sys/dev/qlxge/qls_ioctl.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2013-2014 Qlogic Corporation
   5  * All rights reserved.
   6  *
   7  *  Redistribution and use in source and binary forms, with or without
   8  *  modification, are permitted provided that the following conditions
   9  *  are met:
  10  *
  11  *  1. Redistributions of source code must retain the above copyright
  12  *     notice, this list of conditions and the following disclaimer.
  13  *  2. Redistributions in binary form must reproduce the above copyright
  14  *     notice, this list of conditions and the following disclaimer in the
  15  *     documentation and/or other materials provided with the distribution.
  16  *
  17  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  18  *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  21  *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  22  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  23  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  25  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  26  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  27  *  POSSIBILITY OF SUCH DAMAGE.
  28  */
  29 /*
  30  * File: qls_ioctl.c
  31  * Author : David C Somayajulu, Qlogic Corporation, Aliso Viejo, CA 92656.
  32  */
  33 #include <sys/cdefs.h>
  34 __FBSDID("$FreeBSD$");
  35
  36 #include "qls_os.h"
  37 #include "qls_hw.h"
  38 #include "qls_def.h"
  39 #include "qls_inline.h"
  40 #include "qls_glbl.h"
  41 #include "qls_ioctl.h"
  42 #include "qls_dump.h"
  43 extern qls_mpi_coredump_t ql_mpi_coredump;
  44
  45 static int qls_eioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
  46                 struct thread *td);
  47
  48 static struct cdevsw qla_cdevsw = {
  49         .d_version = D_VERSION,
  50         .d_ioctl = qls_eioctl,
  51         .d_name = "qlxge",
  52 };
  53
  54 int
  55 qls_make_cdev(qla_host_t *ha)
  56 {
  57         ha->ioctl_dev = make_dev(&qla_cdevsw,
  58                                 ha->ifp->if_dunit,
  59                                 UID_ROOT,
  60                                 GID_WHEEL,
  61                                 0600,
  62                                 "%s",
  63                                 if_name(ha->ifp));
  64
  65         if (ha->ioctl_dev == NULL)
  66                 return (-1);
  67
  68         ha->ioctl_dev->si_drv1 = ha;
  69
  70         return (0);
  71 }
  72
  73 void
  74 qls_del_cdev(qla_host_t *ha)
  75 {
  76         if (ha->ioctl_dev != NULL)
  77                 destroy_dev(ha->ioctl_dev);
  78         return;
  79 }
  80
  81 static int
  82 qls_eioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
  83         struct thread *td)
  84 {
  85         qla_host_t *ha;
  86         int rval = 0;
  87         device_t pci_dev;
  88
  89         qls_mpi_dump_t *mpi_dump;
  90
  91         if ((ha = (qla_host_t *)dev->si_drv1) == NULL)
  92                 return ENXIO;
  93
  94         pci_dev= ha->pci_dev;
  95
  96         switch(cmd) {
  97         case QLA_MPI_DUMP:
  98                 mpi_dump = (qls_mpi_dump_t *)data;
  99
 100                 if (mpi_dump->size == 0) {
 101                         mpi_dump->size = sizeof (qls_mpi_coredump_t);
 102                 } else {
 103                         if ((mpi_dump->size != sizeof (qls_mpi_coredump_t)) ||
 104                                 (mpi_dump->dbuf == NULL))
 105                                 rval = EINVAL;
 106                         else {
 107                                 if (qls_mpi_core_dump(ha) == 0) {
 108                                         rval = copyout(&ql_mpi_coredump,
 109                                                         mpi_dump->dbuf,
 110                                                         mpi_dump->size);
 111                                 } else
 112                                         rval = ENXIO;
 113
 114                                 if (rval) {
 115                                         device_printf(ha->pci_dev,
 116                                                 "%s: mpidump failed[%d]\n",
 117                                                 __func__, rval);
 118                                 }
 119                         }
 120                 }
 121
 122                 break;
 123         default:
 124                 break;
 125         }
 126
 127         return rval;
 128 }