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>
51 #include <sys/mplock2.h>
53 #include <machine/smp.h>
54 #include <machine_base/isa/isa_intr.h>
55 #include <machine_base/apic/apicreg.h>
56 #include <machine/atomic.h>
57 #include <machine/cpufunc.h>
58 #include <machine/cputypes.h>
59 #include <machine_base/apic/ioapic_abi.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/intr_machdep.h> /* IPIs */
74 extern u_long ebda_addr;
75 extern u_int base_memory;
76 extern int imcr_present;
79 #define BIOS_BASE (0xf0000)
80 #define BIOS_BASE2 (0xe0000)
81 #define BIOS_SIZE (0x10000)
82 #define BIOS_COUNT (BIOS_SIZE/4)
84 #define PROCENTRY_FLAG_EN 0x01
85 #define PROCENTRY_FLAG_BP 0x02
86 #define IOAPICENTRY_FLAG_EN 0x01
88 /* MP Floating Pointer Structure */
89 typedef struct MPFPS {
102 /* MP Configuration Table Header */
103 typedef struct MPCTH {
105 u_short base_table_length;
109 u_char product_id[12];
110 void *oem_table_pointer;
111 u_short oem_table_size;
114 u_short extended_table_length;
115 u_char extended_table_checksum;
120 typedef struct PROCENTRY {
125 u_long cpu_signature;
126 u_long feature_flags;
131 typedef struct BUSENTRY {
137 typedef struct IOAPICENTRY {
143 } *io_apic_entry_ptr;
145 typedef struct INTENTRY {
155 /* descriptions of MP basetable entries */
156 typedef struct BASETABLE_ENTRY {
165 vm_size_t mp_cth_mapsz;
168 #define MPTABLE_POS_USE_DEFAULT(mpt) \
169 ((mpt)->mp_fps->mpfb1 != 0 || (mpt)->mp_cth == NULL)
173 int mb_type; /* MPTABLE_BUS_ */
174 TAILQ_ENTRY(mptable_bus) mb_link;
177 #define MPTABLE_BUS_ISA 0
178 #define MPTABLE_BUS_PCI 1
180 struct mptable_bus_info {
181 TAILQ_HEAD(, mptable_bus) mbi_list;
184 struct mptable_pci_int {
191 TAILQ_ENTRY(mptable_pci_int) mpci_link;
194 struct mptable_ioapic {
200 TAILQ_ENTRY(mptable_ioapic) mio_link;
203 typedef int (*mptable_iter_func)(void *, const void *, int);
205 static int mptable_iterate_entries(const mpcth_t,
206 mptable_iter_func, void *);
207 static int mptable_search(void);
208 static int mptable_search_sig(u_int32_t target, int count);
209 static int mptable_hyperthread_fixup(cpumask_t, int);
210 static int mptable_map(struct mptable_pos *);
211 static void mptable_unmap(struct mptable_pos *);
212 static void mptable_bus_info_alloc(const mpcth_t,
213 struct mptable_bus_info *);
214 static void mptable_bus_info_free(struct mptable_bus_info *);
216 static int mptable_lapic_probe(struct lapic_enumerator *);
217 static void mptable_lapic_enumerate(struct lapic_enumerator *);
218 static void mptable_lapic_default(void);
220 static int mptable_ioapic_probe(struct ioapic_enumerator *);
221 static void mptable_ioapic_enumerate(struct ioapic_enumerator *);
223 static basetable_entry basetable_entry_types[] =
225 {0, 20, "Processor"},
232 static vm_paddr_t mptable_fps_phyaddr;
233 static int mptable_use_default;
234 static TAILQ_HEAD(mptable_pci_int_list, mptable_pci_int) mptable_pci_int_list =
235 TAILQ_HEAD_INITIALIZER(mptable_pci_int_list);
236 static TAILQ_HEAD(mptable_ioapic_list, mptable_ioapic) mptable_ioapic_list =
237 TAILQ_HEAD_INITIALIZER(mptable_ioapic_list);
242 struct mptable_pos mpt;
245 KKASSERT(mptable_fps_phyaddr == 0);
247 mptable_fps_phyaddr = mptable_search();
248 if (mptable_fps_phyaddr == 0)
251 error = mptable_map(&mpt);
253 mptable_fps_phyaddr = 0;
257 if (MPTABLE_POS_USE_DEFAULT(&mpt)) {
258 kprintf("MPTABLE: use default configuration\n");
259 mptable_use_default = 1;
261 if (mpt.mp_fps->mpfb2 & 0x80)
266 SYSINIT(mptable_probe, SI_BOOT2_PRESMP, SI_ORDER_FIRST, mptable_probe, 0);
269 * Look for an Intel MP spec table (ie, SMP capable hardware).
277 /* see if EBDA exists */
278 if (ebda_addr != 0) {
279 /* search first 1K of EBDA */
280 target = (u_int32_t)ebda_addr;
281 if ((x = mptable_search_sig(target, 1024 / 4)) > 0)
284 /* last 1K of base memory, effective 'top of base' passed in */
285 target = (u_int32_t)(base_memory - 0x400);
286 if ((x = mptable_search_sig(target, 1024 / 4)) > 0)
290 /* search the BIOS */
291 target = (u_int32_t)BIOS_BASE;
292 if ((x = mptable_search_sig(target, BIOS_COUNT)) > 0)
295 /* search the extended BIOS */
296 target = (u_int32_t)BIOS_BASE2;
297 if ((x = mptable_search_sig(target, BIOS_COUNT)) > 0)
305 mptable_iterate_entries(const mpcth_t cth, mptable_iter_func func, void *arg)
307 int count, total_size;
308 const void *position;
310 KKASSERT(cth->base_table_length >= sizeof(struct MPCTH));
311 total_size = cth->base_table_length - sizeof(struct MPCTH);
312 position = (const uint8_t *)cth + sizeof(struct MPCTH);
313 count = cth->entry_count;
318 KKASSERT(total_size >= 0);
319 if (total_size == 0) {
320 kprintf("invalid base MP table, "
321 "entry count and length mismatch\n");
325 type = *(const uint8_t *)position;
327 case 0: /* processor_entry */
328 case 1: /* bus_entry */
329 case 2: /* io_apic_entry */
330 case 3: /* int_entry */
331 case 4: /* int_entry */
334 kprintf("unknown base MP table entry type %d\n", type);
338 if (total_size < basetable_entry_types[type].length) {
339 kprintf("invalid base MP table length, "
340 "does not contain all entries\n");
343 total_size -= basetable_entry_types[type].length;
345 error = func(arg, position, type);
349 position = (const uint8_t *)position +
350 basetable_entry_types[type].length;
356 * look for the MP spec signature
359 /* string defined by the Intel MP Spec as identifying the MP table */
360 #define MP_SIG 0x5f504d5f /* _MP_ */
361 #define NEXT(X) ((X) += 4)
363 mptable_search_sig(u_int32_t target, int count)
369 KKASSERT(target != 0);
371 map_size = count * sizeof(u_int32_t);
372 addr = pmap_mapdev((vm_paddr_t)target, map_size);
375 for (x = 0; x < count; NEXT(x)) {
376 if (addr[x] == MP_SIG) {
377 /* make array index a byte index */
378 ret = target + (x * sizeof(u_int32_t));
383 pmap_unmapdev((vm_offset_t)addr, map_size);
387 static int processor_entry (const struct PROCENTRY *entry, int cpu);
390 * Check if we should perform a hyperthreading "fix-up" to
391 * enumerate any logical CPU's that aren't already listed
394 * XXX: We assume that all of the physical CPUs in the
395 * system have the same number of logical CPUs.
397 * XXX: We assume that APIC ID's are allocated such that
398 * the APIC ID's for a physical processor are aligned
399 * with the number of logical CPU's in the processor.
402 mptable_hyperthread_fixup(cpumask_t id_mask, int cpu_count)
404 int i, id, lcpus_max, logical_cpus;
406 if ((cpu_feature & CPUID_HTT) == 0)
409 lcpus_max = (cpu_procinfo & CPUID_HTT_CORES) >> 16;
413 if (cpu_vendor_id == CPU_VENDOR_INTEL) {
415 * INSTRUCTION SET REFERENCE, A-M (#253666)
416 * Page 3-181, Table 3-20
417 * "The nearest power-of-2 integer that is not smaller
418 * than EBX[23:16] is the number of unique initial APIC
419 * IDs reserved for addressing different logical
420 * processors in a physical package."
423 if ((1 << i) >= lcpus_max) {
430 KKASSERT(cpu_count != 0);
431 if (cpu_count == lcpus_max) {
432 /* We have nothing to fix */
434 } else if (cpu_count == 1) {
435 /* XXX this may be incorrect */
436 logical_cpus = lcpus_max;
441 * Calculate the distances between two nearest
442 * APIC IDs. If all such distances are same,
443 * then it is the number of missing cpus that
444 * we are going to fill later.
446 dist = cur = prev = -1;
447 for (id = 0; id < MAXCPU; ++id) {
448 if ((id_mask & CPUMASK(id)) == 0)
453 int new_dist = cur - prev;
459 * Make sure that all distances
460 * between two nearest APIC IDs
463 if (dist != new_dist)
471 /* Must be power of 2 */
472 if (dist & (dist - 1))
475 /* Can't exceed CPU package capacity */
476 if (dist > lcpus_max)
477 logical_cpus = lcpus_max;
483 * For each APIC ID of a CPU that is set in the mask,
484 * scan the other candidate APIC ID's for this
485 * physical processor. If any of those ID's are
486 * already in the table, then kill the fixup.
488 for (id = 0; id < MAXCPU; id++) {
489 if ((id_mask & CPUMASK(id)) == 0)
491 /* First, make sure we are on a logical_cpus boundary. */
492 if (id % logical_cpus != 0)
494 for (i = id + 1; i < id + logical_cpus; i++)
495 if ((id_mask & CPUMASK(i)) != 0)
502 mptable_map(struct mptable_pos *mpt)
506 vm_size_t cth_mapsz = 0;
508 KKASSERT(mptable_fps_phyaddr != 0);
510 bzero(mpt, sizeof(*mpt));
512 fps = pmap_mapdev(mptable_fps_phyaddr, sizeof(*fps));
515 * Map configuration table header to get
516 * the base table size
518 cth = pmap_mapdev(fps->pap, sizeof(*cth));
519 cth_mapsz = cth->base_table_length;
520 pmap_unmapdev((vm_offset_t)cth, sizeof(*cth));
522 if (cth_mapsz < sizeof(*cth)) {
523 kprintf("invalid base MP table length %d\n",
525 pmap_unmapdev((vm_offset_t)fps, sizeof(*fps));
532 cth = pmap_mapdev(fps->pap, cth_mapsz);
537 mpt->mp_cth_mapsz = cth_mapsz;
543 mptable_unmap(struct mptable_pos *mpt)
545 if (mpt->mp_cth != NULL) {
546 pmap_unmapdev((vm_offset_t)mpt->mp_cth, mpt->mp_cth_mapsz);
548 mpt->mp_cth_mapsz = 0;
550 if (mpt->mp_fps != NULL) {
551 pmap_unmapdev((vm_offset_t)mpt->mp_fps, sizeof(*mpt->mp_fps));
557 processor_entry(const struct PROCENTRY *entry, int cpu)
561 /* check for usability */
562 if (!(entry->cpu_flags & PROCENTRY_FLAG_EN))
565 /* check for BSP flag */
566 if (entry->cpu_flags & PROCENTRY_FLAG_BP) {
567 lapic_set_cpuid(0, entry->apic_id);
568 return 0; /* its already been counted */
571 /* add another AP to list, if less than max number of CPUs */
572 else if (cpu < MAXCPU) {
573 lapic_set_cpuid(cpu, entry->apic_id);
581 mptable_bus_info_callback(void *xarg, const void *pos, int type)
583 struct mptable_bus_info *bus_info = xarg;
584 const struct BUSENTRY *ent;
585 struct mptable_bus *bus;
591 TAILQ_FOREACH(bus, &bus_info->mbi_list, mb_link) {
592 if (bus->mb_id == ent->bus_id) {
593 kprintf("mptable_bus_info_alloc: duplicated bus id "
594 "(%d)\n", bus->mb_id);
600 if (strncmp(ent->bus_type, "PCI", 3) == 0) {
601 bus = kmalloc(sizeof(*bus), M_TEMP, M_WAITOK | M_ZERO);
602 bus->mb_type = MPTABLE_BUS_PCI;
603 } else if (strncmp(ent->bus_type, "ISA", 3) == 0) {
604 bus = kmalloc(sizeof(*bus), M_TEMP, M_WAITOK | M_ZERO);
605 bus->mb_type = MPTABLE_BUS_ISA;
609 bus->mb_id = ent->bus_id;
610 TAILQ_INSERT_TAIL(&bus_info->mbi_list, bus, mb_link);
616 mptable_bus_info_alloc(const mpcth_t cth, struct mptable_bus_info *bus_info)
620 bzero(bus_info, sizeof(*bus_info));
621 TAILQ_INIT(&bus_info->mbi_list);
623 error = mptable_iterate_entries(cth, mptable_bus_info_callback, bus_info);
625 mptable_bus_info_free(bus_info);
629 mptable_bus_info_free(struct mptable_bus_info *bus_info)
631 struct mptable_bus *bus;
633 while ((bus = TAILQ_FIRST(&bus_info->mbi_list)) != NULL) {
634 TAILQ_REMOVE(&bus_info->mbi_list, bus, mb_link);
639 struct mptable_lapic_cbarg1 {
642 u_int ht_apicid_mask;
646 mptable_lapic_pass1_callback(void *xarg, const void *pos, int type)
648 const struct PROCENTRY *ent;
649 struct mptable_lapic_cbarg1 *arg = xarg;
655 if ((ent->cpu_flags & PROCENTRY_FLAG_EN) == 0)
659 if (ent->apic_id < 32) {
660 arg->ht_apicid_mask |= 1 << ent->apic_id;
661 } else if (arg->ht_fixup) {
662 kprintf("MPTABLE: lapic id > 32, disable HTT fixup\n");
668 struct mptable_lapic_cbarg2 {
675 mptable_lapic_pass2_callback(void *xarg, const void *pos, int type)
677 const struct PROCENTRY *ent;
678 struct mptable_lapic_cbarg2 *arg = xarg;
684 if (ent->cpu_flags & PROCENTRY_FLAG_BP) {
685 KKASSERT(!arg->found_bsp);
689 if (processor_entry(ent, arg->cpu))
692 if (arg->logical_cpus) {
693 struct PROCENTRY proc;
697 * Create fake mptable processor entries
698 * and feed them to processor_entry() to
699 * enumerate the logical CPUs.
701 bzero(&proc, sizeof(proc));
703 proc.cpu_flags = PROCENTRY_FLAG_EN;
704 proc.apic_id = ent->apic_id;
706 for (i = 1; i < arg->logical_cpus; i++) {
708 processor_entry(&proc, arg->cpu);
716 mptable_lapic_default(void)
718 int ap_apicid, bsp_apicid;
720 naps = 1; /* exclude BSP */
722 /* Map local apic before the id field is accessed */
723 lapic_map(DEFAULT_APIC_BASE);
725 bsp_apicid = APIC_ID(lapic->id);
726 ap_apicid = (bsp_apicid == 0) ? 1 : 0;
729 lapic_set_cpuid(0, bsp_apicid);
730 /* one and only AP */
731 lapic_set_cpuid(1, ap_apicid);
737 * APIC ID <-> CPU ID mappings
740 mptable_lapic_enumerate(struct lapic_enumerator *e)
742 struct mptable_pos mpt;
743 struct mptable_lapic_cbarg1 arg1;
744 struct mptable_lapic_cbarg2 arg2;
746 int error, logical_cpus = 0;
747 vm_paddr_t lapic_addr;
749 if (mptable_use_default) {
750 mptable_lapic_default();
754 error = mptable_map(&mpt);
756 panic("mptable_lapic_enumerate mptable_map failed");
757 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
761 /* Save local apic address */
762 lapic_addr = (vm_paddr_t)(uintptr_t)cth->apic_address;
763 KKASSERT(lapic_addr != 0);
766 * Find out how many CPUs do we have
768 bzero(&arg1, sizeof(arg1));
769 arg1.ht_fixup = 1; /* Apply ht fixup by default */
771 error = mptable_iterate_entries(cth,
772 mptable_lapic_pass1_callback, &arg1);
774 panic("mptable_iterate_entries(lapic_pass1) failed");
775 KKASSERT(arg1.cpu_count != 0);
777 /* See if we need to fixup HT logical CPUs. */
779 logical_cpus = mptable_hyperthread_fixup(arg1.ht_apicid_mask,
781 if (logical_cpus != 0)
782 arg1.cpu_count *= logical_cpus;
784 naps = arg1.cpu_count - 1; /* subtract the BSP */
787 * Link logical CPU id to local apic id
789 bzero(&arg2, sizeof(arg2));
791 arg2.logical_cpus = logical_cpus;
793 error = mptable_iterate_entries(cth,
794 mptable_lapic_pass2_callback, &arg2);
796 panic("mptable_iterate_entries(lapic_pass2) failed");
797 KKASSERT(arg2.found_bsp);
800 lapic_map(lapic_addr);
805 struct mptable_lapic_probe_cbarg {
811 mptable_lapic_probe_callback(void *xarg, const void *pos, int type)
813 const struct PROCENTRY *ent;
814 struct mptable_lapic_probe_cbarg *arg = xarg;
820 if ((ent->cpu_flags & PROCENTRY_FLAG_EN) == 0)
824 if (ent->cpu_flags & PROCENTRY_FLAG_BP) {
825 if (arg->found_bsp) {
826 kprintf("more than one BSP in base MP table\n");
835 mptable_lapic_probe(struct lapic_enumerator *e)
837 struct mptable_pos mpt;
838 struct mptable_lapic_probe_cbarg arg;
842 if (mptable_fps_phyaddr == 0)
845 if (mptable_use_default)
848 error = mptable_map(&mpt);
851 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
856 if (cth->apic_address == NULL)
859 bzero(&arg, sizeof(arg));
860 error = mptable_iterate_entries(cth,
861 mptable_lapic_probe_callback, &arg);
863 if (arg.cpu_count == 0) {
864 kprintf("MP table contains no processor entries\n");
866 } else if (!arg.found_bsp) {
867 kprintf("MP table does not contains BSP entry\n");
876 static struct lapic_enumerator mptable_lapic_enumerator = {
877 .lapic_prio = LAPIC_ENUM_PRIO_MPTABLE,
878 .lapic_probe = mptable_lapic_probe,
879 .lapic_enumerate = mptable_lapic_enumerate
883 mptable_lapic_enum_register(void)
885 lapic_enumerator_register(&mptable_lapic_enumerator);
887 SYSINIT(mptable_lapic, SI_BOOT2_PRESMP, SI_ORDER_ANY,
888 mptable_lapic_enum_register, 0);
891 mptable_ioapic_list_callback(void *xarg, const void *pos, int type)
893 const struct IOAPICENTRY *ent;
894 struct mptable_ioapic *nioapic, *ioapic;
900 if ((ent->apic_flags & IOAPICENTRY_FLAG_EN) == 0)
903 if (ent->apic_address == NULL) {
904 kprintf("mptable_ioapic_create_list: zero IOAPIC addr\n");
908 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
909 if (ioapic->mio_apic_id == ent->apic_id) {
910 kprintf("mptable_ioapic_create_list: duplicated "
911 "apic id %d\n", ioapic->mio_apic_id);
914 if (ioapic->mio_addr == (uint32_t)ent->apic_address) {
915 kprintf("mptable_ioapic_create_list: overlapped "
916 "IOAPIC addr 0x%08x", ioapic->mio_addr);
921 nioapic = kmalloc(sizeof(*nioapic), M_DEVBUF, M_WAITOK | M_ZERO);
922 nioapic->mio_apic_id = ent->apic_id;
923 nioapic->mio_addr = (uint32_t)ent->apic_address;
926 * Create IOAPIC list in ascending order of APIC ID
928 TAILQ_FOREACH_REVERSE(ioapic, &mptable_ioapic_list,
929 mptable_ioapic_list, mio_link) {
930 if (nioapic->mio_apic_id > ioapic->mio_apic_id) {
931 TAILQ_INSERT_AFTER(&mptable_ioapic_list,
932 ioapic, nioapic, mio_link);
937 TAILQ_INSERT_HEAD(&mptable_ioapic_list, nioapic, mio_link);
943 mptable_ioapic_create_list(void)
945 struct mptable_ioapic *ioapic;
946 struct mptable_pos mpt;
949 if (mptable_fps_phyaddr == 0)
952 if (mptable_use_default) {
953 ioapic = kmalloc(sizeof(*ioapic), M_DEVBUF, M_WAITOK | M_ZERO);
955 ioapic->mio_apic_id = 0; /* NOTE: any value is ok here */
956 ioapic->mio_addr = 0xfec00000; /* XXX magic number */
958 TAILQ_INSERT_HEAD(&mptable_ioapic_list, ioapic, mio_link);
962 error = mptable_map(&mpt);
964 panic("mptable_ioapic_create_list: mptable_map failed");
965 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
967 error = mptable_iterate_entries(mpt.mp_cth,
968 mptable_ioapic_list_callback, NULL);
970 while ((ioapic = TAILQ_FIRST(&mptable_ioapic_list)) != NULL) {
971 TAILQ_REMOVE(&mptable_ioapic_list, ioapic, mio_link);
972 kfree(ioapic, M_DEVBUF);
978 * Assign index number for each IOAPIC
981 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
982 ioapic->mio_idx = idx;
988 SYSINIT(mptable_ioapic_list, SI_BOOT2_PRESMP, SI_ORDER_SECOND,
989 mptable_ioapic_create_list, 0);
992 mptable_pci_int_callback(void *xarg, const void *pos, int type)
994 const struct mptable_bus_info *bus_info = xarg;
995 const struct mptable_ioapic *ioapic;
996 const struct mptable_bus *bus;
997 struct mptable_pci_int *pci_int;
998 const struct INTENTRY *ent;
999 int pci_pin, pci_dev;
1005 if (ent->int_type != 0)
1008 TAILQ_FOREACH(bus, &bus_info->mbi_list, mb_link) {
1009 if (bus->mb_type == MPTABLE_BUS_PCI &&
1010 bus->mb_id == ent->src_bus_id)
1016 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1017 if (ioapic->mio_apic_id == ent->dst_apic_id)
1020 if (ioapic == NULL) {
1021 kprintf("MPTABLE: warning PCI int dst apic id %d "
1022 "does not exist\n", ent->dst_apic_id);
1026 pci_pin = ent->src_bus_irq & 0x3;
1027 pci_dev = (ent->src_bus_irq >> 2) & 0x1f;
1029 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link) {
1030 if (pci_int->mpci_bus == ent->src_bus_id &&
1031 pci_int->mpci_dev == pci_dev &&
1032 pci_int->mpci_pin == pci_pin) {
1033 if (pci_int->mpci_ioapic_idx == ioapic->mio_idx &&
1034 pci_int->mpci_ioapic_pin == ent->dst_apic_int) {
1035 kprintf("MPTABLE: warning duplicated "
1036 "PCI int entry for "
1037 "bus %d, dev %d, pin %d\n",
1043 kprintf("mptable_pci_int_register: "
1044 "conflict PCI int entry for "
1045 "bus %d, dev %d, pin %d, "
1046 "IOAPIC %d.%d -> %d.%d\n",
1050 pci_int->mpci_ioapic_idx,
1051 pci_int->mpci_ioapic_pin,
1059 pci_int = kmalloc(sizeof(*pci_int), M_DEVBUF, M_WAITOK | M_ZERO);
1061 pci_int->mpci_bus = ent->src_bus_id;
1062 pci_int->mpci_dev = pci_dev;
1063 pci_int->mpci_pin = pci_pin;
1064 pci_int->mpci_ioapic_idx = ioapic->mio_idx;
1065 pci_int->mpci_ioapic_pin = ent->dst_apic_int;
1067 TAILQ_INSERT_TAIL(&mptable_pci_int_list, pci_int, mpci_link);
1073 mptable_pci_int_register(void)
1075 struct mptable_bus_info bus_info;
1076 const struct mptable_bus *bus;
1077 struct mptable_pci_int *pci_int;
1078 struct mptable_pos mpt;
1079 int error, force_pci0, npcibus;
1082 if (mptable_fps_phyaddr == 0)
1085 if (mptable_use_default)
1088 if (TAILQ_EMPTY(&mptable_ioapic_list))
1091 error = mptable_map(&mpt);
1093 panic("mptable_pci_int_register: mptable_map failed");
1094 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
1098 mptable_bus_info_alloc(cth, &bus_info);
1099 if (TAILQ_EMPTY(&bus_info.mbi_list))
1104 TAILQ_FOREACH(bus, &bus_info.mbi_list, mb_link) {
1105 if (bus->mb_type == MPTABLE_BUS_PCI)
1109 mptable_bus_info_free(&bus_info);
1111 } else if (npcibus == 1) {
1115 error = mptable_iterate_entries(cth,
1116 mptable_pci_int_callback, &bus_info);
1118 mptable_bus_info_free(&bus_info);
1121 while ((pci_int = TAILQ_FIRST(&mptable_pci_int_list)) != NULL) {
1122 TAILQ_REMOVE(&mptable_pci_int_list, pci_int, mpci_link);
1123 kfree(pci_int, M_DEVBUF);
1129 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link)
1130 pci_int->mpci_bus = 0;
1133 mptable_unmap(&mpt);
1135 SYSINIT(mptable_pci, SI_BOOT2_PRESMP, SI_ORDER_ANY,
1136 mptable_pci_int_register, 0);
1138 struct mptable_ioapic_probe_cbarg {
1139 const struct mptable_bus_info *bus_info;
1143 mptable_ioapic_probe_callback(void *xarg, const void *pos, int type)
1145 struct mptable_ioapic_probe_cbarg *arg = xarg;
1146 const struct mptable_ioapic *ioapic;
1147 const struct mptable_bus *bus;
1148 const struct INTENTRY *ent;
1154 if (ent->int_type != 0)
1157 TAILQ_FOREACH(bus, &arg->bus_info->mbi_list, mb_link) {
1158 if (bus->mb_type == MPTABLE_BUS_ISA &&
1159 bus->mb_id == ent->src_bus_id)
1165 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1166 if (ioapic->mio_apic_id == ent->dst_apic_id)
1169 if (ioapic == NULL) {
1170 kprintf("MPTABLE: warning ISA int dst apic id %d "
1171 "does not exist\n", ent->dst_apic_id);
1175 /* XXX magic number */
1176 if (ent->src_bus_irq >= ISA_IRQ_CNT) {
1177 kprintf("mptable_ioapic_probe: invalid ISA irq (%d)\n",
1185 mptable_ioapic_probe(struct ioapic_enumerator *e)
1187 struct mptable_ioapic_probe_cbarg arg;
1188 struct mptable_bus_info bus_info;
1189 struct mptable_pos mpt;
1193 if (mptable_fps_phyaddr == 0)
1196 if (mptable_use_default)
1199 if (TAILQ_EMPTY(&mptable_ioapic_list))
1202 error = mptable_map(&mpt);
1204 panic("mptable_ioapic_probe: mptable_map failed");
1205 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
1209 mptable_bus_info_alloc(cth, &bus_info);
1211 bzero(&arg, sizeof(arg));
1212 arg.bus_info = &bus_info;
1214 error = mptable_iterate_entries(cth,
1215 mptable_ioapic_probe_callback, &arg);
1217 mptable_bus_info_free(&bus_info);
1218 mptable_unmap(&mpt);
1223 struct mptable_ioapic_int_cbarg {
1224 const struct mptable_bus_info *bus_info;
1229 mptable_ioapic_int_callback(void *xarg, const void *pos, int type)
1231 struct mptable_ioapic_int_cbarg *arg = xarg;
1232 const struct mptable_ioapic *ioapic;
1233 const struct mptable_bus *bus;
1234 const struct INTENTRY *ent;
1243 if (ent->int_type != 0)
1246 TAILQ_FOREACH(bus, &arg->bus_info->mbi_list, mb_link) {
1247 if (bus->mb_type == MPTABLE_BUS_ISA &&
1248 bus->mb_id == ent->src_bus_id)
1254 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1255 if (ioapic->mio_apic_id == ent->dst_apic_id)
1258 if (ioapic == NULL) {
1259 kprintf("MPTABLE: warning ISA int dst apic id %d "
1260 "does not exist\n", ent->dst_apic_id);
1264 if (ent->dst_apic_int >= ioapic->mio_npin) {
1265 panic("mptable_ioapic_enumerate: invalid I/O APIC "
1266 "pin %d, should be < %d",
1267 ent->dst_apic_int, ioapic->mio_npin);
1269 gsi = ioapic->mio_gsi_base + ent->dst_apic_int;
1271 if (ent->src_bus_irq != gsi) {
1273 kprintf("MPTABLE: INTSRC irq %d -> GSI %d\n",
1274 ent->src_bus_irq, gsi);
1276 ioapic_intsrc(ent->src_bus_irq, gsi,
1277 INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
1283 mptable_ioapic_enumerate(struct ioapic_enumerator *e)
1285 struct mptable_bus_info bus_info;
1286 struct mptable_ioapic *ioapic;
1287 struct mptable_pos mpt;
1291 KKASSERT(mptable_fps_phyaddr != 0);
1292 KKASSERT(!TAILQ_EMPTY(&mptable_ioapic_list));
1294 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1295 const struct mptable_ioapic *prev_ioapic;
1299 addr = ioapic_map(ioapic->mio_addr);
1301 ver = ioapic_read(addr, IOAPIC_VER);
1302 ioapic->mio_npin = ((ver & IOART_VER_MAXREDIR)
1303 >> MAXREDIRSHIFT) + 1;
1305 prev_ioapic = TAILQ_PREV(ioapic,
1306 mptable_ioapic_list, mio_link);
1307 if (prev_ioapic == NULL) {
1308 ioapic->mio_gsi_base = 0;
1310 ioapic->mio_gsi_base =
1311 prev_ioapic->mio_gsi_base +
1312 prev_ioapic->mio_npin;
1314 ioapic_add(addr, ioapic->mio_gsi_base,
1318 kprintf("MPTABLE: IOAPIC addr 0x%08x, "
1319 "apic id %d, idx %d, gsi base %d, npin %d\n",
1321 ioapic->mio_apic_id,
1323 ioapic->mio_gsi_base,
1328 if (mptable_use_default) {
1330 kprintf("MPTABLE: INTSRC irq 0 -> GSI 2 (default)\n");
1331 ioapic_intsrc(0, 2, INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
1335 error = mptable_map(&mpt);
1337 panic("mptable_ioapic_probe: mptable_map failed");
1338 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
1342 mptable_bus_info_alloc(cth, &bus_info);
1344 if (TAILQ_EMPTY(&bus_info.mbi_list)) {
1346 kprintf("MPTABLE: INTSRC irq 0 -> GSI 2 (no bus)\n");
1347 ioapic_intsrc(0, 2, INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
1349 struct mptable_ioapic_int_cbarg arg;
1351 bzero(&arg, sizeof(arg));
1352 arg.bus_info = &bus_info;
1354 error = mptable_iterate_entries(cth,
1355 mptable_ioapic_int_callback, &arg);
1357 panic("mptable_ioapic_int failed");
1359 if (arg.ioapic_nint == 0) {
1361 kprintf("MPTABLE: INTSRC irq 0 -> GSI 2 "
1364 ioapic_intsrc(0, 2, INTR_TRIGGER_EDGE,
1365 INTR_POLARITY_HIGH);
1369 mptable_bus_info_free(&bus_info);
1371 mptable_unmap(&mpt);
1374 static struct ioapic_enumerator mptable_ioapic_enumerator = {
1375 .ioapic_prio = IOAPIC_ENUM_PRIO_MPTABLE,
1376 .ioapic_probe = mptable_ioapic_probe,
1377 .ioapic_enumerate = mptable_ioapic_enumerate
1381 mptable_ioapic_enum_register(void)
1383 ioapic_enumerator_register(&mptable_ioapic_enumerator);
1385 SYSINIT(mptable_ioapic, SI_BOOT2_PRESMP, SI_ORDER_ANY,
1386 mptable_ioapic_enum_register, 0);
1389 mptable_pci_int_dump(void)
1391 const struct mptable_pci_int *pci_int;
1396 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link) {
1397 kprintf("MPTABLE: %d:%d INT%c -> IOAPIC %d.%d\n",
1400 pci_int->mpci_pin + 'A',
1401 pci_int->mpci_ioapic_idx,
1402 pci_int->mpci_ioapic_pin);
1407 mptable_pci_int_route(int bus, int dev, int pin, int intline)
1409 const struct mptable_pci_int *pci_int;
1413 --pin; /* zero based */
1415 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link) {
1416 if (pci_int->mpci_bus == bus &&
1417 pci_int->mpci_dev == dev &&
1418 pci_int->mpci_pin == pin)
1421 if (pci_int != NULL) {
1424 gsi = ioapic_gsi(pci_int->mpci_ioapic_idx,
1425 pci_int->mpci_ioapic_pin);
1427 irq = ioapic_find_legacy_by_gsi(gsi,
1428 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
1434 kprintf("MPTABLE: fixed interrupt routing "
1435 "for %d:%d INT%c\n", bus, dev, pin + 'A');
1438 irq = ioapic_find_legacy_by_irq(intline,
1439 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
1442 if (irq >= 0 && bootverbose) {
1443 kprintf("MPTABLE: %d:%d INT%c routed to irq %d\n",
1444 bus, dev, pin + 'A', irq);