usr/src/uts/i86pc/sys/memnode.h

   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 #define MAX_MEM_NODES_PER_LGROUP        3
  45 #ifndef MAX_MEM_NODES
  46 #define MAX_MEM_NODES                   (8 * MAX_MEM_NODES_PER_LGROUP)
  47 #endif  /* MAX_MEM_NODES */
  48
  49 #define PFN_2_MEM_NODE(pfn)                     \
  50         ((max_mem_nodes > 1) ? plat_pfn_to_mem_node(pfn) : 0)
  51
  52 #define MEM_NODE_2_LGRPHAND(mnode)              \
  53         ((max_mem_nodes > 1) ? plat_mem_node_to_lgrphand(mnode) : \
  54             LGRP_DEFAULT_HANDLE)
  55
  56 /*
  57  * Platmod hooks
  58  */
  59
  60 extern int plat_pfn_to_mem_node(pfn_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_mem_node_to_lgrphand
  68 #pragma weak plat_slice_add
  69 #pragma weak plat_slice_del
  70
  71 struct  mem_node_conf {
  72         int     exists;         /* only try if set, list may still be empty */
  73         pfn_t   physbase;       /* lowest PFN in this memnode */
  74         pfn_t   physmax;        /* highest PFN in this memnode */
  75 };
  76
  77 struct memlist;
  78
  79 extern void startup_build_mem_nodes(struct memlist *);
  80 extern void mem_node_add_slice(pfn_t, pfn_t);
  81 extern void mem_node_del_slice(pfn_t, pfn_t);
  82 extern int mem_node_alloc(void);
  83 extern pgcnt_t mem_node_memlist_pages(int, struct memlist *);
  84 extern void mem_node_add_range(pfn_t, pfn_t);
  85 extern void mem_node_del_range(pfn_t, pfn_t);
  86
  87 extern int plat_mnode_xcheck(pfn_t);
  88
  89 extern struct mem_node_conf     mem_node_config[];
  90 extern uint64_t                 mem_node_physalign;
  91 extern int                      mem_node_pfn_shift;
  92 extern int                      max_mem_nodes;
  93
  94 extern uint_t                   lgrp_plat_node_cnt;
  95
  96 #endif  /* _KERNEL */
  97
  98 #ifdef  __cplusplus
  99 }
 100 #endif
 101
 102 #endif  /* _SYS_MEMNODE_H */