fe2f808774
mpt(4) controller. Previously, the code assumed that multiple match patterns provided to an XPT_DEV_MATCH request were ANDed together. Instead, they are ORed. Instead, to match peripherals for a specific bus, one query needs to be performed to lookup the path ID of the bus. A second query can then be performed matching peripherals attached to that path. This approach also makes the code a bit cleaner as the returned match results do not mix bus and perphierals. Reported by: several folks MFC after: 1 week
566 lines
14 KiB
C
566 lines
14 KiB
C
/*-
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* Copyright (c) 2008 Yahoo!, Inc.
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* All rights reserved.
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* Written by: John Baldwin <jhb@FreeBSD.org>
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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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* 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
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* FOR 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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__RCSID("$FreeBSD$");
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#include <sys/param.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <camlib.h>
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#include <cam/scsi/scsi_message.h>
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#include <cam/scsi/scsi_pass.h>
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#include "mptutil.h"
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static int xptfd;
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static int
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xpt_open(void)
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{
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if (xptfd == 0)
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xptfd = open(XPT_DEVICE, O_RDWR);
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return (xptfd);
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}
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/* Fetch the path id of bus 0 for the opened mpt controller. */
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static int
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fetch_path_id(path_id_t *path_id)
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{
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struct bus_match_pattern *b;
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union ccb ccb;
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size_t bufsize;
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if (xpt_open() < 0)
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return (ENXIO);
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/* First, find the path id of bus 0 for this mpt controller. */
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bzero(&ccb, sizeof(ccb));
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ccb.ccb_h.func_code = XPT_DEV_MATCH;
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bufsize = sizeof(struct dev_match_result) * 1;
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ccb.cdm.num_matches = 0;
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ccb.cdm.match_buf_len = bufsize;
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ccb.cdm.matches = calloc(1, bufsize);
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bufsize = sizeof(struct dev_match_pattern) * 1;
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ccb.cdm.num_patterns = 1;
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ccb.cdm.pattern_buf_len = bufsize;
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ccb.cdm.patterns = calloc(1, bufsize);
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/* Match mptX bus 0. */
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ccb.cdm.patterns[0].type = DEV_MATCH_BUS;
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b = &ccb.cdm.patterns[0].pattern.bus_pattern;
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snprintf(b->dev_name, sizeof(b->dev_name), "mpt");
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b->unit_number = mpt_unit;
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b->bus_id = 0;
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b->flags = BUS_MATCH_NAME | BUS_MATCH_UNIT | BUS_MATCH_BUS_ID;
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if (ioctl(xptfd, CAMIOCOMMAND, &ccb) < 0) {
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free(ccb.cdm.matches);
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free(ccb.cdm.patterns);
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return (errno);
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}
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free(ccb.cdm.patterns);
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if (((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) ||
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(ccb.cdm.status != CAM_DEV_MATCH_LAST)) {
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warnx("fetch_path_id got CAM error %#x, CDM error %d\n",
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ccb.ccb_h.status, ccb.cdm.status);
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free(ccb.cdm.matches);
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return (EIO);
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}
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/* We should have exactly 1 match for the bus. */
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if (ccb.cdm.num_matches != 1 ||
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ccb.cdm.matches[0].type != DEV_MATCH_BUS) {
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free(ccb.cdm.matches);
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return (ENOENT);
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}
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*path_id = ccb.cdm.matches[0].result.bus_result.path_id;
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free(ccb.cdm.matches);
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return (0);
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}
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int
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mpt_query_disk(U8 VolumeBus, U8 VolumeID, struct mpt_query_disk *qd)
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{
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struct periph_match_pattern *p;
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struct periph_match_result *r;
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union ccb ccb;
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path_id_t path_id;
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size_t bufsize;
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int error, i;
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/* mpt(4) only handles devices on bus 0. */
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if (VolumeBus != 0)
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return (ENXIO);
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if (xpt_open() < 0)
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return (ENXIO);
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/* Find the path ID of bus 0. */
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error = fetch_path_id(&path_id);
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if (error)
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return (error);
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bzero(&ccb, sizeof(ccb));
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ccb.ccb_h.func_code = XPT_DEV_MATCH;
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ccb.ccb_h.path_id = CAM_XPT_PATH_ID;
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ccb.ccb_h.target_id = CAM_TARGET_WILDCARD;
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ccb.ccb_h.target_lun = CAM_LUN_WILDCARD;
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bufsize = sizeof(struct dev_match_result) * 5;
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ccb.cdm.num_matches = 0;
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ccb.cdm.match_buf_len = bufsize;
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ccb.cdm.matches = calloc(1, bufsize);
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bufsize = sizeof(struct dev_match_pattern) * 1;
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ccb.cdm.num_patterns = 1;
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ccb.cdm.pattern_buf_len = bufsize;
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ccb.cdm.patterns = calloc(1, bufsize);
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/* Look for a "da" device at the specified target and lun. */
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ccb.cdm.patterns[0].type = DEV_MATCH_PERIPH;
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p = &ccb.cdm.patterns[0].pattern.periph_pattern;
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p->path_id = path_id;
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snprintf(p->periph_name, sizeof(p->periph_name), "da");
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p->target_id = VolumeID;
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p->flags = PERIPH_MATCH_PATH | PERIPH_MATCH_NAME | PERIPH_MATCH_TARGET;
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if (ioctl(xptfd, CAMIOCOMMAND, &ccb) < 0) {
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i = errno;
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free(ccb.cdm.matches);
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free(ccb.cdm.patterns);
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return (i);
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}
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free(ccb.cdm.patterns);
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if (((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) ||
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(ccb.cdm.status != CAM_DEV_MATCH_LAST)) {
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warnx("mpt_query_disk got CAM error %#x, CDM error %d\n",
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ccb.ccb_h.status, ccb.cdm.status);
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free(ccb.cdm.matches);
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return (EIO);
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}
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/*
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* We should have exactly 1 match for the peripheral.
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* However, if we don't get a match, don't print an error
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* message and return ENOENT.
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*/
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if (ccb.cdm.num_matches == 0) {
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free(ccb.cdm.matches);
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return (ENOENT);
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}
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if (ccb.cdm.num_matches != 1) {
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warnx("mpt_query_disk got %d matches, expected 1",
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ccb.cdm.num_matches);
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free(ccb.cdm.matches);
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return (EIO);
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}
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if (ccb.cdm.matches[0].type != DEV_MATCH_PERIPH) {
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warnx("mpt_query_disk got wrong CAM match");
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free(ccb.cdm.matches);
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return (EIO);
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}
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/* Copy out the data. */
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r = &ccb.cdm.matches[1].result.periph_result;
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snprintf(qd->devname, sizeof(qd->devname), "%s%d", r->periph_name,
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r->unit_number);
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free(ccb.cdm.matches);
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return (0);
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}
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static int
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periph_is_volume(CONFIG_PAGE_IOC_2 *ioc2, struct periph_match_result *r)
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{
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CONFIG_PAGE_IOC_2_RAID_VOL *vol;
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int i;
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if (ioc2 == NULL)
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return (0);
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vol = ioc2->RaidVolume;
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for (i = 0; i < ioc2->NumActiveVolumes; vol++, i++) {
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if (vol->VolumeBus == 0 && vol->VolumeID == r->target_id)
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return (1);
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}
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return (0);
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}
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/* Much borrowed from scsireadcapacity() in src/sbin/camcontrol/camcontrol.c. */
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static int
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fetch_scsi_capacity(struct cam_device *dev, struct mpt_standalone_disk *disk)
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{
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struct scsi_read_capacity_data rcap;
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struct scsi_read_capacity_data_long rcaplong;
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union ccb *ccb;
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int error;
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ccb = cam_getccb(dev);
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if (ccb == NULL)
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return (ENOMEM);
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/* Zero the rest of the ccb. */
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bzero(&(&ccb->ccb_h)[1], sizeof(struct ccb_scsiio) -
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sizeof(struct ccb_hdr));
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scsi_read_capacity(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, &rcap,
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SSD_FULL_SIZE, 5000);
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/* Disable freezing the device queue */
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ccb->ccb_h.flags |= CAM_DEV_QFRZDIS;
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if (cam_send_ccb(dev, ccb) < 0) {
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error = errno;
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cam_freeccb(ccb);
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return (error);
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}
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if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
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cam_freeccb(ccb);
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return (EIO);
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}
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cam_freeccb(ccb);
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/*
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* A last block of 2^32-1 means that the true capacity is over 2TB,
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* and we need to issue the long READ CAPACITY to get the real
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* capacity. Otherwise, we're all set.
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*/
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if (scsi_4btoul(rcap.addr) != 0xffffffff) {
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disk->maxlba = scsi_4btoul(rcap.addr);
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return (0);
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}
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/* Zero the rest of the ccb. */
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bzero(&(&ccb->ccb_h)[1], sizeof(struct ccb_scsiio) -
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sizeof(struct ccb_hdr));
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scsi_read_capacity_16(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, 0, 0, 0,
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&rcaplong, SSD_FULL_SIZE, 5000);
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/* Disable freezing the device queue */
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ccb->ccb_h.flags |= CAM_DEV_QFRZDIS;
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if (cam_send_ccb(dev, ccb) < 0) {
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error = errno;
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cam_freeccb(ccb);
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return (error);
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}
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if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
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cam_freeccb(ccb);
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return (EIO);
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}
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cam_freeccb(ccb);
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disk->maxlba = scsi_8btou64(rcaplong.addr);
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return (0);
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}
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/* Borrowed heavily from scsi_all.c:scsi_print_inquiry(). */
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static void
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format_scsi_inquiry(struct mpt_standalone_disk *disk,
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struct scsi_inquiry_data *inq_data)
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{
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char vendor[16], product[48], revision[16], rstr[12];
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if (SID_QUAL_IS_VENDOR_UNIQUE(inq_data))
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return;
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if (SID_TYPE(inq_data) != T_DIRECT)
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return;
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if (SID_QUAL(inq_data) != SID_QUAL_LU_CONNECTED)
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return;
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cam_strvis(vendor, inq_data->vendor, sizeof(inq_data->vendor),
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sizeof(vendor));
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cam_strvis(product, inq_data->product, sizeof(inq_data->product),
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sizeof(product));
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cam_strvis(revision, inq_data->revision, sizeof(inq_data->revision),
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sizeof(revision));
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/* Hack for SATA disks, no idea how to tell speed. */
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if (strcmp(vendor, "ATA") == 0) {
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snprintf(disk->inqstring, sizeof(disk->inqstring),
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"<%s %s> SATA", product, revision);
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return;
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}
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switch (SID_ANSI_REV(inq_data)) {
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case SCSI_REV_CCS:
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strcpy(rstr, "SCSI-CCS");
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break;
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case 5:
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strcpy(rstr, "SAS");
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break;
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default:
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snprintf(rstr, sizeof (rstr), "SCSI-%d",
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SID_ANSI_REV(inq_data));
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break;
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}
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snprintf(disk->inqstring, sizeof(disk->inqstring), "<%s %s %s> %s",
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vendor, product, revision, rstr);
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}
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/* Much borrowed from scsiinquiry() in src/sbin/camcontrol/camcontrol.c. */
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static int
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fetch_scsi_inquiry(struct cam_device *dev, struct mpt_standalone_disk *disk)
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{
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struct scsi_inquiry_data *inq_buf;
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union ccb *ccb;
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int error;
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ccb = cam_getccb(dev);
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if (ccb == NULL)
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return (ENOMEM);
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/* Zero the rest of the ccb. */
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bzero(&(&ccb->ccb_h)[1], sizeof(struct ccb_scsiio) -
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sizeof(struct ccb_hdr));
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inq_buf = calloc(1, sizeof(*inq_buf));
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if (inq_buf == NULL) {
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cam_freeccb(ccb);
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return (ENOMEM);
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}
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scsi_inquiry(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, (void *)inq_buf,
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SHORT_INQUIRY_LENGTH, 0, 0, SSD_FULL_SIZE, 5000);
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/* Disable freezing the device queue */
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ccb->ccb_h.flags |= CAM_DEV_QFRZDIS;
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if (cam_send_ccb(dev, ccb) < 0) {
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error = errno;
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free(inq_buf);
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cam_freeccb(ccb);
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return (error);
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}
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|
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if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
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free(inq_buf);
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cam_freeccb(ccb);
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return (EIO);
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}
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|
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cam_freeccb(ccb);
|
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format_scsi_inquiry(disk, inq_buf);
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free(inq_buf);
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return (0);
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}
|
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|
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int
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mpt_fetch_disks(int fd, int *ndisks, struct mpt_standalone_disk **disksp)
|
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{
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CONFIG_PAGE_IOC_2 *ioc2;
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struct mpt_standalone_disk *disks;
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struct periph_match_pattern *p;
|
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struct periph_match_result *r;
|
|
struct cam_device *dev;
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|
union ccb ccb;
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|
path_id_t path_id;
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|
size_t bufsize;
|
|
u_int i;
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|
int count, error;
|
|
|
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if (xpt_open() < 0)
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|
return (ENXIO);
|
|
|
|
error = fetch_path_id(&path_id);
|
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if (error)
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|
return (error);
|
|
|
|
for (count = 100;; count+= 100) {
|
|
/* Try to fetch 'count' disks in one go. */
|
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bzero(&ccb, sizeof(ccb));
|
|
|
|
ccb.ccb_h.func_code = XPT_DEV_MATCH;
|
|
|
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bufsize = sizeof(struct dev_match_result) * (count + 1);
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ccb.cdm.num_matches = 0;
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|
ccb.cdm.match_buf_len = bufsize;
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|
ccb.cdm.matches = calloc(1, bufsize);
|
|
|
|
bufsize = sizeof(struct dev_match_pattern) * 1;
|
|
ccb.cdm.num_patterns = 1;
|
|
ccb.cdm.pattern_buf_len = bufsize;
|
|
ccb.cdm.patterns = calloc(1, bufsize);
|
|
|
|
/* Match any "da" peripherals. */
|
|
ccb.cdm.patterns[0].type = DEV_MATCH_PERIPH;
|
|
p = &ccb.cdm.patterns[0].pattern.periph_pattern;
|
|
p->path_id = path_id;
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|
snprintf(p->periph_name, sizeof(p->periph_name), "da");
|
|
p->flags = PERIPH_MATCH_PATH | PERIPH_MATCH_NAME;
|
|
|
|
if (ioctl(xptfd, CAMIOCOMMAND, &ccb) < 0) {
|
|
i = errno;
|
|
free(ccb.cdm.matches);
|
|
free(ccb.cdm.patterns);
|
|
return (i);
|
|
}
|
|
free(ccb.cdm.patterns);
|
|
|
|
/* Check for CCB errors. */
|
|
if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
|
|
free(ccb.cdm.matches);
|
|
return (EIO);
|
|
}
|
|
|
|
/* If we need a longer list, try again. */
|
|
if (ccb.cdm.status == CAM_DEV_MATCH_MORE) {
|
|
free(ccb.cdm.matches);
|
|
continue;
|
|
}
|
|
|
|
/* If we got an error, abort. */
|
|
if (ccb.cdm.status != CAM_DEV_MATCH_LAST) {
|
|
free(ccb.cdm.matches);
|
|
return (EIO);
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* Shortcut if we don't have any "da" devices. */
|
|
if (ccb.cdm.num_matches == 0) {
|
|
free(ccb.cdm.matches);
|
|
*ndisks = 0;
|
|
*disksp = NULL;
|
|
return (0);
|
|
}
|
|
|
|
/* We should have N matches, 1 for each "da" device. */
|
|
for (i = 0; i < ccb.cdm.num_matches; i++) {
|
|
if (ccb.cdm.matches[i].type != DEV_MATCH_PERIPH) {
|
|
warnx("mpt_fetch_disks got wrong CAM matches");
|
|
free(ccb.cdm.matches);
|
|
return (EIO);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Some of the "da" peripherals may be for RAID volumes, so
|
|
* fetch the IOC 2 page (list of RAID volumes) so we can
|
|
* exclude them from the list.
|
|
*/
|
|
ioc2 = mpt_read_ioc_page(fd, 2, NULL);
|
|
disks = calloc(ccb.cdm.num_matches, sizeof(*disks));
|
|
count = 0;
|
|
for (i = 0; i < ccb.cdm.num_matches; i++) {
|
|
r = &ccb.cdm.matches[i].result.periph_result;
|
|
if (periph_is_volume(ioc2, r))
|
|
continue;
|
|
disks[count].bus = 0;
|
|
disks[count].target = r->target_id;
|
|
snprintf(disks[count].devname, sizeof(disks[count].devname),
|
|
"%s%d", r->periph_name, r->unit_number);
|
|
|
|
dev = cam_open_device(disks[count].devname, O_RDWR);
|
|
if (dev != NULL) {
|
|
fetch_scsi_capacity(dev, &disks[count]);
|
|
fetch_scsi_inquiry(dev, &disks[count]);
|
|
cam_close_device(dev);
|
|
}
|
|
count++;
|
|
}
|
|
free(ccb.cdm.matches);
|
|
free(ioc2);
|
|
|
|
*ndisks = count;
|
|
*disksp = disks;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Instruct the mpt(4) device to rescan its busses to find new devices
|
|
* such as disks whose RAID physdisk page was removed or volumes that
|
|
* were created. If id is -1, the entire bus is rescanned.
|
|
* Otherwise, only devices at the specified ID are rescanned. If bus
|
|
* is -1, then all busses are scanned instead of the specified bus.
|
|
* Note that currently, only bus 0 is supported.
|
|
*/
|
|
int
|
|
mpt_rescan_bus(int bus, int id)
|
|
{
|
|
union ccb ccb;
|
|
path_id_t path_id;
|
|
int error;
|
|
|
|
/* mpt(4) only handles devices on bus 0. */
|
|
if (bus != -1 && bus != 0)
|
|
return (EINVAL);
|
|
|
|
if (xpt_open() < 0)
|
|
return (ENXIO);
|
|
|
|
error = fetch_path_id(&path_id);
|
|
if (error)
|
|
return (error);
|
|
|
|
/* Perform the actual rescan. */
|
|
bzero(&ccb, sizeof(ccb));
|
|
ccb.ccb_h.path_id = path_id;
|
|
if (id == -1) {
|
|
ccb.ccb_h.func_code = XPT_SCAN_BUS;
|
|
ccb.ccb_h.target_id = CAM_TARGET_WILDCARD;
|
|
ccb.ccb_h.target_lun = CAM_LUN_WILDCARD;
|
|
ccb.ccb_h.timeout = 5000;
|
|
} else {
|
|
ccb.ccb_h.func_code = XPT_SCAN_LUN;
|
|
ccb.ccb_h.target_id = id;
|
|
ccb.ccb_h.target_lun = 0;
|
|
}
|
|
ccb.crcn.flags = CAM_FLAG_NONE;
|
|
|
|
/* Run this at a low priority. */
|
|
ccb.ccb_h.pinfo.priority = 5;
|
|
|
|
if (ioctl(xptfd, CAMIOCOMMAND, &ccb) == -1)
|
|
return (errno);
|
|
|
|
if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
|
|
warnx("mpt_rescan_bus rescan got CAM error %#x\n",
|
|
ccb.ccb_h.status & CAM_STATUS_MASK);
|
|
return (EIO);
|
|
}
|
|
|
|
return (0);
|
|
}
|