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15#include <linux/kvm_host.h>
16#include <linux/slab.h>
17#include <linux/err.h>
18#include <linux/export.h>
19
20#include <asm/reg.h>
21#include <asm/cputable.h>
22#include <asm/tlbflush.h>
23#include <asm/kvm_ppc.h>
24#include <asm/dbell.h>
25
26#include "booke.h"
27#include "e500.h"
28
29void kvmppc_set_pending_interrupt(struct kvm_vcpu *vcpu, enum int_class type)
30{
31 enum ppc_dbell dbell_type;
32 unsigned long tag;
33
34 switch (type) {
35 case INT_CLASS_NONCRIT:
36 dbell_type = PPC_G_DBELL;
37 break;
38 case INT_CLASS_CRIT:
39 dbell_type = PPC_G_DBELL_CRIT;
40 break;
41 case INT_CLASS_MC:
42 dbell_type = PPC_G_DBELL_MC;
43 break;
44 default:
45 WARN_ONCE(1, "%s: unknown int type %d\n", __func__, type);
46 return;
47 }
48
49
50 tag = PPC_DBELL_LPID(vcpu->kvm->arch.lpid) | vcpu->vcpu_id;
51 mb();
52 ppc_msgsnd(dbell_type, 0, tag);
53}
54
55
56void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500,
57 struct kvm_book3e_206_tlb_entry *gtlbe)
58{
59 unsigned int tid, ts;
60 gva_t eaddr;
61 u32 val, lpid;
62 unsigned long flags;
63
64 ts = get_tlb_ts(gtlbe);
65 tid = get_tlb_tid(gtlbe);
66 lpid = vcpu_e500->vcpu.kvm->arch.lpid;
67
68
69 val = (tid << 16) | ts;
70 eaddr = get_tlb_eaddr(gtlbe);
71
72 local_irq_save(flags);
73
74 mtspr(SPRN_MAS6, val);
75 mtspr(SPRN_MAS5, MAS5_SGS | lpid);
76
77 asm volatile("tlbsx 0, %[eaddr]\n" : : [eaddr] "r" (eaddr));
78 val = mfspr(SPRN_MAS1);
79 if (val & MAS1_VALID) {
80 mtspr(SPRN_MAS1, val & ~MAS1_VALID);
81 asm volatile("tlbwe");
82 }
83 mtspr(SPRN_MAS5, 0);
84
85 mtspr(SPRN_MAS8, 0);
86 isync();
87
88 local_irq_restore(flags);
89}
90
91void kvmppc_e500_tlbil_all(struct kvmppc_vcpu_e500 *vcpu_e500)
92{
93 unsigned long flags;
94
95 local_irq_save(flags);
96 mtspr(SPRN_MAS5, MAS5_SGS | vcpu_e500->vcpu.kvm->arch.lpid);
97 asm volatile("tlbilxlpid");
98 mtspr(SPRN_MAS5, 0);
99 local_irq_restore(flags);
100}
101
102void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid)
103{
104 vcpu->arch.pid = pid;
105}
106
107void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr)
108{
109}
110
111static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu_on_cpu);
112
113void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
114{
115 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
116
117 kvmppc_booke_vcpu_load(vcpu, cpu);
118
119 mtspr(SPRN_LPID, vcpu->kvm->arch.lpid);
120 mtspr(SPRN_EPCR, vcpu->arch.shadow_epcr);
121 mtspr(SPRN_GPIR, vcpu->vcpu_id);
122 mtspr(SPRN_MSRP, vcpu->arch.shadow_msrp);
123 mtspr(SPRN_EPLC, vcpu->arch.eplc);
124 mtspr(SPRN_EPSC, vcpu->arch.epsc);
125
126 mtspr(SPRN_GIVPR, vcpu->arch.ivpr);
127 mtspr(SPRN_GIVOR2, vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE]);
128 mtspr(SPRN_GIVOR8, vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL]);
129 mtspr(SPRN_GSPRG0, (unsigned long)vcpu->arch.shared->sprg0);
130 mtspr(SPRN_GSPRG1, (unsigned long)vcpu->arch.shared->sprg1);
131 mtspr(SPRN_GSPRG2, (unsigned long)vcpu->arch.shared->sprg2);
132 mtspr(SPRN_GSPRG3, (unsigned long)vcpu->arch.shared->sprg3);
133
134 mtspr(SPRN_GSRR0, vcpu->arch.shared->srr0);
135 mtspr(SPRN_GSRR1, vcpu->arch.shared->srr1);
136
137 mtspr(SPRN_GEPR, vcpu->arch.epr);
138 mtspr(SPRN_GDEAR, vcpu->arch.shared->dar);
139 mtspr(SPRN_GESR, vcpu->arch.shared->esr);
140
141 if (vcpu->arch.oldpir != mfspr(SPRN_PIR) ||
142 __get_cpu_var(last_vcpu_on_cpu) != vcpu) {
143 kvmppc_e500_tlbil_all(vcpu_e500);
144 __get_cpu_var(last_vcpu_on_cpu) = vcpu;
145 }
146
147 kvmppc_load_guest_fp(vcpu);
148}
149
150void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
151{
152 vcpu->arch.eplc = mfspr(SPRN_EPLC);
153 vcpu->arch.epsc = mfspr(SPRN_EPSC);
154
155 vcpu->arch.shared->sprg0 = mfspr(SPRN_GSPRG0);
156 vcpu->arch.shared->sprg1 = mfspr(SPRN_GSPRG1);
157 vcpu->arch.shared->sprg2 = mfspr(SPRN_GSPRG2);
158 vcpu->arch.shared->sprg3 = mfspr(SPRN_GSPRG3);
159
160 vcpu->arch.shared->srr0 = mfspr(SPRN_GSRR0);
161 vcpu->arch.shared->srr1 = mfspr(SPRN_GSRR1);
162
163 vcpu->arch.epr = mfspr(SPRN_GEPR);
164 vcpu->arch.shared->dar = mfspr(SPRN_GDEAR);
165 vcpu->arch.shared->esr = mfspr(SPRN_GESR);
166
167 vcpu->arch.oldpir = mfspr(SPRN_PIR);
168
169 kvmppc_booke_vcpu_put(vcpu);
170}
171
172int kvmppc_core_check_processor_compat(void)
173{
174 int r;
175
176 if (strcmp(cur_cpu_spec->cpu_name, "e500mc") == 0)
177 r = 0;
178 else if (strcmp(cur_cpu_spec->cpu_name, "e5500") == 0)
179 r = 0;
180 else
181 r = -ENOTSUPP;
182
183 return r;
184}
185
186int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu)
187{
188 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
189
190 vcpu->arch.shadow_epcr = SPRN_EPCR_DSIGS | SPRN_EPCR_DGTMI | \
191 SPRN_EPCR_DUVD;
192#ifdef CONFIG_64BIT
193 vcpu->arch.shadow_epcr |= SPRN_EPCR_ICM;
194#endif
195 vcpu->arch.shadow_msrp = MSRP_UCLEP | MSRP_DEP | MSRP_PMMP;
196 vcpu->arch.eplc = EPC_EGS | (vcpu->kvm->arch.lpid << EPC_ELPID_SHIFT);
197 vcpu->arch.epsc = vcpu->arch.eplc;
198
199 vcpu->arch.pvr = mfspr(SPRN_PVR);
200 vcpu_e500->svr = mfspr(SPRN_SVR);
201
202 vcpu->arch.cpu_type = KVM_CPU_E500MC;
203
204 return 0;
205}
206
207void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
208{
209 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
210
211 sregs->u.e.features |= KVM_SREGS_E_ARCH206_MMU | KVM_SREGS_E_PM |
212 KVM_SREGS_E_PC;
213 sregs->u.e.impl_id = KVM_SREGS_E_IMPL_FSL;
214
215 sregs->u.e.impl.fsl.features = 0;
216 sregs->u.e.impl.fsl.svr = vcpu_e500->svr;
217 sregs->u.e.impl.fsl.hid0 = vcpu_e500->hid0;
218 sregs->u.e.impl.fsl.mcar = vcpu_e500->mcar;
219
220 kvmppc_get_sregs_e500_tlb(vcpu, sregs);
221
222 sregs->u.e.ivor_high[3] =
223 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR];
224 sregs->u.e.ivor_high[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL];
225 sregs->u.e.ivor_high[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT];
226
227 kvmppc_get_sregs_ivor(vcpu, sregs);
228}
229
230int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
231{
232 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
233 int ret;
234
235 if (sregs->u.e.impl_id == KVM_SREGS_E_IMPL_FSL) {
236 vcpu_e500->svr = sregs->u.e.impl.fsl.svr;
237 vcpu_e500->hid0 = sregs->u.e.impl.fsl.hid0;
238 vcpu_e500->mcar = sregs->u.e.impl.fsl.mcar;
239 }
240
241 ret = kvmppc_set_sregs_e500_tlb(vcpu, sregs);
242 if (ret < 0)
243 return ret;
244
245 if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
246 return 0;
247
248 if (sregs->u.e.features & KVM_SREGS_E_PM) {
249 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] =
250 sregs->u.e.ivor_high[3];
251 }
252
253 if (sregs->u.e.features & KVM_SREGS_E_PC) {
254 vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL] =
255 sregs->u.e.ivor_high[4];
256 vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT] =
257 sregs->u.e.ivor_high[5];
258 }
259
260 return kvmppc_set_sregs_ivor(vcpu, sregs);
261}
262
263int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
264 union kvmppc_one_reg *val)
265{
266 int r = kvmppc_get_one_reg_e500_tlb(vcpu, id, val);
267 return r;
268}
269
270int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
271 union kvmppc_one_reg *val)
272{
273 int r = kvmppc_set_one_reg_e500_tlb(vcpu, id, val);
274 return r;
275}
276
277struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
278{
279 struct kvmppc_vcpu_e500 *vcpu_e500;
280 struct kvm_vcpu *vcpu;
281 int err;
282
283 vcpu_e500 = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
284 if (!vcpu_e500) {
285 err = -ENOMEM;
286 goto out;
287 }
288 vcpu = &vcpu_e500->vcpu;
289
290
291 vcpu->arch.oldpir = 0xffffffff;
292
293 err = kvm_vcpu_init(vcpu, kvm, id);
294 if (err)
295 goto free_vcpu;
296
297 err = kvmppc_e500_tlb_init(vcpu_e500);
298 if (err)
299 goto uninit_vcpu;
300
301 vcpu->arch.shared = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
302 if (!vcpu->arch.shared)
303 goto uninit_tlb;
304
305 return vcpu;
306
307uninit_tlb:
308 kvmppc_e500_tlb_uninit(vcpu_e500);
309uninit_vcpu:
310 kvm_vcpu_uninit(vcpu);
311
312free_vcpu:
313 kmem_cache_free(kvm_vcpu_cache, vcpu_e500);
314out:
315 return ERR_PTR(err);
316}
317
318void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
319{
320 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
321
322 free_page((unsigned long)vcpu->arch.shared);
323 kvmppc_e500_tlb_uninit(vcpu_e500);
324 kvm_vcpu_uninit(vcpu);
325 kmem_cache_free(kvm_vcpu_cache, vcpu_e500);
326}
327
328int kvmppc_core_init_vm(struct kvm *kvm)
329{
330 int lpid;
331
332 lpid = kvmppc_alloc_lpid();
333 if (lpid < 0)
334 return lpid;
335
336 kvm->arch.lpid = lpid;
337 return 0;
338}
339
340void kvmppc_core_destroy_vm(struct kvm *kvm)
341{
342 kvmppc_free_lpid(kvm->arch.lpid);
343}
344
345static int __init kvmppc_e500mc_init(void)
346{
347 int r;
348
349 r = kvmppc_booke_init();
350 if (r)
351 return r;
352
353 kvmppc_init_lpid(64);
354 kvmppc_claim_lpid(0);
355
356 return kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE);
357}
358
359static void __exit kvmppc_e500mc_exit(void)
360{
361 kvmppc_booke_exit();
362}
363
364module_init(kvmppc_e500mc_init);
365module_exit(kvmppc_e500mc_exit);
366
