1 /* $NetBSD: scsipi_base.h,v 1.24 2017/02/26 10:58:47 maya Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _DEV_SCSIPI_SCSIPI_BASE_H_ 33 #define _DEV_SCSIPI_SCSIPI_BASE_H_ 34 35 struct scsipi_xfer *scsipi_get_xs(struct scsipi_periph *, int); 36 void scsipi_put_xs(struct scsipi_xfer *); 37 38 static __inline struct scsipi_xfer *scsipi_make_xs_internal(struct scsipi_periph *, 39 struct scsipi_generic *, int cmdlen, u_char *data_addr, 40 int datalen, int retries, int timeout, struct buf *, 41 int flags) __unused; 42 43 static __inline struct scsipi_xfer *scsipi_make_xs_unlocked(struct scsipi_periph *, 44 struct scsipi_generic *, int cmdlen, u_char *data_addr, 45 int datalen, int retries, int timeout, struct buf *, 46 int flags) __unused; 47 48 static __inline struct scsipi_xfer *scsipi_make_xs_locked(struct scsipi_periph *, 49 struct scsipi_generic *, int cmdlen, u_char *data_addr, 50 int datalen, int retries, int timeout, struct buf *, 51 int flags) __unused; 52 53 /* 54 * Make a scsipi_xfer, and return a pointer to it. 55 */ 56 57 static __inline struct scsipi_xfer * 58 scsipi_make_xs_internal(struct scsipi_periph *periph, struct scsipi_generic *cmd, 59 int cmdlen, u_char *data_addr, int datalen, int retries, int timeout, 60 struct buf *bp, int flags) 61 { 62 struct scsipi_xfer *xs; 63 64 if ((xs = scsipi_get_xs(periph, flags)) == NULL) 65 return (NULL); 66 67 /* 68 * Fill out the scsipi_xfer structure. We don't know whose context 69 * the cmd is in, so copy it. 70 */ 71 memcpy(&xs->cmdstore, cmd, cmdlen); 72 xs->cmd = &xs->cmdstore; 73 xs->cmdlen = cmdlen; 74 xs->data = data_addr; 75 xs->datalen = datalen; 76 xs->xs_retries = retries; 77 xs->timeout = timeout; 78 xs->bp = bp; 79 80 return (xs); 81 } 82 83 static __inline struct scsipi_xfer * 84 scsipi_make_xs_unlocked(struct scsipi_periph *periph, struct scsipi_generic *cmd, 85 int cmdlen, u_char *data_addr, int datalen, int retries, int timeout, 86 struct buf *bp, int flags) 87 { 88 89 return scsipi_make_xs_internal(periph, cmd, cmdlen, data_addr, 90 datalen, retries, timeout, bp, flags & ~XS_CTL_NOSLEEP); 91 } 92 93 static __inline struct scsipi_xfer * 94 scsipi_make_xs_locked(struct scsipi_periph *periph, struct scsipi_generic *cmd, 95 int cmdlen, u_char *data_addr, int datalen, int retries, int timeout, 96 struct buf *bp, int flags) 97 { 98 99 KDASSERT(mutex_owned(chan_mtx(periph->periph_channel))); 100 return scsipi_make_xs_internal(periph, cmd, cmdlen, data_addr, 101 datalen, retries, timeout, bp, flags | XS_CTL_NOSLEEP); 102 } 103 104 #endif /* _DEV_SCSIPI_SCSIPI_BASE_H_ */ 105