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.
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.
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.
15 * Copyright SUSE Linux Products GmbH 2009
17 * Authors: Alexander Graf <agraf@suse.de>
20 #include <asm/kvm_ppc.h>
21 #include <asm/disassemble.h>
22 #include <asm/kvm_book3s.h>
25 #define OP_19_XOP_RFID 18
26 #define OP_19_XOP_RFI 50
28 #define OP_31_XOP_MFMSR 83
29 #define OP_31_XOP_MTMSR 146
30 #define OP_31_XOP_MTMSRD 178
31 #define OP_31_XOP_MTSR 210
32 #define OP_31_XOP_MTSRIN 242
33 #define OP_31_XOP_TLBIEL 274
34 #define OP_31_XOP_TLBIE 306
35 #define OP_31_XOP_SLBMTE 402
36 #define OP_31_XOP_SLBIE 434
37 #define OP_31_XOP_SLBIA 498
38 #define OP_31_XOP_MFSR 595
39 #define OP_31_XOP_MFSRIN 659
40 #define OP_31_XOP_DCBA 758
41 #define OP_31_XOP_SLBMFEV 851
42 #define OP_31_XOP_EIOIO 854
43 #define OP_31_XOP_SLBMFEE 915
45 /* DCBZ is actually 1014, but we patch it to 1010 so we get a trap */
46 #define OP_31_XOP_DCBZ 1010
62 /* Book3S_32 defines mfsrin(v) - but that messes up our abstract
63 * function pointers, so let's just disable the define. */
66 int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
67 unsigned int inst, int *advance)
69 int emulated = EMULATE_DONE;
71 switch (get_op(inst)) {
73 switch (get_xop(inst)) {
76 kvmppc_set_pc(vcpu, vcpu->arch.shared->srr0);
77 kvmppc_set_msr(vcpu, vcpu->arch.shared->srr1);
82 emulated = EMULATE_FAIL;
87 switch (get_xop(inst)) {
89 kvmppc_set_gpr(vcpu, get_rt(inst),
90 vcpu->arch.shared->msr);
92 case OP_31_XOP_MTMSRD:
94 ulong rs = kvmppc_get_gpr(vcpu, get_rs(inst));
96 vcpu->arch.shared->msr &= ~(MSR_RI | MSR_EE);
97 vcpu->arch.shared->msr |= rs & (MSR_RI | MSR_EE);
99 kvmppc_set_msr(vcpu, rs);
102 case OP_31_XOP_MTMSR:
103 kvmppc_set_msr(vcpu, kvmppc_get_gpr(vcpu, get_rs(inst)));
109 srnum = kvmppc_get_field(inst, 12 + 32, 15 + 32);
110 if (vcpu->arch.mmu.mfsrin) {
112 sr = vcpu->arch.mmu.mfsrin(vcpu, srnum);
113 kvmppc_set_gpr(vcpu, get_rt(inst), sr);
117 case OP_31_XOP_MFSRIN:
121 srnum = (kvmppc_get_gpr(vcpu, get_rb(inst)) >> 28) & 0xf;
122 if (vcpu->arch.mmu.mfsrin) {
124 sr = vcpu->arch.mmu.mfsrin(vcpu, srnum);
125 kvmppc_set_gpr(vcpu, get_rt(inst), sr);
130 vcpu->arch.mmu.mtsrin(vcpu,
132 kvmppc_get_gpr(vcpu, get_rs(inst)));
134 case OP_31_XOP_MTSRIN:
135 vcpu->arch.mmu.mtsrin(vcpu,
136 (kvmppc_get_gpr(vcpu, get_rb(inst)) >> 28) & 0xf,
137 kvmppc_get_gpr(vcpu, get_rs(inst)));
139 case OP_31_XOP_TLBIE:
140 case OP_31_XOP_TLBIEL:
142 bool large = (inst & 0x00200000) ? true : false;
143 ulong addr = kvmppc_get_gpr(vcpu, get_rb(inst));
144 vcpu->arch.mmu.tlbie(vcpu, addr, large);
147 case OP_31_XOP_EIOIO:
149 case OP_31_XOP_SLBMTE:
150 if (!vcpu->arch.mmu.slbmte)
153 vcpu->arch.mmu.slbmte(vcpu,
154 kvmppc_get_gpr(vcpu, get_rs(inst)),
155 kvmppc_get_gpr(vcpu, get_rb(inst)));
157 case OP_31_XOP_SLBIE:
158 if (!vcpu->arch.mmu.slbie)
161 vcpu->arch.mmu.slbie(vcpu,
162 kvmppc_get_gpr(vcpu, get_rb(inst)));
164 case OP_31_XOP_SLBIA:
165 if (!vcpu->arch.mmu.slbia)
168 vcpu->arch.mmu.slbia(vcpu);
170 case OP_31_XOP_SLBMFEE:
171 if (!vcpu->arch.mmu.slbmfee) {
172 emulated = EMULATE_FAIL;
176 rb = kvmppc_get_gpr(vcpu, get_rb(inst));
177 t = vcpu->arch.mmu.slbmfee(vcpu, rb);
178 kvmppc_set_gpr(vcpu, get_rt(inst), t);
181 case OP_31_XOP_SLBMFEV:
182 if (!vcpu->arch.mmu.slbmfev) {
183 emulated = EMULATE_FAIL;
187 rb = kvmppc_get_gpr(vcpu, get_rb(inst));
188 t = vcpu->arch.mmu.slbmfev(vcpu, rb);
189 kvmppc_set_gpr(vcpu, get_rt(inst), t);
193 /* Gets treated as NOP */
197 ulong rb = kvmppc_get_gpr(vcpu, get_rb(inst));
200 u32 zeros[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
205 ra = kvmppc_get_gpr(vcpu, get_ra(inst));
207 addr = (ra + rb) & ~31ULL;
208 if (!(vcpu->arch.shared->msr & MSR_SF))
212 r = kvmppc_st(vcpu, &addr, 32, zeros, true);
213 if ((r == -ENOENT) || (r == -EPERM)) {
215 vcpu->arch.shared->dar = vaddr;
216 to_svcpu(vcpu)->fault_dar = vaddr;
218 dsisr = DSISR_ISSTORE;
220 dsisr |= DSISR_NOHPTE;
221 else if (r == -EPERM)
222 dsisr |= DSISR_PROTFAULT;
224 vcpu->arch.shared->dsisr = dsisr;
225 to_svcpu(vcpu)->fault_dsisr = dsisr;
227 kvmppc_book3s_queue_irqprio(vcpu,
228 BOOK3S_INTERRUPT_DATA_STORAGE);
234 emulated = EMULATE_FAIL;
238 emulated = EMULATE_FAIL;
241 if (emulated == EMULATE_FAIL)
242 emulated = kvmppc_emulate_paired_single(run, vcpu);
247 void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat, bool upper,
252 u32 bl = (val >> 2) & 0x7ff;
253 bat->bepi_mask = (~bl << 17);
254 bat->bepi = val & 0xfffe0000;
255 bat->vs = (val & 2) ? 1 : 0;
256 bat->vp = (val & 1) ? 1 : 0;
257 bat->raw = (bat->raw & 0xffffffff00000000ULL) | val;
260 bat->brpn = val & 0xfffe0000;
261 bat->wimg = (val >> 3) & 0xf;
263 bat->raw = (bat->raw & 0x00000000ffffffffULL) | ((u64)val << 32);
267 static struct kvmppc_bat *kvmppc_find_bat(struct kvm_vcpu *vcpu, int sprn)
269 struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
270 struct kvmppc_bat *bat;
273 case SPRN_IBAT0U ... SPRN_IBAT3L:
274 bat = &vcpu_book3s->ibat[(sprn - SPRN_IBAT0U) / 2];
276 case SPRN_IBAT4U ... SPRN_IBAT7L:
277 bat = &vcpu_book3s->ibat[4 + ((sprn - SPRN_IBAT4U) / 2)];
279 case SPRN_DBAT0U ... SPRN_DBAT3L:
280 bat = &vcpu_book3s->dbat[(sprn - SPRN_DBAT0U) / 2];
282 case SPRN_DBAT4U ... SPRN_DBAT7L:
283 bat = &vcpu_book3s->dbat[4 + ((sprn - SPRN_DBAT4U) / 2)];
292 int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
294 int emulated = EMULATE_DONE;
295 ulong spr_val = kvmppc_get_gpr(vcpu, rs);
299 to_book3s(vcpu)->sdr1 = spr_val;
302 vcpu->arch.shared->dsisr = spr_val;
305 vcpu->arch.shared->dar = spr_val;
308 to_book3s(vcpu)->hior = spr_val;
310 case SPRN_IBAT0U ... SPRN_IBAT3L:
311 case SPRN_IBAT4U ... SPRN_IBAT7L:
312 case SPRN_DBAT0U ... SPRN_DBAT3L:
313 case SPRN_DBAT4U ... SPRN_DBAT7L:
315 struct kvmppc_bat *bat = kvmppc_find_bat(vcpu, sprn);
317 kvmppc_set_bat(vcpu, bat, !(sprn % 2), (u32)spr_val);
318 /* BAT writes happen so rarely that we're ok to flush
320 kvmppc_mmu_pte_flush(vcpu, 0, 0);
321 kvmppc_mmu_flush_segments(vcpu);
325 to_book3s(vcpu)->hid[0] = spr_val;
328 to_book3s(vcpu)->hid[1] = spr_val;
331 to_book3s(vcpu)->hid[2] = spr_val;
333 case SPRN_HID2_GEKKO:
334 to_book3s(vcpu)->hid[2] = spr_val;
335 /* HID2.PSE controls paired single on gekko */
336 switch (vcpu->arch.pvr) {
337 case 0x00080200: /* lonestar 2.0 */
338 case 0x00088202: /* lonestar 2.2 */
339 case 0x70000100: /* gekko 1.0 */
340 case 0x00080100: /* gekko 2.0 */
341 case 0x00083203: /* gekko 2.3a */
342 case 0x00083213: /* gekko 2.3b */
343 case 0x00083204: /* gekko 2.4 */
344 case 0x00083214: /* gekko 2.4e (8SE) - retail HW2 */
345 case 0x00087200: /* broadway */
346 if (vcpu->arch.hflags & BOOK3S_HFLAG_NATIVE_PS) {
347 /* Native paired singles */
348 } else if (spr_val & (1 << 29)) { /* HID2.PSE */
349 vcpu->arch.hflags |= BOOK3S_HFLAG_PAIRED_SINGLE;
350 kvmppc_giveup_ext(vcpu, MSR_FP);
352 vcpu->arch.hflags &= ~BOOK3S_HFLAG_PAIRED_SINGLE;
358 case SPRN_HID4_GEKKO:
359 to_book3s(vcpu)->hid[4] = spr_val;
362 to_book3s(vcpu)->hid[5] = spr_val;
363 /* guest HID5 set can change is_dcbz32 */
364 if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
366 vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32;
376 to_book3s(vcpu)->gqr[sprn - SPRN_GQR0] = spr_val;
385 case SPRN_MMCR0_GEKKO:
386 case SPRN_MMCR1_GEKKO:
387 case SPRN_PMC1_GEKKO:
388 case SPRN_PMC2_GEKKO:
389 case SPRN_PMC3_GEKKO:
390 case SPRN_PMC4_GEKKO:
391 case SPRN_WPAR_GEKKO:
394 printk(KERN_INFO "KVM: invalid SPR write: %d\n", sprn);
396 emulated = EMULATE_FAIL;
404 int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
406 int emulated = EMULATE_DONE;
409 case SPRN_IBAT0U ... SPRN_IBAT3L:
410 case SPRN_IBAT4U ... SPRN_IBAT7L:
411 case SPRN_DBAT0U ... SPRN_DBAT3L:
412 case SPRN_DBAT4U ... SPRN_DBAT7L:
414 struct kvmppc_bat *bat = kvmppc_find_bat(vcpu, sprn);
417 kvmppc_set_gpr(vcpu, rt, bat->raw >> 32);
419 kvmppc_set_gpr(vcpu, rt, bat->raw);
424 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->sdr1);
427 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->dsisr);
430 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->dar);
433 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hior);
436 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hid[0]);
439 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hid[1]);
442 case SPRN_HID2_GEKKO:
443 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hid[2]);
446 case SPRN_HID4_GEKKO:
447 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hid[4]);
450 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hid[5]);
460 kvmppc_set_gpr(vcpu, rt,
461 to_book3s(vcpu)->gqr[sprn - SPRN_GQR0]);
469 case SPRN_MMCR0_GEKKO:
470 case SPRN_MMCR1_GEKKO:
471 case SPRN_PMC1_GEKKO:
472 case SPRN_PMC2_GEKKO:
473 case SPRN_PMC3_GEKKO:
474 case SPRN_PMC4_GEKKO:
475 case SPRN_WPAR_GEKKO:
476 kvmppc_set_gpr(vcpu, rt, 0);
479 printk(KERN_INFO "KVM: invalid SPR read: %d\n", sprn);
481 emulated = EMULATE_FAIL;
489 u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst)
494 * This is what the spec says about DSISR bits (not mentioned = 0):
496 * 12:13 [DS] Set to bits 30:31
497 * 15:16 [X] Set to bits 29:30
498 * 17 [X] Set to bit 25
499 * [D/DS] Set to bit 5
500 * 18:21 [X] Set to bits 21:24
501 * [D/DS] Set to bits 1:4
502 * 22:26 Set to bits 6:10 (RT/RS/FRT/FRS)
503 * 27:31 Set to bits 11:15 (RA)
506 switch (get_op(inst)) {
512 dsisr |= (inst >> 12) & 0x4000; /* bit 17 */
513 dsisr |= (inst >> 17) & 0x3c00; /* bits 18:21 */
517 dsisr |= (inst << 14) & 0x18000; /* bits 15:16 */
518 dsisr |= (inst << 8) & 0x04000; /* bit 17 */
519 dsisr |= (inst << 3) & 0x03c00; /* bits 18:21 */
522 printk(KERN_INFO "KVM: Unaligned instruction 0x%x\n", inst);
526 dsisr |= (inst >> 16) & 0x03ff; /* bits 22:31 */
531 ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst)
536 switch (get_op(inst)) {
543 dar = kvmppc_get_gpr(vcpu, ra);
544 dar += (s32)((s16)inst);
549 dar = kvmppc_get_gpr(vcpu, ra);
550 dar += kvmppc_get_gpr(vcpu, get_rb(inst));
553 printk(KERN_INFO "KVM: Unaligned instruction 0x%x\n", inst);