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 1.5 2003/12/30 01:01:40 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>
52 cam_strvis(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen)
55 /* Trim leading/trailing spaces, nulls. */
56 while (srclen > 0 && src[0] == ' ')
59 && (src[srclen-1] == ' ' || src[srclen-1] == '\0'))
62 while (srclen > 0 && dstlen > 1) {
63 u_int8_t *cur_pos = dst;
65 if (*src < 0x20 || *src >= 0x80) {
66 /* SCSI-II Specifies that these should never occur. */
67 /* non-printable character */
70 *cur_pos++ = ((*src & 0300) >> 6) + '0';
71 *cur_pos++ = ((*src & 0070) >> 3) + '0';
72 *cur_pos++ = ((*src & 0007) >> 0) + '0';
77 /* normal character */
82 dstlen -= cur_pos - dst;
89 * Compare string with pattern, returning 0 on match.
90 * Short pattern matches trailing blanks in name,
91 * wildcard '*' in pattern matches rest of name,
92 * wildcard '?' matches a single non-space character.
95 cam_strmatch(const u_int8_t *str, const u_int8_t *pattern, int str_len)
98 while (*pattern != '\0'&& str_len > 0) {
100 if (*pattern == '*') {
103 if ((*pattern != *str)
104 && (*pattern != '?' || *str == ' ')) {
111 while (str_len > 0 && *str++ == ' ')
118 cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries,
119 int entry_size, cam_quirkmatch_t *comp_func)
121 for (; num_entries > 0; num_entries--, quirk_table += entry_size) {
122 if ((*comp_func)(target, quirk_table) == 0)
123 return (quirk_table);
129 * Common calculate geometry fuction
131 * Caller should set ccg->volume_size and block_size.
132 * The extended parameter should be zero if extended translation
133 * should not be used.
136 cam_calc_geometry(struct ccb_calc_geometry *ccg, int extended)
138 uint32_t size_mb, secs_per_cylinder;
140 size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size);
141 if (size_mb > 1024 && extended) {
143 ccg->secs_per_track = 63;
146 ccg->secs_per_track = 32;
148 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
149 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
150 ccg->ccb_h.status = CAM_REQ_CMP;