490 lines
18 KiB
Rust
490 lines
18 KiB
Rust
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use embassy_futures::select::{select3, Either3};
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use embassy_net_driver_channel as ch;
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use embassy_sync::pubsub::PubSubBehavior;
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use crate::sub::mac::Mac;
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#[cfg(feature = "firmware-logs")]
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struct LogState {
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addr: u32,
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last_idx: usize,
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buf: [u8; 256],
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buf_count: usize,
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}
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#[cfg(feature = "firmware-logs")]
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impl Default for LogState {
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fn default() -> Self {
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Self {
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addr: Default::default(),
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last_idx: Default::default(),
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buf: [0; 256],
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buf_count: Default::default(),
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}
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}
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}
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pub struct Runner<'a, PWR, SPI> {
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ch: ch::Runner<'a, MTU>,
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mac: Mac,
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ioctl_state: &'a IoctlState,
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ioctl_id: u16,
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sdpcm_seq: u8,
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sdpcm_seq_max: u8,
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events: &'a Events,
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#[cfg(feature = "firmware-logs")]
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log: LogState,
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}
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impl<'a, PWR, SPI> Runner<'a, PWR, SPI>
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where
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PWR: OutputPin,
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SPI: SpiBusCyw43,
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{
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pub(crate) fn new(
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ch: ch::Runner<'a, MTU>,
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bus: Bus<PWR, SPI>,
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ioctl_state: &'a IoctlState,
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events: &'a Events,
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) -> Self {
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Self {
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ch,
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bus,
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ioctl_state,
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ioctl_id: 0,
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sdpcm_seq: 0,
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sdpcm_seq_max: 1,
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events,
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#[cfg(feature = "firmware-logs")]
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log: LogState::default(),
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}
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}
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pub(crate) async fn init(&mut self, firmware: &[u8]) {
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self.bus.init().await;
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#[cfg(feature = "firmware-logs")]
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self.log_init().await;
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debug!("wifi init done");
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}
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#[cfg(feature = "firmware-logs")]
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async fn log_init(&mut self) {
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// Initialize shared memory for logging.
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let addr = CHIP.atcm_ram_base_address + CHIP.chip_ram_size - 4 - CHIP.socram_srmem_size;
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let shared_addr = self.bus.bp_read32(addr).await;
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debug!("shared_addr {:08x}", shared_addr);
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let mut shared = [0; SharedMemData::SIZE];
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self.bus.bp_read(shared_addr, &mut shared).await;
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let shared = SharedMemData::from_bytes(&shared);
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self.log.addr = shared.console_addr + 8;
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}
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#[cfg(feature = "firmware-logs")]
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async fn log_read(&mut self) {
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// Read log struct
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let mut log = [0; SharedMemLog::SIZE];
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self.bus.bp_read(self.log.addr, &mut log).await;
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let log = SharedMemLog::from_bytes(&log);
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let idx = log.idx as usize;
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// If pointer hasn't moved, no need to do anything.
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if idx == self.log.last_idx {
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return;
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}
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// Read entire buf for now. We could read only what we need, but then we
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// run into annoying alignment issues in `bp_read`.
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let mut buf = [0; 0x400];
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self.bus.bp_read(log.buf, &mut buf).await;
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while self.log.last_idx != idx as usize {
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let b = buf[self.log.last_idx];
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if b == b'\r' || b == b'\n' {
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if self.log.buf_count != 0 {
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let s = unsafe { core::str::from_utf8_unchecked(&self.log.buf[..self.log.buf_count]) };
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debug!("LOGS: {}", s);
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self.log.buf_count = 0;
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}
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} else if self.log.buf_count < self.log.buf.len() {
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self.log.buf[self.log.buf_count] = b;
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self.log.buf_count += 1;
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}
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self.log.last_idx += 1;
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if self.log.last_idx == 0x400 {
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self.log.last_idx = 0;
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}
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}
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}
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pub async fn run(mut self) -> ! {
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let mut buf = [0; 512];
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loop {
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#[cfg(feature = "firmware-logs")]
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self.log_read().await;
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if self.has_credit() {
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let ioctl = self.ioctl_state.wait_pending();
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let tx = self.ch.tx_buf();
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let ev = self.bus.wait_for_event();
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match select3(ioctl, tx, ev).await {
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Either3::First(PendingIoctl {
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buf: iobuf,
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kind,
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cmd,
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iface,
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}) => {
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self.send_ioctl(kind, cmd, iface, unsafe { &*iobuf }).await;
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self.check_status(&mut buf).await;
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}
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Either3::Second(packet) => {
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trace!("tx pkt {:02x}", Bytes(&packet[..packet.len().min(48)]));
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let mut buf = [0; 512];
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let buf8 = slice8_mut(&mut buf);
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// There MUST be 2 bytes of padding between the SDPCM and BDC headers.
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// And ONLY for data packets!
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// No idea why, but the firmware will append two zero bytes to the tx'd packets
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// otherwise. If the packet is exactly 1514 bytes (the max MTU), this makes it
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// be oversized and get dropped.
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// WHD adds it here https://github.com/Infineon/wifi-host-driver/blob/c04fcbb6b0d049304f376cf483fd7b1b570c8cd5/WiFi_Host_Driver/src/include/whd_sdpcm.h#L90
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// and adds it to the header size her https://github.com/Infineon/wifi-host-driver/blob/c04fcbb6b0d049304f376cf483fd7b1b570c8cd5/WiFi_Host_Driver/src/whd_sdpcm.c#L597
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// ¯\_(ツ)_/¯
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const PADDING_SIZE: usize = 2;
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let total_len = SdpcmHeader::SIZE + PADDING_SIZE + BdcHeader::SIZE + packet.len();
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let seq = self.sdpcm_seq;
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self.sdpcm_seq = self.sdpcm_seq.wrapping_add(1);
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let sdpcm_header = SdpcmHeader {
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len: total_len as u16, // TODO does this len need to be rounded up to u32?
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len_inv: !total_len as u16,
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sequence: seq,
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channel_and_flags: CHANNEL_TYPE_DATA,
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next_length: 0,
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header_length: (SdpcmHeader::SIZE + PADDING_SIZE) as _,
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wireless_flow_control: 0,
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bus_data_credit: 0,
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reserved: [0, 0],
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};
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let bdc_header = BdcHeader {
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flags: BDC_VERSION << BDC_VERSION_SHIFT,
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priority: 0,
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flags2: 0,
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data_offset: 0,
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};
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trace!("tx {:?}", sdpcm_header);
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trace!(" {:?}", bdc_header);
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buf8[0..SdpcmHeader::SIZE].copy_from_slice(&sdpcm_header.to_bytes());
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buf8[SdpcmHeader::SIZE + PADDING_SIZE..][..BdcHeader::SIZE]
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.copy_from_slice(&bdc_header.to_bytes());
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buf8[SdpcmHeader::SIZE + PADDING_SIZE + BdcHeader::SIZE..][..packet.len()]
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.copy_from_slice(packet);
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let total_len = (total_len + 3) & !3; // round up to 4byte
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trace!(" {:02x}", Bytes(&buf8[..total_len.min(48)]));
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self.bus.wlan_write(&buf[..(total_len / 4)]).await;
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self.ch.tx_done();
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self.check_status(&mut buf).await;
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}
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Either3::Third(()) => {
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self.handle_irq(&mut buf).await;
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}
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}
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} else {
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warn!("TX stalled");
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self.bus.wait_for_event().await;
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self.handle_irq(&mut buf).await;
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}
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}
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}
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/// Wait for IRQ on F2 packet available
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async fn handle_irq(&mut self, buf: &mut [u32; 512]) {
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// Receive stuff
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let irq = self.bus.read16(FUNC_BUS, REG_BUS_INTERRUPT).await;
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trace!("irq{}", FormatInterrupt(irq));
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if irq & IRQ_F2_PACKET_AVAILABLE != 0 {
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self.check_status(buf).await;
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}
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if irq & IRQ_DATA_UNAVAILABLE != 0 {
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// TODO what should we do here?
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warn!("IRQ DATA_UNAVAILABLE, clearing...");
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self.bus.write16(FUNC_BUS, REG_BUS_INTERRUPT, 1).await;
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}
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}
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/// Handle F2 events while status register is set
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async fn check_status(&mut self, buf: &mut [u32; 512]) {
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loop {
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let status = self.bus.status();
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trace!("check status{}", FormatStatus(status));
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if status & STATUS_F2_PKT_AVAILABLE != 0 {
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let len = (status & STATUS_F2_PKT_LEN_MASK) >> STATUS_F2_PKT_LEN_SHIFT;
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self.bus.wlan_read(buf, len).await;
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trace!("rx {:02x}", Bytes(&slice8_mut(buf)[..(len as usize).min(48)]));
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self.rx(&mut slice8_mut(buf)[..len as usize]);
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} else {
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break;
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}
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}
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}
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fn rx(&mut self, packet: &mut [u8]) {
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let Some((sdpcm_header, payload)) = SdpcmHeader::parse(packet) else {
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return;
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};
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self.update_credit(&sdpcm_header);
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let channel = sdpcm_header.channel_and_flags & 0x0f;
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match channel {
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CHANNEL_TYPE_CONTROL => {
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let Some((cdc_header, response)) = CdcHeader::parse(payload) else {
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return;
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};
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trace!(" {:?}", cdc_header);
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if cdc_header.id == self.ioctl_id {
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if cdc_header.status != 0 {
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// TODO: propagate error instead
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panic!("IOCTL error {}", cdc_header.status as i32);
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}
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self.ioctl_state.ioctl_done(response);
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}
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}
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CHANNEL_TYPE_EVENT => {
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let Some((_, bdc_packet)) = BdcHeader::parse(payload) else {
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warn!("BDC event, incomplete header");
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return;
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};
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let Some((event_packet, evt_data)) = EventPacket::parse(bdc_packet) else {
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warn!("BDC event, incomplete data");
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return;
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};
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const ETH_P_LINK_CTL: u16 = 0x886c; // HPNA, wlan link local tunnel, according to linux if_ether.h
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if event_packet.eth.ether_type != ETH_P_LINK_CTL {
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warn!(
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"unexpected ethernet type 0x{:04x}, expected Broadcom ether type 0x{:04x}",
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event_packet.eth.ether_type, ETH_P_LINK_CTL
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);
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return;
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}
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const BROADCOM_OUI: &[u8] = &[0x00, 0x10, 0x18];
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if event_packet.hdr.oui != BROADCOM_OUI {
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warn!(
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"unexpected ethernet OUI {:02x}, expected Broadcom OUI {:02x}",
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Bytes(&event_packet.hdr.oui),
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Bytes(BROADCOM_OUI)
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);
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return;
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}
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const BCMILCP_SUBTYPE_VENDOR_LONG: u16 = 32769;
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if event_packet.hdr.subtype != BCMILCP_SUBTYPE_VENDOR_LONG {
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warn!("unexpected subtype {}", event_packet.hdr.subtype);
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return;
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}
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const BCMILCP_BCM_SUBTYPE_EVENT: u16 = 1;
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if event_packet.hdr.user_subtype != BCMILCP_BCM_SUBTYPE_EVENT {
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warn!("unexpected user_subtype {}", event_packet.hdr.subtype);
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return;
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}
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let evt_type = events::Event::from(event_packet.msg.event_type as u8);
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debug!(
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"=== EVENT {:?}: {:?} {:02x}",
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evt_type,
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event_packet.msg,
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Bytes(evt_data)
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);
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if self.events.mask.is_enabled(evt_type) {
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let status = event_packet.msg.status;
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let event_payload = match evt_type {
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Event::ESCAN_RESULT if status == EStatus::PARTIAL => {
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let Some((_, bss_info)) = ScanResults::parse(evt_data) else {
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return;
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};
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let Some(bss_info) = BssInfo::parse(bss_info) else {
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return;
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};
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events::Payload::BssInfo(*bss_info)
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}
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Event::ESCAN_RESULT => events::Payload::None,
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_ => events::Payload::None,
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};
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// this intentionally uses the non-blocking publish immediate
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// publish() is a deadlock risk in the current design as awaiting here prevents ioctls
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// The `Runner` always yields when accessing the device, so consumers always have a chance to receive the event
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// (if they are actively awaiting the queue)
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self.events.queue.publish_immediate(events::Message::new(
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Status {
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event_type: evt_type,
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status,
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},
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event_payload,
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));
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}
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}
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CHANNEL_TYPE_DATA => {
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let Some((_, packet)) = BdcHeader::parse(payload) else {
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return;
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};
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trace!("rx pkt {:02x}", Bytes(&packet[..packet.len().min(48)]));
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match self.ch.try_rx_buf() {
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Some(buf) => {
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|
buf[..packet.len()].copy_from_slice(packet);
|
||
|
|
self.ch.rx_done(packet.len())
|
||
|
|
}
|
||
|
|
None => warn!("failed to push rxd packet to the channel."),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
_ => {}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn update_credit(&mut self, sdpcm_header: &SdpcmHeader) {
|
||
|
|
if sdpcm_header.channel_and_flags & 0xf < 3 {
|
||
|
|
let mut sdpcm_seq_max = sdpcm_header.bus_data_credit;
|
||
|
|
if sdpcm_seq_max.wrapping_sub(self.sdpcm_seq) > 0x40 {
|
||
|
|
sdpcm_seq_max = self.sdpcm_seq + 2;
|
||
|
|
}
|
||
|
|
self.sdpcm_seq_max = sdpcm_seq_max;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn has_credit(&self) -> bool {
|
||
|
|
self.sdpcm_seq != self.sdpcm_seq_max && self.sdpcm_seq_max.wrapping_sub(self.sdpcm_seq) & 0x80 == 0
|
||
|
|
}
|
||
|
|
|
||
|
|
async fn send_ioctl(&mut self, kind: IoctlType, cmd: u32, iface: u32, data: &[u8]) {
|
||
|
|
let mut buf = [0; 512];
|
||
|
|
let buf8 = slice8_mut(&mut buf);
|
||
|
|
|
||
|
|
let total_len = SdpcmHeader::SIZE + CdcHeader::SIZE + data.len();
|
||
|
|
|
||
|
|
let sdpcm_seq = self.sdpcm_seq;
|
||
|
|
self.sdpcm_seq = self.sdpcm_seq.wrapping_add(1);
|
||
|
|
self.ioctl_id = self.ioctl_id.wrapping_add(1);
|
||
|
|
|
||
|
|
let sdpcm_header = SdpcmHeader {
|
||
|
|
len: total_len as u16, // TODO does this len need to be rounded up to u32?
|
||
|
|
len_inv: !total_len as u16,
|
||
|
|
sequence: sdpcm_seq,
|
||
|
|
channel_and_flags: CHANNEL_TYPE_CONTROL,
|
||
|
|
next_length: 0,
|
||
|
|
header_length: SdpcmHeader::SIZE as _,
|
||
|
|
wireless_flow_control: 0,
|
||
|
|
bus_data_credit: 0,
|
||
|
|
reserved: [0, 0],
|
||
|
|
};
|
||
|
|
|
||
|
|
let cdc_header = CdcHeader {
|
||
|
|
cmd: cmd,
|
||
|
|
len: data.len() as _,
|
||
|
|
flags: kind as u16 | (iface as u16) << 12,
|
||
|
|
id: self.ioctl_id,
|
||
|
|
status: 0,
|
||
|
|
};
|
||
|
|
trace!("tx {:?}", sdpcm_header);
|
||
|
|
trace!(" {:?}", cdc_header);
|
||
|
|
|
||
|
|
buf8[0..SdpcmHeader::SIZE].copy_from_slice(&sdpcm_header.to_bytes());
|
||
|
|
buf8[SdpcmHeader::SIZE..][..CdcHeader::SIZE].copy_from_slice(&cdc_header.to_bytes());
|
||
|
|
buf8[SdpcmHeader::SIZE + CdcHeader::SIZE..][..data.len()].copy_from_slice(data);
|
||
|
|
|
||
|
|
let total_len = (total_len + 3) & !3; // round up to 4byte
|
||
|
|
|
||
|
|
trace!(" {:02x}", Bytes(&buf8[..total_len.min(48)]));
|
||
|
|
|
||
|
|
self.bus.wlan_write(&buf[..total_len / 4]).await;
|
||
|
|
}
|
||
|
|
|
||
|
|
async fn core_disable(&mut self, core: Core) {
|
||
|
|
let base = core.base_addr();
|
||
|
|
|
||
|
|
// Dummy read?
|
||
|
|
let _ = self.bus.bp_read8(base + AI_RESETCTRL_OFFSET).await;
|
||
|
|
|
||
|
|
// Check it isn't already reset
|
||
|
|
let r = self.bus.bp_read8(base + AI_RESETCTRL_OFFSET).await;
|
||
|
|
if r & AI_RESETCTRL_BIT_RESET != 0 {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
self.bus.bp_write8(base + AI_IOCTRL_OFFSET, 0).await;
|
||
|
|
let _ = self.bus.bp_read8(base + AI_IOCTRL_OFFSET).await;
|
||
|
|
|
||
|
|
block_for(Duration::from_millis(1));
|
||
|
|
|
||
|
|
self.bus
|
||
|
|
.bp_write8(base + AI_RESETCTRL_OFFSET, AI_RESETCTRL_BIT_RESET)
|
||
|
|
.await;
|
||
|
|
let _ = self.bus.bp_read8(base + AI_RESETCTRL_OFFSET).await;
|
||
|
|
}
|
||
|
|
|
||
|
|
async fn core_reset(&mut self, core: Core) {
|
||
|
|
self.core_disable(core).await;
|
||
|
|
|
||
|
|
let base = core.base_addr();
|
||
|
|
self.bus
|
||
|
|
.bp_write8(base + AI_IOCTRL_OFFSET, AI_IOCTRL_BIT_FGC | AI_IOCTRL_BIT_CLOCK_EN)
|
||
|
|
.await;
|
||
|
|
let _ = self.bus.bp_read8(base + AI_IOCTRL_OFFSET).await;
|
||
|
|
|
||
|
|
self.bus.bp_write8(base + AI_RESETCTRL_OFFSET, 0).await;
|
||
|
|
|
||
|
|
Timer::after(Duration::from_millis(1)).await;
|
||
|
|
|
||
|
|
self.bus
|
||
|
|
.bp_write8(base + AI_IOCTRL_OFFSET, AI_IOCTRL_BIT_CLOCK_EN)
|
||
|
|
.await;
|
||
|
|
let _ = self.bus.bp_read8(base + AI_IOCTRL_OFFSET).await;
|
||
|
|
|
||
|
|
Timer::after(Duration::from_millis(1)).await;
|
||
|
|
}
|
||
|
|
|
||
|
|
async fn core_is_up(&mut self, core: Core) -> bool {
|
||
|
|
let base = core.base_addr();
|
||
|
|
|
||
|
|
let io = self.bus.bp_read8(base + AI_IOCTRL_OFFSET).await;
|
||
|
|
if io & (AI_IOCTRL_BIT_FGC | AI_IOCTRL_BIT_CLOCK_EN) != AI_IOCTRL_BIT_CLOCK_EN {
|
||
|
|
debug!("core_is_up: returning false due to bad ioctrl {:02x}", io);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
let r = self.bus.bp_read8(base + AI_RESETCTRL_OFFSET).await;
|
||
|
|
if r & (AI_RESETCTRL_BIT_RESET) != 0 {
|
||
|
|
debug!("core_is_up: returning false due to bad resetctrl {:02x}", r);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
true
|
||
|
|
}
|
||
|
|
}
|