// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
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* All rights reserved.
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*
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* File: baseband.c
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*
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* Purpose: Implement functions to access baseband
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*
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* Author: Yiching Chen
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*
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* Date: May 20, 2004
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*
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* Functions:
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*
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* Revision History:
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*
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*/
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#include <linux/compiler.h>
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#include "firmware.h"
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#include "usbpipe.h"
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#define FIRMWARE_VERSION 0x133 /* version 1.51 */
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#define FIRMWARE_NAME "vntwusb.fw"
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#define FIRMWARE_CHUNK_SIZE 0x400
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int vnt_download_firmware(struct vnt_private *priv)
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{
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struct device *dev = &priv->usb->dev;
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const struct firmware *fw;
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int status;
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void *buffer = NULL;
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bool result = false;
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u16 length;
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int ii, rc;
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dev_dbg(dev, "---->Download firmware\n");
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rc = request_firmware(&fw, FIRMWARE_NAME, dev);
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if (rc) {
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dev_err(dev, "firmware file %s request failed (%d)\n",
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FIRMWARE_NAME, rc);
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goto out;
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}
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buffer = kmalloc(FIRMWARE_CHUNK_SIZE, GFP_KERNEL);
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if (!buffer)
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goto free_fw;
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for (ii = 0; ii < fw->size; ii += FIRMWARE_CHUNK_SIZE) {
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length = min_t(int, fw->size - ii, FIRMWARE_CHUNK_SIZE);
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memcpy(buffer, fw->data + ii, length);
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status = vnt_control_out(priv,
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0,
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0x1200 + ii,
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0x0000,
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length,
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buffer);
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dev_dbg(dev, "Download firmware...%d %zu\n", ii, fw->size);
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if (status != STATUS_SUCCESS)
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goto free_fw;
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}
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result = true;
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free_fw:
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release_firmware(fw);
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out:
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kfree(buffer);
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return result;
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}
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MODULE_FIRMWARE(FIRMWARE_NAME);
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int vnt_firmware_branch_to_sram(struct vnt_private *priv)
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{
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int status;
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dev_dbg(&priv->usb->dev, "---->Branch to Sram\n");
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status = vnt_control_out(priv,
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1,
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0x1200,
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0x0000,
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0,
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NULL);
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return status == STATUS_SUCCESS;
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}
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int vnt_check_firmware_version(struct vnt_private *priv)
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{
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int status;
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status = vnt_control_in(priv,
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MESSAGE_TYPE_READ,
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0,
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MESSAGE_REQUEST_VERSION,
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2,
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(u8 *)&priv->firmware_version);
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dev_dbg(&priv->usb->dev, "Firmware Version [%04x]\n",
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priv->firmware_version);
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if (status != STATUS_SUCCESS) {
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dev_dbg(&priv->usb->dev, "Firmware Invalid.\n");
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return false;
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}
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if (priv->firmware_version == 0xFFFF) {
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dev_dbg(&priv->usb->dev, "In Loader.\n");
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return false;
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}
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dev_dbg(&priv->usb->dev, "Firmware Version [%04x]\n",
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priv->firmware_version);
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if (priv->firmware_version < FIRMWARE_VERSION) {
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/* branch to loader for download new firmware */
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vnt_firmware_branch_to_sram(priv);
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return false;
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}
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return true;
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}
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