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Diffstat (limited to 'include/asm-mips64/sn/arch.h')
| -rw-r--r-- | include/asm-mips64/sn/arch.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/include/asm-mips64/sn/arch.h b/include/asm-mips64/sn/arch.h new file mode 100644 index 000000000..b711a28a8 --- /dev/null +++ b/include/asm-mips64/sn/arch.h @@ -0,0 +1,94 @@ +/* $Id$ + * + * 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) \ + (ASSERT(pdaindr[(cpu)].pda), (pdaindr[(cpu)].pda->p_nodeid)) +#define cputonasid(cpu) \ + (ASSERT(pdaindr[(cpu)].pda), (pdaindr[(cpu)].pda->p_nasid)) +#define cputoslice(cpu) \ + (ASSERT(pdaindr[(cpu)].pda), (pdaindr[(cpu)].pda->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); + +/* + * 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 */ + +#endif /* _ASM_SN_ARCH_H */ |