| 1 | /* |
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| 2 | * This file is subject to the terms and conditions of the GNU General Public |
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| 3 | * License. See the file "COPYING" in the main directory of this archive |
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| 4 | * for more details. |
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| 5 | * |
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| 6 | * SGI specific setup. |
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| 7 | * |
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| 8 | * Copyright (C) 1995 - 1997, 1999 Silcon Graphics, Inc. |
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| 9 | * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org) |
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| 10 | */ |
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| 11 | #ifndef _ASM_SN_ARCH_H |
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| 12 | #define _ASM_SN_ARCH_H |
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| 13 | |
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| 14 | #include <linux/types.h> |
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| 15 | #include <asm/sn/types.h> |
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| 16 | #ifdef CONFIG_SGI_IP27 |
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| 17 | #include <asm/sn/sn0/arch.h> |
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| 18 | #endif |
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| 19 | |
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| 20 | typedef __u64 hubreg_t; |
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| 21 | typedef __u64 nic_t; |
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| 22 | |
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| 23 | #define cputonasid(cpu) (cpu_data[(cpu)].p_nasid) |
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| 24 | #define cputoslice(cpu) (cpu_data[(cpu)].p_slice) |
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| 25 | #define makespnum(_nasid, _slice) \ |
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| 26 | (((_nasid) << CPUS_PER_NODE_SHFT) | (_slice)) |
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| 27 | |
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| 28 | #define INVALID_NASID (nasid_t)-1 |
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| 29 | #define INVALID_CNODEID (cnodeid_t)-1 |
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| 30 | #define INVALID_PNODEID (pnodeid_t)-1 |
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| 31 | #define INVALID_MODULE (moduleid_t)-1 |
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| 32 | #define INVALID_PARTID (partid_t)-1 |
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| 33 | |
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| 34 | extern nasid_t get_nasid(void); |
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| 35 | extern cnodeid_t get_cpu_cnode(cpuid_t); |
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| 36 | extern int get_cpu_slice(cpuid_t); |
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| 37 | |
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| 38 | /* |
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| 39 | * NO ONE should access these arrays directly. The only reason we refer to |
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| 40 | * them here is to avoid the procedure call that would be required in the |
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| 41 | * macros below. (Really want private data members here :-) |
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| 42 | */ |
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| 43 | extern cnodeid_t nasid_to_compact_node[MAX_NASIDS]; |
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| 44 | extern nasid_t compact_to_nasid_node[MAX_COMPACT_NODES]; |
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| 45 | |
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| 46 | /* |
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| 47 | * These macros are used by various parts of the kernel to convert |
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| 48 | * between the three different kinds of node numbering. At least some |
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| 49 | * of them may change to procedure calls in the future, but the macros |
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| 50 | * will continue to work. Don't use the arrays above directly. |
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| 51 | */ |
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| 52 | |
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| 53 | #define NASID_TO_REGION(nnode) \ |
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| 54 | ((nnode) >> \ |
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| 55 | (is_fine_dirmode() ? NASID_TO_FINEREG_SHFT : NASID_TO_COARSEREG_SHFT)) |
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| 56 | |
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| 57 | extern cnodeid_t nasid_to_compact_node[MAX_NASIDS]; |
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| 58 | extern nasid_t compact_to_nasid_node[MAX_COMPACT_NODES]; |
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| 59 | extern cnodeid_t cpuid_to_compact_node[MAXCPUS]; |
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| 60 | |
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| 61 | #define NASID_TO_COMPACT_NODEID(nnode) (nasid_to_compact_node[nnode]) |
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| 62 | #define COMPACT_TO_NASID_NODEID(cnode) (compact_to_nasid_node[cnode]) |
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| 63 | #define CPUID_TO_COMPACT_NODEID(cpu) (cpuid_to_compact_node[(cpu)]) |
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| 64 | |
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| 65 | #endif /* _ASM_SN_ARCH_H */ |
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