2 * Generic utility routines for the Common Access Method layer.
4 * Copyright (c) 1997 Justin T. Gibbs.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification, immediately at the beginning of the file.
13 * 2. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * $FreeBSD: src/sys/cam/cam.c,v 1.3 1999/08/28 00:40:38 peter Exp $
29 * $DragonFly: src/sys/bus/cam/cam.c,v 1.6 2004/02/16 19:43:27 dillon Exp $
31 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/sysctl.h>
43 #include "scsi/scsi_all.h"
47 #include <sys/libkern.h>
53 SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD, 0, "CAM Subsystem");
58 cam_strvis(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen)
61 /* Trim leading/trailing spaces, nulls. */
62 while (srclen > 0 && src[0] == ' ')
65 && (src[srclen-1] == ' ' || src[srclen-1] == '\0'))
68 while (srclen > 0 && dstlen > 1) {
69 u_int8_t *cur_pos = dst;
71 if (*src < 0x20 || *src >= 0x80) {
72 /* SCSI-II Specifies that these should never occur. */
73 /* non-printable character */
76 *cur_pos++ = ((*src & 0300) >> 6) + '0';
77 *cur_pos++ = ((*src & 0070) >> 3) + '0';
78 *cur_pos++ = ((*src & 0007) >> 0) + '0';
83 /* normal character */
88 dstlen -= cur_pos - dst;
95 * Compare string with pattern, returning 0 on match.
96 * Short pattern matches trailing blanks in name,
97 * wildcard '*' in pattern matches rest of name,
98 * wildcard '?' matches a single non-space character.
101 cam_strmatch(const u_int8_t *str, const u_int8_t *pattern, int str_len)
104 while (*pattern != '\0'&& str_len > 0) {
106 if (*pattern == '*') {
109 if ((*pattern != *str)
110 && (*pattern != '?' || *str == ' ')) {
117 while (str_len > 0 && *str++ == ' ')
124 cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries,
125 int entry_size, cam_quirkmatch_t *comp_func)
127 for (; num_entries > 0; num_entries--, quirk_table += entry_size) {
128 if ((*comp_func)(target, quirk_table) == 0)
129 return (quirk_table);
135 * Common calculate geometry fuction
137 * Caller should set ccg->volume_size and block_size.
138 * The extended parameter should be zero if extended translation
139 * should not be used.
142 cam_calc_geometry(struct ccb_calc_geometry *ccg, int extended)
144 uint32_t size_mb, secs_per_cylinder;
146 size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size);
147 if (size_mb > 1024 && extended) {
149 ccg->secs_per_track = 63;
152 ccg->secs_per_track = 32;
154 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
155 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
156 ccg->ccb_h.status = CAM_REQ_CMP;