English
- /*
- * 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 <linux/config.h>
- #if !defined(CONFIG_SGI_IO)
- #include <asm/sn/types.h>
- #include <asm/sn/sn0/arch.h>
- #endif
- #if defined(_LANGUAGE_C) || defined(_LANGUAGE_C_PLUS_PLUS)
- #if !defined(CONFIG_SGI_IO)
- typedef u64 hubreg_t;
- typedef u64 nic_t;
- #endif
- #endif
- #ifdef CONFIG_SGI_IP27
- #define CPUS_PER_NODE 2 /* CPUs on a single hub */
- #define CPUS_PER_NODE_SHFT 1 /* Bits to shift in the node number */
- #define CPUS_PER_SUBNODE 2 /* CPUs on a single hub PI */
- #endif
- #define CNODE_NUM_CPUS(_cnode) (NODEPDA(_cnode)->node_num_cpus)
- #define CNODE_TO_CPU_BASE(_cnode) (NODEPDA(_cnode)->node_first_cpu)
- #define cputocnode(cpu)
- (cpu_data[(cpu)].p_nodeid)
- #define cputonasid(cpu)
- (cpu_data[(cpu)].p_nasid)
- #define cputoslice(cpu)
- (cpu_data[(cpu)].p_slice)
- #define makespnum(_nasid, _slice)
- (((_nasid) << CPUS_PER_NODE_SHFT) | (_slice))
- #if defined(_LANGUAGE_C) || defined(_LANGUAGE_C_PLUS_PLUS)
- #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))
- #if !defined(_STANDALONE)
- 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];
- #endif
- #if !defined(DEBUG) && (!defined(SABLE) || defined(_STANDALONE))
- #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)])
- #else
- /*
- * These functions can do type checking and fail if they need to return
- * a bad nodeid, but they're not as fast so just use 'em for debug kernels.
- */
- cnodeid_t nasid_to_compact_nodeid(nasid_t nasid);
- nasid_t compact_to_nasid_nodeid(cnodeid_t cnode);
- #define NASID_TO_COMPACT_NODEID(nnode) nasid_to_compact_nodeid(nnode)
- #define COMPACT_TO_NASID_NODEID(cnode) compact_to_nasid_nodeid(cnode)
- #define CPUID_TO_COMPACT_NODEID(cpu) (cpuid_to_compact_node[(cpu)])
- #endif
- extern int node_getlastslot(cnodeid_t);
- #endif /* _LANGUAGE_C || _LANGUAGE_C_PLUS_PLUS */
- #define SLOT_BITMASK (MAX_MEM_SLOTS - 1)
- #define SLOT_SIZE (1LL<<SLOT_SHIFT)
- #define node_getnumslots(node) (MAX_MEM_SLOTS)
- #define NODE_MAX_MEM_SIZE SLOT_SIZE * MAX_MEM_SLOTS
- /*
- * New stuff in here from Irix sys/pfdat.h.
- */
- #define SLOT_PFNSHIFT (SLOT_SHIFT - PAGE_SHIFT)
- #define PFN_NASIDSHFT (NASID_SHFT - PAGE_SHIFT)
- #define mkpfn(nasid, off) (((pfn_t)(nasid) << PFN_NASIDSHFT) | (off))
- #define slot_getbasepfn(node,slot)
- (mkpfn(COMPACT_TO_NASID_NODEID(node), slot<<SLOT_PFNSHIFT))
- #endif /* _ASM_SN_ARCH_H */
