/sys/x86/x86/mptable.c
C | 1226 lines | 954 code | 105 blank | 167 comment | 179 complexity | 302426293c0f92fc61ff348b41ee6ef2 MD5 | raw file
Possible License(s): MPL-2.0-no-copyleft-exception, BSD-3-Clause, LGPL-2.0, LGPL-2.1, BSD-2-Clause, 0BSD, JSON, AGPL-1.0, GPL-2.0
- /*-
- * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
- * Copyright (c) 1996, by Steve Passe
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. The name of the developer may NOT be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #include <sys/cdefs.h>
- __FBSDID("$FreeBSD$");
- #include "opt_mptable_force_htt.h"
- #include <sys/param.h>
- #include <sys/systm.h>
- #include <sys/bus.h>
- #include <sys/kernel.h>
- #include <sys/limits.h>
- #include <sys/malloc.h>
- #ifdef NEW_PCIB
- #include <sys/rman.h>
- #endif
- #include <vm/vm.h>
- #include <vm/vm_param.h>
- #include <vm/pmap.h>
- #include <dev/pci/pcivar.h>
- #ifdef NEW_PCIB
- #include <dev/pci/pcib_private.h>
- #endif
- #include <x86/apicreg.h>
- #include <x86/mptable.h>
- #include <machine/frame.h>
- #include <machine/intr_machdep.h>
- #include <machine/apicvar.h>
- #include <machine/md_var.h>
- #ifdef NEW_PCIB
- #include <machine/resource.h>
- #endif
- #include <machine/specialreg.h>
- /* string defined by the Intel MP Spec as identifying the MP table */
- #define MP_SIG 0x5f504d5f /* _MP_ */
- #ifdef __amd64__
- #define MAX_LAPIC_ID 63 /* Max local APIC ID for HTT fixup */
- #else
- #define MAX_LAPIC_ID 31 /* Max local APIC ID for HTT fixup */
- #endif
- #ifdef PC98
- #define BIOS_BASE (0xe8000)
- #define BIOS_SIZE (0x18000)
- #else
- #define BIOS_BASE (0xf0000)
- #define BIOS_SIZE (0x10000)
- #endif
- #define BIOS_COUNT (BIOS_SIZE/4)
- typedef void mptable_entry_handler(u_char *entry, void *arg);
- typedef void mptable_extended_entry_handler(ext_entry_ptr entry, void *arg);
- static basetable_entry basetable_entry_types[] =
- {
- {0, 20, "Processor"},
- {1, 8, "Bus"},
- {2, 8, "I/O APIC"},
- {3, 8, "I/O INT"},
- {4, 8, "Local INT"}
- };
- typedef struct BUSDATA {
- u_char bus_id;
- enum busTypes bus_type;
- } bus_datum;
- typedef struct INTDATA {
- u_char int_type;
- u_short int_flags;
- u_char src_bus_id;
- u_char src_bus_irq;
- u_char dst_apic_id;
- u_char dst_apic_int;
- u_char int_vector;
- } io_int, local_int;
- typedef struct BUSTYPENAME {
- u_char type;
- char name[7];
- } bus_type_name;
- /* From MP spec v1.4, table 4-8. */
- static bus_type_name bus_type_table[] =
- {
- {UNKNOWN_BUSTYPE, "CBUS "},
- {UNKNOWN_BUSTYPE, "CBUSII"},
- {EISA, "EISA "},
- {UNKNOWN_BUSTYPE, "FUTURE"},
- {UNKNOWN_BUSTYPE, "INTERN"},
- {ISA, "ISA "},
- {UNKNOWN_BUSTYPE, "MBI "},
- {UNKNOWN_BUSTYPE, "MBII "},
- {MCA, "MCA "},
- {UNKNOWN_BUSTYPE, "MPI "},
- {UNKNOWN_BUSTYPE, "MPSA "},
- {UNKNOWN_BUSTYPE, "NUBUS "},
- {PCI, "PCI "},
- {UNKNOWN_BUSTYPE, "PCMCIA"},
- {UNKNOWN_BUSTYPE, "TC "},
- {UNKNOWN_BUSTYPE, "VL "},
- {UNKNOWN_BUSTYPE, "VME "},
- {UNKNOWN_BUSTYPE, "XPRESS"}
- };
- /* From MP spec v1.4, table 5-1. */
- static int default_data[7][5] =
- {
- /* nbus, id0, type0, id1, type1 */
- {1, 0, ISA, 255, NOBUS},
- {1, 0, EISA, 255, NOBUS},
- {1, 0, EISA, 255, NOBUS},
- {1, 0, MCA, 255, NOBUS},
- {2, 0, ISA, 1, PCI},
- {2, 0, EISA, 1, PCI},
- {2, 0, MCA, 1, PCI}
- };
- struct pci_probe_table_args {
- u_char bus;
- u_char found;
- };
- struct pci_route_interrupt_args {
- u_char bus; /* Source bus. */
- u_char irq; /* Source slot:pin. */
- int vector; /* Return value. */
- };
- static mpfps_t mpfps;
- static mpcth_t mpct;
- static ext_entry_ptr mpet;
- static void *ioapics[MAX_APIC_ID + 1];
- static bus_datum *busses;
- static int mptable_nioapics, mptable_nbusses, mptable_maxbusid;
- static int pci0 = -1;
- static MALLOC_DEFINE(M_MPTABLE, "mptable", "MP Table Items");
- static enum intr_polarity conforming_polarity(u_char src_bus,
- u_char src_bus_irq);
- static enum intr_trigger conforming_trigger(u_char src_bus, u_char src_bus_irq);
- static enum intr_polarity intentry_polarity(int_entry_ptr intr);
- static enum intr_trigger intentry_trigger(int_entry_ptr intr);
- static int lookup_bus_type(char *name);
- static void mptable_count_items(void);
- static void mptable_count_items_handler(u_char *entry, void *arg);
- #ifdef MPTABLE_FORCE_HTT
- static void mptable_hyperthread_fixup(u_int id_mask);
- #endif
- static void mptable_parse_apics_and_busses(void);
- static void mptable_parse_apics_and_busses_handler(u_char *entry,
- void *arg);
- static void mptable_parse_default_config_ints(void);
- static void mptable_parse_ints(void);
- static void mptable_parse_ints_handler(u_char *entry, void *arg);
- static void mptable_parse_io_int(int_entry_ptr intr);
- static void mptable_parse_local_int(int_entry_ptr intr);
- static void mptable_pci_probe_table_handler(u_char *entry, void *arg);
- static void mptable_pci_route_interrupt_handler(u_char *entry, void *arg);
- static void mptable_pci_setup(void);
- static int mptable_probe(void);
- static int mptable_probe_cpus(void);
- static void mptable_probe_cpus_handler(u_char *entry, void *arg __unused);
- static void mptable_register(void *dummy);
- static int mptable_setup_local(void);
- static int mptable_setup_io(void);
- #ifdef NEW_PCIB
- static void mptable_walk_extended_table(
- mptable_extended_entry_handler *handler, void *arg);
- #endif
- static void mptable_walk_table(mptable_entry_handler *handler, void *arg);
- static int search_for_sig(u_int32_t target, int count);
- static struct apic_enumerator mptable_enumerator = {
- "MPTable",
- mptable_probe,
- mptable_probe_cpus,
- mptable_setup_local,
- mptable_setup_io
- };
- /*
- * look for the MP spec signature
- */
- static int
- search_for_sig(u_int32_t target, int count)
- {
- int x;
- u_int32_t *addr = (u_int32_t *) (KERNBASE + target);
- for (x = 0; x < count; x += 4)
- if (addr[x] == MP_SIG)
- /* make array index a byte index */
- return (target + (x * sizeof(u_int32_t)));
- return (-1);
- }
- static int
- lookup_bus_type(char *name)
- {
- int x;
- for (x = 0; x < MAX_BUSTYPE; ++x)
- if (strncmp(bus_type_table[x].name, name, 6) == 0)
- return (bus_type_table[x].type);
- return (UNKNOWN_BUSTYPE);
- }
- /*
- * Look for an Intel MP spec table (ie, SMP capable hardware).
- */
- static int
- mptable_probe(void)
- {
- int x;
- u_long segment;
- u_int32_t target;
- /* see if EBDA exists */
- if ((segment = (u_long) * (u_short *) (KERNBASE + 0x40e)) != 0) {
- /* search first 1K of EBDA */
- target = (u_int32_t) (segment << 4);
- if ((x = search_for_sig(target, 1024 / 4)) >= 0)
- goto found;
- } else {
- /* last 1K of base memory, effective 'top of base' passed in */
- target = (u_int32_t) ((basemem * 1024) - 0x400);
- if ((x = search_for_sig(target, 1024 / 4)) >= 0)
- goto found;
- }
- /* search the BIOS */
- target = (u_int32_t) BIOS_BASE;
- if ((x = search_for_sig(target, BIOS_COUNT)) >= 0)
- goto found;
- /* nothing found */
- return (ENXIO);
- found:
- mpfps = (mpfps_t)(KERNBASE + x);
- /* Map in the configuration table if it exists. */
- if (mpfps->config_type != 0) {
- if (bootverbose)
- printf(
- "MP Table version 1.%d found using Default Configuration %d\n",
- mpfps->spec_rev, mpfps->config_type);
- if (mpfps->config_type != 5 && mpfps->config_type != 6) {
- printf(
- "MP Table Default Configuration %d is unsupported\n",
- mpfps->config_type);
- return (ENXIO);
- }
- mpct = NULL;
- } else {
- if ((uintptr_t)mpfps->pap >= 1024 * 1024) {
- printf("%s: Unable to map MP Configuration Table\n",
- __func__);
- return (ENXIO);
- }
- mpct = (mpcth_t)(KERNBASE + (uintptr_t)mpfps->pap);
- if (mpct->base_table_length + (uintptr_t)mpfps->pap >=
- 1024 * 1024) {
- printf("%s: Unable to map end of MP Config Table\n",
- __func__);
- return (ENXIO);
- }
- if (mpct->extended_table_length != 0 &&
- mpct->extended_table_length + mpct->base_table_length +
- (uintptr_t)mpfps->pap < 1024 * 1024)
- mpet = (ext_entry_ptr)((char *)mpct +
- mpct->base_table_length);
- if (mpct->signature[0] != 'P' || mpct->signature[1] != 'C' ||
- mpct->signature[2] != 'M' || mpct->signature[3] != 'P') {
- printf("%s: MP Config Table has bad signature: %c%c%c%c\n",
- __func__, mpct->signature[0], mpct->signature[1],
- mpct->signature[2], mpct->signature[3]);
- return (ENXIO);
- }
- if (bootverbose)
- printf(
- "MP Configuration Table version 1.%d found at %p\n",
- mpct->spec_rev, mpct);
- }
- return (-100);
- }
- /*
- * Run through the MP table enumerating CPUs.
- */
- static int
- mptable_probe_cpus(void)
- {
- u_int cpu_mask;
- /* Is this a pre-defined config? */
- if (mpfps->config_type != 0) {
- lapic_create(0, 1);
- lapic_create(1, 0);
- } else {
- cpu_mask = 0;
- mptable_walk_table(mptable_probe_cpus_handler, &cpu_mask);
- #ifdef MPTABLE_FORCE_HTT
- mptable_hyperthread_fixup(cpu_mask);
- #endif
- }
- return (0);
- }
- /*
- * Initialize the local APIC on the BSP.
- */
- static int
- mptable_setup_local(void)
- {
- vm_paddr_t addr;
- /* Is this a pre-defined config? */
- printf("MPTable: <");
- if (mpfps->config_type != 0) {
- addr = DEFAULT_APIC_BASE;
- printf("Default Configuration %d", mpfps->config_type);
- } else {
- addr = mpct->apic_address;
- printf("%.*s %.*s", (int)sizeof(mpct->oem_id), mpct->oem_id,
- (int)sizeof(mpct->product_id), mpct->product_id);
- }
- printf(">\n");
- lapic_init(addr);
- return (0);
- }
- /*
- * Run through the MP table enumerating I/O APICs.
- */
- static int
- mptable_setup_io(void)
- {
- int i;
- u_char byte;
- /* First, we count individual items and allocate arrays. */
- mptable_count_items();
- busses = malloc((mptable_maxbusid + 1) * sizeof(bus_datum), M_MPTABLE,
- M_WAITOK);
- for (i = 0; i <= mptable_maxbusid; i++)
- busses[i].bus_type = NOBUS;
- /* Second, we run through adding I/O APIC's and busses. */
- mptable_parse_apics_and_busses();
- /* Third, we run through the table tweaking interrupt sources. */
- mptable_parse_ints();
- /* Fourth, we register all the I/O APIC's. */
- for (i = 0; i <= MAX_APIC_ID; i++)
- if (ioapics[i] != NULL)
- ioapic_register(ioapics[i]);
- /* Fifth, we setup data structures to handle PCI interrupt routing. */
- mptable_pci_setup();
- /* Finally, we throw the switch to enable the I/O APIC's. */
- if (mpfps->mpfb2 & MPFB2_IMCR_PRESENT) {
- outb(0x22, 0x70); /* select IMCR */
- byte = inb(0x23); /* current contents */
- byte |= 0x01; /* mask external INTR */
- outb(0x23, byte); /* disconnect 8259s/NMI */
- }
- return (0);
- }
- static void
- mptable_register(void *dummy __unused)
- {
- apic_register_enumerator(&mptable_enumerator);
- }
- SYSINIT(mptable_register, SI_SUB_TUNABLES - 1, SI_ORDER_FIRST, mptable_register,
- NULL);
- /*
- * Call the handler routine for each entry in the MP config base table.
- */
- static void
- mptable_walk_table(mptable_entry_handler *handler, void *arg)
- {
- u_int i;
- u_char *entry;
- entry = (u_char *)(mpct + 1);
- for (i = 0; i < mpct->entry_count; i++) {
- switch (*entry) {
- case MPCT_ENTRY_PROCESSOR:
- case MPCT_ENTRY_IOAPIC:
- case MPCT_ENTRY_BUS:
- case MPCT_ENTRY_INT:
- case MPCT_ENTRY_LOCAL_INT:
- break;
- default:
- panic("%s: Unknown MP Config Entry %d\n", __func__,
- (int)*entry);
- }
- handler(entry, arg);
- entry += basetable_entry_types[*entry].length;
- }
- }
- #ifdef NEW_PCIB
- /*
- * Call the handler routine for each entry in the MP config extended
- * table.
- */
- static void
- mptable_walk_extended_table(mptable_extended_entry_handler *handler, void *arg)
- {
- ext_entry_ptr end, entry;
- if (mpet == NULL)
- return;
- entry = mpet;
- end = (ext_entry_ptr)((char *)mpet + mpct->extended_table_length);
- while (entry < end) {
- handler(entry, arg);
- entry = (ext_entry_ptr)((char *)entry + entry->length);
- }
- }
- #endif
- static void
- mptable_probe_cpus_handler(u_char *entry, void *arg)
- {
- proc_entry_ptr proc;
- u_int *cpu_mask;
- switch (*entry) {
- case MPCT_ENTRY_PROCESSOR:
- proc = (proc_entry_ptr)entry;
- if (proc->cpu_flags & PROCENTRY_FLAG_EN) {
- lapic_create(proc->apic_id, proc->cpu_flags &
- PROCENTRY_FLAG_BP);
- if (proc->apic_id < MAX_LAPIC_ID) {
- cpu_mask = (u_int *)arg;
- *cpu_mask |= (1ul << proc->apic_id);
- }
- }
- break;
- }
- }
- static void
- mptable_count_items_handler(u_char *entry, void *arg __unused)
- {
- io_apic_entry_ptr apic;
- bus_entry_ptr bus;
- switch (*entry) {
- case MPCT_ENTRY_BUS:
- bus = (bus_entry_ptr)entry;
- mptable_nbusses++;
- if (bus->bus_id > mptable_maxbusid)
- mptable_maxbusid = bus->bus_id;
- break;
- case MPCT_ENTRY_IOAPIC:
- apic = (io_apic_entry_ptr)entry;
- if (apic->apic_flags & IOAPICENTRY_FLAG_EN)
- mptable_nioapics++;
- break;
- }
- }
- /*
- * Count items in the table.
- */
- static void
- mptable_count_items(void)
- {
- /* Is this a pre-defined config? */
- if (mpfps->config_type != 0) {
- mptable_nioapics = 1;
- switch (mpfps->config_type) {
- case 1:
- case 2:
- case 3:
- case 4:
- mptable_nbusses = 1;
- break;
- case 5:
- case 6:
- case 7:
- mptable_nbusses = 2;
- break;
- default:
- panic("Unknown pre-defined MP Table config type %d",
- mpfps->config_type);
- }
- mptable_maxbusid = mptable_nbusses - 1;
- } else
- mptable_walk_table(mptable_count_items_handler, NULL);
- }
- /*
- * Add a bus or I/O APIC from an entry in the table.
- */
- static void
- mptable_parse_apics_and_busses_handler(u_char *entry, void *arg __unused)
- {
- io_apic_entry_ptr apic;
- bus_entry_ptr bus;
- enum busTypes bus_type;
- int i;
- switch (*entry) {
- case MPCT_ENTRY_BUS:
- bus = (bus_entry_ptr)entry;
- bus_type = lookup_bus_type(bus->bus_type);
- if (bus_type == UNKNOWN_BUSTYPE) {
- printf("MPTable: Unknown bus %d type \"", bus->bus_id);
- for (i = 0; i < 6; i++)
- printf("%c", bus->bus_type[i]);
- printf("\"\n");
- }
- busses[bus->bus_id].bus_id = bus->bus_id;
- busses[bus->bus_id].bus_type = bus_type;
- break;
- case MPCT_ENTRY_IOAPIC:
- apic = (io_apic_entry_ptr)entry;
- if (!(apic->apic_flags & IOAPICENTRY_FLAG_EN))
- break;
- if (apic->apic_id > MAX_APIC_ID)
- panic("%s: I/O APIC ID %d too high", __func__,
- apic->apic_id);
- if (ioapics[apic->apic_id] != NULL)
- panic("%s: Double APIC ID %d", __func__,
- apic->apic_id);
- ioapics[apic->apic_id] = ioapic_create(apic->apic_address,
- apic->apic_id, -1);
- break;
- default:
- break;
- }
- }
- /*
- * Enumerate I/O APIC's and busses.
- */
- static void
- mptable_parse_apics_and_busses(void)
- {
- /* Is this a pre-defined config? */
- if (mpfps->config_type != 0) {
- ioapics[2] = ioapic_create(DEFAULT_IO_APIC_BASE, 2, 0);
- busses[0].bus_id = 0;
- busses[0].bus_type = default_data[mpfps->config_type - 1][2];
- if (mptable_nbusses > 1) {
- busses[1].bus_id = 1;
- busses[1].bus_type =
- default_data[mpfps->config_type - 1][4];
- }
- } else
- mptable_walk_table(mptable_parse_apics_and_busses_handler,
- NULL);
- }
- /*
- * Determine conforming polarity for a given bus type.
- */
- static enum intr_polarity
- conforming_polarity(u_char src_bus, u_char src_bus_irq)
- {
- KASSERT(src_bus <= mptable_maxbusid, ("bus id %d too large", src_bus));
- switch (busses[src_bus].bus_type) {
- case ISA:
- case EISA:
- return (INTR_POLARITY_HIGH);
- case PCI:
- return (INTR_POLARITY_LOW);
- default:
- panic("%s: unknown bus type %d", __func__,
- busses[src_bus].bus_type);
- }
- }
- /*
- * Determine conforming trigger for a given bus type.
- */
- static enum intr_trigger
- conforming_trigger(u_char src_bus, u_char src_bus_irq)
- {
- KASSERT(src_bus <= mptable_maxbusid, ("bus id %d too large", src_bus));
- switch (busses[src_bus].bus_type) {
- case ISA:
- #ifndef PC98
- if (elcr_found)
- return (elcr_read_trigger(src_bus_irq));
- else
- #endif
- return (INTR_TRIGGER_EDGE);
- case PCI:
- return (INTR_TRIGGER_LEVEL);
- #ifndef PC98
- case EISA:
- KASSERT(src_bus_irq < 16, ("Invalid EISA IRQ %d", src_bus_irq));
- KASSERT(elcr_found, ("Missing ELCR"));
- return (elcr_read_trigger(src_bus_irq));
- #endif
- default:
- panic("%s: unknown bus type %d", __func__,
- busses[src_bus].bus_type);
- }
- }
- static enum intr_polarity
- intentry_polarity(int_entry_ptr intr)
- {
- switch (intr->int_flags & INTENTRY_FLAGS_POLARITY) {
- case INTENTRY_FLAGS_POLARITY_CONFORM:
- return (conforming_polarity(intr->src_bus_id,
- intr->src_bus_irq));
- case INTENTRY_FLAGS_POLARITY_ACTIVEHI:
- return (INTR_POLARITY_HIGH);
- case INTENTRY_FLAGS_POLARITY_ACTIVELO:
- return (INTR_POLARITY_LOW);
- default:
- panic("Bogus interrupt flags");
- }
- }
- static enum intr_trigger
- intentry_trigger(int_entry_ptr intr)
- {
- switch (intr->int_flags & INTENTRY_FLAGS_TRIGGER) {
- case INTENTRY_FLAGS_TRIGGER_CONFORM:
- return (conforming_trigger(intr->src_bus_id,
- intr->src_bus_irq));
- case INTENTRY_FLAGS_TRIGGER_EDGE:
- return (INTR_TRIGGER_EDGE);
- case INTENTRY_FLAGS_TRIGGER_LEVEL:
- return (INTR_TRIGGER_LEVEL);
- default:
- panic("Bogus interrupt flags");
- }
- }
- /*
- * Parse an interrupt entry for an I/O interrupt routed to a pin on an I/O APIC.
- */
- static void
- mptable_parse_io_int(int_entry_ptr intr)
- {
- void *ioapic;
- u_int pin, apic_id;
- apic_id = intr->dst_apic_id;
- if (intr->dst_apic_id == 0xff) {
- /*
- * An APIC ID of 0xff means that the interrupt is connected
- * to the specified pin on all I/O APICs in the system. If
- * there is only one I/O APIC, then use that APIC to route
- * the interrupts. If there is more than one I/O APIC, then
- * punt.
- */
- if (mptable_nioapics == 1) {
- apic_id = 0;
- while (ioapics[apic_id] == NULL)
- apic_id++;
- } else {
- printf(
- "MPTable: Ignoring global interrupt entry for pin %d\n",
- intr->dst_apic_int);
- return;
- }
- }
- if (apic_id > MAX_APIC_ID) {
- printf("MPTable: Ignoring interrupt entry for ioapic%d\n",
- intr->dst_apic_id);
- return;
- }
- ioapic = ioapics[apic_id];
- if (ioapic == NULL) {
- printf(
- "MPTable: Ignoring interrupt entry for missing ioapic%d\n",
- apic_id);
- return;
- }
- pin = intr->dst_apic_int;
- switch (intr->int_type) {
- case INTENTRY_TYPE_INT:
- switch (busses[intr->src_bus_id].bus_type) {
- case NOBUS:
- panic("interrupt from missing bus");
- case ISA:
- case EISA:
- if (busses[intr->src_bus_id].bus_type == ISA)
- ioapic_set_bus(ioapic, pin, APIC_BUS_ISA);
- else
- ioapic_set_bus(ioapic, pin, APIC_BUS_EISA);
- if (intr->src_bus_irq == pin)
- break;
- ioapic_remap_vector(ioapic, pin, intr->src_bus_irq);
- if (ioapic_get_vector(ioapic, intr->src_bus_irq) ==
- intr->src_bus_irq)
- ioapic_disable_pin(ioapic, intr->src_bus_irq);
- break;
- case PCI:
- ioapic_set_bus(ioapic, pin, APIC_BUS_PCI);
- break;
- default:
- ioapic_set_bus(ioapic, pin, APIC_BUS_UNKNOWN);
- break;
- }
- break;
- case INTENTRY_TYPE_NMI:
- ioapic_set_nmi(ioapic, pin);
- break;
- case INTENTRY_TYPE_SMI:
- ioapic_set_smi(ioapic, pin);
- break;
- case INTENTRY_TYPE_EXTINT:
- ioapic_set_extint(ioapic, pin);
- break;
- default:
- panic("%s: invalid interrupt entry type %d\n", __func__,
- intr->int_type);
- }
- if (intr->int_type == INTENTRY_TYPE_INT ||
- (intr->int_flags & INTENTRY_FLAGS_TRIGGER) !=
- INTENTRY_FLAGS_TRIGGER_CONFORM)
- ioapic_set_triggermode(ioapic, pin, intentry_trigger(intr));
- if (intr->int_type == INTENTRY_TYPE_INT ||
- (intr->int_flags & INTENTRY_FLAGS_POLARITY) !=
- INTENTRY_FLAGS_POLARITY_CONFORM)
- ioapic_set_polarity(ioapic, pin, intentry_polarity(intr));
- }
- /*
- * Parse an interrupt entry for a local APIC LVT pin.
- */
- static void
- mptable_parse_local_int(int_entry_ptr intr)
- {
- u_int apic_id, pin;
- if (intr->dst_apic_id == 0xff)
- apic_id = APIC_ID_ALL;
- else
- apic_id = intr->dst_apic_id;
- if (intr->dst_apic_int == 0)
- pin = LVT_LINT0;
- else
- pin = LVT_LINT1;
- switch (intr->int_type) {
- case INTENTRY_TYPE_INT:
- #if 1
- printf(
- "MPTable: Ignoring vectored local interrupt for LINTIN%d vector %d\n",
- intr->dst_apic_int, intr->src_bus_irq);
- return;
- #else
- lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_FIXED);
- break;
- #endif
- case INTENTRY_TYPE_NMI:
- lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI);
- break;
- case INTENTRY_TYPE_SMI:
- lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_SMI);
- break;
- case INTENTRY_TYPE_EXTINT:
- lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_EXTINT);
- break;
- default:
- panic("%s: invalid interrupt entry type %d\n", __func__,
- intr->int_type);
- }
- if ((intr->int_flags & INTENTRY_FLAGS_TRIGGER) !=
- INTENTRY_FLAGS_TRIGGER_CONFORM)
- lapic_set_lvt_triggermode(apic_id, pin,
- intentry_trigger(intr));
- if ((intr->int_flags & INTENTRY_FLAGS_POLARITY) !=
- INTENTRY_FLAGS_POLARITY_CONFORM)
- lapic_set_lvt_polarity(apic_id, pin, intentry_polarity(intr));
- }
- /*
- * Parse interrupt entries.
- */
- static void
- mptable_parse_ints_handler(u_char *entry, void *arg __unused)
- {
- int_entry_ptr intr;
- intr = (int_entry_ptr)entry;
- switch (*entry) {
- case MPCT_ENTRY_INT:
- mptable_parse_io_int(intr);
- break;
- case MPCT_ENTRY_LOCAL_INT:
- mptable_parse_local_int(intr);
- break;
- }
- }
- /*
- * Configure interrupt pins for a default configuration. For details see
- * Table 5-2 in Section 5 of the MP Table specification.
- */
- static void
- mptable_parse_default_config_ints(void)
- {
- struct INTENTRY entry;
- int pin;
- /*
- * All default configs route IRQs from bus 0 to the first 16 pins
- * of the first I/O APIC with an APIC ID of 2.
- */
- entry.type = MPCT_ENTRY_INT;
- entry.int_flags = INTENTRY_FLAGS_POLARITY_CONFORM |
- INTENTRY_FLAGS_TRIGGER_CONFORM;
- entry.src_bus_id = 0;
- entry.dst_apic_id = 2;
- /* Run through all 16 pins. */
- for (pin = 0; pin < 16; pin++) {
- entry.dst_apic_int = pin;
- switch (pin) {
- case 0:
- /* Pin 0 is an ExtINT pin. */
- entry.int_type = INTENTRY_TYPE_EXTINT;
- break;
- case 2:
- /* IRQ 0 is routed to pin 2. */
- entry.int_type = INTENTRY_TYPE_INT;
- entry.src_bus_irq = 0;
- break;
- default:
- /* All other pins are identity mapped. */
- entry.int_type = INTENTRY_TYPE_INT;
- entry.src_bus_irq = pin;
- break;
- }
- mptable_parse_io_int(&entry);
- }
- /* Certain configs disable certain pins. */
- if (mpfps->config_type == 7)
- ioapic_disable_pin(ioapics[2], 0);
- if (mpfps->config_type == 2) {
- ioapic_disable_pin(ioapics[2], 2);
- ioapic_disable_pin(ioapics[2], 13);
- }
- }
- /*
- * Configure the interrupt pins
- */
- static void
- mptable_parse_ints(void)
- {
- /* Is this a pre-defined config? */
- if (mpfps->config_type != 0) {
- /* Configure LINT pins. */
- lapic_set_lvt_mode(APIC_ID_ALL, LVT_LINT0, APIC_LVT_DM_EXTINT);
- lapic_set_lvt_mode(APIC_ID_ALL, LVT_LINT1, APIC_LVT_DM_NMI);
- /* Configure I/O APIC pins. */
- mptable_parse_default_config_ints();
- } else
- mptable_walk_table(mptable_parse_ints_handler, NULL);
- }
- #ifdef MPTABLE_FORCE_HTT
- /*
- * Perform a hyperthreading "fix-up" to enumerate any logical CPU's
- * that aren't already listed in the table.
- *
- * XXX: We assume that all of the physical CPUs in the
- * system have the same number of logical CPUs.
- *
- * XXX: We assume that APIC ID's are allocated such that
- * the APIC ID's for a physical processor are aligned
- * with the number of logical CPU's in the processor.
- */
- static void
- mptable_hyperthread_fixup(u_int id_mask)
- {
- u_int i, id, logical_cpus;
- /* Nothing to do if there is no HTT support. */
- if ((cpu_feature & CPUID_HTT) == 0)
- return;
- logical_cpus = (cpu_procinfo & CPUID_HTT_CORES) >> 16;
- if (logical_cpus <= 1)
- return;
- /*
- * For each APIC ID of a CPU that is set in the mask,
- * scan the other candidate APIC ID's for this
- * physical processor. If any of those ID's are
- * already in the table, then kill the fixup.
- */
- for (id = 0; id <= MAX_LAPIC_ID; id++) {
- if ((id_mask & 1 << id) == 0)
- continue;
- /* First, make sure we are on a logical_cpus boundary. */
- if (id % logical_cpus != 0)
- return;
- for (i = id + 1; i < id + logical_cpus; i++)
- if ((id_mask & 1 << i) != 0)
- return;
- }
- /*
- * Ok, the ID's checked out, so perform the fixup by
- * adding the logical CPUs.
- */
- while ((id = ffs(id_mask)) != 0) {
- id--;
- for (i = id + 1; i < id + logical_cpus; i++) {
- if (bootverbose)
- printf(
- "MPTable: Adding logical CPU %d from main CPU %d\n",
- i, id);
- lapic_create(i, 0);
- }
- id_mask &= ~(1 << id);
- }
- }
- #endif /* MPTABLE_FORCE_HTT */
- /*
- * Support code for routing PCI interrupts using the MP Table.
- */
- static void
- mptable_pci_setup(void)
- {
- int i;
- /*
- * Find the first pci bus and call it 0. Panic if pci0 is not
- * bus zero and there are multiple PCI busses.
- */
- for (i = 0; i <= mptable_maxbusid; i++)
- if (busses[i].bus_type == PCI) {
- if (pci0 == -1)
- pci0 = i;
- else if (pci0 != 0)
- panic(
- "MPTable contains multiple PCI busses but no PCI bus 0");
- }
- }
- static void
- mptable_pci_probe_table_handler(u_char *entry, void *arg)
- {
- struct pci_probe_table_args *args;
- int_entry_ptr intr;
- if (*entry != MPCT_ENTRY_INT)
- return;
- intr = (int_entry_ptr)entry;
- args = (struct pci_probe_table_args *)arg;
- KASSERT(args->bus <= mptable_maxbusid,
- ("bus %d is too big", args->bus));
- KASSERT(busses[args->bus].bus_type == PCI, ("probing for non-PCI bus"));
- if (intr->src_bus_id == args->bus)
- args->found = 1;
- }
- int
- mptable_pci_probe_table(int bus)
- {
- struct pci_probe_table_args args;
- if (bus < 0)
- return (EINVAL);
- if (mpct == NULL || pci0 == -1 || pci0 + bus > mptable_maxbusid)
- return (ENXIO);
- if (busses[pci0 + bus].bus_type != PCI)
- return (ENXIO);
- args.bus = pci0 + bus;
- args.found = 0;
- mptable_walk_table(mptable_pci_probe_table_handler, &args);
- if (args.found == 0)
- return (ENXIO);
- return (0);
- }
- static void
- mptable_pci_route_interrupt_handler(u_char *entry, void *arg)
- {
- struct pci_route_interrupt_args *args;
- int_entry_ptr intr;
- int vector;
- if (*entry != MPCT_ENTRY_INT)
- return;
- intr = (int_entry_ptr)entry;
- args = (struct pci_route_interrupt_args *)arg;
- if (intr->src_bus_id != args->bus || intr->src_bus_irq != args->irq)
- return;
- /* Make sure the APIC maps to a known APIC. */
- KASSERT(ioapics[intr->dst_apic_id] != NULL,
- ("No I/O APIC %d to route interrupt to", intr->dst_apic_id));
- /*
- * Look up the vector for this APIC / pin combination. If we
- * have previously matched an entry for this PCI IRQ but it
- * has the same vector as this entry, just return. Otherwise,
- * we use the vector for this APIC / pin combination.
- */
- vector = ioapic_get_vector(ioapics[intr->dst_apic_id],
- intr->dst_apic_int);
- if (args->vector == vector)
- return;
- KASSERT(args->vector == -1,
- ("Multiple IRQs for PCI interrupt %d.%d.INT%c: %d and %d\n",
- args->bus, args->irq >> 2, 'A' + (args->irq & 0x3), args->vector,
- vector));
- args->vector = vector;
- }
- int
- mptable_pci_route_interrupt(device_t pcib, device_t dev, int pin)
- {
- struct pci_route_interrupt_args args;
- int slot;
- /* Like ACPI, pin numbers are 0-3, not 1-4. */
- pin--;
- KASSERT(pci0 != -1, ("do not know how to route PCI interrupts"));
- args.bus = pci_get_bus(dev) + pci0;
- slot = pci_get_slot(dev);
- /*
- * PCI interrupt entries in the MP Table encode both the slot and
- * pin into the IRQ with the pin being the two least significant
- * bits, the slot being the next five bits, and the most significant
- * bit being reserved.
- */
- args.irq = slot << 2 | pin;
- args.vector = -1;
- mptable_walk_table(mptable_pci_route_interrupt_handler, &args);
- if (args.vector < 0) {
- device_printf(pcib, "unable to route slot %d INT%c\n", slot,
- 'A' + pin);
- return (PCI_INVALID_IRQ);
- }
- if (bootverbose)
- device_printf(pcib, "slot %d INT%c routed to irq %d\n", slot,
- 'A' + pin, args.vector);
- return (args.vector);
- }
- #ifdef NEW_PCIB
- struct host_res_args {
- struct mptable_hostb_softc *sc;
- device_t dev;
- u_char bus;
- };
- /*
- * Initialize a Host-PCI bridge so it can restrict resource allocation
- * requests to the resources it actually decodes according to MP
- * config table extended entries.
- */
- static void
- mptable_host_res_handler(ext_entry_ptr entry, void *arg)
- {
- struct host_res_args *args;
- cbasm_entry_ptr cbasm;
- sas_entry_ptr sas;
- const char *name;
- uint64_t start, end;
- int error, *flagp, flags, type;
- args = arg;
- switch (entry->type) {
- case MPCT_EXTENTRY_SAS:
- sas = (sas_entry_ptr)entry;
- if (sas->bus_id != args->bus)
- break;
- switch (sas->address_type) {
- case SASENTRY_TYPE_IO:
- type = SYS_RES_IOPORT;
- flags = 0;
- break;
- case SASENTRY_TYPE_MEMORY:
- type = SYS_RES_MEMORY;
- flags = 0;
- break;
- case SASENTRY_TYPE_PREFETCH:
- type = SYS_RES_MEMORY;
- flags = RF_PREFETCHABLE;
- break;
- default:
- printf(
- "MPTable: Unknown systems address space type for bus %u: %d\n",
- sas->bus_id, sas->address_type);
- return;
- }
- start = sas->address_base;
- end = sas->address_base + sas->address_length - 1;
- #ifdef __i386__
- if (start > ULONG_MAX) {
- device_printf(args->dev,
- "Ignoring %d range above 4GB (%#jx-%#jx)\n",
- type, (uintmax_t)start, (uintmax_t)end);
- break;
- }
- if (end > ULONG_MAX) {
- device_printf(args->dev,
- "Truncating end of %d range above 4GB (%#jx-%#jx)\n",
- type, (uintmax_t)start, (uintmax_t)end);
- end = ULONG_MAX;
- }
- #endif
- error = pcib_host_res_decodes(&args->sc->sc_host_res, type,
- start, end, flags);
- if (error)
- panic("Failed to manage %d range (%#jx-%#jx): %d",
- type, (uintmax_t)start, (uintmax_t)end, error);
- break;
- case MPCT_EXTENTRY_CBASM:
- cbasm = (cbasm_entry_ptr)entry;
- if (cbasm->bus_id != args->bus)
- break;
- switch (cbasm->predefined_range) {
- case CBASMENTRY_RANGE_ISA_IO:
- flagp = &args->sc->sc_decodes_isa_io;
- name = "ISA I/O";
- break;
- case CBASMENTRY_RANGE_VGA_IO:
- flagp = &args->sc->sc_decodes_vga_io;
- name = "VGA I/O";
- break;
- default:
- printf(
- "MPTable: Unknown compatiblity address space range for bus %u: %d\n",
- cbasm->bus_id, cbasm->predefined_range);
- return;
- }
- if (*flagp != 0)
- printf(
- "MPTable: Duplicate compatibility %s range for bus %u\n",
- name, cbasm->bus_id);
- switch (cbasm->address_mod) {
- case CBASMENTRY_ADDRESS_MOD_ADD:
- *flagp = 1;
- if (bootverbose)
- device_printf(args->dev, "decoding %s ports\n",
- name);
- break;
- case CBASMENTRY_ADDRESS_MOD_SUBTRACT:
- *flagp = -1;
- if (bootverbose)
- device_printf(args->dev,
- "not decoding %s ports\n", name);
- break;
- default:
- printf(
- "MPTable: Unknown compatibility address space modifier: %u\n",
- cbasm->address_mod);
- break;
- }
- break;
- }
- }
- void
- mptable_pci_host_res_init(device_t pcib)
- {
- struct host_res_args args;
- KASSERT(pci0 != -1, ("do not know how to map PCI bus IDs"));
- args.bus = pci_get_bus(pcib) + pci0;
- args.dev = pcib;
- args.sc = device_get_softc(pcib);
- if (pcib_host_res_init(pcib, &args.sc->sc_host_res) != 0)
- panic("failed to init hostb resources");
- mptable_walk_extended_table(mptable_host_res_handler, &args);
- }
- #endif