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Diffstat (limited to 'drivers/acpi/numa.c')
-rw-r--r--drivers/acpi/numa.c345
1 files changed, 0 insertions, 345 deletions
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
deleted file mode 100644
index 33e609f63585..000000000000
--- a/drivers/acpi/numa.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- * acpi_numa.c - ACPI NUMA support
- *
- * Copyright (C) 2002 Takayoshi Kochi <t-kochi@bq.jp.nec.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/types.h>
-#include <linux/errno.h>
-#include <linux/acpi.h>
-#include <linux/numa.h>
-#include <acpi/acpi_bus.h>
-
-#define PREFIX "ACPI: "
-
-#define ACPI_NUMA 0x80000000
-#define _COMPONENT ACPI_NUMA
-ACPI_MODULE_NAME("numa");
-
-static nodemask_t nodes_found_map = NODE_MASK_NONE;
-
-/* maps to convert between proximity domain and logical node ID */
-static int pxm_to_node_map[MAX_PXM_DOMAINS]
- = { [0 ... MAX_PXM_DOMAINS - 1] = NUMA_NO_NODE };
-static int node_to_pxm_map[MAX_NUMNODES]
- = { [0 ... MAX_NUMNODES - 1] = PXM_INVAL };
-
-unsigned char acpi_srat_revision __initdata;
-
-int pxm_to_node(int pxm)
-{
- if (pxm < 0)
- return NUMA_NO_NODE;
- return pxm_to_node_map[pxm];
-}
-
-int node_to_pxm(int node)
-{
- if (node < 0)
- return PXM_INVAL;
- return node_to_pxm_map[node];
-}
-
-void __acpi_map_pxm_to_node(int pxm, int node)
-{
- if (pxm_to_node_map[pxm] == NUMA_NO_NODE || node < pxm_to_node_map[pxm])
- pxm_to_node_map[pxm] = node;
- if (node_to_pxm_map[node] == PXM_INVAL || pxm < node_to_pxm_map[node])
- node_to_pxm_map[node] = pxm;
-}
-
-int acpi_map_pxm_to_node(int pxm)
-{
- int node = pxm_to_node_map[pxm];
-
- if (node < 0) {
- if (nodes_weight(nodes_found_map) >= MAX_NUMNODES)
- return NUMA_NO_NODE;
- node = first_unset_node(nodes_found_map);
- __acpi_map_pxm_to_node(pxm, node);
- node_set(node, nodes_found_map);
- }
-
- return node;
-}
-
-static void __init
-acpi_table_print_srat_entry(struct acpi_subtable_header *header)
-{
-
- ACPI_FUNCTION_NAME("acpi_table_print_srat_entry");
-
- if (!header)
- return;
-
- switch (header->type) {
-
- case ACPI_SRAT_TYPE_CPU_AFFINITY:
-#ifdef ACPI_DEBUG_OUTPUT
- {
- struct acpi_srat_cpu_affinity *p =
- (struct acpi_srat_cpu_affinity *)header;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
- p->apic_id, p->local_sapic_eid,
- p->proximity_domain_lo,
- (p->flags & ACPI_SRAT_CPU_ENABLED)?
- "enabled" : "disabled"));
- }
-#endif /* ACPI_DEBUG_OUTPUT */
- break;
-
- case ACPI_SRAT_TYPE_MEMORY_AFFINITY:
-#ifdef ACPI_DEBUG_OUTPUT
- {
- struct acpi_srat_mem_affinity *p =
- (struct acpi_srat_mem_affinity *)header;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "SRAT Memory (0x%lx length 0x%lx) in proximity domain %d %s%s%s\n",
- (unsigned long)p->base_address,
- (unsigned long)p->length,
- p->proximity_domain,
- (p->flags & ACPI_SRAT_MEM_ENABLED)?
- "enabled" : "disabled",
- (p->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE)?
- " hot-pluggable" : "",
- (p->flags & ACPI_SRAT_MEM_NON_VOLATILE)?
- " non-volatile" : ""));
- }
-#endif /* ACPI_DEBUG_OUTPUT */
- break;
-
- case ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY:
-#ifdef ACPI_DEBUG_OUTPUT
- {
- struct acpi_srat_x2apic_cpu_affinity *p =
- (struct acpi_srat_x2apic_cpu_affinity *)header;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "SRAT Processor (x2apicid[0x%08x]) in"
- " proximity domain %d %s\n",
- p->apic_id,
- p->proximity_domain,
- (p->flags & ACPI_SRAT_CPU_ENABLED) ?
- "enabled" : "disabled"));
- }
-#endif /* ACPI_DEBUG_OUTPUT */
- break;
- default:
- printk(KERN_WARNING PREFIX
- "Found unsupported SRAT entry (type = 0x%x)\n",
- header->type);
- break;
- }
-}
-
-/*
- * A lot of BIOS fill in 10 (= no distance) everywhere. This messes
- * up the NUMA heuristics which wants the local node to have a smaller
- * distance than the others.
- * Do some quick checks here and only use the SLIT if it passes.
- */
-static __init int slit_valid(struct acpi_table_slit *slit)
-{
- int i, j;
- int d = slit->locality_count;
- for (i = 0; i < d; i++) {
- for (j = 0; j < d; j++) {
- u8 val = slit->entry[d*i + j];
- if (i == j) {
- if (val != LOCAL_DISTANCE)
- return 0;
- } else if (val <= LOCAL_DISTANCE)
- return 0;
- }
- }
- return 1;
-}
-
-static int __init acpi_parse_slit(struct acpi_table_header *table)
-{
- struct acpi_table_slit *slit;
-
- if (!table)
- return -EINVAL;
-
- slit = (struct acpi_table_slit *)table;
-
- if (!slit_valid(slit)) {
- printk(KERN_INFO "ACPI: SLIT table looks invalid. Not used.\n");
- return -EINVAL;
- }
- acpi_numa_slit_init(slit);
-
- return 0;
-}
-
-void __init __attribute__ ((weak))
-acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
-{
- printk(KERN_WARNING PREFIX
- "Found unsupported x2apic [0x%08x] SRAT entry\n", pa->apic_id);
- return;
-}
-
-
-static int __init
-acpi_parse_x2apic_affinity(struct acpi_subtable_header *header,
- const unsigned long end)
-{
- struct acpi_srat_x2apic_cpu_affinity *processor_affinity;
-
- processor_affinity = (struct acpi_srat_x2apic_cpu_affinity *)header;
- if (!processor_affinity)
- return -EINVAL;
-
- acpi_table_print_srat_entry(header);
-
- /* let architecture-dependent part to do it */
- acpi_numa_x2apic_affinity_init(processor_affinity);
-
- return 0;
-}
-
-static int __init
-acpi_parse_processor_affinity(struct acpi_subtable_header *header,
- const unsigned long end)
-{
- struct acpi_srat_cpu_affinity *processor_affinity;
-
- processor_affinity = (struct acpi_srat_cpu_affinity *)header;
- if (!processor_affinity)
- return -EINVAL;
-
- acpi_table_print_srat_entry(header);
-
- /* let architecture-dependent part to do it */
- acpi_numa_processor_affinity_init(processor_affinity);
-
- return 0;
-}
-
-static int __initdata parsed_numa_memblks;
-
-static int __init
-acpi_parse_memory_affinity(struct acpi_subtable_header * header,
- const unsigned long end)
-{
- struct acpi_srat_mem_affinity *memory_affinity;
-
- memory_affinity = (struct acpi_srat_mem_affinity *)header;
- if (!memory_affinity)
- return -EINVAL;
-
- acpi_table_print_srat_entry(header);
-
- /* let architecture-dependent part to do it */
- if (!acpi_numa_memory_affinity_init(memory_affinity))
- parsed_numa_memblks++;
- return 0;
-}
-
-static int __init acpi_parse_srat(struct acpi_table_header *table)
-{
- struct acpi_table_srat *srat;
- if (!table)
- return -EINVAL;
-
- srat = (struct acpi_table_srat *)table;
- acpi_srat_revision = srat->header.revision;
-
- /* Real work done in acpi_table_parse_srat below. */
-
- return 0;
-}
-
-static int __init
-acpi_table_parse_srat(enum acpi_srat_type id,
- acpi_tbl_entry_handler handler, unsigned int max_entries)
-{
- return acpi_table_parse_entries(ACPI_SIG_SRAT,
- sizeof(struct acpi_table_srat), id,
- handler, max_entries);
-}
-
-int __init acpi_numa_init(void)
-{
- int cnt = 0;
-
- /*
- * Should not limit number with cpu num that is from NR_CPUS or nr_cpus=
- * SRAT cpu entries could have different order with that in MADT.
- * So go over all cpu entries in SRAT to get apicid to node mapping.
- */
-
- /* SRAT: Static Resource Affinity Table */
- if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) {
- acpi_table_parse_srat(ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY,
- acpi_parse_x2apic_affinity, 0);
- acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY,
- acpi_parse_processor_affinity, 0);
- cnt = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY,
- acpi_parse_memory_affinity,
- NR_NODE_MEMBLKS);
- }
-
- /* SLIT: System Locality Information Table */
- acpi_table_parse(ACPI_SIG_SLIT, acpi_parse_slit);
-
- acpi_numa_arch_fixup();
-
- if (cnt < 0)
- return cnt;
- else if (!parsed_numa_memblks)
- return -ENOENT;
- return 0;
-}
-
-int acpi_get_pxm(acpi_handle h)
-{
- unsigned long long pxm;
- acpi_status status;
- acpi_handle handle;
- acpi_handle phandle = h;
-
- do {
- handle = phandle;
- status = acpi_evaluate_integer(handle, "_PXM", NULL, &pxm);
- if (ACPI_SUCCESS(status))
- return pxm;
- status = acpi_get_parent(handle, &phandle);
- } while (ACPI_SUCCESS(status));
- return -1;
-}
-
-int acpi_get_node(acpi_handle *handle)
-{
- int pxm, node = -1;
-
- pxm = acpi_get_pxm(handle);
- if (pxm >= 0 && pxm < MAX_PXM_DOMAINS)
- node = acpi_map_pxm_to_node(pxm);
-
- return node;
-}
-EXPORT_SYMBOL(acpi_get_node);
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