iwl-drv.h (3502B)
1/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ 2/* 3 * Copyright (C) 2005-2014, 2020-2021 Intel Corporation 4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH 5 */ 6#ifndef __iwl_drv_h__ 7#define __iwl_drv_h__ 8#include <linux/export.h> 9 10/* for all modules */ 11#define DRV_NAME "iwlwifi" 12 13/* radio config bits (actual values from NVM definition) */ 14#define NVM_RF_CFG_DASH_MSK(x) (x & 0x3) /* bits 0-1 */ 15#define NVM_RF_CFG_STEP_MSK(x) ((x >> 2) & 0x3) /* bits 2-3 */ 16#define NVM_RF_CFG_TYPE_MSK(x) ((x >> 4) & 0x3) /* bits 4-5 */ 17#define NVM_RF_CFG_PNUM_MSK(x) ((x >> 6) & 0x3) /* bits 6-7 */ 18#define NVM_RF_CFG_TX_ANT_MSK(x) ((x >> 8) & 0xF) /* bits 8-11 */ 19#define NVM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */ 20 21#define EXT_NVM_RF_CFG_FLAVOR_MSK(x) ((x) & 0xF) 22#define EXT_NVM_RF_CFG_DASH_MSK(x) (((x) >> 4) & 0xF) 23#define EXT_NVM_RF_CFG_STEP_MSK(x) (((x) >> 8) & 0xF) 24#define EXT_NVM_RF_CFG_TYPE_MSK(x) (((x) >> 12) & 0xFFF) 25#define EXT_NVM_RF_CFG_TX_ANT_MSK(x) (((x) >> 24) & 0xF) 26#define EXT_NVM_RF_CFG_RX_ANT_MSK(x) (((x) >> 28) & 0xF) 27 28/** 29 * DOC: Driver system flows - drv component 30 * 31 * This component implements the system flows such as bus enumeration, bus 32 * removal. Bus dependent parts of system flows (such as iwl_pci_probe) are in 33 * bus specific files (transport files). This is the code that is common among 34 * different buses. 35 * 36 * This component is also in charge of managing the several implementations of 37 * the wifi flows: it will allow to have several fw API implementation. These 38 * different implementations will differ in the way they implement mac80211's 39 * handlers too. 40 41 * The init flow wrt to the drv component looks like this: 42 * 1) The bus specific component is called from module_init 43 * 2) The bus specific component registers the bus driver 44 * 3) The bus driver calls the probe function 45 * 4) The bus specific component configures the bus 46 * 5) The bus specific component calls to the drv bus agnostic part 47 * (iwl_drv_start) 48 * 6) iwl_drv_start fetches the fw ASYNC, iwl_req_fw_callback 49 * 7) iwl_req_fw_callback parses the fw file 50 * 8) iwl_req_fw_callback starts the wifi implementation to matches the fw 51 */ 52 53struct iwl_drv; 54struct iwl_trans; 55struct iwl_cfg; 56/** 57 * iwl_drv_start - start the drv 58 * 59 * @trans_ops: the ops of the transport 60 * 61 * starts the driver: fetches the firmware. This should be called by bus 62 * specific system flows implementations. For example, the bus specific probe 63 * function should do bus related operations only, and then call to this 64 * function. It returns the driver object or %NULL if an error occurred. 65 */ 66struct iwl_drv *iwl_drv_start(struct iwl_trans *trans); 67 68/** 69 * iwl_drv_stop - stop the drv 70 * 71 * @drv: 72 * 73 * Stop the driver. This should be called by bus specific system flows 74 * implementations. For example, the bus specific remove function should first 75 * call this function and then do the bus related operations only. 76 */ 77void iwl_drv_stop(struct iwl_drv *drv); 78 79/* 80 * exported symbol management 81 * 82 * The driver can be split into multiple modules, in which case some symbols 83 * must be exported for the sub-modules. However, if it's not split and 84 * everything is built-in, then we can avoid that. 85 */ 86#ifdef CONFIG_IWLWIFI_OPMODE_MODULAR 87#define IWL_EXPORT_SYMBOL(sym) EXPORT_SYMBOL_NS_GPL(sym, IWLWIFI) 88#else 89#define IWL_EXPORT_SYMBOL(sym) 90#endif 91 92/* max retry for init flow */ 93#define IWL_MAX_INIT_RETRY 2 94 95#endif /* __iwl_drv_h__ */