448 lines
15 KiB
Rust
448 lines
15 KiB
Rust
use crate::device::sys_timer;
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use core::mem::{self, MaybeUninit};
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use core::cell::RefCell;
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use cortex_m::interrupt::{CriticalSection, Mutex};
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use log::{debug, info};
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use smoltcp::{
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iface::{
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self, Interface, SocketHandle, SocketSet, SocketStorage
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}, socket::tcp::{Socket, SocketBuffer, State}, time::Instant, wire::{EthernetAddress, IpAddress, IpCidr, Ipv4Address, Ipv4Cidr}
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};
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use stm32_eth::{
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Parts, EthPins, PartsIn,
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mac::{Speed, EthernetMACWithMii},
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dma::{
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TxRingEntry, RxRingEntry, EthernetDMA
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}};
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use stm32f4xx_hal::{
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gpio::{gpioa::*, gpiob::*, gpioc::*, Alternate, Input, Pin},
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rcc::Clocks,
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interrupt,
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};
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use serde::{Deserialize, Serialize};
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#[derive(Debug, Clone, Copy, Deserialize, Serialize)]
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pub struct IpSettings {
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addr: [u8; 4],
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port: u16,
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prefix_len: u8,
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gateway: [u8; 4],
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}
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impl Default for IpSettings {
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fn default() -> Self {
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IpSettings {
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addr: [192, 168, 1, 128],
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port: 1337,
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prefix_len: 24,
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gateway: [192, 168, 1, 1]
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}
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}
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}
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/// Interrupt pending flag: set by the `ETH` interrupt handler, should
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/// be cleared before polling the interface.
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static NET_PENDING: Mutex<RefCell<bool>> = Mutex::new(RefCell::new(false));
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pub struct ServerHandle {
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socket_handles: [SocketHandle; NUM_OF_SOCKETS],
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socket_set: SocketSet<'static>,
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socket_addr: (IpAddress, u16),
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iface: EthInterface,
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dma: EthernetDMA<'static, 'static>,
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phy: EthernetPhy<EthernetMACWithMii<Pin<'A', 2, Alternate<11>>, Pin<'C', 1, Alternate<11>>>>,
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link_was_up: bool,
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}
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pub type EthernetPins =
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EthPins<PA1<Input>, PA7<Input>, PB11<Input>, PB12<Input>, PB13<Input>, PC4<Input>, PC5<Input>>;
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pub struct EthernetMgmtPins {
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pub mdio: PA2<Alternate<11>>,
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pub mdc: PC1<Alternate<11>>,
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}
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pub type EthInterface = Interface;
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const NUM_OF_SOCKETS : usize = 4;
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const TCP_BUFFER_SIZE: usize = 2048;
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static mut RX_RING: Option<[RxRingEntry; 8]> = None;
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static mut TX_RING: Option<[TxRingEntry; 2]> = None;
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static mut SOCKET_STORAGE: Option<[SocketStorage<'static>; NUM_OF_SOCKETS]> = None;
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fn now_fn() -> smoltcp::time::Instant {
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Instant::from_millis(i64::from(sys_timer::now()))
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}
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static mut SERVER_HANDLE : Option<ServerHandle> = None;
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impl ServerHandle {
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pub fn new (eth_pins: EthernetPins,
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eth_mgmt_pins: EthernetMgmtPins,
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ethernet_parts_in: PartsIn,
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clocks: Clocks,
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mac_addr: [u8; 6],
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ip_settings: IpSettings,
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) {
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let rx_ring = unsafe { RX_RING.get_or_insert(Default::default()) };
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let tx_ring = unsafe { TX_RING.get_or_insert(Default::default()) };
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let socket_storage = unsafe { SOCKET_STORAGE.get_or_insert([SocketStorage::EMPTY; NUM_OF_SOCKETS]) };
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let Parts {
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mut dma,
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mac,
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#[cfg(feature = "ptp")]
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..
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} = stm32_eth::new_with_mii(
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ethernet_parts_in,
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&mut rx_ring[..],
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&mut tx_ring[..],
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clocks,
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eth_pins,
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eth_mgmt_pins.mdio,
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eth_mgmt_pins.mdc
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).unwrap();
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let ip_init = IpCidr::Ipv4(Ipv4Cidr::new(
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Ipv4Address::new(ip_settings.addr[0], ip_settings.addr[1], ip_settings.addr[2], ip_settings.addr[3]),
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ip_settings.prefix_len,
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));
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let socket_addr: (IpAddress, u16) = (
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IpAddress::Ipv4(Ipv4Address::new(
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ip_settings.addr[0],
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ip_settings.addr[1],
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ip_settings.addr[2],
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ip_settings.addr[3],
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)),
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ip_settings.port,
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);
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let mut routes = smoltcp::iface::Routes::new();
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routes
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.add_default_ipv4_route(Ipv4Address::new(ip_settings.gateway[0], ip_settings.gateway[1], ip_settings.gateway[2], ip_settings.gateway[3]))
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.ok();
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dma.enable_interrupt();
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let config = iface::Config::new(EthernetAddress::from_bytes(&mac_addr).into());
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let mut iface = Interface::new(config, &mut &mut dma, smoltcp::time::Instant::ZERO);
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iface.set_hardware_addr(EthernetAddress(mac_addr).into());
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debug!("MAC ADDRESS: {:02X?}", EthernetAddress(mac_addr));
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debug!("IP Settings: {:?}", ip_settings);
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iface.update_ip_addrs(|addr| {
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addr.push(ip_init).unwrap();
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});
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let mut socket_set = SocketSet::new(&mut socket_storage[..]);
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let tcp_handles = {
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// Do not use NUM_OF_SOCKETS to define array size to
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// remind developers to create/remove tcp_handles accordingly after changing NUM_OF_SOCKETS
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let mut tcp_handles: [MaybeUninit<SocketHandle>; 4]= unsafe {
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MaybeUninit::uninit().assume_init()
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};
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macro_rules! create_tcp_handle {
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($rx_storage:ident, $tx_storage:ident, $handle:expr) => {
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static mut $rx_storage : [u8; TCP_BUFFER_SIZE] = [0; TCP_BUFFER_SIZE];
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static mut $tx_storage : [u8; TCP_BUFFER_SIZE] = [0; TCP_BUFFER_SIZE];
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unsafe {
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let rx_buffer = SocketBuffer::new(&mut $rx_storage[..]);
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let tx_buffer = SocketBuffer::new(&mut $tx_storage[..]);
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$handle.write(socket_set.add(Socket::new(rx_buffer, tx_buffer)));
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}
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}
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}
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create_tcp_handle!(RX_STORAGE0, TX_STORAGE0, tcp_handles[0]);
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create_tcp_handle!(RX_STORAGE1, TX_STORAGE1, tcp_handles[1]);
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create_tcp_handle!(RX_STORAGE2, TX_STORAGE2, tcp_handles[2]);
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create_tcp_handle!(RX_STORAGE3, TX_STORAGE3, tcp_handles[3]);
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unsafe { mem::transmute::<_, [SocketHandle; 4]>(tcp_handles) }
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};
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for i in 0..NUM_OF_SOCKETS {
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let socket = socket_set.get_mut::<Socket>(tcp_handles[i]);
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socket.listen(socket_addr).ok();
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}
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iface.poll(Instant::from_millis(i64::from(sys_timer::now())), &mut &mut dma, &mut socket_set);
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if let Ok(mut phy) = EthernetPhy::from_miim(mac, 0) {
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info!(
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"Resetting PHY as an extra step. Type: {}",
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phy.ident_string()
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);
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phy.phy_init();
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let server = ServerHandle {
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socket_handles: tcp_handles,
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socket_set: socket_set,
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socket_addr: socket_addr,
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iface: iface,
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dma: dma,
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phy: phy,
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link_was_up: false,
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};
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unsafe {
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SERVER_HANDLE = Some(server);
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}
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} else {
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panic!("Ethernet Phy is not supported");
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}
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}
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pub fn update_link_speed(&mut self) {
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if !self.link_was_up & self.phy.phy_link_up() {
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if let Some(speed) = self.phy.speed().map(|s| match s {
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PhySpeed::HalfDuplexBase10T => Speed::HalfDuplexBase10T,
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PhySpeed::FullDuplexBase10T => Speed::FullDuplexBase10T,
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PhySpeed::HalfDuplexBase100Tx => Speed::HalfDuplexBase100Tx,
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PhySpeed::FullDuplexBase100Tx => Speed::FullDuplexBase100Tx,
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}) {
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info!("New eth link is up. Setting detected PhySpeed: {:?}", speed);
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self.phy.get_miim().set_speed(speed);
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} else {
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debug!("Failed to detect link speed.");
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}
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}
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self.link_was_up = self.phy.phy_link_up();
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}
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pub fn recv(&mut self, buffer: &mut [u8], socket_handles: SocketHandle)-> Result<usize, smoltcp::socket::tcp::RecvError> {
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self.iface.poll(now_fn(), &mut &mut self.dma, &mut self.socket_set);
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let socket = self.socket_set.get_mut::<Socket>(socket_handles);
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socket.recv_slice(buffer)
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}
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pub fn send(&mut self, buffer: &mut [u8], num_bytes: usize, socket_handles: SocketHandle) {
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let socket = self.socket_set.get_mut::<Socket>(socket_handles);
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if num_bytes > 0 {
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socket.send_slice(&buffer[..num_bytes]).ok();
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info!("Sent {} bytes.", num_bytes);
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}
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// Send bytes out
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self.iface.poll(now_fn(), &mut &mut self.dma, &mut self.socket_set);
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}
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pub fn poll_socket_status(&mut self, socket_handles: SocketHandle)-> bool {
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let socket = self.socket_set.get_mut::<Socket>(socket_handles);
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if !socket.is_listening() && !socket.is_open() || socket.state() == State::CloseWait {
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socket.abort();
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socket.listen(self.socket_addr).ok();
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info!("Disconnected... Reopening listening socket.");
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return false;
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} else if socket.state() == State::Closed || socket.state() == State::Closing {
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return false;
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}
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return true;
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}
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pub fn close_socket(&mut self, socket_handles: SocketHandle) {
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let socket = self.socket_set.get_mut::<Socket>(socket_handles);
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socket.abort();
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}
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}
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use ieee802_3_miim::{
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phy::{
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lan87xxa::{LAN8720A, LAN8742A},
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BarePhy, KSZ8081R,
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PhySpeed
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},
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Miim, Pause, Phy,
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};
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/// An ethernet PHY
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pub enum EthernetPhy<M: Miim> {
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/// LAN8720A
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LAN8720A(LAN8720A<M>),
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/// LAN8742A
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LAN8742A(LAN8742A<M>),
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/// KSZ8081R
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KSZ8081R(KSZ8081R<M>),
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}
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impl<M: Miim> Phy<M> for EthernetPhy<M> {
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fn best_supported_advertisement(&self) -> ieee802_3_miim::AutoNegotiationAdvertisement {
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unimplemented!()
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}
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fn get_miim(&mut self) -> &mut M {
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match self {
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EthernetPhy::LAN8720A(phy) => phy.get_miim(),
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EthernetPhy::LAN8742A(phy) => phy.get_miim(),
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EthernetPhy::KSZ8081R(phy) => phy.get_miim(),
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}
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}
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fn get_phy_addr(&self) -> u8 {
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match self {
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EthernetPhy::LAN8720A(phy) => phy.get_phy_addr(),
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EthernetPhy::LAN8742A(phy) => phy.get_phy_addr(),
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EthernetPhy::KSZ8081R(phy) => phy.get_phy_addr(),
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}
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}
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}
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impl<M: Miim> EthernetPhy<M> {
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/// Attempt to create one of the known PHYs from the given
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/// MIIM.
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///
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/// Returns an error if the PHY does not support the extended register
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/// set, or if the PHY's identifier does not correspond to a known PHY.
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pub fn from_miim(miim: M, phy_addr: u8) -> Result<Self, M> {
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let mut bare = BarePhy::new(miim, phy_addr, Pause::NoPause);
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let phy_ident = if let Some(id) = bare.phy_ident() {
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id.raw_u32()
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} else {
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return Err(bare.release());
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};
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let miim = bare.release();
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match phy_ident & 0xFFFFFFF0 {
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0x0007C0F0 => Ok(Self::LAN8720A(LAN8720A::new(miim, phy_addr))),
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0x0007C130 => Ok(Self::LAN8742A(LAN8742A::new(miim, phy_addr))),
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0x00221560 => Ok(Self::KSZ8081R(KSZ8081R::new(miim, phy_addr))),
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_ => Err(miim),
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}
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}
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/// Get a string describing the type of PHY
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pub const fn ident_string(&self) -> &'static str {
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match self {
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EthernetPhy::LAN8720A(_) => "LAN8720A",
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EthernetPhy::LAN8742A(_) => "LAN8742A",
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EthernetPhy::KSZ8081R(_) => "KSZ8081R",
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}
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}
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/// Initialize the PHY
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pub fn phy_init(&mut self) {
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match self {
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EthernetPhy::LAN8720A(phy) => phy.phy_init(),
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EthernetPhy::LAN8742A(phy) => phy.phy_init(),
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EthernetPhy::KSZ8081R(phy) => {
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phy.set_autonegotiation_advertisement(phy.best_supported_advertisement());
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}
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}
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}
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#[allow(dead_code)]
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pub fn speed(&mut self) -> Option<ieee802_3_miim::phy::PhySpeed> {
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match self {
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EthernetPhy::LAN8720A(phy) => phy.link_speed(),
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EthernetPhy::LAN8742A(phy) => phy.link_speed(),
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EthernetPhy::KSZ8081R(phy) => phy.link_speed(),
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}
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}
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#[allow(dead_code)]
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pub fn release(self) -> M {
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match self {
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EthernetPhy::LAN8720A(phy) => phy.release(),
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EthernetPhy::LAN8742A(phy) => phy.release(),
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EthernetPhy::KSZ8081R(phy) => phy.release(),
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}
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}
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}
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pub fn eth_poll_and_update_link_speed() {
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unsafe {
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if let Some(ref mut server_handle ) = SERVER_HANDLE {
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server_handle.update_link_speed();
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}
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else {
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panic!("eth_poll_and_update_link_speed is called before init");
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}
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}
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}
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pub fn eth_send(buffer: &mut [u8], num_bytes: usize, socket_handles: SocketHandle) {
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unsafe {
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if let Some(ref mut server_handle ) = SERVER_HANDLE {
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server_handle.send(buffer, num_bytes, socket_handles);
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}
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else {
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panic!("eth_send is called before init");
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}
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}
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}
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pub fn eth_recv(buffer: &mut [u8], socket_handles: SocketHandle)-> usize{
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unsafe {
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if let Some(ref mut server_handle ) = SERVER_HANDLE {
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match server_handle.recv(buffer, socket_handles){
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Ok(recv_bytes) => {return recv_bytes}
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Err(err) => {
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debug!("TCP Recv Error: {}", err);
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return 0
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}
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};
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}
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else {
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panic!("eth_send is called before init");
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}
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}
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}
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pub fn eth_is_socket_active(socket_handles: SocketHandle) -> bool {
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unsafe {
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if let Some(ref mut server_handle ) = SERVER_HANDLE {
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server_handle.poll_socket_status(socket_handles)
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}
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else {
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panic!("eth_is_socket_active is called before init");
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}
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}
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}
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pub fn eth_close_socket(socket_handles: SocketHandle) {
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unsafe {
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if let Some(ref mut server_handle ) = SERVER_HANDLE {
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server_handle.close_socket(socket_handles)
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}
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else {
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panic!("eth_close_socket is called before init");
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}
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}
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}
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pub fn for_each<F: FnMut(SocketHandle)>(mut callback: F) {
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unsafe {
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if let Some(ref mut server_handle ) = SERVER_HANDLE {
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for i in 0..NUM_OF_SOCKETS {
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callback(server_handle.socket_handles[i]);
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}
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}
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else {
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panic!("eth_close_socket is called before init");
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}
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}
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}
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/// Potentially wake up from `wfi()`, set the interrupt pending flag,
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/// clear interrupt flags.
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#[interrupt]
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fn ETH() {
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let interrupt_reason = stm32_eth::eth_interrupt_handler();
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cortex_m::interrupt::free(|cs| {
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*NET_PENDING.borrow(cs)
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.borrow_mut() = true;
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});
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debug!("Ethernet Interrupt{:?}", interrupt_reason);
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}
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/// Has an interrupt occurred since last call to `clear_pending()`?
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pub fn is_pending(cs: &CriticalSection) -> bool {
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*NET_PENDING.borrow(cs)
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.borrow()
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}
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/// Clear the interrupt pending flag before polling the interface for
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/// data.
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pub fn clear_pending(cs: &CriticalSection) {
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*NET_PENDING.borrow(cs)
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.borrow_mut() = false;
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}
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