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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license. When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2018 Intel Corporation. All rights reserved.
//
// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
//
// Generic firmware loader.
//
#include <linux/firmware.h>
#include "sof-priv.h"
#include "ops.h"
int snd_sof_load_firmware_raw(struct snd_sof_dev *sdev)
{
struct snd_sof_pdata *plat_data = sdev->pdata;
const char *fw_filename;
ssize_t ext_man_size;
int ret;
/* Don't request firmware again if firmware is already requested */
if (sdev->basefw.fw)
return 0;
fw_filename = kasprintf(GFP_KERNEL, "%s/%s",
plat_data->fw_filename_prefix,
plat_data->fw_filename);
if (!fw_filename)
return -ENOMEM;
ret = request_firmware(&sdev->basefw.fw, fw_filename, sdev->dev);
if (ret < 0) {
dev_err(sdev->dev,
"error: sof firmware file is missing, you might need to\n");
dev_err(sdev->dev,
" download it from https://github.com/thesofproject/sof-bin/\n");
goto err;
} else {
dev_dbg(sdev->dev, "request_firmware %s successful\n",
fw_filename);
}
/* check for extended manifest */
ext_man_size = sdev->ipc->ops->fw_loader->parse_ext_manifest(sdev);
if (ext_man_size > 0) {
/* when no error occurred, drop extended manifest */
sdev->basefw.payload_offset = ext_man_size;
} else if (!ext_man_size) {
/* No extended manifest, so nothing to skip during FW load */
dev_dbg(sdev->dev, "firmware doesn't contain extended manifest\n");
} else {
ret = ext_man_size;
dev_err(sdev->dev, "error: firmware %s contains unsupported or invalid extended manifest: %d\n",
fw_filename, ret);
}
err:
kfree(fw_filename);
return ret;
}
EXPORT_SYMBOL(snd_sof_load_firmware_raw);
int snd_sof_load_firmware_memcpy(struct snd_sof_dev *sdev)
{
int ret;
ret = snd_sof_load_firmware_raw(sdev);
if (ret < 0)
return ret;
/* make sure the FW header and file is valid */
ret = sdev->ipc->ops->fw_loader->validate(sdev);
if (ret < 0) {
dev_err(sdev->dev, "error: invalid FW header\n");
goto error;
}
/* prepare the DSP for FW loading */
ret = snd_sof_dsp_reset(sdev);
if (ret < 0) {
dev_err(sdev->dev, "error: failed to reset DSP\n");
goto error;
}
/* parse and load firmware modules to DSP */
if (sdev->ipc->ops->fw_loader->load_fw_to_dsp) {
ret = sdev->ipc->ops->fw_loader->load_fw_to_dsp(sdev);
if (ret < 0) {
dev_err(sdev->dev, "Firmware loading failed\n");
goto error;
}
}
return 0;
error:
release_firmware(sdev->basefw.fw);
sdev->basefw.fw = NULL;
return ret;
}
EXPORT_SYMBOL(snd_sof_load_firmware_memcpy);
int snd_sof_run_firmware(struct snd_sof_dev *sdev)
{
int ret;
init_waitqueue_head(&sdev->boot_wait);
/* (re-)enable dsp dump */
sdev->dbg_dump_printed = false;
sdev->ipc_dump_printed = false;
/* create read-only fw_version debugfs to store boot version info */
if (sdev->first_boot) {
ret = snd_sof_debugfs_buf_item(sdev, &sdev->fw_version,
sizeof(sdev->fw_version),
"fw_version", 0444);
/* errors are only due to memory allocation, not debugfs */
if (ret < 0) {
dev_err(sdev->dev, "error: snd_sof_debugfs_buf_item failed\n");
return ret;
}
}
/* perform pre fw run operations */
ret = snd_sof_dsp_pre_fw_run(sdev);
if (ret < 0) {
dev_err(sdev->dev, "error: failed pre fw run op\n");
return ret;
}
dev_dbg(sdev->dev, "booting DSP firmware\n");
/* boot the firmware on the DSP */
ret = snd_sof_dsp_run(sdev);
if (ret < 0) {
snd_sof_dsp_dbg_dump(sdev, "Failed to start DSP",
SOF_DBG_DUMP_MBOX | SOF_DBG_DUMP_PCI);
return ret;
}
/*
* now wait for the DSP to boot. There are 3 possible outcomes:
* 1. Boot wait times out indicating FW boot failure.
* 2. FW boots successfully and fw_ready op succeeds.
* 3. FW boots but fw_ready op fails.
*/
ret = wait_event_timeout(sdev->boot_wait,
sdev->fw_state > SOF_FW_BOOT_IN_PROGRESS,
msecs_to_jiffies(sdev->boot_timeout));
if (ret == 0) {
snd_sof_dsp_dbg_dump(sdev, "Firmware boot failure due to timeout",
SOF_DBG_DUMP_REGS | SOF_DBG_DUMP_MBOX |
SOF_DBG_DUMP_TEXT | SOF_DBG_DUMP_PCI);
return -EIO;
}
if (sdev->fw_state == SOF_FW_BOOT_READY_FAILED)
return -EIO; /* FW boots but fw_ready op failed */
dev_dbg(sdev->dev, "firmware boot complete\n");
sof_set_fw_state(sdev, SOF_FW_BOOT_COMPLETE);
/* perform post fw run operations */
ret = snd_sof_dsp_post_fw_run(sdev);
if (ret < 0) {
dev_err(sdev->dev, "error: failed post fw run op\n");
return ret;
}
if (sdev->ipc->ops->post_fw_boot)
return sdev->ipc->ops->post_fw_boot(sdev);
return 0;
}
EXPORT_SYMBOL(snd_sof_run_firmware);
void snd_sof_fw_unload(struct snd_sof_dev *sdev)
{
/* TODO: support module unloading at runtime */
release_firmware(sdev->basefw.fw);
sdev->basefw.fw = NULL;
}
EXPORT_SYMBOL(snd_sof_fw_unload);
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