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>
39 #include <sys/mplock2.h>
42 #include <vm/vm_param.h>
44 #include <vm/vm_kern.h>
45 #include <vm/vm_extern.h>
47 #include <vm/vm_map.h>
53 #include <machine/smp.h>
54 #include <machine_base/isa/isa_intr.h>
55 #include <machine_base/apic/apicreg.h>
56 #include <machine_base/apic/apicvar.h>
57 #include <machine/atomic.h>
58 #include <machine/cpufunc.h>
59 #include <machine/cputypes.h>
60 #include <machine_base/apic/lapic.h>
61 #include <machine_base/apic/ioapic.h>
62 #include <machine/psl.h>
63 #include <machine/segments.h>
64 #include <machine/tss.h>
65 #include <machine/specialreg.h>
66 #include <machine/globaldata.h>
67 #include <machine/pmap_inval.h>
68 #include <machine/mptable.h>
70 #include <machine/md_var.h> /* setidt() */
71 #include <machine_base/icu/icu.h> /* IPIs */
72 #include <machine_base/apic/ioapic_abi.h>
73 #include <machine/intr_machdep.h> /* IPIs */
75 extern u_int base_memory;
76 extern u_long ebda_addr;
77 extern int imcr_present;
80 static int force_enable = 0;
81 TUNABLE_INT("hw.lapic_force_enable", &force_enable);
83 #define BIOS_BASE (0xf0000)
84 #define BIOS_BASE2 (0xe0000)
85 #define BIOS_SIZE (0x10000)
86 #define BIOS_COUNT (BIOS_SIZE/4)
88 #define PROCENTRY_FLAG_EN 0x01
89 #define PROCENTRY_FLAG_BP 0x02
90 #define IOAPICENTRY_FLAG_EN 0x01
93 /* MP Floating Pointer Structure */
94 typedef struct MPFPS {
107 /* MP Configuration Table Header */
108 typedef struct MPCTH {
110 u_short base_table_length;
114 u_char product_id[12];
115 u_int32_t oem_table_pointer;
116 u_short oem_table_size;
118 u_int32_t apic_address;
119 u_short extended_table_length;
120 u_char extended_table_checksum;
125 typedef struct PROCENTRY {
130 u_int32_t cpu_signature;
131 u_int32_t feature_flags;
136 typedef struct BUSENTRY {
142 typedef struct IOAPICENTRY {
147 u_int32_t apic_address;
148 } *io_apic_entry_ptr;
150 typedef struct INTENTRY {
160 /* descriptions of MP basetable entries */
161 typedef struct BASETABLE_ENTRY {
170 vm_size_t mp_cth_mapsz;
173 #define MPTABLE_POS_USE_DEFAULT(mpt) \
174 ((mpt)->mp_fps->mpfb1 != 0 || (mpt)->mp_cth == NULL)
178 int mb_type; /* MPTABLE_BUS_ */
179 TAILQ_ENTRY(mptable_bus) mb_link;
182 #define MPTABLE_BUS_ISA 0
183 #define MPTABLE_BUS_PCI 1
185 struct mptable_bus_info {
186 TAILQ_HEAD(, mptable_bus) mbi_list;
189 struct mptable_pci_int {
196 TAILQ_ENTRY(mptable_pci_int) mpci_link;
199 struct mptable_ioapic {
205 TAILQ_ENTRY(mptable_ioapic) mio_link;
208 typedef int (*mptable_iter_func)(void *, const void *, int);
210 static int mptable_iterate_entries(const mpcth_t,
211 mptable_iter_func, void *);
212 static int mptable_search(void);
213 static long mptable_search_sig(u_int32_t target, int count);
214 static int mptable_hyperthread_fixup(cpumask_t, int);
215 static int mptable_map(struct mptable_pos *);
216 static void mptable_unmap(struct mptable_pos *);
217 static void mptable_bus_info_alloc(const mpcth_t,
218 struct mptable_bus_info *);
219 static void mptable_bus_info_free(struct mptable_bus_info *);
221 static int mptable_lapic_probe(struct lapic_enumerator *);
222 static int mptable_lapic_enumerate(struct lapic_enumerator *);
223 static void mptable_lapic_default(void);
225 static int mptable_ioapic_probe(struct ioapic_enumerator *);
226 static void mptable_ioapic_enumerate(struct ioapic_enumerator *);
228 static basetable_entry basetable_entry_types[] =
230 {0, 20, "Processor"},
237 static vm_paddr_t mptable_fps_phyaddr;
238 static int mptable_use_default;
239 static TAILQ_HEAD(mptable_pci_int_list, mptable_pci_int) mptable_pci_int_list =
240 TAILQ_HEAD_INITIALIZER(mptable_pci_int_list);
241 static TAILQ_HEAD(mptable_ioapic_list, mptable_ioapic) mptable_ioapic_list =
242 TAILQ_HEAD_INITIALIZER(mptable_ioapic_list);
247 struct mptable_pos mpt;
250 KKASSERT(mptable_fps_phyaddr == 0);
252 mptable_fps_phyaddr = mptable_search();
253 if (mptable_fps_phyaddr == 0)
256 error = mptable_map(&mpt);
258 mptable_fps_phyaddr = 0;
262 if (MPTABLE_POS_USE_DEFAULT(&mpt)) {
263 kprintf("MPTABLE: use default configuration\n");
264 mptable_use_default = 1;
266 if (mpt.mp_fps->mpfb2 & 0x80)
271 SYSINIT(mptable_probe, SI_BOOT2_PRESMP, SI_ORDER_FIRST, mptable_probe, 0);
274 * Look for an Intel MP spec table (ie, SMP capable hardware).
282 /* see if EBDA exists */
283 if (ebda_addr != 0) {
284 /* search first 1K of EBDA */
285 target = (u_int32_t)ebda_addr;
286 if ((x = mptable_search_sig(target, 1024 / 4)) > 0)
289 /* last 1K of base memory, effective 'top of base' passed in */
290 target = (u_int32_t)(base_memory - 0x400);
291 if ((x = mptable_search_sig(target, 1024 / 4)) > 0)
295 /* search the BIOS */
296 target = (u_int32_t)BIOS_BASE;
297 if ((x = mptable_search_sig(target, BIOS_COUNT)) > 0)
300 /* search the extended BIOS */
301 target = (u_int32_t)BIOS_BASE2;
302 if ((x = mptable_search_sig(target, BIOS_COUNT)) > 0)
310 mptable_iterate_entries(const mpcth_t cth, mptable_iter_func func, void *arg)
312 int count, total_size;
313 const void *position;
315 KKASSERT(cth->base_table_length >= sizeof(struct MPCTH));
316 total_size = cth->base_table_length - sizeof(struct MPCTH);
317 position = (const uint8_t *)cth + sizeof(struct MPCTH);
318 count = cth->entry_count;
323 KKASSERT(total_size >= 0);
324 if (total_size == 0) {
325 kprintf("invalid base MP table, "
326 "entry count and length mismatch\n");
330 type = *(const uint8_t *)position;
332 case 0: /* processor_entry */
333 case 1: /* bus_entry */
334 case 2: /* io_apic_entry */
335 case 3: /* int_entry */
336 case 4: /* int_entry */
339 kprintf("unknown base MP table entry type %d\n", type);
343 if (total_size < basetable_entry_types[type].length) {
344 kprintf("invalid base MP table length, "
345 "does not contain all entries\n");
348 total_size -= basetable_entry_types[type].length;
350 error = func(arg, position, type);
354 position = (const uint8_t *)position +
355 basetable_entry_types[type].length;
361 * look for the MP spec signature
364 /* string defined by the Intel MP Spec as identifying the MP table */
365 #define MP_SIG 0x5f504d5f /* _MP_ */
366 #define NEXT(X) ((X) += 4)
368 mptable_search_sig(u_int32_t target, int count)
374 KKASSERT(target != 0);
376 map_size = count * sizeof(u_int32_t);
377 addr = pmap_mapdev((vm_paddr_t)target, map_size);
380 for (x = 0; x < count; NEXT(x)) {
381 if (addr[x] == MP_SIG) {
382 /* make array index a byte index */
383 ret = target + (x * sizeof(u_int32_t));
388 pmap_unmapdev((vm_offset_t)addr, map_size);
392 static int processor_entry (const struct PROCENTRY *entry, int cpu);
395 * Check if we should perform a hyperthreading "fix-up" to
396 * enumerate any logical CPU's that aren't already listed
399 * XXX: We assume that all of the physical CPUs in the
400 * system have the same number of logical CPUs.
402 * XXX: We assume that APIC ID's are allocated such that
403 * the APIC ID's for a physical processor are aligned
404 * with the number of logical CPU's in the processor.
407 mptable_hyperthread_fixup(cpumask_t id_mask, int cpu_count)
409 int i, id, lcpus_max, logical_cpus;
411 if ((cpu_feature & CPUID_HTT) == 0)
414 lcpus_max = (cpu_procinfo & CPUID_HTT_CORES) >> 16;
418 if (cpu_vendor_id == CPU_VENDOR_INTEL) {
420 * INSTRUCTION SET REFERENCE, A-M (#253666)
421 * Page 3-181, Table 3-20
422 * "The nearest power-of-2 integer that is not smaller
423 * than EBX[23:16] is the number of unique initial APIC
424 * IDs reserved for addressing different logical
425 * processors in a physical package."
428 if ((1 << i) >= lcpus_max) {
435 KKASSERT(cpu_count != 0);
436 if (cpu_count == lcpus_max) {
437 /* We have nothing to fix */
439 } else if (cpu_count == 1) {
440 /* XXX this may be incorrect */
441 logical_cpus = lcpus_max;
446 * Calculate the distances between two nearest
447 * APIC IDs. If all such distances are same,
448 * then it is the number of missing cpus that
449 * we are going to fill later.
451 dist = cur = prev = -1;
452 for (id = 0; id < MAXCPU; ++id) {
453 if ((id_mask & CPUMASK(id)) == 0)
458 int new_dist = cur - prev;
464 * Make sure that all distances
465 * between two nearest APIC IDs
468 if (dist != new_dist)
476 /* Must be power of 2 */
477 if (dist & (dist - 1))
480 /* Can't exceed CPU package capacity */
481 if (dist > lcpus_max)
482 logical_cpus = lcpus_max;
488 * For each APIC ID of a CPU that is set in the mask,
489 * scan the other candidate APIC ID's for this
490 * physical processor. If any of those ID's are
491 * already in the table, then kill the fixup.
493 for (id = 0; id < MAXCPU; id++) {
494 if ((id_mask & CPUMASK(id)) == 0)
496 /* First, make sure we are on a logical_cpus boundary. */
497 if (id % logical_cpus != 0)
499 for (i = id + 1; i < id + logical_cpus; i++)
500 if ((id_mask & CPUMASK(i)) != 0)
507 mptable_map(struct mptable_pos *mpt)
511 vm_size_t cth_mapsz = 0;
513 KKASSERT(mptable_fps_phyaddr != 0);
515 bzero(mpt, sizeof(*mpt));
517 fps = pmap_mapdev(mptable_fps_phyaddr, sizeof(*fps));
520 * Map configuration table header to get
521 * the base table size
523 cth = pmap_mapdev(fps->pap, sizeof(*cth));
524 cth_mapsz = cth->base_table_length;
525 pmap_unmapdev((vm_offset_t)cth, sizeof(*cth));
527 if (cth_mapsz < sizeof(*cth)) {
528 kprintf("invalid base MP table length %d\n",
530 pmap_unmapdev((vm_offset_t)fps, sizeof(*fps));
537 cth = pmap_mapdev(fps->pap, cth_mapsz);
542 mpt->mp_cth_mapsz = cth_mapsz;
548 mptable_unmap(struct mptable_pos *mpt)
550 if (mpt->mp_cth != NULL) {
551 pmap_unmapdev((vm_offset_t)mpt->mp_cth, mpt->mp_cth_mapsz);
553 mpt->mp_cth_mapsz = 0;
555 if (mpt->mp_fps != NULL) {
556 pmap_unmapdev((vm_offset_t)mpt->mp_fps, sizeof(*mpt->mp_fps));
562 processor_entry(const struct PROCENTRY *entry, int cpu)
566 /* check for usability */
567 if (!(entry->cpu_flags & PROCENTRY_FLAG_EN))
570 /* check for BSP flag */
571 if (entry->cpu_flags & PROCENTRY_FLAG_BP) {
572 lapic_set_cpuid(0, entry->apic_id);
573 return 0; /* its already been counted */
576 /* add another AP to list, if less than max number of CPUs */
577 else if (cpu < MAXCPU) {
578 lapic_set_cpuid(cpu, entry->apic_id);
586 mptable_bus_info_callback(void *xarg, const void *pos, int type)
588 struct mptable_bus_info *bus_info = xarg;
589 const struct BUSENTRY *ent;
590 struct mptable_bus *bus;
596 TAILQ_FOREACH(bus, &bus_info->mbi_list, mb_link) {
597 if (bus->mb_id == ent->bus_id) {
598 kprintf("mptable_bus_info_alloc: duplicated bus id "
599 "(%d)\n", bus->mb_id);
605 if (strncmp(ent->bus_type, "PCI", 3) == 0) {
606 bus = kmalloc(sizeof(*bus), M_TEMP, M_WAITOK | M_ZERO);
607 bus->mb_type = MPTABLE_BUS_PCI;
608 } else if (strncmp(ent->bus_type, "ISA", 3) == 0) {
609 bus = kmalloc(sizeof(*bus), M_TEMP, M_WAITOK | M_ZERO);
610 bus->mb_type = MPTABLE_BUS_ISA;
614 bus->mb_id = ent->bus_id;
615 TAILQ_INSERT_TAIL(&bus_info->mbi_list, bus, mb_link);
621 mptable_bus_info_alloc(const mpcth_t cth, struct mptable_bus_info *bus_info)
625 bzero(bus_info, sizeof(*bus_info));
626 TAILQ_INIT(&bus_info->mbi_list);
628 error = mptable_iterate_entries(cth, mptable_bus_info_callback, bus_info);
630 mptable_bus_info_free(bus_info);
634 mptable_bus_info_free(struct mptable_bus_info *bus_info)
636 struct mptable_bus *bus;
638 while ((bus = TAILQ_FIRST(&bus_info->mbi_list)) != NULL) {
639 TAILQ_REMOVE(&bus_info->mbi_list, bus, mb_link);
644 struct mptable_lapic_cbarg1 {
647 u_int ht_apicid_mask;
651 mptable_lapic_pass1_callback(void *xarg, const void *pos, int type)
653 const struct PROCENTRY *ent;
654 struct mptable_lapic_cbarg1 *arg = xarg;
660 if ((ent->cpu_flags & PROCENTRY_FLAG_EN) == 0)
664 if (ent->apic_id < 64) {
665 arg->ht_apicid_mask |= 1UL << ent->apic_id;
666 } else if (arg->ht_fixup) {
667 kprintf("MPTABLE: lapic id > 64, disable HTT fixup\n");
673 struct mptable_lapic_cbarg2 {
680 mptable_lapic_pass2_callback(void *xarg, const void *pos, int type)
682 const struct PROCENTRY *ent;
683 struct mptable_lapic_cbarg2 *arg = xarg;
689 if (ent->cpu_flags & PROCENTRY_FLAG_BP) {
690 KKASSERT(!arg->found_bsp);
694 if (processor_entry(ent, arg->cpu))
697 if (arg->logical_cpus) {
698 struct PROCENTRY proc;
702 * Create fake mptable processor entries
703 * and feed them to processor_entry() to
704 * enumerate the logical CPUs.
706 bzero(&proc, sizeof(proc));
708 proc.cpu_flags = (force_enable) ? PROCENTRY_FLAG_EN : ent->cpu_flags;
709 proc.apic_id = ent->apic_id;
711 for (i = 1; i < arg->logical_cpus; i++) {
713 processor_entry(&proc, arg->cpu);
721 mptable_lapic_default(void)
723 int ap_apicid, bsp_apicid;
725 naps = 1; /* exclude BSP */
727 /* Map local apic before the id field is accessed */
728 lapic_map(DEFAULT_APIC_BASE);
730 bsp_apicid = APIC_ID(lapic->id);
731 ap_apicid = (bsp_apicid == 0) ? 1 : 0;
734 lapic_set_cpuid(0, bsp_apicid);
735 /* one and only AP */
736 lapic_set_cpuid(1, ap_apicid);
742 * APIC ID <-> CPU ID mappings
745 mptable_lapic_enumerate(struct lapic_enumerator *e)
747 struct mptable_pos mpt;
748 struct mptable_lapic_cbarg1 arg1;
749 struct mptable_lapic_cbarg2 arg2;
751 int error, logical_cpus = 0;
752 vm_paddr_t lapic_addr;
754 if (mptable_use_default) {
755 mptable_lapic_default();
759 error = mptable_map(&mpt);
761 panic("mptable_lapic_enumerate mptable_map failed");
762 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
766 /* Save local apic address */
767 lapic_addr = cth->apic_address;
768 KKASSERT(lapic_addr != 0);
771 * Find out how many CPUs do we have
773 bzero(&arg1, sizeof(arg1));
774 arg1.ht_fixup = 1; /* Apply ht fixup by default */
776 error = mptable_iterate_entries(cth,
777 mptable_lapic_pass1_callback, &arg1);
779 panic("mptable_iterate_entries(lapic_pass1) failed");
780 KKASSERT(arg1.cpu_count != 0);
782 /* See if we need to fixup HT logical CPUs. */
784 logical_cpus = mptable_hyperthread_fixup(arg1.ht_apicid_mask,
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) {
1039 kprintf("MPTABLE: warning PCI int dst apic id %d "
1040 "does not exist\n", ent->dst_apic_id);
1044 pci_pin = ent->src_bus_irq & 0x3;
1045 pci_dev = (ent->src_bus_irq >> 2) & 0x1f;
1047 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link) {
1048 if (pci_int->mpci_bus == ent->src_bus_id &&
1049 pci_int->mpci_dev == pci_dev &&
1050 pci_int->mpci_pin == pci_pin) {
1051 if (pci_int->mpci_ioapic_idx == ioapic->mio_idx &&
1052 pci_int->mpci_ioapic_pin == ent->dst_apic_int) {
1053 kprintf("MPTABLE: warning duplicated "
1054 "PCI int entry for "
1055 "bus %d, dev %d, pin %d\n",
1061 kprintf("mptable_pci_int_register: "
1062 "conflict PCI int entry for "
1063 "bus %d, dev %d, pin %d, "
1064 "IOAPIC %d.%d -> %d.%d\n",
1068 pci_int->mpci_ioapic_idx,
1069 pci_int->mpci_ioapic_pin,
1077 pci_int = kmalloc(sizeof(*pci_int), M_DEVBUF, M_WAITOK | M_ZERO);
1079 pci_int->mpci_bus = ent->src_bus_id;
1080 pci_int->mpci_dev = pci_dev;
1081 pci_int->mpci_pin = pci_pin;
1082 pci_int->mpci_ioapic_idx = ioapic->mio_idx;
1083 pci_int->mpci_ioapic_pin = ent->dst_apic_int;
1085 TAILQ_INSERT_TAIL(&mptable_pci_int_list, pci_int, mpci_link);
1091 mptable_pci_int_register(void)
1093 struct mptable_bus_info bus_info;
1094 const struct mptable_bus *bus;
1095 struct mptable_pci_int *pci_int;
1096 struct mptable_pos mpt;
1097 int error, force_pci0, npcibus;
1100 if (mptable_fps_phyaddr == 0)
1103 if (mptable_use_default)
1106 if (TAILQ_EMPTY(&mptable_ioapic_list))
1109 error = mptable_map(&mpt);
1111 panic("mptable_pci_int_register: mptable_map failed");
1112 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
1116 mptable_bus_info_alloc(cth, &bus_info);
1117 if (TAILQ_EMPTY(&bus_info.mbi_list))
1122 TAILQ_FOREACH(bus, &bus_info.mbi_list, mb_link) {
1123 if (bus->mb_type == MPTABLE_BUS_PCI)
1127 mptable_bus_info_free(&bus_info);
1129 } else if (npcibus == 1) {
1133 error = mptable_iterate_entries(cth,
1134 mptable_pci_int_callback, &bus_info);
1136 mptable_bus_info_free(&bus_info);
1139 while ((pci_int = TAILQ_FIRST(&mptable_pci_int_list)) != NULL) {
1140 TAILQ_REMOVE(&mptable_pci_int_list, pci_int, mpci_link);
1141 kfree(pci_int, M_DEVBUF);
1147 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link)
1148 pci_int->mpci_bus = 0;
1151 mptable_unmap(&mpt);
1153 SYSINIT(mptable_pci, SI_BOOT2_PRESMP, SI_ORDER_ANY,
1154 mptable_pci_int_register, 0);
1156 struct mptable_ioapic_probe_cbarg {
1157 const struct mptable_bus_info *bus_info;
1161 mptable_ioapic_probe_callback(void *xarg, const void *pos, int type)
1163 struct mptable_ioapic_probe_cbarg *arg = xarg;
1164 const struct mptable_ioapic *ioapic;
1165 const struct mptable_bus *bus;
1166 const struct INTENTRY *ent;
1172 if (ent->int_type != 0)
1175 TAILQ_FOREACH(bus, &arg->bus_info->mbi_list, mb_link) {
1176 if (bus->mb_type == MPTABLE_BUS_ISA &&
1177 bus->mb_id == ent->src_bus_id)
1183 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1184 if (ioapic->mio_apic_id == ent->dst_apic_id)
1187 if (ioapic == NULL) {
1188 kprintf("MPTABLE: warning ISA int dst apic id %d "
1189 "does not exist\n", ent->dst_apic_id);
1193 /* XXX magic number */
1194 if (ent->src_bus_irq >= ISA_IRQ_CNT) {
1195 kprintf("mptable_ioapic_probe: invalid ISA irq (%d)\n",
1203 mptable_ioapic_probe(struct ioapic_enumerator *e)
1205 struct mptable_ioapic_probe_cbarg arg;
1206 struct mptable_bus_info bus_info;
1207 struct mptable_pos mpt;
1211 if (mptable_fps_phyaddr == 0)
1214 if (mptable_use_default)
1217 if (TAILQ_EMPTY(&mptable_ioapic_list))
1220 error = mptable_map(&mpt);
1222 panic("mptable_ioapic_probe: mptable_map failed");
1223 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
1227 mptable_bus_info_alloc(cth, &bus_info);
1229 bzero(&arg, sizeof(arg));
1230 arg.bus_info = &bus_info;
1232 error = mptable_iterate_entries(cth,
1233 mptable_ioapic_probe_callback, &arg);
1235 mptable_bus_info_free(&bus_info);
1236 mptable_unmap(&mpt);
1241 struct mptable_ioapic_int_cbarg {
1242 const struct mptable_bus_info *bus_info;
1247 mptable_ioapic_int_callback(void *xarg, const void *pos, int type)
1249 struct mptable_ioapic_int_cbarg *arg = xarg;
1250 const struct mptable_ioapic *ioapic;
1251 const struct mptable_bus *bus;
1252 const struct INTENTRY *ent;
1261 if (ent->int_type != 0)
1264 TAILQ_FOREACH(bus, &arg->bus_info->mbi_list, mb_link) {
1265 if (bus->mb_type == MPTABLE_BUS_ISA &&
1266 bus->mb_id == ent->src_bus_id)
1272 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1273 if (ioapic->mio_apic_id == ent->dst_apic_id)
1276 if (ioapic == NULL) {
1277 kprintf("MPTABLE: warning ISA int dst apic id %d "
1278 "does not exist\n", ent->dst_apic_id);
1282 if (ent->dst_apic_int >= ioapic->mio_npin) {
1283 panic("mptable_ioapic_enumerate: invalid I/O APIC "
1284 "pin %d, should be < %d",
1285 ent->dst_apic_int, ioapic->mio_npin);
1287 gsi = ioapic->mio_gsi_base + ent->dst_apic_int;
1289 if (ent->src_bus_irq != gsi) {
1291 kprintf("MPTABLE: INTSRC irq %d -> GSI %d\n",
1292 ent->src_bus_irq, gsi);
1294 ioapic_intsrc(ent->src_bus_irq, gsi,
1295 INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
1301 mptable_ioapic_enumerate(struct ioapic_enumerator *e)
1303 struct mptable_bus_info bus_info;
1304 struct mptable_ioapic *ioapic;
1305 struct mptable_pos mpt;
1309 KKASSERT(mptable_fps_phyaddr != 0);
1310 KKASSERT(!TAILQ_EMPTY(&mptable_ioapic_list));
1312 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1313 const struct mptable_ioapic *prev_ioapic;
1317 addr = ioapic_map(ioapic->mio_addr);
1319 ver = ioapic_read(addr, IOAPIC_VER);
1320 ioapic->mio_npin = ((ver & IOART_VER_MAXREDIR)
1321 >> MAXREDIRSHIFT) + 1;
1323 prev_ioapic = TAILQ_PREV(ioapic,
1324 mptable_ioapic_list, mio_link);
1325 if (prev_ioapic == NULL) {
1326 ioapic->mio_gsi_base = 0;
1328 ioapic->mio_gsi_base =
1329 prev_ioapic->mio_gsi_base +
1330 prev_ioapic->mio_npin;
1332 ioapic_add(addr, ioapic->mio_gsi_base, ioapic->mio_npin);
1335 kprintf("MPTABLE: IOAPIC addr 0x%08x, "
1336 "apic id %d, idx %d, gsi base %d, npin %d\n",
1338 ioapic->mio_apic_id,
1340 ioapic->mio_gsi_base,
1345 if (mptable_use_default) {
1347 kprintf("MPTABLE: INTSRC irq 0 -> GSI 2 (default)\n");
1348 ioapic_intsrc(0, 2, INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
1352 error = mptable_map(&mpt);
1354 panic("mptable_ioapic_probe: mptable_map failed");
1355 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
1359 mptable_bus_info_alloc(cth, &bus_info);
1361 if (TAILQ_EMPTY(&bus_info.mbi_list)) {
1363 kprintf("MPTABLE: INTSRC irq 0 -> GSI 2 (no bus)\n");
1364 ioapic_intsrc(0, 2, INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
1366 struct mptable_ioapic_int_cbarg arg;
1368 bzero(&arg, sizeof(arg));
1369 arg.bus_info = &bus_info;
1371 error = mptable_iterate_entries(cth,
1372 mptable_ioapic_int_callback, &arg);
1374 panic("mptable_ioapic_int failed");
1376 if (arg.ioapic_nint == 0) {
1378 kprintf("MPTABLE: INTSRC irq 0 -> GSI 2 "
1381 ioapic_intsrc(0, 2, INTR_TRIGGER_EDGE,
1382 INTR_POLARITY_HIGH);
1386 mptable_bus_info_free(&bus_info);
1388 mptable_unmap(&mpt);
1391 static struct ioapic_enumerator mptable_ioapic_enumerator = {
1392 .ioapic_prio = IOAPIC_ENUM_PRIO_MPTABLE,
1393 .ioapic_probe = mptable_ioapic_probe,
1394 .ioapic_enumerate = mptable_ioapic_enumerate
1398 mptable_ioapic_enum_register(void)
1400 ioapic_enumerator_register(&mptable_ioapic_enumerator);
1402 SYSINIT(mptable_ioapic, SI_BOOT2_PRESMP, SI_ORDER_ANY,
1403 mptable_ioapic_enum_register, 0);
1406 mptable_pci_int_dump(void)
1408 const struct mptable_pci_int *pci_int;
1413 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link) {
1414 kprintf("MPTABLE: %d:%d INT%c -> IOAPIC %d.%d\n",
1417 pci_int->mpci_pin + 'A',
1418 pci_int->mpci_ioapic_idx,
1419 pci_int->mpci_ioapic_pin);
1424 mptable_pci_int_route(int bus, int dev, int pin, int intline)
1426 const struct mptable_pci_int *pci_int;
1430 --pin; /* zero based */
1432 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link) {
1433 if (pci_int->mpci_bus == bus &&
1434 pci_int->mpci_dev == dev &&
1435 pci_int->mpci_pin == pin)
1438 if (pci_int != NULL) {
1441 gsi = ioapic_gsi(pci_int->mpci_ioapic_idx,
1442 pci_int->mpci_ioapic_pin);
1444 irq = machintr_legacy_intr_find_bygsi(gsi,
1445 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
1451 kprintf("MPTABLE: fixed interrupt routing "
1452 "for %d:%d INT%c\n", bus, dev, pin + 'A');
1455 irq = machintr_legacy_intr_find(intline,
1456 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
1459 if (irq >= 0 && bootverbose) {
1460 kprintf("MPTABLE: %d:%d INT%c routed to irq %d\n",
1461 bus, dev, pin + 'A', irq);