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user mode networking don't work
[qemu/mini2440.git] / target-ppc / helper.c
blob5a7a935bb118cd35bfc2ec0bc04574d4dafba6af
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, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
19 */
20 #include <stdarg.h>
21 #include <stdlib.h>
22 #include <stdio.h>
23 #include <string.h>
24 #include <inttypes.h>
25 #include <signal.h>
26
27 #include "cpu.h"
28 #include "exec-all.h"
29 #include "helper_regs.h"
30 #include "qemu-common.h"
31 #include "kvm.h"
32
33 //#define DEBUG_MMU
34 //#define DEBUG_BATS
35 //#define DEBUG_SLB
36 //#define DEBUG_SOFTWARE_TLB
37 //#define DUMP_PAGE_TABLES
38 //#define DEBUG_EXCEPTIONS
39 //#define FLUSH_ALL_TLBS
40
41 #ifdef DEBUG_MMU
42 # define LOG_MMU(...) qemu_log(__VA_ARGS__)
43 # define LOG_MMU_STATE(env) log_cpu_state((env), 0)
44 #else
45 # define LOG_MMU(...) do { } while (0)
46 # define LOG_MMU_STATE(...) do { } while (0)
47 #endif
48
49
50 #ifdef DEBUG_SOFTWARE_TLB
51 # define LOG_SWTLB(...) qemu_log(__VA_ARGS__)
52 #else
53 # define LOG_SWTLB(...) do { } while (0)
54 #endif
55
56 #ifdef DEBUG_BATS
57 # define LOG_BATS(...) qemu_log(__VA_ARGS__)
58 #else
59 # define LOG_BATS(...) do { } while (0)
60 #endif
61
62 #ifdef DEBUG_SLB
63 # define LOG_SLB(...) qemu_log(__VA_ARGS__)
64 #else
65 # define LOG_SLB(...) do { } while (0)
66 #endif
67
68 #ifdef DEBUG_EXCEPTIONS
69 # define LOG_EXCP(...) qemu_log(__VA_ARGS__)
70 #else
71 # define LOG_EXCP(...) do { } while (0)
72 #endif
73
74
75 /*****************************************************************************/
76 /* PowerPC MMU emulation */
77
78 #if defined(CONFIG_USER_ONLY)
79 int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
80 int mmu_idx, int is_softmmu)
81 {
82 int exception, error_code;
83
84 if (rw == 2) {
85 exception = POWERPC_EXCP_ISI;
86 error_code = 0x40000000;
87 } else {
88 exception = POWERPC_EXCP_DSI;
89 error_code = 0x40000000;
90 if (rw)
91 error_code |= 0x02000000;
92 env->spr[SPR_DAR] = address;
93 env->spr[SPR_DSISR] = error_code;
94 }
95 env->exception_index = exception;
96 env->error_code = error_code;
97
98 return 1;
99 }
100
101 target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
102 {
103 return addr;
104 }
105
106 #else
107 /* Common routines used by software and hardware TLBs emulation */
108 static always_inline int pte_is_valid (target_ulong pte0)
109 {
110 return pte0 & 0x80000000 ? 1 : 0;
111 }
112
113 static always_inline void pte_invalidate (target_ulong *pte0)
114 {
115 *pte0 &= ~0x80000000;
116 }
117
118 #if defined(TARGET_PPC64)
119 static always_inline int pte64_is_valid (target_ulong pte0)
120 {
121 return pte0 & 0x0000000000000001ULL ? 1 : 0;
122 }
123
124 static always_inline void pte64_invalidate (target_ulong *pte0)
125 {
126 *pte0 &= ~0x0000000000000001ULL;
127 }
128 #endif
129
130 #define PTE_PTEM_MASK 0x7FFFFFBF
131 #define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
132 #if defined(TARGET_PPC64)
133 #define PTE64_PTEM_MASK 0xFFFFFFFFFFFFFF80ULL
134 #define PTE64_CHECK_MASK (TARGET_PAGE_MASK | 0x7F)
135 #endif
136
137 static always_inline int pp_check (int key, int pp, int nx)
138 {
139 int access;
140
141 /* Compute access rights */
142 /* When pp is 3/7, the result is undefined. Set it to noaccess */
143 access = 0;
144 if (key == 0) {
145 switch (pp) {
146 case 0x0:
147 case 0x1:
148 case 0x2:
149 access |= PAGE_WRITE;
150 /* No break here */
151 case 0x3:
152 case 0x6:
153 access |= PAGE_READ;
154 break;
155 }
156 } else {
157 switch (pp) {
158 case 0x0:
159 case 0x6:
160 access = 0;
161 break;
162 case 0x1:
163 case 0x3:
164 access = PAGE_READ;
165 break;
166 case 0x2:
167 access = PAGE_READ | PAGE_WRITE;
168 break;
169 }
170 }
171 if (nx == 0)
172 access |= PAGE_EXEC;
173
174 return access;
175 }
176
177 static always_inline int check_prot (int prot, int rw, int access_type)
178 {
179 int ret;
180
181 if (access_type == ACCESS_CODE) {
182 if (prot & PAGE_EXEC)
183 ret = 0;
184 else
185 ret = -2;
186 } else if (rw) {
187 if (prot & PAGE_WRITE)
188 ret = 0;
189 else
190 ret = -2;
191 } else {
192 if (prot & PAGE_READ)
193 ret = 0;
194 else
195 ret = -2;
196 }
197
198 return ret;
199 }
200
201 static always_inline int _pte_check (mmu_ctx_t *ctx, int is_64b,
202 target_ulong pte0, target_ulong pte1,
203 int h, int rw, int type)
204 {
205 target_ulong ptem, mmask;
206 int access, ret, pteh, ptev, pp;
207
208 access = 0;
209 ret = -1;
210 /* Check validity and table match */
211 #if defined(TARGET_PPC64)
212 if (is_64b) {
213 ptev = pte64_is_valid(pte0);
214 pteh = (pte0 >> 1) & 1;
215 } else
216 #endif
217 {
218 ptev = pte_is_valid(pte0);
219 pteh = (pte0 >> 6) & 1;
220 }
221 if (ptev && h == pteh) {
222 /* Check vsid & api */
223 #if defined(TARGET_PPC64)
224 if (is_64b) {
225 ptem = pte0 & PTE64_PTEM_MASK;
226 mmask = PTE64_CHECK_MASK;
227 pp = (pte1 & 0x00000003) | ((pte1 >> 61) & 0x00000004);
228 ctx->nx = (pte1 >> 2) & 1; /* No execute bit */
229 ctx->nx |= (pte1 >> 3) & 1; /* Guarded bit */
230 } else
231 #endif
232 {
233 ptem = pte0 & PTE_PTEM_MASK;
234 mmask = PTE_CHECK_MASK;
235 pp = pte1 & 0x00000003;
236 }
237 if (ptem == ctx->ptem) {
238 if (ctx->raddr != (target_phys_addr_t)-1ULL) {
239 /* all matches should have equal RPN, WIMG & PP */
240 if ((ctx->raddr & mmask) != (pte1 & mmask)) {
241 qemu_log("Bad RPN/WIMG/PP\n");
242 return -3;
243 }
244 }
245 /* Compute access rights */
246 access = pp_check(ctx->key, pp, ctx->nx);
247 /* Keep the matching PTE informations */
248 ctx->raddr = pte1;
249 ctx->prot = access;
250 ret = check_prot(ctx->prot, rw, type);
251 if (ret == 0) {
252 /* Access granted */
253 LOG_MMU("PTE access granted !\n");
254 } else {
255 /* Access right violation */
256 LOG_MMU("PTE access rejected\n");
257 }
258 }
259 }
260
261 return ret;
262 }
263
264 static always_inline int pte32_check (mmu_ctx_t *ctx,
265 target_ulong pte0, target_ulong pte1,
266 int h, int rw, int type)
267 {
268 return _pte_check(ctx, 0, pte0, pte1, h, rw, type);
269 }
270
271 #if defined(TARGET_PPC64)
272 static always_inline int pte64_check (mmu_ctx_t *ctx,
273 target_ulong pte0, target_ulong pte1,
274 int h, int rw, int type)
275 {
276 return _pte_check(ctx, 1, pte0, pte1, h, rw, type);
277 }
278 #endif
279
280 static always_inline int pte_update_flags (mmu_ctx_t *ctx, target_ulong *pte1p,
281 int ret, int rw)
282 {
283 int store = 0;
284
285 /* Update page flags */
286 if (!(*pte1p & 0x00000100)) {
287 /* Update accessed flag */
288 *pte1p |= 0x00000100;
289 store = 1;
290 }
291 if (!(*pte1p & 0x00000080)) {
292 if (rw == 1 && ret == 0) {
293 /* Update changed flag */
294 *pte1p |= 0x00000080;
295 store = 1;
296 } else {
297 /* Force page fault for first write access */
298 ctx->prot &= ~PAGE_WRITE;
299 }
300 }
301
302 return store;
303 }
304
305 /* Software driven TLB helpers */
306 static always_inline int ppc6xx_tlb_getnum (CPUState *env, target_ulong eaddr,
307 int way, int is_code)
308 {
309 int nr;
310
311 /* Select TLB num in a way from address */
312 nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1);
313 /* Select TLB way */
314 nr += env->tlb_per_way * way;
315 /* 6xx have separate TLBs for instructions and data */
316 if (is_code && env->id_tlbs == 1)
317 nr += env->nb_tlb;
318
319 return nr;
320 }
321
322 static always_inline void ppc6xx_tlb_invalidate_all (CPUState *env)
323 {
324 ppc6xx_tlb_t *tlb;
325 int nr, max;
326
327 //LOG_SWTLB("Invalidate all TLBs\n");
328 /* Invalidate all defined software TLB */
329 max = env->nb_tlb;
330 if (env->id_tlbs == 1)
331 max *= 2;
332 for (nr = 0; nr < max; nr++) {
333 tlb = &env->tlb[nr].tlb6;
334 pte_invalidate(&tlb->pte0);
335 }
336 tlb_flush(env, 1);
337 }
338
339 static always_inline void __ppc6xx_tlb_invalidate_virt (CPUState *env,
340 target_ulong eaddr,
341 int is_code,
342 int match_epn)
343 {
344 #if !defined(FLUSH_ALL_TLBS)
345 ppc6xx_tlb_t *tlb;
346 int way, nr;
347
348 /* Invalidate ITLB + DTLB, all ways */
349 for (way = 0; way < env->nb_ways; way++) {
350 nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code);
351 tlb = &env->tlb[nr].tlb6;
352 if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) {
353 LOG_SWTLB("TLB invalidate %d/%d " ADDRX "\n",
354 nr, env->nb_tlb, eaddr);
355 pte_invalidate(&tlb->pte0);
356 tlb_flush_page(env, tlb->EPN);
357 }
358 }
359 #else
360 /* XXX: PowerPC specification say this is valid as well */
361 ppc6xx_tlb_invalidate_all(env);
362 #endif
363 }
364
365 static always_inline void ppc6xx_tlb_invalidate_virt (CPUState *env,
366 target_ulong eaddr,
367 int is_code)
368 {
369 __ppc6xx_tlb_invalidate_virt(env, eaddr, is_code, 0);
370 }
371
372 void ppc6xx_tlb_store (CPUState *env, target_ulong EPN, int way, int is_code,
373 target_ulong pte0, target_ulong pte1)
374 {
375 ppc6xx_tlb_t *tlb;
376 int nr;
377
378 nr = ppc6xx_tlb_getnum(env, EPN, way, is_code);
379 tlb = &env->tlb[nr].tlb6;
380 LOG_SWTLB("Set TLB %d/%d EPN " ADDRX " PTE0 " ADDRX
381 " PTE1 " ADDRX "\n", nr, env->nb_tlb, EPN, pte0, pte1);
382 /* Invalidate any pending reference in Qemu for this virtual address */
383 __ppc6xx_tlb_invalidate_virt(env, EPN, is_code, 1);
384 tlb->pte0 = pte0;
385 tlb->pte1 = pte1;
386 tlb->EPN = EPN;
387 /* Store last way for LRU mechanism */
388 env->last_way = way;
389 }
390
391 static always_inline int ppc6xx_tlb_check (CPUState *env, mmu_ctx_t *ctx,
392 target_ulong eaddr, int rw,
393 int access_type)
394 {
395 ppc6xx_tlb_t *tlb;
396 int nr, best, way;
397 int ret;
398
399 best = -1;
400 ret = -1; /* No TLB found */
401 for (way = 0; way < env->nb_ways; way++) {
402 nr = ppc6xx_tlb_getnum(env, eaddr, way,
403 access_type == ACCESS_CODE ? 1 : 0);
404 tlb = &env->tlb[nr].tlb6;
405 /* This test "emulates" the PTE index match for hardware TLBs */
406 if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) {
407 LOG_SWTLB("TLB %d/%d %s [" ADDRX " " ADDRX
408 "] <> " ADDRX "\n",
409 nr, env->nb_tlb,
410 pte_is_valid(tlb->pte0) ? "valid" : "inval",
411 tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr);
412 continue;
413 }
414 LOG_SWTLB("TLB %d/%d %s " ADDRX " <> " ADDRX " " ADDRX
415 " %c %c\n",
416 nr, env->nb_tlb,
417 pte_is_valid(tlb->pte0) ? "valid" : "inval",
418 tlb->EPN, eaddr, tlb->pte1,
419 rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D');
420 switch (pte32_check(ctx, tlb->pte0, tlb->pte1, 0, rw, access_type)) {
421 case -3:
422 /* TLB inconsistency */
423 return -1;
424 case -2:
425 /* Access violation */
426 ret = -2;
427 best = nr;
428 break;
429 case -1:
430 default:
431 /* No match */
432 break;
433 case 0:
434 /* access granted */
435 /* XXX: we should go on looping to check all TLBs consistency
436 * but we can speed-up the whole thing as the
437 * result would be undefined if TLBs are not consistent.
438 */
439 ret = 0;
440 best = nr;
441 goto done;
442 }
443 }
444 if (best != -1) {
445 done:
446 LOG_SWTLB("found TLB at addr " PADDRX " prot=%01x ret=%d\n",
447 ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret);
448 /* Update page flags */
449 pte_update_flags(ctx, &env->tlb[best].tlb6.pte1, ret, rw);
450 }
451
452 return ret;
453 }
454
455 /* Perform BAT hit & translation */
456 static always_inline void bat_size_prot (CPUState *env, target_ulong *blp,
457 int *validp, int *protp,
458 target_ulong *BATu, target_ulong *BATl)
459 {
460 target_ulong bl;
461 int pp, valid, prot;
462
463 bl = (*BATu & 0x00001FFC) << 15;
464 valid = 0;
465 prot = 0;
466 if (((msr_pr == 0) && (*BATu & 0x00000002)) ||
467 ((msr_pr != 0) && (*BATu & 0x00000001))) {
468 valid = 1;
469 pp = *BATl & 0x00000003;
470 if (pp != 0) {
471 prot = PAGE_READ | PAGE_EXEC;
472 if (pp == 0x2)
473 prot |= PAGE_WRITE;
474 }
475 }
476 *blp = bl;
477 *validp = valid;
478 *protp = prot;
479 }
480
481 static always_inline void bat_601_size_prot (CPUState *env,target_ulong *blp,
482 int *validp, int *protp,
483 target_ulong *BATu,
484 target_ulong *BATl)
485 {
486 target_ulong bl;
487 int key, pp, valid, prot;
488
489 bl = (*BATl & 0x0000003F) << 17;
490 LOG_BATS("b %02x ==> bl " ADDRX " msk " ADDRX "\n",
491 (uint8_t)(*BATl & 0x0000003F), bl, ~bl);
492 prot = 0;
493 valid = (*BATl >> 6) & 1;
494 if (valid) {
495 pp = *BATu & 0x00000003;
496 if (msr_pr == 0)
497 key = (*BATu >> 3) & 1;
498 else
499 key = (*BATu >> 2) & 1;
500 prot = pp_check(key, pp, 0);
501 }
502 *blp = bl;
503 *validp = valid;
504 *protp = prot;
505 }
506
507 static always_inline int get_bat (CPUState *env, mmu_ctx_t *ctx,
508 target_ulong virtual, int rw, int type)
509 {
510 target_ulong *BATlt, *BATut, *BATu, *BATl;
511 target_ulong base, BEPIl, BEPIu, bl;
512 int i, valid, prot;
513 int ret = -1;
514
515 LOG_BATS("%s: %cBAT v " ADDRX "\n", __func__,
516 type == ACCESS_CODE ? 'I' : 'D', virtual);
517 switch (type) {
518 case ACCESS_CODE:
519 BATlt = env->IBAT[1];
520 BATut = env->IBAT[0];
521 break;
522 default:
523 BATlt = env->DBAT[1];
524 BATut = env->DBAT[0];
525 break;
526 }
527 base = virtual & 0xFFFC0000;
528 for (i = 0; i < env->nb_BATs; i++) {
529 BATu = &BATut[i];
530 BATl = &BATlt[i];
531 BEPIu = *BATu & 0xF0000000;
532 BEPIl = *BATu & 0x0FFE0000;
533 if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
534 bat_601_size_prot(env, &bl, &valid, &prot, BATu, BATl);
535 } else {
536 bat_size_prot(env, &bl, &valid, &prot, BATu, BATl);
537 }
538 LOG_BATS("%s: %cBAT%d v " ADDRX " BATu " ADDRX
539 " BATl " ADDRX "\n", __func__,
540 type == ACCESS_CODE ? 'I' : 'D', i, virtual, *BATu, *BATl);
541 if ((virtual & 0xF0000000) == BEPIu &&
542 ((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
543 /* BAT matches */
544 if (valid != 0) {
545 /* Get physical address */
546 ctx->raddr = (*BATl & 0xF0000000) |
547 ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
548 (virtual & 0x0001F000);
549 /* Compute access rights */
550 ctx->prot = prot;
551 ret = check_prot(ctx->prot, rw, type);
552 if (ret == 0)
553 LOG_BATS("BAT %d match: r " PADDRX " prot=%c%c\n",
554 i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-',
555 ctx->prot & PAGE_WRITE ? 'W' : '-');
556 break;
557 }
558 }
559 }
560 if (ret < 0) {
561 #if defined(DEBUG_BATS)
562 if (IS_LOGGING) {
563 QEMU_LOG0("no BAT match for " ADDRX ":\n", virtual);
564 for (i = 0; i < 4; i++) {
565 BATu = &BATut[i];
566 BATl = &BATlt[i];
567 BEPIu = *BATu & 0xF0000000;
568 BEPIl = *BATu & 0x0FFE0000;
569 bl = (*BATu & 0x00001FFC) << 15;
570 QEMU_LOG0("%s: %cBAT%d v " ADDRX " BATu " ADDRX
571 " BATl " ADDRX " \n\t" ADDRX " " ADDRX " " ADDRX "\n",
572 __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
573 *BATu, *BATl, BEPIu, BEPIl, bl);
574 }
575 }
576 #endif
577 }
578 /* No hit */
579 return ret;
580 }
581
582 /* PTE table lookup */
583 static always_inline int _find_pte (mmu_ctx_t *ctx, int is_64b, int h,
584 int rw, int type,
585 int target_page_bits)
586 {
587 target_ulong base, pte0, pte1;
588 int i, good = -1;
589 int ret, r;
590
591 ret = -1; /* No entry found */
592 base = ctx->pg_addr[h];
593 for (i = 0; i < 8; i++) {
594 #if defined(TARGET_PPC64)
595 if (is_64b) {
596 pte0 = ldq_phys(base + (i * 16));
597 pte1 = ldq_phys(base + (i * 16) + 8);
598
599 /* We have a TLB that saves 4K pages, so let's
600 * split a huge page to 4k chunks */
601 if (target_page_bits != TARGET_PAGE_BITS)
602 pte1 |= (ctx->eaddr & (( 1 << target_page_bits ) - 1))
603 & TARGET_PAGE_MASK;
604
605 r = pte64_check(ctx, pte0, pte1, h, rw, type);
606 LOG_MMU("Load pte from " ADDRX " => " ADDRX " " ADDRX
607 " %d %d %d " ADDRX "\n",
608 base + (i * 16), pte0, pte1,
609 (int)(pte0 & 1), h, (int)((pte0 >> 1) & 1),
610 ctx->ptem);
611 } else
612 #endif
613 {
614 pte0 = ldl_phys(base + (i * 8));
615 pte1 = ldl_phys(base + (i * 8) + 4);
616 r = pte32_check(ctx, pte0, pte1, h, rw, type);
617 LOG_MMU("Load pte from " ADDRX " => " ADDRX " " ADDRX
618 " %d %d %d " ADDRX "\n",
619 base + (i * 8), pte0, pte1,
620 (int)(pte0 >> 31), h, (int)((pte0 >> 6) & 1),
621 ctx->ptem);
622 }
623 switch (r) {
624 case -3:
625 /* PTE inconsistency */
626 return -1;
627 case -2:
628 /* Access violation */
629 ret = -2;
630 good = i;
631 break;
632 case -1:
633 default:
634 /* No PTE match */
635 break;
636 case 0:
637 /* access granted */
638 /* XXX: we should go on looping to check all PTEs consistency
639 * but if we can speed-up the whole thing as the
640 * result would be undefined if PTEs are not consistent.
641 */
642 ret = 0;
643 good = i;
644 goto done;
645 }
646 }
647 if (good != -1) {
648 done:
649 LOG_MMU("found PTE at addr " PADDRX " prot=%01x ret=%d\n",
650 ctx->raddr, ctx->prot, ret);
651 /* Update page flags */
652 pte1 = ctx->raddr;
653 if (pte_update_flags(ctx, &pte1, ret, rw) == 1) {
654 #if defined(TARGET_PPC64)
655 if (is_64b) {
656 stq_phys_notdirty(base + (good * 16) + 8, pte1);
657 } else
658 #endif
659 {
660 stl_phys_notdirty(base + (good * 8) + 4, pte1);
661 }
662 }
663 }
664
665 return ret;
666 }
667
668 static always_inline int find_pte32 (mmu_ctx_t *ctx, int h, int rw,
669 int type, int target_page_bits)
670 {
671 return _find_pte(ctx, 0, h, rw, type, target_page_bits);
672 }
673
674 #if defined(TARGET_PPC64)
675 static always_inline int find_pte64 (mmu_ctx_t *ctx, int h, int rw,
676 int type, int target_page_bits)
677 {
678 return _find_pte(ctx, 1, h, rw, type, target_page_bits);
679 }
680 #endif
681
682 static always_inline int find_pte (CPUState *env, mmu_ctx_t *ctx,
683 int h, int rw, int type,
684 int target_page_bits)
685 {
686 #if defined(TARGET_PPC64)
687 if (env->mmu_model & POWERPC_MMU_64)
688 return find_pte64(ctx, h, rw, type, target_page_bits);
689 #endif
690
691 return find_pte32(ctx, h, rw, type, target_page_bits);
692 }
693
694 #if defined(TARGET_PPC64)
695 static ppc_slb_t *slb_get_entry(CPUPPCState *env, int nr)
696 {
697 ppc_slb_t *retval = &env->slb[nr];
698
699 #if 0 // XXX implement bridge mode?
700 if (env->spr[SPR_ASR] & 1) {
701 target_phys_addr_t sr_base;
702
703 sr_base = env->spr[SPR_ASR] & 0xfffffffffffff000;
704 sr_base += (12 * nr);
705
706 retval->tmp64 = ldq_phys(sr_base);
707 retval->tmp = ldl_phys(sr_base + 8);
708 }
709 #endif
710
711 return retval;
712 }
713
714 static void slb_set_entry(CPUPPCState *env, int nr, ppc_slb_t *slb)
715 {
716 ppc_slb_t *entry = &env->slb[nr];
717
718 if (slb == entry)
719 return;
720
721 entry->tmp64 = slb->tmp64;
722 entry->tmp = slb->tmp;
723 }
724
725 static always_inline int slb_is_valid (ppc_slb_t *slb)
726 {
727 return (int)(slb->tmp64 & 0x0000000008000000ULL);
728 }
729
730 static always_inline void slb_invalidate (ppc_slb_t *slb)
731 {
732 slb->tmp64 &= ~0x0000000008000000ULL;
733 }
734
735 static always_inline int slb_lookup (CPUPPCState *env, target_ulong eaddr,
736 target_ulong *vsid,
737 target_ulong *page_mask, int *attr,
738 int *target_page_bits)
739 {
740 target_ulong mask;
741 int n, ret;
742
743 ret = -5;
744 LOG_SLB("%s: eaddr " ADDRX "\n", __func__, eaddr);
745 mask = 0x0000000000000000ULL; /* Avoid gcc warning */
746 for (n = 0; n < env->slb_nr; n++) {
747 ppc_slb_t *slb = slb_get_entry(env, n);
748
749 LOG_SLB("%s: seg %d %016" PRIx64 " %08"
750 PRIx32 "\n", __func__, n, slb->tmp64, slb->tmp);
751 if (slb_is_valid(slb)) {
752 /* SLB entry is valid */
753 if (slb->tmp & 0x8) {
754 /* 1 TB Segment */
755 mask = 0xFFFF000000000000ULL;
756 if (target_page_bits)
757 *target_page_bits = 24; // XXX 16M pages?
758 } else {
759 /* 256MB Segment */
760 mask = 0xFFFFFFFFF0000000ULL;
761 if (target_page_bits)
762 *target_page_bits = TARGET_PAGE_BITS;
763 }
764 if ((eaddr & mask) == (slb->tmp64 & mask)) {
765 /* SLB match */
766 *vsid = ((slb->tmp64 << 24) | (slb->tmp >> 8)) & 0x0003FFFFFFFFFFFFULL;
767 *page_mask = ~mask;
768 *attr = slb->tmp & 0xFF;
769 ret = n;
770 break;
771 }
772 }
773 }
774
775 return ret;
776 }
777
778 void ppc_slb_invalidate_all (CPUPPCState *env)
779 {
780 int n, do_invalidate;
781
782 do_invalidate = 0;
783 /* XXX: Warning: slbia never invalidates the first segment */
784 for (n = 1; n < env->slb_nr; n++) {
785 ppc_slb_t *slb = slb_get_entry(env, n);
786
787 if (slb_is_valid(slb)) {
788 slb_invalidate(slb);
789 slb_set_entry(env, n, slb);
790 /* XXX: given the fact that segment size is 256 MB or 1TB,
791 * and we still don't have a tlb_flush_mask(env, n, mask)
792 * in Qemu, we just invalidate all TLBs
793 */
794 do_invalidate = 1;
795 }
796 }
797 if (do_invalidate)
798 tlb_flush(env, 1);
799 }
800
801 void ppc_slb_invalidate_one (CPUPPCState *env, uint64_t T0)
802 {
803 target_ulong vsid, page_mask;
804 int attr;
805 int n;
806
807 n = slb_lookup(env, T0, &vsid, &page_mask, &attr, NULL);
808 if (n >= 0) {
809 ppc_slb_t *slb = slb_get_entry(env, n);
810
811 if (slb_is_valid(slb)) {
812 slb_invalidate(slb);
813 slb_set_entry(env, n, slb);
814 /* XXX: given the fact that segment size is 256 MB or 1TB,
815 * and we still don't have a tlb_flush_mask(env, n, mask)
816 * in Qemu, we just invalidate all TLBs
817 */
818 tlb_flush(env, 1);
819 }
820 }
821 }
822
823 target_ulong ppc_load_slb (CPUPPCState *env, int slb_nr)
824 {
825 target_ulong rt;
826 ppc_slb_t *slb = slb_get_entry(env, slb_nr);
827
828 if (slb_is_valid(slb)) {
829 /* SLB entry is valid */
830 /* Copy SLB bits 62:88 to Rt 37:63 (VSID 23:49) */
831 rt = slb->tmp >> 8; /* 65:88 => 40:63 */
832 rt |= (slb->tmp64 & 0x7) << 24; /* 62:64 => 37:39 */
833 /* Copy SLB bits 89:92 to Rt 33:36 (KsKpNL) */
834 rt |= ((slb->tmp >> 4) & 0xF) << 27;
835 } else {
836 rt = 0;
837 }
838 LOG_SLB("%s: %016" PRIx64 " %08" PRIx32 " => %d "
839 ADDRX "\n", __func__, slb->tmp64, slb->tmp, slb_nr, rt);
840
841 return rt;
842 }
843
844 void ppc_store_slb (CPUPPCState *env, target_ulong rb, target_ulong rs)
845 {
846 ppc_slb_t *slb;
847
848 uint64_t vsid;
849 uint64_t esid;
850 int flags, valid, slb_nr;
851
852 vsid = rs >> 12;
853 flags = ((rs >> 8) & 0xf);
854
855 esid = rb >> 28;
856 valid = (rb & (1 << 27));
857 slb_nr = rb & 0xfff;
858
859 slb = slb_get_entry(env, slb_nr);
860 slb->tmp64 = (esid << 28) | valid | (vsid >> 24);
861 slb->tmp = (vsid << 8) | (flags << 3);
862
863 LOG_SLB("%s: %d " ADDRX " - " ADDRX " => %016" PRIx64
864 " %08" PRIx32 "\n", __func__,
865 slb_nr, rb, rs, tmp64, tmp);
866
867 slb_set_entry(env, slb_nr, slb);
868 }
869 #endif /* defined(TARGET_PPC64) */
870
871 /* Perform segment based translation */
872 static always_inline target_phys_addr_t get_pgaddr (target_phys_addr_t sdr1,
873 int sdr_sh,
874 target_phys_addr_t hash,
875 target_phys_addr_t mask)
876 {
877 return (sdr1 & ((target_phys_addr_t)(-1ULL) << sdr_sh)) | (hash & mask);
878 }
879
880 static always_inline int get_segment (CPUState *env, mmu_ctx_t *ctx,
881 target_ulong eaddr, int rw, int type)
882 {
883 target_phys_addr_t sdr, hash, mask, sdr_mask, htab_mask;
884 target_ulong sr, vsid, vsid_mask, pgidx, page_mask;
885 #if defined(TARGET_PPC64)
886 int attr;
887 #endif
888 int ds, vsid_sh, sdr_sh, pr, target_page_bits;
889 int ret, ret2;
890
891 pr = msr_pr;
892 #if defined(TARGET_PPC64)
893 if (env->mmu_model & POWERPC_MMU_64) {
894 LOG_MMU("Check SLBs\n");
895 ret = slb_lookup(env, eaddr, &vsid, &page_mask, &attr,
896 &target_page_bits);
897 if (ret < 0)
898 return ret;
899 ctx->key = ((attr & 0x40) && (pr != 0)) ||
900 ((attr & 0x80) && (pr == 0)) ? 1 : 0;
901 ds = 0;
902 ctx->nx = attr & 0x10 ? 1 : 0;
903 ctx->eaddr = eaddr;
904 vsid_mask = 0x00003FFFFFFFFF80ULL;
905 vsid_sh = 7;
906 sdr_sh = 18;
907 sdr_mask = 0x3FF80;
908 } else
909 #endif /* defined(TARGET_PPC64) */
910 {
911 sr = env->sr[eaddr >> 28];
912 page_mask = 0x0FFFFFFF;
913 ctx->key = (((sr & 0x20000000) && (pr != 0)) ||
914 ((sr & 0x40000000) && (pr == 0))) ? 1 : 0;
915 ds = sr & 0x80000000 ? 1 : 0;
916 ctx->nx = sr & 0x10000000 ? 1 : 0;
917 vsid = sr & 0x00FFFFFF;
918 vsid_mask = 0x01FFFFC0;
919 vsid_sh = 6;
920 sdr_sh = 16;
921 sdr_mask = 0xFFC0;
922 target_page_bits = TARGET_PAGE_BITS;
923 LOG_MMU("Check segment v=" ADDRX " %d " ADDRX
924 " nip=" ADDRX " lr=" ADDRX " ir=%d dr=%d pr=%d %d t=%d\n",
925 eaddr, (int)(eaddr >> 28), sr, env->nip,
926 env->lr, (int)msr_ir, (int)msr_dr, pr != 0 ? 1 : 0,
927 rw, type);
928 }
929 LOG_MMU("pte segment: key=%d ds %d nx %d vsid " ADDRX "\n",
930 ctx->key, ds, ctx->nx, vsid);
931 ret = -1;
932 if (!ds) {
933 /* Check if instruction fetch is allowed, if needed */
934 if (type != ACCESS_CODE || ctx->nx == 0) {
935 /* Page address translation */
936 /* Primary table address */
937 sdr = env->sdr1;
938 pgidx = (eaddr & page_mask) >> target_page_bits;
939 #if defined(TARGET_PPC64)
940 if (env->mmu_model & POWERPC_MMU_64) {
941 htab_mask = 0x0FFFFFFF >> (28 - (sdr & 0x1F));
942 /* XXX: this is false for 1 TB segments */
943 hash = ((vsid ^ pgidx) << vsid_sh) & vsid_mask;
944 } else
945 #endif
946 {
947 htab_mask = sdr & 0x000001FF;
948 hash = ((vsid ^ pgidx) << vsid_sh) & vsid_mask;
949 }
950 mask = (htab_mask << sdr_sh) | sdr_mask;
951 LOG_MMU("sdr " PADDRX " sh %d hash " PADDRX
952 " mask " PADDRX " " ADDRX "\n",
953 sdr, sdr_sh, hash, mask, page_mask);
954 ctx->pg_addr[0] = get_pgaddr(sdr, sdr_sh, hash, mask);
955 /* Secondary table address */
956 hash = (~hash) & vsid_mask;
957 LOG_MMU("sdr " PADDRX " sh %d hash " PADDRX
958 " mask " PADDRX "\n",
959 sdr, sdr_sh, hash, mask);
960 ctx->pg_addr[1] = get_pgaddr(sdr, sdr_sh, hash, mask);
961 #if defined(TARGET_PPC64)
962 if (env->mmu_model & POWERPC_MMU_64) {
963 /* Only 5 bits of the page index are used in the AVPN */
964 if (target_page_bits > 23) {
965 ctx->ptem = (vsid << 12) |
966 ((pgidx << (target_page_bits - 16)) & 0xF80);
967 } else {
968 ctx->ptem = (vsid << 12) | ((pgidx >> 4) & 0x0F80);
969 }
970 } else
971 #endif
972 {
973 ctx->ptem = (vsid << 7) | (pgidx >> 10);
974 }
975 /* Initialize real address with an invalid value */
976 ctx->raddr = (target_phys_addr_t)-1ULL;
977 if (unlikely(env->mmu_model == POWERPC_MMU_SOFT_6xx ||
978 env->mmu_model == POWERPC_MMU_SOFT_74xx)) {
979 /* Software TLB search */
980 ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type);
981 } else {
982 LOG_MMU("0 sdr1=" PADDRX " vsid=" ADDRX " "
983 "api=" ADDRX " hash=" PADDRX
984 " pg_addr=" PADDRX "\n",
985 sdr, vsid, pgidx, hash, ctx->pg_addr[0]);
986 /* Primary table lookup */
987 ret = find_pte(env, ctx, 0, rw, type, target_page_bits);
988 if (ret < 0) {
989 /* Secondary table lookup */
990 if (eaddr != 0xEFFFFFFF)
991 LOG_MMU("1 sdr1=" PADDRX " vsid=" ADDRX " "
992 "api=" ADDRX " hash=" PADDRX
993 " pg_addr=" PADDRX "\n",
994 sdr, vsid, pgidx, hash, ctx->pg_addr[1]);
995 ret2 = find_pte(env, ctx, 1, rw, type,
996 target_page_bits);
997 if (ret2 != -1)
998 ret = ret2;
999 }
1000 }
1001 #if defined (DUMP_PAGE_TABLES)
1002 if (qemu_log_enabled()) {
1003 target_phys_addr_t curaddr;
1004 uint32_t a0, a1, a2, a3;
1005 qemu_log("Page table: " PADDRX " len " PADDRX "\n",
1006 sdr, mask + 0x80);
1007 for (curaddr = sdr; curaddr < (sdr + mask + 0x80);
1008 curaddr += 16) {
1009 a0 = ldl_phys(curaddr);
1010 a1 = ldl_phys(curaddr + 4);
1011 a2 = ldl_phys(curaddr + 8);
1012 a3 = ldl_phys(curaddr + 12);
1013 if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) {
1014 qemu_log(PADDRX ": %08x %08x %08x %08x\n",
1015 curaddr, a0, a1, a2, a3);
1016 }
1017 }
1018 }
1019 #endif
1020 } else {
1021 LOG_MMU("No access allowed\n");
1022 ret = -3;
1023 }
1024 } else {
1025 LOG_MMU("direct store...\n");
1026 /* Direct-store segment : absolutely *BUGGY* for now */
1027 switch (type) {
1028 case ACCESS_INT:
1029 /* Integer load/store : only access allowed */
1030 break;
1031 case ACCESS_CODE:
1032 /* No code fetch is allowed in direct-store areas */
1033 return -4;
1034 case ACCESS_FLOAT:
1035 /* Floating point load/store */
1036 return -4;
1037 case ACCESS_RES:
1038 /* lwarx, ldarx or srwcx. */
1039 return -4;
1040 case ACCESS_CACHE:
1041 /* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
1042 /* Should make the instruction do no-op.
1043 * As it already do no-op, it's quite easy :-)
1044 */
1045 ctx->raddr = eaddr;
1046 return 0;
1047 case ACCESS_EXT:
1048 /* eciwx or ecowx */
1049 return -4;
1050 default:
1051 qemu_log("ERROR: instruction should not need "
1052 "address translation\n");
1053 return -4;
1054 }
1055 if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) {
1056 ctx->raddr = eaddr;
1057 ret = 2;
1058 } else {
1059 ret = -2;
1060 }
1061 }
1062
1063 return ret;
1064 }
1065
1066 /* Generic TLB check function for embedded PowerPC implementations */
1067 static always_inline int ppcemb_tlb_check (CPUState *env, ppcemb_tlb_t *tlb,
1068 target_phys_addr_t *raddrp,
1069 target_ulong address,
1070 uint32_t pid, int ext, int i)
1071 {
1072 target_ulong mask;
1073
1074 /* Check valid flag */
1075 if (!(tlb->prot & PAGE_VALID)) {
1076 qemu_log("%s: TLB %d not valid\n", __func__, i);
1077 return -1;
1078 }
1079 mask = ~(tlb->size - 1);
1080 LOG_SWTLB("%s: TLB %d address " ADDRX " PID %u <=> " ADDRX
1081 " " ADDRX " %u\n",
1082 __func__, i, address, pid, tlb->EPN, mask, (uint32_t)tlb->PID);
1083 /* Check PID */
1084 if (tlb->PID != 0 && tlb->PID != pid)
1085 return -1;
1086 /* Check effective address */
1087 if ((address & mask) != tlb->EPN)
1088 return -1;
1089 *raddrp = (tlb->RPN & mask) | (address & ~mask);
1090 #if (TARGET_PHYS_ADDR_BITS >= 36)
1091 if (ext) {
1092 /* Extend the physical address to 36 bits */
1093 *raddrp |= (target_phys_addr_t)(tlb->RPN & 0xF) << 32;
1094 }
1095 #endif
1096
1097 return 0;
1098 }
1099
1100 /* Generic TLB search function for PowerPC embedded implementations */
1101 int ppcemb_tlb_search (CPUPPCState *env, target_ulong address, uint32_t pid)
1102 {
1103 ppcemb_tlb_t *tlb;
1104 target_phys_addr_t raddr;
1105 int i, ret;
1106
1107 /* Default return value is no match */
1108 ret = -1;
1109 for (i = 0; i < env->nb_tlb; i++) {
1110 tlb = &env->tlb[i].tlbe;
1111 if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) {
1112 ret = i;
1113 break;
1114 }
1115 }
1116
1117 return ret;
1118 }
1119
1120 /* Helpers specific to PowerPC 40x implementations */
1121 static always_inline void ppc4xx_tlb_invalidate_all (CPUState *env)
1122 {
1123 ppcemb_tlb_t *tlb;
1124 int i;
1125
1126 for (i = 0; i < env->nb_tlb; i++) {
1127 tlb = &env->tlb[i].tlbe;
1128 tlb->prot &= ~PAGE_VALID;
1129 }
1130 tlb_flush(env, 1);
1131 }
1132
1133 static always_inline void ppc4xx_tlb_invalidate_virt (CPUState *env,
1134 target_ulong eaddr,
1135 uint32_t pid)
1136 {
1137 #if !defined(FLUSH_ALL_TLBS)
1138 ppcemb_tlb_t *tlb;
1139 target_phys_addr_t raddr;
1140 target_ulong page, end;
1141 int i;
1142
1143 for (i = 0; i < env->nb_tlb; i++) {
1144 tlb = &env->tlb[i].tlbe;
1145 if (ppcemb_tlb_check(env, tlb, &raddr, eaddr, pid, 0, i) == 0) {
1146 end = tlb->EPN + tlb->size;
1147 for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE)
1148 tlb_flush_page(env, page);
1149 tlb->prot &= ~PAGE_VALID;
1150 break;
1151 }
1152 }
1153 #else
1154 ppc4xx_tlb_invalidate_all(env);
1155 #endif
1156 }
1157
1158 static int mmu40x_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
1159 target_ulong address, int rw, int access_type)
1160 {
1161 ppcemb_tlb_t *tlb;
1162 target_phys_addr_t raddr;
1163 int i, ret, zsel, zpr, pr;
1164
1165 ret = -1;
1166 raddr = (target_phys_addr_t)-1ULL;
1167 pr = msr_pr;
1168 for (i = 0; i < env->nb_tlb; i++) {
1169 tlb = &env->tlb[i].tlbe;
1170 if (ppcemb_tlb_check(env, tlb, &raddr, address,
1171 env->spr[SPR_40x_PID], 0, i) < 0)
1172 continue;
1173 zsel = (tlb->attr >> 4) & 0xF;
1174 zpr = (env->spr[SPR_40x_ZPR] >> (28 - (2 * zsel))) & 0x3;
1175 LOG_SWTLB("%s: TLB %d zsel %d zpr %d rw %d attr %08x\n",
1176 __func__, i, zsel, zpr, rw, tlb->attr);
1177 /* Check execute enable bit */
1178 switch (zpr) {
1179 case 0x2:
1180 if (pr != 0)
1181 goto check_perms;
1182 /* No break here */
1183 case 0x3:
1184 /* All accesses granted */
1185 ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
1186 ret = 0;
1187 break;
1188 case 0x0:
1189 if (pr != 0) {
1190 ctx->prot = 0;
1191 ret = -2;
1192 break;
1193 }
1194 /* No break here */
1195 case 0x1:
1196 check_perms:
1197 /* Check from TLB entry */
1198 /* XXX: there is a problem here or in the TLB fill code... */
1199 ctx->prot = tlb->prot;
1200 ctx->prot |= PAGE_EXEC;
1201 ret = check_prot(ctx->prot, rw, access_type);
1202 break;
1203 }
1204 if (ret >= 0) {
1205 ctx->raddr = raddr;
1206 LOG_SWTLB("%s: access granted " ADDRX " => " PADDRX
1207 " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
1208 ret);
1209 return 0;
1210 }
1211 }
1212 LOG_SWTLB("%s: access refused " ADDRX " => " PADDRX
1213 " %d %d\n", __func__, address, raddr, ctx->prot,
1214 ret);
1215
1216 return ret;
1217 }
1218
1219 void store_40x_sler (CPUPPCState *env, uint32_t val)
1220 {
1221 /* XXX: TO BE FIXED */
1222 if (val != 0x00000000) {
1223 cpu_abort(env, "Little-endian regions are not supported by now\n");
1224 }
1225 env->spr[SPR_405_SLER] = val;
1226 }
1227
1228 static int mmubooke_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
1229 target_ulong address, int rw,
1230 int access_type)
1231 {
1232 ppcemb_tlb_t *tlb;
1233 target_phys_addr_t raddr;
1234 int i, prot, ret;
1235
1236 ret = -1;
1237 raddr = (target_phys_addr_t)-1ULL;
1238 for (i = 0; i < env->nb_tlb; i++) {
1239 tlb = &env->tlb[i].tlbe;
1240 if (ppcemb_tlb_check(env, tlb, &raddr, address,
1241 env->spr[SPR_BOOKE_PID], 1, i) < 0)
1242 continue;
1243 if (msr_pr != 0)
1244 prot = tlb->prot & 0xF;
1245 else
1246 prot = (tlb->prot >> 4) & 0xF;
1247 /* Check the address space */
1248 if (access_type == ACCESS_CODE) {
1249 if (msr_ir != (tlb->attr & 1))
1250 continue;
1251 ctx->prot = prot;
1252 if (prot & PAGE_EXEC) {
1253 ret = 0;
1254 break;
1255 }
1256 ret = -3;
1257 } else {
1258 if (msr_dr != (tlb->attr & 1))
1259 continue;
1260 ctx->prot = prot;
1261 if ((!rw && prot & PAGE_READ) || (rw && (prot & PAGE_WRITE))) {
1262 ret = 0;
1263 break;
1264 }
1265 ret = -2;
1266 }
1267 }
1268 if (ret >= 0)
1269 ctx->raddr = raddr;
1270
1271 return ret;
1272 }
1273
1274 static always_inline int check_physical (CPUState *env, mmu_ctx_t *ctx,
1275 target_ulong eaddr, int rw)
1276 {
1277 int in_plb, ret;
1278
1279 ctx->raddr = eaddr;
1280 ctx->prot = PAGE_READ | PAGE_EXEC;
1281 ret = 0;
1282 switch (env->mmu_model) {
1283 case POWERPC_MMU_32B:
1284 case POWERPC_MMU_601:
1285 case POWERPC_MMU_SOFT_6xx:
1286 case POWERPC_MMU_SOFT_74xx:
1287 case POWERPC_MMU_SOFT_4xx:
1288 case POWERPC_MMU_REAL:
1289 case POWERPC_MMU_BOOKE:
1290 ctx->prot |= PAGE_WRITE;
1291 break;
1292 #if defined(TARGET_PPC64)
1293 case POWERPC_MMU_620:
1294 case POWERPC_MMU_64B:
1295 /* Real address are 60 bits long */
1296 ctx->raddr &= 0x0FFFFFFFFFFFFFFFULL;
1297 ctx->prot |= PAGE_WRITE;
1298 break;
1299 #endif
1300 case POWERPC_MMU_SOFT_4xx_Z:
1301 if (unlikely(msr_pe != 0)) {
1302 /* 403 family add some particular protections,
1303 * using PBL/PBU registers for accesses with no translation.
1304 */
1305 in_plb =
1306 /* Check PLB validity */
1307 (env->pb[0] < env->pb[1] &&
1308 /* and address in plb area */
1309 eaddr >= env->pb[0] && eaddr < env->pb[1]) ||
1310 (env->pb[2] < env->pb[3] &&
1311 eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0;
1312 if (in_plb ^ msr_px) {
1313 /* Access in protected area */
1314 if (rw == 1) {
1315 /* Access is not allowed */
1316 ret = -2;
1317 }
1318 } else {
1319 /* Read-write access is allowed */
1320 ctx->prot |= PAGE_WRITE;
1321 }
1322 }
1323 break;
1324 case POWERPC_MMU_MPC8xx:
1325 /* XXX: TODO */
1326 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1327 break;
1328 case POWERPC_MMU_BOOKE_FSL:
1329 /* XXX: TODO */
1330 cpu_abort(env, "BookE FSL MMU model not implemented\n");
1331 break;
1332 default:
1333 cpu_abort(env, "Unknown or invalid MMU model\n");
1334 return -1;
1335 }
1336
1337 return ret;
1338 }
1339
1340 int get_physical_address (CPUState *env, mmu_ctx_t *ctx, target_ulong eaddr,
1341 int rw, int access_type)
1342 {
1343 int ret;
1344
1345 #if 0
1346 qemu_log("%s\n", __func__);
1347 #endif
1348 if ((access_type == ACCESS_CODE && msr_ir == 0) ||
1349 (access_type != ACCESS_CODE && msr_dr == 0)) {
1350 /* No address translation */
1351 ret = check_physical(env, ctx, eaddr, rw);
1352 } else {
1353 ret = -1;
1354 switch (env->mmu_model) {
1355 case POWERPC_MMU_32B:
1356 case POWERPC_MMU_601:
1357 case POWERPC_MMU_SOFT_6xx:
1358 case POWERPC_MMU_SOFT_74xx:
1359 /* Try to find a BAT */
1360 if (env->nb_BATs != 0)
1361 ret = get_bat(env, ctx, eaddr, rw, access_type);
1362 #if defined(TARGET_PPC64)
1363 case POWERPC_MMU_620:
1364 case POWERPC_MMU_64B:
1365 #endif
1366 if (ret < 0) {
1367 /* We didn't match any BAT entry or don't have BATs */
1368 ret = get_segment(env, ctx, eaddr, rw, access_type);
1369 }
1370 break;
1371 case POWERPC_MMU_SOFT_4xx:
1372 case POWERPC_MMU_SOFT_4xx_Z:
1373 ret = mmu40x_get_physical_address(env, ctx, eaddr,
1374 rw, access_type);
1375 break;
1376 case POWERPC_MMU_BOOKE:
1377 ret = mmubooke_get_physical_address(env, ctx, eaddr,
1378 rw, access_type);
1379 break;
1380 case POWERPC_MMU_MPC8xx:
1381 /* XXX: TODO */
1382 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1383 break;
1384 case POWERPC_MMU_BOOKE_FSL:
1385 /* XXX: TODO */
1386 cpu_abort(env, "BookE FSL MMU model not implemented\n");
1387 return -1;
1388 case POWERPC_MMU_REAL:
1389 cpu_abort(env, "PowerPC in real mode do not do any translation\n");
1390 return -1;
1391 default:
1392 cpu_abort(env, "Unknown or invalid MMU model\n");
1393 return -1;
1394 }
1395 }
1396 #if 0
1397 qemu_log("%s address " ADDRX " => %d " PADDRX "\n",
1398 __func__, eaddr, ret, ctx->raddr);
1399 #endif
1400
1401 return ret;
1402 }
1403
1404 target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
1405 {
1406 mmu_ctx_t ctx;
1407
1408 if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT) != 0))
1409 return -1;
1410
1411 return ctx.raddr & TARGET_PAGE_MASK;
1412 }
1413
1414 /* Perform address translation */
1415 int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
1416 int mmu_idx, int is_softmmu)
1417 {
1418 mmu_ctx_t ctx;
1419 int access_type;
1420 int ret = 0;
1421
1422 if (rw == 2) {
1423 /* code access */
1424 rw = 0;
1425 access_type = ACCESS_CODE;
1426 } else {
1427 /* data access */
1428 access_type = env->access_type;
1429 }
1430 ret = get_physical_address(env, &ctx, address, rw, access_type);
1431 if (ret == 0) {
1432 ret = tlb_set_page_exec(env, address & TARGET_PAGE_MASK,
1433 ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
1434 mmu_idx, is_softmmu);
1435 } else if (ret < 0) {
1436 LOG_MMU_STATE(env);
1437 if (access_type == ACCESS_CODE) {
1438 switch (ret) {
1439 case -1:
1440 /* No matches in page tables or TLB */
1441 switch (env->mmu_model) {
1442 case POWERPC_MMU_SOFT_6xx:
1443 env->exception_index = POWERPC_EXCP_IFTLB;
1444 env->error_code = 1 << 18;
1445 env->spr[SPR_IMISS] = address;
1446 env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
1447 goto tlb_miss;
1448 case POWERPC_MMU_SOFT_74xx:
1449 env->exception_index = POWERPC_EXCP_IFTLB;
1450 goto tlb_miss_74xx;
1451 case POWERPC_MMU_SOFT_4xx:
1452 case POWERPC_MMU_SOFT_4xx_Z:
1453 env->exception_index = POWERPC_EXCP_ITLB;
1454 env->error_code = 0;
1455 env->spr[SPR_40x_DEAR] = address;
1456 env->spr[SPR_40x_ESR] = 0x00000000;
1457 break;
1458 case POWERPC_MMU_32B:
1459 case POWERPC_MMU_601:
1460 #if defined(TARGET_PPC64)
1461 case POWERPC_MMU_620:
1462 case POWERPC_MMU_64B:
1463 #endif
1464 env->exception_index = POWERPC_EXCP_ISI;
1465 env->error_code = 0x40000000;
1466 break;
1467 case POWERPC_MMU_BOOKE:
1468 /* XXX: TODO */
1469 cpu_abort(env, "BookE MMU model is not implemented\n");
1470 return -1;
1471 case POWERPC_MMU_BOOKE_FSL:
1472 /* XXX: TODO */
1473 cpu_abort(env, "BookE FSL MMU model is not implemented\n");
1474 return -1;
1475 case POWERPC_MMU_MPC8xx:
1476 /* XXX: TODO */
1477 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1478 break;
1479 case POWERPC_MMU_REAL:
1480 cpu_abort(env, "PowerPC in real mode should never raise "
1481 "any MMU exceptions\n");
1482 return -1;
1483 default:
1484 cpu_abort(env, "Unknown or invalid MMU model\n");
1485 return -1;
1486 }
1487 break;
1488 case -2:
1489 /* Access rights violation */
1490 env->exception_index = POWERPC_EXCP_ISI;
1491 env->error_code = 0x08000000;
1492 break;
1493 case -3:
1494 /* No execute protection violation */
1495 env->exception_index = POWERPC_EXCP_ISI;
1496 env->error_code = 0x10000000;
1497 break;
1498 case -4:
1499 /* Direct store exception */
1500 /* No code fetch is allowed in direct-store areas */
1501 env->exception_index = POWERPC_EXCP_ISI;
1502 env->error_code = 0x10000000;
1503 break;
1504 #if defined(TARGET_PPC64)
1505 case -5:
1506 /* No match in segment table */
1507 if (env->mmu_model == POWERPC_MMU_620) {
1508 env->exception_index = POWERPC_EXCP_ISI;
1509 /* XXX: this might be incorrect */
1510 env->error_code = 0x40000000;
1511 } else {
1512 env->exception_index = POWERPC_EXCP_ISEG;
1513 env->error_code = 0;
1514 }
1515 break;
1516 #endif
1517 }
1518 } else {
1519 switch (ret) {
1520 case -1:
1521 /* No matches in page tables or TLB */
1522 switch (env->mmu_model) {
1523 case POWERPC_MMU_SOFT_6xx:
1524 if (rw == 1) {
1525 env->exception_index = POWERPC_EXCP_DSTLB;
1526 env->error_code = 1 << 16;
1527 } else {
1528 env->exception_index = POWERPC_EXCP_DLTLB;
1529 env->error_code = 0;
1530 }
1531 env->spr[SPR_DMISS] = address;
1532 env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
1533 tlb_miss:
1534 env->error_code |= ctx.key << 19;
1535 env->spr[SPR_HASH1] = ctx.pg_addr[0];
1536 env->spr[SPR_HASH2] = ctx.pg_addr[1];
1537 break;
1538 case POWERPC_MMU_SOFT_74xx:
1539 if (rw == 1) {
1540 env->exception_index = POWERPC_EXCP_DSTLB;
1541 } else {
1542 env->exception_index = POWERPC_EXCP_DLTLB;
1543 }
1544 tlb_miss_74xx:
1545 /* Implement LRU algorithm */
1546 env->error_code = ctx.key << 19;
1547 env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) |
1548 ((env->last_way + 1) & (env->nb_ways - 1));
1549 env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem;
1550 break;
1551 case POWERPC_MMU_SOFT_4xx:
1552 case POWERPC_MMU_SOFT_4xx_Z:
1553 env->exception_index = POWERPC_EXCP_DTLB;
1554 env->error_code = 0;
1555 env->spr[SPR_40x_DEAR] = address;
1556 if (rw)
1557 env->spr[SPR_40x_ESR] = 0x00800000;
1558 else
1559 env->spr[SPR_40x_ESR] = 0x00000000;
1560 break;
1561 case POWERPC_MMU_32B:
1562 case POWERPC_MMU_601:
1563 #if defined(TARGET_PPC64)
1564 case POWERPC_MMU_620:
1565 case POWERPC_MMU_64B:
1566 #endif
1567 env->exception_index = POWERPC_EXCP_DSI;
1568 env->error_code = 0;
1569 env->spr[SPR_DAR] = address;
1570 if (rw == 1)
1571 env->spr[SPR_DSISR] = 0x42000000;
1572 else
1573 env->spr[SPR_DSISR] = 0x40000000;
1574 break;
1575 case POWERPC_MMU_MPC8xx:
1576 /* XXX: TODO */
1577 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1578 break;
1579 case POWERPC_MMU_BOOKE:
1580 /* XXX: TODO */
1581 cpu_abort(env, "BookE MMU model is not implemented\n");
1582 return -1;
1583 case POWERPC_MMU_BOOKE_FSL:
1584 /* XXX: TODO */
1585 cpu_abort(env, "BookE FSL MMU model is not implemented\n");
1586 return -1;
1587 case POWERPC_MMU_REAL:
1588 cpu_abort(env, "PowerPC in real mode should never raise "
1589 "any MMU exceptions\n");
1590 return -1;
1591 default:
1592 cpu_abort(env, "Unknown or invalid MMU model\n");
1593 return -1;
1594 }
1595 break;
1596 case -2:
1597 /* Access rights violation */
1598 env->exception_index = POWERPC_EXCP_DSI;
1599 env->error_code = 0;
1600 env->spr[SPR_DAR] = address;
1601 if (rw == 1)
1602 env->spr[SPR_DSISR] = 0x0A000000;
1603 else
1604 env->spr[SPR_DSISR] = 0x08000000;
1605 break;
1606 case -4:
1607 /* Direct store exception */
1608 switch (access_type) {
1609 case ACCESS_FLOAT:
1610 /* Floating point load/store */
1611 env->exception_index = POWERPC_EXCP_ALIGN;
1612 env->error_code = POWERPC_EXCP_ALIGN_FP;
1613 env->spr[SPR_DAR] = address;
1614 break;
1615 case ACCESS_RES:
1616 /* lwarx, ldarx or stwcx. */
1617 env->exception_index = POWERPC_EXCP_DSI;
1618 env->error_code = 0;
1619 env->spr[SPR_DAR] = address;
1620 if (rw == 1)
1621 env->spr[SPR_DSISR] = 0x06000000;
1622 else
1623 env->spr[SPR_DSISR] = 0x04000000;
1624 break;
1625 case ACCESS_EXT:
1626 /* eciwx or ecowx */
1627 env->exception_index = POWERPC_EXCP_DSI;
1628 env->error_code = 0;
1629 env->spr[SPR_DAR] = address;
1630 if (rw == 1)
1631 env->spr[SPR_DSISR] = 0x06100000;
1632 else
1633 env->spr[SPR_DSISR] = 0x04100000;
1634 break;
1635 default:
1636 printf("DSI: invalid exception (%d)\n", ret);
1637 env->exception_index = POWERPC_EXCP_PROGRAM;
1638 env->error_code =
1639 POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
1640 env->spr[SPR_DAR] = address;
1641 break;
1642 }
1643 break;
1644 #if defined(TARGET_PPC64)
1645 case -5:
1646 /* No match in segment table */
1647 if (env->mmu_model == POWERPC_MMU_620) {
1648 env->exception_index = POWERPC_EXCP_DSI;
1649 env->error_code = 0;
1650 env->spr[SPR_DAR] = address;
1651 /* XXX: this might be incorrect */
1652 if (rw == 1)
1653 env->spr[SPR_DSISR] = 0x42000000;
1654 else
1655 env->spr[SPR_DSISR] = 0x40000000;
1656 } else {
1657 env->exception_index = POWERPC_EXCP_DSEG;
1658 env->error_code = 0;
1659 env->spr[SPR_DAR] = address;
1660 }
1661 break;
1662 #endif
1663 }
1664 }
1665 #if 0
1666 printf("%s: set exception to %d %02x\n", __func__,
1667 env->exception, env->error_code);
1668 #endif
1669 ret = 1;
1670 }
1671
1672 return ret;
1673 }
1674
1675 /*****************************************************************************/
1676 /* BATs management */
1677 #if !defined(FLUSH_ALL_TLBS)
1678 static always_inline void do_invalidate_BAT (CPUPPCState *env,
1679 target_ulong BATu,
1680 target_ulong mask)
1681 {
1682 target_ulong base, end, page;
1683
1684 base = BATu & ~0x0001FFFF;
1685 end = base + mask + 0x00020000;
1686 LOG_BATS("Flush BAT from " ADDRX " to " ADDRX " (" ADDRX ")\n",
1687 base, end, mask);
1688 for (page = base; page != end; page += TARGET_PAGE_SIZE)
1689 tlb_flush_page(env, page);
1690 LOG_BATS("Flush done\n");
1691 }
1692 #endif
1693
1694 static always_inline void dump_store_bat (CPUPPCState *env, char ID,
1695 int ul, int nr, target_ulong value)
1696 {
1697 LOG_BATS("Set %cBAT%d%c to " ADDRX " (" ADDRX ")\n",
1698 ID, nr, ul == 0 ? 'u' : 'l', value, env->nip);
1699 }
1700
1701 void ppc_store_ibatu (CPUPPCState *env, int nr, target_ulong value)
1702 {
1703 target_ulong mask;
1704
1705 dump_store_bat(env, 'I', 0, nr, value);
1706 if (env->IBAT[0][nr] != value) {
1707 mask = (value << 15) & 0x0FFE0000UL;
1708 #if !defined(FLUSH_ALL_TLBS)
1709 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1710 #endif
1711 /* When storing valid upper BAT, mask BEPI and BRPN
1712 * and invalidate all TLBs covered by this BAT
1713 */
1714 mask = (value << 15) & 0x0FFE0000UL;
1715 env->IBAT[0][nr] = (value & 0x00001FFFUL) |
1716 (value & ~0x0001FFFFUL & ~mask);
1717 env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) |
1718 (env->IBAT[1][nr] & ~0x0001FFFF & ~mask);
1719 #if !defined(FLUSH_ALL_TLBS)
1720 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1721 #else
1722 tlb_flush(env, 1);
1723 #endif
1724 }
1725 }
1726
1727 void ppc_store_ibatl (CPUPPCState *env, int nr, target_ulong value)
1728 {
1729 dump_store_bat(env, 'I', 1, nr, value);
1730 env->IBAT[1][nr] = value;
1731 }
1732
1733 void ppc_store_dbatu (CPUPPCState *env, int nr, target_ulong value)
1734 {
1735 target_ulong mask;
1736
1737 dump_store_bat(env, 'D', 0, nr, value);
1738 if (env->DBAT[0][nr] != value) {
1739 /* When storing valid upper BAT, mask BEPI and BRPN
1740 * and invalidate all TLBs covered by this BAT
1741 */
1742 mask = (value << 15) & 0x0FFE0000UL;
1743 #if !defined(FLUSH_ALL_TLBS)
1744 do_invalidate_BAT(env, env->DBAT[0][nr], mask);
1745 #endif
1746 mask = (value << 15) & 0x0FFE0000UL;
1747 env->DBAT[0][nr] = (value & 0x00001FFFUL) |
1748 (value & ~0x0001FFFFUL & ~mask);
1749 env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) |
1750 (env->DBAT[1][nr] & ~0x0001FFFF & ~mask);
1751 #if !defined(FLUSH_ALL_TLBS)
1752 do_invalidate_BAT(env, env->DBAT[0][nr], mask);
1753 #else
1754 tlb_flush(env, 1);
1755 #endif
1756 }
1757 }
1758
1759 void ppc_store_dbatl (CPUPPCState *env, int nr, target_ulong value)
1760 {
1761 dump_store_bat(env, 'D', 1, nr, value);
1762 env->DBAT[1][nr] = value;
1763 }
1764
1765 void ppc_store_ibatu_601 (CPUPPCState *env, int nr, target_ulong value)
1766 {
1767 target_ulong mask;
1768 int do_inval;
1769
1770 dump_store_bat(env, 'I', 0, nr, value);
1771 if (env->IBAT[0][nr] != value) {
1772 do_inval = 0;
1773 mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
1774 if (env->IBAT[1][nr] & 0x40) {
1775 /* Invalidate BAT only if it is valid */
1776 #if !defined(FLUSH_ALL_TLBS)
1777 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1778 #else
1779 do_inval = 1;
1780 #endif
1781 }
1782 /* When storing valid upper BAT, mask BEPI and BRPN
1783 * and invalidate all TLBs covered by this BAT
1784 */
1785 env->IBAT[0][nr] = (value & 0x00001FFFUL) |
1786 (value & ~0x0001FFFFUL & ~mask);
1787 env->DBAT[0][nr] = env->IBAT[0][nr];
1788 if (env->IBAT[1][nr] & 0x40) {
1789 #if !defined(FLUSH_ALL_TLBS)
1790 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1791 #else
1792 do_inval = 1;
1793 #endif
1794 }
1795 #if defined(FLUSH_ALL_TLBS)
1796 if (do_inval)
1797 tlb_flush(env, 1);
1798 #endif
1799 }
1800 }
1801
1802 void ppc_store_ibatl_601 (CPUPPCState *env, int nr, target_ulong value)
1803 {
1804 target_ulong mask;
1805 int do_inval;
1806
1807 dump_store_bat(env, 'I', 1, nr, value);
1808 if (env->IBAT[1][nr] != value) {
1809 do_inval = 0;
1810 if (env->IBAT[1][nr] & 0x40) {
1811 #if !defined(FLUSH_ALL_TLBS)
1812 mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
1813 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1814 #else
1815 do_inval = 1;
1816 #endif
1817 }
1818 if (value & 0x40) {
1819 #if !defined(FLUSH_ALL_TLBS)
1820 mask = (value << 17) & 0x0FFE0000UL;
1821 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1822 #else
1823 do_inval = 1;
1824 #endif
1825 }
1826 env->IBAT[1][nr] = value;
1827 env->DBAT[1][nr] = value;
1828 #if defined(FLUSH_ALL_TLBS)
1829 if (do_inval)
1830 tlb_flush(env, 1);
1831 #endif
1832 }
1833 }
1834
1835 /*****************************************************************************/
1836 /* TLB management */
1837 void ppc_tlb_invalidate_all (CPUPPCState *env)
1838 {
1839 switch (env->mmu_model) {
1840 case POWERPC_MMU_SOFT_6xx:
1841 case POWERPC_MMU_SOFT_74xx:
1842 ppc6xx_tlb_invalidate_all(env);
1843 break;
1844 case POWERPC_MMU_SOFT_4xx:
1845 case POWERPC_MMU_SOFT_4xx_Z:
1846 ppc4xx_tlb_invalidate_all(env);
1847 break;
1848 case POWERPC_MMU_REAL:
1849 cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
1850 break;
1851 case POWERPC_MMU_MPC8xx:
1852 /* XXX: TODO */
1853 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1854 break;
1855 case POWERPC_MMU_BOOKE:
1856 /* XXX: TODO */
1857 cpu_abort(env, "BookE MMU model is not implemented\n");
1858 break;
1859 case POWERPC_MMU_BOOKE_FSL:
1860 /* XXX: TODO */
1861 if (!kvm_enabled())
1862 cpu_abort(env, "BookE MMU model is not implemented\n");
1863 break;
1864 case POWERPC_MMU_32B:
1865 case POWERPC_MMU_601:
1866 #if defined(TARGET_PPC64)
1867 case POWERPC_MMU_620:
1868 case POWERPC_MMU_64B:
1869 #endif /* defined(TARGET_PPC64) */
1870 tlb_flush(env, 1);
1871 break;
1872 default:
1873 /* XXX: TODO */
1874 cpu_abort(env, "Unknown MMU model\n");
1875 break;
1876 }
1877 }
1878
1879 void ppc_tlb_invalidate_one (CPUPPCState *env, target_ulong addr)
1880 {
1881 #if !defined(FLUSH_ALL_TLBS)
1882 addr &= TARGET_PAGE_MASK;
1883 switch (env->mmu_model) {
1884 case POWERPC_MMU_SOFT_6xx:
1885 case POWERPC_MMU_SOFT_74xx:
1886 ppc6xx_tlb_invalidate_virt(env, addr, 0);
1887 if (env->id_tlbs == 1)
1888 ppc6xx_tlb_invalidate_virt(env, addr, 1);
1889 break;
1890 case POWERPC_MMU_SOFT_4xx:
1891 case POWERPC_MMU_SOFT_4xx_Z:
1892 ppc4xx_tlb_invalidate_virt(env, addr, env->spr[SPR_40x_PID]);
1893 break;
1894 case POWERPC_MMU_REAL:
1895 cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
1896 break;
1897 case POWERPC_MMU_MPC8xx:
1898 /* XXX: TODO */
1899 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1900 break;
1901 case POWERPC_MMU_BOOKE:
1902 /* XXX: TODO */
1903 cpu_abort(env, "BookE MMU model is not implemented\n");
1904 break;
1905 case POWERPC_MMU_BOOKE_FSL:
1906 /* XXX: TODO */
1907 cpu_abort(env, "BookE FSL MMU model is not implemented\n");
1908 break;
1909 case POWERPC_MMU_32B:
1910 case POWERPC_MMU_601:
1911 /* tlbie invalidate TLBs for all segments */
1912 addr &= ~((target_ulong)-1ULL << 28);
1913 /* XXX: this case should be optimized,
1914 * giving a mask to tlb_flush_page
1915 */
1916 tlb_flush_page(env, addr | (0x0 << 28));
1917 tlb_flush_page(env, addr | (0x1 << 28));
1918 tlb_flush_page(env, addr | (0x2 << 28));
1919 tlb_flush_page(env, addr | (0x3 << 28));
1920 tlb_flush_page(env, addr | (0x4 << 28));
1921 tlb_flush_page(env, addr | (0x5 << 28));
1922 tlb_flush_page(env, addr | (0x6 << 28));
1923 tlb_flush_page(env, addr | (0x7 << 28));
1924 tlb_flush_page(env, addr | (0x8 << 28));
1925 tlb_flush_page(env, addr | (0x9 << 28));
1926 tlb_flush_page(env, addr | (0xA << 28));
1927 tlb_flush_page(env, addr | (0xB << 28));
1928 tlb_flush_page(env, addr | (0xC << 28));
1929 tlb_flush_page(env, addr | (0xD << 28));
1930 tlb_flush_page(env, addr | (0xE << 28));
1931 tlb_flush_page(env, addr | (0xF << 28));
1932 break;
1933 #if defined(TARGET_PPC64)
1934 case POWERPC_MMU_620:
1935 case POWERPC_MMU_64B:
1936 /* tlbie invalidate TLBs for all segments */
1937 /* XXX: given the fact that there are too many segments to invalidate,
1938 * and we still don't have a tlb_flush_mask(env, n, mask) in Qemu,
1939 * we just invalidate all TLBs
1940 */
1941 tlb_flush(env, 1);
1942 break;
1943 #endif /* defined(TARGET_PPC64) */
1944 default:
1945 /* XXX: TODO */
1946 cpu_abort(env, "Unknown MMU model\n");
1947 break;
1948 }
1949 #else
1950 ppc_tlb_invalidate_all(env);
1951 #endif
1952 }
1953
1954 /*****************************************************************************/
1955 /* Special registers manipulation */
1956 #if defined(TARGET_PPC64)
1957 void ppc_store_asr (CPUPPCState *env, target_ulong value)
1958 {
1959 if (env->asr != value) {
1960 env->asr = value;
1961 tlb_flush(env, 1);
1962 }
1963 }
1964 #endif
1965
1966 void ppc_store_sdr1 (CPUPPCState *env, target_ulong value)
1967 {
1968 LOG_MMU("%s: " ADDRX "\n", __func__, value);
1969 if (env->sdr1 != value) {
1970 /* XXX: for PowerPC 64, should check that the HTABSIZE value
1971 * is <= 28
1972 */
1973 env->sdr1 = value;
1974 tlb_flush(env, 1);
1975 }
1976 }
1977
1978 #if defined(TARGET_PPC64)
1979 target_ulong ppc_load_sr (CPUPPCState *env, int slb_nr)
1980 {
1981 // XXX
1982 return 0;
1983 }
1984 #endif
1985
1986 void ppc_store_sr (CPUPPCState *env, int srnum, target_ulong value)
1987 {
1988 LOG_MMU("%s: reg=%d " ADDRX " " ADDRX "\n",
1989 __func__, srnum, value, env->sr[srnum]);
1990 #if defined(TARGET_PPC64)
1991 if (env->mmu_model & POWERPC_MMU_64) {
1992 uint64_t rb = 0, rs = 0;
1993
1994 /* ESID = srnum */
1995 rb |= ((uint32_t)srnum & 0xf) << 28;
1996 /* Set the valid bit */
1997 rb |= 1 << 27;
1998 /* Index = ESID */
1999 rb |= (uint32_t)srnum;
2000
2001 /* VSID = VSID */
2002 rs |= (value & 0xfffffff) << 12;
2003 /* flags = flags */
2004 rs |= ((value >> 27) & 0xf) << 9;
2005
2006 ppc_store_slb(env, rb, rs);
2007 } else
2008 #endif
2009 if (env->sr[srnum] != value) {
2010 env->sr[srnum] = value;
2011 /* Invalidating 256MB of virtual memory in 4kB pages is way longer than
2012 flusing the whole TLB. */
2013 #if !defined(FLUSH_ALL_TLBS) && 0
2014 {
2015 target_ulong page, end;
2016 /* Invalidate 256 MB of virtual memory */
2017 page = (16 << 20) * srnum;
2018 end = page + (16 << 20);
2019 for (; page != end; page += TARGET_PAGE_SIZE)
2020 tlb_flush_page(env, page);
2021 }
2022 #else
2023 tlb_flush(env, 1);
2024 #endif
2025 }
2026 }
2027 #endif /* !defined (CONFIG_USER_ONLY) */
2028
2029 /* GDBstub can read and write MSR... */
2030 void ppc_store_msr (CPUPPCState *env, target_ulong value)
2031 {
2032 hreg_store_msr(env, value, 0);
2033 }
2034
2035 /*****************************************************************************/
2036 /* Exception processing */
2037 #if defined (CONFIG_USER_ONLY)
2038 void do_interrupt (CPUState *env)
2039 {
2040 env->exception_index = POWERPC_EXCP_NONE;
2041 env->error_code = 0;
2042 }
2043
2044 void ppc_hw_interrupt (CPUState *env)
2045 {
2046 env->exception_index = POWERPC_EXCP_NONE;
2047 env->error_code = 0;
2048 }
2049 #else /* defined (CONFIG_USER_ONLY) */
2050 static always_inline void dump_syscall (CPUState *env)
2051 {
2052 qemu_log_mask(CPU_LOG_INT, "syscall r0=" REGX " r3=" REGX " r4=" REGX
2053 " r5=" REGX " r6=" REGX " nip=" ADDRX "\n",
2054 ppc_dump_gpr(env, 0), ppc_dump_gpr(env, 3), ppc_dump_gpr(env, 4),
2055 ppc_dump_gpr(env, 5), ppc_dump_gpr(env, 6), env->nip);
2056 }
2057
2058 /* Note that this function should be greatly optimized
2059 * when called with a constant excp, from ppc_hw_interrupt
2060 */
2061 static always_inline void powerpc_excp (CPUState *env,
2062 int excp_model, int excp)
2063 {
2064 target_ulong msr, new_msr, vector;
2065 int srr0, srr1, asrr0, asrr1;
2066 int lpes0, lpes1, lev;
2067
2068 if (0) {
2069 /* XXX: find a suitable condition to enable the hypervisor mode */
2070 lpes0 = (env->spr[SPR_LPCR] >> 1) & 1;
2071 lpes1 = (env->spr[SPR_LPCR] >> 2) & 1;
2072 } else {
2073 /* Those values ensure we won't enter the hypervisor mode */
2074 lpes0 = 0;
2075 lpes1 = 1;
2076 }
2077
2078 qemu_log_mask(CPU_LOG_INT, "Raise exception at " ADDRX " => %08x (%02x)\n",
2079 env->nip, excp, env->error_code);
2080 msr = env->msr;
2081 new_msr = msr;
2082 srr0 = SPR_SRR0;
2083 srr1 = SPR_SRR1;
2084 asrr0 = -1;
2085 asrr1 = -1;
2086 msr &= ~((target_ulong)0x783F0000);
2087 switch (excp) {
2088 case POWERPC_EXCP_NONE:
2089 /* Should never happen */
2090 return;
2091 case POWERPC_EXCP_CRITICAL: /* Critical input */
2092 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2093 switch (excp_model) {
2094 case POWERPC_EXCP_40x:
2095 srr0 = SPR_40x_SRR2;
2096 srr1 = SPR_40x_SRR3;
2097 break;
2098 case POWERPC_EXCP_BOOKE:
2099 srr0 = SPR_BOOKE_CSRR0;
2100 srr1 = SPR_BOOKE_CSRR1;
2101 break;
2102 case POWERPC_EXCP_G2:
2103 break;
2104 default:
2105 goto excp_invalid;
2106 }
2107 goto store_next;
2108 case POWERPC_EXCP_MCHECK: /* Machine check exception */
2109 if (msr_me == 0) {
2110 /* Machine check exception is not enabled.
2111 * Enter checkstop state.
2112 */
2113 if (qemu_log_enabled()) {
2114 qemu_log("Machine check while not allowed. "
2115 "Entering checkstop state\n");
2116 } else {
2117 fprintf(stderr, "Machine check while not allowed. "
2118 "Entering checkstop state\n");
2119 }
2120 env->halted = 1;
2121 env->interrupt_request |= CPU_INTERRUPT_EXITTB;
2122 }
2123 new_msr &= ~((target_ulong)1 << MSR_RI);
2124 new_msr &= ~((target_ulong)1 << MSR_ME);
2125 if (0) {
2126 /* XXX: find a suitable condition to enable the hypervisor mode */
2127 new_msr |= (target_ulong)MSR_HVB;
2128 }
2129 /* XXX: should also have something loaded in DAR / DSISR */
2130 switch (excp_model) {
2131 case POWERPC_EXCP_40x:
2132 srr0 = SPR_40x_SRR2;
2133 srr1 = SPR_40x_SRR3;
2134 break;
2135 case POWERPC_EXCP_BOOKE:
2136 srr0 = SPR_BOOKE_MCSRR0;
2137 srr1 = SPR_BOOKE_MCSRR1;
2138 asrr0 = SPR_BOOKE_CSRR0;
2139 asrr1 = SPR_BOOKE_CSRR1;
2140 break;
2141 default:
2142 break;
2143 }
2144 goto store_next;
2145 case POWERPC_EXCP_DSI: /* Data storage exception */
2146 LOG_EXCP("DSI exception: DSISR=" ADDRX" DAR=" ADDRX "\n",
2147 env->spr[SPR_DSISR], env->spr[SPR_DAR]);
2148 new_msr &= ~((target_ulong)1 << MSR_RI);
2149 if (lpes1 == 0)
2150 new_msr |= (target_ulong)MSR_HVB;
2151 goto store_next;
2152 case POWERPC_EXCP_ISI: /* Instruction storage exception */
2153 LOG_EXCP("ISI exception: msr=" ADDRX ", nip=" ADDRX "\n",
2154 msr, env->nip);
2155 new_msr &= ~((target_ulong)1 << MSR_RI);
2156 if (lpes1 == 0)
2157 new_msr |= (target_ulong)MSR_HVB;
2158 msr |= env->error_code;
2159 goto store_next;
2160 case POWERPC_EXCP_EXTERNAL: /* External input */
2161 new_msr &= ~((target_ulong)1 << MSR_RI);
2162 if (lpes0 == 1)
2163 new_msr |= (target_ulong)MSR_HVB;
2164 goto store_next;
2165 case POWERPC_EXCP_ALIGN: /* Alignment exception */
2166 new_msr &= ~((target_ulong)1 << MSR_RI);
2167 if (lpes1 == 0)
2168 new_msr |= (target_ulong)MSR_HVB;
2169 /* XXX: this is false */
2170 /* Get rS/rD and rA from faulting opcode */
2171 env->spr[SPR_DSISR] |= (ldl_code((env->nip - 4)) & 0x03FF0000) >> 16;
2172 goto store_current;
2173 case POWERPC_EXCP_PROGRAM: /* Program exception */
2174 switch (env->error_code & ~0xF) {
2175 case POWERPC_EXCP_FP:
2176 if ((msr_fe0 == 0 && msr_fe1 == 0) || msr_fp == 0) {
2177 LOG_EXCP("Ignore floating point exception\n");
2178 env->exception_index = POWERPC_EXCP_NONE;
2179 env->error_code = 0;
2180 return;
2181 }
2182 new_msr &= ~((target_ulong)1 << MSR_RI);
2183 if (lpes1 == 0)
2184 new_msr |= (target_ulong)MSR_HVB;
2185 msr |= 0x00100000;
2186 if (msr_fe0 == msr_fe1)
2187 goto store_next;
2188 msr |= 0x00010000;
2189 break;
2190 case POWERPC_EXCP_INVAL:
2191 LOG_EXCP("Invalid instruction at " ADDRX "\n",
2192 env->nip);
2193 new_msr &= ~((target_ulong)1 << MSR_RI);
2194 if (lpes1 == 0)
2195 new_msr |= (target_ulong)MSR_HVB;
2196 msr |= 0x00080000;
2197 break;
2198 case POWERPC_EXCP_PRIV:
2199 new_msr &= ~((target_ulong)1 << MSR_RI);
2200 if (lpes1 == 0)
2201 new_msr |= (target_ulong)MSR_HVB;
2202 msr |= 0x00040000;
2203 break;
2204 case POWERPC_EXCP_TRAP:
2205 new_msr &= ~((target_ulong)1 << MSR_RI);
2206 if (lpes1 == 0)
2207 new_msr |= (target_ulong)MSR_HVB;
2208 msr |= 0x00020000;
2209 break;
2210 default:
2211 /* Should never occur */
2212 cpu_abort(env, "Invalid program exception %d. Aborting\n",
2213 env->error_code);
2214 break;
2215 }
2216 goto store_current;
2217 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
2218 new_msr &= ~((target_ulong)1 << MSR_RI);
2219 if (lpes1 == 0)
2220 new_msr |= (target_ulong)MSR_HVB;
2221 goto store_current;
2222 case POWERPC_EXCP_SYSCALL: /* System call exception */
2223 /* NOTE: this is a temporary hack to support graphics OSI
2224 calls from the MOL driver */
2225 /* XXX: To be removed */
2226 if (env->gpr[3] == 0x113724fa && env->gpr[4] == 0x77810f9b &&
2227 env->osi_call) {
2228 if (env->osi_call(env) != 0) {
2229 env->exception_index = POWERPC_EXCP_NONE;
2230 env->error_code = 0;
2231 return;
2232 }
2233 }
2234 dump_syscall(env);
2235 new_msr &= ~((target_ulong)1 << MSR_RI);
2236 lev = env->error_code;
2237 if (lev == 1 || (lpes0 == 0 && lpes1 == 0))
2238 new_msr |= (target_ulong)MSR_HVB;
2239 goto store_next;
2240 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
2241 new_msr &= ~((target_ulong)1 << MSR_RI);
2242 goto store_current;
2243 case POWERPC_EXCP_DECR: /* Decrementer exception */
2244 new_msr &= ~((target_ulong)1 << MSR_RI);
2245 if (lpes1 == 0)
2246 new_msr |= (target_ulong)MSR_HVB;
2247 goto store_next;
2248 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
2249 /* FIT on 4xx */
2250 LOG_EXCP("FIT exception\n");
2251 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2252 goto store_next;
2253 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
2254 LOG_EXCP("WDT exception\n");
2255 switch (excp_model) {
2256 case POWERPC_EXCP_BOOKE:
2257 srr0 = SPR_BOOKE_CSRR0;
2258 srr1 = SPR_BOOKE_CSRR1;
2259 break;
2260 default:
2261 break;
2262 }
2263 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2264 goto store_next;
2265 case POWERPC_EXCP_DTLB: /* Data TLB error */
2266 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2267 goto store_next;
2268 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
2269 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2270 goto store_next;
2271 case POWERPC_EXCP_DEBUG: /* Debug interrupt */
2272 switch (excp_model) {
2273 case POWERPC_EXCP_BOOKE:
2274 srr0 = SPR_BOOKE_DSRR0;
2275 srr1 = SPR_BOOKE_DSRR1;
2276 asrr0 = SPR_BOOKE_CSRR0;
2277 asrr1 = SPR_BOOKE_CSRR1;
2278 break;
2279 default:
2280 break;
2281 }
2282 /* XXX: TODO */
2283 cpu_abort(env, "Debug exception is not implemented yet !\n");
2284 goto store_next;
2285 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavailable */
2286 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2287 goto store_current;
2288 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data interrupt */
2289 /* XXX: TODO */
2290 cpu_abort(env, "Embedded floating point data exception "
2291 "is not implemented yet !\n");
2292 goto store_next;
2293 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round interrupt */
2294 /* XXX: TODO */
2295 cpu_abort(env, "Embedded floating point round exception "
2296 "is not implemented yet !\n");
2297 goto store_next;
2298 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor interrupt */
2299 new_msr &= ~((target_ulong)1 << MSR_RI);
2300 /* XXX: TODO */
2301 cpu_abort(env,
2302 "Performance counter exception is not implemented yet !\n");
2303 goto store_next;
2304 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
2305 /* XXX: TODO */
2306 cpu_abort(env,
2307 "Embedded doorbell interrupt is not implemented yet !\n");
2308 goto store_next;
2309 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
2310 switch (excp_model) {
2311 case POWERPC_EXCP_BOOKE:
2312 srr0 = SPR_BOOKE_CSRR0;
2313 srr1 = SPR_BOOKE_CSRR1;
2314 break;
2315 default:
2316 break;
2317 }
2318 /* XXX: TODO */
2319 cpu_abort(env, "Embedded doorbell critical interrupt "
2320 "is not implemented yet !\n");
2321 goto store_next;
2322 case POWERPC_EXCP_RESET: /* System reset exception */
2323 new_msr &= ~((target_ulong)1 << MSR_RI);
2324 if (0) {
2325 /* XXX: find a suitable condition to enable the hypervisor mode */
2326 new_msr |= (target_ulong)MSR_HVB;
2327 }
2328 goto store_next;
2329 case POWERPC_EXCP_DSEG: /* Data segment exception */
2330 new_msr &= ~((target_ulong)1 << MSR_RI);
2331 if (lpes1 == 0)
2332 new_msr |= (target_ulong)MSR_HVB;
2333 goto store_next;
2334 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
2335 new_msr &= ~((target_ulong)1 << MSR_RI);
2336 if (lpes1 == 0)
2337 new_msr |= (target_ulong)MSR_HVB;
2338 goto store_next;
2339 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
2340 srr0 = SPR_HSRR0;
2341 srr1 = SPR_HSRR1;
2342 new_msr |= (target_ulong)MSR_HVB;
2343 goto store_next;
2344 case POWERPC_EXCP_TRACE: /* Trace exception */
2345 new_msr &= ~((target_ulong)1 << MSR_RI);
2346 if (lpes1 == 0)
2347 new_msr |= (target_ulong)MSR_HVB;
2348 goto store_next;
2349 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
2350 srr0 = SPR_HSRR0;
2351 srr1 = SPR_HSRR1;
2352 new_msr |= (target_ulong)MSR_HVB;
2353 goto store_next;
2354 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */
2355 srr0 = SPR_HSRR0;
2356 srr1 = SPR_HSRR1;
2357 new_msr |= (target_ulong)MSR_HVB;
2358 goto store_next;
2359 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
2360 srr0 = SPR_HSRR0;
2361 srr1 = SPR_HSRR1;
2362 new_msr |= (target_ulong)MSR_HVB;
2363 goto store_next;
2364 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment exception */
2365 srr0 = SPR_HSRR0;
2366 srr1 = SPR_HSRR1;
2367 new_msr |= (target_ulong)MSR_HVB;
2368 goto store_next;
2369 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
2370 new_msr &= ~((target_ulong)1 << MSR_RI);
2371 if (lpes1 == 0)
2372 new_msr |= (target_ulong)MSR_HVB;
2373 goto store_current;
2374 case POWERPC_EXCP_PIT: /* Programmable interval timer interrupt */
2375 LOG_EXCP("PIT exception\n");
2376 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2377 goto store_next;
2378 case POWERPC_EXCP_IO: /* IO error exception */
2379 /* XXX: TODO */
2380 cpu_abort(env, "601 IO error exception is not implemented yet !\n");
2381 goto store_next;
2382 case POWERPC_EXCP_RUNM: /* Run mode exception */
2383 /* XXX: TODO */
2384 cpu_abort(env, "601 run mode exception is not implemented yet !\n");
2385 goto store_next;
2386 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
2387 /* XXX: TODO */
2388 cpu_abort(env, "602 emulation trap exception "
2389 "is not implemented yet !\n");
2390 goto store_next;
2391 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
2392 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2393 if (lpes1 == 0) /* XXX: check this */
2394 new_msr |= (target_ulong)MSR_HVB;
2395 switch (excp_model) {
2396 case POWERPC_EXCP_602:
2397 case POWERPC_EXCP_603:
2398 case POWERPC_EXCP_603E:
2399 case POWERPC_EXCP_G2:
2400 goto tlb_miss_tgpr;
2401 case POWERPC_EXCP_7x5:
2402 goto tlb_miss;
2403 case POWERPC_EXCP_74xx:
2404 goto tlb_miss_74xx;
2405 default:
2406 cpu_abort(env, "Invalid instruction TLB miss exception\n");
2407 break;
2408 }
2409 break;
2410 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
2411 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2412 if (lpes1 == 0) /* XXX: check this */
2413 new_msr |= (target_ulong)MSR_HVB;
2414 switch (excp_model) {
2415 case POWERPC_EXCP_602:
2416 case POWERPC_EXCP_603:
2417 case POWERPC_EXCP_603E:
2418 case POWERPC_EXCP_G2:
2419 goto tlb_miss_tgpr;
2420 case POWERPC_EXCP_7x5:
2421 goto tlb_miss;
2422 case POWERPC_EXCP_74xx:
2423 goto tlb_miss_74xx;
2424 default:
2425 cpu_abort(env, "Invalid data load TLB miss exception\n");
2426 break;
2427 }
2428 break;
2429 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
2430 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2431 if (lpes1 == 0) /* XXX: check this */
2432 new_msr |= (target_ulong)MSR_HVB;
2433 switch (excp_model) {
2434 case POWERPC_EXCP_602:
2435 case POWERPC_EXCP_603:
2436 case POWERPC_EXCP_603E:
2437 case POWERPC_EXCP_G2:
2438 tlb_miss_tgpr:
2439 /* Swap temporary saved registers with GPRs */
2440 if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) {
2441 new_msr |= (target_ulong)1 << MSR_TGPR;
2442 hreg_swap_gpr_tgpr(env);
2443 }
2444 goto tlb_miss;
2445 case POWERPC_EXCP_7x5:
2446 tlb_miss:
2447 #if defined (DEBUG_SOFTWARE_TLB)
2448 if (qemu_log_enabled()) {
2449 const unsigned char *es;
2450 target_ulong *miss, *cmp;
2451 int en;
2452 if (excp == POWERPC_EXCP_IFTLB) {
2453 es = "I";
2454 en = 'I';
2455 miss = &env->spr[SPR_IMISS];
2456 cmp = &env->spr[SPR_ICMP];
2457 } else {
2458 if (excp == POWERPC_EXCP_DLTLB)
2459 es = "DL";
2460 else
2461 es = "DS";
2462 en = 'D';
2463 miss = &env->spr[SPR_DMISS];
2464 cmp = &env->spr[SPR_DCMP];
2465 }
2466 qemu_log("6xx %sTLB miss: %cM " ADDRX " %cC " ADDRX
2467 " H1 " ADDRX " H2 " ADDRX " %08x\n",
2468 es, en, *miss, en, *cmp,
2469 env->spr[SPR_HASH1], env->spr[SPR_HASH2],
2470 env->error_code);
2471 }
2472 #endif
2473 msr |= env->crf[0] << 28;
2474 msr |= env->error_code; /* key, D/I, S/L bits */
2475 /* Set way using a LRU mechanism */
2476 msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
2477 break;
2478 case POWERPC_EXCP_74xx:
2479 tlb_miss_74xx:
2480 #if defined (DEBUG_SOFTWARE_TLB)
2481 if (qemu_log_enabled()) {
2482 const unsigned char *es;
2483 target_ulong *miss, *cmp;
2484 int en;
2485 if (excp == POWERPC_EXCP_IFTLB) {
2486 es = "I";
2487 en = 'I';
2488 miss = &env->spr[SPR_TLBMISS];
2489 cmp = &env->spr[SPR_PTEHI];
2490 } else {
2491 if (excp == POWERPC_EXCP_DLTLB)
2492 es = "DL";
2493 else
2494 es = "DS";
2495 en = 'D';
2496 miss = &env->spr[SPR_TLBMISS];
2497 cmp = &env->spr[SPR_PTEHI];
2498 }
2499 qemu_log("74xx %sTLB miss: %cM " ADDRX " %cC " ADDRX
2500 " %08x\n",
2501 es, en, *miss, en, *cmp, env->error_code);
2502 }
2503 #endif
2504 msr |= env->error_code; /* key bit */
2505 break;
2506 default:
2507 cpu_abort(env, "Invalid data store TLB miss exception\n");
2508 break;
2509 }
2510 goto store_next;
2511 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
2512 /* XXX: TODO */
2513 cpu_abort(env, "Floating point assist exception "
2514 "is not implemented yet !\n");
2515 goto store_next;
2516 case POWERPC_EXCP_DABR: /* Data address breakpoint */
2517 /* XXX: TODO */
2518 cpu_abort(env, "DABR exception is not implemented yet !\n");
2519 goto store_next;
2520 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
2521 /* XXX: TODO */
2522 cpu_abort(env, "IABR exception is not implemented yet !\n");
2523 goto store_next;
2524 case POWERPC_EXCP_SMI: /* System management interrupt */
2525 /* XXX: TODO */
2526 cpu_abort(env, "SMI exception is not implemented yet !\n");
2527 goto store_next;
2528 case POWERPC_EXCP_THERM: /* Thermal interrupt */
2529 /* XXX: TODO */
2530 cpu_abort(env, "Thermal management exception "
2531 "is not implemented yet !\n");
2532 goto store_next;
2533 case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */
2534 new_msr &= ~((target_ulong)1 << MSR_RI);
2535 if (lpes1 == 0)
2536 new_msr |= (target_ulong)MSR_HVB;
2537 /* XXX: TODO */
2538 cpu_abort(env,
2539 "Performance counter exception is not implemented yet !\n");
2540 goto store_next;
2541 case POWERPC_EXCP_VPUA: /* Vector assist exception */
2542 /* XXX: TODO */
2543 cpu_abort(env, "VPU assist exception is not implemented yet !\n");
2544 goto store_next;
2545 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
2546 /* XXX: TODO */
2547 cpu_abort(env,
2548 "970 soft-patch exception is not implemented yet !\n");
2549 goto store_next;
2550 case POWERPC_EXCP_MAINT: /* Maintenance exception */
2551 /* XXX: TODO */
2552 cpu_abort(env,
2553 "970 maintenance exception is not implemented yet !\n");
2554 goto store_next;
2555 case POWERPC_EXCP_MEXTBR: /* Maskable external breakpoint */
2556 /* XXX: TODO */
2557 cpu_abort(env, "Maskable external exception "
2558 "is not implemented yet !\n");
2559 goto store_next;
2560 case POWERPC_EXCP_NMEXTBR: /* Non maskable external breakpoint */
2561 /* XXX: TODO */
2562 cpu_abort(env, "Non maskable external exception "
2563 "is not implemented yet !\n");
2564 goto store_next;
2565 default:
2566 excp_invalid:
2567 cpu_abort(env, "Invalid PowerPC exception %d. Aborting\n", excp);
2568 break;
2569 store_current:
2570 /* save current instruction location */
2571 env->spr[srr0] = env->nip - 4;
2572 break;
2573 store_next:
2574 /* save next instruction location */
2575 env->spr[srr0] = env->nip;
2576 break;
2577 }
2578 /* Save MSR */
2579 env->spr[srr1] = msr;
2580 /* If any alternate SRR register are defined, duplicate saved values */
2581 if (asrr0 != -1)
2582 env->spr[asrr0] = env->spr[srr0];
2583 if (asrr1 != -1)
2584 env->spr[asrr1] = env->spr[srr1];
2585 /* If we disactivated any translation, flush TLBs */
2586 if (new_msr & ((1 << MSR_IR) | (1 << MSR_DR)))
2587 tlb_flush(env, 1);
2588 /* reload MSR with correct bits */
2589 new_msr &= ~((target_ulong)1 << MSR_EE);
2590 new_msr &= ~((target_ulong)1 << MSR_PR);
2591 new_msr &= ~((target_ulong)1 << MSR_FP);
2592 new_msr &= ~((target_ulong)1 << MSR_FE0);
2593 new_msr &= ~((target_ulong)1 << MSR_SE);
2594 new_msr &= ~((target_ulong)1 << MSR_BE);
2595 new_msr &= ~((target_ulong)1 << MSR_FE1);
2596 new_msr &= ~((target_ulong)1 << MSR_IR);
2597 new_msr &= ~((target_ulong)1 << MSR_DR);
2598 #if 0 /* Fix this: not on all targets */
2599 new_msr &= ~((target_ulong)1 << MSR_PMM);
2600 #endif
2601 new_msr &= ~((target_ulong)1 << MSR_LE);
2602 if (msr_ile)
2603 new_msr |= (target_ulong)1 << MSR_LE;
2604 else
2605 new_msr &= ~((target_ulong)1 << MSR_LE);
2606 /* Jump to handler */
2607 vector = env->excp_vectors[excp];
2608 if (vector == (target_ulong)-1ULL) {
2609 cpu_abort(env, "Raised an exception without defined vector %d\n",
2610 excp);
2611 }
2612 vector |= env->excp_prefix;
2613 #if defined(TARGET_PPC64)
2614 if (excp_model == POWERPC_EXCP_BOOKE) {
2615 if (!msr_icm) {
2616 new_msr &= ~((target_ulong)1 << MSR_CM);
2617 vector = (uint32_t)vector;
2618 } else {
2619 new_msr |= (target_ulong)1 << MSR_CM;
2620 }
2621 } else {
2622 if (!msr_isf && !(env->mmu_model & POWERPC_MMU_64)) {
2623 new_msr &= ~((target_ulong)1 << MSR_SF);
2624 vector = (uint32_t)vector;
2625 } else {
2626 new_msr |= (target_ulong)1 << MSR_SF;
2627 }
2628 }
2629 #endif
2630 /* XXX: we don't use hreg_store_msr here as already have treated
2631 * any special case that could occur. Just store MSR and update hflags
2632 */
2633 env->msr = new_msr & env->msr_mask;
2634 hreg_compute_hflags(env);
2635 env->nip = vector;
2636 /* Reset exception state */
2637 env->exception_index = POWERPC_EXCP_NONE;
2638 env->error_code = 0;
2639 }
2640
2641 void do_interrupt (CPUState *env)
2642 {
2643 powerpc_excp(env, env->excp_model, env->exception_index);
2644 }
2645
2646 void ppc_hw_interrupt (CPUPPCState *env)
2647 {
2648 int hdice;
2649
2650 #if 0
2651 qemu_log_mask(CPU_LOG_INT, "%s: %p pending %08x req %08x me %d ee %d\n",
2652 __func__, env, env->pending_interrupts,
2653 env->interrupt_request, (int)msr_me, (int)msr_ee);
2654 #endif
2655 /* External reset */
2656 if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) {
2657 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
2658 powerpc_excp(env, env->excp_model, POWERPC_EXCP_RESET);
2659 return;
2660 }
2661 /* Machine check exception */
2662 if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) {
2663 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
2664 powerpc_excp(env, env->excp_model, POWERPC_EXCP_MCHECK);
2665 return;
2666 }
2667 #if 0 /* TODO */
2668 /* External debug exception */
2669 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
2670 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
2671 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DEBUG);
2672 return;
2673 }
2674 #endif
2675 if (0) {
2676 /* XXX: find a suitable condition to enable the hypervisor mode */
2677 hdice = env->spr[SPR_LPCR] & 1;
2678 } else {
2679 hdice = 0;
2680 }
2681 if ((msr_ee != 0 || msr_hv == 0 || msr_pr != 0) && hdice != 0) {
2682 /* Hypervisor decrementer exception */
2683 if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) {
2684 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDECR);
2685 powerpc_excp(env, env->excp_model, POWERPC_EXCP_HDECR);
2686 return;
2687 }
2688 }
2689 if (msr_ce != 0) {
2690 /* External critical interrupt */
2691 if (env->pending_interrupts & (1 << PPC_INTERRUPT_CEXT)) {
2692 /* Taking a critical external interrupt does not clear the external
2693 * critical interrupt status
2694 */
2695 #if 0
2696 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CEXT);
2697 #endif
2698 powerpc_excp(env, env->excp_model, POWERPC_EXCP_CRITICAL);
2699 return;
2700 }
2701 }
2702 if (msr_ee != 0) {
2703 /* Watchdog timer on embedded PowerPC */
2704 if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) {
2705 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
2706 powerpc_excp(env, env->excp_model, POWERPC_EXCP_WDT);
2707 return;
2708 }
2709 if (env->pending_interrupts & (1 << PPC_INTERRUPT_CDOORBELL)) {
2710 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CDOORBELL);
2711 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DOORCI);
2712 return;
2713 }
2714 /* Fixed interval timer on embedded PowerPC */
2715 if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) {
2716 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
2717 powerpc_excp(env, env->excp_model, POWERPC_EXCP_FIT);
2718 return;
2719 }
2720 /* Programmable interval timer on embedded PowerPC */
2721 if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) {
2722 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
2723 powerpc_excp(env, env->excp_model, POWERPC_EXCP_PIT);
2724 return;
2725 }
2726 /* Decrementer exception */
2727 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) {
2728 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
2729 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DECR);
2730 return;
2731 }
2732 /* External interrupt */
2733 if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) {
2734 /* Taking an external interrupt does not clear the external
2735 * interrupt status
2736 */
2737 #if 0
2738 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_EXT);
2739 #endif
2740 powerpc_excp(env, env->excp_model, POWERPC_EXCP_EXTERNAL);
2741 return;
2742 }
2743 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DOORBELL)) {
2744 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DOORBELL);
2745 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DOORI);
2746 return;
2747 }
2748 if (env->pending_interrupts & (1 << PPC_INTERRUPT_PERFM)) {
2749 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PERFM);
2750 powerpc_excp(env, env->excp_model, POWERPC_EXCP_PERFM);
2751 return;
2752 }
2753 /* Thermal interrupt */
2754 if (env->pending_interrupts & (1 << PPC_INTERRUPT_THERM)) {
2755 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_THERM);
2756 powerpc_excp(env, env->excp_model, POWERPC_EXCP_THERM);
2757 return;
2758 }
2759 }
2760 }
2761 #endif /* !CONFIG_USER_ONLY */
2762
2763 void cpu_dump_rfi (target_ulong RA, target_ulong msr)
2764 {
2765 qemu_log("Return from exception at " ADDRX " with flags " ADDRX "\n",
2766 RA, msr);
2767 }
2768
2769 void cpu_ppc_reset (void *opaque)
2770 {
2771 CPUPPCState *env = opaque;
2772 target_ulong msr;
2773
2774 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
2775 qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
2776 log_cpu_state(env, 0);
2777 }
2778
2779 msr = (target_ulong)0;
2780 if (0) {
2781 /* XXX: find a suitable condition to enable the hypervisor mode */
2782 msr |= (target_ulong)MSR_HVB;
2783 }
2784 msr |= (target_ulong)0 << MSR_AP; /* TO BE CHECKED */
2785 msr |= (target_ulong)0 << MSR_SA; /* TO BE CHECKED */
2786 msr |= (target_ulong)1 << MSR_EP;
2787 #if defined (DO_SINGLE_STEP) && 0
2788 /* Single step trace mode */
2789 msr |= (target_ulong)1 << MSR_SE;
2790 msr |= (target_ulong)1 << MSR_BE;
2791 #endif
2792 #if defined(CONFIG_USER_ONLY)
2793 msr |= (target_ulong)1 << MSR_FP; /* Allow floating point usage */
2794 msr |= (target_ulong)1 << MSR_VR; /* Allow altivec usage */
2795 msr |= (target_ulong)1 << MSR_SPE; /* Allow SPE usage */
2796 msr |= (target_ulong)1 << MSR_PR;
2797 #else
2798 env->excp_prefix = env->hreset_excp_prefix;
2799 env->nip = env->hreset_vector | env->excp_prefix;
2800 if (env->mmu_model != POWERPC_MMU_REAL)
2801 ppc_tlb_invalidate_all(env);
2802 #endif
2803 env->msr = msr & env->msr_mask;
2804 #if defined(TARGET_PPC64)
2805 if (env->mmu_model & POWERPC_MMU_64)
2806 env->msr |= (1ULL << MSR_SF);
2807 #endif
2808 hreg_compute_hflags(env);
2809 env->reserve = (target_ulong)-1ULL;
2810 /* Be sure no exception or interrupt is pending */
2811 env->pending_interrupts = 0;
2812 env->exception_index = POWERPC_EXCP_NONE;
2813 env->error_code = 0;
2814 /* Flush all TLBs */
2815 tlb_flush(env, 1);
2816 }
2817
2818 CPUPPCState *cpu_ppc_init (const char *cpu_model)
2819 {
2820 CPUPPCState *env;
2821 const ppc_def_t *def;
2822
2823 def = cpu_ppc_find_by_name(cpu_model);
2824 if (!def)
2825 return NULL;
2826
2827 env = qemu_mallocz(sizeof(CPUPPCState));
2828 cpu_exec_init(env);
2829 ppc_translate_init();
2830 env->cpu_model_str = cpu_model;
2831 cpu_ppc_register_internal(env, def);
2832 cpu_ppc_reset(env);
2833
2834 qemu_init_vcpu(env);
2835
2836 return env;
2837 }
2838
2839 void cpu_ppc_close (CPUPPCState *env)
2840 {
2841 /* Should also remove all opcode tables... */
2842 qemu_free(env);
2843 }
Samsung s3c2440 and arm920t support for the mini2440 dev board