c74661fe16df640f6991eaa1c3e79095fc1a098f
[reactos.git] / reactos / hal / halx86 / mp / apic.c
1 /*
2 * ReactOS kernel
3 * Copyright (C) 2004, 2005 ReactOS Team
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19 /* $Id$
20 *
21 * COPYRIGHT: See COPYING in the top level directory
22 * PROJECT: ReactOS kernel
23 * FILE: hal/halx86/apic.c
24 * PURPOSE:
25 * PROGRAMMER:
26 */
27
28 /* INCLUDE ***********************************************************************/
29
30 #include <hal.h>
31 #include <halfuncs.h> /* Not in PCH because only used for MP HAL */
32 #include <rtlfuncs.h> /* Not in PCH because only used for MP HAL */
33 #define NDEBUG
34 #include <debug.h>
35
36 /* GLOBALS ***********************************************************************/
37
38 ULONG CPUCount; /* Total number of CPUs */
39 ULONG BootCPU; /* Bootstrap processor */
40 ULONG OnlineCPUs; /* Bitmask of online CPUs */
41 CPU_INFO CPUMap[MAX_CPU]; /* Map of all CPUs in the system */
42
43 #ifdef CONFIG_SMP
44 PULONG BIOSBase; /* Virtual address of BIOS data segment */
45 PULONG CommonBase; /* Virtual address of common area */
46 #endif
47
48 PULONG APICBase = (PULONG)APIC_DEFAULT_BASE; /* Virtual address of local APIC */
49
50 ULONG APICMode; /* APIC mode at startup */
51
52 /* For debugging */
53 ULONG lastregr[MAX_CPU];
54 ULONG lastvalr[MAX_CPU];
55 ULONG lastregw[MAX_CPU];
56 ULONG lastvalw[MAX_CPU];
57
58 #ifdef CONFIG_SMP
59 #include <pshpack1.h>
60 typedef struct _COMMON_AREA_INFO
61 {
62 ULONG Stack; /* Location of AP stack */
63 ULONG PageDirectory; /* Page directory for an AP */
64 ULONG NtProcessStartup; /* Kernel entry point for an AP */
65 ULONG PaeModeEnabled; /* PAE mode is enabled */
66 ULONG Debug[16]; /* For debugging */
67 } COMMON_AREA_INFO, *PCOMMON_AREA_INFO;
68 #include <poppack.h>
69 #endif
70
71 CHAR *APstart, *APend;
72
73 #define BIOS_AREA 0x0
74 #define COMMON_AREA 0x2000
75
76 #define HZ (100)
77 #define APIC_DIVISOR (16)
78
79 #define CMOS_READ(address) { \
80 WRITE_PORT_UCHAR((PUCHAR)0x70, address)); \
81 READ_PORT_UCHAR((PUCHAR)0x71)); \
82 }
83
84 #define CMOS_WRITE(address, value) { \
85 WRITE_PORT_UCHAR((PUCHAR)0x70, address); \
86 WRITE_PORT_UCHAR((PUCHAR)0x71, value); \
87 }
88
89 extern ULONG_PTR KernelBase;
90
91 /* FUNCTIONS *********************************************************************/
92
93 extern ULONG Read8254Timer(VOID);
94 extern VOID WaitFor8254Wraparound(VOID);
95 extern VOID MpsTimerInterrupt(VOID);
96 extern VOID MpsErrorInterrupt(VOID);
97 extern VOID MpsSpuriousInterrupt(VOID);
98 extern VOID MpsIpiInterrupt(VOID);
99
100 ULONG APICGetMaxLVT(VOID)
101 {
102 ULONG tmp, ver, maxlvt;
103
104 tmp = APICRead(APIC_VER);
105 ver = GET_APIC_VERSION(tmp);
106 /* 82489DXs do not report # of LVT entries. */
107 maxlvt = APIC_INTEGRATED(ver) ? GET_APIC_MAXLVT(tmp) : 2;
108
109 return maxlvt;
110 }
111
112 VOID APICClear(VOID)
113 {
114 ULONG tmp, maxlvt;
115
116 maxlvt = APICGetMaxLVT();
117
118 /*
119 * Careful: we have to set masks only first to deassert
120 * any level-triggered sources.
121 */
122
123 if (maxlvt >= 3)
124 {
125 tmp = ERROR_VECTOR;
126 APICWrite(APIC_LVT3, tmp | APIC_LVT3_MASKED);
127 }
128
129 tmp = APICRead(APIC_LVTT);
130 APICWrite(APIC_LVTT, tmp | APIC_LVT_MASKED);
131
132 tmp = APICRead(APIC_LINT0);
133 APICWrite(APIC_LINT0, tmp | APIC_LVT_MASKED);
134
135 tmp = APICRead(APIC_LINT1);
136 APICWrite(APIC_LINT1, tmp | APIC_LVT_MASKED);
137
138 if (maxlvt >= 4)
139 {
140 tmp = APICRead(APIC_LVTPC);
141 APICWrite(APIC_LVTPC, tmp | APIC_LVT_MASKED);
142 }
143 #if 0
144 if (maxlvt >= 5)
145 {
146 tmp = APICRead(APIC_LVTTHMR);
147 APICWrite(APIC_LVTTHMR, tmp | APIC_LVT_MASKED);
148 }
149 #endif
150 /*
151 * Clean APIC state for other OSs:
152 */
153 APICWrite(APIC_LVTT, APIC_LVT_MASKED);
154 APICWrite(APIC_LINT0, APIC_LVT_MASKED);
155 APICWrite(APIC_LINT1, APIC_LVT_MASKED);
156
157 if (maxlvt >= 3)
158 {
159 APICWrite(APIC_LVT3, APIC_LVT3_MASKED);
160 }
161
162 if (maxlvt >= 4)
163 {
164 APICWrite(APIC_LVTPC, APIC_LVT_MASKED);
165 }
166 #if 0
167 if (maxlvt >= 5)
168 {
169 APICWrite(APIC_LVTTHMR, APIC_LVT_MASKED);
170 }
171 #endif
172 }
173
174 /* Enable symetric I/O mode ie. connect the BSP's local APIC to INT and NMI lines */
175 VOID EnableApicMode(VOID)
176 {
177 /*
178 * Do not trust the local APIC being empty at bootup.
179 */
180 APICClear();
181
182 WRITE_PORT_UCHAR((PUCHAR)0x22, 0x70);
183 WRITE_PORT_UCHAR((PUCHAR)0x23, 0x01);
184 }
185
186 /* Disable symetric I/O mode ie. go to PIC mode */
187 __inline VOID DisableSMPMode(VOID)
188 {
189 /*
190 * Put the board back into PIC mode (has an effect
191 * only on certain older boards). Note that APIC
192 * interrupts, including IPIs, won't work beyond
193 * this point! The only exception are INIT IPIs.
194 */
195 WRITE_PORT_UCHAR((PUCHAR)0x22, 0x70);
196 WRITE_PORT_UCHAR((PUCHAR)0x23, 0x00);
197 }
198
199 VOID DumpESR(VOID)
200 {
201 ULONG tmp;
202
203 if (APICGetMaxLVT() > 3)
204 {
205 APICWrite(APIC_ESR, 0);
206 }
207 tmp = APICRead(APIC_ESR);
208 DbgPrint("ESR %08x\n", tmp);
209 }
210
211
212 VOID APICDisable(VOID)
213 {
214 ULONG tmp;
215
216 APICClear();
217
218 /*
219 * Disable APIC (implies clearing of registers for 82489DX!).
220 */
221 tmp = APICRead(APIC_SIVR);
222 tmp &= ~APIC_SIVR_ENABLE;
223 APICWrite(APIC_SIVR, tmp);
224 }
225
226 static VOID APICDumpBit(ULONG base)
227 {
228 ULONG v, i, j;
229
230 DbgPrint("0123456789abcdef0123456789abcdef\n");
231 for (i = 0; i < 8; i++)
232 {
233 v = APICRead(base + i*0x10);
234 for (j = 0; j < 32; j++)
235 {
236 if (v & (1<<j))
237 DbgPrint("1");
238 else
239 DbgPrint("0");
240 }
241 DbgPrint("\n");
242 }
243 }
244
245
246 VOID APICDump(VOID)
247 /*
248 * Dump the contents of the local APIC registers
249 */
250 {
251 ULONG v, ver, maxlvt;
252 ULONG r1, r2, w1, w2;
253 ULONG CPU = ThisCPU();
254
255
256 r1 = lastregr[CPU];
257 r2 = lastvalr[CPU];
258 w1 = lastregw[CPU];
259 w2 = lastvalw[CPU];
260
261 DbgPrint("\nPrinting local APIC contents on CPU(%d):\n", ThisCPU());
262 v = APICRead(APIC_ID);
263 DbgPrint("... ID : %08x (%01x) ", v, GET_APIC_ID(v));
264 v = APICRead(APIC_VER);
265 DbgPrint("... VERSION: %08x\n", v);
266 ver = GET_APIC_VERSION(v);
267 maxlvt = APICGetMaxLVT();
268
269 v = APICRead(APIC_TPR);
270 DbgPrint("... TPR : %08x (%02x)", v, v & ~0);
271
272 if (APIC_INTEGRATED(ver))
273 {
274 /* !82489DX */
275 v = APICRead(APIC_APR);
276 DbgPrint("... APR : %08x (%02x)\n", v, v & ~0);
277 v = APICRead(APIC_PPR);
278 DbgPrint("... PPR : %08x\n", v);
279 }
280
281 v = APICRead(APIC_EOI);
282 DbgPrint("... EOI : %08x ! ", v);
283 v = APICRead(APIC_LDR);
284 DbgPrint("... LDR : %08x\n", v);
285 v = APICRead(APIC_DFR);
286 DbgPrint("... DFR : %08x ! ", v);
287 v = APICRead(APIC_SIVR);
288 DbgPrint("... SIVR : %08x\n", v);
289
290 if (0)
291 {
292 DbgPrint("... ISR field:\n");
293 APICDumpBit(APIC_ISR);
294 DbgPrint("... TMR field:\n");
295 APICDumpBit(APIC_TMR);
296 DbgPrint("... IRR field:\n");
297 APICDumpBit(APIC_IRR);
298 }
299
300 if (APIC_INTEGRATED(ver))
301 {
302 /* !82489DX */
303 if (maxlvt > 3)
304 {
305 /* Due to the Pentium erratum 3AP. */
306 APICWrite(APIC_ESR, 0);
307 }
308 v = APICRead(APIC_ESR);
309 DbgPrint("... ESR : %08x\n", v);
310 }
311
312 v = APICRead(APIC_ICR0);
313 DbgPrint("... ICR0 : %08x ! ", v);
314 v = APICRead(APIC_ICR1);
315 DbgPrint("... ICR1 : %08x ! ", v);
316
317 v = APICRead(APIC_LVTT);
318 DbgPrint("... LVTT : %08x\n", v);
319
320 if (maxlvt > 3)
321 {
322 /* PC is LVT#4. */
323 v = APICRead(APIC_LVTPC);
324 DbgPrint("... LVTPC : %08x ! ", v);
325 }
326 v = APICRead(APIC_LINT0);
327 DbgPrint("... LINT0 : %08x ! ", v);
328 v = APICRead(APIC_LINT1);
329 DbgPrint("... LINT1 : %08x\n", v);
330
331 if (maxlvt > 2)
332 {
333 v = APICRead(APIC_LVT3);
334 DbgPrint("... LVT3 : %08x\n", v);
335 }
336
337 v = APICRead(APIC_ICRT);
338 DbgPrint("... ICRT : %08x ! ", v);
339 v = APICRead(APIC_CCRT);
340 DbgPrint("... CCCT : %08x ! ", v);
341 v = APICRead(APIC_TDCR);
342 DbgPrint("... TDCR : %08x\n", v);
343 DbgPrint("\n");
344 DbgPrint("Last register read (offset): 0x%08X\n", r1);
345 DbgPrint("Last register read (value): 0x%08X\n", r2);
346 DbgPrint("Last register written (offset): 0x%08X\n", w1);
347 DbgPrint("Last register written (value): 0x%08X\n", w2);
348 DbgPrint("\n");
349 }
350
351 BOOLEAN VerifyLocalAPIC(VOID)
352 {
353 SIZE_T reg0, reg1;
354 ULONG l = 0, h = 0;
355 /* The version register is read-only in a real APIC */
356 reg0 = APICRead(APIC_VER);
357 DPRINT1("Getting VERSION: %x\n", reg0);
358 APICWrite(APIC_VER, reg0 ^ APIC_VER_MASK);
359 reg1 = APICRead(APIC_VER);
360 DPRINT1("Getting VERSION: %x\n", reg1);
361
362 /*
363 * The two version reads above should print the same
364 * numbers. If the second one is different, then we
365 * poke at a non-APIC.
366 */
367
368 if (reg1 != reg0)
369 {
370 return FALSE;
371 }
372
373 /*
374 * Check if the version looks reasonably.
375 */
376 reg1 = GET_APIC_VERSION(reg0);
377 if (reg1 == 0x00 || reg1 == 0xff)
378 {
379 return FALSE;
380 }
381 reg1 = APICGetMaxLVT();
382 if (reg1 < 0x02 || reg1 == 0xff)
383 {
384 return FALSE;
385 }
386
387 /*
388 * The ID register is read/write in a real APIC.
389 */
390 reg0 = APICRead(APIC_ID);
391 DPRINT1("Getting ID: %x\n", reg0);
392 APICWrite(APIC_ID, reg0 ^ APIC_ID_MASK);
393 reg1 = APICRead(APIC_ID);
394 DPRINT1("Getting ID: %x\n", reg1);
395 APICWrite(APIC_ID, reg0);
396 if (reg1 != (reg0 ^ APIC_ID_MASK))
397 {
398 return FALSE;
399 }
400
401 Ke386Rdmsr(0x1b /*MSR_IA32_APICBASE*/, l, h);
402
403 if (!(l & /*MSR_IA32_APICBASE_ENABLE*/(1<<11)))
404 {
405 DPRINT1("Local APIC disabled by BIOS -- reenabling.\n");
406 l &= ~/*MSR_IA32_APICBASE_BASE*/(1<<11);
407 l |= /*MSR_IA32_APICBASE_ENABLE | APIC_DEFAULT_PHYS_BASE*/(1<<11)|0xfee00000;
408 Ke386Wrmsr(0x1b/*MSR_IA32_APICBASE*/, l, h);
409 }
410
411
412
413 return TRUE;
414 }
415
416 #ifdef CONFIG_SMP
417 VOID APICSendIPI(ULONG Target, ULONG Mode)
418 {
419 ULONG tmp, i, flags = 0;
420
421 /* save flags and disable interrupts */
422 Ke386SaveFlags(flags);
423 _disable();
424
425 /* Wait up to 100ms for the APIC to become ready */
426 for (i = 0; i < 10000; i++)
427 {
428 tmp = APICRead(APIC_ICR0);
429 /* Check Delivery Status */
430 if ((tmp & APIC_ICR0_DS) == 0)
431 break;
432 KeStallExecutionProcessor(10);
433 }
434
435 if (i == 10000)
436 {
437 DPRINT1("CPU(%d) Previous IPI was not delivered after 100ms.\n", ThisCPU());
438 }
439
440 /* Setup the APIC to deliver the IPI */
441 DPRINT("%08x %x\n", SET_APIC_DEST_FIELD(Target), Target);
442 APICWrite(APIC_ICR1, SET_APIC_DEST_FIELD(Target));
443
444 if (Target == APIC_TARGET_SELF)
445 {
446 Mode |= APIC_ICR0_DESTS_SELF;
447 }
448 else if (Target == APIC_TARGET_ALL)
449 {
450 Mode |= APIC_ICR0_DESTS_ALL;
451 }
452 else if (Target == APIC_TARGET_ALL_BUT_SELF)
453 {
454 Mode |= APIC_ICR0_DESTS_ALL_BUT_SELF;
455 }
456 else
457 {
458 Mode |= APIC_ICR0_DESTS_FIELD;
459 }
460
461 /* Now, fire off the IPI */
462 APICWrite(APIC_ICR0, Mode);
463
464 /* Wait up to 100ms for the APIC to become ready */
465 for (i = 0; i < 10000; i++)
466 {
467 tmp = APICRead(APIC_ICR0);
468 /* Check Delivery Status */
469 if ((tmp & APIC_ICR0_DS) == 0)
470 break;
471 KeStallExecutionProcessor(10);
472 }
473
474 if (i == 10000)
475 {
476 DPRINT1("CPU(%d) Current IPI was not delivered after 100ms.\n", ThisCPU());
477 }
478 Ke386RestoreFlags(flags);
479 }
480 #endif
481
482 VOID APICSetup(VOID)
483 {
484 ULONG CPU, tmp;
485
486 CPU = ThisCPU();
487
488 // APICDump();
489
490 DPRINT1("CPU%d:\n", CPU);
491 DPRINT1(" Physical APIC id: %d\n", GET_APIC_ID(APICRead(APIC_ID)));
492 DPRINT1(" Logical APIC id: %d\n", GET_APIC_LOGICAL_ID(APICRead(APIC_LDR)));
493 DPRINT1("%08x %08x %08x\n", APICRead(APIC_ID), APICRead(APIC_LDR), APICRead(APIC_DFR));
494
495 /*
496 * Intel recommends to set DFR, LDR and TPR before enabling
497 * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel
498 * document number 292116). So here it goes...
499 */
500
501 /*
502 * Put the APIC into flat delivery mode.
503 * Must be "all ones" explicitly for 82489DX.
504 */
505 APICWrite(APIC_DFR, 0xFFFFFFFF);
506
507 /*
508 * Set up the logical destination ID.
509 */
510 tmp = APICRead(APIC_LDR);
511 tmp &= ~APIC_LDR_MASK;
512 /*
513 * FIXME:
514 * This works only up to 8 CPU's
515 */
516 tmp |= (1 << (KeGetCurrentProcessorNumber() + 24));
517 APICWrite(APIC_LDR, tmp);
518
519
520 DPRINT1("CPU%d:\n", CPU);
521 DPRINT1(" Physical APIC id: %d\n", GET_APIC_ID(APICRead(APIC_ID)));
522 DPRINT1(" Logical APIC id: %d\n", GET_APIC_LOGICAL_ID(APICRead(APIC_LDR)));
523 DPRINT1("%08x %08x %08x\n", APICRead(APIC_ID), APICRead(APIC_LDR), APICRead(APIC_DFR));
524 DPRINT1("%d\n", CPUMap[CPU].APICId);
525
526 /* Accept only higher interrupts */
527 APICWrite(APIC_TPR, 0xef);
528
529 /* Enable local APIC */
530 tmp = APICRead(APIC_SIVR);
531 tmp &= ~0xff;
532 tmp |= APIC_SIVR_ENABLE;
533
534 #if 0
535 tmp &= ~APIC_SIVR_FOCUS;
536 #else
537 tmp |= APIC_SIVR_FOCUS;
538 #endif
539
540 /* Set spurious interrupt vector */
541 tmp |= SPURIOUS_VECTOR;
542 APICWrite(APIC_SIVR, tmp);
543
544 /*
545 * Set up LVT0, LVT1:
546 *
547 * set up through-local-APIC on the BP's LINT0. This is not
548 * strictly necessery in pure symmetric-IO mode, but sometimes
549 * we delegate interrupts to the 8259A.
550 */
551 tmp = APICRead(APIC_LINT0) & APIC_LVT_MASKED;
552 if (CPU == BootCPU && (APICMode == amPIC || !tmp))
553 {
554 tmp = APIC_DM_EXTINT;
555 DPRINT1("enabled ExtINT on CPU#%d\n", CPU);
556 }
557 else
558 {
559 tmp = APIC_DM_EXTINT | APIC_LVT_MASKED;
560 DPRINT1("masked ExtINT on CPU#%d\n", CPU);
561 }
562 APICWrite(APIC_LINT0, tmp);
563
564 /*
565 * Only the BSP should see the LINT1 NMI signal, obviously.
566 */
567 if (CPU == BootCPU)
568 {
569 tmp = APIC_DM_NMI;
570 }
571 else
572 {
573 tmp = APIC_DM_NMI | APIC_LVT_MASKED;
574 }
575 if (!APIC_INTEGRATED(CPUMap[CPU].APICVersion))
576 {
577 /* 82489DX */
578 tmp |= APIC_LVT_LEVEL_TRIGGER;
579 }
580 APICWrite(APIC_LINT1, tmp);
581
582 if (APIC_INTEGRATED(CPUMap[CPU].APICVersion))
583 {
584 /* !82489DX */
585 if (APICGetMaxLVT() > 3)
586 {
587 /* Due to the Pentium erratum 3AP */
588 APICWrite(APIC_ESR, 0);
589 }
590
591 tmp = APICRead(APIC_ESR);
592 DPRINT("ESR value before enabling vector: 0x%X\n", tmp);
593
594 /* Enable sending errors */
595 tmp = ERROR_VECTOR;
596 APICWrite(APIC_LVT3, tmp);
597
598 /*
599 * Spec says clear errors after enabling vector
600 */
601 if (APICGetMaxLVT() > 3)
602 {
603 APICWrite(APIC_ESR, 0);
604 }
605 tmp = APICRead(APIC_ESR);
606 DPRINT("ESR value after enabling vector: 0x%X\n", tmp);
607 }
608 }
609 #ifdef CONFIG_SMP
610 VOID APICSyncArbIDs(VOID)
611 {
612 ULONG i, tmp;
613
614 /* Wait up to 100ms for the APIC to become ready */
615 for (i = 0; i < 10000; i++)
616 {
617 tmp = APICRead(APIC_ICR0);
618 /* Check Delivery Status */
619 if ((tmp & APIC_ICR0_DS) == 0)
620 break;
621 KeStallExecutionProcessor(10);
622 }
623
624 if (i == 10000)
625 {
626 DPRINT("CPU(%d) APIC busy for 100ms.\n", ThisCPU());
627 }
628
629 DPRINT("Synchronizing Arb IDs.\n");
630 APICWrite(APIC_ICR0, APIC_ICR0_DESTS_ALL | APIC_ICR0_LEVEL | APIC_DM_INIT);
631 }
632 #endif
633
634 VOID MpsErrorHandler(VOID)
635 {
636 ULONG tmp1, tmp2;
637
638 APICDump();
639
640 tmp1 = APICRead(APIC_ESR);
641 APICWrite(APIC_ESR, 0);
642 tmp2 = APICRead(APIC_ESR);
643 DPRINT1("APIC error on CPU(%d) ESR(%x)(%x)\n", ThisCPU(), tmp1, tmp2);
644
645 /*
646 * Acknowledge the interrupt
647 */
648 APICSendEOI();
649
650 /* Here is what the APIC error bits mean:
651 * 0: Send CS error
652 * 1: Receive CS error
653 * 2: Send accept error
654 * 3: Receive accept error
655 * 4: Reserved
656 * 5: Send illegal vector
657 * 6: Received illegal vector
658 * 7: Illegal register address
659 */
660 DPRINT1("APIC error on CPU(%d) ESR(%x)(%x)\n", ThisCPU(), tmp1, tmp2);
661 for (;;);
662 }
663
664 VOID MpsSpuriousHandler(VOID)
665 {
666 ULONG tmp;
667
668 DPRINT("Spurious interrupt on CPU(%d)\n", ThisCPU());
669
670 tmp = APICRead(APIC_ISR + ((SPURIOUS_VECTOR & ~0x1f) >> 1));
671 if (tmp & (1 << (SPURIOUS_VECTOR & 0x1f)))
672 {
673 APICSendEOI();
674 return;
675 }
676 #if 0
677 /* No need to send EOI here */
678 APICDump();
679 #endif
680 }
681
682 #ifdef CONFIG_SMP
683 VOID MpsIpiHandler(VOID)
684 {
685 KIRQL oldIrql;
686
687 HalBeginSystemInterrupt(IPI_LEVEL,
688 IPI_VECTOR,
689 &oldIrql);
690 _enable();
691 #if 0
692 DbgPrint("(%s:%d) MpsIpiHandler on CPU%d, current irql is %d\n",
693 __FILE__,__LINE__, KeGetCurrentProcessorNumber(), KeGetCurrentIrql());
694 #endif
695
696 KiIpiServiceRoutine(NULL, NULL);
697
698 #if 0
699 DbgPrint("(%s:%d) MpsIpiHandler on CPU%d done\n", __FILE__,__LINE__, KeGetCurrentProcessorNumber());
700 #endif
701
702 _disable();
703 HalEndSystemInterrupt(oldIrql, 0);
704 }
705 #endif
706
707 VOID
708 MpsIRQTrapFrameToTrapFrame(PKIRQ_TRAPFRAME IrqTrapFrame,
709 PKTRAP_FRAME TrapFrame)
710 {
711 TrapFrame->SegGs = (USHORT)IrqTrapFrame->Gs;
712 TrapFrame->SegFs = (USHORT)IrqTrapFrame->Fs;
713 TrapFrame->SegEs = (USHORT)IrqTrapFrame->Es;
714 TrapFrame->SegDs = (USHORT)IrqTrapFrame->Ds;
715 TrapFrame->Eax = IrqTrapFrame->Eax;
716 TrapFrame->Ecx = IrqTrapFrame->Ecx;
717 TrapFrame->Edx = IrqTrapFrame->Edx;
718 TrapFrame->Ebx = IrqTrapFrame->Ebx;
719 TrapFrame->HardwareEsp = IrqTrapFrame->Esp;
720 TrapFrame->Ebp = IrqTrapFrame->Ebp;
721 TrapFrame->Esi = IrqTrapFrame->Esi;
722 TrapFrame->Edi = IrqTrapFrame->Edi;
723 TrapFrame->Eip = IrqTrapFrame->Eip;
724 TrapFrame->SegCs = IrqTrapFrame->Cs;
725 TrapFrame->EFlags = IrqTrapFrame->Eflags;
726 }
727
728 VOID
729 MpsTimerHandler(ULONG Vector, PKIRQ_TRAPFRAME Trapframe)
730 {
731 KIRQL oldIrql;
732 KTRAP_FRAME KernelTrapFrame;
733 #if 0
734 ULONG CPU;
735 static ULONG Count[MAX_CPU] = {0,};
736 #endif
737 HalBeginSystemInterrupt(LOCAL_TIMER_VECTOR,
738 PROFILE_LEVEL,
739 &oldIrql);
740 _enable();
741
742 #if 0
743 CPU = ThisCPU();
744 if ((Count[CPU] % 100) == 0)
745 {
746 DbgPrint("(%s:%d) MpsTimerHandler on CPU%d, irql = %d, epi = %x, KPCR = %x\n", __FILE__, __LINE__, CPU, oldIrql,Trapframe->Eip, KeGetPcr());
747 }
748 Count[CPU]++;
749 #endif
750
751 /* FIXME: SMP is totally broken */
752 MpsIRQTrapFrameToTrapFrame(Trapframe, &KernelTrapFrame);
753 if (KeGetCurrentProcessorNumber() == 0)
754 {
755 //KeUpdateSystemTime(&KernelTrapFrame, oldIrql);
756 }
757 else
758 {
759 //KeUpdateRunTime(&KernelTrapFrame, oldIrql);
760 }
761
762 _disable();
763 HalEndSystemInterrupt (oldIrql, 0);
764 }
765
766 VOID APICSetupLVTT(ULONG ClockTicks)
767 {
768 ULONG tmp;
769
770 tmp = GET_APIC_VERSION(APICRead(APIC_VER));
771 if (!APIC_INTEGRATED(tmp))
772 {
773 tmp = SET_APIC_TIMER_BASE(APIC_TIMER_BASE_DIV) | APIC_LVT_PERIODIC | LOCAL_TIMER_VECTOR;
774 }
775 else
776 {
777 /* Periodic timer */
778 tmp = APIC_LVT_PERIODIC | LOCAL_TIMER_VECTOR;
779 }
780 APICWrite(APIC_LVTT, tmp);
781
782 tmp = APICRead(APIC_TDCR);
783 tmp &= ~(APIC_TDCR_1 | APIC_TIMER_BASE_DIV);
784 tmp |= APIC_TDCR_16;
785 APICWrite(APIC_TDCR, tmp);
786 APICWrite(APIC_ICRT, ClockTicks / APIC_DIVISOR);
787 }
788
789 VOID
790 APICCalibrateTimer(ULONG CPU)
791 {
792 ULARGE_INTEGER t1, t2;
793 LONG tt1, tt2;
794 BOOLEAN TSCPresent;
795
796 DPRINT("Calibrating APIC timer for CPU %d\n", CPU);
797
798 APICSetupLVTT(1000000000);
799
800 TSCPresent = ((PKIPCR)KeGetPcr())->PrcbData.FeatureBits & KF_RDTSC ? TRUE : FALSE;
801
802 /*
803 * The timer chip counts down to zero. Let's wait
804 * for a wraparound to start exact measurement:
805 * (the current tick might have been already half done)
806 */
807 //WaitFor8254Wraparound();
808
809 /*
810 * We wrapped around just now. Let's start
811 */
812 if (TSCPresent)
813 {
814 t1.QuadPart = (LONGLONG)__rdtsc();
815 }
816 tt1 = APICRead(APIC_CCRT);
817
818 //WaitFor8254Wraparound();
819
820
821 tt2 = APICRead(APIC_CCRT);
822 if (TSCPresent)
823 {
824 t2.QuadPart = (LONGLONG)__rdtsc();
825 CPUMap[CPU].CoreSpeed = (HZ * (t2.QuadPart - t1.QuadPart));
826 DPRINT("CPU clock speed is %ld.%04ld MHz.\n",
827 CPUMap[CPU].CoreSpeed/1000000,
828 CPUMap[CPU].CoreSpeed%1000000);
829 ((PKIPCR)KeGetPcr())->PrcbData.MHz = CPUMap[CPU].CoreSpeed/1000000;
830 }
831
832 CPUMap[CPU].BusSpeed = (HZ * (long)(tt1 - tt2) * APIC_DIVISOR);
833
834 /* Setup timer for normal operation */
835 // APICSetupLVTT((CPUMap[CPU].BusSpeed / 1000000) * 100); // 100ns
836 APICSetupLVTT((CPUMap[CPU].BusSpeed / 1000000) * 10000); // 10ms
837 // APICSetupLVTT((CPUMap[CPU].BusSpeed / 1000000) * 100000); // 100ms
838
839 DPRINT("Host bus clock speed is %ld.%04ld MHz.\n",
840 CPUMap[CPU].BusSpeed/1000000,
841 CPUMap[CPU].BusSpeed%1000000);
842 }
843
844 VOID
845 SetInterruptGate(ULONG index, ULONG address)
846 {
847 KIDTENTRY *idt;
848 KIDT_ACCESS Access;
849
850 /* Set the IDT Access Bits */
851 Access.Reserved = 0;
852 Access.Present = 1;
853 Access.Dpl = 0; /* Kernel-Mode */
854 Access.SystemSegmentFlag = 0;
855 Access.SegmentType = I386_INTERRUPT_GATE;
856
857 idt = (KIDTENTRY*)((ULONG)KeGetPcr()->IDT + index * sizeof(KIDTENTRY));
858 idt->Offset = address & 0xffff;
859 idt->Selector = KGDT_R0_CODE;
860 idt->Access = Access.Value;
861 idt->ExtendedOffset = address >> 16;
862 }
863
864 VOID HaliInitBSP(VOID)
865 {
866 #ifdef CONFIG_SMP
867 PUSHORT ps;
868 #endif
869
870 static BOOLEAN BSPInitialized = FALSE;
871
872 /* Only initialize the BSP once */
873 if (BSPInitialized)
874 {
875 ASSERT(FALSE);
876 return;
877 }
878
879 BSPInitialized = TRUE;
880
881 /* Setup interrupt handlers */
882 SetInterruptGate(LOCAL_TIMER_VECTOR, (ULONG)MpsTimerInterrupt);
883 SetInterruptGate(ERROR_VECTOR, (ULONG)MpsErrorInterrupt);
884 SetInterruptGate(SPURIOUS_VECTOR, (ULONG)MpsSpuriousInterrupt);
885 #ifdef CONFIG_SMP
886 SetInterruptGate(IPI_VECTOR, (ULONG)MpsIpiInterrupt);
887 #endif
888 DPRINT("APIC is mapped at 0x%X\n", APICBase);
889
890 if (VerifyLocalAPIC())
891 {
892 DPRINT("APIC found\n");
893 }
894 else
895 {
896 DPRINT("No APIC found\n");
897 ASSERT(FALSE);
898 }
899
900 if (APICMode == amPIC)
901 {
902 EnableApicMode();
903 }
904
905 APICSetup();
906
907 #ifdef CONFIG_SMP
908 /* BIOS data segment */
909 BIOSBase = (PULONG)BIOS_AREA;
910
911 /* Area for communicating with the APs */
912 CommonBase = (PULONG)COMMON_AREA;
913
914 /* Copy bootstrap code to common area */
915 memcpy((PVOID)((ULONG)CommonBase + PAGE_SIZE),
916 &APstart,
917 (ULONG)&APend - (ULONG)&APstart + 1);
918
919 /* Set shutdown code */
920 CMOS_WRITE(0xF, 0xA);
921
922 /* Set warm reset vector */
923 ps = (PUSHORT)((ULONG)BIOSBase + 0x467);
924 *ps = (COMMON_AREA + PAGE_SIZE) & 0xF;
925
926 ps = (PUSHORT)((ULONG)BIOSBase + 0x469);
927 *ps = (COMMON_AREA + PAGE_SIZE) >> 4;
928 #endif
929
930 /* Calibrate APIC timer */
931 APICCalibrateTimer(BootCPU);
932 }
933
934 #ifdef CONFIG_SMP
935 VOID
936 HaliStartApplicationProcessor(ULONG Cpu, ULONG Stack)
937 {
938 ULONG tmp, maxlvt;
939 PCOMMON_AREA_INFO Common;
940 ULONG StartupCount;
941 ULONG i, j;
942 ULONG DeliveryStatus = 0;
943 ULONG AcceptStatus = 0;
944
945 if (Cpu >= MAX_CPU ||
946 Cpu >= CPUCount ||
947 OnlineCPUs & (1 << Cpu))
948 {
949 ASSERT(FALSE);
950 }
951 DPRINT1("Attempting to boot CPU %d\n", Cpu);
952
953 /* Send INIT IPI */
954
955 APICSendIPI(Cpu, APIC_DM_INIT|APIC_ICR0_LEVEL_ASSERT);
956
957 KeStallExecutionProcessor(200);
958
959 /* Deassert INIT */
960
961 APICSendIPI(Cpu, APIC_DM_INIT|APIC_ICR0_LEVEL_DEASSERT);
962
963 if (APIC_INTEGRATED(CPUMap[Cpu].APICVersion))
964 {
965 /* Clear APIC errors */
966 APICWrite(APIC_ESR, 0);
967 tmp = (APICRead(APIC_ESR) & APIC_ESR_MASK);
968 }
969
970 Common = (PCOMMON_AREA_INFO)CommonBase;
971
972 /* Write the location of the AP stack */
973 Common->Stack = (ULONG)Stack;
974 /* Write the page directory page */
975 Common->PageDirectory = __readcr3();
976 /* Write the kernel entry point */
977 Common->NtProcessStartup = (ULONG_PTR)RtlImageNtHeader((PVOID)KernelBase)->OptionalHeader.AddressOfEntryPoint + KernelBase;
978 /* Write the state of the mae mode */
979 Common->PaeModeEnabled = __readcr4() & CR4_PAE ? 1 : 0;
980
981 DPRINT1("%x %x %x %x\n", Common->Stack, Common->PageDirectory, Common->NtProcessStartup, Common->PaeModeEnabled);
982
983 DPRINT("Cpu %d got stack at 0x%X\n", Cpu, Common->Stack);
984 #if 0
985 for (j = 0; j < 16; j++)
986 {
987 Common->Debug[j] = 0;
988 }
989 #endif
990
991 maxlvt = APICGetMaxLVT();
992
993 /* Is this a local APIC or an 82489DX? */
994 StartupCount = (APIC_INTEGRATED(CPUMap[Cpu].APICVersion)) ? 2 : 0;
995
996 for (i = 1; i <= StartupCount; i++)
997 {
998 /* It's a local APIC, so send STARTUP IPI */
999 DPRINT("Sending startup signal %d\n", i);
1000 /* Clear errors */
1001 APICWrite(APIC_ESR, 0);
1002 APICRead(APIC_ESR);
1003
1004 APICSendIPI(Cpu, APIC_DM_STARTUP | ((COMMON_AREA + PAGE_SIZE) >> 12)|APIC_ICR0_LEVEL_DEASSERT);
1005
1006 /* Wait up to 10ms for IPI to be delivered */
1007 j = 0;
1008 do
1009 {
1010 KeStallExecutionProcessor(10);
1011
1012 /* Check Delivery Status */
1013 DeliveryStatus = APICRead(APIC_ICR0) & APIC_ICR0_DS;
1014
1015 j++;
1016 } while ((DeliveryStatus) && (j < 1000));
1017
1018 KeStallExecutionProcessor(200);
1019
1020 /*
1021 * Due to the Pentium erratum 3AP.
1022 */
1023 if (maxlvt > 3)
1024 {
1025 APICRead(APIC_SIVR);
1026 APICWrite(APIC_ESR, 0);
1027 }
1028
1029 AcceptStatus = APICRead(APIC_ESR) & APIC_ESR_MASK;
1030
1031 if (DeliveryStatus || AcceptStatus)
1032 {
1033 break;
1034 }
1035 }
1036
1037 if (DeliveryStatus)
1038 {
1039 DPRINT("STARTUP IPI for CPU %d was never delivered.\n", Cpu);
1040 }
1041
1042 if (AcceptStatus)
1043 {
1044 DPRINT("STARTUP IPI for CPU %d was never accepted.\n", Cpu);
1045 }
1046
1047 if (!(DeliveryStatus || AcceptStatus))
1048 {
1049
1050 /* Wait no more than 5 seconds for processor to boot */
1051 DPRINT("Waiting for 5 seconds for CPU %d to boot\n", Cpu);
1052
1053 /* Wait no more than 5 seconds */
1054 for (j = 0; j < 50000; j++)
1055 {
1056 if (CPUMap[Cpu].Flags & CPU_ENABLED)
1057 {
1058 break;
1059 }
1060 KeStallExecutionProcessor(100);
1061 }
1062 }
1063
1064 if (CPUMap[Cpu].Flags & CPU_ENABLED)
1065 {
1066 DbgPrint("CPU %d is now running\n", Cpu);
1067 }
1068 else
1069 {
1070 DbgPrint("Initialization of CPU %d failed\n", Cpu);
1071 }
1072
1073 #if 0
1074 DPRINT("Debug bytes are:\n");
1075
1076 for (j = 0; j < 4; j++)
1077 {
1078 DPRINT("0x%08X 0x%08X 0x%08X 0x%08X.\n",
1079 Common->Debug[j*4+0],
1080 Common->Debug[j*4+1],
1081 Common->Debug[j*4+2],
1082 Common->Debug[j*4+3]);
1083 }
1084
1085 #endif
1086 }
1087
1088 #endif
1089
1090 /* EOF */