1 files changed, 89 insertions, 0 deletions

diff --git a/include/asm-mips/sn/sn0/arch.h b/include/asm-mips/sn/sn0/arch.h
new file mode 100644
index 000000000000..0e00dd474afc
--- /dev/null
+++ b/include/asm-mips/sn/sn0/arch.h
@@ -0,0 +1,89 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * SGI IP27 specific setup.
+ *
+ * Copyright (C) 1995 - 1997, 1999 Silcon Graphics, Inc.
+ * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
+ */
+#ifndef _ASM_SN_SN0_ARCH_H
+#define _ASM_SN_SN0_ARCH_H
+
+#include <linux/config.h>
+
+#ifndef SABLE
+
+#ifndef SN0XXL  /* 128 cpu SMP max */
+/*
+ * This is the maximum number of nodes that can be part of a kernel.
+ * Effectively, it's the maximum number of compact node ids (cnodeid_t).
+ */
+#define MAX_COMPACT_NODES       64
+
+/*
+ * MAXCPUS refers to the maximum number of CPUs in a single kernel.
+ * This is not necessarily the same as MAXNODES * CPUS_PER_NODE
+ */
+#define MAXCPUS                 128
+
+#else /* SN0XXL system */
+
+#define MAX_COMPACT_NODES       128
+#define MAXCPUS                 256
+
+#endif /* SN0XXL */
+
+/*
+ * This is the maximum number of NASIDS that can be present in a system.
+ * (Highest NASID plus one.)
+ */
+#define MAX_NASIDS              256
+
+/*
+ * MAX_REGIONS refers to the maximum number of hardware partitioned regions.
+ */
+#define MAX_REGIONS             64
+#define MAX_NONPREMIUM_REGIONS  16
+#define MAX_PREMIUM_REGIONS     MAX_REGIONS
+
+/*
+ * MAX_PARITIONS refers to the maximum number of logically defined
+ * partitions the system can support.
+ */
+#define MAX_PARTITIONS          MAX_REGIONS
+
+
+#else
+
+#define MAX_COMPACT_NODES       4
+#define MAX_NASIDS              4
+#define MAXCPUS                 8
+
+#endif
+
+#define NASID_MASK_BYTES        ((MAX_NASIDS + 7) / 8)
+
+/*
+ * Slot constants for SN0
+ */
+#ifdef CONFIG_SGI_SN0_N_MODE
+#define MAX_MEM_SLOTS   16                      /* max slots per node */
+#else /* !CONFIG_SGI_SN0_N_MODE, assume M_MODE */
+#define MAX_MEM_SLOTS   32                      /* max slots per node */
+#endif /* defined(N_MODE) */
+
+#if SABLE_RTL
+#define SLOT_SHIFT              (28)
+#define SLOT_MIN_MEM_SIZE       (16*1024*1024)
+#else
+#define SLOT_SHIFT              (27)
+#define SLOT_MIN_MEM_SIZE       (32*1024*1024)
+#endif
+
+#define CPUS_PER_NODE           2       /* CPUs on a single hub */
+#define CPUS_PER_NODE_SHFT      1       /* Bits to shift in the node number */
+#define CPUS_PER_SUBNODE        2       /* CPUs on a single hub PI */
+
+#endif /* _ASM_SN_SN0_ARCH_H */