path: root/drivers/acpi/tables.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  acpi_tables.c - ACPI Boot-Time Table Parsing
 *
 *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
 */

/* Uncomment next line to get verbose printout */
/* #define DEBUG */
#define pr_fmt(fmt) "ACPI: " fmt

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/smp.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/irq.h>
#include <linux/errno.h>
#include <linux/acpi.h>
#include <linux/memblock.h>
#include <linux/earlycpio.h>
#include <linux/initrd.h>
#include <linux/security.h>
#include <linux/kmemleak.h>
#include "internal.h"

#ifdef CONFIG_ACPI_CUSTOM_DSDT
#include CONFIG_ACPI_CUSTOM_DSDT_FILE
#endif

#define ACPI_MAX_TABLES		128

static char *mps_inti_flags_polarity[] = { "dfl", "high", "res", "low" };
static char *mps_inti_flags_trigger[] = { "dfl", "edge", "res", "level" };

static struct acpi_table_desc initial_tables[ACPI_MAX_TABLES] __initdata;

static int acpi_apic_instance __initdata_or_acpilib;

enum acpi_subtable_type {
	ACPI_SUBTABLE_COMMON,
	ACPI_SUBTABLE_HMAT,
	ACPI_SUBTABLE_PRMT,
	ACPI_SUBTABLE_CEDT,
};

struct acpi_subtable_entry {
	union acpi_subtable_headers *hdr;
	enum acpi_subtable_type type;
};

/*
 * Disable table checksum verification for the early stage due to the size
 * limitation of the current x86 early mapping implementation.
 */
static bool acpi_verify_table_checksum __initdata_or_acpilib = false;

void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
{
	if (!header)
		return;

	switch (header->type) {

	case ACPI_MADT_TYPE_LOCAL_APIC:
		{
			struct acpi_madt_local_apic *p =
			    (struct acpi_madt_local_apic *)header;
			pr_debug("LAPIC (acpi_id[0x%02x] lapic_id[0x%02x] %s)\n",
				 p->processor_id, p->id,
				 (p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled");
		}
		break;

	case ACPI_MADT_TYPE_LOCAL_X2APIC:
		{
			struct acpi_madt_local_x2apic *p =
			    (struct acpi_madt_local_x2apic *)header;
			pr_debug("X2APIC (apic_id[0x%02x] uid[0x%02x] %s)\n",
				 p->local_apic_id, p->uid,
				 (p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled");
		}
		break;

	case ACPI_MADT_TYPE_IO_APIC:
		{
			struct acpi_madt_io_apic *p =
			    (struct acpi_madt_io_apic *)header;
			pr_debug("IOAPIC (id[0x%02x] address[0x%08x] gsi_base[%d])\n",
				 p->id, p->address, p->global_irq_base);
		}
		break;

	case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE:
		{
			struct acpi_madt_interrupt_override *p =
			    (struct acpi_madt_interrupt_override *)header;
			pr_info("INT_SRC_OVR (bus %d bus_irq %d global_irq %d %s %s)\n",
				p->bus, p->source_irq, p->global_irq,
				mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK],
				mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2]);
			if (p->inti_flags  &
			    ~(ACPI_MADT_POLARITY_MASK | ACPI_MADT_TRIGGER_MASK))
				pr_info("INT_SRC_OVR unexpected reserved flags: 0x%x\n",
					p->inti_flags  &
					~(ACPI_MADT_POLARITY_MASK | ACPI_MADT_TRIGGER_MASK));
		}
		break;

	case ACPI_MADT_TYPE_NMI_SOURCE:
		{
			struct acpi_madt_nmi_source *p =
			    (struct acpi_madt_nmi_source *)header;
			pr_info("NMI_SRC (%s %s global_irq %d)\n",
				mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK],
				mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2],
				p->global_irq);
		}
		break;

	case ACPI_MADT_TYPE_LOCAL_APIC_NMI:
		{
			struct acpi_madt_local_apic_nmi *p =
			    (struct acpi_madt_local_apic_nmi *)header;
			pr_info("LAPIC_NMI (acpi_id[0x%02x] %s %s lint[0x%x])\n",
				p->processor_id,
				mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK	],
				mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2],
				p->lint);
		}
		break;

	case ACPI_MADT_TYPE_LOCAL_X2APIC_NMI:
		{
			u16 polarity, trigger;
			struct acpi_madt_local_x2apic_nmi *p =
			    (struct acpi_madt_local_x2apic_nmi *)header;

			polarity = p->inti_flags & ACPI_MADT_POLARITY_MASK;
			trigger = (p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2;

			pr_info("X2APIC_NMI (uid[0x%02x] %s %s lint[0x%x])\n",
				p->uid,
				mps_inti_flags_polarity[polarity],
				mps_inti_flags_trigger[trigger],
				p->lint);
		}
		break;

	case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE:
		{
			struct acpi_madt_local_apic_override *p =
			    (struct acpi_madt_local_apic_override *)header;
			pr_info("LAPIC_ADDR_OVR (address[0x%llx])\n",
				p->address);
		}
		break;

	case ACPI_MADT_TYPE_IO_SAPIC:
		{
			struct acpi_madt_io_sapic *p =
			    (struct acpi_madt_io_sapic *)header;
			pr_debug("IOSAPIC (id[0x%x] address[%p] gsi_base[%d])\n