avs/sdbc/sdbc_ioctl.c

fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte/*
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * CDDL HEADER START
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte *
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * The contents of this file are subject to the terms of the
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * Common Development and Distribution License (the "License").
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * You may not use this file except in compliance with the License.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte *
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * or http://www.opensolaris.org/os/licensing.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * See the License for the specific language governing permissions
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * and limitations under the License.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte *
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * When distributing Covered Code, include this CDDL HEADER in each
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * If applicable, add the following below this CDDL HEADER, with the
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * fields enclosed by brackets "[]" replaced with your own identifying
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * information: Portions Copyright [yyyy] [name of copyright owner]
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte *
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * CDDL HEADER END
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte */
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte/*
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * Use is subject to license terms.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte */
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte/*
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte * SDBC user level ioctl interface
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte */
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <stdio.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <unistd.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <stdlib.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <sys/types.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <fcntl.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <strings.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <sys/nsctl/sd_cache.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <sys/nsctl/sd_conf.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <sys/nsctl/sdbc_ioctl.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <sys/unistat/spcs_s.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <sys/unistat/spcs_s_u.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <sys/nsctl/sv.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte#include <sys/nsctl/sv_impl.h>
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forteconst char *__sdbc_dev = "/dev/sdbc";
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Fortestatic int __sdbc_fd;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Fortestatic int
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte__sdbc_open(void)
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte{
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    int fd;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    fd = open("/dev/nsctl", O_RDONLY);
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    if (fd >= 0)
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        (void) close(fd);
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    fd = open(__sdbc_dev, O_RDONLY);
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    if (fd < 0)
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        return (-1);
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    return (__sdbc_fd = fd);
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte}
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Fortestatic void
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Fortesv_list()
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte{
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    sv_name_t svn[1];
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    sv_name_t *svn_system;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    sv_list_t svl;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    static int fd = -1;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    if (fd < 0)
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        fd = open(SV_DEVICE, O_RDONLY);
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    if (fd < 0)
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        return;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    bzero(&svl, sizeof (svl));
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    bzero(&svn[0], sizeof (svn));
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    svl.svl_names = &svn[0];
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    svl.svl_error = spcs_s_ucreate();
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    if (ioctl(fd, SVIOC_LIST, &svl) < 0)
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        return;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    svn_system = calloc(svl.svl_maxdevs, sizeof (*svn));
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    if (svn_system == NULL)
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        return;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    /* Grab the system list from the driver */
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    svl.svl_count = svl.svl_maxdevs;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    svl.svl_names = svn_system;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    (void) ioctl(fd, SVIOC_LIST, &svl);
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    free(svn_system);
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    spcs_s_ufree(&svl.svl_error);
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte}
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forteint
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Fortesdbc_ioctl(long cmd, long a0, long a1, long a2, long a3, long a4,
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    spcs_s_info_t *ustatus)
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte{
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    _sdbc_ioctl_t args;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    int rc;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    *ustatus = NULL;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    if (!__sdbc_fd && __sdbc_open() < 0)
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        return (-1);
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    switch (cmd) {
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    /*
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte     * These ioctls work on open cache descriptors. The sv_list() function
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte     * has the side-effect of re-opening all configured descriptors.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte     * Without this call, devices seem to "disappear" from the system when
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte     * certain reconfiguration operations, for example II or SNDR disable,
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte     * are done.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte     * It does rely on SV being configured, so in an STE-only environment
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte     * the disappearing will still seem to happen.
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte     */
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    case SDBC_SET_CD_HINT:
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    case SDBC_GET_CD_HINT:
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    case SDBC_STATS:
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    case SDBC_GET_CD_BLK:
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    case SDBC_INJ_IOERR:
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    case SDBC_CLR_IOERR:
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        sv_list();
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        break;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    default:
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        break;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    }
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    args.arg0 = a0;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    args.arg1 = a1;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    args.arg2 = a2;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    args.arg3 = a3;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    args.arg4 = a4;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    args.magic = _SD_MAGIC; /* for versioning */
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    args.sdbc_ustatus = spcs_s_ucreate();
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    if ((rc = ioctl(__sdbc_fd, cmd, &args)) < 0) {
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        *ustatus = args.sdbc_ustatus;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    } else {
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        spcs_s_ufree(&args.sdbc_ustatus);
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte        *ustatus = NULL;
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    }
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte    return (rc);
fcf3ce441efd61da9bb2884968af01cb7c1452ccJohn Forte}