linux/drivers/net/wireless/intel/iwlwifi/mvm/nvm.c

// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
 * Copyright (C) 2012-2014, 2018-2019, 2021-2024 Intel Corporation
 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
 * Copyright (C) 2016-2017 Intel Deutschland GmbH
 */
#include <linux/firmware.h>
#include <linux/rtnetlink.h>
#include "iwl-trans.h"
#include "iwl-csr.h"
#include "mvm.h"
#include "iwl-nvm-utils.h"
#include "iwl-nvm-parse.h"
#include "iwl-prph.h"
#include "fw/acpi.h"

/* Default NVM size to read */
#define IWL_NVM_DEFAULT_CHUNK_SIZE …

#define NVM_WRITE_OPCODE …
#define NVM_READ_OPCODE …

/* load nvm chunk response */
enum { … };

/*
 * prepare the NVM host command w/ the pointers to the nvm buffer
 * and send it to fw
 */
static int iwl_nvm_write_chunk(struct iwl_mvm *mvm, u16 section,
			       u16 offset, u16 length, const u8 *data)
{ … }

static int iwl_nvm_read_chunk(struct iwl_mvm *mvm, u16 section,
			      u16 offset, u16 length, u8 *data)
{ … }

static int iwl_nvm_write_section(struct iwl_mvm *mvm, u16 section,
				 const u8 *data, u16 length)
{ … }

/*
 * Reads an NVM section completely.
 * NICs prior to 7000 family doesn't have a real NVM, but just read
 * section 0 which is the EEPROM. Because the EEPROM reading is unlimited
 * by uCode, we need to manually check in this case that we don't
 * overflow and try to read more than the EEPROM size.
 * For 7000 family NICs, we supply the maximal size we can read, and
 * the uCode fills the response with as much data as we can,
 * without overflowing, so no check is needed.
 */
static int iwl_nvm_read_section(struct iwl_mvm *mvm, u16 section,
				u8 *data, u32 size_read)
{ … }

static struct iwl_nvm_data *
iwl_parse_nvm_sections(struct iwl_mvm *mvm)
{ … }

/* Loads the NVM data stored in mvm->nvm_sections into the NIC */
int iwl_mvm_load_nvm_to_nic(struct iwl_mvm *mvm)
{ … }

int iwl_nvm_init(struct iwl_mvm *mvm)
{ … }

struct iwl_mcc_update_resp_v8 *
iwl_mvm_update_mcc(struct iwl_mvm *mvm, const char *alpha2,
		   enum iwl_mcc_source src_id)
{ … }

int iwl_mvm_init_mcc(struct iwl_mvm *mvm)
{ … }

void iwl_mvm_rx_chub_update_mcc(struct iwl_mvm *mvm,
				struct iwl_rx_cmd_buffer *rxb)
{ … }