summaryrefslogtreecommitdiffstats
path: root/include/asm-ia64/sn/arch.h
blob: 7c349f07916a1bd6a55db4f2833ece12c63f22b3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
/*
 * 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) 1995-1997,1999,2001-2004 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 <asm/types.h>
#include <asm/percpu.h>
#include <asm/sn/types.h>
#include <asm/sn/sn_cpuid.h>

/*
 * 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)

/*
 * 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)


/*
 * 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).
 * This is not necessarily the same as MAX_NASIDS.
 */
#define MAX_COMPACT_NODES	2048
#define CPUS_PER_NODE		4

extern void sn_flush_all_caches(long addr, long bytes);

#endif /* _ASM_IA64_SN_ARCH_H */
OpenPOWER on IntegriCloud