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bfc0ed73e0
Revert commitdfdfe4be18("wifi: iwlwifi: remove retry loops in start"), it turns out that there's an issue with the PNVM load notification from firmware not getting processed, that this patch has been somewhat successfully papering over. Since this is being reported, revert the loop removal for now. We will later at least clean this up to only attempt to retry if there was a timeout, but currently we don't even bubble up the failure reason to the correct layer, only returning NULL. Fixes:dfdfe4be18("wifi: iwlwifi: remove retry loops in start") Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Link: https://patch.msgid.link/20241022092212.4aa82a558a00.Ibdeff9c8f0d608bc97fc42024392ae763b6937b7@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
109 lines
3.8 KiB
C
109 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
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/*
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* Copyright (C) 2005-2014, 2020-2021, 2023 Intel Corporation
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* Copyright (C) 2013-2014 Intel Mobile Communications GmbH
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*/
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#ifndef __iwl_drv_h__
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#define __iwl_drv_h__
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#include <linux/export.h>
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#include <kunit/visibility.h>
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/* for all modules */
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#define DRV_NAME "iwlwifi"
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/* radio config bits (actual values from NVM definition) */
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#define NVM_RF_CFG_DASH_MSK(x) (x & 0x3) /* bits 0-1 */
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#define NVM_RF_CFG_STEP_MSK(x) ((x >> 2) & 0x3) /* bits 2-3 */
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#define NVM_RF_CFG_TYPE_MSK(x) ((x >> 4) & 0x3) /* bits 4-5 */
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#define NVM_RF_CFG_PNUM_MSK(x) ((x >> 6) & 0x3) /* bits 6-7 */
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#define NVM_RF_CFG_TX_ANT_MSK(x) ((x >> 8) & 0xF) /* bits 8-11 */
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#define NVM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */
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#define EXT_NVM_RF_CFG_FLAVOR_MSK(x) ((x) & 0xF)
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#define EXT_NVM_RF_CFG_DASH_MSK(x) (((x) >> 4) & 0xF)
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#define EXT_NVM_RF_CFG_STEP_MSK(x) (((x) >> 8) & 0xF)
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#define EXT_NVM_RF_CFG_TYPE_MSK(x) (((x) >> 12) & 0xFFF)
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#define EXT_NVM_RF_CFG_TX_ANT_MSK(x) (((x) >> 24) & 0xF)
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#define EXT_NVM_RF_CFG_RX_ANT_MSK(x) (((x) >> 28) & 0xF)
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/**
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* DOC: Driver system flows - drv component
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*
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* This component implements the system flows such as bus enumeration, bus
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* removal. Bus dependent parts of system flows (such as iwl_pci_probe) are in
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* bus specific files (transport files). This is the code that is common among
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* different buses.
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*
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* This component is also in charge of managing the several implementations of
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* the wifi flows: it will allow to have several fw API implementation. These
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* different implementations will differ in the way they implement mac80211's
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* handlers too.
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* The init flow wrt to the drv component looks like this:
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* 1) The bus specific component is called from module_init
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* 2) The bus specific component registers the bus driver
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* 3) The bus driver calls the probe function
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* 4) The bus specific component configures the bus
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* 5) The bus specific component calls to the drv bus agnostic part
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* (iwl_drv_start)
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* 6) iwl_drv_start fetches the fw ASYNC, iwl_req_fw_callback
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* 7) iwl_req_fw_callback parses the fw file
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* 8) iwl_req_fw_callback starts the wifi implementation to matches the fw
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*/
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struct iwl_drv;
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struct iwl_trans;
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struct iwl_cfg;
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/**
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* iwl_drv_start - start the drv
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*
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* @trans: the transport
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*
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* starts the driver: fetches the firmware. This should be called by bus
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* specific system flows implementations. For example, the bus specific probe
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* function should do bus related operations only, and then call to this
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* function. It returns the driver object or %NULL if an error occurred.
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*/
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struct iwl_drv *iwl_drv_start(struct iwl_trans *trans);
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/**
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* iwl_drv_stop - stop the drv
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*
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* @drv:
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*
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* Stop the driver. This should be called by bus specific system flows
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* implementations. For example, the bus specific remove function should first
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* call this function and then do the bus related operations only.
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*/
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void iwl_drv_stop(struct iwl_drv *drv);
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/*
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* exported symbol management
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*
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* The driver can be split into multiple modules, in which case some symbols
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* must be exported for the sub-modules. However, if it's not split and
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* everything is built-in, then we can avoid that.
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*/
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#ifdef CONFIG_IWLWIFI_OPMODE_MODULAR
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#define IWL_EXPORT_SYMBOL(sym) EXPORT_SYMBOL_NS_GPL(sym, IWLWIFI)
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#else
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#define IWL_EXPORT_SYMBOL(sym)
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#endif
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#if IS_ENABLED(CONFIG_IWLWIFI_KUNIT_TESTS)
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#define EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(sym) EXPORT_SYMBOL_IF_KUNIT(sym)
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#define VISIBLE_IF_IWLWIFI_KUNIT
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#else
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#define EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(sym)
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#define VISIBLE_IF_IWLWIFI_KUNIT static
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#endif
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/* max retry for init flow */
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#define IWL_MAX_INIT_RETRY 2
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#define FW_NAME_PRE_BUFSIZE 64
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struct iwl_trans;
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const char *iwl_drv_get_fwname_pre(struct iwl_trans *trans, char *buf);
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#endif /* __iwl_drv_h__ */
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