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12#include <linux/kvm_host.h>
13#include <linux/slab.h>
14#include <linux/err.h>
15#include <linux/export.h>
16#include <linux/miscdevice.h>
17#include <linux/module.h>
18
19#include <asm/reg.h>
20#include <asm/cputable.h>
21#include <asm/kvm_ppc.h>
22#include <asm/dbell.h>
23
24#include "booke.h"
25#include "e500.h"
26
27void kvmppc_set_pending_interrupt(struct kvm_vcpu *vcpu, enum int_class type)
28{
29 enum ppc_dbell dbell_type;
30 unsigned long tag;
31
32 switch (type) {
33 case INT_CLASS_NONCRIT:
34 dbell_type = PPC_G_DBELL;
35 break;
36 case INT_CLASS_CRIT:
37 dbell_type = PPC_G_DBELL_CRIT;
38 break;
39 case INT_CLASS_MC:
40 dbell_type = PPC_G_DBELL_MC;
41 break;
42 default:
43 WARN_ONCE(1, "%s: unknown int type %d\n", __func__, type);
44 return;
45 }
46
47 preempt_disable();
48 tag = PPC_DBELL_LPID(get_lpid(vcpu)) | vcpu->vcpu_id;
49 mb();
50 ppc_msgsnd(dbell_type, 0, tag);
51 preempt_enable();
52}
53
54
55void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500,
56 struct kvm_book3e_206_tlb_entry *gtlbe)
57{
58 unsigned int tid, ts;
59 gva_t eaddr;
60 u32 val;
61 unsigned long flags;
62
63 ts = get_tlb_ts(gtlbe);
64 tid = get_tlb_tid(gtlbe);
65
66
67 val = (tid << 16) | ts;
68 eaddr = get_tlb_eaddr(gtlbe);
69
70 local_irq_save(flags);
71
72 mtspr(SPRN_MAS6, val);
73 mtspr(SPRN_MAS5, MAS5_SGS | get_lpid(&vcpu_e500->vcpu));
74
75 asm volatile("tlbsx 0, %[eaddr]\n" : : [eaddr] "r" (eaddr));
76 val = mfspr(SPRN_MAS1);
77 if (val & MAS1_VALID) {
78 mtspr(SPRN_MAS1, val & ~MAS1_VALID);
79 asm volatile("tlbwe");
80 }
81 mtspr(SPRN_MAS5, 0);
82
83 mtspr(SPRN_MAS8, 0);
84 isync();
85
86 local_irq_restore(flags);
87}
88
89void kvmppc_e500_tlbil_all(struct kvmppc_vcpu_e500 *vcpu_e500)
90{
91 unsigned long flags;
92
93 local_irq_save(flags);
94 mtspr(SPRN_MAS5, MAS5_SGS | get_lpid(&vcpu_e500->vcpu));
95 asm volatile("tlbilxlpid");
96 mtspr(SPRN_MAS5, 0);
97 local_irq_restore(flags);
98}
99
100void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid)
101{
102 vcpu->arch.pid = pid;
103}
104
105void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr)
106{
107}
108
109
110static DEFINE_PER_CPU(struct kvm_vcpu *[KVMPPC_NR_LPIDS], last_vcpu_of_lpid);
111
112static void kvmppc_core_vcpu_load_e500mc(struct kvm_vcpu *vcpu, int cpu)
113{
114 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
115
116 kvmppc_booke_vcpu_load(vcpu, cpu);
117
118 mtspr(SPRN_LPID, get_lpid(vcpu));
119 mtspr(SPRN_EPCR, vcpu->arch.shadow_epcr);
120 mtspr(SPRN_GPIR, vcpu->vcpu_id);
121 mtspr(SPRN_MSRP, vcpu->arch.shadow_msrp);
122 vcpu->arch.eplc = EPC_EGS | (get_lpid(vcpu) << EPC_ELPID_SHIFT);
123 vcpu->arch.epsc = vcpu->arch.eplc;
124 mtspr(SPRN_EPLC, vcpu->arch.eplc);
125 mtspr(SPRN_EPSC, vcpu->arch.epsc);
126
127 mtspr(SPRN_GIVPR, vcpu->arch.ivpr);
128 mtspr(SPRN_GIVOR2, vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE]);
129 mtspr(SPRN_GIVOR8, vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL]);
130 mtspr(SPRN_GSPRG0, (unsigned long)vcpu->arch.shared->sprg0);
131 mtspr(SPRN_GSPRG1, (unsigned long)vcpu->arch.shared->sprg1);
132 mtspr(SPRN_GSPRG2, (unsigned long)vcpu->arch.shared->sprg2);
133 mtspr(SPRN_GSPRG3, (unsigned long)vcpu->arch.shared->sprg3);
134
135 mtspr(SPRN_GSRR0, vcpu->arch.shared->srr0);
136 mtspr(SPRN_GSRR1, vcpu->arch.shared->srr1);
137
138 mtspr(SPRN_GEPR, vcpu->arch.epr);
139 mtspr(SPRN_GDEAR, vcpu->arch.shared->dar);
140 mtspr(SPRN_GESR, vcpu->arch.shared->esr);
141
142 if (vcpu->arch.oldpir != mfspr(SPRN_PIR) ||
143 __this_cpu_read(last_vcpu_of_lpid[get_lpid(vcpu)]) != vcpu) {
144 kvmppc_e500_tlbil_all(vcpu_e500);
145 __this_cpu_write(last_vcpu_of_lpid[get_lpid(vcpu)], vcpu);
146 }
147}
148
149static void kvmppc_core_vcpu_put_e500mc(struct kvm_vcpu *vcpu)
150{
151 vcpu->arch.eplc = mfspr(SPRN_EPLC);
152 vcpu->arch.epsc = mfspr(SPRN_EPSC);
153
154 vcpu->arch.shared->sprg0 = mfspr(SPRN_GSPRG0);
155 vcpu->arch.shared->sprg1 = mfspr(SPRN_GSPRG1);
156 vcpu->arch.shared->sprg2 = mfspr(SPRN_GSPRG2);
157 vcpu->arch.shared->sprg3 = mfspr(SPRN_GSPRG3);
158
159 vcpu->arch.shared->srr0 = mfspr(SPRN_GSRR0);
160 vcpu->arch.shared->srr1 = mfspr(SPRN_GSRR1);
161
162 vcpu->arch.epr = mfspr(SPRN_GEPR);
163 vcpu->arch.shared->dar = mfspr(SPRN_GDEAR);
164 vcpu->arch.shared->esr = mfspr(SPRN_GESR);
165
166 vcpu->arch.oldpir = mfspr(SPRN_PIR);
167
168 kvmppc_booke_vcpu_put(vcpu);
169}
170
171int kvmppc_core_check_processor_compat(void)
172{
173 int r;
174
175 if (strcmp(cur_cpu_spec->cpu_name, "e500mc") == 0)
176 r = 0;
177 else if (strcmp(cur_cpu_spec->cpu_name, "e5500") == 0)
178 r = 0;
179#ifdef CONFIG_ALTIVEC
180
181
182
183
184
185
186 else if (strcmp(cur_cpu_spec->cpu_name, "e6500") == 0)
187 r = 0;
188#endif
189 else
190 r = -ENOTSUPP;
191
192 return r;
193}
194
195int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu)
196{
197 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
198
199 vcpu->arch.shadow_epcr = SPRN_EPCR_DSIGS | SPRN_EPCR_DGTMI | \
200 SPRN_EPCR_DUVD;
201#ifdef CONFIG_64BIT
202 vcpu->arch.shadow_epcr |= SPRN_EPCR_ICM;
203#endif
204 vcpu->arch.shadow_msrp = MSRP_UCLEP | MSRP_PMMP;
205
206 vcpu->arch.pvr = mfspr(SPRN_PVR);
207 vcpu_e500->svr = mfspr(SPRN_SVR);
208
209 vcpu->arch.cpu_type = KVM_CPU_E500MC;
210
211 return 0;
212}
213
214static int kvmppc_core_get_sregs_e500mc(struct kvm_vcpu *vcpu,
215 struct kvm_sregs *sregs)
216{
217 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
218
219 sregs->u.e.features |= KVM_SREGS_E_ARCH206_MMU | KVM_SREGS_E_PM |
220 KVM_SREGS_E_PC;
221 sregs->u.e.impl_id = KVM_SREGS_E_IMPL_FSL;
222
223 sregs->u.e.impl.fsl.features = 0;
224 sregs->u.e.impl.fsl.svr = vcpu_e500->svr;
225 sregs->u.e.impl.fsl.hid0 = vcpu_e500->hid0;
226 sregs->u.e.impl.fsl.mcar = vcpu_e500->mcar;
227
228 kvmppc_get_sregs_e500_tlb(vcpu, sregs);
229
230 sregs->u.e.ivor_high[3] =
231 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR];
232 sregs->u.e.ivor_high[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL];
233 sregs->u.e.ivor_high[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT];
234
235 return kvmppc_get_sregs_ivor(vcpu, sregs);
236}
237
238static int kvmppc_core_set_sregs_e500mc(struct kvm_vcpu *vcpu,
239 struct kvm_sregs *sregs)
240{
241 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
242 int ret;
243
244 if (sregs->u.e.impl_id == KVM_SREGS_E_IMPL_FSL) {
245 vcpu_e500->svr = sregs->u.e.impl.fsl.svr;
246 vcpu_e500->hid0 = sregs->u.e.impl.fsl.hid0;
247 vcpu_e500->mcar = sregs->u.e.impl.fsl.mcar;
248 }
249
250 ret = kvmppc_set_sregs_e500_tlb(vcpu, sregs);
251 if (ret < 0)
252 return ret;
253
254 if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
255 return 0;
256
257 if (sregs->u.e.features & KVM_SREGS_E_PM) {
258 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] =
259 sregs->u.e.ivor_high[3];
260 }
261
262 if (sregs->u.e.features & KVM_SREGS_E_PC) {
263 vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL] =
264 sregs->u.e.ivor_high[4];
265 vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT] =
266 sregs->u.e.ivor_high[5];
267 }
268
269 return kvmppc_set_sregs_ivor(vcpu, sregs);
270}
271
272static int kvmppc_get_one_reg_e500mc(struct kvm_vcpu *vcpu, u64 id,
273 union kvmppc_one_reg *val)
274{
275 int r = 0;
276
277 switch (id) {
278 case KVM_REG_PPC_SPRG9:
279 *val = get_reg_val(id, vcpu->arch.sprg9);
280 break;
281 default:
282 r = kvmppc_get_one_reg_e500_tlb(vcpu, id, val);
283 }
284
285 return r;
286}
287
288static int kvmppc_set_one_reg_e500mc(struct kvm_vcpu *vcpu, u64 id,
289 union kvmppc_one_reg *val)
290{
291 int r = 0;
292
293 switch (id) {
294 case KVM_REG_PPC_SPRG9:
295 vcpu->arch.sprg9 = set_reg_val(id, *val);
296 break;
297 default:
298 r = kvmppc_set_one_reg_e500_tlb(vcpu, id, val);
299 }
300
301 return r;
302}
303
304static int kvmppc_core_vcpu_create_e500mc(struct kvm_vcpu *vcpu)
305{
306 struct kvmppc_vcpu_e500 *vcpu_e500;
307 int err;
308
309 BUILD_BUG_ON(offsetof(struct kvmppc_vcpu_e500, vcpu) != 0);
310 vcpu_e500 = to_e500(vcpu);
311
312
313 vcpu->arch.oldpir = 0xffffffff;
314
315 err = kvmppc_e500_tlb_init(vcpu_e500);
316 if (err)
317 return err;
318
319 vcpu->arch.shared = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
320 if (!vcpu->arch.shared) {
321 err = -ENOMEM;
322 goto uninit_tlb;
323 }
324
325 return 0;
326
327uninit_tlb:
328 kvmppc_e500_tlb_uninit(vcpu_e500);
329 return err;
330}
331
332static void kvmppc_core_vcpu_free_e500mc(struct kvm_vcpu *vcpu)
333{
334 struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
335
336 free_page((unsigned long)vcpu->arch.shared);
337 kvmppc_e500_tlb_uninit(vcpu_e500);
338}
339
340static int kvmppc_core_init_vm_e500mc(struct kvm *kvm)
341{
342 int lpid;
343
344 lpid = kvmppc_alloc_lpid();
345 if (lpid < 0)
346 return lpid;
347
348
349
350
351
352
353 if (threads_per_core == 2)
354 lpid <<= 1;
355
356 kvm->arch.lpid = lpid;
357 return 0;
358}
359
360static void kvmppc_core_destroy_vm_e500mc(struct kvm *kvm)
361{
362 int lpid = kvm->arch.lpid;
363
364 if (threads_per_core == 2)
365 lpid >>= 1;
366
367 kvmppc_free_lpid(lpid);
368}
369
370static struct kvmppc_ops kvm_ops_e500mc = {
371 .get_sregs = kvmppc_core_get_sregs_e500mc,
372 .set_sregs = kvmppc_core_set_sregs_e500mc,
373 .get_one_reg = kvmppc_get_one_reg_e500mc,
374 .set_one_reg = kvmppc_set_one_reg_e500mc,
375 .vcpu_load = kvmppc_core_vcpu_load_e500mc,
376 .vcpu_put = kvmppc_core_vcpu_put_e500mc,
377 .vcpu_create = kvmppc_core_vcpu_create_e500mc,
378 .vcpu_free = kvmppc_core_vcpu_free_e500mc,
379 .init_vm = kvmppc_core_init_vm_e500mc,
380 .destroy_vm = kvmppc_core_destroy_vm_e500mc,
381 .emulate_op = kvmppc_core_emulate_op_e500,
382 .emulate_mtspr = kvmppc_core_emulate_mtspr_e500,
383 .emulate_mfspr = kvmppc_core_emulate_mfspr_e500,
384};
385
386static int __init kvmppc_e500mc_init(void)
387{
388 int r;
389
390 r = kvmppc_booke_init();
391 if (r)
392 goto err_out;
393
394
395
396
397
398
399
400 kvmppc_init_lpid(KVMPPC_NR_LPIDS/threads_per_core);
401 kvmppc_claim_lpid(0);
402
403 r = kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE);
404 if (r)
405 goto err_out;
406 kvm_ops_e500mc.owner = THIS_MODULE;
407 kvmppc_pr_ops = &kvm_ops_e500mc;
408
409err_out:
410 return r;
411}
412
413static void __exit kvmppc_e500mc_exit(void)
414{
415 kvmppc_pr_ops = NULL;
416 kvmppc_booke_exit();
417}
418
419module_init(kvmppc_e500mc_init);
420module_exit(kvmppc_e500mc_exit);
421MODULE_ALIAS_MISCDEV(KVM_MINOR);
422MODULE_ALIAS("devname:kvm");
423
