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 $
26 * $DragonFly: src/sys/platform/pc32/i386/mp_machdep.c,v 1.60 2008/06/07 12:03:52 mneumann Exp $
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/sysctl.h>
35 #include <sys/malloc.h>
36 #include <sys/memrange.h>
37 #include <sys/cons.h> /* cngetc() */
38 #include <sys/machintr.h>
41 #include <vm/vm_param.h>
43 #include <vm/vm_kern.h>
44 #include <vm/vm_extern.h>
46 #include <vm/vm_map.h>
52 #include <sys/mplock2.h>
54 #include <machine/smp.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>
69 #include <machine/md_var.h> /* setidt() */
70 #include <machine_base/icu/icu.h> /* IPIs */
71 #include <machine/intr_machdep.h> /* IPIs */
73 extern u_long ebda_addr;
74 extern u_int base_memory;
76 #define BIOS_BASE (0xf0000)
77 #define BIOS_BASE2 (0xe0000)
78 #define BIOS_SIZE (0x10000)
79 #define BIOS_COUNT (BIOS_SIZE/4)
81 #define PROCENTRY_FLAG_EN 0x01
82 #define PROCENTRY_FLAG_BP 0x02
83 #define IOAPICENTRY_FLAG_EN 0x01
85 /* MP Floating Pointer Structure */
86 typedef struct MPFPS {
99 /* MP Configuration Table Header */
100 typedef struct MPCTH {
102 u_short base_table_length;
106 u_char product_id[12];
107 void *oem_table_pointer;
108 u_short oem_table_size;
111 u_short extended_table_length;
112 u_char extended_table_checksum;
117 typedef struct PROCENTRY {
122 u_long cpu_signature;
123 u_long feature_flags;
128 typedef struct BUSENTRY {
134 typedef struct IOAPICENTRY {
140 } *io_apic_entry_ptr;
142 typedef struct INTENTRY {
152 /* descriptions of MP basetable entries */
153 typedef struct BASETABLE_ENTRY {
162 vm_size_t mp_cth_mapsz;
165 #define MPTABLE_POS_USE_DEFAULT(mpt) \
166 ((mpt)->mp_fps->mpfb1 != 0 || (mpt)->mp_cth == NULL)
170 int mb_type; /* MPTABLE_BUS_ */
171 TAILQ_ENTRY(mptable_bus) mb_link;
174 #define MPTABLE_BUS_ISA 0
175 #define MPTABLE_BUS_PCI 1
177 struct mptable_bus_info {
178 TAILQ_HEAD(, mptable_bus) mbi_list;
181 struct mptable_pci_int {
188 TAILQ_ENTRY(mptable_pci_int) mpci_link;
191 struct mptable_ioapic {
197 TAILQ_ENTRY(mptable_ioapic) mio_link;
200 typedef int (*mptable_iter_func)(void *, const void *, int);
202 static int mptable_iterate_entries(const mpcth_t,
203 mptable_iter_func, void *);
204 static int mptable_search(void);
205 static int mptable_search_sig(u_int32_t target, int count);
206 static int mptable_hyperthread_fixup(cpumask_t, int);
207 static int mptable_map(struct mptable_pos *);
208 static void mptable_unmap(struct mptable_pos *);
209 static void mptable_bus_info_alloc(const mpcth_t,
210 struct mptable_bus_info *);
211 static void mptable_bus_info_free(struct mptable_bus_info *);
213 static int mptable_lapic_probe(struct lapic_enumerator *);
214 static void mptable_lapic_enumerate(struct lapic_enumerator *);
215 static void mptable_lapic_default(void);
217 static int mptable_ioapic_probe(struct ioapic_enumerator *);
218 static void mptable_ioapic_enumerate(struct ioapic_enumerator *);
220 static basetable_entry basetable_entry_types[] =
222 {0, 20, "Processor"},
229 static vm_paddr_t mptable_fps_phyaddr;
230 static int mptable_use_default;
231 static TAILQ_HEAD(mptable_pci_int_list, mptable_pci_int) mptable_pci_int_list =
232 TAILQ_HEAD_INITIALIZER(mptable_pci_int_list);
233 static TAILQ_HEAD(mptable_ioapic_list, mptable_ioapic) mptable_ioapic_list =
234 TAILQ_HEAD_INITIALIZER(mptable_ioapic_list);
239 struct mptable_pos mpt;
242 KKASSERT(mptable_fps_phyaddr == 0);
244 mptable_fps_phyaddr = mptable_search();
245 if (mptable_fps_phyaddr == 0)
248 error = mptable_map(&mpt);
250 mptable_fps_phyaddr = 0;
254 if (MPTABLE_POS_USE_DEFAULT(&mpt)) {
255 kprintf("MPTABLE: use default configuration\n");
256 mptable_use_default = 1;
258 if (mpt.mp_fps->mpfb2 & 0x80)
263 SYSINIT(mptable_probe, SI_BOOT2_PRESMP, SI_ORDER_FIRST, mptable_probe, 0);
266 * Look for an Intel MP spec table (ie, SMP capable hardware).
274 /* see if EBDA exists */
275 if (ebda_addr != 0) {
276 /* search first 1K of EBDA */
277 target = (u_int32_t)ebda_addr;
278 if ((x = mptable_search_sig(target, 1024 / 4)) > 0)
281 /* last 1K of base memory, effective 'top of base' passed in */
282 target = (u_int32_t)(base_memory - 0x400);
283 if ((x = mptable_search_sig(target, 1024 / 4)) > 0)
287 /* search the BIOS */
288 target = (u_int32_t)BIOS_BASE;
289 if ((x = mptable_search_sig(target, BIOS_COUNT)) > 0)
292 /* search the extended BIOS */
293 target = (u_int32_t)BIOS_BASE2;
294 if ((x = mptable_search_sig(target, BIOS_COUNT)) > 0)
302 mptable_iterate_entries(const mpcth_t cth, mptable_iter_func func, void *arg)
304 int count, total_size;
305 const void *position;
307 KKASSERT(cth->base_table_length >= sizeof(struct MPCTH));
308 total_size = cth->base_table_length - sizeof(struct MPCTH);
309 position = (const uint8_t *)cth + sizeof(struct MPCTH);
310 count = cth->entry_count;
315 KKASSERT(total_size >= 0);
316 if (total_size == 0) {
317 kprintf("invalid base MP table, "
318 "entry count and length mismatch\n");
322 type = *(const uint8_t *)position;
324 case 0: /* processor_entry */
325 case 1: /* bus_entry */
326 case 2: /* io_apic_entry */
327 case 3: /* int_entry */
328 case 4: /* int_entry */
331 kprintf("unknown base MP table entry type %d\n", type);
335 if (total_size < basetable_entry_types[type].length) {
336 kprintf("invalid base MP table length, "
337 "does not contain all entries\n");
340 total_size -= basetable_entry_types[type].length;
342 error = func(arg, position, type);
346 position = (const uint8_t *)position +
347 basetable_entry_types[type].length;
353 * look for the MP spec signature
356 /* string defined by the Intel MP Spec as identifying the MP table */
357 #define MP_SIG 0x5f504d5f /* _MP_ */
358 #define NEXT(X) ((X) += 4)
360 mptable_search_sig(u_int32_t target, int count)
366 KKASSERT(target != 0);
368 map_size = count * sizeof(u_int32_t);
369 addr = pmap_mapdev((vm_paddr_t)target, map_size);
372 for (x = 0; x < count; NEXT(x)) {
373 if (addr[x] == MP_SIG) {
374 /* make array index a byte index */
375 ret = target + (x * sizeof(u_int32_t));
380 pmap_unmapdev((vm_offset_t)addr, map_size);
384 static int processor_entry (const struct PROCENTRY *entry, int cpu);
387 * Check if we should perform a hyperthreading "fix-up" to
388 * enumerate any logical CPU's that aren't already listed
391 * XXX: We assume that all of the physical CPUs in the
392 * system have the same number of logical CPUs.
394 * XXX: We assume that APIC ID's are allocated such that
395 * the APIC ID's for a physical processor are aligned
396 * with the number of logical CPU's in the processor.
399 mptable_hyperthread_fixup(cpumask_t id_mask, int cpu_count)
401 int i, id, lcpus_max, logical_cpus;
403 if ((cpu_feature & CPUID_HTT) == 0)
406 lcpus_max = (cpu_procinfo & CPUID_HTT_CORES) >> 16;
410 if (cpu_vendor_id == CPU_VENDOR_INTEL) {
412 * INSTRUCTION SET REFERENCE, A-M (#253666)
413 * Page 3-181, Table 3-20
414 * "The nearest power-of-2 integer that is not smaller
415 * than EBX[23:16] is the number of unique initial APIC
416 * IDs reserved for addressing different logical
417 * processors in a physical package."
420 if ((1 << i) >= lcpus_max) {
427 KKASSERT(cpu_count != 0);
428 if (cpu_count == lcpus_max) {
429 /* We have nothing to fix */
431 } else if (cpu_count == 1) {
432 /* XXX this may be incorrect */
433 logical_cpus = lcpus_max;
438 * Calculate the distances between two nearest
439 * APIC IDs. If all such distances are same,
440 * then it is the number of missing cpus that
441 * we are going to fill later.
443 dist = cur = prev = -1;
444 for (id = 0; id < MAXCPU; ++id) {
445 if ((id_mask & CPUMASK(id)) == 0)
450 int new_dist = cur - prev;
456 * Make sure that all distances
457 * between two nearest APIC IDs
460 if (dist != new_dist)
468 /* Must be power of 2 */
469 if (dist & (dist - 1))
472 /* Can't exceed CPU package capacity */
473 if (dist > lcpus_max)
474 logical_cpus = lcpus_max;
480 * For each APIC ID of a CPU that is set in the mask,
481 * scan the other candidate APIC ID's for this
482 * physical processor. If any of those ID's are
483 * already in the table, then kill the fixup.
485 for (id = 0; id < MAXCPU; id++) {
486 if ((id_mask & CPUMASK(id)) == 0)
488 /* First, make sure we are on a logical_cpus boundary. */
489 if (id % logical_cpus != 0)
491 for (i = id + 1; i < id + logical_cpus; i++)
492 if ((id_mask & CPUMASK(i)) != 0)
499 mptable_map(struct mptable_pos *mpt)
503 vm_size_t cth_mapsz = 0;
505 KKASSERT(mptable_fps_phyaddr != 0);
507 bzero(mpt, sizeof(*mpt));
509 fps = pmap_mapdev(mptable_fps_phyaddr, sizeof(*fps));
512 * Map configuration table header to get
513 * the base table size
515 cth = pmap_mapdev(fps->pap, sizeof(*cth));
516 cth_mapsz = cth->base_table_length;
517 pmap_unmapdev((vm_offset_t)cth, sizeof(*cth));
519 if (cth_mapsz < sizeof(*cth)) {
520 kprintf("invalid base MP table length %d\n",
522 pmap_unmapdev((vm_offset_t)fps, sizeof(*fps));
529 cth = pmap_mapdev(fps->pap, cth_mapsz);
534 mpt->mp_cth_mapsz = cth_mapsz;
540 mptable_unmap(struct mptable_pos *mpt)
542 if (mpt->mp_cth != NULL) {
543 pmap_unmapdev((vm_offset_t)mpt->mp_cth, mpt->mp_cth_mapsz);
545 mpt->mp_cth_mapsz = 0;
547 if (mpt->mp_fps != NULL) {
548 pmap_unmapdev((vm_offset_t)mpt->mp_fps, sizeof(*mpt->mp_fps));
554 processor_entry(const struct PROCENTRY *entry, int cpu)
558 /* check for usability */
559 if (!(entry->cpu_flags & PROCENTRY_FLAG_EN))
562 /* check for BSP flag */
563 if (entry->cpu_flags & PROCENTRY_FLAG_BP) {
564 lapic_set_cpuid(0, entry->apic_id);
565 return 0; /* its already been counted */
568 /* add another AP to list, if less than max number of CPUs */
569 else if (cpu < MAXCPU) {
570 lapic_set_cpuid(cpu, entry->apic_id);
578 mptable_bus_info_callback(void *xarg, const void *pos, int type)
580 struct mptable_bus_info *bus_info = xarg;
581 const struct BUSENTRY *ent;
582 struct mptable_bus *bus;
588 TAILQ_FOREACH(bus, &bus_info->mbi_list, mb_link) {
589 if (bus->mb_id == ent->bus_id) {
590 kprintf("mptable_bus_info_alloc: duplicated bus id "
591 "(%d)\n", bus->mb_id);
597 if (strncmp(ent->bus_type, "PCI", 3) == 0) {
598 bus = kmalloc(sizeof(*bus), M_TEMP, M_WAITOK | M_ZERO);
599 bus->mb_type = MPTABLE_BUS_PCI;
600 } else if (strncmp(ent->bus_type, "ISA", 3) == 0) {
601 bus = kmalloc(sizeof(*bus), M_TEMP, M_WAITOK | M_ZERO);
602 bus->mb_type = MPTABLE_BUS_ISA;
606 bus->mb_id = ent->bus_id;
607 TAILQ_INSERT_TAIL(&bus_info->mbi_list, bus, mb_link);
613 mptable_bus_info_alloc(const mpcth_t cth, struct mptable_bus_info *bus_info)
617 bzero(bus_info, sizeof(*bus_info));
618 TAILQ_INIT(&bus_info->mbi_list);
620 error = mptable_iterate_entries(cth, mptable_bus_info_callback, bus_info);
622 mptable_bus_info_free(bus_info);
626 mptable_bus_info_free(struct mptable_bus_info *bus_info)
628 struct mptable_bus *bus;
630 while ((bus = TAILQ_FIRST(&bus_info->mbi_list)) != NULL) {
631 TAILQ_REMOVE(&bus_info->mbi_list, bus, mb_link);
636 struct mptable_lapic_cbarg1 {
639 u_int ht_apicid_mask;
643 mptable_lapic_pass1_callback(void *xarg, const void *pos, int type)
645 const struct PROCENTRY *ent;
646 struct mptable_lapic_cbarg1 *arg = xarg;
652 if ((ent->cpu_flags & PROCENTRY_FLAG_EN) == 0)
656 if (ent->apic_id < 32) {
657 arg->ht_apicid_mask |= 1 << ent->apic_id;
658 } else if (arg->ht_fixup) {
659 kprintf("MPTABLE: lapic id > 32, disable HTT fixup\n");
665 struct mptable_lapic_cbarg2 {
672 mptable_lapic_pass2_callback(void *xarg, const void *pos, int type)
674 const struct PROCENTRY *ent;
675 struct mptable_lapic_cbarg2 *arg = xarg;
681 if (ent->cpu_flags & PROCENTRY_FLAG_BP) {
682 KKASSERT(!arg->found_bsp);
686 if (processor_entry(ent, arg->cpu))
689 if (arg->logical_cpus) {
690 struct PROCENTRY proc;
694 * Create fake mptable processor entries
695 * and feed them to processor_entry() to
696 * enumerate the logical CPUs.
698 bzero(&proc, sizeof(proc));
700 proc.cpu_flags = PROCENTRY_FLAG_EN;
701 proc.apic_id = ent->apic_id;
703 for (i = 1; i < arg->logical_cpus; i++) {
705 processor_entry(&proc, arg->cpu);
713 mptable_lapic_default(void)
715 int ap_apicid, bsp_apicid;
717 mp_naps = 1; /* exclude BSP */
719 /* Map local apic before the id field is accessed */
720 lapic_map(DEFAULT_APIC_BASE);
722 bsp_apicid = APIC_ID(lapic->id);
723 ap_apicid = (bsp_apicid == 0) ? 1 : 0;
726 lapic_set_cpuid(0, bsp_apicid);
727 /* one and only AP */
728 lapic_set_cpuid(1, ap_apicid);
734 * APIC ID <-> CPU ID mappings
737 mptable_lapic_enumerate(struct lapic_enumerator *e)
739 struct mptable_pos mpt;
740 struct mptable_lapic_cbarg1 arg1;
741 struct mptable_lapic_cbarg2 arg2;
743 int error, logical_cpus = 0;
744 vm_offset_t lapic_addr;
746 if (mptable_use_default) {
747 mptable_lapic_default();
751 error = mptable_map(&mpt);
753 panic("mptable_lapic_enumerate mptable_map failed\n");
754 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
758 /* Save local apic address */
759 lapic_addr = (vm_offset_t)cth->apic_address;
760 KKASSERT(lapic_addr != 0);
763 * Find out how many CPUs do we have
765 bzero(&arg1, sizeof(arg1));
766 arg1.ht_fixup = 1; /* Apply ht fixup by default */
768 error = mptable_iterate_entries(cth,
769 mptable_lapic_pass1_callback, &arg1);
771 panic("mptable_iterate_entries(lapic_pass1) failed\n");
772 KKASSERT(arg1.cpu_count != 0);
774 /* See if we need to fixup HT logical CPUs. */
776 logical_cpus = mptable_hyperthread_fixup(arg1.ht_apicid_mask,
778 if (logical_cpus != 0)
779 arg1.cpu_count *= logical_cpus;
781 mp_naps = arg1.cpu_count - 1; /* subtract the BSP */
784 * Link logical CPU id to local apic id
786 bzero(&arg2, sizeof(arg2));
788 arg2.logical_cpus = logical_cpus;
790 error = mptable_iterate_entries(cth,
791 mptable_lapic_pass2_callback, &arg2);
793 panic("mptable_iterate_entries(lapic_pass2) failed\n");
794 KKASSERT(arg2.found_bsp);
797 lapic_map(lapic_addr);
802 struct mptable_lapic_probe_cbarg {
808 mptable_lapic_probe_callback(void *xarg, const void *pos, int type)
810 const struct PROCENTRY *ent;
811 struct mptable_lapic_probe_cbarg *arg = xarg;
817 if ((ent->cpu_flags & PROCENTRY_FLAG_EN) == 0)
821 if (ent->cpu_flags & PROCENTRY_FLAG_BP) {
822 if (arg->found_bsp) {
823 kprintf("more than one BSP in base MP table\n");
832 mptable_lapic_probe(struct lapic_enumerator *e)
834 struct mptable_pos mpt;
835 struct mptable_lapic_probe_cbarg arg;
839 if (mptable_fps_phyaddr == 0)
842 if (mptable_use_default)
845 error = mptable_map(&mpt);
848 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
853 if (cth->apic_address == 0)
856 bzero(&arg, sizeof(arg));
857 error = mptable_iterate_entries(cth,
858 mptable_lapic_probe_callback, &arg);
860 if (arg.cpu_count == 0) {
861 kprintf("MP table contains no processor entries\n");
863 } else if (!arg.found_bsp) {
864 kprintf("MP table does not contains BSP entry\n");
873 static struct lapic_enumerator mptable_lapic_enumerator = {
874 .lapic_prio = LAPIC_ENUM_PRIO_MPTABLE,
875 .lapic_probe = mptable_lapic_probe,
876 .lapic_enumerate = mptable_lapic_enumerate
880 mptable_lapic_enum_register(void)
882 lapic_enumerator_register(&mptable_lapic_enumerator);
884 SYSINIT(mptable_lapic, SI_BOOT2_PRESMP, SI_ORDER_ANY,
885 mptable_lapic_enum_register, 0);
888 mptable_ioapic_list_callback(void *xarg, const void *pos, int type)
890 const struct IOAPICENTRY *ent;
891 struct mptable_ioapic *nioapic, *ioapic;
897 if ((ent->apic_flags & IOAPICENTRY_FLAG_EN) == 0)
900 if (ent->apic_address == 0) {
901 kprintf("mptable_ioapic_create_list: zero IOAPIC addr\n");
905 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
906 if (ioapic->mio_apic_id == ent->apic_id) {
907 kprintf("mptable_ioapic_create_list: duplicated "
908 "apic id %d\n", ioapic->mio_apic_id);
911 if (ioapic->mio_addr == (uint32_t)ent->apic_address) {
912 kprintf("mptable_ioapic_create_list: overlapped "
913 "IOAPIC addr 0x%08x", ioapic->mio_addr);
918 nioapic = kmalloc(sizeof(*nioapic), M_DEVBUF, M_WAITOK | M_ZERO);
919 nioapic->mio_apic_id = ent->apic_id;
920 nioapic->mio_addr = (uint32_t)ent->apic_address;
923 * Create IOAPIC list in ascending order of APIC ID
925 TAILQ_FOREACH_REVERSE(ioapic, &mptable_ioapic_list,
926 mptable_ioapic_list, mio_link) {
927 if (nioapic->mio_apic_id > ioapic->mio_apic_id) {
928 TAILQ_INSERT_AFTER(&mptable_ioapic_list,
929 ioapic, nioapic, mio_link);
934 TAILQ_INSERT_HEAD(&mptable_ioapic_list, nioapic, mio_link);
940 mptable_ioapic_create_list(void)
942 struct mptable_ioapic *ioapic;
943 struct mptable_pos mpt;
946 if (mptable_fps_phyaddr == 0)
949 if (mptable_use_default) {
950 ioapic = kmalloc(sizeof(*ioapic), M_DEVBUF, M_WAITOK | M_ZERO);
952 ioapic->mio_apic_id = 0; /* NOTE: any value is ok here */
953 ioapic->mio_addr = 0xfec00000; /* XXX magic number */
955 TAILQ_INSERT_HEAD(&mptable_ioapic_list, ioapic, mio_link);
959 error = mptable_map(&mpt);
961 panic("mptable_ioapic_create_list: mptable_map failed\n");
962 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
964 error = mptable_iterate_entries(mpt.mp_cth,
965 mptable_ioapic_list_callback, NULL);
967 while ((ioapic = TAILQ_FIRST(&mptable_ioapic_list)) != NULL) {
968 TAILQ_REMOVE(&mptable_ioapic_list, ioapic, mio_link);
969 kfree(ioapic, M_DEVBUF);
975 * Assign index number for each IOAPIC
978 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
979 ioapic->mio_idx = idx;
985 SYSINIT(mptable_ioapic_list, SI_BOOT2_PRESMP, SI_ORDER_SECOND,
986 mptable_ioapic_create_list, 0);
989 mptable_pci_int_callback(void *xarg, const void *pos, int type)
991 const struct mptable_bus_info *bus_info = xarg;
992 const struct mptable_ioapic *ioapic;
993 const struct mptable_bus *bus;
994 struct mptable_pci_int *pci_int;
995 const struct INTENTRY *ent;
996 int pci_pin, pci_dev;
1002 if (ent->int_type != 0)
1005 TAILQ_FOREACH(bus, &bus_info->mbi_list, mb_link) {
1006 if (bus->mb_type == MPTABLE_BUS_PCI &&
1007 bus->mb_id == ent->src_bus_id)
1013 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1014 if (ioapic->mio_apic_id == ent->dst_apic_id)
1017 if (ioapic == NULL) {
1018 kprintf("MPTABLE: warning PCI int dst apic id %d "
1019 "does not exist\n", ent->dst_apic_id);
1023 pci_pin = ent->src_bus_irq & 0x3;
1024 pci_dev = (ent->src_bus_irq >> 2) & 0x1f;
1026 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link) {
1027 if (pci_int->mpci_bus == ent->src_bus_id &&
1028 pci_int->mpci_dev == pci_dev &&
1029 pci_int->mpci_pin == pci_pin) {
1030 if (pci_int->mpci_ioapic_idx == ioapic->mio_idx &&
1031 pci_int->mpci_ioapic_pin == ent->dst_apic_int) {
1032 kprintf("MPTABLE: warning duplicated "
1033 "PCI int entry for "
1034 "bus %d, dev %d, pin %d\n",
1040 kprintf("mptable_pci_int_register: "
1041 "conflict PCI int entry for "
1042 "bus %d, dev %d, pin %d, "
1043 "IOAPIC %d.%d -> %d.%d\n",
1047 pci_int->mpci_ioapic_idx,
1048 pci_int->mpci_ioapic_pin,
1056 pci_int = kmalloc(sizeof(*pci_int), M_DEVBUF, M_WAITOK | M_ZERO);
1058 pci_int->mpci_bus = ent->src_bus_id;
1059 pci_int->mpci_dev = pci_dev;
1060 pci_int->mpci_pin = pci_pin;
1061 pci_int->mpci_ioapic_idx = ioapic->mio_idx;
1062 pci_int->mpci_ioapic_pin = ent->dst_apic_int;
1064 TAILQ_INSERT_TAIL(&mptable_pci_int_list, pci_int, mpci_link);
1070 mptable_pci_int_register(void)
1072 struct mptable_bus_info bus_info;
1073 const struct mptable_bus *bus;
1074 struct mptable_pci_int *pci_int;
1075 struct mptable_pos mpt;
1076 int error, force_pci0, npcibus;
1079 if (mptable_fps_phyaddr == 0)
1082 if (mptable_use_default)
1085 if (TAILQ_EMPTY(&mptable_ioapic_list))
1088 error = mptable_map(&mpt);
1090 panic("mptable_pci_int_register: mptable_map failed\n");
1091 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
1095 mptable_bus_info_alloc(cth, &bus_info);
1096 if (TAILQ_EMPTY(&bus_info.mbi_list))
1101 TAILQ_FOREACH(bus, &bus_info.mbi_list, mb_link) {
1102 if (bus->mb_type == MPTABLE_BUS_PCI)
1106 mptable_bus_info_free(&bus_info);
1108 } else if (npcibus == 1) {
1112 error = mptable_iterate_entries(cth,
1113 mptable_pci_int_callback, &bus_info);
1115 mptable_bus_info_free(&bus_info);
1118 while ((pci_int = TAILQ_FIRST(&mptable_pci_int_list)) != NULL) {
1119 TAILQ_REMOVE(&mptable_pci_int_list, pci_int, mpci_link);
1120 kfree(pci_int, M_DEVBUF);
1126 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link)
1127 pci_int->mpci_bus = 0;
1130 mptable_unmap(&mpt);
1132 SYSINIT(mptable_pci, SI_BOOT2_PRESMP, SI_ORDER_ANY,
1133 mptable_pci_int_register, 0);
1135 struct mptable_ioapic_probe_cbarg {
1136 const struct mptable_bus_info *bus_info;
1140 mptable_ioapic_probe_callback(void *xarg, const void *pos, int type)
1142 struct mptable_ioapic_probe_cbarg *arg = xarg;
1143 const struct mptable_ioapic *ioapic;
1144 const struct mptable_bus *bus;
1145 const struct INTENTRY *ent;
1151 if (ent->int_type != 0)
1154 TAILQ_FOREACH(bus, &arg->bus_info->mbi_list, mb_link) {
1155 if (bus->mb_type == MPTABLE_BUS_ISA &&
1156 bus->mb_id == ent->src_bus_id)
1162 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1163 if (ioapic->mio_apic_id == ent->dst_apic_id)
1166 if (ioapic == NULL) {
1167 kprintf("MPTABLE: warning ISA int dst apic id %d "
1168 "does not exist\n", ent->dst_apic_id);
1172 /* XXX magic number */
1173 if (ent->src_bus_irq >= 16) {
1174 kprintf("mptable_ioapic_probe: invalid ISA irq (%d)\n",
1182 mptable_ioapic_probe(struct ioapic_enumerator *e)
1184 struct mptable_ioapic_probe_cbarg arg;
1185 struct mptable_bus_info bus_info;
1186 struct mptable_pos mpt;
1190 if (mptable_fps_phyaddr == 0)
1193 if (mptable_use_default)
1196 if (TAILQ_EMPTY(&mptable_ioapic_list))
1199 error = mptable_map(&mpt);
1201 panic("mptable_ioapic_probe: mptable_map failed\n");
1202 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
1206 mptable_bus_info_alloc(cth, &bus_info);
1208 bzero(&arg, sizeof(arg));
1209 arg.bus_info = &bus_info;
1211 error = mptable_iterate_entries(cth,
1212 mptable_ioapic_probe_callback, &arg);
1214 mptable_bus_info_free(&bus_info);
1215 mptable_unmap(&mpt);
1220 struct mptable_ioapic_int_cbarg {
1221 const struct mptable_bus_info *bus_info;
1226 mptable_ioapic_int_callback(void *xarg, const void *pos, int type)
1228 struct mptable_ioapic_int_cbarg *arg = xarg;
1229 const struct mptable_ioapic *ioapic;
1230 const struct mptable_bus *bus;
1231 const struct INTENTRY *ent;
1240 if (ent->int_type != 0)
1243 TAILQ_FOREACH(bus, &arg->bus_info->mbi_list, mb_link) {
1244 if (bus->mb_type == MPTABLE_BUS_ISA &&
1245 bus->mb_id == ent->src_bus_id)
1251 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1252 if (ioapic->mio_apic_id == ent->dst_apic_id)
1255 if (ioapic == NULL) {
1256 kprintf("MPTABLE: warning ISA int dst apic id %d "
1257 "does not exist\n", ent->dst_apic_id);
1261 if (ent->dst_apic_int >= ioapic->mio_npin) {
1262 panic("mptable_ioapic_enumerate: invalid I/O APIC "
1263 "pin %d, should be < %d",
1264 ent->dst_apic_int, ioapic->mio_npin);
1266 gsi = ioapic->mio_gsi_base + ent->dst_apic_int;
1268 if (ent->src_bus_irq != gsi) {
1270 kprintf("MPTABLE: INTSRC irq %d -> GSI %d\n",
1271 ent->src_bus_irq, gsi);
1273 ioapic_intsrc(ent->src_bus_irq, gsi,
1274 INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
1280 mptable_ioapic_enumerate(struct ioapic_enumerator *e)
1282 struct mptable_bus_info bus_info;
1283 struct mptable_ioapic *ioapic;
1284 struct mptable_pos mpt;
1288 KKASSERT(mptable_fps_phyaddr != 0);
1289 KKASSERT(!TAILQ_EMPTY(&mptable_ioapic_list));
1291 TAILQ_FOREACH(ioapic, &mptable_ioapic_list, mio_link) {
1292 const struct mptable_ioapic *prev_ioapic;
1296 addr = ioapic_map(ioapic->mio_addr);
1298 ver = ioapic_read(addr, IOAPIC_VER);
1299 ioapic->mio_npin = ((ver & IOART_VER_MAXREDIR)
1300 >> MAXREDIRSHIFT) + 1;
1302 prev_ioapic = TAILQ_PREV(ioapic,
1303 mptable_ioapic_list, mio_link);
1304 if (prev_ioapic == NULL) {
1305 ioapic->mio_gsi_base = 0;
1307 ioapic->mio_gsi_base =
1308 prev_ioapic->mio_gsi_base +
1309 prev_ioapic->mio_npin;
1311 ioapic_add(addr, ioapic->mio_gsi_base,
1315 kprintf("MPTABLE: IOAPIC addr 0x%08x, "
1316 "apic id %d, idx %d, gsi base %d, npin %d\n",
1318 ioapic->mio_apic_id,
1320 ioapic->mio_gsi_base,
1325 if (mptable_use_default) {
1327 kprintf("MPTABLE: INTSRC irq 0 -> GSI 2 (default)\n");
1328 ioapic_intsrc(0, 2, INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
1332 error = mptable_map(&mpt);
1334 panic("mptable_ioapic_probe: mptable_map failed\n");
1335 KKASSERT(!MPTABLE_POS_USE_DEFAULT(&mpt));
1339 mptable_bus_info_alloc(cth, &bus_info);
1341 if (TAILQ_EMPTY(&bus_info.mbi_list)) {
1343 kprintf("MPTABLE: INTSRC irq 0 -> GSI 2 (no bus)\n");
1344 ioapic_intsrc(0, 2, INTR_TRIGGER_EDGE, INTR_POLARITY_HIGH);
1346 struct mptable_ioapic_int_cbarg arg;
1348 bzero(&arg, sizeof(arg));
1349 arg.bus_info = &bus_info;
1351 error = mptable_iterate_entries(cth,
1352 mptable_ioapic_int_callback, &arg);
1354 panic("mptable_ioapic_int failed\n");
1356 if (arg.ioapic_nint == 0) {
1358 kprintf("MPTABLE: INTSRC irq 0 -> GSI 2 "
1361 ioapic_intsrc(0, 2, INTR_TRIGGER_EDGE,
1362 INTR_POLARITY_HIGH);
1366 mptable_bus_info_free(&bus_info);
1368 mptable_unmap(&mpt);
1371 static struct ioapic_enumerator mptable_ioapic_enumerator = {
1372 .ioapic_prio = IOAPIC_ENUM_PRIO_MPTABLE,
1373 .ioapic_probe = mptable_ioapic_probe,
1374 .ioapic_enumerate = mptable_ioapic_enumerate
1378 mptable_ioapic_enum_register(void)
1380 ioapic_enumerator_register(&mptable_ioapic_enumerator);
1382 SYSINIT(mptable_ioapic, SI_BOOT2_PRESMP, SI_ORDER_ANY,
1383 mptable_ioapic_enum_register, 0);
1386 mptable_pci_int_dump(void)
1388 const struct mptable_pci_int *pci_int;
1390 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link) {
1391 kprintf("MPTABLE: %d:%d INT%c -> IOAPIC %d.%d\n",
1394 pci_int->mpci_pin + 'A',
1395 pci_int->mpci_ioapic_idx,
1396 pci_int->mpci_ioapic_pin);
1401 mptable_pci_int_route(int bus, int dev, int pin, int intline)
1403 const struct mptable_pci_int *pci_int;
1407 --pin; /* zero based */
1409 TAILQ_FOREACH(pci_int, &mptable_pci_int_list, mpci_link) {
1410 if (pci_int->mpci_bus == bus &&
1411 pci_int->mpci_dev == dev &&
1412 pci_int->mpci_pin == pin)
1415 if (pci_int != NULL) {
1418 gsi = ioapic_gsi(pci_int->mpci_ioapic_idx,
1419 pci_int->mpci_ioapic_pin);
1421 irq = ioapic_abi_find_gsi(gsi,
1422 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
1428 kprintf("MPTABLE: fixed interrupt routing "
1429 "for %d:%d INT%c\n", bus, dev, pin + 'A');
1432 irq = ioapic_abi_find_irq(intline,
1433 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
1436 if (irq >= 0 && bootverbose) {
1437 kprintf("MPTABLE: %d:%d INT%c routed to irq %d\n",
1438 bus, dev, pin + 'A', irq);