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25#include <linux/module.h>
26#include <linux/cpu.h>
27#include <linux/bootmem.h>
28#include <linux/mm.h>
29#include <linux/highmem.h>
30#include <linux/sched.h>
31#include <asm/vmi.h>
32#include <asm/io.h>
33#include <asm/fixmap.h>
34#include <asm/apicdef.h>
35#include <asm/apic.h>
36#include <asm/processor.h>
37#include <asm/timer.h>
38#include <asm/vmi_time.h>
39#include <asm/kmap_types.h>
40#include <asm/setup.h>
41
42
43typedef u32 __attribute__((regparm(1))) (VROMFUNC)(void);
44typedef u64 __attribute__((regparm(2))) (VROMLONGFUNC)(int);
45
46#define call_vrom_func(rom,func) \
47 (((VROMFUNC *)(rom->func))())
48
49#define call_vrom_long_func(rom,func,arg) \
50 (((VROMLONGFUNC *)(rom->func)) (arg))
51
52static struct vrom_header *vmi_rom;
53static int disable_pge;
54static int disable_pse;
55static int disable_sep;
56static int disable_tsc;
57static int disable_mtrr;
58static int disable_noidle;
59static int disable_vmi_timer;
60
61
62static struct {
63 void (*cpuid)(void );
64 void (*_set_ldt)(u32 selector);
65 void (*set_tr)(u32 selector);
66 void (*write_idt_entry)(struct desc_struct *, int, u32, u32);
67 void (*write_gdt_entry)(struct desc_struct *, int, u32, u32);
68 void (*write_ldt_entry)(struct desc_struct *, int, u32, u32);
69 void (*set_kernel_stack)(u32 selector, u32 sp0);
70 void (*allocate_page)(u32, u32, u32, u32, u32);
71 void (*release_page)(u32, u32);
72 void (*set_pte)(pte_t, pte_t *, unsigned);
73 void (*update_pte)(pte_t *, unsigned);
74 void (*set_linear_mapping)(int, void *, u32, u32);
75 void (*_flush_tlb)(int);
76 void (*set_initial_ap_state)(int, int);
77 void (*halt)(void);
78 void (*set_lazy_mode)(int mode);
79} vmi_ops;
80
81
82struct vmi_timer_ops vmi_timer_ops;
83
84
85
86
87#define MNEM_CALL 0xe8
88#define MNEM_JMP 0xe9
89#define MNEM_RET 0xc3
90
91#define IRQ_PATCH_INT_MASK 0
92#define IRQ_PATCH_DISABLE 5
93
94static inline void patch_offset(void *insnbuf,
95 unsigned long ip, unsigned long dest)
96{
97 *(unsigned long *)(insnbuf+1) = dest-ip-5;
98}
99
100static unsigned patch_internal(int call, unsigned len, void *insnbuf,
101 unsigned long ip)
102{
103 u64 reloc;
104 struct vmi_relocation_info *const rel = (struct vmi_relocation_info *)&reloc;
105 reloc = call_vrom_long_func(vmi_rom, get_reloc, call);
106 switch(rel->type) {
107 case VMI_RELOCATION_CALL_REL:
108 BUG_ON(len < 5);
109 *(char *)insnbuf = MNEM_CALL;
110 patch_offset(insnbuf, ip, (unsigned long)rel->eip);
111 return 5;
112
113 case VMI_RELOCATION_JUMP_REL:
114 BUG_ON(len < 5);
115 *(char *)insnbuf = MNEM_JMP;
116 patch_offset(insnbuf, ip, (unsigned long)rel->eip);
117 return 5;
118
119 case VMI_RELOCATION_NOP:
120
121 return 0;
122
123 case VMI_RELOCATION_NONE:
124
125 break;
126
127 default:
128 BUG();
129 }
130 return len;
131}
132
133
134
135
136
137static unsigned vmi_patch(u8 type, u16 clobbers, void *insns,
138 unsigned long ip, unsigned len)
139{
140 switch (type) {
141 case PARAVIRT_PATCH(pv_irq_ops.irq_disable):
142 return patch_internal(VMI_CALL_DisableInterrupts, len,
143 insns, ip);
144 case PARAVIRT_PATCH(pv_irq_ops.irq_enable):
145 return patch_internal(VMI_CALL_EnableInterrupts, len,
146 insns, ip);
147 case PARAVIRT_PATCH(pv_irq_ops.restore_fl):
148 return patch_internal(VMI_CALL_SetInterruptMask, len,
149 insns, ip);
150 case PARAVIRT_PATCH(pv_irq_ops.save_fl):
151 return patch_internal(VMI_CALL_GetInterruptMask, len,
152 insns, ip);
153 case PARAVIRT_PATCH(pv_cpu_ops.iret):
154 return patch_internal(VMI_CALL_IRET, len, insns, ip);
155 case PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit):
156 return patch_internal(VMI_CALL_SYSEXIT, len, insns, ip);
157 default:
158 break;
159 }
160 return len;
161}
162
163
164static void vmi_cpuid(unsigned int *ax, unsigned int *bx,
165 unsigned int *cx, unsigned int *dx)
166{
167 int override = 0;
168 if (*ax == 1)
169 override = 1;
170 asm volatile ("call *%6"
171 : "=a" (*ax),
172 "=b" (*bx),
173 "=c" (*cx),
174 "=d" (*dx)
175 : "0" (*ax), "2" (*cx), "r" (vmi_ops.cpuid));
176 if (override) {
177 if (disable_pse)
178 *dx &= ~X86_FEATURE_PSE;
179 if (disable_pge)
180 *dx &= ~X86_FEATURE_PGE;
181 if (disable_sep)
182 *dx &= ~X86_FEATURE_SEP;
183 if (disable_tsc)
184 *dx &= ~X86_FEATURE_TSC;
185 if (disable_mtrr)
186 *dx &= ~X86_FEATURE_MTRR;
187 }
188}
189
190static inline void vmi_maybe_load_tls(struct desc_struct *gdt, int nr, struct desc_struct *new)
191{
192 if (gdt[nr].a != new->a || gdt[nr].b != new->b)
193 write_gdt_entry(gdt, nr, new, 0);
194}
195
196static void vmi_load_tls(struct thread_struct *t, unsigned int cpu)
197{
198 struct desc_struct *gdt = get_cpu_gdt_table(cpu);
199 vmi_maybe_load_tls(gdt, GDT_ENTRY_TLS_MIN + 0, &t->tls_array[0]);
200 vmi_maybe_load_tls(gdt, GDT_ENTRY_TLS_MIN + 1, &t->tls_array[1]);
201 vmi_maybe_load_tls(gdt, GDT_ENTRY_TLS_MIN + 2, &t->tls_array[2]);
202}
203
204static void vmi_set_ldt(const void *addr, unsigned entries)
205{
206 unsigned cpu = smp_processor_id();
207 struct desc_struct desc;
208
209 pack_descriptor(&desc, (unsigned long)addr,
210 entries * sizeof(struct desc_struct) - 1,
211 DESC_LDT, 0);
212 write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_LDT, &desc, DESC_LDT);
213 vmi_ops._set_ldt(entries ? GDT_ENTRY_LDT*sizeof(struct desc_struct) : 0);
214}
215
216static void vmi_set_tr(void)
217{
218 vmi_ops.set_tr(GDT_ENTRY_TSS*sizeof(struct desc_struct));
219}
220
221static void vmi_write_idt_entry(gate_desc *dt, int entry, const gate_desc *g)
222{
223 u32 *idt_entry = (u32 *)g;
224 vmi_ops.write_idt_entry(dt, entry, idt_entry[0], idt_entry[1]);
225}
226
227static void vmi_write_gdt_entry(struct desc_struct *dt, int entry,
228 const void *desc, int type)
229{
230 u32 *gdt_entry = (u32 *)desc;
231 vmi_ops.write_gdt_entry(dt, entry, gdt_entry[0], gdt_entry[1]);
232}
233
234static void vmi_write_ldt_entry(struct desc_struct *dt, int entry,
235 const void *desc)
236{
237 u32 *ldt_entry = (u32 *)desc;
238 vmi_ops.write_ldt_entry(dt, entry, ldt_entry[0], ldt_entry[1]);
239}
240
241static void vmi_load_sp0(struct tss_struct *tss,
242 struct thread_struct *thread)
243{
244 tss->x86_tss.sp0 = thread->sp0;
245
246
247 if (unlikely(tss->x86_tss.ss1 != thread->sysenter_cs)) {
248 tss->x86_tss.ss1 = thread->sysenter_cs;
249 wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0);
250 }
251 vmi_ops.set_kernel_stack(__KERNEL_DS, tss->x86_tss.sp0);
252}
253
254static void vmi_flush_tlb_user(void)
255{
256 vmi_ops._flush_tlb(VMI_FLUSH_TLB);
257}
258
259static void vmi_flush_tlb_kernel(void)
260{
261 vmi_ops._flush_tlb(VMI_FLUSH_TLB | VMI_FLUSH_GLOBAL);
262}
263
264
265static void vmi_nop(void)
266{
267}
268
269#ifdef CONFIG_HIGHPTE
270static void *vmi_kmap_atomic_pte(struct page *page, enum km_type type)
271{
272 void *va = kmap_atomic(page, type);
273
274
275
276
277
278
279
280
281
282
283
284
285
286 BUG_ON(type != KM_PTE0 && type != KM_PTE1);
287 vmi_ops.set_linear_mapping((type - KM_PTE0)+1, va, 1, page_to_pfn(page));
288
289 return va;
290}
291#endif
292
293static void vmi_allocate_pte(struct mm_struct *mm, unsigned long pfn)
294{
295 vmi_ops.allocate_page(pfn, VMI_PAGE_L1, 0, 0, 0);
296}
297
298static void vmi_allocate_pmd(struct mm_struct *mm, unsigned long pfn)
299{
300
301
302
303
304
305 vmi_ops.allocate_page(pfn, VMI_PAGE_L2, 0, 0, 0);
306}
307
308static void vmi_allocate_pmd_clone(unsigned long pfn, unsigned long clonepfn, unsigned long start, unsigned long count)
309{
310 vmi_ops.allocate_page(pfn, VMI_PAGE_L2 | VMI_PAGE_CLONE, clonepfn, start, count);
311}
312
313static void vmi_release_pte(unsigned long pfn)
314{
315 vmi_ops.release_page(pfn, VMI_PAGE_L1);
316}
317
318static void vmi_release_pmd(unsigned long pfn)
319{
320 vmi_ops.release_page(pfn, VMI_PAGE_L2);
321}
322
323
324
325
326static void vmi_pgd_free(struct mm_struct *mm, pgd_t *pgd)
327{
328 unsigned long pfn = __pa(pgd) >> PAGE_SHIFT;
329
330 vmi_ops.release_page(pfn, VMI_PAGE_L2);
331}
332
333
334
335
336
337
338
339
340
341
342
343#define is_current_as(mm, mustbeuser) ((mm) == current->active_mm || \
344 (!mustbeuser && (mm) == &init_mm))
345#define vmi_flags_addr(mm, addr, level, user) \
346 ((level) | (is_current_as(mm, user) ? \
347 (VMI_PAGE_CURRENT_AS | ((addr) & VMI_PAGE_VA_MASK)) : 0))
348#define vmi_flags_addr_defer(mm, addr, level, user) \
349 ((level) | (is_current_as(mm, user) ? \
350 (VMI_PAGE_DEFER | VMI_PAGE_CURRENT_AS | ((addr) & VMI_PAGE_VA_MASK)) : 0))
351
352static void vmi_update_pte(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
353{
354 vmi_ops.update_pte(ptep, vmi_flags_addr(mm, addr, VMI_PAGE_PT, 0));
355}
356
357static void vmi_update_pte_defer(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
358{
359 vmi_ops.update_pte(ptep, vmi_flags_addr_defer(mm, addr, VMI_PAGE_PT, 0));
360}
361
362static void vmi_set_pte(pte_t *ptep, pte_t pte)
363{
364
365 vmi_ops.set_pte(pte, ptep, VMI_PAGE_PT);
366}
367
368static void vmi_set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte)
369{
370 vmi_ops.set_pte(pte, ptep, vmi_flags_addr(mm, addr, VMI_PAGE_PT, 0));
371}
372
373static void vmi_set_pmd(pmd_t *pmdp, pmd_t pmdval)
374{
375#ifdef CONFIG_X86_PAE
376 const pte_t pte = { .pte = pmdval.pmd };
377#else
378 const pte_t pte = { pmdval.pud.pgd.pgd };
379#endif
380 vmi_ops.set_pte(pte, (pte_t *)pmdp, VMI_PAGE_PD);
381}
382
383#ifdef CONFIG_X86_PAE
384
385static void vmi_set_pte_atomic(pte_t *ptep, pte_t pteval)
386{
387
388
389
390
391
392
393
394 set_64bit((unsigned long long *)ptep,pte_val(pteval));
395 vmi_ops.update_pte(ptep, VMI_PAGE_PT);
396}
397
398static void vmi_set_pud(pud_t *pudp, pud_t pudval)
399{
400
401 const pte_t pte = { .pte = pudval.pgd.pgd };
402 vmi_ops.set_pte(pte, (pte_t *)pudp, VMI_PAGE_PDP);
403}
404
405static void vmi_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
406{
407 const pte_t pte = { .pte = 0 };
408 vmi_ops.set_pte(pte, ptep, vmi_flags_addr(mm, addr, VMI_PAGE_PT, 0));
409}
410
411static void vmi_pmd_clear(pmd_t *pmd)
412{
413 const pte_t pte = { .pte = 0 };
414 vmi_ops.set_pte(pte, (pte_t *)pmd, VMI_PAGE_PD);
415}
416#endif
417
418#ifdef CONFIG_SMP
419static void __devinit
420vmi_startup_ipi_hook(int phys_apicid, unsigned long start_eip,
421 unsigned long start_esp)
422{
423 struct vmi_ap_state ap;
424
425
426 memset(&ap, 0, sizeof(struct vmi_ap_state));
427
428 ap.gdtr_limit = GDT_SIZE - 1;
429 ap.gdtr_base = (unsigned long) get_cpu_gdt_table(phys_apicid);
430
431 ap.idtr_limit = IDT_ENTRIES * 8 - 1;
432 ap.idtr_base = (unsigned long) idt_table;
433
434 ap.ldtr = 0;
435
436 ap.cs = __KERNEL_CS;
437 ap.eip = (unsigned long) start_eip;
438 ap.ss = __KERNEL_DS;
439 ap.esp = (unsigned long) start_esp;
440
441 ap.ds = __USER_DS;
442 ap.es = __USER_DS;
443 ap.fs = __KERNEL_PERCPU;
444 ap.gs = __KERNEL_STACK_CANARY;
445
446 ap.eflags = 0;
447
448#ifdef CONFIG_X86_PAE
449
450 if (cpu_has_nx) {
451 unsigned l, h;
452 rdmsr(MSR_EFER, l, h);
453 ap.efer = (unsigned long long) h << 32 | l;
454 }
455#endif
456
457 ap.cr3 = __pa(swapper_pg_dir);
458
459 ap.cr0 = 0x80050023;
460 ap.cr4 = mmu_cr4_features;
461 vmi_ops.set_initial_ap_state((u32)&ap, phys_apicid);
462}
463#endif
464
465static void vmi_start_context_switch(struct task_struct *prev)
466{
467 paravirt_start_context_switch(prev);
468 vmi_ops.set_lazy_mode(2);
469}
470
471static void vmi_end_context_switch(struct task_struct *next)
472{
473 vmi_ops.set_lazy_mode(0);
474 paravirt_end_context_switch(next);
475}
476
477static void vmi_enter_lazy_mmu(void)
478{
479 paravirt_enter_lazy_mmu();
480 vmi_ops.set_lazy_mode(1);
481}
482
483static void vmi_leave_lazy_mmu(void)
484{
485 vmi_ops.set_lazy_mode(0);
486 paravirt_leave_lazy_mmu();
487}
488
489static inline int __init check_vmi_rom(struct vrom_header *rom)
490{
491 struct pci_header *pci;
492 struct pnp_header *pnp;
493 const char *manufacturer = "UNKNOWN";
494 const char *product = "UNKNOWN";
495 const char *license = "unspecified";
496
497 if (rom->rom_signature != 0xaa55)
498 return 0;
499 if (rom->vrom_signature != VMI_SIGNATURE)
500 return 0;
501 if (rom->api_version_maj != VMI_API_REV_MAJOR ||
502 rom->api_version_min+1 < VMI_API_REV_MINOR+1) {
503 printk(KERN_WARNING "VMI: Found mismatched rom version %d.%d\n",
504 rom->api_version_maj,
505 rom->api_version_min);
506 return 0;
507 }
508
509
510
511
512
513
514 if (!rom->pci_header_offs) {
515 printk(KERN_WARNING "VMI: ROM does not contain PCI header.\n");
516 return 0;
517 }
518
519 pci = (struct pci_header *)((char *)rom+rom->pci_header_offs);
520 if (pci->vendorID != PCI_VENDOR_ID_VMWARE ||
521 pci->deviceID != PCI_DEVICE_ID_VMWARE_VMI) {
522
523 printk(KERN_WARNING "VMI: ROM from unknown manufacturer\n");
524 }
525
526 if (rom->pnp_header_offs) {
527 pnp = (struct pnp_header *)((char *)rom+rom->pnp_header_offs);
528 if (pnp->manufacturer_offset)
529 manufacturer = (const char *)rom+pnp->manufacturer_offset;
530 if (pnp->product_offset)
531 product = (const char *)rom+pnp->product_offset;
532 }
533
534 if (rom->license_offs)
535 license = (char *)rom+rom->license_offs;
536
537 printk(KERN_INFO "VMI: Found %s %s, API version %d.%d, ROM version %d.%d\n",
538 manufacturer, product,
539 rom->api_version_maj, rom->api_version_min,
540 pci->rom_version_maj, pci->rom_version_min);
541
542
543
544 if (strcmp(license, "GPL") && strcmp(license, "GPL v2")) {
545 printk(KERN_WARNING "VMI: Non GPL license `%s' found for ROM. Not used.\n",
546 license);
547 return 0;
548 }
549
550 return 1;
551}
552
553
554
555
556static inline int __init probe_vmi_rom(void)
557{
558 unsigned long base;
559
560
561 for (base = 0xC0000; base < 0xE0000; base += 2048) {
562 struct vrom_header *romstart;
563 romstart = (struct vrom_header *)isa_bus_to_virt(base);
564 if (check_vmi_rom(romstart)) {
565 vmi_rom = romstart;
566 return 1;
567 }
568 }
569 return 0;
570}
571
572
573
574
575void vmi_bringup(void)
576{
577
578 if (vmi_ops.set_linear_mapping)
579 vmi_ops.set_linear_mapping(0, (void *)__PAGE_OFFSET, MAXMEM_PFN, 0);
580}
581
582
583
584
585static void *vmi_get_function(int vmicall)
586{
587 u64 reloc;
588 const struct vmi_relocation_info *rel = (struct vmi_relocation_info *)&reloc;
589 reloc = call_vrom_long_func(vmi_rom, get_reloc, vmicall);
590 BUG_ON(rel->type == VMI_RELOCATION_JUMP_REL);
591 if (rel->type == VMI_RELOCATION_CALL_REL)
592 return (void *)rel->eip;
593 else
594 return NULL;
595}
596
597
598
599
600
601
602#define para_fill(opname, vmicall) \
603do { \
604 reloc = call_vrom_long_func(vmi_rom, get_reloc, \
605 VMI_CALL_##vmicall); \
606 if (rel->type == VMI_RELOCATION_CALL_REL) \
607 opname = (void *)rel->eip; \
608 else if (rel->type == VMI_RELOCATION_NOP) \
609 opname = (void *)vmi_nop; \
610 else if (rel->type != VMI_RELOCATION_NONE) \
611 printk(KERN_WARNING "VMI: Unknown relocation " \
612 "type %d for " #vmicall"\n",\
613 rel->type); \
614} while (0)
615
616
617
618
619
620
621
622
623#define para_wrap(opname, wrapper, cache, vmicall) \
624do { \
625 reloc = call_vrom_long_func(vmi_rom, get_reloc, \
626 VMI_CALL_##vmicall); \
627 BUG_ON(rel->type == VMI_RELOCATION_JUMP_REL); \
628 if (rel->type == VMI_RELOCATION_CALL_REL) { \
629 opname = wrapper; \
630 vmi_ops.cache = (void *)rel->eip; \
631 } \
632} while (0)
633
634
635
636
637static inline int __init activate_vmi(void)
638{
639 short kernel_cs;
640 u64 reloc;
641 const struct vmi_relocation_info *rel = (struct vmi_relocation_info *)&reloc;
642
643 if (call_vrom_func(vmi_rom, vmi_init) != 0) {
644 printk(KERN_ERR "VMI ROM failed to initialize!");
645 return 0;
646 }
647 savesegment(cs, kernel_cs);
648
649 pv_info.paravirt_enabled = 1;
650 pv_info.kernel_rpl = kernel_cs & SEGMENT_RPL_MASK;
651 pv_info.name = "vmi [deprecated]";
652
653 pv_init_ops.patch = vmi_patch;
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671 para_wrap(pv_cpu_ops.cpuid, vmi_cpuid, cpuid, CPUID);
672
673 para_fill(pv_cpu_ops.clts, CLTS);
674 para_fill(pv_cpu_ops.get_debugreg, GetDR);
675 para_fill(pv_cpu_ops.set_debugreg, SetDR);
676 para_fill(pv_cpu_ops.read_cr0, GetCR0);
677 para_fill(pv_mmu_ops.read_cr2, GetCR2);
678 para_fill(pv_mmu_ops.read_cr3, GetCR3);
679 para_fill(pv_cpu_ops.read_cr4, GetCR4);
680 para_fill(pv_cpu_ops.write_cr0, SetCR0);
681 para_fill(pv_mmu_ops.write_cr2, SetCR2);
682 para_fill(pv_mmu_ops.write_cr3, SetCR3);
683 para_fill(pv_cpu_ops.write_cr4, SetCR4);
684
685 para_fill(pv_irq_ops.save_fl.func, GetInterruptMask);
686 para_fill(pv_irq_ops.restore_fl.func, SetInterruptMask);
687 para_fill(pv_irq_ops.irq_disable.func, DisableInterrupts);
688 para_fill(pv_irq_ops.irq_enable.func, EnableInterrupts);
689
690 para_fill(pv_cpu_ops.wbinvd, WBINVD);
691 para_fill(pv_cpu_ops.read_tsc, RDTSC);
692
693
694
695
696
697
698
699 para_wrap(pv_cpu_ops.load_tr_desc, vmi_set_tr, set_tr, SetTR);
700
701
702 para_wrap(pv_cpu_ops.set_ldt, vmi_set_ldt, _set_ldt, SetLDT);
703
704 para_fill(pv_cpu_ops.load_gdt, SetGDT);
705 para_fill(pv_cpu_ops.load_idt, SetIDT);
706 para_fill(pv_cpu_ops.store_gdt, GetGDT);
707 para_fill(pv_cpu_ops.store_idt, GetIDT);
708 para_fill(pv_cpu_ops.store_tr, GetTR);
709 pv_cpu_ops.load_tls = vmi_load_tls;
710 para_wrap(pv_cpu_ops.write_ldt_entry, vmi_write_ldt_entry,
711 write_ldt_entry, WriteLDTEntry);
712 para_wrap(pv_cpu_ops.write_gdt_entry, vmi_write_gdt_entry,
713 write_gdt_entry, WriteGDTEntry);
714 para_wrap(pv_cpu_ops.write_idt_entry, vmi_write_idt_entry,
715 write_idt_entry, WriteIDTEntry);
716 para_wrap(pv_cpu_ops.load_sp0, vmi_load_sp0, set_kernel_stack, UpdateKernelStack);
717 para_fill(pv_cpu_ops.set_iopl_mask, SetIOPLMask);
718 para_fill(pv_cpu_ops.io_delay, IODelay);
719
720 para_wrap(pv_cpu_ops.start_context_switch, vmi_start_context_switch,
721 set_lazy_mode, SetLazyMode);
722 para_wrap(pv_cpu_ops.end_context_switch, vmi_end_context_switch,
723 set_lazy_mode, SetLazyMode);
724
725 para_wrap(pv_mmu_ops.lazy_mode.enter, vmi_enter_lazy_mmu,
726 set_lazy_mode, SetLazyMode);
727 para_wrap(pv_mmu_ops.lazy_mode.leave, vmi_leave_lazy_mmu,
728 set_lazy_mode, SetLazyMode);
729
730
731 para_wrap(pv_mmu_ops.flush_tlb_user, vmi_flush_tlb_user, _flush_tlb, FlushTLB);
732 para_wrap(pv_mmu_ops.flush_tlb_kernel, vmi_flush_tlb_kernel, _flush_tlb, FlushTLB);
733 para_fill(pv_mmu_ops.flush_tlb_single, InvalPage);
734
735
736
737
738
739
740#ifdef CONFIG_X86_PAE
741 vmi_ops.set_pte = vmi_get_function(VMI_CALL_SetPxELong);
742 vmi_ops.update_pte = vmi_get_function(VMI_CALL_UpdatePxELong);
743#else
744 vmi_ops.set_pte = vmi_get_function(VMI_CALL_SetPxE);
745 vmi_ops.update_pte = vmi_get_function(VMI_CALL_UpdatePxE);
746#endif
747
748 if (vmi_ops.set_pte) {
749 pv_mmu_ops.set_pte = vmi_set_pte;
750 pv_mmu_ops.set_pte_at = vmi_set_pte_at;
751 pv_mmu_ops.set_pmd = vmi_set_pmd;
752#ifdef CONFIG_X86_PAE
753 pv_mmu_ops.set_pte_atomic = vmi_set_pte_atomic;
754 pv_mmu_ops.set_pud = vmi_set_pud;
755 pv_mmu_ops.pte_clear = vmi_pte_clear;
756 pv_mmu_ops.pmd_clear = vmi_pmd_clear;
757#endif
758 }
759
760 if (vmi_ops.update_pte) {
761 pv_mmu_ops.pte_update = vmi_update_pte;
762 pv_mmu_ops.pte_update_defer = vmi_update_pte_defer;
763 }
764
765 vmi_ops.allocate_page = vmi_get_function(VMI_CALL_AllocatePage);
766 if (vmi_ops.allocate_page) {
767 pv_mmu_ops.alloc_pte = vmi_allocate_pte;
768 pv_mmu_ops.alloc_pmd = vmi_allocate_pmd;
769 pv_mmu_ops.alloc_pmd_clone = vmi_allocate_pmd_clone;
770 }
771
772 vmi_ops.release_page = vmi_get_function(VMI_CALL_ReleasePage);
773 if (vmi_ops.release_page) {
774 pv_mmu_ops.release_pte = vmi_release_pte;
775 pv_mmu_ops.release_pmd = vmi_release_pmd;
776 pv_mmu_ops.pgd_free = vmi_pgd_free;
777 }
778
779
780 vmi_ops.set_linear_mapping = vmi_get_function(VMI_CALL_SetLinearMapping);
781#ifdef CONFIG_HIGHPTE
782 if (vmi_ops.set_linear_mapping)
783 pv_mmu_ops.kmap_atomic_pte = vmi_kmap_atomic_pte;
784#endif
785
786
787
788
789
790
791
792
793 pv_cpu_ops.irq_enable_sysexit = (void *)0xfeedbab0;
794 pv_cpu_ops.iret = (void *)0xbadbab0;
795
796#ifdef CONFIG_SMP
797 para_wrap(pv_apic_ops.startup_ipi_hook, vmi_startup_ipi_hook, set_initial_ap_state, SetInitialAPState);
798#endif
799
800#ifdef CONFIG_X86_LOCAL_APIC
801 para_fill(apic->read, APICRead);
802 para_fill(apic->write, APICWrite);
803#endif
804
805
806
807
808 reloc = call_vrom_long_func(vmi_rom, get_reloc, VMI_CALL_GetCycleFrequency);
809 if (!disable_vmi_timer && rel->type != VMI_RELOCATION_NONE) {
810 vmi_timer_ops.get_cycle_frequency = (void *)rel->eip;
811 vmi_timer_ops.get_cycle_counter =
812 vmi_get_function(VMI_CALL_GetCycleCounter);
813 vmi_timer_ops.get_wallclock =
814 vmi_get_function(VMI_CALL_GetWallclockTime);
815 vmi_timer_ops.wallclock_updated =
816 vmi_get_function(VMI_CALL_WallclockUpdated);
817 vmi_timer_ops.set_alarm = vmi_get_function(VMI_CALL_SetAlarm);
818 vmi_timer_ops.cancel_alarm =
819 vmi_get_function(VMI_CALL_CancelAlarm);
820 x86_init.timers.timer_init = vmi_time_init;
821#ifdef CONFIG_X86_LOCAL_APIC
822 x86_init.timers.setup_percpu_clockev = vmi_time_bsp_init;
823 x86_cpuinit.setup_percpu_clockev = vmi_time_ap_init;
824#endif
825 pv_time_ops.sched_clock = vmi_sched_clock;
826 x86_platform.calibrate_tsc = vmi_tsc_khz;
827 x86_platform.get_wallclock = vmi_get_wallclock;
828 x86_platform.set_wallclock = vmi_set_wallclock;
829
830
831 no_sync_cmos_clock = 1;
832 } else {
833 disable_noidle = 1;
834 disable_vmi_timer = 1;
835 }
836
837 para_fill(pv_irq_ops.safe_halt, Halt);
838
839
840
841
842
843
844
845 apply_paravirt(__parainstructions, __parainstructions_end);
846
847 vmi_bringup();
848
849 return 1;
850}
851
852#undef para_fill
853
854void __init vmi_init(void)
855{
856 if (!vmi_rom)
857 probe_vmi_rom();
858 else
859 check_vmi_rom(vmi_rom);
860
861
862 if (!vmi_rom)
863 return;
864
865 reserve_top_address(-vmi_rom->virtual_top);
866
867#ifdef CONFIG_X86_IO_APIC
868
869 no_timer_check = 1;
870#endif
871}
872
873void __init vmi_activate(void)
874{
875 unsigned long flags;
876
877 if (!vmi_rom)
878 return;
879
880 local_irq_save(flags);
881 activate_vmi();
882 local_irq_restore(flags & X86_EFLAGS_IF);
883}
884
885static int __init parse_vmi(char *arg)
886{
887 if (!arg)
888 return -EINVAL;
889
890 if (!strcmp(arg, "disable_pge")) {
891 clear_cpu_cap(&boot_cpu_data, X86_FEATURE_PGE);
892 disable_pge = 1;
893 } else if (!strcmp(arg, "disable_pse")) {
894 clear_cpu_cap(&boot_cpu_data, X86_FEATURE_PSE);
895 disable_pse = 1;
896 } else if (!strcmp(arg, "disable_sep")) {
897 clear_cpu_cap(&boot_cpu_data, X86_FEATURE_SEP);
898 disable_sep = 1;
899 } else if (!strcmp(arg, "disable_tsc")) {
900 clear_cpu_cap(&boot_cpu_data, X86_FEATURE_TSC);
901 disable_tsc = 1;
902 } else if (!strcmp(arg, "disable_mtrr")) {
903 clear_cpu_cap(&boot_cpu_data, X86_FEATURE_MTRR);
904 disable_mtrr = 1;
905 } else if (!strcmp(arg, "disable_timer")) {
906 disable_vmi_timer = 1;
907 disable_noidle = 1;
908 } else if (!strcmp(arg, "disable_noidle"))
909 disable_noidle = 1;
910 return 0;
911}
912
913early_param("vmi", parse_vmi);
914