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