xref: /OK3568_Linux_fs/kernel/drivers/net/wireless/intel/iwlwifi/iwl-drv.h (revision 4882a59341e53eb6f0b4789bf948001014eff981)

/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2008 - 2014, 2020 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <linuxwifi@intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2005 - 2014, 2020 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/

#ifndef __iwl_drv_h__
#define __iwl_drv_h__
#include <linux/export.h>

/* for all modules */
#define DRV_NAME        "iwlwifi"
#define DRV_AUTHOR	"Intel Corporation <linuxwifi@intel.com>"

/* radio config bits (actual values from NVM definition) */
#define NVM_RF_CFG_DASH_MSK(x)   (x & 0x3)         /* bits 0-1   */
#define NVM_RF_CFG_STEP_MSK(x)   ((x >> 2)  & 0x3) /* bits 2-3   */
#define NVM_RF_CFG_TYPE_MSK(x)   ((x >> 4)  & 0x3) /* bits 4-5   */
#define NVM_RF_CFG_PNUM_MSK(x)   ((x >> 6)  & 0x3) /* bits 6-7   */
#define NVM_RF_CFG_TX_ANT_MSK(x) ((x >> 8)  & 0xF) /* bits 8-11  */
#define NVM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */

#define EXT_NVM_RF_CFG_FLAVOR_MSK(x)   ((x) & 0xF)
#define EXT_NVM_RF_CFG_DASH_MSK(x)   (((x) >> 4) & 0xF)
#define EXT_NVM_RF_CFG_STEP_MSK(x)   (((x) >> 8) & 0xF)
#define EXT_NVM_RF_CFG_TYPE_MSK(x)   (((x) >> 12) & 0xFFF)
#define EXT_NVM_RF_CFG_TX_ANT_MSK(x) (((x) >> 24) & 0xF)
#define EXT_NVM_RF_CFG_RX_ANT_MSK(x) (((x) >> 28) & 0xF)

/**
 * DOC: Driver system flows - drv component
 *
 * This component implements the system flows such as bus enumeration, bus
 * removal. Bus dependent parts of system flows (such as iwl_pci_probe) are in
 * bus specific files (transport files). This is the code that is common among
 * different buses.
 *
 * This component is also in charge of managing the several implementations of
 * the wifi flows: it will allow to have several fw API implementation. These
 * different implementations will differ in the way they implement mac80211's
 * handlers too.

 * The init flow wrt to the drv component looks like this:
 * 1) The bus specific component is called from module_init
 * 2) The bus specific component registers the bus driver
 * 3) The bus driver calls the probe function
 * 4) The bus specific component configures the bus
 * 5) The bus specific component calls to the drv bus agnostic part
 *    (iwl_drv_start)
 * 6) iwl_drv_start fetches the fw ASYNC, iwl_req_fw_callback
 * 7) iwl_req_fw_callback parses the fw file
 * 8) iwl_req_fw_callback starts the wifi implementation to matches the fw
 */

struct iwl_drv;
struct iwl_trans;
struct iwl_cfg;
/**
 * iwl_drv_start - start the drv
 *
 * @trans_ops: the ops of the transport
 *
 * starts the driver: fetches the firmware. This should be called by bus
 * specific system flows implementations. For example, the bus specific probe
 * function should do bus related operations only, and then call to this
 * function. It returns the driver object or %NULL if an error occurred.
 */
struct iwl_drv *iwl_drv_start(struct iwl_trans *trans);

/**
 * iwl_drv_stop - stop the drv
 *
 * @drv:
 *
 * Stop the driver. This should be called by bus specific system flows
 * implementations. For example, the bus specific remove function should first
 * call this function and then do the bus related operations only.
 */
void iwl_drv_stop(struct iwl_drv *drv);

/*
 * exported symbol management
 *
 * The driver can be split into multiple modules, in which case some symbols
 * must be exported for the sub-modules. However, if it's not split and
 * everything is built-in, then we can avoid that.
 */
#ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
#define IWL_EXPORT_SYMBOL(sym)	EXPORT_SYMBOL_GPL(sym)
#else
#define IWL_EXPORT_SYMBOL(sym)
#endif

/* max retry for init flow */
#define IWL_MAX_INIT_RETRY 2

#endif /* __iwl_drv_h__ */