FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/iwlwifi/iwl-drv.h

     /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
     /*
      * Copyright (C) 2005-2014, 2020-2021 Intel Corporation
      * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
      */
     #ifndef __iwl_drv_h__
     #define __iwl_drv_h__
     #include <linux/export.h>
     
    /* for all modules */
    #define DRV_NAME        "iwlwifi"
    
    /* 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_NS_GPL(sym, IWLWIFI)
    #else
    #define IWL_EXPORT_SYMBOL(sym)
    #endif
    
    /* max retry for init flow */
    #define IWL_MAX_INIT_RETRY 2
    
    #endif /* __iwl_drv_h__ */

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