# AIC8800 Linux Driver
This driver supports AIC8800-family chipsets used by devices such as the Tenda U11, AX913B, and TP-Link Archer TX1U Nano.

> **Legacy MCU revision 1 branch:** You are viewing `legacy-mcu1`. This branch
> is only for AIC8800D80 or AIC8800DC/DW devices that report
> `chip_id=7, chip_mcu_id=1`. It provides complete matched V3 firmware and
> loader profiles for the D80 upload-limit failure validated in
> [issue #58](https://github.com/shenmintao/aic8800d80/issues/58) and the DC/DW
> V5 main-application timeout validated in
> [issue #71](https://github.com/shenmintao/aic8800d80/issues/71). Use
> [`main`](https://github.com/shenmintao/aic8800d80/tree/main) for newer
> `chip_mcu_id=0` hardware or when the MCU revision is unknown. See the
> [D80](tests/issue58-mcu1-legacy-fw/README.md) and
> [DC/DW](tests/issue71-mcu1-v3-profile/README.md) support notes before installing.

Added support for devices with Vendor ID 368B (tested).

Tested on Linux kernel 6.16 with Ubuntu 25.04 and 6.1.0.27 with Debian 12.

> **Bluetooth support:** This branch initializes the integrated Bluetooth
> controller for the kernel's standard `btusb` driver. It does not contain or
> install `aic_btusb`.

> [!NOTE]
> **Bluetooth branch retirement:** Do not switch MCU1 hardware to the separate
> [`bluetooth`](https://github.com/shenmintao/aic8800d80/tree/bluetooth) branch.
> That branch is deprecated, is being kept only during migration, and will be
> removed after the unified builds are validated. `legacy-mcu1` already
> provides Bluetooth through the kernel's standard `btusb` driver. Its unified
> installer and device-scoped `368b:8d81` ZLP support are being validated in
> [PR #74](https://github.com/shenmintao/aic8800d80/pull/74); the ZLP module
> remains inactive on other VID:PID combinations.

### Disclaimer
I did not develop this software, The code is sourced from the Tenda U11 driver. I only made some modifications to the code to adapt it to newer kernel versions. Apart from compilation issues, I am unable to address other problems.

### Attention
Before installing the driver, delete all aic8800-related folders under /lib/firmware. Using an incorrect firmware version may cause the system to freeze.

### Installation Steps

#### Method 1: [Quick Installation](INSTALL_SCRIPT.md) (Recommended)

#### Method 2: Manual Installation

#### Copy udev rules:
Copy the aic.rules file to /lib/udev/rules.d/:

```bash
sudo cp aic.rules /lib/udev/rules.d/
```

#### Copy firmware:

Copy the aic8800D80 folder from ./fw to /lib/firmware/:

```bash
sudo cp -r ./fw/aic8800D80 /lib/firmware/
```
#### Navigate to the driver directory:

Change to the drivers/aic8800 directory:

```bash
cd ./drivers/aic8800
```

#### Compile and Install the Driver:

First, compile the driver:

```bash
make
```
Then, install the driver:

```bash
sudo make install
```

For any kernel updates, you'll need to reinstall the driver:

```bash
make clean
make
sudo make install
```

### Load the Driver
After installation, load the driver with the following command:

```bash
sudo modprobe aic8800_fdrv
```

### Verify the Module is Active
Check if the module is loaded correctly:

```bash
lsmod | grep aic
```
You should see output similar to:

```bash
aic8800_fdrv    536576  0
cfg80211        1146880 1   aic8800_fdrv
aic_load_fw     69632   1   aic8800_fdrv
usbcore         348160  10  xhci_hcd,ehci_pci,usbhid,usb_storage,ehci_hcd,xhci_pci,uas,aic_load_fw,uhci_hcd,aic8800_fdrv
```

After that, plug in your USB wireless network card.

### Verify Wi-Fi Device is Active
To check if the Wi-Fi interface is recognized, run:

```bash
iwconfig
```
If the device is still not active, check the kernel logs for any errors related to the driver:

```bash
sudo dmesg
```