits)
585 {
586 target_ulong base, pte0, pte1;
587 int i, good = -1;
588 int ret, r;
589
590 ret = -1; /* No entry found */
591 base = ctx->pg_addr[h];
592 for (i = 0; i < 8; i++) {
593 #if defined(TARGET_PPC64)
594 if (is_64b) {
595 pte0 = ldq_phys(base + (i * 16));
596 pte1 = ldq_phys(base + (i * 16) + 8);
597
598 /* We have a TLB that saves 4K pages, so let's
599 * split a huge page to 4k chunks */
600 if (target_page_bits != TARGET_PAGE_BITS)
601 pte1 |= (ctx->eaddr & (( 1 << target_page_bits ) - 1))
602 & TARGET_PAGE_MASK;
603
604 r = pte64_check(ctx, pte0, pte1, h, rw, type);
605 LOG_MMU("Load pte from " ADDRX " => " ADDRX " " ADDRX
606 " %d %d %d " ADDRX "\n",
607 base + (i * 16), pte0, pte1,
608 (int)(pte0 & 1), h, (int)((pte0 >> 1) & 1),
609 ctx->ptem);
610 } else
611 #endif
612 {
613 pte0 = ldl_phys(base + (i * 8));
614 pte1 = ldl_phys(base + (i * 8) + 4);
615 r = pte32_check(ctx, pte0, pte1, h, rw, type);
616 LOG_MMU("Load pte from " ADDRX " => " ADDRX " " ADDRX
617 " %d %d %d " ADDRX "\n",
618 base + (i * 8), pte0, pte1,
619 (int)(pte0 >> 31), h, (int)((pte0 >> 6) & 1),
620 ctx->ptem);
621 }
622 switch (r) {
623 case -3:
624 /* PTE inconsistency */
625 return -1;
626 case -2:
627 /* Access violation */
628 ret = -2;
629 good = i;
630 break;
631 case -1:
632 default:
633 /* No PTE match */
634 break;
635 case 0:
636 /* access granted */
637 /* XXX: we should go on looping to check all PTEs consistency
638 * but if we can speed-up the whole thing as the
639 * result would be undefined if PTEs are not consistent.
640 */
641 ret = 0;
642 good = i;
643 goto done;
644 }
645 }
646 if (good != -1) {
647 done:
648 LOG_MMU("found PTE at addr " PADDRX " prot=%01x ret=%d\n",
649 ctx->raddr, ctx->prot, ret);
650 /* Update page flags */
651 pte1 = ctx->raddr;
652 if (pte_update_flags(ctx, &pte1, ret, rw) == 1) {
653 #if defined(TARGET_PPC64)
654 if (is_64b) {
655 stq_phys_notdirty(base + (good * 16) + 8, pte1);
656 } else
657 #endif
658 {
659 stl_phys_notdirty(base + (good * 8) + 4, pte1);
660 }
661 }
662 }
663
664 return ret;
665 }
666
667 static always_inline int find_pte32 (mmu_ctx_t *ctx, int h, int rw,
668 int type, int target_page_bits)
669 {
670 return _find_pte(ctx, 0, h, rw, type, target_page_bits);
671 }
672
673 #if defined(TARGET_PPC64)
674 static always_inline int find_pte64 (mmu_ctx_t *ctx, int h, int rw,
675 int type, int target_page_bits)
676 {
677 return _find_pte(ctx, 1, h, rw, type, target_page_bits);
678 }
679 #endif
680
681 static always_inline int find_pte (CPUState *env, mmu_ctx_t *ctx,
682 int h, int rw, int type,
683 int target_page_bits)
684 {
685 #if defined(TARGET_PPC64)
686 if (env->mmu_model & POWERPC_MMU_64)
687 return find_pte64(ctx, h, rw, type, target_page_bits);
688 #endif
689
690 return find_pte32(ctx, h, rw, type, target_page_bits);
691 }
692
693 #if defined(TARGET_PPC64)
694 static ppc_slb_t *slb_get_entry(CPUPPCState *env, int nr)
695 {
696 ppc_slb_t *retval = &env->slb[nr];
697
698 #if 0 // XXX implement bridge mode?
699 if (env->spr[SPR_ASR] & 1) {
700 target_phys_addr_t sr_base;
701
702 sr_base = env->spr[SPR_ASR] & 0xfffffffffffff000;
703 sr_base += (12 * nr);
704
705 retval->tmp64 = ldq_phys(sr_base);
706 retval->tmp = ldl_phys(sr_base + 8);
707 }
708 #endif
709
710 return retval;
711 }
712
713 static void slb_set_entry(CPUPPCState *env, int nr, ppc_slb_t *slb)
714 {
715 ppc_slb_t *entry = &env->slb[nr];
716
717 if (slb == entry)
718 return;
719
720 entry->tmp64 = slb->tmp64;
721 entry->tmp = slb->tmp;
722 }
723
724 static always_inline int slb_is_valid (ppc_slb_t *slb)
725 {
726 return (int)(slb->tmp64 & 0x0000000008000000ULL);
727 }
728
729 static always_inline void slb_invalidate (ppc_slb_t *slb)
730 {
731 slb->tmp64 &= ~0x0000000008000000ULL;
732 }
733
734 static always_inline int slb_lookup (CPUPPCState *env, target_ulong eaddr,
735 target_ulong *vsid,
736 target_ulong *page_mask, int *attr,
737 int *target_page_bits)
738 {
739 target_ulong mask;
740 int n, ret;
741
742 ret = -5;
743 LOG_SLB("%s: eaddr " ADDRX "\n", __func__, eaddr);
744 mask = 0x0000000000000000ULL; /* Avoid gcc warning */
745 for (n = 0; n < env->slb_nr; n++) {
746 ppc_slb_t *slb = slb_get_entry(env, n);
747
748 LOG_SLB("%s: seg %d %016" PRIx64 " %08"
749 PRIx32 "\n", __func__, n, slb->tmp64, slb->tmp);
750 if (slb_is_valid(slb)) {
751 /* SLB entry is valid */
752 if (slb->tmp & 0x8) {
753 /* 1 TB Segment */
754 mask = 0xFFFF000000000000ULL;
755 if (target_page_bits)
756 *target_page_bits = 24; // XXX 16M pages?
757 } else {
758 /* 256MB Segment */
759 mask = 0xFFFFFFFFF0000000ULL;
760 if (target_page_bits)
761 *target_page_bits = TARGET_PAGE_BITS;
762 }
763 if ((eaddr & mask) == (slb->tmp64 & mask)) {
764 /* SLB match */
765 *vsid = ((slb->tmp64 << 24) | (slb->tmp >> 8)) & 0x0003FFFFFFFFFFFFULL;
766 *page_mask = ~mask;
767 *attr = slb->tmp & 0xFF;
768 ret = n;
769 break;
770 }
771 }
772 }
773
774 return ret;
775 }
776
777 void ppc_slb_invalidate_all (CPUPPCState *env)
778 {
779 int n, do_invalidate;
780
781 do_invalidate = 0;
782 /* XXX: Warning: slbia never invalidates the first segment */
783 for (n = 1; n < env->slb_nr; n++) {
784 ppc_slb_t *slb = slb_get_entry(env, n);
785
786 if (slb_is_valid(slb)) {
787 slb_invalidate(slb);
788 slb_set_entry(env, n, slb);
789 /* XXX: given the fact that segment size is 256 MB or 1TB,
790 * and we still don't have a tlb_flush_mask(env, n, mask)
791 * in Qemu, we just invalidate all TLBs
792 */
793 do_invalidate = 1;
794 }
795 }
796 if (do_invalidate)
797 tlb_flush(env, 1);
798 }
799
800 void ppc_slb_invalidate_one (CPUPPCState *env, uint64_t T0)
801 {
802 target_ulong vsid, page_mask;
803 int attr;
804 int n;
805
806 n = slb_lookup(env, T0, &vsid, &page_mask, &attr, NULL);
807 if (n >= 0) {
808 ppc_slb_t *slb = slb_get_entry(env, n);
809
810 if (slb_is_valid(slb)) {
811 slb_invalidate(slb);
812 slb_set_entry(env, n, slb);
813 /* XXX: given the fact that segment size is 256 MB or 1TB,
814 * and we still don't have a tlb_flush_mask(env, n, mask)
815 * in Qemu, we just invalidate all TLBs
816 */
817 tlb_flush(env, 1);
818 }
819 }
820 }
821
822 target_ulong ppc_load_slb (CPUPPCState *env, int slb_nr)
823 {
824 target_ulong rt;
825 ppc_slb_t *slb = slb_get_entry(env, slb_nr);
826
827 if (slb_is_valid(slb)) {
828 /* SLB entry is valid */
829 /* Copy SLB bits 62:88 to Rt 37:63 (VSID 23:49) */
830 rt = slb->tmp >> 8; /* 65:88 => 40:63 */
831 rt |= (slb->tmp64 & 0x7) << 24; /* 62:64 => 37:39 */
832 /* Copy SLB bits 89:92 to Rt 33:36 (KsKpNL) */
833 rt |= ((slb->tmp >> 4) & 0xF) << 27;
834 } else {
835 rt = 0;
836 }
837 LOG_SLB("%s: %016" PRIx64 " %08" PRIx32 " => %d "
838 ADDRX "\n", __func__, slb->tmp64, slb->tmp, slb_nr, rt);
839
840 return rt;
841 }
842
843 void ppc_store_slb (CPUPPCState *env, target_ulong rb, target_ulong rs)
844 {
845 ppc_slb_t *slb;
846
847 uint64_t vsid;
848 uint64_t esid;
849 int flags, valid, slb_nr;
850
851 vsid = rs >> 12;
852 flags = ((rs >> 8) & 0xf);
853
854 esid = rb >> 28;
855 valid = (rb & (1 << 27));
856 slb_nr = rb & 0xfff;
857
858 slb = slb_get_entry(env, slb_nr);
859 slb->tmp64 = (esid << 28) | valid | (vsid >> 24);
860 slb->tmp = (vsid << 8) | (flags << 3);
861
862 LOG_SLB("%s: %d " ADDRX " - " ADDRX " => %016" PRIx64
863 " %08" PRIx32 "\n", __func__,
864 slb_nr, rb, rs, slb->tmp64, slb->tmp);
865
866 slb_set_entry(env, slb_nr, slb);
867 }
868 #endif /* defined(TARGET_PPC64) */
869
870 /* Perform segment based translation */
871 static always_inline target_phys_addr_t get_pgaddr (target_phys_addr_t sdr1,
872 int sdr_sh,
873 target_phys_addr_t hash,
874 target_phys_addr_t mask)
875 {
876 return (sdr1 & ((target_phys_addr_t)(-1ULL) << sdr_sh)) | (hash & mask);
877 }
878
879 static always_inline int get_segment (CPUState *env, mmu_ctx_t *ctx,
880 target_ulong eaddr, int rw, int type)
881 {
882 target_phys_addr_t sdr, hash, mask, sdr_mask, htab_mask;
883 target_ulong sr, vsid, vsid_mask, pgidx, page_mask;
884 #if defined(TARGET_PPC64)
885 int attr;
886 #endif
887 int ds, vsid_sh, sdr_sh, pr, target_page_bits;
888 int ret, ret2;
889
890 pr = msr_pr;
891 #if defined(TARGET_PPC64)
892 if (env->mmu_model & POWERPC_MMU_64) {
893 LOG_MMU("Check SLBs\n");
894 ret = slb_lookup(env, eaddr, &vsid, &page_mask, &attr,
895 &target_page_bits);
896 if (ret < 0)
897 return ret;
898 ctx->key = ((attr & 0x40) && (pr != 0)) ||
899 ((attr & 0x80) && (pr == 0)) ? 1 : 0;
900 ds = 0;
901 ctx->nx = attr & 0x10 ? 1 : 0;
902 ctx->eaddr = eaddr;
903 vsid_mask = 0x00003FFFFFFFFF80ULL;
904 vsid_sh = 7;
905 sdr_sh = 18;
906 sdr_mask = 0x3FF80;
907 } else
908 #endif /* defined(TARGET_PPC64) */
909 {
910 sr = env->sr[eaddr >> 28];
911 page_mask = 0x0FFFFFFF;
912 ctx->key = (((sr & 0x20000000) && (pr != 0)) ||
913 ((sr & 0x40000000) && (pr == 0))) ? 1 : 0;
914 ds = sr & 0x80000000 ? 1 : 0;
915 ctx->nx = sr & 0x10000000 ? 1 : 0;
916 vsid = sr & 0x00FFFFFF;
917 vsid_mask = 0x01FFFFC0;
918 vsid_sh = 6;
919 sdr_sh = 16;
920 sdr_mask = 0xFFC0;
921 target_page_bits = TARGET_PAGE_BITS;
922 LOG_MMU("Check segment v=" ADDRX " %d " ADDRX
923 " nip=" ADDRX " lr=" ADDRX " ir=%d dr=%d pr=%d %d t=%d\n",
924 eaddr, (int)(eaddr >> 28), sr, env->nip,
925 env->lr, (int)msr_ir, (int)msr_dr, pr != 0 ? 1 : 0,
926 rw, type);
927 }
928 LOG_MMU("pte segment: key=%d ds %d nx %d vsid " ADDRX "\n",
929 ctx->key, ds, ctx->nx, vsid);
930 ret = -1;
931 if (!ds) {
932 /* Check if instruction fetch is allowed, if needed */
933 if (type != ACCESS_CODE || ctx->nx == 0) {
934 /* Page address translation */
935 /* Primary table address */
936 sdr = env->sdr1;
937 pgidx = (eaddr & page_mask) >> target_page_bits;
938 #if defined(TARGET_PPC64)
939 if (env->mmu_model & POWERPC_MMU_64) {
940 htab_mask = 0x0FFFFFFF >> (28 - (sdr & 0x1F));
941 /* XXX: this is false for 1 TB segments */
942 hash = ((vsid ^ pgidx) << vsid_sh) & vsid_mask;
943 } else
944 #endif
945 {
946 htab_mask = sdr & 0x000001FF;
947 hash = ((vsid ^ pgidx) << vsid_sh) & vsid_mask;
948 }
949 mask = (htab_mask << sdr_sh) | sdr_mask;
950 LOG_MMU("sdr " PADDRX " sh %d hash " PADDRX
951 " mask " PADDRX " " ADDRX "\n",
952 sdr, sdr_sh, hash, mask, page_mask);
953 ctx->pg_addr[0] = get_pgaddr(sdr, sdr_sh, hash, mask);
954 /* Secondary table address */
955 hash = (~hash) & vsid_mask;
956 LOG_MMU("sdr " PADDRX " sh %d hash " PADDRX
957 " mask " PADDRX "\n",
958 sdr, sdr_sh, hash, mask);
959 ctx->pg_addr[1] = get_pgaddr(sdr, sdr_sh, hash, mask);
960 #if defined(TARGET_PPC64)
961 if (env->mmu_model & POWERPC_MMU_64) {
962 /* Only 5 bits of the page index are used in the AVPN */
963 if (target_page_bits > 23) {
964 ctx->ptem = (vsid << 12) |
965 ((pgidx << (target_page_bits - 16)) & 0xF80);
966 } else {
967 ctx->ptem = (vsid << 12) | ((pgidx >> 4) & 0x0F80);
968 }
969 } else
970 #endif
971 {
972 ctx->ptem = (vsid << 7) | (pgidx >> 10);
973 }
974 /* Initialize real address with an invalid value */
975 ctx->raddr = (target_phys_addr_t)-1ULL;
976 if (unlikely(env->mmu_model == POWERPC_MMU_SOFT_6xx ||
977 env->mmu_model == POWERPC_MMU_SOFT_74xx)) {
978 /* Software TLB search */
979 ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type);
980 } else {
981 LOG_MMU("0 sdr1=" PADDRX " vsid=" ADDRX " "
982 "api=" ADDRX " hash=" PADDRX
983 " pg_addr=" PADDRX "\n",
984 sdr, vsid, pgidx, hash, ctx->pg_addr[0]);
985 /* Primary table lookup */
986 ret = find_pte(env, ctx, 0, rw, type, target_page_bits);
987 if (ret < 0) {
988 /* Secondary table lookup */
989 if (eaddr != 0xEFFFFFFF)
990 LOG_MMU("1 sdr1=" PADDRX " vsid=" ADDRX " "
991 "api=" ADDRX " hash=" PADDRX
992 " pg_addr=" PADDRX "\n",
993 sdr, vsid, pgidx, hash, ctx->pg_addr[1]);
994 ret2 = find_pte(env, ctx, 1, rw, type,
995 target_page_bits);
996 if (ret2 != -1)
997 ret = ret2;
998 }
999 }
1000 #if defined (DUMP_PAGE_TABLES)
1001 if (qemu_log_enabled()) {
1002 target_phys_addr_t curaddr;
1003 uint32_t a0, a1, a2, a3;
1004 qemu_log("Page table: " PADDRX " len " PADDRX "\n",
1005 sdr, mask + 0x80);
1006 for (curaddr = sdr; curaddr < (sdr + mask + 0x80);
1007 curaddr += 16) {
1008 a0 = ldl_phys(curaddr);
1009 a1 = ldl_phys(curaddr + 4);
1010 a2 = ldl_phys(curaddr + 8);
1011 a3 = ldl_phys(curaddr + 12);
1012 if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) {
1013 qemu_log(PADDRX ": %08x %08x %08x %08x\n",
1014 curaddr, a0, a1, a2, a3);
1015 }
1016 }
1017 }
1018 #endif
1019 } else {
1020 LOG_MMU("No access allowed\n");
1021 ret = -3;
1022 }
1023 } else {
1024 LOG_MMU("direct store...\n");
1025 /* Direct-store segment : absolutely *BUGGY* for now */
1026 switch (type) {
1027 case ACCESS_INT:
1028 /* Integer load/store : only access allowed */
1029 break;
1030 case ACCESS_CODE:
1031 /* No code fetch is allowed in direct-store areas */
1032 return -4;
1033 case ACCESS_FLOAT:
1034 /* Floating point load/store */
1035 return -4;
1036 case ACCESS_RES:
1037 /* lwarx, ldarx or srwcx. */
1038 return -4;
1039 case ACCESS_CACHE:
1040 /* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
1041 /* Should make the instruction do no-op.
1042 * As it already do no-op, it's quite easy :-)
1043 */
1044 ctx->raddr = eaddr;
1045 return 0;
1046 case ACCESS_EXT:
1047 /* eciwx or ecowx */
1048 return -4;
1049 default:
1050 qemu_log("ERROR: instruction should not need "
1051 "address translation\n");
1052 return -4;
1053 }
1054 if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) {
1055 ctx->raddr = eaddr;
1056 ret = 2;
1057 } else {
1058 ret = -2;
1059 }
1060 }
1061
1062 return ret;
1063 }
1064
1065 /* Generic TLB check function for embedded PowerPC implementations */
1066 static always_inline int ppcemb_tlb_check (CPUState *env, ppcemb_tlb_t *tlb,
1067 target_phys_addr_t *raddrp,
1068 target_ulong address,
1069 uint32_t pid, int ext, int i)
1070 {
1071 target_ulong mask;
1072
1073 /* Check valid flag */
1074 if (!(tlb->prot & PAGE_VALID)) {
1075 qemu_log("%s: TLB %d not valid\n", __func__, i);
1076 return -1;
1077 }
1078 mask = ~(tlb->size - 1);
1079 LOG_SWTLB("%s: TLB %d address " ADDRX " PID %u <=> " ADDRX
1080 " " ADDRX " %u\n",
1081 __func__, i, address, pid, tlb->EPN, mask, (uint32_t)tlb->PID);
1082 /* Check PID */
1083 if (tlb->PID != 0 && tlb->PID != pid)
1084 return -1;
1085 /* Check effective address */
1086 if ((address & mask) != tlb->EPN)
1087 return -1;
1088 *raddrp = (tlb->RPN & mask) | (address & ~mask);
1089 #if (TARGET_PHYS_ADDR_BITS >= 36)
1090 if (ext) {
1091 /* Extend the physical address to 36 bits */
1092 *raddrp |= (target_phys_addr_t)(tlb->RPN & 0xF) << 32;
1093 }
1094 #endif
1095
1096 return 0;
1097 }
1098
1099 /* Generic TLB search function for PowerPC embedded implementations */
1100 int ppcemb_tlb_search (CPUPPCState *env, target_ulong address, uint32_t pid)
1101 {
1102 ppcemb_tlb_t *tlb;
1103 target_phys_addr_t raddr;
1104 int i, ret;
1105
1106 /* Default return value is no match */
1107 ret = -1;
1108 for (i = 0; i < env->nb_tlb; i++) {
1109 tlb = &env->tlb[i].tlbe;
1110 if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) {
1111 ret = i;
1112 break;
1113 }
1114 }
1115
1116 return ret;
1117 }
1118
1119 /* Helpers specific to PowerPC 40x implementations */
1120 static always_inline void ppc4xx_tlb_invalidate_all (CPUState *env)
1121 {
1122 ppcemb_tlb_t *tlb;
1123 int i;
1124
1125 for (i = 0; i < env->nb_tlb; i++) {
1126 tlb = &env->tlb[i].tlbe;
1127 tlb->prot &= ~PAGE_VALID;
1128 }
1129 tlb_flush(env, 1);
1130 }
1131
1132 static always_inline void ppc4xx_tlb_invalidate_virt (CPUState *env,
1133 target_ulong eaddr,
1134 uint32_t pid)
1135 {
1136 #if !defined(FLUSH_ALL_TLBS)
1137 ppcemb_tlb_t *tlb;
1138 target_phys_addr_t raddr;
1139 target_ulong page, end;
1140 int i;
1141
1142 for (i = 0; i < env->nb_tlb; i++) {
1143 tlb = &env->tlb[i].tlbe;
1144 if (ppcemb_tlb_check(env, tlb, &raddr, eaddr, pid, 0, i) == 0) {
1145 end = tlb->EPN + tlb->size;
1146 for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE)
1147 tlb_flush_page(env, page);
1148 tlb->prot &= ~PAGE_VALID;
1149 break;
1150 }
1151 }
1152 #else
1153 ppc4xx_tlb_invalidate_all(env);
1154 #endif
1155 }
1156
1157 static int mmu40x_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
1158 target_ulong address, int rw, int access_type)
1159 {
1160 ppcemb_tlb_t *tlb;
1161 target_phys_addr_t raddr;
1162 int i, ret, zsel, zpr, pr;
1163
1164 ret = -1;
1165 raddr = (target_phys_addr_t)-1ULL;
1166 pr = msr_pr;
1167 for (i = 0; i < env->nb_tlb; i++) {
1168 tlb = &env->tlb[i].tlbe;
1169 if (ppcemb_tlb_check(env, tlb, &raddr, address,
1170 env->spr[SPR_40x_PID], 0, i) < 0)
1171 continue;
1172 zsel = (tlb->attr >> 4) & 0xF;
1173 zpr = (env->spr[SPR_40x_ZPR] >> (28 - (2 * zsel))) & 0x3;
1174 LOG_SWTLB("%s: TLB %d zsel %d zpr %d rw %d attr %08x\n",
1175 __func__, i, zsel, zpr, rw, tlb->attr);
1176 /* Check execute enable bit */
1177 switch (zpr) {
1178 case 0x2:
1179 if (pr != 0)
1180 goto check_perms;
1181 /* No break here */
1182 case 0x3:
1183 /* All accesses granted */
1184 ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
1185 ret = 0;
1186 break;
1187 case 0x0:
1188 if (pr != 0) {
1189 ctx->prot = 0;
1190 ret = -2;
1191 break;
1192 }
1193 /* No break here */
1194 case 0x1:
1195 check_perms:
1196 /* Check from TLB entry */
1197 /* XXX: there is a problem here or in the TLB fill code... */
1198 ctx->prot = tlb->prot;
1199 ctx->prot |= PAGE_EXEC;
1200 ret = check_prot(ctx->prot, rw, access_type);
1201 break;
1202 }
1203 if (ret >= 0) {
1204 ctx->raddr = raddr;
1205 LOG_SWTLB("%s: access granted " ADDRX " => " PADDRX
1206 " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
1207 ret);
1208 return 0;
1209 }
1210 }
1211 LOG_SWTLB("%s: access refused " ADDRX " => " PADDRX
1212 " %d %d\n", __func__, address, raddr, ctx->prot,
1213 ret);
1214
1215 return ret;
1216 }
1217
1218 void store_40x_sler (CPUPPCState *env, uint32_t val)
1219 {
1220 /* XXX: TO BE FIXED */
1221 if (val != 0x00000000) {
1222 cpu_abort(env, "Little-endian regions are not supported by now\n");
1223 }
1224 env->spr[SPR_405_SLER] = val;
1225 }
1226
1227 static int mmubooke_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
1228 target_ulong address, int rw,
1229 int access_type)
1230 {
1231 ppcemb_tlb_t *tlb;
1232 target_phys_addr_t raddr;
1233 int i, prot, ret;
1234
1235 ret = -1;
1236 raddr = (target_phys_addr_t)-1ULL;
1237 for (i = 0; i < env->nb_tlb; i++) {
1238 tlb = &env->tlb[i].tlbe;
1239 if (ppcemb_tlb_check(env, tlb, &raddr, address,
1240 env->spr[SPR_BOOKE_PID], 1, i) < 0)
1241 continue;
1242 if (msr_pr != 0)
1243 prot = tlb->prot & 0xF;
1244 else
1245 prot = (tlb->prot >> 4) & 0xF;
1246 /* Check the address space */
1247 if (access_type == ACCESS_CODE) {
1248 if (msr_ir != (tlb->attr & 1))
1249 continue;
1250 ctx->prot = prot;
1251 if (prot & PAGE_EXEC) {
1252 ret = 0;
1253 break;
1254 }
1255 ret = -3;
1256 } else {
1257 if (msr_dr != (tlb->attr & 1))
1258 continue;
1259 ctx->prot = prot;
1260 if ((!rw && prot & PAGE_READ) || (rw && (prot & PAGE_WRITE))) {
1261 ret = 0;
1262 break;
1263 }
1264 ret = -2;
1265 }
1266 }
1267 if (ret >= 0)
1268 ctx->raddr = raddr;
1269
1270 return ret;
1271 }
1272
1273 static always_inline int check_physical (CPUState *env, mmu_ctx_t *ctx,
1274 target_ulong eaddr, int rw)
1275 {
1276 int in_plb, ret;
1277
1278 ctx->raddr = eaddr;
1279 ctx->prot = PAGE_READ | PAGE_EXEC;
1280 ret = 0;
1281 switch (env->mmu_model) {
1282 case POWERPC_MMU_32B:
1283 case POWERPC_MMU_601:
1284 case POWERPC_MMU_SOFT_6xx:
1285 case POWERPC_MMU_SOFT_74xx:
1286 case POWERPC_MMU_SOFT_4xx:
1287 case POWERPC_MMU_REAL:
1288 case POWERPC_MMU_BOOKE:
1289 ctx->prot |= PAGE_WRITE;
1290 break;
1291 #if defined(TARGET_PPC64)
1292 case POWERPC_MMU_620:
1293 case POWERPC_MMU_64B:
1294 /* Real address are 60 bits long */
1295 ctx->raddr &= 0x0FFFFFFFFFFFFFFFULL;
1296 ctx->prot |= PAGE_WRITE;
1297 break;
1298 #endif
1299 case POWERPC_MMU_SOFT_4xx_Z:
1300 if (unlikely(msr_pe != 0)) {
1301 /* 403 family add some particular protections,
1302 * using PBL/PBU registers for accesses with no translation.
1303 */
1304 in_plb =
1305 /* Check PLB validity */
1306 (env->pb[0] < env->pb[1] &&
1307 /* and address in plb area */
1308 eaddr >= env->pb[0] && eaddr < env->pb[1]) ||
1309 (env->pb[2] < env->pb[3] &&
1310 eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0;
1311 if (in_plb ^ msr_px) {
1312 /* Access in protected area */
1313 if (rw == 1) {
1314 /* Access is not allowed */
1315 ret = -2;
1316 }
1317 } else {
1318 /* Read-write access is allowed */
1319 ctx->prot |= PAGE_WRITE;
1320 }
1321 }
1322 break;
1323 case POWERPC_MMU_MPC8xx:
1324 /* XXX: TODO */
1325 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1326 break;
1327 case POWERPC_MMU_BOOKE_FSL:
1328 /* XXX: TODO */
1329 cpu_abort(env, "BookE FSL MMU model not implemented\n");
1330 break;
1331 default:
1332 cpu_abort(env, "Unknown or invalid MMU model\n");
1333 return -1;
1334 }
1335
1336 return ret;
1337 }
1338
1339 int get_physical_address (CPUState *env, mmu_ctx_t *ctx, target_ulong eaddr,
1340 int rw, int access_type)
1341 {
1342 int ret;
1343
1344 #if 0
1345 qemu_log("%s\n", __func__);
1346 #endif
1347 if ((access_type == ACCESS_CODE && msr_ir == 0) ||
1348 (access_type != ACCESS_CODE && msr_dr == 0)) {
1349 /* No address translation */
1350 ret = check_physical(env, ctx, eaddr, rw);
1351 } else {
1352 ret = -1;
1353 switch (env->mmu_model) {
1354 case POWERPC_MMU_32B:
1355 case POWERPC_MMU_601:
1356 case POWERPC_MMU_SOFT_6xx:
1357 case POWERPC_MMU_SOFT_74xx:
1358 /* Try to find a BAT */
1359 if (env->nb_BATs != 0)
1360 ret = get_bat(env, ctx, eaddr, rw, access_type);
1361 #if defined(TARGET_PPC64)
1362 case POWERPC_MMU_620:
1363 case POWERPC_MMU_64B:
1364 #endif
1365 if (ret < 0) {
1366 /* We didn't match any BAT entry or don't have BATs */
1367 ret = get_segment(env, ctx, eaddr, rw, access_type);
1368 }
1369 break;
1370 case POWERPC_MMU_SOFT_4xx:
1371 case POWERPC_MMU_SOFT_4xx_Z:
1372 ret = mmu40x_get_physical_address(env, ctx, eaddr,
1373 rw, access_type);
1374 break;
1375 case POWERPC_MMU_BOOKE:
1376 ret = mmubooke_get_physical_address(env, ctx, eaddr,
1377 rw, access_type);
1378 break;
1379 case POWERPC_MMU_MPC8xx:
1380 /* XXX: TODO */
1381 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1382 break;
1383 case POWERPC_MMU_BOOKE_FSL:
1384 /* XXX: TODO */
1385 cpu_abort(env, "BookE FSL MMU model not implemented\n");
1386 return -1;
1387 case POWERPC_MMU_REAL:
1388 cpu_abort(env, "PowerPC in real mode do not do any translation\n");
1389 return -1;
1390 default:
1391 cpu_abort(env, "Unknown or invalid MMU model\n");
1392 return -1;
1393 }
1394 }
1395 #if 0
1396 qemu_log("%s address " ADDRX " => %d " PADDRX "\n",
1397 __func__, eaddr, ret, ctx->raddr);
1398 #endif
1399
1400 return ret;
1401 }
1402
1403 target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
1404 {
1405 mmu_ctx_t ctx;
1406
1407 if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT) != 0))
1408 return -1;
1409
1410 return ctx.raddr & TARGET_PAGE_MASK;
1411 }
1412
1413 /* Perform address translation */
1414 int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
1415 int mmu_idx, int is_softmmu)
1416 {
1417 mmu_ctx_t ctx;
1418 int access_type;
1419 int ret = 0;
1420
1421 if (rw == 2) {
1422 /* code access */
1423 rw = 0;
1424 access_type = ACCESS_CODE;
1425 } else {
1426 /* data access */
1427 access_type = env->access_type;
1428 }
1429 ret = get_physical_address(env, &ctx, address, rw, access_type);
1430 if (ret == 0) {
1431 ret = tlb_set_page_exec(env, address & TARGET_PAGE_MASK,
1432 ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
1433 mmu_idx, is_softmmu);
1434 } else if (ret < 0) {
1435 LOG_MMU_STATE(env);
1436 if (access_type == ACCESS_CODE) {
1437 switch (ret) {
1438 case -1:
1439 /* No matches in page tables or TLB */
1440 switch (env->mmu_model) {
1441 case POWERPC_MMU_SOFT_6xx:
1442 env->exception_index = POWERPC_EXCP_IFTLB;
1443 env->error_code = 1 << 18;
1444 env->spr[SPR_IMISS] = address;
1445 env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
1446 goto tlb_miss;
1447 case POWERPC_MMU_SOFT_74xx:
1448 env->exception_index = POWERPC_EXCP_IFTLB;
1449 goto tlb_miss_74xx;
1450 case POWERPC_MMU_SOFT_4xx:
1451 case POWERPC_MMU_SOFT_4xx_Z:
1452 env->exception_index = POWERPC_EXCP_ITLB;
1453 env->error_code = 0;
1454 env->spr[SPR_40x_DEAR] = address;
1455 env->spr[SPR_40x_ESR] = 0x00000000;
1456 break;
1457 case POWERPC_MMU_32B:
1458 case POWERPC_MMU_601:
1459 #if defined(TARGET_PPC64)
1460 case POWERPC_MMU_620:
1461 case POWERPC_MMU_64B:
1462 #endif
1463 env->exception_index = POWERPC_EXCP_ISI;
1464 env->error_code = 0x40000000;
1465 break;
1466 case POWERPC_MMU_BOOKE:
1467 /* XXX: TODO */
1468 cpu_abort(env, "BookE MMU model is not implemented\n");
1469 return -1;
1470 case POWERPC_MMU_BOOKE_FSL:
1471 /* XXX: TODO */
1472 cpu_abort(env, "BookE FSL MMU model is not implemented\n");
1473 return -1;
1474 case POWERPC_MMU_MPC8xx:
1475 /* XXX: TODO */
1476 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1477 break;
1478 case POWERPC_MMU_REAL:
1479 cpu_abort(env, "PowerPC in real mode should never raise "
1480 "any MMU exceptions\n");
1481 return -1;
1482 default:
1483 cpu_abort(env, "Unknown or invalid MMU model\n");
1484 return -1;
1485 }
1486 break;
1487 case -2:
1488 /* Access rights violation */
1489 env->exception_index = POWERPC_EXCP_ISI;
1490 env->error_code = 0x08000000;
1491 break;
1492 case -3:
1493 /* No execute protection violation */
1494 env->exception_index = POWERPC_EXCP_ISI;
1495 env->error_code = 0x10000000;
1496 break;
1497 case -4:
1498 /* Direct store exception */
1499 /* No code fetch is allowed in direct-store areas */
1500 env->exception_index = POWERPC_EXCP_ISI;
1501 env->error_code = 0x10000000;
1502 break;
1503 #if defined(TARGET_PPC64)
1504 case -5:
1505 /* No match in segment table */
1506 if (env->mmu_model == POWERPC_MMU_620) {
1507 env->exception_index = POWERPC_EXCP_ISI;
1508 /* XXX: this might be incorrect */
1509 env->error_code = 0x40000000;
1510 } else {
1511 env->exception_index = POWERPC_EXCP_ISEG;
1512 env->error_code = 0;
1513 }
1514 break;
1515 #endif
1516 }
1517 } else {
1518 switch (ret) {
1519 case -1:
1520 /* No matches in page tables or TLB */
1521 switch (env->mmu_model) {
1522 case POWERPC_MMU_SOFT_6xx:
1523 if (rw == 1) {
1524 env->exception_index = POWERPC_EXCP_DSTLB;
1525 env->error_code = 1 << 16;
1526 } else {
1527 env->exception_index = POWERPC_EXCP_DLTLB;
1528 env->error_code = 0;
1529 }
1530 env->spr[SPR_DMISS] = address;
1531 env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
1532 tlb_miss:
1533 env->error_code |= ctx.key << 19;
1534 env->spr[SPR_HASH1] = ctx.pg_addr[0];
1535 env->spr[SPR_HASH2] = ctx.pg_addr[1];
1536 break;
1537 case POWERPC_MMU_SOFT_74xx:
1538 if (rw == 1) {
1539 env->exception_index = POWERPC_EXCP_DSTLB;
1540 } else {
1541 env->exception_index = POWERPC_EXCP_DLTLB;
1542 }
1543 tlb_miss_74xx:
1544 /* Implement LRU algorithm */
1545 env->error_code = ctx.key << 19;
1546 env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) |
1547 ((env->last_way + 1) & (env->nb_ways - 1));
1548 env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem;
1549 break;
1550 case POWERPC_MMU_SOFT_4xx:
1551 case POWERPC_MMU_SOFT_4xx_Z:
1552 env->exception_index = POWERPC_EXCP_DTLB;
1553 env->error_code = 0;
1554 env->spr[SPR_40x_DEAR] = address;
1555 if (rw)
1556 env->spr[SPR_40x_ESR] = 0x00800000;
1557 else
1558 env->spr[SPR_40x_ESR] = 0x00000000;
1559 break;
1560 case POWERPC_MMU_32B:
1561 case POWERPC_MMU_601:
1562 #if defined(TARGET_PPC64)
1563 case POWERPC_MMU_620:
1564 case POWERPC_MMU_64B:
1565 #endif
1566 env->exception_index = POWERPC_EXCP_DSI;
1567 env->error_code = 0;
1568 env->spr[SPR_DAR] = address;
1569 if (rw == 1)
1570 env->spr[SPR_DSISR] = 0x42000000;
1571 else
1572 env->spr[SPR_DSISR] = 0x40000000;
1573 break;
1574 case POWERPC_MMU_MPC8xx:
1575 /* XXX: TODO */
1576 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1577 break;
1578 case POWERPC_MMU_BOOKE:
1579 /* XXX: TODO */
1580 cpu_abort(env, "BookE MMU model is not implemented\n");
1581 return -1;
1582 case POWERPC_MMU_BOOKE_FSL:
1583 /* XXX: TODO */
1584 cpu_abort(env, "BookE FSL MMU model is not implemented\n");
1585 return -1;
1586 case POWERPC_MMU_REAL:
1587 cpu_abort(env, "PowerPC in real mode should never raise "
1588 "any MMU exceptions\n");
1589 return -1;
1590 default:
1591 cpu_abort(env, "Unknown or invalid MMU model\n");
1592 return -1;
1593 }
1594 break;
1595 case -2:
1596 /* Access rights violation */
1597 env->exception_index = POWERPC_EXCP_DSI;
1598 env->error_code = 0;
1599 env->spr[SPR_DAR] = address;
1600 if (rw == 1)
1601 env->spr[SPR_DSISR] = 0x0A000000;
1602 else
1603 env->spr[SPR_DSISR] = 0x08000000;
1604 break;
1605 case -4:
1606 /* Direct store exception */
1607 switch (access_type) {
1608 case ACCESS_FLOAT:
1609 /* Floating point load/store */
1610 env->exception_index = POWERPC_EXCP_ALIGN;
1611 env->error_code = POWERPC_EXCP_ALIGN_FP;
1612 env->spr[SPR_DAR] = address;
1613 break;
1614 case ACCESS_RES:
1615 /* lwarx, ldarx or stwcx. */
1616 env->exception_index = POWERPC_EXCP_DSI;
1617 env->error_code = 0;
1618 env->spr[SPR_DAR] = address;
1619 if (rw == 1)
1620 env->spr[SPR_DSISR] = 0x06000000;
1621 else
1622 env->spr[SPR_DSISR] = 0x04000000;
1623 break;
1624 case ACCESS_EXT:
1625 /* eciwx or ecowx */
1626 env->exception_index = POWERPC_EXCP_DSI;
1627 env->error_code = 0;
1628 env->spr[SPR_DAR] = address;
1629 if (rw == 1)
1630 env->spr[SPR_DSISR] = 0x06100000;
1631 else
1632 env->spr[SPR_DSISR] = 0x04100000;
1633 break;
1634 default:
1635 printf("DSI: invalid exception (%d)\n", ret);
1636 env->exception_index = POWERPC_EXCP_PROGRAM;
1637 env->error_code =
1638 POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
1639 env->spr[SPR_DAR] = address;
1640 break;
1641 }
1642 break;
1643 #if defined(TARGET_PPC64)
1644 case -5:
1645 /* No match in segment table */
1646 if (env->mmu_model == POWERPC_MMU_620) {
1647 env->exception_index = POWERPC_EXCP_DSI;
1648 env->error_code = 0;
1649 env->spr[SPR_DAR] = address;
1650 /* XXX: this might be incorrect */
1651 if (rw == 1)
1652 env->spr[SPR_DSISR] = 0x42000000;
1653 else
1654 env->spr[SPR_DSISR] = 0x40000000;
1655 } else {
1656 env->exception_index = POWERPC_EXCP_DSEG;
1657 env->error_code = 0;
1658 env->spr[SPR_DAR] = address;
1659 }
1660 break;
1661 #endif
1662 }
1663 }
1664 #if 0
1665 printf("%s: set exception to %d %02x\n", __func__,
1666 env->exception, env->error_code);
1667 #endif
1668 ret = 1;
1669 }
1670
1671 return ret;
1672 }
1673
1674 /*****************************************************************************/
1675 /* BATs management */
1676 #if !defined(FLUSH_ALL_TLBS)
1677 static always_inline void do_invalidate_BAT (CPUPPCState *env,
1678 target_ulong BATu,
1679 target_ulong mask)
1680 {
1681 target_ulong base, end, page;
1682
1683 base = BATu & ~0x0001FFFF;
1684 end = base + mask + 0x00020000;
1685 LOG_BATS("Flush BAT from " ADDRX " to " ADDRX " (" ADDRX ")\n",
1686 base, end, mask);
1687 for (page = base; page != end; page += TARGET_PAGE_SIZE)
1688 tlb_flush_page(env, page);
1689 LOG_BATS("Flush done\n");
1690 }
1691 #endif
1692
1693 static always_inline void dump_store_bat (CPUPPCState *env, char ID,
1694 int ul, int nr, target_ulong value)
1695 {
1696 LOG_BATS("Set %cBAT%d%c to " ADDRX " (" ADDRX ")\n",
1697 ID, nr, ul == 0 ? 'u' : 'l', value, env->nip);
1698 }
1699
1700 void ppc_store_ibatu (CPUPPCState *env, int nr, target_ulong value)
1701 {
1702 target_ulong mask;
1703
1704 dump_store_bat(env, 'I', 0, nr, value);
1705 if (env->IBAT[0][nr] != value) {
1706 mask = (value << 15) & 0x0FFE0000UL;
1707 #if !defined(FLUSH_ALL_TLBS)
1708 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1709 #endif
1710 /* When storing valid upper BAT, mask BEPI and BRPN
1711 * and invalidate all TLBs covered by this BAT
1712 */
1713 mask = (value << 15) & 0x0FFE0000UL;
1714 env->IBAT[0][nr] = (value & 0x00001FFFUL) |
1715 (value & ~0x0001FFFFUL & ~mask);
1716 env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) |
1717 (env->IBAT[1][nr] & ~0x0001FFFF & ~mask);
1718 #if !defined(FLUSH_ALL_TLBS)
1719 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1720 #else
1721 tlb_flush(env, 1);
1722 #endif
1723 }
1724 }
1725
1726 void ppc_store_ibatl (CPUPPCState *env, int nr, target_ulong value)
1727 {
1728 dump_store_bat(env, 'I', 1, nr, value);
1729 env->IBAT[1][nr] = value;
1730 }
1731
1732 void ppc_store_dbatu (CPUPPCState *env, int nr, target_ulong value)
1733 {
1734 target_ulong mask;
1735
1736 dump_store_bat(env, 'D', 0, nr, value);
1737 if (env->DBAT[0][nr] != value) {
1738 /* When storing valid upper BAT, mask BEPI and BRPN
1739 * and invalidate all TLBs covered by this BAT
1740 */
1741 mask = (value << 15) & 0x0FFE0000UL;
1742 #if !defined(FLUSH_ALL_TLBS)
1743 do_invalidate_BAT(env, env->DBAT[0][nr], mask);
1744 #endif
1745 mask = (value << 15) & 0x0FFE0000UL;
1746 env->DBAT[0][nr] = (value & 0x00001FFFUL) |
1747 (value & ~0x0001FFFFUL & ~mask);
1748 env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) |
1749 (env->DBAT[1][nr] & ~0x0001FFFF & ~mask);
1750 #if !defined(FLUSH_ALL_TLBS)
1751 do_invalidate_BAT(env, env->DBAT[0][nr], mask);
1752 #else
1753 tlb_flush(env, 1);
1754 #endif
1755 }
1756 }
1757
1758 void ppc_store_dbatl (CPUPPCState *env, int nr, target_ulong value)
1759 {
1760 dump_store_bat(env, 'D', 1, nr, value);
1761 env->DBAT[1][nr] = value;
1762 }
1763
1764 void ppc_store_ibatu_601 (CPUPPCState *env, int nr, target_ulong value)
1765 {
1766 target_ulong mask;
1767 int do_inval;
1768
1769 dump_store_bat(env, 'I', 0, nr, value);
1770 if (env->IBAT[0][nr] != value) {
1771 do_inval = 0;
1772 mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
1773 if (env->IBAT[1][nr] & 0x40) {
1774 /* Invalidate BAT only if it is valid */
1775 #if !defined(FLUSH_ALL_TLBS)
1776 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1777 #else
1778 do_inval = 1;
1779 #endif
1780 }
1781 /* When storing valid upper BAT, mask BEPI and BRPN
1782 * and invalidate all TLBs covered by this BAT
1783 */
1784 env->IBAT[0][nr] = (value & 0x00001FFFUL) |
1785 (value & ~0x0001FFFFUL & ~mask);
1786 env->DBAT[0][nr] = env->IBAT[0][nr];
1787 if (env->IBAT[1][nr] & 0x40) {
1788 #if !defined(FLUSH_ALL_TLBS)
1789 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1790 #else
1791 do_inval = 1;
1792 #endif
1793 }
1794 #if defined(FLUSH_ALL_TLBS)
1795 if (do_inval)
1796 tlb_flush(env, 1);
1797 #endif
1798 }
1799 }
1800
1801 void ppc_store_ibatl_601 (CPUPPCState *env, int nr, target_ulong value)
1802 {
1803 target_ulong mask;
1804 int do_inval;
1805
1806 dump_store_bat(env, 'I', 1, nr, value);
1807 if (env->IBAT[1][nr] != value) {
1808 do_inval = 0;
1809 if (env->IBAT[1][nr] & 0x40) {
1810 #if !defined(FLUSH_ALL_TLBS)
1811 mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
1812 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1813 #else
1814 do_inval = 1;
1815 #endif
1816 }
1817 if (value & 0x40) {
1818 #if !defined(FLUSH_ALL_TLBS)
1819 mask = (value << 17) & 0x0FFE0000UL;
1820 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1821 #else
1822 do_inval = 1;
1823 #endif
1824 }
1825 env->IBAT[1][nr] = value;
1826 env->DBAT[1][nr] = value;
1827 #if defined(FLUSH_ALL_TLBS)
1828 if (do_inval)
1829 tlb_flush(env, 1);
1830 #endif
1831 }
1832 }
1833
1834 /*****************************************************************************/
1835 /* TLB management */
1836 void ppc_tlb_invalidate_all (CPUPPCState *env)
1837 {
1838 switch (env->mmu_model) {
1839 case POWERPC_MMU_SOFT_6xx:
1840 case POWERPC_MMU_SOFT_74xx:
1841 ppc6xx_tlb_invalidate_all(env);
1842 break;
1843 case POWERPC_MMU_SOFT_4xx:
1844 case POWERPC_MMU_SOFT_4xx_Z:
1845 ppc4xx_tlb_invalidate_all(env);
1846 break;
1847 case POWERPC_MMU_REAL:
1848 cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
1849 break;
1850 case POWERPC_MMU_MPC8xx:
1851 /* XXX: TODO */
1852 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1853 break;
1854 case POWERPC_MMU_BOOKE:
1855 /* XXX: TODO */
1856 cpu_abort(env, "BookE MMU model is not implemented\n");
1857 break;
1858 case POWERPC_MMU_BOOKE_FSL:
1859 /* XXX: TODO */
1860 if (!kvm_enabled())
1861 cpu_abort(env, "BookE MMU model is not implemented\n");
1862 break;
1863 case POWERPC_MMU_32B:
1864 case POWERPC_MMU_601:
1865 #if defined(TARGET_PPC64)
1866 case POWERPC_MMU_620:
1867 case POWERPC_MMU_64B:
1868 #endif /* defined(TARGET_PPC64) */
1869 tlb_flush(env, 1);
1870 break;
1871 default:
1872 /* XXX: TODO */
1873 cpu_abort(env, "Unknown MMU model\n");
1874 break;
1875 }
1876 }
1877
1878 void ppc_tlb_invalidate_one (CPUPPCState *env, target_ulong addr)
1879 {
1880 #if !defined(FLUSH_ALL_TLBS)
1881 addr &= TARGET_PAGE_MASK;
1882 switch (env->mmu_model) {
1883 case POWERPC_MMU_SOFT_6xx:
1884 case POWERPC_MMU_SOFT_74xx:
1885 ppc6xx_tlb_invalidate_virt(env, addr, 0);
1886 if (env->id_tlbs == 1)
1887 ppc6xx_tlb_invalidate_virt(env, addr, 1);
1888 break;
1889 case POWERPC_MMU_SOFT_4xx:
1890 case POWERPC_MMU_SOFT_4xx_Z:
1891 ppc4xx_tlb_invalidate_virt(env, addr, env->spr[SPR_40x_PID]);
1892 break;
1893 case POWERPC_MMU_REAL:
1894 cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
1895 break;
1896 case POWERPC_MMU_MPC8xx:
1897 /* XXX: TODO */
1898 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1899 break;
1900 case POWERPC_MMU_BOOKE:
1901 /* XXX: TODO */
1902 cpu_abort(env, "BookE MMU model is not implemented\n");
1903 break;
1904 case POWERPC_MMU_BOOKE_FSL:
1905 /* XXX: TODO */
1906 cpu_abort(env, "BookE FSL MMU model is not implemented\n");
1907 break;
1908 case POWERPC_MMU_32B:
1909 case POWERPC_MMU_601:
1910 /* tlbie invalidate TLBs for all segments */
1911 addr &= ~((target_ulong)-1ULL << 28);
1912 /* XXX: this case should be optimized,
1913 * giving a mask to tlb_flush_page
1914 */
1915 tlb_flush_page(env, addr | (0x0 << 28));
1916 tlb_flush_page(env, addr | (0x1 << 28));
1917 tlb_flush_page(env, addr | (0x2 << 28));
1918 tlb_flush_page(env, addr | (0x3 << 28));
1919 tlb_flush_page(env, addr | (0x4 << 28));
1920 tlb_flush_page(env, addr | (0x5 << 28));
1921 tlb_flush_page(env, addr | (0x6 << 28));
1922 tlb_flush_page(env, addr | (0x7 << 28));
1923 tlb_flush_page(env, addr | (0x8 << 28));
1924 tlb_flush_page(env, addr | (0x9 << 28));
1925 tlb_flush_page(env, addr | (0xA << 28));
1926 tlb_flush_page(env, addr | (0xB << 28));
1927 tlb_flush_page(env, addr | (0xC << 28));
1928 tlb_flush_page(env, addr | (0xD << 28));
1929 tlb_flush_page(env, addr | (0xE << 28));
1930 tlb_flush_page(env, addr | (0xF << 28));
1931 break;
1932 #if defined(TARGET_PPC64)
1933 case POWERPC_MMU_620:
1934 case POWERPC_MMU_64B:
1935 /* tlbie invalidate TLBs for all segments */
1936 /* XXX: given the fact that there are too many segments to invalidate,
1937 * and we still don't have a tlb_flush_mask(env, n, mask) in Qemu,
1938 * we just invalidate all TLBs
1939 */
1940 tlb_flush(env, 1);
1941 break;
1942 #endif /* defined(TARGET_PPC64) */
1943 default:
1944 /* XXX: TODO */
1945 cpu_abort(env, "Unknown MMU model\n");
1946 break;
1947 }
1948 #else
1949 ppc_tlb_invalidate_all(env);
1950 #endif
1951 }
1952
1953 /*****************************************************************************/
1954 /* Special registers manipulation */
1955 #if defined(TARGET_PPC64)
1956 void ppc_store_asr (CPUPPCState *env, target_ulong value)
1957 {
1958 if (env->asr != value) {
1959 env->asr = value;
1960 tlb_flush(env, 1);
1961 }
1962 }
1963 #endif
1964
1965 void ppc_store_sdr1 (CPUPPCState *env, target_ulong value)
1966 {
1967 LOG_MMU("%s: " ADDRX "\n", __func__, value);
1968 if (env->sdr1 != value) {
1969 /* XXX: for PowerPC 64, should check that the HTABSIZE value
1970 * is <= 28
1971 */
1972 env->sdr1 = value;
1973 tlb_flush(env, 1);
1974 }
1975 }
1976
1977 #if defined(TARGET_PPC64)
1978 target_ulong ppc_load_sr (CPUPPCState *env, int slb_nr)
1979 {
1980 // XXX
1981 return 0;
1982 }
1983 #endif
1984
1985 void ppc_store_sr (CPUPPCState *env, int srnum, target_ulong value)
1986 {
1987 LOG_MMU("%s: reg=%d " ADDRX " " ADDRX "\n",
1988 __func__, srnum, value, env->sr[srnum]);
1989 #if defined(TARGET_PPC64)
1990 if (env->mmu_model & POWERPC_MMU_64) {
1991 uint64_t rb = 0, rs = 0;
1992
1993 /* ESID = srnum */
1994 rb |= ((uint32_t)srnum & 0xf) << 28;
1995 /* Set the valid bit */
1996 rb |= 1 << 27;
1997 /* Index = ESID */
1998 rb |= (uint32_t)srnum;
1999
2000 /* VSID = VSID */
2001 rs |= (value & 0xfffffff) << 12;
2002 /* flags = flags */
2003 rs |= ((value >> 27) & 0xf) << 9;
2004
2005 ppc_store_slb(env, rb, rs);
2006 } else
2007 #endif
2008 if (env->sr[srnum] != value) {
2009 env->sr[srnum] = value;
2010 /* Invalidating 256MB of virtual memory in 4kB pages is way longer than
2011 flusing the whole TLB. */
2012 #if !defined(FLUSH_ALL_TLBS) && 0
2013 {
2014 target_ulong page, end;
2015 /* Invalidate 256 MB of virtual memory */
2016 page = (16 << 20) * srnum;
2017 end = page + (16 << 20);
2018 for (; page != end; page += TARGET_PAGE_SIZE)
2019 tlb_flush_page(env, page);
2020 }
2021 #else
2022 tlb_flush(env, 1);
2023 #endif
2024 }
2025 }
2026 #endif /* !defined (CONFIG_USER_ONLY) */
2027
2028 /* GDBstub can read and write MSR... */
2029 void ppc_store_msr (CPUPPCState *env, target_ulong value)
2030 {
2031 hreg_store_msr(env, value, 0);
2032 }
2033
2034 /*****************************************************************************/
2035 /* Exception processing */
2036 #if defined (CONFIG_USER_ONLY)
2037 void do_interrupt (CPUState *env)
2038 {
2039 env->exception_index = POWERPC_EXCP_NONE;
2040 env->error_code = 0;
2041 }
2042
2043 void ppc_hw_interrupt (CPUState *env)
2044 {
2045 env->exception_index = POWERPC_EXCP_NONE;
2046 env->error_code = 0;
2047 }
2048 #else /* defined (CONFIG_USER_ONLY) */
2049 static always_inline void dump_syscall (CPUState *env)
2050 {
2051 qemu_log_mask(CPU_LOG_INT, "syscall r0=" REGX " r3=" REGX " r4=" REGX
2052 " r5=" REGX " r6=" REGX " nip=" ADDRX "\n",
2053 ppc_dump_gpr(env, 0), ppc_dump_gpr(env, 3), ppc_dump_gpr(env, 4),
2054 ppc_dump_gpr(env, 5), ppc_dump_gpr(env, 6), env->nip);
2055 }
2056
2057 /* Note that this function should be greatly optimized
2058 * when called with a constant excp, from ppc_hw_interrupt
2059 */
2060 static always_inline void powerpc_excp (CPUState *env,
2061 int excp_model, int excp)
2062 {
2063 target_ulong msr, new_msr, vector;
2064 int srr0, srr1, asrr0, asrr1;
2065 int lpes0, lpes1, lev;
2066
2067 if (0) {
2068 /* XXX: find a suitable condition to enable the hypervisor mode */
2069 lpes0 = (env->spr[SPR_LPCR] >> 1) & 1;
2070 lpes1 = (env->spr[SPR_LPCR] >> 2) & 1;
2071 } else {
2072 /* Those values ensure we won't enter the hypervisor mode */
2073 lpes0 = 0;
2074 lpes1 = 1;
2075 }
2076
2077 qemu_log_mask(CPU_LOG_INT, "Raise exception at " ADDRX " => %08x (%02x)\n",
2078 env->nip, excp, env->error_code);
2079 msr = env->msr;
2080 new_msr = msr;
2081 srr0 = SPR_SRR0;
2082 srr1 = SPR_SRR1;
2083 asrr0 = -1;
2084 asrr1 = -1;
2085 msr &= ~((target_ulong)0x783F0000);
2086 switch (excp) {
2087 case POWERPC_EXCP_NONE:
2088 /* Should never happen */
2089 return;
2090 case POWERPC_EXCP_CRITICAL: /* Critical input */
2091 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2092 switch (excp_model) {
2093 case POWERPC_EXCP_40x:
2094 srr0 = SPR_40x_SRR2;
2095 srr1 = SPR_40x_SRR3;
2096 break;
2097 case POWERPC_EXCP_BOOKE:
2098 srr0 = SPR_BOOKE_CSRR0;
2099 srr1 = SPR_BOOKE_CSRR1;
2100 break;
2101 case POWERPC_EXCP_G2:
2102 break;
2103 default:
2104 goto excp_invalid;
2105 }
2106 goto store_next;
2107 case POWERPC_EXCP_MCHECK: /* Machine check exception */
2108 if (msr_me == 0) {
2109 /* Machine check exception is not enabled.
2110 * Enter checkstop state.
2111 */
2112 if (qemu_log_enabled()) {
2113 qemu_log("Machine check while not allowed. "
2114 "Entering checkstop state\n");
2115 } else {
2116 fprintf(stderr, "Machine check while not allowed. "
2117 "Entering checkstop state\n");
2118 }
2119 env->halted = 1;
2120 env->interrupt_request |= CPU_INTERRUPT_EXITTB;
2121 }
2122 new_msr &= ~((target_ulong)1 << MSR_RI);
2123 new_msr &= ~((target_ulong)1 << MSR_ME);
2124 if (0) {
2125 /* XXX: find a suitable condition to enable the hypervisor mode */
2126 new_msr |= (target_ulong)MSR_HVB;
2127 }
2128 /* XXX: should also have something loaded in DAR / DSISR */
2129 switch (excp_model) {
2130 case POWERPC_EXCP_40x:
2131 srr0 = SPR_40x_SRR2;
2132 srr1 = SPR_40x_SRR3;
2133 break;
2134 case POWERPC_EXCP_BOOKE:
2135 srr0 = SPR_BOOKE_MCSRR0;
2136 srr1 = SPR_BOOKE_MCSRR1;
2137 asrr0 = SPR_BOOKE_CSRR0;
2138 asrr1 = SPR_BOOKE_CSRR1;
2139 break;
2140 default:
2141 break;
2142 }
2143 goto store_next;
2144 case POWERPC_EXCP_DSI: /* Data storage exception */
2145 LOG_EXCP("DSI exception: DSISR=" ADDRX" DAR=" ADDRX "\n",
2146 env->spr[SPR_DSISR], env->spr[SPR_DAR]);
2147 new_msr &= ~((target_ulong)1 << MSR_RI);
2148 if (lpes1 == 0)
2149 new_msr |= (target_ulong)MSR_HVB;
2150 goto store_next;
2151 case POWERPC_EXCP_ISI: /* Instruction storage exception */
2152 LOG_EXCP("ISI exception: msr=" ADDRX ", nip=" ADDRX "\n",
2153 msr, env->nip);
2154 new_msr &= ~((target_ulong)1 << MSR_RI);
2155 if (lpes1 == 0)
2156 new_msr |= (target_ulong)MSR_HVB;
2157 msr |= env->error_code;
2158 goto store_next;
2159 case POWERPC_EXCP_EXTERNAL: /* External input */
2160 new_msr &= ~((target_ulong)1 << MSR_RI);
2161 if (lpes0 == 1)
2162 new_msr |= (target_ulong)MSR_HVB;
2163 goto store_next;
2164 case POWERPC_EXCP_ALIGN: /* Alignment exception */
2165 new_msr &= ~((target_ulong)1 << MSR_RI);
2166 if (lpes1 == 0)
2167 new_msr |= (target_ulong)MSR_HVB;
2168 /* XXX: this is false */
2169 /* Get rS/rD and rA from faulting opcode */
2170 env->spr[SPR_DSISR] |= (ldl_code((env->nip - 4)) & 0x03FF0000) >> 16;
2171 goto store_current;
2172 case POWERPC_EXCP_PROGRAM: /* Program exception */
2173 switch (env->error_code & ~0xF) {
2174 case POWERPC_EXCP_FP:
2175 if ((msr_fe0 == 0 && msr_fe1 == 0) || msr_fp == 0) {
2176 LOG_EXCP("Ignore floating point exception\n");
2177 env->exception_index = POWERPC_EXCP_NONE;
2178 env->error_code = 0;
2179 return;
2180 }
2181 new_msr &= ~((target_ulong)1 << MSR_RI);
2182 if (lpes1 == 0)
2183 new_msr |= (target_ulong)MSR_HVB;
2184 msr |= 0x00100000;
2185 if (msr_fe0 == msr_fe1)
2186 goto store_next;
2187 msr |= 0x00010000;
2188 break;
2189 case POWERPC_EXCP_INVAL:
2190 LOG_EXCP("Invalid instruction at " ADDRX "\n",
2191 env->nip);
2192 new_msr &= ~((target_ulong)1 << MSR_RI);
2193 if (lpes1 == 0)
2194 new_msr |= (target_ulong)MSR_HVB;
2195 msr |= 0x00080000;
2196 break;
2197 case POWERPC_EXCP_PRIV:
2198 new_msr &= ~((target_ulong)1 << MSR_RI);
2199 if (lpes1 == 0)
2200 new_msr |= (target_ulong)MSR_HVB;
2201 msr |= 0x00040000;
2202 break;
2203 case POWERPC_EXCP_TRAP:
2204 new_msr &= ~((target_ulong)1 << MSR_RI);
2205 if (lpes1 == 0)
2206 new_msr |= (target_ulong)MSR_HVB;
2207 msr |= 0x00020000;
2208 break;
2209 default:
2210 /* Should never occur */
2211 cpu_abort(env, "Invalid program exception %d. Aborting\n",
2212 env->error_code);
2213 break;
2214 }
2215 goto store_current;
2216 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
2217 new_msr &= ~((target_ulong)1 << MSR_RI);
2218 if (lpes1 == 0)
2219 new_msr |= (target_ulong)MSR_HVB;
2220 goto store_current;
2221 case POWERPC_EXCP_SYSCALL: /* System call exception */
2222 /* NOTE: this is a temporary hack to support graphics OSI
2223 calls from the MOL driver */
2224 /* XXX: To be removed */
2225 if (env->gpr[3] == 0x113724fa && env->gpr[4] == 0x77810f9b &&
2226 env->osi_call) {
2227 if (env->osi_call(env) != 0) {
2228 env->exception_index = POWERPC_EXCP_NONE;
2229 env->error_code = 0;
2230 return;
2231 }
2232 }
2233 dump_syscall(env);
2234 new_msr &= ~((target_ulong)1 << MSR_RI);
2235 lev = env->error_code;
2236 if (lev == 1 || (lpes0 == 0 && lpes1 == 0))
2237 new_msr |= (target_ulong)MSR_HVB;
2238 goto store_next;
2239 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
2240 new_msr &= ~((target_ulong)1 << MSR_RI);
2241 goto store_current;
2242 case POWERPC_EXCP_DECR: /* Decrementer exception */
2243 new_msr &= ~((target_ulong)1 << MSR_RI);
2244 if (lpes1 == 0)
2245 new_msr |= (target_ulong)MSR_HVB;
2246 goto store_next;
2247 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
2248 /* FIT on 4xx */
2249 LOG_EXCP("FIT exception\n");
2250 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2251 goto store_next;
2252 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
2253 LOG_EXCP("WDT exception\n");
2254 switch (excp_model) {
2255 case POWERPC_EXCP_BOOKE:
2256 srr0 = SPR_BOOKE_CSRR0;
2257 srr1 = SPR_BOOKE_CSRR1;
2258 break;
2259 default:
2260 break;
2261 }
2262 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2263 goto store_next;
2264 case POWERPC_EXCP_DTLB: /* Data TLB error */
2265 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2266 goto store_next;
2267 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
2268 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2269 goto store_next;
2270 case POWERPC_EXCP_DEBUG: /* Debug interrupt */
2271 switch (excp_model) {
2272 case POWERPC_EXCP_BOOKE:
2273 srr0 = SPR_BOOKE_DSRR0;
2274 srr1 = SPR_BOOKE_DSRR1;
2275 asrr0 = SPR_BOOKE_CSRR0;
2276 asrr1 = SPR_BOOKE_CSRR1;
2277 break;
2278 default:
2279 break;
2280 }
2281 /* XXX: TODO */
2282 cpu_abort(env, "Debug exception is not implemented yet !\n");
2283 goto store_next;
2284 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavailable */
2285 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2286 goto store_current;
2287 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data interrupt */
2288 /* XXX: TODO */
2289 cpu_abort(env, "Embedded floating point data exception "
2290 "is not implemented yet !\n");
2291 goto store_next;
2292 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round interrupt */
2293 /* XXX: TODO */
2294 cpu_abort(env, "Embedded floating point round exception "
2295 "is not implemented yet !\n");
2296 goto store_next;
2297 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor interrupt */
2298 new_msr &= ~((target_ulong)1 << MSR_RI);
2299 /* XXX: TODO */
2300 cpu_abort(env,
2301 "Performance counter exception is not implemented yet !\n");
2302 goto store_next;
2303 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
2304 /* XXX: TODO */
2305 cpu_abort(env,
2306 "Embedded doorbell interrupt is not implemented yet !\n");
2307 goto store_next;
2308 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
2309 switch (excp_model) {
2310 case POWERPC_EXCP_BOOKE:
2311 srr0 = SPR_BOOKE_CSRR0;
2312 srr1 = SPR_BOOKE_CSRR1;
2313 break;
2314 default:
2315 break;
2316 }
2317 /* XXX: TODO */
2318 cpu_abort(env, "Embedded doorbell critical interrupt "
2319 "is not implemented yet !\n");
2320 goto store_next;
2321 case POWERPC_EXCP_RESET: /* System reset exception */
2322 new_msr &= ~((target_ulong)1 << MSR_RI);
2323 if (0) {
2324 /* XXX: find a suitable condition to enable the hypervisor mode */
2325 new_msr |= (target_ulong)MSR_HVB;
2326 }
2327 goto store_next;
2328 case POWERPC_EXCP_DSEG: /* Data segment exception */
2329 new_msr &= ~((target_ulong)1 << MSR_RI);
2330 if (lpes1 == 0)
2331 new_msr |= (target_ulong)MSR_HVB;
2332 goto store_next;
2333 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
2334 new_msr &= ~((target_ulong)1 << MSR_RI);
2335 if (lpes1 == 0)
2336 new_msr |= (target_ulong)MSR_HVB;
2337 goto store_next;
2338 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
2339 srr0 = SPR_HSRR0;
2340 srr1 = SPR_HSRR1;
2341 new_msr |= (target_ulong)MSR_HVB;
2342 goto store_next;
2343 case POWERPC_EXCP_TRACE: /* Trace exception */
2344 new_msr &= ~((target_ulong)1 << MSR_RI);
2345 if (lpes1 == 0)
2346 new_msr |= (target_ulong)MSR_HVB;
2347 goto store_next;
2348 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
2349 srr0 = SPR_HSRR0;
2350 srr1 = SPR_HSRR1;
2351 new_msr |= (target_ulong)MSR_HVB;
2352 goto store_next;
2353 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */
2354 srr0 = SPR_HSRR0;
2355 srr1 = SPR_HSRR1;
2356 new_msr |= (target_ulong)MSR_HVB;
2357 goto store_next;
2358 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
2359 srr0 = SPR_HSRR0;
2360 srr1 = SPR_HSRR1;
2361 new_msr |= (target_ulong)MSR_HVB;
2362 goto store_next;
2363 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment exception */
2364 srr0 = SPR_HSRR0;
2365 srr1 = SPR_HSRR1;
2366 new_msr |= (target_ulong)MSR_HVB;
2367 goto store_next;
2368 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
2369 new_msr &= ~((target_ulong)1 << MSR_RI);
2370 if (lpes1 == 0)
2371 new_msr |= (target_ulong)MSR_HVB;
2372 goto store_current;
2373 case POWERPC_EXCP_PIT: /* Programmable interval timer interrupt */
2374 LOG_EXCP("PIT exception\n");
2375 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2376 goto store_next;
2377 case POWERPC_EXCP_IO: /* IO error exception */
2378 /* XXX: TODO */
2379 cpu_abort(env, "601 IO error exception is not implemented yet !\n");
2380 goto store_next;
2381 case POWERPC_EXCP_RUNM: /* Run mode exception */
2382 /* XXX: TODO */
2383 cpu_abort(env, "601 run mode exception is not implemented yet !\n");
2384 goto store_next;
2385 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
2386 /* XXX: TODO */
2387 cpu_abort(env, "602 emulation trap exception "
2388 "is not implemented yet !\n");
2389 goto store_next;
2390 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
2391 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2392 if (lpes1 == 0) /* XXX: check this */
2393 new_msr |= (target_ulong)MSR_HVB;
2394 switch (excp_model) {
2395 case POWERPC_EXCP_602:
2396 case POWERPC_EXCP_603:
2397 case POWERPC_EXCP_603E:
2398 case POWERPC_EXCP_G2:
2399 goto tlb_miss_tgpr;
2400 case POWERPC_EXCP_7x5:
2401 goto tlb_miss;
2402 case POWERPC_EXCP_74xx:
2403 goto tlb_miss_74xx;
2404 default:
2405 cpu_abort(env, "Invalid instruction TLB miss exception\n");
2406 break;
2407 }
2408 break;
2409 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
2410 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2411 if (lpes1 == 0) /* XXX: check this */
2412 new_msr |= (target_ulong)MSR_HVB;
2413 switch (excp_model) {
2414 case POWERPC_EXCP_602:
2415 case POWERPC_EXCP_603:
2416 case POWERPC_EXCP_603E:
2417 case POWERPC_EXCP_G2:
2418 goto tlb_miss_tgpr;
2419 case POWERPC_EXCP_7x5:
2420 goto tlb_miss;
2421 case POWERPC_EXCP_74xx:
2422 goto tlb_miss_74xx;
2423 default:
2424 cpu_abort(env, "Invalid data load TLB miss exception\n");
2425 break;
2426 }
2427 break;
2428 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
2429 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2430 if (lpes1 == 0) /* XXX: check this */
2431 new_msr |= (target_ulong)MSR_HVB;
2432 switch (excp_model) {
2433 case POWERPC_EXCP_602:
2434 case POWERPC_EXCP_603:
2435 case POWERPC_EXCP_603E:
2436 case POWERPC_EXCP_G2:
2437 tlb_miss_tgpr:
2438 /* Swap temporary saved registers with GPRs */
2439 if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) {
2440 new_msr |= (target_ulong)1 << MSR_TGPR;
2441 hreg_swap_gpr_tgpr(env);
2442 }
2443 goto tlb_miss;
2444 case POWERPC_EXCP_7x5:
2445 tlb_miss:
2446 #if defined (DEBUG_SOFTWARE_TLB)
2447 if (qemu_log_enabled()) {
2448 const char *es;
2449 target_ulong *miss, *cmp;
2450 int en;
2451 if (excp == POWERPC_EXCP_IFTLB) {
2452 es = "I";
2453 en = 'I';
2454 miss = &env->spr[SPR_IMISS];
2455 cmp = &env->spr[SPR_ICMP];
2456 } else {
2457 if (excp == POWERPC_EXCP_DLTLB)
2458 es = "DL";
2459 else
2460 es = "DS";
2461 en = 'D';
2462 miss = &env->spr[SPR_DMISS];
2463 cmp = &env->spr[SPR_DCMP];
2464 }
2465 qemu_log("6xx %sTLB miss: %cM " ADDRX " %cC " ADDRX
2466 " H1 " ADDRX " H2 " ADDRX " %08x\n",
2467 es, en, *miss, en, *cmp,
2468 env->spr[SPR_HASH1], env->spr[SPR_HASH2],
2469 env->error_code);
2470 }
2471 #endif
2472 msr |= env->crf[0] << 28;
2473 msr |= env->error_code; /* key, D/I, S/L bits */
2474 /* Set way using a LRU mechanism */
2475 msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
2476 break;
2477 case POWERPC_EXCP_74xx:
2478 tlb_miss_74xx:
2479 #if defined (DEBUG_SOFTWARE_TLB)
2480 if (qemu_log_enabled()) {
2481 const char *es;
2482 target_ulong *miss, *cmp;
2483 int en;
2484 if (excp == POWERPC_EXCP_IFTLB) {
2485 es = "I";
2486 en = 'I';
2487 miss = &env->spr[SPR_TLBMISS];
2488 cmp = &env->spr[SPR_PTEHI];
2489 } else {
2490 if (excp == POWERPC_EXCP_DLTLB)
2491 es = "DL";
2492 else
2493 es = "DS";
2494 en = 'D';
2495 miss = &env->spr[SPR_TLBMISS];
2496 cmp = &env->spr[SPR_PTEHI];
2497 }
2498 qemu_log("74xx %sTLB miss: %cM " ADDRX " %cC " ADDRX
2499 " %08x\n",
2500 es, en, *miss, en, *cmp, env->error_code);
2501 }
2502 #endif
2503 msr |= env->error_code; /* key bit */
2504 break;
2505 default:
2506 cpu_abort(env, "Invalid data store TLB miss exception\n");
2507 break;
2508 }
2509 goto store_next;
2510 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
2511 /* XXX: TODO */
2512 cpu_abort(env, "Floating point assist exception "
2513 "is not implemented yet !\n");
2514 goto store_next;
2515 case POWERPC_EXCP_DABR: /* Data address breakpoint */
2516 /* XXX: TODO */
2517 cpu_abort(env, "DABR exception is not implemented yet !\n");
2518 goto store_next;
2519 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
2520 /* XXX: TODO */
2521 cpu_abort(env, "IABR exception is not implemented yet !\n");
2522 goto store_next;
2523 case POWERPC_EXCP_SMI: /* System management interrupt */
2524 /* XXX: TODO */
2525 cpu_abort(env, "SMI exception is not implemented yet !\n");
2526 goto store_next;
2527 case POWERPC_EXCP_THERM: /* Thermal interrupt */
2528 /* XXX: TODO */
2529 cpu_abort(env, "Thermal management exception "
2530 "is not implemented yet !\n");
2531 goto store_next;
2532 case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */
2533 new_msr &= ~((target_ulong)1 << MSR_RI);
2534 if (lpes1 == 0)
2535 new_msr |= (target_ulong)MSR_HVB;
2536 /* XXX: TODO */
2537 cpu_abort(env,
2538 "Performance counter exception is not implemented yet !\n");
2539 goto store_next;
2540 case POWERPC_EXCP_VPUA: /* Vector assist exception */
2541 /* XXX: TODO */
2542 cpu_abort(env, "VPU assist exception is not implemented yet !\n");
2543 goto store_next;
2544 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
2545 /* XXX: TODO */
2546 cpu_abort(env,
2547 "970 soft-patch exception is not implemented yet !\n");
2548 goto store_next;
2549 case POWERPC_EXCP_MAINT: /* Maintenance exception */
2550 /* XXX: TODO */
2551 cpu_abort(env,
2552 "970 maintenance exception is not implemented yet !\n");
2553 goto store_next;
2554 case POWERPC_EXCP_MEXTBR: /* Maskable external breakpoint */
2555 /* XXX: TODO */
2556 cpu_abort(env, "Maskable external exception "
2557 "is not implemented yet !\n");
2558 goto store_next;
2559 case POWERPC_EXCP_NMEXTBR: /* Non maskable external breakpoint */
2560 /* XXX: TODO */
2561 cpu_abort(env, "Non maskable external exception "
2562 "is not implemented yet !\n");
2563 goto store_next;
2564 default:
2565 excp_invalid:
2566 cpu_abort(env, "Invalid PowerPC exception %d. Aborting\n", excp);
2567 break;
2568 store_current:
2569 /* save current instruction location */
2570 env->spr[srr0] = env->nip - 4;
2571 break;
2572 store_next:
2573 /* save next instruction location */
2574 env->spr[srr0] = env->nip;
2575 break;
2576 }
2577 /* Save MSR */
2578 env->spr[srr1] = msr;
2579 /* If any alternate SRR register are defined, duplicate saved values */
2580 if (asrr0 != -1)
2581 env->spr[asrr0] = env->spr[srr0];
2582 if (asrr1 != -1)
2583 env->spr[asrr1] = env->spr[srr1];
2584 /* If we disactivated any translation, flush TLBs */
2585 if (new_msr & ((1 << MSR_IR) | (1 << MSR_DR)))
2586 tlb_flush(env, 1);
2587 /* reload MSR with correct bits */
2588 new_msr &= ~((target_ulong)1 << MSR_EE);
2589 new_msr &= ~((target_ulong)1 << MSR_PR);
2590 new_msr &= ~((target_ulong)1 << MSR_FP);
2591 new_msr &= ~((target_ulong)1 << MSR_FE0);
2592 new_msr &= ~((target_ulong)1 << MSR_SE);
2593 new_msr &= ~((target_ulong)1 << MSR_BE);
2594 new_msr &= ~((target_ulong)1 << MSR_FE1);
2595 new_msr &= ~((target_ulong)1 << MSR_IR);
2596 new_msr &= ~((target_ulong)1 << MSR_DR);
2597 #if 0 /* Fix this: not on all targets */
2598 new_msr &= ~((target_ulong)1 << MSR_PMM);
2599 #endif
2600 new_msr &= ~((target_ulong)1 << MSR_LE);
2601 if (msr_ile)
2602 new_msr |= (target_ulong)1 << MSR_LE;
2603 else
2604 new_msr &= ~((target_ulong)1 << MSR_LE);
2605 /* Jump to handler */
2606 vector = env->excp_vectors[excp];
2607 if (vector == (target_ulong)-1ULL) {
2608 cpu_abort(env, "Raised an exception without defined vector %d\n",
2609 excp);
2610 }
2611 vector |= env->excp_prefix;
2612 #if defined(TARGET_PPC64)
2613 if (excp_model == POWERPC_EXCP_BOOKE) {
2614 if (!msr_icm) {
2615 new_msr &= ~((target_ulong)1 << MSR_CM);
2616 vector = (uint32_t)vector;
2617 } else {
2618 new_msr |= (target_ulong)1 << MSR_CM;
2619 }
2620 } else {
2621 if (!msr_isf && !(env->mmu_model & POWERPC_MMU_64)) {
2622 new_msr &= ~((target_ulong)1 << MSR_SF);
2623 vector = (uint32_t)vector;
2624 } else {
2625 new_msr |= (target_ulong)1 << MSR_SF;
2626 }
2627 }
2628 #endif
2629 /* XXX: we don't use hreg_store_msr here as already have treated
2630 * any special case that could occur. Just store MSR and update hflags
2631 */
2632 env->msr = new_msr & env->msr_mask;
2633 hreg_compute_hflags(env);
2634 env->nip = vector;
2635 /* Reset exception state */
2636 env->exception_index = POWERPC_EXCP_NONE;
2637 env->error_code = 0;
2638 }
2639
2640 void do_interrupt (CPUState *env)
2641 {
2642 powerpc_excp(env, env->excp_model, env->exception_index);
2643 }
2644
2645 void ppc_hw_interrupt (CPUPPCState *env)
2646 {
2647 int hdice;
2648
2649 #if 0
2650 qemu_log_mask(CPU_LOG_INT, "%s: %p pending %08x req %08x me %d ee %d\n",
2651 __func__, env, env->pending_interrupts,
2652 env->interrupt_request, (int)msr_me, (int)msr_ee);
2653 #endif
2654 /* External reset */
2655 if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) {
2656 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
2657 powerpc_excp(env, env->excp_model, POWERPC_EXCP_RESET);
2658 return;
2659 }
2660 /* Machine check exception */
2661 if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) {
2662 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
2663 powerpc_excp(env, env->excp_model, POWERPC_EXCP_MCHECK);
2664 return;
2665 }
2666 #if 0 /* TODO */
2667 /* External debug exception */
2668 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
2669 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
2670 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DEBUG);
2671 return;
2672 }
2673 #endif
2674 if (0) {
2675 /* XXX: find a suitable condition to enable the hypervisor mode */
2676 hdice = env->spr[SPR_LPCR] & 1;
2677 } else {
2678 hdice = 0;
2679 }
2680 if ((msr_ee != 0 || msr_hv == 0 || msr_pr != 0) && hdice != 0) {
2681 /* Hypervisor decrementer exception */
2682 if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) {
2683 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDECR);
2684 powerpc_excp(env, env->excp_model, POWERPC_EXCP_HDECR);
2685 return;
2686 }
2687 }
2688 if (msr_ce != 0) {
2689 /* External critical interrupt */
2690 if (env->pending_interrupts & (1 << PPC_INTERRUPT_CEXT)) {
2691 /* Taking a critical external interrupt does not clear the external
2692 * critical interrupt status
2693 */
2694 #if 0
2695 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CEXT);
2696 #endif
2697 powerpc_excp(env, env->excp_model, POWERPC_EXCP_CRITICAL);
2698 return;
2699 }
2700 }
2701 if (msr_ee != 0) {
2702 /* Watchdog timer on embedded PowerPC */
2703 if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) {
2704 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
2705 powerpc_excp(env, env->excp_model, POWERPC_EXCP_WDT);
2706 return;
2707 }
2708 if (env->pending_interrupts & (1 << PPC_INTERRUPT_CDOORBELL)) {
2709 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CDOORBELL);
2710 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DOORCI);
2711 return;
2712 }
2713 /* Fixed interval timer on embedded PowerPC */
2714 if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) {
2715 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
2716 powerpc_excp(env, env->excp_model, POWERPC_EXCP_FIT);
2717 return;
2718 }
2719 /* Programmable interval timer on embedded PowerPC */
2720 if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) {
2721 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
2722 powerpc_excp(env, env->excp_model, POWERPC_EXCP_PIT);
2723 return;
2724 }
2725 /* Decrementer exception */
2726 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) {
2727 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
2728 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DECR);
2729 return;
2730 }
2731 /* External interrupt */
2732 if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) {
2733 /* Taking an external interrupt does not clear the external
2734 * interrupt status
2735 */
2736 #if 0
2737 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_EXT);
2738 #endif
2739 powerpc_excp(env, env->excp_model, POWERPC_EXCP_EXTERNAL);
2740 return;
2741 }
2742 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DOORBELL)) {
2743 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DOORBELL);
2744 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DOORI);
2745 return;
2746 }
2747 if (env->pending_interrupts & (1 << PPC_INTERRUPT_PERFM)) {
2748 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PERFM);
2749 powerpc_excp(env, env->excp_model, POWERPC_EXCP_PERFM);
2750 return;
2751 }
2752 /* Thermal interrupt */
2753 if (env->pending_interrupts & (1 << PPC_INTERRUPT_THERM)) {
2754 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_THERM);
2755 powerpc_excp(env, env->excp_model, POWERPC_EXCP_THERM);
2756 return;
2757 }
2758 }
2759 }
2760 #endif /* !CONFIG_USER_ONLY */
2761
2762 void cpu_dump_rfi (target_ulong RA, target_ulong msr)
2763 {
2764 qemu_log("Return from exception at " ADDRX " with flags " ADDRX "\n",
2765 RA, msr);
2766 }
2767
2768 void cpu_ppc_reset (void *opaque)
2769 {
2770 CPUPPCState *env = opaque;
2771 target_ulong msr;
2772
2773 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
2774 qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
2775 log_cpu_state(env, 0);
2776 }
2777
2778 msr = (target_ulong)0;
2779 if (0) {
2780 /* XXX: find a suitable condition to enable the hypervisor mode */
2781 msr |= (target_ulong)MSR_HVB;
2782 }
2783 msr |= (target_ulong)0 << MSR_AP; /* TO BE CHECKED */
2784 msr |= (target_ulong)0 << MSR_SA; /* TO BE CHECKED */
2785 msr |= (target_ulong)1 << MSR_EP;
2786 #if defined (DO_SINGLE_STEP) && 0
2787 /* Single step trace mode */
2788 msr |= (target_ulong)1 << MSR_SE;
2789 msr |= (target_ulong)1 << MSR_BE;
2790 #endif
2791 #if defined(CONFIG_USER_ONLY)
2792 msr |= (target_ulong)1 << MSR_FP; /* Allow floating point usage */
2793 msr |= (target_ulong)1 << MSR_VR; /* Allow altivec usage */
2794 msr |= (target_ulong)1 << MSR_SPE; /* Allow SPE usage */
2795 msr |= (target_ulong)1 << MSR_PR;
2796 #else
2797 env->excp_prefix = env->hreset_excp_prefix;
2798 env->nip = env->hreset_vector | env->excp_prefix;
2799 if (env->mmu_model != POWERPC_MMU_REAL)
2800 ppc_tlb_invalidate_all(env);
2801 #endif
2802 env->msr = msr & env->msr_mask;
2803 #if defined(TARGET_PPC64)
2804 if (env->mmu_model & POWERPC_MMU_64)
2805 env->msr |= (1ULL << MSR_SF);
2806 #endif
2807 hreg_compute_hflags(env);
2808 env->reserve = (target_ulong)-1ULL;
2809 /* Be sure no exception or interrupt is pending */
2810 env->pending_interrupts = 0;
2811 env->exception_index = POWERPC_EXCP_NONE;
2812 env->error_code = 0;
2813 /* Flush all TLBs */
2814 tlb_flush(env, 1);
2815 }
2816
2817 CPUPPCState *cpu_ppc_init (const char *cpu_model)
2818 {
2819 CPUPPCState *env;
2820 const ppc_def_t *def;
2821
2822 def = cpu_ppc_find_by_name(cpu_model);
2823 if (!def)
2824 return NULL;
2825
2826 env = qemu_mallocz(sizeof(CPUPPCState));
2827 cpu_exec_init(env);
2828 ppc_translate_init();
2829 env->cpu_model_str = cpu_model;
2830 cpu_ppc_register_internal(env, def);
2831 cpu_ppc_reset(env);
2832
2833 qemu_init_vcpu(env);
2834
2835 return env;
2836 }
2837
2838 void cpu_ppc_close (CPUPPCState *env)
2839 {
2840 /* Should also remove all opcode tables... */
2841 qemu_free(env);
2842 }
Patches shipped by Fedora