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main: setup smoltcp

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still panics, leading to a DataAbort
This commit is contained in:
Astro 2019-07-05 00:44:53 +02:00
parent 3a5ed0aac6
commit d11e581862
3 changed files with 77 additions and 39 deletions
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24
src/eth/mod.rs
View File

@ -15,13 +15,13 @@ const MAX_MDC: u32 = 2_500_000;
/// Clock for GbE /// Clock for GbE
const TX_1000: u32 = 125_000_000; const TX_1000: u32 = 125_000_000;
pub struct Eth<RX, TX> { pub struct Eth<'r, RX, TX> {
regs: &'static mut regs::RegisterBlock, regs: &'r mut regs::RegisterBlock,
rx: RX, rx: RX,
tx: TX, tx: TX,
} }
impl Eth<(), ()> { impl<'r> Eth<'r, (), ()> {
pub fn default(macaddr: [u8; 6]) -> Self { pub fn default(macaddr: [u8; 6]) -> Self {
slcr::RegisterBlock::unlocked(|slcr| { slcr::RegisterBlock::unlocked(|slcr| {
// Manual example: 0x0000_1280 // Manual example: 0x0000_1280
@ -167,7 +167,7 @@ impl Eth<(), ()> {
Self::from_regs(regs, macaddr) Self::from_regs(regs, macaddr)
} }
fn from_regs(regs: &'static mut regs::RegisterBlock, macaddr: [u8; 6]) -> Self { fn from_regs(regs: &'r mut regs::RegisterBlock, macaddr: [u8; 6]) -> Self {
let mut eth = Eth { let mut eth = Eth {
regs, regs,
rx: (), rx: (),
@ -178,7 +178,7 @@ impl Eth<(), ()> {
} }
} }
impl<RX, TX> Eth<RX, TX> { impl<'r, RX, TX> Eth<'r, RX, TX> {
pub fn setup_gem0_clock(tx_clock: u32) { pub fn setup_gem0_clock(tx_clock: u32) {
let io_pll = CpuClocks::get().io; let io_pll = CpuClocks::get().io;
let d0 = (io_pll / tx_clock).min(63); let d0 = (io_pll / tx_clock).min(63);
@ -349,7 +349,7 @@ impl<RX, TX> Eth<RX, TX> {
); );
} }
pub fn start_rx<'rx>(self, rx_list: &'rx mut [rx::DescEntry], rx_buffers: &'rx mut [[u8; MTU]]) -> Eth<rx::DescList<'rx>, TX> { pub fn start_rx<'rx>(self, rx_list: &'rx mut [rx::DescEntry], rx_buffers: &'rx mut [[u8; MTU]]) -> Eth<'r, rx::DescList<'rx>, TX> {
let new_self = Eth { let new_self = Eth {
regs: self.regs, regs: self.regs,
rx: rx::DescList::new(rx_list, rx_buffers), rx: rx::DescList::new(rx_list, rx_buffers),
@ -367,7 +367,7 @@ impl<RX, TX> Eth<RX, TX> {
new_self new_self
} }
pub fn start_tx<'tx>(self, tx_list: &'tx mut [tx::DescEntry], tx_buffers: &'tx mut [[u8; MTU]]) -> Eth<RX, tx::DescList<'tx>> { pub fn start_tx<'tx>(self, tx_list: &'tx mut [tx::DescEntry], tx_buffers: &'tx mut [[u8; MTU]]) -> Eth<'r, RX, tx::DescList<'tx>> {
let new_self = Eth { let new_self = Eth {
regs: self.regs, regs: self.regs,
rx: self.rx, rx: self.rx,
@ -412,7 +412,7 @@ impl<RX, TX> Eth<RX, TX> {
} }
} }
impl<'rx, TX> Eth<rx::DescList<'rx>, TX> { impl<'r, 'rx, TX> Eth<'r, rx::DescList<'rx>, TX> {
pub fn recv_next<'s: 'p, 'p>(&'s mut self) -> Result<Option<rx::PktRef<'p>>, rx::Error> { pub fn recv_next<'s: 'p, 'p>(&'s mut self) -> Result<Option<rx::PktRef<'p>>, rx::Error> {
let status = self.regs.rx_status.read(); let status = self.regs.rx_status.read();
if status.hresp_not_ok() { if status.hresp_not_ok() {
@ -459,13 +459,13 @@ impl<'rx, TX> Eth<rx::DescList<'rx>, TX> {
} }
} }
impl<'tx, RX> Eth<RX, tx::DescList<'tx>> { impl<'r, 'tx, RX> Eth<'r, RX, tx::DescList<'tx>> {
pub fn send<'s: 'p, 'p>(&'s mut self, length: usize) -> Option<tx::PktRef<'p>> { pub fn send<'s: 'p, 'p>(&'s mut self, length: usize) -> Option<tx::PktRef<'p>> {
self.tx.send(&mut self.regs, length) self.tx.send(self.regs, length)
} }
} }
impl<RX, TX> phy::PhyAccess for Eth<RX, TX> { impl<'r, RX, TX> phy::PhyAccess for Eth<'r, RX, TX> {
fn read_phy(&mut self, addr: u8, reg: u8) -> u16 { fn read_phy(&mut self, addr: u8, reg: u8) -> u16 {
self.wait_phy_idle(); self.wait_phy_idle();
self.regs.phy_maint.write( self.regs.phy_maint.write(
@ -495,7 +495,7 @@ impl<RX, TX> phy::PhyAccess for Eth<RX, TX> {
} }
} }
impl<'a, 'rx: 'a, 'tx: 'a> smoltcp::phy::Device<'a> for Eth<rx::DescList<'rx>, tx::DescList<'tx>> { impl<'r, 'rx, 'tx: 'a, 'a> smoltcp::phy::Device<'a> for &mut Eth<'r, rx::DescList<'rx>, tx::DescList<'tx>> {
type RxToken = rx::PktRef<'a>; type RxToken = rx::PktRef<'a>;
type TxToken = tx::Token<'a, 'tx>; type TxToken = tx::Token<'a, 'tx>;

4
src/eth/tx.rs
View File

@ -68,7 +68,7 @@ impl<'a> DescList<'a> {
&self.list[0] as *const _ as u32 &self.list[0] as *const _ as u32
} }
pub fn send<'s: 'p, 'p>(&'s mut self, regs: &'p mut regs::RegisterBlock, length: usize) -> Option<PktRef<'p>> { pub fn send<'s: 'p, 'p>(&'s mut self, regs: &'s mut regs::RegisterBlock, length: usize) -> Option<PktRef<'p>> {
let list_len = self.list.len(); let list_len = self.list.len();
let entry = &mut self.list[self.next]; let entry = &mut self.list[self.next];
if entry.word1.read().used() { if entry.word1.read().used() {
@ -122,7 +122,7 @@ impl<'a> DerefMut for PktRef<'a> {
} }
/// TxToken for smoltcp support /// TxToken for smoltcp support
pub struct Token<'a, 'tx> { pub struct Token<'a, 'tx: 'a> {
pub regs: &'a mut regs::RegisterBlock, pub regs: &'a mut regs::RegisterBlock,
pub desc_list: &'a mut DescList<'tx>, pub desc_list: &'a mut DescList<'tx>,
} }

88
src/main.rs
View File

@ -8,10 +8,13 @@
// TODO: disallow unused/dead_code when code moves into a lib crate // TODO: disallow unused/dead_code when code moves into a lib crate
#![allow(dead_code)] #![allow(dead_code)]
use core::mem::uninitialized; use core::mem::{uninitialized, transmute};
use r0::zero_bss; use r0::zero_bss;
use compiler_builtins as _; use compiler_builtins as _;
use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr};
use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder, EthernetInterface};
use smoltcp::time::Instant;
use smoltcp::socket::SocketSet;
mod regs; mod regs;
mod cortex_a9; mod cortex_a9;
@ -73,6 +76,8 @@ fn l1_cache_init() {
dccisw(); dccisw();
} }
const HWADDR: [u8; 6] = [0, 0x23, 0xde, 0xea, 0xbe, 0xef];
fn main() { fn main() {
println!("Main."); println!("Main.");
let clocks = clocks::CpuClocks::get(); let clocks = clocks::CpuClocks::get();
@ -83,7 +88,7 @@ fn main() {
clocks.cpu_2x() / 1_000_000, clocks.cpu_2x() / 1_000_000,
clocks.cpu_1x() / 1_000_000); clocks.cpu_1x() / 1_000_000);
let mut eth = eth::Eth::default([0x0, 0x17, 0xde, 0xea, 0xbe, 0xef]); let mut eth = eth::Eth::default(HWADDR.clone());
println!("Eth on"); println!("Eth on");
eth.reset_phy(); eth.reset_phy();
@ -92,34 +97,67 @@ fn main() {
let eth = eth.start_rx(&mut rx_descs, &mut rx_buffers); let eth = eth.start_rx(&mut rx_descs, &mut rx_buffers);
let mut tx_descs: [eth::tx::DescEntry; 8] = unsafe { uninitialized() }; let mut tx_descs: [eth::tx::DescEntry; 8] = unsafe { uninitialized() };
let mut tx_buffers = [[0u8; 1536]; 8]; let mut tx_buffers = [[0u8; 1536]; 8];
let mut eth = eth.start_tx(&mut tx_descs, &mut tx_buffers); //let mut eth = eth.start_tx(&mut tx_descs, &mut tx_buffers);
let mut eth = eth.start_tx(
// HACK
unsafe { transmute(tx_descs.as_mut()) },
unsafe { transmute(tx_buffers.as_mut()) },
);
let ethernet_addr = EthernetAddress(HWADDR);
// IP stack
let local_addr = IpAddress::v4(10, 0, 0, 1);
let mut ip_addrs = [IpCidr::new(local_addr, 24)];
let mut neighbor_storage = [None; 16];
let neighbor_cache = NeighborCache::new(&mut neighbor_storage[..]);
let mut iface = EthernetInterfaceBuilder::new(&mut eth)
.ethernet_addr(ethernet_addr)
.ip_addrs(&mut ip_addrs[..])
.neighbor_cache(neighbor_cache)
.finalize();
let mut sockets_storage = [
None, None, None, None,
None, None, None, None
];
let mut sockets = SocketSet::new(&mut sockets_storage[..]);
let mut time = 0u32;
loop { loop {
match eth.recv_next() { time += 1;
Ok(Some(pkt)) => { let timestamp = Instant::from_millis(time.into());
print!("eth: rx {} bytes", pkt.len());
for b in pkt.iter() { match iface.poll(&mut sockets, timestamp) {
print!(" {:02X}", b); Ok(_) => {},
}
println!("");
}
Ok(None) => {}
Err(e) => { Err(e) => {
println!("eth rx error: {:?}", e); println!("poll error: {}", e);
} }
} }
match eth.send(512) { // match eth.recv_next() {
Some(mut pkt) => { // Ok(Some(pkt)) => {
let mut x = 0; // print!("eth: rx {} bytes", pkt.len());
for b in pkt.iter_mut() { // for b in pkt.iter() {
*b = x; // print!(" {:02X}", b);
x += 1; // }
} // println!("");
println!("eth tx {} bytes", pkt.len()); // }
} // Ok(None) => {}
None => println!("eth tx shortage"), // Err(e) => {
} // println!("eth rx error: {:?}", e);
// }
// }
// match eth.send(512) {
// Some(mut pkt) => {
// let mut x = 0;
// for b in pkt.iter_mut() {
// *b = x;
// x += 1;
// }
// println!("eth tx {} bytes", pkt.len());
// }
// None => println!("eth tx shortage"),
// }
} }
} }