mptable.c 31.3 KB
Newer Older
1
/*-
2
3
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
4
5
 * Copyright (c) 1996, by Steve Passe
 * All rights reserved.
6
 * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. The name of the developer may NOT be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

obrien's avatar
obrien committed
29
30
31
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

32
#include "opt_mptable_force_htt.h"
bde's avatar
bde committed
33
#include <sys/param.h>
34
#include <sys/systm.h>
35
#include <sys/bus.h>
36
#include <sys/kernel.h>
37
#include <sys/limits.h>
38
#include <sys/malloc.h>
royger's avatar
royger committed
39
#include <sys/smp.h>
40
41
42
#ifdef NEW_PCIB
#include <sys/rman.h>
#endif
43

44
45
46
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
47

48
49
50
51
#include <dev/pci/pcivar.h>
#ifdef NEW_PCIB
#include <dev/pci/pcib_private.h>
#endif
52
#include <x86/apicreg.h>
53
#include <x86/mptable.h>
54
55
#include <machine/frame.h>
#include <machine/intr_machdep.h>
56
#include <x86/apicvar.h>
57
#include <machine/md_var.h>
58
#include <machine/pc/bios.h>
59
60
61
#ifdef NEW_PCIB
#include <machine/resource.h>
#endif
62
#include <machine/specialreg.h>
63

64
65
66
/* string defined by the Intel MP Spec as identifying the MP table */
#define	MP_SIG			0x5f504d5f	/* _MP_ */

67
68
69
#ifdef __amd64__
#define	MAX_LAPIC_ID		63	/* Max local APIC ID for HTT fixup */
#else
70
#define	MAX_LAPIC_ID		31	/* Max local APIC ID for HTT fixup */
71
#endif
72

73
74
75
#define BIOS_BASE		(0xf0000)
#define BIOS_SIZE		(0x10000)
#define BIOS_COUNT		(BIOS_SIZE/4)
76

77
typedef	void mptable_entry_handler(u_char *entry, void *arg);
78
typedef	void mptable_extended_entry_handler(ext_entry_ptr entry, void *arg);
fsmp's avatar
fsmp committed
79

80
81
82
83
84
85
86
/* descriptions of MP table entries */
typedef struct BASETABLE_ENTRY {
	uint8_t	type;
	uint8_t	length;
	uint8_t	name[16];
}       basetable_entry;

87
88
89
90
91
92
93
94
static basetable_entry basetable_entry_types[] =
{
	{0, 20, "Processor"},
	{1, 8, "Bus"},
	{2, 8, "I/O APIC"},
	{3, 8, "I/O INT"},
	{4, 8, "Local INT"}
};
fsmp's avatar
fsmp committed
95

96
97
98
99
100
101
typedef struct BUSDATA {
	u_char  bus_id;
	enum busTypes bus_type;
}       bus_datum;

typedef struct INTDATA {
fsmp's avatar
fsmp committed
102
103
104
105
106
107
	u_char  int_type;
	u_short int_flags;
	u_char  src_bus_id;
	u_char  src_bus_irq;
	u_char  dst_apic_id;
	u_char  dst_apic_int;
108
109
	u_char	int_vector;
}       io_int, local_int;
fsmp's avatar
fsmp committed
110

111
typedef struct BUSTYPENAME {
fsmp's avatar
fsmp committed
112
	u_char  type;
113
114
	char    name[7];
}       bus_type_name;
115

116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
/* From MP spec v1.4, table 4-8. */
static bus_type_name bus_type_table[] =
{
	{UNKNOWN_BUSTYPE, "CBUS  "},
	{UNKNOWN_BUSTYPE, "CBUSII"},
	{EISA, "EISA  "},
	{UNKNOWN_BUSTYPE, "FUTURE"},
	{UNKNOWN_BUSTYPE, "INTERN"},
	{ISA, "ISA   "},
	{UNKNOWN_BUSTYPE, "MBI   "},
	{UNKNOWN_BUSTYPE, "MBII  "},
	{MCA, "MCA   "},
	{UNKNOWN_BUSTYPE, "MPI   "},
	{UNKNOWN_BUSTYPE, "MPSA  "},
	{UNKNOWN_BUSTYPE, "NUBUS "},
	{PCI, "PCI   "},
	{UNKNOWN_BUSTYPE, "PCMCIA"},
	{UNKNOWN_BUSTYPE, "TC    "},
	{UNKNOWN_BUSTYPE, "VL    "},
	{UNKNOWN_BUSTYPE, "VME   "},
	{UNKNOWN_BUSTYPE, "XPRESS"}
};
138

139
140
141
142
143
144
145
146
147
148
149
150
/* From MP spec v1.4, table 5-1. */
static int default_data[7][5] =
{
/*   nbus, id0, type0, id1, type1 */
	{1, 0, ISA, 255, NOBUS},
	{1, 0, EISA, 255, NOBUS},
	{1, 0, EISA, 255, NOBUS},
	{1, 0, MCA, 255, NOBUS},
	{2, 0, ISA, 1, PCI},
	{2, 0, EISA, 1, PCI},
	{2, 0, MCA, 1, PCI}
};
151

152
153
154
155
struct pci_probe_table_args {
	u_char bus;
	u_char found;
};
156

157
158
159
160
161
struct pci_route_interrupt_args {
	u_char bus;		/* Source bus. */
	u_char irq;		/* Source slot:pin. */
	int vector;		/* Return value. */
};
162

163
164
static mpfps_t mpfps;
static mpcth_t mpct;
165
static ext_entry_ptr mpet;
royger's avatar
royger committed
166
static void *ioapics[IOAPIC_MAX_ID + 1];
167
168
169
170
static bus_datum *busses;
static int mptable_nioapics, mptable_nbusses, mptable_maxbusid;
static int pci0 = -1;

171
static MALLOC_DEFINE(M_MPTABLE, "mptable", "MP Table Items");
172

173
174
175
176
177
static enum intr_polarity conforming_polarity(u_char src_bus,
	    u_char src_bus_irq);
static enum intr_trigger conforming_trigger(u_char src_bus, u_char src_bus_irq);
static enum intr_polarity intentry_polarity(int_entry_ptr intr);
static enum intr_trigger intentry_trigger(int_entry_ptr intr);
178
179
180
static int	lookup_bus_type(char *name);
static void	mptable_count_items(void);
static void	mptable_count_items_handler(u_char *entry, void *arg);
181
#ifdef MPTABLE_FORCE_HTT
182
static void	mptable_hyperthread_fixup(u_int id_mask);
183
#endif
184
185
186
static void	mptable_parse_apics_and_busses(void);
static void	mptable_parse_apics_and_busses_handler(u_char *entry,
    void *arg);
187
static void	mptable_parse_default_config_ints(void);
188
189
190
191
192
193
194
195
196
197
static void	mptable_parse_ints(void);
static void	mptable_parse_ints_handler(u_char *entry, void *arg);
static void	mptable_parse_io_int(int_entry_ptr intr);
static void	mptable_parse_local_int(int_entry_ptr intr);
static void	mptable_pci_probe_table_handler(u_char *entry, void *arg);
static void	mptable_pci_route_interrupt_handler(u_char *entry, void *arg);
static void	mptable_pci_setup(void);
static int	mptable_probe(void);
static int	mptable_probe_cpus(void);
static void	mptable_probe_cpus_handler(u_char *entry, void *arg __unused);
198
static void	mptable_setup_cpus_handler(u_char *entry, void *arg __unused);
199
200
201
static void	mptable_register(void *dummy);
static int	mptable_setup_local(void);
static int	mptable_setup_io(void);
jhb's avatar
jhb committed
202
#ifdef NEW_PCIB
203
204
static void	mptable_walk_extended_table(
    mptable_extended_entry_handler *handler, void *arg);
jhb's avatar
jhb committed
205
#endif
206
static void	mptable_walk_table(mptable_entry_handler *handler, void *arg);
fsmp's avatar
fsmp committed
207
208
static int	search_for_sig(u_int32_t target, int count);

209
static struct apic_enumerator mptable_enumerator = {
210
211
212
213
214
	.apic_name = "MPTable",
	.apic_probe = mptable_probe,
	.apic_probe_cpus = mptable_probe_cpus,
	.apic_setup_local = mptable_setup_local,
	.apic_setup_io = mptable_setup_io
215
};
ps's avatar
ps committed
216

217
/*
218
 * look for the MP spec signature
219
220
 */

221
222
static int
search_for_sig(u_int32_t target, int count)
223
{
224
	int     x;
kib's avatar
kib committed
225
	u_int32_t *addr;
226

227
	addr = (u_int32_t *)BIOS_PADDRTOVADDR(target);
228
229
230
231
232
	for (x = 0; x < count; x += 4)
		if (addr[x] == MP_SIG)
			/* make array index a byte index */
			return (target + (x * sizeof(u_int32_t)));
	return (-1);
233
234
}

235
236
static int
lookup_bus_type(char *name)
237
{
238
	int     x;
239

240
241
242
	for (x = 0; x < MAX_BUSTYPE; ++x)
		if (strncmp(bus_type_table[x].name, name, 6) == 0)
			return (bus_type_table[x].type);
243

244
	return (UNKNOWN_BUSTYPE);
245
246
}

fsmp's avatar
fsmp committed
247
248
249
/*
 * Look for an Intel MP spec table (ie, SMP capable hardware).
 */
250
251
static int
mptable_probe(void)
fsmp's avatar
fsmp committed
252
253
254
255
256
257
{
	int     x;
	u_long  segment;
	u_int32_t target;

	/* see if EBDA exists */
258
	if ((segment = *(u_short *)BIOS_PADDRTOVADDR(0x40e)) != 0) {
fsmp's avatar
fsmp committed
259
260
261
262
263
264
		/* search first 1K of EBDA */
		target = (u_int32_t) (segment << 4);
		if ((x = search_for_sig(target, 1024 / 4)) >= 0)
			goto found;
	} else {
		/* last 1K of base memory, effective 'top of base' passed in */
265
		target = (u_int32_t) ((basemem * 1024) - 0x400);
fsmp's avatar
fsmp committed
266
267
268
269
270
271
272
273
274
275
		if ((x = search_for_sig(target, 1024 / 4)) >= 0)
			goto found;
	}

	/* search the BIOS */
	target = (u_int32_t) BIOS_BASE;
	if ((x = search_for_sig(target, BIOS_COUNT)) >= 0)
		goto found;

	/* nothing found */
276
	return (ENXIO);
fsmp's avatar
fsmp committed
277

fsmp's avatar
fsmp committed
278
found:
279
	mpfps = (mpfps_t)BIOS_PADDRTOVADDR(x);
fsmp's avatar
fsmp committed
280

281
	/* Map in the configuration table if it exists. */
282
283
284
285
286
287
288
289
290
291
292
	if (mpfps->config_type != 0) {
		if (bootverbose)
			printf(
		"MP Table version 1.%d found using Default Configuration %d\n",
			    mpfps->spec_rev, mpfps->config_type);
		if (mpfps->config_type != 5 && mpfps->config_type != 6) {
			printf(
			"MP Table Default Configuration %d is unsupported\n",
			    mpfps->config_type);
			return (ENXIO);
		}
293
		mpct = NULL;
294
	} else {
295
296
297
298
299
		if ((uintptr_t)mpfps->pap >= 1024 * 1024) {
			printf("%s: Unable to map MP Configuration Table\n",
			    __func__);
			return (ENXIO);
		}
300
		mpct = (mpcth_t)BIOS_PADDRTOVADDR((uintptr_t)mpfps->pap);
301
302
303
304
305
306
		if (mpct->base_table_length + (uintptr_t)mpfps->pap >=
		    1024 * 1024) {
			printf("%s: Unable to map end of MP Config Table\n",
			    __func__);
			return (ENXIO);
		}
307
308
309
310
311
		if (mpct->extended_table_length != 0 &&
		    mpct->extended_table_length + mpct->base_table_length +
		    (uintptr_t)mpfps->pap < 1024 * 1024)
			mpet = (ext_entry_ptr)((char *)mpct +
			    mpct->base_table_length);
312
313
314
315
316
317
318
319
320
321
322
323
		if (mpct->signature[0] != 'P' || mpct->signature[1] != 'C' ||
		    mpct->signature[2] != 'M' || mpct->signature[3] != 'P') {
			printf("%s: MP Config Table has bad signature: %c%c%c%c\n",
			    __func__, mpct->signature[0], mpct->signature[1],
			    mpct->signature[2], mpct->signature[3]);
			return (ENXIO);
		}
		if (bootverbose)
			printf(
			"MP Configuration Table version 1.%d found at %p\n",
			    mpct->spec_rev, mpct);
	}
324

325
	return (-100);
326
}
fsmp's avatar
fsmp committed
327

328
/*
329
 * Run through the MP table enumerating CPUs.
330
 */
331
332
static int
mptable_probe_cpus(void)
333
{
334
	u_int cpu_mask;
335

336
337
	/* Is this a pre-defined config? */
	if (mpfps->config_type != 0) {
royger's avatar
royger committed
338
#ifdef SMP
339
340
		mp_ncpus = 2;
		mp_maxid = 1;
royger's avatar
royger committed
341
#endif
342
		max_apic_id = 1;
343
344
345
346
	} else {
		mptable_walk_table(mptable_probe_cpus_handler, &cpu_mask);
	}
	return (0);
347
348
349
}

/*
350
 * Initialize the local APIC on the BSP.
351
 */
352
353
static int
mptable_setup_local(void)
354
{
355
	vm_paddr_t addr;
royger's avatar
royger committed
356
	u_int cpu_mask;
357

358
359
360
	/* Is this a pre-defined config? */
	printf("MPTable: <");
	if (mpfps->config_type != 0) {
361
362
		lapic_create(0, 1);
		lapic_create(1, 0);
363
		addr = DEFAULT_APIC_BASE;
364
		printf("Default Configuration %d", mpfps->config_type);
365

366
	} else {
367
368
369
370
371
		cpu_mask = 0;
		mptable_walk_table(mptable_setup_cpus_handler, &cpu_mask);
#ifdef MPTABLE_FORCE_HTT
		mptable_hyperthread_fixup(cpu_mask);
#endif
372
		addr = mpct->apic_address;
373
374
		printf("%.*s %.*s", (int)sizeof(mpct->oem_id), mpct->oem_id,
		    (int)sizeof(mpct->product_id), mpct->product_id);
375
	}
376
	printf(">\n");
377
	lapic_init(addr);
378
	return (0);
379
380
381
}

/*
382
 * Run through the MP table enumerating I/O APICs.
383
 */
384
385
static int
mptable_setup_io(void)
386
{
387
388
	int i;
	u_char byte;
389

390
391
392
393
394
395
	/* First, we count individual items and allocate arrays. */
	mptable_count_items();
	busses = malloc((mptable_maxbusid + 1) * sizeof(bus_datum), M_MPTABLE,
	    M_WAITOK);
	for (i = 0; i <= mptable_maxbusid; i++)
		busses[i].bus_type = NOBUS;
396

cem's avatar
cem committed
397
	/* Second, we run through adding I/O APIC's and buses. */
398
	mptable_parse_apics_and_busses();	
399

400
401
	/* Third, we run through the table tweaking interrupt sources. */
	mptable_parse_ints();
402

403
	/* Fourth, we register all the I/O APIC's. */
royger's avatar
royger committed
404
	for (i = 0; i <= IOAPIC_MAX_ID; i++)
405
406
		if (ioapics[i] != NULL)
			ioapic_register(ioapics[i]);
407

408
409
	/* Fifth, we setup data structures to handle PCI interrupt routing. */
	mptable_pci_setup();
410

411
412
	/* Finally, we throw the switch to enable the I/O APIC's. */
	if (mpfps->mpfb2 & MPFB2_IMCR_PRESENT) {
413
414
		outb(0x22, 0x70);	/* select IMCR */
		byte = inb(0x23);	/* current contents */
fsmp's avatar
fsmp committed
415
		byte |= 0x01;		/* mask external INTR */
416
417
		outb(0x23, byte);	/* disconnect 8259s/NMI */
	}
fsmp's avatar
fsmp committed
418

419
	return (0);
420
421
}

422
423
424
static void
mptable_register(void *dummy __unused)
{
425

426
427
	apic_register_enumerator(&mptable_enumerator);
}
428
SYSINIT(mptable_register, SI_SUB_TUNABLES - 1, SI_ORDER_FIRST, mptable_register,
429
    NULL);
430
431

/*
432
 * Call the handler routine for each entry in the MP config base table.
433
434
 */
static void
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
mptable_walk_table(mptable_entry_handler *handler, void *arg)
{
	u_int i;
	u_char *entry;

	entry = (u_char *)(mpct + 1);
	for (i = 0; i < mpct->entry_count; i++) {
		switch (*entry) {
		case MPCT_ENTRY_PROCESSOR:
		case MPCT_ENTRY_IOAPIC:
		case MPCT_ENTRY_BUS:
		case MPCT_ENTRY_INT:
		case MPCT_ENTRY_LOCAL_INT:
			break;
		default:
			panic("%s: Unknown MP Config Entry %d\n", __func__,
			    (int)*entry);
		}
		handler(entry, arg);
		entry += basetable_entry_types[*entry].length;
	}
}
457

jhb's avatar
jhb committed
458
#ifdef NEW_PCIB
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
/*
 * Call the handler routine for each entry in the MP config extended
 * table.
 */
static void
mptable_walk_extended_table(mptable_extended_entry_handler *handler, void *arg)
{
	ext_entry_ptr end, entry;

	if (mpet == NULL)
		return;
	entry = mpet;
	end = (ext_entry_ptr)((char *)mpet + mpct->extended_table_length);
	while (entry < end) {
		handler(entry, arg);
		entry = (ext_entry_ptr)((char *)entry + entry->length);
	}
}
jhb's avatar
jhb committed
477
#endif
478

479
480
static void
mptable_probe_cpus_handler(u_char *entry, void *arg)
481
482
483
484
485
486
487
488
{
	proc_entry_ptr proc;

	switch (*entry) {
	case MPCT_ENTRY_PROCESSOR:
		proc = (proc_entry_ptr)entry;
		if (proc->cpu_flags & PROCENTRY_FLAG_EN &&
		    proc->apic_id < MAX_LAPIC_ID && mp_ncpus < MAXCPU) {
royger's avatar
royger committed
489
#ifdef SMP
490
491
			mp_ncpus++;
			mp_maxid = mp_ncpus - 1;
royger's avatar
royger committed
492
#endif
493
494
495
496
497
498
499
500
			max_apic_id = max(max_apic_id, proc->apic_id);
		}
		break;
	}
}

static void
mptable_setup_cpus_handler(u_char *entry, void *arg)
501
502
503
504
505
506
507
508
509
510
{
	proc_entry_ptr proc;
	u_int *cpu_mask;

	switch (*entry) {
	case MPCT_ENTRY_PROCESSOR:
		proc = (proc_entry_ptr)entry;
		if (proc->cpu_flags & PROCENTRY_FLAG_EN) {
			lapic_create(proc->apic_id, proc->cpu_flags &
			    PROCENTRY_FLAG_BP);
511
512
513
514
			if (proc->apic_id < MAX_LAPIC_ID) {
				cpu_mask = (u_int *)arg;
				*cpu_mask |= (1ul << proc->apic_id);
			}
515
516
517
518
		}
		break;
	}
}
519

520
521
522
523
524
static void
mptable_count_items_handler(u_char *entry, void *arg __unused)
{
	io_apic_entry_ptr apic;
	bus_entry_ptr bus;
525

526
527
528
529
530
531
532
533
534
535
536
537
538
539
	switch (*entry) {
	case MPCT_ENTRY_BUS:
		bus = (bus_entry_ptr)entry;
		mptable_nbusses++;
		if (bus->bus_id > mptable_maxbusid)
			mptable_maxbusid = bus->bus_id;
		break;
	case MPCT_ENTRY_IOAPIC:
		apic = (io_apic_entry_ptr)entry;
		if (apic->apic_flags & IOAPICENTRY_FLAG_EN)
			mptable_nioapics++;
		break;
	}
}
540

541
542
543
544
545
546
/*
 * Count items in the table.
 */
static void
mptable_count_items(void)
{
547

548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
	/* Is this a pre-defined config? */
	if (mpfps->config_type != 0) {
		mptable_nioapics = 1;
		switch (mpfps->config_type) {
		case 1:
		case 2:
		case 3:
		case 4:
			mptable_nbusses = 1;
			break;
		case 5:
		case 6:
		case 7:
			mptable_nbusses = 2;
			break;
		default:
			panic("Unknown pre-defined MP Table config type %d",
			    mpfps->config_type);
		}
		mptable_maxbusid = mptable_nbusses - 1;
	} else
		mptable_walk_table(mptable_count_items_handler, NULL);
}
571

572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
/*
 * Add a bus or I/O APIC from an entry in the table.
 */
static void
mptable_parse_apics_and_busses_handler(u_char *entry, void *arg __unused)
{
	io_apic_entry_ptr apic;
	bus_entry_ptr bus;
	enum busTypes bus_type;
	int i;

	switch (*entry) {
	case MPCT_ENTRY_BUS:
		bus = (bus_entry_ptr)entry;
		bus_type = lookup_bus_type(bus->bus_type);
		if (bus_type == UNKNOWN_BUSTYPE) {
			printf("MPTable: Unknown bus %d type \"", bus->bus_id);
			for (i = 0; i < 6; i++)
				printf("%c", bus->bus_type[i]);
			printf("\"\n");
		}
		busses[bus->bus_id].bus_id = bus->bus_id;
		busses[bus->bus_id].bus_type = bus_type;
		break;
	case MPCT_ENTRY_IOAPIC:
		apic = (io_apic_entry_ptr)entry;
		if (!(apic->apic_flags & IOAPICENTRY_FLAG_EN))
			break;
royger's avatar
royger committed
600
		if (apic->apic_id > IOAPIC_MAX_ID)
601
602
603
604
605
			panic("%s: I/O APIC ID %d too high", __func__,
			    apic->apic_id);
		if (ioapics[apic->apic_id] != NULL)
			panic("%s: Double APIC ID %d", __func__,
			    apic->apic_id);
606
607
		ioapics[apic->apic_id] = ioapic_create(apic->apic_address,
		    apic->apic_id, -1);
608
609
610
		break;
	default:
		break;
611
	}
612
}
613

614
/*
cem's avatar
cem committed
615
 * Enumerate I/O APIC's and buses.
616
617
618
619
620
621
622
 */
static void
mptable_parse_apics_and_busses(void)
{

	/* Is this a pre-defined config? */
	if (mpfps->config_type != 0) {
623
		ioapics[2] = ioapic_create(DEFAULT_IO_APIC_BASE, 2, 0);
624
		busses[0].bus_id = 0;
625
		busses[0].bus_type = default_data[mpfps->config_type - 1][2];
626
627
628
		if (mptable_nbusses > 1) {
			busses[1].bus_id = 1;
			busses[1].bus_type =
629
			    default_data[mpfps->config_type - 1][4];
630
631
632
633
634
		}
	} else
		mptable_walk_table(mptable_parse_apics_and_busses_handler,
		    NULL);
}
635

636
637
638
/*
 * Determine conforming polarity for a given bus type.
 */
639
640
static enum intr_polarity
conforming_polarity(u_char src_bus, u_char src_bus_irq)
641
{
642

643
644
645
	KASSERT(src_bus <= mptable_maxbusid, ("bus id %d too large", src_bus));
	switch (busses[src_bus].bus_type) {
	case ISA:
646
	case EISA:
647
		return (INTR_POLARITY_HIGH);
648
	case PCI:
649
		return (INTR_POLARITY_LOW);
650
651
652
653
654
	default:
		panic("%s: unknown bus type %d", __func__,
		    busses[src_bus].bus_type);
	}
}
655

656
657
658
/*
 * Determine conforming trigger for a given bus type.
 */
659
static enum intr_trigger
660
661
conforming_trigger(u_char src_bus, u_char src_bus_irq)
{
662

663
664
665
	KASSERT(src_bus <= mptable_maxbusid, ("bus id %d too large", src_bus));
	switch (busses[src_bus].bus_type) {
	case ISA:
666
667
668
669
		if (elcr_found)
			return (elcr_read_trigger(src_bus_irq));
		else
			return (INTR_TRIGGER_EDGE);
670
	case PCI:
671
		return (INTR_TRIGGER_LEVEL);
nyan's avatar
nyan committed
672

673
674
	case EISA:
		KASSERT(src_bus_irq < 16, ("Invalid EISA IRQ %d", src_bus_irq));
675
		KASSERT(elcr_found, ("Missing ELCR"));
676
		return (elcr_read_trigger(src_bus_irq));
nyan's avatar
nyan committed
677

678
679
680
681
682
	default:
		panic("%s: unknown bus type %d", __func__,
		    busses[src_bus].bus_type);
	}
}
683

684
static enum intr_polarity
685
686
intentry_polarity(int_entry_ptr intr)
{
fsmp's avatar
fsmp committed
687

688
689
	switch (intr->int_flags & INTENTRY_FLAGS_POLARITY) {
	case INTENTRY_FLAGS_POLARITY_CONFORM:
690
691
		return (conforming_polarity(intr->src_bus_id,
			    intr->src_bus_irq));
692
	case INTENTRY_FLAGS_POLARITY_ACTIVEHI:
693
		return (INTR_POLARITY_HIGH);
694
	case INTENTRY_FLAGS_POLARITY_ACTIVELO:
695
		return (INTR_POLARITY_LOW);
696
697
698
	default:
		panic("Bogus interrupt flags");
	}
699
700
}

701
static enum intr_trigger
702
703
704
705
706
707
708
709
intentry_trigger(int_entry_ptr intr)
{

	switch (intr->int_flags & INTENTRY_FLAGS_TRIGGER) {
	case INTENTRY_FLAGS_TRIGGER_CONFORM:
		return (conforming_trigger(intr->src_bus_id,
			    intr->src_bus_irq));
	case INTENTRY_FLAGS_TRIGGER_EDGE:
710
		return (INTR_TRIGGER_EDGE);
711
	case INTENTRY_FLAGS_TRIGGER_LEVEL:
712
		return (INTR_TRIGGER_LEVEL);
713
714
715
716
	default:
		panic("Bogus interrupt flags");
	}
}
717
718

/*
719
 * Parse an interrupt entry for an I/O interrupt routed to a pin on an I/O APIC.
720
 */
721
722
static void
mptable_parse_io_int(int_entry_ptr intr)
723
{
724
	void *ioapic;
725
	u_int pin, apic_id;
726

727
	apic_id = intr->dst_apic_id;
728
	if (intr->dst_apic_id == 0xff) {
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
		/*
		 * An APIC ID of 0xff means that the interrupt is connected
		 * to the specified pin on all I/O APICs in the system.  If
		 * there is only one I/O APIC, then use that APIC to route
		 * the interrupts.  If there is more than one I/O APIC, then
		 * punt.
		 */
		if (mptable_nioapics == 1) {
			apic_id = 0;
			while (ioapics[apic_id] == NULL)
				apic_id++;
		} else {
			printf(
			"MPTable: Ignoring global interrupt entry for pin %d\n",
			    intr->dst_apic_int);
			return;
		}
746
	}
royger's avatar
royger committed
747
	if (apic_id > IOAPIC_MAX_ID) {
748
749
750
751
		printf("MPTable: Ignoring interrupt entry for ioapic%d\n",
		    intr->dst_apic_id);
		return;
	}
752
	ioapic = ioapics[apic_id];
753
754
755
	if (ioapic == NULL) {
		printf(
	"MPTable: Ignoring interrupt entry for missing ioapic%d\n",
756
		    apic_id);
757
758
759
760
761
		return;
	}
	pin = intr->dst_apic_int;
	switch (intr->int_type) {
	case INTENTRY_TYPE_INT:
762
763
		switch (busses[intr->src_bus_id].bus_type) {
		case NOBUS:
764
			panic("interrupt from missing bus");
765
766
767
768
769
770
771
772
		case ISA:
		case EISA:
			if (busses[intr->src_bus_id].bus_type == ISA)
				ioapic_set_bus(ioapic, pin, APIC_BUS_ISA);
			else
				ioapic_set_bus(ioapic, pin, APIC_BUS_EISA);
			if (intr->src_bus_irq == pin)
				break;
773
			ioapic_remap_vector(ioapic, pin, intr->src_bus_irq);
774
775
776
			if (ioapic_get_vector(ioapic, intr->src_bus_irq) ==
			    intr->src_bus_irq)
				ioapic_disable_pin(ioapic, intr->src_bus_irq);
777
778
779
780
781
782
783
			break;
		case PCI:
			ioapic_set_bus(ioapic, pin, APIC_BUS_PCI);
			break;
		default:
			ioapic_set_bus(ioapic, pin, APIC_BUS_UNKNOWN);
			break;
784
		}
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
		break;
	case INTENTRY_TYPE_NMI:
		ioapic_set_nmi(ioapic, pin);
		break;
	case INTENTRY_TYPE_SMI:
		ioapic_set_smi(ioapic, pin);
		break;
	case INTENTRY_TYPE_EXTINT:
		ioapic_set_extint(ioapic, pin);
		break;
	default:
		panic("%s: invalid interrupt entry type %d\n", __func__,
		    intr->int_type);
	}
	if (intr->int_type == INTENTRY_TYPE_INT ||
	    (intr->int_flags & INTENTRY_FLAGS_TRIGGER) !=
	    INTENTRY_FLAGS_TRIGGER_CONFORM)
		ioapic_set_triggermode(ioapic, pin, intentry_trigger(intr));
	if (intr->int_type == INTENTRY_TYPE_INT ||
	    (intr->int_flags & INTENTRY_FLAGS_POLARITY) !=
	    INTENTRY_FLAGS_POLARITY_CONFORM)
		ioapic_set_polarity(ioapic, pin, intentry_polarity(intr));
807
808
}

809
810
811
812
813
/*
 * Parse an interrupt entry for a local APIC LVT pin.
 */
static void
mptable_parse_local_int(int_entry_ptr intr)
814
{
815
	u_int apic_id, pin;
816

817
818
819
820
821
	if (intr->dst_apic_id == 0xff)
		apic_id = APIC_ID_ALL;
	else
		apic_id = intr->dst_apic_id;
	if (intr->dst_apic_int == 0)
822
		pin = APIC_LVT_LINT0;
823
	else
824
		pin = APIC_LVT_LINT1;
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
	switch (intr->int_type) {
	case INTENTRY_TYPE_INT:
#if 1
		printf(
	"MPTable: Ignoring vectored local interrupt for LINTIN%d vector %d\n",
		    intr->dst_apic_int, intr->src_bus_irq);
		return;
#else
		lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_FIXED);
		break;
#endif
	case INTENTRY_TYPE_NMI:
		lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI);
		break;
	case INTENTRY_TYPE_SMI:
		lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_SMI);
		break;
	case INTENTRY_TYPE_EXTINT:
		lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_EXTINT);
		break;
	default:
		panic("%s: invalid interrupt entry type %d\n", __func__,
		    intr->int_type);
	}
	if ((intr->int_flags & INTENTRY_FLAGS_TRIGGER) !=
	    INTENTRY_FLAGS_TRIGGER_CONFORM)
		lapic_set_lvt_triggermode(apic_id, pin,
		    intentry_trigger(intr));
	if ((intr->int_flags & INTENTRY_FLAGS_POLARITY) !=
	    INTENTRY_FLAGS_POLARITY_CONFORM)
		lapic_set_lvt_polarity(apic_id, pin, intentry_polarity(intr));
}
857
858

/*
859
 * Parse interrupt entries.
860
 */
861
static void
862
mptable_parse_ints_handler(u_char *entry, void *arg __unused)
863
{
864
	int_entry_ptr intr;
865

866
867
868
869
870
871
872
873
	intr = (int_entry_ptr)entry;
	switch (*entry) {
	case MPCT_ENTRY_INT:
		mptable_parse_io_int(intr);
		break;
	case MPCT_ENTRY_LOCAL_INT:
		mptable_parse_local_int(intr);
		break;
874
875
	}
}
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927

/*
 * Configure interrupt pins for a default configuration.  For details see
 * Table 5-2 in Section 5 of the MP Table specification.
 */
static void
mptable_parse_default_config_ints(void)
{
	struct INTENTRY entry;
	int pin;

	/*
	 * All default configs route IRQs from bus 0 to the first 16 pins
	 * of the first I/O APIC with an APIC ID of 2.
	 */
	entry.type = MPCT_ENTRY_INT;
	entry.int_flags = INTENTRY_FLAGS_POLARITY_CONFORM |
	    INTENTRY_FLAGS_TRIGGER_CONFORM;
	entry.src_bus_id = 0;
	entry.dst_apic_id = 2;

	/* Run through all 16 pins. */
	for (pin = 0; pin < 16; pin++) {
		entry.dst_apic_int = pin;
		switch (pin) {
		case 0:
			/* Pin 0 is an ExtINT pin. */
			entry.int_type = INTENTRY_TYPE_EXTINT;
			break;
		case 2:
			/* IRQ 0 is routed to pin 2. */
			entry.int_type = INTENTRY_TYPE_INT;
			entry.src_bus_irq = 0;
			break;
		default:
			/* All other pins are identity mapped. */
			entry.int_type = INTENTRY_TYPE_INT;
			entry.src_bus_irq = pin;
			break;
		}
		mptable_parse_io_int(&entry);
	}

	/* Certain configs disable certain pins. */
	if (mpfps->config_type == 7)
		ioapic_disable_pin(ioapics[2], 0);
	if (mpfps->config_type == 2) {
		ioapic_disable_pin(ioapics[2], 2);
		ioapic_disable_pin(ioapics[2], 13);
	}
}

928
/*
929
 * Configure the interrupt pins
930
 */
931
932
static void
mptable_parse_ints(void)
933
{
934

935
936
937
	/* Is this a pre-defined config? */
	if (mpfps->config_type != 0) {
		/* Configure LINT pins. */
938
939
940
		lapic_set_lvt_mode(APIC_ID_ALL, APIC_LVT_LINT0,
		    APIC_LVT_DM_EXTINT);
		lapic_set_lvt_mode(APIC_ID_ALL, APIC_LVT_LINT1, APIC_LVT_DM_NMI);
941

942
		/* Configure I/O APIC pins. */
943
		mptable_parse_default_config_ints();
944
945
	} else
		mptable_walk_table(mptable_parse_ints_handler, NULL);
946
947
}

948
#ifdef MPTABLE_FORCE_HTT
949
/*
950
951
 * Perform a hyperthreading "fix-up" to enumerate any logical CPU's
 * that aren't already listed in the table.
952
953
954
955
956
957
958
959
960
961
962
 *
 * XXX: We assume that all of the physical CPUs in the
 * system have the same number of logical CPUs.
 *
 * XXX: We assume that APIC ID's are allocated such that
 * the APIC ID's for a physical processor are aligned
 * with the number of logical CPU's in the processor.
 */
static void
mptable_hyperthread_fixup(u_int id_mask)
{
963
	u_int i, id, logical_cpus;
964
965
966
967

	/* Nothing to do if there is no HTT support. */
	if ((cpu_feature & CPUID_HTT) == 0)
		return;
968
	logical_cpus = (cpu_procinfo & CPUID_HTT_CORES) >> 16;
969
970
971
972
973
974
975
976
977
	if (logical_cpus <= 1)
		return;

	/*
	 * For each APIC ID of a CPU that is set in the mask,
	 * scan the other candidate APIC ID's for this
	 * physical processor.  If any of those ID's are
	 * already in the table, then kill the fixup.
	 */
978
	for (id = 0; id <= MAX_LAPIC_ID; id++) {
979
980
981
982
983
984
985
986
987
988
989
		if ((id_mask & 1 << id) == 0)
			continue;
		/* First, make sure we are on a logical_cpus boundary. */
		if (id % logical_cpus != 0)
			return;
		for (i = id + 1; i < id + logical_cpus; i++)
			if ((id_mask & 1 << i) != 0)
				return;
	}

	/*
990
991
	 * Ok, the ID's checked out, so perform the fixup by
	 * adding the logical CPUs.
992
	 */
993
994
995
996
997
998
999
1000
	while ((id = ffs(id_mask)) != 0) {
		id--;
		for (i = id + 1; i < id + logical_cpus; i++) {
			if (bootverbose)
				printf(
			"MPTable: Adding logical CPU %d from main CPU %d\n",
				    i, id);
			lapic_create(i, 0);
For faster browsing, not all history is shown. View entire blame