1 files changed, 213 insertions, 0 deletions

diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
new file mode 100644
index 000000000000..a82834b32752
--- /dev/null
+++ b/drivers/acpi/numa.c
@@ -0,0 +1,213 @@
+/*
+ *  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/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/acpi.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acmacros.h>
+
+#define ACPI_NUMA       0x80000000
+#define _COMPONENT      ACPI_NUMA
+        ACPI_MODULE_NAME ("numa")
+
+extern int __init acpi_table_parse_madt_family (enum acpi_table_id id, unsigned long madt_size, int entry_id, acpi_madt_entry_handler handler, unsigned int max_entries);
+
+void __init
+acpi_table_print_srat_entry (
+        acpi_table_entry_header *header)
+{
+
+        ACPI_FUNCTION_NAME ("acpi_table_print_srat_entry");
+
+        if (!header)
+                return;
+
+        switch (header->type) {
+
+        case ACPI_SRAT_PROCESSOR_AFFINITY:
+#ifdef ACPI_DEBUG_OUTPUT
+        {
+                struct acpi_table_processor_affinity *p =
+                        (struct acpi_table_processor_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->lsapic_eid, p->proximity_domain,
+                       p->flags.enabled?"enabled":"disabled"));
+        }
+#endif /* ACPI_DEBUG_OUTPUT */
+                break;
+
+        case ACPI_SRAT_MEMORY_AFFINITY:
+#ifdef ACPI_DEBUG_OUTPUT
+        {
+                struct acpi_table_memory_affinity *p =
+                        (struct acpi_table_memory_affinity*) header;
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "SRAT Memory (0x%08x%08x length 0x%08x%08x type 0x%x) in proximity domain %d %s%s\n",
+                       p->base_addr_hi, p->base_addr_lo, p->length_hi, p->length_lo,
+                       p->memory_type, p->proximity_domain,
+                       p->flags.enabled ? "enabled" : "disabled",
+                       p->flags.hot_pluggable ? " hot-pluggable" : ""));
+        }
+#endif /* ACPI_DEBUG_OUTPUT */
+                break;
+
+        default:
+                printk(KERN_WARNING PREFIX "Found unsupported SRAT entry (type = 0x%x)\n",
+                        header->type);
+                break;
+        }
+}
+
+
+static int __init
+acpi_parse_slit (unsigned long phys_addr, unsigned long size)
+{
+        struct acpi_table_slit  *slit;
+        u32                     localities;
+
+        if (!phys_addr || !size)
+                return -EINVAL;
+
+        slit = (struct acpi_table_slit *) __va(phys_addr);
+
+        /* downcast just for %llu vs %lu for i386/ia64  */
+        localities = (u32) slit->localities;
+
+        acpi_numa_slit_init(slit);
+
+        return 0;
+}
+
+
+static int __init
+acpi_parse_processor_affinity (
+        acpi_table_entry_header *header,
+        const unsigned long end)
+{
+        struct acpi_table_processor_affinity *processor_affinity;
+
+        processor_affinity = (struct acpi_table_processor_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 __init
+acpi_parse_memory_affinity (
+        acpi_table_entry_header *header,
+        const unsigned long end)
+{
+        struct acpi_table_memory_affinity *memory_affinity;
+
+        memory_affinity = (struct acpi_table_memory_affinity*) header;
+        if (!memory_affinity)
+                return -EINVAL;
+
+        acpi_table_print_srat_entry(header);
+
+        /* let architecture-dependent part to do it */
+        acpi_numa_memory_affinity_init(memory_affinity);
+
+        return 0;
+}
+
+
+static int __init
+acpi_parse_srat (unsigned long phys_addr, unsigned long size)
+{
+        struct acpi_table_srat  *srat;
+
+        if (!phys_addr || !size)
+                return -EINVAL;
+
+        srat = (struct acpi_table_srat *) __va(phys_addr);
+
+        return 0;
+}
+
+
+int __init
+acpi_table_parse_srat (
+        enum acpi_srat_entry_id id,
+        acpi_madt_entry_handler handler,
+        unsigned int max_entries)
+{
+        return acpi_table_parse_madt_family(ACPI_SRAT, sizeof(struct acpi_table_srat),
+                                            id, handler, max_entries);
+}
+
+
+int __init
+acpi_numa_init(void)
+{
+        int                     result;
+
+        /* SRAT: Static Resource Affinity Table */
+        result = acpi_table_parse(ACPI_SRAT, acpi_parse_srat);
+
+        if (result > 0) {
+                result = acpi_table_parse_srat(ACPI_SRAT_PROCESSOR_AFFINITY,
+                                               acpi_parse_processor_affinity,
+                                               NR_CPUS);
+                result = acpi_table_parse_srat(ACPI_SRAT_MEMORY_AFFINITY,
+                                               acpi_parse_memory_affinity,
+                                               NR_NODE_MEMBLKS);        // IA64 specific
+        }
+
+        /* SLIT: System Locality Information Table */
+        result = acpi_table_parse(ACPI_SLIT, acpi_parse_slit);
+
+        acpi_numa_arch_fixup();
+        return 0;
+}
+
+int
+acpi_get_pxm(acpi_handle h)
+{
+        unsigned 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 (int)pxm;
+                status = acpi_get_parent(handle, &phandle);
+        } while(ACPI_SUCCESS(status));
+        return -1;
+}
+EXPORT_SYMBOL(acpi_get_pxm);