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/*
* acpi_tables.c - ACPI Boot-Time Table Parsing
*
* Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sched.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/bootmem.h>
#define PREFIX "ACPI: "
#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;
void acpi_table_print_madt_entry(acpi_table_entry_header * header)
{
if (!header)
return;
switch (header->type) {
case ACPI_MADT_LAPIC:
{
struct acpi_table_lapic *p =
(struct acpi_table_lapic *)header;
printk(KERN_INFO PREFIX
"LAPIC (acpi_id[0x%02x] lapic_id[0x%02x] %s)\n",
p->acpi_id, p->id,
p->flags.enabled ? "enabled" : "disabled");
}
break;
case ACPI_MADT_IOAPIC:
{
struct acpi_table_ioapic *p =
(struct acpi_table_ioapic *)header;
printk(KERN_INFO PREFIX
"IOAPIC (id[0x%02x] address[0x%08x] gsi_base[%d])\n",
p->id, p->address, p->global_irq_base);
}
break;
case ACPI_MADT_INT_SRC_OVR:
{
struct acpi_table_int_src_ovr *p =
(struct acpi_table_int_src_ovr *)header;
printk(KERN_INFO PREFIX
"INT_SRC_OVR (bus %d bus_irq %d global_irq %d %s %s)\n",
p->bus, p->bus_irq, p->global_irq,
mps_inti_flags_polarity[p->flags.polarity],
mps_inti_flags_trigger[p->flags.trigger]);
if (p->flags.reserved)
printk(KERN_INFO PREFIX
"INT_SRC_OVR unexpected reserved flags: 0x%x\n",
p->flags.reserved);
}
break;
case ACPI_MADT_NMI_SRC:
{
struct acpi_table_nmi_src *p =
(struct acpi_table_nmi_src *)header;
printk(KERN_INFO PREFIX
"NMI_SRC (%s %s global_irq %d)\n",
mps_inti_flags_polarity[p->flags.polarity],
mps_inti_flags_trigger[p->flags.trigger],
p->global_irq);
}
break;
case ACPI_MADT_LAPIC_NMI:
{
struct acpi_table_lapic_nmi *p =
(struct acpi_table_lapic_nmi *)header;
printk(KERN_INFO PREFIX
"LAPIC_NMI (acpi_id[0x%02x] %s %s lint[0x%x])\n",
p->acpi_id,
mps_inti_flags_polarity[p->flags.polarity],
mps_inti_flags_trigger[p->flags.trigger],
p->lint);
}
break;
case ACPI_MADT_LAPIC_ADDR_OVR:
{
struct acpi_table_lapic_addr_ovr *p =
(struct acpi_table_lapic_addr_ovr *)header;
printk(KERN_INFO PREFIX
"LAPIC_ADDR_OVR (address[%p])\n",
(void *)(unsigned long)p->address);
}
break;
case ACPI_MADT_IOSAPIC:
{
struct acpi_table_iosapic *p =
(struct acpi_table_iosapic *)header;
printk(KERN_INFO PREFIX
"IOSAPIC (id[0x%x] address[%p] gsi_base[%d])\n",
p->id, (void *)(unsigned long)p->address,
p->global_irq_base);
}
break;
case ACPI_MADT_LSAPIC:
{
struct acpi_table_lsapic *p =
(struct acpi_table_lsapic *)header;
printk(KERN_INFO PREFIX
"LSAPIC (acpi_id[0x%02x] lsapic_id[0x%02x] lsapic_eid[0x%02x] %s)\n",
p->acpi_id, p->id, p->eid,
p->flags.enabled ? "enabled" : "disabled");
}
break;
case ACPI_MADT_PLAT_INT_SRC:
{
struct acpi_table_plat_int_src *p =
(struct acpi_table_plat_int_src *)header;
printk(KERN_INFO PREFIX
"PLAT_INT_SRC (%s %s type[0x%x] id[0x%04x] eid[0x%x] iosapic_vector[0x%x] global_irq[0x%x]\n",
mps_inti_flags_polarity[p->flags.polarity],
mps_inti_flags_trigger[p->flags.trigger],
p->type, p->id, p->eid, p->iosapic_vector,
p->global_irq);
}
break;
default:
printk(KERN_WARNING PREFIX
"Found unsupported MADT entry (type = 0x%x)\n",
header->type);
break;
}
}
int __init
acpi_table_parse_madt_family(char *id,
unsigned long madt_size,
int entry_id,
acpi_madt_entry_handler handler,
unsigned int max_entries)
{
struct acpi_table_header *madt = NULL;
acpi_table_entry_header *entry;
unsigned int count = 0;
unsigned long madt_end;
if (!handler)
return -EINVAL;
/* Locate the MADT (if exists). There should only be one. */
acpi_get_table(id, 0, &madt);
if (!madt) {
printk(KERN_WARNING PREFIX "%4.4s not present\n", id);
return -ENODEV;
}
madt_end = (unsigned long)madt + madt->length;
/* Parse all entries looking for a match. */
entry = (acpi_table_entry_header *)
((unsigned long)madt + madt_size);
while (((unsigned long)entry) + sizeof(acpi_table_entry_header) <
madt_end) {
if (entry->type == entry_id
&& (!max_entries || count++ < max_entries))
if (handler(entry, madt_end))
return -EINVAL;
entry = (acpi_table_entry_header *)
((unsigned long)entry + entry->length);
}
if (max_entries && count > max_entries) {
printk(KERN_WARNING PREFIX "[%4.4s:0x%02x] ignored %i entries of "
"%i found\n", id, entry_id, count - max_entries, count);
}
return count;
}
int __init
acpi_table_parse_madt(enum acpi_madt_entry_id id,
acpi_madt_entry_handler handler, unsigned int max_entries)
{
return acpi_table_parse_madt_family("APIC",
sizeof(struct acpi_table_madt), id,
handler, max_entries);
}
int __init acpi_table_parse(char *id, acpi_table_handler handler)
{
struct acpi_table_header *table = NULL;
if (!handler)
return -EINVAL;
acpi_get_table(id, 0, &table);
if (table) {
handler(table);
return 1;
} else
return 0;
}
/*
* acpi_table_init()
*
* find RSDP, find and checksum SDT/XSDT.
* checksum all tables, print SDT/XSDT
*
* result: sdt_entry[] is initialized
*/
int __init acpi_table_init(void)
{
acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);
return 0;
}
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