1 files changed, 64 insertions, 0 deletions

diff --git a/arch/mips/include/asm/sn/arch.h b/arch/mips/include/asm/sn/arch.h
new file mode 100644
index 000000000000..bd75945e10ff
--- /dev/null
+++ b/arch/mips/include/asm/sn/arch.h
@@ -0,0 +1,64 @@
+/*
+ * 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 specific setup.
+ *
+ * Copyright (C) 1995 - 1997, 1999 Silcon Graphics, Inc.
+ * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
+ */
+#ifndef _ASM_SN_ARCH_H
+#define _ASM_SN_ARCH_H
+
+#include <linux/types.h>
+#include <asm/sn/types.h>
+#ifdef CONFIG_SGI_IP27
+#include <asm/sn/sn0/arch.h>
+#endif
+
+typedef u64     hubreg_t;
+
+#define cputonasid(cpu)         (sn_cpu_info[(cpu)].p_nasid)
+#define cputoslice(cpu)         (sn_cpu_info[(cpu)].p_slice)
+#define makespnum(_nasid, _slice)                                       \
+                (((_nasid) << CPUS_PER_NODE_SHFT) | (_slice))
+
+#define INVALID_NASID           (nasid_t)-1
+#define INVALID_CNODEID         (cnodeid_t)-1
+#define INVALID_PNODEID         (pnodeid_t)-1
+#define INVALID_MODULE          (moduleid_t)-1
+#define INVALID_PARTID          (partid_t)-1
+
+extern nasid_t get_nasid(void);
+extern cnodeid_t get_cpu_cnode(cpuid_t);
+extern int get_cpu_slice(cpuid_t);
+
+/*
+ * NO ONE should access these arrays directly.  The only reason we refer to
+ * them here is to avoid the procedure call that would be required in the
+ * macros below.  (Really want private data members here :-)
+ */
+extern cnodeid_t nasid_to_compact_node[MAX_NASIDS];
+extern nasid_t compact_to_nasid_node[MAX_COMPACT_NODES];
+
+/*
+ * These macros are used by various parts of the kernel to convert
+ * between the three different kinds of node numbering.   At least some
+ * of them may change to procedure calls in the future, but the macros
+ * will continue to work.  Don't use the arrays above directly.
+ */
+
+#define NASID_TO_REGION(nnode)          \
+    ((nnode) >> \
+     (is_fine_dirmode() ? NASID_TO_FINEREG_SHFT : NASID_TO_COARSEREG_SHFT))
+
+extern cnodeid_t nasid_to_compact_node[MAX_NASIDS];
+extern nasid_t compact_to_nasid_node[MAX_COMPACT_NODES];
+extern cnodeid_t cpuid_to_compact_node[MAXCPUS];
+
+#define NASID_TO_COMPACT_NODEID(nnode)  (nasid_to_compact_node[nnode])
+#define COMPACT_TO_NASID_NODEID(cnode)  (compact_to_nasid_node[cnode])
+#define CPUID_TO_COMPACT_NODEID(cpu)    (cpuid_to_compact_node[(cpu)])
+
+#endif /* _ASM_SN_ARCH_H */