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b024b793 XZ |
1 | /* |
2 | * kvm_ia64.c: Basic KVM suppport On Itanium series processors | |
3 | * | |
4 | * | |
5 | * Copyright (C) 2007, Intel Corporation. | |
6 | * Xiantao Zhang (xiantao.zhang@intel.com) | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms and conditions of the GNU General Public License, | |
10 | * version 2, as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
19 | * Place - Suite 330, Boston, MA 02111-1307 USA. | |
20 | * | |
21 | */ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/errno.h> | |
25 | #include <linux/percpu.h> | |
26 | #include <linux/gfp.h> | |
27 | #include <linux/fs.h> | |
28 | #include <linux/smp.h> | |
29 | #include <linux/kvm_host.h> | |
30 | #include <linux/kvm.h> | |
31 | #include <linux/bitops.h> | |
32 | #include <linux/hrtimer.h> | |
33 | #include <linux/uaccess.h> | |
19de40a8 | 34 | #include <linux/iommu.h> |
2381ad24 | 35 | #include <linux/intel-iommu.h> |
b024b793 XZ |
36 | |
37 | #include <asm/pgtable.h> | |
38 | #include <asm/gcc_intrin.h> | |
39 | #include <asm/pal.h> | |
40 | #include <asm/cacheflush.h> | |
41 | #include <asm/div64.h> | |
42 | #include <asm/tlb.h> | |
9f726323 | 43 | #include <asm/elf.h> |
0c72ea7f JS |
44 | #include <asm/sn/addrs.h> |
45 | #include <asm/sn/clksupport.h> | |
46 | #include <asm/sn/shub_mmr.h> | |
b024b793 XZ |
47 | |
48 | #include "misc.h" | |
49 | #include "vti.h" | |
50 | #include "iodev.h" | |
51 | #include "ioapic.h" | |
52 | #include "lapic.h" | |
2f749771 | 53 | #include "irq.h" |
b024b793 XZ |
54 | |
55 | static unsigned long kvm_vmm_base; | |
56 | static unsigned long kvm_vsa_base; | |
57 | static unsigned long kvm_vm_buffer; | |
58 | static unsigned long kvm_vm_buffer_size; | |
59 | unsigned long kvm_vmm_gp; | |
60 | ||
61 | static long vp_env_info; | |
62 | ||
63 | static struct kvm_vmm_info *kvm_vmm_info; | |
64 | ||
65 | static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu); | |
66 | ||
67 | struct kvm_stats_debugfs_item debugfs_entries[] = { | |
68 | { NULL } | |
69 | }; | |
70 | ||
c6c9fcdf JS |
71 | static unsigned long kvm_get_itc(struct kvm_vcpu *vcpu) |
72 | { | |
73 | #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC) | |
74 | if (vcpu->kvm->arch.is_sn2) | |
75 | return rtc_time(); | |
76 | else | |
77 | #endif | |
78 | return ia64_getreg(_IA64_REG_AR_ITC); | |
79 | } | |
80 | ||
b024b793 XZ |
81 | static void kvm_flush_icache(unsigned long start, unsigned long len) |
82 | { | |
83 | int l; | |
84 | ||
85 | for (l = 0; l < (len + 32); l += 32) | |
7120569c | 86 | ia64_fc((void *)(start + l)); |
b024b793 XZ |
87 | |
88 | ia64_sync_i(); | |
89 | ia64_srlz_i(); | |
90 | } | |
91 | ||
92 | static void kvm_flush_tlb_all(void) | |
93 | { | |
94 | unsigned long i, j, count0, count1, stride0, stride1, addr; | |
95 | long flags; | |
96 | ||
97 | addr = local_cpu_data->ptce_base; | |
98 | count0 = local_cpu_data->ptce_count[0]; | |
99 | count1 = local_cpu_data->ptce_count[1]; | |
100 | stride0 = local_cpu_data->ptce_stride[0]; | |
101 | stride1 = local_cpu_data->ptce_stride[1]; | |
102 | ||
103 | local_irq_save(flags); | |
104 | for (i = 0; i < count0; ++i) { | |
105 | for (j = 0; j < count1; ++j) { | |
106 | ia64_ptce(addr); | |
107 | addr += stride1; | |
108 | } | |
109 | addr += stride0; | |
110 | } | |
111 | local_irq_restore(flags); | |
112 | ia64_srlz_i(); /* srlz.i implies srlz.d */ | |
113 | } | |
114 | ||
115 | long ia64_pal_vp_create(u64 *vpd, u64 *host_iva, u64 *opt_handler) | |
116 | { | |
117 | struct ia64_pal_retval iprv; | |
118 | ||
119 | PAL_CALL_STK(iprv, PAL_VP_CREATE, (u64)vpd, (u64)host_iva, | |
120 | (u64)opt_handler); | |
121 | ||
122 | return iprv.status; | |
123 | } | |
124 | ||
125 | static DEFINE_SPINLOCK(vp_lock); | |
126 | ||
127 | void kvm_arch_hardware_enable(void *garbage) | |
128 | { | |
129 | long status; | |
130 | long tmp_base; | |
131 | unsigned long pte; | |
132 | unsigned long saved_psr; | |
133 | int slot; | |
134 | ||
0c72ea7f | 135 | pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL)); |
b024b793 XZ |
136 | local_irq_save(saved_psr); |
137 | slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT); | |
cab7a1ee | 138 | local_irq_restore(saved_psr); |
b024b793 XZ |
139 | if (slot < 0) |
140 | return; | |
b024b793 XZ |
141 | |
142 | spin_lock(&vp_lock); | |
143 | status = ia64_pal_vp_init_env(kvm_vsa_base ? | |
144 | VP_INIT_ENV : VP_INIT_ENV_INITALIZE, | |
145 | __pa(kvm_vm_buffer), KVM_VM_BUFFER_BASE, &tmp_base); | |
146 | if (status != 0) { | |
147 | printk(KERN_WARNING"kvm: Failed to Enable VT Support!!!!\n"); | |
148 | return ; | |
149 | } | |
150 | ||
151 | if (!kvm_vsa_base) { | |
152 | kvm_vsa_base = tmp_base; | |
153 | printk(KERN_INFO"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base); | |
154 | } | |
155 | spin_unlock(&vp_lock); | |
156 | ia64_ptr_entry(0x3, slot); | |
157 | } | |
158 | ||
159 | void kvm_arch_hardware_disable(void *garbage) | |
160 | { | |
161 | ||
162 | long status; | |
163 | int slot; | |
164 | unsigned long pte; | |
165 | unsigned long saved_psr; | |
166 | unsigned long host_iva = ia64_getreg(_IA64_REG_CR_IVA); | |
167 | ||
168 | pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), | |
169 | PAGE_KERNEL)); | |
170 | ||
171 | local_irq_save(saved_psr); | |
172 | slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT); | |
cab7a1ee | 173 | local_irq_restore(saved_psr); |
b024b793 XZ |
174 | if (slot < 0) |
175 | return; | |
b024b793 XZ |
176 | |
177 | status = ia64_pal_vp_exit_env(host_iva); | |
178 | if (status) | |
179 | printk(KERN_DEBUG"kvm: Failed to disable VT support! :%ld\n", | |
180 | status); | |
181 | ia64_ptr_entry(0x3, slot); | |
182 | } | |
183 | ||
184 | void kvm_arch_check_processor_compat(void *rtn) | |
185 | { | |
186 | *(int *)rtn = 0; | |
187 | } | |
188 | ||
189 | int kvm_dev_ioctl_check_extension(long ext) | |
190 | { | |
191 | ||
192 | int r; | |
193 | ||
194 | switch (ext) { | |
195 | case KVM_CAP_IRQCHIP: | |
8c4b537d | 196 | case KVM_CAP_MP_STATE: |
4925663a | 197 | case KVM_CAP_IRQ_INJECT_STATUS: |
b024b793 XZ |
198 | r = 1; |
199 | break; | |
7f39f8ac LV |
200 | case KVM_CAP_COALESCED_MMIO: |
201 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
202 | break; | |
2381ad24 | 203 | case KVM_CAP_IOMMU: |
19de40a8 | 204 | r = iommu_found(); |
2381ad24 | 205 | break; |
b024b793 XZ |
206 | default: |
207 | r = 0; | |
208 | } | |
209 | return r; | |
210 | ||
211 | } | |
212 | ||
213 | static struct kvm_io_device *vcpu_find_mmio_dev(struct kvm_vcpu *vcpu, | |
92760499 | 214 | gpa_t addr, int len, int is_write) |
b024b793 XZ |
215 | { |
216 | struct kvm_io_device *dev; | |
217 | ||
92760499 | 218 | dev = kvm_io_bus_find_dev(&vcpu->kvm->mmio_bus, addr, len, is_write); |
b024b793 XZ |
219 | |
220 | return dev; | |
221 | } | |
222 | ||
223 | static int handle_vm_error(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
224 | { | |
225 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
226 | kvm_run->hw.hardware_exit_reason = 1; | |
227 | return 0; | |
228 | } | |
229 | ||
230 | static int handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
231 | { | |
232 | struct kvm_mmio_req *p; | |
233 | struct kvm_io_device *mmio_dev; | |
234 | ||
235 | p = kvm_get_vcpu_ioreq(vcpu); | |
236 | ||
237 | if ((p->addr & PAGE_MASK) == IOAPIC_DEFAULT_BASE_ADDRESS) | |
238 | goto mmio; | |
239 | vcpu->mmio_needed = 1; | |
240 | vcpu->mmio_phys_addr = kvm_run->mmio.phys_addr = p->addr; | |
241 | vcpu->mmio_size = kvm_run->mmio.len = p->size; | |
242 | vcpu->mmio_is_write = kvm_run->mmio.is_write = !p->dir; | |
243 | ||
244 | if (vcpu->mmio_is_write) | |
245 | memcpy(vcpu->mmio_data, &p->data, p->size); | |
246 | memcpy(kvm_run->mmio.data, &p->data, p->size); | |
247 | kvm_run->exit_reason = KVM_EXIT_MMIO; | |
248 | return 0; | |
249 | mmio: | |
92760499 | 250 | mmio_dev = vcpu_find_mmio_dev(vcpu, p->addr, p->size, !p->dir); |
b024b793 XZ |
251 | if (mmio_dev) { |
252 | if (!p->dir) | |
253 | kvm_iodevice_write(mmio_dev, p->addr, p->size, | |
254 | &p->data); | |
255 | else | |
256 | kvm_iodevice_read(mmio_dev, p->addr, p->size, | |
257 | &p->data); | |
258 | ||
259 | } else | |
260 | printk(KERN_ERR"kvm: No iodevice found! addr:%lx\n", p->addr); | |
261 | p->state = STATE_IORESP_READY; | |
262 | ||
263 | return 1; | |
264 | } | |
265 | ||
266 | static int handle_pal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
267 | { | |
268 | struct exit_ctl_data *p; | |
269 | ||
270 | p = kvm_get_exit_data(vcpu); | |
271 | ||
272 | if (p->exit_reason == EXIT_REASON_PAL_CALL) | |
273 | return kvm_pal_emul(vcpu, kvm_run); | |
274 | else { | |
275 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
276 | kvm_run->hw.hardware_exit_reason = 2; | |
277 | return 0; | |
278 | } | |
279 | } | |
280 | ||
281 | static int handle_sal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
282 | { | |
283 | struct exit_ctl_data *p; | |
284 | ||
285 | p = kvm_get_exit_data(vcpu); | |
286 | ||
287 | if (p->exit_reason == EXIT_REASON_SAL_CALL) { | |
288 | kvm_sal_emul(vcpu); | |
289 | return 1; | |
290 | } else { | |
291 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
292 | kvm_run->hw.hardware_exit_reason = 3; | |
293 | return 0; | |
294 | } | |
295 | ||
296 | } | |
297 | ||
58c2dde1 GN |
298 | static int __apic_accept_irq(struct kvm_vcpu *vcpu, uint64_t vector) |
299 | { | |
300 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); | |
301 | ||
302 | if (!test_and_set_bit(vector, &vpd->irr[0])) { | |
303 | vcpu->arch.irq_new_pending = 1; | |
304 | kvm_vcpu_kick(vcpu); | |
305 | return 1; | |
306 | } | |
307 | return 0; | |
308 | } | |
309 | ||
b024b793 XZ |
310 | /* |
311 | * offset: address offset to IPI space. | |
312 | * value: deliver value. | |
313 | */ | |
314 | static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm, | |
315 | uint64_t vector) | |
316 | { | |
317 | switch (dm) { | |
318 | case SAPIC_FIXED: | |
b024b793 XZ |
319 | break; |
320 | case SAPIC_NMI: | |
58c2dde1 | 321 | vector = 2; |
b024b793 XZ |
322 | break; |
323 | case SAPIC_EXTINT: | |
58c2dde1 | 324 | vector = 0; |
b024b793 XZ |
325 | break; |
326 | case SAPIC_INIT: | |
327 | case SAPIC_PMI: | |
328 | default: | |
329 | printk(KERN_ERR"kvm: Unimplemented Deliver reserved IPI!\n"); | |
58c2dde1 | 330 | return; |
b024b793 | 331 | } |
58c2dde1 | 332 | __apic_accept_irq(vcpu, vector); |
b024b793 XZ |
333 | } |
334 | ||
335 | static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id, | |
336 | unsigned long eid) | |
337 | { | |
338 | union ia64_lid lid; | |
339 | int i; | |
340 | ||
934d534f | 341 | for (i = 0; i < kvm->arch.online_vcpus; i++) { |
b024b793 XZ |
342 | if (kvm->vcpus[i]) { |
343 | lid.val = VCPU_LID(kvm->vcpus[i]); | |
344 | if (lid.id == id && lid.eid == eid) | |
345 | return kvm->vcpus[i]; | |
346 | } | |
347 | } | |
348 | ||
349 | return NULL; | |
350 | } | |
351 | ||
352 | static int handle_ipi(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
353 | { | |
354 | struct exit_ctl_data *p = kvm_get_exit_data(vcpu); | |
355 | struct kvm_vcpu *target_vcpu; | |
356 | struct kvm_pt_regs *regs; | |
357 | union ia64_ipi_a addr = p->u.ipi_data.addr; | |
358 | union ia64_ipi_d data = p->u.ipi_data.data; | |
359 | ||
360 | target_vcpu = lid_to_vcpu(vcpu->kvm, addr.id, addr.eid); | |
361 | if (!target_vcpu) | |
362 | return handle_vm_error(vcpu, kvm_run); | |
363 | ||
364 | if (!target_vcpu->arch.launched) { | |
365 | regs = vcpu_regs(target_vcpu); | |
366 | ||
367 | regs->cr_iip = vcpu->kvm->arch.rdv_sal_data.boot_ip; | |
368 | regs->r1 = vcpu->kvm->arch.rdv_sal_data.boot_gp; | |
369 | ||
a4535290 | 370 | target_vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; |
b024b793 XZ |
371 | if (waitqueue_active(&target_vcpu->wq)) |
372 | wake_up_interruptible(&target_vcpu->wq); | |
373 | } else { | |
374 | vcpu_deliver_ipi(target_vcpu, data.dm, data.vector); | |
375 | if (target_vcpu != vcpu) | |
376 | kvm_vcpu_kick(target_vcpu); | |
377 | } | |
378 | ||
379 | return 1; | |
380 | } | |
381 | ||
382 | struct call_data { | |
383 | struct kvm_ptc_g ptc_g_data; | |
384 | struct kvm_vcpu *vcpu; | |
385 | }; | |
386 | ||
387 | static void vcpu_global_purge(void *info) | |
388 | { | |
389 | struct call_data *p = (struct call_data *)info; | |
390 | struct kvm_vcpu *vcpu = p->vcpu; | |
391 | ||
392 | if (test_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests)) | |
393 | return; | |
394 | ||
395 | set_bit(KVM_REQ_PTC_G, &vcpu->requests); | |
396 | if (vcpu->arch.ptc_g_count < MAX_PTC_G_NUM) { | |
397 | vcpu->arch.ptc_g_data[vcpu->arch.ptc_g_count++] = | |
398 | p->ptc_g_data; | |
399 | } else { | |
400 | clear_bit(KVM_REQ_PTC_G, &vcpu->requests); | |
401 | vcpu->arch.ptc_g_count = 0; | |
402 | set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests); | |
403 | } | |
404 | } | |
405 | ||
406 | static int handle_global_purge(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
407 | { | |
408 | struct exit_ctl_data *p = kvm_get_exit_data(vcpu); | |
409 | struct kvm *kvm = vcpu->kvm; | |
410 | struct call_data call_data; | |
411 | int i; | |
decc9016 | 412 | |
b024b793 XZ |
413 | call_data.ptc_g_data = p->u.ptc_g_data; |
414 | ||
934d534f | 415 | for (i = 0; i < kvm->arch.online_vcpus; i++) { |
b024b793 | 416 | if (!kvm->vcpus[i] || kvm->vcpus[i]->arch.mp_state == |
a4535290 | 417 | KVM_MP_STATE_UNINITIALIZED || |
b024b793 XZ |
418 | vcpu == kvm->vcpus[i]) |
419 | continue; | |
420 | ||
421 | if (waitqueue_active(&kvm->vcpus[i]->wq)) | |
422 | wake_up_interruptible(&kvm->vcpus[i]->wq); | |
423 | ||
424 | if (kvm->vcpus[i]->cpu != -1) { | |
425 | call_data.vcpu = kvm->vcpus[i]; | |
426 | smp_call_function_single(kvm->vcpus[i]->cpu, | |
2f73ccab | 427 | vcpu_global_purge, &call_data, 1); |
b024b793 XZ |
428 | } else |
429 | printk(KERN_WARNING"kvm: Uninit vcpu received ipi!\n"); | |
430 | ||
431 | } | |
432 | return 1; | |
433 | } | |
434 | ||
435 | static int handle_switch_rr6(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
436 | { | |
437 | return 1; | |
438 | } | |
439 | ||
0c72ea7f JS |
440 | static int kvm_sn2_setup_mappings(struct kvm_vcpu *vcpu) |
441 | { | |
442 | unsigned long pte, rtc_phys_addr, map_addr; | |
443 | int slot; | |
444 | ||
445 | map_addr = KVM_VMM_BASE + (1UL << KVM_VMM_SHIFT); | |
446 | rtc_phys_addr = LOCAL_MMR_OFFSET | SH_RTC; | |
447 | pte = pte_val(mk_pte_phys(rtc_phys_addr, PAGE_KERNEL_UC)); | |
448 | slot = ia64_itr_entry(0x3, map_addr, pte, PAGE_SHIFT); | |
449 | vcpu->arch.sn_rtc_tr_slot = slot; | |
450 | if (slot < 0) { | |
451 | printk(KERN_ERR "Mayday mayday! RTC mapping failed!\n"); | |
452 | slot = 0; | |
453 | } | |
454 | return slot; | |
455 | } | |
456 | ||
b024b793 XZ |
457 | int kvm_emulate_halt(struct kvm_vcpu *vcpu) |
458 | { | |
459 | ||
460 | ktime_t kt; | |
461 | long itc_diff; | |
462 | unsigned long vcpu_now_itc; | |
b024b793 XZ |
463 | unsigned long expires; |
464 | struct hrtimer *p_ht = &vcpu->arch.hlt_timer; | |
465 | unsigned long cyc_per_usec = local_cpu_data->cyc_per_usec; | |
466 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); | |
467 | ||
decc9016 | 468 | if (irqchip_in_kernel(vcpu->kvm)) { |
b024b793 | 469 | |
c6c9fcdf | 470 | vcpu_now_itc = kvm_get_itc(vcpu) + vcpu->arch.itc_offset; |
b024b793 | 471 | |
decc9016 XZ |
472 | if (time_after(vcpu_now_itc, vpd->itm)) { |
473 | vcpu->arch.timer_check = 1; | |
474 | return 1; | |
475 | } | |
476 | itc_diff = vpd->itm - vcpu_now_itc; | |
477 | if (itc_diff < 0) | |
478 | itc_diff = -itc_diff; | |
479 | ||
480 | expires = div64_u64(itc_diff, cyc_per_usec); | |
481 | kt = ktime_set(0, 1000 * expires); | |
482 | ||
decc9016 XZ |
483 | vcpu->arch.ht_active = 1; |
484 | hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS); | |
b024b793 | 485 | |
a4535290 | 486 | vcpu->arch.mp_state = KVM_MP_STATE_HALTED; |
b024b793 XZ |
487 | kvm_vcpu_block(vcpu); |
488 | hrtimer_cancel(p_ht); | |
489 | vcpu->arch.ht_active = 0; | |
490 | ||
09cec754 GN |
491 | if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests) || |
492 | kvm_cpu_has_pending_timer(vcpu)) | |
decc9016 | 493 | if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED) |
09cec754 | 494 | vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; |
decc9016 | 495 | |
a4535290 | 496 | if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE) |
b024b793 XZ |
497 | return -EINTR; |
498 | return 1; | |
499 | } else { | |
500 | printk(KERN_ERR"kvm: Unsupported userspace halt!"); | |
501 | return 0; | |
502 | } | |
503 | } | |
504 | ||
505 | static int handle_vm_shutdown(struct kvm_vcpu *vcpu, | |
506 | struct kvm_run *kvm_run) | |
507 | { | |
508 | kvm_run->exit_reason = KVM_EXIT_SHUTDOWN; | |
509 | return 0; | |
510 | } | |
511 | ||
512 | static int handle_external_interrupt(struct kvm_vcpu *vcpu, | |
513 | struct kvm_run *kvm_run) | |
514 | { | |
515 | return 1; | |
516 | } | |
517 | ||
7d637978 XZ |
518 | static int handle_vcpu_debug(struct kvm_vcpu *vcpu, |
519 | struct kvm_run *kvm_run) | |
520 | { | |
521 | printk("VMM: %s", vcpu->arch.log_buf); | |
522 | return 1; | |
523 | } | |
524 | ||
b024b793 XZ |
525 | static int (*kvm_vti_exit_handlers[])(struct kvm_vcpu *vcpu, |
526 | struct kvm_run *kvm_run) = { | |
527 | [EXIT_REASON_VM_PANIC] = handle_vm_error, | |
528 | [EXIT_REASON_MMIO_INSTRUCTION] = handle_mmio, | |
529 | [EXIT_REASON_PAL_CALL] = handle_pal_call, | |
530 | [EXIT_REASON_SAL_CALL] = handle_sal_call, | |
531 | [EXIT_REASON_SWITCH_RR6] = handle_switch_rr6, | |
532 | [EXIT_REASON_VM_DESTROY] = handle_vm_shutdown, | |
533 | [EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt, | |
534 | [EXIT_REASON_IPI] = handle_ipi, | |
535 | [EXIT_REASON_PTC_G] = handle_global_purge, | |
7d637978 | 536 | [EXIT_REASON_DEBUG] = handle_vcpu_debug, |
b024b793 XZ |
537 | |
538 | }; | |
539 | ||
540 | static const int kvm_vti_max_exit_handlers = | |
541 | sizeof(kvm_vti_exit_handlers)/sizeof(*kvm_vti_exit_handlers); | |
542 | ||
b024b793 XZ |
543 | static uint32_t kvm_get_exit_reason(struct kvm_vcpu *vcpu) |
544 | { | |
545 | struct exit_ctl_data *p_exit_data; | |
546 | ||
547 | p_exit_data = kvm_get_exit_data(vcpu); | |
548 | return p_exit_data->exit_reason; | |
549 | } | |
550 | ||
551 | /* | |
552 | * The guest has exited. See if we can fix it or if we need userspace | |
553 | * assistance. | |
554 | */ | |
555 | static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) | |
556 | { | |
557 | u32 exit_reason = kvm_get_exit_reason(vcpu); | |
558 | vcpu->arch.last_exit = exit_reason; | |
559 | ||
560 | if (exit_reason < kvm_vti_max_exit_handlers | |
561 | && kvm_vti_exit_handlers[exit_reason]) | |
562 | return kvm_vti_exit_handlers[exit_reason](vcpu, kvm_run); | |
563 | else { | |
564 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
565 | kvm_run->hw.hardware_exit_reason = exit_reason; | |
566 | } | |
567 | return 0; | |
568 | } | |
569 | ||
570 | static inline void vti_set_rr6(unsigned long rr6) | |
571 | { | |
572 | ia64_set_rr(RR6, rr6); | |
573 | ia64_srlz_i(); | |
574 | } | |
575 | ||
576 | static int kvm_insert_vmm_mapping(struct kvm_vcpu *vcpu) | |
577 | { | |
578 | unsigned long pte; | |
579 | struct kvm *kvm = vcpu->kvm; | |
580 | int r; | |
581 | ||
582 | /*Insert a pair of tr to map vmm*/ | |
583 | pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL)); | |
584 | r = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT); | |
585 | if (r < 0) | |
586 | goto out; | |
587 | vcpu->arch.vmm_tr_slot = r; | |
588 | /*Insert a pairt of tr to map data of vm*/ | |
589 | pte = pte_val(mk_pte_phys(__pa(kvm->arch.vm_base), PAGE_KERNEL)); | |
590 | r = ia64_itr_entry(0x3, KVM_VM_DATA_BASE, | |
591 | pte, KVM_VM_DATA_SHIFT); | |
592 | if (r < 0) | |
593 | goto out; | |
594 | vcpu->arch.vm_tr_slot = r; | |
0c72ea7f JS |
595 | |
596 | #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC) | |
597 | if (kvm->arch.is_sn2) { | |
598 | r = kvm_sn2_setup_mappings(vcpu); | |
599 | if (r < 0) | |
600 | goto out; | |
601 | } | |
602 | #endif | |
603 | ||
b024b793 XZ |
604 | r = 0; |
605 | out: | |
606 | return r; | |
b024b793 XZ |
607 | } |
608 | ||
609 | static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu) | |
610 | { | |
0c72ea7f | 611 | struct kvm *kvm = vcpu->kvm; |
b024b793 XZ |
612 | ia64_ptr_entry(0x3, vcpu->arch.vmm_tr_slot); |
613 | ia64_ptr_entry(0x3, vcpu->arch.vm_tr_slot); | |
0c72ea7f JS |
614 | #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC) |
615 | if (kvm->arch.is_sn2) | |
616 | ia64_ptr_entry(0x3, vcpu->arch.sn_rtc_tr_slot); | |
617 | #endif | |
b024b793 XZ |
618 | } |
619 | ||
620 | static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu) | |
621 | { | |
622 | int cpu = smp_processor_id(); | |
623 | ||
624 | if (vcpu->arch.last_run_cpu != cpu || | |
625 | per_cpu(last_vcpu, cpu) != vcpu) { | |
626 | per_cpu(last_vcpu, cpu) = vcpu; | |
627 | vcpu->arch.last_run_cpu = cpu; | |
628 | kvm_flush_tlb_all(); | |
629 | } | |
630 | ||
631 | vcpu->arch.host_rr6 = ia64_get_rr(RR6); | |
632 | vti_set_rr6(vcpu->arch.vmm_rr); | |
633 | return kvm_insert_vmm_mapping(vcpu); | |
634 | } | |
635 | static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu) | |
636 | { | |
637 | kvm_purge_vmm_mapping(vcpu); | |
638 | vti_set_rr6(vcpu->arch.host_rr6); | |
639 | } | |
640 | ||
641 | static int vti_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
642 | { | |
643 | union context *host_ctx, *guest_ctx; | |
644 | int r; | |
645 | ||
646 | /*Get host and guest context with guest address space.*/ | |
647 | host_ctx = kvm_get_host_context(vcpu); | |
648 | guest_ctx = kvm_get_guest_context(vcpu); | |
649 | ||
650 | r = kvm_vcpu_pre_transition(vcpu); | |
651 | if (r < 0) | |
652 | goto out; | |
653 | kvm_vmm_info->tramp_entry(host_ctx, guest_ctx); | |
654 | kvm_vcpu_post_transition(vcpu); | |
655 | r = 0; | |
656 | out: | |
657 | return r; | |
658 | } | |
659 | ||
660 | static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
661 | { | |
662 | int r; | |
663 | ||
664 | again: | |
b024b793 | 665 | if (signal_pending(current)) { |
b024b793 XZ |
666 | r = -EINTR; |
667 | kvm_run->exit_reason = KVM_EXIT_INTR; | |
668 | goto out; | |
669 | } | |
670 | ||
d24d2c1c JS |
671 | /* |
672 | * down_read() may sleep and return with interrupts enabled | |
673 | */ | |
674 | down_read(&vcpu->kvm->slots_lock); | |
675 | ||
676 | preempt_disable(); | |
677 | local_irq_disable(); | |
678 | ||
b024b793 XZ |
679 | vcpu->guest_mode = 1; |
680 | kvm_guest_enter(); | |
b024b793 XZ |
681 | r = vti_vcpu_run(vcpu, kvm_run); |
682 | if (r < 0) { | |
683 | local_irq_enable(); | |
684 | preempt_enable(); | |
685 | kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY; | |
686 | goto out; | |
687 | } | |
688 | ||
689 | vcpu->arch.launched = 1; | |
690 | vcpu->guest_mode = 0; | |
691 | local_irq_enable(); | |
692 | ||
693 | /* | |
694 | * We must have an instruction between local_irq_enable() and | |
695 | * kvm_guest_exit(), so the timer interrupt isn't delayed by | |
696 | * the interrupt shadow. The stat.exits increment will do nicely. | |
697 | * But we need to prevent reordering, hence this barrier(): | |
698 | */ | |
699 | barrier(); | |
b024b793 | 700 | kvm_guest_exit(); |
decc9016 | 701 | up_read(&vcpu->kvm->slots_lock); |
b024b793 XZ |
702 | preempt_enable(); |
703 | ||
704 | r = kvm_handle_exit(kvm_run, vcpu); | |
705 | ||
706 | if (r > 0) { | |
707 | if (!need_resched()) | |
708 | goto again; | |
709 | } | |
710 | ||
711 | out: | |
712 | if (r > 0) { | |
713 | kvm_resched(vcpu); | |
714 | goto again; | |
715 | } | |
716 | ||
717 | return r; | |
718 | } | |
719 | ||
720 | static void kvm_set_mmio_data(struct kvm_vcpu *vcpu) | |
721 | { | |
722 | struct kvm_mmio_req *p = kvm_get_vcpu_ioreq(vcpu); | |
723 | ||
724 | if (!vcpu->mmio_is_write) | |
725 | memcpy(&p->data, vcpu->mmio_data, 8); | |
726 | p->state = STATE_IORESP_READY; | |
727 | } | |
728 | ||
729 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
730 | { | |
731 | int r; | |
732 | sigset_t sigsaved; | |
733 | ||
734 | vcpu_load(vcpu); | |
735 | ||
a2e4e289 XZ |
736 | if (vcpu->sigset_active) |
737 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
738 | ||
a4535290 | 739 | if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) { |
b024b793 | 740 | kvm_vcpu_block(vcpu); |
decc9016 | 741 | clear_bit(KVM_REQ_UNHALT, &vcpu->requests); |
a2e4e289 XZ |
742 | r = -EAGAIN; |
743 | goto out; | |
b024b793 XZ |
744 | } |
745 | ||
b024b793 XZ |
746 | if (vcpu->mmio_needed) { |
747 | memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8); | |
748 | kvm_set_mmio_data(vcpu); | |
749 | vcpu->mmio_read_completed = 1; | |
750 | vcpu->mmio_needed = 0; | |
751 | } | |
752 | r = __vcpu_run(vcpu, kvm_run); | |
a2e4e289 | 753 | out: |
b024b793 XZ |
754 | if (vcpu->sigset_active) |
755 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
756 | ||
757 | vcpu_put(vcpu); | |
758 | return r; | |
759 | } | |
760 | ||
b024b793 XZ |
761 | static struct kvm *kvm_alloc_kvm(void) |
762 | { | |
763 | ||
764 | struct kvm *kvm; | |
765 | uint64_t vm_base; | |
766 | ||
a917f7af XZ |
767 | BUG_ON(sizeof(struct kvm) > KVM_VM_STRUCT_SIZE); |
768 | ||
b024b793 XZ |
769 | vm_base = __get_free_pages(GFP_KERNEL, get_order(KVM_VM_DATA_SIZE)); |
770 | ||
771 | if (!vm_base) | |
772 | return ERR_PTR(-ENOMEM); | |
b024b793 | 773 | |
b024b793 | 774 | memset((void *)vm_base, 0, KVM_VM_DATA_SIZE); |
a917f7af XZ |
775 | kvm = (struct kvm *)(vm_base + |
776 | offsetof(struct kvm_vm_data, kvm_vm_struct)); | |
b024b793 | 777 | kvm->arch.vm_base = vm_base; |
a917f7af | 778 | printk(KERN_DEBUG"kvm: vm's data area:0x%lx\n", vm_base); |
b024b793 XZ |
779 | |
780 | return kvm; | |
781 | } | |
782 | ||
783 | struct kvm_io_range { | |
784 | unsigned long start; | |
785 | unsigned long size; | |
786 | unsigned long type; | |
787 | }; | |
788 | ||
789 | static const struct kvm_io_range io_ranges[] = { | |
790 | {VGA_IO_START, VGA_IO_SIZE, GPFN_FRAME_BUFFER}, | |
791 | {MMIO_START, MMIO_SIZE, GPFN_LOW_MMIO}, | |
792 | {LEGACY_IO_START, LEGACY_IO_SIZE, GPFN_LEGACY_IO}, | |
793 | {IO_SAPIC_START, IO_SAPIC_SIZE, GPFN_IOSAPIC}, | |
794 | {PIB_START, PIB_SIZE, GPFN_PIB}, | |
795 | }; | |
796 | ||
797 | static void kvm_build_io_pmt(struct kvm *kvm) | |
798 | { | |
799 | unsigned long i, j; | |
800 | ||
801 | /* Mark I/O ranges */ | |
802 | for (i = 0; i < (sizeof(io_ranges) / sizeof(struct kvm_io_range)); | |
803 | i++) { | |
804 | for (j = io_ranges[i].start; | |
805 | j < io_ranges[i].start + io_ranges[i].size; | |
806 | j += PAGE_SIZE) | |
807 | kvm_set_pmt_entry(kvm, j >> PAGE_SHIFT, | |
808 | io_ranges[i].type, 0); | |
809 | } | |
810 | ||
811 | } | |
812 | ||
813 | /*Use unused rids to virtualize guest rid.*/ | |
814 | #define GUEST_PHYSICAL_RR0 0x1739 | |
815 | #define GUEST_PHYSICAL_RR4 0x2739 | |
816 | #define VMM_INIT_RR 0x1660 | |
817 | ||
818 | static void kvm_init_vm(struct kvm *kvm) | |
819 | { | |
b024b793 XZ |
820 | BUG_ON(!kvm); |
821 | ||
822 | kvm->arch.metaphysical_rr0 = GUEST_PHYSICAL_RR0; | |
823 | kvm->arch.metaphysical_rr4 = GUEST_PHYSICAL_RR4; | |
824 | kvm->arch.vmm_init_rr = VMM_INIT_RR; | |
825 | ||
b024b793 XZ |
826 | /* |
827 | *Fill P2M entries for MMIO/IO ranges | |
828 | */ | |
829 | kvm_build_io_pmt(kvm); | |
830 | ||
2381ad24 | 831 | INIT_LIST_HEAD(&kvm->arch.assigned_dev_head); |
5550af4d SY |
832 | |
833 | /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */ | |
834 | set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap); | |
b024b793 XZ |
835 | } |
836 | ||
837 | struct kvm *kvm_arch_create_vm(void) | |
838 | { | |
839 | struct kvm *kvm = kvm_alloc_kvm(); | |
840 | ||
841 | if (IS_ERR(kvm)) | |
842 | return ERR_PTR(-ENOMEM); | |
0c72ea7f JS |
843 | |
844 | kvm->arch.is_sn2 = ia64_platform_is("sn2"); | |
845 | ||
b024b793 XZ |
846 | kvm_init_vm(kvm); |
847 | ||
934d534f JS |
848 | kvm->arch.online_vcpus = 0; |
849 | ||
b024b793 XZ |
850 | return kvm; |
851 | ||
852 | } | |
853 | ||
854 | static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm, | |
855 | struct kvm_irqchip *chip) | |
856 | { | |
857 | int r; | |
858 | ||
859 | r = 0; | |
860 | switch (chip->chip_id) { | |
861 | case KVM_IRQCHIP_IOAPIC: | |
862 | memcpy(&chip->chip.ioapic, ioapic_irqchip(kvm), | |
863 | sizeof(struct kvm_ioapic_state)); | |
864 | break; | |
865 | default: | |
866 | r = -EINVAL; | |
867 | break; | |
868 | } | |
869 | return r; | |
870 | } | |
871 | ||
872 | static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip) | |
873 | { | |
874 | int r; | |
875 | ||
876 | r = 0; | |
877 | switch (chip->chip_id) { | |
878 | case KVM_IRQCHIP_IOAPIC: | |
879 | memcpy(ioapic_irqchip(kvm), | |
880 | &chip->chip.ioapic, | |
881 | sizeof(struct kvm_ioapic_state)); | |
882 | break; | |
883 | default: | |
884 | r = -EINVAL; | |
885 | break; | |
886 | } | |
887 | return r; | |
888 | } | |
889 | ||
890 | #define RESTORE_REGS(_x) vcpu->arch._x = regs->_x | |
891 | ||
892 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) | |
893 | { | |
b024b793 | 894 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); |
042b26ed | 895 | int i; |
b024b793 XZ |
896 | |
897 | vcpu_load(vcpu); | |
898 | ||
899 | for (i = 0; i < 16; i++) { | |
900 | vpd->vgr[i] = regs->vpd.vgr[i]; | |
901 | vpd->vbgr[i] = regs->vpd.vbgr[i]; | |
902 | } | |
903 | for (i = 0; i < 128; i++) | |
904 | vpd->vcr[i] = regs->vpd.vcr[i]; | |
905 | vpd->vhpi = regs->vpd.vhpi; | |
906 | vpd->vnat = regs->vpd.vnat; | |
907 | vpd->vbnat = regs->vpd.vbnat; | |
908 | vpd->vpsr = regs->vpd.vpsr; | |
909 | ||
910 | vpd->vpr = regs->vpd.vpr; | |
911 | ||
042b26ed | 912 | memcpy(&vcpu->arch.guest, ®s->saved_guest, sizeof(union context)); |
b024b793 XZ |
913 | |
914 | RESTORE_REGS(mp_state); | |
915 | RESTORE_REGS(vmm_rr); | |
916 | memcpy(vcpu->arch.itrs, regs->itrs, sizeof(struct thash_data) * NITRS); | |
917 | memcpy(vcpu->arch.dtrs, regs->dtrs, sizeof(struct thash_data) * NDTRS); | |
918 | RESTORE_REGS(itr_regions); | |
919 | RESTORE_REGS(dtr_regions); | |
920 | RESTORE_REGS(tc_regions); | |
921 | RESTORE_REGS(irq_check); | |
922 | RESTORE_REGS(itc_check); | |
923 | RESTORE_REGS(timer_check); | |
924 | RESTORE_REGS(timer_pending); | |
925 | RESTORE_REGS(last_itc); | |
926 | for (i = 0; i < 8; i++) { | |
927 | vcpu->arch.vrr[i] = regs->vrr[i]; | |
928 | vcpu->arch.ibr[i] = regs->ibr[i]; | |
929 | vcpu->arch.dbr[i] = regs->dbr[i]; | |
930 | } | |
931 | for (i = 0; i < 4; i++) | |
932 | vcpu->arch.insvc[i] = regs->insvc[i]; | |
933 | RESTORE_REGS(xtp); | |
934 | RESTORE_REGS(metaphysical_rr0); | |
935 | RESTORE_REGS(metaphysical_rr4); | |
936 | RESTORE_REGS(metaphysical_saved_rr0); | |
937 | RESTORE_REGS(metaphysical_saved_rr4); | |
938 | RESTORE_REGS(fp_psr); | |
939 | RESTORE_REGS(saved_gp); | |
940 | ||
941 | vcpu->arch.irq_new_pending = 1; | |
c6c9fcdf | 942 | vcpu->arch.itc_offset = regs->saved_itc - kvm_get_itc(vcpu); |
b024b793 XZ |
943 | set_bit(KVM_REQ_RESUME, &vcpu->requests); |
944 | ||
945 | vcpu_put(vcpu); | |
042b26ed JS |
946 | |
947 | return 0; | |
b024b793 XZ |
948 | } |
949 | ||
950 | long kvm_arch_vm_ioctl(struct file *filp, | |
951 | unsigned int ioctl, unsigned long arg) | |
952 | { | |
953 | struct kvm *kvm = filp->private_data; | |
954 | void __user *argp = (void __user *)arg; | |
955 | int r = -EINVAL; | |
956 | ||
957 | switch (ioctl) { | |
958 | case KVM_SET_MEMORY_REGION: { | |
959 | struct kvm_memory_region kvm_mem; | |
960 | struct kvm_userspace_memory_region kvm_userspace_mem; | |
961 | ||
962 | r = -EFAULT; | |
963 | if (copy_from_user(&kvm_mem, argp, sizeof kvm_mem)) | |
964 | goto out; | |
965 | kvm_userspace_mem.slot = kvm_mem.slot; | |
966 | kvm_userspace_mem.flags = kvm_mem.flags; | |
967 | kvm_userspace_mem.guest_phys_addr = | |
968 | kvm_mem.guest_phys_addr; | |
969 | kvm_userspace_mem.memory_size = kvm_mem.memory_size; | |
970 | r = kvm_vm_ioctl_set_memory_region(kvm, | |
971 | &kvm_userspace_mem, 0); | |
972 | if (r) | |
973 | goto out; | |
974 | break; | |
975 | } | |
976 | case KVM_CREATE_IRQCHIP: | |
977 | r = -EFAULT; | |
978 | r = kvm_ioapic_init(kvm); | |
979 | if (r) | |
980 | goto out; | |
399ec807 AK |
981 | r = kvm_setup_default_irq_routing(kvm); |
982 | if (r) { | |
983 | kfree(kvm->arch.vioapic); | |
984 | goto out; | |
985 | } | |
b024b793 | 986 | break; |
4925663a | 987 | case KVM_IRQ_LINE_STATUS: |
b024b793 XZ |
988 | case KVM_IRQ_LINE: { |
989 | struct kvm_irq_level irq_event; | |
990 | ||
991 | r = -EFAULT; | |
992 | if (copy_from_user(&irq_event, argp, sizeof irq_event)) | |
993 | goto out; | |
994 | if (irqchip_in_kernel(kvm)) { | |
4925663a | 995 | __s32 status; |
b024b793 | 996 | mutex_lock(&kvm->lock); |
4925663a | 997 | status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, |
5550af4d | 998 | irq_event.irq, irq_event.level); |
b024b793 | 999 | mutex_unlock(&kvm->lock); |
4925663a GN |
1000 | if (ioctl == KVM_IRQ_LINE_STATUS) { |
1001 | irq_event.status = status; | |
1002 | if (copy_to_user(argp, &irq_event, | |
1003 | sizeof irq_event)) | |
1004 | goto out; | |
1005 | } | |
b024b793 XZ |
1006 | r = 0; |
1007 | } | |
1008 | break; | |
1009 | } | |
1010 | case KVM_GET_IRQCHIP: { | |
1011 | /* 0: PIC master, 1: PIC slave, 2: IOAPIC */ | |
1012 | struct kvm_irqchip chip; | |
1013 | ||
1014 | r = -EFAULT; | |
1015 | if (copy_from_user(&chip, argp, sizeof chip)) | |
1016 | goto out; | |
1017 | r = -ENXIO; | |
1018 | if (!irqchip_in_kernel(kvm)) | |
1019 | goto out; | |
1020 | r = kvm_vm_ioctl_get_irqchip(kvm, &chip); | |
1021 | if (r) | |
1022 | goto out; | |
1023 | r = -EFAULT; | |
1024 | if (copy_to_user(argp, &chip, sizeof chip)) | |
1025 | goto out; | |
1026 | r = 0; | |
1027 | break; | |
1028 | } | |
1029 | case KVM_SET_IRQCHIP: { | |
1030 | /* 0: PIC master, 1: PIC slave, 2: IOAPIC */ | |
1031 | struct kvm_irqchip chip; | |
1032 | ||
1033 | r = -EFAULT; | |
1034 | if (copy_from_user(&chip, argp, sizeof chip)) | |
1035 | goto out; | |
1036 | r = -ENXIO; | |
1037 | if (!irqchip_in_kernel(kvm)) | |
1038 | goto out; | |
1039 | r = kvm_vm_ioctl_set_irqchip(kvm, &chip); | |
1040 | if (r) | |
1041 | goto out; | |
1042 | r = 0; | |
1043 | break; | |
1044 | } | |
1045 | default: | |
1046 | ; | |
1047 | } | |
1048 | out: | |
1049 | return r; | |
1050 | } | |
1051 | ||
1052 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
1053 | struct kvm_sregs *sregs) | |
1054 | { | |
1055 | return -EINVAL; | |
1056 | } | |
1057 | ||
1058 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
1059 | struct kvm_sregs *sregs) | |
1060 | { | |
1061 | return -EINVAL; | |
1062 | ||
1063 | } | |
1064 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, | |
1065 | struct kvm_translation *tr) | |
1066 | { | |
1067 | ||
1068 | return -EINVAL; | |
1069 | } | |
1070 | ||
1071 | static int kvm_alloc_vmm_area(void) | |
1072 | { | |
1073 | if (!kvm_vmm_base && (kvm_vm_buffer_size < KVM_VM_BUFFER_SIZE)) { | |
1074 | kvm_vmm_base = __get_free_pages(GFP_KERNEL, | |
1075 | get_order(KVM_VMM_SIZE)); | |
1076 | if (!kvm_vmm_base) | |
1077 | return -ENOMEM; | |
1078 | ||
1079 | memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE); | |
1080 | kvm_vm_buffer = kvm_vmm_base + VMM_SIZE; | |
1081 | ||
1082 | printk(KERN_DEBUG"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n", | |
1083 | kvm_vmm_base, kvm_vm_buffer); | |
1084 | } | |
1085 | ||
1086 | return 0; | |
1087 | } | |
1088 | ||
1089 | static void kvm_free_vmm_area(void) | |
1090 | { | |
1091 | if (kvm_vmm_base) { | |
1092 | /*Zero this area before free to avoid bits leak!!*/ | |
1093 | memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE); | |
1094 | free_pages(kvm_vmm_base, get_order(KVM_VMM_SIZE)); | |
1095 | kvm_vmm_base = 0; | |
1096 | kvm_vm_buffer = 0; | |
1097 | kvm_vsa_base = 0; | |
1098 | } | |
1099 | } | |
1100 | ||
b024b793 XZ |
1101 | static void vti_vcpu_load(struct kvm_vcpu *vcpu, int cpu) |
1102 | { | |
1103 | } | |
1104 | ||
1105 | static int vti_init_vpd(struct kvm_vcpu *vcpu) | |
1106 | { | |
1107 | int i; | |
1108 | union cpuid3_t cpuid3; | |
1109 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); | |
1110 | ||
1111 | if (IS_ERR(vpd)) | |
1112 | return PTR_ERR(vpd); | |
1113 | ||
1114 | /* CPUID init */ | |
1115 | for (i = 0; i < 5; i++) | |
1116 | vpd->vcpuid[i] = ia64_get_cpuid(i); | |
1117 | ||
1118 | /* Limit the CPUID number to 5 */ | |
1119 | cpuid3.value = vpd->vcpuid[3]; | |
1120 | cpuid3.number = 4; /* 5 - 1 */ | |
1121 | vpd->vcpuid[3] = cpuid3.value; | |
1122 | ||
1123 | /*Set vac and vdc fields*/ | |
1124 | vpd->vac.a_from_int_cr = 1; | |
1125 | vpd->vac.a_to_int_cr = 1; | |
1126 | vpd->vac.a_from_psr = 1; | |
1127 | vpd->vac.a_from_cpuid = 1; | |
1128 | vpd->vac.a_cover = 1; | |
1129 | vpd->vac.a_bsw = 1; | |
1130 | vpd->vac.a_int = 1; | |
1131 | vpd->vdc.d_vmsw = 1; | |
1132 | ||
1133 | /*Set virtual buffer*/ | |
1134 | vpd->virt_env_vaddr = KVM_VM_BUFFER_BASE; | |
1135 | ||
1136 | return 0; | |
1137 | } | |
1138 | ||
1139 | static int vti_create_vp(struct kvm_vcpu *vcpu) | |
1140 | { | |
1141 | long ret; | |
1142 | struct vpd *vpd = vcpu->arch.vpd; | |
1143 | unsigned long vmm_ivt; | |
1144 | ||
1145 | vmm_ivt = kvm_vmm_info->vmm_ivt; | |
1146 | ||
1147 | printk(KERN_DEBUG "kvm: vcpu:%p,ivt: 0x%lx\n", vcpu, vmm_ivt); | |
1148 | ||
1149 | ret = ia64_pal_vp_create((u64 *)vpd, (u64 *)vmm_ivt, 0); | |
1150 | ||
1151 | if (ret) { | |
1152 | printk(KERN_ERR"kvm: ia64_pal_vp_create failed!\n"); | |
1153 | return -EINVAL; | |
1154 | } | |
1155 | return 0; | |
1156 | } | |
1157 | ||
1158 | static void init_ptce_info(struct kvm_vcpu *vcpu) | |
1159 | { | |
1160 | ia64_ptce_info_t ptce = {0}; | |
1161 | ||
1162 | ia64_get_ptce(&ptce); | |
1163 | vcpu->arch.ptce_base = ptce.base; | |
1164 | vcpu->arch.ptce_count[0] = ptce.count[0]; | |
1165 | vcpu->arch.ptce_count[1] = ptce.count[1]; | |
1166 | vcpu->arch.ptce_stride[0] = ptce.stride[0]; | |
1167 | vcpu->arch.ptce_stride[1] = ptce.stride[1]; | |
1168 | } | |
1169 | ||
1170 | static void kvm_migrate_hlt_timer(struct kvm_vcpu *vcpu) | |
1171 | { | |
1172 | struct hrtimer *p_ht = &vcpu->arch.hlt_timer; | |
1173 | ||
1174 | if (hrtimer_cancel(p_ht)) | |
18dd36af | 1175 | hrtimer_start_expires(p_ht, HRTIMER_MODE_ABS); |
b024b793 XZ |
1176 | } |
1177 | ||
1178 | static enum hrtimer_restart hlt_timer_fn(struct hrtimer *data) | |
1179 | { | |
1180 | struct kvm_vcpu *vcpu; | |
1181 | wait_queue_head_t *q; | |
1182 | ||
1183 | vcpu = container_of(data, struct kvm_vcpu, arch.hlt_timer); | |
decc9016 XZ |
1184 | q = &vcpu->wq; |
1185 | ||
a4535290 | 1186 | if (vcpu->arch.mp_state != KVM_MP_STATE_HALTED) |
b024b793 XZ |
1187 | goto out; |
1188 | ||
decc9016 | 1189 | if (waitqueue_active(q)) |
b024b793 | 1190 | wake_up_interruptible(q); |
decc9016 | 1191 | |
b024b793 | 1192 | out: |
decc9016 | 1193 | vcpu->arch.timer_fired = 1; |
b024b793 XZ |
1194 | vcpu->arch.timer_check = 1; |
1195 | return HRTIMER_NORESTART; | |
1196 | } | |
1197 | ||
1198 | #define PALE_RESET_ENTRY 0x80000000ffffffb0UL | |
1199 | ||
1200 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) | |
1201 | { | |
1202 | struct kvm_vcpu *v; | |
1203 | int r; | |
1204 | int i; | |
1205 | long itc_offset; | |
1206 | struct kvm *kvm = vcpu->kvm; | |
1207 | struct kvm_pt_regs *regs = vcpu_regs(vcpu); | |
1208 | ||
1209 | union context *p_ctx = &vcpu->arch.guest; | |
1210 | struct kvm_vcpu *vmm_vcpu = to_guest(vcpu->kvm, vcpu); | |
1211 | ||
1212 | /*Init vcpu context for first run.*/ | |
1213 | if (IS_ERR(vmm_vcpu)) | |
1214 | return PTR_ERR(vmm_vcpu); | |
1215 | ||
1216 | if (vcpu->vcpu_id == 0) { | |
a4535290 | 1217 | vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; |
b024b793 XZ |
1218 | |
1219 | /*Set entry address for first run.*/ | |
1220 | regs->cr_iip = PALE_RESET_ENTRY; | |
1221 | ||
a917f7af | 1222 | /*Initialize itc offset for vcpus*/ |
c6c9fcdf | 1223 | itc_offset = 0UL - kvm_get_itc(vcpu); |
934d534f | 1224 | for (i = 0; i < kvm->arch.online_vcpus; i++) { |
a917f7af XZ |
1225 | v = (struct kvm_vcpu *)((char *)vcpu + |
1226 | sizeof(struct kvm_vcpu_data) * i); | |
b024b793 XZ |
1227 | v->arch.itc_offset = itc_offset; |
1228 | v->arch.last_itc = 0; | |
1229 | } | |
1230 | } else | |
a4535290 | 1231 | vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED; |
b024b793 XZ |
1232 | |
1233 | r = -ENOMEM; | |
1234 | vcpu->arch.apic = kzalloc(sizeof(struct kvm_lapic), GFP_KERNEL); | |
1235 | if (!vcpu->arch.apic) | |
1236 | goto out; | |
1237 | vcpu->arch.apic->vcpu = vcpu; | |
1238 | ||
1239 | p_ctx->gr[1] = 0; | |
a917f7af | 1240 | p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + KVM_STK_OFFSET); |
b024b793 XZ |
1241 | p_ctx->gr[13] = (unsigned long)vmm_vcpu; |
1242 | p_ctx->psr = 0x1008522000UL; | |
1243 | p_ctx->ar[40] = FPSR_DEFAULT; /*fpsr*/ | |
1244 | p_ctx->caller_unat = 0; | |
1245 | p_ctx->pr = 0x0; | |
1246 | p_ctx->ar[36] = 0x0; /*unat*/ | |
1247 | p_ctx->ar[19] = 0x0; /*rnat*/ | |
1248 | p_ctx->ar[18] = (unsigned long)vmm_vcpu + | |
1249 | ((sizeof(struct kvm_vcpu)+15) & ~15); | |
1250 | p_ctx->ar[64] = 0x0; /*pfs*/ | |
1251 | p_ctx->cr[0] = 0x7e04UL; | |
1252 | p_ctx->cr[2] = (unsigned long)kvm_vmm_info->vmm_ivt; | |
1253 | p_ctx->cr[8] = 0x3c; | |
1254 | ||
1255 | /*Initilize region register*/ | |
1256 | p_ctx->rr[0] = 0x30; | |
1257 | p_ctx->rr[1] = 0x30; | |
1258 | p_ctx->rr[2] = 0x30; | |
1259 | p_ctx->rr[3] = 0x30; | |
1260 | p_ctx->rr[4] = 0x30; | |
1261 | p_ctx->rr[5] = 0x30; | |
1262 | p_ctx->rr[7] = 0x30; | |
1263 | ||
1264 | /*Initilize branch register 0*/ | |
1265 | p_ctx->br[0] = *(unsigned long *)kvm_vmm_info->vmm_entry; | |
1266 | ||
1267 | vcpu->arch.vmm_rr = kvm->arch.vmm_init_rr; | |
1268 | vcpu->arch.metaphysical_rr0 = kvm->arch.metaphysical_rr0; | |
1269 | vcpu->arch.metaphysical_rr4 = kvm->arch.metaphysical_rr4; | |
1270 | ||
1271 | hrtimer_init(&vcpu->arch.hlt_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
1272 | vcpu->arch.hlt_timer.function = hlt_timer_fn; | |
1273 | ||
1274 | vcpu->arch.last_run_cpu = -1; | |
a917f7af | 1275 | vcpu->arch.vpd = (struct vpd *)VPD_BASE(vcpu->vcpu_id); |
b024b793 XZ |
1276 | vcpu->arch.vsa_base = kvm_vsa_base; |
1277 | vcpu->arch.__gp = kvm_vmm_gp; | |
1278 | vcpu->arch.dirty_log_lock_pa = __pa(&kvm->arch.dirty_log_lock); | |
a917f7af XZ |
1279 | vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_BASE(vcpu->vcpu_id); |
1280 | vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_BASE(vcpu->vcpu_id); | |
b024b793 XZ |
1281 | init_ptce_info(vcpu); |
1282 | ||
1283 | r = 0; | |
1284 | out: | |
1285 | return r; | |
1286 | } | |
1287 | ||
1288 | static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id) | |
1289 | { | |
1290 | unsigned long psr; | |
1291 | int r; | |
1292 | ||
1293 | local_irq_save(psr); | |
1294 | r = kvm_insert_vmm_mapping(vcpu); | |
1295 | if (r) | |
1296 | goto fail; | |
1297 | r = kvm_vcpu_init(vcpu, vcpu->kvm, id); | |
1298 | if (r) | |
1299 | goto fail; | |
1300 | ||
1301 | r = vti_init_vpd(vcpu); | |
1302 | if (r) { | |
1303 | printk(KERN_DEBUG"kvm: vpd init error!!\n"); | |
1304 | goto uninit; | |
1305 | } | |
1306 | ||
1307 | r = vti_create_vp(vcpu); | |
1308 | if (r) | |
1309 | goto uninit; | |
1310 | ||
1311 | kvm_purge_vmm_mapping(vcpu); | |
1312 | local_irq_restore(psr); | |
1313 | ||
1314 | return 0; | |
1315 | uninit: | |
1316 | kvm_vcpu_uninit(vcpu); | |
1317 | fail: | |
cab7a1ee | 1318 | local_irq_restore(psr); |
b024b793 XZ |
1319 | return r; |
1320 | } | |
1321 | ||
1322 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, | |
1323 | unsigned int id) | |
1324 | { | |
1325 | struct kvm_vcpu *vcpu; | |
1326 | unsigned long vm_base = kvm->arch.vm_base; | |
1327 | int r; | |
1328 | int cpu; | |
1329 | ||
a917f7af XZ |
1330 | BUG_ON(sizeof(struct kvm_vcpu) > VCPU_STRUCT_SIZE/2); |
1331 | ||
1332 | r = -EINVAL; | |
1333 | if (id >= KVM_MAX_VCPUS) { | |
1334 | printk(KERN_ERR"kvm: Can't configure vcpus > %ld", | |
1335 | KVM_MAX_VCPUS); | |
1336 | goto fail; | |
1337 | } | |
1338 | ||
b024b793 XZ |
1339 | r = -ENOMEM; |
1340 | if (!vm_base) { | |
1341 | printk(KERN_ERR"kvm: Create vcpu[%d] error!\n", id); | |
1342 | goto fail; | |
1343 | } | |
a917f7af XZ |
1344 | vcpu = (struct kvm_vcpu *)(vm_base + offsetof(struct kvm_vm_data, |
1345 | vcpu_data[id].vcpu_struct)); | |
b024b793 XZ |
1346 | vcpu->kvm = kvm; |
1347 | ||
1348 | cpu = get_cpu(); | |
1349 | vti_vcpu_load(vcpu, cpu); | |
1350 | r = vti_vcpu_setup(vcpu, id); | |
1351 | put_cpu(); | |
1352 | ||
1353 | if (r) { | |
1354 | printk(KERN_DEBUG"kvm: vcpu_setup error!!\n"); | |
1355 | goto fail; | |
1356 | } | |
1357 | ||
934d534f JS |
1358 | kvm->arch.online_vcpus++; |
1359 | ||
b024b793 XZ |
1360 | return vcpu; |
1361 | fail: | |
1362 | return ERR_PTR(r); | |
1363 | } | |
1364 | ||
1365 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) | |
1366 | { | |
1367 | return 0; | |
1368 | } | |
1369 | ||
1370 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) | |
1371 | { | |
1372 | return -EINVAL; | |
1373 | } | |
1374 | ||
1375 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) | |
1376 | { | |
1377 | return -EINVAL; | |
1378 | } | |
1379 | ||
d0bfb940 JK |
1380 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
1381 | struct kvm_guest_debug *dbg) | |
b024b793 XZ |
1382 | { |
1383 | return -EINVAL; | |
1384 | } | |
1385 | ||
1386 | static void free_kvm(struct kvm *kvm) | |
1387 | { | |
1388 | unsigned long vm_base = kvm->arch.vm_base; | |
1389 | ||
1390 | if (vm_base) { | |
1391 | memset((void *)vm_base, 0, KVM_VM_DATA_SIZE); | |
1392 | free_pages(vm_base, get_order(KVM_VM_DATA_SIZE)); | |
1393 | } | |
1394 | ||
1395 | } | |
1396 | ||
1397 | static void kvm_release_vm_pages(struct kvm *kvm) | |
1398 | { | |
1399 | struct kvm_memory_slot *memslot; | |
1400 | int i, j; | |
1401 | unsigned long base_gfn; | |
1402 | ||
1403 | for (i = 0; i < kvm->nmemslots; i++) { | |
1404 | memslot = &kvm->memslots[i]; | |
1405 | base_gfn = memslot->base_gfn; | |
1406 | ||
1407 | for (j = 0; j < memslot->npages; j++) { | |
1408 | if (memslot->rmap[j]) | |
1409 | put_page((struct page *)memslot->rmap[j]); | |
1410 | } | |
1411 | } | |
1412 | } | |
1413 | ||
ad8ba2cd SY |
1414 | void kvm_arch_sync_events(struct kvm *kvm) |
1415 | { | |
1416 | } | |
1417 | ||
b024b793 XZ |
1418 | void kvm_arch_destroy_vm(struct kvm *kvm) |
1419 | { | |
2381ad24 XZ |
1420 | kvm_iommu_unmap_guest(kvm); |
1421 | #ifdef KVM_CAP_DEVICE_ASSIGNMENT | |
1422 | kvm_free_all_assigned_devices(kvm); | |
1423 | #endif | |
b024b793 XZ |
1424 | kfree(kvm->arch.vioapic); |
1425 | kvm_release_vm_pages(kvm); | |
1426 | kvm_free_physmem(kvm); | |
1427 | free_kvm(kvm); | |
1428 | } | |
1429 | ||
1430 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
1431 | { | |
1432 | } | |
1433 | ||
1434 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
1435 | { | |
1436 | if (cpu != vcpu->cpu) { | |
1437 | vcpu->cpu = cpu; | |
1438 | if (vcpu->arch.ht_active) | |
1439 | kvm_migrate_hlt_timer(vcpu); | |
1440 | } | |
1441 | } | |
1442 | ||
1443 | #define SAVE_REGS(_x) regs->_x = vcpu->arch._x | |
1444 | ||
1445 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) | |
1446 | { | |
b024b793 | 1447 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); |
042b26ed JS |
1448 | int i; |
1449 | ||
b024b793 XZ |
1450 | vcpu_load(vcpu); |
1451 | ||
1452 | for (i = 0; i < 16; i++) { | |
1453 | regs->vpd.vgr[i] = vpd->vgr[i]; | |
1454 | regs->vpd.vbgr[i] = vpd->vbgr[i]; | |
1455 | } | |
1456 | for (i = 0; i < 128; i++) | |
1457 | regs->vpd.vcr[i] = vpd->vcr[i]; | |
1458 | regs->vpd.vhpi = vpd->vhpi; | |
1459 | regs->vpd.vnat = vpd->vnat; | |
1460 | regs->vpd.vbnat = vpd->vbnat; | |
1461 | regs->vpd.vpsr = vpd->vpsr; | |
1462 | regs->vpd.vpr = vpd->vpr; | |
1463 | ||
042b26ed JS |
1464 | memcpy(®s->saved_guest, &vcpu->arch.guest, sizeof(union context)); |
1465 | ||
b024b793 XZ |
1466 | SAVE_REGS(mp_state); |
1467 | SAVE_REGS(vmm_rr); | |
1468 | memcpy(regs->itrs, vcpu->arch.itrs, sizeof(struct thash_data) * NITRS); | |
1469 | memcpy(regs->dtrs, vcpu->arch.dtrs, sizeof(struct thash_data) * NDTRS); | |
1470 | SAVE_REGS(itr_regions); | |
1471 | SAVE_REGS(dtr_regions); | |
1472 | SAVE_REGS(tc_regions); | |
1473 | SAVE_REGS(irq_check); | |
1474 | SAVE_REGS(itc_check); | |
1475 | SAVE_REGS(timer_check); | |
1476 | SAVE_REGS(timer_pending); | |
1477 | SAVE_REGS(last_itc); | |
1478 | for (i = 0; i < 8; i++) { | |
1479 | regs->vrr[i] = vcpu->arch.vrr[i]; | |
1480 | regs->ibr[i] = vcpu->arch.ibr[i]; | |
1481 | regs->dbr[i] = vcpu->arch.dbr[i]; | |
1482 | } | |
1483 | for (i = 0; i < 4; i++) | |
1484 | regs->insvc[i] = vcpu->arch.insvc[i]; | |
c6c9fcdf | 1485 | regs->saved_itc = vcpu->arch.itc_offset + kvm_get_itc(vcpu); |
b024b793 XZ |
1486 | SAVE_REGS(xtp); |
1487 | SAVE_REGS(metaphysical_rr0); | |
1488 | SAVE_REGS(metaphysical_rr4); | |
1489 | SAVE_REGS(metaphysical_saved_rr0); | |
1490 | SAVE_REGS(metaphysical_saved_rr4); | |
1491 | SAVE_REGS(fp_psr); | |
1492 | SAVE_REGS(saved_gp); | |
042b26ed | 1493 | |
b024b793 | 1494 | vcpu_put(vcpu); |
042b26ed | 1495 | return 0; |
b024b793 XZ |
1496 | } |
1497 | ||
e9a999fe JS |
1498 | int kvm_arch_vcpu_ioctl_get_stack(struct kvm_vcpu *vcpu, |
1499 | struct kvm_ia64_vcpu_stack *stack) | |
1500 | { | |
1501 | memcpy(stack, vcpu, sizeof(struct kvm_ia64_vcpu_stack)); | |
1502 | return 0; | |
1503 | } | |
1504 | ||
1505 | int kvm_arch_vcpu_ioctl_set_stack(struct kvm_vcpu *vcpu, | |
1506 | struct kvm_ia64_vcpu_stack *stack) | |
1507 | { | |
1508 | memcpy(vcpu + 1, &stack->stack[0] + sizeof(struct kvm_vcpu), | |
1509 | sizeof(struct kvm_ia64_vcpu_stack) - sizeof(struct kvm_vcpu)); | |
1510 | ||
1511 | vcpu->arch.exit_data = ((struct kvm_vcpu *)stack)->arch.exit_data; | |
1512 | return 0; | |
1513 | } | |
1514 | ||
b024b793 XZ |
1515 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) |
1516 | { | |
1517 | ||
1518 | hrtimer_cancel(&vcpu->arch.hlt_timer); | |
1519 | kfree(vcpu->arch.apic); | |
1520 | } | |
1521 | ||
1522 | ||
1523 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
e9a999fe | 1524 | unsigned int ioctl, unsigned long arg) |
b024b793 | 1525 | { |
e9a999fe JS |
1526 | struct kvm_vcpu *vcpu = filp->private_data; |
1527 | void __user *argp = (void __user *)arg; | |
1528 | struct kvm_ia64_vcpu_stack *stack = NULL; | |
1529 | long r; | |
1530 | ||
1531 | switch (ioctl) { | |
1532 | case KVM_IA64_VCPU_GET_STACK: { | |
1533 | struct kvm_ia64_vcpu_stack __user *user_stack; | |
1534 | void __user *first_p = argp; | |
1535 | ||
1536 | r = -EFAULT; | |
1537 | if (copy_from_user(&user_stack, first_p, sizeof(void *))) | |
1538 | goto out; | |
1539 | ||
1540 | if (!access_ok(VERIFY_WRITE, user_stack, | |
1541 | sizeof(struct kvm_ia64_vcpu_stack))) { | |
1542 | printk(KERN_INFO "KVM_IA64_VCPU_GET_STACK: " | |
1543 | "Illegal user destination address for stack\n"); | |
1544 | goto out; | |
1545 | } | |
1546 | stack = kzalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL); | |
1547 | if (!stack) { | |
1548 | r = -ENOMEM; | |
1549 | goto out; | |
1550 | } | |
1551 | ||
1552 | r = kvm_arch_vcpu_ioctl_get_stack(vcpu, stack); | |
1553 | if (r) | |
1554 | goto out; | |
1555 | ||
1556 | if (copy_to_user(user_stack, stack, | |
1557 | sizeof(struct kvm_ia64_vcpu_stack))) | |
1558 | goto out; | |
1559 | ||
1560 | break; | |
1561 | } | |
1562 | case KVM_IA64_VCPU_SET_STACK: { | |
1563 | struct kvm_ia64_vcpu_stack __user *user_stack; | |
1564 | void __user *first_p = argp; | |
1565 | ||
1566 | r = -EFAULT; | |
1567 | if (copy_from_user(&user_stack, first_p, sizeof(void *))) | |
1568 | goto out; | |
1569 | ||
1570 | if (!access_ok(VERIFY_READ, user_stack, | |
1571 | sizeof(struct kvm_ia64_vcpu_stack))) { | |
1572 | printk(KERN_INFO "KVM_IA64_VCPU_SET_STACK: " | |
1573 | "Illegal user address for stack\n"); | |
1574 | goto out; | |
1575 | } | |
1576 | stack = kmalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL); | |
1577 | if (!stack) { | |
1578 | r = -ENOMEM; | |
1579 | goto out; | |
1580 | } | |
1581 | if (copy_from_user(stack, user_stack, | |
1582 | sizeof(struct kvm_ia64_vcpu_stack))) | |
1583 | goto out; | |
1584 | ||
1585 | r = kvm_arch_vcpu_ioctl_set_stack(vcpu, stack); | |
1586 | break; | |
1587 | } | |
1588 | ||
1589 | default: | |
1590 | r = -EINVAL; | |
1591 | } | |
1592 | ||
1593 | out: | |
1594 | kfree(stack); | |
1595 | return r; | |
b024b793 XZ |
1596 | } |
1597 | ||
1598 | int kvm_arch_set_memory_region(struct kvm *kvm, | |
1599 | struct kvm_userspace_memory_region *mem, | |
1600 | struct kvm_memory_slot old, | |
1601 | int user_alloc) | |
1602 | { | |
1603 | unsigned long i; | |
1cbea809 | 1604 | unsigned long pfn; |
b024b793 XZ |
1605 | int npages = mem->memory_size >> PAGE_SHIFT; |
1606 | struct kvm_memory_slot *memslot = &kvm->memslots[mem->slot]; | |
1607 | unsigned long base_gfn = memslot->base_gfn; | |
1608 | ||
a917f7af XZ |
1609 | if (base_gfn + npages > (KVM_MAX_MEM_SIZE >> PAGE_SHIFT)) |
1610 | return -ENOMEM; | |
1611 | ||
b024b793 | 1612 | for (i = 0; i < npages; i++) { |
1cbea809 XZ |
1613 | pfn = gfn_to_pfn(kvm, base_gfn + i); |
1614 | if (!kvm_is_mmio_pfn(pfn)) { | |
1615 | kvm_set_pmt_entry(kvm, base_gfn + i, | |
1616 | pfn << PAGE_SHIFT, | |
b010eb51 | 1617 | _PAGE_AR_RWX | _PAGE_MA_WB); |
1cbea809 XZ |
1618 | memslot->rmap[i] = (unsigned long)pfn_to_page(pfn); |
1619 | } else { | |
1620 | kvm_set_pmt_entry(kvm, base_gfn + i, | |
b010eb51 | 1621 | GPFN_PHYS_MMIO | (pfn << PAGE_SHIFT), |
1cbea809 XZ |
1622 | _PAGE_MA_UC); |
1623 | memslot->rmap[i] = 0; | |
1624 | } | |
b024b793 XZ |
1625 | } |
1626 | ||
1627 | return 0; | |
1628 | } | |
1629 | ||
34d4cb8f MT |
1630 | void kvm_arch_flush_shadow(struct kvm *kvm) |
1631 | { | |
1632 | } | |
b024b793 XZ |
1633 | |
1634 | long kvm_arch_dev_ioctl(struct file *filp, | |
e9a999fe | 1635 | unsigned int ioctl, unsigned long arg) |
b024b793 XZ |
1636 | { |
1637 | return -EINVAL; | |
1638 | } | |
1639 | ||
1640 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
1641 | { | |
1642 | kvm_vcpu_uninit(vcpu); | |
1643 | } | |
1644 | ||
1645 | static int vti_cpu_has_kvm_support(void) | |
1646 | { | |
1647 | long avail = 1, status = 1, control = 1; | |
1648 | long ret; | |
1649 | ||
1650 | ret = ia64_pal_proc_get_features(&avail, &status, &control, 0); | |
1651 | if (ret) | |
1652 | goto out; | |
1653 | ||
1654 | if (!(avail & PAL_PROC_VM_BIT)) | |
1655 | goto out; | |
1656 | ||
1657 | printk(KERN_DEBUG"kvm: Hardware Supports VT\n"); | |
1658 | ||
1659 | ret = ia64_pal_vp_env_info(&kvm_vm_buffer_size, &vp_env_info); | |
1660 | if (ret) | |
1661 | goto out; | |
1662 | printk(KERN_DEBUG"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size); | |
1663 | ||
1664 | if (!(vp_env_info & VP_OPCODE)) { | |
1665 | printk(KERN_WARNING"kvm: No opcode ability on hardware, " | |
1666 | "vm_env_info:0x%lx\n", vp_env_info); | |
1667 | } | |
1668 | ||
1669 | return 1; | |
1670 | out: | |
1671 | return 0; | |
1672 | } | |
1673 | ||
0b5d7a2c JS |
1674 | |
1675 | /* | |
1676 | * On SN2, the ITC isn't stable, so copy in fast path code to use the | |
1677 | * SN2 RTC, replacing the ITC based default verion. | |
1678 | */ | |
1679 | static void kvm_patch_vmm(struct kvm_vmm_info *vmm_info, | |
1680 | struct module *module) | |
1681 | { | |
1682 | unsigned long new_ar, new_ar_sn2; | |
1683 | unsigned long module_base; | |
1684 | ||
1685 | if (!ia64_platform_is("sn2")) | |
1686 | return; | |
1687 | ||
1688 | module_base = (unsigned long)module->module_core; | |
1689 | ||
1690 | new_ar = kvm_vmm_base + vmm_info->patch_mov_ar - module_base; | |
1691 | new_ar_sn2 = kvm_vmm_base + vmm_info->patch_mov_ar_sn2 - module_base; | |
1692 | ||
1693 | printk(KERN_INFO "kvm: Patching ITC emulation to use SGI SN2 RTC " | |
1694 | "as source\n"); | |
1695 | ||
1696 | /* | |
1697 | * Copy the SN2 version of mov_ar into place. They are both | |
1698 | * the same size, so 6 bundles is sufficient (6 * 0x10). | |
1699 | */ | |
1700 | memcpy((void *)new_ar, (void *)new_ar_sn2, 0x60); | |
1701 | } | |
1702 | ||
b024b793 | 1703 | static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info, |
0b5d7a2c | 1704 | struct module *module) |
b024b793 XZ |
1705 | { |
1706 | unsigned long module_base; | |
1707 | unsigned long vmm_size; | |
1708 | ||
1709 | unsigned long vmm_offset, func_offset, fdesc_offset; | |
1710 | struct fdesc *p_fdesc; | |
1711 | ||
1712 | BUG_ON(!module); | |
1713 | ||
1714 | if (!kvm_vmm_base) { | |
1715 | printk("kvm: kvm area hasn't been initilized yet!!\n"); | |
1716 | return -EFAULT; | |
1717 | } | |
1718 | ||
1719 | /*Calculate new position of relocated vmm module.*/ | |
1720 | module_base = (unsigned long)module->module_core; | |
1721 | vmm_size = module->core_size; | |
1722 | if (unlikely(vmm_size > KVM_VMM_SIZE)) | |
1723 | return -EFAULT; | |
1724 | ||
1725 | memcpy((void *)kvm_vmm_base, (void *)module_base, vmm_size); | |
0b5d7a2c | 1726 | kvm_patch_vmm(vmm_info, module); |
b024b793 XZ |
1727 | kvm_flush_icache(kvm_vmm_base, vmm_size); |
1728 | ||
1729 | /*Recalculate kvm_vmm_info based on new VMM*/ | |
1730 | vmm_offset = vmm_info->vmm_ivt - module_base; | |
1731 | kvm_vmm_info->vmm_ivt = KVM_VMM_BASE + vmm_offset; | |
1732 | printk(KERN_DEBUG"kvm: Relocated VMM's IVT Base Addr:%lx\n", | |
1733 | kvm_vmm_info->vmm_ivt); | |
1734 | ||
1735 | fdesc_offset = (unsigned long)vmm_info->vmm_entry - module_base; | |
1736 | kvm_vmm_info->vmm_entry = (kvm_vmm_entry *)(KVM_VMM_BASE + | |
1737 | fdesc_offset); | |
1738 | func_offset = *(unsigned long *)vmm_info->vmm_entry - module_base; | |
1739 | p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset); | |
1740 | p_fdesc->ip = KVM_VMM_BASE + func_offset; | |
1741 | p_fdesc->gp = KVM_VMM_BASE+(p_fdesc->gp - module_base); | |
1742 | ||
1743 | printk(KERN_DEBUG"kvm: Relocated VMM's Init Entry Addr:%lx\n", | |
1744 | KVM_VMM_BASE+func_offset); | |
1745 | ||
1746 | fdesc_offset = (unsigned long)vmm_info->tramp_entry - module_base; | |
1747 | kvm_vmm_info->tramp_entry = (kvm_tramp_entry *)(KVM_VMM_BASE + | |
1748 | fdesc_offset); | |
1749 | func_offset = *(unsigned long *)vmm_info->tramp_entry - module_base; | |
1750 | p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset); | |
1751 | p_fdesc->ip = KVM_VMM_BASE + func_offset; | |
1752 | p_fdesc->gp = KVM_VMM_BASE + (p_fdesc->gp - module_base); | |
1753 | ||
1754 | kvm_vmm_gp = p_fdesc->gp; | |
1755 | ||
1756 | printk(KERN_DEBUG"kvm: Relocated VMM's Entry IP:%p\n", | |
1757 | kvm_vmm_info->vmm_entry); | |
1758 | printk(KERN_DEBUG"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n", | |
1759 | KVM_VMM_BASE + func_offset); | |
1760 | ||
1761 | return 0; | |
1762 | } | |
1763 | ||
1764 | int kvm_arch_init(void *opaque) | |
1765 | { | |
1766 | int r; | |
1767 | struct kvm_vmm_info *vmm_info = (struct kvm_vmm_info *)opaque; | |
1768 | ||
1769 | if (!vti_cpu_has_kvm_support()) { | |
1770 | printk(KERN_ERR "kvm: No Hardware Virtualization Support!\n"); | |
1771 | r = -EOPNOTSUPP; | |
1772 | goto out; | |
1773 | } | |
1774 | ||
1775 | if (kvm_vmm_info) { | |
1776 | printk(KERN_ERR "kvm: Already loaded VMM module!\n"); | |
1777 | r = -EEXIST; | |
1778 | goto out; | |
1779 | } | |
1780 | ||
1781 | r = -ENOMEM; | |
1782 | kvm_vmm_info = kzalloc(sizeof(struct kvm_vmm_info), GFP_KERNEL); | |
1783 | if (!kvm_vmm_info) | |
1784 | goto out; | |
1785 | ||
1786 | if (kvm_alloc_vmm_area()) | |
1787 | goto out_free0; | |
1788 | ||
1789 | r = kvm_relocate_vmm(vmm_info, vmm_info->module); | |
1790 | if (r) | |
1791 | goto out_free1; | |
1792 | ||
1793 | return 0; | |
1794 | ||
1795 | out_free1: | |
1796 | kvm_free_vmm_area(); | |
1797 | out_free0: | |
1798 | kfree(kvm_vmm_info); | |
1799 | out: | |
1800 | return r; | |
1801 | } | |
1802 | ||
1803 | void kvm_arch_exit(void) | |
1804 | { | |
1805 | kvm_free_vmm_area(); | |
1806 | kfree(kvm_vmm_info); | |
1807 | kvm_vmm_info = NULL; | |
1808 | } | |
1809 | ||
1810 | static int kvm_ia64_sync_dirty_log(struct kvm *kvm, | |
1811 | struct kvm_dirty_log *log) | |
1812 | { | |
1813 | struct kvm_memory_slot *memslot; | |
1814 | int r, i; | |
1815 | long n, base; | |
a917f7af XZ |
1816 | unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base + |
1817 | offsetof(struct kvm_vm_data, kvm_mem_dirty_log)); | |
b024b793 XZ |
1818 | |
1819 | r = -EINVAL; | |
1820 | if (log->slot >= KVM_MEMORY_SLOTS) | |
1821 | goto out; | |
1822 | ||
1823 | memslot = &kvm->memslots[log->slot]; | |
1824 | r = -ENOENT; | |
1825 | if (!memslot->dirty_bitmap) | |
1826 | goto out; | |
1827 | ||
1828 | n = ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
1829 | base = memslot->base_gfn / BITS_PER_LONG; | |
1830 | ||
1831 | for (i = 0; i < n/sizeof(long); ++i) { | |
1832 | memslot->dirty_bitmap[i] = dirty_bitmap[base + i]; | |
1833 | dirty_bitmap[base + i] = 0; | |
1834 | } | |
1835 | r = 0; | |
1836 | out: | |
1837 | return r; | |
1838 | } | |
1839 | ||
1840 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
1841 | struct kvm_dirty_log *log) | |
1842 | { | |
1843 | int r; | |
1844 | int n; | |
1845 | struct kvm_memory_slot *memslot; | |
1846 | int is_dirty = 0; | |
1847 | ||
1848 | spin_lock(&kvm->arch.dirty_log_lock); | |
1849 | ||
1850 | r = kvm_ia64_sync_dirty_log(kvm, log); | |
1851 | if (r) | |
1852 | goto out; | |
1853 | ||
1854 | r = kvm_get_dirty_log(kvm, log, &is_dirty); | |
1855 | if (r) | |
1856 | goto out; | |
1857 | ||
1858 | /* If nothing is dirty, don't bother messing with page tables. */ | |
1859 | if (is_dirty) { | |
1860 | kvm_flush_remote_tlbs(kvm); | |
1861 | memslot = &kvm->memslots[log->slot]; | |
1862 | n = ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
1863 | memset(memslot->dirty_bitmap, 0, n); | |
1864 | } | |
1865 | r = 0; | |
1866 | out: | |
1867 | spin_unlock(&kvm->arch.dirty_log_lock); | |
1868 | return r; | |
1869 | } | |
1870 | ||
1871 | int kvm_arch_hardware_setup(void) | |
1872 | { | |
1873 | return 0; | |
1874 | } | |
1875 | ||
1876 | void kvm_arch_hardware_unsetup(void) | |
1877 | { | |
1878 | } | |
1879 | ||
1880 | static void vcpu_kick_intr(void *info) | |
1881 | { | |
1882 | #ifdef DEBUG | |
1883 | struct kvm_vcpu *vcpu = (struct kvm_vcpu *)info; | |
1884 | printk(KERN_DEBUG"vcpu_kick_intr %p \n", vcpu); | |
1885 | #endif | |
1886 | } | |
1887 | ||
1888 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu) | |
1889 | { | |
1890 | int ipi_pcpu = vcpu->cpu; | |
decc9016 | 1891 | int cpu = get_cpu(); |
b024b793 XZ |
1892 | |
1893 | if (waitqueue_active(&vcpu->wq)) | |
1894 | wake_up_interruptible(&vcpu->wq); | |
1895 | ||
decc9016 | 1896 | if (vcpu->guest_mode && cpu != ipi_pcpu) |
2f73ccab | 1897 | smp_call_function_single(ipi_pcpu, vcpu_kick_intr, vcpu, 0); |
decc9016 | 1898 | put_cpu(); |
b024b793 XZ |
1899 | } |
1900 | ||
58c2dde1 | 1901 | int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq) |
b024b793 | 1902 | { |
58c2dde1 | 1903 | return __apic_accept_irq(vcpu, irq->vector); |
b024b793 XZ |
1904 | } |
1905 | ||
1906 | int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest) | |
1907 | { | |
1908 | return apic->vcpu->vcpu_id == dest; | |
1909 | } | |
1910 | ||
1911 | int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda) | |
1912 | { | |
1913 | return 0; | |
1914 | } | |
1915 | ||
e1035715 | 1916 | int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2) |
b024b793 | 1917 | { |
e1035715 | 1918 | return vcpu1->arch.xtp - vcpu2->arch.xtp; |
b024b793 XZ |
1919 | } |
1920 | ||
343f94fe GN |
1921 | int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source, |
1922 | int short_hand, int dest, int dest_mode) | |
1923 | { | |
58c2dde1 | 1924 | struct kvm_lapic *target = vcpu->arch.apic; |
343f94fe GN |
1925 | return (dest_mode == 0) ? |
1926 | kvm_apic_match_physical_addr(target, dest) : | |
1927 | kvm_apic_match_logical_addr(target, dest); | |
1928 | } | |
1929 | ||
b024b793 XZ |
1930 | static int find_highest_bits(int *dat) |
1931 | { | |
1932 | u32 bits, bitnum; | |
1933 | int i; | |
1934 | ||
1935 | /* loop for all 256 bits */ | |
1936 | for (i = 7; i >= 0 ; i--) { | |
1937 | bits = dat[i]; | |
1938 | if (bits) { | |
1939 | bitnum = fls(bits); | |
1940 | return i * 32 + bitnum - 1; | |
1941 | } | |
1942 | } | |
1943 | ||
1944 | return -1; | |
1945 | } | |
1946 | ||
1947 | int kvm_highest_pending_irq(struct kvm_vcpu *vcpu) | |
1948 | { | |
1949 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); | |
1950 | ||
1951 | if (vpd->irr[0] & (1UL << NMI_VECTOR)) | |
1952 | return NMI_VECTOR; | |
1953 | if (vpd->irr[0] & (1UL << ExtINT_VECTOR)) | |
1954 | return ExtINT_VECTOR; | |
1955 | ||
1956 | return find_highest_bits((int *)&vpd->irr[0]); | |
1957 | } | |
1958 | ||
1959 | int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu) | |
1960 | { | |
1961 | if (kvm_highest_pending_irq(vcpu) != -1) | |
1962 | return 1; | |
1963 | return 0; | |
1964 | } | |
1965 | ||
3d80840d MT |
1966 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) |
1967 | { | |
decc9016 | 1968 | return vcpu->arch.timer_fired; |
3d80840d MT |
1969 | } |
1970 | ||
b024b793 XZ |
1971 | gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn) |
1972 | { | |
1973 | return gfn; | |
1974 | } | |
1975 | ||
1976 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu) | |
1977 | { | |
a4535290 | 1978 | return vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE; |
b024b793 | 1979 | } |
62d9f0db MT |
1980 | |
1981 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, | |
1982 | struct kvm_mp_state *mp_state) | |
1983 | { | |
8c4b537d XZ |
1984 | vcpu_load(vcpu); |
1985 | mp_state->mp_state = vcpu->arch.mp_state; | |
1986 | vcpu_put(vcpu); | |
1987 | return 0; | |
1988 | } | |
1989 | ||
1990 | static int vcpu_reset(struct kvm_vcpu *vcpu) | |
1991 | { | |
1992 | int r; | |
1993 | long psr; | |
1994 | local_irq_save(psr); | |
1995 | r = kvm_insert_vmm_mapping(vcpu); | |
1996 | if (r) | |
1997 | goto fail; | |
1998 | ||
1999 | vcpu->arch.launched = 0; | |
2000 | kvm_arch_vcpu_uninit(vcpu); | |
2001 | r = kvm_arch_vcpu_init(vcpu); | |
2002 | if (r) | |
2003 | goto fail; | |
2004 | ||
2005 | kvm_purge_vmm_mapping(vcpu); | |
2006 | r = 0; | |
2007 | fail: | |
2008 | local_irq_restore(psr); | |
2009 | return r; | |
62d9f0db MT |
2010 | } |
2011 | ||
2012 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
2013 | struct kvm_mp_state *mp_state) | |
2014 | { | |
8c4b537d XZ |
2015 | int r = 0; |
2016 | ||
2017 | vcpu_load(vcpu); | |
2018 | vcpu->arch.mp_state = mp_state->mp_state; | |
2019 | if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED) | |
2020 | r = vcpu_reset(vcpu); | |
2021 | vcpu_put(vcpu); | |
2022 | return r; | |
62d9f0db | 2023 | } |