sys/dev/qlxge/qls_ioctl.c

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