400 lines
11 KiB
C
400 lines
11 KiB
C
/*-
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* Generic utility routines for the Common Access Method layer.
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*
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* Copyright (c) 1997 Justin T. Gibbs.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#ifdef _KERNEL
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#else /* _KERNEL */
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#include <stdlib.h>
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#include <stdio.h>
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#endif /* _KERNEL */
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/scsi/scsi_all.h>
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#include <sys/sbuf.h>
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#ifdef _KERNEL
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#include <sys/libkern.h>
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#include <cam/cam_xpt.h>
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#endif
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static int camstatusentrycomp(const void *key, const void *member);
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const struct cam_status_entry cam_status_table[] = {
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{ CAM_REQ_INPROG, "CCB request is in progress" },
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{ CAM_REQ_CMP, "CCB request completed without error" },
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{ CAM_REQ_ABORTED, "CCB request aborted by the host" },
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{ CAM_UA_ABORT, "Unable to abort CCB request" },
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{ CAM_REQ_CMP_ERR, "CCB request completed with an error" },
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{ CAM_BUSY, "CAM subsytem is busy" },
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{ CAM_REQ_INVALID, "CCB request was invalid" },
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{ CAM_PATH_INVALID, "Supplied Path ID is invalid" },
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{ CAM_DEV_NOT_THERE, "Device Not Present" },
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{ CAM_UA_TERMIO, "Unable to terminate I/O CCB request" },
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{ CAM_SEL_TIMEOUT, "Selection Timeout" },
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{ CAM_CMD_TIMEOUT, "Command timeout" },
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{ CAM_SCSI_STATUS_ERROR, "SCSI Status Error" },
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{ CAM_MSG_REJECT_REC, "Message Reject Reveived" },
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{ CAM_SCSI_BUS_RESET, "SCSI Bus Reset Sent/Received" },
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{ CAM_UNCOR_PARITY, "Uncorrectable parity/CRC error" },
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{ CAM_AUTOSENSE_FAIL, "Auto-Sense Retrieval Failed" },
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{ CAM_NO_HBA, "No HBA Detected" },
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{ CAM_DATA_RUN_ERR, "Data Overrun error" },
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{ CAM_UNEXP_BUSFREE, "Unexpected Bus Free" },
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{ CAM_SEQUENCE_FAIL, "Target Bus Phase Sequence Failure" },
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{ CAM_CCB_LEN_ERR, "CCB length supplied is inadequate" },
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{ CAM_PROVIDE_FAIL, "Unable to provide requested capability" },
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{ CAM_BDR_SENT, "SCSI BDR Message Sent" },
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{ CAM_REQ_TERMIO, "CCB request terminated by the host" },
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{ CAM_UNREC_HBA_ERROR, "Unrecoverable Host Bus Adapter Error" },
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{ CAM_REQ_TOO_BIG, "The request was too large for this host" },
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{ CAM_REQUEUE_REQ, "Unconditionally Re-queue Request", },
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{ CAM_IDE, "Initiator Detected Error Message Received" },
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{ CAM_RESRC_UNAVAIL, "Resource Unavailable" },
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{ CAM_UNACKED_EVENT, "Unacknowledged Event by Host" },
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{ CAM_MESSAGE_RECV, "Message Received in Host Target Mode" },
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{ CAM_INVALID_CDB, "Invalid CDB received in Host Target Mode" },
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{ CAM_LUN_INVALID, "Invalid Lun" },
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{ CAM_TID_INVALID, "Invalid Target ID" },
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{ CAM_FUNC_NOTAVAIL, "Function Not Available" },
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{ CAM_NO_NEXUS, "Nexus Not Established" },
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{ CAM_IID_INVALID, "Invalid Initiator ID" },
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{ CAM_CDB_RECVD, "CDB Received" },
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{ CAM_LUN_ALRDY_ENA, "LUN Already Enabled for Target Mode" },
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{ CAM_SCSI_BUSY, "SCSI Bus Busy" },
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};
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const int num_cam_status_entries =
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sizeof(cam_status_table)/sizeof(*cam_status_table);
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#ifdef _KERNEL
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SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD, 0, "CAM Subsystem");
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#endif
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void
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cam_strvis(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen)
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{
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/* Trim leading/trailing spaces, nulls. */
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while (srclen > 0 && src[0] == ' ')
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src++, srclen--;
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while (srclen > 0
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&& (src[srclen-1] == ' ' || src[srclen-1] == '\0'))
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srclen--;
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while (srclen > 0 && dstlen > 1) {
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u_int8_t *cur_pos = dst;
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if (*src < 0x20 || *src >= 0x80) {
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/* SCSI-II Specifies that these should never occur. */
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/* non-printable character */
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if (dstlen > 4) {
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*cur_pos++ = '\\';
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*cur_pos++ = ((*src & 0300) >> 6) + '0';
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*cur_pos++ = ((*src & 0070) >> 3) + '0';
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*cur_pos++ = ((*src & 0007) >> 0) + '0';
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} else {
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*cur_pos++ = '?';
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}
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} else {
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/* normal character */
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*cur_pos++ = *src;
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}
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src++;
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srclen--;
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dstlen -= cur_pos - dst;
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dst = cur_pos;
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}
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*dst = '\0';
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}
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/*
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* Compare string with pattern, returning 0 on match.
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* Short pattern matches trailing blanks in name,
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* wildcard '*' in pattern matches rest of name,
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* wildcard '?' matches a single non-space character.
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*/
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int
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cam_strmatch(const u_int8_t *str, const u_int8_t *pattern, int str_len)
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{
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while (*pattern != '\0'&& str_len > 0) {
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if (*pattern == '*') {
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return (0);
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}
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if ((*pattern != *str)
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&& (*pattern != '?' || *str == ' ')) {
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return (1);
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}
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pattern++;
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str++;
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str_len--;
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}
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while (str_len > 0 && *str++ == ' ')
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str_len--;
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return (str_len);
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}
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caddr_t
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cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries,
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int entry_size, cam_quirkmatch_t *comp_func)
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{
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for (; num_entries > 0; num_entries--, quirk_table += entry_size) {
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if ((*comp_func)(target, quirk_table) == 0)
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return (quirk_table);
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}
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return (NULL);
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}
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const struct cam_status_entry*
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cam_fetch_status_entry(cam_status status)
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{
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status &= CAM_STATUS_MASK;
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return (bsearch(&status, &cam_status_table,
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num_cam_status_entries,
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sizeof(*cam_status_table),
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camstatusentrycomp));
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}
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static int
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camstatusentrycomp(const void *key, const void *member)
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{
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cam_status status;
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const struct cam_status_entry *table_entry;
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status = *(const cam_status *)key;
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table_entry = (const struct cam_status_entry *)member;
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return (status - table_entry->status_code);
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}
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#ifdef _KERNEL
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char *
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cam_error_string(union ccb *ccb, char *str, int str_len,
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cam_error_string_flags flags,
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cam_error_proto_flags proto_flags)
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#else /* !_KERNEL */
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char *
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cam_error_string(struct cam_device *device, union ccb *ccb, char *str,
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int str_len, cam_error_string_flags flags,
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cam_error_proto_flags proto_flags)
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#endif /* _KERNEL/!_KERNEL */
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{
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char path_str[64];
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struct sbuf sb;
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if ((ccb == NULL)
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|| (str == NULL)
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|| (str_len <= 0))
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return(NULL);
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if (flags == CAM_ESF_NONE)
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return(NULL);
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switch (ccb->ccb_h.func_code) {
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case XPT_SCSI_IO:
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switch (proto_flags & CAM_EPF_LEVEL_MASK) {
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case CAM_EPF_NONE:
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break;
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case CAM_EPF_ALL:
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case CAM_EPF_NORMAL:
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proto_flags |= CAM_ESF_PRINT_SENSE;
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/* FALLTHROUGH */
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case CAM_EPF_MINIMAL:
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proto_flags |= CAM_ESF_PRINT_STATUS;
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/* FALLTHROUGH */
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default:
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break;
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}
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break;
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default:
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break;
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}
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#ifdef _KERNEL
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xpt_path_string(ccb->csio.ccb_h.path, path_str, sizeof(path_str));
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#else /* !_KERNEL */
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cam_path_string(device, path_str, sizeof(path_str));
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#endif /* _KERNEL/!_KERNEL */
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sbuf_new(&sb, str, str_len, 0);
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if (flags & CAM_ESF_COMMAND) {
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sbuf_cat(&sb, path_str);
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switch (ccb->ccb_h.func_code) {
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case XPT_SCSI_IO:
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#ifdef _KERNEL
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scsi_command_string(&ccb->csio, &sb);
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#else /* !_KERNEL */
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scsi_command_string(device, &ccb->csio, &sb);
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#endif /* _KERNEL/!_KERNEL */
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sbuf_printf(&sb, "\n");
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break;
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default:
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break;
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}
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}
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if (flags & CAM_ESF_CAM_STATUS) {
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cam_status status;
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const struct cam_status_entry *entry;
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sbuf_cat(&sb, path_str);
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status = ccb->ccb_h.status & CAM_STATUS_MASK;
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entry = cam_fetch_status_entry(status);
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if (entry == NULL)
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sbuf_printf(&sb, "CAM Status: Unknown (%#x)\n",
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ccb->ccb_h.status);
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else
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sbuf_printf(&sb, "CAM Status: %s\n",
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entry->status_text);
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}
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if (flags & CAM_ESF_PROTO_STATUS) {
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switch (ccb->ccb_h.func_code) {
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case XPT_SCSI_IO:
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if ((ccb->ccb_h.status & CAM_STATUS_MASK) !=
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CAM_SCSI_STATUS_ERROR)
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break;
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if (proto_flags & CAM_ESF_PRINT_STATUS) {
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sbuf_cat(&sb, path_str);
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/*
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* Print out the SCSI status byte as long as
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* the user wants some protocol output.
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*/
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sbuf_printf(&sb, "SCSI Status: %s\n",
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scsi_status_string(&ccb->csio));
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}
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if ((proto_flags & CAM_ESF_PRINT_SENSE)
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&& (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
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&& (ccb->ccb_h.status & CAM_AUTOSNS_VALID)) {
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#ifdef _KERNEL
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scsi_sense_sbuf(&ccb->csio, &sb,
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SSS_FLAG_NONE);
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#else /* !_KERNEL */
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scsi_sense_sbuf(device, &ccb->csio, &sb,
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SSS_FLAG_NONE);
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#endif /* _KERNEL/!_KERNEL */
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}
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break;
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default:
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break;
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}
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}
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sbuf_finish(&sb);
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return(sbuf_data(&sb));
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}
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#ifdef _KERNEL
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void
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cam_error_print(union ccb *ccb, cam_error_string_flags flags,
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cam_error_proto_flags proto_flags)
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{
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char str[512];
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printf("%s", cam_error_string(ccb, str, sizeof(str), flags,
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proto_flags));
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}
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#else /* !_KERNEL */
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void
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cam_error_print(struct cam_device *device, union ccb *ccb,
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cam_error_string_flags flags, cam_error_proto_flags proto_flags,
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FILE *ofile)
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{
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char str[512];
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if ((device == NULL) || (ccb == NULL) || (ofile == NULL))
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return;
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fprintf(ofile, "%s", cam_error_string(device, ccb, str, sizeof(str),
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flags, proto_flags));
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}
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#endif /* _KERNEL/!_KERNEL */
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/*
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* Common calculate geometry fuction
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*
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* Caller should set ccg->volume_size and block_size.
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* The extended parameter should be zero if extended translation
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* should not be used.
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*/
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void
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cam_calc_geometry(struct ccb_calc_geometry *ccg, int extended)
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{
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uint32_t size_mb, secs_per_cylinder;
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if (ccg->block_size == 0) {
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ccg->ccb_h.status = CAM_REQ_CMP_ERR;
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return;
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}
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size_mb = (1024L * 1024L) / ccg->block_size;
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if (size_mb == 0) {
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ccg->ccb_h.status = CAM_REQ_CMP_ERR;
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return;
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}
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size_mb = ccg->volume_size / size_mb;
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if (size_mb > 1024 && extended) {
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ccg->heads = 255;
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ccg->secs_per_track = 63;
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} else {
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ccg->heads = 64;
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ccg->secs_per_track = 32;
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}
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secs_per_cylinder = ccg->heads * ccg->secs_per_track;
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if (secs_per_cylinder == 0) {
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ccg->ccb_h.status = CAM_REQ_CMP_ERR;
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return;
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}
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ccg->cylinders = ccg->volume_size / secs_per_cylinder;
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ccg->ccb_h.status = CAM_REQ_CMP;
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}
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