path: root/arch/x86/kernel/mpparse.c

/*
 *	Intel Multiprocessor Specification 1.1 and 1.4
 *	compliant MP-table parsing routines.
 *
 *	(c) 1995 Alan Cox, Building #3 <alan@redhat.com>
 *	(c) 1998, 1999, 2000 Ingo Molnar <mingo@redhat.com>
 *      (c) 2008 Alexey Starikovskiy <astarikovskiy@suse.de>
 */

#include <linux/mm.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/bootmem.h>
#include <linux/kernel_stat.h>
#include <linux/mc146818rtc.h>
#include <linux/bitops.h>
#include <linux/acpi.h>
#include <linux/module.h>

#include <asm/smp.h>
#include <asm/mtrr.h>
#include <asm/mpspec.h>
#include <asm/pgalloc.h>
#include <asm/io_apic.h>
#include <asm/proto.h>
#include <asm/acpi.h>
#include <asm/bios_ebda.h>
#include <asm/e820.h>
#include <asm/trampoline.h>

#include <mach_apic.h>
#ifdef CONFIG_X86_32
#include <mach_apicdef.h>
#include <mach_mpparse.h>
#endif

/*
 * Checksum an MP configuration block.
 */

static int __init mpf_checksum(unsigned char *mp, int len)
{
	int sum = 0;

	while (len--)
		sum += *mp++;

	return sum & 0xFF;
}

#ifdef CONFIG_X86_NUMAQ
int found_numaq;
/*
 * Have to match translation table entries to main table entries by counter
 * hence the mpc_record variable .... can't see a less disgusting way of
 * doing this ....
 */
struct mpc_config_translation {
	unsigned char mpc_type;
	unsigned char trans_len;
	unsigned char trans_type;
	unsigned char trans_quad;
	unsigned char trans_global;
	unsigned char trans_local;
	unsigned short trans_reserved;
};


static int mpc_record;
static struct mpc_config_translation *translation_table[MAX_MPC_ENTRY]
    __cpuinitdata;

static inline int generate_logical_apicid(int quad, int phys_apicid)
{
	return (quad << 4) + (phys_apicid ? phys_apicid << 1 : 1);
}


static inline int mpc_apic_id(struct mpc_config_processor *m,
			struct mpc_config_translation *translation_record)
{
	int quad = translation_record->trans_quad;
	int logical_apicid = generate_logical_apicid(quad, m->mpc_apicid);

	printk(KERN_DEBUG "Processor #%d %u:%u APIC version %d (quad %d, apic %d)\n",
	       m->mpc_apicid,
	       (m->mpc_cpufeature & CPU_FAMILY_MASK) >> 8,
	       (m->mpc_cpufeature & CPU_MODEL_MASK) >> 4,
	       m->mpc_apicver, quad, logical_apicid);
	return logical_apicid;
}

int mp_bus_id_to_node[MAX_MP_BUSSES];

int mp_bus_id_to_local[MAX_MP_BUSSES];

static void mpc_oem_bus_info(struct mpc_config_bus *m, char *name,
	struct mpc_config_translation *translation)
{
	int quad = translation->trans_quad;
	int local = translation->trans_local;

	mp_bus_id_to_node[m->mpc_busid] = quad;
	mp_bus_id_to_local[m->mpc_busid] = local;
	printk(KERN_INFO "Bus #%d is %s (node %d)\n",
	       m->mpc_busid, name, quad);
}

int quad_local_to_mp_bus_id [NR_CPUS/4][4];
static