drivers/net/wireless/iwlwifi/iwl-drv.h

   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) 2008 - 2013 Intel Corporation. All rights reserved.
   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) 2005 - 2013 Intel Corporation. All rights reserved.
  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
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  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 #ifndef __iwl_drv_h__
  64 #define __iwl_drv_h__
  65 #include <linux/export.h>
  66
  67 /* for all modules */
  68 #define DRV_NAME        "iwlwifi"
  69 #define IWLWIFI_VERSION "in-tree:"
  70 #define DRV_COPYRIGHT   "Copyright(c) 2003-2013 Intel Corporation"
  71 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
  72
  73
  74 /**
  75  * DOC: Driver system flows - drv component
  76  *
  77  * This component implements the system flows such as bus enumeration, bus
  78  * removal. Bus dependent parts of system flows (such as iwl_pci_probe) are in
  79  * bus specific files (transport files). This is the code that is common among
  80  * different buses.
  81  *
  82  * This component is also in charge of managing the several implementations of
  83  * the wifi flows: it will allow to have several fw API implementation. These
  84  * different implementations will differ in the way they implement mac80211's
  85  * handlers too.
  86
  87  * The init flow wrt to the drv component looks like this:
  88  * 1) The bus specific component is called from module_init
  89  * 2) The bus specific component registers the bus driver
  90  * 3) The bus driver calls the probe function
  91  * 4) The bus specific component configures the bus
  92  * 5) The bus specific component calls to the drv bus agnostic part
  93  *    (iwl_drv_start)
  94  * 6) iwl_drv_start fetches the fw ASYNC, iwl_req_fw_callback
  95  * 7) iwl_req_fw_callback parses the fw file
  96  * 8) iwl_req_fw_callback starts the wifi implementation to matches the fw
  97  */
  98
  99 struct iwl_drv;
 100 struct iwl_trans;
 101 struct iwl_cfg;
 102 /**
 103  * iwl_drv_start - start the drv
 104  *
 105  * @trans_ops: the ops of the transport
 106  * @cfg: device specific constants / virtual functions
 107  *
 108  * starts the driver: fetches the firmware. This should be called by bus
 109  * specific system flows implementations. For example, the bus specific probe
 110  * function should do bus related operations only, and then call to this
 111  * function. It returns the driver object or %NULL if an error occured.
 112  */
 113 struct iwl_drv *iwl_drv_start(struct iwl_trans *trans,
 114                               const struct iwl_cfg *cfg);
 115
 116 /**
 117  * iwl_drv_stop - stop the drv
 118  *
 119  * @drv:
 120  *
 121  * Stop the driver. This should be called by bus specific system flows
 122  * implementations. For example, the bus specific remove function should first
 123  * call this function and then do the bus related operations only.
 124  */
 125 void iwl_drv_stop(struct iwl_drv *drv);
 126
 127 /*
 128  * exported symbol management
 129  *
 130  * The driver can be split into multiple modules, in which case some symbols
 131  * must be exported for the sub-modules. However, if it's not split and
 132  * everything is built-in, then we can avoid that.
 133  */
 134 #ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
 135 #define IWL_EXPORT_SYMBOL(sym)  EXPORT_SYMBOL_GPL(sym)
 136 #else
 137 #define IWL_EXPORT_SYMBOL(sym)
 138 #endif
 139
 140 #endif /* __iwl_drv_h__ */