/* * 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"); } ioapics = malloc(sizeof(*ioapics) * (MAX_APIC_ID + 1), M_MADT, M_WAITOK | M_ZERO); /* 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); free(ioapics, M_MADT); ioapics = NULL; return (0); }
/* * Run through the MP table enumerating CPUs. */ static int madt_probe_cpus(void) { madt = madt_map_table(madt_physaddr, 0, APIC_SIG); KASSERT(madt != NULL, ("Unable to re-map MADT")); madt_walk_table(madt_probe_cpus_handler, NULL); madt_unmap_table(madt); madt = NULL; 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); }
/* * Run through the MP table enumerating I/O APICs. */ static int madt_setup_io(void) { int i; /* 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); /* Third, we register all the I/O APIC's. */ for (i = 0; i < NIOAPICS; 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); }