linux/drivers/net/wireless/intel/iwlwifi/fw/acpi.c

// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
 * Copyright (C) 2017 Intel Deutschland GmbH
 * Copyright (C) 2019-2024 Intel Corporation
 */
#include <linux/uuid.h>
#include "iwl-drv.h"
#include "iwl-debug.h"
#include "acpi.h"
#include "fw/runtime.h"

const guid_t iwl_guid = …;

static const size_t acpi_dsm_size[DSM_FUNC_NUM_FUNCS] = …;

static int iwl_acpi_get_handle(struct device *dev, acpi_string method,
			       acpi_handle *ret_handle)
{ … }

static void *iwl_acpi_get_object(struct device *dev, acpi_string method)
{ … }

/*
 * Generic function for evaluating a method defined in the device specific
 * method (DSM) interface. The returned acpi object must be freed by calling
 * function.
 */
static void *iwl_acpi_get_dsm_object(struct device *dev, int rev, int func,
				     union acpi_object *args,
				     const guid_t *guid)
{ … }

/*
 * Generic function to evaluate a DSM with no arguments
 * and an integer return value,
 * (as an integer object or inside a buffer object),
 * verify and assign the value in the "value" parameter.
 * return 0 in success and the appropriate errno otherwise.
 */
static int iwl_acpi_get_dsm_integer(struct device *dev, int rev, int func,
				    const guid_t *guid, u64 *value,
				    size_t expected_size)
{ … }

/*
 * This function receives a DSM function number, calculates its expected size
 * according to Intel BIOS spec, and fills in the value in a 32-bit field.
 * In case the expected size is smaller than 32-bit, padding will be added.
 */
int iwl_acpi_get_dsm(struct iwl_fw_runtime *fwrt,
		     enum iwl_dsm_funcs func, u32 *value)
{ … }

static union acpi_object *
iwl_acpi_get_wifi_pkg_range(struct device *dev,
			    union acpi_object *data,
			    int min_data_size,
			    int max_data_size,
			    int *tbl_rev)
{ … }

static union acpi_object *
iwl_acpi_get_wifi_pkg(struct device *dev,
		      union acpi_object *data,
		      int data_size, int *tbl_rev)
{ … }

int iwl_acpi_get_tas_table(struct iwl_fw_runtime *fwrt,
			   struct iwl_tas_data *tas_data)
{ … }

int iwl_acpi_get_mcc(struct iwl_fw_runtime *fwrt, char *mcc)
{ … }

int iwl_acpi_get_pwr_limit(struct iwl_fw_runtime *fwrt, u64 *dflt_pwr_limit)
{ … }

int iwl_acpi_get_eckv(struct iwl_fw_runtime *fwrt, u32 *extl_clk)
{ … }

static int iwl_acpi_sar_set_profile(union acpi_object *table,
				    struct iwl_sar_profile *profile,
				    bool enabled, u8 num_chains,
				    u8 num_sub_bands)
{ … }

int iwl_acpi_get_wrds_table(struct iwl_fw_runtime *fwrt)
{ … }

int iwl_acpi_get_ewrd_table(struct iwl_fw_runtime *fwrt)
{ … }

int iwl_acpi_get_wgds_table(struct iwl_fw_runtime *fwrt)
{ … }

int iwl_acpi_get_ppag_table(struct iwl_fw_runtime *fwrt)
{ … }

void iwl_acpi_get_phy_filters(struct iwl_fw_runtime *fwrt,
			      struct iwl_phy_specific_cfg *filters)
{ … }
IWL_EXPORT_SYMBOL(iwl_acpi_get_phy_filters);

void iwl_acpi_get_guid_lock_status(struct iwl_fw_runtime *fwrt)
{ … }
IWL_EXPORT_SYMBOL(iwl_acpi_get_guid_lock_status);

int iwl_acpi_get_wbem(struct iwl_fw_runtime *fwrt, u32 *value)
{ … }