1 files changed, 79 insertions, 0 deletions

diff --git a/arch/i386/kernel/numaq.c b/arch/i386/kernel/numaq.c
new file mode 100644
index 000000000000..e51edf0a6564
--- /dev/null
+++ b/arch/i386/kernel/numaq.c
@@ -0,0 +1,79 @@
+/*
+ * Written by: Patricia Gaughen, IBM Corporation
+ *
+ * Copyright (C) 2002, IBM Corp.
+ *
+ * All rights reserved.          
+ *
+ * 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, GOOD TITLE or
+ * NON INFRINGEMENT.  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Send feedback to <gone@us.ibm.com>
+ */
+
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+#include <linux/mmzone.h>
+#include <linux/module.h>
+#include <linux/nodemask.h>
+#include <asm/numaq.h>
+#include <asm/topology.h>
+
+#define MB_TO_PAGES(addr) ((addr) << (20 - PAGE_SHIFT))
+
+/*
+ * Function: smp_dump_qct()
+ *
+ * Description: gets memory layout from the quad config table.  This
+ * function also updates node_online_map with the nodes (quads) present.
+ */
+static void __init smp_dump_qct(void)
+{
+        int node;
+        struct eachquadmem *eq;
+        struct sys_cfg_data *scd =
+                (struct sys_cfg_data *)__va(SYS_CFG_DATA_PRIV_ADDR);
+
+        nodes_clear(node_online_map);
+        for_each_node(node) {
+                if (scd->quads_present31_0 & (1 << node)) {
+                        node_set_online(node);
+                        eq = &scd->eq[node];
+                        /* Convert to pages */
+                        node_start_pfn[node] = MB_TO_PAGES(
+                                eq->hi_shrd_mem_start - eq->priv_mem_size);
+                        node_end_pfn[node] = MB_TO_PAGES(
+                                eq->hi_shrd_mem_start + eq->hi_shrd_mem_size);
+
+                        memory_present(node,
+                                node_start_pfn[node], node_end_pfn[node]);
+                        node_remap_size[node] = node_memmap_size_bytes(node,
+                                                        node_start_pfn[node],
+                                                        node_end_pfn[node]);
+                }
+        }
+}
+
+/*
+ * Unlike Summit, we don't really care to let the NUMA-Q
+ * fall back to flat mode.  Don't compile for NUMA-Q
+ * unless you really need it!
+ */
+int __init get_memcfg_numaq(void)
+{
+        smp_dump_qct();
+        return 1;
+}