Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

include/asm-mips/sn/arch.h

@@ -0,0 +1,66 @@
+/*
+ * 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/config.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;
+typedef u64	nic_t;
+
+#define cputonasid(cpu)			(cpu_data[(cpu)].p_nasid)
+#define cputoslice(cpu)			(cpu_data[(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 */