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 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _NSC_DISK_H 27 #define _NSC_DISK_H 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 #ifndef __NSC_GEN__ 34 Error: Illegal #include - private file. 35 #endif 36 37 #include <sys/types.h> 38 #include <sys/file.h> 39 #include <sys/uio.h> 40 41 #include <sys/nsctl/nsc_dev.h> 42 #include <sys/nsctl/nsctl.h> 43 44 #define _NSC_DBUF_NVEC 5 45 46 /* 47 * Buffer structure for disk I/O. 48 */ 49 50 typedef struct nsc_dbuf_s { 51 nsc_buf_t db_buf; /* Generic buffer header */ 52 void (*db_disc)(); /* Disconnect callback */ 53 uio_t db_uio; /* Scatter/gather list */ 54 iovec_t db_iov[_NSC_DBUF_NVEC]; /* Data transfer address */ 55 char *db_addr; /* Address of data buffer */ 56 nsc_vec_t db_bvec[2]; /* Pointers to data */ 57 struct nsc_dbuf_s *db_next; /* Link to next buffer */ 58 nsc_size_t db_maxfbas; /* Maxfbas value for the device */ 59 } nsc_dbuf_t; 60 61 62 #define db_fd db_buf.sb_fd 63 #define db_pos db_buf.sb_pos 64 #define db_len db_buf.sb_len 65 #define db_flag db_buf.sb_flag 66 #define db_error db_buf.sb_error 67 #define db_vec db_buf.sb_vec 68 69 70 /* 71 * Sector Mode definitions. 72 */ 73 74 #define FPOS_TO_FBA(u) ((nsc_off_t)(FBA_NUM((u)->uio_loffset))) 75 #define FPOS_TO_OFF(u) ((nsc_off_t)(FBA_OFF((u)->uio_loffset))) 76 #define SET_FPOS(u, f) ((u)->uio_loffset = (offset_t)FBA_SIZE((offset_t)f)) 77 78 79 #ifdef __cplusplus 80 } 81 #endif 82 83 #endif /* _NSC_DISK_H */ 84