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b024b793 | 1 | /* |
d7558148 | 2 | * kvm_ia64.c: Basic KVM support On Itanium series processors |
b024b793 XZ |
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> | |
b024b793 | 26 | #include <linux/fs.h> |
5a0e3ad6 | 27 | #include <linux/slab.h> |
b024b793 XZ |
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> |
a1b60c1c | 36 | #include <linux/pci.h> |
b024b793 XZ |
37 | |
38 | #include <asm/pgtable.h> | |
39 | #include <asm/gcc_intrin.h> | |
40 | #include <asm/pal.h> | |
41 | #include <asm/cacheflush.h> | |
42 | #include <asm/div64.h> | |
43 | #include <asm/tlb.h> | |
9f726323 | 44 | #include <asm/elf.h> |
0c72ea7f JS |
45 | #include <asm/sn/addrs.h> |
46 | #include <asm/sn/clksupport.h> | |
47 | #include <asm/sn/shub_mmr.h> | |
b024b793 XZ |
48 | |
49 | #include "misc.h" | |
50 | #include "vti.h" | |
51 | #include "iodev.h" | |
52 | #include "ioapic.h" | |
53 | #include "lapic.h" | |
2f749771 | 54 | #include "irq.h" |
b024b793 XZ |
55 | |
56 | static unsigned long kvm_vmm_base; | |
57 | static unsigned long kvm_vsa_base; | |
58 | static unsigned long kvm_vm_buffer; | |
59 | static unsigned long kvm_vm_buffer_size; | |
60 | unsigned long kvm_vmm_gp; | |
61 | ||
62 | static long vp_env_info; | |
63 | ||
64 | static struct kvm_vmm_info *kvm_vmm_info; | |
65 | ||
66 | static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu); | |
67 | ||
68 | struct kvm_stats_debugfs_item debugfs_entries[] = { | |
69 | { NULL } | |
70 | }; | |
71 | ||
c6c9fcdf JS |
72 | static unsigned long kvm_get_itc(struct kvm_vcpu *vcpu) |
73 | { | |
74 | #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC) | |
75 | if (vcpu->kvm->arch.is_sn2) | |
76 | return rtc_time(); | |
77 | else | |
78 | #endif | |
79 | return ia64_getreg(_IA64_REG_AR_ITC); | |
80 | } | |
81 | ||
b024b793 XZ |
82 | static void kvm_flush_icache(unsigned long start, unsigned long len) |
83 | { | |
84 | int l; | |
85 | ||
86 | for (l = 0; l < (len + 32); l += 32) | |
7120569c | 87 | ia64_fc((void *)(start + l)); |
b024b793 XZ |
88 | |
89 | ia64_sync_i(); | |
90 | ia64_srlz_i(); | |
91 | } | |
92 | ||
93 | static void kvm_flush_tlb_all(void) | |
94 | { | |
95 | unsigned long i, j, count0, count1, stride0, stride1, addr; | |
96 | long flags; | |
97 | ||
98 | addr = local_cpu_data->ptce_base; | |
99 | count0 = local_cpu_data->ptce_count[0]; | |
100 | count1 = local_cpu_data->ptce_count[1]; | |
101 | stride0 = local_cpu_data->ptce_stride[0]; | |
102 | stride1 = local_cpu_data->ptce_stride[1]; | |
103 | ||
104 | local_irq_save(flags); | |
105 | for (i = 0; i < count0; ++i) { | |
106 | for (j = 0; j < count1; ++j) { | |
107 | ia64_ptce(addr); | |
108 | addr += stride1; | |
109 | } | |
110 | addr += stride0; | |
111 | } | |
112 | local_irq_restore(flags); | |
113 | ia64_srlz_i(); /* srlz.i implies srlz.d */ | |
114 | } | |
115 | ||
116 | long ia64_pal_vp_create(u64 *vpd, u64 *host_iva, u64 *opt_handler) | |
117 | { | |
118 | struct ia64_pal_retval iprv; | |
119 | ||
120 | PAL_CALL_STK(iprv, PAL_VP_CREATE, (u64)vpd, (u64)host_iva, | |
121 | (u64)opt_handler); | |
122 | ||
123 | return iprv.status; | |
124 | } | |
125 | ||
126 | static DEFINE_SPINLOCK(vp_lock); | |
127 | ||
10474ae8 | 128 | int kvm_arch_hardware_enable(void *garbage) |
b024b793 XZ |
129 | { |
130 | long status; | |
131 | long tmp_base; | |
132 | unsigned long pte; | |
133 | unsigned long saved_psr; | |
134 | int slot; | |
135 | ||
0c72ea7f | 136 | pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL)); |
b024b793 XZ |
137 | local_irq_save(saved_psr); |
138 | slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT); | |
cab7a1ee | 139 | local_irq_restore(saved_psr); |
b024b793 | 140 | if (slot < 0) |
10474ae8 | 141 | return -EINVAL; |
b024b793 XZ |
142 | |
143 | spin_lock(&vp_lock); | |
144 | status = ia64_pal_vp_init_env(kvm_vsa_base ? | |
145 | VP_INIT_ENV : VP_INIT_ENV_INITALIZE, | |
146 | __pa(kvm_vm_buffer), KVM_VM_BUFFER_BASE, &tmp_base); | |
147 | if (status != 0) { | |
3499f4d0 | 148 | spin_unlock(&vp_lock); |
b024b793 | 149 | printk(KERN_WARNING"kvm: Failed to Enable VT Support!!!!\n"); |
10474ae8 | 150 | return -EINVAL; |
b024b793 XZ |
151 | } |
152 | ||
153 | if (!kvm_vsa_base) { | |
154 | kvm_vsa_base = tmp_base; | |
155 | printk(KERN_INFO"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base); | |
156 | } | |
157 | spin_unlock(&vp_lock); | |
158 | ia64_ptr_entry(0x3, slot); | |
10474ae8 AG |
159 | |
160 | return 0; | |
b024b793 XZ |
161 | } |
162 | ||
163 | void kvm_arch_hardware_disable(void *garbage) | |
164 | { | |
165 | ||
166 | long status; | |
167 | int slot; | |
168 | unsigned long pte; | |
169 | unsigned long saved_psr; | |
170 | unsigned long host_iva = ia64_getreg(_IA64_REG_CR_IVA); | |
171 | ||
172 | pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), | |
173 | PAGE_KERNEL)); | |
174 | ||
175 | local_irq_save(saved_psr); | |
176 | slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT); | |
cab7a1ee | 177 | local_irq_restore(saved_psr); |
b024b793 XZ |
178 | if (slot < 0) |
179 | return; | |
b024b793 XZ |
180 | |
181 | status = ia64_pal_vp_exit_env(host_iva); | |
182 | if (status) | |
183 | printk(KERN_DEBUG"kvm: Failed to disable VT support! :%ld\n", | |
184 | status); | |
185 | ia64_ptr_entry(0x3, slot); | |
186 | } | |
187 | ||
188 | void kvm_arch_check_processor_compat(void *rtn) | |
189 | { | |
190 | *(int *)rtn = 0; | |
191 | } | |
192 | ||
193 | int kvm_dev_ioctl_check_extension(long ext) | |
194 | { | |
195 | ||
196 | int r; | |
197 | ||
198 | switch (ext) { | |
199 | case KVM_CAP_IRQCHIP: | |
8c4b537d | 200 | case KVM_CAP_MP_STATE: |
4925663a | 201 | case KVM_CAP_IRQ_INJECT_STATUS: |
b024b793 XZ |
202 | r = 1; |
203 | break; | |
7f39f8ac LV |
204 | case KVM_CAP_COALESCED_MMIO: |
205 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
206 | break; | |
4cee4b72 | 207 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
2381ad24 | 208 | case KVM_CAP_IOMMU: |
a1b60c1c | 209 | r = iommu_present(&pci_bus_type); |
2381ad24 | 210 | break; |
4cee4b72 | 211 | #endif |
b024b793 XZ |
212 | default: |
213 | r = 0; | |
214 | } | |
215 | return r; | |
216 | ||
217 | } | |
218 | ||
b024b793 XZ |
219 | static int handle_vm_error(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) |
220 | { | |
221 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
222 | kvm_run->hw.hardware_exit_reason = 1; | |
223 | return 0; | |
224 | } | |
225 | ||
226 | static int handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
227 | { | |
228 | struct kvm_mmio_req *p; | |
229 | struct kvm_io_device *mmio_dev; | |
bda9020e | 230 | int r; |
b024b793 XZ |
231 | |
232 | p = kvm_get_vcpu_ioreq(vcpu); | |
233 | ||
234 | if ((p->addr & PAGE_MASK) == IOAPIC_DEFAULT_BASE_ADDRESS) | |
235 | goto mmio; | |
236 | vcpu->mmio_needed = 1; | |
f78146b0 AK |
237 | vcpu->mmio_fragments[0].gpa = kvm_run->mmio.phys_addr = p->addr; |
238 | vcpu->mmio_fragments[0].len = kvm_run->mmio.len = p->size; | |
b024b793 XZ |
239 | vcpu->mmio_is_write = kvm_run->mmio.is_write = !p->dir; |
240 | ||
241 | if (vcpu->mmio_is_write) | |
f78146b0 | 242 | memcpy(vcpu->arch.mmio_data, &p->data, p->size); |
b024b793 XZ |
243 | memcpy(kvm_run->mmio.data, &p->data, p->size); |
244 | kvm_run->exit_reason = KVM_EXIT_MMIO; | |
245 | return 0; | |
246 | mmio: | |
bda9020e | 247 | if (p->dir) |
e93f8a0f | 248 | r = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, p->addr, |
bda9020e MT |
249 | p->size, &p->data); |
250 | else | |
e93f8a0f | 251 | r = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, p->addr, |
bda9020e MT |
252 | p->size, &p->data); |
253 | if (r) | |
b024b793 XZ |
254 | printk(KERN_ERR"kvm: No iodevice found! addr:%lx\n", p->addr); |
255 | p->state = STATE_IORESP_READY; | |
256 | ||
257 | return 1; | |
258 | } | |
259 | ||
260 | static int handle_pal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
261 | { | |
262 | struct exit_ctl_data *p; | |
263 | ||
264 | p = kvm_get_exit_data(vcpu); | |
265 | ||
266 | if (p->exit_reason == EXIT_REASON_PAL_CALL) | |
267 | return kvm_pal_emul(vcpu, kvm_run); | |
268 | else { | |
269 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
270 | kvm_run->hw.hardware_exit_reason = 2; | |
271 | return 0; | |
272 | } | |
273 | } | |
274 | ||
275 | static int handle_sal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
276 | { | |
277 | struct exit_ctl_data *p; | |
278 | ||
279 | p = kvm_get_exit_data(vcpu); | |
280 | ||
281 | if (p->exit_reason == EXIT_REASON_SAL_CALL) { | |
282 | kvm_sal_emul(vcpu); | |
283 | return 1; | |
284 | } else { | |
285 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
286 | kvm_run->hw.hardware_exit_reason = 3; | |
287 | return 0; | |
288 | } | |
289 | ||
290 | } | |
291 | ||
58c2dde1 GN |
292 | static int __apic_accept_irq(struct kvm_vcpu *vcpu, uint64_t vector) |
293 | { | |
294 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); | |
295 | ||
296 | if (!test_and_set_bit(vector, &vpd->irr[0])) { | |
297 | vcpu->arch.irq_new_pending = 1; | |
298 | kvm_vcpu_kick(vcpu); | |
299 | return 1; | |
300 | } | |
301 | return 0; | |
302 | } | |
303 | ||
b024b793 XZ |
304 | /* |
305 | * offset: address offset to IPI space. | |
306 | * value: deliver value. | |
307 | */ | |
308 | static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm, | |
309 | uint64_t vector) | |
310 | { | |
311 | switch (dm) { | |
312 | case SAPIC_FIXED: | |
b024b793 XZ |
313 | break; |
314 | case SAPIC_NMI: | |
58c2dde1 | 315 | vector = 2; |
b024b793 XZ |
316 | break; |
317 | case SAPIC_EXTINT: | |
58c2dde1 | 318 | vector = 0; |
b024b793 XZ |
319 | break; |
320 | case SAPIC_INIT: | |
321 | case SAPIC_PMI: | |
322 | default: | |
323 | printk(KERN_ERR"kvm: Unimplemented Deliver reserved IPI!\n"); | |
58c2dde1 | 324 | return; |
b024b793 | 325 | } |
58c2dde1 | 326 | __apic_accept_irq(vcpu, vector); |
b024b793 XZ |
327 | } |
328 | ||
329 | static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id, | |
330 | unsigned long eid) | |
331 | { | |
332 | union ia64_lid lid; | |
333 | int i; | |
988a2cae | 334 | struct kvm_vcpu *vcpu; |
b024b793 | 335 | |
988a2cae GN |
336 | kvm_for_each_vcpu(i, vcpu, kvm) { |
337 | lid.val = VCPU_LID(vcpu); | |
338 | if (lid.id == id && lid.eid == eid) | |
339 | return vcpu; | |
b024b793 XZ |
340 | } |
341 | ||
342 | return NULL; | |
343 | } | |
344 | ||
345 | static int handle_ipi(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
346 | { | |
347 | struct exit_ctl_data *p = kvm_get_exit_data(vcpu); | |
348 | struct kvm_vcpu *target_vcpu; | |
349 | struct kvm_pt_regs *regs; | |
350 | union ia64_ipi_a addr = p->u.ipi_data.addr; | |
351 | union ia64_ipi_d data = p->u.ipi_data.data; | |
352 | ||
353 | target_vcpu = lid_to_vcpu(vcpu->kvm, addr.id, addr.eid); | |
354 | if (!target_vcpu) | |
355 | return handle_vm_error(vcpu, kvm_run); | |
356 | ||
357 | if (!target_vcpu->arch.launched) { | |
358 | regs = vcpu_regs(target_vcpu); | |
359 | ||
360 | regs->cr_iip = vcpu->kvm->arch.rdv_sal_data.boot_ip; | |
361 | regs->r1 = vcpu->kvm->arch.rdv_sal_data.boot_gp; | |
362 | ||
a4535290 | 363 | target_vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; |
b024b793 XZ |
364 | if (waitqueue_active(&target_vcpu->wq)) |
365 | wake_up_interruptible(&target_vcpu->wq); | |
366 | } else { | |
367 | vcpu_deliver_ipi(target_vcpu, data.dm, data.vector); | |
368 | if (target_vcpu != vcpu) | |
369 | kvm_vcpu_kick(target_vcpu); | |
370 | } | |
371 | ||
372 | return 1; | |
373 | } | |
374 | ||
375 | struct call_data { | |
376 | struct kvm_ptc_g ptc_g_data; | |
377 | struct kvm_vcpu *vcpu; | |
378 | }; | |
379 | ||
380 | static void vcpu_global_purge(void *info) | |
381 | { | |
382 | struct call_data *p = (struct call_data *)info; | |
383 | struct kvm_vcpu *vcpu = p->vcpu; | |
384 | ||
385 | if (test_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests)) | |
386 | return; | |
387 | ||
388 | set_bit(KVM_REQ_PTC_G, &vcpu->requests); | |
389 | if (vcpu->arch.ptc_g_count < MAX_PTC_G_NUM) { | |
390 | vcpu->arch.ptc_g_data[vcpu->arch.ptc_g_count++] = | |
391 | p->ptc_g_data; | |
392 | } else { | |
393 | clear_bit(KVM_REQ_PTC_G, &vcpu->requests); | |
394 | vcpu->arch.ptc_g_count = 0; | |
395 | set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests); | |
396 | } | |
397 | } | |
398 | ||
399 | static int handle_global_purge(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
400 | { | |
401 | struct exit_ctl_data *p = kvm_get_exit_data(vcpu); | |
402 | struct kvm *kvm = vcpu->kvm; | |
403 | struct call_data call_data; | |
404 | int i; | |
988a2cae | 405 | struct kvm_vcpu *vcpui; |
decc9016 | 406 | |
b024b793 XZ |
407 | call_data.ptc_g_data = p->u.ptc_g_data; |
408 | ||
988a2cae GN |
409 | kvm_for_each_vcpu(i, vcpui, kvm) { |
410 | if (vcpui->arch.mp_state == KVM_MP_STATE_UNINITIALIZED || | |
411 | vcpu == vcpui) | |
b024b793 XZ |
412 | continue; |
413 | ||
988a2cae GN |
414 | if (waitqueue_active(&vcpui->wq)) |
415 | wake_up_interruptible(&vcpui->wq); | |
b024b793 | 416 | |
988a2cae GN |
417 | if (vcpui->cpu != -1) { |
418 | call_data.vcpu = vcpui; | |
419 | smp_call_function_single(vcpui->cpu, | |
2f73ccab | 420 | vcpu_global_purge, &call_data, 1); |
b024b793 XZ |
421 | } else |
422 | printk(KERN_WARNING"kvm: Uninit vcpu received ipi!\n"); | |
423 | ||
424 | } | |
425 | return 1; | |
426 | } | |
427 | ||
428 | static int handle_switch_rr6(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
429 | { | |
430 | return 1; | |
431 | } | |
432 | ||
0c72ea7f JS |
433 | static int kvm_sn2_setup_mappings(struct kvm_vcpu *vcpu) |
434 | { | |
435 | unsigned long pte, rtc_phys_addr, map_addr; | |
436 | int slot; | |
437 | ||
438 | map_addr = KVM_VMM_BASE + (1UL << KVM_VMM_SHIFT); | |
439 | rtc_phys_addr = LOCAL_MMR_OFFSET | SH_RTC; | |
440 | pte = pte_val(mk_pte_phys(rtc_phys_addr, PAGE_KERNEL_UC)); | |
441 | slot = ia64_itr_entry(0x3, map_addr, pte, PAGE_SHIFT); | |
442 | vcpu->arch.sn_rtc_tr_slot = slot; | |
443 | if (slot < 0) { | |
444 | printk(KERN_ERR "Mayday mayday! RTC mapping failed!\n"); | |
445 | slot = 0; | |
446 | } | |
447 | return slot; | |
448 | } | |
449 | ||
b024b793 XZ |
450 | int kvm_emulate_halt(struct kvm_vcpu *vcpu) |
451 | { | |
452 | ||
453 | ktime_t kt; | |
454 | long itc_diff; | |
455 | unsigned long vcpu_now_itc; | |
b024b793 XZ |
456 | unsigned long expires; |
457 | struct hrtimer *p_ht = &vcpu->arch.hlt_timer; | |
458 | unsigned long cyc_per_usec = local_cpu_data->cyc_per_usec; | |
459 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); | |
460 | ||
decc9016 | 461 | if (irqchip_in_kernel(vcpu->kvm)) { |
b024b793 | 462 | |
c6c9fcdf | 463 | vcpu_now_itc = kvm_get_itc(vcpu) + vcpu->arch.itc_offset; |
b024b793 | 464 | |
decc9016 XZ |
465 | if (time_after(vcpu_now_itc, vpd->itm)) { |
466 | vcpu->arch.timer_check = 1; | |
467 | return 1; | |
468 | } | |
469 | itc_diff = vpd->itm - vcpu_now_itc; | |
470 | if (itc_diff < 0) | |
471 | itc_diff = -itc_diff; | |
472 | ||
473 | expires = div64_u64(itc_diff, cyc_per_usec); | |
474 | kt = ktime_set(0, 1000 * expires); | |
475 | ||
decc9016 XZ |
476 | vcpu->arch.ht_active = 1; |
477 | hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS); | |
b024b793 | 478 | |
a4535290 | 479 | vcpu->arch.mp_state = KVM_MP_STATE_HALTED; |
b024b793 XZ |
480 | kvm_vcpu_block(vcpu); |
481 | hrtimer_cancel(p_ht); | |
482 | vcpu->arch.ht_active = 0; | |
483 | ||
09cec754 GN |
484 | if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests) || |
485 | kvm_cpu_has_pending_timer(vcpu)) | |
decc9016 | 486 | if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED) |
09cec754 | 487 | vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; |
decc9016 | 488 | |
a4535290 | 489 | if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE) |
b024b793 XZ |
490 | return -EINTR; |
491 | return 1; | |
492 | } else { | |
493 | printk(KERN_ERR"kvm: Unsupported userspace halt!"); | |
494 | return 0; | |
495 | } | |
496 | } | |
497 | ||
498 | static int handle_vm_shutdown(struct kvm_vcpu *vcpu, | |
499 | struct kvm_run *kvm_run) | |
500 | { | |
501 | kvm_run->exit_reason = KVM_EXIT_SHUTDOWN; | |
502 | return 0; | |
503 | } | |
504 | ||
505 | static int handle_external_interrupt(struct kvm_vcpu *vcpu, | |
506 | struct kvm_run *kvm_run) | |
507 | { | |
508 | return 1; | |
509 | } | |
510 | ||
7d637978 XZ |
511 | static int handle_vcpu_debug(struct kvm_vcpu *vcpu, |
512 | struct kvm_run *kvm_run) | |
513 | { | |
514 | printk("VMM: %s", vcpu->arch.log_buf); | |
515 | return 1; | |
516 | } | |
517 | ||
b024b793 XZ |
518 | static int (*kvm_vti_exit_handlers[])(struct kvm_vcpu *vcpu, |
519 | struct kvm_run *kvm_run) = { | |
520 | [EXIT_REASON_VM_PANIC] = handle_vm_error, | |
521 | [EXIT_REASON_MMIO_INSTRUCTION] = handle_mmio, | |
522 | [EXIT_REASON_PAL_CALL] = handle_pal_call, | |
523 | [EXIT_REASON_SAL_CALL] = handle_sal_call, | |
524 | [EXIT_REASON_SWITCH_RR6] = handle_switch_rr6, | |
525 | [EXIT_REASON_VM_DESTROY] = handle_vm_shutdown, | |
526 | [EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt, | |
527 | [EXIT_REASON_IPI] = handle_ipi, | |
528 | [EXIT_REASON_PTC_G] = handle_global_purge, | |
7d637978 | 529 | [EXIT_REASON_DEBUG] = handle_vcpu_debug, |
b024b793 XZ |
530 | |
531 | }; | |
532 | ||
533 | static const int kvm_vti_max_exit_handlers = | |
534 | sizeof(kvm_vti_exit_handlers)/sizeof(*kvm_vti_exit_handlers); | |
535 | ||
b024b793 XZ |
536 | static uint32_t kvm_get_exit_reason(struct kvm_vcpu *vcpu) |
537 | { | |
538 | struct exit_ctl_data *p_exit_data; | |
539 | ||
540 | p_exit_data = kvm_get_exit_data(vcpu); | |
541 | return p_exit_data->exit_reason; | |
542 | } | |
543 | ||
544 | /* | |
545 | * The guest has exited. See if we can fix it or if we need userspace | |
546 | * assistance. | |
547 | */ | |
548 | static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) | |
549 | { | |
550 | u32 exit_reason = kvm_get_exit_reason(vcpu); | |
551 | vcpu->arch.last_exit = exit_reason; | |
552 | ||
553 | if (exit_reason < kvm_vti_max_exit_handlers | |
554 | && kvm_vti_exit_handlers[exit_reason]) | |
555 | return kvm_vti_exit_handlers[exit_reason](vcpu, kvm_run); | |
556 | else { | |
557 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
558 | kvm_run->hw.hardware_exit_reason = exit_reason; | |
559 | } | |
560 | return 0; | |
561 | } | |
562 | ||
563 | static inline void vti_set_rr6(unsigned long rr6) | |
564 | { | |
565 | ia64_set_rr(RR6, rr6); | |
566 | ia64_srlz_i(); | |
567 | } | |
568 | ||
569 | static int kvm_insert_vmm_mapping(struct kvm_vcpu *vcpu) | |
570 | { | |
571 | unsigned long pte; | |
572 | struct kvm *kvm = vcpu->kvm; | |
573 | int r; | |
574 | ||
575 | /*Insert a pair of tr to map vmm*/ | |
576 | pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL)); | |
577 | r = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT); | |
578 | if (r < 0) | |
579 | goto out; | |
580 | vcpu->arch.vmm_tr_slot = r; | |
581 | /*Insert a pairt of tr to map data of vm*/ | |
582 | pte = pte_val(mk_pte_phys(__pa(kvm->arch.vm_base), PAGE_KERNEL)); | |
583 | r = ia64_itr_entry(0x3, KVM_VM_DATA_BASE, | |
584 | pte, KVM_VM_DATA_SHIFT); | |
585 | if (r < 0) | |
586 | goto out; | |
587 | vcpu->arch.vm_tr_slot = r; | |
0c72ea7f JS |
588 | |
589 | #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC) | |
590 | if (kvm->arch.is_sn2) { | |
591 | r = kvm_sn2_setup_mappings(vcpu); | |
592 | if (r < 0) | |
593 | goto out; | |
594 | } | |
595 | #endif | |
596 | ||
b024b793 XZ |
597 | r = 0; |
598 | out: | |
599 | return r; | |
b024b793 XZ |
600 | } |
601 | ||
602 | static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu) | |
603 | { | |
0c72ea7f | 604 | struct kvm *kvm = vcpu->kvm; |
b024b793 XZ |
605 | ia64_ptr_entry(0x3, vcpu->arch.vmm_tr_slot); |
606 | ia64_ptr_entry(0x3, vcpu->arch.vm_tr_slot); | |
0c72ea7f JS |
607 | #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC) |
608 | if (kvm->arch.is_sn2) | |
609 | ia64_ptr_entry(0x3, vcpu->arch.sn_rtc_tr_slot); | |
610 | #endif | |
b024b793 XZ |
611 | } |
612 | ||
613 | static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu) | |
614 | { | |
4d13c3b0 JS |
615 | unsigned long psr; |
616 | int r; | |
b024b793 XZ |
617 | int cpu = smp_processor_id(); |
618 | ||
619 | if (vcpu->arch.last_run_cpu != cpu || | |
620 | per_cpu(last_vcpu, cpu) != vcpu) { | |
621 | per_cpu(last_vcpu, cpu) = vcpu; | |
622 | vcpu->arch.last_run_cpu = cpu; | |
623 | kvm_flush_tlb_all(); | |
624 | } | |
625 | ||
626 | vcpu->arch.host_rr6 = ia64_get_rr(RR6); | |
627 | vti_set_rr6(vcpu->arch.vmm_rr); | |
4d13c3b0 JS |
628 | local_irq_save(psr); |
629 | r = kvm_insert_vmm_mapping(vcpu); | |
630 | local_irq_restore(psr); | |
631 | return r; | |
b024b793 | 632 | } |
c6b60c69 | 633 | |
b024b793 XZ |
634 | static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu) |
635 | { | |
636 | kvm_purge_vmm_mapping(vcpu); | |
637 | vti_set_rr6(vcpu->arch.host_rr6); | |
638 | } | |
639 | ||
c6b60c69 | 640 | static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) |
b024b793 XZ |
641 | { |
642 | union context *host_ctx, *guest_ctx; | |
f656ce01 | 643 | int r, idx; |
b024b793 | 644 | |
f656ce01 | 645 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
b024b793 XZ |
646 | |
647 | again: | |
b024b793 | 648 | if (signal_pending(current)) { |
b024b793 XZ |
649 | r = -EINTR; |
650 | kvm_run->exit_reason = KVM_EXIT_INTR; | |
651 | goto out; | |
652 | } | |
653 | ||
d24d2c1c JS |
654 | preempt_disable(); |
655 | local_irq_disable(); | |
656 | ||
c6b60c69 JS |
657 | /*Get host and guest context with guest address space.*/ |
658 | host_ctx = kvm_get_host_context(vcpu); | |
659 | guest_ctx = kvm_get_guest_context(vcpu); | |
660 | ||
32f88400 | 661 | clear_bit(KVM_REQ_KICK, &vcpu->requests); |
c6b60c69 JS |
662 | |
663 | r = kvm_vcpu_pre_transition(vcpu); | |
664 | if (r < 0) | |
665 | goto vcpu_run_fail; | |
666 | ||
f656ce01 | 667 | srcu_read_unlock(&vcpu->kvm->srcu, idx); |
6b7e2d09 | 668 | vcpu->mode = IN_GUEST_MODE; |
b024b793 | 669 | kvm_guest_enter(); |
c6b60c69 JS |
670 | |
671 | /* | |
672 | * Transition to the guest | |
673 | */ | |
674 | kvm_vmm_info->tramp_entry(host_ctx, guest_ctx); | |
675 | ||
676 | kvm_vcpu_post_transition(vcpu); | |
b024b793 XZ |
677 | |
678 | vcpu->arch.launched = 1; | |
32f88400 | 679 | set_bit(KVM_REQ_KICK, &vcpu->requests); |
b024b793 XZ |
680 | local_irq_enable(); |
681 | ||
682 | /* | |
683 | * We must have an instruction between local_irq_enable() and | |
684 | * kvm_guest_exit(), so the timer interrupt isn't delayed by | |
685 | * the interrupt shadow. The stat.exits increment will do nicely. | |
686 | * But we need to prevent reordering, hence this barrier(): | |
687 | */ | |
688 | barrier(); | |
b024b793 | 689 | kvm_guest_exit(); |
6b7e2d09 | 690 | vcpu->mode = OUTSIDE_GUEST_MODE; |
b024b793 XZ |
691 | preempt_enable(); |
692 | ||
f656ce01 | 693 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
c6b60c69 | 694 | |
b024b793 XZ |
695 | r = kvm_handle_exit(kvm_run, vcpu); |
696 | ||
697 | if (r > 0) { | |
698 | if (!need_resched()) | |
699 | goto again; | |
700 | } | |
701 | ||
702 | out: | |
f656ce01 | 703 | srcu_read_unlock(&vcpu->kvm->srcu, idx); |
b024b793 XZ |
704 | if (r > 0) { |
705 | kvm_resched(vcpu); | |
f656ce01 | 706 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
b024b793 XZ |
707 | goto again; |
708 | } | |
709 | ||
710 | return r; | |
c6b60c69 JS |
711 | |
712 | vcpu_run_fail: | |
713 | local_irq_enable(); | |
714 | preempt_enable(); | |
715 | kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY; | |
716 | goto out; | |
b024b793 XZ |
717 | } |
718 | ||
719 | static void kvm_set_mmio_data(struct kvm_vcpu *vcpu) | |
720 | { | |
721 | struct kvm_mmio_req *p = kvm_get_vcpu_ioreq(vcpu); | |
722 | ||
723 | if (!vcpu->mmio_is_write) | |
f78146b0 | 724 | memcpy(&p->data, vcpu->arch.mmio_data, 8); |
b024b793 XZ |
725 | p->state = STATE_IORESP_READY; |
726 | } | |
727 | ||
728 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
729 | { | |
730 | int r; | |
731 | sigset_t sigsaved; | |
732 | ||
a2e4e289 XZ |
733 | if (vcpu->sigset_active) |
734 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
735 | ||
a4535290 | 736 | if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) { |
b024b793 | 737 | kvm_vcpu_block(vcpu); |
decc9016 | 738 | clear_bit(KVM_REQ_UNHALT, &vcpu->requests); |
a2e4e289 XZ |
739 | r = -EAGAIN; |
740 | goto out; | |
b024b793 XZ |
741 | } |
742 | ||
b024b793 | 743 | if (vcpu->mmio_needed) { |
f78146b0 | 744 | memcpy(vcpu->arch.mmio_data, kvm_run->mmio.data, 8); |
b024b793 XZ |
745 | kvm_set_mmio_data(vcpu); |
746 | vcpu->mmio_read_completed = 1; | |
747 | vcpu->mmio_needed = 0; | |
748 | } | |
749 | r = __vcpu_run(vcpu, kvm_run); | |
a2e4e289 | 750 | out: |
b024b793 XZ |
751 | if (vcpu->sigset_active) |
752 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
753 | ||
b024b793 XZ |
754 | return r; |
755 | } | |
756 | ||
d89f5eff | 757 | struct kvm *kvm_arch_alloc_vm(void) |
b024b793 XZ |
758 | { |
759 | ||
760 | struct kvm *kvm; | |
761 | uint64_t vm_base; | |
762 | ||
a917f7af XZ |
763 | BUG_ON(sizeof(struct kvm) > KVM_VM_STRUCT_SIZE); |
764 | ||
b024b793 XZ |
765 | vm_base = __get_free_pages(GFP_KERNEL, get_order(KVM_VM_DATA_SIZE)); |
766 | ||
767 | if (!vm_base) | |
d89f5eff | 768 | return NULL; |
b024b793 | 769 | |
b024b793 | 770 | memset((void *)vm_base, 0, KVM_VM_DATA_SIZE); |
a917f7af XZ |
771 | kvm = (struct kvm *)(vm_base + |
772 | offsetof(struct kvm_vm_data, kvm_vm_struct)); | |
b024b793 | 773 | kvm->arch.vm_base = vm_base; |
a917f7af | 774 | printk(KERN_DEBUG"kvm: vm's data area:0x%lx\n", vm_base); |
b024b793 XZ |
775 | |
776 | return kvm; | |
777 | } | |
778 | ||
60f9a9ef | 779 | struct kvm_ia64_io_range { |
b024b793 XZ |
780 | unsigned long start; |
781 | unsigned long size; | |
782 | unsigned long type; | |
783 | }; | |
784 | ||
60f9a9ef | 785 | static const struct kvm_ia64_io_range io_ranges[] = { |
b024b793 XZ |
786 | {VGA_IO_START, VGA_IO_SIZE, GPFN_FRAME_BUFFER}, |
787 | {MMIO_START, MMIO_SIZE, GPFN_LOW_MMIO}, | |
788 | {LEGACY_IO_START, LEGACY_IO_SIZE, GPFN_LEGACY_IO}, | |
789 | {IO_SAPIC_START, IO_SAPIC_SIZE, GPFN_IOSAPIC}, | |
790 | {PIB_START, PIB_SIZE, GPFN_PIB}, | |
791 | }; | |
792 | ||
793 | static void kvm_build_io_pmt(struct kvm *kvm) | |
794 | { | |
795 | unsigned long i, j; | |
796 | ||
797 | /* Mark I/O ranges */ | |
798 | for (i = 0; i < (sizeof(io_ranges) / sizeof(struct kvm_io_range)); | |
799 | i++) { | |
800 | for (j = io_ranges[i].start; | |
801 | j < io_ranges[i].start + io_ranges[i].size; | |
802 | j += PAGE_SIZE) | |
803 | kvm_set_pmt_entry(kvm, j >> PAGE_SHIFT, | |
804 | io_ranges[i].type, 0); | |
805 | } | |
806 | ||
807 | } | |
808 | ||
809 | /*Use unused rids to virtualize guest rid.*/ | |
810 | #define GUEST_PHYSICAL_RR0 0x1739 | |
811 | #define GUEST_PHYSICAL_RR4 0x2739 | |
812 | #define VMM_INIT_RR 0x1660 | |
813 | ||
e08b9637 | 814 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
b024b793 | 815 | { |
b024b793 XZ |
816 | BUG_ON(!kvm); |
817 | ||
e08b9637 CO |
818 | if (type) |
819 | return -EINVAL; | |
820 | ||
d89f5eff JK |
821 | kvm->arch.is_sn2 = ia64_platform_is("sn2"); |
822 | ||
b024b793 XZ |
823 | kvm->arch.metaphysical_rr0 = GUEST_PHYSICAL_RR0; |
824 | kvm->arch.metaphysical_rr4 = GUEST_PHYSICAL_RR4; | |
825 | kvm->arch.vmm_init_rr = VMM_INIT_RR; | |
826 | ||
b024b793 XZ |
827 | /* |
828 | *Fill P2M entries for MMIO/IO ranges | |
829 | */ | |
830 | kvm_build_io_pmt(kvm); | |
831 | ||
2381ad24 | 832 | INIT_LIST_HEAD(&kvm->arch.assigned_dev_head); |
5550af4d SY |
833 | |
834 | /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */ | |
835 | set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap); | |
b024b793 | 836 | |
d89f5eff | 837 | return 0; |
b024b793 XZ |
838 | } |
839 | ||
840 | static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm, | |
841 | struct kvm_irqchip *chip) | |
842 | { | |
843 | int r; | |
844 | ||
845 | r = 0; | |
846 | switch (chip->chip_id) { | |
847 | case KVM_IRQCHIP_IOAPIC: | |
eba0226b | 848 | r = kvm_get_ioapic(kvm, &chip->chip.ioapic); |
b024b793 XZ |
849 | break; |
850 | default: | |
851 | r = -EINVAL; | |
852 | break; | |
853 | } | |
854 | return r; | |
855 | } | |
856 | ||
857 | static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip) | |
858 | { | |
859 | int r; | |
860 | ||
861 | r = 0; | |
862 | switch (chip->chip_id) { | |
863 | case KVM_IRQCHIP_IOAPIC: | |
eba0226b | 864 | r = kvm_set_ioapic(kvm, &chip->chip.ioapic); |
b024b793 XZ |
865 | break; |
866 | default: | |
867 | r = -EINVAL; | |
868 | break; | |
869 | } | |
870 | return r; | |
871 | } | |
872 | ||
873 | #define RESTORE_REGS(_x) vcpu->arch._x = regs->_x | |
874 | ||
875 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) | |
876 | { | |
b024b793 | 877 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); |
042b26ed | 878 | int i; |
b024b793 | 879 | |
b024b793 XZ |
880 | for (i = 0; i < 16; i++) { |
881 | vpd->vgr[i] = regs->vpd.vgr[i]; | |
882 | vpd->vbgr[i] = regs->vpd.vbgr[i]; | |
883 | } | |
884 | for (i = 0; i < 128; i++) | |
885 | vpd->vcr[i] = regs->vpd.vcr[i]; | |
886 | vpd->vhpi = regs->vpd.vhpi; | |
887 | vpd->vnat = regs->vpd.vnat; | |
888 | vpd->vbnat = regs->vpd.vbnat; | |
889 | vpd->vpsr = regs->vpd.vpsr; | |
890 | ||
891 | vpd->vpr = regs->vpd.vpr; | |
892 | ||
042b26ed | 893 | memcpy(&vcpu->arch.guest, ®s->saved_guest, sizeof(union context)); |
b024b793 XZ |
894 | |
895 | RESTORE_REGS(mp_state); | |
896 | RESTORE_REGS(vmm_rr); | |
897 | memcpy(vcpu->arch.itrs, regs->itrs, sizeof(struct thash_data) * NITRS); | |
898 | memcpy(vcpu->arch.dtrs, regs->dtrs, sizeof(struct thash_data) * NDTRS); | |
899 | RESTORE_REGS(itr_regions); | |
900 | RESTORE_REGS(dtr_regions); | |
901 | RESTORE_REGS(tc_regions); | |
902 | RESTORE_REGS(irq_check); | |
903 | RESTORE_REGS(itc_check); | |
904 | RESTORE_REGS(timer_check); | |
905 | RESTORE_REGS(timer_pending); | |
906 | RESTORE_REGS(last_itc); | |
907 | for (i = 0; i < 8; i++) { | |
908 | vcpu->arch.vrr[i] = regs->vrr[i]; | |
909 | vcpu->arch.ibr[i] = regs->ibr[i]; | |
910 | vcpu->arch.dbr[i] = regs->dbr[i]; | |
911 | } | |
912 | for (i = 0; i < 4; i++) | |
913 | vcpu->arch.insvc[i] = regs->insvc[i]; | |
914 | RESTORE_REGS(xtp); | |
915 | RESTORE_REGS(metaphysical_rr0); | |
916 | RESTORE_REGS(metaphysical_rr4); | |
917 | RESTORE_REGS(metaphysical_saved_rr0); | |
918 | RESTORE_REGS(metaphysical_saved_rr4); | |
919 | RESTORE_REGS(fp_psr); | |
920 | RESTORE_REGS(saved_gp); | |
921 | ||
922 | vcpu->arch.irq_new_pending = 1; | |
c6c9fcdf | 923 | vcpu->arch.itc_offset = regs->saved_itc - kvm_get_itc(vcpu); |
b024b793 XZ |
924 | set_bit(KVM_REQ_RESUME, &vcpu->requests); |
925 | ||
042b26ed | 926 | return 0; |
b024b793 XZ |
927 | } |
928 | ||
e6062647 YZ |
929 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event, |
930 | bool line_status) | |
23d43cf9 CD |
931 | { |
932 | if (!irqchip_in_kernel(kvm)) | |
933 | return -ENXIO; | |
934 | ||
935 | irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, | |
e6062647 YZ |
936 | irq_event->irq, irq_event->level, |
937 | line_status); | |
23d43cf9 CD |
938 | return 0; |
939 | } | |
940 | ||
b024b793 XZ |
941 | long kvm_arch_vm_ioctl(struct file *filp, |
942 | unsigned int ioctl, unsigned long arg) | |
943 | { | |
944 | struct kvm *kvm = filp->private_data; | |
945 | void __user *argp = (void __user *)arg; | |
367e1319 | 946 | int r = -ENOTTY; |
b024b793 XZ |
947 | |
948 | switch (ioctl) { | |
b024b793 XZ |
949 | case KVM_CREATE_IRQCHIP: |
950 | r = -EFAULT; | |
951 | r = kvm_ioapic_init(kvm); | |
952 | if (r) | |
953 | goto out; | |
399ec807 AK |
954 | r = kvm_setup_default_irq_routing(kvm); |
955 | if (r) { | |
175504cd | 956 | mutex_lock(&kvm->slots_lock); |
4b7bb921 | 957 | kvm_ioapic_destroy(kvm); |
175504cd | 958 | mutex_unlock(&kvm->slots_lock); |
399ec807 AK |
959 | goto out; |
960 | } | |
b024b793 | 961 | break; |
b024b793 XZ |
962 | case KVM_GET_IRQCHIP: { |
963 | /* 0: PIC master, 1: PIC slave, 2: IOAPIC */ | |
964 | struct kvm_irqchip chip; | |
965 | ||
966 | r = -EFAULT; | |
967 | if (copy_from_user(&chip, argp, sizeof chip)) | |
968 | goto out; | |
969 | r = -ENXIO; | |
970 | if (!irqchip_in_kernel(kvm)) | |
971 | goto out; | |
972 | r = kvm_vm_ioctl_get_irqchip(kvm, &chip); | |
973 | if (r) | |
974 | goto out; | |
975 | r = -EFAULT; | |
976 | if (copy_to_user(argp, &chip, sizeof chip)) | |
977 | goto out; | |
978 | r = 0; | |
979 | break; | |
980 | } | |
981 | case KVM_SET_IRQCHIP: { | |
982 | /* 0: PIC master, 1: PIC slave, 2: IOAPIC */ | |
983 | struct kvm_irqchip chip; | |
984 | ||
985 | r = -EFAULT; | |
986 | if (copy_from_user(&chip, argp, sizeof chip)) | |
987 | goto out; | |
988 | r = -ENXIO; | |
989 | if (!irqchip_in_kernel(kvm)) | |
990 | goto out; | |
991 | r = kvm_vm_ioctl_set_irqchip(kvm, &chip); | |
992 | if (r) | |
993 | goto out; | |
994 | r = 0; | |
995 | break; | |
996 | } | |
997 | default: | |
998 | ; | |
999 | } | |
1000 | out: | |
1001 | return r; | |
1002 | } | |
1003 | ||
1004 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
1005 | struct kvm_sregs *sregs) | |
1006 | { | |
1007 | return -EINVAL; | |
1008 | } | |
1009 | ||
1010 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
1011 | struct kvm_sregs *sregs) | |
1012 | { | |
1013 | return -EINVAL; | |
1014 | ||
1015 | } | |
1016 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, | |
1017 | struct kvm_translation *tr) | |
1018 | { | |
1019 | ||
1020 | return -EINVAL; | |
1021 | } | |
1022 | ||
1023 | static int kvm_alloc_vmm_area(void) | |
1024 | { | |
1025 | if (!kvm_vmm_base && (kvm_vm_buffer_size < KVM_VM_BUFFER_SIZE)) { | |
1026 | kvm_vmm_base = __get_free_pages(GFP_KERNEL, | |
1027 | get_order(KVM_VMM_SIZE)); | |
1028 | if (!kvm_vmm_base) | |
1029 | return -ENOMEM; | |
1030 | ||
1031 | memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE); | |
1032 | kvm_vm_buffer = kvm_vmm_base + VMM_SIZE; | |
1033 | ||
1034 | printk(KERN_DEBUG"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n", | |
1035 | kvm_vmm_base, kvm_vm_buffer); | |
1036 | } | |
1037 | ||
1038 | return 0; | |
1039 | } | |
1040 | ||
1041 | static void kvm_free_vmm_area(void) | |
1042 | { | |
1043 | if (kvm_vmm_base) { | |
1044 | /*Zero this area before free to avoid bits leak!!*/ | |
1045 | memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE); | |
1046 | free_pages(kvm_vmm_base, get_order(KVM_VMM_SIZE)); | |
1047 | kvm_vmm_base = 0; | |
1048 | kvm_vm_buffer = 0; | |
1049 | kvm_vsa_base = 0; | |
1050 | } | |
1051 | } | |
1052 | ||
b024b793 XZ |
1053 | static int vti_init_vpd(struct kvm_vcpu *vcpu) |
1054 | { | |
1055 | int i; | |
1056 | union cpuid3_t cpuid3; | |
1057 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); | |
1058 | ||
1059 | if (IS_ERR(vpd)) | |
1060 | return PTR_ERR(vpd); | |
1061 | ||
1062 | /* CPUID init */ | |
1063 | for (i = 0; i < 5; i++) | |
1064 | vpd->vcpuid[i] = ia64_get_cpuid(i); | |
1065 | ||
1066 | /* Limit the CPUID number to 5 */ | |
1067 | cpuid3.value = vpd->vcpuid[3]; | |
1068 | cpuid3.number = 4; /* 5 - 1 */ | |
1069 | vpd->vcpuid[3] = cpuid3.value; | |
1070 | ||
1071 | /*Set vac and vdc fields*/ | |
1072 | vpd->vac.a_from_int_cr = 1; | |
1073 | vpd->vac.a_to_int_cr = 1; | |
1074 | vpd->vac.a_from_psr = 1; | |
1075 | vpd->vac.a_from_cpuid = 1; | |
1076 | vpd->vac.a_cover = 1; | |
1077 | vpd->vac.a_bsw = 1; | |
1078 | vpd->vac.a_int = 1; | |
1079 | vpd->vdc.d_vmsw = 1; | |
1080 | ||
1081 | /*Set virtual buffer*/ | |
1082 | vpd->virt_env_vaddr = KVM_VM_BUFFER_BASE; | |
1083 | ||
1084 | return 0; | |
1085 | } | |
1086 | ||
1087 | static int vti_create_vp(struct kvm_vcpu *vcpu) | |
1088 | { | |
1089 | long ret; | |
1090 | struct vpd *vpd = vcpu->arch.vpd; | |
1091 | unsigned long vmm_ivt; | |
1092 | ||
1093 | vmm_ivt = kvm_vmm_info->vmm_ivt; | |
1094 | ||
1095 | printk(KERN_DEBUG "kvm: vcpu:%p,ivt: 0x%lx\n", vcpu, vmm_ivt); | |
1096 | ||
1097 | ret = ia64_pal_vp_create((u64 *)vpd, (u64 *)vmm_ivt, 0); | |
1098 | ||
1099 | if (ret) { | |
1100 | printk(KERN_ERR"kvm: ia64_pal_vp_create failed!\n"); | |
1101 | return -EINVAL; | |
1102 | } | |
1103 | return 0; | |
1104 | } | |
1105 | ||
1106 | static void init_ptce_info(struct kvm_vcpu *vcpu) | |
1107 | { | |
1108 | ia64_ptce_info_t ptce = {0}; | |
1109 | ||
1110 | ia64_get_ptce(&ptce); | |
1111 | vcpu->arch.ptce_base = ptce.base; | |
1112 | vcpu->arch.ptce_count[0] = ptce.count[0]; | |
1113 | vcpu->arch.ptce_count[1] = ptce.count[1]; | |
1114 | vcpu->arch.ptce_stride[0] = ptce.stride[0]; | |
1115 | vcpu->arch.ptce_stride[1] = ptce.stride[1]; | |
1116 | } | |
1117 | ||
1118 | static void kvm_migrate_hlt_timer(struct kvm_vcpu *vcpu) | |
1119 | { | |
1120 | struct hrtimer *p_ht = &vcpu->arch.hlt_timer; | |
1121 | ||
1122 | if (hrtimer_cancel(p_ht)) | |
18dd36af | 1123 | hrtimer_start_expires(p_ht, HRTIMER_MODE_ABS); |
b024b793 XZ |
1124 | } |
1125 | ||
1126 | static enum hrtimer_restart hlt_timer_fn(struct hrtimer *data) | |
1127 | { | |
1128 | struct kvm_vcpu *vcpu; | |
1129 | wait_queue_head_t *q; | |
1130 | ||
1131 | vcpu = container_of(data, struct kvm_vcpu, arch.hlt_timer); | |
decc9016 XZ |
1132 | q = &vcpu->wq; |
1133 | ||
a4535290 | 1134 | if (vcpu->arch.mp_state != KVM_MP_STATE_HALTED) |
b024b793 XZ |
1135 | goto out; |
1136 | ||
decc9016 | 1137 | if (waitqueue_active(q)) |
b024b793 | 1138 | wake_up_interruptible(q); |
decc9016 | 1139 | |
b024b793 | 1140 | out: |
decc9016 | 1141 | vcpu->arch.timer_fired = 1; |
b024b793 XZ |
1142 | vcpu->arch.timer_check = 1; |
1143 | return HRTIMER_NORESTART; | |
1144 | } | |
1145 | ||
1146 | #define PALE_RESET_ENTRY 0x80000000ffffffb0UL | |
1147 | ||
3e515705 AK |
1148 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) |
1149 | { | |
8281715b | 1150 | return irqchip_in_kernel(vcpu->kvm) == (vcpu->arch.apic != NULL); |
3e515705 AK |
1151 | } |
1152 | ||
b024b793 XZ |
1153 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
1154 | { | |
1155 | struct kvm_vcpu *v; | |
1156 | int r; | |
1157 | int i; | |
1158 | long itc_offset; | |
1159 | struct kvm *kvm = vcpu->kvm; | |
1160 | struct kvm_pt_regs *regs = vcpu_regs(vcpu); | |
1161 | ||
1162 | union context *p_ctx = &vcpu->arch.guest; | |
1163 | struct kvm_vcpu *vmm_vcpu = to_guest(vcpu->kvm, vcpu); | |
1164 | ||
1165 | /*Init vcpu context for first run.*/ | |
1166 | if (IS_ERR(vmm_vcpu)) | |
1167 | return PTR_ERR(vmm_vcpu); | |
1168 | ||
c5af89b6 | 1169 | if (kvm_vcpu_is_bsp(vcpu)) { |
a4535290 | 1170 | vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; |
b024b793 XZ |
1171 | |
1172 | /*Set entry address for first run.*/ | |
1173 | regs->cr_iip = PALE_RESET_ENTRY; | |
1174 | ||
a917f7af | 1175 | /*Initialize itc offset for vcpus*/ |
c6c9fcdf | 1176 | itc_offset = 0UL - kvm_get_itc(vcpu); |
3032b925 | 1177 | for (i = 0; i < KVM_MAX_VCPUS; i++) { |
a917f7af XZ |
1178 | v = (struct kvm_vcpu *)((char *)vcpu + |
1179 | sizeof(struct kvm_vcpu_data) * i); | |
b024b793 XZ |
1180 | v->arch.itc_offset = itc_offset; |
1181 | v->arch.last_itc = 0; | |
1182 | } | |
1183 | } else | |
a4535290 | 1184 | vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED; |
b024b793 XZ |
1185 | |
1186 | r = -ENOMEM; | |
1187 | vcpu->arch.apic = kzalloc(sizeof(struct kvm_lapic), GFP_KERNEL); | |
1188 | if (!vcpu->arch.apic) | |
1189 | goto out; | |
1190 | vcpu->arch.apic->vcpu = vcpu; | |
1191 | ||
1192 | p_ctx->gr[1] = 0; | |
a917f7af | 1193 | p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + KVM_STK_OFFSET); |
b024b793 XZ |
1194 | p_ctx->gr[13] = (unsigned long)vmm_vcpu; |
1195 | p_ctx->psr = 0x1008522000UL; | |
1196 | p_ctx->ar[40] = FPSR_DEFAULT; /*fpsr*/ | |
1197 | p_ctx->caller_unat = 0; | |
1198 | p_ctx->pr = 0x0; | |
1199 | p_ctx->ar[36] = 0x0; /*unat*/ | |
1200 | p_ctx->ar[19] = 0x0; /*rnat*/ | |
1201 | p_ctx->ar[18] = (unsigned long)vmm_vcpu + | |
1202 | ((sizeof(struct kvm_vcpu)+15) & ~15); | |
1203 | p_ctx->ar[64] = 0x0; /*pfs*/ | |
1204 | p_ctx->cr[0] = 0x7e04UL; | |
1205 | p_ctx->cr[2] = (unsigned long)kvm_vmm_info->vmm_ivt; | |
1206 | p_ctx->cr[8] = 0x3c; | |
1207 | ||
421f91d2 | 1208 | /*Initialize region register*/ |
b024b793 XZ |
1209 | p_ctx->rr[0] = 0x30; |
1210 | p_ctx->rr[1] = 0x30; | |
1211 | p_ctx->rr[2] = 0x30; | |
1212 | p_ctx->rr[3] = 0x30; | |
1213 | p_ctx->rr[4] = 0x30; | |
1214 | p_ctx->rr[5] = 0x30; | |
1215 | p_ctx->rr[7] = 0x30; | |
1216 | ||
421f91d2 | 1217 | /*Initialize branch register 0*/ |
b024b793 XZ |
1218 | p_ctx->br[0] = *(unsigned long *)kvm_vmm_info->vmm_entry; |
1219 | ||
1220 | vcpu->arch.vmm_rr = kvm->arch.vmm_init_rr; | |
1221 | vcpu->arch.metaphysical_rr0 = kvm->arch.metaphysical_rr0; | |
1222 | vcpu->arch.metaphysical_rr4 = kvm->arch.metaphysical_rr4; | |
1223 | ||
1224 | hrtimer_init(&vcpu->arch.hlt_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
1225 | vcpu->arch.hlt_timer.function = hlt_timer_fn; | |
1226 | ||
1227 | vcpu->arch.last_run_cpu = -1; | |
a917f7af | 1228 | vcpu->arch.vpd = (struct vpd *)VPD_BASE(vcpu->vcpu_id); |
b024b793 XZ |
1229 | vcpu->arch.vsa_base = kvm_vsa_base; |
1230 | vcpu->arch.__gp = kvm_vmm_gp; | |
1231 | vcpu->arch.dirty_log_lock_pa = __pa(&kvm->arch.dirty_log_lock); | |
a917f7af XZ |
1232 | vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_BASE(vcpu->vcpu_id); |
1233 | vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_BASE(vcpu->vcpu_id); | |
b024b793 XZ |
1234 | init_ptce_info(vcpu); |
1235 | ||
1236 | r = 0; | |
1237 | out: | |
1238 | return r; | |
1239 | } | |
1240 | ||
1241 | static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id) | |
1242 | { | |
1243 | unsigned long psr; | |
1244 | int r; | |
1245 | ||
1246 | local_irq_save(psr); | |
1247 | r = kvm_insert_vmm_mapping(vcpu); | |
457459c3 | 1248 | local_irq_restore(psr); |
b024b793 XZ |
1249 | if (r) |
1250 | goto fail; | |
1251 | r = kvm_vcpu_init(vcpu, vcpu->kvm, id); | |
1252 | if (r) | |
1253 | goto fail; | |
1254 | ||
1255 | r = vti_init_vpd(vcpu); | |
1256 | if (r) { | |
1257 | printk(KERN_DEBUG"kvm: vpd init error!!\n"); | |
1258 | goto uninit; | |
1259 | } | |
1260 | ||
1261 | r = vti_create_vp(vcpu); | |
1262 | if (r) | |
1263 | goto uninit; | |
1264 | ||
1265 | kvm_purge_vmm_mapping(vcpu); | |
b024b793 XZ |
1266 | |
1267 | return 0; | |
1268 | uninit: | |
1269 | kvm_vcpu_uninit(vcpu); | |
1270 | fail: | |
1271 | return r; | |
1272 | } | |
1273 | ||
1274 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, | |
1275 | unsigned int id) | |
1276 | { | |
1277 | struct kvm_vcpu *vcpu; | |
1278 | unsigned long vm_base = kvm->arch.vm_base; | |
1279 | int r; | |
1280 | int cpu; | |
1281 | ||
a917f7af XZ |
1282 | BUG_ON(sizeof(struct kvm_vcpu) > VCPU_STRUCT_SIZE/2); |
1283 | ||
1284 | r = -EINVAL; | |
1285 | if (id >= KVM_MAX_VCPUS) { | |
1286 | printk(KERN_ERR"kvm: Can't configure vcpus > %ld", | |
1287 | KVM_MAX_VCPUS); | |
1288 | goto fail; | |
1289 | } | |
1290 | ||
b024b793 XZ |
1291 | r = -ENOMEM; |
1292 | if (!vm_base) { | |
1293 | printk(KERN_ERR"kvm: Create vcpu[%d] error!\n", id); | |
1294 | goto fail; | |
1295 | } | |
a917f7af XZ |
1296 | vcpu = (struct kvm_vcpu *)(vm_base + offsetof(struct kvm_vm_data, |
1297 | vcpu_data[id].vcpu_struct)); | |
b024b793 XZ |
1298 | vcpu->kvm = kvm; |
1299 | ||
1300 | cpu = get_cpu(); | |
b024b793 XZ |
1301 | r = vti_vcpu_setup(vcpu, id); |
1302 | put_cpu(); | |
1303 | ||
1304 | if (r) { | |
1305 | printk(KERN_DEBUG"kvm: vcpu_setup error!!\n"); | |
1306 | goto fail; | |
1307 | } | |
1308 | ||
1309 | return vcpu; | |
1310 | fail: | |
1311 | return ERR_PTR(r); | |
1312 | } | |
1313 | ||
1314 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) | |
1315 | { | |
1316 | return 0; | |
1317 | } | |
1318 | ||
42897d86 MT |
1319 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) |
1320 | { | |
1321 | return 0; | |
1322 | } | |
1323 | ||
b024b793 XZ |
1324 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) |
1325 | { | |
1326 | return -EINVAL; | |
1327 | } | |
1328 | ||
1329 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) | |
1330 | { | |
1331 | return -EINVAL; | |
1332 | } | |
1333 | ||
d0bfb940 JK |
1334 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
1335 | struct kvm_guest_debug *dbg) | |
b024b793 XZ |
1336 | { |
1337 | return -EINVAL; | |
1338 | } | |
1339 | ||
d89f5eff | 1340 | void kvm_arch_free_vm(struct kvm *kvm) |
b024b793 XZ |
1341 | { |
1342 | unsigned long vm_base = kvm->arch.vm_base; | |
1343 | ||
1344 | if (vm_base) { | |
1345 | memset((void *)vm_base, 0, KVM_VM_DATA_SIZE); | |
1346 | free_pages(vm_base, get_order(KVM_VM_DATA_SIZE)); | |
1347 | } | |
1348 | ||
1349 | } | |
1350 | ||
1351 | static void kvm_release_vm_pages(struct kvm *kvm) | |
1352 | { | |
46a26bf5 | 1353 | struct kvm_memslots *slots; |
b024b793 | 1354 | struct kvm_memory_slot *memslot; |
be6ba0f0 | 1355 | int j; |
b024b793 | 1356 | |
90d83dc3 | 1357 | slots = kvm_memslots(kvm); |
be6ba0f0 | 1358 | kvm_for_each_memslot(memslot, slots) { |
b024b793 XZ |
1359 | for (j = 0; j < memslot->npages; j++) { |
1360 | if (memslot->rmap[j]) | |
1361 | put_page((struct page *)memslot->rmap[j]); | |
1362 | } | |
1363 | } | |
1364 | } | |
1365 | ||
ad8ba2cd SY |
1366 | void kvm_arch_sync_events(struct kvm *kvm) |
1367 | { | |
1368 | } | |
1369 | ||
b024b793 XZ |
1370 | void kvm_arch_destroy_vm(struct kvm *kvm) |
1371 | { | |
2381ad24 | 1372 | kvm_iommu_unmap_guest(kvm); |
2381ad24 | 1373 | kvm_free_all_assigned_devices(kvm); |
b024b793 XZ |
1374 | kfree(kvm->arch.vioapic); |
1375 | kvm_release_vm_pages(kvm); | |
b024b793 XZ |
1376 | } |
1377 | ||
1378 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
1379 | { | |
1380 | } | |
1381 | ||
1382 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
1383 | { | |
1384 | if (cpu != vcpu->cpu) { | |
1385 | vcpu->cpu = cpu; | |
1386 | if (vcpu->arch.ht_active) | |
1387 | kvm_migrate_hlt_timer(vcpu); | |
1388 | } | |
1389 | } | |
1390 | ||
1391 | #define SAVE_REGS(_x) regs->_x = vcpu->arch._x | |
1392 | ||
1393 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) | |
1394 | { | |
b024b793 | 1395 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); |
042b26ed JS |
1396 | int i; |
1397 | ||
b024b793 XZ |
1398 | vcpu_load(vcpu); |
1399 | ||
1400 | for (i = 0; i < 16; i++) { | |
1401 | regs->vpd.vgr[i] = vpd->vgr[i]; | |
1402 | regs->vpd.vbgr[i] = vpd->vbgr[i]; | |
1403 | } | |
1404 | for (i = 0; i < 128; i++) | |
1405 | regs->vpd.vcr[i] = vpd->vcr[i]; | |
1406 | regs->vpd.vhpi = vpd->vhpi; | |
1407 | regs->vpd.vnat = vpd->vnat; | |
1408 | regs->vpd.vbnat = vpd->vbnat; | |
1409 | regs->vpd.vpsr = vpd->vpsr; | |
1410 | regs->vpd.vpr = vpd->vpr; | |
1411 | ||
042b26ed JS |
1412 | memcpy(®s->saved_guest, &vcpu->arch.guest, sizeof(union context)); |
1413 | ||
b024b793 XZ |
1414 | SAVE_REGS(mp_state); |
1415 | SAVE_REGS(vmm_rr); | |
1416 | memcpy(regs->itrs, vcpu->arch.itrs, sizeof(struct thash_data) * NITRS); | |
1417 | memcpy(regs->dtrs, vcpu->arch.dtrs, sizeof(struct thash_data) * NDTRS); | |
1418 | SAVE_REGS(itr_regions); | |
1419 | SAVE_REGS(dtr_regions); | |
1420 | SAVE_REGS(tc_regions); | |
1421 | SAVE_REGS(irq_check); | |
1422 | SAVE_REGS(itc_check); | |
1423 | SAVE_REGS(timer_check); | |
1424 | SAVE_REGS(timer_pending); | |
1425 | SAVE_REGS(last_itc); | |
1426 | for (i = 0; i < 8; i++) { | |
1427 | regs->vrr[i] = vcpu->arch.vrr[i]; | |
1428 | regs->ibr[i] = vcpu->arch.ibr[i]; | |
1429 | regs->dbr[i] = vcpu->arch.dbr[i]; | |
1430 | } | |
1431 | for (i = 0; i < 4; i++) | |
1432 | regs->insvc[i] = vcpu->arch.insvc[i]; | |
c6c9fcdf | 1433 | regs->saved_itc = vcpu->arch.itc_offset + kvm_get_itc(vcpu); |
b024b793 XZ |
1434 | SAVE_REGS(xtp); |
1435 | SAVE_REGS(metaphysical_rr0); | |
1436 | SAVE_REGS(metaphysical_rr4); | |
1437 | SAVE_REGS(metaphysical_saved_rr0); | |
1438 | SAVE_REGS(metaphysical_saved_rr4); | |
1439 | SAVE_REGS(fp_psr); | |
1440 | SAVE_REGS(saved_gp); | |
042b26ed | 1441 | |
b024b793 | 1442 | vcpu_put(vcpu); |
042b26ed | 1443 | return 0; |
b024b793 XZ |
1444 | } |
1445 | ||
e9a999fe JS |
1446 | int kvm_arch_vcpu_ioctl_get_stack(struct kvm_vcpu *vcpu, |
1447 | struct kvm_ia64_vcpu_stack *stack) | |
1448 | { | |
1449 | memcpy(stack, vcpu, sizeof(struct kvm_ia64_vcpu_stack)); | |
1450 | return 0; | |
1451 | } | |
1452 | ||
1453 | int kvm_arch_vcpu_ioctl_set_stack(struct kvm_vcpu *vcpu, | |
1454 | struct kvm_ia64_vcpu_stack *stack) | |
1455 | { | |
1456 | memcpy(vcpu + 1, &stack->stack[0] + sizeof(struct kvm_vcpu), | |
1457 | sizeof(struct kvm_ia64_vcpu_stack) - sizeof(struct kvm_vcpu)); | |
1458 | ||
1459 | vcpu->arch.exit_data = ((struct kvm_vcpu *)stack)->arch.exit_data; | |
1460 | return 0; | |
1461 | } | |
1462 | ||
b024b793 XZ |
1463 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) |
1464 | { | |
1465 | ||
1466 | hrtimer_cancel(&vcpu->arch.hlt_timer); | |
1467 | kfree(vcpu->arch.apic); | |
1468 | } | |
1469 | ||
1470 | ||
1471 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
e9a999fe | 1472 | unsigned int ioctl, unsigned long arg) |
b024b793 | 1473 | { |
e9a999fe JS |
1474 | struct kvm_vcpu *vcpu = filp->private_data; |
1475 | void __user *argp = (void __user *)arg; | |
1476 | struct kvm_ia64_vcpu_stack *stack = NULL; | |
1477 | long r; | |
1478 | ||
1479 | switch (ioctl) { | |
1480 | case KVM_IA64_VCPU_GET_STACK: { | |
1481 | struct kvm_ia64_vcpu_stack __user *user_stack; | |
1482 | void __user *first_p = argp; | |
1483 | ||
1484 | r = -EFAULT; | |
1485 | if (copy_from_user(&user_stack, first_p, sizeof(void *))) | |
1486 | goto out; | |
1487 | ||
1488 | if (!access_ok(VERIFY_WRITE, user_stack, | |
1489 | sizeof(struct kvm_ia64_vcpu_stack))) { | |
1490 | printk(KERN_INFO "KVM_IA64_VCPU_GET_STACK: " | |
1491 | "Illegal user destination address for stack\n"); | |
1492 | goto out; | |
1493 | } | |
1494 | stack = kzalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL); | |
1495 | if (!stack) { | |
1496 | r = -ENOMEM; | |
1497 | goto out; | |
1498 | } | |
1499 | ||
1500 | r = kvm_arch_vcpu_ioctl_get_stack(vcpu, stack); | |
1501 | if (r) | |
1502 | goto out; | |
1503 | ||
1504 | if (copy_to_user(user_stack, stack, | |
5c0d0920 WY |
1505 | sizeof(struct kvm_ia64_vcpu_stack))) { |
1506 | r = -EFAULT; | |
e9a999fe | 1507 | goto out; |
5c0d0920 | 1508 | } |
e9a999fe JS |
1509 | |
1510 | break; | |
1511 | } | |
1512 | case KVM_IA64_VCPU_SET_STACK: { | |
1513 | struct kvm_ia64_vcpu_stack __user *user_stack; | |
1514 | void __user *first_p = argp; | |
1515 | ||
1516 | r = -EFAULT; | |
1517 | if (copy_from_user(&user_stack, first_p, sizeof(void *))) | |
1518 | goto out; | |
1519 | ||
1520 | if (!access_ok(VERIFY_READ, user_stack, | |
1521 | sizeof(struct kvm_ia64_vcpu_stack))) { | |
1522 | printk(KERN_INFO "KVM_IA64_VCPU_SET_STACK: " | |
1523 | "Illegal user address for stack\n"); | |
1524 | goto out; | |
1525 | } | |
1526 | stack = kmalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL); | |
1527 | if (!stack) { | |
1528 | r = -ENOMEM; | |
1529 | goto out; | |
1530 | } | |
1531 | if (copy_from_user(stack, user_stack, | |
1532 | sizeof(struct kvm_ia64_vcpu_stack))) | |
1533 | goto out; | |
1534 | ||
1535 | r = kvm_arch_vcpu_ioctl_set_stack(vcpu, stack); | |
1536 | break; | |
1537 | } | |
1538 | ||
1539 | default: | |
1540 | r = -EINVAL; | |
1541 | } | |
1542 | ||
1543 | out: | |
1544 | kfree(stack); | |
1545 | return r; | |
b024b793 XZ |
1546 | } |
1547 | ||
5b1c1493 CO |
1548 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
1549 | { | |
1550 | return VM_FAULT_SIGBUS; | |
1551 | } | |
1552 | ||
db3fe4eb TY |
1553 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
1554 | struct kvm_memory_slot *dont) | |
1555 | { | |
1556 | } | |
1557 | ||
1558 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages) | |
1559 | { | |
1560 | return 0; | |
1561 | } | |
1562 | ||
e59dbe09 TY |
1563 | void kvm_arch_memslots_updated(struct kvm *kvm) |
1564 | { | |
1565 | } | |
1566 | ||
f7784b8e MT |
1567 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
1568 | struct kvm_memory_slot *memslot, | |
7b6195a9 TY |
1569 | struct kvm_userspace_memory_region *mem, |
1570 | enum kvm_mr_change change) | |
b024b793 XZ |
1571 | { |
1572 | unsigned long i; | |
1cbea809 | 1573 | unsigned long pfn; |
f7784b8e | 1574 | int npages = memslot->npages; |
b024b793 XZ |
1575 | unsigned long base_gfn = memslot->base_gfn; |
1576 | ||
a917f7af XZ |
1577 | if (base_gfn + npages > (KVM_MAX_MEM_SIZE >> PAGE_SHIFT)) |
1578 | return -ENOMEM; | |
1579 | ||
b024b793 | 1580 | for (i = 0; i < npages; i++) { |
1cbea809 XZ |
1581 | pfn = gfn_to_pfn(kvm, base_gfn + i); |
1582 | if (!kvm_is_mmio_pfn(pfn)) { | |
1583 | kvm_set_pmt_entry(kvm, base_gfn + i, | |
1584 | pfn << PAGE_SHIFT, | |
b010eb51 | 1585 | _PAGE_AR_RWX | _PAGE_MA_WB); |
1cbea809 XZ |
1586 | memslot->rmap[i] = (unsigned long)pfn_to_page(pfn); |
1587 | } else { | |
1588 | kvm_set_pmt_entry(kvm, base_gfn + i, | |
b010eb51 | 1589 | GPFN_PHYS_MMIO | (pfn << PAGE_SHIFT), |
1cbea809 XZ |
1590 | _PAGE_MA_UC); |
1591 | memslot->rmap[i] = 0; | |
1592 | } | |
b024b793 XZ |
1593 | } |
1594 | ||
1595 | return 0; | |
1596 | } | |
1597 | ||
f7784b8e MT |
1598 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
1599 | struct kvm_userspace_memory_region *mem, | |
8482644a TY |
1600 | const struct kvm_memory_slot *old, |
1601 | enum kvm_mr_change change) | |
f7784b8e MT |
1602 | { |
1603 | return; | |
1604 | } | |
1605 | ||
2df72e9b | 1606 | void kvm_arch_flush_shadow_all(struct kvm *kvm) |
34d4cb8f | 1607 | { |
64f6afbd | 1608 | kvm_flush_remote_tlbs(kvm); |
34d4cb8f | 1609 | } |
b024b793 | 1610 | |
2df72e9b MT |
1611 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, |
1612 | struct kvm_memory_slot *slot) | |
1613 | { | |
1614 | kvm_arch_flush_shadow_all(); | |
1615 | } | |
1616 | ||
b024b793 | 1617 | long kvm_arch_dev_ioctl(struct file *filp, |
e9a999fe | 1618 | unsigned int ioctl, unsigned long arg) |
b024b793 XZ |
1619 | { |
1620 | return -EINVAL; | |
1621 | } | |
1622 | ||
1623 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
1624 | { | |
1625 | kvm_vcpu_uninit(vcpu); | |
1626 | } | |
1627 | ||
1628 | static int vti_cpu_has_kvm_support(void) | |
1629 | { | |
1630 | long avail = 1, status = 1, control = 1; | |
1631 | long ret; | |
1632 | ||
1633 | ret = ia64_pal_proc_get_features(&avail, &status, &control, 0); | |
1634 | if (ret) | |
1635 | goto out; | |
1636 | ||
1637 | if (!(avail & PAL_PROC_VM_BIT)) | |
1638 | goto out; | |
1639 | ||
1640 | printk(KERN_DEBUG"kvm: Hardware Supports VT\n"); | |
1641 | ||
1642 | ret = ia64_pal_vp_env_info(&kvm_vm_buffer_size, &vp_env_info); | |
1643 | if (ret) | |
1644 | goto out; | |
1645 | printk(KERN_DEBUG"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size); | |
1646 | ||
1647 | if (!(vp_env_info & VP_OPCODE)) { | |
1648 | printk(KERN_WARNING"kvm: No opcode ability on hardware, " | |
1649 | "vm_env_info:0x%lx\n", vp_env_info); | |
1650 | } | |
1651 | ||
1652 | return 1; | |
1653 | out: | |
1654 | return 0; | |
1655 | } | |
1656 | ||
0b5d7a2c JS |
1657 | |
1658 | /* | |
1659 | * On SN2, the ITC isn't stable, so copy in fast path code to use the | |
1660 | * SN2 RTC, replacing the ITC based default verion. | |
1661 | */ | |
1662 | static void kvm_patch_vmm(struct kvm_vmm_info *vmm_info, | |
1663 | struct module *module) | |
1664 | { | |
1665 | unsigned long new_ar, new_ar_sn2; | |
1666 | unsigned long module_base; | |
1667 | ||
1668 | if (!ia64_platform_is("sn2")) | |
1669 | return; | |
1670 | ||
1671 | module_base = (unsigned long)module->module_core; | |
1672 | ||
1673 | new_ar = kvm_vmm_base + vmm_info->patch_mov_ar - module_base; | |
1674 | new_ar_sn2 = kvm_vmm_base + vmm_info->patch_mov_ar_sn2 - module_base; | |
1675 | ||
1676 | printk(KERN_INFO "kvm: Patching ITC emulation to use SGI SN2 RTC " | |
1677 | "as source\n"); | |
1678 | ||
1679 | /* | |
1680 | * Copy the SN2 version of mov_ar into place. They are both | |
1681 | * the same size, so 6 bundles is sufficient (6 * 0x10). | |
1682 | */ | |
1683 | memcpy((void *)new_ar, (void *)new_ar_sn2, 0x60); | |
1684 | } | |
1685 | ||
b024b793 | 1686 | static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info, |
0b5d7a2c | 1687 | struct module *module) |
b024b793 XZ |
1688 | { |
1689 | unsigned long module_base; | |
1690 | unsigned long vmm_size; | |
1691 | ||
1692 | unsigned long vmm_offset, func_offset, fdesc_offset; | |
1693 | struct fdesc *p_fdesc; | |
1694 | ||
1695 | BUG_ON(!module); | |
1696 | ||
1697 | if (!kvm_vmm_base) { | |
421f91d2 | 1698 | printk("kvm: kvm area hasn't been initialized yet!!\n"); |
b024b793 XZ |
1699 | return -EFAULT; |
1700 | } | |
1701 | ||
1702 | /*Calculate new position of relocated vmm module.*/ | |
1703 | module_base = (unsigned long)module->module_core; | |
1704 | vmm_size = module->core_size; | |
1705 | if (unlikely(vmm_size > KVM_VMM_SIZE)) | |
1706 | return -EFAULT; | |
1707 | ||
1708 | memcpy((void *)kvm_vmm_base, (void *)module_base, vmm_size); | |
0b5d7a2c | 1709 | kvm_patch_vmm(vmm_info, module); |
b024b793 XZ |
1710 | kvm_flush_icache(kvm_vmm_base, vmm_size); |
1711 | ||
1712 | /*Recalculate kvm_vmm_info based on new VMM*/ | |
1713 | vmm_offset = vmm_info->vmm_ivt - module_base; | |
1714 | kvm_vmm_info->vmm_ivt = KVM_VMM_BASE + vmm_offset; | |
1715 | printk(KERN_DEBUG"kvm: Relocated VMM's IVT Base Addr:%lx\n", | |
1716 | kvm_vmm_info->vmm_ivt); | |
1717 | ||
1718 | fdesc_offset = (unsigned long)vmm_info->vmm_entry - module_base; | |
1719 | kvm_vmm_info->vmm_entry = (kvm_vmm_entry *)(KVM_VMM_BASE + | |
1720 | fdesc_offset); | |
1721 | func_offset = *(unsigned long *)vmm_info->vmm_entry - module_base; | |
1722 | p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset); | |
1723 | p_fdesc->ip = KVM_VMM_BASE + func_offset; | |
1724 | p_fdesc->gp = KVM_VMM_BASE+(p_fdesc->gp - module_base); | |
1725 | ||
1726 | printk(KERN_DEBUG"kvm: Relocated VMM's Init Entry Addr:%lx\n", | |
1727 | KVM_VMM_BASE+func_offset); | |
1728 | ||
1729 | fdesc_offset = (unsigned long)vmm_info->tramp_entry - module_base; | |
1730 | kvm_vmm_info->tramp_entry = (kvm_tramp_entry *)(KVM_VMM_BASE + | |
1731 | fdesc_offset); | |
1732 | func_offset = *(unsigned long *)vmm_info->tramp_entry - module_base; | |
1733 | p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset); | |
1734 | p_fdesc->ip = KVM_VMM_BASE + func_offset; | |
1735 | p_fdesc->gp = KVM_VMM_BASE + (p_fdesc->gp - module_base); | |
1736 | ||
1737 | kvm_vmm_gp = p_fdesc->gp; | |
1738 | ||
1739 | printk(KERN_DEBUG"kvm: Relocated VMM's Entry IP:%p\n", | |
1740 | kvm_vmm_info->vmm_entry); | |
1741 | printk(KERN_DEBUG"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n", | |
1742 | KVM_VMM_BASE + func_offset); | |
1743 | ||
1744 | return 0; | |
1745 | } | |
1746 | ||
1747 | int kvm_arch_init(void *opaque) | |
1748 | { | |
1749 | int r; | |
1750 | struct kvm_vmm_info *vmm_info = (struct kvm_vmm_info *)opaque; | |
1751 | ||
1752 | if (!vti_cpu_has_kvm_support()) { | |
1753 | printk(KERN_ERR "kvm: No Hardware Virtualization Support!\n"); | |
1754 | r = -EOPNOTSUPP; | |
1755 | goto out; | |
1756 | } | |
1757 | ||
1758 | if (kvm_vmm_info) { | |
1759 | printk(KERN_ERR "kvm: Already loaded VMM module!\n"); | |
1760 | r = -EEXIST; | |
1761 | goto out; | |
1762 | } | |
1763 | ||
1764 | r = -ENOMEM; | |
1765 | kvm_vmm_info = kzalloc(sizeof(struct kvm_vmm_info), GFP_KERNEL); | |
1766 | if (!kvm_vmm_info) | |
1767 | goto out; | |
1768 | ||
1769 | if (kvm_alloc_vmm_area()) | |
1770 | goto out_free0; | |
1771 | ||
1772 | r = kvm_relocate_vmm(vmm_info, vmm_info->module); | |
1773 | if (r) | |
1774 | goto out_free1; | |
1775 | ||
1776 | return 0; | |
1777 | ||
1778 | out_free1: | |
1779 | kvm_free_vmm_area(); | |
1780 | out_free0: | |
1781 | kfree(kvm_vmm_info); | |
1782 | out: | |
1783 | return r; | |
1784 | } | |
1785 | ||
1786 | void kvm_arch_exit(void) | |
1787 | { | |
1788 | kvm_free_vmm_area(); | |
1789 | kfree(kvm_vmm_info); | |
1790 | kvm_vmm_info = NULL; | |
1791 | } | |
1792 | ||
979586e0 TY |
1793 | static void kvm_ia64_sync_dirty_log(struct kvm *kvm, |
1794 | struct kvm_memory_slot *memslot) | |
b024b793 | 1795 | { |
979586e0 | 1796 | int i; |
87bf6e7d TY |
1797 | long base; |
1798 | unsigned long n; | |
a917f7af XZ |
1799 | unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base + |
1800 | offsetof(struct kvm_vm_data, kvm_mem_dirty_log)); | |
b024b793 | 1801 | |
87bf6e7d | 1802 | n = kvm_dirty_bitmap_bytes(memslot); |
b024b793 XZ |
1803 | base = memslot->base_gfn / BITS_PER_LONG; |
1804 | ||
4482b06c | 1805 | spin_lock(&kvm->arch.dirty_log_lock); |
b024b793 XZ |
1806 | for (i = 0; i < n/sizeof(long); ++i) { |
1807 | memslot->dirty_bitmap[i] = dirty_bitmap[base + i]; | |
1808 | dirty_bitmap[base + i] = 0; | |
1809 | } | |
4482b06c | 1810 | spin_unlock(&kvm->arch.dirty_log_lock); |
b024b793 XZ |
1811 | } |
1812 | ||
1813 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
1814 | struct kvm_dirty_log *log) | |
1815 | { | |
1816 | int r; | |
87bf6e7d | 1817 | unsigned long n; |
b024b793 XZ |
1818 | struct kvm_memory_slot *memslot; |
1819 | int is_dirty = 0; | |
1820 | ||
79fac95e | 1821 | mutex_lock(&kvm->slots_lock); |
b024b793 | 1822 | |
979586e0 | 1823 | r = -EINVAL; |
bbacc0c1 | 1824 | if (log->slot >= KVM_USER_MEM_SLOTS) |
979586e0 TY |
1825 | goto out; |
1826 | ||
28a37544 | 1827 | memslot = id_to_memslot(kvm->memslots, log->slot); |
979586e0 TY |
1828 | r = -ENOENT; |
1829 | if (!memslot->dirty_bitmap) | |
b024b793 XZ |
1830 | goto out; |
1831 | ||
979586e0 | 1832 | kvm_ia64_sync_dirty_log(kvm, memslot); |
b024b793 XZ |
1833 | r = kvm_get_dirty_log(kvm, log, &is_dirty); |
1834 | if (r) | |
1835 | goto out; | |
1836 | ||
1837 | /* If nothing is dirty, don't bother messing with page tables. */ | |
1838 | if (is_dirty) { | |
1839 | kvm_flush_remote_tlbs(kvm); | |
87bf6e7d | 1840 | n = kvm_dirty_bitmap_bytes(memslot); |
b024b793 XZ |
1841 | memset(memslot->dirty_bitmap, 0, n); |
1842 | } | |
1843 | r = 0; | |
1844 | out: | |
79fac95e | 1845 | mutex_unlock(&kvm->slots_lock); |
b024b793 XZ |
1846 | return r; |
1847 | } | |
1848 | ||
1849 | int kvm_arch_hardware_setup(void) | |
1850 | { | |
1851 | return 0; | |
1852 | } | |
1853 | ||
1854 | void kvm_arch_hardware_unsetup(void) | |
1855 | { | |
1856 | } | |
1857 | ||
58c2dde1 | 1858 | int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq) |
b024b793 | 1859 | { |
58c2dde1 | 1860 | return __apic_accept_irq(vcpu, irq->vector); |
b024b793 XZ |
1861 | } |
1862 | ||
1863 | int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest) | |
1864 | { | |
1865 | return apic->vcpu->vcpu_id == dest; | |
1866 | } | |
1867 | ||
1868 | int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda) | |
1869 | { | |
1870 | return 0; | |
1871 | } | |
1872 | ||
e1035715 | 1873 | int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2) |
b024b793 | 1874 | { |
e1035715 | 1875 | return vcpu1->arch.xtp - vcpu2->arch.xtp; |
b024b793 XZ |
1876 | } |
1877 | ||
343f94fe GN |
1878 | int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source, |
1879 | int short_hand, int dest, int dest_mode) | |
1880 | { | |
58c2dde1 | 1881 | struct kvm_lapic *target = vcpu->arch.apic; |
343f94fe GN |
1882 | return (dest_mode == 0) ? |
1883 | kvm_apic_match_physical_addr(target, dest) : | |
1884 | kvm_apic_match_logical_addr(target, dest); | |
1885 | } | |
1886 | ||
b024b793 XZ |
1887 | static int find_highest_bits(int *dat) |
1888 | { | |
1889 | u32 bits, bitnum; | |
1890 | int i; | |
1891 | ||
1892 | /* loop for all 256 bits */ | |
1893 | for (i = 7; i >= 0 ; i--) { | |
1894 | bits = dat[i]; | |
1895 | if (bits) { | |
1896 | bitnum = fls(bits); | |
1897 | return i * 32 + bitnum - 1; | |
1898 | } | |
1899 | } | |
1900 | ||
1901 | return -1; | |
1902 | } | |
1903 | ||
1904 | int kvm_highest_pending_irq(struct kvm_vcpu *vcpu) | |
1905 | { | |
1906 | struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd); | |
1907 | ||
1908 | if (vpd->irr[0] & (1UL << NMI_VECTOR)) | |
1909 | return NMI_VECTOR; | |
1910 | if (vpd->irr[0] & (1UL << ExtINT_VECTOR)) | |
1911 | return ExtINT_VECTOR; | |
1912 | ||
1913 | return find_highest_bits((int *)&vpd->irr[0]); | |
1914 | } | |
1915 | ||
3d80840d MT |
1916 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) |
1917 | { | |
decc9016 | 1918 | return vcpu->arch.timer_fired; |
3d80840d MT |
1919 | } |
1920 | ||
b024b793 XZ |
1921 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu) |
1922 | { | |
a1b37100 GN |
1923 | return (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE) || |
1924 | (kvm_highest_pending_irq(vcpu) != -1); | |
b024b793 | 1925 | } |
62d9f0db | 1926 | |
b6d33834 CD |
1927 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) |
1928 | { | |
1929 | return (!test_and_set_bit(KVM_REQ_KICK, &vcpu->requests)); | |
1930 | } | |
1931 | ||
62d9f0db MT |
1932 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
1933 | struct kvm_mp_state *mp_state) | |
1934 | { | |
8c4b537d | 1935 | mp_state->mp_state = vcpu->arch.mp_state; |
8c4b537d XZ |
1936 | return 0; |
1937 | } | |
1938 | ||
1939 | static int vcpu_reset(struct kvm_vcpu *vcpu) | |
1940 | { | |
1941 | int r; | |
1942 | long psr; | |
1943 | local_irq_save(psr); | |
1944 | r = kvm_insert_vmm_mapping(vcpu); | |
43890ae8 | 1945 | local_irq_restore(psr); |
8c4b537d XZ |
1946 | if (r) |
1947 | goto fail; | |
1948 | ||
1949 | vcpu->arch.launched = 0; | |
1950 | kvm_arch_vcpu_uninit(vcpu); | |
1951 | r = kvm_arch_vcpu_init(vcpu); | |
1952 | if (r) | |
1953 | goto fail; | |
1954 | ||
1955 | kvm_purge_vmm_mapping(vcpu); | |
1956 | r = 0; | |
1957 | fail: | |
8c4b537d | 1958 | return r; |
62d9f0db MT |
1959 | } |
1960 | ||
1961 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
1962 | struct kvm_mp_state *mp_state) | |
1963 | { | |
8c4b537d XZ |
1964 | int r = 0; |
1965 | ||
8c4b537d XZ |
1966 | vcpu->arch.mp_state = mp_state->mp_state; |
1967 | if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED) | |
1968 | r = vcpu_reset(vcpu); | |
8c4b537d | 1969 | return r; |
62d9f0db | 1970 | } |