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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#include <linux/miscdevice.h>
20#include <linux/module.h>
21
22#include <asm/reg.h>
23#include <asm/cputable.h>
24#include <asm/tlbflush.h>
25#include <asm/kvm_ppc.h>
26#include <asm/dbell.h>
27
28#include "booke.h"
29#include "e500.h"
30
31void kvmppc_set_pending_interrupt(struct kvm_vcpu *vcpu, enum int_class type)
32{
33 enum ppc_dbell dbell_type;
34 unsigned long tag;
35
36 switch (type) {
37 case INT_CLASS_NONCRIT:
38 dbell_type = PPC_G_DBELL;
39 break;
40 case INT_CLASS_CRIT:
41 dbell_type = PPC_G_DBELL_CRIT;
42 break;
43 case INT_CLASS_MC:
44 dbell_type = PPC_G_DBELL_MC;
45 break;
46 default:
47 WARN_ONCE(1, "%s: unknown int type %d\n", __func__, type);
48 return;
49 }
50
51 preempt_disable();
52 tag = PPC_DBELL_LPID(get_lpid(vcpu)) | vcpu->vcpu_id;
53 mb();
54 ppc_msgsnd(dbell_type, 0, tag);
55 preempt_enable();
56}
57
58
59void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500,
60 struct kvm_book3e_206_tlb_entry *gtlbe)
61{
62 unsigned int tid, ts;
63 gva_t eaddr;
64 u32 val;
65 unsigned long flags;
66
67 ts = get_tlb_ts(gtlbe);
68 tid = get_tlb_tid(gtlbe);
69
70
71 val = (tid << 16) | ts;
72 eaddr = get_tlb_eaddr(gtlbe);
73
74 local_irq_save(flags);
75
76 mtspr(SPRN_MAS6, val);
77 mtspr(SPRN_MAS5, MAS5_SGS | get_lpid(&vcpu_e500->vcpu));
78
79 asm volatile("tlbsx 0, %[eaddr]\n" : : [eaddr] "r" (eaddr));
80 val = mfspr(SPRN_MAS1);
81 if (val & MAS1_VALID) {
82 mtspr(SPRN_MAS1, val & ~MAS1_VALID);
83 asm volatile("tlbwe");
84 }
85 mtspr(SPRN_MAS5, 0);
86
87 mtspr(SPRN_MAS8, 0);
88 isync();
89
90 local_irq_restore(flags);
91}
92
93void kvmppc_e500_tlbil_all(struct kvmppc_vcpu_e500 *vcpu_e500)
94{
95 unsigned long flags;
96
97 local_irq_save(flags);
98 mtspr(SPRN_MAS5, MAS5_SGS | get_lpid(&vcpu_e500->vcpu));
99 asm volatile("tlbilxlpid");
100 mtspr(SPRN_MAS5, 0);
101 local_irq_restore(flags);
102}
103
104void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid)
105{
106 vcpu->arch.pid = pid;
107}
108
109void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr)
110{
111}
112
113
114static DEFINE_PER_CPU(struct kvm_vcpu *[KVMPPC_NR_LPIDS], last_vcpu_of_lpid);
115
116static void kvmppc_core_vcpu_load_e500mc(struct kvm_vcpu *vcpu, int cpu)
117{
118 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
119
120 kvmppc_booke_vcpu_load(vcpu, cpu);
121
122 mtspr(SPRN_LPID, get_lpid(vcpu));
123 mtspr(SPRN_EPCR, vcpu->arch.shadow_epcr);
124 mtspr(SPRN_GPIR, vcpu->vcpu_id);
125 mtspr(SPRN_MSRP, vcpu->arch.shadow_msrp);
126 vcpu->arch.eplc = EPC_EGS | (get_lpid(vcpu) << EPC_ELPID_SHIFT);
127 vcpu->arch.epsc = vcpu->arch.eplc;
128 mtspr(SPRN_EPLC, vcpu->arch.eplc);
129 mtspr(SPRN_EPSC, vcpu->arch.epsc);
130
131 mtspr(SPRN_GIVPR, vcpu->arch.ivpr);
132 mtspr(SPRN_GIVOR2, vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE]);
133 mtspr(SPRN_GIVOR8, vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL]);
134 mtspr(SPRN_GSPRG0, (unsigned long)vcpu->arch.shared->sprg0);
135 mtspr(SPRN_GSPRG1, (unsigned long)vcpu->arch.shared->sprg1);
136 mtspr(SPRN_GSPRG2, (unsigned long)vcpu->arch.shared->sprg2);
137 mtspr(SPRN_GSPRG3, (unsigned long)vcpu->arch.shared->sprg3);
138
139 mtspr(SPRN_GSRR0, vcpu->arch.shared->srr0);
140 mtspr(SPRN_GSRR1, vcpu->arch.shared->srr1);
141
142 mtspr(SPRN_GEPR, vcpu->arch.epr);
143 mtspr(SPRN_GDEAR, vcpu->arch.shared->dar);
144 mtspr(SPRN_GESR, vcpu->arch.shared->esr);
145
146 if (vcpu->arch.oldpir != mfspr(SPRN_PIR) ||
147 __this_cpu_read(last_vcpu_of_lpid[get_lpid(vcpu)]) != vcpu) {
148 kvmppc_e500_tlbil_all(vcpu_e500);
149 __this_cpu_write(last_vcpu_of_lpid[get_lpid(vcpu)], vcpu);
150 }
151}
152
153static void kvmppc_core_vcpu_put_e500mc(struct kvm_vcpu *vcpu)
154{
155 vcpu->arch.eplc = mfspr(SPRN_EPLC);
156 vcpu->arch.epsc = mfspr(SPRN_EPSC);
157
158 vcpu->arch.shared->sprg0 = mfspr(SPRN_GSPRG0);
159 vcpu->arch.shared->sprg1 = mfspr(SPRN_GSPRG1);
160 vcpu->arch.shared->sprg2 = mfspr(SPRN_GSPRG2);
161 vcpu->arch.shared->sprg3 = mfspr(SPRN_GSPRG3);
162
163 vcpu->arch.shared->srr0 = mfspr(SPRN_GSRR0);
164 vcpu->arch.shared->srr1 = mfspr(SPRN_GSRR1);
165
166 vcpu->arch.epr = mfspr(SPRN_GEPR);
167 vcpu->arch.shared->dar = mfspr(SPRN_GDEAR);
168 vcpu->arch.shared->esr = mfspr(SPRN_GESR);
169
170 vcpu->arch.oldpir = mfspr(SPRN_PIR);
171
172 kvmppc_booke_vcpu_put(vcpu);
173}
174
175int kvmppc_core_check_processor_compat(void)
176{
177 int r;
178
179 if (strcmp(cur_cpu_spec->cpu_name, "e500mc") == 0)
180 r = 0;
181 else if (strcmp(cur_cpu_spec->cpu_name, "e5500") == 0)
182 r = 0;
183#ifdef CONFIG_ALTIVEC
184
185
186
187
188
189
190 else if (strcmp(cur_cpu_spec->cpu_name, "e6500") == 0)
191 r = 0;
192#endif
193 else
194 r = -ENOTSUPP;
195
196 return r;
197}
198
199int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu)
200{
201 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
202
203 vcpu->arch.shadow_epcr = SPRN_EPCR_DSIGS | SPRN_EPCR_DGTMI | \
204 SPRN_EPCR_DUVD;
205#ifdef CONFIG_64BIT
206 vcpu->arch.shadow_epcr |= SPRN_EPCR_ICM;
207#endif
208 vcpu->arch.shadow_msrp = MSRP_UCLEP | MSRP_PMMP;
209
210 vcpu->arch.pvr = mfspr(SPRN_PVR);
211 vcpu_e500->svr = mfspr(SPRN_SVR);
212
213 vcpu->arch.cpu_type = KVM_CPU_E500MC;
214
215 return 0;
216}
217
218static int kvmppc_core_get_sregs_e500mc(struct kvm_vcpu *vcpu,
219 struct kvm_sregs *sregs)
220{
221 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
222
223 sregs->u.e.features |= KVM_SREGS_E_ARCH206_MMU | KVM_SREGS_E_PM |
224 KVM_SREGS_E_PC;
225 sregs->u.e.impl_id = KVM_SREGS_E_IMPL_FSL;
226
227 sregs->u.e.impl.fsl.features = 0;
228 sregs->u.e.impl.fsl.svr = vcpu_e500->svr;
229 sregs->u.e.impl.fsl.hid0 = vcpu_e500->hid0;
230 sregs->u.e.impl.fsl.mcar = vcpu_e500->mcar;
231
232 kvmppc_get_sregs_e500_tlb(vcpu, sregs);
233
234 sregs->u.e.ivor_high[3] =
235 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR];
236 sregs->u.e.ivor_high[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL];
237 sregs->u.e.ivor_high[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT];
238
239 return kvmppc_get_sregs_ivor(vcpu, sregs);
240}
241
242static int kvmppc_core_set_sregs_e500mc(struct kvm_vcpu *vcpu,
243 struct kvm_sregs *sregs)
244{
245 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
246 int ret;
247
248 if (sregs->u.e.impl_id == KVM_SREGS_E_IMPL_FSL) {
249 vcpu_e500->svr = sregs->u.e.impl.fsl.svr;
250 vcpu_e500->hid0 = sregs->u.e.impl.fsl.hid0;
251 vcpu_e500->mcar = sregs->u.e.impl.fsl.mcar;
252 }
253
254 ret = kvmppc_set_sregs_e500_tlb(vcpu, sregs);
255 if (ret < 0)
256 return ret;
257
258 if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
259 return 0;
260
261 if (sregs->u.e.features & KVM_SREGS_E_PM) {
262 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] =
263 sregs->u.e.ivor_high[3];
264 }
265
266 if (sregs->u.e.features & KVM_SREGS_E_PC) {
267 vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL] =
268 sregs->u.e.ivor_high[4];
269 vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT] =
270 sregs->u.e.ivor_high[5];
271 }
272
273 return kvmppc_set_sregs_ivor(vcpu, sregs);
274}
275
276static int kvmppc_get_one_reg_e500mc(struct kvm_vcpu *vcpu, u64 id,
277 union kvmppc_one_reg *val)
278{
279 int r = 0;
280
281 switch (id) {
282 case KVM_REG_PPC_SPRG9:
283 *val = get_reg_val(id, vcpu->arch.sprg9);
284 break;
285 default:
286 r = kvmppc_get_one_reg_e500_tlb(vcpu, id, val);
287 }
288
289 return r;
290}
291
292static int kvmppc_set_one_reg_e500mc(struct kvm_vcpu *vcpu, u64 id,
293 union kvmppc_one_reg *val)
294{
295 int r = 0;
296
297 switch (id) {
298 case KVM_REG_PPC_SPRG9:
299 vcpu->arch.sprg9 = set_reg_val(id, *val);
300 break;
301 default:
302 r = kvmppc_set_one_reg_e500_tlb(vcpu, id, val);
303 }
304
305 return r;
306}
307
308static int kvmppc_core_vcpu_create_e500mc(struct kvm_vcpu *vcpu)
309{
310 struct kvmppc_vcpu_e500 *vcpu_e500;
311 int err;
312
313 BUILD_BUG_ON(offsetof(struct kvmppc_vcpu_e500, vcpu) != 0);
314 vcpu_e500 = to_e500(vcpu);
315
316
317 vcpu->arch.oldpir = 0xffffffff;
318
319 err = kvmppc_e500_tlb_init(vcpu_e500);
320 if (err)
321 return err;
322
323 vcpu->arch.shared = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
324 if (!vcpu->arch.shared) {
325 err = -ENOMEM;
326 goto uninit_tlb;
327 }
328
329 return 0;
330
331uninit_tlb:
332 kvmppc_e500_tlb_uninit(vcpu_e500);
333 return err;
334}
335
336static void kvmppc_core_vcpu_free_e500mc(struct kvm_vcpu *vcpu)
337{
338 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
339
340 free_page((unsigned long)vcpu->arch.shared);
341 kvmppc_e500_tlb_uninit(vcpu_e500);
342}
343
344static int kvmppc_core_init_vm_e500mc(struct kvm *kvm)
345{
346 int lpid;
347
348 lpid = kvmppc_alloc_lpid();
349 if (lpid < 0)
350 return lpid;
351
352
353
354
355
356
357 if (threads_per_core == 2)
358 lpid <<= 1;
359
360 kvm->arch.lpid = lpid;
361 return 0;
362}
363
364static void kvmppc_core_destroy_vm_e500mc(struct kvm *kvm)
365{
366 int lpid = kvm->arch.lpid;
367
368 if (threads_per_core == 2)
369 lpid >>= 1;
370
371 kvmppc_free_lpid(lpid);
372}
373
374static struct kvmppc_ops kvm_ops_e500mc = {
375 .get_sregs = kvmppc_core_get_sregs_e500mc,
376 .set_sregs = kvmppc_core_set_sregs_e500mc,
377 .get_one_reg = kvmppc_get_one_reg_e500mc,
378 .set_one_reg = kvmppc_set_one_reg_e500mc,
379 .vcpu_load = kvmppc_core_vcpu_load_e500mc,
380 .vcpu_put = kvmppc_core_vcpu_put_e500mc,
381 .vcpu_create = kvmppc_core_vcpu_create_e500mc,
382 .vcpu_free = kvmppc_core_vcpu_free_e500mc,
383 .init_vm = kvmppc_core_init_vm_e500mc,
384 .destroy_vm = kvmppc_core_destroy_vm_e500mc,
385 .emulate_op = kvmppc_core_emulate_op_e500,
386 .emulate_mtspr = kvmppc_core_emulate_mtspr_e500,
387 .emulate_mfspr = kvmppc_core_emulate_mfspr_e500,
388};
389
390static int __init kvmppc_e500mc_init(void)
391{
392 int r;
393
394 r = kvmppc_booke_init();
395 if (r)
396 goto err_out;
397
398
399
400
401
402
403
404 kvmppc_init_lpid(KVMPPC_NR_LPIDS/threads_per_core);
405 kvmppc_claim_lpid(0);
406
407 r = kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE);
408 if (r)
409 goto err_out;
410 kvm_ops_e500mc.owner = THIS_MODULE;
411 kvmppc_pr_ops = &kvm_ops_e500mc;
412
413err_out:
414 return r;
415}
416
417static void __exit kvmppc_e500mc_exit(void)
418{
419 kvmppc_pr_ops = NULL;
420 kvmppc_booke_exit();
421}
422
423module_init(kvmppc_e500mc_init);
424module_exit(kvmppc_e500mc_exit);
425MODULE_ALIAS_MISCDEV(KVM_MINOR);
426MODULE_ALIAS("devname:kvm");
427
