| 1 | /* $NetBSD: scsipi_base.h,v 1.23 2016/11/20 15:37:19 mlelstv 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 | return scsipi_make_xs_internal(periph, cmd, cmdlen, data_addr, |
| 100 | datalen, retries, timeout, bp, flags | XS_CTL_NOSLEEP); |
| 101 | } |
| 102 | |
| 103 | #endif /* _DEV_SCSIPI_SCSIPI_BASE_H_ */ |
| 104 | |