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Diffstat (limited to 'arch/x86/mm/srat_64.c')
-rw-r--r--arch/x86/mm/srat_64.c260
1 files changed, 0 insertions, 260 deletions
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
deleted file mode 100644
index 8e9d3394f6d..00000000000
--- a/arch/x86/mm/srat_64.c
+++ /dev/null
@@ -1,260 +0,0 @@
-/*
- * ACPI 3.0 based NUMA setup
- * Copyright 2004 Andi Kleen, SuSE Labs.
- *
- * Reads the ACPI SRAT table to figure out what memory belongs to which CPUs.
- *
- * Called from acpi_numa_init while reading the SRAT and SLIT tables.
- * Assumes all memory regions belonging to a single proximity domain
- * are in one chunk. Holes between them will be included in the node.
- */
-
-#include <linux/kernel.h>
-#include <linux/acpi.h>
-#include <linux/mmzone.h>
-#include <linux/bitmap.h>
-#include <linux/module.h>
-#include <linux/topology.h>
-#include <linux/bootmem.h>
-#include <linux/memblock.h>
-#include <linux/mm.h>
-#include <asm/proto.h>
-#include <asm/numa.h>
-#include <asm/e820.h>
-#include <asm/apic.h>
-#include <asm/uv/uv.h>
-
-int acpi_numa __initdata;
-
-static struct bootnode nodes_add[MAX_NUMNODES];
-
-static __init int setup_node(int pxm)
-{
- return acpi_map_pxm_to_node(pxm);
-}
-
-static __init void bad_srat(void)
-{
- printk(KERN_ERR "SRAT: SRAT not used.\n");
- acpi_numa = -1;
- memset(nodes_add, 0, sizeof(nodes_add));
-}
-
-static __init inline int srat_disabled(void)
-{
- return acpi_numa < 0;
-}
-
-/* Callback for SLIT parsing */
-void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
-{
- int i, j;
-
- for (i = 0; i < slit->locality_count; i++)
- for (j = 0; j < slit->locality_count; j++)
- numa_set_distance(pxm_to_node(i), pxm_to_node(j),
- slit->entry[slit->locality_count * i + j]);
-}
-
-/* Callback for Proximity Domain -> x2APIC mapping */
-void __init
-acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
-{
- int pxm, node;
- int apic_id;
-
- if (srat_disabled())
- return;
- if (pa->header.length < sizeof(struct acpi_srat_x2apic_cpu_affinity)) {
- bad_srat();
- return;
- }
- if ((pa->flags & ACPI_SRAT_CPU_ENABLED) == 0)
- return;
- pxm = pa->proximity_domain;
- node = setup_node(pxm);
- if (node < 0) {
- printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm);
- bad_srat();
- return;
- }
-
- apic_id = pa->apic_id;
- if (apic_id >= MAX_LOCAL_APIC) {
- printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%04x -> Node %u skipped apicid that is too big\n", pxm, apic_id, node);
- return;
- }
- set_apicid_to_node(apic_id, node);
- node_set(node, numa_nodes_parsed);
- acpi_numa = 1;
- printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%04x -> Node %u\n",
- pxm, apic_id, node);
-}
-
-/* Callback for Proximity Domain -> LAPIC mapping */
-void __init
-acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
-{
- int pxm, node;
- int apic_id;
-
- if (srat_disabled())
- return;
- if (pa->header.length != sizeof(struct acpi_srat_cpu_affinity)) {
- bad_srat();
- return;
- }
- if ((pa->flags & ACPI_SRAT_CPU_ENABLED) == 0)
- return;
- pxm = pa->proximity_domain_lo;
- node = setup_node(pxm);
- if (node < 0) {
- printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm);
- bad_srat();
- return;
- }
-
- if (get_uv_system_type() >= UV_X2APIC)
- apic_id = (pa->apic_id << 8) | pa->local_sapic_eid;
- else
- apic_id = pa->apic_id;
-
- if (apic_id >= MAX_LOCAL_APIC) {
- printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%02x -> Node %u skipped apicid that is too big\n", pxm, apic_id, node);
- return;
- }
-
- set_apicid_to_node(apic_id, node);
- node_set(node, numa_nodes_parsed);
- acpi_numa = 1;
- printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%02x -> Node %u\n",
- pxm, apic_id, node);
-}
-
-#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
-static inline int save_add_info(void) {return 1;}
-#else
-static inline int save_add_info(void) {return 0;}
-#endif
-/*
- * Update nodes_add[]
- * This code supports one contiguous hot add area per node
- */
-static void __init
-update_nodes_add(int node, unsigned long start, unsigned long end)
-{
- unsigned long s_pfn = start >> PAGE_SHIFT;
- unsigned long e_pfn = end >> PAGE_SHIFT;
- int changed = 0;
- struct bootnode *nd = &nodes_add[node];
-
- /* I had some trouble with strange memory hotadd regions breaking
- the boot. Be very strict here and reject anything unexpected.
- If you want working memory hotadd write correct SRATs.
-
- The node size check is a basic sanity check to guard against
- mistakes */
- if ((signed long)(end - start) < NODE_MIN_SIZE) {
- printk(KERN_ERR "SRAT: Hotplug area too small\n");
- return;
- }
-
- /* This check might be a bit too strict, but I'm keeping it for now. */
- if (absent_pages_in_range(s_pfn, e_pfn) != e_pfn - s_pfn) {
- printk(KERN_ERR
- "SRAT: Hotplug area %lu -> %lu has existing memory\n",
- s_pfn, e_pfn);
- return;
- }
-
- /* Looks good */
-
- if (nd->start == nd->end) {
- nd->start = start;
- nd->end = end;
- changed = 1;
- } else {
- if (nd->start == end) {
- nd->start = start;
- changed = 1;
- }
- if (nd->end == start) {
- nd->end = end;
- changed = 1;
- }
- if (!changed)
- printk(KERN_ERR "SRAT: Hotplug zone not continuous. Partly ignored\n");
- }
-
- if (changed) {
- node_set(node, numa_nodes_parsed);
- printk(KERN_INFO "SRAT: hot plug zone found %Lx - %Lx\n",
- nd->start, nd->end);
- }
-}
-
-/* Callback for parsing of the Proximity Domain <-> Memory Area mappings */
-void __init
-acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
-{
- unsigned long start, end;
- int node, pxm;
-
- if (srat_disabled())
- return;
- if (ma->header.length != sizeof(struct acpi_srat_mem_affinity)) {
- bad_srat();
- return;
- }
- if ((ma->flags & ACPI_SRAT_MEM_ENABLED) == 0)
- return;
-
- if ((ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE) && !save_add_info())
- return;
- start = ma->base_address;
- end = start + ma->length;
- pxm = ma->proximity_domain;
- node = setup_node(pxm);
- if (node < 0) {
- printk(KERN_ERR "SRAT: Too many proximity domains.\n");
- bad_srat();
- return;
- }
-
- if (numa_add_memblk(node, start, end) < 0) {
- bad_srat();
- return;
- }
-
- printk(KERN_INFO "SRAT: Node %u PXM %u %lx-%lx\n", node, pxm,
- start, end);
-
- if (ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE)
- update_nodes_add(node, start, end);
-}
-
-void __init acpi_numa_arch_fixup(void) {}
-
-int __init x86_acpi_numa_init(void)
-{
- int ret;
-
- ret = acpi_numa_init();
- if (ret < 0)
- return ret;
- return srat_disabled() ? -EINVAL : 0;
-}
-
-#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) || defined(CONFIG_ACPI_HOTPLUG_MEMORY)
-int memory_add_physaddr_to_nid(u64 start)
-{
- int i, ret = 0;
-
- for_each_node(i)
- if (nodes_add[i].start <= start && nodes_add[i].end > start)
- ret = i;
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
-#endif
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