drivers/net/wireless/iwlwifi/iwl-trans.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2015 Intel Mobile Communications GmbH
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called COPYING.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2015 Intel Mobile Communications GmbH
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
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  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
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  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <linux/kernel.h>
  64 #include "iwl-trans.h"
  65
  66 struct iwl_trans *iwl_trans_alloc(unsigned int priv_size,
  67                                   struct device *dev,
  68                                   const struct iwl_cfg *cfg,
  69                                   const struct iwl_trans_ops *ops,
  70                                   size_t dev_cmd_headroom)
  71 {
  72         struct iwl_trans *trans;
  73 #ifdef CONFIG_LOCKDEP
  74         static struct lock_class_key __key;
  75 #endif
  76
  77         trans = kzalloc(sizeof(*trans) + priv_size, GFP_KERNEL);
  78         if (!trans)
  79                 return NULL;
  80
  81 #ifdef CONFIG_LOCKDEP
  82         lockdep_init_map(&trans->sync_cmd_lockdep_map, "sync_cmd_lockdep_map",
  83                          &__key, 0);
  84 #endif
  85
  86         trans->dev = dev;
  87         trans->cfg = cfg;
  88         trans->ops = ops;
  89         trans->dev_cmd_headroom = dev_cmd_headroom;
  90
  91         snprintf(trans->dev_cmd_pool_name, sizeof(trans->dev_cmd_pool_name),
  92                  "iwl_cmd_pool:%s", dev_name(trans->dev));
  93         trans->dev_cmd_pool =
  94                 kmem_cache_create(trans->dev_cmd_pool_name,
  95                                   sizeof(struct iwl_device_cmd)
  96                                   + trans->dev_cmd_headroom,
  97                                   sizeof(void *),
  98                                   SLAB_HWCACHE_ALIGN,
  99                                   NULL);
 100         if (!trans->dev_cmd_pool)
 101                 goto free;
 102
 103         return trans;
 104  free:
 105         kfree(trans);
 106         return NULL;
 107 }
 108
 109 void iwl_trans_free(struct iwl_trans *trans)
 110 {
 111         kmem_cache_destroy(trans->dev_cmd_pool);
 112         kfree(trans);
 113 }