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/* $Id$
*
* 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 IP27 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>
#include <asm/sn/sn0/arch.h>
#if defined(_LANGUAGE_C) || defined(_LANGUAGE_C_PLUS_PLUS)
typedef u64 hubreg_t;
typedef u64 nic_t;
#endif
#define CPUS_PER_NODE 2 /* CPUs on a single hub */
#define CPUS_PER_NODE_SHFT 1 /* Bits to shift in the node number */
#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);
/*
* 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(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)
#if SABLE
#define node_getnumslots(node) (1)
#define NODE_MAX_MEM_SIZE SLOT_SIZE * 1
#else
#define node_getnumslots(node) (MAX_MEM_SLOTS)
#define NODE_MAX_MEM_SIZE SLOT_SIZE * MAX_MEM_SLOTS
#endif /* SABLE */
/*
* 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 */
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