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Diffstat (limited to 'sys/i386/acpica/madt.c')
| -rw-r--r-- | sys/i386/acpica/madt.c | 572 |
1 files changed, 0 insertions, 572 deletions
diff --git a/sys/i386/acpica/madt.c b/sys/i386/acpica/madt.c deleted file mode 100644 index 13bbb554920e..000000000000 --- a/sys/i386/acpica/madt.c +++ /dev/null @@ -1,572 +0,0 @@ -/*- - * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org> - * 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. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the author nor the names of any co-contributors - * may 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 <sys/param.h> -#include <sys/systm.h> -#include <sys/bus.h> -#include <sys/kernel.h> -#include <sys/malloc.h> -#include <sys/smp.h> -#include <vm/vm.h> -#include <vm/pmap.h> - -#include <x86/apicreg.h> -#include <machine/intr_machdep.h> -#include <machine/apicvar.h> - -#include <contrib/dev/acpica/include/acpi.h> -#include <contrib/dev/acpica/include/actables.h> - -#include <dev/acpica/acpivar.h> -#include <dev/pci/pcivar.h> - -/* These two arrays are indexed by APIC IDs. */ -struct ioapic_info { - void *io_apic; - UINT32 io_vector; -} ioapics[MAX_APIC_ID + 1]; - -struct lapic_info { - u_int la_enabled:1; - u_int la_acpi_id:8; -} lapics[MAX_APIC_ID + 1]; - -static int madt_found_sci_override; -static ACPI_TABLE_MADT *madt; -static vm_paddr_t madt_physaddr; -static vm_offset_t madt_length; - -MALLOC_DEFINE(M_MADT, "madt_table", "ACPI MADT Table Items"); - -static enum intr_polarity interrupt_polarity(UINT16 IntiFlags, UINT8 Source); -static enum intr_trigger interrupt_trigger(UINT16 IntiFlags, UINT8 Source); -static int madt_find_cpu(u_int acpi_id, u_int *apic_id); -static int madt_find_interrupt(int intr, void **apic, u_int *pin); -static void madt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg); -static void madt_parse_interrupt_override( - ACPI_MADT_INTERRUPT_OVERRIDE *intr); -static void madt_parse_ints(ACPI_SUBTABLE_HEADER *entry, - void *arg __unused); -static void madt_parse_local_nmi(ACPI_MADT_LOCAL_APIC_NMI *nmi); -static void madt_parse_nmi(ACPI_MADT_NMI_SOURCE *nmi); -static int madt_probe(void); -static int madt_probe_cpus(void); -static void madt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry, - void *arg __unused); -static void madt_register(void *dummy); -static int madt_setup_local(void); -static int madt_setup_io(void); -static void madt_walk_table(acpi_subtable_handler *handler, void *arg); - -static struct apic_enumerator madt_enumerator = { - "MADT", - madt_probe, - madt_probe_cpus, - madt_setup_local, - madt_setup_io -}; - -/* - * Look for an ACPI Multiple APIC Description Table ("APIC") - */ -static int -madt_probe(void) -{ - - madt_physaddr = acpi_find_table(ACPI_SIG_MADT); - if (madt_physaddr == 0) - return (ENXIO); - return (0); -} - -/* - * Run through the MP table enumerating CPUs. - */ -static int -madt_probe_cpus(void) -{ - - madt = acpi_map_table(madt_physaddr, ACPI_SIG_MADT); - madt_length = madt->Header.Length; - KASSERT(madt != NULL, ("Unable to re-map MADT")); - madt_walk_table(madt_probe_cpus_handler, NULL); - acpi_unmap_table(madt); - madt = NULL; - return (0); -} - -/* - * Initialize the local APIC on the BSP. - */ -static int -madt_setup_local(void) -{ - - madt = pmap_mapbios(madt_physaddr, madt_length); - lapic_init(madt->Address); - printf("ACPI APIC Table: <%.*s %.*s>\n", - (int)sizeof(madt->Header.OemId), madt->Header.OemId, - (int)sizeof(madt->Header.OemTableId), madt->Header.OemTableId); - - /* - * We ignore 64-bit local APIC override entries. Should we - * perhaps emit a warning here if we find one? - */ - return (0); -} - -/* - * Enumerate I/O APICs and setup interrupt sources. - */ -static int -madt_setup_io(void) -{ - void *ioapic; - u_int pin; - int i; - - /* Try to initialize ACPI so that we can access the FADT. */ - i = acpi_Startup(); - if (ACPI_FAILURE(i)) { - printf("MADT: ACPI Startup failed with %s\n", - AcpiFormatException(i)); - printf("Try disabling either ACPI or apic support.\n"); - panic("Using MADT but ACPI doesn't work"); - } - - /* First, we run through adding I/O APIC's. */ - madt_walk_table(madt_parse_apics, NULL); - - /* Second, we run through the table tweaking interrupt sources. */ - madt_walk_table(madt_parse_ints, NULL); - - /* - * If there was not an explicit override entry for the SCI, - * force it to use level trigger and active-low polarity. - */ - if (!madt_found_sci_override) { - if (madt_find_interrupt(AcpiGbl_FADT.SciInterrupt, &ioapic, - &pin) != 0) - printf("MADT: Could not find APIC for SCI IRQ %u\n", - AcpiGbl_FADT.SciInterrupt); - else { - printf( - "MADT: Forcing active-low polarity and level trigger for SCI\n"); - ioapic_set_polarity(ioapic, pin, INTR_POLARITY_LOW); - ioapic_set_triggermode(ioapic, pin, INTR_TRIGGER_LEVEL); - } - } - - /* Third, we register all the I/O APIC's. */ - for (i = 0; i <= MAX_APIC_ID; i++) - if (ioapics[i].io_apic != NULL) - ioapic_register(ioapics[i].io_apic); - - /* Finally, we throw the switch to enable the I/O APIC's. */ - acpi_SetDefaultIntrModel(ACPI_INTR_APIC); - - return (0); -} - -static void -madt_register(void *dummy __unused) -{ - - apic_register_enumerator(&madt_enumerator); -} -SYSINIT(madt_register, SI_SUB_TUNABLES - 1, SI_ORDER_FIRST, madt_register, NULL); - -/* - * Call the handler routine for each entry in the MADT table. - */ -static void -madt_walk_table(acpi_subtable_handler *handler, void *arg) -{ - - acpi_walk_subtables(madt + 1, (char *)madt + madt->Header.Length, - handler, arg); -} - -static void -madt_probe_cpus_handler(ACPI_SUBTABLE_HEADER *entry, void *arg) -{ - ACPI_MADT_LOCAL_APIC *proc; - struct lapic_info *la; - - switch (entry->Type) { - case ACPI_MADT_TYPE_LOCAL_APIC: - /* - * The MADT does not include a BSP flag, so we have to - * let the MP code figure out which CPU is the BSP on - * its own. - */ - proc = (ACPI_MADT_LOCAL_APIC *)entry; - if (bootverbose) - printf("MADT: Found CPU APIC ID %u ACPI ID %u: %s\n", - proc->Id, proc->ProcessorId, - (proc->LapicFlags & ACPI_MADT_ENABLED) ? - "enabled" : "disabled"); - if (!(proc->LapicFlags & ACPI_MADT_ENABLED)) - break; - if (proc->Id > MAX_APIC_ID) - panic("%s: CPU ID %u too high", __func__, proc->Id); - la = &lapics[proc->Id]; - KASSERT(la->la_enabled == 0, - ("Duplicate local APIC ID %u", proc->Id)); - la->la_enabled = 1; - la->la_acpi_id = proc->ProcessorId; - lapic_create(proc->Id, 0); - break; - } -} - - -/* - * Add an I/O APIC from an entry in the table. - */ -static void -madt_parse_apics(ACPI_SUBTABLE_HEADER *entry, void *arg __unused) -{ - ACPI_MADT_IO_APIC *apic; - - switch (entry->Type) { - case ACPI_MADT_TYPE_IO_APIC: - apic = (ACPI_MADT_IO_APIC *)entry; - if (bootverbose) - printf( - "MADT: Found IO APIC ID %u, Interrupt %u at %p\n", - apic->Id, apic->GlobalIrqBase, - (void *)(uintptr_t)apic->Address); - if (apic->Id > MAX_APIC_ID) - panic("%s: I/O APIC ID %u too high", __func__, - apic->Id); - if (ioapics[apic->Id].io_apic != NULL) - panic("%s: Double APIC ID %u", __func__, apic->Id); - if (apic->GlobalIrqBase >= FIRST_MSI_INT) { - printf("MADT: Ignoring bogus I/O APIC ID %u", apic->Id); - break; - } - ioapics[apic->Id].io_apic = ioapic_create(apic->Address, - apic->Id, apic->GlobalIrqBase); - ioapics[apic->Id].io_vector = apic->GlobalIrqBase; - break; - default: - break; - } -} - -/* - * Determine properties of an interrupt source. Note that for ACPI these - * functions are only used for ISA interrupts, so we assume ISA bus values - * (Active Hi, Edge Triggered) for conforming values except for the ACPI - * SCI for which we use Active Lo, Level Triggered. - */ -static enum intr_polarity -interrupt_polarity(UINT16 IntiFlags, UINT8 Source) -{ - - switch (IntiFlags & ACPI_MADT_POLARITY_MASK) { - case ACPI_MADT_POLARITY_CONFORMS: - if (Source == AcpiGbl_FADT.SciInterrupt) - return (INTR_POLARITY_LOW); - else - return (INTR_POLARITY_HIGH); - case ACPI_MADT_POLARITY_ACTIVE_HIGH: - return (INTR_POLARITY_HIGH); - case ACPI_MADT_POLARITY_ACTIVE_LOW: - return (INTR_POLARITY_LOW); - default: - panic("Bogus Interrupt Polarity"); - } -} - -static enum intr_trigger -interrupt_trigger(UINT16 IntiFlags, UINT8 Source) -{ - - switch (IntiFlags & ACPI_MADT_TRIGGER_MASK) { - case ACPI_MADT_TRIGGER_CONFORMS: - if (Source == AcpiGbl_FADT.SciInterrupt) - return (INTR_TRIGGER_LEVEL); - else - return (INTR_TRIGGER_EDGE); - case ACPI_MADT_TRIGGER_EDGE: - return (INTR_TRIGGER_EDGE); - case ACPI_MADT_TRIGGER_LEVEL: - return (INTR_TRIGGER_LEVEL); - default: - panic("Bogus Interrupt Trigger Mode"); - } -} - -/* - * Find the local APIC ID associated with a given ACPI Processor ID. - */ -static int -madt_find_cpu(u_int acpi_id, u_int *apic_id) -{ - int i; - - for (i = 0; i <= MAX_APIC_ID; i++) { - if (!lapics[i].la_enabled) - continue; - if (lapics[i].la_acpi_id != acpi_id) - continue; - *apic_id = i; - return (0); - } - return (ENOENT); -} - -/* - * Find the IO APIC and pin on that APIC associated with a given global - * interrupt. - */ -static int -madt_find_interrupt(int intr, void **apic, u_int *pin) -{ - int i, best; - - best = -1; - for (i = 0; i <= MAX_APIC_ID; i++) { - if (ioapics[i].io_apic == NULL || - ioapics[i].io_vector > intr) - continue; - if (best == -1 || - ioapics[best].io_vector < ioapics[i].io_vector) - best = i; - } - if (best == -1) - return (ENOENT); - *apic = ioapics[best].io_apic; - *pin = intr - ioapics[best].io_vector; - if (*pin > 32) - printf("WARNING: Found intpin of %u for vector %d\n", *pin, - intr); - return (0); -} - -/* - * Parse an interrupt source override for an ISA interrupt. - */ -static void -madt_parse_interrupt_override(ACPI_MADT_INTERRUPT_OVERRIDE *intr) -{ - void *new_ioapic, *old_ioapic; - u_int new_pin, old_pin; - enum intr_trigger trig; - enum intr_polarity pol; - char buf[64]; - - if (acpi_quirks & ACPI_Q_MADT_IRQ0 && intr->SourceIrq == 0 && - intr->GlobalIrq == 2) { - if (bootverbose) - printf("MADT: Skipping timer override\n"); - return; - } - if (bootverbose) - printf("MADT: Interrupt override: source %u, irq %u\n", - intr->SourceIrq, intr->GlobalIrq); - KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero")); - if (madt_find_interrupt(intr->GlobalIrq, &new_ioapic, &new_pin) != 0) { - printf("MADT: Could not find APIC for vector %u (IRQ %u)\n", - intr->GlobalIrq, intr->SourceIrq); - return; - } - - /* - * Lookup the appropriate trigger and polarity modes for this - * entry. - */ - trig = interrupt_trigger(intr->IntiFlags, intr->SourceIrq); - pol = interrupt_polarity(intr->IntiFlags, intr->SourceIrq); - - /* - * If the SCI is identity mapped but has edge trigger and - * active-hi polarity or the force_sci_lo tunable is set, - * force it to use level/lo. - */ - if (intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) { - madt_found_sci_override = 1; - if (getenv_string("hw.acpi.sci.trigger", buf, sizeof(buf))) { - if (tolower(buf[0]) == 'e') - trig = INTR_TRIGGER_EDGE; - else if (tolower(buf[0]) == 'l') - trig = INTR_TRIGGER_LEVEL; - else - panic( - "Invalid trigger %s: must be 'edge' or 'level'", - buf); - printf("MADT: Forcing SCI to %s trigger\n", - trig == INTR_TRIGGER_EDGE ? "edge" : "level"); - } - if (getenv_string("hw.acpi.sci.polarity", buf, sizeof(buf))) { - if (tolower(buf[0]) == 'h') - pol = INTR_POLARITY_HIGH; - else if (tolower(buf[0]) == 'l') - pol = INTR_POLARITY_LOW; - else - panic( - "Invalid polarity %s: must be 'high' or 'low'", - buf); - printf("MADT: Forcing SCI to active %s polarity\n", - pol == INTR_POLARITY_HIGH ? "high" : "low"); - } - } - - /* Remap the IRQ if it is mapped to a different interrupt vector. */ - if (intr->SourceIrq != intr->GlobalIrq) { - /* - * If the SCI is remapped to a non-ISA global interrupt, - * then override the vector we use to setup and allocate - * the interrupt. - */ - if (intr->GlobalIrq > 15 && - intr->SourceIrq == AcpiGbl_FADT.SciInterrupt) - acpi_OverrideInterruptLevel(intr->GlobalIrq); - else - ioapic_remap_vector(new_ioapic, new_pin, - intr->SourceIrq); - if (madt_find_interrupt(intr->SourceIrq, &old_ioapic, - &old_pin) != 0) - printf("MADT: Could not find APIC for source IRQ %u\n", - intr->SourceIrq); - else if (ioapic_get_vector(old_ioapic, old_pin) == - intr->SourceIrq) - ioapic_disable_pin(old_ioapic, old_pin); - } - - /* Program the polarity and trigger mode. */ - ioapic_set_triggermode(new_ioapic, new_pin, trig); - ioapic_set_polarity(new_ioapic, new_pin, pol); -} - -/* - * 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; - CPU_FOREACH(i) { - 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); |