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vhost: vhost-kernel: enable vq reset feature
[qemu/kevin.git] / target / ppc / excp_helper.c
bloba05a2ed595b29afcd0a4d0dc54b24c73ee835878
1 /*
2 * PowerPC exception 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 2.1 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 "qemu/osdep.h"
20 #include "qemu/main-loop.h"
21 #include "qemu/log.h"
22 #include "cpu.h"
23 #include "exec/exec-all.h"
24 #include "internal.h"
25 #include "helper_regs.h"
26 #include "hw/ppc/ppc.h"
27
28 #include "trace.h"
29
30 #ifdef CONFIG_TCG
31 #include "exec/helper-proto.h"
32 #include "exec/cpu_ldst.h"
33 #endif
34
35 /*****************************************************************************/
36 /* Exception processing */
37 #if !defined(CONFIG_USER_ONLY)
38
39 static const char *powerpc_excp_name(int excp)
40 {
41 switch (excp) {
42 case POWERPC_EXCP_CRITICAL: return "CRITICAL";
43 case POWERPC_EXCP_MCHECK: return "MCHECK";
44 case POWERPC_EXCP_DSI: return "DSI";
45 case POWERPC_EXCP_ISI: return "ISI";
46 case POWERPC_EXCP_EXTERNAL: return "EXTERNAL";
47 case POWERPC_EXCP_ALIGN: return "ALIGN";
48 case POWERPC_EXCP_PROGRAM: return "PROGRAM";
49 case POWERPC_EXCP_FPU: return "FPU";
50 case POWERPC_EXCP_SYSCALL: return "SYSCALL";
51 case POWERPC_EXCP_APU: return "APU";
52 case POWERPC_EXCP_DECR: return "DECR";
53 case POWERPC_EXCP_FIT: return "FIT";
54 case POWERPC_EXCP_WDT: return "WDT";
55 case POWERPC_EXCP_DTLB: return "DTLB";
56 case POWERPC_EXCP_ITLB: return "ITLB";
57 case POWERPC_EXCP_DEBUG: return "DEBUG";
58 case POWERPC_EXCP_SPEU: return "SPEU";
59 case POWERPC_EXCP_EFPDI: return "EFPDI";
60 case POWERPC_EXCP_EFPRI: return "EFPRI";
61 case POWERPC_EXCP_EPERFM: return "EPERFM";
62 case POWERPC_EXCP_DOORI: return "DOORI";
63 case POWERPC_EXCP_DOORCI: return "DOORCI";
64 case POWERPC_EXCP_GDOORI: return "GDOORI";
65 case POWERPC_EXCP_GDOORCI: return "GDOORCI";
66 case POWERPC_EXCP_HYPPRIV: return "HYPPRIV";
67 case POWERPC_EXCP_RESET: return "RESET";
68 case POWERPC_EXCP_DSEG: return "DSEG";
69 case POWERPC_EXCP_ISEG: return "ISEG";
70 case POWERPC_EXCP_HDECR: return "HDECR";
71 case POWERPC_EXCP_TRACE: return "TRACE";
72 case POWERPC_EXCP_HDSI: return "HDSI";
73 case POWERPC_EXCP_HISI: return "HISI";
74 case POWERPC_EXCP_HDSEG: return "HDSEG";
75 case POWERPC_EXCP_HISEG: return "HISEG";
76 case POWERPC_EXCP_VPU: return "VPU";
77 case POWERPC_EXCP_PIT: return "PIT";
78 case POWERPC_EXCP_EMUL: return "EMUL";
79 case POWERPC_EXCP_IFTLB: return "IFTLB";
80 case POWERPC_EXCP_DLTLB: return "DLTLB";
81 case POWERPC_EXCP_DSTLB: return "DSTLB";
82 case POWERPC_EXCP_FPA: return "FPA";
83 case POWERPC_EXCP_DABR: return "DABR";
84 case POWERPC_EXCP_IABR: return "IABR";
85 case POWERPC_EXCP_SMI: return "SMI";
86 case POWERPC_EXCP_PERFM: return "PERFM";
87 case POWERPC_EXCP_THERM: return "THERM";
88 case POWERPC_EXCP_VPUA: return "VPUA";
89 case POWERPC_EXCP_SOFTP: return "SOFTP";
90 case POWERPC_EXCP_MAINT: return "MAINT";
91 case POWERPC_EXCP_MEXTBR: return "MEXTBR";
92 case POWERPC_EXCP_NMEXTBR: return "NMEXTBR";
93 case POWERPC_EXCP_ITLBE: return "ITLBE";
94 case POWERPC_EXCP_DTLBE: return "DTLBE";
95 case POWERPC_EXCP_VSXU: return "VSXU";
96 case POWERPC_EXCP_FU: return "FU";
97 case POWERPC_EXCP_HV_EMU: return "HV_EMU";
98 case POWERPC_EXCP_HV_MAINT: return "HV_MAINT";
99 case POWERPC_EXCP_HV_FU: return "HV_FU";
100 case POWERPC_EXCP_SDOOR: return "SDOOR";
101 case POWERPC_EXCP_SDOOR_HV: return "SDOOR_HV";
102 case POWERPC_EXCP_HVIRT: return "HVIRT";
103 case POWERPC_EXCP_SYSCALL_VECTORED: return "SYSCALL_VECTORED";
104 default:
105 g_assert_not_reached();
106 }
107 }
108
109 static void dump_syscall(CPUPPCState *env)
110 {
111 qemu_log_mask(CPU_LOG_INT, "syscall r0=%016" PRIx64
112 " r3=%016" PRIx64 " r4=%016" PRIx64 " r5=%016" PRIx64
113 " r6=%016" PRIx64 " r7=%016" PRIx64 " r8=%016" PRIx64
114 " nip=" TARGET_FMT_lx "\n",
115 ppc_dump_gpr(env, 0), ppc_dump_gpr(env, 3),
116 ppc_dump_gpr(env, 4), ppc_dump_gpr(env, 5),
117 ppc_dump_gpr(env, 6), ppc_dump_gpr(env, 7),
118 ppc_dump_gpr(env, 8), env->nip);
119 }
120
121 static void dump_hcall(CPUPPCState *env)
122 {
123 qemu_log_mask(CPU_LOG_INT, "hypercall r3=%016" PRIx64
124 " r4=%016" PRIx64 " r5=%016" PRIx64 " r6=%016" PRIx64
125 " r7=%016" PRIx64 " r8=%016" PRIx64 " r9=%016" PRIx64
126 " r10=%016" PRIx64 " r11=%016" PRIx64 " r12=%016" PRIx64
127 " nip=" TARGET_FMT_lx "\n",
128 ppc_dump_gpr(env, 3), ppc_dump_gpr(env, 4),
129 ppc_dump_gpr(env, 5), ppc_dump_gpr(env, 6),
130 ppc_dump_gpr(env, 7), ppc_dump_gpr(env, 8),
131 ppc_dump_gpr(env, 9), ppc_dump_gpr(env, 10),
132 ppc_dump_gpr(env, 11), ppc_dump_gpr(env, 12),
133 env->nip);
134 }
135
136 static void ppc_excp_debug_sw_tlb(CPUPPCState *env, int excp)
137 {
138 const char *es;
139 target_ulong *miss, *cmp;
140 int en;
141
142 if (!qemu_loglevel_mask(CPU_LOG_MMU)) {
143 return;
144 }
145
146 if (excp == POWERPC_EXCP_IFTLB) {
147 es = "I";
148 en = 'I';
149 miss = &env->spr[SPR_IMISS];
150 cmp = &env->spr[SPR_ICMP];
151 } else {
152 if (excp == POWERPC_EXCP_DLTLB) {
153 es = "DL";
154 } else {
155 es = "DS";
156 }
157 en = 'D';
158 miss = &env->spr[SPR_DMISS];
159 cmp = &env->spr[SPR_DCMP];
160 }
161 qemu_log("6xx %sTLB miss: %cM " TARGET_FMT_lx " %cC "
162 TARGET_FMT_lx " H1 " TARGET_FMT_lx " H2 "
163 TARGET_FMT_lx " %08x\n", es, en, *miss, en, *cmp,
164 env->spr[SPR_HASH1], env->spr[SPR_HASH2],
165 env->error_code);
166 }
167
168 #if defined(TARGET_PPC64)
169 static int powerpc_reset_wakeup(CPUState *cs, CPUPPCState *env, int excp,
170 target_ulong *msr)
171 {
172 /* We no longer are in a PM state */
173 env->resume_as_sreset = false;
174
175 /* Pretend to be returning from doze always as we don't lose state */
176 *msr |= SRR1_WS_NOLOSS;
177
178 /* Machine checks are sent normally */
179 if (excp == POWERPC_EXCP_MCHECK) {
180 return excp;
181 }
182 switch (excp) {
183 case POWERPC_EXCP_RESET:
184 *msr |= SRR1_WAKERESET;
185 break;
186 case POWERPC_EXCP_EXTERNAL:
187 *msr |= SRR1_WAKEEE;
188 break;
189 case POWERPC_EXCP_DECR:
190 *msr |= SRR1_WAKEDEC;
191 break;
192 case POWERPC_EXCP_SDOOR:
193 *msr |= SRR1_WAKEDBELL;
194 break;
195 case POWERPC_EXCP_SDOOR_HV:
196 *msr |= SRR1_WAKEHDBELL;
197 break;
198 case POWERPC_EXCP_HV_MAINT:
199 *msr |= SRR1_WAKEHMI;
200 break;
201 case POWERPC_EXCP_HVIRT:
202 *msr |= SRR1_WAKEHVI;
203 break;
204 default:
205 cpu_abort(cs, "Unsupported exception %d in Power Save mode\n",
206 excp);
207 }
208 return POWERPC_EXCP_RESET;
209 }
210
211 /*
212 * AIL - Alternate Interrupt Location, a mode that allows interrupts to be
213 * taken with the MMU on, and which uses an alternate location (e.g., so the
214 * kernel/hv can map the vectors there with an effective address).
215 *
216 * An interrupt is considered to be taken "with AIL" or "AIL applies" if they
217 * are delivered in this way. AIL requires the LPCR to be set to enable this
218 * mode, and then a number of conditions have to be true for AIL to apply.
219 *
220 * First of all, SRESET, MCE, and HMI are always delivered without AIL, because
221 * they specifically want to be in real mode (e.g., the MCE might be signaling
222 * a SLB multi-hit which requires SLB flush before the MMU can be enabled).
223 *
224 * After that, behaviour depends on the current MSR[IR], MSR[DR], MSR[HV],
225 * whether or not the interrupt changes MSR[HV] from 0 to 1, and the current
226 * radix mode (LPCR[HR]).
227 *
228 * POWER8, POWER9 with LPCR[HR]=0
229 * | LPCR[AIL] | MSR[IR||DR] | MSR[HV] | new MSR[HV] | AIL |
230 * +-----------+-------------+---------+-------------+-----+
231 * | a | 00/01/10 | x | x | 0 |
232 * | a | 11 | 0 | 1 | 0 |
233 * | a | 11 | 1 | 1 | a |
234 * | a | 11 | 0 | 0 | a |
235 * +-------------------------------------------------------+
236 *
237 * POWER9 with LPCR[HR]=1
238 * | LPCR[AIL] | MSR[IR||DR] | MSR[HV] | new MSR[HV] | AIL |
239 * +-----------+-------------+---------+-------------+-----+
240 * | a | 00/01/10 | x | x | 0 |
241 * | a | 11 | x | x | a |
242 * +-------------------------------------------------------+
243 *
244 * The difference with POWER9 being that MSR[HV] 0->1 interrupts can be sent to
245 * the hypervisor in AIL mode if the guest is radix. This is good for
246 * performance but allows the guest to influence the AIL of hypervisor
247 * interrupts using its MSR, and also the hypervisor must disallow guest
248 * interrupts (MSR[HV] 0->0) from using AIL if the hypervisor does not want to
249 * use AIL for its MSR[HV] 0->1 interrupts.
250 *
251 * POWER10 addresses those issues with a new LPCR[HAIL] bit that is applied to
252 * interrupts that begin execution with MSR[HV]=1 (so both MSR[HV] 0->1 and
253 * MSR[HV] 1->1).
254 *
255 * HAIL=1 is equivalent to AIL=3, for interrupts delivered with MSR[HV]=1.
256 *
257 * POWER10 behaviour is
258 * | LPCR[AIL] | LPCR[HAIL] | MSR[IR||DR] | MSR[HV] | new MSR[HV] | AIL |
259 * +-----------+------------+-------------+---------+-------------+-----+
260 * | a | h | 00/01/10 | 0 | 0 | 0 |
261 * | a | h | 11 | 0 | 0 | a |
262 * | a | h | x | 0 | 1 | h |
263 * | a | h | 00/01/10 | 1 | 1 | 0 |
264 * | a | h | 11 | 1 | 1 | h |
265 * +--------------------------------------------------------------------+
266 */
267 static void ppc_excp_apply_ail(PowerPCCPU *cpu, int excp, target_ulong msr,
268 target_ulong *new_msr, target_ulong *vector)
269 {
270 PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
271 CPUPPCState *env = &cpu->env;
272 bool mmu_all_on = ((msr >> MSR_IR) & 1) && ((msr >> MSR_DR) & 1);
273 bool hv_escalation = !(msr & MSR_HVB) && (*new_msr & MSR_HVB);
274 int ail = 0;
275
276 if (excp == POWERPC_EXCP_MCHECK ||
277 excp == POWERPC_EXCP_RESET ||
278 excp == POWERPC_EXCP_HV_MAINT) {
279 /* SRESET, MCE, HMI never apply AIL */
280 return;
281 }
282
283 if (!(pcc->lpcr_mask & LPCR_AIL)) {
284 /* This CPU does not have AIL */
285 return;
286 }
287
288 /* P8 & P9 */
289 if (!(pcc->lpcr_mask & LPCR_HAIL)) {
290 if (!mmu_all_on) {
291 /* AIL only works if MSR[IR] and MSR[DR] are both enabled. */
292 return;
293 }
294 if (hv_escalation && !(env->spr[SPR_LPCR] & LPCR_HR)) {
295 /*
296 * AIL does not work if there is a MSR[HV] 0->1 transition and the
297 * partition is in HPT mode. For radix guests, such interrupts are
298 * allowed to be delivered to the hypervisor in ail mode.
299 */
300 return;
301 }
302
303 ail = (env->spr[SPR_LPCR] & LPCR_AIL) >> LPCR_AIL_SHIFT;
304 if (ail == 0) {
305 return;
306 }
307 if (ail == 1) {
308 /* AIL=1 is reserved, treat it like AIL=0 */
309 return;
310 }
311
312 /* P10 and up */
313 } else {
314 if (!mmu_all_on && !hv_escalation) {
315 /*
316 * AIL works for HV interrupts even with guest MSR[IR/DR] disabled.
317 * Guest->guest and HV->HV interrupts do require MMU on.
318 */
319 return;
320 }
321
322 if (*new_msr & MSR_HVB) {
323 if (!(env->spr[SPR_LPCR] & LPCR_HAIL)) {
324 /* HV interrupts depend on LPCR[HAIL] */
325 return;
326 }
327 ail = 3; /* HAIL=1 gives AIL=3 behaviour for HV interrupts */
328 } else {
329 ail = (env->spr[SPR_LPCR] & LPCR_AIL) >> LPCR_AIL_SHIFT;
330 }
331 if (ail == 0) {
332 return;
333 }
334 if (ail == 1 || ail == 2) {
335 /* AIL=1 and AIL=2 are reserved, treat them like AIL=0 */
336 return;
337 }
338 }
339
340 /*
341 * AIL applies, so the new MSR gets IR and DR set, and an offset applied
342 * to the new IP.
343 */
344 *new_msr |= (1 << MSR_IR) | (1 << MSR_DR);
345
346 if (excp != POWERPC_EXCP_SYSCALL_VECTORED) {
347 if (ail == 2) {
348 *vector |= 0x0000000000018000ull;
349 } else if (ail == 3) {
350 *vector |= 0xc000000000004000ull;
351 }
352 } else {
353 /*
354 * scv AIL is a little different. AIL=2 does not change the address,
355 * only the MSR. AIL=3 replaces the 0x17000 base with 0xc...3000.
356 */
357 if (ail == 3) {
358 *vector &= ~0x0000000000017000ull; /* Un-apply the base offset */
359 *vector |= 0xc000000000003000ull; /* Apply scv's AIL=3 offset */
360 }
361 }
362 }
363 #endif
364
365 static void powerpc_reset_excp_state(PowerPCCPU *cpu)
366 {
367 CPUState *cs = CPU(cpu);
368 CPUPPCState *env = &cpu->env;
369
370 /* Reset exception state */
371 cs->exception_index = POWERPC_EXCP_NONE;
372 env->error_code = 0;
373 }
374
375 static void powerpc_set_excp_state(PowerPCCPU *cpu, target_ulong vector,
376 target_ulong msr)
377 {
378 CPUPPCState *env = &cpu->env;
379
380 assert((msr & env->msr_mask) == msr);
381
382 /*
383 * We don't use hreg_store_msr here as already have treated any
384 * special case that could occur. Just store MSR and update hflags
385 *
386 * Note: We *MUST* not use hreg_store_msr() as-is anyway because it
387 * will prevent setting of the HV bit which some exceptions might need
388 * to do.
389 */
390 env->nip = vector;
391 env->msr = msr;
392 hreg_compute_hflags(env);
393 ppc_maybe_interrupt(env);
394
395 powerpc_reset_excp_state(cpu);
396
397 /*
398 * Any interrupt is context synchronizing, check if TCG TLB needs
399 * a delayed flush on ppc64
400 */
401 check_tlb_flush(env, false);
402
403 /* Reset the reservation */
404 env->reserve_addr = -1;
405 }
406
407 static void powerpc_excp_40x(PowerPCCPU *cpu, int excp)
408 {
409 CPUState *cs = CPU(cpu);
410 CPUPPCState *env = &cpu->env;
411 target_ulong msr, new_msr, vector;
412 int srr0, srr1;
413
414 /* new srr1 value excluding must-be-zero bits */
415 msr = env->msr & ~0x783f0000ULL;
416
417 /*
418 * new interrupt handler msr preserves existing ME unless
419 * explicitly overriden.
420 */
421 new_msr = env->msr & (((target_ulong)1 << MSR_ME));
422
423 /* target registers */
424 srr0 = SPR_SRR0;
425 srr1 = SPR_SRR1;
426
427 /*
428 * Hypervisor emulation assistance interrupt only exists on server
429 * arch 2.05 server or later.
430 */
431 if (excp == POWERPC_EXCP_HV_EMU) {
432 excp = POWERPC_EXCP_PROGRAM;
433 }
434
435 vector = env->excp_vectors[excp];
436 if (vector == (target_ulong)-1ULL) {
437 cpu_abort(cs, "Raised an exception without defined vector %d\n",
438 excp);
439 }
440
441 vector |= env->excp_prefix;
442
443 switch (excp) {
444 case POWERPC_EXCP_CRITICAL: /* Critical input */
445 srr0 = SPR_40x_SRR2;
446 srr1 = SPR_40x_SRR3;
447 break;
448 case POWERPC_EXCP_MCHECK: /* Machine check exception */
449 if (!FIELD_EX64(env->msr, MSR, ME)) {
450 /*
451 * Machine check exception is not enabled. Enter
452 * checkstop state.
453 */
454 fprintf(stderr, "Machine check while not allowed. "
455 "Entering checkstop state\n");
456 if (qemu_log_separate()) {
457 qemu_log("Machine check while not allowed. "
458 "Entering checkstop state\n");
459 }
460 cs->halted = 1;
461 cpu_interrupt_exittb(cs);
462 }
463
464 /* machine check exceptions don't have ME set */
465 new_msr &= ~((target_ulong)1 << MSR_ME);
466
467 srr0 = SPR_40x_SRR2;
468 srr1 = SPR_40x_SRR3;
469 break;
470 case POWERPC_EXCP_DSI: /* Data storage exception */
471 trace_ppc_excp_dsi(env->spr[SPR_40x_ESR], env->spr[SPR_40x_DEAR]);
472 break;
473 case POWERPC_EXCP_ISI: /* Instruction storage exception */
474 trace_ppc_excp_isi(msr, env->nip);
475 break;
476 case POWERPC_EXCP_EXTERNAL: /* External input */
477 break;
478 case POWERPC_EXCP_ALIGN: /* Alignment exception */
479 break;
480 case POWERPC_EXCP_PROGRAM: /* Program exception */
481 switch (env->error_code & ~0xF) {
482 case POWERPC_EXCP_FP:
483 if (!FIELD_EX64_FE(env->msr) || !FIELD_EX64(env->msr, MSR, FP)) {
484 trace_ppc_excp_fp_ignore();
485 powerpc_reset_excp_state(cpu);
486 return;
487 }
488 env->spr[SPR_40x_ESR] = ESR_FP;
489 break;
490 case POWERPC_EXCP_INVAL:
491 trace_ppc_excp_inval(env->nip);
492 env->spr[SPR_40x_ESR] = ESR_PIL;
493 break;
494 case POWERPC_EXCP_PRIV:
495 env->spr[SPR_40x_ESR] = ESR_PPR;
496 break;
497 case POWERPC_EXCP_TRAP:
498 env->spr[SPR_40x_ESR] = ESR_PTR;
499 break;
500 default:
501 cpu_abort(cs, "Invalid program exception %d. Aborting\n",
502 env->error_code);
503 break;
504 }
505 break;
506 case POWERPC_EXCP_SYSCALL: /* System call exception */
507 dump_syscall(env);
508
509 /*
510 * We need to correct the NIP which in this case is supposed
511 * to point to the next instruction
512 */
513 env->nip += 4;
514 break;
515 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
516 trace_ppc_excp_print("FIT");
517 break;
518 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
519 trace_ppc_excp_print("WDT");
520 break;
521 case POWERPC_EXCP_DTLB: /* Data TLB error */
522 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
523 break;
524 case POWERPC_EXCP_PIT: /* Programmable interval timer interrupt */
525 trace_ppc_excp_print("PIT");
526 break;
527 case POWERPC_EXCP_DEBUG: /* Debug interrupt */
528 cpu_abort(cs, "%s exception not implemented\n",
529 powerpc_excp_name(excp));
530 break;
531 default:
532 cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
533 break;
534 }
535
536 /* Save PC */
537 env->spr[srr0] = env->nip;
538
539 /* Save MSR */
540 env->spr[srr1] = msr;
541
542 powerpc_set_excp_state(cpu, vector, new_msr);
543 }
544
545 static void powerpc_excp_6xx(PowerPCCPU *cpu, int excp)
546 {
547 CPUState *cs = CPU(cpu);
548 CPUPPCState *env = &cpu->env;
549 target_ulong msr, new_msr, vector;
550
551 /* new srr1 value excluding must-be-zero bits */
552 msr = env->msr & ~0x783f0000ULL;
553
554 /*
555 * new interrupt handler msr preserves existing ME unless
556 * explicitly overriden
557 */
558 new_msr = env->msr & ((target_ulong)1 << MSR_ME);
559
560 /*
561 * Hypervisor emulation assistance interrupt only exists on server
562 * arch 2.05 server or later.
563 */
564 if (excp == POWERPC_EXCP_HV_EMU) {
565 excp = POWERPC_EXCP_PROGRAM;
566 }
567
568 vector = env->excp_vectors[excp];
569 if (vector == (target_ulong)-1ULL) {
570 cpu_abort(cs, "Raised an exception without defined vector %d\n",
571 excp);
572 }
573
574 vector |= env->excp_prefix;
575
576 switch (excp) {
577 case POWERPC_EXCP_CRITICAL: /* Critical input */
578 break;
579 case POWERPC_EXCP_MCHECK: /* Machine check exception */
580 if (!FIELD_EX64(env->msr, MSR, ME)) {
581 /*
582 * Machine check exception is not enabled. Enter
583 * checkstop state.
584 */
585 fprintf(stderr, "Machine check while not allowed. "
586 "Entering checkstop state\n");
587 if (qemu_log_separate()) {
588 qemu_log("Machine check while not allowed. "
589 "Entering checkstop state\n");
590 }
591 cs->halted = 1;
592 cpu_interrupt_exittb(cs);
593 }
594
595 /* machine check exceptions don't have ME set */
596 new_msr &= ~((target_ulong)1 << MSR_ME);
597
598 break;
599 case POWERPC_EXCP_DSI: /* Data storage exception */
600 trace_ppc_excp_dsi(env->spr[SPR_DSISR], env->spr[SPR_DAR]);
601 break;
602 case POWERPC_EXCP_ISI: /* Instruction storage exception */
603 trace_ppc_excp_isi(msr, env->nip);
604 msr |= env->error_code;
605 break;
606 case POWERPC_EXCP_EXTERNAL: /* External input */
607 break;
608 case POWERPC_EXCP_ALIGN: /* Alignment exception */
609 /* Get rS/rD and rA from faulting opcode */
610 /*
611 * Note: the opcode fields will not be set properly for a
612 * direct store load/store, but nobody cares as nobody
613 * actually uses direct store segments.
614 */
615 env->spr[SPR_DSISR] |= (env->error_code & 0x03FF0000) >> 16;
616 break;
617 case POWERPC_EXCP_PROGRAM: /* Program exception */
618 switch (env->error_code & ~0xF) {
619 case POWERPC_EXCP_FP:
620 if (!FIELD_EX64_FE(env->msr) || !FIELD_EX64(env->msr, MSR, FP)) {
621 trace_ppc_excp_fp_ignore();
622 powerpc_reset_excp_state(cpu);
623 return;
624 }
625
626 /*
627 * FP exceptions always have NIP pointing to the faulting
628 * instruction, so always use store_next and claim we are
629 * precise in the MSR.
630 */
631 msr |= 0x00100000;
632 break;
633 case POWERPC_EXCP_INVAL:
634 trace_ppc_excp_inval(env->nip);
635 msr |= 0x00080000;
636 break;
637 case POWERPC_EXCP_PRIV:
638 msr |= 0x00040000;
639 break;
640 case POWERPC_EXCP_TRAP:
641 msr |= 0x00020000;
642 break;
643 default:
644 /* Should never occur */
645 cpu_abort(cs, "Invalid program exception %d. Aborting\n",
646 env->error_code);
647 break;
648 }
649 break;
650 case POWERPC_EXCP_SYSCALL: /* System call exception */
651 dump_syscall(env);
652
653 /*
654 * We need to correct the NIP which in this case is supposed
655 * to point to the next instruction
656 */
657 env->nip += 4;
658 break;
659 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
660 case POWERPC_EXCP_DECR: /* Decrementer exception */
661 break;
662 case POWERPC_EXCP_DTLB: /* Data TLB error */
663 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
664 break;
665 case POWERPC_EXCP_RESET: /* System reset exception */
666 if (FIELD_EX64(env->msr, MSR, POW)) {
667 cpu_abort(cs, "Trying to deliver power-saving system reset "
668 "exception %d with no HV support\n", excp);
669 }
670 break;
671 case POWERPC_EXCP_TRACE: /* Trace exception */
672 break;
673 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
674 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
675 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
676 /* Swap temporary saved registers with GPRs */
677 if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) {
678 new_msr |= (target_ulong)1 << MSR_TGPR;
679 hreg_swap_gpr_tgpr(env);
680 }
681
682 ppc_excp_debug_sw_tlb(env, excp);
683
684 msr |= env->crf[0] << 28;
685 msr |= env->error_code; /* key, D/I, S/L bits */
686 /* Set way using a LRU mechanism */
687 msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
688 break;
689 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
690 case POWERPC_EXCP_DABR: /* Data address breakpoint */
691 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
692 case POWERPC_EXCP_SMI: /* System management interrupt */
693 case POWERPC_EXCP_MEXTBR: /* Maskable external breakpoint */
694 case POWERPC_EXCP_NMEXTBR: /* Non maskable external breakpoint */
695 cpu_abort(cs, "%s exception not implemented\n",
696 powerpc_excp_name(excp));
697 break;
698 default:
699 cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
700 break;
701 }
702
703 /*
704 * Sort out endianness of interrupt, this differs depending on the
705 * CPU, the HV mode, etc...
706 */
707 if (ppc_interrupts_little_endian(cpu, !!(new_msr & MSR_HVB))) {
708 new_msr |= (target_ulong)1 << MSR_LE;
709 }
710
711 /* Save PC */
712 env->spr[SPR_SRR0] = env->nip;
713
714 /* Save MSR */
715 env->spr[SPR_SRR1] = msr;
716
717 powerpc_set_excp_state(cpu, vector, new_msr);
718 }
719
720 static void powerpc_excp_7xx(PowerPCCPU *cpu, int excp)
721 {
722 CPUState *cs = CPU(cpu);
723 CPUPPCState *env = &cpu->env;
724 target_ulong msr, new_msr, vector;
725
726 /* new srr1 value excluding must-be-zero bits */
727 msr = env->msr & ~0x783f0000ULL;
728
729 /*
730 * new interrupt handler msr preserves existing ME unless
731 * explicitly overriden
732 */
733 new_msr = env->msr & ((target_ulong)1 << MSR_ME);
734
735 /*
736 * Hypervisor emulation assistance interrupt only exists on server
737 * arch 2.05 server or later.
738 */
739 if (excp == POWERPC_EXCP_HV_EMU) {
740 excp = POWERPC_EXCP_PROGRAM;
741 }
742
743 vector = env->excp_vectors[excp];
744 if (vector == (target_ulong)-1ULL) {
745 cpu_abort(cs, "Raised an exception without defined vector %d\n",
746 excp);
747 }
748
749 vector |= env->excp_prefix;
750
751 switch (excp) {
752 case POWERPC_EXCP_MCHECK: /* Machine check exception */
753 if (!FIELD_EX64(env->msr, MSR, ME)) {
754 /*
755 * Machine check exception is not enabled. Enter
756 * checkstop state.
757 */
758 fprintf(stderr, "Machine check while not allowed. "
759 "Entering checkstop state\n");
760 if (qemu_log_separate()) {
761 qemu_log("Machine check while not allowed. "
762 "Entering checkstop state\n");
763 }
764 cs->halted = 1;
765 cpu_interrupt_exittb(cs);
766 }
767
768 /* machine check exceptions don't have ME set */
769 new_msr &= ~((target_ulong)1 << MSR_ME);
770
771 break;
772 case POWERPC_EXCP_DSI: /* Data storage exception */
773 trace_ppc_excp_dsi(env->spr[SPR_DSISR], env->spr[SPR_DAR]);
774 break;
775 case POWERPC_EXCP_ISI: /* Instruction storage exception */
776 trace_ppc_excp_isi(msr, env->nip);
777 msr |= env->error_code;
778 break;
779 case POWERPC_EXCP_EXTERNAL: /* External input */
780 break;
781 case POWERPC_EXCP_ALIGN: /* Alignment exception */
782 /* Get rS/rD and rA from faulting opcode */
783 /*
784 * Note: the opcode fields will not be set properly for a
785 * direct store load/store, but nobody cares as nobody
786 * actually uses direct store segments.
787 */
788 env->spr[SPR_DSISR] |= (env->error_code & 0x03FF0000) >> 16;
789 break;
790 case POWERPC_EXCP_PROGRAM: /* Program exception */
791 switch (env->error_code & ~0xF) {
792 case POWERPC_EXCP_FP:
793 if (!FIELD_EX64_FE(env->msr) || !FIELD_EX64(env->msr, MSR, FP)) {
794 trace_ppc_excp_fp_ignore();
795 powerpc_reset_excp_state(cpu);
796 return;
797 }
798
799 /*
800 * FP exceptions always have NIP pointing to the faulting
801 * instruction, so always use store_next and claim we are
802 * precise in the MSR.
803 */
804 msr |= 0x00100000;
805 break;
806 case POWERPC_EXCP_INVAL:
807 trace_ppc_excp_inval(env->nip);
808 msr |= 0x00080000;
809 break;
810 case POWERPC_EXCP_PRIV:
811 msr |= 0x00040000;
812 break;
813 case POWERPC_EXCP_TRAP:
814 msr |= 0x00020000;
815 break;
816 default:
817 /* Should never occur */
818 cpu_abort(cs, "Invalid program exception %d. Aborting\n",
819 env->error_code);
820 break;
821 }
822 break;
823 case POWERPC_EXCP_SYSCALL: /* System call exception */
824 {
825 int lev = env->error_code;
826
827 if (lev == 1 && cpu->vhyp) {
828 dump_hcall(env);
829 } else {
830 dump_syscall(env);
831 }
832
833 /*
834 * We need to correct the NIP which in this case is supposed
835 * to point to the next instruction
836 */
837 env->nip += 4;
838
839 /*
840 * The Virtual Open Firmware (VOF) relies on the 'sc 1'
841 * instruction to communicate with QEMU. The pegasos2 machine
842 * uses VOF and the 7xx CPUs, so although the 7xx don't have
843 * HV mode, we need to keep hypercall support.
844 */
845 if (lev == 1 && cpu->vhyp) {
846 PPCVirtualHypervisorClass *vhc =
847 PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
848 vhc->hypercall(cpu->vhyp, cpu);
849 return;
850 }
851
852 break;
853 }
854 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
855 case POWERPC_EXCP_DECR: /* Decrementer exception */
856 break;
857 case POWERPC_EXCP_RESET: /* System reset exception */
858 if (FIELD_EX64(env->msr, MSR, POW)) {
859 cpu_abort(cs, "Trying to deliver power-saving system reset "
860 "exception %d with no HV support\n", excp);
861 }
862 break;
863 case POWERPC_EXCP_TRACE: /* Trace exception */
864 break;
865 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
866 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
867 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
868 ppc_excp_debug_sw_tlb(env, excp);
869
870 msr |= env->crf[0] << 28;
871 msr |= env->error_code; /* key, D/I, S/L bits */
872 /* Set way using a LRU mechanism */
873 msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
874
875 break;
876 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
877 case POWERPC_EXCP_SMI: /* System management interrupt */
878 case POWERPC_EXCP_THERM: /* Thermal interrupt */
879 case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */
880 cpu_abort(cs, "%s exception not implemented\n",
881 powerpc_excp_name(excp));
882 break;
883 default:
884 cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
885 break;
886 }
887
888 /*
889 * Sort out endianness of interrupt, this differs depending on the
890 * CPU, the HV mode, etc...
891 */
892 if (ppc_interrupts_little_endian(cpu, !!(new_msr & MSR_HVB))) {
893 new_msr |= (target_ulong)1 << MSR_LE;
894 }
895
896 /* Save PC */
897 env->spr[SPR_SRR0] = env->nip;
898
899 /* Save MSR */
900 env->spr[SPR_SRR1] = msr;
901
902 powerpc_set_excp_state(cpu, vector, new_msr);
903 }
904
905 static void powerpc_excp_74xx(PowerPCCPU *cpu, int excp)
906 {
907 CPUState *cs = CPU(cpu);
908 CPUPPCState *env = &cpu->env;
909 target_ulong msr, new_msr, vector;
910
911 /* new srr1 value excluding must-be-zero bits */
912 msr = env->msr & ~0x783f0000ULL;
913
914 /*
915 * new interrupt handler msr preserves existing ME unless
916 * explicitly overriden
917 */
918 new_msr = env->msr & ((target_ulong)1 << MSR_ME);
919
920 /*
921 * Hypervisor emulation assistance interrupt only exists on server
922 * arch 2.05 server or later.
923 */
924 if (excp == POWERPC_EXCP_HV_EMU) {
925 excp = POWERPC_EXCP_PROGRAM;
926 }
927
928 vector = env->excp_vectors[excp];
929 if (vector == (target_ulong)-1ULL) {
930 cpu_abort(cs, "Raised an exception without defined vector %d\n",
931 excp);
932 }
933
934 vector |= env->excp_prefix;
935
936 switch (excp) {
937 case POWERPC_EXCP_MCHECK: /* Machine check exception */
938 if (!FIELD_EX64(env->msr, MSR, ME)) {
939 /*
940 * Machine check exception is not enabled. Enter
941 * checkstop state.
942 */
943 fprintf(stderr, "Machine check while not allowed. "
944 "Entering checkstop state\n");
945 if (qemu_log_separate()) {
946 qemu_log("Machine check while not allowed. "
947 "Entering checkstop state\n");
948 }
949 cs->halted = 1;
950 cpu_interrupt_exittb(cs);
951 }
952
953 /* machine check exceptions don't have ME set */
954 new_msr &= ~((target_ulong)1 << MSR_ME);
955
956 break;
957 case POWERPC_EXCP_DSI: /* Data storage exception */
958 trace_ppc_excp_dsi(env->spr[SPR_DSISR], env->spr[SPR_DAR]);
959 break;
960 case POWERPC_EXCP_ISI: /* Instruction storage exception */
961 trace_ppc_excp_isi(msr, env->nip);
962 msr |= env->error_code;
963 break;
964 case POWERPC_EXCP_EXTERNAL: /* External input */
965 break;
966 case POWERPC_EXCP_ALIGN: /* Alignment exception */
967 /* Get rS/rD and rA from faulting opcode */
968 /*
969 * Note: the opcode fields will not be set properly for a
970 * direct store load/store, but nobody cares as nobody
971 * actually uses direct store segments.
972 */
973 env->spr[SPR_DSISR] |= (env->error_code & 0x03FF0000) >> 16;
974 break;
975 case POWERPC_EXCP_PROGRAM: /* Program exception */
976 switch (env->error_code & ~0xF) {
977 case POWERPC_EXCP_FP:
978 if (!FIELD_EX64_FE(env->msr) || !FIELD_EX64(env->msr, MSR, FP)) {
979 trace_ppc_excp_fp_ignore();
980 powerpc_reset_excp_state(cpu);
981 return;
982 }
983
984 /*
985 * FP exceptions always have NIP pointing to the faulting
986 * instruction, so always use store_next and claim we are
987 * precise in the MSR.
988 */
989 msr |= 0x00100000;
990 break;
991 case POWERPC_EXCP_INVAL:
992 trace_ppc_excp_inval(env->nip);
993 msr |= 0x00080000;
994 break;
995 case POWERPC_EXCP_PRIV:
996 msr |= 0x00040000;
997 break;
998 case POWERPC_EXCP_TRAP:
999 msr |= 0x00020000;
1000 break;
1001 default:
1002 /* Should never occur */
1003 cpu_abort(cs, "Invalid program exception %d. Aborting\n",
1004 env->error_code);
1005 break;
1006 }
1007 break;
1008 case POWERPC_EXCP_SYSCALL: /* System call exception */
1009 {
1010 int lev = env->error_code;
1011
1012 if ((lev == 1) && cpu->vhyp) {
1013 dump_hcall(env);
1014 } else {
1015 dump_syscall(env);
1016 }
1017
1018 /*
1019 * We need to correct the NIP which in this case is supposed
1020 * to point to the next instruction
1021 */
1022 env->nip += 4;
1023
1024 /*
1025 * The Virtual Open Firmware (VOF) relies on the 'sc 1'
1026 * instruction to communicate with QEMU. The pegasos2 machine
1027 * uses VOF and the 74xx CPUs, so although the 74xx don't have
1028 * HV mode, we need to keep hypercall support.
1029 */
1030 if ((lev == 1) && cpu->vhyp) {
1031 PPCVirtualHypervisorClass *vhc =
1032 PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
1033 vhc->hypercall(cpu->vhyp, cpu);
1034 return;
1035 }
1036
1037 break;
1038 }
1039 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
1040 case POWERPC_EXCP_DECR: /* Decrementer exception */
1041 break;
1042 case POWERPC_EXCP_RESET: /* System reset exception */
1043 if (FIELD_EX64(env->msr, MSR, POW)) {
1044 cpu_abort(cs, "Trying to deliver power-saving system reset "
1045 "exception %d with no HV support\n", excp);
1046 }
1047 break;
1048 case POWERPC_EXCP_TRACE: /* Trace exception */
1049 break;
1050 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
1051 break;
1052 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
1053 case POWERPC_EXCP_SMI: /* System management interrupt */
1054 case POWERPC_EXCP_THERM: /* Thermal interrupt */
1055 case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */
1056 case POWERPC_EXCP_VPUA: /* Vector assist exception */
1057 cpu_abort(cs, "%s exception not implemented\n",
1058 powerpc_excp_name(excp));
1059 break;
1060 default:
1061 cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
1062 break;
1063 }
1064
1065 /*
1066 * Sort out endianness of interrupt, this differs depending on the
1067 * CPU, the HV mode, etc...
1068 */
1069 if (ppc_interrupts_little_endian(cpu, !!(new_msr & MSR_HVB))) {
1070 new_msr |= (target_ulong)1 << MSR_LE;
1071 }
1072
1073 /* Save PC */
1074 env->spr[SPR_SRR0] = env->nip;
1075
1076 /* Save MSR */
1077 env->spr[SPR_SRR1] = msr;
1078
1079 powerpc_set_excp_state(cpu, vector, new_msr);
1080 }
1081
1082 static void powerpc_excp_booke(PowerPCCPU *cpu, int excp)
1083 {
1084 CPUState *cs = CPU(cpu);
1085 CPUPPCState *env = &cpu->env;
1086 target_ulong msr, new_msr, vector;
1087 int srr0, srr1;
1088
1089 msr = env->msr;
1090
1091 /*
1092 * new interrupt handler msr preserves existing ME unless
1093 * explicitly overriden
1094 */
1095 new_msr = env->msr & ((target_ulong)1 << MSR_ME);
1096
1097 /* target registers */
1098 srr0 = SPR_SRR0;
1099 srr1 = SPR_SRR1;
1100
1101 /*
1102 * Hypervisor emulation assistance interrupt only exists on server
1103 * arch 2.05 server or later.
1104 */
1105 if (excp == POWERPC_EXCP_HV_EMU) {
1106 excp = POWERPC_EXCP_PROGRAM;
1107 }
1108
1109 #ifdef TARGET_PPC64
1110 /*
1111 * SPEU and VPU share the same IVOR but they exist in different
1112 * processors. SPEU is e500v1/2 only and VPU is e6500 only.
1113 */
1114 if (excp == POWERPC_EXCP_VPU) {
1115 excp = POWERPC_EXCP_SPEU;
1116 }
1117 #endif
1118
1119 vector = env->excp_vectors[excp];
1120 if (vector == (target_ulong)-1ULL) {
1121 cpu_abort(cs, "Raised an exception without defined vector %d\n",
1122 excp);
1123 }
1124
1125 vector |= env->excp_prefix;
1126
1127 switch (excp) {
1128 case POWERPC_EXCP_CRITICAL: /* Critical input */
1129 srr0 = SPR_BOOKE_CSRR0;
1130 srr1 = SPR_BOOKE_CSRR1;
1131 break;
1132 case POWERPC_EXCP_MCHECK: /* Machine check exception */
1133 if (!FIELD_EX64(env->msr, MSR, ME)) {
1134 /*
1135 * Machine check exception is not enabled. Enter
1136 * checkstop state.
1137 */
1138 fprintf(stderr, "Machine check while not allowed. "
1139 "Entering checkstop state\n");
1140 if (qemu_log_separate()) {
1141 qemu_log("Machine check while not allowed. "
1142 "Entering checkstop state\n");
1143 }
1144 cs->halted = 1;
1145 cpu_interrupt_exittb(cs);
1146 }
1147
1148 /* machine check exceptions don't have ME set */
1149 new_msr &= ~((target_ulong)1 << MSR_ME);
1150
1151 /* FIXME: choose one or the other based on CPU type */
1152 srr0 = SPR_BOOKE_MCSRR0;
1153 srr1 = SPR_BOOKE_MCSRR1;
1154
1155 env->spr[SPR_BOOKE_CSRR0] = env->nip;
1156 env->spr[SPR_BOOKE_CSRR1] = msr;
1157
1158 break;
1159 case POWERPC_EXCP_DSI: /* Data storage exception */
1160 trace_ppc_excp_dsi(env->spr[SPR_BOOKE_ESR], env->spr[SPR_BOOKE_DEAR]);
1161 break;
1162 case POWERPC_EXCP_ISI: /* Instruction storage exception */
1163 trace_ppc_excp_isi(msr, env->nip);
1164 break;
1165 case POWERPC_EXCP_EXTERNAL: /* External input */
1166 if (env->mpic_proxy) {
1167 /* IACK the IRQ on delivery */
1168 env->spr[SPR_BOOKE_EPR] = ldl_phys(cs->as, env->mpic_iack);
1169 }
1170 break;
1171 case POWERPC_EXCP_ALIGN: /* Alignment exception */
1172 break;
1173 case POWERPC_EXCP_PROGRAM: /* Program exception */
1174 switch (env->error_code & ~0xF) {
1175 case POWERPC_EXCP_FP:
1176 if (!FIELD_EX64_FE(env->msr) || !FIELD_EX64(env->msr, MSR, FP)) {
1177 trace_ppc_excp_fp_ignore();
1178 powerpc_reset_excp_state(cpu);
1179 return;
1180 }
1181
1182 /*
1183 * FP exceptions always have NIP pointing to the faulting
1184 * instruction, so always use store_next and claim we are
1185 * precise in the MSR.
1186 */
1187 msr |= 0x00100000;
1188 env->spr[SPR_BOOKE_ESR] = ESR_FP;
1189 break;
1190 case POWERPC_EXCP_INVAL:
1191 trace_ppc_excp_inval(env->nip);
1192 msr |= 0x00080000;
1193 env->spr[SPR_BOOKE_ESR] = ESR_PIL;
1194 break;
1195 case POWERPC_EXCP_PRIV:
1196 msr |= 0x00040000;
1197 env->spr[SPR_BOOKE_ESR] = ESR_PPR;
1198 break;
1199 case POWERPC_EXCP_TRAP:
1200 msr |= 0x00020000;
1201 env->spr[SPR_BOOKE_ESR] = ESR_PTR;
1202 break;
1203 default:
1204 /* Should never occur */
1205 cpu_abort(cs, "Invalid program exception %d. Aborting\n",
1206 env->error_code);
1207 break;
1208 }
1209 break;
1210 case POWERPC_EXCP_SYSCALL: /* System call exception */
1211 dump_syscall(env);
1212
1213 /*
1214 * We need to correct the NIP which in this case is supposed
1215 * to point to the next instruction
1216 */
1217 env->nip += 4;
1218 break;
1219 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
1220 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
1221 case POWERPC_EXCP_DECR: /* Decrementer exception */
1222 break;
1223 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
1224 /* FIT on 4xx */
1225 trace_ppc_excp_print("FIT");
1226 break;
1227 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
1228 trace_ppc_excp_print("WDT");
1229 srr0 = SPR_BOOKE_CSRR0;
1230 srr1 = SPR_BOOKE_CSRR1;
1231 break;
1232 case POWERPC_EXCP_DTLB: /* Data TLB error */
1233 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
1234 break;
1235 case POWERPC_EXCP_DEBUG: /* Debug interrupt */
1236 if (env->flags & POWERPC_FLAG_DE) {
1237 /* FIXME: choose one or the other based on CPU type */
1238 srr0 = SPR_BOOKE_DSRR0;
1239 srr1 = SPR_BOOKE_DSRR1;
1240
1241 env->spr[SPR_BOOKE_CSRR0] = env->nip;
1242 env->spr[SPR_BOOKE_CSRR1] = msr;
1243
1244 /* DBSR already modified by caller */
1245 } else {
1246 cpu_abort(cs, "Debug exception triggered on unsupported model\n");
1247 }
1248 break;
1249 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavailable/VPU */
1250 env->spr[SPR_BOOKE_ESR] = ESR_SPV;
1251 break;
1252 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
1253 break;
1254 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
1255 srr0 = SPR_BOOKE_CSRR0;
1256 srr1 = SPR_BOOKE_CSRR1;
1257 break;
1258 case POWERPC_EXCP_RESET: /* System reset exception */
1259 if (FIELD_EX64(env->msr, MSR, POW)) {
1260 cpu_abort(cs, "Trying to deliver power-saving system reset "
1261 "exception %d with no HV support\n", excp);
1262 }
1263 break;
1264 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data interrupt */
1265 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round interrupt */
1266 cpu_abort(cs, "%s exception not implemented\n",
1267 powerpc_excp_name(excp));
1268 break;
1269 default:
1270 cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
1271 break;
1272 }
1273
1274 #if defined(TARGET_PPC64)
1275 if (env->spr[SPR_BOOKE_EPCR] & EPCR_ICM) {
1276 /* Cat.64-bit: EPCR.ICM is copied to MSR.CM */
1277 new_msr |= (target_ulong)1 << MSR_CM;
1278 } else {
1279 vector = (uint32_t)vector;
1280 }
1281 #endif
1282
1283 /* Save PC */
1284 env->spr[srr0] = env->nip;
1285
1286 /* Save MSR */
1287 env->spr[srr1] = msr;
1288
1289 powerpc_set_excp_state(cpu, vector, new_msr);
1290 }
1291
1292 /*
1293 * When running a nested HV guest under vhyp, external interrupts are
1294 * delivered as HVIRT.
1295 */
1296 static bool books_vhyp_promotes_external_to_hvirt(PowerPCCPU *cpu)
1297 {
1298 if (cpu->vhyp) {
1299 return vhyp_cpu_in_nested(cpu);
1300 }
1301 return false;
1302 }
1303
1304 #ifdef TARGET_PPC64
1305 /*
1306 * When running under vhyp, hcalls are always intercepted and sent to the
1307 * vhc->hypercall handler.
1308 */
1309 static bool books_vhyp_handles_hcall(PowerPCCPU *cpu)
1310 {
1311 if (cpu->vhyp) {
1312 return !vhyp_cpu_in_nested(cpu);
1313 }
1314 return false;
1315 }
1316
1317 /*
1318 * When running a nested KVM HV guest under vhyp, HV exceptions are not
1319 * delivered to the guest (because there is no concept of HV support), but
1320 * rather they are sent tothe vhyp to exit from the L2 back to the L1 and
1321 * return from the H_ENTER_NESTED hypercall.
1322 */
1323 static bool books_vhyp_handles_hv_excp(PowerPCCPU *cpu)
1324 {
1325 if (cpu->vhyp) {
1326 return vhyp_cpu_in_nested(cpu);
1327 }
1328 return false;
1329 }
1330
1331 static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
1332 {
1333 CPUState *cs = CPU(cpu);
1334 CPUPPCState *env = &cpu->env;
1335 target_ulong msr, new_msr, vector;
1336 int srr0, srr1, lev = -1;
1337
1338 /* new srr1 value excluding must-be-zero bits */
1339 msr = env->msr & ~0x783f0000ULL;
1340
1341 /*
1342 * new interrupt handler msr preserves existing HV and ME unless
1343 * explicitly overriden
1344 */
1345 new_msr = env->msr & (((target_ulong)1 << MSR_ME) | MSR_HVB);
1346
1347 /* target registers */
1348 srr0 = SPR_SRR0;
1349 srr1 = SPR_SRR1;
1350
1351 /*
1352 * check for special resume at 0x100 from doze/nap/sleep/winkle on
1353 * P7/P8/P9
1354 */
1355 if (env->resume_as_sreset) {
1356 excp = powerpc_reset_wakeup(cs, env, excp, &msr);
1357 }
1358
1359 /*
1360 * We don't want to generate a Hypervisor Emulation Assistance
1361 * Interrupt if we don't have HVB in msr_mask (PAPR mode).
1362 */
1363 if (excp == POWERPC_EXCP_HV_EMU && !(env->msr_mask & MSR_HVB)) {
1364 excp = POWERPC_EXCP_PROGRAM;
1365 }
1366
1367 vector = env->excp_vectors[excp];
1368 if (vector == (target_ulong)-1ULL) {
1369 cpu_abort(cs, "Raised an exception without defined vector %d\n",
1370 excp);
1371 }
1372
1373 vector |= env->excp_prefix;
1374
1375 switch (excp) {
1376 case POWERPC_EXCP_MCHECK: /* Machine check exception */
1377 if (!FIELD_EX64(env->msr, MSR, ME)) {
1378 /*
1379 * Machine check exception is not enabled. Enter
1380 * checkstop state.
1381 */
1382 fprintf(stderr, "Machine check while not allowed. "
1383 "Entering checkstop state\n");
1384 if (qemu_log_separate()) {
1385 qemu_log("Machine check while not allowed. "
1386 "Entering checkstop state\n");
1387 }
1388 cs->halted = 1;
1389 cpu_interrupt_exittb(cs);
1390 }
1391 if (env->msr_mask & MSR_HVB) {
1392 /*
1393 * ISA specifies HV, but can be delivered to guest with HV
1394 * clear (e.g., see FWNMI in PAPR).
1395 */
1396 new_msr |= (target_ulong)MSR_HVB;
1397 }
1398
1399 /* machine check exceptions don't have ME set */
1400 new_msr &= ~((target_ulong)1 << MSR_ME);
1401
1402 break;
1403 case POWERPC_EXCP_DSI: /* Data storage exception */
1404 trace_ppc_excp_dsi(env->spr[SPR_DSISR], env->spr[SPR_DAR]);
1405 break;
1406 case POWERPC_EXCP_ISI: /* Instruction storage exception */
1407 trace_ppc_excp_isi(msr, env->nip);
1408 msr |= env->error_code;
1409 break;
1410 case POWERPC_EXCP_EXTERNAL: /* External input */
1411 {
1412 bool lpes0;
1413
1414 /*
1415 * LPES0 is only taken into consideration if we support HV
1416 * mode for this CPU.
1417 */
1418 if (!env->has_hv_mode) {
1419 break;
1420 }
1421
1422 lpes0 = !!(env->spr[SPR_LPCR] & LPCR_LPES0);
1423
1424 if (!lpes0) {
1425 new_msr |= (target_ulong)MSR_HVB;
1426 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
1427 srr0 = SPR_HSRR0;
1428 srr1 = SPR_HSRR1;
1429 }
1430
1431 break;
1432 }
1433 case POWERPC_EXCP_ALIGN: /* Alignment exception */
1434 /* Get rS/rD and rA from faulting opcode */
1435 /*
1436 * Note: the opcode fields will not be set properly for a
1437 * direct store load/store, but nobody cares as nobody
1438 * actually uses direct store segments.
1439 */
1440 env->spr[SPR_DSISR] |= (env->error_code & 0x03FF0000) >> 16;
1441 break;
1442 case POWERPC_EXCP_PROGRAM: /* Program exception */
1443 switch (env->error_code & ~0xF) {
1444 case POWERPC_EXCP_FP:
1445 if (!FIELD_EX64_FE(env->msr) || !FIELD_EX64(env->msr, MSR, FP)) {
1446 trace_ppc_excp_fp_ignore();
1447 powerpc_reset_excp_state(cpu);
1448 return;
1449 }
1450
1451 /*
1452 * FP exceptions always have NIP pointing to the faulting
1453 * instruction, so always use store_next and claim we are
1454 * precise in the MSR.
1455 */
1456 msr |= 0x00100000;
1457 break;
1458 case POWERPC_EXCP_INVAL:
1459 trace_ppc_excp_inval(env->nip);
1460 msr |= 0x00080000;
1461 break;
1462 case POWERPC_EXCP_PRIV:
1463 msr |= 0x00040000;
1464 break;
1465 case POWERPC_EXCP_TRAP:
1466 msr |= 0x00020000;
1467 break;
1468 default:
1469 /* Should never occur */
1470 cpu_abort(cs, "Invalid program exception %d. Aborting\n",
1471 env->error_code);
1472 break;
1473 }
1474 break;
1475 case POWERPC_EXCP_SYSCALL: /* System call exception */
1476 lev = env->error_code;
1477
1478 if ((lev == 1) && cpu->vhyp) {
1479 dump_hcall(env);
1480 } else {
1481 dump_syscall(env);
1482 }
1483
1484 /*
1485 * We need to correct the NIP which in this case is supposed
1486 * to point to the next instruction
1487 */
1488 env->nip += 4;
1489
1490 /* "PAPR mode" built-in hypercall emulation */
1491 if ((lev == 1) && books_vhyp_handles_hcall(cpu)) {
1492 PPCVirtualHypervisorClass *vhc =
1493 PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
1494 vhc->hypercall(cpu->vhyp, cpu);
1495 return;
1496 }
1497 if (lev == 1) {
1498 new_msr |= (target_ulong)MSR_HVB;
1499 }
1500 break;
1501 case POWERPC_EXCP_SYSCALL_VECTORED: /* scv exception */
1502 lev = env->error_code;
1503 dump_syscall(env);
1504 env->nip += 4;
1505 new_msr |= env->msr & ((target_ulong)1 << MSR_EE);
1506 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
1507
1508 vector += lev * 0x20;
1509
1510 env->lr = env->nip;
1511 env->ctr = msr;
1512 break;
1513 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
1514 case POWERPC_EXCP_DECR: /* Decrementer exception */
1515 break;
1516 case POWERPC_EXCP_RESET: /* System reset exception */
1517 /* A power-saving exception sets ME, otherwise it is unchanged */
1518 if (FIELD_EX64(env->msr, MSR, POW)) {
1519 /* indicate that we resumed from power save mode */
1520 msr |= 0x10000;
1521 new_msr |= ((target_ulong)1 << MSR_ME);
1522 }
1523 if (env->msr_mask & MSR_HVB) {
1524 /*
1525 * ISA specifies HV, but can be delivered to guest with HV
1526 * clear (e.g., see FWNMI in PAPR, NMI injection in QEMU).
1527 */
1528 new_msr |= (target_ulong)MSR_HVB;
1529 } else {
1530 if (FIELD_EX64(env->msr, MSR, POW)) {
1531 cpu_abort(cs, "Trying to deliver power-saving system reset "
1532 "exception %d with no HV support\n", excp);
1533 }
1534 }
1535 break;
1536 case POWERPC_EXCP_DSEG: /* Data segment exception */
1537 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
1538 case POWERPC_EXCP_TRACE: /* Trace exception */
1539 break;
1540 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */
1541 msr |= env->error_code;
1542 /* fall through */
1543 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
1544 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
1545 case POWERPC_EXCP_SDOOR_HV: /* Hypervisor Doorbell interrupt */
1546 case POWERPC_EXCP_HV_EMU:
1547 case POWERPC_EXCP_HVIRT: /* Hypervisor virtualization */
1548 srr0 = SPR_HSRR0;
1549 srr1 = SPR_HSRR1;
1550 new_msr |= (target_ulong)MSR_HVB;
1551 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
1552 break;
1553 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
1554 case POWERPC_EXCP_VSXU: /* VSX unavailable exception */
1555 case POWERPC_EXCP_FU: /* Facility unavailable exception */
1556 env->spr[SPR_FSCR] |= ((target_ulong)env->error_code << 56);
1557 break;
1558 case POWERPC_EXCP_HV_FU: /* Hypervisor Facility Unavailable Exception */
1559 env->spr[SPR_HFSCR] |= ((target_ulong)env->error_code << FSCR_IC_POS);
1560 srr0 = SPR_HSRR0;
1561 srr1 = SPR_HSRR1;
1562 new_msr |= (target_ulong)MSR_HVB;
1563 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
1564 break;
1565 case POWERPC_EXCP_PERFM_EBB: /* Performance Monitor EBB Exception */
1566 case POWERPC_EXCP_EXTERNAL_EBB: /* External EBB Exception */
1567 env->spr[SPR_BESCR] &= ~BESCR_GE;
1568
1569 /*
1570 * Save NIP for rfebb insn in SPR_EBBRR. Next nip is
1571 * stored in the EBB Handler SPR_EBBHR.
1572 */
1573 env->spr[SPR_EBBRR] = env->nip;
1574 powerpc_set_excp_state(cpu, env->spr[SPR_EBBHR], env->msr);
1575
1576 /*
1577 * This exception is handled in userspace. No need to proceed.
1578 */
1579 return;
1580 case POWERPC_EXCP_THERM: /* Thermal interrupt */
1581 case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */
1582 case POWERPC_EXCP_VPUA: /* Vector assist exception */
1583 case POWERPC_EXCP_MAINT: /* Maintenance exception */
1584 case POWERPC_EXCP_SDOOR: /* Doorbell interrupt */
1585 case POWERPC_EXCP_HV_MAINT: /* Hypervisor Maintenance exception */
1586 cpu_abort(cs, "%s exception not implemented\n",
1587 powerpc_excp_name(excp));
1588 break;
1589 default:
1590 cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
1591 break;
1592 }
1593
1594 /*
1595 * Sort out endianness of interrupt, this differs depending on the
1596 * CPU, the HV mode, etc...
1597 */
1598 if (ppc_interrupts_little_endian(cpu, !!(new_msr & MSR_HVB))) {
1599 new_msr |= (target_ulong)1 << MSR_LE;
1600 }
1601
1602 new_msr |= (target_ulong)1 << MSR_SF;
1603
1604 if (excp != POWERPC_EXCP_SYSCALL_VECTORED) {
1605 /* Save PC */
1606 env->spr[srr0] = env->nip;
1607
1608 /* Save MSR */
1609 env->spr[srr1] = msr;
1610 }
1611
1612 if ((new_msr & MSR_HVB) && books_vhyp_handles_hv_excp(cpu)) {
1613 PPCVirtualHypervisorClass *vhc =
1614 PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
1615 /* Deliver interrupt to L1 by returning from the H_ENTER_NESTED call */
1616 vhc->deliver_hv_excp(cpu, excp);
1617
1618 powerpc_reset_excp_state(cpu);
1619
1620 } else {
1621 /* Sanity check */
1622 if (!(env->msr_mask & MSR_HVB) && srr0 == SPR_HSRR0) {
1623 cpu_abort(cs, "Trying to deliver HV exception (HSRR) %d with "
1624 "no HV support\n", excp);
1625 }
1626
1627 /* This can update new_msr and vector if AIL applies */
1628 ppc_excp_apply_ail(cpu, excp, msr, &new_msr, &vector);
1629
1630 powerpc_set_excp_state(cpu, vector, new_msr);
1631 }
1632 }
1633 #else
1634 static inline void powerpc_excp_books(PowerPCCPU *cpu, int excp)
1635 {
1636 g_assert_not_reached();
1637 }
1638 #endif
1639
1640 static void powerpc_excp(PowerPCCPU *cpu, int excp)
1641 {
1642 CPUState *cs = CPU(cpu);
1643 CPUPPCState *env = &cpu->env;
1644
1645 if (excp <= POWERPC_EXCP_NONE || excp >= POWERPC_EXCP_NB) {
1646 cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
1647 }
1648
1649 qemu_log_mask(CPU_LOG_INT, "Raise exception at " TARGET_FMT_lx
1650 " => %s (%d) error=%02x\n", env->nip, powerpc_excp_name(excp),
1651 excp, env->error_code);
1652
1653 switch (env->excp_model) {
1654 case POWERPC_EXCP_40x:
1655 powerpc_excp_40x(cpu, excp);
1656 break;
1657 case POWERPC_EXCP_6xx:
1658 powerpc_excp_6xx(cpu, excp);
1659 break;
1660 case POWERPC_EXCP_7xx:
1661 powerpc_excp_7xx(cpu, excp);
1662 break;
1663 case POWERPC_EXCP_74xx:
1664 powerpc_excp_74xx(cpu, excp);
1665 break;
1666 case POWERPC_EXCP_BOOKE:
1667 powerpc_excp_booke(cpu, excp);
1668 break;
1669 case POWERPC_EXCP_970:
1670 case POWERPC_EXCP_POWER7:
1671 case POWERPC_EXCP_POWER8:
1672 case POWERPC_EXCP_POWER9:
1673 case POWERPC_EXCP_POWER10:
1674 powerpc_excp_books(cpu, excp);
1675 break;
1676 default:
1677 g_assert_not_reached();
1678 }
1679 }
1680
1681 void ppc_cpu_do_interrupt(CPUState *cs)
1682 {
1683 PowerPCCPU *cpu = POWERPC_CPU(cs);
1684
1685 powerpc_excp(cpu, cs->exception_index);
1686 }
1687
1688 #if defined(TARGET_PPC64)
1689 #define P7_UNUSED_INTERRUPTS \
1690 (PPC_INTERRUPT_RESET | PPC_INTERRUPT_HVIRT | PPC_INTERRUPT_CEXT | \
1691 PPC_INTERRUPT_WDT | PPC_INTERRUPT_CDOORBELL | PPC_INTERRUPT_FIT | \
1692 PPC_INTERRUPT_PIT | PPC_INTERRUPT_DOORBELL | PPC_INTERRUPT_HDOORBELL | \
1693 PPC_INTERRUPT_THERM | PPC_INTERRUPT_EBB)
1694
1695 static int p7_interrupt_powersave(CPUPPCState *env)
1696 {
1697 if ((env->pending_interrupts & PPC_INTERRUPT_EXT) &&
1698 (env->spr[SPR_LPCR] & LPCR_P7_PECE0)) {
1699 return PPC_INTERRUPT_EXT;
1700 }
1701 if ((env->pending_interrupts & PPC_INTERRUPT_DECR) &&
1702 (env->spr[SPR_LPCR] & LPCR_P7_PECE1)) {
1703 return PPC_INTERRUPT_DECR;
1704 }
1705 if ((env->pending_interrupts & PPC_INTERRUPT_MCK) &&
1706 (env->spr[SPR_LPCR] & LPCR_P7_PECE2)) {
1707 return PPC_INTERRUPT_MCK;
1708 }
1709 if ((env->pending_interrupts & PPC_INTERRUPT_HMI) &&
1710 (env->spr[SPR_LPCR] & LPCR_P7_PECE2)) {
1711 return PPC_INTERRUPT_HMI;
1712 }
1713 if (env->pending_interrupts & PPC_INTERRUPT_RESET) {
1714 return PPC_INTERRUPT_RESET;
1715 }
1716 return 0;
1717 }
1718
1719 static int p7_next_unmasked_interrupt(CPUPPCState *env)
1720 {
1721 PowerPCCPU *cpu = env_archcpu(env);
1722 CPUState *cs = CPU(cpu);
1723 /* Ignore MSR[EE] when coming out of some power management states */
1724 bool msr_ee = FIELD_EX64(env->msr, MSR, EE) || env->resume_as_sreset;
1725
1726 assert((env->pending_interrupts & P7_UNUSED_INTERRUPTS) == 0);
1727
1728 if (cs->halted) {
1729 /* LPCR[PECE] controls which interrupts can exit power-saving mode */
1730 return p7_interrupt_powersave(env);
1731 }
1732
1733 /* Machine check exception */
1734 if (env->pending_interrupts & PPC_INTERRUPT_MCK) {
1735 return PPC_INTERRUPT_MCK;
1736 }
1737
1738 /* Hypervisor decrementer exception */
1739 if (env->pending_interrupts & PPC_INTERRUPT_HDECR) {
1740 /* LPCR will be clear when not supported so this will work */
1741 bool hdice = !!(env->spr[SPR_LPCR] & LPCR_HDICE);
1742 if ((msr_ee || !FIELD_EX64_HV(env->msr)) && hdice) {
1743 /* HDEC clears on delivery */
1744 return PPC_INTERRUPT_HDECR;
1745 }
1746 }
1747
1748 /* External interrupt can ignore MSR:EE under some circumstances */
1749 if (env->pending_interrupts & PPC_INTERRUPT_EXT) {
1750 bool lpes0 = !!(env->spr[SPR_LPCR] & LPCR_LPES0);
1751 bool heic = !!(env->spr[SPR_LPCR] & LPCR_HEIC);
1752 /* HEIC blocks delivery to the hypervisor */
1753 if ((msr_ee && !(heic && FIELD_EX64_HV(env->msr) &&
1754 !FIELD_EX64(env->msr, MSR, PR))) ||
1755 (env->has_hv_mode && !FIELD_EX64_HV(env->msr) && !lpes0)) {
1756 return PPC_INTERRUPT_EXT;
1757 }
1758 }
1759 if (msr_ee != 0) {
1760 /* Decrementer exception */
1761 if (env->pending_interrupts & PPC_INTERRUPT_DECR) {
1762 return PPC_INTERRUPT_DECR;
1763 }
1764 if (env->pending_interrupts & PPC_INTERRUPT_PERFM) {
1765 return PPC_INTERRUPT_PERFM;
1766 }
1767 }
1768
1769 return 0;
1770 }
1771
1772 #define P8_UNUSED_INTERRUPTS \
1773 (PPC_INTERRUPT_RESET | PPC_INTERRUPT_DEBUG | PPC_INTERRUPT_HVIRT | \
1774 PPC_INTERRUPT_CEXT | PPC_INTERRUPT_WDT | PPC_INTERRUPT_CDOORBELL | \
1775 PPC_INTERRUPT_FIT | PPC_INTERRUPT_PIT | PPC_INTERRUPT_THERM)
1776
1777 static int p8_interrupt_powersave(CPUPPCState *env)
1778 {
1779 if ((env->pending_interrupts & PPC_INTERRUPT_EXT) &&
1780 (env->spr[SPR_LPCR] & LPCR_P8_PECE2)) {
1781 return PPC_INTERRUPT_EXT;
1782 }
1783 if ((env->pending_interrupts & PPC_INTERRUPT_DECR) &&
1784 (env->spr[SPR_LPCR] & LPCR_P8_PECE3)) {
1785 return PPC_INTERRUPT_DECR;
1786 }
1787 if ((env->pending_interrupts & PPC_INTERRUPT_MCK) &&
1788 (env->spr[SPR_LPCR] & LPCR_P8_PECE4)) {
1789 return PPC_INTERRUPT_MCK;
1790 }
1791 if ((env->pending_interrupts & PPC_INTERRUPT_HMI) &&
1792 (env->spr[SPR_LPCR] & LPCR_P8_PECE4)) {
1793 return PPC_INTERRUPT_HMI;
1794 }
1795 if ((env->pending_interrupts & PPC_INTERRUPT_DOORBELL) &&
1796 (env->spr[SPR_LPCR] & LPCR_P8_PECE0)) {
1797 return PPC_INTERRUPT_DOORBELL;
1798 }
1799 if ((env->pending_interrupts & PPC_INTERRUPT_HDOORBELL) &&
1800 (env->spr[SPR_LPCR] & LPCR_P8_PECE1)) {
1801 return PPC_INTERRUPT_HDOORBELL;
1802 }
1803 if (env->pending_interrupts & PPC_INTERRUPT_RESET) {
1804 return PPC_INTERRUPT_RESET;
1805 }
1806 return 0;
1807 }
1808
1809 static int p8_next_unmasked_interrupt(CPUPPCState *env)
1810 {
1811 PowerPCCPU *cpu = env_archcpu(env);
1812 CPUState *cs = CPU(cpu);
1813 /* Ignore MSR[EE] when coming out of some power management states */
1814 bool msr_ee = FIELD_EX64(env->msr, MSR, EE) || env->resume_as_sreset;
1815
1816 assert((env->pending_interrupts & P8_UNUSED_INTERRUPTS) == 0);
1817
1818 if (cs->halted) {
1819 /* LPCR[PECE] controls which interrupts can exit power-saving mode */
1820 return p8_interrupt_powersave(env);
1821 }
1822
1823 /* Machine check exception */
1824 if (env->pending_interrupts & PPC_INTERRUPT_MCK) {
1825 return PPC_INTERRUPT_MCK;
1826 }
1827
1828 /* Hypervisor decrementer exception */
1829 if (env->pending_interrupts & PPC_INTERRUPT_HDECR) {
1830 /* LPCR will be clear when not supported so this will work */
1831 bool hdice = !!(env->spr[SPR_LPCR] & LPCR_HDICE);
1832 if ((msr_ee || !FIELD_EX64_HV(env->msr)) && hdice) {
1833 /* HDEC clears on delivery */
1834 return PPC_INTERRUPT_HDECR;
1835 }
1836 }
1837
1838 /* External interrupt can ignore MSR:EE under some circumstances */
1839 if (env->pending_interrupts & PPC_INTERRUPT_EXT) {
1840 bool lpes0 = !!(env->spr[SPR_LPCR] & LPCR_LPES0);
1841 bool heic = !!(env->spr[SPR_LPCR] & LPCR_HEIC);
1842 /* HEIC blocks delivery to the hypervisor */
1843 if ((msr_ee && !(heic && FIELD_EX64_HV(env->msr) &&
1844 !FIELD_EX64(env->msr, MSR, PR))) ||
1845 (env->has_hv_mode && !FIELD_EX64_HV(env->msr) && !lpes0)) {
1846 return PPC_INTERRUPT_EXT;
1847 }
1848 }
1849 if (msr_ee != 0) {
1850 /* Decrementer exception */
1851 if (env->pending_interrupts & PPC_INTERRUPT_DECR) {
1852 return PPC_INTERRUPT_DECR;
1853 }
1854 if (env->pending_interrupts & PPC_INTERRUPT_DOORBELL) {
1855 return PPC_INTERRUPT_DOORBELL;
1856 }
1857 if (env->pending_interrupts & PPC_INTERRUPT_HDOORBELL) {
1858 return PPC_INTERRUPT_HDOORBELL;
1859 }
1860 if (env->pending_interrupts & PPC_INTERRUPT_PERFM) {
1861 return PPC_INTERRUPT_PERFM;
1862 }
1863 /* EBB exception */
1864 if (env->pending_interrupts & PPC_INTERRUPT_EBB) {
1865 /*
1866 * EBB exception must be taken in problem state and
1867 * with BESCR_GE set.
1868 */
1869 if (FIELD_EX64(env->msr, MSR, PR) &&
1870 (env->spr[SPR_BESCR] & BESCR_GE)) {
1871 return PPC_INTERRUPT_EBB;
1872 }
1873 }
1874 }
1875
1876 return 0;
1877 }
1878
1879 #define P9_UNUSED_INTERRUPTS \
1880 (PPC_INTERRUPT_RESET | PPC_INTERRUPT_DEBUG | PPC_INTERRUPT_CEXT | \
1881 PPC_INTERRUPT_WDT | PPC_INTERRUPT_CDOORBELL | PPC_INTERRUPT_FIT | \
1882 PPC_INTERRUPT_PIT | PPC_INTERRUPT_THERM)
1883
1884 static int p9_interrupt_powersave(CPUPPCState *env)
1885 {
1886 /* External Exception */
1887 if ((env->pending_interrupts & PPC_INTERRUPT_EXT) &&
1888 (env->spr[SPR_LPCR] & LPCR_EEE)) {
1889 bool heic = !!(env->spr[SPR_LPCR] & LPCR_HEIC);
1890 if (!heic || !FIELD_EX64_HV(env->msr) ||
1891 FIELD_EX64(env->msr, MSR, PR)) {
1892 return PPC_INTERRUPT_EXT;
1893 }
1894 }
1895 /* Decrementer Exception */
1896 if ((env->pending_interrupts & PPC_INTERRUPT_DECR) &&
1897 (env->spr[SPR_LPCR] & LPCR_DEE)) {
1898 return PPC_INTERRUPT_DECR;
1899 }
1900 /* Machine Check or Hypervisor Maintenance Exception */
1901 if (env->spr[SPR_LPCR] & LPCR_OEE) {
1902 if (env->pending_interrupts & PPC_INTERRUPT_MCK) {
1903 return PPC_INTERRUPT_MCK;
1904 }
1905 if (env->pending_interrupts & PPC_INTERRUPT_HMI) {
1906 return PPC_INTERRUPT_HMI;
1907 }
1908 }
1909 /* Privileged Doorbell Exception */
1910 if ((env->pending_interrupts & PPC_INTERRUPT_DOORBELL) &&
1911 (env->spr[SPR_LPCR] & LPCR_PDEE)) {
1912 return PPC_INTERRUPT_DOORBELL;
1913 }
1914 /* Hypervisor Doorbell Exception */
1915 if ((env->pending_interrupts & PPC_INTERRUPT_HDOORBELL) &&
1916 (env->spr[SPR_LPCR] & LPCR_HDEE)) {
1917 return PPC_INTERRUPT_HDOORBELL;
1918 }
1919 /* Hypervisor virtualization exception */
1920 if ((env->pending_interrupts & PPC_INTERRUPT_HVIRT) &&
1921 (env->spr[SPR_LPCR] & LPCR_HVEE)) {
1922 return PPC_INTERRUPT_HVIRT;
1923 }
1924 if (env->pending_interrupts & PPC_INTERRUPT_RESET) {
1925 return PPC_INTERRUPT_RESET;
1926 }
1927 return 0;
1928 }
1929
1930 static int p9_next_unmasked_interrupt(CPUPPCState *env)
1931 {
1932 PowerPCCPU *cpu = env_archcpu(env);
1933 CPUState *cs = CPU(cpu);
1934 /* Ignore MSR[EE] when coming out of some power management states */
1935 bool msr_ee = FIELD_EX64(env->msr, MSR, EE) || env->resume_as_sreset;
1936
1937 assert((env->pending_interrupts & P9_UNUSED_INTERRUPTS) == 0);
1938
1939 if (cs->halted) {
1940 if (env->spr[SPR_PSSCR] & PSSCR_EC) {
1941 /*
1942 * When PSSCR[EC] is set, LPCR[PECE] controls which interrupts can
1943 * wakeup the processor
1944 */
1945 return p9_interrupt_powersave(env);
1946 } else {
1947 /*
1948 * When it's clear, any system-caused exception exits power-saving
1949 * mode, even the ones that gate on MSR[EE].
1950 */
1951 msr_ee = true;
1952 }
1953 }
1954
1955 /* Machine check exception */
1956 if (env->pending_interrupts & PPC_INTERRUPT_MCK) {
1957 return PPC_INTERRUPT_MCK;
1958 }
1959
1960 /* Hypervisor decrementer exception */
1961 if (env->pending_interrupts & PPC_INTERRUPT_HDECR) {
1962 /* LPCR will be clear when not supported so this will work */
1963 bool hdice = !!(env->spr[SPR_LPCR] & LPCR_HDICE);
1964 if ((msr_ee || !FIELD_EX64_HV(env->msr)) && hdice) {
1965 /* HDEC clears on delivery */
1966 return PPC_INTERRUPT_HDECR;
1967 }
1968 }
1969
1970 /* Hypervisor virtualization interrupt */
1971 if (env->pending_interrupts & PPC_INTERRUPT_HVIRT) {
1972 /* LPCR will be clear when not supported so this will work */
1973 bool hvice = !!(env->spr[SPR_LPCR] & LPCR_HVICE);
1974 if ((msr_ee || !FIELD_EX64_HV(env->msr)) && hvice) {
1975 return PPC_INTERRUPT_HVIRT;
1976 }
1977 }
1978
1979 /* External interrupt can ignore MSR:EE under some circumstances */
1980 if (env->pending_interrupts & PPC_INTERRUPT_EXT) {
1981 bool lpes0 = !!(env->spr[SPR_LPCR] & LPCR_LPES0);
1982 bool heic = !!(env->spr[SPR_LPCR] & LPCR_HEIC);
1983 /* HEIC blocks delivery to the hypervisor */
1984 if ((msr_ee && !(heic && FIELD_EX64_HV(env->msr) &&
1985 !FIELD_EX64(env->msr, MSR, PR))) ||
1986 (env->has_hv_mode && !FIELD_EX64_HV(env->msr) && !lpes0)) {
1987 return PPC_INTERRUPT_EXT;
1988 }
1989 }
1990 if (msr_ee != 0) {
1991 /* Decrementer exception */
1992 if (env->pending_interrupts & PPC_INTERRUPT_DECR) {
1993 return PPC_INTERRUPT_DECR;
1994 }
1995 if (env->pending_interrupts & PPC_INTERRUPT_DOORBELL) {
1996 return PPC_INTERRUPT_DOORBELL;
1997 }
1998 if (env->pending_interrupts & PPC_INTERRUPT_HDOORBELL) {
1999 return PPC_INTERRUPT_HDOORBELL;
2000 }
2001 if (env->pending_interrupts & PPC_INTERRUPT_PERFM) {
2002 return PPC_INTERRUPT_PERFM;
2003 }
2004 /* EBB exception */
2005 if (env->pending_interrupts & PPC_INTERRUPT_EBB) {
2006 /*
2007 * EBB exception must be taken in problem state and
2008 * with BESCR_GE set.
2009 */
2010 if (FIELD_EX64(env->msr, MSR, PR) &&
2011 (env->spr[SPR_BESCR] & BESCR_GE)) {
2012 return PPC_INTERRUPT_EBB;
2013 }
2014 }
2015 }
2016
2017 return 0;
2018 }
2019 #endif
2020
2021 static int ppc_next_unmasked_interrupt_generic(CPUPPCState *env)
2022 {
2023 bool async_deliver;
2024
2025 /* External reset */
2026 if (env->pending_interrupts & PPC_INTERRUPT_RESET) {
2027 return PPC_INTERRUPT_RESET;
2028 }
2029 /* Machine check exception */
2030 if (env->pending_interrupts & PPC_INTERRUPT_MCK) {
2031 return PPC_INTERRUPT_MCK;
2032 }
2033 #if 0 /* TODO */
2034 /* External debug exception */
2035 if (env->pending_interrupts & PPC_INTERRUPT_DEBUG) {
2036 return PPC_INTERRUPT_DEBUG;
2037 }
2038 #endif
2039
2040 /*
2041 * For interrupts that gate on MSR:EE, we need to do something a
2042 * bit more subtle, as we need to let them through even when EE is
2043 * clear when coming out of some power management states (in order
2044 * for them to become a 0x100).
2045 */
2046 async_deliver = FIELD_EX64(env->msr, MSR, EE) || env->resume_as_sreset;
2047
2048 /* Hypervisor decrementer exception */
2049 if (env->pending_interrupts & PPC_INTERRUPT_HDECR) {
2050 /* LPCR will be clear when not supported so this will work */
2051 bool hdice = !!(env->spr[SPR_LPCR] & LPCR_HDICE);
2052 if ((async_deliver || !FIELD_EX64_HV(env->msr)) && hdice) {
2053 /* HDEC clears on delivery */
2054 return PPC_INTERRUPT_HDECR;
2055 }
2056 }
2057
2058 /* Hypervisor virtualization interrupt */
2059 if (env->pending_interrupts & PPC_INTERRUPT_HVIRT) {
2060 /* LPCR will be clear when not supported so this will work */
2061 bool hvice = !!(env->spr[SPR_LPCR] & LPCR_HVICE);
2062 if ((async_deliver || !FIELD_EX64_HV(env->msr)) && hvice) {
2063 return PPC_INTERRUPT_HVIRT;
2064 }
2065 }
2066
2067 /* External interrupt can ignore MSR:EE under some circumstances */
2068 if (env->pending_interrupts & PPC_INTERRUPT_EXT) {
2069 bool lpes0 = !!(env->spr[SPR_LPCR] & LPCR_LPES0);
2070 bool heic = !!(env->spr[SPR_LPCR] & LPCR_HEIC);
2071 /* HEIC blocks delivery to the hypervisor */
2072 if ((async_deliver && !(heic && FIELD_EX64_HV(env->msr) &&
2073 !FIELD_EX64(env->msr, MSR, PR))) ||
2074 (env->has_hv_mode && !FIELD_EX64_HV(env->msr) && !lpes0)) {
2075 return PPC_INTERRUPT_EXT;
2076 }
2077 }
2078 if (FIELD_EX64(env->msr, MSR, CE)) {
2079 /* External critical interrupt */
2080 if (env->pending_interrupts & PPC_INTERRUPT_CEXT) {
2081 return PPC_INTERRUPT_CEXT;
2082 }
2083 }
2084 if (async_deliver != 0) {
2085 /* Watchdog timer on embedded PowerPC */
2086 if (env->pending_interrupts & PPC_INTERRUPT_WDT) {
2087 return PPC_INTERRUPT_WDT;
2088 }
2089 if (env->pending_interrupts & PPC_INTERRUPT_CDOORBELL) {
2090 return PPC_INTERRUPT_CDOORBELL;
2091 }
2092 /* Fixed interval timer on embedded PowerPC */
2093 if (env->pending_interrupts & PPC_INTERRUPT_FIT) {
2094 return PPC_INTERRUPT_FIT;
2095 }
2096 /* Programmable interval timer on embedded PowerPC */
2097 if (env->pending_interrupts & PPC_INTERRUPT_PIT) {
2098 return PPC_INTERRUPT_PIT;
2099 }
2100 /* Decrementer exception */
2101 if (env->pending_interrupts & PPC_INTERRUPT_DECR) {
2102 return PPC_INTERRUPT_DECR;
2103 }
2104 if (env->pending_interrupts & PPC_INTERRUPT_DOORBELL) {
2105 return PPC_INTERRUPT_DOORBELL;
2106 }
2107 if (env->pending_interrupts & PPC_INTERRUPT_HDOORBELL) {
2108 return PPC_INTERRUPT_HDOORBELL;
2109 }
2110 if (env->pending_interrupts & PPC_INTERRUPT_PERFM) {
2111 return PPC_INTERRUPT_PERFM;
2112 }
2113 /* Thermal interrupt */
2114 if (env->pending_interrupts & PPC_INTERRUPT_THERM) {
2115 return PPC_INTERRUPT_THERM;
2116 }
2117 /* EBB exception */
2118 if (env->pending_interrupts & PPC_INTERRUPT_EBB) {
2119 /*
2120 * EBB exception must be taken in problem state and
2121 * with BESCR_GE set.
2122 */
2123 if (FIELD_EX64(env->msr, MSR, PR) &&
2124 (env->spr[SPR_BESCR] & BESCR_GE)) {
2125 return PPC_INTERRUPT_EBB;
2126 }
2127 }
2128 }
2129
2130 return 0;
2131 }
2132
2133 static int ppc_next_unmasked_interrupt(CPUPPCState *env)
2134 {
2135 switch (env->excp_model) {
2136 #if defined(TARGET_PPC64)
2137 case POWERPC_EXCP_POWER7:
2138 return p7_next_unmasked_interrupt(env);
2139 case POWERPC_EXCP_POWER8:
2140 return p8_next_unmasked_interrupt(env);
2141 case POWERPC_EXCP_POWER9:
2142 case POWERPC_EXCP_POWER10:
2143 return p9_next_unmasked_interrupt(env);
2144 #endif
2145 default:
2146 return ppc_next_unmasked_interrupt_generic(env);
2147 }
2148 }
2149
2150 /*
2151 * Sets CPU_INTERRUPT_HARD if there is at least one unmasked interrupt to be
2152 * delivered and clears CPU_INTERRUPT_HARD otherwise.
2153 *
2154 * This method is called by ppc_set_interrupt when an interrupt is raised or
2155 * lowered, and should also be called whenever an interrupt masking condition
2156 * is changed, e.g.:
2157 * - When relevant bits of MSR are altered, like EE, HV, PR, etc.;
2158 * - When relevant bits of LPCR are altered, like PECE, HDICE, HVICE, etc.;
2159 * - When PSSCR[EC] or env->resume_as_sreset are changed;
2160 * - When cs->halted is changed and the CPU has a different interrupt masking
2161 * logic in power-saving mode (e.g., POWER7/8/9/10);
2162 */
2163 void ppc_maybe_interrupt(CPUPPCState *env)
2164 {
2165 CPUState *cs = env_cpu(env);
2166 bool locked = false;
2167
2168 if (!qemu_mutex_iothread_locked()) {
2169 locked = true;
2170 qemu_mutex_lock_iothread();
2171 }
2172
2173 if (ppc_next_unmasked_interrupt(env)) {
2174 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
2175 } else {
2176 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
2177 }
2178
2179 if (locked) {
2180 qemu_mutex_unlock_iothread();
2181 }
2182 }
2183
2184 #if defined(TARGET_PPC64)
2185 static void p7_deliver_interrupt(CPUPPCState *env, int interrupt)
2186 {
2187 PowerPCCPU *cpu = env_archcpu(env);
2188 CPUState *cs = env_cpu(env);
2189
2190 switch (interrupt) {
2191 case PPC_INTERRUPT_MCK: /* Machine check exception */
2192 env->pending_interrupts &= ~PPC_INTERRUPT_MCK;
2193 powerpc_excp(cpu, POWERPC_EXCP_MCHECK);
2194 break;
2195
2196 case PPC_INTERRUPT_HDECR: /* Hypervisor decrementer exception */
2197 /* HDEC clears on delivery */
2198 env->pending_interrupts &= ~PPC_INTERRUPT_HDECR;
2199 powerpc_excp(cpu, POWERPC_EXCP_HDECR);
2200 break;
2201
2202 case PPC_INTERRUPT_EXT:
2203 if (books_vhyp_promotes_external_to_hvirt(cpu)) {
2204 powerpc_excp(cpu, POWERPC_EXCP_HVIRT);
2205 } else {
2206 powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL);
2207 }
2208 break;
2209
2210 case PPC_INTERRUPT_DECR: /* Decrementer exception */
2211 powerpc_excp(cpu, POWERPC_EXCP_DECR);
2212 break;
2213 case PPC_INTERRUPT_PERFM:
2214 env->pending_interrupts &= ~PPC_INTERRUPT_PERFM;
2215 powerpc_excp(cpu, POWERPC_EXCP_PERFM);
2216 break;
2217 case 0:
2218 /*
2219 * This is a bug ! It means that has_work took us out of halt without
2220 * anything to deliver while in a PM state that requires getting
2221 * out via a 0x100
2222 *
2223 * This means we will incorrectly execute past the power management
2224 * instruction instead of triggering a reset.
2225 *
2226 * It generally means a discrepancy between the wakeup conditions in the
2227 * processor has_work implementation and the logic in this function.
2228 */
2229 assert(!env->resume_as_sreset);
2230 break;
2231 default:
2232 cpu_abort(cs, "Invalid PowerPC interrupt %d. Aborting\n", interrupt);
2233 }
2234 }
2235
2236 static void p8_deliver_interrupt(CPUPPCState *env, int interrupt)
2237 {
2238 PowerPCCPU *cpu = env_archcpu(env);
2239 CPUState *cs = env_cpu(env);
2240
2241 switch (interrupt) {
2242 case PPC_INTERRUPT_MCK: /* Machine check exception */
2243 env->pending_interrupts &= ~PPC_INTERRUPT_MCK;
2244 powerpc_excp(cpu, POWERPC_EXCP_MCHECK);
2245 break;
2246
2247 case PPC_INTERRUPT_HDECR: /* Hypervisor decrementer exception */
2248 /* HDEC clears on delivery */
2249 env->pending_interrupts &= ~PPC_INTERRUPT_HDECR;
2250 powerpc_excp(cpu, POWERPC_EXCP_HDECR);
2251 break;
2252
2253 case PPC_INTERRUPT_EXT:
2254 if (books_vhyp_promotes_external_to_hvirt(cpu)) {
2255 powerpc_excp(cpu, POWERPC_EXCP_HVIRT);
2256 } else {
2257 powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL);
2258 }
2259 break;
2260
2261 case PPC_INTERRUPT_DECR: /* Decrementer exception */
2262 powerpc_excp(cpu, POWERPC_EXCP_DECR);
2263 break;
2264 case PPC_INTERRUPT_DOORBELL:
2265 env->pending_interrupts &= ~PPC_INTERRUPT_DOORBELL;
2266 if (is_book3s_arch2x(env)) {
2267 powerpc_excp(cpu, POWERPC_EXCP_SDOOR);
2268 } else {
2269 powerpc_excp(cpu, POWERPC_EXCP_DOORI);
2270 }
2271 break;
2272 case PPC_INTERRUPT_HDOORBELL:
2273 env->pending_interrupts &= ~PPC_INTERRUPT_HDOORBELL;
2274 powerpc_excp(cpu, POWERPC_EXCP_SDOOR_HV);
2275 break;
2276 case PPC_INTERRUPT_PERFM:
2277 env->pending_interrupts &= ~PPC_INTERRUPT_PERFM;
2278 powerpc_excp(cpu, POWERPC_EXCP_PERFM);
2279 break;
2280 case PPC_INTERRUPT_EBB: /* EBB exception */
2281 env->pending_interrupts &= ~PPC_INTERRUPT_EBB;
2282 if (env->spr[SPR_BESCR] & BESCR_PMEO) {
2283 powerpc_excp(cpu, POWERPC_EXCP_PERFM_EBB);
2284 } else if (env->spr[SPR_BESCR] & BESCR_EEO) {
2285 powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL_EBB);
2286 }
2287 break;
2288 case 0:
2289 /*
2290 * This is a bug ! It means that has_work took us out of halt without
2291 * anything to deliver while in a PM state that requires getting
2292 * out via a 0x100
2293 *
2294 * This means we will incorrectly execute past the power management
2295 * instruction instead of triggering a reset.
2296 *
2297 * It generally means a discrepancy between the wakeup conditions in the
2298 * processor has_work implementation and the logic in this function.
2299 */
2300 assert(!env->resume_as_sreset);
2301 break;
2302 default:
2303 cpu_abort(cs, "Invalid PowerPC interrupt %d. Aborting\n", interrupt);
2304 }
2305 }
2306
2307 static void p9_deliver_interrupt(CPUPPCState *env, int interrupt)
2308 {
2309 PowerPCCPU *cpu = env_archcpu(env);
2310 CPUState *cs = env_cpu(env);
2311
2312 if (cs->halted && !(env->spr[SPR_PSSCR] & PSSCR_EC) &&
2313 !FIELD_EX64(env->msr, MSR, EE)) {
2314 /*
2315 * A pending interrupt took us out of power-saving, but MSR[EE] says
2316 * that we should return to NIP+4 instead of delivering it.
2317 */
2318 return;
2319 }
2320
2321 switch (interrupt) {
2322 case PPC_INTERRUPT_MCK: /* Machine check exception */
2323 env->pending_interrupts &= ~PPC_INTERRUPT_MCK;
2324 powerpc_excp(cpu, POWERPC_EXCP_MCHECK);
2325 break;
2326
2327 case PPC_INTERRUPT_HDECR: /* Hypervisor decrementer exception */
2328 /* HDEC clears on delivery */
2329 env->pending_interrupts &= ~PPC_INTERRUPT_HDECR;
2330 powerpc_excp(cpu, POWERPC_EXCP_HDECR);
2331 break;
2332 case PPC_INTERRUPT_HVIRT: /* Hypervisor virtualization interrupt */
2333 powerpc_excp(cpu, POWERPC_EXCP_HVIRT);
2334 break;
2335
2336 case PPC_INTERRUPT_EXT:
2337 if (books_vhyp_promotes_external_to_hvirt(cpu)) {
2338 powerpc_excp(cpu, POWERPC_EXCP_HVIRT);
2339 } else {
2340 powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL);
2341 }
2342 break;
2343
2344 case PPC_INTERRUPT_DECR: /* Decrementer exception */
2345 powerpc_excp(cpu, POWERPC_EXCP_DECR);
2346 break;
2347 case PPC_INTERRUPT_DOORBELL:
2348 env->pending_interrupts &= ~PPC_INTERRUPT_DOORBELL;
2349 powerpc_excp(cpu, POWERPC_EXCP_SDOOR);
2350 break;
2351 case PPC_INTERRUPT_HDOORBELL:
2352 env->pending_interrupts &= ~PPC_INTERRUPT_HDOORBELL;
2353 powerpc_excp(cpu, POWERPC_EXCP_SDOOR_HV);
2354 break;
2355 case PPC_INTERRUPT_PERFM:
2356 env->pending_interrupts &= ~PPC_INTERRUPT_PERFM;
2357 powerpc_excp(cpu, POWERPC_EXCP_PERFM);
2358 break;
2359 case PPC_INTERRUPT_EBB: /* EBB exception */
2360 env->pending_interrupts &= ~PPC_INTERRUPT_EBB;
2361 if (env->spr[SPR_BESCR] & BESCR_PMEO) {
2362 powerpc_excp(cpu, POWERPC_EXCP_PERFM_EBB);
2363 } else if (env->spr[SPR_BESCR] & BESCR_EEO) {
2364 powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL_EBB);
2365 }
2366 break;
2367 case 0:
2368 /*
2369 * This is a bug ! It means that has_work took us out of halt without
2370 * anything to deliver while in a PM state that requires getting
2371 * out via a 0x100
2372 *
2373 * This means we will incorrectly execute past the power management
2374 * instruction instead of triggering a reset.
2375 *
2376 * It generally means a discrepancy between the wakeup conditions in the
2377 * processor has_work implementation and the logic in this function.
2378 */
2379 assert(!env->resume_as_sreset);
2380 break;
2381 default:
2382 cpu_abort(cs, "Invalid PowerPC interrupt %d. Aborting\n", interrupt);
2383 }
2384 }
2385 #endif
2386
2387 static void ppc_deliver_interrupt_generic(CPUPPCState *env, int interrupt)
2388 {
2389 PowerPCCPU *cpu = env_archcpu(env);
2390 CPUState *cs = env_cpu(env);
2391
2392 switch (interrupt) {
2393 case PPC_INTERRUPT_RESET: /* External reset */
2394 env->pending_interrupts &= ~PPC_INTERRUPT_RESET;
2395 powerpc_excp(cpu, POWERPC_EXCP_RESET);
2396 break;
2397 case PPC_INTERRUPT_MCK: /* Machine check exception */
2398 env->pending_interrupts &= ~PPC_INTERRUPT_MCK;
2399 powerpc_excp(cpu, POWERPC_EXCP_MCHECK);
2400 break;
2401
2402 case PPC_INTERRUPT_HDECR: /* Hypervisor decrementer exception */
2403 /* HDEC clears on delivery */
2404 env->pending_interrupts &= ~PPC_INTERRUPT_HDECR;
2405 powerpc_excp(cpu, POWERPC_EXCP_HDECR);
2406 break;
2407 case PPC_INTERRUPT_HVIRT: /* Hypervisor virtualization interrupt */
2408 powerpc_excp(cpu, POWERPC_EXCP_HVIRT);
2409 break;
2410
2411 case PPC_INTERRUPT_EXT:
2412 if (books_vhyp_promotes_external_to_hvirt(cpu)) {
2413 powerpc_excp(cpu, POWERPC_EXCP_HVIRT);
2414 } else {
2415 powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL);
2416 }
2417 break;
2418 case PPC_INTERRUPT_CEXT: /* External critical interrupt */
2419 powerpc_excp(cpu, POWERPC_EXCP_CRITICAL);
2420 break;
2421
2422 case PPC_INTERRUPT_WDT: /* Watchdog timer on embedded PowerPC */
2423 env->pending_interrupts &= ~PPC_INTERRUPT_WDT;
2424 powerpc_excp(cpu, POWERPC_EXCP_WDT);
2425 break;
2426 case PPC_INTERRUPT_CDOORBELL:
2427 env->pending_interrupts &= ~PPC_INTERRUPT_CDOORBELL;
2428 powerpc_excp(cpu, POWERPC_EXCP_DOORCI);
2429 break;
2430 case PPC_INTERRUPT_FIT: /* Fixed interval timer on embedded PowerPC */
2431 env->pending_interrupts &= ~PPC_INTERRUPT_FIT;
2432 powerpc_excp(cpu, POWERPC_EXCP_FIT);
2433 break;
2434 case PPC_INTERRUPT_PIT: /* Programmable interval timer on embedded ppc */
2435 env->pending_interrupts &= ~PPC_INTERRUPT_PIT;
2436 powerpc_excp(cpu, POWERPC_EXCP_PIT);
2437 break;
2438 case PPC_INTERRUPT_DECR: /* Decrementer exception */
2439 if (ppc_decr_clear_on_delivery(env)) {
2440 env->pending_interrupts &= ~PPC_INTERRUPT_DECR;
2441 }
2442 powerpc_excp(cpu, POWERPC_EXCP_DECR);
2443 break;
2444 case PPC_INTERRUPT_DOORBELL:
2445 env->pending_interrupts &= ~PPC_INTERRUPT_DOORBELL;
2446 if (is_book3s_arch2x(env)) {
2447 powerpc_excp(cpu, POWERPC_EXCP_SDOOR);
2448 } else {
2449 powerpc_excp(cpu, POWERPC_EXCP_DOORI);
2450 }
2451 break;
2452 case PPC_INTERRUPT_HDOORBELL:
2453 env->pending_interrupts &= ~PPC_INTERRUPT_HDOORBELL;
2454 powerpc_excp(cpu, POWERPC_EXCP_SDOOR_HV);
2455 break;
2456 case PPC_INTERRUPT_PERFM:
2457 env->pending_interrupts &= ~PPC_INTERRUPT_PERFM;
2458 powerpc_excp(cpu, POWERPC_EXCP_PERFM);
2459 break;
2460 case PPC_INTERRUPT_THERM: /* Thermal interrupt */
2461 env->pending_interrupts &= ~PPC_INTERRUPT_THERM;
2462 powerpc_excp(cpu, POWERPC_EXCP_THERM);
2463 break;
2464 case PPC_INTERRUPT_EBB: /* EBB exception */
2465 env->pending_interrupts &= ~PPC_INTERRUPT_EBB;
2466 if (env->spr[SPR_BESCR] & BESCR_PMEO) {
2467 powerpc_excp(cpu, POWERPC_EXCP_PERFM_EBB);
2468 } else if (env->spr[SPR_BESCR] & BESCR_EEO) {
2469 powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL_EBB);
2470 }
2471 break;
2472 case 0:
2473 /*
2474 * This is a bug ! It means that has_work took us out of halt without
2475 * anything to deliver while in a PM state that requires getting
2476 * out via a 0x100
2477 *
2478 * This means we will incorrectly execute past the power management
2479 * instruction instead of triggering a reset.
2480 *
2481 * It generally means a discrepancy between the wakeup conditions in the
2482 * processor has_work implementation and the logic in this function.
2483 */
2484 assert(!env->resume_as_sreset);
2485 break;
2486 default:
2487 cpu_abort(cs, "Invalid PowerPC interrupt %d. Aborting\n", interrupt);
2488 }
2489 }
2490
2491 static void ppc_deliver_interrupt(CPUPPCState *env, int interrupt)
2492 {
2493 switch (env->excp_model) {
2494 #if defined(TARGET_PPC64)
2495 case POWERPC_EXCP_POWER7:
2496 p7_deliver_interrupt(env, interrupt);
2497 break;
2498 case POWERPC_EXCP_POWER8:
2499 p8_deliver_interrupt(env, interrupt);
2500 break;
2501 case POWERPC_EXCP_POWER9:
2502 case POWERPC_EXCP_POWER10:
2503 p9_deliver_interrupt(env, interrupt);
2504 break;
2505 #endif
2506 default:
2507 ppc_deliver_interrupt_generic(env, interrupt);
2508 }
2509 }
2510
2511 void ppc_cpu_do_system_reset(CPUState *cs)
2512 {
2513 PowerPCCPU *cpu = POWERPC_CPU(cs);
2514
2515 powerpc_excp(cpu, POWERPC_EXCP_RESET);
2516 }
2517
2518 void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector)
2519 {
2520 PowerPCCPU *cpu = POWERPC_CPU(cs);
2521 CPUPPCState *env = &cpu->env;
2522 target_ulong msr = 0;
2523
2524 /*
2525 * Set MSR and NIP for the handler, SRR0/1, DAR and DSISR have already
2526 * been set by KVM.
2527 */
2528 msr = (1ULL << MSR_ME);
2529 msr |= env->msr & (1ULL << MSR_SF);
2530 if (ppc_interrupts_little_endian(cpu, false)) {
2531 msr |= (1ULL << MSR_LE);
2532 }
2533
2534 /* Anything for nested required here? MSR[HV] bit? */
2535
2536 powerpc_set_excp_state(cpu, vector, msr);
2537 }
2538
2539 bool ppc_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
2540 {
2541 PowerPCCPU *cpu = POWERPC_CPU(cs);
2542 CPUPPCState *env = &cpu->env;
2543 int interrupt;
2544
2545 if ((interrupt_request & CPU_INTERRUPT_HARD) == 0) {
2546 return false;
2547 }
2548
2549 interrupt = ppc_next_unmasked_interrupt(env);
2550 if (interrupt == 0) {
2551 return false;
2552 }
2553
2554 ppc_deliver_interrupt(env, interrupt);
2555 if (env->pending_interrupts == 0) {
2556 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
2557 }
2558 return true;
2559 }
2560
2561 #endif /* !CONFIG_USER_ONLY */
2562
2563 /*****************************************************************************/
2564 /* Exceptions processing helpers */
2565
2566 void raise_exception_err_ra(CPUPPCState *env, uint32_t exception,
2567 uint32_t error_code, uintptr_t raddr)
2568 {
2569 CPUState *cs = env_cpu(env);
2570
2571 cs->exception_index = exception;
2572 env->error_code = error_code;
2573 cpu_loop_exit_restore(cs, raddr);
2574 }
2575
2576 void raise_exception_err(CPUPPCState *env, uint32_t exception,
2577 uint32_t error_code)
2578 {
2579 raise_exception_err_ra(env, exception, error_code, 0);
2580 }
2581
2582 void raise_exception(CPUPPCState *env, uint32_t exception)
2583 {
2584 raise_exception_err_ra(env, exception, 0, 0);
2585 }
2586
2587 void raise_exception_ra(CPUPPCState *env, uint32_t exception,
2588 uintptr_t raddr)
2589 {
2590 raise_exception_err_ra(env, exception, 0, raddr);
2591 }
2592
2593 #ifdef CONFIG_TCG
2594 void helper_raise_exception_err(CPUPPCState *env, uint32_t exception,
2595 uint32_t error_code)
2596 {
2597 raise_exception_err_ra(env, exception, error_code, 0);
2598 }
2599
2600 void helper_raise_exception(CPUPPCState *env, uint32_t exception)
2601 {
2602 raise_exception_err_ra(env, exception, 0, 0);
2603 }
2604 #endif
2605
2606 #if !defined(CONFIG_USER_ONLY)
2607 #ifdef CONFIG_TCG
2608 void helper_store_msr(CPUPPCState *env, target_ulong val)
2609 {
2610 uint32_t excp = hreg_store_msr(env, val, 0);
2611
2612 if (excp != 0) {
2613 CPUState *cs = env_cpu(env);
2614 cpu_interrupt_exittb(cs);
2615 raise_exception(env, excp);
2616 }
2617 }
2618
2619 void helper_ppc_maybe_interrupt(CPUPPCState *env)
2620 {
2621 ppc_maybe_interrupt(env);
2622 }
2623
2624 #if defined(TARGET_PPC64)
2625 void helper_scv(CPUPPCState *env, uint32_t lev)
2626 {
2627 if (env->spr[SPR_FSCR] & (1ull << FSCR_SCV)) {
2628 raise_exception_err(env, POWERPC_EXCP_SYSCALL_VECTORED, lev);
2629 } else {
2630 raise_exception_err(env, POWERPC_EXCP_FU, FSCR_IC_SCV);
2631 }
2632 }
2633
2634 void helper_pminsn(CPUPPCState *env, powerpc_pm_insn_t insn)
2635 {
2636 CPUState *cs;
2637
2638 cs = env_cpu(env);
2639 cs->halted = 1;
2640
2641 /* Condition for waking up at 0x100 */
2642 env->resume_as_sreset = (insn != PPC_PM_STOP) ||
2643 (env->spr[SPR_PSSCR] & PSSCR_EC);
2644
2645 ppc_maybe_interrupt(env);
2646 }
2647 #endif /* defined(TARGET_PPC64) */
2648
2649 static void do_rfi(CPUPPCState *env, target_ulong nip, target_ulong msr)
2650 {
2651 CPUState *cs = env_cpu(env);
2652
2653 /* MSR:POW cannot be set by any form of rfi */
2654 msr &= ~(1ULL << MSR_POW);
2655
2656 /* MSR:TGPR cannot be set by any form of rfi */
2657 if (env->flags & POWERPC_FLAG_TGPR)
2658 msr &= ~(1ULL << MSR_TGPR);
2659
2660 #if defined(TARGET_PPC64)
2661 /* Switching to 32-bit ? Crop the nip */
2662 if (!msr_is_64bit(env, msr)) {
2663 nip = (uint32_t)nip;
2664 }
2665 #else
2666 nip = (uint32_t)nip;
2667 #endif
2668 /* XXX: beware: this is false if VLE is supported */
2669 env->nip = nip & ~((target_ulong)0x00000003);
2670 hreg_store_msr(env, msr, 1);
2671 trace_ppc_excp_rfi(env->nip, env->msr);
2672 /*
2673 * No need to raise an exception here, as rfi is always the last
2674 * insn of a TB
2675 */
2676 cpu_interrupt_exittb(cs);
2677 /* Reset the reservation */
2678 env->reserve_addr = -1;
2679
2680 /* Context synchronizing: check if TCG TLB needs flush */
2681 check_tlb_flush(env, false);
2682 }
2683
2684 void helper_rfi(CPUPPCState *env)
2685 {
2686 do_rfi(env, env->spr[SPR_SRR0], env->spr[SPR_SRR1] & 0xfffffffful);
2687 }
2688
2689 #if defined(TARGET_PPC64)
2690 void helper_rfid(CPUPPCState *env)
2691 {
2692 /*
2693 * The architecture defines a number of rules for which bits can
2694 * change but in practice, we handle this in hreg_store_msr()
2695 * which will be called by do_rfi(), so there is no need to filter
2696 * here
2697 */
2698 do_rfi(env, env->spr[SPR_SRR0], env->spr[SPR_SRR1]);
2699 }
2700
2701 void helper_rfscv(CPUPPCState *env)
2702 {
2703 do_rfi(env, env->lr, env->ctr);
2704 }
2705
2706 void helper_hrfid(CPUPPCState *env)
2707 {
2708 do_rfi(env, env->spr[SPR_HSRR0], env->spr[SPR_HSRR1]);
2709 }
2710 #endif
2711
2712 #if defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY)
2713 void helper_rfebb(CPUPPCState *env, target_ulong s)
2714 {
2715 target_ulong msr = env->msr;
2716
2717 /*
2718 * Handling of BESCR bits 32:33 according to PowerISA v3.1:
2719 *
2720 * "If BESCR 32:33 != 0b00 the instruction is treated as if
2721 * the instruction form were invalid."
2722 */
2723 if (env->spr[SPR_BESCR] & BESCR_INVALID) {
2724 raise_exception_err(env, POWERPC_EXCP_PROGRAM,
2725 POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL);
2726 }
2727
2728 env->nip = env->spr[SPR_EBBRR];
2729
2730 /* Switching to 32-bit ? Crop the nip */
2731 if (!msr_is_64bit(env, msr)) {
2732 env->nip = (uint32_t)env->spr[SPR_EBBRR];
2733 }
2734
2735 if (s) {
2736 env->spr[SPR_BESCR] |= BESCR_GE;
2737 } else {
2738 env->spr[SPR_BESCR] &= ~BESCR_GE;
2739 }
2740 }
2741
2742 /*
2743 * Triggers or queues an 'ebb_excp' EBB exception. All checks
2744 * but FSCR, HFSCR and msr_pr must be done beforehand.
2745 *
2746 * PowerISA v3.1 isn't clear about whether an EBB should be
2747 * postponed or cancelled if the EBB facility is unavailable.
2748 * Our assumption here is that the EBB is cancelled if both
2749 * FSCR and HFSCR EBB facilities aren't available.
2750 */
2751 static void do_ebb(CPUPPCState *env, int ebb_excp)
2752 {
2753 PowerPCCPU *cpu = env_archcpu(env);
2754
2755 /*
2756 * FSCR_EBB and FSCR_IC_EBB are the same bits used with
2757 * HFSCR.
2758 */
2759 helper_fscr_facility_check(env, FSCR_EBB, 0, FSCR_IC_EBB);
2760 helper_hfscr_facility_check(env, FSCR_EBB, "EBB", FSCR_IC_EBB);
2761
2762 if (ebb_excp == POWERPC_EXCP_PERFM_EBB) {
2763 env->spr[SPR_BESCR] |= BESCR_PMEO;
2764 } else if (ebb_excp == POWERPC_EXCP_EXTERNAL_EBB) {
2765 env->spr[SPR_BESCR] |= BESCR_EEO;
2766 }
2767
2768 if (FIELD_EX64(env->msr, MSR, PR)) {
2769 powerpc_excp(cpu, ebb_excp);
2770 } else {
2771 ppc_set_irq(cpu, PPC_INTERRUPT_EBB, 1);
2772 }
2773 }
2774
2775 void raise_ebb_perfm_exception(CPUPPCState *env)
2776 {
2777 bool perfm_ebb_enabled = env->spr[SPR_POWER_MMCR0] & MMCR0_EBE &&
2778 env->spr[SPR_BESCR] & BESCR_PME &&
2779 env->spr[SPR_BESCR] & BESCR_GE;
2780
2781 if (!perfm_ebb_enabled) {
2782 return;
2783 }
2784
2785 do_ebb(env, POWERPC_EXCP_PERFM_EBB);
2786 }
2787 #endif
2788
2789 /*****************************************************************************/
2790 /* Embedded PowerPC specific helpers */
2791 void helper_40x_rfci(CPUPPCState *env)
2792 {
2793 do_rfi(env, env->spr[SPR_40x_SRR2], env->spr[SPR_40x_SRR3]);
2794 }
2795
2796 void helper_rfci(CPUPPCState *env)
2797 {
2798 do_rfi(env, env->spr[SPR_BOOKE_CSRR0], env->spr[SPR_BOOKE_CSRR1]);
2799 }
2800
2801 void helper_rfdi(CPUPPCState *env)
2802 {
2803 /* FIXME: choose CSRR1 or DSRR1 based on cpu type */
2804 do_rfi(env, env->spr[SPR_BOOKE_DSRR0], env->spr[SPR_BOOKE_DSRR1]);
2805 }
2806
2807 void helper_rfmci(CPUPPCState *env)
2808 {
2809 /* FIXME: choose CSRR1 or MCSRR1 based on cpu type */
2810 do_rfi(env, env->spr[SPR_BOOKE_MCSRR0], env->spr[SPR_BOOKE_MCSRR1]);
2811 }
2812 #endif /* CONFIG_TCG */
2813 #endif /* !defined(CONFIG_USER_ONLY) */
2814
2815 #ifdef CONFIG_TCG
2816 void helper_tw(CPUPPCState *env, target_ulong arg1, target_ulong arg2,
2817 uint32_t flags)
2818 {
2819 if (!likely(!(((int32_t)arg1 < (int32_t)arg2 && (flags & 0x10)) ||
2820 ((int32_t)arg1 > (int32_t)arg2 && (flags & 0x08)) ||
2821 ((int32_t)arg1 == (int32_t)arg2 && (flags & 0x04)) ||
2822 ((uint32_t)arg1 < (uint32_t)arg2 && (flags & 0x02)) ||
2823 ((uint32_t)arg1 > (uint32_t)arg2 && (flags & 0x01))))) {
2824 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM,
2825 POWERPC_EXCP_TRAP, GETPC());
2826 }
2827 }
2828
2829 #if defined(TARGET_PPC64)
2830 void helper_td(CPUPPCState *env, target_ulong arg1, target_ulong arg2,
2831 uint32_t flags)
2832 {
2833 if (!likely(!(((int64_t)arg1 < (int64_t)arg2 && (flags & 0x10)) ||
2834 ((int64_t)arg1 > (int64_t)arg2 && (flags & 0x08)) ||
2835 ((int64_t)arg1 == (int64_t)arg2 && (flags & 0x04)) ||
2836 ((uint64_t)arg1 < (uint64_t)arg2 && (flags & 0x02)) ||
2837 ((uint64_t)arg1 > (uint64_t)arg2 && (flags & 0x01))))) {
2838 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM,
2839 POWERPC_EXCP_TRAP, GETPC());
2840 }
2841 }
2842 #endif
2843 #endif
2844
2845 static uint32_t helper_SIMON_LIKE_32_64(uint32_t x, uint64_t key, uint32_t lane)
2846 {
2847 const uint16_t c = 0xfffc;
2848 const uint64_t z0 = 0xfa2561cdf44ac398ULL;
2849 uint16_t z = 0, temp;
2850 uint16_t k[32], eff_k[32], xleft[33], xright[33], fxleft[32];
2851
2852 for (int i = 3; i >= 0; i--) {
2853 k[i] = key & 0xffff;
2854 key >>= 16;
2855 }
2856 xleft[0] = x & 0xffff;
2857 xright[0] = (x >> 16) & 0xffff;
2858
2859 for (int i = 0; i < 28; i++) {
2860 z = (z0 >> (63 - i)) & 1;
2861 temp = ror16(k[i + 3], 3) ^ k[i + 1];
2862 k[i + 4] = c ^ z ^ k[i] ^ temp ^ ror16(temp, 1);
2863 }
2864
2865 for (int i = 0; i < 8; i++) {
2866 eff_k[4 * i + 0] = k[4 * i + ((0 + lane) % 4)];
2867 eff_k[4 * i + 1] = k[4 * i + ((1 + lane) % 4)];
2868 eff_k[4 * i + 2] = k[4 * i + ((2 + lane) % 4)];
2869 eff_k[4 * i + 3] = k[4 * i + ((3 + lane) % 4)];
2870 }
2871
2872 for (int i = 0; i < 32; i++) {
2873 fxleft[i] = (rol16(xleft[i], 1) &
2874 rol16(xleft[i], 8)) ^ rol16(xleft[i], 2);
2875 xleft[i + 1] = xright[i] ^ fxleft[i] ^ eff_k[i];
2876 xright[i + 1] = xleft[i];
2877 }
2878
2879 return (((uint32_t)xright[32]) << 16) | xleft[32];
2880 }
2881
2882 static uint64_t hash_digest(uint64_t ra, uint64_t rb, uint64_t key)
2883 {
2884 uint64_t stage0_h = 0ULL, stage0_l = 0ULL;
2885 uint64_t stage1_h, stage1_l;
2886
2887 for (int i = 0; i < 4; i++) {
2888 stage0_h |= ror64(rb & 0xff, 8 * (2 * i + 1));
2889 stage0_h |= ((ra >> 32) & 0xff) << (8 * 2 * i);
2890 stage0_l |= ror64((rb >> 32) & 0xff, 8 * (2 * i + 1));
2891 stage0_l |= (ra & 0xff) << (8 * 2 * i);
2892 rb >>= 8;
2893 ra >>= 8;
2894 }
2895
2896 stage1_h = (uint64_t)helper_SIMON_LIKE_32_64(stage0_h >> 32, key, 0) << 32;
2897 stage1_h |= helper_SIMON_LIKE_32_64(stage0_h, key, 1);
2898 stage1_l = (uint64_t)helper_SIMON_LIKE_32_64(stage0_l >> 32, key, 2) << 32;
2899 stage1_l |= helper_SIMON_LIKE_32_64(stage0_l, key, 3);
2900
2901 return stage1_h ^ stage1_l;
2902 }
2903
2904 #include "qemu/guest-random.h"
2905
2906 #define HELPER_HASH(op, key, store) \
2907 void helper_##op(CPUPPCState *env, target_ulong ea, target_ulong ra, \
2908 target_ulong rb) \
2909 { \
2910 uint64_t calculated_hash = hash_digest(ra, rb, key), loaded_hash; \
2911 \
2912 if (store) { \
2913 cpu_stq_data_ra(env, ea, calculated_hash, GETPC()); \
2914 } else { \
2915 loaded_hash = cpu_ldq_data_ra(env, ea, GETPC()); \
2916 if (loaded_hash != calculated_hash) { \
2917 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, \
2918 POWERPC_EXCP_TRAP, GETPC()); \
2919 } \
2920 } \
2921 }
2922
2923 HELPER_HASH(HASHST, env->spr[SPR_HASHKEYR], true)
2924 HELPER_HASH(HASHCHK, env->spr[SPR_HASHKEYR], false)
2925 HELPER_HASH(HASHSTP, env->spr[SPR_HASHPKEYR], true)
2926 HELPER_HASH(HASHCHKP, env->spr[SPR_HASHPKEYR], false)
2927
2928 #if !defined(CONFIG_USER_ONLY)
2929
2930 #ifdef CONFIG_TCG
2931
2932 /* Embedded.Processor Control */
2933 static int dbell2irq(target_ulong rb)
2934 {
2935 int msg = rb & DBELL_TYPE_MASK;
2936 int irq = -1;
2937
2938 switch (msg) {
2939 case DBELL_TYPE_DBELL:
2940 irq = PPC_INTERRUPT_DOORBELL;
2941 break;
2942 case DBELL_TYPE_DBELL_CRIT:
2943 irq = PPC_INTERRUPT_CDOORBELL;
2944 break;
2945 case DBELL_TYPE_G_DBELL:
2946 case DBELL_TYPE_G_DBELL_CRIT:
2947 case DBELL_TYPE_G_DBELL_MC:
2948 /* XXX implement */
2949 default:
2950 break;
2951 }
2952
2953 return irq;
2954 }
2955
2956 void helper_msgclr(CPUPPCState *env, target_ulong rb)
2957 {
2958 int irq = dbell2irq(rb);
2959
2960 if (irq < 0) {
2961 return;
2962 }
2963
2964 ppc_set_irq(env_archcpu(env), irq, 0);
2965 }
2966
2967 void helper_msgsnd(target_ulong rb)
2968 {
2969 int irq = dbell2irq(rb);
2970 int pir = rb & DBELL_PIRTAG_MASK;
2971 CPUState *cs;
2972
2973 if (irq < 0) {
2974 return;
2975 }
2976
2977 qemu_mutex_lock_iothread();
2978 CPU_FOREACH(cs) {
2979 PowerPCCPU *cpu = POWERPC_CPU(cs);
2980 CPUPPCState *cenv = &cpu->env;
2981
2982 if ((rb & DBELL_BRDCAST) || (cenv->spr[SPR_BOOKE_PIR] == pir)) {
2983 ppc_set_irq(cpu, irq, 1);
2984 }
2985 }
2986 qemu_mutex_unlock_iothread();
2987 }
2988
2989 /* Server Processor Control */
2990
2991 static bool dbell_type_server(target_ulong rb)
2992 {
2993 /*
2994 * A Directed Hypervisor Doorbell message is sent only if the
2995 * message type is 5. All other types are reserved and the
2996 * instruction is a no-op
2997 */
2998 return (rb & DBELL_TYPE_MASK) == DBELL_TYPE_DBELL_SERVER;
2999 }
3000
3001 void helper_book3s_msgclr(CPUPPCState *env, target_ulong rb)
3002 {
3003 if (!dbell_type_server(rb)) {
3004 return;
3005 }
3006
3007 ppc_set_irq(env_archcpu(env), PPC_INTERRUPT_HDOORBELL, 0);
3008 }
3009
3010 static void book3s_msgsnd_common(int pir, int irq)
3011 {
3012 CPUState *cs;
3013
3014 qemu_mutex_lock_iothread();
3015 CPU_FOREACH(cs) {
3016 PowerPCCPU *cpu = POWERPC_CPU(cs);
3017 CPUPPCState *cenv = &cpu->env;
3018
3019 /* TODO: broadcast message to all threads of the same processor */
3020 if (cenv->spr_cb[SPR_PIR].default_value == pir) {
3021 ppc_set_irq(cpu, irq, 1);
3022 }
3023 }
3024 qemu_mutex_unlock_iothread();
3025 }
3026
3027 void helper_book3s_msgsnd(target_ulong rb)
3028 {
3029 int pir = rb & DBELL_PROCIDTAG_MASK;
3030
3031 if (!dbell_type_server(rb)) {
3032 return;
3033 }
3034
3035 book3s_msgsnd_common(pir, PPC_INTERRUPT_HDOORBELL);
3036 }
3037
3038 #if defined(TARGET_PPC64)
3039 void helper_book3s_msgclrp(CPUPPCState *env, target_ulong rb)
3040 {
3041 helper_hfscr_facility_check(env, HFSCR_MSGP, "msgclrp", HFSCR_IC_MSGP);
3042
3043 if (!dbell_type_server(rb)) {
3044 return;
3045 }
3046
3047 ppc_set_irq(env_archcpu(env), PPC_INTERRUPT_HDOORBELL, 0);
3048 }
3049
3050 /*
3051 * sends a message to other threads that are on the same
3052 * multi-threaded processor
3053 */
3054 void helper_book3s_msgsndp(CPUPPCState *env, target_ulong rb)
3055 {
3056 int pir = env->spr_cb[SPR_PIR].default_value;
3057
3058 helper_hfscr_facility_check(env, HFSCR_MSGP, "msgsndp", HFSCR_IC_MSGP);
3059
3060 if (!dbell_type_server(rb)) {
3061 return;
3062 }
3063
3064 /* TODO: TCG supports only one thread */
3065
3066 book3s_msgsnd_common(pir, PPC_INTERRUPT_DOORBELL);
3067 }
3068 #endif /* TARGET_PPC64 */
3069
3070 void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
3071 MMUAccessType access_type,
3072 int mmu_idx, uintptr_t retaddr)
3073 {
3074 CPUPPCState *env = cs->env_ptr;
3075 uint32_t insn;
3076
3077 /* Restore state and reload the insn we executed, for filling in DSISR. */
3078 cpu_restore_state(cs, retaddr);
3079 insn = cpu_ldl_code(env, env->nip);
3080
3081 switch (env->mmu_model) {
3082 case POWERPC_MMU_SOFT_4xx:
3083 env->spr[SPR_40x_DEAR] = vaddr;
3084 break;
3085 case POWERPC_MMU_BOOKE:
3086 case POWERPC_MMU_BOOKE206:
3087 env->spr[SPR_BOOKE_DEAR] = vaddr;
3088 break;
3089 default:
3090 env->spr[SPR_DAR] = vaddr;
3091 break;
3092 }
3093
3094 cs->exception_index = POWERPC_EXCP_ALIGN;
3095 env->error_code = insn & 0x03FF0000;
3096 cpu_loop_exit(cs);
3097 }
3098 #endif /* CONFIG_TCG */
3099 #endif /* !CONFIG_USER_ONLY */
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