| /* | |
| * 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/types.h> | |
| #include <asm/sn/types.h> | |
| #ifdef CONFIG_SGI_IP27 | |
| #include <asm/sn/sn0/arch.h> | |
| #endif | |
| typedef u64 hubreg_t; | |
| #define cputonasid(cpu) (sn_cpu_info[(cpu)].p_nasid) | |
| #define cputoslice(cpu) (sn_cpu_info[(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 */ |