aed594f4b8
Add an API qdf_file_read_bytes to read a file from within the driver and return the contents of it along with its size. Change-Id: If777e1b9c610e8cc7dd35be42fa9ced2bb1c6560 CRs-Fixed: 3456115
156 lines
3.6 KiB
C
156 lines
3.6 KiB
C
/*
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* Copyright (c) 2018-2019, 2021 The Linux Foundation. All rights reserved.
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* Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
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*
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* Permission to use, copy, modify, and/or distribute this software for
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* any purpose with or without fee is hereby granted, provided that the
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* above copyright notice and this permission notice appear in all
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* copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/firmware.h>
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#include "qdf_file.h"
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#include "qdf_mem.h"
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#include "qdf_module.h"
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#include "qdf_status.h"
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#include "qdf_trace.h"
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#include "qdf_types.h"
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 18, 0))
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static inline
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int qdf_firmware_request_nowarn(const struct firmware **fw,
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const char *name,
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struct device *device)
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{
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return firmware_request_nowarn(fw, name, device);
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}
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#else
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static inline
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int qdf_firmware_request_nowarn(const struct firmware **fw,
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const char *name,
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struct device *device)
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{
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return request_firmware(fw, name, device);
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}
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#endif
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QDF_STATUS qdf_file_read(const char *path, char **out_buf)
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{
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int errno;
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const struct firmware *fw;
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char *buf;
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*out_buf = NULL;
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errno = qdf_firmware_request_nowarn(&fw, path, NULL);
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if (errno) {
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qdf_err("Failed to read file %s", path);
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return QDF_STATUS_E_FAILURE;
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}
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/* qdf_mem_malloc zeros new memory; +1 size ensures null-termination */
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buf = qdf_mem_malloc(fw->size + 1);
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if (!buf) {
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release_firmware(fw);
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return QDF_STATUS_E_NOMEM;
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}
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qdf_mem_copy(buf, fw->data, fw->size);
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release_firmware(fw);
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*out_buf = buf;
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return QDF_STATUS_SUCCESS;
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}
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qdf_export_symbol(qdf_file_read);
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void qdf_file_buf_free(char *file_buf)
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{
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QDF_BUG(file_buf);
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if (!file_buf)
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return;
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qdf_mem_free(file_buf);
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}
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qdf_export_symbol(qdf_file_buf_free);
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#ifdef QCA_WIFI_MODULE_PARAMS_FROM_INI
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QDF_STATUS qdf_module_param_file_read(const char *path, char **out_buf)
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{
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int errno;
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const struct firmware *fw;
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char *buf;
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*out_buf = NULL;
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errno = qdf_firmware_request_nowarn(&fw, path, NULL);
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if (errno) {
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qdf_err("Failed to read file %s", path);
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return QDF_STATUS_E_FAILURE;
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}
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/* qdf_untracked_mem_malloc zeros new memory; +1 size
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* ensures null-termination
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*/
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buf = qdf_untracked_mem_malloc(fw->size + 1);
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if (!buf) {
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release_firmware(fw);
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return QDF_STATUS_E_NOMEM;
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}
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qdf_mem_copy(buf, fw->data, fw->size);
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release_firmware(fw);
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*out_buf = buf;
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return QDF_STATUS_SUCCESS;
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}
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void qdf_module_param_file_free(char *file_buf)
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{
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QDF_BUG(file_buf);
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if (!file_buf)
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return;
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qdf_untracked_mem_free(file_buf);
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}
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#endif
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QDF_STATUS qdf_file_read_bytes(const char *path, char **out_buf,
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unsigned int *out_buff_size)
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{
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int errno;
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const struct firmware *fw;
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char *buf;
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*out_buf = NULL;
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errno = qdf_firmware_request_nowarn(&fw, path, NULL);
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if (errno) {
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qdf_err("Failed to read file %s", path);
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return QDF_STATUS_E_FAILURE;
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}
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buf = qdf_mem_malloc(fw->size);
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if (!buf) {
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release_firmware(fw);
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return QDF_STATUS_E_NOMEM;
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}
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qdf_mem_copy(buf, fw->data, fw->size);
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*out_buff_size = fw->size;
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*out_buf = buf;
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release_firmware(fw);
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return QDF_STATUS_SUCCESS;
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}
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qdf_export_symbol(qdf_file_read_bytes);
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