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1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License, version 2, as | |
4 | * published by the Free Software Foundation. | |
5 | * | |
6 | * This program is distributed in the hope that it will be useful, | |
7 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
8 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
9 | * GNU General Public License for more details. | |
10 | * | |
11 | * You should have received a copy of the GNU General Public License | |
12 | * along with this program; if not, write to the Free Software | |
13 | * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
14 | * | |
15 | * Copyright IBM Corp. 2007 | |
16 | * | |
17 | * Authors: Hollis Blanchard <hollisb@us.ibm.com> | |
18 | */ | |
19 | ||
20 | #include <linux/jiffies.h> | |
21 | #include <linux/timer.h> | |
22 | #include <linux/types.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/kvm_host.h> | |
25 | ||
26 | #include <asm/dcr.h> | |
27 | #include <asm/dcr-regs.h> | |
28 | #include <asm/time.h> | |
29 | #include <asm/byteorder.h> | |
30 | #include <asm/kvm_ppc.h> | |
31 | ||
32 | #include "44x_tlb.h" | |
33 | ||
34 | /* Instruction decoding */ | |
35 | static inline unsigned int get_op(u32 inst) | |
36 | { | |
37 | return inst >> 26; | |
38 | } | |
39 | ||
40 | static inline unsigned int get_xop(u32 inst) | |
41 | { | |
42 | return (inst >> 1) & 0x3ff; | |
43 | } | |
44 | ||
45 | static inline unsigned int get_sprn(u32 inst) | |
46 | { | |
47 | return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); | |
48 | } | |
49 | ||
50 | static inline unsigned int get_dcrn(u32 inst) | |
51 | { | |
52 | return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); | |
53 | } | |
54 | ||
55 | static inline unsigned int get_rt(u32 inst) | |
56 | { | |
57 | return (inst >> 21) & 0x1f; | |
58 | } | |
59 | ||
60 | static inline unsigned int get_rs(u32 inst) | |
61 | { | |
62 | return (inst >> 21) & 0x1f; | |
63 | } | |
64 | ||
65 | static inline unsigned int get_ra(u32 inst) | |
66 | { | |
67 | return (inst >> 16) & 0x1f; | |
68 | } | |
69 | ||
70 | static inline unsigned int get_rb(u32 inst) | |
71 | { | |
72 | return (inst >> 11) & 0x1f; | |
73 | } | |
74 | ||
75 | static inline unsigned int get_rc(u32 inst) | |
76 | { | |
77 | return inst & 0x1; | |
78 | } | |
79 | ||
80 | static inline unsigned int get_ws(u32 inst) | |
81 | { | |
82 | return (inst >> 11) & 0x1f; | |
83 | } | |
84 | ||
85 | static inline unsigned int get_d(u32 inst) | |
86 | { | |
87 | return inst & 0xffff; | |
88 | } | |
89 | ||
90 | static int tlbe_is_host_safe(const struct kvm_vcpu *vcpu, | |
91 | const struct tlbe *tlbe) | |
92 | { | |
93 | gpa_t gpa; | |
94 | ||
95 | if (!get_tlb_v(tlbe)) | |
96 | return 0; | |
97 | ||
98 | /* Does it match current guest AS? */ | |
99 | /* XXX what about IS != DS? */ | |
100 | if (get_tlb_ts(tlbe) != !!(vcpu->arch.msr & MSR_IS)) | |
101 | return 0; | |
102 | ||
103 | gpa = get_tlb_raddr(tlbe); | |
104 | if (!gfn_to_memslot(vcpu->kvm, gpa >> PAGE_SHIFT)) | |
105 | /* Mapping is not for RAM. */ | |
106 | return 0; | |
107 | ||
108 | return 1; | |
109 | } | |
110 | ||
111 | static int kvmppc_emul_tlbwe(struct kvm_vcpu *vcpu, u32 inst) | |
112 | { | |
113 | u64 eaddr; | |
114 | u64 raddr; | |
115 | u64 asid; | |
116 | u32 flags; | |
117 | struct tlbe *tlbe; | |
118 | unsigned int ra; | |
119 | unsigned int rs; | |
120 | unsigned int ws; | |
121 | unsigned int index; | |
122 | ||
123 | ra = get_ra(inst); | |
124 | rs = get_rs(inst); | |
125 | ws = get_ws(inst); | |
126 | ||
127 | index = vcpu->arch.gpr[ra]; | |
128 | if (index > PPC44x_TLB_SIZE) { | |
129 | printk("%s: index %d\n", __func__, index); | |
130 | kvmppc_dump_vcpu(vcpu); | |
131 | return EMULATE_FAIL; | |
132 | } | |
133 | ||
134 | tlbe = &vcpu->arch.guest_tlb[index]; | |
135 | ||
136 | /* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */ | |
137 | if (tlbe->word0 & PPC44x_TLB_VALID) { | |
138 | eaddr = get_tlb_eaddr(tlbe); | |
139 | asid = (tlbe->word0 & PPC44x_TLB_TS) | tlbe->tid; | |
140 | kvmppc_mmu_invalidate(vcpu, eaddr, asid); | |
141 | } | |
142 | ||
143 | switch (ws) { | |
144 | case PPC44x_TLB_PAGEID: | |
145 | tlbe->tid = vcpu->arch.mmucr & 0xff; | |
146 | tlbe->word0 = vcpu->arch.gpr[rs]; | |
147 | break; | |
148 | ||
149 | case PPC44x_TLB_XLAT: | |
150 | tlbe->word1 = vcpu->arch.gpr[rs]; | |
151 | break; | |
152 | ||
153 | case PPC44x_TLB_ATTRIB: | |
154 | tlbe->word2 = vcpu->arch.gpr[rs]; | |
155 | break; | |
156 | ||
157 | default: | |
158 | return EMULATE_FAIL; | |
159 | } | |
160 | ||
161 | if (tlbe_is_host_safe(vcpu, tlbe)) { | |
162 | eaddr = get_tlb_eaddr(tlbe); | |
163 | raddr = get_tlb_raddr(tlbe); | |
164 | asid = (tlbe->word0 & PPC44x_TLB_TS) | tlbe->tid; | |
165 | flags = tlbe->word2 & 0xffff; | |
166 | ||
167 | /* Create a 4KB mapping on the host. If the guest wanted a | |
168 | * large page, only the first 4KB is mapped here and the rest | |
169 | * are mapped on the fly. */ | |
170 | kvmppc_mmu_map(vcpu, eaddr, raddr >> PAGE_SHIFT, asid, flags); | |
171 | } | |
172 | ||
173 | return EMULATE_DONE; | |
174 | } | |
175 | ||
176 | static void kvmppc_emulate_dec(struct kvm_vcpu *vcpu) | |
177 | { | |
178 | if (vcpu->arch.tcr & TCR_DIE) { | |
179 | /* The decrementer ticks at the same rate as the timebase, so | |
180 | * that's how we convert the guest DEC value to the number of | |
181 | * host ticks. */ | |
182 | unsigned long nr_jiffies; | |
183 | ||
184 | nr_jiffies = vcpu->arch.dec / tb_ticks_per_jiffy; | |
185 | mod_timer(&vcpu->arch.dec_timer, | |
186 | get_jiffies_64() + nr_jiffies); | |
187 | } else { | |
188 | del_timer(&vcpu->arch.dec_timer); | |
189 | } | |
190 | } | |
191 | ||
192 | static void kvmppc_emul_rfi(struct kvm_vcpu *vcpu) | |
193 | { | |
194 | vcpu->arch.pc = vcpu->arch.srr0; | |
195 | kvmppc_set_msr(vcpu, vcpu->arch.srr1); | |
196 | } | |
197 | ||
198 | /* XXX to do: | |
199 | * lhax | |
200 | * lhaux | |
201 | * lswx | |
202 | * lswi | |
203 | * stswx | |
204 | * stswi | |
205 | * lha | |
206 | * lhau | |
207 | * lmw | |
208 | * stmw | |
209 | * | |
210 | * XXX is_bigendian should depend on MMU mapping or MSR[LE] | |
211 | */ | |
212 | int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu) | |
213 | { | |
214 | u32 inst = vcpu->arch.last_inst; | |
215 | u32 ea; | |
216 | int ra; | |
217 | int rb; | |
218 | int rc; | |
219 | int rs; | |
220 | int rt; | |
221 | int sprn; | |
222 | int dcrn; | |
223 | enum emulation_result emulated = EMULATE_DONE; | |
224 | int advance = 1; | |
225 | ||
226 | switch (get_op(inst)) { | |
227 | case 3: /* trap */ | |
228 | printk("trap!\n"); | |
229 | kvmppc_queue_exception(vcpu, BOOKE_INTERRUPT_PROGRAM); | |
230 | advance = 0; | |
231 | break; | |
232 | ||
233 | case 19: | |
234 | switch (get_xop(inst)) { | |
235 | case 50: /* rfi */ | |
236 | kvmppc_emul_rfi(vcpu); | |
237 | advance = 0; | |
238 | break; | |
239 | ||
240 | default: | |
241 | emulated = EMULATE_FAIL; | |
242 | break; | |
243 | } | |
244 | break; | |
245 | ||
246 | case 31: | |
247 | switch (get_xop(inst)) { | |
248 | ||
249 | case 83: /* mfmsr */ | |
250 | rt = get_rt(inst); | |
251 | vcpu->arch.gpr[rt] = vcpu->arch.msr; | |
252 | break; | |
253 | ||
254 | case 87: /* lbzx */ | |
255 | rt = get_rt(inst); | |
256 | emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); | |
257 | break; | |
258 | ||
259 | case 131: /* wrtee */ | |
260 | rs = get_rs(inst); | |
261 | vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE) | |
262 | | (vcpu->arch.gpr[rs] & MSR_EE); | |
263 | break; | |
264 | ||
265 | case 146: /* mtmsr */ | |
266 | rs = get_rs(inst); | |
267 | kvmppc_set_msr(vcpu, vcpu->arch.gpr[rs]); | |
268 | break; | |
269 | ||
270 | case 163: /* wrteei */ | |
271 | vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE) | |
272 | | (inst & MSR_EE); | |
273 | break; | |
274 | ||
275 | case 215: /* stbx */ | |
276 | rs = get_rs(inst); | |
277 | emulated = kvmppc_handle_store(run, vcpu, | |
278 | vcpu->arch.gpr[rs], | |
279 | 1, 1); | |
280 | break; | |
281 | ||
282 | case 247: /* stbux */ | |
283 | rs = get_rs(inst); | |
284 | ra = get_ra(inst); | |
285 | rb = get_rb(inst); | |
286 | ||
287 | ea = vcpu->arch.gpr[rb]; | |
288 | if (ra) | |
289 | ea += vcpu->arch.gpr[ra]; | |
290 | ||
291 | emulated = kvmppc_handle_store(run, vcpu, | |
292 | vcpu->arch.gpr[rs], | |
293 | 1, 1); | |
294 | vcpu->arch.gpr[rs] = ea; | |
295 | break; | |
296 | ||
297 | case 279: /* lhzx */ | |
298 | rt = get_rt(inst); | |
299 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); | |
300 | break; | |
301 | ||
302 | case 311: /* lhzux */ | |
303 | rt = get_rt(inst); | |
304 | ra = get_ra(inst); | |
305 | rb = get_rb(inst); | |
306 | ||
307 | ea = vcpu->arch.gpr[rb]; | |
308 | if (ra) | |
309 | ea += vcpu->arch.gpr[ra]; | |
310 | ||
311 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); | |
312 | vcpu->arch.gpr[ra] = ea; | |
313 | break; | |
314 | ||
315 | case 323: /* mfdcr */ | |
316 | dcrn = get_dcrn(inst); | |
317 | rt = get_rt(inst); | |
318 | ||
319 | /* The guest may access CPR0 registers to determine the timebase | |
320 | * frequency, and it must know the real host frequency because it | |
321 | * can directly access the timebase registers. | |
322 | * | |
323 | * It would be possible to emulate those accesses in userspace, | |
324 | * but userspace can really only figure out the end frequency. | |
325 | * We could decompose that into the factors that compute it, but | |
326 | * that's tricky math, and it's easier to just report the real | |
327 | * CPR0 values. | |
328 | */ | |
329 | switch (dcrn) { | |
330 | case DCRN_CPR0_CONFIG_ADDR: | |
331 | vcpu->arch.gpr[rt] = vcpu->arch.cpr0_cfgaddr; | |
332 | break; | |
333 | case DCRN_CPR0_CONFIG_DATA: | |
334 | local_irq_disable(); | |
335 | mtdcr(DCRN_CPR0_CONFIG_ADDR, | |
336 | vcpu->arch.cpr0_cfgaddr); | |
337 | vcpu->arch.gpr[rt] = mfdcr(DCRN_CPR0_CONFIG_DATA); | |
338 | local_irq_enable(); | |
339 | break; | |
340 | default: | |
341 | run->dcr.dcrn = dcrn; | |
342 | run->dcr.data = 0; | |
343 | run->dcr.is_write = 0; | |
344 | vcpu->arch.io_gpr = rt; | |
345 | vcpu->arch.dcr_needed = 1; | |
346 | emulated = EMULATE_DO_DCR; | |
347 | } | |
348 | ||
349 | break; | |
350 | ||
351 | case 339: /* mfspr */ | |
352 | sprn = get_sprn(inst); | |
353 | rt = get_rt(inst); | |
354 | ||
355 | switch (sprn) { | |
356 | case SPRN_SRR0: | |
357 | vcpu->arch.gpr[rt] = vcpu->arch.srr0; break; | |
358 | case SPRN_SRR1: | |
359 | vcpu->arch.gpr[rt] = vcpu->arch.srr1; break; | |
360 | case SPRN_MMUCR: | |
361 | vcpu->arch.gpr[rt] = vcpu->arch.mmucr; break; | |
362 | case SPRN_PID: | |
363 | vcpu->arch.gpr[rt] = vcpu->arch.pid; break; | |
364 | case SPRN_IVPR: | |
365 | vcpu->arch.gpr[rt] = vcpu->arch.ivpr; break; | |
366 | case SPRN_CCR0: | |
367 | vcpu->arch.gpr[rt] = vcpu->arch.ccr0; break; | |
368 | case SPRN_CCR1: | |
369 | vcpu->arch.gpr[rt] = vcpu->arch.ccr1; break; | |
370 | case SPRN_PVR: | |
371 | vcpu->arch.gpr[rt] = vcpu->arch.pvr; break; | |
372 | case SPRN_DEAR: | |
373 | vcpu->arch.gpr[rt] = vcpu->arch.dear; break; | |
374 | case SPRN_ESR: | |
375 | vcpu->arch.gpr[rt] = vcpu->arch.esr; break; | |
376 | case SPRN_DBCR0: | |
377 | vcpu->arch.gpr[rt] = vcpu->arch.dbcr0; break; | |
378 | case SPRN_DBCR1: | |
379 | vcpu->arch.gpr[rt] = vcpu->arch.dbcr1; break; | |
380 | ||
381 | /* Note: mftb and TBRL/TBWL are user-accessible, so | |
382 | * the guest can always access the real TB anyways. | |
383 | * In fact, we probably will never see these traps. */ | |
384 | case SPRN_TBWL: | |
385 | vcpu->arch.gpr[rt] = mftbl(); break; | |
386 | case SPRN_TBWU: | |
387 | vcpu->arch.gpr[rt] = mftbu(); break; | |
388 | ||
389 | case SPRN_SPRG0: | |
390 | vcpu->arch.gpr[rt] = vcpu->arch.sprg0; break; | |
391 | case SPRN_SPRG1: | |
392 | vcpu->arch.gpr[rt] = vcpu->arch.sprg1; break; | |
393 | case SPRN_SPRG2: | |
394 | vcpu->arch.gpr[rt] = vcpu->arch.sprg2; break; | |
395 | case SPRN_SPRG3: | |
396 | vcpu->arch.gpr[rt] = vcpu->arch.sprg3; break; | |
397 | /* Note: SPRG4-7 are user-readable, so we don't get | |
398 | * a trap. */ | |
399 | ||
400 | case SPRN_IVOR0: | |
401 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[0]; break; | |
402 | case SPRN_IVOR1: | |
403 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[1]; break; | |
404 | case SPRN_IVOR2: | |
405 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[2]; break; | |
406 | case SPRN_IVOR3: | |
407 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[3]; break; | |
408 | case SPRN_IVOR4: | |
409 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[4]; break; | |
410 | case SPRN_IVOR5: | |
411 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[5]; break; | |
412 | case SPRN_IVOR6: | |
413 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[6]; break; | |
414 | case SPRN_IVOR7: | |
415 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[7]; break; | |
416 | case SPRN_IVOR8: | |
417 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[8]; break; | |
418 | case SPRN_IVOR9: | |
419 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[9]; break; | |
420 | case SPRN_IVOR10: | |
421 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[10]; break; | |
422 | case SPRN_IVOR11: | |
423 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[11]; break; | |
424 | case SPRN_IVOR12: | |
425 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[12]; break; | |
426 | case SPRN_IVOR13: | |
427 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[13]; break; | |
428 | case SPRN_IVOR14: | |
429 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[14]; break; | |
430 | case SPRN_IVOR15: | |
431 | vcpu->arch.gpr[rt] = vcpu->arch.ivor[15]; break; | |
432 | ||
433 | default: | |
434 | printk("mfspr: unknown spr %x\n", sprn); | |
435 | vcpu->arch.gpr[rt] = 0; | |
436 | break; | |
437 | } | |
438 | break; | |
439 | ||
440 | case 407: /* sthx */ | |
441 | rs = get_rs(inst); | |
442 | ra = get_ra(inst); | |
443 | rb = get_rb(inst); | |
444 | ||
445 | emulated = kvmppc_handle_store(run, vcpu, | |
446 | vcpu->arch.gpr[rs], | |
447 | 2, 1); | |
448 | break; | |
449 | ||
450 | case 439: /* sthux */ | |
451 | rs = get_rs(inst); | |
452 | ra = get_ra(inst); | |
453 | rb = get_rb(inst); | |
454 | ||
455 | ea = vcpu->arch.gpr[rb]; | |
456 | if (ra) | |
457 | ea += vcpu->arch.gpr[ra]; | |
458 | ||
459 | emulated = kvmppc_handle_store(run, vcpu, | |
460 | vcpu->arch.gpr[rs], | |
461 | 2, 1); | |
462 | vcpu->arch.gpr[ra] = ea; | |
463 | break; | |
464 | ||
465 | case 451: /* mtdcr */ | |
466 | dcrn = get_dcrn(inst); | |
467 | rs = get_rs(inst); | |
468 | ||
469 | /* emulate some access in kernel */ | |
470 | switch (dcrn) { | |
471 | case DCRN_CPR0_CONFIG_ADDR: | |
472 | vcpu->arch.cpr0_cfgaddr = vcpu->arch.gpr[rs]; | |
473 | break; | |
474 | default: | |
475 | run->dcr.dcrn = dcrn; | |
476 | run->dcr.data = vcpu->arch.gpr[rs]; | |
477 | run->dcr.is_write = 1; | |
478 | vcpu->arch.dcr_needed = 1; | |
479 | emulated = EMULATE_DO_DCR; | |
480 | } | |
481 | ||
482 | break; | |
483 | ||
484 | case 467: /* mtspr */ | |
485 | sprn = get_sprn(inst); | |
486 | rs = get_rs(inst); | |
487 | switch (sprn) { | |
488 | case SPRN_SRR0: | |
489 | vcpu->arch.srr0 = vcpu->arch.gpr[rs]; break; | |
490 | case SPRN_SRR1: | |
491 | vcpu->arch.srr1 = vcpu->arch.gpr[rs]; break; | |
492 | case SPRN_MMUCR: | |
493 | vcpu->arch.mmucr = vcpu->arch.gpr[rs]; break; | |
494 | case SPRN_PID: | |
495 | vcpu->arch.pid = vcpu->arch.gpr[rs]; break; | |
496 | case SPRN_CCR0: | |
497 | vcpu->arch.ccr0 = vcpu->arch.gpr[rs]; break; | |
498 | case SPRN_CCR1: | |
499 | vcpu->arch.ccr1 = vcpu->arch.gpr[rs]; break; | |
500 | case SPRN_DEAR: | |
501 | vcpu->arch.dear = vcpu->arch.gpr[rs]; break; | |
502 | case SPRN_ESR: | |
503 | vcpu->arch.esr = vcpu->arch.gpr[rs]; break; | |
504 | case SPRN_DBCR0: | |
505 | vcpu->arch.dbcr0 = vcpu->arch.gpr[rs]; break; | |
506 | case SPRN_DBCR1: | |
507 | vcpu->arch.dbcr1 = vcpu->arch.gpr[rs]; break; | |
508 | ||
509 | /* XXX We need to context-switch the timebase for | |
510 | * watchdog and FIT. */ | |
511 | case SPRN_TBWL: break; | |
512 | case SPRN_TBWU: break; | |
513 | ||
514 | case SPRN_DEC: | |
515 | vcpu->arch.dec = vcpu->arch.gpr[rs]; | |
516 | kvmppc_emulate_dec(vcpu); | |
517 | break; | |
518 | ||
519 | case SPRN_TSR: | |
520 | vcpu->arch.tsr &= ~vcpu->arch.gpr[rs]; break; | |
521 | ||
522 | case SPRN_TCR: | |
523 | vcpu->arch.tcr = vcpu->arch.gpr[rs]; | |
524 | kvmppc_emulate_dec(vcpu); | |
525 | break; | |
526 | ||
527 | case SPRN_SPRG0: | |
528 | vcpu->arch.sprg0 = vcpu->arch.gpr[rs]; break; | |
529 | case SPRN_SPRG1: | |
530 | vcpu->arch.sprg1 = vcpu->arch.gpr[rs]; break; | |
531 | case SPRN_SPRG2: | |
532 | vcpu->arch.sprg2 = vcpu->arch.gpr[rs]; break; | |
533 | case SPRN_SPRG3: | |
534 | vcpu->arch.sprg3 = vcpu->arch.gpr[rs]; break; | |
535 | ||
536 | /* Note: SPRG4-7 are user-readable. These values are | |
537 | * loaded into the real SPRGs when resuming the | |
538 | * guest. */ | |
539 | case SPRN_SPRG4: | |
540 | vcpu->arch.sprg4 = vcpu->arch.gpr[rs]; break; | |
541 | case SPRN_SPRG5: | |
542 | vcpu->arch.sprg5 = vcpu->arch.gpr[rs]; break; | |
543 | case SPRN_SPRG6: | |
544 | vcpu->arch.sprg6 = vcpu->arch.gpr[rs]; break; | |
545 | case SPRN_SPRG7: | |
546 | vcpu->arch.sprg7 = vcpu->arch.gpr[rs]; break; | |
547 | ||
548 | case SPRN_IVPR: | |
549 | vcpu->arch.ivpr = vcpu->arch.gpr[rs]; break; | |
550 | case SPRN_IVOR0: | |
551 | vcpu->arch.ivor[0] = vcpu->arch.gpr[rs]; break; | |
552 | case SPRN_IVOR1: | |
553 | vcpu->arch.ivor[1] = vcpu->arch.gpr[rs]; break; | |
554 | case SPRN_IVOR2: | |
555 | vcpu->arch.ivor[2] = vcpu->arch.gpr[rs]; break; | |
556 | case SPRN_IVOR3: | |
557 | vcpu->arch.ivor[3] = vcpu->arch.gpr[rs]; break; | |
558 | case SPRN_IVOR4: | |
559 | vcpu->arch.ivor[4] = vcpu->arch.gpr[rs]; break; | |
560 | case SPRN_IVOR5: | |
561 | vcpu->arch.ivor[5] = vcpu->arch.gpr[rs]; break; | |
562 | case SPRN_IVOR6: | |
563 | vcpu->arch.ivor[6] = vcpu->arch.gpr[rs]; break; | |
564 | case SPRN_IVOR7: | |
565 | vcpu->arch.ivor[7] = vcpu->arch.gpr[rs]; break; | |
566 | case SPRN_IVOR8: | |
567 | vcpu->arch.ivor[8] = vcpu->arch.gpr[rs]; break; | |
568 | case SPRN_IVOR9: | |
569 | vcpu->arch.ivor[9] = vcpu->arch.gpr[rs]; break; | |
570 | case SPRN_IVOR10: | |
571 | vcpu->arch.ivor[10] = vcpu->arch.gpr[rs]; break; | |
572 | case SPRN_IVOR11: | |
573 | vcpu->arch.ivor[11] = vcpu->arch.gpr[rs]; break; | |
574 | case SPRN_IVOR12: | |
575 | vcpu->arch.ivor[12] = vcpu->arch.gpr[rs]; break; | |
576 | case SPRN_IVOR13: | |
577 | vcpu->arch.ivor[13] = vcpu->arch.gpr[rs]; break; | |
578 | case SPRN_IVOR14: | |
579 | vcpu->arch.ivor[14] = vcpu->arch.gpr[rs]; break; | |
580 | case SPRN_IVOR15: | |
581 | vcpu->arch.ivor[15] = vcpu->arch.gpr[rs]; break; | |
582 | ||
583 | default: | |
584 | printk("mtspr: unknown spr %x\n", sprn); | |
585 | emulated = EMULATE_FAIL; | |
586 | break; | |
587 | } | |
588 | break; | |
589 | ||
590 | case 470: /* dcbi */ | |
591 | /* Do nothing. The guest is performing dcbi because | |
592 | * hardware DMA is not snooped by the dcache, but | |
593 | * emulated DMA either goes through the dcache as | |
594 | * normal writes, or the host kernel has handled dcache | |
595 | * coherence. */ | |
596 | break; | |
597 | ||
598 | case 534: /* lwbrx */ | |
599 | rt = get_rt(inst); | |
600 | emulated = kvmppc_handle_load(run, vcpu, rt, 4, 0); | |
601 | break; | |
602 | ||
603 | case 566: /* tlbsync */ | |
604 | break; | |
605 | ||
606 | case 662: /* stwbrx */ | |
607 | rs = get_rs(inst); | |
608 | ra = get_ra(inst); | |
609 | rb = get_rb(inst); | |
610 | ||
611 | emulated = kvmppc_handle_store(run, vcpu, | |
612 | vcpu->arch.gpr[rs], | |
613 | 4, 0); | |
614 | break; | |
615 | ||
616 | case 978: /* tlbwe */ | |
617 | emulated = kvmppc_emul_tlbwe(vcpu, inst); | |
618 | break; | |
619 | ||
620 | case 914: { /* tlbsx */ | |
621 | int index; | |
622 | unsigned int as = get_mmucr_sts(vcpu); | |
623 | unsigned int pid = get_mmucr_stid(vcpu); | |
624 | ||
625 | rt = get_rt(inst); | |
626 | ra = get_ra(inst); | |
627 | rb = get_rb(inst); | |
628 | rc = get_rc(inst); | |
629 | ||
630 | ea = vcpu->arch.gpr[rb]; | |
631 | if (ra) | |
632 | ea += vcpu->arch.gpr[ra]; | |
633 | ||
634 | index = kvmppc_44x_tlb_index(vcpu, ea, pid, as); | |
635 | if (rc) { | |
636 | if (index < 0) | |
637 | vcpu->arch.cr &= ~0x20000000; | |
638 | else | |
639 | vcpu->arch.cr |= 0x20000000; | |
640 | } | |
641 | vcpu->arch.gpr[rt] = index; | |
642 | ||
643 | } | |
644 | break; | |
645 | ||
646 | case 790: /* lhbrx */ | |
647 | rt = get_rt(inst); | |
648 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 0); | |
649 | break; | |
650 | ||
651 | case 918: /* sthbrx */ | |
652 | rs = get_rs(inst); | |
653 | ra = get_ra(inst); | |
654 | rb = get_rb(inst); | |
655 | ||
656 | emulated = kvmppc_handle_store(run, vcpu, | |
657 | vcpu->arch.gpr[rs], | |
658 | 2, 0); | |
659 | break; | |
660 | ||
661 | case 966: /* iccci */ | |
662 | break; | |
663 | ||
664 | default: | |
665 | printk("unknown: op %d xop %d\n", get_op(inst), | |
666 | get_xop(inst)); | |
667 | emulated = EMULATE_FAIL; | |
668 | break; | |
669 | } | |
670 | break; | |
671 | ||
672 | case 32: /* lwz */ | |
673 | rt = get_rt(inst); | |
674 | emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1); | |
675 | break; | |
676 | ||
677 | case 33: /* lwzu */ | |
678 | ra = get_ra(inst); | |
679 | rt = get_rt(inst); | |
680 | emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1); | |
681 | vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed; | |
682 | break; | |
683 | ||
684 | case 34: /* lbz */ | |
685 | rt = get_rt(inst); | |
686 | emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); | |
687 | break; | |
688 | ||
689 | case 35: /* lbzu */ | |
690 | ra = get_ra(inst); | |
691 | rt = get_rt(inst); | |
692 | emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1); | |
693 | vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed; | |
694 | break; | |
695 | ||
696 | case 36: /* stw */ | |
697 | rs = get_rs(inst); | |
698 | emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs], | |
699 | 4, 1); | |
700 | break; | |
701 | ||
702 | case 37: /* stwu */ | |
703 | ra = get_ra(inst); | |
704 | rs = get_rs(inst); | |
705 | emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs], | |
706 | 4, 1); | |
707 | vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed; | |
708 | break; | |
709 | ||
710 | case 38: /* stb */ | |
711 | rs = get_rs(inst); | |
712 | emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs], | |
713 | 1, 1); | |
714 | break; | |
715 | ||
716 | case 39: /* stbu */ | |
717 | ra = get_ra(inst); | |
718 | rs = get_rs(inst); | |
719 | emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs], | |
720 | 1, 1); | |
721 | vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed; | |
722 | break; | |
723 | ||
724 | case 40: /* lhz */ | |
725 | rt = get_rt(inst); | |
726 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); | |
727 | break; | |
728 | ||
729 | case 41: /* lhzu */ | |
730 | ra = get_ra(inst); | |
731 | rt = get_rt(inst); | |
732 | emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1); | |
733 | vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed; | |
734 | break; | |
735 | ||
736 | case 44: /* sth */ | |
737 | rs = get_rs(inst); | |
738 | emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs], | |
739 | 2, 1); | |
740 | break; | |
741 | ||
742 | case 45: /* sthu */ | |
743 | ra = get_ra(inst); | |
744 | rs = get_rs(inst); | |
745 | emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs], | |
746 | 2, 1); | |
747 | vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed; | |
748 | break; | |
749 | ||
750 | default: | |
751 | printk("unknown op %d\n", get_op(inst)); | |
752 | emulated = EMULATE_FAIL; | |
753 | break; | |
754 | } | |
755 | ||
756 | if (advance) | |
757 | vcpu->arch.pc += 4; /* Advance past emulated instruction. */ | |
758 | ||
759 | return emulated; | |
760 | } |