Merge branch 'x86/apic' into perfcounters/core

7 files changed, 2499 insertions, 2 deletions

diff --git a/arch/x86/kernel/apic/Makefile b/arch/x86/kernel/apic/Makefile
index da20b70..da7b7b9 100644
--- a/arch/x86/kernel/apic/Makefile
+++ b/arch/x86/kernel/apic/Makefile
@@ -2,14 +2,18 @@
 # Makefile for local APIC drivers and for the IO-APIC code
 #
 
-obj-y				:= apic.o ipi.o nmi.o
+obj-$(CONFIG_X86_LOCAL_APIC)	+= apic.o probe_$(BITS).o ipi.o nmi.o
 obj-$(CONFIG_X86_IO_APIC)	+= io_apic.o
 obj-$(CONFIG_SMP)		+= ipi.o
 
 ifeq ($(CONFIG_X86_64),y)
-obj-y				+= apic_64.o apic_flat_64.o
+obj-y				+= apic_flat_64.o
 obj-$(CONFIG_X86_X2APIC)	+= x2apic_cluster.o
 obj-$(CONFIG_X86_X2APIC)	+= x2apic_phys.o
 obj-$(CONFIG_X86_UV)		+= x2apic_uv_x.o
 endif
 
+obj-$(CONFIG_X86_BIGSMP)	+= bigsmp_32.o
+obj-$(CONFIG_X86_NUMAQ)		+= numaq_32.o
+obj-$(CONFIG_X86_ES7000)	+= es7000_32.o
+obj-$(CONFIG_X86_SUMMIT)	+= summit_32.o
diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c
new file mode 100644
index 0000000..0b10933
--- /dev/null
+++ b/arch/x86/kernel/apic/bigsmp_32.c
@@ -0,0 +1,274 @@
+/*
+ * APIC driver for "bigsmp" xAPIC machines with more than 8 virtual CPUs.
+ *
+ * Drives the local APIC in "clustered mode".
+ */
+#include <linux/threads.h>
+#include <linux/cpumask.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/dmi.h>
+#include <linux/smp.h>
+
+#include <asm/apicdef.h>
+#include <asm/fixmap.h>
+#include <asm/mpspec.h>
+#include <asm/apic.h>
+#include <asm/ipi.h>
+
+static inline unsigned bigsmp_get_apic_id(unsigned long x)
+{
+	return (x >> 24) & 0xFF;
+}
+
+static inline int bigsmp_apic_id_registered(void)
+{
+	return 1;
+}
+
+static inline const cpumask_t *bigsmp_target_cpus(void)
+{
+#ifdef CONFIG_SMP
+	return &cpu_online_map;
+#else
+	return &cpumask_of_cpu(0);
+#endif
+}
+
+static inline unsigned long
+bigsmp_check_apicid_used(physid_mask_t bitmap, int apicid)
+{
+	return 0;
+}
+
+static inline unsigned long bigsmp_check_apicid_present(int bit)
+{
+	return 1;
+}
+
+static inline unsigned long calculate_ldr(int cpu)
+{
+	unsigned long val, id;
+
+	val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
+	id = per_cpu(x86_bios_cpu_apicid, cpu);
+	val |= SET_APIC_LOGICAL_ID(id);
+
+	return val;
+}
+
+/*
+ * Set up the logical destination ID.
+ *
+ * Intel recommends to set DFR, LDR and TPR before enabling
+ * an APIC.  See e.g. "AP-388 82489DX User's Manual" (Intel
+ * document number 292116).  So here it goes...
+ */
+static inline void bigsmp_init_apic_ldr(void)
+{
+	unsigned long val;
+	int cpu = smp_processor_id();
+
+	apic_write(APIC_DFR, APIC_DFR_FLAT);
+	val = calculate_ldr(cpu);
+	apic_write(APIC_LDR, val);
+}
+
+static inline void bigsmp_setup_apic_routing(void)
+{
+	printk(KERN_INFO
+		"Enabling APIC mode:  Physflat.  Using %d I/O APICs\n",
+		nr_ioapics);
+}
+
+static inline int bigsmp_apicid_to_node(int logical_apicid)
+{
+	return apicid_2_node[hard_smp_processor_id()];
+}
+
+static inline int bigsmp_cpu_present_to_apicid(int mps_cpu)
+{
+	if (mps_cpu < nr_cpu_ids)
+		return (int) per_cpu(x86_bios_cpu_apicid, mps_cpu);
+
+	return BAD_APICID;
+}
+
+static inline physid_mask_t bigsmp_apicid_to_cpu_present(int phys_apicid)
+{
+	return physid_mask_of_physid(phys_apicid);
+}
+
+/* Mapping from cpu number to logical apicid */
+static inline int bigsmp_cpu_to_logical_apicid(int cpu)
+{
+	if (cpu >= nr_cpu_ids)
+		return BAD_APICID;
+	return cpu_physical_id(cpu);
+}
+
+static inline physid_mask_t bigsmp_ioapic_phys_id_map(physid_mask_t phys_map)
+{
+	/* For clustered we don't have a good way to do this yet - hack */
+	return physids_promote(0xFFL);
+}
+
+static inline void bigsmp_setup_portio_remap(void)
+{
+}
+
+static inline int bigsmp_check_phys_apicid_present(int boot_cpu_physical_apicid)
+{
+	return 1;
+}
+
+/* As we are using single CPU as destination, pick only one CPU here */
+static inline unsigned int bigsmp_cpu_mask_to_apicid(const cpumask_t *cpumask)
+{
+	return bigsmp_cpu_to_logical_apicid(first_cpu(*cpumask));
+}
+
+static inline unsigned int
+bigsmp_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+			      const struct cpumask *andmask)
+{
+	int cpu;
+
+	/*
+	 * We're using fixed IRQ delivery, can only return one phys APIC ID.
+	 * May as well be the first.
+	 */
+	for_each_cpu_and(cpu, cpumask, andmask) {
+		if (cpumask_test_cpu(cpu, cpu_online_mask))
+			break;
+	}
+	if (cpu < nr_cpu_ids)
+		return bigsmp_cpu_to_logical_apicid(cpu);
+
+	return BAD_APICID;
+}
+
+static inline int bigsmp_phys_pkg_id(int cpuid_apic, int index_msb)
+{
+	return cpuid_apic >> index_msb;
+}
+
+static inline void bigsmp_send_IPI_mask(const struct cpumask *mask, int vector)
+{
+	default_send_IPI_mask_sequence_phys(mask, vector);
+}
+
+static inline void bigsmp_send_IPI_allbutself(int vector)
+{
+	default_send_IPI_mask_allbutself_phys(cpu_online_mask, vector);
+}
+
+static inline void bigsmp_send_IPI_all(int vector)
+{
+	bigsmp_send_IPI_mask(cpu_online_mask, vector);
+}
+
+static int dmi_bigsmp; /* can be set by dmi scanners */
+
+static int hp_ht_bigsmp(const struct dmi_system_id *d)
+{
+	printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident);
+	dmi_bigsmp = 1;
+
+	return 0;
+}
+
+
+static const struct dmi_system_id bigsmp_dmi_table[] = {
+	{ hp_ht_bigsmp, "HP ProLiant DL760 G2",
+		{	DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
+			DMI_MATCH(DMI_BIOS_VERSION, "P44-"),
+		}
+	},
+
+	{ hp_ht_bigsmp, "HP ProLiant DL740",
+		{	DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
+			DMI_MATCH(DMI_BIOS_VERSION, "P47-"),
+		}
+	},
+	{ } /* NULL entry stops DMI scanning */
+};
+
+static void bigsmp_vector_allocation_domain(int cpu, cpumask_t *retmask)
+{
+	cpus_clear(*retmask);
+	cpu_set(cpu, *retmask);
+}
+
+static int probe_bigsmp(void)
+{
+	if (def_to_bigsmp)
+		dmi_bigsmp = 1;
+	else
+		dmi_check_system(bigsmp_dmi_table);
+
+	return dmi_bigsmp;
+}
+
+struct apic apic_bigsmp = {
+
+	.name				= "bigsmp",
+	.probe				= probe_bigsmp,
+	.acpi_madt_oem_check		= NULL,
+	.apic_id_registered		= bigsmp_apic_id_registered,
+
+	.irq_delivery_mode		= dest_Fixed,
+	/* phys delivery to target CPU: */
+	.irq_dest_mode			= 0,
+
+	.target_cpus			= bigsmp_target_cpus,
+	.disable_esr			= 1,
+	.dest_logical			= 0,
+	.check_apicid_used		= bigsmp_check_apicid_used,
+	.check_apicid_present		= bigsmp_check_apicid_present,
+
+	.vector_allocation_domain	= bigsmp_vector_allocation_domain,
+	.init_apic_ldr			= bigsmp_init_apic_ldr,
+
+	.ioapic_phys_id_map		= bigsmp_ioapic_phys_id_map,
+	.setup_apic_routing		= bigsmp_setup_apic_routing,
+	.multi_timer_check		= NULL,
+	.apicid_to_node			= bigsmp_apicid_to_node,
+	.cpu_to_logical_apicid		= bigsmp_cpu_to_logical_apicid,
+	.cpu_present_to_apicid		= bigsmp_cpu_present_to_apicid,
+	.apicid_to_cpu_present		= bigsmp_apicid_to_cpu_present,
+	.setup_portio_remap		= NULL,
+	.check_phys_apicid_present	= bigsmp_check_phys_apicid_present,
+	.enable_apic_mode		= NULL,
+	.phys_pkg_id			= bigsmp_phys_pkg_id,
+	.mps_oem_check			= NULL,
+
+	.get_apic_id			= bigsmp_get_apic_id,
+	.set_apic_id			= NULL,
+	.apic_id_mask			= 0xFF << 24,
+
+	.cpu_mask_to_apicid		= bigsmp_cpu_mask_to_apicid,
+	.cpu_mask_to_apicid_and		= bigsmp_cpu_mask_to_apicid_and,
+
+	.send_IPI_mask			= bigsmp_send_IPI_mask,
+	.send_IPI_mask_allbutself	= NULL,
+	.send_IPI_allbutself		= bigsmp_send_IPI_allbutself,
+	.send_IPI_all			= bigsmp_send_IPI_all,
+	.send_IPI_self			= default_send_IPI_self,
+
+	.wakeup_cpu			= NULL,
+	.trampoline_phys_low		= DEFAULT_TRAMPOLINE_PHYS_LOW,
+	.trampoline_phys_high		= DEFAULT_TRAMPOLINE_PHYS_HIGH,
+
+	.wait_for_init_deassert		= default_wait_for_init_deassert,
+
+	.smp_callin_clear_local_apic	= NULL,
+	.inquire_remote_apic		= default_inquire_remote_apic,
+
+	.read				= native_apic_mem_read,
+	.write				= native_apic_mem_write,
+	.icr_read			= native_apic_icr_read,
+	.icr_write			= native_apic_icr_write,
+	.wait_icr_idle			= native_apic_wait_icr_idle,
+	.safe_wait_icr_idle		= native_safe_apic_wait_icr_idle,
+};
diff --git a/arch/x86/kernel/apic/es7000_32.c b/arch/x86/kernel/apic/es7000_32.c
new file mode 100644
index 0000000..320f2d2
--- /dev/null
+++ b/arch/x86/kernel/apic/es7000_32.c
@@ -0,0 +1,757 @@
+/*
+ * Written by: Garry Forsgren, Unisys Corporation
+ *             Natalie Protasevich, Unisys Corporation
+ *
+ * This file contains the code to configure and interface
+ * with Unisys ES7000 series hardware system manager.
+ *
+ * Copyright (c) 2003 Unisys Corporation.
+ * Copyright (C) 2009, Red Hat, Inc., Ingo Molnar
+ *
+ *   All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Unisys Corporation, Township Line & Union Meeting
+ * Roads-A, Unisys Way, Blue Bell, Pennsylvania, 19424, or:
+ *
+ * http://www.unisys.com
+ */
+#include <linux/notifier.h>
+#include <linux/spinlock.h>
+#include <linux/cpumask.h>
+#include <linux/threads.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/reboot.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/acpi.h>
+#include <linux/init.h>
+#include <linux/nmi.h>
+#include <linux/smp.h>
+#include <linux/io.h>
+
+#include <asm/apicdef.h>
+#include <asm/atomic.h>
+#include <asm/fixmap.h>
+#include <asm/mpspec.h>
+#include <asm/setup.h>
+#include <asm/apic.h>
+#include <asm/ipi.h>
+
+/*
+ * ES7000 chipsets
+ */
+
+#define NON_UNISYS			0
+#define ES7000_CLASSIC			1
+#define ES7000_ZORRO			2
+
+#define	MIP_REG				1
+#define	MIP_PSAI_REG			4
+
+#define	MIP_BUSY			1
+#define	MIP_SPIN			0xf0000
+#define	MIP_VALID			0x0100000000000000ULL
+#define	MIP_SW_APIC			0x1020b
+
+#define	MIP_PORT(val)			((val >> 32) & 0xffff)
+
+#define	MIP_RD_LO(val)			(val & 0xffffffff)
+
+struct mip_reg {
+	unsigned long long		off_0x00;
+	unsigned long long		off_0x08;
+	unsigned long long		off_0x10;
+	unsigned long long		off_0x18;
+	unsigned long long		off_0x20;
+	unsigned long long		off_0x28;
+	unsigned long long		off_0x30;
+	unsigned long long		off_0x38;
+};
+
+struct mip_reg_info {
+	unsigned long long		mip_info;
+	unsigned long long		delivery_info;
+	unsigned long long		host_reg;
+	unsigned long long		mip_reg;
+};
+
+struct psai {
+	unsigned long long		entry_type;
+	unsigned long long		addr;
+	unsigned long long		bep_addr;
+};
+
+#ifdef CONFIG_ACPI
+
+struct es7000_oem_table {
+	struct acpi_table_header	Header;
+	u32				OEMTableAddr;
+	u32				OEMTableSize;
+};
+
+static unsigned long			oem_addrX;
+static unsigned long			oem_size;
+
+#endif
+
+/*
+ * ES7000 Globals
+ */
+
+static volatile unsigned long		*psai;
+static struct mip_reg			*mip_reg;
+static struct mip_reg			*host_reg;
+static int 				mip_port;
+static unsigned long			mip_addr;
+static unsigned long			host_addr;
+
+int					es7000_plat;
+
+/*
+ * GSI override for ES7000 platforms.
+ */
+
+static unsigned int			base;
+
+static int
+es7000_rename_gsi(int ioapic, int gsi)
+{
+	if (es7000_plat == ES7000_ZORRO)
+		return gsi;
+
+	if (!base) {
+		int i;
+		for (i = 0; i < nr_ioapics; i++)
+			base += nr_ioapic_registers[i];
+	}
+
+	if (!ioapic && (gsi < 16))
+		gsi += base;
+
+	return gsi;
+}
+
+static int wakeup_secondary_cpu_via_mip(int cpu, unsigned long eip)
+{
+	unsigned long vect = 0, psaival = 0;
+
+	if (psai == NULL)
+		return -1;
+
+	vect = ((unsigned long)__pa(eip)/0x1000) << 16;
+	psaival = (0x1000000 | vect | cpu);
+
+	while (*psai & 0x1000000)
+		;
+
+	*psai = psaival;
+
+	return 0;
+}
+
+static int __init es7000_update_apic(void)
+{
+	apic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
+
+	/* MPENTIUMIII */
+	if (boot_cpu_data.x86 == 6 &&
+	    (boot_cpu_data.x86_model >= 7 || boot_cpu_data.x86_model <= 11)) {
+		es7000_update_apic_to_cluster();
+		apic->wait_for_init_deassert = NULL;
+		apic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
+	}
+
+	return 0;
+}
+
+static void __init setup_unisys(void)
+{
+	/*
+	 * Determine the generation of the ES7000 currently running.
+	 *
+	 * es7000_plat = 1 if the machine is a 5xx ES7000 box
+	 * es7000_plat = 2 if the machine is a x86_64 ES7000 box
+	 *
+	 */
+	if (!(boot_cpu_data.x86 <= 15 && boot_cpu_data.x86_model <= 2))
+		es7000_plat = ES7000_ZORRO;
+	else
+		es7000_plat = ES7000_CLASSIC;
+	ioapic_renumber_irq = es7000_rename_gsi;
+
+	x86_quirks->update_apic = es7000_update_apic;
+}
+
+/*
+ * Parse the OEM Table:
+ */
+static int __init parse_unisys_oem(char *oemptr)
+{
+	int			i;
+	int 			success = 0;
+	unsigned char		type, size;
+	unsigned long		val;
+	char			*tp = NULL;
+	struct psai		*psaip = NULL;
+	struct mip_reg_info 	*mi;
+	struct mip_reg		*host, *mip;
+
+	tp = oemptr;
+
+	tp += 8;
+
+	for (i = 0; i <= 6; i++) {
+		type = *tp++;
+		size = *tp++;
+		tp -= 2;
+		switch (type) {
+		case MIP_REG:
+			mi = (struct mip_reg_info *)tp;
+			val = MIP_RD_LO(mi->host_reg);
+			host_addr = val;
+			host = (struct mip_reg *)val;
+			host_reg = __va(host);
+			val = MIP_RD_LO(mi->mip_reg);
+			mip_port = MIP_PORT(mi->mip_info);
+			mip_addr = val;
+			mip = (struct mip_reg *)val;
+			mip_reg = __va(mip);
+			pr_debug("es7000_mipcfg: host_reg = 0x%lx \n",
+				 (unsigned long)host_reg);
+			pr_debug("es7000_mipcfg: mip_reg = 0x%lx \n",
+				 (unsigned long)mip_reg);
+			success++;
+			break;
+		case MIP_PSAI_REG:
+			psaip = (struct psai *)tp;
+			if (tp != NULL) {
+				if (psaip->addr)
+					psai = __va(psaip->addr);
+				else
+					psai = NULL;
+				success++;
+			}
+			break;
+		default:
+			break;
+		}
+		tp += size;
+	}
+
+	if (success < 2)
+		es7000_plat = NON_UNISYS;
+	else
+		setup_unisys();
+
+	return es7000_plat;
+}
+
+#ifdef CONFIG_ACPI
+static int __init find_unisys_acpi_oem_table(unsigned long *oem_addr)
+{
+	struct acpi_table_header *header = NULL;
+	struct es7000_oem_table *table;
+	acpi_size tbl_size;
+	acpi_status ret;
+	int i = 0;
+
+	for (;;) {
+		ret = acpi_get_table_with_size("OEM1", i++, &header, &tbl_size);
+		if (!ACPI_SUCCESS(ret))
+			return -1;
+
+		if (!memcmp((char *) &header->oem_id, "UNISYS", 6))
+			break;
+
+		early_acpi_os_unmap_memory(header, tbl_size);
+	}
+
+	table = (void *)header;
+
+	oem_addrX	= table->OEMTableAddr;
+	oem_size	= table->OEMTableSize;
+
+	early_acpi_os_unmap_memory(header, tbl_size);
+
+	*oem_addr	= (unsigned long)__acpi_map_table(oem_addrX, oem_size);
+
+	return 0;
+}
+
+static void __init unmap_unisys_acpi_oem_table(unsigned long oem_addr)
+{
+	if (!oem_addr)
+		return;
+
+	__acpi_unmap_table((char *)oem_addr, oem_size);
+}
+
+static int es7000_check_dsdt(void)
+{
+	struct acpi_table_header header;
+
+	if (ACPI_SUCCESS(acpi_get_table_header(ACPI_SIG_DSDT, 0, &header)) &&
+	    !strncmp(header.oem_id, "UNISYS", 6))
+		return 1;
+	return 0;
+}
+
+/* Hook from generic ACPI tables.c */
+static int __init es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+	unsigned long oem_addr = 0;
+	int check_dsdt;
+	int ret = 0;
+
+	/* check dsdt at first to avoid clear fix_map for oem_addr */
+	check_dsdt = es7000_check_dsdt();
+
+	if (!find_unisys_acpi_oem_table(&oem_addr)) {
+		if (check_dsdt) {
+			ret = parse_unisys_oem((char *)oem_addr);
+		} else {
+			setup_unisys();
+			ret = 1;
+		}
+		/*
+		 * we need to unmap it
+		 */
+		unmap_unisys_acpi_oem_table(oem_addr);
+	}
+	return ret;
+}
+#else /* !CONFIG_ACPI: */
+static int __init es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+	return 0;
+}
+#endif /* !CONFIG_ACPI */
+
+static void es7000_spin(int n)
+{
+	int i = 0;
+
+	while (i++ < n)
+		rep_nop();
+}
+
+static int __init
+es7000_mip_write(struct mip_reg *mip_reg)
+{
+	int status = 0;
+	int spin;
+
+	spin = MIP_SPIN;
+	while ((host_reg->off_0x38 & MIP_VALID) != 0) {
+		if (--spin <= 0) {
+			WARN(1,	"Timeout waiting for Host Valid Flag\n");
+			return -1;
+		}
+		es7000_spin(MIP_SPIN);
+	}
+
+	memcpy(host_reg, mip_reg, sizeof(struct mip_reg));
+	outb(1, mip_port);
+
+	spin = MIP_SPIN;
+
+	while ((mip_reg->off_0x38 & MIP_VALID) == 0) {
+		if (--spin <= 0) {
+			WARN(1,	"Timeout waiting for MIP Valid Flag\n");
+			return -1;
+		}
+		es7000_spin(MIP_SPIN);
+	}
+
+	status = (mip_reg->off_0x00 & 0xffff0000000000ULL) >> 48;
+	mip_reg->off_0x38 &= ~MIP_VALID;
+
+	return status;
+}
+
+static void __init es7000_enable_apic_mode(void)
+{
+	struct mip_reg es7000_mip_reg;
+	int mip_status;
+
+	if (!es7000_plat)
+		return;
+
+	printk(KERN_INFO "ES7000: Enabling APIC mode.\n");
+	memset(&es7000_mip_reg, 0, sizeof(struct mip_reg));
+	es7000_mip_reg.off_0x00 = MIP_SW_APIC;
+	es7000_mip_reg.off_0x38 = MIP_VALID;
+
+	while ((mip_status = es7000_mip_write(&es7000_mip_reg)) != 0)
+		WARN(1, "Command failed, status = %x\n", mip_status);
+}
+
+static void es7000_vector_allocation_domain(int cpu, cpumask_t *retmask)
+{
+	/* Careful. Some cpus do not strictly honor the set of cpus
+	 * specified in the interrupt destination when using lowest
+	 * priority interrupt delivery mode.
+	 *
+	 * In particular there was a hyperthreading cpu observed to
+	 * deliver interrupts to the wrong hyperthread when only one
+	 * hyperthread was specified in the interrupt desitination.
+	 */
+	*retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
+}
+
+
+static void es7000_wait_for_init_deassert(atomic_t *deassert)
+{
+#ifndef CONFIG_ES7000_CLUSTERED_APIC
+	while (!atomic_read(deassert))
+		cpu_relax();
+#endif
+	return;
+}
+
+static unsigned int es7000_get_apic_id(unsigned long x)
+{
+	return (x >> 24) & 0xFF;
+}
+
+static void es7000_send_IPI_mask(const struct cpumask *mask, int vector)
+{
+	default_send_IPI_mask_sequence_phys(mask, vector);
+}
+
+static void es7000_send_IPI_allbutself(int vector)
+{
+	default_send_IPI_mask_allbutself_phys(cpu_online_mask, vector);
+}
+
+static void es7000_send_IPI_all(int vector)
+{
+	es7000_send_IPI_mask(cpu_online_mask, vector);
+}
+
+static int es7000_apic_id_registered(void)
+{
+	return 1;
+}
+
+static const cpumask_t *target_cpus_cluster(void)
+{
+	return &CPU_MASK_ALL;
+}
+
+static const cpumask_t *es7000_target_cpus(void)
+{
+	return &cpumask_of_cpu(smp_processor_id());
+}
+
+static unsigned long
+es7000_check_apicid_used(physid_mask_t bitmap, int apicid)
+{
+	return 0;
+}
+static unsigned long es7000_check_apicid_present(int bit)
+{
+	return physid_isset(bit, phys_cpu_present_map);
+}
+
+static unsigned long calculate_ldr(int cpu)
+{
+	unsigned long id = per_cpu(x86_bios_cpu_apicid, cpu);
+
+	return SET_APIC_LOGICAL_ID(id);
+}
+
+/*
+ * Set up the logical destination ID.
+ *
+ * Intel recommends to set DFR, LdR and TPR before enabling
+ * an APIC.  See e.g. "AP-388 82489DX User's Manual" (Intel
+ * document number 292116).  So here it goes...
+ */
+static void es7000_init_apic_ldr_cluster(void)
+{
+	unsigned long val;
+	int cpu = smp_processor_id();
+
+	apic_write(APIC_DFR, APIC_DFR_CLUSTER);
+	val = calculate_ldr(cpu);
+	apic_write(APIC_LDR, val);
+}
+
+static void es7000_init_apic_ldr(void)
+{
+	unsigned long val;
+	int cpu = smp_processor_id();
+
+	apic_write(APIC_DFR, APIC_DFR_FLAT);
+	val = calculate_ldr(cpu);
+	apic_write(APIC_LDR, val);
+}
+
+static void es7000_setup_apic_routing(void)
+{
+	int apic = per_cpu(x86_bios_cpu_apicid, smp_processor_id());
+
+	printk(KERN_INFO
+	  "Enabling APIC mode:  %s. Using %d I/O APICs, target cpus %lx\n",
+		(apic_version[apic] == 0x14) ?
+			"Physical Cluster" : "Logical Cluster",
+		nr_ioapics, cpus_addr(*es7000_target_cpus())[0]);
+}
+
+static int es7000_apicid_to_node(int logical_apicid)
+{
+	return 0;
+}
+
+
+static int es7000_cpu_present_to_apicid(int mps_cpu)
+{
+	if (!mps_cpu)
+		return boot_cpu_physical_apicid;
+	else if (mps_cpu < nr_cpu_ids)
+		return per_cpu(x86_bios_cpu_apicid, mps_cpu);
+	else
+		return BAD_APICID;
+}
+
+static int cpu_id;
+
+static physid_mask_t es7000_apicid_to_cpu_present(int phys_apicid)
+{
+	physid_mask_t mask;
+
+	mask = physid_mask_of_physid(cpu_id);
+	++cpu_id;
+
+	return mask;
+}
+
+/* Mapping from cpu number to logical apicid */
+static int es7000_cpu_to_logical_apicid(int cpu)
+{
+#ifdef CONFIG_SMP
+	if (cpu >= nr_cpu_ids)
+		return BAD_APICID;
+	return cpu_2_logical_apicid[cpu];
+#else
+	return logical_smp_processor_id();
+#endif
+}
+
+static physid_mask_t es7000_ioapic_phys_id_map(physid_mask_t phys_map)
+{
+	/* For clustered we don't have a good way to do this yet - hack */
+	return physids_promote(0xff);
+}
+
+static int es7000_check_phys_apicid_present(int cpu_physical_apicid)
+{
+	boot_cpu_physical_apicid = read_apic_id();
+	return 1;
+}
+
+static unsigned int
+es7000_cpu_mask_to_apicid_cluster(const struct cpumask *cpumask)
+{
+	int cpus_found = 0;
+	int num_bits_set;
+	int apicid;
+	int cpu;
+
+	num_bits_set = cpumask_weight(cpumask);
+	/* Return id to all */
+	if (num_bits_set == nr_cpu_ids)
+		return 0xFF;
+	/*
+	 * The cpus in the mask must all be on the apic cluster.  If are not
+	 * on the same apicid cluster return default value of target_cpus():
+	 */
+	cpu = cpumask_first(cpumask);
+	apicid = es7000_cpu_to_logical_apicid(cpu);
+
+	while (cpus_found < num_bits_set) {
+		if (cpumask_test_cpu(cpu, cpumask)) {
+			int new_apicid = es7000_cpu_to_logical_apicid(cpu);
+
+			if (APIC_CLUSTER(apicid) != APIC_CLUSTER(new_apicid)) {
+				WARN(1, "Not a valid mask!");
+
+				return 0xFF;
+			}
+			apicid = new_apicid;
+			cpus_found++;
+		}
+		cpu++;
+	}
+	return apicid;
+}
+
+static unsigned int es7000_cpu_mask_to_apicid(const cpumask_t *cpumask)
+{
+	int cpus_found = 0;
+	int num_bits_set;
+	int apicid;
+	int cpu;
+
+	num_bits_set = cpus_weight(*cpumask);
+	/* Return id to all */
+	if (num_bits_set == nr_cpu_ids)
+		return es7000_cpu_to_logical_apicid(0);
+	/*
+	 * The cpus in the mask must all be on the apic cluster.  If are not
+	 * on the same apicid cluster return default value of target_cpus():
+	 */
+	cpu = first_cpu(*cpumask);
+	apicid = es7000_cpu_to_logical_apicid(cpu);
+	while (cpus_found < num_bits_set) {
+		if (cpu_isset(cpu, *cpumask)) {
+			int new_apicid = es7000_cpu_to_logical_apicid(cpu);
+
+			if (APIC_CLUSTER(apicid) != APIC_CLUSTER(new_apicid)) {
+				printk("%s: Not a valid mask!\n", __func__);
+
+				return es7000_cpu_to_logical_apicid(0);
+			}
+			apicid = new_apicid;
+			cpus_found++;
+		}
+		cpu++;
+	}
+	return apicid;
+}
+
+static unsigned int
+es7000_cpu_mask_to_apicid_and(const struct cpumask *inmask,
+			      const struct cpumask *andmask)
+{
+	int apicid = es7000_cpu_to_logical_apicid(0);
+	cpumask_var_t cpumask;
+
+	if (!alloc_cpumask_var(&cpumask, GFP_ATOMIC))
+		return apicid;
+
+	cpumask_and(cpumask, inmask, andmask);
+	cpumask_and(cpumask, cpumask, cpu_online_mask);
+	apicid = es7000_cpu_mask_to_apicid(cpumask);
+
+	free_cpumask_var(cpumask);
+
+	return apicid;
+}
+
+static int es7000_phys_pkg_id(int cpuid_apic, int index_msb)
+{
+	return cpuid_apic >> index_msb;
+}
+
+void __init es7000_update_apic_to_cluster(void)
+{
+	apic->target_cpus = target_cpus_cluster;
+	apic->irq_delivery_mode = dest_LowestPrio;
+	/* logical delivery broadcast to all procs: */
+	apic->irq_dest_mode = 1;
+
+	apic->init_apic_ldr = es7000_init_apic_ldr_cluster;
+
+	apic->cpu_mask_to_apicid = es7000_cpu_mask_to_apicid_cluster;
+}
+
+static int probe_es7000(void)
+{
+	/* probed later in mptable/ACPI hooks */
+	return 0;
+}
+
+static __init int
+es7000_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
+{
+	if (mpc->oemptr) {
+		struct mpc_oemtable *oem_table =
+			(struct mpc_oemtable *)mpc->oemptr;
+
+		if (!strncmp(oem, "UNISYS", 6))
+			return parse_unisys_oem((char *)oem_table);
+	}
+	return 0;
+}
+
+
+struct apic apic_es7000 = {
+
+	.name				= "es7000",
+	.probe				= probe_es7000,
+	.acpi_madt_oem_check		= es7000_acpi_madt_oem_check,
+	.apic_id_registered		= es7000_apic_id_registered,
+
+	.irq_delivery_mode		= dest_Fixed,
+	/* phys delivery to target CPUs: */
+	.irq_dest_mode			= 0,
+
+	.target_cpus			= es7000_target_cpus,
+	.disable_esr			= 1,
+	.dest_logical			= 0,
+	.check_apicid_used		= es7000_check_apicid_used,
+	.check_apicid_present		= es7000_check_apicid_present,
+
+	.vector_allocation_domain	= es7000_vector_allocation_domain,
+	.init_apic_ldr			= es7000_init_apic_ldr,
+
+	.ioapic_phys_id_map		= es7000_ioapic_phys_id_map,
+	.setup_apic_routing		= es7000_setup_apic_routing,
+	.multi_timer_check		= NULL,
+	.apicid_to_node			= es7000_apicid_to_node,
+	.cpu_to_logical_apicid		= es7000_cpu_to_logical_apicid,
+	.cpu_present_to_apicid		= es7000_cpu_present_to_apicid,
+	.apicid_to_cpu_present		= es7000_apicid_to_cpu_present,
+	.setup_portio_remap		= NULL,
+	.check_phys_apicid_present	= es7000_check_phys_apicid_present,
+	.enable_apic_mode		= es7000_enable_apic_mode,
+	.phys_pkg_id			= es7000_phys_pkg_id,
+	.mps_oem_check			= es7000_mps_oem_check,
+
+	.get_apic_id			= es7000_get_apic_id,
+	.set_apic_id			= NULL,
+	.apic_id_mask			= 0xFF << 24,
+
+	.cpu_mask_to_apicid		= es7000_cpu_mask_to_apicid,
+	.cpu_mask_to_apicid_and		= es7000_cpu_mask_to_apicid_and,
+
+	.send_IPI_mask			= es7000_send_IPI_mask,
+	.send_IPI_mask_allbutself	= NULL,
+	.send_IPI_allbutself		= es7000_send_IPI_allbutself,
+	.send_IPI_all			= es7000_send_IPI_all,
+	.send_IPI_self			= default_send_IPI_self,
+
+	.wakeup_cpu			= NULL,
+
+	.trampoline_phys_low		= 0x467,
+	.trampoline_phys_high		= 0x469,
+
+	.wait_for_init_deassert		= es7000_wait_for_init_deassert,
+
+	/* Nothing to do for most platforms, since cleared by the INIT cycle: */
+	.smp_callin_clear_local_apic	= NULL,
+	.inquire_remote_apic		= default_inquire_remote_apic,
+
+	.read				= native_apic_mem_read,
+	.write				= native_apic_mem_write,
+	.icr_read			= native_apic_icr_read,
+	.icr_write			= native_apic_icr_write,
+	.wait_icr_idle			= native_apic_wait_icr_idle,
+	.safe_wait_icr_idle		= native_safe_apic_wait_icr_idle,
+};
diff --git a/arch/x86/kernel/apic/numaq_32.c b/arch/x86/kernel/apic/numaq_32.c
new file mode 100644
index 0000000..d9d6d61
--- /dev/null
+++ b/arch/x86/kernel/apic/numaq_32.c
@@ -0,0 +1,565 @@
+/*
+ * Written by: Patricia Gaughen, IBM Corporation
+ *
+ * Copyright (C) 2002, IBM Corp.
+ * Copyright (C) 2009, Red Hat, Inc., Ingo Molnar
+ *
+ * All rights reserved.
+ *
+ * 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, GOOD TITLE or
+ * NON INFRINGEMENT.  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Send feedback to <gone@us.ibm.com>
+ */
+#include <linux/nodemask.h>
+#include <linux/topology.h>
+#include <linux/bootmem.h>
+#include <linux/threads.h>
+#include <linux/cpumask.h>
+#include <linux/kernel.h>
+#include <linux/mmzone.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/numa.h>
+#include <linux/smp.h>
+#include <linux/io.h>
+#include <linux/mm.h>
+
+#include <asm/processor.h>
+#include <asm/fixmap.h>
+#include <asm/mpspec.h>
+#include <asm/numaq.h>
+#include <asm/setup.h>
+#include <asm/apic.h>
+#include <asm/e820.h>
+#include <asm/ipi.h>
+
+#define	MB_TO_PAGES(addr)		((addr) << (20 - PAGE_SHIFT))
+
+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_trans {
+	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;
+};
+
+/* x86_quirks member */
+static int				mpc_record;
+
+static __cpuinitdata struct mpc_trans	*translation_table[MAX_MPC_ENTRY];
+
+int					mp_bus_id_to_node[MAX_MP_BUSSES];
+int					mp_bus_id_to_local[MAX_MP_BUSSES];
+int					quad_local_to_mp_bus_id[NR_CPUS/4][4];
+
+
+static inline void numaq_register_node(int node, struct sys_cfg_data *scd)
+{
+	struct eachquadmem *eq = scd->eq + node;
+
+	node_set_online(node);
+
+	/* Convert to pages */
+	node_start_pfn[node] =
+		 MB_TO_PAGES(eq->hi_shrd_mem_start - eq->priv_mem_size);
+
+	node_end_pfn[node] =
+		 MB_TO_PAGES(eq->hi_shrd_mem_start + eq->hi_shrd_mem_size);
+
+	e820_register_active_regions(node, node_start_pfn[node],
+						node_end_pfn[node]);
+
+	memory_present(node, node_start_pfn[node], node_end_pfn[node]);
+
+	node_remap_size[node] = node_memmap_size_bytes(node,
+					node_start_pfn[node],
+					node_end_pfn[node]);
+}
+
+/*
+ * Function: smp_dump_qct()
+ *
+ * Description: gets memory layout from the quad config table.  This
+ * function also updates node_online_map with the nodes (quads) present.
+ */
+static void __init smp_dump_qct(void)
+{
+	struct sys_cfg_data *scd;
+	int node;
+
+	scd = (void *)__va(SYS_CFG_DATA_PRIV_ADDR);
+
+	nodes_clear(node_online_map);
+	for_each_node(node) {
+		if (scd->quads_present31_0 & (1 << node))
+			numaq_register_node(node, scd);
+	}
+}
+
+void __cpuinit numaq_tsc_disable(void)
+{
+	if (!found_numaq)
+		return;
+
+	if (num_online_nodes() > 1) {
+		printk(KERN_DEBUG "NUMAQ: disabling TSC\n");
+		setup_clear_cpu_cap(X86_FEATURE_TSC);
+	}
+}
+
+static int __init numaq_pre_time_init(void)
+{
+	numaq_tsc_disable();
+	return 0;
+}
+
+static inline int generate_logical_apicid(int quad, int phys_apicid)
+{
+	return (quad << 4) + (phys_apicid ? phys_apicid << 1 : 1);
+}
+
+/* x86_quirks member */
+static int mpc_apic_id(struct mpc_cpu *m)
+{
+	int quad = translation_table[mpc_record]->trans_quad;
+	int logical_apicid = generate_logical_apicid(quad, m->apicid);
+
+	printk(KERN_DEBUG
+		"Processor #%d %u:%u APIC version %d (quad %d, apic %d)\n",
+		 m->apicid, (m->cpufeature & CPU_FAMILY_MASK) >> 8,
+		(m->cpufeature & CPU_MODEL_MASK) >> 4,
+		 m->apicver, quad, logical_apicid);
+
+	return logical_apicid;
+}
+
+/* x86_quirks member */
+static void mpc_oem_bus_info(struct mpc_bus *m, char *name)
+{
+	int quad = translation_table[mpc_record]->trans_quad;
+	int local = translation_table[mpc_record]->trans_local;
+
+	mp_bus_id_to_node[m->busid] = quad;
+	mp_bus_id_to_local[m->busid] = local;
+
+	printk(KERN_INFO "Bus #%d is %s (node %d)\n", m->busid, name, quad);
+}
+
+/* x86_quirks member */
+static void mpc_oem_pci_bus(struct mpc_bus *m)
+{
+	int quad = translation_table[mpc_record]->trans_quad;
+	int local = translation_table[mpc_record]->trans_local;
+
+	quad_local_to_mp_bus_id[quad][local] = m->busid;
+}
+
+static void __init MP_translation_info(struct mpc_trans *m)
+{
+	printk(KERN_INFO
+	    "Translation: record %d, type %d, quad %d, global %d, local %d\n",
+	       mpc_record, m->trans_type, m->trans_quad, m->trans_global,
+	       m->trans_local);
+
+	if (mpc_record >= MAX_MPC_ENTRY)
+		printk(KERN_ERR "MAX_MPC_ENTRY exceeded!\n");
+	else
+		translation_table[mpc_record] = m; /* stash this for later */
+
+	if (m->trans_quad < MAX_NUMNODES && !node_online(m->trans_quad))
+		node_set_online(m->trans_quad);
+}
+
+static int __init mpf_checksum(unsigned char *mp, int len)
+{
+	int sum = 0;
+
+	while (len--)
+		sum += *mp++;
+
+	return sum & 0xFF;
+}
+
+/*
+ * Read/parse the MPC oem tables
+ */
+static void __init
+ smp_read_mpc_oem(struct mpc_oemtable *oemtable, unsigned short oemsize)
+{
+	int count = sizeof(*oemtable);	/* the header size */
+	unsigned char *oemptr = ((unsigned char *)oemtable) + count;
+
+	mpc_record = 0;
+	printk(KERN_INFO
+		"Found an OEM MPC table at %8p - parsing it ... \n", oemtable);
+
+	if (memcmp(oemtable->signature, MPC_OEM_SIGNATURE, 4)) {
+		printk(KERN_WARNING
+		       "SMP mpc oemtable: bad signature [%c%c%c%c]!\n",
+		       oemtable->signature[0], oemtable->signature[1],
+		       oemtable->signature[2], oemtable->signature[3]);
+		return;
+	}
+
+	if (mpf_checksum((unsigned char *)oemtable, oemtable->length)) {
+		printk(KERN_WARNING "SMP oem mptable: checksum error!\n");
+		return;
+	}
+
+	while (count < oemtable->length) {
+		switch (*oemptr) {
+		case MP_TRANSLATION:
+			{
+				struct mpc_trans *m = (void *)oemptr;
+
+				MP_translation_info(m);
+				oemptr += sizeof(*m);
+				count += sizeof(*m);
+				++mpc_record;
+				break;
+			}
+		default:
+			printk(KERN_WARNING
+			       "Unrecognised OEM table entry type! - %d\n",
+			       (int)*oemptr);
+			return;
+		}
+	}
+}
+
+static int __init numaq_setup_ioapic_ids(void)
+{
+	/* so can skip it */
+	return 1;
+}
+
+static int __init numaq_update_apic(void)
+{
+	apic->wakeup_cpu = wakeup_secondary_cpu_via_nmi;
+
+	return 0;
+}
+
+static struct x86_quirks numaq_x86_quirks __initdata = {
+	.arch_pre_time_init		= numaq_pre_time_init,
+	.arch_time_init			= NULL,
+	.arch_pre_intr_init		= NULL,
+	.arch_memory_setup		= NULL,
+	.arch_intr_init			= NULL,
+	.arch_trap_init			= NULL,
+	.mach_get_smp_config		= NULL,
+	.mach_find_smp_config		= NULL,
+	.mpc_record			= &mpc_record,
+	.mpc_apic_id			= mpc_apic_id,
+	.mpc_oem_bus_info		= mpc_oem_bus_info,
+	.mpc_oem_pci_bus		= mpc_oem_pci_bus,
+	.smp_read_mpc_oem		= smp_read_mpc_oem,
+	.setup_ioapic_ids		= numaq_setup_ioapic_ids,
+	.update_apic			= numaq_update_apic,
+};
+
+static __init void early_check_numaq(void)
+{
+	/*
+	 * Find possible boot-time SMP configuration:
+	 */
+	early_find_smp_config();
+
+	/*
+	 * get boot-time SMP configuration:
+	 */
+	if (smp_found_config)
+		early_get_smp_config();
+
+	if (found_numaq)
+		x86_quirks = &numaq_x86_quirks;
+}
+
+int __init get_memcfg_numaq(void)
+{
+	early_check_numaq();
+	if (!found_numaq)
+		return 0;
+	smp_dump_qct();
+
+	return 1;
+}
+
+#define NUMAQ_APIC_DFR_VALUE	(APIC_DFR_CLUSTER)
+
+static inline unsigned int numaq_get_apic_id(unsigned long x)
+{
+	return (x >> 24) & 0x0F;
+}
+
+static inline void numaq_send_IPI_mask(const struct cpumask *mask, int vector)
+{
+	default_send_IPI_mask_sequence_logical(mask, vector);
+}
+
+static inline void numaq_send_IPI_allbutself(int vector)
+{
+	default_send_IPI_mask_allbutself_logical(cpu_online_mask, vector);
+}
+
+static inline void numaq_send_IPI_all(int vector)
+{
+	numaq_send_IPI_mask(cpu_online_mask, vector);
+}
+
+#define NUMAQ_TRAMPOLINE_PHYS_LOW	(0x8)
+#define NUMAQ_TRAMPOLINE_PHYS_HIGH	(0xa)
+
+/*
+ * Because we use NMIs rather than the INIT-STARTUP sequence to
+ * bootstrap the CPUs, the APIC may be in a weird state. Kick it:
+ */
+static inline void numaq_smp_callin_clear_local_apic(void)
+{
+	clear_local_APIC();
+}
+
+static inline const cpumask_t *numaq_target_cpus(void)
+{
+	return &CPU_MASK_ALL;
+}
+
+static inline unsigned long
+numaq_check_apicid_used(physid_mask_t bitmap, int apicid)
+{
+	return physid_isset(apicid, bitmap);
+}
+
+static inline unsigned long numaq_check_apicid_present(int bit)
+{
+	return physid_isset(bit, phys_cpu_present_map);
+}
+
+static inline int numaq_apic_id_registered(void)
+{
+	return 1;
+}
+
+static inline void numaq_init_apic_ldr(void)
+{
+	/* Already done in NUMA-Q firmware */
+}
+
+static inline void numaq_setup_apic_routing(void)
+{
+	printk(KERN_INFO
+		"Enabling APIC mode:  NUMA-Q.  Using %d I/O APICs\n",
+		nr_ioapics);
+}
+
+/*
+ * Skip adding the timer int on secondary nodes, which causes
+ * a small but painful rift in the time-space continuum.
+ */
+static inline int numaq_multi_timer_check(int apic, int irq)
+{
+	return apic != 0 && irq == 0;
+}
+
+static inline physid_mask_t numaq_ioapic_phys_id_map(physid_mask_t phys_map)
+{
+	/* We don't have a good way to do this yet - hack */
+	return physids_promote(0xFUL);
+}
+
+static inline int numaq_cpu_to_logical_apicid(int cpu)
+{
+	if (cpu >= nr_cpu_ids)
+		return BAD_APICID;
+	return cpu_2_logical_apicid[cpu];
+}
+
+/*
+ * Supporting over 60 cpus on NUMA-Q requires a locality-dependent
+ * cpu to APIC ID relation to properly interact with the intelligent
+ * mode of the cluster controller.
+ */
+static inline int numaq_cpu_present_to_apicid(int mps_cpu)
+{
+	if (mps_cpu < 60)
+		return ((mps_cpu >> 2) << 4) | (1 << (mps_cpu & 0x3));
+	else
+		return BAD_APICID;
+}
+
+static inline int numaq_apicid_to_node(int logical_apicid)
+{
+	return logical_apicid >> 4;
+}
+
+static inline physid_mask_t numaq_apicid_to_cpu_present(int logical_apicid)
+{
+	int node = numaq_apicid_to_node(logical_apicid);
+	int cpu = __ffs(logical_apicid & 0xf);
+
+	return physid_mask_of_physid(cpu + 4*node);
+}
+
+/* Where the IO area was mapped on multiquad, always 0 otherwise */
+void *xquad_portio;
+
+static inline int numaq_check_phys_apicid_present(int boot_cpu_physical_apicid)
+{
+	return 1;
+}
+
+/*
+ * We use physical apicids here, not logical, so just return the default
+ * physical broadcast to stop people from breaking us
+ */
+static inline unsigned int numaq_cpu_mask_to_apicid(const cpumask_t *cpumask)
+{
+	return 0x0F;
+}
+
+static inline unsigned int
+numaq_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
+			     const struct cpumask *andmask)
+{
+	return 0x0F;
+}
+
+/* No NUMA-Q box has a HT CPU, but it can't hurt to use the default code. */
+static inline int numaq_phys_pkg_id(int cpuid_apic, int index_msb)
+{
+	return cpuid_apic >> index_msb;
+}
+
+static int
+numaq_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
+{
+	if (strncmp(oem, "IBM NUMA", 8))
+		printk(KERN_ERR "Warning! Not a NUMA-Q system!\n");
+	else
+		found_numaq = 1;
+
+	return found_numaq;
+}
+
+static int probe_numaq(void)
+{
+	/* already know from get_memcfg_numaq() */
+	return found_numaq;
+}
+
+static void numaq_vector_allocation_domain(int cpu, cpumask_t *retmask)
+{
+	/* Careful. Some cpus do not strictly honor the set of cpus
+	 * specified in the interrupt destination when using lowest
+	 * priority interrupt delivery mode.
+	 *
+	 * In particular there was a hyperthreading cpu observed to
+	 * deliver interrupts to the wrong hyperthread when only one
+	 * hyperthread was specified in the interrupt desitination.
+	 */
+	*retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
+}
+
+static void numaq_setup_portio_remap(void)
+{
+	int num_quads = num_online_nodes();
+
+	if (num_quads <= 1)
+		return;
+
+	printk(KERN_INFO
+		"Remapping cross-quad port I/O for %d quads\n", num_quads);
+
+	xquad_portio = ioremap(XQUAD_PORTIO_BASE, num_quads*XQUAD_PORTIO_QUAD);
+
+	printk(KERN_INFO
+		"xquad_portio vaddr 0x%08lx, len %08lx\n",
+		(u_long) xquad_portio, (u_long) num_quads*XQUAD_PORTIO_QUAD);
+}
+
+struct apic apic_numaq = {
+
+	.name				= "NUMAQ",
+	.probe				= probe_numaq,
+	.acpi_madt_oem_check		= NULL,
+	.apic_id_registered		= numaq_apic_id_registered,
+
+	.irq_delivery_mode		= dest_LowestPrio,
+	/* physical delivery on LOCAL quad: */
+	.irq_dest_mode			= 0,
+
+	.target_cpus			= numaq_target_cpus,
+	.disable_esr			= 1,
+	.dest_logical			= APIC_DEST_LOGICAL,
+	.check_apicid_used		= numaq_check_apicid_used,
+	.check_apicid_present		= numaq_check_apicid_present,
+
+	.vector_allocation_domain	= numaq_vector_allocation_domain,
+	.init_apic_ldr			= numaq_init_apic_ldr,
+
+	.ioapic_phys_id_map		= numaq_ioapic_phys_id_map,
+	.setup_apic_routing		= numaq_setup_apic_routing,
+	.multi_timer_check		= numaq_multi_timer_check,
+	.apicid_to_node			= numaq_apicid_to_node,
+	.cpu_to_logical_apicid		= numaq_cpu_to_logical_apicid,
+	.cpu_present_to_apicid		= numaq_cpu_present_to_apicid,
+	.apicid_to_cpu_present		= numaq_apicid_to_cpu_present,
+	.setup_portio_remap		= numaq_setup_portio_remap,
+	.check_phys_apicid_present	= numaq_check_phys_apicid_present,
+	.enable_apic_mode		= NULL,
+	.phys_pkg_id			= numaq_phys_pkg_id,
+	.mps_oem_check			= numaq_mps_oem_check,
+
+	.get_apic_id			= numaq_get_apic_id,
+	.set_apic_id			= NULL,
+	.apic_id_mask			= 0x0F << 24,
+
+	.cpu_mask_to_apicid		= numaq_cpu_mask_to_apicid,
+	.cpu_mask_to_apicid_and		= numaq_cpu_mask_to_apicid_and,
+
+	.send_IPI_mask			= numaq_send_IPI_mask,
+	.send_IPI_mask_allbutself	= NULL,
+	.send_IPI_allbutself		= numaq_send_IPI_allbutself,
+	.send_IPI_all			= numaq_send_IPI_all,
+	.send_IPI_self			= default_send_IPI_self,
+
+	.wakeup_cpu			= NULL,
+	.trampoline_phys_low		= NUMAQ_TRAMPOLINE_PHYS_LOW,
+	.trampoline_phys_high		= NUMAQ_TRAMPOLINE_PHYS_HIGH,
+
+	/* We don't do anything here because we use NMI's to boot instead */
+	.wait_for_init_deassert		= NULL,
+
+	.smp_callin_clear_local_apic	= numaq_smp_callin_clear_local_apic,
+	.inquire_remote_apic		= NULL,
+
+	.read				= native_apic_mem_read,
+	.write				= native_apic_mem_write,
+	.icr_read			= native_apic_icr_read,
+	.icr_write			= native_apic_icr_write,
+	.wait_icr_idle			= native_apic_wait_icr_idle,
+	.safe_wait_icr_idle		= native_safe_apic_wait_icr_idle,
+};
diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c
new file mode 100644
index 0000000..c9ec907
--- /dev/null
+++ b/arch/x86/kernel/apic/probe_32.c
@@ -0,0 +1,296 @@
+/*
+ * Default generic APIC driver. This handles up to 8 CPUs.
+ *
+ * Copyright 2003 Andi Kleen, SuSE Labs.
+ * Subject to the GNU Public License, v.2
+ *
+ * Generic x86 APIC driver probe layer.
+ */
+#include <linux/threads.h>
+#include <linux/cpumask.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/ctype.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <asm/fixmap.h>
+#include <asm/mpspec.h>
+#include <asm/apicdef.h>
+#include <asm/apic.h>
+#include <asm/setup.h>
+
+#include <linux/threads.h>
+#include <linux/cpumask.h>
+#include <asm/mpspec.h>
+#include <asm/fixmap.h>
+#include <asm/apicdef.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/smp.h>
+#include <linux/init.h>
+#include <asm/ipi.h>
+
+#include <linux/smp.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <asm/acpi.h>
+#include <asm/arch_hooks.h>
+#include <asm/e820.h>
+#include <asm/setup.h>
+
+#ifdef CONFIG_HOTPLUG_CPU
+#define DEFAULT_SEND_IPI	(1)
+#else
+#define DEFAULT_SEND_IPI	(0)
+#endif
+
+int no_broadcast = DEFAULT_SEND_IPI;
+
+static __init int no_ipi_broadcast(char *str)
+{
+	get_option(&str, &no_broadcast);
+	pr_info("Using %s mode\n",
+		no_broadcast ? "No IPI Broadcast" : "IPI Broadcast");
+	return 1;
+}
+__setup("no_ipi_broadcast=", no_ipi_broadcast);
+
+static int __init print_ipi_mode(void)
+{
+	pr_info("Using IPI %s mode\n",
+		no_broadcast ? "No-Shortcut" : "Shortcut");
+	return 0;
+}
+late_initcall(print_ipi_mode);
+
+void default_setup_apic_routing(void)
+{
+#ifdef CONFIG_X86_IO_APIC
+	printk(KERN_INFO
+		"Enabling APIC mode:  Flat.  Using %d I/O APICs\n",
+		nr_ioapics);
+#endif
+}
+
+static void default_vector_allocation_domain(int cpu, struct cpumask *retmask)
+{
+	/*
+	 * Careful. Some cpus do not strictly honor the set of cpus
+	 * specified in the interrupt destination when using lowest
+	 * priority interrupt delivery mode.
+	 *
+	 * In particular there was a hyperthreading cpu observed to
+	 * deliver interrupts to the wrong hyperthread when only one
+	 * hyperthread was specified in the interrupt desitination.
+	 */
+	*retmask = (cpumask_t) { { [0] = APIC_ALL_CPUS } };
+}
+
+/* should be called last. */
+static int probe_default(void)
+{
+	return 1;
+}
+
+struct apic apic_default = {
+
+	.name				= "default",
+	.probe				= probe_default,
+	.acpi_madt_oem_check		= NULL,
+	.apic_id_registered		= default_apic_id_registered,
+
+	.irq_delivery_mode		= dest_LowestPrio,
+	/* logical delivery broadcast to all CPUs: */
+	.irq_dest_mode			= 1,
+
+	.target_cpus			= default_target_cpus,
+	.disable_esr			= 0,
+	.dest_logical			= APIC_DEST_LOGICAL,
+	.check_apicid_used		= default_check_apicid_used,
+	.check_apicid_present		= default_check_apicid_present,
+
+	.vector_allocation_domain	= default_vector_allocation_domain,
+	.init_apic_ldr			= default_init_apic_ldr,
+
+	.ioapic_phys_id_map		= default_ioapic_phys_id_map,
+	.setup_apic_routing		= default_setup_apic_routing,
+	.multi_timer_check		= NULL,
+	.apicid_to_node			= default_apicid_to_node,
+	.cpu_to_logical_apicid		= default_cpu_to_logical_apicid,
+	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
+	.apicid_to_cpu_present		= default_apicid_to_cpu_present,
+	.setup_portio_remap		= NULL,
+	.check_phys_apicid_present	= default_check_phys_apicid_present,
+	.enable_apic_mode		= NULL,
+	.phys_pkg_id			= default_phys_pkg_id,
+	.mps_oem_check			= NULL,
+
+	.get_apic_id			= default_get_apic_id,
+	.set_apic_id			= NULL,
+	.apic_id_mask			= 0x0F << 24,
+
+	.cpu_mask_to_apicid		= default_cpu_mask_to_apicid,
+	.cpu_mask_to_apicid_and		= default_cpu_mask_to_apicid_and,
+
+	.send_IPI_mask			= default_send_IPI_mask_logical,
+	.send_IPI_mask_allbutself	= default_send_IPI_mask_allbutself_logical,
+	.send_IPI_allbutself		= default_send_IPI_allbutself,
+	.send_IPI_all			= default_send_IPI_all,
+	.send_IPI_self			= default_send_IPI_self,
+
+	.wakeup_cpu			= NULL,
+	.trampoline_phys_low		= DEFAULT_TRAMPOLINE_PHYS_LOW,
+	.trampoline_phys_high		= DEFAULT_TRAMPOLINE_PHYS_HIGH,
+
+	.wait_for_init_deassert		= default_wait_for_init_deassert,
+
+	.smp_callin_clear_local_apic	= NULL,
+	.inquire_remote_apic		= default_inquire_remote_apic,
+
+	.read				= native_apic_mem_read,
+	.write				= native_apic_mem_write,
+	.icr_read			= native_apic_icr_read,
+	.icr_write			= native_apic_icr_write,
+	.wait_icr_idle			= native_apic_wait_icr_idle,
+	.safe_wait_icr_idle		= native_safe_apic_wait_icr_idle,
+};
+
+extern struct apic apic_numaq;
+extern struct apic apic_summit;
+extern struct apic apic_bigsmp;
+extern struct apic apic_es7000;
+extern struct apic apic_default;
+
+struct apic *apic = &apic_default;
+EXPORT_SYMBOL_GPL(apic);
+
+static struct apic *apic_probe[] __initdata = {
+#ifdef CONFIG_X86_NUMAQ
+	&apic_numaq,
+#endif
+#ifdef CONFIG_X86_SUMMIT
+	&apic_summit,
+#endif
+#ifdef CONFIG_X86_BIGSMP
+	&apic_bigsmp,
+#endif
+#ifdef CONFIG_X86_ES7000
+	&apic_es7000,
+#endif
+	&apic_default,	/* must be last */
+	NULL,
+};
+
+static int cmdline_apic __initdata;
+static int __init parse_apic(char *arg)
+{
+	int i;
+
+	if (!arg)
+		return -EINVAL;
+
+	for (i = 0; apic_probe[i]; i++) {
+		if (!strcmp(apic_probe[i]->name, arg)) {
+			apic = apic_probe[i];
+			cmdline_apic = 1;
+			return 0;
+		}
+	}
+
+	if (x86_quirks->update_apic)
+		x86_quirks->update_apic();
+
+	/* Parsed again by __setup for debug/verbose */
+	return 0;
+}
+early_param("apic", parse_apic);
+
+void __init generic_bigsmp_probe(void)
+{
+#ifdef CONFIG_X86_BIGSMP
+	/*
+	 * This routine is used to switch to bigsmp mode when
+	 * - There is no apic= option specified by the user
+	 * - generic_apic_probe() has chosen apic_default as the sub_arch
+	 * - we find more than 8 CPUs in acpi LAPIC listing with xAPIC support
+	 */
+
+	if (!cmdline_apic && apic == &apic_default) {
+		if (apic_bigsmp.probe()) {
+			apic = &apic_bigsmp;
+			if (x86_quirks->update_apic)
+				x86_quirks->update_apic();
+			printk(KERN_INFO "Overriding APIC driver with %s\n",
+			       apic->name);
+		}
+	}
+#endif
+}
+
+void __init generic_apic_probe(void)
+{
+	if (!cmdline_apic) {
+		int i;
+		for (i = 0; apic_probe[i]; i++) {
+			if (apic_probe[i]->probe()) {
+				apic = apic_probe[i];
+				break;
+			}
+		}
+		/* Not visible without early console */
+		if (!apic_probe[i])
+			panic("Didn't find an APIC driver");
+
+		if (x86_quirks->update_apic)
+			x86_quirks->update_apic();
+	}
+	printk(KERN_INFO "Using APIC driver %s\n", apic->name);
+}
+
+/* These functions can switch the APIC even after the initial ->probe() */
+
+int __init
+generic_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
+{
+	int i;
+
+	for (i = 0; apic_probe[i]; ++i) {
+		if (!apic_probe[i]->mps_oem_check)
+			continue;
+		if (!apic_probe[i]->mps_oem_check(mpc, oem, productid))
+			continue;
+
+		if (!cmdline_apic) {
+			apic = apic_probe[i];
+			if (x86_quirks->update_apic)
+				x86_quirks->update_apic();
+			printk(KERN_INFO "Switched to APIC driver `%s'.\n",
+			       apic->name);
+		}
+		return 1;
+	}
+	return 0;
+}
+
+int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+	int i;
+
+	for (i = 0; apic_probe[i]; ++i) {
+		if (!apic_probe[i]->acpi_madt_oem_check)
+			continue;
+		if (!apic_probe[i]->acpi_madt_oem_check(oem_id, oem_table_id))
+			continue;
+
+		if (!cmdline_apic) {
+			apic = apic_probe[i];
+			if (x86_quirks->update_apic)
+				x86_quirks->update_apic();
+			printk(KERN_INFO "Switched to APIC driver `%s'.\n",
+			       apic->name);
+		}
+		return 1;
+	}
+	return 0;
+}
diff --git a/arch/x86/kernel/apic/apic_64.c b/arch/x86/kernel/apic/probe_64.c
index 70935dd..70935dd 100644
--- a/arch/x86/kernel/apic/apic_64.c
+++ b/arch/x86/kernel/apic/probe_64.c
diff --git a/arch/x86/kernel/apic/summit_32.c b/arch/x86/kernel/apic/summit_32.c
new file mode 100644
index 0000000..cfe7b09
--- /dev/null
+++ b/arch/x86/kernel/apic/summit_32.c
@@ -0,0 +1,601 @@
+/*
+ * IBM Summit-Specific Code
+ *
+ * Written By: Matthew Dobson, IBM Corporation
+ *
+ * Copyright (c) 2003 IBM Corp.
+ *
+ * All rights reserved.
+ *
+ * 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, GOOD TITLE or
+ * NON INFRINGEMENT.  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Send feedback to <colpatch@us.ibm.com>
+ *
+ */
+
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <asm/io.h>
+#include <asm/bios_ebda.h>
+
+/*
+ * APIC driver for the IBM "Summit" chipset.
+ */
+#include <linux/threads.h>
+#include <linux/cpumask.h>
+#include <asm/mpspec.h>
+#include <asm/apic.h>
+#include <asm/smp.h>
+#include <asm/fixmap.h>
+#include <asm/apicdef.h>
+#include <asm/ipi.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/gfp.h>
+#include <linux/smp.h>
+
+static inline unsigned summit_get_apic_id(unsigned long x)
+{
+	return (x >> 24) & 0xFF;
+}
+
+static inline void summit_send_IPI_mask(const cpumask_t *mask, int vector)
+{
+	default_send_IPI_mask_sequence_logical(mask, vector);
+}
+
+static inline void summit_send_IPI_allbutself(int vector)
+{
+	cpumask_t mask = cpu_online_map;
+	cpu_clear(smp_processor_id(), mask);
+
+	if (!cpus_empty(mask))
+		summit_send_IPI_mask(&mask, vector);
+}
+
+static inline void summit_send_IPI_all(int vector)
+{
+	summit_send_IPI_mask(&cpu_online_map, vector);
+}
+
+#include <asm/tsc.h>
+
+extern int use_cyclone;
+
+#ifdef CONFIG_X86_SUMMIT_NUMA
+extern void setup_summit(void);
+#else
+#define setup_summit()	{}
+#endif
+
+static inline int
+summit_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
+{
+	if (!strncmp(oem, "IBM ENSW", 8) &&
+			(!strncmp(productid, "VIGIL SMP", 9)
+			 || !strncmp(productid, "EXA", 3)
+			 || !strncmp(productid, "RUTHLESS SMP", 12))){
+		mark_tsc_unstable("Summit based system");
+		use_cyclone = 1; /*enable cyclone-timer*/
+		setup_summit();
+		return 1;
+	}
+	return 0;
+}
+
+/* Hook from generic ACPI tables.c */
+static inline int summit_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+	if (!strncmp(oem_id, "IBM", 3) &&
+	    (!strncmp(oem_table_id, "SERVIGIL", 8)
+	     || !strncmp(oem_table_id, "EXA", 3))){
+		mark_tsc_unstable("Summit based system");
+		use_cyclone = 1; /*enable cyclone-timer*/
+		setup_summit();
+		return 1;
+	}
+	return 0;
+}
+
+struct rio_table_hdr {
+	unsigned char version;      /* Version number of this data structure           */
+	                            /* Version 3 adds chassis_num & WP_index           */
+	unsigned char num_scal_dev; /* # of Scalability devices (Twisters for Vigil)   */
+	unsigned char num_rio_dev;  /* # of RIO I/O devices (Cyclones and Winnipegs)   */
+} __attribute__((packed));
+
+struct scal_detail {
+	unsigned char node_id;      /* Scalability Node ID                             */
+	unsigned long CBAR;         /* Address of 1MB register space                   */
+	unsigned char port0node;    /* Node ID port connected to: 0xFF=None            */
+	unsigned char port0port;    /* Port num port connected to: 0,1,2, or 0xFF=None */
+	unsigned char port1node;    /* Node ID port connected to: 0xFF = None          */
+	unsigned char port1port;    /* Port num port connected to: 0,1,2, or 0xFF=None */
+	unsigned char port2node;    /* Node ID port connected to: 0xFF = None          */
+	unsigned char port2port;    /* Port num port connected to: 0,1,2, or 0xFF=None */
+	unsigned char chassis_num;  /* 1 based Chassis number (1 = boot node)          */
+} __attribute__((packed));
+
+struct rio_detail {
+	unsigned char node_id;      /* RIO Node ID                                     */
+	unsigned long BBAR;         /* Address of 1MB register space                   */
+	unsigned char type;         /* Type of device                                  */
+	unsigned char owner_id;     /* For WPEG: Node ID of Cyclone that owns this WPEG*/
+	                            /* For CYC:  Node ID of Twister that owns this CYC */
+	unsigned char port0node;    /* Node ID port connected to: 0xFF=None            */
+	unsigned char port0port;    /* Port num port connected to: 0,1,2, or 0xFF=None */
+	unsigned char port1node;    /* Node ID port connected to: 0xFF=None            */
+	unsigned char port1port;    /* Port num port connected to: 0,1,2, or 0xFF=None */
+	unsigned char first_slot;   /* For WPEG: Lowest slot number below this WPEG    */
+	                            /* For CYC:  0                                     */
+	unsigned char status;       /* For WPEG: Bit 0 = 1 : the XAPIC is used         */
+	                            /*                 = 0 : the XAPIC is not used, ie:*/
+	                            /*                     ints fwded to another XAPIC */
+	                            /*           Bits1:7 Reserved                      */
+	                            /* For CYC:  Bits0:7 Reserved                      */
+	unsigned char WP_index;     /* For WPEG: WPEG instance index - lower ones have */
+	                            /*           lower slot numbers/PCI bus numbers    */
+	                            /* For CYC:  No meaning                            */
+	unsigned char chassis_num;  /* 1 based Chassis number                          */
+	                            /* For LookOut WPEGs this field indicates the      */
+	                            /* Expansion Chassis #, enumerated from Boot       */
+	                            /* Node WPEG external port, then Boot Node CYC     */
+	                            /* external port, then Next Vigil chassis WPEG     */
+	                            /* external port, etc.                             */
+	                            /* Shared Lookouts have only 1 chassis number (the */
+	                            /* first one assigned)                             */
+} __attribute__((packed));
+
+
+typedef enum {
+	CompatTwister = 0,  /* Compatibility Twister               */
+	AltTwister    = 1,  /* Alternate Twister of internal 8-way */
+	CompatCyclone = 2,  /* Compatibility Cyclone               */
+	AltCyclone    = 3,  /* Alternate Cyclone of internal 8-way */
+	CompatWPEG    = 4,  /* Compatibility WPEG                  */
+	AltWPEG       = 5,  /* Second Planar WPEG                  */
+	LookOutAWPEG  = 6,  /* LookOut WPEG                        */
+	LookOutBWPEG  = 7,  /* LookOut WPEG                        */
+} node_type;
+
+static inline int is_WPEG(struct rio_detail *rio){
+	return (rio->type == CompatWPEG || rio->type == AltWPEG ||
+		rio->type == LookOutAWPEG || rio->type == LookOutBWPEG);
+}
+
+
+/* In clustered mode, the high nibble of APIC ID is a cluster number.
+ * The low nibble is a 4-bit bitmap. */
+#define XAPIC_DEST_CPUS_SHIFT	4
+#define XAPIC_DEST_CPUS_MASK	((1u << XAPIC_DEST_CPUS_SHIFT) - 1)
+#define XAPIC_DEST_CLUSTER_MASK	(XAPIC_DEST_CPUS_MASK << XAPIC_DEST_CPUS_SHIFT)
+
+#define SUMMIT_APIC_DFR_VALUE	(APIC_DFR_CLUSTER)
+
+static inline const cpumask_t *summit_target_cpus(void)
+{
+	/* CPU_MASK_ALL (0xff) has undefined behaviour with
+	 * dest_LowestPrio mode logical clustered apic interrupt routing
+	 * Just start on cpu 0.  IRQ balancing will spread load
+	 */
+	return &cpumask_of_cpu(0);
+}
+
+static inline unsigned long
+summit_check_apicid_used(physid_mask_t bitmap, int apicid)
+{
+	return 0;
+}
+
+/* we don't use the phys_cpu_present_map to indicate apicid presence */
+static inline unsigned long summit_check_apicid_present(int bit)
+{
+	return 1;
+}
+
+static inline void summit_init_apic_ldr(void)
+{
+	unsigned long val, id;
+	int count = 0;
+	u8 my_id = (u8)hard_smp_processor_id();
+	u8 my_cluster = APIC_CLUSTER(my_id);
+#ifdef CONFIG_SMP
+	u8 lid;
+	int i;
+
+	/* Create logical APIC IDs by counting CPUs already in cluster. */
+	for (count = 0, i = nr_cpu_ids; --i >= 0; ) {
+		lid = cpu_2_logical_apicid[i];
+		if (lid != BAD_APICID && APIC_CLUSTER(lid) == my_cluster)
+			++count;
+	}
+#endif
+	/* We only have a 4 wide bitmap in cluster mode.  If a deranged
+	 * BIOS puts 5 CPUs in one APIC cluster, we're hosed. */
+	BUG_ON(count >= XAPIC_DEST_CPUS_SHIFT);
+	id = my_cluster | (1UL << count);
+	apic_write(APIC_DFR, SUMMIT_APIC_DFR_VALUE);
+	val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
+	val |= SET_APIC_LOGICAL_ID(id);
+	apic_write(APIC_LDR, val);
+}
+
+static inline int summit_apic_id_registered(void)
+{
+	return 1;
+}
+
+static inline void summit_setup_apic_routing(void)
+{
+	printk("Enabling APIC mode:  Summit.  Using %d I/O APICs\n",
+						nr_ioapics);
+}
+
+static inline int summit_apicid_to_node(int logical_apicid)
+{
+#ifdef CONFIG_SMP
+	return apicid_2_node[hard_smp_processor_id()];
+#else
+	return 0;
+#endif
+}
+
+/* Mapping from cpu number to logical apicid */
+static inline int summit_cpu_to_logical_apicid(int cpu)
+{
+#ifdef CONFIG_SMP
+	if (cpu >= nr_cpu_ids)
+		return BAD_APICID;
+	return cpu_2_logical_apicid[cpu];
+#else
+	return logical_smp_processor_id();
+#endif
+}
+
+static inline int summit_cpu_present_to_apicid(int mps_cpu)
+{
+	if (mps_cpu < nr_cpu_ids)
+		return (int)per_cpu(x86_bios_cpu_apicid, mps_cpu);
+	else
+		return BAD_APICID;
+}
+
+static inline physid_mask_t
+summit_ioapic_phys_id_map(physid_mask_t phys_id_map)
+{
+	/* For clustered we don't have a good way to do this yet - hack */
+	return physids_promote(0x0F);
+}
+
+static inline physid_mask_t summit_apicid_to_cpu_present(int apicid)
+{
+	return physid_mask_of_physid(0);
+}
+
+static inline void summit_setup_portio_remap(void)
+{
+}
+
+static inline int summit_check_phys_apicid_present(int boot_cpu_physical_apicid)
+{
+	return 1;
+}
+
+static inline unsigned int summit_cpu_mask_to_apicid(const cpumask_t *cpumask)
+{
+	int cpus_found = 0;
+	int num_bits_set;
+	int apicid;
+	int cpu;
+
+	num_bits_set = cpus_weight(*cpumask);
+	/* Return id to all */
+	if (num_bits_set >= nr_cpu_ids)
+		return 0xFF;
+	/*
+	 * The cpus in the mask must all be on the apic cluster.  If are not
+	 * on the same apicid cluster return default value of target_cpus():
+	 */
+	cpu = first_cpu(*cpumask);
+	apicid = summit_cpu_to_logical_apicid(cpu);
+
+	while (cpus_found < num_bits_set) {
+		if (cpu_isset(cpu, *cpumask)) {
+			int new_apicid = summit_cpu_to_logical_apicid(cpu);
+
+			if (APIC_CLUSTER(apicid) != APIC_CLUSTER(new_apicid)) {
+				printk ("%s: Not a valid mask!\n", __func__);
+
+				return 0xFF;
+			}
+			apicid = apicid | new_apicid;
+			cpus_found++;
+		}
+		cpu++;
+	}
+	return apicid;
+}
+
+static inline unsigned int
+summit_cpu_mask_to_apicid_and(const struct cpumask *inmask,
+			      const struct cpumask *andmask)
+{
+	int apicid = summit_cpu_to_logical_apicid(0);
+	cpumask_var_t cpumask;
+
+	if (!alloc_cpumask_var(&cpumask, GFP_ATOMIC))
+		return apicid;
+
+	cpumask_and(cpumask, inmask, andmask);
+	cpumask_and(cpumask, cpumask, cpu_online_mask);
+	apicid = summit_cpu_mask_to_apicid(cpumask);
+
+	free_cpumask_var(cpumask);
+
+	return apicid;
+}
+
+/*
+ * cpuid returns the value latched in the HW at reset, not the APIC ID
+ * register's value.  For any box whose BIOS changes APIC IDs, like
+ * clustered APIC systems, we must use hard_smp_processor_id.
+ *
+ * See Intel's IA-32 SW Dev's Manual Vol2 under CPUID.
+ */
+static inline int summit_phys_pkg_id(int cpuid_apic, int index_msb)
+{
+	return hard_smp_processor_id() >> index_msb;
+}
+
+static int probe_summit(void)
+{
+	/* probed later in mptable/ACPI hooks */
+	return 0;
+}
+
+static void summit_vector_allocation_domain(int cpu, cpumask_t *retmask)
+{
+	/* Careful. Some cpus do not strictly honor the set of cpus
+	 * specified in the interrupt destination when using lowest
+	 * priority interrupt delivery mode.
+	 *
+	 * In particular there was a hyperthreading cpu observed to
+	 * deliver interrupts to the wrong hyperthread when only one
+	 * hyperthread was specified in the interrupt desitination.
+	 */
+	*retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
+}
+
+#ifdef CONFIG_X86_SUMMIT_NUMA
+static struct rio_table_hdr *rio_table_hdr __initdata;
+static struct scal_detail   *scal_devs[MAX_NUMNODES] __initdata;
+static struct rio_detail    *rio_devs[MAX_NUMNODES*4] __initdata;
+
+#ifndef CONFIG_X86_NUMAQ
+static int mp_bus_id_to_node[MAX_MP_BUSSES] __initdata;
+#endif
+
+static int __init setup_pci_node_map_for_wpeg(int wpeg_num, int last_bus)
+{
+	int twister = 0, node = 0;
+	int i, bus, num_buses;
+
+	for (i = 0; i < rio_table_hdr->num_rio_dev; i++) {
+		if (rio_devs[i]->node_id == rio_devs[wpeg_num]->owner_id) {
+			twister = rio_devs[i]->owner_id;
+			break;
+		}
+	}
+	if (i == rio_table_hdr->num_rio_dev) {
+		printk(KERN_ERR "%s: Couldn't find owner Cyclone for Winnipeg!\n", __func__);
+		return last_bus;
+	}
+
+	for (i = 0; i < rio_table_hdr->num_scal_dev; i++) {
+		if (scal_devs[i]->node_id == twister) {
+			node = scal_devs[i]->node_id;
+			break;
+		}
+	}
+	if (i == rio_table_hdr->num_scal_dev) {
+		printk(KERN_ERR "%s: Couldn't find owner Twister for Cyclone!\n", __func__);
+		return last_bus;
+	}
+
+	switch (rio_devs[wpeg_num]->type) {
+	case CompatWPEG:
+		/*
+		 * The Compatibility Winnipeg controls the 2 legacy buses,
+		 * the 66MHz PCI bus [2 slots] and the 2 "extra" buses in case
+		 * a PCI-PCI bridge card is used in either slot: total 5 buses.
+		 */
+		num_buses = 5;
+		break;
+	case AltWPEG:
+		/*
+		 * The Alternate Winnipeg controls the 2 133MHz buses [1 slot
+		 * each], their 2 "extra" buses, the 100MHz bus [2 slots] and
+		 * the "extra" buses for each of those slots: total 7 buses.
+		 */
+		num_buses = 7;
+		break;
+	case LookOutAWPEG:
+	case LookOutBWPEG:
+		/*
+		 * A Lookout Winnipeg controls 3 100MHz buses [2 slots each]
+		 * & the "extra" buses for each of those slots: total 9 buses.
+		 */
+		num_buses = 9;
+		break;
+	default:
+		printk(KERN_INFO "%s: Unsupported Winnipeg type!\n", __func__);
+		return last_bus;
+	}
+
+	for (bus = last_bus; bus < last_bus + num_buses; bus++)
+		mp_bus_id_to_node[bus] = node;
+	return bus;
+}
+
+static int __init build_detail_arrays(void)
+{
+	unsigned long ptr;
+	int i, scal_detail_size, rio_detail_size;
+
+	if (rio_table_hdr->num_scal_dev > MAX_NUMNODES) {
+		printk(KERN_WARNING "%s: MAX_NUMNODES too low!  Defined as %d, but system has %d nodes.\n", __func__, MAX_NUMNODES, rio_table_hdr->num_scal_dev);
+		return 0;
+	}
+
+	switch (rio_table_hdr->version) {
+	default:
+		printk(KERN_WARNING "%s: Invalid Rio Grande Table Version: %d\n", __func__, rio_table_hdr->version);
+		return 0;
+	case 2:
+		scal_detail_size = 11;
+		rio_detail_size = 13;
+		break;
+	case 3:
+		scal_detail_size = 12;
+		rio_detail_size = 15;
+		break;
+	}
+
+	ptr = (unsigned long)rio_table_hdr + 3;
+	for (i = 0; i < rio_table_hdr->num_scal_dev; i++, ptr += scal_detail_size)
+		scal_devs[i] = (struct scal_detail *)ptr;
+
+	for (i = 0; i < rio_table_hdr->num_rio_dev; i++, ptr += rio_detail_size)
+		rio_devs[i] = (struct rio_detail *)ptr;
+
+	return 1;
+}
+
+void __init setup_summit(void)
+{
+	unsigned long		ptr;
+	unsigned short		offset;
+	int			i, next_wpeg, next_bus = 0;
+
+	/* The pointer to the EBDA is stored in the word @ phys 0x40E(40:0E) */
+	ptr = get_bios_ebda();
+	ptr = (unsigned long)phys_to_virt(ptr);
+
+	rio_table_hdr = NULL;
+	offset = 0x180;
+	while (offset) {
+		/* The block id is stored in the 2nd word */
+		if (*((unsigned short *)(ptr + offset + 2)) == 0x4752) {
+			/* set the pointer past the offset & block id */
+			rio_table_hdr = (struct rio_table_hdr *)(ptr + offset + 4);
+			break;
+		}
+		/* The next offset is stored in the 1st word.  0 means no more */
+		offset = *((unsigned short *)(ptr + offset));
+	}
+	if (!rio_table_hdr) {
+		printk(KERN_ERR "%s: Unable to locate Rio Grande Table in EBDA - bailing!\n", __func__);
+		return;
+	}
+
+	if (!build_detail_arrays())
+		return;
+
+	/* The first Winnipeg we're looking for has an index of 0 */
+	next_wpeg = 0;
+	do {
+		for (i = 0; i < rio_table_hdr->num_rio_dev; i++) {
+			if (is_WPEG(rio_devs[i]) && rio_devs[i]->WP_index == next_wpeg) {
+				/* It's the Winnipeg we're looking for! */
+				next_bus = setup_pci_node_map_for_wpeg(i, next_bus);
+				next_wpeg++;
+				break;
+			}
+		}
+		/*
+		 * If we go through all Rio devices and don't find one with
+		 * the next index, it means we've found all the Winnipegs,
+		 * and thus all the PCI buses.
+		 */
+		if (i == rio_table_hdr->num_rio_dev)
+			next_wpeg = 0;
+	} while (next_wpeg != 0);
+}
+#endif
+
+struct apic apic_summit = {
+
+	.name				= "summit",
+	.probe				= probe_summit,
+	.acpi_madt_oem_check		= summit_acpi_madt_oem_check,
+	.apic_id_registered		= summit_apic_id_registered,
+
+	.irq_delivery_mode		= dest_LowestPrio,
+	/* logical delivery broadcast to all CPUs: */
+	.irq_dest_mode			= 1,
+
+	.target_cpus			= summit_target_cpus,
+	.disable_esr			= 1,
+	.dest_logical			= APIC_DEST_LOGICAL,
+	.check_apicid_used		= summit_check_apicid_used,
+	.check_apicid_present		= summit_check_apicid_present,
+
+	.vector_allocation_domain	= summit_vector_allocation_domain,
+	.init_apic_ldr			= summit_init_apic_ldr,
+
+	.ioapic_phys_id_map		= summit_ioapic_phys_id_map,
+	.setup_apic_routing		= summit_setup_apic_routing,
+	.multi_timer_check		= NULL,
+	.apicid_to_node			= summit_apicid_to_node,
+	.cpu_to_logical_apicid		= summit_cpu_to_logical_apicid,
+	.cpu_present_to_apicid		= summit_cpu_present_to_apicid,
+	.apicid_to_cpu_present		= summit_apicid_to_cpu_present,
+	.setup_portio_remap		= NULL,
+	.check_phys_apicid_present	= summit_check_phys_apicid_present,
+	.enable_apic_mode		= NULL,
+	.phys_pkg_id			= summit_phys_pkg_id,
+	.mps_oem_check			= summit_mps_oem_check,
+
+	.get_apic_id			= summit_get_apic_id,
+	.set_apic_id			= NULL,
+	.apic_id_mask			= 0xFF << 24,
+
+	.cpu_mask_to_apicid		= summit_cpu_mask_to_apicid,
+	.cpu_mask_to_apicid_and		= summit_cpu_mask_to_apicid_and,
+
+	.send_IPI_mask			= summit_send_IPI_mask,
+	.send_IPI_mask_allbutself	= NULL,
+	.send_IPI_allbutself		= summit_send_IPI_allbutself,
+	.send_IPI_all			= summit_send_IPI_all,
+	.send_IPI_self			= default_send_IPI_self,
+
+	.wakeup_cpu			= NULL,
+	.trampoline_phys_low		= DEFAULT_TRAMPOLINE_PHYS_LOW,
+	.trampoline_phys_high		= DEFAULT_TRAMPOLINE_PHYS_HIGH,
+
+	.wait_for_init_deassert		= default_wait_for_init_deassert,
+
+	.smp_callin_clear_local_apic	= NULL,
+	.inquire_remote_apic		= default_inquire_remote_apic,
+
+	.read				= native_apic_mem_read,
+	.write				= native_apic_mem_write,
+	.icr_read			= native_apic_icr_read,
+	.icr_write			= native_apic_icr_write,
+	.wait_icr_idle			= native_apic_wait_icr_idle,
+	.safe_wait_icr_idle		= native_safe_apic_wait_icr_idle,
+};