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76 lines
2 KiB
C
76 lines
2 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
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/*
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* Copyright (C) 2021, 2025 Intel Corporation
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*/
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#ifndef __iwl_fw_dhc_utils_h__
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#define __iwl_fw_dhc_utils_h__
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#include <linux/types.h>
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#include "fw/img.h"
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#include "api/commands.h"
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#include "api/dhc.h"
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/**
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* iwl_dhc_resp_status - return status of DHC response
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* @fw: firwmware image information
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* @pkt: response packet, must not be %NULL
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*
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* Returns: the status value of the DHC command or (u32)-1 if the
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* response was too short.
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*/
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static inline u32 iwl_dhc_resp_status(const struct iwl_fw *fw,
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struct iwl_rx_packet *pkt)
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{
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if (iwl_fw_lookup_notif_ver(fw, IWL_ALWAYS_LONG_GROUP,
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DEBUG_HOST_COMMAND, 1) >= 2) {
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struct iwl_dhc_cmd_resp *resp = (void *)pkt->data;
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if (iwl_rx_packet_payload_len(pkt) < sizeof(*resp))
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return (u32)-1;
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return le32_to_cpu(resp->status);
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} else {
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struct iwl_dhc_cmd_resp_v1 *resp = (void *)pkt->data;
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if (iwl_rx_packet_payload_len(pkt) < sizeof(*resp))
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return (u32)-1;
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return le32_to_cpu(resp->status);
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}
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}
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/**
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* iwl_dhc_resp_data - return data pointer of DHC response
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* @fw: firwmware image information
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* @pkt: response packet, must not be %NULL
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* @len: where to store the length
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*
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* Returns: The data pointer, or an ERR_PTR() if the data was
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* not valid (too short).
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*/
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static inline void *iwl_dhc_resp_data(const struct iwl_fw *fw,
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struct iwl_rx_packet *pkt,
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unsigned int *len)
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{
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if (iwl_fw_lookup_notif_ver(fw, IWL_ALWAYS_LONG_GROUP,
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DEBUG_HOST_COMMAND, 1) >= 2) {
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struct iwl_dhc_cmd_resp *resp = (void *)pkt->data;
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if (iwl_rx_packet_payload_len(pkt) < sizeof(*resp))
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return ERR_PTR(-EINVAL);
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*len = iwl_rx_packet_payload_len(pkt) - sizeof(*resp);
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return (void *)&resp->data;
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} else {
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struct iwl_dhc_cmd_resp_v1 *resp = (void *)pkt->data;
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if (iwl_rx_packet_payload_len(pkt) < sizeof(*resp))
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return ERR_PTR(-EINVAL);
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*len = iwl_rx_packet_payload_len(pkt) - sizeof(*resp);
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return (void *)&resp->data;
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}
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}
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#endif /* __iwl_fw_dhc_utils_h__ */
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