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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #ifndef _SYS_MEMNODE_H
     27 #define	_SYS_MEMNODE_H
     28 
     29 #ifdef	__cplusplus
     30 extern "C" {
     31 #endif
     32 
     33 #ifdef	_KERNEL
     34 
     35 #include <sys/lgrp.h>
     36 
     37 
     38 /*
     39  * This file defines the mappings between physical addresses and memory
     40  * nodes. Memory nodes are defined so that the low-order bits are the
     41  * memory slice ID and the high-order bits are the SSM nodeid.
     42  */
     43 
     44 #ifndef	MAX_MEM_NODES
     45 #define	MAX_MEM_NODES	(8)
     46 #endif	/* MAX_MEM_NODES */
     47 
     48 #define	PFN_2_MEM_NODE(pfn)			\
     49 	((max_mem_nodes > 1) ? plat_pfn_to_mem_node(pfn) : 0)
     50 
     51 #define	MEM_NODE_2_LGRPHAND(mnode)		\
     52 	((max_mem_nodes > 1) ? plat_mem_node_to_lgrphand(mnode) : \
     53 	    LGRP_DEFAULT_HANDLE)
     54 
     55 /*
     56  * Platmod hooks
     57  */
     58 
     59 extern int plat_pfn_to_mem_node(pfn_t);
     60 extern int plat_lgrphand_to_mem_node(lgrp_handle_t);
     61 extern void plat_assign_lgrphand_to_mem_node(lgrp_handle_t, int);
     62 extern lgrp_handle_t plat_mem_node_to_lgrphand(int);
     63 extern void plat_slice_add(pfn_t, pfn_t);
     64 extern void plat_slice_del(pfn_t, pfn_t);
     65 
     66 #pragma	weak plat_pfn_to_mem_node
     67 #pragma	weak plat_lgrphand_to_mem_node
     68 #pragma	weak plat_mem_node_to_lgrphand
     69 #pragma	weak plat_slice_add
     70 #pragma	weak plat_slice_del
     71 
     72 struct	mem_node_conf {
     73 	int	exists;		/* only try if set, list may still be empty */
     74 	pfn_t	physbase;	/* lowest PFN in this memnode */
     75 	pfn_t	physmax;	/* highest PFN in this memnode */
     76 };
     77 
     78 struct memlist;
     79 
     80 extern void startup_build_mem_nodes(struct memlist *);
     81 extern void mem_node_add_slice(pfn_t, pfn_t);
     82 extern void mem_node_del_slice(pfn_t, pfn_t);
     83 extern int mem_node_alloc(void);
     84 extern pgcnt_t mem_node_memlist_pages(int, struct memlist *);
     85 extern void mem_node_add_range(pfn_t, pfn_t);
     86 extern void mem_node_del_range(pfn_t, pfn_t);
     87 
     88 extern int plat_mnode_xcheck(pfn_t);
     89 
     90 extern struct mem_node_conf	mem_node_config[];
     91 extern uint64_t			mem_node_physalign;
     92 extern int			mem_node_pfn_shift;
     93 extern int			max_mem_nodes;
     94 
     95 extern uint_t			lgrp_plat_node_cnt;
     96 
     97 #endif	/* _KERNEL */
     98 
     99 #ifdef	__cplusplus
    100 }
    101 #endif
    102 
    103 #endif	/* _SYS_MEMNODE_H */
    104