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-rw-r--r--arch/ia64/kernel/acpi.c913
1 files changed, 0 insertions, 913 deletions
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
deleted file mode 100644
index 41e8fe55cd..0000000000
--- a/arch/ia64/kernel/acpi.c
+++ /dev/null
@@ -1,913 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * 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>
- */
-
-#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/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;
-
-#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(union acpi_subtable_headers * 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(union acpi_subtable_headers *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(union acpi_subtable_headers * 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(union acpi_subtable_headers * 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(union acpi_subtable_headers * 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(union acpi_subtable_headers * 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(union acpi_subtable_headers * 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 (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 (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();
- slit_distance(0, 0) = LOCAL_DISTANCE;
- goto out;
- }
-
- /*
- * 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++)
- slit_distance(i, j) = i == j ?
- LOCAL_DISTANCE : REMOTE_DISTANCE;
- goto out;
- }
-
- 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);
- slit_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
-out:
- node_possible_map = node_online_map;
-}
-#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) {
- 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)
-{
- int cpu;
-
- cpu = cpumask_first_zero(cpu_present_mask);
- 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 IA64 starts to support suspend...
- */
-int acpi_suspend_lowlevel(void) { return 0; }
-
-void acpi_proc_quirk_mwait_check(void)
-{
-}