1 files changed, 841 insertions, 0 deletions

diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
new file mode 100644
index 000000000000..a8e99c56a768
--- /dev/null
+++ b/arch/ia64/kernel/acpi.c
@@ -0,0 +1,841 @@
+/*
+ *  acpi.c - Architecture-Specific Low-Level ACPI Support
+ *
+ *  Copyright (C) 1999 VA Linux Systems
+ *  Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com>
+ *  Copyright (C) 2000, 2002-2003 Hewlett-Packard Co.
+ *      David Mosberger-Tang <davidm@hpl.hp.com>
+ *  Copyright (C) 2000 Intel Corp.
+ *  Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
+ *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ *  Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com>
+ *  Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
+ *  Copyright (C) 2002 Erich Focht <efocht@ess.nec.de>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  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/config.h>
+#include <linux/module.h>
+#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/acpi.h>
+#include <linux/efi.h>
+#include <linux/mmzone.h>
+#include <linux/nodemask.h>
+#include <asm/io.h>
+#include <asm/iosapic.h>
+#include <asm/machvec.h>
+#include <asm/page.h>
+#include <asm/system.h>
+#include <asm/numa.h>
+#include <asm/sal.h>
+#include <asm/cyclone.h>
+
+#define BAD_MADT_ENTRY(entry, end) (                                        \
+                (!entry) || (unsigned long)entry + sizeof(*entry) > end ||  \
+                ((acpi_table_entry_header *)entry)->length != sizeof(*entry))
+
+#define PREFIX                  "ACPI: "
+
+void (*pm_idle) (void);
+EXPORT_SYMBOL(pm_idle);
+void (*pm_power_off) (void);
+EXPORT_SYMBOL(pm_power_off);
+
+unsigned char acpi_kbd_controller_present = 1;
+unsigned char acpi_legacy_devices;
+
+#define MAX_SAPICS 256
+u16 ia64_acpiid_to_sapicid[MAX_SAPICS] =
+        { [0 ... MAX_SAPICS - 1] = -1 };
+EXPORT_SYMBOL(ia64_acpiid_to_sapicid);
+
+const char *
+acpi_get_sysname (void)
+{
+#ifdef CONFIG_IA64_GENERIC
+        unsigned long rsdp_phys;
+        struct acpi20_table_rsdp *rsdp;
+        struct acpi_table_xsdt *xsdt;
+        struct acpi_table_header *hdr;
+
+        rsdp_phys = acpi_find_rsdp();
+        if (!rsdp_phys) {
+                printk(KERN_ERR "ACPI 2.0 RSDP not found, default to \"dig\"\n");
+                return "dig";
+        }
+
+        rsdp = (struct acpi20_table_rsdp *) __va(rsdp_phys);
+        if (strncmp(rsdp->signature, RSDP_SIG, sizeof(RSDP_SIG) - 1)) {
+                printk(KERN_ERR "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
+                return "dig";
+        }
+
+        xsdt = (struct acpi_table_xsdt *) __va(rsdp->xsdt_address);
+        hdr = &xsdt->header;
+        if (strncmp(hdr->signature, XSDT_SIG, sizeof(XSDT_SIG) - 1)) {
+                printk(KERN_ERR "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
+                return "dig";
+        }
+
+        if (!strcmp(hdr->oem_id, "HP")) {
+                return "hpzx1";
+        }
+        else if (!strcmp(hdr->oem_id, "SGI")) {
+                return "sn2";
+        }
+
+        return "dig";
+#else
+# if defined (CONFIG_IA64_HP_SIM)
+        return "hpsim";
+# elif defined (CONFIG_IA64_HP_ZX1)
+        return "hpzx1";
+# elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
+        return "hpzx1_swiotlb";
+# elif defined (CONFIG_IA64_SGI_SN2)
+        return "sn2";
+# elif defined (CONFIG_IA64_DIG)
+        return "dig";
+# else
+#       error Unknown platform.  Fix acpi.c.
+# endif
+#endif
+}
+
+#ifdef CONFIG_ACPI_BOOT
+
+#define ACPI_MAX_PLATFORM_INTERRUPTS    256
+
+/* Array to record platform interrupt vectors for generic interrupt routing. */
+int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = {
+        [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
+};
+
+enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
+
+/*
+ * Interrupt routing API for device drivers.  Provides interrupt vector for
+ * a generic platform event.  Currently only CPEI is implemented.
+ */
+int
+acpi_request_vector (u32 int_type)
+{
+        int vector = -1;
+
+        if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) {
+                /* corrected platform error interrupt */
+                vector = platform_intr_list[int_type];
+        } else
+                printk(KERN_ERR "acpi_request_vector(): invalid interrupt type\n");
+        return vector;
+}
+
+char *
+__acpi_map_table (unsigned long phys_addr, unsigned long size)
+{
+        return __va(phys_addr);
+}
+
+/* --------------------------------------------------------------------------
+                            Boot-time Table Parsing
+   -------------------------------------------------------------------------- */
+
+static int                      total_cpus __initdata;
+static int                      available_cpus __initdata;
+struct acpi_table_madt *        acpi_madt __initdata;
+static u8                       has_8259;
+
+
+static int __init
+acpi_parse_lapic_addr_ovr (
+        acpi_table_entry_header *header, const unsigned long end)
+{
+        struct acpi_table_lapic_addr_ovr *lapic;
+
+        lapic = (struct acpi_table_lapic_addr_ovr *) header;
+
+        if (BAD_MADT_ENTRY(lapic, end))
+                return -EINVAL;
+
+        if (lapic->address) {
+                iounmap(ipi_base_addr);
+                ipi_base_addr = ioremap(lapic->address, 0);
+        }
+        return 0;
+}
+
+
+static int __init
+acpi_parse_lsapic (acpi_table_entry_header *header, const unsigned long end)
+{
+        struct acpi_table_lsapic *lsapic;
+
+        lsapic = (struct acpi_table_lsapic *) header;
+
+        if (BAD_MADT_ENTRY(lsapic, end))
+                return -EINVAL;
+
+        if (lsapic->flags.enabled) {
+#ifdef CONFIG_SMP
+                smp_boot_data.cpu_phys_id[available_cpus] = (lsapic->id << 8) | lsapic->eid;
+#endif
+                ia64_acpiid_to_sapicid[lsapic->acpi_id] = (lsapic->id << 8) | lsapic->eid;
+                ++available_cpus;
+        }
+
+        total_cpus++;
+        return 0;
+}
+
+
+static int __init
+acpi_parse_lapic_nmi (acpi_table_entry_header *header, const unsigned long end)
+{
+        struct acpi_table_lapic_nmi *lacpi_nmi;
+
+        lacpi_nmi = (struct acpi_table_lapic_nmi*) header;
+
+        if (BAD_MADT_ENTRY(lacpi_nmi, end))
+                return -EINVAL;
+
+        /* TBD: Support lapic_nmi entries */
+        return 0;
+}
+
+
+static int __init
+acpi_parse_iosapic (acpi_table_entry_header *header, const unsigned long end)
+{
+        struct acpi_table_iosapic *iosapic;
+
+        iosapic = (struct acpi_table_iosapic *) header;
+
+        if (BAD_MADT_ENTRY(iosapic, end))
+                return -EINVAL;
+
+        iosapic_init(iosapic->address, iosapic->global_irq_base);
+
+        return 0;
+}
+
+
+static int __init
+acpi_parse_plat_int_src (
+        acpi_table_entry_header *header, const unsigned long end)
+{
+        struct acpi_table_plat_int_src *plintsrc;
+        int vector;
+
+        plintsrc = (struct acpi_table_plat_int_src *) header;
+
+        if (BAD_MADT_ENTRY(plintsrc, end))
+                return -EINVAL;
+
+        /*
+         * Get vector assignment for this interrupt, set attributes,
+         * and program the IOSAPIC routing table.
+         */
+        vector = iosapic_register_platform_intr(plintsrc->type,
+                                                plintsrc->global_irq,
+                                                plintsrc->iosapic_vector,
+                                                plintsrc->eid,
+                                                plintsrc->id,
+                                                (plintsrc->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
+                                                (plintsrc->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
+
+        platform_intr_list[plintsrc->type] = vector;
+        return 0;
+}
+
+
+static int __init
+acpi_parse_int_src_ovr (
+        acpi_table_entry_header *header, const unsigned long end)
+{
+        struct acpi_table_int_src_ovr *p;
+
+        p = (struct acpi_table_int_src_ovr *) header;
+
+        if (BAD_MADT_ENTRY(p, end))
+                return -EINVAL;
+
+        iosapic_override_isa_irq(p->bus_irq, p->global_irq,
+                                 (p->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
+                                 (p->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
+        return 0;
+}
+
+
+static int __init
+acpi_parse_nmi_src (acpi_table_entry_header *header, const unsigned long end)
+{
+        struct acpi_table_nmi_src *nmi_src;
+
+        nmi_src = (struct acpi_table_nmi_src*) header;
+
+        if (BAD_MADT_ENTRY(nmi_src, end))
+                return -EINVAL;
+
+        /* TBD: Support nimsrc entries */
+        return 0;
+}
+
+static void __init
+acpi_madt_oem_check (char *oem_id, char *oem_table_id)
+{
+        if (!strncmp(oem_id, "IBM", 3) &&
+            (!strncmp(oem_table_id, "SERMOW", 6))) {
+
+                /*
+                 * Unfortunately ITC_DRIFT is not yet part of the
+                 * official SAL spec, so the ITC_DRIFT bit is not
+                 * set by the BIOS on this hardware.
+                 */
+                sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT;
+
+                cyclone_setup();
+        }
+}
+
+static int __init
+acpi_parse_madt (unsigned long phys_addr, unsigned long size)
+{
+        if (!phys_addr || !size)
+                return -EINVAL;
+
+        acpi_madt = (struct acpi_table_madt *) __va(phys_addr);
+
+        /* remember the value for reference after free_initmem() */
+#ifdef CONFIG_ITANIUM
+        has_8259 = 1; /* Firmware on old Itanium systems is broken */
+#else
+        has_8259 = acpi_madt->flags.pcat_compat;
+#endif
+        iosapic_system_init(has_8259);
+
+        /* Get base address of IPI Message Block */
+
+        if (acpi_madt->lapic_address)
+                ipi_base_addr = ioremap(acpi_madt->lapic_address, 0);
+
+        printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr);
+
+        acpi_madt_oem_check(acpi_madt->header.oem_id,
+                acpi_madt->header.oem_table_id);
+
+        return 0;
+}
+
+
+#ifdef CONFIG_ACPI_NUMA
+
+#undef SLIT_DEBUG
+
+#define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
+
+static int __initdata srat_num_cpus;                    /* number of cpus */
+static u32 __devinitdata pxm_flag[PXM_FLAG_LEN];
+#define pxm_bit_set(bit)        (set_bit(bit,(void *)pxm_flag))
+#define pxm_bit_test(bit)       (test_bit(bit,(void *)pxm_flag))
+/* maps to convert between proximity domain and logical node ID */
+int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS];
+int __initdata nid_to_pxm_map[MAX_NUMNODES];
+static struct acpi_table_slit __initdata *slit_table;
+
+/*
+ * ACPI 2.0 SLIT (System Locality Information Table)
+ * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
+ */
+void __init
+acpi_numa_slit_init (struct acpi_table_slit *slit)
+{
+        u32 len;
+
+        len = sizeof(struct acpi_table_header) + 8
+                + slit->localities * slit->localities;
+        if (slit->header.length != len) {
+                printk(KERN_ERR "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
+                       len, slit->header.length);
+                memset(numa_slit, 10, sizeof(numa_slit));
+                return;
+        }
+        slit_table = slit;
+}
+
+void __init
+acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa)
+{
+        /* record this node in proximity bitmap */
+        pxm_bit_set(pa->proximity_domain);
+
+        node_cpuid[srat_num_cpus].phys_id = (pa->apic_id << 8) | (pa->lsapic_eid);
+        /* nid should be overridden as logical node id later */
+        node_cpuid[srat_num_cpus].nid = pa->proximity_domain;
+        srat_num_cpus++;
+}
+
+void __init
+acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma)
+{
+        unsigned long paddr, size;
+        u8 pxm;
+        struct node_memblk_s *p, *q, *pend;
+
+        pxm = ma->proximity_domain;
+
+        /* fill node memory chunk structure */
+        paddr = ma->base_addr_hi;
+        paddr = (paddr << 32) | ma->base_addr_lo;
+        size = ma->length_hi;
+        size = (size << 32) | ma->length_lo;
+
+        /* Ignore disabled entries */
+        if (!ma->flags.enabled)
+                return;
+
+        /* record this node in proximity bitmap */
+        pxm_bit_set(pxm);
+
+        /* Insertion sort based on base address */
+        pend = &node_memblk[num_node_memblks];
+        for (p = &node_memblk[0]; p < pend; p++) {
+                if (paddr < p->start_paddr)
+                        break;
+        }
+        if (p < pend) {
+                for (q = pend - 1; q >= p; q--)
+                        *(q + 1) = *q;
+        }
+        p->start_paddr = paddr;
+        p->size = size;
+        p->nid = pxm;
+        num_node_memblks++;
+}
+
+void __init
+acpi_numa_arch_fixup (void)
+{
+        int i, j, node_from, node_to;
+
+        /* If there's no SRAT, fix the phys_id and mark node 0 online */
+        if (srat_num_cpus == 0) {
+                node_set_online(0);
+                node_cpuid[0].phys_id = hard_smp_processor_id();
+                return;
+        }
+
+        /*
+         * MCD - This can probably be dropped now.  No need for pxm ID to node ID
+         * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
+         */
+        /* calculate total number of nodes in system from PXM bitmap */
+        memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map));
+        memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map));
+        nodes_clear(node_online_map);
+        for (i = 0; i < MAX_PXM_DOMAINS; i++) {
+                if (pxm_bit_test(i)) {
+                        int nid = num_online_nodes();
+                        pxm_to_nid_map[i] = nid;
+                        nid_to_pxm_map[nid] = i;
+                        node_set_online(nid);
+                }
+        }
+
+        /* set logical node id in memory chunk structure */
+        for (i = 0; i < num_node_memblks; i++)
+                node_memblk[i].nid = pxm_to_nid_map[node_memblk[i].nid];
+
+        /* assign memory bank numbers for each chunk on each node */
+        for_each_online_node(i) {
+                int bank;
+
+                bank = 0;
+                for (j = 0; j < num_node_memblks; j++)
+                        if (node_memblk[j].nid == i)
+                                node_memblk[j].bank = bank++;
+        }
+
+        /* set logical node id in cpu structure */
+        for (i = 0; i < srat_num_cpus; i++)
+                node_cpuid[i].nid = pxm_to_nid_map[node_cpuid[i].nid];
+
+        printk(KERN_INFO "Number of logical nodes in system = %d\n", num_online_nodes());
+        printk(KERN_INFO "Number of memory chunks in system = %d\n", num_node_memblks);
+
+        if (!slit_table) return;
+        memset(numa_slit, -1, sizeof(numa_slit));
+        for (i=0; i<slit_table->localities; i++) {
+                if (!pxm_bit_test(i))
+                        continue;
+                node_from = pxm_to_nid_map[i];
+                for (j=0; j<slit_table->localities; j++) {
+                        if (!pxm_bit_test(j))
+                                continue;
+                        node_to = pxm_to_nid_map[j];
+                        node_distance(node_from, node_to) =
+                                slit_table->entry[i*slit_table->localities + j];
+                }
+        }
+
+#ifdef SLIT_DEBUG
+        printk("ACPI 2.0 SLIT locality table:\n");
+        for_each_online_node(i) {
+                for_each_online_node(j)
+                        printk("%03d ", node_distance(i,j));
+                printk("\n");
+        }
+#endif
+}
+#endif /* CONFIG_ACPI_NUMA */
+
+unsigned int
+acpi_register_gsi (u32 gsi, int edge_level, int active_high_low)
+{
+        if (has_8259 && gsi < 16)
+                return isa_irq_to_vector(gsi);
+
+        return iosapic_register_intr(gsi,
+                        (active_high_low == ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
+                        (edge_level == ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
+}
+EXPORT_SYMBOL(acpi_register_gsi);
+
+#ifdef CONFIG_ACPI_DEALLOCATE_IRQ
+void
+acpi_unregister_gsi (u32 gsi)
+{
+        iosapic_unregister_intr(gsi);
+}
+EXPORT_SYMBOL(acpi_unregister_gsi);
+#endif /* CONFIG_ACPI_DEALLOCATE_IRQ */
+
+static int __init
+acpi_parse_fadt (unsigned long phys_addr, unsigned long size)
+{
+        struct acpi_table_header *fadt_header;
+        struct fadt_descriptor_rev2 *fadt;
+
+        if (!phys_addr || !size)
+                return -EINVAL;
+
+        fadt_header = (struct acpi_table_header *) __va(phys_addr);
+        if (fadt_header->revision != 3)
+                return -ENODEV;         /* Only deal with ACPI 2.0 FADT */
+
+        fadt = (struct fadt_descriptor_rev2 *) fadt_header;
+
+        if (!(fadt->iapc_boot_arch & BAF_8042_KEYBOARD_CONTROLLER))
+                acpi_kbd_controller_present = 0;
+
+        if (fadt->iapc_boot_arch & BAF_LEGACY_DEVICES)
+                acpi_legacy_devices = 1;
+
+        acpi_register_gsi(fadt->sci_int, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW);
+        return 0;
+}
+
+
+unsigned long __init
+acpi_find_rsdp (void)
+{
+        unsigned long rsdp_phys = 0;
+
+        if (efi.acpi20)
+                rsdp_phys = __pa(efi.acpi20);
+        else if (efi.acpi)
+                printk(KERN_WARNING PREFIX "v1.0/r0.71 tables no longer supported\n");
+        return rsdp_phys;
+}
+
+
+int __init
+acpi_boot_init (void)
+{
+
+        /*
+         * MADT
+         * ----
+         * Parse the Multiple APIC Description Table (MADT), if exists.
+         * Note that this table provides platform SMP configuration
+         * information -- the successor to MPS tables.
+         */
+
+        if (acpi_table_parse(ACPI_APIC, acpi_parse_madt) < 1) {
+                printk(KERN_ERR PREFIX "Can't find MADT\n");
+                goto skip_madt;
+        }
+
+        /* Local APIC */
+
+        if (acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr, 0) < 0)
+                printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n");
+
+        if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic, NR_CPUS) < 1)
+                printk(KERN_ERR PREFIX "Error parsing MADT - no LAPIC entries\n");
+
+        if (acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0) < 0)
+                printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
+
+        /* I/O APIC */
+
+        if (acpi_table_parse_madt(ACPI_MADT_IOSAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1)
+                printk(KERN_ERR PREFIX "Error parsing MADT - no IOSAPIC entries\n");
+
+        /* System-Level Interrupt Routing */
+
+        if (acpi_table_parse_madt(ACPI_MADT_PLAT_INT_SRC, acpi_parse_plat_int_src, ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
+                printk(KERN_ERR PREFIX "Error parsing platform interrupt source entry\n");
+
+        if (acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr, 0) < 0)
+                printk(KERN_ERR PREFIX "Error parsing interrupt source overrides entry\n");
+
+        if (acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src, 0) < 0)
+                printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
+  skip_madt:
+
+        /*
+         * FADT says whether a legacy keyboard controller is present.
+         * The FADT also contains an SCI_INT line, by which the system
+         * gets interrupts such as power and sleep buttons.  If it's not
+         * on a Legacy interrupt, it needs to be setup.
+         */
+        if (acpi_table_parse(ACPI_FADT, acpi_parse_fadt) < 1)
+                printk(KERN_ERR PREFIX "Can't find FADT\n");
+
+#ifdef CONFIG_SMP
+        if (available_cpus == 0) {
+                printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
+                printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
+                smp_boot_data.cpu_phys_id[available_cpus] = hard_smp_processor_id();
+                available_cpus = 1; /* We've got at least one of these, no? */
+        }
+        smp_boot_data.cpu_count = available_cpus;
+
+        smp_build_cpu_map();
+# ifdef CONFIG_ACPI_NUMA
+        if (srat_num_cpus == 0) {
+                int cpu, i = 1;
+                for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
+                        if (smp_boot_data.cpu_phys_id[cpu] != hard_smp_processor_id())
+                                node_cpuid[i++].phys_id = smp_boot_data.cpu_phys_id[cpu];
+        }
+        build_cpu_to_node_map();
+# endif
+#endif
+        /* Make boot-up look pretty */
+        printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, total_cpus);
+        return 0;
+}
+
+int
+acpi_gsi_to_irq (u32 gsi, unsigned int *irq)
+{
+        int vector;
+
+        if (has_8259 && gsi < 16)
+                *irq = isa_irq_to_vector(gsi);
+        else {
+                vector = gsi_to_vector(gsi);
+                if (vector == -1)
+                        return -1;
+
+                *irq = vector;
+        }
+        return 0;
+}
+
+/*
+ *  ACPI based hotplug CPU support
+ */
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+static
+int
+acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
+{
+#ifdef CONFIG_ACPI_NUMA
+        int                     pxm_id;
+
+        pxm_id = acpi_get_pxm(handle);
+
+        /*
+         * Assuming that the container driver would have set the proximity
+         * domain and would have initialized pxm_to_nid_map[pxm_id] && pxm_flag
+         */
+        node_cpuid[cpu].nid = (pxm_id < 0) ? 0:
+                        pxm_to_nid_map[pxm_id];
+
+        node_cpuid[cpu].phys_id =  physid;
+#endif
+        return(0);
+}
+
+
+int
+acpi_map_lsapic(acpi_handle handle, int *pcpu)
+{
+        struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+        union acpi_object *obj;
+        struct acpi_table_lsapic *lsapic;
+        cpumask_t tmp_map;
+        long physid;
+        int cpu;
+ 
+        if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
+                return -EINVAL;
+
+        if (!buffer.length ||  !buffer.pointer)
+                return -EINVAL;
+ 
+        obj = buffer.pointer;
+        if (obj->type != ACPI_TYPE_BUFFER ||
+            obj->buffer.length < sizeof(*lsapic)) {
+                acpi_os_free(buffer.pointer);
+                return -EINVAL;
+        }
+
+        lsapic = (struct acpi_table_lsapic *)obj->buffer.pointer;
+
+        if ((lsapic->header.type != ACPI_MADT_LSAPIC) ||
+            (!lsapic->flags.enabled)) {
+                acpi_os_free(buffer.pointer);
+                return -EINVAL;
+        }
+
+        physid = ((lsapic->id <<8) | (lsapic->eid));
+
+        acpi_os_free(buffer.pointer);
+        buffer.length = ACPI_ALLOCATE_BUFFER;
+        buffer.pointer = NULL;
+
+        cpus_complement(tmp_map, cpu_present_map);
+        cpu = first_cpu(tmp_map);
+        if(cpu >= NR_CPUS)
+                return -EINVAL;
+
+        acpi_map_cpu2node(handle, cpu, physid);
+
+        cpu_set(cpu, cpu_present_map);
+        ia64_cpu_to_sapicid[cpu] = physid;
+        ia64_acpiid_to_sapicid[lsapic->acpi_id] = ia64_cpu_to_sapicid[cpu];
+
+        *pcpu = cpu;
+        return(0);
+}
+EXPORT_SYMBOL(acpi_map_lsapic);
+
+
+int
+acpi_unmap_lsapic(int cpu)
+{
+        int i;
+
+        for (i=0; i<MAX_SAPICS; i++) {
+                if (ia64_acpiid_to_sapicid[i] == ia64_cpu_to_sapicid[cpu]) {
+                        ia64_acpiid_to_sapicid[i] = -1;
+                        break;
+                }
+        }
+        ia64_cpu_to_sapicid[cpu] = -1;
+        cpu_clear(cpu,cpu_present_map);
+
+#ifdef CONFIG_ACPI_NUMA
+        /* NUMA specific cleanup's */
+#endif
+
+        return(0);
+}
+EXPORT_SYMBOL(acpi_unmap_lsapic);
+#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+ 
+
+#ifdef CONFIG_ACPI_NUMA
+acpi_status __init
+acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
+{
+        struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+        union acpi_object *obj;
+        struct acpi_table_iosapic *iosapic;
+        unsigned int gsi_base;
+        int node;
+
+        /* Only care about objects w/ a method that returns the MADT */
+        if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
+                return AE_OK;
+
+        if (!buffer.length || !buffer.pointer)
+                return AE_OK;
+
+        obj = buffer.pointer;
+        if (obj->type != ACPI_TYPE_BUFFER ||
+            obj->buffer.length < sizeof(*iosapic)) {
+                acpi_os_free(buffer.pointer);
+                return AE_OK;
+        }
+
+        iosapic = (struct acpi_table_iosapic *)obj->buffer.pointer;
+
+        if (iosapic->header.type != ACPI_MADT_IOSAPIC) {
+                acpi_os_free(buffer.pointer);
+                return AE_OK;
+        }
+
+        gsi_base = iosapic->global_irq_base;
+
+        acpi_os_free(buffer.pointer);
+        buffer.length = ACPI_ALLOCATE_BUFFER;
+        buffer.pointer = NULL;
+
+        /*
+         * OK, it's an IOSAPIC MADT entry, look for a _PXM method to tell
+         * us which node to associate this with.
+         */
+        if (ACPI_FAILURE(acpi_evaluate_object(handle, "_PXM", NULL, &buffer)))
+                return AE_OK;
+
+        if (!buffer.length || !buffer.pointer)
+                return AE_OK;
+
+        obj = buffer.pointer;
+
+        if (obj->type != ACPI_TYPE_INTEGER ||
+            obj->integer.value >= MAX_PXM_DOMAINS) {
+                acpi_os_free(buffer.pointer);
+                return AE_OK;
+        }
+
+        node = pxm_to_nid_map[obj->integer.value];
+        acpi_os_free(buffer.pointer);
+
+        if (node >= MAX_NUMNODES || !node_online(node) ||
+            cpus_empty(node_to_cpumask(node)))
+                return AE_OK;
+
+        /* We know a gsi to node mapping! */
+        map_iosapic_to_node(gsi_base, node);
+        return AE_OK;
+}
+#endif /* CONFIG_NUMA */
+#endif /* CONFIG_ACPI_BOOT */