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