v4.19.13 snapshot.
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
new file mode 100644
index 0000000..1dacbf5
--- /dev/null
+++ b/arch/ia64/kernel/acpi.c
@@ -0,0 +1,1000 @@
+/*
+ * 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>
+ * Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/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 <linux/slab.h>
+#include <acpi/processor.h>
+#include <asm/io.h>
+#include <asm/iosapic.h>
+#include <asm/machvec.h>
+#include <asm/page.h>
+#include <asm/numa.h>
+#include <asm/sal.h>
+#include <asm/cyclone.h>
+
+#define PREFIX "ACPI: "
+
+int acpi_lapic;
+unsigned int acpi_cpei_override;
+unsigned int acpi_cpei_phys_cpuid;
+
+unsigned long acpi_wakeup_address = 0;
+
+#ifdef CONFIG_IA64_GENERIC
+static unsigned long __init acpi_find_rsdp(void)
+{
+ unsigned long rsdp_phys = 0;
+
+ if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
+ rsdp_phys = efi.acpi20;
+ else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
+ printk(KERN_WARNING PREFIX
+ "v1.0/r0.71 tables no longer supported\n");
+ return rsdp_phys;
+}
+
+const char __init *
+acpi_get_sysname(void)
+{
+ unsigned long rsdp_phys;
+ struct acpi_table_rsdp *rsdp;
+ struct acpi_table_xsdt *xsdt;
+ struct acpi_table_header *hdr;
+#ifdef CONFIG_INTEL_IOMMU
+ u64 i, nentries;
+#endif
+
+ 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 acpi_table_rsdp *)__va(rsdp_phys);
+ if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) {
+ printk(KERN_ERR
+ "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
+ return "dig";
+ }
+
+ xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address);
+ hdr = &xsdt->header;
+ if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 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")) {
+ if (!strcmp(hdr->oem_table_id + 4, "UV"))
+ return "uv";
+ else
+ return "sn2";
+ }
+
+#ifdef CONFIG_INTEL_IOMMU
+ /* Look for Intel IOMMU */
+ nentries = (hdr->length - sizeof(*hdr)) /
+ sizeof(xsdt->table_offset_entry[0]);
+ for (i = 0; i < nentries; i++) {
+ hdr = __va(xsdt->table_offset_entry[i]);
+ if (strncmp(hdr->signature, ACPI_SIG_DMAR,
+ sizeof(ACPI_SIG_DMAR) - 1) == 0)
+ return "dig_vtd";
+ }
+#endif
+
+ return "dig";
+}
+#endif /* CONFIG_IA64_GENERIC */
+
+#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;
+}
+
+void __init __iomem *__acpi_map_table(unsigned long phys, unsigned long size)
+{
+ return __va(phys);
+}
+
+void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
+{
+}
+
+/* --------------------------------------------------------------------------
+ Boot-time Table Parsing
+ -------------------------------------------------------------------------- */
+
+static int available_cpus __initdata;
+struct acpi_table_madt *acpi_madt __initdata;
+static u8 has_8259;
+
+static int __init
+acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
+ const unsigned long end)
+{
+ struct acpi_madt_local_apic_override *lapic;
+
+ lapic = (struct acpi_madt_local_apic_override *)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(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_local_sapic *lsapic;
+
+ lsapic = (struct acpi_madt_local_sapic *)header;
+
+ /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */
+
+ if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {
+#ifdef CONFIG_SMP
+ smp_boot_data.cpu_phys_id[available_cpus] =
+ (lsapic->id << 8) | lsapic->eid;
+#endif
+ ++available_cpus;
+ }
+
+ total_cpus++;
+ return 0;
+}
+
+static int __init
+acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_local_apic_nmi *lacpi_nmi;
+
+ lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header;
+
+ if (BAD_MADT_ENTRY(lacpi_nmi, end))
+ return -EINVAL;
+
+ /* TBD: Support lapic_nmi entries */
+ return 0;
+}
+
+static int __init
+acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_io_sapic *iosapic;
+
+ iosapic = (struct acpi_madt_io_sapic *)header;
+
+ if (BAD_MADT_ENTRY(iosapic, end))
+ return -EINVAL;
+
+ return iosapic_init(iosapic->address, iosapic->global_irq_base);
+}
+
+static unsigned int __initdata acpi_madt_rev;
+
+static int __init
+acpi_parse_plat_int_src(struct acpi_subtable_header * header,
+ const unsigned long end)
+{
+ struct acpi_madt_interrupt_source *plintsrc;
+ int vector;
+
+ plintsrc = (struct acpi_madt_interrupt_source *)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->io_sapic_vector,
+ plintsrc->eid,
+ plintsrc->id,
+ ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) ==
+ ACPI_MADT_POLARITY_ACTIVE_HIGH) ?
+ IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
+ ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) ==
+ ACPI_MADT_TRIGGER_EDGE) ?
+ IOSAPIC_EDGE : IOSAPIC_LEVEL);
+
+ platform_intr_list[plintsrc->type] = vector;
+ if (acpi_madt_rev > 1) {
+ acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE;
+ }
+
+ /*
+ * Save the physical id, so we can check when its being removed
+ */
+ acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff;
+
+ return 0;
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+unsigned int can_cpei_retarget(void)
+{
+ extern int cpe_vector;
+ extern unsigned int force_cpei_retarget;
+
+ /*
+ * Only if CPEI is supported and the override flag
+ * is present, otherwise return that its re-targettable
+ * if we are in polling mode.
+ */
+ if (cpe_vector > 0) {
+ if (acpi_cpei_override || force_cpei_retarget)
+ return 1;
+ else
+ return 0;
+ }
+ return 1;
+}
+
+unsigned int is_cpu_cpei_target(unsigned int cpu)
+{
+ unsigned int logical_id;
+
+ logical_id = cpu_logical_id(acpi_cpei_phys_cpuid);
+
+ if (logical_id == cpu)
+ return 1;
+ else
+ return 0;
+}
+
+void set_cpei_target_cpu(unsigned int cpu)
+{
+ acpi_cpei_phys_cpuid = cpu_physical_id(cpu);
+}
+#endif
+
+unsigned int get_cpei_target_cpu(void)
+{
+ return acpi_cpei_phys_cpuid;
+}
+
+static int __init
+acpi_parse_int_src_ovr(struct acpi_subtable_header * header,
+ const unsigned long end)
+{
+ struct acpi_madt_interrupt_override *p;
+
+ p = (struct acpi_madt_interrupt_override *)header;
+
+ if (BAD_MADT_ENTRY(p, end))
+ return -EINVAL;
+
+ iosapic_override_isa_irq(p->source_irq, p->global_irq,
+ ((p->inti_flags & ACPI_MADT_POLARITY_MASK) ==
+ ACPI_MADT_POLARITY_ACTIVE_LOW) ?
+ IOSAPIC_POL_LOW : IOSAPIC_POL_HIGH,
+ ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) ==
+ ACPI_MADT_TRIGGER_LEVEL) ?
+ IOSAPIC_LEVEL : IOSAPIC_EDGE);
+ return 0;
+}
+
+static int __init
+acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_madt_nmi_source *nmi_src;
+
+ nmi_src = (struct acpi_madt_nmi_source *)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(struct acpi_table_header *table)
+{
+ acpi_madt = (struct acpi_table_madt *)table;
+
+ acpi_madt_rev = acpi_madt->header.revision;
+
+ /* 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 & ACPI_MADT_PCAT_COMPAT;
+#endif
+ iosapic_system_init(has_8259);
+
+ /* Get base address of IPI Message Block */
+
+ if (acpi_madt->address)
+ ipi_base_addr = ioremap(acpi_madt->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 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))
+static struct acpi_table_slit __initdata *slit_table;
+cpumask_t early_cpu_possible_map = CPU_MASK_NONE;
+
+static int __init
+get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa)
+{
+ int pxm;
+
+ pxm = pa->proximity_domain_lo;
+ if (ia64_platform_is("sn2") || acpi_srat_revision >= 2)
+ pxm += pa->proximity_domain_hi[0] << 8;
+ return pxm;
+}
+
+static int __init
+get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma)
+{
+ int pxm;
+
+ pxm = ma->proximity_domain;
+ if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1)
+ pxm &= 0xff;
+
+ return pxm;
+}
+
+/*
+ * 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->locality_count * slit->locality_count;
+ if (slit->header.length != len) {
+ printk(KERN_ERR
+ "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
+ len, slit->header.length);
+ return;
+ }
+ slit_table = slit;
+}
+
+void __init
+acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
+{
+ int pxm;
+
+ if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))
+ return;
+
+ if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) {
+ printk_once(KERN_WARNING
+ "node_cpuid[%ld] is too small, may not be able to use all cpus\n",
+ ARRAY_SIZE(node_cpuid));
+ return;
+ }
+ pxm = get_processor_proximity_domain(pa);
+
+ /* record this node in proximity bitmap */
+ pxm_bit_set(pxm);
+
+ node_cpuid[srat_num_cpus].phys_id =
+ (pa->apic_id << 8) | (pa->local_sapic_eid);
+ /* nid should be overridden as logical node id later */
+ node_cpuid[srat_num_cpus].nid = pxm;
+ cpumask_set_cpu(srat_num_cpus, &early_cpu_possible_map);
+ srat_num_cpus++;
+}
+
+int __init
+acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
+{
+ unsigned long paddr, size;
+ int pxm;
+ struct node_memblk_s *p, *q, *pend;
+
+ pxm = get_memory_proximity_domain(ma);
+
+ /* fill node memory chunk structure */
+ paddr = ma->base_address;
+ size = ma->length;
+
+ /* Ignore disabled entries */
+ if (!(ma->flags & ACPI_SRAT_MEM_ENABLED))
+ return -1;
+
+ if (num_node_memblks >= NR_NODE_MEMBLKS) {
+ pr_err("NUMA: too many memblk ranges\n");
+ return -EINVAL;
+ }
+
+ /* 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++;
+ return 0;
+}
+
+void __init acpi_numa_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.
+ */
+ nodes_clear(node_online_map);
+ for (i = 0; i < MAX_PXM_DOMAINS; i++) {
+ if (pxm_bit_test(i)) {
+ int nid = acpi_map_pxm_to_node(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_node(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_each_possible_early_cpu(i)
+ node_cpuid[i].nid = pxm_to_node(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) {
+ for (i = 0; i < MAX_NUMNODES; i++)
+ for (j = 0; j < MAX_NUMNODES; j++)
+ node_distance(i, j) = i == j ? LOCAL_DISTANCE :
+ REMOTE_DISTANCE;
+ return;
+ }
+
+ memset(numa_slit, -1, sizeof(numa_slit));
+ for (i = 0; i < slit_table->locality_count; i++) {
+ if (!pxm_bit_test(i))
+ continue;
+ node_from = pxm_to_node(i);
+ for (j = 0; j < slit_table->locality_count; j++) {
+ if (!pxm_bit_test(j))
+ continue;
+ node_to = pxm_to_node(j);
+ node_distance(node_from, node_to) =
+ slit_table->entry[i * slit_table->locality_count + 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 */
+
+/*
+ * success: return IRQ number (>=0)
+ * failure: return < 0
+ */
+int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity)
+{
+ if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
+ return gsi;
+
+ if (has_8259 && gsi < 16)
+ return isa_irq_to_vector(gsi);
+
+ return iosapic_register_intr(gsi,
+ (polarity ==
+ ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH :
+ IOSAPIC_POL_LOW,
+ (triggering ==
+ ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE :
+ IOSAPIC_LEVEL);
+}
+EXPORT_SYMBOL_GPL(acpi_register_gsi);
+
+void acpi_unregister_gsi(u32 gsi)
+{
+ if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
+ return;
+
+ if (has_8259 && gsi < 16)
+ return;
+
+ iosapic_unregister_intr(gsi);
+}
+EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
+
+static int __init acpi_parse_fadt(struct acpi_table_header *table)
+{
+ struct acpi_table_header *fadt_header;
+ struct acpi_table_fadt *fadt;
+
+ fadt_header = (struct acpi_table_header *)table;
+ if (fadt_header->revision != 3)
+ return -ENODEV; /* Only deal with ACPI 2.0 FADT */
+
+ fadt = (struct acpi_table_fadt *)fadt_header;
+
+ acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE,
+ ACPI_ACTIVE_LOW);
+ return 0;
+}
+
+int __init early_acpi_boot_init(void)
+{
+ int ret;
+
+ /*
+ * do a partial walk of MADT to determine how many CPUs
+ * we have including offline CPUs
+ */
+ if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
+ printk(KERN_ERR PREFIX "Can't find MADT\n");
+ return 0;
+ }
+
+ ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
+ acpi_parse_lsapic, NR_CPUS);
+ if (ret < 1)
+ printk(KERN_ERR PREFIX
+ "Error parsing MADT - no LAPIC entries\n");
+ else
+ acpi_lapic = 1;
+
+#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;
+#endif
+ /* Make boot-up look pretty */
+ printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus,
+ total_cpus);
+
+ return 0;
+}
+
+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_SIG_MADT, acpi_parse_madt)) {
+ printk(KERN_ERR PREFIX "Can't find MADT\n");
+ goto skip_madt;
+ }
+
+ /* Local APIC */
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, 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_TYPE_LOCAL_APIC_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_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) {
+ if (!ia64_platform_is("sn2"))
+ printk(KERN_ERR PREFIX
+ "Error parsing MADT - no IOSAPIC entries\n");
+ }
+
+ /* System-Level Interrupt Routing */
+
+ if (acpi_table_parse_madt
+ (ACPI_MADT_TYPE_INTERRUPT_SOURCE, 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_TYPE_INTERRUPT_OVERRIDE, 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_TYPE_NMI_SOURCE, 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_SIG_FADT, acpi_parse_fadt))
+ printk(KERN_ERR PREFIX "Can't find FADT\n");
+
+#ifdef CONFIG_ACPI_NUMA
+#ifdef CONFIG_SMP
+ 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];
+ }
+#endif
+ build_cpu_to_node_map();
+#endif
+ return 0;
+}
+
+int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
+{
+ int tmp;
+
+ if (has_8259 && gsi < 16)
+ *irq = isa_irq_to_vector(gsi);
+ else {
+ tmp = gsi_to_irq(gsi);
+ if (tmp == -1)
+ return -1;
+ *irq = tmp;
+ }
+ return 0;
+}
+
+int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
+{
+ if (isa_irq >= 16)
+ return -1;
+ *gsi = isa_irq;
+ return 0;
+}
+
+/*
+ * ACPI based hotplug CPU support
+ */
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
+{
+#ifdef CONFIG_ACPI_NUMA
+ /*
+ * We don't have cpu-only-node hotadd. But if the system equips
+ * SRAT table, pxm is already found and node is ready.
+ * So, just pxm_to_nid(pxm) is OK.
+ * This code here is for the system which doesn't have full SRAT
+ * table for possible cpus.
+ */
+ node_cpuid[cpu].phys_id = physid;
+ node_cpuid[cpu].nid = acpi_get_node(handle);
+#endif
+ return 0;
+}
+
+int additional_cpus __initdata = -1;
+
+static __init int setup_additional_cpus(char *s)
+{
+ if (s)
+ additional_cpus = simple_strtol(s, NULL, 0);
+
+ return 0;
+}
+
+early_param("additional_cpus", setup_additional_cpus);
+
+/*
+ * cpu_possible_mask should be static, it cannot change as CPUs
+ * are onlined, or offlined. The reason is per-cpu data-structures
+ * are allocated by some modules at init time, and dont expect to
+ * do this dynamically on cpu arrival/departure.
+ * cpu_present_mask on the other hand can change dynamically.
+ * In case when cpu_hotplug is not compiled, then we resort to current
+ * behaviour, which is cpu_possible == cpu_present.
+ * - Ashok Raj
+ *
+ * Three ways to find out the number of additional hotplug CPUs:
+ * - If the BIOS specified disabled CPUs in ACPI/mptables use that.
+ * - The user can overwrite it with additional_cpus=NUM
+ * - Otherwise don't reserve additional CPUs.
+ */
+__init void prefill_possible_map(void)
+{
+ int i;
+ int possible, disabled_cpus;
+
+ disabled_cpus = total_cpus - available_cpus;
+
+ if (additional_cpus == -1) {
+ if (disabled_cpus > 0)
+ additional_cpus = disabled_cpus;
+ else
+ additional_cpus = 0;
+ }
+
+ possible = available_cpus + additional_cpus;
+
+ if (possible > nr_cpu_ids)
+ possible = nr_cpu_ids;
+
+ printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n",
+ possible, max((possible - available_cpus), 0));
+
+ for (i = 0; i < possible; i++)
+ set_cpu_possible(i, true);
+}
+
+static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)
+{
+ cpumask_t tmp_map;
+ int cpu;
+
+ cpumask_complement(&tmp_map, cpu_present_mask);
+ cpu = cpumask_first(&tmp_map);
+ if (cpu >= nr_cpu_ids)
+ return -EINVAL;
+
+ acpi_map_cpu2node(handle, cpu, physid);
+
+ set_cpu_present(cpu, true);
+ ia64_cpu_to_sapicid[cpu] = physid;
+
+ acpi_processor_set_pdc(handle);
+
+ *pcpu = cpu;
+ return (0);
+}
+
+/* wrapper to silence section mismatch warning */
+int __ref acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, u32 acpi_id,
+ int *pcpu)
+{
+ return _acpi_map_lsapic(handle, physid, pcpu);
+}
+EXPORT_SYMBOL(acpi_map_cpu);
+
+int acpi_unmap_cpu(int cpu)
+{
+ ia64_cpu_to_sapicid[cpu] = -1;
+ set_cpu_present(cpu, false);
+
+#ifdef CONFIG_ACPI_NUMA
+ /* NUMA specific cleanup's */
+#endif
+
+ return (0);
+}
+EXPORT_SYMBOL(acpi_unmap_cpu);
+#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+
+#ifdef CONFIG_ACPI_NUMA
+static acpi_status 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_madt_io_sapic *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)) {
+ kfree(buffer.pointer);
+ return AE_OK;
+ }
+
+ iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer;
+
+ if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) {
+ kfree(buffer.pointer);
+ return AE_OK;
+ }
+
+ gsi_base = iosapic->global_irq_base;
+
+ kfree(buffer.pointer);
+
+ /* OK, it's an IOSAPIC MADT entry; associate it with a node */
+ node = acpi_get_node(handle);
+ if (node == NUMA_NO_NODE || !node_online(node) ||
+ cpumask_empty(cpumask_of_node(node)))
+ return AE_OK;
+
+ /* We know a gsi to node mapping! */
+ map_iosapic_to_node(gsi_base, node);
+ return AE_OK;
+}
+
+static int __init
+acpi_map_iosapics (void)
+{
+ acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL);
+ return 0;
+}
+
+fs_initcall(acpi_map_iosapics);
+#endif /* CONFIG_ACPI_NUMA */
+
+int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
+{
+ int err;
+
+ if ((err = iosapic_init(phys_addr, gsi_base)))
+ return err;
+
+#ifdef CONFIG_ACPI_NUMA
+ acpi_map_iosapic(handle, 0, NULL, NULL);
+#endif /* CONFIG_ACPI_NUMA */
+
+ return 0;
+}
+
+EXPORT_SYMBOL(acpi_register_ioapic);
+
+int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
+{
+ return iosapic_remove(gsi_base);
+}
+
+EXPORT_SYMBOL(acpi_unregister_ioapic);
+
+/*
+ * acpi_suspend_lowlevel() - save kernel state and suspend.
+ *
+ * TBD when when IA64 starts to support suspend...
+ */
+int acpi_suspend_lowlevel(void) { return 0; }