*
* SGI specific setup.
*
- * Copyright (C) 1995-1997,1999,2001-2003 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 1995-1997,1999,2001-2005 Silicon Graphics, Inc. All rights reserved.
* Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
*/
#ifndef _ASM_IA64_SN_ARCH_H
#define _ASM_IA64_SN_ARCH_H
+#include <linux/numa.h>
#include <asm/types.h>
+#include <asm/percpu.h>
#include <asm/sn/types.h>
#include <asm/sn/sn_cpuid.h>
-typedef u64 shubreg_t;
-typedef u64 hubreg_t;
-typedef u64 mmr_t;
-typedef u64 nic_t;
+/*
+ * This is the maximum number of NUMALINK nodes that can be part of a single
+ * SSI kernel. This number includes C-brick, M-bricks, and TIOs. Nodes in
+ * remote partitions are NOT included in this number.
+ * The number of compact nodes cannot exceed size of a coherency domain.
+ * The purpose of this define is to specify a node count that includes
+ * all C/M/TIO nodes in an SSI system.
+ *
+ * SGI system can currently support up to 256 C/M nodes plus additional TIO nodes.
+ *
+ * Note: ACPI20 has an architectural limit of 256 nodes. When we upgrade
+ * to ACPI3.0, this limit will be removed. The notion of "compact nodes"
+ * should be deleted and TIOs should be included in MAX_NUMNODES.
+ */
+#define MAX_TIO_NODES MAX_NUMNODES
+#define MAX_COMPACT_NODES (MAX_NUMNODES + MAX_TIO_NODES)
+
+/*
+ * Maximum number of nodes in all partitions and in all coherency domains.
+ * This is the total number of nodes accessible in the numalink fabric. It
+ * includes all C & M bricks, plus all TIOs.
+ *
+ * This value is also the value of the maximum number of NASIDs in the numalink
+ * fabric.
+ */
+#define MAX_NUMALINK_NODES 16384
-#define CNODE_TO_CPU_BASE(_cnode) (NODEPDA(_cnode)->node_first_cpu)
+/*
+ * The following defines attributes of the HUB chip. These attributes are
+ * frequently referenced. They are kept in the per-cpu data areas of each cpu.
+ * They are kept together in a struct to minimize cache misses.
+ */
+struct sn_hub_info_s {
+ u8 shub2;
+ u8 nasid_shift;
+ u8 as_shift;
+ u8 shub_1_1_found;
+ u16 nasid_bitmask;
+};
+DECLARE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
+#define sn_hub_info (&__get_cpu_var(__sn_hub_info))
+#define is_shub2() (sn_hub_info->shub2)
+#define is_shub1() (sn_hub_info->shub2 == 0)
-#define NASID_TO_COMPACT_NODEID(nasid) (nasid_to_cnodeid(nasid))
-#define COMPACT_TO_NASID_NODEID(cnode) (cnodeid_to_nasid(cnode))
+/*
+ * Use this macro to test if shub 1.1 wars should be enabled
+ */
+#define enable_shub_wars_1_1() (sn_hub_info->shub_1_1_found)
-#define INVALID_NASID ((nasid_t)-1)
-#define INVALID_CNODEID ((cnodeid_t)-1)
-#define INVALID_PNODEID ((pnodeid_t)-1)
-#define INVALID_SLAB (slabid_t)-1
-#define INVALID_MODULE ((moduleid_t)-1)
-#define INVALID_PARTID ((partid_t)-1)
+/*
+ * Compact node ID to nasid mappings kept in the per-cpu data areas of each
+ * cpu.
+ */
+DECLARE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_COMPACT_NODES]);
+#define sn_cnodeid_to_nasid (&__get_cpu_var(__sn_cnodeid_to_nasid[0]))
-extern cpuid_t cnodetocpu(cnodeid_t);
-void sn_flush_all_caches(long addr, long bytes);
-extern int is_fine_dirmode(void);
+extern u8 sn_partition_id;
+extern u8 sn_system_size;
+extern u8 sn_sharing_domain_size;
+extern u8 sn_region_size;
+extern void sn_flush_all_caches(long addr, long bytes);
#endif /* _ASM_IA64_SN_ARCH_H */