17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 51ae08745Sheppo * Common Development and Distribution License (the "License"). 61ae08745Sheppo * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 211ae08745Sheppo 227c478bd9Sstevel@tonic-gate /* 23*d2365b01SPavel Tatashin * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate #ifndef _MACH_DESCRIP_H 287c478bd9Sstevel@tonic-gate #define _MACH_DESCRIP_H 297c478bd9Sstevel@tonic-gate 307c478bd9Sstevel@tonic-gate #ifdef __cplusplus 317c478bd9Sstevel@tonic-gate extern "C" { 327c478bd9Sstevel@tonic-gate #endif 337c478bd9Sstevel@tonic-gate 341ae08745Sheppo #include <sys/kstat.h> 351ae08745Sheppo #include <sys/ksynch.h> 361ae08745Sheppo #include <sys/mdesc.h> 371ae08745Sheppo 387c478bd9Sstevel@tonic-gate /* 391ae08745Sheppo * MD memory operations (memops) are of two types: 401ae08745Sheppo * buf: 411ae08745Sheppo * Buffer allocator routines used to allocate the MD buffer. 421ae08745Sheppo * Allocator must support an alignment argument. 431ae08745Sheppo * 441ae08745Sheppo * meta: 451ae08745Sheppo * Meta allocator routines to allocate meta data strcutures. 461ae08745Sheppo * These allocations are small and don't have alignment 471ae08745Sheppo * requirements. Examples, md_t handles and the machine_descrip_t 481ae08745Sheppo * structure. 497c478bd9Sstevel@tonic-gate */ 501ae08745Sheppo typedef struct machine_descrip_memops { 511ae08745Sheppo void *(*buf_allocp)(size_t size, size_t align); 521ae08745Sheppo void (*buf_freep)(void *, size_t size); 531ae08745Sheppo void *(*meta_allocp)(size_t size); 541ae08745Sheppo void (*meta_freep)(void *, size_t size); 551ae08745Sheppo } machine_descrip_memops_t; 567c478bd9Sstevel@tonic-gate 571ae08745Sheppo /* 581ae08745Sheppo * Common structure/list between kernel and mdesc driver enabling 591ae08745Sheppo * the current machine description to be retrieved or updated. 601ae08745Sheppo * 611ae08745Sheppo * Locks: 621ae08745Sheppo * The current global MD is protected by the curr_mach_descrip_lock. 631ae08745Sheppo * Each Machine description has a lock to synchronize its ref count. 641ae08745Sheppo * The Obsolete MD list is protected by the obs_list_lock. 651ae08745Sheppo */ 661ae08745Sheppo typedef struct machine_descrip_s { 671ae08745Sheppo uint64_t gen; /* Generation number for MD */ 681ae08745Sheppo kmutex_t lock; /* synchronize access to MD */ 691ae08745Sheppo void *va; /* virtual address */ 701ae08745Sheppo uint64_t size; /* size of MD */ 711ae08745Sheppo uint64_t space; /* space allocated for MD */ 721ae08745Sheppo int refcnt; /* MD ref count */ 731ae08745Sheppo struct machine_descrip_s *next; /* Next MD in list */ 741ae08745Sheppo machine_descrip_memops_t *memops; /* Memory operations for MD */ 751ae08745Sheppo } machine_descrip_t; 767c478bd9Sstevel@tonic-gate 771ae08745Sheppo /* 781ae08745Sheppo * Utility wrappers to get/fini a handle to the current MD. 791ae08745Sheppo */ 801ae08745Sheppo extern md_t *md_get_handle(void); 811ae08745Sheppo extern int md_fini_handle(md_t *); 821ae08745Sheppo extern caddr_t md_get_md_raw(md_t *); 831ae08745Sheppo extern int md_alloc_scan_dag(md_t *, mde_cookie_t, char *, char *, 841ae08745Sheppo mde_cookie_t **); 851ae08745Sheppo extern void md_free_scan_dag(md_t *, mde_cookie_t **); 86*d2365b01SPavel Tatashin extern uint64_t md_get_current_gen(void); 877c478bd9Sstevel@tonic-gate 887c478bd9Sstevel@tonic-gate #ifdef __cplusplus 897c478bd9Sstevel@tonic-gate } 907c478bd9Sstevel@tonic-gate #endif 917c478bd9Sstevel@tonic-gate 927c478bd9Sstevel@tonic-gate #endif /* _MACH_DESCRIP_H */ 93