3f9fa059d7
startup and genericize it so it can be reused to map other tables as well: - Add a routine to walk a list of ACPI subtables such as those used in the APIC and SRAT tables in the MI acpi(4) driver. - Move the routines for mapping and unmapping an ACPI table as well as mapping the RSDT or XSDT and searching for a table with a given signature out into acpica_machdep.c for both amd64 and i386.
576 lines
16 KiB
C
576 lines
16 KiB
C
/*-
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* Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/smp.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/apicreg.h>
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#include <machine/intr_machdep.h>
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#include <machine/apicvar.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/actables.h>
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#include <dev/acpica/acpivar.h>
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#include <dev/pci/pcivar.h>
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/* These two arrays are indexed by APIC IDs. */
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struct ioapic_info {
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void *io_apic;
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UINT32 io_vector;
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} ioapics[MAX_APIC_ID + 1];
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struct lapic_info {
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u_int la_enabled:1;
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u_int la_acpi_id:8;
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} lapics[MAX_APIC_ID + 1];
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static int madt_found_sci_override;
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static ACPI_TABLE_MADT *madt;
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static vm_paddr_t madt_physaddr;
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static vm_offset_t madt_length;
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MALLOC_DEFINE(M_MADT, "madt_table", "ACPI MADT Table Items");
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static enum intr_polarity interrupt_polarity(UINT16 IntiFlags, UINT8 Source);
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static enum intr_trigger interrupt_trigger(UINT16 IntiFlags, UINT8 Source);
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static int madt_find_cpu(u_int acpi_id, u_int *apic_id);
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static int madt_find_interrupt(int intr, void **apic, u_int *pin);
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static void madt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg);
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static void madt_parse_interrupt_override(
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ACPI_MADT_INTERRUPT_OVERRIDE *intr);
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static void madt_parse_ints(ACPI_SUBTABLE_HEADER *entry,
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void *arg __unused);
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static void madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi);
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static void madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi);
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static int madt_probe(void);
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static int madt_probe_cpus(void);
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static void madt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry,
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void *arg __unused);
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static void madt_register(void *dummy);
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static int madt_setup_local(void);
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static int madt_setup_io(void);
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static void madt_walk_table(acpi_subtable_handler *handler, void *arg);
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static struct apic_enumerator madt_enumerator = {
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"MADT",
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madt_probe,
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madt_probe_cpus,
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madt_setup_local,
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madt_setup_io
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};
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/*
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* Look for an ACPI Multiple APIC Description Table ("APIC")
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*/
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static int
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madt_probe(void)
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{
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madt_physaddr = acpi_find_table(ACPI_SIG_MADT);
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if (madt_physaddr == 0)
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return (ENXIO);
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return (0);
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}
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/*
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* Run through the MP table enumerating CPUs.
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*/
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static int
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madt_probe_cpus(void)
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{
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madt = acpi_map_table(madt_physaddr, ACPI_SIG_MADT);
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madt_length = madt->Header.Length;
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KASSERT(madt != NULL, ("Unable to re-map MADT"));
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madt_walk_table(madt_probe_cpus_handler, NULL);
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acpi_unmap_table(madt);
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madt = NULL;
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return (0);
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}
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/*
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* Initialize the local APIC on the BSP.
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*/
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static int
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madt_setup_local(void)
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{
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madt = pmap_mapbios(madt_physaddr, madt_length);
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lapic_init(madt->Address);
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printf("ACPI APIC Table: <%.*s %.*s>\n",
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(int)sizeof(madt->Header.OemId), madt->Header.OemId,
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(int)sizeof(madt->Header.OemTableId), madt->Header.OemTableId);
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/*
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* We ignore 64-bit local APIC override entries. Should we
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* perhaps emit a warning here if we find one?
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*/
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return (0);
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}
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/*
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* Enumerate I/O APICs and setup interrupt sources.
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*/
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static int
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madt_setup_io(void)
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{
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void *ioapic;
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u_int pin;
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int i;
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/* Try to initialize ACPI so that we can access the FADT. */
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i = acpi_Startup();
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if (ACPI_FAILURE(i)) {
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printf("MADT: ACPI Startup failed with %s\n",
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AcpiFormatException(i));
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printf("Try disabling either ACPI or apic support.\n");
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panic("Using MADT but ACPI doesn't work");
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}
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/* First, we run through adding I/O APIC's. */
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madt_walk_table(madt_parse_apics, NULL);
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/* Second, we run through the table tweaking interrupt sources. */
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madt_walk_table(madt_parse_ints, NULL);
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/*
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* If there was not an explicit override entry for the SCI,
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* force it to use level trigger and active-low polarity.
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*/
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if (!madt_found_sci_override) {
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if (madt_find_interrupt(AcpiGbl_FADT.SciInterrupt, &ioapic,
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&pin) != 0)
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printf("MADT: Could not find APIC for SCI IRQ %u\n",
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AcpiGbl_FADT.SciInterrupt);
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else {
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printf(
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"MADT: Forcing active-low polarity and level trigger for SCI\n");
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ioapic_set_polarity(ioapic, pin, INTR_POLARITY_LOW);
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ioapic_set_triggermode(ioapic, pin, INTR_TRIGGER_LEVEL);
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}
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}
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/* Third, we register all the I/O APIC's. */
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for (i = 0; i <= MAX_APIC_ID; i++)
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if (ioapics[i].io_apic != NULL)
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ioapic_register(ioapics[i].io_apic);
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/* Finally, we throw the switch to enable the I/O APIC's. */
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acpi_SetDefaultIntrModel(ACPI_INTR_APIC);
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return (0);
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}
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static void
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madt_register(void *dummy __unused)
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{
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apic_register_enumerator(&madt_enumerator);
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}
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SYSINIT(madt_register, SI_SUB_TUNABLES - 1, SI_ORDER_FIRST,
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madt_register, NULL);
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/*
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* Call the handler routine for each entry in the MADT table.
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*/
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static void
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madt_walk_table(acpi_subtable_handler *handler, void *arg)
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{
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acpi_walk_subtables(madt + 1, (char *)madt + madt->Header.Length,
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handler, arg);
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}
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static void
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madt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry, void *arg)
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{
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ACPI_MADT_LOCAL_APIC *proc;
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struct lapic_info *la;
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switch (entry->Type) {
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case ACPI_MADT_TYPE_LOCAL_APIC:
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/*
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* The MADT does not include a BSP flag, so we have to
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* let the MP code figure out which CPU is the BSP on
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* its own.
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*/
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proc = (ACPI_MADT_LOCAL_APIC *)entry;
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if (bootverbose)
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printf("MADT: Found CPU APIC ID %u ACPI ID %u: %s\n",
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proc->Id, proc->ProcessorId,
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(proc->LapicFlags & ACPI_MADT_ENABLED) ?
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"enabled" : "disabled");
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if (!(proc->LapicFlags & ACPI_MADT_ENABLED))
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break;
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if (proc->Id > MAX_APIC_ID)
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panic("%s: CPU ID %u too high", __func__, proc->Id);
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la = &lapics[proc->Id];
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KASSERT(la->la_enabled == 0,
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("Duplicate local APIC ID %u", proc->Id));
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la->la_enabled = 1;
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la->la_acpi_id = proc->ProcessorId;
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lapic_create(proc->Id, 0);
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break;
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}
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}
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/*
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* Add an I/O APIC from an entry in the table.
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*/
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static void
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madt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg __unused)
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{
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ACPI_MADT_IO_APIC *apic;
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switch (entry->Type) {
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case ACPI_MADT_TYPE_IO_APIC:
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apic = (ACPI_MADT_IO_APIC *)entry;
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if (bootverbose)
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printf(
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"MADT: Found IO APIC ID %u, Interrupt %u at %p\n",
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apic->Id, apic->GlobalIrqBase,
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(void *)(uintptr_t)apic->Address);
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if (apic->Id > MAX_APIC_ID)
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panic("%s: I/O APIC ID %u too high", __func__,
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apic->Id);
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if (ioapics[apic->Id].io_apic != NULL)
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panic("%s: Double APIC ID %u", __func__, apic->Id);
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if (apic->GlobalIrqBase >= FIRST_MSI_INT) {
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printf("MADT: Ignoring bogus I/O APIC ID %u", apic->Id);
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break;
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}
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ioapics[apic->Id].io_apic = ioapic_create(apic->Address,
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apic->Id, apic->GlobalIrqBase);
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ioapics[apic->Id].io_vector = apic->GlobalIrqBase;
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break;
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default:
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break;
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}
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}
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/*
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* Determine properties of an interrupt source. Note that for ACPI these
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* functions are only used for ISA interrupts, so we assume ISA bus values
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* (Active Hi, Edge Triggered) for conforming values except for the ACPI
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* SCI for which we use Active Lo, Level Triggered.
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*/
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static enum intr_polarity
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interrupt_polarity(UINT16 IntiFlags, UINT8 Source)
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{
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switch (IntiFlags & ACPI_MADT_POLARITY_MASK) {
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case ACPI_MADT_POLARITY_CONFORMS:
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if (Source == AcpiGbl_FADT.SciInterrupt)
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return (INTR_POLARITY_LOW);
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else
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return (INTR_POLARITY_HIGH);
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case ACPI_MADT_POLARITY_ACTIVE_HIGH:
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return (INTR_POLARITY_HIGH);
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case ACPI_MADT_POLARITY_ACTIVE_LOW:
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return (INTR_POLARITY_LOW);
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default:
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panic("Bogus Interrupt Polarity");
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}
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}
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static enum intr_trigger
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interrupt_trigger(UINT16 IntiFlags, UINT8 Source)
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{
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switch (IntiFlags & ACPI_MADT_TRIGGER_MASK) {
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case ACPI_MADT_TRIGGER_CONFORMS:
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if (Source == AcpiGbl_FADT.SciInterrupt)
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return (INTR_TRIGGER_LEVEL);
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else
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return (INTR_TRIGGER_EDGE);
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case ACPI_MADT_TRIGGER_EDGE:
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return (INTR_TRIGGER_EDGE);
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case ACPI_MADT_TRIGGER_LEVEL:
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return (INTR_TRIGGER_LEVEL);
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default:
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panic("Bogus Interrupt Trigger Mode");
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}
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}
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/*
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* Find the local APIC ID associated with a given ACPI Processor ID.
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*/
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static int
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madt_find_cpu(u_int acpi_id, u_int *apic_id)
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{
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int i;
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for (i = 0; i <= MAX_APIC_ID; i++) {
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if (!lapics[i].la_enabled)
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continue;
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if (lapics[i].la_acpi_id != acpi_id)
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continue;
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*apic_id = i;
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return (0);
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}
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return (ENOENT);
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}
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/*
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* Find the IO APIC and pin on that APIC associated with a given global
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* interrupt.
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*/
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static int
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madt_find_interrupt(int intr, void **apic, u_int *pin)
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{
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int i, best;
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best = -1;
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for (i = 0; i <= MAX_APIC_ID; i++) {
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if (ioapics[i].io_apic == NULL ||
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ioapics[i].io_vector > intr)
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continue;
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if (best == -1 ||
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ioapics[best].io_vector < ioapics[i].io_vector)
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best = i;
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}
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if (best == -1)
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return (ENOENT);
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*apic = ioapics[best].io_apic;
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*pin = intr - ioapics[best].io_vector;
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if (*pin > 32)
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printf("WARNING: Found intpin of %u for vector %d\n", *pin,
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intr);
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return (0);
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}
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/*
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* Parse an interrupt source override for an ISA interrupt.
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*/
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static void
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madt_parse_interrupt_override(ACPI_MADT_INTERRUPT_OVERRIDE *intr)
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{
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void *new_ioapic, *old_ioapic;
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u_int new_pin, old_pin;
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enum intr_trigger trig;
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enum intr_polarity pol;
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char buf[64];
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if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->SourceIrq == 0 &&
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intr->GlobalIrq == 2) {
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if (bootverbose)
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printf("MADT: Skipping timer override\n");
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return;
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}
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if (bootverbose)
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printf("MADT: Interrupt override: source %u, irq %u\n",
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intr->SourceIrq, intr->GlobalIrq);
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KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero"));
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if (madt_find_interrupt(intr->GlobalIrq, &new_ioapic, &new_pin) != 0) {
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printf("MADT: Could not find APIC for vector %u (IRQ %u)\n",
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intr->GlobalIrq, intr->SourceIrq);
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return;
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}
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/*
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* Lookup the appropriate trigger and polarity modes for this
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* entry.
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*/
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trig = interrupt_trigger(intr->IntiFlags, intr->SourceIrq);
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pol = interrupt_polarity(intr->IntiFlags, intr->SourceIrq);
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/*
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* If the SCI is identity mapped but has edge trigger and
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* active-hi polarity or the force_sci_lo tunable is set,
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* force it to use level/lo.
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*/
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if (intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) {
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madt_found_sci_override = 1;
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if (getenv_string("hw.acpi.sci.trigger", buf, sizeof(buf))) {
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if (tolower(buf[0]) == 'e')
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trig = INTR_TRIGGER_EDGE;
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else if (tolower(buf[0]) == 'l')
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trig = INTR_TRIGGER_LEVEL;
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else
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panic(
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"Invalid trigger %s: must be 'edge' or 'level'",
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buf);
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printf("MADT: Forcing SCI to %s trigger\n",
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trig == INTR_TRIGGER_EDGE ? "edge" : "level");
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}
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if (getenv_string("hw.acpi.sci.polarity", buf, sizeof(buf))) {
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if (tolower(buf[0]) == 'h')
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pol = INTR_POLARITY_HIGH;
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else if (tolower(buf[0]) == 'l')
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pol = INTR_POLARITY_LOW;
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else
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panic(
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"Invalid polarity %s: must be 'high' or 'low'",
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buf);
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printf("MADT: Forcing SCI to active %s polarity\n",
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pol == INTR_POLARITY_HIGH ? "high" : "low");
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}
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}
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/* Remap the IRQ if it is mapped to a different interrupt vector. */
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if (intr->SourceIrq != intr->GlobalIrq) {
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/*
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* If the SCI is remapped to a non-ISA global interrupt,
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* then override the vector we use to setup and allocate
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* the interrupt.
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*/
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if (intr->GlobalIrq > 15 &&
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intr->SourceIrq == AcpiGbl_FADT.SciInterrupt)
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acpi_OverrideInterruptLevel(intr->GlobalIrq);
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else
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ioapic_remap_vector(new_ioapic, new_pin,
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intr->SourceIrq);
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if (madt_find_interrupt(intr->SourceIrq, &old_ioapic,
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&old_pin) != 0)
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printf("MADT: Could not find APIC for source IRQ %u\n",
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intr->SourceIrq);
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else if (ioapic_get_vector(old_ioapic, old_pin) ==
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intr->SourceIrq)
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ioapic_disable_pin(old_ioapic, old_pin);
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}
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/* Program the polarity and trigger mode. */
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ioapic_set_triggermode(new_ioapic, new_pin, trig);
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ioapic_set_polarity(new_ioapic, new_pin, pol);
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}
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/*
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* Parse an entry for an NMI routed to an IO APIC.
|
|
*/
|
|
static void
|
|
madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi)
|
|
{
|
|
void *ioapic;
|
|
u_int pin;
|
|
|
|
if (madt_find_interrupt(nmi->GlobalIrq, &ioapic, &pin) != 0) {
|
|
printf("MADT: Could not find APIC for vector %u\n",
|
|
nmi->GlobalIrq);
|
|
return;
|
|
}
|
|
|
|
ioapic_set_nmi(ioapic, pin);
|
|
if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS))
|
|
ioapic_set_triggermode(ioapic, pin,
|
|
interrupt_trigger(nmi->IntiFlags, 0));
|
|
if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS))
|
|
ioapic_set_polarity(ioapic, pin,
|
|
interrupt_polarity(nmi->IntiFlags, 0));
|
|
}
|
|
|
|
/*
|
|
* Parse an entry for an NMI routed to a local APIC LVT pin.
|
|
*/
|
|
static void
|
|
madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi)
|
|
{
|
|
u_int apic_id, pin;
|
|
|
|
if (nmi->ProcessorId == 0xff)
|
|
apic_id = APIC_ID_ALL;
|
|
else if (madt_find_cpu(nmi->ProcessorId, &apic_id) != 0) {
|
|
if (bootverbose)
|
|
printf("MADT: Ignoring local NMI routed to "
|
|
"ACPI CPU %u\n", nmi->ProcessorId);
|
|
return;
|
|
}
|
|
if (nmi->Lint == 0)
|
|
pin = LVT_LINT0;
|
|
else
|
|
pin = LVT_LINT1;
|
|
lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI);
|
|
if (!(nmi->IntiFlags & ACPI_MADT_TRIGGER_CONFORMS))
|
|
lapic_set_lvt_triggermode(apic_id, pin,
|
|
interrupt_trigger(nmi->IntiFlags, 0));
|
|
if (!(nmi->IntiFlags & ACPI_MADT_POLARITY_CONFORMS))
|
|
lapic_set_lvt_polarity(apic_id, pin,
|
|
interrupt_polarity(nmi->IntiFlags, 0));
|
|
}
|
|
|
|
/*
|
|
* Parse interrupt entries.
|
|
*/
|
|
static void
|
|
madt_parse_ints(ACPI_SUBTABLE_HEADER *entry, void *arg __unused)
|
|
{
|
|
|
|
switch (entry->Type) {
|
|
case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE:
|
|
madt_parse_interrupt_override(
|
|
(ACPI_MADT_INTERRUPT_OVERRIDE *)entry);
|
|
break;
|
|
case ACPI_MADT_TYPE_NMI_SOURCE:
|
|
madt_parse_nmi((ACPI_MADT_NMI_SOURCE *)entry);
|
|
break;
|
|
case ACPI_MADT_TYPE_LOCAL_APIC_NMI:
|
|
madt_parse_local_nmi((ACPI_MADT_LOCAL_APIC_NMI *)entry);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Setup per-CPU ACPI IDs.
|
|
*/
|
|
static void
|
|
madt_set_ids(void *dummy)
|
|
{
|
|
struct lapic_info *la;
|
|
struct pcpu *pc;
|
|
u_int i;
|
|
|
|
if (madt == NULL)
|
|
return;
|
|
for (i = 0; i < MAXCPU; i++) {
|
|
if (CPU_ABSENT(i))
|
|
continue;
|
|
pc = pcpu_find(i);
|
|
KASSERT(pc != NULL, ("no pcpu data for CPU %u", i));
|
|
la = &lapics[pc->pc_apic_id];
|
|
if (!la->la_enabled)
|
|
panic("APIC: CPU with APIC ID %u is not enabled",
|
|
pc->pc_apic_id);
|
|
pc->pc_acpi_id = la->la_acpi_id;
|
|
if (bootverbose)
|
|
printf("APIC: CPU %u has ACPI ID %u\n", i,
|
|
la->la_acpi_id);
|
|
}
|
|
}
|
|
SYSINIT(madt_set_ids, SI_SUB_CPU, SI_ORDER_ANY, madt_set_ids, NULL);
|