2 * Copyright (c) 1996, by Steve Passe
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. The name of the developer may NOT be used to endorse or promote products
11 * derived from this software without specific prior written permission.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * $FreeBSD: src/sys/i386/i386/mp_machdep.c,v 1.115.2.15 2003/03/14 21:22:35 jhb Exp $
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/kernel.h>
33 #include <sys/sysctl.h>
34 #include <sys/malloc.h>
35 #include <sys/memrange.h>
36 #include <sys/cons.h> /* cngetc() */
37 #include <sys/machintr.h>
40 #include <vm/vm_param.h>
42 #include <vm/vm_kern.h>
43 #include <vm/vm_extern.h>
45 #include <vm/vm_map.h>
47 #include <machine/smp.h>
48 #include <machine_base/isa/isa_intr.h>
49 #include <machine_base/apic/apicreg.h>
50 #include <machine_base/apic/apicvar.h>
51 #include <machine/atomic.h>
52 #include <machine/cpufunc.h>
53 #include <machine/cputypes.h>
54 #include <machine_base/apic/lapic.h>
55 #include <machine_base/apic/ioapic.h>
56 #include <machine/psl.h>
57 #include <machine/segments.h>
58 #include <machine/tss.h>
59 #include <machine/specialreg.h>
60 #include <machine/globaldata.h>
61 #include <machine/pmap_inval.h>
62 #include <machine/mptable.h>
64 #include <machine/md_var.h> /* setidt() */
65 #include <machine_base/icu/icu.h> /* IPIs */
66 #include <machine_base/apic/ioapic_abi.h>
67 #include <machine/intr_machdep.h> /* IPIs */
69 extern u_int base_memory; /* in kilobytes, see machdep.c */
70 extern u_long ebda_addr;
71 extern int imcr_present;
74 static int force_enable = 0;
75 TUNABLE_INT("hw.lapic_force_enable", &force_enable);
77 #define BIOS_BASE (0xf0000)
78 #define BIOS_BASE2 (0xe0000)
79 #define BIOS_SIZE (0x10000)
80 #define BIOS_COUNT (BIOS_SIZE/4)
82 #define PROCENTRY_FLAG_EN 0x01
83 #define PROCENTRY_FLAG_BP 0x02
84 #define IOAPICENTRY_FLAG_EN 0x01
87 /* MP Floating Pointer Structure */
88 typedef struct MPFPS {
101 /* MP Configuration Table Header */
102 typedef struct MPCTH {
104 u_short base_table_length;
108 u_char product_id[12];
109 u_int32_t oem_table_pointer;
110 u_short oem_table_size;
112 u_int32_t apic_address;
113 u_short extended_table_length;
114 u_char extended_table_checksum;
119 typedef struct PROCENTRY {
124 u_int32_t cpu_signature;
125 u_int32_t feature_flags;
130 typedef struct BUSENTRY {
136 typedef struct IOAPICENTRY {
141 u_int32_t apic_address;
142 } *io_apic_entry_ptr;
144 typedef struct INTENTRY {
154 /* descriptions of MP basetable entries */
155 typedef struct BASETABLE_ENTRY {
164 vm_size_t mp_cth_mapsz;
167 #define MPTABLE_POS_USE_DEFAULT(mpt) \
168 ((mpt)->mp_fps->mpfb1 != 0 || (mpt)->mp_cth == NULL)
172 int mb_type; /* MPTABLE_BUS_ */
173 TAILQ_ENTRY(mptable_bus) mb_link;
176 #define MPTABLE_BUS_ISA 0
177 #define MPTABLE_BUS_PCI 1
179 struct mptable_bus_info {
180 TAILQ_HEAD(, mptable_bus) mbi_list;
183 struct mptable_pci_int {
190 TAILQ_ENTRY(mptable_pci_int) mpci_link;
193 struct mptable_ioapic {
199 TAILQ_ENTRY(mptable_ioapic) mio_link;
202 typedef int (*mptable_iter_func)(void *, const void *, int);
204 static int mptable_iterate_entries(const mpcth_t,
205 mptable_iter_func, void *);
206 static int mptable_search(void);
207 static long mptable_search_sig(u_int32_t target, int count);
208 static int mptable_hyperthread_fixup(cpumask_t, int);
209 static int mptable_map(struct mptable_pos *);
210 static void mptable_unmap(struct mptable_pos *);
211 static void mptable_bus_info_alloc(const mpcth_t,
212 struct mptable_bus_info *);
213 static void mptable_bus_info_free(struct mptable_bus_info *);
215 static int mptable_lapic_probe(struct lapic_enumerator *);
216 static int mptable_lapic_enumerate(struct lapic_enumerator *);
217 static void mptable_lapic_default(void);
219 static int mptable_ioapic_probe(struct ioapic_enumerator *);
220 static void mptable_ioapic_enumerate(struct ioapic_enumerator *);
222 static basetable_entry basetable_entry_types[] =
224 {0, 20, "Processor"},
231 static vm_paddr_t mptable_fps_phyaddr;
232 static int mptable_use_default;
233 static TAILQ_HEAD(mptable_pci_int_list, mptable_pci_int) mptable_pci_int_list =
234 TAILQ_HEAD_INITIALIZER(mptable_pci_int_list);
235 static TAILQ_HEAD(mptable_ioapic_list, mptable_ioapic) mptable_ioapic_list =
236 TAILQ_HEAD_INITIALIZER(mptable_ioapic_list);
241 struct mptable_pos mpt;
244 KKASSERT(mptable_fps_phyaddr == 0);
246 mptable_fps_phyaddr = mptable_search();
247 if (mptable_fps_phyaddr == 0)
250 error = mptable_map(&mpt);
252 mptable_fps_phyaddr = 0;
256 if (MPTABLE_POS_USE_DEFAULT(&mpt)) {
257 kprintf("MPTABLE: use default configuration\n");
258 mptable_use_default = 1;
260 if (mpt.mp_fps->mpfb2 & 0x80)
265 SYSINIT(mptable_probe, SI_BOOT2_PRESMP, SI_ORDER_FIRST, mptable_probe, 0);
268 * Look for an Intel MP spec table (ie, SMP capable hardware).
276 /* see if EBDA exists */
277 if (ebda_addr != 0) {
278 /* search first 1K of EBDA */
279 target = (u_int32_t)ebda_addr;
280 if ((x = mptable_search_sig(target, 1024 / 4)) > 0)
283 /* last 1K of base memory, effective 'top of base' passed in */
284 target = (u_int32_t)((base_memory - 1) * 1024);
285 if ((x = mptable_search_sig(target, 1024 / 4)) > 0)
289 /* search the BIOS */
290 target = (u_int32_t)BIOS_BASE;
291 if ((x = mptable_search_sig(target, BIOS_COUNT)) > 0)
294 /* search the extended BIOS */
295 target = (u_int32_t)BIOS_BASE2;
296 if ((x = mptable_search_sig(target, BIOS_COUNT)) > 0)
304 mptable_iterate_entries(const mpcth_t cth, mptable_iter_func func, void *arg)
306 int count, total_size;
307 const void *position;
309 KKASSERT(cth->base_table_length >= sizeof(struct MPCTH));
310 total_size = cth->base_table_length - sizeof(struct MPCTH);
311 position = (const uint8_t *)cth + sizeof(struct MPCTH);
312 count = cth->entry_count;
317 KKASSERT(total_size >= 0);
318 if (total_size == 0) {
319 kprintf("invalid base MP table, "
320 "entry count and length mismatch\n");
324 type = *(const uint8_t *)position;
326 case 0: /* processor_entry */
327 case 1: /* bus_entry */
328 case 2: /* io_apic_entry */
329 case 3: /* int_entry */
330 case 4: /* int_entry */
333 kprintf("unknown base MP table entry type %d\n", type);
337 if (total_size < basetable_entry_types[type].length) {
338 kprintf("invalid base MP table length, "
339 "does not contain all entries\n");
342 total_size -= basetable_entry_types[type].length;
344 error = func(arg, position, type);
348 position = (const uint8_t *)position +
349 basetable_entry_types[type].length;
355 * look for the MP spec signature
358 /* string defined by the Intel MP Spec as identifying the MP table */
359 #define MP_SIG 0x5f504d5f /* _MP_ */
360 #define NEXT(X) ((X) += 4)
362 mptable_search_sig(u_int32_t target, int count)
368 KKASSERT(target != 0);
370 map_size = count * sizeof(u_int32_t);
371 addr = pmap_mapdev((vm_paddr_t)target, map_size);
374 for (x = 0; x < count; NEXT(x)) {
375 if (addr[x] == MP_SIG) {
376 /* make array index a byte index */
377 ret = target + (x * sizeof(u_int32_t));
382 pmap_unmapdev((vm_offset_t)addr, map_size);
386 static int processor_entry (const struct PROCENTRY *entry, int cpu);
389 * Check if we should perform a hyperthreading "fix-up" to
390 * enumerate any logical CPU's that aren't already listed
393 * XXX: We assume that all of the physical CPUs in the
394 * system have the same number of logical CPUs.
396 * XXX: We assume that APIC ID's are allocated such that
397 * the APIC ID's for a physical processor are aligned
398 * with the number of logical CPU's in the processor.
401 mptable_hyperthread_fixup(cpumask_t id_mask, int cpu_count)
403 int i, id, lcpus_max, logical_cpus;
405 if ((cpu_feature & CPUID_HTT) == 0)
408 lcpus_max = (cpu_procinfo & CPUID_HTT_CORES) >> 16;
412 if (cpu_vendor_id == CPU_VENDOR_INTEL) {
414 * INSTRUCTION SET REFERENCE, A-M (#253666)
415 * Page 3-181, Table 3-20
416 * "The nearest power-of-2 integer that is not smaller
417 * than EBX[23:16] is the number of unique initial APIC
418 * IDs reserved for addressing different logical
419 * processors in a physical package."
422 if ((1 << i) >= lcpus_max) {
429 KKASSERT(cpu_count != 0);
430 if (cpu_count == lcpus_max) {
431 /* We have nothing to fix */
433 } else if (cpu_count == 1) {
434 /* XXX this may be incorrect */
435 logical_cpus = lcpus_max;
440 * Calculate the distances between two nearest
441 * APIC IDs. If all such distances are same,
442 * then it is the number of missing cpus that
443 * we are going to fill later.
445 dist = cur = prev = -1;
446 for (id = 0; id < MAXCPU; ++id) {
447 if (CPUMASK_TESTBIT(id_mask, id) == 0)
452 int new_dist = cur - prev;
458 * Make sure that all distances
459 * between two nearest APIC IDs
462 if (dist != new_dist)
470 /* Must be power of 2 */
471 if (dist & (dist - 1))
474 /* Can't exceed CPU package capacity */
475 if (dist > lcpus_max)
476 logical_cpus = lcpus_max;
482 * For each APIC ID of a CPU that is set in the mask,
483 * scan the other candidate APIC ID's for this
484 * physical processor. If any of those ID's are
485 * already in the table, then kill the fixup.
487 for (id = 0; id < MAXCPU; id++) {
488 if (CPUMASK_TESTBIT(id_mask, id) == 0)
490 /* First, make sure we are on a logical_cpus boundary. */
491 if (id % logical_cpus != 0)
493 for (i = id + 1; i < id + logical_cpus; i++)
494 if (CPUMASK_TESTBIT(id_mask, i) != 0)
501 mptable_map(struct mptable_pos *mpt)
505 vm_size_t cth_mapsz = 0;
507 KKASSERT(mptable_fps_phyaddr != 0);
509 bzero(mpt, sizeof(*mpt));
511 fps = pmap_mapdev(mptable_fps_phyaddr, sizeof(*fps));
514 * Map configuration table header to get
515 * the base table size
517 cth = pmap_mapdev(fps->pap, sizeof(*cth));
518 cth_mapsz = cth->base_table_length;
519 pmap_unmapdev((vm_offset_t)cth, sizeof(*cth));
521 if (cth_mapsz < sizeof(*cth)) {
522 kprintf("invalid base MP table length %d\n",
524 pmap_unmapdev((vm_offset_t)fps, sizeof(*fps));
531 cth = pmap_mapdev(fps->pap, cth_mapsz);
536 mpt->mp_cth_mapsz = cth_mapsz;
542 mptable_unmap(struct mptable_pos *mpt)
544 if (mpt->mp_cth != NULL) {
545 pmap_unmapdev((vm_offset_t)mpt->mp_cth, mpt->mp_cth_mapsz);
547 mpt->mp_cth_mapsz = 0;
549 if (mpt->mp_fps != NULL) {
550 pmap_unmapdev((vm_offset_t)mpt->mp_fps, sizeof(*mpt->mp_fps));
556 processor_entry(const struct PROCENTRY *entry, int cpu)
560 /* check for usability */
561 if (!(entry->cpu_flags & PROCENTRY_FLAG_EN))
564 /* check for BSP flag */
565 if (entry->cpu_flags & PROCENTRY_FLAG_BP) {
566 lapic_set_cpuid(0, entry->apic_id);
567 return 0; /* its already been counted */
570 /* add another AP to list, if less than max number of CPUs */
571 else if (cpu < MAXCPU) {
572 lapic_set_cpuid(cpu, entry->apic_id);
580 mptable_bus_info_callback(void *xarg, const void *pos, int type)
582 struct mptable_bus_info *bus_info = xarg;
583 const struct BUSENTRY *ent;
584 struct mptable_bus *bus;
590 TAILQ_FOREACH(bus, &bus_info->mbi_list, mb_link) {
591 if (bus->mb_id == ent->bus_id) {
592 kprintf("mptable_bus_info_alloc: duplicated bus id "
593 "(%d)\n", bus->mb_id);
599 if (strncmp(ent->bus_type, "PCI", 3) == 0) {
600 bus = kmalloc(sizeof(*bus), M_TEMP, M_WAITOK | M_ZERO);
601 bus->mb_type = MPTABLE_BUS_PCI;
602 } else if (strncmp(ent->bus_type, "ISA", 3) == 0) {
603 bus = kmalloc(sizeof(*bus), M_TEMP, M_WAITOK | M_ZERO);
604 bus->mb_type = MPTABLE_BUS_ISA;
608 bus->mb_id = ent->bus_id;
609 TAILQ_INSERT_TAIL(&bus_info->mbi_list, bus, mb_link);
615 mptable_bus_info_alloc(const mpcth_t cth, struct mptable_bus_info *bus_info)
619 bzero(bus_info, sizeof(*bus_info));
620 TAILQ_INIT(&bus_info->mbi_list);
622 error = mptable_iterate_entries(cth, mptable_bus_info_callback, bus_info);
624 mptable_bus_info_free(bus_info);
628 mptable_bus_info_free(struct mptable_bus_info *bus_info)
630 struct mptable_bus *bus;
632 while ((bus = TAILQ_FIRST(&bus_info->mbi_list)) != NULL) {
633 TAILQ_REMOVE(&bus_info->mbi_list, bus, mb_link);
638 struct mptable_lapic_cbarg1 {
641 u_int ht_apicid_mask;
645 mptable_lapic_pass1_callback(void *xarg, const void *pos, int type)
647 const struct PROCENTRY *ent;
648 struct mptable_lapic_cbarg1 *arg = xarg;
654 if ((ent->cpu_flags & PROCENTRY_FLAG_EN) == 0)
658 if (ent->apic_id < 64) {
659 arg->ht_apicid_mask |= 1UL << ent->apic_id;
660 } else if (arg->ht_fixup) {
661 kprintf("MPTABLE: lapic id > 64, disable HTT fixup\n");
667 struct mptable_lapic_cbarg2 {
674 mptable_lapic_pass2_callback(void *xarg, const void *pos, int type)
676 const struct PROCENTRY *ent;
677 struct mptable_lapic_cbarg2 *arg = xarg;
683 if (ent->cpu_flags & PROCENTRY_FLAG_BP) {
684 KKASSERT(!arg->found_bsp);
688 if (processor_entry(ent, arg->cpu))
691 if (arg->logical_cpus) {
692 struct PROCENTRY proc;
696 * Create fake mptable processor entries
697 * and feed them to processor_entry() to
698 * enumerate the logical CPUs.
700 bzero(&proc, sizeof(proc));
702 proc.cpu_flags = (force_enable) ? PROCENTRY_FLAG_EN : ent->cpu_flags;
703 proc.apic_id = ent->apic_id;
705 for (i = 1; i < arg->logical_cpus; i++) {
707 processor_entry(&proc, arg->cpu);
715 mptable_lapic_default(void)
717 int ap_apicid, bsp_apicid;
719 naps = 1; /* exclude BSP */
721 /* Map local apic before the id field is accessed */
722 lapic_map(DEFAULT_APIC_BASE);
724 bsp_apicid = LAPIC_READID;
725 ap_apicid = (bsp_apicid == 0) ? 1 : 0;
728 lapic_set_cpuid(0, bsp_apicid);
729 /* one and only AP */
730 lapic_set_cpuid(1, ap_apicid);
736 * APIC ID <-> CPU ID mappings
739 mptable_lapic_enumerate(struct lapic_enumerator *e)
741 struct mptable_pos mpt;
742 struct mptable_lapic_cbarg1 arg1;
743 struct mptable_lapic_cbarg2 arg2;
745 int error, logical_cpus = 0;
746 vm_paddr_t lapic_addr;
748 if (mptable_use_default) {
749 mptable_lapic_default();
753 error = mptable_map(&mpt);
755 panic("mptable_lapic_enumerate mptable_map failed");
756 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
760 /* Save local apic address */
761 lapic_addr = cth->apic_address;
762 KKASSERT(lapic_addr != 0);
765 * Find out how many CPUs do we have
767 bzero(&arg1, sizeof(arg1));
768 arg1.ht_fixup = 1; /* Apply ht fixup by default */
770 error = mptable_iterate_entries(cth,
771 mptable_lapic_pass1_callback, &arg1);
773 panic("mptable_iterate_entries(lapic_pass1) failed");
774 KKASSERT(arg1.cpu_count != 0);
776 /* See if we need to fixup HT logical CPUs. */
778 * XXX fixup for cpus >= 32 ? XXX
783 CPUMASK_ASSZERO(mask);
784 mask.ary[0] = arg1.ht_apicid_mask;
785 logical_cpus = mptable_hyperthread_fixup(mask, arg1.cpu_count);
786 if (logical_cpus != 0)
787 arg1.cpu_count *= logical_cpus;
789 naps = arg1.cpu_count - 1; /* subtract the BSP */
792 * Link logical CPU id to local apic id
794 bzero(&arg2, sizeof(arg2));
796 arg2.logical_cpus = logical_cpus;
798 error = mptable_iterate_entries(cth,
799 mptable_lapic_pass2_callback, &arg2);
801 panic("mptable_iterate_entries(lapic_pass2) failed");
802 KKASSERT(arg2.found_bsp);
805 lapic_map(lapic_addr);
812 struct mptable_lapic_probe_cbarg {
818 mptable_lapic_probe_callback(void *xarg, const void *pos, int type)
820 const struct PROCENTRY *ent;
821 struct mptable_lapic_probe_cbarg *arg = xarg;
827 if ((ent->cpu_flags & PROCENTRY_FLAG_EN) == 0)
831 if (ent->apic_id == APICID_MAX) {
832 kprintf("MPTABLE: invalid LAPIC apic id %d\n",
837 if (ent->cpu_flags & PROCENTRY_FLAG_BP) {
838 if (arg->found_bsp) {
839 kprintf("more than one BSP in base MP table\n");
848 mptable_lapic_probe(struct lapic_enumerator *e)
850 struct mptable_pos mpt;
851 struct mptable_lapic_probe_cbarg arg;
855 if (mptable_fps_phyaddr == 0)
858 if (mptable_use_default)
861 error = mptable_map(&mpt);
864 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
869 if (cth->apic_address == 0)
872 bzero(&arg, sizeof(arg));
873 error = mptable_iterate_entries(cth,
874 mptable_lapic_probe_callback, &arg);
876 if (arg.cpu_count == 0) {
877 kprintf("MP table contains no processor entries\n");
879 } else if (!arg.found_bsp) {
880 kprintf("MP table does not contains BSP entry\n");
889 static struct lapic_enumerator mptable_lapic_enumerator = {
890 .lapic_prio = LAPIC_ENUM_PRIO_MPTABLE,
891 .lapic_probe = mptable_lapic_probe,
892 .lapic_enumerate = mptable_lapic_enumerate
896 mptable_lapic_enum_register(void)
898 lapic_enumerator_register(&mptable_lapic_enumerator);
900 SYSINIT(mptable_lapic, SI_BOOT2_PRESMP, SI_ORDER_ANY,
901 mptable_lapic_enum_register, 0);
904 mptable_ioapic_list_callback(void *xarg, const void *pos, int type)
906 const struct IOAPICENTRY *ent;
907 struct mptable_ioapic *nioapic, *ioapic;
913 if ((ent->apic_flags & IOAPICENTRY_FLAG_EN) == 0)
916 if (ent->apic_address == 0) {
917 kprintf("mptable_ioapic_create_list: zero IOAPIC addr\n");
920 if (ent->apic_id == APICID_MAX) {
921 kprintf("mptable_ioapic_create_list: "
922 "invalid IOAPIC apic id %d\n", ent->apic_id);
926 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
927 if (ioapic->mio_apic_id == ent->apic_id) {
928 kprintf("mptable_ioapic_create_list: duplicated "
929 "apic id %d\n", ioapic->mio_apic_id);
932 if (ioapic->mio_addr == ent->apic_address) {
933 kprintf("mptable_ioapic_create_list: overlapped "
934 "IOAPIC addr 0x%08x", ioapic->mio_addr);
939 nioapic = kmalloc(sizeof(*nioapic), M_DEVBUF, M_WAITOK | M_ZERO);
940 nioapic->mio_apic_id = ent->apic_id;
941 nioapic->mio_addr = ent->apic_address;
944 * Create IOAPIC list in ascending order of APIC ID
946 TAILQ_FOREACH_REVERSE(ioapic, &mptable_ioapic_list,
947 mptable_ioapic_list, mio_link) {
948 if (nioapic->mio_apic_id > ioapic->mio_apic_id) {
949 TAILQ_INSERT_AFTER(&mptable_ioapic_list,
950 ioapic, nioapic, mio_link);
955 TAILQ_INSERT_HEAD(&mptable_ioapic_list, nioapic, mio_link);
961 mptable_ioapic_create_list(void)
963 struct mptable_ioapic *ioapic;
964 struct mptable_pos mpt;
967 if (mptable_fps_phyaddr == 0)
970 if (mptable_use_default) {
971 ioapic = kmalloc(sizeof(*ioapic), M_DEVBUF, M_WAITOK | M_ZERO);
973 ioapic->mio_apic_id = 0; /* NOTE: any value is ok here */
974 ioapic->mio_addr = 0xfec00000; /* XXX magic number */
976 TAILQ_INSERT_HEAD(&mptable_ioapic_list, ioapic, mio_link);
980 error = mptable_map(&mpt);
982 panic("mptable_ioapic_create_list: mptable_map failed");
983 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
985 error = mptable_iterate_entries(mpt.mp_cth,
986 mptable_ioapic_list_callback, NULL);
988 while ((ioapic = TAILQ_FIRST(&mptable_ioapic_list)) != NULL) {
989 TAILQ_REMOVE(&mptable_ioapic_list, ioapic, mio_link);
990 kfree(ioapic, M_DEVBUF);
996 * Assign index number for each IOAPIC
999 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1000 ioapic->mio_idx = idx;
1004 mptable_unmap(&mpt);
1006 SYSINIT(mptable_ioapic_list, SI_BOOT2_PRESMP, SI_ORDER_SECOND,
1007 mptable_ioapic_create_list, 0);
1010 mptable_pci_int_callback(void *xarg, const void *pos, int type)
1012 const struct mptable_bus_info *bus_info = xarg;
1013 const struct mptable_ioapic *ioapic;
1014 const struct mptable_bus *bus;
1015 struct mptable_pci_int *pci_int;
1016 const struct INTENTRY *ent;
1017 int pci_pin, pci_dev;
1023 if (ent->int_type != 0)
1026 TAILQ_FOREACH(bus, &bus_info->mbi_list, mb_link) {
1027 if (bus->mb_type == MPTABLE_BUS_PCI &&
1028 bus->mb_id == ent->src_bus_id)
1034 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1035 if (ioapic->mio_apic_id == ent->dst_apic_id)
1038 if (ioapic == NULL) {
1040 static char intdis_warned[64];
1041 int apic_id = ent->dst_apic_id;
1044 if (apic_id < 0 || apic_id >= sizeof(intdis_warned)) {
1046 } else if (intdis_warned[apic_id] == 0) {
1047 intdis_warned[apic_id] = 1;
1051 kprintf("MPTABLE: warning PCI int dst apic id "
1052 "%d does not exist\n", apic_id);
1058 pci_pin = ent->src_bus_irq & 0x3;
1059 pci_dev = (ent->src_bus_irq >> 2) & 0x1f;
1061 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link) {
1062 if (pci_int->mpci_bus == ent->src_bus_id &&
1063 pci_int->mpci_dev == pci_dev &&
1064 pci_int->mpci_pin == pci_pin) {
1065 if (pci_int->mpci_ioapic_idx == ioapic->mio_idx &&
1066 pci_int->mpci_ioapic_pin == ent->dst_apic_int) {
1067 kprintf("MPTABLE: warning duplicated "
1068 "PCI int entry for "
1069 "bus %d, dev %d, pin %d\n",
1075 kprintf("mptable_pci_int_register: "
1076 "conflict PCI int entry for "
1077 "bus %d, dev %d, pin %d, "
1078 "IOAPIC %d.%d -> %d.%d\n",
1082 pci_int->mpci_ioapic_idx,
1083 pci_int->mpci_ioapic_pin,
1091 pci_int = kmalloc(sizeof(*pci_int), M_DEVBUF, M_WAITOK | M_ZERO);
1093 pci_int->mpci_bus = ent->src_bus_id;
1094 pci_int->mpci_dev = pci_dev;
1095 pci_int->mpci_pin = pci_pin;
1096 pci_int->mpci_ioapic_idx = ioapic->mio_idx;
1097 pci_int->mpci_ioapic_pin = ent->dst_apic_int;
1099 TAILQ_INSERT_TAIL(&mptable_pci_int_list, pci_int, mpci_link);
1105 mptable_pci_int_register(void)
1107 struct mptable_bus_info bus_info;
1108 const struct mptable_bus *bus;
1109 struct mptable_pci_int *pci_int;
1110 struct mptable_pos mpt;
1111 int error, force_pci0, npcibus;
1114 if (mptable_fps_phyaddr == 0)
1117 if (mptable_use_default)
1120 if (TAILQ_EMPTY(&mptable_ioapic_list))
1123 error = mptable_map(&mpt);
1125 panic("mptable_pci_int_register: mptable_map failed");
1126 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
1130 mptable_bus_info_alloc(cth, &bus_info);
1131 if (TAILQ_EMPTY(&bus_info.mbi_list))
1136 TAILQ_FOREACH(bus, &bus_info.mbi_list, mb_link) {
1137 if (bus->mb_type == MPTABLE_BUS_PCI)
1141 mptable_bus_info_free(&bus_info);
1143 } else if (npcibus == 1) {
1147 error = mptable_iterate_entries(cth,
1148 mptable_pci_int_callback, &bus_info);
1150 mptable_bus_info_free(&bus_info);
1153 while ((pci_int = TAILQ_FIRST(&mptable_pci_int_list)) != NULL) {
1154 TAILQ_REMOVE(&mptable_pci_int_list, pci_int, mpci_link);
1155 kfree(pci_int, M_DEVBUF);
1161 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link)
1162 pci_int->mpci_bus = 0;
1165 mptable_unmap(&mpt);
1167 SYSINIT(mptable_pci, SI_BOOT2_PRESMP, SI_ORDER_ANY,
1168 mptable_pci_int_register, 0);
1170 struct mptable_ioapic_probe_cbarg {
1171 const struct mptable_bus_info *bus_info;
1175 mptable_ioapic_probe_callback(void *xarg, const void *pos, int type)
1177 struct mptable_ioapic_probe_cbarg *arg = xarg;
1178 const struct mptable_ioapic *ioapic;
1179 const struct mptable_bus *bus;
1180 const struct INTENTRY *ent;
1186 if (ent->int_type != 0)
1189 TAILQ_FOREACH(bus, &arg->bus_info->mbi_list, mb_link) {
1190 if (bus->mb_type == MPTABLE_BUS_ISA &&
1191 bus->mb_id == ent->src_bus_id)
1197 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1198 if (ioapic->mio_apic_id == ent->dst_apic_id)
1201 if (ioapic == NULL) {
1202 kprintf("MPTABLE: warning ISA int dst apic id %d "
1203 "does not exist\n", ent->dst_apic_id);
1207 /* XXX magic number */
1208 if (ent->src_bus_irq >= ISA_IRQ_CNT) {
1209 kprintf("mptable_ioapic_probe: invalid ISA irq (%d)\n",
1217 mptable_ioapic_probe(struct ioapic_enumerator *e)
1219 struct mptable_ioapic_probe_cbarg arg;
1220 struct mptable_bus_info bus_info;
1221 struct mptable_pos mpt;
1225 if (mptable_fps_phyaddr == 0)
1228 if (mptable_use_default)
1231 if (TAILQ_EMPTY(&mptable_ioapic_list))
1234 error = mptable_map(&mpt);
1236 panic("mptable_ioapic_probe: mptable_map failed");
1237 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
1241 mptable_bus_info_alloc(cth, &bus_info);
1243 bzero(&arg, sizeof(arg));
1244 arg.bus_info = &bus_info;
1246 error = mptable_iterate_entries(cth,
1247 mptable_ioapic_probe_callback, &arg);
1249 mptable_bus_info_free(&bus_info);
1250 mptable_unmap(&mpt);
1255 struct mptable_ioapic_int_cbarg {
1256 const struct mptable_bus_info *bus_info;
1261 mptable_ioapic_int_callback(void *xarg, const void *pos, int type)
1263 struct mptable_ioapic_int_cbarg *arg = xarg;
1264 const struct mptable_ioapic *ioapic;
1265 const struct mptable_bus *bus;
1266 const struct INTENTRY *ent;
1275 if (ent->int_type != 0)
1278 TAILQ_FOREACH(bus, &arg->bus_info->mbi_list, mb_link) {
1279 if (bus->mb_type == MPTABLE_BUS_ISA &&
1280 bus->mb_id == ent->src_bus_id)
1286 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1287 if (ioapic->mio_apic_id == ent->dst_apic_id)
1290 if (ioapic == NULL) {
1291 kprintf("MPTABLE: warning ISA int dst apic id %d "
1292 "does not exist\n", ent->dst_apic_id);
1296 if (ent->dst_apic_int >= ioapic->mio_npin) {
1297 panic("mptable_ioapic_enumerate: invalid I/O APIC "
1298 "pin %d, should be < %d",
1299 ent->dst_apic_int, ioapic->mio_npin);
1301 gsi = ioapic->mio_gsi_base + ent->dst_apic_int;
1303 if (ent->src_bus_irq != gsi) {
1305 kprintf("MPTABLE: INTSRC irq %d -> GSI %d\n",
1306 ent->src_bus_irq, gsi);
1308 ioapic_intsrc(ent->src_bus_irq, gsi,
1309 INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
1315 mptable_ioapic_enumerate(struct ioapic_enumerator *e)
1317 struct mptable_bus_info bus_info;
1318 struct mptable_ioapic *ioapic;
1319 struct mptable_pos mpt;
1323 KKASSERT(mptable_fps_phyaddr != 0);
1324 KKASSERT(!TAILQ_EMPTY(&mptable_ioapic_list));
1326 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1327 const struct mptable_ioapic *prev_ioapic;
1331 addr = ioapic_map(ioapic->mio_addr);
1333 ver = ioapic_read(addr, IOAPIC_VER);
1334 ioapic->mio_npin = ((ver & IOART_VER_MAXREDIR)
1335 >> MAXREDIRSHIFT) + 1;
1337 prev_ioapic = TAILQ_PREV(ioapic,
1338 mptable_ioapic_list, mio_link);
1339 if (prev_ioapic == NULL) {
1340 ioapic->mio_gsi_base = 0;
1342 ioapic->mio_gsi_base =
1343 prev_ioapic->mio_gsi_base +
1344 prev_ioapic->mio_npin;
1346 ioapic_add(addr, ioapic->mio_gsi_base, ioapic->mio_npin);
1349 kprintf("MPTABLE: IOAPIC addr 0x%08x, "
1350 "apic id %d, idx %d, gsi base %d, npin %d\n",
1352 ioapic->mio_apic_id,
1354 ioapic->mio_gsi_base,
1359 if (mptable_use_default) {
1361 kprintf("MPTABLE: INTSRC irq 0 -> GSI 2 (default)\n");
1362 ioapic_intsrc(0, 2, INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
1366 error = mptable_map(&mpt);
1368 panic("mptable_ioapic_probe: mptable_map failed");
1369 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
1373 mptable_bus_info_alloc(cth, &bus_info);
1375 if (TAILQ_EMPTY(&bus_info.mbi_list)) {
1377 kprintf("MPTABLE: INTSRC irq 0 -> GSI 2 (no bus)\n");
1378 ioapic_intsrc(0, 2, INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
1380 struct mptable_ioapic_int_cbarg arg;
1382 bzero(&arg, sizeof(arg));
1383 arg.bus_info = &bus_info;
1385 error = mptable_iterate_entries(cth,
1386 mptable_ioapic_int_callback, &arg);
1388 panic("mptable_ioapic_int failed");
1390 if (arg.ioapic_nint == 0) {
1392 kprintf("MPTABLE: INTSRC irq 0 -> GSI 2 "
1395 ioapic_intsrc(0, 2, INTR_TRIGGER_EDGE,
1396 INTR_POLARITY_HIGH);
1400 mptable_bus_info_free(&bus_info);
1402 mptable_unmap(&mpt);
1405 static struct ioapic_enumerator mptable_ioapic_enumerator = {
1406 .ioapic_prio = IOAPIC_ENUM_PRIO_MPTABLE,
1407 .ioapic_probe = mptable_ioapic_probe,
1408 .ioapic_enumerate = mptable_ioapic_enumerate
1412 mptable_ioapic_enum_register(void)
1414 ioapic_enumerator_register(&mptable_ioapic_enumerator);
1416 SYSINIT(mptable_ioapic, SI_BOOT2_PRESMP, SI_ORDER_ANY,
1417 mptable_ioapic_enum_register, 0);
1420 mptable_pci_int_dump(void)
1422 const struct mptable_pci_int *pci_int;
1427 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link) {
1428 kprintf("MPTABLE: %d:%d INT%c -> IOAPIC %d.%d\n",
1431 pci_int->mpci_pin + 'A',
1432 pci_int->mpci_ioapic_idx,
1433 pci_int->mpci_ioapic_pin);
1438 mptable_pci_int_route(int bus, int dev, int pin, int intline)
1440 const struct mptable_pci_int *pci_int;
1444 --pin; /* zero based */
1446 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link) {
1447 if (pci_int->mpci_bus == bus &&
1448 pci_int->mpci_dev == dev &&
1449 pci_int->mpci_pin == pin)
1452 if (pci_int != NULL) {
1455 gsi = ioapic_gsi(pci_int->mpci_ioapic_idx,
1456 pci_int->mpci_ioapic_pin);
1458 irq = machintr_legacy_intr_find_bygsi(gsi,
1459 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
1463 if (irq < 0 && intline >= 0) {
1464 kprintf("MPTABLE: fixed interrupt routing "
1465 "for %d:%d INT%c\n", bus, dev, pin + 'A');
1466 irq = machintr_legacy_intr_find(intline,
1467 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
1470 if (irq >= 0 && bootverbose) {
1471 kprintf("MPTABLE: %d:%d INT%c routed to irq %d\n",
1472 bus, dev, pin + 'A', irq);