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_MTSRIN 242
32 #define OP_31_XOP_TLBIEL 274
33 #define OP_31_XOP_TLBIE 306
34 #define OP_31_XOP_SLBMTE 402
35 #define OP_31_XOP_SLBIE 434
36 #define OP_31_XOP_SLBIA 498
37 #define OP_31_XOP_MFSRIN 659
38 #define OP_31_XOP_SLBMFEV 851
39 #define OP_31_XOP_EIOIO 854
40 #define OP_31_XOP_SLBMFEE 915
42 /* DCBZ is actually 1014, but we patch it to 1010 so we get a trap */
43 #define OP_31_XOP_DCBZ 1010
45 int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
46 unsigned int inst, int *advance)
48 int emulated = EMULATE_DONE;
50 switch (get_op(inst)) {
52 switch (get_xop(inst)) {
55 vcpu->arch.pc = vcpu->arch.srr0;
56 kvmppc_set_msr(vcpu, vcpu->arch.srr1);
61 emulated = EMULATE_FAIL;
66 switch (get_xop(inst)) {
68 kvmppc_set_gpr(vcpu, get_rt(inst), vcpu->arch.msr);
70 case OP_31_XOP_MTMSRD:
72 ulong rs = kvmppc_get_gpr(vcpu, get_rs(inst));
74 vcpu->arch.msr &= ~(MSR_RI | MSR_EE);
75 vcpu->arch.msr |= rs & (MSR_RI | MSR_EE);
77 kvmppc_set_msr(vcpu, rs);
81 kvmppc_set_msr(vcpu, kvmppc_get_gpr(vcpu, get_rs(inst)));
83 case OP_31_XOP_MFSRIN:
87 srnum = (kvmppc_get_gpr(vcpu, get_rb(inst)) >> 28) & 0xf;
88 if (vcpu->arch.mmu.mfsrin) {
90 sr = vcpu->arch.mmu.mfsrin(vcpu, srnum);
91 kvmppc_set_gpr(vcpu, get_rt(inst), sr);
95 case OP_31_XOP_MTSRIN:
96 vcpu->arch.mmu.mtsrin(vcpu,
97 (kvmppc_get_gpr(vcpu, get_rb(inst)) >> 28) & 0xf,
98 kvmppc_get_gpr(vcpu, get_rs(inst)));
100 case OP_31_XOP_TLBIE:
101 case OP_31_XOP_TLBIEL:
103 bool large = (inst & 0x00200000) ? true : false;
104 ulong addr = kvmppc_get_gpr(vcpu, get_rb(inst));
105 vcpu->arch.mmu.tlbie(vcpu, addr, large);
108 case OP_31_XOP_EIOIO:
110 case OP_31_XOP_SLBMTE:
111 if (!vcpu->arch.mmu.slbmte)
114 vcpu->arch.mmu.slbmte(vcpu,
115 kvmppc_get_gpr(vcpu, get_rs(inst)),
116 kvmppc_get_gpr(vcpu, get_rb(inst)));
118 case OP_31_XOP_SLBIE:
119 if (!vcpu->arch.mmu.slbie)
122 vcpu->arch.mmu.slbie(vcpu,
123 kvmppc_get_gpr(vcpu, get_rb(inst)));
125 case OP_31_XOP_SLBIA:
126 if (!vcpu->arch.mmu.slbia)
129 vcpu->arch.mmu.slbia(vcpu);
131 case OP_31_XOP_SLBMFEE:
132 if (!vcpu->arch.mmu.slbmfee) {
133 emulated = EMULATE_FAIL;
137 rb = kvmppc_get_gpr(vcpu, get_rb(inst));
138 t = vcpu->arch.mmu.slbmfee(vcpu, rb);
139 kvmppc_set_gpr(vcpu, get_rt(inst), t);
142 case OP_31_XOP_SLBMFEV:
143 if (!vcpu->arch.mmu.slbmfev) {
144 emulated = EMULATE_FAIL;
148 rb = kvmppc_get_gpr(vcpu, get_rb(inst));
149 t = vcpu->arch.mmu.slbmfev(vcpu, rb);
150 kvmppc_set_gpr(vcpu, get_rt(inst), t);
155 ulong rb = kvmppc_get_gpr(vcpu, get_rb(inst));
158 u32 zeros[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
161 ra = kvmppc_get_gpr(vcpu, get_ra(inst));
163 addr = (ra + rb) & ~31ULL;
164 if (!(vcpu->arch.msr & MSR_SF))
167 if (kvmppc_st(vcpu, addr, 32, zeros)) {
168 vcpu->arch.dear = addr;
169 vcpu->arch.fault_dear = addr;
170 to_book3s(vcpu)->dsisr = DSISR_PROTFAULT |
172 kvmppc_book3s_queue_irqprio(vcpu,
173 BOOK3S_INTERRUPT_DATA_STORAGE);
174 kvmppc_mmu_pte_flush(vcpu, addr, ~0xFFFULL);
180 emulated = EMULATE_FAIL;
184 emulated = EMULATE_FAIL;
190 void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat, bool upper,
195 u32 bl = (val >> 2) & 0x7ff;
196 bat->bepi_mask = (~bl << 17);
197 bat->bepi = val & 0xfffe0000;
198 bat->vs = (val & 2) ? 1 : 0;
199 bat->vp = (val & 1) ? 1 : 0;
200 bat->raw = (bat->raw & 0xffffffff00000000ULL) | val;
203 bat->brpn = val & 0xfffe0000;
204 bat->wimg = (val >> 3) & 0xf;
206 bat->raw = (bat->raw & 0x00000000ffffffffULL) | ((u64)val << 32);
210 static void kvmppc_write_bat(struct kvm_vcpu *vcpu, int sprn, u32 val)
212 struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
213 struct kvmppc_bat *bat;
216 case SPRN_IBAT0U ... SPRN_IBAT3L:
217 bat = &vcpu_book3s->ibat[(sprn - SPRN_IBAT0U) / 2];
219 case SPRN_IBAT4U ... SPRN_IBAT7L:
220 bat = &vcpu_book3s->ibat[(sprn - SPRN_IBAT4U) / 2];
222 case SPRN_DBAT0U ... SPRN_DBAT3L:
223 bat = &vcpu_book3s->dbat[(sprn - SPRN_DBAT0U) / 2];
225 case SPRN_DBAT4U ... SPRN_DBAT7L:
226 bat = &vcpu_book3s->dbat[(sprn - SPRN_DBAT4U) / 2];
232 kvmppc_set_bat(vcpu, bat, !(sprn % 2), val);
235 int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
237 int emulated = EMULATE_DONE;
238 ulong spr_val = kvmppc_get_gpr(vcpu, rs);
242 to_book3s(vcpu)->sdr1 = spr_val;
245 to_book3s(vcpu)->dsisr = spr_val;
248 vcpu->arch.dear = spr_val;
251 to_book3s(vcpu)->hior = spr_val;
253 case SPRN_IBAT0U ... SPRN_IBAT3L:
254 case SPRN_IBAT4U ... SPRN_IBAT7L:
255 case SPRN_DBAT0U ... SPRN_DBAT3L:
256 case SPRN_DBAT4U ... SPRN_DBAT7L:
257 kvmppc_write_bat(vcpu, sprn, (u32)spr_val);
258 /* BAT writes happen so rarely that we're ok to flush
260 kvmppc_mmu_pte_flush(vcpu, 0, 0);
263 to_book3s(vcpu)->hid[0] = spr_val;
266 to_book3s(vcpu)->hid[1] = spr_val;
269 to_book3s(vcpu)->hid[2] = spr_val;
272 to_book3s(vcpu)->hid[4] = spr_val;
275 to_book3s(vcpu)->hid[5] = spr_val;
276 /* guest HID5 set can change is_dcbz32 */
277 if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
279 vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32;
289 printk(KERN_INFO "KVM: invalid SPR write: %d\n", sprn);
291 emulated = EMULATE_FAIL;
299 int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
301 int emulated = EMULATE_DONE;
305 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->sdr1);
308 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->dsisr);
311 kvmppc_set_gpr(vcpu, rt, vcpu->arch.dear);
314 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hior);
317 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hid[0]);
320 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hid[1]);
323 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hid[2]);
326 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hid[4]);
329 kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hid[5]);
336 kvmppc_set_gpr(vcpu, rt, 0);
339 printk(KERN_INFO "KVM: invalid SPR read: %d\n", sprn);
341 emulated = EMULATE_FAIL;